1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* sb1000.c: A General Instruments SB1000 driver for linux. */ |
3 | /* |
4 | Written 1998 by Franco Venturi. |
5 | |
6 | Copyright 1998 by Franco Venturi. |
7 | Copyright 1994,1995 by Donald Becker. |
8 | Copyright 1993 United States Government as represented by the |
9 | Director, National Security Agency. |
10 | |
11 | This driver is for the General Instruments SB1000 (internal SURFboard) |
12 | |
13 | The author may be reached as fventuri@mediaone.net |
14 | |
15 | |
16 | Changes: |
17 | |
18 | 981115 Steven Hirsch <shirsch@adelphia.net> |
19 | |
20 | Linus changed the timer interface. Should work on all recent |
21 | development kernels. |
22 | |
23 | 980608 Steven Hirsch <shirsch@adelphia.net> |
24 | |
25 | Small changes to make it work with 2.1.x kernels. Hopefully, |
26 | nothing major will change before official release of Linux 2.2. |
27 | |
28 | Merged with 2.2 - Alan Cox |
29 | */ |
30 | |
31 | static char version[] = "sb1000.c:v1.1.2 6/01/98 (fventuri@mediaone.net)\n" ; |
32 | |
33 | #include <linux/module.h> |
34 | #include <linux/kernel.h> |
35 | #include <linux/sched.h> |
36 | #include <linux/string.h> |
37 | #include <linux/interrupt.h> |
38 | #include <linux/errno.h> |
39 | #include <linux/if_cablemodem.h> /* for SIOGCM/SIOSCM stuff */ |
40 | #include <linux/in.h> |
41 | #include <linux/ioport.h> |
42 | #include <linux/netdevice.h> |
43 | #include <linux/if_arp.h> |
44 | #include <linux/skbuff.h> |
45 | #include <linux/delay.h> /* for udelay() */ |
46 | #include <linux/etherdevice.h> |
47 | #include <linux/pnp.h> |
48 | #include <linux/init.h> |
49 | #include <linux/bitops.h> |
50 | #include <linux/gfp.h> |
51 | |
52 | #include <asm/io.h> |
53 | #include <asm/processor.h> |
54 | #include <linux/uaccess.h> |
55 | |
56 | #ifdef SB1000_DEBUG |
57 | static int sb1000_debug = SB1000_DEBUG; |
58 | #else |
59 | static const int sb1000_debug = 1; |
60 | #endif |
61 | |
62 | static const int SB1000_IO_EXTENT = 8; |
63 | /* SB1000 Maximum Receive Unit */ |
64 | static const int SB1000_MRU = 1500; /* octects */ |
65 | |
66 | #define NPIDS 4 |
67 | struct sb1000_private { |
68 | struct sk_buff *rx_skb[NPIDS]; |
69 | short rx_dlen[NPIDS]; |
70 | unsigned int rx_frames; |
71 | short rx_error_count; |
72 | short rx_error_dpc_count; |
73 | unsigned char rx_session_id[NPIDS]; |
74 | unsigned char rx_frame_id[NPIDS]; |
75 | unsigned char rx_pkt_type[NPIDS]; |
76 | }; |
77 | |
78 | /* prototypes for Linux interface */ |
79 | extern int sb1000_probe(struct net_device *dev); |
80 | static int sb1000_open(struct net_device *dev); |
81 | static int sb1000_siocdevprivate(struct net_device *dev, struct ifreq *ifr, |
82 | void __user *data, int cmd); |
83 | static netdev_tx_t sb1000_start_xmit(struct sk_buff *skb, |
84 | struct net_device *dev); |
85 | static irqreturn_t sb1000_interrupt(int irq, void *dev_id); |
86 | static int sb1000_close(struct net_device *dev); |
87 | |
88 | |
89 | /* SB1000 hardware routines to be used during open/configuration phases */ |
90 | static int card_wait_for_busy_clear(const int ioaddr[], |
91 | const char* name); |
92 | static int card_wait_for_ready(const int ioaddr[], const char* name, |
93 | unsigned char in[]); |
94 | static int card_send_command(const int ioaddr[], const char* name, |
95 | const unsigned char out[], unsigned char in[]); |
96 | |
97 | /* SB1000 hardware routines to be used during frame rx interrupt */ |
98 | static int sb1000_wait_for_ready(const int ioaddr[], const char* name); |
99 | static int sb1000_wait_for_ready_clear(const int ioaddr[], |
100 | const char* name); |
101 | static void sb1000_send_command(const int ioaddr[], const char* name, |
102 | const unsigned char out[]); |
103 | static void sb1000_read_status(const int ioaddr[], unsigned char in[]); |
104 | static void sb1000_issue_read_command(const int ioaddr[], |
105 | const char* name); |
106 | |
107 | /* SB1000 commands for open/configuration */ |
108 | static int sb1000_reset(const int ioaddr[], const char* name); |
109 | static int sb1000_check_CRC(const int ioaddr[], const char* name); |
110 | static inline int sb1000_start_get_set_command(const int ioaddr[], |
111 | const char* name); |
112 | static int sb1000_end_get_set_command(const int ioaddr[], |
113 | const char* name); |
114 | static int sb1000_activate(const int ioaddr[], const char* name); |
115 | static int sb1000_get_firmware_version(const int ioaddr[], |
116 | const char* name, unsigned char version[], int do_end); |
117 | static int sb1000_get_frequency(const int ioaddr[], const char* name, |
118 | int* frequency); |
119 | static int sb1000_set_frequency(const int ioaddr[], const char* name, |
120 | int frequency); |
121 | static int sb1000_get_PIDs(const int ioaddr[], const char* name, |
122 | short PID[]); |
123 | static int sb1000_set_PIDs(const int ioaddr[], const char* name, |
124 | const short PID[]); |
125 | |
126 | /* SB1000 commands for frame rx interrupt */ |
127 | static int sb1000_rx(struct net_device *dev); |
128 | static void sb1000_error_dpc(struct net_device *dev); |
129 | |
130 | static const struct pnp_device_id sb1000_pnp_ids[] = { |
131 | { "GIC1000" , 0 }, |
132 | { "" , 0 } |
133 | }; |
134 | MODULE_DEVICE_TABLE(pnp, sb1000_pnp_ids); |
135 | |
136 | static const struct net_device_ops sb1000_netdev_ops = { |
137 | .ndo_open = sb1000_open, |
138 | .ndo_start_xmit = sb1000_start_xmit, |
139 | .ndo_siocdevprivate = sb1000_siocdevprivate, |
140 | .ndo_stop = sb1000_close, |
141 | .ndo_set_mac_address = eth_mac_addr, |
142 | .ndo_validate_addr = eth_validate_addr, |
143 | }; |
144 | |
145 | static int |
146 | sb1000_probe_one(struct pnp_dev *pdev, const struct pnp_device_id *id) |
147 | { |
148 | struct net_device *dev; |
149 | unsigned short ioaddr[2], irq; |
150 | unsigned int serial_number; |
151 | int error = -ENODEV; |
152 | u8 addr[ETH_ALEN]; |
153 | |
154 | if (pnp_device_attach(pnp_dev: pdev) < 0) |
155 | return -ENODEV; |
156 | if (pnp_activate_dev(dev: pdev) < 0) |
157 | goto out_detach; |
158 | |
159 | if (!pnp_port_valid(dev: pdev, bar: 0) || !pnp_port_valid(dev: pdev, bar: 1)) |
160 | goto out_disable; |
161 | if (!pnp_irq_valid(dev: pdev, bar: 0)) |
162 | goto out_disable; |
163 | |
164 | serial_number = pdev->card->serial; |
165 | |
166 | ioaddr[0] = pnp_port_start(dev: pdev, bar: 0); |
167 | ioaddr[1] = pnp_port_start(dev: pdev, bar: 0); |
168 | |
169 | irq = pnp_irq(dev: pdev, bar: 0); |
170 | |
171 | if (!request_region(ioaddr[0], 16, "sb1000" )) |
172 | goto out_disable; |
173 | if (!request_region(ioaddr[1], 16, "sb1000" )) |
174 | goto out_release_region0; |
175 | |
176 | dev = alloc_etherdev(sizeof(struct sb1000_private)); |
177 | if (!dev) { |
178 | error = -ENOMEM; |
179 | goto out_release_regions; |
180 | } |
181 | |
182 | |
183 | dev->base_addr = ioaddr[0]; |
184 | /* mem_start holds the second I/O address */ |
185 | dev->mem_start = ioaddr[1]; |
186 | dev->irq = irq; |
187 | |
188 | if (sb1000_debug > 0) |
189 | printk(KERN_NOTICE "%s: sb1000 at (%#3.3lx,%#3.3lx), " |
190 | "S/N %#8.8x, IRQ %d.\n" , dev->name, dev->base_addr, |
191 | dev->mem_start, serial_number, dev->irq); |
192 | |
193 | /* |
194 | * The SB1000 is an rx-only cable modem device. The uplink is a modem |
195 | * and we do not want to arp on it. |
196 | */ |
197 | dev->flags = IFF_POINTOPOINT|IFF_NOARP; |
198 | |
199 | SET_NETDEV_DEV(dev, &pdev->dev); |
200 | |
201 | if (sb1000_debug > 0) |
202 | printk(KERN_NOTICE "%s" , version); |
203 | |
204 | dev->netdev_ops = &sb1000_netdev_ops; |
205 | |
206 | /* hardware address is 0:0:serial_number */ |
207 | addr[0] = 0; |
208 | addr[1] = 0; |
209 | addr[2] = serial_number >> 24 & 0xff; |
210 | addr[3] = serial_number >> 16 & 0xff; |
211 | addr[4] = serial_number >> 8 & 0xff; |
212 | addr[5] = serial_number >> 0 & 0xff; |
213 | eth_hw_addr_set(dev, addr); |
214 | |
215 | pnp_set_drvdata(pdev, data: dev); |
216 | |
217 | error = register_netdev(dev); |
218 | if (error) |
219 | goto out_free_netdev; |
220 | return 0; |
221 | |
222 | out_free_netdev: |
223 | free_netdev(dev); |
224 | out_release_regions: |
225 | release_region(ioaddr[1], 16); |
226 | out_release_region0: |
227 | release_region(ioaddr[0], 16); |
228 | out_disable: |
229 | pnp_disable_dev(dev: pdev); |
230 | out_detach: |
231 | pnp_device_detach(pnp_dev: pdev); |
232 | return error; |
233 | } |
234 | |
235 | static void |
236 | sb1000_remove_one(struct pnp_dev *pdev) |
237 | { |
238 | struct net_device *dev = pnp_get_drvdata(pdev); |
239 | |
240 | unregister_netdev(dev); |
241 | release_region(dev->base_addr, 16); |
242 | release_region(dev->mem_start, 16); |
243 | free_netdev(dev); |
244 | } |
245 | |
246 | static struct pnp_driver sb1000_driver = { |
247 | .name = "sb1000" , |
248 | .id_table = sb1000_pnp_ids, |
249 | .probe = sb1000_probe_one, |
250 | .remove = sb1000_remove_one, |
251 | }; |
252 | |
253 | |
254 | /* |
255 | * SB1000 hardware routines to be used during open/configuration phases |
256 | */ |
257 | |
258 | static const int TimeOutJiffies = (875 * HZ) / 100; |
259 | |
260 | /* Card Wait For Busy Clear (cannot be used during an interrupt) */ |
261 | static int |
262 | card_wait_for_busy_clear(const int ioaddr[], const char* name) |
263 | { |
264 | unsigned char a; |
265 | unsigned long timeout; |
266 | |
267 | a = inb(port: ioaddr[0] + 7); |
268 | timeout = jiffies + TimeOutJiffies; |
269 | while (a & 0x80 || a & 0x40) { |
270 | /* a little sleep */ |
271 | yield(); |
272 | |
273 | a = inb(port: ioaddr[0] + 7); |
274 | if (time_after_eq(jiffies, timeout)) { |
275 | printk(KERN_WARNING "%s: card_wait_for_busy_clear timeout\n" , |
276 | name); |
277 | return -ETIME; |
278 | } |
279 | } |
280 | |
281 | return 0; |
282 | } |
283 | |
284 | /* Card Wait For Ready (cannot be used during an interrupt) */ |
285 | static int |
286 | card_wait_for_ready(const int ioaddr[], const char* name, unsigned char in[]) |
287 | { |
288 | unsigned char a; |
289 | unsigned long timeout; |
290 | |
291 | a = inb(port: ioaddr[1] + 6); |
292 | timeout = jiffies + TimeOutJiffies; |
293 | while (a & 0x80 || !(a & 0x40)) { |
294 | /* a little sleep */ |
295 | yield(); |
296 | |
297 | a = inb(port: ioaddr[1] + 6); |
298 | if (time_after_eq(jiffies, timeout)) { |
299 | printk(KERN_WARNING "%s: card_wait_for_ready timeout\n" , |
300 | name); |
301 | return -ETIME; |
302 | } |
303 | } |
304 | |
305 | in[1] = inb(port: ioaddr[0] + 1); |
306 | in[2] = inb(port: ioaddr[0] + 2); |
307 | in[3] = inb(port: ioaddr[0] + 3); |
308 | in[4] = inb(port: ioaddr[0] + 4); |
309 | in[0] = inb(port: ioaddr[0] + 5); |
310 | in[6] = inb(port: ioaddr[0] + 6); |
311 | in[5] = inb(port: ioaddr[1] + 6); |
312 | return 0; |
313 | } |
314 | |
315 | /* Card Send Command (cannot be used during an interrupt) */ |
316 | static int |
317 | card_send_command(const int ioaddr[], const char* name, |
318 | const unsigned char out[], unsigned char in[]) |
319 | { |
320 | int status; |
321 | |
322 | if ((status = card_wait_for_busy_clear(ioaddr, name))) |
323 | return status; |
324 | outb(value: 0xa0, port: ioaddr[0] + 6); |
325 | outb(value: out[2], port: ioaddr[0] + 1); |
326 | outb(value: out[3], port: ioaddr[0] + 2); |
327 | outb(value: out[4], port: ioaddr[0] + 3); |
328 | outb(value: out[5], port: ioaddr[0] + 4); |
329 | outb(value: out[1], port: ioaddr[0] + 5); |
330 | outb(value: 0xa0, port: ioaddr[0] + 6); |
331 | outb(value: out[0], port: ioaddr[0] + 7); |
332 | if (out[0] != 0x20 && out[0] != 0x30) { |
333 | if ((status = card_wait_for_ready(ioaddr, name, in))) |
334 | return status; |
335 | inb(port: ioaddr[0] + 7); |
336 | if (sb1000_debug > 3) |
337 | printk(KERN_DEBUG "%s: card_send_command " |
338 | "out: %02x%02x%02x%02x%02x%02x " |
339 | "in: %02x%02x%02x%02x%02x%02x%02x\n" , name, |
340 | out[0], out[1], out[2], out[3], out[4], out[5], |
341 | in[0], in[1], in[2], in[3], in[4], in[5], in[6]); |
342 | } else { |
343 | if (sb1000_debug > 3) |
344 | printk(KERN_DEBUG "%s: card_send_command " |
345 | "out: %02x%02x%02x%02x%02x%02x\n" , name, |
346 | out[0], out[1], out[2], out[3], out[4], out[5]); |
347 | } |
348 | |
349 | if (out[1] != 0x1b) { |
350 | if (out[0] >= 0x80 && in[0] != (out[1] | 0x80)) |
351 | return -EIO; |
352 | } |
353 | return 0; |
354 | } |
355 | |
356 | |
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) */ |
363 | static int |
364 | sb1000_wait_for_ready(const int ioaddr[], const char* name) |
365 | { |
366 | unsigned long timeout; |
367 | |
368 | timeout = jiffies + Sb1000TimeOutJiffies; |
369 | while (inb(port: 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(port: 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(port: ioaddr[0] + 7); |
385 | return 0; |
386 | } |
387 | |
388 | /* Card Wait For Ready Clear (to be used during frame rx) */ |
389 | static int |
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(port: 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(port: 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) */ |
414 | static void |
415 | sb1000_send_command(const int ioaddr[], const char* name, |
416 | const unsigned char out[]) |
417 | { |
418 | outb(value: out[2], port: ioaddr[0] + 1); |
419 | outb(value: out[3], port: ioaddr[0] + 2); |
420 | outb(value: out[4], port: ioaddr[0] + 3); |
421 | outb(value: out[5], port: ioaddr[0] + 4); |
422 | outb(value: out[1], port: ioaddr[0] + 5); |
423 | outb(value: out[0], port: 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 | } |
428 | |
429 | /* Card Read Status (to be used during frame rx) */ |
430 | static void |
431 | sb1000_read_status(const int ioaddr[], unsigned char in[]) |
432 | { |
433 | in[1] = inb(port: ioaddr[0] + 1); |
434 | in[2] = inb(port: ioaddr[0] + 2); |
435 | in[3] = inb(port: ioaddr[0] + 3); |
436 | in[4] = inb(port: ioaddr[0] + 4); |
437 | in[0] = inb(port: ioaddr[0] + 5); |
438 | } |
439 | |
440 | /* Issue Read Command (to be used during frame rx) */ |
441 | static void |
442 | sb1000_issue_read_command(const int ioaddr[], const char* name) |
443 | { |
444 | static const unsigned char Command0[6] = {0x20, 0x00, 0x00, 0x01, 0x00, 0x00}; |
445 | |
446 | sb1000_wait_for_ready_clear(ioaddr, name); |
447 | outb(value: 0xa0, port: ioaddr[0] + 6); |
448 | sb1000_send_command(ioaddr, name, out: Command0); |
449 | } |
450 | |
451 | |
452 | /* |
453 | * SB1000 commands for open/configuration |
454 | */ |
455 | /* reset SB1000 card */ |
456 | static int |
457 | sb1000_reset(const int ioaddr[], const char* name) |
458 | { |
459 | static const unsigned char Command0[6] = {0x80, 0x16, 0x00, 0x00, 0x00, 0x00}; |
460 | |
461 | unsigned char st[7]; |
462 | int port, status; |
463 | |
464 | port = ioaddr[1] + 6; |
465 | outb(value: 0x4, port); |
466 | inb(port); |
467 | udelay(1000); |
468 | outb(value: 0x0, port); |
469 | inb(port); |
470 | ssleep(seconds: 1); |
471 | outb(value: 0x4, port); |
472 | inb(port); |
473 | udelay(1000); |
474 | outb(value: 0x0, port); |
475 | inb(port); |
476 | udelay(0); |
477 | |
478 | if ((status = card_send_command(ioaddr, name, out: Command0, in: st))) |
479 | return status; |
480 | if (st[3] != 0xf0) |
481 | return -EIO; |
482 | return 0; |
483 | } |
484 | |
485 | /* check SB1000 firmware CRC */ |
486 | static int |
487 | sb1000_check_CRC(const int ioaddr[], const char* name) |
488 | { |
489 | static const unsigned char Command0[6] = {0x80, 0x1f, 0x00, 0x00, 0x00, 0x00}; |
490 | |
491 | unsigned char st[7]; |
492 | int status; |
493 | |
494 | /* check CRC */ |
495 | if ((status = card_send_command(ioaddr, name, out: Command0, in: st))) |
496 | return status; |
497 | if (st[1] != st[3] || st[2] != st[4]) |
498 | return -EIO; |
499 | return 0; |
500 | } |
501 | |
502 | static inline int |
503 | sb1000_start_get_set_command(const int ioaddr[], const char* name) |
504 | { |
505 | static const unsigned char Command0[6] = {0x80, 0x1b, 0x00, 0x00, 0x00, 0x00}; |
506 | |
507 | unsigned char st[7]; |
508 | |
509 | return card_send_command(ioaddr, name, out: Command0, in: st); |
510 | } |
511 | |
512 | static int |
513 | sb1000_end_get_set_command(const int ioaddr[], const char* name) |
514 | { |
515 | static const unsigned char Command0[6] = {0x80, 0x1b, 0x02, 0x00, 0x00, 0x00}; |
516 | static const unsigned char Command1[6] = {0x20, 0x00, 0x00, 0x00, 0x00, 0x00}; |
517 | |
518 | unsigned char st[7]; |
519 | int status; |
520 | |
521 | if ((status = card_send_command(ioaddr, name, out: Command0, in: st))) |
522 | return status; |
523 | return card_send_command(ioaddr, name, out: Command1, in: st); |
524 | } |
525 | |
526 | static int |
527 | sb1000_activate(const int ioaddr[], const char* name) |
528 | { |
529 | static const unsigned char Command0[6] = {0x80, 0x11, 0x00, 0x00, 0x00, 0x00}; |
530 | static const unsigned char Command1[6] = {0x80, 0x16, 0x00, 0x00, 0x00, 0x00}; |
531 | |
532 | unsigned char st[7]; |
533 | int status; |
534 | |
535 | ssleep(seconds: 1); |
536 | status = card_send_command(ioaddr, name, out: Command0, in: st); |
537 | if (status) |
538 | return status; |
539 | status = card_send_command(ioaddr, name, out: Command1, in: st); |
540 | if (status) |
541 | return status; |
542 | if (st[3] != 0xf1) { |
543 | status = sb1000_start_get_set_command(ioaddr, name); |
544 | if (status) |
545 | return status; |
546 | return -EIO; |
547 | } |
548 | udelay(1000); |
549 | return sb1000_start_get_set_command(ioaddr, name); |
550 | } |
551 | |
552 | /* get SB1000 firmware version */ |
553 | static int |
554 | sb1000_get_firmware_version(const int ioaddr[], const char* name, |
555 | unsigned char version[], int do_end) |
556 | { |
557 | static const unsigned char Command0[6] = {0x80, 0x23, 0x00, 0x00, 0x00, 0x00}; |
558 | |
559 | unsigned char st[7]; |
560 | int status; |
561 | |
562 | if ((status = sb1000_start_get_set_command(ioaddr, name))) |
563 | return status; |
564 | if ((status = card_send_command(ioaddr, name, out: Command0, in: st))) |
565 | return status; |
566 | if (st[0] != 0xa3) |
567 | return -EIO; |
568 | version[0] = st[1]; |
569 | version[1] = st[2]; |
570 | if (do_end) |
571 | return sb1000_end_get_set_command(ioaddr, name); |
572 | else |
573 | return 0; |
574 | } |
575 | |
576 | /* get SB1000 frequency */ |
577 | static int |
578 | sb1000_get_frequency(const int ioaddr[], const char* name, int* frequency) |
579 | { |
580 | static const unsigned char Command0[6] = {0x80, 0x44, 0x00, 0x00, 0x00, 0x00}; |
581 | |
582 | unsigned char st[7]; |
583 | int status; |
584 | |
585 | udelay(1000); |
586 | if ((status = sb1000_start_get_set_command(ioaddr, name))) |
587 | return status; |
588 | if ((status = card_send_command(ioaddr, name, out: Command0, in: st))) |
589 | return status; |
590 | *frequency = ((st[1] << 8 | st[2]) << 8 | st[3]) << 8 | st[4]; |
591 | return sb1000_end_get_set_command(ioaddr, name); |
592 | } |
593 | |
594 | /* set SB1000 frequency */ |
595 | static int |
596 | sb1000_set_frequency(const int ioaddr[], const char* name, int frequency) |
597 | { |
598 | unsigned char st[7]; |
599 | int status; |
600 | unsigned char Command0[6] = {0x80, 0x29, 0x00, 0x00, 0x00, 0x00}; |
601 | |
602 | const int FrequencyLowerLimit = 57000; |
603 | const int FrequencyUpperLimit = 804000; |
604 | |
605 | if (frequency < FrequencyLowerLimit || frequency > FrequencyUpperLimit) { |
606 | printk(KERN_ERR "%s: frequency chosen (%d kHz) is not in the range " |
607 | "[%d,%d] kHz\n" , name, frequency, FrequencyLowerLimit, |
608 | FrequencyUpperLimit); |
609 | return -EINVAL; |
610 | } |
611 | udelay(1000); |
612 | if ((status = sb1000_start_get_set_command(ioaddr, name))) |
613 | return status; |
614 | Command0[5] = frequency & 0xff; |
615 | frequency >>= 8; |
616 | Command0[4] = frequency & 0xff; |
617 | frequency >>= 8; |
618 | Command0[3] = frequency & 0xff; |
619 | frequency >>= 8; |
620 | Command0[2] = frequency & 0xff; |
621 | return card_send_command(ioaddr, name, out: Command0, in: st); |
622 | } |
623 | |
624 | /* get SB1000 PIDs */ |
625 | static int |
626 | sb1000_get_PIDs(const int ioaddr[], const char* name, short PID[]) |
627 | { |
628 | static const unsigned char Command0[6] = {0x80, 0x40, 0x00, 0x00, 0x00, 0x00}; |
629 | static const unsigned char Command1[6] = {0x80, 0x41, 0x00, 0x00, 0x00, 0x00}; |
630 | static const unsigned char Command2[6] = {0x80, 0x42, 0x00, 0x00, 0x00, 0x00}; |
631 | static const unsigned char Command3[6] = {0x80, 0x43, 0x00, 0x00, 0x00, 0x00}; |
632 | |
633 | unsigned char st[7]; |
634 | int status; |
635 | |
636 | udelay(1000); |
637 | if ((status = sb1000_start_get_set_command(ioaddr, name))) |
638 | return status; |
639 | |
640 | if ((status = card_send_command(ioaddr, name, out: Command0, in: st))) |
641 | return status; |
642 | PID[0] = st[1] << 8 | st[2]; |
643 | |
644 | if ((status = card_send_command(ioaddr, name, out: Command1, in: st))) |
645 | return status; |
646 | PID[1] = st[1] << 8 | st[2]; |
647 | |
648 | if ((status = card_send_command(ioaddr, name, out: Command2, in: st))) |
649 | return status; |
650 | PID[2] = st[1] << 8 | st[2]; |
651 | |
652 | if ((status = card_send_command(ioaddr, name, out: Command3, in: st))) |
653 | return status; |
654 | PID[3] = st[1] << 8 | st[2]; |
655 | |
656 | return sb1000_end_get_set_command(ioaddr, name); |
657 | } |
658 | |
659 | /* set SB1000 PIDs */ |
660 | static int |
661 | sb1000_set_PIDs(const int ioaddr[], const char* name, const short PID[]) |
662 | { |
663 | static const unsigned char Command4[6] = {0x80, 0x2e, 0x00, 0x00, 0x00, 0x00}; |
664 | |
665 | unsigned char st[7]; |
666 | short p; |
667 | int status; |
668 | unsigned char Command0[6] = {0x80, 0x31, 0x00, 0x00, 0x00, 0x00}; |
669 | unsigned char Command1[6] = {0x80, 0x32, 0x00, 0x00, 0x00, 0x00}; |
670 | unsigned char Command2[6] = {0x80, 0x33, 0x00, 0x00, 0x00, 0x00}; |
671 | unsigned char Command3[6] = {0x80, 0x34, 0x00, 0x00, 0x00, 0x00}; |
672 | |
673 | udelay(1000); |
674 | if ((status = sb1000_start_get_set_command(ioaddr, name))) |
675 | return status; |
676 | |
677 | p = PID[0]; |
678 | Command0[3] = p & 0xff; |
679 | p >>= 8; |
680 | Command0[2] = p & 0xff; |
681 | if ((status = card_send_command(ioaddr, name, out: Command0, in: st))) |
682 | return status; |
683 | |
684 | p = PID[1]; |
685 | Command1[3] = p & 0xff; |
686 | p >>= 8; |
687 | Command1[2] = p & 0xff; |
688 | if ((status = card_send_command(ioaddr, name, out: Command1, in: st))) |
689 | return status; |
690 | |
691 | p = PID[2]; |
692 | Command2[3] = p & 0xff; |
693 | p >>= 8; |
694 | Command2[2] = p & 0xff; |
695 | if ((status = card_send_command(ioaddr, name, out: Command2, in: st))) |
696 | return status; |
697 | |
698 | p = PID[3]; |
699 | Command3[3] = p & 0xff; |
700 | p >>= 8; |
701 | Command3[2] = p & 0xff; |
702 | if ((status = card_send_command(ioaddr, name, out: Command3, in: st))) |
703 | return status; |
704 | |
705 | if ((status = card_send_command(ioaddr, name, out: Command4, in: st))) |
706 | return status; |
707 | return sb1000_end_get_set_command(ioaddr, name); |
708 | } |
709 | |
710 | |
711 | static void |
712 | sb1000_print_status_buffer(const char* name, unsigned char st[], |
713 | unsigned char buffer[], int size) |
714 | { |
715 | int i, j, k; |
716 | |
717 | printk(KERN_DEBUG "%s: status: %02x %02x\n" , name, st[0], st[1]); |
718 | if (buffer[24] == 0x08 && buffer[25] == 0x00 && buffer[26] == 0x45) { |
719 | printk(KERN_DEBUG "%s: length: %d protocol: %d from: %d.%d.%d.%d:%d " |
720 | "to %d.%d.%d.%d:%d\n" , name, buffer[28] << 8 | buffer[29], |
721 | buffer[35], buffer[38], buffer[39], buffer[40], buffer[41], |
722 | buffer[46] << 8 | buffer[47], |
723 | buffer[42], buffer[43], buffer[44], buffer[45], |
724 | buffer[48] << 8 | buffer[49]); |
725 | } else { |
726 | for (i = 0, k = 0; i < (size + 7) / 8; i++) { |
727 | printk(KERN_DEBUG "%s: %s" , name, i ? " " : "buffer:" ); |
728 | for (j = 0; j < 8 && k < size; j++, k++) |
729 | printk(" %02x" , buffer[k]); |
730 | printk("\n" ); |
731 | } |
732 | } |
733 | } |
734 | |
735 | /* |
736 | * SB1000 commands for frame rx interrupt |
737 | */ |
738 | /* receive a single frame and assemble datagram |
739 | * (this is the heart of the interrupt routine) |
740 | */ |
741 | static int |
742 | sb1000_rx(struct net_device *dev) |
743 | { |
744 | |
745 | #define FRAMESIZE 184 |
746 | unsigned char st[2], buffer[FRAMESIZE], session_id, frame_id; |
747 | short dlen; |
748 | int ioaddr, ns; |
749 | unsigned int skbsize; |
750 | struct sk_buff *skb; |
751 | struct sb1000_private *lp = netdev_priv(dev); |
752 | struct net_device_stats *stats = &dev->stats; |
753 | |
754 | /* SB1000 frame constants */ |
755 | const int FrameSize = FRAMESIZE; |
756 | const int = 8; |
757 | const int = NewDatagramHeaderSkip + 18; |
758 | const int NewDatagramDataSize = FrameSize - NewDatagramHeaderSize; |
759 | const int = 7; |
760 | const int = ContDatagramHeaderSkip + 1; |
761 | const int ContDatagramDataSize = FrameSize - ContDatagramHeaderSize; |
762 | const int TrailerSize = 4; |
763 | |
764 | ioaddr = dev->base_addr; |
765 | |
766 | insw(port: ioaddr, addr: (unsigned short*) st, count: 1); |
767 | #ifdef XXXDEBUG |
768 | printk("cm0: received: %02x %02x\n" , st[0], st[1]); |
769 | #endif /* XXXDEBUG */ |
770 | lp->rx_frames++; |
771 | |
772 | /* decide if it is a good or bad frame */ |
773 | for (ns = 0; ns < NPIDS; ns++) { |
774 | session_id = lp->rx_session_id[ns]; |
775 | frame_id = lp->rx_frame_id[ns]; |
776 | if (st[0] == session_id) { |
777 | if (st[1] == frame_id || (!frame_id && (st[1] & 0xf0) == 0x30)) { |
778 | goto good_frame; |
779 | } else if ((st[1] & 0xf0) == 0x30 && (st[0] & 0x40)) { |
780 | goto skipped_frame; |
781 | } else { |
782 | goto bad_frame; |
783 | } |
784 | } else if (st[0] == (session_id | 0x40)) { |
785 | if ((st[1] & 0xf0) == 0x30) { |
786 | goto skipped_frame; |
787 | } else { |
788 | goto bad_frame; |
789 | } |
790 | } |
791 | } |
792 | goto bad_frame; |
793 | |
794 | skipped_frame: |
795 | stats->rx_frame_errors++; |
796 | skb = lp->rx_skb[ns]; |
797 | if (sb1000_debug > 1) |
798 | printk(KERN_WARNING "%s: missing frame(s): got %02x %02x " |
799 | "expecting %02x %02x\n" , dev->name, st[0], st[1], |
800 | skb ? session_id : session_id | 0x40, frame_id); |
801 | if (skb) { |
802 | dev_kfree_skb(skb); |
803 | skb = NULL; |
804 | } |
805 | |
806 | good_frame: |
807 | lp->rx_frame_id[ns] = 0x30 | ((st[1] + 1) & 0x0f); |
808 | /* new datagram */ |
809 | if (st[0] & 0x40) { |
810 | /* get data length */ |
811 | insw(port: ioaddr, addr: buffer, count: NewDatagramHeaderSize / 2); |
812 | #ifdef XXXDEBUG |
813 | printk("cm0: IP identification: %02x%02x fragment offset: %02x%02x\n" , buffer[30], buffer[31], buffer[32], buffer[33]); |
814 | #endif /* XXXDEBUG */ |
815 | if (buffer[0] != NewDatagramHeaderSkip) { |
816 | if (sb1000_debug > 1) |
817 | printk(KERN_WARNING "%s: new datagram header skip error: " |
818 | "got %02x expecting %02x\n" , dev->name, buffer[0], |
819 | NewDatagramHeaderSkip); |
820 | stats->rx_length_errors++; |
821 | insw(port: ioaddr, addr: buffer, count: NewDatagramDataSize / 2); |
822 | goto bad_frame_next; |
823 | } |
824 | dlen = ((buffer[NewDatagramHeaderSkip + 3] & 0x0f) << 8 | |
825 | buffer[NewDatagramHeaderSkip + 4]) - 17; |
826 | if (dlen > SB1000_MRU) { |
827 | if (sb1000_debug > 1) |
828 | printk(KERN_WARNING "%s: datagram length (%d) greater " |
829 | "than MRU (%d)\n" , dev->name, dlen, SB1000_MRU); |
830 | stats->rx_length_errors++; |
831 | insw(port: ioaddr, addr: buffer, count: NewDatagramDataSize / 2); |
832 | goto bad_frame_next; |
833 | } |
834 | lp->rx_dlen[ns] = dlen; |
835 | /* compute size to allocate for datagram */ |
836 | skbsize = dlen + FrameSize; |
837 | if ((skb = alloc_skb(size: skbsize, GFP_ATOMIC)) == NULL) { |
838 | if (sb1000_debug > 1) |
839 | printk(KERN_WARNING "%s: can't allocate %d bytes long " |
840 | "skbuff\n" , dev->name, skbsize); |
841 | stats->rx_dropped++; |
842 | insw(port: ioaddr, addr: buffer, count: NewDatagramDataSize / 2); |
843 | goto dropped_frame; |
844 | } |
845 | skb->dev = dev; |
846 | skb_reset_mac_header(skb); |
847 | skb->protocol = (unsigned short) buffer[NewDatagramHeaderSkip + 16]; |
848 | insw(port: ioaddr, addr: skb_put(skb, len: NewDatagramDataSize), |
849 | count: NewDatagramDataSize / 2); |
850 | lp->rx_skb[ns] = skb; |
851 | } else { |
852 | /* continuation of previous datagram */ |
853 | insw(port: ioaddr, addr: buffer, count: ContDatagramHeaderSize / 2); |
854 | if (buffer[0] != ContDatagramHeaderSkip) { |
855 | if (sb1000_debug > 1) |
856 | printk(KERN_WARNING "%s: cont datagram header skip error: " |
857 | "got %02x expecting %02x\n" , dev->name, buffer[0], |
858 | ContDatagramHeaderSkip); |
859 | stats->rx_length_errors++; |
860 | insw(port: ioaddr, addr: buffer, count: ContDatagramDataSize / 2); |
861 | goto bad_frame_next; |
862 | } |
863 | skb = lp->rx_skb[ns]; |
864 | insw(port: ioaddr, addr: skb_put(skb, len: ContDatagramDataSize), |
865 | count: ContDatagramDataSize / 2); |
866 | dlen = lp->rx_dlen[ns]; |
867 | } |
868 | if (skb->len < dlen + TrailerSize) { |
869 | lp->rx_session_id[ns] &= ~0x40; |
870 | return 0; |
871 | } |
872 | |
873 | /* datagram completed: send to upper level */ |
874 | skb_trim(skb, len: dlen); |
875 | __netif_rx(skb); |
876 | stats->rx_bytes+=dlen; |
877 | stats->rx_packets++; |
878 | lp->rx_skb[ns] = NULL; |
879 | lp->rx_session_id[ns] |= 0x40; |
880 | return 0; |
881 | |
882 | bad_frame: |
883 | insw(port: ioaddr, addr: buffer, count: FrameSize / 2); |
884 | if (sb1000_debug > 1) |
885 | printk(KERN_WARNING "%s: frame error: got %02x %02x\n" , |
886 | dev->name, st[0], st[1]); |
887 | stats->rx_frame_errors++; |
888 | bad_frame_next: |
889 | if (sb1000_debug > 2) |
890 | sb1000_print_status_buffer(name: dev->name, st, buffer, size: FrameSize); |
891 | dropped_frame: |
892 | stats->rx_errors++; |
893 | if (ns < NPIDS) { |
894 | if ((skb = lp->rx_skb[ns])) { |
895 | dev_kfree_skb(skb); |
896 | lp->rx_skb[ns] = NULL; |
897 | } |
898 | lp->rx_session_id[ns] |= 0x40; |
899 | } |
900 | return -1; |
901 | } |
902 | |
903 | static void |
904 | sb1000_error_dpc(struct net_device *dev) |
905 | { |
906 | static const unsigned char Command0[6] = {0x80, 0x26, 0x00, 0x00, 0x00, 0x00}; |
907 | |
908 | char *name; |
909 | unsigned char st[5]; |
910 | int ioaddr[2]; |
911 | struct sb1000_private *lp = netdev_priv(dev); |
912 | const int ErrorDpcCounterInitialize = 200; |
913 | |
914 | ioaddr[0] = dev->base_addr; |
915 | /* mem_start holds the second I/O address */ |
916 | ioaddr[1] = dev->mem_start; |
917 | name = dev->name; |
918 | |
919 | sb1000_wait_for_ready_clear(ioaddr, name); |
920 | sb1000_send_command(ioaddr, name, out: Command0); |
921 | sb1000_wait_for_ready(ioaddr, name); |
922 | sb1000_read_status(ioaddr, in: st); |
923 | if (st[1] & 0x10) |
924 | lp->rx_error_dpc_count = ErrorDpcCounterInitialize; |
925 | } |
926 | |
927 | |
928 | /* |
929 | * Linux interface functions |
930 | */ |
931 | static int |
932 | sb1000_open(struct net_device *dev) |
933 | { |
934 | char *name; |
935 | int ioaddr[2], status; |
936 | struct sb1000_private *lp = netdev_priv(dev); |
937 | const unsigned short FirmwareVersion[] = {0x01, 0x01}; |
938 | |
939 | ioaddr[0] = dev->base_addr; |
940 | /* mem_start holds the second I/O address */ |
941 | ioaddr[1] = dev->mem_start; |
942 | name = dev->name; |
943 | |
944 | /* initialize sb1000 */ |
945 | if ((status = sb1000_reset(ioaddr, name))) |
946 | return status; |
947 | ssleep(seconds: 1); |
948 | if ((status = sb1000_check_CRC(ioaddr, name))) |
949 | return status; |
950 | |
951 | /* initialize private data before board can catch interrupts */ |
952 | lp->rx_skb[0] = NULL; |
953 | lp->rx_skb[1] = NULL; |
954 | lp->rx_skb[2] = NULL; |
955 | lp->rx_skb[3] = NULL; |
956 | lp->rx_dlen[0] = 0; |
957 | lp->rx_dlen[1] = 0; |
958 | lp->rx_dlen[2] = 0; |
959 | lp->rx_dlen[3] = 0; |
960 | lp->rx_frames = 0; |
961 | lp->rx_error_count = 0; |
962 | lp->rx_error_dpc_count = 0; |
963 | lp->rx_session_id[0] = 0x50; |
964 | lp->rx_session_id[1] = 0x48; |
965 | lp->rx_session_id[2] = 0x44; |
966 | lp->rx_session_id[3] = 0x42; |
967 | lp->rx_frame_id[0] = 0; |
968 | lp->rx_frame_id[1] = 0; |
969 | lp->rx_frame_id[2] = 0; |
970 | lp->rx_frame_id[3] = 0; |
971 | if (request_irq(irq: dev->irq, handler: sb1000_interrupt, flags: 0, name: "sb1000" , dev)) { |
972 | return -EAGAIN; |
973 | } |
974 | |
975 | if (sb1000_debug > 2) |
976 | printk(KERN_DEBUG "%s: Opening, IRQ %d\n" , name, dev->irq); |
977 | |
978 | /* Activate board and check firmware version */ |
979 | udelay(1000); |
980 | if ((status = sb1000_activate(ioaddr, name))) |
981 | return status; |
982 | udelay(0); |
983 | if ((status = sb1000_get_firmware_version(ioaddr, name, version, do_end: 0))) |
984 | return status; |
985 | if (version[0] != FirmwareVersion[0] || version[1] != FirmwareVersion[1]) |
986 | printk(KERN_WARNING "%s: found firmware version %x.%02x " |
987 | "(should be %x.%02x)\n" , name, version[0], version[1], |
988 | FirmwareVersion[0], FirmwareVersion[1]); |
989 | |
990 | |
991 | netif_start_queue(dev); |
992 | return 0; /* Always succeed */ |
993 | } |
994 | |
995 | static int sb1000_siocdevprivate(struct net_device *dev, struct ifreq *ifr, |
996 | void __user *data, int cmd) |
997 | { |
998 | char* name; |
999 | unsigned char version[2]; |
1000 | short PID[4]; |
1001 | int ioaddr[2], status, frequency; |
1002 | unsigned int stats[5]; |
1003 | struct sb1000_private *lp = netdev_priv(dev); |
1004 | |
1005 | if (!(dev && dev->flags & IFF_UP)) |
1006 | return -ENODEV; |
1007 | |
1008 | ioaddr[0] = dev->base_addr; |
1009 | /* mem_start holds the second I/O address */ |
1010 | ioaddr[1] = dev->mem_start; |
1011 | name = dev->name; |
1012 | |
1013 | switch (cmd) { |
1014 | case SIOCGCMSTATS: /* get statistics */ |
1015 | stats[0] = dev->stats.rx_bytes; |
1016 | stats[1] = lp->rx_frames; |
1017 | stats[2] = dev->stats.rx_packets; |
1018 | stats[3] = dev->stats.rx_errors; |
1019 | stats[4] = dev->stats.rx_dropped; |
1020 | if (copy_to_user(to: data, from: stats, n: sizeof(stats))) |
1021 | return -EFAULT; |
1022 | status = 0; |
1023 | break; |
1024 | |
1025 | case SIOCGCMFIRMWARE: /* get firmware version */ |
1026 | if ((status = sb1000_get_firmware_version(ioaddr, name, version, do_end: 1))) |
1027 | return status; |
1028 | if (copy_to_user(to: data, from: version, n: sizeof(version))) |
1029 | return -EFAULT; |
1030 | break; |
1031 | |
1032 | case SIOCGCMFREQUENCY: /* get frequency */ |
1033 | if ((status = sb1000_get_frequency(ioaddr, name, frequency: &frequency))) |
1034 | return status; |
1035 | if (put_user(frequency, (int __user *)data)) |
1036 | return -EFAULT; |
1037 | break; |
1038 | |
1039 | case SIOCSCMFREQUENCY: /* set frequency */ |
1040 | if (!capable(CAP_NET_ADMIN)) |
1041 | return -EPERM; |
1042 | if (get_user(frequency, (int __user *)data)) |
1043 | return -EFAULT; |
1044 | if ((status = sb1000_set_frequency(ioaddr, name, frequency))) |
1045 | return status; |
1046 | break; |
1047 | |
1048 | case SIOCGCMPIDS: /* get PIDs */ |
1049 | if ((status = sb1000_get_PIDs(ioaddr, name, PID))) |
1050 | return status; |
1051 | if (copy_to_user(to: data, from: PID, n: sizeof(PID))) |
1052 | return -EFAULT; |
1053 | break; |
1054 | |
1055 | case SIOCSCMPIDS: /* set PIDs */ |
1056 | if (!capable(CAP_NET_ADMIN)) |
1057 | return -EPERM; |
1058 | if (copy_from_user(to: PID, from: data, n: sizeof(PID))) |
1059 | return -EFAULT; |
1060 | if ((status = sb1000_set_PIDs(ioaddr, name, PID))) |
1061 | return status; |
1062 | /* set session_id, frame_id and pkt_type too */ |
1063 | lp->rx_session_id[0] = 0x50 | (PID[0] & 0x0f); |
1064 | lp->rx_session_id[1] = 0x48; |
1065 | lp->rx_session_id[2] = 0x44; |
1066 | lp->rx_session_id[3] = 0x42; |
1067 | lp->rx_frame_id[0] = 0; |
1068 | lp->rx_frame_id[1] = 0; |
1069 | lp->rx_frame_id[2] = 0; |
1070 | lp->rx_frame_id[3] = 0; |
1071 | break; |
1072 | |
1073 | default: |
1074 | status = -EINVAL; |
1075 | break; |
1076 | } |
1077 | return status; |
1078 | } |
1079 | |
1080 | /* transmit function: do nothing since SB1000 can't send anything out */ |
1081 | static netdev_tx_t |
1082 | sb1000_start_xmit(struct sk_buff *skb, struct net_device *dev) |
1083 | { |
1084 | printk(KERN_WARNING "%s: trying to transmit!!!\n" , dev->name); |
1085 | /* sb1000 can't xmit datagrams */ |
1086 | dev_kfree_skb(skb); |
1087 | return NETDEV_TX_OK; |
1088 | } |
1089 | |
1090 | /* SB1000 interrupt handler. */ |
1091 | static irqreturn_t sb1000_interrupt(int irq, void *dev_id) |
1092 | { |
1093 | static const unsigned char Command0[6] = {0x80, 0x2c, 0x00, 0x00, 0x00, 0x00}; |
1094 | static const unsigned char Command1[6] = {0x80, 0x2e, 0x00, 0x00, 0x00, 0x00}; |
1095 | |
1096 | char *name; |
1097 | unsigned char st; |
1098 | int ioaddr[2]; |
1099 | struct net_device *dev = dev_id; |
1100 | struct sb1000_private *lp = netdev_priv(dev); |
1101 | |
1102 | const int MaxRxErrorCount = 6; |
1103 | |
1104 | ioaddr[0] = dev->base_addr; |
1105 | /* mem_start holds the second I/O address */ |
1106 | ioaddr[1] = dev->mem_start; |
1107 | name = dev->name; |
1108 | |
1109 | /* is it a good interrupt? */ |
1110 | st = inb(port: ioaddr[1] + 6); |
1111 | if (!(st & 0x08 && st & 0x20)) { |
1112 | return IRQ_NONE; |
1113 | } |
1114 | |
1115 | if (sb1000_debug > 3) |
1116 | printk(KERN_DEBUG "%s: entering interrupt\n" , dev->name); |
1117 | |
1118 | st = inb(port: ioaddr[0] + 7); |
1119 | if (sb1000_rx(dev)) |
1120 | lp->rx_error_count++; |
1121 | #ifdef SB1000_DELAY |
1122 | udelay(SB1000_DELAY); |
1123 | #endif /* SB1000_DELAY */ |
1124 | sb1000_issue_read_command(ioaddr, name); |
1125 | if (st & 0x01) { |
1126 | sb1000_error_dpc(dev); |
1127 | sb1000_issue_read_command(ioaddr, name); |
1128 | } |
1129 | if (lp->rx_error_dpc_count && !(--lp->rx_error_dpc_count)) { |
1130 | sb1000_wait_for_ready_clear(ioaddr, name); |
1131 | sb1000_send_command(ioaddr, name, out: Command0); |
1132 | sb1000_wait_for_ready(ioaddr, name); |
1133 | sb1000_issue_read_command(ioaddr, name); |
1134 | } |
1135 | if (lp->rx_error_count >= MaxRxErrorCount) { |
1136 | sb1000_wait_for_ready_clear(ioaddr, name); |
1137 | sb1000_send_command(ioaddr, name, out: Command1); |
1138 | sb1000_wait_for_ready(ioaddr, name); |
1139 | sb1000_issue_read_command(ioaddr, name); |
1140 | lp->rx_error_count = 0; |
1141 | } |
1142 | |
1143 | return IRQ_HANDLED; |
1144 | } |
1145 | |
1146 | static int sb1000_close(struct net_device *dev) |
1147 | { |
1148 | int i; |
1149 | int ioaddr[2]; |
1150 | struct sb1000_private *lp = netdev_priv(dev); |
1151 | |
1152 | if (sb1000_debug > 2) |
1153 | printk(KERN_DEBUG "%s: Shutting down sb1000.\n" , dev->name); |
1154 | |
1155 | netif_stop_queue(dev); |
1156 | |
1157 | ioaddr[0] = dev->base_addr; |
1158 | /* mem_start holds the second I/O address */ |
1159 | ioaddr[1] = dev->mem_start; |
1160 | |
1161 | free_irq(dev->irq, dev); |
1162 | /* If we don't do this, we can't re-insmod it later. */ |
1163 | release_region(ioaddr[1], SB1000_IO_EXTENT); |
1164 | release_region(ioaddr[0], SB1000_IO_EXTENT); |
1165 | |
1166 | /* free rx_skb's if needed */ |
1167 | for (i=0; i<4; i++) { |
1168 | if (lp->rx_skb[i]) { |
1169 | dev_kfree_skb(lp->rx_skb[i]); |
1170 | } |
1171 | } |
1172 | return 0; |
1173 | } |
1174 | |
1175 | MODULE_AUTHOR("Franco Venturi <fventuri@mediaone.net>" ); |
1176 | MODULE_DESCRIPTION("General Instruments SB1000 driver" ); |
1177 | MODULE_LICENSE("GPL" ); |
1178 | |
1179 | module_pnp_driver(sb1000_driver); |
1180 | |