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1// SPDX-License-Identifier: GPL-2.0
2/* niu.c: Neptune ethernet driver.
3 *
4 * Copyright (C) 2007, 2008 David S. Miller (davem@davemloft.net)
5 */
6
7#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
8
9#include <linux/module.h>
10#include <linux/init.h>
11#include <linux/interrupt.h>
12#include <linux/pci.h>
13#include <linux/dma-mapping.h>
14#include <linux/netdevice.h>
15#include <linux/ethtool.h>
16#include <linux/etherdevice.h>
17#include <linux/platform_device.h>
18#include <linux/delay.h>
19#include <linux/bitops.h>
20#include <linux/mii.h>
21#include <linux/if.h>
22#include <linux/if_ether.h>
23#include <linux/if_vlan.h>
24#include <linux/ip.h>
25#include <linux/in.h>
26#include <linux/ipv6.h>
27#include <linux/log2.h>
28#include <linux/jiffies.h>
29#include <linux/crc32.h>
30#include <linux/list.h>
31#include <linux/slab.h>
32
33#include <linux/io.h>
34#include <linux/of.h>
35
36#include "niu.h"
37
38/* This driver wants to store a link to a "next page" within the
39 * page struct itself by overloading the content of the "mapping"
40 * member. This is not expected by the page API, but does currently
41 * work. However, the randstruct plugin gets very bothered by this
42 * case because "mapping" (struct address_space) is randomized, so
43 * casts to/from it trigger warnings. Hide this by way of a union,
44 * to create a typed alias of "mapping", since that's how it is
45 * actually being used here.
46 */
47union niu_page {
48 struct page page;
49 struct {
50 unsigned long __flags; /* unused alias of "flags" */
51 struct list_head __lru; /* unused alias of "lru" */
52 struct page *next; /* alias of "mapping" */
53 };
54};
55#define niu_next_page(p) container_of(p, union niu_page, page)->next
56
57#define DRV_MODULE_NAME "niu"
58#define DRV_MODULE_VERSION "1.1"
59#define DRV_MODULE_RELDATE "Apr 22, 2010"
60
61static char version[] =
62 DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
63
64MODULE_AUTHOR("David S. Miller (davem@davemloft.net)");
65MODULE_DESCRIPTION("NIU ethernet driver");
66MODULE_LICENSE("GPL");
67MODULE_VERSION(DRV_MODULE_VERSION);
68
69#ifndef readq
70static u64 readq(void __iomem *reg)
71{
72 return ((u64) readl(reg)) | (((u64) readl(reg + 4UL)) << 32);
73}
74
75static void writeq(u64 val, void __iomem *reg)
76{
77 writel(val & 0xffffffff, reg);
78 writel(val >> 32, reg + 0x4UL);
79}
80#endif
81
82static const struct pci_device_id niu_pci_tbl[] = {
83 {PCI_DEVICE(PCI_VENDOR_ID_SUN, 0xabcd)},
84 {}
85};
86
87MODULE_DEVICE_TABLE(pci, niu_pci_tbl);
88
89#define NIU_TX_TIMEOUT (5 * HZ)
90
91#define nr64(reg) readq(np->regs + (reg))
92#define nw64(reg, val) writeq((val), np->regs + (reg))
93
94#define nr64_mac(reg) readq(np->mac_regs + (reg))
95#define nw64_mac(reg, val) writeq((val), np->mac_regs + (reg))
96
97#define nr64_ipp(reg) readq(np->regs + np->ipp_off + (reg))
98#define nw64_ipp(reg, val) writeq((val), np->regs + np->ipp_off + (reg))
99
100#define nr64_pcs(reg) readq(np->regs + np->pcs_off + (reg))
101#define nw64_pcs(reg, val) writeq((val), np->regs + np->pcs_off + (reg))
102
103#define nr64_xpcs(reg) readq(np->regs + np->xpcs_off + (reg))
104#define nw64_xpcs(reg, val) writeq((val), np->regs + np->xpcs_off + (reg))
105
106#define NIU_MSG_DEFAULT (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK)
107
108static int niu_debug;
109static int debug = -1;
110module_param(debug, int, 0);
111MODULE_PARM_DESC(debug, "NIU debug level");
112
113#define niu_lock_parent(np, flags) \
114 spin_lock_irqsave(&np->parent->lock, flags)
115#define niu_unlock_parent(np, flags) \
116 spin_unlock_irqrestore(&np->parent->lock, flags)
117
118static int serdes_init_10g_serdes(struct niu *np);
119
120static int __niu_wait_bits_clear_mac(struct niu *np, unsigned long reg,
121 u64 bits, int limit, int delay)
122{
123 while (--limit >= 0) {
124 u64 val = nr64_mac(reg);
125
126 if (!(val & bits))
127 break;
128 udelay(delay);
129 }
130 if (limit < 0)
131 return -ENODEV;
132 return 0;
133}
134
135static int __niu_set_and_wait_clear_mac(struct niu *np, unsigned long reg,
136 u64 bits, int limit, int delay,
137 const char *reg_name)
138{
139 int err;
140
141 nw64_mac(reg, bits);
142 err = __niu_wait_bits_clear_mac(np, reg, bits, limit, delay);
143 if (err)
144 netdev_err(np->dev, "bits (%llx) of register %s would not clear, val[%llx]\n",
145 (unsigned long long)bits, reg_name,
146 (unsigned long long)nr64_mac(reg));
147 return err;
148}
149
150#define niu_set_and_wait_clear_mac(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
151({ BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
152 __niu_set_and_wait_clear_mac(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
153})
154
155static int __niu_wait_bits_clear_ipp(struct niu *np, unsigned long reg,
156 u64 bits, int limit, int delay)
157{
158 while (--limit >= 0) {
159 u64 val = nr64_ipp(reg);
160
161 if (!(val & bits))
162 break;
163 udelay(delay);
164 }
165 if (limit < 0)
166 return -ENODEV;
167 return 0;
168}
169
170static int __niu_set_and_wait_clear_ipp(struct niu *np, unsigned long reg,
171 u64 bits, int limit, int delay,
172 const char *reg_name)
173{
174 int err;
175 u64 val;
176
177 val = nr64_ipp(reg);
178 val |= bits;
179 nw64_ipp(reg, val);
180
181 err = __niu_wait_bits_clear_ipp(np, reg, bits, limit, delay);
182 if (err)
183 netdev_err(np->dev, "bits (%llx) of register %s would not clear, val[%llx]\n",
184 (unsigned long long)bits, reg_name,
185 (unsigned long long)nr64_ipp(reg));
186 return err;
187}
188
189#define niu_set_and_wait_clear_ipp(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
190({ BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
191 __niu_set_and_wait_clear_ipp(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
192})
193
194static int __niu_wait_bits_clear(struct niu *np, unsigned long reg,
195 u64 bits, int limit, int delay)
196{
197 while (--limit >= 0) {
198 u64 val = nr64(reg);
199
200 if (!(val & bits))
201 break;
202 udelay(delay);
203 }
204 if (limit < 0)
205 return -ENODEV;
206 return 0;
207}
208
209#define niu_wait_bits_clear(NP, REG, BITS, LIMIT, DELAY) \
210({ BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
211 __niu_wait_bits_clear(NP, REG, BITS, LIMIT, DELAY); \
212})
213
214static int __niu_set_and_wait_clear(struct niu *np, unsigned long reg,
215 u64 bits, int limit, int delay,
216 const char *reg_name)
217{
218 int err;
219
220 nw64(reg, bits);
221 err = __niu_wait_bits_clear(np, reg, bits, limit, delay);
222 if (err)
223 netdev_err(np->dev, "bits (%llx) of register %s would not clear, val[%llx]\n",
224 (unsigned long long)bits, reg_name,
225 (unsigned long long)nr64(reg));
226 return err;
227}
228
229#define niu_set_and_wait_clear(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
230({ BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
231 __niu_set_and_wait_clear(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
232})
233
234static void niu_ldg_rearm(struct niu *np, struct niu_ldg *lp, int on)
235{
236 u64 val = (u64) lp->timer;
237
238 if (on)
239 val |= LDG_IMGMT_ARM;
240
241 nw64(LDG_IMGMT(lp->ldg_num), val);
242}
243
244static int niu_ldn_irq_enable(struct niu *np, int ldn, int on)
245{
246 unsigned long mask_reg, bits;
247 u64 val;
248
249 if (ldn < 0 || ldn > LDN_MAX)
250 return -EINVAL;
251
252 if (ldn < 64) {
253 mask_reg = LD_IM0(ldn);
254 bits = LD_IM0_MASK;
255 } else {
256 mask_reg = LD_IM1(ldn - 64);
257 bits = LD_IM1_MASK;
258 }
259
260 val = nr64(mask_reg);
261 if (on)
262 val &= ~bits;
263 else
264 val |= bits;
265 nw64(mask_reg, val);
266
267 return 0;
268}
269
270static int niu_enable_ldn_in_ldg(struct niu *np, struct niu_ldg *lp, int on)
271{
272 struct niu_parent *parent = np->parent;
273 int i;
274
275 for (i = 0; i <= LDN_MAX; i++) {
276 int err;
277
278 if (parent->ldg_map[i] != lp->ldg_num)
279 continue;
280
281 err = niu_ldn_irq_enable(np, i, on);
282 if (err)
283 return err;
284 }
285 return 0;
286}
287
288static int niu_enable_interrupts(struct niu *np, int on)
289{
290 int i;
291
292 for (i = 0; i < np->num_ldg; i++) {
293 struct niu_ldg *lp = &np->ldg[i];
294 int err;
295
296 err = niu_enable_ldn_in_ldg(np, lp, on);
297 if (err)
298 return err;
299 }
300 for (i = 0; i < np->num_ldg; i++)
301 niu_ldg_rearm(np, &np->ldg[i], on);
302
303 return 0;
304}
305
306static u32 phy_encode(u32 type, int port)
307{
308 return type << (port * 2);
309}
310
311static u32 phy_decode(u32 val, int port)
312{
313 return (val >> (port * 2)) & PORT_TYPE_MASK;
314}
315
316static int mdio_wait(struct niu *np)
317{
318 int limit = 1000;
319 u64 val;
320
321 while (--limit > 0) {
322 val = nr64(MIF_FRAME_OUTPUT);
323 if ((val >> MIF_FRAME_OUTPUT_TA_SHIFT) & 0x1)
324 return val & MIF_FRAME_OUTPUT_DATA;
325
326 udelay(10);
327 }
328
329 return -ENODEV;
330}
331
332static int mdio_read(struct niu *np, int port, int dev, int reg)
333{
334 int err;
335
336 nw64(MIF_FRAME_OUTPUT, MDIO_ADDR_OP(port, dev, reg));
337 err = mdio_wait(np);
338 if (err < 0)
339 return err;
340
341 nw64(MIF_FRAME_OUTPUT, MDIO_READ_OP(port, dev));
342 return mdio_wait(np);
343}
344
345static int mdio_write(struct niu *np, int port, int dev, int reg, int data)
346{
347 int err;
348
349 nw64(MIF_FRAME_OUTPUT, MDIO_ADDR_OP(port, dev, reg));
350 err = mdio_wait(np);
351 if (err < 0)
352 return err;
353
354 nw64(MIF_FRAME_OUTPUT, MDIO_WRITE_OP(port, dev, data));
355 err = mdio_wait(np);
356 if (err < 0)
357 return err;
358
359 return 0;
360}
361
362static int mii_read(struct niu *np, int port, int reg)
363{
364 nw64(MIF_FRAME_OUTPUT, MII_READ_OP(port, reg));
365 return mdio_wait(np);
366}
367
368static int mii_write(struct niu *np, int port, int reg, int data)
369{
370 int err;
371
372 nw64(MIF_FRAME_OUTPUT, MII_WRITE_OP(port, reg, data));
373 err = mdio_wait(np);
374 if (err < 0)
375 return err;
376
377 return 0;
378}
379
380static int esr2_set_tx_cfg(struct niu *np, unsigned long channel, u32 val)
381{
382 int err;
383
384 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
385 ESR2_TI_PLL_TX_CFG_L(channel),
386 val & 0xffff);
387 if (!err)
388 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
389 ESR2_TI_PLL_TX_CFG_H(channel),
390 val >> 16);
391 return err;
392}
393
394static int esr2_set_rx_cfg(struct niu *np, unsigned long channel, u32 val)
395{
396 int err;
397
398 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
399 ESR2_TI_PLL_RX_CFG_L(channel),
400 val & 0xffff);
401 if (!err)
402 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
403 ESR2_TI_PLL_RX_CFG_H(channel),
404 val >> 16);
405 return err;
406}
407
408/* Mode is always 10G fiber. */
409static int serdes_init_niu_10g_fiber(struct niu *np)
410{
411 struct niu_link_config *lp = &np->link_config;
412 u32 tx_cfg, rx_cfg;
413 unsigned long i;
414
415 tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV);
416 rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT |
417 PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH |
418 PLL_RX_CFG_EQ_LP_ADAPTIVE);
419
420 if (lp->loopback_mode == LOOPBACK_PHY) {
421 u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS;
422
423 mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
424 ESR2_TI_PLL_TEST_CFG_L, test_cfg);
425
426 tx_cfg |= PLL_TX_CFG_ENTEST;
427 rx_cfg |= PLL_RX_CFG_ENTEST;
428 }
429
430 /* Initialize all 4 lanes of the SERDES. */
431 for (i = 0; i < 4; i++) {
432 int err = esr2_set_tx_cfg(np, i, tx_cfg);
433 if (err)
434 return err;
435 }
436
437 for (i = 0; i < 4; i++) {
438 int err = esr2_set_rx_cfg(np, i, rx_cfg);
439 if (err)
440 return err;
441 }
442
443 return 0;
444}
445
446static int serdes_init_niu_1g_serdes(struct niu *np)
447{
448 struct niu_link_config *lp = &np->link_config;
449 u16 pll_cfg, pll_sts;
450 int max_retry = 100;
451 u64 sig, mask, val;
452 u32 tx_cfg, rx_cfg;
453 unsigned long i;
454 int err;
455
456 tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV |
457 PLL_TX_CFG_RATE_HALF);
458 rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT |
459 PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH |
460 PLL_RX_CFG_RATE_HALF);
461
462 if (np->port == 0)
463 rx_cfg |= PLL_RX_CFG_EQ_LP_ADAPTIVE;
464
465 if (lp->loopback_mode == LOOPBACK_PHY) {
466 u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS;
467
468 mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
469 ESR2_TI_PLL_TEST_CFG_L, test_cfg);
470
471 tx_cfg |= PLL_TX_CFG_ENTEST;
472 rx_cfg |= PLL_RX_CFG_ENTEST;
473 }
474
475 /* Initialize PLL for 1G */
476 pll_cfg = (PLL_CFG_ENPLL | PLL_CFG_MPY_8X);
477
478 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
479 ESR2_TI_PLL_CFG_L, pll_cfg);
480 if (err) {
481 netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_CFG_L failed\n",
482 np->port, __func__);
483 return err;
484 }
485
486 pll_sts = PLL_CFG_ENPLL;
487
488 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
489 ESR2_TI_PLL_STS_L, pll_sts);
490 if (err) {
491 netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_STS_L failed\n",
492 np->port, __func__);
493 return err;
494 }
495
496 udelay(200);
497
498 /* Initialize all 4 lanes of the SERDES. */
499 for (i = 0; i < 4; i++) {
500 err = esr2_set_tx_cfg(np, i, tx_cfg);
501 if (err)
502 return err;
503 }
504
505 for (i = 0; i < 4; i++) {
506 err = esr2_set_rx_cfg(np, i, rx_cfg);
507 if (err)
508 return err;
509 }
510
511 switch (np->port) {
512 case 0:
513 val = (ESR_INT_SRDY0_P0 | ESR_INT_DET0_P0);
514 mask = val;
515 break;
516
517 case 1:
518 val = (ESR_INT_SRDY0_P1 | ESR_INT_DET0_P1);
519 mask = val;
520 break;
521
522 default:
523 return -EINVAL;
524 }
525
526 while (max_retry--) {
527 sig = nr64(ESR_INT_SIGNALS);
528 if ((sig & mask) == val)
529 break;
530
531 mdelay(500);
532 }
533
534 if ((sig & mask) != val) {
535 netdev_err(np->dev, "Port %u signal bits [%08x] are not [%08x]\n",
536 np->port, (int)(sig & mask), (int)val);
537 return -ENODEV;
538 }
539
540 return 0;
541}
542
543static int serdes_init_niu_10g_serdes(struct niu *np)
544{
545 struct niu_link_config *lp = &np->link_config;
546 u32 tx_cfg, rx_cfg, pll_cfg, pll_sts;
547 int max_retry = 100;
548 u64 sig, mask, val;
549 unsigned long i;
550 int err;
551
552 tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV);
553 rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT |
554 PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH |
555 PLL_RX_CFG_EQ_LP_ADAPTIVE);
556
557 if (lp->loopback_mode == LOOPBACK_PHY) {
558 u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS;
559
560 mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
561 ESR2_TI_PLL_TEST_CFG_L, test_cfg);
562
563 tx_cfg |= PLL_TX_CFG_ENTEST;
564 rx_cfg |= PLL_RX_CFG_ENTEST;
565 }
566
567 /* Initialize PLL for 10G */
568 pll_cfg = (PLL_CFG_ENPLL | PLL_CFG_MPY_10X);
569
570 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
571 ESR2_TI_PLL_CFG_L, pll_cfg & 0xffff);
572 if (err) {
573 netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_CFG_L failed\n",
574 np->port, __func__);
575 return err;
576 }
577
578 pll_sts = PLL_CFG_ENPLL;
579
580 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
581 ESR2_TI_PLL_STS_L, pll_sts & 0xffff);
582 if (err) {
583 netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_STS_L failed\n",
584 np->port, __func__);
585 return err;
586 }
587
588 udelay(200);
589
590 /* Initialize all 4 lanes of the SERDES. */
591 for (i = 0; i < 4; i++) {
592 err = esr2_set_tx_cfg(np, i, tx_cfg);
593 if (err)
594 return err;
595 }
596
597 for (i = 0; i < 4; i++) {
598 err = esr2_set_rx_cfg(np, i, rx_cfg);
599 if (err)
600 return err;
601 }
602
603 /* check if serdes is ready */
604
605 switch (np->port) {
606 case 0:
607 mask = ESR_INT_SIGNALS_P0_BITS;
608 val = (ESR_INT_SRDY0_P0 |
609 ESR_INT_DET0_P0 |
610 ESR_INT_XSRDY_P0 |
611 ESR_INT_XDP_P0_CH3 |
612 ESR_INT_XDP_P0_CH2 |
613 ESR_INT_XDP_P0_CH1 |
614 ESR_INT_XDP_P0_CH0);
615 break;
616
617 case 1:
618 mask = ESR_INT_SIGNALS_P1_BITS;
619 val = (ESR_INT_SRDY0_P1 |
620 ESR_INT_DET0_P1 |
621 ESR_INT_XSRDY_P1 |
622 ESR_INT_XDP_P1_CH3 |
623 ESR_INT_XDP_P1_CH2 |
624 ESR_INT_XDP_P1_CH1 |
625 ESR_INT_XDP_P1_CH0);
626 break;
627
628 default:
629 return -EINVAL;
630 }
631
632 while (max_retry--) {
633 sig = nr64(ESR_INT_SIGNALS);
634 if ((sig & mask) == val)
635 break;
636
637 mdelay(500);
638 }
639
640 if ((sig & mask) != val) {
641 pr_info("NIU Port %u signal bits [%08x] are not [%08x] for 10G...trying 1G\n",
642 np->port, (int)(sig & mask), (int)val);
643
644 /* 10G failed, try initializing at 1G */
645 err = serdes_init_niu_1g_serdes(np);
646 if (!err) {
647 np->flags &= ~NIU_FLAGS_10G;
648 np->mac_xcvr = MAC_XCVR_PCS;
649 } else {
650 netdev_err(np->dev, "Port %u 10G/1G SERDES Link Failed\n",
651 np->port);
652 return -ENODEV;
653 }
654 }
655 return 0;
656}
657
658static int esr_read_rxtx_ctrl(struct niu *np, unsigned long chan, u32 *val)
659{
660 int err;
661
662 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR, ESR_RXTX_CTRL_L(chan));
663 if (err >= 0) {
664 *val = (err & 0xffff);
665 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
666 ESR_RXTX_CTRL_H(chan));
667 if (err >= 0)
668 *val |= ((err & 0xffff) << 16);
669 err = 0;
670 }
671 return err;
672}
673
674static int esr_read_glue0(struct niu *np, unsigned long chan, u32 *val)
675{
676 int err;
677
678 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
679 ESR_GLUE_CTRL0_L(chan));
680 if (err >= 0) {
681 *val = (err & 0xffff);
682 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
683 ESR_GLUE_CTRL0_H(chan));
684 if (err >= 0) {
685 *val |= ((err & 0xffff) << 16);
686 err = 0;
687 }
688 }
689 return err;
690}
691
692static int esr_read_reset(struct niu *np, u32 *val)
693{
694 int err;
695
696 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
697 ESR_RXTX_RESET_CTRL_L);
698 if (err >= 0) {
699 *val = (err & 0xffff);
700 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
701 ESR_RXTX_RESET_CTRL_H);
702 if (err >= 0) {
703 *val |= ((err & 0xffff) << 16);
704 err = 0;
705 }
706 }
707 return err;
708}
709
710static int esr_write_rxtx_ctrl(struct niu *np, unsigned long chan, u32 val)
711{
712 int err;
713
714 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
715 ESR_RXTX_CTRL_L(chan), val & 0xffff);
716 if (!err)
717 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
718 ESR_RXTX_CTRL_H(chan), (val >> 16));
719 return err;
720}
721
722static int esr_write_glue0(struct niu *np, unsigned long chan, u32 val)
723{
724 int err;
725
726 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
727 ESR_GLUE_CTRL0_L(chan), val & 0xffff);
728 if (!err)
729 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
730 ESR_GLUE_CTRL0_H(chan), (val >> 16));
731 return err;
732}
733
734static int esr_reset(struct niu *np)
735{
736 u32 reset;
737 int err;
738
739 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
740 ESR_RXTX_RESET_CTRL_L, 0x0000);
741 if (err)
742 return err;
743 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
744 ESR_RXTX_RESET_CTRL_H, 0xffff);
745 if (err)
746 return err;
747 udelay(200);
748
749 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
750 ESR_RXTX_RESET_CTRL_L, 0xffff);
751 if (err)
752 return err;
753 udelay(200);
754
755 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
756 ESR_RXTX_RESET_CTRL_H, 0x0000);
757 if (err)
758 return err;
759 udelay(200);
760
761 err = esr_read_reset(np, &reset);
762 if (err)
763 return err;
764 if (reset != 0) {
765 netdev_err(np->dev, "Port %u ESR_RESET did not clear [%08x]\n",
766 np->port, reset);
767 return -ENODEV;
768 }
769
770 return 0;
771}
772
773static int serdes_init_10g(struct niu *np)
774{
775 struct niu_link_config *lp = &np->link_config;
776 unsigned long ctrl_reg, test_cfg_reg, i;
777 u64 ctrl_val, test_cfg_val, sig, mask, val;
778 int err;
779
780 switch (np->port) {
781 case 0:
782 ctrl_reg = ENET_SERDES_0_CTRL_CFG;
783 test_cfg_reg = ENET_SERDES_0_TEST_CFG;
784 break;
785 case 1:
786 ctrl_reg = ENET_SERDES_1_CTRL_CFG;
787 test_cfg_reg = ENET_SERDES_1_TEST_CFG;
788 break;
789
790 default:
791 return -EINVAL;
792 }
793 ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
794 ENET_SERDES_CTRL_SDET_1 |
795 ENET_SERDES_CTRL_SDET_2 |
796 ENET_SERDES_CTRL_SDET_3 |
797 (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
798 (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
799 (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
800 (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
801 (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
802 (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
803 (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
804 (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
805 test_cfg_val = 0;
806
807 if (lp->loopback_mode == LOOPBACK_PHY) {
808 test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
809 ENET_SERDES_TEST_MD_0_SHIFT) |
810 (ENET_TEST_MD_PAD_LOOPBACK <<
811 ENET_SERDES_TEST_MD_1_SHIFT) |
812 (ENET_TEST_MD_PAD_LOOPBACK <<
813 ENET_SERDES_TEST_MD_2_SHIFT) |
814 (ENET_TEST_MD_PAD_LOOPBACK <<
815 ENET_SERDES_TEST_MD_3_SHIFT));
816 }
817
818 nw64(ctrl_reg, ctrl_val);
819 nw64(test_cfg_reg, test_cfg_val);
820
821 /* Initialize all 4 lanes of the SERDES. */
822 for (i = 0; i < 4; i++) {
823 u32 rxtx_ctrl, glue0;
824
825 err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
826 if (err)
827 return err;
828 err = esr_read_glue0(np, i, &glue0);
829 if (err)
830 return err;
831
832 rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
833 rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
834 (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
835
836 glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
837 ESR_GLUE_CTRL0_THCNT |
838 ESR_GLUE_CTRL0_BLTIME);
839 glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
840 (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
841 (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
842 (BLTIME_300_CYCLES <<
843 ESR_GLUE_CTRL0_BLTIME_SHIFT));
844
845 err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
846 if (err)
847 return err;
848 err = esr_write_glue0(np, i, glue0);
849 if (err)
850 return err;
851 }
852
853 err = esr_reset(np);
854 if (err)
855 return err;
856
857 sig = nr64(ESR_INT_SIGNALS);
858 switch (np->port) {
859 case 0:
860 mask = ESR_INT_SIGNALS_P0_BITS;
861 val = (ESR_INT_SRDY0_P0 |
862 ESR_INT_DET0_P0 |
863 ESR_INT_XSRDY_P0 |
864 ESR_INT_XDP_P0_CH3 |
865 ESR_INT_XDP_P0_CH2 |
866 ESR_INT_XDP_P0_CH1 |
867 ESR_INT_XDP_P0_CH0);
868 break;
869
870 case 1:
871 mask = ESR_INT_SIGNALS_P1_BITS;
872 val = (ESR_INT_SRDY0_P1 |
873 ESR_INT_DET0_P1 |
874 ESR_INT_XSRDY_P1 |
875 ESR_INT_XDP_P1_CH3 |
876 ESR_INT_XDP_P1_CH2 |
877 ESR_INT_XDP_P1_CH1 |
878 ESR_INT_XDP_P1_CH0);
879 break;
880
881 default:
882 return -EINVAL;
883 }
884
885 if ((sig & mask) != val) {
886 if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
887 np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
888 return 0;
889 }
890 netdev_err(np->dev, "Port %u signal bits [%08x] are not [%08x]\n",
891 np->port, (int)(sig & mask), (int)val);
892 return -ENODEV;
893 }
894 if (np->flags & NIU_FLAGS_HOTPLUG_PHY)
895 np->flags |= NIU_FLAGS_HOTPLUG_PHY_PRESENT;
896 return 0;
897}
898
899static int serdes_init_1g(struct niu *np)
900{
901 u64 val;
902
903 val = nr64(ENET_SERDES_1_PLL_CFG);
904 val &= ~ENET_SERDES_PLL_FBDIV2;
905 switch (np->port) {
906 case 0:
907 val |= ENET_SERDES_PLL_HRATE0;
908 break;
909 case 1:
910 val |= ENET_SERDES_PLL_HRATE1;
911 break;
912 case 2:
913 val |= ENET_SERDES_PLL_HRATE2;
914 break;
915 case 3:
916 val |= ENET_SERDES_PLL_HRATE3;
917 break;
918 default:
919 return -EINVAL;
920 }
921 nw64(ENET_SERDES_1_PLL_CFG, val);
922
923 return 0;
924}
925
926static int serdes_init_1g_serdes(struct niu *np)
927{
928 struct niu_link_config *lp = &np->link_config;
929 unsigned long ctrl_reg, test_cfg_reg, pll_cfg, i;
930 u64 ctrl_val, test_cfg_val, sig, mask, val;
931 int err;
932 u64 reset_val, val_rd;
933
934 val = ENET_SERDES_PLL_HRATE0 | ENET_SERDES_PLL_HRATE1 |
935 ENET_SERDES_PLL_HRATE2 | ENET_SERDES_PLL_HRATE3 |
936 ENET_SERDES_PLL_FBDIV0;
937 switch (np->port) {
938 case 0:
939 reset_val = ENET_SERDES_RESET_0;
940 ctrl_reg = ENET_SERDES_0_CTRL_CFG;
941 test_cfg_reg = ENET_SERDES_0_TEST_CFG;
942 pll_cfg = ENET_SERDES_0_PLL_CFG;
943 break;
944 case 1:
945 reset_val = ENET_SERDES_RESET_1;
946 ctrl_reg = ENET_SERDES_1_CTRL_CFG;
947 test_cfg_reg = ENET_SERDES_1_TEST_CFG;
948 pll_cfg = ENET_SERDES_1_PLL_CFG;
949 break;
950
951 default:
952 return -EINVAL;
953 }
954 ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
955 ENET_SERDES_CTRL_SDET_1 |
956 ENET_SERDES_CTRL_SDET_2 |
957 ENET_SERDES_CTRL_SDET_3 |
958 (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
959 (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
960 (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
961 (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
962 (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
963 (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
964 (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
965 (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
966 test_cfg_val = 0;
967
968 if (lp->loopback_mode == LOOPBACK_PHY) {
969 test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
970 ENET_SERDES_TEST_MD_0_SHIFT) |
971 (ENET_TEST_MD_PAD_LOOPBACK <<
972 ENET_SERDES_TEST_MD_1_SHIFT) |
973 (ENET_TEST_MD_PAD_LOOPBACK <<
974 ENET_SERDES_TEST_MD_2_SHIFT) |
975 (ENET_TEST_MD_PAD_LOOPBACK <<
976 ENET_SERDES_TEST_MD_3_SHIFT));
977 }
978
979 nw64(ENET_SERDES_RESET, reset_val);
980 mdelay(20);
981 val_rd = nr64(ENET_SERDES_RESET);
982 val_rd &= ~reset_val;
983 nw64(pll_cfg, val);
984 nw64(ctrl_reg, ctrl_val);
985 nw64(test_cfg_reg, test_cfg_val);
986 nw64(ENET_SERDES_RESET, val_rd);
987 mdelay(2000);
988
989 /* Initialize all 4 lanes of the SERDES. */
990 for (i = 0; i < 4; i++) {
991 u32 rxtx_ctrl, glue0;
992
993 err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
994 if (err)
995 return err;
996 err = esr_read_glue0(np, i, &glue0);
997 if (err)
998 return err;
999
1000 rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
1001 rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
1002 (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
1003
1004 glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
1005 ESR_GLUE_CTRL0_THCNT |
1006 ESR_GLUE_CTRL0_BLTIME);
1007 glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
1008 (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
1009 (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
1010 (BLTIME_300_CYCLES <<
1011 ESR_GLUE_CTRL0_BLTIME_SHIFT));
1012
1013 err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
1014 if (err)
1015 return err;
1016 err = esr_write_glue0(np, i, glue0);
1017 if (err)
1018 return err;
1019 }
1020
1021
1022 sig = nr64(ESR_INT_SIGNALS);
1023 switch (np->port) {
1024 case 0:
1025 val = (ESR_INT_SRDY0_P0 | ESR_INT_DET0_P0);
1026 mask = val;
1027 break;
1028
1029 case 1:
1030 val = (ESR_INT_SRDY0_P1 | ESR_INT_DET0_P1);
1031 mask = val;
1032 break;
1033
1034 default:
1035 return -EINVAL;
1036 }
1037
1038 if ((sig & mask) != val) {
1039 netdev_err(np->dev, "Port %u signal bits [%08x] are not [%08x]\n",
1040 np->port, (int)(sig & mask), (int)val);
1041 return -ENODEV;
1042 }
1043
1044 return 0;
1045}
1046
1047static int link_status_1g_serdes(struct niu *np, int *link_up_p)
1048{
1049 struct niu_link_config *lp = &np->link_config;
1050 int link_up;
1051 u64 val;
1052 u16 current_speed;
1053 unsigned long flags;
1054 u8 current_duplex;
1055
1056 link_up = 0;
1057 current_speed = SPEED_INVALID;
1058 current_duplex = DUPLEX_INVALID;
1059
1060 spin_lock_irqsave(&np->lock, flags);
1061
1062 val = nr64_pcs(PCS_MII_STAT);
1063
1064 if (val & PCS_MII_STAT_LINK_STATUS) {
1065 link_up = 1;
1066 current_speed = SPEED_1000;
1067 current_duplex = DUPLEX_FULL;
1068 }
1069
1070 lp->active_speed = current_speed;
1071 lp->active_duplex = current_duplex;
1072 spin_unlock_irqrestore(&np->lock, flags);
1073
1074 *link_up_p = link_up;
1075 return 0;
1076}
1077
1078static int link_status_10g_serdes(struct niu *np, int *link_up_p)
1079{
1080 unsigned long flags;
1081 struct niu_link_config *lp = &np->link_config;
1082 int link_up = 0;
1083 int link_ok = 1;
1084 u64 val, val2;
1085 u16 current_speed;
1086 u8 current_duplex;
1087
1088 if (!(np->flags & NIU_FLAGS_10G))
1089 return link_status_1g_serdes(np, link_up_p);
1090
1091 current_speed = SPEED_INVALID;
1092 current_duplex = DUPLEX_INVALID;
1093 spin_lock_irqsave(&np->lock, flags);
1094
1095 val = nr64_xpcs(XPCS_STATUS(0));
1096 val2 = nr64_mac(XMAC_INTER2);
1097 if (val2 & 0x01000000)
1098 link_ok = 0;
1099
1100 if ((val & 0x1000ULL) && link_ok) {
1101 link_up = 1;
1102 current_speed = SPEED_10000;
1103 current_duplex = DUPLEX_FULL;
1104 }
1105 lp->active_speed = current_speed;
1106 lp->active_duplex = current_duplex;
1107 spin_unlock_irqrestore(&np->lock, flags);
1108 *link_up_p = link_up;
1109 return 0;
1110}
1111
1112static int link_status_mii(struct niu *np, int *link_up_p)
1113{
1114 struct niu_link_config *lp = &np->link_config;
1115 int err;
1116 int bmsr, advert, ctrl1000, stat1000, lpa, bmcr, estatus;
1117 int supported, advertising, active_speed, active_duplex;
1118
1119 err = mii_read(np, np->phy_addr, MII_BMCR);
1120 if (unlikely(err < 0))
1121 return err;
1122 bmcr = err;
1123
1124 err = mii_read(np, np->phy_addr, MII_BMSR);
1125 if (unlikely(err < 0))
1126 return err;
1127 bmsr = err;
1128
1129 err = mii_read(np, np->phy_addr, MII_ADVERTISE);
1130 if (unlikely(err < 0))
1131 return err;
1132 advert = err;
1133
1134 err = mii_read(np, np->phy_addr, MII_LPA);
1135 if (unlikely(err < 0))
1136 return err;
1137 lpa = err;
1138
1139 if (likely(bmsr & BMSR_ESTATEN)) {
1140 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1141 if (unlikely(err < 0))
1142 return err;
1143 estatus = err;
1144
1145 err = mii_read(np, np->phy_addr, MII_CTRL1000);
1146 if (unlikely(err < 0))
1147 return err;
1148 ctrl1000 = err;
1149
1150 err = mii_read(np, np->phy_addr, MII_STAT1000);
1151 if (unlikely(err < 0))
1152 return err;
1153 stat1000 = err;
1154 } else
1155 estatus = ctrl1000 = stat1000 = 0;
1156
1157 supported = 0;
1158 if (bmsr & BMSR_ANEGCAPABLE)
1159 supported |= SUPPORTED_Autoneg;
1160 if (bmsr & BMSR_10HALF)
1161 supported |= SUPPORTED_10baseT_Half;
1162 if (bmsr & BMSR_10FULL)
1163 supported |= SUPPORTED_10baseT_Full;
1164 if (bmsr & BMSR_100HALF)
1165 supported |= SUPPORTED_100baseT_Half;
1166 if (bmsr & BMSR_100FULL)
1167 supported |= SUPPORTED_100baseT_Full;
1168 if (estatus & ESTATUS_1000_THALF)
1169 supported |= SUPPORTED_1000baseT_Half;
1170 if (estatus & ESTATUS_1000_TFULL)
1171 supported |= SUPPORTED_1000baseT_Full;
1172 lp->supported = supported;
1173
1174 advertising = mii_adv_to_ethtool_adv_t(advert);
1175 advertising |= mii_ctrl1000_to_ethtool_adv_t(ctrl1000);
1176
1177 if (bmcr & BMCR_ANENABLE) {
1178 int neg, neg1000;
1179
1180 lp->active_autoneg = 1;
1181 advertising |= ADVERTISED_Autoneg;
1182
1183 neg = advert & lpa;
1184 neg1000 = (ctrl1000 << 2) & stat1000;
1185
1186 if (neg1000 & (LPA_1000FULL | LPA_1000HALF))
1187 active_speed = SPEED_1000;
1188 else if (neg & LPA_100)
1189 active_speed = SPEED_100;
1190 else if (neg & (LPA_10HALF | LPA_10FULL))
1191 active_speed = SPEED_10;
1192 else
1193 active_speed = SPEED_INVALID;
1194
1195 if ((neg1000 & LPA_1000FULL) || (neg & LPA_DUPLEX))
1196 active_duplex = DUPLEX_FULL;
1197 else if (active_speed != SPEED_INVALID)
1198 active_duplex = DUPLEX_HALF;
1199 else
1200 active_duplex = DUPLEX_INVALID;
1201 } else {
1202 lp->active_autoneg = 0;
1203
1204 if ((bmcr & BMCR_SPEED1000) && !(bmcr & BMCR_SPEED100))
1205 active_speed = SPEED_1000;
1206 else if (bmcr & BMCR_SPEED100)
1207 active_speed = SPEED_100;
1208 else
1209 active_speed = SPEED_10;
1210
1211 if (bmcr & BMCR_FULLDPLX)
1212 active_duplex = DUPLEX_FULL;
1213 else
1214 active_duplex = DUPLEX_HALF;
1215 }
1216
1217 lp->active_advertising = advertising;
1218 lp->active_speed = active_speed;
1219 lp->active_duplex = active_duplex;
1220 *link_up_p = !!(bmsr & BMSR_LSTATUS);
1221
1222 return 0;
1223}
1224
1225static int link_status_1g_rgmii(struct niu *np, int *link_up_p)
1226{
1227 struct niu_link_config *lp = &np->link_config;
1228 u16 current_speed, bmsr;
1229 unsigned long flags;
1230 u8 current_duplex;
1231 int err, link_up;
1232
1233 link_up = 0;
1234 current_speed = SPEED_INVALID;
1235 current_duplex = DUPLEX_INVALID;
1236
1237 spin_lock_irqsave(&np->lock, flags);
1238
1239 err = mii_read(np, np->phy_addr, MII_BMSR);
1240 if (err < 0)
1241 goto out;
1242
1243 bmsr = err;
1244 if (bmsr & BMSR_LSTATUS) {
1245 link_up = 1;
1246 current_speed = SPEED_1000;
1247 current_duplex = DUPLEX_FULL;
1248 }
1249 lp->active_speed = current_speed;
1250 lp->active_duplex = current_duplex;
1251 err = 0;
1252
1253out:
1254 spin_unlock_irqrestore(&np->lock, flags);
1255
1256 *link_up_p = link_up;
1257 return err;
1258}
1259
1260static int link_status_1g(struct niu *np, int *link_up_p)
1261{
1262 struct niu_link_config *lp = &np->link_config;
1263 unsigned long flags;
1264 int err;
1265
1266 spin_lock_irqsave(&np->lock, flags);
1267
1268 err = link_status_mii(np, link_up_p);
1269 lp->supported |= SUPPORTED_TP;
1270 lp->active_advertising |= ADVERTISED_TP;
1271
1272 spin_unlock_irqrestore(&np->lock, flags);
1273 return err;
1274}
1275
1276static int bcm8704_reset(struct niu *np)
1277{
1278 int err, limit;
1279
1280 err = mdio_read(np, np->phy_addr,
1281 BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
1282 if (err < 0 || err == 0xffff)
1283 return err;
1284 err |= BMCR_RESET;
1285 err = mdio_write(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
1286 MII_BMCR, err);
1287 if (err)
1288 return err;
1289
1290 limit = 1000;
1291 while (--limit >= 0) {
1292 err = mdio_read(np, np->phy_addr,
1293 BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
1294 if (err < 0)
1295 return err;
1296 if (!(err & BMCR_RESET))
1297 break;
1298 }
1299 if (limit < 0) {
1300 netdev_err(np->dev, "Port %u PHY will not reset (bmcr=%04x)\n",
1301 np->port, (err & 0xffff));
1302 return -ENODEV;
1303 }
1304 return 0;
1305}
1306
1307/* When written, certain PHY registers need to be read back twice
1308 * in order for the bits to settle properly.
1309 */
1310static int bcm8704_user_dev3_readback(struct niu *np, int reg)
1311{
1312 int err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg);
1313 if (err < 0)
1314 return err;
1315 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg);
1316 if (err < 0)
1317 return err;
1318 return 0;
1319}
1320
1321static int bcm8706_init_user_dev3(struct niu *np)
1322{
1323 int err;
1324
1325
1326 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1327 BCM8704_USER_OPT_DIGITAL_CTRL);
1328 if (err < 0)
1329 return err;
1330 err &= ~USER_ODIG_CTRL_GPIOS;
1331 err |= (0x3 << USER_ODIG_CTRL_GPIOS_SHIFT);
1332 err |= USER_ODIG_CTRL_RESV2;
1333 err = mdio_write(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1334 BCM8704_USER_OPT_DIGITAL_CTRL, err);
1335 if (err)
1336 return err;
1337
1338 mdelay(1000);
1339
1340 return 0;
1341}
1342
1343static int bcm8704_init_user_dev3(struct niu *np)
1344{
1345 int err;
1346
1347 err = mdio_write(np, np->phy_addr,
1348 BCM8704_USER_DEV3_ADDR, BCM8704_USER_CONTROL,
1349 (USER_CONTROL_OPTXRST_LVL |
1350 USER_CONTROL_OPBIASFLT_LVL |
1351 USER_CONTROL_OBTMPFLT_LVL |
1352 USER_CONTROL_OPPRFLT_LVL |
1353 USER_CONTROL_OPTXFLT_LVL |
1354 USER_CONTROL_OPRXLOS_LVL |
1355 USER_CONTROL_OPRXFLT_LVL |
1356 USER_CONTROL_OPTXON_LVL |
1357 (0x3f << USER_CONTROL_RES1_SHIFT)));
1358 if (err)
1359 return err;
1360
1361 err = mdio_write(np, np->phy_addr,
1362 BCM8704_USER_DEV3_ADDR, BCM8704_USER_PMD_TX_CONTROL,
1363 (USER_PMD_TX_CTL_XFP_CLKEN |
1364 (1 << USER_PMD_TX_CTL_TX_DAC_TXD_SH) |
1365 (2 << USER_PMD_TX_CTL_TX_DAC_TXCK_SH) |
1366 USER_PMD_TX_CTL_TSCK_LPWREN));
1367 if (err)
1368 return err;
1369
1370 err = bcm8704_user_dev3_readback(np, BCM8704_USER_CONTROL);
1371 if (err)
1372 return err;
1373 err = bcm8704_user_dev3_readback(np, BCM8704_USER_PMD_TX_CONTROL);
1374 if (err)
1375 return err;
1376
1377 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1378 BCM8704_USER_OPT_DIGITAL_CTRL);
1379 if (err < 0)
1380 return err;
1381 err &= ~USER_ODIG_CTRL_GPIOS;
1382 err |= (0x3 << USER_ODIG_CTRL_GPIOS_SHIFT);
1383 err = mdio_write(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1384 BCM8704_USER_OPT_DIGITAL_CTRL, err);
1385 if (err)
1386 return err;
1387
1388 mdelay(1000);
1389
1390 return 0;
1391}
1392
1393static int mrvl88x2011_act_led(struct niu *np, int val)
1394{
1395 int err;
1396
1397 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1398 MRVL88X2011_LED_8_TO_11_CTL);
1399 if (err < 0)
1400 return err;
1401
1402 err &= ~MRVL88X2011_LED(MRVL88X2011_LED_ACT,MRVL88X2011_LED_CTL_MASK);
1403 err |= MRVL88X2011_LED(MRVL88X2011_LED_ACT,val);
1404
1405 return mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1406 MRVL88X2011_LED_8_TO_11_CTL, err);
1407}
1408
1409static int mrvl88x2011_led_blink_rate(struct niu *np, int rate)
1410{
1411 int err;
1412
1413 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1414 MRVL88X2011_LED_BLINK_CTL);
1415 if (err >= 0) {
1416 err &= ~MRVL88X2011_LED_BLKRATE_MASK;
1417 err |= (rate << 4);
1418
1419 err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1420 MRVL88X2011_LED_BLINK_CTL, err);
1421 }
1422
1423 return err;
1424}
1425
1426static int xcvr_init_10g_mrvl88x2011(struct niu *np)
1427{
1428 int err;
1429
1430 /* Set LED functions */
1431 err = mrvl88x2011_led_blink_rate(np, MRVL88X2011_LED_BLKRATE_134MS);
1432 if (err)
1433 return err;
1434
1435 /* led activity */
1436 err = mrvl88x2011_act_led(np, MRVL88X2011_LED_CTL_OFF);
1437 if (err)
1438 return err;
1439
1440 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1441 MRVL88X2011_GENERAL_CTL);
1442 if (err < 0)
1443 return err;
1444
1445 err |= MRVL88X2011_ENA_XFPREFCLK;
1446
1447 err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1448 MRVL88X2011_GENERAL_CTL, err);
1449 if (err < 0)
1450 return err;
1451
1452 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1453 MRVL88X2011_PMA_PMD_CTL_1);
1454 if (err < 0)
1455 return err;
1456
1457 if (np->link_config.loopback_mode == LOOPBACK_MAC)
1458 err |= MRVL88X2011_LOOPBACK;
1459 else
1460 err &= ~MRVL88X2011_LOOPBACK;
1461
1462 err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1463 MRVL88X2011_PMA_PMD_CTL_1, err);
1464 if (err < 0)
1465 return err;
1466
1467 /* Enable PMD */
1468 return mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1469 MRVL88X2011_10G_PMD_TX_DIS, MRVL88X2011_ENA_PMDTX);
1470}
1471
1472
1473static int xcvr_diag_bcm870x(struct niu *np)
1474{
1475 u16 analog_stat0, tx_alarm_status;
1476 int err = 0;
1477
1478#if 1
1479 err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
1480 MII_STAT1000);
1481 if (err < 0)
1482 return err;
1483 pr_info("Port %u PMA_PMD(MII_STAT1000) [%04x]\n", np->port, err);
1484
1485 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, 0x20);
1486 if (err < 0)
1487 return err;
1488 pr_info("Port %u USER_DEV3(0x20) [%04x]\n", np->port, err);
1489
1490 err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
1491 MII_NWAYTEST);
1492 if (err < 0)
1493 return err;
1494 pr_info("Port %u PHYXS(MII_NWAYTEST) [%04x]\n", np->port, err);
1495#endif
1496
1497 /* XXX dig this out it might not be so useful XXX */
1498 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1499 BCM8704_USER_ANALOG_STATUS0);
1500 if (err < 0)
1501 return err;
1502 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1503 BCM8704_USER_ANALOG_STATUS0);
1504 if (err < 0)
1505 return err;
1506 analog_stat0 = err;
1507
1508 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1509 BCM8704_USER_TX_ALARM_STATUS);
1510 if (err < 0)
1511 return err;
1512 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1513 BCM8704_USER_TX_ALARM_STATUS);
1514 if (err < 0)
1515 return err;
1516 tx_alarm_status = err;
1517
1518 if (analog_stat0 != 0x03fc) {
1519 if ((analog_stat0 == 0x43bc) && (tx_alarm_status != 0)) {
1520 pr_info("Port %u cable not connected or bad cable\n",
1521 np->port);
1522 } else if (analog_stat0 == 0x639c) {
1523 pr_info("Port %u optical module is bad or missing\n",
1524 np->port);
1525 }
1526 }
1527
1528 return 0;
1529}
1530
1531static int xcvr_10g_set_lb_bcm870x(struct niu *np)
1532{
1533 struct niu_link_config *lp = &np->link_config;
1534 int err;
1535
1536 err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
1537 MII_BMCR);
1538 if (err < 0)
1539 return err;
1540
1541 err &= ~BMCR_LOOPBACK;
1542
1543 if (lp->loopback_mode == LOOPBACK_MAC)
1544 err |= BMCR_LOOPBACK;
1545
1546 err = mdio_write(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
1547 MII_BMCR, err);
1548 if (err)
1549 return err;
1550
1551 return 0;
1552}
1553
1554static int xcvr_init_10g_bcm8706(struct niu *np)
1555{
1556 int err = 0;
1557 u64 val;
1558
1559 if ((np->flags & NIU_FLAGS_HOTPLUG_PHY) &&
1560 (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) == 0)
1561 return err;
1562
1563 val = nr64_mac(XMAC_CONFIG);
1564 val &= ~XMAC_CONFIG_LED_POLARITY;
1565 val |= XMAC_CONFIG_FORCE_LED_ON;
1566 nw64_mac(XMAC_CONFIG, val);
1567
1568 val = nr64(MIF_CONFIG);
1569 val |= MIF_CONFIG_INDIRECT_MODE;
1570 nw64(MIF_CONFIG, val);
1571
1572 err = bcm8704_reset(np);
1573 if (err)
1574 return err;
1575
1576 err = xcvr_10g_set_lb_bcm870x(np);
1577 if (err)
1578 return err;
1579
1580 err = bcm8706_init_user_dev3(np);
1581 if (err)
1582 return err;
1583
1584 err = xcvr_diag_bcm870x(np);
1585 if (err)
1586 return err;
1587
1588 return 0;
1589}
1590
1591static int xcvr_init_10g_bcm8704(struct niu *np)
1592{
1593 int err;
1594
1595 err = bcm8704_reset(np);
1596 if (err)
1597 return err;
1598
1599 err = bcm8704_init_user_dev3(np);
1600 if (err)
1601 return err;
1602
1603 err = xcvr_10g_set_lb_bcm870x(np);
1604 if (err)
1605 return err;
1606
1607 err = xcvr_diag_bcm870x(np);
1608 if (err)
1609 return err;
1610
1611 return 0;
1612}
1613
1614static int xcvr_init_10g(struct niu *np)
1615{
1616 int phy_id, err;
1617 u64 val;
1618
1619 val = nr64_mac(XMAC_CONFIG);
1620 val &= ~XMAC_CONFIG_LED_POLARITY;
1621 val |= XMAC_CONFIG_FORCE_LED_ON;
1622 nw64_mac(XMAC_CONFIG, val);
1623
1624 /* XXX shared resource, lock parent XXX */
1625 val = nr64(MIF_CONFIG);
1626 val |= MIF_CONFIG_INDIRECT_MODE;
1627 nw64(MIF_CONFIG, val);
1628
1629 phy_id = phy_decode(np->parent->port_phy, np->port);
1630 phy_id = np->parent->phy_probe_info.phy_id[phy_id][np->port];
1631
1632 /* handle different phy types */
1633 switch (phy_id & NIU_PHY_ID_MASK) {
1634 case NIU_PHY_ID_MRVL88X2011:
1635 err = xcvr_init_10g_mrvl88x2011(np);
1636 break;
1637
1638 default: /* bcom 8704 */
1639 err = xcvr_init_10g_bcm8704(np);
1640 break;
1641 }
1642
1643 return err;
1644}
1645
1646static int mii_reset(struct niu *np)
1647{
1648 int limit, err;
1649
1650 err = mii_write(np, np->phy_addr, MII_BMCR, BMCR_RESET);
1651 if (err)
1652 return err;
1653
1654 limit = 1000;
1655 while (--limit >= 0) {
1656 udelay(500);
1657 err = mii_read(np, np->phy_addr, MII_BMCR);
1658 if (err < 0)
1659 return err;
1660 if (!(err & BMCR_RESET))
1661 break;
1662 }
1663 if (limit < 0) {
1664 netdev_err(np->dev, "Port %u MII would not reset, bmcr[%04x]\n",
1665 np->port, err);
1666 return -ENODEV;
1667 }
1668
1669 return 0;
1670}
1671
1672static int xcvr_init_1g_rgmii(struct niu *np)
1673{
1674 int err;
1675 u64 val;
1676 u16 bmcr, bmsr, estat;
1677
1678 val = nr64(MIF_CONFIG);
1679 val &= ~MIF_CONFIG_INDIRECT_MODE;
1680 nw64(MIF_CONFIG, val);
1681
1682 err = mii_reset(np);
1683 if (err)
1684 return err;
1685
1686 err = mii_read(np, np->phy_addr, MII_BMSR);
1687 if (err < 0)
1688 return err;
1689 bmsr = err;
1690
1691 estat = 0;
1692 if (bmsr & BMSR_ESTATEN) {
1693 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1694 if (err < 0)
1695 return err;
1696 estat = err;
1697 }
1698
1699 bmcr = 0;
1700 err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1701 if (err)
1702 return err;
1703
1704 if (bmsr & BMSR_ESTATEN) {
1705 u16 ctrl1000 = 0;
1706
1707 if (estat & ESTATUS_1000_TFULL)
1708 ctrl1000 |= ADVERTISE_1000FULL;
1709 err = mii_write(np, np->phy_addr, MII_CTRL1000, ctrl1000);
1710 if (err)
1711 return err;
1712 }
1713
1714 bmcr = (BMCR_SPEED1000 | BMCR_FULLDPLX);
1715
1716 err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1717 if (err)
1718 return err;
1719
1720 err = mii_read(np, np->phy_addr, MII_BMCR);
1721 if (err < 0)
1722 return err;
1723 bmcr = mii_read(np, np->phy_addr, MII_BMCR);
1724
1725 err = mii_read(np, np->phy_addr, MII_BMSR);
1726 if (err < 0)
1727 return err;
1728
1729 return 0;
1730}
1731
1732static int mii_init_common(struct niu *np)
1733{
1734 struct niu_link_config *lp = &np->link_config;
1735 u16 bmcr, bmsr, adv, estat;
1736 int err;
1737
1738 err = mii_reset(np);
1739 if (err)
1740 return err;
1741
1742 err = mii_read(np, np->phy_addr, MII_BMSR);
1743 if (err < 0)
1744 return err;
1745 bmsr = err;
1746
1747 estat = 0;
1748 if (bmsr & BMSR_ESTATEN) {
1749 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1750 if (err < 0)
1751 return err;
1752 estat = err;
1753 }
1754
1755 bmcr = 0;
1756 err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1757 if (err)
1758 return err;
1759
1760 if (lp->loopback_mode == LOOPBACK_MAC) {
1761 bmcr |= BMCR_LOOPBACK;
1762 if (lp->active_speed == SPEED_1000)
1763 bmcr |= BMCR_SPEED1000;
1764 if (lp->active_duplex == DUPLEX_FULL)
1765 bmcr |= BMCR_FULLDPLX;
1766 }
1767
1768 if (lp->loopback_mode == LOOPBACK_PHY) {
1769 u16 aux;
1770
1771 aux = (BCM5464R_AUX_CTL_EXT_LB |
1772 BCM5464R_AUX_CTL_WRITE_1);
1773 err = mii_write(np, np->phy_addr, BCM5464R_AUX_CTL, aux);
1774 if (err)
1775 return err;
1776 }
1777
1778 if (lp->autoneg) {
1779 u16 ctrl1000;
1780
1781 adv = ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP;
1782 if ((bmsr & BMSR_10HALF) &&
1783 (lp->advertising & ADVERTISED_10baseT_Half))
1784 adv |= ADVERTISE_10HALF;
1785 if ((bmsr & BMSR_10FULL) &&
1786 (lp->advertising & ADVERTISED_10baseT_Full))
1787 adv |= ADVERTISE_10FULL;
1788 if ((bmsr & BMSR_100HALF) &&
1789 (lp->advertising & ADVERTISED_100baseT_Half))
1790 adv |= ADVERTISE_100HALF;
1791 if ((bmsr & BMSR_100FULL) &&
1792 (lp->advertising & ADVERTISED_100baseT_Full))
1793 adv |= ADVERTISE_100FULL;
1794 err = mii_write(np, np->phy_addr, MII_ADVERTISE, adv);
1795 if (err)
1796 return err;
1797
1798 if (likely(bmsr & BMSR_ESTATEN)) {
1799 ctrl1000 = 0;
1800 if ((estat & ESTATUS_1000_THALF) &&
1801 (lp->advertising & ADVERTISED_1000baseT_Half))
1802 ctrl1000 |= ADVERTISE_1000HALF;
1803 if ((estat & ESTATUS_1000_TFULL) &&
1804 (lp->advertising & ADVERTISED_1000baseT_Full))
1805 ctrl1000 |= ADVERTISE_1000FULL;
1806 err = mii_write(np, np->phy_addr,
1807 MII_CTRL1000, ctrl1000);
1808 if (err)
1809 return err;
1810 }
1811
1812 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
1813 } else {
1814 /* !lp->autoneg */
1815 int fulldpx;
1816
1817 if (lp->duplex == DUPLEX_FULL) {
1818 bmcr |= BMCR_FULLDPLX;
1819 fulldpx = 1;
1820 } else if (lp->duplex == DUPLEX_HALF)
1821 fulldpx = 0;
1822 else
1823 return -EINVAL;
1824
1825 if (lp->speed == SPEED_1000) {
1826 /* if X-full requested while not supported, or
1827 X-half requested while not supported... */
1828 if ((fulldpx && !(estat & ESTATUS_1000_TFULL)) ||
1829 (!fulldpx && !(estat & ESTATUS_1000_THALF)))
1830 return -EINVAL;
1831 bmcr |= BMCR_SPEED1000;
1832 } else if (lp->speed == SPEED_100) {
1833 if ((fulldpx && !(bmsr & BMSR_100FULL)) ||
1834 (!fulldpx && !(bmsr & BMSR_100HALF)))
1835 return -EINVAL;
1836 bmcr |= BMCR_SPEED100;
1837 } else if (lp->speed == SPEED_10) {
1838 if ((fulldpx && !(bmsr & BMSR_10FULL)) ||
1839 (!fulldpx && !(bmsr & BMSR_10HALF)))
1840 return -EINVAL;
1841 } else
1842 return -EINVAL;
1843 }
1844
1845 err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1846 if (err)
1847 return err;
1848
1849#if 0
1850 err = mii_read(np, np->phy_addr, MII_BMCR);
1851 if (err < 0)
1852 return err;
1853 bmcr = err;
1854
1855 err = mii_read(np, np->phy_addr, MII_BMSR);
1856 if (err < 0)
1857 return err;
1858 bmsr = err;
1859
1860 pr_info("Port %u after MII init bmcr[%04x] bmsr[%04x]\n",
1861 np->port, bmcr, bmsr);
1862#endif
1863
1864 return 0;
1865}
1866
1867static int xcvr_init_1g(struct niu *np)
1868{
1869 u64 val;
1870
1871 /* XXX shared resource, lock parent XXX */
1872 val = nr64(MIF_CONFIG);
1873 val &= ~MIF_CONFIG_INDIRECT_MODE;
1874 nw64(MIF_CONFIG, val);
1875
1876 return mii_init_common(np);
1877}
1878
1879static int niu_xcvr_init(struct niu *np)
1880{
1881 const struct niu_phy_ops *ops = np->phy_ops;
1882 int err;
1883
1884 err = 0;
1885 if (ops->xcvr_init)
1886 err = ops->xcvr_init(np);
1887
1888 return err;
1889}
1890
1891static int niu_serdes_init(struct niu *np)
1892{
1893 const struct niu_phy_ops *ops = np->phy_ops;
1894 int err;
1895
1896 err = 0;
1897 if (ops->serdes_init)
1898 err = ops->serdes_init(np);
1899
1900 return err;
1901}
1902
1903static void niu_init_xif(struct niu *);
1904static void niu_handle_led(struct niu *, int status);
1905
1906static int niu_link_status_common(struct niu *np, int link_up)
1907{
1908 struct niu_link_config *lp = &np->link_config;
1909 struct net_device *dev = np->dev;
1910 unsigned long flags;
1911
1912 if (!netif_carrier_ok(dev) && link_up) {
1913 netif_info(np, link, dev, "Link is up at %s, %s duplex\n",
1914 lp->active_speed == SPEED_10000 ? "10Gb/sec" :
1915 lp->active_speed == SPEED_1000 ? "1Gb/sec" :
1916 lp->active_speed == SPEED_100 ? "100Mbit/sec" :
1917 "10Mbit/sec",
1918 lp->active_duplex == DUPLEX_FULL ? "full" : "half");
1919
1920 spin_lock_irqsave(&np->lock, flags);
1921 niu_init_xif(np);
1922 niu_handle_led(np, 1);
1923 spin_unlock_irqrestore(&np->lock, flags);
1924
1925 netif_carrier_on(dev);
1926 } else if (netif_carrier_ok(dev) && !link_up) {
1927 netif_warn(np, link, dev, "Link is down\n");
1928 spin_lock_irqsave(&np->lock, flags);
1929 niu_handle_led(np, 0);
1930 spin_unlock_irqrestore(&np->lock, flags);
1931 netif_carrier_off(dev);
1932 }
1933
1934 return 0;
1935}
1936
1937static int link_status_10g_mrvl(struct niu *np, int *link_up_p)
1938{
1939 int err, link_up, pma_status, pcs_status;
1940
1941 link_up = 0;
1942
1943 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1944 MRVL88X2011_10G_PMD_STATUS_2);
1945 if (err < 0)
1946 goto out;
1947
1948 /* Check PMA/PMD Register: 1.0001.2 == 1 */
1949 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1950 MRVL88X2011_PMA_PMD_STATUS_1);
1951 if (err < 0)
1952 goto out;
1953
1954 pma_status = ((err & MRVL88X2011_LNK_STATUS_OK) ? 1 : 0);
1955
1956 /* Check PMC Register : 3.0001.2 == 1: read twice */
1957 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1958 MRVL88X2011_PMA_PMD_STATUS_1);
1959 if (err < 0)
1960 goto out;
1961
1962 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1963 MRVL88X2011_PMA_PMD_STATUS_1);
1964 if (err < 0)
1965 goto out;
1966
1967 pcs_status = ((err & MRVL88X2011_LNK_STATUS_OK) ? 1 : 0);
1968
1969 /* Check XGXS Register : 4.0018.[0-3,12] */
1970 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV4_ADDR,
1971 MRVL88X2011_10G_XGXS_LANE_STAT);
1972 if (err < 0)
1973 goto out;
1974
1975 if (err == (PHYXS_XGXS_LANE_STAT_ALINGED | PHYXS_XGXS_LANE_STAT_LANE3 |
1976 PHYXS_XGXS_LANE_STAT_LANE2 | PHYXS_XGXS_LANE_STAT_LANE1 |
1977 PHYXS_XGXS_LANE_STAT_LANE0 | PHYXS_XGXS_LANE_STAT_MAGIC |
1978 0x800))
1979 link_up = (pma_status && pcs_status) ? 1 : 0;
1980
1981 np->link_config.active_speed = SPEED_10000;
1982 np->link_config.active_duplex = DUPLEX_FULL;
1983 err = 0;
1984out:
1985 mrvl88x2011_act_led(np, (link_up ?
1986 MRVL88X2011_LED_CTL_PCS_ACT :
1987 MRVL88X2011_LED_CTL_OFF));
1988
1989 *link_up_p = link_up;
1990 return err;
1991}
1992
1993static int link_status_10g_bcm8706(struct niu *np, int *link_up_p)
1994{
1995 int err, link_up;
1996 link_up = 0;
1997
1998 err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
1999 BCM8704_PMD_RCV_SIGDET);
2000 if (err < 0 || err == 0xffff)
2001 goto out;
2002 if (!(err & PMD_RCV_SIGDET_GLOBAL)) {
2003 err = 0;
2004 goto out;
2005 }
2006
2007 err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
2008 BCM8704_PCS_10G_R_STATUS);
2009 if (err < 0)
2010 goto out;
2011
2012 if (!(err & PCS_10G_R_STATUS_BLK_LOCK)) {
2013 err = 0;
2014 goto out;
2015 }
2016
2017 err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
2018 BCM8704_PHYXS_XGXS_LANE_STAT);
2019 if (err < 0)
2020 goto out;
2021 if (err != (PHYXS_XGXS_LANE_STAT_ALINGED |
2022 PHYXS_XGXS_LANE_STAT_MAGIC |
2023 PHYXS_XGXS_LANE_STAT_PATTEST |
2024 PHYXS_XGXS_LANE_STAT_LANE3 |
2025 PHYXS_XGXS_LANE_STAT_LANE2 |
2026 PHYXS_XGXS_LANE_STAT_LANE1 |
2027 PHYXS_XGXS_LANE_STAT_LANE0)) {
2028 err = 0;
2029 np->link_config.active_speed = SPEED_INVALID;
2030 np->link_config.active_duplex = DUPLEX_INVALID;
2031 goto out;
2032 }
2033
2034 link_up = 1;
2035 np->link_config.active_speed = SPEED_10000;
2036 np->link_config.active_duplex = DUPLEX_FULL;
2037 err = 0;
2038
2039out:
2040 *link_up_p = link_up;
2041 return err;
2042}
2043
2044static int link_status_10g_bcom(struct niu *np, int *link_up_p)
2045{
2046 int err, link_up;
2047
2048 link_up = 0;
2049
2050 err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
2051 BCM8704_PMD_RCV_SIGDET);
2052 if (err < 0)
2053 goto out;
2054 if (!(err & PMD_RCV_SIGDET_GLOBAL)) {
2055 err = 0;
2056 goto out;
2057 }
2058
2059 err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
2060 BCM8704_PCS_10G_R_STATUS);
2061 if (err < 0)
2062 goto out;
2063 if (!(err & PCS_10G_R_STATUS_BLK_LOCK)) {
2064 err = 0;
2065 goto out;
2066 }
2067
2068 err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
2069 BCM8704_PHYXS_XGXS_LANE_STAT);
2070 if (err < 0)
2071 goto out;
2072
2073 if (err != (PHYXS_XGXS_LANE_STAT_ALINGED |
2074 PHYXS_XGXS_LANE_STAT_MAGIC |
2075 PHYXS_XGXS_LANE_STAT_LANE3 |
2076 PHYXS_XGXS_LANE_STAT_LANE2 |
2077 PHYXS_XGXS_LANE_STAT_LANE1 |
2078 PHYXS_XGXS_LANE_STAT_LANE0)) {
2079 err = 0;
2080 goto out;
2081 }
2082
2083 link_up = 1;
2084 np->link_config.active_speed = SPEED_10000;
2085 np->link_config.active_duplex = DUPLEX_FULL;
2086 err = 0;
2087
2088out:
2089 *link_up_p = link_up;
2090 return err;
2091}
2092
2093static int link_status_10g(struct niu *np, int *link_up_p)
2094{
2095 unsigned long flags;
2096 int err = -EINVAL;
2097
2098 spin_lock_irqsave(&np->lock, flags);
2099
2100 if (np->link_config.loopback_mode == LOOPBACK_DISABLED) {
2101 int phy_id;
2102
2103 phy_id = phy_decode(np->parent->port_phy, np->port);
2104 phy_id = np->parent->phy_probe_info.phy_id[phy_id][np->port];
2105
2106 /* handle different phy types */
2107 switch (phy_id & NIU_PHY_ID_MASK) {
2108 case NIU_PHY_ID_MRVL88X2011:
2109 err = link_status_10g_mrvl(np, link_up_p);
2110 break;
2111
2112 default: /* bcom 8704 */
2113 err = link_status_10g_bcom(np, link_up_p);
2114 break;
2115 }
2116 }
2117
2118 spin_unlock_irqrestore(&np->lock, flags);
2119
2120 return err;
2121}
2122
2123static int niu_10g_phy_present(struct niu *np)
2124{
2125 u64 sig, mask, val;
2126
2127 sig = nr64(ESR_INT_SIGNALS);
2128 switch (np->port) {
2129 case 0:
2130 mask = ESR_INT_SIGNALS_P0_BITS;
2131 val = (ESR_INT_SRDY0_P0 |
2132 ESR_INT_DET0_P0 |
2133 ESR_INT_XSRDY_P0 |
2134 ESR_INT_XDP_P0_CH3 |
2135 ESR_INT_XDP_P0_CH2 |
2136 ESR_INT_XDP_P0_CH1 |
2137 ESR_INT_XDP_P0_CH0);
2138 break;
2139
2140 case 1:
2141 mask = ESR_INT_SIGNALS_P1_BITS;
2142 val = (ESR_INT_SRDY0_P1 |
2143 ESR_INT_DET0_P1 |
2144 ESR_INT_XSRDY_P1 |
2145 ESR_INT_XDP_P1_CH3 |
2146 ESR_INT_XDP_P1_CH2 |
2147 ESR_INT_XDP_P1_CH1 |
2148 ESR_INT_XDP_P1_CH0);
2149 break;
2150
2151 default:
2152 return 0;
2153 }
2154
2155 if ((sig & mask) != val)
2156 return 0;
2157 return 1;
2158}
2159
2160static int link_status_10g_hotplug(struct niu *np, int *link_up_p)
2161{
2162 unsigned long flags;
2163 int err = 0;
2164 int phy_present;
2165 int phy_present_prev;
2166
2167 spin_lock_irqsave(&np->lock, flags);
2168
2169 if (np->link_config.loopback_mode == LOOPBACK_DISABLED) {
2170 phy_present_prev = (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) ?
2171 1 : 0;
2172 phy_present = niu_10g_phy_present(np);
2173 if (phy_present != phy_present_prev) {
2174 /* state change */
2175 if (phy_present) {
2176 /* A NEM was just plugged in */
2177 np->flags |= NIU_FLAGS_HOTPLUG_PHY_PRESENT;
2178 if (np->phy_ops->xcvr_init)
2179 err = np->phy_ops->xcvr_init(np);
2180 if (err) {
2181 err = mdio_read(np, np->phy_addr,
2182 BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
2183 if (err == 0xffff) {
2184 /* No mdio, back-to-back XAUI */
2185 goto out;
2186 }
2187 /* debounce */
2188 np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
2189 }
2190 } else {
2191 np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
2192 *link_up_p = 0;
2193 netif_warn(np, link, np->dev,
2194 "Hotplug PHY Removed\n");
2195 }
2196 }
2197out:
2198 if (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) {
2199 err = link_status_10g_bcm8706(np, link_up_p);
2200 if (err == 0xffff) {
2201 /* No mdio, back-to-back XAUI: it is C10NEM */
2202 *link_up_p = 1;
2203 np->link_config.active_speed = SPEED_10000;
2204 np->link_config.active_duplex = DUPLEX_FULL;
2205 }
2206 }
2207 }
2208
2209 spin_unlock_irqrestore(&np->lock, flags);
2210
2211 return 0;
2212}
2213
2214static int niu_link_status(struct niu *np, int *link_up_p)
2215{
2216 const struct niu_phy_ops *ops = np->phy_ops;
2217 int err;
2218
2219 err = 0;
2220 if (ops->link_status)
2221 err = ops->link_status(np, link_up_p);
2222
2223 return err;
2224}
2225
2226static void niu_timer(struct timer_list *t)
2227{
2228 struct niu *np = from_timer(np, t, timer);
2229 unsigned long off;
2230 int err, link_up;
2231
2232 err = niu_link_status(np, &link_up);
2233 if (!err)
2234 niu_link_status_common(np, link_up);
2235
2236 if (netif_carrier_ok(np->dev))
2237 off = 5 * HZ;
2238 else
2239 off = 1 * HZ;
2240 np->timer.expires = jiffies + off;
2241
2242 add_timer(&np->timer);
2243}
2244
2245static const struct niu_phy_ops phy_ops_10g_serdes = {
2246 .serdes_init = serdes_init_10g_serdes,
2247 .link_status = link_status_10g_serdes,
2248};
2249
2250static const struct niu_phy_ops phy_ops_10g_serdes_niu = {
2251 .serdes_init = serdes_init_niu_10g_serdes,
2252 .link_status = link_status_10g_serdes,
2253};
2254
2255static const struct niu_phy_ops phy_ops_1g_serdes_niu = {
2256 .serdes_init = serdes_init_niu_1g_serdes,
2257 .link_status = link_status_1g_serdes,
2258};
2259
2260static const struct niu_phy_ops phy_ops_1g_rgmii = {
2261 .xcvr_init = xcvr_init_1g_rgmii,
2262 .link_status = link_status_1g_rgmii,
2263};
2264
2265static const struct niu_phy_ops phy_ops_10g_fiber_niu = {
2266 .serdes_init = serdes_init_niu_10g_fiber,
2267 .xcvr_init = xcvr_init_10g,
2268 .link_status = link_status_10g,
2269};
2270
2271static const struct niu_phy_ops phy_ops_10g_fiber = {
2272 .serdes_init = serdes_init_10g,
2273 .xcvr_init = xcvr_init_10g,
2274 .link_status = link_status_10g,
2275};
2276
2277static const struct niu_phy_ops phy_ops_10g_fiber_hotplug = {
2278 .serdes_init = serdes_init_10g,
2279 .xcvr_init = xcvr_init_10g_bcm8706,
2280 .link_status = link_status_10g_hotplug,
2281};
2282
2283static const struct niu_phy_ops phy_ops_niu_10g_hotplug = {
2284 .serdes_init = serdes_init_niu_10g_fiber,
2285 .xcvr_init = xcvr_init_10g_bcm8706,
2286 .link_status = link_status_10g_hotplug,
2287};
2288
2289static const struct niu_phy_ops phy_ops_10g_copper = {
2290 .serdes_init = serdes_init_10g,
2291 .link_status = link_status_10g, /* XXX */
2292};
2293
2294static const struct niu_phy_ops phy_ops_1g_fiber = {
2295 .serdes_init = serdes_init_1g,
2296 .xcvr_init = xcvr_init_1g,
2297 .link_status = link_status_1g,
2298};
2299
2300static const struct niu_phy_ops phy_ops_1g_copper = {
2301 .xcvr_init = xcvr_init_1g,
2302 .link_status = link_status_1g,
2303};
2304
2305struct niu_phy_template {
2306 const struct niu_phy_ops *ops;
2307 u32 phy_addr_base;
2308};
2309
2310static const struct niu_phy_template phy_template_niu_10g_fiber = {
2311 .ops = &phy_ops_10g_fiber_niu,
2312 .phy_addr_base = 16,
2313};
2314
2315static const struct niu_phy_template phy_template_niu_10g_serdes = {
2316 .ops = &phy_ops_10g_serdes_niu,
2317 .phy_addr_base = 0,
2318};
2319
2320static const struct niu_phy_template phy_template_niu_1g_serdes = {
2321 .ops = &phy_ops_1g_serdes_niu,
2322 .phy_addr_base = 0,
2323};
2324
2325static const struct niu_phy_template phy_template_10g_fiber = {
2326 .ops = &phy_ops_10g_fiber,
2327 .phy_addr_base = 8,
2328};
2329
2330static const struct niu_phy_template phy_template_10g_fiber_hotplug = {
2331 .ops = &phy_ops_10g_fiber_hotplug,
2332 .phy_addr_base = 8,
2333};
2334
2335static const struct niu_phy_template phy_template_niu_10g_hotplug = {
2336 .ops = &phy_ops_niu_10g_hotplug,
2337 .phy_addr_base = 8,
2338};
2339
2340static const struct niu_phy_template phy_template_10g_copper = {
2341 .ops = &phy_ops_10g_copper,
2342 .phy_addr_base = 10,
2343};
2344
2345static const struct niu_phy_template phy_template_1g_fiber = {
2346 .ops = &phy_ops_1g_fiber,
2347 .phy_addr_base = 0,
2348};
2349
2350static const struct niu_phy_template phy_template_1g_copper = {
2351 .ops = &phy_ops_1g_copper,
2352 .phy_addr_base = 0,
2353};
2354
2355static const struct niu_phy_template phy_template_1g_rgmii = {
2356 .ops = &phy_ops_1g_rgmii,
2357 .phy_addr_base = 0,
2358};
2359
2360static const struct niu_phy_template phy_template_10g_serdes = {
2361 .ops = &phy_ops_10g_serdes,
2362 .phy_addr_base = 0,
2363};
2364
2365static int niu_atca_port_num[4] = {
2366 0, 0, 11, 10
2367};
2368
2369static int serdes_init_10g_serdes(struct niu *np)
2370{
2371 struct niu_link_config *lp = &np->link_config;
2372 unsigned long ctrl_reg, test_cfg_reg, pll_cfg, i;
2373 u64 ctrl_val, test_cfg_val, sig, mask, val;
2374
2375 switch (np->port) {
2376 case 0:
2377 ctrl_reg = ENET_SERDES_0_CTRL_CFG;
2378 test_cfg_reg = ENET_SERDES_0_TEST_CFG;
2379 pll_cfg = ENET_SERDES_0_PLL_CFG;
2380 break;
2381 case 1:
2382 ctrl_reg = ENET_SERDES_1_CTRL_CFG;
2383 test_cfg_reg = ENET_SERDES_1_TEST_CFG;
2384 pll_cfg = ENET_SERDES_1_PLL_CFG;
2385 break;
2386
2387 default:
2388 return -EINVAL;
2389 }
2390 ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
2391 ENET_SERDES_CTRL_SDET_1 |
2392 ENET_SERDES_CTRL_SDET_2 |
2393 ENET_SERDES_CTRL_SDET_3 |
2394 (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
2395 (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
2396 (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
2397 (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
2398 (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
2399 (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
2400 (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
2401 (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
2402 test_cfg_val = 0;
2403
2404 if (lp->loopback_mode == LOOPBACK_PHY) {
2405 test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
2406 ENET_SERDES_TEST_MD_0_SHIFT) |
2407 (ENET_TEST_MD_PAD_LOOPBACK <<
2408 ENET_SERDES_TEST_MD_1_SHIFT) |
2409 (ENET_TEST_MD_PAD_LOOPBACK <<
2410 ENET_SERDES_TEST_MD_2_SHIFT) |
2411 (ENET_TEST_MD_PAD_LOOPBACK <<
2412 ENET_SERDES_TEST_MD_3_SHIFT));
2413 }
2414
2415 esr_reset(np);
2416 nw64(pll_cfg, ENET_SERDES_PLL_FBDIV2);
2417 nw64(ctrl_reg, ctrl_val);
2418 nw64(test_cfg_reg, test_cfg_val);
2419
2420 /* Initialize all 4 lanes of the SERDES. */
2421 for (i = 0; i < 4; i++) {
2422 u32 rxtx_ctrl, glue0;
2423 int err;
2424
2425 err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
2426 if (err)
2427 return err;
2428 err = esr_read_glue0(np, i, &glue0);
2429 if (err)
2430 return err;
2431
2432 rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
2433 rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
2434 (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
2435
2436 glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
2437 ESR_GLUE_CTRL0_THCNT |
2438 ESR_GLUE_CTRL0_BLTIME);
2439 glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
2440 (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
2441 (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
2442 (BLTIME_300_CYCLES <<
2443 ESR_GLUE_CTRL0_BLTIME_SHIFT));
2444
2445 err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
2446 if (err)
2447 return err;
2448 err = esr_write_glue0(np, i, glue0);
2449 if (err)
2450 return err;
2451 }
2452
2453
2454 sig = nr64(ESR_INT_SIGNALS);
2455 switch (np->port) {
2456 case 0:
2457 mask = ESR_INT_SIGNALS_P0_BITS;
2458 val = (ESR_INT_SRDY0_P0 |
2459 ESR_INT_DET0_P0 |
2460 ESR_INT_XSRDY_P0 |
2461 ESR_INT_XDP_P0_CH3 |
2462 ESR_INT_XDP_P0_CH2 |
2463 ESR_INT_XDP_P0_CH1 |
2464 ESR_INT_XDP_P0_CH0);
2465 break;
2466
2467 case 1:
2468 mask = ESR_INT_SIGNALS_P1_BITS;
2469 val = (ESR_INT_SRDY0_P1 |
2470 ESR_INT_DET0_P1 |
2471 ESR_INT_XSRDY_P1 |
2472 ESR_INT_XDP_P1_CH3 |
2473 ESR_INT_XDP_P1_CH2 |
2474 ESR_INT_XDP_P1_CH1 |
2475 ESR_INT_XDP_P1_CH0);
2476 break;
2477
2478 default:
2479 return -EINVAL;
2480 }
2481
2482 if ((sig & mask) != val) {
2483 int err;
2484 err = serdes_init_1g_serdes(np);
2485 if (!err) {
2486 np->flags &= ~NIU_FLAGS_10G;
2487 np->mac_xcvr = MAC_XCVR_PCS;
2488 } else {
2489 netdev_err(np->dev, "Port %u 10G/1G SERDES Link Failed\n",
2490 np->port);
2491 return -ENODEV;
2492 }
2493 }
2494
2495 return 0;
2496}
2497
2498static int niu_determine_phy_disposition(struct niu *np)
2499{
2500 struct niu_parent *parent = np->parent;
2501 u8 plat_type = parent->plat_type;
2502 const struct niu_phy_template *tp;
2503 u32 phy_addr_off = 0;
2504
2505 if (plat_type == PLAT_TYPE_NIU) {
2506 switch (np->flags &
2507 (NIU_FLAGS_10G |
2508 NIU_FLAGS_FIBER |
2509 NIU_FLAGS_XCVR_SERDES)) {
2510 case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
2511 /* 10G Serdes */
2512 tp = &phy_template_niu_10g_serdes;
2513 break;
2514 case NIU_FLAGS_XCVR_SERDES:
2515 /* 1G Serdes */
2516 tp = &phy_template_niu_1g_serdes;
2517 break;
2518 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
2519 /* 10G Fiber */
2520 default:
2521 if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
2522 tp = &phy_template_niu_10g_hotplug;
2523 if (np->port == 0)
2524 phy_addr_off = 8;
2525 if (np->port == 1)
2526 phy_addr_off = 12;
2527 } else {
2528 tp = &phy_template_niu_10g_fiber;
2529 phy_addr_off += np->port;
2530 }
2531 break;
2532 }
2533 } else {
2534 switch (np->flags &
2535 (NIU_FLAGS_10G |
2536 NIU_FLAGS_FIBER |
2537 NIU_FLAGS_XCVR_SERDES)) {
2538 case 0:
2539 /* 1G copper */
2540 tp = &phy_template_1g_copper;
2541 if (plat_type == PLAT_TYPE_VF_P0)
2542 phy_addr_off = 10;
2543 else if (plat_type == PLAT_TYPE_VF_P1)
2544 phy_addr_off = 26;
2545
2546 phy_addr_off += (np->port ^ 0x3);
2547 break;
2548
2549 case NIU_FLAGS_10G:
2550 /* 10G copper */
2551 tp = &phy_template_10g_copper;
2552 break;
2553
2554 case NIU_FLAGS_FIBER:
2555 /* 1G fiber */
2556 tp = &phy_template_1g_fiber;
2557 break;
2558
2559 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
2560 /* 10G fiber */
2561 tp = &phy_template_10g_fiber;
2562 if (plat_type == PLAT_TYPE_VF_P0 ||
2563 plat_type == PLAT_TYPE_VF_P1)
2564 phy_addr_off = 8;
2565 phy_addr_off += np->port;
2566 if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
2567 tp = &phy_template_10g_fiber_hotplug;
2568 if (np->port == 0)
2569 phy_addr_off = 8;
2570 if (np->port == 1)
2571 phy_addr_off = 12;
2572 }
2573 break;
2574
2575 case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
2576 case NIU_FLAGS_XCVR_SERDES | NIU_FLAGS_FIBER:
2577 case NIU_FLAGS_XCVR_SERDES:
2578 switch(np->port) {
2579 case 0:
2580 case 1:
2581 tp = &phy_template_10g_serdes;
2582 break;
2583 case 2:
2584 case 3:
2585 tp = &phy_template_1g_rgmii;
2586 break;
2587 default:
2588 return -EINVAL;
2589 }
2590 phy_addr_off = niu_atca_port_num[np->port];
2591 break;
2592
2593 default:
2594 return -EINVAL;
2595 }
2596 }
2597
2598 np->phy_ops = tp->ops;
2599 np->phy_addr = tp->phy_addr_base + phy_addr_off;
2600
2601 return 0;
2602}
2603
2604static int niu_init_link(struct niu *np)
2605{
2606 struct niu_parent *parent = np->parent;
2607 int err, ignore;
2608
2609 if (parent->plat_type == PLAT_TYPE_NIU) {
2610 err = niu_xcvr_init(np);
2611 if (err)
2612 return err;
2613 msleep(200);
2614 }
2615 err = niu_serdes_init(np);
2616 if (err && !(np->flags & NIU_FLAGS_HOTPLUG_PHY))
2617 return err;
2618 msleep(200);
2619 err = niu_xcvr_init(np);
2620 if (!err || (np->flags & NIU_FLAGS_HOTPLUG_PHY))
2621 niu_link_status(np, &ignore);
2622 return 0;
2623}
2624
2625static void niu_set_primary_mac(struct niu *np, const unsigned char *addr)
2626{
2627 u16 reg0 = addr[4] << 8 | addr[5];
2628 u16 reg1 = addr[2] << 8 | addr[3];
2629 u16 reg2 = addr[0] << 8 | addr[1];
2630
2631 if (np->flags & NIU_FLAGS_XMAC) {
2632 nw64_mac(XMAC_ADDR0, reg0);
2633 nw64_mac(XMAC_ADDR1, reg1);
2634 nw64_mac(XMAC_ADDR2, reg2);
2635 } else {
2636 nw64_mac(BMAC_ADDR0, reg0);
2637 nw64_mac(BMAC_ADDR1, reg1);
2638 nw64_mac(BMAC_ADDR2, reg2);
2639 }
2640}
2641
2642static int niu_num_alt_addr(struct niu *np)
2643{
2644 if (np->flags & NIU_FLAGS_XMAC)
2645 return XMAC_NUM_ALT_ADDR;
2646 else
2647 return BMAC_NUM_ALT_ADDR;
2648}
2649
2650static int niu_set_alt_mac(struct niu *np, int index, unsigned char *addr)
2651{
2652 u16 reg0 = addr[4] << 8 | addr[5];
2653 u16 reg1 = addr[2] << 8 | addr[3];
2654 u16 reg2 = addr[0] << 8 | addr[1];
2655
2656 if (index >= niu_num_alt_addr(np))
2657 return -EINVAL;
2658
2659 if (np->flags & NIU_FLAGS_XMAC) {
2660 nw64_mac(XMAC_ALT_ADDR0(index), reg0);
2661 nw64_mac(XMAC_ALT_ADDR1(index), reg1);
2662 nw64_mac(XMAC_ALT_ADDR2(index), reg2);
2663 } else {
2664 nw64_mac(BMAC_ALT_ADDR0(index), reg0);
2665 nw64_mac(BMAC_ALT_ADDR1(index), reg1);
2666 nw64_mac(BMAC_ALT_ADDR2(index), reg2);
2667 }
2668
2669 return 0;
2670}
2671
2672static int niu_enable_alt_mac(struct niu *np, int index, int on)
2673{
2674 unsigned long reg;
2675 u64 val, mask;
2676
2677 if (index >= niu_num_alt_addr(np))
2678 return -EINVAL;
2679
2680 if (np->flags & NIU_FLAGS_XMAC) {
2681 reg = XMAC_ADDR_CMPEN;
2682 mask = 1 << index;
2683 } else {
2684 reg = BMAC_ADDR_CMPEN;
2685 mask = 1 << (index + 1);
2686 }
2687
2688 val = nr64_mac(reg);
2689 if (on)
2690 val |= mask;
2691 else
2692 val &= ~mask;
2693 nw64_mac(reg, val);
2694
2695 return 0;
2696}
2697
2698static void __set_rdc_table_num_hw(struct niu *np, unsigned long reg,
2699 int num, int mac_pref)
2700{
2701 u64 val = nr64_mac(reg);
2702 val &= ~(HOST_INFO_MACRDCTBLN | HOST_INFO_MPR);
2703 val |= num;
2704 if (mac_pref)
2705 val |= HOST_INFO_MPR;
2706 nw64_mac(reg, val);
2707}
2708
2709static int __set_rdc_table_num(struct niu *np,
2710 int xmac_index, int bmac_index,
2711 int rdc_table_num, int mac_pref)
2712{
2713 unsigned long reg;
2714
2715 if (rdc_table_num & ~HOST_INFO_MACRDCTBLN)
2716 return -EINVAL;
2717 if (np->flags & NIU_FLAGS_XMAC)
2718 reg = XMAC_HOST_INFO(xmac_index);
2719 else
2720 reg = BMAC_HOST_INFO(bmac_index);
2721 __set_rdc_table_num_hw(np, reg, rdc_table_num, mac_pref);
2722 return 0;
2723}
2724
2725static int niu_set_primary_mac_rdc_table(struct niu *np, int table_num,
2726 int mac_pref)
2727{
2728 return __set_rdc_table_num(np, 17, 0, table_num, mac_pref);
2729}
2730
2731static int niu_set_multicast_mac_rdc_table(struct niu *np, int table_num,
2732 int mac_pref)
2733{
2734 return __set_rdc_table_num(np, 16, 8, table_num, mac_pref);
2735}
2736
2737static int niu_set_alt_mac_rdc_table(struct niu *np, int idx,
2738 int table_num, int mac_pref)
2739{
2740 if (idx >= niu_num_alt_addr(np))
2741 return -EINVAL;
2742 return __set_rdc_table_num(np, idx, idx + 1, table_num, mac_pref);
2743}
2744
2745static u64 vlan_entry_set_parity(u64 reg_val)
2746{
2747 u64 port01_mask;
2748 u64 port23_mask;
2749
2750 port01_mask = 0x00ff;
2751 port23_mask = 0xff00;
2752
2753 if (hweight64(reg_val & port01_mask) & 1)
2754 reg_val |= ENET_VLAN_TBL_PARITY0;
2755 else
2756 reg_val &= ~ENET_VLAN_TBL_PARITY0;
2757
2758 if (hweight64(reg_val & port23_mask) & 1)
2759 reg_val |= ENET_VLAN_TBL_PARITY1;
2760 else
2761 reg_val &= ~ENET_VLAN_TBL_PARITY1;
2762
2763 return reg_val;
2764}
2765
2766static void vlan_tbl_write(struct niu *np, unsigned long index,
2767 int port, int vpr, int rdc_table)
2768{
2769 u64 reg_val = nr64(ENET_VLAN_TBL(index));
2770
2771 reg_val &= ~((ENET_VLAN_TBL_VPR |
2772 ENET_VLAN_TBL_VLANRDCTBLN) <<
2773 ENET_VLAN_TBL_SHIFT(port));
2774 if (vpr)
2775 reg_val |= (ENET_VLAN_TBL_VPR <<
2776 ENET_VLAN_TBL_SHIFT(port));
2777 reg_val |= (rdc_table << ENET_VLAN_TBL_SHIFT(port));
2778
2779 reg_val = vlan_entry_set_parity(reg_val);
2780
2781 nw64(ENET_VLAN_TBL(index), reg_val);
2782}
2783
2784static void vlan_tbl_clear(struct niu *np)
2785{
2786 int i;
2787
2788 for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++)
2789 nw64(ENET_VLAN_TBL(i), 0);
2790}
2791
2792static int tcam_wait_bit(struct niu *np, u64 bit)
2793{
2794 int limit = 1000;
2795
2796 while (--limit > 0) {
2797 if (nr64(TCAM_CTL) & bit)
2798 break;
2799 udelay(1);
2800 }
2801 if (limit <= 0)
2802 return -ENODEV;
2803
2804 return 0;
2805}
2806
2807static int tcam_flush(struct niu *np, int index)
2808{
2809 nw64(TCAM_KEY_0, 0x00);
2810 nw64(TCAM_KEY_MASK_0, 0xff);
2811 nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index));
2812
2813 return tcam_wait_bit(np, TCAM_CTL_STAT);
2814}
2815
2816#if 0
2817static int tcam_read(struct niu *np, int index,
2818 u64 *key, u64 *mask)
2819{
2820 int err;
2821
2822 nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_READ | index));
2823 err = tcam_wait_bit(np, TCAM_CTL_STAT);
2824 if (!err) {
2825 key[0] = nr64(TCAM_KEY_0);
2826 key[1] = nr64(TCAM_KEY_1);
2827 key[2] = nr64(TCAM_KEY_2);
2828 key[3] = nr64(TCAM_KEY_3);
2829 mask[0] = nr64(TCAM_KEY_MASK_0);
2830 mask[1] = nr64(TCAM_KEY_MASK_1);
2831 mask[2] = nr64(TCAM_KEY_MASK_2);
2832 mask[3] = nr64(TCAM_KEY_MASK_3);
2833 }
2834 return err;
2835}
2836#endif
2837
2838static int tcam_write(struct niu *np, int index,
2839 u64 *key, u64 *mask)
2840{
2841 nw64(TCAM_KEY_0, key[0]);
2842 nw64(TCAM_KEY_1, key[1]);
2843 nw64(TCAM_KEY_2, key[2]);
2844 nw64(TCAM_KEY_3, key[3]);
2845 nw64(TCAM_KEY_MASK_0, mask[0]);
2846 nw64(TCAM_KEY_MASK_1, mask[1]);
2847 nw64(TCAM_KEY_MASK_2, mask[2]);
2848 nw64(TCAM_KEY_MASK_3, mask[3]);
2849 nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index));
2850
2851 return tcam_wait_bit(np, TCAM_CTL_STAT);
2852}
2853
2854#if 0
2855static int tcam_assoc_read(struct niu *np, int index, u64 *data)
2856{
2857 int err;
2858
2859 nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_READ | index));
2860 err = tcam_wait_bit(np, TCAM_CTL_STAT);
2861 if (!err)
2862 *data = nr64(TCAM_KEY_1);
2863
2864 return err;
2865}
2866#endif
2867
2868static int tcam_assoc_write(struct niu *np, int index, u64 assoc_data)
2869{
2870 nw64(TCAM_KEY_1, assoc_data);
2871 nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_WRITE | index));
2872
2873 return tcam_wait_bit(np, TCAM_CTL_STAT);
2874}
2875
2876static void tcam_enable(struct niu *np, int on)
2877{
2878 u64 val = nr64(FFLP_CFG_1);
2879
2880 if (on)
2881 val &= ~FFLP_CFG_1_TCAM_DIS;
2882 else
2883 val |= FFLP_CFG_1_TCAM_DIS;
2884 nw64(FFLP_CFG_1, val);
2885}
2886
2887static void tcam_set_lat_and_ratio(struct niu *np, u64 latency, u64 ratio)
2888{
2889 u64 val = nr64(FFLP_CFG_1);
2890
2891 val &= ~(FFLP_CFG_1_FFLPINITDONE |
2892 FFLP_CFG_1_CAMLAT |
2893 FFLP_CFG_1_CAMRATIO);
2894 val |= (latency << FFLP_CFG_1_CAMLAT_SHIFT);
2895 val |= (ratio << FFLP_CFG_1_CAMRATIO_SHIFT);
2896 nw64(FFLP_CFG_1, val);
2897
2898 val = nr64(FFLP_CFG_1);
2899 val |= FFLP_CFG_1_FFLPINITDONE;
2900 nw64(FFLP_CFG_1, val);
2901}
2902
2903static int tcam_user_eth_class_enable(struct niu *np, unsigned long class,
2904 int on)
2905{
2906 unsigned long reg;
2907 u64 val;
2908
2909 if (class < CLASS_CODE_ETHERTYPE1 ||
2910 class > CLASS_CODE_ETHERTYPE2)
2911 return -EINVAL;
2912
2913 reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1);
2914 val = nr64(reg);
2915 if (on)
2916 val |= L2_CLS_VLD;
2917 else
2918 val &= ~L2_CLS_VLD;
2919 nw64(reg, val);
2920
2921 return 0;
2922}
2923
2924#if 0
2925static int tcam_user_eth_class_set(struct niu *np, unsigned long class,
2926 u64 ether_type)
2927{
2928 unsigned long reg;
2929 u64 val;
2930
2931 if (class < CLASS_CODE_ETHERTYPE1 ||
2932 class > CLASS_CODE_ETHERTYPE2 ||
2933 (ether_type & ~(u64)0xffff) != 0)
2934 return -EINVAL;
2935
2936 reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1);
2937 val = nr64(reg);
2938 val &= ~L2_CLS_ETYPE;
2939 val |= (ether_type << L2_CLS_ETYPE_SHIFT);
2940 nw64(reg, val);
2941
2942 return 0;
2943}
2944#endif
2945
2946static int tcam_user_ip_class_enable(struct niu *np, unsigned long class,
2947 int on)
2948{
2949 unsigned long reg;
2950 u64 val;
2951
2952 if (class < CLASS_CODE_USER_PROG1 ||
2953 class > CLASS_CODE_USER_PROG4)
2954 return -EINVAL;
2955
2956 reg = L3_CLS(class - CLASS_CODE_USER_PROG1);
2957 val = nr64(reg);
2958 if (on)
2959 val |= L3_CLS_VALID;
2960 else
2961 val &= ~L3_CLS_VALID;
2962 nw64(reg, val);
2963
2964 return 0;
2965}
2966
2967static int tcam_user_ip_class_set(struct niu *np, unsigned long class,
2968 int ipv6, u64 protocol_id,
2969 u64 tos_mask, u64 tos_val)
2970{
2971 unsigned long reg;
2972 u64 val;
2973
2974 if (class < CLASS_CODE_USER_PROG1 ||
2975 class > CLASS_CODE_USER_PROG4 ||
2976 (protocol_id & ~(u64)0xff) != 0 ||
2977 (tos_mask & ~(u64)0xff) != 0 ||
2978 (tos_val & ~(u64)0xff) != 0)
2979 return -EINVAL;
2980
2981 reg = L3_CLS(class - CLASS_CODE_USER_PROG1);
2982 val = nr64(reg);
2983 val &= ~(L3_CLS_IPVER | L3_CLS_PID |
2984 L3_CLS_TOSMASK | L3_CLS_TOS);
2985 if (ipv6)
2986 val |= L3_CLS_IPVER;
2987 val |= (protocol_id << L3_CLS_PID_SHIFT);
2988 val |= (tos_mask << L3_CLS_TOSMASK_SHIFT);
2989 val |= (tos_val << L3_CLS_TOS_SHIFT);
2990 nw64(reg, val);
2991
2992 return 0;
2993}
2994
2995static int tcam_early_init(struct niu *np)
2996{
2997 unsigned long i;
2998 int err;
2999
3000 tcam_enable(np, 0);
3001 tcam_set_lat_and_ratio(np,
3002 DEFAULT_TCAM_LATENCY,
3003 DEFAULT_TCAM_ACCESS_RATIO);
3004 for (i = CLASS_CODE_ETHERTYPE1; i <= CLASS_CODE_ETHERTYPE2; i++) {
3005 err = tcam_user_eth_class_enable(np, i, 0);
3006 if (err)
3007 return err;
3008 }
3009 for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_USER_PROG4; i++) {
3010 err = tcam_user_ip_class_enable(np, i, 0);
3011 if (err)
3012 return err;
3013 }
3014
3015 return 0;
3016}
3017
3018static int tcam_flush_all(struct niu *np)
3019{
3020 unsigned long i;
3021
3022 for (i = 0; i < np->parent->tcam_num_entries; i++) {
3023 int err = tcam_flush(np, i);
3024 if (err)
3025 return err;
3026 }
3027 return 0;
3028}
3029
3030static u64 hash_addr_regval(unsigned long index, unsigned long num_entries)
3031{
3032 return (u64)index | (num_entries == 1 ? HASH_TBL_ADDR_AUTOINC : 0);
3033}
3034
3035#if 0
3036static int hash_read(struct niu *np, unsigned long partition,
3037 unsigned long index, unsigned long num_entries,
3038 u64 *data)
3039{
3040 u64 val = hash_addr_regval(index, num_entries);
3041 unsigned long i;
3042
3043 if (partition >= FCRAM_NUM_PARTITIONS ||
3044 index + num_entries > FCRAM_SIZE)
3045 return -EINVAL;
3046
3047 nw64(HASH_TBL_ADDR(partition), val);
3048 for (i = 0; i < num_entries; i++)
3049 data[i] = nr64(HASH_TBL_DATA(partition));
3050
3051 return 0;
3052}
3053#endif
3054
3055static int hash_write(struct niu *np, unsigned long partition,
3056 unsigned long index, unsigned long num_entries,
3057 u64 *data)
3058{
3059 u64 val = hash_addr_regval(index, num_entries);
3060 unsigned long i;
3061
3062 if (partition >= FCRAM_NUM_PARTITIONS ||
3063 index + (num_entries * 8) > FCRAM_SIZE)
3064 return -EINVAL;
3065
3066 nw64(HASH_TBL_ADDR(partition), val);
3067 for (i = 0; i < num_entries; i++)
3068 nw64(HASH_TBL_DATA(partition), data[i]);
3069
3070 return 0;
3071}
3072
3073static void fflp_reset(struct niu *np)
3074{
3075 u64 val;
3076
3077 nw64(FFLP_CFG_1, FFLP_CFG_1_PIO_FIO_RST);
3078 udelay(10);
3079 nw64(FFLP_CFG_1, 0);
3080
3081 val = FFLP_CFG_1_FCRAMOUTDR_NORMAL | FFLP_CFG_1_FFLPINITDONE;
3082 nw64(FFLP_CFG_1, val);
3083}
3084
3085static void fflp_set_timings(struct niu *np)
3086{
3087 u64 val = nr64(FFLP_CFG_1);
3088
3089 val &= ~FFLP_CFG_1_FFLPINITDONE;
3090 val |= (DEFAULT_FCRAMRATIO << FFLP_CFG_1_FCRAMRATIO_SHIFT);
3091 nw64(FFLP_CFG_1, val);
3092
3093 val = nr64(FFLP_CFG_1);
3094 val |= FFLP_CFG_1_FFLPINITDONE;
3095 nw64(FFLP_CFG_1, val);
3096
3097 val = nr64(FCRAM_REF_TMR);
3098 val &= ~(FCRAM_REF_TMR_MAX | FCRAM_REF_TMR_MIN);
3099 val |= (DEFAULT_FCRAM_REFRESH_MAX << FCRAM_REF_TMR_MAX_SHIFT);
3100 val |= (DEFAULT_FCRAM_REFRESH_MIN << FCRAM_REF_TMR_MIN_SHIFT);
3101 nw64(FCRAM_REF_TMR, val);
3102}
3103
3104static int fflp_set_partition(struct niu *np, u64 partition,
3105 u64 mask, u64 base, int enable)
3106{
3107 unsigned long reg;
3108 u64 val;
3109
3110 if (partition >= FCRAM_NUM_PARTITIONS ||
3111 (mask & ~(u64)0x1f) != 0 ||
3112 (base & ~(u64)0x1f) != 0)
3113 return -EINVAL;
3114
3115 reg = FLW_PRT_SEL(partition);
3116
3117 val = nr64(reg);
3118 val &= ~(FLW_PRT_SEL_EXT | FLW_PRT_SEL_MASK | FLW_PRT_SEL_BASE);
3119 val |= (mask << FLW_PRT_SEL_MASK_SHIFT);
3120 val |= (base << FLW_PRT_SEL_BASE_SHIFT);
3121 if (enable)
3122 val |= FLW_PRT_SEL_EXT;
3123 nw64(reg, val);
3124
3125 return 0;
3126}
3127
3128static int fflp_disable_all_partitions(struct niu *np)
3129{
3130 unsigned long i;
3131
3132 for (i = 0; i < FCRAM_NUM_PARTITIONS; i++) {
3133 int err = fflp_set_partition(np, 0, 0, 0, 0);
3134 if (err)
3135 return err;
3136 }
3137 return 0;
3138}
3139
3140static void fflp_llcsnap_enable(struct niu *np, int on)
3141{
3142 u64 val = nr64(FFLP_CFG_1);
3143
3144 if (on)
3145 val |= FFLP_CFG_1_LLCSNAP;
3146 else
3147 val &= ~FFLP_CFG_1_LLCSNAP;
3148 nw64(FFLP_CFG_1, val);
3149}
3150
3151static void fflp_errors_enable(struct niu *np, int on)
3152{
3153 u64 val = nr64(FFLP_CFG_1);
3154
3155 if (on)
3156 val &= ~FFLP_CFG_1_ERRORDIS;
3157 else
3158 val |= FFLP_CFG_1_ERRORDIS;
3159 nw64(FFLP_CFG_1, val);
3160}
3161
3162static int fflp_hash_clear(struct niu *np)
3163{
3164 struct fcram_hash_ipv4 ent;
3165 unsigned long i;
3166
3167 /* IPV4 hash entry with valid bit clear, rest is don't care. */
3168 memset(&ent, 0, sizeof(ent));
3169 ent.header = HASH_HEADER_EXT;
3170
3171 for (i = 0; i < FCRAM_SIZE; i += sizeof(ent)) {
3172 int err = hash_write(np, 0, i, 1, (u64 *) &ent);
3173 if (err)
3174 return err;
3175 }
3176 return 0;
3177}
3178
3179static int fflp_early_init(struct niu *np)
3180{
3181 struct niu_parent *parent;
3182 unsigned long flags;
3183 int err;
3184
3185 niu_lock_parent(np, flags);
3186
3187 parent = np->parent;
3188 err = 0;
3189 if (!(parent->flags & PARENT_FLGS_CLS_HWINIT)) {
3190 if (np->parent->plat_type != PLAT_TYPE_NIU) {
3191 fflp_reset(np);
3192 fflp_set_timings(np);
3193 err = fflp_disable_all_partitions(np);
3194 if (err) {
3195 netif_printk(np, probe, KERN_DEBUG, np->dev,
3196 "fflp_disable_all_partitions failed, err=%d\n",
3197 err);
3198 goto out;
3199 }
3200 }
3201
3202 err = tcam_early_init(np);
3203 if (err) {
3204 netif_printk(np, probe, KERN_DEBUG, np->dev,
3205 "tcam_early_init failed, err=%d\n", err);
3206 goto out;
3207 }
3208 fflp_llcsnap_enable(np, 1);
3209 fflp_errors_enable(np, 0);
3210 nw64(H1POLY, 0);
3211 nw64(H2POLY, 0);
3212
3213 err = tcam_flush_all(np);
3214 if (err) {
3215 netif_printk(np, probe, KERN_DEBUG, np->dev,
3216 "tcam_flush_all failed, err=%d\n", err);
3217 goto out;
3218 }
3219 if (np->parent->plat_type != PLAT_TYPE_NIU) {
3220 err = fflp_hash_clear(np);
3221 if (err) {
3222 netif_printk(np, probe, KERN_DEBUG, np->dev,
3223 "fflp_hash_clear failed, err=%d\n",
3224 err);
3225 goto out;
3226 }
3227 }
3228
3229 vlan_tbl_clear(np);
3230
3231 parent->flags |= PARENT_FLGS_CLS_HWINIT;
3232 }
3233out:
3234 niu_unlock_parent(np, flags);
3235 return err;
3236}
3237
3238static int niu_set_flow_key(struct niu *np, unsigned long class_code, u64 key)
3239{
3240 if (class_code < CLASS_CODE_USER_PROG1 ||
3241 class_code > CLASS_CODE_SCTP_IPV6)
3242 return -EINVAL;
3243
3244 nw64(FLOW_KEY(class_code - CLASS_CODE_USER_PROG1), key);
3245 return 0;
3246}
3247
3248static int niu_set_tcam_key(struct niu *np, unsigned long class_code, u64 key)
3249{
3250 if (class_code < CLASS_CODE_USER_PROG1 ||
3251 class_code > CLASS_CODE_SCTP_IPV6)
3252 return -EINVAL;
3253
3254 nw64(TCAM_KEY(class_code - CLASS_CODE_USER_PROG1), key);
3255 return 0;
3256}
3257
3258/* Entries for the ports are interleaved in the TCAM */
3259static u16 tcam_get_index(struct niu *np, u16 idx)
3260{
3261 /* One entry reserved for IP fragment rule */
3262 if (idx >= (np->clas.tcam_sz - 1))
3263 idx = 0;
3264 return np->clas.tcam_top + ((idx+1) * np->parent->num_ports);
3265}
3266
3267static u16 tcam_get_size(struct niu *np)
3268{
3269 /* One entry reserved for IP fragment rule */
3270 return np->clas.tcam_sz - 1;
3271}
3272
3273static u16 tcam_get_valid_entry_cnt(struct niu *np)
3274{
3275 /* One entry reserved for IP fragment rule */
3276 return np->clas.tcam_valid_entries - 1;
3277}
3278
3279static void niu_rx_skb_append(struct sk_buff *skb, struct page *page,
3280 u32 offset, u32 size, u32 truesize)
3281{
3282 skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags, page, offset, size);
3283
3284 skb->len += size;
3285 skb->data_len += size;
3286 skb->truesize += truesize;
3287}
3288
3289static unsigned int niu_hash_rxaddr(struct rx_ring_info *rp, u64 a)
3290{
3291 a >>= PAGE_SHIFT;
3292 a ^= (a >> ilog2(MAX_RBR_RING_SIZE));
3293
3294 return a & (MAX_RBR_RING_SIZE - 1);
3295}
3296
3297static struct page *niu_find_rxpage(struct rx_ring_info *rp, u64 addr,
3298 struct page ***link)
3299{
3300 unsigned int h = niu_hash_rxaddr(rp, addr);
3301 struct page *p, **pp;
3302
3303 addr &= PAGE_MASK;
3304 pp = &rp->rxhash[h];
3305 for (; (p = *pp) != NULL; pp = &niu_next_page(p)) {
3306 if (p->index == addr) {
3307 *link = pp;
3308 goto found;
3309 }
3310 }
3311 BUG();
3312
3313found:
3314 return p;
3315}
3316
3317static void niu_hash_page(struct rx_ring_info *rp, struct page *page, u64 base)
3318{
3319 unsigned int h = niu_hash_rxaddr(rp, base);
3320
3321 page->index = base;
3322 niu_next_page(page) = rp->rxhash[h];
3323 rp->rxhash[h] = page;
3324}
3325
3326static int niu_rbr_add_page(struct niu *np, struct rx_ring_info *rp,
3327 gfp_t mask, int start_index)
3328{
3329 struct page *page;
3330 u64 addr;
3331 int i;
3332
3333 page = alloc_page(mask);
3334 if (!page)
3335 return -ENOMEM;
3336
3337 addr = np->ops->map_page(np->device, page, 0,
3338 PAGE_SIZE, DMA_FROM_DEVICE);
3339 if (!addr) {
3340 __free_page(page);
3341 return -ENOMEM;
3342 }
3343
3344 niu_hash_page(rp, page, addr);
3345 if (rp->rbr_blocks_per_page > 1)
3346 page_ref_add(page, rp->rbr_blocks_per_page - 1);
3347
3348 for (i = 0; i < rp->rbr_blocks_per_page; i++) {
3349 __le32 *rbr = &rp->rbr[start_index + i];
3350
3351 *rbr = cpu_to_le32(addr >> RBR_DESCR_ADDR_SHIFT);
3352 addr += rp->rbr_block_size;
3353 }
3354
3355 return 0;
3356}
3357
3358static void niu_rbr_refill(struct niu *np, struct rx_ring_info *rp, gfp_t mask)
3359{
3360 int index = rp->rbr_index;
3361
3362 rp->rbr_pending++;
3363 if ((rp->rbr_pending % rp->rbr_blocks_per_page) == 0) {
3364 int err = niu_rbr_add_page(np, rp, mask, index);
3365
3366 if (unlikely(err)) {
3367 rp->rbr_pending--;
3368 return;
3369 }
3370
3371 rp->rbr_index += rp->rbr_blocks_per_page;
3372 BUG_ON(rp->rbr_index > rp->rbr_table_size);
3373 if (rp->rbr_index == rp->rbr_table_size)
3374 rp->rbr_index = 0;
3375
3376 if (rp->rbr_pending >= rp->rbr_kick_thresh) {
3377 nw64(RBR_KICK(rp->rx_channel), rp->rbr_pending);
3378 rp->rbr_pending = 0;
3379 }
3380 }
3381}
3382
3383static int niu_rx_pkt_ignore(struct niu *np, struct rx_ring_info *rp)
3384{
3385 unsigned int index = rp->rcr_index;
3386 int num_rcr = 0;
3387
3388 rp->rx_dropped++;
3389 while (1) {
3390 struct page *page, **link;
3391 u64 addr, val;
3392 u32 rcr_size;
3393
3394 num_rcr++;
3395
3396 val = le64_to_cpup(&rp->rcr[index]);
3397 addr = (val & RCR_ENTRY_PKT_BUF_ADDR) <<
3398 RCR_ENTRY_PKT_BUF_ADDR_SHIFT;
3399 page = niu_find_rxpage(rp, addr, &link);
3400
3401 rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >>
3402 RCR_ENTRY_PKTBUFSZ_SHIFT];
3403 if ((page->index + PAGE_SIZE) - rcr_size == addr) {
3404 *link = niu_next_page(page);
3405 np->ops->unmap_page(np->device, page->index,
3406 PAGE_SIZE, DMA_FROM_DEVICE);
3407 page->index = 0;
3408 niu_next_page(page) = NULL;
3409 __free_page(page);
3410 rp->rbr_refill_pending++;
3411 }
3412
3413 index = NEXT_RCR(rp, index);
3414 if (!(val & RCR_ENTRY_MULTI))
3415 break;
3416
3417 }
3418 rp->rcr_index = index;
3419
3420 return num_rcr;
3421}
3422
3423static int niu_process_rx_pkt(struct napi_struct *napi, struct niu *np,
3424 struct rx_ring_info *rp)
3425{
3426 unsigned int index = rp->rcr_index;
3427 struct rx_pkt_hdr1 *rh;
3428 struct sk_buff *skb;
3429 int len, num_rcr;
3430
3431 skb = netdev_alloc_skb(np->dev, RX_SKB_ALLOC_SIZE);
3432 if (unlikely(!skb))
3433 return niu_rx_pkt_ignore(np, rp);
3434
3435 num_rcr = 0;
3436 while (1) {
3437 struct page *page, **link;
3438 u32 rcr_size, append_size;
3439 u64 addr, val, off;
3440
3441 num_rcr++;
3442
3443 val = le64_to_cpup(&rp->rcr[index]);
3444
3445 len = (val & RCR_ENTRY_L2_LEN) >>
3446 RCR_ENTRY_L2_LEN_SHIFT;
3447 append_size = len + ETH_HLEN + ETH_FCS_LEN;
3448
3449 addr = (val & RCR_ENTRY_PKT_BUF_ADDR) <<
3450 RCR_ENTRY_PKT_BUF_ADDR_SHIFT;
3451 page = niu_find_rxpage(rp, addr, &link);
3452
3453 rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >>
3454 RCR_ENTRY_PKTBUFSZ_SHIFT];
3455
3456 off = addr & ~PAGE_MASK;
3457 if (num_rcr == 1) {
3458 int ptype;
3459
3460 ptype = (val >> RCR_ENTRY_PKT_TYPE_SHIFT);
3461 if ((ptype == RCR_PKT_TYPE_TCP ||
3462 ptype == RCR_PKT_TYPE_UDP) &&
3463 !(val & (RCR_ENTRY_NOPORT |
3464 RCR_ENTRY_ERROR)))
3465 skb->ip_summed = CHECKSUM_UNNECESSARY;
3466 else
3467 skb_checksum_none_assert(skb);
3468 } else if (!(val & RCR_ENTRY_MULTI))
3469 append_size = append_size - skb->len;
3470
3471 niu_rx_skb_append(skb, page, off, append_size, rcr_size);
3472 if ((page->index + rp->rbr_block_size) - rcr_size == addr) {
3473 *link = niu_next_page(page);
3474 np->ops->unmap_page(np->device, page->index,
3475 PAGE_SIZE, DMA_FROM_DEVICE);
3476 page->index = 0;
3477 niu_next_page(page) = NULL;
3478 rp->rbr_refill_pending++;
3479 } else
3480 get_page(page);
3481
3482 index = NEXT_RCR(rp, index);
3483 if (!(val & RCR_ENTRY_MULTI))
3484 break;
3485
3486 }
3487 rp->rcr_index = index;
3488
3489 len += sizeof(*rh);
3490 len = min_t(int, len, sizeof(*rh) + VLAN_ETH_HLEN);
3491 __pskb_pull_tail(skb, len);
3492
3493 rh = (struct rx_pkt_hdr1 *) skb->data;
3494 if (np->dev->features & NETIF_F_RXHASH)
3495 skb_set_hash(skb,
3496 ((u32)rh->hashval2_0 << 24 |
3497 (u32)rh->hashval2_1 << 16 |
3498 (u32)rh->hashval1_1 << 8 |
3499 (u32)rh->hashval1_2 << 0),
3500 PKT_HASH_TYPE_L3);
3501 skb_pull(skb, sizeof(*rh));
3502
3503 rp->rx_packets++;
3504 rp->rx_bytes += skb->len;
3505
3506 skb->protocol = eth_type_trans(skb, np->dev);
3507 skb_record_rx_queue(skb, rp->rx_channel);
3508 napi_gro_receive(napi, skb);
3509
3510 return num_rcr;
3511}
3512
3513static int niu_rbr_fill(struct niu *np, struct rx_ring_info *rp, gfp_t mask)
3514{
3515 int blocks_per_page = rp->rbr_blocks_per_page;
3516 int err, index = rp->rbr_index;
3517
3518 err = 0;
3519 while (index < (rp->rbr_table_size - blocks_per_page)) {
3520 err = niu_rbr_add_page(np, rp, mask, index);
3521 if (unlikely(err))
3522 break;
3523
3524 index += blocks_per_page;
3525 }
3526
3527 rp->rbr_index = index;
3528 return err;
3529}
3530
3531static void niu_rbr_free(struct niu *np, struct rx_ring_info *rp)
3532{
3533 int i;
3534
3535 for (i = 0; i < MAX_RBR_RING_SIZE; i++) {
3536 struct page *page;
3537
3538 page = rp->rxhash[i];
3539 while (page) {
3540 struct page *next = niu_next_page(page);
3541 u64 base = page->index;
3542
3543 np->ops->unmap_page(np->device, base, PAGE_SIZE,
3544 DMA_FROM_DEVICE);
3545 page->index = 0;
3546 niu_next_page(page) = NULL;
3547
3548 __free_page(page);
3549
3550 page = next;
3551 }
3552 }
3553
3554 for (i = 0; i < rp->rbr_table_size; i++)
3555 rp->rbr[i] = cpu_to_le32(0);
3556 rp->rbr_index = 0;
3557}
3558
3559static int release_tx_packet(struct niu *np, struct tx_ring_info *rp, int idx)
3560{
3561 struct tx_buff_info *tb = &rp->tx_buffs[idx];
3562 struct sk_buff *skb = tb->skb;
3563 struct tx_pkt_hdr *tp;
3564 u64 tx_flags;
3565 int i, len;
3566
3567 tp = (struct tx_pkt_hdr *) skb->data;
3568 tx_flags = le64_to_cpup(&tp->flags);
3569
3570 rp->tx_packets++;
3571 rp->tx_bytes += (((tx_flags & TXHDR_LEN) >> TXHDR_LEN_SHIFT) -
3572 ((tx_flags & TXHDR_PAD) / 2));
3573
3574 len = skb_headlen(skb);
3575 np->ops->unmap_single(np->device, tb->mapping,
3576 len, DMA_TO_DEVICE);
3577
3578 if (le64_to_cpu(rp->descr[idx]) & TX_DESC_MARK)
3579 rp->mark_pending--;
3580
3581 tb->skb = NULL;
3582 do {
3583 idx = NEXT_TX(rp, idx);
3584 len -= MAX_TX_DESC_LEN;
3585 } while (len > 0);
3586
3587 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
3588 tb = &rp->tx_buffs[idx];
3589 BUG_ON(tb->skb != NULL);
3590 np->ops->unmap_page(np->device, tb->mapping,
3591 skb_frag_size(&skb_shinfo(skb)->frags[i]),
3592 DMA_TO_DEVICE);
3593 idx = NEXT_TX(rp, idx);
3594 }
3595
3596 dev_kfree_skb(skb);
3597
3598 return idx;
3599}
3600
3601#define NIU_TX_WAKEUP_THRESH(rp) ((rp)->pending / 4)
3602
3603static void niu_tx_work(struct niu *np, struct tx_ring_info *rp)
3604{
3605 struct netdev_queue *txq;
3606 u16 pkt_cnt, tmp;
3607 int cons, index;
3608 u64 cs;
3609
3610 index = (rp - np->tx_rings);
3611 txq = netdev_get_tx_queue(np->dev, index);
3612
3613 cs = rp->tx_cs;
3614 if (unlikely(!(cs & (TX_CS_MK | TX_CS_MMK))))
3615 goto out;
3616
3617 tmp = pkt_cnt = (cs & TX_CS_PKT_CNT) >> TX_CS_PKT_CNT_SHIFT;
3618 pkt_cnt = (pkt_cnt - rp->last_pkt_cnt) &
3619 (TX_CS_PKT_CNT >> TX_CS_PKT_CNT_SHIFT);
3620
3621 rp->last_pkt_cnt = tmp;
3622
3623 cons = rp->cons;
3624
3625 netif_printk(np, tx_done, KERN_DEBUG, np->dev,
3626 "%s() pkt_cnt[%u] cons[%d]\n", __func__, pkt_cnt, cons);
3627
3628 while (pkt_cnt--)
3629 cons = release_tx_packet(np, rp, cons);
3630
3631 rp->cons = cons;
3632 smp_mb();
3633
3634out:
3635 if (unlikely(netif_tx_queue_stopped(txq) &&
3636 (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))) {
3637 __netif_tx_lock(txq, smp_processor_id());
3638 if (netif_tx_queue_stopped(txq) &&
3639 (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))
3640 netif_tx_wake_queue(txq);
3641 __netif_tx_unlock(txq);
3642 }
3643}
3644
3645static inline void niu_sync_rx_discard_stats(struct niu *np,
3646 struct rx_ring_info *rp,
3647 const int limit)
3648{
3649 /* This elaborate scheme is needed for reading the RX discard
3650 * counters, as they are only 16-bit and can overflow quickly,
3651 * and because the overflow indication bit is not usable as
3652 * the counter value does not wrap, but remains at max value
3653 * 0xFFFF.
3654 *
3655 * In theory and in practice counters can be lost in between
3656 * reading nr64() and clearing the counter nw64(). For this
3657 * reason, the number of counter clearings nw64() is
3658 * limited/reduced though the limit parameter.
3659 */
3660 int rx_channel = rp->rx_channel;
3661 u32 misc, wred;
3662
3663 /* RXMISC (Receive Miscellaneous Discard Count), covers the
3664 * following discard events: IPP (Input Port Process),
3665 * FFLP/TCAM, Full RCR (Receive Completion Ring) RBR (Receive
3666 * Block Ring) prefetch buffer is empty.
3667 */
3668 misc = nr64(RXMISC(rx_channel));
3669 if (unlikely((misc & RXMISC_COUNT) > limit)) {
3670 nw64(RXMISC(rx_channel), 0);
3671 rp->rx_errors += misc & RXMISC_COUNT;
3672
3673 if (unlikely(misc & RXMISC_OFLOW))
3674 dev_err(np->device, "rx-%d: Counter overflow RXMISC discard\n",
3675 rx_channel);
3676
3677 netif_printk(np, rx_err, KERN_DEBUG, np->dev,
3678 "rx-%d: MISC drop=%u over=%u\n",
3679 rx_channel, misc, misc-limit);
3680 }
3681
3682 /* WRED (Weighted Random Early Discard) by hardware */
3683 wred = nr64(RED_DIS_CNT(rx_channel));
3684 if (unlikely((wred & RED_DIS_CNT_COUNT) > limit)) {
3685 nw64(RED_DIS_CNT(rx_channel), 0);
3686 rp->rx_dropped += wred & RED_DIS_CNT_COUNT;
3687
3688 if (unlikely(wred & RED_DIS_CNT_OFLOW))
3689 dev_err(np->device, "rx-%d: Counter overflow WRED discard\n", rx_channel);
3690
3691 netif_printk(np, rx_err, KERN_DEBUG, np->dev,
3692 "rx-%d: WRED drop=%u over=%u\n",
3693 rx_channel, wred, wred-limit);
3694 }
3695}
3696
3697static int niu_rx_work(struct napi_struct *napi, struct niu *np,
3698 struct rx_ring_info *rp, int budget)
3699{
3700 int qlen, rcr_done = 0, work_done = 0;
3701 struct rxdma_mailbox *mbox = rp->mbox;
3702 u64 stat;
3703
3704#if 1
3705 stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel));
3706 qlen = nr64(RCRSTAT_A(rp->rx_channel)) & RCRSTAT_A_QLEN;
3707#else
3708 stat = le64_to_cpup(&mbox->rx_dma_ctl_stat);
3709 qlen = (le64_to_cpup(&mbox->rcrstat_a) & RCRSTAT_A_QLEN);
3710#endif
3711 mbox->rx_dma_ctl_stat = 0;
3712 mbox->rcrstat_a = 0;
3713
3714 netif_printk(np, rx_status, KERN_DEBUG, np->dev,
3715 "%s(chan[%d]), stat[%llx] qlen=%d\n",
3716 __func__, rp->rx_channel, (unsigned long long)stat, qlen);
3717
3718 rcr_done = work_done = 0;
3719 qlen = min(qlen, budget);
3720 while (work_done < qlen) {
3721 rcr_done += niu_process_rx_pkt(napi, np, rp);
3722 work_done++;
3723 }
3724
3725 if (rp->rbr_refill_pending >= rp->rbr_kick_thresh) {
3726 unsigned int i;
3727
3728 for (i = 0; i < rp->rbr_refill_pending; i++)
3729 niu_rbr_refill(np, rp, GFP_ATOMIC);
3730 rp->rbr_refill_pending = 0;
3731 }
3732
3733 stat = (RX_DMA_CTL_STAT_MEX |
3734 ((u64)work_done << RX_DMA_CTL_STAT_PKTREAD_SHIFT) |
3735 ((u64)rcr_done << RX_DMA_CTL_STAT_PTRREAD_SHIFT));
3736
3737 nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat);
3738
3739 /* Only sync discards stats when qlen indicate potential for drops */
3740 if (qlen > 10)
3741 niu_sync_rx_discard_stats(np, rp, 0x7FFF);
3742
3743 return work_done;
3744}
3745
3746static int niu_poll_core(struct niu *np, struct niu_ldg *lp, int budget)
3747{
3748 u64 v0 = lp->v0;
3749 u32 tx_vec = (v0 >> 32);
3750 u32 rx_vec = (v0 & 0xffffffff);
3751 int i, work_done = 0;
3752
3753 netif_printk(np, intr, KERN_DEBUG, np->dev,
3754 "%s() v0[%016llx]\n", __func__, (unsigned long long)v0);
3755
3756 for (i = 0; i < np->num_tx_rings; i++) {
3757 struct tx_ring_info *rp = &np->tx_rings[i];
3758 if (tx_vec & (1 << rp->tx_channel))
3759 niu_tx_work(np, rp);
3760 nw64(LD_IM0(LDN_TXDMA(rp->tx_channel)), 0);
3761 }
3762
3763 for (i = 0; i < np->num_rx_rings; i++) {
3764 struct rx_ring_info *rp = &np->rx_rings[i];
3765
3766 if (rx_vec & (1 << rp->rx_channel)) {
3767 int this_work_done;
3768
3769 this_work_done = niu_rx_work(&lp->napi, np, rp,
3770 budget);
3771
3772 budget -= this_work_done;
3773 work_done += this_work_done;
3774 }
3775 nw64(LD_IM0(LDN_RXDMA(rp->rx_channel)), 0);
3776 }
3777
3778 return work_done;
3779}
3780
3781static int niu_poll(struct napi_struct *napi, int budget)
3782{
3783 struct niu_ldg *lp = container_of(napi, struct niu_ldg, napi);
3784 struct niu *np = lp->np;
3785 int work_done;
3786
3787 work_done = niu_poll_core(np, lp, budget);
3788
3789 if (work_done < budget) {
3790 napi_complete_done(napi, work_done);
3791 niu_ldg_rearm(np, lp, 1);
3792 }
3793 return work_done;
3794}
3795
3796static void niu_log_rxchan_errors(struct niu *np, struct rx_ring_info *rp,
3797 u64 stat)
3798{
3799 netdev_err(np->dev, "RX channel %u errors ( ", rp->rx_channel);
3800
3801 if (stat & RX_DMA_CTL_STAT_RBR_TMOUT)
3802 pr_cont("RBR_TMOUT ");
3803 if (stat & RX_DMA_CTL_STAT_RSP_CNT_ERR)
3804 pr_cont("RSP_CNT ");
3805 if (stat & RX_DMA_CTL_STAT_BYTE_EN_BUS)
3806 pr_cont("BYTE_EN_BUS ");
3807 if (stat & RX_DMA_CTL_STAT_RSP_DAT_ERR)
3808 pr_cont("RSP_DAT ");
3809 if (stat & RX_DMA_CTL_STAT_RCR_ACK_ERR)
3810 pr_cont("RCR_ACK ");
3811 if (stat & RX_DMA_CTL_STAT_RCR_SHA_PAR)
3812 pr_cont("RCR_SHA_PAR ");
3813 if (stat & RX_DMA_CTL_STAT_RBR_PRE_PAR)
3814 pr_cont("RBR_PRE_PAR ");
3815 if (stat & RX_DMA_CTL_STAT_CONFIG_ERR)
3816 pr_cont("CONFIG ");
3817 if (stat & RX_DMA_CTL_STAT_RCRINCON)
3818 pr_cont("RCRINCON ");
3819 if (stat & RX_DMA_CTL_STAT_RCRFULL)
3820 pr_cont("RCRFULL ");
3821 if (stat & RX_DMA_CTL_STAT_RBRFULL)
3822 pr_cont("RBRFULL ");
3823 if (stat & RX_DMA_CTL_STAT_RBRLOGPAGE)
3824 pr_cont("RBRLOGPAGE ");
3825 if (stat & RX_DMA_CTL_STAT_CFIGLOGPAGE)
3826 pr_cont("CFIGLOGPAGE ");
3827 if (stat & RX_DMA_CTL_STAT_DC_FIFO_ERR)
3828 pr_cont("DC_FIDO ");
3829
3830 pr_cont(")\n");
3831}
3832
3833static int niu_rx_error(struct niu *np, struct rx_ring_info *rp)
3834{
3835 u64 stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel));
3836 int err = 0;
3837
3838
3839 if (stat & (RX_DMA_CTL_STAT_CHAN_FATAL |
3840 RX_DMA_CTL_STAT_PORT_FATAL))
3841 err = -EINVAL;
3842
3843 if (err) {
3844 netdev_err(np->dev, "RX channel %u error, stat[%llx]\n",
3845 rp->rx_channel,
3846 (unsigned long long) stat);
3847
3848 niu_log_rxchan_errors(np, rp, stat);
3849 }
3850
3851 nw64(RX_DMA_CTL_STAT(rp->rx_channel),
3852 stat & RX_DMA_CTL_WRITE_CLEAR_ERRS);
3853
3854 return err;
3855}
3856
3857static void niu_log_txchan_errors(struct niu *np, struct tx_ring_info *rp,
3858 u64 cs)
3859{
3860 netdev_err(np->dev, "TX channel %u errors ( ", rp->tx_channel);
3861
3862 if (cs & TX_CS_MBOX_ERR)
3863 pr_cont("MBOX ");
3864 if (cs & TX_CS_PKT_SIZE_ERR)
3865 pr_cont("PKT_SIZE ");
3866 if (cs & TX_CS_TX_RING_OFLOW)
3867 pr_cont("TX_RING_OFLOW ");
3868 if (cs & TX_CS_PREF_BUF_PAR_ERR)
3869 pr_cont("PREF_BUF_PAR ");
3870 if (cs & TX_CS_NACK_PREF)
3871 pr_cont("NACK_PREF ");
3872 if (cs & TX_CS_NACK_PKT_RD)
3873 pr_cont("NACK_PKT_RD ");
3874 if (cs & TX_CS_CONF_PART_ERR)
3875 pr_cont("CONF_PART ");
3876 if (cs & TX_CS_PKT_PRT_ERR)
3877 pr_cont("PKT_PTR ");
3878
3879 pr_cont(")\n");
3880}
3881
3882static int niu_tx_error(struct niu *np, struct tx_ring_info *rp)
3883{
3884 u64 cs, logh, logl;
3885
3886 cs = nr64(TX_CS(rp->tx_channel));
3887 logh = nr64(TX_RNG_ERR_LOGH(rp->tx_channel));
3888 logl = nr64(TX_RNG_ERR_LOGL(rp->tx_channel));
3889
3890 netdev_err(np->dev, "TX channel %u error, cs[%llx] logh[%llx] logl[%llx]\n",
3891 rp->tx_channel,
3892 (unsigned long long)cs,
3893 (unsigned long long)logh,
3894 (unsigned long long)logl);
3895
3896 niu_log_txchan_errors(np, rp, cs);
3897
3898 return -ENODEV;
3899}
3900
3901static int niu_mif_interrupt(struct niu *np)
3902{
3903 u64 mif_status = nr64(MIF_STATUS);
3904 int phy_mdint = 0;
3905
3906 if (np->flags & NIU_FLAGS_XMAC) {
3907 u64 xrxmac_stat = nr64_mac(XRXMAC_STATUS);
3908
3909 if (xrxmac_stat & XRXMAC_STATUS_PHY_MDINT)
3910 phy_mdint = 1;
3911 }
3912
3913 netdev_err(np->dev, "MIF interrupt, stat[%llx] phy_mdint(%d)\n",
3914 (unsigned long long)mif_status, phy_mdint);
3915
3916 return -ENODEV;
3917}
3918
3919static void niu_xmac_interrupt(struct niu *np)
3920{
3921 struct niu_xmac_stats *mp = &np->mac_stats.xmac;
3922 u64 val;
3923
3924 val = nr64_mac(XTXMAC_STATUS);
3925 if (val & XTXMAC_STATUS_FRAME_CNT_EXP)
3926 mp->tx_frames += TXMAC_FRM_CNT_COUNT;
3927 if (val & XTXMAC_STATUS_BYTE_CNT_EXP)
3928 mp->tx_bytes += TXMAC_BYTE_CNT_COUNT;
3929 if (val & XTXMAC_STATUS_TXFIFO_XFR_ERR)
3930 mp->tx_fifo_errors++;
3931 if (val & XTXMAC_STATUS_TXMAC_OFLOW)
3932 mp->tx_overflow_errors++;
3933 if (val & XTXMAC_STATUS_MAX_PSIZE_ERR)
3934 mp->tx_max_pkt_size_errors++;
3935 if (val & XTXMAC_STATUS_TXMAC_UFLOW)
3936 mp->tx_underflow_errors++;
3937
3938 val = nr64_mac(XRXMAC_STATUS);
3939 if (val & XRXMAC_STATUS_LCL_FLT_STATUS)
3940 mp->rx_local_faults++;
3941 if (val & XRXMAC_STATUS_RFLT_DET)
3942 mp->rx_remote_faults++;
3943 if (val & XRXMAC_STATUS_LFLT_CNT_EXP)
3944 mp->rx_link_faults += LINK_FAULT_CNT_COUNT;
3945 if (val & XRXMAC_STATUS_ALIGNERR_CNT_EXP)
3946 mp->rx_align_errors += RXMAC_ALIGN_ERR_CNT_COUNT;
3947 if (val & XRXMAC_STATUS_RXFRAG_CNT_EXP)
3948 mp->rx_frags += RXMAC_FRAG_CNT_COUNT;
3949 if (val & XRXMAC_STATUS_RXMULTF_CNT_EXP)
3950 mp->rx_mcasts += RXMAC_MC_FRM_CNT_COUNT;
3951 if (val & XRXMAC_STATUS_RXBCAST_CNT_EXP)
3952 mp->rx_bcasts += RXMAC_BC_FRM_CNT_COUNT;
3953 if (val & XRXMAC_STATUS_RXHIST1_CNT_EXP)
3954 mp->rx_hist_cnt1 += RXMAC_HIST_CNT1_COUNT;
3955 if (val & XRXMAC_STATUS_RXHIST2_CNT_EXP)
3956 mp->rx_hist_cnt2 += RXMAC_HIST_CNT2_COUNT;
3957 if (val & XRXMAC_STATUS_RXHIST3_CNT_EXP)
3958 mp->rx_hist_cnt3 += RXMAC_HIST_CNT3_COUNT;
3959 if (val & XRXMAC_STATUS_RXHIST4_CNT_EXP)
3960 mp->rx_hist_cnt4 += RXMAC_HIST_CNT4_COUNT;
3961 if (val & XRXMAC_STATUS_RXHIST5_CNT_EXP)
3962 mp->rx_hist_cnt5 += RXMAC_HIST_CNT5_COUNT;
3963 if (val & XRXMAC_STATUS_RXHIST6_CNT_EXP)
3964 mp->rx_hist_cnt6 += RXMAC_HIST_CNT6_COUNT;
3965 if (val & XRXMAC_STATUS_RXHIST7_CNT_EXP)
3966 mp->rx_hist_cnt7 += RXMAC_HIST_CNT7_COUNT;
3967 if (val & XRXMAC_STATUS_RXOCTET_CNT_EXP)
3968 mp->rx_octets += RXMAC_BT_CNT_COUNT;
3969 if (val & XRXMAC_STATUS_CVIOLERR_CNT_EXP)
3970 mp->rx_code_violations += RXMAC_CD_VIO_CNT_COUNT;
3971 if (val & XRXMAC_STATUS_LENERR_CNT_EXP)
3972 mp->rx_len_errors += RXMAC_MPSZER_CNT_COUNT;
3973 if (val & XRXMAC_STATUS_CRCERR_CNT_EXP)
3974 mp->rx_crc_errors += RXMAC_CRC_ER_CNT_COUNT;
3975 if (val & XRXMAC_STATUS_RXUFLOW)
3976 mp->rx_underflows++;
3977 if (val & XRXMAC_STATUS_RXOFLOW)
3978 mp->rx_overflows++;
3979
3980 val = nr64_mac(XMAC_FC_STAT);
3981 if (val & XMAC_FC_STAT_TX_MAC_NPAUSE)
3982 mp->pause_off_state++;
3983 if (val & XMAC_FC_STAT_TX_MAC_PAUSE)
3984 mp->pause_on_state++;
3985 if (val & XMAC_FC_STAT_RX_MAC_RPAUSE)
3986 mp->pause_received++;
3987}
3988
3989static void niu_bmac_interrupt(struct niu *np)
3990{
3991 struct niu_bmac_stats *mp = &np->mac_stats.bmac;
3992 u64 val;
3993
3994 val = nr64_mac(BTXMAC_STATUS);
3995 if (val & BTXMAC_STATUS_UNDERRUN)
3996 mp->tx_underflow_errors++;
3997 if (val & BTXMAC_STATUS_MAX_PKT_ERR)
3998 mp->tx_max_pkt_size_errors++;
3999 if (val & BTXMAC_STATUS_BYTE_CNT_EXP)
4000 mp->tx_bytes += BTXMAC_BYTE_CNT_COUNT;
4001 if (val & BTXMAC_STATUS_FRAME_CNT_EXP)
4002 mp->tx_frames += BTXMAC_FRM_CNT_COUNT;
4003
4004 val = nr64_mac(BRXMAC_STATUS);
4005 if (val & BRXMAC_STATUS_OVERFLOW)
4006 mp->rx_overflows++;
4007 if (val & BRXMAC_STATUS_FRAME_CNT_EXP)
4008 mp->rx_frames += BRXMAC_FRAME_CNT_COUNT;
4009 if (val & BRXMAC_STATUS_ALIGN_ERR_EXP)
4010 mp->rx_align_errors += BRXMAC_ALIGN_ERR_CNT_COUNT;
4011 if (val & BRXMAC_STATUS_CRC_ERR_EXP)
4012 mp->rx_crc_errors += BRXMAC_ALIGN_ERR_CNT_COUNT;
4013 if (val & BRXMAC_STATUS_LEN_ERR_EXP)
4014 mp->rx_len_errors += BRXMAC_CODE_VIOL_ERR_CNT_COUNT;
4015
4016 val = nr64_mac(BMAC_CTRL_STATUS);
4017 if (val & BMAC_CTRL_STATUS_NOPAUSE)
4018 mp->pause_off_state++;
4019 if (val & BMAC_CTRL_STATUS_PAUSE)
4020 mp->pause_on_state++;
4021 if (val & BMAC_CTRL_STATUS_PAUSE_RECV)
4022 mp->pause_received++;
4023}
4024
4025static int niu_mac_interrupt(struct niu *np)
4026{
4027 if (np->flags & NIU_FLAGS_XMAC)
4028 niu_xmac_interrupt(np);
4029 else
4030 niu_bmac_interrupt(np);
4031
4032 return 0;
4033}
4034
4035static void niu_log_device_error(struct niu *np, u64 stat)
4036{
4037 netdev_err(np->dev, "Core device errors ( ");
4038
4039 if (stat & SYS_ERR_MASK_META2)
4040 pr_cont("META2 ");
4041 if (stat & SYS_ERR_MASK_META1)
4042 pr_cont("META1 ");
4043 if (stat & SYS_ERR_MASK_PEU)
4044 pr_cont("PEU ");
4045 if (stat & SYS_ERR_MASK_TXC)
4046 pr_cont("TXC ");
4047 if (stat & SYS_ERR_MASK_RDMC)
4048 pr_cont("RDMC ");
4049 if (stat & SYS_ERR_MASK_TDMC)
4050 pr_cont("TDMC ");
4051 if (stat & SYS_ERR_MASK_ZCP)
4052 pr_cont("ZCP ");
4053 if (stat & SYS_ERR_MASK_FFLP)
4054 pr_cont("FFLP ");
4055 if (stat & SYS_ERR_MASK_IPP)
4056 pr_cont("IPP ");
4057 if (stat & SYS_ERR_MASK_MAC)
4058 pr_cont("MAC ");
4059 if (stat & SYS_ERR_MASK_SMX)
4060 pr_cont("SMX ");
4061
4062 pr_cont(")\n");
4063}
4064
4065static int niu_device_error(struct niu *np)
4066{
4067 u64 stat = nr64(SYS_ERR_STAT);
4068
4069 netdev_err(np->dev, "Core device error, stat[%llx]\n",
4070 (unsigned long long)stat);
4071
4072 niu_log_device_error(np, stat);
4073
4074 return -ENODEV;
4075}
4076
4077static int niu_slowpath_interrupt(struct niu *np, struct niu_ldg *lp,
4078 u64 v0, u64 v1, u64 v2)
4079{
4080
4081 int i, err = 0;
4082
4083 lp->v0 = v0;
4084 lp->v1 = v1;
4085 lp->v2 = v2;
4086
4087 if (v1 & 0x00000000ffffffffULL) {
4088 u32 rx_vec = (v1 & 0xffffffff);
4089
4090 for (i = 0; i < np->num_rx_rings; i++) {
4091 struct rx_ring_info *rp = &np->rx_rings[i];
4092
4093 if (rx_vec & (1 << rp->rx_channel)) {
4094 int r = niu_rx_error(np, rp);
4095 if (r) {
4096 err = r;
4097 } else {
4098 if (!v0)
4099 nw64(RX_DMA_CTL_STAT(rp->rx_channel),
4100 RX_DMA_CTL_STAT_MEX);
4101 }
4102 }
4103 }
4104 }
4105 if (v1 & 0x7fffffff00000000ULL) {
4106 u32 tx_vec = (v1 >> 32) & 0x7fffffff;
4107
4108 for (i = 0; i < np->num_tx_rings; i++) {
4109 struct tx_ring_info *rp = &np->tx_rings[i];
4110
4111 if (tx_vec & (1 << rp->tx_channel)) {
4112 int r = niu_tx_error(np, rp);
4113 if (r)
4114 err = r;
4115 }
4116 }
4117 }
4118 if ((v0 | v1) & 0x8000000000000000ULL) {
4119 int r = niu_mif_interrupt(np);
4120 if (r)
4121 err = r;
4122 }
4123 if (v2) {
4124 if (v2 & 0x01ef) {
4125 int r = niu_mac_interrupt(np);
4126 if (r)
4127 err = r;
4128 }
4129 if (v2 & 0x0210) {
4130 int r = niu_device_error(np);
4131 if (r)
4132 err = r;
4133 }
4134 }
4135
4136 if (err)
4137 niu_enable_interrupts(np, 0);
4138
4139 return err;
4140}
4141
4142static void niu_rxchan_intr(struct niu *np, struct rx_ring_info *rp,
4143 int ldn)
4144{
4145 struct rxdma_mailbox *mbox = rp->mbox;
4146 u64 stat_write, stat = le64_to_cpup(&mbox->rx_dma_ctl_stat);
4147
4148 stat_write = (RX_DMA_CTL_STAT_RCRTHRES |
4149 RX_DMA_CTL_STAT_RCRTO);
4150 nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat_write);
4151
4152 netif_printk(np, intr, KERN_DEBUG, np->dev,
4153 "%s() stat[%llx]\n", __func__, (unsigned long long)stat);
4154}
4155
4156static void niu_txchan_intr(struct niu *np, struct tx_ring_info *rp,
4157 int ldn)
4158{
4159 rp->tx_cs = nr64(TX_CS(rp->tx_channel));
4160
4161 netif_printk(np, intr, KERN_DEBUG, np->dev,
4162 "%s() cs[%llx]\n", __func__, (unsigned long long)rp->tx_cs);
4163}
4164
4165static void __niu_fastpath_interrupt(struct niu *np, int ldg, u64 v0)
4166{
4167 struct niu_parent *parent = np->parent;
4168 u32 rx_vec, tx_vec;
4169 int i;
4170
4171 tx_vec = (v0 >> 32);
4172 rx_vec = (v0 & 0xffffffff);
4173
4174 for (i = 0; i < np->num_rx_rings; i++) {
4175 struct rx_ring_info *rp = &np->rx_rings[i];
4176 int ldn = LDN_RXDMA(rp->rx_channel);
4177
4178 if (parent->ldg_map[ldn] != ldg)
4179 continue;
4180
4181 nw64(LD_IM0(ldn), LD_IM0_MASK);
4182 if (rx_vec & (1 << rp->rx_channel))
4183 niu_rxchan_intr(np, rp, ldn);
4184 }
4185
4186 for (i = 0; i < np->num_tx_rings; i++) {
4187 struct tx_ring_info *rp = &np->tx_rings[i];
4188 int ldn = LDN_TXDMA(rp->tx_channel);
4189
4190 if (parent->ldg_map[ldn] != ldg)
4191 continue;
4192
4193 nw64(LD_IM0(ldn), LD_IM0_MASK);
4194 if (tx_vec & (1 << rp->tx_channel))
4195 niu_txchan_intr(np, rp, ldn);
4196 }
4197}
4198
4199static void niu_schedule_napi(struct niu *np, struct niu_ldg *lp,
4200 u64 v0, u64 v1, u64 v2)
4201{
4202 if (likely(napi_schedule_prep(&lp->napi))) {
4203 lp->v0 = v0;
4204 lp->v1 = v1;
4205 lp->v2 = v2;
4206 __niu_fastpath_interrupt(np, lp->ldg_num, v0);
4207 __napi_schedule(&lp->napi);
4208 }
4209}
4210
4211static irqreturn_t niu_interrupt(int irq, void *dev_id)
4212{
4213 struct niu_ldg *lp = dev_id;
4214 struct niu *np = lp->np;
4215 int ldg = lp->ldg_num;
4216 unsigned long flags;
4217 u64 v0, v1, v2;
4218
4219 if (netif_msg_intr(np))
4220 printk(KERN_DEBUG KBUILD_MODNAME ": " "%s() ldg[%p](%d)",
4221 __func__, lp, ldg);
4222
4223 spin_lock_irqsave(&np->lock, flags);
4224
4225 v0 = nr64(LDSV0(ldg));
4226 v1 = nr64(LDSV1(ldg));
4227 v2 = nr64(LDSV2(ldg));
4228
4229 if (netif_msg_intr(np))
4230 pr_cont(" v0[%llx] v1[%llx] v2[%llx]\n",
4231 (unsigned long long) v0,
4232 (unsigned long long) v1,
4233 (unsigned long long) v2);
4234
4235 if (unlikely(!v0 && !v1 && !v2)) {
4236 spin_unlock_irqrestore(&np->lock, flags);
4237 return IRQ_NONE;
4238 }
4239
4240 if (unlikely((v0 & ((u64)1 << LDN_MIF)) || v1 || v2)) {
4241 int err = niu_slowpath_interrupt(np, lp, v0, v1, v2);
4242 if (err)
4243 goto out;
4244 }
4245 if (likely(v0 & ~((u64)1 << LDN_MIF)))
4246 niu_schedule_napi(np, lp, v0, v1, v2);
4247 else
4248 niu_ldg_rearm(np, lp, 1);
4249out:
4250 spin_unlock_irqrestore(&np->lock, flags);
4251
4252 return IRQ_HANDLED;
4253}
4254
4255static void niu_free_rx_ring_info(struct niu *np, struct rx_ring_info *rp)
4256{
4257 if (rp->mbox) {
4258 np->ops->free_coherent(np->device,
4259 sizeof(struct rxdma_mailbox),
4260 rp->mbox, rp->mbox_dma);
4261 rp->mbox = NULL;
4262 }
4263 if (rp->rcr) {
4264 np->ops->free_coherent(np->device,
4265 MAX_RCR_RING_SIZE * sizeof(__le64),
4266 rp->rcr, rp->rcr_dma);
4267 rp->rcr = NULL;
4268 rp->rcr_table_size = 0;
4269 rp->rcr_index = 0;
4270 }
4271 if (rp->rbr) {
4272 niu_rbr_free(np, rp);
4273
4274 np->ops->free_coherent(np->device,
4275 MAX_RBR_RING_SIZE * sizeof(__le32),
4276 rp->rbr, rp->rbr_dma);
4277 rp->rbr = NULL;
4278 rp->rbr_table_size = 0;
4279 rp->rbr_index = 0;
4280 }
4281 kfree(rp->rxhash);
4282 rp->rxhash = NULL;
4283}
4284
4285static void niu_free_tx_ring_info(struct niu *np, struct tx_ring_info *rp)
4286{
4287 if (rp->mbox) {
4288 np->ops->free_coherent(np->device,
4289 sizeof(struct txdma_mailbox),
4290 rp->mbox, rp->mbox_dma);
4291 rp->mbox = NULL;
4292 }
4293 if (rp->descr) {
4294 int i;
4295
4296 for (i = 0; i < MAX_TX_RING_SIZE; i++) {
4297 if (rp->tx_buffs[i].skb)
4298 (void) release_tx_packet(np, rp, i);
4299 }
4300
4301 np->ops->free_coherent(np->device,
4302 MAX_TX_RING_SIZE * sizeof(__le64),
4303 rp->descr, rp->descr_dma);
4304 rp->descr = NULL;
4305 rp->pending = 0;
4306 rp->prod = 0;
4307 rp->cons = 0;
4308 rp->wrap_bit = 0;
4309 }
4310}
4311
4312static void niu_free_channels(struct niu *np)
4313{
4314 int i;
4315
4316 if (np->rx_rings) {
4317 for (i = 0; i < np->num_rx_rings; i++) {
4318 struct rx_ring_info *rp = &np->rx_rings[i];
4319
4320 niu_free_rx_ring_info(np, rp);
4321 }
4322 kfree(np->rx_rings);
4323 np->rx_rings = NULL;
4324 np->num_rx_rings = 0;
4325 }
4326
4327 if (np->tx_rings) {
4328 for (i = 0; i < np->num_tx_rings; i++) {
4329 struct tx_ring_info *rp = &np->tx_rings[i];
4330
4331 niu_free_tx_ring_info(np, rp);
4332 }
4333 kfree(np->tx_rings);
4334 np->tx_rings = NULL;
4335 np->num_tx_rings = 0;
4336 }
4337}
4338
4339static int niu_alloc_rx_ring_info(struct niu *np,
4340 struct rx_ring_info *rp)
4341{
4342 BUILD_BUG_ON(sizeof(struct rxdma_mailbox) != 64);
4343
4344 rp->rxhash = kcalloc(MAX_RBR_RING_SIZE, sizeof(struct page *),
4345 GFP_KERNEL);
4346 if (!rp->rxhash)
4347 return -ENOMEM;
4348
4349 rp->mbox = np->ops->alloc_coherent(np->device,
4350 sizeof(struct rxdma_mailbox),
4351 &rp->mbox_dma, GFP_KERNEL);
4352 if (!rp->mbox)
4353 return -ENOMEM;
4354 if ((unsigned long)rp->mbox & (64UL - 1)) {
4355 netdev_err(np->dev, "Coherent alloc gives misaligned RXDMA mailbox %p\n",
4356 rp->mbox);
4357 return -EINVAL;
4358 }
4359
4360 rp->rcr = np->ops->alloc_coherent(np->device,
4361 MAX_RCR_RING_SIZE * sizeof(__le64),
4362 &rp->rcr_dma, GFP_KERNEL);
4363 if (!rp->rcr)
4364 return -ENOMEM;
4365 if ((unsigned long)rp->rcr & (64UL - 1)) {
4366 netdev_err(np->dev, "Coherent alloc gives misaligned RXDMA RCR table %p\n",
4367 rp->rcr);
4368 return -EINVAL;
4369 }
4370 rp->rcr_table_size = MAX_RCR_RING_SIZE;
4371 rp->rcr_index = 0;
4372
4373 rp->rbr = np->ops->alloc_coherent(np->device,
4374 MAX_RBR_RING_SIZE * sizeof(__le32),
4375 &rp->rbr_dma, GFP_KERNEL);
4376 if (!rp->rbr)
4377 return -ENOMEM;
4378 if ((unsigned long)rp->rbr & (64UL - 1)) {
4379 netdev_err(np->dev, "Coherent alloc gives misaligned RXDMA RBR table %p\n",
4380 rp->rbr);
4381 return -EINVAL;
4382 }
4383 rp->rbr_table_size = MAX_RBR_RING_SIZE;
4384 rp->rbr_index = 0;
4385 rp->rbr_pending = 0;
4386
4387 return 0;
4388}
4389
4390static void niu_set_max_burst(struct niu *np, struct tx_ring_info *rp)
4391{
4392 int mtu = np->dev->mtu;
4393
4394 /* These values are recommended by the HW designers for fair
4395 * utilization of DRR amongst the rings.
4396 */
4397 rp->max_burst = mtu + 32;
4398 if (rp->max_burst > 4096)
4399 rp->max_burst = 4096;
4400}
4401
4402static int niu_alloc_tx_ring_info(struct niu *np,
4403 struct tx_ring_info *rp)
4404{
4405 BUILD_BUG_ON(sizeof(struct txdma_mailbox) != 64);
4406
4407 rp->mbox = np->ops->alloc_coherent(np->device,
4408 sizeof(struct txdma_mailbox),
4409 &rp->mbox_dma, GFP_KERNEL);
4410 if (!rp->mbox)
4411 return -ENOMEM;
4412 if ((unsigned long)rp->mbox & (64UL - 1)) {
4413 netdev_err(np->dev, "Coherent alloc gives misaligned TXDMA mailbox %p\n",
4414 rp->mbox);
4415 return -EINVAL;
4416 }
4417
4418 rp->descr = np->ops->alloc_coherent(np->device,
4419 MAX_TX_RING_SIZE * sizeof(__le64),
4420 &rp->descr_dma, GFP_KERNEL);
4421 if (!rp->descr)
4422 return -ENOMEM;
4423 if ((unsigned long)rp->descr & (64UL - 1)) {
4424 netdev_err(np->dev, "Coherent alloc gives misaligned TXDMA descr table %p\n",
4425 rp->descr);
4426 return -EINVAL;
4427 }
4428
4429 rp->pending = MAX_TX_RING_SIZE;
4430 rp->prod = 0;
4431 rp->cons = 0;
4432 rp->wrap_bit = 0;
4433
4434 /* XXX make these configurable... XXX */
4435 rp->mark_freq = rp->pending / 4;
4436
4437 niu_set_max_burst(np, rp);
4438
4439 return 0;
4440}
4441
4442static void niu_size_rbr(struct niu *np, struct rx_ring_info *rp)
4443{
4444 u16 bss;
4445
4446 bss = min(PAGE_SHIFT, 15);
4447
4448 rp->rbr_block_size = 1 << bss;
4449 rp->rbr_blocks_per_page = 1 << (PAGE_SHIFT-bss);
4450
4451 rp->rbr_sizes[0] = 256;
4452 rp->rbr_sizes[1] = 1024;
4453 if (np->dev->mtu > ETH_DATA_LEN) {
4454 switch (PAGE_SIZE) {
4455 case 4 * 1024:
4456 rp->rbr_sizes[2] = 4096;
4457 break;
4458
4459 default:
4460 rp->rbr_sizes[2] = 8192;
4461 break;
4462 }
4463 } else {
4464 rp->rbr_sizes[2] = 2048;
4465 }
4466 rp->rbr_sizes[3] = rp->rbr_block_size;
4467}
4468
4469static int niu_alloc_channels(struct niu *np)
4470{
4471 struct niu_parent *parent = np->parent;
4472 int first_rx_channel, first_tx_channel;
4473 int num_rx_rings, num_tx_rings;
4474 struct rx_ring_info *rx_rings;
4475 struct tx_ring_info *tx_rings;
4476 int i, port, err;
4477
4478 port = np->port;
4479 first_rx_channel = first_tx_channel = 0;
4480 for (i = 0; i < port; i++) {
4481 first_rx_channel += parent->rxchan_per_port[i];
4482 first_tx_channel += parent->txchan_per_port[i];
4483 }
4484
4485 num_rx_rings = parent->rxchan_per_port[port];
4486 num_tx_rings = parent->txchan_per_port[port];
4487
4488 rx_rings = kcalloc(num_rx_rings, sizeof(struct rx_ring_info),
4489 GFP_KERNEL);
4490 err = -ENOMEM;
4491 if (!rx_rings)
4492 goto out_err;
4493
4494 np->num_rx_rings = num_rx_rings;
4495 smp_wmb();
4496 np->rx_rings = rx_rings;
4497
4498 netif_set_real_num_rx_queues(np->dev, num_rx_rings);
4499
4500 for (i = 0; i < np->num_rx_rings; i++) {
4501 struct rx_ring_info *rp = &np->rx_rings[i];
4502
4503 rp->np = np;
4504 rp->rx_channel = first_rx_channel + i;
4505
4506 err = niu_alloc_rx_ring_info(np, rp);
4507 if (err)
4508 goto out_err;
4509
4510 niu_size_rbr(np, rp);
4511
4512 /* XXX better defaults, configurable, etc... XXX */
4513 rp->nonsyn_window = 64;
4514 rp->nonsyn_threshold = rp->rcr_table_size - 64;
4515 rp->syn_window = 64;
4516 rp->syn_threshold = rp->rcr_table_size - 64;
4517 rp->rcr_pkt_threshold = 16;
4518 rp->rcr_timeout = 8;
4519 rp->rbr_kick_thresh = RBR_REFILL_MIN;
4520 if (rp->rbr_kick_thresh < rp->rbr_blocks_per_page)
4521 rp->rbr_kick_thresh = rp->rbr_blocks_per_page;
4522
4523 err = niu_rbr_fill(np, rp, GFP_KERNEL);
4524 if (err)
4525 goto out_err;
4526 }
4527
4528 tx_rings = kcalloc(num_tx_rings, sizeof(struct tx_ring_info),
4529 GFP_KERNEL);
4530 err = -ENOMEM;
4531 if (!tx_rings)
4532 goto out_err;
4533
4534 np->num_tx_rings = num_tx_rings;
4535 smp_wmb();
4536 np->tx_rings = tx_rings;
4537
4538 netif_set_real_num_tx_queues(np->dev, num_tx_rings);
4539
4540 for (i = 0; i < np->num_tx_rings; i++) {
4541 struct tx_ring_info *rp = &np->tx_rings[i];
4542
4543 rp->np = np;
4544 rp->tx_channel = first_tx_channel + i;
4545
4546 err = niu_alloc_tx_ring_info(np, rp);
4547 if (err)
4548 goto out_err;
4549 }
4550
4551 return 0;
4552
4553out_err:
4554 niu_free_channels(np);
4555 return err;
4556}
4557
4558static int niu_tx_cs_sng_poll(struct niu *np, int channel)
4559{
4560 int limit = 1000;
4561
4562 while (--limit > 0) {
4563 u64 val = nr64(TX_CS(channel));
4564 if (val & TX_CS_SNG_STATE)
4565 return 0;
4566 }
4567 return -ENODEV;
4568}
4569
4570static int niu_tx_channel_stop(struct niu *np, int channel)
4571{
4572 u64 val = nr64(TX_CS(channel));
4573
4574 val |= TX_CS_STOP_N_GO;
4575 nw64(TX_CS(channel), val);
4576
4577 return niu_tx_cs_sng_poll(np, channel);
4578}
4579
4580static int niu_tx_cs_reset_poll(struct niu *np, int channel)
4581{
4582 int limit = 1000;
4583
4584 while (--limit > 0) {
4585 u64 val = nr64(TX_CS(channel));
4586 if (!(val & TX_CS_RST))
4587 return 0;
4588 }
4589 return -ENODEV;
4590}
4591
4592static int niu_tx_channel_reset(struct niu *np, int channel)
4593{
4594 u64 val = nr64(TX_CS(channel));
4595 int err;
4596
4597 val |= TX_CS_RST;
4598 nw64(TX_CS(channel), val);
4599
4600 err = niu_tx_cs_reset_poll(np, channel);
4601 if (!err)
4602 nw64(TX_RING_KICK(channel), 0);
4603
4604 return err;
4605}
4606
4607static int niu_tx_channel_lpage_init(struct niu *np, int channel)
4608{
4609 u64 val;
4610
4611 nw64(TX_LOG_MASK1(channel), 0);
4612 nw64(TX_LOG_VAL1(channel), 0);
4613 nw64(TX_LOG_MASK2(channel), 0);
4614 nw64(TX_LOG_VAL2(channel), 0);
4615 nw64(TX_LOG_PAGE_RELO1(channel), 0);
4616 nw64(TX_LOG_PAGE_RELO2(channel), 0);
4617 nw64(TX_LOG_PAGE_HDL(channel), 0);
4618
4619 val = (u64)np->port << TX_LOG_PAGE_VLD_FUNC_SHIFT;
4620 val |= (TX_LOG_PAGE_VLD_PAGE0 | TX_LOG_PAGE_VLD_PAGE1);
4621 nw64(TX_LOG_PAGE_VLD(channel), val);
4622
4623 /* XXX TXDMA 32bit mode? XXX */
4624
4625 return 0;
4626}
4627
4628static void niu_txc_enable_port(struct niu *np, int on)
4629{
4630 unsigned long flags;
4631 u64 val, mask;
4632
4633 niu_lock_parent(np, flags);
4634 val = nr64(TXC_CONTROL);
4635 mask = (u64)1 << np->port;
4636 if (on) {
4637 val |= TXC_CONTROL_ENABLE | mask;
4638 } else {
4639 val &= ~mask;
4640 if ((val & ~TXC_CONTROL_ENABLE) == 0)
4641 val &= ~TXC_CONTROL_ENABLE;
4642 }
4643 nw64(TXC_CONTROL, val);
4644 niu_unlock_parent(np, flags);
4645}
4646
4647static void niu_txc_set_imask(struct niu *np, u64 imask)
4648{
4649 unsigned long flags;
4650 u64 val;
4651
4652 niu_lock_parent(np, flags);
4653 val = nr64(TXC_INT_MASK);
4654 val &= ~TXC_INT_MASK_VAL(np->port);
4655 val |= (imask << TXC_INT_MASK_VAL_SHIFT(np->port));
4656 niu_unlock_parent(np, flags);
4657}
4658
4659static void niu_txc_port_dma_enable(struct niu *np, int on)
4660{
4661 u64 val = 0;
4662
4663 if (on) {
4664 int i;
4665
4666 for (i = 0; i < np->num_tx_rings; i++)
4667 val |= (1 << np->tx_rings[i].tx_channel);
4668 }
4669 nw64(TXC_PORT_DMA(np->port), val);
4670}
4671
4672static int niu_init_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
4673{
4674 int err, channel = rp->tx_channel;
4675 u64 val, ring_len;
4676
4677 err = niu_tx_channel_stop(np, channel);
4678 if (err)
4679 return err;
4680
4681 err = niu_tx_channel_reset(np, channel);
4682 if (err)
4683 return err;
4684
4685 err = niu_tx_channel_lpage_init(np, channel);
4686 if (err)
4687 return err;
4688
4689 nw64(TXC_DMA_MAX(channel), rp->max_burst);
4690 nw64(TX_ENT_MSK(channel), 0);
4691
4692 if (rp->descr_dma & ~(TX_RNG_CFIG_STADDR_BASE |
4693 TX_RNG_CFIG_STADDR)) {
4694 netdev_err(np->dev, "TX ring channel %d DMA addr (%llx) is not aligned\n",
4695 channel, (unsigned long long)rp->descr_dma);
4696 return -EINVAL;
4697 }
4698
4699 /* The length field in TX_RNG_CFIG is measured in 64-byte
4700 * blocks. rp->pending is the number of TX descriptors in
4701 * our ring, 8 bytes each, thus we divide by 8 bytes more
4702 * to get the proper value the chip wants.
4703 */
4704 ring_len = (rp->pending / 8);
4705
4706 val = ((ring_len << TX_RNG_CFIG_LEN_SHIFT) |
4707 rp->descr_dma);
4708 nw64(TX_RNG_CFIG(channel), val);
4709
4710 if (((rp->mbox_dma >> 32) & ~TXDMA_MBH_MBADDR) ||
4711 ((u32)rp->mbox_dma & ~TXDMA_MBL_MBADDR)) {
4712 netdev_err(np->dev, "TX ring channel %d MBOX addr (%llx) has invalid bits\n",
4713 channel, (unsigned long long)rp->mbox_dma);
4714 return -EINVAL;
4715 }
4716 nw64(TXDMA_MBH(channel), rp->mbox_dma >> 32);
4717 nw64(TXDMA_MBL(channel), rp->mbox_dma & TXDMA_MBL_MBADDR);
4718
4719 nw64(TX_CS(channel), 0);
4720
4721 rp->last_pkt_cnt = 0;
4722
4723 return 0;
4724}
4725
4726static void niu_init_rdc_groups(struct niu *np)
4727{
4728 struct niu_rdc_tables *tp = &np->parent->rdc_group_cfg[np->port];
4729 int i, first_table_num = tp->first_table_num;
4730
4731 for (i = 0; i < tp->num_tables; i++) {
4732 struct rdc_table *tbl = &tp->tables[i];
4733 int this_table = first_table_num + i;
4734 int slot;
4735
4736 for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++)
4737 nw64(RDC_TBL(this_table, slot),
4738 tbl->rxdma_channel[slot]);
4739 }
4740
4741 nw64(DEF_RDC(np->port), np->parent->rdc_default[np->port]);
4742}
4743
4744static void niu_init_drr_weight(struct niu *np)
4745{
4746 int type = phy_decode(np->parent->port_phy, np->port);
4747 u64 val;
4748
4749 switch (type) {
4750 case PORT_TYPE_10G:
4751 val = PT_DRR_WEIGHT_DEFAULT_10G;
4752 break;
4753
4754 case PORT_TYPE_1G:
4755 default:
4756 val = PT_DRR_WEIGHT_DEFAULT_1G;
4757 break;
4758 }
4759 nw64(PT_DRR_WT(np->port), val);
4760}
4761
4762static int niu_init_hostinfo(struct niu *np)
4763{
4764 struct niu_parent *parent = np->parent;
4765 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
4766 int i, err, num_alt = niu_num_alt_addr(np);
4767 int first_rdc_table = tp->first_table_num;
4768
4769 err = niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
4770 if (err)
4771 return err;
4772
4773 err = niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
4774 if (err)
4775 return err;
4776
4777 for (i = 0; i < num_alt; i++) {
4778 err = niu_set_alt_mac_rdc_table(np, i, first_rdc_table, 1);
4779 if (err)
4780 return err;
4781 }
4782
4783 return 0;
4784}
4785
4786static int niu_rx_channel_reset(struct niu *np, int channel)
4787{
4788 return niu_set_and_wait_clear(np, RXDMA_CFIG1(channel),
4789 RXDMA_CFIG1_RST, 1000, 10,
4790 "RXDMA_CFIG1");
4791}
4792
4793static int niu_rx_channel_lpage_init(struct niu *np, int channel)
4794{
4795 u64 val;
4796
4797 nw64(RX_LOG_MASK1(channel), 0);
4798 nw64(RX_LOG_VAL1(channel), 0);
4799 nw64(RX_LOG_MASK2(channel), 0);
4800 nw64(RX_LOG_VAL2(channel), 0);
4801 nw64(RX_LOG_PAGE_RELO1(channel), 0);
4802 nw64(RX_LOG_PAGE_RELO2(channel), 0);
4803 nw64(RX_LOG_PAGE_HDL(channel), 0);
4804
4805 val = (u64)np->port << RX_LOG_PAGE_VLD_FUNC_SHIFT;
4806 val |= (RX_LOG_PAGE_VLD_PAGE0 | RX_LOG_PAGE_VLD_PAGE1);
4807 nw64(RX_LOG_PAGE_VLD(channel), val);
4808
4809 return 0;
4810}
4811
4812static void niu_rx_channel_wred_init(struct niu *np, struct rx_ring_info *rp)
4813{
4814 u64 val;
4815
4816 val = (((u64)rp->nonsyn_window << RDC_RED_PARA_WIN_SHIFT) |
4817 ((u64)rp->nonsyn_threshold << RDC_RED_PARA_THRE_SHIFT) |
4818 ((u64)rp->syn_window << RDC_RED_PARA_WIN_SYN_SHIFT) |
4819 ((u64)rp->syn_threshold << RDC_RED_PARA_THRE_SYN_SHIFT));
4820 nw64(RDC_RED_PARA(rp->rx_channel), val);
4821}
4822
4823static int niu_compute_rbr_cfig_b(struct rx_ring_info *rp, u64 *ret)
4824{
4825 u64 val = 0;
4826
4827 *ret = 0;
4828 switch (rp->rbr_block_size) {
4829 case 4 * 1024:
4830 val |= (RBR_BLKSIZE_4K << RBR_CFIG_B_BLKSIZE_SHIFT);
4831 break;
4832 case 8 * 1024:
4833 val |= (RBR_BLKSIZE_8K << RBR_CFIG_B_BLKSIZE_SHIFT);
4834 break;
4835 case 16 * 1024:
4836 val |= (RBR_BLKSIZE_16K << RBR_CFIG_B_BLKSIZE_SHIFT);
4837 break;
4838 case 32 * 1024:
4839 val |= (RBR_BLKSIZE_32K << RBR_CFIG_B_BLKSIZE_SHIFT);
4840 break;
4841 default:
4842 return -EINVAL;
4843 }
4844 val |= RBR_CFIG_B_VLD2;
4845 switch (rp->rbr_sizes[2]) {
4846 case 2 * 1024:
4847 val |= (RBR_BUFSZ2_2K << RBR_CFIG_B_BUFSZ2_SHIFT);
4848 break;
4849 case 4 * 1024:
4850 val |= (RBR_BUFSZ2_4K << RBR_CFIG_B_BUFSZ2_SHIFT);
4851 break;
4852 case 8 * 1024:
4853 val |= (RBR_BUFSZ2_8K << RBR_CFIG_B_BUFSZ2_SHIFT);
4854 break;
4855 case 16 * 1024:
4856 val |= (RBR_BUFSZ2_16K << RBR_CFIG_B_BUFSZ2_SHIFT);
4857 break;
4858
4859 default:
4860 return -EINVAL;
4861 }
4862 val |= RBR_CFIG_B_VLD1;
4863 switch (rp->rbr_sizes[1]) {
4864 case 1 * 1024:
4865 val |= (RBR_BUFSZ1_1K << RBR_CFIG_B_BUFSZ1_SHIFT);
4866 break;
4867 case 2 * 1024:
4868 val |= (RBR_BUFSZ1_2K << RBR_CFIG_B_BUFSZ1_SHIFT);
4869 break;
4870 case 4 * 1024:
4871 val |= (RBR_BUFSZ1_4K << RBR_CFIG_B_BUFSZ1_SHIFT);
4872 break;
4873 case 8 * 1024:
4874 val |= (RBR_BUFSZ1_8K << RBR_CFIG_B_BUFSZ1_SHIFT);
4875 break;
4876
4877 default:
4878 return -EINVAL;
4879 }
4880 val |= RBR_CFIG_B_VLD0;
4881 switch (rp->rbr_sizes[0]) {
4882 case 256:
4883 val |= (RBR_BUFSZ0_256 << RBR_CFIG_B_BUFSZ0_SHIFT);
4884 break;
4885 case 512:
4886 val |= (RBR_BUFSZ0_512 << RBR_CFIG_B_BUFSZ0_SHIFT);
4887 break;
4888 case 1 * 1024:
4889 val |= (RBR_BUFSZ0_1K << RBR_CFIG_B_BUFSZ0_SHIFT);
4890 break;
4891 case 2 * 1024:
4892 val |= (RBR_BUFSZ0_2K << RBR_CFIG_B_BUFSZ0_SHIFT);
4893 break;
4894
4895 default:
4896 return -EINVAL;
4897 }
4898
4899 *ret = val;
4900 return 0;
4901}
4902
4903static int niu_enable_rx_channel(struct niu *np, int channel, int on)
4904{
4905 u64 val = nr64(RXDMA_CFIG1(channel));
4906 int limit;
4907
4908 if (on)
4909 val |= RXDMA_CFIG1_EN;
4910 else
4911 val &= ~RXDMA_CFIG1_EN;
4912 nw64(RXDMA_CFIG1(channel), val);
4913
4914 limit = 1000;
4915 while (--limit > 0) {
4916 if (nr64(RXDMA_CFIG1(channel)) & RXDMA_CFIG1_QST)
4917 break;
4918 udelay(10);
4919 }
4920 if (limit <= 0)
4921 return -ENODEV;
4922 return 0;
4923}
4924
4925static int niu_init_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
4926{
4927 int err, channel = rp->rx_channel;
4928 u64 val;
4929
4930 err = niu_rx_channel_reset(np, channel);
4931 if (err)
4932 return err;
4933
4934 err = niu_rx_channel_lpage_init(np, channel);
4935 if (err)
4936 return err;
4937
4938 niu_rx_channel_wred_init(np, rp);
4939
4940 nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_RBR_EMPTY);
4941 nw64(RX_DMA_CTL_STAT(channel),
4942 (RX_DMA_CTL_STAT_MEX |
4943 RX_DMA_CTL_STAT_RCRTHRES |
4944 RX_DMA_CTL_STAT_RCRTO |
4945 RX_DMA_CTL_STAT_RBR_EMPTY));
4946 nw64(RXDMA_CFIG1(channel), rp->mbox_dma >> 32);
4947 nw64(RXDMA_CFIG2(channel),
4948 ((rp->mbox_dma & RXDMA_CFIG2_MBADDR_L) |
4949 RXDMA_CFIG2_FULL_HDR));
4950 nw64(RBR_CFIG_A(channel),
4951 ((u64)rp->rbr_table_size << RBR_CFIG_A_LEN_SHIFT) |
4952 (rp->rbr_dma & (RBR_CFIG_A_STADDR_BASE | RBR_CFIG_A_STADDR)));
4953 err = niu_compute_rbr_cfig_b(rp, &val);
4954 if (err)
4955 return err;
4956 nw64(RBR_CFIG_B(channel), val);
4957 nw64(RCRCFIG_A(channel),
4958 ((u64)rp->rcr_table_size << RCRCFIG_A_LEN_SHIFT) |
4959 (rp->rcr_dma & (RCRCFIG_A_STADDR_BASE | RCRCFIG_A_STADDR)));
4960 nw64(RCRCFIG_B(channel),
4961 ((u64)rp->rcr_pkt_threshold << RCRCFIG_B_PTHRES_SHIFT) |
4962 RCRCFIG_B_ENTOUT |
4963 ((u64)rp->rcr_timeout << RCRCFIG_B_TIMEOUT_SHIFT));
4964
4965 err = niu_enable_rx_channel(np, channel, 1);
4966 if (err)
4967 return err;
4968
4969 nw64(RBR_KICK(channel), rp->rbr_index);
4970
4971 val = nr64(RX_DMA_CTL_STAT(channel));
4972 val |= RX_DMA_CTL_STAT_RBR_EMPTY;
4973 nw64(RX_DMA_CTL_STAT(channel), val);
4974
4975 return 0;
4976}
4977
4978static int niu_init_rx_channels(struct niu *np)
4979{
4980 unsigned long flags;
4981 u64 seed = jiffies_64;
4982 int err, i;
4983
4984 niu_lock_parent(np, flags);
4985 nw64(RX_DMA_CK_DIV, np->parent->rxdma_clock_divider);
4986 nw64(RED_RAN_INIT, RED_RAN_INIT_OPMODE | (seed & RED_RAN_INIT_VAL));
4987 niu_unlock_parent(np, flags);
4988
4989 /* XXX RXDMA 32bit mode? XXX */
4990
4991 niu_init_rdc_groups(np);
4992 niu_init_drr_weight(np);
4993
4994 err = niu_init_hostinfo(np);
4995 if (err)
4996 return err;
4997
4998 for (i = 0; i < np->num_rx_rings; i++) {
4999 struct rx_ring_info *rp = &np->rx_rings[i];
5000
5001 err = niu_init_one_rx_channel(np, rp);
5002 if (err)
5003 return err;
5004 }
5005
5006 return 0;
5007}
5008
5009static int niu_set_ip_frag_rule(struct niu *np)
5010{
5011 struct niu_parent *parent = np->parent;
5012 struct niu_classifier *cp = &np->clas;
5013 struct niu_tcam_entry *tp;
5014 int index, err;
5015
5016 index = cp->tcam_top;
5017 tp = &parent->tcam[index];
5018
5019 /* Note that the noport bit is the same in both ipv4 and
5020 * ipv6 format TCAM entries.
5021 */
5022 memset(tp, 0, sizeof(*tp));
5023 tp->key[1] = TCAM_V4KEY1_NOPORT;
5024 tp->key_mask[1] = TCAM_V4KEY1_NOPORT;
5025 tp->assoc_data = (TCAM_ASSOCDATA_TRES_USE_OFFSET |
5026 ((u64)0 << TCAM_ASSOCDATA_OFFSET_SHIFT));
5027 err = tcam_write(np, index, tp->key, tp->key_mask);
5028 if (err)
5029 return err;
5030 err = tcam_assoc_write(np, index, tp->assoc_data);
5031 if (err)
5032 return err;
5033 tp->valid = 1;
5034 cp->tcam_valid_entries++;
5035
5036 return 0;
5037}
5038
5039static int niu_init_classifier_hw(struct niu *np)
5040{
5041 struct niu_parent *parent = np->parent;
5042 struct niu_classifier *cp = &np->clas;
5043 int i, err;
5044
5045 nw64(H1POLY, cp->h1_init);
5046 nw64(H2POLY, cp->h2_init);
5047
5048 err = niu_init_hostinfo(np);
5049 if (err)
5050 return err;
5051
5052 for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++) {
5053 struct niu_vlan_rdc *vp = &cp->vlan_mappings[i];
5054
5055 vlan_tbl_write(np, i, np->port,
5056 vp->vlan_pref, vp->rdc_num);
5057 }
5058
5059 for (i = 0; i < cp->num_alt_mac_mappings; i++) {
5060 struct niu_altmac_rdc *ap = &cp->alt_mac_mappings[i];
5061
5062 err = niu_set_alt_mac_rdc_table(np, ap->alt_mac_num,
5063 ap->rdc_num, ap->mac_pref);
5064 if (err)
5065 return err;
5066 }
5067
5068 for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
5069 int index = i - CLASS_CODE_USER_PROG1;
5070
5071 err = niu_set_tcam_key(np, i, parent->tcam_key[index]);
5072 if (err)
5073 return err;
5074 err = niu_set_flow_key(np, i, parent->flow_key[index]);
5075 if (err)
5076 return err;
5077 }
5078
5079 err = niu_set_ip_frag_rule(np);
5080 if (err)
5081 return err;
5082
5083 tcam_enable(np, 1);
5084
5085 return 0;
5086}
5087
5088static int niu_zcp_write(struct niu *np, int index, u64 *data)
5089{
5090 nw64(ZCP_RAM_DATA0, data[0]);
5091 nw64(ZCP_RAM_DATA1, data[1]);
5092 nw64(ZCP_RAM_DATA2, data[2]);
5093 nw64(ZCP_RAM_DATA3, data[3]);
5094 nw64(ZCP_RAM_DATA4, data[4]);
5095 nw64(ZCP_RAM_BE, ZCP_RAM_BE_VAL);
5096 nw64(ZCP_RAM_ACC,
5097 (ZCP_RAM_ACC_WRITE |
5098 (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
5099 (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));
5100
5101 return niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
5102 1000, 100);
5103}
5104
5105static int niu_zcp_read(struct niu *np, int index, u64 *data)
5106{
5107 int err;
5108
5109 err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
5110 1000, 100);
5111 if (err) {
5112 netdev_err(np->dev, "ZCP read busy won't clear, ZCP_RAM_ACC[%llx]\n",
5113 (unsigned long long)nr64(ZCP_RAM_ACC));
5114 return err;
5115 }
5116
5117 nw64(ZCP_RAM_ACC,
5118 (ZCP_RAM_ACC_READ |
5119 (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
5120 (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));
5121
5122 err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
5123 1000, 100);
5124 if (err) {
5125 netdev_err(np->dev, "ZCP read busy2 won't clear, ZCP_RAM_ACC[%llx]\n",
5126 (unsigned long long)nr64(ZCP_RAM_ACC));
5127 return err;
5128 }
5129
5130 data[0] = nr64(ZCP_RAM_DATA0);
5131 data[1] = nr64(ZCP_RAM_DATA1);
5132 data[2] = nr64(ZCP_RAM_DATA2);
5133 data[3] = nr64(ZCP_RAM_DATA3);
5134 data[4] = nr64(ZCP_RAM_DATA4);
5135
5136 return 0;
5137}
5138
5139static void niu_zcp_cfifo_reset(struct niu *np)
5140{
5141 u64 val = nr64(RESET_CFIFO);
5142
5143 val |= RESET_CFIFO_RST(np->port);
5144 nw64(RESET_CFIFO, val);
5145 udelay(10);
5146
5147 val &= ~RESET_CFIFO_RST(np->port);
5148 nw64(RESET_CFIFO, val);
5149}
5150
5151static int niu_init_zcp(struct niu *np)
5152{
5153 u64 data[5], rbuf[5];
5154 int i, max, err;
5155
5156 if (np->parent->plat_type != PLAT_TYPE_NIU) {
5157 if (np->port == 0 || np->port == 1)
5158 max = ATLAS_P0_P1_CFIFO_ENTRIES;
5159 else
5160 max = ATLAS_P2_P3_CFIFO_ENTRIES;
5161 } else
5162 max = NIU_CFIFO_ENTRIES;
5163
5164 data[0] = 0;
5165 data[1] = 0;
5166 data[2] = 0;
5167 data[3] = 0;
5168 data[4] = 0;
5169
5170 for (i = 0; i < max; i++) {
5171 err = niu_zcp_write(np, i, data);
5172 if (err)
5173 return err;
5174 err = niu_zcp_read(np, i, rbuf);
5175 if (err)
5176 return err;
5177 }
5178
5179 niu_zcp_cfifo_reset(np);
5180 nw64(CFIFO_ECC(np->port), 0);
5181 nw64(ZCP_INT_STAT, ZCP_INT_STAT_ALL);
5182 (void) nr64(ZCP_INT_STAT);
5183 nw64(ZCP_INT_MASK, ZCP_INT_MASK_ALL);
5184
5185 return 0;
5186}
5187
5188static void niu_ipp_write(struct niu *np, int index, u64 *data)
5189{
5190 u64 val = nr64_ipp(IPP_CFIG);
5191
5192 nw64_ipp(IPP_CFIG, val | IPP_CFIG_DFIFO_PIO_W);
5193 nw64_ipp(IPP_DFIFO_WR_PTR, index);
5194 nw64_ipp(IPP_DFIFO_WR0, data[0]);
5195 nw64_ipp(IPP_DFIFO_WR1, data[1]);
5196 nw64_ipp(IPP_DFIFO_WR2, data[2]);
5197 nw64_ipp(IPP_DFIFO_WR3, data[3]);
5198 nw64_ipp(IPP_DFIFO_WR4, data[4]);
5199 nw64_ipp(IPP_CFIG, val & ~IPP_CFIG_DFIFO_PIO_W);
5200}
5201
5202static void niu_ipp_read(struct niu *np, int index, u64 *data)
5203{
5204 nw64_ipp(IPP_DFIFO_RD_PTR, index);
5205 data[0] = nr64_ipp(IPP_DFIFO_RD0);
5206 data[1] = nr64_ipp(IPP_DFIFO_RD1);
5207 data[2] = nr64_ipp(IPP_DFIFO_RD2);
5208 data[3] = nr64_ipp(IPP_DFIFO_RD3);
5209 data[4] = nr64_ipp(IPP_DFIFO_RD4);
5210}
5211
5212static int niu_ipp_reset(struct niu *np)
5213{
5214 return niu_set_and_wait_clear_ipp(np, IPP_CFIG, IPP_CFIG_SOFT_RST,
5215 1000, 100, "IPP_CFIG");
5216}
5217
5218static int niu_init_ipp(struct niu *np)
5219{
5220 u64 data[5], rbuf[5], val;
5221 int i, max, err;
5222
5223 if (np->parent->plat_type != PLAT_TYPE_NIU) {
5224 if (np->port == 0 || np->port == 1)
5225 max = ATLAS_P0_P1_DFIFO_ENTRIES;
5226 else
5227 max = ATLAS_P2_P3_DFIFO_ENTRIES;
5228 } else
5229 max = NIU_DFIFO_ENTRIES;
5230
5231 data[0] = 0;
5232 data[1] = 0;
5233 data[2] = 0;
5234 data[3] = 0;
5235 data[4] = 0;
5236
5237 for (i = 0; i < max; i++) {
5238 niu_ipp_write(np, i, data);
5239 niu_ipp_read(np, i, rbuf);
5240 }
5241
5242 (void) nr64_ipp(IPP_INT_STAT);
5243 (void) nr64_ipp(IPP_INT_STAT);
5244
5245 err = niu_ipp_reset(np);
5246 if (err)
5247 return err;
5248
5249 (void) nr64_ipp(IPP_PKT_DIS);
5250 (void) nr64_ipp(IPP_BAD_CS_CNT);
5251 (void) nr64_ipp(IPP_ECC);
5252
5253 (void) nr64_ipp(IPP_INT_STAT);
5254
5255 nw64_ipp(IPP_MSK, ~IPP_MSK_ALL);
5256
5257 val = nr64_ipp(IPP_CFIG);
5258 val &= ~IPP_CFIG_IP_MAX_PKT;
5259 val |= (IPP_CFIG_IPP_ENABLE |
5260 IPP_CFIG_DFIFO_ECC_EN |
5261 IPP_CFIG_DROP_BAD_CRC |
5262 IPP_CFIG_CKSUM_EN |
5263 (0x1ffff << IPP_CFIG_IP_MAX_PKT_SHIFT));
5264 nw64_ipp(IPP_CFIG, val);
5265
5266 return 0;
5267}
5268
5269static void niu_handle_led(struct niu *np, int status)
5270{
5271 u64 val;
5272 val = nr64_mac(XMAC_CONFIG);
5273
5274 if ((np->flags & NIU_FLAGS_10G) != 0 &&
5275 (np->flags & NIU_FLAGS_FIBER) != 0) {
5276 if (status) {
5277 val |= XMAC_CONFIG_LED_POLARITY;
5278 val &= ~XMAC_CONFIG_FORCE_LED_ON;
5279 } else {
5280 val |= XMAC_CONFIG_FORCE_LED_ON;
5281 val &= ~XMAC_CONFIG_LED_POLARITY;
5282 }
5283 }
5284
5285 nw64_mac(XMAC_CONFIG, val);
5286}
5287
5288static void niu_init_xif_xmac(struct niu *np)
5289{
5290 struct niu_link_config *lp = &np->link_config;
5291 u64 val;
5292
5293 if (np->flags & NIU_FLAGS_XCVR_SERDES) {
5294 val = nr64(MIF_CONFIG);
5295 val |= MIF_CONFIG_ATCA_GE;
5296 nw64(MIF_CONFIG, val);
5297 }
5298
5299 val = nr64_mac(XMAC_CONFIG);
5300 val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
5301
5302 val |= XMAC_CONFIG_TX_OUTPUT_EN;
5303
5304 if (lp->loopback_mode == LOOPBACK_MAC) {
5305 val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
5306 val |= XMAC_CONFIG_LOOPBACK;
5307 } else {
5308 val &= ~XMAC_CONFIG_LOOPBACK;
5309 }
5310
5311 if (np->flags & NIU_FLAGS_10G) {
5312 val &= ~XMAC_CONFIG_LFS_DISABLE;
5313 } else {
5314 val |= XMAC_CONFIG_LFS_DISABLE;
5315 if (!(np->flags & NIU_FLAGS_FIBER) &&
5316 !(np->flags & NIU_FLAGS_XCVR_SERDES))
5317 val |= XMAC_CONFIG_1G_PCS_BYPASS;
5318 else
5319 val &= ~XMAC_CONFIG_1G_PCS_BYPASS;
5320 }
5321
5322 val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;
5323
5324 if (lp->active_speed == SPEED_100)
5325 val |= XMAC_CONFIG_SEL_CLK_25MHZ;
5326 else
5327 val &= ~XMAC_CONFIG_SEL_CLK_25MHZ;
5328
5329 nw64_mac(XMAC_CONFIG, val);
5330
5331 val = nr64_mac(XMAC_CONFIG);
5332 val &= ~XMAC_CONFIG_MODE_MASK;
5333 if (np->flags & NIU_FLAGS_10G) {
5334 val |= XMAC_CONFIG_MODE_XGMII;
5335 } else {
5336 if (lp->active_speed == SPEED_1000)
5337 val |= XMAC_CONFIG_MODE_GMII;
5338 else
5339 val |= XMAC_CONFIG_MODE_MII;
5340 }
5341
5342 nw64_mac(XMAC_CONFIG, val);
5343}
5344
5345static void niu_init_xif_bmac(struct niu *np)
5346{
5347 struct niu_link_config *lp = &np->link_config;
5348 u64 val;
5349
5350 val = BMAC_XIF_CONFIG_TX_OUTPUT_EN;
5351
5352 if (lp->loopback_mode == LOOPBACK_MAC)
5353 val |= BMAC_XIF_CONFIG_MII_LOOPBACK;
5354 else
5355 val &= ~BMAC_XIF_CONFIG_MII_LOOPBACK;
5356
5357 if (lp->active_speed == SPEED_1000)
5358 val |= BMAC_XIF_CONFIG_GMII_MODE;
5359 else
5360 val &= ~BMAC_XIF_CONFIG_GMII_MODE;
5361
5362 val &= ~(BMAC_XIF_CONFIG_LINK_LED |
5363 BMAC_XIF_CONFIG_LED_POLARITY);
5364
5365 if (!(np->flags & NIU_FLAGS_10G) &&
5366 !(np->flags & NIU_FLAGS_FIBER) &&
5367 lp->active_speed == SPEED_100)
5368 val |= BMAC_XIF_CONFIG_25MHZ_CLOCK;
5369 else
5370 val &= ~BMAC_XIF_CONFIG_25MHZ_CLOCK;
5371
5372 nw64_mac(BMAC_XIF_CONFIG, val);
5373}
5374
5375static void niu_init_xif(struct niu *np)
5376{
5377 if (np->flags & NIU_FLAGS_XMAC)
5378 niu_init_xif_xmac(np);
5379 else
5380 niu_init_xif_bmac(np);
5381}
5382
5383static void niu_pcs_mii_reset(struct niu *np)
5384{
5385 int limit = 1000;
5386 u64 val = nr64_pcs(PCS_MII_CTL);
5387 val |= PCS_MII_CTL_RST;
5388 nw64_pcs(PCS_MII_CTL, val);
5389 while ((--limit >= 0) && (val & PCS_MII_CTL_RST)) {
5390 udelay(100);
5391 val = nr64_pcs(PCS_MII_CTL);
5392 }
5393}
5394
5395static void niu_xpcs_reset(struct niu *np)
5396{
5397 int limit = 1000;
5398 u64 val = nr64_xpcs(XPCS_CONTROL1);
5399 val |= XPCS_CONTROL1_RESET;
5400 nw64_xpcs(XPCS_CONTROL1, val);
5401 while ((--limit >= 0) && (val & XPCS_CONTROL1_RESET)) {
5402 udelay(100);
5403 val = nr64_xpcs(XPCS_CONTROL1);
5404 }
5405}
5406
5407static int niu_init_pcs(struct niu *np)
5408{
5409 struct niu_link_config *lp = &np->link_config;
5410 u64 val;
5411
5412 switch (np->flags & (NIU_FLAGS_10G |
5413 NIU_FLAGS_FIBER |
5414 NIU_FLAGS_XCVR_SERDES)) {
5415 case NIU_FLAGS_FIBER:
5416 /* 1G fiber */
5417 nw64_pcs(PCS_CONF, PCS_CONF_MASK | PCS_CONF_ENABLE);
5418 nw64_pcs(PCS_DPATH_MODE, 0);
5419 niu_pcs_mii_reset(np);
5420 break;
5421
5422 case NIU_FLAGS_10G:
5423 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
5424 case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
5425 /* 10G SERDES */
5426 if (!(np->flags & NIU_FLAGS_XMAC))
5427 return -EINVAL;
5428
5429 /* 10G copper or fiber */
5430 val = nr64_mac(XMAC_CONFIG);
5431 val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;
5432 nw64_mac(XMAC_CONFIG, val);
5433
5434 niu_xpcs_reset(np);
5435
5436 val = nr64_xpcs(XPCS_CONTROL1);
5437 if (lp->loopback_mode == LOOPBACK_PHY)
5438 val |= XPCS_CONTROL1_LOOPBACK;
5439 else
5440 val &= ~XPCS_CONTROL1_LOOPBACK;
5441 nw64_xpcs(XPCS_CONTROL1, val);
5442
5443 nw64_xpcs(XPCS_DESKEW_ERR_CNT, 0);
5444 (void) nr64_xpcs(XPCS_SYMERR_CNT01);
5445 (void) nr64_xpcs(XPCS_SYMERR_CNT23);
5446 break;
5447
5448
5449 case NIU_FLAGS_XCVR_SERDES:
5450 /* 1G SERDES */
5451 niu_pcs_mii_reset(np);
5452 nw64_pcs(PCS_CONF, PCS_CONF_MASK | PCS_CONF_ENABLE);
5453 nw64_pcs(PCS_DPATH_MODE, 0);
5454 break;
5455
5456 case 0:
5457 /* 1G copper */
5458 case NIU_FLAGS_XCVR_SERDES | NIU_FLAGS_FIBER:
5459 /* 1G RGMII FIBER */
5460 nw64_pcs(PCS_DPATH_MODE, PCS_DPATH_MODE_MII);
5461 niu_pcs_mii_reset(np);
5462 break;
5463
5464 default:
5465 return -EINVAL;
5466 }
5467
5468 return 0;
5469}
5470
5471static int niu_reset_tx_xmac(struct niu *np)
5472{
5473 return niu_set_and_wait_clear_mac(np, XTXMAC_SW_RST,
5474 (XTXMAC_SW_RST_REG_RS |
5475 XTXMAC_SW_RST_SOFT_RST),
5476 1000, 100, "XTXMAC_SW_RST");
5477}
5478
5479static int niu_reset_tx_bmac(struct niu *np)
5480{
5481 int limit;
5482
5483 nw64_mac(BTXMAC_SW_RST, BTXMAC_SW_RST_RESET);
5484 limit = 1000;
5485 while (--limit >= 0) {
5486 if (!(nr64_mac(BTXMAC_SW_RST) & BTXMAC_SW_RST_RESET))
5487 break;
5488 udelay(100);
5489 }
5490 if (limit < 0) {
5491 dev_err(np->device, "Port %u TX BMAC would not reset, BTXMAC_SW_RST[%llx]\n",
5492 np->port,
5493 (unsigned long long) nr64_mac(BTXMAC_SW_RST));
5494 return -ENODEV;
5495 }
5496
5497 return 0;
5498}
5499
5500static int niu_reset_tx_mac(struct niu *np)
5501{
5502 if (np->flags & NIU_FLAGS_XMAC)
5503 return niu_reset_tx_xmac(np);
5504 else
5505 return niu_reset_tx_bmac(np);
5506}
5507
5508static void niu_init_tx_xmac(struct niu *np, u64 min, u64 max)
5509{
5510 u64 val;
5511
5512 val = nr64_mac(XMAC_MIN);
5513 val &= ~(XMAC_MIN_TX_MIN_PKT_SIZE |
5514 XMAC_MIN_RX_MIN_PKT_SIZE);
5515 val |= (min << XMAC_MIN_RX_MIN_PKT_SIZE_SHFT);
5516 val |= (min << XMAC_MIN_TX_MIN_PKT_SIZE_SHFT);
5517 nw64_mac(XMAC_MIN, val);
5518
5519 nw64_mac(XMAC_MAX, max);
5520
5521 nw64_mac(XTXMAC_STAT_MSK, ~(u64)0);
5522
5523 val = nr64_mac(XMAC_IPG);
5524 if (np->flags & NIU_FLAGS_10G) {
5525 val &= ~XMAC_IPG_IPG_XGMII;
5526 val |= (IPG_12_15_XGMII << XMAC_IPG_IPG_XGMII_SHIFT);
5527 } else {
5528 val &= ~XMAC_IPG_IPG_MII_GMII;
5529 val |= (IPG_12_MII_GMII << XMAC_IPG_IPG_MII_GMII_SHIFT);
5530 }
5531 nw64_mac(XMAC_IPG, val);
5532
5533 val = nr64_mac(XMAC_CONFIG);
5534 val &= ~(XMAC_CONFIG_ALWAYS_NO_CRC |
5535 XMAC_CONFIG_STRETCH_MODE |
5536 XMAC_CONFIG_VAR_MIN_IPG_EN |
5537 XMAC_CONFIG_TX_ENABLE);
5538 nw64_mac(XMAC_CONFIG, val);
5539
5540 nw64_mac(TXMAC_FRM_CNT, 0);
5541 nw64_mac(TXMAC_BYTE_CNT, 0);
5542}
5543
5544static void niu_init_tx_bmac(struct niu *np, u64 min, u64 max)
5545{
5546 u64 val;
5547
5548 nw64_mac(BMAC_MIN_FRAME, min);
5549 nw64_mac(BMAC_MAX_FRAME, max);
5550
5551 nw64_mac(BTXMAC_STATUS_MASK, ~(u64)0);
5552 nw64_mac(BMAC_CTRL_TYPE, 0x8808);
5553 nw64_mac(BMAC_PREAMBLE_SIZE, 7);
5554
5555 val = nr64_mac(BTXMAC_CONFIG);
5556 val &= ~(BTXMAC_CONFIG_FCS_DISABLE |
5557 BTXMAC_CONFIG_ENABLE);
5558 nw64_mac(BTXMAC_CONFIG, val);
5559}
5560
5561static void niu_init_tx_mac(struct niu *np)
5562{
5563 u64 min, max;
5564
5565 min = 64;
5566 if (np->dev->mtu > ETH_DATA_LEN)
5567 max = 9216;
5568 else
5569 max = 1522;
5570
5571 /* The XMAC_MIN register only accepts values for TX min which
5572 * have the low 3 bits cleared.
5573 */
5574 BUG_ON(min & 0x7);
5575
5576 if (np->flags & NIU_FLAGS_XMAC)
5577 niu_init_tx_xmac(np, min, max);
5578 else
5579 niu_init_tx_bmac(np, min, max);
5580}
5581
5582static int niu_reset_rx_xmac(struct niu *np)
5583{
5584 int limit;
5585
5586 nw64_mac(XRXMAC_SW_RST,
5587 XRXMAC_SW_RST_REG_RS | XRXMAC_SW_RST_SOFT_RST);
5588 limit = 1000;
5589 while (--limit >= 0) {
5590 if (!(nr64_mac(XRXMAC_SW_RST) & (XRXMAC_SW_RST_REG_RS |
5591 XRXMAC_SW_RST_SOFT_RST)))
5592 break;
5593 udelay(100);
5594 }
5595 if (limit < 0) {
5596 dev_err(np->device, "Port %u RX XMAC would not reset, XRXMAC_SW_RST[%llx]\n",
5597 np->port,
5598 (unsigned long long) nr64_mac(XRXMAC_SW_RST));
5599 return -ENODEV;
5600 }
5601
5602 return 0;
5603}
5604
5605static int niu_reset_rx_bmac(struct niu *np)
5606{
5607 int limit;
5608
5609 nw64_mac(BRXMAC_SW_RST, BRXMAC_SW_RST_RESET);
5610 limit = 1000;
5611 while (--limit >= 0) {
5612 if (!(nr64_mac(BRXMAC_SW_RST) & BRXMAC_SW_RST_RESET))
5613 break;
5614 udelay(100);
5615 }
5616 if (limit < 0) {
5617 dev_err(np->device, "Port %u RX BMAC would not reset, BRXMAC_SW_RST[%llx]\n",
5618 np->port,
5619 (unsigned long long) nr64_mac(BRXMAC_SW_RST));
5620 return -ENODEV;
5621 }
5622
5623 return 0;
5624}
5625
5626static int niu_reset_rx_mac(struct niu *np)
5627{
5628 if (np->flags & NIU_FLAGS_XMAC)
5629 return niu_reset_rx_xmac(np);
5630 else
5631 return niu_reset_rx_bmac(np);
5632}
5633
5634static void niu_init_rx_xmac(struct niu *np)
5635{
5636 struct niu_parent *parent = np->parent;
5637 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
5638 int first_rdc_table = tp->first_table_num;
5639 unsigned long i;
5640 u64 val;
5641
5642 nw64_mac(XMAC_ADD_FILT0, 0);
5643 nw64_mac(XMAC_ADD_FILT1, 0);
5644 nw64_mac(XMAC_ADD_FILT2, 0);
5645 nw64_mac(XMAC_ADD_FILT12_MASK, 0);
5646 nw64_mac(XMAC_ADD_FILT00_MASK, 0);
5647 for (i = 0; i < MAC_NUM_HASH; i++)
5648 nw64_mac(XMAC_HASH_TBL(i), 0);
5649 nw64_mac(XRXMAC_STAT_MSK, ~(u64)0);
5650 niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
5651 niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
5652
5653 val = nr64_mac(XMAC_CONFIG);
5654 val &= ~(XMAC_CONFIG_RX_MAC_ENABLE |
5655 XMAC_CONFIG_PROMISCUOUS |
5656 XMAC_CONFIG_PROMISC_GROUP |
5657 XMAC_CONFIG_ERR_CHK_DIS |
5658 XMAC_CONFIG_RX_CRC_CHK_DIS |
5659 XMAC_CONFIG_RESERVED_MULTICAST |
5660 XMAC_CONFIG_RX_CODEV_CHK_DIS |
5661 XMAC_CONFIG_ADDR_FILTER_EN |
5662 XMAC_CONFIG_RCV_PAUSE_ENABLE |
5663 XMAC_CONFIG_STRIP_CRC |
5664 XMAC_CONFIG_PASS_FLOW_CTRL |
5665 XMAC_CONFIG_MAC2IPP_PKT_CNT_EN);
5666 val |= (XMAC_CONFIG_HASH_FILTER_EN);
5667 nw64_mac(XMAC_CONFIG, val);
5668
5669 nw64_mac(RXMAC_BT_CNT, 0);
5670 nw64_mac(RXMAC_BC_FRM_CNT, 0);
5671 nw64_mac(RXMAC_MC_FRM_CNT, 0);
5672 nw64_mac(RXMAC_FRAG_CNT, 0);
5673 nw64_mac(RXMAC_HIST_CNT1, 0);
5674 nw64_mac(RXMAC_HIST_CNT2, 0);
5675 nw64_mac(RXMAC_HIST_CNT3, 0);
5676 nw64_mac(RXMAC_HIST_CNT4, 0);
5677 nw64_mac(RXMAC_HIST_CNT5, 0);
5678 nw64_mac(RXMAC_HIST_CNT6, 0);
5679 nw64_mac(RXMAC_HIST_CNT7, 0);
5680 nw64_mac(RXMAC_MPSZER_CNT, 0);
5681 nw64_mac(RXMAC_CRC_ER_CNT, 0);
5682 nw64_mac(RXMAC_CD_VIO_CNT, 0);
5683 nw64_mac(LINK_FAULT_CNT, 0);
5684}
5685
5686static void niu_init_rx_bmac(struct niu *np)
5687{
5688 struct niu_parent *parent = np->parent;
5689 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
5690 int first_rdc_table = tp->first_table_num;
5691 unsigned long i;
5692 u64 val;
5693
5694 nw64_mac(BMAC_ADD_FILT0, 0);
5695 nw64_mac(BMAC_ADD_FILT1, 0);
5696 nw64_mac(BMAC_ADD_FILT2, 0);
5697 nw64_mac(BMAC_ADD_FILT12_MASK, 0);
5698 nw64_mac(BMAC_ADD_FILT00_MASK, 0);
5699 for (i = 0; i < MAC_NUM_HASH; i++)
5700 nw64_mac(BMAC_HASH_TBL(i), 0);
5701 niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
5702 niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
5703 nw64_mac(BRXMAC_STATUS_MASK, ~(u64)0);
5704
5705 val = nr64_mac(BRXMAC_CONFIG);
5706 val &= ~(BRXMAC_CONFIG_ENABLE |
5707 BRXMAC_CONFIG_STRIP_PAD |
5708 BRXMAC_CONFIG_STRIP_FCS |
5709 BRXMAC_CONFIG_PROMISC |
5710 BRXMAC_CONFIG_PROMISC_GRP |
5711 BRXMAC_CONFIG_ADDR_FILT_EN |
5712 BRXMAC_CONFIG_DISCARD_DIS);
5713 val |= (BRXMAC_CONFIG_HASH_FILT_EN);
5714 nw64_mac(BRXMAC_CONFIG, val);
5715
5716 val = nr64_mac(BMAC_ADDR_CMPEN);
5717 val |= BMAC_ADDR_CMPEN_EN0;
5718 nw64_mac(BMAC_ADDR_CMPEN, val);
5719}
5720
5721static void niu_init_rx_mac(struct niu *np)
5722{
5723 niu_set_primary_mac(np, np->dev->dev_addr);
5724
5725 if (np->flags & NIU_FLAGS_XMAC)
5726 niu_init_rx_xmac(np);
5727 else
5728 niu_init_rx_bmac(np);
5729}
5730
5731static void niu_enable_tx_xmac(struct niu *np, int on)
5732{
5733 u64 val = nr64_mac(XMAC_CONFIG);
5734
5735 if (on)
5736 val |= XMAC_CONFIG_TX_ENABLE;
5737 else
5738 val &= ~XMAC_CONFIG_TX_ENABLE;
5739 nw64_mac(XMAC_CONFIG, val);
5740}
5741
5742static void niu_enable_tx_bmac(struct niu *np, int on)
5743{
5744 u64 val = nr64_mac(BTXMAC_CONFIG);
5745
5746 if (on)
5747 val |= BTXMAC_CONFIG_ENABLE;
5748 else
5749 val &= ~BTXMAC_CONFIG_ENABLE;
5750 nw64_mac(BTXMAC_CONFIG, val);
5751}
5752
5753static void niu_enable_tx_mac(struct niu *np, int on)
5754{
5755 if (np->flags & NIU_FLAGS_XMAC)
5756 niu_enable_tx_xmac(np, on);
5757 else
5758 niu_enable_tx_bmac(np, on);
5759}
5760
5761static void niu_enable_rx_xmac(struct niu *np, int on)
5762{
5763 u64 val = nr64_mac(XMAC_CONFIG);
5764
5765 val &= ~(XMAC_CONFIG_HASH_FILTER_EN |
5766 XMAC_CONFIG_PROMISCUOUS);
5767
5768 if (np->flags & NIU_FLAGS_MCAST)
5769 val |= XMAC_CONFIG_HASH_FILTER_EN;
5770 if (np->flags & NIU_FLAGS_PROMISC)
5771 val |= XMAC_CONFIG_PROMISCUOUS;
5772
5773 if (on)
5774 val |= XMAC_CONFIG_RX_MAC_ENABLE;
5775 else
5776 val &= ~XMAC_CONFIG_RX_MAC_ENABLE;
5777 nw64_mac(XMAC_CONFIG, val);
5778}
5779
5780static void niu_enable_rx_bmac(struct niu *np, int on)
5781{
5782 u64 val = nr64_mac(BRXMAC_CONFIG);
5783
5784 val &= ~(BRXMAC_CONFIG_HASH_FILT_EN |
5785 BRXMAC_CONFIG_PROMISC);
5786
5787 if (np->flags & NIU_FLAGS_MCAST)
5788 val |= BRXMAC_CONFIG_HASH_FILT_EN;
5789 if (np->flags & NIU_FLAGS_PROMISC)
5790 val |= BRXMAC_CONFIG_PROMISC;
5791
5792 if (on)
5793 val |= BRXMAC_CONFIG_ENABLE;
5794 else
5795 val &= ~BRXMAC_CONFIG_ENABLE;
5796 nw64_mac(BRXMAC_CONFIG, val);
5797}
5798
5799static void niu_enable_rx_mac(struct niu *np, int on)
5800{
5801 if (np->flags & NIU_FLAGS_XMAC)
5802 niu_enable_rx_xmac(np, on);
5803 else
5804 niu_enable_rx_bmac(np, on);
5805}
5806
5807static int niu_init_mac(struct niu *np)
5808{
5809 int err;
5810
5811 niu_init_xif(np);
5812 err = niu_init_pcs(np);
5813 if (err)
5814 return err;
5815
5816 err = niu_reset_tx_mac(np);
5817 if (err)
5818 return err;
5819 niu_init_tx_mac(np);
5820 err = niu_reset_rx_mac(np);
5821 if (err)
5822 return err;
5823 niu_init_rx_mac(np);
5824
5825 /* This looks hookey but the RX MAC reset we just did will
5826 * undo some of the state we setup in niu_init_tx_mac() so we
5827 * have to call it again. In particular, the RX MAC reset will
5828 * set the XMAC_MAX register back to it's default value.
5829 */
5830 niu_init_tx_mac(np);
5831 niu_enable_tx_mac(np, 1);
5832
5833 niu_enable_rx_mac(np, 1);
5834
5835 return 0;
5836}
5837
5838static void niu_stop_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
5839{
5840 (void) niu_tx_channel_stop(np, rp->tx_channel);
5841}
5842
5843static void niu_stop_tx_channels(struct niu *np)
5844{
5845 int i;
5846
5847 for (i = 0; i < np->num_tx_rings; i++) {
5848 struct tx_ring_info *rp = &np->tx_rings[i];
5849
5850 niu_stop_one_tx_channel(np, rp);
5851 }
5852}
5853
5854static void niu_reset_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
5855{
5856 (void) niu_tx_channel_reset(np, rp->tx_channel);
5857}
5858
5859static void niu_reset_tx_channels(struct niu *np)
5860{
5861 int i;
5862
5863 for (i = 0; i < np->num_tx_rings; i++) {
5864 struct tx_ring_info *rp = &np->tx_rings[i];
5865
5866 niu_reset_one_tx_channel(np, rp);
5867 }
5868}
5869
5870static void niu_stop_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
5871{
5872 (void) niu_enable_rx_channel(np, rp->rx_channel, 0);
5873}
5874
5875static void niu_stop_rx_channels(struct niu *np)
5876{
5877 int i;
5878
5879 for (i = 0; i < np->num_rx_rings; i++) {
5880 struct rx_ring_info *rp = &np->rx_rings[i];
5881
5882 niu_stop_one_rx_channel(np, rp);
5883 }
5884}
5885
5886static void niu_reset_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
5887{
5888 int channel = rp->rx_channel;
5889
5890 (void) niu_rx_channel_reset(np, channel);
5891 nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_ALL);
5892 nw64(RX_DMA_CTL_STAT(channel), 0);
5893 (void) niu_enable_rx_channel(np, channel, 0);
5894}
5895
5896static void niu_reset_rx_channels(struct niu *np)
5897{
5898 int i;
5899
5900 for (i = 0; i < np->num_rx_rings; i++) {
5901 struct rx_ring_info *rp = &np->rx_rings[i];
5902
5903 niu_reset_one_rx_channel(np, rp);
5904 }
5905}
5906
5907static void niu_disable_ipp(struct niu *np)
5908{
5909 u64 rd, wr, val;
5910 int limit;
5911
5912 rd = nr64_ipp(IPP_DFIFO_RD_PTR);
5913 wr = nr64_ipp(IPP_DFIFO_WR_PTR);
5914 limit = 100;
5915 while (--limit >= 0 && (rd != wr)) {
5916 rd = nr64_ipp(IPP_DFIFO_RD_PTR);
5917 wr = nr64_ipp(IPP_DFIFO_WR_PTR);
5918 }
5919 if (limit < 0 &&
5920 (rd != 0 && wr != 1)) {
5921 netdev_err(np->dev, "IPP would not quiesce, rd_ptr[%llx] wr_ptr[%llx]\n",
5922 (unsigned long long)nr64_ipp(IPP_DFIFO_RD_PTR),
5923 (unsigned long long)nr64_ipp(IPP_DFIFO_WR_PTR));
5924 }
5925
5926 val = nr64_ipp(IPP_CFIG);
5927 val &= ~(IPP_CFIG_IPP_ENABLE |
5928 IPP_CFIG_DFIFO_ECC_EN |
5929 IPP_CFIG_DROP_BAD_CRC |
5930 IPP_CFIG_CKSUM_EN);
5931 nw64_ipp(IPP_CFIG, val);
5932
5933 (void) niu_ipp_reset(np);
5934}
5935
5936static int niu_init_hw(struct niu *np)
5937{
5938 int i, err;
5939
5940 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize TXC\n");
5941 niu_txc_enable_port(np, 1);
5942 niu_txc_port_dma_enable(np, 1);
5943 niu_txc_set_imask(np, 0);
5944
5945 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize TX channels\n");
5946 for (i = 0; i < np->num_tx_rings; i++) {
5947 struct tx_ring_info *rp = &np->tx_rings[i];
5948
5949 err = niu_init_one_tx_channel(np, rp);
5950 if (err)
5951 return err;
5952 }
5953
5954 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize RX channels\n");
5955 err = niu_init_rx_channels(np);
5956 if (err)
5957 goto out_uninit_tx_channels;
5958
5959 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize classifier\n");
5960 err = niu_init_classifier_hw(np);
5961 if (err)
5962 goto out_uninit_rx_channels;
5963
5964 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize ZCP\n");
5965 err = niu_init_zcp(np);
5966 if (err)
5967 goto out_uninit_rx_channels;
5968
5969 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize IPP\n");
5970 err = niu_init_ipp(np);
5971 if (err)
5972 goto out_uninit_rx_channels;
5973
5974 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize MAC\n");
5975 err = niu_init_mac(np);
5976 if (err)
5977 goto out_uninit_ipp;
5978
5979 return 0;
5980
5981out_uninit_ipp:
5982 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Uninit IPP\n");
5983 niu_disable_ipp(np);
5984
5985out_uninit_rx_channels:
5986 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Uninit RX channels\n");
5987 niu_stop_rx_channels(np);
5988 niu_reset_rx_channels(np);
5989
5990out_uninit_tx_channels:
5991 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Uninit TX channels\n");
5992 niu_stop_tx_channels(np);
5993 niu_reset_tx_channels(np);
5994
5995 return err;
5996}
5997
5998static void niu_stop_hw(struct niu *np)
5999{
6000 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Disable interrupts\n");
6001 niu_enable_interrupts(np, 0);
6002
6003 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Disable RX MAC\n");
6004 niu_enable_rx_mac(np, 0);
6005
6006 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Disable IPP\n");
6007 niu_disable_ipp(np);
6008
6009 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Stop TX channels\n");
6010 niu_stop_tx_channels(np);
6011
6012 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Stop RX channels\n");
6013 niu_stop_rx_channels(np);
6014
6015 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Reset TX channels\n");
6016 niu_reset_tx_channels(np);
6017
6018 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Reset RX channels\n");
6019 niu_reset_rx_channels(np);
6020}
6021
6022static void niu_set_irq_name(struct niu *np)
6023{
6024 int port = np->port;
6025 int i, j = 1;
6026
6027 sprintf(np->irq_name[0], "%s:MAC", np->dev->name);
6028
6029 if (port == 0) {
6030 sprintf(np->irq_name[1], "%s:MIF", np->dev->name);
6031 sprintf(np->irq_name[2], "%s:SYSERR", np->dev->name);
6032 j = 3;
6033 }
6034
6035 for (i = 0; i < np->num_ldg - j; i++) {
6036 if (i < np->num_rx_rings)
6037 sprintf(np->irq_name[i+j], "%s-rx-%d",
6038 np->dev->name, i);
6039 else if (i < np->num_tx_rings + np->num_rx_rings)
6040 sprintf(np->irq_name[i+j], "%s-tx-%d", np->dev->name,
6041 i - np->num_rx_rings);
6042 }
6043}
6044
6045static int niu_request_irq(struct niu *np)
6046{
6047 int i, j, err;
6048
6049 niu_set_irq_name(np);
6050
6051 err = 0;
6052 for (i = 0; i < np->num_ldg; i++) {
6053 struct niu_ldg *lp = &np->ldg[i];
6054
6055 err = request_irq(lp->irq, niu_interrupt, IRQF_SHARED,
6056 np->irq_name[i], lp);
6057 if (err)
6058 goto out_free_irqs;
6059
6060 }
6061
6062 return 0;
6063
6064out_free_irqs:
6065 for (j = 0; j < i; j++) {
6066 struct niu_ldg *lp = &np->ldg[j];
6067
6068 free_irq(lp->irq, lp);
6069 }
6070 return err;
6071}
6072
6073static void niu_free_irq(struct niu *np)
6074{
6075 int i;
6076
6077 for (i = 0; i < np->num_ldg; i++) {
6078 struct niu_ldg *lp = &np->ldg[i];
6079
6080 free_irq(lp->irq, lp);
6081 }
6082}
6083
6084static void niu_enable_napi(struct niu *np)
6085{
6086 int i;
6087
6088 for (i = 0; i < np->num_ldg; i++)
6089 napi_enable(&np->ldg[i].napi);
6090}
6091
6092static void niu_disable_napi(struct niu *np)
6093{
6094 int i;
6095
6096 for (i = 0; i < np->num_ldg; i++)
6097 napi_disable(&np->ldg[i].napi);
6098}
6099
6100static int niu_open(struct net_device *dev)
6101{
6102 struct niu *np = netdev_priv(dev);
6103 int err;
6104
6105 netif_carrier_off(dev);
6106
6107 err = niu_alloc_channels(np);
6108 if (err)
6109 goto out_err;
6110
6111 err = niu_enable_interrupts(np, 0);
6112 if (err)
6113 goto out_free_channels;
6114
6115 err = niu_request_irq(np);
6116 if (err)
6117 goto out_free_channels;
6118
6119 niu_enable_napi(np);
6120
6121 spin_lock_irq(&np->lock);
6122
6123 err = niu_init_hw(np);
6124 if (!err) {
6125 timer_setup(&np->timer, niu_timer, 0);
6126 np->timer.expires = jiffies + HZ;
6127
6128 err = niu_enable_interrupts(np, 1);
6129 if (err)
6130 niu_stop_hw(np);
6131 }
6132
6133 spin_unlock_irq(&np->lock);
6134
6135 if (err) {
6136 niu_disable_napi(np);
6137 goto out_free_irq;
6138 }
6139
6140 netif_tx_start_all_queues(dev);
6141
6142 if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
6143 netif_carrier_on(dev);
6144
6145 add_timer(&np->timer);
6146
6147 return 0;
6148
6149out_free_irq:
6150 niu_free_irq(np);
6151
6152out_free_channels:
6153 niu_free_channels(np);
6154
6155out_err:
6156 return err;
6157}
6158
6159static void niu_full_shutdown(struct niu *np, struct net_device *dev)
6160{
6161 cancel_work_sync(&np->reset_task);
6162
6163 niu_disable_napi(np);
6164 netif_tx_stop_all_queues(dev);
6165
6166 del_timer_sync(&np->timer);
6167
6168 spin_lock_irq(&np->lock);
6169
6170 niu_stop_hw(np);
6171
6172 spin_unlock_irq(&np->lock);
6173}
6174
6175static int niu_close(struct net_device *dev)
6176{
6177 struct niu *np = netdev_priv(dev);
6178
6179 niu_full_shutdown(np, dev);
6180
6181 niu_free_irq(np);
6182
6183 niu_free_channels(np);
6184
6185 niu_handle_led(np, 0);
6186
6187 return 0;
6188}
6189
6190static void niu_sync_xmac_stats(struct niu *np)
6191{
6192 struct niu_xmac_stats *mp = &np->mac_stats.xmac;
6193
6194 mp->tx_frames += nr64_mac(TXMAC_FRM_CNT);
6195 mp->tx_bytes += nr64_mac(TXMAC_BYTE_CNT);
6196
6197 mp->rx_link_faults += nr64_mac(LINK_FAULT_CNT);
6198 mp->rx_align_errors += nr64_mac(RXMAC_ALIGN_ERR_CNT);
6199 mp->rx_frags += nr64_mac(RXMAC_FRAG_CNT);
6200 mp->rx_mcasts += nr64_mac(RXMAC_MC_FRM_CNT);
6201 mp->rx_bcasts += nr64_mac(RXMAC_BC_FRM_CNT);
6202 mp->rx_hist_cnt1 += nr64_mac(RXMAC_HIST_CNT1);
6203 mp->rx_hist_cnt2 += nr64_mac(RXMAC_HIST_CNT2);
6204 mp->rx_hist_cnt3 += nr64_mac(RXMAC_HIST_CNT3);
6205 mp->rx_hist_cnt4 += nr64_mac(RXMAC_HIST_CNT4);
6206 mp->rx_hist_cnt5 += nr64_mac(RXMAC_HIST_CNT5);
6207 mp->rx_hist_cnt6 += nr64_mac(RXMAC_HIST_CNT6);
6208 mp->rx_hist_cnt7 += nr64_mac(RXMAC_HIST_CNT7);
6209 mp->rx_octets += nr64_mac(RXMAC_BT_CNT);
6210 mp->rx_code_violations += nr64_mac(RXMAC_CD_VIO_CNT);
6211 mp->rx_len_errors += nr64_mac(RXMAC_MPSZER_CNT);
6212 mp->rx_crc_errors += nr64_mac(RXMAC_CRC_ER_CNT);
6213}
6214
6215static void niu_sync_bmac_stats(struct niu *np)
6216{
6217 struct niu_bmac_stats *mp = &np->mac_stats.bmac;
6218
6219 mp->tx_bytes += nr64_mac(BTXMAC_BYTE_CNT);
6220 mp->tx_frames += nr64_mac(BTXMAC_FRM_CNT);
6221
6222 mp->rx_frames += nr64_mac(BRXMAC_FRAME_CNT);
6223 mp->rx_align_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
6224 mp->rx_crc_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
6225 mp->rx_len_errors += nr64_mac(BRXMAC_CODE_VIOL_ERR_CNT);
6226}
6227
6228static void niu_sync_mac_stats(struct niu *np)
6229{
6230 if (np->flags & NIU_FLAGS_XMAC)
6231 niu_sync_xmac_stats(np);
6232 else
6233 niu_sync_bmac_stats(np);
6234}
6235
6236static void niu_get_rx_stats(struct niu *np,
6237 struct rtnl_link_stats64 *stats)
6238{
6239 u64 pkts, dropped, errors, bytes;
6240 struct rx_ring_info *rx_rings;
6241 int i;
6242
6243 pkts = dropped = errors = bytes = 0;
6244
6245 rx_rings = READ_ONCE(np->rx_rings);
6246 if (!rx_rings)
6247 goto no_rings;
6248
6249 for (i = 0; i < np->num_rx_rings; i++) {
6250 struct rx_ring_info *rp = &rx_rings[i];
6251
6252 niu_sync_rx_discard_stats(np, rp, 0);
6253
6254 pkts += rp->rx_packets;
6255 bytes += rp->rx_bytes;
6256 dropped += rp->rx_dropped;
6257 errors += rp->rx_errors;
6258 }
6259
6260no_rings:
6261 stats->rx_packets = pkts;
6262 stats->rx_bytes = bytes;
6263 stats->rx_dropped = dropped;
6264 stats->rx_errors = errors;
6265}
6266
6267static void niu_get_tx_stats(struct niu *np,
6268 struct rtnl_link_stats64 *stats)
6269{
6270 u64 pkts, errors, bytes;
6271 struct tx_ring_info *tx_rings;
6272 int i;
6273
6274 pkts = errors = bytes = 0;
6275
6276 tx_rings = READ_ONCE(np->tx_rings);
6277 if (!tx_rings)
6278 goto no_rings;
6279
6280 for (i = 0; i < np->num_tx_rings; i++) {
6281 struct tx_ring_info *rp = &tx_rings[i];
6282
6283 pkts += rp->tx_packets;
6284 bytes += rp->tx_bytes;
6285 errors += rp->tx_errors;
6286 }
6287
6288no_rings:
6289 stats->tx_packets = pkts;
6290 stats->tx_bytes = bytes;
6291 stats->tx_errors = errors;
6292}
6293
6294static void niu_get_stats(struct net_device *dev,
6295 struct rtnl_link_stats64 *stats)
6296{
6297 struct niu *np = netdev_priv(dev);
6298
6299 if (netif_running(dev)) {
6300 niu_get_rx_stats(np, stats);
6301 niu_get_tx_stats(np, stats);
6302 }
6303}
6304
6305static void niu_load_hash_xmac(struct niu *np, u16 *hash)
6306{
6307 int i;
6308
6309 for (i = 0; i < 16; i++)
6310 nw64_mac(XMAC_HASH_TBL(i), hash[i]);
6311}
6312
6313static void niu_load_hash_bmac(struct niu *np, u16 *hash)
6314{
6315 int i;
6316
6317 for (i = 0; i < 16; i++)
6318 nw64_mac(BMAC_HASH_TBL(i), hash[i]);
6319}
6320
6321static void niu_load_hash(struct niu *np, u16 *hash)
6322{
6323 if (np->flags & NIU_FLAGS_XMAC)
6324 niu_load_hash_xmac(np, hash);
6325 else
6326 niu_load_hash_bmac(np, hash);
6327}
6328
6329static void niu_set_rx_mode(struct net_device *dev)
6330{
6331 struct niu *np = netdev_priv(dev);
6332 int i, alt_cnt, err;
6333 struct netdev_hw_addr *ha;
6334 unsigned long flags;
6335 u16 hash[16] = { 0, };
6336
6337 spin_lock_irqsave(&np->lock, flags);
6338 niu_enable_rx_mac(np, 0);
6339
6340 np->flags &= ~(NIU_FLAGS_MCAST | NIU_FLAGS_PROMISC);
6341 if (dev->flags & IFF_PROMISC)
6342 np->flags |= NIU_FLAGS_PROMISC;
6343 if ((dev->flags & IFF_ALLMULTI) || (!netdev_mc_empty(dev)))
6344 np->flags |= NIU_FLAGS_MCAST;
6345
6346 alt_cnt = netdev_uc_count(dev);
6347 if (alt_cnt > niu_num_alt_addr(np)) {
6348 alt_cnt = 0;
6349 np->flags |= NIU_FLAGS_PROMISC;
6350 }
6351
6352 if (alt_cnt) {
6353 int index = 0;
6354
6355 netdev_for_each_uc_addr(ha, dev) {
6356 err = niu_set_alt_mac(np, index, ha->addr);
6357 if (err)
6358 netdev_warn(dev, "Error %d adding alt mac %d\n",
6359 err, index);
6360 err = niu_enable_alt_mac(np, index, 1);
6361 if (err)
6362 netdev_warn(dev, "Error %d enabling alt mac %d\n",
6363 err, index);
6364
6365 index++;
6366 }
6367 } else {
6368 int alt_start;
6369 if (np->flags & NIU_FLAGS_XMAC)
6370 alt_start = 0;
6371 else
6372 alt_start = 1;
6373 for (i = alt_start; i < niu_num_alt_addr(np); i++) {
6374 err = niu_enable_alt_mac(np, i, 0);
6375 if (err)
6376 netdev_warn(dev, "Error %d disabling alt mac %d\n",
6377 err, i);
6378 }
6379 }
6380 if (dev->flags & IFF_ALLMULTI) {
6381 for (i = 0; i < 16; i++)
6382 hash[i] = 0xffff;
6383 } else if (!netdev_mc_empty(dev)) {
6384 netdev_for_each_mc_addr(ha, dev) {
6385 u32 crc = ether_crc_le(ETH_ALEN, ha->addr);
6386
6387 crc >>= 24;
6388 hash[crc >> 4] |= (1 << (15 - (crc & 0xf)));
6389 }
6390 }
6391
6392 if (np->flags & NIU_FLAGS_MCAST)
6393 niu_load_hash(np, hash);
6394
6395 niu_enable_rx_mac(np, 1);
6396 spin_unlock_irqrestore(&np->lock, flags);
6397}
6398
6399static int niu_set_mac_addr(struct net_device *dev, void *p)
6400{
6401 struct niu *np = netdev_priv(dev);
6402 struct sockaddr *addr = p;
6403 unsigned long flags;
6404
6405 if (!is_valid_ether_addr(addr->sa_data))
6406 return -EADDRNOTAVAIL;
6407
6408 eth_hw_addr_set(dev, addr->sa_data);
6409
6410 if (!netif_running(dev))
6411 return 0;
6412
6413 spin_lock_irqsave(&np->lock, flags);
6414 niu_enable_rx_mac(np, 0);
6415 niu_set_primary_mac(np, dev->dev_addr);
6416 niu_enable_rx_mac(np, 1);
6417 spin_unlock_irqrestore(&np->lock, flags);
6418
6419 return 0;
6420}
6421
6422static int niu_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
6423{
6424 return -EOPNOTSUPP;
6425}
6426
6427static void niu_netif_stop(struct niu *np)
6428{
6429 netif_trans_update(np->dev); /* prevent tx timeout */
6430
6431 niu_disable_napi(np);
6432
6433 netif_tx_disable(np->dev);
6434}
6435
6436static void niu_netif_start(struct niu *np)
6437{
6438 /* NOTE: unconditional netif_wake_queue is only appropriate
6439 * so long as all callers are assured to have free tx slots
6440 * (such as after niu_init_hw).
6441 */
6442 netif_tx_wake_all_queues(np->dev);
6443
6444 niu_enable_napi(np);
6445
6446 niu_enable_interrupts(np, 1);
6447}
6448
6449static void niu_reset_buffers(struct niu *np)
6450{
6451 int i, j, k, err;
6452
6453 if (np->rx_rings) {
6454 for (i = 0; i < np->num_rx_rings; i++) {
6455 struct rx_ring_info *rp = &np->rx_rings[i];
6456
6457 for (j = 0, k = 0; j < MAX_RBR_RING_SIZE; j++) {
6458 struct page *page;
6459
6460 page = rp->rxhash[j];
6461 while (page) {
6462 struct page *next = niu_next_page(page);
6463 u64 base = page->index;
6464 base = base >> RBR_DESCR_ADDR_SHIFT;
6465 rp->rbr[k++] = cpu_to_le32(base);
6466 page = next;
6467 }
6468 }
6469 for (; k < MAX_RBR_RING_SIZE; k++) {
6470 err = niu_rbr_add_page(np, rp, GFP_ATOMIC, k);
6471 if (unlikely(err))
6472 break;
6473 }
6474
6475 rp->rbr_index = rp->rbr_table_size - 1;
6476 rp->rcr_index = 0;
6477 rp->rbr_pending = 0;
6478 rp->rbr_refill_pending = 0;
6479 }
6480 }
6481 if (np->tx_rings) {
6482 for (i = 0; i < np->num_tx_rings; i++) {
6483 struct tx_ring_info *rp = &np->tx_rings[i];
6484
6485 for (j = 0; j < MAX_TX_RING_SIZE; j++) {
6486 if (rp->tx_buffs[j].skb)
6487 (void) release_tx_packet(np, rp, j);
6488 }
6489
6490 rp->pending = MAX_TX_RING_SIZE;
6491 rp->prod = 0;
6492 rp->cons = 0;
6493 rp->wrap_bit = 0;
6494 }
6495 }
6496}
6497
6498static void niu_reset_task(struct work_struct *work)
6499{
6500 struct niu *np = container_of(work, struct niu, reset_task);
6501 unsigned long flags;
6502 int err;
6503
6504 spin_lock_irqsave(&np->lock, flags);
6505 if (!netif_running(np->dev)) {
6506 spin_unlock_irqrestore(&np->lock, flags);
6507 return;
6508 }
6509
6510 spin_unlock_irqrestore(&np->lock, flags);
6511
6512 del_timer_sync(&np->timer);
6513
6514 niu_netif_stop(np);
6515
6516 spin_lock_irqsave(&np->lock, flags);
6517
6518 niu_stop_hw(np);
6519
6520 spin_unlock_irqrestore(&np->lock, flags);
6521
6522 niu_reset_buffers(np);
6523
6524 spin_lock_irqsave(&np->lock, flags);
6525
6526 err = niu_init_hw(np);
6527 if (!err) {
6528 np->timer.expires = jiffies + HZ;
6529 add_timer(&np->timer);
6530 niu_netif_start(np);
6531 }
6532
6533 spin_unlock_irqrestore(&np->lock, flags);
6534}
6535
6536static void niu_tx_timeout(struct net_device *dev, unsigned int txqueue)
6537{
6538 struct niu *np = netdev_priv(dev);
6539
6540 dev_err(np->device, "%s: Transmit timed out, resetting\n",
6541 dev->name);
6542
6543 schedule_work(&np->reset_task);
6544}
6545
6546static void niu_set_txd(struct tx_ring_info *rp, int index,
6547 u64 mapping, u64 len, u64 mark,
6548 u64 n_frags)
6549{
6550 __le64 *desc = &rp->descr[index];
6551
6552 *desc = cpu_to_le64(mark |
6553 (n_frags << TX_DESC_NUM_PTR_SHIFT) |
6554 (len << TX_DESC_TR_LEN_SHIFT) |
6555 (mapping & TX_DESC_SAD));
6556}
6557
6558static u64 niu_compute_tx_flags(struct sk_buff *skb, struct ethhdr *ehdr,
6559 u64 pad_bytes, u64 len)
6560{
6561 u16 eth_proto, eth_proto_inner;
6562 u64 csum_bits, l3off, ihl, ret;
6563 u8 ip_proto;
6564 int ipv6;
6565
6566 eth_proto = be16_to_cpu(ehdr->h_proto);
6567 eth_proto_inner = eth_proto;
6568 if (eth_proto == ETH_P_8021Q) {
6569 struct vlan_ethhdr *vp = (struct vlan_ethhdr *) ehdr;
6570 __be16 val = vp->h_vlan_encapsulated_proto;
6571
6572 eth_proto_inner = be16_to_cpu(val);
6573 }
6574
6575 ipv6 = ihl = 0;
6576 switch (skb->protocol) {
6577 case cpu_to_be16(ETH_P_IP):
6578 ip_proto = ip_hdr(skb)->protocol;
6579 ihl = ip_hdr(skb)->ihl;
6580 break;
6581 case cpu_to_be16(ETH_P_IPV6):
6582 ip_proto = ipv6_hdr(skb)->nexthdr;
6583 ihl = (40 >> 2);
6584 ipv6 = 1;
6585 break;
6586 default:
6587 ip_proto = ihl = 0;
6588 break;
6589 }
6590
6591 csum_bits = TXHDR_CSUM_NONE;
6592 if (skb->ip_summed == CHECKSUM_PARTIAL) {
6593 u64 start, stuff;
6594
6595 csum_bits = (ip_proto == IPPROTO_TCP ?
6596 TXHDR_CSUM_TCP :
6597 (ip_proto == IPPROTO_UDP ?
6598 TXHDR_CSUM_UDP : TXHDR_CSUM_SCTP));
6599
6600 start = skb_checksum_start_offset(skb) -
6601 (pad_bytes + sizeof(struct tx_pkt_hdr));
6602 stuff = start + skb->csum_offset;
6603
6604 csum_bits |= (start / 2) << TXHDR_L4START_SHIFT;
6605 csum_bits |= (stuff / 2) << TXHDR_L4STUFF_SHIFT;
6606 }
6607
6608 l3off = skb_network_offset(skb) -
6609 (pad_bytes + sizeof(struct tx_pkt_hdr));
6610
6611 ret = (((pad_bytes / 2) << TXHDR_PAD_SHIFT) |
6612 (len << TXHDR_LEN_SHIFT) |
6613 ((l3off / 2) << TXHDR_L3START_SHIFT) |
6614 (ihl << TXHDR_IHL_SHIFT) |
6615 ((eth_proto_inner < ETH_P_802_3_MIN) ? TXHDR_LLC : 0) |
6616 ((eth_proto == ETH_P_8021Q) ? TXHDR_VLAN : 0) |
6617 (ipv6 ? TXHDR_IP_VER : 0) |
6618 csum_bits);
6619
6620 return ret;
6621}
6622
6623static netdev_tx_t niu_start_xmit(struct sk_buff *skb,
6624 struct net_device *dev)
6625{
6626 struct niu *np = netdev_priv(dev);
6627 unsigned long align, headroom;
6628 struct netdev_queue *txq;
6629 struct tx_ring_info *rp;
6630 struct tx_pkt_hdr *tp;
6631 unsigned int len, nfg;
6632 struct ethhdr *ehdr;
6633 int prod, i, tlen;
6634 u64 mapping, mrk;
6635
6636 i = skb_get_queue_mapping(skb);
6637 rp = &np->tx_rings[i];
6638 txq = netdev_get_tx_queue(dev, i);
6639
6640 if (niu_tx_avail(rp) <= (skb_shinfo(skb)->nr_frags + 1)) {
6641 netif_tx_stop_queue(txq);
6642 dev_err(np->device, "%s: BUG! Tx ring full when queue awake!\n", dev->name);
6643 rp->tx_errors++;
6644 return NETDEV_TX_BUSY;
6645 }
6646
6647 if (eth_skb_pad(skb))
6648 goto out;
6649
6650 len = sizeof(struct tx_pkt_hdr) + 15;
6651 if (skb_headroom(skb) < len) {
6652 struct sk_buff *skb_new;
6653
6654 skb_new = skb_realloc_headroom(skb, len);
6655 if (!skb_new)
6656 goto out_drop;
6657 kfree_skb(skb);
6658 skb = skb_new;
6659 } else
6660 skb_orphan(skb);
6661
6662 align = ((unsigned long) skb->data & (16 - 1));
6663 headroom = align + sizeof(struct tx_pkt_hdr);
6664
6665 ehdr = (struct ethhdr *) skb->data;
6666 tp = skb_push(skb, headroom);
6667
6668 len = skb->len - sizeof(struct tx_pkt_hdr);
6669 tp->flags = cpu_to_le64(niu_compute_tx_flags(skb, ehdr, align, len));
6670 tp->resv = 0;
6671
6672 len = skb_headlen(skb);
6673 mapping = np->ops->map_single(np->device, skb->data,
6674 len, DMA_TO_DEVICE);
6675
6676 prod = rp->prod;
6677
6678 rp->tx_buffs[prod].skb = skb;
6679 rp->tx_buffs[prod].mapping = mapping;
6680
6681 mrk = TX_DESC_SOP;
6682 if (++rp->mark_counter == rp->mark_freq) {
6683 rp->mark_counter = 0;
6684 mrk |= TX_DESC_MARK;
6685 rp->mark_pending++;
6686 }
6687
6688 tlen = len;
6689 nfg = skb_shinfo(skb)->nr_frags;
6690 while (tlen > 0) {
6691 tlen -= MAX_TX_DESC_LEN;
6692 nfg++;
6693 }
6694
6695 while (len > 0) {
6696 unsigned int this_len = len;
6697
6698 if (this_len > MAX_TX_DESC_LEN)
6699 this_len = MAX_TX_DESC_LEN;
6700
6701 niu_set_txd(rp, prod, mapping, this_len, mrk, nfg);
6702 mrk = nfg = 0;
6703
6704 prod = NEXT_TX(rp, prod);
6705 mapping += this_len;
6706 len -= this_len;
6707 }
6708
6709 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
6710 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
6711
6712 len = skb_frag_size(frag);
6713 mapping = np->ops->map_page(np->device, skb_frag_page(frag),
6714 skb_frag_off(frag), len,
6715 DMA_TO_DEVICE);
6716
6717 rp->tx_buffs[prod].skb = NULL;
6718 rp->tx_buffs[prod].mapping = mapping;
6719
6720 niu_set_txd(rp, prod, mapping, len, 0, 0);
6721
6722 prod = NEXT_TX(rp, prod);
6723 }
6724
6725 if (prod < rp->prod)
6726 rp->wrap_bit ^= TX_RING_KICK_WRAP;
6727 rp->prod = prod;
6728
6729 nw64(TX_RING_KICK(rp->tx_channel), rp->wrap_bit | (prod << 3));
6730
6731 if (unlikely(niu_tx_avail(rp) <= (MAX_SKB_FRAGS + 1))) {
6732 netif_tx_stop_queue(txq);
6733 if (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp))
6734 netif_tx_wake_queue(txq);
6735 }
6736
6737out:
6738 return NETDEV_TX_OK;
6739
6740out_drop:
6741 rp->tx_errors++;
6742 kfree_skb(skb);
6743 goto out;
6744}
6745
6746static int niu_change_mtu(struct net_device *dev, int new_mtu)
6747{
6748 struct niu *np = netdev_priv(dev);
6749 int err, orig_jumbo, new_jumbo;
6750
6751 orig_jumbo = (dev->mtu > ETH_DATA_LEN);
6752 new_jumbo = (new_mtu > ETH_DATA_LEN);
6753
6754 dev->mtu = new_mtu;
6755
6756 if (!netif_running(dev) ||
6757 (orig_jumbo == new_jumbo))
6758 return 0;
6759
6760 niu_full_shutdown(np, dev);
6761
6762 niu_free_channels(np);
6763
6764 niu_enable_napi(np);
6765
6766 err = niu_alloc_channels(np);
6767 if (err)
6768 return err;
6769
6770 spin_lock_irq(&np->lock);
6771
6772 err = niu_init_hw(np);
6773 if (!err) {
6774 timer_setup(&np->timer, niu_timer, 0);
6775 np->timer.expires = jiffies + HZ;
6776
6777 err = niu_enable_interrupts(np, 1);
6778 if (err)
6779 niu_stop_hw(np);
6780 }
6781
6782 spin_unlock_irq(&np->lock);
6783
6784 if (!err) {
6785 netif_tx_start_all_queues(dev);
6786 if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
6787 netif_carrier_on(dev);
6788
6789 add_timer(&np->timer);
6790 }
6791
6792 return err;
6793}
6794
6795static void niu_get_drvinfo(struct net_device *dev,
6796 struct ethtool_drvinfo *info)
6797{
6798 struct niu *np = netdev_priv(dev);
6799 struct niu_vpd *vpd = &np->vpd;
6800
6801 strscpy(info->driver, DRV_MODULE_NAME, sizeof(info->driver));
6802 strscpy(info->version, DRV_MODULE_VERSION, sizeof(info->version));
6803 snprintf(info->fw_version, sizeof(info->fw_version), "%d.%d",
6804 vpd->fcode_major, vpd->fcode_minor);
6805 if (np->parent->plat_type != PLAT_TYPE_NIU)
6806 strscpy(info->bus_info, pci_name(np->pdev),
6807 sizeof(info->bus_info));
6808}
6809
6810static int niu_get_link_ksettings(struct net_device *dev,
6811 struct ethtool_link_ksettings *cmd)
6812{
6813 struct niu *np = netdev_priv(dev);
6814 struct niu_link_config *lp;
6815
6816 lp = &np->link_config;
6817
6818 memset(cmd, 0, sizeof(*cmd));
6819 cmd->base.phy_address = np->phy_addr;
6820 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
6821 lp->supported);
6822 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising,
6823 lp->active_advertising);
6824 cmd->base.autoneg = lp->active_autoneg;
6825 cmd->base.speed = lp->active_speed;
6826 cmd->base.duplex = lp->active_duplex;
6827 cmd->base.port = (np->flags & NIU_FLAGS_FIBER) ? PORT_FIBRE : PORT_TP;
6828
6829 return 0;
6830}
6831
6832static int niu_set_link_ksettings(struct net_device *dev,
6833 const struct ethtool_link_ksettings *cmd)
6834{
6835 struct niu *np = netdev_priv(dev);
6836 struct niu_link_config *lp = &np->link_config;
6837
6838 ethtool_convert_link_mode_to_legacy_u32(&lp->advertising,
6839 cmd->link_modes.advertising);
6840 lp->speed = cmd->base.speed;
6841 lp->duplex = cmd->base.duplex;
6842 lp->autoneg = cmd->base.autoneg;
6843 return niu_init_link(np);
6844}
6845
6846static u32 niu_get_msglevel(struct net_device *dev)
6847{
6848 struct niu *np = netdev_priv(dev);
6849 return np->msg_enable;
6850}
6851
6852static void niu_set_msglevel(struct net_device *dev, u32 value)
6853{
6854 struct niu *np = netdev_priv(dev);
6855 np->msg_enable = value;
6856}
6857
6858static int niu_nway_reset(struct net_device *dev)
6859{
6860 struct niu *np = netdev_priv(dev);
6861
6862 if (np->link_config.autoneg)
6863 return niu_init_link(np);
6864
6865 return 0;
6866}
6867
6868static int niu_get_eeprom_len(struct net_device *dev)
6869{
6870 struct niu *np = netdev_priv(dev);
6871
6872 return np->eeprom_len;
6873}
6874
6875static int niu_get_eeprom(struct net_device *dev,
6876 struct ethtool_eeprom *eeprom, u8 *data)
6877{
6878 struct niu *np = netdev_priv(dev);
6879 u32 offset, len, val;
6880
6881 offset = eeprom->offset;
6882 len = eeprom->len;
6883
6884 if (offset + len < offset)
6885 return -EINVAL;
6886 if (offset >= np->eeprom_len)
6887 return -EINVAL;
6888 if (offset + len > np->eeprom_len)
6889 len = eeprom->len = np->eeprom_len - offset;
6890
6891 if (offset & 3) {
6892 u32 b_offset, b_count;
6893
6894 b_offset = offset & 3;
6895 b_count = 4 - b_offset;
6896 if (b_count > len)
6897 b_count = len;
6898
6899 val = nr64(ESPC_NCR((offset - b_offset) / 4));
6900 memcpy(data, ((char *)&val) + b_offset, b_count);
6901 data += b_count;
6902 len -= b_count;
6903 offset += b_count;
6904 }
6905 while (len >= 4) {
6906 val = nr64(ESPC_NCR(offset / 4));
6907 memcpy(data, &val, 4);
6908 data += 4;
6909 len -= 4;
6910 offset += 4;
6911 }
6912 if (len) {
6913 val = nr64(ESPC_NCR(offset / 4));
6914 memcpy(data, &val, len);
6915 }
6916 return 0;
6917}
6918
6919static void niu_ethflow_to_l3proto(int flow_type, u8 *pid)
6920{
6921 switch (flow_type) {
6922 case TCP_V4_FLOW:
6923 case TCP_V6_FLOW:
6924 *pid = IPPROTO_TCP;
6925 break;
6926 case UDP_V4_FLOW:
6927 case UDP_V6_FLOW:
6928 *pid = IPPROTO_UDP;
6929 break;
6930 case SCTP_V4_FLOW:
6931 case SCTP_V6_FLOW:
6932 *pid = IPPROTO_SCTP;
6933 break;
6934 case AH_V4_FLOW:
6935 case AH_V6_FLOW:
6936 *pid = IPPROTO_AH;
6937 break;
6938 case ESP_V4_FLOW:
6939 case ESP_V6_FLOW:
6940 *pid = IPPROTO_ESP;
6941 break;
6942 default:
6943 *pid = 0;
6944 break;
6945 }
6946}
6947
6948static int niu_class_to_ethflow(u64 class, int *flow_type)
6949{
6950 switch (class) {
6951 case CLASS_CODE_TCP_IPV4:
6952 *flow_type = TCP_V4_FLOW;
6953 break;
6954 case CLASS_CODE_UDP_IPV4:
6955 *flow_type = UDP_V4_FLOW;
6956 break;
6957 case CLASS_CODE_AH_ESP_IPV4:
6958 *flow_type = AH_V4_FLOW;
6959 break;
6960 case CLASS_CODE_SCTP_IPV4:
6961 *flow_type = SCTP_V4_FLOW;
6962 break;
6963 case CLASS_CODE_TCP_IPV6:
6964 *flow_type = TCP_V6_FLOW;
6965 break;
6966 case CLASS_CODE_UDP_IPV6:
6967 *flow_type = UDP_V6_FLOW;
6968 break;
6969 case CLASS_CODE_AH_ESP_IPV6:
6970 *flow_type = AH_V6_FLOW;
6971 break;
6972 case CLASS_CODE_SCTP_IPV6:
6973 *flow_type = SCTP_V6_FLOW;
6974 break;
6975 case CLASS_CODE_USER_PROG1:
6976 case CLASS_CODE_USER_PROG2:
6977 case CLASS_CODE_USER_PROG3:
6978 case CLASS_CODE_USER_PROG4:
6979 *flow_type = IP_USER_FLOW;
6980 break;
6981 default:
6982 return -EINVAL;
6983 }
6984
6985 return 0;
6986}
6987
6988static int niu_ethflow_to_class(int flow_type, u64 *class)
6989{
6990 switch (flow_type) {
6991 case TCP_V4_FLOW:
6992 *class = CLASS_CODE_TCP_IPV4;
6993 break;
6994 case UDP_V4_FLOW:
6995 *class = CLASS_CODE_UDP_IPV4;
6996 break;
6997 case AH_ESP_V4_FLOW:
6998 case AH_V4_FLOW:
6999 case ESP_V4_FLOW:
7000 *class = CLASS_CODE_AH_ESP_IPV4;
7001 break;
7002 case SCTP_V4_FLOW:
7003 *class = CLASS_CODE_SCTP_IPV4;
7004 break;
7005 case TCP_V6_FLOW:
7006 *class = CLASS_CODE_TCP_IPV6;
7007 break;
7008 case UDP_V6_FLOW:
7009 *class = CLASS_CODE_UDP_IPV6;
7010 break;
7011 case AH_ESP_V6_FLOW:
7012 case AH_V6_FLOW:
7013 case ESP_V6_FLOW:
7014 *class = CLASS_CODE_AH_ESP_IPV6;
7015 break;
7016 case SCTP_V6_FLOW:
7017 *class = CLASS_CODE_SCTP_IPV6;
7018 break;
7019 default:
7020 return 0;
7021 }
7022
7023 return 1;
7024}
7025
7026static u64 niu_flowkey_to_ethflow(u64 flow_key)
7027{
7028 u64 ethflow = 0;
7029
7030 if (flow_key & FLOW_KEY_L2DA)
7031 ethflow |= RXH_L2DA;
7032 if (flow_key & FLOW_KEY_VLAN)
7033 ethflow |= RXH_VLAN;
7034 if (flow_key & FLOW_KEY_IPSA)
7035 ethflow |= RXH_IP_SRC;
7036 if (flow_key & FLOW_KEY_IPDA)
7037 ethflow |= RXH_IP_DST;
7038 if (flow_key & FLOW_KEY_PROTO)
7039 ethflow |= RXH_L3_PROTO;
7040 if (flow_key & (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_0_SHIFT))
7041 ethflow |= RXH_L4_B_0_1;
7042 if (flow_key & (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_1_SHIFT))
7043 ethflow |= RXH_L4_B_2_3;
7044
7045 return ethflow;
7046
7047}
7048
7049static int niu_ethflow_to_flowkey(u64 ethflow, u64 *flow_key)
7050{
7051 u64 key = 0;
7052
7053 if (ethflow & RXH_L2DA)
7054 key |= FLOW_KEY_L2DA;
7055 if (ethflow & RXH_VLAN)
7056 key |= FLOW_KEY_VLAN;
7057 if (ethflow & RXH_IP_SRC)
7058 key |= FLOW_KEY_IPSA;
7059 if (ethflow & RXH_IP_DST)
7060 key |= FLOW_KEY_IPDA;
7061 if (ethflow & RXH_L3_PROTO)
7062 key |= FLOW_KEY_PROTO;
7063 if (ethflow & RXH_L4_B_0_1)
7064 key |= (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_0_SHIFT);
7065 if (ethflow & RXH_L4_B_2_3)
7066 key |= (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_1_SHIFT);
7067
7068 *flow_key = key;
7069
7070 return 1;
7071
7072}
7073
7074static int niu_get_hash_opts(struct niu *np, struct ethtool_rxnfc *nfc)
7075{
7076 u64 class;
7077
7078 nfc->data = 0;
7079
7080 if (!niu_ethflow_to_class(nfc->flow_type, &class))
7081 return -EINVAL;
7082
7083 if (np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] &
7084 TCAM_KEY_DISC)
7085 nfc->data = RXH_DISCARD;
7086 else
7087 nfc->data = niu_flowkey_to_ethflow(np->parent->flow_key[class -
7088 CLASS_CODE_USER_PROG1]);
7089 return 0;
7090}
7091
7092static void niu_get_ip4fs_from_tcam_key(struct niu_tcam_entry *tp,
7093 struct ethtool_rx_flow_spec *fsp)
7094{
7095 u32 tmp;
7096 u16 prt;
7097
7098 tmp = (tp->key[3] & TCAM_V4KEY3_SADDR) >> TCAM_V4KEY3_SADDR_SHIFT;
7099 fsp->h_u.tcp_ip4_spec.ip4src = cpu_to_be32(tmp);
7100
7101 tmp = (tp->key[3] & TCAM_V4KEY3_DADDR) >> TCAM_V4KEY3_DADDR_SHIFT;
7102 fsp->h_u.tcp_ip4_spec.ip4dst = cpu_to_be32(tmp);
7103
7104 tmp = (tp->key_mask[3] & TCAM_V4KEY3_SADDR) >> TCAM_V4KEY3_SADDR_SHIFT;
7105 fsp->m_u.tcp_ip4_spec.ip4src = cpu_to_be32(tmp);
7106
7107 tmp = (tp->key_mask[3] & TCAM_V4KEY3_DADDR) >> TCAM_V4KEY3_DADDR_SHIFT;
7108 fsp->m_u.tcp_ip4_spec.ip4dst = cpu_to_be32(tmp);
7109
7110 fsp->h_u.tcp_ip4_spec.tos = (tp->key[2] & TCAM_V4KEY2_TOS) >>
7111 TCAM_V4KEY2_TOS_SHIFT;
7112 fsp->m_u.tcp_ip4_spec.tos = (tp->key_mask[2] & TCAM_V4KEY2_TOS) >>
7113 TCAM_V4KEY2_TOS_SHIFT;
7114
7115 switch (fsp->flow_type) {
7116 case TCP_V4_FLOW:
7117 case UDP_V4_FLOW:
7118 case SCTP_V4_FLOW:
7119 prt = ((tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7120 TCAM_V4KEY2_PORT_SPI_SHIFT) >> 16;
7121 fsp->h_u.tcp_ip4_spec.psrc = cpu_to_be16(prt);
7122
7123 prt = ((tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7124 TCAM_V4KEY2_PORT_SPI_SHIFT) & 0xffff;
7125 fsp->h_u.tcp_ip4_spec.pdst = cpu_to_be16(prt);
7126
7127 prt = ((tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7128 TCAM_V4KEY2_PORT_SPI_SHIFT) >> 16;
7129 fsp->m_u.tcp_ip4_spec.psrc = cpu_to_be16(prt);
7130
7131 prt = ((tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7132 TCAM_V4KEY2_PORT_SPI_SHIFT) & 0xffff;
7133 fsp->m_u.tcp_ip4_spec.pdst = cpu_to_be16(prt);
7134 break;
7135 case AH_V4_FLOW:
7136 case ESP_V4_FLOW:
7137 tmp = (tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7138 TCAM_V4KEY2_PORT_SPI_SHIFT;
7139 fsp->h_u.ah_ip4_spec.spi = cpu_to_be32(tmp);
7140
7141 tmp = (tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7142 TCAM_V4KEY2_PORT_SPI_SHIFT;
7143 fsp->m_u.ah_ip4_spec.spi = cpu_to_be32(tmp);
7144 break;
7145 case IP_USER_FLOW:
7146 tmp = (tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7147 TCAM_V4KEY2_PORT_SPI_SHIFT;
7148 fsp->h_u.usr_ip4_spec.l4_4_bytes = cpu_to_be32(tmp);
7149
7150 tmp = (tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7151 TCAM_V4KEY2_PORT_SPI_SHIFT;
7152 fsp->m_u.usr_ip4_spec.l4_4_bytes = cpu_to_be32(tmp);
7153
7154 fsp->h_u.usr_ip4_spec.proto =
7155 (tp->key[2] & TCAM_V4KEY2_PROTO) >>
7156 TCAM_V4KEY2_PROTO_SHIFT;
7157 fsp->m_u.usr_ip4_spec.proto =
7158 (tp->key_mask[2] & TCAM_V4KEY2_PROTO) >>
7159 TCAM_V4KEY2_PROTO_SHIFT;
7160
7161 fsp->h_u.usr_ip4_spec.ip_ver = ETH_RX_NFC_IP4;
7162 break;
7163 default:
7164 break;
7165 }
7166}
7167
7168static int niu_get_ethtool_tcam_entry(struct niu *np,
7169 struct ethtool_rxnfc *nfc)
7170{
7171 struct niu_parent *parent = np->parent;
7172 struct niu_tcam_entry *tp;
7173 struct ethtool_rx_flow_spec *fsp = &nfc->fs;
7174 u16 idx;
7175 u64 class;
7176 int ret = 0;
7177
7178 idx = tcam_get_index(np, (u16)nfc->fs.location);
7179
7180 tp = &parent->tcam[idx];
7181 if (!tp->valid) {
7182 netdev_info(np->dev, "niu%d: entry [%d] invalid for idx[%d]\n",
7183 parent->index, (u16)nfc->fs.location, idx);
7184 return -EINVAL;
7185 }
7186
7187 /* fill the flow spec entry */
7188 class = (tp->key[0] & TCAM_V4KEY0_CLASS_CODE) >>
7189 TCAM_V4KEY0_CLASS_CODE_SHIFT;
7190 ret = niu_class_to_ethflow(class, &fsp->flow_type);
7191 if (ret < 0) {
7192 netdev_info(np->dev, "niu%d: niu_class_to_ethflow failed\n",
7193 parent->index);
7194 goto out;
7195 }
7196
7197 if (fsp->flow_type == AH_V4_FLOW || fsp->flow_type == AH_V6_FLOW) {
7198 u32 proto = (tp->key[2] & TCAM_V4KEY2_PROTO) >>
7199 TCAM_V4KEY2_PROTO_SHIFT;
7200 if (proto == IPPROTO_ESP) {
7201 if (fsp->flow_type == AH_V4_FLOW)
7202 fsp->flow_type = ESP_V4_FLOW;
7203 else
7204 fsp->flow_type = ESP_V6_FLOW;
7205 }
7206 }
7207
7208 switch (fsp->flow_type) {
7209 case TCP_V4_FLOW:
7210 case UDP_V4_FLOW:
7211 case SCTP_V4_FLOW:
7212 case AH_V4_FLOW:
7213 case ESP_V4_FLOW:
7214 niu_get_ip4fs_from_tcam_key(tp, fsp);
7215 break;
7216 case TCP_V6_FLOW:
7217 case UDP_V6_FLOW:
7218 case SCTP_V6_FLOW:
7219 case AH_V6_FLOW:
7220 case ESP_V6_FLOW:
7221 /* Not yet implemented */
7222 ret = -EINVAL;
7223 break;
7224 case IP_USER_FLOW:
7225 niu_get_ip4fs_from_tcam_key(tp, fsp);
7226 break;
7227 default:
7228 ret = -EINVAL;
7229 break;
7230 }
7231
7232 if (ret < 0)
7233 goto out;
7234
7235 if (tp->assoc_data & TCAM_ASSOCDATA_DISC)
7236 fsp->ring_cookie = RX_CLS_FLOW_DISC;
7237 else
7238 fsp->ring_cookie = (tp->assoc_data & TCAM_ASSOCDATA_OFFSET) >>
7239 TCAM_ASSOCDATA_OFFSET_SHIFT;
7240
7241 /* put the tcam size here */
7242 nfc->data = tcam_get_size(np);
7243out:
7244 return ret;
7245}
7246
7247static int niu_get_ethtool_tcam_all(struct niu *np,
7248 struct ethtool_rxnfc *nfc,
7249 u32 *rule_locs)
7250{
7251 struct niu_parent *parent = np->parent;
7252 struct niu_tcam_entry *tp;
7253 int i, idx, cnt;
7254 unsigned long flags;
7255 int ret = 0;
7256
7257 /* put the tcam size here */
7258 nfc->data = tcam_get_size(np);
7259
7260 niu_lock_parent(np, flags);
7261 for (cnt = 0, i = 0; i < nfc->data; i++) {
7262 idx = tcam_get_index(np, i);
7263 tp = &parent->tcam[idx];
7264 if (!tp->valid)
7265 continue;
7266 if (cnt == nfc->rule_cnt) {
7267 ret = -EMSGSIZE;
7268 break;
7269 }
7270 rule_locs[cnt] = i;
7271 cnt++;
7272 }
7273 niu_unlock_parent(np, flags);
7274
7275 nfc->rule_cnt = cnt;
7276
7277 return ret;
7278}
7279
7280static int niu_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
7281 u32 *rule_locs)
7282{
7283 struct niu *np = netdev_priv(dev);
7284 int ret = 0;
7285
7286 switch (cmd->cmd) {
7287 case ETHTOOL_GRXFH:
7288 ret = niu_get_hash_opts(np, cmd);
7289 break;
7290 case ETHTOOL_GRXRINGS:
7291 cmd->data = np->num_rx_rings;
7292 break;
7293 case ETHTOOL_GRXCLSRLCNT:
7294 cmd->rule_cnt = tcam_get_valid_entry_cnt(np);
7295 break;
7296 case ETHTOOL_GRXCLSRULE:
7297 ret = niu_get_ethtool_tcam_entry(np, cmd);
7298 break;
7299 case ETHTOOL_GRXCLSRLALL:
7300 ret = niu_get_ethtool_tcam_all(np, cmd, rule_locs);
7301 break;
7302 default:
7303 ret = -EINVAL;
7304 break;
7305 }
7306
7307 return ret;
7308}
7309
7310static int niu_set_hash_opts(struct niu *np, struct ethtool_rxnfc *nfc)
7311{
7312 u64 class;
7313 u64 flow_key = 0;
7314 unsigned long flags;
7315
7316 if (!niu_ethflow_to_class(nfc->flow_type, &class))
7317 return -EINVAL;
7318
7319 if (class < CLASS_CODE_USER_PROG1 ||
7320 class > CLASS_CODE_SCTP_IPV6)
7321 return -EINVAL;
7322
7323 if (nfc->data & RXH_DISCARD) {
7324 niu_lock_parent(np, flags);
7325 flow_key = np->parent->tcam_key[class -
7326 CLASS_CODE_USER_PROG1];
7327 flow_key |= TCAM_KEY_DISC;
7328 nw64(TCAM_KEY(class - CLASS_CODE_USER_PROG1), flow_key);
7329 np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] = flow_key;
7330 niu_unlock_parent(np, flags);
7331 return 0;
7332 } else {
7333 /* Discard was set before, but is not set now */
7334 if (np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] &
7335 TCAM_KEY_DISC) {
7336 niu_lock_parent(np, flags);
7337 flow_key = np->parent->tcam_key[class -
7338 CLASS_CODE_USER_PROG1];
7339 flow_key &= ~TCAM_KEY_DISC;
7340 nw64(TCAM_KEY(class - CLASS_CODE_USER_PROG1),
7341 flow_key);
7342 np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] =
7343 flow_key;
7344 niu_unlock_parent(np, flags);
7345 }
7346 }
7347
7348 if (!niu_ethflow_to_flowkey(nfc->data, &flow_key))
7349 return -EINVAL;
7350
7351 niu_lock_parent(np, flags);
7352 nw64(FLOW_KEY(class - CLASS_CODE_USER_PROG1), flow_key);
7353 np->parent->flow_key[class - CLASS_CODE_USER_PROG1] = flow_key;
7354 niu_unlock_parent(np, flags);
7355
7356 return 0;
7357}
7358
7359static void niu_get_tcamkey_from_ip4fs(struct ethtool_rx_flow_spec *fsp,
7360 struct niu_tcam_entry *tp,
7361 int l2_rdc_tab, u64 class)
7362{
7363 u8 pid = 0;
7364 u32 sip, dip, sipm, dipm, spi, spim;
7365 u16 sport, dport, spm, dpm;
7366
7367 sip = be32_to_cpu(fsp->h_u.tcp_ip4_spec.ip4src);
7368 sipm = be32_to_cpu(fsp->m_u.tcp_ip4_spec.ip4src);
7369 dip = be32_to_cpu(fsp->h_u.tcp_ip4_spec.ip4dst);
7370 dipm = be32_to_cpu(fsp->m_u.tcp_ip4_spec.ip4dst);
7371
7372 tp->key[0] = class << TCAM_V4KEY0_CLASS_CODE_SHIFT;
7373 tp->key_mask[0] = TCAM_V4KEY0_CLASS_CODE;
7374 tp->key[1] = (u64)l2_rdc_tab << TCAM_V4KEY1_L2RDCNUM_SHIFT;
7375 tp->key_mask[1] = TCAM_V4KEY1_L2RDCNUM;
7376
7377 tp->key[3] = (u64)sip << TCAM_V4KEY3_SADDR_SHIFT;
7378 tp->key[3] |= dip;
7379
7380 tp->key_mask[3] = (u64)sipm << TCAM_V4KEY3_SADDR_SHIFT;
7381 tp->key_mask[3] |= dipm;
7382
7383 tp->key[2] |= ((u64)fsp->h_u.tcp_ip4_spec.tos <<
7384 TCAM_V4KEY2_TOS_SHIFT);
7385 tp->key_mask[2] |= ((u64)fsp->m_u.tcp_ip4_spec.tos <<
7386 TCAM_V4KEY2_TOS_SHIFT);
7387 switch (fsp->flow_type) {
7388 case TCP_V4_FLOW:
7389 case UDP_V4_FLOW:
7390 case SCTP_V4_FLOW:
7391 sport = be16_to_cpu(fsp->h_u.tcp_ip4_spec.psrc);
7392 spm = be16_to_cpu(fsp->m_u.tcp_ip4_spec.psrc);
7393 dport = be16_to_cpu(fsp->h_u.tcp_ip4_spec.pdst);
7394 dpm = be16_to_cpu(fsp->m_u.tcp_ip4_spec.pdst);
7395
7396 tp->key[2] |= (((u64)sport << 16) | dport);
7397 tp->key_mask[2] |= (((u64)spm << 16) | dpm);
7398 niu_ethflow_to_l3proto(fsp->flow_type, &pid);
7399 break;
7400 case AH_V4_FLOW:
7401 case ESP_V4_FLOW:
7402 spi = be32_to_cpu(fsp->h_u.ah_ip4_spec.spi);
7403 spim = be32_to_cpu(fsp->m_u.ah_ip4_spec.spi);
7404
7405 tp->key[2] |= spi;
7406 tp->key_mask[2] |= spim;
7407 niu_ethflow_to_l3proto(fsp->flow_type, &pid);
7408 break;
7409 case IP_USER_FLOW:
7410 spi = be32_to_cpu(fsp->h_u.usr_ip4_spec.l4_4_bytes);
7411 spim = be32_to_cpu(fsp->m_u.usr_ip4_spec.l4_4_bytes);
7412
7413 tp->key[2] |= spi;
7414 tp->key_mask[2] |= spim;
7415 pid = fsp->h_u.usr_ip4_spec.proto;
7416 break;
7417 default:
7418 break;
7419 }
7420
7421 tp->key[2] |= ((u64)pid << TCAM_V4KEY2_PROTO_SHIFT);
7422 if (pid) {
7423 tp->key_mask[2] |= TCAM_V4KEY2_PROTO;
7424 }
7425}
7426
7427static int niu_add_ethtool_tcam_entry(struct niu *np,
7428 struct ethtool_rxnfc *nfc)
7429{
7430 struct niu_parent *parent = np->parent;
7431 struct niu_tcam_entry *tp;
7432 struct ethtool_rx_flow_spec *fsp = &nfc->fs;
7433 struct niu_rdc_tables *rdc_table = &parent->rdc_group_cfg[np->port];
7434 int l2_rdc_table = rdc_table->first_table_num;
7435 u16 idx;
7436 u64 class;
7437 unsigned long flags;
7438 int err, ret;
7439
7440 ret = 0;
7441
7442 idx = nfc->fs.location;
7443 if (idx >= tcam_get_size(np))
7444 return -EINVAL;
7445
7446 if (fsp->flow_type == IP_USER_FLOW) {
7447 int i;
7448 int add_usr_cls = 0;
7449 struct ethtool_usrip4_spec *uspec = &fsp->h_u.usr_ip4_spec;
7450 struct ethtool_usrip4_spec *umask = &fsp->m_u.usr_ip4_spec;
7451
7452 if (uspec->ip_ver != ETH_RX_NFC_IP4)
7453 return -EINVAL;
7454
7455 niu_lock_parent(np, flags);
7456
7457 for (i = 0; i < NIU_L3_PROG_CLS; i++) {
7458 if (parent->l3_cls[i]) {
7459 if (uspec->proto == parent->l3_cls_pid[i]) {
7460 class = parent->l3_cls[i];
7461 parent->l3_cls_refcnt[i]++;
7462 add_usr_cls = 1;
7463 break;
7464 }
7465 } else {
7466 /* Program new user IP class */
7467 switch (i) {
7468 case 0:
7469 class = CLASS_CODE_USER_PROG1;
7470 break;
7471 case 1:
7472 class = CLASS_CODE_USER_PROG2;
7473 break;
7474 case 2:
7475 class = CLASS_CODE_USER_PROG3;
7476 break;
7477 case 3:
7478 class = CLASS_CODE_USER_PROG4;
7479 break;
7480 default:
7481 class = CLASS_CODE_UNRECOG;
7482 break;
7483 }
7484 ret = tcam_user_ip_class_set(np, class, 0,
7485 uspec->proto,
7486 uspec->tos,
7487 umask->tos);
7488 if (ret)
7489 goto out;
7490
7491 ret = tcam_user_ip_class_enable(np, class, 1);
7492 if (ret)
7493 goto out;
7494 parent->l3_cls[i] = class;
7495 parent->l3_cls_pid[i] = uspec->proto;
7496 parent->l3_cls_refcnt[i]++;
7497 add_usr_cls = 1;
7498 break;
7499 }
7500 }
7501 if (!add_usr_cls) {
7502 netdev_info(np->dev, "niu%d: %s(): Could not find/insert class for pid %d\n",
7503 parent->index, __func__, uspec->proto);
7504 ret = -EINVAL;
7505 goto out;
7506 }
7507 niu_unlock_parent(np, flags);
7508 } else {
7509 if (!niu_ethflow_to_class(fsp->flow_type, &class)) {
7510 return -EINVAL;
7511 }
7512 }
7513
7514 niu_lock_parent(np, flags);
7515
7516 idx = tcam_get_index(np, idx);
7517 tp = &parent->tcam[idx];
7518
7519 memset(tp, 0, sizeof(*tp));
7520
7521 /* fill in the tcam key and mask */
7522 switch (fsp->flow_type) {
7523 case TCP_V4_FLOW:
7524 case UDP_V4_FLOW:
7525 case SCTP_V4_FLOW:
7526 case AH_V4_FLOW:
7527 case ESP_V4_FLOW:
7528 niu_get_tcamkey_from_ip4fs(fsp, tp, l2_rdc_table, class);
7529 break;
7530 case TCP_V6_FLOW:
7531 case UDP_V6_FLOW:
7532 case SCTP_V6_FLOW:
7533 case AH_V6_FLOW:
7534 case ESP_V6_FLOW:
7535 /* Not yet implemented */
7536 netdev_info(np->dev, "niu%d: In %s(): flow %d for IPv6 not implemented\n",
7537 parent->index, __func__, fsp->flow_type);
7538 ret = -EINVAL;
7539 goto out;
7540 case IP_USER_FLOW:
7541 niu_get_tcamkey_from_ip4fs(fsp, tp, l2_rdc_table, class);
7542 break;
7543 default:
7544 netdev_info(np->dev, "niu%d: In %s(): Unknown flow type %d\n",
7545 parent->index, __func__, fsp->flow_type);
7546 ret = -EINVAL;
7547 goto out;
7548 }
7549
7550 /* fill in the assoc data */
7551 if (fsp->ring_cookie == RX_CLS_FLOW_DISC) {
7552 tp->assoc_data = TCAM_ASSOCDATA_DISC;
7553 } else {
7554 if (fsp->ring_cookie >= np->num_rx_rings) {
7555 netdev_info(np->dev, "niu%d: In %s(): Invalid RX ring %lld\n",
7556 parent->index, __func__,
7557 (long long)fsp->ring_cookie);
7558 ret = -EINVAL;
7559 goto out;
7560 }
7561 tp->assoc_data = (TCAM_ASSOCDATA_TRES_USE_OFFSET |
7562 (fsp->ring_cookie <<
7563 TCAM_ASSOCDATA_OFFSET_SHIFT));
7564 }
7565
7566 err = tcam_write(np, idx, tp->key, tp->key_mask);
7567 if (err) {
7568 ret = -EINVAL;
7569 goto out;
7570 }
7571 err = tcam_assoc_write(np, idx, tp->assoc_data);
7572 if (err) {
7573 ret = -EINVAL;
7574 goto out;
7575 }
7576
7577 /* validate the entry */
7578 tp->valid = 1;
7579 np->clas.tcam_valid_entries++;
7580out:
7581 niu_unlock_parent(np, flags);
7582
7583 return ret;
7584}
7585
7586static int niu_del_ethtool_tcam_entry(struct niu *np, u32 loc)
7587{
7588 struct niu_parent *parent = np->parent;
7589 struct niu_tcam_entry *tp;
7590 u16 idx;
7591 unsigned long flags;
7592 u64 class;
7593 int ret = 0;
7594
7595 if (loc >= tcam_get_size(np))
7596 return -EINVAL;
7597
7598 niu_lock_parent(np, flags);
7599
7600 idx = tcam_get_index(np, loc);
7601 tp = &parent->tcam[idx];
7602
7603 /* if the entry is of a user defined class, then update*/
7604 class = (tp->key[0] & TCAM_V4KEY0_CLASS_CODE) >>
7605 TCAM_V4KEY0_CLASS_CODE_SHIFT;
7606
7607 if (class >= CLASS_CODE_USER_PROG1 && class <= CLASS_CODE_USER_PROG4) {
7608 int i;
7609 for (i = 0; i < NIU_L3_PROG_CLS; i++) {
7610 if (parent->l3_cls[i] == class) {
7611 parent->l3_cls_refcnt[i]--;
7612 if (!parent->l3_cls_refcnt[i]) {
7613 /* disable class */
7614 ret = tcam_user_ip_class_enable(np,
7615 class,
7616 0);
7617 if (ret)
7618 goto out;
7619 parent->l3_cls[i] = 0;
7620 parent->l3_cls_pid[i] = 0;
7621 }
7622 break;
7623 }
7624 }
7625 if (i == NIU_L3_PROG_CLS) {
7626 netdev_info(np->dev, "niu%d: In %s(): Usr class 0x%llx not found\n",
7627 parent->index, __func__,
7628 (unsigned long long)class);
7629 ret = -EINVAL;
7630 goto out;
7631 }
7632 }
7633
7634 ret = tcam_flush(np, idx);
7635 if (ret)
7636 goto out;
7637
7638 /* invalidate the entry */
7639 tp->valid = 0;
7640 np->clas.tcam_valid_entries--;
7641out:
7642 niu_unlock_parent(np, flags);
7643
7644 return ret;
7645}
7646
7647static int niu_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
7648{
7649 struct niu *np = netdev_priv(dev);
7650 int ret = 0;
7651
7652 switch (cmd->cmd) {
7653 case ETHTOOL_SRXFH:
7654 ret = niu_set_hash_opts(np, cmd);
7655 break;
7656 case ETHTOOL_SRXCLSRLINS:
7657 ret = niu_add_ethtool_tcam_entry(np, cmd);
7658 break;
7659 case ETHTOOL_SRXCLSRLDEL:
7660 ret = niu_del_ethtool_tcam_entry(np, cmd->fs.location);
7661 break;
7662 default:
7663 ret = -EINVAL;
7664 break;
7665 }
7666
7667 return ret;
7668}
7669
7670static const struct {
7671 const char string[ETH_GSTRING_LEN];
7672} niu_xmac_stat_keys[] = {
7673 { "tx_frames" },
7674 { "tx_bytes" },
7675 { "tx_fifo_errors" },
7676 { "tx_overflow_errors" },
7677 { "tx_max_pkt_size_errors" },
7678 { "tx_underflow_errors" },
7679 { "rx_local_faults" },
7680 { "rx_remote_faults" },
7681 { "rx_link_faults" },
7682 { "rx_align_errors" },
7683 { "rx_frags" },
7684 { "rx_mcasts" },
7685 { "rx_bcasts" },
7686 { "rx_hist_cnt1" },
7687 { "rx_hist_cnt2" },
7688 { "rx_hist_cnt3" },
7689 { "rx_hist_cnt4" },
7690 { "rx_hist_cnt5" },
7691 { "rx_hist_cnt6" },
7692 { "rx_hist_cnt7" },
7693 { "rx_octets" },
7694 { "rx_code_violations" },
7695 { "rx_len_errors" },
7696 { "rx_crc_errors" },
7697 { "rx_underflows" },
7698 { "rx_overflows" },
7699 { "pause_off_state" },
7700 { "pause_on_state" },
7701 { "pause_received" },
7702};
7703
7704#define NUM_XMAC_STAT_KEYS ARRAY_SIZE(niu_xmac_stat_keys)
7705
7706static const struct {
7707 const char string[ETH_GSTRING_LEN];
7708} niu_bmac_stat_keys[] = {
7709 { "tx_underflow_errors" },
7710 { "tx_max_pkt_size_errors" },
7711 { "tx_bytes" },
7712 { "tx_frames" },
7713 { "rx_overflows" },
7714 { "rx_frames" },
7715 { "rx_align_errors" },
7716 { "rx_crc_errors" },
7717 { "rx_len_errors" },
7718 { "pause_off_state" },
7719 { "pause_on_state" },
7720 { "pause_received" },
7721};
7722
7723#define NUM_BMAC_STAT_KEYS ARRAY_SIZE(niu_bmac_stat_keys)
7724
7725static const struct {
7726 const char string[ETH_GSTRING_LEN];
7727} niu_rxchan_stat_keys[] = {
7728 { "rx_channel" },
7729 { "rx_packets" },
7730 { "rx_bytes" },
7731 { "rx_dropped" },
7732 { "rx_errors" },
7733};
7734
7735#define NUM_RXCHAN_STAT_KEYS ARRAY_SIZE(niu_rxchan_stat_keys)
7736
7737static const struct {
7738 const char string[ETH_GSTRING_LEN];
7739} niu_txchan_stat_keys[] = {
7740 { "tx_channel" },
7741 { "tx_packets" },
7742 { "tx_bytes" },
7743 { "tx_errors" },
7744};
7745
7746#define NUM_TXCHAN_STAT_KEYS ARRAY_SIZE(niu_txchan_stat_keys)
7747
7748static void niu_get_strings(struct net_device *dev, u32 stringset, u8 *data)
7749{
7750 struct niu *np = netdev_priv(dev);
7751 int i;
7752
7753 if (stringset != ETH_SS_STATS)
7754 return;
7755
7756 if (np->flags & NIU_FLAGS_XMAC) {
7757 memcpy(data, niu_xmac_stat_keys,
7758 sizeof(niu_xmac_stat_keys));
7759 data += sizeof(niu_xmac_stat_keys);
7760 } else {
7761 memcpy(data, niu_bmac_stat_keys,
7762 sizeof(niu_bmac_stat_keys));
7763 data += sizeof(niu_bmac_stat_keys);
7764 }
7765 for (i = 0; i < np->num_rx_rings; i++) {
7766 memcpy(data, niu_rxchan_stat_keys,
7767 sizeof(niu_rxchan_stat_keys));
7768 data += sizeof(niu_rxchan_stat_keys);
7769 }
7770 for (i = 0; i < np->num_tx_rings; i++) {
7771 memcpy(data, niu_txchan_stat_keys,
7772 sizeof(niu_txchan_stat_keys));
7773 data += sizeof(niu_txchan_stat_keys);
7774 }
7775}
7776
7777static int niu_get_sset_count(struct net_device *dev, int stringset)
7778{
7779 struct niu *np = netdev_priv(dev);
7780
7781 if (stringset != ETH_SS_STATS)
7782 return -EINVAL;
7783
7784 return (np->flags & NIU_FLAGS_XMAC ?
7785 NUM_XMAC_STAT_KEYS :
7786 NUM_BMAC_STAT_KEYS) +
7787 (np->num_rx_rings * NUM_RXCHAN_STAT_KEYS) +
7788 (np->num_tx_rings * NUM_TXCHAN_STAT_KEYS);
7789}
7790
7791static void niu_get_ethtool_stats(struct net_device *dev,
7792 struct ethtool_stats *stats, u64 *data)
7793{
7794 struct niu *np = netdev_priv(dev);
7795 int i;
7796
7797 niu_sync_mac_stats(np);
7798 if (np->flags & NIU_FLAGS_XMAC) {
7799 memcpy(data, &np->mac_stats.xmac,
7800 sizeof(struct niu_xmac_stats));
7801 data += (sizeof(struct niu_xmac_stats) / sizeof(u64));
7802 } else {
7803 memcpy(data, &np->mac_stats.bmac,
7804 sizeof(struct niu_bmac_stats));
7805 data += (sizeof(struct niu_bmac_stats) / sizeof(u64));
7806 }
7807 for (i = 0; i < np->num_rx_rings; i++) {
7808 struct rx_ring_info *rp = &np->rx_rings[i];
7809
7810 niu_sync_rx_discard_stats(np, rp, 0);
7811
7812 data[0] = rp->rx_channel;
7813 data[1] = rp->rx_packets;
7814 data[2] = rp->rx_bytes;
7815 data[3] = rp->rx_dropped;
7816 data[4] = rp->rx_errors;
7817 data += 5;
7818 }
7819 for (i = 0; i < np->num_tx_rings; i++) {
7820 struct tx_ring_info *rp = &np->tx_rings[i];
7821
7822 data[0] = rp->tx_channel;
7823 data[1] = rp->tx_packets;
7824 data[2] = rp->tx_bytes;
7825 data[3] = rp->tx_errors;
7826 data += 4;
7827 }
7828}
7829
7830static u64 niu_led_state_save(struct niu *np)
7831{
7832 if (np->flags & NIU_FLAGS_XMAC)
7833 return nr64_mac(XMAC_CONFIG);
7834 else
7835 return nr64_mac(BMAC_XIF_CONFIG);
7836}
7837
7838static void niu_led_state_restore(struct niu *np, u64 val)
7839{
7840 if (np->flags & NIU_FLAGS_XMAC)
7841 nw64_mac(XMAC_CONFIG, val);
7842 else
7843 nw64_mac(BMAC_XIF_CONFIG, val);
7844}
7845
7846static void niu_force_led(struct niu *np, int on)
7847{
7848 u64 val, reg, bit;
7849
7850 if (np->flags & NIU_FLAGS_XMAC) {
7851 reg = XMAC_CONFIG;
7852 bit = XMAC_CONFIG_FORCE_LED_ON;
7853 } else {
7854 reg = BMAC_XIF_CONFIG;
7855 bit = BMAC_XIF_CONFIG_LINK_LED;
7856 }
7857
7858 val = nr64_mac(reg);
7859 if (on)
7860 val |= bit;
7861 else
7862 val &= ~bit;
7863 nw64_mac(reg, val);
7864}
7865
7866static int niu_set_phys_id(struct net_device *dev,
7867 enum ethtool_phys_id_state state)
7868
7869{
7870 struct niu *np = netdev_priv(dev);
7871
7872 if (!netif_running(dev))
7873 return -EAGAIN;
7874
7875 switch (state) {
7876 case ETHTOOL_ID_ACTIVE:
7877 np->orig_led_state = niu_led_state_save(np);
7878 return 1; /* cycle on/off once per second */
7879
7880 case ETHTOOL_ID_ON:
7881 niu_force_led(np, 1);
7882 break;
7883
7884 case ETHTOOL_ID_OFF:
7885 niu_force_led(np, 0);
7886 break;
7887
7888 case ETHTOOL_ID_INACTIVE:
7889 niu_led_state_restore(np, np->orig_led_state);
7890 }
7891
7892 return 0;
7893}
7894
7895static const struct ethtool_ops niu_ethtool_ops = {
7896 .get_drvinfo = niu_get_drvinfo,
7897 .get_link = ethtool_op_get_link,
7898 .get_msglevel = niu_get_msglevel,
7899 .set_msglevel = niu_set_msglevel,
7900 .nway_reset = niu_nway_reset,
7901 .get_eeprom_len = niu_get_eeprom_len,
7902 .get_eeprom = niu_get_eeprom,
7903 .get_strings = niu_get_strings,
7904 .get_sset_count = niu_get_sset_count,
7905 .get_ethtool_stats = niu_get_ethtool_stats,
7906 .set_phys_id = niu_set_phys_id,
7907 .get_rxnfc = niu_get_nfc,
7908 .set_rxnfc = niu_set_nfc,
7909 .get_link_ksettings = niu_get_link_ksettings,
7910 .set_link_ksettings = niu_set_link_ksettings,
7911};
7912
7913static int niu_ldg_assign_ldn(struct niu *np, struct niu_parent *parent,
7914 int ldg, int ldn)
7915{
7916 if (ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX)
7917 return -EINVAL;
7918 if (ldn < 0 || ldn > LDN_MAX)
7919 return -EINVAL;
7920
7921 parent->ldg_map[ldn] = ldg;
7922
7923 if (np->parent->plat_type == PLAT_TYPE_NIU) {
7924 /* On N2 NIU, the ldn-->ldg assignments are setup and fixed by
7925 * the firmware, and we're not supposed to change them.
7926 * Validate the mapping, because if it's wrong we probably
7927 * won't get any interrupts and that's painful to debug.
7928 */
7929 if (nr64(LDG_NUM(ldn)) != ldg) {
7930 dev_err(np->device, "Port %u, mismatched LDG assignment for ldn %d, should be %d is %llu\n",
7931 np->port, ldn, ldg,
7932 (unsigned long long) nr64(LDG_NUM(ldn)));
7933 return -EINVAL;
7934 }
7935 } else
7936 nw64(LDG_NUM(ldn), ldg);
7937
7938 return 0;
7939}
7940
7941static int niu_set_ldg_timer_res(struct niu *np, int res)
7942{
7943 if (res < 0 || res > LDG_TIMER_RES_VAL)
7944 return -EINVAL;
7945
7946
7947 nw64(LDG_TIMER_RES, res);
7948
7949 return 0;
7950}
7951
7952static int niu_set_ldg_sid(struct niu *np, int ldg, int func, int vector)
7953{
7954 if ((ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX) ||
7955 (func < 0 || func > 3) ||
7956 (vector < 0 || vector > 0x1f))
7957 return -EINVAL;
7958
7959 nw64(SID(ldg), (func << SID_FUNC_SHIFT) | vector);
7960
7961 return 0;
7962}
7963
7964static int niu_pci_eeprom_read(struct niu *np, u32 addr)
7965{
7966 u64 frame, frame_base = (ESPC_PIO_STAT_READ_START |
7967 (addr << ESPC_PIO_STAT_ADDR_SHIFT));
7968 int limit;
7969
7970 if (addr > (ESPC_PIO_STAT_ADDR >> ESPC_PIO_STAT_ADDR_SHIFT))
7971 return -EINVAL;
7972
7973 frame = frame_base;
7974 nw64(ESPC_PIO_STAT, frame);
7975 limit = 64;
7976 do {
7977 udelay(5);
7978 frame = nr64(ESPC_PIO_STAT);
7979 if (frame & ESPC_PIO_STAT_READ_END)
7980 break;
7981 } while (limit--);
7982 if (!(frame & ESPC_PIO_STAT_READ_END)) {
7983 dev_err(np->device, "EEPROM read timeout frame[%llx]\n",
7984 (unsigned long long) frame);
7985 return -ENODEV;
7986 }
7987
7988 frame = frame_base;
7989 nw64(ESPC_PIO_STAT, frame);
7990 limit = 64;
7991 do {
7992 udelay(5);
7993 frame = nr64(ESPC_PIO_STAT);
7994 if (frame & ESPC_PIO_STAT_READ_END)
7995 break;
7996 } while (limit--);
7997 if (!(frame & ESPC_PIO_STAT_READ_END)) {
7998 dev_err(np->device, "EEPROM read timeout frame[%llx]\n",
7999 (unsigned long long) frame);
8000 return -ENODEV;
8001 }
8002
8003 frame = nr64(ESPC_PIO_STAT);
8004 return (frame & ESPC_PIO_STAT_DATA) >> ESPC_PIO_STAT_DATA_SHIFT;
8005}
8006
8007static int niu_pci_eeprom_read16(struct niu *np, u32 off)
8008{
8009 int err = niu_pci_eeprom_read(np, off);
8010 u16 val;
8011
8012 if (err < 0)
8013 return err;
8014 val = (err << 8);
8015 err = niu_pci_eeprom_read(np, off + 1);
8016 if (err < 0)
8017 return err;
8018 val |= (err & 0xff);
8019
8020 return val;
8021}
8022
8023static int niu_pci_eeprom_read16_swp(struct niu *np, u32 off)
8024{
8025 int err = niu_pci_eeprom_read(np, off);
8026 u16 val;
8027
8028 if (err < 0)
8029 return err;
8030
8031 val = (err & 0xff);
8032 err = niu_pci_eeprom_read(np, off + 1);
8033 if (err < 0)
8034 return err;
8035
8036 val |= (err & 0xff) << 8;
8037
8038 return val;
8039}
8040
8041static int niu_pci_vpd_get_propname(struct niu *np, u32 off, char *namebuf,
8042 int namebuf_len)
8043{
8044 int i;
8045
8046 for (i = 0; i < namebuf_len; i++) {
8047 int err = niu_pci_eeprom_read(np, off + i);
8048 if (err < 0)
8049 return err;
8050 *namebuf++ = err;
8051 if (!err)
8052 break;
8053 }
8054 if (i >= namebuf_len)
8055 return -EINVAL;
8056
8057 return i + 1;
8058}
8059
8060static void niu_vpd_parse_version(struct niu *np)
8061{
8062 struct niu_vpd *vpd = &np->vpd;
8063 int len = strlen(vpd->version) + 1;
8064 const char *s = vpd->version;
8065 int i;
8066
8067 for (i = 0; i < len - 5; i++) {
8068 if (!strncmp(s + i, "FCode ", 6))
8069 break;
8070 }
8071 if (i >= len - 5)
8072 return;
8073
8074 s += i + 5;
8075 sscanf(s, "%d.%d", &vpd->fcode_major, &vpd->fcode_minor);
8076
8077 netif_printk(np, probe, KERN_DEBUG, np->dev,
8078 "VPD_SCAN: FCODE major(%d) minor(%d)\n",
8079 vpd->fcode_major, vpd->fcode_minor);
8080 if (vpd->fcode_major > NIU_VPD_MIN_MAJOR ||
8081 (vpd->fcode_major == NIU_VPD_MIN_MAJOR &&
8082 vpd->fcode_minor >= NIU_VPD_MIN_MINOR))
8083 np->flags |= NIU_FLAGS_VPD_VALID;
8084}
8085
8086/* ESPC_PIO_EN_ENABLE must be set */
8087static int niu_pci_vpd_scan_props(struct niu *np, u32 start, u32 end)
8088{
8089 unsigned int found_mask = 0;
8090#define FOUND_MASK_MODEL 0x00000001
8091#define FOUND_MASK_BMODEL 0x00000002
8092#define FOUND_MASK_VERS 0x00000004
8093#define FOUND_MASK_MAC 0x00000008
8094#define FOUND_MASK_NMAC 0x00000010
8095#define FOUND_MASK_PHY 0x00000020
8096#define FOUND_MASK_ALL 0x0000003f
8097
8098 netif_printk(np, probe, KERN_DEBUG, np->dev,
8099 "VPD_SCAN: start[%x] end[%x]\n", start, end);
8100 while (start < end) {
8101 int len, err, prop_len;
8102 char namebuf[64];
8103 u8 *prop_buf;
8104 int max_len;
8105
8106 if (found_mask == FOUND_MASK_ALL) {
8107 niu_vpd_parse_version(np);
8108 return 1;
8109 }
8110
8111 err = niu_pci_eeprom_read(np, start + 2);
8112 if (err < 0)
8113 return err;
8114 len = err;
8115 start += 3;
8116
8117 prop_len = niu_pci_eeprom_read(np, start + 4);
8118 if (prop_len < 0)
8119 return prop_len;
8120 err = niu_pci_vpd_get_propname(np, start + 5, namebuf, 64);
8121 if (err < 0)
8122 return err;
8123
8124 prop_buf = NULL;
8125 max_len = 0;
8126 if (!strcmp(namebuf, "model")) {
8127 prop_buf = np->vpd.model;
8128 max_len = NIU_VPD_MODEL_MAX;
8129 found_mask |= FOUND_MASK_MODEL;
8130 } else if (!strcmp(namebuf, "board-model")) {
8131 prop_buf = np->vpd.board_model;
8132 max_len = NIU_VPD_BD_MODEL_MAX;
8133 found_mask |= FOUND_MASK_BMODEL;
8134 } else if (!strcmp(namebuf, "version")) {
8135 prop_buf = np->vpd.version;
8136 max_len = NIU_VPD_VERSION_MAX;
8137 found_mask |= FOUND_MASK_VERS;
8138 } else if (!strcmp(namebuf, "local-mac-address")) {
8139 prop_buf = np->vpd.local_mac;
8140 max_len = ETH_ALEN;
8141 found_mask |= FOUND_MASK_MAC;
8142 } else if (!strcmp(namebuf, "num-mac-addresses")) {
8143 prop_buf = &np->vpd.mac_num;
8144 max_len = 1;
8145 found_mask |= FOUND_MASK_NMAC;
8146 } else if (!strcmp(namebuf, "phy-type")) {
8147 prop_buf = np->vpd.phy_type;
8148 max_len = NIU_VPD_PHY_TYPE_MAX;
8149 found_mask |= FOUND_MASK_PHY;
8150 }
8151
8152 if (max_len && prop_len > max_len) {
8153 dev_err(np->device, "Property '%s' length (%d) is too long\n", namebuf, prop_len);
8154 return -EINVAL;
8155 }
8156
8157 if (prop_buf) {
8158 u32 off = start + 5 + err;
8159 int i;
8160
8161 netif_printk(np, probe, KERN_DEBUG, np->dev,
8162 "VPD_SCAN: Reading in property [%s] len[%d]\n",
8163 namebuf, prop_len);
8164 for (i = 0; i < prop_len; i++) {
8165 err = niu_pci_eeprom_read(np, off + i);
8166 if (err < 0)
8167 return err;
8168 *prop_buf++ = err;
8169 }
8170 }
8171
8172 start += len;
8173 }
8174
8175 return 0;
8176}
8177
8178/* ESPC_PIO_EN_ENABLE must be set */
8179static int niu_pci_vpd_fetch(struct niu *np, u32 start)
8180{
8181 u32 offset;
8182 int err;
8183
8184 err = niu_pci_eeprom_read16_swp(np, start + 1);
8185 if (err < 0)
8186 return err;
8187
8188 offset = err + 3;
8189
8190 while (start + offset < ESPC_EEPROM_SIZE) {
8191 u32 here = start + offset;
8192 u32 end;
8193
8194 err = niu_pci_eeprom_read(np, here);
8195 if (err < 0)
8196 return err;
8197 if (err != 0x90)
8198 return -EINVAL;
8199
8200 err = niu_pci_eeprom_read16_swp(np, here + 1);
8201 if (err < 0)
8202 return err;
8203
8204 here = start + offset + 3;
8205 end = start + offset + err;
8206
8207 offset += err;
8208
8209 err = niu_pci_vpd_scan_props(np, here, end);
8210 if (err < 0)
8211 return err;
8212 /* ret == 1 is not an error */
8213 if (err == 1)
8214 return 0;
8215 }
8216 return 0;
8217}
8218
8219/* ESPC_PIO_EN_ENABLE must be set */
8220static u32 niu_pci_vpd_offset(struct niu *np)
8221{
8222 u32 start = 0, end = ESPC_EEPROM_SIZE, ret;
8223 int err;
8224
8225 while (start < end) {
8226 ret = start;
8227
8228 /* ROM header signature? */
8229 err = niu_pci_eeprom_read16(np, start + 0);
8230 if (err != 0x55aa)
8231 return 0;
8232
8233 /* Apply offset to PCI data structure. */
8234 err = niu_pci_eeprom_read16(np, start + 23);
8235 if (err < 0)
8236 return 0;
8237 start += err;
8238
8239 /* Check for "PCIR" signature. */
8240 err = niu_pci_eeprom_read16(np, start + 0);
8241 if (err != 0x5043)
8242 return 0;
8243 err = niu_pci_eeprom_read16(np, start + 2);
8244 if (err != 0x4952)
8245 return 0;
8246
8247 /* Check for OBP image type. */
8248 err = niu_pci_eeprom_read(np, start + 20);
8249 if (err < 0)
8250 return 0;
8251 if (err != 0x01) {
8252 err = niu_pci_eeprom_read(np, ret + 2);
8253 if (err < 0)
8254 return 0;
8255
8256 start = ret + (err * 512);
8257 continue;
8258 }
8259
8260 err = niu_pci_eeprom_read16_swp(np, start + 8);
8261 if (err < 0)
8262 return err;
8263 ret += err;
8264
8265 err = niu_pci_eeprom_read(np, ret + 0);
8266 if (err != 0x82)
8267 return 0;
8268
8269 return ret;
8270 }
8271
8272 return 0;
8273}
8274
8275static int niu_phy_type_prop_decode(struct niu *np, const char *phy_prop)
8276{
8277 if (!strcmp(phy_prop, "mif")) {
8278 /* 1G copper, MII */
8279 np->flags &= ~(NIU_FLAGS_FIBER |
8280 NIU_FLAGS_10G);
8281 np->mac_xcvr = MAC_XCVR_MII;
8282 } else if (!strcmp(phy_prop, "xgf")) {
8283 /* 10G fiber, XPCS */
8284 np->flags |= (NIU_FLAGS_10G |
8285 NIU_FLAGS_FIBER);
8286 np->mac_xcvr = MAC_XCVR_XPCS;
8287 } else if (!strcmp(phy_prop, "pcs")) {
8288 /* 1G fiber, PCS */
8289 np->flags &= ~NIU_FLAGS_10G;
8290 np->flags |= NIU_FLAGS_FIBER;
8291 np->mac_xcvr = MAC_XCVR_PCS;
8292 } else if (!strcmp(phy_prop, "xgc")) {
8293 /* 10G copper, XPCS */
8294 np->flags |= NIU_FLAGS_10G;
8295 np->flags &= ~NIU_FLAGS_FIBER;
8296 np->mac_xcvr = MAC_XCVR_XPCS;
8297 } else if (!strcmp(phy_prop, "xgsd") || !strcmp(phy_prop, "gsd")) {
8298 /* 10G Serdes or 1G Serdes, default to 10G */
8299 np->flags |= NIU_FLAGS_10G;
8300 np->flags &= ~NIU_FLAGS_FIBER;
8301 np->flags |= NIU_FLAGS_XCVR_SERDES;
8302 np->mac_xcvr = MAC_XCVR_XPCS;
8303 } else {
8304 return -EINVAL;
8305 }
8306 return 0;
8307}
8308
8309static int niu_pci_vpd_get_nports(struct niu *np)
8310{
8311 int ports = 0;
8312
8313 if ((!strcmp(np->vpd.model, NIU_QGC_LP_MDL_STR)) ||
8314 (!strcmp(np->vpd.model, NIU_QGC_PEM_MDL_STR)) ||
8315 (!strcmp(np->vpd.model, NIU_MARAMBA_MDL_STR)) ||
8316 (!strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) ||
8317 (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR))) {
8318 ports = 4;
8319 } else if ((!strcmp(np->vpd.model, NIU_2XGF_LP_MDL_STR)) ||
8320 (!strcmp(np->vpd.model, NIU_2XGF_PEM_MDL_STR)) ||
8321 (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) ||
8322 (!strcmp(np->vpd.model, NIU_2XGF_MRVL_MDL_STR))) {
8323 ports = 2;
8324 }
8325
8326 return ports;
8327}
8328
8329static void niu_pci_vpd_validate(struct niu *np)
8330{
8331 struct net_device *dev = np->dev;
8332 struct niu_vpd *vpd = &np->vpd;
8333 u8 addr[ETH_ALEN];
8334 u8 val8;
8335
8336 if (!is_valid_ether_addr(&vpd->local_mac[0])) {
8337 dev_err(np->device, "VPD MAC invalid, falling back to SPROM\n");
8338
8339 np->flags &= ~NIU_FLAGS_VPD_VALID;
8340 return;
8341 }
8342
8343 if (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR) ||
8344 !strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) {
8345 np->flags |= NIU_FLAGS_10G;
8346 np->flags &= ~NIU_FLAGS_FIBER;
8347 np->flags |= NIU_FLAGS_XCVR_SERDES;
8348 np->mac_xcvr = MAC_XCVR_PCS;
8349 if (np->port > 1) {
8350 np->flags |= NIU_FLAGS_FIBER;
8351 np->flags &= ~NIU_FLAGS_10G;
8352 }
8353 if (np->flags & NIU_FLAGS_10G)
8354 np->mac_xcvr = MAC_XCVR_XPCS;
8355 } else if (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) {
8356 np->flags |= (NIU_FLAGS_10G | NIU_FLAGS_FIBER |
8357 NIU_FLAGS_HOTPLUG_PHY);
8358 } else if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
8359 dev_err(np->device, "Illegal phy string [%s]\n",
8360 np->vpd.phy_type);
8361 dev_err(np->device, "Falling back to SPROM\n");
8362 np->flags &= ~NIU_FLAGS_VPD_VALID;
8363 return;
8364 }
8365
8366 ether_addr_copy(addr, vpd->local_mac);
8367
8368 val8 = addr[5];
8369 addr[5] += np->port;
8370 if (addr[5] < val8)
8371 addr[4]++;
8372
8373 eth_hw_addr_set(dev, addr);
8374}
8375
8376static int niu_pci_probe_sprom(struct niu *np)
8377{
8378 struct net_device *dev = np->dev;
8379 u8 addr[ETH_ALEN];
8380 int len, i;
8381 u64 val, sum;
8382 u8 val8;
8383
8384 val = (nr64(ESPC_VER_IMGSZ) & ESPC_VER_IMGSZ_IMGSZ);
8385 val >>= ESPC_VER_IMGSZ_IMGSZ_SHIFT;
8386 len = val / 4;
8387
8388 np->eeprom_len = len;
8389
8390 netif_printk(np, probe, KERN_DEBUG, np->dev,
8391 "SPROM: Image size %llu\n", (unsigned long long)val);
8392
8393 sum = 0;
8394 for (i = 0; i < len; i++) {
8395 val = nr64(ESPC_NCR(i));
8396 sum += (val >> 0) & 0xff;
8397 sum += (val >> 8) & 0xff;
8398 sum += (val >> 16) & 0xff;
8399 sum += (val >> 24) & 0xff;
8400 }
8401 netif_printk(np, probe, KERN_DEBUG, np->dev,
8402 "SPROM: Checksum %x\n", (int)(sum & 0xff));
8403 if ((sum & 0xff) != 0xab) {
8404 dev_err(np->device, "Bad SPROM checksum (%x, should be 0xab)\n", (int)(sum & 0xff));
8405 return -EINVAL;
8406 }
8407
8408 val = nr64(ESPC_PHY_TYPE);
8409 switch (np->port) {
8410 case 0:
8411 val8 = (val & ESPC_PHY_TYPE_PORT0) >>
8412 ESPC_PHY_TYPE_PORT0_SHIFT;
8413 break;
8414 case 1:
8415 val8 = (val & ESPC_PHY_TYPE_PORT1) >>
8416 ESPC_PHY_TYPE_PORT1_SHIFT;
8417 break;
8418 case 2:
8419 val8 = (val & ESPC_PHY_TYPE_PORT2) >>
8420 ESPC_PHY_TYPE_PORT2_SHIFT;
8421 break;
8422 case 3:
8423 val8 = (val & ESPC_PHY_TYPE_PORT3) >>
8424 ESPC_PHY_TYPE_PORT3_SHIFT;
8425 break;
8426 default:
8427 dev_err(np->device, "Bogus port number %u\n",
8428 np->port);
8429 return -EINVAL;
8430 }
8431 netif_printk(np, probe, KERN_DEBUG, np->dev,
8432 "SPROM: PHY type %x\n", val8);
8433
8434 switch (val8) {
8435 case ESPC_PHY_TYPE_1G_COPPER:
8436 /* 1G copper, MII */
8437 np->flags &= ~(NIU_FLAGS_FIBER |
8438 NIU_FLAGS_10G);
8439 np->mac_xcvr = MAC_XCVR_MII;
8440 break;
8441
8442 case ESPC_PHY_TYPE_1G_FIBER:
8443 /* 1G fiber, PCS */
8444 np->flags &= ~NIU_FLAGS_10G;
8445 np->flags |= NIU_FLAGS_FIBER;
8446 np->mac_xcvr = MAC_XCVR_PCS;
8447 break;
8448
8449 case ESPC_PHY_TYPE_10G_COPPER:
8450 /* 10G copper, XPCS */
8451 np->flags |= NIU_FLAGS_10G;
8452 np->flags &= ~NIU_FLAGS_FIBER;
8453 np->mac_xcvr = MAC_XCVR_XPCS;
8454 break;
8455
8456 case ESPC_PHY_TYPE_10G_FIBER:
8457 /* 10G fiber, XPCS */
8458 np->flags |= (NIU_FLAGS_10G |
8459 NIU_FLAGS_FIBER);
8460 np->mac_xcvr = MAC_XCVR_XPCS;
8461 break;
8462
8463 default:
8464 dev_err(np->device, "Bogus SPROM phy type %u\n", val8);
8465 return -EINVAL;
8466 }
8467
8468 val = nr64(ESPC_MAC_ADDR0);
8469 netif_printk(np, probe, KERN_DEBUG, np->dev,
8470 "SPROM: MAC_ADDR0[%08llx]\n", (unsigned long long)val);
8471 addr[0] = (val >> 0) & 0xff;
8472 addr[1] = (val >> 8) & 0xff;
8473 addr[2] = (val >> 16) & 0xff;
8474 addr[3] = (val >> 24) & 0xff;
8475
8476 val = nr64(ESPC_MAC_ADDR1);
8477 netif_printk(np, probe, KERN_DEBUG, np->dev,
8478 "SPROM: MAC_ADDR1[%08llx]\n", (unsigned long long)val);
8479 addr[4] = (val >> 0) & 0xff;
8480 addr[5] = (val >> 8) & 0xff;
8481
8482 if (!is_valid_ether_addr(addr)) {
8483 dev_err(np->device, "SPROM MAC address invalid [ %pM ]\n",
8484 addr);
8485 return -EINVAL;
8486 }
8487
8488 val8 = addr[5];
8489 addr[5] += np->port;
8490 if (addr[5] < val8)
8491 addr[4]++;
8492
8493 eth_hw_addr_set(dev, addr);
8494
8495 val = nr64(ESPC_MOD_STR_LEN);
8496 netif_printk(np, probe, KERN_DEBUG, np->dev,
8497 "SPROM: MOD_STR_LEN[%llu]\n", (unsigned long long)val);
8498 if (val >= 8 * 4)
8499 return -EINVAL;
8500
8501 for (i = 0; i < val; i += 4) {
8502 u64 tmp = nr64(ESPC_NCR(5 + (i / 4)));
8503
8504 np->vpd.model[i + 3] = (tmp >> 0) & 0xff;
8505 np->vpd.model[i + 2] = (tmp >> 8) & 0xff;
8506 np->vpd.model[i + 1] = (tmp >> 16) & 0xff;
8507 np->vpd.model[i + 0] = (tmp >> 24) & 0xff;
8508 }
8509 np->vpd.model[val] = '\0';
8510
8511 val = nr64(ESPC_BD_MOD_STR_LEN);
8512 netif_printk(np, probe, KERN_DEBUG, np->dev,
8513 "SPROM: BD_MOD_STR_LEN[%llu]\n", (unsigned long long)val);
8514 if (val >= 4 * 4)
8515 return -EINVAL;
8516
8517 for (i = 0; i < val; i += 4) {
8518 u64 tmp = nr64(ESPC_NCR(14 + (i / 4)));
8519
8520 np->vpd.board_model[i + 3] = (tmp >> 0) & 0xff;
8521 np->vpd.board_model[i + 2] = (tmp >> 8) & 0xff;
8522 np->vpd.board_model[i + 1] = (tmp >> 16) & 0xff;
8523 np->vpd.board_model[i + 0] = (tmp >> 24) & 0xff;
8524 }
8525 np->vpd.board_model[val] = '\0';
8526
8527 np->vpd.mac_num =
8528 nr64(ESPC_NUM_PORTS_MACS) & ESPC_NUM_PORTS_MACS_VAL;
8529 netif_printk(np, probe, KERN_DEBUG, np->dev,
8530 "SPROM: NUM_PORTS_MACS[%d]\n", np->vpd.mac_num);
8531
8532 return 0;
8533}
8534
8535static int niu_get_and_validate_port(struct niu *np)
8536{
8537 struct niu_parent *parent = np->parent;
8538
8539 if (np->port <= 1)
8540 np->flags |= NIU_FLAGS_XMAC;
8541
8542 if (!parent->num_ports) {
8543 if (parent->plat_type == PLAT_TYPE_NIU) {
8544 parent->num_ports = 2;
8545 } else {
8546 parent->num_ports = niu_pci_vpd_get_nports(np);
8547 if (!parent->num_ports) {
8548 /* Fall back to SPROM as last resort.
8549 * This will fail on most cards.
8550 */
8551 parent->num_ports = nr64(ESPC_NUM_PORTS_MACS) &
8552 ESPC_NUM_PORTS_MACS_VAL;
8553
8554 /* All of the current probing methods fail on
8555 * Maramba on-board parts.
8556 */
8557 if (!parent->num_ports)
8558 parent->num_ports = 4;
8559 }
8560 }
8561 }
8562
8563 if (np->port >= parent->num_ports)
8564 return -ENODEV;
8565
8566 return 0;
8567}
8568
8569static int phy_record(struct niu_parent *parent, struct phy_probe_info *p,
8570 int dev_id_1, int dev_id_2, u8 phy_port, int type)
8571{
8572 u32 id = (dev_id_1 << 16) | dev_id_2;
8573 u8 idx;
8574
8575 if (dev_id_1 < 0 || dev_id_2 < 0)
8576 return 0;
8577 if (type == PHY_TYPE_PMA_PMD || type == PHY_TYPE_PCS) {
8578 /* Because of the NIU_PHY_ID_MASK being applied, the 8704
8579 * test covers the 8706 as well.
8580 */
8581 if (((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM8704) &&
8582 ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_MRVL88X2011))
8583 return 0;
8584 } else {
8585 if ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM5464R)
8586 return 0;
8587 }
8588
8589 pr_info("niu%d: Found PHY %08x type %s at phy_port %u\n",
8590 parent->index, id,
8591 type == PHY_TYPE_PMA_PMD ? "PMA/PMD" :
8592 type == PHY_TYPE_PCS ? "PCS" : "MII",
8593 phy_port);
8594
8595 if (p->cur[type] >= NIU_MAX_PORTS) {
8596 pr_err("Too many PHY ports\n");
8597 return -EINVAL;
8598 }
8599 idx = p->cur[type];
8600 p->phy_id[type][idx] = id;
8601 p->phy_port[type][idx] = phy_port;
8602 p->cur[type] = idx + 1;
8603 return 0;
8604}
8605
8606static int port_has_10g(struct phy_probe_info *p, int port)
8607{
8608 int i;
8609
8610 for (i = 0; i < p->cur[PHY_TYPE_PMA_PMD]; i++) {
8611 if (p->phy_port[PHY_TYPE_PMA_PMD][i] == port)
8612 return 1;
8613 }
8614 for (i = 0; i < p->cur[PHY_TYPE_PCS]; i++) {
8615 if (p->phy_port[PHY_TYPE_PCS][i] == port)
8616 return 1;
8617 }
8618
8619 return 0;
8620}
8621
8622static int count_10g_ports(struct phy_probe_info *p, int *lowest)
8623{
8624 int port, cnt;
8625
8626 cnt = 0;
8627 *lowest = 32;
8628 for (port = 8; port < 32; port++) {
8629 if (port_has_10g(p, port)) {
8630 if (!cnt)
8631 *lowest = port;
8632 cnt++;
8633 }
8634 }
8635
8636 return cnt;
8637}
8638
8639static int count_1g_ports(struct phy_probe_info *p, int *lowest)
8640{
8641 *lowest = 32;
8642 if (p->cur[PHY_TYPE_MII])
8643 *lowest = p->phy_port[PHY_TYPE_MII][0];
8644
8645 return p->cur[PHY_TYPE_MII];
8646}
8647
8648static void niu_n2_divide_channels(struct niu_parent *parent)
8649{
8650 int num_ports = parent->num_ports;
8651 int i;
8652
8653 for (i = 0; i < num_ports; i++) {
8654 parent->rxchan_per_port[i] = (16 / num_ports);
8655 parent->txchan_per_port[i] = (16 / num_ports);
8656
8657 pr_info("niu%d: Port %u [%u RX chans] [%u TX chans]\n",
8658 parent->index, i,
8659 parent->rxchan_per_port[i],
8660 parent->txchan_per_port[i]);
8661 }
8662}
8663
8664static void niu_divide_channels(struct niu_parent *parent,
8665 int num_10g, int num_1g)
8666{
8667 int num_ports = parent->num_ports;
8668 int rx_chans_per_10g, rx_chans_per_1g;
8669 int tx_chans_per_10g, tx_chans_per_1g;
8670 int i, tot_rx, tot_tx;
8671
8672 if (!num_10g || !num_1g) {
8673 rx_chans_per_10g = rx_chans_per_1g =
8674 (NIU_NUM_RXCHAN / num_ports);
8675 tx_chans_per_10g = tx_chans_per_1g =
8676 (NIU_NUM_TXCHAN / num_ports);
8677 } else {
8678 rx_chans_per_1g = NIU_NUM_RXCHAN / 8;
8679 rx_chans_per_10g = (NIU_NUM_RXCHAN -
8680 (rx_chans_per_1g * num_1g)) /
8681 num_10g;
8682
8683 tx_chans_per_1g = NIU_NUM_TXCHAN / 6;
8684 tx_chans_per_10g = (NIU_NUM_TXCHAN -
8685 (tx_chans_per_1g * num_1g)) /
8686 num_10g;
8687 }
8688
8689 tot_rx = tot_tx = 0;
8690 for (i = 0; i < num_ports; i++) {
8691 int type = phy_decode(parent->port_phy, i);
8692
8693 if (type == PORT_TYPE_10G) {
8694 parent->rxchan_per_port[i] = rx_chans_per_10g;
8695 parent->txchan_per_port[i] = tx_chans_per_10g;
8696 } else {
8697 parent->rxchan_per_port[i] = rx_chans_per_1g;
8698 parent->txchan_per_port[i] = tx_chans_per_1g;
8699 }
8700 pr_info("niu%d: Port %u [%u RX chans] [%u TX chans]\n",
8701 parent->index, i,
8702 parent->rxchan_per_port[i],
8703 parent->txchan_per_port[i]);
8704 tot_rx += parent->rxchan_per_port[i];
8705 tot_tx += parent->txchan_per_port[i];
8706 }
8707
8708 if (tot_rx > NIU_NUM_RXCHAN) {
8709 pr_err("niu%d: Too many RX channels (%d), resetting to one per port\n",
8710 parent->index, tot_rx);
8711 for (i = 0; i < num_ports; i++)
8712 parent->rxchan_per_port[i] = 1;
8713 }
8714 if (tot_tx > NIU_NUM_TXCHAN) {
8715 pr_err("niu%d: Too many TX channels (%d), resetting to one per port\n",
8716 parent->index, tot_tx);
8717 for (i = 0; i < num_ports; i++)
8718 parent->txchan_per_port[i] = 1;
8719 }
8720 if (tot_rx < NIU_NUM_RXCHAN || tot_tx < NIU_NUM_TXCHAN) {
8721 pr_warn("niu%d: Driver bug, wasted channels, RX[%d] TX[%d]\n",
8722 parent->index, tot_rx, tot_tx);
8723 }
8724}
8725
8726static void niu_divide_rdc_groups(struct niu_parent *parent,
8727 int num_10g, int num_1g)
8728{
8729 int i, num_ports = parent->num_ports;
8730 int rdc_group, rdc_groups_per_port;
8731 int rdc_channel_base;
8732
8733 rdc_group = 0;
8734 rdc_groups_per_port = NIU_NUM_RDC_TABLES / num_ports;
8735
8736 rdc_channel_base = 0;
8737
8738 for (i = 0; i < num_ports; i++) {
8739 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[i];
8740 int grp, num_channels = parent->rxchan_per_port[i];
8741 int this_channel_offset;
8742
8743 tp->first_table_num = rdc_group;
8744 tp->num_tables = rdc_groups_per_port;
8745 this_channel_offset = 0;
8746 for (grp = 0; grp < tp->num_tables; grp++) {
8747 struct rdc_table *rt = &tp->tables[grp];
8748 int slot;
8749
8750 pr_info("niu%d: Port %d RDC tbl(%d) [ ",
8751 parent->index, i, tp->first_table_num + grp);
8752 for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++) {
8753 rt->rxdma_channel[slot] =
8754 rdc_channel_base + this_channel_offset;
8755
8756 pr_cont("%d ", rt->rxdma_channel[slot]);
8757
8758 if (++this_channel_offset == num_channels)
8759 this_channel_offset = 0;
8760 }
8761 pr_cont("]\n");
8762 }
8763
8764 parent->rdc_default[i] = rdc_channel_base;
8765
8766 rdc_channel_base += num_channels;
8767 rdc_group += rdc_groups_per_port;
8768 }
8769}
8770
8771static int fill_phy_probe_info(struct niu *np, struct niu_parent *parent,
8772 struct phy_probe_info *info)
8773{
8774 unsigned long flags;
8775 int port, err;
8776
8777 memset(info, 0, sizeof(*info));
8778
8779 /* Port 0 to 7 are reserved for onboard Serdes, probe the rest. */
8780 niu_lock_parent(np, flags);
8781 err = 0;
8782 for (port = 8; port < 32; port++) {
8783 int dev_id_1, dev_id_2;
8784
8785 dev_id_1 = mdio_read(np, port,
8786 NIU_PMA_PMD_DEV_ADDR, MII_PHYSID1);
8787 dev_id_2 = mdio_read(np, port,
8788 NIU_PMA_PMD_DEV_ADDR, MII_PHYSID2);
8789 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
8790 PHY_TYPE_PMA_PMD);
8791 if (err)
8792 break;
8793 dev_id_1 = mdio_read(np, port,
8794 NIU_PCS_DEV_ADDR, MII_PHYSID1);
8795 dev_id_2 = mdio_read(np, port,
8796 NIU_PCS_DEV_ADDR, MII_PHYSID2);
8797 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
8798 PHY_TYPE_PCS);
8799 if (err)
8800 break;
8801 dev_id_1 = mii_read(np, port, MII_PHYSID1);
8802 dev_id_2 = mii_read(np, port, MII_PHYSID2);
8803 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
8804 PHY_TYPE_MII);
8805 if (err)
8806 break;
8807 }
8808 niu_unlock_parent(np, flags);
8809
8810 return err;
8811}
8812
8813static int walk_phys(struct niu *np, struct niu_parent *parent)
8814{
8815 struct phy_probe_info *info = &parent->phy_probe_info;
8816 int lowest_10g, lowest_1g;
8817 int num_10g, num_1g;
8818 u32 val;
8819 int err;
8820
8821 num_10g = num_1g = 0;
8822
8823 if (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR) ||
8824 !strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) {
8825 num_10g = 0;
8826 num_1g = 2;
8827 parent->plat_type = PLAT_TYPE_ATCA_CP3220;
8828 parent->num_ports = 4;
8829 val = (phy_encode(PORT_TYPE_1G, 0) |
8830 phy_encode(PORT_TYPE_1G, 1) |
8831 phy_encode(PORT_TYPE_1G, 2) |
8832 phy_encode(PORT_TYPE_1G, 3));
8833 } else if (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) {
8834 num_10g = 2;
8835 num_1g = 0;
8836 parent->num_ports = 2;
8837 val = (phy_encode(PORT_TYPE_10G, 0) |
8838 phy_encode(PORT_TYPE_10G, 1));
8839 } else if ((np->flags & NIU_FLAGS_XCVR_SERDES) &&
8840 (parent->plat_type == PLAT_TYPE_NIU)) {
8841 /* this is the Monza case */
8842 if (np->flags & NIU_FLAGS_10G) {
8843 val = (phy_encode(PORT_TYPE_10G, 0) |
8844 phy_encode(PORT_TYPE_10G, 1));
8845 } else {
8846 val = (phy_encode(PORT_TYPE_1G, 0) |
8847 phy_encode(PORT_TYPE_1G, 1));
8848 }
8849 } else {
8850 err = fill_phy_probe_info(np, parent, info);
8851 if (err)
8852 return err;
8853
8854 num_10g = count_10g_ports(info, &lowest_10g);
8855 num_1g = count_1g_ports(info, &lowest_1g);
8856
8857 switch ((num_10g << 4) | num_1g) {
8858 case 0x24:
8859 if (lowest_1g == 10)
8860 parent->plat_type = PLAT_TYPE_VF_P0;
8861 else if (lowest_1g == 26)
8862 parent->plat_type = PLAT_TYPE_VF_P1;
8863 else
8864 goto unknown_vg_1g_port;
8865
8866 fallthrough;
8867 case 0x22:
8868 val = (phy_encode(PORT_TYPE_10G, 0) |
8869 phy_encode(PORT_TYPE_10G, 1) |
8870 phy_encode(PORT_TYPE_1G, 2) |
8871 phy_encode(PORT_TYPE_1G, 3));
8872 break;
8873
8874 case 0x20:
8875 val = (phy_encode(PORT_TYPE_10G, 0) |
8876 phy_encode(PORT_TYPE_10G, 1));
8877 break;
8878
8879 case 0x10:
8880 val = phy_encode(PORT_TYPE_10G, np->port);
8881 break;
8882
8883 case 0x14:
8884 if (lowest_1g == 10)
8885 parent->plat_type = PLAT_TYPE_VF_P0;
8886 else if (lowest_1g == 26)
8887 parent->plat_type = PLAT_TYPE_VF_P1;
8888 else
8889 goto unknown_vg_1g_port;
8890
8891 fallthrough;
8892 case 0x13:
8893 if ((lowest_10g & 0x7) == 0)
8894 val = (phy_encode(PORT_TYPE_10G, 0) |
8895 phy_encode(PORT_TYPE_1G, 1) |
8896 phy_encode(PORT_TYPE_1G, 2) |
8897 phy_encode(PORT_TYPE_1G, 3));
8898 else
8899 val = (phy_encode(PORT_TYPE_1G, 0) |
8900 phy_encode(PORT_TYPE_10G, 1) |
8901 phy_encode(PORT_TYPE_1G, 2) |
8902 phy_encode(PORT_TYPE_1G, 3));
8903 break;
8904
8905 case 0x04:
8906 if (lowest_1g == 10)
8907 parent->plat_type = PLAT_TYPE_VF_P0;
8908 else if (lowest_1g == 26)
8909 parent->plat_type = PLAT_TYPE_VF_P1;
8910 else
8911 goto unknown_vg_1g_port;
8912
8913 val = (phy_encode(PORT_TYPE_1G, 0) |
8914 phy_encode(PORT_TYPE_1G, 1) |
8915 phy_encode(PORT_TYPE_1G, 2) |
8916 phy_encode(PORT_TYPE_1G, 3));
8917 break;
8918
8919 default:
8920 pr_err("Unsupported port config 10G[%d] 1G[%d]\n",
8921 num_10g, num_1g);
8922 return -EINVAL;
8923 }
8924 }
8925
8926 parent->port_phy = val;
8927
8928 if (parent->plat_type == PLAT_TYPE_NIU)
8929 niu_n2_divide_channels(parent);
8930 else
8931 niu_divide_channels(parent, num_10g, num_1g);
8932
8933 niu_divide_rdc_groups(parent, num_10g, num_1g);
8934
8935 return 0;
8936
8937unknown_vg_1g_port:
8938 pr_err("Cannot identify platform type, 1gport=%d\n", lowest_1g);
8939 return -EINVAL;
8940}
8941
8942static int niu_probe_ports(struct niu *np)
8943{
8944 struct niu_parent *parent = np->parent;
8945 int err, i;
8946
8947 if (parent->port_phy == PORT_PHY_UNKNOWN) {
8948 err = walk_phys(np, parent);
8949 if (err)
8950 return err;
8951
8952 niu_set_ldg_timer_res(np, 2);
8953 for (i = 0; i <= LDN_MAX; i++)
8954 niu_ldn_irq_enable(np, i, 0);
8955 }
8956
8957 if (parent->port_phy == PORT_PHY_INVALID)
8958 return -EINVAL;
8959
8960 return 0;
8961}
8962
8963static int niu_classifier_swstate_init(struct niu *np)
8964{
8965 struct niu_classifier *cp = &np->clas;
8966
8967 cp->tcam_top = (u16) np->port;
8968 cp->tcam_sz = np->parent->tcam_num_entries / np->parent->num_ports;
8969 cp->h1_init = 0xffffffff;
8970 cp->h2_init = 0xffff;
8971
8972 return fflp_early_init(np);
8973}
8974
8975static void niu_link_config_init(struct niu *np)
8976{
8977 struct niu_link_config *lp = &np->link_config;
8978
8979 lp->advertising = (ADVERTISED_10baseT_Half |
8980 ADVERTISED_10baseT_Full |
8981 ADVERTISED_100baseT_Half |
8982 ADVERTISED_100baseT_Full |
8983 ADVERTISED_1000baseT_Half |
8984 ADVERTISED_1000baseT_Full |
8985 ADVERTISED_10000baseT_Full |
8986 ADVERTISED_Autoneg);
8987 lp->speed = lp->active_speed = SPEED_INVALID;
8988 lp->duplex = DUPLEX_FULL;
8989 lp->active_duplex = DUPLEX_INVALID;
8990 lp->autoneg = 1;
8991#if 0
8992 lp->loopback_mode = LOOPBACK_MAC;
8993 lp->active_speed = SPEED_10000;
8994 lp->active_duplex = DUPLEX_FULL;
8995#else
8996 lp->loopback_mode = LOOPBACK_DISABLED;
8997#endif
8998}
8999
9000static int niu_init_mac_ipp_pcs_base(struct niu *np)
9001{
9002 switch (np->port) {
9003 case 0:
9004 np->mac_regs = np->regs + XMAC_PORT0_OFF;
9005 np->ipp_off = 0x00000;
9006 np->pcs_off = 0x04000;
9007 np->xpcs_off = 0x02000;
9008 break;
9009
9010 case 1:
9011 np->mac_regs = np->regs + XMAC_PORT1_OFF;
9012 np->ipp_off = 0x08000;
9013 np->pcs_off = 0x0a000;
9014 np->xpcs_off = 0x08000;
9015 break;
9016
9017 case 2:
9018 np->mac_regs = np->regs + BMAC_PORT2_OFF;
9019 np->ipp_off = 0x04000;
9020 np->pcs_off = 0x0e000;
9021 np->xpcs_off = ~0UL;
9022 break;
9023
9024 case 3:
9025 np->mac_regs = np->regs + BMAC_PORT3_OFF;
9026 np->ipp_off = 0x0c000;
9027 np->pcs_off = 0x12000;
9028 np->xpcs_off = ~0UL;
9029 break;
9030
9031 default:
9032 dev_err(np->device, "Port %u is invalid, cannot compute MAC block offset\n", np->port);
9033 return -EINVAL;
9034 }
9035
9036 return 0;
9037}
9038
9039static void niu_try_msix(struct niu *np, u8 *ldg_num_map)
9040{
9041 struct msix_entry msi_vec[NIU_NUM_LDG];
9042 struct niu_parent *parent = np->parent;
9043 struct pci_dev *pdev = np->pdev;
9044 int i, num_irqs;
9045 u8 first_ldg;
9046
9047 first_ldg = (NIU_NUM_LDG / parent->num_ports) * np->port;
9048 for (i = 0; i < (NIU_NUM_LDG / parent->num_ports); i++)
9049 ldg_num_map[i] = first_ldg + i;
9050
9051 num_irqs = (parent->rxchan_per_port[np->port] +
9052 parent->txchan_per_port[np->port] +
9053 (np->port == 0 ? 3 : 1));
9054 BUG_ON(num_irqs > (NIU_NUM_LDG / parent->num_ports));
9055
9056 for (i = 0; i < num_irqs; i++) {
9057 msi_vec[i].vector = 0;
9058 msi_vec[i].entry = i;
9059 }
9060
9061 num_irqs = pci_enable_msix_range(pdev, msi_vec, 1, num_irqs);
9062 if (num_irqs < 0) {
9063 np->flags &= ~NIU_FLAGS_MSIX;
9064 return;
9065 }
9066
9067 np->flags |= NIU_FLAGS_MSIX;
9068 for (i = 0; i < num_irqs; i++)
9069 np->ldg[i].irq = msi_vec[i].vector;
9070 np->num_ldg = num_irqs;
9071}
9072
9073static int niu_n2_irq_init(struct niu *np, u8 *ldg_num_map)
9074{
9075#ifdef CONFIG_SPARC64
9076 struct platform_device *op = np->op;
9077 const u32 *int_prop;
9078 int i;
9079
9080 int_prop = of_get_property(op->dev.of_node, "interrupts", NULL);
9081 if (!int_prop)
9082 return -ENODEV;
9083
9084 for (i = 0; i < op->archdata.num_irqs; i++) {
9085 ldg_num_map[i] = int_prop[i];
9086 np->ldg[i].irq = op->archdata.irqs[i];
9087 }
9088
9089 np->num_ldg = op->archdata.num_irqs;
9090
9091 return 0;
9092#else
9093 return -EINVAL;
9094#endif
9095}
9096
9097static int niu_ldg_init(struct niu *np)
9098{
9099 struct niu_parent *parent = np->parent;
9100 u8 ldg_num_map[NIU_NUM_LDG];
9101 int first_chan, num_chan;
9102 int i, err, ldg_rotor;
9103 u8 port;
9104
9105 np->num_ldg = 1;
9106 np->ldg[0].irq = np->dev->irq;
9107 if (parent->plat_type == PLAT_TYPE_NIU) {
9108 err = niu_n2_irq_init(np, ldg_num_map);
9109 if (err)
9110 return err;
9111 } else
9112 niu_try_msix(np, ldg_num_map);
9113
9114 port = np->port;
9115 for (i = 0; i < np->num_ldg; i++) {
9116 struct niu_ldg *lp = &np->ldg[i];
9117
9118 netif_napi_add(np->dev, &lp->napi, niu_poll);
9119
9120 lp->np = np;
9121 lp->ldg_num = ldg_num_map[i];
9122 lp->timer = 2; /* XXX */
9123
9124 /* On N2 NIU the firmware has setup the SID mappings so they go
9125 * to the correct values that will route the LDG to the proper
9126 * interrupt in the NCU interrupt table.
9127 */
9128 if (np->parent->plat_type != PLAT_TYPE_NIU) {
9129 err = niu_set_ldg_sid(np, lp->ldg_num, port, i);
9130 if (err)
9131 return err;
9132 }
9133 }
9134
9135 /* We adopt the LDG assignment ordering used by the N2 NIU
9136 * 'interrupt' properties because that simplifies a lot of
9137 * things. This ordering is:
9138 *
9139 * MAC
9140 * MIF (if port zero)
9141 * SYSERR (if port zero)
9142 * RX channels
9143 * TX channels
9144 */
9145
9146 ldg_rotor = 0;
9147
9148 err = niu_ldg_assign_ldn(np, parent, ldg_num_map[ldg_rotor],
9149 LDN_MAC(port));
9150 if (err)
9151 return err;
9152
9153 ldg_rotor++;
9154 if (ldg_rotor == np->num_ldg)
9155 ldg_rotor = 0;
9156
9157 if (port == 0) {
9158 err = niu_ldg_assign_ldn(np, parent,
9159 ldg_num_map[ldg_rotor],
9160 LDN_MIF);
9161 if (err)
9162 return err;
9163
9164 ldg_rotor++;
9165 if (ldg_rotor == np->num_ldg)
9166 ldg_rotor = 0;
9167
9168 err = niu_ldg_assign_ldn(np, parent,
9169 ldg_num_map[ldg_rotor],
9170 LDN_DEVICE_ERROR);
9171 if (err)
9172 return err;
9173
9174 ldg_rotor++;
9175 if (ldg_rotor == np->num_ldg)
9176 ldg_rotor = 0;
9177
9178 }
9179
9180 first_chan = 0;
9181 for (i = 0; i < port; i++)
9182 first_chan += parent->rxchan_per_port[i];
9183 num_chan = parent->rxchan_per_port[port];
9184
9185 for (i = first_chan; i < (first_chan + num_chan); i++) {
9186 err = niu_ldg_assign_ldn(np, parent,
9187 ldg_num_map[ldg_rotor],
9188 LDN_RXDMA(i));
9189 if (err)
9190 return err;
9191 ldg_rotor++;
9192 if (ldg_rotor == np->num_ldg)
9193 ldg_rotor = 0;
9194 }
9195
9196 first_chan = 0;
9197 for (i = 0; i < port; i++)
9198 first_chan += parent->txchan_per_port[i];
9199 num_chan = parent->txchan_per_port[port];
9200 for (i = first_chan; i < (first_chan + num_chan); i++) {
9201 err = niu_ldg_assign_ldn(np, parent,
9202 ldg_num_map[ldg_rotor],
9203 LDN_TXDMA(i));
9204 if (err)
9205 return err;
9206 ldg_rotor++;
9207 if (ldg_rotor == np->num_ldg)
9208 ldg_rotor = 0;
9209 }
9210
9211 return 0;
9212}
9213
9214static void niu_ldg_free(struct niu *np)
9215{
9216 if (np->flags & NIU_FLAGS_MSIX)
9217 pci_disable_msix(np->pdev);
9218}
9219
9220static int niu_get_of_props(struct niu *np)
9221{
9222#ifdef CONFIG_SPARC64
9223 struct net_device *dev = np->dev;
9224 struct device_node *dp;
9225 const char *phy_type;
9226 const u8 *mac_addr;
9227 const char *model;
9228 int prop_len;
9229
9230 if (np->parent->plat_type == PLAT_TYPE_NIU)
9231 dp = np->op->dev.of_node;
9232 else
9233 dp = pci_device_to_OF_node(np->pdev);
9234
9235 phy_type = of_get_property(dp, "phy-type", NULL);
9236 if (!phy_type) {
9237 netdev_err(dev, "%pOF: OF node lacks phy-type property\n", dp);
9238 return -EINVAL;
9239 }
9240
9241 if (!strcmp(phy_type, "none"))
9242 return -ENODEV;
9243
9244 strcpy(np->vpd.phy_type, phy_type);
9245
9246 if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
9247 netdev_err(dev, "%pOF: Illegal phy string [%s]\n",
9248 dp, np->vpd.phy_type);
9249 return -EINVAL;
9250 }
9251
9252 mac_addr = of_get_property(dp, "local-mac-address", &prop_len);
9253 if (!mac_addr) {
9254 netdev_err(dev, "%pOF: OF node lacks local-mac-address property\n",
9255 dp);
9256 return -EINVAL;
9257 }
9258 if (prop_len != dev->addr_len) {
9259 netdev_err(dev, "%pOF: OF MAC address prop len (%d) is wrong\n",
9260 dp, prop_len);
9261 }
9262 eth_hw_addr_set(dev, mac_addr);
9263 if (!is_valid_ether_addr(&dev->dev_addr[0])) {
9264 netdev_err(dev, "%pOF: OF MAC address is invalid\n", dp);
9265 netdev_err(dev, "%pOF: [ %pM ]\n", dp, dev->dev_addr);
9266 return -EINVAL;
9267 }
9268
9269 model = of_get_property(dp, "model", NULL);
9270
9271 if (model)
9272 strcpy(np->vpd.model, model);
9273
9274 if (of_property_read_bool(dp, "hot-swappable-phy")) {
9275 np->flags |= (NIU_FLAGS_10G | NIU_FLAGS_FIBER |
9276 NIU_FLAGS_HOTPLUG_PHY);
9277 }
9278
9279 return 0;
9280#else
9281 return -EINVAL;
9282#endif
9283}
9284
9285static int niu_get_invariants(struct niu *np)
9286{
9287 int err, have_props;
9288 u32 offset;
9289
9290 err = niu_get_of_props(np);
9291 if (err == -ENODEV)
9292 return err;
9293
9294 have_props = !err;
9295
9296 err = niu_init_mac_ipp_pcs_base(np);
9297 if (err)
9298 return err;
9299
9300 if (have_props) {
9301 err = niu_get_and_validate_port(np);
9302 if (err)
9303 return err;
9304
9305 } else {
9306 if (np->parent->plat_type == PLAT_TYPE_NIU)
9307 return -EINVAL;
9308
9309 nw64(ESPC_PIO_EN, ESPC_PIO_EN_ENABLE);
9310 offset = niu_pci_vpd_offset(np);
9311 netif_printk(np, probe, KERN_DEBUG, np->dev,
9312 "%s() VPD offset [%08x]\n", __func__, offset);
9313 if (offset) {
9314 err = niu_pci_vpd_fetch(np, offset);
9315 if (err < 0)
9316 return err;
9317 }
9318 nw64(ESPC_PIO_EN, 0);
9319
9320 if (np->flags & NIU_FLAGS_VPD_VALID) {
9321 niu_pci_vpd_validate(np);
9322 err = niu_get_and_validate_port(np);
9323 if (err)
9324 return err;
9325 }
9326
9327 if (!(np->flags & NIU_FLAGS_VPD_VALID)) {
9328 err = niu_get_and_validate_port(np);
9329 if (err)
9330 return err;
9331 err = niu_pci_probe_sprom(np);
9332 if (err)
9333 return err;
9334 }
9335 }
9336
9337 err = niu_probe_ports(np);
9338 if (err)
9339 return err;
9340
9341 niu_ldg_init(np);
9342
9343 niu_classifier_swstate_init(np);
9344 niu_link_config_init(np);
9345
9346 err = niu_determine_phy_disposition(np);
9347 if (!err)
9348 err = niu_init_link(np);
9349
9350 return err;
9351}
9352
9353static LIST_HEAD(niu_parent_list);
9354static DEFINE_MUTEX(niu_parent_lock);
9355static int niu_parent_index;
9356
9357static ssize_t show_port_phy(struct device *dev,
9358 struct device_attribute *attr, char *buf)
9359{
9360 struct platform_device *plat_dev = to_platform_device(dev);
9361 struct niu_parent *p = dev_get_platdata(&plat_dev->dev);
9362 u32 port_phy = p->port_phy;
9363 char *orig_buf = buf;
9364 int i;
9365
9366 if (port_phy == PORT_PHY_UNKNOWN ||
9367 port_phy == PORT_PHY_INVALID)
9368 return 0;
9369
9370 for (i = 0; i < p->num_ports; i++) {
9371 const char *type_str;
9372 int type;
9373
9374 type = phy_decode(port_phy, i);
9375 if (type == PORT_TYPE_10G)
9376 type_str = "10G";
9377 else
9378 type_str = "1G";
9379 buf += sprintf(buf,
9380 (i == 0) ? "%s" : " %s",
9381 type_str);
9382 }
9383 buf += sprintf(buf, "\n");
9384 return buf - orig_buf;
9385}
9386
9387static ssize_t show_plat_type(struct device *dev,
9388 struct device_attribute *attr, char *buf)
9389{
9390 struct platform_device *plat_dev = to_platform_device(dev);
9391 struct niu_parent *p = dev_get_platdata(&plat_dev->dev);
9392 const char *type_str;
9393
9394 switch (p->plat_type) {
9395 case PLAT_TYPE_ATLAS:
9396 type_str = "atlas";
9397 break;
9398 case PLAT_TYPE_NIU:
9399 type_str = "niu";
9400 break;
9401 case PLAT_TYPE_VF_P0:
9402 type_str = "vf_p0";
9403 break;
9404 case PLAT_TYPE_VF_P1:
9405 type_str = "vf_p1";
9406 break;
9407 default:
9408 type_str = "unknown";
9409 break;
9410 }
9411
9412 return sprintf(buf, "%s\n", type_str);
9413}
9414
9415static ssize_t __show_chan_per_port(struct device *dev,
9416 struct device_attribute *attr, char *buf,
9417 int rx)
9418{
9419 struct platform_device *plat_dev = to_platform_device(dev);
9420 struct niu_parent *p = dev_get_platdata(&plat_dev->dev);
9421 char *orig_buf = buf;
9422 u8 *arr;
9423 int i;
9424
9425 arr = (rx ? p->rxchan_per_port : p->txchan_per_port);
9426
9427 for (i = 0; i < p->num_ports; i++) {
9428 buf += sprintf(buf,
9429 (i == 0) ? "%d" : " %d",
9430 arr[i]);
9431 }
9432 buf += sprintf(buf, "\n");
9433
9434 return buf - orig_buf;
9435}
9436
9437static ssize_t show_rxchan_per_port(struct device *dev,
9438 struct device_attribute *attr, char *buf)
9439{
9440 return __show_chan_per_port(dev, attr, buf, 1);
9441}
9442
9443static ssize_t show_txchan_per_port(struct device *dev,
9444 struct device_attribute *attr, char *buf)
9445{
9446 return __show_chan_per_port(dev, attr, buf, 1);
9447}
9448
9449static ssize_t show_num_ports(struct device *dev,
9450 struct device_attribute *attr, char *buf)
9451{
9452 struct platform_device *plat_dev = to_platform_device(dev);
9453 struct niu_parent *p = dev_get_platdata(&plat_dev->dev);
9454
9455 return sprintf(buf, "%d\n", p->num_ports);
9456}
9457
9458static struct device_attribute niu_parent_attributes[] = {
9459 __ATTR(port_phy, 0444, show_port_phy, NULL),
9460 __ATTR(plat_type, 0444, show_plat_type, NULL),
9461 __ATTR(rxchan_per_port, 0444, show_rxchan_per_port, NULL),
9462 __ATTR(txchan_per_port, 0444, show_txchan_per_port, NULL),
9463 __ATTR(num_ports, 0444, show_num_ports, NULL),
9464 {}
9465};
9466
9467static struct niu_parent *niu_new_parent(struct niu *np,
9468 union niu_parent_id *id, u8 ptype)
9469{
9470 struct platform_device *plat_dev;
9471 struct niu_parent *p;
9472 int i;
9473
9474 plat_dev = platform_device_register_simple("niu-board", niu_parent_index,
9475 NULL, 0);
9476 if (IS_ERR(plat_dev))
9477 return NULL;
9478
9479 for (i = 0; niu_parent_attributes[i].attr.name; i++) {
9480 int err = device_create_file(&plat_dev->dev,
9481 &niu_parent_attributes[i]);
9482 if (err)
9483 goto fail_unregister;
9484 }
9485
9486 p = kzalloc(sizeof(*p), GFP_KERNEL);
9487 if (!p)
9488 goto fail_unregister;
9489
9490 p->index = niu_parent_index++;
9491
9492 plat_dev->dev.platform_data = p;
9493 p->plat_dev = plat_dev;
9494
9495 memcpy(&p->id, id, sizeof(*id));
9496 p->plat_type = ptype;
9497 INIT_LIST_HEAD(&p->list);
9498 atomic_set(&p->refcnt, 0);
9499 list_add(&p->list, &niu_parent_list);
9500 spin_lock_init(&p->lock);
9501
9502 p->rxdma_clock_divider = 7500;
9503
9504 p->tcam_num_entries = NIU_PCI_TCAM_ENTRIES;
9505 if (p->plat_type == PLAT_TYPE_NIU)
9506 p->tcam_num_entries = NIU_NONPCI_TCAM_ENTRIES;
9507
9508 for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
9509 int index = i - CLASS_CODE_USER_PROG1;
9510
9511 p->tcam_key[index] = TCAM_KEY_TSEL;
9512 p->flow_key[index] = (FLOW_KEY_IPSA |
9513 FLOW_KEY_IPDA |
9514 FLOW_KEY_PROTO |
9515 (FLOW_KEY_L4_BYTE12 <<
9516 FLOW_KEY_L4_0_SHIFT) |
9517 (FLOW_KEY_L4_BYTE12 <<
9518 FLOW_KEY_L4_1_SHIFT));
9519 }
9520
9521 for (i = 0; i < LDN_MAX + 1; i++)
9522 p->ldg_map[i] = LDG_INVALID;
9523
9524 return p;
9525
9526fail_unregister:
9527 platform_device_unregister(plat_dev);
9528 return NULL;
9529}
9530
9531static struct niu_parent *niu_get_parent(struct niu *np,
9532 union niu_parent_id *id, u8 ptype)
9533{
9534 struct niu_parent *p, *tmp;
9535 int port = np->port;
9536
9537 mutex_lock(&niu_parent_lock);
9538 p = NULL;
9539 list_for_each_entry(tmp, &niu_parent_list, list) {
9540 if (!memcmp(id, &tmp->id, sizeof(*id))) {
9541 p = tmp;
9542 break;
9543 }
9544 }
9545 if (!p)
9546 p = niu_new_parent(np, id, ptype);
9547
9548 if (p) {
9549 char port_name[8];
9550 int err;
9551
9552 sprintf(port_name, "port%d", port);
9553 err = sysfs_create_link(&p->plat_dev->dev.kobj,
9554 &np->device->kobj,
9555 port_name);
9556 if (!err) {
9557 p->ports[port] = np;
9558 atomic_inc(&p->refcnt);
9559 }
9560 }
9561 mutex_unlock(&niu_parent_lock);
9562
9563 return p;
9564}
9565
9566static void niu_put_parent(struct niu *np)
9567{
9568 struct niu_parent *p = np->parent;
9569 u8 port = np->port;
9570 char port_name[8];
9571
9572 BUG_ON(!p || p->ports[port] != np);
9573
9574 netif_printk(np, probe, KERN_DEBUG, np->dev,
9575 "%s() port[%u]\n", __func__, port);
9576
9577 sprintf(port_name, "port%d", port);
9578
9579 mutex_lock(&niu_parent_lock);
9580
9581 sysfs_remove_link(&p->plat_dev->dev.kobj, port_name);
9582
9583 p->ports[port] = NULL;
9584 np->parent = NULL;
9585
9586 if (atomic_dec_and_test(&p->refcnt)) {
9587 list_del(&p->list);
9588 platform_device_unregister(p->plat_dev);
9589 }
9590
9591 mutex_unlock(&niu_parent_lock);
9592}
9593
9594static void *niu_pci_alloc_coherent(struct device *dev, size_t size,
9595 u64 *handle, gfp_t flag)
9596{
9597 dma_addr_t dh;
9598 void *ret;
9599
9600 ret = dma_alloc_coherent(dev, size, &dh, flag);
9601 if (ret)
9602 *handle = dh;
9603 return ret;
9604}
9605
9606static void niu_pci_free_coherent(struct device *dev, size_t size,
9607 void *cpu_addr, u64 handle)
9608{
9609 dma_free_coherent(dev, size, cpu_addr, handle);
9610}
9611
9612static u64 niu_pci_map_page(struct device *dev, struct page *page,
9613 unsigned long offset, size_t size,
9614 enum dma_data_direction direction)
9615{
9616 return dma_map_page(dev, page, offset, size, direction);
9617}
9618
9619static void niu_pci_unmap_page(struct device *dev, u64 dma_address,
9620 size_t size, enum dma_data_direction direction)
9621{
9622 dma_unmap_page(dev, dma_address, size, direction);
9623}
9624
9625static u64 niu_pci_map_single(struct device *dev, void *cpu_addr,
9626 size_t size,
9627 enum dma_data_direction direction)
9628{
9629 return dma_map_single(dev, cpu_addr, size, direction);
9630}
9631
9632static void niu_pci_unmap_single(struct device *dev, u64 dma_address,
9633 size_t size,
9634 enum dma_data_direction direction)
9635{
9636 dma_unmap_single(dev, dma_address, size, direction);
9637}
9638
9639static const struct niu_ops niu_pci_ops = {
9640 .alloc_coherent = niu_pci_alloc_coherent,
9641 .free_coherent = niu_pci_free_coherent,
9642 .map_page = niu_pci_map_page,
9643 .unmap_page = niu_pci_unmap_page,
9644 .map_single = niu_pci_map_single,
9645 .unmap_single = niu_pci_unmap_single,
9646};
9647
9648static void niu_driver_version(void)
9649{
9650 static int niu_version_printed;
9651
9652 if (niu_version_printed++ == 0)
9653 pr_info("%s", version);
9654}
9655
9656static struct net_device *niu_alloc_and_init(struct device *gen_dev,
9657 struct pci_dev *pdev,
9658 struct platform_device *op,
9659 const struct niu_ops *ops, u8 port)
9660{
9661 struct net_device *dev;
9662 struct niu *np;
9663
9664 dev = alloc_etherdev_mq(sizeof(struct niu), NIU_NUM_TXCHAN);
9665 if (!dev)
9666 return NULL;
9667
9668 SET_NETDEV_DEV(dev, gen_dev);
9669
9670 np = netdev_priv(dev);
9671 np->dev = dev;
9672 np->pdev = pdev;
9673 np->op = op;
9674 np->device = gen_dev;
9675 np->ops = ops;
9676
9677 np->msg_enable = niu_debug;
9678
9679 spin_lock_init(&np->lock);
9680 INIT_WORK(&np->reset_task, niu_reset_task);
9681
9682 np->port = port;
9683
9684 return dev;
9685}
9686
9687static const struct net_device_ops niu_netdev_ops = {
9688 .ndo_open = niu_open,
9689 .ndo_stop = niu_close,
9690 .ndo_start_xmit = niu_start_xmit,
9691 .ndo_get_stats64 = niu_get_stats,
9692 .ndo_set_rx_mode = niu_set_rx_mode,
9693 .ndo_validate_addr = eth_validate_addr,
9694 .ndo_set_mac_address = niu_set_mac_addr,
9695 .ndo_eth_ioctl = niu_ioctl,
9696 .ndo_tx_timeout = niu_tx_timeout,
9697 .ndo_change_mtu = niu_change_mtu,
9698};
9699
9700static void niu_assign_netdev_ops(struct net_device *dev)
9701{
9702 dev->netdev_ops = &niu_netdev_ops;
9703 dev->ethtool_ops = &niu_ethtool_ops;
9704 dev->watchdog_timeo = NIU_TX_TIMEOUT;
9705}
9706
9707static void niu_device_announce(struct niu *np)
9708{
9709 struct net_device *dev = np->dev;
9710
9711 pr_info("%s: NIU Ethernet %pM\n", dev->name, dev->dev_addr);
9712
9713 if (np->parent->plat_type == PLAT_TYPE_ATCA_CP3220) {
9714 pr_info("%s: Port type[%s] mode[%s:%s] XCVR[%s] phy[%s]\n",
9715 dev->name,
9716 (np->flags & NIU_FLAGS_XMAC ? "XMAC" : "BMAC"),
9717 (np->flags & NIU_FLAGS_10G ? "10G" : "1G"),
9718 (np->flags & NIU_FLAGS_FIBER ? "RGMII FIBER" : "SERDES"),
9719 (np->mac_xcvr == MAC_XCVR_MII ? "MII" :
9720 (np->mac_xcvr == MAC_XCVR_PCS ? "PCS" : "XPCS")),
9721 np->vpd.phy_type);
9722 } else {
9723 pr_info("%s: Port type[%s] mode[%s:%s] XCVR[%s] phy[%s]\n",
9724 dev->name,
9725 (np->flags & NIU_FLAGS_XMAC ? "XMAC" : "BMAC"),
9726 (np->flags & NIU_FLAGS_10G ? "10G" : "1G"),
9727 (np->flags & NIU_FLAGS_FIBER ? "FIBER" :
9728 (np->flags & NIU_FLAGS_XCVR_SERDES ? "SERDES" :
9729 "COPPER")),
9730 (np->mac_xcvr == MAC_XCVR_MII ? "MII" :
9731 (np->mac_xcvr == MAC_XCVR_PCS ? "PCS" : "XPCS")),
9732 np->vpd.phy_type);
9733 }
9734}
9735
9736static void niu_set_basic_features(struct net_device *dev)
9737{
9738 dev->hw_features = NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_RXHASH;
9739 dev->features |= dev->hw_features | NETIF_F_RXCSUM;
9740}
9741
9742static int niu_pci_init_one(struct pci_dev *pdev,
9743 const struct pci_device_id *ent)
9744{
9745 union niu_parent_id parent_id;
9746 struct net_device *dev;
9747 struct niu *np;
9748 int err;
9749
9750 niu_driver_version();
9751
9752 err = pci_enable_device(pdev);
9753 if (err) {
9754 dev_err(&pdev->dev, "Cannot enable PCI device, aborting\n");
9755 return err;
9756 }
9757
9758 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM) ||
9759 !(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
9760 dev_err(&pdev->dev, "Cannot find proper PCI device base addresses, aborting\n");
9761 err = -ENODEV;
9762 goto err_out_disable_pdev;
9763 }
9764
9765 err = pci_request_regions(pdev, DRV_MODULE_NAME);
9766 if (err) {
9767 dev_err(&pdev->dev, "Cannot obtain PCI resources, aborting\n");
9768 goto err_out_disable_pdev;
9769 }
9770
9771 if (!pci_is_pcie(pdev)) {
9772 dev_err(&pdev->dev, "Cannot find PCI Express capability, aborting\n");
9773 err = -ENODEV;
9774 goto err_out_free_res;
9775 }
9776
9777 dev = niu_alloc_and_init(&pdev->dev, pdev, NULL,
9778 &niu_pci_ops, PCI_FUNC(pdev->devfn));
9779 if (!dev) {
9780 err = -ENOMEM;
9781 goto err_out_free_res;
9782 }
9783 np = netdev_priv(dev);
9784
9785 memset(&parent_id, 0, sizeof(parent_id));
9786 parent_id.pci.domain = pci_domain_nr(pdev->bus);
9787 parent_id.pci.bus = pdev->bus->number;
9788 parent_id.pci.device = PCI_SLOT(pdev->devfn);
9789
9790 np->parent = niu_get_parent(np, &parent_id,
9791 PLAT_TYPE_ATLAS);
9792 if (!np->parent) {
9793 err = -ENOMEM;
9794 goto err_out_free_dev;
9795 }
9796
9797 pcie_capability_clear_and_set_word(pdev, PCI_EXP_DEVCTL,
9798 PCI_EXP_DEVCTL_NOSNOOP_EN,
9799 PCI_EXP_DEVCTL_CERE | PCI_EXP_DEVCTL_NFERE |
9800 PCI_EXP_DEVCTL_FERE | PCI_EXP_DEVCTL_URRE |
9801 PCI_EXP_DEVCTL_RELAX_EN);
9802
9803 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(44));
9804 if (!err)
9805 dev->features |= NETIF_F_HIGHDMA;
9806 if (err) {
9807 err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
9808 if (err) {
9809 dev_err(&pdev->dev, "No usable DMA configuration, aborting\n");
9810 goto err_out_release_parent;
9811 }
9812 }
9813
9814 niu_set_basic_features(dev);
9815
9816 dev->priv_flags |= IFF_UNICAST_FLT;
9817
9818 np->regs = pci_ioremap_bar(pdev, 0);
9819 if (!np->regs) {
9820 dev_err(&pdev->dev, "Cannot map device registers, aborting\n");
9821 err = -ENOMEM;
9822 goto err_out_release_parent;
9823 }
9824
9825 pci_set_master(pdev);
9826 pci_save_state(pdev);
9827
9828 dev->irq = pdev->irq;
9829
9830 /* MTU range: 68 - 9216 */
9831 dev->min_mtu = ETH_MIN_MTU;
9832 dev->max_mtu = NIU_MAX_MTU;
9833
9834 niu_assign_netdev_ops(dev);
9835
9836 err = niu_get_invariants(np);
9837 if (err) {
9838 if (err != -ENODEV)
9839 dev_err(&pdev->dev, "Problem fetching invariants of chip, aborting\n");
9840 goto err_out_iounmap;
9841 }
9842
9843 err = register_netdev(dev);
9844 if (err) {
9845 dev_err(&pdev->dev, "Cannot register net device, aborting\n");
9846 goto err_out_iounmap;
9847 }
9848
9849 pci_set_drvdata(pdev, dev);
9850
9851 niu_device_announce(np);
9852
9853 return 0;
9854
9855err_out_iounmap:
9856 if (np->regs) {
9857 iounmap(np->regs);
9858 np->regs = NULL;
9859 }
9860
9861err_out_release_parent:
9862 niu_put_parent(np);
9863
9864err_out_free_dev:
9865 free_netdev(dev);
9866
9867err_out_free_res:
9868 pci_release_regions(pdev);
9869
9870err_out_disable_pdev:
9871 pci_disable_device(pdev);
9872
9873 return err;
9874}
9875
9876static void niu_pci_remove_one(struct pci_dev *pdev)
9877{
9878 struct net_device *dev = pci_get_drvdata(pdev);
9879
9880 if (dev) {
9881 struct niu *np = netdev_priv(dev);
9882
9883 unregister_netdev(dev);
9884 if (np->regs) {
9885 iounmap(np->regs);
9886 np->regs = NULL;
9887 }
9888
9889 niu_ldg_free(np);
9890
9891 niu_put_parent(np);
9892
9893 free_netdev(dev);
9894 pci_release_regions(pdev);
9895 pci_disable_device(pdev);
9896 }
9897}
9898
9899static int __maybe_unused niu_suspend(struct device *dev_d)
9900{
9901 struct net_device *dev = dev_get_drvdata(dev_d);
9902 struct niu *np = netdev_priv(dev);
9903 unsigned long flags;
9904
9905 if (!netif_running(dev))
9906 return 0;
9907
9908 flush_work(&np->reset_task);
9909 niu_netif_stop(np);
9910
9911 del_timer_sync(&np->timer);
9912
9913 spin_lock_irqsave(&np->lock, flags);
9914 niu_enable_interrupts(np, 0);
9915 spin_unlock_irqrestore(&np->lock, flags);
9916
9917 netif_device_detach(dev);
9918
9919 spin_lock_irqsave(&np->lock, flags);
9920 niu_stop_hw(np);
9921 spin_unlock_irqrestore(&np->lock, flags);
9922
9923 return 0;
9924}
9925
9926static int __maybe_unused niu_resume(struct device *dev_d)
9927{
9928 struct net_device *dev = dev_get_drvdata(dev_d);
9929 struct niu *np = netdev_priv(dev);
9930 unsigned long flags;
9931 int err;
9932
9933 if (!netif_running(dev))
9934 return 0;
9935
9936 netif_device_attach(dev);
9937
9938 spin_lock_irqsave(&np->lock, flags);
9939
9940 err = niu_init_hw(np);
9941 if (!err) {
9942 np->timer.expires = jiffies + HZ;
9943 add_timer(&np->timer);
9944 niu_netif_start(np);
9945 }
9946
9947 spin_unlock_irqrestore(&np->lock, flags);
9948
9949 return err;
9950}
9951
9952static SIMPLE_DEV_PM_OPS(niu_pm_ops, niu_suspend, niu_resume);
9953
9954static struct pci_driver niu_pci_driver = {
9955 .name = DRV_MODULE_NAME,
9956 .id_table = niu_pci_tbl,
9957 .probe = niu_pci_init_one,
9958 .remove = niu_pci_remove_one,
9959 .driver.pm = &niu_pm_ops,
9960};
9961
9962#ifdef CONFIG_SPARC64
9963static void *niu_phys_alloc_coherent(struct device *dev, size_t size,
9964 u64 *dma_addr, gfp_t flag)
9965{
9966 unsigned long order = get_order(size);
9967 unsigned long page = __get_free_pages(flag, order);
9968
9969 if (page == 0UL)
9970 return NULL;
9971 memset((char *)page, 0, PAGE_SIZE << order);
9972 *dma_addr = __pa(page);
9973
9974 return (void *) page;
9975}
9976
9977static void niu_phys_free_coherent(struct device *dev, size_t size,
9978 void *cpu_addr, u64 handle)
9979{
9980 unsigned long order = get_order(size);
9981
9982 free_pages((unsigned long) cpu_addr, order);
9983}
9984
9985static u64 niu_phys_map_page(struct device *dev, struct page *page,
9986 unsigned long offset, size_t size,
9987 enum dma_data_direction direction)
9988{
9989 return page_to_phys(page) + offset;
9990}
9991
9992static void niu_phys_unmap_page(struct device *dev, u64 dma_address,
9993 size_t size, enum dma_data_direction direction)
9994{
9995 /* Nothing to do. */
9996}
9997
9998static u64 niu_phys_map_single(struct device *dev, void *cpu_addr,
9999 size_t size,
10000 enum dma_data_direction direction)
10001{
10002 return __pa(cpu_addr);
10003}
10004
10005static void niu_phys_unmap_single(struct device *dev, u64 dma_address,
10006 size_t size,
10007 enum dma_data_direction direction)
10008{
10009 /* Nothing to do. */
10010}
10011
10012static const struct niu_ops niu_phys_ops = {
10013 .alloc_coherent = niu_phys_alloc_coherent,
10014 .free_coherent = niu_phys_free_coherent,
10015 .map_page = niu_phys_map_page,
10016 .unmap_page = niu_phys_unmap_page,
10017 .map_single = niu_phys_map_single,
10018 .unmap_single = niu_phys_unmap_single,
10019};
10020
10021static int niu_of_probe(struct platform_device *op)
10022{
10023 union niu_parent_id parent_id;
10024 struct net_device *dev;
10025 struct niu *np;
10026 const u32 *reg;
10027 int err;
10028
10029 niu_driver_version();
10030
10031 reg = of_get_property(op->dev.of_node, "reg", NULL);
10032 if (!reg) {
10033 dev_err(&op->dev, "%pOF: No 'reg' property, aborting\n",
10034 op->dev.of_node);
10035 return -ENODEV;
10036 }
10037
10038 dev = niu_alloc_and_init(&op->dev, NULL, op,
10039 &niu_phys_ops, reg[0] & 0x1);
10040 if (!dev) {
10041 err = -ENOMEM;
10042 goto err_out;
10043 }
10044 np = netdev_priv(dev);
10045
10046 memset(&parent_id, 0, sizeof(parent_id));
10047 parent_id.of = of_get_parent(op->dev.of_node);
10048
10049 np->parent = niu_get_parent(np, &parent_id,
10050 PLAT_TYPE_NIU);
10051 if (!np->parent) {
10052 err = -ENOMEM;
10053 goto err_out_free_dev;
10054 }
10055
10056 niu_set_basic_features(dev);
10057
10058 np->regs = of_ioremap(&op->resource[1], 0,
10059 resource_size(&op->resource[1]),
10060 "niu regs");
10061 if (!np->regs) {
10062 dev_err(&op->dev, "Cannot map device registers, aborting\n");
10063 err = -ENOMEM;
10064 goto err_out_release_parent;
10065 }
10066
10067 np->vir_regs_1 = of_ioremap(&op->resource[2], 0,
10068 resource_size(&op->resource[2]),
10069 "niu vregs-1");
10070 if (!np->vir_regs_1) {
10071 dev_err(&op->dev, "Cannot map device vir registers 1, aborting\n");
10072 err = -ENOMEM;
10073 goto err_out_iounmap;
10074 }
10075
10076 np->vir_regs_2 = of_ioremap(&op->resource[3], 0,
10077 resource_size(&op->resource[3]),
10078 "niu vregs-2");
10079 if (!np->vir_regs_2) {
10080 dev_err(&op->dev, "Cannot map device vir registers 2, aborting\n");
10081 err = -ENOMEM;
10082 goto err_out_iounmap;
10083 }
10084
10085 niu_assign_netdev_ops(dev);
10086
10087 err = niu_get_invariants(np);
10088 if (err) {
10089 if (err != -ENODEV)
10090 dev_err(&op->dev, "Problem fetching invariants of chip, aborting\n");
10091 goto err_out_iounmap;
10092 }
10093
10094 err = register_netdev(dev);
10095 if (err) {
10096 dev_err(&op->dev, "Cannot register net device, aborting\n");
10097 goto err_out_iounmap;
10098 }
10099
10100 platform_set_drvdata(op, dev);
10101
10102 niu_device_announce(np);
10103
10104 return 0;
10105
10106err_out_iounmap:
10107 if (np->vir_regs_1) {
10108 of_iounmap(&op->resource[2], np->vir_regs_1,
10109 resource_size(&op->resource[2]));
10110 np->vir_regs_1 = NULL;
10111 }
10112
10113 if (np->vir_regs_2) {
10114 of_iounmap(&op->resource[3], np->vir_regs_2,
10115 resource_size(&op->resource[3]));
10116 np->vir_regs_2 = NULL;
10117 }
10118
10119 if (np->regs) {
10120 of_iounmap(&op->resource[1], np->regs,
10121 resource_size(&op->resource[1]));
10122 np->regs = NULL;
10123 }
10124
10125err_out_release_parent:
10126 niu_put_parent(np);
10127
10128err_out_free_dev:
10129 free_netdev(dev);
10130
10131err_out:
10132 return err;
10133}
10134
10135static void niu_of_remove(struct platform_device *op)
10136{
10137 struct net_device *dev = platform_get_drvdata(op);
10138
10139 if (dev) {
10140 struct niu *np = netdev_priv(dev);
10141
10142 unregister_netdev(dev);
10143
10144 if (np->vir_regs_1) {
10145 of_iounmap(&op->resource[2], np->vir_regs_1,
10146 resource_size(&op->resource[2]));
10147 np->vir_regs_1 = NULL;
10148 }
10149
10150 if (np->vir_regs_2) {
10151 of_iounmap(&op->resource[3], np->vir_regs_2,
10152 resource_size(&op->resource[3]));
10153 np->vir_regs_2 = NULL;
10154 }
10155
10156 if (np->regs) {
10157 of_iounmap(&op->resource[1], np->regs,
10158 resource_size(&op->resource[1]));
10159 np->regs = NULL;
10160 }
10161
10162 niu_ldg_free(np);
10163
10164 niu_put_parent(np);
10165
10166 free_netdev(dev);
10167 }
10168}
10169
10170static const struct of_device_id niu_match[] = {
10171 {
10172 .name = "network",
10173 .compatible = "SUNW,niusl",
10174 },
10175 {},
10176};
10177MODULE_DEVICE_TABLE(of, niu_match);
10178
10179static struct platform_driver niu_of_driver = {
10180 .driver = {
10181 .name = "niu",
10182 .of_match_table = niu_match,
10183 },
10184 .probe = niu_of_probe,
10185 .remove_new = niu_of_remove,
10186};
10187
10188#endif /* CONFIG_SPARC64 */
10189
10190static int __init niu_init(void)
10191{
10192 int err = 0;
10193
10194 BUILD_BUG_ON(PAGE_SIZE < 4 * 1024);
10195
10196 BUILD_BUG_ON(offsetof(struct page, mapping) !=
10197 offsetof(union niu_page, next));
10198
10199 niu_debug = netif_msg_init(debug, NIU_MSG_DEFAULT);
10200
10201#ifdef CONFIG_SPARC64
10202 err = platform_driver_register(&niu_of_driver);
10203#endif
10204
10205 if (!err) {
10206 err = pci_register_driver(&niu_pci_driver);
10207#ifdef CONFIG_SPARC64
10208 if (err)
10209 platform_driver_unregister(&niu_of_driver);
10210#endif
10211 }
10212
10213 return err;
10214}
10215
10216static void __exit niu_exit(void)
10217{
10218 pci_unregister_driver(&niu_pci_driver);
10219#ifdef CONFIG_SPARC64
10220 platform_driver_unregister(&niu_of_driver);
10221#endif
10222}
10223
10224module_init(niu_init);
10225module_exit(niu_exit);