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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
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/io.h>
58#include <asm/irq.h>
59#include <asm/uaccess.h>
60
61#include "8390.h"
62
63/* These identify the driver base version and may not be removed. */
64static const char version[] __devinitconst =
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(debug, int, 0);
80module_param_array(options, int, NULL, 0);
81module_param_array(full_duplex, int, NULL, 0);
82MODULE_PARM_DESC(debug, "debug level (1-2)");
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[] __devinitdata = {
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 DEFINE_PCI_DEVICE_TABLE(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 .ndo_change_mtu = eth_change_mtu,
213#ifdef CONFIG_NET_POLL_CONTROLLER
214 .ndo_poll_controller = ei_poll,
215#endif
216};
217
218static int __devinit ne2k_pci_init_one (struct pci_dev *pdev,
219 const struct pci_device_id *ent)
220{
221 struct net_device *dev;
222 int i;
223 unsigned char SA_prom[32];
224 int start_page, stop_page;
225 int irq, reg0, chip_idx = ent->driver_data;
226 static unsigned int fnd_cnt;
227 long ioaddr;
228 int flags = pci_clone_list[chip_idx].flags;
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 return -ENODEV;
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 return -EBUSY;
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
284 SET_NETDEV_DEV(dev, &pdev->dev);
285
286 /* Reset card. Who knows what dain-bramaged state it was left in. */
287 {
288 unsigned long reset_start_time = jiffies;
289
290 outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET);
291
292 /* This looks like a horrible timing loop, but it should never take
293 more than a few cycles.
294 */
295 while ((inb(ioaddr + EN0_ISR) & ENISR_RESET) == 0)
296 /* Limit wait: '2' avoids jiffy roll-over. */
297 if (jiffies - reset_start_time > 2) {
298 dev_err(&pdev->dev,
299 "Card failure (no reset ack).\n");
300 goto err_out_free_netdev;
301 }
302
303 outb(0xff, ioaddr + EN0_ISR); /* Ack all intr. */
304 }
305
306 /* Read the 16 bytes of station address PROM.
307 We must first initialize registers, similar to NS8390_init(eifdev, 0).
308 We can't reliably read the SAPROM address without this.
309 (I learned the hard way!). */
310 {
311 struct {unsigned char value, offset; } program_seq[] = {
312 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
313 {0x49, EN0_DCFG}, /* Set word-wide access. */
314 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
315 {0x00, EN0_RCNTHI},
316 {0x00, EN0_IMR}, /* Mask completion irq. */
317 {0xFF, EN0_ISR},
318 {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */
319 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
320 {32, EN0_RCNTLO},
321 {0x00, EN0_RCNTHI},
322 {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */
323 {0x00, EN0_RSARHI},
324 {E8390_RREAD+E8390_START, E8390_CMD},
325 };
326 for (i = 0; i < ARRAY_SIZE(program_seq); i++)
327 outb(program_seq[i].value, ioaddr + program_seq[i].offset);
328
329 }
330
331 /* Note: all PCI cards have at least 16 bit access, so we don't have
332 to check for 8 bit cards. Most cards permit 32 bit access. */
333 if (flags & ONLY_32BIT_IO) {
334 for (i = 0; i < 4 ; i++)
335 ((u32 *)SA_prom)[i] = le32_to_cpu(inl(ioaddr + NE_DATAPORT));
336 } else
337 for(i = 0; i < 32 /*sizeof(SA_prom)*/; i++)
338 SA_prom[i] = inb(ioaddr + NE_DATAPORT);
339
340 /* We always set the 8390 registers for word mode. */
341 outb(0x49, ioaddr + EN0_DCFG);
342 start_page = NESM_START_PG;
343
344 stop_page = flags & STOP_PG_0x60 ? 0x60 : NESM_STOP_PG;
345
346 /* Set up the rest of the parameters. */
347 dev->irq = irq;
348 dev->base_addr = ioaddr;
349 pci_set_drvdata(pdev, dev);
350
351 ei_status.name = pci_clone_list[chip_idx].name;
352 ei_status.tx_start_page = start_page;
353 ei_status.stop_page = stop_page;
354 ei_status.word16 = 1;
355 ei_status.ne2k_flags = flags;
356 if (fnd_cnt < MAX_UNITS) {
357 if (full_duplex[fnd_cnt] > 0 || (options[fnd_cnt] & FORCE_FDX))
358 ei_status.ne2k_flags |= FORCE_FDX;
359 }
360
361 ei_status.rx_start_page = start_page + TX_PAGES;
362#ifdef PACKETBUF_MEMSIZE
363 /* Allow the packet buffer size to be overridden by know-it-alls. */
364 ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
365#endif
366
367 ei_status.reset_8390 = &ne2k_pci_reset_8390;
368 ei_status.block_input = &ne2k_pci_block_input;
369 ei_status.block_output = &ne2k_pci_block_output;
370 ei_status.get_8390_hdr = &ne2k_pci_get_8390_hdr;
371 ei_status.priv = (unsigned long) pdev;
372
373 dev->ethtool_ops = &ne2k_pci_ethtool_ops;
374 NS8390_init(dev, 0);
375
376 memcpy(dev->dev_addr, SA_prom, dev->addr_len);
377 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
378
379 i = register_netdev(dev);
380 if (i)
381 goto err_out_free_netdev;
382
383 printk("%s: %s found at %#lx, IRQ %d, %pM.\n",
384 dev->name, pci_clone_list[chip_idx].name, ioaddr, dev->irq,
385 dev->dev_addr);
386
387 return 0;
388
389err_out_free_netdev:
390 free_netdev (dev);
391err_out_free_res:
392 release_region (ioaddr, NE_IO_EXTENT);
393 pci_set_drvdata (pdev, NULL);
394 return -ENODEV;
395
396}
397
398/*
399 * Magic incantation sequence for full duplex on the supported cards.
400 */
401static inline int set_realtek_fdx(struct net_device *dev)
402{
403 long ioaddr = dev->base_addr;
404
405 outb(0xC0 + E8390_NODMA, ioaddr + NE_CMD); /* Page 3 */
406 outb(0xC0, ioaddr + 0x01); /* Enable writes to CONFIG3 */
407 outb(0x40, ioaddr + 0x06); /* Enable full duplex */
408 outb(0x00, ioaddr + 0x01); /* Disable writes to CONFIG3 */
409 outb(E8390_PAGE0 + E8390_NODMA, ioaddr + NE_CMD); /* Page 0 */
410 return 0;
411}
412
413static inline int set_holtek_fdx(struct net_device *dev)
414{
415 long ioaddr = dev->base_addr;
416
417 outb(inb(ioaddr + 0x20) | 0x80, ioaddr + 0x20);
418 return 0;
419}
420
421static int ne2k_pci_set_fdx(struct net_device *dev)
422{
423 if (ei_status.ne2k_flags & REALTEK_FDX)
424 return set_realtek_fdx(dev);
425 else if (ei_status.ne2k_flags & HOLTEK_FDX)
426 return set_holtek_fdx(dev);
427
428 return -EOPNOTSUPP;
429}
430
431static int ne2k_pci_open(struct net_device *dev)
432{
433 int ret = request_irq(dev->irq, ei_interrupt, IRQF_SHARED, dev->name, dev);
434 if (ret)
435 return ret;
436
437 if (ei_status.ne2k_flags & FORCE_FDX)
438 ne2k_pci_set_fdx(dev);
439
440 ei_open(dev);
441 return 0;
442}
443
444static int ne2k_pci_close(struct net_device *dev)
445{
446 ei_close(dev);
447 free_irq(dev->irq, dev);
448 return 0;
449}
450
451/* Hard reset the card. This used to pause for the same period that a
452 8390 reset command required, but that shouldn't be necessary. */
453static void ne2k_pci_reset_8390(struct net_device *dev)
454{
455 unsigned long reset_start_time = jiffies;
456
457 if (debug > 1) printk("%s: Resetting the 8390 t=%ld...",
458 dev->name, jiffies);
459
460 outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
461
462 ei_status.txing = 0;
463 ei_status.dmaing = 0;
464
465 /* This check _should_not_ be necessary, omit eventually. */
466 while ((inb(NE_BASE+EN0_ISR) & ENISR_RESET) == 0)
467 if (jiffies - reset_start_time > 2) {
468 printk("%s: ne2k_pci_reset_8390() did not complete.\n", dev->name);
469 break;
470 }
471 outb(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */
472}
473
474/* Grab the 8390 specific header. Similar to the block_input routine, but
475 we don't need to be concerned with ring wrap as the header will be at
476 the start of a page, so we optimize accordingly. */
477
478static void ne2k_pci_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
479{
480
481 long nic_base = dev->base_addr;
482
483 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
484 if (ei_status.dmaing) {
485 printk("%s: DMAing conflict in ne2k_pci_get_8390_hdr "
486 "[DMAstat:%d][irqlock:%d].\n",
487 dev->name, ei_status.dmaing, ei_status.irqlock);
488 return;
489 }
490
491 ei_status.dmaing |= 0x01;
492 outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
493 outb(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
494 outb(0, nic_base + EN0_RCNTHI);
495 outb(0, nic_base + EN0_RSARLO); /* On page boundary */
496 outb(ring_page, nic_base + EN0_RSARHI);
497 outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
498
499 if (ei_status.ne2k_flags & ONLY_16BIT_IO) {
500 insw(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1);
501 } else {
502 *(u32*)hdr = le32_to_cpu(inl(NE_BASE + NE_DATAPORT));
503 le16_to_cpus(&hdr->count);
504 }
505
506 outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
507 ei_status.dmaing &= ~0x01;
508}
509
510/* Block input and output, similar to the Crynwr packet driver. If you
511 are porting to a new ethercard, look at the packet driver source for hints.
512 The NEx000 doesn't share the on-board packet memory -- you have to put
513 the packet out through the "remote DMA" dataport using outb. */
514
515static void ne2k_pci_block_input(struct net_device *dev, int count,
516 struct sk_buff *skb, int ring_offset)
517{
518 long nic_base = dev->base_addr;
519 char *buf = skb->data;
520
521 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
522 if (ei_status.dmaing) {
523 printk("%s: DMAing conflict in ne2k_pci_block_input "
524 "[DMAstat:%d][irqlock:%d].\n",
525 dev->name, ei_status.dmaing, ei_status.irqlock);
526 return;
527 }
528 ei_status.dmaing |= 0x01;
529 if (ei_status.ne2k_flags & ONLY_32BIT_IO)
530 count = (count + 3) & 0xFFFC;
531 outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
532 outb(count & 0xff, nic_base + EN0_RCNTLO);
533 outb(count >> 8, nic_base + EN0_RCNTHI);
534 outb(ring_offset & 0xff, nic_base + EN0_RSARLO);
535 outb(ring_offset >> 8, nic_base + EN0_RSARHI);
536 outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
537
538 if (ei_status.ne2k_flags & ONLY_16BIT_IO) {
539 insw(NE_BASE + NE_DATAPORT,buf,count>>1);
540 if (count & 0x01) {
541 buf[count-1] = inb(NE_BASE + NE_DATAPORT);
542 }
543 } else {
544 insl(NE_BASE + NE_DATAPORT, buf, count>>2);
545 if (count & 3) {
546 buf += count & ~3;
547 if (count & 2) {
548 __le16 *b = (__le16 *)buf;
549
550 *b++ = cpu_to_le16(inw(NE_BASE + NE_DATAPORT));
551 buf = (char *)b;
552 }
553 if (count & 1)
554 *buf = inb(NE_BASE + NE_DATAPORT);
555 }
556 }
557
558 outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
559 ei_status.dmaing &= ~0x01;
560}
561
562static void ne2k_pci_block_output(struct net_device *dev, int count,
563 const unsigned char *buf, const int start_page)
564{
565 long nic_base = NE_BASE;
566 unsigned long dma_start;
567
568 /* On little-endian it's always safe to round the count up for
569 word writes. */
570 if (ei_status.ne2k_flags & ONLY_32BIT_IO)
571 count = (count + 3) & 0xFFFC;
572 else
573 if (count & 0x01)
574 count++;
575
576 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
577 if (ei_status.dmaing) {
578 printk("%s: DMAing conflict in ne2k_pci_block_output."
579 "[DMAstat:%d][irqlock:%d]\n",
580 dev->name, ei_status.dmaing, ei_status.irqlock);
581 return;
582 }
583 ei_status.dmaing |= 0x01;
584 /* We should already be in page 0, but to be safe... */
585 outb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
586
587#ifdef NE8390_RW_BUGFIX
588 /* Handle the read-before-write bug the same way as the
589 Crynwr packet driver -- the NatSemi method doesn't work.
590 Actually this doesn't always work either, but if you have
591 problems with your NEx000 this is better than nothing! */
592 outb(0x42, nic_base + EN0_RCNTLO);
593 outb(0x00, nic_base + EN0_RCNTHI);
594 outb(0x42, nic_base + EN0_RSARLO);
595 outb(0x00, nic_base + EN0_RSARHI);
596 outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
597#endif
598 outb(ENISR_RDC, nic_base + EN0_ISR);
599
600 /* Now the normal output. */
601 outb(count & 0xff, nic_base + EN0_RCNTLO);
602 outb(count >> 8, nic_base + EN0_RCNTHI);
603 outb(0x00, nic_base + EN0_RSARLO);
604 outb(start_page, nic_base + EN0_RSARHI);
605 outb(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
606 if (ei_status.ne2k_flags & ONLY_16BIT_IO) {
607 outsw(NE_BASE + NE_DATAPORT, buf, count>>1);
608 } else {
609 outsl(NE_BASE + NE_DATAPORT, buf, count>>2);
610 if (count & 3) {
611 buf += count & ~3;
612 if (count & 2) {
613 __le16 *b = (__le16 *)buf;
614
615 outw(le16_to_cpu(*b++), NE_BASE + NE_DATAPORT);
616 buf = (char *)b;
617 }
618 }
619 }
620
621 dma_start = jiffies;
622
623 while ((inb(nic_base + EN0_ISR) & ENISR_RDC) == 0)
624 if (jiffies - dma_start > 2) { /* Avoid clock roll-over. */
625 printk(KERN_WARNING "%s: timeout waiting for Tx RDC.\n", dev->name);
626 ne2k_pci_reset_8390(dev);
627 NS8390_init(dev,1);
628 break;
629 }
630
631 outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
632 ei_status.dmaing &= ~0x01;
633}
634
635static void ne2k_pci_get_drvinfo(struct net_device *dev,
636 struct ethtool_drvinfo *info)
637{
638 struct ei_device *ei = netdev_priv(dev);
639 struct pci_dev *pci_dev = (struct pci_dev *) ei->priv;
640
641 strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
642 strlcpy(info->version, DRV_VERSION, sizeof(info->version));
643 strlcpy(info->bus_info, pci_name(pci_dev), sizeof(info->bus_info));
644}
645
646static const struct ethtool_ops ne2k_pci_ethtool_ops = {
647 .get_drvinfo = ne2k_pci_get_drvinfo,
648};
649
650static void __devexit ne2k_pci_remove_one (struct pci_dev *pdev)
651{
652 struct net_device *dev = pci_get_drvdata(pdev);
653
654 BUG_ON(!dev);
655 unregister_netdev(dev);
656 release_region(dev->base_addr, NE_IO_EXTENT);
657 free_netdev(dev);
658 pci_disable_device(pdev);
659 pci_set_drvdata(pdev, NULL);
660}
661
662#ifdef CONFIG_PM
663static int ne2k_pci_suspend (struct pci_dev *pdev, pm_message_t state)
664{
665 struct net_device *dev = pci_get_drvdata (pdev);
666
667 netif_device_detach(dev);
668 pci_save_state(pdev);
669 pci_disable_device(pdev);
670 pci_set_power_state(pdev, pci_choose_state(pdev, state));
671
672 return 0;
673}
674
675static int ne2k_pci_resume (struct pci_dev *pdev)
676{
677 struct net_device *dev = pci_get_drvdata (pdev);
678 int rc;
679
680 pci_set_power_state(pdev, 0);
681 pci_restore_state(pdev);
682
683 rc = pci_enable_device(pdev);
684 if (rc)
685 return rc;
686
687 NS8390_init(dev, 1);
688 netif_device_attach(dev);
689
690 return 0;
691}
692
693#endif /* CONFIG_PM */
694
695
696static struct pci_driver ne2k_driver = {
697 .name = DRV_NAME,
698 .probe = ne2k_pci_init_one,
699 .remove = __devexit_p(ne2k_pci_remove_one),
700 .id_table = ne2k_pci_tbl,
701#ifdef CONFIG_PM
702 .suspend = ne2k_pci_suspend,
703 .resume = ne2k_pci_resume,
704#endif /* CONFIG_PM */
705
706};
707
708
709static int __init ne2k_pci_init(void)
710{
711/* when a module, this is printed whether or not devices are found in probe */
712#ifdef MODULE
713 printk(version);
714#endif
715 return pci_register_driver(&ne2k_driver);
716}
717
718
719static void __exit ne2k_pci_cleanup(void)
720{
721 pci_unregister_driver (&ne2k_driver);
722}
723
724module_init(ne2k_pci_init);
725module_exit(ne2k_pci_cleanup);