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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. | |
6aa20a22 | 31 | |
1da177e4 LT |
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 | |
f71e1309 | 62 | static const int sb1000_debug = 1; |
1da177e4 LT |
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); | |
7d12e780 | 87 | static irqreturn_t sb1000_interrupt(int irq, void *dev_id); |
1da177e4 LT |
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 */ | |
1da177e4 LT |
93 | static inline int card_wait_for_busy_clear(const int ioaddr[], |
94 | const char* name); | |
95 | static inline int card_wait_for_ready(const int ioaddr[], const char* name, | |
96 | unsigned char in[]); | |
858119e1 | 97 | static int card_send_command(const int ioaddr[], const char* name, |
1da177e4 LT |
98 | const unsigned char out[], unsigned char in[]); |
99 | ||
100 | /* SB1000 hardware routines to be used during frame rx interrupt */ | |
101 | static inline int sb1000_wait_for_ready(const int ioaddr[], const char* name); | |
102 | static inline int sb1000_wait_for_ready_clear(const int ioaddr[], | |
103 | const char* name); | |
104 | static inline void sb1000_send_command(const int ioaddr[], const char* name, | |
105 | const unsigned char out[]); | |
106 | static inline void sb1000_read_status(const int ioaddr[], unsigned char in[]); | |
107 | static inline void sb1000_issue_read_command(const int ioaddr[], | |
108 | const char* name); | |
109 | ||
110 | /* SB1000 commands for open/configuration */ | |
111 | static inline int sb1000_reset(const int ioaddr[], const char* name); | |
112 | static inline 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 inline int sb1000_end_get_set_command(const int ioaddr[], | |
116 | const char* name); | |
117 | static inline 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 inline int sb1000_rx(struct net_device *dev); | |
131 | static inline 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 int | |
140 | sb1000_probe_one(struct pnp_dev *pdev, const struct pnp_device_id *id) | |
141 | { | |
142 | struct net_device *dev; | |
143 | unsigned short ioaddr[2], irq; | |
144 | unsigned int serial_number; | |
145 | int error = -ENODEV; | |
6aa20a22 | 146 | |
1da177e4 LT |
147 | if (pnp_device_attach(pdev) < 0) |
148 | return -ENODEV; | |
149 | if (pnp_activate_dev(pdev) < 0) | |
150 | goto out_detach; | |
151 | ||
152 | if (!pnp_port_valid(pdev, 0) || !pnp_port_valid(pdev, 1)) | |
153 | goto out_disable; | |
154 | if (!pnp_irq_valid(pdev, 0)) | |
155 | goto out_disable; | |
6aa20a22 | 156 | |
1da177e4 | 157 | serial_number = pdev->card->serial; |
6aa20a22 | 158 | |
1da177e4 LT |
159 | ioaddr[0] = pnp_port_start(pdev, 0); |
160 | ioaddr[1] = pnp_port_start(pdev, 0); | |
6aa20a22 | 161 | |
1da177e4 LT |
162 | irq = pnp_irq(pdev, 0); |
163 | ||
164 | if (!request_region(ioaddr[0], 16, "sb1000")) | |
165 | goto out_disable; | |
166 | if (!request_region(ioaddr[1], 16, "sb1000")) | |
167 | goto out_release_region0; | |
168 | ||
169 | dev = alloc_etherdev(sizeof(struct sb1000_private)); | |
170 | if (!dev) { | |
171 | error = -ENOMEM; | |
172 | goto out_release_regions; | |
173 | } | |
174 | ||
6aa20a22 | 175 | |
1da177e4 LT |
176 | dev->base_addr = ioaddr[0]; |
177 | /* mem_start holds the second I/O address */ | |
178 | dev->mem_start = ioaddr[1]; | |
179 | dev->irq = irq; | |
180 | ||
181 | if (sb1000_debug > 0) | |
182 | printk(KERN_NOTICE "%s: sb1000 at (%#3.3lx,%#3.3lx), " | |
183 | "S/N %#8.8x, IRQ %d.\n", dev->name, dev->base_addr, | |
184 | dev->mem_start, serial_number, dev->irq); | |
185 | ||
186 | /* | |
187 | * The SB1000 is an rx-only cable modem device. The uplink is a modem | |
188 | * and we do not want to arp on it. | |
189 | */ | |
190 | dev->flags = IFF_POINTOPOINT|IFF_NOARP; | |
191 | ||
1da177e4 LT |
192 | SET_NETDEV_DEV(dev, &pdev->dev); |
193 | ||
194 | if (sb1000_debug > 0) | |
195 | printk(KERN_NOTICE "%s", version); | |
196 | ||
197 | /* The SB1000-specific entries in the device structure. */ | |
198 | dev->open = sb1000_open; | |
199 | dev->do_ioctl = sb1000_dev_ioctl; | |
200 | dev->hard_start_xmit = sb1000_start_xmit; | |
201 | dev->stop = sb1000_close; | |
202 | dev->get_stats = sb1000_stats; | |
203 | ||
204 | /* hardware address is 0:0:serial_number */ | |
205 | dev->dev_addr[2] = serial_number >> 24 & 0xff; | |
206 | dev->dev_addr[3] = serial_number >> 16 & 0xff; | |
207 | dev->dev_addr[4] = serial_number >> 8 & 0xff; | |
208 | dev->dev_addr[5] = serial_number >> 0 & 0xff; | |
209 | ||
210 | pnp_set_drvdata(pdev, dev); | |
211 | ||
212 | error = register_netdev(dev); | |
213 | if (error) | |
214 | goto out_free_netdev; | |
215 | return 0; | |
216 | ||
217 | out_free_netdev: | |
218 | free_netdev(dev); | |
219 | out_release_regions: | |
220 | release_region(ioaddr[1], 16); | |
221 | out_release_region0: | |
222 | release_region(ioaddr[0], 16); | |
223 | out_disable: | |
224 | pnp_disable_dev(pdev); | |
225 | out_detach: | |
226 | pnp_device_detach(pdev); | |
227 | return error; | |
228 | } | |
229 | ||
230 | static void | |
231 | sb1000_remove_one(struct pnp_dev *pdev) | |
232 | { | |
233 | struct net_device *dev = pnp_get_drvdata(pdev); | |
234 | ||
235 | unregister_netdev(dev); | |
236 | release_region(dev->base_addr, 16); | |
237 | release_region(dev->mem_start, 16); | |
238 | free_netdev(dev); | |
239 | } | |
240 | ||
241 | static struct pnp_driver sb1000_driver = { | |
242 | .name = "sb1000", | |
243 | .id_table = sb1000_pnp_ids, | |
244 | .probe = sb1000_probe_one, | |
245 | .remove = sb1000_remove_one, | |
246 | }; | |
247 | ||
6aa20a22 | 248 | |
1da177e4 LT |
249 | /* |
250 | * SB1000 hardware routines to be used during open/configuration phases | |
251 | */ | |
252 | ||
253 | static const int TimeOutJiffies = (875 * HZ) / 100; | |
254 | ||
1da177e4 LT |
255 | /* Card Wait For Busy Clear (cannot be used during an interrupt) */ |
256 | static inline int | |
257 | card_wait_for_busy_clear(const int ioaddr[], const char* name) | |
258 | { | |
259 | unsigned char a; | |
260 | unsigned long timeout; | |
261 | ||
262 | a = inb(ioaddr[0] + 7); | |
263 | timeout = jiffies + TimeOutJiffies; | |
264 | while (a & 0x80 || a & 0x40) { | |
265 | /* a little sleep */ | |
266 | yield(); | |
267 | ||
268 | a = inb(ioaddr[0] + 7); | |
269 | if (time_after_eq(jiffies, timeout)) { | |
270 | printk(KERN_WARNING "%s: card_wait_for_busy_clear timeout\n", | |
271 | name); | |
272 | return -ETIME; | |
273 | } | |
274 | } | |
275 | ||
276 | return 0; | |
277 | } | |
278 | ||
279 | /* Card Wait For Ready (cannot be used during an interrupt) */ | |
280 | static inline int | |
281 | card_wait_for_ready(const int ioaddr[], const char* name, unsigned char in[]) | |
282 | { | |
283 | unsigned char a; | |
284 | unsigned long timeout; | |
285 | ||
286 | a = inb(ioaddr[1] + 6); | |
287 | timeout = jiffies + TimeOutJiffies; | |
288 | while (a & 0x80 || !(a & 0x40)) { | |
289 | /* a little sleep */ | |
290 | yield(); | |
291 | ||
292 | a = inb(ioaddr[1] + 6); | |
293 | if (time_after_eq(jiffies, timeout)) { | |
294 | printk(KERN_WARNING "%s: card_wait_for_ready timeout\n", | |
295 | name); | |
296 | return -ETIME; | |
297 | } | |
298 | } | |
299 | ||
300 | in[1] = inb(ioaddr[0] + 1); | |
301 | in[2] = inb(ioaddr[0] + 2); | |
302 | in[3] = inb(ioaddr[0] + 3); | |
303 | in[4] = inb(ioaddr[0] + 4); | |
304 | in[0] = inb(ioaddr[0] + 5); | |
305 | in[6] = inb(ioaddr[0] + 6); | |
306 | in[5] = inb(ioaddr[1] + 6); | |
307 | return 0; | |
308 | } | |
309 | ||
310 | /* Card Send Command (cannot be used during an interrupt) */ | |
858119e1 | 311 | static int |
1da177e4 LT |
312 | card_send_command(const int ioaddr[], const char* name, |
313 | const unsigned char out[], unsigned char in[]) | |
314 | { | |
315 | int status, x; | |
316 | ||
317 | if ((status = card_wait_for_busy_clear(ioaddr, name))) | |
318 | return status; | |
319 | outb(0xa0, ioaddr[0] + 6); | |
320 | outb(out[2], ioaddr[0] + 1); | |
321 | outb(out[3], ioaddr[0] + 2); | |
322 | outb(out[4], ioaddr[0] + 3); | |
323 | outb(out[5], ioaddr[0] + 4); | |
324 | outb(out[1], ioaddr[0] + 5); | |
325 | outb(0xa0, ioaddr[0] + 6); | |
326 | outb(out[0], ioaddr[0] + 7); | |
327 | if (out[0] != 0x20 && out[0] != 0x30) { | |
328 | if ((status = card_wait_for_ready(ioaddr, name, in))) | |
329 | return status; | |
330 | inb(ioaddr[0] + 7); | |
331 | if (sb1000_debug > 3) | |
332 | printk(KERN_DEBUG "%s: card_send_command " | |
333 | "out: %02x%02x%02x%02x%02x%02x " | |
334 | "in: %02x%02x%02x%02x%02x%02x%02x\n", name, | |
335 | out[0], out[1], out[2], out[3], out[4], out[5], | |
336 | in[0], in[1], in[2], in[3], in[4], in[5], in[6]); | |
337 | } else { | |
338 | if (sb1000_debug > 3) | |
339 | printk(KERN_DEBUG "%s: card_send_command " | |
340 | "out: %02x%02x%02x%02x%02x%02x\n", name, | |
341 | out[0], out[1], out[2], out[3], out[4], out[5]); | |
342 | } | |
343 | ||
344 | if (out[1] == 0x1b) { | |
345 | x = (out[2] == 0x02); | |
346 | } else { | |
347 | if (out[0] >= 0x80 && in[0] != (out[1] | 0x80)) | |
348 | return -EIO; | |
349 | } | |
350 | return 0; | |
351 | } | |
352 | ||
6aa20a22 | 353 | |
1da177e4 LT |
354 | /* |
355 | * SB1000 hardware routines to be used during frame rx interrupt | |
356 | */ | |
357 | static const int Sb1000TimeOutJiffies = 7 * HZ; | |
358 | ||
359 | /* Card Wait For Ready (to be used during frame rx) */ | |
360 | static inline int | |
361 | sb1000_wait_for_ready(const int ioaddr[], const char* name) | |
362 | { | |
363 | unsigned long timeout; | |
364 | ||
365 | timeout = jiffies + Sb1000TimeOutJiffies; | |
366 | while (inb(ioaddr[1] + 6) & 0x80) { | |
367 | if (time_after_eq(jiffies, timeout)) { | |
368 | printk(KERN_WARNING "%s: sb1000_wait_for_ready timeout\n", | |
369 | name); | |
370 | return -ETIME; | |
371 | } | |
372 | } | |
373 | timeout = jiffies + Sb1000TimeOutJiffies; | |
374 | while (!(inb(ioaddr[1] + 6) & 0x40)) { | |
375 | if (time_after_eq(jiffies, timeout)) { | |
376 | printk(KERN_WARNING "%s: sb1000_wait_for_ready timeout\n", | |
377 | name); | |
378 | return -ETIME; | |
379 | } | |
380 | } | |
381 | inb(ioaddr[0] + 7); | |
382 | return 0; | |
383 | } | |
384 | ||
385 | /* Card Wait For Ready Clear (to be used during frame rx) */ | |
386 | static inline int | |
387 | sb1000_wait_for_ready_clear(const int ioaddr[], const char* name) | |
388 | { | |
389 | unsigned long timeout; | |
390 | ||
391 | timeout = jiffies + Sb1000TimeOutJiffies; | |
392 | while (inb(ioaddr[1] + 6) & 0x80) { | |
393 | if (time_after_eq(jiffies, timeout)) { | |
394 | printk(KERN_WARNING "%s: sb1000_wait_for_ready_clear timeout\n", | |
395 | name); | |
396 | return -ETIME; | |
397 | } | |
398 | } | |
399 | timeout = jiffies + Sb1000TimeOutJiffies; | |
400 | while (inb(ioaddr[1] + 6) & 0x40) { | |
401 | if (time_after_eq(jiffies, timeout)) { | |
402 | printk(KERN_WARNING "%s: sb1000_wait_for_ready_clear timeout\n", | |
403 | name); | |
404 | return -ETIME; | |
405 | } | |
406 | } | |
407 | return 0; | |
408 | } | |
409 | ||
410 | /* Card Send Command (to be used during frame rx) */ | |
411 | static inline void | |
412 | sb1000_send_command(const int ioaddr[], const char* name, | |
413 | const unsigned char out[]) | |
414 | { | |
415 | outb(out[2], ioaddr[0] + 1); | |
416 | outb(out[3], ioaddr[0] + 2); | |
417 | outb(out[4], ioaddr[0] + 3); | |
418 | outb(out[5], ioaddr[0] + 4); | |
419 | outb(out[1], ioaddr[0] + 5); | |
420 | outb(out[0], ioaddr[0] + 7); | |
421 | if (sb1000_debug > 3) | |
422 | printk(KERN_DEBUG "%s: sb1000_send_command out: %02x%02x%02x%02x" | |
423 | "%02x%02x\n", name, out[0], out[1], out[2], out[3], out[4], out[5]); | |
424 | return; | |
425 | } | |
426 | ||
427 | /* Card Read Status (to be used during frame rx) */ | |
428 | static inline void | |
429 | sb1000_read_status(const int ioaddr[], unsigned char in[]) | |
430 | { | |
431 | in[1] = inb(ioaddr[0] + 1); | |
432 | in[2] = inb(ioaddr[0] + 2); | |
433 | in[3] = inb(ioaddr[0] + 3); | |
434 | in[4] = inb(ioaddr[0] + 4); | |
435 | in[0] = inb(ioaddr[0] + 5); | |
436 | return; | |
437 | } | |
438 | ||
439 | /* Issue Read Command (to be used during frame rx) */ | |
440 | static inline void | |
441 | sb1000_issue_read_command(const int ioaddr[], const char* name) | |
442 | { | |
443 | const unsigned char Command0[6] = {0x20, 0x00, 0x00, 0x01, 0x00, 0x00}; | |
444 | ||
445 | sb1000_wait_for_ready_clear(ioaddr, name); | |
446 | outb(0xa0, ioaddr[0] + 6); | |
447 | sb1000_send_command(ioaddr, name, Command0); | |
448 | return; | |
449 | } | |
450 | ||
6aa20a22 | 451 | |
1da177e4 LT |
452 | /* |
453 | * SB1000 commands for open/configuration | |
454 | */ | |
455 | /* reset SB1000 card */ | |
456 | static inline int | |
457 | sb1000_reset(const int ioaddr[], const char* name) | |
458 | { | |
459 | unsigned char st[7]; | |
460 | int port, status; | |
461 | const unsigned char Command0[6] = {0x80, 0x16, 0x00, 0x00, 0x00, 0x00}; | |
462 | ||
463 | port = ioaddr[1] + 6; | |
464 | outb(0x4, port); | |
465 | inb(port); | |
466 | udelay(1000); | |
467 | outb(0x0, port); | |
468 | inb(port); | |
a26c074c | 469 | ssleep(1); |
1da177e4 LT |
470 | outb(0x4, port); |
471 | inb(port); | |
472 | udelay(1000); | |
473 | outb(0x0, port); | |
474 | inb(port); | |
475 | udelay(0); | |
476 | ||
477 | if ((status = card_send_command(ioaddr, name, Command0, st))) | |
478 | return status; | |
479 | if (st[3] != 0xf0) | |
480 | return -EIO; | |
481 | return 0; | |
482 | } | |
483 | ||
484 | /* check SB1000 firmware CRC */ | |
485 | static inline int | |
486 | sb1000_check_CRC(const int ioaddr[], const char* name) | |
487 | { | |
488 | unsigned char st[7]; | |
489 | int crc, status; | |
490 | const unsigned char Command0[6] = {0x80, 0x1f, 0x00, 0x00, 0x00, 0x00}; | |
491 | ||
492 | /* check CRC */ | |
493 | if ((status = card_send_command(ioaddr, name, Command0, st))) | |
494 | return status; | |
495 | if (st[1] != st[3] || st[2] != st[4]) | |
496 | return -EIO; | |
497 | crc = st[1] << 8 | st[2]; | |
498 | return 0; | |
499 | } | |
500 | ||
501 | static inline int | |
502 | sb1000_start_get_set_command(const int ioaddr[], const char* name) | |
503 | { | |
504 | unsigned char st[7]; | |
505 | const unsigned char Command0[6] = {0x80, 0x1b, 0x00, 0x00, 0x00, 0x00}; | |
506 | ||
507 | return card_send_command(ioaddr, name, Command0, st); | |
508 | } | |
509 | ||
510 | static inline int | |
511 | sb1000_end_get_set_command(const int ioaddr[], const char* name) | |
512 | { | |
513 | unsigned char st[7]; | |
514 | int status; | |
515 | const unsigned char Command0[6] = {0x80, 0x1b, 0x02, 0x00, 0x00, 0x00}; | |
516 | const unsigned char Command1[6] = {0x20, 0x00, 0x00, 0x00, 0x00, 0x00}; | |
517 | ||
518 | if ((status = card_send_command(ioaddr, name, Command0, st))) | |
519 | return status; | |
520 | return card_send_command(ioaddr, name, Command1, st); | |
521 | } | |
522 | ||
523 | static inline int | |
524 | sb1000_activate(const int ioaddr[], const char* name) | |
525 | { | |
526 | unsigned char st[7]; | |
527 | int status; | |
528 | const unsigned char Command0[6] = {0x80, 0x11, 0x00, 0x00, 0x00, 0x00}; | |
529 | const unsigned char Command1[6] = {0x80, 0x16, 0x00, 0x00, 0x00, 0x00}; | |
530 | ||
a26c074c | 531 | ssleep(1); |
1da177e4 LT |
532 | if ((status = card_send_command(ioaddr, name, Command0, st))) |
533 | return status; | |
534 | if ((status = card_send_command(ioaddr, name, Command1, st))) | |
535 | return status; | |
536 | if (st[3] != 0xf1) { | |
537 | if ((status = sb1000_start_get_set_command(ioaddr, name))) | |
538 | return status; | |
539 | return -EIO; | |
540 | } | |
541 | udelay(1000); | |
542 | return sb1000_start_get_set_command(ioaddr, name); | |
543 | } | |
544 | ||
545 | /* get SB1000 firmware version */ | |
546 | static int | |
547 | sb1000_get_firmware_version(const int ioaddr[], const char* name, | |
548 | unsigned char version[], int do_end) | |
549 | { | |
550 | unsigned char st[7]; | |
551 | int status; | |
552 | const unsigned char Command0[6] = {0x80, 0x23, 0x00, 0x00, 0x00, 0x00}; | |
553 | ||
554 | if ((status = sb1000_start_get_set_command(ioaddr, name))) | |
555 | return status; | |
556 | if ((status = card_send_command(ioaddr, name, Command0, st))) | |
557 | return status; | |
558 | if (st[0] != 0xa3) | |
559 | return -EIO; | |
560 | version[0] = st[1]; | |
561 | version[1] = st[2]; | |
562 | if (do_end) | |
563 | return sb1000_end_get_set_command(ioaddr, name); | |
564 | else | |
565 | return 0; | |
566 | } | |
567 | ||
568 | /* get SB1000 frequency */ | |
569 | static int | |
570 | sb1000_get_frequency(const int ioaddr[], const char* name, int* frequency) | |
571 | { | |
572 | unsigned char st[7]; | |
573 | int status; | |
574 | const unsigned char Command0[6] = {0x80, 0x44, 0x00, 0x00, 0x00, 0x00}; | |
575 | ||
576 | udelay(1000); | |
577 | if ((status = sb1000_start_get_set_command(ioaddr, name))) | |
578 | return status; | |
579 | if ((status = card_send_command(ioaddr, name, Command0, st))) | |
580 | return status; | |
581 | *frequency = ((st[1] << 8 | st[2]) << 8 | st[3]) << 8 | st[4]; | |
582 | return sb1000_end_get_set_command(ioaddr, name); | |
583 | } | |
584 | ||
585 | /* set SB1000 frequency */ | |
586 | static int | |
587 | sb1000_set_frequency(const int ioaddr[], const char* name, int frequency) | |
588 | { | |
589 | unsigned char st[7]; | |
590 | int status; | |
591 | unsigned char Command0[6] = {0x80, 0x29, 0x00, 0x00, 0x00, 0x00}; | |
592 | ||
593 | const int FrequencyLowerLimit = 57000; | |
594 | const int FrequencyUpperLimit = 804000; | |
595 | ||
596 | if (frequency < FrequencyLowerLimit || frequency > FrequencyUpperLimit) { | |
597 | printk(KERN_ERR "%s: frequency chosen (%d kHz) is not in the range " | |
598 | "[%d,%d] kHz\n", name, frequency, FrequencyLowerLimit, | |
599 | FrequencyUpperLimit); | |
600 | return -EINVAL; | |
601 | } | |
602 | udelay(1000); | |
603 | if ((status = sb1000_start_get_set_command(ioaddr, name))) | |
604 | return status; | |
605 | Command0[5] = frequency & 0xff; | |
606 | frequency >>= 8; | |
607 | Command0[4] = frequency & 0xff; | |
608 | frequency >>= 8; | |
609 | Command0[3] = frequency & 0xff; | |
610 | frequency >>= 8; | |
611 | Command0[2] = frequency & 0xff; | |
612 | return card_send_command(ioaddr, name, Command0, st); | |
613 | } | |
614 | ||
615 | /* get SB1000 PIDs */ | |
616 | static int | |
617 | sb1000_get_PIDs(const int ioaddr[], const char* name, short PID[]) | |
618 | { | |
619 | unsigned char st[7]; | |
620 | int status; | |
621 | const unsigned char Command0[6] = {0x80, 0x40, 0x00, 0x00, 0x00, 0x00}; | |
622 | const unsigned char Command1[6] = {0x80, 0x41, 0x00, 0x00, 0x00, 0x00}; | |
623 | const unsigned char Command2[6] = {0x80, 0x42, 0x00, 0x00, 0x00, 0x00}; | |
624 | const unsigned char Command3[6] = {0x80, 0x43, 0x00, 0x00, 0x00, 0x00}; | |
625 | ||
626 | udelay(1000); | |
627 | if ((status = sb1000_start_get_set_command(ioaddr, name))) | |
628 | return status; | |
629 | ||
630 | if ((status = card_send_command(ioaddr, name, Command0, st))) | |
631 | return status; | |
632 | PID[0] = st[1] << 8 | st[2]; | |
633 | ||
634 | if ((status = card_send_command(ioaddr, name, Command1, st))) | |
635 | return status; | |
636 | PID[1] = st[1] << 8 | st[2]; | |
637 | ||
638 | if ((status = card_send_command(ioaddr, name, Command2, st))) | |
639 | return status; | |
640 | PID[2] = st[1] << 8 | st[2]; | |
641 | ||
642 | if ((status = card_send_command(ioaddr, name, Command3, st))) | |
643 | return status; | |
644 | PID[3] = st[1] << 8 | st[2]; | |
645 | ||
646 | return sb1000_end_get_set_command(ioaddr, name); | |
647 | } | |
648 | ||
649 | /* set SB1000 PIDs */ | |
650 | static int | |
651 | sb1000_set_PIDs(const int ioaddr[], const char* name, const short PID[]) | |
652 | { | |
653 | unsigned char st[7]; | |
654 | short p; | |
655 | int status; | |
656 | unsigned char Command0[6] = {0x80, 0x31, 0x00, 0x00, 0x00, 0x00}; | |
657 | unsigned char Command1[6] = {0x80, 0x32, 0x00, 0x00, 0x00, 0x00}; | |
658 | unsigned char Command2[6] = {0x80, 0x33, 0x00, 0x00, 0x00, 0x00}; | |
659 | unsigned char Command3[6] = {0x80, 0x34, 0x00, 0x00, 0x00, 0x00}; | |
660 | const unsigned char Command4[6] = {0x80, 0x2e, 0x00, 0x00, 0x00, 0x00}; | |
661 | ||
662 | udelay(1000); | |
663 | if ((status = sb1000_start_get_set_command(ioaddr, name))) | |
664 | return status; | |
665 | ||
666 | p = PID[0]; | |
667 | Command0[3] = p & 0xff; | |
668 | p >>= 8; | |
669 | Command0[2] = p & 0xff; | |
670 | if ((status = card_send_command(ioaddr, name, Command0, st))) | |
671 | return status; | |
672 | ||
673 | p = PID[1]; | |
674 | Command1[3] = p & 0xff; | |
675 | p >>= 8; | |
676 | Command1[2] = p & 0xff; | |
677 | if ((status = card_send_command(ioaddr, name, Command1, st))) | |
678 | return status; | |
679 | ||
680 | p = PID[2]; | |
681 | Command2[3] = p & 0xff; | |
682 | p >>= 8; | |
683 | Command2[2] = p & 0xff; | |
684 | if ((status = card_send_command(ioaddr, name, Command2, st))) | |
685 | return status; | |
686 | ||
687 | p = PID[3]; | |
688 | Command3[3] = p & 0xff; | |
689 | p >>= 8; | |
690 | Command3[2] = p & 0xff; | |
691 | if ((status = card_send_command(ioaddr, name, Command3, st))) | |
692 | return status; | |
693 | ||
694 | if ((status = card_send_command(ioaddr, name, Command4, st))) | |
695 | return status; | |
696 | return sb1000_end_get_set_command(ioaddr, name); | |
697 | } | |
698 | ||
6aa20a22 | 699 | |
1da177e4 LT |
700 | static inline void |
701 | sb1000_print_status_buffer(const char* name, unsigned char st[], | |
702 | unsigned char buffer[], int size) | |
703 | { | |
704 | int i, j, k; | |
705 | ||
706 | printk(KERN_DEBUG "%s: status: %02x %02x\n", name, st[0], st[1]); | |
707 | if (buffer[24] == 0x08 && buffer[25] == 0x00 && buffer[26] == 0x45) { | |
708 | printk(KERN_DEBUG "%s: length: %d protocol: %d from: %d.%d.%d.%d:%d " | |
709 | "to %d.%d.%d.%d:%d\n", name, buffer[28] << 8 | buffer[29], | |
710 | buffer[35], buffer[38], buffer[39], buffer[40], buffer[41], | |
711 | buffer[46] << 8 | buffer[47], | |
712 | buffer[42], buffer[43], buffer[44], buffer[45], | |
713 | buffer[48] << 8 | buffer[49]); | |
714 | } else { | |
715 | for (i = 0, k = 0; i < (size + 7) / 8; i++) { | |
716 | printk(KERN_DEBUG "%s: %s", name, i ? " " : "buffer:"); | |
717 | for (j = 0; j < 8 && k < size; j++, k++) | |
718 | printk(" %02x", buffer[k]); | |
719 | printk("\n"); | |
720 | } | |
721 | } | |
722 | return; | |
723 | } | |
724 | ||
725 | /* | |
726 | * SB1000 commands for frame rx interrupt | |
727 | */ | |
728 | /* receive a single frame and assemble datagram | |
729 | * (this is the heart of the interrupt routine) | |
730 | */ | |
731 | static inline int | |
732 | sb1000_rx(struct net_device *dev) | |
733 | { | |
734 | ||
735 | #define FRAMESIZE 184 | |
736 | unsigned char st[2], buffer[FRAMESIZE], session_id, frame_id; | |
737 | short dlen; | |
738 | int ioaddr, ns; | |
739 | unsigned int skbsize; | |
740 | struct sk_buff *skb; | |
741 | struct sb1000_private *lp = netdev_priv(dev); | |
742 | struct net_device_stats *stats = &lp->stats; | |
743 | ||
744 | /* SB1000 frame constants */ | |
745 | const int FrameSize = FRAMESIZE; | |
746 | const int NewDatagramHeaderSkip = 8; | |
747 | const int NewDatagramHeaderSize = NewDatagramHeaderSkip + 18; | |
748 | const int NewDatagramDataSize = FrameSize - NewDatagramHeaderSize; | |
749 | const int ContDatagramHeaderSkip = 7; | |
750 | const int ContDatagramHeaderSize = ContDatagramHeaderSkip + 1; | |
751 | const int ContDatagramDataSize = FrameSize - ContDatagramHeaderSize; | |
752 | const int TrailerSize = 4; | |
753 | ||
754 | ioaddr = dev->base_addr; | |
755 | ||
756 | insw(ioaddr, (unsigned short*) st, 1); | |
757 | #ifdef XXXDEBUG | |
758 | printk("cm0: received: %02x %02x\n", st[0], st[1]); | |
759 | #endif /* XXXDEBUG */ | |
760 | lp->rx_frames++; | |
761 | ||
762 | /* decide if it is a good or bad frame */ | |
763 | for (ns = 0; ns < NPIDS; ns++) { | |
764 | session_id = lp->rx_session_id[ns]; | |
765 | frame_id = lp->rx_frame_id[ns]; | |
766 | if (st[0] == session_id) { | |
767 | if (st[1] == frame_id || (!frame_id && (st[1] & 0xf0) == 0x30)) { | |
768 | goto good_frame; | |
769 | } else if ((st[1] & 0xf0) == 0x30 && (st[0] & 0x40)) { | |
770 | goto skipped_frame; | |
771 | } else { | |
772 | goto bad_frame; | |
773 | } | |
774 | } else if (st[0] == (session_id | 0x40)) { | |
775 | if ((st[1] & 0xf0) == 0x30) { | |
776 | goto skipped_frame; | |
777 | } else { | |
778 | goto bad_frame; | |
779 | } | |
780 | } | |
781 | } | |
782 | goto bad_frame; | |
783 | ||
784 | skipped_frame: | |
785 | stats->rx_frame_errors++; | |
786 | skb = lp->rx_skb[ns]; | |
787 | if (sb1000_debug > 1) | |
788 | printk(KERN_WARNING "%s: missing frame(s): got %02x %02x " | |
789 | "expecting %02x %02x\n", dev->name, st[0], st[1], | |
790 | skb ? session_id : session_id | 0x40, frame_id); | |
791 | if (skb) { | |
792 | dev_kfree_skb(skb); | |
793 | skb = NULL; | |
794 | } | |
795 | ||
796 | good_frame: | |
797 | lp->rx_frame_id[ns] = 0x30 | ((st[1] + 1) & 0x0f); | |
798 | /* new datagram */ | |
799 | if (st[0] & 0x40) { | |
800 | /* get data length */ | |
801 | insw(ioaddr, buffer, NewDatagramHeaderSize / 2); | |
802 | #ifdef XXXDEBUG | |
803 | printk("cm0: IP identification: %02x%02x fragment offset: %02x%02x\n", buffer[30], buffer[31], buffer[32], buffer[33]); | |
804 | #endif /* XXXDEBUG */ | |
805 | if (buffer[0] != NewDatagramHeaderSkip) { | |
806 | if (sb1000_debug > 1) | |
807 | printk(KERN_WARNING "%s: new datagram header skip error: " | |
808 | "got %02x expecting %02x\n", dev->name, buffer[0], | |
809 | NewDatagramHeaderSkip); | |
810 | stats->rx_length_errors++; | |
811 | insw(ioaddr, buffer, NewDatagramDataSize / 2); | |
812 | goto bad_frame_next; | |
813 | } | |
814 | dlen = ((buffer[NewDatagramHeaderSkip + 3] & 0x0f) << 8 | | |
815 | buffer[NewDatagramHeaderSkip + 4]) - 17; | |
816 | if (dlen > SB1000_MRU) { | |
817 | if (sb1000_debug > 1) | |
818 | printk(KERN_WARNING "%s: datagram length (%d) greater " | |
819 | "than MRU (%d)\n", dev->name, dlen, SB1000_MRU); | |
820 | stats->rx_length_errors++; | |
821 | insw(ioaddr, buffer, NewDatagramDataSize / 2); | |
822 | goto bad_frame_next; | |
823 | } | |
824 | lp->rx_dlen[ns] = dlen; | |
825 | /* compute size to allocate for datagram */ | |
826 | skbsize = dlen + FrameSize; | |
827 | if ((skb = alloc_skb(skbsize, GFP_ATOMIC)) == NULL) { | |
828 | if (sb1000_debug > 1) | |
829 | printk(KERN_WARNING "%s: can't allocate %d bytes long " | |
830 | "skbuff\n", dev->name, skbsize); | |
831 | stats->rx_dropped++; | |
832 | insw(ioaddr, buffer, NewDatagramDataSize / 2); | |
833 | goto dropped_frame; | |
834 | } | |
835 | skb->dev = dev; | |
459a98ed | 836 | skb_reset_mac_header(skb); |
1da177e4 LT |
837 | skb->protocol = (unsigned short) buffer[NewDatagramHeaderSkip + 16]; |
838 | insw(ioaddr, skb_put(skb, NewDatagramDataSize), | |
839 | NewDatagramDataSize / 2); | |
840 | lp->rx_skb[ns] = skb; | |
841 | } else { | |
842 | /* continuation of previous datagram */ | |
843 | insw(ioaddr, buffer, ContDatagramHeaderSize / 2); | |
844 | if (buffer[0] != ContDatagramHeaderSkip) { | |
845 | if (sb1000_debug > 1) | |
846 | printk(KERN_WARNING "%s: cont datagram header skip error: " | |
847 | "got %02x expecting %02x\n", dev->name, buffer[0], | |
848 | ContDatagramHeaderSkip); | |
849 | stats->rx_length_errors++; | |
850 | insw(ioaddr, buffer, ContDatagramDataSize / 2); | |
851 | goto bad_frame_next; | |
852 | } | |
853 | skb = lp->rx_skb[ns]; | |
854 | insw(ioaddr, skb_put(skb, ContDatagramDataSize), | |
855 | ContDatagramDataSize / 2); | |
856 | dlen = lp->rx_dlen[ns]; | |
857 | } | |
858 | if (skb->len < dlen + TrailerSize) { | |
859 | lp->rx_session_id[ns] &= ~0x40; | |
860 | return 0; | |
861 | } | |
862 | ||
863 | /* datagram completed: send to upper level */ | |
864 | skb_trim(skb, dlen); | |
865 | netif_rx(skb); | |
866 | dev->last_rx = jiffies; | |
867 | stats->rx_bytes+=dlen; | |
868 | stats->rx_packets++; | |
869 | lp->rx_skb[ns] = NULL; | |
870 | lp->rx_session_id[ns] |= 0x40; | |
871 | return 0; | |
872 | ||
873 | bad_frame: | |
874 | insw(ioaddr, buffer, FrameSize / 2); | |
875 | if (sb1000_debug > 1) | |
876 | printk(KERN_WARNING "%s: frame error: got %02x %02x\n", | |
877 | dev->name, st[0], st[1]); | |
878 | stats->rx_frame_errors++; | |
879 | bad_frame_next: | |
880 | if (sb1000_debug > 2) | |
881 | sb1000_print_status_buffer(dev->name, st, buffer, FrameSize); | |
882 | dropped_frame: | |
883 | stats->rx_errors++; | |
884 | if (ns < NPIDS) { | |
885 | if ((skb = lp->rx_skb[ns])) { | |
886 | dev_kfree_skb(skb); | |
887 | lp->rx_skb[ns] = NULL; | |
888 | } | |
889 | lp->rx_session_id[ns] |= 0x40; | |
890 | } | |
891 | return -1; | |
892 | } | |
893 | ||
894 | static inline void | |
895 | sb1000_error_dpc(struct net_device *dev) | |
896 | { | |
897 | char *name; | |
898 | unsigned char st[5]; | |
899 | int ioaddr[2]; | |
900 | struct sb1000_private *lp = netdev_priv(dev); | |
901 | const unsigned char Command0[6] = {0x80, 0x26, 0x00, 0x00, 0x00, 0x00}; | |
902 | const int ErrorDpcCounterInitialize = 200; | |
903 | ||
904 | ioaddr[0] = dev->base_addr; | |
905 | /* mem_start holds the second I/O address */ | |
906 | ioaddr[1] = dev->mem_start; | |
907 | name = dev->name; | |
908 | ||
909 | sb1000_wait_for_ready_clear(ioaddr, name); | |
910 | sb1000_send_command(ioaddr, name, Command0); | |
911 | sb1000_wait_for_ready(ioaddr, name); | |
912 | sb1000_read_status(ioaddr, st); | |
913 | if (st[1] & 0x10) | |
914 | lp->rx_error_dpc_count = ErrorDpcCounterInitialize; | |
915 | return; | |
916 | } | |
917 | ||
6aa20a22 | 918 | |
1da177e4 LT |
919 | /* |
920 | * Linux interface functions | |
921 | */ | |
922 | static int | |
923 | sb1000_open(struct net_device *dev) | |
924 | { | |
925 | char *name; | |
926 | int ioaddr[2], status; | |
927 | struct sb1000_private *lp = netdev_priv(dev); | |
928 | const unsigned short FirmwareVersion[] = {0x01, 0x01}; | |
929 | ||
930 | ioaddr[0] = dev->base_addr; | |
931 | /* mem_start holds the second I/O address */ | |
932 | ioaddr[1] = dev->mem_start; | |
933 | name = dev->name; | |
934 | ||
935 | /* initialize sb1000 */ | |
936 | if ((status = sb1000_reset(ioaddr, name))) | |
937 | return status; | |
a26c074c | 938 | ssleep(1); |
1da177e4 LT |
939 | if ((status = sb1000_check_CRC(ioaddr, name))) |
940 | return status; | |
941 | ||
942 | /* initialize private data before board can catch interrupts */ | |
943 | lp->rx_skb[0] = NULL; | |
944 | lp->rx_skb[1] = NULL; | |
945 | lp->rx_skb[2] = NULL; | |
946 | lp->rx_skb[3] = NULL; | |
947 | lp->rx_dlen[0] = 0; | |
948 | lp->rx_dlen[1] = 0; | |
949 | lp->rx_dlen[2] = 0; | |
950 | lp->rx_dlen[3] = 0; | |
951 | lp->rx_frames = 0; | |
952 | lp->rx_error_count = 0; | |
953 | lp->rx_error_dpc_count = 0; | |
954 | lp->rx_session_id[0] = 0x50; | |
955 | lp->rx_session_id[0] = 0x48; | |
956 | lp->rx_session_id[0] = 0x44; | |
957 | lp->rx_session_id[0] = 0x42; | |
958 | lp->rx_frame_id[0] = 0; | |
959 | lp->rx_frame_id[1] = 0; | |
960 | lp->rx_frame_id[2] = 0; | |
961 | lp->rx_frame_id[3] = 0; | |
962 | if (request_irq(dev->irq, &sb1000_interrupt, 0, "sb1000", dev)) { | |
963 | return -EAGAIN; | |
964 | } | |
965 | ||
966 | if (sb1000_debug > 2) | |
967 | printk(KERN_DEBUG "%s: Opening, IRQ %d\n", name, dev->irq); | |
968 | ||
969 | /* Activate board and check firmware version */ | |
970 | udelay(1000); | |
971 | if ((status = sb1000_activate(ioaddr, name))) | |
972 | return status; | |
973 | udelay(0); | |
974 | if ((status = sb1000_get_firmware_version(ioaddr, name, version, 0))) | |
975 | return status; | |
976 | if (version[0] != FirmwareVersion[0] || version[1] != FirmwareVersion[1]) | |
977 | printk(KERN_WARNING "%s: found firmware version %x.%02x " | |
978 | "(should be %x.%02x)\n", name, version[0], version[1], | |
979 | FirmwareVersion[0], FirmwareVersion[1]); | |
980 | ||
981 | ||
982 | netif_start_queue(dev); | |
983 | return 0; /* Always succeed */ | |
984 | } | |
985 | ||
986 | static int sb1000_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) | |
987 | { | |
988 | char* name; | |
989 | unsigned char version[2]; | |
990 | short PID[4]; | |
991 | int ioaddr[2], status, frequency; | |
992 | unsigned int stats[5]; | |
993 | struct sb1000_private *lp = netdev_priv(dev); | |
994 | ||
995 | if (!(dev && dev->flags & IFF_UP)) | |
996 | return -ENODEV; | |
997 | ||
998 | ioaddr[0] = dev->base_addr; | |
999 | /* mem_start holds the second I/O address */ | |
1000 | ioaddr[1] = dev->mem_start; | |
1001 | name = dev->name; | |
1002 | ||
1003 | switch (cmd) { | |
1004 | case SIOCGCMSTATS: /* get statistics */ | |
1005 | stats[0] = lp->stats.rx_bytes; | |
1006 | stats[1] = lp->rx_frames; | |
1007 | stats[2] = lp->stats.rx_packets; | |
1008 | stats[3] = lp->stats.rx_errors; | |
1009 | stats[4] = lp->stats.rx_dropped; | |
1010 | if(copy_to_user(ifr->ifr_data, stats, sizeof(stats))) | |
1011 | return -EFAULT; | |
1012 | status = 0; | |
1013 | break; | |
1014 | ||
1015 | case SIOCGCMFIRMWARE: /* get firmware version */ | |
1016 | if ((status = sb1000_get_firmware_version(ioaddr, name, version, 1))) | |
1017 | return status; | |
1018 | if(copy_to_user(ifr->ifr_data, version, sizeof(version))) | |
1019 | return -EFAULT; | |
1020 | break; | |
1021 | ||
1022 | case SIOCGCMFREQUENCY: /* get frequency */ | |
1023 | if ((status = sb1000_get_frequency(ioaddr, name, &frequency))) | |
1024 | return status; | |
1025 | if(put_user(frequency, (int __user *) ifr->ifr_data)) | |
1026 | return -EFAULT; | |
1027 | break; | |
1028 | ||
1029 | case SIOCSCMFREQUENCY: /* set frequency */ | |
1030 | if (!capable(CAP_NET_ADMIN)) | |
1031 | return -EPERM; | |
1032 | if(get_user(frequency, (int __user *) ifr->ifr_data)) | |
1033 | return -EFAULT; | |
1034 | if ((status = sb1000_set_frequency(ioaddr, name, frequency))) | |
1035 | return status; | |
1036 | break; | |
1037 | ||
1038 | case SIOCGCMPIDS: /* get PIDs */ | |
1039 | if ((status = sb1000_get_PIDs(ioaddr, name, PID))) | |
1040 | return status; | |
1041 | if(copy_to_user(ifr->ifr_data, PID, sizeof(PID))) | |
1042 | return -EFAULT; | |
1043 | break; | |
1044 | ||
1045 | case SIOCSCMPIDS: /* set PIDs */ | |
1046 | if (!capable(CAP_NET_ADMIN)) | |
1047 | return -EPERM; | |
1048 | if(copy_from_user(PID, ifr->ifr_data, sizeof(PID))) | |
1049 | return -EFAULT; | |
1050 | if ((status = sb1000_set_PIDs(ioaddr, name, PID))) | |
1051 | return status; | |
1052 | /* set session_id, frame_id and pkt_type too */ | |
1053 | lp->rx_session_id[0] = 0x50 | (PID[0] & 0x0f); | |
1054 | lp->rx_session_id[1] = 0x48; | |
1055 | lp->rx_session_id[2] = 0x44; | |
1056 | lp->rx_session_id[3] = 0x42; | |
1057 | lp->rx_frame_id[0] = 0; | |
1058 | lp->rx_frame_id[1] = 0; | |
1059 | lp->rx_frame_id[2] = 0; | |
1060 | lp->rx_frame_id[3] = 0; | |
1061 | break; | |
1062 | ||
1063 | default: | |
1064 | status = -EINVAL; | |
1065 | break; | |
1066 | } | |
1067 | return status; | |
1068 | } | |
1069 | ||
1070 | /* transmit function: do nothing since SB1000 can't send anything out */ | |
1071 | static int | |
1072 | sb1000_start_xmit(struct sk_buff *skb, struct net_device *dev) | |
1073 | { | |
1074 | printk(KERN_WARNING "%s: trying to transmit!!!\n", dev->name); | |
1075 | /* sb1000 can't xmit datagrams */ | |
1076 | dev_kfree_skb(skb); | |
1077 | return 0; | |
1078 | } | |
1079 | ||
1080 | /* SB1000 interrupt handler. */ | |
7d12e780 | 1081 | static irqreturn_t sb1000_interrupt(int irq, void *dev_id) |
1da177e4 LT |
1082 | { |
1083 | char *name; | |
1084 | unsigned char st; | |
1085 | int ioaddr[2]; | |
c31f28e7 | 1086 | struct net_device *dev = dev_id; |
1da177e4 LT |
1087 | struct sb1000_private *lp = netdev_priv(dev); |
1088 | ||
1089 | const unsigned char Command0[6] = {0x80, 0x2c, 0x00, 0x00, 0x00, 0x00}; | |
1090 | const unsigned char Command1[6] = {0x80, 0x2e, 0x00, 0x00, 0x00, 0x00}; | |
1091 | const int MaxRxErrorCount = 6; | |
1092 | ||
1da177e4 LT |
1093 | ioaddr[0] = dev->base_addr; |
1094 | /* mem_start holds the second I/O address */ | |
1095 | ioaddr[1] = dev->mem_start; | |
1096 | name = dev->name; | |
1097 | ||
1098 | /* is it a good interrupt? */ | |
1099 | st = inb(ioaddr[1] + 6); | |
1100 | if (!(st & 0x08 && st & 0x20)) { | |
1101 | return IRQ_NONE; | |
1102 | } | |
1103 | ||
1104 | if (sb1000_debug > 3) | |
1105 | printk(KERN_DEBUG "%s: entering interrupt\n", dev->name); | |
1106 | ||
1107 | st = inb(ioaddr[0] + 7); | |
1108 | if (sb1000_rx(dev)) | |
1109 | lp->rx_error_count++; | |
1110 | #ifdef SB1000_DELAY | |
1111 | udelay(SB1000_DELAY); | |
1112 | #endif /* SB1000_DELAY */ | |
1113 | sb1000_issue_read_command(ioaddr, name); | |
1114 | if (st & 0x01) { | |
1115 | sb1000_error_dpc(dev); | |
1116 | sb1000_issue_read_command(ioaddr, name); | |
1117 | } | |
1118 | if (lp->rx_error_dpc_count && !(--lp->rx_error_dpc_count)) { | |
1119 | sb1000_wait_for_ready_clear(ioaddr, name); | |
1120 | sb1000_send_command(ioaddr, name, Command0); | |
1121 | sb1000_wait_for_ready(ioaddr, name); | |
1122 | sb1000_issue_read_command(ioaddr, name); | |
1123 | } | |
1124 | if (lp->rx_error_count >= MaxRxErrorCount) { | |
1125 | sb1000_wait_for_ready_clear(ioaddr, name); | |
1126 | sb1000_send_command(ioaddr, name, Command1); | |
1127 | sb1000_wait_for_ready(ioaddr, name); | |
1128 | sb1000_issue_read_command(ioaddr, name); | |
1129 | lp->rx_error_count = 0; | |
1130 | } | |
1131 | ||
1132 | return IRQ_HANDLED; | |
1133 | } | |
1134 | ||
1135 | static struct net_device_stats *sb1000_stats(struct net_device *dev) | |
1136 | { | |
1137 | struct sb1000_private *lp = netdev_priv(dev); | |
1138 | return &lp->stats; | |
1139 | } | |
1140 | ||
1141 | static int sb1000_close(struct net_device *dev) | |
1142 | { | |
1143 | int i; | |
1144 | int ioaddr[2]; | |
1145 | struct sb1000_private *lp = netdev_priv(dev); | |
1146 | ||
1147 | if (sb1000_debug > 2) | |
1148 | printk(KERN_DEBUG "%s: Shutting down sb1000.\n", dev->name); | |
1149 | ||
1150 | netif_stop_queue(dev); | |
6aa20a22 | 1151 | |
1da177e4 LT |
1152 | ioaddr[0] = dev->base_addr; |
1153 | /* mem_start holds the second I/O address */ | |
1154 | ioaddr[1] = dev->mem_start; | |
1155 | ||
1156 | free_irq(dev->irq, dev); | |
1157 | /* If we don't do this, we can't re-insmod it later. */ | |
1158 | release_region(ioaddr[1], SB1000_IO_EXTENT); | |
1159 | release_region(ioaddr[0], SB1000_IO_EXTENT); | |
1160 | ||
1161 | /* free rx_skb's if needed */ | |
1162 | for (i=0; i<4; i++) { | |
1163 | if (lp->rx_skb[i]) { | |
1164 | dev_kfree_skb(lp->rx_skb[i]); | |
1165 | } | |
1166 | } | |
1167 | return 0; | |
1168 | } | |
1169 | ||
1170 | MODULE_AUTHOR("Franco Venturi <fventuri@mediaone.net>"); | |
1171 | MODULE_DESCRIPTION("General Instruments SB1000 driver"); | |
1172 | MODULE_LICENSE("GPL"); | |
1173 | ||
1174 | static int __init | |
1175 | sb1000_init(void) | |
1176 | { | |
1177 | return pnp_register_driver(&sb1000_driver); | |
1178 | } | |
1179 | ||
1180 | static void __exit | |
1181 | sb1000_exit(void) | |
1182 | { | |
1183 | pnp_unregister_driver(&sb1000_driver); | |
1184 | } | |
1185 | ||
1186 | module_init(sb1000_init); | |
1187 | module_exit(sb1000_exit); |