path: root/drivers/media/dvb/firewire/firedtv-avc.c

/*
 * FireDTV driver (formerly known as FireSAT)
 *
 * Copyright (C) 2004 Andreas Monitzer <andy@monitzer.com>
 * Copyright (C) 2008 Ben Backx <ben@bbackx.com>
 * Copyright (C) 2008 Henrik Kurelid <henrik@kurelid.se>
 *
 *	This program is free software; you can redistribute it and/or
 *	modify it under the terms of the GNU General Public License as
 *	published by the Free Software Foundation; either version 2 of
 *	the License, or (at your option) any later version.
 */

#include <linux/bug.h>
#include <linux/crc32.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/jiffies.h>
#include <linux/kernel.h>
#include <linux/moduleparam.h>
#include <linux/mutex.h>
#include <linux/string.h>
#include <linux/stringify.h>
#include <linux/wait.h>
#include <linux/workqueue.h>

#include "firedtv.h"

#define FCP_COMMAND_REGISTER		0xfffff0000b00ULL

#define AVC_CTYPE_CONTROL		0x0
#define AVC_CTYPE_STATUS		0x1
#define AVC_CTYPE_NOTIFY		0x3

#define AVC_RESPONSE_ACCEPTED		0x9
#define AVC_RESPONSE_STABLE		0xc
#define AVC_RESPONSE_CHANGED		0xd
#define AVC_RESPONSE_INTERIM		0xf

#define AVC_SUBUNIT_TYPE_TUNER		(0x05 << 3)
#define AVC_SUBUNIT_TYPE_UNIT		(0x1f << 3)

#define AVC_OPCODE_VENDOR		0x00
#define AVC_OPCODE_READ_DESCRIPTOR	0x09
#define AVC_OPCODE_DSIT			0xc8
#define AVC_OPCODE_DSD			0xcb

#define DESCRIPTOR_TUNER_STATUS 	0x80
#define DESCRIPTOR_SUBUNIT_IDENTIFIER	0x00

#define SFE_VENDOR_DE_COMPANYID_0	0x00 /* OUI of Digital Everywhere */
#define SFE_VENDOR_DE_COMPANYID_1	0x12
#define SFE_VENDOR_DE_COMPANYID_2	0x87

#define SFE_VENDOR_OPCODE_REGISTER_REMOTE_CONTROL 0x0a
#define SFE_VENDOR_OPCODE_LNB_CONTROL		0x52
#define SFE_VENDOR_OPCODE_TUNE_QPSK		0x58 /* for DVB-S */

#define SFE_VENDOR_OPCODE_GET_FIRMWARE_VERSION	0x00
#define SFE_VENDOR_OPCODE_HOST2CA		0x56
#define SFE_VENDOR_OPCODE_CA2HOST		0x57
#define SFE_VENDOR_OPCODE_CISTATUS		0x59
#define SFE_VENDOR_OPCODE_TUNE_QPSK2		0x60 /* for DVB-S2 */

#define SFE_VENDOR_TAG_CA_RESET			0x00
#define SFE_VENDOR_TAG_CA_APPLICATION_INFO	0x01
#define SFE_VENDOR_TAG_CA_PMT			0x02
#define SFE_VENDOR_TAG_CA_DATE_TIME		0x04
#define SFE_VENDOR_TAG_CA_MMI			0x05
#define SFE_VENDOR_TAG_CA_ENTER_MENU		0x07

#define EN50221_LIST_MANAGEMENT_ONLY	0x03
#define EN50221_TAG_APP_INFO		0x9f8021
#define EN50221_TAG_CA_INFO		0x9f8031

struct avc_command_frame {
	int length;
	u8 ctype;
	u8 subunit;
	u8 opcode;
	u8 operand[509];
};

struct avc_response_frame {
	int length;
	u8 response;
	u8 subunit;
	u8 opcode;
	u8 operand[509];
};

#define AVC_DEBUG_FCP_SUBACTIONS	1
#define AVC_DEBUG_FCP_PAYLOADS		2

static int avc_debug;
module_param_named(debug, avc_debug, int, 0644);
MODULE_PARM_DESC(debug, "Verbose logging (default = 0"
	", FCP subactions = "	__stringify(AVC_DEBUG_FCP_SUBACTIONS)
	", FCP payloads = "	__stringify(AVC_DEBUG_FCP_PAYLOADS)
	", or all = -1)");

static const char *debug_fcp_ctype(unsigned int ctype)
{
	static const char *ctypes[] = {
		[0x0] = "CONTROL",		[0x1] = "STATUS",
		[0x2] = "SPECIFIC INQUIRY",	[0x3] = "NOTIFY",
		[0x4] = "GENERAL INQUIRY",	[0x8] = "NOT IMPLEMENTED",
		[0x9] = "ACCEPTED",		[0xa] = "REJECTED",
		[0xb] = "IN TRANSITION",	[0xc] = "IMPLEMENTED/STABLE",
		[0xd] = "CHANGED&quo