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