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1 | /* sb1000.c: A General Instruments SB1000 driver for linux. */ |
2 | /* |
3 | Written 1998 by Franco Venturi. |
4 | |
5 | Copyright 1998 by Franco Venturi. |
6 | Copyright 1994,1995 by Donald Becker. |
7 | Copyright 1993 United States Government as represented by the |
8 | Director, National Security Agency. |
9 | |
10 | This driver is for the General Instruments SB1000 (internal SURFboard) |
11 | |
12 | The author may be reached as fventuri@mediaone.net |
13 | |
14 | This program is free software; you can redistribute it |
15 | and/or modify it under the terms of the GNU General |
16 | Public License as published by the Free Software |
17 | Foundation; either version 2 of the License, or (at |
18 | your option) any later version. |
19 | |
20 | Changes: |
21 | |
22 | 981115 Steven Hirsch <shirsch@adelphia.net> |
23 | |
24 | Linus changed the timer interface. Should work on all recent |
25 | development kernels. |
26 | |
27 | 980608 Steven Hirsch <shirsch@adelphia.net> |
28 | |
29 | Small changes to make it work with 2.1.x kernels. Hopefully, |
30 | nothing major will change before official release of Linux 2.2. |
31 | |
32 | Merged with 2.2 - Alan Cox |
33 | */ |
34 | |
35 | static char version[] = "sb1000.c:v1.1.2 6/01/98 (fventuri@mediaone.net)\n"; |
36 | |
37 | #include <linux/module.h> |
38 | #include <linux/kernel.h> |
39 | #include <linux/sched.h> |
40 | #include <linux/string.h> |
41 | #include <linux/interrupt.h> |
42 | #include <linux/errno.h> |
43 | #include <linux/if_cablemodem.h> /* for SIOGCM/SIOSCM stuff */ |
44 | #include <linux/in.h> |
45 | #include <linux/ioport.h> |
46 | #include <linux/netdevice.h> |
47 | #include <linux/if_arp.h> |
48 | #include <linux/skbuff.h> |
49 | #include <linux/delay.h> /* for udelay() */ |
50 | #include <linux/etherdevice.h> |
51 | #include <linux/pnp.h> |
52 | #include <linux/init.h> |
53 | #include <linux/bitops.h> |
54 | #include <linux/gfp.h> |
55 | |
56 | #include <asm/io.h> |
57 | #include <asm/processor.h> |
58 | #include <asm/uaccess.h> |
59 | |
60 | #ifdef SB1000_DEBUG |
61 | static int sb1000_debug = SB1000_DEBUG; |
62 | #else |
63 | static const int sb1000_debug = 1; |
64 | #endif |
65 | |
66 | static const int SB1000_IO_EXTENT = 8; |
67 | /* SB1000 Maximum Receive Unit */ |
68 | static const int SB1000_MRU = 1500; /* octects */ |
69 | |
70 | #define NPIDS 4 |
71 | struct sb1000_private { |
72 | struct sk_buff *rx_skb[NPIDS]; |
73 | short rx_dlen[NPIDS]; |
74 | unsigned int rx_frames; |
75 | short rx_error_count; |
76 | short rx_error_dpc_count; |
77 | unsigned char rx_session_id[NPIDS]; |
78 | unsigned char rx_frame_id[NPIDS]; |
79 | unsigned char rx_pkt_type[NPIDS]; |
80 | }; |
81 | |
82 | /* prototypes for Linux interface */ |
83 | extern int sb1000_probe(struct net_device *dev); |
84 | static int sb1000_open(struct net_device *dev); |
85 | static int sb1000_dev_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd); |
86 | static netdev_tx_t sb1000_start_xmit(struct sk_buff *skb, |
87 | struct net_device *dev); |
88 | static irqreturn_t sb1000_interrupt(int irq, void *dev_id); |
89 | static int sb1000_close(struct net_device *dev); |
90 | |
91 | |
92 | /* SB1000 hardware routines to be used during open/configuration phases */ |
93 | static int card_wait_for_busy_clear(const int ioaddr[], |
94 | const char* name); |
95 | static int card_wait_for_ready(const int ioaddr[], const char* name, |
96 | unsigned char in[]); |
97 | static int card_send_command(const int ioaddr[], const char* name, |
98 | const unsigned char out[], unsigned char in[]); |
99 | |
100 | /* SB1000 hardware routines to be used during frame rx interrupt */ |
101 | static int sb1000_wait_for_ready(const int ioaddr[], const char* name); |
102 | static int sb1000_wait_for_ready_clear(const int ioaddr[], |
103 | const char* name); |
104 | static void sb1000_send_command(const int ioaddr[], const char* name, |
105 | const unsigned char out[]); |
106 | static void sb1000_read_status(const int ioaddr[], unsigned char in[]); |
107 | static void sb1000_issue_read_command(const int ioaddr[], |
108 | const char* name); |
109 | |
110 | /* SB1000 commands for open/configuration */ |
111 | static int sb1000_reset(const int ioaddr[], const char* name); |
112 | static int sb1000_check_CRC(const int ioaddr[], const char* name); |
113 | static inline int sb1000_start_get_set_command(const int ioaddr[], |
114 | const char* name); |
115 | static int sb1000_end_get_set_command(const int ioaddr[], |
116 | const char* name); |
117 | static int sb1000_activate(const int ioaddr[], const char* name); |
118 | static int sb1000_get_firmware_version(const int ioaddr[], |
119 | const char* name, unsigned char version[], int do_end); |
120 | static int sb1000_get_frequency(const int ioaddr[], const char* name, |
121 | int* frequency); |
122 | static int sb1000_set_frequency(const int ioaddr[], const char* name, |
123 | int frequency); |
124 | static int sb1000_get_PIDs(const int ioaddr[], const char* name, |
125 | short PID[]); |
126 | static int sb1000_set_PIDs(const int ioaddr[], const char* name, |
127 | const short PID[]); |
128 | |
129 | /* SB1000 commands for frame rx interrupt */ |
130 | static int sb1000_rx(struct net_device *dev); |
131 | static void sb1000_error_dpc(struct net_device *dev); |
132 | |
133 | static const struct pnp_device_id sb1000_pnp_ids[] = { |
134 | { "GIC1000", 0 }, |
135 | { "", 0 } |
136 | }; |
137 | MODULE_DEVICE_TABLE(pnp, sb1000_pnp_ids); |
138 | |
139 | static const struct net_device_ops sb1000_netdev_ops = { |
140 | .ndo_open = sb1000_open, |
141 | .ndo_start_xmit = sb1000_start_xmit, |
142 | .ndo_do_ioctl = sb1000_dev_ioctl, |
143 | .ndo_stop = sb1000_close, |
144 | .ndo_change_mtu = eth_change_mtu, |
145 | .ndo_set_mac_address = eth_mac_addr, |
146 | .ndo_validate_addr = eth_validate_addr, |
147 | }; |
148 | |
149 | static int |
150 | sb1000_probe_one(struct pnp_dev *pdev, const struct pnp_device_id *id) |
151 | { |
152 | struct net_device *dev; |
153 | unsigned short ioaddr[2], irq; |
154 | unsigned int serial_number; |
155 | int error = -ENODEV; |
156 | |
157 | if (pnp_device_attach(pdev) < 0) |
158 | return -ENODEV; |
159 | if (pnp_activate_dev(pdev) < 0) |
160 | goto out_detach; |
161 | |
162 | if (!pnp_port_valid(pdev, 0) || !pnp_port_valid(pdev, 1)) |
163 | goto out_disable; |
164 | if (!pnp_irq_valid(pdev, 0)) |
165 | goto out_disable; |
166 | |
167 | serial_number = pdev->card->serial; |
168 | |
169 | ioaddr[0] = pnp_port_start(pdev, 0); |
170 | ioaddr[1] = pnp_port_start(pdev, 0); |
171 | |
172 | irq = pnp_irq(pdev, 0); |
173 | |
174 | if (!request_region(ioaddr[0], 16, "sb1000")) |
175 | goto out_disable; |
176 | if (!request_region(ioaddr[1], 16, "sb1000")) |
177 | goto out_release_region0; |
178 | |
179 | dev = alloc_etherdev(sizeof(struct sb1000_private)); |
180 | if (!dev) { |
181 | error = -ENOMEM; |
182 | goto out_release_regions; |
183 | } |
184 | |
185 | |
186 | dev->base_addr = ioaddr[0]; |
187 | /* mem_start holds the second I/O address */ |
188 | dev->mem_start = ioaddr[1]; |
189 | dev->irq = irq; |
190 | |
191 | if (sb1000_debug > 0) |
192 | printk(KERN_NOTICE "%s: sb1000 at (%#3.3lx,%#3.3lx), " |
193 | "S/N %#8.8x, IRQ %d.\n", dev->name, dev->base_addr, |
194 | dev->mem_start, serial_number, dev->irq); |
195 | |
196 | /* |
197 | * The SB1000 is an rx-only cable modem device. The uplink is a modem |
198 | * and we do not want to arp on it. |
199 | */ |
200 | dev->flags = IFF_POINTOPOINT|IFF_NOARP; |
201 | |
202 | SET_NETDEV_DEV(dev, &pdev->dev); |
203 | |
204 | if (sb1000_debug > 0) |
205 | printk(KERN_NOTICE "%s", version); |
206 | |
207 | dev->netdev_ops = &sb1000_netdev_ops; |
208 | |
209 | /* hardware address is 0:0:serial_number */ |
210 | dev->dev_addr[2] = serial_number >> 24 & 0xff; |
211 | dev->dev_addr[3] = serial_number >> 16 & 0xff; |
212 | dev->dev_addr[4] = serial_number >> 8 & 0xff; |
213 | dev->dev_addr[5] = serial_number >> 0 & 0xff; |
214 | |
215 | pnp_set_drvdata(pdev, dev); |
216 | |
217 | error = register_netdev(dev); |
218 | if (error) |
219 | goto out_free_netdev; |
220 | return 0; |
221 | |
222 | out_free_netdev: |
223 | free_netdev(dev); |
224 | out_release_regions: |
225 | release_region(ioaddr[1], 16); |
226 | out_release_region0: |
227 | release_region(ioaddr[0], 16); |
228 | out_disable: |
229 | pnp_disable_dev(pdev); |
230 | out_detach: |
231 | pnp_device_detach(pdev); |
232 | return error; |
233 | } |
234 | |
235 | static void |
236 | sb1000_remove_one(struct pnp_dev *pdev) |
237 | { |
238 | struct net_device *dev = pnp_get_drvdata(pdev); |
239 | |
240 | unregister_netdev(dev); |
241 | release_region(dev->base_addr, 16); |
242 | release_region(dev->mem_start, 16); |
243 | free_netdev(dev); |
244 | } |
245 | |
246 | static struct pnp_driver sb1000_driver = { |
247 | .name = "sb1000", |
248 | .id_table = sb1000_pnp_ids, |
249 | .probe = sb1000_probe_one, |
250 | .remove = sb1000_remove_one, |
251 | }; |
252 | |
253 | |
254 | /* |
255 | * SB1000 hardware routines to be used during open/configuration phases |
256 | */ |
257 | |
258 | static const int TimeOutJiffies = (875 * HZ) / 100; |
259 | |
260 | /* Card Wait For Busy Clear (cannot be used during an interrupt) */ |
261 | static int |
262 | card_wait_for_busy_clear(const int ioaddr[], const char* name) |
263 | { |
264 | unsigned char a; |
265 | unsigned long timeout; |
266 | |
267 | a = inb(ioaddr[0] + 7); |
268 | timeout = jiffies + TimeOutJiffies; |
269 | while (a & 0x80 || a & 0x40) { |
270 | /* a little sleep */ |
271 | yield(); |
272 | |
273 | a = inb(ioaddr[0] + 7); |
274 | if (time_after_eq(jiffies, timeout)) { |
275 | printk(KERN_WARNING "%s: card_wait_for_busy_clear timeout\n", |
276 | name); |
277 | return -ETIME; |
278 | } |
279 | } |
280 | |
281 | return 0; |
282 | } |
283 | |
284 | /* Card Wait For Ready (cannot be used during an interrupt) */ |
285 | static int |
286 | card_wait_for_ready(const int ioaddr[], const char* name, unsigned char in[]) |
287 | { |
288 | unsigned char a; |
289 | unsigned long timeout; |
290 | |
291 | a = inb(ioaddr[1] + 6); |
292 | timeout = jiffies + TimeOutJiffies; |
293 | while (a & 0x80 || !(a & 0x40)) { |
294 | /* a little sleep */ |
295 | yield(); |
296 | |
297 | a = inb(ioaddr[1] + 6); |
298 | if (time_after_eq(jiffies, timeout)) { |
299 | printk(KERN_WARNING "%s: card_wait_for_ready timeout\n", |
300 | name); |
301 | return -ETIME; |
302 | } |
303 | } |
304 | |
305 | in[1] = inb(ioaddr[0] + 1); |
306 | in[2] = inb(ioaddr[0] + 2); |
307 | in[3] = inb(ioaddr[0] + 3); |
308 | in[4] = inb(ioaddr[0] + 4); |
309 | in[0] = inb(ioaddr[0] + 5); |
310 | in[6] = inb(ioaddr[0] + 6); |
311 | in[5] = inb(ioaddr[1] + 6); |
312 | return 0; |
313 | } |
314 | |
315 | /* Card Send Command (cannot be used during an interrupt) */ |
316 | static int |
317 | card_send_command(const int ioaddr[], const char* name, |
318 | const unsigned char out[], unsigned char in[]) |
319 | { |
320 | int status, x; |
321 | |
322 | if ((status = card_wait_for_busy_clear(ioaddr, name))) |
323 | return status; |
324 | outb(0xa0, ioaddr[0] + 6); |
325 | outb(out[2], ioaddr[0] + 1); |
326 | outb(out[3], ioaddr[0] + 2); |
327 | outb(out[4], ioaddr[0] + 3); |
328 | outb(out[5], ioaddr[0] + 4); |
329 | outb(out[1], ioaddr[0] + 5); |
330 | outb(0xa0, ioaddr[0] + 6); |
331 | outb(out[0], ioaddr[0] + 7); |
332 | if (out[0] != 0x20 && out[0] != 0x30) { |
333 | if ((status = card_wait_for_ready(ioaddr, name, in))) |
334 | return status; |
335 | inb(ioaddr[0] + 7); |
336 | if (sb1000_debug > 3) |
337 | printk(KERN_DEBUG "%s: card_send_command " |
338 | "out: %02x%02x%02x%02x%02x%02x " |
339 | "in: %02x%02x%02x%02x%02x%02x%02x\n", name, |
340 | out[0], out[1], out[2], out[3], out[4], out[5], |
341 | in[0], in[1], in[2], in[3], in[4], in[5], in[6]); |
342 | } else { |
343 | if (sb1000_debug > 3) |
344 | printk(KERN_DEBUG "%s: card_send_command " |
345 | "out: %02x%02x%02x%02x%02x%02x\n", name, |
346 | out[0], out[1], out[2], out[3], out[4], out[5]); |
347 | } |
348 | |
349 | if (out[1] == 0x1b) { |
350 | x = (out[2] == 0x02); |
351 | } else { |
352 | if (out[0] >= 0x80 && in[0] != (out[1] | 0x80)) |
353 | return -EIO; |
354 | } |
355 | return 0; |
356 | } |
357 | |
358 | |
359 | /* |
360 | * SB1000 hardware routines to be used during frame rx interrupt |
361 | */ |
362 | static const int Sb1000TimeOutJiffies = 7 * HZ; |
363 | |
364 | /* Card Wait For Ready (to be used during frame rx) */ |
365 | static int |
366 | sb1000_wait_for_ready(const int ioaddr[], const char* name) |
367 | { |
368 | unsigned long timeout; |
369 | |
370 | timeout = jiffies + Sb1000TimeOutJiffies; |
371 | while (inb(ioaddr[1] + 6) & 0x80) { |
372 | if (time_after_eq(jiffies, timeout)) { |
373 | printk(KERN_WARNING "%s: sb1000_wait_for_ready timeout\n", |
374 | name); |
375 | return -ETIME; |
376 | } |
377 | } |
378 | timeout = jiffies + Sb1000TimeOutJiffies; |
379 | while (!(inb(ioaddr[1] + 6) & 0x40)) { |
380 | if (time_after_eq(jiffies, timeout)) { |
381 | printk(KERN_WARNING "%s: sb1000_wait_for_ready timeout\n", |
382 | name); |
383 | return -ETIME; |
384 | } |
385 | } |
386 | inb(ioaddr[0] + 7); |
387 | return 0; |
388 | } |
389 | |
390 | /* Card Wait For Ready Clear (to be used during frame rx) */ |
391 | static int |
392 | sb1000_wait_for_ready_clear(const int ioaddr[], const char* name) |
393 | { |
394 | unsigned long timeout; |
395 | |
396 | timeout = jiffies + Sb1000TimeOutJiffies; |
397 | while (inb(ioaddr[1] + 6) & 0x80) { |
398 | if (time_after_eq(jiffies, timeout)) { |
399 | printk(KERN_WARNING "%s: sb1000_wait_for_ready_clear timeout\n", |
400 | name); |
401 | return -ETIME; |
402 | } |
403 | } |
404 | timeout = jiffies + Sb1000TimeOutJiffies; |
405 | while (inb(ioaddr[1] + 6) & 0x40) { |
406 | if (time_after_eq(jiffies, timeout)) { |
407 | printk(KERN_WARNING "%s: sb1000_wait_for_ready_clear timeout\n", |
408 | name); |
409 | return -ETIME; |
410 | } |
411 | } |
412 | return 0; |
413 | } |
414 | |
415 | /* Card Send Command (to be used during frame rx) */ |
416 | static void |
417 | sb1000_send_command(const int ioaddr[], const char* name, |
418 | const unsigned char out[]) |
419 | { |
420 | outb(out[2], ioaddr[0] + 1); |
421 | outb(out[3], ioaddr[0] + 2); |
422 | outb(out[4], ioaddr[0] + 3); |
423 | outb(out[5], ioaddr[0] + 4); |
424 | outb(out[1], ioaddr[0] + 5); |
425 | outb(out[0], ioaddr[0] + 7); |
426 | if (sb1000_debug > 3) |
427 | printk(KERN_DEBUG "%s: sb1000_send_command out: %02x%02x%02x%02x" |
428 | "%02x%02x\n", name, out[0], out[1], out[2], out[3], out[4], out[5]); |
429 | } |
430 | |
431 | /* Card Read Status (to be used during frame rx) */ |
432 | static void |
433 | sb1000_read_status(const int ioaddr[], unsigned char in[]) |
434 | { |
435 | in[1] = inb(ioaddr[0] + 1); |
436 | in[2] = inb(ioaddr[0] + 2); |
437 | in[3] = inb(ioaddr[0] + 3); |
438 | in[4] = inb(ioaddr[0] + 4); |
439 | in[0] = inb(ioaddr[0] + 5); |
440 | } |
441 | |
442 | /* Issue Read Command (to be used during frame rx) */ |
443 | static void |
444 | sb1000_issue_read_command(const int ioaddr[], const char* name) |
445 | { |
446 | static const unsigned char Command0[6] = {0x20, 0x00, 0x00, 0x01, 0x00, 0x00}; |
447 | |
448 | sb1000_wait_for_ready_clear(ioaddr, name); |
449 | outb(0xa0, ioaddr[0] + 6); |
450 | sb1000_send_command(ioaddr, name, Command0); |
451 | } |
452 | |
453 | |
454 | /* |
455 | * SB1000 commands for open/configuration |
456 | */ |
457 | /* reset SB1000 card */ |
458 | static int |
459 | sb1000_reset(const int ioaddr[], const char* name) |
460 | { |
461 | static const unsigned char Command0[6] = {0x80, 0x16, 0x00, 0x00, 0x00, 0x00}; |
462 | |
463 | unsigned char st[7]; |
464 | int port, status; |
465 | |
466 | port = ioaddr[1] + 6; |
467 | outb(0x4, port); |
468 | inb(port); |
469 | udelay(1000); |
470 | outb(0x0, port); |
471 | inb(port); |
472 | ssleep(1); |
473 | outb(0x4, port); |
474 | inb(port); |
475 | udelay(1000); |
476 | outb(0x0, port); |
477 | inb(port); |
478 | udelay(0); |
479 | |
480 | if ((status = card_send_command(ioaddr, name, Command0, st))) |
481 | return status; |
482 | if (st[3] != 0xf0) |
483 | return -EIO; |
484 | return 0; |
485 | } |
486 | |
487 | /* check SB1000 firmware CRC */ |
488 | static int |
489 | sb1000_check_CRC(const int ioaddr[], const char* name) |
490 | { |
491 | static const unsigned char Command0[6] = {0x80, 0x1f, 0x00, 0x00, 0x00, 0x00}; |
492 | |
493 | unsigned char st[7]; |
494 | int crc, status; |
495 | |
496 | /* check CRC */ |
497 | if ((status = card_send_command(ioaddr, name, Command0, st))) |
498 | return status; |
499 | if (st[1] != st[3] || st[2] != st[4]) |
500 | return -EIO; |
501 | crc = st[1] << 8 | st[2]; |
502 | return 0; |
503 | } |
504 | |
505 | static inline int |
506 | sb1000_start_get_set_command(const int ioaddr[], const char* name) |
507 | { |
508 | static const unsigned char Command0[6] = {0x80, 0x1b, 0x00, 0x00, 0x00, 0x00}; |
509 | |
510 | unsigned char st[7]; |
511 | |
512 | return card_send_command(ioaddr, name, Command0, st); |
513 | } |
514 | |
515 | static int |
516 | sb1000_end_get_set_command(const int ioaddr[], const char* name) |
517 | { |
518 | static const unsigned char Command0[6] = {0x80, 0x1b, 0x02, 0x00, 0x00, 0x00}; |
519 | static const unsigned char Command1[6] = {0x20, 0x00, 0x00, 0x00, 0x00, 0x00}; |
520 | |
521 | unsigned char st[7]; |
522 | int status; |
523 | |
524 | if ((status = card_send_command(ioaddr, name, Command0, st))) |
525 | return status; |
526 | return card_send_command(ioaddr, name, Command1, st); |
527 | } |
528 | |
529 | static int |
530 | sb1000_activate(const int ioaddr[], const char* name) |
531 | { |
532 | static const unsigned char Command0[6] = {0x80, 0x11, 0x00, 0x00, 0x00, 0x00}; |
533 | static const unsigned char Command1[6] = {0x80, 0x16, 0x00, 0x00, 0x00, 0x00}; |
534 | |
535 | unsigned char st[7]; |
536 | int status; |
537 | |
538 | ssleep(1); |
539 | if ((status = card_send_command(ioaddr, name, Command0, st))) |
540 | return status; |
541 | if ((status = card_send_command(ioaddr, name, Command1, st))) |
542 | return status; |
543 | if (st[3] != 0xf1) { |
544 | if ((status = sb1000_start_get_set_command(ioaddr, name))) |
545 | return status; |
546 | return -EIO; |
547 | } |
548 | udelay(1000); |
549 | return sb1000_start_get_set_command(ioaddr, name); |
550 | } |
551 | |
552 | /* get SB1000 firmware version */ |
553 | static int |
554 | sb1000_get_firmware_version(const int ioaddr[], const char* name, |
555 | unsigned char version[], int do_end) |
556 | { |
557 | static const unsigned char Command0[6] = {0x80, 0x23, 0x00, 0x00, 0x00, 0x00}; |
558 | |
559 | unsigned char st[7]; |
560 | int status; |
561 | |
562 | if ((status = sb1000_start_get_set_command(ioaddr, name))) |
563 | return status; |
564 | if ((status = card_send_command(ioaddr, name, Command0, st))) |
565 | return status; |
566 | if (st[0] != 0xa3) |
567 | return -EIO; |
568 | version[0] = st[1]; |
569 | version[1] = st[2]; |
570 | if (do_end) |
571 | return sb1000_end_get_set_command(ioaddr, name); |
572 | else |
573 | return 0; |
574 | } |
575 | |
576 | /* get SB1000 frequency */ |
577 | static int |
578 | sb1000_get_frequency(const int ioaddr[], const char* name, int* frequency) |
579 | { |
580 | static const unsigned char Command0[6] = {0x80, 0x44, 0x00, 0x00, 0x00, 0x00}; |
581 | |
582 | unsigned char st[7]; |
583 | int status; |
584 | |
585 | udelay(1000); |
586 | if ((status = sb1000_start_get_set_command(ioaddr, name))) |
587 | return status; |
588 | if ((status = card_send_command(ioaddr, name, Command0, st))) |
589 | return status; |
590 | *frequency = ((st[1] << 8 | st[2]) << 8 | st[3]) << 8 | st[4]; |
591 | return sb1000_end_get_set_command(ioaddr, name); |
592 | } |
593 | |
594 | /* set SB1000 frequency */ |
595 | static int |
596 | sb1000_set_frequency(const int ioaddr[], const char* name, int frequency) |
597 | { |
598 | unsigned char st[7]; |
599 | int status; |
600 | unsigned char Command0[6] = {0x80, 0x29, 0x00, 0x00, 0x00, 0x00}; |
601 | |
602 | const int FrequencyLowerLimit = 57000; |
603 | const int FrequencyUpperLimit = 804000; |
604 | |
605 | if (frequency < FrequencyLowerLimit || frequency > FrequencyUpperLimit) { |
606 | printk(KERN_ERR "%s: frequency chosen (%d kHz) is not in the range " |
607 | "[%d,%d] kHz\n", name, frequency, FrequencyLowerLimit, |
608 | FrequencyUpperLimit); |
609 | return -EINVAL; |
610 | } |
611 | udelay(1000); |
612 | if ((status = sb1000_start_get_set_command(ioaddr, name))) |
613 | return status; |
614 | Command0[5] = frequency & 0xff; |
615 | frequency >>= 8; |
616 | Command0[4] = frequency & 0xff; |
617 | frequency >>= 8; |
618 | Command0[3] = frequency & 0xff; |
619 | frequency >>= 8; |
620 | Command0[2] = frequency & 0xff; |
621 | return card_send_command(ioaddr, name, Command0, st); |
622 | } |
623 | |
624 | /* get SB1000 PIDs */ |
625 | static int |
626 | sb1000_get_PIDs(const int ioaddr[], const char* name, short PID[]) |
627 | { |
628 | static const unsigned char Command0[6] = {0x80, 0x40, 0x00, 0x00, 0x00, 0x00}; |
629 | static const unsigned char Command1[6] = {0x80, 0x41, 0x00, 0x00, 0x00, 0x00}; |
630 | static const unsigned char Command2[6] = {0x80, 0x42, 0x00, 0x00, 0x00, 0x00}; |
631 | static const unsigned char Command3[6] = {0x80, 0x43, 0x00, 0x00, 0x00, 0x00}; |
632 | |
633 | unsigned char st[7]; |
634 | int status; |
635 | |
636 | udelay(1000); |
637 | if ((status = sb1000_start_get_set_command(ioaddr, name))) |
638 | return status; |
639 | |
640 | if ((status = card_send_command(ioaddr, name, Command0, st))) |
641 | return status; |
642 | PID[0] = st[1] << 8 | st[2]; |
643 | |
644 | if ((status = card_send_command(ioaddr, name, Command1, st))) |
645 | return status; |
646 | PID[1] = st[1] << 8 | st[2]; |
647 | |
648 | if ((status = card_send_command(ioaddr, name, Command2, st))) |
649 | return status; |
650 | PID[2] = st[1] << 8 | st[2]; |
651 | |
652 | if ((status = card_send_command(ioaddr, name, Command3, st))) |
653 | return status; |
654 | PID[3] = st[1] << 8 | st[2]; |
655 | |
656 | return sb1000_end_get_set_command(ioaddr, name); |
657 | } |
658 | |
659 | /* set SB1000 PIDs */ |
660 | static int |
661 | sb1000_set_PIDs(const int ioaddr[], const char* name, const short PID[]) |
662 | { |
663 | static const unsigned char Command4[6] = {0x80, 0x2e, 0x00, 0x00, 0x00, 0x00}; |
664 | |
665 | unsigned char st[7]; |
666 | short p; |
667 | int status; |
668 | unsigned char Command0[6] = {0x80, 0x31, 0x00, 0x00, 0x00, 0x00}; |
669 | unsigned char Command1[6] = {0x80, 0x32, 0x00, 0x00, 0x00, 0x00}; |
670 | unsigned char Command2[6] = {0x80, 0x33, 0x00, 0x00, 0x00, 0x00}; |
671 | unsigned char Command3[6] = {0x80, 0x34, 0x00, 0x00, 0x00, 0x00}; |
672 | |
673 | udelay(1000); |
674 | if ((status = sb1000_start_get_set_command(ioaddr, name))) |
675 | return status; |
676 | |
677 | p = PID[0]; |
678 | Command0[3] = p & 0xff; |
679 | p >>= 8; |
680 | Command0[2] = p & 0xff; |
681 | if ((status = card_send_command(ioaddr, name, Command0, st))) |
682 | return status; |
683 | |
684 | p = PID[1]; |
685 | Command1[3] = p & 0xff; |
686 | p >>= 8; |
687 | Command1[2] = p & 0xff; |
688 | if ((status = card_send_command(ioaddr, name, Command1, st))) |
689 | return status; |
690 | |
691 | p = PID[2]; |
692 | Command2[3] = p & 0xff; |
693 | p >>= 8; |
694 | Command2[2] = p & 0xff; |
695 | if ((status = card_send_command(ioaddr, name, Command2, st))) |
696 | return status; |
697 | |
698 | p = PID[3]; |
699 | Command3[3] = p & 0xff; |
700 | p >>= 8; |
701 | Command3[2] = p & 0xff; |
702 | if ((status = card_send_command(ioaddr, name, Command3, st))) |
703 | return status; |
704 | |
705 | if ((status = card_send_command(ioaddr, name, Command4, st))) |
706 | return status; |
707 | return sb1000_end_get_set_command(ioaddr, name); |
708 | } |
709 | |
710 | |
711 | static void |
712 | sb1000_print_status_buffer(const char* name, unsigned char st[], |
713 | unsigned char buffer[], int size) |
714 | { |
715 | int i, j, k; |
716 | |
717 | printk(KERN_DEBUG "%s: status: %02x %02x\n", name, st[0], st[1]); |
718 | if (buffer[24] == 0x08 && buffer[25] == 0x00 && buffer[26] == 0x45) { |
719 | printk(KERN_DEBUG "%s: length: %d protocol: %d from: %d.%d.%d.%d:%d " |
720 | "to %d.%d.%d.%d:%d\n", name, buffer[28] << 8 | buffer[29], |
721 | buffer[35], buffer[38], buffer[39], buffer[40], buffer[41], |
722 | buffer[46] << 8 | buffer[47], |
723 | buffer[42], buffer[43], buffer[44], buffer[45], |
724 | buffer[48] << 8 | buffer[49]); |
725 | } else { |
726 | for (i = 0, k = 0; i < (size + 7) / 8; i++) { |
727 | printk(KERN_DEBUG "%s: %s", name, i ? " " : "buffer:"); |
728 | for (j = 0; j < 8 && k < size; j++, k++) |
729 | printk(" %02x", buffer[k]); |
730 | printk("\n"); |
731 | } |
732 | } |
733 | } |
734 | |
735 | /* |
736 | * SB1000 commands for frame rx interrupt |
737 | */ |
738 | /* receive a single frame and assemble datagram |
739 | * (this is the heart of the interrupt routine) |
740 | */ |
741 | static int |
742 | sb1000_rx(struct net_device *dev) |
743 | { |
744 | |
745 | #define FRAMESIZE 184 |
746 | unsigned char st[2], buffer[FRAMESIZE], session_id, frame_id; |
747 | short dlen; |
748 | int ioaddr, ns; |
749 | unsigned int skbsize; |
750 | struct sk_buff *skb; |
751 | struct sb1000_private *lp = netdev_priv(dev); |
752 | struct net_device_stats *stats = &dev->stats; |
753 | |
754 | /* SB1000 frame constants */ |
755 | const int FrameSize = FRAMESIZE; |
756 | const int NewDatagramHeaderSkip = 8; |
757 | const int NewDatagramHeaderSize = NewDatagramHeaderSkip + 18; |
758 | const int NewDatagramDataSize = FrameSize - NewDatagramHeaderSize; |
759 | const int ContDatagramHeaderSkip = 7; |
760 | const int ContDatagramHeaderSize = ContDatagramHeaderSkip + 1; |
761 | const int ContDatagramDataSize = FrameSize - ContDatagramHeaderSize; |
762 | const int TrailerSize = 4; |
763 | |
764 | ioaddr = dev->base_addr; |
765 | |
766 | insw(ioaddr, (unsigned short*) st, 1); |
767 | #ifdef XXXDEBUG |
768 | printk("cm0: received: %02x %02x\n", st[0], st[1]); |
769 | #endif /* XXXDEBUG */ |
770 | lp->rx_frames++; |
771 | |
772 | /* decide if it is a good or bad frame */ |
773 | for (ns = 0; ns < NPIDS; ns++) { |
774 | session_id = lp->rx_session_id[ns]; |
775 | frame_id = lp->rx_frame_id[ns]; |
776 | if (st[0] == session_id) { |
777 | if (st[1] == frame_id || (!frame_id && (st[1] & 0xf0) == 0x30)) { |
778 | goto good_frame; |
779 | } else if ((st[1] & 0xf0) == 0x30 && (st[0] & 0x40)) { |
780 | goto skipped_frame; |
781 | } else { |
782 | goto bad_frame; |
783 | } |
784 | } else if (st[0] == (session_id | 0x40)) { |
785 | if ((st[1] & 0xf0) == 0x30) { |
786 | goto skipped_frame; |
787 | } else { |
788 | goto bad_frame; |
789 | } |
790 | } |
791 | } |
792 | goto bad_frame; |
793 | |
794 | skipped_frame: |
795 | stats->rx_frame_errors++; |
796 | skb = lp->rx_skb[ns]; |
797 | if (sb1000_debug > 1) |
798 | printk(KERN_WARNING "%s: missing frame(s): got %02x %02x " |
799 | "expecting %02x %02x\n", dev->name, st[0], st[1], |
800 | skb ? session_id : session_id | 0x40, frame_id); |
801 | if (skb) { |
802 | dev_kfree_skb(skb); |
803 | skb = NULL; |
804 | } |
805 | |
806 | good_frame: |
807 | lp->rx_frame_id[ns] = 0x30 | ((st[1] + 1) & 0x0f); |
808 | /* new datagram */ |
809 | if (st[0] & 0x40) { |
810 | /* get data length */ |
811 | insw(ioaddr, buffer, NewDatagramHeaderSize / 2); |
812 | #ifdef XXXDEBUG |
813 | printk("cm0: IP identification: %02x%02x fragment offset: %02x%02x\n", buffer[30], buffer[31], buffer[32], buffer[33]); |
814 | #endif /* XXXDEBUG */ |
815 | if (buffer[0] != NewDatagramHeaderSkip) { |
816 | if (sb1000_debug > 1) |
817 | printk(KERN_WARNING "%s: new datagram header skip error: " |
818 | "got %02x expecting %02x\n", dev->name, buffer[0], |
819 | NewDatagramHeaderSkip); |
820 | stats->rx_length_errors++; |
821 | insw(ioaddr, buffer, NewDatagramDataSize / 2); |
822 | goto bad_frame_next; |
823 | } |
824 | dlen = ((buffer[NewDatagramHeaderSkip + 3] & 0x0f) << 8 | |
825 | buffer[NewDatagramHeaderSkip + 4]) - 17; |
826 | if (dlen > SB1000_MRU) { |
827 | if (sb1000_debug > 1) |
828 | printk(KERN_WARNING "%s: datagram length (%d) greater " |
829 | "than MRU (%d)\n", dev->name, dlen, SB1000_MRU); |
830 | stats->rx_length_errors++; |
831 | insw(ioaddr, buffer, NewDatagramDataSize / 2); |
832 | goto bad_frame_next; |
833 | } |
834 | lp->rx_dlen[ns] = dlen; |
835 | /* compute size to allocate for datagram */ |
836 | skbsize = dlen + FrameSize; |
837 | if ((skb = alloc_skb(skbsize, GFP_ATOMIC)) == NULL) { |
838 | if (sb1000_debug > 1) |
839 | printk(KERN_WARNING "%s: can't allocate %d bytes long " |
840 | "skbuff\n", dev->name, skbsize); |
841 | stats->rx_dropped++; |
842 | insw(ioaddr, buffer, NewDatagramDataSize / 2); |
843 | goto dropped_frame; |
844 | } |
845 | skb->dev = dev; |
846 | skb_reset_mac_header(skb); |
847 | skb->protocol = (unsigned short) buffer[NewDatagramHeaderSkip + 16]; |
848 | insw(ioaddr, skb_put(skb, NewDatagramDataSize), |
849 | NewDatagramDataSize / 2); |
850 | lp->rx_skb[ns] = skb; |
851 | } else { |
852 | /* continuation of previous datagram */ |
853 | insw(ioaddr, buffer, ContDatagramHeaderSize / 2); |
854 | if (buffer[0] != ContDatagramHeaderSkip) { |
855 | if (sb1000_debug > 1) |
856 | printk(KERN_WARNING "%s: cont datagram header skip error: " |
857 | "got %02x expecting %02x\n", dev->name, buffer[0], |
858 | ContDatagramHeaderSkip); |
859 | stats->rx_length_errors++; |
860 | insw(ioaddr, buffer, ContDatagramDataSize / 2); |
861 | goto bad_frame_next; |
862 | } |
863 | skb = lp->rx_skb[ns]; |
864 | insw(ioaddr, skb_put(skb, ContDatagramDataSize), |
865 | ContDatagramDataSize / 2); |
866 | dlen = lp->rx_dlen[ns]; |
867 | } |
868 | if (skb->len < dlen + TrailerSize) { |
869 | lp->rx_session_id[ns] &= ~0x40; |
870 | return 0; |
871 | } |
872 | |
873 | /* datagram completed: send to upper level */ |
874 | skb_trim(skb, dlen); |
875 | netif_rx(skb); |
876 | stats->rx_bytes+=dlen; |
877 | stats->rx_packets++; |
878 | lp->rx_skb[ns] = NULL; |
879 | lp->rx_session_id[ns] |= 0x40; |
880 | return 0; |
881 | |
882 | bad_frame: |
883 | insw(ioaddr, buffer, FrameSize / 2); |
884 | if (sb1000_debug > 1) |
885 | printk(KERN_WARNING "%s: frame error: got %02x %02x\n", |
886 | dev->name, st[0], st[1]); |
887 | stats->rx_frame_errors++; |
888 | bad_frame_next: |
889 | if (sb1000_debug > 2) |
890 | sb1000_print_status_buffer(dev->name, st, buffer, FrameSize); |
891 | dropped_frame: |
892 | stats->rx_errors++; |
893 | if (ns < NPIDS) { |
894 | if ((skb = lp->rx_skb[ns])) { |
895 | dev_kfree_skb(skb); |
896 | lp->rx_skb[ns] = NULL; |
897 | } |
898 | lp->rx_session_id[ns] |= 0x40; |
899 | } |
900 | return -1; |
901 | } |
902 | |
903 | static void |
904 | sb1000_error_dpc(struct net_device *dev) |
905 | { |
906 | static const unsigned char Command0[6] = {0x80, 0x26, 0x00, 0x00, 0x00, 0x00}; |
907 | |
908 | char *name; |
909 | unsigned char st[5]; |
910 | int ioaddr[2]; |
911 | struct sb1000_private *lp = netdev_priv(dev); |
912 | const int ErrorDpcCounterInitialize = 200; |
913 | |
914 | ioaddr[0] = dev->base_addr; |
915 | /* mem_start holds the second I/O address */ |
916 | ioaddr[1] = dev->mem_start; |
917 | name = dev->name; |
918 | |
919 | sb1000_wait_for_ready_clear(ioaddr, name); |
920 | sb1000_send_command(ioaddr, name, Command0); |
921 | sb1000_wait_for_ready(ioaddr, name); |
922 | sb1000_read_status(ioaddr, st); |
923 | if (st[1] & 0x10) |
924 | lp->rx_error_dpc_count = ErrorDpcCounterInitialize; |
925 | } |
926 | |
927 | |
928 | /* |
929 | * Linux interface functions |
930 | */ |
931 | static int |
932 | sb1000_open(struct net_device *dev) |
933 | { |
934 | char *name; |
935 | int ioaddr[2], status; |
936 | struct sb1000_private *lp = netdev_priv(dev); |
937 | const unsigned short FirmwareVersion[] = {0x01, 0x01}; |
938 | |
939 | ioaddr[0] = dev->base_addr; |
940 | /* mem_start holds the second I/O address */ |
941 | ioaddr[1] = dev->mem_start; |
942 | name = dev->name; |
943 | |
944 | /* initialize sb1000 */ |
945 | if ((status = sb1000_reset(ioaddr, name))) |
946 | return status; |
947 | ssleep(1); |
948 | if ((status = sb1000_check_CRC(ioaddr, name))) |
949 | return status; |
950 | |
951 | /* initialize private data before board can catch interrupts */ |
952 | lp->rx_skb[0] = NULL; |
953 | lp->rx_skb[1] = NULL; |
954 | lp->rx_skb[2] = NULL; |
955 | lp->rx_skb[3] = NULL; |
956 | lp->rx_dlen[0] = 0; |
957 | lp->rx_dlen[1] = 0; |
958 | lp->rx_dlen[2] = 0; |
959 | lp->rx_dlen[3] = 0; |
960 | lp->rx_frames = 0; |
961 | lp->rx_error_count = 0; |
962 | lp->rx_error_dpc_count = 0; |
963 | lp->rx_session_id[0] = 0x50; |
964 | lp->rx_session_id[1] = 0x48; |
965 | lp->rx_session_id[2] = 0x44; |
966 | lp->rx_session_id[3] = 0x42; |
967 | lp->rx_frame_id[0] = 0; |
968 | lp->rx_frame_id[1] = 0; |
969 | lp->rx_frame_id[2] = 0; |
970 | lp->rx_frame_id[3] = 0; |
971 | if (request_irq(dev->irq, sb1000_interrupt, 0, "sb1000", dev)) { |
972 | return -EAGAIN; |
973 | } |
974 | |
975 | if (sb1000_debug > 2) |
976 | printk(KERN_DEBUG "%s: Opening, IRQ %d\n", name, dev->irq); |
977 | |
978 | /* Activate board and check firmware version */ |
979 | udelay(1000); |
980 | if ((status = sb1000_activate(ioaddr, name))) |
981 | return status; |
982 | udelay(0); |
983 | if ((status = sb1000_get_firmware_version(ioaddr, name, version, 0))) |
984 | return status; |
985 | if (version[0] != FirmwareVersion[0] || version[1] != FirmwareVersion[1]) |
986 | printk(KERN_WARNING "%s: found firmware version %x.%02x " |
987 | "(should be %x.%02x)\n", name, version[0], version[1], |
988 | FirmwareVersion[0], FirmwareVersion[1]); |
989 | |
990 | |
991 | netif_start_queue(dev); |
992 | return 0; /* Always succeed */ |
993 | } |
994 | |
995 | static int sb1000_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) |
996 | { |
997 | char* name; |
998 | unsigned char version[2]; |
999 | short PID[4]; |
1000 | int ioaddr[2], status, frequency; |
1001 | unsigned int stats[5]; |
1002 | struct sb1000_private *lp = netdev_priv(dev); |
1003 | |
1004 | if (!(dev && dev->flags & IFF_UP)) |
1005 | return -ENODEV; |
1006 | |
1007 | ioaddr[0] = dev->base_addr; |
1008 | /* mem_start holds the second I/O address */ |
1009 | ioaddr[1] = dev->mem_start; |
1010 | name = dev->name; |
1011 | |
1012 | switch (cmd) { |
1013 | case SIOCGCMSTATS: /* get statistics */ |
1014 | stats[0] = dev->stats.rx_bytes; |
1015 | stats[1] = lp->rx_frames; |
1016 | stats[2] = dev->stats.rx_packets; |
1017 | stats[3] = dev->stats.rx_errors; |
1018 | stats[4] = dev->stats.rx_dropped; |
1019 | if(copy_to_user(ifr->ifr_data, stats, sizeof(stats))) |
1020 | return -EFAULT; |
1021 | status = 0; |
1022 | break; |
1023 | |
1024 | case SIOCGCMFIRMWARE: /* get firmware version */ |
1025 | if ((status = sb1000_get_firmware_version(ioaddr, name, version, 1))) |
1026 | return status; |
1027 | if(copy_to_user(ifr->ifr_data, version, sizeof(version))) |
1028 | return -EFAULT; |
1029 | break; |
1030 | |
1031 | case SIOCGCMFREQUENCY: /* get frequency */ |
1032 | if ((status = sb1000_get_frequency(ioaddr, name, &frequency))) |
1033 | return status; |
1034 | if(put_user(frequency, (int __user *) ifr->ifr_data)) |
1035 | return -EFAULT; |
1036 | break; |
1037 | |
1038 | case SIOCSCMFREQUENCY: /* set frequency */ |
1039 | if (!capable(CAP_NET_ADMIN)) |
1040 | return -EPERM; |
1041 | if(get_user(frequency, (int __user *) ifr->ifr_data)) |
1042 | return -EFAULT; |
1043 | if ((status = sb1000_set_frequency(ioaddr, name, frequency))) |
1044 | return status; |
1045 | break; |
1046 | |
1047 | case SIOCGCMPIDS: /* get PIDs */ |
1048 | if ((status = sb1000_get_PIDs(ioaddr, name, PID))) |
1049 | return status; |
1050 | if(copy_to_user(ifr->ifr_data, PID, sizeof(PID))) |
1051 | return -EFAULT; |
1052 | break; |
1053 | |
1054 | case SIOCSCMPIDS: /* set PIDs */ |
1055 | if (!capable(CAP_NET_ADMIN)) |
1056 | return -EPERM; |
1057 | if(copy_from_user(PID, ifr->ifr_data, sizeof(PID))) |
1058 | return -EFAULT; |
1059 | if ((status = sb1000_set_PIDs(ioaddr, name, PID))) |
1060 | return status; |
1061 | /* set session_id, frame_id and pkt_type too */ |
1062 | lp->rx_session_id[0] = 0x50 | (PID[0] & 0x0f); |
1063 | lp->rx_session_id[1] = 0x48; |
1064 | lp->rx_session_id[2] = 0x44; |
1065 | lp->rx_session_id[3] = 0x42; |
1066 | lp->rx_frame_id[0] = 0; |
1067 | lp->rx_frame_id[1] = 0; |
1068 | lp->rx_frame_id[2] = 0; |
1069 | lp->rx_frame_id[3] = 0; |
1070 | break; |
1071 | |
1072 | default: |
1073 | status = -EINVAL; |
1074 | break; |
1075 | } |
1076 | return status; |
1077 | } |
1078 | |
1079 | /* transmit function: do nothing since SB1000 can't send anything out */ |
1080 | static netdev_tx_t |
1081 | sb1000_start_xmit(struct sk_buff *skb, struct net_device *dev) |
1082 | { |
1083 | printk(KERN_WARNING "%s: trying to transmit!!!\n", dev->name); |
1084 | /* sb1000 can't xmit datagrams */ |
1085 | dev_kfree_skb(skb); |
1086 | return NETDEV_TX_OK; |
1087 | } |
1088 | |
1089 | /* SB1000 interrupt handler. */ |
1090 | static irqreturn_t sb1000_interrupt(int irq, void *dev_id) |
1091 | { |
1092 | static const unsigned char Command0[6] = {0x80, 0x2c, 0x00, 0x00, 0x00, 0x00}; |
1093 | static const unsigned char Command1[6] = {0x80, 0x2e, 0x00, 0x00, 0x00, 0x00}; |
1094 | |
1095 | char *name; |
1096 | unsigned char st; |
1097 | int ioaddr[2]; |
1098 | struct net_device *dev = dev_id; |
1099 | struct sb1000_private *lp = netdev_priv(dev); |
1100 | |
1101 | const int MaxRxErrorCount = 6; |
1102 | |
1103 | ioaddr[0] = dev->base_addr; |
1104 | /* mem_start holds the second I/O address */ |
1105 | ioaddr[1] = dev->mem_start; |
1106 | name = dev->name; |
1107 | |
1108 | /* is it a good interrupt? */ |
1109 | st = inb(ioaddr[1] + 6); |
1110 | if (!(st & 0x08 && st & 0x20)) { |
1111 | return IRQ_NONE; |
1112 | } |
1113 | |
1114 | if (sb1000_debug > 3) |
1115 | printk(KERN_DEBUG "%s: entering interrupt\n", dev->name); |
1116 | |
1117 | st = inb(ioaddr[0] + 7); |
1118 | if (sb1000_rx(dev)) |
1119 | lp->rx_error_count++; |
1120 | #ifdef SB1000_DELAY |
1121 | udelay(SB1000_DELAY); |
1122 | #endif /* SB1000_DELAY */ |
1123 | sb1000_issue_read_command(ioaddr, name); |
1124 | if (st & 0x01) { |
1125 | sb1000_error_dpc(dev); |
1126 | sb1000_issue_read_command(ioaddr, name); |
1127 | } |
1128 | if (lp->rx_error_dpc_count && !(--lp->rx_error_dpc_count)) { |
1129 | sb1000_wait_for_ready_clear(ioaddr, name); |
1130 | sb1000_send_command(ioaddr, name, Command0); |
1131 | sb1000_wait_for_ready(ioaddr, name); |
1132 | sb1000_issue_read_command(ioaddr, name); |
1133 | } |
1134 | if (lp->rx_error_count >= MaxRxErrorCount) { |
1135 | sb1000_wait_for_ready_clear(ioaddr, name); |
1136 | sb1000_send_command(ioaddr, name, Command1); |
1137 | sb1000_wait_for_ready(ioaddr, name); |
1138 | sb1000_issue_read_command(ioaddr, name); |
1139 | lp->rx_error_count = 0; |
1140 | } |
1141 | |
1142 | return IRQ_HANDLED; |
1143 | } |
1144 | |
1145 | static int sb1000_close(struct net_device *dev) |
1146 | { |
1147 | int i; |
1148 | int ioaddr[2]; |
1149 | struct sb1000_private *lp = netdev_priv(dev); |
1150 | |
1151 | if (sb1000_debug > 2) |
1152 | printk(KERN_DEBUG "%s: Shutting down sb1000.\n", dev->name); |
1153 | |
1154 | netif_stop_queue(dev); |
1155 | |
1156 | ioaddr[0] = dev->base_addr; |
1157 | /* mem_start holds the second I/O address */ |
1158 | ioaddr[1] = dev->mem_start; |
1159 | |
1160 | free_irq(dev->irq, dev); |
1161 | /* If we don't do this, we can't re-insmod it later. */ |
1162 | release_region(ioaddr[1], SB1000_IO_EXTENT); |
1163 | release_region(ioaddr[0], SB1000_IO_EXTENT); |
1164 | |
1165 | /* free rx_skb's if needed */ |
1166 | for (i=0; i<4; i++) { |
1167 | if (lp->rx_skb[i]) { |
1168 | dev_kfree_skb(lp->rx_skb[i]); |
1169 | } |
1170 | } |
1171 | return 0; |
1172 | } |
1173 | |
1174 | MODULE_AUTHOR("Franco Venturi <fventuri@mediaone.net>"); |
1175 | MODULE_DESCRIPTION("General Instruments SB1000 driver"); |
1176 | MODULE_LICENSE("GPL"); |
1177 | |
1178 | static int __init |
1179 | sb1000_init(void) |
1180 | { |
1181 | return pnp_register_driver(&sb1000_driver); |
1182 | } |
1183 | |
1184 | static void __exit |
1185 | sb1000_exit(void) |
1186 | { |
1187 | pnp_unregister_driver(&sb1000_driver); |
1188 | } |
1189 | |
1190 | module_init(sb1000_init); |
1191 | module_exit(sb1000_exit); |
1192 |
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