cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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ca.h (4279B)

      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 * This program is free software; you can redistribute it and/or
     10 * modify it under the terms of the GNU General Lesser Public License
     11 * as published by the Free Software Foundation; either version 2.1
     12 * of the License, or (at your option) any later version.
     13 *
     14 * This program is distributed in the hope that it will be useful,
     15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
     16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     17 * GNU General Public License for more details.
     18 *
     19 * You should have received a copy of the GNU Lesser General Public License
     20 * along with this program; if not, write to the Free Software
     21 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
     22 *
     23 */
     24
     25#ifndef _DVBCA_H_
     26#define _DVBCA_H_
     27
     28/**
     29 * struct ca_slot_info - CA slot interface types and info.
     30 *
     31 * @num:	slot number.
     32 * @type:	slot type.
     33 * @flags:	flags applicable to the slot.
     34 *
     35 * This struct stores the CA slot information.
     36 *
     37 * @type can be:
     38 *
     39 *	- %CA_CI - CI high level interface;
     40 *	- %CA_CI_LINK - CI link layer level interface;
     41 *	- %CA_CI_PHYS - CI physical layer level interface;
     42 *	- %CA_DESCR - built-in descrambler;
     43 *	- %CA_SC -simple smart card interface.
     44 *
     45 * @flags can be:
     46 *
     47 *	- %CA_CI_MODULE_PRESENT - module (or card) inserted;
     48 *	- %CA_CI_MODULE_READY - module is ready for usage.
     49 */
     50
     51struct ca_slot_info {
     52	int num;
     53	int type;
     54#define CA_CI            1
     55#define CA_CI_LINK       2
     56#define CA_CI_PHYS       4
     57#define CA_DESCR         8
     58#define CA_SC          128
     59
     60	unsigned int flags;
     61#define CA_CI_MODULE_PRESENT 1
     62#define CA_CI_MODULE_READY   2
     63};
     64
     65
     66/**
     67 * struct ca_descr_info - descrambler types and info.
     68 *
     69 * @num:	number of available descramblers (keys).
     70 * @type:	type of supported scrambling system.
     71 *
     72 * Identifies the number of descramblers and their type.
     73 *
     74 * @type can be:
     75 *
     76 *	- %CA_ECD - European Common Descrambler (ECD) hardware;
     77 *	- %CA_NDS - Videoguard (NDS) hardware;
     78 *	- %CA_DSS - Distributed Sample Scrambling (DSS) hardware.
     79 */
     80struct ca_descr_info {
     81	unsigned int num;
     82	unsigned int type;
     83#define CA_ECD           1
     84#define CA_NDS           2
     85#define CA_DSS           4
     86};
     87
     88/**
     89 * struct ca_caps - CA slot interface capabilities.
     90 *
     91 * @slot_num:	total number of CA card and module slots.
     92 * @slot_type:	bitmap with all supported types as defined at
     93 *		&struct ca_slot_info (e. g. %CA_CI, %CA_CI_LINK, etc).
     94 * @descr_num:	total number of descrambler slots (keys)
     95 * @descr_type:	bitmap with all supported types as defined at
     96 *		&struct ca_descr_info (e. g. %CA_ECD, %CA_NDS, etc).
     97 */
     98struct ca_caps {
     99	unsigned int slot_num;
    100	unsigned int slot_type;
    101	unsigned int descr_num;
    102	unsigned int descr_type;
    103};
    104
    105/**
    106 * struct ca_msg - a message to/from a CI-CAM
    107 *
    108 * @index:	unused
    109 * @type:	unused
    110 * @length:	length of the message
    111 * @msg:	message
    112 *
    113 * This struct carries a message to be send/received from a CI CA module.
    114 */
    115struct ca_msg {
    116	unsigned int index;
    117	unsigned int type;
    118	unsigned int length;
    119	unsigned char msg[256];
    120};
    121
    122/**
    123 * struct ca_descr - CA descrambler control words info
    124 *
    125 * @index: CA Descrambler slot
    126 * @parity: control words parity, where 0 means even and 1 means odd
    127 * @cw: CA Descrambler control words
    128 */
    129struct ca_descr {
    130	unsigned int index;
    131	unsigned int parity;
    132	unsigned char cw[8];
    133};
    134
    135#define CA_RESET          _IO('o', 128)
    136#define CA_GET_CAP        _IOR('o', 129, struct ca_caps)
    137#define CA_GET_SLOT_INFO  _IOR('o', 130, struct ca_slot_info)
    138#define CA_GET_DESCR_INFO _IOR('o', 131, struct ca_descr_info)
    139#define CA_GET_MSG        _IOR('o', 132, struct ca_msg)
    140#define CA_SEND_MSG       _IOW('o', 133, struct ca_msg)
    141#define CA_SET_DESCR      _IOW('o', 134, struct ca_descr)
    142
    143#if !defined(__KERNEL__)
    144
    145/* This is needed for legacy userspace support */
    146typedef struct ca_slot_info ca_slot_info_t;
    147typedef struct ca_descr_info  ca_descr_info_t;
    148typedef struct ca_caps  ca_caps_t;
    149typedef struct ca_msg ca_msg_t;
    150typedef struct ca_descr ca_descr_t;
    151
    152#endif
    153
    154
    155#endif