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[Qemu-devel] [PATCH 5/5] virtio-scsi: implement parse_cdb
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [PATCH 5/5] virtio-scsi: implement parse_cdb |
Date: |
Wed, 16 Jul 2014 14:54:50 +0200 |
Enable passthrough of vendor-specific commands.
Signed-off-by: Paolo Bonzini <address@hidden>
---
hw/scsi/virtio-scsi.c | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
diff --git a/hw/scsi/virtio-scsi.c b/hw/scsi/virtio-scsi.c
index 0eb069a..e8f4c0c 100644
--- a/hw/scsi/virtio-scsi.c
+++ b/hw/scsi/virtio-scsi.c
@@ -406,6 +406,29 @@ static void virtio_scsi_command_complete(SCSIRequest *r,
uint32_t status,
virtio_scsi_complete_cmd_req(req);
}
+static int virtio_scsi_parse_cdb(SCSIDevice *dev, SCSICommand *cmd,
+ uint8_t *buf, void *hba_private)
+{
+ VirtIOSCSIReq *req = hba_private;
+
+ cmd->lba = -1;
+ cmd->len = MIN(VIRTIO_SCSI_CDB_SIZE, SCSI_CMD_BUF_SIZE);
+ memcpy(cmd->buf, buf, cmd->len);
+
+ /* Extract the direction and mode directly from the request, for
+ * host device passthrough.
+ */
+ cmd->xfer = req->qsgl.size;
+ if (cmd->xfer == 0) {
+ cmd->mode = SCSI_XFER_NONE;
+ } else if (iov_size(req->elem.in_sg, req->elem.in_num) > req->resp_size) {
+ cmd->mode = SCSI_XFER_FROM_DEV;
+ } else {
+ cmd->mode = SCSI_XFER_TO_DEV;
+ }
+ return 0;
+}
+
static QEMUSGList *virtio_scsi_get_sg_list(SCSIRequest *r)
{
VirtIOSCSIReq *req = r->hba_private;
@@ -658,6 +681,7 @@ static struct SCSIBusInfo virtio_scsi_scsi_info = {
.change = virtio_scsi_change,
.hotplug = virtio_scsi_hotplug,
.hot_unplug = virtio_scsi_hot_unplug,
+ .parse_cdb = virtio_scsi_parse_cdb,
.get_sg_list = virtio_scsi_get_sg_list,
.save_request = virtio_scsi_save_request,
.load_request = virtio_scsi_load_request,
--
1.9.3
- [Qemu-devel] [PATCH for-2.2 0/5] scsi: enable passthrough of vendor-specific commands, Paolo Bonzini, 2014/07/16
- [Qemu-devel] [PATCH 3/5] scsi-block: extract scsi_block_is_passthrough, Paolo Bonzini, 2014/07/16
- [Qemu-devel] [PATCH 2/5] scsi-bus: introduce parse_cdb in SCSIDeviceClass and SCSIBusInfo, Paolo Bonzini, 2014/07/16
- [Qemu-devel] [PATCH 1/5] scsi-bus: prepare scsi_req_new for introduction of parse_cdb, Paolo Bonzini, 2014/07/16
- [Qemu-devel] [PATCH 4/5] scsi-block, scsi-generic: implement parse_cdb, Paolo Bonzini, 2014/07/16
- [Qemu-devel] [PATCH 5/5] virtio-scsi: implement parse_cdb,
Paolo Bonzini <=
- Re: [Qemu-devel] [PATCH for-2.2 0/5] scsi: enable passthrough of vendor-specific commands, TAMUKI Shoichi, 2014/07/18