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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 =
Markus Dahms2c2a8c52007-05-09 07:58:10 +020066KERN_INFO DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE " D. Becker/P. Gortmaker\n";
Linus Torvalds1da177e2005-04-16 15:20:36 -070067
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
Hormsb2fd16b2006-03-23 16:36:28 +0900119static struct {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700120 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 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);
Jeff Garzik7282d492006-09-13 14:30:00 -0400177static const struct ethtool_ops ne2k_pci_ethtool_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400179
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180
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
203
204static int __devinit ne2k_pci_init_one (struct pci_dev *pdev,
205 const struct pci_device_id *ent)
206{
207 struct net_device *dev;
208 int i;
209 unsigned char SA_prom[32];
210 int start_page, stop_page;
211 int irq, reg0, chip_idx = ent->driver_data;
212 static unsigned int fnd_cnt;
213 long ioaddr;
214 int flags = pci_clone_list[chip_idx].flags;
215
216/* when built into the kernel, we only print version if device is found */
217#ifndef MODULE
218 static int printed_version;
219 if (!printed_version++)
220 printk(version);
221#endif
222
223 fnd_cnt++;
224
225 i = pci_enable_device (pdev);
226 if (i)
227 return i;
228
229 ioaddr = pci_resource_start (pdev, 0);
230 irq = pdev->irq;
231
232 if (!ioaddr || ((pci_resource_flags (pdev, 0) & IORESOURCE_IO) == 0)) {
Jeff Garzik9b91cf92006-06-27 11:39:50 -0400233 dev_err(&pdev->dev, "no I/O resource at PCI BAR #0\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700234 return -ENODEV;
235 }
236
237 if (request_region (ioaddr, NE_IO_EXTENT, DRV_NAME) == NULL) {
Jeff Garzik9b91cf92006-06-27 11:39:50 -0400238 dev_err(&pdev->dev, "I/O resource 0x%x @ 0x%lx busy\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700239 NE_IO_EXTENT, ioaddr);
240 return -EBUSY;
241 }
242
243 reg0 = inb(ioaddr);
244 if (reg0 == 0xFF)
245 goto err_out_free_res;
246
247 /* Do a preliminary verification that we have a 8390. */
248 {
249 int regd;
250 outb(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD);
251 regd = inb(ioaddr + 0x0d);
252 outb(0xff, ioaddr + 0x0d);
253 outb(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD);
254 inb(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */
255 if (inb(ioaddr + EN0_COUNTER0) != 0) {
256 outb(reg0, ioaddr);
257 outb(regd, ioaddr + 0x0d); /* Restore the old values. */
258 goto err_out_free_res;
259 }
260 }
261
262 /* Allocate net_device, dev->priv; fill in 8390 specific dev fields. */
263 dev = alloc_ei_netdev();
264 if (!dev) {
Jeff Garzik9b91cf92006-06-27 11:39:50 -0400265 dev_err(&pdev->dev, "cannot allocate ethernet device\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700266 goto err_out_free_res;
267 }
268 SET_MODULE_OWNER(dev);
269 SET_NETDEV_DEV(dev, &pdev->dev);
270
271 /* Reset card. Who knows what dain-bramaged state it was left in. */
272 {
273 unsigned long reset_start_time = jiffies;
274
275 outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET);
276
277 /* This looks like a horrible timing loop, but it should never take
278 more than a few cycles.
279 */
280 while ((inb(ioaddr + EN0_ISR) & ENISR_RESET) == 0)
281 /* Limit wait: '2' avoids jiffy roll-over. */
282 if (jiffies - reset_start_time > 2) {
Jeff Garzik9b91cf92006-06-27 11:39:50 -0400283 dev_err(&pdev->dev,
Jeff Garzik2e8a5382006-06-27 10:47:51 -0400284 "Card failure (no reset ack).\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700285 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 }
John W. Linville78b34582005-09-12 10:48:57 -0400375 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700376
377 return 0;
378
379err_out_free_netdev:
380 free_netdev (dev);
381err_out_free_res:
382 release_region (ioaddr, NE_IO_EXTENT);
383 pci_set_drvdata (pdev, NULL);
384 return -ENODEV;
385
386}
387
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400388/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700389 * Magic incantation sequence for full duplex on the supported cards.
390 */
391static inline int set_realtek_fdx(struct net_device *dev)
392{
393 long ioaddr = dev->base_addr;
394
395 outb(0xC0 + E8390_NODMA, ioaddr + NE_CMD); /* Page 3 */
396 outb(0xC0, ioaddr + 0x01); /* Enable writes to CONFIG3 */
397 outb(0x40, ioaddr + 0x06); /* Enable full duplex */
398 outb(0x00, ioaddr + 0x01); /* Disable writes to CONFIG3 */
399 outb(E8390_PAGE0 + E8390_NODMA, ioaddr + NE_CMD); /* Page 0 */
400 return 0;
401}
402
403static inline int set_holtek_fdx(struct net_device *dev)
404{
405 long ioaddr = dev->base_addr;
406
407 outb(inb(ioaddr + 0x20) | 0x80, ioaddr + 0x20);
408 return 0;
409}
410
411static int ne2k_pci_set_fdx(struct net_device *dev)
412{
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400413 if (ei_status.ne2k_flags & REALTEK_FDX)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700414 return set_realtek_fdx(dev);
415 else if (ei_status.ne2k_flags & HOLTEK_FDX)
416 return set_holtek_fdx(dev);
417
418 return -EOPNOTSUPP;
419}
420
421static int ne2k_pci_open(struct net_device *dev)
422{
Thomas Gleixner1fb9df52006-07-01 19:29:39 -0700423 int ret = request_irq(dev->irq, ei_interrupt, IRQF_SHARED, dev->name, dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700424 if (ret)
425 return ret;
426
427 if (ei_status.ne2k_flags & FORCE_FDX)
428 ne2k_pci_set_fdx(dev);
429
430 ei_open(dev);
431 return 0;
432}
433
434static int ne2k_pci_close(struct net_device *dev)
435{
436 ei_close(dev);
437 free_irq(dev->irq, dev);
438 return 0;
439}
440
441/* Hard reset the card. This used to pause for the same period that a
442 8390 reset command required, but that shouldn't be necessary. */
443static void ne2k_pci_reset_8390(struct net_device *dev)
444{
445 unsigned long reset_start_time = jiffies;
446
447 if (debug > 1) printk("%s: Resetting the 8390 t=%ld...",
448 dev->name, jiffies);
449
450 outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
451
452 ei_status.txing = 0;
453 ei_status.dmaing = 0;
454
455 /* This check _should_not_ be necessary, omit eventually. */
456 while ((inb(NE_BASE+EN0_ISR) & ENISR_RESET) == 0)
457 if (jiffies - reset_start_time > 2) {
458 printk("%s: ne2k_pci_reset_8390() did not complete.\n", dev->name);
459 break;
460 }
461 outb(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */
462}
463
464/* Grab the 8390 specific header. Similar to the block_input routine, but
465 we don't need to be concerned with ring wrap as the header will be at
466 the start of a page, so we optimize accordingly. */
467
468static void ne2k_pci_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
469{
470
471 long nic_base = dev->base_addr;
472
473 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
474 if (ei_status.dmaing) {
475 printk("%s: DMAing conflict in ne2k_pci_get_8390_hdr "
476 "[DMAstat:%d][irqlock:%d].\n",
477 dev->name, ei_status.dmaing, ei_status.irqlock);
478 return;
479 }
480
481 ei_status.dmaing |= 0x01;
482 outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
483 outb(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
484 outb(0, nic_base + EN0_RCNTHI);
485 outb(0, nic_base + EN0_RSARLO); /* On page boundary */
486 outb(ring_page, nic_base + EN0_RSARHI);
487 outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
488
489 if (ei_status.ne2k_flags & ONLY_16BIT_IO) {
490 insw(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1);
491 } else {
492 *(u32*)hdr = le32_to_cpu(inl(NE_BASE + NE_DATAPORT));
493 le16_to_cpus(&hdr->count);
494 }
495
496 outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
497 ei_status.dmaing &= ~0x01;
498}
499
500/* Block input and output, similar to the Crynwr packet driver. If you
501 are porting to a new ethercard, look at the packet driver source for hints.
502 The NEx000 doesn't share the on-board packet memory -- you have to put
503 the packet out through the "remote DMA" dataport using outb. */
504
505static void ne2k_pci_block_input(struct net_device *dev, int count,
506 struct sk_buff *skb, int ring_offset)
507{
508 long nic_base = dev->base_addr;
509 char *buf = skb->data;
510
511 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
512 if (ei_status.dmaing) {
513 printk("%s: DMAing conflict in ne2k_pci_block_input "
514 "[DMAstat:%d][irqlock:%d].\n",
515 dev->name, ei_status.dmaing, ei_status.irqlock);
516 return;
517 }
518 ei_status.dmaing |= 0x01;
519 if (ei_status.ne2k_flags & ONLY_32BIT_IO)
520 count = (count + 3) & 0xFFFC;
521 outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
522 outb(count & 0xff, nic_base + EN0_RCNTLO);
523 outb(count >> 8, nic_base + EN0_RCNTHI);
524 outb(ring_offset & 0xff, nic_base + EN0_RSARLO);
525 outb(ring_offset >> 8, nic_base + EN0_RSARHI);
526 outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
527
528 if (ei_status.ne2k_flags & ONLY_16BIT_IO) {
529 insw(NE_BASE + NE_DATAPORT,buf,count>>1);
530 if (count & 0x01) {
531 buf[count-1] = inb(NE_BASE + NE_DATAPORT);
532 }
533 } else {
534 insl(NE_BASE + NE_DATAPORT, buf, count>>2);
535 if (count & 3) {
536 buf += count & ~3;
537 if (count & 2) {
538 u16 *b = (u16 *)buf;
539
540 *b++ = le16_to_cpu(inw(NE_BASE + NE_DATAPORT));
541 buf = (char *)b;
542 }
543 if (count & 1)
544 *buf = inb(NE_BASE + NE_DATAPORT);
545 }
546 }
547
548 outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
549 ei_status.dmaing &= ~0x01;
550}
551
552static void ne2k_pci_block_output(struct net_device *dev, int count,
553 const unsigned char *buf, const int start_page)
554{
555 long nic_base = NE_BASE;
556 unsigned long dma_start;
557
558 /* On little-endian it's always safe to round the count up for
559 word writes. */
560 if (ei_status.ne2k_flags & ONLY_32BIT_IO)
561 count = (count + 3) & 0xFFFC;
562 else
563 if (count & 0x01)
564 count++;
565
566 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
567 if (ei_status.dmaing) {
568 printk("%s: DMAing conflict in ne2k_pci_block_output."
569 "[DMAstat:%d][irqlock:%d]\n",
570 dev->name, ei_status.dmaing, ei_status.irqlock);
571 return;
572 }
573 ei_status.dmaing |= 0x01;
574 /* We should already be in page 0, but to be safe... */
575 outb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
576
577#ifdef NE8390_RW_BUGFIX
578 /* Handle the read-before-write bug the same way as the
579 Crynwr packet driver -- the NatSemi method doesn't work.
580 Actually this doesn't always work either, but if you have
581 problems with your NEx000 this is better than nothing! */
582 outb(0x42, nic_base + EN0_RCNTLO);
583 outb(0x00, nic_base + EN0_RCNTHI);
584 outb(0x42, nic_base + EN0_RSARLO);
585 outb(0x00, nic_base + EN0_RSARHI);
586 outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
587#endif
588 outb(ENISR_RDC, nic_base + EN0_ISR);
589
590 /* Now the normal output. */
591 outb(count & 0xff, nic_base + EN0_RCNTLO);
592 outb(count >> 8, nic_base + EN0_RCNTHI);
593 outb(0x00, nic_base + EN0_RSARLO);
594 outb(start_page, nic_base + EN0_RSARHI);
595 outb(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
596 if (ei_status.ne2k_flags & ONLY_16BIT_IO) {
597 outsw(NE_BASE + NE_DATAPORT, buf, count>>1);
598 } else {
599 outsl(NE_BASE + NE_DATAPORT, buf, count>>2);
600 if (count & 3) {
601 buf += count & ~3;
602 if (count & 2) {
603 u16 *b = (u16 *)buf;
604
605 outw(cpu_to_le16(*b++), NE_BASE + NE_DATAPORT);
606 buf = (char *)b;
607 }
608 }
609 }
610
611 dma_start = jiffies;
612
613 while ((inb(nic_base + EN0_ISR) & ENISR_RDC) == 0)
614 if (jiffies - dma_start > 2) { /* Avoid clock roll-over. */
615 printk(KERN_WARNING "%s: timeout waiting for Tx RDC.\n", dev->name);
616 ne2k_pci_reset_8390(dev);
617 NS8390_init(dev,1);
618 break;
619 }
620
621 outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
622 ei_status.dmaing &= ~0x01;
623 return;
624}
625
626static void ne2k_pci_get_drvinfo(struct net_device *dev,
627 struct ethtool_drvinfo *info)
628{
629 struct ei_device *ei = dev->priv;
630 struct pci_dev *pci_dev = (struct pci_dev *) ei->priv;
631
632 strcpy(info->driver, DRV_NAME);
633 strcpy(info->version, DRV_VERSION);
634 strcpy(info->bus_info, pci_name(pci_dev));
635}
636
Jeff Garzik7282d492006-09-13 14:30:00 -0400637static const struct ethtool_ops ne2k_pci_ethtool_ops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700638 .get_drvinfo = ne2k_pci_get_drvinfo,
639 .get_tx_csum = ethtool_op_get_tx_csum,
640 .get_sg = ethtool_op_get_sg,
641};
642
643static void __devexit ne2k_pci_remove_one (struct pci_dev *pdev)
644{
645 struct net_device *dev = pci_get_drvdata(pdev);
646
Eric Sesterhenn5d9428d2006-04-02 13:52:48 +0200647 BUG_ON(!dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700648 unregister_netdev(dev);
649 release_region(dev->base_addr, NE_IO_EXTENT);
650 free_netdev(dev);
651 pci_disable_device(pdev);
652 pci_set_drvdata(pdev, NULL);
653}
654
655#ifdef CONFIG_PM
656static int ne2k_pci_suspend (struct pci_dev *pdev, pm_message_t state)
657{
658 struct net_device *dev = pci_get_drvdata (pdev);
659
660 netif_device_detach(dev);
661 pci_save_state(pdev);
David Shaohua Lid58da592005-03-18 16:43:54 -0500662 pci_disable_device(pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700663 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);
Jeff Garzikcad1b9d2007-07-17 00:15:54 -0400671 int rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700672
673 pci_set_power_state(pdev, 0);
674 pci_restore_state(pdev);
Jeff Garzikcad1b9d2007-07-17 00:15:54 -0400675
676 rc = pci_enable_device(pdev);
677 if (rc)
678 return rc;
679
Linus Torvalds1da177e2005-04-16 15:20:36 -0700680 NS8390_init(dev, 1);
681 netif_device_attach(dev);
682
683 return 0;
684}
685
686#endif /* CONFIG_PM */
687
688
689static struct pci_driver ne2k_driver = {
690 .name = DRV_NAME,
691 .probe = ne2k_pci_init_one,
692 .remove = __devexit_p(ne2k_pci_remove_one),
693 .id_table = ne2k_pci_tbl,
694#ifdef CONFIG_PM
695 .suspend = ne2k_pci_suspend,
696 .resume = ne2k_pci_resume,
697#endif /* CONFIG_PM */
698
699};
700
701
702static int __init ne2k_pci_init(void)
703{
704/* when a module, this is printed whether or not devices are found in probe */
705#ifdef MODULE
706 printk(version);
707#endif
Jeff Garzik29917622006-08-19 17:48:59 -0400708 return pci_register_driver(&ne2k_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700709}
710
711
712static void __exit ne2k_pci_cleanup(void)
713{
714 pci_unregister_driver (&ne2k_driver);
715}
716
717module_init(ne2k_pci_init);
718module_exit(ne2k_pci_cleanup);