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); | |
cc0aa831 AB |
81 | static int sb1000_siocdevprivate(struct net_device *dev, struct ifreq *ifr, |
82 | void __user *data, int cmd); | |
61357325 SH |
83 | static netdev_tx_t sb1000_start_xmit(struct sk_buff *skb, |
84 | struct net_device *dev); | |
7d12e780 | 85 | static irqreturn_t sb1000_interrupt(int irq, void *dev_id); |
1da177e4 LT |
86 | static int sb1000_close(struct net_device *dev); |
87 | ||
88 | ||
89 | /* SB1000 hardware routines to be used during open/configuration phases */ | |
a8d06342 | 90 | static int card_wait_for_busy_clear(const int ioaddr[], |
1da177e4 | 91 | const char* name); |
a8d06342 | 92 | static int card_wait_for_ready(const int ioaddr[], const char* name, |
1da177e4 | 93 | unsigned char in[]); |
858119e1 | 94 | static int card_send_command(const int ioaddr[], const char* name, |
1da177e4 LT |
95 | const unsigned char out[], unsigned char in[]); |
96 | ||
97 | /* SB1000 hardware routines to be used during frame rx interrupt */ | |
a8d06342 DV |
98 | static int sb1000_wait_for_ready(const int ioaddr[], const char* name); |
99 | static int sb1000_wait_for_ready_clear(const int ioaddr[], | |
1da177e4 | 100 | const char* name); |
a8d06342 | 101 | static void sb1000_send_command(const int ioaddr[], const char* name, |
1da177e4 | 102 | const unsigned char out[]); |
a8d06342 DV |
103 | static void sb1000_read_status(const int ioaddr[], unsigned char in[]); |
104 | static void sb1000_issue_read_command(const int ioaddr[], | |
1da177e4 LT |
105 | const char* name); |
106 | ||
107 | /* SB1000 commands for open/configuration */ | |
a8d06342 DV |
108 | static int sb1000_reset(const int ioaddr[], const char* name); |
109 | static int sb1000_check_CRC(const int ioaddr[], const char* name); | |
1da177e4 LT |
110 | static inline int sb1000_start_get_set_command(const int ioaddr[], |
111 | const char* name); | |
a8d06342 | 112 | static int sb1000_end_get_set_command(const int ioaddr[], |
1da177e4 | 113 | const char* name); |
a8d06342 | 114 | static int sb1000_activate(const int ioaddr[], const char* name); |
1da177e4 LT |
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 */ | |
a8d06342 DV |
127 | static int sb1000_rx(struct net_device *dev); |
128 | static void sb1000_error_dpc(struct net_device *dev); | |
1da177e4 LT |
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 | ||
d49d19c9 SH |
136 | static const struct net_device_ops sb1000_netdev_ops = { |
137 | .ndo_open = sb1000_open, | |
138 | .ndo_start_xmit = sb1000_start_xmit, | |
cc0aa831 | 139 | .ndo_siocdevprivate = sb1000_siocdevprivate, |
d49d19c9 | 140 | .ndo_stop = sb1000_close, |
d49d19c9 SH |
141 | .ndo_set_mac_address = eth_mac_addr, |
142 | .ndo_validate_addr = eth_validate_addr, | |
143 | }; | |
144 | ||
1da177e4 LT |
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; | |
5f07da89 | 152 | u8 addr[ETH_ALEN]; |
6aa20a22 | 153 | |
1da177e4 LT |
154 | if (pnp_device_attach(pdev) < 0) |
155 | return -ENODEV; | |
156 | if (pnp_activate_dev(pdev) < 0) | |
157 | goto out_detach; | |
158 | ||
159 | if (!pnp_port_valid(pdev, 0) || !pnp_port_valid(pdev, 1)) | |
160 | goto out_disable; | |
161 | if (!pnp_irq_valid(pdev, 0)) | |
162 | goto out_disable; | |
6aa20a22 | 163 | |
1da177e4 | 164 | serial_number = pdev->card->serial; |
6aa20a22 | 165 | |
1da177e4 LT |
166 | ioaddr[0] = pnp_port_start(pdev, 0); |
167 | ioaddr[1] = pnp_port_start(pdev, 0); | |
6aa20a22 | 168 | |
1da177e4 LT |
169 | irq = pnp_irq(pdev, 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 | ||
6aa20a22 | 182 | |
1da177e4 LT |
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 | ||
1da177e4 LT |
199 | SET_NETDEV_DEV(dev, &pdev->dev); |
200 | ||
201 | if (sb1000_debug > 0) | |
202 | printk(KERN_NOTICE "%s", version); | |
203 | ||
d49d19c9 | 204 | dev->netdev_ops = &sb1000_netdev_ops; |
1da177e4 LT |
205 | |
206 | /* hardware address is 0:0:serial_number */ | |
5f07da89 JK |
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); | |
1da177e4 LT |
214 | |
215 | pnp_set_drvdata(pdev, 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(pdev); | |
230 | out_detach: | |
231 | pnp_device_detach(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 | ||
6aa20a22 | 253 | |
1da177e4 LT |
254 | /* |
255 | * SB1000 hardware routines to be used during open/configuration phases | |
256 | */ | |
257 | ||
258 | static const int TimeOutJiffies = (875 * HZ) / 100; | |
259 | ||
1da177e4 | 260 | /* Card Wait For Busy Clear (cannot be used during an interrupt) */ |
a8d06342 | 261 | static int |
1da177e4 LT |
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(ioaddr[0] + 7); | |
268 | timeout = jiffies + TimeOutJiffies; | |
269 | while (a & 0x80 || a & 0x40) { | |
270 | /* a little sleep */ | |
271 | yield(); | |
272 | ||
273 | a = inb(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) */ | |
a8d06342 | 285 | static int |
1da177e4 LT |
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(ioaddr[1] + 6); | |
292 | timeout = jiffies + TimeOutJiffies; | |
293 | while (a & 0x80 || !(a & 0x40)) { | |
294 | /* a little sleep */ | |
295 | yield(); | |
296 | ||
297 | a = inb(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(ioaddr[0] + 1); | |
306 | in[2] = inb(ioaddr[0] + 2); | |
307 | in[3] = inb(ioaddr[0] + 3); | |
308 | in[4] = inb(ioaddr[0] + 4); | |
309 | in[0] = inb(ioaddr[0] + 5); | |
310 | in[6] = inb(ioaddr[0] + 6); | |
311 | in[5] = inb(ioaddr[1] + 6); | |
312 | return 0; | |
313 | } | |
314 | ||
315 | /* Card Send Command (cannot be used during an interrupt) */ | |
858119e1 | 316 | static int |
1da177e4 LT |
317 | card_send_command(const int ioaddr[], const char* name, |
318 | const unsigned char out[], unsigned char in[]) | |
319 | { | |
ce6bf4c1 | 320 | int status; |
1da177e4 LT |
321 | |
322 | if ((status = card_wait_for_busy_clear(ioaddr, name))) | |
323 | return status; | |
324 | outb(0xa0, ioaddr[0] + 6); | |
325 | outb(out[2], ioaddr[0] + 1); | |
326 | outb(out[3], ioaddr[0] + 2); | |
327 | outb(out[4], ioaddr[0] + 3); | |
328 | outb(out[5], ioaddr[0] + 4); | |
329 | outb(out[1], ioaddr[0] + 5); | |
330 | outb(0xa0, ioaddr[0] + 6); | |
331 | outb(out[0], 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(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 | ||
ce6bf4c1 | 349 | if (out[1] != 0x1b) { |
1da177e4 LT |
350 | if (out[0] >= 0x80 && in[0] != (out[1] | 0x80)) |
351 | return -EIO; | |
352 | } | |
353 | return 0; | |
354 | } | |
355 | ||
6aa20a22 | 356 | |
1da177e4 LT |
357 | /* |
358 | * SB1000 hardware routines to be used during frame rx interrupt | |
359 | */ | |
360 | static const int Sb1000TimeOutJiffies = 7 * HZ; | |
361 | ||
362 | /* Card Wait For Ready (to be used during frame rx) */ | |
a8d06342 | 363 | static int |
1da177e4 LT |
364 | sb1000_wait_for_ready(const int ioaddr[], const char* name) |
365 | { | |
366 | unsigned long timeout; | |
367 | ||
368 | timeout = jiffies + Sb1000TimeOutJiffies; | |
369 | while (inb(ioaddr[1] + 6) & 0x80) { | |
370 | if (time_after_eq(jiffies, timeout)) { | |
371 | printk(KERN_WARNING "%s: sb1000_wait_for_ready timeout\n", | |
372 | name); | |
373 | return -ETIME; | |
374 | } | |
375 | } | |
376 | timeout = jiffies + Sb1000TimeOutJiffies; | |
377 | while (!(inb(ioaddr[1] + 6) & 0x40)) { | |
378 | if (time_after_eq(jiffies, timeout)) { | |
379 | printk(KERN_WARNING "%s: sb1000_wait_for_ready timeout\n", | |
380 | name); | |
381 | return -ETIME; | |
382 | } | |
383 | } | |
384 | inb(ioaddr[0] + 7); | |
385 | return 0; | |
386 | } | |
387 | ||
388 | /* Card Wait For Ready Clear (to be used during frame rx) */ | |
a8d06342 | 389 | static int |
1da177e4 LT |
390 | sb1000_wait_for_ready_clear(const int ioaddr[], const char* name) |
391 | { | |
392 | unsigned long timeout; | |
393 | ||
394 | timeout = jiffies + Sb1000TimeOutJiffies; | |
395 | while (inb(ioaddr[1] + 6) & 0x80) { | |
396 | if (time_after_eq(jiffies, timeout)) { | |
397 | printk(KERN_WARNING "%s: sb1000_wait_for_ready_clear timeout\n", | |
398 | name); | |
399 | return -ETIME; | |
400 | } | |
401 | } | |
402 | timeout = jiffies + Sb1000TimeOutJiffies; | |
403 | while (inb(ioaddr[1] + 6) & 0x40) { | |
404 | if (time_after_eq(jiffies, timeout)) { | |
405 | printk(KERN_WARNING "%s: sb1000_wait_for_ready_clear timeout\n", | |
406 | name); | |
407 | return -ETIME; | |
408 | } | |
409 | } | |
410 | return 0; | |
411 | } | |
412 | ||
413 | /* Card Send Command (to be used during frame rx) */ | |
a8d06342 | 414 | static void |
1da177e4 LT |
415 | sb1000_send_command(const int ioaddr[], const char* name, |
416 | const unsigned char out[]) | |
417 | { | |
418 | outb(out[2], ioaddr[0] + 1); | |
419 | outb(out[3], ioaddr[0] + 2); | |
420 | outb(out[4], ioaddr[0] + 3); | |
421 | outb(out[5], ioaddr[0] + 4); | |
422 | outb(out[1], ioaddr[0] + 5); | |
423 | outb(out[0], ioaddr[0] + 7); | |
424 | if (sb1000_debug > 3) | |
425 | printk(KERN_DEBUG "%s: sb1000_send_command out: %02x%02x%02x%02x" | |
426 | "%02x%02x\n", name, out[0], out[1], out[2], out[3], out[4], out[5]); | |
1da177e4 LT |
427 | } |
428 | ||
429 | /* Card Read Status (to be used during frame rx) */ | |
a8d06342 | 430 | static void |
1da177e4 LT |
431 | sb1000_read_status(const int ioaddr[], unsigned char in[]) |
432 | { | |
433 | in[1] = inb(ioaddr[0] + 1); | |
434 | in[2] = inb(ioaddr[0] + 2); | |
435 | in[3] = inb(ioaddr[0] + 3); | |
436 | in[4] = inb(ioaddr[0] + 4); | |
437 | in[0] = inb(ioaddr[0] + 5); | |
1da177e4 LT |
438 | } |
439 | ||
440 | /* Issue Read Command (to be used during frame rx) */ | |
a8d06342 | 441 | static void |
1da177e4 LT |
442 | sb1000_issue_read_command(const int ioaddr[], const char* name) |
443 | { | |
7dd73bbc | 444 | static const unsigned char Command0[6] = {0x20, 0x00, 0x00, 0x01, 0x00, 0x00}; |
1da177e4 LT |
445 | |
446 | sb1000_wait_for_ready_clear(ioaddr, name); | |
447 | outb(0xa0, ioaddr[0] + 6); | |
448 | sb1000_send_command(ioaddr, name, Command0); | |
1da177e4 LT |
449 | } |
450 | ||
6aa20a22 | 451 | |
1da177e4 LT |
452 | /* |
453 | * SB1000 commands for open/configuration | |
454 | */ | |
455 | /* reset SB1000 card */ | |
a8d06342 | 456 | static int |
1da177e4 LT |
457 | sb1000_reset(const int ioaddr[], const char* name) |
458 | { | |
7dd73bbc DV |
459 | static const unsigned char Command0[6] = {0x80, 0x16, 0x00, 0x00, 0x00, 0x00}; |
460 | ||
1da177e4 LT |
461 | unsigned char st[7]; |
462 | int port, status; | |
1da177e4 LT |
463 | |
464 | port = ioaddr[1] + 6; | |
465 | outb(0x4, port); | |
466 | inb(port); | |
467 | udelay(1000); | |
468 | outb(0x0, port); | |
469 | inb(port); | |
a26c074c | 470 | ssleep(1); |
1da177e4 LT |
471 | outb(0x4, port); |
472 | inb(port); | |
473 | udelay(1000); | |
474 | outb(0x0, port); | |
475 | inb(port); | |
476 | udelay(0); | |
477 | ||
478 | if ((status = card_send_command(ioaddr, name, Command0, st))) | |
479 | return status; | |
480 | if (st[3] != 0xf0) | |
481 | return -EIO; | |
482 | return 0; | |
483 | } | |
484 | ||
485 | /* check SB1000 firmware CRC */ | |
a8d06342 | 486 | static int |
1da177e4 LT |
487 | sb1000_check_CRC(const int ioaddr[], const char* name) |
488 | { | |
7dd73bbc DV |
489 | static const unsigned char Command0[6] = {0x80, 0x1f, 0x00, 0x00, 0x00, 0x00}; |
490 | ||
1da177e4 | 491 | unsigned char st[7]; |
ce6bf4c1 | 492 | int status; |
1da177e4 LT |
493 | |
494 | /* check CRC */ | |
495 | if ((status = card_send_command(ioaddr, name, Command0, st))) | |
496 | return status; | |
497 | if (st[1] != st[3] || st[2] != st[4]) | |
498 | return -EIO; | |
1da177e4 LT |
499 | return 0; |
500 | } | |
501 | ||
502 | static inline int | |
503 | sb1000_start_get_set_command(const int ioaddr[], const char* name) | |
504 | { | |
7dd73bbc DV |
505 | static const unsigned char Command0[6] = {0x80, 0x1b, 0x00, 0x00, 0x00, 0x00}; |
506 | ||
1da177e4 | 507 | unsigned char st[7]; |
1da177e4 LT |
508 | |
509 | return card_send_command(ioaddr, name, Command0, st); | |
510 | } | |
511 | ||
a8d06342 | 512 | static int |
1da177e4 LT |
513 | sb1000_end_get_set_command(const int ioaddr[], const char* name) |
514 | { | |
7dd73bbc DV |
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 | ||
1da177e4 LT |
518 | unsigned char st[7]; |
519 | int status; | |
1da177e4 LT |
520 | |
521 | if ((status = card_send_command(ioaddr, name, Command0, st))) | |
522 | return status; | |
523 | return card_send_command(ioaddr, name, Command1, st); | |
524 | } | |
525 | ||
a8d06342 | 526 | static int |
1da177e4 LT |
527 | sb1000_activate(const int ioaddr[], const char* name) |
528 | { | |
7dd73bbc DV |
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 | ||
1da177e4 LT |
532 | unsigned char st[7]; |
533 | int status; | |
1da177e4 | 534 | |
a26c074c | 535 | ssleep(1); |
6394d98d CIK |
536 | status = card_send_command(ioaddr, name, Command0, st); |
537 | if (status) | |
1da177e4 | 538 | return status; |
6394d98d CIK |
539 | status = card_send_command(ioaddr, name, Command1, st); |
540 | if (status) | |
1da177e4 LT |
541 | return status; |
542 | if (st[3] != 0xf1) { | |
6394d98d CIK |
543 | status = sb1000_start_get_set_command(ioaddr, name); |
544 | if (status) | |
1da177e4 LT |
545 | return status; |
546 | return -EIO; | |
547 | } | |
548 | udelay(1000); | |
6394d98d | 549 | return sb1000_start_get_set_command(ioaddr, name); |
1da177e4 LT |
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 | { | |
7dd73bbc DV |
557 | static const unsigned char Command0[6] = {0x80, 0x23, 0x00, 0x00, 0x00, 0x00}; |
558 | ||
1da177e4 LT |
559 | unsigned char st[7]; |
560 | int status; | |
1da177e4 LT |
561 | |
562 | if ((status = sb1000_start_get_set_command(ioaddr, name))) | |
563 | return status; | |
564 | if ((status = card_send_command(ioaddr, name, Command0, 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 | { | |
7dd73bbc DV |
580 | static const unsigned char Command0[6] = {0x80, 0x44, 0x00, 0x00, 0x00, 0x00}; |
581 | ||
1da177e4 LT |
582 | unsigned char st[7]; |
583 | int status; | |
1da177e4 LT |
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, Command0, 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, Command0, st); | |
622 | } | |
623 | ||
624 | /* get SB1000 PIDs */ | |
625 | static int | |
626 | sb1000_get_PIDs(const int ioaddr[], const char* name, short PID[]) | |
627 | { | |
7dd73bbc DV |
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 | ||
1da177e4 LT |
633 | unsigned char st[7]; |
634 | int status; | |
1da177e4 LT |
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, Command0, st))) | |
641 | return status; | |
642 | PID[0] = st[1] << 8 | st[2]; | |
643 | ||
644 | if ((status = card_send_command(ioaddr, name, Command1, st))) | |
645 | return status; | |
646 | PID[1] = st[1] << 8 | st[2]; | |
647 | ||
648 | if ((status = card_send_command(ioaddr, name, Command2, st))) | |
649 | return status; | |
650 | PID[2] = st[1] << 8 | st[2]; | |
651 | ||
652 | if ((status = card_send_command(ioaddr, name, Command3, 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 | { | |
7dd73bbc DV |
663 | static const unsigned char Command4[6] = {0x80, 0x2e, 0x00, 0x00, 0x00, 0x00}; |
664 | ||
1da177e4 LT |
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}; | |
1da177e4 LT |
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, Command0, 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, Command1, 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, Command2, 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, Command3, st))) | |
703 | return status; | |
704 | ||
705 | if ((status = card_send_command(ioaddr, name, Command4, st))) | |
706 | return status; | |
707 | return sb1000_end_get_set_command(ioaddr, name); | |
708 | } | |
709 | ||
6aa20a22 | 710 | |
a8d06342 | 711 | static void |
1da177e4 LT |
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 | } | |
1da177e4 LT |
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 | */ | |
a8d06342 | 741 | static int |
1da177e4 LT |
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); | |
09f75cd7 | 752 | struct net_device_stats *stats = &dev->stats; |
1da177e4 LT |
753 | |
754 | /* SB1000 frame constants */ | |
755 | const int FrameSize = FRAMESIZE; | |
756 | const int NewDatagramHeaderSkip = 8; | |
757 | const int NewDatagramHeaderSize = NewDatagramHeaderSkip + 18; | |
758 | const int NewDatagramDataSize = FrameSize - NewDatagramHeaderSize; | |
759 | const int ContDatagramHeaderSkip = 7; | |
760 | const int ContDatagramHeaderSize = ContDatagramHeaderSkip + 1; | |
761 | const int ContDatagramDataSize = FrameSize - ContDatagramHeaderSize; | |
762 | const int TrailerSize = 4; | |
763 | ||
764 | ioaddr = dev->base_addr; | |
765 | ||
766 | insw(ioaddr, (unsigned short*) st, 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(ioaddr, buffer, 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(ioaddr, buffer, 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(ioaddr, buffer, 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(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(ioaddr, buffer, NewDatagramDataSize / 2); | |
843 | goto dropped_frame; | |
844 | } | |
845 | skb->dev = dev; | |
459a98ed | 846 | skb_reset_mac_header(skb); |
1da177e4 LT |
847 | skb->protocol = (unsigned short) buffer[NewDatagramHeaderSkip + 16]; |
848 | insw(ioaddr, skb_put(skb, NewDatagramDataSize), | |
849 | NewDatagramDataSize / 2); | |
850 | lp->rx_skb[ns] = skb; | |
851 | } else { | |
852 | /* continuation of previous datagram */ | |
853 | insw(ioaddr, buffer, 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(ioaddr, buffer, ContDatagramDataSize / 2); | |
861 | goto bad_frame_next; | |
862 | } | |
863 | skb = lp->rx_skb[ns]; | |
864 | insw(ioaddr, skb_put(skb, ContDatagramDataSize), | |
865 | 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, dlen); | |
baebdf48 | 875 | __netif_rx(skb); |
1da177e4 LT |
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(ioaddr, buffer, 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(dev->name, st, buffer, 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 | ||
a8d06342 | 903 | static void |
1da177e4 LT |
904 | sb1000_error_dpc(struct net_device *dev) |
905 | { | |
7dd73bbc DV |
906 | static const unsigned char Command0[6] = {0x80, 0x26, 0x00, 0x00, 0x00, 0x00}; |
907 | ||
1da177e4 LT |
908 | char *name; |
909 | unsigned char st[5]; | |
910 | int ioaddr[2]; | |
911 | struct sb1000_private *lp = netdev_priv(dev); | |
1da177e4 LT |
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, Command0); | |
921 | sb1000_wait_for_ready(ioaddr, name); | |
922 | sb1000_read_status(ioaddr, st); | |
923 | if (st[1] & 0x10) | |
924 | lp->rx_error_dpc_count = ErrorDpcCounterInitialize; | |
1da177e4 LT |
925 | } |
926 | ||
6aa20a22 | 927 | |
1da177e4 LT |
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; | |
a26c074c | 947 | ssleep(1); |
1da177e4 LT |
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; | |
d58c0e95 JL |
964 | lp->rx_session_id[1] = 0x48; |
965 | lp->rx_session_id[2] = 0x44; | |
966 | lp->rx_session_id[3] = 0x42; | |
1da177e4 LT |
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; | |
a0607fd3 | 971 | if (request_irq(dev->irq, sb1000_interrupt, 0, "sb1000", dev)) { |
1da177e4 LT |
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, 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 | ||
cc0aa831 AB |
995 | static int sb1000_siocdevprivate(struct net_device *dev, struct ifreq *ifr, |
996 | void __user *data, int cmd) | |
1da177e4 LT |
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 */ | |
09f75cd7 | 1015 | stats[0] = dev->stats.rx_bytes; |
1da177e4 | 1016 | stats[1] = lp->rx_frames; |
09f75cd7 JG |
1017 | stats[2] = dev->stats.rx_packets; |
1018 | stats[3] = dev->stats.rx_errors; | |
1019 | stats[4] = dev->stats.rx_dropped; | |
cc0aa831 | 1020 | if (copy_to_user(data, stats, sizeof(stats))) |
1da177e4 LT |
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, 1))) | |
1027 | return status; | |
cc0aa831 | 1028 | if (copy_to_user(data, version, sizeof(version))) |
1da177e4 LT |
1029 | return -EFAULT; |
1030 | break; | |
1031 | ||
1032 | case SIOCGCMFREQUENCY: /* get frequency */ | |
1033 | if ((status = sb1000_get_frequency(ioaddr, name, &frequency))) | |
1034 | return status; | |
cc0aa831 | 1035 | if (put_user(frequency, (int __user *)data)) |
1da177e4 LT |
1036 | return -EFAULT; |
1037 | break; | |
1038 | ||
1039 | case SIOCSCMFREQUENCY: /* set frequency */ | |
1040 | if (!capable(CAP_NET_ADMIN)) | |
1041 | return -EPERM; | |
cc0aa831 | 1042 | if (get_user(frequency, (int __user *)data)) |
1da177e4 LT |
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; | |
cc0aa831 | 1051 | if (copy_to_user(data, PID, sizeof(PID))) |
1da177e4 LT |
1052 | return -EFAULT; |
1053 | break; | |
1054 | ||
1055 | case SIOCSCMPIDS: /* set PIDs */ | |
1056 | if (!capable(CAP_NET_ADMIN)) | |
1057 | return -EPERM; | |
cc0aa831 | 1058 | if (copy_from_user(PID, data, sizeof(PID))) |
1da177e4 LT |
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 */ | |
61357325 | 1081 | static netdev_tx_t |
1da177e4 LT |
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); | |
6ed10654 | 1087 | return NETDEV_TX_OK; |
1da177e4 LT |
1088 | } |
1089 | ||
1090 | /* SB1000 interrupt handler. */ | |
7d12e780 | 1091 | static irqreturn_t sb1000_interrupt(int irq, void *dev_id) |
1da177e4 | 1092 | { |
7dd73bbc DV |
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 | ||
1da177e4 LT |
1096 | char *name; |
1097 | unsigned char st; | |
1098 | int ioaddr[2]; | |
c31f28e7 | 1099 | struct net_device *dev = dev_id; |
1da177e4 LT |
1100 | struct sb1000_private *lp = netdev_priv(dev); |
1101 | ||
1da177e4 LT |
1102 | const int MaxRxErrorCount = 6; |
1103 | ||
1da177e4 LT |
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(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(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, 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, 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 | ||
1da177e4 LT |
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); | |
6aa20a22 | 1156 | |
1da177e4 LT |
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 | ||
ed03538a | 1179 | module_pnp_driver(sb1000_driver); |