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 */
ca_set_slot_descr(void)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 */
ca_set_pid(void)68 static int ca_set_pid(void)
69 {
70 /* We could make this more graceful ? */
71 return -EOPNOTSUPP;
72 }
73
put_command_and_length(u8 * data,int command,int length)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
put_checksum(u8 * check_string,int length)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
dst_ci_command(struct dst_state * state,u8 * data,u8 * ca_string,u8 len,int read)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
dst_put_ci(struct dst_state * state,u8 * data,int len,u8 * ca_string,int read)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
ca_get_app_info(struct dst_state * state)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 memcpy(&state->messages[4], &state->messages[7], 5);
184
185 // Set string length and copy string
186 state->messages[9] = str_length;
187 memcpy(&state->messages[10], &state->messages[12], str_length);
188
189 return 0;
190 }
191
ca_get_ca_info(struct dst_state * state)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
ca_get_slot_caps(struct dst_state * state,struct ca_caps * p_ca_caps,void __user * arg)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 */
ca_get_slot_descr(struct dst_state * state,struct ca_msg * p_ca_message,void __user * arg)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
ca_get_slot_info(struct dst_state * state,struct ca_slot_info * p_ca_slot_info,void __user * arg)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
ca_get_message(struct dst_state * state,struct ca_msg * p_ca_message,void __user * arg)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 = [%02x %02x %02x]", p_ca_message->msg[0], p_ca_message->msg[1], p_ca_message->msg[2]);
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
347 return 0;
348 }
349
handle_dst_tag(struct dst_state * state,struct ca_msg * p_ca_message,struct ca_msg * hw_buffer,u32 length)350 static int handle_dst_tag(struct dst_state *state, struct ca_msg *p_ca_message, struct ca_msg *hw_buffer, u32 length)
351 {
352 if (state->dst_hw_cap & DST_TYPE_HAS_SESSION) {
353 hw_buffer->msg[2] = p_ca_message->msg[1]; /* MSB */
354 hw_buffer->msg[3] = p_ca_message->msg[2]; /* LSB */
355 } else {
356 if (length > 247) {
357 dprintk(verbose, DST_CA_ERROR, 1, " Message too long ! *** Bailing Out *** !");
358 return -1;
359 }
360 hw_buffer->msg[0] = (length & 0xff) + 7;
361 hw_buffer->msg[1] = 0x40;
362 hw_buffer->msg[2] = 0x03;
363 hw_buffer->msg[3] = 0x00;
364 hw_buffer->msg[4] = 0x03;
365 hw_buffer->msg[5] = length & 0xff;
366 hw_buffer->msg[6] = 0x00;
367
368 /*
369 * Need to compute length for EN50221 section 8.3.2, for the time being
370 * assuming 8.3.2 is not applicable
371 */
372 memcpy(&hw_buffer->msg[7], &p_ca_message->msg[4], length);
373 }
374
375 return 0;
376 }
377
write_to_8820(struct dst_state * state,struct ca_msg * hw_buffer,u8 length,u8 reply)378 static int write_to_8820(struct dst_state *state, struct ca_msg *hw_buffer, u8 length, u8 reply)
379 {
380 if ((dst_put_ci(state, hw_buffer->msg, length, hw_buffer->msg, reply)) < 0) {
381 dprintk(verbose, DST_CA_ERROR, 1, " DST-CI Command failed.");
382 dprintk(verbose, DST_CA_NOTICE, 1, " Resetting DST.");
383 rdc_reset_state(state);
384 return -1;
385 }
386 dprintk(verbose, DST_CA_NOTICE, 1, " DST-CI Command success.");
387
388 return 0;
389 }
390
asn_1_decode(u8 * asn_1_array)391 static u32 asn_1_decode(u8 *asn_1_array)
392 {
393 u8 length_field = 0, word_count = 0, count = 0;
394 u32 length = 0;
395
396 length_field = asn_1_array[0];
397 dprintk(verbose, DST_CA_DEBUG, 1, " Length field=[%02x]", length_field);
398 if (length_field < 0x80) {
399 length = length_field & 0x7f;
400 dprintk(verbose, DST_CA_DEBUG, 1, " Length=[%02x]\n", length);
401 } else {
402 word_count = length_field & 0x7f;
403 for (count = 0; count < word_count; count++) {
404 length = length << 8;
405 length += asn_1_array[count + 1];
406 dprintk(verbose, DST_CA_DEBUG, 1, " Length=[%04x]", length);
407 }
408 }
409 return length;
410 }
411
debug_string(u8 * msg,u32 length,u32 offset)412 static int debug_string(u8 *msg, u32 length, u32 offset)
413 {
414 u32 i;
415
416 dprintk(verbose, DST_CA_DEBUG, 0, " String=[ ");
417 for (i = offset; i < length; i++)
418 dprintk(verbose, DST_CA_DEBUG, 0, "%02x ", msg[i]);
419 dprintk(verbose, DST_CA_DEBUG, 0, "]\n");
420
421 return 0;
422 }
423
424
ca_set_pmt(struct dst_state * state,struct ca_msg * p_ca_message,struct ca_msg * hw_buffer,u8 reply,u8 query)425 static int ca_set_pmt(struct dst_state *state, struct ca_msg *p_ca_message, struct ca_msg *hw_buffer, u8 reply, u8 query)
426 {
427 u32 length = 0;
428 u8 tag_length = 8;
429
430 length = asn_1_decode(&p_ca_message->msg[3]);
431 dprintk(verbose, DST_CA_DEBUG, 1, " CA Message length=[%d]", length);
432 debug_string(&p_ca_message->msg[4], length, 0); /* length is excluding tag & length */
433
434 memset(hw_buffer->msg, '\0', length);
435 handle_dst_tag(state, p_ca_message, hw_buffer, length);
436 put_checksum(hw_buffer->msg, hw_buffer->msg[0]);
437
438 debug_string(hw_buffer->msg, (length + tag_length), 0); /* tags too */
439 write_to_8820(state, hw_buffer, (length + tag_length), reply);
440
441 return 0;
442 }
443
444
445 /* Board supports CA PMT reply ? */
dst_check_ca_pmt(struct dst_state * state,struct ca_msg * p_ca_message,struct ca_msg * hw_buffer)446 static int dst_check_ca_pmt(struct dst_state *state, struct ca_msg *p_ca_message, struct ca_msg *hw_buffer)
447 {
448 int ca_pmt_reply_test = 0;
449
450 /* Do test board */
451 /* Not there yet but soon */
452
453 /* CA PMT Reply capable */
454 if (ca_pmt_reply_test) {
455 if ((ca_set_pmt(state, p_ca_message, hw_buffer, 1, GET_REPLY)) < 0) {
456 dprintk(verbose, DST_CA_ERROR, 1, " ca_set_pmt.. failed !");
457 return -1;
458 }
459
460 /* Process CA PMT Reply */
461 /* will implement soon */
462 dprintk(verbose, DST_CA_ERROR, 1, " Not there yet");
463 }
464 /* CA PMT Reply not capable */
465 if (!ca_pmt_reply_test) {
466 if ((ca_set_pmt(state, p_ca_message, hw_buffer, 0, NO_REPLY)) < 0) {
467 dprintk(verbose, DST_CA_ERROR, 1, " ca_set_pmt.. failed !");
468 return -1;
469 }
470 dprintk(verbose, DST_CA_NOTICE, 1, " ca_set_pmt.. success !");
471 /* put a dummy message */
472
473 }
474 return 0;
475 }
476
ca_send_message(struct dst_state * state,struct ca_msg * p_ca_message,void __user * arg)477 static int ca_send_message(struct dst_state *state, struct ca_msg *p_ca_message, void __user *arg)
478 {
479 int i = 0;
480 unsigned int ca_message_header_len;
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 ca_message_header_len = p_ca_message->length; /* Restore it back when you are done */
500 /* EN50221 tag */
501 command = 0;
502
503 for (i = 0; i < 3; i++) {
504 command = command | p_ca_message->msg[i];
505 if (i < 2)
506 command = command << 8;
507 }
508 dprintk(verbose, DST_CA_DEBUG, 1, " Command=[0x%x]\n", command);
509
510 switch (command) {
511 case CA_PMT:
512 dprintk(verbose, DST_CA_DEBUG, 1, "Command = SEND_CA_PMT");
513 if ((ca_set_pmt(state, p_ca_message, hw_buffer, 0, 0)) < 0) { // code simplification started
514 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_PMT Failed !");
515 result = -1;
516 goto free_mem_and_exit;
517 }
518 dprintk(verbose, DST_CA_INFO, 1, " -->CA_PMT Success !");
519 break;
520 case CA_PMT_REPLY:
521 dprintk(verbose, DST_CA_INFO, 1, "Command = CA_PMT_REPLY");
522 /* Have to handle the 2 basic types of cards here */
523 if ((dst_check_ca_pmt(state, p_ca_message, hw_buffer)) < 0) {
524 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_PMT_REPLY Failed !");
525 result = -1;
526 goto free_mem_and_exit;
527 }
528 dprintk(verbose, DST_CA_INFO, 1, " -->CA_PMT_REPLY Success !");
529 break;
530 case CA_APP_INFO_ENQUIRY: // only for debugging
531 dprintk(verbose, DST_CA_INFO, 1, " Getting Cam Application information");
532
533 if ((ca_get_app_info(state)) < 0) {
534 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_APP_INFO_ENQUIRY Failed !");
535 result = -1;
536 goto free_mem_and_exit;
537 }
538 dprintk(verbose, DST_CA_INFO, 1, " -->CA_APP_INFO_ENQUIRY Success !");
539 break;
540 case CA_INFO_ENQUIRY:
541 dprintk(verbose, DST_CA_INFO, 1, " Getting CA Information");
542
543 if ((ca_get_ca_info(state)) < 0) {
544 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_INFO_ENQUIRY Failed !");
545 result = -1;
546 goto free_mem_and_exit;
547 }
548 dprintk(verbose, DST_CA_INFO, 1, " -->CA_INFO_ENQUIRY Success !");
549 break;
550 }
551 }
552 free_mem_and_exit:
553 kfree (hw_buffer);
554
555 return result;
556 }
557
dst_ca_ioctl(struct file * file,unsigned int cmd,unsigned long ioctl_arg)558 static long dst_ca_ioctl(struct file *file, unsigned int cmd, unsigned long ioctl_arg)
559 {
560 struct dvb_device *dvbdev;
561 struct dst_state *state;
562 struct ca_slot_info *p_ca_slot_info;
563 struct ca_caps *p_ca_caps;
564 struct ca_msg *p_ca_message;
565 void __user *arg = (void __user *)ioctl_arg;
566 int result = 0;
567
568 mutex_lock(&dst_ca_mutex);
569 dvbdev = file->private_data;
570 state = (struct dst_state *)dvbdev->priv;
571 p_ca_message = kmalloc(sizeof (struct ca_msg), GFP_KERNEL);
572 p_ca_slot_info = kmalloc(sizeof (struct ca_slot_info), GFP_KERNEL);
573 p_ca_caps = kmalloc(sizeof (struct ca_caps), GFP_KERNEL);
574 if (!p_ca_message || !p_ca_slot_info || !p_ca_caps) {
575 dprintk(verbose, DST_CA_ERROR, 1, " Memory allocation failure");
576 result = -ENOMEM;
577 goto free_mem_and_exit;
578 }
579
580 /* We have now only the standard ioctl's, the driver is upposed to handle internals. */
581 switch (cmd) {
582 case CA_SEND_MSG:
583 dprintk(verbose, DST_CA_INFO, 1, " Sending message");
584 if ((ca_send_message(state, p_ca_message, arg)) < 0) {
585 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_SEND_MSG Failed !");
586 result = -1;
587 goto free_mem_and_exit;
588 }
589 break;
590 case CA_GET_MSG:
591 dprintk(verbose, DST_CA_INFO, 1, " Getting message");
592 if ((ca_get_message(state, p_ca_message, arg)) < 0) {
593 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_GET_MSG Failed !");
594 result = -1;
595 goto free_mem_and_exit;
596 }
597 dprintk(verbose, DST_CA_INFO, 1, " -->CA_GET_MSG Success !");
598 break;
599 case CA_RESET:
600 dprintk(verbose, DST_CA_ERROR, 1, " Resetting DST");
601 dst_error_bailout(state);
602 msleep(4000);
603 break;
604 case CA_GET_SLOT_INFO:
605 dprintk(verbose, DST_CA_INFO, 1, " Getting Slot info");
606 if ((ca_get_slot_info(state, p_ca_slot_info, arg)) < 0) {
607 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_GET_SLOT_INFO Failed !");
608 result = -1;
609 goto free_mem_and_exit;
610 }
611 dprintk(verbose, DST_CA_INFO, 1, " -->CA_GET_SLOT_INFO Success !");
612 break;
613 case CA_GET_CAP:
614 dprintk(verbose, DST_CA_INFO, 1, " Getting Slot capabilities");
615 if ((ca_get_slot_caps(state, p_ca_caps, arg)) < 0) {
616 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_GET_CAP Failed !");
617 result = -1;
618 goto free_mem_and_exit;
619 }
620 dprintk(verbose, DST_CA_INFO, 1, " -->CA_GET_CAP Success !");
621 break;
622 case CA_GET_DESCR_INFO:
623 dprintk(verbose, DST_CA_INFO, 1, " Getting descrambler description");
624 if ((ca_get_slot_descr(state, p_ca_message, arg)) < 0) {
625 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_GET_DESCR_INFO Failed !");
626 result = -1;
627 goto free_mem_and_exit;
628 }
629 dprintk(verbose, DST_CA_INFO, 1, " -->CA_GET_DESCR_INFO Success !");
630 break;
631 case CA_SET_DESCR:
632 dprintk(verbose, DST_CA_INFO, 1, " Setting descrambler");
633 if ((ca_set_slot_descr()) < 0) {
634 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_SET_DESCR Failed !");
635 result = -1;
636 goto free_mem_and_exit;
637 }
638 dprintk(verbose, DST_CA_INFO, 1, " -->CA_SET_DESCR Success !");
639 break;
640 case CA_SET_PID:
641 dprintk(verbose, DST_CA_INFO, 1, " Setting PID");
642 if ((ca_set_pid()) < 0) {
643 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_SET_PID Failed !");
644 result = -1;
645 goto free_mem_and_exit;
646 }
647 dprintk(verbose, DST_CA_INFO, 1, " -->CA_SET_PID Success !");
648 default:
649 result = -EOPNOTSUPP;
650 };
651 free_mem_and_exit:
652 kfree (p_ca_message);
653 kfree (p_ca_slot_info);
654 kfree (p_ca_caps);
655
656 mutex_unlock(&dst_ca_mutex);
657 return result;
658 }
659
dst_ca_open(struct inode * inode,struct file * file)660 static int dst_ca_open(struct inode *inode, struct file *file)
661 {
662 dprintk(verbose, DST_CA_DEBUG, 1, " Device opened [%p] ", file);
663 try_module_get(THIS_MODULE);
664
665 return 0;
666 }
667
dst_ca_release(struct inode * inode,struct file * file)668 static int dst_ca_release(struct inode *inode, struct file *file)
669 {
670 dprintk(verbose, DST_CA_DEBUG, 1, " Device closed.");
671 module_put(THIS_MODULE);
672
673 return 0;
674 }
675
dst_ca_read(struct file * file,char __user * buffer,size_t length,loff_t * offset)676 static ssize_t dst_ca_read(struct file *file, char __user *buffer, size_t length, loff_t *offset)
677 {
678 ssize_t bytes_read = 0;
679
680 dprintk(verbose, DST_CA_DEBUG, 1, " Device read.");
681
682 return bytes_read;
683 }
684
dst_ca_write(struct file * file,const char __user * buffer,size_t length,loff_t * offset)685 static ssize_t dst_ca_write(struct file *file, const char __user *buffer, size_t length, loff_t *offset)
686 {
687 dprintk(verbose, DST_CA_DEBUG, 1, " Device write.");
688
689 return 0;
690 }
691
692 static const struct file_operations dst_ca_fops = {
693 .owner = THIS_MODULE,
694 .unlocked_ioctl = dst_ca_ioctl,
695 .open = dst_ca_open,
696 .release = dst_ca_release,
697 .read = dst_ca_read,
698 .write = dst_ca_write,
699 .llseek = noop_llseek,
700 };
701
702 static struct dvb_device dvbdev_ca = {
703 .priv = NULL,
704 .users = 1,
705 .readers = 1,
706 .writers = 1,
707 .fops = &dst_ca_fops
708 };
709
dst_ca_attach(struct dst_state * dst,struct dvb_adapter * dvb_adapter)710 struct dvb_device *dst_ca_attach(struct dst_state *dst, struct dvb_adapter *dvb_adapter)
711 {
712 struct dvb_device *dvbdev;
713
714 dprintk(verbose, DST_CA_ERROR, 1, "registering DST-CA device");
715 if (dvb_register_device(dvb_adapter, &dvbdev, &dvbdev_ca, dst, DVB_DEVICE_CA) == 0) {
716 dst->dst_ca = dvbdev;
717 return dst->dst_ca;
718 }
719
720 return NULL;
721 }
722
723 EXPORT_SYMBOL(dst_ca_attach);
724
725 MODULE_DESCRIPTION("DST DVB-S/T/C Combo CA driver");
726 MODULE_AUTHOR("Manu Abraham");
727 MODULE_LICENSE("GPL");
728