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s390/tape: Remove unused command definitions

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Quite a few command definitions are either not used or don't exist for
3490 tape devices on Virtual Tape Servers (VTS). Cleanup the list, which
makes it easier to understand what commands are actually implemented by
the driver. The lists below outline the exact reason for the removal.
Description for existing commands are adapted to reflect the removal of
support for old device types.

The following commands don't exist in VTS for 3490 devices and are
unused:
INVALID_00              0x00
DIAG_MODE_SET		0x0B
FORCE_STREAM_CNT	0xEB
LOOP_WRITE_TO_READ	0x8B
MODE_SET_C3		0xC3
MODE_SET_CB		0xCB
MODE_SET_D3		0xD3
NEW_MODE_SET		0xEB
RELEASE			0xD4
REQ_TRK_IN_ERROR	0x1B
RESERVE			0xF4
SET_DIAGNOSE		0x4B

The following command definitions are not used:
CONTROL_ACCESS		0xE3
PERF_SUBSYS_FUNC	0x77
READ_BACKWARD		0x0C
READ_BUFFER		0x12
READ_BUFF_LOG		0x24
READ_CONFIG_DATA	0xFA
READ_DEV_CHAR		0x64
READ_MESSAGE_ID		0x4E
READ_SUBSYS_DATA	0x3E
SENSE_GROUP_ID		0x34
SENSE_ID		0xE4
SET_GROUP_ID		0xAF
SET_INTERFACE_ID	0x73
SET_TAPE_WRITE_IMMED	0xC3
SUSPEND			0x5B
SYNC			0x43

Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
Reviewed-by: Jens Remus <jremus@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
This commit is contained in:
Jan Höppner 2026-02-02 14:48:42 +01:00 • committed by Heiko Carstens
parent 28da74c294
commit 516fbb4852
1 changed files with 5 additions and 33 deletions
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38
drivers/s390/char/tape_std.h
View file

@ -19,53 +19,25 @@
/*
* The CCW commands for the Tape type of command.
*/
#define INVALID_00 0x00 /* Invalid cmd */
#define BACKSPACEBLOCK 0x27 /* Back Space block */
#define BACKSPACEFILE 0x2f /* Back Space file */
#define DATA_SEC_ERASE 0x97 /* Data security erase */
#define ERASE_GAP 0x17 /* Erase Gap */
#define FORSPACEBLOCK 0x37 /* Forward space block */
#define FORSPACEFILE 0x3F /* Forward Space file */
#define FORCE_STREAM_CNT 0xEB /* Forced streaming count # */
#define NOP 0x03 /* No operation */
#define READ_FORWARD 0x02 /* Read forward */
#define REWIND 0x07 /* Rewind */
#define REWIND_UNLOAD 0x0F /* Rewind and Unload */
#define SENSE 0x04 /* Sense */
#define NEW_MODE_SET 0xEB /* Guess it is Mode set */
#define WRITE_CMD 0x01 /* Write */
#define WRITETAPEMARK 0x1F /* Write Tape Mark */
#define ASSIGN 0xB7 /* 3420 REJECT,3480 OK */
#define CONTROL_ACCESS 0xE3 /* Set high speed */
#define DIAG_MODE_SET 0x0B /* 3420 NOP, 3480 REJECT */
#define LOCATE 0x4F /* 3420 REJ, 3480 NOP */
#define LOOP_WRITE_TO_READ 0x8B /* 3480 REJECT */
#define MODE_SET_DB 0xDB /* 3420 REJECT,3480 OK */
#define MODE_SET_C3 0xC3 /* for 3420 */
#define MODE_SET_CB 0xCB /* for 3420 */
#define MODE_SET_D3 0xD3 /* for 3420 */
#define READ_BACKWARD 0x0C /* */
#define READ_BLOCK_ID 0x22 /* 3420 REJECT,3480 OK */
#define READ_BUFFER 0x12 /* 3420 REJECT,3480 OK */
#define READ_BUFF_LOG 0x24 /* 3420 REJECT,3480 OK */
#define RELEASE 0xD4 /* 3420 NOP, 3480 REJECT */
#define REQ_TRK_IN_ERROR 0x1B /* 3420 NOP, 3480 REJECT */
#define RESERVE 0xF4 /* 3420 NOP, 3480 REJECT */
#define SENSE_GROUP_ID 0x34 /* 3420 REJECT,3480 OK */
#define SENSE_ID 0xE4 /* 3420 REJECT,3480 OK */
#define READ_DEV_CHAR 0x64 /* Read device characteristics */
#define SET_DIAGNOSE 0x4B /* 3420 NOP, 3480 REJECT */
#define SET_GROUP_ID 0xAF /* 3420 REJECT,3480 OK */
#define SET_TAPE_WRITE_IMMED 0xC3 /* for 3480 */
#define SUSPEND 0x5B /* 3420 REJ, 3480 NOP */
#define SYNC 0x43 /* Synchronize (flush buffer) */
#define UNASSIGN 0xC7 /* 3420 REJECT,3480 OK */
#define PERF_SUBSYS_FUNC 0x77 /* 3490 CMD */
#define READ_CONFIG_DATA 0xFA /* 3490 CMD */
#define READ_MESSAGE_ID 0x4E /* 3490 CMD */
#define READ_SUBSYS_DATA 0x3E /* 3490 CMD */
#define SET_INTERFACE_ID 0x73 /* 3490 CMD */
#define ASSIGN 0xB7 /* Assign */
#define LOCATE 0x4F /* Locate Block */
#define MODE_SET_DB 0xDB /* Mode Set */
#define READ_BLOCK_ID 0x22 /* Read Block ID */
#define UNASSIGN 0xC7 /* Unassign */
#define SENSE_COMMAND_REJECT 0x80
#define SENSE_INTERVENTION_REQUIRED 0x40