/*
 *  Driver for the NXP SAA7164 PCIe bridge
 *
 *  Copyright (c) 2009 Steven Toth <stoth@kernellabs.com>
 *
 *  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.
 *
 *  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 General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

/* TODO: Cleanup and shorten the namespace */

/* Some structues are passed directly to/from the firmware and
 * have strict alignment requirements. This is one of them.
 */
typedef struct {
	u8	bLength;
	u8	bDescriptorType;
	u8	bDescriptorSubtype;
	u16	bcdSpecVersion;
	u32	dwClockFrequency;
	u32	dwClockUpdateRes;
	u8	bCapabilities;
	u32	dwDeviceRegistersLocation;
	u32	dwHostMemoryRegion;
	u32	dwHostMemoryRegionSize;
	u32	dwHostHibernatMemRegion;
	u32	dwHostHibernatMemRegionSize;
} __attribute__((packed)) tmComResHWDescr_t;

/* This is DWORD aligned on windows but I can't find the right
 * gcc syntax to match the binary data from the device.
 * I've manually padded with Reserved[3] bytes to match the hardware,
 * but this could break if GCC decies to pack in a different way.
 */
typedef struct {
	u8	bLength;
	u8	bDescriptorType;
	u8	bDescriptorSubtype;
	u8	bFlags;
	u8	bInterfaceType;
	u8	bInterfaceId;
	u8	bBaseInterface;
	u8	bInterruptId;
	u8	bDebugInterruptId;
	u8	BARLocation;
	u8	Reserved[3];
} tmComResInterfaceDescr_t;

typedef struct {
	u64	CommandRing;
	u64	ResponseRing;
	u32	CommandWrite;
	u32	CommandRead;
	u32	ResponseWrite;
	u32	ResponseRead;
} tmComResBusDescr_t;

typedef enum {
	NONE		= 0,
	TYPE_BUS_PCI	= 1,
	TYPE_BUS_PCIe	= 2,
	TYPE_BUS_USB	= 3,
	TYPE_BUS_I2C	= 4
} tmBusType_t;

typedef struct {
	tmBusType_t Type;
	u16	m_wMaxReqSize;
	u8	*m_pdwSetRing;
	u32	m_dwSizeSetRing;
	u8	*m_pdwGetRing;
	u32	m_dwSizeGetRing;
	u32	*m_pdwSetWritePos;
	u32	*m_pdwSetReadPos;
	u32	*m_pdwGetWritePos;
	u32	*m_pdwGetReadPos;

	/* All access is protected */
	struct mutex lock;

} tmComResBusInfo_t;

typedef struct {
	u8	id;
	u8	flags;
	u16	size;
	u32	command;
	u16	controlselector;
	u8	seqno;
} __attribute__((packed)) tmComResInfo_t;

typedef enum {
	SET_CUR  = 0x01,
	GET_CUR  = 0x81,
	GET_MIN  = 0x82,
	GET_MAX  = 0x83,
	GET_RES  = 0x84,
	GET_LEN  = 0x85,
	GET_INFO = 0x86,
	GET_DEF  = 0x87
} tmComResCmd_t;

struct cmd {
	u8 seqno;
	u32 inuse;
	u32 timeout;
	u32 signalled;
	struct mutex lock;
	wait_queue_head_t wait;
};

typedef struct {
	u32	pathid;
	u32	size;
	void	*descriptor;
} tmDescriptor_t;

typedef struct {
	u8	len;
	u8	type;
	u8	subtype;
	u8	unitid;
} __attribute__((packed)) tmComResDescrHeader_t;

typedef struct {
	u8	len;
	u8	type;
	u8	subtype;
	u8	unitid;
	u32	devicetype;
	u16	deviceid;
	u32	numgpiopins;
	u8	numgpiogroups;
	u8	controlsize;
} __attribute__((packed)) tmComResExtDevDescrHeader_t;

typedef struct {
	u32	pin;
	u8	state;
} __attribute__((packed)) tmComResGPIO_t;

typedef struct {
	u8	len;
	u8	type;
	u8	subtype;
	u8	pathid;
} __attribute__((packed)) tmComResPathDescrHeader_t;

/* terminaltype */
typedef enum {
	ITT_ANTENNA              = 0x0203,
	LINE_CONNECTOR           = 0x0603,
	SPDIF_CONNECTOR          = 0x0605,
	COMPOSITE_CONNECTOR      = 0x0401,
	SVIDEO_CONNECTOR         = 0x0402,
	COMPONENT_CONNECTOR      = 0x0403,
	STANDARD_DMA             = 0xF101
} tmComResTermType_t;

typedef struct {
	u8	len;
	u8	type;
	u8	subtype;
	u8	terminalid;
	u16	terminaltype;
	u8	assocterminal;
	u8	iterminal;
	u8	controlsize;
} __attribute__((packed)) tmComResAntTermDescrHeader_t;

typedef struct {
	u8	len;
	u8	type;
	u8	subtype;
	u8	unitid;
	u8	sourceid;
	u8	iunit;
	u32	tuningstandards;
	u8	controlsize;
	u32	controls;
} __attribute__((packed)) tmComResTunerDescrHeader_t;

typedef enum {
	/* the buffer does not contain any valid data */
	TM_BUFFER_FLAG_EMPTY,

	/* the buffer is filled with valid data */
	TM_BUFFER_FLAG_DONE,

	/* the buffer is the dummy buffer - TODO??? */
	TM_BUFFER_FLAG_DUMMY_BUFFER
} tmBufferFlag_t;

typedef struct {
	u64		*pagetablevirt;
	u64		pagetablephys;
	u16		offset;
	u8		*context;
	u64		timestamp;
	tmBufferFlag_t	BufferFlag_t;
	u32		lostbuffers;
	u32		validbuffers;
	u64		*dummypagevirt;
	u64		dummypagephys;
	u64		*addressvirt;
} tmBuffer_t;

typedef struct {
	u32	bitspersample;
	u32	samplesperline;
	u32	numberoflines;
	u32	pitch;
	u32	linethreshold;
	u64	**pagetablelistvirt;
	u64	*pagetablelistphys;
	u32	numpagetables;
	u32	numpagetableentries;
} tmHWStreamParameters_t;

typedef struct {
	tmHWStreamParameters_t		HWStreamParameters_t;
	u64				qwDummyPageTablePhys;
	u64				*pDummyPageTableVirt;
} tmStreamParameters_t;

typedef struct {
	u8	len;
	u8	type;
	u8	subtyle;
	u8	unitid;
	u16	terminaltype;
	u8	assocterminal;
	u8	sourceid;
	u8	iterminal;
	u32	BARLocation;
	u8	flags;
	u8	interruptid;
	u8	buffercount;
	u8	metadatasize;
	u8	numformats;
	u8	controlsize;
} __attribute__((packed)) tmComResDMATermDescrHeader_t;

/*
 *
 * Description:
 *  This is the transport stream format header.
 *
 * Settings:
 *  bLength                 - The size of this descriptor in bytes.
 *  bDescriptorType         - CS_INTERFACE.
 *  bDescriptorSubtype      - VS_FORMAT_MPEG2TS descriptor subtype.
 *  bFormatIndex            - A non-zero constant that uniquely identifies the
 *                            format.
 *  bDataOffset             - Offset to TSP packet within MPEG-2 TS transport
 *                            stride, in bytes.
 *  bPacketLength           - Length of TSP packet, in bytes (typically 188).
 *  bStrideLength           - Length of MPEG-2 TS transport stride.
 *  guidStrideFormat        - A Globally Unique Identifier indicating the
 *                            format of the stride data (if any). Set to zeros
 *                            if there is no Stride Data, or if the Stride
 *                            Data is to be ignored by the application.
 *
 */
typedef struct {
	u8	len;
	u8	type;
	u8	subtype;
	u8	bFormatIndex;
	u8	bDataOffset;
	u8	bPacketLength;
	u8	bStrideLength;
	u8	guidStrideFormat[16];
} __attribute__((packed)) tmComResTSFormatDescrHeader_t;