Instead of having an 'invisible' LUN0 (in case LUN 0 is not connected)
this patch maks LUN0 a enclosure service, exposing it to the OS.
Signed-off-by: Hannes Reinecke <h...@suse.com>
---
hw/scsi/scsi-bus.c | 56 +++++++++++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 55 insertions(+), 1 deletion(-)
diff --git a/hw/scsi/scsi-bus.c b/hw/scsi/scsi-bus.c
index 23c51de..c89e82d 100644
--- a/hw/scsi/scsi-bus.c
+++ b/hw/scsi/scsi-bus.c
@@ -493,10 +493,11 @@ static bool scsi_target_emulate_inquiry(SCSITargetReq *r)
if (r->req.lun != 0) {
r->buf[0] = TYPE_NO_LUN;
} else {
- r->buf[0] = TYPE_NOT_PRESENT | TYPE_INACTIVE;
+ r->buf[0] = TYPE_ENCLOSURE;
r->buf[2] = 5; /* Version */
r->buf[3] = 2 | 0x10; /* HiSup, response data format */
r->buf[4] = r->len - 5; /* Additional Length = (Len - 1) - 4 */
+ r->buf[6] = 0x40; /* Enclosure service */
r->buf[7] = 0x10 | (r->req.bus->info->tcq ? 0x02 : 0); /* Sync, TCQ.
*/
memcpy(&r->buf[8], "QEMU ", 8);
memcpy(&r->buf[16], "QEMU TARGET ", 16);
@@ -505,6 +506,54 @@ static bool scsi_target_emulate_inquiry(SCSITargetReq *r)
return true;
}
+static bool scsi_target_emulate_receive_diagnostic(SCSITargetReq *r)
+{
+ uint8_t page_code = r->req.cmd.buf[2];
+ unsigned char *enc_desc, *type_desc;
+
+ assert(r->req.dev->lun != r->req.lun);
+
+ scsi_target_alloc_buf(&r->req, 0x38);
+
+ switch (page_code) {
+ case 0x00:
+ r->buf[r->len++] = page_code ; /* this page */
+ r->buf[r->len++] = 0x00;
+ r->buf[r->len++] = 0x00;
+ r->buf[r->len++] = 0x03;
+ r->buf[r->len++] = 0x00;
+ r->buf[r->len++] = 0x01;
+ r->buf[r->len++] = 0x08;
+ break;
+ case 0x01:
+ memset(r->buf, 0, 0x38);
+ r->buf[0] = page_code;
+ r->buf[3] = 0x30;
+ enc_desc = &r->buf[8];
+ enc_desc[0] = 0x09;
+ enc_desc[2] = 1;
+ enc_desc[3] = 0x24;
+ memcpy(&enc_desc[12], "QEMU ", 8);
+ memcpy(&enc_desc[20], "QEMU TARGET ", 16);
+ pstrcpy((char *)&enc_desc[36], 4, qemu_hw_version());
+ type_desc = &r->buf[48];
+ type_desc[1] = 1;
+ r->len = 0x38;
+ break;
+ case 0x08:
+ r->buf[0] = page_code;
+ r->buf[1] = 0x00;
+ r->buf[2] = 0x00;
+ r->buf[3] = 0x00;
+ r->len = 4;
+ break;
+ default:
+ return false;
+ }
+ r->len = MIN(r->req.cmd.xfer, r->len);
+ return true;
+}
+
static size_t scsi_sense_len(SCSIRequest *req)
{
if (req->dev->type == TYPE_SCANNER)
@@ -528,6 +577,11 @@ static int32_t scsi_target_send_command(SCSIRequest *req,
uint8_t *buf)
goto illegal_request;
}
break;
+ case RECEIVE_DIAGNOSTIC:
+ if (!scsi_target_emulate_receive_diagnostic(r)) {
+ goto illegal_request;
+ }
+ break;
case REQUEST_SENSE:
scsi_target_alloc_buf(&r->req, scsi_sense_len(req));
r->len = scsi_device_get_sense(r->req.dev, r->buf,
--
1.8.5.6
