9143d5f0f1
Because Qemu only accept an wwpn argument for vhost-scsi, we cannot assign a tpgt. That's say tpg is transparent for Qemu, Qemu doesn't know which tpg can boot, but vhost-scsi driver module doesn't know too for one assigned wwpn. At present, we assume that the first tpg can boot only, and add a boot_tpgt property that defaults to 0. Of course, people can pass a valid value by qemu command line. Suggested-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Gonglei <arei.gonglei@huawei.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
79 lines
2.2 KiB
C
79 lines
2.2 KiB
C
/*
|
|
* vhost_scsi host device
|
|
*
|
|
* Copyright IBM, Corp. 2011
|
|
*
|
|
* Authors:
|
|
* Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
|
|
*
|
|
* This work is licensed under the terms of the GNU LGPL, version 2 or later.
|
|
* See the COPYING.LIB file in the top-level directory.
|
|
*
|
|
*/
|
|
|
|
#ifndef VHOST_SCSI_H
|
|
#define VHOST_SCSI_H
|
|
|
|
#include "qemu-common.h"
|
|
#include "hw/qdev.h"
|
|
#include "hw/virtio/virtio-scsi.h"
|
|
#include "hw/virtio/vhost.h"
|
|
|
|
/*
|
|
* Used by QEMU userspace to ensure a consistent vhost-scsi ABI.
|
|
*
|
|
* ABI Rev 0: July 2012 version starting point for v3.6-rc merge candidate +
|
|
* RFC-v2 vhost-scsi userspace. Add GET_ABI_VERSION ioctl usage
|
|
* ABI Rev 1: January 2013. Ignore vhost_tpgt filed in struct vhost_scsi_target.
|
|
* All the targets under vhost_wwpn can be seen and used by guest.
|
|
*/
|
|
|
|
#define VHOST_SCSI_ABI_VERSION 1
|
|
|
|
/* TODO #include <linux/vhost.h> properly */
|
|
/* For VHOST_SCSI_SET_ENDPOINT/VHOST_SCSI_CLEAR_ENDPOINT ioctl */
|
|
struct vhost_scsi_target {
|
|
int abi_version;
|
|
char vhost_wwpn[224];
|
|
unsigned short vhost_tpgt;
|
|
unsigned short reserved;
|
|
};
|
|
|
|
enum vhost_scsi_vq_list {
|
|
VHOST_SCSI_VQ_CONTROL = 0,
|
|
VHOST_SCSI_VQ_EVENT = 1,
|
|
VHOST_SCSI_VQ_NUM_FIXED = 2,
|
|
};
|
|
|
|
#define VHOST_VIRTIO 0xAF
|
|
#define VHOST_SCSI_SET_ENDPOINT _IOW(VHOST_VIRTIO, 0x40, struct vhost_scsi_target)
|
|
#define VHOST_SCSI_CLEAR_ENDPOINT _IOW(VHOST_VIRTIO, 0x41, struct vhost_scsi_target)
|
|
#define VHOST_SCSI_GET_ABI_VERSION _IOW(VHOST_VIRTIO, 0x42, int)
|
|
|
|
#define TYPE_VHOST_SCSI "vhost-scsi"
|
|
#define VHOST_SCSI(obj) \
|
|
OBJECT_CHECK(VHostSCSI, (obj), TYPE_VHOST_SCSI)
|
|
|
|
typedef struct VHostSCSI {
|
|
VirtIOSCSICommon parent_obj;
|
|
|
|
Error *migration_blocker;
|
|
|
|
struct vhost_dev dev;
|
|
int32_t bootindex;
|
|
int channel;
|
|
int target;
|
|
int lun;
|
|
} VHostSCSI;
|
|
|
|
#define DEFINE_VHOST_SCSI_PROPERTIES(_state, _conf_field) \
|
|
DEFINE_PROP_STRING("vhostfd", _state, _conf_field.vhostfd), \
|
|
DEFINE_PROP_STRING("wwpn", _state, _conf_field.wwpn), \
|
|
DEFINE_PROP_UINT32("boot_tpgt", _state, _conf_field.boot_tpgt, 0), \
|
|
DEFINE_PROP_UINT32("num_queues", _state, _conf_field.num_queues, 1), \
|
|
DEFINE_PROP_UINT32("max_sectors", _state, _conf_field.max_sectors, 0xFFFF), \
|
|
DEFINE_PROP_UINT32("cmd_per_lun", _state, _conf_field.cmd_per_lun, 128)
|
|
|
|
|
|
#endif
|