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 static int debug = 1; /* 1 normal messages, 0 quiet .. 7 verbose. */
37
38 #define MAX_UNITS 8 /* More are supported, limit only on options */
39 /* Used to pass the full-duplex flag, etc. */
40 static int full_duplex[MAX_UNITS];
41 static int options[MAX_UNITS];
42
43 /* Force a non std. amount of memory. Units are 256 byte pages. */
44 /* #define PACKETBUF_MEMSIZE 0x40 */
45
46
47 #include <linux/module.h>
48 #include <linux/kernel.h>
49 #include <linux/errno.h>
50 #include <linux/pci.h>
51 #include <linux/init.h>
52 #include <linux/interrupt.h>
53 #include <linux/ethtool.h>
54 #include <linux/netdevice.h>
55 #include <linux/etherdevice.h>
56
57 #include <asm/system.h>
58 #include <asm/io.h>
59 #include <asm/irq.h>
60 #include <asm/uaccess.h>
61
62 #include "8390.h"
63
64 /* These identify the driver base version and may not be removed. */
65 static char version[] __devinitdata =
66 KERN_INFO DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE " 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(debug, int, 0);
80 module_param_array(options, int, NULL, 0);
81 module_param_array(full_duplex, int, NULL, 0);
82 MODULE_PARM_DESC(debug, "debug level (1-2)");
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[] __devinitdata = {
123 {"RealTek RTL-8029", REALTEK_FDX},
124 {"Winbond 89C940", 0},
125 {"Compex RL2000", 0},
126 {"KTI ET32P2", 0},
127 {"NetVin NV5000SC", 0},
128 {"Via 86C926", ONLY_16BIT_IO},
129 {"SureCom NE34", 0},
130 {"Winbond W89C940F", 0},
131 {"Holtek HT80232", ONLY_16BIT_IO | HOLTEK_FDX},
132 {"Holtek HT80229", ONLY_32BIT_IO | HOLTEK_FDX | STOP_PG_0x60 },
133 {"Winbond W89C940(misprogrammed)", 0},
134 {NULL,}
135 };
136
137
138 static 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_multicast_list = 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
ne2k_pci_init_one(struct pci_dev * pdev,const struct pci_device_id * ent)218 static int __devinit 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
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 return -ENODEV;
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 return -EBUSY;
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
284 SET_NETDEV_DEV(dev, &pdev->dev);
285
286 /* Reset card. Who knows what dain-bramaged state it was left in. */
287 {
288 unsigned long reset_start_time = jiffies;
289
290 outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET);
291
292 /* This looks like a horrible timing loop, but it should never take
293 more than a few cycles.
294 */
295 while ((inb(ioaddr + EN0_ISR) & ENISR_RESET) == 0)
296 /* Limit wait: '2' avoids jiffy roll-over. */
297 if (jiffies - reset_start_time > 2) {
298 dev_err(&pdev->dev,
299 "Card failure (no reset ack).\n");
300 goto err_out_free_netdev;
301 }
302
303 outb(0xff, ioaddr + EN0_ISR); /* Ack all intr. */
304 }
305
306 /* Read the 16 bytes of station address PROM.
307 We must first initialize registers, similar to NS8390_init(eifdev, 0).
308 We can't reliably read the SAPROM address without this.
309 (I learned the hard way!). */
310 {
311 struct {unsigned char value, offset; } program_seq[] = {
312 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
313 {0x49, EN0_DCFG}, /* Set word-wide access. */
314 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
315 {0x00, EN0_RCNTHI},
316 {0x00, EN0_IMR}, /* Mask completion irq. */
317 {0xFF, EN0_ISR},
318 {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */
319 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
320 {32, EN0_RCNTLO},
321 {0x00, EN0_RCNTHI},
322 {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */
323 {0x00, EN0_RSARHI},
324 {E8390_RREAD+E8390_START, E8390_CMD},
325 };
326 for (i = 0; i < ARRAY_SIZE(program_seq); i++)
327 outb(program_seq[i].value, ioaddr + program_seq[i].offset);
328
329 }
330
331 /* Note: all PCI cards have at least 16 bit access, so we don't have
332 to check for 8 bit cards. Most cards permit 32 bit access. */
333 if (flags & ONLY_32BIT_IO) {
334 for (i = 0; i < 4 ; i++)
335 ((u32 *)SA_prom)[i] = le32_to_cpu(inl(ioaddr + NE_DATAPORT));
336 } else
337 for(i = 0; i < 32 /*sizeof(SA_prom)*/; i++)
338 SA_prom[i] = inb(ioaddr + NE_DATAPORT);
339
340 /* We always set the 8390 registers for word mode. */
341 outb(0x49, ioaddr + EN0_DCFG);
342 start_page = NESM_START_PG;
343
344 stop_page = flags & STOP_PG_0x60 ? 0x60 : NESM_STOP_PG;
345
346 /* Set up the rest of the parameters. */
347 dev->irq = irq;
348 dev->base_addr = ioaddr;
349 pci_set_drvdata(pdev, dev);
350
351 ei_status.name = pci_clone_list[chip_idx].name;
352 ei_status.tx_start_page = start_page;
353 ei_status.stop_page = stop_page;
354 ei_status.word16 = 1;
355 ei_status.ne2k_flags = flags;
356 if (fnd_cnt < MAX_UNITS) {
357 if (full_duplex[fnd_cnt] > 0 || (options[fnd_cnt] & FORCE_FDX))
358 ei_status.ne2k_flags |= FORCE_FDX;
359 }
360
361 ei_status.rx_start_page = start_page + TX_PAGES;
362 #ifdef PACKETBUF_MEMSIZE
363 /* Allow the packet buffer size to be overridden by know-it-alls. */
364 ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
365 #endif
366
367 ei_status.reset_8390 = &ne2k_pci_reset_8390;
368 ei_status.block_input = &ne2k_pci_block_input;
369 ei_status.block_output = &ne2k_pci_block_output;
370 ei_status.get_8390_hdr = &ne2k_pci_get_8390_hdr;
371 ei_status.priv = (unsigned long) pdev;
372
373 dev->ethtool_ops = &ne2k_pci_ethtool_ops;
374 NS8390_init(dev, 0);
375
376 i = register_netdev(dev);
377 if (i)
378 goto err_out_free_netdev;
379
380 for(i = 0; i < 6; i++)
381 dev->dev_addr[i] = SA_prom[i];
382 printk("%s: %s found at %#lx, IRQ %d, %pM.\n",
383 dev->name, pci_clone_list[chip_idx].name, ioaddr, dev->irq,
384 dev->dev_addr);
385
386 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
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 pci_set_drvdata (pdev, NULL);
395 return -ENODEV;
396
397 }
398
399 /*
400 * Magic incantation sequence for full duplex on the supported cards.
401 */
set_realtek_fdx(struct net_device * dev)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
set_holtek_fdx(struct net_device * dev)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
ne2k_pci_set_fdx(struct net_device * dev)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
ne2k_pci_open(struct net_device * dev)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
ne2k_pci_close(struct net_device * dev)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. */
ne2k_pci_reset_8390(struct net_device * dev)454 static void ne2k_pci_reset_8390(struct net_device *dev)
455 {
456 unsigned long reset_start_time = jiffies;
457
458 if (debug > 1) printk("%s: Resetting the 8390 t=%ld...",
459 dev->name, 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 printk("%s: ne2k_pci_reset_8390() did not complete.\n", dev->name);
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
ne2k_pci_get_8390_hdr(struct net_device * dev,struct e8390_pkt_hdr * hdr,int ring_page)479 static 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 printk("%s: DMAing conflict in ne2k_pci_get_8390_hdr "
487 "[DMAstat:%d][irqlock:%d].\n",
488 dev->name, 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
ne2k_pci_block_input(struct net_device * dev,int count,struct sk_buff * skb,int ring_offset)516 static 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 printk("%s: DMAing conflict in ne2k_pci_block_input "
525 "[DMAstat:%d][irqlock:%d].\n",
526 dev->name, 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
ne2k_pci_block_output(struct net_device * dev,int count,const unsigned char * buf,const int start_page)563 static 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 printk("%s: DMAing conflict in ne2k_pci_block_output."
580 "[DMAstat:%d][irqlock:%d]\n",
581 dev->name, 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 printk(KERN_WARNING "%s: timeout waiting for Tx RDC.\n", dev->name);
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 return;
635 }
636
ne2k_pci_get_drvinfo(struct net_device * dev,struct ethtool_drvinfo * info)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 strcpy(info->driver, DRV_NAME);
644 strcpy(info->version, DRV_VERSION);
645 strcpy(info->bus_info, pci_name(pci_dev));
646 }
647
648 static const struct ethtool_ops ne2k_pci_ethtool_ops = {
649 .get_drvinfo = ne2k_pci_get_drvinfo,
650 };
651
ne2k_pci_remove_one(struct pci_dev * pdev)652 static void __devexit ne2k_pci_remove_one (struct pci_dev *pdev)
653 {
654 struct net_device *dev = pci_get_drvdata(pdev);
655
656 BUG_ON(!dev);
657 unregister_netdev(dev);
658 release_region(dev->base_addr, NE_IO_EXTENT);
659 free_netdev(dev);
660 pci_disable_device(pdev);
661 pci_set_drvdata(pdev, NULL);
662 }
663
664 #ifdef CONFIG_PM
ne2k_pci_suspend(struct pci_dev * pdev,pm_message_t state)665 static int ne2k_pci_suspend (struct pci_dev *pdev, pm_message_t state)
666 {
667 struct net_device *dev = pci_get_drvdata (pdev);
668
669 netif_device_detach(dev);
670 pci_save_state(pdev);
671 pci_disable_device(pdev);
672 pci_set_power_state(pdev, pci_choose_state(pdev, state));
673
674 return 0;
675 }
676
ne2k_pci_resume(struct pci_dev * pdev)677 static int ne2k_pci_resume (struct pci_dev *pdev)
678 {
679 struct net_device *dev = pci_get_drvdata (pdev);
680 int rc;
681
682 pci_set_power_state(pdev, 0);
683 pci_restore_state(pdev);
684
685 rc = pci_enable_device(pdev);
686 if (rc)
687 return rc;
688
689 NS8390_init(dev, 1);
690 netif_device_attach(dev);
691
692 return 0;
693 }
694
695 #endif /* CONFIG_PM */
696
697
698 static struct pci_driver ne2k_driver = {
699 .name = DRV_NAME,
700 .probe = ne2k_pci_init_one,
701 .remove = __devexit_p(ne2k_pci_remove_one),
702 .id_table = ne2k_pci_tbl,
703 #ifdef CONFIG_PM
704 .suspend = ne2k_pci_suspend,
705 .resume = ne2k_pci_resume,
706 #endif /* CONFIG_PM */
707
708 };
709
710
ne2k_pci_init(void)711 static int __init ne2k_pci_init(void)
712 {
713 /* when a module, this is printed whether or not devices are found in probe */
714 #ifdef MODULE
715 printk(version);
716 #endif
717 return pci_register_driver(&ne2k_driver);
718 }
719
720
ne2k_pci_cleanup(void)721 static void __exit ne2k_pci_cleanup(void)
722 {
723 pci_unregister_driver (&ne2k_driver);
724 }
725
726 module_init(ne2k_pci_init);
727 module_exit(ne2k_pci_cleanup);
728