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linux/include/scsi/scsi_proto.h
Bart Van Assche 4977c0f452 scsi: scsi_proto: Add structures and constants related to I/O groups and streams 
Prepare for adding code that will query the I/O advice hints group
descriptors and for adding code that will retrieve the stream status.

Cc: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Link: https://lore.kernel.org/r/20240130214911.1863909-11-bvanassche@acm.org
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2024-02-26 21:37:26 -05:00

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/* SPDX-License-Identifier: GPL-2.0 */
/*
* This header file contains public constants and structures used by
* both the SCSI initiator and the SCSI target code.
*
* For documentation on the OPCODES, MESSAGES, and SENSE values,
* please consult the SCSI standard.
*/
#ifndef _SCSI_PROTO_H_
#define _SCSI_PROTO_H_
#include <linux/build_bug.h>
#include <linux/types.h>
/*
* 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 READ_FORMAT_CAPACITIES 0x23
#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 UNMAP 0x42
#define READ_TOC 0x43
#define READ_HEADER 0x44
#define GET_EVENT_STATUS_NOTIFICATION 0x4a
#define LOG_SELECT 0x4c
#define LOG_SENSE 0x4d
#define XDWRITEREAD_10 0x53
#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 VARIABLE_LENGTH_CMD 0x7f
#define REPORT_LUNS 0xa0
#define SECURITY_PROTOCOL_IN 0xa2
#define MAINTENANCE_IN 0xa3
#define MAINTENANCE_OUT 0xa4
#define MOVE_MEDIUM 0xa5
#define EXCHANGE_MEDIUM 0xa6
#define READ_12 0xa8
#define SERVICE_ACTION_OUT_12 0xa9
#define WRITE_12 0xaa
#define READ_MEDIA_SERIAL_NUMBER 0xab /* Obsolete with SPC-2 */
#define SERVICE_ACTION_IN_12 0xab
#define WRITE_VERIFY_12 0xae
#define VERIFY_12 0xaf
#define SEARCH_HIGH_12 0xb0
#define SEARCH_EQUAL_12 0xb1
#define SEARCH_LOW_12 0xb2
#define SECURITY_PROTOCOL_OUT 0xb5
#define READ_ELEMENT_STATUS 0xb8
#define SEND_VOLUME_TAG 0xb6
#define WRITE_LONG_2 0xea
#define EXTENDED_COPY 0x83
#define RECEIVE_COPY_RESULTS 0x84
#define ACCESS_CONTROL_IN 0x86
#define ACCESS_CONTROL_OUT 0x87
#define READ_16 0x88
#define COMPARE_AND_WRITE 0x89
#define WRITE_16 0x8a
#define READ_ATTRIBUTE 0x8c
#define WRITE_ATTRIBUTE 0x8d
#define WRITE_VERIFY_16 0x8e
#define VERIFY_16 0x8f
#define SYNCHRONIZE_CACHE_16 0x91
#define WRITE_SAME_16 0x93
#define ZBC_OUT 0x94
#define ZBC_IN 0x95
#define SERVICE_ACTION_BIDIRECTIONAL 0x9d
#define SERVICE_ACTION_IN_16 0x9e
#define SERVICE_ACTION_OUT_16 0x9f
/* values for service action in */
#define SAI_READ_CAPACITY_16 0x10
#define SAI_GET_LBA_STATUS 0x12
#define SAI_REPORT_REFERRALS 0x13
#define SAI_GET_STREAM_STATUS 0x16
/* values for maintenance in */
#define MI_REPORT_IDENTIFYING_INFORMATION 0x05
#define MI_REPORT_TARGET_PGS 0x0a
#define MI_REPORT_ALIASES 0x0b
#define MI_REPORT_SUPPORTED_OPERATION_CODES 0x0c
#define MI_REPORT_SUPPORTED_TASK_MANAGEMENT_FUNCTIONS 0x0d
#define MI_REPORT_PRIORITY 0x0e
#define MI_REPORT_TIMESTAMP 0x0f
#define MI_MANAGEMENT_PROTOCOL_IN 0x10
/* value for MI_REPORT_TARGET_PGS ext header */
#define MI_EXT_HDR_PARAM_FMT 0x20
/* values for maintenance out */
#define MO_SET_IDENTIFYING_INFORMATION 0x06
#define MO_SET_TARGET_PGS 0x0a
#define MO_CHANGE_ALIASES 0x0b
#define MO_SET_PRIORITY 0x0e
#define MO_SET_TIMESTAMP 0x0f
#define MO_MANAGEMENT_PROTOCOL_OUT 0x10
/* values for ZBC_IN */
#define ZI_REPORT_ZONES 0x00
/* values for ZBC_OUT */
#define ZO_CLOSE_ZONE 0x01
#define ZO_FINISH_ZONE 0x02
#define ZO_OPEN_ZONE 0x03
#define ZO_RESET_WRITE_POINTER 0x04
/* values for PR in service action */
#define READ_KEYS 0x00
#define READ_RESERVATION 0x01
#define REPORT_CAPABILITES 0x02
#define READ_FULL_STATUS 0x03
/* values for variable length command */
#define XDREAD_32 0x03
#define XDWRITE_32 0x04
#define XPWRITE_32 0x06
#define XDWRITEREAD_32 0x07
#define READ_32 0x09
#define VERIFY_32 0x0a
#define WRITE_32 0x0b
#define WRITE_VERIFY_32 0x0c
#define WRITE_SAME_32 0x0d
#define ATA_32 0x1ff0
/* Values for T10/04-262r7 */
#define ATA_16 0x85 /* 16-byte pass-thru */
#define ATA_12 0xa1 /* 12-byte pass-thru */
/* Vendor specific CDBs start here */
#define VENDOR_SPECIFIC_CDB 0xc0
/*
* SCSI command lengths
*/
#define SCSI_MAX_VARLEN_CDB_SIZE 260
/* defined in T10 SCSI Primary Commands-2 (SPC2) */
struct scsi_varlen_cdb_hdr {
__u8 opcode; /* opcode always == VARIABLE_LENGTH_CMD */
__u8 control;
__u8 misc[5];
__u8 additional_cdb_length; /* total cdb length - 8 */
__be16 service_action;
/* service specific data follows */
};
/*
* SCSI Architecture Model (SAM) Status codes. Taken from SAM-3 draft
* T10/1561-D Revision 4 Draft dated 7th November 2002.
*/
enum sam_status {
SAM_STAT_GOOD = 0x00,
SAM_STAT_CHECK_CONDITION = 0x02,
SAM_STAT_CONDITION_MET = 0x04,
SAM_STAT_BUSY = 0x08,
SAM_STAT_INTERMEDIATE = 0x10,
SAM_STAT_INTERMEDIATE_CONDITION_MET = 0x14,
SAM_STAT_RESERVATION_CONFLICT = 0x18,
SAM_STAT_COMMAND_TERMINATED = 0x22, /* obsolete in SAM-3 */
SAM_STAT_TASK_SET_FULL = 0x28,
SAM_STAT_ACA_ACTIVE = 0x30,
SAM_STAT_TASK_ABORTED = 0x40,
};
#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 VENDOR_SPECIFIC 0x09
#define COPY_ABORTED 0x0a
#define ABORTED_COMMAND 0x0b
#define VOLUME_OVERFLOW 0x0d
#define MISCOMPARE 0x0e
#define COMPLETED 0x0f
/*
* DEVICE TYPES
* Please keep them in 0x%02x format for $MODALIAS to work
*/
#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_OSD 0x11
#define TYPE_ZBC 0x14
#define TYPE_WLUN 0x1e /* well-known logical unit */
#define TYPE_NO_LUN 0x7f
/* SCSI protocols; these are taken from SPC-3 section 7.5 */
enum scsi_protocol {
SCSI_PROTOCOL_FCP = 0, /* Fibre Channel */
SCSI_PROTOCOL_SPI = 1, /* parallel SCSI */
SCSI_PROTOCOL_SSA = 2, /* Serial Storage Architecture - Obsolete */
SCSI_PROTOCOL_SBP = 3, /* firewire */
SCSI_PROTOCOL_SRP = 4, /* Infiniband RDMA */
SCSI_PROTOCOL_ISCSI = 5,
SCSI_PROTOCOL_SAS = 6,
SCSI_PROTOCOL_ADT = 7, /* Media Changers */
SCSI_PROTOCOL_ATA = 8,
SCSI_PROTOCOL_UNSPEC = 0xf, /* No specific protocol */
};
/*
* ScsiLun: 8 byte LUN.
*/
struct scsi_lun {
__u8 scsi_lun[8];
};
/* SBC-5 IO advice hints group descriptor */
struct scsi_io_group_descriptor {
#if defined(__BIG_ENDIAN)
u8 io_advice_hints_mode: 2;
u8 reserved1: 3;
u8 st_enble: 1;
u8 cs_enble: 1;
u8 ic_enable: 1;
#elif defined(__LITTLE_ENDIAN)
u8 ic_enable: 1;
u8 cs_enble: 1;
u8 st_enble: 1;
u8 reserved1: 3;
u8 io_advice_hints_mode: 2;
#else
#error
#endif
u8 reserved2[3];
/* Logical block markup descriptor */
#if defined(__BIG_ENDIAN)
u8 acdlu: 1;
u8 reserved3: 1;
u8 rlbsr: 2;
u8 lbm_descriptor_type: 4;
#elif defined(__LITTLE_ENDIAN)
u8 lbm_descriptor_type: 4;
u8 rlbsr: 2;
u8 reserved3: 1;
u8 acdlu: 1;
#else
#error
#endif
u8 params[2];
u8 reserved4;
u8 reserved5[8];
};
static_assert(sizeof(struct scsi_io_group_descriptor) == 16);
/* SCSI stream status descriptor */
struct scsi_stream_status {
#if defined(__BIG_ENDIAN)
u8 perm: 1;
u8 reserved1: 7;
#elif defined(__LITTLE_ENDIAN)
u8 reserved1: 7;
u8 perm: 1;
#else
#error
#endif
u8 reserved2;
__be16 stream_identifier;
#if defined(__BIG_ENDIAN)
u8 reserved3: 2;
u8 rel_lifetime: 6;
#elif defined(__LITTLE_ENDIAN)
u8 rel_lifetime: 6;
u8 reserved3: 2;
#else
#error
#endif
u8 reserved4[3];
};
static_assert(sizeof(struct scsi_stream_status) == 8);
/* GET STREAM STATUS parameter data */
struct scsi_stream_status_header {
__be32 len; /* length in bytes of stream_status[] array. */
u16 reserved;
__be16 number_of_open_streams;
DECLARE_FLEX_ARRAY(struct scsi_stream_status, stream_status);
};
static_assert(sizeof(struct scsi_stream_status_header) == 8);
/* SPC asymmetric access states */
#define SCSI_ACCESS_STATE_OPTIMAL 0x00
#define SCSI_ACCESS_STATE_ACTIVE 0x01
#define SCSI_ACCESS_STATE_STANDBY 0x02
#define SCSI_ACCESS_STATE_UNAVAILABLE 0x03
#define SCSI_ACCESS_STATE_LBA 0x04
#define SCSI_ACCESS_STATE_OFFLINE 0x0e
#define SCSI_ACCESS_STATE_TRANSITIONING 0x0f
/* Values for REPORT TARGET GROUP STATES */
#define SCSI_ACCESS_STATE_MASK 0x0f
#define SCSI_ACCESS_STATE_PREFERRED 0x80
/* Reporting options for REPORT ZONES */
enum zbc_zone_reporting_options {
ZBC_ZONE_REPORTING_OPTION_ALL = 0x00,
ZBC_ZONE_REPORTING_OPTION_EMPTY = 0x01,
ZBC_ZONE_REPORTING_OPTION_IMPLICIT_OPEN = 0x02,
ZBC_ZONE_REPORTING_OPTION_EXPLICIT_OPEN = 0x03,
ZBC_ZONE_REPORTING_OPTION_CLOSED = 0x04,
ZBC_ZONE_REPORTING_OPTION_FULL = 0x05,
ZBC_ZONE_REPORTING_OPTION_READONLY = 0x06,
ZBC_ZONE_REPORTING_OPTION_OFFLINE = 0x07,
/* 0x08 to 0x0f are reserved */
ZBC_ZONE_REPORTING_OPTION_NEED_RESET_WP = 0x10,
ZBC_ZONE_REPORTING_OPTION_NON_SEQWRITE = 0x11,
/* 0x12 to 0x3e are reserved */
ZBC_ZONE_REPORTING_OPTION_NON_WP = 0x3f,
};
#define ZBC_REPORT_ZONE_PARTIAL 0x80
/* Zone types of REPORT ZONES zone descriptors */
enum zbc_zone_type {
ZBC_ZONE_TYPE_CONV = 0x1,
ZBC_ZONE_TYPE_SEQWRITE_REQ = 0x2,
ZBC_ZONE_TYPE_SEQWRITE_PREF = 0x3,
ZBC_ZONE_TYPE_SEQ_OR_BEFORE_REQ = 0x4,
ZBC_ZONE_TYPE_GAP = 0x5,
/* 0x6 to 0xf are reserved */
};
/* Zone conditions of REPORT ZONES zone descriptors */
enum zbc_zone_cond {
ZBC_ZONE_COND_NO_WP = 0x0,
ZBC_ZONE_COND_EMPTY = 0x1,
ZBC_ZONE_COND_IMP_OPEN = 0x2,
ZBC_ZONE_COND_EXP_OPEN = 0x3,
ZBC_ZONE_COND_CLOSED = 0x4,
/* 0x5 to 0xc are reserved */
ZBC_ZONE_COND_READONLY = 0xd,
ZBC_ZONE_COND_FULL = 0xe,
ZBC_ZONE_COND_OFFLINE = 0xf,
};
enum zbc_zone_alignment_method {
ZBC_CONSTANT_ZONE_LENGTH = 0x1,
ZBC_CONSTANT_ZONE_START_OFFSET = 0x8,
};
/* Version descriptor values for INQUIRY */
enum scsi_version_descriptor {
SCSI_VERSION_DESCRIPTOR_FCP4 = 0x0a40,
SCSI_VERSION_DESCRIPTOR_ISCSI = 0x0960,
SCSI_VERSION_DESCRIPTOR_SAM5 = 0x00a0,
SCSI_VERSION_DESCRIPTOR_SAS3 = 0x0c60,
SCSI_VERSION_DESCRIPTOR_SBC3 = 0x04c0,
SCSI_VERSION_DESCRIPTOR_SBP3 = 0x0980,
SCSI_VERSION_DESCRIPTOR_SPC4 = 0x0460,
SCSI_VERSION_DESCRIPTOR_SRP = 0x0940
};
enum scsi_support_opcode {
SCSI_SUPPORT_NO_INFO = 0,
SCSI_SUPPORT_NOT_SUPPORTED = 1,
SCSI_SUPPORT_FULL = 3,
SCSI_SUPPORT_VENDOR = 5,
};
#define SCSI_CONTROL_MASK 0
#define SCSI_GROUP_NUMBER_MASK 0
#endif /* _SCSI_PROTO_H_ */
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