diff options
| author | aliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162> | 2009-01-28 21:58:29 +0000 |
|---|---|---|
| committer | aliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162> | 2009-01-28 21:58:29 +0000 |
| commit | c1c0438c800df9579c9ed5385e3cf198ed03d562 (patch) | |
| tree | 598ac2fa71fab9c9045b7cadbf1651b9f58141f1 /hw | |
| parent | 86106e5920d90a92d72ca50ca5aadafd6c1f6c80 (diff) | |
SCSI divide capacity by s->cluster_size (Rik van Riel)
Paul Brook pointed out that the number of sectors reported
by the SCSI read capacity commands needs to be divided by
s->cluster_size, because bdrv_get_geometry reports the number
of 512 byte sectors, while emulated CDROMs report 2048 byte
sectors back to the guest.
This has no consequences for emulated hard disks, which use
a cluster size of 1.
aliguori: fixed typo
Signed-off-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6469 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/scsi-disk.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/hw/scsi-disk.c b/hw/scsi-disk.c index 434c3cb367..bc12e3fc23 100644 --- a/hw/scsi-disk.c +++ b/hw/scsi-disk.c @@ -734,6 +734,7 @@ static int32_t scsi_send_command(SCSIDevice *d, uint32_t tag, /* The normal LEN field for this command is zero. */ memset(outbuf, 0, 8); bdrv_get_geometry(s->bdrv, &nb_sectors); + nb_sectors /= s->cluster_size; /* Returned value is the address of the last sector. */ if (nb_sectors) { nb_sectors--; @@ -834,6 +835,7 @@ static int32_t scsi_send_command(SCSIDevice *d, uint32_t tag, DPRINTF("SAI READ CAPACITY(16)\n"); memset(outbuf, 0, len); bdrv_get_geometry(s->bdrv, &nb_sectors); + nb_sectors /= s->cluster_size; /* Returned value is the address of the last sector. */ if (nb_sectors) { nb_sectors--; |