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treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / drivers / net / ethernet / 8390 / ne2k-pci.c
blob42985a82321ae7072fd79cad716d653a06e83e60
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 <linux/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, 0444);
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 #ifdef CONFIG_NET_POLL_CONTROLLER
213 .ndo_poll_controller = ei_poll,
214 #endif
215 };
216
217 static int ne2k_pci_init_one(struct pci_dev *pdev,
218 const struct pci_device_id *ent)
219 {
220 struct net_device *dev;
221 int i;
222 unsigned char SA_prom[32];
223 int start_page, stop_page;
224 int irq, reg0, chip_idx = ent->driver_data;
225 static unsigned int fnd_cnt;
226 long ioaddr;
227 int flags = pci_clone_list[chip_idx].flags;
228 struct ei_device *ei_local;
229
230 /* when built into the kernel, we only print version if device is found */
231 #ifndef MODULE
232 static int printed_version;
233 if (!printed_version++)
234 printk(version);
235 #endif
236
237 fnd_cnt++;
238
239 i = pci_enable_device (pdev);
240 if (i)
241 return i;
242
243 ioaddr = pci_resource_start (pdev, 0);
244 irq = pdev->irq;
245
246 if (!ioaddr || ((pci_resource_flags (pdev, 0) & IORESOURCE_IO) == 0)) {
247 dev_err(&pdev->dev, "no I/O resource at PCI BAR #0\n");
248 goto err_out;
249 }
250
251 if (request_region (ioaddr, NE_IO_EXTENT, DRV_NAME) == NULL) {
252 dev_err(&pdev->dev, "I/O resource 0x%x @ 0x%lx busy\n",
253 NE_IO_EXTENT, ioaddr);
254 goto err_out;
255 }
256
257 reg0 = inb(ioaddr);
258 if (reg0 == 0xFF)
259 goto err_out_free_res;
260
261 /* Do a preliminary verification that we have a 8390. */
262 {
263 int regd;
264 outb(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD);
265 regd = inb(ioaddr + 0x0d);
266 outb(0xff, ioaddr + 0x0d);
267 outb(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD);
268 inb(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */
269 if (inb(ioaddr + EN0_COUNTER0) != 0) {
270 outb(reg0, ioaddr);
271 outb(regd, ioaddr + 0x0d); /* Restore the old values. */
272 goto err_out_free_res;
273 }
274 }
275
276 /* Allocate net_device, dev->priv; fill in 8390 specific dev fields. */
277 dev = alloc_ei_netdev();
278 if (!dev) {
279 dev_err(&pdev->dev, "cannot allocate ethernet device\n");
280 goto err_out_free_res;
281 }
282 dev->netdev_ops = &ne2k_netdev_ops;
283 ei_local = netdev_priv(dev);
284 ei_local->msg_enable = ne2k_msg_enable;
285
286 SET_NETDEV_DEV(dev, &pdev->dev);
287
288 /* Reset card. Who knows what dain-bramaged state it was left in. */
289 {
290 unsigned long reset_start_time = jiffies;
291
292 outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET);
293
294 /* This looks like a horrible timing loop, but it should never take
295 more than a few cycles.
296 */
297 while ((inb(ioaddr + EN0_ISR) & ENISR_RESET) == 0)
298 /* Limit wait: '2' avoids jiffy roll-over. */
299 if (jiffies - reset_start_time > 2) {
300 dev_err(&pdev->dev,
301 "Card failure (no reset ack).\n");
302 goto err_out_free_netdev;
303 }
304
305 outb(0xff, ioaddr + EN0_ISR); /* Ack all intr. */
306 }
307
308 /* Read the 16 bytes of station address PROM.
309 We must first initialize registers, similar to NS8390_init(eifdev, 0).
310 We can't reliably read the SAPROM address without this.
311 (I learned the hard way!). */
312 {
313 struct {unsigned char value, offset; } program_seq[] = {
314 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
315 {0x49, EN0_DCFG}, /* Set word-wide access. */
316 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
317 {0x00, EN0_RCNTHI},
318 {0x00, EN0_IMR}, /* Mask completion irq. */
319 {0xFF, EN0_ISR},
320 {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */
321 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
322 {32, EN0_RCNTLO},
323 {0x00, EN0_RCNTHI},
324 {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */
325 {0x00, EN0_RSARHI},
326 {E8390_RREAD+E8390_START, E8390_CMD},
327 };
328 for (i = 0; i < ARRAY_SIZE(program_seq); i++)
329 outb(program_seq[i].value, ioaddr + program_seq[i].offset);
330
331 }
332
333 /* Note: all PCI cards have at least 16 bit access, so we don't have
334 to check for 8 bit cards. Most cards permit 32 bit access. */
335 if (flags & ONLY_32BIT_IO) {
336 for (i = 0; i < 4 ; i++)
337 ((u32 *)SA_prom)[i] = le32_to_cpu(inl(ioaddr + NE_DATAPORT));
338 } else
339 for(i = 0; i < 32 /*sizeof(SA_prom)*/; i++)
340 SA_prom[i] = inb(ioaddr + NE_DATAPORT);
341
342 /* We always set the 8390 registers for word mode. */
343 outb(0x49, ioaddr + EN0_DCFG);
344 start_page = NESM_START_PG;
345
346 stop_page = flags & STOP_PG_0x60 ? 0x60 : NESM_STOP_PG;
347
348 /* Set up the rest of the parameters. */
349 dev->irq = irq;
350 dev->base_addr = ioaddr;
351 pci_set_drvdata(pdev, dev);
352
353 ei_status.name = pci_clone_list[chip_idx].name;
354 ei_status.tx_start_page = start_page;
355 ei_status.stop_page = stop_page;
356 ei_status.word16 = 1;
357 ei_status.ne2k_flags = flags;
358 if (fnd_cnt < MAX_UNITS) {
359 if (full_duplex[fnd_cnt] > 0 || (options[fnd_cnt] & FORCE_FDX))
360 ei_status.ne2k_flags |= FORCE_FDX;
361 }
362
363 ei_status.rx_start_page = start_page + TX_PAGES;
364 #ifdef PACKETBUF_MEMSIZE
365 /* Allow the packet buffer size to be overridden by know-it-alls. */
366 ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
367 #endif
368
369 ei_status.reset_8390 = &ne2k_pci_reset_8390;
370 ei_status.block_input = &ne2k_pci_block_input;
371 ei_status.block_output = &ne2k_pci_block_output;
372 ei_status.get_8390_hdr = &ne2k_pci_get_8390_hdr;
373 ei_status.priv = (unsigned long) pdev;
374
375 dev->ethtool_ops = &ne2k_pci_ethtool_ops;
376 NS8390_init(dev, 0);
377
378 memcpy(dev->dev_addr, SA_prom, dev->addr_len);
379
380 i = register_netdev(dev);
381 if (i)
382 goto err_out_free_netdev;
383
384 netdev_info(dev, "%s found at %#lx, IRQ %d, %pM.\n",
385 pci_clone_list[chip_idx].name, ioaddr, dev->irq,
386 dev->dev_addr);
387
388 return 0;
389
390 err_out_free_netdev:
391 free_netdev (dev);
392 err_out_free_res:
393 release_region (ioaddr, NE_IO_EXTENT);
394 err_out:
395 pci_disable_device(pdev);
396 return -ENODEV;
397 }
398
399 /*
400 * Magic incantation sequence for full duplex on the supported cards.
401 */
402 static inline int set_realtek_fdx(struct net_device *dev)
403 {
404 long ioaddr = dev->base_addr;
405
406 outb(0xC0 + E8390_NODMA, ioaddr + NE_CMD); /* Page 3 */
407 outb(0xC0, ioaddr + 0x01); /* Enable writes to CONFIG3 */
408 outb(0x40, ioaddr + 0x06); /* Enable full duplex */
409 outb(0x00, ioaddr + 0x01); /* Disable writes to CONFIG3 */
410 outb(E8390_PAGE0 + E8390_NODMA, ioaddr + NE_CMD); /* Page 0 */
411 return 0;
412 }
413
414 static inline int set_holtek_fdx(struct net_device *dev)
415 {
416 long ioaddr = dev->base_addr;
417
418 outb(inb(ioaddr + 0x20) | 0x80, ioaddr + 0x20);
419 return 0;
420 }
421
422 static int ne2k_pci_set_fdx(struct net_device *dev)
423 {
424 if (ei_status.ne2k_flags & REALTEK_FDX)
425 return set_realtek_fdx(dev);
426 else if (ei_status.ne2k_flags & HOLTEK_FDX)
427 return set_holtek_fdx(dev);
428
429 return -EOPNOTSUPP;
430 }
431
432 static int ne2k_pci_open(struct net_device *dev)
433 {
434 int ret = request_irq(dev->irq, ei_interrupt, IRQF_SHARED, dev->name, dev);
435 if (ret)
436 return ret;
437
438 if (ei_status.ne2k_flags & FORCE_FDX)
439 ne2k_pci_set_fdx(dev);
440
441 ei_open(dev);
442 return 0;
443 }
444
445 static int ne2k_pci_close(struct net_device *dev)
446 {
447 ei_close(dev);
448 free_irq(dev->irq, dev);
449 return 0;
450 }
451
452 /* Hard reset the card. This used to pause for the same period that a
453 8390 reset command required, but that shouldn't be necessary. */
454 static void ne2k_pci_reset_8390(struct net_device *dev)
455 {
456 unsigned long reset_start_time = jiffies;
457 struct ei_device *ei_local = netdev_priv(dev);
458
459 netif_dbg(ei_local, hw, dev, "resetting the 8390 t=%ld...\n",
460 jiffies);
461
462 outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
463
464 ei_status.txing = 0;
465 ei_status.dmaing = 0;
466
467 /* This check _should_not_ be necessary, omit eventually. */
468 while ((inb(NE_BASE+EN0_ISR) & ENISR_RESET) == 0)
469 if (jiffies - reset_start_time > 2) {
470 netdev_err(dev, "ne2k_pci_reset_8390() did not complete.\n");
471 break;
472 }
473 outb(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */
474 }
475
476 /* Grab the 8390 specific header. Similar to the block_input routine, but
477 we don't need to be concerned with ring wrap as the header will be at
478 the start of a page, so we optimize accordingly. */
479
480 static void ne2k_pci_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
481 {
482
483 long nic_base = dev->base_addr;
484
485 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
486 if (ei_status.dmaing) {
487 netdev_err(dev, "DMAing conflict in ne2k_pci_get_8390_hdr "
488 "[DMAstat:%d][irqlock:%d].\n",
489 ei_status.dmaing, ei_status.irqlock);
490 return;
491 }
492
493 ei_status.dmaing |= 0x01;
494 outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
495 outb(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
496 outb(0, nic_base + EN0_RCNTHI);
497 outb(0, nic_base + EN0_RSARLO); /* On page boundary */
498 outb(ring_page, nic_base + EN0_RSARHI);
499 outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
500
501 if (ei_status.ne2k_flags & ONLY_16BIT_IO) {
502 insw(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1);
503 } else {
504 *(u32*)hdr = le32_to_cpu(inl(NE_BASE + NE_DATAPORT));
505 le16_to_cpus(&hdr->count);
506 }
507
508 outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
509 ei_status.dmaing &= ~0x01;
510 }
511
512 /* Block input and output, similar to the Crynwr packet driver. If you
513 are porting to a new ethercard, look at the packet driver source for hints.
514 The NEx000 doesn't share the on-board packet memory -- you have to put
515 the packet out through the "remote DMA" dataport using outb. */
516
517 static void ne2k_pci_block_input(struct net_device *dev, int count,
518 struct sk_buff *skb, int ring_offset)
519 {
520 long nic_base = dev->base_addr;
521 char *buf = skb->data;
522
523 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
524 if (ei_status.dmaing) {
525 netdev_err(dev, "DMAing conflict in ne2k_pci_block_input "
526 "[DMAstat:%d][irqlock:%d].\n",
527 ei_status.dmaing, ei_status.irqlock);
528 return;
529 }
530 ei_status.dmaing |= 0x01;
531 if (ei_status.ne2k_flags & ONLY_32BIT_IO)
532 count = (count + 3) & 0xFFFC;
533 outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
534 outb(count & 0xff, nic_base + EN0_RCNTLO);
535 outb(count >> 8, nic_base + EN0_RCNTHI);
536 outb(ring_offset & 0xff, nic_base + EN0_RSARLO);
537 outb(ring_offset >> 8, nic_base + EN0_RSARHI);
538 outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
539
540 if (ei_status.ne2k_flags & ONLY_16BIT_IO) {
541 insw(NE_BASE + NE_DATAPORT,buf,count>>1);
542 if (count & 0x01) {
543 buf[count-1] = inb(NE_BASE + NE_DATAPORT);
544 }
545 } else {
546 insl(NE_BASE + NE_DATAPORT, buf, count>>2);
547 if (count & 3) {
548 buf += count & ~3;
549 if (count & 2) {
550 __le16 *b = (__le16 *)buf;
551
552 *b++ = cpu_to_le16(inw(NE_BASE + NE_DATAPORT));
553 buf = (char *)b;
554 }
555 if (count & 1)
556 *buf = inb(NE_BASE + NE_DATAPORT);
557 }
558 }
559
560 outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
561 ei_status.dmaing &= ~0x01;
562 }
563
564 static void ne2k_pci_block_output(struct net_device *dev, int count,
565 const unsigned char *buf, const int start_page)
566 {
567 long nic_base = NE_BASE;
568 unsigned long dma_start;
569
570 /* On little-endian it's always safe to round the count up for
571 word writes. */
572 if (ei_status.ne2k_flags & ONLY_32BIT_IO)
573 count = (count + 3) & 0xFFFC;
574 else
575 if (count & 0x01)
576 count++;
577
578 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
579 if (ei_status.dmaing) {
580 netdev_err(dev, "DMAing conflict in ne2k_pci_block_output."
581 "[DMAstat:%d][irqlock:%d]\n",
582 ei_status.dmaing, ei_status.irqlock);
583 return;
584 }
585 ei_status.dmaing |= 0x01;
586 /* We should already be in page 0, but to be safe... */
587 outb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
588
589 #ifdef NE8390_RW_BUGFIX
590 /* Handle the read-before-write bug the same way as the
591 Crynwr packet driver -- the NatSemi method doesn't work.
592 Actually this doesn't always work either, but if you have
593 problems with your NEx000 this is better than nothing! */
594 outb(0x42, nic_base + EN0_RCNTLO);
595 outb(0x00, nic_base + EN0_RCNTHI);
596 outb(0x42, nic_base + EN0_RSARLO);
597 outb(0x00, nic_base + EN0_RSARHI);
598 outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
599 #endif
600 outb(ENISR_RDC, nic_base + EN0_ISR);
601
602 /* Now the normal output. */
603 outb(count & 0xff, nic_base + EN0_RCNTLO);
604 outb(count >> 8, nic_base + EN0_RCNTHI);
605 outb(0x00, nic_base + EN0_RSARLO);
606 outb(start_page, nic_base + EN0_RSARHI);
607 outb(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
608 if (ei_status.ne2k_flags & ONLY_16BIT_IO) {
609 outsw(NE_BASE + NE_DATAPORT, buf, count>>1);
610 } else {
611 outsl(NE_BASE + NE_DATAPORT, buf, count>>2);
612 if (count & 3) {
613 buf += count & ~3;
614 if (count & 2) {
615 __le16 *b = (__le16 *)buf;
616
617 outw(le16_to_cpu(*b++), NE_BASE + NE_DATAPORT);
618 buf = (char *)b;
619 }
620 }
621 }
622
623 dma_start = jiffies;
624
625 while ((inb(nic_base + EN0_ISR) & ENISR_RDC) == 0)
626 if (jiffies - dma_start > 2) { /* Avoid clock roll-over. */
627 netdev_warn(dev, "timeout waiting for Tx RDC.\n");
628 ne2k_pci_reset_8390(dev);
629 NS8390_init(dev,1);
630 break;
631 }
632
633 outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
634 ei_status.dmaing &= ~0x01;
635 }
636
637 static void ne2k_pci_get_drvinfo(struct net_device *dev,
638 struct ethtool_drvinfo *info)
639 {
640 struct ei_device *ei = netdev_priv(dev);
641 struct pci_dev *pci_dev = (struct pci_dev *) ei->priv;
642
643 strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
644 strlcpy(info->version, DRV_VERSION, sizeof(info->version));
645 strlcpy(info->bus_info, pci_name(pci_dev), sizeof(info->bus_info));
646 }
647
648 static u32 ne2k_pci_get_msglevel(struct net_device *dev)
649 {
650 struct ei_device *ei_local = netdev_priv(dev);
651
652 return ei_local->msg_enable;
653 }
654
655 static void ne2k_pci_set_msglevel(struct net_device *dev, u32 v)
656 {
657 struct ei_device *ei_local = netdev_priv(dev);
658
659 ei_local->msg_enable = v;
660 }
661
662 static const struct ethtool_ops ne2k_pci_ethtool_ops = {
663 .get_drvinfo = ne2k_pci_get_drvinfo,
664 .get_msglevel = ne2k_pci_get_msglevel,
665 .set_msglevel = ne2k_pci_set_msglevel,
666 };
667
668 static void ne2k_pci_remove_one(struct pci_dev *pdev)
669 {
670 struct net_device *dev = pci_get_drvdata(pdev);
671
672 BUG_ON(!dev);
673 unregister_netdev(dev);
674 release_region(dev->base_addr, NE_IO_EXTENT);
675 free_netdev(dev);
676 pci_disable_device(pdev);
677 }
678
679 #ifdef CONFIG_PM
680 static int ne2k_pci_suspend (struct pci_dev *pdev, pm_message_t state)
681 {
682 struct net_device *dev = pci_get_drvdata (pdev);
683
684 netif_device_detach(dev);
685 pci_save_state(pdev);
686 pci_disable_device(pdev);
687 pci_set_power_state(pdev, pci_choose_state(pdev, state));
688
689 return 0;
690 }
691
692 static int ne2k_pci_resume (struct pci_dev *pdev)
693 {
694 struct net_device *dev = pci_get_drvdata (pdev);
695 int rc;
696
697 pci_set_power_state(pdev, PCI_D0);
698 pci_restore_state(pdev);
699
700 rc = pci_enable_device(pdev);
701 if (rc)
702 return rc;
703
704 NS8390_init(dev, 1);
705 netif_device_attach(dev);
706
707 return 0;
708 }
709
710 #endif /* CONFIG_PM */
711
712
713 static struct pci_driver ne2k_driver = {
714 .name = DRV_NAME,
715 .probe = ne2k_pci_init_one,
716 .remove = ne2k_pci_remove_one,
717 .id_table = ne2k_pci_tbl,
718 #ifdef CONFIG_PM
719 .suspend = ne2k_pci_suspend,
720 .resume = ne2k_pci_resume,
721 #endif /* CONFIG_PM */
722
723 };
724
725
726 static int __init ne2k_pci_init(void)
727 {
728 /* when a module, this is printed whether or not devices are found in probe */
729 #ifdef MODULE
730 printk(version);
731 #endif
732 return pci_register_driver(&ne2k_driver);
733 }
734
735
736 static void __exit ne2k_pci_cleanup(void)
737 {
738 pci_unregister_driver (&ne2k_driver);
739 }
740
741 module_init(ne2k_pci_init);
742 module_exit(ne2k_pci_cleanup);
Linux with added FPC-III support