[Qemu-devel] [PATCH 08/16] scsi: Return SAM status codes

[Kevin Wolf <kwolf@redhat.com>]

From: Hannes Reinecke <hare@suse.de>

Traditionally, the linux stack is using SCSI status codes
which are shifted by one as compared to those defined in SAM.
A SCSI emulation should naturally return the SAM defined codes,
not the linux ones.
So to avoid any confusion this patch modifies the existing
definitions to match those found in SAM and removes any
(now obsolete) byte-shift from the returned status codes.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
 hw/scsi-defs.h    |   20 +++++++++++---------
 hw/scsi-generic.c |   10 +++++-----
 2 files changed, 16 insertions(+), 14 deletions(-)

diff --git a/hw/scsi-defs.h b/hw/scsi-defs.h
index a4a3518..1473ecb 100644
--- a/hw/scsi-defs.h
+++ b/hw/scsi-defs.h
@@ -111,18 +111,20 @@
 #define BLANK 0xa1
 
 /*
- *  Status codes
+ *  SAM Status codes
  */
 
 #define GOOD                 0x00
-#define CHECK_CONDITION      0x01
-#define CONDITION_GOOD       0x02
-#define BUSY                 0x04
-#define INTERMEDIATE_GOOD    0x08
-#define INTERMEDIATE_C_GOOD  0x0a
-#define RESERVATION_CONFLICT 0x0c
-#define COMMAND_TERMINATED   0x11
-#define QUEUE_FULL           0x14
+#define CHECK_CONDITION      0x02
+#define CONDITION_GOOD       0x04
+#define BUSY                 0x08
+#define INTERMEDIATE_GOOD    0x10
+#define INTERMEDIATE_C_GOOD  0x14
+#define RESERVATION_CONFLICT 0x18
+#define COMMAND_TERMINATED   0x22
+#define TASK_SET_FULL        0x28
+#define ACA_ACTIVE           0x30
+#define TASK_ABORTED         0x40
 
 #define STATUS_MASK          0x3e
 
diff --git a/hw/scsi-generic.c b/hw/scsi-generic.c
index 7212091..9be1cca 100644
--- a/hw/scsi-generic.c
+++ b/hw/scsi-generic.c
@@ -96,17 +96,17 @@ static void scsi_command_complete(void *opaque, int ret)
         s->senselen = r->io_header.sb_len_wr;
 
     if (ret != 0)
-        r->req.status = BUSY << 1;
+        r->req.status = BUSY;
     else {
         if (s->driver_status & SG_ERR_DRIVER_TIMEOUT) {
-            r->req.status = BUSY << 1;
+            r->req.status = BUSY;
             BADF("Driver Timeout\n");
         } else if (r->io_header.status)
             r->req.status = r->io_header.status;
         else if (s->driver_status & SG_ERR_DRIVER_SENSE)
-            r->req.status = CHECK_CONDITION << 1;
+            r->req.status = CHECK_CONDITION;
         else
-            r->req.status = GOOD << 1;
+            r->req.status = GOOD;
     }
     DPRINTF("Command complete 0x%p tag=0x%x status=%d\n",
             r, r->req.tag, r->req.status);
@@ -333,7 +333,7 @@ static int32_t scsi_send_command(SCSIDevice *d, uint32_t tag,
         s->senselen = 7;
         s->driver_status = SG_ERR_DRIVER_SENSE;
         bus = scsi_bus_from_device(d);
-        bus->complete(bus, SCSI_REASON_DONE, tag, CHECK_CONDITION << 1);
+        bus->complete(bus, SCSI_REASON_DONE, tag, CHECK_CONDITION);
         return 0;
     }
 
-- 
1.7.2.3