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Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux...
[linux/fpc-iii.git] / drivers / media / pci / bt8xx / dst_ca.c
blobda8b414fd824ca5541ab1f298d42f954576ab311
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 dprintk(verbose, DST_CA_NOTICE, 1, " Message = [%*ph]",
324 3, p_ca_message->msg);
325
326 for (i = 0; i < 3; i++) {
327 command = command | p_ca_message->msg[i];
328 if (i < 2)
329 command = command << 8;
330 }
331 dprintk(verbose, DST_CA_NOTICE, 1, " Command=[0x%x]", command);
332
333 switch (command) {
334 case CA_APP_INFO:
335 memcpy(p_ca_message->msg, state->messages, 128);
336 if (copy_to_user(arg, p_ca_message, sizeof (struct ca_msg)) )
337 return -EFAULT;
338 break;
339 case CA_INFO:
340 memcpy(p_ca_message->msg, state->messages, 128);
341 if (copy_to_user(arg, p_ca_message, sizeof (struct ca_msg)) )
342 return -EFAULT;
343 break;
344 }
345
346 return 0;
347 }
348
349 static int handle_dst_tag(struct dst_state *state, struct ca_msg *p_ca_message, struct ca_msg *hw_buffer, u32 length)
350 {
351 if (state->dst_hw_cap & DST_TYPE_HAS_SESSION) {
352 hw_buffer->msg[2] = p_ca_message->msg[1]; /* MSB */
353 hw_buffer->msg[3] = p_ca_message->msg[2]; /* LSB */
354 } else {
355 if (length > 247) {
356 dprintk(verbose, DST_CA_ERROR, 1, " Message too long ! *** Bailing Out *** !");
357 return -1;
358 }
359 hw_buffer->msg[0] = (length & 0xff) + 7;
360 hw_buffer->msg[1] = 0x40;
361 hw_buffer->msg[2] = 0x03;
362 hw_buffer->msg[3] = 0x00;
363 hw_buffer->msg[4] = 0x03;
364 hw_buffer->msg[5] = length & 0xff;
365 hw_buffer->msg[6] = 0x00;
366
367 /*
368 * Need to compute length for EN50221 section 8.3.2, for the time being
369 * assuming 8.3.2 is not applicable
370 */
371 memcpy(&hw_buffer->msg[7], &p_ca_message->msg[4], length);
372 }
373
374 return 0;
375 }
376
377 static int write_to_8820(struct dst_state *state, struct ca_msg *hw_buffer, u8 length, u8 reply)
378 {
379 if ((dst_put_ci(state, hw_buffer->msg, length, hw_buffer->msg, reply)) < 0) {
380 dprintk(verbose, DST_CA_ERROR, 1, " DST-CI Command failed.");
381 dprintk(verbose, DST_CA_NOTICE, 1, " Resetting DST.");
382 rdc_reset_state(state);
383 return -1;
384 }
385 dprintk(verbose, DST_CA_NOTICE, 1, " DST-CI Command success.");
386
387 return 0;
388 }
389
390 static u32 asn_1_decode(u8 *asn_1_array)
391 {
392 u8 length_field = 0, word_count = 0, count = 0;
393 u32 length = 0;
394
395 length_field = asn_1_array[0];
396 dprintk(verbose, DST_CA_DEBUG, 1, " Length field=[%02x]", length_field);
397 if (length_field < 0x80) {
398 length = length_field & 0x7f;
399 dprintk(verbose, DST_CA_DEBUG, 1, " Length=[%02x]\n", length);
400 } else {
401 word_count = length_field & 0x7f;
402 for (count = 0; count < word_count; count++) {
403 length = length << 8;
404 length += asn_1_array[count + 1];
405 dprintk(verbose, DST_CA_DEBUG, 1, " Length=[%04x]", length);
406 }
407 }
408 return length;
409 }
410
411 static int debug_string(u8 *msg, u32 length, u32 offset)
412 {
413 u32 i;
414
415 dprintk(verbose, DST_CA_DEBUG, 0, " String=[ ");
416 for (i = offset; i < length; i++)
417 dprintk(verbose, DST_CA_DEBUG, 0, "%02x ", msg[i]);
418 dprintk(verbose, DST_CA_DEBUG, 0, "]\n");
419
420 return 0;
421 }
422
423
424 static int ca_set_pmt(struct dst_state *state, struct ca_msg *p_ca_message, struct ca_msg *hw_buffer, u8 reply, u8 query)
425 {
426 u32 length = 0;
427 u8 tag_length = 8;
428
429 length = asn_1_decode(&p_ca_message->msg[3]);
430 dprintk(verbose, DST_CA_DEBUG, 1, " CA Message length=[%d]", length);
431 debug_string(&p_ca_message->msg[4], length, 0); /* length is excluding tag & length */
432
433 memset(hw_buffer->msg, '\0', length);
434 handle_dst_tag(state, p_ca_message, hw_buffer, length);
435 put_checksum(hw_buffer->msg, hw_buffer->msg[0]);
436
437 debug_string(hw_buffer->msg, (length + tag_length), 0); /* tags too */
438 write_to_8820(state, hw_buffer, (length + tag_length), reply);
439
440 return 0;
441 }
442
443
444 /* Board supports CA PMT reply ? */
445 static int dst_check_ca_pmt(struct dst_state *state, struct ca_msg *p_ca_message, struct ca_msg *hw_buffer)
446 {
447 int ca_pmt_reply_test = 0;
448
449 /* Do test board */
450 /* Not there yet but soon */
451
452 /* CA PMT Reply capable */
453 if (ca_pmt_reply_test) {
454 if ((ca_set_pmt(state, p_ca_message, hw_buffer, 1, GET_REPLY)) < 0) {
455 dprintk(verbose, DST_CA_ERROR, 1, " ca_set_pmt.. failed !");
456 return -1;
457 }
458
459 /* Process CA PMT Reply */
460 /* will implement soon */
461 dprintk(verbose, DST_CA_ERROR, 1, " Not there yet");
462 }
463 /* CA PMT Reply not capable */
464 if (!ca_pmt_reply_test) {
465 if ((ca_set_pmt(state, p_ca_message, hw_buffer, 0, NO_REPLY)) < 0) {
466 dprintk(verbose, DST_CA_ERROR, 1, " ca_set_pmt.. failed !");
467 return -1;
468 }
469 dprintk(verbose, DST_CA_NOTICE, 1, " ca_set_pmt.. success !");
470 /* put a dummy message */
471
472 }
473 return 0;
474 }
475
476 static int ca_send_message(struct dst_state *state, struct ca_msg *p_ca_message, void __user *arg)
477 {
478 int i = 0;
479
480 u32 command = 0;
481 struct ca_msg *hw_buffer;
482 int result = 0;
483
484 if ((hw_buffer = kmalloc(sizeof (struct ca_msg), GFP_KERNEL)) == NULL) {
485 dprintk(verbose, DST_CA_ERROR, 1, " Memory allocation failure");
486 return -ENOMEM;
487 }
488 dprintk(verbose, DST_CA_DEBUG, 1, " ");
489
490 if (copy_from_user(p_ca_message, arg, sizeof (struct ca_msg))) {
491 result = -EFAULT;
492 goto free_mem_and_exit;
493 }
494
495 /* EN50221 tag */
496 command = 0;
497
498 for (i = 0; i < 3; i++) {
499 command = command | p_ca_message->msg[i];
500 if (i < 2)
501 command = command << 8;
502 }
503 dprintk(verbose, DST_CA_DEBUG, 1, " Command=[0x%x]\n", command);
504
505 switch (command) {
506 case CA_PMT:
507 dprintk(verbose, DST_CA_DEBUG, 1, "Command = SEND_CA_PMT");
508 if ((ca_set_pmt(state, p_ca_message, hw_buffer, 0, 0)) < 0) { // code simplification started
509 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_PMT Failed !");
510 result = -1;
511 goto free_mem_and_exit;
512 }
513 dprintk(verbose, DST_CA_INFO, 1, " -->CA_PMT Success !");
514 break;
515 case CA_PMT_REPLY:
516 dprintk(verbose, DST_CA_INFO, 1, "Command = CA_PMT_REPLY");
517 /* Have to handle the 2 basic types of cards here */
518 if ((dst_check_ca_pmt(state, p_ca_message, hw_buffer)) < 0) {
519 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_PMT_REPLY Failed !");
520 result = -1;
521 goto free_mem_and_exit;
522 }
523 dprintk(verbose, DST_CA_INFO, 1, " -->CA_PMT_REPLY Success !");
524 break;
525 case CA_APP_INFO_ENQUIRY: // only for debugging
526 dprintk(verbose, DST_CA_INFO, 1, " Getting Cam Application information");
527
528 if ((ca_get_app_info(state)) < 0) {
529 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_APP_INFO_ENQUIRY Failed !");
530 result = -1;
531 goto free_mem_and_exit;
532 }
533 dprintk(verbose, DST_CA_INFO, 1, " -->CA_APP_INFO_ENQUIRY Success !");
534 break;
535 case CA_INFO_ENQUIRY:
536 dprintk(verbose, DST_CA_INFO, 1, " Getting CA Information");
537
538 if ((ca_get_ca_info(state)) < 0) {
539 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_INFO_ENQUIRY Failed !");
540 result = -1;
541 goto free_mem_and_exit;
542 }
543 dprintk(verbose, DST_CA_INFO, 1, " -->CA_INFO_ENQUIRY Success !");
544 break;
545 }
546
547 free_mem_and_exit:
548 kfree (hw_buffer);
549
550 return result;
551 }
552
553 static long dst_ca_ioctl(struct file *file, unsigned int cmd, unsigned long ioctl_arg)
554 {
555 struct dvb_device *dvbdev;
556 struct dst_state *state;
557 struct ca_slot_info *p_ca_slot_info;
558 struct ca_caps *p_ca_caps;
559 struct ca_msg *p_ca_message;
560 void __user *arg = (void __user *)ioctl_arg;
561 int result = 0;
562
563 mutex_lock(&dst_ca_mutex);
564 dvbdev = file->private_data;
565 state = (struct dst_state *)dvbdev->priv;
566 p_ca_message = kmalloc(sizeof (struct ca_msg), GFP_KERNEL);
567 p_ca_slot_info = kmalloc(sizeof (struct ca_slot_info), GFP_KERNEL);
568 p_ca_caps = kmalloc(sizeof (struct ca_caps), GFP_KERNEL);
569 if (!p_ca_message || !p_ca_slot_info || !p_ca_caps) {
570 dprintk(verbose, DST_CA_ERROR, 1, " Memory allocation failure");
571 result = -ENOMEM;
572 goto free_mem_and_exit;
573 }
574
575 /* We have now only the standard ioctl's, the driver is upposed to handle internals. */
576 switch (cmd) {
577 case CA_SEND_MSG:
578 dprintk(verbose, DST_CA_INFO, 1, " Sending message");
579 if ((ca_send_message(state, p_ca_message, arg)) < 0) {
580 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_SEND_MSG Failed !");
581 result = -1;
582 goto free_mem_and_exit;
583 }
584 break;
585 case CA_GET_MSG:
586 dprintk(verbose, DST_CA_INFO, 1, " Getting message");
587 if ((ca_get_message(state, p_ca_message, arg)) < 0) {
588 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_GET_MSG Failed !");
589 result = -1;
590 goto free_mem_and_exit;
591 }
592 dprintk(verbose, DST_CA_INFO, 1, " -->CA_GET_MSG Success !");
593 break;
594 case CA_RESET:
595 dprintk(verbose, DST_CA_ERROR, 1, " Resetting DST");
596 dst_error_bailout(state);
597 msleep(4000);
598 break;
599 case CA_GET_SLOT_INFO:
600 dprintk(verbose, DST_CA_INFO, 1, " Getting Slot info");
601 if ((ca_get_slot_info(state, p_ca_slot_info, arg)) < 0) {
602 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_GET_SLOT_INFO Failed !");
603 result = -1;
604 goto free_mem_and_exit;
605 }
606 dprintk(verbose, DST_CA_INFO, 1, " -->CA_GET_SLOT_INFO Success !");
607 break;
608 case CA_GET_CAP:
609 dprintk(verbose, DST_CA_INFO, 1, " Getting Slot capabilities");
610 if ((ca_get_slot_caps(state, p_ca_caps, arg)) < 0) {
611 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_GET_CAP Failed !");
612 result = -1;
613 goto free_mem_and_exit;
614 }
615 dprintk(verbose, DST_CA_INFO, 1, " -->CA_GET_CAP Success !");
616 break;
617 case CA_GET_DESCR_INFO:
618 dprintk(verbose, DST_CA_INFO, 1, " Getting descrambler description");
619 if ((ca_get_slot_descr(state, p_ca_message, arg)) < 0) {
620 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_GET_DESCR_INFO Failed !");
621 result = -1;
622 goto free_mem_and_exit;
623 }
624 dprintk(verbose, DST_CA_INFO, 1, " -->CA_GET_DESCR_INFO Success !");
625 break;
626 case CA_SET_DESCR:
627 dprintk(verbose, DST_CA_INFO, 1, " Setting descrambler");
628 if ((ca_set_slot_descr()) < 0) {
629 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_SET_DESCR Failed !");
630 result = -1;
631 goto free_mem_and_exit;
632 }
633 dprintk(verbose, DST_CA_INFO, 1, " -->CA_SET_DESCR Success !");
634 break;
635 case CA_SET_PID:
636 dprintk(verbose, DST_CA_INFO, 1, " Setting PID");
637 if ((ca_set_pid()) < 0) {
638 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_SET_PID Failed !");
639 result = -1;
640 goto free_mem_and_exit;
641 }
642 dprintk(verbose, DST_CA_INFO, 1, " -->CA_SET_PID Success !");
643 default:
644 result = -EOPNOTSUPP;
645 }
646 free_mem_and_exit:
647 kfree (p_ca_message);
648 kfree (p_ca_slot_info);
649 kfree (p_ca_caps);
650
651 mutex_unlock(&dst_ca_mutex);
652 return result;
653 }
654
655 static int dst_ca_open(struct inode *inode, struct file *file)
656 {
657 dprintk(verbose, DST_CA_DEBUG, 1, " Device opened [%p] ", file);
658 try_module_get(THIS_MODULE);
659
660 return 0;
661 }
662
663 static int dst_ca_release(struct inode *inode, struct file *file)
664 {
665 dprintk(verbose, DST_CA_DEBUG, 1, " Device closed.");
666 module_put(THIS_MODULE);
667
668 return 0;
669 }
670
671 static ssize_t dst_ca_read(struct file *file, char __user *buffer, size_t length, loff_t *offset)
672 {
673 dprintk(verbose, DST_CA_DEBUG, 1, " Device read.");
674
675 return 0;
676 }
677
678 static ssize_t dst_ca_write(struct file *file, const char __user *buffer, size_t length, loff_t *offset)
679 {
680 dprintk(verbose, DST_CA_DEBUG, 1, " Device write.");
681
682 return 0;
683 }
684
685 static const struct file_operations dst_ca_fops = {
686 .owner = THIS_MODULE,
687 .unlocked_ioctl = dst_ca_ioctl,
688 .open = dst_ca_open,
689 .release = dst_ca_release,
690 .read = dst_ca_read,
691 .write = dst_ca_write,
692 .llseek = noop_llseek,
693 };
694
695 static struct dvb_device dvbdev_ca = {
696 .priv = NULL,
697 .users = 1,
698 .readers = 1,
699 .writers = 1,
700 .fops = &dst_ca_fops
701 };
702
703 struct dvb_device *dst_ca_attach(struct dst_state *dst, struct dvb_adapter *dvb_adapter)
704 {
705 struct dvb_device *dvbdev;
706
707 dprintk(verbose, DST_CA_ERROR, 1, "registering DST-CA device");
708 if (dvb_register_device(dvb_adapter, &dvbdev, &dvbdev_ca, dst,
709 DVB_DEVICE_CA, 0) == 0) {
710 dst->dst_ca = dvbdev;
711 return dst->dst_ca;
712 }
713
714 return NULL;
715 }
716
717 EXPORT_SYMBOL(dst_ca_attach);
718
719 MODULE_DESCRIPTION("DST DVB-S/T/C Combo CA driver");
720 MODULE_AUTHOR("Manu Abraham");
721 MODULE_LICENSE("GPL");
Linux with added FPC-III support