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/smp_lock.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 55static unsigned int verbose = 5; 56module_param(verbose, int, 0644); 57MODULE_PARM_DESC(verbose, "verbose startup messages, default is 1 (yes)"); 58 59/* Need some more work */ 60static int ca_set_slot_descr(void) 61{ 62 /* We could make this more graceful ? */ 63 return -EOPNOTSUPP; 64} 65 66/* Need some more work */ 67static int ca_set_pid(void) 68{ 69 /* We could make this more graceful ? */ 70 return -EOPNOTSUPP; 71} 72 73static void put_command_and_length(u8 *data, int command, int length) 74{ 75 data[0] = (command >> 16) & 0xff; 76 data[1] = (command >> 8) & 0xff; 77 data[2] = command & 0xff; 78 data[3] = length; 79} 80 81static void put_checksum(u8 *check_string, int length) 82{ 83 dprintk(verbose, DST_CA_DEBUG, 1, " Computing string checksum."); 84 dprintk(verbose, DST_CA_DEBUG, 1, " -> string length : 0x%02x", length); 85 check_string[length] = dst_check_sum (check_string, length); 86 dprintk(verbose, DST_CA_DEBUG, 1, " -> checksum : 0x%02x", check_string[length]); 87} 88 89static int dst_ci_command(struct dst_state* state, u8 * data, u8 *ca_string, u8 len, int read) 90{ 91 u8 reply; 92 93 mutex_lock(&state->dst_mutex); 94 dst_comm_init(state); 95 msleep(65); 96 97 if (write_dst(state, data, len)) { 98 dprintk(verbose, DST_CA_INFO, 1, " Write not successful, trying to recover"); 99 dst_error_recovery(state); 100 goto error; 101 } 102 if ((dst_pio_disable(state)) < 0) { 103 dprintk(verbose, DST_CA_ERROR, 1, " DST PIO disable failed."); 104 goto error; 105 } 106 if (read_dst(state, &reply, GET_ACK) < 0) { 107 dprintk(verbose, DST_CA_INFO, 1, " Read not successful, trying to recover"); 108 dst_error_recovery(state); 109 goto error; 110 } 111 if (read) { 112 if (! dst_wait_dst_ready(state, LONG_DELAY)) { 113 dprintk(verbose, DST_CA_NOTICE, 1, " 8820 not ready"); 114 goto error; 115 } 116 if (read_dst(state, ca_string, 128) < 0) { /* Try to make this dynamic */ 117 dprintk(verbose, DST_CA_INFO, 1, " Read not successful, trying to recover"); 118 dst_error_recovery(state); 119 goto error; 120 } 121 } 122 mutex_unlock(&state->dst_mutex); 123 return 0; 124 125error: 126 mutex_unlock(&state->dst_mutex); 127 return -EIO; 128} 129 130 131static int dst_put_ci(struct dst_state *state, u8 *data, int len, u8 *ca_string, int read) 132{ 133 u8 dst_ca_comm_err = 0; 134 135 while (dst_ca_comm_err < RETRIES) { 136 dprintk(verbose, DST_CA_NOTICE, 1, " Put Command"); 137 if (dst_ci_command(state, data, ca_string, len, read)) { // If error 138 dst_error_recovery(state); 139 dst_ca_comm_err++; // work required here. 140 } else { 141 break; 142 } 143 } 144 145 if(dst_ca_comm_err == RETRIES) 146 return -1; 147 148 return 0; 149} 150 151 152 153static int ca_get_app_info(struct dst_state *state) 154{ 155 int length, str_length; 156 static u8 command[8] = {0x07, 0x40, 0x01, 0x00, 0x01, 0x00, 0x00, 0xff}; 157 158 put_checksum(&command[0], command[0]); 159 if ((dst_put_ci(state, command, sizeof(command), state->messages, GET_REPLY)) < 0) { 160 dprintk(verbose, DST_CA_ERROR, 1, " -->dst_put_ci FAILED !"); 161 return -1; 162 } 163 dprintk(verbose, DST_CA_INFO, 1, " -->dst_put_ci SUCCESS !"); 164 dprintk(verbose, DST_CA_INFO, 1, " ================================ CI Module Application Info ======================================"); 165 dprintk(verbose, DST_CA_INFO, 1, " Application Type=[%d], Application Vendor=[%d], Vendor Code=[%d]\n%s: Application info=[%s]", 166 state->messages[7], (state->messages[8] << 8) | state->messages[9], 167 (state->messages[10] << 8) | state->messages[11], __func__, (char *)(&state->messages[12])); 168 dprintk(verbose, DST_CA_INFO, 1, " =================================================================================================="); 169 170 // Transform dst message to correct application_info message 171 length = state->messages[5]; 172 str_length = length - 6; 173 if (str_length < 0) { 174 str_length = 0; 175 dprintk(verbose, DST_CA_ERROR, 1, "Invalid string length returned in ca_get_app_info(). Recovering."); 176 } 177 178 // First, the command and length fields 179 put_command_and_length(&state->messages[0], CA_APP_INFO, length); 180 181 // Copy application_type, application_manufacturer and manufacturer_code 182 memcpy(&state->messages[4], &state->messages[7], 5); 183 184 // Set string length and copy string 185 state->messages[9] = str_length; 186 memcpy(&state->messages[10], &state->messages[12], str_length); 187 188 return 0; 189} 190 191static int ca_get_ca_info(struct dst_state *state) 192{ 193 int srcPtr, dstPtr, i, num_ids; 194 static u8 slot_command[8] = {0x07, 0x40, 0x00, 0x00, 0x02, 0x00, 0x00, 0xff}; 195 const int in_system_id_pos = 8, out_system_id_pos = 4, in_num_ids_pos = 7; 196 197 put_checksum(&slot_command[0], slot_command[0]); 198 if ((dst_put_ci(state, slot_command, sizeof (slot_command), state->messages, GET_REPLY)) < 0) { 199 dprintk(verbose, DST_CA_ERROR, 1, " -->dst_put_ci FAILED !"); 200 return -1; 201 } 202 dprintk(verbose, DST_CA_INFO, 1, " -->dst_put_ci SUCCESS !"); 203 204 // Print raw data 205 dprintk(verbose, DST_CA_INFO, 0, " DST data = ["); 206 for (i = 0; i < state->messages[0] + 1; i++) { 207 dprintk(verbose, DST_CA_INFO, 0, " 0x%02x", state->messages[i]); 208 } 209 dprintk(verbose, DST_CA_INFO, 0, "]\n"); 210 211 // Set the command and length of the output 212 num_ids = state->messages[in_num_ids_pos]; 213 if (num_ids >= 100) { 214 num_ids = 100; 215 dprintk(verbose, DST_CA_ERROR, 1, "Invalid number of ids (>100). Recovering."); 216 } 217 put_command_and_length(&state->messages[0], CA_INFO, num_ids * 2); 218 219 dprintk(verbose, DST_CA_INFO, 0, " CA_INFO = ["); 220 srcPtr = in_system_id_pos; 221 dstPtr = out_system_id_pos; 222 for(i = 0; i < num_ids; i++) { 223 dprintk(verbose, DST_CA_INFO, 0, " 0x%02x%02x", state->messages[srcPtr + 0], state->messages[srcPtr + 1]); 224 // Append to output 225 state->messages[dstPtr + 0] = state->messages[srcPtr + 0]; 226 state->messages[dstPtr + 1] = state->messages[srcPtr + 1]; 227 srcPtr += 2; 228 dstPtr += 2; 229 } 230 dprintk(verbose, DST_CA_INFO, 0, "]\n"); 231 232 return 0; 233} 234 235static int ca_get_slot_caps(struct dst_state *state, struct ca_caps *p_ca_caps, void __user *arg) 236{ 237 int i; 238 u8 slot_cap[256]; 239 static u8 slot_command[8] = {0x07, 0x40, 0x02, 0x00, 0x02, 0x00, 0x00, 0xff}; 240 241 put_checksum(&slot_command[0], slot_command[0]); 242 if ((dst_put_ci(state, slot_command, sizeof (slot_command), slot_cap, GET_REPLY)) < 0) { 243 dprintk(verbose, DST_CA_ERROR, 1, " -->dst_put_ci FAILED !"); 244 return -1; 245 } 246 dprintk(verbose, DST_CA_NOTICE, 1, " -->dst_put_ci SUCCESS !"); 247 248 /* Will implement the rest soon */ 249 250 dprintk(verbose, DST_CA_INFO, 1, " Slot cap = [%d]", slot_cap[7]); 251 dprintk(verbose, DST_CA_INFO, 0, "===================================\n"); 252 for (i = 0; i < slot_cap[0] + 1; i++) 253 dprintk(verbose, DST_CA_INFO, 0, " %d", slot_cap[i]); 254 dprintk(verbose, DST_CA_INFO, 0, "\n"); 255 256 p_ca_caps->slot_num = 1; 257 p_ca_caps->slot_type = 1; 258 p_ca_caps->descr_num = slot_cap[7]; 259 p_ca_caps->descr_type = 1; 260 261 if (copy_to_user(arg, p_ca_caps, sizeof (struct ca_caps))) 262 return -EFAULT; 263 264 return 0; 265} 266 267/* Need some more work */ 268static int ca_get_slot_descr(struct dst_state *state, struct ca_msg *p_ca_message, void __user *arg) 269{ 270 return -EOPNOTSUPP; 271} 272 273 274static int ca_get_slot_info(struct dst_state *state, struct ca_slot_info *p_ca_slot_info, void __user *arg) 275{ 276 int i; 277 static u8 slot_command[8] = {0x00, 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff}; 278 279 u8 *slot_info = state->messages; 280 281 put_checksum(&slot_command[0], 7); 282 if ((dst_put_ci(state, slot_command, sizeof (slot_command), slot_info, GET_REPLY)) < 0) { 283 dprintk(verbose, DST_CA_ERROR, 1, " -->dst_put_ci FAILED !"); 284 return -1; 285 } 286 dprintk(verbose, DST_CA_INFO, 1, " -->dst_put_ci SUCCESS !"); 287 288 /* Will implement the rest soon */ 289 290 dprintk(verbose, DST_CA_INFO, 1, " Slot info = [%d]", slot_info[3]); 291 dprintk(verbose, DST_CA_INFO, 0, "===================================\n"); 292 for (i = 0; i < 8; i++) 293 dprintk(verbose, DST_CA_INFO, 0, " %d", slot_info[i]); 294 dprintk(verbose, DST_CA_INFO, 0, "\n"); 295 296 if (slot_info[4] & 0x80) { 297 p_ca_slot_info->flags = CA_CI_MODULE_PRESENT; 298 p_ca_slot_info->num = 1; 299 p_ca_slot_info->type = CA_CI; 300 } else if (slot_info[4] & 0x40) { 301 p_ca_slot_info->flags = CA_CI_MODULE_READY; 302 p_ca_slot_info->num = 1; 303 p_ca_slot_info->type = CA_CI; 304 } else 305 p_ca_slot_info->flags = 0; 306 307 if (copy_to_user(arg, p_ca_slot_info, sizeof (struct ca_slot_info))) 308 return -EFAULT; 309 310 return 0; 311} 312 313 314static int ca_get_message(struct dst_state *state, struct ca_msg *p_ca_message, void __user *arg) 315{ 316 u8 i = 0; 317 u32 command = 0; 318 319 if (copy_from_user(p_ca_message, arg, sizeof (struct ca_msg))) 320 return -EFAULT; 321 322 if (p_ca_message->msg) { 323 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]); 324 325 for (i = 0; i < 3; i++) { 326 command = command | p_ca_message->msg[i]; 327 if (i < 2) 328 command = command << 8; 329 } 330 dprintk(verbose, DST_CA_NOTICE, 1, " Command=[0x%x]", command); 331 332 switch (command) { 333 case CA_APP_INFO: 334 memcpy(p_ca_message->msg, state->messages, 128); 335 if (copy_to_user(arg, p_ca_message, sizeof (struct ca_msg)) ) 336 return -EFAULT; 337 break; 338 case CA_INFO: 339 memcpy(p_ca_message->msg, state->messages, 128); 340 if (copy_to_user(arg, p_ca_message, sizeof (struct ca_msg)) ) 341 return -EFAULT; 342 break; 343 } 344 } 345 346 return 0; 347} 348 349static 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 377static 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 390static 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 411static 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 424static 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 ? */ 445static 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 476static int ca_send_message(struct dst_state *state, struct ca_msg *p_ca_message, void __user *arg) 477{ 478 int i = 0; 479 unsigned int ca_message_header_len; 480 481 u32 command = 0; 482 struct ca_msg *hw_buffer; 483 int result = 0; 484 485 if ((hw_buffer = kmalloc(sizeof (struct ca_msg), GFP_KERNEL)) == NULL) { 486 dprintk(verbose, DST_CA_ERROR, 1, " Memory allocation failure"); 487 return -ENOMEM; 488 } 489 dprintk(verbose, DST_CA_DEBUG, 1, " "); 490 491 if (copy_from_user(p_ca_message, arg, sizeof (struct ca_msg))) { 492 result = -EFAULT; 493 goto free_mem_and_exit; 494 } 495 496 497 if (p_ca_message->msg) { 498 ca_message_header_len = p_ca_message->length; /* Restore it back when you are done */ 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 } 551free_mem_and_exit: 552 kfree (hw_buffer); 553 554 return result; 555} 556 557static 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 lock_kernel(); 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 unlock_kernel(); 656 return result; 657} 658 659static 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 667static 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 675static 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 684static 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 691static 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}; 699 700static struct dvb_device dvbdev_ca = { 701 .priv = NULL, 702 .users = 1, 703 .readers = 1, 704 .writers = 1, 705 .fops = &dst_ca_fops 706}; 707 708struct dvb_device *dst_ca_attach(struct dst_state *dst, struct dvb_adapter *dvb_adapter) 709{ 710 struct dvb_device *dvbdev; 711 712 dprintk(verbose, DST_CA_ERROR, 1, "registering DST-CA device"); 713 if (dvb_register_device(dvb_adapter, &dvbdev, &dvbdev_ca, dst, DVB_DEVICE_CA) == 0) { 714 dst->dst_ca = dvbdev; 715 return dst->dst_ca; 716 } 717 718 return NULL; 719} 720 721EXPORT_SYMBOL(dst_ca_attach); 722 723MODULE_DESCRIPTION("DST DVB-S/T/C Combo CA driver"); 724MODULE_AUTHOR("Manu Abraham"); 725MODULE_LICENSE("GPL"); 726