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| author | Bernhard Kohl <bernhard.kohl@nsn.com> | 2010-09-06 11:50:55 +0200 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2010-09-08 12:39:18 +0200 |
| commit | ebef0bbb1a8b5420a50e887972cc6bf0d150f9b7 (patch) | |
| tree | c0ec69bfa6e57f57ee890990d22a6b733c85b27c | |
| parent | 79d1d3311319f3390f540f547becaba9d957f84c (diff) | |
| download | qemu-ebef0bbb1a8b5420a50e887972cc6bf0d150f9b7.tar.gz qemu-ebef0bbb1a8b5420a50e887972cc6bf0d150f9b7.tar.bz2 qemu-ebef0bbb1a8b5420a50e887972cc6bf0d150f9b7.zip | |
scsi-disk: add some optional scsi commands
I use a legacy OS which depends on some optional SCSI commands.
In fact this implementation does nothing special, but provides minimum
support for the following commands:
REZERO UNIT
WRITE AND VERIFY(10)
WRITE AND VERIFY(12)
WRITE AND VERIFY(16)
MODE SELECT(6)
MODE SELECT(10)
SEEK(6)
SEEK(10)
Signed-off-by: Bernhard Kohl <bernhard.kohl@nsn.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
| -rw-r--r-- | hw/scsi-disk.c | 36 |
1 files changed, 35 insertions, 1 deletions
diff --git a/hw/scsi-disk.c b/hw/scsi-disk.c index b80c9bd2c3..1446ca634c 100644 --- a/hw/scsi-disk.c +++ b/hw/scsi-disk.c @@ -892,6 +892,12 @@ static int scsi_disk_emulate_command(SCSIRequest *req, uint8_t *outbuf) break; case VERIFY: break; + case REZERO_UNIT: + DPRINTF("Rezero Unit\n"); + if (!bdrv_is_inserted(s->bs)) { + goto not_ready; + } + break; default: goto illegal_request; } @@ -1011,6 +1017,7 @@ static int32_t scsi_send_command(SCSIDevice *d, uint32_t tag, case SERVICE_ACTION_IN: case REPORT_LUNS: case VERIFY: + case REZERO_UNIT: rc = scsi_disk_emulate_command(&r->req, outbuf); if (rc > 0) { r->iov.iov_len = rc; @@ -1034,13 +1041,40 @@ static int32_t scsi_send_command(SCSIDevice *d, uint32_t tag, case WRITE_10: case WRITE_12: case WRITE_16: - DPRINTF("Write (sector %" PRId64 ", count %d)\n", lba, len); + case WRITE_VERIFY: + case WRITE_VERIFY_12: + case WRITE_VERIFY_16: + DPRINTF("Write %s(sector %" PRId64 ", count %d)\n", + (command & 0xe) == 0xe ? "And Verify " : "", lba, len); if (lba > s->max_lba) goto illegal_lba; r->sector = lba * s->cluster_size; r->sector_count = len * s->cluster_size; is_write = 1; break; + case MODE_SELECT: + DPRINTF("Mode Select(6) (len %d)\n", len); + /* We don't support mode parameter changes. + Allow the mode parameter header + block descriptors only. */ + if (len > 12) { + goto fail; + } + break; + case MODE_SELECT_10: + DPRINTF("Mode Select(10) (len %d)\n", len); + /* We don't support mode parameter changes. + Allow the mode parameter header + block descriptors only. */ + if (len > 16) { + goto fail; + } + break; + case SEEK_6: + case SEEK_10: + DPRINTF("Seek(%d) (sector %" PRId64 ")\n", command == SEEK_6 ? 6 : 10, lba); + if (lba > s->max_lba) { + goto illegal_lba; + } + break; default: DPRINTF("Unknown SCSI command (%2.2x)\n", buf[0]); fail: |