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体验新版 GitCode,发现更多精彩内容 >>
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43b978b9
编写于
12月 15, 2011
作者:
P
Paolo Bonzini
浏览文件
操作
浏览文件
下载
电子邮件补丁
差异文件
scsi-disk: add migration support
Signed-off-by:
N
Paolo Bonzini
<
pbonzini@redhat.com
>
上级
56b1fc48
变更
1
隐藏空白更改
内联
并排
Showing
1 changed file
with
55 addition
and
4 deletion
+55
-4
hw/scsi-disk.c
hw/scsi-disk.c
+55
-4
未找到文件。
hw/scsi-disk.c
浏览文件 @
43b978b9
...
...
@@ -111,12 +111,12 @@ static void scsi_cancel_io(SCSIRequest *req)
r
->
req
.
aiocb
=
NULL
;
}
static
uint32_t
scsi_init_iovec
(
SCSIDiskReq
*
r
)
static
uint32_t
scsi_init_iovec
(
SCSIDiskReq
*
r
,
size_t
size
)
{
SCSIDiskState
*
s
=
DO_UPCAST
(
SCSIDiskState
,
qdev
,
r
->
req
.
dev
);
if
(
!
r
->
iov
.
iov_base
)
{
r
->
buflen
=
SCSI_DMA_BUF_SIZE
;
r
->
buflen
=
size
;
r
->
iov
.
iov_base
=
qemu_blockalign
(
s
->
qdev
.
conf
.
bs
,
r
->
buflen
);
}
r
->
iov
.
iov_len
=
MIN
(
r
->
sector_count
*
512
,
r
->
buflen
);
...
...
@@ -124,6 +124,35 @@ static uint32_t scsi_init_iovec(SCSIDiskReq *r)
return
r
->
qiov
.
size
/
512
;
}
static
void
scsi_disk_save_request
(
QEMUFile
*
f
,
SCSIRequest
*
req
)
{
SCSIDiskReq
*
r
=
DO_UPCAST
(
SCSIDiskReq
,
req
,
req
);
qemu_put_be64s
(
f
,
&
r
->
sector
);
qemu_put_be32s
(
f
,
&
r
->
sector_count
);
qemu_put_be32s
(
f
,
&
r
->
buflen
);
if
(
r
->
buflen
&&
r
->
req
.
cmd
.
mode
==
SCSI_XFER_TO_DEV
)
{
qemu_put_buffer
(
f
,
r
->
iov
.
iov_base
,
r
->
iov
.
iov_len
);
}
}
static
void
scsi_disk_load_request
(
QEMUFile
*
f
,
SCSIRequest
*
req
)
{
SCSIDiskReq
*
r
=
DO_UPCAST
(
SCSIDiskReq
,
req
,
req
);
qemu_get_be64s
(
f
,
&
r
->
sector
);
qemu_get_be32s
(
f
,
&
r
->
sector_count
);
qemu_get_be32s
(
f
,
&
r
->
buflen
);
if
(
r
->
buflen
)
{
scsi_init_iovec
(
r
,
r
->
buflen
);
if
(
r
->
req
.
cmd
.
mode
==
SCSI_XFER_TO_DEV
)
{
qemu_get_buffer
(
f
,
r
->
iov
.
iov_base
,
r
->
iov
.
iov_len
);
}
}
qemu_iovec_init_external
(
&
r
->
qiov
,
&
r
->
iov
,
1
);
}
static
void
scsi_dma_complete
(
void
*
opaque
,
int
ret
)
{
SCSIDiskReq
*
r
=
(
SCSIDiskReq
*
)
opaque
;
...
...
@@ -241,7 +270,7 @@ static void scsi_read_data(SCSIRequest *req)
r
->
req
.
aiocb
=
dma_bdrv_read
(
s
->
qdev
.
conf
.
bs
,
r
->
req
.
sg
,
r
->
sector
,
scsi_dma_complete
,
r
);
}
else
{
n
=
scsi_init_iovec
(
r
);
n
=
scsi_init_iovec
(
r
,
SCSI_DMA_BUF_SIZE
);
bdrv_acct_start
(
s
->
qdev
.
conf
.
bs
,
&
r
->
acct
,
n
*
BDRV_SECTOR_SIZE
,
BDRV_ACCT_READ
);
r
->
req
.
aiocb
=
bdrv_aio_readv
(
s
->
qdev
.
conf
.
bs
,
r
->
sector
,
&
r
->
qiov
,
n
,
scsi_read_complete
,
r
);
...
...
@@ -316,7 +345,7 @@ static void scsi_write_complete(void * opaque, int ret)
if
(
r
->
sector_count
==
0
)
{
scsi_req_complete
(
&
r
->
req
,
GOOD
);
}
else
{
scsi_init_iovec
(
r
);
scsi_init_iovec
(
r
,
SCSI_DMA_BUF_SIZE
);
DPRINTF
(
"Write complete tag=0x%x more=%d
\n
"
,
r
->
req
.
tag
,
r
->
qiov
.
size
);
scsi_req_data
(
&
r
->
req
,
r
->
qiov
.
size
);
}
...
...
@@ -1621,6 +1650,8 @@ static const SCSIReqOps scsi_disk_reqops = {
.
write_data
=
scsi_write_data
,
.
cancel_io
=
scsi_cancel_io
,
.
get_buf
=
scsi_get_buf
,
.
load_request
=
scsi_disk_load_request
,
.
save_request
=
scsi_disk_save_request
,
};
static
SCSIRequest
*
scsi_new_request
(
SCSIDevice
*
d
,
uint32_t
tag
,
uint32_t
lun
,
...
...
@@ -1755,6 +1786,22 @@ static Property scsi_hd_properties[] = {
DEFINE_PROP_END_OF_LIST
(),
};
static
const
VMStateDescription
vmstate_scsi_disk_state
=
{
.
name
=
"scsi-disk"
,
.
version_id
=
1
,
.
minimum_version_id
=
1
,
.
minimum_version_id_old
=
1
,
.
fields
=
(
VMStateField
[])
{
VMSTATE_SCSI_DEVICE
(
qdev
,
SCSIDiskState
),
VMSTATE_BOOL
(
media_changed
,
SCSIDiskState
),
VMSTATE_BOOL
(
media_event
,
SCSIDiskState
),
VMSTATE_BOOL
(
eject_request
,
SCSIDiskState
),
VMSTATE_BOOL
(
tray_open
,
SCSIDiskState
),
VMSTATE_BOOL
(
tray_locked
,
SCSIDiskState
),
VMSTATE_END_OF_LIST
()
}
};
static
void
scsi_hd_class_initfn
(
ObjectClass
*
klass
,
void
*
data
)
{
DeviceClass
*
dc
=
DEVICE_CLASS
(
klass
);
...
...
@@ -1768,6 +1815,7 @@ static void scsi_hd_class_initfn(ObjectClass *klass, void *data)
dc
->
desc
=
"virtual SCSI disk"
;
dc
->
reset
=
scsi_disk_reset
;
dc
->
props
=
scsi_hd_properties
;
dc
->
vmsd
=
&
vmstate_scsi_disk_state
;
}
static
TypeInfo
scsi_hd_info
=
{
...
...
@@ -1795,6 +1843,7 @@ static void scsi_cd_class_initfn(ObjectClass *klass, void *data)
dc
->
desc
=
"virtual SCSI CD-ROM"
;
dc
->
reset
=
scsi_disk_reset
;
dc
->
props
=
scsi_cd_properties
;
dc
->
vmsd
=
&
vmstate_scsi_disk_state
;
}
static
TypeInfo
scsi_cd_info
=
{
...
...
@@ -1822,6 +1871,7 @@ static void scsi_block_class_initfn(ObjectClass *klass, void *data)
dc
->
desc
=
"SCSI block device passthrough"
;
dc
->
reset
=
scsi_disk_reset
;
dc
->
props
=
scsi_block_properties
;
dc
->
vmsd
=
&
vmstate_scsi_disk_state
;
}
static
TypeInfo
scsi_block_info
=
{
...
...
@@ -1851,6 +1901,7 @@ static void scsi_disk_class_initfn(ObjectClass *klass, void *data)
dc
->
desc
=
"virtual SCSI disk or CD-ROM (legacy)"
;
dc
->
reset
=
scsi_disk_reset
;
dc
->
props
=
scsi_disk_properties
;
dc
->
vmsd
=
&
vmstate_scsi_disk_state
;
}
static
TypeInfo
scsi_disk_info
=
{
...
...
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