gwj / at91sam9263 · Commits

Commit c1c0438c800df9579c9ed5385e3cf198ed03d562

Authored by aliguori
1 parent 86106e59

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
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Showing 1 changed file with 2 additions and 0 deletions
hw/scsi-disk.c
  View file @c1c0438
... ... @@ -734,6 +734,7 @@ static int32_t scsi_send_command(SCSIDevice *d, uint32_t tag,
734 734 /* The normal LEN field for this command is zero. */
735 735 memset(outbuf, 0, 8);
736 736 bdrv_get_geometry(s->bdrv, &nb_sectors);
  737 + nb_sectors /= s->cluster_size;
737 738 /* Returned value is the address of the last sector. */
738 739 if (nb_sectors) {
739 740 nb_sectors--;
... ... @@ -834,6 +835,7 @@ static int32_t scsi_send_command(SCSIDevice *d, uint32_t tag,
834 835 DPRINTF("SAI READ CAPACITY(16)\n");
835 836 memset(outbuf, 0, len);
836 837 bdrv_get_geometry(s->bdrv, &nb_sectors);
  838 + nb_sectors /= s->cluster_size;
837 839 /* Returned value is the address of the last sector. */
838 840 if (nb_sectors) {
839 841 nb_sectors--;
... ...