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