154 lines
4.1 KiB
C
154 lines
4.1 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ WITH Linux-syscall-note */
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/*
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* ca.h
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*
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* Copyright (C) 2000 Ralph Metzler <ralph@convergence.de>
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* & Marcus Metzler <marcus@convergence.de>
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* for convergence integrated media GmbH
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Lesser Public License
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* as published by the Free Software Foundation; either version 2.1
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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*/
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#ifndef _DVBCA_H_
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#define _DVBCA_H_
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/**
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* struct ca_slot_info - CA slot interface types and info.
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*
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* @num: slot number.
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* @type: slot type.
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* @flags: flags applicable to the slot.
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*
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* This struct stores the CA slot information.
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*
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* @type can be:
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*
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* - %CA_CI - CI high level interface;
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* - %CA_CI_LINK - CI link layer level interface;
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* - %CA_CI_PHYS - CI physical layer level interface;
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* - %CA_DESCR - built-in descrambler;
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* - %CA_SC -simple smart card interface.
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*
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* @flags can be:
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*
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* - %CA_CI_MODULE_PRESENT - module (or card) inserted;
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* - %CA_CI_MODULE_READY - module is ready for usage.
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*/
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struct ca_slot_info {
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int num;
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int type;
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#define CA_CI 1
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#define CA_CI_LINK 2
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#define CA_CI_PHYS 4
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#define CA_DESCR 8
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#define CA_SC 128
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unsigned int flags;
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#define CA_CI_MODULE_PRESENT 1
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#define CA_CI_MODULE_READY 2
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};
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/**
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* struct ca_descr_info - descrambler types and info.
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*
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* @num: number of available descramblers (keys).
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* @type: type of supported scrambling system.
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*
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* Identifies the number of descramblers and their type.
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*
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* @type can be:
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*
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* - %CA_ECD - European Common Descrambler (ECD) hardware;
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* - %CA_NDS - Videoguard (NDS) hardware;
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* - %CA_DSS - Distributed Sample Scrambling (DSS) hardware.
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*/
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struct ca_descr_info {
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unsigned int num;
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unsigned int type;
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#define CA_ECD 1
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#define CA_NDS 2
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#define CA_DSS 4
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};
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/**
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* struct ca_caps - CA slot interface capabilities.
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*
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* @slot_num: total number of CA card and module slots.
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* @slot_type: bitmap with all supported types as defined at
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* &struct ca_slot_info (e. g. %CA_CI, %CA_CI_LINK, etc).
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* @descr_num: total number of descrambler slots (keys)
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* @descr_type: bitmap with all supported types as defined at
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* &struct ca_descr_info (e. g. %CA_ECD, %CA_NDS, etc).
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*/
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struct ca_caps {
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unsigned int slot_num;
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unsigned int slot_type;
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unsigned int descr_num;
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unsigned int descr_type;
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};
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/**
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* struct ca_msg - a message to/from a CI-CAM
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*
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* @index: unused
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* @type: unused
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* @length: length of the message
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* @msg: message
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*
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* This struct carries a message to be send/received from a CI CA module.
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*/
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struct ca_msg {
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unsigned int index;
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unsigned int type;
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unsigned int length;
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unsigned char msg[256];
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};
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/**
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* struct ca_descr - CA descrambler control words info
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*
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* @index: CA Descrambler slot
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* @parity: control words parity, where 0 means even and 1 means odd
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* @cw: CA Descrambler control words
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*/
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struct ca_descr {
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unsigned int index;
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unsigned int parity;
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unsigned char cw[8];
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};
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#define CA_RESET _IO('o', 128)
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#define CA_GET_CAP _IOR('o', 129, struct ca_caps)
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#define CA_GET_SLOT_INFO _IOR('o', 130, struct ca_slot_info)
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#define CA_GET_DESCR_INFO _IOR('o', 131, struct ca_descr_info)
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#define CA_GET_MSG _IOR('o', 132, struct ca_msg)
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#define CA_SEND_MSG _IOW('o', 133, struct ca_msg)
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#define CA_SET_DESCR _IOW('o', 134, struct ca_descr)
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/* This is needed for legacy userspace support */
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typedef struct ca_slot_info ca_slot_info_t;
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typedef struct ca_descr_info ca_descr_info_t;
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typedef struct ca_caps ca_caps_t;
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typedef struct ca_msg ca_msg_t;
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typedef struct ca_descr ca_descr_t;
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#endif
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