diff mbox

[09/15] scsi-generic: add migration support

Message ID 1326731457-9056-10-git-send-email-pbonzini@redhat.com
State New
Headers show

Commit Message

Paolo Bonzini Jan. 16, 2012, 4:30 p.m. UTC 
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 hw/scsi-generic.c |   25 +++++++++++++++++++++++++
 1 files changed, 25 insertions(+), 0 deletions(-)
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Patch

diff --git a/hw/scsi-generic.c b/hw/scsi-generic.c
index 0aebcdd..12d7d15 100644
--- a/hw/scsi-generic.c
+++ b/hw/scsi-generic.c
@@ -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,
@@ -463,6 +487,7 @@  static SCSIDeviceInfo scsi_generic_info = {
     .qdev.desc    = "pass through generic scsi device (/dev/sg*)",
     .qdev.size    = sizeof(SCSIDevice),
     .qdev.reset   = scsi_generic_reset,
+    .qdev.vmsd    = &vmstate_scsi_device,
     .init         = scsi_generic_initfn,
     .destroy      = scsi_destroy,
     .alloc_req    = scsi_new_request,