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| author | Christian Hoff <christian.hoff@de.ibm.com> | 2012-06-14 15:55:27 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2012-07-02 11:27:00 +0200 |
| commit | 40723a99b8c406143f27538846103f98942e4e24 (patch) | |
| tree | 19eff7566c5c0286854e06e51bb70d86bde7b637 /hw/scsi-bus.c | |
| parent | 28b70c9dbdce0d517ade9c04c7d7ae05c8b76d2f (diff) | |
| download | qemu-40723a99b8c406143f27538846103f98942e4e24.zip qemu-40723a99b8c406143f27538846103f98942e4e24.tar.gz qemu-40723a99b8c406143f27538846103f98942e4e24.tar.bz2 | |
scsi: Add basic support for SCSI media changer commands.
This adds basic support for SCSI media changer commands.
Not all commands are supported as of now, but enough to cover
basic functionality.
Signed-off-by: Christian Hoff <christian.hoff@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'hw/scsi-bus.c')
| -rw-r--r-- | hw/scsi-bus.c | 45 |
1 files changed, 39 insertions, 6 deletions
diff --git a/hw/scsi-bus.c b/hw/scsi-bus.c index 4ec9b52..9c64e30 100644 --- a/hw/scsi-bus.c +++ b/hw/scsi-bus.c @@ -770,7 +770,6 @@ static int scsi_req_length(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf) case SET_CD_SPEED: case SET_LIMITS: case WRITE_LONG_10: - case MOVE_MEDIUM: case UPDATE_BLOCK: case RESERVE_TRACK: case SET_READ_AHEAD: @@ -914,6 +913,29 @@ static int scsi_req_stream_length(SCSICommand *cmd, SCSIDevice *dev, uint8_t *bu return 0; } +static int scsi_req_medium_changer_length(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf) +{ + switch (buf[0]) { + /* medium changer commands */ + case EXCHANGE_MEDIUM: + case INITIALIZE_ELEMENT_STATUS: + case INITIALIZE_ELEMENT_STATUS_WITH_RANGE: + case MOVE_MEDIUM: + case POSITION_TO_ELEMENT: + cmd->xfer = 0; + break; + case READ_ELEMENT_STATUS: + cmd->xfer = buf[9] | (buf[8] << 8) | (buf[7] << 16); + break; + + /* generic commands */ + default: + return scsi_req_length(cmd, dev, buf); + } + return 0; +} + + static void scsi_cmd_xfer_mode(SCSICommand *cmd) { if (!cmd->xfer) { @@ -1011,11 +1033,18 @@ int scsi_req_parse(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf) return -1; } - if (dev->type == TYPE_TAPE) { + switch (dev->type) { + case TYPE_TAPE: rc = scsi_req_stream_length(cmd, dev, buf); - } else { + break; + case TYPE_MEDIUM_CHANGER: + rc = scsi_req_medium_changer_length(cmd, dev, buf); + break; + default: rc = scsi_req_length(cmd, dev, buf); + break; } + if (rc != 0) return rc; @@ -1193,7 +1222,8 @@ static const char *scsi_command_name(uint8_t cmd) [ REQUEST_SENSE ] = "REQUEST_SENSE", [ FORMAT_UNIT ] = "FORMAT_UNIT", [ READ_BLOCK_LIMITS ] = "READ_BLOCK_LIMITS", - [ REASSIGN_BLOCKS ] = "REASSIGN_BLOCKS", + [ REASSIGN_BLOCKS ] = "REASSIGN_BLOCKS/INITIALIZE ELEMENT STATUS", + /* LOAD_UNLOAD and INITIALIZE_ELEMENT_STATUS use the same operation code */ [ READ_6 ] = "READ_6", [ WRITE_6 ] = "WRITE_6", [ SET_CAPACITY ] = "SET_CAPACITY", @@ -1218,7 +1248,8 @@ static const char *scsi_command_name(uint8_t cmd) [ READ_CAPACITY_10 ] = "READ_CAPACITY_10", [ READ_10 ] = "READ_10", [ WRITE_10 ] = "WRITE_10", - [ SEEK_10 ] = "SEEK_10", + [ SEEK_10 ] = "SEEK_10/POSITION_TO_ELEMENT", + /* SEEK_10 and POSITION_TO_ELEMENT use the same operation code */ [ WRITE_VERIFY_10 ] = "WRITE_VERIFY_10", [ VERIFY_10 ] = "VERIFY_10", [ SEARCH_HIGH ] = "SEARCH_HIGH", @@ -1229,7 +1260,8 @@ static const char *scsi_command_name(uint8_t cmd) /* READ_POSITION and PRE_FETCH use the same operation code */ [ SYNCHRONIZE_CACHE ] = "SYNCHRONIZE_CACHE", [ LOCK_UNLOCK_CACHE ] = "LOCK_UNLOCK_CACHE", - [ READ_DEFECT_DATA ] = "READ_DEFECT_DATA", + [ READ_DEFECT_DATA ] = "READ_DEFECT_DATA/INITIALIZE_ELEMENT_STATUS_WITH_RANGE", + /* READ_DEFECT_DATA and INITIALIZE_ELEMENT_STATUS_WITH_RANGE use the same operation code */ [ MEDIUM_SCAN ] = "MEDIUM_SCAN", [ COMPARE ] = "COMPARE", [ COPY_VERIFY ] = "COPY_VERIFY", @@ -1274,6 +1306,7 @@ static const char *scsi_command_name(uint8_t cmd) [ REPORT_LUNS ] = "REPORT_LUNS", [ BLANK ] = "BLANK", [ MOVE_MEDIUM ] = "MOVE_MEDIUM", + [ EXCHANGE_MEDIUM ] = "EXCHANGE MEDIUM", [ LOAD_UNLOAD ] = "LOAD_UNLOAD", [ READ_12 ] = "READ_12", [ WRITE_12 ] = "WRITE_12", |