Commit | Line | Data |
---|---|---|
2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 LT |
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 | ||
1da177e4 LT |
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. | |
6aa20a22 | 27 | |
1da177e4 LT |
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> | |
d43c36dc | 35 | #include <linux/sched.h> |
1da177e4 LT |
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> | |
1da177e4 LT |
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> | |
5a0e3ad6 | 50 | #include <linux/gfp.h> |
1da177e4 LT |
51 | |
52 | #include <asm/io.h> | |
53 | #include <asm/processor.h> | |
7c0f6ba6 | 54 | #include <linux/uaccess.h> |
1da177e4 LT |
55 | |
56 | #ifdef SB1000_DEBUG | |
57 | static int sb1000_debug = SB1000_DEBUG; | |
58 | #else | |
f71e1309 | 59 | static const int sb1000_debug = 1; |
1da177e4 LT |
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]; | |
1da177e4 LT |
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_dev_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd); | |
61357325 SH |
82 | static netdev_tx_t sb1000_start_xmit(struct sk_buff *skb, |
83 | struct net_device *dev); | |
7d12e780 | 84 | static irqreturn_t sb1000_interrupt(int irq, void *dev_id); |
1da177e4 LT |
85 | static int sb1000_close(struct net_device *dev); |
86 | ||
87 | ||
88 | /* SB1000 hardware routines to be used during open/configuration phases */ | |
a8d06342 | 89 | static int card_wait_for_busy_clear(const int ioaddr[], |
1da177e4 | 90 | const char* name); |
a8d06342 | 91 | static int card_wait_for_ready(const int ioaddr[], const char* name, |
1da177e4 | 92 | unsigned char in[]); |
858119e1 | 93 | static int card_send_command(const int ioaddr[], const char* name, |
1da177e4 LT |
94 | const unsigned char out[], unsigned char in[]); |
95 | ||
96 | /* SB1000 hardware routines to be used during frame rx interrupt */ | |
a8d06342 DV |
97 | static int sb1000_wait_for_ready(const int ioaddr[], const char* name); |
98 | static int sb1000_wait_for_ready_clear(const int ioaddr[], | |
1da177e4 | 99 | const char* name); |
a8d06342 | 100 | static void sb1000_send_command(const int ioaddr[], const char* name, |
1da177e4 | 101 | const unsigned char out[]); |
a8d06342 DV |
102 | static void sb1000_read_status(const int ioaddr[], unsigned char in[]); |
103 | static void sb1000_issue_read_command(const int ioaddr[], | |
1da177e4 LT |
104 | const char* name); |
105 | ||
106 | /* SB1000 commands for open/configuration */ | |
a8d06342 DV |
107 | static int sb1000_reset(const int ioaddr[], const char* name); |
108 | static int sb1000_check_CRC(const int ioaddr[], const char* name); | |
1da177e4 LT |
109 | static inline int sb1000_start_get_set_command(const int ioaddr[], |
110 | const char* name); | |
a8d06342 | 111 | static int sb1000_end_get_set_command(const int ioaddr[], |
1da177e4 | 112 | const char* name); |
a8d06342 | 113 | static int sb1000_activate(const int ioaddr[], const char* name); |
1da177e4 LT |
114 | static int sb1000_get_firmware_version(const int ioaddr[], |
115 | const char* name, unsigned char version[], int do_end); | |
116 | static int sb1000_get_frequency(const int ioaddr[], const char* name, | |
117 | int* frequency); | |
118 | static int sb1000_set_frequency(const int ioaddr[], const char* name, | |
119 | int frequency); | |
120 | static int sb1000_get_PIDs(const int ioaddr[], const char* name, | |
121 | short PID[]); | |
122 | static int sb1000_set_PIDs(const int ioaddr[], const char* name, | |
123 | const short PID[]); | |
124 | ||
125 | /* SB1000 commands for frame rx interrupt */ | |
a8d06342 DV |
126 | static int sb1000_rx(struct net_device *dev); |
127 | static void sb1000_error_dpc(struct net_device *dev); | |
1da177e4 LT |
128 | |
129 | static const struct pnp_device_id sb1000_pnp_ids[] = { | |
130 | { "GIC1000", 0 }, | |
131 | { "", 0 } | |
132 | }; | |
133 | MODULE_DEVICE_TABLE(pnp, sb1000_pnp_ids); | |
134 | ||
d49d19c9 SH |
135 | static const struct net_device_ops sb1000_netdev_ops = { |
136 | .ndo_open = sb1000_open, | |
137 | .ndo_start_xmit = sb1000_start_xmit, | |
138 | .ndo_do_ioctl = sb1000_dev_ioctl, | |
139 | .ndo_stop = sb1000_close, | |
d49d19c9 SH |
140 | .ndo_set_mac_address = eth_mac_addr, |
141 | .ndo_validate_addr = eth_validate_addr, | |
142 | }; | |
143 | ||
1da177e4 LT |
144 | static int |
145 | sb1000_probe_one(struct pnp_dev *pdev, const struct pnp_device_id *id) | |
146 | { | |
147 | struct net_device *dev; | |
148 | unsigned short ioaddr[2], irq; | |
149 | unsigned int serial_number; | |
150 | int error = -ENODEV; | |
6aa20a22 | 151 | |
1da177e4 LT |
152 | if (pnp_device_attach(pdev) < 0) |
153 | return -ENODEV; | |
154 | if (pnp_activate_dev(pdev) < 0) | |
155 | goto out_detach; | |
156 | ||
157 | if (!pnp_port_valid(pdev, 0) || !pnp_port_valid(pdev, 1)) | |
158 | goto out_disable; | |
159 | if (!pnp_irq_valid(pdev, 0)) | |
160 | goto out_disable; | |
6aa20a22 | 161 | |
1da177e4 | 162 | serial_number = pdev->card->serial; |
6aa20a22 | 163 | |
1da177e4 LT |
164 | ioaddr[0] = pnp_port_start(pdev, 0); |
165 | ioaddr[1] = pnp_port_start(pdev, 0); | |
6aa20a22 | 166 | |
1da177e4 LT |
167 | irq = pnp_irq(pdev, 0); |
168 | ||
169 | if (!request_region(ioaddr[0], 16, "sb1000")) | |
170 | goto out_disable; | |
171 | if (!request_region(ioaddr[1], 16, "sb1000")) | |
172 | goto out_release_region0; | |
173 | ||
174 | dev = alloc_etherdev(sizeof(struct sb1000_private)); | |
175 | if (!dev) { | |
176 | error = -ENOMEM; | |
177 | goto out_release_regions; | |
178 | } | |
179 | ||
6aa20a22 | 180 | |
1da177e4 LT |
181 | dev->base_addr = ioaddr[0]; |
182 | /* mem_start holds the second I/O address */ | |
183 | dev->mem_start = ioaddr[1]; | |
184 | dev->irq = irq; | |
185 | ||
186 | if (sb1000_debug > 0) | |
187 | printk(KERN_NOTICE "%s: sb1000 at (%#3.3lx,%#3.3lx), " | |
188 | "S/N %#8.8x, IRQ %d.\n", dev->name, dev->base_addr, | |
189 | dev->mem_start, serial_number, dev->irq); | |
190 | ||
191 | /* | |
192 | * The SB1000 is an rx-only cable modem device. The uplink is a modem | |
193 | * and we do not want to arp on it. | |
194 | */ | |
195 | dev->flags = IFF_POINTOPOINT|IFF_NOARP; | |
196 | ||
1da177e4 LT |
197 | SET_NETDEV_DEV(dev, &pdev->dev); |
198 | ||
199 | if (sb1000_debug > 0) | |
200 | printk(KERN_NOTICE "%s", version); | |
201 | ||
d49d19c9 | 202 | dev->netdev_ops = &sb1000_netdev_ops; |
1da177e4 LT |
203 | |
204 | /* hardware address is 0:0:serial_number */ | |
205 | dev->dev_addr[2] = serial_number >> 24 & 0xff; | |
206 | dev->dev_addr[3] = serial_number >> 16 & 0xff; | |
207 | dev->dev_addr[4] = serial_number >> 8 & 0xff; | |
208 | dev->dev_addr[5] = serial_number >> 0 & 0xff; | |
209 | ||
210 | pnp_set_drvdata(pdev, dev); | |
211 | ||
212 | error = register_netdev(dev); | |
213 | if (error) | |
214 | goto out_free_netdev; | |
215 | return 0; | |
216 | ||
217 | out_free_netdev: | |
218 | free_netdev(dev); | |
219 | out_release_regions: | |
220 | release_region(ioaddr[1], 16); | |
221 | out_release_region0: | |
222 | release_region(ioaddr[0], 16); | |
223 | out_disable: | |
224 | pnp_disable_dev(pdev); | |
225 | out_detach: | |
226 | pnp_device_detach(pdev); | |
227 | return error; | |
228 | } | |
229 | ||
230 | static void | |
231 | sb1000_remove_one(struct pnp_dev *pdev) | |
232 | { | |
233 | struct net_device *dev = pnp_get_drvdata(pdev); | |
234 | ||
235 | unregister_netdev(dev); | |
236 | release_region(dev->base_addr, 16); | |
237 | release_region(dev->mem_start, 16); | |
238 | free_netdev(dev); | |
239 | } | |
240 | ||
241 | static struct pnp_driver sb1000_driver = { | |
242 | .name = "sb1000", | |
243 | .id_table = sb1000_pnp_ids, | |
244 | .probe = sb1000_probe_one, | |
245 | .remove = sb1000_remove_one, | |
246 | }; | |
247 | ||
6aa20a22 | 248 | |
1da177e4 LT |
249 | /* |
250 | * SB1000 hardware routines to be used during open/configuration phases | |
251 | */ | |
252 | ||
253 | static const int TimeOutJiffies = (875 * HZ) / 100; | |
254 | ||
1da177e4 | 255 | /* Card Wait For Busy Clear (cannot be used during an interrupt) */ |
a8d06342 | 256 | static int |
1da177e4 LT |
257 | card_wait_for_busy_clear(const int ioaddr[], const char* name) |
258 | { | |
259 | unsigned char a; | |
260 | unsigned long timeout; | |
261 | ||
262 | a = inb(ioaddr[0] + 7); | |
263 | timeout = jiffies + TimeOutJiffies; | |
264 | while (a & 0x80 || a & 0x40) { | |
265 | /* a little sleep */ | |
266 | yield(); | |
267 | ||
268 | a = inb(ioaddr[0] + 7); | |
269 | if (time_after_eq(jiffies, timeout)) { | |
270 | printk(KERN_WARNING "%s: card_wait_for_busy_clear timeout\n", | |
271 | name); | |
272 | return -ETIME; | |
273 | } | |
274 | } | |
275 | ||
276 | return 0; | |
277 | } | |
278 | ||
279 | /* Card Wait For Ready (cannot be used during an interrupt) */ | |
a8d06342 | 280 | static int |
1da177e4 LT |
281 | card_wait_for_ready(const int ioaddr[], const char* name, unsigned char in[]) |
282 | { | |
283 | unsigned char a; | |
284 | unsigned long timeout; | |
285 | ||
286 | a = inb(ioaddr[1] + 6); | |
287 | timeout = jiffies + TimeOutJiffies; | |
288 | while (a & 0x80 || !(a & 0x40)) { | |
289 | /* a little sleep */ | |
290 | yield(); | |
291 | ||
292 | a = inb(ioaddr[1] + 6); | |
293 | if (time_after_eq(jiffies, timeout)) { | |
294 | printk(KERN_WARNING "%s: card_wait_for_ready timeout\n", | |
295 | name); | |
296 | return -ETIME; | |
297 | } | |
298 | } | |
299 | ||
300 | in[1] = inb(ioaddr[0] + 1); | |
301 | in[2] = inb(ioaddr[0] + 2); | |
302 | in[3] = inb(ioaddr[0] + 3); | |
303 | in[4] = inb(ioaddr[0] + 4); | |
304 | in[0] = inb(ioaddr[0] + 5); | |
305 | in[6] = inb(ioaddr[0] + 6); | |
306 | in[5] = inb(ioaddr[1] + 6); | |
307 | return 0; | |
308 | } | |
309 | ||
310 | /* Card Send Command (cannot be used during an interrupt) */ | |
858119e1 | 311 | static int |
1da177e4 LT |
312 | card_send_command(const int ioaddr[], const char* name, |
313 | const unsigned char out[], unsigned char in[]) | |
314 | { | |
ce6bf4c1 | 315 | int status; |
1da177e4 LT |
316 | |
317 | if ((status = card_wait_for_busy_clear(ioaddr, name))) | |
318 | return status; | |
319 | outb(0xa0, ioaddr[0] + 6); | |
320 | outb(out[2], ioaddr[0] + 1); | |
321 | outb(out[3], ioaddr[0] + 2); | |
322 | outb(out[4], ioaddr[0] + 3); | |
323 | outb(out[5], ioaddr[0] + 4); | |
324 | outb(out[1], ioaddr[0] + 5); | |
325 | outb(0xa0, ioaddr[0] + 6); | |
326 | outb(out[0], ioaddr[0] + 7); | |
327 | if (out[0] != 0x20 && out[0] != 0x30) { | |
328 | if ((status = card_wait_for_ready(ioaddr, name, in))) | |
329 | return status; | |
330 | inb(ioaddr[0] + 7); | |
331 | if (sb1000_debug > 3) | |
332 | printk(KERN_DEBUG "%s: card_send_command " | |
333 | "out: %02x%02x%02x%02x%02x%02x " | |
334 | "in: %02x%02x%02x%02x%02x%02x%02x\n", name, | |
335 | out[0], out[1], out[2], out[3], out[4], out[5], | |
336 | in[0], in[1], in[2], in[3], in[4], in[5], in[6]); | |
337 | } else { | |
338 | if (sb1000_debug > 3) | |
339 | printk(KERN_DEBUG "%s: card_send_command " | |
340 | "out: %02x%02x%02x%02x%02x%02x\n", name, | |
341 | out[0], out[1], out[2], out[3], out[4], out[5]); | |
342 | } | |
343 | ||
ce6bf4c1 | 344 | if (out[1] != 0x1b) { |
1da177e4 LT |
345 | if (out[0] >= 0x80 && in[0] != (out[1] | 0x80)) |
346 | return -EIO; | |
347 | } | |
348 | return 0; | |
349 | } | |
350 | ||
6aa20a22 | 351 | |
1da177e4 LT |
352 | /* |
353 | * SB1000 hardware routines to be used during frame rx interrupt | |
354 | */ | |
355 | static const int Sb1000TimeOutJiffies = 7 * HZ; | |
356 | ||
357 | /* Card Wait For Ready (to be used during frame rx) */ | |
a8d06342 | 358 | static int |
1da177e4 LT |
359 | sb1000_wait_for_ready(const int ioaddr[], const char* name) |
360 | { | |
361 | unsigned long timeout; | |
362 | ||
363 | timeout = jiffies + Sb1000TimeOutJiffies; | |
364 | while (inb(ioaddr[1] + 6) & 0x80) { | |
365 | if (time_after_eq(jiffies, timeout)) { | |
366 | printk(KERN_WARNING "%s: sb1000_wait_for_ready timeout\n", | |
367 | name); | |
368 | return -ETIME; | |
369 | } | |
370 | } | |
371 | timeout = jiffies + Sb1000TimeOutJiffies; | |
372 | while (!(inb(ioaddr[1] + 6) & 0x40)) { | |
373 | if (time_after_eq(jiffies, timeout)) { | |
374 | printk(KERN_WARNING "%s: sb1000_wait_for_ready timeout\n", | |
375 | name); | |
376 | return -ETIME; | |
377 | } | |
378 | } | |
379 | inb(ioaddr[0] + 7); | |
380 | return 0; | |
381 | } | |
382 | ||
383 | /* Card Wait For Ready Clear (to be used during frame rx) */ | |
a8d06342 | 384 | static int |
1da177e4 LT |
385 | sb1000_wait_for_ready_clear(const int ioaddr[], const char* name) |
386 | { | |
387 | unsigned long timeout; | |
388 | ||
389 | timeout = jiffies + Sb1000TimeOutJiffies; | |
390 | while (inb(ioaddr[1] + 6) & 0x80) { | |
391 | if (time_after_eq(jiffies, timeout)) { | |
392 | printk(KERN_WARNING "%s: sb1000_wait_for_ready_clear timeout\n", | |
393 | name); | |
394 | return -ETIME; | |
395 | } | |
396 | } | |
397 | timeout = jiffies + Sb1000TimeOutJiffies; | |
398 | while (inb(ioaddr[1] + 6) & 0x40) { | |
399 | if (time_after_eq(jiffies, timeout)) { | |
400 | printk(KERN_WARNING "%s: sb1000_wait_for_ready_clear timeout\n", | |
401 | name); | |
402 | return -ETIME; | |
403 | } | |
404 | } | |
405 | return 0; | |
406 | } | |
407 | ||
408 | /* Card Send Command (to be used during frame rx) */ | |
a8d06342 | 409 | static void |
1da177e4 LT |
410 | sb1000_send_command(const int ioaddr[], const char* name, |
411 | const unsigned char out[]) | |
412 | { | |
413 | outb(out[2], ioaddr[0] + 1); | |
414 | outb(out[3], ioaddr[0] + 2); | |
415 | outb(out[4], ioaddr[0] + 3); | |
416 | outb(out[5], ioaddr[0] + 4); | |
417 | outb(out[1], ioaddr[0] + 5); | |
418 | outb(out[0], ioaddr[0] + 7); | |
419 | if (sb1000_debug > 3) | |
420 | printk(KERN_DEBUG "%s: sb1000_send_command out: %02x%02x%02x%02x" | |
421 | "%02x%02x\n", name, out[0], out[1], out[2], out[3], out[4], out[5]); | |
1da177e4 LT |
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); | |
1da177e4 LT |
433 | } |
434 | ||
435 | /* Issue Read Command (to be used during frame rx) */ | |
a8d06342 | 436 | static void |
1da177e4 LT |
437 | sb1000_issue_read_command(const int ioaddr[], const char* name) |
438 | { | |
7dd73bbc | 439 | static const unsigned char Command0[6] = {0x20, 0x00, 0x00, 0x01, 0x00, 0x00}; |
1da177e4 LT |
440 | |
441 | sb1000_wait_for_ready_clear(ioaddr, name); | |
442 | outb(0xa0, ioaddr[0] + 6); | |
443 | sb1000_send_command(ioaddr, name, Command0); | |
1da177e4 LT |
444 | } |
445 | ||
6aa20a22 | 446 | |
1da177e4 LT |
447 | /* |
448 | * SB1000 commands for open/configuration | |
449 | */ | |
450 | /* reset SB1000 card */ | |
a8d06342 | 451 | static int |
1da177e4 LT |
452 | sb1000_reset(const int ioaddr[], const char* name) |
453 | { | |
7dd73bbc DV |
454 | static const unsigned char Command0[6] = {0x80, 0x16, 0x00, 0x00, 0x00, 0x00}; |
455 | ||
1da177e4 LT |
456 | unsigned char st[7]; |
457 | int port, status; | |
1da177e4 LT |
458 | |
459 | port = ioaddr[1] + 6; | |
460 | outb(0x4, port); | |
461 | inb(port); | |
462 | udelay(1000); | |
463 | outb(0x0, port); | |
464 | inb(port); | |
a26c074c | 465 | ssleep(1); |
1da177e4 LT |
466 | outb(0x4, port); |
467 | inb(port); | |
468 | udelay(1000); | |
469 | outb(0x0, port); | |
470 | inb(port); | |
471 | udelay(0); | |
472 | ||
473 | if ((status = card_send_command(ioaddr, name, Command0, st))) | |
474 | return status; | |
475 | if (st[3] != 0xf0) | |
476 | return -EIO; | |
477 | return 0; | |
478 | } | |
479 | ||
480 | /* check SB1000 firmware CRC */ | |
a8d06342 | 481 | static int |
1da177e4 LT |
482 | sb1000_check_CRC(const int ioaddr[], const char* name) |
483 | { | |
7dd73bbc DV |
484 | static const unsigned char Command0[6] = {0x80, 0x1f, 0x00, 0x00, 0x00, 0x00}; |
485 | ||
1da177e4 | 486 | unsigned char st[7]; |
ce6bf4c1 | 487 | int status; |
1da177e4 LT |
488 | |
489 | /* check CRC */ | |
490 | if ((status = card_send_command(ioaddr, name, Command0, st))) | |
491 | return status; | |
492 | if (st[1] != st[3] || st[2] != st[4]) | |
493 | return -EIO; | |
1da177e4 LT |
494 | return 0; |
495 | } | |
496 | ||
497 | static inline int | |
498 | sb1000_start_get_set_command(const int ioaddr[], const char* name) | |
499 | { | |
7dd73bbc DV |
500 | static const unsigned char Command0[6] = {0x80, 0x1b, 0x00, 0x00, 0x00, 0x00}; |
501 | ||
1da177e4 | 502 | unsigned char st[7]; |
1da177e4 LT |
503 | |
504 | return card_send_command(ioaddr, name, Command0, st); | |
505 | } | |
506 | ||
a8d06342 | 507 | static int |
1da177e4 LT |
508 | sb1000_end_get_set_command(const int ioaddr[], const char* name) |
509 | { | |
7dd73bbc DV |
510 | static const unsigned char Command0[6] = {0x80, 0x1b, 0x02, 0x00, 0x00, 0x00}; |
511 | static const unsigned char Command1[6] = {0x20, 0x00, 0x00, 0x00, 0x00, 0x00}; | |
512 | ||
1da177e4 LT |
513 | unsigned char st[7]; |
514 | int status; | |
1da177e4 LT |
515 | |
516 | if ((status = card_send_command(ioaddr, name, Command0, st))) | |
517 | return status; | |
518 | return card_send_command(ioaddr, name, Command1, st); | |
519 | } | |
520 | ||
a8d06342 | 521 | static int |
1da177e4 LT |
522 | sb1000_activate(const int ioaddr[], const char* name) |
523 | { | |
7dd73bbc DV |
524 | static const unsigned char Command0[6] = {0x80, 0x11, 0x00, 0x00, 0x00, 0x00}; |
525 | static const unsigned char Command1[6] = {0x80, 0x16, 0x00, 0x00, 0x00, 0x00}; | |
526 | ||
1da177e4 LT |
527 | unsigned char st[7]; |
528 | int status; | |
1da177e4 | 529 | |
a26c074c | 530 | ssleep(1); |
6394d98d CIK |
531 | status = card_send_command(ioaddr, name, Command0, st); |
532 | if (status) | |
1da177e4 | 533 | return status; |
6394d98d CIK |
534 | status = card_send_command(ioaddr, name, Command1, st); |
535 | if (status) | |
1da177e4 LT |
536 | return status; |
537 | if (st[3] != 0xf1) { | |
6394d98d CIK |
538 | status = sb1000_start_get_set_command(ioaddr, name); |
539 | if (status) | |
1da177e4 LT |
540 | return status; |
541 | return -EIO; | |
542 | } | |
543 | udelay(1000); | |
6394d98d | 544 | return sb1000_start_get_set_command(ioaddr, name); |
1da177e4 LT |
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 | } | |
1da177e4 LT |
728 | } |
729 | ||
730 | /* | |
731 | * SB1000 commands for frame rx interrupt | |
732 | */ | |
733 | /* receive a single frame and assemble datagram | |
734 | * (this is the heart of the interrupt routine) | |
735 | */ | |
a8d06342 | 736 | static int |
1da177e4 LT |
737 | sb1000_rx(struct net_device *dev) |
738 | { | |
739 | ||
740 | #define FRAMESIZE 184 | |
741 | unsigned char st[2], buffer[FRAMESIZE], session_id, frame_id; | |
742 | short dlen; | |
743 | int ioaddr, ns; | |
744 | unsigned int skbsize; | |
745 | struct sk_buff *skb; | |
746 | struct sb1000_private *lp = netdev_priv(dev); | |
09f75cd7 | 747 | struct net_device_stats *stats = &dev->stats; |
1da177e4 LT |
748 | |
749 | /* SB1000 frame constants */ | |
750 | const int FrameSize = FRAMESIZE; | |
751 | const int NewDatagramHeaderSkip = 8; | |
752 | const int NewDatagramHeaderSize = NewDatagramHeaderSkip + 18; | |
753 | const int NewDatagramDataSize = FrameSize - NewDatagramHeaderSize; | |
754 | const int ContDatagramHeaderSkip = 7; | |
755 | const int ContDatagramHeaderSize = ContDatagramHeaderSkip + 1; | |
756 | const int ContDatagramDataSize = FrameSize - ContDatagramHeaderSize; | |
757 | const int TrailerSize = 4; | |
758 | ||
759 | ioaddr = dev->base_addr; | |
760 | ||
761 | insw(ioaddr, (unsigned short*) st, 1); | |
762 | #ifdef XXXDEBUG | |
763 | printk("cm0: received: %02x %02x\n", st[0], st[1]); | |
764 | #endif /* XXXDEBUG */ | |
765 | lp->rx_frames++; | |
766 | ||
767 | /* decide if it is a good or bad frame */ | |
768 | for (ns = 0; ns < NPIDS; ns++) { | |
769 | session_id = lp->rx_session_id[ns]; | |
770 | frame_id = lp->rx_frame_id[ns]; | |
771 | if (st[0] == session_id) { | |
772 | if (st[1] == frame_id || (!frame_id && (st[1] & 0xf0) == 0x30)) { | |
773 | goto good_frame; | |
774 | } else if ((st[1] & 0xf0) == 0x30 && (st[0] & 0x40)) { | |
775 | goto skipped_frame; | |
776 | } else { | |
777 | goto bad_frame; | |
778 | } | |
779 | } else if (st[0] == (session_id | 0x40)) { | |
780 | if ((st[1] & 0xf0) == 0x30) { | |
781 | goto skipped_frame; | |
782 | } else { | |
783 | goto bad_frame; | |
784 | } | |
785 | } | |
786 | } | |
787 | goto bad_frame; | |
788 | ||
789 | skipped_frame: | |
790 | stats->rx_frame_errors++; | |
791 | skb = lp->rx_skb[ns]; | |
792 | if (sb1000_debug > 1) | |
793 | printk(KERN_WARNING "%s: missing frame(s): got %02x %02x " | |
794 | "expecting %02x %02x\n", dev->name, st[0], st[1], | |
795 | skb ? session_id : session_id | 0x40, frame_id); | |
796 | if (skb) { | |
797 | dev_kfree_skb(skb); | |
798 | skb = NULL; | |
799 | } | |
800 | ||
801 | good_frame: | |
802 | lp->rx_frame_id[ns] = 0x30 | ((st[1] + 1) & 0x0f); | |
803 | /* new datagram */ | |
804 | if (st[0] & 0x40) { | |
805 | /* get data length */ | |
806 | insw(ioaddr, buffer, NewDatagramHeaderSize / 2); | |
807 | #ifdef XXXDEBUG | |
808 | printk("cm0: IP identification: %02x%02x fragment offset: %02x%02x\n", buffer[30], buffer[31], buffer[32], buffer[33]); | |
809 | #endif /* XXXDEBUG */ | |
810 | if (buffer[0] != NewDatagramHeaderSkip) { | |
811 | if (sb1000_debug > 1) | |
812 | printk(KERN_WARNING "%s: new datagram header skip error: " | |
813 | "got %02x expecting %02x\n", dev->name, buffer[0], | |
814 | NewDatagramHeaderSkip); | |
815 | stats->rx_length_errors++; | |
816 | insw(ioaddr, buffer, NewDatagramDataSize / 2); | |
817 | goto bad_frame_next; | |
818 | } | |
819 | dlen = ((buffer[NewDatagramHeaderSkip + 3] & 0x0f) << 8 | | |
820 | buffer[NewDatagramHeaderSkip + 4]) - 17; | |
821 | if (dlen > SB1000_MRU) { | |
822 | if (sb1000_debug > 1) | |
823 | printk(KERN_WARNING "%s: datagram length (%d) greater " | |
824 | "than MRU (%d)\n", dev->name, dlen, SB1000_MRU); | |
825 | stats->rx_length_errors++; | |
826 | insw(ioaddr, buffer, NewDatagramDataSize / 2); | |
827 | goto bad_frame_next; | |
828 | } | |
829 | lp->rx_dlen[ns] = dlen; | |
830 | /* compute size to allocate for datagram */ | |
831 | skbsize = dlen + FrameSize; | |
832 | if ((skb = alloc_skb(skbsize, GFP_ATOMIC)) == NULL) { | |
833 | if (sb1000_debug > 1) | |
834 | printk(KERN_WARNING "%s: can't allocate %d bytes long " | |
835 | "skbuff\n", dev->name, skbsize); | |
836 | stats->rx_dropped++; | |
837 | insw(ioaddr, buffer, NewDatagramDataSize / 2); | |
838 | goto dropped_frame; | |
839 | } | |
840 | skb->dev = dev; | |
459a98ed | 841 | skb_reset_mac_header(skb); |
1da177e4 LT |
842 | skb->protocol = (unsigned short) buffer[NewDatagramHeaderSkip + 16]; |
843 | insw(ioaddr, skb_put(skb, NewDatagramDataSize), | |
844 | NewDatagramDataSize / 2); | |
845 | lp->rx_skb[ns] = skb; | |
846 | } else { | |
847 | /* continuation of previous datagram */ | |
848 | insw(ioaddr, buffer, ContDatagramHeaderSize / 2); | |
849 | if (buffer[0] != ContDatagramHeaderSkip) { | |
850 | if (sb1000_debug > 1) | |
851 | printk(KERN_WARNING "%s: cont datagram header skip error: " | |
852 | "got %02x expecting %02x\n", dev->name, buffer[0], | |
853 | ContDatagramHeaderSkip); | |
854 | stats->rx_length_errors++; | |
855 | insw(ioaddr, buffer, ContDatagramDataSize / 2); | |
856 | goto bad_frame_next; | |
857 | } | |
858 | skb = lp->rx_skb[ns]; | |
859 | insw(ioaddr, skb_put(skb, ContDatagramDataSize), | |
860 | ContDatagramDataSize / 2); | |
861 | dlen = lp->rx_dlen[ns]; | |
862 | } | |
863 | if (skb->len < dlen + TrailerSize) { | |
864 | lp->rx_session_id[ns] &= ~0x40; | |
865 | return 0; | |
866 | } | |
867 | ||
868 | /* datagram completed: send to upper level */ | |
869 | skb_trim(skb, dlen); | |
870 | netif_rx(skb); | |
1da177e4 LT |
871 | stats->rx_bytes+=dlen; |
872 | stats->rx_packets++; | |
873 | lp->rx_skb[ns] = NULL; | |
874 | lp->rx_session_id[ns] |= 0x40; | |
875 | return 0; | |
876 | ||
877 | bad_frame: | |
878 | insw(ioaddr, buffer, FrameSize / 2); | |
879 | if (sb1000_debug > 1) | |
880 | printk(KERN_WARNING "%s: frame error: got %02x %02x\n", | |
881 | dev->name, st[0], st[1]); | |
882 | stats->rx_frame_errors++; | |
883 | bad_frame_next: | |
884 | if (sb1000_debug > 2) | |
885 | sb1000_print_status_buffer(dev->name, st, buffer, FrameSize); | |
886 | dropped_frame: | |
887 | stats->rx_errors++; | |
888 | if (ns < NPIDS) { | |
889 | if ((skb = lp->rx_skb[ns])) { | |
890 | dev_kfree_skb(skb); | |
891 | lp->rx_skb[ns] = NULL; | |
892 | } | |
893 | lp->rx_session_id[ns] |= 0x40; | |
894 | } | |
895 | return -1; | |
896 | } | |
897 | ||
a8d06342 | 898 | static void |
1da177e4 LT |
899 | sb1000_error_dpc(struct net_device *dev) |
900 | { | |
7dd73bbc DV |
901 | static const unsigned char Command0[6] = {0x80, 0x26, 0x00, 0x00, 0x00, 0x00}; |
902 | ||
1da177e4 LT |
903 | char *name; |
904 | unsigned char st[5]; | |
905 | int ioaddr[2]; | |
906 | struct sb1000_private *lp = netdev_priv(dev); | |
1da177e4 LT |
907 | const int ErrorDpcCounterInitialize = 200; |
908 | ||
909 | ioaddr[0] = dev->base_addr; | |
910 | /* mem_start holds the second I/O address */ | |
911 | ioaddr[1] = dev->mem_start; | |
912 | name = dev->name; | |
913 | ||
914 | sb1000_wait_for_ready_clear(ioaddr, name); | |
915 | sb1000_send_command(ioaddr, name, Command0); | |
916 | sb1000_wait_for_ready(ioaddr, name); | |
917 | sb1000_read_status(ioaddr, st); | |
918 | if (st[1] & 0x10) | |
919 | lp->rx_error_dpc_count = ErrorDpcCounterInitialize; | |
1da177e4 LT |
920 | } |
921 | ||
6aa20a22 | 922 | |
1da177e4 LT |
923 | /* |
924 | * Linux interface functions | |
925 | */ | |
926 | static int | |
927 | sb1000_open(struct net_device *dev) | |
928 | { | |
929 | char *name; | |
930 | int ioaddr[2], status; | |
931 | struct sb1000_private *lp = netdev_priv(dev); | |
932 | const unsigned short FirmwareVersion[] = {0x01, 0x01}; | |
933 | ||
934 | ioaddr[0] = dev->base_addr; | |
935 | /* mem_start holds the second I/O address */ | |
936 | ioaddr[1] = dev->mem_start; | |
937 | name = dev->name; | |
938 | ||
939 | /* initialize sb1000 */ | |
940 | if ((status = sb1000_reset(ioaddr, name))) | |
941 | return status; | |
a26c074c | 942 | ssleep(1); |
1da177e4 LT |
943 | if ((status = sb1000_check_CRC(ioaddr, name))) |
944 | return status; | |
945 | ||
946 | /* initialize private data before board can catch interrupts */ | |
947 | lp->rx_skb[0] = NULL; | |
948 | lp->rx_skb[1] = NULL; | |
949 | lp->rx_skb[2] = NULL; | |
950 | lp->rx_skb[3] = NULL; | |
951 | lp->rx_dlen[0] = 0; | |
952 | lp->rx_dlen[1] = 0; | |
953 | lp->rx_dlen[2] = 0; | |
954 | lp->rx_dlen[3] = 0; | |
955 | lp->rx_frames = 0; | |
956 | lp->rx_error_count = 0; | |
957 | lp->rx_error_dpc_count = 0; | |
958 | lp->rx_session_id[0] = 0x50; | |
d58c0e95 JL |
959 | lp->rx_session_id[1] = 0x48; |
960 | lp->rx_session_id[2] = 0x44; | |
961 | lp->rx_session_id[3] = 0x42; | |
1da177e4 LT |
962 | lp->rx_frame_id[0] = 0; |
963 | lp->rx_frame_id[1] = 0; | |
964 | lp->rx_frame_id[2] = 0; | |
965 | lp->rx_frame_id[3] = 0; | |
a0607fd3 | 966 | if (request_irq(dev->irq, sb1000_interrupt, 0, "sb1000", dev)) { |
1da177e4 LT |
967 | return -EAGAIN; |
968 | } | |
969 | ||
970 | if (sb1000_debug > 2) | |
971 | printk(KERN_DEBUG "%s: Opening, IRQ %d\n", name, dev->irq); | |
972 | ||
973 | /* Activate board and check firmware version */ | |
974 | udelay(1000); | |
975 | if ((status = sb1000_activate(ioaddr, name))) | |
976 | return status; | |
977 | udelay(0); | |
978 | if ((status = sb1000_get_firmware_version(ioaddr, name, version, 0))) | |
979 | return status; | |
980 | if (version[0] != FirmwareVersion[0] || version[1] != FirmwareVersion[1]) | |
981 | printk(KERN_WARNING "%s: found firmware version %x.%02x " | |
982 | "(should be %x.%02x)\n", name, version[0], version[1], | |
983 | FirmwareVersion[0], FirmwareVersion[1]); | |
984 | ||
985 | ||
986 | netif_start_queue(dev); | |
987 | return 0; /* Always succeed */ | |
988 | } | |
989 | ||
990 | static int sb1000_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) | |
991 | { | |
992 | char* name; | |
993 | unsigned char version[2]; | |
994 | short PID[4]; | |
995 | int ioaddr[2], status, frequency; | |
996 | unsigned int stats[5]; | |
997 | struct sb1000_private *lp = netdev_priv(dev); | |
998 | ||
999 | if (!(dev && dev->flags & IFF_UP)) | |
1000 | return -ENODEV; | |
1001 | ||
1002 | ioaddr[0] = dev->base_addr; | |
1003 | /* mem_start holds the second I/O address */ | |
1004 | ioaddr[1] = dev->mem_start; | |
1005 | name = dev->name; | |
1006 | ||
1007 | switch (cmd) { | |
1008 | case SIOCGCMSTATS: /* get statistics */ | |
09f75cd7 | 1009 | stats[0] = dev->stats.rx_bytes; |
1da177e4 | 1010 | stats[1] = lp->rx_frames; |
09f75cd7 JG |
1011 | stats[2] = dev->stats.rx_packets; |
1012 | stats[3] = dev->stats.rx_errors; | |
1013 | stats[4] = dev->stats.rx_dropped; | |
1da177e4 LT |
1014 | if(copy_to_user(ifr->ifr_data, stats, sizeof(stats))) |
1015 | return -EFAULT; | |
1016 | status = 0; | |
1017 | break; | |
1018 | ||
1019 | case SIOCGCMFIRMWARE: /* get firmware version */ | |
1020 | if ((status = sb1000_get_firmware_version(ioaddr, name, version, 1))) | |
1021 | return status; | |
1022 | if(copy_to_user(ifr->ifr_data, version, sizeof(version))) | |
1023 | return -EFAULT; | |
1024 | break; | |
1025 | ||
1026 | case SIOCGCMFREQUENCY: /* get frequency */ | |
1027 | if ((status = sb1000_get_frequency(ioaddr, name, &frequency))) | |
1028 | return status; | |
1029 | if(put_user(frequency, (int __user *) ifr->ifr_data)) | |
1030 | return -EFAULT; | |
1031 | break; | |
1032 | ||
1033 | case SIOCSCMFREQUENCY: /* set frequency */ | |
1034 | if (!capable(CAP_NET_ADMIN)) | |
1035 | return -EPERM; | |
1036 | if(get_user(frequency, (int __user *) ifr->ifr_data)) | |
1037 | return -EFAULT; | |
1038 | if ((status = sb1000_set_frequency(ioaddr, name, frequency))) | |
1039 | return status; | |
1040 | break; | |
1041 | ||
1042 | case SIOCGCMPIDS: /* get PIDs */ | |
1043 | if ((status = sb1000_get_PIDs(ioaddr, name, PID))) | |
1044 | return status; | |
1045 | if(copy_to_user(ifr->ifr_data, PID, sizeof(PID))) | |
1046 | return -EFAULT; | |
1047 | break; | |
1048 | ||
1049 | case SIOCSCMPIDS: /* set PIDs */ | |
1050 | if (!capable(CAP_NET_ADMIN)) | |
1051 | return -EPERM; | |
1052 | if(copy_from_user(PID, ifr->ifr_data, sizeof(PID))) | |
1053 | return -EFAULT; | |
1054 | if ((status = sb1000_set_PIDs(ioaddr, name, PID))) | |
1055 | return status; | |
1056 | /* set session_id, frame_id and pkt_type too */ | |
1057 | lp->rx_session_id[0] = 0x50 | (PID[0] & 0x0f); | |
1058 | lp->rx_session_id[1] = 0x48; | |
1059 | lp->rx_session_id[2] = 0x44; | |
1060 | lp->rx_session_id[3] = 0x42; | |
1061 | lp->rx_frame_id[0] = 0; | |
1062 | lp->rx_frame_id[1] = 0; | |
1063 | lp->rx_frame_id[2] = 0; | |
1064 | lp->rx_frame_id[3] = 0; | |
1065 | break; | |
1066 | ||
1067 | default: | |
1068 | status = -EINVAL; | |
1069 | break; | |
1070 | } | |
1071 | return status; | |
1072 | } | |
1073 | ||
1074 | /* transmit function: do nothing since SB1000 can't send anything out */ | |
61357325 | 1075 | static netdev_tx_t |
1da177e4 LT |
1076 | sb1000_start_xmit(struct sk_buff *skb, struct net_device *dev) |
1077 | { | |
1078 | printk(KERN_WARNING "%s: trying to transmit!!!\n", dev->name); | |
1079 | /* sb1000 can't xmit datagrams */ | |
1080 | dev_kfree_skb(skb); | |
6ed10654 | 1081 | return NETDEV_TX_OK; |
1da177e4 LT |
1082 | } |
1083 | ||
1084 | /* SB1000 interrupt handler. */ | |
7d12e780 | 1085 | static irqreturn_t sb1000_interrupt(int irq, void *dev_id) |
1da177e4 | 1086 | { |
7dd73bbc DV |
1087 | static const unsigned char Command0[6] = {0x80, 0x2c, 0x00, 0x00, 0x00, 0x00}; |
1088 | static const unsigned char Command1[6] = {0x80, 0x2e, 0x00, 0x00, 0x00, 0x00}; | |
1089 | ||
1da177e4 LT |
1090 | char *name; |
1091 | unsigned char st; | |
1092 | int ioaddr[2]; | |
c31f28e7 | 1093 | struct net_device *dev = dev_id; |
1da177e4 LT |
1094 | struct sb1000_private *lp = netdev_priv(dev); |
1095 | ||
1da177e4 LT |
1096 | const int MaxRxErrorCount = 6; |
1097 | ||
1da177e4 LT |
1098 | ioaddr[0] = dev->base_addr; |
1099 | /* mem_start holds the second I/O address */ | |
1100 | ioaddr[1] = dev->mem_start; | |
1101 | name = dev->name; | |
1102 | ||
1103 | /* is it a good interrupt? */ | |
1104 | st = inb(ioaddr[1] + 6); | |
1105 | if (!(st & 0x08 && st & 0x20)) { | |
1106 | return IRQ_NONE; | |
1107 | } | |
1108 | ||
1109 | if (sb1000_debug > 3) | |
1110 | printk(KERN_DEBUG "%s: entering interrupt\n", dev->name); | |
1111 | ||
1112 | st = inb(ioaddr[0] + 7); | |
1113 | if (sb1000_rx(dev)) | |
1114 | lp->rx_error_count++; | |
1115 | #ifdef SB1000_DELAY | |
1116 | udelay(SB1000_DELAY); | |
1117 | #endif /* SB1000_DELAY */ | |
1118 | sb1000_issue_read_command(ioaddr, name); | |
1119 | if (st & 0x01) { | |
1120 | sb1000_error_dpc(dev); | |
1121 | sb1000_issue_read_command(ioaddr, name); | |
1122 | } | |
1123 | if (lp->rx_error_dpc_count && !(--lp->rx_error_dpc_count)) { | |
1124 | sb1000_wait_for_ready_clear(ioaddr, name); | |
1125 | sb1000_send_command(ioaddr, name, Command0); | |
1126 | sb1000_wait_for_ready(ioaddr, name); | |
1127 | sb1000_issue_read_command(ioaddr, name); | |
1128 | } | |
1129 | if (lp->rx_error_count >= MaxRxErrorCount) { | |
1130 | sb1000_wait_for_ready_clear(ioaddr, name); | |
1131 | sb1000_send_command(ioaddr, name, Command1); | |
1132 | sb1000_wait_for_ready(ioaddr, name); | |
1133 | sb1000_issue_read_command(ioaddr, name); | |
1134 | lp->rx_error_count = 0; | |
1135 | } | |
1136 | ||
1137 | return IRQ_HANDLED; | |
1138 | } | |
1139 | ||
1da177e4 LT |
1140 | static int sb1000_close(struct net_device *dev) |
1141 | { | |
1142 | int i; | |
1143 | int ioaddr[2]; | |
1144 | struct sb1000_private *lp = netdev_priv(dev); | |
1145 | ||
1146 | if (sb1000_debug > 2) | |
1147 | printk(KERN_DEBUG "%s: Shutting down sb1000.\n", dev->name); | |
1148 | ||
1149 | netif_stop_queue(dev); | |
6aa20a22 | 1150 | |
1da177e4 LT |
1151 | ioaddr[0] = dev->base_addr; |
1152 | /* mem_start holds the second I/O address */ | |
1153 | ioaddr[1] = dev->mem_start; | |
1154 | ||
1155 | free_irq(dev->irq, dev); | |
1156 | /* If we don't do this, we can't re-insmod it later. */ | |
1157 | release_region(ioaddr[1], SB1000_IO_EXTENT); | |
1158 | release_region(ioaddr[0], SB1000_IO_EXTENT); | |
1159 | ||
1160 | /* free rx_skb's if needed */ | |
1161 | for (i=0; i<4; i++) { | |
1162 | if (lp->rx_skb[i]) { | |
1163 | dev_kfree_skb(lp->rx_skb[i]); | |
1164 | } | |
1165 | } | |
1166 | return 0; | |
1167 | } | |
1168 | ||
1169 | MODULE_AUTHOR("Franco Venturi <fventuri@mediaone.net>"); | |
1170 | MODULE_DESCRIPTION("General Instruments SB1000 driver"); | |
1171 | MODULE_LICENSE("GPL"); | |
1172 | ||
ed03538a | 1173 | module_pnp_driver(sb1000_driver); |