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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); | |
61357325 SH |
85 | static netdev_tx_t sb1000_start_xmit(struct sk_buff *skb, |
86 | struct net_device *dev); | |
7d12e780 | 87 | static irqreturn_t sb1000_interrupt(int irq, void *dev_id); |
1da177e4 LT |
88 | static int sb1000_close(struct net_device *dev); |
89 | ||
90 | ||
91 | /* SB1000 hardware routines to be used during open/configuration phases */ | |
a8d06342 | 92 | static int card_wait_for_busy_clear(const int ioaddr[], |
1da177e4 | 93 | const char* name); |
a8d06342 | 94 | static int card_wait_for_ready(const int ioaddr[], const char* name, |
1da177e4 | 95 | unsigned char in[]); |
858119e1 | 96 | static int card_send_command(const int ioaddr[], const char* name, |
1da177e4 LT |
97 | const unsigned char out[], unsigned char in[]); |
98 | ||
99 | /* SB1000 hardware routines to be used during frame rx interrupt */ | |
a8d06342 DV |
100 | static int sb1000_wait_for_ready(const int ioaddr[], const char* name); |
101 | static int sb1000_wait_for_ready_clear(const int ioaddr[], | |
1da177e4 | 102 | const char* name); |
a8d06342 | 103 | static void sb1000_send_command(const int ioaddr[], const char* name, |
1da177e4 | 104 | const unsigned char out[]); |
a8d06342 DV |
105 | static void sb1000_read_status(const int ioaddr[], unsigned char in[]); |
106 | static void sb1000_issue_read_command(const int ioaddr[], | |
1da177e4 LT |
107 | const char* name); |
108 | ||
109 | /* SB1000 commands for open/configuration */ | |
a8d06342 DV |
110 | static int sb1000_reset(const int ioaddr[], const char* name); |
111 | static int sb1000_check_CRC(const int ioaddr[], const char* name); | |
1da177e4 LT |
112 | static inline int sb1000_start_get_set_command(const int ioaddr[], |
113 | const char* name); | |
a8d06342 | 114 | static int sb1000_end_get_set_command(const int ioaddr[], |
1da177e4 | 115 | const char* name); |
a8d06342 | 116 | static int sb1000_activate(const int ioaddr[], const char* name); |
1da177e4 LT |
117 | static int sb1000_get_firmware_version(const int ioaddr[], |
118 | const char* name, unsigned char version[], int do_end); | |
119 | static int sb1000_get_frequency(const int ioaddr[], const char* name, | |
120 | int* frequency); | |
121 | static int sb1000_set_frequency(const int ioaddr[], const char* name, | |
122 | int frequency); | |
123 | static int sb1000_get_PIDs(const int ioaddr[], const char* name, | |
124 | short PID[]); | |
125 | static int sb1000_set_PIDs(const int ioaddr[], const char* name, | |
126 | const short PID[]); | |
127 | ||
128 | /* SB1000 commands for frame rx interrupt */ | |
a8d06342 DV |
129 | static int sb1000_rx(struct net_device *dev); |
130 | static void sb1000_error_dpc(struct net_device *dev); | |
1da177e4 LT |
131 | |
132 | static const struct pnp_device_id sb1000_pnp_ids[] = { | |
133 | { "GIC1000", 0 }, | |
134 | { "", 0 } | |
135 | }; | |
136 | MODULE_DEVICE_TABLE(pnp, sb1000_pnp_ids); | |
137 | ||
d49d19c9 SH |
138 | static const struct net_device_ops sb1000_netdev_ops = { |
139 | .ndo_open = sb1000_open, | |
140 | .ndo_start_xmit = sb1000_start_xmit, | |
141 | .ndo_do_ioctl = sb1000_dev_ioctl, | |
142 | .ndo_stop = sb1000_close, | |
143 | .ndo_change_mtu = eth_change_mtu, | |
144 | .ndo_set_mac_address = eth_mac_addr, | |
145 | .ndo_validate_addr = eth_validate_addr, | |
146 | }; | |
147 | ||
1da177e4 LT |
148 | static int |
149 | sb1000_probe_one(struct pnp_dev *pdev, const struct pnp_device_id *id) | |
150 | { | |
151 | struct net_device *dev; | |
152 | unsigned short ioaddr[2], irq; | |
153 | unsigned int serial_number; | |
154 | int error = -ENODEV; | |
6aa20a22 | 155 | |
1da177e4 LT |
156 | if (pnp_device_attach(pdev) < 0) |
157 | return -ENODEV; | |
158 | if (pnp_activate_dev(pdev) < 0) | |
159 | goto out_detach; | |
160 | ||
161 | if (!pnp_port_valid(pdev, 0) || !pnp_port_valid(pdev, 1)) | |
162 | goto out_disable; | |
163 | if (!pnp_irq_valid(pdev, 0)) | |
164 | goto out_disable; | |
6aa20a22 | 165 | |
1da177e4 | 166 | serial_number = pdev->card->serial; |
6aa20a22 | 167 | |
1da177e4 LT |
168 | ioaddr[0] = pnp_port_start(pdev, 0); |
169 | ioaddr[1] = pnp_port_start(pdev, 0); | |
6aa20a22 | 170 | |
1da177e4 LT |
171 | irq = pnp_irq(pdev, 0); |
172 | ||
173 | if (!request_region(ioaddr[0], 16, "sb1000")) | |
174 | goto out_disable; | |
175 | if (!request_region(ioaddr[1], 16, "sb1000")) | |
176 | goto out_release_region0; | |
177 | ||
178 | dev = alloc_etherdev(sizeof(struct sb1000_private)); | |
179 | if (!dev) { | |
180 | error = -ENOMEM; | |
181 | goto out_release_regions; | |
182 | } | |
183 | ||
6aa20a22 | 184 | |
1da177e4 LT |
185 | dev->base_addr = ioaddr[0]; |
186 | /* mem_start holds the second I/O address */ | |
187 | dev->mem_start = ioaddr[1]; | |
188 | dev->irq = irq; | |
189 | ||
190 | if (sb1000_debug > 0) | |
191 | printk(KERN_NOTICE "%s: sb1000 at (%#3.3lx,%#3.3lx), " | |
192 | "S/N %#8.8x, IRQ %d.\n", dev->name, dev->base_addr, | |
193 | dev->mem_start, serial_number, dev->irq); | |
194 | ||
195 | /* | |
196 | * The SB1000 is an rx-only cable modem device. The uplink is a modem | |
197 | * and we do not want to arp on it. | |
198 | */ | |
199 | dev->flags = IFF_POINTOPOINT|IFF_NOARP; | |
200 | ||
1da177e4 LT |
201 | SET_NETDEV_DEV(dev, &pdev->dev); |
202 | ||
203 | if (sb1000_debug > 0) | |
204 | printk(KERN_NOTICE "%s", version); | |
205 | ||
d49d19c9 | 206 | dev->netdev_ops = &sb1000_netdev_ops; |
1da177e4 LT |
207 | |
208 | /* hardware address is 0:0:serial_number */ | |
209 | dev->dev_addr[2] = serial_number >> 24 & 0xff; | |
210 | dev->dev_addr[3] = serial_number >> 16 & 0xff; | |
211 | dev->dev_addr[4] = serial_number >> 8 & 0xff; | |
212 | dev->dev_addr[5] = serial_number >> 0 & 0xff; | |
213 | ||
214 | pnp_set_drvdata(pdev, dev); | |
215 | ||
216 | error = register_netdev(dev); | |
217 | if (error) | |
218 | goto out_free_netdev; | |
219 | return 0; | |
220 | ||
221 | out_free_netdev: | |
222 | free_netdev(dev); | |
223 | out_release_regions: | |
224 | release_region(ioaddr[1], 16); | |
225 | out_release_region0: | |
226 | release_region(ioaddr[0], 16); | |
227 | out_disable: | |
228 | pnp_disable_dev(pdev); | |
229 | out_detach: | |
230 | pnp_device_detach(pdev); | |
231 | return error; | |
232 | } | |
233 | ||
234 | static void | |
235 | sb1000_remove_one(struct pnp_dev *pdev) | |
236 | { | |
237 | struct net_device *dev = pnp_get_drvdata(pdev); | |
238 | ||
239 | unregister_netdev(dev); | |
240 | release_region(dev->base_addr, 16); | |
241 | release_region(dev->mem_start, 16); | |
242 | free_netdev(dev); | |
243 | } | |
244 | ||
245 | static struct pnp_driver sb1000_driver = { | |
246 | .name = "sb1000", | |
247 | .id_table = sb1000_pnp_ids, | |
248 | .probe = sb1000_probe_one, | |
249 | .remove = sb1000_remove_one, | |
250 | }; | |
251 | ||
6aa20a22 | 252 | |
1da177e4 LT |
253 | /* |
254 | * SB1000 hardware routines to be used during open/configuration phases | |
255 | */ | |
256 | ||
257 | static const int TimeOutJiffies = (875 * HZ) / 100; | |
258 | ||
1da177e4 | 259 | /* Card Wait For Busy Clear (cannot be used during an interrupt) */ |
a8d06342 | 260 | static int |
1da177e4 LT |
261 | card_wait_for_busy_clear(const int ioaddr[], const char* name) |
262 | { | |
263 | unsigned char a; | |
264 | unsigned long timeout; | |
265 | ||
266 | a = inb(ioaddr[0] + 7); | |
267 | timeout = jiffies + TimeOutJiffies; | |
268 | while (a & 0x80 || a & 0x40) { | |
269 | /* a little sleep */ | |
270 | yield(); | |
271 | ||
272 | a = inb(ioaddr[0] + 7); | |
273 | if (time_after_eq(jiffies, timeout)) { | |
274 | printk(KERN_WARNING "%s: card_wait_for_busy_clear timeout\n", | |
275 | name); | |
276 | return -ETIME; | |
277 | } | |
278 | } | |
279 | ||
280 | return 0; | |
281 | } | |
282 | ||
283 | /* Card Wait For Ready (cannot be used during an interrupt) */ | |
a8d06342 | 284 | static int |
1da177e4 LT |
285 | card_wait_for_ready(const int ioaddr[], const char* name, unsigned char in[]) |
286 | { | |
287 | unsigned char a; | |
288 | unsigned long timeout; | |
289 | ||
290 | a = inb(ioaddr[1] + 6); | |
291 | timeout = jiffies + TimeOutJiffies; | |
292 | while (a & 0x80 || !(a & 0x40)) { | |
293 | /* a little sleep */ | |
294 | yield(); | |
295 | ||
296 | a = inb(ioaddr[1] + 6); | |
297 | if (time_after_eq(jiffies, timeout)) { | |
298 | printk(KERN_WARNING "%s: card_wait_for_ready timeout\n", | |
299 | name); | |
300 | return -ETIME; | |
301 | } | |
302 | } | |
303 | ||
304 | in[1] = inb(ioaddr[0] + 1); | |
305 | in[2] = inb(ioaddr[0] + 2); | |
306 | in[3] = inb(ioaddr[0] + 3); | |
307 | in[4] = inb(ioaddr[0] + 4); | |
308 | in[0] = inb(ioaddr[0] + 5); | |
309 | in[6] = inb(ioaddr[0] + 6); | |
310 | in[5] = inb(ioaddr[1] + 6); | |
311 | return 0; | |
312 | } | |
313 | ||
314 | /* Card Send Command (cannot be used during an interrupt) */ | |
858119e1 | 315 | static int |
1da177e4 LT |
316 | card_send_command(const int ioaddr[], const char* name, |
317 | const unsigned char out[], unsigned char in[]) | |
318 | { | |
319 | int status, x; | |
320 | ||
321 | if ((status = card_wait_for_busy_clear(ioaddr, name))) | |
322 | return status; | |
323 | outb(0xa0, ioaddr[0] + 6); | |
324 | outb(out[2], ioaddr[0] + 1); | |
325 | outb(out[3], ioaddr[0] + 2); | |
326 | outb(out[4], ioaddr[0] + 3); | |
327 | outb(out[5], ioaddr[0] + 4); | |
328 | outb(out[1], ioaddr[0] + 5); | |
329 | outb(0xa0, ioaddr[0] + 6); | |
330 | outb(out[0], ioaddr[0] + 7); | |
331 | if (out[0] != 0x20 && out[0] != 0x30) { | |
332 | if ((status = card_wait_for_ready(ioaddr, name, in))) | |
333 | return status; | |
334 | inb(ioaddr[0] + 7); | |
335 | if (sb1000_debug > 3) | |
336 | printk(KERN_DEBUG "%s: card_send_command " | |
337 | "out: %02x%02x%02x%02x%02x%02x " | |
338 | "in: %02x%02x%02x%02x%02x%02x%02x\n", name, | |
339 | out[0], out[1], out[2], out[3], out[4], out[5], | |
340 | in[0], in[1], in[2], in[3], in[4], in[5], in[6]); | |
341 | } else { | |
342 | if (sb1000_debug > 3) | |
343 | printk(KERN_DEBUG "%s: card_send_command " | |
344 | "out: %02x%02x%02x%02x%02x%02x\n", name, | |
345 | out[0], out[1], out[2], out[3], out[4], out[5]); | |
346 | } | |
347 | ||
348 | if (out[1] == 0x1b) { | |
349 | x = (out[2] == 0x02); | |
350 | } else { | |
351 | if (out[0] >= 0x80 && in[0] != (out[1] | 0x80)) | |
352 | return -EIO; | |
353 | } | |
354 | return 0; | |
355 | } | |
356 | ||
6aa20a22 | 357 | |
1da177e4 LT |
358 | /* |
359 | * SB1000 hardware routines to be used during frame rx interrupt | |
360 | */ | |
361 | static const int Sb1000TimeOutJiffies = 7 * HZ; | |
362 | ||
363 | /* Card Wait For Ready (to be used during frame rx) */ | |
a8d06342 | 364 | static int |
1da177e4 LT |
365 | sb1000_wait_for_ready(const int ioaddr[], const char* name) |
366 | { | |
367 | unsigned long timeout; | |
368 | ||
369 | timeout = jiffies + Sb1000TimeOutJiffies; | |
370 | while (inb(ioaddr[1] + 6) & 0x80) { | |
371 | if (time_after_eq(jiffies, timeout)) { | |
372 | printk(KERN_WARNING "%s: sb1000_wait_for_ready timeout\n", | |
373 | name); | |
374 | return -ETIME; | |
375 | } | |
376 | } | |
377 | timeout = jiffies + Sb1000TimeOutJiffies; | |
378 | while (!(inb(ioaddr[1] + 6) & 0x40)) { | |
379 | if (time_after_eq(jiffies, timeout)) { | |
380 | printk(KERN_WARNING "%s: sb1000_wait_for_ready timeout\n", | |
381 | name); | |
382 | return -ETIME; | |
383 | } | |
384 | } | |
385 | inb(ioaddr[0] + 7); | |
386 | return 0; | |
387 | } | |
388 | ||
389 | /* Card Wait For Ready Clear (to be used during frame rx) */ | |
a8d06342 | 390 | static int |
1da177e4 LT |
391 | sb1000_wait_for_ready_clear(const int ioaddr[], const char* name) |
392 | { | |
393 | unsigned long timeout; | |
394 | ||
395 | timeout = jiffies + Sb1000TimeOutJiffies; | |
396 | while (inb(ioaddr[1] + 6) & 0x80) { | |
397 | if (time_after_eq(jiffies, timeout)) { | |
398 | printk(KERN_WARNING "%s: sb1000_wait_for_ready_clear timeout\n", | |
399 | name); | |
400 | return -ETIME; | |
401 | } | |
402 | } | |
403 | timeout = jiffies + Sb1000TimeOutJiffies; | |
404 | while (inb(ioaddr[1] + 6) & 0x40) { | |
405 | if (time_after_eq(jiffies, timeout)) { | |
406 | printk(KERN_WARNING "%s: sb1000_wait_for_ready_clear timeout\n", | |
407 | name); | |
408 | return -ETIME; | |
409 | } | |
410 | } | |
411 | return 0; | |
412 | } | |
413 | ||
414 | /* Card Send Command (to be used during frame rx) */ | |
a8d06342 | 415 | static void |
1da177e4 LT |
416 | sb1000_send_command(const int ioaddr[], const char* name, |
417 | const unsigned char out[]) | |
418 | { | |
419 | outb(out[2], ioaddr[0] + 1); | |
420 | outb(out[3], ioaddr[0] + 2); | |
421 | outb(out[4], ioaddr[0] + 3); | |
422 | outb(out[5], ioaddr[0] + 4); | |
423 | outb(out[1], ioaddr[0] + 5); | |
424 | outb(out[0], ioaddr[0] + 7); | |
425 | if (sb1000_debug > 3) | |
426 | printk(KERN_DEBUG "%s: sb1000_send_command out: %02x%02x%02x%02x" | |
427 | "%02x%02x\n", name, out[0], out[1], out[2], out[3], out[4], out[5]); | |
428 | return; | |
429 | } | |
430 | ||
431 | /* Card Read Status (to be used during frame rx) */ | |
a8d06342 | 432 | static void |
1da177e4 LT |
433 | sb1000_read_status(const int ioaddr[], unsigned char in[]) |
434 | { | |
435 | in[1] = inb(ioaddr[0] + 1); | |
436 | in[2] = inb(ioaddr[0] + 2); | |
437 | in[3] = inb(ioaddr[0] + 3); | |
438 | in[4] = inb(ioaddr[0] + 4); | |
439 | in[0] = inb(ioaddr[0] + 5); | |
440 | return; | |
441 | } | |
442 | ||
443 | /* Issue Read Command (to be used during frame rx) */ | |
a8d06342 | 444 | static void |
1da177e4 LT |
445 | sb1000_issue_read_command(const int ioaddr[], const char* name) |
446 | { | |
7dd73bbc | 447 | static const unsigned char Command0[6] = {0x20, 0x00, 0x00, 0x01, 0x00, 0x00}; |
1da177e4 LT |
448 | |
449 | sb1000_wait_for_ready_clear(ioaddr, name); | |
450 | outb(0xa0, ioaddr[0] + 6); | |
451 | sb1000_send_command(ioaddr, name, Command0); | |
452 | return; | |
453 | } | |
454 | ||
6aa20a22 | 455 | |
1da177e4 LT |
456 | /* |
457 | * SB1000 commands for open/configuration | |
458 | */ | |
459 | /* reset SB1000 card */ | |
a8d06342 | 460 | static int |
1da177e4 LT |
461 | sb1000_reset(const int ioaddr[], const char* name) |
462 | { | |
7dd73bbc DV |
463 | static const unsigned char Command0[6] = {0x80, 0x16, 0x00, 0x00, 0x00, 0x00}; |
464 | ||
1da177e4 LT |
465 | unsigned char st[7]; |
466 | int port, status; | |
1da177e4 LT |
467 | |
468 | port = ioaddr[1] + 6; | |
469 | outb(0x4, port); | |
470 | inb(port); | |
471 | udelay(1000); | |
472 | outb(0x0, port); | |
473 | inb(port); | |
a26c074c | 474 | ssleep(1); |
1da177e4 LT |
475 | outb(0x4, port); |
476 | inb(port); | |
477 | udelay(1000); | |
478 | outb(0x0, port); | |
479 | inb(port); | |
480 | udelay(0); | |
481 | ||
482 | if ((status = card_send_command(ioaddr, name, Command0, st))) | |
483 | return status; | |
484 | if (st[3] != 0xf0) | |
485 | return -EIO; | |
486 | return 0; | |
487 | } | |
488 | ||
489 | /* check SB1000 firmware CRC */ | |
a8d06342 | 490 | static int |
1da177e4 LT |
491 | sb1000_check_CRC(const int ioaddr[], const char* name) |
492 | { | |
7dd73bbc DV |
493 | static const unsigned char Command0[6] = {0x80, 0x1f, 0x00, 0x00, 0x00, 0x00}; |
494 | ||
1da177e4 LT |
495 | unsigned char st[7]; |
496 | int crc, status; | |
1da177e4 LT |
497 | |
498 | /* check CRC */ | |
499 | if ((status = card_send_command(ioaddr, name, Command0, st))) | |
500 | return status; | |
501 | if (st[1] != st[3] || st[2] != st[4]) | |
502 | return -EIO; | |
503 | crc = st[1] << 8 | st[2]; | |
504 | return 0; | |
505 | } | |
506 | ||
507 | static inline int | |
508 | sb1000_start_get_set_command(const int ioaddr[], const char* name) | |
509 | { | |
7dd73bbc DV |
510 | static const unsigned char Command0[6] = {0x80, 0x1b, 0x00, 0x00, 0x00, 0x00}; |
511 | ||
1da177e4 | 512 | unsigned char st[7]; |
1da177e4 LT |
513 | |
514 | return card_send_command(ioaddr, name, Command0, st); | |
515 | } | |
516 | ||
a8d06342 | 517 | static int |
1da177e4 LT |
518 | sb1000_end_get_set_command(const int ioaddr[], const char* name) |
519 | { | |
7dd73bbc DV |
520 | static const unsigned char Command0[6] = {0x80, 0x1b, 0x02, 0x00, 0x00, 0x00}; |
521 | static const unsigned char Command1[6] = {0x20, 0x00, 0x00, 0x00, 0x00, 0x00}; | |
522 | ||
1da177e4 LT |
523 | unsigned char st[7]; |
524 | int status; | |
1da177e4 LT |
525 | |
526 | if ((status = card_send_command(ioaddr, name, Command0, st))) | |
527 | return status; | |
528 | return card_send_command(ioaddr, name, Command1, st); | |
529 | } | |
530 | ||
a8d06342 | 531 | static int |
1da177e4 LT |
532 | sb1000_activate(const int ioaddr[], const char* name) |
533 | { | |
7dd73bbc DV |
534 | static const unsigned char Command0[6] = {0x80, 0x11, 0x00, 0x00, 0x00, 0x00}; |
535 | static const unsigned char Command1[6] = {0x80, 0x16, 0x00, 0x00, 0x00, 0x00}; | |
536 | ||
1da177e4 LT |
537 | unsigned char st[7]; |
538 | int status; | |
1da177e4 | 539 | |
a26c074c | 540 | ssleep(1); |
1da177e4 LT |
541 | if ((status = card_send_command(ioaddr, name, Command0, st))) |
542 | return status; | |
543 | if ((status = card_send_command(ioaddr, name, Command1, st))) | |
544 | return status; | |
545 | if (st[3] != 0xf1) { | |
546 | if ((status = sb1000_start_get_set_command(ioaddr, name))) | |
547 | return status; | |
548 | return -EIO; | |
549 | } | |
550 | udelay(1000); | |
551 | return sb1000_start_get_set_command(ioaddr, name); | |
552 | } | |
553 | ||
554 | /* get SB1000 firmware version */ | |
555 | static int | |
556 | sb1000_get_firmware_version(const int ioaddr[], const char* name, | |
557 | unsigned char version[], int do_end) | |
558 | { | |
7dd73bbc DV |
559 | static const unsigned char Command0[6] = {0x80, 0x23, 0x00, 0x00, 0x00, 0x00}; |
560 | ||
1da177e4 LT |
561 | unsigned char st[7]; |
562 | int status; | |
1da177e4 LT |
563 | |
564 | if ((status = sb1000_start_get_set_command(ioaddr, name))) | |
565 | return status; | |
566 | if ((status = card_send_command(ioaddr, name, Command0, st))) | |
567 | return status; | |
568 | if (st[0] != 0xa3) | |
569 | return -EIO; | |
570 | version[0] = st[1]; | |
571 | version[1] = st[2]; | |
572 | if (do_end) | |
573 | return sb1000_end_get_set_command(ioaddr, name); | |
574 | else | |
575 | return 0; | |
576 | } | |
577 | ||
578 | /* get SB1000 frequency */ | |
579 | static int | |
580 | sb1000_get_frequency(const int ioaddr[], const char* name, int* frequency) | |
581 | { | |
7dd73bbc DV |
582 | static const unsigned char Command0[6] = {0x80, 0x44, 0x00, 0x00, 0x00, 0x00}; |
583 | ||
1da177e4 LT |
584 | unsigned char st[7]; |
585 | int status; | |
1da177e4 LT |
586 | |
587 | udelay(1000); | |
588 | if ((status = sb1000_start_get_set_command(ioaddr, name))) | |
589 | return status; | |
590 | if ((status = card_send_command(ioaddr, name, Command0, st))) | |
591 | return status; | |
592 | *frequency = ((st[1] << 8 | st[2]) << 8 | st[3]) << 8 | st[4]; | |
593 | return sb1000_end_get_set_command(ioaddr, name); | |
594 | } | |
595 | ||
596 | /* set SB1000 frequency */ | |
597 | static int | |
598 | sb1000_set_frequency(const int ioaddr[], const char* name, int frequency) | |
599 | { | |
600 | unsigned char st[7]; | |
601 | int status; | |
602 | unsigned char Command0[6] = {0x80, 0x29, 0x00, 0x00, 0x00, 0x00}; | |
603 | ||
604 | const int FrequencyLowerLimit = 57000; | |
605 | const int FrequencyUpperLimit = 804000; | |
606 | ||
607 | if (frequency < FrequencyLowerLimit || frequency > FrequencyUpperLimit) { | |
608 | printk(KERN_ERR "%s: frequency chosen (%d kHz) is not in the range " | |
609 | "[%d,%d] kHz\n", name, frequency, FrequencyLowerLimit, | |
610 | FrequencyUpperLimit); | |
611 | return -EINVAL; | |
612 | } | |
613 | udelay(1000); | |
614 | if ((status = sb1000_start_get_set_command(ioaddr, name))) | |
615 | return status; | |
616 | Command0[5] = frequency & 0xff; | |
617 | frequency >>= 8; | |
618 | Command0[4] = frequency & 0xff; | |
619 | frequency >>= 8; | |
620 | Command0[3] = frequency & 0xff; | |
621 | frequency >>= 8; | |
622 | Command0[2] = frequency & 0xff; | |
623 | return card_send_command(ioaddr, name, Command0, st); | |
624 | } | |
625 | ||
626 | /* get SB1000 PIDs */ | |
627 | static int | |
628 | sb1000_get_PIDs(const int ioaddr[], const char* name, short PID[]) | |
629 | { | |
7dd73bbc DV |
630 | static const unsigned char Command0[6] = {0x80, 0x40, 0x00, 0x00, 0x00, 0x00}; |
631 | static const unsigned char Command1[6] = {0x80, 0x41, 0x00, 0x00, 0x00, 0x00}; | |
632 | static const unsigned char Command2[6] = {0x80, 0x42, 0x00, 0x00, 0x00, 0x00}; | |
633 | static const unsigned char Command3[6] = {0x80, 0x43, 0x00, 0x00, 0x00, 0x00}; | |
634 | ||
1da177e4 LT |
635 | unsigned char st[7]; |
636 | int status; | |
1da177e4 LT |
637 | |
638 | udelay(1000); | |
639 | if ((status = sb1000_start_get_set_command(ioaddr, name))) | |
640 | return status; | |
641 | ||
642 | if ((status = card_send_command(ioaddr, name, Command0, st))) | |
643 | return status; | |
644 | PID[0] = st[1] << 8 | st[2]; | |
645 | ||
646 | if ((status = card_send_command(ioaddr, name, Command1, st))) | |
647 | return status; | |
648 | PID[1] = st[1] << 8 | st[2]; | |
649 | ||
650 | if ((status = card_send_command(ioaddr, name, Command2, st))) | |
651 | return status; | |
652 | PID[2] = st[1] << 8 | st[2]; | |
653 | ||
654 | if ((status = card_send_command(ioaddr, name, Command3, st))) | |
655 | return status; | |
656 | PID[3] = st[1] << 8 | st[2]; | |
657 | ||
658 | return sb1000_end_get_set_command(ioaddr, name); | |
659 | } | |
660 | ||
661 | /* set SB1000 PIDs */ | |
662 | static int | |
663 | sb1000_set_PIDs(const int ioaddr[], const char* name, const short PID[]) | |
664 | { | |
7dd73bbc DV |
665 | static const unsigned char Command4[6] = {0x80, 0x2e, 0x00, 0x00, 0x00, 0x00}; |
666 | ||
1da177e4 LT |
667 | unsigned char st[7]; |
668 | short p; | |
669 | int status; | |
670 | unsigned char Command0[6] = {0x80, 0x31, 0x00, 0x00, 0x00, 0x00}; | |
671 | unsigned char Command1[6] = {0x80, 0x32, 0x00, 0x00, 0x00, 0x00}; | |
672 | unsigned char Command2[6] = {0x80, 0x33, 0x00, 0x00, 0x00, 0x00}; | |
673 | unsigned char Command3[6] = {0x80, 0x34, 0x00, 0x00, 0x00, 0x00}; | |
1da177e4 LT |
674 | |
675 | udelay(1000); | |
676 | if ((status = sb1000_start_get_set_command(ioaddr, name))) | |
677 | return status; | |
678 | ||
679 | p = PID[0]; | |
680 | Command0[3] = p & 0xff; | |
681 | p >>= 8; | |
682 | Command0[2] = p & 0xff; | |
683 | if ((status = card_send_command(ioaddr, name, Command0, st))) | |
684 | return status; | |
685 | ||
686 | p = PID[1]; | |
687 | Command1[3] = p & 0xff; | |
688 | p >>= 8; | |
689 | Command1[2] = p & 0xff; | |
690 | if ((status = card_send_command(ioaddr, name, Command1, st))) | |
691 | return status; | |
692 | ||
693 | p = PID[2]; | |
694 | Command2[3] = p & 0xff; | |
695 | p >>= 8; | |
696 | Command2[2] = p & 0xff; | |
697 | if ((status = card_send_command(ioaddr, name, Command2, st))) | |
698 | return status; | |
699 | ||
700 | p = PID[3]; | |
701 | Command3[3] = p & 0xff; | |
702 | p >>= 8; | |
703 | Command3[2] = p & 0xff; | |
704 | if ((status = card_send_command(ioaddr, name, Command3, st))) | |
705 | return status; | |
706 | ||
707 | if ((status = card_send_command(ioaddr, name, Command4, st))) | |
708 | return status; | |
709 | return sb1000_end_get_set_command(ioaddr, name); | |
710 | } | |
711 | ||
6aa20a22 | 712 | |
a8d06342 | 713 | static void |
1da177e4 LT |
714 | sb1000_print_status_buffer(const char* name, unsigned char st[], |
715 | unsigned char buffer[], int size) | |
716 | { | |
717 | int i, j, k; | |
718 | ||
719 | printk(KERN_DEBUG "%s: status: %02x %02x\n", name, st[0], st[1]); | |
720 | if (buffer[24] == 0x08 && buffer[25] == 0x00 && buffer[26] == 0x45) { | |
721 | printk(KERN_DEBUG "%s: length: %d protocol: %d from: %d.%d.%d.%d:%d " | |
722 | "to %d.%d.%d.%d:%d\n", name, buffer[28] << 8 | buffer[29], | |
723 | buffer[35], buffer[38], buffer[39], buffer[40], buffer[41], | |
724 | buffer[46] << 8 | buffer[47], | |
725 | buffer[42], buffer[43], buffer[44], buffer[45], | |
726 | buffer[48] << 8 | buffer[49]); | |
727 | } else { | |
728 | for (i = 0, k = 0; i < (size + 7) / 8; i++) { | |
729 | printk(KERN_DEBUG "%s: %s", name, i ? " " : "buffer:"); | |
730 | for (j = 0; j < 8 && k < size; j++, k++) | |
731 | printk(" %02x", buffer[k]); | |
732 | printk("\n"); | |
733 | } | |
734 | } | |
735 | return; | |
736 | } | |
737 | ||
738 | /* | |
739 | * SB1000 commands for frame rx interrupt | |
740 | */ | |
741 | /* receive a single frame and assemble datagram | |
742 | * (this is the heart of the interrupt routine) | |
743 | */ | |
a8d06342 | 744 | static int |
1da177e4 LT |
745 | sb1000_rx(struct net_device *dev) |
746 | { | |
747 | ||
748 | #define FRAMESIZE 184 | |
749 | unsigned char st[2], buffer[FRAMESIZE], session_id, frame_id; | |
750 | short dlen; | |
751 | int ioaddr, ns; | |
752 | unsigned int skbsize; | |
753 | struct sk_buff *skb; | |
754 | struct sb1000_private *lp = netdev_priv(dev); | |
09f75cd7 | 755 | struct net_device_stats *stats = &dev->stats; |
1da177e4 LT |
756 | |
757 | /* SB1000 frame constants */ | |
758 | const int FrameSize = FRAMESIZE; | |
759 | const int NewDatagramHeaderSkip = 8; | |
760 | const int NewDatagramHeaderSize = NewDatagramHeaderSkip + 18; | |
761 | const int NewDatagramDataSize = FrameSize - NewDatagramHeaderSize; | |
762 | const int ContDatagramHeaderSkip = 7; | |
763 | const int ContDatagramHeaderSize = ContDatagramHeaderSkip + 1; | |
764 | const int ContDatagramDataSize = FrameSize - ContDatagramHeaderSize; | |
765 | const int TrailerSize = 4; | |
766 | ||
767 | ioaddr = dev->base_addr; | |
768 | ||
769 | insw(ioaddr, (unsigned short*) st, 1); | |
770 | #ifdef XXXDEBUG | |
771 | printk("cm0: received: %02x %02x\n", st[0], st[1]); | |
772 | #endif /* XXXDEBUG */ | |
773 | lp->rx_frames++; | |
774 | ||
775 | /* decide if it is a good or bad frame */ | |
776 | for (ns = 0; ns < NPIDS; ns++) { | |
777 | session_id = lp->rx_session_id[ns]; | |
778 | frame_id = lp->rx_frame_id[ns]; | |
779 | if (st[0] == session_id) { | |
780 | if (st[1] == frame_id || (!frame_id && (st[1] & 0xf0) == 0x30)) { | |
781 | goto good_frame; | |
782 | } else if ((st[1] & 0xf0) == 0x30 && (st[0] & 0x40)) { | |
783 | goto skipped_frame; | |
784 | } else { | |
785 | goto bad_frame; | |
786 | } | |
787 | } else if (st[0] == (session_id | 0x40)) { | |
788 | if ((st[1] & 0xf0) == 0x30) { | |
789 | goto skipped_frame; | |
790 | } else { | |
791 | goto bad_frame; | |
792 | } | |
793 | } | |
794 | } | |
795 | goto bad_frame; | |
796 | ||
797 | skipped_frame: | |
798 | stats->rx_frame_errors++; | |
799 | skb = lp->rx_skb[ns]; | |
800 | if (sb1000_debug > 1) | |
801 | printk(KERN_WARNING "%s: missing frame(s): got %02x %02x " | |
802 | "expecting %02x %02x\n", dev->name, st[0], st[1], | |
803 | skb ? session_id : session_id | 0x40, frame_id); | |
804 | if (skb) { | |
805 | dev_kfree_skb(skb); | |
806 | skb = NULL; | |
807 | } | |
808 | ||
809 | good_frame: | |
810 | lp->rx_frame_id[ns] = 0x30 | ((st[1] + 1) & 0x0f); | |
811 | /* new datagram */ | |
812 | if (st[0] & 0x40) { | |
813 | /* get data length */ | |
814 | insw(ioaddr, buffer, NewDatagramHeaderSize / 2); | |
815 | #ifdef XXXDEBUG | |
816 | printk("cm0: IP identification: %02x%02x fragment offset: %02x%02x\n", buffer[30], buffer[31], buffer[32], buffer[33]); | |
817 | #endif /* XXXDEBUG */ | |
818 | if (buffer[0] != NewDatagramHeaderSkip) { | |
819 | if (sb1000_debug > 1) | |
820 | printk(KERN_WARNING "%s: new datagram header skip error: " | |
821 | "got %02x expecting %02x\n", dev->name, buffer[0], | |
822 | NewDatagramHeaderSkip); | |
823 | stats->rx_length_errors++; | |
824 | insw(ioaddr, buffer, NewDatagramDataSize / 2); | |
825 | goto bad_frame_next; | |
826 | } | |
827 | dlen = ((buffer[NewDatagramHeaderSkip + 3] & 0x0f) << 8 | | |
828 | buffer[NewDatagramHeaderSkip + 4]) - 17; | |
829 | if (dlen > SB1000_MRU) { | |
830 | if (sb1000_debug > 1) | |
831 | printk(KERN_WARNING "%s: datagram length (%d) greater " | |
832 | "than MRU (%d)\n", dev->name, dlen, SB1000_MRU); | |
833 | stats->rx_length_errors++; | |
834 | insw(ioaddr, buffer, NewDatagramDataSize / 2); | |
835 | goto bad_frame_next; | |
836 | } | |
837 | lp->rx_dlen[ns] = dlen; | |
838 | /* compute size to allocate for datagram */ | |
839 | skbsize = dlen + FrameSize; | |
840 | if ((skb = alloc_skb(skbsize, GFP_ATOMIC)) == NULL) { | |
841 | if (sb1000_debug > 1) | |
842 | printk(KERN_WARNING "%s: can't allocate %d bytes long " | |
843 | "skbuff\n", dev->name, skbsize); | |
844 | stats->rx_dropped++; | |
845 | insw(ioaddr, buffer, NewDatagramDataSize / 2); | |
846 | goto dropped_frame; | |
847 | } | |
848 | skb->dev = dev; | |
459a98ed | 849 | skb_reset_mac_header(skb); |
1da177e4 LT |
850 | skb->protocol = (unsigned short) buffer[NewDatagramHeaderSkip + 16]; |
851 | insw(ioaddr, skb_put(skb, NewDatagramDataSize), | |
852 | NewDatagramDataSize / 2); | |
853 | lp->rx_skb[ns] = skb; | |
854 | } else { | |
855 | /* continuation of previous datagram */ | |
856 | insw(ioaddr, buffer, ContDatagramHeaderSize / 2); | |
857 | if (buffer[0] != ContDatagramHeaderSkip) { | |
858 | if (sb1000_debug > 1) | |
859 | printk(KERN_WARNING "%s: cont datagram header skip error: " | |
860 | "got %02x expecting %02x\n", dev->name, buffer[0], | |
861 | ContDatagramHeaderSkip); | |
862 | stats->rx_length_errors++; | |
863 | insw(ioaddr, buffer, ContDatagramDataSize / 2); | |
864 | goto bad_frame_next; | |
865 | } | |
866 | skb = lp->rx_skb[ns]; | |
867 | insw(ioaddr, skb_put(skb, ContDatagramDataSize), | |
868 | ContDatagramDataSize / 2); | |
869 | dlen = lp->rx_dlen[ns]; | |
870 | } | |
871 | if (skb->len < dlen + TrailerSize) { | |
872 | lp->rx_session_id[ns] &= ~0x40; | |
873 | return 0; | |
874 | } | |
875 | ||
876 | /* datagram completed: send to upper level */ | |
877 | skb_trim(skb, dlen); | |
878 | netif_rx(skb); | |
1da177e4 LT |
879 | stats->rx_bytes+=dlen; |
880 | stats->rx_packets++; | |
881 | lp->rx_skb[ns] = NULL; | |
882 | lp->rx_session_id[ns] |= 0x40; | |
883 | return 0; | |
884 | ||
885 | bad_frame: | |
886 | insw(ioaddr, buffer, FrameSize / 2); | |
887 | if (sb1000_debug > 1) | |
888 | printk(KERN_WARNING "%s: frame error: got %02x %02x\n", | |
889 | dev->name, st[0], st[1]); | |
890 | stats->rx_frame_errors++; | |
891 | bad_frame_next: | |
892 | if (sb1000_debug > 2) | |
893 | sb1000_print_status_buffer(dev->name, st, buffer, FrameSize); | |
894 | dropped_frame: | |
895 | stats->rx_errors++; | |
896 | if (ns < NPIDS) { | |
897 | if ((skb = lp->rx_skb[ns])) { | |
898 | dev_kfree_skb(skb); | |
899 | lp->rx_skb[ns] = NULL; | |
900 | } | |
901 | lp->rx_session_id[ns] |= 0x40; | |
902 | } | |
903 | return -1; | |
904 | } | |
905 | ||
a8d06342 | 906 | static void |
1da177e4 LT |
907 | sb1000_error_dpc(struct net_device *dev) |
908 | { | |
7dd73bbc DV |
909 | static const unsigned char Command0[6] = {0x80, 0x26, 0x00, 0x00, 0x00, 0x00}; |
910 | ||
1da177e4 LT |
911 | char *name; |
912 | unsigned char st[5]; | |
913 | int ioaddr[2]; | |
914 | struct sb1000_private *lp = netdev_priv(dev); | |
1da177e4 LT |
915 | const int ErrorDpcCounterInitialize = 200; |
916 | ||
917 | ioaddr[0] = dev->base_addr; | |
918 | /* mem_start holds the second I/O address */ | |
919 | ioaddr[1] = dev->mem_start; | |
920 | name = dev->name; | |
921 | ||
922 | sb1000_wait_for_ready_clear(ioaddr, name); | |
923 | sb1000_send_command(ioaddr, name, Command0); | |
924 | sb1000_wait_for_ready(ioaddr, name); | |
925 | sb1000_read_status(ioaddr, st); | |
926 | if (st[1] & 0x10) | |
927 | lp->rx_error_dpc_count = ErrorDpcCounterInitialize; | |
928 | return; | |
929 | } | |
930 | ||
6aa20a22 | 931 | |
1da177e4 LT |
932 | /* |
933 | * Linux interface functions | |
934 | */ | |
935 | static int | |
936 | sb1000_open(struct net_device *dev) | |
937 | { | |
938 | char *name; | |
939 | int ioaddr[2], status; | |
940 | struct sb1000_private *lp = netdev_priv(dev); | |
941 | const unsigned short FirmwareVersion[] = {0x01, 0x01}; | |
942 | ||
943 | ioaddr[0] = dev->base_addr; | |
944 | /* mem_start holds the second I/O address */ | |
945 | ioaddr[1] = dev->mem_start; | |
946 | name = dev->name; | |
947 | ||
948 | /* initialize sb1000 */ | |
949 | if ((status = sb1000_reset(ioaddr, name))) | |
950 | return status; | |
a26c074c | 951 | ssleep(1); |
1da177e4 LT |
952 | if ((status = sb1000_check_CRC(ioaddr, name))) |
953 | return status; | |
954 | ||
955 | /* initialize private data before board can catch interrupts */ | |
956 | lp->rx_skb[0] = NULL; | |
957 | lp->rx_skb[1] = NULL; | |
958 | lp->rx_skb[2] = NULL; | |
959 | lp->rx_skb[3] = NULL; | |
960 | lp->rx_dlen[0] = 0; | |
961 | lp->rx_dlen[1] = 0; | |
962 | lp->rx_dlen[2] = 0; | |
963 | lp->rx_dlen[3] = 0; | |
964 | lp->rx_frames = 0; | |
965 | lp->rx_error_count = 0; | |
966 | lp->rx_error_dpc_count = 0; | |
967 | lp->rx_session_id[0] = 0x50; | |
968 | lp->rx_session_id[0] = 0x48; | |
969 | lp->rx_session_id[0] = 0x44; | |
970 | lp->rx_session_id[0] = 0x42; | |
971 | lp->rx_frame_id[0] = 0; | |
972 | lp->rx_frame_id[1] = 0; | |
973 | lp->rx_frame_id[2] = 0; | |
974 | lp->rx_frame_id[3] = 0; | |
975 | if (request_irq(dev->irq, &sb1000_interrupt, 0, "sb1000", dev)) { | |
976 | return -EAGAIN; | |
977 | } | |
978 | ||
979 | if (sb1000_debug > 2) | |
980 | printk(KERN_DEBUG "%s: Opening, IRQ %d\n", name, dev->irq); | |
981 | ||
982 | /* Activate board and check firmware version */ | |
983 | udelay(1000); | |
984 | if ((status = sb1000_activate(ioaddr, name))) | |
985 | return status; | |
986 | udelay(0); | |
987 | if ((status = sb1000_get_firmware_version(ioaddr, name, version, 0))) | |
988 | return status; | |
989 | if (version[0] != FirmwareVersion[0] || version[1] != FirmwareVersion[1]) | |
990 | printk(KERN_WARNING "%s: found firmware version %x.%02x " | |
991 | "(should be %x.%02x)\n", name, version[0], version[1], | |
992 | FirmwareVersion[0], FirmwareVersion[1]); | |
993 | ||
994 | ||
995 | netif_start_queue(dev); | |
996 | return 0; /* Always succeed */ | |
997 | } | |
998 | ||
999 | static int sb1000_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) | |
1000 | { | |
1001 | char* name; | |
1002 | unsigned char version[2]; | |
1003 | short PID[4]; | |
1004 | int ioaddr[2], status, frequency; | |
1005 | unsigned int stats[5]; | |
1006 | struct sb1000_private *lp = netdev_priv(dev); | |
1007 | ||
1008 | if (!(dev && dev->flags & IFF_UP)) | |
1009 | return -ENODEV; | |
1010 | ||
1011 | ioaddr[0] = dev->base_addr; | |
1012 | /* mem_start holds the second I/O address */ | |
1013 | ioaddr[1] = dev->mem_start; | |
1014 | name = dev->name; | |
1015 | ||
1016 | switch (cmd) { | |
1017 | case SIOCGCMSTATS: /* get statistics */ | |
09f75cd7 | 1018 | stats[0] = dev->stats.rx_bytes; |
1da177e4 | 1019 | stats[1] = lp->rx_frames; |
09f75cd7 JG |
1020 | stats[2] = dev->stats.rx_packets; |
1021 | stats[3] = dev->stats.rx_errors; | |
1022 | stats[4] = dev->stats.rx_dropped; | |
1da177e4 LT |
1023 | if(copy_to_user(ifr->ifr_data, stats, sizeof(stats))) |
1024 | return -EFAULT; | |
1025 | status = 0; | |
1026 | break; | |
1027 | ||
1028 | case SIOCGCMFIRMWARE: /* get firmware version */ | |
1029 | if ((status = sb1000_get_firmware_version(ioaddr, name, version, 1))) | |
1030 | return status; | |
1031 | if(copy_to_user(ifr->ifr_data, version, sizeof(version))) | |
1032 | return -EFAULT; | |
1033 | break; | |
1034 | ||
1035 | case SIOCGCMFREQUENCY: /* get frequency */ | |
1036 | if ((status = sb1000_get_frequency(ioaddr, name, &frequency))) | |
1037 | return status; | |
1038 | if(put_user(frequency, (int __user *) ifr->ifr_data)) | |
1039 | return -EFAULT; | |
1040 | break; | |
1041 | ||
1042 | case SIOCSCMFREQUENCY: /* set frequency */ | |
1043 | if (!capable(CAP_NET_ADMIN)) | |
1044 | return -EPERM; | |
1045 | if(get_user(frequency, (int __user *) ifr->ifr_data)) | |
1046 | return -EFAULT; | |
1047 | if ((status = sb1000_set_frequency(ioaddr, name, frequency))) | |
1048 | return status; | |
1049 | break; | |
1050 | ||
1051 | case SIOCGCMPIDS: /* get PIDs */ | |
1052 | if ((status = sb1000_get_PIDs(ioaddr, name, PID))) | |
1053 | return status; | |
1054 | if(copy_to_user(ifr->ifr_data, PID, sizeof(PID))) | |
1055 | return -EFAULT; | |
1056 | break; | |
1057 | ||
1058 | case SIOCSCMPIDS: /* set PIDs */ | |
1059 | if (!capable(CAP_NET_ADMIN)) | |
1060 | return -EPERM; | |
1061 | if(copy_from_user(PID, ifr->ifr_data, sizeof(PID))) | |
1062 | return -EFAULT; | |
1063 | if ((status = sb1000_set_PIDs(ioaddr, name, PID))) | |
1064 | return status; | |
1065 | /* set session_id, frame_id and pkt_type too */ | |
1066 | lp->rx_session_id[0] = 0x50 | (PID[0] & 0x0f); | |
1067 | lp->rx_session_id[1] = 0x48; | |
1068 | lp->rx_session_id[2] = 0x44; | |
1069 | lp->rx_session_id[3] = 0x42; | |
1070 | lp->rx_frame_id[0] = 0; | |
1071 | lp->rx_frame_id[1] = 0; | |
1072 | lp->rx_frame_id[2] = 0; | |
1073 | lp->rx_frame_id[3] = 0; | |
1074 | break; | |
1075 | ||
1076 | default: | |
1077 | status = -EINVAL; | |
1078 | break; | |
1079 | } | |
1080 | return status; | |
1081 | } | |
1082 | ||
1083 | /* transmit function: do nothing since SB1000 can't send anything out */ | |
61357325 | 1084 | static netdev_tx_t |
1da177e4 LT |
1085 | sb1000_start_xmit(struct sk_buff *skb, struct net_device *dev) |
1086 | { | |
1087 | printk(KERN_WARNING "%s: trying to transmit!!!\n", dev->name); | |
1088 | /* sb1000 can't xmit datagrams */ | |
1089 | dev_kfree_skb(skb); | |
6ed10654 | 1090 | return NETDEV_TX_OK; |
1da177e4 LT |
1091 | } |
1092 | ||
1093 | /* SB1000 interrupt handler. */ | |
7d12e780 | 1094 | static irqreturn_t sb1000_interrupt(int irq, void *dev_id) |
1da177e4 | 1095 | { |
7dd73bbc DV |
1096 | static const unsigned char Command0[6] = {0x80, 0x2c, 0x00, 0x00, 0x00, 0x00}; |
1097 | static const unsigned char Command1[6] = {0x80, 0x2e, 0x00, 0x00, 0x00, 0x00}; | |
1098 | ||
1da177e4 LT |
1099 | char *name; |
1100 | unsigned char st; | |
1101 | int ioaddr[2]; | |
c31f28e7 | 1102 | struct net_device *dev = dev_id; |
1da177e4 LT |
1103 | struct sb1000_private *lp = netdev_priv(dev); |
1104 | ||
1da177e4 LT |
1105 | const int MaxRxErrorCount = 6; |
1106 | ||
1da177e4 LT |
1107 | ioaddr[0] = dev->base_addr; |
1108 | /* mem_start holds the second I/O address */ | |
1109 | ioaddr[1] = dev->mem_start; | |
1110 | name = dev->name; | |
1111 | ||
1112 | /* is it a good interrupt? */ | |
1113 | st = inb(ioaddr[1] + 6); | |
1114 | if (!(st & 0x08 && st & 0x20)) { | |
1115 | return IRQ_NONE; | |
1116 | } | |
1117 | ||
1118 | if (sb1000_debug > 3) | |
1119 | printk(KERN_DEBUG "%s: entering interrupt\n", dev->name); | |
1120 | ||
1121 | st = inb(ioaddr[0] + 7); | |
1122 | if (sb1000_rx(dev)) | |
1123 | lp->rx_error_count++; | |
1124 | #ifdef SB1000_DELAY | |
1125 | udelay(SB1000_DELAY); | |
1126 | #endif /* SB1000_DELAY */ | |
1127 | sb1000_issue_read_command(ioaddr, name); | |
1128 | if (st & 0x01) { | |
1129 | sb1000_error_dpc(dev); | |
1130 | sb1000_issue_read_command(ioaddr, name); | |
1131 | } | |
1132 | if (lp->rx_error_dpc_count && !(--lp->rx_error_dpc_count)) { | |
1133 | sb1000_wait_for_ready_clear(ioaddr, name); | |
1134 | sb1000_send_command(ioaddr, name, Command0); | |
1135 | sb1000_wait_for_ready(ioaddr, name); | |
1136 | sb1000_issue_read_command(ioaddr, name); | |
1137 | } | |
1138 | if (lp->rx_error_count >= MaxRxErrorCount) { | |
1139 | sb1000_wait_for_ready_clear(ioaddr, name); | |
1140 | sb1000_send_command(ioaddr, name, Command1); | |
1141 | sb1000_wait_for_ready(ioaddr, name); | |
1142 | sb1000_issue_read_command(ioaddr, name); | |
1143 | lp->rx_error_count = 0; | |
1144 | } | |
1145 | ||
1146 | return IRQ_HANDLED; | |
1147 | } | |
1148 | ||
1da177e4 LT |
1149 | static int sb1000_close(struct net_device *dev) |
1150 | { | |
1151 | int i; | |
1152 | int ioaddr[2]; | |
1153 | struct sb1000_private *lp = netdev_priv(dev); | |
1154 | ||
1155 | if (sb1000_debug > 2) | |
1156 | printk(KERN_DEBUG "%s: Shutting down sb1000.\n", dev->name); | |
1157 | ||
1158 | netif_stop_queue(dev); | |
6aa20a22 | 1159 | |
1da177e4 LT |
1160 | ioaddr[0] = dev->base_addr; |
1161 | /* mem_start holds the second I/O address */ | |
1162 | ioaddr[1] = dev->mem_start; | |
1163 | ||
1164 | free_irq(dev->irq, dev); | |
1165 | /* If we don't do this, we can't re-insmod it later. */ | |
1166 | release_region(ioaddr[1], SB1000_IO_EXTENT); | |
1167 | release_region(ioaddr[0], SB1000_IO_EXTENT); | |
1168 | ||
1169 | /* free rx_skb's if needed */ | |
1170 | for (i=0; i<4; i++) { | |
1171 | if (lp->rx_skb[i]) { | |
1172 | dev_kfree_skb(lp->rx_skb[i]); | |
1173 | } | |
1174 | } | |
1175 | return 0; | |
1176 | } | |
1177 | ||
1178 | MODULE_AUTHOR("Franco Venturi <fventuri@mediaone.net>"); | |
1179 | MODULE_DESCRIPTION("General Instruments SB1000 driver"); | |
1180 | MODULE_LICENSE("GPL"); | |
1181 | ||
1182 | static int __init | |
1183 | sb1000_init(void) | |
1184 | { | |
1185 | return pnp_register_driver(&sb1000_driver); | |
1186 | } | |
1187 | ||
1188 | static void __exit | |
1189 | sb1000_exit(void) | |
1190 | { | |
1191 | pnp_unregister_driver(&sb1000_driver); | |
1192 | } | |
1193 | ||
1194 | module_init(sb1000_init); | |
1195 | module_exit(sb1000_exit); |