Commit 6e2d7be8 authored by Daniel Verkamp's avatar Daniel Verkamp
Browse files

vhost: add copy of virtio headers 



This enables the vhost library to build on systems missing the (fairly
recent) linux/virtio_scsi.h header.

Change-Id: I680863b26961ec3cbe4ad4e575555454f6461bbf
Signed-off-by: default avatarDaniel Verkamp <daniel.verkamp@intel.com>
parent 74da2fad

lib/vhost/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -34,6 +34,7 @@ 
SPDK_ROOT_DIR := $(abspath $(CURDIR)/../..)

include $(SPDK_ROOT_DIR)/mk/spdk.common.mk



CFLAGS += -I.

CFLAGS += -Irte_vhost

CFLAGS += $(ENV_CFLAGS)

lib/vhost/linux/virtio_scsi.h

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/*

 * This header is BSD licensed so anyone can use the definitions to implement

 * compatible drivers/servers.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND

 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE

 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

 * SUCH DAMAGE.

 */



#ifndef _LINUX_VIRTIO_SCSI_H

#define _LINUX_VIRTIO_SCSI_H



#include <linux/virtio_types.h>



/* Default values of the CDB and sense data size configuration fields */

#define VIRTIO_SCSI_CDB_DEFAULT_SIZE   32

#define VIRTIO_SCSI_SENSE_DEFAULT_SIZE 96



#ifndef VIRTIO_SCSI_CDB_SIZE

#define VIRTIO_SCSI_CDB_SIZE VIRTIO_SCSI_CDB_DEFAULT_SIZE

#endif

#ifndef VIRTIO_SCSI_SENSE_SIZE

#define VIRTIO_SCSI_SENSE_SIZE VIRTIO_SCSI_SENSE_DEFAULT_SIZE

#endif



/* SCSI command request, followed by data-out */

struct virtio_scsi_cmd_req {

	__u8 lun[8];		/* Logical Unit Number */

	__virtio64 tag;		/* Command identifier */

	__u8 task_attr;		/* Task attribute */

	__u8 prio;		/* SAM command priority field */

	__u8 crn;

	__u8 cdb[VIRTIO_SCSI_CDB_SIZE];

} __attribute__((packed));



/* SCSI command request, followed by protection information */

struct virtio_scsi_cmd_req_pi {

	__u8 lun[8];		/* Logical Unit Number */

	__virtio64 tag;		/* Command identifier */

	__u8 task_attr;		/* Task attribute */

	__u8 prio;		/* SAM command priority field */

	__u8 crn;

	__virtio32 pi_bytesout;	/* DataOUT PI Number of bytes */

	__virtio32 pi_bytesin;		/* DataIN PI Number of bytes */

	__u8 cdb[VIRTIO_SCSI_CDB_SIZE];

} __attribute__((packed));



/* Response, followed by sense data and data-in */

struct virtio_scsi_cmd_resp {

	__virtio32 sense_len;		/* Sense data length */

	__virtio32 resid;		/* Residual bytes in data buffer */

	__virtio16 status_qualifier;	/* Status qualifier */

	__u8 status;		/* Command completion status */

	__u8 response;		/* Response values */

	__u8 sense[VIRTIO_SCSI_SENSE_SIZE];

} __attribute__((packed));



/* Task Management Request */

struct virtio_scsi_ctrl_tmf_req {

	__virtio32 type;

	__virtio32 subtype;

	__u8 lun[8];

	__virtio64 tag;

} __attribute__((packed));



struct virtio_scsi_ctrl_tmf_resp {

	__u8 response;

} __attribute__((packed));



/* Asynchronous notification query/subscription */

struct virtio_scsi_ctrl_an_req {

	__virtio32 type;

	__u8 lun[8];

	__virtio32 event_requested;

} __attribute__((packed));



struct virtio_scsi_ctrl_an_resp {

	__virtio32 event_actual;

	__u8 response;

} __attribute__((packed));



struct virtio_scsi_event {

	__virtio32 event;

	__u8 lun[8];

	__virtio32 reason;

} __attribute__((packed));



struct virtio_scsi_config {

	__u32 num_queues;

	__u32 seg_max;

	__u32 max_sectors;

	__u32 cmd_per_lun;

	__u32 event_info_size;

	__u32 sense_size;

	__u32 cdb_size;

	__u16 max_channel;

	__u16 max_target;

	__u32 max_lun;

} __attribute__((packed));



/* Feature Bits */

#define VIRTIO_SCSI_F_INOUT                    0

#define VIRTIO_SCSI_F_HOTPLUG                  1

#define VIRTIO_SCSI_F_CHANGE                   2

#define VIRTIO_SCSI_F_T10_PI                   3



/* Response codes */

#define VIRTIO_SCSI_S_OK                       0

#define VIRTIO_SCSI_S_OVERRUN                  1

#define VIRTIO_SCSI_S_ABORTED                  2

#define VIRTIO_SCSI_S_BAD_TARGET               3

#define VIRTIO_SCSI_S_RESET                    4

#define VIRTIO_SCSI_S_BUSY                     5

#define VIRTIO_SCSI_S_TRANSPORT_FAILURE        6

#define VIRTIO_SCSI_S_TARGET_FAILURE           7

#define VIRTIO_SCSI_S_NEXUS_FAILURE            8

#define VIRTIO_SCSI_S_FAILURE                  9

#define VIRTIO_SCSI_S_FUNCTION_SUCCEEDED       10

#define VIRTIO_SCSI_S_FUNCTION_REJECTED        11

#define VIRTIO_SCSI_S_INCORRECT_LUN            12



/* Controlq type codes.  */

#define VIRTIO_SCSI_T_TMF                      0

#define VIRTIO_SCSI_T_AN_QUERY                 1

#define VIRTIO_SCSI_T_AN_SUBSCRIBE             2



/* Valid TMF subtypes.  */

#define VIRTIO_SCSI_T_TMF_ABORT_TASK           0

#define VIRTIO_SCSI_T_TMF_ABORT_TASK_SET       1

#define VIRTIO_SCSI_T_TMF_CLEAR_ACA            2

#define VIRTIO_SCSI_T_TMF_CLEAR_TASK_SET       3

#define VIRTIO_SCSI_T_TMF_I_T_NEXUS_RESET      4

#define VIRTIO_SCSI_T_TMF_LOGICAL_UNIT_RESET   5

#define VIRTIO_SCSI_T_TMF_QUERY_TASK           6

#define VIRTIO_SCSI_T_TMF_QUERY_TASK_SET       7



/* Events.  */

#define VIRTIO_SCSI_T_EVENTS_MISSED            0x80000000

#define VIRTIO_SCSI_T_NO_EVENT                 0

#define VIRTIO_SCSI_T_TRANSPORT_RESET          1

#define VIRTIO_SCSI_T_ASYNC_NOTIFY             2

#define VIRTIO_SCSI_T_PARAM_CHANGE             3



/* Reasons of transport reset event */

#define VIRTIO_SCSI_EVT_RESET_HARD             0

#define VIRTIO_SCSI_EVT_RESET_RESCAN           1

#define VIRTIO_SCSI_EVT_RESET_REMOVED          2



#define VIRTIO_SCSI_S_SIMPLE                   0

#define VIRTIO_SCSI_S_ORDERED                  1

#define VIRTIO_SCSI_S_HEAD                     2

#define VIRTIO_SCSI_S_ACA                      3





#endif /* _LINUX_VIRTIO_SCSI_H */

lib/vhost/linux/virtio_types.h

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#ifndef _LINUX_VIRTIO_TYPES_H

#define _LINUX_VIRTIO_TYPES_H

/* Type definitions for virtio implementations.

 *

 * This header is BSD licensed so anyone can use the definitions to implement

 * compatible drivers/servers.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 * 3. Neither the name of IBM nor the names of its contributors

 *    may be used to endorse or promote products derived from this software

 *    without specific prior written permission.

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND

 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED.  IN NO EVENT SHALL IBM OR CONTRIBUTORS BE LIABLE

 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

 * SUCH DAMAGE.

 *

 * Copyright (C) 2014 Red Hat, Inc.

 * Author: Michael S. Tsirkin <mst@redhat.com>

 */

#include <linux/types.h>



/*

 * __virtio{16,32,64} have the following meaning:

 * - __u{16,32,64} for virtio devices in legacy mode, accessed in native endian

 * - __le{16,32,64} for standard-compliant virtio devices

 */



typedef __u16 __bitwise__ __virtio16;

typedef __u32 __bitwise__ __virtio32;

typedef __u64 __bitwise__ __virtio64;



#endif /* _LINUX_VIRTIO_TYPES_H */