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PM / sleep: Asynchronous threads for suspend_noirq
[linux/fpc-iii.git] / drivers / media / pci / bt8xx / dst_ca.c
blob0e788fca992cf1e27579dd689a12cfc2b0da2f38
1 /*
2 CA-driver for TwinHan DST Frontend/Card
3
4 Copyright (C) 2004, 2005 Manu Abraham (manu@kromtek.com)
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 */
20
21 #include <linux/kernel.h>
22 #include <linux/module.h>
23 #include <linux/slab.h>
24 #include <linux/init.h>
25 #include <linux/mutex.h>
26 #include <linux/string.h>
27 #include <linux/dvb/ca.h>
28 #include "dvbdev.h"
29 #include "dvb_frontend.h"
30 #include "dst_ca.h"
31 #include "dst_common.h"
32
33 #define DST_CA_ERROR 0
34 #define DST_CA_NOTICE 1
35 #define DST_CA_INFO 2
36 #define DST_CA_DEBUG 3
37
38 #define dprintk(x, y, z, format, arg...) do { \
39 if (z) { \
40 if ((x > DST_CA_ERROR) && (x > y)) \
41 printk(KERN_ERR "%s: " format "\n", __func__ , ##arg); \
42 else if ((x > DST_CA_NOTICE) && (x > y)) \
43 printk(KERN_NOTICE "%s: " format "\n", __func__ , ##arg); \
44 else if ((x > DST_CA_INFO) && (x > y)) \
45 printk(KERN_INFO "%s: " format "\n", __func__ , ##arg); \
46 else if ((x > DST_CA_DEBUG) && (x > y)) \
47 printk(KERN_DEBUG "%s: " format "\n", __func__ , ##arg); \
48 } else { \
49 if (x > y) \
50 printk(format, ## arg); \
51 } \
52 } while(0)
53
54
55 static DEFINE_MUTEX(dst_ca_mutex);
56 static unsigned int verbose = 5;
57 module_param(verbose, int, 0644);
58 MODULE_PARM_DESC(verbose, "verbose startup messages, default is 1 (yes)");
59
60 /* Need some more work */
61 static int ca_set_slot_descr(void)
62 {
63 /* We could make this more graceful ? */
64 return -EOPNOTSUPP;
65 }
66
67 /* Need some more work */
68 static int ca_set_pid(void)
69 {
70 /* We could make this more graceful ? */
71 return -EOPNOTSUPP;
72 }
73
74 static void put_command_and_length(u8 *data, int command, int length)
75 {
76 data[0] = (command >> 16) & 0xff;
77 data[1] = (command >> 8) & 0xff;
78 data[2] = command & 0xff;
79 data[3] = length;
80 }
81
82 static void put_checksum(u8 *check_string, int length)
83 {
84 dprintk(verbose, DST_CA_DEBUG, 1, " Computing string checksum.");
85 dprintk(verbose, DST_CA_DEBUG, 1, " -> string length : 0x%02x", length);
86 check_string[length] = dst_check_sum (check_string, length);
87 dprintk(verbose, DST_CA_DEBUG, 1, " -> checksum : 0x%02x", check_string[length]);
88 }
89
90 static int dst_ci_command(struct dst_state* state, u8 * data, u8 *ca_string, u8 len, int read)
91 {
92 u8 reply;
93
94 mutex_lock(&state->dst_mutex);
95 dst_comm_init(state);
96 msleep(65);
97
98 if (write_dst(state, data, len)) {
99 dprintk(verbose, DST_CA_INFO, 1, " Write not successful, trying to recover");
100 dst_error_recovery(state);
101 goto error;
102 }
103 if ((dst_pio_disable(state)) < 0) {
104 dprintk(verbose, DST_CA_ERROR, 1, " DST PIO disable failed.");
105 goto error;
106 }
107 if (read_dst(state, &reply, GET_ACK) < 0) {
108 dprintk(verbose, DST_CA_INFO, 1, " Read not successful, trying to recover");
109 dst_error_recovery(state);
110 goto error;
111 }
112 if (read) {
113 if (! dst_wait_dst_ready(state, LONG_DELAY)) {
114 dprintk(verbose, DST_CA_NOTICE, 1, " 8820 not ready");
115 goto error;
116 }
117 if (read_dst(state, ca_string, 128) < 0) { /* Try to make this dynamic */
118 dprintk(verbose, DST_CA_INFO, 1, " Read not successful, trying to recover");
119 dst_error_recovery(state);
120 goto error;
121 }
122 }
123 mutex_unlock(&state->dst_mutex);
124 return 0;
125
126 error:
127 mutex_unlock(&state->dst_mutex);
128 return -EIO;
129 }
130
131
132 static int dst_put_ci(struct dst_state *state, u8 *data, int len, u8 *ca_string, int read)
133 {
134 u8 dst_ca_comm_err = 0;
135
136 while (dst_ca_comm_err < RETRIES) {
137 dprintk(verbose, DST_CA_NOTICE, 1, " Put Command");
138 if (dst_ci_command(state, data, ca_string, len, read)) { // If error
139 dst_error_recovery(state);
140 dst_ca_comm_err++; // work required here.
141 } else {
142 break;
143 }
144 }
145
146 if(dst_ca_comm_err == RETRIES)
147 return -1;
148
149 return 0;
150 }
151
152
153
154 static int ca_get_app_info(struct dst_state *state)
155 {
156 int length, str_length;
157 static u8 command[8] = {0x07, 0x40, 0x01, 0x00, 0x01, 0x00, 0x00, 0xff};
158
159 put_checksum(&command[0], command[0]);
160 if ((dst_put_ci(state, command, sizeof(command), state->messages, GET_REPLY)) < 0) {
161 dprintk(verbose, DST_CA_ERROR, 1, " -->dst_put_ci FAILED !");
162 return -1;
163 }
164 dprintk(verbose, DST_CA_INFO, 1, " -->dst_put_ci SUCCESS !");
165 dprintk(verbose, DST_CA_INFO, 1, " ================================ CI Module Application Info ======================================");
166 dprintk(verbose, DST_CA_INFO, 1, " Application Type=[%d], Application Vendor=[%d], Vendor Code=[%d]\n%s: Application info=[%s]",
167 state->messages[7], (state->messages[8] << 8) | state->messages[9],
168 (state->messages[10] << 8) | state->messages[11], __func__, (char *)(&state->messages[12]));
169 dprintk(verbose, DST_CA_INFO, 1, " ==================================================================================================");
170
171 // Transform dst message to correct application_info message
172 length = state->messages[5];
173 str_length = length - 6;
174 if (str_length < 0) {
175 str_length = 0;
176 dprintk(verbose, DST_CA_ERROR, 1, "Invalid string length returned in ca_get_app_info(). Recovering.");
177 }
178
179 // First, the command and length fields
180 put_command_and_length(&state->messages[0], CA_APP_INFO, length);
181
182 // Copy application_type, application_manufacturer and manufacturer_code
183 memmove(&state->messages[4], &state->messages[7], 5);
184
185 // Set string length and copy string
186 state->messages[9] = str_length;
187 memmove(&state->messages[10], &state->messages[12], str_length);
188
189 return 0;
190 }
191
192 static int ca_get_ca_info(struct dst_state *state)
193 {
194 int srcPtr, dstPtr, i, num_ids;
195 static u8 slot_command[8] = {0x07, 0x40, 0x00, 0x00, 0x02, 0x00, 0x00, 0xff};
196 const int in_system_id_pos = 8, out_system_id_pos = 4, in_num_ids_pos = 7;
197
198 put_checksum(&slot_command[0], slot_command[0]);
199 if ((dst_put_ci(state, slot_command, sizeof (slot_command), state->messages, GET_REPLY)) < 0) {
200 dprintk(verbose, DST_CA_ERROR, 1, " -->dst_put_ci FAILED !");
201 return -1;
202 }
203 dprintk(verbose, DST_CA_INFO, 1, " -->dst_put_ci SUCCESS !");
204
205 // Print raw data
206 dprintk(verbose, DST_CA_INFO, 0, " DST data = [");
207 for (i = 0; i < state->messages[0] + 1; i++) {
208 dprintk(verbose, DST_CA_INFO, 0, " 0x%02x", state->messages[i]);
209 }
210 dprintk(verbose, DST_CA_INFO, 0, "]\n");
211
212 // Set the command and length of the output
213 num_ids = state->messages[in_num_ids_pos];
214 if (num_ids >= 100) {
215 num_ids = 100;
216 dprintk(verbose, DST_CA_ERROR, 1, "Invalid number of ids (>100). Recovering.");
217 }
218 put_command_and_length(&state->messages[0], CA_INFO, num_ids * 2);
219
220 dprintk(verbose, DST_CA_INFO, 0, " CA_INFO = [");
221 srcPtr = in_system_id_pos;
222 dstPtr = out_system_id_pos;
223 for(i = 0; i < num_ids; i++) {
224 dprintk(verbose, DST_CA_INFO, 0, " 0x%02x%02x", state->messages[srcPtr + 0], state->messages[srcPtr + 1]);
225 // Append to output
226 state->messages[dstPtr + 0] = state->messages[srcPtr + 0];
227 state->messages[dstPtr + 1] = state->messages[srcPtr + 1];
228 srcPtr += 2;
229 dstPtr += 2;
230 }
231 dprintk(verbose, DST_CA_INFO, 0, "]\n");
232
233 return 0;
234 }
235
236 static int ca_get_slot_caps(struct dst_state *state, struct ca_caps *p_ca_caps, void __user *arg)
237 {
238 int i;
239 u8 slot_cap[256];
240 static u8 slot_command[8] = {0x07, 0x40, 0x02, 0x00, 0x02, 0x00, 0x00, 0xff};
241
242 put_checksum(&slot_command[0], slot_command[0]);
243 if ((dst_put_ci(state, slot_command, sizeof (slot_command), slot_cap, GET_REPLY)) < 0) {
244 dprintk(verbose, DST_CA_ERROR, 1, " -->dst_put_ci FAILED !");
245 return -1;
246 }
247 dprintk(verbose, DST_CA_NOTICE, 1, " -->dst_put_ci SUCCESS !");
248
249 /* Will implement the rest soon */
250
251 dprintk(verbose, DST_CA_INFO, 1, " Slot cap = [%d]", slot_cap[7]);
252 dprintk(verbose, DST_CA_INFO, 0, "===================================\n");
253 for (i = 0; i < slot_cap[0] + 1; i++)
254 dprintk(verbose, DST_CA_INFO, 0, " %d", slot_cap[i]);
255 dprintk(verbose, DST_CA_INFO, 0, "\n");
256
257 p_ca_caps->slot_num = 1;
258 p_ca_caps->slot_type = 1;
259 p_ca_caps->descr_num = slot_cap[7];
260 p_ca_caps->descr_type = 1;
261
262 if (copy_to_user(arg, p_ca_caps, sizeof (struct ca_caps)))
263 return -EFAULT;
264
265 return 0;
266 }
267
268 /* Need some more work */
269 static int ca_get_slot_descr(struct dst_state *state, struct ca_msg *p_ca_message, void __user *arg)
270 {
271 return -EOPNOTSUPP;
272 }
273
274
275 static int ca_get_slot_info(struct dst_state *state, struct ca_slot_info *p_ca_slot_info, void __user *arg)
276 {
277 int i;
278 static u8 slot_command[8] = {0x00, 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff};
279
280 u8 *slot_info = state->messages;
281
282 put_checksum(&slot_command[0], 7);
283 if ((dst_put_ci(state, slot_command, sizeof (slot_command), slot_info, GET_REPLY)) < 0) {
284 dprintk(verbose, DST_CA_ERROR, 1, " -->dst_put_ci FAILED !");
285 return -1;
286 }
287 dprintk(verbose, DST_CA_INFO, 1, " -->dst_put_ci SUCCESS !");
288
289 /* Will implement the rest soon */
290
291 dprintk(verbose, DST_CA_INFO, 1, " Slot info = [%d]", slot_info[3]);
292 dprintk(verbose, DST_CA_INFO, 0, "===================================\n");
293 for (i = 0; i < 8; i++)
294 dprintk(verbose, DST_CA_INFO, 0, " %d", slot_info[i]);
295 dprintk(verbose, DST_CA_INFO, 0, "\n");
296
297 if (slot_info[4] & 0x80) {
298 p_ca_slot_info->flags = CA_CI_MODULE_PRESENT;
299 p_ca_slot_info->num = 1;
300 p_ca_slot_info->type = CA_CI;
301 } else if (slot_info[4] & 0x40) {
302 p_ca_slot_info->flags = CA_CI_MODULE_READY;
303 p_ca_slot_info->num = 1;
304 p_ca_slot_info->type = CA_CI;
305 } else
306 p_ca_slot_info->flags = 0;
307
308 if (copy_to_user(arg, p_ca_slot_info, sizeof (struct ca_slot_info)))
309 return -EFAULT;
310
311 return 0;
312 }
313
314
315 static int ca_get_message(struct dst_state *state, struct ca_msg *p_ca_message, void __user *arg)
316 {
317 u8 i = 0;
318 u32 command = 0;
319
320 if (copy_from_user(p_ca_message, arg, sizeof (struct ca_msg)))
321 return -EFAULT;
322
323 if (p_ca_message->msg) {
324 dprintk(verbose, DST_CA_NOTICE, 1, " Message = [%*ph]",
325 3, p_ca_message->msg);
326
327 for (i = 0; i < 3; i++) {
328 command = command | p_ca_message->msg[i];
329 if (i < 2)
330 command = command << 8;
331 }
332 dprintk(verbose, DST_CA_NOTICE, 1, " Command=[0x%x]", command);
333
334 switch (command) {
335 case CA_APP_INFO:
336 memcpy(p_ca_message->msg, state->messages, 128);
337 if (copy_to_user(arg, p_ca_message, sizeof (struct ca_msg)) )
338 return -EFAULT;
339 break;
340 case CA_INFO:
341 memcpy(p_ca_message->msg, state->messages, 128);
342 if (copy_to_user(arg, p_ca_message, sizeof (struct ca_msg)) )
343 return -EFAULT;
344 break;
345 }
346 }
347
348 return 0;
349 }
350
351 static int handle_dst_tag(struct dst_state *state, struct ca_msg *p_ca_message, struct ca_msg *hw_buffer, u32 length)
352 {
353 if (state->dst_hw_cap & DST_TYPE_HAS_SESSION) {
354 hw_buffer->msg[2] = p_ca_message->msg[1]; /* MSB */
355 hw_buffer->msg[3] = p_ca_message->msg[2]; /* LSB */
356 } else {
357 if (length > 247) {
358 dprintk(verbose, DST_CA_ERROR, 1, " Message too long ! *** Bailing Out *** !");
359 return -1;
360 }
361 hw_buffer->msg[0] = (length & 0xff) + 7;
362 hw_buffer->msg[1] = 0x40;
363 hw_buffer->msg[2] = 0x03;
364 hw_buffer->msg[3] = 0x00;
365 hw_buffer->msg[4] = 0x03;
366 hw_buffer->msg[5] = length & 0xff;
367 hw_buffer->msg[6] = 0x00;
368
369 /*
370 * Need to compute length for EN50221 section 8.3.2, for the time being
371 * assuming 8.3.2 is not applicable
372 */
373 memcpy(&hw_buffer->msg[7], &p_ca_message->msg[4], length);
374 }
375
376 return 0;
377 }
378
379 static int write_to_8820(struct dst_state *state, struct ca_msg *hw_buffer, u8 length, u8 reply)
380 {
381 if ((dst_put_ci(state, hw_buffer->msg, length, hw_buffer->msg, reply)) < 0) {
382 dprintk(verbose, DST_CA_ERROR, 1, " DST-CI Command failed.");
383 dprintk(verbose, DST_CA_NOTICE, 1, " Resetting DST.");
384 rdc_reset_state(state);
385 return -1;
386 }
387 dprintk(verbose, DST_CA_NOTICE, 1, " DST-CI Command success.");
388
389 return 0;
390 }
391
392 static u32 asn_1_decode(u8 *asn_1_array)
393 {
394 u8 length_field = 0, word_count = 0, count = 0;
395 u32 length = 0;
396
397 length_field = asn_1_array[0];
398 dprintk(verbose, DST_CA_DEBUG, 1, " Length field=[%02x]", length_field);
399 if (length_field < 0x80) {
400 length = length_field & 0x7f;
401 dprintk(verbose, DST_CA_DEBUG, 1, " Length=[%02x]\n", length);
402 } else {
403 word_count = length_field & 0x7f;
404 for (count = 0; count < word_count; count++) {
405 length = length << 8;
406 length += asn_1_array[count + 1];
407 dprintk(verbose, DST_CA_DEBUG, 1, " Length=[%04x]", length);
408 }
409 }
410 return length;
411 }
412
413 static int debug_string(u8 *msg, u32 length, u32 offset)
414 {
415 u32 i;
416
417 dprintk(verbose, DST_CA_DEBUG, 0, " String=[ ");
418 for (i = offset; i < length; i++)
419 dprintk(verbose, DST_CA_DEBUG, 0, "%02x ", msg[i]);
420 dprintk(verbose, DST_CA_DEBUG, 0, "]\n");
421
422 return 0;
423 }
424
425
426 static int ca_set_pmt(struct dst_state *state, struct ca_msg *p_ca_message, struct ca_msg *hw_buffer, u8 reply, u8 query)
427 {
428 u32 length = 0;
429 u8 tag_length = 8;
430
431 length = asn_1_decode(&p_ca_message->msg[3]);
432 dprintk(verbose, DST_CA_DEBUG, 1, " CA Message length=[%d]", length);
433 debug_string(&p_ca_message->msg[4], length, 0); /* length is excluding tag & length */
434
435 memset(hw_buffer->msg, '\0', length);
436 handle_dst_tag(state, p_ca_message, hw_buffer, length);
437 put_checksum(hw_buffer->msg, hw_buffer->msg[0]);
438
439 debug_string(hw_buffer->msg, (length + tag_length), 0); /* tags too */
440 write_to_8820(state, hw_buffer, (length + tag_length), reply);
441
442 return 0;
443 }
444
445
446 /* Board supports CA PMT reply ? */
447 static int dst_check_ca_pmt(struct dst_state *state, struct ca_msg *p_ca_message, struct ca_msg *hw_buffer)
448 {
449 int ca_pmt_reply_test = 0;
450
451 /* Do test board */
452 /* Not there yet but soon */
453
454 /* CA PMT Reply capable */
455 if (ca_pmt_reply_test) {
456 if ((ca_set_pmt(state, p_ca_message, hw_buffer, 1, GET_REPLY)) < 0) {
457 dprintk(verbose, DST_CA_ERROR, 1, " ca_set_pmt.. failed !");
458 return -1;
459 }
460
461 /* Process CA PMT Reply */
462 /* will implement soon */
463 dprintk(verbose, DST_CA_ERROR, 1, " Not there yet");
464 }
465 /* CA PMT Reply not capable */
466 if (!ca_pmt_reply_test) {
467 if ((ca_set_pmt(state, p_ca_message, hw_buffer, 0, NO_REPLY)) < 0) {
468 dprintk(verbose, DST_CA_ERROR, 1, " ca_set_pmt.. failed !");
469 return -1;
470 }
471 dprintk(verbose, DST_CA_NOTICE, 1, " ca_set_pmt.. success !");
472 /* put a dummy message */
473
474 }
475 return 0;
476 }
477
478 static int ca_send_message(struct dst_state *state, struct ca_msg *p_ca_message, void __user *arg)
479 {
480 int i = 0;
481
482 u32 command = 0;
483 struct ca_msg *hw_buffer;
484 int result = 0;
485
486 if ((hw_buffer = kmalloc(sizeof (struct ca_msg), GFP_KERNEL)) == NULL) {
487 dprintk(verbose, DST_CA_ERROR, 1, " Memory allocation failure");
488 return -ENOMEM;
489 }
490 dprintk(verbose, DST_CA_DEBUG, 1, " ");
491
492 if (copy_from_user(p_ca_message, arg, sizeof (struct ca_msg))) {
493 result = -EFAULT;
494 goto free_mem_and_exit;
495 }
496
497
498 if (p_ca_message->msg) {
499 /* EN50221 tag */
500 command = 0;
501
502 for (i = 0; i < 3; i++) {
503 command = command | p_ca_message->msg[i];
504 if (i < 2)
505 command = command << 8;
506 }
507 dprintk(verbose, DST_CA_DEBUG, 1, " Command=[0x%x]\n", command);
508
509 switch (command) {
510 case CA_PMT:
511 dprintk(verbose, DST_CA_DEBUG, 1, "Command = SEND_CA_PMT");
512 if ((ca_set_pmt(state, p_ca_message, hw_buffer, 0, 0)) < 0) { // code simplification started
513 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_PMT Failed !");
514 result = -1;
515 goto free_mem_and_exit;
516 }
517 dprintk(verbose, DST_CA_INFO, 1, " -->CA_PMT Success !");
518 break;
519 case CA_PMT_REPLY:
520 dprintk(verbose, DST_CA_INFO, 1, "Command = CA_PMT_REPLY");
521 /* Have to handle the 2 basic types of cards here */
522 if ((dst_check_ca_pmt(state, p_ca_message, hw_buffer)) < 0) {
523 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_PMT_REPLY Failed !");
524 result = -1;
525 goto free_mem_and_exit;
526 }
527 dprintk(verbose, DST_CA_INFO, 1, " -->CA_PMT_REPLY Success !");
528 break;
529 case CA_APP_INFO_ENQUIRY: // only for debugging
530 dprintk(verbose, DST_CA_INFO, 1, " Getting Cam Application information");
531
532 if ((ca_get_app_info(state)) < 0) {
533 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_APP_INFO_ENQUIRY Failed !");
534 result = -1;
535 goto free_mem_and_exit;
536 }
537 dprintk(verbose, DST_CA_INFO, 1, " -->CA_APP_INFO_ENQUIRY Success !");
538 break;
539 case CA_INFO_ENQUIRY:
540 dprintk(verbose, DST_CA_INFO, 1, " Getting CA Information");
541
542 if ((ca_get_ca_info(state)) < 0) {
543 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_INFO_ENQUIRY Failed !");
544 result = -1;
545 goto free_mem_and_exit;
546 }
547 dprintk(verbose, DST_CA_INFO, 1, " -->CA_INFO_ENQUIRY Success !");
548 break;
549 }
550 }
551 free_mem_and_exit:
552 kfree (hw_buffer);
553
554 return result;
555 }
556
557 static long dst_ca_ioctl(struct file *file, unsigned int cmd, unsigned long ioctl_arg)
558 {
559 struct dvb_device *dvbdev;
560 struct dst_state *state;
561 struct ca_slot_info *p_ca_slot_info;
562 struct ca_caps *p_ca_caps;
563 struct ca_msg *p_ca_message;
564 void __user *arg = (void __user *)ioctl_arg;
565 int result = 0;
566
567 mutex_lock(&dst_ca_mutex);
568 dvbdev = file->private_data;
569 state = (struct dst_state *)dvbdev->priv;
570 p_ca_message = kmalloc(sizeof (struct ca_msg), GFP_KERNEL);
571 p_ca_slot_info = kmalloc(sizeof (struct ca_slot_info), GFP_KERNEL);
572 p_ca_caps = kmalloc(sizeof (struct ca_caps), GFP_KERNEL);
573 if (!p_ca_message || !p_ca_slot_info || !p_ca_caps) {
574 dprintk(verbose, DST_CA_ERROR, 1, " Memory allocation failure");
575 result = -ENOMEM;
576 goto free_mem_and_exit;
577 }
578
579 /* We have now only the standard ioctl's, the driver is upposed to handle internals. */
580 switch (cmd) {
581 case CA_SEND_MSG:
582 dprintk(verbose, DST_CA_INFO, 1, " Sending message");
583 if ((ca_send_message(state, p_ca_message, arg)) < 0) {
584 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_SEND_MSG Failed !");
585 result = -1;
586 goto free_mem_and_exit;
587 }
588 break;
589 case CA_GET_MSG:
590 dprintk(verbose, DST_CA_INFO, 1, " Getting message");
591 if ((ca_get_message(state, p_ca_message, arg)) < 0) {
592 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_GET_MSG Failed !");
593 result = -1;
594 goto free_mem_and_exit;
595 }
596 dprintk(verbose, DST_CA_INFO, 1, " -->CA_GET_MSG Success !");
597 break;
598 case CA_RESET:
599 dprintk(verbose, DST_CA_ERROR, 1, " Resetting DST");
600 dst_error_bailout(state);
601 msleep(4000);
602 break;
603 case CA_GET_SLOT_INFO:
604 dprintk(verbose, DST_CA_INFO, 1, " Getting Slot info");
605 if ((ca_get_slot_info(state, p_ca_slot_info, arg)) < 0) {
606 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_GET_SLOT_INFO Failed !");
607 result = -1;
608 goto free_mem_and_exit;
609 }
610 dprintk(verbose, DST_CA_INFO, 1, " -->CA_GET_SLOT_INFO Success !");
611 break;
612 case CA_GET_CAP:
613 dprintk(verbose, DST_CA_INFO, 1, " Getting Slot capabilities");
614 if ((ca_get_slot_caps(state, p_ca_caps, arg)) < 0) {
615 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_GET_CAP Failed !");
616 result = -1;
617 goto free_mem_and_exit;
618 }
619 dprintk(verbose, DST_CA_INFO, 1, " -->CA_GET_CAP Success !");
620 break;
621 case CA_GET_DESCR_INFO:
622 dprintk(verbose, DST_CA_INFO, 1, " Getting descrambler description");
623 if ((ca_get_slot_descr(state, p_ca_message, arg)) < 0) {
624 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_GET_DESCR_INFO Failed !");
625 result = -1;
626 goto free_mem_and_exit;
627 }
628 dprintk(verbose, DST_CA_INFO, 1, " -->CA_GET_DESCR_INFO Success !");
629 break;
630 case CA_SET_DESCR:
631 dprintk(verbose, DST_CA_INFO, 1, " Setting descrambler");
632 if ((ca_set_slot_descr()) < 0) {
633 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_SET_DESCR Failed !");
634 result = -1;
635 goto free_mem_and_exit;
636 }
637 dprintk(verbose, DST_CA_INFO, 1, " -->CA_SET_DESCR Success !");
638 break;
639 case CA_SET_PID:
640 dprintk(verbose, DST_CA_INFO, 1, " Setting PID");
641 if ((ca_set_pid()) < 0) {
642 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_SET_PID Failed !");
643 result = -1;
644 goto free_mem_and_exit;
645 }
646 dprintk(verbose, DST_CA_INFO, 1, " -->CA_SET_PID Success !");
647 default:
648 result = -EOPNOTSUPP;
649 }
650 free_mem_and_exit:
651 kfree (p_ca_message);
652 kfree (p_ca_slot_info);
653 kfree (p_ca_caps);
654
655 mutex_unlock(&dst_ca_mutex);
656 return result;
657 }
658
659 static int dst_ca_open(struct inode *inode, struct file *file)
660 {
661 dprintk(verbose, DST_CA_DEBUG, 1, " Device opened [%p] ", file);
662 try_module_get(THIS_MODULE);
663
664 return 0;
665 }
666
667 static int dst_ca_release(struct inode *inode, struct file *file)
668 {
669 dprintk(verbose, DST_CA_DEBUG, 1, " Device closed.");
670 module_put(THIS_MODULE);
671
672 return 0;
673 }
674
675 static ssize_t dst_ca_read(struct file *file, char __user *buffer, size_t length, loff_t *offset)
676 {
677 ssize_t bytes_read = 0;
678
679 dprintk(verbose, DST_CA_DEBUG, 1, " Device read.");
680
681 return bytes_read;
682 }
683
684 static ssize_t dst_ca_write(struct file *file, const char __user *buffer, size_t length, loff_t *offset)
685 {
686 dprintk(verbose, DST_CA_DEBUG, 1, " Device write.");
687
688 return 0;
689 }
690
691 static const struct file_operations dst_ca_fops = {
692 .owner = THIS_MODULE,
693 .unlocked_ioctl = dst_ca_ioctl,
694 .open = dst_ca_open,
695 .release = dst_ca_release,
696 .read = dst_ca_read,
697 .write = dst_ca_write,
698 .llseek = noop_llseek,
699 };
700
701 static struct dvb_device dvbdev_ca = {
702 .priv = NULL,
703 .users = 1,
704 .readers = 1,
705 .writers = 1,
706 .fops = &dst_ca_fops
707 };
708
709 struct dvb_device *dst_ca_attach(struct dst_state *dst, struct dvb_adapter *dvb_adapter)
710 {
711 struct dvb_device *dvbdev;
712
713 dprintk(verbose, DST_CA_ERROR, 1, "registering DST-CA device");
714 if (dvb_register_device(dvb_adapter, &dvbdev, &dvbdev_ca, dst, DVB_DEVICE_CA) == 0) {
715 dst->dst_ca = dvbdev;
716 return dst->dst_ca;
717 }
718
719 return NULL;
720 }
721
722 EXPORT_SYMBOL(dst_ca_attach);
723
724 MODULE_DESCRIPTION("DST DVB-S/T/C Combo CA driver");
725 MODULE_AUTHOR("Manu Abraham");
726 MODULE_LICENSE("GPL");
Linux with added FPC-III support