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 <media/dvbdev.h> 29 #include <media/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 static void put_command_and_length(u8 *data, int command, int length) 61 { 62 data[0] = (command >> 16) & 0xff; 63 data[1] = (command >> 8) & 0xff; 64 data[2] = command & 0xff; 65 data[3] = length; 66 } 67 68 static void put_checksum(u8 *check_string, int length) 69 { 70 dprintk(verbose, DST_CA_DEBUG, 1, " Computing string checksum."); 71 dprintk(verbose, DST_CA_DEBUG, 1, " -> string length : 0x%02x", length); 72 check_string[length] = dst_check_sum (check_string, length); 73 dprintk(verbose, DST_CA_DEBUG, 1, " -> checksum : 0x%02x", check_string[length]); 74 } 75 76 static int dst_ci_command(struct dst_state* state, u8 * data, u8 *ca_string, u8 len, int read) 77 { 78 u8 reply; 79 80 mutex_lock(&state->dst_mutex); 81 dst_comm_init(state); 82 msleep(65); 83 84 if (write_dst(state, data, len)) { 85 dprintk(verbose, DST_CA_INFO, 1, " Write not successful, trying to recover"); 86 dst_error_recovery(state); 87 goto error; 88 } 89 if ((dst_pio_disable(state)) < 0) { 90 dprintk(verbose, DST_CA_ERROR, 1, " DST PIO disable failed."); 91 goto error; 92 } 93 if (read_dst(state, &reply, GET_ACK) < 0) { 94 dprintk(verbose, DST_CA_INFO, 1, " Read not successful, trying to recover"); 95 dst_error_recovery(state); 96 goto error; 97 } 98 if (read) { 99 if (! dst_wait_dst_ready(state, LONG_DELAY)) { 100 dprintk(verbose, DST_CA_NOTICE, 1, " 8820 not ready"); 101 goto error; 102 } 103 if (read_dst(state, ca_string, 128) < 0) { /* Try to make this dynamic */ 104 dprintk(verbose, DST_CA_INFO, 1, " Read not successful, trying to recover"); 105 dst_error_recovery(state); 106 goto error; 107 } 108 } 109 mutex_unlock(&state->dst_mutex); 110 return 0; 111 112 error: 113 mutex_unlock(&state->dst_mutex); 114 return -EIO; 115 } 116 117 118 static int dst_put_ci(struct dst_state *state, u8 *data, int len, u8 *ca_string, int read) 119 { 120 u8 dst_ca_comm_err = 0; 121 122 while (dst_ca_comm_err < RETRIES) { 123 dprintk(verbose, DST_CA_NOTICE, 1, " Put Command"); 124 if (dst_ci_command(state, data, ca_string, len, read)) { // If error 125 dst_error_recovery(state); 126 dst_ca_comm_err++; // work required here. 127 } else { 128 break; 129 } 130 } 131 132 if(dst_ca_comm_err == RETRIES) 133 return -EIO; 134 135 return 0; 136 } 137 138 139 140 static int ca_get_app_info(struct dst_state *state) 141 { 142 int length, str_length; 143 static u8 command[8] = {0x07, 0x40, 0x01, 0x00, 0x01, 0x00, 0x00, 0xff}; 144 145 put_checksum(&command[0], command[0]); 146 if ((dst_put_ci(state, command, sizeof(command), state->messages, GET_REPLY)) < 0) { 147 dprintk(verbose, DST_CA_ERROR, 1, " -->dst_put_ci FAILED !"); 148 return -EIO; 149 } 150 dprintk(verbose, DST_CA_INFO, 1, " -->dst_put_ci SUCCESS !"); 151 dprintk(verbose, DST_CA_INFO, 1, " ================================ CI Module Application Info ======================================"); 152 dprintk(verbose, DST_CA_INFO, 1, " Application Type=[%d], Application Vendor=[%d], Vendor Code=[%d]\n%s: Application info=[%s]", 153 state->messages[7], (state->messages[8] << 8) | state->messages[9], 154 (state->messages[10] << 8) | state->messages[11], __func__, (char *)(&state->messages[12])); 155 dprintk(verbose, DST_CA_INFO, 1, " =================================================================================================="); 156 157 // Transform dst message to correct application_info message 158 length = state->messages[5]; 159 str_length = length - 6; 160 if (str_length < 0) { 161 str_length = 0; 162 dprintk(verbose, DST_CA_ERROR, 1, "Invalid string length returned in ca_get_app_info(). Recovering."); 163 } 164 165 // First, the command and length fields 166 put_command_and_length(&state->messages[0], CA_APP_INFO, length); 167 168 // Copy application_type, application_manufacturer and manufacturer_code 169 memmove(&state->messages[4], &state->messages[7], 5); 170 171 // Set string length and copy string 172 state->messages[9] = str_length; 173 memmove(&state->messages[10], &state->messages[12], str_length); 174 175 return 0; 176 } 177 178 static int ca_get_ca_info(struct dst_state *state) 179 { 180 int srcPtr, dstPtr, i, num_ids; 181 static u8 slot_command[8] = {0x07, 0x40, 0x00, 0x00, 0x02, 0x00, 0x00, 0xff}; 182 const int in_system_id_pos = 8, out_system_id_pos = 4, in_num_ids_pos = 7; 183 184 put_checksum(&slot_command[0], slot_command[0]); 185 if ((dst_put_ci(state, slot_command, sizeof (slot_command), state->messages, GET_REPLY)) < 0) { 186 dprintk(verbose, DST_CA_ERROR, 1, " -->dst_put_ci FAILED !"); 187 return -EIO; 188 } 189 dprintk(verbose, DST_CA_INFO, 1, " -->dst_put_ci SUCCESS !"); 190 191 // Print raw data 192 dprintk(verbose, DST_CA_INFO, 0, " DST data = ["); 193 for (i = 0; i < state->messages[0] + 1; i++) { 194 dprintk(verbose, DST_CA_INFO, 0, " 0x%02x", state->messages[i]); 195 } 196 dprintk(verbose, DST_CA_INFO, 0, "]\n"); 197 198 // Set the command and length of the output 199 num_ids = state->messages[in_num_ids_pos]; 200 if (num_ids >= 100) { 201 num_ids = 100; 202 dprintk(verbose, DST_CA_ERROR, 1, "Invalid number of ids (>100). Recovering."); 203 } 204 put_command_and_length(&state->messages[0], CA_INFO, num_ids * 2); 205 206 dprintk(verbose, DST_CA_INFO, 0, " CA_INFO = ["); 207 srcPtr = in_system_id_pos; 208 dstPtr = out_system_id_pos; 209 for(i = 0; i < num_ids; i++) { 210 dprintk(verbose, DST_CA_INFO, 0, " 0x%02x%02x", state->messages[srcPtr + 0], state->messages[srcPtr + 1]); 211 // Append to output 212 state->messages[dstPtr + 0] = state->messages[srcPtr + 0]; 213 state->messages[dstPtr + 1] = state->messages[srcPtr + 1]; 214 srcPtr += 2; 215 dstPtr += 2; 216 } 217 dprintk(verbose, DST_CA_INFO, 0, "]\n"); 218 219 return 0; 220 } 221 222 static int ca_get_slot_caps(struct dst_state *state, struct ca_caps *p_ca_caps, void __user *arg) 223 { 224 int i; 225 u8 slot_cap[256]; 226 static u8 slot_command[8] = {0x07, 0x40, 0x02, 0x00, 0x02, 0x00, 0x00, 0xff}; 227 228 put_checksum(&slot_command[0], slot_command[0]); 229 if ((dst_put_ci(state, slot_command, sizeof (slot_command), slot_cap, GET_REPLY)) < 0) { 230 dprintk(verbose, DST_CA_ERROR, 1, " -->dst_put_ci FAILED !"); 231 return -EIO; 232 } 233 dprintk(verbose, DST_CA_NOTICE, 1, " -->dst_put_ci SUCCESS !"); 234 235 /* Will implement the rest soon */ 236 237 dprintk(verbose, DST_CA_INFO, 1, " Slot cap = [%d]", slot_cap[7]); 238 dprintk(verbose, DST_CA_INFO, 0, "===================================\n"); 239 for (i = 0; i < slot_cap[0] + 1; i++) 240 dprintk(verbose, DST_CA_INFO, 0, " %d", slot_cap[i]); 241 dprintk(verbose, DST_CA_INFO, 0, "\n"); 242 243 p_ca_caps->slot_num = 1; 244 p_ca_caps->slot_type = 1; 245 p_ca_caps->descr_num = slot_cap[7]; 246 p_ca_caps->descr_type = 1; 247 248 if (copy_to_user(arg, p_ca_caps, sizeof (struct ca_caps))) 249 return -EFAULT; 250 251 return 0; 252 } 253 254 /* Need some more work */ 255 static int ca_get_slot_descr(struct dst_state *state, struct ca_msg *p_ca_message, void __user *arg) 256 { 257 return -EOPNOTSUPP; 258 } 259 260 261 static int ca_get_slot_info(struct dst_state *state, struct ca_slot_info *p_ca_slot_info, void __user *arg) 262 { 263 int i; 264 static u8 slot_command[8] = {0x00, 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff}; 265 266 u8 *slot_info = state->messages; 267 268 put_checksum(&slot_command[0], 7); 269 if ((dst_put_ci(state, slot_command, sizeof (slot_command), slot_info, GET_REPLY)) < 0) { 270 dprintk(verbose, DST_CA_ERROR, 1, " -->dst_put_ci FAILED !"); 271 return -EIO; 272 } 273 dprintk(verbose, DST_CA_INFO, 1, " -->dst_put_ci SUCCESS !"); 274 275 /* Will implement the rest soon */ 276 277 dprintk(verbose, DST_CA_INFO, 1, " Slot info = [%d]", slot_info[3]); 278 dprintk(verbose, DST_CA_INFO, 0, "===================================\n"); 279 for (i = 0; i < 8; i++) 280 dprintk(verbose, DST_CA_INFO, 0, " %d", slot_info[i]); 281 dprintk(verbose, DST_CA_INFO, 0, "\n"); 282 283 if (slot_info[4] & 0x80) { 284 p_ca_slot_info->flags = CA_CI_MODULE_PRESENT; 285 p_ca_slot_info->num = 1; 286 p_ca_slot_info->type = CA_CI; 287 } else if (slot_info[4] & 0x40) { 288 p_ca_slot_info->flags = CA_CI_MODULE_READY; 289 p_ca_slot_info->num = 1; 290 p_ca_slot_info->type = CA_CI; 291 } else 292 p_ca_slot_info->flags = 0; 293 294 if (copy_to_user(arg, p_ca_slot_info, sizeof (struct ca_slot_info))) 295 return -EFAULT; 296 297 return 0; 298 } 299 300 301 static int ca_get_message(struct dst_state *state, struct ca_msg *p_ca_message, void __user *arg) 302 { 303 u8 i = 0; 304 u32 command = 0; 305 306 if (copy_from_user(p_ca_message, arg, sizeof (struct ca_msg))) 307 return -EFAULT; 308 309 dprintk(verbose, DST_CA_NOTICE, 1, " Message = [%*ph]", 310 3, p_ca_message->msg); 311 312 for (i = 0; i < 3; i++) { 313 command = command | p_ca_message->msg[i]; 314 if (i < 2) 315 command = command << 8; 316 } 317 dprintk(verbose, DST_CA_NOTICE, 1, " Command=[0x%x]", command); 318 319 switch (command) { 320 case CA_APP_INFO: 321 memcpy(p_ca_message->msg, state->messages, 128); 322 if (copy_to_user(arg, p_ca_message, sizeof (struct ca_msg)) ) 323 return -EFAULT; 324 break; 325 case CA_INFO: 326 memcpy(p_ca_message->msg, state->messages, 128); 327 if (copy_to_user(arg, p_ca_message, sizeof (struct ca_msg)) ) 328 return -EFAULT; 329 break; 330 } 331 332 return 0; 333 } 334 335 static int handle_dst_tag(struct dst_state *state, struct ca_msg *p_ca_message, struct ca_msg *hw_buffer, u32 length) 336 { 337 if (state->dst_hw_cap & DST_TYPE_HAS_SESSION) { 338 hw_buffer->msg[2] = p_ca_message->msg[1]; /* MSB */ 339 hw_buffer->msg[3] = p_ca_message->msg[2]; /* LSB */ 340 } else { 341 if (length > 247) { 342 dprintk(verbose, DST_CA_ERROR, 1, " Message too long ! *** Bailing Out *** !"); 343 return -EIO; 344 } 345 hw_buffer->msg[0] = (length & 0xff) + 7; 346 hw_buffer->msg[1] = 0x40; 347 hw_buffer->msg[2] = 0x03; 348 hw_buffer->msg[3] = 0x00; 349 hw_buffer->msg[4] = 0x03; 350 hw_buffer->msg[5] = length & 0xff; 351 hw_buffer->msg[6] = 0x00; 352 353 /* 354 * Need to compute length for EN50221 section 8.3.2, for the time being 355 * assuming 8.3.2 is not applicable 356 */ 357 memcpy(&hw_buffer->msg[7], &p_ca_message->msg[4], length); 358 } 359 360 return 0; 361 } 362 363 static int write_to_8820(struct dst_state *state, struct ca_msg *hw_buffer, u8 length, u8 reply) 364 { 365 if ((dst_put_ci(state, hw_buffer->msg, length, hw_buffer->msg, reply)) < 0) { 366 dprintk(verbose, DST_CA_ERROR, 1, " DST-CI Command failed."); 367 dprintk(verbose, DST_CA_NOTICE, 1, " Resetting DST."); 368 rdc_reset_state(state); 369 return -EIO; 370 } 371 dprintk(verbose, DST_CA_NOTICE, 1, " DST-CI Command success."); 372 373 return 0; 374 } 375 376 static u32 asn_1_decode(u8 *asn_1_array) 377 { 378 u8 length_field = 0, word_count = 0, count = 0; 379 u32 length = 0; 380 381 length_field = asn_1_array[0]; 382 dprintk(verbose, DST_CA_DEBUG, 1, " Length field=[%02x]", length_field); 383 if (length_field < 0x80) { 384 length = length_field & 0x7f; 385 dprintk(verbose, DST_CA_DEBUG, 1, " Length=[%02x]\n", length); 386 } else { 387 word_count = length_field & 0x7f; 388 for (count = 0; count < word_count; count++) { 389 length = length << 8; 390 length += asn_1_array[count + 1]; 391 dprintk(verbose, DST_CA_DEBUG, 1, " Length=[%04x]", length); 392 } 393 } 394 return length; 395 } 396 397 static int debug_string(u8 *msg, u32 length, u32 offset) 398 { 399 u32 i; 400 401 dprintk(verbose, DST_CA_DEBUG, 0, " String=[ "); 402 for (i = offset; i < length; i++) 403 dprintk(verbose, DST_CA_DEBUG, 0, "%02x ", msg[i]); 404 dprintk(verbose, DST_CA_DEBUG, 0, "]\n"); 405 406 return 0; 407 } 408 409 410 static int ca_set_pmt(struct dst_state *state, struct ca_msg *p_ca_message, struct ca_msg *hw_buffer, u8 reply, u8 query) 411 { 412 u32 length = 0; 413 u8 tag_length = 8; 414 415 length = asn_1_decode(&p_ca_message->msg[3]); 416 dprintk(verbose, DST_CA_DEBUG, 1, " CA Message length=[%d]", length); 417 debug_string(&p_ca_message->msg[4], length, 0); /* length is excluding tag & length */ 418 419 memset(hw_buffer->msg, '\0', length); 420 handle_dst_tag(state, p_ca_message, hw_buffer, length); 421 put_checksum(hw_buffer->msg, hw_buffer->msg[0]); 422 423 debug_string(hw_buffer->msg, (length + tag_length), 0); /* tags too */ 424 write_to_8820(state, hw_buffer, (length + tag_length), reply); 425 426 return 0; 427 } 428 429 430 /* Board supports CA PMT reply ? */ 431 static int dst_check_ca_pmt(struct dst_state *state, struct ca_msg *p_ca_message, struct ca_msg *hw_buffer) 432 { 433 int ca_pmt_reply_test = 0; 434 435 /* Do test board */ 436 /* Not there yet but soon */ 437 438 /* CA PMT Reply capable */ 439 if (ca_pmt_reply_test) { 440 if ((ca_set_pmt(state, p_ca_message, hw_buffer, 1, GET_REPLY)) < 0) { 441 dprintk(verbose, DST_CA_ERROR, 1, " ca_set_pmt.. failed !"); 442 return -EIO; 443 } 444 445 /* Process CA PMT Reply */ 446 /* will implement soon */ 447 dprintk(verbose, DST_CA_ERROR, 1, " Not there yet"); 448 } 449 /* CA PMT Reply not capable */ 450 if (!ca_pmt_reply_test) { 451 if ((ca_set_pmt(state, p_ca_message, hw_buffer, 0, NO_REPLY)) < 0) { 452 dprintk(verbose, DST_CA_ERROR, 1, " ca_set_pmt.. failed !"); 453 return -EIO; 454 } 455 dprintk(verbose, DST_CA_NOTICE, 1, " ca_set_pmt.. success !"); 456 /* put a dummy message */ 457 458 } 459 return 0; 460 } 461 462 static int ca_send_message(struct dst_state *state, struct ca_msg *p_ca_message, void __user *arg) 463 { 464 int i; 465 u32 command; 466 struct ca_msg *hw_buffer; 467 int result = 0; 468 469 hw_buffer = kmalloc(sizeof(*hw_buffer), GFP_KERNEL); 470 if (!hw_buffer) 471 return -ENOMEM; 472 dprintk(verbose, DST_CA_DEBUG, 1, " "); 473 474 if (copy_from_user(p_ca_message, arg, sizeof (struct ca_msg))) { 475 result = -EFAULT; 476 goto free_mem_and_exit; 477 } 478 479 /* EN50221 tag */ 480 command = 0; 481 482 for (i = 0; i < 3; i++) { 483 command = command | p_ca_message->msg[i]; 484 if (i < 2) 485 command = command << 8; 486 } 487 dprintk(verbose, DST_CA_DEBUG, 1, " Command=[0x%x]\n", command); 488 489 switch (command) { 490 case CA_PMT: 491 dprintk(verbose, DST_CA_DEBUG, 1, "Command = SEND_CA_PMT"); 492 if ((ca_set_pmt(state, p_ca_message, hw_buffer, 0, 0)) < 0) { // code simplification started 493 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_PMT Failed !"); 494 result = -1; 495 goto free_mem_and_exit; 496 } 497 dprintk(verbose, DST_CA_INFO, 1, " -->CA_PMT Success !"); 498 break; 499 case CA_PMT_REPLY: 500 dprintk(verbose, DST_CA_INFO, 1, "Command = CA_PMT_REPLY"); 501 /* Have to handle the 2 basic types of cards here */ 502 if ((dst_check_ca_pmt(state, p_ca_message, hw_buffer)) < 0) { 503 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_PMT_REPLY Failed !"); 504 result = -1; 505 goto free_mem_and_exit; 506 } 507 dprintk(verbose, DST_CA_INFO, 1, " -->CA_PMT_REPLY Success !"); 508 break; 509 case CA_APP_INFO_ENQUIRY: // only for debugging 510 dprintk(verbose, DST_CA_INFO, 1, " Getting Cam Application information"); 511 512 if ((ca_get_app_info(state)) < 0) { 513 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_APP_INFO_ENQUIRY Failed !"); 514 result = -1; 515 goto free_mem_and_exit; 516 } 517 dprintk(verbose, DST_CA_INFO, 1, " -->CA_APP_INFO_ENQUIRY Success !"); 518 break; 519 case CA_INFO_ENQUIRY: 520 dprintk(verbose, DST_CA_INFO, 1, " Getting CA Information"); 521 522 if ((ca_get_ca_info(state)) < 0) { 523 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_INFO_ENQUIRY Failed !"); 524 result = -1; 525 goto free_mem_and_exit; 526 } 527 dprintk(verbose, DST_CA_INFO, 1, " -->CA_INFO_ENQUIRY Success !"); 528 break; 529 } 530 531 free_mem_and_exit: 532 kfree (hw_buffer); 533 534 return result; 535 } 536 537 static long dst_ca_ioctl(struct file *file, unsigned int cmd, unsigned long ioctl_arg) 538 { 539 struct dvb_device *dvbdev; 540 struct dst_state *state; 541 struct ca_slot_info *p_ca_slot_info; 542 struct ca_caps *p_ca_caps; 543 struct ca_msg *p_ca_message; 544 void __user *arg = (void __user *)ioctl_arg; 545 int result = 0; 546 547 mutex_lock(&dst_ca_mutex); 548 dvbdev = file->private_data; 549 state = (struct dst_state *)dvbdev->priv; 550 p_ca_message = kmalloc(sizeof (struct ca_msg), GFP_KERNEL); 551 p_ca_slot_info = kmalloc(sizeof (struct ca_slot_info), GFP_KERNEL); 552 p_ca_caps = kmalloc(sizeof (struct ca_caps), GFP_KERNEL); 553 if (!p_ca_message || !p_ca_slot_info || !p_ca_caps) { 554 result = -ENOMEM; 555 goto free_mem_and_exit; 556 } 557 558 /* We have now only the standard ioctl's, the driver is upposed to handle internals. */ 559 switch (cmd) { 560 case CA_SEND_MSG: 561 dprintk(verbose, DST_CA_INFO, 1, " Sending message"); 562 result = ca_send_message(state, p_ca_message, arg); 563 564 if (result < 0) { 565 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_SEND_MSG Failed !"); 566 goto free_mem_and_exit; 567 } 568 break; 569 case CA_GET_MSG: 570 dprintk(verbose, DST_CA_INFO, 1, " Getting message"); 571 result = ca_get_message(state, p_ca_message, arg); 572 if (result < 0) { 573 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_GET_MSG Failed !"); 574 goto free_mem_and_exit; 575 } 576 dprintk(verbose, DST_CA_INFO, 1, " -->CA_GET_MSG Success !"); 577 break; 578 case CA_RESET: 579 dprintk(verbose, DST_CA_ERROR, 1, " Resetting DST"); 580 dst_error_bailout(state); 581 msleep(4000); 582 break; 583 case CA_GET_SLOT_INFO: 584 dprintk(verbose, DST_CA_INFO, 1, " Getting Slot info"); 585 result = ca_get_slot_info(state, p_ca_slot_info, arg); 586 if (result < 0) { 587 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_GET_SLOT_INFO Failed !"); 588 result = -1; 589 goto free_mem_and_exit; 590 } 591 dprintk(verbose, DST_CA_INFO, 1, " -->CA_GET_SLOT_INFO Success !"); 592 break; 593 case CA_GET_CAP: 594 dprintk(verbose, DST_CA_INFO, 1, " Getting Slot capabilities"); 595 result = ca_get_slot_caps(state, p_ca_caps, arg); 596 if (result < 0) { 597 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_GET_CAP Failed !"); 598 goto free_mem_and_exit; 599 } 600 dprintk(verbose, DST_CA_INFO, 1, " -->CA_GET_CAP Success !"); 601 break; 602 case CA_GET_DESCR_INFO: 603 dprintk(verbose, DST_CA_INFO, 1, " Getting descrambler description"); 604 result = ca_get_slot_descr(state, p_ca_message, arg); 605 if (result < 0) { 606 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_GET_DESCR_INFO Failed !"); 607 goto free_mem_and_exit; 608 } 609 dprintk(verbose, DST_CA_INFO, 1, " -->CA_GET_DESCR_INFO Success !"); 610 break; 611 default: 612 result = -EOPNOTSUPP; 613 } 614 free_mem_and_exit: 615 kfree (p_ca_message); 616 kfree (p_ca_slot_info); 617 kfree (p_ca_caps); 618 619 mutex_unlock(&dst_ca_mutex); 620 return result; 621 } 622 623 static int dst_ca_open(struct inode *inode, struct file *file) 624 { 625 dprintk(verbose, DST_CA_DEBUG, 1, " Device opened [%p] ", file); 626 627 return 0; 628 } 629 630 static int dst_ca_release(struct inode *inode, struct file *file) 631 { 632 dprintk(verbose, DST_CA_DEBUG, 1, " Device closed."); 633 634 return 0; 635 } 636 637 static ssize_t dst_ca_read(struct file *file, char __user *buffer, size_t length, loff_t *offset) 638 { 639 dprintk(verbose, DST_CA_DEBUG, 1, " Device read."); 640 641 return 0; 642 } 643 644 static ssize_t dst_ca_write(struct file *file, const char __user *buffer, size_t length, loff_t *offset) 645 { 646 dprintk(verbose, DST_CA_DEBUG, 1, " Device write."); 647 648 return 0; 649 } 650 651 static const struct file_operations dst_ca_fops = { 652 .owner = THIS_MODULE, 653 .unlocked_ioctl = dst_ca_ioctl, 654 .open = dst_ca_open, 655 .release = dst_ca_release, 656 .read = dst_ca_read, 657 .write = dst_ca_write, 658 .llseek = noop_llseek, 659 }; 660 661 static struct dvb_device dvbdev_ca = { 662 .priv = NULL, 663 .users = 1, 664 .readers = 1, 665 .writers = 1, 666 .fops = &dst_ca_fops 667 }; 668 669 struct dvb_device *dst_ca_attach(struct dst_state *dst, struct dvb_adapter *dvb_adapter) 670 { 671 struct dvb_device *dvbdev; 672 673 dprintk(verbose, DST_CA_ERROR, 1, "registering DST-CA device"); 674 if (dvb_register_device(dvb_adapter, &dvbdev, &dvbdev_ca, dst, 675 DVB_DEVICE_CA, 0) == 0) { 676 dst->dst_ca = dvbdev; 677 return dst->dst_ca; 678 } 679 680 return NULL; 681 } 682 683 EXPORT_SYMBOL(dst_ca_attach); 684 685 MODULE_DESCRIPTION("DST DVB-S/T/C Combo CA driver"); 686 MODULE_AUTHOR("Manu Abraham"); 687 MODULE_LICENSE("GPL"); 688