69 lines
1.9 KiB
C
69 lines
1.9 KiB
C
/******************************************************************************
|
|
* Copyright (c) 2012 IBM Corporation
|
|
* All rights reserved.
|
|
* This program and the accompanying materials
|
|
* are made available under the terms of the BSD License
|
|
* which accompanies this distribution, and is available at
|
|
* http://www.opensource.org/licenses/bsd-license.php
|
|
*
|
|
* Contributors:
|
|
* IBM Corporation - initial implementation
|
|
*****************************************************************************/
|
|
|
|
/*
|
|
* Virtio SCSI Host device definitions.
|
|
* See Virtio Spec, Appendix I, for details
|
|
*/
|
|
|
|
#ifndef _VIRTIO_SCSI_H
|
|
#define _VIRTIO_SCSI_H
|
|
|
|
#define VIRTIO_SCSI_CDB_SIZE 32
|
|
#define VIRTIO_SCSI_SENSE_SIZE 96
|
|
|
|
#define VIRTIO_SCSI_CONTROL_VQ 0
|
|
#define VIRTIO_SCSI_EVENT_VQ 1
|
|
#define VIRTIO_SCSI_REQUEST_VQ 2
|
|
|
|
struct virtio_scsi_config
|
|
{
|
|
uint32_t num_queues;
|
|
uint32_t seg_max;
|
|
uint32_t max_sectors;
|
|
uint32_t cmd_per_lun;
|
|
uint32_t event_info_size;
|
|
uint32_t sense_size;
|
|
uint32_t cdb_size;
|
|
uint16_t max_channel;
|
|
uint16_t max_target;
|
|
uint32_t max_lun;
|
|
} __attribute__((packed));
|
|
|
|
/* This is the first element of the "out" scatter-gather list. */
|
|
struct virtio_scsi_req_cmd {
|
|
uint8_t lun[8];
|
|
uint64_t tag;
|
|
uint8_t task_attr;
|
|
uint8_t prio;
|
|
uint8_t crn;
|
|
char cdb[VIRTIO_SCSI_CDB_SIZE];
|
|
} __attribute__((packed));
|
|
|
|
/* This is the first element of the "in" scatter-gather list. */
|
|
struct virtio_scsi_resp_cmd {
|
|
uint32_t sense_len;
|
|
uint32_t residual;
|
|
uint16_t status_qualifier;
|
|
uint8_t status;
|
|
uint8_t response;
|
|
uint8_t sense[VIRTIO_SCSI_SENSE_SIZE];
|
|
};
|
|
|
|
extern int virtioscsi_init(struct virtio_device *dev);
|
|
extern void virtioscsi_shutdown(struct virtio_device *dev);
|
|
extern int virtioscsi_send(struct virtio_device *dev,
|
|
struct virtio_scsi_req_cmd *req,
|
|
struct virtio_scsi_resp_cmd *resp,
|
|
int is_read, void *buf, uint64_t buf_len);
|
|
|
|
#endif /* _VIRTIO_SCSI_H */
|