SAFE public projects git trees. - safe/jmp/linux-2.6/blob - 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 = 1;
  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[11]));
 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_en50221_tag(struct dst_state *state, struct ca_msg *p_ca_message, struct ca_msg *hw_buffer)
 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[2] = 0x03;
 306                 hw_buffer->msg[3] = 0x00;
 307         }
 308         return 0;
 309 }
 310
 311 static int debug_8820_buffer(struct ca_msg *hw_buffer)
 312 {
 313         unsigned int i;
 314
 315         dprintk("%s:Debug=[", __FUNCTION__);
 316         for (i = 0; i < (hw_buffer->msg[0] + 1); i++)
 317                 dprintk(" %02x", hw_buffer->msg[i]);
 318         dprintk("]\n");
 319
 320         return 0;
 321 }
 322
 323 static int write_to_8820(struct dst_state *state, struct ca_msg *hw_buffer, u8 reply)
 324 {
 325         if ((dst_put_ci(state, hw_buffer->msg, (hw_buffer->length + 1), hw_buffer->msg, reply)) < 0) {
 326                 dprintk("%s: DST-CI Command failed.\n", __FUNCTION__);
 327                 dprintk("%s: Resetting DST.\n", __FUNCTION__);
 328                 rdc_reset_state(state);
 329                 return -1;
 330         }
 331         if (verbose > 2)
 332                 dprintk("%s: DST-CI Command succes.\n", __FUNCTION__);
 333
 334         return 0;
 335 }
 336
 337
 338 static int ca_set_pmt(struct dst_state *state, struct ca_msg *p_ca_message, struct ca_msg *hw_buffer, u8 reply, u8 query)
 339 {
 340         u32 hw_offset, buf_offset, i, k;
 341         u32 program_info_length = 0, es_info_length = 0, length = 0, words = 0;
 342         u8 found_prog_ca_desc = 0, found_stream_ca_desc = 0, error_condition = 0, hw_buffer_length = 0;
 343
 344         if (verbose > 3)
 345                 dprintk("%s, p_ca_message length %d (0x%x)\n", __FUNCTION__,p_ca_message->length,p_ca_message->length );
 346
 347         handle_en50221_tag(state, p_ca_message, hw_buffer);                     /*      EN50221 tag             */
 348
 349         /*      Handle the length field (variable)      */
 350         if (!(p_ca_message->msg[3] & 0x80)) {                           /*      Length = 1              */
 351                 length = p_ca_message->msg[3] & 0x7f;
 352                 words = 0;                                              /*      domi's suggestion       */
 353         }
 354         else {                                                          /*      Length = words          */
 355                 words = p_ca_message->msg[3] & 0x7f;
 356                 for (i = 0; i < words; i++) {
 357                         length = length << 8;
 358                         length = length | p_ca_message->msg[4 + i];
 359                 }
 360         }
 361         if (verbose > 4) {
 362                 dprintk("%s:Length=[%d (0x%x)], Words=[%d]\n", __FUNCTION__, length,length, words);
 363
 364                 /*      Debug Input string              */
 365                 for (i = 0; i < length; i++)
 366                         dprintk(" %02x", p_ca_message->msg[i]);
 367                 dprintk("]\n");
 368         }
 369
 370         hw_offset = 7;
 371         buf_offset = words + 4;
 372
 373         /*              Program Header                  */
 374         if (verbose > 4)
 375                 dprintk("\n%s:Program Header=[", __FUNCTION__);
 376         for (i = 0; i < 6; i++) {
 377                 hw_buffer->msg[hw_offset] = p_ca_message->msg[buf_offset];
 378                 if (verbose > 4)
 379                         dprintk(" %02x", p_ca_message->msg[buf_offset]);
 380                 hw_offset++, buf_offset++, hw_buffer_length++;
 381         }
 382         if (verbose > 4)
 383                 dprintk("]\n");
 384
 385         program_info_length = 0;
 386         program_info_length = (((program_info_length | p_ca_message->msg[words + 8]) & 0x0f) << 8) | p_ca_message->msg[words + 9];
 387         if (verbose > 4)
 388                 dprintk("%s:Program info Length=[%d][%02x], hw_offset=[%d], buf_offset=[%d] \n",
 389                         __FUNCTION__, program_info_length, program_info_length, hw_offset, buf_offset);
 390
 391         if (program_info_length && (program_info_length < 256)) {       /*      If program_info_length          */
 392                 hw_buffer->msg[11] = hw_buffer->msg[11] & 0x0f;         /*      req only 4 bits                 */
 393                 hw_buffer->msg[12] = hw_buffer->msg[12] + 1;            /*      increment! ASIC bug!            */
 394
 395                 if (p_ca_message->msg[buf_offset + 1] == 0x09) {        /*      Check CA descriptor             */
 396                         found_prog_ca_desc = 1;
 397                         if (verbose > 4)
 398                                 dprintk("%s: Found CA descriptor @ Program level\n", __FUNCTION__);
 399                 }
 400
 401                 if (found_prog_ca_desc) {                               /*      Command only if CA descriptor   */
 402                         hw_buffer->msg[13] = p_ca_message->msg[buf_offset];     /*      CA PMT command ID       */
 403                         hw_offset++, buf_offset++, hw_buffer_length++;
 404                 }
 405
 406                 /*                      Program descriptors                             */
 407                 if (verbose > 4) {
 408                         dprintk("%s:**********>buf_offset=[%d], hw_offset=[%d]\n", __FUNCTION__, buf_offset, hw_offset);
 409                         dprintk("%s:Program descriptors=[", __FUNCTION__);
 410                 }
 411                 while (program_info_length && !error_condition) {               /*      Copy prog descriptors   */
 412                         if (program_info_length > p_ca_message->length) {       /*      Error situation         */
 413                                 dprintk ("%s:\"WARNING\" Length error, line=[%d], prog_info_length=[%d]\n",
 414                                                                 __FUNCTION__, __LINE__, program_info_length);
 415                                 dprintk("%s:\"WARNING\" Bailing out of possible loop\n", __FUNCTION__);
 416                                 error_condition = 1;
 417                                 break;
 418                         }
 419
 420                         hw_buffer->msg[hw_offset] = p_ca_message->msg[buf_offset];
 421                         dprintk(" %02x", p_ca_message->msg[buf_offset]);
 422                         hw_offset++, buf_offset++, hw_buffer_length++, program_info_length--;
 423                 }
 424                 if (verbose > 4) {
 425                         dprintk("]\n");
 426                         dprintk("%s:**********>buf_offset=[%d], hw_offset=[%d]\n", __FUNCTION__, buf_offset, hw_offset);
 427                 }
 428                 if (found_prog_ca_desc) {
 429                         if (!reply) {
 430                                 hw_buffer->msg[13] = 0x01;              /*      OK descrambling                 */
 431                                 if (verbose > 1)
 432                                         dprintk("CA PMT Command = OK Descrambling\n");
 433                         }
 434                         else {
 435                                 hw_buffer->msg[13] = 0x02;              /*      Ok MMI                          */
 436                                 if (verbose > 1)
 437                                         dprintk("CA PMT Command = Ok MMI\n");
 438                         }
 439                         if (query) {
 440                                 hw_buffer->msg[13] = 0x03;              /*      Query                           */
 441                                 if (verbose > 1)
 442                                         dprintk("CA PMT Command = CA PMT query\n");
 443                         }
 444                 }
 445         }
 446         else {
 447                 hw_buffer->msg[11] = hw_buffer->msg[11] & 0xf0;         /*      Don't write to ASIC             */
 448                 hw_buffer->msg[12] = hw_buffer->msg[12] = 0x00;
 449         }
 450         if (verbose > 4)
 451                 dprintk("%s:**********>p_ca_message->length=[%d], buf_offset=[%d], hw_offset=[%d]\n",
 452                                         __FUNCTION__, p_ca_message->length, buf_offset, hw_offset);
 453
 454         while ((buf_offset  < p_ca_message->length)  && !error_condition) {
 455                 /*      Bail out in case of an indefinite loop          */
 456                 if ((es_info_length > p_ca_message->length) || (buf_offset > p_ca_message->length)) {
 457                         dprintk("%s:\"WARNING\" Length error, line=[%d], prog_info_length=[%d], buf_offset=[%d]\n",
 458                                                         __FUNCTION__, __LINE__, program_info_length, buf_offset);
 459
 460                         dprintk("%s:\"WARNING\" Bailing out of possible loop\n", __FUNCTION__);
 461                         error_condition = 1;
 462                         break;
 463                 }
 464
 465                 /*              Stream Header                           */
 466
 467                 for (k = 0; k < 5; k++) {
 468                         hw_buffer->msg[hw_offset + k] = p_ca_message->msg[buf_offset + k];
 469                 }
 470
 471                 es_info_length = 0;
 472                 es_info_length = (es_info_length | (p_ca_message->msg[buf_offset + 3] & 0x0f)) << 8 | p_ca_message->msg[buf_offset + 4];
 473
 474                 if (verbose > 4) {
 475                         dprintk("\n%s:----->Stream header=[%02x %02x %02x %02x %02x]\n", __FUNCTION__,
 476                                 p_ca_message->msg[buf_offset + 0], p_ca_message->msg[buf_offset + 1],
 477                                 p_ca_message->msg[buf_offset + 2], p_ca_message->msg[buf_offset + 3],
 478                                 p_ca_message->msg[buf_offset + 4]);
 479
 480                         dprintk("%s:----->Stream type=[%02x], es length=[%d (0x%x)], Chars=[%02x] [%02x], buf_offset=[%d]\n", __FUNCTION__,
 481                                 p_ca_message->msg[buf_offset + 0], es_info_length, es_info_length,
 482                                 p_ca_message->msg[buf_offset + 3], p_ca_message->msg[buf_offset + 4], buf_offset);
 483                 }
 484
 485                 hw_buffer->msg[hw_offset + 3] &= 0x0f;                  /*      req only 4 bits                 */
 486
 487                 if (found_prog_ca_desc) {
 488                         hw_buffer->msg[hw_offset + 3] = 0x00;
 489                         hw_buffer->msg[hw_offset + 4] = 0x00;
 490                 }
 491
 492                 hw_offset += 5, buf_offset += 5, hw_buffer_length += 5;
 493
 494                 /*              Check for CA descriptor                 */
 495                 if (p_ca_message->msg[buf_offset + 1] == 0x09) {
 496                         if (verbose > 4)
 497                                 dprintk("%s:Found CA descriptor @ Stream level\n", __FUNCTION__);
 498                         found_stream_ca_desc = 1;
 499                 }
 500
 501                 /*              ES descriptors                          */
 502
 503                 if (es_info_length && !error_condition && !found_prog_ca_desc && found_stream_ca_desc) {
 504 //                      if (!ca_pmt_done) {
 505                                 hw_buffer->msg[hw_offset] = p_ca_message->msg[buf_offset];      /*      CA PMT cmd(es)  */
 506                                 if (verbose > 4)
 507                                         printk("%s:----->CA PMT Command ID=[%02x]\n", __FUNCTION__, p_ca_message->msg[buf_offset]);
 508 //                              hw_offset++, buf_offset++, hw_buffer_length++, es_info_length--, ca_pmt_done = 1;
 509                                 hw_offset++, buf_offset++, hw_buffer_length++, es_info_length--;
 510 //                      }
 511                         if (verbose > 4)
 512                                 dprintk("%s:----->ES descriptors=[", __FUNCTION__);
 513
 514                         while (es_info_length && !error_condition) {    /*      ES descriptors                  */
 515                                 if ((es_info_length > p_ca_message->length) || (buf_offset > p_ca_message->length)) {
 516                                         if (verbose > 4) {
 517                                                 dprintk("%s:\"WARNING\" ES Length error, line=[%d], es_info_length=[%d], buf_offset=[%d]\n",
 518                                                                                 __FUNCTION__, __LINE__, es_info_length, buf_offset);
 519
 520                                                 dprintk("%s:\"WARNING\" Bailing out of possible loop\n", __FUNCTION__);
 521                                         }
 522                                         error_condition = 1;
 523                                         break;
 524                                 }
 525
 526                                 hw_buffer->msg[hw_offset] = p_ca_message->msg[buf_offset];
 527                                 if (verbose > 3)
 528                                         dprintk("%02x ", hw_buffer->msg[hw_offset]);
 529                                 hw_offset++, buf_offset++, hw_buffer_length++, es_info_length--;
 530                         }
 531                         found_stream_ca_desc = 0;                       /*      unset for new streams           */
 532                         dprintk("]\n");
 533                 }
 534         }
 535
 536         /*              MCU Magic words                                 */
 537
 538         hw_buffer_length += 7;
 539         hw_buffer->msg[0] = hw_buffer_length;
 540         hw_buffer->msg[1] = 64;
 541         hw_buffer->msg[4] = 3;
 542         hw_buffer->msg[5] = hw_buffer->msg[0] - 7;
 543         hw_buffer->msg[6] = 0;
 544
 545
 546         /*      Fix length      */
 547         hw_buffer->length = hw_buffer->msg[0];
 548
 549         put_checksum(&hw_buffer->msg[0], hw_buffer->msg[0]);
 550         /*      Do the actual write     */
 551         if (verbose > 4) {
 552                 dprintk("%s:======================DEBUGGING================================\n", __FUNCTION__);
 553                 dprintk("%s: Actual Length=[%d]\n", __FUNCTION__, hw_buffer_length);
 554         }
 555         /*      Only for debugging!     */
 556         if (verbose > 2)
 557                 debug_8820_buffer(hw_buffer);
 558         if (verbose > 3)
 559                 dprintk("%s: Reply = [%d]\n", __FUNCTION__, reply);
 560         write_to_8820(state, hw_buffer, reply);
 561
 562         return 0;
 563 }
 564
 565 /*      Board supports CA PMT reply ?           */
 566 static int dst_check_ca_pmt(struct dst_state *state, struct ca_msg *p_ca_message, struct ca_msg *hw_buffer)
 567 {
 568         int ca_pmt_reply_test = 0;
 569
 570         /*      Do test board                   */
 571         /*      Not there yet but soon          */
 572
 573
 574         /*      CA PMT Reply capable            */
 575         if (ca_pmt_reply_test) {
 576                 if ((ca_set_pmt(state, p_ca_message, hw_buffer, 1, GET_REPLY)) < 0) {
 577                         dprintk("%s: ca_set_pmt.. failed !\n", __FUNCTION__);
 578                         return -1;
 579                 }
 580
 581         /*      Process CA PMT Reply            */
 582         /*      will implement soon             */
 583                 dprintk("%s: Not there yet\n", __FUNCTION__);
 584         }
 585         /*      CA PMT Reply not capable        */
 586         if (!ca_pmt_reply_test) {
 587                 if ((ca_set_pmt(state, p_ca_message, hw_buffer, 0, NO_REPLY)) < 0) {
 588                         dprintk("%s: ca_set_pmt.. failed !\n", __FUNCTION__);
 589                         return -1;
 590                 }
 591                 if (verbose > 3)
 592                         dprintk("%s: ca_set_pmt.. success !\n", __FUNCTION__);
 593         /*      put a dummy message             */
 594
 595         }
 596         return 0;
 597 }
 598
 599 static int ca_send_message(struct dst_state *state, struct ca_msg *p_ca_message, void *arg)
 600 {
 601         int i = 0;
 602         unsigned int ca_message_header_len;
 603
 604         u32 command = 0;
 605         struct ca_msg *hw_buffer;
 606
 607         if ((hw_buffer = (struct ca_msg *) kmalloc(sizeof (struct ca_msg), GFP_KERNEL)) == NULL) {
 608                 printk("%s: Memory allocation failure\n", __FUNCTION__);
 609                 return -ENOMEM;
 610         }
 611         if (verbose > 3)
 612                 dprintk("%s\n", __FUNCTION__);
 613
 614         if (copy_from_user(p_ca_message, (void *)arg, sizeof (struct ca_msg)))
 615                 return -EFAULT;
 616
 617         if (p_ca_message->msg) {
 618                 ca_message_header_len = p_ca_message->length;   /*      Restore it back when you are done       */
 619                 /*      EN50221 tag     */
 620                 command = 0;
 621
 622                 for (i = 0; i < 3; i++) {
 623                         command = command | p_ca_message->msg[i];
 624                         if (i < 2)
 625                                 command = command << 8;
 626                 }
 627                 if (verbose > 3)
 628                         dprintk("%s:Command=[0x%x]\n", __FUNCTION__, command);
 629
 630                 switch (command) {
 631                         case CA_PMT:
 632                                 if (verbose > 3)
 633                                         dprintk("Command = SEND_CA_PMT\n");
 634                                 if ((ca_set_pmt(state, p_ca_message, hw_buffer, 0, 0)) < 0) {
 635                                         dprintk("%s: -->CA_PMT Failed !\n", __FUNCTION__);
 636                                         return -1;
 637                                 }
 638                                 if (verbose > 3)
 639                                         dprintk("%s: -->CA_PMT Success !\n", __FUNCTION__);
 640 //                              retval = dummy_set_pmt(state, p_ca_message, hw_buffer, 0, 0);
 641
 642                                 break;
 643
 644                         case CA_PMT_REPLY:
 645                                 if (verbose > 3)
 646                                         dprintk("Command = CA_PMT_REPLY\n");
 647                                 /*      Have to handle the 2 basic types of cards here  */
 648                                 if ((dst_check_ca_pmt(state, p_ca_message, hw_buffer)) < 0) {
 649                                         dprintk("%s: -->CA_PMT_REPLY Failed !\n", __FUNCTION__);
 650                                         return -1;
 651                                 }
 652                                 if (verbose > 3)
 653                                         dprintk("%s: -->CA_PMT_REPLY Success !\n", __FUNCTION__);
 654
 655                                 /*      Certain boards do behave different ?            */
 656 //                              retval = ca_set_pmt(state, p_ca_message, hw_buffer, 1, 1);
 657
 658                         case CA_APP_INFO_ENQUIRY:               // only for debugging
 659                                 if (verbose > 3)
 660                                         dprintk("%s: Getting Cam Application information\n", __FUNCTION__);
 661
 662                                 if ((ca_get_app_info(state)) < 0) {
 663                                         dprintk("%s: -->CA_APP_INFO_ENQUIRY Failed !\n", __FUNCTION__);
 664                                         return -1;
 665                                 }
 666                                 if (verbose > 3)
 667                                         printk("%s: -->CA_APP_INFO_ENQUIRY Success !\n", __FUNCTION__);
 668
 669                                 break;
 670                 }
 671         }
 672         return 0;
 673 }
 674
 675 static int dst_ca_ioctl(struct inode *inode, struct file *file, unsigned int cmd, void *arg)
 676 {
 677         struct dvb_device* dvbdev = (struct dvb_device*) file->private_data;
 678         struct dst_state* state = (struct dst_state*) dvbdev->priv;
 679         struct ca_slot_info *p_ca_slot_info;
 680         struct ca_caps *p_ca_caps;
 681         struct ca_msg *p_ca_message;
 682
 683         if ((p_ca_message = (struct ca_msg *) kmalloc(sizeof (struct ca_msg), GFP_KERNEL)) == NULL) {
 684                 printk("%s: Memory allocation failure\n", __FUNCTION__);
 685                 return -ENOMEM;
 686         }
 687
 688         if ((p_ca_slot_info = (struct ca_slot_info *) kmalloc(sizeof (struct ca_slot_info), GFP_KERNEL)) == NULL) {
 689                 printk("%s: Memory allocation failure\n", __FUNCTION__);
 690                 return -ENOMEM;
 691         }
 692
 693         if ((p_ca_caps = (struct ca_caps *) kmalloc(sizeof (struct ca_caps), GFP_KERNEL)) == NULL) {
 694                 printk("%s: Memory allocation failure\n", __FUNCTION__);
 695                 return -ENOMEM;
 696         }
 697
 698         /*      We have now only the standard ioctl's, the driver is upposed to handle internals.       */
 699         switch (cmd) {
 700                 case CA_SEND_MSG:
 701                         if (verbose > 1)
 702                                 dprintk("%s: Sending message\n", __FUNCTION__);
 703                         if ((ca_send_message(state, p_ca_message, arg)) < 0) {
 704                                 dprintk("%s: -->CA_SEND_MSG Failed !\n", __FUNCTION__);
 705                                 return -1;
 706                         }
 707
 708                         break;
 709
 710                 case CA_GET_MSG:
 711                         if (verbose > 1)
 712                                 dprintk("%s: Getting message\n", __FUNCTION__);
 713                         if ((ca_get_message(state, p_ca_message, arg)) < 0) {
 714                                 dprintk("%s: -->CA_GET_MSG Failed !\n", __FUNCTION__);
 715                                 return -1;
 716                         }
 717                         if (verbose > 1)
 718                                 dprintk("%s: -->CA_GET_MSG Success !\n", __FUNCTION__);
 719
 720                         break;
 721
 722                 case CA_RESET:
 723                         if (verbose > 1)
 724                                 dprintk("%s: Resetting DST\n", __FUNCTION__);
 725                         dst_error_bailout(state);
 726                         msleep(4000);
 727
 728                         break;
 729
 730                 case CA_GET_SLOT_INFO:
 731                         if (verbose > 1)
 732                                 dprintk("%s: Getting Slot info\n", __FUNCTION__);
 733                         if ((ca_get_slot_info(state, p_ca_slot_info, arg)) < 0) {
 734                                 dprintk("%s: -->CA_GET_SLOT_INFO Failed !\n", __FUNCTION__);
 735                                 return -1;
 736                         }
 737                         if (verbose > 1)
 738                                 dprintk("%s: -->CA_GET_SLOT_INFO Success !\n", __FUNCTION__);
 739
 740                         break;
 741
 742                 case CA_GET_CAP:
 743                         if (verbose > 1)
 744                                 dprintk("%s: Getting Slot capabilities\n", __FUNCTION__);
 745                         if ((ca_get_slot_caps(state, p_ca_caps, arg)) < 0) {
 746                                 dprintk("%s: -->CA_GET_CAP Failed !\n", __FUNCTION__);
 747                                 return -1;
 748                         }
 749                         if (verbose > 1)
 750                                 dprintk("%s: -->CA_GET_CAP Success !\n", __FUNCTION__);
 751
 752                         break;
 753
 754                 case CA_GET_DESCR_INFO:
 755                         if (verbose > 1)
 756                                 dprintk("%s: Getting descrambler description\n", __FUNCTION__);
 757                         if ((ca_get_slot_descr(state, p_ca_message, arg)) < 0) {
 758                                 dprintk("%s: -->CA_GET_DESCR_INFO Failed !\n", __FUNCTION__);
 759                                 return -1;
 760                         }
 761                         if (verbose > 1)
 762                                 dprintk("%s: -->CA_GET_DESCR_INFO Success !\n", __FUNCTION__);
 763
 764                         break;
 765
 766                 case CA_SET_DESCR:
 767                         if (verbose > 1)
 768                                 dprintk("%s: Setting descrambler\n", __FUNCTION__);
 769                         if ((ca_set_slot_descr()) < 0) {
 770                                 dprintk("%s: -->CA_SET_DESCR Failed !\n", __FUNCTION__);
 771                                 return -1;
 772                         }
 773                         if (verbose > 1)
 774                                 dprintk("%s: -->CA_SET_DESCR Success !\n", __FUNCTION__);
 775
 776                         break;
 777
 778                 case CA_SET_PID:
 779                         if (verbose > 1)
 780                                 dprintk("%s: Setting PID\n", __FUNCTION__);
 781                         if ((ca_set_pid()) < 0) {
 782                                 dprintk("%s: -->CA_SET_PID Failed !\n", __FUNCTION__);
 783                                 return -1;
 784                         }
 785                         if (verbose > 1)
 786                                 dprintk("%s: -->CA_SET_PID Success !\n", __FUNCTION__);
 787
 788                 default:
 789                         return -EOPNOTSUPP;
 790                 };
 791
 792         return 0;
 793 }
 794
 795 static int dst_ca_open(struct inode *inode, struct file *file)
 796 {
 797         if (verbose > 4)
 798                 dprintk("%s:Device opened [%p]\n", __FUNCTION__, file);
 799         try_module_get(THIS_MODULE);
 800
 801         return 0;
 802 }
 803
 804 static int dst_ca_release(struct inode *inode, struct file *file)
 805 {
 806         if (verbose > 4)
 807                 dprintk("%s:Device closed.\n", __FUNCTION__);
 808         module_put(THIS_MODULE);
 809
 810         return 0;
 811 }
 812
 813 static int dst_ca_read(struct file *file, char __user * buffer, size_t length, loff_t * offset)
 814 {
 815         int bytes_read = 0;
 816
 817         if (verbose > 4)
 818                 dprintk("%s:Device read.\n", __FUNCTION__);
 819
 820         return bytes_read;
 821 }
 822
 823 static int dst_ca_write(struct file *file, const char __user * buffer, size_t length, loff_t * offset)
 824 {
 825         if (verbose > 4)
 826                 dprintk("%s:Device write.\n", __FUNCTION__);
 827
 828         return 0;
 829 }
 830
 831 static struct file_operations dst_ca_fops = {
 832         .owner = THIS_MODULE,
 833         .ioctl = (void *)dst_ca_ioctl,
 834         .open = dst_ca_open,
 835         .release = dst_ca_release,
 836         .read = dst_ca_read,
 837         .write = dst_ca_write
 838 };
 839
 840 static struct dvb_device dvbdev_ca = {
 841         .priv = NULL,
 842         .users = 1,
 843         .readers = 1,
 844         .writers = 1,
 845         .fops = &dst_ca_fops
 846 };
 847
 848 int dst_ca_attach(struct dst_state *dst, struct dvb_adapter *dvb_adapter)
 849 {
 850         struct dvb_device *dvbdev;
 851         if (verbose > 4)
 852                 dprintk("%s:registering DST-CA device\n", __FUNCTION__);
 853         dvb_register_device(dvb_adapter, &dvbdev, &dvbdev_ca, dst, DVB_DEVICE_CA);
 854         return 0;
 855 }
 856
 857 EXPORT_SYMBOL(dst_ca_attach);
 858
 859 MODULE_DESCRIPTION("DST DVB-S/T/C Combo CA driver");
 860 MODULE_AUTHOR("Manu Abraham");
 861 MODULE_LICENSE("GPL");