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1// SPDX-License-Identifier: GPL-1.0+
2/* A Linux device driver for PCI NE2000 clones.
3 *
4 * Authors and other copyright holders:
5 * 1992-2000 by Donald Becker, NE2000 core and various modifications.
6 * 1995-1998 by Paul Gortmaker, core modifications and PCI support.
7 * Copyright 1993 assigned to the United States Government as represented
8 * by the Director, National Security Agency.
9 *
10 * This software may be used and distributed according to the terms of
11 * the GNU General Public License (GPL), incorporated herein by reference.
12 * Drivers based on or derived from this code fall under the GPL and must
13 * retain the authorship, copyright and license notice. This file is not
14 * a complete program and may only be used when the entire operating
15 * system is licensed under the GPL.
16 *
17 * The author may be reached as becker@scyld.com, or C/O
18 * Scyld Computing Corporation
19 * 410 Severn Ave., Suite 210
20 * Annapolis MD 21403
21 *
22 * Issues remaining:
23 * People are making PCI NE2000 clones! Oh the horror, the horror...
24 * Limited full-duplex support.
25 */
26
27#define DRV_NAME "ne2k-pci"
28#define DRV_DESCRIPTION "PCI NE2000 clone driver"
29#define DRV_AUTHOR "Donald Becker / Paul Gortmaker"
30#define DRV_VERSION "1.03"
31#define DRV_RELDATE "9/22/2003"
32
33#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
34
35/* The user-configurable values.
36 * These may be modified when a driver module is loaded.
37 */
38
39/* More are supported, limit only on options */
40#define MAX_UNITS 8
41
42/* Used to pass the full-duplex flag, etc. */
43static int full_duplex[MAX_UNITS];
44static int options[MAX_UNITS];
45
46/* Force a non std. amount of memory. Units are 256 byte pages. */
47/* #define PACKETBUF_MEMSIZE 0x40 */
48
49
50#include <linux/module.h>
51#include <linux/kernel.h>
52#include <linux/errno.h>
53#include <linux/pci.h>
54#include <linux/init.h>
55#include <linux/interrupt.h>
56#include <linux/ethtool.h>
57#include <linux/netdevice.h>
58#include <linux/etherdevice.h>
59
60#include <linux/io.h>
61#include <asm/irq.h>
62#include <linux/uaccess.h>
63
64#include "8390.h"
65
66static int ne2k_msg_enable;
67
68static const int default_msg_level = (NETIF_MSG_DRV | NETIF_MSG_PROBE |
69 NETIF_MSG_RX_ERR | NETIF_MSG_TX_ERR);
70
71#if defined(__powerpc__)
72#define inl_le(addr) le32_to_cpu(inl(addr))
73#define inw_le(addr) le16_to_cpu(inw(addr))
74#endif
75
76MODULE_AUTHOR(DRV_AUTHOR);
77MODULE_DESCRIPTION(DRV_DESCRIPTION);
78MODULE_VERSION(DRV_VERSION);
79MODULE_LICENSE("GPL");
80
81module_param_named(msg_enable, ne2k_msg_enable, int, 0444);
82module_param_array(options, int, NULL, 0);
83module_param_array(full_duplex, int, NULL, 0);
84MODULE_PARM_DESC(msg_enable, "Debug message level (see linux/netdevice.h for bitmap)");
85MODULE_PARM_DESC(options, "Bit 5: full duplex");
86MODULE_PARM_DESC(full_duplex, "full duplex setting(s) (1)");
87
88/* Some defines that people can play with if so inclined.
89 */
90
91/* Use 32 bit data-movement operations instead of 16 bit. */
92#define USE_LONGIO
93
94/* Do we implement the read before write bugfix ? */
95/* #define NE_RW_BUGFIX */
96
97/* Flags. We rename an existing ei_status field to store flags!
98 * Thus only the low 8 bits are usable for non-init-time flags.
99 */
100#define ne2k_flags reg0
101
102enum {
103 /* Chip can do only 16/32-bit xfers. */
104 ONLY_16BIT_IO = 8, ONLY_32BIT_IO = 4,
105 /* User override. */
106 FORCE_FDX = 0x20,
107 REALTEK_FDX = 0x40, HOLTEK_FDX = 0x80,
108 STOP_PG_0x60 = 0x100,
109};
110
111enum ne2k_pci_chipsets {
112 CH_RealTek_RTL_8029 = 0,
113 CH_Winbond_89C940,
114 CH_Compex_RL2000,
115 CH_KTI_ET32P2,
116 CH_NetVin_NV5000SC,
117 CH_Via_86C926,
118 CH_SureCom_NE34,
119 CH_Winbond_W89C940F,
120 CH_Holtek_HT80232,
121 CH_Holtek_HT80229,
122 CH_Winbond_89C940_8c4a,
123};
124
125
126static struct {
127 char *name;
128 int flags;
129} pci_clone_list[] = {
130 {"RealTek RTL-8029(AS)", REALTEK_FDX},
131 {"Winbond 89C940", 0},
132 {"Compex RL2000", 0},
133 {"KTI ET32P2", 0},
134 {"NetVin NV5000SC", 0},
135 {"Via 86C926", ONLY_16BIT_IO},
136 {"SureCom NE34", 0},
137 {"Winbond W89C940F", 0},
138 {"Holtek HT80232", ONLY_16BIT_IO | HOLTEK_FDX},
139 {"Holtek HT80229", ONLY_32BIT_IO | HOLTEK_FDX | STOP_PG_0x60 },
140 {"Winbond W89C940(misprogrammed)", 0},
141 {NULL,}
142};
143
144
145static const struct pci_device_id ne2k_pci_tbl[] = {
146 { 0x10ec, 0x8029, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_RealTek_RTL_8029 },
147 { 0x1050, 0x0940, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Winbond_89C940 },
148 { 0x11f6, 0x1401, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Compex_RL2000 },
149 { 0x8e2e, 0x3000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_KTI_ET32P2 },
150 { 0x4a14, 0x5000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_NetVin_NV5000SC },
151 { 0x1106, 0x0926, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Via_86C926 },
152 { 0x10bd, 0x0e34, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_SureCom_NE34 },
153 { 0x1050, 0x5a5a, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Winbond_W89C940F },
154 { 0x12c3, 0x0058, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Holtek_HT80232 },
155 { 0x12c3, 0x5598, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Holtek_HT80229 },
156 { 0x8c4a, 0x1980, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Winbond_89C940_8c4a },
157 { 0, }
158};
159
160MODULE_DEVICE_TABLE(pci, ne2k_pci_tbl);
161
162
163/* ---- No user-serviceable parts below ---- */
164
165#define NE_BASE (dev->base_addr)
166#define NE_CMD 0x00
167#define NE_DATAPORT 0x10 /* NatSemi-defined port window offset. */
168#define NE_RESET 0x1f /* Issue a read to reset, a write to clear. */
169#define NE_IO_EXTENT 0x20
170
171#define NESM_START_PG 0x40 /* First page of TX buffer */
172#define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */
173
174
175static int ne2k_pci_open(struct net_device *dev);
176static int ne2k_pci_close(struct net_device *dev);
177
178static void ne2k_pci_reset_8390(struct net_device *dev);
179static void ne2k_pci_get_8390_hdr(struct net_device *dev,
180 struct e8390_pkt_hdr *hdr, int ring_page);
181static void ne2k_pci_block_input(struct net_device *dev, int count,
182 struct sk_buff *skb, int ring_offset);
183static void ne2k_pci_block_output(struct net_device *dev, const int count,
184 const unsigned char *buf,
185 const int start_page);
186static const struct ethtool_ops ne2k_pci_ethtool_ops;
187
188
189
190/* There is no room in the standard 8390 structure for extra info we need,
191 * so we build a meta/outer-wrapper structure..
192 */
193struct ne2k_pci_card {
194 struct net_device *dev;
195 struct pci_dev *pci_dev;
196};
197
198
199
200/* NEx000-clone boards have a Station Address (SA) PROM (SAPROM) in the packet
201 * buffer memory space. By-the-spec NE2000 clones have 0x57,0x57 in bytes
202 * 0x0e,0x0f of the SAPROM, while other supposed NE2000 clones must be
203 * detected by their SA prefix.
204 *
205 * Reading the SAPROM from a word-wide card with the 8390 set in byte-wide
206 * mode results in doubled values, which can be detected and compensated for.
207 *
208 * The probe is also responsible for initializing the card and filling
209 * in the 'dev' and 'ei_status' structures.
210 */
211
212static const struct net_device_ops ne2k_netdev_ops = {
213 .ndo_open = ne2k_pci_open,
214 .ndo_stop = ne2k_pci_close,
215 .ndo_start_xmit = ei_start_xmit,
216 .ndo_tx_timeout = ei_tx_timeout,
217 .ndo_get_stats = ei_get_stats,
218 .ndo_set_rx_mode = ei_set_multicast_list,
219 .ndo_validate_addr = eth_validate_addr,
220 .ndo_set_mac_address = eth_mac_addr,
221#ifdef CONFIG_NET_POLL_CONTROLLER
222 .ndo_poll_controller = ei_poll,
223#endif
224};
225
226static int ne2k_pci_init_one(struct pci_dev *pdev,
227 const struct pci_device_id *ent)
228{
229 struct net_device *dev;
230 int i;
231 unsigned char SA_prom[32];
232 int start_page, stop_page;
233 int irq, reg0, chip_idx = ent->driver_data;
234 static unsigned int fnd_cnt;
235 long ioaddr;
236 int flags = pci_clone_list[chip_idx].flags;
237 struct ei_device *ei_local;
238
239 fnd_cnt++;
240
241 i = pci_enable_device(pdev);
242 if (i)
243 return i;
244
245 ioaddr = pci_resource_start(pdev, 0);
246 irq = pdev->irq;
247
248 if (!ioaddr || ((pci_resource_flags(pdev, 0) & IORESOURCE_IO) == 0)) {
249 dev_err(&pdev->dev, "no I/O resource at PCI BAR #0\n");
250 goto err_out;
251 }
252
253 if (!request_region(ioaddr, NE_IO_EXTENT, DRV_NAME)) {
254 dev_err(&pdev->dev, "I/O resource 0x%x @ 0x%lx busy\n",
255 NE_IO_EXTENT, ioaddr);
256 goto err_out;
257 }
258
259 reg0 = inb(ioaddr);
260 if (reg0 == 0xFF)
261 goto err_out_free_res;
262
263 /* Do a preliminary verification that we have a 8390. */
264 {
265 int regd;
266
267 outb(E8390_NODMA + E8390_PAGE1 + E8390_STOP, ioaddr + E8390_CMD);
268 regd = inb(ioaddr + 0x0d);
269 outb(0xff, ioaddr + 0x0d);
270 outb(E8390_NODMA + E8390_PAGE0, ioaddr + E8390_CMD);
271 /* Clear the counter by reading. */
272 inb(ioaddr + EN0_COUNTER0);
273 if (inb(ioaddr + EN0_COUNTER0) != 0) {
274 outb(reg0, ioaddr);
275 /* Restore the old values. */
276 outb(regd, ioaddr + 0x0d);
277 goto err_out_free_res;
278 }
279 }
280
281 /* Allocate net_device, dev->priv; fill in 8390 specific dev fields. */
282 dev = alloc_ei_netdev();
283 if (!dev) {
284 dev_err(&pdev->dev, "cannot allocate ethernet device\n");
285 goto err_out_free_res;
286 }
287 dev->netdev_ops = &ne2k_netdev_ops;
288 ei_local = netdev_priv(dev);
289 ei_local->msg_enable = netif_msg_init(ne2k_msg_enable, default_msg_level);
290
291 SET_NETDEV_DEV(dev, &pdev->dev);
292
293 /* Reset card. Who knows what dain-bramaged state it was left in. */
294 {
295 unsigned long reset_start_time = jiffies;
296
297 outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET);
298
299 /* This looks like a horrible timing loop, but it should never
300 * take more than a few cycles.
301 */
302 while ((inb(ioaddr + EN0_ISR) & ENISR_RESET) == 0)
303 /* Limit wait: '2' avoids jiffy roll-over. */
304 if (jiffies - reset_start_time > 2) {
305 dev_err(&pdev->dev,
306 "Card failure (no reset ack).\n");
307 goto err_out_free_netdev;
308 }
309 /* Ack all intr. */
310 outb(0xff, ioaddr + EN0_ISR);
311 }
312
313 /* Read the 16 bytes of station address PROM.
314 * We must first initialize registers, similar
315 * to NS8390_init(eifdev, 0).
316 * We can't reliably read the SAPROM address without this.
317 * (I learned the hard way!).
318 */
319 {
320 struct {unsigned char value, offset; } program_seq[] = {
321 /* Select page 0 */
322 {E8390_NODMA + E8390_PAGE0 + E8390_STOP, E8390_CMD},
323 /* Set word-wide access */
324 {0x49, EN0_DCFG},
325 /* Clear the count regs. */
326 {0x00, EN0_RCNTLO},
327 /* Mask completion IRQ */
328 {0x00, EN0_RCNTHI},
329 {0x00, EN0_IMR},
330 {0xFF, EN0_ISR},
331 /* 0x20 Set to monitor */
332 {E8390_RXOFF, EN0_RXCR},
333 /* 0x02 and loopback mode */
334 {E8390_TXOFF, EN0_TXCR},
335 {32, EN0_RCNTLO},
336 {0x00, EN0_RCNTHI},
337 /* DMA starting at 0x0000 */
338 {0x00, EN0_RSARLO},
339 {0x00, EN0_RSARHI},
340 {E8390_RREAD+E8390_START, E8390_CMD},
341 };
342 for (i = 0; i < ARRAY_SIZE(program_seq); i++)
343 outb(program_seq[i].value,
344 ioaddr + program_seq[i].offset);
345
346 }
347
348 /* Note: all PCI cards have at least 16 bit access, so we don't have
349 * to check for 8 bit cards. Most cards permit 32 bit access.
350 */
351 if (flags & ONLY_32BIT_IO) {
352 for (i = 0; i < 4 ; i++)
353 ((u32 *)SA_prom)[i] = le32_to_cpu(inl(ioaddr + NE_DATAPORT));
354 } else
355 for (i = 0; i < 32 /* sizeof(SA_prom )*/; i++)
356 SA_prom[i] = inb(ioaddr + NE_DATAPORT);
357
358 /* We always set the 8390 registers for word mode. */
359 outb(0x49, ioaddr + EN0_DCFG);
360 start_page = NESM_START_PG;
361
362 stop_page = flags & STOP_PG_0x60 ? 0x60 : NESM_STOP_PG;
363
364 /* Set up the rest of the parameters. */
365 dev->irq = irq;
366 dev->base_addr = ioaddr;
367 pci_set_drvdata(pdev, dev);
368
369 ei_status.name = pci_clone_list[chip_idx].name;
370 ei_status.tx_start_page = start_page;
371 ei_status.stop_page = stop_page;
372 ei_status.word16 = 1;
373 ei_status.ne2k_flags = flags;
374 if (fnd_cnt < MAX_UNITS) {
375 if (full_duplex[fnd_cnt] > 0 || (options[fnd_cnt] & FORCE_FDX))
376 ei_status.ne2k_flags |= FORCE_FDX;
377 }
378
379 ei_status.rx_start_page = start_page + TX_PAGES;
380#ifdef PACKETBUF_MEMSIZE
381 /* Allow the packet buffer size to be overridden by know-it-alls. */
382 ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
383#endif
384
385 ei_status.reset_8390 = &ne2k_pci_reset_8390;
386 ei_status.block_input = &ne2k_pci_block_input;
387 ei_status.block_output = &ne2k_pci_block_output;
388 ei_status.get_8390_hdr = &ne2k_pci_get_8390_hdr;
389 ei_status.priv = (unsigned long) pdev;
390
391 dev->ethtool_ops = &ne2k_pci_ethtool_ops;
392 NS8390_init(dev, 0);
393
394 eth_hw_addr_set(dev, SA_prom);
395
396 i = register_netdev(dev);
397 if (i)
398 goto err_out_free_netdev;
399
400 netdev_info(dev, "%s found at %#lx, IRQ %d, %pM.\n",
401 pci_clone_list[chip_idx].name, ioaddr, dev->irq,
402 dev->dev_addr);
403
404 return 0;
405
406err_out_free_netdev:
407 free_netdev(dev);
408err_out_free_res:
409 release_region(ioaddr, NE_IO_EXTENT);
410err_out:
411 pci_disable_device(pdev);
412 return -ENODEV;
413}
414
415/* Magic incantation sequence for full duplex on the supported cards.
416 */
417static inline int set_realtek_fdx(struct net_device *dev)
418{
419 long ioaddr = dev->base_addr;
420
421 outb(0xC0 + E8390_NODMA, ioaddr + NE_CMD); /* Page 3 */
422 outb(0xC0, ioaddr + 0x01); /* Enable writes to CONFIG3 */
423 outb(0x40, ioaddr + 0x06); /* Enable full duplex */
424 outb(0x00, ioaddr + 0x01); /* Disable writes to CONFIG3 */
425 outb(E8390_PAGE0 + E8390_NODMA, ioaddr + NE_CMD); /* Page 0 */
426 return 0;
427}
428
429static inline int set_holtek_fdx(struct net_device *dev)
430{
431 long ioaddr = dev->base_addr;
432
433 outb(inb(ioaddr + 0x20) | 0x80, ioaddr + 0x20);
434 return 0;
435}
436
437static int ne2k_pci_set_fdx(struct net_device *dev)
438{
439 if (ei_status.ne2k_flags & REALTEK_FDX)
440 return set_realtek_fdx(dev);
441 else if (ei_status.ne2k_flags & HOLTEK_FDX)
442 return set_holtek_fdx(dev);
443
444 return -EOPNOTSUPP;
445}
446
447static int ne2k_pci_open(struct net_device *dev)
448{
449 int ret = request_irq(dev->irq, ei_interrupt, IRQF_SHARED,
450 dev->name, dev);
451
452 if (ret)
453 return ret;
454
455 if (ei_status.ne2k_flags & FORCE_FDX)
456 ne2k_pci_set_fdx(dev);
457
458 ei_open(dev);
459 return 0;
460}
461
462static int ne2k_pci_close(struct net_device *dev)
463{
464 ei_close(dev);
465 free_irq(dev->irq, dev);
466 return 0;
467}
468
469/* Hard reset the card. This used to pause for the same period that a
470 * 8390 reset command required, but that shouldn't be necessary.
471 */
472static void ne2k_pci_reset_8390(struct net_device *dev)
473{
474 unsigned long reset_start_time = jiffies;
475 struct ei_device *ei_local = netdev_priv(dev);
476
477 netif_dbg(ei_local, hw, dev, "resetting the 8390 t=%ld...\n",
478 jiffies);
479
480 outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
481
482 ei_status.txing = 0;
483 ei_status.dmaing = 0;
484
485 /* This check _should_not_ be necessary, omit eventually. */
486 while ((inb(NE_BASE+EN0_ISR) & ENISR_RESET) == 0)
487 if (jiffies - reset_start_time > 2) {
488 netdev_err(dev, "%s did not complete.\n", __func__);
489 break;
490 }
491 /* Ack intr. */
492 outb(ENISR_RESET, NE_BASE + EN0_ISR);
493}
494
495/* Grab the 8390 specific header. Similar to the block_input routine, but
496 * we don't need to be concerned with ring wrap as the header will be at
497 * the start of a page, so we optimize accordingly.
498 */
499
500static void ne2k_pci_get_8390_hdr(struct net_device *dev,
501 struct e8390_pkt_hdr *hdr, int ring_page)
502{
503
504 long nic_base = dev->base_addr;
505
506 /* This *shouldn't* happen. If it does, it's the last thing you'll see
507 */
508 if (ei_status.dmaing) {
509 netdev_err(dev, "DMAing conflict in %s [DMAstat:%d][irqlock:%d].\n",
510 __func__, ei_status.dmaing, ei_status.irqlock);
511 return;
512 }
513
514 ei_status.dmaing |= 0x01;
515 outb(E8390_NODMA + E8390_PAGE0 + E8390_START, nic_base + NE_CMD);
516 outb(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
517 outb(0, nic_base + EN0_RCNTHI);
518 outb(0, nic_base + EN0_RSARLO); /* On page boundary */
519 outb(ring_page, nic_base + EN0_RSARHI);
520 outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
521
522 if (ei_status.ne2k_flags & ONLY_16BIT_IO) {
523 insw(NE_BASE + NE_DATAPORT, hdr,
524 sizeof(struct e8390_pkt_hdr) >> 1);
525 } else {
526 *(u32 *)hdr = le32_to_cpu(inl(NE_BASE + NE_DATAPORT));
527 le16_to_cpus(&hdr->count);
528 }
529 /* Ack intr. */
530 outb(ENISR_RDC, nic_base + EN0_ISR);
531 ei_status.dmaing &= ~0x01;
532}
533
534/* Block input and output, similar to the Crynwr packet driver. If you
535 *are porting to a new ethercard, look at the packet driver source for hints.
536 *The NEx000 doesn't share the on-board packet memory -- you have to put
537 *the packet out through the "remote DMA" dataport using outb.
538 */
539
540static void ne2k_pci_block_input(struct net_device *dev, int count,
541 struct sk_buff *skb, int ring_offset)
542{
543 long nic_base = dev->base_addr;
544 char *buf = skb->data;
545
546 /* This *shouldn't* happen.
547 * If it does, it's the last thing you'll see.
548 */
549 if (ei_status.dmaing) {
550 netdev_err(dev, "DMAing conflict in %s [DMAstat:%d][irqlock:%d]\n",
551 __func__, ei_status.dmaing, ei_status.irqlock);
552 return;
553 }
554 ei_status.dmaing |= 0x01;
555 if (ei_status.ne2k_flags & ONLY_32BIT_IO)
556 count = (count + 3) & 0xFFFC;
557 outb(E8390_NODMA + E8390_PAGE0 + E8390_START, nic_base + NE_CMD);
558 outb(count & 0xff, nic_base + EN0_RCNTLO);
559 outb(count >> 8, nic_base + EN0_RCNTHI);
560 outb(ring_offset & 0xff, nic_base + EN0_RSARLO);
561 outb(ring_offset >> 8, nic_base + EN0_RSARHI);
562 outb(E8390_RREAD + E8390_START, nic_base + NE_CMD);
563
564 if (ei_status.ne2k_flags & ONLY_16BIT_IO) {
565 insw(NE_BASE + NE_DATAPORT, buf, count >> 1);
566 if (count & 0x01)
567 buf[count-1] = inb(NE_BASE + NE_DATAPORT);
568 } else {
569 insl(NE_BASE + NE_DATAPORT, buf, count >> 2);
570 if (count & 3) {
571 buf += count & ~3;
572 if (count & 2) {
573 __le16 *b = (__le16 *)buf;
574
575 *b++ = cpu_to_le16(inw(NE_BASE + NE_DATAPORT));
576 buf = (char *)b;
577 }
578 if (count & 1)
579 *buf = inb(NE_BASE + NE_DATAPORT);
580 }
581 }
582 /* Ack intr. */
583 outb(ENISR_RDC, nic_base + EN0_ISR);
584 ei_status.dmaing &= ~0x01;
585}
586
587static void ne2k_pci_block_output(struct net_device *dev, int count,
588 const unsigned char *buf, const int start_page)
589{
590 long nic_base = NE_BASE;
591 unsigned long dma_start;
592
593 /* On little-endian it's always safe to round the count up for
594 * word writes.
595 */
596 if (ei_status.ne2k_flags & ONLY_32BIT_IO)
597 count = (count + 3) & 0xFFFC;
598 else
599 if (count & 0x01)
600 count++;
601
602 /* This *shouldn't* happen.
603 * If it does, it's the last thing you'll see.
604 */
605 if (ei_status.dmaing) {
606 netdev_err(dev, "DMAing conflict in %s [DMAstat:%d][irqlock:%d]\n",
607 __func__, ei_status.dmaing, ei_status.irqlock);
608 return;
609 }
610 ei_status.dmaing |= 0x01;
611 /* We should already be in page 0, but to be safe... */
612 outb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
613
614#ifdef NE_RW_BUGFIX
615 /* Handle the read-before-write bug the same way as the
616 * Crynwr packet driver -- the NatSemi method doesn't work.
617 * Actually this doesn't always work either, but if you have
618 * problems with your NEx000 this is better than nothing!
619 */
620 outb(0x42, nic_base + EN0_RCNTLO);
621 outb(0x00, nic_base + EN0_RCNTHI);
622 outb(0x42, nic_base + EN0_RSARLO);
623 outb(0x00, nic_base + EN0_RSARHI);
624 outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
625#endif
626 outb(ENISR_RDC, nic_base + EN0_ISR);
627
628 /* Now the normal output. */
629 outb(count & 0xff, nic_base + EN0_RCNTLO);
630 outb(count >> 8, nic_base + EN0_RCNTHI);
631 outb(0x00, nic_base + EN0_RSARLO);
632 outb(start_page, nic_base + EN0_RSARHI);
633 outb(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
634 if (ei_status.ne2k_flags & ONLY_16BIT_IO) {
635 outsw(NE_BASE + NE_DATAPORT, buf, count >> 1);
636 } else {
637 outsl(NE_BASE + NE_DATAPORT, buf, count >> 2);
638 if (count & 3) {
639 buf += count & ~3;
640 if (count & 2) {
641 __le16 *b = (__le16 *)buf;
642
643 outw(le16_to_cpu(*b++), NE_BASE + NE_DATAPORT);
644 buf = (char *)b;
645 }
646 }
647 }
648
649 dma_start = jiffies;
650
651 while ((inb(nic_base + EN0_ISR) & ENISR_RDC) == 0)
652 /* Avoid clock roll-over. */
653 if (jiffies - dma_start > 2) {
654 netdev_warn(dev, "timeout waiting for Tx RDC.\n");
655 ne2k_pci_reset_8390(dev);
656 NS8390_init(dev, 1);
657 break;
658 }
659 /* Ack intr. */
660 outb(ENISR_RDC, nic_base + EN0_ISR);
661 ei_status.dmaing &= ~0x01;
662}
663
664static void ne2k_pci_get_drvinfo(struct net_device *dev,
665 struct ethtool_drvinfo *info)
666{
667 struct ei_device *ei = netdev_priv(dev);
668 struct pci_dev *pci_dev = (struct pci_dev *) ei->priv;
669
670 strscpy(info->driver, DRV_NAME, sizeof(info->driver));
671 strscpy(info->version, DRV_VERSION, sizeof(info->version));
672 strscpy(info->bus_info, pci_name(pci_dev), sizeof(info->bus_info));
673}
674
675static u32 ne2k_pci_get_msglevel(struct net_device *dev)
676{
677 struct ei_device *ei_local = netdev_priv(dev);
678
679 return ei_local->msg_enable;
680}
681
682static void ne2k_pci_set_msglevel(struct net_device *dev, u32 v)
683{
684 struct ei_device *ei_local = netdev_priv(dev);
685
686 ei_local->msg_enable = v;
687}
688
689static const struct ethtool_ops ne2k_pci_ethtool_ops = {
690 .get_drvinfo = ne2k_pci_get_drvinfo,
691 .get_msglevel = ne2k_pci_get_msglevel,
692 .set_msglevel = ne2k_pci_set_msglevel,
693};
694
695static void ne2k_pci_remove_one(struct pci_dev *pdev)
696{
697 struct net_device *dev = pci_get_drvdata(pdev);
698
699 BUG_ON(!dev);
700 unregister_netdev(dev);
701 release_region(dev->base_addr, NE_IO_EXTENT);
702 free_netdev(dev);
703 pci_disable_device(pdev);
704}
705
706static int __maybe_unused ne2k_pci_suspend(struct device *dev_d)
707{
708 struct net_device *dev = dev_get_drvdata(dev_d);
709
710 netif_device_detach(dev);
711
712 return 0;
713}
714
715static int __maybe_unused ne2k_pci_resume(struct device *dev_d)
716{
717 struct net_device *dev = dev_get_drvdata(dev_d);
718
719 NS8390_init(dev, 1);
720 netif_device_attach(dev);
721
722 return 0;
723}
724
725static SIMPLE_DEV_PM_OPS(ne2k_pci_pm_ops, ne2k_pci_suspend, ne2k_pci_resume);
726
727static struct pci_driver ne2k_driver = {
728 .name = DRV_NAME,
729 .probe = ne2k_pci_init_one,
730 .remove = ne2k_pci_remove_one,
731 .id_table = ne2k_pci_tbl,
732 .driver.pm = &ne2k_pci_pm_ops,
733};
734module_pci_driver(ne2k_driver);
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 <asm/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, (S_IRUSR|S_IRGRP|S_IROTH));
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 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 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 struct ei_device *ei_local;
230
231/* when built into the kernel, we only print version if device is found */
232#ifndef MODULE
233 static int printed_version;
234 if (!printed_version++)
235 printk(version);
236#endif
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 return -ENODEV;
250 }
251
252 if (request_region (ioaddr, NE_IO_EXTENT, DRV_NAME) == NULL) {
253 dev_err(&pdev->dev, "I/O resource 0x%x @ 0x%lx busy\n",
254 NE_IO_EXTENT, ioaddr);
255 return -EBUSY;
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 outb(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD);
266 regd = inb(ioaddr + 0x0d);
267 outb(0xff, ioaddr + 0x0d);
268 outb(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD);
269 inb(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */
270 if (inb(ioaddr + EN0_COUNTER0) != 0) {
271 outb(reg0, ioaddr);
272 outb(regd, ioaddr + 0x0d); /* Restore the old values. */
273 goto err_out_free_res;
274 }
275 }
276
277 /* Allocate net_device, dev->priv; fill in 8390 specific dev fields. */
278 dev = alloc_ei_netdev();
279 if (!dev) {
280 dev_err(&pdev->dev, "cannot allocate ethernet device\n");
281 goto err_out_free_res;
282 }
283 dev->netdev_ops = &ne2k_netdev_ops;
284 ei_local = netdev_priv(dev);
285 ei_local->msg_enable = ne2k_msg_enable;
286
287 SET_NETDEV_DEV(dev, &pdev->dev);
288
289 /* Reset card. Who knows what dain-bramaged state it was left in. */
290 {
291 unsigned long reset_start_time = jiffies;
292
293 outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET);
294
295 /* This looks like a horrible timing loop, but it should never take
296 more than a few cycles.
297 */
298 while ((inb(ioaddr + EN0_ISR) & ENISR_RESET) == 0)
299 /* Limit wait: '2' avoids jiffy roll-over. */
300 if (jiffies - reset_start_time > 2) {
301 dev_err(&pdev->dev,
302 "Card failure (no reset ack).\n");
303 goto err_out_free_netdev;
304 }
305
306 outb(0xff, ioaddr + EN0_ISR); /* Ack all intr. */
307 }
308
309 /* Read the 16 bytes of station address PROM.
310 We must first initialize registers, similar to NS8390_init(eifdev, 0).
311 We can't reliably read the SAPROM address without this.
312 (I learned the hard way!). */
313 {
314 struct {unsigned char value, offset; } program_seq[] = {
315 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
316 {0x49, EN0_DCFG}, /* Set word-wide access. */
317 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
318 {0x00, EN0_RCNTHI},
319 {0x00, EN0_IMR}, /* Mask completion irq. */
320 {0xFF, EN0_ISR},
321 {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */
322 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
323 {32, EN0_RCNTLO},
324 {0x00, EN0_RCNTHI},
325 {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */
326 {0x00, EN0_RSARHI},
327 {E8390_RREAD+E8390_START, E8390_CMD},
328 };
329 for (i = 0; i < ARRAY_SIZE(program_seq); i++)
330 outb(program_seq[i].value, ioaddr + program_seq[i].offset);
331
332 }
333
334 /* Note: all PCI cards have at least 16 bit access, so we don't have
335 to check for 8 bit cards. Most cards permit 32 bit access. */
336 if (flags & ONLY_32BIT_IO) {
337 for (i = 0; i < 4 ; i++)
338 ((u32 *)SA_prom)[i] = le32_to_cpu(inl(ioaddr + NE_DATAPORT));
339 } else
340 for(i = 0; i < 32 /*sizeof(SA_prom)*/; i++)
341 SA_prom[i] = inb(ioaddr + NE_DATAPORT);
342
343 /* We always set the 8390 registers for word mode. */
344 outb(0x49, ioaddr + EN0_DCFG);
345 start_page = NESM_START_PG;
346
347 stop_page = flags & STOP_PG_0x60 ? 0x60 : NESM_STOP_PG;
348
349 /* Set up the rest of the parameters. */
350 dev->irq = irq;
351 dev->base_addr = ioaddr;
352 pci_set_drvdata(pdev, dev);
353
354 ei_status.name = pci_clone_list[chip_idx].name;
355 ei_status.tx_start_page = start_page;
356 ei_status.stop_page = stop_page;
357 ei_status.word16 = 1;
358 ei_status.ne2k_flags = flags;
359 if (fnd_cnt < MAX_UNITS) {
360 if (full_duplex[fnd_cnt] > 0 || (options[fnd_cnt] & FORCE_FDX))
361 ei_status.ne2k_flags |= FORCE_FDX;
362 }
363
364 ei_status.rx_start_page = start_page + TX_PAGES;
365#ifdef PACKETBUF_MEMSIZE
366 /* Allow the packet buffer size to be overridden by know-it-alls. */
367 ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
368#endif
369
370 ei_status.reset_8390 = &ne2k_pci_reset_8390;
371 ei_status.block_input = &ne2k_pci_block_input;
372 ei_status.block_output = &ne2k_pci_block_output;
373 ei_status.get_8390_hdr = &ne2k_pci_get_8390_hdr;
374 ei_status.priv = (unsigned long) pdev;
375
376 dev->ethtool_ops = &ne2k_pci_ethtool_ops;
377 NS8390_init(dev, 0);
378
379 memcpy(dev->dev_addr, SA_prom, dev->addr_len);
380
381 i = register_netdev(dev);
382 if (i)
383 goto err_out_free_netdev;
384
385 netdev_info(dev, "%s found at %#lx, IRQ %d, %pM.\n",
386 pci_clone_list[chip_idx].name, ioaddr, dev->irq,
387 dev->dev_addr);
388
389 return 0;
390
391err_out_free_netdev:
392 free_netdev (dev);
393err_out_free_res:
394 release_region (ioaddr, NE_IO_EXTENT);
395 return -ENODEV;
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 struct ei_device *ei_local = netdev_priv(dev);
457
458 netif_dbg(ei_local, hw, dev, "resetting the 8390 t=%ld...\n",
459 jiffies);
460
461 outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
462
463 ei_status.txing = 0;
464 ei_status.dmaing = 0;
465
466 /* This check _should_not_ be necessary, omit eventually. */
467 while ((inb(NE_BASE+EN0_ISR) & ENISR_RESET) == 0)
468 if (jiffies - reset_start_time > 2) {
469 netdev_err(dev, "ne2k_pci_reset_8390() did not complete.\n");
470 break;
471 }
472 outb(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */
473}
474
475/* Grab the 8390 specific header. Similar to the block_input routine, but
476 we don't need to be concerned with ring wrap as the header will be at
477 the start of a page, so we optimize accordingly. */
478
479static void ne2k_pci_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
480{
481
482 long nic_base = dev->base_addr;
483
484 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
485 if (ei_status.dmaing) {
486 netdev_err(dev, "DMAing conflict in ne2k_pci_get_8390_hdr "
487 "[DMAstat:%d][irqlock:%d].\n",
488 ei_status.dmaing, ei_status.irqlock);
489 return;
490 }
491
492 ei_status.dmaing |= 0x01;
493 outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
494 outb(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
495 outb(0, nic_base + EN0_RCNTHI);
496 outb(0, nic_base + EN0_RSARLO); /* On page boundary */
497 outb(ring_page, nic_base + EN0_RSARHI);
498 outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
499
500 if (ei_status.ne2k_flags & ONLY_16BIT_IO) {
501 insw(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1);
502 } else {
503 *(u32*)hdr = le32_to_cpu(inl(NE_BASE + NE_DATAPORT));
504 le16_to_cpus(&hdr->count);
505 }
506
507 outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
508 ei_status.dmaing &= ~0x01;
509}
510
511/* Block input and output, similar to the Crynwr packet driver. If you
512 are porting to a new ethercard, look at the packet driver source for hints.
513 The NEx000 doesn't share the on-board packet memory -- you have to put
514 the packet out through the "remote DMA" dataport using outb. */
515
516static void ne2k_pci_block_input(struct net_device *dev, int count,
517 struct sk_buff *skb, int ring_offset)
518{
519 long nic_base = dev->base_addr;
520 char *buf = skb->data;
521
522 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
523 if (ei_status.dmaing) {
524 netdev_err(dev, "DMAing conflict in ne2k_pci_block_input "
525 "[DMAstat:%d][irqlock:%d].\n",
526 ei_status.dmaing, ei_status.irqlock);
527 return;
528 }
529 ei_status.dmaing |= 0x01;
530 if (ei_status.ne2k_flags & ONLY_32BIT_IO)
531 count = (count + 3) & 0xFFFC;
532 outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
533 outb(count & 0xff, nic_base + EN0_RCNTLO);
534 outb(count >> 8, nic_base + EN0_RCNTHI);
535 outb(ring_offset & 0xff, nic_base + EN0_RSARLO);
536 outb(ring_offset >> 8, nic_base + EN0_RSARHI);
537 outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
538
539 if (ei_status.ne2k_flags & ONLY_16BIT_IO) {
540 insw(NE_BASE + NE_DATAPORT,buf,count>>1);
541 if (count & 0x01) {
542 buf[count-1] = inb(NE_BASE + NE_DATAPORT);
543 }
544 } else {
545 insl(NE_BASE + NE_DATAPORT, buf, count>>2);
546 if (count & 3) {
547 buf += count & ~3;
548 if (count & 2) {
549 __le16 *b = (__le16 *)buf;
550
551 *b++ = cpu_to_le16(inw(NE_BASE + NE_DATAPORT));
552 buf = (char *)b;
553 }
554 if (count & 1)
555 *buf = inb(NE_BASE + NE_DATAPORT);
556 }
557 }
558
559 outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
560 ei_status.dmaing &= ~0x01;
561}
562
563static void ne2k_pci_block_output(struct net_device *dev, int count,
564 const unsigned char *buf, const int start_page)
565{
566 long nic_base = NE_BASE;
567 unsigned long dma_start;
568
569 /* On little-endian it's always safe to round the count up for
570 word writes. */
571 if (ei_status.ne2k_flags & ONLY_32BIT_IO)
572 count = (count + 3) & 0xFFFC;
573 else
574 if (count & 0x01)
575 count++;
576
577 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
578 if (ei_status.dmaing) {
579 netdev_err(dev, "DMAing conflict in ne2k_pci_block_output."
580 "[DMAstat:%d][irqlock:%d]\n",
581 ei_status.dmaing, ei_status.irqlock);
582 return;
583 }
584 ei_status.dmaing |= 0x01;
585 /* We should already be in page 0, but to be safe... */
586 outb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
587
588#ifdef NE8390_RW_BUGFIX
589 /* Handle the read-before-write bug the same way as the
590 Crynwr packet driver -- the NatSemi method doesn't work.
591 Actually this doesn't always work either, but if you have
592 problems with your NEx000 this is better than nothing! */
593 outb(0x42, nic_base + EN0_RCNTLO);
594 outb(0x00, nic_base + EN0_RCNTHI);
595 outb(0x42, nic_base + EN0_RSARLO);
596 outb(0x00, nic_base + EN0_RSARHI);
597 outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
598#endif
599 outb(ENISR_RDC, nic_base + EN0_ISR);
600
601 /* Now the normal output. */
602 outb(count & 0xff, nic_base + EN0_RCNTLO);
603 outb(count >> 8, nic_base + EN0_RCNTHI);
604 outb(0x00, nic_base + EN0_RSARLO);
605 outb(start_page, nic_base + EN0_RSARHI);
606 outb(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
607 if (ei_status.ne2k_flags & ONLY_16BIT_IO) {
608 outsw(NE_BASE + NE_DATAPORT, buf, count>>1);
609 } else {
610 outsl(NE_BASE + NE_DATAPORT, buf, count>>2);
611 if (count & 3) {
612 buf += count & ~3;
613 if (count & 2) {
614 __le16 *b = (__le16 *)buf;
615
616 outw(le16_to_cpu(*b++), NE_BASE + NE_DATAPORT);
617 buf = (char *)b;
618 }
619 }
620 }
621
622 dma_start = jiffies;
623
624 while ((inb(nic_base + EN0_ISR) & ENISR_RDC) == 0)
625 if (jiffies - dma_start > 2) { /* Avoid clock roll-over. */
626 netdev_warn(dev, "timeout waiting for Tx RDC.\n");
627 ne2k_pci_reset_8390(dev);
628 NS8390_init(dev,1);
629 break;
630 }
631
632 outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
633 ei_status.dmaing &= ~0x01;
634}
635
636static void ne2k_pci_get_drvinfo(struct net_device *dev,
637 struct ethtool_drvinfo *info)
638{
639 struct ei_device *ei = netdev_priv(dev);
640 struct pci_dev *pci_dev = (struct pci_dev *) ei->priv;
641
642 strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
643 strlcpy(info->version, DRV_VERSION, sizeof(info->version));
644 strlcpy(info->bus_info, pci_name(pci_dev), sizeof(info->bus_info));
645}
646
647static u32 ne2k_pci_get_msglevel(struct net_device *dev)
648{
649 struct ei_device *ei_local = netdev_priv(dev);
650
651 return ei_local->msg_enable;
652}
653
654static void ne2k_pci_set_msglevel(struct net_device *dev, u32 v)
655{
656 struct ei_device *ei_local = netdev_priv(dev);
657
658 ei_local->msg_enable = v;
659}
660
661static const struct ethtool_ops ne2k_pci_ethtool_ops = {
662 .get_drvinfo = ne2k_pci_get_drvinfo,
663 .get_msglevel = ne2k_pci_get_msglevel,
664 .set_msglevel = ne2k_pci_set_msglevel,
665};
666
667static void ne2k_pci_remove_one(struct pci_dev *pdev)
668{
669 struct net_device *dev = pci_get_drvdata(pdev);
670
671 BUG_ON(!dev);
672 unregister_netdev(dev);
673 release_region(dev->base_addr, NE_IO_EXTENT);
674 free_netdev(dev);
675 pci_disable_device(pdev);
676}
677
678#ifdef CONFIG_PM
679static int ne2k_pci_suspend (struct pci_dev *pdev, pm_message_t state)
680{
681 struct net_device *dev = pci_get_drvdata (pdev);
682
683 netif_device_detach(dev);
684 pci_save_state(pdev);
685 pci_disable_device(pdev);
686 pci_set_power_state(pdev, pci_choose_state(pdev, state));
687
688 return 0;
689}
690
691static int ne2k_pci_resume (struct pci_dev *pdev)
692{
693 struct net_device *dev = pci_get_drvdata (pdev);
694 int rc;
695
696 pci_set_power_state(pdev, PCI_D0);
697 pci_restore_state(pdev);
698
699 rc = pci_enable_device(pdev);
700 if (rc)
701 return rc;
702
703 NS8390_init(dev, 1);
704 netif_device_attach(dev);
705
706 return 0;
707}
708
709#endif /* CONFIG_PM */
710
711
712static struct pci_driver ne2k_driver = {
713 .name = DRV_NAME,
714 .probe = ne2k_pci_init_one,
715 .remove = ne2k_pci_remove_one,
716 .id_table = ne2k_pci_tbl,
717#ifdef CONFIG_PM
718 .suspend = ne2k_pci_suspend,
719 .resume = ne2k_pci_resume,
720#endif /* CONFIG_PM */
721
722};
723
724
725static int __init ne2k_pci_init(void)
726{
727/* when a module, this is printed whether or not devices are found in probe */
728#ifdef MODULE
729 printk(version);
730#endif
731 return pci_register_driver(&ne2k_driver);
732}
733
734
735static void __exit ne2k_pci_cleanup(void)
736{
737 pci_unregister_driver (&ne2k_driver);
738}
739
740module_init(ne2k_pci_init);
741module_exit(ne2k_pci_cleanup);