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1// SPDX-License-Identifier: GPL-2.0
2/*
3 * This file contains work-arounds for many known PCI hardware bugs.
4 * Devices present only on certain architectures (host bridges et cetera)
5 * should be handled in arch-specific code.
6 *
7 * Note: any quirks for hotpluggable devices must _NOT_ be declared __init.
8 *
9 * Copyright (c) 1999 Martin Mares <mj@ucw.cz>
10 *
11 * Init/reset quirks for USB host controllers should be in the USB quirks
12 * file, where their drivers can use them.
13 */
14
15#include <linux/types.h>
16#include <linux/kernel.h>
17#include <linux/export.h>
18#include <linux/pci.h>
19#include <linux/init.h>
20#include <linux/delay.h>
21#include <linux/acpi.h>
22#include <linux/dmi.h>
23#include <linux/ioport.h>
24#include <linux/sched.h>
25#include <linux/ktime.h>
26#include <linux/mm.h>
27#include <linux/nvme.h>
28#include <linux/platform_data/x86/apple.h>
29#include <linux/pm_runtime.h>
30#include <linux/switchtec.h>
31#include <asm/dma.h> /* isa_dma_bridge_buggy */
32#include "pci.h"
33
34static ktime_t fixup_debug_start(struct pci_dev *dev,
35 void (*fn)(struct pci_dev *dev))
36{
37 if (initcall_debug)
38 pci_info(dev, "calling %pS @ %i\n", fn, task_pid_nr(current));
39
40 return ktime_get();
41}
42
43static void fixup_debug_report(struct pci_dev *dev, ktime_t calltime,
44 void (*fn)(struct pci_dev *dev))
45{
46 ktime_t delta, rettime;
47 unsigned long long duration;
48
49 rettime = ktime_get();
50 delta = ktime_sub(rettime, calltime);
51 duration = (unsigned long long) ktime_to_ns(delta) >> 10;
52 if (initcall_debug || duration > 10000)
53 pci_info(dev, "%pS took %lld usecs\n", fn, duration);
54}
55
56static void pci_do_fixups(struct pci_dev *dev, struct pci_fixup *f,
57 struct pci_fixup *end)
58{
59 ktime_t calltime;
60
61 for (; f < end; f++)
62 if ((f->class == (u32) (dev->class >> f->class_shift) ||
63 f->class == (u32) PCI_ANY_ID) &&
64 (f->vendor == dev->vendor ||
65 f->vendor == (u16) PCI_ANY_ID) &&
66 (f->device == dev->device ||
67 f->device == (u16) PCI_ANY_ID)) {
68 void (*hook)(struct pci_dev *dev);
69#ifdef CONFIG_HAVE_ARCH_PREL32_RELOCATIONS
70 hook = offset_to_ptr(&f->hook_offset);
71#else
72 hook = f->hook;
73#endif
74 calltime = fixup_debug_start(dev, hook);
75 hook(dev);
76 fixup_debug_report(dev, calltime, hook);
77 }
78}
79
80extern struct pci_fixup __start_pci_fixups_early[];
81extern struct pci_fixup __end_pci_fixups_early[];
82extern struct pci_fixup __start_pci_fixups_header[];
83extern struct pci_fixup __end_pci_fixups_header[];
84extern struct pci_fixup __start_pci_fixups_final[];
85extern struct pci_fixup __end_pci_fixups_final[];
86extern struct pci_fixup __start_pci_fixups_enable[];
87extern struct pci_fixup __end_pci_fixups_enable[];
88extern struct pci_fixup __start_pci_fixups_resume[];
89extern struct pci_fixup __end_pci_fixups_resume[];
90extern struct pci_fixup __start_pci_fixups_resume_early[];
91extern struct pci_fixup __end_pci_fixups_resume_early[];
92extern struct pci_fixup __start_pci_fixups_suspend[];
93extern struct pci_fixup __end_pci_fixups_suspend[];
94extern struct pci_fixup __start_pci_fixups_suspend_late[];
95extern struct pci_fixup __end_pci_fixups_suspend_late[];
96
97static bool pci_apply_fixup_final_quirks;
98
99void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev)
100{
101 struct pci_fixup *start, *end;
102
103 switch (pass) {
104 case pci_fixup_early:
105 start = __start_pci_fixups_early;
106 end = __end_pci_fixups_early;
107 break;
108
109 case pci_fixup_header:
110 start = __start_pci_fixups_header;
111 end = __end_pci_fixups_header;
112 break;
113
114 case pci_fixup_final:
115 if (!pci_apply_fixup_final_quirks)
116 return;
117 start = __start_pci_fixups_final;
118 end = __end_pci_fixups_final;
119 break;
120
121 case pci_fixup_enable:
122 start = __start_pci_fixups_enable;
123 end = __end_pci_fixups_enable;
124 break;
125
126 case pci_fixup_resume:
127 start = __start_pci_fixups_resume;
128 end = __end_pci_fixups_resume;
129 break;
130
131 case pci_fixup_resume_early:
132 start = __start_pci_fixups_resume_early;
133 end = __end_pci_fixups_resume_early;
134 break;
135
136 case pci_fixup_suspend:
137 start = __start_pci_fixups_suspend;
138 end = __end_pci_fixups_suspend;
139 break;
140
141 case pci_fixup_suspend_late:
142 start = __start_pci_fixups_suspend_late;
143 end = __end_pci_fixups_suspend_late;
144 break;
145
146 default:
147 /* stupid compiler warning, you would think with an enum... */
148 return;
149 }
150 pci_do_fixups(dev, start, end);
151}
152EXPORT_SYMBOL(pci_fixup_device);
153
154static int __init pci_apply_final_quirks(void)
155{
156 struct pci_dev *dev = NULL;
157 u8 cls = 0;
158 u8 tmp;
159
160 if (pci_cache_line_size)
161 pr_info("PCI: CLS %u bytes\n", pci_cache_line_size << 2);
162
163 pci_apply_fixup_final_quirks = true;
164 for_each_pci_dev(dev) {
165 pci_fixup_device(pci_fixup_final, dev);
166 /*
167 * If arch hasn't set it explicitly yet, use the CLS
168 * value shared by all PCI devices. If there's a
169 * mismatch, fall back to the default value.
170 */
171 if (!pci_cache_line_size) {
172 pci_read_config_byte(dev, PCI_CACHE_LINE_SIZE, &tmp);
173 if (!cls)
174 cls = tmp;
175 if (!tmp || cls == tmp)
176 continue;
177
178 pci_info(dev, "CLS mismatch (%u != %u), using %u bytes\n",
179 cls << 2, tmp << 2,
180 pci_dfl_cache_line_size << 2);
181 pci_cache_line_size = pci_dfl_cache_line_size;
182 }
183 }
184
185 if (!pci_cache_line_size) {
186 pr_info("PCI: CLS %u bytes, default %u\n", cls << 2,
187 pci_dfl_cache_line_size << 2);
188 pci_cache_line_size = cls ? cls : pci_dfl_cache_line_size;
189 }
190
191 return 0;
192}
193fs_initcall_sync(pci_apply_final_quirks);
194
195/*
196 * Decoding should be disabled for a PCI device during BAR sizing to avoid
197 * conflict. But doing so may cause problems on host bridge and perhaps other
198 * key system devices. For devices that need to have mmio decoding always-on,
199 * we need to set the dev->mmio_always_on bit.
200 */
201static void quirk_mmio_always_on(struct pci_dev *dev)
202{
203 dev->mmio_always_on = 1;
204}
205DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_ANY_ID, PCI_ANY_ID,
206 PCI_CLASS_BRIDGE_HOST, 8, quirk_mmio_always_on);
207
208/*
209 * The Mellanox Tavor device gives false positive parity errors. Mark this
210 * device with a broken_parity_status to allow PCI scanning code to "skip"
211 * this now blacklisted device.
212 */
213static void quirk_mellanox_tavor(struct pci_dev *dev)
214{
215 dev->broken_parity_status = 1; /* This device gives false positives */
216}
217DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_TAVOR, quirk_mellanox_tavor);
218DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_TAVOR_BRIDGE, quirk_mellanox_tavor);
219
220/*
221 * Deal with broken BIOSes that neglect to enable passive release,
222 * which can cause problems in combination with the 82441FX/PPro MTRRs
223 */
224static void quirk_passive_release(struct pci_dev *dev)
225{
226 struct pci_dev *d = NULL;
227 unsigned char dlc;
228
229 /*
230 * We have to make sure a particular bit is set in the PIIX3
231 * ISA bridge, so we have to go out and find it.
232 */
233 while ((d = pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, d))) {
234 pci_read_config_byte(d, 0x82, &dlc);
235 if (!(dlc & 1<<1)) {
236 pci_info(d, "PIIX3: Enabling Passive Release\n");
237 dlc |= 1<<1;
238 pci_write_config_byte(d, 0x82, dlc);
239 }
240 }
241}
242DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_passive_release);
243DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_passive_release);
244
245/*
246 * The VIA VP2/VP3/MVP3 seem to have some 'features'. There may be a
247 * workaround but VIA don't answer queries. If you happen to have good
248 * contacts at VIA ask them for me please -- Alan
249 *
250 * This appears to be BIOS not version dependent. So presumably there is a
251 * chipset level fix.
252 */
253static void quirk_isa_dma_hangs(struct pci_dev *dev)
254{
255 if (!isa_dma_bridge_buggy) {
256 isa_dma_bridge_buggy = 1;
257 pci_info(dev, "Activating ISA DMA hang workarounds\n");
258 }
259}
260/*
261 * It's not totally clear which chipsets are the problematic ones. We know
262 * 82C586 and 82C596 variants are affected.
263 */
264DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_0, quirk_isa_dma_hangs);
265DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C596, quirk_isa_dma_hangs);
266DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, quirk_isa_dma_hangs);
267DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, quirk_isa_dma_hangs);
268DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_1, quirk_isa_dma_hangs);
269DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_2, quirk_isa_dma_hangs);
270DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_3, quirk_isa_dma_hangs);
271
272/*
273 * Intel NM10 "TigerPoint" LPC PM1a_STS.BM_STS must be clear
274 * for some HT machines to use C4 w/o hanging.
275 */
276static void quirk_tigerpoint_bm_sts(struct pci_dev *dev)
277{
278 u32 pmbase;
279 u16 pm1a;
280
281 pci_read_config_dword(dev, 0x40, &pmbase);
282 pmbase = pmbase & 0xff80;
283 pm1a = inw(pmbase);
284
285 if (pm1a & 0x10) {
286 pci_info(dev, FW_BUG "TigerPoint LPC.BM_STS cleared\n");
287 outw(0x10, pmbase);
288 }
289}
290DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_TGP_LPC, quirk_tigerpoint_bm_sts);
291
292/* Chipsets where PCI->PCI transfers vanish or hang */
293static void quirk_nopcipci(struct pci_dev *dev)
294{
295 if ((pci_pci_problems & PCIPCI_FAIL) == 0) {
296 pci_info(dev, "Disabling direct PCI/PCI transfers\n");
297 pci_pci_problems |= PCIPCI_FAIL;
298 }
299}
300DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5597, quirk_nopcipci);
301DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_496, quirk_nopcipci);
302
303static void quirk_nopciamd(struct pci_dev *dev)
304{
305 u8 rev;
306 pci_read_config_byte(dev, 0x08, &rev);
307 if (rev == 0x13) {
308 /* Erratum 24 */
309 pci_info(dev, "Chipset erratum: Disabling direct PCI/AGP transfers\n");
310 pci_pci_problems |= PCIAGP_FAIL;
311 }
312}
313DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8151_0, quirk_nopciamd);
314
315/* Triton requires workarounds to be used by the drivers */
316static void quirk_triton(struct pci_dev *dev)
317{
318 if ((pci_pci_problems&PCIPCI_TRITON) == 0) {
319 pci_info(dev, "Limiting direct PCI/PCI transfers\n");
320 pci_pci_problems |= PCIPCI_TRITON;
321 }
322}
323DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437, quirk_triton);
324DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437VX, quirk_triton);
325DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82439, quirk_triton);
326DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82439TX, quirk_triton);
327
328/*
329 * VIA Apollo KT133 needs PCI latency patch
330 * Made according to a Windows driver-based patch by George E. Breese;
331 * see PCI Latency Adjust on http://www.viahardware.com/download/viatweak.shtm
332 * Also see http://www.au-ja.org/review-kt133a-1-en.phtml for the info on
333 * which Mr Breese based his work.
334 *
335 * Updated based on further information from the site and also on
336 * information provided by VIA
337 */
338static void quirk_vialatency(struct pci_dev *dev)
339{
340 struct pci_dev *p;
341 u8 busarb;
342
343 /*
344 * Ok, we have a potential problem chipset here. Now see if we have
345 * a buggy southbridge.
346 */
347 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, NULL);
348 if (p != NULL) {
349
350 /*
351 * 0x40 - 0x4f == 686B, 0x10 - 0x2f == 686A;
352 * thanks Dan Hollis.
353 * Check for buggy part revisions
354 */
355 if (p->revision < 0x40 || p->revision > 0x42)
356 goto exit;
357 } else {
358 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, NULL);
359 if (p == NULL) /* No problem parts */
360 goto exit;
361
362 /* Check for buggy part revisions */
363 if (p->revision < 0x10 || p->revision > 0x12)
364 goto exit;
365 }
366
367 /*
368 * Ok we have the problem. Now set the PCI master grant to occur
369 * every master grant. The apparent bug is that under high PCI load
370 * (quite common in Linux of course) you can get data loss when the
371 * CPU is held off the bus for 3 bus master requests. This happens
372 * to include the IDE controllers....
373 *
374 * VIA only apply this fix when an SB Live! is present but under
375 * both Linux and Windows this isn't enough, and we have seen
376 * corruption without SB Live! but with things like 3 UDMA IDE
377 * controllers. So we ignore that bit of the VIA recommendation..
378 */
379 pci_read_config_byte(dev, 0x76, &busarb);
380
381 /*
382 * Set bit 4 and bit 5 of byte 76 to 0x01
383 * "Master priority rotation on every PCI master grant"
384 */
385 busarb &= ~(1<<5);
386 busarb |= (1<<4);
387 pci_write_config_byte(dev, 0x76, busarb);
388 pci_info(dev, "Applying VIA southbridge workaround\n");
389exit:
390 pci_dev_put(p);
391}
392DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, quirk_vialatency);
393DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8371_1, quirk_vialatency);
394DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, quirk_vialatency);
395/* Must restore this on a resume from RAM */
396DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, quirk_vialatency);
397DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8371_1, quirk_vialatency);
398DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, quirk_vialatency);
399
400/* VIA Apollo VP3 needs ETBF on BT848/878 */
401static void quirk_viaetbf(struct pci_dev *dev)
402{
403 if ((pci_pci_problems&PCIPCI_VIAETBF) == 0) {
404 pci_info(dev, "Limiting direct PCI/PCI transfers\n");
405 pci_pci_problems |= PCIPCI_VIAETBF;
406 }
407}
408DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_viaetbf);
409
410static void quirk_vsfx(struct pci_dev *dev)
411{
412 if ((pci_pci_problems&PCIPCI_VSFX) == 0) {
413 pci_info(dev, "Limiting direct PCI/PCI transfers\n");
414 pci_pci_problems |= PCIPCI_VSFX;
415 }
416}
417DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C576, quirk_vsfx);
418
419/*
420 * ALi Magik requires workarounds to be used by the drivers that DMA to AGP
421 * space. Latency must be set to 0xA and Triton workaround applied too.
422 * [Info kindly provided by ALi]
423 */
424static void quirk_alimagik(struct pci_dev *dev)
425{
426 if ((pci_pci_problems&PCIPCI_ALIMAGIK) == 0) {
427 pci_info(dev, "Limiting direct PCI/PCI transfers\n");
428 pci_pci_problems |= PCIPCI_ALIMAGIK|PCIPCI_TRITON;
429 }
430}
431DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1647, quirk_alimagik);
432DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1651, quirk_alimagik);
433
434/* Natoma has some interesting boundary conditions with Zoran stuff at least */
435static void quirk_natoma(struct pci_dev *dev)
436{
437 if ((pci_pci_problems&PCIPCI_NATOMA) == 0) {
438 pci_info(dev, "Limiting direct PCI/PCI transfers\n");
439 pci_pci_problems |= PCIPCI_NATOMA;
440 }
441}
442DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_natoma);
443DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443LX_0, quirk_natoma);
444DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443LX_1, quirk_natoma);
445DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_0, quirk_natoma);
446DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_1, quirk_natoma);
447DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_2, quirk_natoma);
448
449/*
450 * This chip can cause PCI parity errors if config register 0xA0 is read
451 * while DMAs are occurring.
452 */
453static void quirk_citrine(struct pci_dev *dev)
454{
455 dev->cfg_size = 0xA0;
456}
457DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, quirk_citrine);
458
459/*
460 * This chip can cause bus lockups if config addresses above 0x600
461 * are read or written.
462 */
463static void quirk_nfp6000(struct pci_dev *dev)
464{
465 dev->cfg_size = 0x600;
466}
467DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP4000, quirk_nfp6000);
468DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP6000, quirk_nfp6000);
469DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP5000, quirk_nfp6000);
470DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP6000_VF, quirk_nfp6000);
471
472/* On IBM Crocodile ipr SAS adapters, expand BAR to system page size */
473static void quirk_extend_bar_to_page(struct pci_dev *dev)
474{
475 int i;
476
477 for (i = 0; i <= PCI_STD_RESOURCE_END; i++) {
478 struct resource *r = &dev->resource[i];
479
480 if (r->flags & IORESOURCE_MEM && resource_size(r) < PAGE_SIZE) {
481 r->end = PAGE_SIZE - 1;
482 r->start = 0;
483 r->flags |= IORESOURCE_UNSET;
484 pci_info(dev, "expanded BAR %d to page size: %pR\n",
485 i, r);
486 }
487 }
488}
489DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_IBM, 0x034a, quirk_extend_bar_to_page);
490
491/*
492 * S3 868 and 968 chips report region size equal to 32M, but they decode 64M.
493 * If it's needed, re-allocate the region.
494 */
495static void quirk_s3_64M(struct pci_dev *dev)
496{
497 struct resource *r = &dev->resource[0];
498
499 if ((r->start & 0x3ffffff) || r->end != r->start + 0x3ffffff) {
500 r->flags |= IORESOURCE_UNSET;
501 r->start = 0;
502 r->end = 0x3ffffff;
503 }
504}
505DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_868, quirk_s3_64M);
506DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_968, quirk_s3_64M);
507
508static void quirk_io(struct pci_dev *dev, int pos, unsigned size,
509 const char *name)
510{
511 u32 region;
512 struct pci_bus_region bus_region;
513 struct resource *res = dev->resource + pos;
514
515 pci_read_config_dword(dev, PCI_BASE_ADDRESS_0 + (pos << 2), ®ion);
516
517 if (!region)
518 return;
519
520 res->name = pci_name(dev);
521 res->flags = region & ~PCI_BASE_ADDRESS_IO_MASK;
522 res->flags |=
523 (IORESOURCE_IO | IORESOURCE_PCI_FIXED | IORESOURCE_SIZEALIGN);
524 region &= ~(size - 1);
525
526 /* Convert from PCI bus to resource space */
527 bus_region.start = region;
528 bus_region.end = region + size - 1;
529 pcibios_bus_to_resource(dev->bus, res, &bus_region);
530
531 pci_info(dev, FW_BUG "%s quirk: reg 0x%x: %pR\n",
532 name, PCI_BASE_ADDRESS_0 + (pos << 2), res);
533}
534
535/*
536 * Some CS5536 BIOSes (for example, the Soekris NET5501 board w/ comBIOS
537 * ver. 1.33 20070103) don't set the correct ISA PCI region header info.
538 * BAR0 should be 8 bytes; instead, it may be set to something like 8k
539 * (which conflicts w/ BAR1's memory range).
540 *
541 * CS553x's ISA PCI BARs may also be read-only (ref:
542 * https://bugzilla.kernel.org/show_bug.cgi?id=85991 - Comment #4 forward).
543 */
544static void quirk_cs5536_vsa(struct pci_dev *dev)
545{
546 static char *name = "CS5536 ISA bridge";
547
548 if (pci_resource_len(dev, 0) != 8) {
549 quirk_io(dev, 0, 8, name); /* SMB */
550 quirk_io(dev, 1, 256, name); /* GPIO */
551 quirk_io(dev, 2, 64, name); /* MFGPT */
552 pci_info(dev, "%s bug detected (incorrect header); workaround applied\n",
553 name);
554 }
555}
556DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_ISA, quirk_cs5536_vsa);
557
558static void quirk_io_region(struct pci_dev *dev, int port,
559 unsigned size, int nr, const char *name)
560{
561 u16 region;
562 struct pci_bus_region bus_region;
563 struct resource *res = dev->resource + nr;
564
565 pci_read_config_word(dev, port, ®ion);
566 region &= ~(size - 1);
567
568 if (!region)
569 return;
570
571 res->name = pci_name(dev);
572 res->flags = IORESOURCE_IO;
573
574 /* Convert from PCI bus to resource space */
575 bus_region.start = region;
576 bus_region.end = region + size - 1;
577 pcibios_bus_to_resource(dev->bus, res, &bus_region);
578
579 if (!pci_claim_resource(dev, nr))
580 pci_info(dev, "quirk: %pR claimed by %s\n", res, name);
581}
582
583/*
584 * ATI Northbridge setups MCE the processor if you even read somewhere
585 * between 0x3b0->0x3bb or read 0x3d3
586 */
587static void quirk_ati_exploding_mce(struct pci_dev *dev)
588{
589 pci_info(dev, "ATI Northbridge, reserving I/O ports 0x3b0 to 0x3bb\n");
590 /* Mae rhaid i ni beidio ag edrych ar y lleoliadiau I/O hyn */
591 request_region(0x3b0, 0x0C, "RadeonIGP");
592 request_region(0x3d3, 0x01, "RadeonIGP");
593}
594DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS100, quirk_ati_exploding_mce);
595
596/*
597 * In the AMD NL platform, this device ([1022:7912]) has a class code of
598 * PCI_CLASS_SERIAL_USB_XHCI (0x0c0330), which means the xhci driver will
599 * claim it.
600 *
601 * But the dwc3 driver is a more specific driver for this device, and we'd
602 * prefer to use it instead of xhci. To prevent xhci from claiming the
603 * device, change the class code to 0x0c03fe, which the PCI r3.0 spec
604 * defines as "USB device (not host controller)". The dwc3 driver can then
605 * claim it based on its Vendor and Device ID.
606 */
607static void quirk_amd_nl_class(struct pci_dev *pdev)
608{
609 u32 class = pdev->class;
610
611 /* Use "USB Device (not host controller)" class */
612 pdev->class = PCI_CLASS_SERIAL_USB_DEVICE;
613 pci_info(pdev, "PCI class overridden (%#08x -> %#08x) so dwc3 driver can claim this instead of xhci\n",
614 class, pdev->class);
615}
616DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_NL_USB,
617 quirk_amd_nl_class);
618
619/*
620 * Synopsys USB 3.x host HAPS platform has a class code of
621 * PCI_CLASS_SERIAL_USB_XHCI, and xhci driver can claim it. However, these
622 * devices should use dwc3-haps driver. Change these devices' class code to
623 * PCI_CLASS_SERIAL_USB_DEVICE to prevent the xhci-pci driver from claiming
624 * them.
625 */
626static void quirk_synopsys_haps(struct pci_dev *pdev)
627{
628 u32 class = pdev->class;
629
630 switch (pdev->device) {
631 case PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3:
632 case PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI:
633 case PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31:
634 pdev->class = PCI_CLASS_SERIAL_USB_DEVICE;
635 pci_info(pdev, "PCI class overridden (%#08x -> %#08x) so dwc3 driver can claim this instead of xhci\n",
636 class, pdev->class);
637 break;
638 }
639}
640DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_SYNOPSYS, PCI_ANY_ID,
641 PCI_CLASS_SERIAL_USB_XHCI, 0,
642 quirk_synopsys_haps);
643
644/*
645 * Let's make the southbridge information explicit instead of having to
646 * worry about people probing the ACPI areas, for example.. (Yes, it
647 * happens, and if you read the wrong ACPI register it will put the machine
648 * to sleep with no way of waking it up again. Bummer).
649 *
650 * ALI M7101: Two IO regions pointed to by words at
651 * 0xE0 (64 bytes of ACPI registers)
652 * 0xE2 (32 bytes of SMB registers)
653 */
654static void quirk_ali7101_acpi(struct pci_dev *dev)
655{
656 quirk_io_region(dev, 0xE0, 64, PCI_BRIDGE_RESOURCES, "ali7101 ACPI");
657 quirk_io_region(dev, 0xE2, 32, PCI_BRIDGE_RESOURCES+1, "ali7101 SMB");
658}
659DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101, quirk_ali7101_acpi);
660
661static void piix4_io_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable)
662{
663 u32 devres;
664 u32 mask, size, base;
665
666 pci_read_config_dword(dev, port, &devres);
667 if ((devres & enable) != enable)
668 return;
669 mask = (devres >> 16) & 15;
670 base = devres & 0xffff;
671 size = 16;
672 for (;;) {
673 unsigned bit = size >> 1;
674 if ((bit & mask) == bit)
675 break;
676 size = bit;
677 }
678 /*
679 * For now we only print it out. Eventually we'll want to
680 * reserve it (at least if it's in the 0x1000+ range), but
681 * let's get enough confirmation reports first.
682 */
683 base &= -size;
684 pci_info(dev, "%s PIO at %04x-%04x\n", name, base, base + size - 1);
685}
686
687static void piix4_mem_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable)
688{
689 u32 devres;
690 u32 mask, size, base;
691
692 pci_read_config_dword(dev, port, &devres);
693 if ((devres & enable) != enable)
694 return;
695 base = devres & 0xffff0000;
696 mask = (devres & 0x3f) << 16;
697 size = 128 << 16;
698 for (;;) {
699 unsigned bit = size >> 1;
700 if ((bit & mask) == bit)
701 break;
702 size = bit;
703 }
704
705 /*
706 * For now we only print it out. Eventually we'll want to
707 * reserve it, but let's get enough confirmation reports first.
708 */
709 base &= -size;
710 pci_info(dev, "%s MMIO at %04x-%04x\n", name, base, base + size - 1);
711}
712
713/*
714 * PIIX4 ACPI: Two IO regions pointed to by longwords at
715 * 0x40 (64 bytes of ACPI registers)
716 * 0x90 (16 bytes of SMB registers)
717 * and a few strange programmable PIIX4 device resources.
718 */
719static void quirk_piix4_acpi(struct pci_dev *dev)
720{
721 u32 res_a;
722
723 quirk_io_region(dev, 0x40, 64, PCI_BRIDGE_RESOURCES, "PIIX4 ACPI");
724 quirk_io_region(dev, 0x90, 16, PCI_BRIDGE_RESOURCES+1, "PIIX4 SMB");
725
726 /* Device resource A has enables for some of the other ones */
727 pci_read_config_dword(dev, 0x5c, &res_a);
728
729 piix4_io_quirk(dev, "PIIX4 devres B", 0x60, 3 << 21);
730 piix4_io_quirk(dev, "PIIX4 devres C", 0x64, 3 << 21);
731
732 /* Device resource D is just bitfields for static resources */
733
734 /* Device 12 enabled? */
735 if (res_a & (1 << 29)) {
736 piix4_io_quirk(dev, "PIIX4 devres E", 0x68, 1 << 20);
737 piix4_mem_quirk(dev, "PIIX4 devres F", 0x6c, 1 << 7);
738 }
739 /* Device 13 enabled? */
740 if (res_a & (1 << 30)) {
741 piix4_io_quirk(dev, "PIIX4 devres G", 0x70, 1 << 20);
742 piix4_mem_quirk(dev, "PIIX4 devres H", 0x74, 1 << 7);
743 }
744 piix4_io_quirk(dev, "PIIX4 devres I", 0x78, 1 << 20);
745 piix4_io_quirk(dev, "PIIX4 devres J", 0x7c, 1 << 20);
746}
747DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3, quirk_piix4_acpi);
748DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443MX_3, quirk_piix4_acpi);
749
750#define ICH_PMBASE 0x40
751#define ICH_ACPI_CNTL 0x44
752#define ICH4_ACPI_EN 0x10
753#define ICH6_ACPI_EN 0x80
754#define ICH4_GPIOBASE 0x58
755#define ICH4_GPIO_CNTL 0x5c
756#define ICH4_GPIO_EN 0x10
757#define ICH6_GPIOBASE 0x48
758#define ICH6_GPIO_CNTL 0x4c
759#define ICH6_GPIO_EN 0x10
760
761/*
762 * ICH4, ICH4-M, ICH5, ICH5-M ACPI: Three IO regions pointed to by longwords at
763 * 0x40 (128 bytes of ACPI, GPIO & TCO registers)
764 * 0x58 (64 bytes of GPIO I/O space)
765 */
766static void quirk_ich4_lpc_acpi(struct pci_dev *dev)
767{
768 u8 enable;
769
770 /*
771 * The check for PCIBIOS_MIN_IO is to ensure we won't create a conflict
772 * with low legacy (and fixed) ports. We don't know the decoding
773 * priority and can't tell whether the legacy device or the one created
774 * here is really at that address. This happens on boards with broken
775 * BIOSes.
776 */
777 pci_read_config_byte(dev, ICH_ACPI_CNTL, &enable);
778 if (enable & ICH4_ACPI_EN)
779 quirk_io_region(dev, ICH_PMBASE, 128, PCI_BRIDGE_RESOURCES,
780 "ICH4 ACPI/GPIO/TCO");
781
782 pci_read_config_byte(dev, ICH4_GPIO_CNTL, &enable);
783 if (enable & ICH4_GPIO_EN)
784 quirk_io_region(dev, ICH4_GPIOBASE, 64, PCI_BRIDGE_RESOURCES+1,
785 "ICH4 GPIO");
786}
787DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, quirk_ich4_lpc_acpi);
788DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AB_0, quirk_ich4_lpc_acpi);
789DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, quirk_ich4_lpc_acpi);
790DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_10, quirk_ich4_lpc_acpi);
791DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, quirk_ich4_lpc_acpi);
792DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, quirk_ich4_lpc_acpi);
793DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, quirk_ich4_lpc_acpi);
794DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, quirk_ich4_lpc_acpi);
795DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, quirk_ich4_lpc_acpi);
796DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_1, quirk_ich4_lpc_acpi);
797
798static void ich6_lpc_acpi_gpio(struct pci_dev *dev)
799{
800 u8 enable;
801
802 pci_read_config_byte(dev, ICH_ACPI_CNTL, &enable);
803 if (enable & ICH6_ACPI_EN)
804 quirk_io_region(dev, ICH_PMBASE, 128, PCI_BRIDGE_RESOURCES,
805 "ICH6 ACPI/GPIO/TCO");
806
807 pci_read_config_byte(dev, ICH6_GPIO_CNTL, &enable);
808 if (enable & ICH6_GPIO_EN)
809 quirk_io_region(dev, ICH6_GPIOBASE, 64, PCI_BRIDGE_RESOURCES+1,
810 "ICH6 GPIO");
811}
812
813static void ich6_lpc_generic_decode(struct pci_dev *dev, unsigned reg,
814 const char *name, int dynsize)
815{
816 u32 val;
817 u32 size, base;
818
819 pci_read_config_dword(dev, reg, &val);
820
821 /* Enabled? */
822 if (!(val & 1))
823 return;
824 base = val & 0xfffc;
825 if (dynsize) {
826 /*
827 * This is not correct. It is 16, 32 or 64 bytes depending on
828 * register D31:F0:ADh bits 5:4.
829 *
830 * But this gets us at least _part_ of it.
831 */
832 size = 16;
833 } else {
834 size = 128;
835 }
836 base &= ~(size-1);
837
838 /*
839 * Just print it out for now. We should reserve it after more
840 * debugging.
841 */
842 pci_info(dev, "%s PIO at %04x-%04x\n", name, base, base+size-1);
843}
844
845static void quirk_ich6_lpc(struct pci_dev *dev)
846{
847 /* Shared ACPI/GPIO decode with all ICH6+ */
848 ich6_lpc_acpi_gpio(dev);
849
850 /* ICH6-specific generic IO decode */
851 ich6_lpc_generic_decode(dev, 0x84, "LPC Generic IO decode 1", 0);
852 ich6_lpc_generic_decode(dev, 0x88, "LPC Generic IO decode 2", 1);
853}
854DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_0, quirk_ich6_lpc);
855DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, quirk_ich6_lpc);
856
857static void ich7_lpc_generic_decode(struct pci_dev *dev, unsigned reg,
858 const char *name)
859{
860 u32 val;
861 u32 mask, base;
862
863 pci_read_config_dword(dev, reg, &val);
864
865 /* Enabled? */
866 if (!(val & 1))
867 return;
868
869 /* IO base in bits 15:2, mask in bits 23:18, both are dword-based */
870 base = val & 0xfffc;
871 mask = (val >> 16) & 0xfc;
872 mask |= 3;
873
874 /*
875 * Just print it out for now. We should reserve it after more
876 * debugging.
877 */
878 pci_info(dev, "%s PIO at %04x (mask %04x)\n", name, base, mask);
879}
880
881/* ICH7-10 has the same common LPC generic IO decode registers */
882static void quirk_ich7_lpc(struct pci_dev *dev)
883{
884 /* We share the common ACPI/GPIO decode with ICH6 */
885 ich6_lpc_acpi_gpio(dev);
886
887 /* And have 4 ICH7+ generic decodes */
888 ich7_lpc_generic_decode(dev, 0x84, "ICH7 LPC Generic IO decode 1");
889 ich7_lpc_generic_decode(dev, 0x88, "ICH7 LPC Generic IO decode 2");
890 ich7_lpc_generic_decode(dev, 0x8c, "ICH7 LPC Generic IO decode 3");
891 ich7_lpc_generic_decode(dev, 0x90, "ICH7 LPC Generic IO decode 4");
892}
893DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_0, quirk_ich7_lpc);
894DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_1, quirk_ich7_lpc);
895DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_31, quirk_ich7_lpc);
896DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_0, quirk_ich7_lpc);
897DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_2, quirk_ich7_lpc);
898DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_3, quirk_ich7_lpc);
899DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_1, quirk_ich7_lpc);
900DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_4, quirk_ich7_lpc);
901DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_2, quirk_ich7_lpc);
902DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_4, quirk_ich7_lpc);
903DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_7, quirk_ich7_lpc);
904DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_8, quirk_ich7_lpc);
905DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH10_1, quirk_ich7_lpc);
906
907/*
908 * VIA ACPI: One IO region pointed to by longword at
909 * 0x48 or 0x20 (256 bytes of ACPI registers)
910 */
911static void quirk_vt82c586_acpi(struct pci_dev *dev)
912{
913 if (dev->revision & 0x10)
914 quirk_io_region(dev, 0x48, 256, PCI_BRIDGE_RESOURCES,
915 "vt82c586 ACPI");
916}
917DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_vt82c586_acpi);
918
919/*
920 * VIA VT82C686 ACPI: Three IO region pointed to by (long)words at
921 * 0x48 (256 bytes of ACPI registers)
922 * 0x70 (128 bytes of hardware monitoring register)
923 * 0x90 (16 bytes of SMB registers)
924 */
925static void quirk_vt82c686_acpi(struct pci_dev *dev)
926{
927 quirk_vt82c586_acpi(dev);
928
929 quirk_io_region(dev, 0x70, 128, PCI_BRIDGE_RESOURCES+1,
930 "vt82c686 HW-mon");
931
932 quirk_io_region(dev, 0x90, 16, PCI_BRIDGE_RESOURCES+2, "vt82c686 SMB");
933}
934DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_vt82c686_acpi);
935
936/*
937 * VIA VT8235 ISA Bridge: Two IO regions pointed to by words at
938 * 0x88 (128 bytes of power management registers)
939 * 0xd0 (16 bytes of SMB registers)
940 */
941static void quirk_vt8235_acpi(struct pci_dev *dev)
942{
943 quirk_io_region(dev, 0x88, 128, PCI_BRIDGE_RESOURCES, "vt8235 PM");
944 quirk_io_region(dev, 0xd0, 16, PCI_BRIDGE_RESOURCES+1, "vt8235 SMB");
945}
946DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_vt8235_acpi);
947
948/*
949 * TI XIO2000a PCIe-PCI Bridge erroneously reports it supports fast
950 * back-to-back: Disable fast back-to-back on the secondary bus segment
951 */
952static void quirk_xio2000a(struct pci_dev *dev)
953{
954 struct pci_dev *pdev;
955 u16 command;
956
957 pci_warn(dev, "TI XIO2000a quirk detected; secondary bus fast back-to-back transfers disabled\n");
958 list_for_each_entry(pdev, &dev->subordinate->devices, bus_list) {
959 pci_read_config_word(pdev, PCI_COMMAND, &command);
960 if (command & PCI_COMMAND_FAST_BACK)
961 pci_write_config_word(pdev, PCI_COMMAND, command & ~PCI_COMMAND_FAST_BACK);
962 }
963}
964DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XIO2000A,
965 quirk_xio2000a);
966
967#ifdef CONFIG_X86_IO_APIC
968
969#include <asm/io_apic.h>
970
971/*
972 * VIA 686A/B: If an IO-APIC is active, we need to route all on-chip
973 * devices to the external APIC.
974 *
975 * TODO: When we have device-specific interrupt routers, this code will go
976 * away from quirks.
977 */
978static void quirk_via_ioapic(struct pci_dev *dev)
979{
980 u8 tmp;
981
982 if (nr_ioapics < 1)
983 tmp = 0; /* nothing routed to external APIC */
984 else
985 tmp = 0x1f; /* all known bits (4-0) routed to external APIC */
986
987 pci_info(dev, "%sbling VIA external APIC routing\n",
988 tmp == 0 ? "Disa" : "Ena");
989
990 /* Offset 0x58: External APIC IRQ output control */
991 pci_write_config_byte(dev, 0x58, tmp);
992}
993DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic);
994DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic);
995
996/*
997 * VIA 8237: Some BIOSes don't set the 'Bypass APIC De-Assert Message' Bit.
998 * This leads to doubled level interrupt rates.
999 * Set this bit to get rid of cycle wastage.
1000 * Otherwise uncritical.
1001 */
1002static void quirk_via_vt8237_bypass_apic_deassert(struct pci_dev *dev)
1003{
1004 u8 misc_control2;
1005#define BYPASS_APIC_DEASSERT 8
1006
1007 pci_read_config_byte(dev, 0x5B, &misc_control2);
1008 if (!(misc_control2 & BYPASS_APIC_DEASSERT)) {
1009 pci_info(dev, "Bypassing VIA 8237 APIC De-Assert Message\n");
1010 pci_write_config_byte(dev, 0x5B, misc_control2|BYPASS_APIC_DEASSERT);
1011 }
1012}
1013DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_vt8237_bypass_apic_deassert);
1014DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_vt8237_bypass_apic_deassert);
1015
1016/*
1017 * The AMD IO-APIC can hang the box when an APIC IRQ is masked.
1018 * We check all revs >= B0 (yet not in the pre production!) as the bug
1019 * is currently marked NoFix
1020 *
1021 * We have multiple reports of hangs with this chipset that went away with
1022 * noapic specified. For the moment we assume it's the erratum. We may be wrong
1023 * of course. However the advice is demonstrably good even if so.
1024 */
1025static void quirk_amd_ioapic(struct pci_dev *dev)
1026{
1027 if (dev->revision >= 0x02) {
1028 pci_warn(dev, "I/O APIC: AMD Erratum #22 may be present. In the event of instability try\n");
1029 pci_warn(dev, " : booting with the \"noapic\" option\n");
1030 }
1031}
1032DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_VIPER_7410, quirk_amd_ioapic);
1033#endif /* CONFIG_X86_IO_APIC */
1034
1035#if defined(CONFIG_ARM64) && defined(CONFIG_PCI_ATS)
1036
1037static void quirk_cavium_sriov_rnm_link(struct pci_dev *dev)
1038{
1039 /* Fix for improper SR-IOV configuration on Cavium cn88xx RNM device */
1040 if (dev->subsystem_device == 0xa118)
1041 dev->sriov->link = dev->devfn;
1042}
1043DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CAVIUM, 0xa018, quirk_cavium_sriov_rnm_link);
1044#endif
1045
1046/*
1047 * Some settings of MMRBC can lead to data corruption so block changes.
1048 * See AMD 8131 HyperTransport PCI-X Tunnel Revision Guide
1049 */
1050static void quirk_amd_8131_mmrbc(struct pci_dev *dev)
1051{
1052 if (dev->subordinate && dev->revision <= 0x12) {
1053 pci_info(dev, "AMD8131 rev %x detected; disabling PCI-X MMRBC\n",
1054 dev->revision);
1055 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MMRBC;
1056 }
1057}
1058DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_amd_8131_mmrbc);
1059
1060/*
1061 * FIXME: it is questionable that quirk_via_acpi() is needed. It shows up
1062 * as an ISA bridge, and does not support the PCI_INTERRUPT_LINE register
1063 * at all. Therefore it seems like setting the pci_dev's IRQ to the value
1064 * of the ACPI SCI interrupt is only done for convenience.
1065 * -jgarzik
1066 */
1067static void quirk_via_acpi(struct pci_dev *d)
1068{
1069 u8 irq;
1070
1071 /* VIA ACPI device: SCI IRQ line in PCI config byte 0x42 */
1072 pci_read_config_byte(d, 0x42, &irq);
1073 irq &= 0xf;
1074 if (irq && (irq != 2))
1075 d->irq = irq;
1076}
1077DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_via_acpi);
1078DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_via_acpi);
1079
1080/* VIA bridges which have VLink */
1081static int via_vlink_dev_lo = -1, via_vlink_dev_hi = 18;
1082
1083static void quirk_via_bridge(struct pci_dev *dev)
1084{
1085 /* See what bridge we have and find the device ranges */
1086 switch (dev->device) {
1087 case PCI_DEVICE_ID_VIA_82C686:
1088 /*
1089 * The VT82C686 is special; it attaches to PCI and can have
1090 * any device number. All its subdevices are functions of
1091 * that single device.
1092 */
1093 via_vlink_dev_lo = PCI_SLOT(dev->devfn);
1094 via_vlink_dev_hi = PCI_SLOT(dev->devfn);
1095 break;
1096 case PCI_DEVICE_ID_VIA_8237:
1097 case PCI_DEVICE_ID_VIA_8237A:
1098 via_vlink_dev_lo = 15;
1099 break;
1100 case PCI_DEVICE_ID_VIA_8235:
1101 via_vlink_dev_lo = 16;
1102 break;
1103 case PCI_DEVICE_ID_VIA_8231:
1104 case PCI_DEVICE_ID_VIA_8233_0:
1105 case PCI_DEVICE_ID_VIA_8233A:
1106 case PCI_DEVICE_ID_VIA_8233C_0:
1107 via_vlink_dev_lo = 17;
1108 break;
1109 }
1110}
1111DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_bridge);
1112DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, quirk_via_bridge);
1113DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233_0, quirk_via_bridge);
1114DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233A, quirk_via_bridge);
1115DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233C_0, quirk_via_bridge);
1116DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_via_bridge);
1117DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_bridge);
1118DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237A, quirk_via_bridge);
1119
1120/*
1121 * quirk_via_vlink - VIA VLink IRQ number update
1122 * @dev: PCI device
1123 *
1124 * If the device we are dealing with is on a PIC IRQ we need to ensure that
1125 * the IRQ line register which usually is not relevant for PCI cards, is
1126 * actually written so that interrupts get sent to the right place.
1127 *
1128 * We only do this on systems where a VIA south bridge was detected, and
1129 * only for VIA devices on the motherboard (see quirk_via_bridge above).
1130 */
1131static void quirk_via_vlink(struct pci_dev *dev)
1132{
1133 u8 irq, new_irq;
1134
1135 /* Check if we have VLink at all */
1136 if (via_vlink_dev_lo == -1)
1137 return;
1138
1139 new_irq = dev->irq;
1140
1141 /* Don't quirk interrupts outside the legacy IRQ range */
1142 if (!new_irq || new_irq > 15)
1143 return;
1144
1145 /* Internal device ? */
1146 if (dev->bus->number != 0 || PCI_SLOT(dev->devfn) > via_vlink_dev_hi ||
1147 PCI_SLOT(dev->devfn) < via_vlink_dev_lo)
1148 return;
1149
1150 /*
1151 * This is an internal VLink device on a PIC interrupt. The BIOS
1152 * ought to have set this but may not have, so we redo it.
1153 */
1154 pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq);
1155 if (new_irq != irq) {
1156 pci_info(dev, "VIA VLink IRQ fixup, from %d to %d\n",
1157 irq, new_irq);
1158 udelay(15); /* unknown if delay really needed */
1159 pci_write_config_byte(dev, PCI_INTERRUPT_LINE, new_irq);
1160 }
1161}
1162DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_ANY_ID, quirk_via_vlink);
1163
1164/*
1165 * VIA VT82C598 has its device ID settable and many BIOSes set it to the ID
1166 * of VT82C597 for backward compatibility. We need to switch it off to be
1167 * able to recognize the real type of the chip.
1168 */
1169static void quirk_vt82c598_id(struct pci_dev *dev)
1170{
1171 pci_write_config_byte(dev, 0xfc, 0);
1172 pci_read_config_word(dev, PCI_DEVICE_ID, &dev->device);
1173}
1174DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_vt82c598_id);
1175
1176/*
1177 * CardBus controllers have a legacy base address that enables them to
1178 * respond as i82365 pcmcia controllers. We don't want them to do this
1179 * even if the Linux CardBus driver is not loaded, because the Linux i82365
1180 * driver does not (and should not) handle CardBus.
1181 */
1182static void quirk_cardbus_legacy(struct pci_dev *dev)
1183{
1184 pci_write_config_dword(dev, PCI_CB_LEGACY_MODE_BASE, 0);
1185}
1186DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_ANY_ID, PCI_ANY_ID,
1187 PCI_CLASS_BRIDGE_CARDBUS, 8, quirk_cardbus_legacy);
1188DECLARE_PCI_FIXUP_CLASS_RESUME_EARLY(PCI_ANY_ID, PCI_ANY_ID,
1189 PCI_CLASS_BRIDGE_CARDBUS, 8, quirk_cardbus_legacy);
1190
1191/*
1192 * Following the PCI ordering rules is optional on the AMD762. I'm not sure
1193 * what the designers were smoking but let's not inhale...
1194 *
1195 * To be fair to AMD, it follows the spec by default, it's BIOS people who
1196 * turn it off!
1197 */
1198static void quirk_amd_ordering(struct pci_dev *dev)
1199{
1200 u32 pcic;
1201 pci_read_config_dword(dev, 0x4C, &pcic);
1202 if ((pcic & 6) != 6) {
1203 pcic |= 6;
1204 pci_warn(dev, "BIOS failed to enable PCI standards compliance; fixing this error\n");
1205 pci_write_config_dword(dev, 0x4C, pcic);
1206 pci_read_config_dword(dev, 0x84, &pcic);
1207 pcic |= (1 << 23); /* Required in this mode */
1208 pci_write_config_dword(dev, 0x84, pcic);
1209 }
1210}
1211DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering);
1212DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering);
1213
1214/*
1215 * DreamWorks-provided workaround for Dunord I-3000 problem
1216 *
1217 * This card decodes and responds to addresses not apparently assigned to
1218 * it. We force a larger allocation to ensure that nothing gets put too
1219 * close to it.
1220 */
1221static void quirk_dunord(struct pci_dev *dev)
1222{
1223 struct resource *r = &dev->resource[1];
1224
1225 r->flags |= IORESOURCE_UNSET;
1226 r->start = 0;
1227 r->end = 0xffffff;
1228}
1229DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_DUNORD, PCI_DEVICE_ID_DUNORD_I3000, quirk_dunord);
1230
1231/*
1232 * i82380FB mobile docking controller: its PCI-to-PCI bridge is subtractive
1233 * decoding (transparent), and does indicate this in the ProgIf.
1234 * Unfortunately, the ProgIf value is wrong - 0x80 instead of 0x01.
1235 */
1236static void quirk_transparent_bridge(struct pci_dev *dev)
1237{
1238 dev->transparent = 1;
1239}
1240DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82380FB, quirk_transparent_bridge);
1241DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA, 0x605, quirk_transparent_bridge);
1242
1243/*
1244 * Common misconfiguration of the MediaGX/Geode PCI master that will reduce
1245 * PCI bandwidth from 70MB/s to 25MB/s. See the GXM/GXLV/GX1 datasheets
1246 * found at http://www.national.com/analog for info on what these bits do.
1247 * <christer@weinigel.se>
1248 */
1249static void quirk_mediagx_master(struct pci_dev *dev)
1250{
1251 u8 reg;
1252
1253 pci_read_config_byte(dev, 0x41, ®);
1254 if (reg & 2) {
1255 reg &= ~2;
1256 pci_info(dev, "Fixup for MediaGX/Geode Slave Disconnect Boundary (0x41=0x%02x)\n",
1257 reg);
1258 pci_write_config_byte(dev, 0x41, reg);
1259 }
1260}
1261DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master);
1262DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master);
1263
1264/*
1265 * Ensure C0 rev restreaming is off. This is normally done by the BIOS but
1266 * in the odd case it is not the results are corruption hence the presence
1267 * of a Linux check.
1268 */
1269static void quirk_disable_pxb(struct pci_dev *pdev)
1270{
1271 u16 config;
1272
1273 if (pdev->revision != 0x04) /* Only C0 requires this */
1274 return;
1275 pci_read_config_word(pdev, 0x40, &config);
1276 if (config & (1<<6)) {
1277 config &= ~(1<<6);
1278 pci_write_config_word(pdev, 0x40, config);
1279 pci_info(pdev, "C0 revision 450NX. Disabling PCI restreaming\n");
1280 }
1281}
1282DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb);
1283DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb);
1284
1285static void quirk_amd_ide_mode(struct pci_dev *pdev)
1286{
1287 /* set SBX00/Hudson-2 SATA in IDE mode to AHCI mode */
1288 u8 tmp;
1289
1290 pci_read_config_byte(pdev, PCI_CLASS_DEVICE, &tmp);
1291 if (tmp == 0x01) {
1292 pci_read_config_byte(pdev, 0x40, &tmp);
1293 pci_write_config_byte(pdev, 0x40, tmp|1);
1294 pci_write_config_byte(pdev, 0x9, 1);
1295 pci_write_config_byte(pdev, 0xa, 6);
1296 pci_write_config_byte(pdev, 0x40, tmp);
1297
1298 pdev->class = PCI_CLASS_STORAGE_SATA_AHCI;
1299 pci_info(pdev, "set SATA to AHCI mode\n");
1300 }
1301}
1302DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode);
1303DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode);
1304DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode);
1305DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode);
1306DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_HUDSON2_SATA_IDE, quirk_amd_ide_mode);
1307DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_HUDSON2_SATA_IDE, quirk_amd_ide_mode);
1308DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, 0x7900, quirk_amd_ide_mode);
1309DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, 0x7900, quirk_amd_ide_mode);
1310
1311/* Serverworks CSB5 IDE does not fully support native mode */
1312static void quirk_svwks_csb5ide(struct pci_dev *pdev)
1313{
1314 u8 prog;
1315 pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog);
1316 if (prog & 5) {
1317 prog &= ~5;
1318 pdev->class &= ~5;
1319 pci_write_config_byte(pdev, PCI_CLASS_PROG, prog);
1320 /* PCI layer will sort out resources */
1321 }
1322}
1323DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_CSB5IDE, quirk_svwks_csb5ide);
1324
1325/* Intel 82801CAM ICH3-M datasheet says IDE modes must be the same */
1326static void quirk_ide_samemode(struct pci_dev *pdev)
1327{
1328 u8 prog;
1329
1330 pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog);
1331
1332 if (((prog & 1) && !(prog & 4)) || ((prog & 4) && !(prog & 1))) {
1333 pci_info(pdev, "IDE mode mismatch; forcing legacy mode\n");
1334 prog &= ~5;
1335 pdev->class &= ~5;
1336 pci_write_config_byte(pdev, PCI_CLASS_PROG, prog);
1337 }
1338}
1339DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_10, quirk_ide_samemode);
1340
1341/* Some ATA devices break if put into D3 */
1342static void quirk_no_ata_d3(struct pci_dev *pdev)
1343{
1344 pdev->dev_flags |= PCI_DEV_FLAGS_NO_D3;
1345}
1346/* Quirk the legacy ATA devices only. The AHCI ones are ok */
1347DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_ANY_ID,
1348 PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
1349DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_ATI, PCI_ANY_ID,
1350 PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
1351/* ALi loses some register settings that we cannot then restore */
1352DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AL, PCI_ANY_ID,
1353 PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
1354/* VIA comes back fine but we need to keep it alive or ACPI GTM failures
1355 occur when mode detecting */
1356DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_VIA, PCI_ANY_ID,
1357 PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
1358
1359/*
1360 * This was originally an Alpha-specific thing, but it really fits here.
1361 * The i82375 PCI/EISA bridge appears as non-classified. Fix that.
1362 */
1363static void quirk_eisa_bridge(struct pci_dev *dev)
1364{
1365 dev->class = PCI_CLASS_BRIDGE_EISA << 8;
1366}
1367DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82375, quirk_eisa_bridge);
1368
1369/*
1370 * On ASUS P4B boards, the SMBus PCI Device within the ICH2/4 southbridge
1371 * is not activated. The myth is that Asus said that they do not want the
1372 * users to be irritated by just another PCI Device in the Win98 device
1373 * manager. (see the file prog/hotplug/README.p4b in the lm_sensors
1374 * package 2.7.0 for details)
1375 *
1376 * The SMBus PCI Device can be activated by setting a bit in the ICH LPC
1377 * bridge. Unfortunately, this device has no subvendor/subdevice ID. So it
1378 * becomes necessary to do this tweak in two steps -- the chosen trigger
1379 * is either the Host bridge (preferred) or on-board VGA controller.
1380 *
1381 * Note that we used to unhide the SMBus that way on Toshiba laptops
1382 * (Satellite A40 and Tecra M2) but then found that the thermal management
1383 * was done by SMM code, which could cause unsynchronized concurrent
1384 * accesses to the SMBus registers, with potentially bad effects. Thus you
1385 * should be very careful when adding new entries: if SMM is accessing the
1386 * Intel SMBus, this is a very good reason to leave it hidden.
1387 *
1388 * Likewise, many recent laptops use ACPI for thermal management. If the
1389 * ACPI DSDT code accesses the SMBus, then Linux should not access it
1390 * natively, and keeping the SMBus hidden is the right thing to do. If you
1391 * are about to add an entry in the table below, please first disassemble
1392 * the DSDT and double-check that there is no code accessing the SMBus.
1393 */
1394static int asus_hides_smbus;
1395
1396static void asus_hides_smbus_hostbridge(struct pci_dev *dev)
1397{
1398 if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) {
1399 if (dev->device == PCI_DEVICE_ID_INTEL_82845_HB)
1400 switch (dev->subsystem_device) {
1401 case 0x8025: /* P4B-LX */
1402 case 0x8070: /* P4B */
1403 case 0x8088: /* P4B533 */
1404 case 0x1626: /* L3C notebook */
1405 asus_hides_smbus = 1;
1406 }
1407 else if (dev->device == PCI_DEVICE_ID_INTEL_82845G_HB)
1408 switch (dev->subsystem_device) {
1409 case 0x80b1: /* P4GE-V */
1410 case 0x80b2: /* P4PE */
1411 case 0x8093: /* P4B533-V */
1412 asus_hides_smbus = 1;
1413 }
1414 else if (dev->device == PCI_DEVICE_ID_INTEL_82850_HB)
1415 switch (dev->subsystem_device) {
1416 case 0x8030: /* P4T533 */
1417 asus_hides_smbus = 1;
1418 }
1419 else if (dev->device == PCI_DEVICE_ID_INTEL_7205_0)
1420 switch (dev->subsystem_device) {
1421 case 0x8070: /* P4G8X Deluxe */
1422 asus_hides_smbus = 1;
1423 }
1424 else if (dev->device == PCI_DEVICE_ID_INTEL_E7501_MCH)
1425 switch (dev->subsystem_device) {
1426 case 0x80c9: /* PU-DLS */
1427 asus_hides_smbus = 1;
1428 }
1429 else if (dev->device == PCI_DEVICE_ID_INTEL_82855GM_HB)
1430 switch (dev->subsystem_device) {
1431 case 0x1751: /* M2N notebook */
1432 case 0x1821: /* M5N notebook */
1433 case 0x1897: /* A6L notebook */
1434 asus_hides_smbus = 1;
1435 }
1436 else if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1437 switch (dev->subsystem_device) {
1438 case 0x184b: /* W1N notebook */
1439 case 0x186a: /* M6Ne notebook */
1440 asus_hides_smbus = 1;
1441 }
1442 else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB)
1443 switch (dev->subsystem_device) {
1444 case 0x80f2: /* P4P800-X */
1445 asus_hides_smbus = 1;
1446 }
1447 else if (dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB)
1448 switch (dev->subsystem_device) {
1449 case 0x1882: /* M6V notebook */
1450 case 0x1977: /* A6VA notebook */
1451 asus_hides_smbus = 1;
1452 }
1453 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_HP)) {
1454 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1455 switch (dev->subsystem_device) {
1456 case 0x088C: /* HP Compaq nc8000 */
1457 case 0x0890: /* HP Compaq nc6000 */
1458 asus_hides_smbus = 1;
1459 }
1460 else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB)
1461 switch (dev->subsystem_device) {
1462 case 0x12bc: /* HP D330L */
1463 case 0x12bd: /* HP D530 */
1464 case 0x006a: /* HP Compaq nx9500 */
1465 asus_hides_smbus = 1;
1466 }
1467 else if (dev->device == PCI_DEVICE_ID_INTEL_82875_HB)
1468 switch (dev->subsystem_device) {
1469 case 0x12bf: /* HP xw4100 */
1470 asus_hides_smbus = 1;
1471 }
1472 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG)) {
1473 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1474 switch (dev->subsystem_device) {
1475 case 0xC00C: /* Samsung P35 notebook */
1476 asus_hides_smbus = 1;
1477 }
1478 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ)) {
1479 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1480 switch (dev->subsystem_device) {
1481 case 0x0058: /* Compaq Evo N620c */
1482 asus_hides_smbus = 1;
1483 }
1484 else if (dev->device == PCI_DEVICE_ID_INTEL_82810_IG3)
1485 switch (dev->subsystem_device) {
1486 case 0xB16C: /* Compaq Deskpro EP 401963-001 (PCA# 010174) */
1487 /* Motherboard doesn't have Host bridge
1488 * subvendor/subdevice IDs, therefore checking
1489 * its on-board VGA controller */
1490 asus_hides_smbus = 1;
1491 }
1492 else if (dev->device == PCI_DEVICE_ID_INTEL_82801DB_2)
1493 switch (dev->subsystem_device) {
1494 case 0x00b8: /* Compaq Evo D510 CMT */
1495 case 0x00b9: /* Compaq Evo D510 SFF */
1496 case 0x00ba: /* Compaq Evo D510 USDT */
1497 /* Motherboard doesn't have Host bridge
1498 * subvendor/subdevice IDs and on-board VGA
1499 * controller is disabled if an AGP card is
1500 * inserted, therefore checking USB UHCI
1501 * Controller #1 */
1502 asus_hides_smbus = 1;
1503 }
1504 else if (dev->device == PCI_DEVICE_ID_INTEL_82815_CGC)
1505 switch (dev->subsystem_device) {
1506 case 0x001A: /* Compaq Deskpro EN SSF P667 815E */
1507 /* Motherboard doesn't have host bridge
1508 * subvendor/subdevice IDs, therefore checking
1509 * its on-board VGA controller */
1510 asus_hides_smbus = 1;
1511 }
1512 }
1513}
1514DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845_HB, asus_hides_smbus_hostbridge);
1515DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845G_HB, asus_hides_smbus_hostbridge);
1516DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82850_HB, asus_hides_smbus_hostbridge);
1517DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82865_HB, asus_hides_smbus_hostbridge);
1518DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82875_HB, asus_hides_smbus_hostbridge);
1519DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_7205_0, asus_hides_smbus_hostbridge);
1520DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7501_MCH, asus_hides_smbus_hostbridge);
1521DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855PM_HB, asus_hides_smbus_hostbridge);
1522DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855GM_HB, asus_hides_smbus_hostbridge);
1523DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82915GM_HB, asus_hides_smbus_hostbridge);
1524
1525DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82810_IG3, asus_hides_smbus_hostbridge);
1526DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_2, asus_hides_smbus_hostbridge);
1527DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82815_CGC, asus_hides_smbus_hostbridge);
1528
1529static void asus_hides_smbus_lpc(struct pci_dev *dev)
1530{
1531 u16 val;
1532
1533 if (likely(!asus_hides_smbus))
1534 return;
1535
1536 pci_read_config_word(dev, 0xF2, &val);
1537 if (val & 0x8) {
1538 pci_write_config_word(dev, 0xF2, val & (~0x8));
1539 pci_read_config_word(dev, 0xF2, &val);
1540 if (val & 0x8)
1541 pci_info(dev, "i801 SMBus device continues to play 'hide and seek'! 0x%x\n",
1542 val);
1543 else
1544 pci_info(dev, "Enabled i801 SMBus device\n");
1545 }
1546}
1547DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, asus_hides_smbus_lpc);
1548DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc);
1549DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc);
1550DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, asus_hides_smbus_lpc);
1551DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc);
1552DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc);
1553DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc);
1554DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, asus_hides_smbus_lpc);
1555DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc);
1556DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc);
1557DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, asus_hides_smbus_lpc);
1558DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc);
1559DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc);
1560DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc);
1561
1562/* It appears we just have one such device. If not, we have a warning */
1563static void __iomem *asus_rcba_base;
1564static void asus_hides_smbus_lpc_ich6_suspend(struct pci_dev *dev)
1565{
1566 u32 rcba;
1567
1568 if (likely(!asus_hides_smbus))
1569 return;
1570 WARN_ON(asus_rcba_base);
1571
1572 pci_read_config_dword(dev, 0xF0, &rcba);
1573 /* use bits 31:14, 16 kB aligned */
1574 asus_rcba_base = ioremap_nocache(rcba & 0xFFFFC000, 0x4000);
1575 if (asus_rcba_base == NULL)
1576 return;
1577}
1578
1579static void asus_hides_smbus_lpc_ich6_resume_early(struct pci_dev *dev)
1580{
1581 u32 val;
1582
1583 if (likely(!asus_hides_smbus || !asus_rcba_base))
1584 return;
1585
1586 /* read the Function Disable register, dword mode only */
1587 val = readl(asus_rcba_base + 0x3418);
1588
1589 /* enable the SMBus device */
1590 writel(val & 0xFFFFFFF7, asus_rcba_base + 0x3418);
1591}
1592
1593static void asus_hides_smbus_lpc_ich6_resume(struct pci_dev *dev)
1594{
1595 if (likely(!asus_hides_smbus || !asus_rcba_base))
1596 return;
1597
1598 iounmap(asus_rcba_base);
1599 asus_rcba_base = NULL;
1600 pci_info(dev, "Enabled ICH6/i801 SMBus device\n");
1601}
1602
1603static void asus_hides_smbus_lpc_ich6(struct pci_dev *dev)
1604{
1605 asus_hides_smbus_lpc_ich6_suspend(dev);
1606 asus_hides_smbus_lpc_ich6_resume_early(dev);
1607 asus_hides_smbus_lpc_ich6_resume(dev);
1608}
1609DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6);
1610DECLARE_PCI_FIXUP_SUSPEND(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_suspend);
1611DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_resume);
1612DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_resume_early);
1613
1614/* SiS 96x south bridge: BIOS typically hides SMBus device... */
1615static void quirk_sis_96x_smbus(struct pci_dev *dev)
1616{
1617 u8 val = 0;
1618 pci_read_config_byte(dev, 0x77, &val);
1619 if (val & 0x10) {
1620 pci_info(dev, "Enabling SiS 96x SMBus\n");
1621 pci_write_config_byte(dev, 0x77, val & ~0x10);
1622 }
1623}
1624DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_961, quirk_sis_96x_smbus);
1625DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_962, quirk_sis_96x_smbus);
1626DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_963, quirk_sis_96x_smbus);
1627DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC, quirk_sis_96x_smbus);
1628DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_961, quirk_sis_96x_smbus);
1629DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_962, quirk_sis_96x_smbus);
1630DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_963, quirk_sis_96x_smbus);
1631DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC, quirk_sis_96x_smbus);
1632
1633/*
1634 * ... This is further complicated by the fact that some SiS96x south
1635 * bridges pretend to be 85C503/5513 instead. In that case see if we
1636 * spotted a compatible north bridge to make sure.
1637 * (pci_find_device() doesn't work yet)
1638 *
1639 * We can also enable the sis96x bit in the discovery register..
1640 */
1641#define SIS_DETECT_REGISTER 0x40
1642
1643static void quirk_sis_503(struct pci_dev *dev)
1644{
1645 u8 reg;
1646 u16 devid;
1647
1648 pci_read_config_byte(dev, SIS_DETECT_REGISTER, ®);
1649 pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg | (1 << 6));
1650 pci_read_config_word(dev, PCI_DEVICE_ID, &devid);
1651 if (((devid & 0xfff0) != 0x0960) && (devid != 0x0018)) {
1652 pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg);
1653 return;
1654 }
1655
1656 /*
1657 * Ok, it now shows up as a 96x. Run the 96x quirk by hand in case
1658 * it has already been processed. (Depends on link order, which is
1659 * apparently not guaranteed)
1660 */
1661 dev->device = devid;
1662 quirk_sis_96x_smbus(dev);
1663}
1664DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, quirk_sis_503);
1665DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, quirk_sis_503);
1666
1667/*
1668 * On ASUS A8V and A8V Deluxe boards, the onboard AC97 audio controller
1669 * and MC97 modem controller are disabled when a second PCI soundcard is
1670 * present. This patch, tweaking the VT8237 ISA bridge, enables them.
1671 * -- bjd
1672 */
1673static void asus_hides_ac97_lpc(struct pci_dev *dev)
1674{
1675 u8 val;
1676 int asus_hides_ac97 = 0;
1677
1678 if (likely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) {
1679 if (dev->device == PCI_DEVICE_ID_VIA_8237)
1680 asus_hides_ac97 = 1;
1681 }
1682
1683 if (!asus_hides_ac97)
1684 return;
1685
1686 pci_read_config_byte(dev, 0x50, &val);
1687 if (val & 0xc0) {
1688 pci_write_config_byte(dev, 0x50, val & (~0xc0));
1689 pci_read_config_byte(dev, 0x50, &val);
1690 if (val & 0xc0)
1691 pci_info(dev, "Onboard AC97/MC97 devices continue to play 'hide and seek'! 0x%x\n",
1692 val);
1693 else
1694 pci_info(dev, "Enabled onboard AC97/MC97 devices\n");
1695 }
1696}
1697DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc);
1698DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc);
1699
1700#if defined(CONFIG_ATA) || defined(CONFIG_ATA_MODULE)
1701
1702/*
1703 * If we are using libata we can drive this chip properly but must do this
1704 * early on to make the additional device appear during the PCI scanning.
1705 */
1706static void quirk_jmicron_ata(struct pci_dev *pdev)
1707{
1708 u32 conf1, conf5, class;
1709 u8 hdr;
1710
1711 /* Only poke fn 0 */
1712 if (PCI_FUNC(pdev->devfn))
1713 return;
1714
1715 pci_read_config_dword(pdev, 0x40, &conf1);
1716 pci_read_config_dword(pdev, 0x80, &conf5);
1717
1718 conf1 &= ~0x00CFF302; /* Clear bit 1, 8, 9, 12-19, 22, 23 */
1719 conf5 &= ~(1 << 24); /* Clear bit 24 */
1720
1721 switch (pdev->device) {
1722 case PCI_DEVICE_ID_JMICRON_JMB360: /* SATA single port */
1723 case PCI_DEVICE_ID_JMICRON_JMB362: /* SATA dual ports */
1724 case PCI_DEVICE_ID_JMICRON_JMB364: /* SATA dual ports */
1725 /* The controller should be in single function ahci mode */
1726 conf1 |= 0x0002A100; /* Set 8, 13, 15, 17 */
1727 break;
1728
1729 case PCI_DEVICE_ID_JMICRON_JMB365:
1730 case PCI_DEVICE_ID_JMICRON_JMB366:
1731 /* Redirect IDE second PATA port to the right spot */
1732 conf5 |= (1 << 24);
1733 /* Fall through */
1734 case PCI_DEVICE_ID_JMICRON_JMB361:
1735 case PCI_DEVICE_ID_JMICRON_JMB363:
1736 case PCI_DEVICE_ID_JMICRON_JMB369:
1737 /* Enable dual function mode, AHCI on fn 0, IDE fn1 */
1738 /* Set the class codes correctly and then direct IDE 0 */
1739 conf1 |= 0x00C2A1B3; /* Set 0, 1, 4, 5, 7, 8, 13, 15, 17, 22, 23 */
1740 break;
1741
1742 case PCI_DEVICE_ID_JMICRON_JMB368:
1743 /* The controller should be in single function IDE mode */
1744 conf1 |= 0x00C00000; /* Set 22, 23 */
1745 break;
1746 }
1747
1748 pci_write_config_dword(pdev, 0x40, conf1);
1749 pci_write_config_dword(pdev, 0x80, conf5);
1750
1751 /* Update pdev accordingly */
1752 pci_read_config_byte(pdev, PCI_HEADER_TYPE, &hdr);
1753 pdev->hdr_type = hdr & 0x7f;
1754 pdev->multifunction = !!(hdr & 0x80);
1755
1756 pci_read_config_dword(pdev, PCI_CLASS_REVISION, &class);
1757 pdev->class = class >> 8;
1758}
1759DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata);
1760DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata);
1761DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB362, quirk_jmicron_ata);
1762DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata);
1763DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB364, quirk_jmicron_ata);
1764DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata);
1765DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata);
1766DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata);
1767DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB369, quirk_jmicron_ata);
1768DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata);
1769DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata);
1770DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB362, quirk_jmicron_ata);
1771DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata);
1772DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB364, quirk_jmicron_ata);
1773DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata);
1774DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata);
1775DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata);
1776DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB369, quirk_jmicron_ata);
1777
1778#endif
1779
1780static void quirk_jmicron_async_suspend(struct pci_dev *dev)
1781{
1782 if (dev->multifunction) {
1783 device_disable_async_suspend(&dev->dev);
1784 pci_info(dev, "async suspend disabled to avoid multi-function power-on ordering issue\n");
1785 }
1786}
1787DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE, 8, quirk_jmicron_async_suspend);
1788DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_CLASS_STORAGE_SATA_AHCI, 0, quirk_jmicron_async_suspend);
1789DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_JMICRON, 0x2362, quirk_jmicron_async_suspend);
1790DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_JMICRON, 0x236f, quirk_jmicron_async_suspend);
1791
1792#ifdef CONFIG_X86_IO_APIC
1793static void quirk_alder_ioapic(struct pci_dev *pdev)
1794{
1795 int i;
1796
1797 if ((pdev->class >> 8) != 0xff00)
1798 return;
1799
1800 /*
1801 * The first BAR is the location of the IO-APIC... we must
1802 * not touch this (and it's already covered by the fixmap), so
1803 * forcibly insert it into the resource tree.
1804 */
1805 if (pci_resource_start(pdev, 0) && pci_resource_len(pdev, 0))
1806 insert_resource(&iomem_resource, &pdev->resource[0]);
1807
1808 /*
1809 * The next five BARs all seem to be rubbish, so just clean
1810 * them out.
1811 */
1812 for (i = 1; i < 6; i++)
1813 memset(&pdev->resource[i], 0, sizeof(pdev->resource[i]));
1814}
1815DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_EESSC, quirk_alder_ioapic);
1816#endif
1817
1818static void quirk_pcie_mch(struct pci_dev *pdev)
1819{
1820 pdev->no_msi = 1;
1821}
1822DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7520_MCH, quirk_pcie_mch);
1823DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7320_MCH, quirk_pcie_mch);
1824DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7525_MCH, quirk_pcie_mch);
1825
1826DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_HUAWEI, 0x1610, PCI_CLASS_BRIDGE_PCI, 8, quirk_pcie_mch);
1827
1828/*
1829 * It's possible for the MSI to get corrupted if SHPC and ACPI are used
1830 * together on certain PXH-based systems.
1831 */
1832static void quirk_pcie_pxh(struct pci_dev *dev)
1833{
1834 dev->no_msi = 1;
1835 pci_warn(dev, "PXH quirk detected; SHPC device MSI disabled\n");
1836}
1837DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_0, quirk_pcie_pxh);
1838DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_1, quirk_pcie_pxh);
1839DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_pcie_pxh);
1840DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_pcie_pxh);
1841DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_pcie_pxh);
1842
1843/*
1844 * Some Intel PCI Express chipsets have trouble with downstream device
1845 * power management.
1846 */
1847static void quirk_intel_pcie_pm(struct pci_dev *dev)
1848{
1849 pci_pm_d3_delay = 120;
1850 dev->no_d1d2 = 1;
1851}
1852DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e2, quirk_intel_pcie_pm);
1853DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e3, quirk_intel_pcie_pm);
1854DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e4, quirk_intel_pcie_pm);
1855DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e5, quirk_intel_pcie_pm);
1856DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e6, quirk_intel_pcie_pm);
1857DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e7, quirk_intel_pcie_pm);
1858DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f7, quirk_intel_pcie_pm);
1859DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f8, quirk_intel_pcie_pm);
1860DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f9, quirk_intel_pcie_pm);
1861DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25fa, quirk_intel_pcie_pm);
1862DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2601, quirk_intel_pcie_pm);
1863DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2602, quirk_intel_pcie_pm);
1864DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2603, quirk_intel_pcie_pm);
1865DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2604, quirk_intel_pcie_pm);
1866DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2605, quirk_intel_pcie_pm);
1867DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2606, quirk_intel_pcie_pm);
1868DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2607, quirk_intel_pcie_pm);
1869DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2608, quirk_intel_pcie_pm);
1870DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2609, quirk_intel_pcie_pm);
1871DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260a, quirk_intel_pcie_pm);
1872DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260b, quirk_intel_pcie_pm);
1873
1874static void quirk_radeon_pm(struct pci_dev *dev)
1875{
1876 if (dev->subsystem_vendor == PCI_VENDOR_ID_APPLE &&
1877 dev->subsystem_device == 0x00e2) {
1878 if (dev->d3_delay < 20) {
1879 dev->d3_delay = 20;
1880 pci_info(dev, "extending delay after power-on from D3 to %d msec\n",
1881 dev->d3_delay);
1882 }
1883 }
1884}
1885DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x6741, quirk_radeon_pm);
1886
1887#ifdef CONFIG_X86_IO_APIC
1888static int dmi_disable_ioapicreroute(const struct dmi_system_id *d)
1889{
1890 noioapicreroute = 1;
1891 pr_info("%s detected: disable boot interrupt reroute\n", d->ident);
1892
1893 return 0;
1894}
1895
1896static const struct dmi_system_id boot_interrupt_dmi_table[] = {
1897 /*
1898 * Systems to exclude from boot interrupt reroute quirks
1899 */
1900 {
1901 .callback = dmi_disable_ioapicreroute,
1902 .ident = "ASUSTek Computer INC. M2N-LR",
1903 .matches = {
1904 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTek Computer INC."),
1905 DMI_MATCH(DMI_PRODUCT_NAME, "M2N-LR"),
1906 },
1907 },
1908 {}
1909};
1910
1911/*
1912 * Boot interrupts on some chipsets cannot be turned off. For these chipsets,
1913 * remap the original interrupt in the Linux kernel to the boot interrupt, so
1914 * that a PCI device's interrupt handler is installed on the boot interrupt
1915 * line instead.
1916 */
1917static void quirk_reroute_to_boot_interrupts_intel(struct pci_dev *dev)
1918{
1919 dmi_check_system(boot_interrupt_dmi_table);
1920 if (noioapicquirk || noioapicreroute)
1921 return;
1922
1923 dev->irq_reroute_variant = INTEL_IRQ_REROUTE_VARIANT;
1924 pci_info(dev, "rerouting interrupts for [%04x:%04x]\n",
1925 dev->vendor, dev->device);
1926}
1927DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_0, quirk_reroute_to_boot_interrupts_intel);
1928DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_1, quirk_reroute_to_boot_interrupts_intel);
1929DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB2_0, quirk_reroute_to_boot_interrupts_intel);
1930DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_reroute_to_boot_interrupts_intel);
1931DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_reroute_to_boot_interrupts_intel);
1932DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_reroute_to_boot_interrupts_intel);
1933DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_0, quirk_reroute_to_boot_interrupts_intel);
1934DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_1, quirk_reroute_to_boot_interrupts_intel);
1935DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_0, quirk_reroute_to_boot_interrupts_intel);
1936DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_1, quirk_reroute_to_boot_interrupts_intel);
1937DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB2_0, quirk_reroute_to_boot_interrupts_intel);
1938DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_reroute_to_boot_interrupts_intel);
1939DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_reroute_to_boot_interrupts_intel);
1940DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_reroute_to_boot_interrupts_intel);
1941DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_0, quirk_reroute_to_boot_interrupts_intel);
1942DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_1, quirk_reroute_to_boot_interrupts_intel);
1943
1944/*
1945 * On some chipsets we can disable the generation of legacy INTx boot
1946 * interrupts.
1947 */
1948
1949/*
1950 * IO-APIC1 on 6300ESB generates boot interrupts, see Intel order no
1951 * 300641-004US, section 5.7.3.
1952 */
1953#define INTEL_6300_IOAPIC_ABAR 0x40
1954#define INTEL_6300_DISABLE_BOOT_IRQ (1<<14)
1955
1956static void quirk_disable_intel_boot_interrupt(struct pci_dev *dev)
1957{
1958 u16 pci_config_word;
1959
1960 if (noioapicquirk)
1961 return;
1962
1963 pci_read_config_word(dev, INTEL_6300_IOAPIC_ABAR, &pci_config_word);
1964 pci_config_word |= INTEL_6300_DISABLE_BOOT_IRQ;
1965 pci_write_config_word(dev, INTEL_6300_IOAPIC_ABAR, pci_config_word);
1966
1967 pci_info(dev, "disabled boot interrupts on device [%04x:%04x]\n",
1968 dev->vendor, dev->device);
1969}
1970DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_10, quirk_disable_intel_boot_interrupt);
1971DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_10, quirk_disable_intel_boot_interrupt);
1972
1973/* Disable boot interrupts on HT-1000 */
1974#define BC_HT1000_FEATURE_REG 0x64
1975#define BC_HT1000_PIC_REGS_ENABLE (1<<0)
1976#define BC_HT1000_MAP_IDX 0xC00
1977#define BC_HT1000_MAP_DATA 0xC01
1978
1979static void quirk_disable_broadcom_boot_interrupt(struct pci_dev *dev)
1980{
1981 u32 pci_config_dword;
1982 u8 irq;
1983
1984 if (noioapicquirk)
1985 return;
1986
1987 pci_read_config_dword(dev, BC_HT1000_FEATURE_REG, &pci_config_dword);
1988 pci_write_config_dword(dev, BC_HT1000_FEATURE_REG, pci_config_dword |
1989 BC_HT1000_PIC_REGS_ENABLE);
1990
1991 for (irq = 0x10; irq < 0x10 + 32; irq++) {
1992 outb(irq, BC_HT1000_MAP_IDX);
1993 outb(0x00, BC_HT1000_MAP_DATA);
1994 }
1995
1996 pci_write_config_dword(dev, BC_HT1000_FEATURE_REG, pci_config_dword);
1997
1998 pci_info(dev, "disabled boot interrupts on device [%04x:%04x]\n",
1999 dev->vendor, dev->device);
2000}
2001DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000SB, quirk_disable_broadcom_boot_interrupt);
2002DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000SB, quirk_disable_broadcom_boot_interrupt);
2003
2004/* Disable boot interrupts on AMD and ATI chipsets */
2005
2006/*
2007 * NOIOAMODE needs to be disabled to disable "boot interrupts". For AMD 8131
2008 * rev. A0 and B0, NOIOAMODE needs to be disabled anyway to fix IO-APIC mode
2009 * (due to an erratum).
2010 */
2011#define AMD_813X_MISC 0x40
2012#define AMD_813X_NOIOAMODE (1<<0)
2013#define AMD_813X_REV_B1 0x12
2014#define AMD_813X_REV_B2 0x13
2015
2016static void quirk_disable_amd_813x_boot_interrupt(struct pci_dev *dev)
2017{
2018 u32 pci_config_dword;
2019
2020 if (noioapicquirk)
2021 return;
2022 if ((dev->revision == AMD_813X_REV_B1) ||
2023 (dev->revision == AMD_813X_REV_B2))
2024 return;
2025
2026 pci_read_config_dword(dev, AMD_813X_MISC, &pci_config_dword);
2027 pci_config_dword &= ~AMD_813X_NOIOAMODE;
2028 pci_write_config_dword(dev, AMD_813X_MISC, pci_config_dword);
2029
2030 pci_info(dev, "disabled boot interrupts on device [%04x:%04x]\n",
2031 dev->vendor, dev->device);
2032}
2033DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
2034DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
2035DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
2036DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
2037
2038#define AMD_8111_PCI_IRQ_ROUTING 0x56
2039
2040static void quirk_disable_amd_8111_boot_interrupt(struct pci_dev *dev)
2041{
2042 u16 pci_config_word;
2043
2044 if (noioapicquirk)
2045 return;
2046
2047 pci_read_config_word(dev, AMD_8111_PCI_IRQ_ROUTING, &pci_config_word);
2048 if (!pci_config_word) {
2049 pci_info(dev, "boot interrupts on device [%04x:%04x] already disabled\n",
2050 dev->vendor, dev->device);
2051 return;
2052 }
2053 pci_write_config_word(dev, AMD_8111_PCI_IRQ_ROUTING, 0);
2054 pci_info(dev, "disabled boot interrupts on device [%04x:%04x]\n",
2055 dev->vendor, dev->device);
2056}
2057DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_SMBUS, quirk_disable_amd_8111_boot_interrupt);
2058DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_SMBUS, quirk_disable_amd_8111_boot_interrupt);
2059#endif /* CONFIG_X86_IO_APIC */
2060
2061/*
2062 * Toshiba TC86C001 IDE controller reports the standard 8-byte BAR0 size
2063 * but the PIO transfers won't work if BAR0 falls at the odd 8 bytes.
2064 * Re-allocate the region if needed...
2065 */
2066static void quirk_tc86c001_ide(struct pci_dev *dev)
2067{
2068 struct resource *r = &dev->resource[0];
2069
2070 if (r->start & 0x8) {
2071 r->flags |= IORESOURCE_UNSET;
2072 r->start = 0;
2073 r->end = 0xf;
2074 }
2075}
2076DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA_2,
2077 PCI_DEVICE_ID_TOSHIBA_TC86C001_IDE,
2078 quirk_tc86c001_ide);
2079
2080/*
2081 * PLX PCI 9050 PCI Target bridge controller has an erratum that prevents the
2082 * local configuration registers accessible via BAR0 (memory) or BAR1 (i/o)
2083 * being read correctly if bit 7 of the base address is set.
2084 * The BAR0 or BAR1 region may be disabled (size 0) or enabled (size 128).
2085 * Re-allocate the regions to a 256-byte boundary if necessary.
2086 */
2087static void quirk_plx_pci9050(struct pci_dev *dev)
2088{
2089 unsigned int bar;
2090
2091 /* Fixed in revision 2 (PCI 9052). */
2092 if (dev->revision >= 2)
2093 return;
2094 for (bar = 0; bar <= 1; bar++)
2095 if (pci_resource_len(dev, bar) == 0x80 &&
2096 (pci_resource_start(dev, bar) & 0x80)) {
2097 struct resource *r = &dev->resource[bar];
2098 pci_info(dev, "Re-allocating PLX PCI 9050 BAR %u to length 256 to avoid bit 7 bug\n",
2099 bar);
2100 r->flags |= IORESOURCE_UNSET;
2101 r->start = 0;
2102 r->end = 0xff;
2103 }
2104}
2105DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050,
2106 quirk_plx_pci9050);
2107/*
2108 * The following Meilhaus (vendor ID 0x1402) device IDs (amongst others)
2109 * may be using the PLX PCI 9050: 0x0630, 0x0940, 0x0950, 0x0960, 0x100b,
2110 * 0x1400, 0x140a, 0x140b, 0x14e0, 0x14ea, 0x14eb, 0x1604, 0x1608, 0x160c,
2111 * 0x168f, 0x2000, 0x2600, 0x3000, 0x810a, 0x810b.
2112 *
2113 * Currently, device IDs 0x2000 and 0x2600 are used by the Comedi "me_daq"
2114 * driver.
2115 */
2116DECLARE_PCI_FIXUP_HEADER(0x1402, 0x2000, quirk_plx_pci9050);
2117DECLARE_PCI_FIXUP_HEADER(0x1402, 0x2600, quirk_plx_pci9050);
2118
2119static void quirk_netmos(struct pci_dev *dev)
2120{
2121 unsigned int num_parallel = (dev->subsystem_device & 0xf0) >> 4;
2122 unsigned int num_serial = dev->subsystem_device & 0xf;
2123
2124 /*
2125 * These Netmos parts are multiport serial devices with optional
2126 * parallel ports. Even when parallel ports are present, they
2127 * are identified as class SERIAL, which means the serial driver
2128 * will claim them. To prevent this, mark them as class OTHER.
2129 * These combo devices should be claimed by parport_serial.
2130 *
2131 * The subdevice ID is of the form 0x00PS, where <P> is the number
2132 * of parallel ports and <S> is the number of serial ports.
2133 */
2134 switch (dev->device) {
2135 case PCI_DEVICE_ID_NETMOS_9835:
2136 /* Well, this rule doesn't hold for the following 9835 device */
2137 if (dev->subsystem_vendor == PCI_VENDOR_ID_IBM &&
2138 dev->subsystem_device == 0x0299)
2139 return;
2140 /* else, fall through */
2141 case PCI_DEVICE_ID_NETMOS_9735:
2142 case PCI_DEVICE_ID_NETMOS_9745:
2143 case PCI_DEVICE_ID_NETMOS_9845:
2144 case PCI_DEVICE_ID_NETMOS_9855:
2145 if (num_parallel) {
2146 pci_info(dev, "Netmos %04x (%u parallel, %u serial); changing class SERIAL to OTHER (use parport_serial)\n",
2147 dev->device, num_parallel, num_serial);
2148 dev->class = (PCI_CLASS_COMMUNICATION_OTHER << 8) |
2149 (dev->class & 0xff);
2150 }
2151 }
2152}
2153DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_NETMOS, PCI_ANY_ID,
2154 PCI_CLASS_COMMUNICATION_SERIAL, 8, quirk_netmos);
2155
2156static void quirk_e100_interrupt(struct pci_dev *dev)
2157{
2158 u16 command, pmcsr;
2159 u8 __iomem *csr;
2160 u8 cmd_hi;
2161
2162 switch (dev->device) {
2163 /* PCI IDs taken from drivers/net/e100.c */
2164 case 0x1029:
2165 case 0x1030 ... 0x1034:
2166 case 0x1038 ... 0x103E:
2167 case 0x1050 ... 0x1057:
2168 case 0x1059:
2169 case 0x1064 ... 0x106B:
2170 case 0x1091 ... 0x1095:
2171 case 0x1209:
2172 case 0x1229:
2173 case 0x2449:
2174 case 0x2459:
2175 case 0x245D:
2176 case 0x27DC:
2177 break;
2178 default:
2179 return;
2180 }
2181
2182 /*
2183 * Some firmware hands off the e100 with interrupts enabled,
2184 * which can cause a flood of interrupts if packets are
2185 * received before the driver attaches to the device. So
2186 * disable all e100 interrupts here. The driver will
2187 * re-enable them when it's ready.
2188 */
2189 pci_read_config_word(dev, PCI_COMMAND, &command);
2190
2191 if (!(command & PCI_COMMAND_MEMORY) || !pci_resource_start(dev, 0))
2192 return;
2193
2194 /*
2195 * Check that the device is in the D0 power state. If it's not,
2196 * there is no point to look any further.
2197 */
2198 if (dev->pm_cap) {
2199 pci_read_config_word(dev, dev->pm_cap + PCI_PM_CTRL, &pmcsr);
2200 if ((pmcsr & PCI_PM_CTRL_STATE_MASK) != PCI_D0)
2201 return;
2202 }
2203
2204 /* Convert from PCI bus to resource space. */
2205 csr = ioremap(pci_resource_start(dev, 0), 8);
2206 if (!csr) {
2207 pci_warn(dev, "Can't map e100 registers\n");
2208 return;
2209 }
2210
2211 cmd_hi = readb(csr + 3);
2212 if (cmd_hi == 0) {
2213 pci_warn(dev, "Firmware left e100 interrupts enabled; disabling\n");
2214 writeb(1, csr + 3);
2215 }
2216
2217 iounmap(csr);
2218}
2219DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_INTEL, PCI_ANY_ID,
2220 PCI_CLASS_NETWORK_ETHERNET, 8, quirk_e100_interrupt);
2221
2222/*
2223 * The 82575 and 82598 may experience data corruption issues when transitioning
2224 * out of L0S. To prevent this we need to disable L0S on the PCIe link.
2225 */
2226static void quirk_disable_aspm_l0s(struct pci_dev *dev)
2227{
2228 pci_info(dev, "Disabling L0s\n");
2229 pci_disable_link_state(dev, PCIE_LINK_STATE_L0S);
2230}
2231DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10a7, quirk_disable_aspm_l0s);
2232DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10a9, quirk_disable_aspm_l0s);
2233DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10b6, quirk_disable_aspm_l0s);
2234DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c6, quirk_disable_aspm_l0s);
2235DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c7, quirk_disable_aspm_l0s);
2236DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c8, quirk_disable_aspm_l0s);
2237DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10d6, quirk_disable_aspm_l0s);
2238DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10db, quirk_disable_aspm_l0s);
2239DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10dd, quirk_disable_aspm_l0s);
2240DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10e1, quirk_disable_aspm_l0s);
2241DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10ec, quirk_disable_aspm_l0s);
2242DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f1, quirk_disable_aspm_l0s);
2243DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f4, quirk_disable_aspm_l0s);
2244DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1508, quirk_disable_aspm_l0s);
2245
2246/*
2247 * Some Pericom PCIe-to-PCI bridges in reverse mode need the PCIe Retrain
2248 * Link bit cleared after starting the link retrain process to allow this
2249 * process to finish.
2250 *
2251 * Affected devices: PI7C9X110, PI7C9X111SL, PI7C9X130. See also the
2252 * Pericom Errata Sheet PI7C9X111SLB_errata_rev1.2_102711.pdf.
2253 */
2254static void quirk_enable_clear_retrain_link(struct pci_dev *dev)
2255{
2256 dev->clear_retrain_link = 1;
2257 pci_info(dev, "Enable PCIe Retrain Link quirk\n");
2258}
2259DECLARE_PCI_FIXUP_HEADER(0x12d8, 0xe110, quirk_enable_clear_retrain_link);
2260DECLARE_PCI_FIXUP_HEADER(0x12d8, 0xe111, quirk_enable_clear_retrain_link);
2261DECLARE_PCI_FIXUP_HEADER(0x12d8, 0xe130, quirk_enable_clear_retrain_link);
2262
2263static void fixup_rev1_53c810(struct pci_dev *dev)
2264{
2265 u32 class = dev->class;
2266
2267 /*
2268 * rev 1 ncr53c810 chips don't set the class at all which means
2269 * they don't get their resources remapped. Fix that here.
2270 */
2271 if (class)
2272 return;
2273
2274 dev->class = PCI_CLASS_STORAGE_SCSI << 8;
2275 pci_info(dev, "NCR 53c810 rev 1 PCI class overridden (%#08x -> %#08x)\n",
2276 class, dev->class);
2277}
2278DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NCR, PCI_DEVICE_ID_NCR_53C810, fixup_rev1_53c810);
2279
2280/* Enable 1k I/O space granularity on the Intel P64H2 */
2281static void quirk_p64h2_1k_io(struct pci_dev *dev)
2282{
2283 u16 en1k;
2284
2285 pci_read_config_word(dev, 0x40, &en1k);
2286
2287 if (en1k & 0x200) {
2288 pci_info(dev, "Enable I/O Space to 1KB granularity\n");
2289 dev->io_window_1k = 1;
2290 }
2291}
2292DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1460, quirk_p64h2_1k_io);
2293
2294/*
2295 * Under some circumstances, AER is not linked with extended capabilities.
2296 * Force it to be linked by setting the corresponding control bit in the
2297 * config space.
2298 */
2299static void quirk_nvidia_ck804_pcie_aer_ext_cap(struct pci_dev *dev)
2300{
2301 uint8_t b;
2302
2303 if (pci_read_config_byte(dev, 0xf41, &b) == 0) {
2304 if (!(b & 0x20)) {
2305 pci_write_config_byte(dev, 0xf41, b | 0x20);
2306 pci_info(dev, "Linking AER extended capability\n");
2307 }
2308 }
2309}
2310DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
2311 quirk_nvidia_ck804_pcie_aer_ext_cap);
2312DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
2313 quirk_nvidia_ck804_pcie_aer_ext_cap);
2314
2315static void quirk_via_cx700_pci_parking_caching(struct pci_dev *dev)
2316{
2317 /*
2318 * Disable PCI Bus Parking and PCI Master read caching on CX700
2319 * which causes unspecified timing errors with a VT6212L on the PCI
2320 * bus leading to USB2.0 packet loss.
2321 *
2322 * This quirk is only enabled if a second (on the external PCI bus)
2323 * VT6212L is found -- the CX700 core itself also contains a USB
2324 * host controller with the same PCI ID as the VT6212L.
2325 */
2326
2327 /* Count VT6212L instances */
2328 struct pci_dev *p = pci_get_device(PCI_VENDOR_ID_VIA,
2329 PCI_DEVICE_ID_VIA_8235_USB_2, NULL);
2330 uint8_t b;
2331
2332 /*
2333 * p should contain the first (internal) VT6212L -- see if we have
2334 * an external one by searching again.
2335 */
2336 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235_USB_2, p);
2337 if (!p)
2338 return;
2339 pci_dev_put(p);
2340
2341 if (pci_read_config_byte(dev, 0x76, &b) == 0) {
2342 if (b & 0x40) {
2343 /* Turn off PCI Bus Parking */
2344 pci_write_config_byte(dev, 0x76, b ^ 0x40);
2345
2346 pci_info(dev, "Disabling VIA CX700 PCI parking\n");
2347 }
2348 }
2349
2350 if (pci_read_config_byte(dev, 0x72, &b) == 0) {
2351 if (b != 0) {
2352 /* Turn off PCI Master read caching */
2353 pci_write_config_byte(dev, 0x72, 0x0);
2354
2355 /* Set PCI Master Bus time-out to "1x16 PCLK" */
2356 pci_write_config_byte(dev, 0x75, 0x1);
2357
2358 /* Disable "Read FIFO Timer" */
2359 pci_write_config_byte(dev, 0x77, 0x0);
2360
2361 pci_info(dev, "Disabling VIA CX700 PCI caching\n");
2362 }
2363 }
2364}
2365DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, 0x324e, quirk_via_cx700_pci_parking_caching);
2366
2367static void quirk_brcm_5719_limit_mrrs(struct pci_dev *dev)
2368{
2369 u32 rev;
2370
2371 pci_read_config_dword(dev, 0xf4, &rev);
2372
2373 /* Only CAP the MRRS if the device is a 5719 A0 */
2374 if (rev == 0x05719000) {
2375 int readrq = pcie_get_readrq(dev);
2376 if (readrq > 2048)
2377 pcie_set_readrq(dev, 2048);
2378 }
2379}
2380DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_BROADCOM,
2381 PCI_DEVICE_ID_TIGON3_5719,
2382 quirk_brcm_5719_limit_mrrs);
2383
2384#ifdef CONFIG_PCIE_IPROC_PLATFORM
2385static void quirk_paxc_bridge(struct pci_dev *pdev)
2386{
2387 /*
2388 * The PCI config space is shared with the PAXC root port and the first
2389 * Ethernet device. So, we need to workaround this by telling the PCI
2390 * code that the bridge is not an Ethernet device.
2391 */
2392 if (pdev->hdr_type == PCI_HEADER_TYPE_BRIDGE)
2393 pdev->class = PCI_CLASS_BRIDGE_PCI << 8;
2394
2395 /*
2396 * MPSS is not being set properly (as it is currently 0). This is
2397 * because that area of the PCI config space is hard coded to zero, and
2398 * is not modifiable by firmware. Set this to 2 (e.g., 512 byte MPS)
2399 * so that the MPS can be set to the real max value.
2400 */
2401 pdev->pcie_mpss = 2;
2402}
2403DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_BROADCOM, 0x16cd, quirk_paxc_bridge);
2404DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_BROADCOM, 0x16f0, quirk_paxc_bridge);
2405DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_BROADCOM, 0xd750, quirk_paxc_bridge);
2406DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_BROADCOM, 0xd802, quirk_paxc_bridge);
2407DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_BROADCOM, 0xd804, quirk_paxc_bridge);
2408#endif
2409
2410/*
2411 * Originally in EDAC sources for i82875P: Intel tells BIOS developers to
2412 * hide device 6 which configures the overflow device access containing the
2413 * DRBs - this is where we expose device 6.
2414 * http://www.x86-secret.com/articles/tweak/pat/patsecrets-2.htm
2415 */
2416static void quirk_unhide_mch_dev6(struct pci_dev *dev)
2417{
2418 u8 reg;
2419
2420 if (pci_read_config_byte(dev, 0xF4, ®) == 0 && !(reg & 0x02)) {
2421 pci_info(dev, "Enabling MCH 'Overflow' Device\n");
2422 pci_write_config_byte(dev, 0xF4, reg | 0x02);
2423 }
2424}
2425DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82865_HB,
2426 quirk_unhide_mch_dev6);
2427DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82875_HB,
2428 quirk_unhide_mch_dev6);
2429
2430#ifdef CONFIG_PCI_MSI
2431/*
2432 * Some chipsets do not support MSI. We cannot easily rely on setting
2433 * PCI_BUS_FLAGS_NO_MSI in its bus flags because there are actually some
2434 * other buses controlled by the chipset even if Linux is not aware of it.
2435 * Instead of setting the flag on all buses in the machine, simply disable
2436 * MSI globally.
2437 */
2438static void quirk_disable_all_msi(struct pci_dev *dev)
2439{
2440 pci_no_msi();
2441 pci_warn(dev, "MSI quirk detected; MSI disabled\n");
2442}
2443DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_GCNB_LE, quirk_disable_all_msi);
2444DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS400_200, quirk_disable_all_msi);
2445DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS480, quirk_disable_all_msi);
2446DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3336, quirk_disable_all_msi);
2447DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3351, quirk_disable_all_msi);
2448DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3364, quirk_disable_all_msi);
2449DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8380_0, quirk_disable_all_msi);
2450DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, 0x0761, quirk_disable_all_msi);
2451
2452/* Disable MSI on chipsets that are known to not support it */
2453static void quirk_disable_msi(struct pci_dev *dev)
2454{
2455 if (dev->subordinate) {
2456 pci_warn(dev, "MSI quirk detected; subordinate MSI disabled\n");
2457 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI;
2458 }
2459}
2460DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_msi);
2461DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, 0xa238, quirk_disable_msi);
2462DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x5a3f, quirk_disable_msi);
2463
2464/*
2465 * The APC bridge device in AMD 780 family northbridges has some random
2466 * OEM subsystem ID in its vendor ID register (erratum 18), so instead
2467 * we use the possible vendor/device IDs of the host bridge for the
2468 * declared quirk, and search for the APC bridge by slot number.
2469 */
2470static void quirk_amd_780_apc_msi(struct pci_dev *host_bridge)
2471{
2472 struct pci_dev *apc_bridge;
2473
2474 apc_bridge = pci_get_slot(host_bridge->bus, PCI_DEVFN(1, 0));
2475 if (apc_bridge) {
2476 if (apc_bridge->device == 0x9602)
2477 quirk_disable_msi(apc_bridge);
2478 pci_dev_put(apc_bridge);
2479 }
2480}
2481DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x9600, quirk_amd_780_apc_msi);
2482DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x9601, quirk_amd_780_apc_msi);
2483
2484/*
2485 * Go through the list of HyperTransport capabilities and return 1 if a HT
2486 * MSI capability is found and enabled.
2487 */
2488static int msi_ht_cap_enabled(struct pci_dev *dev)
2489{
2490 int pos, ttl = PCI_FIND_CAP_TTL;
2491
2492 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2493 while (pos && ttl--) {
2494 u8 flags;
2495
2496 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2497 &flags) == 0) {
2498 pci_info(dev, "Found %s HT MSI Mapping\n",
2499 flags & HT_MSI_FLAGS_ENABLE ?
2500 "enabled" : "disabled");
2501 return (flags & HT_MSI_FLAGS_ENABLE) != 0;
2502 }
2503
2504 pos = pci_find_next_ht_capability(dev, pos,
2505 HT_CAPTYPE_MSI_MAPPING);
2506 }
2507 return 0;
2508}
2509
2510/* Check the HyperTransport MSI mapping to know whether MSI is enabled or not */
2511static void quirk_msi_ht_cap(struct pci_dev *dev)
2512{
2513 if (dev->subordinate && !msi_ht_cap_enabled(dev)) {
2514 pci_warn(dev, "MSI quirk detected; subordinate MSI disabled\n");
2515 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI;
2516 }
2517}
2518DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT2000_PCIE,
2519 quirk_msi_ht_cap);
2520
2521/*
2522 * The nVidia CK804 chipset may have 2 HT MSI mappings. MSI is supported
2523 * if the MSI capability is set in any of these mappings.
2524 */
2525static void quirk_nvidia_ck804_msi_ht_cap(struct pci_dev *dev)
2526{
2527 struct pci_dev *pdev;
2528
2529 if (!dev->subordinate)
2530 return;
2531
2532 /*
2533 * Check HT MSI cap on this chipset and the root one. A single one
2534 * having MSI is enough to be sure that MSI is supported.
2535 */
2536 pdev = pci_get_slot(dev->bus, 0);
2537 if (!pdev)
2538 return;
2539 if (!msi_ht_cap_enabled(dev) && !msi_ht_cap_enabled(pdev)) {
2540 pci_warn(dev, "MSI quirk detected; subordinate MSI disabled\n");
2541 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI;
2542 }
2543 pci_dev_put(pdev);
2544}
2545DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
2546 quirk_nvidia_ck804_msi_ht_cap);
2547
2548/* Force enable MSI mapping capability on HT bridges */
2549static void ht_enable_msi_mapping(struct pci_dev *dev)
2550{
2551 int pos, ttl = PCI_FIND_CAP_TTL;
2552
2553 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2554 while (pos && ttl--) {
2555 u8 flags;
2556
2557 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2558 &flags) == 0) {
2559 pci_info(dev, "Enabling HT MSI Mapping\n");
2560
2561 pci_write_config_byte(dev, pos + HT_MSI_FLAGS,
2562 flags | HT_MSI_FLAGS_ENABLE);
2563 }
2564 pos = pci_find_next_ht_capability(dev, pos,
2565 HT_CAPTYPE_MSI_MAPPING);
2566 }
2567}
2568DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SERVERWORKS,
2569 PCI_DEVICE_ID_SERVERWORKS_HT1000_PXB,
2570 ht_enable_msi_mapping);
2571DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE,
2572 ht_enable_msi_mapping);
2573
2574/*
2575 * The P5N32-SLI motherboards from Asus have a problem with MSI
2576 * for the MCP55 NIC. It is not yet determined whether the MSI problem
2577 * also affects other devices. As for now, turn off MSI for this device.
2578 */
2579static void nvenet_msi_disable(struct pci_dev *dev)
2580{
2581 const char *board_name = dmi_get_system_info(DMI_BOARD_NAME);
2582
2583 if (board_name &&
2584 (strstr(board_name, "P5N32-SLI PREMIUM") ||
2585 strstr(board_name, "P5N32-E SLI"))) {
2586 pci_info(dev, "Disabling MSI for MCP55 NIC on P5N32-SLI\n");
2587 dev->no_msi = 1;
2588 }
2589}
2590DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA,
2591 PCI_DEVICE_ID_NVIDIA_NVENET_15,
2592 nvenet_msi_disable);
2593
2594/*
2595 * PCIe spec r4.0 sec 7.7.1.2 and sec 7.7.2.2 say that if MSI/MSI-X is enabled,
2596 * then the device can't use INTx interrupts. Tegra's PCIe root ports don't
2597 * generate MSI interrupts for PME and AER events instead only INTx interrupts
2598 * are generated. Though Tegra's PCIe root ports can generate MSI interrupts
2599 * for other events, since PCIe specificiation doesn't support using a mix of
2600 * INTx and MSI/MSI-X, it is required to disable MSI interrupts to avoid port
2601 * service drivers registering their respective ISRs for MSIs.
2602 */
2603static void pci_quirk_nvidia_tegra_disable_rp_msi(struct pci_dev *dev)
2604{
2605 dev->no_msi = 1;
2606}
2607DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x1ad0,
2608 PCI_CLASS_BRIDGE_PCI, 8,
2609 pci_quirk_nvidia_tegra_disable_rp_msi);
2610DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x1ad1,
2611 PCI_CLASS_BRIDGE_PCI, 8,
2612 pci_quirk_nvidia_tegra_disable_rp_msi);
2613DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x1ad2,
2614 PCI_CLASS_BRIDGE_PCI, 8,
2615 pci_quirk_nvidia_tegra_disable_rp_msi);
2616DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0bf0,
2617 PCI_CLASS_BRIDGE_PCI, 8,
2618 pci_quirk_nvidia_tegra_disable_rp_msi);
2619DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0bf1,
2620 PCI_CLASS_BRIDGE_PCI, 8,
2621 pci_quirk_nvidia_tegra_disable_rp_msi);
2622DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0e1c,
2623 PCI_CLASS_BRIDGE_PCI, 8,
2624 pci_quirk_nvidia_tegra_disable_rp_msi);
2625DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0e1d,
2626 PCI_CLASS_BRIDGE_PCI, 8,
2627 pci_quirk_nvidia_tegra_disable_rp_msi);
2628DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0e12,
2629 PCI_CLASS_BRIDGE_PCI, 8,
2630 pci_quirk_nvidia_tegra_disable_rp_msi);
2631DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0e13,
2632 PCI_CLASS_BRIDGE_PCI, 8,
2633 pci_quirk_nvidia_tegra_disable_rp_msi);
2634DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0fae,
2635 PCI_CLASS_BRIDGE_PCI, 8,
2636 pci_quirk_nvidia_tegra_disable_rp_msi);
2637DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0faf,
2638 PCI_CLASS_BRIDGE_PCI, 8,
2639 pci_quirk_nvidia_tegra_disable_rp_msi);
2640DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x10e5,
2641 PCI_CLASS_BRIDGE_PCI, 8,
2642 pci_quirk_nvidia_tegra_disable_rp_msi);
2643DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x10e6,
2644 PCI_CLASS_BRIDGE_PCI, 8,
2645 pci_quirk_nvidia_tegra_disable_rp_msi);
2646
2647/*
2648 * Some versions of the MCP55 bridge from Nvidia have a legacy IRQ routing
2649 * config register. This register controls the routing of legacy
2650 * interrupts from devices that route through the MCP55. If this register
2651 * is misprogrammed, interrupts are only sent to the BSP, unlike
2652 * conventional systems where the IRQ is broadcast to all online CPUs. Not
2653 * having this register set properly prevents kdump from booting up
2654 * properly, so let's make sure that we have it set correctly.
2655 * Note that this is an undocumented register.
2656 */
2657static void nvbridge_check_legacy_irq_routing(struct pci_dev *dev)
2658{
2659 u32 cfg;
2660
2661 if (!pci_find_capability(dev, PCI_CAP_ID_HT))
2662 return;
2663
2664 pci_read_config_dword(dev, 0x74, &cfg);
2665
2666 if (cfg & ((1 << 2) | (1 << 15))) {
2667 pr_info("Rewriting IRQ routing register on MCP55\n");
2668 cfg &= ~((1 << 2) | (1 << 15));
2669 pci_write_config_dword(dev, 0x74, cfg);
2670 }
2671}
2672DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA,
2673 PCI_DEVICE_ID_NVIDIA_MCP55_BRIDGE_V0,
2674 nvbridge_check_legacy_irq_routing);
2675DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA,
2676 PCI_DEVICE_ID_NVIDIA_MCP55_BRIDGE_V4,
2677 nvbridge_check_legacy_irq_routing);
2678
2679static int ht_check_msi_mapping(struct pci_dev *dev)
2680{
2681 int pos, ttl = PCI_FIND_CAP_TTL;
2682 int found = 0;
2683
2684 /* Check if there is HT MSI cap or enabled on this device */
2685 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2686 while (pos && ttl--) {
2687 u8 flags;
2688
2689 if (found < 1)
2690 found = 1;
2691 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2692 &flags) == 0) {
2693 if (flags & HT_MSI_FLAGS_ENABLE) {
2694 if (found < 2) {
2695 found = 2;
2696 break;
2697 }
2698 }
2699 }
2700 pos = pci_find_next_ht_capability(dev, pos,
2701 HT_CAPTYPE_MSI_MAPPING);
2702 }
2703
2704 return found;
2705}
2706
2707static int host_bridge_with_leaf(struct pci_dev *host_bridge)
2708{
2709 struct pci_dev *dev;
2710 int pos;
2711 int i, dev_no;
2712 int found = 0;
2713
2714 dev_no = host_bridge->devfn >> 3;
2715 for (i = dev_no + 1; i < 0x20; i++) {
2716 dev = pci_get_slot(host_bridge->bus, PCI_DEVFN(i, 0));
2717 if (!dev)
2718 continue;
2719
2720 /* found next host bridge? */
2721 pos = pci_find_ht_capability(dev, HT_CAPTYPE_SLAVE);
2722 if (pos != 0) {
2723 pci_dev_put(dev);
2724 break;
2725 }
2726
2727 if (ht_check_msi_mapping(dev)) {
2728 found = 1;
2729 pci_dev_put(dev);
2730 break;
2731 }
2732 pci_dev_put(dev);
2733 }
2734
2735 return found;
2736}
2737
2738#define PCI_HT_CAP_SLAVE_CTRL0 4 /* link control */
2739#define PCI_HT_CAP_SLAVE_CTRL1 8 /* link control to */
2740
2741static int is_end_of_ht_chain(struct pci_dev *dev)
2742{
2743 int pos, ctrl_off;
2744 int end = 0;
2745 u16 flags, ctrl;
2746
2747 pos = pci_find_ht_capability(dev, HT_CAPTYPE_SLAVE);
2748
2749 if (!pos)
2750 goto out;
2751
2752 pci_read_config_word(dev, pos + PCI_CAP_FLAGS, &flags);
2753
2754 ctrl_off = ((flags >> 10) & 1) ?
2755 PCI_HT_CAP_SLAVE_CTRL0 : PCI_HT_CAP_SLAVE_CTRL1;
2756 pci_read_config_word(dev, pos + ctrl_off, &ctrl);
2757
2758 if (ctrl & (1 << 6))
2759 end = 1;
2760
2761out:
2762 return end;
2763}
2764
2765static void nv_ht_enable_msi_mapping(struct pci_dev *dev)
2766{
2767 struct pci_dev *host_bridge;
2768 int pos;
2769 int i, dev_no;
2770 int found = 0;
2771
2772 dev_no = dev->devfn >> 3;
2773 for (i = dev_no; i >= 0; i--) {
2774 host_bridge = pci_get_slot(dev->bus, PCI_DEVFN(i, 0));
2775 if (!host_bridge)
2776 continue;
2777
2778 pos = pci_find_ht_capability(host_bridge, HT_CAPTYPE_SLAVE);
2779 if (pos != 0) {
2780 found = 1;
2781 break;
2782 }
2783 pci_dev_put(host_bridge);
2784 }
2785
2786 if (!found)
2787 return;
2788
2789 /* don't enable end_device/host_bridge with leaf directly here */
2790 if (host_bridge == dev && is_end_of_ht_chain(host_bridge) &&
2791 host_bridge_with_leaf(host_bridge))
2792 goto out;
2793
2794 /* root did that ! */
2795 if (msi_ht_cap_enabled(host_bridge))
2796 goto out;
2797
2798 ht_enable_msi_mapping(dev);
2799
2800out:
2801 pci_dev_put(host_bridge);
2802}
2803
2804static void ht_disable_msi_mapping(struct pci_dev *dev)
2805{
2806 int pos, ttl = PCI_FIND_CAP_TTL;
2807
2808 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2809 while (pos && ttl--) {
2810 u8 flags;
2811
2812 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2813 &flags) == 0) {
2814 pci_info(dev, "Disabling HT MSI Mapping\n");
2815
2816 pci_write_config_byte(dev, pos + HT_MSI_FLAGS,
2817 flags & ~HT_MSI_FLAGS_ENABLE);
2818 }
2819 pos = pci_find_next_ht_capability(dev, pos,
2820 HT_CAPTYPE_MSI_MAPPING);
2821 }
2822}
2823
2824static void __nv_msi_ht_cap_quirk(struct pci_dev *dev, int all)
2825{
2826 struct pci_dev *host_bridge;
2827 int pos;
2828 int found;
2829
2830 if (!pci_msi_enabled())
2831 return;
2832
2833 /* check if there is HT MSI cap or enabled on this device */
2834 found = ht_check_msi_mapping(dev);
2835
2836 /* no HT MSI CAP */
2837 if (found == 0)
2838 return;
2839
2840 /*
2841 * HT MSI mapping should be disabled on devices that are below
2842 * a non-Hypertransport host bridge. Locate the host bridge...
2843 */
2844 host_bridge = pci_get_domain_bus_and_slot(pci_domain_nr(dev->bus), 0,
2845 PCI_DEVFN(0, 0));
2846 if (host_bridge == NULL) {
2847 pci_warn(dev, "nv_msi_ht_cap_quirk didn't locate host bridge\n");
2848 return;
2849 }
2850
2851 pos = pci_find_ht_capability(host_bridge, HT_CAPTYPE_SLAVE);
2852 if (pos != 0) {
2853 /* Host bridge is to HT */
2854 if (found == 1) {
2855 /* it is not enabled, try to enable it */
2856 if (all)
2857 ht_enable_msi_mapping(dev);
2858 else
2859 nv_ht_enable_msi_mapping(dev);
2860 }
2861 goto out;
2862 }
2863
2864 /* HT MSI is not enabled */
2865 if (found == 1)
2866 goto out;
2867
2868 /* Host bridge is not to HT, disable HT MSI mapping on this device */
2869 ht_disable_msi_mapping(dev);
2870
2871out:
2872 pci_dev_put(host_bridge);
2873}
2874
2875static void nv_msi_ht_cap_quirk_all(struct pci_dev *dev)
2876{
2877 return __nv_msi_ht_cap_quirk(dev, 1);
2878}
2879DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_ANY_ID, nv_msi_ht_cap_quirk_all);
2880DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AL, PCI_ANY_ID, nv_msi_ht_cap_quirk_all);
2881
2882static void nv_msi_ht_cap_quirk_leaf(struct pci_dev *dev)
2883{
2884 return __nv_msi_ht_cap_quirk(dev, 0);
2885}
2886DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, nv_msi_ht_cap_quirk_leaf);
2887DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, nv_msi_ht_cap_quirk_leaf);
2888
2889static void quirk_msi_intx_disable_bug(struct pci_dev *dev)
2890{
2891 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
2892}
2893
2894static void quirk_msi_intx_disable_ati_bug(struct pci_dev *dev)
2895{
2896 struct pci_dev *p;
2897
2898 /*
2899 * SB700 MSI issue will be fixed at HW level from revision A21;
2900 * we need check PCI REVISION ID of SMBus controller to get SB700
2901 * revision.
2902 */
2903 p = pci_get_device(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_SBX00_SMBUS,
2904 NULL);
2905 if (!p)
2906 return;
2907
2908 if ((p->revision < 0x3B) && (p->revision >= 0x30))
2909 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
2910 pci_dev_put(p);
2911}
2912
2913static void quirk_msi_intx_disable_qca_bug(struct pci_dev *dev)
2914{
2915 /* AR816X/AR817X/E210X MSI is fixed at HW level from revision 0x18 */
2916 if (dev->revision < 0x18) {
2917 pci_info(dev, "set MSI_INTX_DISABLE_BUG flag\n");
2918 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
2919 }
2920}
2921DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2922 PCI_DEVICE_ID_TIGON3_5780,
2923 quirk_msi_intx_disable_bug);
2924DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2925 PCI_DEVICE_ID_TIGON3_5780S,
2926 quirk_msi_intx_disable_bug);
2927DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2928 PCI_DEVICE_ID_TIGON3_5714,
2929 quirk_msi_intx_disable_bug);
2930DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2931 PCI_DEVICE_ID_TIGON3_5714S,
2932 quirk_msi_intx_disable_bug);
2933DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2934 PCI_DEVICE_ID_TIGON3_5715,
2935 quirk_msi_intx_disable_bug);
2936DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2937 PCI_DEVICE_ID_TIGON3_5715S,
2938 quirk_msi_intx_disable_bug);
2939
2940DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4390,
2941 quirk_msi_intx_disable_ati_bug);
2942DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4391,
2943 quirk_msi_intx_disable_ati_bug);
2944DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4392,
2945 quirk_msi_intx_disable_ati_bug);
2946DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4393,
2947 quirk_msi_intx_disable_ati_bug);
2948DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4394,
2949 quirk_msi_intx_disable_ati_bug);
2950
2951DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4373,
2952 quirk_msi_intx_disable_bug);
2953DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4374,
2954 quirk_msi_intx_disable_bug);
2955DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4375,
2956 quirk_msi_intx_disable_bug);
2957
2958DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1062,
2959 quirk_msi_intx_disable_bug);
2960DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1063,
2961 quirk_msi_intx_disable_bug);
2962DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x2060,
2963 quirk_msi_intx_disable_bug);
2964DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x2062,
2965 quirk_msi_intx_disable_bug);
2966DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1073,
2967 quirk_msi_intx_disable_bug);
2968DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1083,
2969 quirk_msi_intx_disable_bug);
2970DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1090,
2971 quirk_msi_intx_disable_qca_bug);
2972DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1091,
2973 quirk_msi_intx_disable_qca_bug);
2974DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x10a0,
2975 quirk_msi_intx_disable_qca_bug);
2976DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x10a1,
2977 quirk_msi_intx_disable_qca_bug);
2978DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0xe091,
2979 quirk_msi_intx_disable_qca_bug);
2980
2981/*
2982 * Amazon's Annapurna Labs 1c36:0031 Root Ports don't support MSI-X, so it
2983 * should be disabled on platforms where the device (mistakenly) advertises it.
2984 *
2985 * Notice that this quirk also disables MSI (which may work, but hasn't been
2986 * tested), since currently there is no standard way to disable only MSI-X.
2987 *
2988 * The 0031 device id is reused for other non Root Port device types,
2989 * therefore the quirk is registered for the PCI_CLASS_BRIDGE_PCI class.
2990 */
2991static void quirk_al_msi_disable(struct pci_dev *dev)
2992{
2993 dev->no_msi = 1;
2994 pci_warn(dev, "Disabling MSI/MSI-X\n");
2995}
2996DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_AMAZON_ANNAPURNA_LABS, 0x0031,
2997 PCI_CLASS_BRIDGE_PCI, 8, quirk_al_msi_disable);
2998#endif /* CONFIG_PCI_MSI */
2999
3000/*
3001 * Allow manual resource allocation for PCI hotplug bridges via
3002 * pci=hpmemsize=nnM and pci=hpiosize=nnM parameters. For some PCI-PCI
3003 * hotplug bridges, like PLX 6254 (former HINT HB6), kernel fails to
3004 * allocate resources when hotplug device is inserted and PCI bus is
3005 * rescanned.
3006 */
3007static void quirk_hotplug_bridge(struct pci_dev *dev)
3008{
3009 dev->is_hotplug_bridge = 1;
3010}
3011DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_HINT, 0x0020, quirk_hotplug_bridge);
3012
3013/*
3014 * This is a quirk for the Ricoh MMC controller found as a part of some
3015 * multifunction chips.
3016 *
3017 * This is very similar and based on the ricoh_mmc driver written by
3018 * Philip Langdale. Thank you for these magic sequences.
3019 *
3020 * These chips implement the four main memory card controllers (SD, MMC,
3021 * MS, xD) and one or both of CardBus or FireWire.
3022 *
3023 * It happens that they implement SD and MMC support as separate
3024 * controllers (and PCI functions). The Linux SDHCI driver supports MMC
3025 * cards but the chip detects MMC cards in hardware and directs them to the
3026 * MMC controller - so the SDHCI driver never sees them.
3027 *
3028 * To get around this, we must disable the useless MMC controller. At that
3029 * point, the SDHCI controller will start seeing them. It seems to be the
3030 * case that the relevant PCI registers to deactivate the MMC controller
3031 * live on PCI function 0, which might be the CardBus controller or the
3032 * FireWire controller, depending on the particular chip in question
3033 *
3034 * This has to be done early, because as soon as we disable the MMC controller
3035 * other PCI functions shift up one level, e.g. function #2 becomes function
3036 * #1, and this will confuse the PCI core.
3037 */
3038#ifdef CONFIG_MMC_RICOH_MMC
3039static void ricoh_mmc_fixup_rl5c476(struct pci_dev *dev)
3040{
3041 u8 write_enable;
3042 u8 write_target;
3043 u8 disable;
3044
3045 /*
3046 * Disable via CardBus interface
3047 *
3048 * This must be done via function #0
3049 */
3050 if (PCI_FUNC(dev->devfn))
3051 return;
3052
3053 pci_read_config_byte(dev, 0xB7, &disable);
3054 if (disable & 0x02)
3055 return;
3056
3057 pci_read_config_byte(dev, 0x8E, &write_enable);
3058 pci_write_config_byte(dev, 0x8E, 0xAA);
3059 pci_read_config_byte(dev, 0x8D, &write_target);
3060 pci_write_config_byte(dev, 0x8D, 0xB7);
3061 pci_write_config_byte(dev, 0xB7, disable | 0x02);
3062 pci_write_config_byte(dev, 0x8E, write_enable);
3063 pci_write_config_byte(dev, 0x8D, write_target);
3064
3065 pci_notice(dev, "proprietary Ricoh MMC controller disabled (via CardBus function)\n");
3066 pci_notice(dev, "MMC cards are now supported by standard SDHCI controller\n");
3067}
3068DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, ricoh_mmc_fixup_rl5c476);
3069DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, ricoh_mmc_fixup_rl5c476);
3070
3071static void ricoh_mmc_fixup_r5c832(struct pci_dev *dev)
3072{
3073 u8 write_enable;
3074 u8 disable;
3075
3076 /*
3077 * Disable via FireWire interface
3078 *
3079 * This must be done via function #0
3080 */
3081 if (PCI_FUNC(dev->devfn))
3082 return;
3083 /*
3084 * RICOH 0xe822 and 0xe823 SD/MMC card readers fail to recognize
3085 * certain types of SD/MMC cards. Lowering the SD base clock
3086 * frequency from 200Mhz to 50Mhz fixes this issue.
3087 *
3088 * 0x150 - SD2.0 mode enable for changing base clock
3089 * frequency to 50Mhz
3090 * 0xe1 - Base clock frequency
3091 * 0x32 - 50Mhz new clock frequency
3092 * 0xf9 - Key register for 0x150
3093 * 0xfc - key register for 0xe1
3094 */
3095 if (dev->device == PCI_DEVICE_ID_RICOH_R5CE822 ||
3096 dev->device == PCI_DEVICE_ID_RICOH_R5CE823) {
3097 pci_write_config_byte(dev, 0xf9, 0xfc);
3098 pci_write_config_byte(dev, 0x150, 0x10);
3099 pci_write_config_byte(dev, 0xf9, 0x00);
3100 pci_write_config_byte(dev, 0xfc, 0x01);
3101 pci_write_config_byte(dev, 0xe1, 0x32);
3102 pci_write_config_byte(dev, 0xfc, 0x00);
3103
3104 pci_notice(dev, "MMC controller base frequency changed to 50Mhz.\n");
3105 }
3106
3107 pci_read_config_byte(dev, 0xCB, &disable);
3108
3109 if (disable & 0x02)
3110 return;
3111
3112 pci_read_config_byte(dev, 0xCA, &write_enable);
3113 pci_write_config_byte(dev, 0xCA, 0x57);
3114 pci_write_config_byte(dev, 0xCB, disable | 0x02);
3115 pci_write_config_byte(dev, 0xCA, write_enable);
3116
3117 pci_notice(dev, "proprietary Ricoh MMC controller disabled (via FireWire function)\n");
3118 pci_notice(dev, "MMC cards are now supported by standard SDHCI controller\n");
3119
3120}
3121DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5C832, ricoh_mmc_fixup_r5c832);
3122DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5C832, ricoh_mmc_fixup_r5c832);
3123DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE822, ricoh_mmc_fixup_r5c832);
3124DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE822, ricoh_mmc_fixup_r5c832);
3125DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE823, ricoh_mmc_fixup_r5c832);
3126DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE823, ricoh_mmc_fixup_r5c832);
3127#endif /*CONFIG_MMC_RICOH_MMC*/
3128
3129#ifdef CONFIG_DMAR_TABLE
3130#define VTUNCERRMSK_REG 0x1ac
3131#define VTD_MSK_SPEC_ERRORS (1 << 31)
3132/*
3133 * This is a quirk for masking VT-d spec-defined errors to platform error
3134 * handling logic. Without this, platforms using Intel 7500, 5500 chipsets
3135 * (and the derivative chipsets like X58 etc) seem to generate NMI/SMI (based
3136 * on the RAS config settings of the platform) when a VT-d fault happens.
3137 * The resulting SMI caused the system to hang.
3138 *
3139 * VT-d spec-related errors are already handled by the VT-d OS code, so no
3140 * need to report the same error through other channels.
3141 */
3142static void vtd_mask_spec_errors(struct pci_dev *dev)
3143{
3144 u32 word;
3145
3146 pci_read_config_dword(dev, VTUNCERRMSK_REG, &word);
3147 pci_write_config_dword(dev, VTUNCERRMSK_REG, word | VTD_MSK_SPEC_ERRORS);
3148}
3149DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x342e, vtd_mask_spec_errors);
3150DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x3c28, vtd_mask_spec_errors);
3151#endif
3152
3153static void fixup_ti816x_class(struct pci_dev *dev)
3154{
3155 u32 class = dev->class;
3156
3157 /* TI 816x devices do not have class code set when in PCIe boot mode */
3158 dev->class = PCI_CLASS_MULTIMEDIA_VIDEO << 8;
3159 pci_info(dev, "PCI class overridden (%#08x -> %#08x)\n",
3160 class, dev->class);
3161}
3162DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_TI, 0xb800,
3163 PCI_CLASS_NOT_DEFINED, 8, fixup_ti816x_class);
3164
3165/*
3166 * Some PCIe devices do not work reliably with the claimed maximum
3167 * payload size supported.
3168 */
3169static void fixup_mpss_256(struct pci_dev *dev)
3170{
3171 dev->pcie_mpss = 1; /* 256 bytes */
3172}
3173DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SOLARFLARE,
3174 PCI_DEVICE_ID_SOLARFLARE_SFC4000A_0, fixup_mpss_256);
3175DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SOLARFLARE,
3176 PCI_DEVICE_ID_SOLARFLARE_SFC4000A_1, fixup_mpss_256);
3177DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SOLARFLARE,
3178 PCI_DEVICE_ID_SOLARFLARE_SFC4000B, fixup_mpss_256);
3179
3180/*
3181 * Intel 5000 and 5100 Memory controllers have an erratum with read completion
3182 * coalescing (which is enabled by default on some BIOSes) and MPS of 256B.
3183 * Since there is no way of knowing what the PCIe MPS on each fabric will be
3184 * until all of the devices are discovered and buses walked, read completion
3185 * coalescing must be disabled. Unfortunately, it cannot be re-enabled because
3186 * it is possible to hotplug a device with MPS of 256B.
3187 */
3188static void quirk_intel_mc_errata(struct pci_dev *dev)
3189{
3190 int err;
3191 u16 rcc;
3192
3193 if (pcie_bus_config == PCIE_BUS_TUNE_OFF ||
3194 pcie_bus_config == PCIE_BUS_DEFAULT)
3195 return;
3196
3197 /*
3198 * Intel erratum specifies bits to change but does not say what
3199 * they are. Keeping them magical until such time as the registers
3200 * and values can be explained.
3201 */
3202 err = pci_read_config_word(dev, 0x48, &rcc);
3203 if (err) {
3204 pci_err(dev, "Error attempting to read the read completion coalescing register\n");
3205 return;
3206 }
3207
3208 if (!(rcc & (1 << 10)))
3209 return;
3210
3211 rcc &= ~(1 << 10);
3212
3213 err = pci_write_config_word(dev, 0x48, rcc);
3214 if (err) {
3215 pci_err(dev, "Error attempting to write the read completion coalescing register\n");
3216 return;
3217 }
3218
3219 pr_info_once("Read completion coalescing disabled due to hardware erratum relating to 256B MPS\n");
3220}
3221/* Intel 5000 series memory controllers and ports 2-7 */
3222DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25c0, quirk_intel_mc_errata);
3223DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25d0, quirk_intel_mc_errata);
3224DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25d4, quirk_intel_mc_errata);
3225DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25d8, quirk_intel_mc_errata);
3226DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e2, quirk_intel_mc_errata);
3227DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e3, quirk_intel_mc_errata);
3228DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e4, quirk_intel_mc_errata);
3229DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e5, quirk_intel_mc_errata);
3230DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e6, quirk_intel_mc_errata);
3231DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e7, quirk_intel_mc_errata);
3232DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25f7, quirk_intel_mc_errata);
3233DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25f8, quirk_intel_mc_errata);
3234DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25f9, quirk_intel_mc_errata);
3235DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25fa, quirk_intel_mc_errata);
3236/* Intel 5100 series memory controllers and ports 2-7 */
3237DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65c0, quirk_intel_mc_errata);
3238DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e2, quirk_intel_mc_errata);
3239DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e3, quirk_intel_mc_errata);
3240DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e4, quirk_intel_mc_errata);
3241DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e5, quirk_intel_mc_errata);
3242DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e6, quirk_intel_mc_errata);
3243DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e7, quirk_intel_mc_errata);
3244DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65f7, quirk_intel_mc_errata);
3245DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65f8, quirk_intel_mc_errata);
3246DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65f9, quirk_intel_mc_errata);
3247DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65fa, quirk_intel_mc_errata);
3248
3249/*
3250 * Ivytown NTB BAR sizes are misreported by the hardware due to an erratum.
3251 * To work around this, query the size it should be configured to by the
3252 * device and modify the resource end to correspond to this new size.
3253 */
3254static void quirk_intel_ntb(struct pci_dev *dev)
3255{
3256 int rc;
3257 u8 val;
3258
3259 rc = pci_read_config_byte(dev, 0x00D0, &val);
3260 if (rc)
3261 return;
3262
3263 dev->resource[2].end = dev->resource[2].start + ((u64) 1 << val) - 1;
3264
3265 rc = pci_read_config_byte(dev, 0x00D1, &val);
3266 if (rc)
3267 return;
3268
3269 dev->resource[4].end = dev->resource[4].start + ((u64) 1 << val) - 1;
3270}
3271DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x0e08, quirk_intel_ntb);
3272DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x0e0d, quirk_intel_ntb);
3273
3274/*
3275 * Some BIOS implementations leave the Intel GPU interrupts enabled, even
3276 * though no one is handling them (e.g., if the i915 driver is never
3277 * loaded). Additionally the interrupt destination is not set up properly
3278 * and the interrupt ends up -somewhere-.
3279 *
3280 * These spurious interrupts are "sticky" and the kernel disables the
3281 * (shared) interrupt line after 100,000+ generated interrupts.
3282 *
3283 * Fix it by disabling the still enabled interrupts. This resolves crashes
3284 * often seen on monitor unplug.
3285 */
3286#define I915_DEIER_REG 0x4400c
3287static void disable_igfx_irq(struct pci_dev *dev)
3288{
3289 void __iomem *regs = pci_iomap(dev, 0, 0);
3290 if (regs == NULL) {
3291 pci_warn(dev, "igfx quirk: Can't iomap PCI device\n");
3292 return;
3293 }
3294
3295 /* Check if any interrupt line is still enabled */
3296 if (readl(regs + I915_DEIER_REG) != 0) {
3297 pci_warn(dev, "BIOS left Intel GPU interrupts enabled; disabling\n");
3298
3299 writel(0, regs + I915_DEIER_REG);
3300 }
3301
3302 pci_iounmap(dev, regs);
3303}
3304DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0042, disable_igfx_irq);
3305DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0046, disable_igfx_irq);
3306DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x004a, disable_igfx_irq);
3307DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0102, disable_igfx_irq);
3308DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0106, disable_igfx_irq);
3309DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x010a, disable_igfx_irq);
3310DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0152, disable_igfx_irq);
3311
3312/*
3313 * PCI devices which are on Intel chips can skip the 10ms delay
3314 * before entering D3 mode.
3315 */
3316static void quirk_remove_d3_delay(struct pci_dev *dev)
3317{
3318 dev->d3_delay = 0;
3319}
3320/* C600 Series devices do not need 10ms d3_delay */
3321DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0412, quirk_remove_d3_delay);
3322DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0c00, quirk_remove_d3_delay);
3323DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0c0c, quirk_remove_d3_delay);
3324/* Lynxpoint-H PCH devices do not need 10ms d3_delay */
3325DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c02, quirk_remove_d3_delay);
3326DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c18, quirk_remove_d3_delay);
3327DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c1c, quirk_remove_d3_delay);
3328DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c20, quirk_remove_d3_delay);
3329DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c22, quirk_remove_d3_delay);
3330DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c26, quirk_remove_d3_delay);
3331DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c2d, quirk_remove_d3_delay);
3332DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c31, quirk_remove_d3_delay);
3333DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c3a, quirk_remove_d3_delay);
3334DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c3d, quirk_remove_d3_delay);
3335DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c4e, quirk_remove_d3_delay);
3336/* Intel Cherrytrail devices do not need 10ms d3_delay */
3337DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2280, quirk_remove_d3_delay);
3338DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2298, quirk_remove_d3_delay);
3339DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x229c, quirk_remove_d3_delay);
3340DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b0, quirk_remove_d3_delay);
3341DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b5, quirk_remove_d3_delay);
3342DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b7, quirk_remove_d3_delay);
3343DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b8, quirk_remove_d3_delay);
3344DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22d8, quirk_remove_d3_delay);
3345DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22dc, quirk_remove_d3_delay);
3346
3347/*
3348 * Some devices may pass our check in pci_intx_mask_supported() if
3349 * PCI_COMMAND_INTX_DISABLE works though they actually do not properly
3350 * support this feature.
3351 */
3352static void quirk_broken_intx_masking(struct pci_dev *dev)
3353{
3354 dev->broken_intx_masking = 1;
3355}
3356DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x0030,
3357 quirk_broken_intx_masking);
3358DECLARE_PCI_FIXUP_FINAL(0x1814, 0x0601, /* Ralink RT2800 802.11n PCI */
3359 quirk_broken_intx_masking);
3360DECLARE_PCI_FIXUP_FINAL(0x1b7c, 0x0004, /* Ceton InfiniTV4 */
3361 quirk_broken_intx_masking);
3362
3363/*
3364 * Realtek RTL8169 PCI Gigabit Ethernet Controller (rev 10)
3365 * Subsystem: Realtek RTL8169/8110 Family PCI Gigabit Ethernet NIC
3366 *
3367 * RTL8110SC - Fails under PCI device assignment using DisINTx masking.
3368 */
3369DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_REALTEK, 0x8169,
3370 quirk_broken_intx_masking);
3371
3372/*
3373 * Intel i40e (XL710/X710) 10/20/40GbE NICs all have broken INTx masking,
3374 * DisINTx can be set but the interrupt status bit is non-functional.
3375 */
3376DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1572, quirk_broken_intx_masking);
3377DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1574, quirk_broken_intx_masking);
3378DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1580, quirk_broken_intx_masking);
3379DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1581, quirk_broken_intx_masking);
3380DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1583, quirk_broken_intx_masking);
3381DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1584, quirk_broken_intx_masking);
3382DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1585, quirk_broken_intx_masking);
3383DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1586, quirk_broken_intx_masking);
3384DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1587, quirk_broken_intx_masking);
3385DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1588, quirk_broken_intx_masking);
3386DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1589, quirk_broken_intx_masking);
3387DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x158a, quirk_broken_intx_masking);
3388DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x158b, quirk_broken_intx_masking);
3389DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x37d0, quirk_broken_intx_masking);
3390DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x37d1, quirk_broken_intx_masking);
3391DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x37d2, quirk_broken_intx_masking);
3392
3393static u16 mellanox_broken_intx_devs[] = {
3394 PCI_DEVICE_ID_MELLANOX_HERMON_SDR,
3395 PCI_DEVICE_ID_MELLANOX_HERMON_DDR,
3396 PCI_DEVICE_ID_MELLANOX_HERMON_QDR,
3397 PCI_DEVICE_ID_MELLANOX_HERMON_DDR_GEN2,
3398 PCI_DEVICE_ID_MELLANOX_HERMON_QDR_GEN2,
3399 PCI_DEVICE_ID_MELLANOX_HERMON_EN,
3400 PCI_DEVICE_ID_MELLANOX_HERMON_EN_GEN2,
3401 PCI_DEVICE_ID_MELLANOX_CONNECTX_EN,
3402 PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_T_GEN2,
3403 PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_GEN2,
3404 PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_5_GEN2,
3405 PCI_DEVICE_ID_MELLANOX_CONNECTX2,
3406 PCI_DEVICE_ID_MELLANOX_CONNECTX3,
3407 PCI_DEVICE_ID_MELLANOX_CONNECTX3_PRO,
3408};
3409
3410#define CONNECTX_4_CURR_MAX_MINOR 99
3411#define CONNECTX_4_INTX_SUPPORT_MINOR 14
3412
3413/*
3414 * Check ConnectX-4/LX FW version to see if it supports legacy interrupts.
3415 * If so, don't mark it as broken.
3416 * FW minor > 99 means older FW version format and no INTx masking support.
3417 * FW minor < 14 means new FW version format and no INTx masking support.
3418 */
3419static void mellanox_check_broken_intx_masking(struct pci_dev *pdev)
3420{
3421 __be32 __iomem *fw_ver;
3422 u16 fw_major;
3423 u16 fw_minor;
3424 u16 fw_subminor;
3425 u32 fw_maj_min;
3426 u32 fw_sub_min;
3427 int i;
3428
3429 for (i = 0; i < ARRAY_SIZE(mellanox_broken_intx_devs); i++) {
3430 if (pdev->device == mellanox_broken_intx_devs[i]) {
3431 pdev->broken_intx_masking = 1;
3432 return;
3433 }
3434 }
3435
3436 /*
3437 * Getting here means Connect-IB cards and up. Connect-IB has no INTx
3438 * support so shouldn't be checked further
3439 */
3440 if (pdev->device == PCI_DEVICE_ID_MELLANOX_CONNECTIB)
3441 return;
3442
3443 if (pdev->device != PCI_DEVICE_ID_MELLANOX_CONNECTX4 &&
3444 pdev->device != PCI_DEVICE_ID_MELLANOX_CONNECTX4_LX)
3445 return;
3446
3447 /* For ConnectX-4 and ConnectX-4LX, need to check FW support */
3448 if (pci_enable_device_mem(pdev)) {
3449 pci_warn(pdev, "Can't enable device memory\n");
3450 return;
3451 }
3452
3453 fw_ver = ioremap(pci_resource_start(pdev, 0), 4);
3454 if (!fw_ver) {
3455 pci_warn(pdev, "Can't map ConnectX-4 initialization segment\n");
3456 goto out;
3457 }
3458
3459 /* Reading from resource space should be 32b aligned */
3460 fw_maj_min = ioread32be(fw_ver);
3461 fw_sub_min = ioread32be(fw_ver + 1);
3462 fw_major = fw_maj_min & 0xffff;
3463 fw_minor = fw_maj_min >> 16;
3464 fw_subminor = fw_sub_min & 0xffff;
3465 if (fw_minor > CONNECTX_4_CURR_MAX_MINOR ||
3466 fw_minor < CONNECTX_4_INTX_SUPPORT_MINOR) {
3467 pci_warn(pdev, "ConnectX-4: FW %u.%u.%u doesn't support INTx masking, disabling. Please upgrade FW to %d.14.1100 and up for INTx support\n",
3468 fw_major, fw_minor, fw_subminor, pdev->device ==
3469 PCI_DEVICE_ID_MELLANOX_CONNECTX4 ? 12 : 14);
3470 pdev->broken_intx_masking = 1;
3471 }
3472
3473 iounmap(fw_ver);
3474
3475out:
3476 pci_disable_device(pdev);
3477}
3478DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX, PCI_ANY_ID,
3479 mellanox_check_broken_intx_masking);
3480
3481static void quirk_no_bus_reset(struct pci_dev *dev)
3482{
3483 dev->dev_flags |= PCI_DEV_FLAGS_NO_BUS_RESET;
3484}
3485
3486/*
3487 * Some Atheros AR9xxx and QCA988x chips do not behave after a bus reset.
3488 * The device will throw a Link Down error on AER-capable systems and
3489 * regardless of AER, config space of the device is never accessible again
3490 * and typically causes the system to hang or reset when access is attempted.
3491 * http://www.spinics.net/lists/linux-pci/msg34797.html
3492 */
3493DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0030, quirk_no_bus_reset);
3494DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0032, quirk_no_bus_reset);
3495DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x003c, quirk_no_bus_reset);
3496DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0033, quirk_no_bus_reset);
3497DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0034, quirk_no_bus_reset);
3498
3499/*
3500 * Root port on some Cavium CN8xxx chips do not successfully complete a bus
3501 * reset when used with certain child devices. After the reset, config
3502 * accesses to the child may fail.
3503 */
3504DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_CAVIUM, 0xa100, quirk_no_bus_reset);
3505
3506static void quirk_no_pm_reset(struct pci_dev *dev)
3507{
3508 /*
3509 * We can't do a bus reset on root bus devices, but an ineffective
3510 * PM reset may be better than nothing.
3511 */
3512 if (!pci_is_root_bus(dev->bus))
3513 dev->dev_flags |= PCI_DEV_FLAGS_NO_PM_RESET;
3514}
3515
3516/*
3517 * Some AMD/ATI GPUS (HD8570 - Oland) report that a D3hot->D0 transition
3518 * causes a reset (i.e., they advertise NoSoftRst-). This transition seems
3519 * to have no effect on the device: it retains the framebuffer contents and
3520 * monitor sync. Advertising this support makes other layers, like VFIO,
3521 * assume pci_reset_function() is viable for this device. Mark it as
3522 * unavailable to skip it when testing reset methods.
3523 */
3524DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_ATI, PCI_ANY_ID,
3525 PCI_CLASS_DISPLAY_VGA, 8, quirk_no_pm_reset);
3526
3527/*
3528 * Thunderbolt controllers with broken MSI hotplug signaling:
3529 * Entire 1st generation (Light Ridge, Eagle Ridge, Light Peak) and part
3530 * of the 2nd generation (Cactus Ridge 4C up to revision 1, Port Ridge).
3531 */
3532static void quirk_thunderbolt_hotplug_msi(struct pci_dev *pdev)
3533{
3534 if (pdev->is_hotplug_bridge &&
3535 (pdev->device != PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C ||
3536 pdev->revision <= 1))
3537 pdev->no_msi = 1;
3538}
3539DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_LIGHT_RIDGE,
3540 quirk_thunderbolt_hotplug_msi);
3541DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_EAGLE_RIDGE,
3542 quirk_thunderbolt_hotplug_msi);
3543DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_LIGHT_PEAK,
3544 quirk_thunderbolt_hotplug_msi);
3545DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C,
3546 quirk_thunderbolt_hotplug_msi);
3547DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PORT_RIDGE,
3548 quirk_thunderbolt_hotplug_msi);
3549
3550#ifdef CONFIG_ACPI
3551/*
3552 * Apple: Shutdown Cactus Ridge Thunderbolt controller.
3553 *
3554 * On Apple hardware the Cactus Ridge Thunderbolt controller needs to be
3555 * shutdown before suspend. Otherwise the native host interface (NHI) will not
3556 * be present after resume if a device was plugged in before suspend.
3557 *
3558 * The Thunderbolt controller consists of a PCIe switch with downstream
3559 * bridges leading to the NHI and to the tunnel PCI bridges.
3560 *
3561 * This quirk cuts power to the whole chip. Therefore we have to apply it
3562 * during suspend_noirq of the upstream bridge.
3563 *
3564 * Power is automagically restored before resume. No action is needed.
3565 */
3566static void quirk_apple_poweroff_thunderbolt(struct pci_dev *dev)
3567{
3568 acpi_handle bridge, SXIO, SXFP, SXLV;
3569
3570 if (!x86_apple_machine)
3571 return;
3572 if (pci_pcie_type(dev) != PCI_EXP_TYPE_UPSTREAM)
3573 return;
3574 bridge = ACPI_HANDLE(&dev->dev);
3575 if (!bridge)
3576 return;
3577
3578 /*
3579 * SXIO and SXLV are present only on machines requiring this quirk.
3580 * Thunderbolt bridges in external devices might have the same
3581 * device ID as those on the host, but they will not have the
3582 * associated ACPI methods. This implicitly checks that we are at
3583 * the right bridge.
3584 */
3585 if (ACPI_FAILURE(acpi_get_handle(bridge, "DSB0.NHI0.SXIO", &SXIO))
3586 || ACPI_FAILURE(acpi_get_handle(bridge, "DSB0.NHI0.SXFP", &SXFP))
3587 || ACPI_FAILURE(acpi_get_handle(bridge, "DSB0.NHI0.SXLV", &SXLV)))
3588 return;
3589 pci_info(dev, "quirk: cutting power to Thunderbolt controller...\n");
3590
3591 /* magic sequence */
3592 acpi_execute_simple_method(SXIO, NULL, 1);
3593 acpi_execute_simple_method(SXFP, NULL, 0);
3594 msleep(300);
3595 acpi_execute_simple_method(SXLV, NULL, 0);
3596 acpi_execute_simple_method(SXIO, NULL, 0);
3597 acpi_execute_simple_method(SXLV, NULL, 0);
3598}
3599DECLARE_PCI_FIXUP_SUSPEND_LATE(PCI_VENDOR_ID_INTEL,
3600 PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C,
3601 quirk_apple_poweroff_thunderbolt);
3602
3603/*
3604 * Apple: Wait for the Thunderbolt controller to reestablish PCI tunnels
3605 *
3606 * During suspend the Thunderbolt controller is reset and all PCI
3607 * tunnels are lost. The NHI driver will try to reestablish all tunnels
3608 * during resume. We have to manually wait for the NHI since there is
3609 * no parent child relationship between the NHI and the tunneled
3610 * bridges.
3611 */
3612static void quirk_apple_wait_for_thunderbolt(struct pci_dev *dev)
3613{
3614 struct pci_dev *sibling = NULL;
3615 struct pci_dev *nhi = NULL;
3616
3617 if (!x86_apple_machine)
3618 return;
3619 if (pci_pcie_type(dev) != PCI_EXP_TYPE_DOWNSTREAM)
3620 return;
3621
3622 /*
3623 * Find the NHI and confirm that we are a bridge on the Thunderbolt
3624 * host controller and not on a Thunderbolt endpoint.
3625 */
3626 sibling = pci_get_slot(dev->bus, 0x0);
3627 if (sibling == dev)
3628 goto out; /* we are the downstream bridge to the NHI */
3629 if (!sibling || !sibling->subordinate)
3630 goto out;
3631 nhi = pci_get_slot(sibling->subordinate, 0x0);
3632 if (!nhi)
3633 goto out;
3634 if (nhi->vendor != PCI_VENDOR_ID_INTEL
3635 || (nhi->device != PCI_DEVICE_ID_INTEL_LIGHT_RIDGE &&
3636 nhi->device != PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C &&
3637 nhi->device != PCI_DEVICE_ID_INTEL_FALCON_RIDGE_2C_NHI &&
3638 nhi->device != PCI_DEVICE_ID_INTEL_FALCON_RIDGE_4C_NHI)
3639 || nhi->class != PCI_CLASS_SYSTEM_OTHER << 8)
3640 goto out;
3641 pci_info(dev, "quirk: waiting for Thunderbolt to reestablish PCI tunnels...\n");
3642 device_pm_wait_for_dev(&dev->dev, &nhi->dev);
3643out:
3644 pci_dev_put(nhi);
3645 pci_dev_put(sibling);
3646}
3647DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL,
3648 PCI_DEVICE_ID_INTEL_LIGHT_RIDGE,
3649 quirk_apple_wait_for_thunderbolt);
3650DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL,
3651 PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C,
3652 quirk_apple_wait_for_thunderbolt);
3653DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL,
3654 PCI_DEVICE_ID_INTEL_FALCON_RIDGE_2C_BRIDGE,
3655 quirk_apple_wait_for_thunderbolt);
3656DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL,
3657 PCI_DEVICE_ID_INTEL_FALCON_RIDGE_4C_BRIDGE,
3658 quirk_apple_wait_for_thunderbolt);
3659#endif
3660
3661/*
3662 * Following are device-specific reset methods which can be used to
3663 * reset a single function if other methods (e.g. FLR, PM D0->D3) are
3664 * not available.
3665 */
3666static int reset_intel_82599_sfp_virtfn(struct pci_dev *dev, int probe)
3667{
3668 /*
3669 * http://www.intel.com/content/dam/doc/datasheet/82599-10-gbe-controller-datasheet.pdf
3670 *
3671 * The 82599 supports FLR on VFs, but FLR support is reported only
3672 * in the PF DEVCAP (sec 9.3.10.4), not in the VF DEVCAP (sec 9.5).
3673 * Thus we must call pcie_flr() directly without first checking if it is
3674 * supported.
3675 */
3676 if (!probe)
3677 pcie_flr(dev);
3678 return 0;
3679}
3680
3681#define SOUTH_CHICKEN2 0xc2004
3682#define PCH_PP_STATUS 0xc7200
3683#define PCH_PP_CONTROL 0xc7204
3684#define MSG_CTL 0x45010
3685#define NSDE_PWR_STATE 0xd0100
3686#define IGD_OPERATION_TIMEOUT 10000 /* set timeout 10 seconds */
3687
3688static int reset_ivb_igd(struct pci_dev *dev, int probe)
3689{
3690 void __iomem *mmio_base;
3691 unsigned long timeout;
3692 u32 val;
3693
3694 if (probe)
3695 return 0;
3696
3697 mmio_base = pci_iomap(dev, 0, 0);
3698 if (!mmio_base)
3699 return -ENOMEM;
3700
3701 iowrite32(0x00000002, mmio_base + MSG_CTL);
3702
3703 /*
3704 * Clobbering SOUTH_CHICKEN2 register is fine only if the next
3705 * driver loaded sets the right bits. However, this's a reset and
3706 * the bits have been set by i915 previously, so we clobber
3707 * SOUTH_CHICKEN2 register directly here.
3708 */
3709 iowrite32(0x00000005, mmio_base + SOUTH_CHICKEN2);
3710
3711 val = ioread32(mmio_base + PCH_PP_CONTROL) & 0xfffffffe;
3712 iowrite32(val, mmio_base + PCH_PP_CONTROL);
3713
3714 timeout = jiffies + msecs_to_jiffies(IGD_OPERATION_TIMEOUT);
3715 do {
3716 val = ioread32(mmio_base + PCH_PP_STATUS);
3717 if ((val & 0xb0000000) == 0)
3718 goto reset_complete;
3719 msleep(10);
3720 } while (time_before(jiffies, timeout));
3721 pci_warn(dev, "timeout during reset\n");
3722
3723reset_complete:
3724 iowrite32(0x00000002, mmio_base + NSDE_PWR_STATE);
3725
3726 pci_iounmap(dev, mmio_base);
3727 return 0;
3728}
3729
3730/* Device-specific reset method for Chelsio T4-based adapters */
3731static int reset_chelsio_generic_dev(struct pci_dev *dev, int probe)
3732{
3733 u16 old_command;
3734 u16 msix_flags;
3735
3736 /*
3737 * If this isn't a Chelsio T4-based device, return -ENOTTY indicating
3738 * that we have no device-specific reset method.
3739 */
3740 if ((dev->device & 0xf000) != 0x4000)
3741 return -ENOTTY;
3742
3743 /*
3744 * If this is the "probe" phase, return 0 indicating that we can
3745 * reset this device.
3746 */
3747 if (probe)
3748 return 0;
3749
3750 /*
3751 * T4 can wedge if there are DMAs in flight within the chip and Bus
3752 * Master has been disabled. We need to have it on till the Function
3753 * Level Reset completes. (BUS_MASTER is disabled in
3754 * pci_reset_function()).
3755 */
3756 pci_read_config_word(dev, PCI_COMMAND, &old_command);
3757 pci_write_config_word(dev, PCI_COMMAND,
3758 old_command | PCI_COMMAND_MASTER);
3759
3760 /*
3761 * Perform the actual device function reset, saving and restoring
3762 * configuration information around the reset.
3763 */
3764 pci_save_state(dev);
3765
3766 /*
3767 * T4 also suffers a Head-Of-Line blocking problem if MSI-X interrupts
3768 * are disabled when an MSI-X interrupt message needs to be delivered.
3769 * So we briefly re-enable MSI-X interrupts for the duration of the
3770 * FLR. The pci_restore_state() below will restore the original
3771 * MSI-X state.
3772 */
3773 pci_read_config_word(dev, dev->msix_cap+PCI_MSIX_FLAGS, &msix_flags);
3774 if ((msix_flags & PCI_MSIX_FLAGS_ENABLE) == 0)
3775 pci_write_config_word(dev, dev->msix_cap+PCI_MSIX_FLAGS,
3776 msix_flags |
3777 PCI_MSIX_FLAGS_ENABLE |
3778 PCI_MSIX_FLAGS_MASKALL);
3779
3780 pcie_flr(dev);
3781
3782 /*
3783 * Restore the configuration information (BAR values, etc.) including
3784 * the original PCI Configuration Space Command word, and return
3785 * success.
3786 */
3787 pci_restore_state(dev);
3788 pci_write_config_word(dev, PCI_COMMAND, old_command);
3789 return 0;
3790}
3791
3792#define PCI_DEVICE_ID_INTEL_82599_SFP_VF 0x10ed
3793#define PCI_DEVICE_ID_INTEL_IVB_M_VGA 0x0156
3794#define PCI_DEVICE_ID_INTEL_IVB_M2_VGA 0x0166
3795
3796/*
3797 * The Samsung SM961/PM961 controller can sometimes enter a fatal state after
3798 * FLR where config space reads from the device return -1. We seem to be
3799 * able to avoid this condition if we disable the NVMe controller prior to
3800 * FLR. This quirk is generic for any NVMe class device requiring similar
3801 * assistance to quiesce the device prior to FLR.
3802 *
3803 * NVMe specification: https://nvmexpress.org/resources/specifications/
3804 * Revision 1.0e:
3805 * Chapter 2: Required and optional PCI config registers
3806 * Chapter 3: NVMe control registers
3807 * Chapter 7.3: Reset behavior
3808 */
3809static int nvme_disable_and_flr(struct pci_dev *dev, int probe)
3810{
3811 void __iomem *bar;
3812 u16 cmd;
3813 u32 cfg;
3814
3815 if (dev->class != PCI_CLASS_STORAGE_EXPRESS ||
3816 !pcie_has_flr(dev) || !pci_resource_start(dev, 0))
3817 return -ENOTTY;
3818
3819 if (probe)
3820 return 0;
3821
3822 bar = pci_iomap(dev, 0, NVME_REG_CC + sizeof(cfg));
3823 if (!bar)
3824 return -ENOTTY;
3825
3826 pci_read_config_word(dev, PCI_COMMAND, &cmd);
3827 pci_write_config_word(dev, PCI_COMMAND, cmd | PCI_COMMAND_MEMORY);
3828
3829 cfg = readl(bar + NVME_REG_CC);
3830
3831 /* Disable controller if enabled */
3832 if (cfg & NVME_CC_ENABLE) {
3833 u32 cap = readl(bar + NVME_REG_CAP);
3834 unsigned long timeout;
3835
3836 /*
3837 * Per nvme_disable_ctrl() skip shutdown notification as it
3838 * could complete commands to the admin queue. We only intend
3839 * to quiesce the device before reset.
3840 */
3841 cfg &= ~(NVME_CC_SHN_MASK | NVME_CC_ENABLE);
3842
3843 writel(cfg, bar + NVME_REG_CC);
3844
3845 /*
3846 * Some controllers require an additional delay here, see
3847 * NVME_QUIRK_DELAY_BEFORE_CHK_RDY. None of those are yet
3848 * supported by this quirk.
3849 */
3850
3851 /* Cap register provides max timeout in 500ms increments */
3852 timeout = ((NVME_CAP_TIMEOUT(cap) + 1) * HZ / 2) + jiffies;
3853
3854 for (;;) {
3855 u32 status = readl(bar + NVME_REG_CSTS);
3856
3857 /* Ready status becomes zero on disable complete */
3858 if (!(status & NVME_CSTS_RDY))
3859 break;
3860
3861 msleep(100);
3862
3863 if (time_after(jiffies, timeout)) {
3864 pci_warn(dev, "Timeout waiting for NVMe ready status to clear after disable\n");
3865 break;
3866 }
3867 }
3868 }
3869
3870 pci_iounmap(dev, bar);
3871
3872 pcie_flr(dev);
3873
3874 return 0;
3875}
3876
3877/*
3878 * Intel DC P3700 NVMe controller will timeout waiting for ready status
3879 * to change after NVMe enable if the driver starts interacting with the
3880 * device too soon after FLR. A 250ms delay after FLR has heuristically
3881 * proven to produce reliably working results for device assignment cases.
3882 */
3883static int delay_250ms_after_flr(struct pci_dev *dev, int probe)
3884{
3885 if (!pcie_has_flr(dev))
3886 return -ENOTTY;
3887
3888 if (probe)
3889 return 0;
3890
3891 pcie_flr(dev);
3892
3893 msleep(250);
3894
3895 return 0;
3896}
3897
3898static const struct pci_dev_reset_methods pci_dev_reset_methods[] = {
3899 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82599_SFP_VF,
3900 reset_intel_82599_sfp_virtfn },
3901 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IVB_M_VGA,
3902 reset_ivb_igd },
3903 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IVB_M2_VGA,
3904 reset_ivb_igd },
3905 { PCI_VENDOR_ID_SAMSUNG, 0xa804, nvme_disable_and_flr },
3906 { PCI_VENDOR_ID_INTEL, 0x0953, delay_250ms_after_flr },
3907 { PCI_VENDOR_ID_CHELSIO, PCI_ANY_ID,
3908 reset_chelsio_generic_dev },
3909 { 0 }
3910};
3911
3912/*
3913 * These device-specific reset methods are here rather than in a driver
3914 * because when a host assigns a device to a guest VM, the host may need
3915 * to reset the device but probably doesn't have a driver for it.
3916 */
3917int pci_dev_specific_reset(struct pci_dev *dev, int probe)
3918{
3919 const struct pci_dev_reset_methods *i;
3920
3921 for (i = pci_dev_reset_methods; i->reset; i++) {
3922 if ((i->vendor == dev->vendor ||
3923 i->vendor == (u16)PCI_ANY_ID) &&
3924 (i->device == dev->device ||
3925 i->device == (u16)PCI_ANY_ID))
3926 return i->reset(dev, probe);
3927 }
3928
3929 return -ENOTTY;
3930}
3931
3932static void quirk_dma_func0_alias(struct pci_dev *dev)
3933{
3934 if (PCI_FUNC(dev->devfn) != 0)
3935 pci_add_dma_alias(dev, PCI_DEVFN(PCI_SLOT(dev->devfn), 0));
3936}
3937
3938/*
3939 * https://bugzilla.redhat.com/show_bug.cgi?id=605888
3940 *
3941 * Some Ricoh devices use function 0 as the PCIe requester ID for DMA.
3942 */
3943DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_RICOH, 0xe832, quirk_dma_func0_alias);
3944DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_RICOH, 0xe476, quirk_dma_func0_alias);
3945
3946static void quirk_dma_func1_alias(struct pci_dev *dev)
3947{
3948 if (PCI_FUNC(dev->devfn) != 1)
3949 pci_add_dma_alias(dev, PCI_DEVFN(PCI_SLOT(dev->devfn), 1));
3950}
3951
3952/*
3953 * Marvell 88SE9123 uses function 1 as the requester ID for DMA. In some
3954 * SKUs function 1 is present and is a legacy IDE controller, in other
3955 * SKUs this function is not present, making this a ghost requester.
3956 * https://bugzilla.kernel.org/show_bug.cgi?id=42679
3957 */
3958DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9120,
3959 quirk_dma_func1_alias);
3960DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9123,
3961 quirk_dma_func1_alias);
3962DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9128,
3963 quirk_dma_func1_alias);
3964/* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c14 */
3965DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9130,
3966 quirk_dma_func1_alias);
3967DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9170,
3968 quirk_dma_func1_alias);
3969/* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c47 + c57 */
3970DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9172,
3971 quirk_dma_func1_alias);
3972/* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c59 */
3973DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x917a,
3974 quirk_dma_func1_alias);
3975/* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c78 */
3976DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9182,
3977 quirk_dma_func1_alias);
3978/* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c134 */
3979DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9183,
3980 quirk_dma_func1_alias);
3981/* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c46 */
3982DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x91a0,
3983 quirk_dma_func1_alias);
3984/* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c127 */
3985DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9220,
3986 quirk_dma_func1_alias);
3987/* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c49 */
3988DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9230,
3989 quirk_dma_func1_alias);
3990DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TTI, 0x0642,
3991 quirk_dma_func1_alias);
3992DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TTI, 0x0645,
3993 quirk_dma_func1_alias);
3994/* https://bugs.gentoo.org/show_bug.cgi?id=497630 */
3995DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_JMICRON,
3996 PCI_DEVICE_ID_JMICRON_JMB388_ESD,
3997 quirk_dma_func1_alias);
3998/* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c117 */
3999DECLARE_PCI_FIXUP_HEADER(0x1c28, /* Lite-On */
4000 0x0122, /* Plextor M6E (Marvell 88SS9183)*/
4001 quirk_dma_func1_alias);
4002
4003/*
4004 * Some devices DMA with the wrong devfn, not just the wrong function.
4005 * quirk_fixed_dma_alias() uses this table to create fixed aliases, where
4006 * the alias is "fixed" and independent of the device devfn.
4007 *
4008 * For example, the Adaptec 3405 is a PCIe card with an Intel 80333 I/O
4009 * processor. To software, this appears as a PCIe-to-PCI/X bridge with a
4010 * single device on the secondary bus. In reality, the single exposed
4011 * device at 0e.0 is the Address Translation Unit (ATU) of the controller
4012 * that provides a bridge to the internal bus of the I/O processor. The
4013 * controller supports private devices, which can be hidden from PCI config
4014 * space. In the case of the Adaptec 3405, a private device at 01.0
4015 * appears to be the DMA engine, which therefore needs to become a DMA
4016 * alias for the device.
4017 */
4018static const struct pci_device_id fixed_dma_alias_tbl[] = {
4019 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x0285,
4020 PCI_VENDOR_ID_ADAPTEC2, 0x02bb), /* Adaptec 3405 */
4021 .driver_data = PCI_DEVFN(1, 0) },
4022 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x0285,
4023 PCI_VENDOR_ID_ADAPTEC2, 0x02bc), /* Adaptec 3805 */
4024 .driver_data = PCI_DEVFN(1, 0) },
4025 { 0 }
4026};
4027
4028static void quirk_fixed_dma_alias(struct pci_dev *dev)
4029{
4030 const struct pci_device_id *id;
4031
4032 id = pci_match_id(fixed_dma_alias_tbl, dev);
4033 if (id)
4034 pci_add_dma_alias(dev, id->driver_data);
4035}
4036
4037DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ADAPTEC2, 0x0285, quirk_fixed_dma_alias);
4038
4039/*
4040 * A few PCIe-to-PCI bridges fail to expose a PCIe capability, resulting in
4041 * using the wrong DMA alias for the device. Some of these devices can be
4042 * used as either forward or reverse bridges, so we need to test whether the
4043 * device is operating in the correct mode. We could probably apply this
4044 * quirk to PCI_ANY_ID, but for now we'll just use known offenders. The test
4045 * is for a non-root, non-PCIe bridge where the upstream device is PCIe and
4046 * is not a PCIe-to-PCI bridge, then @pdev is actually a PCIe-to-PCI bridge.
4047 */
4048static void quirk_use_pcie_bridge_dma_alias(struct pci_dev *pdev)
4049{
4050 if (!pci_is_root_bus(pdev->bus) &&
4051 pdev->hdr_type == PCI_HEADER_TYPE_BRIDGE &&
4052 !pci_is_pcie(pdev) && pci_is_pcie(pdev->bus->self) &&
4053 pci_pcie_type(pdev->bus->self) != PCI_EXP_TYPE_PCI_BRIDGE)
4054 pdev->dev_flags |= PCI_DEV_FLAG_PCIE_BRIDGE_ALIAS;
4055}
4056/* ASM1083/1085, https://bugzilla.kernel.org/show_bug.cgi?id=44881#c46 */
4057DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ASMEDIA, 0x1080,
4058 quirk_use_pcie_bridge_dma_alias);
4059/* Tundra 8113, https://bugzilla.kernel.org/show_bug.cgi?id=44881#c43 */
4060DECLARE_PCI_FIXUP_HEADER(0x10e3, 0x8113, quirk_use_pcie_bridge_dma_alias);
4061/* ITE 8892, https://bugzilla.kernel.org/show_bug.cgi?id=73551 */
4062DECLARE_PCI_FIXUP_HEADER(0x1283, 0x8892, quirk_use_pcie_bridge_dma_alias);
4063/* ITE 8893 has the same problem as the 8892 */
4064DECLARE_PCI_FIXUP_HEADER(0x1283, 0x8893, quirk_use_pcie_bridge_dma_alias);
4065/* Intel 82801, https://bugzilla.kernel.org/show_bug.cgi?id=44881#c49 */
4066DECLARE_PCI_FIXUP_HEADER(0x8086, 0x244e, quirk_use_pcie_bridge_dma_alias);
4067
4068/*
4069 * MIC x200 NTB forwards PCIe traffic using multiple alien RIDs. They have to
4070 * be added as aliases to the DMA device in order to allow buffer access
4071 * when IOMMU is enabled. Following devfns have to match RIT-LUT table
4072 * programmed in the EEPROM.
4073 */
4074static void quirk_mic_x200_dma_alias(struct pci_dev *pdev)
4075{
4076 pci_add_dma_alias(pdev, PCI_DEVFN(0x10, 0x0));
4077 pci_add_dma_alias(pdev, PCI_DEVFN(0x11, 0x0));
4078 pci_add_dma_alias(pdev, PCI_DEVFN(0x12, 0x3));
4079}
4080DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2260, quirk_mic_x200_dma_alias);
4081DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2264, quirk_mic_x200_dma_alias);
4082
4083/*
4084 * The IOMMU and interrupt controller on Broadcom Vulcan/Cavium ThunderX2 are
4085 * associated not at the root bus, but at a bridge below. This quirk avoids
4086 * generating invalid DMA aliases.
4087 */
4088static void quirk_bridge_cavm_thrx2_pcie_root(struct pci_dev *pdev)
4089{
4090 pdev->dev_flags |= PCI_DEV_FLAGS_BRIDGE_XLATE_ROOT;
4091}
4092DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM, 0x9000,
4093 quirk_bridge_cavm_thrx2_pcie_root);
4094DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM, 0x9084,
4095 quirk_bridge_cavm_thrx2_pcie_root);
4096
4097/*
4098 * Intersil/Techwell TW686[4589]-based video capture cards have an empty (zero)
4099 * class code. Fix it.
4100 */
4101static void quirk_tw686x_class(struct pci_dev *pdev)
4102{
4103 u32 class = pdev->class;
4104
4105 /* Use "Multimedia controller" class */
4106 pdev->class = (PCI_CLASS_MULTIMEDIA_OTHER << 8) | 0x01;
4107 pci_info(pdev, "TW686x PCI class overridden (%#08x -> %#08x)\n",
4108 class, pdev->class);
4109}
4110DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6864, PCI_CLASS_NOT_DEFINED, 8,
4111 quirk_tw686x_class);
4112DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6865, PCI_CLASS_NOT_DEFINED, 8,
4113 quirk_tw686x_class);
4114DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6868, PCI_CLASS_NOT_DEFINED, 8,
4115 quirk_tw686x_class);
4116DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6869, PCI_CLASS_NOT_DEFINED, 8,
4117 quirk_tw686x_class);
4118
4119/*
4120 * Some devices have problems with Transaction Layer Packets with the Relaxed
4121 * Ordering Attribute set. Such devices should mark themselves and other
4122 * device drivers should check before sending TLPs with RO set.
4123 */
4124static void quirk_relaxedordering_disable(struct pci_dev *dev)
4125{
4126 dev->dev_flags |= PCI_DEV_FLAGS_NO_RELAXED_ORDERING;
4127 pci_info(dev, "Disable Relaxed Ordering Attributes to avoid PCIe Completion erratum\n");
4128}
4129
4130/*
4131 * Intel Xeon processors based on Broadwell/Haswell microarchitecture Root
4132 * Complex have a Flow Control Credit issue which can cause performance
4133 * problems with Upstream Transaction Layer Packets with Relaxed Ordering set.
4134 */
4135DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f01, PCI_CLASS_NOT_DEFINED, 8,
4136 quirk_relaxedordering_disable);
4137DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f02, PCI_CLASS_NOT_DEFINED, 8,
4138 quirk_relaxedordering_disable);
4139DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f03, PCI_CLASS_NOT_DEFINED, 8,
4140 quirk_relaxedordering_disable);
4141DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f04, PCI_CLASS_NOT_DEFINED, 8,
4142 quirk_relaxedordering_disable);
4143DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f05, PCI_CLASS_NOT_DEFINED, 8,
4144 quirk_relaxedordering_disable);
4145DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f06, PCI_CLASS_NOT_DEFINED, 8,
4146 quirk_relaxedordering_disable);
4147DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f07, PCI_CLASS_NOT_DEFINED, 8,
4148 quirk_relaxedordering_disable);
4149DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f08, PCI_CLASS_NOT_DEFINED, 8,
4150 quirk_relaxedordering_disable);
4151DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f09, PCI_CLASS_NOT_DEFINED, 8,
4152 quirk_relaxedordering_disable);
4153DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0a, PCI_CLASS_NOT_DEFINED, 8,
4154 quirk_relaxedordering_disable);
4155DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0b, PCI_CLASS_NOT_DEFINED, 8,
4156 quirk_relaxedordering_disable);
4157DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0c, PCI_CLASS_NOT_DEFINED, 8,
4158 quirk_relaxedordering_disable);
4159DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0d, PCI_CLASS_NOT_DEFINED, 8,
4160 quirk_relaxedordering_disable);
4161DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0e, PCI_CLASS_NOT_DEFINED, 8,
4162 quirk_relaxedordering_disable);
4163DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f01, PCI_CLASS_NOT_DEFINED, 8,
4164 quirk_relaxedordering_disable);
4165DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f02, PCI_CLASS_NOT_DEFINED, 8,
4166 quirk_relaxedordering_disable);
4167DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f03, PCI_CLASS_NOT_DEFINED, 8,
4168 quirk_relaxedordering_disable);
4169DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f04, PCI_CLASS_NOT_DEFINED, 8,
4170 quirk_relaxedordering_disable);
4171DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f05, PCI_CLASS_NOT_DEFINED, 8,
4172 quirk_relaxedordering_disable);
4173DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f06, PCI_CLASS_NOT_DEFINED, 8,
4174 quirk_relaxedordering_disable);
4175DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f07, PCI_CLASS_NOT_DEFINED, 8,
4176 quirk_relaxedordering_disable);
4177DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f08, PCI_CLASS_NOT_DEFINED, 8,
4178 quirk_relaxedordering_disable);
4179DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f09, PCI_CLASS_NOT_DEFINED, 8,
4180 quirk_relaxedordering_disable);
4181DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0a, PCI_CLASS_NOT_DEFINED, 8,
4182 quirk_relaxedordering_disable);
4183DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0b, PCI_CLASS_NOT_DEFINED, 8,
4184 quirk_relaxedordering_disable);
4185DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0c, PCI_CLASS_NOT_DEFINED, 8,
4186 quirk_relaxedordering_disable);
4187DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0d, PCI_CLASS_NOT_DEFINED, 8,
4188 quirk_relaxedordering_disable);
4189DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0e, PCI_CLASS_NOT_DEFINED, 8,
4190 quirk_relaxedordering_disable);
4191
4192/*
4193 * The AMD ARM A1100 (aka "SEATTLE") SoC has a bug in its PCIe Root Complex
4194 * where Upstream Transaction Layer Packets with the Relaxed Ordering
4195 * Attribute clear are allowed to bypass earlier TLPs with Relaxed Ordering
4196 * set. This is a violation of the PCIe 3.0 Transaction Ordering Rules
4197 * outlined in Section 2.4.1 (PCI Express(r) Base Specification Revision 3.0
4198 * November 10, 2010). As a result, on this platform we can't use Relaxed
4199 * Ordering for Upstream TLPs.
4200 */
4201DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AMD, 0x1a00, PCI_CLASS_NOT_DEFINED, 8,
4202 quirk_relaxedordering_disable);
4203DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AMD, 0x1a01, PCI_CLASS_NOT_DEFINED, 8,
4204 quirk_relaxedordering_disable);
4205DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AMD, 0x1a02, PCI_CLASS_NOT_DEFINED, 8,
4206 quirk_relaxedordering_disable);
4207
4208/*
4209 * Per PCIe r3.0, sec 2.2.9, "Completion headers must supply the same
4210 * values for the Attribute as were supplied in the header of the
4211 * corresponding Request, except as explicitly allowed when IDO is used."
4212 *
4213 * If a non-compliant device generates a completion with a different
4214 * attribute than the request, the receiver may accept it (which itself
4215 * seems non-compliant based on sec 2.3.2), or it may handle it as a
4216 * Malformed TLP or an Unexpected Completion, which will probably lead to a
4217 * device access timeout.
4218 *
4219 * If the non-compliant device generates completions with zero attributes
4220 * (instead of copying the attributes from the request), we can work around
4221 * this by disabling the "Relaxed Ordering" and "No Snoop" attributes in
4222 * upstream devices so they always generate requests with zero attributes.
4223 *
4224 * This affects other devices under the same Root Port, but since these
4225 * attributes are performance hints, there should be no functional problem.
4226 *
4227 * Note that Configuration Space accesses are never supposed to have TLP
4228 * Attributes, so we're safe waiting till after any Configuration Space
4229 * accesses to do the Root Port fixup.
4230 */
4231static void quirk_disable_root_port_attributes(struct pci_dev *pdev)
4232{
4233 struct pci_dev *root_port = pci_find_pcie_root_port(pdev);
4234
4235 if (!root_port) {
4236 pci_warn(pdev, "PCIe Completion erratum may cause device errors\n");
4237 return;
4238 }
4239
4240 pci_info(root_port, "Disabling No Snoop/Relaxed Ordering Attributes to avoid PCIe Completion erratum in %s\n",
4241 dev_name(&pdev->dev));
4242 pcie_capability_clear_and_set_word(root_port, PCI_EXP_DEVCTL,
4243 PCI_EXP_DEVCTL_RELAX_EN |
4244 PCI_EXP_DEVCTL_NOSNOOP_EN, 0);
4245}
4246
4247/*
4248 * The Chelsio T5 chip fails to copy TLP Attributes from a Request to the
4249 * Completion it generates.
4250 */
4251static void quirk_chelsio_T5_disable_root_port_attributes(struct pci_dev *pdev)
4252{
4253 /*
4254 * This mask/compare operation selects for Physical Function 4 on a
4255 * T5. We only need to fix up the Root Port once for any of the
4256 * PFs. PF[0..3] have PCI Device IDs of 0x50xx, but PF4 is uniquely
4257 * 0x54xx so we use that one.
4258 */
4259 if ((pdev->device & 0xff00) == 0x5400)
4260 quirk_disable_root_port_attributes(pdev);
4261}
4262DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_CHELSIO, PCI_ANY_ID,
4263 quirk_chelsio_T5_disable_root_port_attributes);
4264
4265/*
4266 * AMD has indicated that the devices below do not support peer-to-peer
4267 * in any system where they are found in the southbridge with an AMD
4268 * IOMMU in the system. Multifunction devices that do not support
4269 * peer-to-peer between functions can claim to support a subset of ACS.
4270 * Such devices effectively enable request redirect (RR) and completion
4271 * redirect (CR) since all transactions are redirected to the upstream
4272 * root complex.
4273 *
4274 * http://permalink.gmane.org/gmane.comp.emulators.kvm.devel/94086
4275 * http://permalink.gmane.org/gmane.comp.emulators.kvm.devel/94102
4276 * http://permalink.gmane.org/gmane.comp.emulators.kvm.devel/99402
4277 *
4278 * 1002:4385 SBx00 SMBus Controller
4279 * 1002:439c SB7x0/SB8x0/SB9x0 IDE Controller
4280 * 1002:4383 SBx00 Azalia (Intel HDA)
4281 * 1002:439d SB7x0/SB8x0/SB9x0 LPC host controller
4282 * 1002:4384 SBx00 PCI to PCI Bridge
4283 * 1002:4399 SB7x0/SB8x0/SB9x0 USB OHCI2 Controller
4284 *
4285 * https://bugzilla.kernel.org/show_bug.cgi?id=81841#c15
4286 *
4287 * 1022:780f [AMD] FCH PCI Bridge
4288 * 1022:7809 [AMD] FCH USB OHCI Controller
4289 */
4290static int pci_quirk_amd_sb_acs(struct pci_dev *dev, u16 acs_flags)
4291{
4292#ifdef CONFIG_ACPI
4293 struct acpi_table_header *header = NULL;
4294 acpi_status status;
4295
4296 /* Targeting multifunction devices on the SB (appears on root bus) */
4297 if (!dev->multifunction || !pci_is_root_bus(dev->bus))
4298 return -ENODEV;
4299
4300 /* The IVRS table describes the AMD IOMMU */
4301 status = acpi_get_table("IVRS", 0, &header);
4302 if (ACPI_FAILURE(status))
4303 return -ENODEV;
4304
4305 /* Filter out flags not applicable to multifunction */
4306 acs_flags &= (PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_EC | PCI_ACS_DT);
4307
4308 return acs_flags & ~(PCI_ACS_RR | PCI_ACS_CR) ? 0 : 1;
4309#else
4310 return -ENODEV;
4311#endif
4312}
4313
4314static bool pci_quirk_cavium_acs_match(struct pci_dev *dev)
4315{
4316 /*
4317 * Effectively selects all downstream ports for whole ThunderX 1
4318 * family by 0xf800 mask (which represents 8 SoCs), while the lower
4319 * bits of device ID are used to indicate which subdevice is used
4320 * within the SoC.
4321 */
4322 return (pci_is_pcie(dev) &&
4323 (pci_pcie_type(dev) == PCI_EXP_TYPE_ROOT_PORT) &&
4324 ((dev->device & 0xf800) == 0xa000));
4325}
4326
4327static int pci_quirk_cavium_acs(struct pci_dev *dev, u16 acs_flags)
4328{
4329 /*
4330 * Cavium root ports don't advertise an ACS capability. However,
4331 * the RTL internally implements similar protection as if ACS had
4332 * Request Redirection, Completion Redirection, Source Validation,
4333 * and Upstream Forwarding features enabled. Assert that the
4334 * hardware implements and enables equivalent ACS functionality for
4335 * these flags.
4336 */
4337 acs_flags &= ~(PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_SV | PCI_ACS_UF);
4338
4339 if (!pci_quirk_cavium_acs_match(dev))
4340 return -ENOTTY;
4341
4342 return acs_flags ? 0 : 1;
4343}
4344
4345static int pci_quirk_xgene_acs(struct pci_dev *dev, u16 acs_flags)
4346{
4347 /*
4348 * X-Gene Root Ports matching this quirk do not allow peer-to-peer
4349 * transactions with others, allowing masking out these bits as if they
4350 * were unimplemented in the ACS capability.
4351 */
4352 acs_flags &= ~(PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4353
4354 return acs_flags ? 0 : 1;
4355}
4356
4357/*
4358 * Many Intel PCH root ports do provide ACS-like features to disable peer
4359 * transactions and validate bus numbers in requests, but do not provide an
4360 * actual PCIe ACS capability. This is the list of device IDs known to fall
4361 * into that category as provided by Intel in Red Hat bugzilla 1037684.
4362 */
4363static const u16 pci_quirk_intel_pch_acs_ids[] = {
4364 /* Ibexpeak PCH */
4365 0x3b42, 0x3b43, 0x3b44, 0x3b45, 0x3b46, 0x3b47, 0x3b48, 0x3b49,
4366 0x3b4a, 0x3b4b, 0x3b4c, 0x3b4d, 0x3b4e, 0x3b4f, 0x3b50, 0x3b51,
4367 /* Cougarpoint PCH */
4368 0x1c10, 0x1c11, 0x1c12, 0x1c13, 0x1c14, 0x1c15, 0x1c16, 0x1c17,
4369 0x1c18, 0x1c19, 0x1c1a, 0x1c1b, 0x1c1c, 0x1c1d, 0x1c1e, 0x1c1f,
4370 /* Pantherpoint PCH */
4371 0x1e10, 0x1e11, 0x1e12, 0x1e13, 0x1e14, 0x1e15, 0x1e16, 0x1e17,
4372 0x1e18, 0x1e19, 0x1e1a, 0x1e1b, 0x1e1c, 0x1e1d, 0x1e1e, 0x1e1f,
4373 /* Lynxpoint-H PCH */
4374 0x8c10, 0x8c11, 0x8c12, 0x8c13, 0x8c14, 0x8c15, 0x8c16, 0x8c17,
4375 0x8c18, 0x8c19, 0x8c1a, 0x8c1b, 0x8c1c, 0x8c1d, 0x8c1e, 0x8c1f,
4376 /* Lynxpoint-LP PCH */
4377 0x9c10, 0x9c11, 0x9c12, 0x9c13, 0x9c14, 0x9c15, 0x9c16, 0x9c17,
4378 0x9c18, 0x9c19, 0x9c1a, 0x9c1b,
4379 /* Wildcat PCH */
4380 0x9c90, 0x9c91, 0x9c92, 0x9c93, 0x9c94, 0x9c95, 0x9c96, 0x9c97,
4381 0x9c98, 0x9c99, 0x9c9a, 0x9c9b,
4382 /* Patsburg (X79) PCH */
4383 0x1d10, 0x1d12, 0x1d14, 0x1d16, 0x1d18, 0x1d1a, 0x1d1c, 0x1d1e,
4384 /* Wellsburg (X99) PCH */
4385 0x8d10, 0x8d11, 0x8d12, 0x8d13, 0x8d14, 0x8d15, 0x8d16, 0x8d17,
4386 0x8d18, 0x8d19, 0x8d1a, 0x8d1b, 0x8d1c, 0x8d1d, 0x8d1e,
4387 /* Lynx Point (9 series) PCH */
4388 0x8c90, 0x8c92, 0x8c94, 0x8c96, 0x8c98, 0x8c9a, 0x8c9c, 0x8c9e,
4389};
4390
4391static bool pci_quirk_intel_pch_acs_match(struct pci_dev *dev)
4392{
4393 int i;
4394
4395 /* Filter out a few obvious non-matches first */
4396 if (!pci_is_pcie(dev) || pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT)
4397 return false;
4398
4399 for (i = 0; i < ARRAY_SIZE(pci_quirk_intel_pch_acs_ids); i++)
4400 if (pci_quirk_intel_pch_acs_ids[i] == dev->device)
4401 return true;
4402
4403 return false;
4404}
4405
4406#define INTEL_PCH_ACS_FLAGS (PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF | PCI_ACS_SV)
4407
4408static int pci_quirk_intel_pch_acs(struct pci_dev *dev, u16 acs_flags)
4409{
4410 u16 flags = dev->dev_flags & PCI_DEV_FLAGS_ACS_ENABLED_QUIRK ?
4411 INTEL_PCH_ACS_FLAGS : 0;
4412
4413 if (!pci_quirk_intel_pch_acs_match(dev))
4414 return -ENOTTY;
4415
4416 return acs_flags & ~flags ? 0 : 1;
4417}
4418
4419/*
4420 * These QCOM root ports do provide ACS-like features to disable peer
4421 * transactions and validate bus numbers in requests, but do not provide an
4422 * actual PCIe ACS capability. Hardware supports source validation but it
4423 * will report the issue as Completer Abort instead of ACS Violation.
4424 * Hardware doesn't support peer-to-peer and each root port is a root
4425 * complex with unique segment numbers. It is not possible for one root
4426 * port to pass traffic to another root port. All PCIe transactions are
4427 * terminated inside the root port.
4428 */
4429static int pci_quirk_qcom_rp_acs(struct pci_dev *dev, u16 acs_flags)
4430{
4431 u16 flags = (PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF | PCI_ACS_SV);
4432 int ret = acs_flags & ~flags ? 0 : 1;
4433
4434 pci_info(dev, "Using QCOM ACS Quirk (%d)\n", ret);
4435
4436 return ret;
4437}
4438
4439static int pci_quirk_al_acs(struct pci_dev *dev, u16 acs_flags)
4440{
4441 if (pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT)
4442 return -ENOTTY;
4443
4444 /*
4445 * Amazon's Annapurna Labs root ports don't include an ACS capability,
4446 * but do include ACS-like functionality. The hardware doesn't support
4447 * peer-to-peer transactions via the root port and each has a unique
4448 * segment number.
4449 *
4450 * Additionally, the root ports cannot send traffic to each other.
4451 */
4452 acs_flags &= ~(PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4453
4454 return acs_flags ? 0 : 1;
4455}
4456
4457/*
4458 * Sunrise Point PCH root ports implement ACS, but unfortunately as shown in
4459 * the datasheet (Intel 100 Series Chipset Family PCH Datasheet, Vol. 2,
4460 * 12.1.46, 12.1.47)[1] this chipset uses dwords for the ACS capability and
4461 * control registers whereas the PCIe spec packs them into words (Rev 3.0,
4462 * 7.16 ACS Extended Capability). The bit definitions are correct, but the
4463 * control register is at offset 8 instead of 6 and we should probably use
4464 * dword accesses to them. This applies to the following PCI Device IDs, as
4465 * found in volume 1 of the datasheet[2]:
4466 *
4467 * 0xa110-0xa11f Sunrise Point-H PCI Express Root Port #{0-16}
4468 * 0xa167-0xa16a Sunrise Point-H PCI Express Root Port #{17-20}
4469 *
4470 * N.B. This doesn't fix what lspci shows.
4471 *
4472 * The 100 series chipset specification update includes this as errata #23[3].
4473 *
4474 * The 200 series chipset (Union Point) has the same bug according to the
4475 * specification update (Intel 200 Series Chipset Family Platform Controller
4476 * Hub, Specification Update, January 2017, Revision 001, Document# 335194-001,
4477 * Errata 22)[4]. Per the datasheet[5], root port PCI Device IDs for this
4478 * chipset include:
4479 *
4480 * 0xa290-0xa29f PCI Express Root port #{0-16}
4481 * 0xa2e7-0xa2ee PCI Express Root port #{17-24}
4482 *
4483 * Mobile chipsets are also affected, 7th & 8th Generation
4484 * Specification update confirms ACS errata 22, status no fix: (7th Generation
4485 * Intel Processor Family I/O for U/Y Platforms and 8th Generation Intel
4486 * Processor Family I/O for U Quad Core Platforms Specification Update,
4487 * August 2017, Revision 002, Document#: 334660-002)[6]
4488 * Device IDs from I/O datasheet: (7th Generation Intel Processor Family I/O
4489 * for U/Y Platforms and 8th Generation Intel ® Processor Family I/O for U
4490 * Quad Core Platforms, Vol 1 of 2, August 2017, Document#: 334658-003)[7]
4491 *
4492 * 0x9d10-0x9d1b PCI Express Root port #{1-12}
4493 *
4494 * [1] http://www.intel.com/content/www/us/en/chipsets/100-series-chipset-datasheet-vol-2.html
4495 * [2] http://www.intel.com/content/www/us/en/chipsets/100-series-chipset-datasheet-vol-1.html
4496 * [3] http://www.intel.com/content/www/us/en/chipsets/100-series-chipset-spec-update.html
4497 * [4] http://www.intel.com/content/www/us/en/chipsets/200-series-chipset-pch-spec-update.html
4498 * [5] http://www.intel.com/content/www/us/en/chipsets/200-series-chipset-pch-datasheet-vol-1.html
4499 * [6] https://www.intel.com/content/www/us/en/processors/core/7th-gen-core-family-mobile-u-y-processor-lines-i-o-spec-update.html
4500 * [7] https://www.intel.com/content/www/us/en/processors/core/7th-gen-core-family-mobile-u-y-processor-lines-i-o-datasheet-vol-1.html
4501 */
4502static bool pci_quirk_intel_spt_pch_acs_match(struct pci_dev *dev)
4503{
4504 if (!pci_is_pcie(dev) || pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT)
4505 return false;
4506
4507 switch (dev->device) {
4508 case 0xa110 ... 0xa11f: case 0xa167 ... 0xa16a: /* Sunrise Point */
4509 case 0xa290 ... 0xa29f: case 0xa2e7 ... 0xa2ee: /* Union Point */
4510 case 0x9d10 ... 0x9d1b: /* 7th & 8th Gen Mobile */
4511 return true;
4512 }
4513
4514 return false;
4515}
4516
4517#define INTEL_SPT_ACS_CTRL (PCI_ACS_CAP + 4)
4518
4519static int pci_quirk_intel_spt_pch_acs(struct pci_dev *dev, u16 acs_flags)
4520{
4521 int pos;
4522 u32 cap, ctrl;
4523
4524 if (!pci_quirk_intel_spt_pch_acs_match(dev))
4525 return -ENOTTY;
4526
4527 pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ACS);
4528 if (!pos)
4529 return -ENOTTY;
4530
4531 /* see pci_acs_flags_enabled() */
4532 pci_read_config_dword(dev, pos + PCI_ACS_CAP, &cap);
4533 acs_flags &= (cap | PCI_ACS_EC);
4534
4535 pci_read_config_dword(dev, pos + INTEL_SPT_ACS_CTRL, &ctrl);
4536
4537 return acs_flags & ~ctrl ? 0 : 1;
4538}
4539
4540static int pci_quirk_mf_endpoint_acs(struct pci_dev *dev, u16 acs_flags)
4541{
4542 /*
4543 * SV, TB, and UF are not relevant to multifunction endpoints.
4544 *
4545 * Multifunction devices are only required to implement RR, CR, and DT
4546 * in their ACS capability if they support peer-to-peer transactions.
4547 * Devices matching this quirk have been verified by the vendor to not
4548 * perform peer-to-peer with other functions, allowing us to mask out
4549 * these bits as if they were unimplemented in the ACS capability.
4550 */
4551 acs_flags &= ~(PCI_ACS_SV | PCI_ACS_TB | PCI_ACS_RR |
4552 PCI_ACS_CR | PCI_ACS_UF | PCI_ACS_DT);
4553
4554 return acs_flags ? 0 : 1;
4555}
4556
4557static int pci_quirk_brcm_acs(struct pci_dev *dev, u16 acs_flags)
4558{
4559 /*
4560 * iProc PAXB Root Ports don't advertise an ACS capability, but
4561 * they do not allow peer-to-peer transactions between Root Ports.
4562 * Allow each Root Port to be in a separate IOMMU group by masking
4563 * SV/RR/CR/UF bits.
4564 */
4565 acs_flags &= ~(PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4566
4567 return acs_flags ? 0 : 1;
4568}
4569
4570static const struct pci_dev_acs_enabled {
4571 u16 vendor;
4572 u16 device;
4573 int (*acs_enabled)(struct pci_dev *dev, u16 acs_flags);
4574} pci_dev_acs_enabled[] = {
4575 { PCI_VENDOR_ID_ATI, 0x4385, pci_quirk_amd_sb_acs },
4576 { PCI_VENDOR_ID_ATI, 0x439c, pci_quirk_amd_sb_acs },
4577 { PCI_VENDOR_ID_ATI, 0x4383, pci_quirk_amd_sb_acs },
4578 { PCI_VENDOR_ID_ATI, 0x439d, pci_quirk_amd_sb_acs },
4579 { PCI_VENDOR_ID_ATI, 0x4384, pci_quirk_amd_sb_acs },
4580 { PCI_VENDOR_ID_ATI, 0x4399, pci_quirk_amd_sb_acs },
4581 { PCI_VENDOR_ID_AMD, 0x780f, pci_quirk_amd_sb_acs },
4582 { PCI_VENDOR_ID_AMD, 0x7809, pci_quirk_amd_sb_acs },
4583 { PCI_VENDOR_ID_SOLARFLARE, 0x0903, pci_quirk_mf_endpoint_acs },
4584 { PCI_VENDOR_ID_SOLARFLARE, 0x0923, pci_quirk_mf_endpoint_acs },
4585 { PCI_VENDOR_ID_SOLARFLARE, 0x0A03, pci_quirk_mf_endpoint_acs },
4586 { PCI_VENDOR_ID_INTEL, 0x10C6, pci_quirk_mf_endpoint_acs },
4587 { PCI_VENDOR_ID_INTEL, 0x10DB, pci_quirk_mf_endpoint_acs },
4588 { PCI_VENDOR_ID_INTEL, 0x10DD, pci_quirk_mf_endpoint_acs },
4589 { PCI_VENDOR_ID_INTEL, 0x10E1, pci_quirk_mf_endpoint_acs },
4590 { PCI_VENDOR_ID_INTEL, 0x10F1, pci_quirk_mf_endpoint_acs },
4591 { PCI_VENDOR_ID_INTEL, 0x10F7, pci_quirk_mf_endpoint_acs },
4592 { PCI_VENDOR_ID_INTEL, 0x10F8, pci_quirk_mf_endpoint_acs },
4593 { PCI_VENDOR_ID_INTEL, 0x10F9, pci_quirk_mf_endpoint_acs },
4594 { PCI_VENDOR_ID_INTEL, 0x10FA, pci_quirk_mf_endpoint_acs },
4595 { PCI_VENDOR_ID_INTEL, 0x10FB, pci_quirk_mf_endpoint_acs },
4596 { PCI_VENDOR_ID_INTEL, 0x10FC, pci_quirk_mf_endpoint_acs },
4597 { PCI_VENDOR_ID_INTEL, 0x1507, pci_quirk_mf_endpoint_acs },
4598 { PCI_VENDOR_ID_INTEL, 0x1514, pci_quirk_mf_endpoint_acs },
4599 { PCI_VENDOR_ID_INTEL, 0x151C, pci_quirk_mf_endpoint_acs },
4600 { PCI_VENDOR_ID_INTEL, 0x1529, pci_quirk_mf_endpoint_acs },
4601 { PCI_VENDOR_ID_INTEL, 0x152A, pci_quirk_mf_endpoint_acs },
4602 { PCI_VENDOR_ID_INTEL, 0x154D, pci_quirk_mf_endpoint_acs },
4603 { PCI_VENDOR_ID_INTEL, 0x154F, pci_quirk_mf_endpoint_acs },
4604 { PCI_VENDOR_ID_INTEL, 0x1551, pci_quirk_mf_endpoint_acs },
4605 { PCI_VENDOR_ID_INTEL, 0x1558, pci_quirk_mf_endpoint_acs },
4606 /* 82580 */
4607 { PCI_VENDOR_ID_INTEL, 0x1509, pci_quirk_mf_endpoint_acs },
4608 { PCI_VENDOR_ID_INTEL, 0x150E, pci_quirk_mf_endpoint_acs },
4609 { PCI_VENDOR_ID_INTEL, 0x150F, pci_quirk_mf_endpoint_acs },
4610 { PCI_VENDOR_ID_INTEL, 0x1510, pci_quirk_mf_endpoint_acs },
4611 { PCI_VENDOR_ID_INTEL, 0x1511, pci_quirk_mf_endpoint_acs },
4612 { PCI_VENDOR_ID_INTEL, 0x1516, pci_quirk_mf_endpoint_acs },
4613 { PCI_VENDOR_ID_INTEL, 0x1527, pci_quirk_mf_endpoint_acs },
4614 /* 82576 */
4615 { PCI_VENDOR_ID_INTEL, 0x10C9, pci_quirk_mf_endpoint_acs },
4616 { PCI_VENDOR_ID_INTEL, 0x10E6, pci_quirk_mf_endpoint_acs },
4617 { PCI_VENDOR_ID_INTEL, 0x10E7, pci_quirk_mf_endpoint_acs },
4618 { PCI_VENDOR_ID_INTEL, 0x10E8, pci_quirk_mf_endpoint_acs },
4619 { PCI_VENDOR_ID_INTEL, 0x150A, pci_quirk_mf_endpoint_acs },
4620 { PCI_VENDOR_ID_INTEL, 0x150D, pci_quirk_mf_endpoint_acs },
4621 { PCI_VENDOR_ID_INTEL, 0x1518, pci_quirk_mf_endpoint_acs },
4622 { PCI_VENDOR_ID_INTEL, 0x1526, pci_quirk_mf_endpoint_acs },
4623 /* 82575 */
4624 { PCI_VENDOR_ID_INTEL, 0x10A7, pci_quirk_mf_endpoint_acs },
4625 { PCI_VENDOR_ID_INTEL, 0x10A9, pci_quirk_mf_endpoint_acs },
4626 { PCI_VENDOR_ID_INTEL, 0x10D6, pci_quirk_mf_endpoint_acs },
4627 /* I350 */
4628 { PCI_VENDOR_ID_INTEL, 0x1521, pci_quirk_mf_endpoint_acs },
4629 { PCI_VENDOR_ID_INTEL, 0x1522, pci_quirk_mf_endpoint_acs },
4630 { PCI_VENDOR_ID_INTEL, 0x1523, pci_quirk_mf_endpoint_acs },
4631 { PCI_VENDOR_ID_INTEL, 0x1524, pci_quirk_mf_endpoint_acs },
4632 /* 82571 (Quads omitted due to non-ACS switch) */
4633 { PCI_VENDOR_ID_INTEL, 0x105E, pci_quirk_mf_endpoint_acs },
4634 { PCI_VENDOR_ID_INTEL, 0x105F, pci_quirk_mf_endpoint_acs },
4635 { PCI_VENDOR_ID_INTEL, 0x1060, pci_quirk_mf_endpoint_acs },
4636 { PCI_VENDOR_ID_INTEL, 0x10D9, pci_quirk_mf_endpoint_acs },
4637 /* I219 */
4638 { PCI_VENDOR_ID_INTEL, 0x15b7, pci_quirk_mf_endpoint_acs },
4639 { PCI_VENDOR_ID_INTEL, 0x15b8, pci_quirk_mf_endpoint_acs },
4640 /* QCOM QDF2xxx root ports */
4641 { PCI_VENDOR_ID_QCOM, 0x0400, pci_quirk_qcom_rp_acs },
4642 { PCI_VENDOR_ID_QCOM, 0x0401, pci_quirk_qcom_rp_acs },
4643 /* HXT SD4800 root ports. The ACS design is same as QCOM QDF2xxx */
4644 { PCI_VENDOR_ID_HXT, 0x0401, pci_quirk_qcom_rp_acs },
4645 /* Intel PCH root ports */
4646 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_quirk_intel_pch_acs },
4647 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_quirk_intel_spt_pch_acs },
4648 { 0x19a2, 0x710, pci_quirk_mf_endpoint_acs }, /* Emulex BE3-R */
4649 { 0x10df, 0x720, pci_quirk_mf_endpoint_acs }, /* Emulex Skyhawk-R */
4650 /* Cavium ThunderX */
4651 { PCI_VENDOR_ID_CAVIUM, PCI_ANY_ID, pci_quirk_cavium_acs },
4652 /* APM X-Gene */
4653 { PCI_VENDOR_ID_AMCC, 0xE004, pci_quirk_xgene_acs },
4654 /* Ampere Computing */
4655 { PCI_VENDOR_ID_AMPERE, 0xE005, pci_quirk_xgene_acs },
4656 { PCI_VENDOR_ID_AMPERE, 0xE006, pci_quirk_xgene_acs },
4657 { PCI_VENDOR_ID_AMPERE, 0xE007, pci_quirk_xgene_acs },
4658 { PCI_VENDOR_ID_AMPERE, 0xE008, pci_quirk_xgene_acs },
4659 { PCI_VENDOR_ID_AMPERE, 0xE009, pci_quirk_xgene_acs },
4660 { PCI_VENDOR_ID_AMPERE, 0xE00A, pci_quirk_xgene_acs },
4661 { PCI_VENDOR_ID_AMPERE, 0xE00B, pci_quirk_xgene_acs },
4662 { PCI_VENDOR_ID_AMPERE, 0xE00C, pci_quirk_xgene_acs },
4663 { PCI_VENDOR_ID_BROADCOM, 0xD714, pci_quirk_brcm_acs },
4664 /* Amazon Annapurna Labs */
4665 { PCI_VENDOR_ID_AMAZON_ANNAPURNA_LABS, 0x0031, pci_quirk_al_acs },
4666 { 0 }
4667};
4668
4669int pci_dev_specific_acs_enabled(struct pci_dev *dev, u16 acs_flags)
4670{
4671 const struct pci_dev_acs_enabled *i;
4672 int ret;
4673
4674 /*
4675 * Allow devices that do not expose standard PCIe ACS capabilities
4676 * or control to indicate their support here. Multi-function express
4677 * devices which do not allow internal peer-to-peer between functions,
4678 * but do not implement PCIe ACS may wish to return true here.
4679 */
4680 for (i = pci_dev_acs_enabled; i->acs_enabled; i++) {
4681 if ((i->vendor == dev->vendor ||
4682 i->vendor == (u16)PCI_ANY_ID) &&
4683 (i->device == dev->device ||
4684 i->device == (u16)PCI_ANY_ID)) {
4685 ret = i->acs_enabled(dev, acs_flags);
4686 if (ret >= 0)
4687 return ret;
4688 }
4689 }
4690
4691 return -ENOTTY;
4692}
4693
4694/* Config space offset of Root Complex Base Address register */
4695#define INTEL_LPC_RCBA_REG 0xf0
4696/* 31:14 RCBA address */
4697#define INTEL_LPC_RCBA_MASK 0xffffc000
4698/* RCBA Enable */
4699#define INTEL_LPC_RCBA_ENABLE (1 << 0)
4700
4701/* Backbone Scratch Pad Register */
4702#define INTEL_BSPR_REG 0x1104
4703/* Backbone Peer Non-Posted Disable */
4704#define INTEL_BSPR_REG_BPNPD (1 << 8)
4705/* Backbone Peer Posted Disable */
4706#define INTEL_BSPR_REG_BPPD (1 << 9)
4707
4708/* Upstream Peer Decode Configuration Register */
4709#define INTEL_UPDCR_REG 0x1114
4710/* 5:0 Peer Decode Enable bits */
4711#define INTEL_UPDCR_REG_MASK 0x3f
4712
4713static int pci_quirk_enable_intel_lpc_acs(struct pci_dev *dev)
4714{
4715 u32 rcba, bspr, updcr;
4716 void __iomem *rcba_mem;
4717
4718 /*
4719 * Read the RCBA register from the LPC (D31:F0). PCH root ports
4720 * are D28:F* and therefore get probed before LPC, thus we can't
4721 * use pci_get_slot()/pci_read_config_dword() here.
4722 */
4723 pci_bus_read_config_dword(dev->bus, PCI_DEVFN(31, 0),
4724 INTEL_LPC_RCBA_REG, &rcba);
4725 if (!(rcba & INTEL_LPC_RCBA_ENABLE))
4726 return -EINVAL;
4727
4728 rcba_mem = ioremap_nocache(rcba & INTEL_LPC_RCBA_MASK,
4729 PAGE_ALIGN(INTEL_UPDCR_REG));
4730 if (!rcba_mem)
4731 return -ENOMEM;
4732
4733 /*
4734 * The BSPR can disallow peer cycles, but it's set by soft strap and
4735 * therefore read-only. If both posted and non-posted peer cycles are
4736 * disallowed, we're ok. If either are allowed, then we need to use
4737 * the UPDCR to disable peer decodes for each port. This provides the
4738 * PCIe ACS equivalent of PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF
4739 */
4740 bspr = readl(rcba_mem + INTEL_BSPR_REG);
4741 bspr &= INTEL_BSPR_REG_BPNPD | INTEL_BSPR_REG_BPPD;
4742 if (bspr != (INTEL_BSPR_REG_BPNPD | INTEL_BSPR_REG_BPPD)) {
4743 updcr = readl(rcba_mem + INTEL_UPDCR_REG);
4744 if (updcr & INTEL_UPDCR_REG_MASK) {
4745 pci_info(dev, "Disabling UPDCR peer decodes\n");
4746 updcr &= ~INTEL_UPDCR_REG_MASK;
4747 writel(updcr, rcba_mem + INTEL_UPDCR_REG);
4748 }
4749 }
4750
4751 iounmap(rcba_mem);
4752 return 0;
4753}
4754
4755/* Miscellaneous Port Configuration register */
4756#define INTEL_MPC_REG 0xd8
4757/* MPC: Invalid Receive Bus Number Check Enable */
4758#define INTEL_MPC_REG_IRBNCE (1 << 26)
4759
4760static void pci_quirk_enable_intel_rp_mpc_acs(struct pci_dev *dev)
4761{
4762 u32 mpc;
4763
4764 /*
4765 * When enabled, the IRBNCE bit of the MPC register enables the
4766 * equivalent of PCI ACS Source Validation (PCI_ACS_SV), which
4767 * ensures that requester IDs fall within the bus number range
4768 * of the bridge. Enable if not already.
4769 */
4770 pci_read_config_dword(dev, INTEL_MPC_REG, &mpc);
4771 if (!(mpc & INTEL_MPC_REG_IRBNCE)) {
4772 pci_info(dev, "Enabling MPC IRBNCE\n");
4773 mpc |= INTEL_MPC_REG_IRBNCE;
4774 pci_write_config_word(dev, INTEL_MPC_REG, mpc);
4775 }
4776}
4777
4778static int pci_quirk_enable_intel_pch_acs(struct pci_dev *dev)
4779{
4780 if (!pci_quirk_intel_pch_acs_match(dev))
4781 return -ENOTTY;
4782
4783 if (pci_quirk_enable_intel_lpc_acs(dev)) {
4784 pci_warn(dev, "Failed to enable Intel PCH ACS quirk\n");
4785 return 0;
4786 }
4787
4788 pci_quirk_enable_intel_rp_mpc_acs(dev);
4789
4790 dev->dev_flags |= PCI_DEV_FLAGS_ACS_ENABLED_QUIRK;
4791
4792 pci_info(dev, "Intel PCH root port ACS workaround enabled\n");
4793
4794 return 0;
4795}
4796
4797static int pci_quirk_enable_intel_spt_pch_acs(struct pci_dev *dev)
4798{
4799 int pos;
4800 u32 cap, ctrl;
4801
4802 if (!pci_quirk_intel_spt_pch_acs_match(dev))
4803 return -ENOTTY;
4804
4805 pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ACS);
4806 if (!pos)
4807 return -ENOTTY;
4808
4809 pci_read_config_dword(dev, pos + PCI_ACS_CAP, &cap);
4810 pci_read_config_dword(dev, pos + INTEL_SPT_ACS_CTRL, &ctrl);
4811
4812 ctrl |= (cap & PCI_ACS_SV);
4813 ctrl |= (cap & PCI_ACS_RR);
4814 ctrl |= (cap & PCI_ACS_CR);
4815 ctrl |= (cap & PCI_ACS_UF);
4816
4817 pci_write_config_dword(dev, pos + INTEL_SPT_ACS_CTRL, ctrl);
4818
4819 pci_info(dev, "Intel SPT PCH root port ACS workaround enabled\n");
4820
4821 return 0;
4822}
4823
4824static int pci_quirk_disable_intel_spt_pch_acs_redir(struct pci_dev *dev)
4825{
4826 int pos;
4827 u32 cap, ctrl;
4828
4829 if (!pci_quirk_intel_spt_pch_acs_match(dev))
4830 return -ENOTTY;
4831
4832 pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ACS);
4833 if (!pos)
4834 return -ENOTTY;
4835
4836 pci_read_config_dword(dev, pos + PCI_ACS_CAP, &cap);
4837 pci_read_config_dword(dev, pos + INTEL_SPT_ACS_CTRL, &ctrl);
4838
4839 ctrl &= ~(PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_EC);
4840
4841 pci_write_config_dword(dev, pos + INTEL_SPT_ACS_CTRL, ctrl);
4842
4843 pci_info(dev, "Intel SPT PCH root port workaround: disabled ACS redirect\n");
4844
4845 return 0;
4846}
4847
4848static const struct pci_dev_acs_ops {
4849 u16 vendor;
4850 u16 device;
4851 int (*enable_acs)(struct pci_dev *dev);
4852 int (*disable_acs_redir)(struct pci_dev *dev);
4853} pci_dev_acs_ops[] = {
4854 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID,
4855 .enable_acs = pci_quirk_enable_intel_pch_acs,
4856 },
4857 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID,
4858 .enable_acs = pci_quirk_enable_intel_spt_pch_acs,
4859 .disable_acs_redir = pci_quirk_disable_intel_spt_pch_acs_redir,
4860 },
4861};
4862
4863int pci_dev_specific_enable_acs(struct pci_dev *dev)
4864{
4865 const struct pci_dev_acs_ops *p;
4866 int i, ret;
4867
4868 for (i = 0; i < ARRAY_SIZE(pci_dev_acs_ops); i++) {
4869 p = &pci_dev_acs_ops[i];
4870 if ((p->vendor == dev->vendor ||
4871 p->vendor == (u16)PCI_ANY_ID) &&
4872 (p->device == dev->device ||
4873 p->device == (u16)PCI_ANY_ID) &&
4874 p->enable_acs) {
4875 ret = p->enable_acs(dev);
4876 if (ret >= 0)
4877 return ret;
4878 }
4879 }
4880
4881 return -ENOTTY;
4882}
4883
4884int pci_dev_specific_disable_acs_redir(struct pci_dev *dev)
4885{
4886 const struct pci_dev_acs_ops *p;
4887 int i, ret;
4888
4889 for (i = 0; i < ARRAY_SIZE(pci_dev_acs_ops); i++) {
4890 p = &pci_dev_acs_ops[i];
4891 if ((p->vendor == dev->vendor ||
4892 p->vendor == (u16)PCI_ANY_ID) &&
4893 (p->device == dev->device ||
4894 p->device == (u16)PCI_ANY_ID) &&
4895 p->disable_acs_redir) {
4896 ret = p->disable_acs_redir(dev);
4897 if (ret >= 0)
4898 return ret;
4899 }
4900 }
4901
4902 return -ENOTTY;
4903}
4904
4905/*
4906 * The PCI capabilities list for Intel DH895xCC VFs (device ID 0x0443) with
4907 * QuickAssist Technology (QAT) is prematurely terminated in hardware. The
4908 * Next Capability pointer in the MSI Capability Structure should point to
4909 * the PCIe Capability Structure but is incorrectly hardwired as 0 terminating
4910 * the list.
4911 */
4912static void quirk_intel_qat_vf_cap(struct pci_dev *pdev)
4913{
4914 int pos, i = 0;
4915 u8 next_cap;
4916 u16 reg16, *cap;
4917 struct pci_cap_saved_state *state;
4918
4919 /* Bail if the hardware bug is fixed */
4920 if (pdev->pcie_cap || pci_find_capability(pdev, PCI_CAP_ID_EXP))
4921 return;
4922
4923 /* Bail if MSI Capability Structure is not found for some reason */
4924 pos = pci_find_capability(pdev, PCI_CAP_ID_MSI);
4925 if (!pos)
4926 return;
4927
4928 /*
4929 * Bail if Next Capability pointer in the MSI Capability Structure
4930 * is not the expected incorrect 0x00.
4931 */
4932 pci_read_config_byte(pdev, pos + 1, &next_cap);
4933 if (next_cap)
4934 return;
4935
4936 /*
4937 * PCIe Capability Structure is expected to be at 0x50 and should
4938 * terminate the list (Next Capability pointer is 0x00). Verify
4939 * Capability Id and Next Capability pointer is as expected.
4940 * Open-code some of set_pcie_port_type() and pci_cfg_space_size_ext()
4941 * to correctly set kernel data structures which have already been
4942 * set incorrectly due to the hardware bug.
4943 */
4944 pos = 0x50;
4945 pci_read_config_word(pdev, pos, ®16);
4946 if (reg16 == (0x0000 | PCI_CAP_ID_EXP)) {
4947 u32 status;
4948#ifndef PCI_EXP_SAVE_REGS
4949#define PCI_EXP_SAVE_REGS 7
4950#endif
4951 int size = PCI_EXP_SAVE_REGS * sizeof(u16);
4952
4953 pdev->pcie_cap = pos;
4954 pci_read_config_word(pdev, pos + PCI_EXP_FLAGS, ®16);
4955 pdev->pcie_flags_reg = reg16;
4956 pci_read_config_word(pdev, pos + PCI_EXP_DEVCAP, ®16);
4957 pdev->pcie_mpss = reg16 & PCI_EXP_DEVCAP_PAYLOAD;
4958
4959 pdev->cfg_size = PCI_CFG_SPACE_EXP_SIZE;
4960 if (pci_read_config_dword(pdev, PCI_CFG_SPACE_SIZE, &status) !=
4961 PCIBIOS_SUCCESSFUL || (status == 0xffffffff))
4962 pdev->cfg_size = PCI_CFG_SPACE_SIZE;
4963
4964 if (pci_find_saved_cap(pdev, PCI_CAP_ID_EXP))
4965 return;
4966
4967 /* Save PCIe cap */
4968 state = kzalloc(sizeof(*state) + size, GFP_KERNEL);
4969 if (!state)
4970 return;
4971
4972 state->cap.cap_nr = PCI_CAP_ID_EXP;
4973 state->cap.cap_extended = 0;
4974 state->cap.size = size;
4975 cap = (u16 *)&state->cap.data[0];
4976 pcie_capability_read_word(pdev, PCI_EXP_DEVCTL, &cap[i++]);
4977 pcie_capability_read_word(pdev, PCI_EXP_LNKCTL, &cap[i++]);
4978 pcie_capability_read_word(pdev, PCI_EXP_SLTCTL, &cap[i++]);
4979 pcie_capability_read_word(pdev, PCI_EXP_RTCTL, &cap[i++]);
4980 pcie_capability_read_word(pdev, PCI_EXP_DEVCTL2, &cap[i++]);
4981 pcie_capability_read_word(pdev, PCI_EXP_LNKCTL2, &cap[i++]);
4982 pcie_capability_read_word(pdev, PCI_EXP_SLTCTL2, &cap[i++]);
4983 hlist_add_head(&state->next, &pdev->saved_cap_space);
4984 }
4985}
4986DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x443, quirk_intel_qat_vf_cap);
4987
4988/* FLR may cause some 82579 devices to hang */
4989static void quirk_intel_no_flr(struct pci_dev *dev)
4990{
4991 dev->dev_flags |= PCI_DEV_FLAGS_NO_FLR_RESET;
4992}
4993DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1502, quirk_intel_no_flr);
4994DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1503, quirk_intel_no_flr);
4995
4996static void quirk_no_ext_tags(struct pci_dev *pdev)
4997{
4998 struct pci_host_bridge *bridge = pci_find_host_bridge(pdev->bus);
4999
5000 if (!bridge)
5001 return;
5002
5003 bridge->no_ext_tags = 1;
5004 pci_info(pdev, "disabling Extended Tags (this device can't handle them)\n");
5005
5006 pci_walk_bus(bridge->bus, pci_configure_extended_tags, NULL);
5007}
5008DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0132, quirk_no_ext_tags);
5009DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0140, quirk_no_ext_tags);
5010DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0141, quirk_no_ext_tags);
5011DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0142, quirk_no_ext_tags);
5012DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0144, quirk_no_ext_tags);
5013DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0420, quirk_no_ext_tags);
5014DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0422, quirk_no_ext_tags);
5015
5016#ifdef CONFIG_PCI_ATS
5017/*
5018 * Some devices have a broken ATS implementation causing IOMMU stalls.
5019 * Don't use ATS for those devices.
5020 */
5021static void quirk_no_ats(struct pci_dev *pdev)
5022{
5023 pci_info(pdev, "disabling ATS (broken on this device)\n");
5024 pdev->ats_cap = 0;
5025}
5026
5027/* AMD Stoney platform GPU */
5028DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x98e4, quirk_no_ats);
5029DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x6900, quirk_no_ats);
5030#endif /* CONFIG_PCI_ATS */
5031
5032/* Freescale PCIe doesn't support MSI in RC mode */
5033static void quirk_fsl_no_msi(struct pci_dev *pdev)
5034{
5035 if (pci_pcie_type(pdev) == PCI_EXP_TYPE_ROOT_PORT)
5036 pdev->no_msi = 1;
5037}
5038DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_FREESCALE, PCI_ANY_ID, quirk_fsl_no_msi);
5039
5040/*
5041 * Although not allowed by the spec, some multi-function devices have
5042 * dependencies of one function (consumer) on another (supplier). For the
5043 * consumer to work in D0, the supplier must also be in D0. Create a
5044 * device link from the consumer to the supplier to enforce this
5045 * dependency. Runtime PM is allowed by default on the consumer to prevent
5046 * it from permanently keeping the supplier awake.
5047 */
5048static void pci_create_device_link(struct pci_dev *pdev, unsigned int consumer,
5049 unsigned int supplier, unsigned int class,
5050 unsigned int class_shift)
5051{
5052 struct pci_dev *supplier_pdev;
5053
5054 if (PCI_FUNC(pdev->devfn) != consumer)
5055 return;
5056
5057 supplier_pdev = pci_get_domain_bus_and_slot(pci_domain_nr(pdev->bus),
5058 pdev->bus->number,
5059 PCI_DEVFN(PCI_SLOT(pdev->devfn), supplier));
5060 if (!supplier_pdev || (supplier_pdev->class >> class_shift) != class) {
5061 pci_dev_put(supplier_pdev);
5062 return;
5063 }
5064
5065 if (device_link_add(&pdev->dev, &supplier_pdev->dev,
5066 DL_FLAG_STATELESS | DL_FLAG_PM_RUNTIME))
5067 pci_info(pdev, "D0 power state depends on %s\n",
5068 pci_name(supplier_pdev));
5069 else
5070 pci_err(pdev, "Cannot enforce power dependency on %s\n",
5071 pci_name(supplier_pdev));
5072
5073 pm_runtime_allow(&pdev->dev);
5074 pci_dev_put(supplier_pdev);
5075}
5076
5077/*
5078 * Create device link for GPUs with integrated HDA controller for streaming
5079 * audio to attached displays.
5080 */
5081static void quirk_gpu_hda(struct pci_dev *hda)
5082{
5083 pci_create_device_link(hda, 1, 0, PCI_BASE_CLASS_DISPLAY, 16);
5084}
5085DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_ATI, PCI_ANY_ID,
5086 PCI_CLASS_MULTIMEDIA_HD_AUDIO, 8, quirk_gpu_hda);
5087DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_AMD, PCI_ANY_ID,
5088 PCI_CLASS_MULTIMEDIA_HD_AUDIO, 8, quirk_gpu_hda);
5089DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
5090 PCI_CLASS_MULTIMEDIA_HD_AUDIO, 8, quirk_gpu_hda);
5091
5092/*
5093 * Create device link for NVIDIA GPU with integrated USB xHCI Host
5094 * controller to VGA.
5095 */
5096static void quirk_gpu_usb(struct pci_dev *usb)
5097{
5098 pci_create_device_link(usb, 2, 0, PCI_BASE_CLASS_DISPLAY, 16);
5099}
5100DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
5101 PCI_CLASS_SERIAL_USB, 8, quirk_gpu_usb);
5102
5103/*
5104 * Create device link for NVIDIA GPU with integrated Type-C UCSI controller
5105 * to VGA. Currently there is no class code defined for UCSI device over PCI
5106 * so using UNKNOWN class for now and it will be updated when UCSI
5107 * over PCI gets a class code.
5108 */
5109#define PCI_CLASS_SERIAL_UNKNOWN 0x0c80
5110static void quirk_gpu_usb_typec_ucsi(struct pci_dev *ucsi)
5111{
5112 pci_create_device_link(ucsi, 3, 0, PCI_BASE_CLASS_DISPLAY, 16);
5113}
5114DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
5115 PCI_CLASS_SERIAL_UNKNOWN, 8,
5116 quirk_gpu_usb_typec_ucsi);
5117
5118/*
5119 * Enable the NVIDIA GPU integrated HDA controller if the BIOS left it
5120 * disabled. https://devtalk.nvidia.com/default/topic/1024022
5121 */
5122static void quirk_nvidia_hda(struct pci_dev *gpu)
5123{
5124 u8 hdr_type;
5125 u32 val;
5126
5127 /* There was no integrated HDA controller before MCP89 */
5128 if (gpu->device < PCI_DEVICE_ID_NVIDIA_GEFORCE_320M)
5129 return;
5130
5131 /* Bit 25 at offset 0x488 enables the HDA controller */
5132 pci_read_config_dword(gpu, 0x488, &val);
5133 if (val & BIT(25))
5134 return;
5135
5136 pci_info(gpu, "Enabling HDA controller\n");
5137 pci_write_config_dword(gpu, 0x488, val | BIT(25));
5138
5139 /* The GPU becomes a multi-function device when the HDA is enabled */
5140 pci_read_config_byte(gpu, PCI_HEADER_TYPE, &hdr_type);
5141 gpu->multifunction = !!(hdr_type & 0x80);
5142}
5143DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
5144 PCI_BASE_CLASS_DISPLAY, 16, quirk_nvidia_hda);
5145DECLARE_PCI_FIXUP_CLASS_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
5146 PCI_BASE_CLASS_DISPLAY, 16, quirk_nvidia_hda);
5147
5148/*
5149 * Some IDT switches incorrectly flag an ACS Source Validation error on
5150 * completions for config read requests even though PCIe r4.0, sec
5151 * 6.12.1.1, says that completions are never affected by ACS Source
5152 * Validation. Here's the text of IDT 89H32H8G3-YC, erratum #36:
5153 *
5154 * Item #36 - Downstream port applies ACS Source Validation to Completions
5155 * Section 6.12.1.1 of the PCI Express Base Specification 3.1 states that
5156 * completions are never affected by ACS Source Validation. However,
5157 * completions received by a downstream port of the PCIe switch from a
5158 * device that has not yet captured a PCIe bus number are incorrectly
5159 * dropped by ACS Source Validation by the switch downstream port.
5160 *
5161 * The workaround suggested by IDT is to issue a config write to the
5162 * downstream device before issuing the first config read. This allows the
5163 * downstream device to capture its bus and device numbers (see PCIe r4.0,
5164 * sec 2.2.9), thus avoiding the ACS error on the completion.
5165 *
5166 * However, we don't know when the device is ready to accept the config
5167 * write, so we do config reads until we receive a non-Config Request Retry
5168 * Status, then do the config write.
5169 *
5170 * To avoid hitting the erratum when doing the config reads, we disable ACS
5171 * SV around this process.
5172 */
5173int pci_idt_bus_quirk(struct pci_bus *bus, int devfn, u32 *l, int timeout)
5174{
5175 int pos;
5176 u16 ctrl = 0;
5177 bool found;
5178 struct pci_dev *bridge = bus->self;
5179
5180 pos = pci_find_ext_capability(bridge, PCI_EXT_CAP_ID_ACS);
5181
5182 /* Disable ACS SV before initial config reads */
5183 if (pos) {
5184 pci_read_config_word(bridge, pos + PCI_ACS_CTRL, &ctrl);
5185 if (ctrl & PCI_ACS_SV)
5186 pci_write_config_word(bridge, pos + PCI_ACS_CTRL,
5187 ctrl & ~PCI_ACS_SV);
5188 }
5189
5190 found = pci_bus_generic_read_dev_vendor_id(bus, devfn, l, timeout);
5191
5192 /* Write Vendor ID (read-only) so the endpoint latches its bus/dev */
5193 if (found)
5194 pci_bus_write_config_word(bus, devfn, PCI_VENDOR_ID, 0);
5195
5196 /* Re-enable ACS_SV if it was previously enabled */
5197 if (ctrl & PCI_ACS_SV)
5198 pci_write_config_word(bridge, pos + PCI_ACS_CTRL, ctrl);
5199
5200 return found;
5201}
5202
5203/*
5204 * Microsemi Switchtec NTB uses devfn proxy IDs to move TLPs between
5205 * NT endpoints via the internal switch fabric. These IDs replace the
5206 * originating requestor ID TLPs which access host memory on peer NTB
5207 * ports. Therefore, all proxy IDs must be aliased to the NTB device
5208 * to permit access when the IOMMU is turned on.
5209 */
5210static void quirk_switchtec_ntb_dma_alias(struct pci_dev *pdev)
5211{
5212 void __iomem *mmio;
5213 struct ntb_info_regs __iomem *mmio_ntb;
5214 struct ntb_ctrl_regs __iomem *mmio_ctrl;
5215 u64 partition_map;
5216 u8 partition;
5217 int pp;
5218
5219 if (pci_enable_device(pdev)) {
5220 pci_err(pdev, "Cannot enable Switchtec device\n");
5221 return;
5222 }
5223
5224 mmio = pci_iomap(pdev, 0, 0);
5225 if (mmio == NULL) {
5226 pci_disable_device(pdev);
5227 pci_err(pdev, "Cannot iomap Switchtec device\n");
5228 return;
5229 }
5230
5231 pci_info(pdev, "Setting Switchtec proxy ID aliases\n");
5232
5233 mmio_ntb = mmio + SWITCHTEC_GAS_NTB_OFFSET;
5234 mmio_ctrl = (void __iomem *) mmio_ntb + SWITCHTEC_NTB_REG_CTRL_OFFSET;
5235
5236 partition = ioread8(&mmio_ntb->partition_id);
5237
5238 partition_map = ioread32(&mmio_ntb->ep_map);
5239 partition_map |= ((u64) ioread32(&mmio_ntb->ep_map + 4)) << 32;
5240 partition_map &= ~(1ULL << partition);
5241
5242 for (pp = 0; pp < (sizeof(partition_map) * 8); pp++) {
5243 struct ntb_ctrl_regs __iomem *mmio_peer_ctrl;
5244 u32 table_sz = 0;
5245 int te;
5246
5247 if (!(partition_map & (1ULL << pp)))
5248 continue;
5249
5250 pci_dbg(pdev, "Processing partition %d\n", pp);
5251
5252 mmio_peer_ctrl = &mmio_ctrl[pp];
5253
5254 table_sz = ioread16(&mmio_peer_ctrl->req_id_table_size);
5255 if (!table_sz) {
5256 pci_warn(pdev, "Partition %d table_sz 0\n", pp);
5257 continue;
5258 }
5259
5260 if (table_sz > 512) {
5261 pci_warn(pdev,
5262 "Invalid Switchtec partition %d table_sz %d\n",
5263 pp, table_sz);
5264 continue;
5265 }
5266
5267 for (te = 0; te < table_sz; te++) {
5268 u32 rid_entry;
5269 u8 devfn;
5270
5271 rid_entry = ioread32(&mmio_peer_ctrl->req_id_table[te]);
5272 devfn = (rid_entry >> 1) & 0xFF;
5273 pci_dbg(pdev,
5274 "Aliasing Partition %d Proxy ID %02x.%d\n",
5275 pp, PCI_SLOT(devfn), PCI_FUNC(devfn));
5276 pci_add_dma_alias(pdev, devfn);
5277 }
5278 }
5279
5280 pci_iounmap(pdev, mmio);
5281 pci_disable_device(pdev);
5282}
5283#define SWITCHTEC_QUIRK(vid) \
5284 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_MICROSEMI, vid, \
5285 PCI_CLASS_BRIDGE_OTHER, 8, quirk_switchtec_ntb_dma_alias)
5286
5287SWITCHTEC_QUIRK(0x8531); /* PFX 24xG3 */
5288SWITCHTEC_QUIRK(0x8532); /* PFX 32xG3 */
5289SWITCHTEC_QUIRK(0x8533); /* PFX 48xG3 */
5290SWITCHTEC_QUIRK(0x8534); /* PFX 64xG3 */
5291SWITCHTEC_QUIRK(0x8535); /* PFX 80xG3 */
5292SWITCHTEC_QUIRK(0x8536); /* PFX 96xG3 */
5293SWITCHTEC_QUIRK(0x8541); /* PSX 24xG3 */
5294SWITCHTEC_QUIRK(0x8542); /* PSX 32xG3 */
5295SWITCHTEC_QUIRK(0x8543); /* PSX 48xG3 */
5296SWITCHTEC_QUIRK(0x8544); /* PSX 64xG3 */
5297SWITCHTEC_QUIRK(0x8545); /* PSX 80xG3 */
5298SWITCHTEC_QUIRK(0x8546); /* PSX 96xG3 */
5299SWITCHTEC_QUIRK(0x8551); /* PAX 24XG3 */
5300SWITCHTEC_QUIRK(0x8552); /* PAX 32XG3 */
5301SWITCHTEC_QUIRK(0x8553); /* PAX 48XG3 */
5302SWITCHTEC_QUIRK(0x8554); /* PAX 64XG3 */
5303SWITCHTEC_QUIRK(0x8555); /* PAX 80XG3 */
5304SWITCHTEC_QUIRK(0x8556); /* PAX 96XG3 */
5305SWITCHTEC_QUIRK(0x8561); /* PFXL 24XG3 */
5306SWITCHTEC_QUIRK(0x8562); /* PFXL 32XG3 */
5307SWITCHTEC_QUIRK(0x8563); /* PFXL 48XG3 */
5308SWITCHTEC_QUIRK(0x8564); /* PFXL 64XG3 */
5309SWITCHTEC_QUIRK(0x8565); /* PFXL 80XG3 */
5310SWITCHTEC_QUIRK(0x8566); /* PFXL 96XG3 */
5311SWITCHTEC_QUIRK(0x8571); /* PFXI 24XG3 */
5312SWITCHTEC_QUIRK(0x8572); /* PFXI 32XG3 */
5313SWITCHTEC_QUIRK(0x8573); /* PFXI 48XG3 */
5314SWITCHTEC_QUIRK(0x8574); /* PFXI 64XG3 */
5315SWITCHTEC_QUIRK(0x8575); /* PFXI 80XG3 */
5316SWITCHTEC_QUIRK(0x8576); /* PFXI 96XG3 */
5317
5318/*
5319 * On Lenovo Thinkpad P50 SKUs with a Nvidia Quadro M1000M, the BIOS does
5320 * not always reset the secondary Nvidia GPU between reboots if the system
5321 * is configured to use Hybrid Graphics mode. This results in the GPU
5322 * being left in whatever state it was in during the *previous* boot, which
5323 * causes spurious interrupts from the GPU, which in turn causes us to
5324 * disable the wrong IRQ and end up breaking the touchpad. Unsurprisingly,
5325 * this also completely breaks nouveau.
5326 *
5327 * Luckily, it seems a simple reset of the Nvidia GPU brings it back to a
5328 * clean state and fixes all these issues.
5329 *
5330 * When the machine is configured in Dedicated display mode, the issue
5331 * doesn't occur. Fortunately the GPU advertises NoReset+ when in this
5332 * mode, so we can detect that and avoid resetting it.
5333 */
5334static void quirk_reset_lenovo_thinkpad_p50_nvgpu(struct pci_dev *pdev)
5335{
5336 void __iomem *map;
5337 int ret;
5338
5339 if (pdev->subsystem_vendor != PCI_VENDOR_ID_LENOVO ||
5340 pdev->subsystem_device != 0x222e ||
5341 !pdev->reset_fn)
5342 return;
5343
5344 if (pci_enable_device_mem(pdev))
5345 return;
5346
5347 /*
5348 * Based on nvkm_device_ctor() in
5349 * drivers/gpu/drm/nouveau/nvkm/engine/device/base.c
5350 */
5351 map = pci_iomap(pdev, 0, 0x23000);
5352 if (!map) {
5353 pci_err(pdev, "Can't map MMIO space\n");
5354 goto out_disable;
5355 }
5356
5357 /*
5358 * Make sure the GPU looks like it's been POSTed before resetting
5359 * it.
5360 */
5361 if (ioread32(map + 0x2240c) & 0x2) {
5362 pci_info(pdev, FW_BUG "GPU left initialized by EFI, resetting\n");
5363 ret = pci_reset_bus(pdev);
5364 if (ret < 0)
5365 pci_err(pdev, "Failed to reset GPU: %d\n", ret);
5366 }
5367
5368 iounmap(map);
5369out_disable:
5370 pci_disable_device(pdev);
5371}
5372DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_NVIDIA, 0x13b1,
5373 PCI_CLASS_DISPLAY_VGA, 8,
5374 quirk_reset_lenovo_thinkpad_p50_nvgpu);
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * This file contains work-arounds for many known PCI hardware bugs.
4 * Devices present only on certain architectures (host bridges et cetera)
5 * should be handled in arch-specific code.
6 *
7 * Note: any quirks for hotpluggable devices must _NOT_ be declared __init.
8 *
9 * Copyright (c) 1999 Martin Mares <mj@ucw.cz>
10 *
11 * Init/reset quirks for USB host controllers should be in the USB quirks
12 * file, where their drivers can use them.
13 */
14
15#include <linux/types.h>
16#include <linux/kernel.h>
17#include <linux/export.h>
18#include <linux/pci.h>
19#include <linux/init.h>
20#include <linux/delay.h>
21#include <linux/acpi.h>
22#include <linux/dmi.h>
23#include <linux/ioport.h>
24#include <linux/sched.h>
25#include <linux/ktime.h>
26#include <linux/mm.h>
27#include <linux/nvme.h>
28#include <linux/platform_data/x86/apple.h>
29#include <linux/pm_runtime.h>
30#include <linux/suspend.h>
31#include <linux/switchtec.h>
32#include <asm/dma.h> /* isa_dma_bridge_buggy */
33#include "pci.h"
34
35static ktime_t fixup_debug_start(struct pci_dev *dev,
36 void (*fn)(struct pci_dev *dev))
37{
38 if (initcall_debug)
39 pci_info(dev, "calling %pS @ %i\n", fn, task_pid_nr(current));
40
41 return ktime_get();
42}
43
44static void fixup_debug_report(struct pci_dev *dev, ktime_t calltime,
45 void (*fn)(struct pci_dev *dev))
46{
47 ktime_t delta, rettime;
48 unsigned long long duration;
49
50 rettime = ktime_get();
51 delta = ktime_sub(rettime, calltime);
52 duration = (unsigned long long) ktime_to_ns(delta) >> 10;
53 if (initcall_debug || duration > 10000)
54 pci_info(dev, "%pS took %lld usecs\n", fn, duration);
55}
56
57static void pci_do_fixups(struct pci_dev *dev, struct pci_fixup *f,
58 struct pci_fixup *end)
59{
60 ktime_t calltime;
61
62 for (; f < end; f++)
63 if ((f->class == (u32) (dev->class >> f->class_shift) ||
64 f->class == (u32) PCI_ANY_ID) &&
65 (f->vendor == dev->vendor ||
66 f->vendor == (u16) PCI_ANY_ID) &&
67 (f->device == dev->device ||
68 f->device == (u16) PCI_ANY_ID)) {
69 void (*hook)(struct pci_dev *dev);
70#ifdef CONFIG_HAVE_ARCH_PREL32_RELOCATIONS
71 hook = offset_to_ptr(&f->hook_offset);
72#else
73 hook = f->hook;
74#endif
75 calltime = fixup_debug_start(dev, hook);
76 hook(dev);
77 fixup_debug_report(dev, calltime, hook);
78 }
79}
80
81extern struct pci_fixup __start_pci_fixups_early[];
82extern struct pci_fixup __end_pci_fixups_early[];
83extern struct pci_fixup __start_pci_fixups_header[];
84extern struct pci_fixup __end_pci_fixups_header[];
85extern struct pci_fixup __start_pci_fixups_final[];
86extern struct pci_fixup __end_pci_fixups_final[];
87extern struct pci_fixup __start_pci_fixups_enable[];
88extern struct pci_fixup __end_pci_fixups_enable[];
89extern struct pci_fixup __start_pci_fixups_resume[];
90extern struct pci_fixup __end_pci_fixups_resume[];
91extern struct pci_fixup __start_pci_fixups_resume_early[];
92extern struct pci_fixup __end_pci_fixups_resume_early[];
93extern struct pci_fixup __start_pci_fixups_suspend[];
94extern struct pci_fixup __end_pci_fixups_suspend[];
95extern struct pci_fixup __start_pci_fixups_suspend_late[];
96extern struct pci_fixup __end_pci_fixups_suspend_late[];
97
98static bool pci_apply_fixup_final_quirks;
99
100void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev)
101{
102 struct pci_fixup *start, *end;
103
104 switch (pass) {
105 case pci_fixup_early:
106 start = __start_pci_fixups_early;
107 end = __end_pci_fixups_early;
108 break;
109
110 case pci_fixup_header:
111 start = __start_pci_fixups_header;
112 end = __end_pci_fixups_header;
113 break;
114
115 case pci_fixup_final:
116 if (!pci_apply_fixup_final_quirks)
117 return;
118 start = __start_pci_fixups_final;
119 end = __end_pci_fixups_final;
120 break;
121
122 case pci_fixup_enable:
123 start = __start_pci_fixups_enable;
124 end = __end_pci_fixups_enable;
125 break;
126
127 case pci_fixup_resume:
128 start = __start_pci_fixups_resume;
129 end = __end_pci_fixups_resume;
130 break;
131
132 case pci_fixup_resume_early:
133 start = __start_pci_fixups_resume_early;
134 end = __end_pci_fixups_resume_early;
135 break;
136
137 case pci_fixup_suspend:
138 start = __start_pci_fixups_suspend;
139 end = __end_pci_fixups_suspend;
140 break;
141
142 case pci_fixup_suspend_late:
143 start = __start_pci_fixups_suspend_late;
144 end = __end_pci_fixups_suspend_late;
145 break;
146
147 default:
148 /* stupid compiler warning, you would think with an enum... */
149 return;
150 }
151 pci_do_fixups(dev, start, end);
152}
153EXPORT_SYMBOL(pci_fixup_device);
154
155static int __init pci_apply_final_quirks(void)
156{
157 struct pci_dev *dev = NULL;
158 u8 cls = 0;
159 u8 tmp;
160
161 if (pci_cache_line_size)
162 pr_info("PCI: CLS %u bytes\n", pci_cache_line_size << 2);
163
164 pci_apply_fixup_final_quirks = true;
165 for_each_pci_dev(dev) {
166 pci_fixup_device(pci_fixup_final, dev);
167 /*
168 * If arch hasn't set it explicitly yet, use the CLS
169 * value shared by all PCI devices. If there's a
170 * mismatch, fall back to the default value.
171 */
172 if (!pci_cache_line_size) {
173 pci_read_config_byte(dev, PCI_CACHE_LINE_SIZE, &tmp);
174 if (!cls)
175 cls = tmp;
176 if (!tmp || cls == tmp)
177 continue;
178
179 pci_info(dev, "CLS mismatch (%u != %u), using %u bytes\n",
180 cls << 2, tmp << 2,
181 pci_dfl_cache_line_size << 2);
182 pci_cache_line_size = pci_dfl_cache_line_size;
183 }
184 }
185
186 if (!pci_cache_line_size) {
187 pr_info("PCI: CLS %u bytes, default %u\n", cls << 2,
188 pci_dfl_cache_line_size << 2);
189 pci_cache_line_size = cls ? cls : pci_dfl_cache_line_size;
190 }
191
192 return 0;
193}
194fs_initcall_sync(pci_apply_final_quirks);
195
196/*
197 * Decoding should be disabled for a PCI device during BAR sizing to avoid
198 * conflict. But doing so may cause problems on host bridge and perhaps other
199 * key system devices. For devices that need to have mmio decoding always-on,
200 * we need to set the dev->mmio_always_on bit.
201 */
202static void quirk_mmio_always_on(struct pci_dev *dev)
203{
204 dev->mmio_always_on = 1;
205}
206DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_ANY_ID, PCI_ANY_ID,
207 PCI_CLASS_BRIDGE_HOST, 8, quirk_mmio_always_on);
208
209/*
210 * The Mellanox Tavor device gives false positive parity errors. Disable
211 * parity error reporting.
212 */
213DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_TAVOR, pci_disable_parity);
214DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_TAVOR_BRIDGE, pci_disable_parity);
215
216/*
217 * Deal with broken BIOSes that neglect to enable passive release,
218 * which can cause problems in combination with the 82441FX/PPro MTRRs
219 */
220static void quirk_passive_release(struct pci_dev *dev)
221{
222 struct pci_dev *d = NULL;
223 unsigned char dlc;
224
225 /*
226 * We have to make sure a particular bit is set in the PIIX3
227 * ISA bridge, so we have to go out and find it.
228 */
229 while ((d = pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, d))) {
230 pci_read_config_byte(d, 0x82, &dlc);
231 if (!(dlc & 1<<1)) {
232 pci_info(d, "PIIX3: Enabling Passive Release\n");
233 dlc |= 1<<1;
234 pci_write_config_byte(d, 0x82, dlc);
235 }
236 }
237}
238DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_passive_release);
239DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_passive_release);
240
241/*
242 * The VIA VP2/VP3/MVP3 seem to have some 'features'. There may be a
243 * workaround but VIA don't answer queries. If you happen to have good
244 * contacts at VIA ask them for me please -- Alan
245 *
246 * This appears to be BIOS not version dependent. So presumably there is a
247 * chipset level fix.
248 */
249static void quirk_isa_dma_hangs(struct pci_dev *dev)
250{
251 if (!isa_dma_bridge_buggy) {
252 isa_dma_bridge_buggy = 1;
253 pci_info(dev, "Activating ISA DMA hang workarounds\n");
254 }
255}
256/*
257 * It's not totally clear which chipsets are the problematic ones. We know
258 * 82C586 and 82C596 variants are affected.
259 */
260DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_0, quirk_isa_dma_hangs);
261DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C596, quirk_isa_dma_hangs);
262DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, quirk_isa_dma_hangs);
263DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, quirk_isa_dma_hangs);
264DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_1, quirk_isa_dma_hangs);
265DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_2, quirk_isa_dma_hangs);
266DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_3, quirk_isa_dma_hangs);
267
268/*
269 * Intel NM10 "TigerPoint" LPC PM1a_STS.BM_STS must be clear
270 * for some HT machines to use C4 w/o hanging.
271 */
272static void quirk_tigerpoint_bm_sts(struct pci_dev *dev)
273{
274 u32 pmbase;
275 u16 pm1a;
276
277 pci_read_config_dword(dev, 0x40, &pmbase);
278 pmbase = pmbase & 0xff80;
279 pm1a = inw(pmbase);
280
281 if (pm1a & 0x10) {
282 pci_info(dev, FW_BUG "TigerPoint LPC.BM_STS cleared\n");
283 outw(0x10, pmbase);
284 }
285}
286DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_TGP_LPC, quirk_tigerpoint_bm_sts);
287
288/* Chipsets where PCI->PCI transfers vanish or hang */
289static void quirk_nopcipci(struct pci_dev *dev)
290{
291 if ((pci_pci_problems & PCIPCI_FAIL) == 0) {
292 pci_info(dev, "Disabling direct PCI/PCI transfers\n");
293 pci_pci_problems |= PCIPCI_FAIL;
294 }
295}
296DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5597, quirk_nopcipci);
297DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_496, quirk_nopcipci);
298
299static void quirk_nopciamd(struct pci_dev *dev)
300{
301 u8 rev;
302 pci_read_config_byte(dev, 0x08, &rev);
303 if (rev == 0x13) {
304 /* Erratum 24 */
305 pci_info(dev, "Chipset erratum: Disabling direct PCI/AGP transfers\n");
306 pci_pci_problems |= PCIAGP_FAIL;
307 }
308}
309DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8151_0, quirk_nopciamd);
310
311/* Triton requires workarounds to be used by the drivers */
312static void quirk_triton(struct pci_dev *dev)
313{
314 if ((pci_pci_problems&PCIPCI_TRITON) == 0) {
315 pci_info(dev, "Limiting direct PCI/PCI transfers\n");
316 pci_pci_problems |= PCIPCI_TRITON;
317 }
318}
319DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437, quirk_triton);
320DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437VX, quirk_triton);
321DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82439, quirk_triton);
322DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82439TX, quirk_triton);
323
324/*
325 * VIA Apollo KT133 needs PCI latency patch
326 * Made according to a Windows driver-based patch by George E. Breese;
327 * see PCI Latency Adjust on http://www.viahardware.com/download/viatweak.shtm
328 * Also see http://www.au-ja.org/review-kt133a-1-en.phtml for the info on
329 * which Mr Breese based his work.
330 *
331 * Updated based on further information from the site and also on
332 * information provided by VIA
333 */
334static void quirk_vialatency(struct pci_dev *dev)
335{
336 struct pci_dev *p;
337 u8 busarb;
338
339 /*
340 * Ok, we have a potential problem chipset here. Now see if we have
341 * a buggy southbridge.
342 */
343 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, NULL);
344 if (p != NULL) {
345
346 /*
347 * 0x40 - 0x4f == 686B, 0x10 - 0x2f == 686A;
348 * thanks Dan Hollis.
349 * Check for buggy part revisions
350 */
351 if (p->revision < 0x40 || p->revision > 0x42)
352 goto exit;
353 } else {
354 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, NULL);
355 if (p == NULL) /* No problem parts */
356 goto exit;
357
358 /* Check for buggy part revisions */
359 if (p->revision < 0x10 || p->revision > 0x12)
360 goto exit;
361 }
362
363 /*
364 * Ok we have the problem. Now set the PCI master grant to occur
365 * every master grant. The apparent bug is that under high PCI load
366 * (quite common in Linux of course) you can get data loss when the
367 * CPU is held off the bus for 3 bus master requests. This happens
368 * to include the IDE controllers....
369 *
370 * VIA only apply this fix when an SB Live! is present but under
371 * both Linux and Windows this isn't enough, and we have seen
372 * corruption without SB Live! but with things like 3 UDMA IDE
373 * controllers. So we ignore that bit of the VIA recommendation..
374 */
375 pci_read_config_byte(dev, 0x76, &busarb);
376
377 /*
378 * Set bit 4 and bit 5 of byte 76 to 0x01
379 * "Master priority rotation on every PCI master grant"
380 */
381 busarb &= ~(1<<5);
382 busarb |= (1<<4);
383 pci_write_config_byte(dev, 0x76, busarb);
384 pci_info(dev, "Applying VIA southbridge workaround\n");
385exit:
386 pci_dev_put(p);
387}
388DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, quirk_vialatency);
389DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8371_1, quirk_vialatency);
390DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, quirk_vialatency);
391/* Must restore this on a resume from RAM */
392DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, quirk_vialatency);
393DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8371_1, quirk_vialatency);
394DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, quirk_vialatency);
395
396/* VIA Apollo VP3 needs ETBF on BT848/878 */
397static void quirk_viaetbf(struct pci_dev *dev)
398{
399 if ((pci_pci_problems&PCIPCI_VIAETBF) == 0) {
400 pci_info(dev, "Limiting direct PCI/PCI transfers\n");
401 pci_pci_problems |= PCIPCI_VIAETBF;
402 }
403}
404DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_viaetbf);
405
406static void quirk_vsfx(struct pci_dev *dev)
407{
408 if ((pci_pci_problems&PCIPCI_VSFX) == 0) {
409 pci_info(dev, "Limiting direct PCI/PCI transfers\n");
410 pci_pci_problems |= PCIPCI_VSFX;
411 }
412}
413DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C576, quirk_vsfx);
414
415/*
416 * ALi Magik requires workarounds to be used by the drivers that DMA to AGP
417 * space. Latency must be set to 0xA and Triton workaround applied too.
418 * [Info kindly provided by ALi]
419 */
420static void quirk_alimagik(struct pci_dev *dev)
421{
422 if ((pci_pci_problems&PCIPCI_ALIMAGIK) == 0) {
423 pci_info(dev, "Limiting direct PCI/PCI transfers\n");
424 pci_pci_problems |= PCIPCI_ALIMAGIK|PCIPCI_TRITON;
425 }
426}
427DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1647, quirk_alimagik);
428DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1651, quirk_alimagik);
429
430/* Natoma has some interesting boundary conditions with Zoran stuff at least */
431static void quirk_natoma(struct pci_dev *dev)
432{
433 if ((pci_pci_problems&PCIPCI_NATOMA) == 0) {
434 pci_info(dev, "Limiting direct PCI/PCI transfers\n");
435 pci_pci_problems |= PCIPCI_NATOMA;
436 }
437}
438DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_natoma);
439DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443LX_0, quirk_natoma);
440DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443LX_1, quirk_natoma);
441DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_0, quirk_natoma);
442DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_1, quirk_natoma);
443DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_2, quirk_natoma);
444
445/*
446 * This chip can cause PCI parity errors if config register 0xA0 is read
447 * while DMAs are occurring.
448 */
449static void quirk_citrine(struct pci_dev *dev)
450{
451 dev->cfg_size = 0xA0;
452}
453DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, quirk_citrine);
454
455/*
456 * This chip can cause bus lockups if config addresses above 0x600
457 * are read or written.
458 */
459static void quirk_nfp6000(struct pci_dev *dev)
460{
461 dev->cfg_size = 0x600;
462}
463DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP4000, quirk_nfp6000);
464DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP6000, quirk_nfp6000);
465DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP5000, quirk_nfp6000);
466DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP6000_VF, quirk_nfp6000);
467
468/* On IBM Crocodile ipr SAS adapters, expand BAR to system page size */
469static void quirk_extend_bar_to_page(struct pci_dev *dev)
470{
471 int i;
472
473 for (i = 0; i < PCI_STD_NUM_BARS; i++) {
474 struct resource *r = &dev->resource[i];
475
476 if (r->flags & IORESOURCE_MEM && resource_size(r) < PAGE_SIZE) {
477 r->end = PAGE_SIZE - 1;
478 r->start = 0;
479 r->flags |= IORESOURCE_UNSET;
480 pci_info(dev, "expanded BAR %d to page size: %pR\n",
481 i, r);
482 }
483 }
484}
485DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_IBM, 0x034a, quirk_extend_bar_to_page);
486
487/*
488 * S3 868 and 968 chips report region size equal to 32M, but they decode 64M.
489 * If it's needed, re-allocate the region.
490 */
491static void quirk_s3_64M(struct pci_dev *dev)
492{
493 struct resource *r = &dev->resource[0];
494
495 if ((r->start & 0x3ffffff) || r->end != r->start + 0x3ffffff) {
496 r->flags |= IORESOURCE_UNSET;
497 r->start = 0;
498 r->end = 0x3ffffff;
499 }
500}
501DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_868, quirk_s3_64M);
502DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_968, quirk_s3_64M);
503
504static void quirk_io(struct pci_dev *dev, int pos, unsigned size,
505 const char *name)
506{
507 u32 region;
508 struct pci_bus_region bus_region;
509 struct resource *res = dev->resource + pos;
510
511 pci_read_config_dword(dev, PCI_BASE_ADDRESS_0 + (pos << 2), ®ion);
512
513 if (!region)
514 return;
515
516 res->name = pci_name(dev);
517 res->flags = region & ~PCI_BASE_ADDRESS_IO_MASK;
518 res->flags |=
519 (IORESOURCE_IO | IORESOURCE_PCI_FIXED | IORESOURCE_SIZEALIGN);
520 region &= ~(size - 1);
521
522 /* Convert from PCI bus to resource space */
523 bus_region.start = region;
524 bus_region.end = region + size - 1;
525 pcibios_bus_to_resource(dev->bus, res, &bus_region);
526
527 pci_info(dev, FW_BUG "%s quirk: reg 0x%x: %pR\n",
528 name, PCI_BASE_ADDRESS_0 + (pos << 2), res);
529}
530
531/*
532 * Some CS5536 BIOSes (for example, the Soekris NET5501 board w/ comBIOS
533 * ver. 1.33 20070103) don't set the correct ISA PCI region header info.
534 * BAR0 should be 8 bytes; instead, it may be set to something like 8k
535 * (which conflicts w/ BAR1's memory range).
536 *
537 * CS553x's ISA PCI BARs may also be read-only (ref:
538 * https://bugzilla.kernel.org/show_bug.cgi?id=85991 - Comment #4 forward).
539 */
540static void quirk_cs5536_vsa(struct pci_dev *dev)
541{
542 static char *name = "CS5536 ISA bridge";
543
544 if (pci_resource_len(dev, 0) != 8) {
545 quirk_io(dev, 0, 8, name); /* SMB */
546 quirk_io(dev, 1, 256, name); /* GPIO */
547 quirk_io(dev, 2, 64, name); /* MFGPT */
548 pci_info(dev, "%s bug detected (incorrect header); workaround applied\n",
549 name);
550 }
551}
552DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_ISA, quirk_cs5536_vsa);
553
554static void quirk_io_region(struct pci_dev *dev, int port,
555 unsigned size, int nr, const char *name)
556{
557 u16 region;
558 struct pci_bus_region bus_region;
559 struct resource *res = dev->resource + nr;
560
561 pci_read_config_word(dev, port, ®ion);
562 region &= ~(size - 1);
563
564 if (!region)
565 return;
566
567 res->name = pci_name(dev);
568 res->flags = IORESOURCE_IO;
569
570 /* Convert from PCI bus to resource space */
571 bus_region.start = region;
572 bus_region.end = region + size - 1;
573 pcibios_bus_to_resource(dev->bus, res, &bus_region);
574
575 if (!pci_claim_resource(dev, nr))
576 pci_info(dev, "quirk: %pR claimed by %s\n", res, name);
577}
578
579/*
580 * ATI Northbridge setups MCE the processor if you even read somewhere
581 * between 0x3b0->0x3bb or read 0x3d3
582 */
583static void quirk_ati_exploding_mce(struct pci_dev *dev)
584{
585 pci_info(dev, "ATI Northbridge, reserving I/O ports 0x3b0 to 0x3bb\n");
586 /* Mae rhaid i ni beidio ag edrych ar y lleoliadiau I/O hyn */
587 request_region(0x3b0, 0x0C, "RadeonIGP");
588 request_region(0x3d3, 0x01, "RadeonIGP");
589}
590DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS100, quirk_ati_exploding_mce);
591
592/*
593 * In the AMD NL platform, this device ([1022:7912]) has a class code of
594 * PCI_CLASS_SERIAL_USB_XHCI (0x0c0330), which means the xhci driver will
595 * claim it.
596 *
597 * But the dwc3 driver is a more specific driver for this device, and we'd
598 * prefer to use it instead of xhci. To prevent xhci from claiming the
599 * device, change the class code to 0x0c03fe, which the PCI r3.0 spec
600 * defines as "USB device (not host controller)". The dwc3 driver can then
601 * claim it based on its Vendor and Device ID.
602 */
603static void quirk_amd_nl_class(struct pci_dev *pdev)
604{
605 u32 class = pdev->class;
606
607 /* Use "USB Device (not host controller)" class */
608 pdev->class = PCI_CLASS_SERIAL_USB_DEVICE;
609 pci_info(pdev, "PCI class overridden (%#08x -> %#08x) so dwc3 driver can claim this instead of xhci\n",
610 class, pdev->class);
611}
612DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_NL_USB,
613 quirk_amd_nl_class);
614
615/*
616 * Synopsys USB 3.x host HAPS platform has a class code of
617 * PCI_CLASS_SERIAL_USB_XHCI, and xhci driver can claim it. However, these
618 * devices should use dwc3-haps driver. Change these devices' class code to
619 * PCI_CLASS_SERIAL_USB_DEVICE to prevent the xhci-pci driver from claiming
620 * them.
621 */
622static void quirk_synopsys_haps(struct pci_dev *pdev)
623{
624 u32 class = pdev->class;
625
626 switch (pdev->device) {
627 case PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3:
628 case PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI:
629 case PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31:
630 pdev->class = PCI_CLASS_SERIAL_USB_DEVICE;
631 pci_info(pdev, "PCI class overridden (%#08x -> %#08x) so dwc3 driver can claim this instead of xhci\n",
632 class, pdev->class);
633 break;
634 }
635}
636DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_SYNOPSYS, PCI_ANY_ID,
637 PCI_CLASS_SERIAL_USB_XHCI, 0,
638 quirk_synopsys_haps);
639
640/*
641 * Let's make the southbridge information explicit instead of having to
642 * worry about people probing the ACPI areas, for example.. (Yes, it
643 * happens, and if you read the wrong ACPI register it will put the machine
644 * to sleep with no way of waking it up again. Bummer).
645 *
646 * ALI M7101: Two IO regions pointed to by words at
647 * 0xE0 (64 bytes of ACPI registers)
648 * 0xE2 (32 bytes of SMB registers)
649 */
650static void quirk_ali7101_acpi(struct pci_dev *dev)
651{
652 quirk_io_region(dev, 0xE0, 64, PCI_BRIDGE_RESOURCES, "ali7101 ACPI");
653 quirk_io_region(dev, 0xE2, 32, PCI_BRIDGE_RESOURCES+1, "ali7101 SMB");
654}
655DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101, quirk_ali7101_acpi);
656
657static void piix4_io_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable)
658{
659 u32 devres;
660 u32 mask, size, base;
661
662 pci_read_config_dword(dev, port, &devres);
663 if ((devres & enable) != enable)
664 return;
665 mask = (devres >> 16) & 15;
666 base = devres & 0xffff;
667 size = 16;
668 for (;;) {
669 unsigned bit = size >> 1;
670 if ((bit & mask) == bit)
671 break;
672 size = bit;
673 }
674 /*
675 * For now we only print it out. Eventually we'll want to
676 * reserve it (at least if it's in the 0x1000+ range), but
677 * let's get enough confirmation reports first.
678 */
679 base &= -size;
680 pci_info(dev, "%s PIO at %04x-%04x\n", name, base, base + size - 1);
681}
682
683static void piix4_mem_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable)
684{
685 u32 devres;
686 u32 mask, size, base;
687
688 pci_read_config_dword(dev, port, &devres);
689 if ((devres & enable) != enable)
690 return;
691 base = devres & 0xffff0000;
692 mask = (devres & 0x3f) << 16;
693 size = 128 << 16;
694 for (;;) {
695 unsigned bit = size >> 1;
696 if ((bit & mask) == bit)
697 break;
698 size = bit;
699 }
700
701 /*
702 * For now we only print it out. Eventually we'll want to
703 * reserve it, but let's get enough confirmation reports first.
704 */
705 base &= -size;
706 pci_info(dev, "%s MMIO at %04x-%04x\n", name, base, base + size - 1);
707}
708
709/*
710 * PIIX4 ACPI: Two IO regions pointed to by longwords at
711 * 0x40 (64 bytes of ACPI registers)
712 * 0x90 (16 bytes of SMB registers)
713 * and a few strange programmable PIIX4 device resources.
714 */
715static void quirk_piix4_acpi(struct pci_dev *dev)
716{
717 u32 res_a;
718
719 quirk_io_region(dev, 0x40, 64, PCI_BRIDGE_RESOURCES, "PIIX4 ACPI");
720 quirk_io_region(dev, 0x90, 16, PCI_BRIDGE_RESOURCES+1, "PIIX4 SMB");
721
722 /* Device resource A has enables for some of the other ones */
723 pci_read_config_dword(dev, 0x5c, &res_a);
724
725 piix4_io_quirk(dev, "PIIX4 devres B", 0x60, 3 << 21);
726 piix4_io_quirk(dev, "PIIX4 devres C", 0x64, 3 << 21);
727
728 /* Device resource D is just bitfields for static resources */
729
730 /* Device 12 enabled? */
731 if (res_a & (1 << 29)) {
732 piix4_io_quirk(dev, "PIIX4 devres E", 0x68, 1 << 20);
733 piix4_mem_quirk(dev, "PIIX4 devres F", 0x6c, 1 << 7);
734 }
735 /* Device 13 enabled? */
736 if (res_a & (1 << 30)) {
737 piix4_io_quirk(dev, "PIIX4 devres G", 0x70, 1 << 20);
738 piix4_mem_quirk(dev, "PIIX4 devres H", 0x74, 1 << 7);
739 }
740 piix4_io_quirk(dev, "PIIX4 devres I", 0x78, 1 << 20);
741 piix4_io_quirk(dev, "PIIX4 devres J", 0x7c, 1 << 20);
742}
743DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3, quirk_piix4_acpi);
744DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443MX_3, quirk_piix4_acpi);
745
746#define ICH_PMBASE 0x40
747#define ICH_ACPI_CNTL 0x44
748#define ICH4_ACPI_EN 0x10
749#define ICH6_ACPI_EN 0x80
750#define ICH4_GPIOBASE 0x58
751#define ICH4_GPIO_CNTL 0x5c
752#define ICH4_GPIO_EN 0x10
753#define ICH6_GPIOBASE 0x48
754#define ICH6_GPIO_CNTL 0x4c
755#define ICH6_GPIO_EN 0x10
756
757/*
758 * ICH4, ICH4-M, ICH5, ICH5-M ACPI: Three IO regions pointed to by longwords at
759 * 0x40 (128 bytes of ACPI, GPIO & TCO registers)
760 * 0x58 (64 bytes of GPIO I/O space)
761 */
762static void quirk_ich4_lpc_acpi(struct pci_dev *dev)
763{
764 u8 enable;
765
766 /*
767 * The check for PCIBIOS_MIN_IO is to ensure we won't create a conflict
768 * with low legacy (and fixed) ports. We don't know the decoding
769 * priority and can't tell whether the legacy device or the one created
770 * here is really at that address. This happens on boards with broken
771 * BIOSes.
772 */
773 pci_read_config_byte(dev, ICH_ACPI_CNTL, &enable);
774 if (enable & ICH4_ACPI_EN)
775 quirk_io_region(dev, ICH_PMBASE, 128, PCI_BRIDGE_RESOURCES,
776 "ICH4 ACPI/GPIO/TCO");
777
778 pci_read_config_byte(dev, ICH4_GPIO_CNTL, &enable);
779 if (enable & ICH4_GPIO_EN)
780 quirk_io_region(dev, ICH4_GPIOBASE, 64, PCI_BRIDGE_RESOURCES+1,
781 "ICH4 GPIO");
782}
783DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, quirk_ich4_lpc_acpi);
784DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AB_0, quirk_ich4_lpc_acpi);
785DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, quirk_ich4_lpc_acpi);
786DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_10, quirk_ich4_lpc_acpi);
787DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, quirk_ich4_lpc_acpi);
788DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, quirk_ich4_lpc_acpi);
789DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, quirk_ich4_lpc_acpi);
790DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, quirk_ich4_lpc_acpi);
791DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, quirk_ich4_lpc_acpi);
792DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_1, quirk_ich4_lpc_acpi);
793
794static void ich6_lpc_acpi_gpio(struct pci_dev *dev)
795{
796 u8 enable;
797
798 pci_read_config_byte(dev, ICH_ACPI_CNTL, &enable);
799 if (enable & ICH6_ACPI_EN)
800 quirk_io_region(dev, ICH_PMBASE, 128, PCI_BRIDGE_RESOURCES,
801 "ICH6 ACPI/GPIO/TCO");
802
803 pci_read_config_byte(dev, ICH6_GPIO_CNTL, &enable);
804 if (enable & ICH6_GPIO_EN)
805 quirk_io_region(dev, ICH6_GPIOBASE, 64, PCI_BRIDGE_RESOURCES+1,
806 "ICH6 GPIO");
807}
808
809static void ich6_lpc_generic_decode(struct pci_dev *dev, unsigned reg,
810 const char *name, int dynsize)
811{
812 u32 val;
813 u32 size, base;
814
815 pci_read_config_dword(dev, reg, &val);
816
817 /* Enabled? */
818 if (!(val & 1))
819 return;
820 base = val & 0xfffc;
821 if (dynsize) {
822 /*
823 * This is not correct. It is 16, 32 or 64 bytes depending on
824 * register D31:F0:ADh bits 5:4.
825 *
826 * But this gets us at least _part_ of it.
827 */
828 size = 16;
829 } else {
830 size = 128;
831 }
832 base &= ~(size-1);
833
834 /*
835 * Just print it out for now. We should reserve it after more
836 * debugging.
837 */
838 pci_info(dev, "%s PIO at %04x-%04x\n", name, base, base+size-1);
839}
840
841static void quirk_ich6_lpc(struct pci_dev *dev)
842{
843 /* Shared ACPI/GPIO decode with all ICH6+ */
844 ich6_lpc_acpi_gpio(dev);
845
846 /* ICH6-specific generic IO decode */
847 ich6_lpc_generic_decode(dev, 0x84, "LPC Generic IO decode 1", 0);
848 ich6_lpc_generic_decode(dev, 0x88, "LPC Generic IO decode 2", 1);
849}
850DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_0, quirk_ich6_lpc);
851DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, quirk_ich6_lpc);
852
853static void ich7_lpc_generic_decode(struct pci_dev *dev, unsigned reg,
854 const char *name)
855{
856 u32 val;
857 u32 mask, base;
858
859 pci_read_config_dword(dev, reg, &val);
860
861 /* Enabled? */
862 if (!(val & 1))
863 return;
864
865 /* IO base in bits 15:2, mask in bits 23:18, both are dword-based */
866 base = val & 0xfffc;
867 mask = (val >> 16) & 0xfc;
868 mask |= 3;
869
870 /*
871 * Just print it out for now. We should reserve it after more
872 * debugging.
873 */
874 pci_info(dev, "%s PIO at %04x (mask %04x)\n", name, base, mask);
875}
876
877/* ICH7-10 has the same common LPC generic IO decode registers */
878static void quirk_ich7_lpc(struct pci_dev *dev)
879{
880 /* We share the common ACPI/GPIO decode with ICH6 */
881 ich6_lpc_acpi_gpio(dev);
882
883 /* And have 4 ICH7+ generic decodes */
884 ich7_lpc_generic_decode(dev, 0x84, "ICH7 LPC Generic IO decode 1");
885 ich7_lpc_generic_decode(dev, 0x88, "ICH7 LPC Generic IO decode 2");
886 ich7_lpc_generic_decode(dev, 0x8c, "ICH7 LPC Generic IO decode 3");
887 ich7_lpc_generic_decode(dev, 0x90, "ICH7 LPC Generic IO decode 4");
888}
889DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_0, quirk_ich7_lpc);
890DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_1, quirk_ich7_lpc);
891DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_31, quirk_ich7_lpc);
892DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_0, quirk_ich7_lpc);
893DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_2, quirk_ich7_lpc);
894DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_3, quirk_ich7_lpc);
895DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_1, quirk_ich7_lpc);
896DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_4, quirk_ich7_lpc);
897DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_2, quirk_ich7_lpc);
898DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_4, quirk_ich7_lpc);
899DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_7, quirk_ich7_lpc);
900DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_8, quirk_ich7_lpc);
901DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH10_1, quirk_ich7_lpc);
902
903/*
904 * VIA ACPI: One IO region pointed to by longword at
905 * 0x48 or 0x20 (256 bytes of ACPI registers)
906 */
907static void quirk_vt82c586_acpi(struct pci_dev *dev)
908{
909 if (dev->revision & 0x10)
910 quirk_io_region(dev, 0x48, 256, PCI_BRIDGE_RESOURCES,
911 "vt82c586 ACPI");
912}
913DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_vt82c586_acpi);
914
915/*
916 * VIA VT82C686 ACPI: Three IO region pointed to by (long)words at
917 * 0x48 (256 bytes of ACPI registers)
918 * 0x70 (128 bytes of hardware monitoring register)
919 * 0x90 (16 bytes of SMB registers)
920 */
921static void quirk_vt82c686_acpi(struct pci_dev *dev)
922{
923 quirk_vt82c586_acpi(dev);
924
925 quirk_io_region(dev, 0x70, 128, PCI_BRIDGE_RESOURCES+1,
926 "vt82c686 HW-mon");
927
928 quirk_io_region(dev, 0x90, 16, PCI_BRIDGE_RESOURCES+2, "vt82c686 SMB");
929}
930DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_vt82c686_acpi);
931
932/*
933 * VIA VT8235 ISA Bridge: Two IO regions pointed to by words at
934 * 0x88 (128 bytes of power management registers)
935 * 0xd0 (16 bytes of SMB registers)
936 */
937static void quirk_vt8235_acpi(struct pci_dev *dev)
938{
939 quirk_io_region(dev, 0x88, 128, PCI_BRIDGE_RESOURCES, "vt8235 PM");
940 quirk_io_region(dev, 0xd0, 16, PCI_BRIDGE_RESOURCES+1, "vt8235 SMB");
941}
942DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_vt8235_acpi);
943
944/*
945 * TI XIO2000a PCIe-PCI Bridge erroneously reports it supports fast
946 * back-to-back: Disable fast back-to-back on the secondary bus segment
947 */
948static void quirk_xio2000a(struct pci_dev *dev)
949{
950 struct pci_dev *pdev;
951 u16 command;
952
953 pci_warn(dev, "TI XIO2000a quirk detected; secondary bus fast back-to-back transfers disabled\n");
954 list_for_each_entry(pdev, &dev->subordinate->devices, bus_list) {
955 pci_read_config_word(pdev, PCI_COMMAND, &command);
956 if (command & PCI_COMMAND_FAST_BACK)
957 pci_write_config_word(pdev, PCI_COMMAND, command & ~PCI_COMMAND_FAST_BACK);
958 }
959}
960DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XIO2000A,
961 quirk_xio2000a);
962
963#ifdef CONFIG_X86_IO_APIC
964
965#include <asm/io_apic.h>
966
967/*
968 * VIA 686A/B: If an IO-APIC is active, we need to route all on-chip
969 * devices to the external APIC.
970 *
971 * TODO: When we have device-specific interrupt routers, this code will go
972 * away from quirks.
973 */
974static void quirk_via_ioapic(struct pci_dev *dev)
975{
976 u8 tmp;
977
978 if (nr_ioapics < 1)
979 tmp = 0; /* nothing routed to external APIC */
980 else
981 tmp = 0x1f; /* all known bits (4-0) routed to external APIC */
982
983 pci_info(dev, "%sbling VIA external APIC routing\n",
984 tmp == 0 ? "Disa" : "Ena");
985
986 /* Offset 0x58: External APIC IRQ output control */
987 pci_write_config_byte(dev, 0x58, tmp);
988}
989DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic);
990DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic);
991
992/*
993 * VIA 8237: Some BIOSes don't set the 'Bypass APIC De-Assert Message' Bit.
994 * This leads to doubled level interrupt rates.
995 * Set this bit to get rid of cycle wastage.
996 * Otherwise uncritical.
997 */
998static void quirk_via_vt8237_bypass_apic_deassert(struct pci_dev *dev)
999{
1000 u8 misc_control2;
1001#define BYPASS_APIC_DEASSERT 8
1002
1003 pci_read_config_byte(dev, 0x5B, &misc_control2);
1004 if (!(misc_control2 & BYPASS_APIC_DEASSERT)) {
1005 pci_info(dev, "Bypassing VIA 8237 APIC De-Assert Message\n");
1006 pci_write_config_byte(dev, 0x5B, misc_control2|BYPASS_APIC_DEASSERT);
1007 }
1008}
1009DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_vt8237_bypass_apic_deassert);
1010DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_vt8237_bypass_apic_deassert);
1011
1012/*
1013 * The AMD IO-APIC can hang the box when an APIC IRQ is masked.
1014 * We check all revs >= B0 (yet not in the pre production!) as the bug
1015 * is currently marked NoFix
1016 *
1017 * We have multiple reports of hangs with this chipset that went away with
1018 * noapic specified. For the moment we assume it's the erratum. We may be wrong
1019 * of course. However the advice is demonstrably good even if so.
1020 */
1021static void quirk_amd_ioapic(struct pci_dev *dev)
1022{
1023 if (dev->revision >= 0x02) {
1024 pci_warn(dev, "I/O APIC: AMD Erratum #22 may be present. In the event of instability try\n");
1025 pci_warn(dev, " : booting with the \"noapic\" option\n");
1026 }
1027}
1028DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_VIPER_7410, quirk_amd_ioapic);
1029#endif /* CONFIG_X86_IO_APIC */
1030
1031#if defined(CONFIG_ARM64) && defined(CONFIG_PCI_ATS)
1032
1033static void quirk_cavium_sriov_rnm_link(struct pci_dev *dev)
1034{
1035 /* Fix for improper SR-IOV configuration on Cavium cn88xx RNM device */
1036 if (dev->subsystem_device == 0xa118)
1037 dev->sriov->link = dev->devfn;
1038}
1039DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CAVIUM, 0xa018, quirk_cavium_sriov_rnm_link);
1040#endif
1041
1042/*
1043 * Some settings of MMRBC can lead to data corruption so block changes.
1044 * See AMD 8131 HyperTransport PCI-X Tunnel Revision Guide
1045 */
1046static void quirk_amd_8131_mmrbc(struct pci_dev *dev)
1047{
1048 if (dev->subordinate && dev->revision <= 0x12) {
1049 pci_info(dev, "AMD8131 rev %x detected; disabling PCI-X MMRBC\n",
1050 dev->revision);
1051 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MMRBC;
1052 }
1053}
1054DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_amd_8131_mmrbc);
1055
1056/*
1057 * FIXME: it is questionable that quirk_via_acpi() is needed. It shows up
1058 * as an ISA bridge, and does not support the PCI_INTERRUPT_LINE register
1059 * at all. Therefore it seems like setting the pci_dev's IRQ to the value
1060 * of the ACPI SCI interrupt is only done for convenience.
1061 * -jgarzik
1062 */
1063static void quirk_via_acpi(struct pci_dev *d)
1064{
1065 u8 irq;
1066
1067 /* VIA ACPI device: SCI IRQ line in PCI config byte 0x42 */
1068 pci_read_config_byte(d, 0x42, &irq);
1069 irq &= 0xf;
1070 if (irq && (irq != 2))
1071 d->irq = irq;
1072}
1073DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_via_acpi);
1074DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_via_acpi);
1075
1076/* VIA bridges which have VLink */
1077static int via_vlink_dev_lo = -1, via_vlink_dev_hi = 18;
1078
1079static void quirk_via_bridge(struct pci_dev *dev)
1080{
1081 /* See what bridge we have and find the device ranges */
1082 switch (dev->device) {
1083 case PCI_DEVICE_ID_VIA_82C686:
1084 /*
1085 * The VT82C686 is special; it attaches to PCI and can have
1086 * any device number. All its subdevices are functions of
1087 * that single device.
1088 */
1089 via_vlink_dev_lo = PCI_SLOT(dev->devfn);
1090 via_vlink_dev_hi = PCI_SLOT(dev->devfn);
1091 break;
1092 case PCI_DEVICE_ID_VIA_8237:
1093 case PCI_DEVICE_ID_VIA_8237A:
1094 via_vlink_dev_lo = 15;
1095 break;
1096 case PCI_DEVICE_ID_VIA_8235:
1097 via_vlink_dev_lo = 16;
1098 break;
1099 case PCI_DEVICE_ID_VIA_8231:
1100 case PCI_DEVICE_ID_VIA_8233_0:
1101 case PCI_DEVICE_ID_VIA_8233A:
1102 case PCI_DEVICE_ID_VIA_8233C_0:
1103 via_vlink_dev_lo = 17;
1104 break;
1105 }
1106}
1107DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_bridge);
1108DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, quirk_via_bridge);
1109DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233_0, quirk_via_bridge);
1110DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233A, quirk_via_bridge);
1111DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233C_0, quirk_via_bridge);
1112DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_via_bridge);
1113DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_bridge);
1114DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237A, quirk_via_bridge);
1115
1116/*
1117 * quirk_via_vlink - VIA VLink IRQ number update
1118 * @dev: PCI device
1119 *
1120 * If the device we are dealing with is on a PIC IRQ we need to ensure that
1121 * the IRQ line register which usually is not relevant for PCI cards, is
1122 * actually written so that interrupts get sent to the right place.
1123 *
1124 * We only do this on systems where a VIA south bridge was detected, and
1125 * only for VIA devices on the motherboard (see quirk_via_bridge above).
1126 */
1127static void quirk_via_vlink(struct pci_dev *dev)
1128{
1129 u8 irq, new_irq;
1130
1131 /* Check if we have VLink at all */
1132 if (via_vlink_dev_lo == -1)
1133 return;
1134
1135 new_irq = dev->irq;
1136
1137 /* Don't quirk interrupts outside the legacy IRQ range */
1138 if (!new_irq || new_irq > 15)
1139 return;
1140
1141 /* Internal device ? */
1142 if (dev->bus->number != 0 || PCI_SLOT(dev->devfn) > via_vlink_dev_hi ||
1143 PCI_SLOT(dev->devfn) < via_vlink_dev_lo)
1144 return;
1145
1146 /*
1147 * This is an internal VLink device on a PIC interrupt. The BIOS
1148 * ought to have set this but may not have, so we redo it.
1149 */
1150 pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq);
1151 if (new_irq != irq) {
1152 pci_info(dev, "VIA VLink IRQ fixup, from %d to %d\n",
1153 irq, new_irq);
1154 udelay(15); /* unknown if delay really needed */
1155 pci_write_config_byte(dev, PCI_INTERRUPT_LINE, new_irq);
1156 }
1157}
1158DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_ANY_ID, quirk_via_vlink);
1159
1160/*
1161 * VIA VT82C598 has its device ID settable and many BIOSes set it to the ID
1162 * of VT82C597 for backward compatibility. We need to switch it off to be
1163 * able to recognize the real type of the chip.
1164 */
1165static void quirk_vt82c598_id(struct pci_dev *dev)
1166{
1167 pci_write_config_byte(dev, 0xfc, 0);
1168 pci_read_config_word(dev, PCI_DEVICE_ID, &dev->device);
1169}
1170DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_vt82c598_id);
1171
1172/*
1173 * CardBus controllers have a legacy base address that enables them to
1174 * respond as i82365 pcmcia controllers. We don't want them to do this
1175 * even if the Linux CardBus driver is not loaded, because the Linux i82365
1176 * driver does not (and should not) handle CardBus.
1177 */
1178static void quirk_cardbus_legacy(struct pci_dev *dev)
1179{
1180 pci_write_config_dword(dev, PCI_CB_LEGACY_MODE_BASE, 0);
1181}
1182DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_ANY_ID, PCI_ANY_ID,
1183 PCI_CLASS_BRIDGE_CARDBUS, 8, quirk_cardbus_legacy);
1184DECLARE_PCI_FIXUP_CLASS_RESUME_EARLY(PCI_ANY_ID, PCI_ANY_ID,
1185 PCI_CLASS_BRIDGE_CARDBUS, 8, quirk_cardbus_legacy);
1186
1187/*
1188 * Following the PCI ordering rules is optional on the AMD762. I'm not sure
1189 * what the designers were smoking but let's not inhale...
1190 *
1191 * To be fair to AMD, it follows the spec by default, it's BIOS people who
1192 * turn it off!
1193 */
1194static void quirk_amd_ordering(struct pci_dev *dev)
1195{
1196 u32 pcic;
1197 pci_read_config_dword(dev, 0x4C, &pcic);
1198 if ((pcic & 6) != 6) {
1199 pcic |= 6;
1200 pci_warn(dev, "BIOS failed to enable PCI standards compliance; fixing this error\n");
1201 pci_write_config_dword(dev, 0x4C, pcic);
1202 pci_read_config_dword(dev, 0x84, &pcic);
1203 pcic |= (1 << 23); /* Required in this mode */
1204 pci_write_config_dword(dev, 0x84, pcic);
1205 }
1206}
1207DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering);
1208DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering);
1209
1210/*
1211 * DreamWorks-provided workaround for Dunord I-3000 problem
1212 *
1213 * This card decodes and responds to addresses not apparently assigned to
1214 * it. We force a larger allocation to ensure that nothing gets put too
1215 * close to it.
1216 */
1217static void quirk_dunord(struct pci_dev *dev)
1218{
1219 struct resource *r = &dev->resource[1];
1220
1221 r->flags |= IORESOURCE_UNSET;
1222 r->start = 0;
1223 r->end = 0xffffff;
1224}
1225DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_DUNORD, PCI_DEVICE_ID_DUNORD_I3000, quirk_dunord);
1226
1227/*
1228 * i82380FB mobile docking controller: its PCI-to-PCI bridge is subtractive
1229 * decoding (transparent), and does indicate this in the ProgIf.
1230 * Unfortunately, the ProgIf value is wrong - 0x80 instead of 0x01.
1231 */
1232static void quirk_transparent_bridge(struct pci_dev *dev)
1233{
1234 dev->transparent = 1;
1235}
1236DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82380FB, quirk_transparent_bridge);
1237DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA, 0x605, quirk_transparent_bridge);
1238
1239/*
1240 * Common misconfiguration of the MediaGX/Geode PCI master that will reduce
1241 * PCI bandwidth from 70MB/s to 25MB/s. See the GXM/GXLV/GX1 datasheets
1242 * found at http://www.national.com/analog for info on what these bits do.
1243 * <christer@weinigel.se>
1244 */
1245static void quirk_mediagx_master(struct pci_dev *dev)
1246{
1247 u8 reg;
1248
1249 pci_read_config_byte(dev, 0x41, ®);
1250 if (reg & 2) {
1251 reg &= ~2;
1252 pci_info(dev, "Fixup for MediaGX/Geode Slave Disconnect Boundary (0x41=0x%02x)\n",
1253 reg);
1254 pci_write_config_byte(dev, 0x41, reg);
1255 }
1256}
1257DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master);
1258DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master);
1259
1260/*
1261 * Ensure C0 rev restreaming is off. This is normally done by the BIOS but
1262 * in the odd case it is not the results are corruption hence the presence
1263 * of a Linux check.
1264 */
1265static void quirk_disable_pxb(struct pci_dev *pdev)
1266{
1267 u16 config;
1268
1269 if (pdev->revision != 0x04) /* Only C0 requires this */
1270 return;
1271 pci_read_config_word(pdev, 0x40, &config);
1272 if (config & (1<<6)) {
1273 config &= ~(1<<6);
1274 pci_write_config_word(pdev, 0x40, config);
1275 pci_info(pdev, "C0 revision 450NX. Disabling PCI restreaming\n");
1276 }
1277}
1278DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb);
1279DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb);
1280
1281static void quirk_amd_ide_mode(struct pci_dev *pdev)
1282{
1283 /* set SBX00/Hudson-2 SATA in IDE mode to AHCI mode */
1284 u8 tmp;
1285
1286 pci_read_config_byte(pdev, PCI_CLASS_DEVICE, &tmp);
1287 if (tmp == 0x01) {
1288 pci_read_config_byte(pdev, 0x40, &tmp);
1289 pci_write_config_byte(pdev, 0x40, tmp|1);
1290 pci_write_config_byte(pdev, 0x9, 1);
1291 pci_write_config_byte(pdev, 0xa, 6);
1292 pci_write_config_byte(pdev, 0x40, tmp);
1293
1294 pdev->class = PCI_CLASS_STORAGE_SATA_AHCI;
1295 pci_info(pdev, "set SATA to AHCI mode\n");
1296 }
1297}
1298DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode);
1299DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode);
1300DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode);
1301DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode);
1302DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_HUDSON2_SATA_IDE, quirk_amd_ide_mode);
1303DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_HUDSON2_SATA_IDE, quirk_amd_ide_mode);
1304DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, 0x7900, quirk_amd_ide_mode);
1305DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, 0x7900, quirk_amd_ide_mode);
1306
1307/* Serverworks CSB5 IDE does not fully support native mode */
1308static void quirk_svwks_csb5ide(struct pci_dev *pdev)
1309{
1310 u8 prog;
1311 pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog);
1312 if (prog & 5) {
1313 prog &= ~5;
1314 pdev->class &= ~5;
1315 pci_write_config_byte(pdev, PCI_CLASS_PROG, prog);
1316 /* PCI layer will sort out resources */
1317 }
1318}
1319DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_CSB5IDE, quirk_svwks_csb5ide);
1320
1321/* Intel 82801CAM ICH3-M datasheet says IDE modes must be the same */
1322static void quirk_ide_samemode(struct pci_dev *pdev)
1323{
1324 u8 prog;
1325
1326 pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog);
1327
1328 if (((prog & 1) && !(prog & 4)) || ((prog & 4) && !(prog & 1))) {
1329 pci_info(pdev, "IDE mode mismatch; forcing legacy mode\n");
1330 prog &= ~5;
1331 pdev->class &= ~5;
1332 pci_write_config_byte(pdev, PCI_CLASS_PROG, prog);
1333 }
1334}
1335DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_10, quirk_ide_samemode);
1336
1337/* Some ATA devices break if put into D3 */
1338static void quirk_no_ata_d3(struct pci_dev *pdev)
1339{
1340 pdev->dev_flags |= PCI_DEV_FLAGS_NO_D3;
1341}
1342/* Quirk the legacy ATA devices only. The AHCI ones are ok */
1343DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_ANY_ID,
1344 PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
1345DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_ATI, PCI_ANY_ID,
1346 PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
1347/* ALi loses some register settings that we cannot then restore */
1348DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AL, PCI_ANY_ID,
1349 PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
1350/* VIA comes back fine but we need to keep it alive or ACPI GTM failures
1351 occur when mode detecting */
1352DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_VIA, PCI_ANY_ID,
1353 PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
1354
1355/*
1356 * This was originally an Alpha-specific thing, but it really fits here.
1357 * The i82375 PCI/EISA bridge appears as non-classified. Fix that.
1358 */
1359static void quirk_eisa_bridge(struct pci_dev *dev)
1360{
1361 dev->class = PCI_CLASS_BRIDGE_EISA << 8;
1362}
1363DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82375, quirk_eisa_bridge);
1364
1365/*
1366 * On ASUS P4B boards, the SMBus PCI Device within the ICH2/4 southbridge
1367 * is not activated. The myth is that Asus said that they do not want the
1368 * users to be irritated by just another PCI Device in the Win98 device
1369 * manager. (see the file prog/hotplug/README.p4b in the lm_sensors
1370 * package 2.7.0 for details)
1371 *
1372 * The SMBus PCI Device can be activated by setting a bit in the ICH LPC
1373 * bridge. Unfortunately, this device has no subvendor/subdevice ID. So it
1374 * becomes necessary to do this tweak in two steps -- the chosen trigger
1375 * is either the Host bridge (preferred) or on-board VGA controller.
1376 *
1377 * Note that we used to unhide the SMBus that way on Toshiba laptops
1378 * (Satellite A40 and Tecra M2) but then found that the thermal management
1379 * was done by SMM code, which could cause unsynchronized concurrent
1380 * accesses to the SMBus registers, with potentially bad effects. Thus you
1381 * should be very careful when adding new entries: if SMM is accessing the
1382 * Intel SMBus, this is a very good reason to leave it hidden.
1383 *
1384 * Likewise, many recent laptops use ACPI for thermal management. If the
1385 * ACPI DSDT code accesses the SMBus, then Linux should not access it
1386 * natively, and keeping the SMBus hidden is the right thing to do. If you
1387 * are about to add an entry in the table below, please first disassemble
1388 * the DSDT and double-check that there is no code accessing the SMBus.
1389 */
1390static int asus_hides_smbus;
1391
1392static void asus_hides_smbus_hostbridge(struct pci_dev *dev)
1393{
1394 if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) {
1395 if (dev->device == PCI_DEVICE_ID_INTEL_82845_HB)
1396 switch (dev->subsystem_device) {
1397 case 0x8025: /* P4B-LX */
1398 case 0x8070: /* P4B */
1399 case 0x8088: /* P4B533 */
1400 case 0x1626: /* L3C notebook */
1401 asus_hides_smbus = 1;
1402 }
1403 else if (dev->device == PCI_DEVICE_ID_INTEL_82845G_HB)
1404 switch (dev->subsystem_device) {
1405 case 0x80b1: /* P4GE-V */
1406 case 0x80b2: /* P4PE */
1407 case 0x8093: /* P4B533-V */
1408 asus_hides_smbus = 1;
1409 }
1410 else if (dev->device == PCI_DEVICE_ID_INTEL_82850_HB)
1411 switch (dev->subsystem_device) {
1412 case 0x8030: /* P4T533 */
1413 asus_hides_smbus = 1;
1414 }
1415 else if (dev->device == PCI_DEVICE_ID_INTEL_7205_0)
1416 switch (dev->subsystem_device) {
1417 case 0x8070: /* P4G8X Deluxe */
1418 asus_hides_smbus = 1;
1419 }
1420 else if (dev->device == PCI_DEVICE_ID_INTEL_E7501_MCH)
1421 switch (dev->subsystem_device) {
1422 case 0x80c9: /* PU-DLS */
1423 asus_hides_smbus = 1;
1424 }
1425 else if (dev->device == PCI_DEVICE_ID_INTEL_82855GM_HB)
1426 switch (dev->subsystem_device) {
1427 case 0x1751: /* M2N notebook */
1428 case 0x1821: /* M5N notebook */
1429 case 0x1897: /* A6L notebook */
1430 asus_hides_smbus = 1;
1431 }
1432 else if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1433 switch (dev->subsystem_device) {
1434 case 0x184b: /* W1N notebook */
1435 case 0x186a: /* M6Ne notebook */
1436 asus_hides_smbus = 1;
1437 }
1438 else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB)
1439 switch (dev->subsystem_device) {
1440 case 0x80f2: /* P4P800-X */
1441 asus_hides_smbus = 1;
1442 }
1443 else if (dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB)
1444 switch (dev->subsystem_device) {
1445 case 0x1882: /* M6V notebook */
1446 case 0x1977: /* A6VA notebook */
1447 asus_hides_smbus = 1;
1448 }
1449 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_HP)) {
1450 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1451 switch (dev->subsystem_device) {
1452 case 0x088C: /* HP Compaq nc8000 */
1453 case 0x0890: /* HP Compaq nc6000 */
1454 asus_hides_smbus = 1;
1455 }
1456 else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB)
1457 switch (dev->subsystem_device) {
1458 case 0x12bc: /* HP D330L */
1459 case 0x12bd: /* HP D530 */
1460 case 0x006a: /* HP Compaq nx9500 */
1461 asus_hides_smbus = 1;
1462 }
1463 else if (dev->device == PCI_DEVICE_ID_INTEL_82875_HB)
1464 switch (dev->subsystem_device) {
1465 case 0x12bf: /* HP xw4100 */
1466 asus_hides_smbus = 1;
1467 }
1468 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG)) {
1469 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1470 switch (dev->subsystem_device) {
1471 case 0xC00C: /* Samsung P35 notebook */
1472 asus_hides_smbus = 1;
1473 }
1474 } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ)) {
1475 if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB)
1476 switch (dev->subsystem_device) {
1477 case 0x0058: /* Compaq Evo N620c */
1478 asus_hides_smbus = 1;
1479 }
1480 else if (dev->device == PCI_DEVICE_ID_INTEL_82810_IG3)
1481 switch (dev->subsystem_device) {
1482 case 0xB16C: /* Compaq Deskpro EP 401963-001 (PCA# 010174) */
1483 /* Motherboard doesn't have Host bridge
1484 * subvendor/subdevice IDs, therefore checking
1485 * its on-board VGA controller */
1486 asus_hides_smbus = 1;
1487 }
1488 else if (dev->device == PCI_DEVICE_ID_INTEL_82801DB_2)
1489 switch (dev->subsystem_device) {
1490 case 0x00b8: /* Compaq Evo D510 CMT */
1491 case 0x00b9: /* Compaq Evo D510 SFF */
1492 case 0x00ba: /* Compaq Evo D510 USDT */
1493 /* Motherboard doesn't have Host bridge
1494 * subvendor/subdevice IDs and on-board VGA
1495 * controller is disabled if an AGP card is
1496 * inserted, therefore checking USB UHCI
1497 * Controller #1 */
1498 asus_hides_smbus = 1;
1499 }
1500 else if (dev->device == PCI_DEVICE_ID_INTEL_82815_CGC)
1501 switch (dev->subsystem_device) {
1502 case 0x001A: /* Compaq Deskpro EN SSF P667 815E */
1503 /* Motherboard doesn't have host bridge
1504 * subvendor/subdevice IDs, therefore checking
1505 * its on-board VGA controller */
1506 asus_hides_smbus = 1;
1507 }
1508 }
1509}
1510DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845_HB, asus_hides_smbus_hostbridge);
1511DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845G_HB, asus_hides_smbus_hostbridge);
1512DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82850_HB, asus_hides_smbus_hostbridge);
1513DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82865_HB, asus_hides_smbus_hostbridge);
1514DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82875_HB, asus_hides_smbus_hostbridge);
1515DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_7205_0, asus_hides_smbus_hostbridge);
1516DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7501_MCH, asus_hides_smbus_hostbridge);
1517DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855PM_HB, asus_hides_smbus_hostbridge);
1518DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855GM_HB, asus_hides_smbus_hostbridge);
1519DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82915GM_HB, asus_hides_smbus_hostbridge);
1520
1521DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82810_IG3, asus_hides_smbus_hostbridge);
1522DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_2, asus_hides_smbus_hostbridge);
1523DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82815_CGC, asus_hides_smbus_hostbridge);
1524
1525static void asus_hides_smbus_lpc(struct pci_dev *dev)
1526{
1527 u16 val;
1528
1529 if (likely(!asus_hides_smbus))
1530 return;
1531
1532 pci_read_config_word(dev, 0xF2, &val);
1533 if (val & 0x8) {
1534 pci_write_config_word(dev, 0xF2, val & (~0x8));
1535 pci_read_config_word(dev, 0xF2, &val);
1536 if (val & 0x8)
1537 pci_info(dev, "i801 SMBus device continues to play 'hide and seek'! 0x%x\n",
1538 val);
1539 else
1540 pci_info(dev, "Enabled i801 SMBus device\n");
1541 }
1542}
1543DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, asus_hides_smbus_lpc);
1544DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc);
1545DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc);
1546DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, asus_hides_smbus_lpc);
1547DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc);
1548DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc);
1549DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc);
1550DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, asus_hides_smbus_lpc);
1551DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc);
1552DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc);
1553DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, asus_hides_smbus_lpc);
1554DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc);
1555DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc);
1556DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc);
1557
1558/* It appears we just have one such device. If not, we have a warning */
1559static void __iomem *asus_rcba_base;
1560static void asus_hides_smbus_lpc_ich6_suspend(struct pci_dev *dev)
1561{
1562 u32 rcba;
1563
1564 if (likely(!asus_hides_smbus))
1565 return;
1566 WARN_ON(asus_rcba_base);
1567
1568 pci_read_config_dword(dev, 0xF0, &rcba);
1569 /* use bits 31:14, 16 kB aligned */
1570 asus_rcba_base = ioremap(rcba & 0xFFFFC000, 0x4000);
1571 if (asus_rcba_base == NULL)
1572 return;
1573}
1574
1575static void asus_hides_smbus_lpc_ich6_resume_early(struct pci_dev *dev)
1576{
1577 u32 val;
1578
1579 if (likely(!asus_hides_smbus || !asus_rcba_base))
1580 return;
1581
1582 /* read the Function Disable register, dword mode only */
1583 val = readl(asus_rcba_base + 0x3418);
1584
1585 /* enable the SMBus device */
1586 writel(val & 0xFFFFFFF7, asus_rcba_base + 0x3418);
1587}
1588
1589static void asus_hides_smbus_lpc_ich6_resume(struct pci_dev *dev)
1590{
1591 if (likely(!asus_hides_smbus || !asus_rcba_base))
1592 return;
1593
1594 iounmap(asus_rcba_base);
1595 asus_rcba_base = NULL;
1596 pci_info(dev, "Enabled ICH6/i801 SMBus device\n");
1597}
1598
1599static void asus_hides_smbus_lpc_ich6(struct pci_dev *dev)
1600{
1601 asus_hides_smbus_lpc_ich6_suspend(dev);
1602 asus_hides_smbus_lpc_ich6_resume_early(dev);
1603 asus_hides_smbus_lpc_ich6_resume(dev);
1604}
1605DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6);
1606DECLARE_PCI_FIXUP_SUSPEND(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_suspend);
1607DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_resume);
1608DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_resume_early);
1609
1610/* SiS 96x south bridge: BIOS typically hides SMBus device... */
1611static void quirk_sis_96x_smbus(struct pci_dev *dev)
1612{
1613 u8 val = 0;
1614 pci_read_config_byte(dev, 0x77, &val);
1615 if (val & 0x10) {
1616 pci_info(dev, "Enabling SiS 96x SMBus\n");
1617 pci_write_config_byte(dev, 0x77, val & ~0x10);
1618 }
1619}
1620DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_961, quirk_sis_96x_smbus);
1621DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_962, quirk_sis_96x_smbus);
1622DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_963, quirk_sis_96x_smbus);
1623DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC, quirk_sis_96x_smbus);
1624DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_961, quirk_sis_96x_smbus);
1625DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_962, quirk_sis_96x_smbus);
1626DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_963, quirk_sis_96x_smbus);
1627DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC, quirk_sis_96x_smbus);
1628
1629/*
1630 * ... This is further complicated by the fact that some SiS96x south
1631 * bridges pretend to be 85C503/5513 instead. In that case see if we
1632 * spotted a compatible north bridge to make sure.
1633 * (pci_find_device() doesn't work yet)
1634 *
1635 * We can also enable the sis96x bit in the discovery register..
1636 */
1637#define SIS_DETECT_REGISTER 0x40
1638
1639static void quirk_sis_503(struct pci_dev *dev)
1640{
1641 u8 reg;
1642 u16 devid;
1643
1644 pci_read_config_byte(dev, SIS_DETECT_REGISTER, ®);
1645 pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg | (1 << 6));
1646 pci_read_config_word(dev, PCI_DEVICE_ID, &devid);
1647 if (((devid & 0xfff0) != 0x0960) && (devid != 0x0018)) {
1648 pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg);
1649 return;
1650 }
1651
1652 /*
1653 * Ok, it now shows up as a 96x. Run the 96x quirk by hand in case
1654 * it has already been processed. (Depends on link order, which is
1655 * apparently not guaranteed)
1656 */
1657 dev->device = devid;
1658 quirk_sis_96x_smbus(dev);
1659}
1660DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, quirk_sis_503);
1661DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, quirk_sis_503);
1662
1663/*
1664 * On ASUS A8V and A8V Deluxe boards, the onboard AC97 audio controller
1665 * and MC97 modem controller are disabled when a second PCI soundcard is
1666 * present. This patch, tweaking the VT8237 ISA bridge, enables them.
1667 * -- bjd
1668 */
1669static void asus_hides_ac97_lpc(struct pci_dev *dev)
1670{
1671 u8 val;
1672 int asus_hides_ac97 = 0;
1673
1674 if (likely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) {
1675 if (dev->device == PCI_DEVICE_ID_VIA_8237)
1676 asus_hides_ac97 = 1;
1677 }
1678
1679 if (!asus_hides_ac97)
1680 return;
1681
1682 pci_read_config_byte(dev, 0x50, &val);
1683 if (val & 0xc0) {
1684 pci_write_config_byte(dev, 0x50, val & (~0xc0));
1685 pci_read_config_byte(dev, 0x50, &val);
1686 if (val & 0xc0)
1687 pci_info(dev, "Onboard AC97/MC97 devices continue to play 'hide and seek'! 0x%x\n",
1688 val);
1689 else
1690 pci_info(dev, "Enabled onboard AC97/MC97 devices\n");
1691 }
1692}
1693DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc);
1694DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc);
1695
1696#if defined(CONFIG_ATA) || defined(CONFIG_ATA_MODULE)
1697
1698/*
1699 * If we are using libata we can drive this chip properly but must do this
1700 * early on to make the additional device appear during the PCI scanning.
1701 */
1702static void quirk_jmicron_ata(struct pci_dev *pdev)
1703{
1704 u32 conf1, conf5, class;
1705 u8 hdr;
1706
1707 /* Only poke fn 0 */
1708 if (PCI_FUNC(pdev->devfn))
1709 return;
1710
1711 pci_read_config_dword(pdev, 0x40, &conf1);
1712 pci_read_config_dword(pdev, 0x80, &conf5);
1713
1714 conf1 &= ~0x00CFF302; /* Clear bit 1, 8, 9, 12-19, 22, 23 */
1715 conf5 &= ~(1 << 24); /* Clear bit 24 */
1716
1717 switch (pdev->device) {
1718 case PCI_DEVICE_ID_JMICRON_JMB360: /* SATA single port */
1719 case PCI_DEVICE_ID_JMICRON_JMB362: /* SATA dual ports */
1720 case PCI_DEVICE_ID_JMICRON_JMB364: /* SATA dual ports */
1721 /* The controller should be in single function ahci mode */
1722 conf1 |= 0x0002A100; /* Set 8, 13, 15, 17 */
1723 break;
1724
1725 case PCI_DEVICE_ID_JMICRON_JMB365:
1726 case PCI_DEVICE_ID_JMICRON_JMB366:
1727 /* Redirect IDE second PATA port to the right spot */
1728 conf5 |= (1 << 24);
1729 fallthrough;
1730 case PCI_DEVICE_ID_JMICRON_JMB361:
1731 case PCI_DEVICE_ID_JMICRON_JMB363:
1732 case PCI_DEVICE_ID_JMICRON_JMB369:
1733 /* Enable dual function mode, AHCI on fn 0, IDE fn1 */
1734 /* Set the class codes correctly and then direct IDE 0 */
1735 conf1 |= 0x00C2A1B3; /* Set 0, 1, 4, 5, 7, 8, 13, 15, 17, 22, 23 */
1736 break;
1737
1738 case PCI_DEVICE_ID_JMICRON_JMB368:
1739 /* The controller should be in single function IDE mode */
1740 conf1 |= 0x00C00000; /* Set 22, 23 */
1741 break;
1742 }
1743
1744 pci_write_config_dword(pdev, 0x40, conf1);
1745 pci_write_config_dword(pdev, 0x80, conf5);
1746
1747 /* Update pdev accordingly */
1748 pci_read_config_byte(pdev, PCI_HEADER_TYPE, &hdr);
1749 pdev->hdr_type = hdr & 0x7f;
1750 pdev->multifunction = !!(hdr & 0x80);
1751
1752 pci_read_config_dword(pdev, PCI_CLASS_REVISION, &class);
1753 pdev->class = class >> 8;
1754}
1755DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata);
1756DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata);
1757DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB362, quirk_jmicron_ata);
1758DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata);
1759DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB364, quirk_jmicron_ata);
1760DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata);
1761DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata);
1762DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata);
1763DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB369, quirk_jmicron_ata);
1764DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata);
1765DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata);
1766DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB362, quirk_jmicron_ata);
1767DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata);
1768DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB364, quirk_jmicron_ata);
1769DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata);
1770DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata);
1771DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata);
1772DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB369, quirk_jmicron_ata);
1773
1774#endif
1775
1776static void quirk_jmicron_async_suspend(struct pci_dev *dev)
1777{
1778 if (dev->multifunction) {
1779 device_disable_async_suspend(&dev->dev);
1780 pci_info(dev, "async suspend disabled to avoid multi-function power-on ordering issue\n");
1781 }
1782}
1783DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE, 8, quirk_jmicron_async_suspend);
1784DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_CLASS_STORAGE_SATA_AHCI, 0, quirk_jmicron_async_suspend);
1785DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_JMICRON, 0x2362, quirk_jmicron_async_suspend);
1786DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_JMICRON, 0x236f, quirk_jmicron_async_suspend);
1787
1788#ifdef CONFIG_X86_IO_APIC
1789static void quirk_alder_ioapic(struct pci_dev *pdev)
1790{
1791 int i;
1792
1793 if ((pdev->class >> 8) != 0xff00)
1794 return;
1795
1796 /*
1797 * The first BAR is the location of the IO-APIC... we must
1798 * not touch this (and it's already covered by the fixmap), so
1799 * forcibly insert it into the resource tree.
1800 */
1801 if (pci_resource_start(pdev, 0) && pci_resource_len(pdev, 0))
1802 insert_resource(&iomem_resource, &pdev->resource[0]);
1803
1804 /*
1805 * The next five BARs all seem to be rubbish, so just clean
1806 * them out.
1807 */
1808 for (i = 1; i < PCI_STD_NUM_BARS; i++)
1809 memset(&pdev->resource[i], 0, sizeof(pdev->resource[i]));
1810}
1811DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_EESSC, quirk_alder_ioapic);
1812#endif
1813
1814static void quirk_pcie_mch(struct pci_dev *pdev)
1815{
1816 pdev->no_msi = 1;
1817}
1818DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7520_MCH, quirk_pcie_mch);
1819DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7320_MCH, quirk_pcie_mch);
1820DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7525_MCH, quirk_pcie_mch);
1821
1822DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_HUAWEI, 0x1610, PCI_CLASS_BRIDGE_PCI, 8, quirk_pcie_mch);
1823
1824/*
1825 * It's possible for the MSI to get corrupted if SHPC and ACPI are used
1826 * together on certain PXH-based systems.
1827 */
1828static void quirk_pcie_pxh(struct pci_dev *dev)
1829{
1830 dev->no_msi = 1;
1831 pci_warn(dev, "PXH quirk detected; SHPC device MSI disabled\n");
1832}
1833DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_0, quirk_pcie_pxh);
1834DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_1, quirk_pcie_pxh);
1835DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_pcie_pxh);
1836DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_pcie_pxh);
1837DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_pcie_pxh);
1838
1839/*
1840 * Some Intel PCI Express chipsets have trouble with downstream device
1841 * power management.
1842 */
1843static void quirk_intel_pcie_pm(struct pci_dev *dev)
1844{
1845 pci_pm_d3hot_delay = 120;
1846 dev->no_d1d2 = 1;
1847}
1848DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e2, quirk_intel_pcie_pm);
1849DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e3, quirk_intel_pcie_pm);
1850DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e4, quirk_intel_pcie_pm);
1851DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e5, quirk_intel_pcie_pm);
1852DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e6, quirk_intel_pcie_pm);
1853DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e7, quirk_intel_pcie_pm);
1854DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f7, quirk_intel_pcie_pm);
1855DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f8, quirk_intel_pcie_pm);
1856DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f9, quirk_intel_pcie_pm);
1857DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25fa, quirk_intel_pcie_pm);
1858DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2601, quirk_intel_pcie_pm);
1859DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2602, quirk_intel_pcie_pm);
1860DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2603, quirk_intel_pcie_pm);
1861DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2604, quirk_intel_pcie_pm);
1862DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2605, quirk_intel_pcie_pm);
1863DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2606, quirk_intel_pcie_pm);
1864DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2607, quirk_intel_pcie_pm);
1865DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2608, quirk_intel_pcie_pm);
1866DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2609, quirk_intel_pcie_pm);
1867DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260a, quirk_intel_pcie_pm);
1868DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260b, quirk_intel_pcie_pm);
1869
1870static void quirk_d3hot_delay(struct pci_dev *dev, unsigned int delay)
1871{
1872 if (dev->d3hot_delay >= delay)
1873 return;
1874
1875 dev->d3hot_delay = delay;
1876 pci_info(dev, "extending delay after power-on from D3hot to %d msec\n",
1877 dev->d3hot_delay);
1878}
1879
1880static void quirk_radeon_pm(struct pci_dev *dev)
1881{
1882 if (dev->subsystem_vendor == PCI_VENDOR_ID_APPLE &&
1883 dev->subsystem_device == 0x00e2)
1884 quirk_d3hot_delay(dev, 20);
1885}
1886DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x6741, quirk_radeon_pm);
1887
1888/*
1889 * Ryzen5/7 XHCI controllers fail upon resume from runtime suspend or s2idle.
1890 * https://bugzilla.kernel.org/show_bug.cgi?id=205587
1891 *
1892 * The kernel attempts to transition these devices to D3cold, but that seems
1893 * to be ineffective on the platforms in question; the PCI device appears to
1894 * remain on in D3hot state. The D3hot-to-D0 transition then requires an
1895 * extended delay in order to succeed.
1896 */
1897static void quirk_ryzen_xhci_d3hot(struct pci_dev *dev)
1898{
1899 quirk_d3hot_delay(dev, 20);
1900}
1901DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x15e0, quirk_ryzen_xhci_d3hot);
1902DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x15e1, quirk_ryzen_xhci_d3hot);
1903DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x1639, quirk_ryzen_xhci_d3hot);
1904
1905#ifdef CONFIG_X86_IO_APIC
1906static int dmi_disable_ioapicreroute(const struct dmi_system_id *d)
1907{
1908 noioapicreroute = 1;
1909 pr_info("%s detected: disable boot interrupt reroute\n", d->ident);
1910
1911 return 0;
1912}
1913
1914static const struct dmi_system_id boot_interrupt_dmi_table[] = {
1915 /*
1916 * Systems to exclude from boot interrupt reroute quirks
1917 */
1918 {
1919 .callback = dmi_disable_ioapicreroute,
1920 .ident = "ASUSTek Computer INC. M2N-LR",
1921 .matches = {
1922 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTek Computer INC."),
1923 DMI_MATCH(DMI_PRODUCT_NAME, "M2N-LR"),
1924 },
1925 },
1926 {}
1927};
1928
1929/*
1930 * Boot interrupts on some chipsets cannot be turned off. For these chipsets,
1931 * remap the original interrupt in the Linux kernel to the boot interrupt, so
1932 * that a PCI device's interrupt handler is installed on the boot interrupt
1933 * line instead.
1934 */
1935static void quirk_reroute_to_boot_interrupts_intel(struct pci_dev *dev)
1936{
1937 dmi_check_system(boot_interrupt_dmi_table);
1938 if (noioapicquirk || noioapicreroute)
1939 return;
1940
1941 dev->irq_reroute_variant = INTEL_IRQ_REROUTE_VARIANT;
1942 pci_info(dev, "rerouting interrupts for [%04x:%04x]\n",
1943 dev->vendor, dev->device);
1944}
1945DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_0, quirk_reroute_to_boot_interrupts_intel);
1946DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_1, quirk_reroute_to_boot_interrupts_intel);
1947DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB2_0, quirk_reroute_to_boot_interrupts_intel);
1948DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_reroute_to_boot_interrupts_intel);
1949DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_reroute_to_boot_interrupts_intel);
1950DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_reroute_to_boot_interrupts_intel);
1951DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_0, quirk_reroute_to_boot_interrupts_intel);
1952DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_1, quirk_reroute_to_boot_interrupts_intel);
1953DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_0, quirk_reroute_to_boot_interrupts_intel);
1954DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_1, quirk_reroute_to_boot_interrupts_intel);
1955DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB2_0, quirk_reroute_to_boot_interrupts_intel);
1956DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_reroute_to_boot_interrupts_intel);
1957DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_reroute_to_boot_interrupts_intel);
1958DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_reroute_to_boot_interrupts_intel);
1959DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_0, quirk_reroute_to_boot_interrupts_intel);
1960DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_1, quirk_reroute_to_boot_interrupts_intel);
1961
1962/*
1963 * On some chipsets we can disable the generation of legacy INTx boot
1964 * interrupts.
1965 */
1966
1967/*
1968 * IO-APIC1 on 6300ESB generates boot interrupts, see Intel order no
1969 * 300641-004US, section 5.7.3.
1970 *
1971 * Core IO on Xeon E5 1600/2600/4600, see Intel order no 326509-003.
1972 * Core IO on Xeon E5 v2, see Intel order no 329188-003.
1973 * Core IO on Xeon E7 v2, see Intel order no 329595-002.
1974 * Core IO on Xeon E5 v3, see Intel order no 330784-003.
1975 * Core IO on Xeon E7 v3, see Intel order no 332315-001US.
1976 * Core IO on Xeon E5 v4, see Intel order no 333810-002US.
1977 * Core IO on Xeon E7 v4, see Intel order no 332315-001US.
1978 * Core IO on Xeon D-1500, see Intel order no 332051-001.
1979 * Core IO on Xeon Scalable, see Intel order no 610950.
1980 */
1981#define INTEL_6300_IOAPIC_ABAR 0x40 /* Bus 0, Dev 29, Func 5 */
1982#define INTEL_6300_DISABLE_BOOT_IRQ (1<<14)
1983
1984#define INTEL_CIPINTRC_CFG_OFFSET 0x14C /* Bus 0, Dev 5, Func 0 */
1985#define INTEL_CIPINTRC_DIS_INTX_ICH (1<<25)
1986
1987static void quirk_disable_intel_boot_interrupt(struct pci_dev *dev)
1988{
1989 u16 pci_config_word;
1990 u32 pci_config_dword;
1991
1992 if (noioapicquirk)
1993 return;
1994
1995 switch (dev->device) {
1996 case PCI_DEVICE_ID_INTEL_ESB_10:
1997 pci_read_config_word(dev, INTEL_6300_IOAPIC_ABAR,
1998 &pci_config_word);
1999 pci_config_word |= INTEL_6300_DISABLE_BOOT_IRQ;
2000 pci_write_config_word(dev, INTEL_6300_IOAPIC_ABAR,
2001 pci_config_word);
2002 break;
2003 case 0x3c28: /* Xeon E5 1600/2600/4600 */
2004 case 0x0e28: /* Xeon E5/E7 V2 */
2005 case 0x2f28: /* Xeon E5/E7 V3,V4 */
2006 case 0x6f28: /* Xeon D-1500 */
2007 case 0x2034: /* Xeon Scalable Family */
2008 pci_read_config_dword(dev, INTEL_CIPINTRC_CFG_OFFSET,
2009 &pci_config_dword);
2010 pci_config_dword |= INTEL_CIPINTRC_DIS_INTX_ICH;
2011 pci_write_config_dword(dev, INTEL_CIPINTRC_CFG_OFFSET,
2012 pci_config_dword);
2013 break;
2014 default:
2015 return;
2016 }
2017 pci_info(dev, "disabled boot interrupts on device [%04x:%04x]\n",
2018 dev->vendor, dev->device);
2019}
2020/*
2021 * Device 29 Func 5 Device IDs of IO-APIC
2022 * containing ABAR—APIC1 Alternate Base Address Register
2023 */
2024DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_10,
2025 quirk_disable_intel_boot_interrupt);
2026DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_10,
2027 quirk_disable_intel_boot_interrupt);
2028
2029/*
2030 * Device 5 Func 0 Device IDs of Core IO modules/hubs
2031 * containing Coherent Interface Protocol Interrupt Control
2032 *
2033 * Device IDs obtained from volume 2 datasheets of commented
2034 * families above.
2035 */
2036DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x3c28,
2037 quirk_disable_intel_boot_interrupt);
2038DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0e28,
2039 quirk_disable_intel_boot_interrupt);
2040DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2f28,
2041 quirk_disable_intel_boot_interrupt);
2042DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x6f28,
2043 quirk_disable_intel_boot_interrupt);
2044DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2034,
2045 quirk_disable_intel_boot_interrupt);
2046DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, 0x3c28,
2047 quirk_disable_intel_boot_interrupt);
2048DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, 0x0e28,
2049 quirk_disable_intel_boot_interrupt);
2050DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, 0x2f28,
2051 quirk_disable_intel_boot_interrupt);
2052DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, 0x6f28,
2053 quirk_disable_intel_boot_interrupt);
2054DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, 0x2034,
2055 quirk_disable_intel_boot_interrupt);
2056
2057/* Disable boot interrupts on HT-1000 */
2058#define BC_HT1000_FEATURE_REG 0x64
2059#define BC_HT1000_PIC_REGS_ENABLE (1<<0)
2060#define BC_HT1000_MAP_IDX 0xC00
2061#define BC_HT1000_MAP_DATA 0xC01
2062
2063static void quirk_disable_broadcom_boot_interrupt(struct pci_dev *dev)
2064{
2065 u32 pci_config_dword;
2066 u8 irq;
2067
2068 if (noioapicquirk)
2069 return;
2070
2071 pci_read_config_dword(dev, BC_HT1000_FEATURE_REG, &pci_config_dword);
2072 pci_write_config_dword(dev, BC_HT1000_FEATURE_REG, pci_config_dword |
2073 BC_HT1000_PIC_REGS_ENABLE);
2074
2075 for (irq = 0x10; irq < 0x10 + 32; irq++) {
2076 outb(irq, BC_HT1000_MAP_IDX);
2077 outb(0x00, BC_HT1000_MAP_DATA);
2078 }
2079
2080 pci_write_config_dword(dev, BC_HT1000_FEATURE_REG, pci_config_dword);
2081
2082 pci_info(dev, "disabled boot interrupts on device [%04x:%04x]\n",
2083 dev->vendor, dev->device);
2084}
2085DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000SB, quirk_disable_broadcom_boot_interrupt);
2086DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000SB, quirk_disable_broadcom_boot_interrupt);
2087
2088/* Disable boot interrupts on AMD and ATI chipsets */
2089
2090/*
2091 * NOIOAMODE needs to be disabled to disable "boot interrupts". For AMD 8131
2092 * rev. A0 and B0, NOIOAMODE needs to be disabled anyway to fix IO-APIC mode
2093 * (due to an erratum).
2094 */
2095#define AMD_813X_MISC 0x40
2096#define AMD_813X_NOIOAMODE (1<<0)
2097#define AMD_813X_REV_B1 0x12
2098#define AMD_813X_REV_B2 0x13
2099
2100static void quirk_disable_amd_813x_boot_interrupt(struct pci_dev *dev)
2101{
2102 u32 pci_config_dword;
2103
2104 if (noioapicquirk)
2105 return;
2106 if ((dev->revision == AMD_813X_REV_B1) ||
2107 (dev->revision == AMD_813X_REV_B2))
2108 return;
2109
2110 pci_read_config_dword(dev, AMD_813X_MISC, &pci_config_dword);
2111 pci_config_dword &= ~AMD_813X_NOIOAMODE;
2112 pci_write_config_dword(dev, AMD_813X_MISC, pci_config_dword);
2113
2114 pci_info(dev, "disabled boot interrupts on device [%04x:%04x]\n",
2115 dev->vendor, dev->device);
2116}
2117DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
2118DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
2119DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
2120DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE, quirk_disable_amd_813x_boot_interrupt);
2121
2122#define AMD_8111_PCI_IRQ_ROUTING 0x56
2123
2124static void quirk_disable_amd_8111_boot_interrupt(struct pci_dev *dev)
2125{
2126 u16 pci_config_word;
2127
2128 if (noioapicquirk)
2129 return;
2130
2131 pci_read_config_word(dev, AMD_8111_PCI_IRQ_ROUTING, &pci_config_word);
2132 if (!pci_config_word) {
2133 pci_info(dev, "boot interrupts on device [%04x:%04x] already disabled\n",
2134 dev->vendor, dev->device);
2135 return;
2136 }
2137 pci_write_config_word(dev, AMD_8111_PCI_IRQ_ROUTING, 0);
2138 pci_info(dev, "disabled boot interrupts on device [%04x:%04x]\n",
2139 dev->vendor, dev->device);
2140}
2141DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_SMBUS, quirk_disable_amd_8111_boot_interrupt);
2142DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_SMBUS, quirk_disable_amd_8111_boot_interrupt);
2143#endif /* CONFIG_X86_IO_APIC */
2144
2145/*
2146 * Toshiba TC86C001 IDE controller reports the standard 8-byte BAR0 size
2147 * but the PIO transfers won't work if BAR0 falls at the odd 8 bytes.
2148 * Re-allocate the region if needed...
2149 */
2150static void quirk_tc86c001_ide(struct pci_dev *dev)
2151{
2152 struct resource *r = &dev->resource[0];
2153
2154 if (r->start & 0x8) {
2155 r->flags |= IORESOURCE_UNSET;
2156 r->start = 0;
2157 r->end = 0xf;
2158 }
2159}
2160DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA_2,
2161 PCI_DEVICE_ID_TOSHIBA_TC86C001_IDE,
2162 quirk_tc86c001_ide);
2163
2164/*
2165 * PLX PCI 9050 PCI Target bridge controller has an erratum that prevents the
2166 * local configuration registers accessible via BAR0 (memory) or BAR1 (i/o)
2167 * being read correctly if bit 7 of the base address is set.
2168 * The BAR0 or BAR1 region may be disabled (size 0) or enabled (size 128).
2169 * Re-allocate the regions to a 256-byte boundary if necessary.
2170 */
2171static void quirk_plx_pci9050(struct pci_dev *dev)
2172{
2173 unsigned int bar;
2174
2175 /* Fixed in revision 2 (PCI 9052). */
2176 if (dev->revision >= 2)
2177 return;
2178 for (bar = 0; bar <= 1; bar++)
2179 if (pci_resource_len(dev, bar) == 0x80 &&
2180 (pci_resource_start(dev, bar) & 0x80)) {
2181 struct resource *r = &dev->resource[bar];
2182 pci_info(dev, "Re-allocating PLX PCI 9050 BAR %u to length 256 to avoid bit 7 bug\n",
2183 bar);
2184 r->flags |= IORESOURCE_UNSET;
2185 r->start = 0;
2186 r->end = 0xff;
2187 }
2188}
2189DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050,
2190 quirk_plx_pci9050);
2191/*
2192 * The following Meilhaus (vendor ID 0x1402) device IDs (amongst others)
2193 * may be using the PLX PCI 9050: 0x0630, 0x0940, 0x0950, 0x0960, 0x100b,
2194 * 0x1400, 0x140a, 0x140b, 0x14e0, 0x14ea, 0x14eb, 0x1604, 0x1608, 0x160c,
2195 * 0x168f, 0x2000, 0x2600, 0x3000, 0x810a, 0x810b.
2196 *
2197 * Currently, device IDs 0x2000 and 0x2600 are used by the Comedi "me_daq"
2198 * driver.
2199 */
2200DECLARE_PCI_FIXUP_HEADER(0x1402, 0x2000, quirk_plx_pci9050);
2201DECLARE_PCI_FIXUP_HEADER(0x1402, 0x2600, quirk_plx_pci9050);
2202
2203static void quirk_netmos(struct pci_dev *dev)
2204{
2205 unsigned int num_parallel = (dev->subsystem_device & 0xf0) >> 4;
2206 unsigned int num_serial = dev->subsystem_device & 0xf;
2207
2208 /*
2209 * These Netmos parts are multiport serial devices with optional
2210 * parallel ports. Even when parallel ports are present, they
2211 * are identified as class SERIAL, which means the serial driver
2212 * will claim them. To prevent this, mark them as class OTHER.
2213 * These combo devices should be claimed by parport_serial.
2214 *
2215 * The subdevice ID is of the form 0x00PS, where <P> is the number
2216 * of parallel ports and <S> is the number of serial ports.
2217 */
2218 switch (dev->device) {
2219 case PCI_DEVICE_ID_NETMOS_9835:
2220 /* Well, this rule doesn't hold for the following 9835 device */
2221 if (dev->subsystem_vendor == PCI_VENDOR_ID_IBM &&
2222 dev->subsystem_device == 0x0299)
2223 return;
2224 fallthrough;
2225 case PCI_DEVICE_ID_NETMOS_9735:
2226 case PCI_DEVICE_ID_NETMOS_9745:
2227 case PCI_DEVICE_ID_NETMOS_9845:
2228 case PCI_DEVICE_ID_NETMOS_9855:
2229 if (num_parallel) {
2230 pci_info(dev, "Netmos %04x (%u parallel, %u serial); changing class SERIAL to OTHER (use parport_serial)\n",
2231 dev->device, num_parallel, num_serial);
2232 dev->class = (PCI_CLASS_COMMUNICATION_OTHER << 8) |
2233 (dev->class & 0xff);
2234 }
2235 }
2236}
2237DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_NETMOS, PCI_ANY_ID,
2238 PCI_CLASS_COMMUNICATION_SERIAL, 8, quirk_netmos);
2239
2240static void quirk_e100_interrupt(struct pci_dev *dev)
2241{
2242 u16 command, pmcsr;
2243 u8 __iomem *csr;
2244 u8 cmd_hi;
2245
2246 switch (dev->device) {
2247 /* PCI IDs taken from drivers/net/e100.c */
2248 case 0x1029:
2249 case 0x1030 ... 0x1034:
2250 case 0x1038 ... 0x103E:
2251 case 0x1050 ... 0x1057:
2252 case 0x1059:
2253 case 0x1064 ... 0x106B:
2254 case 0x1091 ... 0x1095:
2255 case 0x1209:
2256 case 0x1229:
2257 case 0x2449:
2258 case 0x2459:
2259 case 0x245D:
2260 case 0x27DC:
2261 break;
2262 default:
2263 return;
2264 }
2265
2266 /*
2267 * Some firmware hands off the e100 with interrupts enabled,
2268 * which can cause a flood of interrupts if packets are
2269 * received before the driver attaches to the device. So
2270 * disable all e100 interrupts here. The driver will
2271 * re-enable them when it's ready.
2272 */
2273 pci_read_config_word(dev, PCI_COMMAND, &command);
2274
2275 if (!(command & PCI_COMMAND_MEMORY) || !pci_resource_start(dev, 0))
2276 return;
2277
2278 /*
2279 * Check that the device is in the D0 power state. If it's not,
2280 * there is no point to look any further.
2281 */
2282 if (dev->pm_cap) {
2283 pci_read_config_word(dev, dev->pm_cap + PCI_PM_CTRL, &pmcsr);
2284 if ((pmcsr & PCI_PM_CTRL_STATE_MASK) != PCI_D0)
2285 return;
2286 }
2287
2288 /* Convert from PCI bus to resource space. */
2289 csr = ioremap(pci_resource_start(dev, 0), 8);
2290 if (!csr) {
2291 pci_warn(dev, "Can't map e100 registers\n");
2292 return;
2293 }
2294
2295 cmd_hi = readb(csr + 3);
2296 if (cmd_hi == 0) {
2297 pci_warn(dev, "Firmware left e100 interrupts enabled; disabling\n");
2298 writeb(1, csr + 3);
2299 }
2300
2301 iounmap(csr);
2302}
2303DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_INTEL, PCI_ANY_ID,
2304 PCI_CLASS_NETWORK_ETHERNET, 8, quirk_e100_interrupt);
2305
2306/*
2307 * The 82575 and 82598 may experience data corruption issues when transitioning
2308 * out of L0S. To prevent this we need to disable L0S on the PCIe link.
2309 */
2310static void quirk_disable_aspm_l0s(struct pci_dev *dev)
2311{
2312 pci_info(dev, "Disabling L0s\n");
2313 pci_disable_link_state(dev, PCIE_LINK_STATE_L0S);
2314}
2315DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10a7, quirk_disable_aspm_l0s);
2316DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10a9, quirk_disable_aspm_l0s);
2317DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10b6, quirk_disable_aspm_l0s);
2318DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c6, quirk_disable_aspm_l0s);
2319DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c7, quirk_disable_aspm_l0s);
2320DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c8, quirk_disable_aspm_l0s);
2321DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10d6, quirk_disable_aspm_l0s);
2322DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10db, quirk_disable_aspm_l0s);
2323DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10dd, quirk_disable_aspm_l0s);
2324DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10e1, quirk_disable_aspm_l0s);
2325DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10ec, quirk_disable_aspm_l0s);
2326DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f1, quirk_disable_aspm_l0s);
2327DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f4, quirk_disable_aspm_l0s);
2328DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1508, quirk_disable_aspm_l0s);
2329
2330static void quirk_disable_aspm_l0s_l1(struct pci_dev *dev)
2331{
2332 pci_info(dev, "Disabling ASPM L0s/L1\n");
2333 pci_disable_link_state(dev, PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1);
2334}
2335
2336/*
2337 * ASM1083/1085 PCIe-PCI bridge devices cause AER timeout errors on the
2338 * upstream PCIe root port when ASPM is enabled. At least L0s mode is affected;
2339 * disable both L0s and L1 for now to be safe.
2340 */
2341DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ASMEDIA, 0x1080, quirk_disable_aspm_l0s_l1);
2342
2343/*
2344 * Some Pericom PCIe-to-PCI bridges in reverse mode need the PCIe Retrain
2345 * Link bit cleared after starting the link retrain process to allow this
2346 * process to finish.
2347 *
2348 * Affected devices: PI7C9X110, PI7C9X111SL, PI7C9X130. See also the
2349 * Pericom Errata Sheet PI7C9X111SLB_errata_rev1.2_102711.pdf.
2350 */
2351static void quirk_enable_clear_retrain_link(struct pci_dev *dev)
2352{
2353 dev->clear_retrain_link = 1;
2354 pci_info(dev, "Enable PCIe Retrain Link quirk\n");
2355}
2356DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_PERICOM, 0xe110, quirk_enable_clear_retrain_link);
2357DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_PERICOM, 0xe111, quirk_enable_clear_retrain_link);
2358DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_PERICOM, 0xe130, quirk_enable_clear_retrain_link);
2359
2360static void fixup_rev1_53c810(struct pci_dev *dev)
2361{
2362 u32 class = dev->class;
2363
2364 /*
2365 * rev 1 ncr53c810 chips don't set the class at all which means
2366 * they don't get their resources remapped. Fix that here.
2367 */
2368 if (class)
2369 return;
2370
2371 dev->class = PCI_CLASS_STORAGE_SCSI << 8;
2372 pci_info(dev, "NCR 53c810 rev 1 PCI class overridden (%#08x -> %#08x)\n",
2373 class, dev->class);
2374}
2375DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NCR, PCI_DEVICE_ID_NCR_53C810, fixup_rev1_53c810);
2376
2377/* Enable 1k I/O space granularity on the Intel P64H2 */
2378static void quirk_p64h2_1k_io(struct pci_dev *dev)
2379{
2380 u16 en1k;
2381
2382 pci_read_config_word(dev, 0x40, &en1k);
2383
2384 if (en1k & 0x200) {
2385 pci_info(dev, "Enable I/O Space to 1KB granularity\n");
2386 dev->io_window_1k = 1;
2387 }
2388}
2389DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1460, quirk_p64h2_1k_io);
2390
2391/*
2392 * Under some circumstances, AER is not linked with extended capabilities.
2393 * Force it to be linked by setting the corresponding control bit in the
2394 * config space.
2395 */
2396static void quirk_nvidia_ck804_pcie_aer_ext_cap(struct pci_dev *dev)
2397{
2398 uint8_t b;
2399
2400 if (pci_read_config_byte(dev, 0xf41, &b) == 0) {
2401 if (!(b & 0x20)) {
2402 pci_write_config_byte(dev, 0xf41, b | 0x20);
2403 pci_info(dev, "Linking AER extended capability\n");
2404 }
2405 }
2406}
2407DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
2408 quirk_nvidia_ck804_pcie_aer_ext_cap);
2409DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
2410 quirk_nvidia_ck804_pcie_aer_ext_cap);
2411
2412static void quirk_via_cx700_pci_parking_caching(struct pci_dev *dev)
2413{
2414 /*
2415 * Disable PCI Bus Parking and PCI Master read caching on CX700
2416 * which causes unspecified timing errors with a VT6212L on the PCI
2417 * bus leading to USB2.0 packet loss.
2418 *
2419 * This quirk is only enabled if a second (on the external PCI bus)
2420 * VT6212L is found -- the CX700 core itself also contains a USB
2421 * host controller with the same PCI ID as the VT6212L.
2422 */
2423
2424 /* Count VT6212L instances */
2425 struct pci_dev *p = pci_get_device(PCI_VENDOR_ID_VIA,
2426 PCI_DEVICE_ID_VIA_8235_USB_2, NULL);
2427 uint8_t b;
2428
2429 /*
2430 * p should contain the first (internal) VT6212L -- see if we have
2431 * an external one by searching again.
2432 */
2433 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235_USB_2, p);
2434 if (!p)
2435 return;
2436 pci_dev_put(p);
2437
2438 if (pci_read_config_byte(dev, 0x76, &b) == 0) {
2439 if (b & 0x40) {
2440 /* Turn off PCI Bus Parking */
2441 pci_write_config_byte(dev, 0x76, b ^ 0x40);
2442
2443 pci_info(dev, "Disabling VIA CX700 PCI parking\n");
2444 }
2445 }
2446
2447 if (pci_read_config_byte(dev, 0x72, &b) == 0) {
2448 if (b != 0) {
2449 /* Turn off PCI Master read caching */
2450 pci_write_config_byte(dev, 0x72, 0x0);
2451
2452 /* Set PCI Master Bus time-out to "1x16 PCLK" */
2453 pci_write_config_byte(dev, 0x75, 0x1);
2454
2455 /* Disable "Read FIFO Timer" */
2456 pci_write_config_byte(dev, 0x77, 0x0);
2457
2458 pci_info(dev, "Disabling VIA CX700 PCI caching\n");
2459 }
2460 }
2461}
2462DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, 0x324e, quirk_via_cx700_pci_parking_caching);
2463
2464static void quirk_brcm_5719_limit_mrrs(struct pci_dev *dev)
2465{
2466 u32 rev;
2467
2468 pci_read_config_dword(dev, 0xf4, &rev);
2469
2470 /* Only CAP the MRRS if the device is a 5719 A0 */
2471 if (rev == 0x05719000) {
2472 int readrq = pcie_get_readrq(dev);
2473 if (readrq > 2048)
2474 pcie_set_readrq(dev, 2048);
2475 }
2476}
2477DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_BROADCOM,
2478 PCI_DEVICE_ID_TIGON3_5719,
2479 quirk_brcm_5719_limit_mrrs);
2480
2481/*
2482 * Originally in EDAC sources for i82875P: Intel tells BIOS developers to
2483 * hide device 6 which configures the overflow device access containing the
2484 * DRBs - this is where we expose device 6.
2485 * http://www.x86-secret.com/articles/tweak/pat/patsecrets-2.htm
2486 */
2487static void quirk_unhide_mch_dev6(struct pci_dev *dev)
2488{
2489 u8 reg;
2490
2491 if (pci_read_config_byte(dev, 0xF4, ®) == 0 && !(reg & 0x02)) {
2492 pci_info(dev, "Enabling MCH 'Overflow' Device\n");
2493 pci_write_config_byte(dev, 0xF4, reg | 0x02);
2494 }
2495}
2496DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82865_HB,
2497 quirk_unhide_mch_dev6);
2498DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82875_HB,
2499 quirk_unhide_mch_dev6);
2500
2501#ifdef CONFIG_PCI_MSI
2502/*
2503 * Some chipsets do not support MSI. We cannot easily rely on setting
2504 * PCI_BUS_FLAGS_NO_MSI in its bus flags because there are actually some
2505 * other buses controlled by the chipset even if Linux is not aware of it.
2506 * Instead of setting the flag on all buses in the machine, simply disable
2507 * MSI globally.
2508 */
2509static void quirk_disable_all_msi(struct pci_dev *dev)
2510{
2511 pci_no_msi();
2512 pci_warn(dev, "MSI quirk detected; MSI disabled\n");
2513}
2514DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_GCNB_LE, quirk_disable_all_msi);
2515DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS400_200, quirk_disable_all_msi);
2516DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS480, quirk_disable_all_msi);
2517DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3336, quirk_disable_all_msi);
2518DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3351, quirk_disable_all_msi);
2519DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3364, quirk_disable_all_msi);
2520DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8380_0, quirk_disable_all_msi);
2521DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, 0x0761, quirk_disable_all_msi);
2522DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SAMSUNG, 0xa5e3, quirk_disable_all_msi);
2523
2524/* Disable MSI on chipsets that are known to not support it */
2525static void quirk_disable_msi(struct pci_dev *dev)
2526{
2527 if (dev->subordinate) {
2528 pci_warn(dev, "MSI quirk detected; subordinate MSI disabled\n");
2529 dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI;
2530 }
2531}
2532DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_msi);
2533DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, 0xa238, quirk_disable_msi);
2534DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x5a3f, quirk_disable_msi);
2535
2536/*
2537 * The APC bridge device in AMD 780 family northbridges has some random
2538 * OEM subsystem ID in its vendor ID register (erratum 18), so instead
2539 * we use the possible vendor/device IDs of the host bridge for the
2540 * declared quirk, and search for the APC bridge by slot number.
2541 */
2542static void quirk_amd_780_apc_msi(struct pci_dev *host_bridge)
2543{
2544 struct pci_dev *apc_bridge;
2545
2546 apc_bridge = pci_get_slot(host_bridge->bus, PCI_DEVFN(1, 0));
2547 if (apc_bridge) {
2548 if (apc_bridge->device == 0x9602)
2549 quirk_disable_msi(apc_bridge);
2550 pci_dev_put(apc_bridge);
2551 }
2552}
2553DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x9600, quirk_amd_780_apc_msi);
2554DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x9601, quirk_amd_780_apc_msi);
2555
2556/*
2557 * Go through the list of HyperTransport capabilities and return 1 if a HT
2558 * MSI capability is found and enabled.
2559 */
2560static int msi_ht_cap_enabled(struct pci_dev *dev)
2561{
2562 int pos, ttl = PCI_FIND_CAP_TTL;
2563
2564 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2565 while (pos && ttl--) {
2566 u8 flags;
2567
2568 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2569 &flags) == 0) {
2570 pci_info(dev, "Found %s HT MSI Mapping\n",
2571 flags & HT_MSI_FLAGS_ENABLE ?
2572 "enabled" : "disabled");
2573 return (flags & HT_MSI_FLAGS_ENABLE) != 0;
2574 }
2575
2576 pos = pci_find_next_ht_capability(dev, pos,
2577 HT_CAPTYPE_MSI_MAPPING);
2578 }
2579 return 0;
2580}
2581
2582/* Check the HyperTransport MSI mapping to know whether MSI is enabled or not */
2583static void quirk_msi_ht_cap(struct pci_dev *dev)
2584{
2585 if (!msi_ht_cap_enabled(dev))
2586 quirk_disable_msi(dev);
2587}
2588DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT2000_PCIE,
2589 quirk_msi_ht_cap);
2590
2591/*
2592 * The nVidia CK804 chipset may have 2 HT MSI mappings. MSI is supported
2593 * if the MSI capability is set in any of these mappings.
2594 */
2595static void quirk_nvidia_ck804_msi_ht_cap(struct pci_dev *dev)
2596{
2597 struct pci_dev *pdev;
2598
2599 /*
2600 * Check HT MSI cap on this chipset and the root one. A single one
2601 * having MSI is enough to be sure that MSI is supported.
2602 */
2603 pdev = pci_get_slot(dev->bus, 0);
2604 if (!pdev)
2605 return;
2606 if (!msi_ht_cap_enabled(pdev))
2607 quirk_msi_ht_cap(dev);
2608 pci_dev_put(pdev);
2609}
2610DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
2611 quirk_nvidia_ck804_msi_ht_cap);
2612
2613/* Force enable MSI mapping capability on HT bridges */
2614static void ht_enable_msi_mapping(struct pci_dev *dev)
2615{
2616 int pos, ttl = PCI_FIND_CAP_TTL;
2617
2618 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2619 while (pos && ttl--) {
2620 u8 flags;
2621
2622 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2623 &flags) == 0) {
2624 pci_info(dev, "Enabling HT MSI Mapping\n");
2625
2626 pci_write_config_byte(dev, pos + HT_MSI_FLAGS,
2627 flags | HT_MSI_FLAGS_ENABLE);
2628 }
2629 pos = pci_find_next_ht_capability(dev, pos,
2630 HT_CAPTYPE_MSI_MAPPING);
2631 }
2632}
2633DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SERVERWORKS,
2634 PCI_DEVICE_ID_SERVERWORKS_HT1000_PXB,
2635 ht_enable_msi_mapping);
2636DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE,
2637 ht_enable_msi_mapping);
2638
2639/*
2640 * The P5N32-SLI motherboards from Asus have a problem with MSI
2641 * for the MCP55 NIC. It is not yet determined whether the MSI problem
2642 * also affects other devices. As for now, turn off MSI for this device.
2643 */
2644static void nvenet_msi_disable(struct pci_dev *dev)
2645{
2646 const char *board_name = dmi_get_system_info(DMI_BOARD_NAME);
2647
2648 if (board_name &&
2649 (strstr(board_name, "P5N32-SLI PREMIUM") ||
2650 strstr(board_name, "P5N32-E SLI"))) {
2651 pci_info(dev, "Disabling MSI for MCP55 NIC on P5N32-SLI\n");
2652 dev->no_msi = 1;
2653 }
2654}
2655DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA,
2656 PCI_DEVICE_ID_NVIDIA_NVENET_15,
2657 nvenet_msi_disable);
2658
2659/*
2660 * PCIe spec r4.0 sec 7.7.1.2 and sec 7.7.2.2 say that if MSI/MSI-X is enabled,
2661 * then the device can't use INTx interrupts. Tegra's PCIe root ports don't
2662 * generate MSI interrupts for PME and AER events instead only INTx interrupts
2663 * are generated. Though Tegra's PCIe root ports can generate MSI interrupts
2664 * for other events, since PCIe specificiation doesn't support using a mix of
2665 * INTx and MSI/MSI-X, it is required to disable MSI interrupts to avoid port
2666 * service drivers registering their respective ISRs for MSIs.
2667 */
2668static void pci_quirk_nvidia_tegra_disable_rp_msi(struct pci_dev *dev)
2669{
2670 dev->no_msi = 1;
2671}
2672DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x1ad0,
2673 PCI_CLASS_BRIDGE_PCI, 8,
2674 pci_quirk_nvidia_tegra_disable_rp_msi);
2675DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x1ad1,
2676 PCI_CLASS_BRIDGE_PCI, 8,
2677 pci_quirk_nvidia_tegra_disable_rp_msi);
2678DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x1ad2,
2679 PCI_CLASS_BRIDGE_PCI, 8,
2680 pci_quirk_nvidia_tegra_disable_rp_msi);
2681DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0bf0,
2682 PCI_CLASS_BRIDGE_PCI, 8,
2683 pci_quirk_nvidia_tegra_disable_rp_msi);
2684DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0bf1,
2685 PCI_CLASS_BRIDGE_PCI, 8,
2686 pci_quirk_nvidia_tegra_disable_rp_msi);
2687DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0e1c,
2688 PCI_CLASS_BRIDGE_PCI, 8,
2689 pci_quirk_nvidia_tegra_disable_rp_msi);
2690DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0e1d,
2691 PCI_CLASS_BRIDGE_PCI, 8,
2692 pci_quirk_nvidia_tegra_disable_rp_msi);
2693DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0e12,
2694 PCI_CLASS_BRIDGE_PCI, 8,
2695 pci_quirk_nvidia_tegra_disable_rp_msi);
2696DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0e13,
2697 PCI_CLASS_BRIDGE_PCI, 8,
2698 pci_quirk_nvidia_tegra_disable_rp_msi);
2699DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0fae,
2700 PCI_CLASS_BRIDGE_PCI, 8,
2701 pci_quirk_nvidia_tegra_disable_rp_msi);
2702DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0faf,
2703 PCI_CLASS_BRIDGE_PCI, 8,
2704 pci_quirk_nvidia_tegra_disable_rp_msi);
2705DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x10e5,
2706 PCI_CLASS_BRIDGE_PCI, 8,
2707 pci_quirk_nvidia_tegra_disable_rp_msi);
2708DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x10e6,
2709 PCI_CLASS_BRIDGE_PCI, 8,
2710 pci_quirk_nvidia_tegra_disable_rp_msi);
2711
2712/*
2713 * Some versions of the MCP55 bridge from Nvidia have a legacy IRQ routing
2714 * config register. This register controls the routing of legacy
2715 * interrupts from devices that route through the MCP55. If this register
2716 * is misprogrammed, interrupts are only sent to the BSP, unlike
2717 * conventional systems where the IRQ is broadcast to all online CPUs. Not
2718 * having this register set properly prevents kdump from booting up
2719 * properly, so let's make sure that we have it set correctly.
2720 * Note that this is an undocumented register.
2721 */
2722static void nvbridge_check_legacy_irq_routing(struct pci_dev *dev)
2723{
2724 u32 cfg;
2725
2726 if (!pci_find_capability(dev, PCI_CAP_ID_HT))
2727 return;
2728
2729 pci_read_config_dword(dev, 0x74, &cfg);
2730
2731 if (cfg & ((1 << 2) | (1 << 15))) {
2732 pr_info("Rewriting IRQ routing register on MCP55\n");
2733 cfg &= ~((1 << 2) | (1 << 15));
2734 pci_write_config_dword(dev, 0x74, cfg);
2735 }
2736}
2737DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA,
2738 PCI_DEVICE_ID_NVIDIA_MCP55_BRIDGE_V0,
2739 nvbridge_check_legacy_irq_routing);
2740DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA,
2741 PCI_DEVICE_ID_NVIDIA_MCP55_BRIDGE_V4,
2742 nvbridge_check_legacy_irq_routing);
2743
2744static int ht_check_msi_mapping(struct pci_dev *dev)
2745{
2746 int pos, ttl = PCI_FIND_CAP_TTL;
2747 int found = 0;
2748
2749 /* Check if there is HT MSI cap or enabled on this device */
2750 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2751 while (pos && ttl--) {
2752 u8 flags;
2753
2754 if (found < 1)
2755 found = 1;
2756 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2757 &flags) == 0) {
2758 if (flags & HT_MSI_FLAGS_ENABLE) {
2759 if (found < 2) {
2760 found = 2;
2761 break;
2762 }
2763 }
2764 }
2765 pos = pci_find_next_ht_capability(dev, pos,
2766 HT_CAPTYPE_MSI_MAPPING);
2767 }
2768
2769 return found;
2770}
2771
2772static int host_bridge_with_leaf(struct pci_dev *host_bridge)
2773{
2774 struct pci_dev *dev;
2775 int pos;
2776 int i, dev_no;
2777 int found = 0;
2778
2779 dev_no = host_bridge->devfn >> 3;
2780 for (i = dev_no + 1; i < 0x20; i++) {
2781 dev = pci_get_slot(host_bridge->bus, PCI_DEVFN(i, 0));
2782 if (!dev)
2783 continue;
2784
2785 /* found next host bridge? */
2786 pos = pci_find_ht_capability(dev, HT_CAPTYPE_SLAVE);
2787 if (pos != 0) {
2788 pci_dev_put(dev);
2789 break;
2790 }
2791
2792 if (ht_check_msi_mapping(dev)) {
2793 found = 1;
2794 pci_dev_put(dev);
2795 break;
2796 }
2797 pci_dev_put(dev);
2798 }
2799
2800 return found;
2801}
2802
2803#define PCI_HT_CAP_SLAVE_CTRL0 4 /* link control */
2804#define PCI_HT_CAP_SLAVE_CTRL1 8 /* link control to */
2805
2806static int is_end_of_ht_chain(struct pci_dev *dev)
2807{
2808 int pos, ctrl_off;
2809 int end = 0;
2810 u16 flags, ctrl;
2811
2812 pos = pci_find_ht_capability(dev, HT_CAPTYPE_SLAVE);
2813
2814 if (!pos)
2815 goto out;
2816
2817 pci_read_config_word(dev, pos + PCI_CAP_FLAGS, &flags);
2818
2819 ctrl_off = ((flags >> 10) & 1) ?
2820 PCI_HT_CAP_SLAVE_CTRL0 : PCI_HT_CAP_SLAVE_CTRL1;
2821 pci_read_config_word(dev, pos + ctrl_off, &ctrl);
2822
2823 if (ctrl & (1 << 6))
2824 end = 1;
2825
2826out:
2827 return end;
2828}
2829
2830static void nv_ht_enable_msi_mapping(struct pci_dev *dev)
2831{
2832 struct pci_dev *host_bridge;
2833 int pos;
2834 int i, dev_no;
2835 int found = 0;
2836
2837 dev_no = dev->devfn >> 3;
2838 for (i = dev_no; i >= 0; i--) {
2839 host_bridge = pci_get_slot(dev->bus, PCI_DEVFN(i, 0));
2840 if (!host_bridge)
2841 continue;
2842
2843 pos = pci_find_ht_capability(host_bridge, HT_CAPTYPE_SLAVE);
2844 if (pos != 0) {
2845 found = 1;
2846 break;
2847 }
2848 pci_dev_put(host_bridge);
2849 }
2850
2851 if (!found)
2852 return;
2853
2854 /* don't enable end_device/host_bridge with leaf directly here */
2855 if (host_bridge == dev && is_end_of_ht_chain(host_bridge) &&
2856 host_bridge_with_leaf(host_bridge))
2857 goto out;
2858
2859 /* root did that ! */
2860 if (msi_ht_cap_enabled(host_bridge))
2861 goto out;
2862
2863 ht_enable_msi_mapping(dev);
2864
2865out:
2866 pci_dev_put(host_bridge);
2867}
2868
2869static void ht_disable_msi_mapping(struct pci_dev *dev)
2870{
2871 int pos, ttl = PCI_FIND_CAP_TTL;
2872
2873 pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING);
2874 while (pos && ttl--) {
2875 u8 flags;
2876
2877 if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS,
2878 &flags) == 0) {
2879 pci_info(dev, "Disabling HT MSI Mapping\n");
2880
2881 pci_write_config_byte(dev, pos + HT_MSI_FLAGS,
2882 flags & ~HT_MSI_FLAGS_ENABLE);
2883 }
2884 pos = pci_find_next_ht_capability(dev, pos,
2885 HT_CAPTYPE_MSI_MAPPING);
2886 }
2887}
2888
2889static void __nv_msi_ht_cap_quirk(struct pci_dev *dev, int all)
2890{
2891 struct pci_dev *host_bridge;
2892 int pos;
2893 int found;
2894
2895 if (!pci_msi_enabled())
2896 return;
2897
2898 /* check if there is HT MSI cap or enabled on this device */
2899 found = ht_check_msi_mapping(dev);
2900
2901 /* no HT MSI CAP */
2902 if (found == 0)
2903 return;
2904
2905 /*
2906 * HT MSI mapping should be disabled on devices that are below
2907 * a non-Hypertransport host bridge. Locate the host bridge...
2908 */
2909 host_bridge = pci_get_domain_bus_and_slot(pci_domain_nr(dev->bus), 0,
2910 PCI_DEVFN(0, 0));
2911 if (host_bridge == NULL) {
2912 pci_warn(dev, "nv_msi_ht_cap_quirk didn't locate host bridge\n");
2913 return;
2914 }
2915
2916 pos = pci_find_ht_capability(host_bridge, HT_CAPTYPE_SLAVE);
2917 if (pos != 0) {
2918 /* Host bridge is to HT */
2919 if (found == 1) {
2920 /* it is not enabled, try to enable it */
2921 if (all)
2922 ht_enable_msi_mapping(dev);
2923 else
2924 nv_ht_enable_msi_mapping(dev);
2925 }
2926 goto out;
2927 }
2928
2929 /* HT MSI is not enabled */
2930 if (found == 1)
2931 goto out;
2932
2933 /* Host bridge is not to HT, disable HT MSI mapping on this device */
2934 ht_disable_msi_mapping(dev);
2935
2936out:
2937 pci_dev_put(host_bridge);
2938}
2939
2940static void nv_msi_ht_cap_quirk_all(struct pci_dev *dev)
2941{
2942 return __nv_msi_ht_cap_quirk(dev, 1);
2943}
2944DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_ANY_ID, nv_msi_ht_cap_quirk_all);
2945DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AL, PCI_ANY_ID, nv_msi_ht_cap_quirk_all);
2946
2947static void nv_msi_ht_cap_quirk_leaf(struct pci_dev *dev)
2948{
2949 return __nv_msi_ht_cap_quirk(dev, 0);
2950}
2951DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, nv_msi_ht_cap_quirk_leaf);
2952DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, nv_msi_ht_cap_quirk_leaf);
2953
2954static void quirk_msi_intx_disable_bug(struct pci_dev *dev)
2955{
2956 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
2957}
2958
2959static void quirk_msi_intx_disable_ati_bug(struct pci_dev *dev)
2960{
2961 struct pci_dev *p;
2962
2963 /*
2964 * SB700 MSI issue will be fixed at HW level from revision A21;
2965 * we need check PCI REVISION ID of SMBus controller to get SB700
2966 * revision.
2967 */
2968 p = pci_get_device(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_SBX00_SMBUS,
2969 NULL);
2970 if (!p)
2971 return;
2972
2973 if ((p->revision < 0x3B) && (p->revision >= 0x30))
2974 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
2975 pci_dev_put(p);
2976}
2977
2978static void quirk_msi_intx_disable_qca_bug(struct pci_dev *dev)
2979{
2980 /* AR816X/AR817X/E210X MSI is fixed at HW level from revision 0x18 */
2981 if (dev->revision < 0x18) {
2982 pci_info(dev, "set MSI_INTX_DISABLE_BUG flag\n");
2983 dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG;
2984 }
2985}
2986DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2987 PCI_DEVICE_ID_TIGON3_5780,
2988 quirk_msi_intx_disable_bug);
2989DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2990 PCI_DEVICE_ID_TIGON3_5780S,
2991 quirk_msi_intx_disable_bug);
2992DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2993 PCI_DEVICE_ID_TIGON3_5714,
2994 quirk_msi_intx_disable_bug);
2995DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2996 PCI_DEVICE_ID_TIGON3_5714S,
2997 quirk_msi_intx_disable_bug);
2998DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
2999 PCI_DEVICE_ID_TIGON3_5715,
3000 quirk_msi_intx_disable_bug);
3001DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
3002 PCI_DEVICE_ID_TIGON3_5715S,
3003 quirk_msi_intx_disable_bug);
3004
3005DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4390,
3006 quirk_msi_intx_disable_ati_bug);
3007DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4391,
3008 quirk_msi_intx_disable_ati_bug);
3009DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4392,
3010 quirk_msi_intx_disable_ati_bug);
3011DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4393,
3012 quirk_msi_intx_disable_ati_bug);
3013DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4394,
3014 quirk_msi_intx_disable_ati_bug);
3015
3016DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4373,
3017 quirk_msi_intx_disable_bug);
3018DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4374,
3019 quirk_msi_intx_disable_bug);
3020DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4375,
3021 quirk_msi_intx_disable_bug);
3022
3023DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1062,
3024 quirk_msi_intx_disable_bug);
3025DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1063,
3026 quirk_msi_intx_disable_bug);
3027DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x2060,
3028 quirk_msi_intx_disable_bug);
3029DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x2062,
3030 quirk_msi_intx_disable_bug);
3031DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1073,
3032 quirk_msi_intx_disable_bug);
3033DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1083,
3034 quirk_msi_intx_disable_bug);
3035DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1090,
3036 quirk_msi_intx_disable_qca_bug);
3037DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1091,
3038 quirk_msi_intx_disable_qca_bug);
3039DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x10a0,
3040 quirk_msi_intx_disable_qca_bug);
3041DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x10a1,
3042 quirk_msi_intx_disable_qca_bug);
3043DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0xe091,
3044 quirk_msi_intx_disable_qca_bug);
3045
3046/*
3047 * Amazon's Annapurna Labs 1c36:0031 Root Ports don't support MSI-X, so it
3048 * should be disabled on platforms where the device (mistakenly) advertises it.
3049 *
3050 * Notice that this quirk also disables MSI (which may work, but hasn't been
3051 * tested), since currently there is no standard way to disable only MSI-X.
3052 *
3053 * The 0031 device id is reused for other non Root Port device types,
3054 * therefore the quirk is registered for the PCI_CLASS_BRIDGE_PCI class.
3055 */
3056static void quirk_al_msi_disable(struct pci_dev *dev)
3057{
3058 dev->no_msi = 1;
3059 pci_warn(dev, "Disabling MSI/MSI-X\n");
3060}
3061DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_AMAZON_ANNAPURNA_LABS, 0x0031,
3062 PCI_CLASS_BRIDGE_PCI, 8, quirk_al_msi_disable);
3063#endif /* CONFIG_PCI_MSI */
3064
3065/*
3066 * Allow manual resource allocation for PCI hotplug bridges via
3067 * pci=hpmemsize=nnM and pci=hpiosize=nnM parameters. For some PCI-PCI
3068 * hotplug bridges, like PLX 6254 (former HINT HB6), kernel fails to
3069 * allocate resources when hotplug device is inserted and PCI bus is
3070 * rescanned.
3071 */
3072static void quirk_hotplug_bridge(struct pci_dev *dev)
3073{
3074 dev->is_hotplug_bridge = 1;
3075}
3076DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_HINT, 0x0020, quirk_hotplug_bridge);
3077
3078/*
3079 * This is a quirk for the Ricoh MMC controller found as a part of some
3080 * multifunction chips.
3081 *
3082 * This is very similar and based on the ricoh_mmc driver written by
3083 * Philip Langdale. Thank you for these magic sequences.
3084 *
3085 * These chips implement the four main memory card controllers (SD, MMC,
3086 * MS, xD) and one or both of CardBus or FireWire.
3087 *
3088 * It happens that they implement SD and MMC support as separate
3089 * controllers (and PCI functions). The Linux SDHCI driver supports MMC
3090 * cards but the chip detects MMC cards in hardware and directs them to the
3091 * MMC controller - so the SDHCI driver never sees them.
3092 *
3093 * To get around this, we must disable the useless MMC controller. At that
3094 * point, the SDHCI controller will start seeing them. It seems to be the
3095 * case that the relevant PCI registers to deactivate the MMC controller
3096 * live on PCI function 0, which might be the CardBus controller or the
3097 * FireWire controller, depending on the particular chip in question
3098 *
3099 * This has to be done early, because as soon as we disable the MMC controller
3100 * other PCI functions shift up one level, e.g. function #2 becomes function
3101 * #1, and this will confuse the PCI core.
3102 */
3103#ifdef CONFIG_MMC_RICOH_MMC
3104static void ricoh_mmc_fixup_rl5c476(struct pci_dev *dev)
3105{
3106 u8 write_enable;
3107 u8 write_target;
3108 u8 disable;
3109
3110 /*
3111 * Disable via CardBus interface
3112 *
3113 * This must be done via function #0
3114 */
3115 if (PCI_FUNC(dev->devfn))
3116 return;
3117
3118 pci_read_config_byte(dev, 0xB7, &disable);
3119 if (disable & 0x02)
3120 return;
3121
3122 pci_read_config_byte(dev, 0x8E, &write_enable);
3123 pci_write_config_byte(dev, 0x8E, 0xAA);
3124 pci_read_config_byte(dev, 0x8D, &write_target);
3125 pci_write_config_byte(dev, 0x8D, 0xB7);
3126 pci_write_config_byte(dev, 0xB7, disable | 0x02);
3127 pci_write_config_byte(dev, 0x8E, write_enable);
3128 pci_write_config_byte(dev, 0x8D, write_target);
3129
3130 pci_notice(dev, "proprietary Ricoh MMC controller disabled (via CardBus function)\n");
3131 pci_notice(dev, "MMC cards are now supported by standard SDHCI controller\n");
3132}
3133DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, ricoh_mmc_fixup_rl5c476);
3134DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, ricoh_mmc_fixup_rl5c476);
3135
3136static void ricoh_mmc_fixup_r5c832(struct pci_dev *dev)
3137{
3138 u8 write_enable;
3139 u8 disable;
3140
3141 /*
3142 * Disable via FireWire interface
3143 *
3144 * This must be done via function #0
3145 */
3146 if (PCI_FUNC(dev->devfn))
3147 return;
3148 /*
3149 * RICOH 0xe822 and 0xe823 SD/MMC card readers fail to recognize
3150 * certain types of SD/MMC cards. Lowering the SD base clock
3151 * frequency from 200Mhz to 50Mhz fixes this issue.
3152 *
3153 * 0x150 - SD2.0 mode enable for changing base clock
3154 * frequency to 50Mhz
3155 * 0xe1 - Base clock frequency
3156 * 0x32 - 50Mhz new clock frequency
3157 * 0xf9 - Key register for 0x150
3158 * 0xfc - key register for 0xe1
3159 */
3160 if (dev->device == PCI_DEVICE_ID_RICOH_R5CE822 ||
3161 dev->device == PCI_DEVICE_ID_RICOH_R5CE823) {
3162 pci_write_config_byte(dev, 0xf9, 0xfc);
3163 pci_write_config_byte(dev, 0x150, 0x10);
3164 pci_write_config_byte(dev, 0xf9, 0x00);
3165 pci_write_config_byte(dev, 0xfc, 0x01);
3166 pci_write_config_byte(dev, 0xe1, 0x32);
3167 pci_write_config_byte(dev, 0xfc, 0x00);
3168
3169 pci_notice(dev, "MMC controller base frequency changed to 50Mhz.\n");
3170 }
3171
3172 pci_read_config_byte(dev, 0xCB, &disable);
3173
3174 if (disable & 0x02)
3175 return;
3176
3177 pci_read_config_byte(dev, 0xCA, &write_enable);
3178 pci_write_config_byte(dev, 0xCA, 0x57);
3179 pci_write_config_byte(dev, 0xCB, disable | 0x02);
3180 pci_write_config_byte(dev, 0xCA, write_enable);
3181
3182 pci_notice(dev, "proprietary Ricoh MMC controller disabled (via FireWire function)\n");
3183 pci_notice(dev, "MMC cards are now supported by standard SDHCI controller\n");
3184
3185}
3186DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5C832, ricoh_mmc_fixup_r5c832);
3187DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5C832, ricoh_mmc_fixup_r5c832);
3188DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE822, ricoh_mmc_fixup_r5c832);
3189DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE822, ricoh_mmc_fixup_r5c832);
3190DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE823, ricoh_mmc_fixup_r5c832);
3191DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE823, ricoh_mmc_fixup_r5c832);
3192#endif /*CONFIG_MMC_RICOH_MMC*/
3193
3194#ifdef CONFIG_DMAR_TABLE
3195#define VTUNCERRMSK_REG 0x1ac
3196#define VTD_MSK_SPEC_ERRORS (1 << 31)
3197/*
3198 * This is a quirk for masking VT-d spec-defined errors to platform error
3199 * handling logic. Without this, platforms using Intel 7500, 5500 chipsets
3200 * (and the derivative chipsets like X58 etc) seem to generate NMI/SMI (based
3201 * on the RAS config settings of the platform) when a VT-d fault happens.
3202 * The resulting SMI caused the system to hang.
3203 *
3204 * VT-d spec-related errors are already handled by the VT-d OS code, so no
3205 * need to report the same error through other channels.
3206 */
3207static void vtd_mask_spec_errors(struct pci_dev *dev)
3208{
3209 u32 word;
3210
3211 pci_read_config_dword(dev, VTUNCERRMSK_REG, &word);
3212 pci_write_config_dword(dev, VTUNCERRMSK_REG, word | VTD_MSK_SPEC_ERRORS);
3213}
3214DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x342e, vtd_mask_spec_errors);
3215DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x3c28, vtd_mask_spec_errors);
3216#endif
3217
3218static void fixup_ti816x_class(struct pci_dev *dev)
3219{
3220 u32 class = dev->class;
3221
3222 /* TI 816x devices do not have class code set when in PCIe boot mode */
3223 dev->class = PCI_CLASS_MULTIMEDIA_VIDEO << 8;
3224 pci_info(dev, "PCI class overridden (%#08x -> %#08x)\n",
3225 class, dev->class);
3226}
3227DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_TI, 0xb800,
3228 PCI_CLASS_NOT_DEFINED, 8, fixup_ti816x_class);
3229
3230/*
3231 * Some PCIe devices do not work reliably with the claimed maximum
3232 * payload size supported.
3233 */
3234static void fixup_mpss_256(struct pci_dev *dev)
3235{
3236 dev->pcie_mpss = 1; /* 256 bytes */
3237}
3238DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SOLARFLARE,
3239 PCI_DEVICE_ID_SOLARFLARE_SFC4000A_0, fixup_mpss_256);
3240DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SOLARFLARE,
3241 PCI_DEVICE_ID_SOLARFLARE_SFC4000A_1, fixup_mpss_256);
3242DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SOLARFLARE,
3243 PCI_DEVICE_ID_SOLARFLARE_SFC4000B, fixup_mpss_256);
3244DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_ASMEDIA, 0x0612, fixup_mpss_256);
3245
3246/*
3247 * Intel 5000 and 5100 Memory controllers have an erratum with read completion
3248 * coalescing (which is enabled by default on some BIOSes) and MPS of 256B.
3249 * Since there is no way of knowing what the PCIe MPS on each fabric will be
3250 * until all of the devices are discovered and buses walked, read completion
3251 * coalescing must be disabled. Unfortunately, it cannot be re-enabled because
3252 * it is possible to hotplug a device with MPS of 256B.
3253 */
3254static void quirk_intel_mc_errata(struct pci_dev *dev)
3255{
3256 int err;
3257 u16 rcc;
3258
3259 if (pcie_bus_config == PCIE_BUS_TUNE_OFF ||
3260 pcie_bus_config == PCIE_BUS_DEFAULT)
3261 return;
3262
3263 /*
3264 * Intel erratum specifies bits to change but does not say what
3265 * they are. Keeping them magical until such time as the registers
3266 * and values can be explained.
3267 */
3268 err = pci_read_config_word(dev, 0x48, &rcc);
3269 if (err) {
3270 pci_err(dev, "Error attempting to read the read completion coalescing register\n");
3271 return;
3272 }
3273
3274 if (!(rcc & (1 << 10)))
3275 return;
3276
3277 rcc &= ~(1 << 10);
3278
3279 err = pci_write_config_word(dev, 0x48, rcc);
3280 if (err) {
3281 pci_err(dev, "Error attempting to write the read completion coalescing register\n");
3282 return;
3283 }
3284
3285 pr_info_once("Read completion coalescing disabled due to hardware erratum relating to 256B MPS\n");
3286}
3287/* Intel 5000 series memory controllers and ports 2-7 */
3288DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25c0, quirk_intel_mc_errata);
3289DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25d0, quirk_intel_mc_errata);
3290DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25d4, quirk_intel_mc_errata);
3291DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25d8, quirk_intel_mc_errata);
3292DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e2, quirk_intel_mc_errata);
3293DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e3, quirk_intel_mc_errata);
3294DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e4, quirk_intel_mc_errata);
3295DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e5, quirk_intel_mc_errata);
3296DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e6, quirk_intel_mc_errata);
3297DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e7, quirk_intel_mc_errata);
3298DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25f7, quirk_intel_mc_errata);
3299DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25f8, quirk_intel_mc_errata);
3300DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25f9, quirk_intel_mc_errata);
3301DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25fa, quirk_intel_mc_errata);
3302/* Intel 5100 series memory controllers and ports 2-7 */
3303DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65c0, quirk_intel_mc_errata);
3304DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e2, quirk_intel_mc_errata);
3305DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e3, quirk_intel_mc_errata);
3306DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e4, quirk_intel_mc_errata);
3307DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e5, quirk_intel_mc_errata);
3308DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e6, quirk_intel_mc_errata);
3309DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e7, quirk_intel_mc_errata);
3310DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65f7, quirk_intel_mc_errata);
3311DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65f8, quirk_intel_mc_errata);
3312DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65f9, quirk_intel_mc_errata);
3313DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65fa, quirk_intel_mc_errata);
3314
3315/*
3316 * Ivytown NTB BAR sizes are misreported by the hardware due to an erratum.
3317 * To work around this, query the size it should be configured to by the
3318 * device and modify the resource end to correspond to this new size.
3319 */
3320static void quirk_intel_ntb(struct pci_dev *dev)
3321{
3322 int rc;
3323 u8 val;
3324
3325 rc = pci_read_config_byte(dev, 0x00D0, &val);
3326 if (rc)
3327 return;
3328
3329 dev->resource[2].end = dev->resource[2].start + ((u64) 1 << val) - 1;
3330
3331 rc = pci_read_config_byte(dev, 0x00D1, &val);
3332 if (rc)
3333 return;
3334
3335 dev->resource[4].end = dev->resource[4].start + ((u64) 1 << val) - 1;
3336}
3337DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x0e08, quirk_intel_ntb);
3338DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x0e0d, quirk_intel_ntb);
3339
3340/*
3341 * Some BIOS implementations leave the Intel GPU interrupts enabled, even
3342 * though no one is handling them (e.g., if the i915 driver is never
3343 * loaded). Additionally the interrupt destination is not set up properly
3344 * and the interrupt ends up -somewhere-.
3345 *
3346 * These spurious interrupts are "sticky" and the kernel disables the
3347 * (shared) interrupt line after 100,000+ generated interrupts.
3348 *
3349 * Fix it by disabling the still enabled interrupts. This resolves crashes
3350 * often seen on monitor unplug.
3351 */
3352#define I915_DEIER_REG 0x4400c
3353static void disable_igfx_irq(struct pci_dev *dev)
3354{
3355 void __iomem *regs = pci_iomap(dev, 0, 0);
3356 if (regs == NULL) {
3357 pci_warn(dev, "igfx quirk: Can't iomap PCI device\n");
3358 return;
3359 }
3360
3361 /* Check if any interrupt line is still enabled */
3362 if (readl(regs + I915_DEIER_REG) != 0) {
3363 pci_warn(dev, "BIOS left Intel GPU interrupts enabled; disabling\n");
3364
3365 writel(0, regs + I915_DEIER_REG);
3366 }
3367
3368 pci_iounmap(dev, regs);
3369}
3370DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0042, disable_igfx_irq);
3371DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0046, disable_igfx_irq);
3372DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x004a, disable_igfx_irq);
3373DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0102, disable_igfx_irq);
3374DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0106, disable_igfx_irq);
3375DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x010a, disable_igfx_irq);
3376DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0152, disable_igfx_irq);
3377
3378/*
3379 * PCI devices which are on Intel chips can skip the 10ms delay
3380 * before entering D3 mode.
3381 */
3382static void quirk_remove_d3hot_delay(struct pci_dev *dev)
3383{
3384 dev->d3hot_delay = 0;
3385}
3386/* C600 Series devices do not need 10ms d3hot_delay */
3387DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0412, quirk_remove_d3hot_delay);
3388DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0c00, quirk_remove_d3hot_delay);
3389DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0c0c, quirk_remove_d3hot_delay);
3390/* Lynxpoint-H PCH devices do not need 10ms d3hot_delay */
3391DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c02, quirk_remove_d3hot_delay);
3392DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c18, quirk_remove_d3hot_delay);
3393DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c1c, quirk_remove_d3hot_delay);
3394DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c20, quirk_remove_d3hot_delay);
3395DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c22, quirk_remove_d3hot_delay);
3396DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c26, quirk_remove_d3hot_delay);
3397DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c2d, quirk_remove_d3hot_delay);
3398DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c31, quirk_remove_d3hot_delay);
3399DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c3a, quirk_remove_d3hot_delay);
3400DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c3d, quirk_remove_d3hot_delay);
3401DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c4e, quirk_remove_d3hot_delay);
3402/* Intel Cherrytrail devices do not need 10ms d3hot_delay */
3403DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2280, quirk_remove_d3hot_delay);
3404DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2298, quirk_remove_d3hot_delay);
3405DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x229c, quirk_remove_d3hot_delay);
3406DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b0, quirk_remove_d3hot_delay);
3407DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b5, quirk_remove_d3hot_delay);
3408DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b7, quirk_remove_d3hot_delay);
3409DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b8, quirk_remove_d3hot_delay);
3410DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22d8, quirk_remove_d3hot_delay);
3411DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22dc, quirk_remove_d3hot_delay);
3412
3413/*
3414 * Some devices may pass our check in pci_intx_mask_supported() if
3415 * PCI_COMMAND_INTX_DISABLE works though they actually do not properly
3416 * support this feature.
3417 */
3418static void quirk_broken_intx_masking(struct pci_dev *dev)
3419{
3420 dev->broken_intx_masking = 1;
3421}
3422DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x0030,
3423 quirk_broken_intx_masking);
3424DECLARE_PCI_FIXUP_FINAL(0x1814, 0x0601, /* Ralink RT2800 802.11n PCI */
3425 quirk_broken_intx_masking);
3426DECLARE_PCI_FIXUP_FINAL(0x1b7c, 0x0004, /* Ceton InfiniTV4 */
3427 quirk_broken_intx_masking);
3428
3429/*
3430 * Realtek RTL8169 PCI Gigabit Ethernet Controller (rev 10)
3431 * Subsystem: Realtek RTL8169/8110 Family PCI Gigabit Ethernet NIC
3432 *
3433 * RTL8110SC - Fails under PCI device assignment using DisINTx masking.
3434 */
3435DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_REALTEK, 0x8169,
3436 quirk_broken_intx_masking);
3437
3438/*
3439 * Intel i40e (XL710/X710) 10/20/40GbE NICs all have broken INTx masking,
3440 * DisINTx can be set but the interrupt status bit is non-functional.
3441 */
3442DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1572, quirk_broken_intx_masking);
3443DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1574, quirk_broken_intx_masking);
3444DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1580, quirk_broken_intx_masking);
3445DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1581, quirk_broken_intx_masking);
3446DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1583, quirk_broken_intx_masking);
3447DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1584, quirk_broken_intx_masking);
3448DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1585, quirk_broken_intx_masking);
3449DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1586, quirk_broken_intx_masking);
3450DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1587, quirk_broken_intx_masking);
3451DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1588, quirk_broken_intx_masking);
3452DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1589, quirk_broken_intx_masking);
3453DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x158a, quirk_broken_intx_masking);
3454DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x158b, quirk_broken_intx_masking);
3455DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x37d0, quirk_broken_intx_masking);
3456DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x37d1, quirk_broken_intx_masking);
3457DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x37d2, quirk_broken_intx_masking);
3458
3459static u16 mellanox_broken_intx_devs[] = {
3460 PCI_DEVICE_ID_MELLANOX_HERMON_SDR,
3461 PCI_DEVICE_ID_MELLANOX_HERMON_DDR,
3462 PCI_DEVICE_ID_MELLANOX_HERMON_QDR,
3463 PCI_DEVICE_ID_MELLANOX_HERMON_DDR_GEN2,
3464 PCI_DEVICE_ID_MELLANOX_HERMON_QDR_GEN2,
3465 PCI_DEVICE_ID_MELLANOX_HERMON_EN,
3466 PCI_DEVICE_ID_MELLANOX_HERMON_EN_GEN2,
3467 PCI_DEVICE_ID_MELLANOX_CONNECTX_EN,
3468 PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_T_GEN2,
3469 PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_GEN2,
3470 PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_5_GEN2,
3471 PCI_DEVICE_ID_MELLANOX_CONNECTX2,
3472 PCI_DEVICE_ID_MELLANOX_CONNECTX3,
3473 PCI_DEVICE_ID_MELLANOX_CONNECTX3_PRO,
3474};
3475
3476#define CONNECTX_4_CURR_MAX_MINOR 99
3477#define CONNECTX_4_INTX_SUPPORT_MINOR 14
3478
3479/*
3480 * Check ConnectX-4/LX FW version to see if it supports legacy interrupts.
3481 * If so, don't mark it as broken.
3482 * FW minor > 99 means older FW version format and no INTx masking support.
3483 * FW minor < 14 means new FW version format and no INTx masking support.
3484 */
3485static void mellanox_check_broken_intx_masking(struct pci_dev *pdev)
3486{
3487 __be32 __iomem *fw_ver;
3488 u16 fw_major;
3489 u16 fw_minor;
3490 u16 fw_subminor;
3491 u32 fw_maj_min;
3492 u32 fw_sub_min;
3493 int i;
3494
3495 for (i = 0; i < ARRAY_SIZE(mellanox_broken_intx_devs); i++) {
3496 if (pdev->device == mellanox_broken_intx_devs[i]) {
3497 pdev->broken_intx_masking = 1;
3498 return;
3499 }
3500 }
3501
3502 /*
3503 * Getting here means Connect-IB cards and up. Connect-IB has no INTx
3504 * support so shouldn't be checked further
3505 */
3506 if (pdev->device == PCI_DEVICE_ID_MELLANOX_CONNECTIB)
3507 return;
3508
3509 if (pdev->device != PCI_DEVICE_ID_MELLANOX_CONNECTX4 &&
3510 pdev->device != PCI_DEVICE_ID_MELLANOX_CONNECTX4_LX)
3511 return;
3512
3513 /* For ConnectX-4 and ConnectX-4LX, need to check FW support */
3514 if (pci_enable_device_mem(pdev)) {
3515 pci_warn(pdev, "Can't enable device memory\n");
3516 return;
3517 }
3518
3519 fw_ver = ioremap(pci_resource_start(pdev, 0), 4);
3520 if (!fw_ver) {
3521 pci_warn(pdev, "Can't map ConnectX-4 initialization segment\n");
3522 goto out;
3523 }
3524
3525 /* Reading from resource space should be 32b aligned */
3526 fw_maj_min = ioread32be(fw_ver);
3527 fw_sub_min = ioread32be(fw_ver + 1);
3528 fw_major = fw_maj_min & 0xffff;
3529 fw_minor = fw_maj_min >> 16;
3530 fw_subminor = fw_sub_min & 0xffff;
3531 if (fw_minor > CONNECTX_4_CURR_MAX_MINOR ||
3532 fw_minor < CONNECTX_4_INTX_SUPPORT_MINOR) {
3533 pci_warn(pdev, "ConnectX-4: FW %u.%u.%u doesn't support INTx masking, disabling. Please upgrade FW to %d.14.1100 and up for INTx support\n",
3534 fw_major, fw_minor, fw_subminor, pdev->device ==
3535 PCI_DEVICE_ID_MELLANOX_CONNECTX4 ? 12 : 14);
3536 pdev->broken_intx_masking = 1;
3537 }
3538
3539 iounmap(fw_ver);
3540
3541out:
3542 pci_disable_device(pdev);
3543}
3544DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX, PCI_ANY_ID,
3545 mellanox_check_broken_intx_masking);
3546
3547static void quirk_no_bus_reset(struct pci_dev *dev)
3548{
3549 dev->dev_flags |= PCI_DEV_FLAGS_NO_BUS_RESET;
3550}
3551
3552/*
3553 * Some NVIDIA GPU devices do not work with bus reset, SBR needs to be
3554 * prevented for those affected devices.
3555 */
3556static void quirk_nvidia_no_bus_reset(struct pci_dev *dev)
3557{
3558 if ((dev->device & 0xffc0) == 0x2340)
3559 quirk_no_bus_reset(dev);
3560}
3561DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
3562 quirk_nvidia_no_bus_reset);
3563
3564/*
3565 * Some Atheros AR9xxx and QCA988x chips do not behave after a bus reset.
3566 * The device will throw a Link Down error on AER-capable systems and
3567 * regardless of AER, config space of the device is never accessible again
3568 * and typically causes the system to hang or reset when access is attempted.
3569 * https://lore.kernel.org/r/20140923210318.498dacbd@dualc.maya.org/
3570 */
3571DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0030, quirk_no_bus_reset);
3572DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0032, quirk_no_bus_reset);
3573DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x003c, quirk_no_bus_reset);
3574DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0033, quirk_no_bus_reset);
3575DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0034, quirk_no_bus_reset);
3576
3577/*
3578 * Root port on some Cavium CN8xxx chips do not successfully complete a bus
3579 * reset when used with certain child devices. After the reset, config
3580 * accesses to the child may fail.
3581 */
3582DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_CAVIUM, 0xa100, quirk_no_bus_reset);
3583
3584/*
3585 * Some TI KeyStone C667X devices do not support bus/hot reset. The PCIESS
3586 * automatically disables LTSSM when Secondary Bus Reset is received and
3587 * the device stops working. Prevent bus reset for these devices. With
3588 * this change, the device can be assigned to VMs with VFIO, but it will
3589 * leak state between VMs. Reference
3590 * https://e2e.ti.com/support/processors/f/791/t/954382
3591 */
3592DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TI, 0xb005, quirk_no_bus_reset);
3593
3594static void quirk_no_pm_reset(struct pci_dev *dev)
3595{
3596 /*
3597 * We can't do a bus reset on root bus devices, but an ineffective
3598 * PM reset may be better than nothing.
3599 */
3600 if (!pci_is_root_bus(dev->bus))
3601 dev->dev_flags |= PCI_DEV_FLAGS_NO_PM_RESET;
3602}
3603
3604/*
3605 * Some AMD/ATI GPUS (HD8570 - Oland) report that a D3hot->D0 transition
3606 * causes a reset (i.e., they advertise NoSoftRst-). This transition seems
3607 * to have no effect on the device: it retains the framebuffer contents and
3608 * monitor sync. Advertising this support makes other layers, like VFIO,
3609 * assume pci_reset_function() is viable for this device. Mark it as
3610 * unavailable to skip it when testing reset methods.
3611 */
3612DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_ATI, PCI_ANY_ID,
3613 PCI_CLASS_DISPLAY_VGA, 8, quirk_no_pm_reset);
3614
3615/*
3616 * Thunderbolt controllers with broken MSI hotplug signaling:
3617 * Entire 1st generation (Light Ridge, Eagle Ridge, Light Peak) and part
3618 * of the 2nd generation (Cactus Ridge 4C up to revision 1, Port Ridge).
3619 */
3620static void quirk_thunderbolt_hotplug_msi(struct pci_dev *pdev)
3621{
3622 if (pdev->is_hotplug_bridge &&
3623 (pdev->device != PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C ||
3624 pdev->revision <= 1))
3625 pdev->no_msi = 1;
3626}
3627DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_LIGHT_RIDGE,
3628 quirk_thunderbolt_hotplug_msi);
3629DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_EAGLE_RIDGE,
3630 quirk_thunderbolt_hotplug_msi);
3631DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_LIGHT_PEAK,
3632 quirk_thunderbolt_hotplug_msi);
3633DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C,
3634 quirk_thunderbolt_hotplug_msi);
3635DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PORT_RIDGE,
3636 quirk_thunderbolt_hotplug_msi);
3637
3638#ifdef CONFIG_ACPI
3639/*
3640 * Apple: Shutdown Cactus Ridge Thunderbolt controller.
3641 *
3642 * On Apple hardware the Cactus Ridge Thunderbolt controller needs to be
3643 * shutdown before suspend. Otherwise the native host interface (NHI) will not
3644 * be present after resume if a device was plugged in before suspend.
3645 *
3646 * The Thunderbolt controller consists of a PCIe switch with downstream
3647 * bridges leading to the NHI and to the tunnel PCI bridges.
3648 *
3649 * This quirk cuts power to the whole chip. Therefore we have to apply it
3650 * during suspend_noirq of the upstream bridge.
3651 *
3652 * Power is automagically restored before resume. No action is needed.
3653 */
3654static void quirk_apple_poweroff_thunderbolt(struct pci_dev *dev)
3655{
3656 acpi_handle bridge, SXIO, SXFP, SXLV;
3657
3658 if (!x86_apple_machine)
3659 return;
3660 if (pci_pcie_type(dev) != PCI_EXP_TYPE_UPSTREAM)
3661 return;
3662
3663 /*
3664 * SXIO/SXFP/SXLF turns off power to the Thunderbolt controller.
3665 * We don't know how to turn it back on again, but firmware does,
3666 * so we can only use SXIO/SXFP/SXLF if we're suspending via
3667 * firmware.
3668 */
3669 if (!pm_suspend_via_firmware())
3670 return;
3671
3672 bridge = ACPI_HANDLE(&dev->dev);
3673 if (!bridge)
3674 return;
3675
3676 /*
3677 * SXIO and SXLV are present only on machines requiring this quirk.
3678 * Thunderbolt bridges in external devices might have the same
3679 * device ID as those on the host, but they will not have the
3680 * associated ACPI methods. This implicitly checks that we are at
3681 * the right bridge.
3682 */
3683 if (ACPI_FAILURE(acpi_get_handle(bridge, "DSB0.NHI0.SXIO", &SXIO))
3684 || ACPI_FAILURE(acpi_get_handle(bridge, "DSB0.NHI0.SXFP", &SXFP))
3685 || ACPI_FAILURE(acpi_get_handle(bridge, "DSB0.NHI0.SXLV", &SXLV)))
3686 return;
3687 pci_info(dev, "quirk: cutting power to Thunderbolt controller...\n");
3688
3689 /* magic sequence */
3690 acpi_execute_simple_method(SXIO, NULL, 1);
3691 acpi_execute_simple_method(SXFP, NULL, 0);
3692 msleep(300);
3693 acpi_execute_simple_method(SXLV, NULL, 0);
3694 acpi_execute_simple_method(SXIO, NULL, 0);
3695 acpi_execute_simple_method(SXLV, NULL, 0);
3696}
3697DECLARE_PCI_FIXUP_SUSPEND_LATE(PCI_VENDOR_ID_INTEL,
3698 PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C,
3699 quirk_apple_poweroff_thunderbolt);
3700#endif
3701
3702/*
3703 * Following are device-specific reset methods which can be used to
3704 * reset a single function if other methods (e.g. FLR, PM D0->D3) are
3705 * not available.
3706 */
3707static int reset_intel_82599_sfp_virtfn(struct pci_dev *dev, int probe)
3708{
3709 /*
3710 * http://www.intel.com/content/dam/doc/datasheet/82599-10-gbe-controller-datasheet.pdf
3711 *
3712 * The 82599 supports FLR on VFs, but FLR support is reported only
3713 * in the PF DEVCAP (sec 9.3.10.4), not in the VF DEVCAP (sec 9.5).
3714 * Thus we must call pcie_flr() directly without first checking if it is
3715 * supported.
3716 */
3717 if (!probe)
3718 pcie_flr(dev);
3719 return 0;
3720}
3721
3722#define SOUTH_CHICKEN2 0xc2004
3723#define PCH_PP_STATUS 0xc7200
3724#define PCH_PP_CONTROL 0xc7204
3725#define MSG_CTL 0x45010
3726#define NSDE_PWR_STATE 0xd0100
3727#define IGD_OPERATION_TIMEOUT 10000 /* set timeout 10 seconds */
3728
3729static int reset_ivb_igd(struct pci_dev *dev, int probe)
3730{
3731 void __iomem *mmio_base;
3732 unsigned long timeout;
3733 u32 val;
3734
3735 if (probe)
3736 return 0;
3737
3738 mmio_base = pci_iomap(dev, 0, 0);
3739 if (!mmio_base)
3740 return -ENOMEM;
3741
3742 iowrite32(0x00000002, mmio_base + MSG_CTL);
3743
3744 /*
3745 * Clobbering SOUTH_CHICKEN2 register is fine only if the next
3746 * driver loaded sets the right bits. However, this's a reset and
3747 * the bits have been set by i915 previously, so we clobber
3748 * SOUTH_CHICKEN2 register directly here.
3749 */
3750 iowrite32(0x00000005, mmio_base + SOUTH_CHICKEN2);
3751
3752 val = ioread32(mmio_base + PCH_PP_CONTROL) & 0xfffffffe;
3753 iowrite32(val, mmio_base + PCH_PP_CONTROL);
3754
3755 timeout = jiffies + msecs_to_jiffies(IGD_OPERATION_TIMEOUT);
3756 do {
3757 val = ioread32(mmio_base + PCH_PP_STATUS);
3758 if ((val & 0xb0000000) == 0)
3759 goto reset_complete;
3760 msleep(10);
3761 } while (time_before(jiffies, timeout));
3762 pci_warn(dev, "timeout during reset\n");
3763
3764reset_complete:
3765 iowrite32(0x00000002, mmio_base + NSDE_PWR_STATE);
3766
3767 pci_iounmap(dev, mmio_base);
3768 return 0;
3769}
3770
3771/* Device-specific reset method for Chelsio T4-based adapters */
3772static int reset_chelsio_generic_dev(struct pci_dev *dev, int probe)
3773{
3774 u16 old_command;
3775 u16 msix_flags;
3776
3777 /*
3778 * If this isn't a Chelsio T4-based device, return -ENOTTY indicating
3779 * that we have no device-specific reset method.
3780 */
3781 if ((dev->device & 0xf000) != 0x4000)
3782 return -ENOTTY;
3783
3784 /*
3785 * If this is the "probe" phase, return 0 indicating that we can
3786 * reset this device.
3787 */
3788 if (probe)
3789 return 0;
3790
3791 /*
3792 * T4 can wedge if there are DMAs in flight within the chip and Bus
3793 * Master has been disabled. We need to have it on till the Function
3794 * Level Reset completes. (BUS_MASTER is disabled in
3795 * pci_reset_function()).
3796 */
3797 pci_read_config_word(dev, PCI_COMMAND, &old_command);
3798 pci_write_config_word(dev, PCI_COMMAND,
3799 old_command | PCI_COMMAND_MASTER);
3800
3801 /*
3802 * Perform the actual device function reset, saving and restoring
3803 * configuration information around the reset.
3804 */
3805 pci_save_state(dev);
3806
3807 /*
3808 * T4 also suffers a Head-Of-Line blocking problem if MSI-X interrupts
3809 * are disabled when an MSI-X interrupt message needs to be delivered.
3810 * So we briefly re-enable MSI-X interrupts for the duration of the
3811 * FLR. The pci_restore_state() below will restore the original
3812 * MSI-X state.
3813 */
3814 pci_read_config_word(dev, dev->msix_cap+PCI_MSIX_FLAGS, &msix_flags);
3815 if ((msix_flags & PCI_MSIX_FLAGS_ENABLE) == 0)
3816 pci_write_config_word(dev, dev->msix_cap+PCI_MSIX_FLAGS,
3817 msix_flags |
3818 PCI_MSIX_FLAGS_ENABLE |
3819 PCI_MSIX_FLAGS_MASKALL);
3820
3821 pcie_flr(dev);
3822
3823 /*
3824 * Restore the configuration information (BAR values, etc.) including
3825 * the original PCI Configuration Space Command word, and return
3826 * success.
3827 */
3828 pci_restore_state(dev);
3829 pci_write_config_word(dev, PCI_COMMAND, old_command);
3830 return 0;
3831}
3832
3833#define PCI_DEVICE_ID_INTEL_82599_SFP_VF 0x10ed
3834#define PCI_DEVICE_ID_INTEL_IVB_M_VGA 0x0156
3835#define PCI_DEVICE_ID_INTEL_IVB_M2_VGA 0x0166
3836
3837/*
3838 * The Samsung SM961/PM961 controller can sometimes enter a fatal state after
3839 * FLR where config space reads from the device return -1. We seem to be
3840 * able to avoid this condition if we disable the NVMe controller prior to
3841 * FLR. This quirk is generic for any NVMe class device requiring similar
3842 * assistance to quiesce the device prior to FLR.
3843 *
3844 * NVMe specification: https://nvmexpress.org/resources/specifications/
3845 * Revision 1.0e:
3846 * Chapter 2: Required and optional PCI config registers
3847 * Chapter 3: NVMe control registers
3848 * Chapter 7.3: Reset behavior
3849 */
3850static int nvme_disable_and_flr(struct pci_dev *dev, int probe)
3851{
3852 void __iomem *bar;
3853 u16 cmd;
3854 u32 cfg;
3855
3856 if (dev->class != PCI_CLASS_STORAGE_EXPRESS ||
3857 !pcie_has_flr(dev) || !pci_resource_start(dev, 0))
3858 return -ENOTTY;
3859
3860 if (probe)
3861 return 0;
3862
3863 bar = pci_iomap(dev, 0, NVME_REG_CC + sizeof(cfg));
3864 if (!bar)
3865 return -ENOTTY;
3866
3867 pci_read_config_word(dev, PCI_COMMAND, &cmd);
3868 pci_write_config_word(dev, PCI_COMMAND, cmd | PCI_COMMAND_MEMORY);
3869
3870 cfg = readl(bar + NVME_REG_CC);
3871
3872 /* Disable controller if enabled */
3873 if (cfg & NVME_CC_ENABLE) {
3874 u32 cap = readl(bar + NVME_REG_CAP);
3875 unsigned long timeout;
3876
3877 /*
3878 * Per nvme_disable_ctrl() skip shutdown notification as it
3879 * could complete commands to the admin queue. We only intend
3880 * to quiesce the device before reset.
3881 */
3882 cfg &= ~(NVME_CC_SHN_MASK | NVME_CC_ENABLE);
3883
3884 writel(cfg, bar + NVME_REG_CC);
3885
3886 /*
3887 * Some controllers require an additional delay here, see
3888 * NVME_QUIRK_DELAY_BEFORE_CHK_RDY. None of those are yet
3889 * supported by this quirk.
3890 */
3891
3892 /* Cap register provides max timeout in 500ms increments */
3893 timeout = ((NVME_CAP_TIMEOUT(cap) + 1) * HZ / 2) + jiffies;
3894
3895 for (;;) {
3896 u32 status = readl(bar + NVME_REG_CSTS);
3897
3898 /* Ready status becomes zero on disable complete */
3899 if (!(status & NVME_CSTS_RDY))
3900 break;
3901
3902 msleep(100);
3903
3904 if (time_after(jiffies, timeout)) {
3905 pci_warn(dev, "Timeout waiting for NVMe ready status to clear after disable\n");
3906 break;
3907 }
3908 }
3909 }
3910
3911 pci_iounmap(dev, bar);
3912
3913 pcie_flr(dev);
3914
3915 return 0;
3916}
3917
3918/*
3919 * Intel DC P3700 NVMe controller will timeout waiting for ready status
3920 * to change after NVMe enable if the driver starts interacting with the
3921 * device too soon after FLR. A 250ms delay after FLR has heuristically
3922 * proven to produce reliably working results for device assignment cases.
3923 */
3924static int delay_250ms_after_flr(struct pci_dev *dev, int probe)
3925{
3926 if (!pcie_has_flr(dev))
3927 return -ENOTTY;
3928
3929 if (probe)
3930 return 0;
3931
3932 pcie_flr(dev);
3933
3934 msleep(250);
3935
3936 return 0;
3937}
3938
3939#define PCI_DEVICE_ID_HINIC_VF 0x375E
3940#define HINIC_VF_FLR_TYPE 0x1000
3941#define HINIC_VF_FLR_CAP_BIT (1UL << 30)
3942#define HINIC_VF_OP 0xE80
3943#define HINIC_VF_FLR_PROC_BIT (1UL << 18)
3944#define HINIC_OPERATION_TIMEOUT 15000 /* 15 seconds */
3945
3946/* Device-specific reset method for Huawei Intelligent NIC virtual functions */
3947static int reset_hinic_vf_dev(struct pci_dev *pdev, int probe)
3948{
3949 unsigned long timeout;
3950 void __iomem *bar;
3951 u32 val;
3952
3953 if (probe)
3954 return 0;
3955
3956 bar = pci_iomap(pdev, 0, 0);
3957 if (!bar)
3958 return -ENOTTY;
3959
3960 /* Get and check firmware capabilities */
3961 val = ioread32be(bar + HINIC_VF_FLR_TYPE);
3962 if (!(val & HINIC_VF_FLR_CAP_BIT)) {
3963 pci_iounmap(pdev, bar);
3964 return -ENOTTY;
3965 }
3966
3967 /* Set HINIC_VF_FLR_PROC_BIT for the start of FLR */
3968 val = ioread32be(bar + HINIC_VF_OP);
3969 val = val | HINIC_VF_FLR_PROC_BIT;
3970 iowrite32be(val, bar + HINIC_VF_OP);
3971
3972 pcie_flr(pdev);
3973
3974 /*
3975 * The device must recapture its Bus and Device Numbers after FLR
3976 * in order generate Completions. Issue a config write to let the
3977 * device capture this information.
3978 */
3979 pci_write_config_word(pdev, PCI_VENDOR_ID, 0);
3980
3981 /* Firmware clears HINIC_VF_FLR_PROC_BIT when reset is complete */
3982 timeout = jiffies + msecs_to_jiffies(HINIC_OPERATION_TIMEOUT);
3983 do {
3984 val = ioread32be(bar + HINIC_VF_OP);
3985 if (!(val & HINIC_VF_FLR_PROC_BIT))
3986 goto reset_complete;
3987 msleep(20);
3988 } while (time_before(jiffies, timeout));
3989
3990 val = ioread32be(bar + HINIC_VF_OP);
3991 if (!(val & HINIC_VF_FLR_PROC_BIT))
3992 goto reset_complete;
3993
3994 pci_warn(pdev, "Reset dev timeout, FLR ack reg: %#010x\n", val);
3995
3996reset_complete:
3997 pci_iounmap(pdev, bar);
3998
3999 return 0;
4000}
4001
4002static const struct pci_dev_reset_methods pci_dev_reset_methods[] = {
4003 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82599_SFP_VF,
4004 reset_intel_82599_sfp_virtfn },
4005 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IVB_M_VGA,
4006 reset_ivb_igd },
4007 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IVB_M2_VGA,
4008 reset_ivb_igd },
4009 { PCI_VENDOR_ID_SAMSUNG, 0xa804, nvme_disable_and_flr },
4010 { PCI_VENDOR_ID_INTEL, 0x0953, delay_250ms_after_flr },
4011 { PCI_VENDOR_ID_INTEL, 0x0a54, delay_250ms_after_flr },
4012 { PCI_VENDOR_ID_CHELSIO, PCI_ANY_ID,
4013 reset_chelsio_generic_dev },
4014 { PCI_VENDOR_ID_HUAWEI, PCI_DEVICE_ID_HINIC_VF,
4015 reset_hinic_vf_dev },
4016 { 0 }
4017};
4018
4019/*
4020 * These device-specific reset methods are here rather than in a driver
4021 * because when a host assigns a device to a guest VM, the host may need
4022 * to reset the device but probably doesn't have a driver for it.
4023 */
4024int pci_dev_specific_reset(struct pci_dev *dev, int probe)
4025{
4026 const struct pci_dev_reset_methods *i;
4027
4028 for (i = pci_dev_reset_methods; i->reset; i++) {
4029 if ((i->vendor == dev->vendor ||
4030 i->vendor == (u16)PCI_ANY_ID) &&
4031 (i->device == dev->device ||
4032 i->device == (u16)PCI_ANY_ID))
4033 return i->reset(dev, probe);
4034 }
4035
4036 return -ENOTTY;
4037}
4038
4039static void quirk_dma_func0_alias(struct pci_dev *dev)
4040{
4041 if (PCI_FUNC(dev->devfn) != 0)
4042 pci_add_dma_alias(dev, PCI_DEVFN(PCI_SLOT(dev->devfn), 0), 1);
4043}
4044
4045/*
4046 * https://bugzilla.redhat.com/show_bug.cgi?id=605888
4047 *
4048 * Some Ricoh devices use function 0 as the PCIe requester ID for DMA.
4049 */
4050DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_RICOH, 0xe832, quirk_dma_func0_alias);
4051DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_RICOH, 0xe476, quirk_dma_func0_alias);
4052
4053static void quirk_dma_func1_alias(struct pci_dev *dev)
4054{
4055 if (PCI_FUNC(dev->devfn) != 1)
4056 pci_add_dma_alias(dev, PCI_DEVFN(PCI_SLOT(dev->devfn), 1), 1);
4057}
4058
4059/*
4060 * Marvell 88SE9123 uses function 1 as the requester ID for DMA. In some
4061 * SKUs function 1 is present and is a legacy IDE controller, in other
4062 * SKUs this function is not present, making this a ghost requester.
4063 * https://bugzilla.kernel.org/show_bug.cgi?id=42679
4064 */
4065DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9120,
4066 quirk_dma_func1_alias);
4067DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9123,
4068 quirk_dma_func1_alias);
4069DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9128,
4070 quirk_dma_func1_alias);
4071/* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c14 */
4072DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9130,
4073 quirk_dma_func1_alias);
4074DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9170,
4075 quirk_dma_func1_alias);
4076/* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c47 + c57 */
4077DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9172,
4078 quirk_dma_func1_alias);
4079/* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c59 */
4080DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x917a,
4081 quirk_dma_func1_alias);
4082/* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c78 */
4083DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9182,
4084 quirk_dma_func1_alias);
4085/* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c134 */
4086DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9183,
4087 quirk_dma_func1_alias);
4088/* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c46 */
4089DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x91a0,
4090 quirk_dma_func1_alias);
4091/* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c135 */
4092DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9215,
4093 quirk_dma_func1_alias);
4094/* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c127 */
4095DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9220,
4096 quirk_dma_func1_alias);
4097/* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c49 */
4098DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9230,
4099 quirk_dma_func1_alias);
4100DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TTI, 0x0642,
4101 quirk_dma_func1_alias);
4102DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TTI, 0x0645,
4103 quirk_dma_func1_alias);
4104/* https://bugs.gentoo.org/show_bug.cgi?id=497630 */
4105DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_JMICRON,
4106 PCI_DEVICE_ID_JMICRON_JMB388_ESD,
4107 quirk_dma_func1_alias);
4108/* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c117 */
4109DECLARE_PCI_FIXUP_HEADER(0x1c28, /* Lite-On */
4110 0x0122, /* Plextor M6E (Marvell 88SS9183)*/
4111 quirk_dma_func1_alias);
4112
4113/*
4114 * Some devices DMA with the wrong devfn, not just the wrong function.
4115 * quirk_fixed_dma_alias() uses this table to create fixed aliases, where
4116 * the alias is "fixed" and independent of the device devfn.
4117 *
4118 * For example, the Adaptec 3405 is a PCIe card with an Intel 80333 I/O
4119 * processor. To software, this appears as a PCIe-to-PCI/X bridge with a
4120 * single device on the secondary bus. In reality, the single exposed
4121 * device at 0e.0 is the Address Translation Unit (ATU) of the controller
4122 * that provides a bridge to the internal bus of the I/O processor. The
4123 * controller supports private devices, which can be hidden from PCI config
4124 * space. In the case of the Adaptec 3405, a private device at 01.0
4125 * appears to be the DMA engine, which therefore needs to become a DMA
4126 * alias for the device.
4127 */
4128static const struct pci_device_id fixed_dma_alias_tbl[] = {
4129 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x0285,
4130 PCI_VENDOR_ID_ADAPTEC2, 0x02bb), /* Adaptec 3405 */
4131 .driver_data = PCI_DEVFN(1, 0) },
4132 { PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x0285,
4133 PCI_VENDOR_ID_ADAPTEC2, 0x02bc), /* Adaptec 3805 */
4134 .driver_data = PCI_DEVFN(1, 0) },
4135 { 0 }
4136};
4137
4138static void quirk_fixed_dma_alias(struct pci_dev *dev)
4139{
4140 const struct pci_device_id *id;
4141
4142 id = pci_match_id(fixed_dma_alias_tbl, dev);
4143 if (id)
4144 pci_add_dma_alias(dev, id->driver_data, 1);
4145}
4146DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ADAPTEC2, 0x0285, quirk_fixed_dma_alias);
4147
4148/*
4149 * A few PCIe-to-PCI bridges fail to expose a PCIe capability, resulting in
4150 * using the wrong DMA alias for the device. Some of these devices can be
4151 * used as either forward or reverse bridges, so we need to test whether the
4152 * device is operating in the correct mode. We could probably apply this
4153 * quirk to PCI_ANY_ID, but for now we'll just use known offenders. The test
4154 * is for a non-root, non-PCIe bridge where the upstream device is PCIe and
4155 * is not a PCIe-to-PCI bridge, then @pdev is actually a PCIe-to-PCI bridge.
4156 */
4157static void quirk_use_pcie_bridge_dma_alias(struct pci_dev *pdev)
4158{
4159 if (!pci_is_root_bus(pdev->bus) &&
4160 pdev->hdr_type == PCI_HEADER_TYPE_BRIDGE &&
4161 !pci_is_pcie(pdev) && pci_is_pcie(pdev->bus->self) &&
4162 pci_pcie_type(pdev->bus->self) != PCI_EXP_TYPE_PCI_BRIDGE)
4163 pdev->dev_flags |= PCI_DEV_FLAG_PCIE_BRIDGE_ALIAS;
4164}
4165/* ASM1083/1085, https://bugzilla.kernel.org/show_bug.cgi?id=44881#c46 */
4166DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ASMEDIA, 0x1080,
4167 quirk_use_pcie_bridge_dma_alias);
4168/* Tundra 8113, https://bugzilla.kernel.org/show_bug.cgi?id=44881#c43 */
4169DECLARE_PCI_FIXUP_HEADER(0x10e3, 0x8113, quirk_use_pcie_bridge_dma_alias);
4170/* ITE 8892, https://bugzilla.kernel.org/show_bug.cgi?id=73551 */
4171DECLARE_PCI_FIXUP_HEADER(0x1283, 0x8892, quirk_use_pcie_bridge_dma_alias);
4172/* ITE 8893 has the same problem as the 8892 */
4173DECLARE_PCI_FIXUP_HEADER(0x1283, 0x8893, quirk_use_pcie_bridge_dma_alias);
4174/* Intel 82801, https://bugzilla.kernel.org/show_bug.cgi?id=44881#c49 */
4175DECLARE_PCI_FIXUP_HEADER(0x8086, 0x244e, quirk_use_pcie_bridge_dma_alias);
4176
4177/*
4178 * MIC x200 NTB forwards PCIe traffic using multiple alien RIDs. They have to
4179 * be added as aliases to the DMA device in order to allow buffer access
4180 * when IOMMU is enabled. Following devfns have to match RIT-LUT table
4181 * programmed in the EEPROM.
4182 */
4183static void quirk_mic_x200_dma_alias(struct pci_dev *pdev)
4184{
4185 pci_add_dma_alias(pdev, PCI_DEVFN(0x10, 0x0), 1);
4186 pci_add_dma_alias(pdev, PCI_DEVFN(0x11, 0x0), 1);
4187 pci_add_dma_alias(pdev, PCI_DEVFN(0x12, 0x3), 1);
4188}
4189DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2260, quirk_mic_x200_dma_alias);
4190DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2264, quirk_mic_x200_dma_alias);
4191
4192/*
4193 * Intel Visual Compute Accelerator (VCA) is a family of PCIe add-in devices
4194 * exposing computational units via Non Transparent Bridges (NTB, PEX 87xx).
4195 *
4196 * Similarly to MIC x200, we need to add DMA aliases to allow buffer access
4197 * when IOMMU is enabled. These aliases allow computational unit access to
4198 * host memory. These aliases mark the whole VCA device as one IOMMU
4199 * group.
4200 *
4201 * All possible slot numbers (0x20) are used, since we are unable to tell
4202 * what slot is used on other side. This quirk is intended for both host
4203 * and computational unit sides. The VCA devices have up to five functions
4204 * (four for DMA channels and one additional).
4205 */
4206static void quirk_pex_vca_alias(struct pci_dev *pdev)
4207{
4208 const unsigned int num_pci_slots = 0x20;
4209 unsigned int slot;
4210
4211 for (slot = 0; slot < num_pci_slots; slot++)
4212 pci_add_dma_alias(pdev, PCI_DEVFN(slot, 0x0), 5);
4213}
4214DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2954, quirk_pex_vca_alias);
4215DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2955, quirk_pex_vca_alias);
4216DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2956, quirk_pex_vca_alias);
4217DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2958, quirk_pex_vca_alias);
4218DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2959, quirk_pex_vca_alias);
4219DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x295A, quirk_pex_vca_alias);
4220
4221/*
4222 * The IOMMU and interrupt controller on Broadcom Vulcan/Cavium ThunderX2 are
4223 * associated not at the root bus, but at a bridge below. This quirk avoids
4224 * generating invalid DMA aliases.
4225 */
4226static void quirk_bridge_cavm_thrx2_pcie_root(struct pci_dev *pdev)
4227{
4228 pdev->dev_flags |= PCI_DEV_FLAGS_BRIDGE_XLATE_ROOT;
4229}
4230DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM, 0x9000,
4231 quirk_bridge_cavm_thrx2_pcie_root);
4232DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM, 0x9084,
4233 quirk_bridge_cavm_thrx2_pcie_root);
4234
4235/*
4236 * Intersil/Techwell TW686[4589]-based video capture cards have an empty (zero)
4237 * class code. Fix it.
4238 */
4239static void quirk_tw686x_class(struct pci_dev *pdev)
4240{
4241 u32 class = pdev->class;
4242
4243 /* Use "Multimedia controller" class */
4244 pdev->class = (PCI_CLASS_MULTIMEDIA_OTHER << 8) | 0x01;
4245 pci_info(pdev, "TW686x PCI class overridden (%#08x -> %#08x)\n",
4246 class, pdev->class);
4247}
4248DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6864, PCI_CLASS_NOT_DEFINED, 8,
4249 quirk_tw686x_class);
4250DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6865, PCI_CLASS_NOT_DEFINED, 8,
4251 quirk_tw686x_class);
4252DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6868, PCI_CLASS_NOT_DEFINED, 8,
4253 quirk_tw686x_class);
4254DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6869, PCI_CLASS_NOT_DEFINED, 8,
4255 quirk_tw686x_class);
4256
4257/*
4258 * Some devices have problems with Transaction Layer Packets with the Relaxed
4259 * Ordering Attribute set. Such devices should mark themselves and other
4260 * device drivers should check before sending TLPs with RO set.
4261 */
4262static void quirk_relaxedordering_disable(struct pci_dev *dev)
4263{
4264 dev->dev_flags |= PCI_DEV_FLAGS_NO_RELAXED_ORDERING;
4265 pci_info(dev, "Disable Relaxed Ordering Attributes to avoid PCIe Completion erratum\n");
4266}
4267
4268/*
4269 * Intel Xeon processors based on Broadwell/Haswell microarchitecture Root
4270 * Complex have a Flow Control Credit issue which can cause performance
4271 * problems with Upstream Transaction Layer Packets with Relaxed Ordering set.
4272 */
4273DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f01, PCI_CLASS_NOT_DEFINED, 8,
4274 quirk_relaxedordering_disable);
4275DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f02, PCI_CLASS_NOT_DEFINED, 8,
4276 quirk_relaxedordering_disable);
4277DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f03, PCI_CLASS_NOT_DEFINED, 8,
4278 quirk_relaxedordering_disable);
4279DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f04, PCI_CLASS_NOT_DEFINED, 8,
4280 quirk_relaxedordering_disable);
4281DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f05, PCI_CLASS_NOT_DEFINED, 8,
4282 quirk_relaxedordering_disable);
4283DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f06, PCI_CLASS_NOT_DEFINED, 8,
4284 quirk_relaxedordering_disable);
4285DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f07, PCI_CLASS_NOT_DEFINED, 8,
4286 quirk_relaxedordering_disable);
4287DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f08, PCI_CLASS_NOT_DEFINED, 8,
4288 quirk_relaxedordering_disable);
4289DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f09, PCI_CLASS_NOT_DEFINED, 8,
4290 quirk_relaxedordering_disable);
4291DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0a, PCI_CLASS_NOT_DEFINED, 8,
4292 quirk_relaxedordering_disable);
4293DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0b, PCI_CLASS_NOT_DEFINED, 8,
4294 quirk_relaxedordering_disable);
4295DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0c, PCI_CLASS_NOT_DEFINED, 8,
4296 quirk_relaxedordering_disable);
4297DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0d, PCI_CLASS_NOT_DEFINED, 8,
4298 quirk_relaxedordering_disable);
4299DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0e, PCI_CLASS_NOT_DEFINED, 8,
4300 quirk_relaxedordering_disable);
4301DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f01, PCI_CLASS_NOT_DEFINED, 8,
4302 quirk_relaxedordering_disable);
4303DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f02, PCI_CLASS_NOT_DEFINED, 8,
4304 quirk_relaxedordering_disable);
4305DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f03, PCI_CLASS_NOT_DEFINED, 8,
4306 quirk_relaxedordering_disable);
4307DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f04, PCI_CLASS_NOT_DEFINED, 8,
4308 quirk_relaxedordering_disable);
4309DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f05, PCI_CLASS_NOT_DEFINED, 8,
4310 quirk_relaxedordering_disable);
4311DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f06, PCI_CLASS_NOT_DEFINED, 8,
4312 quirk_relaxedordering_disable);
4313DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f07, PCI_CLASS_NOT_DEFINED, 8,
4314 quirk_relaxedordering_disable);
4315DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f08, PCI_CLASS_NOT_DEFINED, 8,
4316 quirk_relaxedordering_disable);
4317DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f09, PCI_CLASS_NOT_DEFINED, 8,
4318 quirk_relaxedordering_disable);
4319DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0a, PCI_CLASS_NOT_DEFINED, 8,
4320 quirk_relaxedordering_disable);
4321DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0b, PCI_CLASS_NOT_DEFINED, 8,
4322 quirk_relaxedordering_disable);
4323DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0c, PCI_CLASS_NOT_DEFINED, 8,
4324 quirk_relaxedordering_disable);
4325DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0d, PCI_CLASS_NOT_DEFINED, 8,
4326 quirk_relaxedordering_disable);
4327DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0e, PCI_CLASS_NOT_DEFINED, 8,
4328 quirk_relaxedordering_disable);
4329
4330/*
4331 * The AMD ARM A1100 (aka "SEATTLE") SoC has a bug in its PCIe Root Complex
4332 * where Upstream Transaction Layer Packets with the Relaxed Ordering
4333 * Attribute clear are allowed to bypass earlier TLPs with Relaxed Ordering
4334 * set. This is a violation of the PCIe 3.0 Transaction Ordering Rules
4335 * outlined in Section 2.4.1 (PCI Express(r) Base Specification Revision 3.0
4336 * November 10, 2010). As a result, on this platform we can't use Relaxed
4337 * Ordering for Upstream TLPs.
4338 */
4339DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AMD, 0x1a00, PCI_CLASS_NOT_DEFINED, 8,
4340 quirk_relaxedordering_disable);
4341DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AMD, 0x1a01, PCI_CLASS_NOT_DEFINED, 8,
4342 quirk_relaxedordering_disable);
4343DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AMD, 0x1a02, PCI_CLASS_NOT_DEFINED, 8,
4344 quirk_relaxedordering_disable);
4345
4346/*
4347 * Per PCIe r3.0, sec 2.2.9, "Completion headers must supply the same
4348 * values for the Attribute as were supplied in the header of the
4349 * corresponding Request, except as explicitly allowed when IDO is used."
4350 *
4351 * If a non-compliant device generates a completion with a different
4352 * attribute than the request, the receiver may accept it (which itself
4353 * seems non-compliant based on sec 2.3.2), or it may handle it as a
4354 * Malformed TLP or an Unexpected Completion, which will probably lead to a
4355 * device access timeout.
4356 *
4357 * If the non-compliant device generates completions with zero attributes
4358 * (instead of copying the attributes from the request), we can work around
4359 * this by disabling the "Relaxed Ordering" and "No Snoop" attributes in
4360 * upstream devices so they always generate requests with zero attributes.
4361 *
4362 * This affects other devices under the same Root Port, but since these
4363 * attributes are performance hints, there should be no functional problem.
4364 *
4365 * Note that Configuration Space accesses are never supposed to have TLP
4366 * Attributes, so we're safe waiting till after any Configuration Space
4367 * accesses to do the Root Port fixup.
4368 */
4369static void quirk_disable_root_port_attributes(struct pci_dev *pdev)
4370{
4371 struct pci_dev *root_port = pcie_find_root_port(pdev);
4372
4373 if (!root_port) {
4374 pci_warn(pdev, "PCIe Completion erratum may cause device errors\n");
4375 return;
4376 }
4377
4378 pci_info(root_port, "Disabling No Snoop/Relaxed Ordering Attributes to avoid PCIe Completion erratum in %s\n",
4379 dev_name(&pdev->dev));
4380 pcie_capability_clear_and_set_word(root_port, PCI_EXP_DEVCTL,
4381 PCI_EXP_DEVCTL_RELAX_EN |
4382 PCI_EXP_DEVCTL_NOSNOOP_EN, 0);
4383}
4384
4385/*
4386 * The Chelsio T5 chip fails to copy TLP Attributes from a Request to the
4387 * Completion it generates.
4388 */
4389static void quirk_chelsio_T5_disable_root_port_attributes(struct pci_dev *pdev)
4390{
4391 /*
4392 * This mask/compare operation selects for Physical Function 4 on a
4393 * T5. We only need to fix up the Root Port once for any of the
4394 * PFs. PF[0..3] have PCI Device IDs of 0x50xx, but PF4 is uniquely
4395 * 0x54xx so we use that one.
4396 */
4397 if ((pdev->device & 0xff00) == 0x5400)
4398 quirk_disable_root_port_attributes(pdev);
4399}
4400DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_CHELSIO, PCI_ANY_ID,
4401 quirk_chelsio_T5_disable_root_port_attributes);
4402
4403/*
4404 * pci_acs_ctrl_enabled - compare desired ACS controls with those provided
4405 * by a device
4406 * @acs_ctrl_req: Bitmask of desired ACS controls
4407 * @acs_ctrl_ena: Bitmask of ACS controls enabled or provided implicitly by
4408 * the hardware design
4409 *
4410 * Return 1 if all ACS controls in the @acs_ctrl_req bitmask are included
4411 * in @acs_ctrl_ena, i.e., the device provides all the access controls the
4412 * caller desires. Return 0 otherwise.
4413 */
4414static int pci_acs_ctrl_enabled(u16 acs_ctrl_req, u16 acs_ctrl_ena)
4415{
4416 if ((acs_ctrl_req & acs_ctrl_ena) == acs_ctrl_req)
4417 return 1;
4418 return 0;
4419}
4420
4421/*
4422 * AMD has indicated that the devices below do not support peer-to-peer
4423 * in any system where they are found in the southbridge with an AMD
4424 * IOMMU in the system. Multifunction devices that do not support
4425 * peer-to-peer between functions can claim to support a subset of ACS.
4426 * Such devices effectively enable request redirect (RR) and completion
4427 * redirect (CR) since all transactions are redirected to the upstream
4428 * root complex.
4429 *
4430 * https://lore.kernel.org/r/201207111426.q6BEQTbh002928@mail.maya.org/
4431 * https://lore.kernel.org/r/20120711165854.GM25282@amd.com/
4432 * https://lore.kernel.org/r/20121005130857.GX4009@amd.com/
4433 *
4434 * 1002:4385 SBx00 SMBus Controller
4435 * 1002:439c SB7x0/SB8x0/SB9x0 IDE Controller
4436 * 1002:4383 SBx00 Azalia (Intel HDA)
4437 * 1002:439d SB7x0/SB8x0/SB9x0 LPC host controller
4438 * 1002:4384 SBx00 PCI to PCI Bridge
4439 * 1002:4399 SB7x0/SB8x0/SB9x0 USB OHCI2 Controller
4440 *
4441 * https://bugzilla.kernel.org/show_bug.cgi?id=81841#c15
4442 *
4443 * 1022:780f [AMD] FCH PCI Bridge
4444 * 1022:7809 [AMD] FCH USB OHCI Controller
4445 */
4446static int pci_quirk_amd_sb_acs(struct pci_dev *dev, u16 acs_flags)
4447{
4448#ifdef CONFIG_ACPI
4449 struct acpi_table_header *header = NULL;
4450 acpi_status status;
4451
4452 /* Targeting multifunction devices on the SB (appears on root bus) */
4453 if (!dev->multifunction || !pci_is_root_bus(dev->bus))
4454 return -ENODEV;
4455
4456 /* The IVRS table describes the AMD IOMMU */
4457 status = acpi_get_table("IVRS", 0, &header);
4458 if (ACPI_FAILURE(status))
4459 return -ENODEV;
4460
4461 acpi_put_table(header);
4462
4463 /* Filter out flags not applicable to multifunction */
4464 acs_flags &= (PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_EC | PCI_ACS_DT);
4465
4466 return pci_acs_ctrl_enabled(acs_flags, PCI_ACS_RR | PCI_ACS_CR);
4467#else
4468 return -ENODEV;
4469#endif
4470}
4471
4472static bool pci_quirk_cavium_acs_match(struct pci_dev *dev)
4473{
4474 if (!pci_is_pcie(dev) || pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT)
4475 return false;
4476
4477 switch (dev->device) {
4478 /*
4479 * Effectively selects all downstream ports for whole ThunderX1
4480 * (which represents 8 SoCs).
4481 */
4482 case 0xa000 ... 0xa7ff: /* ThunderX1 */
4483 case 0xaf84: /* ThunderX2 */
4484 case 0xb884: /* ThunderX3 */
4485 return true;
4486 default:
4487 return false;
4488 }
4489}
4490
4491static int pci_quirk_cavium_acs(struct pci_dev *dev, u16 acs_flags)
4492{
4493 if (!pci_quirk_cavium_acs_match(dev))
4494 return -ENOTTY;
4495
4496 /*
4497 * Cavium Root Ports don't advertise an ACS capability. However,
4498 * the RTL internally implements similar protection as if ACS had
4499 * Source Validation, Request Redirection, Completion Redirection,
4500 * and Upstream Forwarding features enabled. Assert that the
4501 * hardware implements and enables equivalent ACS functionality for
4502 * these flags.
4503 */
4504 return pci_acs_ctrl_enabled(acs_flags,
4505 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4506}
4507
4508static int pci_quirk_xgene_acs(struct pci_dev *dev, u16 acs_flags)
4509{
4510 /*
4511 * X-Gene Root Ports matching this quirk do not allow peer-to-peer
4512 * transactions with others, allowing masking out these bits as if they
4513 * were unimplemented in the ACS capability.
4514 */
4515 return pci_acs_ctrl_enabled(acs_flags,
4516 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4517}
4518
4519/*
4520 * Many Zhaoxin Root Ports and Switch Downstream Ports have no ACS capability.
4521 * But the implementation could block peer-to-peer transactions between them
4522 * and provide ACS-like functionality.
4523 */
4524static int pci_quirk_zhaoxin_pcie_ports_acs(struct pci_dev *dev, u16 acs_flags)
4525{
4526 if (!pci_is_pcie(dev) ||
4527 ((pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT) &&
4528 (pci_pcie_type(dev) != PCI_EXP_TYPE_DOWNSTREAM)))
4529 return -ENOTTY;
4530
4531 switch (dev->device) {
4532 case 0x0710 ... 0x071e:
4533 case 0x0721:
4534 case 0x0723 ... 0x0732:
4535 return pci_acs_ctrl_enabled(acs_flags,
4536 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4537 }
4538
4539 return false;
4540}
4541
4542/*
4543 * Many Intel PCH Root Ports do provide ACS-like features to disable peer
4544 * transactions and validate bus numbers in requests, but do not provide an
4545 * actual PCIe ACS capability. This is the list of device IDs known to fall
4546 * into that category as provided by Intel in Red Hat bugzilla 1037684.
4547 */
4548static const u16 pci_quirk_intel_pch_acs_ids[] = {
4549 /* Ibexpeak PCH */
4550 0x3b42, 0x3b43, 0x3b44, 0x3b45, 0x3b46, 0x3b47, 0x3b48, 0x3b49,
4551 0x3b4a, 0x3b4b, 0x3b4c, 0x3b4d, 0x3b4e, 0x3b4f, 0x3b50, 0x3b51,
4552 /* Cougarpoint PCH */
4553 0x1c10, 0x1c11, 0x1c12, 0x1c13, 0x1c14, 0x1c15, 0x1c16, 0x1c17,
4554 0x1c18, 0x1c19, 0x1c1a, 0x1c1b, 0x1c1c, 0x1c1d, 0x1c1e, 0x1c1f,
4555 /* Pantherpoint PCH */
4556 0x1e10, 0x1e11, 0x1e12, 0x1e13, 0x1e14, 0x1e15, 0x1e16, 0x1e17,
4557 0x1e18, 0x1e19, 0x1e1a, 0x1e1b, 0x1e1c, 0x1e1d, 0x1e1e, 0x1e1f,
4558 /* Lynxpoint-H PCH */
4559 0x8c10, 0x8c11, 0x8c12, 0x8c13, 0x8c14, 0x8c15, 0x8c16, 0x8c17,
4560 0x8c18, 0x8c19, 0x8c1a, 0x8c1b, 0x8c1c, 0x8c1d, 0x8c1e, 0x8c1f,
4561 /* Lynxpoint-LP PCH */
4562 0x9c10, 0x9c11, 0x9c12, 0x9c13, 0x9c14, 0x9c15, 0x9c16, 0x9c17,
4563 0x9c18, 0x9c19, 0x9c1a, 0x9c1b,
4564 /* Wildcat PCH */
4565 0x9c90, 0x9c91, 0x9c92, 0x9c93, 0x9c94, 0x9c95, 0x9c96, 0x9c97,
4566 0x9c98, 0x9c99, 0x9c9a, 0x9c9b,
4567 /* Patsburg (X79) PCH */
4568 0x1d10, 0x1d12, 0x1d14, 0x1d16, 0x1d18, 0x1d1a, 0x1d1c, 0x1d1e,
4569 /* Wellsburg (X99) PCH */
4570 0x8d10, 0x8d11, 0x8d12, 0x8d13, 0x8d14, 0x8d15, 0x8d16, 0x8d17,
4571 0x8d18, 0x8d19, 0x8d1a, 0x8d1b, 0x8d1c, 0x8d1d, 0x8d1e,
4572 /* Lynx Point (9 series) PCH */
4573 0x8c90, 0x8c92, 0x8c94, 0x8c96, 0x8c98, 0x8c9a, 0x8c9c, 0x8c9e,
4574};
4575
4576static bool pci_quirk_intel_pch_acs_match(struct pci_dev *dev)
4577{
4578 int i;
4579
4580 /* Filter out a few obvious non-matches first */
4581 if (!pci_is_pcie(dev) || pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT)
4582 return false;
4583
4584 for (i = 0; i < ARRAY_SIZE(pci_quirk_intel_pch_acs_ids); i++)
4585 if (pci_quirk_intel_pch_acs_ids[i] == dev->device)
4586 return true;
4587
4588 return false;
4589}
4590
4591static int pci_quirk_intel_pch_acs(struct pci_dev *dev, u16 acs_flags)
4592{
4593 if (!pci_quirk_intel_pch_acs_match(dev))
4594 return -ENOTTY;
4595
4596 if (dev->dev_flags & PCI_DEV_FLAGS_ACS_ENABLED_QUIRK)
4597 return pci_acs_ctrl_enabled(acs_flags,
4598 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4599
4600 return pci_acs_ctrl_enabled(acs_flags, 0);
4601}
4602
4603/*
4604 * These QCOM Root Ports do provide ACS-like features to disable peer
4605 * transactions and validate bus numbers in requests, but do not provide an
4606 * actual PCIe ACS capability. Hardware supports source validation but it
4607 * will report the issue as Completer Abort instead of ACS Violation.
4608 * Hardware doesn't support peer-to-peer and each Root Port is a Root
4609 * Complex with unique segment numbers. It is not possible for one Root
4610 * Port to pass traffic to another Root Port. All PCIe transactions are
4611 * terminated inside the Root Port.
4612 */
4613static int pci_quirk_qcom_rp_acs(struct pci_dev *dev, u16 acs_flags)
4614{
4615 return pci_acs_ctrl_enabled(acs_flags,
4616 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4617}
4618
4619/*
4620 * Each of these NXP Root Ports is in a Root Complex with a unique segment
4621 * number and does provide isolation features to disable peer transactions
4622 * and validate bus numbers in requests, but does not provide an ACS
4623 * capability.
4624 */
4625static int pci_quirk_nxp_rp_acs(struct pci_dev *dev, u16 acs_flags)
4626{
4627 return pci_acs_ctrl_enabled(acs_flags,
4628 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4629}
4630
4631static int pci_quirk_al_acs(struct pci_dev *dev, u16 acs_flags)
4632{
4633 if (pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT)
4634 return -ENOTTY;
4635
4636 /*
4637 * Amazon's Annapurna Labs root ports don't include an ACS capability,
4638 * but do include ACS-like functionality. The hardware doesn't support
4639 * peer-to-peer transactions via the root port and each has a unique
4640 * segment number.
4641 *
4642 * Additionally, the root ports cannot send traffic to each other.
4643 */
4644 acs_flags &= ~(PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4645
4646 return acs_flags ? 0 : 1;
4647}
4648
4649/*
4650 * Sunrise Point PCH root ports implement ACS, but unfortunately as shown in
4651 * the datasheet (Intel 100 Series Chipset Family PCH Datasheet, Vol. 2,
4652 * 12.1.46, 12.1.47)[1] this chipset uses dwords for the ACS capability and
4653 * control registers whereas the PCIe spec packs them into words (Rev 3.0,
4654 * 7.16 ACS Extended Capability). The bit definitions are correct, but the
4655 * control register is at offset 8 instead of 6 and we should probably use
4656 * dword accesses to them. This applies to the following PCI Device IDs, as
4657 * found in volume 1 of the datasheet[2]:
4658 *
4659 * 0xa110-0xa11f Sunrise Point-H PCI Express Root Port #{0-16}
4660 * 0xa167-0xa16a Sunrise Point-H PCI Express Root Port #{17-20}
4661 *
4662 * N.B. This doesn't fix what lspci shows.
4663 *
4664 * The 100 series chipset specification update includes this as errata #23[3].
4665 *
4666 * The 200 series chipset (Union Point) has the same bug according to the
4667 * specification update (Intel 200 Series Chipset Family Platform Controller
4668 * Hub, Specification Update, January 2017, Revision 001, Document# 335194-001,
4669 * Errata 22)[4]. Per the datasheet[5], root port PCI Device IDs for this
4670 * chipset include:
4671 *
4672 * 0xa290-0xa29f PCI Express Root port #{0-16}
4673 * 0xa2e7-0xa2ee PCI Express Root port #{17-24}
4674 *
4675 * Mobile chipsets are also affected, 7th & 8th Generation
4676 * Specification update confirms ACS errata 22, status no fix: (7th Generation
4677 * Intel Processor Family I/O for U/Y Platforms and 8th Generation Intel
4678 * Processor Family I/O for U Quad Core Platforms Specification Update,
4679 * August 2017, Revision 002, Document#: 334660-002)[6]
4680 * Device IDs from I/O datasheet: (7th Generation Intel Processor Family I/O
4681 * for U/Y Platforms and 8th Generation Intel ® Processor Family I/O for U
4682 * Quad Core Platforms, Vol 1 of 2, August 2017, Document#: 334658-003)[7]
4683 *
4684 * 0x9d10-0x9d1b PCI Express Root port #{1-12}
4685 *
4686 * [1] https://www.intel.com/content/www/us/en/chipsets/100-series-chipset-datasheet-vol-2.html
4687 * [2] https://www.intel.com/content/www/us/en/chipsets/100-series-chipset-datasheet-vol-1.html
4688 * [3] https://www.intel.com/content/www/us/en/chipsets/100-series-chipset-spec-update.html
4689 * [4] https://www.intel.com/content/www/us/en/chipsets/200-series-chipset-pch-spec-update.html
4690 * [5] https://www.intel.com/content/www/us/en/chipsets/200-series-chipset-pch-datasheet-vol-1.html
4691 * [6] https://www.intel.com/content/www/us/en/processors/core/7th-gen-core-family-mobile-u-y-processor-lines-i-o-spec-update.html
4692 * [7] https://www.intel.com/content/www/us/en/processors/core/7th-gen-core-family-mobile-u-y-processor-lines-i-o-datasheet-vol-1.html
4693 */
4694static bool pci_quirk_intel_spt_pch_acs_match(struct pci_dev *dev)
4695{
4696 if (!pci_is_pcie(dev) || pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT)
4697 return false;
4698
4699 switch (dev->device) {
4700 case 0xa110 ... 0xa11f: case 0xa167 ... 0xa16a: /* Sunrise Point */
4701 case 0xa290 ... 0xa29f: case 0xa2e7 ... 0xa2ee: /* Union Point */
4702 case 0x9d10 ... 0x9d1b: /* 7th & 8th Gen Mobile */
4703 return true;
4704 }
4705
4706 return false;
4707}
4708
4709#define INTEL_SPT_ACS_CTRL (PCI_ACS_CAP + 4)
4710
4711static int pci_quirk_intel_spt_pch_acs(struct pci_dev *dev, u16 acs_flags)
4712{
4713 int pos;
4714 u32 cap, ctrl;
4715
4716 if (!pci_quirk_intel_spt_pch_acs_match(dev))
4717 return -ENOTTY;
4718
4719 pos = dev->acs_cap;
4720 if (!pos)
4721 return -ENOTTY;
4722
4723 /* see pci_acs_flags_enabled() */
4724 pci_read_config_dword(dev, pos + PCI_ACS_CAP, &cap);
4725 acs_flags &= (cap | PCI_ACS_EC);
4726
4727 pci_read_config_dword(dev, pos + INTEL_SPT_ACS_CTRL, &ctrl);
4728
4729 return pci_acs_ctrl_enabled(acs_flags, ctrl);
4730}
4731
4732static int pci_quirk_mf_endpoint_acs(struct pci_dev *dev, u16 acs_flags)
4733{
4734 /*
4735 * SV, TB, and UF are not relevant to multifunction endpoints.
4736 *
4737 * Multifunction devices are only required to implement RR, CR, and DT
4738 * in their ACS capability if they support peer-to-peer transactions.
4739 * Devices matching this quirk have been verified by the vendor to not
4740 * perform peer-to-peer with other functions, allowing us to mask out
4741 * these bits as if they were unimplemented in the ACS capability.
4742 */
4743 return pci_acs_ctrl_enabled(acs_flags,
4744 PCI_ACS_SV | PCI_ACS_TB | PCI_ACS_RR |
4745 PCI_ACS_CR | PCI_ACS_UF | PCI_ACS_DT);
4746}
4747
4748static int pci_quirk_rciep_acs(struct pci_dev *dev, u16 acs_flags)
4749{
4750 /*
4751 * Intel RCiEP's are required to allow p2p only on translated
4752 * addresses. Refer to Intel VT-d specification, r3.1, sec 3.16,
4753 * "Root-Complex Peer to Peer Considerations".
4754 */
4755 if (pci_pcie_type(dev) != PCI_EXP_TYPE_RC_END)
4756 return -ENOTTY;
4757
4758 return pci_acs_ctrl_enabled(acs_flags,
4759 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4760}
4761
4762static int pci_quirk_brcm_acs(struct pci_dev *dev, u16 acs_flags)
4763{
4764 /*
4765 * iProc PAXB Root Ports don't advertise an ACS capability, but
4766 * they do not allow peer-to-peer transactions between Root Ports.
4767 * Allow each Root Port to be in a separate IOMMU group by masking
4768 * SV/RR/CR/UF bits.
4769 */
4770 return pci_acs_ctrl_enabled(acs_flags,
4771 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
4772}
4773
4774static const struct pci_dev_acs_enabled {
4775 u16 vendor;
4776 u16 device;
4777 int (*acs_enabled)(struct pci_dev *dev, u16 acs_flags);
4778} pci_dev_acs_enabled[] = {
4779 { PCI_VENDOR_ID_ATI, 0x4385, pci_quirk_amd_sb_acs },
4780 { PCI_VENDOR_ID_ATI, 0x439c, pci_quirk_amd_sb_acs },
4781 { PCI_VENDOR_ID_ATI, 0x4383, pci_quirk_amd_sb_acs },
4782 { PCI_VENDOR_ID_ATI, 0x439d, pci_quirk_amd_sb_acs },
4783 { PCI_VENDOR_ID_ATI, 0x4384, pci_quirk_amd_sb_acs },
4784 { PCI_VENDOR_ID_ATI, 0x4399, pci_quirk_amd_sb_acs },
4785 { PCI_VENDOR_ID_AMD, 0x780f, pci_quirk_amd_sb_acs },
4786 { PCI_VENDOR_ID_AMD, 0x7809, pci_quirk_amd_sb_acs },
4787 { PCI_VENDOR_ID_SOLARFLARE, 0x0903, pci_quirk_mf_endpoint_acs },
4788 { PCI_VENDOR_ID_SOLARFLARE, 0x0923, pci_quirk_mf_endpoint_acs },
4789 { PCI_VENDOR_ID_SOLARFLARE, 0x0A03, pci_quirk_mf_endpoint_acs },
4790 { PCI_VENDOR_ID_INTEL, 0x10C6, pci_quirk_mf_endpoint_acs },
4791 { PCI_VENDOR_ID_INTEL, 0x10DB, pci_quirk_mf_endpoint_acs },
4792 { PCI_VENDOR_ID_INTEL, 0x10DD, pci_quirk_mf_endpoint_acs },
4793 { PCI_VENDOR_ID_INTEL, 0x10E1, pci_quirk_mf_endpoint_acs },
4794 { PCI_VENDOR_ID_INTEL, 0x10F1, pci_quirk_mf_endpoint_acs },
4795 { PCI_VENDOR_ID_INTEL, 0x10F7, pci_quirk_mf_endpoint_acs },
4796 { PCI_VENDOR_ID_INTEL, 0x10F8, pci_quirk_mf_endpoint_acs },
4797 { PCI_VENDOR_ID_INTEL, 0x10F9, pci_quirk_mf_endpoint_acs },
4798 { PCI_VENDOR_ID_INTEL, 0x10FA, pci_quirk_mf_endpoint_acs },
4799 { PCI_VENDOR_ID_INTEL, 0x10FB, pci_quirk_mf_endpoint_acs },
4800 { PCI_VENDOR_ID_INTEL, 0x10FC, pci_quirk_mf_endpoint_acs },
4801 { PCI_VENDOR_ID_INTEL, 0x1507, pci_quirk_mf_endpoint_acs },
4802 { PCI_VENDOR_ID_INTEL, 0x1514, pci_quirk_mf_endpoint_acs },
4803 { PCI_VENDOR_ID_INTEL, 0x151C, pci_quirk_mf_endpoint_acs },
4804 { PCI_VENDOR_ID_INTEL, 0x1529, pci_quirk_mf_endpoint_acs },
4805 { PCI_VENDOR_ID_INTEL, 0x152A, pci_quirk_mf_endpoint_acs },
4806 { PCI_VENDOR_ID_INTEL, 0x154D, pci_quirk_mf_endpoint_acs },
4807 { PCI_VENDOR_ID_INTEL, 0x154F, pci_quirk_mf_endpoint_acs },
4808 { PCI_VENDOR_ID_INTEL, 0x1551, pci_quirk_mf_endpoint_acs },
4809 { PCI_VENDOR_ID_INTEL, 0x1558, pci_quirk_mf_endpoint_acs },
4810 /* 82580 */
4811 { PCI_VENDOR_ID_INTEL, 0x1509, pci_quirk_mf_endpoint_acs },
4812 { PCI_VENDOR_ID_INTEL, 0x150E, pci_quirk_mf_endpoint_acs },
4813 { PCI_VENDOR_ID_INTEL, 0x150F, pci_quirk_mf_endpoint_acs },
4814 { PCI_VENDOR_ID_INTEL, 0x1510, pci_quirk_mf_endpoint_acs },
4815 { PCI_VENDOR_ID_INTEL, 0x1511, pci_quirk_mf_endpoint_acs },
4816 { PCI_VENDOR_ID_INTEL, 0x1516, pci_quirk_mf_endpoint_acs },
4817 { PCI_VENDOR_ID_INTEL, 0x1527, pci_quirk_mf_endpoint_acs },
4818 /* 82576 */
4819 { PCI_VENDOR_ID_INTEL, 0x10C9, pci_quirk_mf_endpoint_acs },
4820 { PCI_VENDOR_ID_INTEL, 0x10E6, pci_quirk_mf_endpoint_acs },
4821 { PCI_VENDOR_ID_INTEL, 0x10E7, pci_quirk_mf_endpoint_acs },
4822 { PCI_VENDOR_ID_INTEL, 0x10E8, pci_quirk_mf_endpoint_acs },
4823 { PCI_VENDOR_ID_INTEL, 0x150A, pci_quirk_mf_endpoint_acs },
4824 { PCI_VENDOR_ID_INTEL, 0x150D, pci_quirk_mf_endpoint_acs },
4825 { PCI_VENDOR_ID_INTEL, 0x1518, pci_quirk_mf_endpoint_acs },
4826 { PCI_VENDOR_ID_INTEL, 0x1526, pci_quirk_mf_endpoint_acs },
4827 /* 82575 */
4828 { PCI_VENDOR_ID_INTEL, 0x10A7, pci_quirk_mf_endpoint_acs },
4829 { PCI_VENDOR_ID_INTEL, 0x10A9, pci_quirk_mf_endpoint_acs },
4830 { PCI_VENDOR_ID_INTEL, 0x10D6, pci_quirk_mf_endpoint_acs },
4831 /* I350 */
4832 { PCI_VENDOR_ID_INTEL, 0x1521, pci_quirk_mf_endpoint_acs },
4833 { PCI_VENDOR_ID_INTEL, 0x1522, pci_quirk_mf_endpoint_acs },
4834 { PCI_VENDOR_ID_INTEL, 0x1523, pci_quirk_mf_endpoint_acs },
4835 { PCI_VENDOR_ID_INTEL, 0x1524, pci_quirk_mf_endpoint_acs },
4836 /* 82571 (Quads omitted due to non-ACS switch) */
4837 { PCI_VENDOR_ID_INTEL, 0x105E, pci_quirk_mf_endpoint_acs },
4838 { PCI_VENDOR_ID_INTEL, 0x105F, pci_quirk_mf_endpoint_acs },
4839 { PCI_VENDOR_ID_INTEL, 0x1060, pci_quirk_mf_endpoint_acs },
4840 { PCI_VENDOR_ID_INTEL, 0x10D9, pci_quirk_mf_endpoint_acs },
4841 /* I219 */
4842 { PCI_VENDOR_ID_INTEL, 0x15b7, pci_quirk_mf_endpoint_acs },
4843 { PCI_VENDOR_ID_INTEL, 0x15b8, pci_quirk_mf_endpoint_acs },
4844 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_quirk_rciep_acs },
4845 /* QCOM QDF2xxx root ports */
4846 { PCI_VENDOR_ID_QCOM, 0x0400, pci_quirk_qcom_rp_acs },
4847 { PCI_VENDOR_ID_QCOM, 0x0401, pci_quirk_qcom_rp_acs },
4848 /* HXT SD4800 root ports. The ACS design is same as QCOM QDF2xxx */
4849 { PCI_VENDOR_ID_HXT, 0x0401, pci_quirk_qcom_rp_acs },
4850 /* Intel PCH root ports */
4851 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_quirk_intel_pch_acs },
4852 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_quirk_intel_spt_pch_acs },
4853 { 0x19a2, 0x710, pci_quirk_mf_endpoint_acs }, /* Emulex BE3-R */
4854 { 0x10df, 0x720, pci_quirk_mf_endpoint_acs }, /* Emulex Skyhawk-R */
4855 /* Cavium ThunderX */
4856 { PCI_VENDOR_ID_CAVIUM, PCI_ANY_ID, pci_quirk_cavium_acs },
4857 /* Cavium multi-function devices */
4858 { PCI_VENDOR_ID_CAVIUM, 0xA026, pci_quirk_mf_endpoint_acs },
4859 { PCI_VENDOR_ID_CAVIUM, 0xA059, pci_quirk_mf_endpoint_acs },
4860 { PCI_VENDOR_ID_CAVIUM, 0xA060, pci_quirk_mf_endpoint_acs },
4861 /* APM X-Gene */
4862 { PCI_VENDOR_ID_AMCC, 0xE004, pci_quirk_xgene_acs },
4863 /* Ampere Computing */
4864 { PCI_VENDOR_ID_AMPERE, 0xE005, pci_quirk_xgene_acs },
4865 { PCI_VENDOR_ID_AMPERE, 0xE006, pci_quirk_xgene_acs },
4866 { PCI_VENDOR_ID_AMPERE, 0xE007, pci_quirk_xgene_acs },
4867 { PCI_VENDOR_ID_AMPERE, 0xE008, pci_quirk_xgene_acs },
4868 { PCI_VENDOR_ID_AMPERE, 0xE009, pci_quirk_xgene_acs },
4869 { PCI_VENDOR_ID_AMPERE, 0xE00A, pci_quirk_xgene_acs },
4870 { PCI_VENDOR_ID_AMPERE, 0xE00B, pci_quirk_xgene_acs },
4871 { PCI_VENDOR_ID_AMPERE, 0xE00C, pci_quirk_xgene_acs },
4872 /* Broadcom multi-function device */
4873 { PCI_VENDOR_ID_BROADCOM, 0x16D7, pci_quirk_mf_endpoint_acs },
4874 { PCI_VENDOR_ID_BROADCOM, 0xD714, pci_quirk_brcm_acs },
4875 /* Amazon Annapurna Labs */
4876 { PCI_VENDOR_ID_AMAZON_ANNAPURNA_LABS, 0x0031, pci_quirk_al_acs },
4877 /* Zhaoxin multi-function devices */
4878 { PCI_VENDOR_ID_ZHAOXIN, 0x3038, pci_quirk_mf_endpoint_acs },
4879 { PCI_VENDOR_ID_ZHAOXIN, 0x3104, pci_quirk_mf_endpoint_acs },
4880 { PCI_VENDOR_ID_ZHAOXIN, 0x9083, pci_quirk_mf_endpoint_acs },
4881 /* NXP root ports, xx=16, 12, or 08 cores */
4882 /* LX2xx0A : without security features + CAN-FD */
4883 { PCI_VENDOR_ID_NXP, 0x8d81, pci_quirk_nxp_rp_acs },
4884 { PCI_VENDOR_ID_NXP, 0x8da1, pci_quirk_nxp_rp_acs },
4885 { PCI_VENDOR_ID_NXP, 0x8d83, pci_quirk_nxp_rp_acs },
4886 /* LX2xx0C : security features + CAN-FD */
4887 { PCI_VENDOR_ID_NXP, 0x8d80, pci_quirk_nxp_rp_acs },
4888 { PCI_VENDOR_ID_NXP, 0x8da0, pci_quirk_nxp_rp_acs },
4889 { PCI_VENDOR_ID_NXP, 0x8d82, pci_quirk_nxp_rp_acs },
4890 /* LX2xx0E : security features + CAN */
4891 { PCI_VENDOR_ID_NXP, 0x8d90, pci_quirk_nxp_rp_acs },
4892 { PCI_VENDOR_ID_NXP, 0x8db0, pci_quirk_nxp_rp_acs },
4893 { PCI_VENDOR_ID_NXP, 0x8d92, pci_quirk_nxp_rp_acs },
4894 /* LX2xx0N : without security features + CAN */
4895 { PCI_VENDOR_ID_NXP, 0x8d91, pci_quirk_nxp_rp_acs },
4896 { PCI_VENDOR_ID_NXP, 0x8db1, pci_quirk_nxp_rp_acs },
4897 { PCI_VENDOR_ID_NXP, 0x8d93, pci_quirk_nxp_rp_acs },
4898 /* LX2xx2A : without security features + CAN-FD */
4899 { PCI_VENDOR_ID_NXP, 0x8d89, pci_quirk_nxp_rp_acs },
4900 { PCI_VENDOR_ID_NXP, 0x8da9, pci_quirk_nxp_rp_acs },
4901 { PCI_VENDOR_ID_NXP, 0x8d8b, pci_quirk_nxp_rp_acs },
4902 /* LX2xx2C : security features + CAN-FD */
4903 { PCI_VENDOR_ID_NXP, 0x8d88, pci_quirk_nxp_rp_acs },
4904 { PCI_VENDOR_ID_NXP, 0x8da8, pci_quirk_nxp_rp_acs },
4905 { PCI_VENDOR_ID_NXP, 0x8d8a, pci_quirk_nxp_rp_acs },
4906 /* LX2xx2E : security features + CAN */
4907 { PCI_VENDOR_ID_NXP, 0x8d98, pci_quirk_nxp_rp_acs },
4908 { PCI_VENDOR_ID_NXP, 0x8db8, pci_quirk_nxp_rp_acs },
4909 { PCI_VENDOR_ID_NXP, 0x8d9a, pci_quirk_nxp_rp_acs },
4910 /* LX2xx2N : without security features + CAN */
4911 { PCI_VENDOR_ID_NXP, 0x8d99, pci_quirk_nxp_rp_acs },
4912 { PCI_VENDOR_ID_NXP, 0x8db9, pci_quirk_nxp_rp_acs },
4913 { PCI_VENDOR_ID_NXP, 0x8d9b, pci_quirk_nxp_rp_acs },
4914 /* Zhaoxin Root/Downstream Ports */
4915 { PCI_VENDOR_ID_ZHAOXIN, PCI_ANY_ID, pci_quirk_zhaoxin_pcie_ports_acs },
4916 { 0 }
4917};
4918
4919/*
4920 * pci_dev_specific_acs_enabled - check whether device provides ACS controls
4921 * @dev: PCI device
4922 * @acs_flags: Bitmask of desired ACS controls
4923 *
4924 * Returns:
4925 * -ENOTTY: No quirk applies to this device; we can't tell whether the
4926 * device provides the desired controls
4927 * 0: Device does not provide all the desired controls
4928 * >0: Device provides all the controls in @acs_flags
4929 */
4930int pci_dev_specific_acs_enabled(struct pci_dev *dev, u16 acs_flags)
4931{
4932 const struct pci_dev_acs_enabled *i;
4933 int ret;
4934
4935 /*
4936 * Allow devices that do not expose standard PCIe ACS capabilities
4937 * or control to indicate their support here. Multi-function express
4938 * devices which do not allow internal peer-to-peer between functions,
4939 * but do not implement PCIe ACS may wish to return true here.
4940 */
4941 for (i = pci_dev_acs_enabled; i->acs_enabled; i++) {
4942 if ((i->vendor == dev->vendor ||
4943 i->vendor == (u16)PCI_ANY_ID) &&
4944 (i->device == dev->device ||
4945 i->device == (u16)PCI_ANY_ID)) {
4946 ret = i->acs_enabled(dev, acs_flags);
4947 if (ret >= 0)
4948 return ret;
4949 }
4950 }
4951
4952 return -ENOTTY;
4953}
4954
4955/* Config space offset of Root Complex Base Address register */
4956#define INTEL_LPC_RCBA_REG 0xf0
4957/* 31:14 RCBA address */
4958#define INTEL_LPC_RCBA_MASK 0xffffc000
4959/* RCBA Enable */
4960#define INTEL_LPC_RCBA_ENABLE (1 << 0)
4961
4962/* Backbone Scratch Pad Register */
4963#define INTEL_BSPR_REG 0x1104
4964/* Backbone Peer Non-Posted Disable */
4965#define INTEL_BSPR_REG_BPNPD (1 << 8)
4966/* Backbone Peer Posted Disable */
4967#define INTEL_BSPR_REG_BPPD (1 << 9)
4968
4969/* Upstream Peer Decode Configuration Register */
4970#define INTEL_UPDCR_REG 0x1014
4971/* 5:0 Peer Decode Enable bits */
4972#define INTEL_UPDCR_REG_MASK 0x3f
4973
4974static int pci_quirk_enable_intel_lpc_acs(struct pci_dev *dev)
4975{
4976 u32 rcba, bspr, updcr;
4977 void __iomem *rcba_mem;
4978
4979 /*
4980 * Read the RCBA register from the LPC (D31:F0). PCH root ports
4981 * are D28:F* and therefore get probed before LPC, thus we can't
4982 * use pci_get_slot()/pci_read_config_dword() here.
4983 */
4984 pci_bus_read_config_dword(dev->bus, PCI_DEVFN(31, 0),
4985 INTEL_LPC_RCBA_REG, &rcba);
4986 if (!(rcba & INTEL_LPC_RCBA_ENABLE))
4987 return -EINVAL;
4988
4989 rcba_mem = ioremap(rcba & INTEL_LPC_RCBA_MASK,
4990 PAGE_ALIGN(INTEL_UPDCR_REG));
4991 if (!rcba_mem)
4992 return -ENOMEM;
4993
4994 /*
4995 * The BSPR can disallow peer cycles, but it's set by soft strap and
4996 * therefore read-only. If both posted and non-posted peer cycles are
4997 * disallowed, we're ok. If either are allowed, then we need to use
4998 * the UPDCR to disable peer decodes for each port. This provides the
4999 * PCIe ACS equivalent of PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF
5000 */
5001 bspr = readl(rcba_mem + INTEL_BSPR_REG);
5002 bspr &= INTEL_BSPR_REG_BPNPD | INTEL_BSPR_REG_BPPD;
5003 if (bspr != (INTEL_BSPR_REG_BPNPD | INTEL_BSPR_REG_BPPD)) {
5004 updcr = readl(rcba_mem + INTEL_UPDCR_REG);
5005 if (updcr & INTEL_UPDCR_REG_MASK) {
5006 pci_info(dev, "Disabling UPDCR peer decodes\n");
5007 updcr &= ~INTEL_UPDCR_REG_MASK;
5008 writel(updcr, rcba_mem + INTEL_UPDCR_REG);
5009 }
5010 }
5011
5012 iounmap(rcba_mem);
5013 return 0;
5014}
5015
5016/* Miscellaneous Port Configuration register */
5017#define INTEL_MPC_REG 0xd8
5018/* MPC: Invalid Receive Bus Number Check Enable */
5019#define INTEL_MPC_REG_IRBNCE (1 << 26)
5020
5021static void pci_quirk_enable_intel_rp_mpc_acs(struct pci_dev *dev)
5022{
5023 u32 mpc;
5024
5025 /*
5026 * When enabled, the IRBNCE bit of the MPC register enables the
5027 * equivalent of PCI ACS Source Validation (PCI_ACS_SV), which
5028 * ensures that requester IDs fall within the bus number range
5029 * of the bridge. Enable if not already.
5030 */
5031 pci_read_config_dword(dev, INTEL_MPC_REG, &mpc);
5032 if (!(mpc & INTEL_MPC_REG_IRBNCE)) {
5033 pci_info(dev, "Enabling MPC IRBNCE\n");
5034 mpc |= INTEL_MPC_REG_IRBNCE;
5035 pci_write_config_word(dev, INTEL_MPC_REG, mpc);
5036 }
5037}
5038
5039/*
5040 * Currently this quirk does the equivalent of
5041 * PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF
5042 *
5043 * TODO: This quirk also needs to do equivalent of PCI_ACS_TB,
5044 * if dev->external_facing || dev->untrusted
5045 */
5046static int pci_quirk_enable_intel_pch_acs(struct pci_dev *dev)
5047{
5048 if (!pci_quirk_intel_pch_acs_match(dev))
5049 return -ENOTTY;
5050
5051 if (pci_quirk_enable_intel_lpc_acs(dev)) {
5052 pci_warn(dev, "Failed to enable Intel PCH ACS quirk\n");
5053 return 0;
5054 }
5055
5056 pci_quirk_enable_intel_rp_mpc_acs(dev);
5057
5058 dev->dev_flags |= PCI_DEV_FLAGS_ACS_ENABLED_QUIRK;
5059
5060 pci_info(dev, "Intel PCH root port ACS workaround enabled\n");
5061
5062 return 0;
5063}
5064
5065static int pci_quirk_enable_intel_spt_pch_acs(struct pci_dev *dev)
5066{
5067 int pos;
5068 u32 cap, ctrl;
5069
5070 if (!pci_quirk_intel_spt_pch_acs_match(dev))
5071 return -ENOTTY;
5072
5073 pos = dev->acs_cap;
5074 if (!pos)
5075 return -ENOTTY;
5076
5077 pci_read_config_dword(dev, pos + PCI_ACS_CAP, &cap);
5078 pci_read_config_dword(dev, pos + INTEL_SPT_ACS_CTRL, &ctrl);
5079
5080 ctrl |= (cap & PCI_ACS_SV);
5081 ctrl |= (cap & PCI_ACS_RR);
5082 ctrl |= (cap & PCI_ACS_CR);
5083 ctrl |= (cap & PCI_ACS_UF);
5084
5085 if (dev->external_facing || dev->untrusted)
5086 ctrl |= (cap & PCI_ACS_TB);
5087
5088 pci_write_config_dword(dev, pos + INTEL_SPT_ACS_CTRL, ctrl);
5089
5090 pci_info(dev, "Intel SPT PCH root port ACS workaround enabled\n");
5091
5092 return 0;
5093}
5094
5095static int pci_quirk_disable_intel_spt_pch_acs_redir(struct pci_dev *dev)
5096{
5097 int pos;
5098 u32 cap, ctrl;
5099
5100 if (!pci_quirk_intel_spt_pch_acs_match(dev))
5101 return -ENOTTY;
5102
5103 pos = dev->acs_cap;
5104 if (!pos)
5105 return -ENOTTY;
5106
5107 pci_read_config_dword(dev, pos + PCI_ACS_CAP, &cap);
5108 pci_read_config_dword(dev, pos + INTEL_SPT_ACS_CTRL, &ctrl);
5109
5110 ctrl &= ~(PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_EC);
5111
5112 pci_write_config_dword(dev, pos + INTEL_SPT_ACS_CTRL, ctrl);
5113
5114 pci_info(dev, "Intel SPT PCH root port workaround: disabled ACS redirect\n");
5115
5116 return 0;
5117}
5118
5119static const struct pci_dev_acs_ops {
5120 u16 vendor;
5121 u16 device;
5122 int (*enable_acs)(struct pci_dev *dev);
5123 int (*disable_acs_redir)(struct pci_dev *dev);
5124} pci_dev_acs_ops[] = {
5125 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID,
5126 .enable_acs = pci_quirk_enable_intel_pch_acs,
5127 },
5128 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID,
5129 .enable_acs = pci_quirk_enable_intel_spt_pch_acs,
5130 .disable_acs_redir = pci_quirk_disable_intel_spt_pch_acs_redir,
5131 },
5132};
5133
5134int pci_dev_specific_enable_acs(struct pci_dev *dev)
5135{
5136 const struct pci_dev_acs_ops *p;
5137 int i, ret;
5138
5139 for (i = 0; i < ARRAY_SIZE(pci_dev_acs_ops); i++) {
5140 p = &pci_dev_acs_ops[i];
5141 if ((p->vendor == dev->vendor ||
5142 p->vendor == (u16)PCI_ANY_ID) &&
5143 (p->device == dev->device ||
5144 p->device == (u16)PCI_ANY_ID) &&
5145 p->enable_acs) {
5146 ret = p->enable_acs(dev);
5147 if (ret >= 0)
5148 return ret;
5149 }
5150 }
5151
5152 return -ENOTTY;
5153}
5154
5155int pci_dev_specific_disable_acs_redir(struct pci_dev *dev)
5156{
5157 const struct pci_dev_acs_ops *p;
5158 int i, ret;
5159
5160 for (i = 0; i < ARRAY_SIZE(pci_dev_acs_ops); i++) {
5161 p = &pci_dev_acs_ops[i];
5162 if ((p->vendor == dev->vendor ||
5163 p->vendor == (u16)PCI_ANY_ID) &&
5164 (p->device == dev->device ||
5165 p->device == (u16)PCI_ANY_ID) &&
5166 p->disable_acs_redir) {
5167 ret = p->disable_acs_redir(dev);
5168 if (ret >= 0)
5169 return ret;
5170 }
5171 }
5172
5173 return -ENOTTY;
5174}
5175
5176/*
5177 * The PCI capabilities list for Intel DH895xCC VFs (device ID 0x0443) with
5178 * QuickAssist Technology (QAT) is prematurely terminated in hardware. The
5179 * Next Capability pointer in the MSI Capability Structure should point to
5180 * the PCIe Capability Structure but is incorrectly hardwired as 0 terminating
5181 * the list.
5182 */
5183static void quirk_intel_qat_vf_cap(struct pci_dev *pdev)
5184{
5185 int pos, i = 0;
5186 u8 next_cap;
5187 u16 reg16, *cap;
5188 struct pci_cap_saved_state *state;
5189
5190 /* Bail if the hardware bug is fixed */
5191 if (pdev->pcie_cap || pci_find_capability(pdev, PCI_CAP_ID_EXP))
5192 return;
5193
5194 /* Bail if MSI Capability Structure is not found for some reason */
5195 pos = pci_find_capability(pdev, PCI_CAP_ID_MSI);
5196 if (!pos)
5197 return;
5198
5199 /*
5200 * Bail if Next Capability pointer in the MSI Capability Structure
5201 * is not the expected incorrect 0x00.
5202 */
5203 pci_read_config_byte(pdev, pos + 1, &next_cap);
5204 if (next_cap)
5205 return;
5206
5207 /*
5208 * PCIe Capability Structure is expected to be at 0x50 and should
5209 * terminate the list (Next Capability pointer is 0x00). Verify
5210 * Capability Id and Next Capability pointer is as expected.
5211 * Open-code some of set_pcie_port_type() and pci_cfg_space_size_ext()
5212 * to correctly set kernel data structures which have already been
5213 * set incorrectly due to the hardware bug.
5214 */
5215 pos = 0x50;
5216 pci_read_config_word(pdev, pos, ®16);
5217 if (reg16 == (0x0000 | PCI_CAP_ID_EXP)) {
5218 u32 status;
5219#ifndef PCI_EXP_SAVE_REGS
5220#define PCI_EXP_SAVE_REGS 7
5221#endif
5222 int size = PCI_EXP_SAVE_REGS * sizeof(u16);
5223
5224 pdev->pcie_cap = pos;
5225 pci_read_config_word(pdev, pos + PCI_EXP_FLAGS, ®16);
5226 pdev->pcie_flags_reg = reg16;
5227 pci_read_config_word(pdev, pos + PCI_EXP_DEVCAP, ®16);
5228 pdev->pcie_mpss = reg16 & PCI_EXP_DEVCAP_PAYLOAD;
5229
5230 pdev->cfg_size = PCI_CFG_SPACE_EXP_SIZE;
5231 if (pci_read_config_dword(pdev, PCI_CFG_SPACE_SIZE, &status) !=
5232 PCIBIOS_SUCCESSFUL || (status == 0xffffffff))
5233 pdev->cfg_size = PCI_CFG_SPACE_SIZE;
5234
5235 if (pci_find_saved_cap(pdev, PCI_CAP_ID_EXP))
5236 return;
5237
5238 /* Save PCIe cap */
5239 state = kzalloc(sizeof(*state) + size, GFP_KERNEL);
5240 if (!state)
5241 return;
5242
5243 state->cap.cap_nr = PCI_CAP_ID_EXP;
5244 state->cap.cap_extended = 0;
5245 state->cap.size = size;
5246 cap = (u16 *)&state->cap.data[0];
5247 pcie_capability_read_word(pdev, PCI_EXP_DEVCTL, &cap[i++]);
5248 pcie_capability_read_word(pdev, PCI_EXP_LNKCTL, &cap[i++]);
5249 pcie_capability_read_word(pdev, PCI_EXP_SLTCTL, &cap[i++]);
5250 pcie_capability_read_word(pdev, PCI_EXP_RTCTL, &cap[i++]);
5251 pcie_capability_read_word(pdev, PCI_EXP_DEVCTL2, &cap[i++]);
5252 pcie_capability_read_word(pdev, PCI_EXP_LNKCTL2, &cap[i++]);
5253 pcie_capability_read_word(pdev, PCI_EXP_SLTCTL2, &cap[i++]);
5254 hlist_add_head(&state->next, &pdev->saved_cap_space);
5255 }
5256}
5257DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x443, quirk_intel_qat_vf_cap);
5258
5259/*
5260 * FLR may cause the following to devices to hang:
5261 *
5262 * AMD Starship/Matisse HD Audio Controller 0x1487
5263 * AMD Starship USB 3.0 Host Controller 0x148c
5264 * AMD Matisse USB 3.0 Host Controller 0x149c
5265 * Intel 82579LM Gigabit Ethernet Controller 0x1502
5266 * Intel 82579V Gigabit Ethernet Controller 0x1503
5267 *
5268 */
5269static void quirk_no_flr(struct pci_dev *dev)
5270{
5271 dev->dev_flags |= PCI_DEV_FLAGS_NO_FLR_RESET;
5272}
5273DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AMD, 0x1487, quirk_no_flr);
5274DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AMD, 0x148c, quirk_no_flr);
5275DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AMD, 0x149c, quirk_no_flr);
5276DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1502, quirk_no_flr);
5277DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1503, quirk_no_flr);
5278
5279static void quirk_no_ext_tags(struct pci_dev *pdev)
5280{
5281 struct pci_host_bridge *bridge = pci_find_host_bridge(pdev->bus);
5282
5283 if (!bridge)
5284 return;
5285
5286 bridge->no_ext_tags = 1;
5287 pci_info(pdev, "disabling Extended Tags (this device can't handle them)\n");
5288
5289 pci_walk_bus(bridge->bus, pci_configure_extended_tags, NULL);
5290}
5291DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0132, quirk_no_ext_tags);
5292DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0140, quirk_no_ext_tags);
5293DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0141, quirk_no_ext_tags);
5294DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0142, quirk_no_ext_tags);
5295DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0144, quirk_no_ext_tags);
5296DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0420, quirk_no_ext_tags);
5297DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0422, quirk_no_ext_tags);
5298
5299#ifdef CONFIG_PCI_ATS
5300/*
5301 * Some devices require additional driver setup to enable ATS. Don't use
5302 * ATS for those devices as ATS will be enabled before the driver has had a
5303 * chance to load and configure the device.
5304 */
5305static void quirk_amd_harvest_no_ats(struct pci_dev *pdev)
5306{
5307 if ((pdev->device == 0x7312 && pdev->revision != 0x00) ||
5308 (pdev->device == 0x7340 && pdev->revision != 0xc5) ||
5309 (pdev->device == 0x7341 && pdev->revision != 0x00))
5310 return;
5311
5312 if (pdev->device == 0x15d8) {
5313 if (pdev->revision == 0xcf &&
5314 pdev->subsystem_vendor == 0xea50 &&
5315 (pdev->subsystem_device == 0xce19 ||
5316 pdev->subsystem_device == 0xcc10 ||
5317 pdev->subsystem_device == 0xcc08))
5318 goto no_ats;
5319 else
5320 return;
5321 }
5322
5323no_ats:
5324 pci_info(pdev, "disabling ATS\n");
5325 pdev->ats_cap = 0;
5326}
5327
5328/* AMD Stoney platform GPU */
5329DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x98e4, quirk_amd_harvest_no_ats);
5330/* AMD Iceland dGPU */
5331DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x6900, quirk_amd_harvest_no_ats);
5332/* AMD Navi10 dGPU */
5333DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7312, quirk_amd_harvest_no_ats);
5334/* AMD Navi14 dGPU */
5335DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7340, quirk_amd_harvest_no_ats);
5336DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7341, quirk_amd_harvest_no_ats);
5337/* AMD Raven platform iGPU */
5338DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x15d8, quirk_amd_harvest_no_ats);
5339#endif /* CONFIG_PCI_ATS */
5340
5341/* Freescale PCIe doesn't support MSI in RC mode */
5342static void quirk_fsl_no_msi(struct pci_dev *pdev)
5343{
5344 if (pci_pcie_type(pdev) == PCI_EXP_TYPE_ROOT_PORT)
5345 pdev->no_msi = 1;
5346}
5347DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_FREESCALE, PCI_ANY_ID, quirk_fsl_no_msi);
5348
5349/*
5350 * Although not allowed by the spec, some multi-function devices have
5351 * dependencies of one function (consumer) on another (supplier). For the
5352 * consumer to work in D0, the supplier must also be in D0. Create a
5353 * device link from the consumer to the supplier to enforce this
5354 * dependency. Runtime PM is allowed by default on the consumer to prevent
5355 * it from permanently keeping the supplier awake.
5356 */
5357static void pci_create_device_link(struct pci_dev *pdev, unsigned int consumer,
5358 unsigned int supplier, unsigned int class,
5359 unsigned int class_shift)
5360{
5361 struct pci_dev *supplier_pdev;
5362
5363 if (PCI_FUNC(pdev->devfn) != consumer)
5364 return;
5365
5366 supplier_pdev = pci_get_domain_bus_and_slot(pci_domain_nr(pdev->bus),
5367 pdev->bus->number,
5368 PCI_DEVFN(PCI_SLOT(pdev->devfn), supplier));
5369 if (!supplier_pdev || (supplier_pdev->class >> class_shift) != class) {
5370 pci_dev_put(supplier_pdev);
5371 return;
5372 }
5373
5374 if (device_link_add(&pdev->dev, &supplier_pdev->dev,
5375 DL_FLAG_STATELESS | DL_FLAG_PM_RUNTIME))
5376 pci_info(pdev, "D0 power state depends on %s\n",
5377 pci_name(supplier_pdev));
5378 else
5379 pci_err(pdev, "Cannot enforce power dependency on %s\n",
5380 pci_name(supplier_pdev));
5381
5382 pm_runtime_allow(&pdev->dev);
5383 pci_dev_put(supplier_pdev);
5384}
5385
5386/*
5387 * Create device link for GPUs with integrated HDA controller for streaming
5388 * audio to attached displays.
5389 */
5390static void quirk_gpu_hda(struct pci_dev *hda)
5391{
5392 pci_create_device_link(hda, 1, 0, PCI_BASE_CLASS_DISPLAY, 16);
5393}
5394DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_ATI, PCI_ANY_ID,
5395 PCI_CLASS_MULTIMEDIA_HD_AUDIO, 8, quirk_gpu_hda);
5396DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_AMD, PCI_ANY_ID,
5397 PCI_CLASS_MULTIMEDIA_HD_AUDIO, 8, quirk_gpu_hda);
5398DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
5399 PCI_CLASS_MULTIMEDIA_HD_AUDIO, 8, quirk_gpu_hda);
5400
5401/*
5402 * Create device link for GPUs with integrated USB xHCI Host
5403 * controller to VGA.
5404 */
5405static void quirk_gpu_usb(struct pci_dev *usb)
5406{
5407 pci_create_device_link(usb, 2, 0, PCI_BASE_CLASS_DISPLAY, 16);
5408}
5409DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
5410 PCI_CLASS_SERIAL_USB, 8, quirk_gpu_usb);
5411DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_ATI, PCI_ANY_ID,
5412 PCI_CLASS_SERIAL_USB, 8, quirk_gpu_usb);
5413
5414/*
5415 * Create device link for GPUs with integrated Type-C UCSI controller
5416 * to VGA. Currently there is no class code defined for UCSI device over PCI
5417 * so using UNKNOWN class for now and it will be updated when UCSI
5418 * over PCI gets a class code.
5419 */
5420#define PCI_CLASS_SERIAL_UNKNOWN 0x0c80
5421static void quirk_gpu_usb_typec_ucsi(struct pci_dev *ucsi)
5422{
5423 pci_create_device_link(ucsi, 3, 0, PCI_BASE_CLASS_DISPLAY, 16);
5424}
5425DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
5426 PCI_CLASS_SERIAL_UNKNOWN, 8,
5427 quirk_gpu_usb_typec_ucsi);
5428DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_ATI, PCI_ANY_ID,
5429 PCI_CLASS_SERIAL_UNKNOWN, 8,
5430 quirk_gpu_usb_typec_ucsi);
5431
5432/*
5433 * Enable the NVIDIA GPU integrated HDA controller if the BIOS left it
5434 * disabled. https://devtalk.nvidia.com/default/topic/1024022
5435 */
5436static void quirk_nvidia_hda(struct pci_dev *gpu)
5437{
5438 u8 hdr_type;
5439 u32 val;
5440
5441 /* There was no integrated HDA controller before MCP89 */
5442 if (gpu->device < PCI_DEVICE_ID_NVIDIA_GEFORCE_320M)
5443 return;
5444
5445 /* Bit 25 at offset 0x488 enables the HDA controller */
5446 pci_read_config_dword(gpu, 0x488, &val);
5447 if (val & BIT(25))
5448 return;
5449
5450 pci_info(gpu, "Enabling HDA controller\n");
5451 pci_write_config_dword(gpu, 0x488, val | BIT(25));
5452
5453 /* The GPU becomes a multi-function device when the HDA is enabled */
5454 pci_read_config_byte(gpu, PCI_HEADER_TYPE, &hdr_type);
5455 gpu->multifunction = !!(hdr_type & 0x80);
5456}
5457DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
5458 PCI_BASE_CLASS_DISPLAY, 16, quirk_nvidia_hda);
5459DECLARE_PCI_FIXUP_CLASS_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
5460 PCI_BASE_CLASS_DISPLAY, 16, quirk_nvidia_hda);
5461
5462/*
5463 * Some IDT switches incorrectly flag an ACS Source Validation error on
5464 * completions for config read requests even though PCIe r4.0, sec
5465 * 6.12.1.1, says that completions are never affected by ACS Source
5466 * Validation. Here's the text of IDT 89H32H8G3-YC, erratum #36:
5467 *
5468 * Item #36 - Downstream port applies ACS Source Validation to Completions
5469 * Section 6.12.1.1 of the PCI Express Base Specification 3.1 states that
5470 * completions are never affected by ACS Source Validation. However,
5471 * completions received by a downstream port of the PCIe switch from a
5472 * device that has not yet captured a PCIe bus number are incorrectly
5473 * dropped by ACS Source Validation by the switch downstream port.
5474 *
5475 * The workaround suggested by IDT is to issue a config write to the
5476 * downstream device before issuing the first config read. This allows the
5477 * downstream device to capture its bus and device numbers (see PCIe r4.0,
5478 * sec 2.2.9), thus avoiding the ACS error on the completion.
5479 *
5480 * However, we don't know when the device is ready to accept the config
5481 * write, so we do config reads until we receive a non-Config Request Retry
5482 * Status, then do the config write.
5483 *
5484 * To avoid hitting the erratum when doing the config reads, we disable ACS
5485 * SV around this process.
5486 */
5487int pci_idt_bus_quirk(struct pci_bus *bus, int devfn, u32 *l, int timeout)
5488{
5489 int pos;
5490 u16 ctrl = 0;
5491 bool found;
5492 struct pci_dev *bridge = bus->self;
5493
5494 pos = bridge->acs_cap;
5495
5496 /* Disable ACS SV before initial config reads */
5497 if (pos) {
5498 pci_read_config_word(bridge, pos + PCI_ACS_CTRL, &ctrl);
5499 if (ctrl & PCI_ACS_SV)
5500 pci_write_config_word(bridge, pos + PCI_ACS_CTRL,
5501 ctrl & ~PCI_ACS_SV);
5502 }
5503
5504 found = pci_bus_generic_read_dev_vendor_id(bus, devfn, l, timeout);
5505
5506 /* Write Vendor ID (read-only) so the endpoint latches its bus/dev */
5507 if (found)
5508 pci_bus_write_config_word(bus, devfn, PCI_VENDOR_ID, 0);
5509
5510 /* Re-enable ACS_SV if it was previously enabled */
5511 if (ctrl & PCI_ACS_SV)
5512 pci_write_config_word(bridge, pos + PCI_ACS_CTRL, ctrl);
5513
5514 return found;
5515}
5516
5517/*
5518 * Microsemi Switchtec NTB uses devfn proxy IDs to move TLPs between
5519 * NT endpoints via the internal switch fabric. These IDs replace the
5520 * originating requestor ID TLPs which access host memory on peer NTB
5521 * ports. Therefore, all proxy IDs must be aliased to the NTB device
5522 * to permit access when the IOMMU is turned on.
5523 */
5524static void quirk_switchtec_ntb_dma_alias(struct pci_dev *pdev)
5525{
5526 void __iomem *mmio;
5527 struct ntb_info_regs __iomem *mmio_ntb;
5528 struct ntb_ctrl_regs __iomem *mmio_ctrl;
5529 u64 partition_map;
5530 u8 partition;
5531 int pp;
5532
5533 if (pci_enable_device(pdev)) {
5534 pci_err(pdev, "Cannot enable Switchtec device\n");
5535 return;
5536 }
5537
5538 mmio = pci_iomap(pdev, 0, 0);
5539 if (mmio == NULL) {
5540 pci_disable_device(pdev);
5541 pci_err(pdev, "Cannot iomap Switchtec device\n");
5542 return;
5543 }
5544
5545 pci_info(pdev, "Setting Switchtec proxy ID aliases\n");
5546
5547 mmio_ntb = mmio + SWITCHTEC_GAS_NTB_OFFSET;
5548 mmio_ctrl = (void __iomem *) mmio_ntb + SWITCHTEC_NTB_REG_CTRL_OFFSET;
5549
5550 partition = ioread8(&mmio_ntb->partition_id);
5551
5552 partition_map = ioread32(&mmio_ntb->ep_map);
5553 partition_map |= ((u64) ioread32(&mmio_ntb->ep_map + 4)) << 32;
5554 partition_map &= ~(1ULL << partition);
5555
5556 for (pp = 0; pp < (sizeof(partition_map) * 8); pp++) {
5557 struct ntb_ctrl_regs __iomem *mmio_peer_ctrl;
5558 u32 table_sz = 0;
5559 int te;
5560
5561 if (!(partition_map & (1ULL << pp)))
5562 continue;
5563
5564 pci_dbg(pdev, "Processing partition %d\n", pp);
5565
5566 mmio_peer_ctrl = &mmio_ctrl[pp];
5567
5568 table_sz = ioread16(&mmio_peer_ctrl->req_id_table_size);
5569 if (!table_sz) {
5570 pci_warn(pdev, "Partition %d table_sz 0\n", pp);
5571 continue;
5572 }
5573
5574 if (table_sz > 512) {
5575 pci_warn(pdev,
5576 "Invalid Switchtec partition %d table_sz %d\n",
5577 pp, table_sz);
5578 continue;
5579 }
5580
5581 for (te = 0; te < table_sz; te++) {
5582 u32 rid_entry;
5583 u8 devfn;
5584
5585 rid_entry = ioread32(&mmio_peer_ctrl->req_id_table[te]);
5586 devfn = (rid_entry >> 1) & 0xFF;
5587 pci_dbg(pdev,
5588 "Aliasing Partition %d Proxy ID %02x.%d\n",
5589 pp, PCI_SLOT(devfn), PCI_FUNC(devfn));
5590 pci_add_dma_alias(pdev, devfn, 1);
5591 }
5592 }
5593
5594 pci_iounmap(pdev, mmio);
5595 pci_disable_device(pdev);
5596}
5597#define SWITCHTEC_QUIRK(vid) \
5598 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_MICROSEMI, vid, \
5599 PCI_CLASS_BRIDGE_OTHER, 8, quirk_switchtec_ntb_dma_alias)
5600
5601SWITCHTEC_QUIRK(0x8531); /* PFX 24xG3 */
5602SWITCHTEC_QUIRK(0x8532); /* PFX 32xG3 */
5603SWITCHTEC_QUIRK(0x8533); /* PFX 48xG3 */
5604SWITCHTEC_QUIRK(0x8534); /* PFX 64xG3 */
5605SWITCHTEC_QUIRK(0x8535); /* PFX 80xG3 */
5606SWITCHTEC_QUIRK(0x8536); /* PFX 96xG3 */
5607SWITCHTEC_QUIRK(0x8541); /* PSX 24xG3 */
5608SWITCHTEC_QUIRK(0x8542); /* PSX 32xG3 */
5609SWITCHTEC_QUIRK(0x8543); /* PSX 48xG3 */
5610SWITCHTEC_QUIRK(0x8544); /* PSX 64xG3 */
5611SWITCHTEC_QUIRK(0x8545); /* PSX 80xG3 */
5612SWITCHTEC_QUIRK(0x8546); /* PSX 96xG3 */
5613SWITCHTEC_QUIRK(0x8551); /* PAX 24XG3 */
5614SWITCHTEC_QUIRK(0x8552); /* PAX 32XG3 */
5615SWITCHTEC_QUIRK(0x8553); /* PAX 48XG3 */
5616SWITCHTEC_QUIRK(0x8554); /* PAX 64XG3 */
5617SWITCHTEC_QUIRK(0x8555); /* PAX 80XG3 */
5618SWITCHTEC_QUIRK(0x8556); /* PAX 96XG3 */
5619SWITCHTEC_QUIRK(0x8561); /* PFXL 24XG3 */
5620SWITCHTEC_QUIRK(0x8562); /* PFXL 32XG3 */
5621SWITCHTEC_QUIRK(0x8563); /* PFXL 48XG3 */
5622SWITCHTEC_QUIRK(0x8564); /* PFXL 64XG3 */
5623SWITCHTEC_QUIRK(0x8565); /* PFXL 80XG3 */
5624SWITCHTEC_QUIRK(0x8566); /* PFXL 96XG3 */
5625SWITCHTEC_QUIRK(0x8571); /* PFXI 24XG3 */
5626SWITCHTEC_QUIRK(0x8572); /* PFXI 32XG3 */
5627SWITCHTEC_QUIRK(0x8573); /* PFXI 48XG3 */
5628SWITCHTEC_QUIRK(0x8574); /* PFXI 64XG3 */
5629SWITCHTEC_QUIRK(0x8575); /* PFXI 80XG3 */
5630SWITCHTEC_QUIRK(0x8576); /* PFXI 96XG3 */
5631SWITCHTEC_QUIRK(0x4000); /* PFX 100XG4 */
5632SWITCHTEC_QUIRK(0x4084); /* PFX 84XG4 */
5633SWITCHTEC_QUIRK(0x4068); /* PFX 68XG4 */
5634SWITCHTEC_QUIRK(0x4052); /* PFX 52XG4 */
5635SWITCHTEC_QUIRK(0x4036); /* PFX 36XG4 */
5636SWITCHTEC_QUIRK(0x4028); /* PFX 28XG4 */
5637SWITCHTEC_QUIRK(0x4100); /* PSX 100XG4 */
5638SWITCHTEC_QUIRK(0x4184); /* PSX 84XG4 */
5639SWITCHTEC_QUIRK(0x4168); /* PSX 68XG4 */
5640SWITCHTEC_QUIRK(0x4152); /* PSX 52XG4 */
5641SWITCHTEC_QUIRK(0x4136); /* PSX 36XG4 */
5642SWITCHTEC_QUIRK(0x4128); /* PSX 28XG4 */
5643SWITCHTEC_QUIRK(0x4200); /* PAX 100XG4 */
5644SWITCHTEC_QUIRK(0x4284); /* PAX 84XG4 */
5645SWITCHTEC_QUIRK(0x4268); /* PAX 68XG4 */
5646SWITCHTEC_QUIRK(0x4252); /* PAX 52XG4 */
5647SWITCHTEC_QUIRK(0x4236); /* PAX 36XG4 */
5648SWITCHTEC_QUIRK(0x4228); /* PAX 28XG4 */
5649
5650/*
5651 * The PLX NTB uses devfn proxy IDs to move TLPs between NT endpoints.
5652 * These IDs are used to forward responses to the originator on the other
5653 * side of the NTB. Alias all possible IDs to the NTB to permit access when
5654 * the IOMMU is turned on.
5655 */
5656static void quirk_plx_ntb_dma_alias(struct pci_dev *pdev)
5657{
5658 pci_info(pdev, "Setting PLX NTB proxy ID aliases\n");
5659 /* PLX NTB may use all 256 devfns */
5660 pci_add_dma_alias(pdev, 0, 256);
5661}
5662DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_PLX, 0x87b0, quirk_plx_ntb_dma_alias);
5663DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_PLX, 0x87b1, quirk_plx_ntb_dma_alias);
5664
5665/*
5666 * On Lenovo Thinkpad P50 SKUs with a Nvidia Quadro M1000M, the BIOS does
5667 * not always reset the secondary Nvidia GPU between reboots if the system
5668 * is configured to use Hybrid Graphics mode. This results in the GPU
5669 * being left in whatever state it was in during the *previous* boot, which
5670 * causes spurious interrupts from the GPU, which in turn causes us to
5671 * disable the wrong IRQ and end up breaking the touchpad. Unsurprisingly,
5672 * this also completely breaks nouveau.
5673 *
5674 * Luckily, it seems a simple reset of the Nvidia GPU brings it back to a
5675 * clean state and fixes all these issues.
5676 *
5677 * When the machine is configured in Dedicated display mode, the issue
5678 * doesn't occur. Fortunately the GPU advertises NoReset+ when in this
5679 * mode, so we can detect that and avoid resetting it.
5680 */
5681static void quirk_reset_lenovo_thinkpad_p50_nvgpu(struct pci_dev *pdev)
5682{
5683 void __iomem *map;
5684 int ret;
5685
5686 if (pdev->subsystem_vendor != PCI_VENDOR_ID_LENOVO ||
5687 pdev->subsystem_device != 0x222e ||
5688 !pdev->reset_fn)
5689 return;
5690
5691 if (pci_enable_device_mem(pdev))
5692 return;
5693
5694 /*
5695 * Based on nvkm_device_ctor() in
5696 * drivers/gpu/drm/nouveau/nvkm/engine/device/base.c
5697 */
5698 map = pci_iomap(pdev, 0, 0x23000);
5699 if (!map) {
5700 pci_err(pdev, "Can't map MMIO space\n");
5701 goto out_disable;
5702 }
5703
5704 /*
5705 * Make sure the GPU looks like it's been POSTed before resetting
5706 * it.
5707 */
5708 if (ioread32(map + 0x2240c) & 0x2) {
5709 pci_info(pdev, FW_BUG "GPU left initialized by EFI, resetting\n");
5710 ret = pci_reset_bus(pdev);
5711 if (ret < 0)
5712 pci_err(pdev, "Failed to reset GPU: %d\n", ret);
5713 }
5714
5715 iounmap(map);
5716out_disable:
5717 pci_disable_device(pdev);
5718}
5719DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_NVIDIA, 0x13b1,
5720 PCI_CLASS_DISPLAY_VGA, 8,
5721 quirk_reset_lenovo_thinkpad_p50_nvgpu);
5722
5723/*
5724 * Device [1b21:2142]
5725 * When in D0, PME# doesn't get asserted when plugging USB 3.0 device.
5726 */
5727static void pci_fixup_no_d0_pme(struct pci_dev *dev)
5728{
5729 pci_info(dev, "PME# does not work under D0, disabling it\n");
5730 dev->pme_support &= ~(PCI_PM_CAP_PME_D0 >> PCI_PM_CAP_PME_SHIFT);
5731}
5732DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ASMEDIA, 0x2142, pci_fixup_no_d0_pme);
5733
5734/*
5735 * Device 12d8:0x400e [OHCI] and 12d8:0x400f [EHCI]
5736 *
5737 * These devices advertise PME# support in all power states but don't
5738 * reliably assert it.
5739 *
5740 * These devices also advertise MSI, but documentation (PI7C9X440SL.pdf)
5741 * says "The MSI Function is not implemented on this device" in chapters
5742 * 7.3.27, 7.3.29-7.3.31.
5743 */
5744static void pci_fixup_no_msi_no_pme(struct pci_dev *dev)
5745{
5746#ifdef CONFIG_PCI_MSI
5747 pci_info(dev, "MSI is not implemented on this device, disabling it\n");
5748 dev->no_msi = 1;
5749#endif
5750 pci_info(dev, "PME# is unreliable, disabling it\n");
5751 dev->pme_support = 0;
5752}
5753DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_PERICOM, 0x400e, pci_fixup_no_msi_no_pme);
5754DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_PERICOM, 0x400f, pci_fixup_no_msi_no_pme);
5755
5756static void apex_pci_fixup_class(struct pci_dev *pdev)
5757{
5758 pdev->class = (PCI_CLASS_SYSTEM_OTHER << 8) | pdev->class;
5759}
5760DECLARE_PCI_FIXUP_CLASS_HEADER(0x1ac1, 0x089a,
5761 PCI_CLASS_NOT_DEFINED, 8, apex_pci_fixup_class);