Documentation/linux_tv/ca.h.rst

   1 .. -*- coding: utf-8; mode: rst -*-
   2
   3 file: ca.h
   4 ==========
   5
   6 .. code-block:: c
   7
   8     /*
   9      * ca.h
  10      *
  11      * Copyright (C) 2000 Ralph  Metzler <ralph@convergence.de>
  12      *                  & Marcus Metzler <marcus@convergence.de>
  13      *                    for convergence integrated media GmbH
  14      *
  15      * This program is free software; you can redistribute it and/or
  16      * modify it under the terms of the GNU General Lesser Public License
  17      * as published by the Free Software Foundation; either version 2.1
  18      * of the License, or (at your option) any later version.
  19      *
  20      * This program is distributed in the hope that it will be useful,
  21      * but WITHOUT ANY WARRANTY; without even the implied warranty of
  22      * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  23      * GNU General Public License for more details.
  24      *
  25      * You should have received a copy of the GNU Lesser General Public License
  26      * along with this program; if not, write to the Free Software
  27      * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  28      *
  29      */
  30
  31     #ifndef _DVBCA_H_
  32     #define _DVBCA_H_
  33
  34     /* slot interface types and info */
  35
  36     typedef struct ca_slot_info {
  37             int num;               /* slot number */
  38
  39             int type;              /* CA interface this slot supports */
  40     #define CA_CI            1     /* CI high level interface */
  41     #define CA_CI_LINK       2     /* CI link layer level interface */
  42     #define CA_CI_PHYS       4     /* CI physical layer level interface */
  43     #define CA_DESCR         8     /* built-in descrambler */
  44     #define CA_SC          128     /* simple smart card interface */
  45
  46             unsigned int flags;
  47     #define CA_CI_MODULE_PRESENT 1 /* module (or card) inserted */
  48     #define CA_CI_MODULE_READY   2
  49     } ca_slot_info_t;
  50
  51
  52     /* descrambler types and info */
  53
  54     typedef struct ca_descr_info {
  55             unsigned int num;          /* number of available descramblers (keys) */
  56             unsigned int type;         /* type of supported scrambling system */
  57     #define CA_ECD           1
  58     #define CA_NDS           2
  59     #define CA_DSS           4
  60     } ca_descr_info_t;
  61
  62     typedef struct ca_caps {
  63             unsigned int slot_num;     /* total number of CA card and module slots */
  64             unsigned int slot_type;    /* OR of all supported types */
  65             unsigned int descr_num;    /* total number of descrambler slots (keys) */
  66             unsigned int descr_type;   /* OR of all supported types */
  67     } ca_caps_t;
  68
  69     /* a message to/from a CI-CAM */
  70     typedef struct ca_msg {
  71             unsigned int index;
  72             unsigned int type;
  73             unsigned int length;
  74             unsigned char msg[256];
  75     } ca_msg_t;
  76
  77     typedef struct ca_descr {
  78             unsigned int index;
  79             unsigned int parity;    /* 0 == even, 1 == odd */
  80             unsigned char cw[8];
  81     } ca_descr_t;
  82
  83     typedef struct ca_pid {
  84             unsigned int pid;
  85             int index;              /* -1 == disable*/
  86     } ca_pid_t;
  87
  88     #define CA_RESET          _IO('o', 128)
  89     #define CA_GET_CAP        _IOR('o', 129, ca_caps_t)
  90     #define CA_GET_SLOT_INFO  _IOR('o', 130, ca_slot_info_t)
  91     #define CA_GET_DESCR_INFO _IOR('o', 131, ca_descr_info_t)
  92     #define CA_GET_MSG        _IOR('o', 132, ca_msg_t)
  93     #define CA_SEND_MSG       _IOW('o', 133, ca_msg_t)
  94     #define CA_SET_DESCR      _IOW('o', 134, ca_descr_t)
  95     #define CA_SET_PID        _IOW('o', 135, ca_pid_t)
  96
  97     #endif