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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/* 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
36static int debug = 1; /* 1 normal messages, 0 quiet .. 7 verbose. */
37
38#define MAX_UNITS 8 /* More are supported, limit only on options */
39/* Used to pass the full-duplex flag, etc. */
40static int full_duplex[MAX_UNITS];
41static int options[MAX_UNITS];
42
43/* Force a non std. amount of memory. Units are 256 byte pages. */
44/* #define PACKETBUF_MEMSIZE 0x40 */
45
46
47#include <linux/module.h>
48#include <linux/kernel.h>
49#include <linux/errno.h>
50#include <linux/pci.h>
51#include <linux/init.h>
52#include <linux/interrupt.h>
53#include <linux/ethtool.h>
54#include <linux/netdevice.h>
55#include <linux/etherdevice.h>
56
57#include <asm/system.h>
58#include <asm/io.h>
59#include <asm/irq.h>
60#include <asm/uaccess.h>
61
62#include "8390.h"
63
64/* These identify the driver base version and may not be removed. */
65static char version[] __devinitdata =
66KERN_INFO DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE " D. Becker/P. Gortmaker\n"
67KERN_INFO " http://www.scyld.com/network/ne2k-pci.html\n";
68
69#if defined(__powerpc__)
70#define inl_le(addr) le32_to_cpu(inl(addr))
71#define inw_le(addr) le16_to_cpu(inw(addr))
72#endif
73
74#define PFX DRV_NAME ": "
75
76MODULE_AUTHOR("Donald Becker / Paul Gortmaker");
77MODULE_DESCRIPTION("PCI NE2000 clone driver");
78MODULE_LICENSE("GPL");
79
80module_param(debug, int, 0);
81module_param_array(options, int, NULL, 0);
82module_param_array(full_duplex, int, NULL, 0);
83MODULE_PARM_DESC(debug, "debug level (1-2)");
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/* Use 32 bit data-movement operations instead of 16 bit. */
90#define USE_LONGIO
91
92/* Do we implement the read before write bugfix ? */
93/* #define NE_RW_BUGFIX */
94
95/* Flags. We rename an existing ei_status field to store flags! */
96/* Thus only the low 8 bits are usable for non-init-time flags. */
97#define ne2k_flags reg0
98enum {
99 ONLY_16BIT_IO=8, ONLY_32BIT_IO=4, /* Chip can do only 16/32-bit xfers. */
100 FORCE_FDX=0x20, /* User override. */
101 REALTEK_FDX=0x40, HOLTEK_FDX=0x80,
102 STOP_PG_0x60=0x100,
103};
104
105enum ne2k_pci_chipsets {
106 CH_RealTek_RTL_8029 = 0,
107 CH_Winbond_89C940,
108 CH_Compex_RL2000,
109 CH_KTI_ET32P2,
110 CH_NetVin_NV5000SC,
111 CH_Via_86C926,
112 CH_SureCom_NE34,
113 CH_Winbond_W89C940F,
114 CH_Holtek_HT80232,
115 CH_Holtek_HT80229,
116 CH_Winbond_89C940_8c4a,
117};
118
119
120static struct {
121 char *name;
122 int flags;
123} pci_clone_list[] __devinitdata = {
124 {"RealTek RTL-8029", REALTEK_FDX},
125 {"Winbond 89C940", 0},
126 {"Compex RL2000", 0},
127 {"KTI ET32P2", 0},
128 {"NetVin NV5000SC", 0},
129 {"Via 86C926", ONLY_16BIT_IO},
130 {"SureCom NE34", 0},
131 {"Winbond W89C940F", 0},
132 {"Holtek HT80232", ONLY_16BIT_IO | HOLTEK_FDX},
133 {"Holtek HT80229", ONLY_32BIT_IO | HOLTEK_FDX | STOP_PG_0x60 },
134 {"Winbond W89C940(misprogrammed)", 0},
135 {NULL,}
136};
137
138
139static struct pci_device_id ne2k_pci_tbl[] = {
140 { 0x10ec, 0x8029, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_RealTek_RTL_8029 },
141 { 0x1050, 0x0940, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Winbond_89C940 },
142 { 0x11f6, 0x1401, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Compex_RL2000 },
143 { 0x8e2e, 0x3000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_KTI_ET32P2 },
144 { 0x4a14, 0x5000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_NetVin_NV5000SC },
145 { 0x1106, 0x0926, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Via_86C926 },
146 { 0x10bd, 0x0e34, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_SureCom_NE34 },
147 { 0x1050, 0x5a5a, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Winbond_W89C940F },
148 { 0x12c3, 0x0058, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Holtek_HT80232 },
149 { 0x12c3, 0x5598, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Holtek_HT80229 },
150 { 0x8c4a, 0x1980, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Winbond_89C940_8c4a },
151 { 0, }
152};
153MODULE_DEVICE_TABLE(pci, ne2k_pci_tbl);
154
155
156/* ---- No user-serviceable parts below ---- */
157
158#define NE_BASE (dev->base_addr)
159#define NE_CMD 0x00
160#define NE_DATAPORT 0x10 /* NatSemi-defined port window offset. */
161#define NE_RESET 0x1f /* Issue a read to reset, a write to clear. */
162#define NE_IO_EXTENT 0x20
163
164#define NESM_START_PG 0x40 /* First page of TX buffer */
165#define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */
166
167
168static int ne2k_pci_open(struct net_device *dev);
169static int ne2k_pci_close(struct net_device *dev);
170
171static void ne2k_pci_reset_8390(struct net_device *dev);
172static void ne2k_pci_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
173 int ring_page);
174static void ne2k_pci_block_input(struct net_device *dev, int count,
175 struct sk_buff *skb, int ring_offset);
176static void ne2k_pci_block_output(struct net_device *dev, const int count,
177 const unsigned char *buf, const int start_page);
178static struct ethtool_ops ne2k_pci_ethtool_ops;
179
180
181
182/* There is no room in the standard 8390 structure for extra info we need,
183 so we build a meta/outer-wrapper structure.. */
184struct ne2k_pci_card {
185 struct net_device *dev;
186 struct pci_dev *pci_dev;
187};
188
189
190
191/*
192 NEx000-clone boards have a Station Address (SA) PROM (SAPROM) in the packet
193 buffer memory space. By-the-spec NE2000 clones have 0x57,0x57 in bytes
194 0x0e,0x0f of the SAPROM, while other supposed NE2000 clones must be
195 detected by their SA prefix.
196
197 Reading the SAPROM from a word-wide card with the 8390 set in byte-wide
198 mode results in doubled values, which can be detected and compensated for.
199
200 The probe is also responsible for initializing the card and filling
201 in the 'dev' and 'ei_status' structures.
202*/
203
204
205static int __devinit ne2k_pci_init_one (struct pci_dev *pdev,
206 const struct pci_device_id *ent)
207{
208 struct net_device *dev;
209 int i;
210 unsigned char SA_prom[32];
211 int start_page, stop_page;
212 int irq, reg0, chip_idx = ent->driver_data;
213 static unsigned int fnd_cnt;
214 long ioaddr;
215 int flags = pci_clone_list[chip_idx].flags;
216
217/* when built into the kernel, we only print version if device is found */
218#ifndef MODULE
219 static int printed_version;
220 if (!printed_version++)
221 printk(version);
222#endif
223
224 fnd_cnt++;
225
226 i = pci_enable_device (pdev);
227 if (i)
228 return i;
229
230 ioaddr = pci_resource_start (pdev, 0);
231 irq = pdev->irq;
232
233 if (!ioaddr || ((pci_resource_flags (pdev, 0) & IORESOURCE_IO) == 0)) {
234 printk (KERN_ERR PFX "no I/O resource at PCI BAR #0\n");
235 return -ENODEV;
236 }
237
238 if (request_region (ioaddr, NE_IO_EXTENT, DRV_NAME) == NULL) {
239 printk (KERN_ERR PFX "I/O resource 0x%x @ 0x%lx busy\n",
240 NE_IO_EXTENT, ioaddr);
241 return -EBUSY;
242 }
243
244 reg0 = inb(ioaddr);
245 if (reg0 == 0xFF)
246 goto err_out_free_res;
247
248 /* Do a preliminary verification that we have a 8390. */
249 {
250 int regd;
251 outb(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD);
252 regd = inb(ioaddr + 0x0d);
253 outb(0xff, ioaddr + 0x0d);
254 outb(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD);
255 inb(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */
256 if (inb(ioaddr + EN0_COUNTER0) != 0) {
257 outb(reg0, ioaddr);
258 outb(regd, ioaddr + 0x0d); /* Restore the old values. */
259 goto err_out_free_res;
260 }
261 }
262
263 /* Allocate net_device, dev->priv; fill in 8390 specific dev fields. */
264 dev = alloc_ei_netdev();
265 if (!dev) {
266 printk (KERN_ERR PFX "cannot allocate ethernet device\n");
267 goto err_out_free_res;
268 }
269 SET_MODULE_OWNER(dev);
270 SET_NETDEV_DEV(dev, &pdev->dev);
271
272 /* Reset card. Who knows what dain-bramaged state it was left in. */
273 {
274 unsigned long reset_start_time = jiffies;
275
276 outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET);
277
278 /* This looks like a horrible timing loop, but it should never take
279 more than a few cycles.
280 */
281 while ((inb(ioaddr + EN0_ISR) & ENISR_RESET) == 0)
282 /* Limit wait: '2' avoids jiffy roll-over. */
283 if (jiffies - reset_start_time > 2) {
284 printk(KERN_ERR PFX "Card failure (no reset ack).\n");
285 goto err_out_free_netdev;
286 }
287
288 outb(0xff, ioaddr + EN0_ISR); /* Ack all intr. */
289 }
290
291 /* Read the 16 bytes of station address PROM.
292 We must first initialize registers, similar to NS8390_init(eifdev, 0).
293 We can't reliably read the SAPROM address without this.
294 (I learned the hard way!). */
295 {
296 struct {unsigned char value, offset; } program_seq[] = {
297 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
298 {0x49, EN0_DCFG}, /* Set word-wide access. */
299 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
300 {0x00, EN0_RCNTHI},
301 {0x00, EN0_IMR}, /* Mask completion irq. */
302 {0xFF, EN0_ISR},
303 {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */
304 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
305 {32, EN0_RCNTLO},
306 {0x00, EN0_RCNTHI},
307 {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */
308 {0x00, EN0_RSARHI},
309 {E8390_RREAD+E8390_START, E8390_CMD},
310 };
311 for (i = 0; i < sizeof(program_seq)/sizeof(program_seq[0]); i++)
312 outb(program_seq[i].value, ioaddr + program_seq[i].offset);
313
314 }
315
316 /* Note: all PCI cards have at least 16 bit access, so we don't have
317 to check for 8 bit cards. Most cards permit 32 bit access. */
318 if (flags & ONLY_32BIT_IO) {
319 for (i = 0; i < 4 ; i++)
320 ((u32 *)SA_prom)[i] = le32_to_cpu(inl(ioaddr + NE_DATAPORT));
321 } else
322 for(i = 0; i < 32 /*sizeof(SA_prom)*/; i++)
323 SA_prom[i] = inb(ioaddr + NE_DATAPORT);
324
325 /* We always set the 8390 registers for word mode. */
326 outb(0x49, ioaddr + EN0_DCFG);
327 start_page = NESM_START_PG;
328
329 stop_page = flags & STOP_PG_0x60 ? 0x60 : NESM_STOP_PG;
330
331 /* Set up the rest of the parameters. */
332 dev->irq = irq;
333 dev->base_addr = ioaddr;
334 pci_set_drvdata(pdev, dev);
335
336 ei_status.name = pci_clone_list[chip_idx].name;
337 ei_status.tx_start_page = start_page;
338 ei_status.stop_page = stop_page;
339 ei_status.word16 = 1;
340 ei_status.ne2k_flags = flags;
341 if (fnd_cnt < MAX_UNITS) {
342 if (full_duplex[fnd_cnt] > 0 || (options[fnd_cnt] & FORCE_FDX))
343 ei_status.ne2k_flags |= FORCE_FDX;
344 }
345
346 ei_status.rx_start_page = start_page + TX_PAGES;
347#ifdef PACKETBUF_MEMSIZE
348 /* Allow the packet buffer size to be overridden by know-it-alls. */
349 ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
350#endif
351
352 ei_status.reset_8390 = &ne2k_pci_reset_8390;
353 ei_status.block_input = &ne2k_pci_block_input;
354 ei_status.block_output = &ne2k_pci_block_output;
355 ei_status.get_8390_hdr = &ne2k_pci_get_8390_hdr;
356 ei_status.priv = (unsigned long) pdev;
357 dev->open = &ne2k_pci_open;
358 dev->stop = &ne2k_pci_close;
359 dev->ethtool_ops = &ne2k_pci_ethtool_ops;
360#ifdef CONFIG_NET_POLL_CONTROLLER
361 dev->poll_controller = ei_poll;
362#endif
363 NS8390_init(dev, 0);
364
365 i = register_netdev(dev);
366 if (i)
367 goto err_out_free_netdev;
368
369 printk("%s: %s found at %#lx, IRQ %d, ",
370 dev->name, pci_clone_list[chip_idx].name, ioaddr, dev->irq);
371 for(i = 0; i < 6; i++) {
372 printk("%2.2X%s", SA_prom[i], i == 5 ? ".\n": ":");
373 dev->dev_addr[i] = SA_prom[i];
374 }
375
376 return 0;
377
378err_out_free_netdev:
379 free_netdev (dev);
380err_out_free_res:
381 release_region (ioaddr, NE_IO_EXTENT);
382 pci_set_drvdata (pdev, NULL);
383 return -ENODEV;
384
385}
386
387/*
388 * Magic incantation sequence for full duplex on the supported cards.
389 */
390static inline int set_realtek_fdx(struct net_device *dev)
391{
392 long ioaddr = dev->base_addr;
393
394 outb(0xC0 + E8390_NODMA, ioaddr + NE_CMD); /* Page 3 */
395 outb(0xC0, ioaddr + 0x01); /* Enable writes to CONFIG3 */
396 outb(0x40, ioaddr + 0x06); /* Enable full duplex */
397 outb(0x00, ioaddr + 0x01); /* Disable writes to CONFIG3 */
398 outb(E8390_PAGE0 + E8390_NODMA, ioaddr + NE_CMD); /* Page 0 */
399 return 0;
400}
401
402static inline int set_holtek_fdx(struct net_device *dev)
403{
404 long ioaddr = dev->base_addr;
405
406 outb(inb(ioaddr + 0x20) | 0x80, ioaddr + 0x20);
407 return 0;
408}
409
410static int ne2k_pci_set_fdx(struct net_device *dev)
411{
412 if (ei_status.ne2k_flags & REALTEK_FDX)
413 return set_realtek_fdx(dev);
414 else if (ei_status.ne2k_flags & HOLTEK_FDX)
415 return set_holtek_fdx(dev);
416
417 return -EOPNOTSUPP;
418}
419
420static int ne2k_pci_open(struct net_device *dev)
421{
422 int ret = request_irq(dev->irq, ei_interrupt, SA_SHIRQ, dev->name, dev);
423 if (ret)
424 return ret;
425
426 if (ei_status.ne2k_flags & FORCE_FDX)
427 ne2k_pci_set_fdx(dev);
428
429 ei_open(dev);
430 return 0;
431}
432
433static int ne2k_pci_close(struct net_device *dev)
434{
435 ei_close(dev);
436 free_irq(dev->irq, dev);
437 return 0;
438}
439
440/* Hard reset the card. This used to pause for the same period that a
441 8390 reset command required, but that shouldn't be necessary. */
442static void ne2k_pci_reset_8390(struct net_device *dev)
443{
444 unsigned long reset_start_time = jiffies;
445
446 if (debug > 1) printk("%s: Resetting the 8390 t=%ld...",
447 dev->name, jiffies);
448
449 outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
450
451 ei_status.txing = 0;
452 ei_status.dmaing = 0;
453
454 /* This check _should_not_ be necessary, omit eventually. */
455 while ((inb(NE_BASE+EN0_ISR) & ENISR_RESET) == 0)
456 if (jiffies - reset_start_time > 2) {
457 printk("%s: ne2k_pci_reset_8390() did not complete.\n", dev->name);
458 break;
459 }
460 outb(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */
461}
462
463/* Grab the 8390 specific header. Similar to the block_input routine, but
464 we don't need to be concerned with ring wrap as the header will be at
465 the start of a page, so we optimize accordingly. */
466
467static void ne2k_pci_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
468{
469
470 long nic_base = dev->base_addr;
471
472 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
473 if (ei_status.dmaing) {
474 printk("%s: DMAing conflict in ne2k_pci_get_8390_hdr "
475 "[DMAstat:%d][irqlock:%d].\n",
476 dev->name, ei_status.dmaing, ei_status.irqlock);
477 return;
478 }
479
480 ei_status.dmaing |= 0x01;
481 outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
482 outb(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
483 outb(0, nic_base + EN0_RCNTHI);
484 outb(0, nic_base + EN0_RSARLO); /* On page boundary */
485 outb(ring_page, nic_base + EN0_RSARHI);
486 outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
487
488 if (ei_status.ne2k_flags & ONLY_16BIT_IO) {
489 insw(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1);
490 } else {
491 *(u32*)hdr = le32_to_cpu(inl(NE_BASE + NE_DATAPORT));
492 le16_to_cpus(&hdr->count);
493 }
494
495 outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
496 ei_status.dmaing &= ~0x01;
497}
498
499/* Block input and output, similar to the Crynwr packet driver. If you
500 are porting to a new ethercard, look at the packet driver source for hints.
501 The NEx000 doesn't share the on-board packet memory -- you have to put
502 the packet out through the "remote DMA" dataport using outb. */
503
504static void ne2k_pci_block_input(struct net_device *dev, int count,
505 struct sk_buff *skb, int ring_offset)
506{
507 long nic_base = dev->base_addr;
508 char *buf = skb->data;
509
510 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
511 if (ei_status.dmaing) {
512 printk("%s: DMAing conflict in ne2k_pci_block_input "
513 "[DMAstat:%d][irqlock:%d].\n",
514 dev->name, ei_status.dmaing, ei_status.irqlock);
515 return;
516 }
517 ei_status.dmaing |= 0x01;
518 if (ei_status.ne2k_flags & ONLY_32BIT_IO)
519 count = (count + 3) & 0xFFFC;
520 outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
521 outb(count & 0xff, nic_base + EN0_RCNTLO);
522 outb(count >> 8, nic_base + EN0_RCNTHI);
523 outb(ring_offset & 0xff, nic_base + EN0_RSARLO);
524 outb(ring_offset >> 8, nic_base + EN0_RSARHI);
525 outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
526
527 if (ei_status.ne2k_flags & ONLY_16BIT_IO) {
528 insw(NE_BASE + NE_DATAPORT,buf,count>>1);
529 if (count & 0x01) {
530 buf[count-1] = inb(NE_BASE + NE_DATAPORT);
531 }
532 } else {
533 insl(NE_BASE + NE_DATAPORT, buf, count>>2);
534 if (count & 3) {
535 buf += count & ~3;
536 if (count & 2) {
537 u16 *b = (u16 *)buf;
538
539 *b++ = le16_to_cpu(inw(NE_BASE + NE_DATAPORT));
540 buf = (char *)b;
541 }
542 if (count & 1)
543 *buf = inb(NE_BASE + NE_DATAPORT);
544 }
545 }
546
547 outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
548 ei_status.dmaing &= ~0x01;
549}
550
551static void ne2k_pci_block_output(struct net_device *dev, int count,
552 const unsigned char *buf, const int start_page)
553{
554 long nic_base = NE_BASE;
555 unsigned long dma_start;
556
557 /* On little-endian it's always safe to round the count up for
558 word writes. */
559 if (ei_status.ne2k_flags & ONLY_32BIT_IO)
560 count = (count + 3) & 0xFFFC;
561 else
562 if (count & 0x01)
563 count++;
564
565 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
566 if (ei_status.dmaing) {
567 printk("%s: DMAing conflict in ne2k_pci_block_output."
568 "[DMAstat:%d][irqlock:%d]\n",
569 dev->name, ei_status.dmaing, ei_status.irqlock);
570 return;
571 }
572 ei_status.dmaing |= 0x01;
573 /* We should already be in page 0, but to be safe... */
574 outb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
575
576#ifdef NE8390_RW_BUGFIX
577 /* Handle the read-before-write bug the same way as the
578 Crynwr packet driver -- the NatSemi method doesn't work.
579 Actually this doesn't always work either, but if you have
580 problems with your NEx000 this is better than nothing! */
581 outb(0x42, nic_base + EN0_RCNTLO);
582 outb(0x00, nic_base + EN0_RCNTHI);
583 outb(0x42, nic_base + EN0_RSARLO);
584 outb(0x00, nic_base + EN0_RSARHI);
585 outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
586#endif
587 outb(ENISR_RDC, nic_base + EN0_ISR);
588
589 /* Now the normal output. */
590 outb(count & 0xff, nic_base + EN0_RCNTLO);
591 outb(count >> 8, nic_base + EN0_RCNTHI);
592 outb(0x00, nic_base + EN0_RSARLO);
593 outb(start_page, nic_base + EN0_RSARHI);
594 outb(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
595 if (ei_status.ne2k_flags & ONLY_16BIT_IO) {
596 outsw(NE_BASE + NE_DATAPORT, buf, count>>1);
597 } else {
598 outsl(NE_BASE + NE_DATAPORT, buf, count>>2);
599 if (count & 3) {
600 buf += count & ~3;
601 if (count & 2) {
602 u16 *b = (u16 *)buf;
603
604 outw(cpu_to_le16(*b++), NE_BASE + NE_DATAPORT);
605 buf = (char *)b;
606 }
607 }
608 }
609
610 dma_start = jiffies;
611
612 while ((inb(nic_base + EN0_ISR) & ENISR_RDC) == 0)
613 if (jiffies - dma_start > 2) { /* Avoid clock roll-over. */
614 printk(KERN_WARNING "%s: timeout waiting for Tx RDC.\n", dev->name);
615 ne2k_pci_reset_8390(dev);
616 NS8390_init(dev,1);
617 break;
618 }
619
620 outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
621 ei_status.dmaing &= ~0x01;
622 return;
623}
624
625static void ne2k_pci_get_drvinfo(struct net_device *dev,
626 struct ethtool_drvinfo *info)
627{
628 struct ei_device *ei = dev->priv;
629 struct pci_dev *pci_dev = (struct pci_dev *) ei->priv;
630
631 strcpy(info->driver, DRV_NAME);
632 strcpy(info->version, DRV_VERSION);
633 strcpy(info->bus_info, pci_name(pci_dev));
634}
635
636static struct ethtool_ops ne2k_pci_ethtool_ops = {
637 .get_drvinfo = ne2k_pci_get_drvinfo,
638 .get_tx_csum = ethtool_op_get_tx_csum,
639 .get_sg = ethtool_op_get_sg,
640};
641
642static void __devexit ne2k_pci_remove_one (struct pci_dev *pdev)
643{
644 struct net_device *dev = pci_get_drvdata(pdev);
645
646 if (!dev)
647 BUG();
648
649 unregister_netdev(dev);
650 release_region(dev->base_addr, NE_IO_EXTENT);
651 free_netdev(dev);
652 pci_disable_device(pdev);
653 pci_set_drvdata(pdev, NULL);
654}
655
656#ifdef CONFIG_PM
657static int ne2k_pci_suspend (struct pci_dev *pdev, pm_message_t state)
658{
659 struct net_device *dev = pci_get_drvdata (pdev);
660
661 netif_device_detach(dev);
662 pci_save_state(pdev);
663 pci_set_power_state(pdev, pci_choose_state(pdev, state));
664
665 return 0;
666}
667
668static int ne2k_pci_resume (struct pci_dev *pdev)
669{
670 struct net_device *dev = pci_get_drvdata (pdev);
671
672 pci_set_power_state(pdev, 0);
673 pci_restore_state(pdev);
674 NS8390_init(dev, 1);
675 netif_device_attach(dev);
676
677 return 0;
678}
679
680#endif /* CONFIG_PM */
681
682
683static struct pci_driver ne2k_driver = {
684 .name = DRV_NAME,
685 .probe = ne2k_pci_init_one,
686 .remove = __devexit_p(ne2k_pci_remove_one),
687 .id_table = ne2k_pci_tbl,
688#ifdef CONFIG_PM
689 .suspend = ne2k_pci_suspend,
690 .resume = ne2k_pci_resume,
691#endif /* CONFIG_PM */
692
693};
694
695
696static int __init ne2k_pci_init(void)
697{
698/* when a module, this is printed whether or not devices are found in probe */
699#ifdef MODULE
700 printk(version);
701#endif
702 return pci_module_init (&ne2k_driver);
703}
704
705
706static void __exit ne2k_pci_cleanup(void)
707{
708 pci_unregister_driver (&ne2k_driver);
709}
710
711module_init(ne2k_pci_init);
712module_exit(ne2k_pci_cleanup);