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/* SPDX-License-Identifier: LGPL-2.1+ WITH Linux-syscall-note */

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* ca.h

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* & Marcus Metzler <marcus@convergence.de>

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* for convergence integrated media GmbH

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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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* 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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* 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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#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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* @num: slot number.

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* @type: slot type.

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* @flags: flags applicable to the slot.

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* This struct stores the CA slot information.

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* @type can be:

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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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* @flags can be:

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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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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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* @num: number of available descramblers (keys).

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* @type: type of supported scrambling system.

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* Identifies the number of descramblers and their type.

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* @type can be:

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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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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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* @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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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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* @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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* This struct carries a message to be send/received from a CI CA module.

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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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* @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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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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