Commit | Line | Data |
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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]; | |
1da177e4 LT |
79 | }; |
80 | ||
81 | /* prototypes for Linux interface */ | |
82 | extern int sb1000_probe(struct net_device *dev); | |
83 | static int sb1000_open(struct net_device *dev); | |
84 | static int sb1000_dev_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd); | |
85 | static int sb1000_start_xmit(struct sk_buff *skb, struct net_device *dev); | |
7d12e780 | 86 | static irqreturn_t sb1000_interrupt(int irq, void *dev_id); |
1da177e4 LT |
87 | static int sb1000_close(struct net_device *dev); |
88 | ||
89 | ||
90 | /* SB1000 hardware routines to be used during open/configuration phases */ | |
a8d06342 | 91 | static int card_wait_for_busy_clear(const int ioaddr[], |
1da177e4 | 92 | const char* name); |
a8d06342 | 93 | static int card_wait_for_ready(const int ioaddr[], const char* name, |
1da177e4 | 94 | unsigned char in[]); |
858119e1 | 95 | static int card_send_command(const int ioaddr[], const char* name, |
1da177e4 LT |
96 | const unsigned char out[], unsigned char in[]); |
97 | ||
98 | /* SB1000 hardware routines to be used during frame rx interrupt */ | |
a8d06342 DV |
99 | static int sb1000_wait_for_ready(const int ioaddr[], const char* name); |
100 | static int sb1000_wait_for_ready_clear(const int ioaddr[], | |
1da177e4 | 101 | const char* name); |
a8d06342 | 102 | static void sb1000_send_command(const int ioaddr[], const char* name, |
1da177e4 | 103 | const unsigned char out[]); |
a8d06342 DV |
104 | static void sb1000_read_status(const int ioaddr[], unsigned char in[]); |
105 | static void sb1000_issue_read_command(const int ioaddr[], | |
1da177e4 LT |
106 | const char* name); |
107 | ||
108 | /* SB1000 commands for open/configuration */ | |
a8d06342 DV |
109 | static int sb1000_reset(const int ioaddr[], const char* name); |
110 | static int sb1000_check_CRC(const int ioaddr[], const char* name); | |
1da177e4 LT |
111 | static inline int sb1000_start_get_set_command(const int ioaddr[], |
112 | const char* name); | |
a8d06342 | 113 | static int sb1000_end_get_set_command(const int ioaddr[], |
1da177e4 | 114 | const char* name); |
a8d06342 | 115 | static int sb1000_activate(const int ioaddr[], const char* name); |
1da177e4 LT |
116 | static int sb1000_get_firmware_version(const int ioaddr[], |
117 | const char* name, unsigned char version[], int do_end); | |
118 | static int sb1000_get_frequency(const int ioaddr[], const char* name, | |
119 | int* frequency); | |
120 | static int sb1000_set_frequency(const int ioaddr[], const char* name, | |
121 | int frequency); | |
122 | static int sb1000_get_PIDs(const int ioaddr[], const char* name, | |
123 | short PID[]); | |
124 | static int sb1000_set_PIDs(const int ioaddr[], const char* name, | |
125 | const short PID[]); | |
126 | ||
127 | /* SB1000 commands for frame rx interrupt */ | |
a8d06342 DV |
128 | static int sb1000_rx(struct net_device *dev); |
129 | static void sb1000_error_dpc(struct net_device *dev); | |
1da177e4 LT |
130 | |
131 | static const struct pnp_device_id sb1000_pnp_ids[] = { | |
132 | { "GIC1000", 0 }, | |
133 | { "", 0 } | |
134 | }; | |
135 | MODULE_DEVICE_TABLE(pnp, sb1000_pnp_ids); | |
136 | ||
d49d19c9 SH |
137 | static const struct net_device_ops sb1000_netdev_ops = { |
138 | .ndo_open = sb1000_open, | |
139 | .ndo_start_xmit = sb1000_start_xmit, | |
140 | .ndo_do_ioctl = sb1000_dev_ioctl, | |
141 | .ndo_stop = sb1000_close, | |
142 | .ndo_change_mtu = eth_change_mtu, | |
143 | .ndo_set_mac_address = eth_mac_addr, | |
144 | .ndo_validate_addr = eth_validate_addr, | |
145 | }; | |
146 | ||
1da177e4 LT |
147 | static int |
148 | sb1000_probe_one(struct pnp_dev *pdev, const struct pnp_device_id *id) | |
149 | { | |
150 | struct net_device *dev; | |
151 | unsigned short ioaddr[2], irq; | |
152 | unsigned int serial_number; | |
153 | int error = -ENODEV; | |
6aa20a22 | 154 | |
1da177e4 LT |
155 | if (pnp_device_attach(pdev) < 0) |
156 | return -ENODEV; | |
157 | if (pnp_activate_dev(pdev) < 0) | |
158 | goto out_detach; | |
159 | ||
160 | if (!pnp_port_valid(pdev, 0) || !pnp_port_valid(pdev, 1)) | |
161 | goto out_disable; | |
162 | if (!pnp_irq_valid(pdev, 0)) | |
163 | goto out_disable; | |
6aa20a22 | 164 | |
1da177e4 | 165 | serial_number = pdev->card->serial; |
6aa20a22 | 166 | |
1da177e4 LT |
167 | ioaddr[0] = pnp_port_start(pdev, 0); |
168 | ioaddr[1] = pnp_port_start(pdev, 0); | |
6aa20a22 | 169 | |
1da177e4 LT |
170 | irq = pnp_irq(pdev, 0); |
171 | ||
172 | if (!request_region(ioaddr[0], 16, "sb1000")) | |
173 | goto out_disable; | |
174 | if (!request_region(ioaddr[1], 16, "sb1000")) | |
175 | goto out_release_region0; | |
176 | ||
177 | dev = alloc_etherdev(sizeof(struct sb1000_private)); | |
178 | if (!dev) { | |
179 | error = -ENOMEM; | |
180 | goto out_release_regions; | |
181 | } | |
182 | ||
6aa20a22 | 183 | |
1da177e4 LT |
184 | dev->base_addr = ioaddr[0]; |
185 | /* mem_start holds the second I/O address */ | |
186 | dev->mem_start = ioaddr[1]; | |
187 | dev->irq = irq; | |
188 | ||
189 | if (sb1000_debug > 0) | |
190 | printk(KERN_NOTICE "%s: sb1000 at (%#3.3lx,%#3.3lx), " | |
191 | "S/N %#8.8x, IRQ %d.\n", dev->name, dev->base_addr, | |
192 | dev->mem_start, serial_number, dev->irq); | |
193 | ||
194 | /* | |
195 | * The SB1000 is an rx-only cable modem device. The uplink is a modem | |
196 | * and we do not want to arp on it. | |
197 | */ | |
198 | dev->flags = IFF_POINTOPOINT|IFF_NOARP; | |
199 | ||
1da177e4 LT |
200 | SET_NETDEV_DEV(dev, &pdev->dev); |
201 | ||
202 | if (sb1000_debug > 0) | |
203 | printk(KERN_NOTICE "%s", version); | |
204 | ||
d49d19c9 | 205 | dev->netdev_ops = &sb1000_netdev_ops; |
1da177e4 LT |
206 | |
207 | /* hardware address is 0:0:serial_number */ | |
208 | dev->dev_addr[2] = serial_number >> 24 & 0xff; | |
209 | dev->dev_addr[3] = serial_number >> 16 & 0xff; | |
210 | dev->dev_addr[4] = serial_number >> 8 & 0xff; | |
211 | dev->dev_addr[5] = serial_number >> 0 & 0xff; | |
212 | ||
213 | pnp_set_drvdata(pdev, dev); | |
214 | ||
215 | error = register_netdev(dev); | |
216 | if (error) | |
217 | goto out_free_netdev; | |
218 | return 0; | |
219 | ||
220 | out_free_netdev: | |
221 | free_netdev(dev); | |
222 | out_release_regions: | |
223 | release_region(ioaddr[1], 16); | |
224 | out_release_region0: | |
225 | release_region(ioaddr[0], 16); | |
226 | out_disable: | |
227 | pnp_disable_dev(pdev); | |
228 | out_detach: | |
229 | pnp_device_detach(pdev); | |
230 | return error; | |
231 | } | |
232 | ||
233 | static void | |
234 | sb1000_remove_one(struct pnp_dev *pdev) | |
235 | { | |
236 | struct net_device *dev = pnp_get_drvdata(pdev); | |
237 | ||
238 | unregister_netdev(dev); | |
239 | release_region(dev->base_addr, 16); | |
240 | release_region(dev->mem_start, 16); | |
241 | free_netdev(dev); | |
242 | } | |
243 | ||
244 | static struct pnp_driver sb1000_driver = { | |
245 | .name = "sb1000", | |
246 | .id_table = sb1000_pnp_ids, | |
247 | .probe = sb1000_probe_one, | |
248 | .remove = sb1000_remove_one, | |
249 | }; | |
250 | ||
6aa20a22 | 251 | |
1da177e4 LT |
252 | /* |
253 | * SB1000 hardware routines to be used during open/configuration phases | |
254 | */ | |
255 | ||
256 | static const int TimeOutJiffies = (875 * HZ) / 100; | |
257 | ||
1da177e4 | 258 | /* Card Wait For Busy Clear (cannot be used during an interrupt) */ |
a8d06342 | 259 | static int |
1da177e4 LT |
260 | card_wait_for_busy_clear(const int ioaddr[], const char* name) |
261 | { | |
262 | unsigned char a; | |
263 | unsigned long timeout; | |
264 | ||
265 | a = inb(ioaddr[0] + 7); | |
266 | timeout = jiffies + TimeOutJiffies; | |
267 | while (a & 0x80 || a & 0x40) { | |
268 | /* a little sleep */ | |
269 | yield(); | |
270 | ||
271 | a = inb(ioaddr[0] + 7); | |
272 | if (time_after_eq(jiffies, timeout)) { | |
273 | printk(KERN_WARNING "%s: card_wait_for_busy_clear timeout\n", | |
274 | name); | |
275 | return -ETIME; | |
276 | } | |
277 | } | |
278 | ||
279 | return 0; | |
280 | } | |
281 | ||
282 | /* Card Wait For Ready (cannot be used during an interrupt) */ | |
a8d06342 | 283 | static int |
1da177e4 LT |
284 | card_wait_for_ready(const int ioaddr[], const char* name, unsigned char in[]) |
285 | { | |
286 | unsigned char a; | |
287 | unsigned long timeout; | |
288 | ||
289 | a = inb(ioaddr[1] + 6); | |
290 | timeout = jiffies + TimeOutJiffies; | |
291 | while (a & 0x80 || !(a & 0x40)) { | |
292 | /* a little sleep */ | |
293 | yield(); | |
294 | ||
295 | a = inb(ioaddr[1] + 6); | |
296 | if (time_after_eq(jiffies, timeout)) { | |
297 | printk(KERN_WARNING "%s: card_wait_for_ready timeout\n", | |
298 | name); | |
299 | return -ETIME; | |
300 | } | |
301 | } | |
302 | ||
303 | in[1] = inb(ioaddr[0] + 1); | |
304 | in[2] = inb(ioaddr[0] + 2); | |
305 | in[3] = inb(ioaddr[0] + 3); | |
306 | in[4] = inb(ioaddr[0] + 4); | |
307 | in[0] = inb(ioaddr[0] + 5); | |
308 | in[6] = inb(ioaddr[0] + 6); | |
309 | in[5] = inb(ioaddr[1] + 6); | |
310 | return 0; | |
311 | } | |
312 | ||
313 | /* Card Send Command (cannot be used during an interrupt) */ | |
858119e1 | 314 | static int |
1da177e4 LT |
315 | card_send_command(const int ioaddr[], const char* name, |
316 | const unsigned char out[], unsigned char in[]) | |
317 | { | |
318 | int status, x; | |
319 | ||
320 | if ((status = card_wait_for_busy_clear(ioaddr, name))) | |
321 | return status; | |
322 | outb(0xa0, ioaddr[0] + 6); | |
323 | outb(out[2], ioaddr[0] + 1); | |
324 | outb(out[3], ioaddr[0] + 2); | |
325 | outb(out[4], ioaddr[0] + 3); | |
326 | outb(out[5], ioaddr[0] + 4); | |
327 | outb(out[1], ioaddr[0] + 5); | |
328 | outb(0xa0, ioaddr[0] + 6); | |
329 | outb(out[0], ioaddr[0] + 7); | |
330 | if (out[0] != 0x20 && out[0] != 0x30) { | |
331 | if ((status = card_wait_for_ready(ioaddr, name, in))) | |
332 | return status; | |
333 | inb(ioaddr[0] + 7); | |
334 | if (sb1000_debug > 3) | |
335 | printk(KERN_DEBUG "%s: card_send_command " | |
336 | "out: %02x%02x%02x%02x%02x%02x " | |
337 | "in: %02x%02x%02x%02x%02x%02x%02x\n", name, | |
338 | out[0], out[1], out[2], out[3], out[4], out[5], | |
339 | in[0], in[1], in[2], in[3], in[4], in[5], in[6]); | |
340 | } else { | |
341 | if (sb1000_debug > 3) | |
342 | printk(KERN_DEBUG "%s: card_send_command " | |
343 | "out: %02x%02x%02x%02x%02x%02x\n", name, | |
344 | out[0], out[1], out[2], out[3], out[4], out[5]); | |
345 | } | |
346 | ||
347 | if (out[1] == 0x1b) { | |
348 | x = (out[2] == 0x02); | |
349 | } else { | |
350 | if (out[0] >= 0x80 && in[0] != (out[1] | 0x80)) | |
351 | return -EIO; | |
352 | } | |
353 | return 0; | |
354 | } | |
355 | ||
6aa20a22 | 356 | |
1da177e4 LT |
357 | /* |
358 | * SB1000 hardware routines to be used during frame rx interrupt | |
359 | */ | |
360 | static const int Sb1000TimeOutJiffies = 7 * HZ; | |
361 | ||
362 | /* Card Wait For Ready (to be used during frame rx) */ | |
a8d06342 | 363 | static int |
1da177e4 LT |
364 | sb1000_wait_for_ready(const int ioaddr[], const char* name) |
365 | { | |
366 | unsigned long timeout; | |
367 | ||
368 | timeout = jiffies + Sb1000TimeOutJiffies; | |
369 | while (inb(ioaddr[1] + 6) & 0x80) { | |
370 | if (time_after_eq(jiffies, timeout)) { | |
371 | printk(KERN_WARNING "%s: sb1000_wait_for_ready timeout\n", | |
372 | name); | |
373 | return -ETIME; | |
374 | } | |
375 | } | |
376 | timeout = jiffies + Sb1000TimeOutJiffies; | |
377 | while (!(inb(ioaddr[1] + 6) & 0x40)) { | |
378 | if (time_after_eq(jiffies, timeout)) { | |
379 | printk(KERN_WARNING "%s: sb1000_wait_for_ready timeout\n", | |
380 | name); | |
381 | return -ETIME; | |
382 | } | |
383 | } | |
384 | inb(ioaddr[0] + 7); | |
385 | return 0; | |
386 | } | |
387 | ||
388 | /* Card Wait For Ready Clear (to be used during frame rx) */ | |
a8d06342 | 389 | static int |
1da177e4 LT |
390 | sb1000_wait_for_ready_clear(const int ioaddr[], const char* name) |
391 | { | |
392 | unsigned long timeout; | |
393 | ||
394 | timeout = jiffies + Sb1000TimeOutJiffies; | |
395 | while (inb(ioaddr[1] + 6) & 0x80) { | |
396 | if (time_after_eq(jiffies, timeout)) { | |
397 | printk(KERN_WARNING "%s: sb1000_wait_for_ready_clear timeout\n", | |
398 | name); | |
399 | return -ETIME; | |
400 | } | |
401 | } | |
402 | timeout = jiffies + Sb1000TimeOutJiffies; | |
403 | while (inb(ioaddr[1] + 6) & 0x40) { | |
404 | if (time_after_eq(jiffies, timeout)) { | |
405 | printk(KERN_WARNING "%s: sb1000_wait_for_ready_clear timeout\n", | |
406 | name); | |
407 | return -ETIME; | |
408 | } | |
409 | } | |
410 | return 0; | |
411 | } | |
412 | ||
413 | /* Card Send Command (to be used during frame rx) */ | |
a8d06342 | 414 | static void |
1da177e4 LT |
415 | sb1000_send_command(const int ioaddr[], const char* name, |
416 | const unsigned char out[]) | |
417 | { | |
418 | outb(out[2], ioaddr[0] + 1); | |
419 | outb(out[3], ioaddr[0] + 2); | |
420 | outb(out[4], ioaddr[0] + 3); | |
421 | outb(out[5], ioaddr[0] + 4); | |
422 | outb(out[1], ioaddr[0] + 5); | |
423 | outb(out[0], ioaddr[0] + 7); | |
424 | if (sb1000_debug > 3) | |
425 | printk(KERN_DEBUG "%s: sb1000_send_command out: %02x%02x%02x%02x" | |
426 | "%02x%02x\n", name, out[0], out[1], out[2], out[3], out[4], out[5]); | |
427 | return; | |
428 | } | |
429 | ||
430 | /* Card Read Status (to be used during frame rx) */ | |
a8d06342 | 431 | static void |
1da177e4 LT |
432 | sb1000_read_status(const int ioaddr[], unsigned char in[]) |
433 | { | |
434 | in[1] = inb(ioaddr[0] + 1); | |
435 | in[2] = inb(ioaddr[0] + 2); | |
436 | in[3] = inb(ioaddr[0] + 3); | |
437 | in[4] = inb(ioaddr[0] + 4); | |
438 | in[0] = inb(ioaddr[0] + 5); | |
439 | return; | |
440 | } | |
441 | ||
442 | /* Issue Read Command (to be used during frame rx) */ | |
a8d06342 | 443 | static void |
1da177e4 LT |
444 | sb1000_issue_read_command(const int ioaddr[], const char* name) |
445 | { | |
7dd73bbc | 446 | static const unsigned char Command0[6] = {0x20, 0x00, 0x00, 0x01, 0x00, 0x00}; |
1da177e4 LT |
447 | |
448 | sb1000_wait_for_ready_clear(ioaddr, name); | |
449 | outb(0xa0, ioaddr[0] + 6); | |
450 | sb1000_send_command(ioaddr, name, Command0); | |
451 | return; | |
452 | } | |
453 | ||
6aa20a22 | 454 | |
1da177e4 LT |
455 | /* |
456 | * SB1000 commands for open/configuration | |
457 | */ | |
458 | /* reset SB1000 card */ | |
a8d06342 | 459 | static int |
1da177e4 LT |
460 | sb1000_reset(const int ioaddr[], const char* name) |
461 | { | |
7dd73bbc DV |
462 | static const unsigned char Command0[6] = {0x80, 0x16, 0x00, 0x00, 0x00, 0x00}; |
463 | ||
1da177e4 LT |
464 | unsigned char st[7]; |
465 | int port, status; | |
1da177e4 LT |
466 | |
467 | port = ioaddr[1] + 6; | |
468 | outb(0x4, port); | |
469 | inb(port); | |
470 | udelay(1000); | |
471 | outb(0x0, port); | |
472 | inb(port); | |
a26c074c | 473 | ssleep(1); |
1da177e4 LT |
474 | outb(0x4, port); |
475 | inb(port); | |
476 | udelay(1000); | |
477 | outb(0x0, port); | |
478 | inb(port); | |
479 | udelay(0); | |
480 | ||
481 | if ((status = card_send_command(ioaddr, name, Command0, st))) | |
482 | return status; | |
483 | if (st[3] != 0xf0) | |
484 | return -EIO; | |
485 | return 0; | |
486 | } | |
487 | ||
488 | /* check SB1000 firmware CRC */ | |
a8d06342 | 489 | static int |
1da177e4 LT |
490 | sb1000_check_CRC(const int ioaddr[], const char* name) |
491 | { | |
7dd73bbc DV |
492 | static const unsigned char Command0[6] = {0x80, 0x1f, 0x00, 0x00, 0x00, 0x00}; |
493 | ||
1da177e4 LT |
494 | unsigned char st[7]; |
495 | int crc, status; | |
1da177e4 LT |
496 | |
497 | /* check CRC */ | |
498 | if ((status = card_send_command(ioaddr, name, Command0, st))) | |
499 | return status; | |
500 | if (st[1] != st[3] || st[2] != st[4]) | |
501 | return -EIO; | |
502 | crc = st[1] << 8 | st[2]; | |
503 | return 0; | |
504 | } | |
505 | ||
506 | static inline int | |
507 | sb1000_start_get_set_command(const int ioaddr[], const char* name) | |
508 | { | |
7dd73bbc DV |
509 | static const unsigned char Command0[6] = {0x80, 0x1b, 0x00, 0x00, 0x00, 0x00}; |
510 | ||
1da177e4 | 511 | unsigned char st[7]; |
1da177e4 LT |
512 | |
513 | return card_send_command(ioaddr, name, Command0, st); | |
514 | } | |
515 | ||
a8d06342 | 516 | static int |
1da177e4 LT |
517 | sb1000_end_get_set_command(const int ioaddr[], const char* name) |
518 | { | |
7dd73bbc DV |
519 | static const unsigned char Command0[6] = {0x80, 0x1b, 0x02, 0x00, 0x00, 0x00}; |
520 | static const unsigned char Command1[6] = {0x20, 0x00, 0x00, 0x00, 0x00, 0x00}; | |
521 | ||
1da177e4 LT |
522 | unsigned char st[7]; |
523 | int status; | |
1da177e4 LT |
524 | |
525 | if ((status = card_send_command(ioaddr, name, Command0, st))) | |
526 | return status; | |
527 | return card_send_command(ioaddr, name, Command1, st); | |
528 | } | |
529 | ||
a8d06342 | 530 | static int |
1da177e4 LT |
531 | sb1000_activate(const int ioaddr[], const char* name) |
532 | { | |
7dd73bbc DV |
533 | static const unsigned char Command0[6] = {0x80, 0x11, 0x00, 0x00, 0x00, 0x00}; |
534 | static const unsigned char Command1[6] = {0x80, 0x16, 0x00, 0x00, 0x00, 0x00}; | |
535 | ||
1da177e4 LT |
536 | unsigned char st[7]; |
537 | int status; | |
1da177e4 | 538 | |
a26c074c | 539 | ssleep(1); |
1da177e4 LT |
540 | if ((status = card_send_command(ioaddr, name, Command0, st))) |
541 | return status; | |
542 | if ((status = card_send_command(ioaddr, name, Command1, st))) | |
543 | return status; | |
544 | if (st[3] != 0xf1) { | |
545 | if ((status = sb1000_start_get_set_command(ioaddr, name))) | |
546 | return status; | |
547 | return -EIO; | |
548 | } | |
549 | udelay(1000); | |
550 | return sb1000_start_get_set_command(ioaddr, name); | |
551 | } | |
552 | ||
553 | /* get SB1000 firmware version */ | |
554 | static int | |
555 | sb1000_get_firmware_version(const int ioaddr[], const char* name, | |
556 | unsigned char version[], int do_end) | |
557 | { | |
7dd73bbc DV |
558 | static const unsigned char Command0[6] = {0x80, 0x23, 0x00, 0x00, 0x00, 0x00}; |
559 | ||
1da177e4 LT |
560 | unsigned char st[7]; |
561 | int status; | |
1da177e4 LT |
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 | { | |
7dd73bbc DV |
581 | static const unsigned char Command0[6] = {0x80, 0x44, 0x00, 0x00, 0x00, 0x00}; |
582 | ||
1da177e4 LT |
583 | unsigned char st[7]; |
584 | int status; | |
1da177e4 LT |
585 | |
586 | udelay(1000); | |
587 | if ((status = sb1000_start_get_set_command(ioaddr, name))) | |
588 | return status; | |
589 | if ((status = card_send_command(ioaddr, name, Command0, st))) | |
590 | return status; | |
591 | *frequency = ((st[1] << 8 | st[2]) << 8 | st[3]) << 8 | st[4]; | |
592 | return sb1000_end_get_set_command(ioaddr, name); | |
593 | } | |
594 | ||
595 | /* set SB1000 frequency */ | |
596 | static int | |
597 | sb1000_set_frequency(const int ioaddr[], const char* name, int frequency) | |
598 | { | |
599 | unsigned char st[7]; | |
600 | int status; | |
601 | unsigned char Command0[6] = {0x80, 0x29, 0x00, 0x00, 0x00, 0x00}; | |
602 | ||
603 | const int FrequencyLowerLimit = 57000; | |
604 | const int FrequencyUpperLimit = 804000; | |
605 | ||
606 | if (frequency < FrequencyLowerLimit || frequency > FrequencyUpperLimit) { | |
607 | printk(KERN_ERR "%s: frequency chosen (%d kHz) is not in the range " | |
608 | "[%d,%d] kHz\n", name, frequency, FrequencyLowerLimit, | |
609 | FrequencyUpperLimit); | |
610 | return -EINVAL; | |
611 | } | |
612 | udelay(1000); | |
613 | if ((status = sb1000_start_get_set_command(ioaddr, name))) | |
614 | return status; | |
615 | Command0[5] = frequency & 0xff; | |
616 | frequency >>= 8; | |
617 | Command0[4] = frequency & 0xff; | |
618 | frequency >>= 8; | |
619 | Command0[3] = frequency & 0xff; | |
620 | frequency >>= 8; | |
621 | Command0[2] = frequency & 0xff; | |
622 | return card_send_command(ioaddr, name, Command0, st); | |
623 | } | |
624 | ||
625 | /* get SB1000 PIDs */ | |
626 | static int | |
627 | sb1000_get_PIDs(const int ioaddr[], const char* name, short PID[]) | |
628 | { | |
7dd73bbc DV |
629 | static const unsigned char Command0[6] = {0x80, 0x40, 0x00, 0x00, 0x00, 0x00}; |
630 | static const unsigned char Command1[6] = {0x80, 0x41, 0x00, 0x00, 0x00, 0x00}; | |
631 | static const unsigned char Command2[6] = {0x80, 0x42, 0x00, 0x00, 0x00, 0x00}; | |
632 | static const unsigned char Command3[6] = {0x80, 0x43, 0x00, 0x00, 0x00, 0x00}; | |
633 | ||
1da177e4 LT |
634 | unsigned char st[7]; |
635 | int status; | |
1da177e4 LT |
636 | |
637 | udelay(1000); | |
638 | if ((status = sb1000_start_get_set_command(ioaddr, name))) | |
639 | return status; | |
640 | ||
641 | if ((status = card_send_command(ioaddr, name, Command0, st))) | |
642 | return status; | |
643 | PID[0] = st[1] << 8 | st[2]; | |
644 | ||
645 | if ((status = card_send_command(ioaddr, name, Command1, st))) | |
646 | return status; | |
647 | PID[1] = st[1] << 8 | st[2]; | |
648 | ||
649 | if ((status = card_send_command(ioaddr, name, Command2, st))) | |
650 | return status; | |
651 | PID[2] = st[1] << 8 | st[2]; | |
652 | ||
653 | if ((status = card_send_command(ioaddr, name, Command3, st))) | |
654 | return status; | |
655 | PID[3] = st[1] << 8 | st[2]; | |
656 | ||
657 | return sb1000_end_get_set_command(ioaddr, name); | |
658 | } | |
659 | ||
660 | /* set SB1000 PIDs */ | |
661 | static int | |
662 | sb1000_set_PIDs(const int ioaddr[], const char* name, const short PID[]) | |
663 | { | |
7dd73bbc DV |
664 | static const unsigned char Command4[6] = {0x80, 0x2e, 0x00, 0x00, 0x00, 0x00}; |
665 | ||
1da177e4 LT |
666 | unsigned char st[7]; |
667 | short p; | |
668 | int status; | |
669 | unsigned char Command0[6] = {0x80, 0x31, 0x00, 0x00, 0x00, 0x00}; | |
670 | unsigned char Command1[6] = {0x80, 0x32, 0x00, 0x00, 0x00, 0x00}; | |
671 | unsigned char Command2[6] = {0x80, 0x33, 0x00, 0x00, 0x00, 0x00}; | |
672 | unsigned char Command3[6] = {0x80, 0x34, 0x00, 0x00, 0x00, 0x00}; | |
1da177e4 LT |
673 | |
674 | udelay(1000); | |
675 | if ((status = sb1000_start_get_set_command(ioaddr, name))) | |
676 | return status; | |
677 | ||
678 | p = PID[0]; | |
679 | Command0[3] = p & 0xff; | |
680 | p >>= 8; | |
681 | Command0[2] = p & 0xff; | |
682 | if ((status = card_send_command(ioaddr, name, Command0, st))) | |
683 | return status; | |
684 | ||
685 | p = PID[1]; | |
686 | Command1[3] = p & 0xff; | |
687 | p >>= 8; | |
688 | Command1[2] = p & 0xff; | |
689 | if ((status = card_send_command(ioaddr, name, Command1, st))) | |
690 | return status; | |
691 | ||
692 | p = PID[2]; | |
693 | Command2[3] = p & 0xff; | |
694 | p >>= 8; | |
695 | Command2[2] = p & 0xff; | |
696 | if ((status = card_send_command(ioaddr, name, Command2, st))) | |
697 | return status; | |
698 | ||
699 | p = PID[3]; | |
700 | Command3[3] = p & 0xff; | |
701 | p >>= 8; | |
702 | Command3[2] = p & 0xff; | |
703 | if ((status = card_send_command(ioaddr, name, Command3, st))) | |
704 | return status; | |
705 | ||
706 | if ((status = card_send_command(ioaddr, name, Command4, st))) | |
707 | return status; | |
708 | return sb1000_end_get_set_command(ioaddr, name); | |
709 | } | |
710 | ||
6aa20a22 | 711 | |
a8d06342 | 712 | static void |
1da177e4 LT |
713 | sb1000_print_status_buffer(const char* name, unsigned char st[], |
714 | unsigned char buffer[], int size) | |
715 | { | |
716 | int i, j, k; | |
717 | ||
718 | printk(KERN_DEBUG "%s: status: %02x %02x\n", name, st[0], st[1]); | |
719 | if (buffer[24] == 0x08 && buffer[25] == 0x00 && buffer[26] == 0x45) { | |
720 | printk(KERN_DEBUG "%s: length: %d protocol: %d from: %d.%d.%d.%d:%d " | |
721 | "to %d.%d.%d.%d:%d\n", name, buffer[28] << 8 | buffer[29], | |
722 | buffer[35], buffer[38], buffer[39], buffer[40], buffer[41], | |
723 | buffer[46] << 8 | buffer[47], | |
724 | buffer[42], buffer[43], buffer[44], buffer[45], | |
725 | buffer[48] << 8 | buffer[49]); | |
726 | } else { | |
727 | for (i = 0, k = 0; i < (size + 7) / 8; i++) { | |
728 | printk(KERN_DEBUG "%s: %s", name, i ? " " : "buffer:"); | |
729 | for (j = 0; j < 8 && k < size; j++, k++) | |
730 | printk(" %02x", buffer[k]); | |
731 | printk("\n"); | |
732 | } | |
733 | } | |
734 | return; | |
735 | } | |
736 | ||
737 | /* | |
738 | * SB1000 commands for frame rx interrupt | |
739 | */ | |
740 | /* receive a single frame and assemble datagram | |
741 | * (this is the heart of the interrupt routine) | |
742 | */ | |
a8d06342 | 743 | static int |
1da177e4 LT |
744 | sb1000_rx(struct net_device *dev) |
745 | { | |
746 | ||
747 | #define FRAMESIZE 184 | |
748 | unsigned char st[2], buffer[FRAMESIZE], session_id, frame_id; | |
749 | short dlen; | |
750 | int ioaddr, ns; | |
751 | unsigned int skbsize; | |
752 | struct sk_buff *skb; | |
753 | struct sb1000_private *lp = netdev_priv(dev); | |
09f75cd7 | 754 | struct net_device_stats *stats = &dev->stats; |
1da177e4 LT |
755 | |
756 | /* SB1000 frame constants */ | |
757 | const int FrameSize = FRAMESIZE; | |
758 | const int NewDatagramHeaderSkip = 8; | |
759 | const int NewDatagramHeaderSize = NewDatagramHeaderSkip + 18; | |
760 | const int NewDatagramDataSize = FrameSize - NewDatagramHeaderSize; | |
761 | const int ContDatagramHeaderSkip = 7; | |
762 | const int ContDatagramHeaderSize = ContDatagramHeaderSkip + 1; | |
763 | const int ContDatagramDataSize = FrameSize - ContDatagramHeaderSize; | |
764 | const int TrailerSize = 4; | |
765 | ||
766 | ioaddr = dev->base_addr; | |
767 | ||
768 | insw(ioaddr, (unsigned short*) st, 1); | |
769 | #ifdef XXXDEBUG | |
770 | printk("cm0: received: %02x %02x\n", st[0], st[1]); | |
771 | #endif /* XXXDEBUG */ | |
772 | lp->rx_frames++; | |
773 | ||
774 | /* decide if it is a good or bad frame */ | |
775 | for (ns = 0; ns < NPIDS; ns++) { | |
776 | session_id = lp->rx_session_id[ns]; | |
777 | frame_id = lp->rx_frame_id[ns]; | |
778 | if (st[0] == session_id) { | |
779 | if (st[1] == frame_id || (!frame_id && (st[1] & 0xf0) == 0x30)) { | |
780 | goto good_frame; | |
781 | } else if ((st[1] & 0xf0) == 0x30 && (st[0] & 0x40)) { | |
782 | goto skipped_frame; | |
783 | } else { | |
784 | goto bad_frame; | |
785 | } | |
786 | } else if (st[0] == (session_id | 0x40)) { | |
787 | if ((st[1] & 0xf0) == 0x30) { | |
788 | goto skipped_frame; | |
789 | } else { | |
790 | goto bad_frame; | |
791 | } | |
792 | } | |
793 | } | |
794 | goto bad_frame; | |
795 | ||
796 | skipped_frame: | |
797 | stats->rx_frame_errors++; | |
798 | skb = lp->rx_skb[ns]; | |
799 | if (sb1000_debug > 1) | |
800 | printk(KERN_WARNING "%s: missing frame(s): got %02x %02x " | |
801 | "expecting %02x %02x\n", dev->name, st[0], st[1], | |
802 | skb ? session_id : session_id | 0x40, frame_id); | |
803 | if (skb) { | |
804 | dev_kfree_skb(skb); | |
805 | skb = NULL; | |
806 | } | |
807 | ||
808 | good_frame: | |
809 | lp->rx_frame_id[ns] = 0x30 | ((st[1] + 1) & 0x0f); | |
810 | /* new datagram */ | |
811 | if (st[0] & 0x40) { | |
812 | /* get data length */ | |
813 | insw(ioaddr, buffer, NewDatagramHeaderSize / 2); | |
814 | #ifdef XXXDEBUG | |
815 | printk("cm0: IP identification: %02x%02x fragment offset: %02x%02x\n", buffer[30], buffer[31], buffer[32], buffer[33]); | |
816 | #endif /* XXXDEBUG */ | |
817 | if (buffer[0] != NewDatagramHeaderSkip) { | |
818 | if (sb1000_debug > 1) | |
819 | printk(KERN_WARNING "%s: new datagram header skip error: " | |
820 | "got %02x expecting %02x\n", dev->name, buffer[0], | |
821 | NewDatagramHeaderSkip); | |
822 | stats->rx_length_errors++; | |
823 | insw(ioaddr, buffer, NewDatagramDataSize / 2); | |
824 | goto bad_frame_next; | |
825 | } | |
826 | dlen = ((buffer[NewDatagramHeaderSkip + 3] & 0x0f) << 8 | | |
827 | buffer[NewDatagramHeaderSkip + 4]) - 17; | |
828 | if (dlen > SB1000_MRU) { | |
829 | if (sb1000_debug > 1) | |
830 | printk(KERN_WARNING "%s: datagram length (%d) greater " | |
831 | "than MRU (%d)\n", dev->name, dlen, SB1000_MRU); | |
832 | stats->rx_length_errors++; | |
833 | insw(ioaddr, buffer, NewDatagramDataSize / 2); | |
834 | goto bad_frame_next; | |
835 | } | |
836 | lp->rx_dlen[ns] = dlen; | |
837 | /* compute size to allocate for datagram */ | |
838 | skbsize = dlen + FrameSize; | |
839 | if ((skb = alloc_skb(skbsize, GFP_ATOMIC)) == NULL) { | |
840 | if (sb1000_debug > 1) | |
841 | printk(KERN_WARNING "%s: can't allocate %d bytes long " | |
842 | "skbuff\n", dev->name, skbsize); | |
843 | stats->rx_dropped++; | |
844 | insw(ioaddr, buffer, NewDatagramDataSize / 2); | |
845 | goto dropped_frame; | |
846 | } | |
847 | skb->dev = dev; | |
459a98ed | 848 | skb_reset_mac_header(skb); |
1da177e4 LT |
849 | skb->protocol = (unsigned short) buffer[NewDatagramHeaderSkip + 16]; |
850 | insw(ioaddr, skb_put(skb, NewDatagramDataSize), | |
851 | NewDatagramDataSize / 2); | |
852 | lp->rx_skb[ns] = skb; | |
853 | } else { | |
854 | /* continuation of previous datagram */ | |
855 | insw(ioaddr, buffer, ContDatagramHeaderSize / 2); | |
856 | if (buffer[0] != ContDatagramHeaderSkip) { | |
857 | if (sb1000_debug > 1) | |
858 | printk(KERN_WARNING "%s: cont datagram header skip error: " | |
859 | "got %02x expecting %02x\n", dev->name, buffer[0], | |
860 | ContDatagramHeaderSkip); | |
861 | stats->rx_length_errors++; | |
862 | insw(ioaddr, buffer, ContDatagramDataSize / 2); | |
863 | goto bad_frame_next; | |
864 | } | |
865 | skb = lp->rx_skb[ns]; | |
866 | insw(ioaddr, skb_put(skb, ContDatagramDataSize), | |
867 | ContDatagramDataSize / 2); | |
868 | dlen = lp->rx_dlen[ns]; | |
869 | } | |
870 | if (skb->len < dlen + TrailerSize) { | |
871 | lp->rx_session_id[ns] &= ~0x40; | |
872 | return 0; | |
873 | } | |
874 | ||
875 | /* datagram completed: send to upper level */ | |
876 | skb_trim(skb, dlen); | |
877 | netif_rx(skb); | |
1da177e4 LT |
878 | stats->rx_bytes+=dlen; |
879 | stats->rx_packets++; | |
880 | lp->rx_skb[ns] = NULL; | |
881 | lp->rx_session_id[ns] |= 0x40; | |
882 | return 0; | |
883 | ||
884 | bad_frame: | |
885 | insw(ioaddr, buffer, FrameSize / 2); | |
886 | if (sb1000_debug > 1) | |
887 | printk(KERN_WARNING "%s: frame error: got %02x %02x\n", | |
888 | dev->name, st[0], st[1]); | |
889 | stats->rx_frame_errors++; | |
890 | bad_frame_next: | |
891 | if (sb1000_debug > 2) | |
892 | sb1000_print_status_buffer(dev->name, st, buffer, FrameSize); | |
893 | dropped_frame: | |
894 | stats->rx_errors++; | |
895 | if (ns < NPIDS) { | |
896 | if ((skb = lp->rx_skb[ns])) { | |
897 | dev_kfree_skb(skb); | |
898 | lp->rx_skb[ns] = NULL; | |
899 | } | |
900 | lp->rx_session_id[ns] |= 0x40; | |
901 | } | |
902 | return -1; | |
903 | } | |
904 | ||
a8d06342 | 905 | static void |
1da177e4 LT |
906 | sb1000_error_dpc(struct net_device *dev) |
907 | { | |
7dd73bbc DV |
908 | static const unsigned char Command0[6] = {0x80, 0x26, 0x00, 0x00, 0x00, 0x00}; |
909 | ||
1da177e4 LT |
910 | char *name; |
911 | unsigned char st[5]; | |
912 | int ioaddr[2]; | |
913 | struct sb1000_private *lp = netdev_priv(dev); | |
1da177e4 LT |
914 | const int ErrorDpcCounterInitialize = 200; |
915 | ||
916 | ioaddr[0] = dev->base_addr; | |
917 | /* mem_start holds the second I/O address */ | |
918 | ioaddr[1] = dev->mem_start; | |
919 | name = dev->name; | |
920 | ||
921 | sb1000_wait_for_ready_clear(ioaddr, name); | |
922 | sb1000_send_command(ioaddr, name, Command0); | |
923 | sb1000_wait_for_ready(ioaddr, name); | |
924 | sb1000_read_status(ioaddr, st); | |
925 | if (st[1] & 0x10) | |
926 | lp->rx_error_dpc_count = ErrorDpcCounterInitialize; | |
927 | return; | |
928 | } | |
929 | ||
6aa20a22 | 930 | |
1da177e4 LT |
931 | /* |
932 | * Linux interface functions | |
933 | */ | |
934 | static int | |
935 | sb1000_open(struct net_device *dev) | |
936 | { | |
937 | char *name; | |
938 | int ioaddr[2], status; | |
939 | struct sb1000_private *lp = netdev_priv(dev); | |
940 | const unsigned short FirmwareVersion[] = {0x01, 0x01}; | |
941 | ||
942 | ioaddr[0] = dev->base_addr; | |
943 | /* mem_start holds the second I/O address */ | |
944 | ioaddr[1] = dev->mem_start; | |
945 | name = dev->name; | |
946 | ||
947 | /* initialize sb1000 */ | |
948 | if ((status = sb1000_reset(ioaddr, name))) | |
949 | return status; | |
a26c074c | 950 | ssleep(1); |
1da177e4 LT |
951 | if ((status = sb1000_check_CRC(ioaddr, name))) |
952 | return status; | |
953 | ||
954 | /* initialize private data before board can catch interrupts */ | |
955 | lp->rx_skb[0] = NULL; | |
956 | lp->rx_skb[1] = NULL; | |
957 | lp->rx_skb[2] = NULL; | |
958 | lp->rx_skb[3] = NULL; | |
959 | lp->rx_dlen[0] = 0; | |
960 | lp->rx_dlen[1] = 0; | |
961 | lp->rx_dlen[2] = 0; | |
962 | lp->rx_dlen[3] = 0; | |
963 | lp->rx_frames = 0; | |
964 | lp->rx_error_count = 0; | |
965 | lp->rx_error_dpc_count = 0; | |
966 | lp->rx_session_id[0] = 0x50; | |
967 | lp->rx_session_id[0] = 0x48; | |
968 | lp->rx_session_id[0] = 0x44; | |
969 | lp->rx_session_id[0] = 0x42; | |
970 | lp->rx_frame_id[0] = 0; | |
971 | lp->rx_frame_id[1] = 0; | |
972 | lp->rx_frame_id[2] = 0; | |
973 | lp->rx_frame_id[3] = 0; | |
974 | if (request_irq(dev->irq, &sb1000_interrupt, 0, "sb1000", dev)) { | |
975 | return -EAGAIN; | |
976 | } | |
977 | ||
978 | if (sb1000_debug > 2) | |
979 | printk(KERN_DEBUG "%s: Opening, IRQ %d\n", name, dev->irq); | |
980 | ||
981 | /* Activate board and check firmware version */ | |
982 | udelay(1000); | |
983 | if ((status = sb1000_activate(ioaddr, name))) | |
984 | return status; | |
985 | udelay(0); | |
986 | if ((status = sb1000_get_firmware_version(ioaddr, name, version, 0))) | |
987 | return status; | |
988 | if (version[0] != FirmwareVersion[0] || version[1] != FirmwareVersion[1]) | |
989 | printk(KERN_WARNING "%s: found firmware version %x.%02x " | |
990 | "(should be %x.%02x)\n", name, version[0], version[1], | |
991 | FirmwareVersion[0], FirmwareVersion[1]); | |
992 | ||
993 | ||
994 | netif_start_queue(dev); | |
995 | return 0; /* Always succeed */ | |
996 | } | |
997 | ||
998 | static int sb1000_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) | |
999 | { | |
1000 | char* name; | |
1001 | unsigned char version[2]; | |
1002 | short PID[4]; | |
1003 | int ioaddr[2], status, frequency; | |
1004 | unsigned int stats[5]; | |
1005 | struct sb1000_private *lp = netdev_priv(dev); | |
1006 | ||
1007 | if (!(dev && dev->flags & IFF_UP)) | |
1008 | return -ENODEV; | |
1009 | ||
1010 | ioaddr[0] = dev->base_addr; | |
1011 | /* mem_start holds the second I/O address */ | |
1012 | ioaddr[1] = dev->mem_start; | |
1013 | name = dev->name; | |
1014 | ||
1015 | switch (cmd) { | |
1016 | case SIOCGCMSTATS: /* get statistics */ | |
09f75cd7 | 1017 | stats[0] = dev->stats.rx_bytes; |
1da177e4 | 1018 | stats[1] = lp->rx_frames; |
09f75cd7 JG |
1019 | stats[2] = dev->stats.rx_packets; |
1020 | stats[3] = dev->stats.rx_errors; | |
1021 | stats[4] = dev->stats.rx_dropped; | |
1da177e4 LT |
1022 | if(copy_to_user(ifr->ifr_data, stats, sizeof(stats))) |
1023 | return -EFAULT; | |
1024 | status = 0; | |
1025 | break; | |
1026 | ||
1027 | case SIOCGCMFIRMWARE: /* get firmware version */ | |
1028 | if ((status = sb1000_get_firmware_version(ioaddr, name, version, 1))) | |
1029 | return status; | |
1030 | if(copy_to_user(ifr->ifr_data, version, sizeof(version))) | |
1031 | return -EFAULT; | |
1032 | break; | |
1033 | ||
1034 | case SIOCGCMFREQUENCY: /* get frequency */ | |
1035 | if ((status = sb1000_get_frequency(ioaddr, name, &frequency))) | |
1036 | return status; | |
1037 | if(put_user(frequency, (int __user *) ifr->ifr_data)) | |
1038 | return -EFAULT; | |
1039 | break; | |
1040 | ||
1041 | case SIOCSCMFREQUENCY: /* set frequency */ | |
1042 | if (!capable(CAP_NET_ADMIN)) | |
1043 | return -EPERM; | |
1044 | if(get_user(frequency, (int __user *) ifr->ifr_data)) | |
1045 | return -EFAULT; | |
1046 | if ((status = sb1000_set_frequency(ioaddr, name, frequency))) | |
1047 | return status; | |
1048 | break; | |
1049 | ||
1050 | case SIOCGCMPIDS: /* get PIDs */ | |
1051 | if ((status = sb1000_get_PIDs(ioaddr, name, PID))) | |
1052 | return status; | |
1053 | if(copy_to_user(ifr->ifr_data, PID, sizeof(PID))) | |
1054 | return -EFAULT; | |
1055 | break; | |
1056 | ||
1057 | case SIOCSCMPIDS: /* set PIDs */ | |
1058 | if (!capable(CAP_NET_ADMIN)) | |
1059 | return -EPERM; | |
1060 | if(copy_from_user(PID, ifr->ifr_data, sizeof(PID))) | |
1061 | return -EFAULT; | |
1062 | if ((status = sb1000_set_PIDs(ioaddr, name, PID))) | |
1063 | return status; | |
1064 | /* set session_id, frame_id and pkt_type too */ | |
1065 | lp->rx_session_id[0] = 0x50 | (PID[0] & 0x0f); | |
1066 | lp->rx_session_id[1] = 0x48; | |
1067 | lp->rx_session_id[2] = 0x44; | |
1068 | lp->rx_session_id[3] = 0x42; | |
1069 | lp->rx_frame_id[0] = 0; | |
1070 | lp->rx_frame_id[1] = 0; | |
1071 | lp->rx_frame_id[2] = 0; | |
1072 | lp->rx_frame_id[3] = 0; | |
1073 | break; | |
1074 | ||
1075 | default: | |
1076 | status = -EINVAL; | |
1077 | break; | |
1078 | } | |
1079 | return status; | |
1080 | } | |
1081 | ||
1082 | /* transmit function: do nothing since SB1000 can't send anything out */ | |
1083 | static int | |
1084 | sb1000_start_xmit(struct sk_buff *skb, struct net_device *dev) | |
1085 | { | |
1086 | printk(KERN_WARNING "%s: trying to transmit!!!\n", dev->name); | |
1087 | /* sb1000 can't xmit datagrams */ | |
1088 | dev_kfree_skb(skb); | |
1089 | return 0; | |
1090 | } | |
1091 | ||
1092 | /* SB1000 interrupt handler. */ | |
7d12e780 | 1093 | static irqreturn_t sb1000_interrupt(int irq, void *dev_id) |
1da177e4 | 1094 | { |
7dd73bbc DV |
1095 | static const unsigned char Command0[6] = {0x80, 0x2c, 0x00, 0x00, 0x00, 0x00}; |
1096 | static const unsigned char Command1[6] = {0x80, 0x2e, 0x00, 0x00, 0x00, 0x00}; | |
1097 | ||
1da177e4 LT |
1098 | char *name; |
1099 | unsigned char st; | |
1100 | int ioaddr[2]; | |
c31f28e7 | 1101 | struct net_device *dev = dev_id; |
1da177e4 LT |
1102 | struct sb1000_private *lp = netdev_priv(dev); |
1103 | ||
1da177e4 LT |
1104 | const int MaxRxErrorCount = 6; |
1105 | ||
1da177e4 LT |
1106 | ioaddr[0] = dev->base_addr; |
1107 | /* mem_start holds the second I/O address */ | |
1108 | ioaddr[1] = dev->mem_start; | |
1109 | name = dev->name; | |
1110 | ||
1111 | /* is it a good interrupt? */ | |
1112 | st = inb(ioaddr[1] + 6); | |
1113 | if (!(st & 0x08 && st & 0x20)) { | |
1114 | return IRQ_NONE; | |
1115 | } | |
1116 | ||
1117 | if (sb1000_debug > 3) | |
1118 | printk(KERN_DEBUG "%s: entering interrupt\n", dev->name); | |
1119 | ||
1120 | st = inb(ioaddr[0] + 7); | |
1121 | if (sb1000_rx(dev)) | |
1122 | lp->rx_error_count++; | |
1123 | #ifdef SB1000_DELAY | |
1124 | udelay(SB1000_DELAY); | |
1125 | #endif /* SB1000_DELAY */ | |
1126 | sb1000_issue_read_command(ioaddr, name); | |
1127 | if (st & 0x01) { | |
1128 | sb1000_error_dpc(dev); | |
1129 | sb1000_issue_read_command(ioaddr, name); | |
1130 | } | |
1131 | if (lp->rx_error_dpc_count && !(--lp->rx_error_dpc_count)) { | |
1132 | sb1000_wait_for_ready_clear(ioaddr, name); | |
1133 | sb1000_send_command(ioaddr, name, Command0); | |
1134 | sb1000_wait_for_ready(ioaddr, name); | |
1135 | sb1000_issue_read_command(ioaddr, name); | |
1136 | } | |
1137 | if (lp->rx_error_count >= MaxRxErrorCount) { | |
1138 | sb1000_wait_for_ready_clear(ioaddr, name); | |
1139 | sb1000_send_command(ioaddr, name, Command1); | |
1140 | sb1000_wait_for_ready(ioaddr, name); | |
1141 | sb1000_issue_read_command(ioaddr, name); | |
1142 | lp->rx_error_count = 0; | |
1143 | } | |
1144 | ||
1145 | return IRQ_HANDLED; | |
1146 | } | |
1147 | ||
1da177e4 LT |
1148 | static int sb1000_close(struct net_device *dev) |
1149 | { | |
1150 | int i; | |
1151 | int ioaddr[2]; | |
1152 | struct sb1000_private *lp = netdev_priv(dev); | |
1153 | ||
1154 | if (sb1000_debug > 2) | |
1155 | printk(KERN_DEBUG "%s: Shutting down sb1000.\n", dev->name); | |
1156 | ||
1157 | netif_stop_queue(dev); | |
6aa20a22 | 1158 | |
1da177e4 LT |
1159 | ioaddr[0] = dev->base_addr; |
1160 | /* mem_start holds the second I/O address */ | |
1161 | ioaddr[1] = dev->mem_start; | |
1162 | ||
1163 | free_irq(dev->irq, dev); | |
1164 | /* If we don't do this, we can't re-insmod it later. */ | |
1165 | release_region(ioaddr[1], SB1000_IO_EXTENT); | |
1166 | release_region(ioaddr[0], SB1000_IO_EXTENT); | |
1167 | ||
1168 | /* free rx_skb's if needed */ | |
1169 | for (i=0; i<4; i++) { | |
1170 | if (lp->rx_skb[i]) { | |
1171 | dev_kfree_skb(lp->rx_skb[i]); | |
1172 | } | |
1173 | } | |
1174 | return 0; | |
1175 | } | |
1176 | ||
1177 | MODULE_AUTHOR("Franco Venturi <fventuri@mediaone.net>"); | |
1178 | MODULE_DESCRIPTION("General Instruments SB1000 driver"); | |
1179 | MODULE_LICENSE("GPL"); | |
1180 | ||
1181 | static int __init | |
1182 | sb1000_init(void) | |
1183 | { | |
1184 | return pnp_register_driver(&sb1000_driver); | |
1185 | } | |
1186 | ||
1187 | static void __exit | |
1188 | sb1000_exit(void) | |
1189 | { | |
1190 | pnp_unregister_driver(&sb1000_driver); | |
1191 | } | |
1192 | ||
1193 | module_init(sb1000_init); | |
1194 | module_exit(sb1000_exit); |