mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-21 16:29:59 +00:00
![FUJITA Tomonori](/assets/img/avatar_default.png)
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
441 lines
13 KiB
C
441 lines
13 KiB
C
/*
|
|
* This header file contains public constants and structures used by
|
|
* the scsi code for linux.
|
|
*
|
|
* For documentation on the OPCODES, MESSAGES, and SENSE values,
|
|
* please consult the SCSI standard.
|
|
*/
|
|
#ifndef _SCSI_SCSI_H
|
|
#define _SCSI_SCSI_H
|
|
|
|
#include <linux/types.h>
|
|
|
|
/*
|
|
* The maximum sg list length SCSI can cope with
|
|
* (currently must be a power of 2 between 32 and 256)
|
|
*/
|
|
#define SCSI_MAX_PHYS_SEGMENTS MAX_PHYS_SEGMENTS
|
|
|
|
|
|
/*
|
|
* SCSI command lengths
|
|
*/
|
|
|
|
extern const unsigned char scsi_command_size[8];
|
|
#define COMMAND_SIZE(opcode) scsi_command_size[((opcode) >> 5) & 7]
|
|
|
|
/*
|
|
* Special value for scanning to specify scanning or rescanning of all
|
|
* possible channels, (target) ids, or luns on a given shost.
|
|
*/
|
|
#define SCAN_WILD_CARD ~0
|
|
|
|
/*
|
|
* SCSI opcodes
|
|
*/
|
|
|
|
#define TEST_UNIT_READY 0x00
|
|
#define REZERO_UNIT 0x01
|
|
#define REQUEST_SENSE 0x03
|
|
#define FORMAT_UNIT 0x04
|
|
#define READ_BLOCK_LIMITS 0x05
|
|
#define REASSIGN_BLOCKS 0x07
|
|
#define INITIALIZE_ELEMENT_STATUS 0x07
|
|
#define READ_6 0x08
|
|
#define WRITE_6 0x0a
|
|
#define SEEK_6 0x0b
|
|
#define READ_REVERSE 0x0f
|
|
#define WRITE_FILEMARKS 0x10
|
|
#define SPACE 0x11
|
|
#define INQUIRY 0x12
|
|
#define RECOVER_BUFFERED_DATA 0x14
|
|
#define MODE_SELECT 0x15
|
|
#define RESERVE 0x16
|
|
#define RELEASE 0x17
|
|
#define COPY 0x18
|
|
#define ERASE 0x19
|
|
#define MODE_SENSE 0x1a
|
|
#define START_STOP 0x1b
|
|
#define RECEIVE_DIAGNOSTIC 0x1c
|
|
#define SEND_DIAGNOSTIC 0x1d
|
|
#define ALLOW_MEDIUM_REMOVAL 0x1e
|
|
|
|
#define SET_WINDOW 0x24
|
|
#define READ_CAPACITY 0x25
|
|
#define READ_10 0x28
|
|
#define WRITE_10 0x2a
|
|
#define SEEK_10 0x2b
|
|
#define POSITION_TO_ELEMENT 0x2b
|
|
#define WRITE_VERIFY 0x2e
|
|
#define VERIFY 0x2f
|
|
#define SEARCH_HIGH 0x30
|
|
#define SEARCH_EQUAL 0x31
|
|
#define SEARCH_LOW 0x32
|
|
#define SET_LIMITS 0x33
|
|
#define PRE_FETCH 0x34
|
|
#define READ_POSITION 0x34
|
|
#define SYNCHRONIZE_CACHE 0x35
|
|
#define LOCK_UNLOCK_CACHE 0x36
|
|
#define READ_DEFECT_DATA 0x37
|
|
#define MEDIUM_SCAN 0x38
|
|
#define COMPARE 0x39
|
|
#define COPY_VERIFY 0x3a
|
|
#define WRITE_BUFFER 0x3b
|
|
#define READ_BUFFER 0x3c
|
|
#define UPDATE_BLOCK 0x3d
|
|
#define READ_LONG 0x3e
|
|
#define WRITE_LONG 0x3f
|
|
#define CHANGE_DEFINITION 0x40
|
|
#define WRITE_SAME 0x41
|
|
#define READ_TOC 0x43
|
|
#define LOG_SELECT 0x4c
|
|
#define LOG_SENSE 0x4d
|
|
#define MODE_SELECT_10 0x55
|
|
#define RESERVE_10 0x56
|
|
#define RELEASE_10 0x57
|
|
#define MODE_SENSE_10 0x5a
|
|
#define PERSISTENT_RESERVE_IN 0x5e
|
|
#define PERSISTENT_RESERVE_OUT 0x5f
|
|
#define REPORT_LUNS 0xa0
|
|
#define MAINTENANCE_IN 0xa3
|
|
#define MOVE_MEDIUM 0xa5
|
|
#define EXCHANGE_MEDIUM 0xa6
|
|
#define READ_12 0xa8
|
|
#define WRITE_12 0xaa
|
|
#define WRITE_VERIFY_12 0xae
|
|
#define SEARCH_HIGH_12 0xb0
|
|
#define SEARCH_EQUAL_12 0xb1
|
|
#define SEARCH_LOW_12 0xb2
|
|
#define READ_ELEMENT_STATUS 0xb8
|
|
#define SEND_VOLUME_TAG 0xb6
|
|
#define WRITE_LONG_2 0xea
|
|
#define READ_16 0x88
|
|
#define WRITE_16 0x8a
|
|
#define VERIFY_16 0x8f
|
|
#define SERVICE_ACTION_IN 0x9e
|
|
/* values for service action in */
|
|
#define SAI_READ_CAPACITY_16 0x10
|
|
/* values for maintenance in */
|
|
#define MI_REPORT_TARGET_PGS 0x0a
|
|
|
|
/* Values for T10/04-262r7 */
|
|
#define ATA_16 0x85 /* 16-byte pass-thru */
|
|
#define ATA_12 0xa1 /* 12-byte pass-thru */
|
|
|
|
/*
|
|
* SCSI Architecture Model (SAM) Status codes. Taken from SAM-3 draft
|
|
* T10/1561-D Revision 4 Draft dated 7th November 2002.
|
|
*/
|
|
#define SAM_STAT_GOOD 0x00
|
|
#define SAM_STAT_CHECK_CONDITION 0x02
|
|
#define SAM_STAT_CONDITION_MET 0x04
|
|
#define SAM_STAT_BUSY 0x08
|
|
#define SAM_STAT_INTERMEDIATE 0x10
|
|
#define SAM_STAT_INTERMEDIATE_CONDITION_MET 0x14
|
|
#define SAM_STAT_RESERVATION_CONFLICT 0x18
|
|
#define SAM_STAT_COMMAND_TERMINATED 0x22 /* obsolete in SAM-3 */
|
|
#define SAM_STAT_TASK_SET_FULL 0x28
|
|
#define SAM_STAT_ACA_ACTIVE 0x30
|
|
#define SAM_STAT_TASK_ABORTED 0x40
|
|
|
|
/** scsi_status_is_good - check the status return.
|
|
*
|
|
* @status: the status passed up from the driver (including host and
|
|
* driver components)
|
|
*
|
|
* This returns true for known good conditions that may be treated as
|
|
* command completed normally
|
|
*/
|
|
static inline int scsi_status_is_good(int status)
|
|
{
|
|
/*
|
|
* FIXME: bit0 is listed as reserved in SCSI-2, but is
|
|
* significant in SCSI-3. For now, we follow the SCSI-2
|
|
* behaviour and ignore reserved bits.
|
|
*/
|
|
status &= 0xfe;
|
|
return ((status == SAM_STAT_GOOD) ||
|
|
(status == SAM_STAT_INTERMEDIATE) ||
|
|
(status == SAM_STAT_INTERMEDIATE_CONDITION_MET) ||
|
|
/* FIXME: this is obsolete in SAM-3 */
|
|
(status == SAM_STAT_COMMAND_TERMINATED));
|
|
}
|
|
|
|
/*
|
|
* Status codes. These are deprecated as they are shifted 1 bit right
|
|
* from those found in the SCSI standards. This causes confusion for
|
|
* applications that are ported to several OSes. Prefer SAM Status codes
|
|
* above.
|
|
*/
|
|
|
|
#define GOOD 0x00
|
|
#define CHECK_CONDITION 0x01
|
|
#define CONDITION_GOOD 0x02
|
|
#define BUSY 0x04
|
|
#define INTERMEDIATE_GOOD 0x08
|
|
#define INTERMEDIATE_C_GOOD 0x0a
|
|
#define RESERVATION_CONFLICT 0x0c
|
|
#define COMMAND_TERMINATED 0x11
|
|
#define QUEUE_FULL 0x14
|
|
#define ACA_ACTIVE 0x18
|
|
#define TASK_ABORTED 0x20
|
|
|
|
#define STATUS_MASK 0xfe
|
|
|
|
/*
|
|
* SENSE KEYS
|
|
*/
|
|
|
|
#define NO_SENSE 0x00
|
|
#define RECOVERED_ERROR 0x01
|
|
#define NOT_READY 0x02
|
|
#define MEDIUM_ERROR 0x03
|
|
#define HARDWARE_ERROR 0x04
|
|
#define ILLEGAL_REQUEST 0x05
|
|
#define UNIT_ATTENTION 0x06
|
|
#define DATA_PROTECT 0x07
|
|
#define BLANK_CHECK 0x08
|
|
#define COPY_ABORTED 0x0a
|
|
#define ABORTED_COMMAND 0x0b
|
|
#define VOLUME_OVERFLOW 0x0d
|
|
#define MISCOMPARE 0x0e
|
|
|
|
|
|
/*
|
|
* DEVICE TYPES
|
|
*/
|
|
|
|
#define TYPE_DISK 0x00
|
|
#define TYPE_TAPE 0x01
|
|
#define TYPE_PRINTER 0x02
|
|
#define TYPE_PROCESSOR 0x03 /* HP scanners use this */
|
|
#define TYPE_WORM 0x04 /* Treated as ROM by our system */
|
|
#define TYPE_ROM 0x05
|
|
#define TYPE_SCANNER 0x06
|
|
#define TYPE_MOD 0x07 /* Magneto-optical disk -
|
|
* - treated as TYPE_DISK */
|
|
#define TYPE_MEDIUM_CHANGER 0x08
|
|
#define TYPE_COMM 0x09 /* Communications device */
|
|
#define TYPE_RAID 0x0c
|
|
#define TYPE_ENCLOSURE 0x0d /* Enclosure Services Device */
|
|
#define TYPE_RBC 0x0e
|
|
#define TYPE_NO_LUN 0x7f
|
|
|
|
/* Returns a human-readable name for the device */
|
|
extern const char * scsi_device_type(unsigned type);
|
|
|
|
/*
|
|
* standard mode-select header prepended to all mode-select commands
|
|
*/
|
|
|
|
struct ccs_modesel_head {
|
|
__u8 _r1; /* reserved */
|
|
__u8 medium; /* device-specific medium type */
|
|
__u8 _r2; /* reserved */
|
|
__u8 block_desc_length; /* block descriptor length */
|
|
__u8 density; /* device-specific density code */
|
|
__u8 number_blocks_hi; /* number of blocks in this block desc */
|
|
__u8 number_blocks_med;
|
|
__u8 number_blocks_lo;
|
|
__u8 _r3;
|
|
__u8 block_length_hi; /* block length for blocks in this desc */
|
|
__u8 block_length_med;
|
|
__u8 block_length_lo;
|
|
};
|
|
|
|
/*
|
|
* ScsiLun: 8 byte LUN.
|
|
*/
|
|
struct scsi_lun {
|
|
__u8 scsi_lun[8];
|
|
};
|
|
|
|
/*
|
|
* MESSAGE CODES
|
|
*/
|
|
|
|
#define COMMAND_COMPLETE 0x00
|
|
#define EXTENDED_MESSAGE 0x01
|
|
#define EXTENDED_MODIFY_DATA_POINTER 0x00
|
|
#define EXTENDED_SDTR 0x01
|
|
#define EXTENDED_EXTENDED_IDENTIFY 0x02 /* SCSI-I only */
|
|
#define EXTENDED_WDTR 0x03
|
|
#define EXTENDED_PPR 0x04
|
|
#define EXTENDED_MODIFY_BIDI_DATA_PTR 0x05
|
|
#define SAVE_POINTERS 0x02
|
|
#define RESTORE_POINTERS 0x03
|
|
#define DISCONNECT 0x04
|
|
#define INITIATOR_ERROR 0x05
|
|
#define ABORT_TASK_SET 0x06
|
|
#define MESSAGE_REJECT 0x07
|
|
#define NOP 0x08
|
|
#define MSG_PARITY_ERROR 0x09
|
|
#define LINKED_CMD_COMPLETE 0x0a
|
|
#define LINKED_FLG_CMD_COMPLETE 0x0b
|
|
#define TARGET_RESET 0x0c
|
|
#define ABORT_TASK 0x0d
|
|
#define CLEAR_TASK_SET 0x0e
|
|
#define INITIATE_RECOVERY 0x0f /* SCSI-II only */
|
|
#define RELEASE_RECOVERY 0x10 /* SCSI-II only */
|
|
#define CLEAR_ACA 0x16
|
|
#define LOGICAL_UNIT_RESET 0x17
|
|
#define SIMPLE_QUEUE_TAG 0x20
|
|
#define HEAD_OF_QUEUE_TAG 0x21
|
|
#define ORDERED_QUEUE_TAG 0x22
|
|
#define IGNORE_WIDE_RESIDUE 0x23
|
|
#define ACA 0x24
|
|
#define QAS_REQUEST 0x55
|
|
|
|
/* Old SCSI2 names, don't use in new code */
|
|
#define BUS_DEVICE_RESET TARGET_RESET
|
|
#define ABORT ABORT_TASK_SET
|
|
|
|
/*
|
|
* Host byte codes
|
|
*/
|
|
|
|
#define DID_OK 0x00 /* NO error */
|
|
#define DID_NO_CONNECT 0x01 /* Couldn't connect before timeout period */
|
|
#define DID_BUS_BUSY 0x02 /* BUS stayed busy through time out period */
|
|
#define DID_TIME_OUT 0x03 /* TIMED OUT for other reason */
|
|
#define DID_BAD_TARGET 0x04 /* BAD target. */
|
|
#define DID_ABORT 0x05 /* Told to abort for some other reason */
|
|
#define DID_PARITY 0x06 /* Parity error */
|
|
#define DID_ERROR 0x07 /* Internal error */
|
|
#define DID_RESET 0x08 /* Reset by somebody. */
|
|
#define DID_BAD_INTR 0x09 /* Got an interrupt we weren't expecting. */
|
|
#define DID_PASSTHROUGH 0x0a /* Force command past mid-layer */
|
|
#define DID_SOFT_ERROR 0x0b /* The low level driver just wish a retry */
|
|
#define DID_IMM_RETRY 0x0c /* Retry without decrementing retry count */
|
|
#define DID_REQUEUE 0x0d /* Requeue command (no immediate retry) also
|
|
* without decrementing the retry count */
|
|
#define DRIVER_OK 0x00 /* Driver status */
|
|
|
|
/*
|
|
* These indicate the error that occurred, and what is available.
|
|
*/
|
|
|
|
#define DRIVER_BUSY 0x01
|
|
#define DRIVER_SOFT 0x02
|
|
#define DRIVER_MEDIA 0x03
|
|
#define DRIVER_ERROR 0x04
|
|
|
|
#define DRIVER_INVALID 0x05
|
|
#define DRIVER_TIMEOUT 0x06
|
|
#define DRIVER_HARD 0x07
|
|
#define DRIVER_SENSE 0x08
|
|
|
|
#define SUGGEST_RETRY 0x10
|
|
#define SUGGEST_ABORT 0x20
|
|
#define SUGGEST_REMAP 0x30
|
|
#define SUGGEST_DIE 0x40
|
|
#define SUGGEST_SENSE 0x80
|
|
#define SUGGEST_IS_OK 0xff
|
|
|
|
#define DRIVER_MASK 0x0f
|
|
#define SUGGEST_MASK 0xf0
|
|
|
|
/*
|
|
* Internal return values.
|
|
*/
|
|
|
|
#define NEEDS_RETRY 0x2001
|
|
#define SUCCESS 0x2002
|
|
#define FAILED 0x2003
|
|
#define QUEUED 0x2004
|
|
#define SOFT_ERROR 0x2005
|
|
#define ADD_TO_MLQUEUE 0x2006
|
|
#define TIMEOUT_ERROR 0x2007
|
|
|
|
/*
|
|
* Midlevel queue return values.
|
|
*/
|
|
#define SCSI_MLQUEUE_HOST_BUSY 0x1055
|
|
#define SCSI_MLQUEUE_DEVICE_BUSY 0x1056
|
|
#define SCSI_MLQUEUE_EH_RETRY 0x1057
|
|
|
|
/*
|
|
* Use these to separate status msg and our bytes
|
|
*
|
|
* These are set by:
|
|
*
|
|
* status byte = set from target device
|
|
* msg_byte = return status from host adapter itself.
|
|
* host_byte = set by low-level driver to indicate status.
|
|
* driver_byte = set by mid-level.
|
|
*/
|
|
#define status_byte(result) (((result) >> 1) & 0x7f)
|
|
#define msg_byte(result) (((result) >> 8) & 0xff)
|
|
#define host_byte(result) (((result) >> 16) & 0xff)
|
|
#define driver_byte(result) (((result) >> 24) & 0xff)
|
|
#define suggestion(result) (driver_byte(result) & SUGGEST_MASK)
|
|
|
|
#define sense_class(sense) (((sense) >> 4) & 0x7)
|
|
#define sense_error(sense) ((sense) & 0xf)
|
|
#define sense_valid(sense) ((sense) & 0x80);
|
|
|
|
/*
|
|
* default timeouts
|
|
*/
|
|
#define FORMAT_UNIT_TIMEOUT (2 * 60 * 60 * HZ)
|
|
#define START_STOP_TIMEOUT (60 * HZ)
|
|
#define MOVE_MEDIUM_TIMEOUT (5 * 60 * HZ)
|
|
#define READ_ELEMENT_STATUS_TIMEOUT (5 * 60 * HZ)
|
|
#define READ_DEFECT_DATA_TIMEOUT (60 * HZ )
|
|
|
|
|
|
#define IDENTIFY_BASE 0x80
|
|
#define IDENTIFY(can_disconnect, lun) (IDENTIFY_BASE |\
|
|
((can_disconnect) ? 0x40 : 0) |\
|
|
((lun) & 0x07))
|
|
|
|
/*
|
|
* struct scsi_device::scsi_level values. For SCSI devices other than those
|
|
* prior to SCSI-2 (i.e. over 12 years old) this value is (resp[2] + 1)
|
|
* where "resp" is a byte array of the response to an INQUIRY. The scsi_level
|
|
* variable is visible to the user via sysfs.
|
|
*/
|
|
|
|
#define SCSI_UNKNOWN 0
|
|
#define SCSI_1 1
|
|
#define SCSI_1_CCS 2
|
|
#define SCSI_2 3
|
|
#define SCSI_3 4 /* SPC */
|
|
#define SCSI_SPC_2 5
|
|
#define SCSI_SPC_3 6
|
|
|
|
/*
|
|
* INQ PERIPHERAL QUALIFIERS
|
|
*/
|
|
#define SCSI_INQ_PQ_CON 0x00
|
|
#define SCSI_INQ_PQ_NOT_CON 0x01
|
|
#define SCSI_INQ_PQ_NOT_CAP 0x03
|
|
|
|
|
|
/*
|
|
* Here are some scsi specific ioctl commands which are sometimes useful.
|
|
*
|
|
* Note that include/linux/cdrom.h also defines IOCTL 0x5300 - 0x5395
|
|
*/
|
|
|
|
/* Used to obtain PUN and LUN info. Conflicts with CDROMAUDIOBUFSIZ */
|
|
#define SCSI_IOCTL_GET_IDLUN 0x5382
|
|
|
|
/* 0x5383 and 0x5384 were used for SCSI_IOCTL_TAGGED_{ENABLE,DISABLE} */
|
|
|
|
/* Used to obtain the host number of a device. */
|
|
#define SCSI_IOCTL_PROBE_HOST 0x5385
|
|
|
|
/* Used to obtain the bus number for a device */
|
|
#define SCSI_IOCTL_GET_BUS_NUMBER 0x5386
|
|
|
|
/* Used to obtain the PCI location of a device */
|
|
#define SCSI_IOCTL_GET_PCI 0x5387
|
|
|
|
/* Pull a u32 out of a SCSI message (using BE SCSI conventions) */
|
|
static inline __u32 scsi_to_u32(__u8 *ptr)
|
|
{
|
|
return (ptr[0]<<24) + (ptr[1]<<16) + (ptr[2]<<8) + ptr[3];
|
|
}
|
|
|
|
#endif /* _SCSI_SCSI_H */
|