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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
[deliverable/linux.git] / drivers / net / ethernet / 8390 / ne2k-pci.c
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. */
38 static int full_duplex[MAX_UNITS];
39 static 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
61 static u32 ne2k_msg_enable;
62
63 /* These identify the driver base version and may not be removed. */
64 static 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
75 MODULE_AUTHOR("Donald Becker / Paul Gortmaker");
76 MODULE_DESCRIPTION("PCI NE2000 clone driver");
77 MODULE_LICENSE("GPL");
78
79 module_param_named(msg_enable, ne2k_msg_enable, uint, (S_IRUSR|S_IRGRP|S_IROTH));
80 module_param_array(options, int, NULL, 0);
81 module_param_array(full_duplex, int, NULL, 0);
82 MODULE_PARM_DESC(msg_enable, "Debug message level (see linux/netdevice.h for bitmap)");
83 MODULE_PARM_DESC(options, "Bit 5: full duplex");
84 MODULE_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
97 enum {
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
104 enum 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
119 static 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
138 static const struct pci_device_id ne2k_pci_tbl[] = {
139 { 0x10ec, 0x8029, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_RealTek_RTL_8029 },
140 { 0x1050, 0x0940, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Winbond_89C940 },
141 { 0x11f6, 0x1401, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Compex_RL2000 },
142 { 0x8e2e, 0x3000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_KTI_ET32P2 },
143 { 0x4a14, 0x5000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_NetVin_NV5000SC },
144 { 0x1106, 0x0926, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Via_86C926 },
145 { 0x10bd, 0x0e34, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_SureCom_NE34 },
146 { 0x1050, 0x5a5a, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Winbond_W89C940F },
147 { 0x12c3, 0x0058, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Holtek_HT80232 },
148 { 0x12c3, 0x5598, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Holtek_HT80229 },
149 { 0x8c4a, 0x1980, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Winbond_89C940_8c4a },
150 { 0, }
151 };
152 MODULE_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
167 static int ne2k_pci_open(struct net_device *dev);
168 static int ne2k_pci_close(struct net_device *dev);
169
170 static void ne2k_pci_reset_8390(struct net_device *dev);
171 static void ne2k_pci_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
172 int ring_page);
173 static void ne2k_pci_block_input(struct net_device *dev, int count,
174 struct sk_buff *skb, int ring_offset);
175 static void ne2k_pci_block_output(struct net_device *dev, const int count,
176 const unsigned char *buf, const int start_page);
177 static 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.. */
183 struct ne2k_pci_card {
184 struct net_device *dev;
185 struct pci_dev *pci_dev;
186 };
187
188
189
190 /*
191 NEx000-clone boards have a Station Address (SA) PROM (SAPROM) in the packet
192 buffer memory space. By-the-spec NE2000 clones have 0x57,0x57 in bytes
193 0x0e,0x0f of the SAPROM, while other supposed NE2000 clones must be
194 detected by their SA prefix.
195
196 Reading the SAPROM from a word-wide card with the 8390 set in byte-wide
197 mode results in doubled values, which can be detected and compensated for.
198
199 The probe is also responsible for initializing the card and filling
200 in the 'dev' and 'ei_status' structures.
201 */
202
203 static 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
218 static 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 goto err_out;
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 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 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
391 err_out_free_netdev:
392 free_netdev (dev);
393 err_out_free_res:
394 release_region (ioaddr, NE_IO_EXTENT);
395 err_out:
396 pci_disable_device(pdev);
397 return -ENODEV;
398 }
399
400 /*
401 * Magic incantation sequence for full duplex on the supported cards.
402 */
403 static inline int set_realtek_fdx(struct net_device *dev)
404 {
405 long ioaddr = dev->base_addr;
406
407 outb(0xC0 + E8390_NODMA, ioaddr + NE_CMD); /* Page 3 */
408 outb(0xC0, ioaddr + 0x01); /* Enable writes to CONFIG3 */
409 outb(0x40, ioaddr + 0x06); /* Enable full duplex */
410 outb(0x00, ioaddr + 0x01); /* Disable writes to CONFIG3 */
411 outb(E8390_PAGE0 + E8390_NODMA, ioaddr + NE_CMD); /* Page 0 */
412 return 0;
413 }
414
415 static inline int set_holtek_fdx(struct net_device *dev)
416 {
417 long ioaddr = dev->base_addr;
418
419 outb(inb(ioaddr + 0x20) | 0x80, ioaddr + 0x20);
420 return 0;
421 }
422
423 static int ne2k_pci_set_fdx(struct net_device *dev)
424 {
425 if (ei_status.ne2k_flags & REALTEK_FDX)
426 return set_realtek_fdx(dev);
427 else if (ei_status.ne2k_flags & HOLTEK_FDX)
428 return set_holtek_fdx(dev);
429
430 return -EOPNOTSUPP;
431 }
432
433 static int ne2k_pci_open(struct net_device *dev)
434 {
435 int ret = request_irq(dev->irq, ei_interrupt, IRQF_SHARED, dev->name, dev);
436 if (ret)
437 return ret;
438
439 if (ei_status.ne2k_flags & FORCE_FDX)
440 ne2k_pci_set_fdx(dev);
441
442 ei_open(dev);
443 return 0;
444 }
445
446 static int ne2k_pci_close(struct net_device *dev)
447 {
448 ei_close(dev);
449 free_irq(dev->irq, dev);
450 return 0;
451 }
452
453 /* Hard reset the card. This used to pause for the same period that a
454 8390 reset command required, but that shouldn't be necessary. */
455 static void ne2k_pci_reset_8390(struct net_device *dev)
456 {
457 unsigned long reset_start_time = jiffies;
458 struct ei_device *ei_local = netdev_priv(dev);
459
460 netif_dbg(ei_local, hw, dev, "resetting the 8390 t=%ld...\n",
461 jiffies);
462
463 outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
464
465 ei_status.txing = 0;
466 ei_status.dmaing = 0;
467
468 /* This check _should_not_ be necessary, omit eventually. */
469 while ((inb(NE_BASE+EN0_ISR) & ENISR_RESET) == 0)
470 if (jiffies - reset_start_time > 2) {
471 netdev_err(dev, "ne2k_pci_reset_8390() did not complete.\n");
472 break;
473 }
474 outb(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */
475 }
476
477 /* Grab the 8390 specific header. Similar to the block_input routine, but
478 we don't need to be concerned with ring wrap as the header will be at
479 the start of a page, so we optimize accordingly. */
480
481 static void ne2k_pci_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
482 {
483
484 long nic_base = dev->base_addr;
485
486 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
487 if (ei_status.dmaing) {
488 netdev_err(dev, "DMAing conflict in ne2k_pci_get_8390_hdr "
489 "[DMAstat:%d][irqlock:%d].\n",
490 ei_status.dmaing, ei_status.irqlock);
491 return;
492 }
493
494 ei_status.dmaing |= 0x01;
495 outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
496 outb(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
497 outb(0, nic_base + EN0_RCNTHI);
498 outb(0, nic_base + EN0_RSARLO); /* On page boundary */
499 outb(ring_page, nic_base + EN0_RSARHI);
500 outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
501
502 if (ei_status.ne2k_flags & ONLY_16BIT_IO) {
503 insw(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1);
504 } else {
505 *(u32*)hdr = le32_to_cpu(inl(NE_BASE + NE_DATAPORT));
506 le16_to_cpus(&hdr->count);
507 }
508
509 outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
510 ei_status.dmaing &= ~0x01;
511 }
512
513 /* Block input and output, similar to the Crynwr packet driver. If you
514 are porting to a new ethercard, look at the packet driver source for hints.
515 The NEx000 doesn't share the on-board packet memory -- you have to put
516 the packet out through the "remote DMA" dataport using outb. */
517
518 static void ne2k_pci_block_input(struct net_device *dev, int count,
519 struct sk_buff *skb, int ring_offset)
520 {
521 long nic_base = dev->base_addr;
522 char *buf = skb->data;
523
524 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
525 if (ei_status.dmaing) {
526 netdev_err(dev, "DMAing conflict in ne2k_pci_block_input "
527 "[DMAstat:%d][irqlock:%d].\n",
528 ei_status.dmaing, ei_status.irqlock);
529 return;
530 }
531 ei_status.dmaing |= 0x01;
532 if (ei_status.ne2k_flags & ONLY_32BIT_IO)
533 count = (count + 3) & 0xFFFC;
534 outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
535 outb(count & 0xff, nic_base + EN0_RCNTLO);
536 outb(count >> 8, nic_base + EN0_RCNTHI);
537 outb(ring_offset & 0xff, nic_base + EN0_RSARLO);
538 outb(ring_offset >> 8, nic_base + EN0_RSARHI);
539 outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
540
541 if (ei_status.ne2k_flags & ONLY_16BIT_IO) {
542 insw(NE_BASE + NE_DATAPORT,buf,count>>1);
543 if (count & 0x01) {
544 buf[count-1] = inb(NE_BASE + NE_DATAPORT);
545 }
546 } else {
547 insl(NE_BASE + NE_DATAPORT, buf, count>>2);
548 if (count & 3) {
549 buf += count & ~3;
550 if (count & 2) {
551 __le16 *b = (__le16 *)buf;
552
553 *b++ = cpu_to_le16(inw(NE_BASE + NE_DATAPORT));
554 buf = (char *)b;
555 }
556 if (count & 1)
557 *buf = inb(NE_BASE + NE_DATAPORT);
558 }
559 }
560
561 outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
562 ei_status.dmaing &= ~0x01;
563 }
564
565 static void ne2k_pci_block_output(struct net_device *dev, int count,
566 const unsigned char *buf, const int start_page)
567 {
568 long nic_base = NE_BASE;
569 unsigned long dma_start;
570
571 /* On little-endian it's always safe to round the count up for
572 word writes. */
573 if (ei_status.ne2k_flags & ONLY_32BIT_IO)
574 count = (count + 3) & 0xFFFC;
575 else
576 if (count & 0x01)
577 count++;
578
579 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
580 if (ei_status.dmaing) {
581 netdev_err(dev, "DMAing conflict in ne2k_pci_block_output."
582 "[DMAstat:%d][irqlock:%d]\n",
583 ei_status.dmaing, ei_status.irqlock);
584 return;
585 }
586 ei_status.dmaing |= 0x01;
587 /* We should already be in page 0, but to be safe... */
588 outb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
589
590 #ifdef NE8390_RW_BUGFIX
591 /* Handle the read-before-write bug the same way as the
592 Crynwr packet driver -- the NatSemi method doesn't work.
593 Actually this doesn't always work either, but if you have
594 problems with your NEx000 this is better than nothing! */
595 outb(0x42, nic_base + EN0_RCNTLO);
596 outb(0x00, nic_base + EN0_RCNTHI);
597 outb(0x42, nic_base + EN0_RSARLO);
598 outb(0x00, nic_base + EN0_RSARHI);
599 outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
600 #endif
601 outb(ENISR_RDC, nic_base + EN0_ISR);
602
603 /* Now the normal output. */
604 outb(count & 0xff, nic_base + EN0_RCNTLO);
605 outb(count >> 8, nic_base + EN0_RCNTHI);
606 outb(0x00, nic_base + EN0_RSARLO);
607 outb(start_page, nic_base + EN0_RSARHI);
608 outb(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
609 if (ei_status.ne2k_flags & ONLY_16BIT_IO) {
610 outsw(NE_BASE + NE_DATAPORT, buf, count>>1);
611 } else {
612 outsl(NE_BASE + NE_DATAPORT, buf, count>>2);
613 if (count & 3) {
614 buf += count & ~3;
615 if (count & 2) {
616 __le16 *b = (__le16 *)buf;
617
618 outw(le16_to_cpu(*b++), NE_BASE + NE_DATAPORT);
619 buf = (char *)b;
620 }
621 }
622 }
623
624 dma_start = jiffies;
625
626 while ((inb(nic_base + EN0_ISR) & ENISR_RDC) == 0)
627 if (jiffies - dma_start > 2) { /* Avoid clock roll-over. */
628 netdev_warn(dev, "timeout waiting for Tx RDC.\n");
629 ne2k_pci_reset_8390(dev);
630 NS8390_init(dev,1);
631 break;
632 }
633
634 outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
635 ei_status.dmaing &= ~0x01;
636 }
637
638 static void ne2k_pci_get_drvinfo(struct net_device *dev,
639 struct ethtool_drvinfo *info)
640 {
641 struct ei_device *ei = netdev_priv(dev);
642 struct pci_dev *pci_dev = (struct pci_dev *) ei->priv;
643
644 strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
645 strlcpy(info->version, DRV_VERSION, sizeof(info->version));
646 strlcpy(info->bus_info, pci_name(pci_dev), sizeof(info->bus_info));
647 }
648
649 static u32 ne2k_pci_get_msglevel(struct net_device *dev)
650 {
651 struct ei_device *ei_local = netdev_priv(dev);
652
653 return ei_local->msg_enable;
654 }
655
656 static void ne2k_pci_set_msglevel(struct net_device *dev, u32 v)
657 {
658 struct ei_device *ei_local = netdev_priv(dev);
659
660 ei_local->msg_enable = v;
661 }
662
663 static const struct ethtool_ops ne2k_pci_ethtool_ops = {
664 .get_drvinfo = ne2k_pci_get_drvinfo,
665 .get_msglevel = ne2k_pci_get_msglevel,
666 .set_msglevel = ne2k_pci_set_msglevel,
667 };
668
669 static void ne2k_pci_remove_one(struct pci_dev *pdev)
670 {
671 struct net_device *dev = pci_get_drvdata(pdev);
672
673 BUG_ON(!dev);
674 unregister_netdev(dev);
675 release_region(dev->base_addr, NE_IO_EXTENT);
676 free_netdev(dev);
677 pci_disable_device(pdev);
678 }
679
680 #ifdef CONFIG_PM
681 static int ne2k_pci_suspend (struct pci_dev *pdev, pm_message_t state)
682 {
683 struct net_device *dev = pci_get_drvdata (pdev);
684
685 netif_device_detach(dev);
686 pci_save_state(pdev);
687 pci_disable_device(pdev);
688 pci_set_power_state(pdev, pci_choose_state(pdev, state));
689
690 return 0;
691 }
692
693 static int ne2k_pci_resume (struct pci_dev *pdev)
694 {
695 struct net_device *dev = pci_get_drvdata (pdev);
696 int rc;
697
698 pci_set_power_state(pdev, PCI_D0);
699 pci_restore_state(pdev);
700
701 rc = pci_enable_device(pdev);
702 if (rc)
703 return rc;
704
705 NS8390_init(dev, 1);
706 netif_device_attach(dev);
707
708 return 0;
709 }
710
711 #endif /* CONFIG_PM */
712
713
714 static struct pci_driver ne2k_driver = {
715 .name = DRV_NAME,
716 .probe = ne2k_pci_init_one,
717 .remove = ne2k_pci_remove_one,
718 .id_table = ne2k_pci_tbl,
719 #ifdef CONFIG_PM
720 .suspend = ne2k_pci_suspend,
721 .resume = ne2k_pci_resume,
722 #endif /* CONFIG_PM */
723
724 };
725
726
727 static int __init ne2k_pci_init(void)
728 {
729 /* when a module, this is printed whether or not devices are found in probe */
730 #ifdef MODULE
731 printk(version);
732 #endif
733 return pci_register_driver(&ne2k_driver);
734 }
735
736
737 static void __exit ne2k_pci_cleanup(void)
738 {
739 pci_unregister_driver (&ne2k_driver);
740 }
741
742 module_init(ne2k_pci_init);
743 module_exit(ne2k_pci_cleanup);
Linux kernel - Deliverables
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