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scsi-generic: add migration support 

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2011-12-15 07:24:30 -05:00
parent 63f740dd9e
commit 56b1fc4823
1 changed files with 25 additions and 0 deletions
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25
hw/scsi-generic.c
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@ -59,6 +59,28 @@ typedef struct SCSIGenericReq {
sg_io_hdr_t io_header;
} SCSIGenericReq;
static void scsi_generic_save_request(QEMUFile *f, SCSIRequest *req)
{
SCSIGenericReq *r = DO_UPCAST(SCSIGenericReq, req, req);
qemu_put_sbe32s(f, &r->buflen);
if (r->buflen && r->req.cmd.mode == SCSI_XFER_TO_DEV) {
assert(!r->req.sg);
qemu_put_buffer(f, r->buf, r->req.cmd.xfer);
}
}
static void scsi_generic_load_request(QEMUFile *f, SCSIRequest *req)
{
SCSIGenericReq *r = DO_UPCAST(SCSIGenericReq, req, req);
qemu_get_sbe32s(f, &r->buflen);
if (r->buflen && r->req.cmd.mode == SCSI_XFER_TO_DEV) {
assert(!r->req.sg);
qemu_get_buffer(f, r->buf, r->req.cmd.xfer);
}
}
static void scsi_free_request(SCSIRequest *req)
{
SCSIGenericReq *r = DO_UPCAST(SCSIGenericReq, req, req);
@ -446,6 +468,8 @@ const SCSIReqOps scsi_generic_req_ops = {
.write_data = scsi_write_data,
.cancel_io = scsi_cancel_io,
.get_buf = scsi_get_buf,
.load_request = scsi_generic_load_request,
.save_request = scsi_generic_save_request,
};
static SCSIRequest *scsi_new_request(SCSIDevice *d, uint32_t tag, uint32_t lun,
@ -474,6 +498,7 @@ static void scsi_generic_class_initfn(ObjectClass *klass, void *data)
dc->desc = "pass through generic scsi device (/dev/sg*)";
dc->reset = scsi_generic_reset;
dc->props = scsi_generic_properties;
dc->vmsd = &vmstate_scsi_device;
}
static TypeInfo scsi_generic_info = {