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1da177e4 LT |
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/string.h> | |
40 | #include <linux/interrupt.h> | |
41 | #include <linux/errno.h> | |
42 | #include <linux/if_cablemodem.h> /* for SIOGCM/SIOSCM stuff */ | |
43 | #include <linux/in.h> | |
44 | #include <linux/slab.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 | ||
55 | #include <asm/io.h> | |
56 | #include <asm/processor.h> | |
57 | #include <asm/uaccess.h> | |
58 | ||
59 | #ifdef SB1000_DEBUG | |
60 | static int sb1000_debug = SB1000_DEBUG; | |
61 | #else | |
62 | static int sb1000_debug = 1; | |
63 | #endif | |
64 | ||
65 | static const int SB1000_IO_EXTENT = 8; | |
66 | /* SB1000 Maximum Receive Unit */ | |
67 | static const int SB1000_MRU = 1500; /* octects */ | |
68 | ||
69 | #define NPIDS 4 | |
70 | struct sb1000_private { | |
71 | struct sk_buff *rx_skb[NPIDS]; | |
72 | short rx_dlen[NPIDS]; | |
73 | unsigned int rx_frames; | |
74 | short rx_error_count; | |
75 | short rx_error_dpc_count; | |
76 | unsigned char rx_session_id[NPIDS]; | |
77 | unsigned char rx_frame_id[NPIDS]; | |
78 | unsigned char rx_pkt_type[NPIDS]; | |
79 | struct net_device_stats stats; | |
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 int sb1000_start_xmit(struct sk_buff *skb, struct net_device *dev); | |
87 | static irqreturn_t sb1000_interrupt(int irq, void *dev_id, struct pt_regs *regs); | |
88 | static struct net_device_stats *sb1000_stats(struct net_device *dev); | |
89 | static int sb1000_close(struct net_device *dev); | |
90 | ||
91 | ||
92 | /* SB1000 hardware routines to be used during open/configuration phases */ | |
93 | static inline void nicedelay(unsigned long usecs); | |
94 | static inline int card_wait_for_busy_clear(const int ioaddr[], | |
95 | const char* name); | |
96 | static inline int card_wait_for_ready(const int ioaddr[], const char* name, | |
97 | unsigned char in[]); | |
98 | static inline int card_send_command(const int ioaddr[], const char* name, | |
99 | const unsigned char out[], unsigned char in[]); | |
100 | ||
101 | /* SB1000 hardware routines to be used during frame rx interrupt */ | |
102 | static inline int sb1000_wait_for_ready(const int ioaddr[], const char* name); | |
103 | static inline int sb1000_wait_for_ready_clear(const int ioaddr[], | |
104 | const char* name); | |
105 | static inline void sb1000_send_command(const int ioaddr[], const char* name, | |
106 | const unsigned char out[]); | |
107 | static inline void sb1000_read_status(const int ioaddr[], unsigned char in[]); | |
108 | static inline void sb1000_issue_read_command(const int ioaddr[], | |
109 | const char* name); | |
110 | ||
111 | /* SB1000 commands for open/configuration */ | |
112 | static inline int sb1000_reset(const int ioaddr[], const char* name); | |
113 | static inline int sb1000_check_CRC(const int ioaddr[], const char* name); | |
114 | static inline int sb1000_start_get_set_command(const int ioaddr[], | |
115 | const char* name); | |
116 | static inline int sb1000_end_get_set_command(const int ioaddr[], | |
117 | const char* name); | |
118 | static inline int sb1000_activate(const int ioaddr[], const char* name); | |
119 | static int sb1000_get_firmware_version(const int ioaddr[], | |
120 | const char* name, unsigned char version[], int do_end); | |
121 | static int sb1000_get_frequency(const int ioaddr[], const char* name, | |
122 | int* frequency); | |
123 | static int sb1000_set_frequency(const int ioaddr[], const char* name, | |
124 | int frequency); | |
125 | static int sb1000_get_PIDs(const int ioaddr[], const char* name, | |
126 | short PID[]); | |
127 | static int sb1000_set_PIDs(const int ioaddr[], const char* name, | |
128 | const short PID[]); | |
129 | ||
130 | /* SB1000 commands for frame rx interrupt */ | |
131 | static inline int sb1000_rx(struct net_device *dev); | |
132 | static inline void sb1000_error_dpc(struct net_device *dev); | |
133 | ||
134 | static const struct pnp_device_id sb1000_pnp_ids[] = { | |
135 | { "GIC1000", 0 }, | |
136 | { "", 0 } | |
137 | }; | |
138 | MODULE_DEVICE_TABLE(pnp, sb1000_pnp_ids); | |
139 | ||
140 | static int | |
141 | sb1000_probe_one(struct pnp_dev *pdev, const struct pnp_device_id *id) | |
142 | { | |
143 | struct net_device *dev; | |
144 | unsigned short ioaddr[2], irq; | |
145 | unsigned int serial_number; | |
146 | int error = -ENODEV; | |
147 | ||
148 | if (pnp_device_attach(pdev) < 0) | |
149 | return -ENODEV; | |
150 | if (pnp_activate_dev(pdev) < 0) | |
151 | goto out_detach; | |
152 | ||
153 | if (!pnp_port_valid(pdev, 0) || !pnp_port_valid(pdev, 1)) | |
154 | goto out_disable; | |
155 | if (!pnp_irq_valid(pdev, 0)) | |
156 | goto out_disable; | |
157 | ||
158 | serial_number = pdev->card->serial; | |
159 | ||
160 | ioaddr[0] = pnp_port_start(pdev, 0); | |
161 | ioaddr[1] = pnp_port_start(pdev, 0); | |
162 | ||
163 | irq = pnp_irq(pdev, 0); | |
164 | ||
165 | if (!request_region(ioaddr[0], 16, "sb1000")) | |
166 | goto out_disable; | |
167 | if (!request_region(ioaddr[1], 16, "sb1000")) | |
168 | goto out_release_region0; | |
169 | ||
170 | dev = alloc_etherdev(sizeof(struct sb1000_private)); | |
171 | if (!dev) { | |
172 | error = -ENOMEM; | |
173 | goto out_release_regions; | |
174 | } | |
175 | ||
176 | ||
177 | dev->base_addr = ioaddr[0]; | |
178 | /* mem_start holds the second I/O address */ | |
179 | dev->mem_start = ioaddr[1]; | |
180 | dev->irq = irq; | |
181 | ||
182 | if (sb1000_debug > 0) | |
183 | printk(KERN_NOTICE "%s: sb1000 at (%#3.3lx,%#3.3lx), " | |
184 | "S/N %#8.8x, IRQ %d.\n", dev->name, dev->base_addr, | |
185 | dev->mem_start, serial_number, dev->irq); | |
186 | ||
187 | /* | |
188 | * The SB1000 is an rx-only cable modem device. The uplink is a modem | |
189 | * and we do not want to arp on it. | |
190 | */ | |
191 | dev->flags = IFF_POINTOPOINT|IFF_NOARP; | |
192 | ||
193 | SET_MODULE_OWNER(dev); | |
194 | SET_NETDEV_DEV(dev, &pdev->dev); | |
195 | ||
196 | if (sb1000_debug > 0) | |
197 | printk(KERN_NOTICE "%s", version); | |
198 | ||
199 | /* The SB1000-specific entries in the device structure. */ | |
200 | dev->open = sb1000_open; | |
201 | dev->do_ioctl = sb1000_dev_ioctl; | |
202 | dev->hard_start_xmit = sb1000_start_xmit; | |
203 | dev->stop = sb1000_close; | |
204 | dev->get_stats = sb1000_stats; | |
205 | ||
206 | /* hardware address is 0:0:serial_number */ | |
207 | dev->dev_addr[2] = serial_number >> 24 & 0xff; | |
208 | dev->dev_addr[3] = serial_number >> 16 & 0xff; | |
209 | dev->dev_addr[4] = serial_number >> 8 & 0xff; | |
210 | dev->dev_addr[5] = serial_number >> 0 & 0xff; | |
211 | ||
212 | pnp_set_drvdata(pdev, dev); | |
213 | ||
214 | error = register_netdev(dev); | |
215 | if (error) | |
216 | goto out_free_netdev; | |
217 | return 0; | |
218 | ||
219 | out_free_netdev: | |
220 | free_netdev(dev); | |
221 | out_release_regions: | |
222 | release_region(ioaddr[1], 16); | |
223 | out_release_region0: | |
224 | release_region(ioaddr[0], 16); | |
225 | out_disable: | |
226 | pnp_disable_dev(pdev); | |
227 | out_detach: | |
228 | pnp_device_detach(pdev); | |
229 | return error; | |
230 | } | |
231 | ||
232 | static void | |
233 | sb1000_remove_one(struct pnp_dev *pdev) | |
234 | { | |
235 | struct net_device *dev = pnp_get_drvdata(pdev); | |
236 | ||
237 | unregister_netdev(dev); | |
238 | release_region(dev->base_addr, 16); | |
239 | release_region(dev->mem_start, 16); | |
240 | free_netdev(dev); | |
241 | } | |
242 | ||
243 | static struct pnp_driver sb1000_driver = { | |
244 | .name = "sb1000", | |
245 | .id_table = sb1000_pnp_ids, | |
246 | .probe = sb1000_probe_one, | |
247 | .remove = sb1000_remove_one, | |
248 | }; | |
249 | ||
250 | \f | |
251 | /* | |
252 | * SB1000 hardware routines to be used during open/configuration phases | |
253 | */ | |
254 | ||
255 | static const int TimeOutJiffies = (875 * HZ) / 100; | |
256 | ||
257 | static inline void nicedelay(unsigned long usecs) | |
258 | { | |
259 | current->state = TASK_INTERRUPTIBLE; | |
260 | schedule_timeout(HZ); | |
261 | return; | |
262 | } | |
263 | ||
264 | /* Card Wait For Busy Clear (cannot be used during an interrupt) */ | |
265 | static inline int | |
266 | card_wait_for_busy_clear(const int ioaddr[], const char* name) | |
267 | { | |
268 | unsigned char a; | |
269 | unsigned long timeout; | |
270 | ||
271 | a = inb(ioaddr[0] + 7); | |
272 | timeout = jiffies + TimeOutJiffies; | |
273 | while (a & 0x80 || a & 0x40) { | |
274 | /* a little sleep */ | |
275 | yield(); | |
276 | ||
277 | a = inb(ioaddr[0] + 7); | |
278 | if (time_after_eq(jiffies, timeout)) { | |
279 | printk(KERN_WARNING "%s: card_wait_for_busy_clear timeout\n", | |
280 | name); | |
281 | return -ETIME; | |
282 | } | |
283 | } | |
284 | ||
285 | return 0; | |
286 | } | |
287 | ||
288 | /* Card Wait For Ready (cannot be used during an interrupt) */ | |
289 | static inline int | |
290 | card_wait_for_ready(const int ioaddr[], const char* name, unsigned char in[]) | |
291 | { | |
292 | unsigned char a; | |
293 | unsigned long timeout; | |
294 | ||
295 | a = inb(ioaddr[1] + 6); | |
296 | timeout = jiffies + TimeOutJiffies; | |
297 | while (a & 0x80 || !(a & 0x40)) { | |
298 | /* a little sleep */ | |
299 | yield(); | |
300 | ||
301 | a = inb(ioaddr[1] + 6); | |
302 | if (time_after_eq(jiffies, timeout)) { | |
303 | printk(KERN_WARNING "%s: card_wait_for_ready timeout\n", | |
304 | name); | |
305 | return -ETIME; | |
306 | } | |
307 | } | |
308 | ||
309 | in[1] = inb(ioaddr[0] + 1); | |
310 | in[2] = inb(ioaddr[0] + 2); | |
311 | in[3] = inb(ioaddr[0] + 3); | |
312 | in[4] = inb(ioaddr[0] + 4); | |
313 | in[0] = inb(ioaddr[0] + 5); | |
314 | in[6] = inb(ioaddr[0] + 6); | |
315 | in[5] = inb(ioaddr[1] + 6); | |
316 | return 0; | |
317 | } | |
318 | ||
319 | /* Card Send Command (cannot be used during an interrupt) */ | |
320 | static inline int | |
321 | card_send_command(const int ioaddr[], const char* name, | |
322 | const unsigned char out[], unsigned char in[]) | |
323 | { | |
324 | int status, x; | |
325 | ||
326 | if ((status = card_wait_for_busy_clear(ioaddr, name))) | |
327 | return status; | |
328 | outb(0xa0, ioaddr[0] + 6); | |
329 | outb(out[2], ioaddr[0] + 1); | |
330 | outb(out[3], ioaddr[0] + 2); | |
331 | outb(out[4], ioaddr[0] + 3); | |
332 | outb(out[5], ioaddr[0] + 4); | |
333 | outb(out[1], ioaddr[0] + 5); | |
334 | outb(0xa0, ioaddr[0] + 6); | |
335 | outb(out[0], ioaddr[0] + 7); | |
336 | if (out[0] != 0x20 && out[0] != 0x30) { | |
337 | if ((status = card_wait_for_ready(ioaddr, name, in))) | |
338 | return status; | |
339 | inb(ioaddr[0] + 7); | |
340 | if (sb1000_debug > 3) | |
341 | printk(KERN_DEBUG "%s: card_send_command " | |
342 | "out: %02x%02x%02x%02x%02x%02x " | |
343 | "in: %02x%02x%02x%02x%02x%02x%02x\n", name, | |
344 | out[0], out[1], out[2], out[3], out[4], out[5], | |
345 | in[0], in[1], in[2], in[3], in[4], in[5], in[6]); | |
346 | } else { | |
347 | if (sb1000_debug > 3) | |
348 | printk(KERN_DEBUG "%s: card_send_command " | |
349 | "out: %02x%02x%02x%02x%02x%02x\n", name, | |
350 | out[0], out[1], out[2], out[3], out[4], out[5]); | |
351 | } | |
352 | ||
353 | if (out[1] == 0x1b) { | |
354 | x = (out[2] == 0x02); | |
355 | } else { | |
356 | if (out[0] >= 0x80 && in[0] != (out[1] | 0x80)) | |
357 | return -EIO; | |
358 | } | |
359 | return 0; | |
360 | } | |
361 | ||
362 | \f | |
363 | /* | |
364 | * SB1000 hardware routines to be used during frame rx interrupt | |
365 | */ | |
366 | static const int Sb1000TimeOutJiffies = 7 * HZ; | |
367 | ||
368 | /* Card Wait For Ready (to be used during frame rx) */ | |
369 | static inline int | |
370 | sb1000_wait_for_ready(const int ioaddr[], const char* name) | |
371 | { | |
372 | unsigned long timeout; | |
373 | ||
374 | timeout = jiffies + Sb1000TimeOutJiffies; | |
375 | while (inb(ioaddr[1] + 6) & 0x80) { | |
376 | if (time_after_eq(jiffies, timeout)) { | |
377 | printk(KERN_WARNING "%s: sb1000_wait_for_ready timeout\n", | |
378 | name); | |
379 | return -ETIME; | |
380 | } | |
381 | } | |
382 | timeout = jiffies + Sb1000TimeOutJiffies; | |
383 | while (!(inb(ioaddr[1] + 6) & 0x40)) { | |
384 | if (time_after_eq(jiffies, timeout)) { | |
385 | printk(KERN_WARNING "%s: sb1000_wait_for_ready timeout\n", | |
386 | name); | |
387 | return -ETIME; | |
388 | } | |
389 | } | |
390 | inb(ioaddr[0] + 7); | |
391 | return 0; | |
392 | } | |
393 | ||
394 | /* Card Wait For Ready Clear (to be used during frame rx) */ | |
395 | static inline int | |
396 | sb1000_wait_for_ready_clear(const int ioaddr[], const char* name) | |
397 | { | |
398 | unsigned long timeout; | |
399 | ||
400 | timeout = jiffies + Sb1000TimeOutJiffies; | |
401 | while (inb(ioaddr[1] + 6) & 0x80) { | |
402 | if (time_after_eq(jiffies, timeout)) { | |
403 | printk(KERN_WARNING "%s: sb1000_wait_for_ready_clear timeout\n", | |
404 | name); | |
405 | return -ETIME; | |
406 | } | |
407 | } | |
408 | timeout = jiffies + Sb1000TimeOutJiffies; | |
409 | while (inb(ioaddr[1] + 6) & 0x40) { | |
410 | if (time_after_eq(jiffies, timeout)) { | |
411 | printk(KERN_WARNING "%s: sb1000_wait_for_ready_clear timeout\n", | |
412 | name); | |
413 | return -ETIME; | |
414 | } | |
415 | } | |
416 | return 0; | |
417 | } | |
418 | ||
419 | /* Card Send Command (to be used during frame rx) */ | |
420 | static inline void | |
421 | sb1000_send_command(const int ioaddr[], const char* name, | |
422 | const unsigned char out[]) | |
423 | { | |
424 | outb(out[2], ioaddr[0] + 1); | |
425 | outb(out[3], ioaddr[0] + 2); | |
426 | outb(out[4], ioaddr[0] + 3); | |
427 | outb(out[5], ioaddr[0] + 4); | |
428 | outb(out[1], ioaddr[0] + 5); | |
429 | outb(out[0], ioaddr[0] + 7); | |
430 | if (sb1000_debug > 3) | |
431 | printk(KERN_DEBUG "%s: sb1000_send_command out: %02x%02x%02x%02x" | |
432 | "%02x%02x\n", name, out[0], out[1], out[2], out[3], out[4], out[5]); | |
433 | return; | |
434 | } | |
435 | ||
436 | /* Card Read Status (to be used during frame rx) */ | |
437 | static inline void | |
438 | sb1000_read_status(const int ioaddr[], unsigned char in[]) | |
439 | { | |
440 | in[1] = inb(ioaddr[0] + 1); | |
441 | in[2] = inb(ioaddr[0] + 2); | |
442 | in[3] = inb(ioaddr[0] + 3); | |
443 | in[4] = inb(ioaddr[0] + 4); | |
444 | in[0] = inb(ioaddr[0] + 5); | |
445 | return; | |
446 | } | |
447 | ||
448 | /* Issue Read Command (to be used during frame rx) */ | |
449 | static inline void | |
450 | sb1000_issue_read_command(const int ioaddr[], const char* name) | |
451 | { | |
452 | const unsigned char Command0[6] = {0x20, 0x00, 0x00, 0x01, 0x00, 0x00}; | |
453 | ||
454 | sb1000_wait_for_ready_clear(ioaddr, name); | |
455 | outb(0xa0, ioaddr[0] + 6); | |
456 | sb1000_send_command(ioaddr, name, Command0); | |
457 | return; | |
458 | } | |
459 | ||
460 | \f | |
461 | /* | |
462 | * SB1000 commands for open/configuration | |
463 | */ | |
464 | /* reset SB1000 card */ | |
465 | static inline int | |
466 | sb1000_reset(const int ioaddr[], const char* name) | |
467 | { | |
468 | unsigned char st[7]; | |
469 | int port, status; | |
470 | const unsigned char Command0[6] = {0x80, 0x16, 0x00, 0x00, 0x00, 0x00}; | |
471 | ||
472 | port = ioaddr[1] + 6; | |
473 | outb(0x4, port); | |
474 | inb(port); | |
475 | udelay(1000); | |
476 | outb(0x0, port); | |
477 | inb(port); | |
478 | nicedelay(60000); | |
479 | outb(0x4, port); | |
480 | inb(port); | |
481 | udelay(1000); | |
482 | outb(0x0, port); | |
483 | inb(port); | |
484 | udelay(0); | |
485 | ||
486 | if ((status = card_send_command(ioaddr, name, Command0, st))) | |
487 | return status; | |
488 | if (st[3] != 0xf0) | |
489 | return -EIO; | |
490 | return 0; | |
491 | } | |
492 | ||
493 | /* check SB1000 firmware CRC */ | |
494 | static inline int | |
495 | sb1000_check_CRC(const int ioaddr[], const char* name) | |
496 | { | |
497 | unsigned char st[7]; | |
498 | int crc, status; | |
499 | const unsigned char Command0[6] = {0x80, 0x1f, 0x00, 0x00, 0x00, 0x00}; | |
500 | ||
501 | /* check CRC */ | |
502 | if ((status = card_send_command(ioaddr, name, Command0, st))) | |
503 | return status; | |
504 | if (st[1] != st[3] || st[2] != st[4]) | |
505 | return -EIO; | |
506 | crc = st[1] << 8 | st[2]; | |
507 | return 0; | |
508 | } | |
509 | ||
510 | static inline int | |
511 | sb1000_start_get_set_command(const int ioaddr[], const char* name) | |
512 | { | |
513 | unsigned char st[7]; | |
514 | const unsigned char Command0[6] = {0x80, 0x1b, 0x00, 0x00, 0x00, 0x00}; | |
515 | ||
516 | return card_send_command(ioaddr, name, Command0, st); | |
517 | } | |
518 | ||
519 | static inline int | |
520 | sb1000_end_get_set_command(const int ioaddr[], const char* name) | |
521 | { | |
522 | unsigned char st[7]; | |
523 | int status; | |
524 | const unsigned char Command0[6] = {0x80, 0x1b, 0x02, 0x00, 0x00, 0x00}; | |
525 | const unsigned char Command1[6] = {0x20, 0x00, 0x00, 0x00, 0x00, 0x00}; | |
526 | ||
527 | if ((status = card_send_command(ioaddr, name, Command0, st))) | |
528 | return status; | |
529 | return card_send_command(ioaddr, name, Command1, st); | |
530 | } | |
531 | ||
532 | static inline int | |
533 | sb1000_activate(const int ioaddr[], const char* name) | |
534 | { | |
535 | unsigned char st[7]; | |
536 | int status; | |
537 | const unsigned char Command0[6] = {0x80, 0x11, 0x00, 0x00, 0x00, 0x00}; | |
538 | const unsigned char Command1[6] = {0x80, 0x16, 0x00, 0x00, 0x00, 0x00}; | |
539 | ||
540 | nicedelay(50000); | |
541 | if ((status = card_send_command(ioaddr, name, Command0, st))) | |
542 | return status; | |
543 | if ((status = card_send_command(ioaddr, name, Command1, st))) | |
544 | return status; | |
545 | if (st[3] != 0xf1) { | |
546 | if ((status = sb1000_start_get_set_command(ioaddr, name))) | |
547 | return status; | |
548 | return -EIO; | |
549 | } | |
550 | udelay(1000); | |
551 | return sb1000_start_get_set_command(ioaddr, name); | |
552 | } | |
553 | ||
554 | /* get SB1000 firmware version */ | |
555 | static int | |
556 | sb1000_get_firmware_version(const int ioaddr[], const char* name, | |
557 | unsigned char version[], int do_end) | |
558 | { | |
559 | unsigned char st[7]; | |
560 | int status; | |
561 | const unsigned char Command0[6] = {0x80, 0x23, 0x00, 0x00, 0x00, 0x00}; | |
562 | ||
563 | if ((status = sb1000_start_get_set_command(ioaddr, name))) | |
564 | return status; | |
565 | if ((status = card_send_command(ioaddr, name, Command0, st))) | |
566 | return status; | |
567 | if (st[0] != 0xa3) | |
568 | return -EIO; | |
569 | version[0] = st[1]; | |
570 | version[1] = st[2]; | |
571 | if (do_end) | |
572 | return sb1000_end_get_set_command(ioaddr, name); | |
573 | else | |
574 | return 0; | |
575 | } | |
576 | ||
577 | /* get SB1000 frequency */ | |
578 | static int | |
579 | sb1000_get_frequency(const int ioaddr[], const char* name, int* frequency) | |
580 | { | |
581 | unsigned char st[7]; | |
582 | int status; | |
583 | const unsigned char Command0[6] = {0x80, 0x44, 0x00, 0x00, 0x00, 0x00}; | |
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 | unsigned char st[7]; | |
629 | int status; | |
630 | const unsigned char Command0[6] = {0x80, 0x40, 0x00, 0x00, 0x00, 0x00}; | |
631 | const unsigned char Command1[6] = {0x80, 0x41, 0x00, 0x00, 0x00, 0x00}; | |
632 | const unsigned char Command2[6] = {0x80, 0x42, 0x00, 0x00, 0x00, 0x00}; | |
633 | const unsigned char Command3[6] = {0x80, 0x43, 0x00, 0x00, 0x00, 0x00}; | |
634 | ||
635 | udelay(1000); | |
636 | if ((status = sb1000_start_get_set_command(ioaddr, name))) | |
637 | return status; | |
638 | ||
639 | if ((status = card_send_command(ioaddr, name, Command0, st))) | |
640 | return status; | |
641 | PID[0] = st[1] << 8 | st[2]; | |
642 | ||
643 | if ((status = card_send_command(ioaddr, name, Command1, st))) | |
644 | return status; | |
645 | PID[1] = st[1] << 8 | st[2]; | |
646 | ||
647 | if ((status = card_send_command(ioaddr, name, Command2, st))) | |
648 | return status; | |
649 | PID[2] = st[1] << 8 | st[2]; | |
650 | ||
651 | if ((status = card_send_command(ioaddr, name, Command3, st))) | |
652 | return status; | |
653 | PID[3] = st[1] << 8 | st[2]; | |
654 | ||
655 | return sb1000_end_get_set_command(ioaddr, name); | |
656 | } | |
657 | ||
658 | /* set SB1000 PIDs */ | |
659 | static int | |
660 | sb1000_set_PIDs(const int ioaddr[], const char* name, const short PID[]) | |
661 | { | |
662 | unsigned char st[7]; | |
663 | short p; | |
664 | int status; | |
665 | unsigned char Command0[6] = {0x80, 0x31, 0x00, 0x00, 0x00, 0x00}; | |
666 | unsigned char Command1[6] = {0x80, 0x32, 0x00, 0x00, 0x00, 0x00}; | |
667 | unsigned char Command2[6] = {0x80, 0x33, 0x00, 0x00, 0x00, 0x00}; | |
668 | unsigned char Command3[6] = {0x80, 0x34, 0x00, 0x00, 0x00, 0x00}; | |
669 | const unsigned char Command4[6] = {0x80, 0x2e, 0x00, 0x00, 0x00, 0x00}; | |
670 | ||
671 | udelay(1000); | |
672 | if ((status = sb1000_start_get_set_command(ioaddr, name))) | |
673 | return status; | |
674 | ||
675 | p = PID[0]; | |
676 | Command0[3] = p & 0xff; | |
677 | p >>= 8; | |
678 | Command0[2] = p & 0xff; | |
679 | if ((status = card_send_command(ioaddr, name, Command0, st))) | |
680 | return status; | |
681 | ||
682 | p = PID[1]; | |
683 | Command1[3] = p & 0xff; | |
684 | p >>= 8; | |
685 | Command1[2] = p & 0xff; | |
686 | if ((status = card_send_command(ioaddr, name, Command1, st))) | |
687 | return status; | |
688 | ||
689 | p = PID[2]; | |
690 | Command2[3] = p & 0xff; | |
691 | p >>= 8; | |
692 | Command2[2] = p & 0xff; | |
693 | if ((status = card_send_command(ioaddr, name, Command2, st))) | |
694 | return status; | |
695 | ||
696 | p = PID[3]; | |
697 | Command3[3] = p & 0xff; | |
698 | p >>= 8; | |
699 | Command3[2] = p & 0xff; | |
700 | if ((status = card_send_command(ioaddr, name, Command3, st))) | |
701 | return status; | |
702 | ||
703 | if ((status = card_send_command(ioaddr, name, Command4, st))) | |
704 | return status; | |
705 | return sb1000_end_get_set_command(ioaddr, name); | |
706 | } | |
707 | ||
708 | \f | |
709 | static inline void | |
710 | sb1000_print_status_buffer(const char* name, unsigned char st[], | |
711 | unsigned char buffer[], int size) | |
712 | { | |
713 | int i, j, k; | |
714 | ||
715 | printk(KERN_DEBUG "%s: status: %02x %02x\n", name, st[0], st[1]); | |
716 | if (buffer[24] == 0x08 && buffer[25] == 0x00 && buffer[26] == 0x45) { | |
717 | printk(KERN_DEBUG "%s: length: %d protocol: %d from: %d.%d.%d.%d:%d " | |
718 | "to %d.%d.%d.%d:%d\n", name, buffer[28] << 8 | buffer[29], | |
719 | buffer[35], buffer[38], buffer[39], buffer[40], buffer[41], | |
720 | buffer[46] << 8 | buffer[47], | |
721 | buffer[42], buffer[43], buffer[44], buffer[45], | |
722 | buffer[48] << 8 | buffer[49]); | |
723 | } else { | |
724 | for (i = 0, k = 0; i < (size + 7) / 8; i++) { | |
725 | printk(KERN_DEBUG "%s: %s", name, i ? " " : "buffer:"); | |
726 | for (j = 0; j < 8 && k < size; j++, k++) | |
727 | printk(" %02x", buffer[k]); | |
728 | printk("\n"); | |
729 | } | |
730 | } | |
731 | return; | |
732 | } | |
733 | ||
734 | /* | |
735 | * SB1000 commands for frame rx interrupt | |
736 | */ | |
737 | /* receive a single frame and assemble datagram | |
738 | * (this is the heart of the interrupt routine) | |
739 | */ | |
740 | static inline int | |
741 | sb1000_rx(struct net_device *dev) | |
742 | { | |
743 | ||
744 | #define FRAMESIZE 184 | |
745 | unsigned char st[2], buffer[FRAMESIZE], session_id, frame_id; | |
746 | short dlen; | |
747 | int ioaddr, ns; | |
748 | unsigned int skbsize; | |
749 | struct sk_buff *skb; | |
750 | struct sb1000_private *lp = netdev_priv(dev); | |
751 | struct net_device_stats *stats = &lp->stats; | |
752 | ||
753 | /* SB1000 frame constants */ | |
754 | const int FrameSize = FRAMESIZE; | |
755 | const int NewDatagramHeaderSkip = 8; | |
756 | const int NewDatagramHeaderSize = NewDatagramHeaderSkip + 18; | |
757 | const int NewDatagramDataSize = FrameSize - NewDatagramHeaderSize; | |
758 | const int ContDatagramHeaderSkip = 7; | |
759 | const int ContDatagramHeaderSize = ContDatagramHeaderSkip + 1; | |
760 | const int ContDatagramDataSize = FrameSize - ContDatagramHeaderSize; | |
761 | const int TrailerSize = 4; | |
762 | ||
763 | ioaddr = dev->base_addr; | |
764 | ||
765 | insw(ioaddr, (unsigned short*) st, 1); | |
766 | #ifdef XXXDEBUG | |
767 | printk("cm0: received: %02x %02x\n", st[0], st[1]); | |
768 | #endif /* XXXDEBUG */ | |
769 | lp->rx_frames++; | |
770 | ||
771 | /* decide if it is a good or bad frame */ | |
772 | for (ns = 0; ns < NPIDS; ns++) { | |
773 | session_id = lp->rx_session_id[ns]; | |
774 | frame_id = lp->rx_frame_id[ns]; | |
775 | if (st[0] == session_id) { | |
776 | if (st[1] == frame_id || (!frame_id && (st[1] & 0xf0) == 0x30)) { | |
777 | goto good_frame; | |
778 | } else if ((st[1] & 0xf0) == 0x30 && (st[0] & 0x40)) { | |
779 | goto skipped_frame; | |
780 | } else { | |
781 | goto bad_frame; | |
782 | } | |
783 | } else if (st[0] == (session_id | 0x40)) { | |
784 | if ((st[1] & 0xf0) == 0x30) { | |
785 | goto skipped_frame; | |
786 | } else { | |
787 | goto bad_frame; | |
788 | } | |
789 | } | |
790 | } | |
791 | goto bad_frame; | |
792 | ||
793 | skipped_frame: | |
794 | stats->rx_frame_errors++; | |
795 | skb = lp->rx_skb[ns]; | |
796 | if (sb1000_debug > 1) | |
797 | printk(KERN_WARNING "%s: missing frame(s): got %02x %02x " | |
798 | "expecting %02x %02x\n", dev->name, st[0], st[1], | |
799 | skb ? session_id : session_id | 0x40, frame_id); | |
800 | if (skb) { | |
801 | dev_kfree_skb(skb); | |
802 | skb = NULL; | |
803 | } | |
804 | ||
805 | good_frame: | |
806 | lp->rx_frame_id[ns] = 0x30 | ((st[1] + 1) & 0x0f); | |
807 | /* new datagram */ | |
808 | if (st[0] & 0x40) { | |
809 | /* get data length */ | |
810 | insw(ioaddr, buffer, NewDatagramHeaderSize / 2); | |
811 | #ifdef XXXDEBUG | |
812 | printk("cm0: IP identification: %02x%02x fragment offset: %02x%02x\n", buffer[30], buffer[31], buffer[32], buffer[33]); | |
813 | #endif /* XXXDEBUG */ | |
814 | if (buffer[0] != NewDatagramHeaderSkip) { | |
815 | if (sb1000_debug > 1) | |
816 | printk(KERN_WARNING "%s: new datagram header skip error: " | |
817 | "got %02x expecting %02x\n", dev->name, buffer[0], | |
818 | NewDatagramHeaderSkip); | |
819 | stats->rx_length_errors++; | |
820 | insw(ioaddr, buffer, NewDatagramDataSize / 2); | |
821 | goto bad_frame_next; | |
822 | } | |
823 | dlen = ((buffer[NewDatagramHeaderSkip + 3] & 0x0f) << 8 | | |
824 | buffer[NewDatagramHeaderSkip + 4]) - 17; | |
825 | if (dlen > SB1000_MRU) { | |
826 | if (sb1000_debug > 1) | |
827 | printk(KERN_WARNING "%s: datagram length (%d) greater " | |
828 | "than MRU (%d)\n", dev->name, dlen, SB1000_MRU); | |
829 | stats->rx_length_errors++; | |
830 | insw(ioaddr, buffer, NewDatagramDataSize / 2); | |
831 | goto bad_frame_next; | |
832 | } | |
833 | lp->rx_dlen[ns] = dlen; | |
834 | /* compute size to allocate for datagram */ | |
835 | skbsize = dlen + FrameSize; | |
836 | if ((skb = alloc_skb(skbsize, GFP_ATOMIC)) == NULL) { | |
837 | if (sb1000_debug > 1) | |
838 | printk(KERN_WARNING "%s: can't allocate %d bytes long " | |
839 | "skbuff\n", dev->name, skbsize); | |
840 | stats->rx_dropped++; | |
841 | insw(ioaddr, buffer, NewDatagramDataSize / 2); | |
842 | goto dropped_frame; | |
843 | } | |
844 | skb->dev = dev; | |
845 | skb->mac.raw = skb->data; | |
846 | skb->protocol = (unsigned short) buffer[NewDatagramHeaderSkip + 16]; | |
847 | insw(ioaddr, skb_put(skb, NewDatagramDataSize), | |
848 | NewDatagramDataSize / 2); | |
849 | lp->rx_skb[ns] = skb; | |
850 | } else { | |
851 | /* continuation of previous datagram */ | |
852 | insw(ioaddr, buffer, ContDatagramHeaderSize / 2); | |
853 | if (buffer[0] != ContDatagramHeaderSkip) { | |
854 | if (sb1000_debug > 1) | |
855 | printk(KERN_WARNING "%s: cont datagram header skip error: " | |
856 | "got %02x expecting %02x\n", dev->name, buffer[0], | |
857 | ContDatagramHeaderSkip); | |
858 | stats->rx_length_errors++; | |
859 | insw(ioaddr, buffer, ContDatagramDataSize / 2); | |
860 | goto bad_frame_next; | |
861 | } | |
862 | skb = lp->rx_skb[ns]; | |
863 | insw(ioaddr, skb_put(skb, ContDatagramDataSize), | |
864 | ContDatagramDataSize / 2); | |
865 | dlen = lp->rx_dlen[ns]; | |
866 | } | |
867 | if (skb->len < dlen + TrailerSize) { | |
868 | lp->rx_session_id[ns] &= ~0x40; | |
869 | return 0; | |
870 | } | |
871 | ||
872 | /* datagram completed: send to upper level */ | |
873 | skb_trim(skb, dlen); | |
874 | netif_rx(skb); | |
875 | dev->last_rx = jiffies; | |
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 inline void | |
904 | sb1000_error_dpc(struct net_device *dev) | |
905 | { | |
906 | char *name; | |
907 | unsigned char st[5]; | |
908 | int ioaddr[2]; | |
909 | struct sb1000_private *lp = netdev_priv(dev); | |
910 | const unsigned char Command0[6] = {0x80, 0x26, 0x00, 0x00, 0x00, 0x00}; | |
911 | const int ErrorDpcCounterInitialize = 200; | |
912 | ||
913 | ioaddr[0] = dev->base_addr; | |
914 | /* mem_start holds the second I/O address */ | |
915 | ioaddr[1] = dev->mem_start; | |
916 | name = dev->name; | |
917 | ||
918 | sb1000_wait_for_ready_clear(ioaddr, name); | |
919 | sb1000_send_command(ioaddr, name, Command0); | |
920 | sb1000_wait_for_ready(ioaddr, name); | |
921 | sb1000_read_status(ioaddr, st); | |
922 | if (st[1] & 0x10) | |
923 | lp->rx_error_dpc_count = ErrorDpcCounterInitialize; | |
924 | return; | |
925 | } | |
926 | ||
927 | \f | |
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 | nicedelay(200000); | |
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[0] = 0x48; | |
965 | lp->rx_session_id[0] = 0x44; | |
966 | lp->rx_session_id[0] = 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] = lp->stats.rx_bytes; | |
1015 | stats[1] = lp->rx_frames; | |
1016 | stats[2] = lp->stats.rx_packets; | |
1017 | stats[3] = lp->stats.rx_errors; | |
1018 | stats[4] = lp->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 int | |
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 0; | |
1087 | } | |
1088 | ||
1089 | /* SB1000 interrupt handler. */ | |
1090 | static irqreturn_t sb1000_interrupt(int irq, void *dev_id, struct pt_regs *regs) | |
1091 | { | |
1092 | char *name; | |
1093 | unsigned char st; | |
1094 | int ioaddr[2]; | |
1095 | struct net_device *dev = (struct net_device *) dev_id; | |
1096 | struct sb1000_private *lp = netdev_priv(dev); | |
1097 | ||
1098 | const unsigned char Command0[6] = {0x80, 0x2c, 0x00, 0x00, 0x00, 0x00}; | |
1099 | const unsigned char Command1[6] = {0x80, 0x2e, 0x00, 0x00, 0x00, 0x00}; | |
1100 | const int MaxRxErrorCount = 6; | |
1101 | ||
1102 | if (dev == NULL) { | |
1103 | printk(KERN_ERR "sb1000_interrupt(): irq %d for unknown device.\n", | |
1104 | irq); | |
1105 | return IRQ_NONE; | |
1106 | } | |
1107 | ||
1108 | ioaddr[0] = dev->base_addr; | |
1109 | /* mem_start holds the second I/O address */ | |
1110 | ioaddr[1] = dev->mem_start; | |
1111 | name = dev->name; | |
1112 | ||
1113 | /* is it a good interrupt? */ | |
1114 | st = inb(ioaddr[1] + 6); | |
1115 | if (!(st & 0x08 && st & 0x20)) { | |
1116 | return IRQ_NONE; | |
1117 | } | |
1118 | ||
1119 | if (sb1000_debug > 3) | |
1120 | printk(KERN_DEBUG "%s: entering interrupt\n", dev->name); | |
1121 | ||
1122 | st = inb(ioaddr[0] + 7); | |
1123 | if (sb1000_rx(dev)) | |
1124 | lp->rx_error_count++; | |
1125 | #ifdef SB1000_DELAY | |
1126 | udelay(SB1000_DELAY); | |
1127 | #endif /* SB1000_DELAY */ | |
1128 | sb1000_issue_read_command(ioaddr, name); | |
1129 | if (st & 0x01) { | |
1130 | sb1000_error_dpc(dev); | |
1131 | sb1000_issue_read_command(ioaddr, name); | |
1132 | } | |
1133 | if (lp->rx_error_dpc_count && !(--lp->rx_error_dpc_count)) { | |
1134 | sb1000_wait_for_ready_clear(ioaddr, name); | |
1135 | sb1000_send_command(ioaddr, name, Command0); | |
1136 | sb1000_wait_for_ready(ioaddr, name); | |
1137 | sb1000_issue_read_command(ioaddr, name); | |
1138 | } | |
1139 | if (lp->rx_error_count >= MaxRxErrorCount) { | |
1140 | sb1000_wait_for_ready_clear(ioaddr, name); | |
1141 | sb1000_send_command(ioaddr, name, Command1); | |
1142 | sb1000_wait_for_ready(ioaddr, name); | |
1143 | sb1000_issue_read_command(ioaddr, name); | |
1144 | lp->rx_error_count = 0; | |
1145 | } | |
1146 | ||
1147 | return IRQ_HANDLED; | |
1148 | } | |
1149 | ||
1150 | static struct net_device_stats *sb1000_stats(struct net_device *dev) | |
1151 | { | |
1152 | struct sb1000_private *lp = netdev_priv(dev); | |
1153 | return &lp->stats; | |
1154 | } | |
1155 | ||
1156 | static int sb1000_close(struct net_device *dev) | |
1157 | { | |
1158 | int i; | |
1159 | int ioaddr[2]; | |
1160 | struct sb1000_private *lp = netdev_priv(dev); | |
1161 | ||
1162 | if (sb1000_debug > 2) | |
1163 | printk(KERN_DEBUG "%s: Shutting down sb1000.\n", dev->name); | |
1164 | ||
1165 | netif_stop_queue(dev); | |
1166 | ||
1167 | ioaddr[0] = dev->base_addr; | |
1168 | /* mem_start holds the second I/O address */ | |
1169 | ioaddr[1] = dev->mem_start; | |
1170 | ||
1171 | free_irq(dev->irq, dev); | |
1172 | /* If we don't do this, we can't re-insmod it later. */ | |
1173 | release_region(ioaddr[1], SB1000_IO_EXTENT); | |
1174 | release_region(ioaddr[0], SB1000_IO_EXTENT); | |
1175 | ||
1176 | /* free rx_skb's if needed */ | |
1177 | for (i=0; i<4; i++) { | |
1178 | if (lp->rx_skb[i]) { | |
1179 | dev_kfree_skb(lp->rx_skb[i]); | |
1180 | } | |
1181 | } | |
1182 | return 0; | |
1183 | } | |
1184 | ||
1185 | MODULE_AUTHOR("Franco Venturi <fventuri@mediaone.net>"); | |
1186 | MODULE_DESCRIPTION("General Instruments SB1000 driver"); | |
1187 | MODULE_LICENSE("GPL"); | |
1188 | ||
1189 | static int __init | |
1190 | sb1000_init(void) | |
1191 | { | |
1192 | return pnp_register_driver(&sb1000_driver); | |
1193 | } | |
1194 | ||
1195 | static void __exit | |
1196 | sb1000_exit(void) | |
1197 | { | |
1198 | pnp_unregister_driver(&sb1000_driver); | |
1199 | } | |
1200 | ||
1201 | module_init(sb1000_init); | |
1202 | module_exit(sb1000_exit); |