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"); 727