xen/blkback: Move include/xen/blkif.h into drivers/block/xen-blkback/common.h

#include <asm/setup.h>

#include <asm/pgalloc.h>

#include <asm/hypervisor.h>

#include <xen/blkif.h>

#include <xen/grant_table.h>

#include <xen/xenbus.h>

#include <xen/interface/io/ring.h>

#include <xen/interface/io/blkif.h>

#include <xen/interface/io/protocols.h>

#define DRV_PFX "xen-blkback:"

#define DPRINTK(fmt, args...)				\

	pr_debug(DRV_PFX "(%s:%d) " fmt ".\n",	\

		 __func__, __LINE__, ##args)

/* Not a real protocol.  Used to generate ring structs which contain

 * the elements common to all protocols only.  This way we get a

 * compiler-checkable way to use common struct elements, so we can

 * avoid using switch(protocol) in a number of places.  */

struct blkif_common_request {

	char dummy;

};

struct blkif_common_response {

	char dummy;

};

/* i386 protocol version */

#pragma pack(push, 4)

struct blkif_x86_32_request {

	uint8_t        operation;    /* BLKIF_OP_???                         */

	uint8_t        nr_segments;  /* number of segments                   */

	blkif_vdev_t   handle;       /* only for read/write requests         */

	uint64_t       id;           /* private guest value, echoed in resp  */

	blkif_sector_t sector_number;/* start sector idx on disk (r/w only)  */

	struct blkif_request_segment seg[BLKIF_MAX_SEGMENTS_PER_REQUEST];

};

struct blkif_x86_32_response {

	uint64_t        id;              /* copied from request */

	uint8_t         operation;       /* copied from request */

	int16_t         status;          /* BLKIF_RSP_???       */

};

typedef struct blkif_x86_32_request blkif_x86_32_request_t;

typedef struct blkif_x86_32_response blkif_x86_32_response_t;

#pragma pack(pop)

/* x86_64 protocol version */

struct blkif_x86_64_request {

	uint8_t        operation;    /* BLKIF_OP_???                         */

	uint8_t        nr_segments;  /* number of segments                   */

	blkif_vdev_t   handle;       /* only for read/write requests         */

	uint64_t       __attribute__((__aligned__(8))) id;

	blkif_sector_t sector_number;/* start sector idx on disk (r/w only)  */

	struct blkif_request_segment seg[BLKIF_MAX_SEGMENTS_PER_REQUEST];

};

struct blkif_x86_64_response {

	uint64_t       __attribute__((__aligned__(8))) id;

	uint8_t         operation;       /* copied from request */

	int16_t         status;          /* BLKIF_RSP_???       */

};

typedef struct blkif_x86_64_request blkif_x86_64_request_t;

typedef struct blkif_x86_64_response blkif_x86_64_response_t;

DEFINE_RING_TYPES(blkif_common, struct blkif_common_request,

		  struct blkif_common_response);

DEFINE_RING_TYPES(blkif_x86_32, struct blkif_x86_32_request,

		  struct blkif_x86_32_response);

DEFINE_RING_TYPES(blkif_x86_64, struct blkif_x86_64_request,

		  struct blkif_x86_64_response);

union blkif_back_rings {

	struct blkif_back_ring        native;

	struct blkif_common_back_ring common;

	struct blkif_x86_32_back_ring x86_32;

	struct blkif_x86_64_back_ring x86_64;

};

enum blkif_protocol {

	BLKIF_PROTOCOL_NATIVE = 1,

	BLKIF_PROTOCOL_X86_32 = 2,

	BLKIF_PROTOCOL_X86_64 = 3,

};

struct vbd {

	/* What the domain refers to this vbd as. */

	blkif_vdev_t		handle;

/*

 * Permission is hereby granted, free of charge, to any person obtaining a copy

 * of this software and associated documentation files (the "Software"), to

 * deal in the Software without restriction, including without limitation the

 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or

 * sell copies of the Software, and to permit persons to whom the Software is

 * furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER

 * DEALINGS IN THE SOFTWARE.

 */

#ifndef __XEN_BLKIF_H__

#define __XEN_BLKIF_H__

#include <xen/interface/io/ring.h>

#include <xen/interface/io/blkif.h>

#include <xen/interface/io/protocols.h>

/* Not a real protocol.  Used to generate ring structs which contain

 * the elements common to all protocols only.  This way we get a

 * compiler-checkable way to use common struct elements, so we can

 * avoid using switch(protocol) in a number of places.  */

struct blkif_common_request {

	char dummy;

};

struct blkif_common_response {

	char dummy;

};

/* i386 protocol version */

#pragma pack(push, 4)

struct blkif_x86_32_request {

	uint8_t        operation;    /* BLKIF_OP_???                         */

	uint8_t        nr_segments;  /* number of segments                   */

	blkif_vdev_t   handle;       /* only for read/write requests         */

	uint64_t       id;           /* private guest value, echoed in resp  */

	blkif_sector_t sector_number;/* start sector idx on disk (r/w only)  */

	struct blkif_request_segment seg[BLKIF_MAX_SEGMENTS_PER_REQUEST];

};

struct blkif_x86_32_response {

	uint64_t        id;              /* copied from request */

	uint8_t         operation;       /* copied from request */

	int16_t         status;          /* BLKIF_RSP_???       */

};

typedef struct blkif_x86_32_request blkif_x86_32_request_t;

typedef struct blkif_x86_32_response blkif_x86_32_response_t;

#pragma pack(pop)

/* x86_64 protocol version */

struct blkif_x86_64_request {

	uint8_t        operation;    /* BLKIF_OP_???                         */

	uint8_t        nr_segments;  /* number of segments                   */

	blkif_vdev_t   handle;       /* only for read/write requests         */

	uint64_t       __attribute__((__aligned__(8))) id;

	blkif_sector_t sector_number;/* start sector idx on disk (r/w only)  */

	struct blkif_request_segment seg[BLKIF_MAX_SEGMENTS_PER_REQUEST];

};

struct blkif_x86_64_response {

	uint64_t       __attribute__((__aligned__(8))) id;

	uint8_t         operation;       /* copied from request */

	int16_t         status;          /* BLKIF_RSP_???       */

};

typedef struct blkif_x86_64_request blkif_x86_64_request_t;

typedef struct blkif_x86_64_response blkif_x86_64_response_t;

DEFINE_RING_TYPES(blkif_common, struct blkif_common_request,

		  struct blkif_common_response);

DEFINE_RING_TYPES(blkif_x86_32, struct blkif_x86_32_request,

		  struct blkif_x86_32_response);

DEFINE_RING_TYPES(blkif_x86_64, struct blkif_x86_64_request,

		  struct blkif_x86_64_response);

union blkif_back_rings {

	struct blkif_back_ring        native;

	struct blkif_common_back_ring common;

	struct blkif_x86_32_back_ring x86_32;

	struct blkif_x86_64_back_ring x86_64;

};

enum blkif_protocol {

	BLKIF_PROTOCOL_NATIVE = 1,

	BLKIF_PROTOCOL_X86_32 = 2,

	BLKIF_PROTOCOL_X86_64 = 3,

};

#endif /* __XEN_BLKIF_H__ */