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1/* ne2k-pci.c: A NE2000 clone on PCI bus driver for Linux. */
2/*
3 A Linux device driver for PCI NE2000 clones.
4
5 Authors and other copyright holders:
6 1992-2000 by Donald Becker, NE2000 core and various modifications.
7 1995-1998 by Paul Gortmaker, core modifications and PCI support.
8 Copyright 1993 assigned to the United States Government as represented
9 by the Director, National Security Agency.
10
11 This software may be used and distributed according to the terms of
12 the GNU General Public License (GPL), incorporated herein by reference.
13 Drivers based on or derived from this code fall under the GPL and must
14 retain the authorship, copyright and license notice. This file is not
15 a complete program and may only be used when the entire operating
16 system is licensed under the GPL.
17
18 The author may be reached as becker@scyld.com, or C/O
19 Scyld Computing Corporation
20 410 Severn Ave., Suite 210
21 Annapolis MD 21403
22
23 Issues remaining:
24 People are making PCI ne2000 clones! Oh the horror, the horror...
25 Limited full-duplex support.
26*/
27
28#define DRV_NAME "ne2k-pci"
29#define DRV_VERSION "1.03"
30#define DRV_RELDATE "9/22/2003"
31
32
33/* The user-configurable values.
34 These may be modified when a driver module is loaded.*/
35
36#define MAX_UNITS 8 /* More are supported, limit only on options */
37/* Used to pass the full-duplex flag, etc. */
38static int full_duplex[MAX_UNITS];
39static int options[MAX_UNITS];
40
41/* Force a non std. amount of memory. Units are 256 byte pages. */
42/* #define PACKETBUF_MEMSIZE 0x40 */
43
44
45#include <linux/module.h>
46#include <linux/kernel.h>
47#include <linux/errno.h>
48#include <linux/pci.h>
49#include <linux/init.h>
50#include <linux/interrupt.h>
51#include <linux/ethtool.h>
52#include <linux/netdevice.h>
53#include <linux/etherdevice.h>
54
55#include <asm/io.h>
56#include <asm/irq.h>
57#include <linux/uaccess.h>
58
59#include "8390.h"
60
61static u32 ne2k_msg_enable;
62
63/* These identify the driver base version and may not be removed. */
64static const char version[] =
65 KERN_INFO DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE
66 " D. Becker/P. Gortmaker\n";
67
68#if defined(__powerpc__)
69#define inl_le(addr) le32_to_cpu(inl(addr))
70#define inw_le(addr) le16_to_cpu(inw(addr))
71#endif
72
73#define PFX DRV_NAME ": "
74
75MODULE_AUTHOR("Donald Becker / Paul Gortmaker");
76MODULE_DESCRIPTION("PCI NE2000 clone driver");
77MODULE_LICENSE("GPL");
78
79module_param_named(msg_enable, ne2k_msg_enable, uint, 0444);
80module_param_array(options, int, NULL, 0);
81module_param_array(full_duplex, int, NULL, 0);
82MODULE_PARM_DESC(msg_enable, "Debug message level (see linux/netdevice.h for bitmap)");
83MODULE_PARM_DESC(options, "Bit 5: full duplex");
84MODULE_PARM_DESC(full_duplex, "full duplex setting(s) (1)");
85
86/* Some defines that people can play with if so inclined. */
87
88/* Use 32 bit data-movement operations instead of 16 bit. */
89#define USE_LONGIO
90
91/* Do we implement the read before write bugfix ? */
92/* #define NE_RW_BUGFIX */
93
94/* Flags. We rename an existing ei_status field to store flags! */
95/* Thus only the low 8 bits are usable for non-init-time flags. */
96#define ne2k_flags reg0
97enum {
98 ONLY_16BIT_IO=8, ONLY_32BIT_IO=4, /* Chip can do only 16/32-bit xfers. */
99 FORCE_FDX=0x20, /* User override. */
100 REALTEK_FDX=0x40, HOLTEK_FDX=0x80,
101 STOP_PG_0x60=0x100,
102};
103
104enum ne2k_pci_chipsets {
105 CH_RealTek_RTL_8029 = 0,
106 CH_Winbond_89C940,
107 CH_Compex_RL2000,
108 CH_KTI_ET32P2,
109 CH_NetVin_NV5000SC,
110 CH_Via_86C926,
111 CH_SureCom_NE34,
112 CH_Winbond_W89C940F,
113 CH_Holtek_HT80232,
114 CH_Holtek_HT80229,
115 CH_Winbond_89C940_8c4a,
116};
117
118
119static struct {
120 char *name;
121 int flags;
122} pci_clone_list[] = {
123 {"RealTek RTL-8029", REALTEK_FDX},
124 {"Winbond 89C940", 0},
125 {"Compex RL2000", 0},
126 {"KTI ET32P2", 0},
127 {"NetVin NV5000SC", 0},
128 {"Via 86C926", ONLY_16BIT_IO},
129 {"SureCom NE34", 0},
130 {"Winbond W89C940F", 0},
131 {"Holtek HT80232", ONLY_16BIT_IO | HOLTEK_FDX},
132 {"Holtek HT80229", ONLY_32BIT_IO | HOLTEK_FDX | STOP_PG_0x60 },
133 {"Winbond W89C940(misprogrammed)", 0},
134 {NULL,}
135};
136
137
138static const struct pci_device_id ne2k_pci_tbl[] = {
139 { 0x10ec, 0x8029, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_RealTek_RTL_8029 },
140 { 0x1050, 0x0940, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Winbond_89C940 },
141 { 0x11f6, 0x1401, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Compex_RL2000 },
142 { 0x8e2e, 0x3000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_KTI_ET32P2 },
143 { 0x4a14, 0x5000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_NetVin_NV5000SC },
144 { 0x1106, 0x0926, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Via_86C926 },
145 { 0x10bd, 0x0e34, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_SureCom_NE34 },
146 { 0x1050, 0x5a5a, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Winbond_W89C940F },
147 { 0x12c3, 0x0058, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Holtek_HT80232 },
148 { 0x12c3, 0x5598, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Holtek_HT80229 },
149 { 0x8c4a, 0x1980, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Winbond_89C940_8c4a },
150 { 0, }
151};
152MODULE_DEVICE_TABLE(pci, ne2k_pci_tbl);
153
154
155/* ---- No user-serviceable parts below ---- */
156
157#define NE_BASE (dev->base_addr)
158#define NE_CMD 0x00
159#define NE_DATAPORT 0x10 /* NatSemi-defined port window offset. */
160#define NE_RESET 0x1f /* Issue a read to reset, a write to clear. */
161#define NE_IO_EXTENT 0x20
162
163#define NESM_START_PG 0x40 /* First page of TX buffer */
164#define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */
165
166
167static int ne2k_pci_open(struct net_device *dev);
168static int ne2k_pci_close(struct net_device *dev);
169
170static void ne2k_pci_reset_8390(struct net_device *dev);
171static void ne2k_pci_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
172 int ring_page);
173static void ne2k_pci_block_input(struct net_device *dev, int count,
174 struct sk_buff *skb, int ring_offset);
175static void ne2k_pci_block_output(struct net_device *dev, const int count,
176 const unsigned char *buf, const int start_page);
177static const struct ethtool_ops ne2k_pci_ethtool_ops;
178
179
180
181/* There is no room in the standard 8390 structure for extra info we need,
182 so we build a meta/outer-wrapper structure.. */
183struct ne2k_pci_card {
184 struct net_device *dev;
185 struct pci_dev *pci_dev;
186};
187
188
189
190/*
191 NEx000-clone boards have a Station Address (SA) PROM (SAPROM) in the packet
192 buffer memory space. By-the-spec NE2000 clones have 0x57,0x57 in bytes
193 0x0e,0x0f of the SAPROM, while other supposed NE2000 clones must be
194 detected by their SA prefix.
195
196 Reading the SAPROM from a word-wide card with the 8390 set in byte-wide
197 mode results in doubled values, which can be detected and compensated for.
198
199 The probe is also responsible for initializing the card and filling
200 in the 'dev' and 'ei_status' structures.
201*/
202
203static const struct net_device_ops ne2k_netdev_ops = {
204 .ndo_open = ne2k_pci_open,
205 .ndo_stop = ne2k_pci_close,
206 .ndo_start_xmit = ei_start_xmit,
207 .ndo_tx_timeout = ei_tx_timeout,
208 .ndo_get_stats = ei_get_stats,
209 .ndo_set_rx_mode = ei_set_multicast_list,
210 .ndo_validate_addr = eth_validate_addr,
211 .ndo_set_mac_address = eth_mac_addr,
212#ifdef CONFIG_NET_POLL_CONTROLLER
213 .ndo_poll_controller = ei_poll,
214#endif
215};
216
217static int ne2k_pci_init_one(struct pci_dev *pdev,
218 const struct pci_device_id *ent)
219{
220 struct net_device *dev;
221 int i;
222 unsigned char SA_prom[32];
223 int start_page, stop_page;
224 int irq, reg0, chip_idx = ent->driver_data;
225 static unsigned int fnd_cnt;
226 long ioaddr;
227 int flags = pci_clone_list[chip_idx].flags;
228 struct ei_device *ei_local;
229
230/* when built into the kernel, we only print version if device is found */
231#ifndef MODULE
232 static int printed_version;
233 if (!printed_version++)
234 printk(version);
235#endif
236
237 fnd_cnt++;
238
239 i = pci_enable_device (pdev);
240 if (i)
241 return i;
242
243 ioaddr = pci_resource_start (pdev, 0);
244 irq = pdev->irq;
245
246 if (!ioaddr || ((pci_resource_flags (pdev, 0) & IORESOURCE_IO) == 0)) {
247 dev_err(&pdev->dev, "no I/O resource at PCI BAR #0\n");
248 goto err_out;
249 }
250
251 if (request_region (ioaddr, NE_IO_EXTENT, DRV_NAME) == NULL) {
252 dev_err(&pdev->dev, "I/O resource 0x%x @ 0x%lx busy\n",
253 NE_IO_EXTENT, ioaddr);
254 goto err_out;
255 }
256
257 reg0 = inb(ioaddr);
258 if (reg0 == 0xFF)
259 goto err_out_free_res;
260
261 /* Do a preliminary verification that we have a 8390. */
262 {
263 int regd;
264 outb(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD);
265 regd = inb(ioaddr + 0x0d);
266 outb(0xff, ioaddr + 0x0d);
267 outb(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD);
268 inb(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */
269 if (inb(ioaddr + EN0_COUNTER0) != 0) {
270 outb(reg0, ioaddr);
271 outb(regd, ioaddr + 0x0d); /* Restore the old values. */
272 goto err_out_free_res;
273 }
274 }
275
276 /* Allocate net_device, dev->priv; fill in 8390 specific dev fields. */
277 dev = alloc_ei_netdev();
278 if (!dev) {
279 dev_err(&pdev->dev, "cannot allocate ethernet device\n");
280 goto err_out_free_res;
281 }
282 dev->netdev_ops = &ne2k_netdev_ops;
283 ei_local = netdev_priv(dev);
284 ei_local->msg_enable = ne2k_msg_enable;
285
286 SET_NETDEV_DEV(dev, &pdev->dev);
287
288 /* Reset card. Who knows what dain-bramaged state it was left in. */
289 {
290 unsigned long reset_start_time = jiffies;
291
292 outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET);
293
294 /* This looks like a horrible timing loop, but it should never take
295 more than a few cycles.
296 */
297 while ((inb(ioaddr + EN0_ISR) & ENISR_RESET) == 0)
298 /* Limit wait: '2' avoids jiffy roll-over. */
299 if (jiffies - reset_start_time > 2) {
300 dev_err(&pdev->dev,
301 "Card failure (no reset ack).\n");
302 goto err_out_free_netdev;
303 }
304
305 outb(0xff, ioaddr + EN0_ISR); /* Ack all intr. */
306 }
307
308 /* Read the 16 bytes of station address PROM.
309 We must first initialize registers, similar to NS8390_init(eifdev, 0).
310 We can't reliably read the SAPROM address without this.
311 (I learned the hard way!). */
312 {
313 struct {unsigned char value, offset; } program_seq[] = {
314 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
315 {0x49, EN0_DCFG}, /* Set word-wide access. */
316 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
317 {0x00, EN0_RCNTHI},
318 {0x00, EN0_IMR}, /* Mask completion irq. */
319 {0xFF, EN0_ISR},
320 {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */
321 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
322 {32, EN0_RCNTLO},
323 {0x00, EN0_RCNTHI},
324 {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */
325 {0x00, EN0_RSARHI},
326 {E8390_RREAD+E8390_START, E8390_CMD},
327 };
328 for (i = 0; i < ARRAY_SIZE(program_seq); i++)
329 outb(program_seq[i].value, ioaddr + program_seq[i].offset);
330
331 }
332
333 /* Note: all PCI cards have at least 16 bit access, so we don't have
334 to check for 8 bit cards. Most cards permit 32 bit access. */
335 if (flags & ONLY_32BIT_IO) {
336 for (i = 0; i < 4 ; i++)
337 ((u32 *)SA_prom)[i] = le32_to_cpu(inl(ioaddr + NE_DATAPORT));
338 } else
339 for(i = 0; i < 32 /*sizeof(SA_prom)*/; i++)
340 SA_prom[i] = inb(ioaddr + NE_DATAPORT);
341
342 /* We always set the 8390 registers for word mode. */
343 outb(0x49, ioaddr + EN0_DCFG);
344 start_page = NESM_START_PG;
345
346 stop_page = flags & STOP_PG_0x60 ? 0x60 : NESM_STOP_PG;
347
348 /* Set up the rest of the parameters. */
349 dev->irq = irq;
350 dev->base_addr = ioaddr;
351 pci_set_drvdata(pdev, dev);
352
353 ei_status.name = pci_clone_list[chip_idx].name;
354 ei_status.tx_start_page = start_page;
355 ei_status.stop_page = stop_page;
356 ei_status.word16 = 1;
357 ei_status.ne2k_flags = flags;
358 if (fnd_cnt < MAX_UNITS) {
359 if (full_duplex[fnd_cnt] > 0 || (options[fnd_cnt] & FORCE_FDX))
360 ei_status.ne2k_flags |= FORCE_FDX;
361 }
362
363 ei_status.rx_start_page = start_page + TX_PAGES;
364#ifdef PACKETBUF_MEMSIZE
365 /* Allow the packet buffer size to be overridden by know-it-alls. */
366 ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
367#endif
368
369 ei_status.reset_8390 = &ne2k_pci_reset_8390;
370 ei_status.block_input = &ne2k_pci_block_input;
371 ei_status.block_output = &ne2k_pci_block_output;
372 ei_status.get_8390_hdr = &ne2k_pci_get_8390_hdr;
373 ei_status.priv = (unsigned long) pdev;
374
375 dev->ethtool_ops = &ne2k_pci_ethtool_ops;
376 NS8390_init(dev, 0);
377
378 memcpy(dev->dev_addr, SA_prom, dev->addr_len);
379
380 i = register_netdev(dev);
381 if (i)
382 goto err_out_free_netdev;
383
384 netdev_info(dev, "%s found at %#lx, IRQ %d, %pM.\n",
385 pci_clone_list[chip_idx].name, ioaddr, dev->irq,
386 dev->dev_addr);
387
388 return 0;
389
390err_out_free_netdev:
391 free_netdev (dev);
392err_out_free_res:
393 release_region (ioaddr, NE_IO_EXTENT);
394err_out:
395 pci_disable_device(pdev);
396 return -ENODEV;
397}
398
399/*
400 * Magic incantation sequence for full duplex on the supported cards.
401 */
402static inline int set_realtek_fdx(struct net_device *dev)
403{
404 long ioaddr = dev->base_addr;
405
406 outb(0xC0 + E8390_NODMA, ioaddr + NE_CMD); /* Page 3 */
407 outb(0xC0, ioaddr + 0x01); /* Enable writes to CONFIG3 */
408 outb(0x40, ioaddr + 0x06); /* Enable full duplex */
409 outb(0x00, ioaddr + 0x01); /* Disable writes to CONFIG3 */
410 outb(E8390_PAGE0 + E8390_NODMA, ioaddr + NE_CMD); /* Page 0 */
411 return 0;
412}
413
414static inline int set_holtek_fdx(struct net_device *dev)
415{
416 long ioaddr = dev->base_addr;
417
418 outb(inb(ioaddr + 0x20) | 0x80, ioaddr + 0x20);
419 return 0;
420}
421
422static int ne2k_pci_set_fdx(struct net_device *dev)
423{
424 if (ei_status.ne2k_flags & REALTEK_FDX)
425 return set_realtek_fdx(dev);
426 else if (ei_status.ne2k_flags & HOLTEK_FDX)
427 return set_holtek_fdx(dev);
428
429 return -EOPNOTSUPP;
430}
431
432static int ne2k_pci_open(struct net_device *dev)
433{
434 int ret = request_irq(dev->irq, ei_interrupt, IRQF_SHARED, dev->name, dev);
435 if (ret)
436 return ret;
437
438 if (ei_status.ne2k_flags & FORCE_FDX)
439 ne2k_pci_set_fdx(dev);
440
441 ei_open(dev);
442 return 0;
443}
444
445static int ne2k_pci_close(struct net_device *dev)
446{
447 ei_close(dev);
448 free_irq(dev->irq, dev);
449 return 0;
450}
451
452/* Hard reset the card. This used to pause for the same period that a
453 8390 reset command required, but that shouldn't be necessary. */
454static void ne2k_pci_reset_8390(struct net_device *dev)
455{
456 unsigned long reset_start_time = jiffies;
457 struct ei_device *ei_local = netdev_priv(dev);
458
459 netif_dbg(ei_local, hw, dev, "resetting the 8390 t=%ld...\n",
460 jiffies);
461
462 outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
463
464 ei_status.txing = 0;
465 ei_status.dmaing = 0;
466
467 /* This check _should_not_ be necessary, omit eventually. */
468 while ((inb(NE_BASE+EN0_ISR) & ENISR_RESET) == 0)
469 if (jiffies - reset_start_time > 2) {
470 netdev_err(dev, "ne2k_pci_reset_8390() did not complete.\n");
471 break;
472 }
473 outb(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */
474}
475
476/* Grab the 8390 specific header. Similar to the block_input routine, but
477 we don't need to be concerned with ring wrap as the header will be at
478 the start of a page, so we optimize accordingly. */
479
480static void ne2k_pci_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
481{
482
483 long nic_base = dev->base_addr;
484
485 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
486 if (ei_status.dmaing) {
487 netdev_err(dev, "DMAing conflict in ne2k_pci_get_8390_hdr "
488 "[DMAstat:%d][irqlock:%d].\n",
489 ei_status.dmaing, ei_status.irqlock);
490 return;
491 }
492
493 ei_status.dmaing |= 0x01;
494 outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
495 outb(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
496 outb(0, nic_base + EN0_RCNTHI);
497 outb(0, nic_base + EN0_RSARLO); /* On page boundary */
498 outb(ring_page, nic_base + EN0_RSARHI);
499 outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
500
501 if (ei_status.ne2k_flags & ONLY_16BIT_IO) {
502 insw(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1);
503 } else {
504 *(u32*)hdr = le32_to_cpu(inl(NE_BASE + NE_DATAPORT));
505 le16_to_cpus(&hdr->count);
506 }
507
508 outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
509 ei_status.dmaing &= ~0x01;
510}
511
512/* Block input and output, similar to the Crynwr packet driver. If you
513 are porting to a new ethercard, look at the packet driver source for hints.
514 The NEx000 doesn't share the on-board packet memory -- you have to put
515 the packet out through the "remote DMA" dataport using outb. */
516
517static void ne2k_pci_block_input(struct net_device *dev, int count,
518 struct sk_buff *skb, int ring_offset)
519{
520 long nic_base = dev->base_addr;
521 char *buf = skb->data;
522
523 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
524 if (ei_status.dmaing) {
525 netdev_err(dev, "DMAing conflict in ne2k_pci_block_input "
526 "[DMAstat:%d][irqlock:%d].\n",
527 ei_status.dmaing, ei_status.irqlock);
528 return;
529 }
530 ei_status.dmaing |= 0x01;
531 if (ei_status.ne2k_flags & ONLY_32BIT_IO)
532 count = (count + 3) & 0xFFFC;
533 outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
534 outb(count & 0xff, nic_base + EN0_RCNTLO);
535 outb(count >> 8, nic_base + EN0_RCNTHI);
536 outb(ring_offset & 0xff, nic_base + EN0_RSARLO);
537 outb(ring_offset >> 8, nic_base + EN0_RSARHI);
538 outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
539
540 if (ei_status.ne2k_flags & ONLY_16BIT_IO) {
541 insw(NE_BASE + NE_DATAPORT,buf,count>>1);
542 if (count & 0x01) {
543 buf[count-1] = inb(NE_BASE + NE_DATAPORT);
544 }
545 } else {
546 insl(NE_BASE + NE_DATAPORT, buf, count>>2);
547 if (count & 3) {
548 buf += count & ~3;
549 if (count & 2) {
550 __le16 *b = (__le16 *)buf;
551
552 *b++ = cpu_to_le16(inw(NE_BASE + NE_DATAPORT));
553 buf = (char *)b;
554 }
555 if (count & 1)
556 *buf = inb(NE_BASE + NE_DATAPORT);
557 }
558 }
559
560 outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
561 ei_status.dmaing &= ~0x01;
562}
563
564static void ne2k_pci_block_output(struct net_device *dev, int count,
565 const unsigned char *buf, const int start_page)
566{
567 long nic_base = NE_BASE;
568 unsigned long dma_start;
569
570 /* On little-endian it's always safe to round the count up for
571 word writes. */
572 if (ei_status.ne2k_flags & ONLY_32BIT_IO)
573 count = (count + 3) & 0xFFFC;
574 else
575 if (count & 0x01)
576 count++;
577
578 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
579 if (ei_status.dmaing) {
580 netdev_err(dev, "DMAing conflict in ne2k_pci_block_output."
581 "[DMAstat:%d][irqlock:%d]\n",
582 ei_status.dmaing, ei_status.irqlock);
583 return;
584 }
585 ei_status.dmaing |= 0x01;
586 /* We should already be in page 0, but to be safe... */
587 outb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
588
589#ifdef NE8390_RW_BUGFIX
590 /* Handle the read-before-write bug the same way as the
591 Crynwr packet driver -- the NatSemi method doesn't work.
592 Actually this doesn't always work either, but if you have
593 problems with your NEx000 this is better than nothing! */
594 outb(0x42, nic_base + EN0_RCNTLO);
595 outb(0x00, nic_base + EN0_RCNTHI);
596 outb(0x42, nic_base + EN0_RSARLO);
597 outb(0x00, nic_base + EN0_RSARHI);
598 outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
599#endif
600 outb(ENISR_RDC, nic_base + EN0_ISR);
601
602 /* Now the normal output. */
603 outb(count & 0xff, nic_base + EN0_RCNTLO);
604 outb(count >> 8, nic_base + EN0_RCNTHI);
605 outb(0x00, nic_base + EN0_RSARLO);
606 outb(start_page, nic_base + EN0_RSARHI);
607 outb(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
608 if (ei_status.ne2k_flags & ONLY_16BIT_IO) {
609 outsw(NE_BASE + NE_DATAPORT, buf, count>>1);
610 } else {
611 outsl(NE_BASE + NE_DATAPORT, buf, count>>2);
612 if (count & 3) {
613 buf += count & ~3;
614 if (count & 2) {
615 __le16 *b = (__le16 *)buf;
616
617 outw(le16_to_cpu(*b++), NE_BASE + NE_DATAPORT);
618 buf = (char *)b;
619 }
620 }
621 }
622
623 dma_start = jiffies;
624
625 while ((inb(nic_base + EN0_ISR) & ENISR_RDC) == 0)
626 if (jiffies - dma_start > 2) { /* Avoid clock roll-over. */
627 netdev_warn(dev, "timeout waiting for Tx RDC.\n");
628 ne2k_pci_reset_8390(dev);
629 NS8390_init(dev,1);
630 break;
631 }
632
633 outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
634 ei_status.dmaing &= ~0x01;
635}
636
637static void ne2k_pci_get_drvinfo(struct net_device *dev,
638 struct ethtool_drvinfo *info)
639{
640 struct ei_device *ei = netdev_priv(dev);
641 struct pci_dev *pci_dev = (struct pci_dev *) ei->priv;
642
643 strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
644 strlcpy(info->version, DRV_VERSION, sizeof(info->version));
645 strlcpy(info->bus_info, pci_name(pci_dev), sizeof(info->bus_info));
646}
647
648static u32 ne2k_pci_get_msglevel(struct net_device *dev)
649{
650 struct ei_device *ei_local = netdev_priv(dev);
651
652 return ei_local->msg_enable;
653}
654
655static void ne2k_pci_set_msglevel(struct net_device *dev, u32 v)
656{
657 struct ei_device *ei_local = netdev_priv(dev);
658
659 ei_local->msg_enable = v;
660}
661
662static const struct ethtool_ops ne2k_pci_ethtool_ops = {
663 .get_drvinfo = ne2k_pci_get_drvinfo,
664 .get_msglevel = ne2k_pci_get_msglevel,
665 .set_msglevel = ne2k_pci_set_msglevel,
666};
667
668static void ne2k_pci_remove_one(struct pci_dev *pdev)
669{
670 struct net_device *dev = pci_get_drvdata(pdev);
671
672 BUG_ON(!dev);
673 unregister_netdev(dev);
674 release_region(dev->base_addr, NE_IO_EXTENT);
675 free_netdev(dev);
676 pci_disable_device(pdev);
677}
678
679#ifdef CONFIG_PM
680static int ne2k_pci_suspend (struct pci_dev *pdev, pm_message_t state)
681{
682 struct net_device *dev = pci_get_drvdata (pdev);
683
684 netif_device_detach(dev);
685 pci_save_state(pdev);
686 pci_disable_device(pdev);
687 pci_set_power_state(pdev, pci_choose_state(pdev, state));
688
689 return 0;
690}
691
692static int ne2k_pci_resume (struct pci_dev *pdev)
693{
694 struct net_device *dev = pci_get_drvdata (pdev);
695 int rc;
696
697 pci_set_power_state(pdev, PCI_D0);
698 pci_restore_state(pdev);
699
700 rc = pci_enable_device(pdev);
701 if (rc)
702 return rc;
703
704 NS8390_init(dev, 1);
705 netif_device_attach(dev);
706
707 return 0;
708}
709
710#endif /* CONFIG_PM */
711
712
713static struct pci_driver ne2k_driver = {
714 .name = DRV_NAME,
715 .probe = ne2k_pci_init_one,
716 .remove = ne2k_pci_remove_one,
717 .id_table = ne2k_pci_tbl,
718#ifdef CONFIG_PM
719 .suspend = ne2k_pci_suspend,
720 .resume = ne2k_pci_resume,
721#endif /* CONFIG_PM */
722
723};
724
725
726static int __init ne2k_pci_init(void)
727{
728/* when a module, this is printed whether or not devices are found in probe */
729#ifdef MODULE
730 printk(version);
731#endif
732 return pci_register_driver(&ne2k_driver);
733}
734
735
736static void __exit ne2k_pci_cleanup(void)
737{
738 pci_unregister_driver (&ne2k_driver);
739}
740
741module_init(ne2k_pci_init);
742module_exit(ne2k_pci_cleanup);
1/* A Linux device driver for PCI NE2000 clones.
2 *
3 * Authors and other copyright holders:
4 * 1992-2000 by Donald Becker, NE2000 core and various modifications.
5 * 1995-1998 by Paul Gortmaker, core modifications and PCI support.
6 * Copyright 1993 assigned to the United States Government as represented
7 * by the Director, National Security Agency.
8 *
9 * This software may be used and distributed according to the terms of
10 * the GNU General Public License (GPL), incorporated herein by reference.
11 * Drivers based on or derived from this code fall under the GPL and must
12 * retain the authorship, copyright and license notice. This file is not
13 * a complete program and may only be used when the entire operating
14 * system is licensed under the GPL.
15 *
16 * The author may be reached as becker@scyld.com, or C/O
17 * Scyld Computing Corporation
18 * 410 Severn Ave., Suite 210
19 * Annapolis MD 21403
20 *
21 * Issues remaining:
22 * People are making PCI NE2000 clones! Oh the horror, the horror...
23 * Limited full-duplex support.
24 */
25
26#define DRV_NAME "ne2k-pci"
27#define DRV_DESCRIPTION "PCI NE2000 clone driver"
28#define DRV_AUTHOR "Donald Becker / Paul Gortmaker"
29#define DRV_VERSION "1.03"
30#define DRV_RELDATE "9/22/2003"
31
32#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
33
34/* The user-configurable values.
35 * These may be modified when a driver module is loaded.
36 */
37
38/* More are supported, limit only on options */
39#define MAX_UNITS 8
40
41/* Used to pass the full-duplex flag, etc. */
42static int full_duplex[MAX_UNITS];
43static int options[MAX_UNITS];
44
45/* Force a non std. amount of memory. Units are 256 byte pages. */
46/* #define PACKETBUF_MEMSIZE 0x40 */
47
48
49#include <linux/module.h>
50#include <linux/kernel.h>
51#include <linux/errno.h>
52#include <linux/pci.h>
53#include <linux/init.h>
54#include <linux/interrupt.h>
55#include <linux/ethtool.h>
56#include <linux/netdevice.h>
57#include <linux/etherdevice.h>
58
59#include <linux/io.h>
60#include <asm/irq.h>
61#include <linux/uaccess.h>
62
63#include "8390.h"
64
65static int ne2k_msg_enable;
66
67static const int default_msg_level = (NETIF_MSG_DRV | NETIF_MSG_PROBE |
68 NETIF_MSG_RX_ERR | NETIF_MSG_TX_ERR);
69
70#if defined(__powerpc__)
71#define inl_le(addr) le32_to_cpu(inl(addr))
72#define inw_le(addr) le16_to_cpu(inw(addr))
73#endif
74
75MODULE_AUTHOR(DRV_AUTHOR);
76MODULE_DESCRIPTION(DRV_DESCRIPTION);
77MODULE_VERSION(DRV_VERSION);
78MODULE_LICENSE("GPL");
79
80module_param_named(msg_enable, ne2k_msg_enable, int, 0444);
81module_param_array(options, int, NULL, 0);
82module_param_array(full_duplex, int, NULL, 0);
83MODULE_PARM_DESC(msg_enable, "Debug message level (see linux/netdevice.h for bitmap)");
84MODULE_PARM_DESC(options, "Bit 5: full duplex");
85MODULE_PARM_DESC(full_duplex, "full duplex setting(s) (1)");
86
87/* Some defines that people can play with if so inclined.
88 */
89
90/* Use 32 bit data-movement operations instead of 16 bit. */
91#define USE_LONGIO
92
93/* Do we implement the read before write bugfix ? */
94/* #define NE_RW_BUGFIX */
95
96/* Flags. We rename an existing ei_status field to store flags!
97 * Thus only the low 8 bits are usable for non-init-time flags.
98 */
99#define ne2k_flags reg0
100
101enum {
102 /* Chip can do only 16/32-bit xfers. */
103 ONLY_16BIT_IO = 8, ONLY_32BIT_IO = 4,
104 /* User override. */
105 FORCE_FDX = 0x20,
106 REALTEK_FDX = 0x40, HOLTEK_FDX = 0x80,
107 STOP_PG_0x60 = 0x100,
108};
109
110enum ne2k_pci_chipsets {
111 CH_RealTek_RTL_8029 = 0,
112 CH_Winbond_89C940,
113 CH_Compex_RL2000,
114 CH_KTI_ET32P2,
115 CH_NetVin_NV5000SC,
116 CH_Via_86C926,
117 CH_SureCom_NE34,
118 CH_Winbond_W89C940F,
119 CH_Holtek_HT80232,
120 CH_Holtek_HT80229,
121 CH_Winbond_89C940_8c4a,
122};
123
124
125static struct {
126 char *name;
127 int flags;
128} pci_clone_list[] = {
129 {"RealTek RTL-8029(AS)", REALTEK_FDX},
130 {"Winbond 89C940", 0},
131 {"Compex RL2000", 0},
132 {"KTI ET32P2", 0},
133 {"NetVin NV5000SC", 0},
134 {"Via 86C926", ONLY_16BIT_IO},
135 {"SureCom NE34", 0},
136 {"Winbond W89C940F", 0},
137 {"Holtek HT80232", ONLY_16BIT_IO | HOLTEK_FDX},
138 {"Holtek HT80229", ONLY_32BIT_IO | HOLTEK_FDX | STOP_PG_0x60 },
139 {"Winbond W89C940(misprogrammed)", 0},
140 {NULL,}
141};
142
143
144static const struct pci_device_id ne2k_pci_tbl[] = {
145 { 0x10ec, 0x8029, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_RealTek_RTL_8029 },
146 { 0x1050, 0x0940, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Winbond_89C940 },
147 { 0x11f6, 0x1401, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Compex_RL2000 },
148 { 0x8e2e, 0x3000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_KTI_ET32P2 },
149 { 0x4a14, 0x5000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_NetVin_NV5000SC },
150 { 0x1106, 0x0926, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Via_86C926 },
151 { 0x10bd, 0x0e34, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_SureCom_NE34 },
152 { 0x1050, 0x5a5a, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Winbond_W89C940F },
153 { 0x12c3, 0x0058, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Holtek_HT80232 },
154 { 0x12c3, 0x5598, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Holtek_HT80229 },
155 { 0x8c4a, 0x1980, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Winbond_89C940_8c4a },
156 { 0, }
157};
158
159MODULE_DEVICE_TABLE(pci, ne2k_pci_tbl);
160
161
162/* ---- No user-serviceable parts below ---- */
163
164#define NE_BASE (dev->base_addr)
165#define NE_CMD 0x00
166#define NE_DATAPORT 0x10 /* NatSemi-defined port window offset. */
167#define NE_RESET 0x1f /* Issue a read to reset, a write to clear. */
168#define NE_IO_EXTENT 0x20
169
170#define NESM_START_PG 0x40 /* First page of TX buffer */
171#define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */
172
173
174static int ne2k_pci_open(struct net_device *dev);
175static int ne2k_pci_close(struct net_device *dev);
176
177static void ne2k_pci_reset_8390(struct net_device *dev);
178static void ne2k_pci_get_8390_hdr(struct net_device *dev,
179 struct e8390_pkt_hdr *hdr, int ring_page);
180static void ne2k_pci_block_input(struct net_device *dev, int count,
181 struct sk_buff *skb, int ring_offset);
182static void ne2k_pci_block_output(struct net_device *dev, const int count,
183 const unsigned char *buf,
184 const int start_page);
185static const struct ethtool_ops ne2k_pci_ethtool_ops;
186
187
188
189/* There is no room in the standard 8390 structure for extra info we need,
190 * so we build a meta/outer-wrapper structure..
191 */
192struct ne2k_pci_card {
193 struct net_device *dev;
194 struct pci_dev *pci_dev;
195};
196
197
198
199/* NEx000-clone boards have a Station Address (SA) PROM (SAPROM) in the packet
200 * buffer memory space. By-the-spec NE2000 clones have 0x57,0x57 in bytes
201 * 0x0e,0x0f of the SAPROM, while other supposed NE2000 clones must be
202 * detected by their SA prefix.
203 *
204 * Reading the SAPROM from a word-wide card with the 8390 set in byte-wide
205 * mode results in doubled values, which can be detected and compensated for.
206 *
207 * The probe is also responsible for initializing the card and filling
208 * in the 'dev' and 'ei_status' structures.
209 */
210
211static const struct net_device_ops ne2k_netdev_ops = {
212 .ndo_open = ne2k_pci_open,
213 .ndo_stop = ne2k_pci_close,
214 .ndo_start_xmit = ei_start_xmit,
215 .ndo_tx_timeout = ei_tx_timeout,
216 .ndo_get_stats = ei_get_stats,
217 .ndo_set_rx_mode = ei_set_multicast_list,
218 .ndo_validate_addr = eth_validate_addr,
219 .ndo_set_mac_address = eth_mac_addr,
220#ifdef CONFIG_NET_POLL_CONTROLLER
221 .ndo_poll_controller = ei_poll,
222#endif
223};
224
225static int ne2k_pci_init_one(struct pci_dev *pdev,
226 const struct pci_device_id *ent)
227{
228 struct net_device *dev;
229 int i;
230 unsigned char SA_prom[32];
231 int start_page, stop_page;
232 int irq, reg0, chip_idx = ent->driver_data;
233 static unsigned int fnd_cnt;
234 long ioaddr;
235 int flags = pci_clone_list[chip_idx].flags;
236 struct ei_device *ei_local;
237
238 fnd_cnt++;
239
240 i = pci_enable_device(pdev);
241 if (i)
242 return i;
243
244 ioaddr = pci_resource_start(pdev, 0);
245 irq = pdev->irq;
246
247 if (!ioaddr || ((pci_resource_flags(pdev, 0) & IORESOURCE_IO) == 0)) {
248 dev_err(&pdev->dev, "no I/O resource at PCI BAR #0\n");
249 goto err_out;
250 }
251
252 if (!request_region(ioaddr, NE_IO_EXTENT, DRV_NAME)) {
253 dev_err(&pdev->dev, "I/O resource 0x%x @ 0x%lx busy\n",
254 NE_IO_EXTENT, ioaddr);
255 goto err_out;
256 }
257
258 reg0 = inb(ioaddr);
259 if (reg0 == 0xFF)
260 goto err_out_free_res;
261
262 /* Do a preliminary verification that we have a 8390. */
263 {
264 int regd;
265
266 outb(E8390_NODMA + E8390_PAGE1 + E8390_STOP, ioaddr + E8390_CMD);
267 regd = inb(ioaddr + 0x0d);
268 outb(0xff, ioaddr + 0x0d);
269 outb(E8390_NODMA + E8390_PAGE0, ioaddr + E8390_CMD);
270 /* Clear the counter by reading. */
271 inb(ioaddr + EN0_COUNTER0);
272 if (inb(ioaddr + EN0_COUNTER0) != 0) {
273 outb(reg0, ioaddr);
274 /* Restore the old values. */
275 outb(regd, ioaddr + 0x0d);
276 goto err_out_free_res;
277 }
278 }
279
280 /* Allocate net_device, dev->priv; fill in 8390 specific dev fields. */
281 dev = alloc_ei_netdev();
282 if (!dev) {
283 dev_err(&pdev->dev, "cannot allocate ethernet device\n");
284 goto err_out_free_res;
285 }
286 dev->netdev_ops = &ne2k_netdev_ops;
287 ei_local = netdev_priv(dev);
288 ei_local->msg_enable = netif_msg_init(ne2k_msg_enable, default_msg_level);
289
290 SET_NETDEV_DEV(dev, &pdev->dev);
291
292 /* Reset card. Who knows what dain-bramaged state it was left in. */
293 {
294 unsigned long reset_start_time = jiffies;
295
296 outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET);
297
298 /* This looks like a horrible timing loop, but it should never
299 * take more than a few cycles.
300 */
301 while ((inb(ioaddr + EN0_ISR) & ENISR_RESET) == 0)
302 /* Limit wait: '2' avoids jiffy roll-over. */
303 if (jiffies - reset_start_time > 2) {
304 dev_err(&pdev->dev,
305 "Card failure (no reset ack).\n");
306 goto err_out_free_netdev;
307 }
308 /* Ack all intr. */
309 outb(0xff, ioaddr + EN0_ISR);
310 }
311
312 /* Read the 16 bytes of station address PROM.
313 * We must first initialize registers, similar
314 * to NS8390_init(eifdev, 0).
315 * We can't reliably read the SAPROM address without this.
316 * (I learned the hard way!).
317 */
318 {
319 struct {unsigned char value, offset; } program_seq[] = {
320 /* Select page 0 */
321 {E8390_NODMA + E8390_PAGE0 + E8390_STOP, E8390_CMD},
322 /* Set word-wide access */
323 {0x49, EN0_DCFG},
324 /* Clear the count regs. */
325 {0x00, EN0_RCNTLO},
326 /* Mask completion IRQ */
327 {0x00, EN0_RCNTHI},
328 {0x00, EN0_IMR},
329 {0xFF, EN0_ISR},
330 /* 0x20 Set to monitor */
331 {E8390_RXOFF, EN0_RXCR},
332 /* 0x02 and loopback mode */
333 {E8390_TXOFF, EN0_TXCR},
334 {32, EN0_RCNTLO},
335 {0x00, EN0_RCNTHI},
336 /* DMA starting at 0x0000 */
337 {0x00, EN0_RSARLO},
338 {0x00, EN0_RSARHI},
339 {E8390_RREAD+E8390_START, E8390_CMD},
340 };
341 for (i = 0; i < ARRAY_SIZE(program_seq); i++)
342 outb(program_seq[i].value,
343 ioaddr + program_seq[i].offset);
344
345 }
346
347 /* Note: all PCI cards have at least 16 bit access, so we don't have
348 * to check for 8 bit cards. Most cards permit 32 bit access.
349 */
350 if (flags & ONLY_32BIT_IO) {
351 for (i = 0; i < 4 ; i++)
352 ((u32 *)SA_prom)[i] = le32_to_cpu(inl(ioaddr + NE_DATAPORT));
353 } else
354 for (i = 0; i < 32 /* sizeof(SA_prom )*/; i++)
355 SA_prom[i] = inb(ioaddr + NE_DATAPORT);
356
357 /* We always set the 8390 registers for word mode. */
358 outb(0x49, ioaddr + EN0_DCFG);
359 start_page = NESM_START_PG;
360
361 stop_page = flags & STOP_PG_0x60 ? 0x60 : NESM_STOP_PG;
362
363 /* Set up the rest of the parameters. */
364 dev->irq = irq;
365 dev->base_addr = ioaddr;
366 pci_set_drvdata(pdev, dev);
367
368 ei_status.name = pci_clone_list[chip_idx].name;
369 ei_status.tx_start_page = start_page;
370 ei_status.stop_page = stop_page;
371 ei_status.word16 = 1;
372 ei_status.ne2k_flags = flags;
373 if (fnd_cnt < MAX_UNITS) {
374 if (full_duplex[fnd_cnt] > 0 || (options[fnd_cnt] & FORCE_FDX))
375 ei_status.ne2k_flags |= FORCE_FDX;
376 }
377
378 ei_status.rx_start_page = start_page + TX_PAGES;
379#ifdef PACKETBUF_MEMSIZE
380 /* Allow the packet buffer size to be overridden by know-it-alls. */
381 ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
382#endif
383
384 ei_status.reset_8390 = &ne2k_pci_reset_8390;
385 ei_status.block_input = &ne2k_pci_block_input;
386 ei_status.block_output = &ne2k_pci_block_output;
387 ei_status.get_8390_hdr = &ne2k_pci_get_8390_hdr;
388 ei_status.priv = (unsigned long) pdev;
389
390 dev->ethtool_ops = &ne2k_pci_ethtool_ops;
391 NS8390_init(dev, 0);
392
393 eth_hw_addr_set(dev, SA_prom);
394
395 i = register_netdev(dev);
396 if (i)
397 goto err_out_free_netdev;
398
399 netdev_info(dev, "%s found at %#lx, IRQ %d, %pM.\n",
400 pci_clone_list[chip_idx].name, ioaddr, dev->irq,
401 dev->dev_addr);
402
403 return 0;
404
405err_out_free_netdev:
406 free_netdev(dev);
407err_out_free_res:
408 release_region(ioaddr, NE_IO_EXTENT);
409err_out:
410 pci_disable_device(pdev);
411 return -ENODEV;
412}
413
414/* Magic incantation sequence for full duplex on the supported cards.
415 */
416static inline int set_realtek_fdx(struct net_device *dev)
417{
418 long ioaddr = dev->base_addr;
419
420 outb(0xC0 + E8390_NODMA, ioaddr + NE_CMD); /* Page 3 */
421 outb(0xC0, ioaddr + 0x01); /* Enable writes to CONFIG3 */
422 outb(0x40, ioaddr + 0x06); /* Enable full duplex */
423 outb(0x00, ioaddr + 0x01); /* Disable writes to CONFIG3 */
424 outb(E8390_PAGE0 + E8390_NODMA, ioaddr + NE_CMD); /* Page 0 */
425 return 0;
426}
427
428static inline int set_holtek_fdx(struct net_device *dev)
429{
430 long ioaddr = dev->base_addr;
431
432 outb(inb(ioaddr + 0x20) | 0x80, ioaddr + 0x20);
433 return 0;
434}
435
436static int ne2k_pci_set_fdx(struct net_device *dev)
437{
438 if (ei_status.ne2k_flags & REALTEK_FDX)
439 return set_realtek_fdx(dev);
440 else if (ei_status.ne2k_flags & HOLTEK_FDX)
441 return set_holtek_fdx(dev);
442
443 return -EOPNOTSUPP;
444}
445
446static int ne2k_pci_open(struct net_device *dev)
447{
448 int ret = request_irq(dev->irq, ei_interrupt, IRQF_SHARED,
449 dev->name, dev);
450
451 if (ret)
452 return ret;
453
454 if (ei_status.ne2k_flags & FORCE_FDX)
455 ne2k_pci_set_fdx(dev);
456
457 ei_open(dev);
458 return 0;
459}
460
461static int ne2k_pci_close(struct net_device *dev)
462{
463 ei_close(dev);
464 free_irq(dev->irq, dev);
465 return 0;
466}
467
468/* Hard reset the card. This used to pause for the same period that a
469 * 8390 reset command required, but that shouldn't be necessary.
470 */
471static void ne2k_pci_reset_8390(struct net_device *dev)
472{
473 unsigned long reset_start_time = jiffies;
474 struct ei_device *ei_local = netdev_priv(dev);
475
476 netif_dbg(ei_local, hw, dev, "resetting the 8390 t=%ld...\n",
477 jiffies);
478
479 outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
480
481 ei_status.txing = 0;
482 ei_status.dmaing = 0;
483
484 /* This check _should_not_ be necessary, omit eventually. */
485 while ((inb(NE_BASE+EN0_ISR) & ENISR_RESET) == 0)
486 if (jiffies - reset_start_time > 2) {
487 netdev_err(dev, "%s did not complete.\n", __func__);
488 break;
489 }
490 /* Ack intr. */
491 outb(ENISR_RESET, NE_BASE + EN0_ISR);
492}
493
494/* Grab the 8390 specific header. Similar to the block_input routine, but
495 * we don't need to be concerned with ring wrap as the header will be at
496 * the start of a page, so we optimize accordingly.
497 */
498
499static void ne2k_pci_get_8390_hdr(struct net_device *dev,
500 struct e8390_pkt_hdr *hdr, int ring_page)
501{
502
503 long nic_base = dev->base_addr;
504
505 /* This *shouldn't* happen. If it does, it's the last thing you'll see
506 */
507 if (ei_status.dmaing) {
508 netdev_err(dev, "DMAing conflict in %s [DMAstat:%d][irqlock:%d].\n",
509 __func__, ei_status.dmaing, ei_status.irqlock);
510 return;
511 }
512
513 ei_status.dmaing |= 0x01;
514 outb(E8390_NODMA + E8390_PAGE0 + E8390_START, nic_base + NE_CMD);
515 outb(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
516 outb(0, nic_base + EN0_RCNTHI);
517 outb(0, nic_base + EN0_RSARLO); /* On page boundary */
518 outb(ring_page, nic_base + EN0_RSARHI);
519 outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
520
521 if (ei_status.ne2k_flags & ONLY_16BIT_IO) {
522 insw(NE_BASE + NE_DATAPORT, hdr,
523 sizeof(struct e8390_pkt_hdr) >> 1);
524 } else {
525 *(u32 *)hdr = le32_to_cpu(inl(NE_BASE + NE_DATAPORT));
526 le16_to_cpus(&hdr->count);
527 }
528 /* Ack intr. */
529 outb(ENISR_RDC, nic_base + EN0_ISR);
530 ei_status.dmaing &= ~0x01;
531}
532
533/* Block input and output, similar to the Crynwr packet driver. If you
534 *are porting to a new ethercard, look at the packet driver source for hints.
535 *The NEx000 doesn't share the on-board packet memory -- you have to put
536 *the packet out through the "remote DMA" dataport using outb.
537 */
538
539static void ne2k_pci_block_input(struct net_device *dev, int count,
540 struct sk_buff *skb, int ring_offset)
541{
542 long nic_base = dev->base_addr;
543 char *buf = skb->data;
544
545 /* This *shouldn't* happen.
546 * If it does, it's the last thing you'll see.
547 */
548 if (ei_status.dmaing) {
549 netdev_err(dev, "DMAing conflict in %s [DMAstat:%d][irqlock:%d]\n",
550 __func__, ei_status.dmaing, ei_status.irqlock);
551 return;
552 }
553 ei_status.dmaing |= 0x01;
554 if (ei_status.ne2k_flags & ONLY_32BIT_IO)
555 count = (count + 3) & 0xFFFC;
556 outb(E8390_NODMA + E8390_PAGE0 + E8390_START, nic_base + NE_CMD);
557 outb(count & 0xff, nic_base + EN0_RCNTLO);
558 outb(count >> 8, nic_base + EN0_RCNTHI);
559 outb(ring_offset & 0xff, nic_base + EN0_RSARLO);
560 outb(ring_offset >> 8, nic_base + EN0_RSARHI);
561 outb(E8390_RREAD + E8390_START, nic_base + NE_CMD);
562
563 if (ei_status.ne2k_flags & ONLY_16BIT_IO) {
564 insw(NE_BASE + NE_DATAPORT, buf, count >> 1);
565 if (count & 0x01)
566 buf[count-1] = inb(NE_BASE + NE_DATAPORT);
567 } else {
568 insl(NE_BASE + NE_DATAPORT, buf, count >> 2);
569 if (count & 3) {
570 buf += count & ~3;
571 if (count & 2) {
572 __le16 *b = (__le16 *)buf;
573
574 *b++ = cpu_to_le16(inw(NE_BASE + NE_DATAPORT));
575 buf = (char *)b;
576 }
577 if (count & 1)
578 *buf = inb(NE_BASE + NE_DATAPORT);
579 }
580 }
581 /* Ack intr. */
582 outb(ENISR_RDC, nic_base + EN0_ISR);
583 ei_status.dmaing &= ~0x01;
584}
585
586static void ne2k_pci_block_output(struct net_device *dev, int count,
587 const unsigned char *buf, const int start_page)
588{
589 long nic_base = NE_BASE;
590 unsigned long dma_start;
591
592 /* On little-endian it's always safe to round the count up for
593 * word writes.
594 */
595 if (ei_status.ne2k_flags & ONLY_32BIT_IO)
596 count = (count + 3) & 0xFFFC;
597 else
598 if (count & 0x01)
599 count++;
600
601 /* This *shouldn't* happen.
602 * If it does, it's the last thing you'll see.
603 */
604 if (ei_status.dmaing) {
605 netdev_err(dev, "DMAing conflict in %s [DMAstat:%d][irqlock:%d]\n",
606 __func__, ei_status.dmaing, ei_status.irqlock);
607 return;
608 }
609 ei_status.dmaing |= 0x01;
610 /* We should already be in page 0, but to be safe... */
611 outb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
612
613#ifdef NE_RW_BUGFIX
614 /* Handle the read-before-write bug the same way as the
615 * Crynwr packet driver -- the NatSemi method doesn't work.
616 * Actually this doesn't always work either, but if you have
617 * problems with your NEx000 this is better than nothing!
618 */
619 outb(0x42, nic_base + EN0_RCNTLO);
620 outb(0x00, nic_base + EN0_RCNTHI);
621 outb(0x42, nic_base + EN0_RSARLO);
622 outb(0x00, nic_base + EN0_RSARHI);
623 outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
624#endif
625 outb(ENISR_RDC, nic_base + EN0_ISR);
626
627 /* Now the normal output. */
628 outb(count & 0xff, nic_base + EN0_RCNTLO);
629 outb(count >> 8, nic_base + EN0_RCNTHI);
630 outb(0x00, nic_base + EN0_RSARLO);
631 outb(start_page, nic_base + EN0_RSARHI);
632 outb(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
633 if (ei_status.ne2k_flags & ONLY_16BIT_IO) {
634 outsw(NE_BASE + NE_DATAPORT, buf, count >> 1);
635 } else {
636 outsl(NE_BASE + NE_DATAPORT, buf, count >> 2);
637 if (count & 3) {
638 buf += count & ~3;
639 if (count & 2) {
640 __le16 *b = (__le16 *)buf;
641
642 outw(le16_to_cpu(*b++), NE_BASE + NE_DATAPORT);
643 buf = (char *)b;
644 }
645 }
646 }
647
648 dma_start = jiffies;
649
650 while ((inb(nic_base + EN0_ISR) & ENISR_RDC) == 0)
651 /* Avoid clock roll-over. */
652 if (jiffies - dma_start > 2) {
653 netdev_warn(dev, "timeout waiting for Tx RDC.\n");
654 ne2k_pci_reset_8390(dev);
655 NS8390_init(dev, 1);
656 break;
657 }
658 /* Ack intr. */
659 outb(ENISR_RDC, nic_base + EN0_ISR);
660 ei_status.dmaing &= ~0x01;
661}
662
663static void ne2k_pci_get_drvinfo(struct net_device *dev,
664 struct ethtool_drvinfo *info)
665{
666 struct ei_device *ei = netdev_priv(dev);
667 struct pci_dev *pci_dev = (struct pci_dev *) ei->priv;
668
669 strscpy(info->driver, DRV_NAME, sizeof(info->driver));
670 strscpy(info->version, DRV_VERSION, sizeof(info->version));
671 strscpy(info->bus_info, pci_name(pci_dev), sizeof(info->bus_info));
672}
673
674static u32 ne2k_pci_get_msglevel(struct net_device *dev)
675{
676 struct ei_device *ei_local = netdev_priv(dev);
677
678 return ei_local->msg_enable;
679}
680
681static void ne2k_pci_set_msglevel(struct net_device *dev, u32 v)
682{
683 struct ei_device *ei_local = netdev_priv(dev);
684
685 ei_local->msg_enable = v;
686}
687
688static const struct ethtool_ops ne2k_pci_ethtool_ops = {
689 .get_drvinfo = ne2k_pci_get_drvinfo,
690 .get_msglevel = ne2k_pci_get_msglevel,
691 .set_msglevel = ne2k_pci_set_msglevel,
692};
693
694static void ne2k_pci_remove_one(struct pci_dev *pdev)
695{
696 struct net_device *dev = pci_get_drvdata(pdev);
697
698 BUG_ON(!dev);
699 unregister_netdev(dev);
700 release_region(dev->base_addr, NE_IO_EXTENT);
701 free_netdev(dev);
702 pci_disable_device(pdev);
703}
704
705static int __maybe_unused ne2k_pci_suspend(struct device *dev_d)
706{
707 struct net_device *dev = dev_get_drvdata(dev_d);
708
709 netif_device_detach(dev);
710
711 return 0;
712}
713
714static int __maybe_unused ne2k_pci_resume(struct device *dev_d)
715{
716 struct net_device *dev = dev_get_drvdata(dev_d);
717
718 NS8390_init(dev, 1);
719 netif_device_attach(dev);
720
721 return 0;
722}
723
724static SIMPLE_DEV_PM_OPS(ne2k_pci_pm_ops, ne2k_pci_suspend, ne2k_pci_resume);
725
726static struct pci_driver ne2k_driver = {
727 .name = DRV_NAME,
728 .probe = ne2k_pci_init_one,
729 .remove = ne2k_pci_remove_one,
730 .id_table = ne2k_pci_tbl,
731 .driver.pm = &ne2k_pci_pm_ops,
732};
733
734
735static int __init ne2k_pci_init(void)
736{
737 return pci_register_driver(&ne2k_driver);
738}
739
740
741static void __exit ne2k_pci_cleanup(void)
742{
743 pci_unregister_driver(&ne2k_driver);
744}
745
746module_init(ne2k_pci_init);
747module_exit(ne2k_pci_cleanup);