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scsi: parse 16-byte tape CDBs 

The transfer length for these commands is different from the transfer
length of the corresponding disk commands, so parse it specially.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2012-05-04 10:28:55 +02:00
parent f62d059460
commit 065c25996b
2 changed files with 11 additions and 0 deletions
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10
hw/scsi-bus.c
View File

@ -891,6 +891,16 @@ static int scsi_req_stream_length(SCSICommand *cmd, SCSIDevice *dev, uint8_t *bu
cmd->xfer *= dev->blocksize;
}
break;
case READ_16:
case READ_REVERSE_16:
case VERIFY_16:
case WRITE_16:
cmd->len = 16;
cmd->xfer = buf[14] | (buf[13] << 8) | (buf[12] << 16);
if (buf[1] & 0x01) { /* fixed */
cmd->xfer *= dev->blocksize;
}
break;
case REWIND:
case START_STOP:
cmd->len = 6;

1
hw/scsi-defs.h
View File

@ -92,6 +92,7 @@
#define PERSISTENT_RESERVE_OUT 0x5f
#define VARLENGTH_CDB 0x7f
#define WRITE_FILEMARKS_16 0x80
#define READ_REVERSE_16 0x81
#define ALLOW_OVERWRITE 0x82
#define EXTENDED_COPY 0x83
#define ATA_PASSTHROUGH 0x85