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 | ||
137 | static int | |
138 | sb1000_probe_one(struct pnp_dev *pdev, const struct pnp_device_id *id) | |
139 | { | |
140 | struct net_device *dev; | |
141 | unsigned short ioaddr[2], irq; | |
142 | unsigned int serial_number; | |
143 | int error = -ENODEV; | |
6aa20a22 | 144 | |
1da177e4 LT |
145 | if (pnp_device_attach(pdev) < 0) |
146 | return -ENODEV; | |
147 | if (pnp_activate_dev(pdev) < 0) | |
148 | goto out_detach; | |
149 | ||
150 | if (!pnp_port_valid(pdev, 0) || !pnp_port_valid(pdev, 1)) | |
151 | goto out_disable; | |
152 | if (!pnp_irq_valid(pdev, 0)) | |
153 | goto out_disable; | |
6aa20a22 | 154 | |
1da177e4 | 155 | serial_number = pdev->card->serial; |
6aa20a22 | 156 | |
1da177e4 LT |
157 | ioaddr[0] = pnp_port_start(pdev, 0); |
158 | ioaddr[1] = pnp_port_start(pdev, 0); | |
6aa20a22 | 159 | |
1da177e4 LT |
160 | irq = pnp_irq(pdev, 0); |
161 | ||
162 | if (!request_region(ioaddr[0], 16, "sb1000")) | |
163 | goto out_disable; | |
164 | if (!request_region(ioaddr[1], 16, "sb1000")) | |
165 | goto out_release_region0; | |
166 | ||
167 | dev = alloc_etherdev(sizeof(struct sb1000_private)); | |
168 | if (!dev) { | |
169 | error = -ENOMEM; | |
170 | goto out_release_regions; | |
171 | } | |
172 | ||
6aa20a22 | 173 | |
1da177e4 LT |
174 | dev->base_addr = ioaddr[0]; |
175 | /* mem_start holds the second I/O address */ | |
176 | dev->mem_start = ioaddr[1]; | |
177 | dev->irq = irq; | |
178 | ||
179 | if (sb1000_debug > 0) | |
180 | printk(KERN_NOTICE "%s: sb1000 at (%#3.3lx,%#3.3lx), " | |
181 | "S/N %#8.8x, IRQ %d.\n", dev->name, dev->base_addr, | |
182 | dev->mem_start, serial_number, dev->irq); | |
183 | ||
184 | /* | |
185 | * The SB1000 is an rx-only cable modem device. The uplink is a modem | |
186 | * and we do not want to arp on it. | |
187 | */ | |
188 | dev->flags = IFF_POINTOPOINT|IFF_NOARP; | |
189 | ||
1da177e4 LT |
190 | SET_NETDEV_DEV(dev, &pdev->dev); |
191 | ||
192 | if (sb1000_debug > 0) | |
193 | printk(KERN_NOTICE "%s", version); | |
194 | ||
195 | /* The SB1000-specific entries in the device structure. */ | |
196 | dev->open = sb1000_open; | |
197 | dev->do_ioctl = sb1000_dev_ioctl; | |
198 | dev->hard_start_xmit = sb1000_start_xmit; | |
199 | dev->stop = sb1000_close; | |
1da177e4 LT |
200 | |
201 | /* hardware address is 0:0:serial_number */ | |
202 | dev->dev_addr[2] = serial_number >> 24 & 0xff; | |
203 | dev->dev_addr[3] = serial_number >> 16 & 0xff; | |
204 | dev->dev_addr[4] = serial_number >> 8 & 0xff; | |
205 | dev->dev_addr[5] = serial_number >> 0 & 0xff; | |
206 | ||
207 | pnp_set_drvdata(pdev, dev); | |
208 | ||
209 | error = register_netdev(dev); | |
210 | if (error) | |
211 | goto out_free_netdev; | |
212 | return 0; | |
213 | ||
214 | out_free_netdev: | |
215 | free_netdev(dev); | |
216 | out_release_regions: | |
217 | release_region(ioaddr[1], 16); | |
218 | out_release_region0: | |
219 | release_region(ioaddr[0], 16); | |
220 | out_disable: | |
221 | pnp_disable_dev(pdev); | |
222 | out_detach: | |
223 | pnp_device_detach(pdev); | |
224 | return error; | |
225 | } | |
226 | ||
227 | static void | |
228 | sb1000_remove_one(struct pnp_dev *pdev) | |
229 | { | |
230 | struct net_device *dev = pnp_get_drvdata(pdev); | |
231 | ||
232 | unregister_netdev(dev); | |
233 | release_region(dev->base_addr, 16); | |
234 | release_region(dev->mem_start, 16); | |
235 | free_netdev(dev); | |
236 | } | |
237 | ||
238 | static struct pnp_driver sb1000_driver = { | |
239 | .name = "sb1000", | |
240 | .id_table = sb1000_pnp_ids, | |
241 | .probe = sb1000_probe_one, | |
242 | .remove = sb1000_remove_one, | |
243 | }; | |
244 | ||
6aa20a22 | 245 | |
1da177e4 LT |
246 | /* |
247 | * SB1000 hardware routines to be used during open/configuration phases | |
248 | */ | |
249 | ||
250 | static const int TimeOutJiffies = (875 * HZ) / 100; | |
251 | ||
1da177e4 | 252 | /* Card Wait For Busy Clear (cannot be used during an interrupt) */ |
a8d06342 | 253 | static int |
1da177e4 LT |
254 | card_wait_for_busy_clear(const int ioaddr[], const char* name) |
255 | { | |
256 | unsigned char a; | |
257 | unsigned long timeout; | |
258 | ||
259 | a = inb(ioaddr[0] + 7); | |
260 | timeout = jiffies + TimeOutJiffies; | |
261 | while (a & 0x80 || a & 0x40) { | |
262 | /* a little sleep */ | |
263 | yield(); | |
264 | ||
265 | a = inb(ioaddr[0] + 7); | |
266 | if (time_after_eq(jiffies, timeout)) { | |
267 | printk(KERN_WARNING "%s: card_wait_for_busy_clear timeout\n", | |
268 | name); | |
269 | return -ETIME; | |
270 | } | |
271 | } | |
272 | ||
273 | return 0; | |
274 | } | |
275 | ||
276 | /* Card Wait For Ready (cannot be used during an interrupt) */ | |
a8d06342 | 277 | static int |
1da177e4 LT |
278 | card_wait_for_ready(const int ioaddr[], const char* name, unsigned char in[]) |
279 | { | |
280 | unsigned char a; | |
281 | unsigned long timeout; | |
282 | ||
283 | a = inb(ioaddr[1] + 6); | |
284 | timeout = jiffies + TimeOutJiffies; | |
285 | while (a & 0x80 || !(a & 0x40)) { | |
286 | /* a little sleep */ | |
287 | yield(); | |
288 | ||
289 | a = inb(ioaddr[1] + 6); | |
290 | if (time_after_eq(jiffies, timeout)) { | |
291 | printk(KERN_WARNING "%s: card_wait_for_ready timeout\n", | |
292 | name); | |
293 | return -ETIME; | |
294 | } | |
295 | } | |
296 | ||
297 | in[1] = inb(ioaddr[0] + 1); | |
298 | in[2] = inb(ioaddr[0] + 2); | |
299 | in[3] = inb(ioaddr[0] + 3); | |
300 | in[4] = inb(ioaddr[0] + 4); | |
301 | in[0] = inb(ioaddr[0] + 5); | |
302 | in[6] = inb(ioaddr[0] + 6); | |
303 | in[5] = inb(ioaddr[1] + 6); | |
304 | return 0; | |
305 | } | |
306 | ||
307 | /* Card Send Command (cannot be used during an interrupt) */ | |
858119e1 | 308 | static int |
1da177e4 LT |
309 | card_send_command(const int ioaddr[], const char* name, |
310 | const unsigned char out[], unsigned char in[]) | |
311 | { | |
312 | int status, x; | |
313 | ||
314 | if ((status = card_wait_for_busy_clear(ioaddr, name))) | |
315 | return status; | |
316 | outb(0xa0, ioaddr[0] + 6); | |
317 | outb(out[2], ioaddr[0] + 1); | |
318 | outb(out[3], ioaddr[0] + 2); | |
319 | outb(out[4], ioaddr[0] + 3); | |
320 | outb(out[5], ioaddr[0] + 4); | |
321 | outb(out[1], ioaddr[0] + 5); | |
322 | outb(0xa0, ioaddr[0] + 6); | |
323 | outb(out[0], ioaddr[0] + 7); | |
324 | if (out[0] != 0x20 && out[0] != 0x30) { | |
325 | if ((status = card_wait_for_ready(ioaddr, name, in))) | |
326 | return status; | |
327 | inb(ioaddr[0] + 7); | |
328 | if (sb1000_debug > 3) | |
329 | printk(KERN_DEBUG "%s: card_send_command " | |
330 | "out: %02x%02x%02x%02x%02x%02x " | |
331 | "in: %02x%02x%02x%02x%02x%02x%02x\n", name, | |
332 | out[0], out[1], out[2], out[3], out[4], out[5], | |
333 | in[0], in[1], in[2], in[3], in[4], in[5], in[6]); | |
334 | } else { | |
335 | if (sb1000_debug > 3) | |
336 | printk(KERN_DEBUG "%s: card_send_command " | |
337 | "out: %02x%02x%02x%02x%02x%02x\n", name, | |
338 | out[0], out[1], out[2], out[3], out[4], out[5]); | |
339 | } | |
340 | ||
341 | if (out[1] == 0x1b) { | |
342 | x = (out[2] == 0x02); | |
343 | } else { | |
344 | if (out[0] >= 0x80 && in[0] != (out[1] | 0x80)) | |
345 | return -EIO; | |
346 | } | |
347 | return 0; | |
348 | } | |
349 | ||
6aa20a22 | 350 | |
1da177e4 LT |
351 | /* |
352 | * SB1000 hardware routines to be used during frame rx interrupt | |
353 | */ | |
354 | static const int Sb1000TimeOutJiffies = 7 * HZ; | |
355 | ||
356 | /* Card Wait For Ready (to be used during frame rx) */ | |
a8d06342 | 357 | static int |
1da177e4 LT |
358 | sb1000_wait_for_ready(const int ioaddr[], const char* name) |
359 | { | |
360 | unsigned long timeout; | |
361 | ||
362 | timeout = jiffies + Sb1000TimeOutJiffies; | |
363 | while (inb(ioaddr[1] + 6) & 0x80) { | |
364 | if (time_after_eq(jiffies, timeout)) { | |
365 | printk(KERN_WARNING "%s: sb1000_wait_for_ready timeout\n", | |
366 | name); | |
367 | return -ETIME; | |
368 | } | |
369 | } | |
370 | timeout = jiffies + Sb1000TimeOutJiffies; | |
371 | while (!(inb(ioaddr[1] + 6) & 0x40)) { | |
372 | if (time_after_eq(jiffies, timeout)) { | |
373 | printk(KERN_WARNING "%s: sb1000_wait_for_ready timeout\n", | |
374 | name); | |
375 | return -ETIME; | |
376 | } | |
377 | } | |
378 | inb(ioaddr[0] + 7); | |
379 | return 0; | |
380 | } | |
381 | ||
382 | /* Card Wait For Ready Clear (to be used during frame rx) */ | |
a8d06342 | 383 | static int |
1da177e4 LT |
384 | sb1000_wait_for_ready_clear(const int ioaddr[], const char* name) |
385 | { | |
386 | unsigned long timeout; | |
387 | ||
388 | timeout = jiffies + Sb1000TimeOutJiffies; | |
389 | while (inb(ioaddr[1] + 6) & 0x80) { | |
390 | if (time_after_eq(jiffies, timeout)) { | |
391 | printk(KERN_WARNING "%s: sb1000_wait_for_ready_clear timeout\n", | |
392 | name); | |
393 | return -ETIME; | |
394 | } | |
395 | } | |
396 | timeout = jiffies + Sb1000TimeOutJiffies; | |
397 | while (inb(ioaddr[1] + 6) & 0x40) { | |
398 | if (time_after_eq(jiffies, timeout)) { | |
399 | printk(KERN_WARNING "%s: sb1000_wait_for_ready_clear timeout\n", | |
400 | name); | |
401 | return -ETIME; | |
402 | } | |
403 | } | |
404 | return 0; | |
405 | } | |
406 | ||
407 | /* Card Send Command (to be used during frame rx) */ | |
a8d06342 | 408 | static void |
1da177e4 LT |
409 | sb1000_send_command(const int ioaddr[], const char* name, |
410 | const unsigned char out[]) | |
411 | { | |
412 | outb(out[2], ioaddr[0] + 1); | |
413 | outb(out[3], ioaddr[0] + 2); | |
414 | outb(out[4], ioaddr[0] + 3); | |
415 | outb(out[5], ioaddr[0] + 4); | |
416 | outb(out[1], ioaddr[0] + 5); | |
417 | outb(out[0], ioaddr[0] + 7); | |
418 | if (sb1000_debug > 3) | |
419 | printk(KERN_DEBUG "%s: sb1000_send_command out: %02x%02x%02x%02x" | |
420 | "%02x%02x\n", name, out[0], out[1], out[2], out[3], out[4], out[5]); | |
421 | return; | |
422 | } | |
423 | ||
424 | /* Card Read Status (to be used during frame rx) */ | |
a8d06342 | 425 | static void |
1da177e4 LT |
426 | sb1000_read_status(const int ioaddr[], unsigned char in[]) |
427 | { | |
428 | in[1] = inb(ioaddr[0] + 1); | |
429 | in[2] = inb(ioaddr[0] + 2); | |
430 | in[3] = inb(ioaddr[0] + 3); | |
431 | in[4] = inb(ioaddr[0] + 4); | |
432 | in[0] = inb(ioaddr[0] + 5); | |
433 | return; | |
434 | } | |
435 | ||
436 | /* Issue Read Command (to be used during frame rx) */ | |
a8d06342 | 437 | static void |
1da177e4 LT |
438 | sb1000_issue_read_command(const int ioaddr[], const char* name) |
439 | { | |
7dd73bbc | 440 | static const unsigned char Command0[6] = {0x20, 0x00, 0x00, 0x01, 0x00, 0x00}; |
1da177e4 LT |
441 | |
442 | sb1000_wait_for_ready_clear(ioaddr, name); | |
443 | outb(0xa0, ioaddr[0] + 6); | |
444 | sb1000_send_command(ioaddr, name, Command0); | |
445 | return; | |
446 | } | |
447 | ||
6aa20a22 | 448 | |
1da177e4 LT |
449 | /* |
450 | * SB1000 commands for open/configuration | |
451 | */ | |
452 | /* reset SB1000 card */ | |
a8d06342 | 453 | static int |
1da177e4 LT |
454 | sb1000_reset(const int ioaddr[], const char* name) |
455 | { | |
7dd73bbc DV |
456 | static const unsigned char Command0[6] = {0x80, 0x16, 0x00, 0x00, 0x00, 0x00}; |
457 | ||
1da177e4 LT |
458 | unsigned char st[7]; |
459 | int port, status; | |
1da177e4 LT |
460 | |
461 | port = ioaddr[1] + 6; | |
462 | outb(0x4, port); | |
463 | inb(port); | |
464 | udelay(1000); | |
465 | outb(0x0, port); | |
466 | inb(port); | |
a26c074c | 467 | ssleep(1); |
1da177e4 LT |
468 | outb(0x4, port); |
469 | inb(port); | |
470 | udelay(1000); | |
471 | outb(0x0, port); | |
472 | inb(port); | |
473 | udelay(0); | |
474 | ||
475 | if ((status = card_send_command(ioaddr, name, Command0, st))) | |
476 | return status; | |
477 | if (st[3] != 0xf0) | |
478 | return -EIO; | |
479 | return 0; | |
480 | } | |
481 | ||
482 | /* check SB1000 firmware CRC */ | |
a8d06342 | 483 | static int |
1da177e4 LT |
484 | sb1000_check_CRC(const int ioaddr[], const char* name) |
485 | { | |
7dd73bbc DV |
486 | static const unsigned char Command0[6] = {0x80, 0x1f, 0x00, 0x00, 0x00, 0x00}; |
487 | ||
1da177e4 LT |
488 | unsigned char st[7]; |
489 | int crc, status; | |
1da177e4 LT |
490 | |
491 | /* check CRC */ | |
492 | if ((status = card_send_command(ioaddr, name, Command0, st))) | |
493 | return status; | |
494 | if (st[1] != st[3] || st[2] != st[4]) | |
495 | return -EIO; | |
496 | crc = st[1] << 8 | st[2]; | |
497 | return 0; | |
498 | } | |
499 | ||
500 | static inline int | |
501 | sb1000_start_get_set_command(const int ioaddr[], const char* name) | |
502 | { | |
7dd73bbc DV |
503 | static const unsigned char Command0[6] = {0x80, 0x1b, 0x00, 0x00, 0x00, 0x00}; |
504 | ||
1da177e4 | 505 | unsigned char st[7]; |
1da177e4 LT |
506 | |
507 | return card_send_command(ioaddr, name, Command0, st); | |
508 | } | |
509 | ||
a8d06342 | 510 | static int |
1da177e4 LT |
511 | sb1000_end_get_set_command(const int ioaddr[], const char* name) |
512 | { | |
7dd73bbc DV |
513 | static const unsigned char Command0[6] = {0x80, 0x1b, 0x02, 0x00, 0x00, 0x00}; |
514 | static const unsigned char Command1[6] = {0x20, 0x00, 0x00, 0x00, 0x00, 0x00}; | |
515 | ||
1da177e4 LT |
516 | unsigned char st[7]; |
517 | int status; | |
1da177e4 LT |
518 | |
519 | if ((status = card_send_command(ioaddr, name, Command0, st))) | |
520 | return status; | |
521 | return card_send_command(ioaddr, name, Command1, st); | |
522 | } | |
523 | ||
a8d06342 | 524 | static int |
1da177e4 LT |
525 | sb1000_activate(const int ioaddr[], const char* name) |
526 | { | |
7dd73bbc DV |
527 | static const unsigned char Command0[6] = {0x80, 0x11, 0x00, 0x00, 0x00, 0x00}; |
528 | static const unsigned char Command1[6] = {0x80, 0x16, 0x00, 0x00, 0x00, 0x00}; | |
529 | ||
1da177e4 LT |
530 | unsigned char st[7]; |
531 | int status; | |
1da177e4 | 532 | |
a26c074c | 533 | ssleep(1); |
1da177e4 LT |
534 | if ((status = card_send_command(ioaddr, name, Command0, st))) |
535 | return status; | |
536 | if ((status = card_send_command(ioaddr, name, Command1, st))) | |
537 | return status; | |
538 | if (st[3] != 0xf1) { | |
539 | if ((status = sb1000_start_get_set_command(ioaddr, name))) | |
540 | return status; | |
541 | return -EIO; | |
542 | } | |
543 | udelay(1000); | |
544 | return sb1000_start_get_set_command(ioaddr, name); | |
545 | } | |
546 | ||
547 | /* get SB1000 firmware version */ | |
548 | static int | |
549 | sb1000_get_firmware_version(const int ioaddr[], const char* name, | |
550 | unsigned char version[], int do_end) | |
551 | { | |
7dd73bbc DV |
552 | static const unsigned char Command0[6] = {0x80, 0x23, 0x00, 0x00, 0x00, 0x00}; |
553 | ||
1da177e4 LT |
554 | unsigned char st[7]; |
555 | int status; | |
1da177e4 LT |
556 | |
557 | if ((status = sb1000_start_get_set_command(ioaddr, name))) | |
558 | return status; | |
559 | if ((status = card_send_command(ioaddr, name, Command0, st))) | |
560 | return status; | |
561 | if (st[0] != 0xa3) | |
562 | return -EIO; | |
563 | version[0] = st[1]; | |
564 | version[1] = st[2]; | |
565 | if (do_end) | |
566 | return sb1000_end_get_set_command(ioaddr, name); | |
567 | else | |
568 | return 0; | |
569 | } | |
570 | ||
571 | /* get SB1000 frequency */ | |
572 | static int | |
573 | sb1000_get_frequency(const int ioaddr[], const char* name, int* frequency) | |
574 | { | |
7dd73bbc DV |
575 | static const unsigned char Command0[6] = {0x80, 0x44, 0x00, 0x00, 0x00, 0x00}; |
576 | ||
1da177e4 LT |
577 | unsigned char st[7]; |
578 | int status; | |
1da177e4 LT |
579 | |
580 | udelay(1000); | |
581 | if ((status = sb1000_start_get_set_command(ioaddr, name))) | |
582 | return status; | |
583 | if ((status = card_send_command(ioaddr, name, Command0, st))) | |
584 | return status; | |
585 | *frequency = ((st[1] << 8 | st[2]) << 8 | st[3]) << 8 | st[4]; | |
586 | return sb1000_end_get_set_command(ioaddr, name); | |
587 | } | |
588 | ||
589 | /* set SB1000 frequency */ | |
590 | static int | |
591 | sb1000_set_frequency(const int ioaddr[], const char* name, int frequency) | |
592 | { | |
593 | unsigned char st[7]; | |
594 | int status; | |
595 | unsigned char Command0[6] = {0x80, 0x29, 0x00, 0x00, 0x00, 0x00}; | |
596 | ||
597 | const int FrequencyLowerLimit = 57000; | |
598 | const int FrequencyUpperLimit = 804000; | |
599 | ||
600 | if (frequency < FrequencyLowerLimit || frequency > FrequencyUpperLimit) { | |
601 | printk(KERN_ERR "%s: frequency chosen (%d kHz) is not in the range " | |
602 | "[%d,%d] kHz\n", name, frequency, FrequencyLowerLimit, | |
603 | FrequencyUpperLimit); | |
604 | return -EINVAL; | |
605 | } | |
606 | udelay(1000); | |
607 | if ((status = sb1000_start_get_set_command(ioaddr, name))) | |
608 | return status; | |
609 | Command0[5] = frequency & 0xff; | |
610 | frequency >>= 8; | |
611 | Command0[4] = frequency & 0xff; | |
612 | frequency >>= 8; | |
613 | Command0[3] = frequency & 0xff; | |
614 | frequency >>= 8; | |
615 | Command0[2] = frequency & 0xff; | |
616 | return card_send_command(ioaddr, name, Command0, st); | |
617 | } | |
618 | ||
619 | /* get SB1000 PIDs */ | |
620 | static int | |
621 | sb1000_get_PIDs(const int ioaddr[], const char* name, short PID[]) | |
622 | { | |
7dd73bbc DV |
623 | static const unsigned char Command0[6] = {0x80, 0x40, 0x00, 0x00, 0x00, 0x00}; |
624 | static const unsigned char Command1[6] = {0x80, 0x41, 0x00, 0x00, 0x00, 0x00}; | |
625 | static const unsigned char Command2[6] = {0x80, 0x42, 0x00, 0x00, 0x00, 0x00}; | |
626 | static const unsigned char Command3[6] = {0x80, 0x43, 0x00, 0x00, 0x00, 0x00}; | |
627 | ||
1da177e4 LT |
628 | unsigned char st[7]; |
629 | int status; | |
1da177e4 LT |
630 | |
631 | udelay(1000); | |
632 | if ((status = sb1000_start_get_set_command(ioaddr, name))) | |
633 | return status; | |
634 | ||
635 | if ((status = card_send_command(ioaddr, name, Command0, st))) | |
636 | return status; | |
637 | PID[0] = st[1] << 8 | st[2]; | |
638 | ||
639 | if ((status = card_send_command(ioaddr, name, Command1, st))) | |
640 | return status; | |
641 | PID[1] = st[1] << 8 | st[2]; | |
642 | ||
643 | if ((status = card_send_command(ioaddr, name, Command2, st))) | |
644 | return status; | |
645 | PID[2] = st[1] << 8 | st[2]; | |
646 | ||
647 | if ((status = card_send_command(ioaddr, name, Command3, st))) | |
648 | return status; | |
649 | PID[3] = st[1] << 8 | st[2]; | |
650 | ||
651 | return sb1000_end_get_set_command(ioaddr, name); | |
652 | } | |
653 | ||
654 | /* set SB1000 PIDs */ | |
655 | static int | |
656 | sb1000_set_PIDs(const int ioaddr[], const char* name, const short PID[]) | |
657 | { | |
7dd73bbc DV |
658 | static const unsigned char Command4[6] = {0x80, 0x2e, 0x00, 0x00, 0x00, 0x00}; |
659 | ||
1da177e4 LT |
660 | unsigned char st[7]; |
661 | short p; | |
662 | int status; | |
663 | unsigned char Command0[6] = {0x80, 0x31, 0x00, 0x00, 0x00, 0x00}; | |
664 | unsigned char Command1[6] = {0x80, 0x32, 0x00, 0x00, 0x00, 0x00}; | |
665 | unsigned char Command2[6] = {0x80, 0x33, 0x00, 0x00, 0x00, 0x00}; | |
666 | unsigned char Command3[6] = {0x80, 0x34, 0x00, 0x00, 0x00, 0x00}; | |
1da177e4 LT |
667 | |
668 | udelay(1000); | |
669 | if ((status = sb1000_start_get_set_command(ioaddr, name))) | |
670 | return status; | |
671 | ||
672 | p = PID[0]; | |
673 | Command0[3] = p & 0xff; | |
674 | p >>= 8; | |
675 | Command0[2] = p & 0xff; | |
676 | if ((status = card_send_command(ioaddr, name, Command0, st))) | |
677 | return status; | |
678 | ||
679 | p = PID[1]; | |
680 | Command1[3] = p & 0xff; | |
681 | p >>= 8; | |
682 | Command1[2] = p & 0xff; | |
683 | if ((status = card_send_command(ioaddr, name, Command1, st))) | |
684 | return status; | |
685 | ||
686 | p = PID[2]; | |
687 | Command2[3] = p & 0xff; | |
688 | p >>= 8; | |
689 | Command2[2] = p & 0xff; | |
690 | if ((status = card_send_command(ioaddr, name, Command2, st))) | |
691 | return status; | |
692 | ||
693 | p = PID[3]; | |
694 | Command3[3] = p & 0xff; | |
695 | p >>= 8; | |
696 | Command3[2] = p & 0xff; | |
697 | if ((status = card_send_command(ioaddr, name, Command3, st))) | |
698 | return status; | |
699 | ||
700 | if ((status = card_send_command(ioaddr, name, Command4, st))) | |
701 | return status; | |
702 | return sb1000_end_get_set_command(ioaddr, name); | |
703 | } | |
704 | ||
6aa20a22 | 705 | |
a8d06342 | 706 | static void |
1da177e4 LT |
707 | sb1000_print_status_buffer(const char* name, unsigned char st[], |
708 | unsigned char buffer[], int size) | |
709 | { | |
710 | int i, j, k; | |
711 | ||
712 | printk(KERN_DEBUG "%s: status: %02x %02x\n", name, st[0], st[1]); | |
713 | if (buffer[24] == 0x08 && buffer[25] == 0x00 && buffer[26] == 0x45) { | |
714 | printk(KERN_DEBUG "%s: length: %d protocol: %d from: %d.%d.%d.%d:%d " | |
715 | "to %d.%d.%d.%d:%d\n", name, buffer[28] << 8 | buffer[29], | |
716 | buffer[35], buffer[38], buffer[39], buffer[40], buffer[41], | |
717 | buffer[46] << 8 | buffer[47], | |
718 | buffer[42], buffer[43], buffer[44], buffer[45], | |
719 | buffer[48] << 8 | buffer[49]); | |
720 | } else { | |
721 | for (i = 0, k = 0; i < (size + 7) / 8; i++) { | |
722 | printk(KERN_DEBUG "%s: %s", name, i ? " " : "buffer:"); | |
723 | for (j = 0; j < 8 && k < size; j++, k++) | |
724 | printk(" %02x", buffer[k]); | |
725 | printk("\n"); | |
726 | } | |
727 | } | |
728 | return; | |
729 | } | |
730 | ||
731 | /* | |
732 | * SB1000 commands for frame rx interrupt | |
733 | */ | |
734 | /* receive a single frame and assemble datagram | |
735 | * (this is the heart of the interrupt routine) | |
736 | */ | |
a8d06342 | 737 | static int |
1da177e4 LT |
738 | sb1000_rx(struct net_device *dev) |
739 | { | |
740 | ||
741 | #define FRAMESIZE 184 | |
742 | unsigned char st[2], buffer[FRAMESIZE], session_id, frame_id; | |
743 | short dlen; | |
744 | int ioaddr, ns; | |
745 | unsigned int skbsize; | |
746 | struct sk_buff *skb; | |
747 | struct sb1000_private *lp = netdev_priv(dev); | |
09f75cd7 | 748 | struct net_device_stats *stats = &dev->stats; |
1da177e4 LT |
749 | |
750 | /* SB1000 frame constants */ | |
751 | const int FrameSize = FRAMESIZE; | |
752 | const int NewDatagramHeaderSkip = 8; | |
753 | const int NewDatagramHeaderSize = NewDatagramHeaderSkip + 18; | |
754 | const int NewDatagramDataSize = FrameSize - NewDatagramHeaderSize; | |
755 | const int ContDatagramHeaderSkip = 7; | |
756 | const int ContDatagramHeaderSize = ContDatagramHeaderSkip + 1; | |
757 | const int ContDatagramDataSize = FrameSize - ContDatagramHeaderSize; | |
758 | const int TrailerSize = 4; | |
759 | ||
760 | ioaddr = dev->base_addr; | |
761 | ||
762 | insw(ioaddr, (unsigned short*) st, 1); | |
763 | #ifdef XXXDEBUG | |
764 | printk("cm0: received: %02x %02x\n", st[0], st[1]); | |
765 | #endif /* XXXDEBUG */ | |
766 | lp->rx_frames++; | |
767 | ||
768 | /* decide if it is a good or bad frame */ | |
769 | for (ns = 0; ns < NPIDS; ns++) { | |
770 | session_id = lp->rx_session_id[ns]; | |
771 | frame_id = lp->rx_frame_id[ns]; | |
772 | if (st[0] == session_id) { | |
773 | if (st[1] == frame_id || (!frame_id && (st[1] & 0xf0) == 0x30)) { | |
774 | goto good_frame; | |
775 | } else if ((st[1] & 0xf0) == 0x30 && (st[0] & 0x40)) { | |
776 | goto skipped_frame; | |
777 | } else { | |
778 | goto bad_frame; | |
779 | } | |
780 | } else if (st[0] == (session_id | 0x40)) { | |
781 | if ((st[1] & 0xf0) == 0x30) { | |
782 | goto skipped_frame; | |
783 | } else { | |
784 | goto bad_frame; | |
785 | } | |
786 | } | |
787 | } | |
788 | goto bad_frame; | |
789 | ||
790 | skipped_frame: | |
791 | stats->rx_frame_errors++; | |
792 | skb = lp->rx_skb[ns]; | |
793 | if (sb1000_debug > 1) | |
794 | printk(KERN_WARNING "%s: missing frame(s): got %02x %02x " | |
795 | "expecting %02x %02x\n", dev->name, st[0], st[1], | |
796 | skb ? session_id : session_id | 0x40, frame_id); | |
797 | if (skb) { | |
798 | dev_kfree_skb(skb); | |
799 | skb = NULL; | |
800 | } | |
801 | ||
802 | good_frame: | |
803 | lp->rx_frame_id[ns] = 0x30 | ((st[1] + 1) & 0x0f); | |
804 | /* new datagram */ | |
805 | if (st[0] & 0x40) { | |
806 | /* get data length */ | |
807 | insw(ioaddr, buffer, NewDatagramHeaderSize / 2); | |
808 | #ifdef XXXDEBUG | |
809 | printk("cm0: IP identification: %02x%02x fragment offset: %02x%02x\n", buffer[30], buffer[31], buffer[32], buffer[33]); | |
810 | #endif /* XXXDEBUG */ | |
811 | if (buffer[0] != NewDatagramHeaderSkip) { | |
812 | if (sb1000_debug > 1) | |
813 | printk(KERN_WARNING "%s: new datagram header skip error: " | |
814 | "got %02x expecting %02x\n", dev->name, buffer[0], | |
815 | NewDatagramHeaderSkip); | |
816 | stats->rx_length_errors++; | |
817 | insw(ioaddr, buffer, NewDatagramDataSize / 2); | |
818 | goto bad_frame_next; | |
819 | } | |
820 | dlen = ((buffer[NewDatagramHeaderSkip + 3] & 0x0f) << 8 | | |
821 | buffer[NewDatagramHeaderSkip + 4]) - 17; | |
822 | if (dlen > SB1000_MRU) { | |
823 | if (sb1000_debug > 1) | |
824 | printk(KERN_WARNING "%s: datagram length (%d) greater " | |
825 | "than MRU (%d)\n", dev->name, dlen, SB1000_MRU); | |
826 | stats->rx_length_errors++; | |
827 | insw(ioaddr, buffer, NewDatagramDataSize / 2); | |
828 | goto bad_frame_next; | |
829 | } | |
830 | lp->rx_dlen[ns] = dlen; | |
831 | /* compute size to allocate for datagram */ | |
832 | skbsize = dlen + FrameSize; | |
833 | if ((skb = alloc_skb(skbsize, GFP_ATOMIC)) == NULL) { | |
834 | if (sb1000_debug > 1) | |
835 | printk(KERN_WARNING "%s: can't allocate %d bytes long " | |
836 | "skbuff\n", dev->name, skbsize); | |
837 | stats->rx_dropped++; | |
838 | insw(ioaddr, buffer, NewDatagramDataSize / 2); | |
839 | goto dropped_frame; | |
840 | } | |
841 | skb->dev = dev; | |
459a98ed | 842 | skb_reset_mac_header(skb); |
1da177e4 LT |
843 | skb->protocol = (unsigned short) buffer[NewDatagramHeaderSkip + 16]; |
844 | insw(ioaddr, skb_put(skb, NewDatagramDataSize), | |
845 | NewDatagramDataSize / 2); | |
846 | lp->rx_skb[ns] = skb; | |
847 | } else { | |
848 | /* continuation of previous datagram */ | |
849 | insw(ioaddr, buffer, ContDatagramHeaderSize / 2); | |
850 | if (buffer[0] != ContDatagramHeaderSkip) { | |
851 | if (sb1000_debug > 1) | |
852 | printk(KERN_WARNING "%s: cont datagram header skip error: " | |
853 | "got %02x expecting %02x\n", dev->name, buffer[0], | |
854 | ContDatagramHeaderSkip); | |
855 | stats->rx_length_errors++; | |
856 | insw(ioaddr, buffer, ContDatagramDataSize / 2); | |
857 | goto bad_frame_next; | |
858 | } | |
859 | skb = lp->rx_skb[ns]; | |
860 | insw(ioaddr, skb_put(skb, ContDatagramDataSize), | |
861 | ContDatagramDataSize / 2); | |
862 | dlen = lp->rx_dlen[ns]; | |
863 | } | |
864 | if (skb->len < dlen + TrailerSize) { | |
865 | lp->rx_session_id[ns] &= ~0x40; | |
866 | return 0; | |
867 | } | |
868 | ||
869 | /* datagram completed: send to upper level */ | |
870 | skb_trim(skb, dlen); | |
871 | netif_rx(skb); | |
1da177e4 LT |
872 | stats->rx_bytes+=dlen; |
873 | stats->rx_packets++; | |
874 | lp->rx_skb[ns] = NULL; | |
875 | lp->rx_session_id[ns] |= 0x40; | |
876 | return 0; | |
877 | ||
878 | bad_frame: | |
879 | insw(ioaddr, buffer, FrameSize / 2); | |
880 | if (sb1000_debug > 1) | |
881 | printk(KERN_WARNING "%s: frame error: got %02x %02x\n", | |
882 | dev->name, st[0], st[1]); | |
883 | stats->rx_frame_errors++; | |
884 | bad_frame_next: | |
885 | if (sb1000_debug > 2) | |
886 | sb1000_print_status_buffer(dev->name, st, buffer, FrameSize); | |
887 | dropped_frame: | |
888 | stats->rx_errors++; | |
889 | if (ns < NPIDS) { | |
890 | if ((skb = lp->rx_skb[ns])) { | |
891 | dev_kfree_skb(skb); | |
892 | lp->rx_skb[ns] = NULL; | |
893 | } | |
894 | lp->rx_session_id[ns] |= 0x40; | |
895 | } | |
896 | return -1; | |
897 | } | |
898 | ||
a8d06342 | 899 | static void |
1da177e4 LT |
900 | sb1000_error_dpc(struct net_device *dev) |
901 | { | |
7dd73bbc DV |
902 | static const unsigned char Command0[6] = {0x80, 0x26, 0x00, 0x00, 0x00, 0x00}; |
903 | ||
1da177e4 LT |
904 | char *name; |
905 | unsigned char st[5]; | |
906 | int ioaddr[2]; | |
907 | struct sb1000_private *lp = netdev_priv(dev); | |
1da177e4 LT |
908 | const int ErrorDpcCounterInitialize = 200; |
909 | ||
910 | ioaddr[0] = dev->base_addr; | |
911 | /* mem_start holds the second I/O address */ | |
912 | ioaddr[1] = dev->mem_start; | |
913 | name = dev->name; | |
914 | ||
915 | sb1000_wait_for_ready_clear(ioaddr, name); | |
916 | sb1000_send_command(ioaddr, name, Command0); | |
917 | sb1000_wait_for_ready(ioaddr, name); | |
918 | sb1000_read_status(ioaddr, st); | |
919 | if (st[1] & 0x10) | |
920 | lp->rx_error_dpc_count = ErrorDpcCounterInitialize; | |
921 | return; | |
922 | } | |
923 | ||
6aa20a22 | 924 | |
1da177e4 LT |
925 | /* |
926 | * Linux interface functions | |
927 | */ | |
928 | static int | |
929 | sb1000_open(struct net_device *dev) | |
930 | { | |
931 | char *name; | |
932 | int ioaddr[2], status; | |
933 | struct sb1000_private *lp = netdev_priv(dev); | |
934 | const unsigned short FirmwareVersion[] = {0x01, 0x01}; | |
935 | ||
936 | ioaddr[0] = dev->base_addr; | |
937 | /* mem_start holds the second I/O address */ | |
938 | ioaddr[1] = dev->mem_start; | |
939 | name = dev->name; | |
940 | ||
941 | /* initialize sb1000 */ | |
942 | if ((status = sb1000_reset(ioaddr, name))) | |
943 | return status; | |
a26c074c | 944 | ssleep(1); |
1da177e4 LT |
945 | if ((status = sb1000_check_CRC(ioaddr, name))) |
946 | return status; | |
947 | ||
948 | /* initialize private data before board can catch interrupts */ | |
949 | lp->rx_skb[0] = NULL; | |
950 | lp->rx_skb[1] = NULL; | |
951 | lp->rx_skb[2] = NULL; | |
952 | lp->rx_skb[3] = NULL; | |
953 | lp->rx_dlen[0] = 0; | |
954 | lp->rx_dlen[1] = 0; | |
955 | lp->rx_dlen[2] = 0; | |
956 | lp->rx_dlen[3] = 0; | |
957 | lp->rx_frames = 0; | |
958 | lp->rx_error_count = 0; | |
959 | lp->rx_error_dpc_count = 0; | |
960 | lp->rx_session_id[0] = 0x50; | |
961 | lp->rx_session_id[0] = 0x48; | |
962 | lp->rx_session_id[0] = 0x44; | |
963 | lp->rx_session_id[0] = 0x42; | |
964 | lp->rx_frame_id[0] = 0; | |
965 | lp->rx_frame_id[1] = 0; | |
966 | lp->rx_frame_id[2] = 0; | |
967 | lp->rx_frame_id[3] = 0; | |
968 | if (request_irq(dev->irq, &sb1000_interrupt, 0, "sb1000", dev)) { | |
969 | return -EAGAIN; | |
970 | } | |
971 | ||
972 | if (sb1000_debug > 2) | |
973 | printk(KERN_DEBUG "%s: Opening, IRQ %d\n", name, dev->irq); | |
974 | ||
975 | /* Activate board and check firmware version */ | |
976 | udelay(1000); | |
977 | if ((status = sb1000_activate(ioaddr, name))) | |
978 | return status; | |
979 | udelay(0); | |
980 | if ((status = sb1000_get_firmware_version(ioaddr, name, version, 0))) | |
981 | return status; | |
982 | if (version[0] != FirmwareVersion[0] || version[1] != FirmwareVersion[1]) | |
983 | printk(KERN_WARNING "%s: found firmware version %x.%02x " | |
984 | "(should be %x.%02x)\n", name, version[0], version[1], | |
985 | FirmwareVersion[0], FirmwareVersion[1]); | |
986 | ||
987 | ||
988 | netif_start_queue(dev); | |
989 | return 0; /* Always succeed */ | |
990 | } | |
991 | ||
992 | static int sb1000_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) | |
993 | { | |
994 | char* name; | |
995 | unsigned char version[2]; | |
996 | short PID[4]; | |
997 | int ioaddr[2], status, frequency; | |
998 | unsigned int stats[5]; | |
999 | struct sb1000_private *lp = netdev_priv(dev); | |
1000 | ||
1001 | if (!(dev && dev->flags & IFF_UP)) | |
1002 | return -ENODEV; | |
1003 | ||
1004 | ioaddr[0] = dev->base_addr; | |
1005 | /* mem_start holds the second I/O address */ | |
1006 | ioaddr[1] = dev->mem_start; | |
1007 | name = dev->name; | |
1008 | ||
1009 | switch (cmd) { | |
1010 | case SIOCGCMSTATS: /* get statistics */ | |
09f75cd7 | 1011 | stats[0] = dev->stats.rx_bytes; |
1da177e4 | 1012 | stats[1] = lp->rx_frames; |
09f75cd7 JG |
1013 | stats[2] = dev->stats.rx_packets; |
1014 | stats[3] = dev->stats.rx_errors; | |
1015 | stats[4] = dev->stats.rx_dropped; | |
1da177e4 LT |
1016 | if(copy_to_user(ifr->ifr_data, stats, sizeof(stats))) |
1017 | return -EFAULT; | |
1018 | status = 0; | |
1019 | break; | |
1020 | ||
1021 | case SIOCGCMFIRMWARE: /* get firmware version */ | |
1022 | if ((status = sb1000_get_firmware_version(ioaddr, name, version, 1))) | |
1023 | return status; | |
1024 | if(copy_to_user(ifr->ifr_data, version, sizeof(version))) | |
1025 | return -EFAULT; | |
1026 | break; | |
1027 | ||
1028 | case SIOCGCMFREQUENCY: /* get frequency */ | |
1029 | if ((status = sb1000_get_frequency(ioaddr, name, &frequency))) | |
1030 | return status; | |
1031 | if(put_user(frequency, (int __user *) ifr->ifr_data)) | |
1032 | return -EFAULT; | |
1033 | break; | |
1034 | ||
1035 | case SIOCSCMFREQUENCY: /* set frequency */ | |
1036 | if (!capable(CAP_NET_ADMIN)) | |
1037 | return -EPERM; | |
1038 | if(get_user(frequency, (int __user *) ifr->ifr_data)) | |
1039 | return -EFAULT; | |
1040 | if ((status = sb1000_set_frequency(ioaddr, name, frequency))) | |
1041 | return status; | |
1042 | break; | |
1043 | ||
1044 | case SIOCGCMPIDS: /* get PIDs */ | |
1045 | if ((status = sb1000_get_PIDs(ioaddr, name, PID))) | |
1046 | return status; | |
1047 | if(copy_to_user(ifr->ifr_data, PID, sizeof(PID))) | |
1048 | return -EFAULT; | |
1049 | break; | |
1050 | ||
1051 | case SIOCSCMPIDS: /* set PIDs */ | |
1052 | if (!capable(CAP_NET_ADMIN)) | |
1053 | return -EPERM; | |
1054 | if(copy_from_user(PID, ifr->ifr_data, sizeof(PID))) | |
1055 | return -EFAULT; | |
1056 | if ((status = sb1000_set_PIDs(ioaddr, name, PID))) | |
1057 | return status; | |
1058 | /* set session_id, frame_id and pkt_type too */ | |
1059 | lp->rx_session_id[0] = 0x50 | (PID[0] & 0x0f); | |
1060 | lp->rx_session_id[1] = 0x48; | |
1061 | lp->rx_session_id[2] = 0x44; | |
1062 | lp->rx_session_id[3] = 0x42; | |
1063 | lp->rx_frame_id[0] = 0; | |
1064 | lp->rx_frame_id[1] = 0; | |
1065 | lp->rx_frame_id[2] = 0; | |
1066 | lp->rx_frame_id[3] = 0; | |
1067 | break; | |
1068 | ||
1069 | default: | |
1070 | status = -EINVAL; | |
1071 | break; | |
1072 | } | |
1073 | return status; | |
1074 | } | |
1075 | ||
1076 | /* transmit function: do nothing since SB1000 can't send anything out */ | |
1077 | static int | |
1078 | sb1000_start_xmit(struct sk_buff *skb, struct net_device *dev) | |
1079 | { | |
1080 | printk(KERN_WARNING "%s: trying to transmit!!!\n", dev->name); | |
1081 | /* sb1000 can't xmit datagrams */ | |
1082 | dev_kfree_skb(skb); | |
1083 | return 0; | |
1084 | } | |
1085 | ||
1086 | /* SB1000 interrupt handler. */ | |
7d12e780 | 1087 | static irqreturn_t sb1000_interrupt(int irq, void *dev_id) |
1da177e4 | 1088 | { |
7dd73bbc DV |
1089 | static const unsigned char Command0[6] = {0x80, 0x2c, 0x00, 0x00, 0x00, 0x00}; |
1090 | static const unsigned char Command1[6] = {0x80, 0x2e, 0x00, 0x00, 0x00, 0x00}; | |
1091 | ||
1da177e4 LT |
1092 | char *name; |
1093 | unsigned char st; | |
1094 | int ioaddr[2]; | |
c31f28e7 | 1095 | struct net_device *dev = dev_id; |
1da177e4 LT |
1096 | struct sb1000_private *lp = netdev_priv(dev); |
1097 | ||
1da177e4 LT |
1098 | const int MaxRxErrorCount = 6; |
1099 | ||
1da177e4 LT |
1100 | ioaddr[0] = dev->base_addr; |
1101 | /* mem_start holds the second I/O address */ | |
1102 | ioaddr[1] = dev->mem_start; | |
1103 | name = dev->name; | |
1104 | ||
1105 | /* is it a good interrupt? */ | |
1106 | st = inb(ioaddr[1] + 6); | |
1107 | if (!(st & 0x08 && st & 0x20)) { | |
1108 | return IRQ_NONE; | |
1109 | } | |
1110 | ||
1111 | if (sb1000_debug > 3) | |
1112 | printk(KERN_DEBUG "%s: entering interrupt\n", dev->name); | |
1113 | ||
1114 | st = inb(ioaddr[0] + 7); | |
1115 | if (sb1000_rx(dev)) | |
1116 | lp->rx_error_count++; | |
1117 | #ifdef SB1000_DELAY | |
1118 | udelay(SB1000_DELAY); | |
1119 | #endif /* SB1000_DELAY */ | |
1120 | sb1000_issue_read_command(ioaddr, name); | |
1121 | if (st & 0x01) { | |
1122 | sb1000_error_dpc(dev); | |
1123 | sb1000_issue_read_command(ioaddr, name); | |
1124 | } | |
1125 | if (lp->rx_error_dpc_count && !(--lp->rx_error_dpc_count)) { | |
1126 | sb1000_wait_for_ready_clear(ioaddr, name); | |
1127 | sb1000_send_command(ioaddr, name, Command0); | |
1128 | sb1000_wait_for_ready(ioaddr, name); | |
1129 | sb1000_issue_read_command(ioaddr, name); | |
1130 | } | |
1131 | if (lp->rx_error_count >= MaxRxErrorCount) { | |
1132 | sb1000_wait_for_ready_clear(ioaddr, name); | |
1133 | sb1000_send_command(ioaddr, name, Command1); | |
1134 | sb1000_wait_for_ready(ioaddr, name); | |
1135 | sb1000_issue_read_command(ioaddr, name); | |
1136 | lp->rx_error_count = 0; | |
1137 | } | |
1138 | ||
1139 | return IRQ_HANDLED; | |
1140 | } | |
1141 | ||
1da177e4 LT |
1142 | static int sb1000_close(struct net_device *dev) |
1143 | { | |
1144 | int i; | |
1145 | int ioaddr[2]; | |
1146 | struct sb1000_private *lp = netdev_priv(dev); | |
1147 | ||
1148 | if (sb1000_debug > 2) | |
1149 | printk(KERN_DEBUG "%s: Shutting down sb1000.\n", dev->name); | |
1150 | ||
1151 | netif_stop_queue(dev); | |
6aa20a22 | 1152 | |
1da177e4 LT |
1153 | ioaddr[0] = dev->base_addr; |
1154 | /* mem_start holds the second I/O address */ | |
1155 | ioaddr[1] = dev->mem_start; | |
1156 | ||
1157 | free_irq(dev->irq, dev); | |
1158 | /* If we don't do this, we can't re-insmod it later. */ | |
1159 | release_region(ioaddr[1], SB1000_IO_EXTENT); | |
1160 | release_region(ioaddr[0], SB1000_IO_EXTENT); | |
1161 | ||
1162 | /* free rx_skb's if needed */ | |
1163 | for (i=0; i<4; i++) { | |
1164 | if (lp->rx_skb[i]) { | |
1165 | dev_kfree_skb(lp->rx_skb[i]); | |
1166 | } | |
1167 | } | |
1168 | return 0; | |
1169 | } | |
1170 | ||
1171 | MODULE_AUTHOR("Franco Venturi <fventuri@mediaone.net>"); | |
1172 | MODULE_DESCRIPTION("General Instruments SB1000 driver"); | |
1173 | MODULE_LICENSE("GPL"); | |
1174 | ||
1175 | static int __init | |
1176 | sb1000_init(void) | |
1177 | { | |
1178 | return pnp_register_driver(&sb1000_driver); | |
1179 | } | |
1180 | ||
1181 | static void __exit | |
1182 | sb1000_exit(void) | |
1183 | { | |
1184 | pnp_unregister_driver(&sb1000_driver); | |
1185 | } | |
1186 | ||
1187 | module_init(sb1000_init); | |
1188 | module_exit(sb1000_exit); |