drivers/media/dvb/bt8xx/dst_ca.c

   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
  22
  23 #include <linux/kernel.h>
  24 #include <linux/module.h>
  25 #include <linux/init.h>
  26 #include <linux/string.h>
  27
  28 #include <linux/dvb/ca.h>
  29 #include "dvbdev.h"
  30 #include "dvb_frontend.h"
  31
  32 #include "dst_ca.h"
  33 #include "dst_common.h"
  34
  35 static unsigned int verbose = 5;
  36 module_param(verbose, int, 0644);
  37 MODULE_PARM_DESC(verbose, "verbose startup messages, default is 1 (yes)");
  38
  39 static unsigned int debug = 1;
  40 module_param(debug, int, 0644);
  41 MODULE_PARM_DESC(debug, "debug messages, default is 1 (yes)");
  42
  43 #define dprintk if (debug) printk
  44
  45 /*      Need some more work     */
  46 static int ca_set_slot_descr(void)
  47 {
  48         /*      We could make this more graceful ?      */
  49         return -EOPNOTSUPP;
  50 }
  51
  52 /*      Need some more work     */
  53 static int ca_set_pid(void)
  54 {
  55         /*      We could make this more graceful ?      */
  56         return -EOPNOTSUPP;
  57 }
  58
  59
  60 static int put_checksum(u8 *check_string, int length)
  61 {
  62         u8 i = 0, checksum = 0;
  63
  64         if (verbose > 3) {
  65                 dprintk("%s: ========================= Checksum calculation ===========================\n", __FUNCTION__);
  66                 dprintk("%s: String Length=[0x%02x]\n", __FUNCTION__, length);
  67
  68                 dprintk("%s: String=[", __FUNCTION__);
  69         }
  70         while (i < length) {
  71                 if (verbose > 3)
  72                         dprintk(" %02x", check_string[i]);
  73                 checksum += check_string[i];
  74                 i++;
  75         }
  76         if (verbose > 3) {
  77                 dprintk(" ]\n");
  78                 dprintk("%s: Sum=[%02x]\n", __FUNCTION__, checksum);
  79         }
  80         check_string[length] = ~checksum + 1;
  81         if (verbose > 3) {
  82                 dprintk("%s: Checksum=[%02x]\n", __FUNCTION__, check_string[length]);
  83                 dprintk("%s: ==========================================================================\n", __FUNCTION__);
  84         }
  85
  86         return 0;
  87 }
  88
  89 static int dst_ci_command(struct dst_state* state, u8 * data, u8 *ca_string, u8 len, int read)
  90 {
  91         u8 reply;
  92
  93         dst_comm_init(state);
  94         msleep(65);
  95
  96         if (write_dst(state, data, len)) {
  97                 dprintk("%s: Write not successful, trying to recover\n", __FUNCTION__);
  98                 dst_error_recovery(state);
  99                 return -1;
 100         }
 101
 102         if ((dst_pio_disable(state)) < 0) {
 103                 dprintk("%s: DST PIO disable failed.\n", __FUNCTION__);
 104                 return -1;
 105         }
 106
 107         if (read_dst(state, &reply, GET_ACK) < 0) {
 108                 dprintk("%s: Read not successful, trying to recover\n", __FUNCTION__);
 109                 dst_error_recovery(state);
 110                 return -1;
 111         }
 112
 113         if (read) {
 114                 if (! dst_wait_dst_ready(state, LONG_DELAY)) {
 115                         dprintk("%s: 8820 not ready\n", __FUNCTION__);
 116                         return -1;
 117                 }
 118
 119                 if (read_dst(state, ca_string, 128) < 0) {      /*      Try to make this dynamic        */
 120                         dprintk("%s: Read not successful, trying to recover\n", __FUNCTION__);
 121                         dst_error_recovery(state);
 122                         return -1;
 123                 }
 124         }
 125
 126         return 0;
 127 }
 128
 129
 130 static int dst_put_ci(struct dst_state *state, u8 *data, int len, u8 *ca_string, int read)
 131 {
 132         u8 dst_ca_comm_err = 0;
 133
 134         while (dst_ca_comm_err < RETRIES) {
 135                 dst_comm_init(state);
 136                 if (verbose > 2)
 137                         dprintk("%s: Put Command\n", __FUNCTION__);
 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                 }
 142                 break;
 143         }
 144
 145         return 0;
 146 }
 147
 148
 149
 150 static int ca_get_app_info(struct dst_state *state)
 151 {
 152         static u8 command[8] = {0x07, 0x40, 0x01, 0x00, 0x01, 0x00, 0x00, 0xff};
 153
 154         put_checksum(&command[0], command[0]);
 155         if ((dst_put_ci(state, command, sizeof(command), state->messages, GET_REPLY)) < 0) {
 156                 dprintk("%s: -->dst_put_ci FAILED !\n", __FUNCTION__);
 157                 return -1;
 158         }
 159         if (verbose > 1) {
 160                 dprintk("%s: -->dst_put_ci SUCCESS !\n", __FUNCTION__);
 161
 162                 dprintk("%s: ================================ CI Module Application Info ======================================\n", __FUNCTION__);
 163                 dprintk("%s: Application Type=[%d], Application Vendor=[%d], Vendor Code=[%d]\n%s: Application info=[%s]\n",
 164                         __FUNCTION__, state->messages[7], (state->messages[8] << 8) | state->messages[9],
 165                         (state->messages[10] << 8) | state->messages[11], __FUNCTION__, (char *)(&state->messages[12]));
 166                 dprintk("%s: ==================================================================================================\n", __FUNCTION__);
 167         }
 168
 169         return 0;
 170 }
 171
 172 static int ca_get_slot_caps(struct dst_state *state, struct ca_caps *p_ca_caps, void *arg)
 173 {
 174         int i;
 175         u8 slot_cap[256];
 176         static u8 slot_command[8] = {0x07, 0x40, 0x02, 0x00, 0x02, 0x00, 0x00, 0xff};
 177
 178         put_checksum(&slot_command[0], slot_command[0]);
 179         if ((dst_put_ci(state, slot_command, sizeof (slot_command), slot_cap, GET_REPLY)) < 0) {
 180                 dprintk("%s: -->dst_put_ci FAILED !\n", __FUNCTION__);
 181                 return -1;
 182         }
 183         if (verbose > 1)
 184                 dprintk("%s: -->dst_put_ci SUCCESS !\n", __FUNCTION__);
 185
 186         /*      Will implement the rest soon            */
 187
 188         if (verbose > 1) {
 189                 dprintk("%s: Slot cap = [%d]\n", __FUNCTION__, slot_cap[7]);
 190                 dprintk("===================================\n");
 191                 for (i = 0; i < 8; i++)
 192                         dprintk(" %d", slot_cap[i]);
 193                 dprintk("\n");
 194         }
 195
 196         p_ca_caps->slot_num = 1;
 197         p_ca_caps->slot_type = 1;
 198         p_ca_caps->descr_num = slot_cap[7];
 199         p_ca_caps->descr_type = 1;
 200
 201
 202         if (copy_to_user((struct ca_caps *)arg, p_ca_caps, sizeof (struct ca_caps))) {
 203                 return -EFAULT;
 204         }
 205
 206         return 0;
 207 }
 208
 209 /*      Need some more work     */
 210 static int ca_get_slot_descr(struct dst_state *state, struct ca_msg *p_ca_message, void *arg)
 211 {
 212         return -EOPNOTSUPP;
 213 }
 214
 215
 216 static int ca_get_slot_info(struct dst_state *state, struct ca_slot_info *p_ca_slot_info, void *arg)
 217 {
 218         int i;
 219         static u8 slot_command[8] = {0x00, 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff};
 220
 221         u8 *slot_info = state->rxbuffer;
 222
 223         put_checksum(&slot_command[0], 7);
 224         if ((dst_put_ci(state, slot_command, sizeof (slot_command), slot_info, GET_REPLY)) < 0) {
 225                 dprintk("%s: -->dst_put_ci FAILED !\n", __FUNCTION__);
 226                 return -1;
 227         }
 228         if (verbose > 1)
 229                 dprintk("%s: -->dst_put_ci SUCCESS !\n", __FUNCTION__);
 230
 231         /*      Will implement the rest soon            */
 232
 233         if (verbose > 1) {
 234                 dprintk("%s: Slot info = [%d]\n", __FUNCTION__, slot_info[3]);
 235                 dprintk("===================================\n");
 236                 for (i = 0; i < 8; i++)
 237                         dprintk(" %d", slot_info[i]);
 238                 dprintk("\n");
 239         }
 240
 241         if (slot_info[4] & 0x80) {
 242                 p_ca_slot_info->flags = CA_CI_MODULE_PRESENT;
 243                 p_ca_slot_info->num = 1;
 244                 p_ca_slot_info->type = CA_CI;
 245         }
 246         else if (slot_info[4] & 0x40) {
 247                 p_ca_slot_info->flags = CA_CI_MODULE_READY;
 248                 p_ca_slot_info->num = 1;
 249                 p_ca_slot_info->type = CA_CI;
 250         }
 251         else {
 252                 p_ca_slot_info->flags = 0;
 253         }
 254
 255         if (copy_to_user((struct ca_slot_info *)arg, p_ca_slot_info, sizeof (struct ca_slot_info))) {
 256                 return -EFAULT;
 257         }
 258
 259         return 0;
 260 }
 261
 262
 263
 264
 265 static int ca_get_message(struct dst_state *state, struct ca_msg *p_ca_message, void *arg)
 266 {
 267         u8 i = 0;
 268         u32 command = 0;
 269
 270         if (copy_from_user(p_ca_message, (void *)arg, sizeof (struct ca_msg)))
 271                 return -EFAULT;
 272
 273
 274         if (p_ca_message->msg) {
 275                 if (verbose > 3)
 276                         dprintk("Message = [%02x %02x %02x]\n", p_ca_message->msg[0], p_ca_message->msg[1], p_ca_message->msg[2]);
 277
 278                 for (i = 0; i < 3; i++) {
 279                         command = command | p_ca_message->msg[i];
 280                         if (i < 2)
 281                                 command = command << 8;
 282                 }
 283                 if (verbose > 3)
 284                         dprintk("%s:Command=[0x%x]\n", __FUNCTION__, command);
 285
 286                 switch (command) {
 287                         case CA_APP_INFO:
 288                                 memcpy(p_ca_message->msg, state->messages, 128);
 289                                 if (copy_to_user((void *)arg, p_ca_message, sizeof (struct ca_msg)) )
 290                                         return -EFAULT;
 291                         break;
 292                 }
 293         }
 294
 295         return 0;
 296 }
 297
 298 static int handle_dst_tag(struct dst_state *state, struct ca_msg *p_ca_message, struct ca_msg *hw_buffer, u32 length)
 299 {
 300         if (state->dst_hw_cap & DST_TYPE_HAS_SESSION) {
 301                 hw_buffer->msg[2] = p_ca_message->msg[1];               /*              MSB                     */
 302                 hw_buffer->msg[3] = p_ca_message->msg[2];               /*              LSB                     */
 303         }
 304         else {
 305                 hw_buffer->msg[0] = (length & 0xff) + 7;
 306                 hw_buffer->msg[1] = 0x40;
 307                 hw_buffer->msg[2] = 0x03;
 308                 hw_buffer->msg[3] = 0x00;
 309                 hw_buffer->msg[4] = 0x03;
 310                 hw_buffer->msg[5] = length & 0xff;
 311                 hw_buffer->msg[6] = 0x00;
 312         }
 313         return 0;
 314 }
 315
 316
 317 static int write_to_8820(struct dst_state *state, struct ca_msg *hw_buffer, u8 length, u8 reply)
 318 {
 319         if ((dst_put_ci(state, hw_buffer->msg, length, hw_buffer->msg, reply)) < 0) {
 320                 dprintk("%s: DST-CI Command failed.\n", __FUNCTION__);
 321                 dprintk("%s: Resetting DST.\n", __FUNCTION__);
 322                 rdc_reset_state(state);
 323                 return -1;
 324         }
 325         if (verbose > 2)
 326                 dprintk("%s: DST-CI Command succes.\n", __FUNCTION__);
 327
 328         return 0;
 329 }
 330
 331 u32 asn_1_decode(u8 *asn_1_array)
 332 {
 333         u8 length_field = 0, word_count = 0, count = 0;
 334         u32 length = 0;
 335
 336         length_field = asn_1_array[0];
 337         dprintk("%s: Length field=[%02x]\n", __FUNCTION__, length_field);
 338         if (length_field < 0x80) {
 339                 length = length_field & 0x7f;
 340                 dprintk("%s: Length=[%02x]\n", __FUNCTION__, length);
 341         } else {
 342                 word_count = length_field & 0x7f;
 343                 for (count = 0; count < word_count; count++) {
 344                         length = (length | asn_1_array[count + 1]) << 8;
 345                         dprintk("%s: Length=[%04x]\n", __FUNCTION__, length);
 346                 }
 347         }
 348         return length;
 349 }
 350
 351 static int init_buffer(u8 *buffer, u32 length)
 352 {
 353         u32 i;
 354         for (i = 0; i < length; i++)
 355                 buffer[i] = 0;
 356
 357         return 0;
 358 }
 359
 360 static int debug_string(u8 *msg, u32 length, u32 offset)
 361 {
 362         u32 i;
 363
 364         dprintk(" String=[ ");
 365         for (i = offset; i < length; i++)
 366                 dprintk("%02x ", msg[i]);
 367         dprintk("]\n");
 368
 369         return 0;
 370 }
 371
 372 static int copy_string(u8 *destination, u8 *source, u32 dest_offset, u32 source_offset, u32 length)
 373 {
 374         u32 i;
 375         dprintk("%s: Copying [", __FUNCTION__);
 376         for (i = 0; i < length; i++) {
 377                 destination[i + dest_offset] = source[i + source_offset];
 378                 dprintk(" %02x", source[i + source_offset]);
 379         }
 380         dprintk("]\n");
 381
 382         return i;
 383 }
 384
 385 static int modify_4_bits(u8 *message, u32 pos)
 386 {
 387         message[pos] &= 0x0f;
 388
 389         return 0;
 390 }
 391
 392
 393
 394 static int ca_set_pmt(struct dst_state *state, struct ca_msg *p_ca_message, struct ca_msg *hw_buffer, u8 reply, u8 query)
 395 {
 396         u32 length = 0, count = 0;
 397         u8 asn_1_words, program_header_length;
 398         u16 program_info_length = 0, es_info_length = 0;
 399         u32 hw_offset = 0, buf_offset = 0, i;
 400         u8 dst_tag_length;
 401
 402         length = asn_1_decode(&p_ca_message->msg[3]);
 403         dprintk("%s: CA Message length=[%d]\n", __FUNCTION__, length);
 404         dprintk("%s: ASN.1 ", __FUNCTION__);
 405         debug_string(&p_ca_message->msg[4], length, 0); // length does not include tag and length
 406
 407         init_buffer(hw_buffer->msg, length);
 408         handle_dst_tag(state, p_ca_message, hw_buffer, length);
 409
 410         hw_offset = 7;
 411         asn_1_words = 1; // just a hack to test, should compute this one
 412         buf_offset = 3;
 413         program_header_length = 6;
 414         dst_tag_length = 7;
 415
 416 //      debug_twinhan_ca_params(state, p_ca_message, hw_buffer, reply, query, length, hw_offset, buf_offset);
 417 //      dprintk("%s: Program Header(BUF)", __FUNCTION__);
 418 //      debug_string(&p_ca_message->msg[4], program_header_length, 0);
 419 //      dprintk("%s: Copying Program header\n", __FUNCTION__);
 420         copy_string(hw_buffer->msg, p_ca_message->msg, hw_offset, (buf_offset + asn_1_words), program_header_length);
 421         buf_offset += program_header_length, hw_offset += program_header_length;
 422         modify_4_bits(hw_buffer->msg, (hw_offset - 2));
 423         if (state->type_flags & DST_TYPE_HAS_INC_COUNT) {       // workaround
 424                 dprintk("%s: Probably an ASIC bug !!!\n", __FUNCTION__);
 425                 debug_string(hw_buffer->msg, (hw_offset + program_header_length), 0);
 426                 hw_buffer->msg[hw_offset - 1] += 1;
 427         }
 428
 429 //      dprintk("%s: Program Header(HW), Count=[%d]", __FUNCTION__, count);
 430 //      debug_string(hw_buffer->msg, hw_offset, 0);
 431
 432         program_info_length =  ((program_info_length | (p_ca_message->msg[buf_offset - 1] & 0x0f)) << 8) | p_ca_message->msg[buf_offset];
 433         dprintk("%s: Program info length=[%02x]\n", __FUNCTION__, program_info_length);
 434         if (program_info_length) {
 435                 count = copy_string(hw_buffer->msg, p_ca_message->msg, hw_offset, (buf_offset + 1), (program_info_length + 1) ); // copy next elem, not current
 436                 buf_offset += count, hw_offset += count;
 437 //              dprintk("%s: Program level ", __FUNCTION__);
 438 //              debug_string(hw_buffer->msg, hw_offset, 0);
 439         }
 440
 441         buf_offset += 1;// hw_offset += 1;
 442         for (i = buf_offset; i < length; i++) {
 443 //              dprintk("%s: Stream Header ", __FUNCTION__);
 444                 count = copy_string(hw_buffer->msg, p_ca_message->msg, hw_offset, buf_offset, 5);
 445                 modify_4_bits(hw_buffer->msg, (hw_offset + 3));
 446
 447                 hw_offset += 5, buf_offset += 5, i += 4;
 448 //              debug_string(hw_buffer->msg, hw_offset, (hw_offset - 5));
 449                 es_info_length = ((es_info_length | (p_ca_message->msg[buf_offset - 1] & 0x0f)) << 8) | p_ca_message->msg[buf_offset];
 450                 dprintk("%s: ES info length=[%02x]\n", __FUNCTION__, es_info_length);
 451                 if (es_info_length) {
 452                         // copy descriptors @ STREAM level
 453                         dprintk("%s: Descriptors @ STREAM level...!!! \n", __FUNCTION__);
 454                 }
 455
 456         }
 457         hw_buffer->msg[length + dst_tag_length] = dst_check_sum(hw_buffer->msg, (length + dst_tag_length));
 458 //      dprintk("%s: Total length=[%d], Checksum=[%02x]\n", __FUNCTION__, (length + dst_tag_length), hw_buffer->msg[length + dst_tag_length]);
 459         debug_string(hw_buffer->msg, (length + dst_tag_length + 1), 0); // dst tags also
 460         write_to_8820(state, hw_buffer, (length + dst_tag_length + 1), reply);  // checksum
 461
 462         return 0;
 463 }
 464
 465
 466 /*      Board supports CA PMT reply ?           */
 467 static int dst_check_ca_pmt(struct dst_state *state, struct ca_msg *p_ca_message, struct ca_msg *hw_buffer)
 468 {
 469         int ca_pmt_reply_test = 0;
 470
 471         /*      Do test board                   */
 472         /*      Not there yet but soon          */
 473
 474
 475         /*      CA PMT Reply capable            */
 476         if (ca_pmt_reply_test) {
 477                 if ((ca_set_pmt(state, p_ca_message, hw_buffer, 1, GET_REPLY)) < 0) {
 478                         dprintk("%s: ca_set_pmt.. failed !\n", __FUNCTION__);
 479                         return -1;
 480                 }
 481
 482         /*      Process CA PMT Reply            */
 483         /*      will implement soon             */
 484                 dprintk("%s: Not there yet\n", __FUNCTION__);
 485         }
 486         /*      CA PMT Reply not capable        */
 487         if (!ca_pmt_reply_test) {
 488                 if ((ca_set_pmt(state, p_ca_message, hw_buffer, 0, NO_REPLY)) < 0) {
 489                         dprintk("%s: ca_set_pmt.. failed !\n", __FUNCTION__);
 490                         return -1;
 491                 }
 492                 if (verbose > 3)
 493                         dprintk("%s: ca_set_pmt.. success !\n", __FUNCTION__);
 494         /*      put a dummy message             */
 495
 496         }
 497         return 0;
 498 }
 499
 500 static int ca_send_message(struct dst_state *state, struct ca_msg *p_ca_message, void *arg)
 501 {
 502         int i = 0;
 503         unsigned int ca_message_header_len;
 504
 505         u32 command = 0;
 506         struct ca_msg *hw_buffer;
 507
 508         if ((hw_buffer = (struct ca_msg *) kmalloc(sizeof (struct ca_msg), GFP_KERNEL)) == NULL) {
 509                 dprintk("%s: Memory allocation failure\n", __FUNCTION__);
 510                 return -ENOMEM;
 511         }
 512         if (verbose > 3)
 513                 dprintk("%s\n", __FUNCTION__);
 514
 515         if (copy_from_user(p_ca_message, (void *)arg, sizeof (struct ca_msg)))
 516                 return -EFAULT;
 517
 518         if (p_ca_message->msg) {
 519                 ca_message_header_len = p_ca_message->length;   /*      Restore it back when you are done       */
 520                 /*      EN50221 tag     */
 521                 command = 0;
 522
 523                 for (i = 0; i < 3; i++) {
 524                         command = command | p_ca_message->msg[i];
 525                         if (i < 2)
 526                                 command = command << 8;
 527                 }
 528                 if (verbose > 3)
 529                         dprintk("%s:Command=[0x%x]\n", __FUNCTION__, command);
 530
 531                 switch (command) {
 532                         case CA_PMT:
 533                                 if (verbose > 3)
 534 //                                      dprintk("Command = SEND_CA_PMT\n");
 535                                         dprintk("Command = SEND_CA_PMT\n");
 536 //                              if ((ca_set_pmt(state, p_ca_message, hw_buffer, 0, 0)) < 0) {
 537                                 if ((ca_set_pmt(state, p_ca_message, hw_buffer, 0, 0)) < 0) {   // code simplification started
 538                                         dprintk("%s: -->CA_PMT Failed !\n", __FUNCTION__);
 539                                         return -1;
 540                                 }
 541                                 if (verbose > 3)
 542                                         dprintk("%s: -->CA_PMT Success !\n", __FUNCTION__);
 543 //                              retval = dummy_set_pmt(state, p_ca_message, hw_buffer, 0, 0);
 544
 545                                 break;
 546
 547                         case CA_PMT_REPLY:
 548                                 if (verbose > 3)
 549                                         dprintk("Command = CA_PMT_REPLY\n");
 550                                 /*      Have to handle the 2 basic types of cards here  */
 551                                 if ((dst_check_ca_pmt(state, p_ca_message, hw_buffer)) < 0) {
 552                                         dprintk("%s: -->CA_PMT_REPLY Failed !\n", __FUNCTION__);
 553                                         return -1;
 554                                 }
 555                                 if (verbose > 3)
 556                                         dprintk("%s: -->CA_PMT_REPLY Success !\n", __FUNCTION__);
 557
 558                                 /*      Certain boards do behave different ?            */
 559 //                              retval = ca_set_pmt(state, p_ca_message, hw_buffer, 1, 1);
 560
 561                         case CA_APP_INFO_ENQUIRY:               // only for debugging
 562                                 if (verbose > 3)
 563                                         dprintk("%s: Getting Cam Application information\n", __FUNCTION__);
 564
 565                                 if ((ca_get_app_info(state)) < 0) {
 566                                         dprintk("%s: -->CA_APP_INFO_ENQUIRY Failed !\n", __FUNCTION__);
 567                                         return -1;
 568                                 }
 569                                 if (verbose > 3)
 570                                         dprintk("%s: -->CA_APP_INFO_ENQUIRY Success !\n", __FUNCTION__);
 571
 572                                 break;
 573                 }
 574         }
 575         return 0;
 576 }
 577
 578 static int dst_ca_ioctl(struct inode *inode, struct file *file, unsigned int cmd, void *arg)
 579 {
 580         struct dvb_device* dvbdev = (struct dvb_device*) file->private_data;
 581         struct dst_state* state = (struct dst_state*) dvbdev->priv;
 582         struct ca_slot_info *p_ca_slot_info;
 583         struct ca_caps *p_ca_caps;
 584         struct ca_msg *p_ca_message;
 585
 586         if ((p_ca_message = (struct ca_msg *) kmalloc(sizeof (struct ca_msg), GFP_KERNEL)) == NULL) {
 587                 dprintk("%s: Memory allocation failure\n", __FUNCTION__);
 588                 return -ENOMEM;
 589         }
 590
 591         if ((p_ca_slot_info = (struct ca_slot_info *) kmalloc(sizeof (struct ca_slot_info), GFP_KERNEL)) == NULL) {
 592                 dprintk("%s: Memory allocation failure\n", __FUNCTION__);
 593                 return -ENOMEM;
 594         }
 595
 596         if ((p_ca_caps = (struct ca_caps *) kmalloc(sizeof (struct ca_caps), GFP_KERNEL)) == NULL) {
 597                 dprintk("%s: Memory allocation failure\n", __FUNCTION__);
 598                 return -ENOMEM;
 599         }
 600
 601         /*      We have now only the standard ioctl's, the driver is upposed to handle internals.       */
 602         switch (cmd) {
 603                 case CA_SEND_MSG:
 604                         if (verbose > 1)
 605                                 dprintk("%s: Sending message\n", __FUNCTION__);
 606                         if ((ca_send_message(state, p_ca_message, arg)) < 0) {
 607                                 dprintk("%s: -->CA_SEND_MSG Failed !\n", __FUNCTION__);
 608                                 return -1;
 609                         }
 610
 611                         break;
 612
 613                 case CA_GET_MSG:
 614                         if (verbose > 1)
 615                                 dprintk("%s: Getting message\n", __FUNCTION__);
 616                         if ((ca_get_message(state, p_ca_message, arg)) < 0) {
 617                                 dprintk("%s: -->CA_GET_MSG Failed !\n", __FUNCTION__);
 618                                 return -1;
 619                         }
 620                         if (verbose > 1)
 621                                 dprintk("%s: -->CA_GET_MSG Success !\n", __FUNCTION__);
 622
 623                         break;
 624
 625                 case CA_RESET:
 626                         if (verbose > 1)
 627                                 dprintk("%s: Resetting DST\n", __FUNCTION__);
 628                         dst_error_bailout(state);
 629                         msleep(4000);
 630
 631                         break;
 632
 633                 case CA_GET_SLOT_INFO:
 634                         if (verbose > 1)
 635                                 dprintk("%s: Getting Slot info\n", __FUNCTION__);
 636                         if ((ca_get_slot_info(state, p_ca_slot_info, arg)) < 0) {
 637                                 dprintk("%s: -->CA_GET_SLOT_INFO Failed !\n", __FUNCTION__);
 638                                 return -1;
 639                         }
 640                         if (verbose > 1)
 641                                 dprintk("%s: -->CA_GET_SLOT_INFO Success !\n", __FUNCTION__);
 642
 643                         break;
 644
 645                 case CA_GET_CAP:
 646                         if (verbose > 1)
 647                                 dprintk("%s: Getting Slot capabilities\n", __FUNCTION__);
 648                         if ((ca_get_slot_caps(state, p_ca_caps, arg)) < 0) {
 649                                 dprintk("%s: -->CA_GET_CAP Failed !\n", __FUNCTION__);
 650                                 return -1;
 651                         }
 652                         if (verbose > 1)
 653                                 dprintk("%s: -->CA_GET_CAP Success !\n", __FUNCTION__);
 654
 655                         break;
 656
 657                 case CA_GET_DESCR_INFO:
 658                         if (verbose > 1)
 659                                 dprintk("%s: Getting descrambler description\n", __FUNCTION__);
 660                         if ((ca_get_slot_descr(state, p_ca_message, arg)) < 0) {
 661                                 dprintk("%s: -->CA_GET_DESCR_INFO Failed !\n", __FUNCTION__);
 662                                 return -1;
 663                         }
 664                         if (verbose > 1)
 665                                 dprintk("%s: -->CA_GET_DESCR_INFO Success !\n", __FUNCTION__);
 666
 667                         break;
 668
 669                 case CA_SET_DESCR:
 670                         if (verbose > 1)
 671                                 dprintk("%s: Setting descrambler\n", __FUNCTION__);
 672                         if ((ca_set_slot_descr()) < 0) {
 673                                 dprintk("%s: -->CA_SET_DESCR Failed !\n", __FUNCTION__);
 674                                 return -1;
 675                         }
 676                         if (verbose > 1)
 677                                 dprintk("%s: -->CA_SET_DESCR Success !\n", __FUNCTION__);
 678
 679                         break;
 680
 681                 case CA_SET_PID:
 682                         if (verbose > 1)
 683                                 dprintk("%s: Setting PID\n", __FUNCTION__);
 684                         if ((ca_set_pid()) < 0) {
 685                                 dprintk("%s: -->CA_SET_PID Failed !\n", __FUNCTION__);
 686                                 return -1;
 687                         }
 688                         if (verbose > 1)
 689                                 dprintk("%s: -->CA_SET_PID Success !\n", __FUNCTION__);
 690
 691                 default:
 692                         return -EOPNOTSUPP;
 693                 };
 694
 695         return 0;
 696 }
 697
 698 static int dst_ca_open(struct inode *inode, struct file *file)
 699 {
 700         if (verbose > 4)
 701                 dprintk("%s:Device opened [%p]\n", __FUNCTION__, file);
 702         try_module_get(THIS_MODULE);
 703
 704         return 0;
 705 }
 706
 707 static int dst_ca_release(struct inode *inode, struct file *file)
 708 {
 709         if (verbose > 4)
 710                 dprintk("%s:Device closed.\n", __FUNCTION__);
 711         module_put(THIS_MODULE);
 712
 713         return 0;
 714 }
 715
 716 static int dst_ca_read(struct file *file, char __user * buffer, size_t length, loff_t * offset)
 717 {
 718         int bytes_read = 0;
 719
 720         if (verbose > 4)
 721                 dprintk("%s:Device read.\n", __FUNCTION__);
 722
 723         return bytes_read;
 724 }
 725
 726 static int dst_ca_write(struct file *file, const char __user * buffer, size_t length, loff_t * offset)
 727 {
 728         if (verbose > 4)
 729                 dprintk("%s:Device write.\n", __FUNCTION__);
 730
 731         return 0;
 732 }
 733
 734 static struct file_operations dst_ca_fops = {
 735         .owner = THIS_MODULE,
 736         .ioctl = (void *)dst_ca_ioctl,
 737         .open = dst_ca_open,
 738         .release = dst_ca_release,
 739         .read = dst_ca_read,
 740         .write = dst_ca_write
 741 };
 742
 743 static struct dvb_device dvbdev_ca = {
 744         .priv = NULL,
 745         .users = 1,
 746         .readers = 1,
 747         .writers = 1,
 748         .fops = &dst_ca_fops
 749 };
 750
 751 int dst_ca_attach(struct dst_state *dst, struct dvb_adapter *dvb_adapter)
 752 {
 753         struct dvb_device *dvbdev;
 754         if (verbose > 4)
 755                 dprintk("%s:registering DST-CA device\n", __FUNCTION__);
 756         dvb_register_device(dvb_adapter, &dvbdev, &dvbdev_ca, dst, DVB_DEVICE_CA);
 757         return 0;
 758 }
 759
 760 EXPORT_SYMBOL(dst_ca_attach);
 761
 762 MODULE_DESCRIPTION("DST DVB-S/T/C Combo CA driver");
 763 MODULE_AUTHOR("Manu Abraham");
 764 MODULE_LICENSE("GPL");