summaryrefslogtreecommitdiff
path: root/include/uapi/linux/dvb/ca.h
blob: cb150029fdffab2ece722f7a888ab286a0c310fd (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
/*
 * ca.h
 *
 * Copyright (C) 2000 Ralph  Metzler <ralph@convergence.de>
 *                  & Marcus Metzler <marcus@convergence.de>
 *                    for convergence integrated media GmbH
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Lesser Public License
 * as published by the Free Software Foundation; either version 2.1
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 */

#ifndef _DVBCA_H_
#define _DVBCA_H_

/**
 * struct ca_slot_info - CA slot interface types and info.
 *
 * @num:	slot number.
 * @type:	slot type.
 * @flags:	flags applicable to the slot.
 *
 * This struct stores the CA slot information.
 *
 * @type can be:
 *
 *	- %CA_CI - CI high level interface;
 *	- %CA_CI_LINK - CI link layer level interface;
 *	- %CA_CI_PHYS - CI physical layer level interface;
 *	- %CA_DESCR - built-in descrambler;
 *	- %CA_SC -simple smart card interface.
 *
 * @flags can be:
 *
 *	- %CA_CI_MODULE_PRESENT - module (or card) inserted;
 *	- %CA_CI_MODULE_READY - module is ready for usage.
 */

struct ca_slot_info {
	int num;
	int type;
#define CA_CI            1
#define CA_CI_LINK       2
#define CA_CI_PHYS       4
#define CA_DESCR         8
#define CA_SC          128

	unsigned int flags;
#define CA_CI_MODULE_PRESENT 1
#define CA_CI_MODULE_READY   2
};


/**
 * struct ca_descr_info - descrambler types and info.
 *
 * @num:	number of available descramblers (keys).
 * @type:	type of supported scrambling system.
 *
 * Identifies the number of descramblers and their type.
 *
 * @type can be:
 *
 *	- %CA_ECD - European Common Descrambler (ECD) hardware;
 *	- %CA_NDS - Videoguard (NDS) hardware;
 *	- %CA_DSS - Distributed Sample Scrambling (DSS) hardware.
 */
struct ca_descr_info {
	unsigned int num;
	unsigned int type;
#define CA_ECD           1
#define CA_NDS           2
#define CA_DSS           4
};

/**
 * struct ca_caps - CA slot interface capabilities.
 *
 * @slot_num:	total number of CA card and module slots.
 * @slot_type:	bitmap with all supported types as defined at
 *		&struct ca_slot_info (e. g. %CA_CI, %CA_CI_LINK, etc).
 * @descr_num:	total number of descrambler slots (keys)
 * @descr_type:	bitmap with all supported types as defined at
 *		&struct ca_descr_info (e. g. %CA_ECD, %CA_NDS, etc).
 */
struct ca_caps {
	unsigned int slot_num;
	unsigned int slot_type;
	unsigned int descr_num;
	unsigned int descr_type;
};

/**
 * struct ca_msg - a message to/from a CI-CAM
 *
 * @index:	unused
 * @type:	unused
 * @length:	length of the message
 * @msg:	message
 *
 * This struct carries a message to be send/received from a CI CA module.
 */
struct ca_msg {
	unsigned int index;
	unsigned int type;
	unsigned int length;
	unsigned char msg[256];
};

/**
 * struct ca_descr - CA descrambler control words info
 *
 * @index: CA Descrambler slot
 * @parity: control words parity, where 0 means even and 1 means odd
 * @cw: CA Descrambler control words
 */
struct ca_descr {
	unsigned int index;
	unsigned int parity;
	unsigned char cw[8];
};

#define CA_RESET          _IO('o', 128)
#define CA_GET_CAP        _IOR('o', 129, struct ca_caps)
#define CA_GET_SLOT_INFO  _IOR('o', 130, struct ca_slot_info)
#define CA_GET_DESCR_INFO _IOR('o', 131, struct ca_descr_info)
#define CA_GET_MSG        _IOR('o', 132, struct ca_msg)
#define CA_SEND_MSG       _IOW('o', 133, struct ca_msg)
#define CA_SET_DESCR      _IOW('o', 134, struct ca_descr)

#if !defined(__KERNEL__)

/* This is needed for legacy userspace support */
typedef struct ca_slot_info ca_slot_info_t;
typedef struct ca_descr_info  ca_descr_info_t;
typedef struct ca_caps  ca_caps_t;
typedef struct ca_msg ca_msg_t;
typedef struct ca_descr ca_descr_t;

#endif


#endif