zig

fork of https://codeberg.org/ziglang/zig
Log | Files | Refs | README | LICENSE

ca.h (3509B) - Raw

      1 /* SPDX-License-Identifier: LGPL-2.1+ WITH Linux-syscall-note */
      2 /*
      3  * ca.h
      4  *
      5  * Copyright (C) 2000 Ralph  Metzler <ralph@convergence.de>
      6  *                  & Marcus Metzler <marcus@convergence.de>
      7  *                    for convergence integrated media GmbH
      8  */
      9 
     10 #ifndef _DVBCA_H_
     11 #define _DVBCA_H_
     12 
     13 /**
     14  * struct ca_slot_info - CA slot interface types and info.
     15  *
     16  * @num:	slot number.
     17  * @type:	slot type.
     18  * @flags:	flags applicable to the slot.
     19  *
     20  * This struct stores the CA slot information.
     21  *
     22  * @type can be:
     23  *
     24  *	- %CA_CI - CI high level interface;
     25  *	- %CA_CI_LINK - CI link layer level interface;
     26  *	- %CA_CI_PHYS - CI physical layer level interface;
     27  *	- %CA_DESCR - built-in descrambler;
     28  *	- %CA_SC -simple smart card interface.
     29  *
     30  * @flags can be:
     31  *
     32  *	- %CA_CI_MODULE_PRESENT - module (or card) inserted;
     33  *	- %CA_CI_MODULE_READY - module is ready for usage.
     34  */
     35 
     36 struct ca_slot_info {
     37 	int num;
     38 	int type;
     39 #define CA_CI            1
     40 #define CA_CI_LINK       2
     41 #define CA_CI_PHYS       4
     42 #define CA_DESCR         8
     43 #define CA_SC          128
     44 
     45 	unsigned int flags;
     46 #define CA_CI_MODULE_PRESENT 1
     47 #define CA_CI_MODULE_READY   2
     48 };
     49 
     50 
     51 /**
     52  * struct ca_descr_info - descrambler types and info.
     53  *
     54  * @num:	number of available descramblers (keys).
     55  * @type:	type of supported scrambling system.
     56  *
     57  * Identifies the number of descramblers and their type.
     58  *
     59  * @type can be:
     60  *
     61  *	- %CA_ECD - European Common Descrambler (ECD) hardware;
     62  *	- %CA_NDS - Videoguard (NDS) hardware;
     63  *	- %CA_DSS - Distributed Sample Scrambling (DSS) hardware.
     64  */
     65 struct ca_descr_info {
     66 	unsigned int num;
     67 	unsigned int type;
     68 #define CA_ECD           1
     69 #define CA_NDS           2
     70 #define CA_DSS           4
     71 };
     72 
     73 /**
     74  * struct ca_caps - CA slot interface capabilities.
     75  *
     76  * @slot_num:	total number of CA card and module slots.
     77  * @slot_type:	bitmap with all supported types as defined at
     78  *		&struct ca_slot_info (e. g. %CA_CI, %CA_CI_LINK, etc).
     79  * @descr_num:	total number of descrambler slots (keys)
     80  * @descr_type:	bitmap with all supported types as defined at
     81  *		&struct ca_descr_info (e. g. %CA_ECD, %CA_NDS, etc).
     82  */
     83 struct ca_caps {
     84 	unsigned int slot_num;
     85 	unsigned int slot_type;
     86 	unsigned int descr_num;
     87 	unsigned int descr_type;
     88 };
     89 
     90 /**
     91  * struct ca_msg - a message to/from a CI-CAM
     92  *
     93  * @index:	unused
     94  * @type:	unused
     95  * @length:	length of the message
     96  * @msg:	message
     97  *
     98  * This struct carries a message to be send/received from a CI CA module.
     99  */
    100 struct ca_msg {
    101 	unsigned int index;
    102 	unsigned int type;
    103 	unsigned int length;
    104 	unsigned char msg[256];
    105 };
    106 
    107 /**
    108  * struct ca_descr - CA descrambler control words info
    109  *
    110  * @index: CA Descrambler slot
    111  * @parity: control words parity, where 0 means even and 1 means odd
    112  * @cw: CA Descrambler control words
    113  */
    114 struct ca_descr {
    115 	unsigned int index;
    116 	unsigned int parity;
    117 	unsigned char cw[8];
    118 };
    119 
    120 #define CA_RESET          _IO('o', 128)
    121 #define CA_GET_CAP        _IOR('o', 129, struct ca_caps)
    122 #define CA_GET_SLOT_INFO  _IOR('o', 130, struct ca_slot_info)
    123 #define CA_GET_DESCR_INFO _IOR('o', 131, struct ca_descr_info)
    124 #define CA_GET_MSG        _IOR('o', 132, struct ca_msg)
    125 #define CA_SEND_MSG       _IOW('o', 133, struct ca_msg)
    126 #define CA_SET_DESCR      _IOW('o', 134, struct ca_descr)
    127 
    128 
    129 /* This is needed for legacy userspace support */
    130 typedef struct ca_slot_info ca_slot_info_t;
    131 typedef struct ca_descr_info  ca_descr_info_t;
    132 typedef struct ca_caps  ca_caps_t;
    133 typedef struct ca_msg ca_msg_t;
    134 typedef struct ca_descr ca_descr_t;
    135 
    136 
    137 
    138 #endif