diff options
| author | Hannes Reinecke <hare@suse.de> | 2011-04-18 13:36:02 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2011-05-26 12:14:16 +0200 |
| commit | 74382217ca8f25a530c9f63e6b523e6259d7719a (patch) | |
| tree | 5075f9599c392fde8019c06a293662ee27922ea1 /hw/scsi-generic.c | |
| parent | 0c34459b6af1b7ed2f000995b9bcb1c722646fbb (diff) | |
scsi: Implement 'get_sense' callback
The get_sense callback copies existing sense information into
the provided buffer. This is required if sense information
should be transferred together with the command response.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'hw/scsi-generic.c')
| -rw-r--r-- | hw/scsi-generic.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/hw/scsi-generic.c b/hw/scsi-generic.c index 90f2a4af1..fc015e075 100644 --- a/hw/scsi-generic.c +++ b/hw/scsi-generic.c @@ -79,6 +79,23 @@ static void scsi_clear_sense(SCSIGenericState *s) s->driver_status = 0; } +static int scsi_get_sense(SCSIRequest *req, uint8_t *outbuf, int len) +{ + SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, req->dev); + int size = SCSI_SENSE_BUF_SIZE; + + if (!(s->driver_status & SG_ERR_DRIVER_SENSE)) { + size = scsi_build_sense(SENSE_CODE(NO_SENSE), s->sensebuf, + SCSI_SENSE_BUF_SIZE, 0); + } + if (size > len) { + size = len; + } + memcpy(outbuf, s->sensebuf, size); + + return size; +} + static SCSIRequest *scsi_new_request(SCSIDevice *d, uint32_t tag, uint32_t lun) { SCSIRequest *req; @@ -535,6 +552,7 @@ static SCSIDeviceInfo scsi_generic_info = { .write_data = scsi_write_data, .cancel_io = scsi_cancel_io, .get_buf = scsi_get_buf, + .get_sense = scsi_get_sense, .qdev.props = (Property[]) { DEFINE_BLOCK_PROPERTIES(SCSIGenericState, qdev.conf), DEFINE_PROP_END_OF_LIST(), |