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scst/scst/include/scst_const.h
Vladislav Bolkhovitin d0c448116a Change version to 3.4 
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@7230 d57e44dd-8a1f-0410-8b47-8ef2f437770f
2017-09-01 04:04:00 +00:00

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/*
* include/scst_const.h
*
* Copyright (C) 2004 - 2017 Vladislav Bolkhovitin <vst@vlnb.net>
* Copyright (C) 2007 - 2017 SanDisk Corporation
*
* Contains common SCST constants. This file supposed to be included
* from both kernel and user spaces.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, version 2
* of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef __SCST_CONST_H
#define __SCST_CONST_H
#ifndef GENERATING_UPSTREAM_PATCH
/*
* Include <linux/version.h> only when not converting this header file into
* a patch for upstream review because only then the symbol LINUX_VERSION_CODE
* is needed.
*/
#include <linux/version.h>
#endif
#include <scsi/scsi.h>
#ifndef __KERNEL__
#include <errno.h>
#endif
#include "scst_itf_ver.h"
/*
* Version numbers, the same as for the kernel.
*
* Changing it don't forget to change SCST_FIO_REV in scst_vdisk.c
* and FIO_REV in usr/fileio/common.h as well.
*/
#define SCST_VERSION(a, b, c, d) (((a) << 24) + ((b) << 16) + ((c) << 8) + d)
#define SCST_VERSION_CODE SCST_VERSION(3, 4, 0, 0)
#ifdef CONFIG_SCST_PROC
#define SCST_VERSION_STRING_SUFFIX "-procfs"
#else
#define SCST_VERSION_STRING_SUFFIX
#endif
#define SCST_VERSION_NAME "3.4.0-pre1"
#define SCST_VERSION_STRING SCST_VERSION_NAME SCST_VERSION_STRING_SUFFIX
#define SCST_CONST_VERSION SCST_CONST_INTF_VER
/*** Shared constants between user and kernel spaces ***/
/* Max size of CDB */
#define SCST_MAX_CDB_SIZE 16
/* Max size of long CDB */
#define SCST_MAX_LONG_CDB_SIZE 65536
/* Max size of various names */
#define SCST_MAX_NAME 50
/* Max size of external names, like initiator name */
#define SCST_MAX_EXTERNAL_NAME 256
/* Max LUN. 2 bits are used for addressing method. */
#define SCST_MAX_LUN ((1 << (16-2)) - 1)
/*
* Size of sense sufficient to carry standard sense data.
* Warning! It's allocated on stack!
*/
#define SCST_STANDARD_SENSE_LEN 18
/* Max size of sense */
#define SCST_SENSE_BUFFERSIZE 252
/*************************************************************
** Allowed delivery statuses for cmd's delivery_status
*************************************************************/
#define SCST_CMD_DELIVERY_SUCCESS 0
#define SCST_CMD_DELIVERY_FAILED -1
#define SCST_CMD_DELIVERY_ABORTED -2
/*************************************************************
** Values for task management functions
*************************************************************/
#define SCST_ABORT_TASK 0
#define SCST_ABORT_TASK_SET 1
#define SCST_CLEAR_ACA 2
#define SCST_CLEAR_TASK_SET 3
#define SCST_LUN_RESET 4
#define SCST_TARGET_RESET 5
/**
** SCST extensions
**
** !! Adding new extensions don't forget to update
** !! scst_tm_fn_name as well!
**/
/*
* Notifies about I_T nexus loss event in the corresponding session.
* Aborts all tasks there and sets up the I_T Nexus loss UA.
*/
#define SCST_NEXUS_LOSS_SESS 6
/* Aborts all tasks in the corresponding session */
#define SCST_ABORT_ALL_TASKS_SESS 7
/*
* Notifies about I_T nexus loss event. Aborts all tasks in all sessions
* of the tgt, and sets up in them the I_T Nexus loss UA.
*/
#define SCST_NEXUS_LOSS 8
/* Aborts all tasks in all sessions of the tgt */
#define SCST_ABORT_ALL_TASKS 9
/*
* Internal TM command issued by SCST in scst_unregister_session(). It is the
* same as SCST_NEXUS_LOSS_SESS, except:
* - it doesn't call task_mgmt_affected_cmds_done()
* - it doesn't call task_mgmt_fn_done()
* - it doesn't queue NEXUS LOSS UA.
*
* Target drivers must NEVER use it!!
*/
#define SCST_UNREG_SESS_TM 10
/*
* Internal TM command issued by SCST in scst_pr_abort_reg(). It aborts all
* tasks from mcmd->origin_pr_cmd->tgt_dev, except mcmd->origin_pr_cmd.
* Additionally:
* - it signals pr_aborting_cmpl completion when all affected
* commands marked as aborted.
* - it doesn't call task_mgmt_affected_cmds_done()
* - it doesn't call task_mgmt_fn_done()
* - it calls mcmd->origin_pr_cmd->scst_cmd_done() when all affected
* commands aborted.
*
* Target drivers must NEVER use it!!
*/
#define SCST_PR_ABORT_ALL 11
/*************************************************************
** Values for mgmt cmd's status field. Codes taken from iSCSI
*************************************************************/
#define SCST_MGMT_STATUS_SUCCESS 0
#define SCST_MGMT_STATUS_TASK_NOT_EXIST -1
#define SCST_MGMT_STATUS_LUN_NOT_EXIST -2
#define SCST_MGMT_STATUS_FN_NOT_SUPPORTED -5
#define SCST_MGMT_STATUS_REJECTED -255
#define SCST_MGMT_STATUS_FAILED -129
/* Extra status meaning that the received stage completed, not done */
#define SCST_MGMT_STATUS_RECEIVED_STAGE_COMPLETED 200
/*************************************************************
** SCSI LUN addressing methods. See also SAM-2 and the
** section about eight byte LUNs.
*************************************************************/
enum scst_lun_addr_method {
SCST_LUN_ADDR_METHOD_PERIPHERAL = 0,
SCST_LUN_ADDR_METHOD_FLAT = 1,
SCST_LUN_ADDR_METHOD_LUN = 2,
SCST_LUN_ADDR_METHOD_EXTENDED_LUN = 3,
};
/*************************************************************
** SCSI task attribute queue types
*************************************************************/
enum scst_cmd_queue_type {
SCST_CMD_QUEUE_UNTAGGED = 0,
SCST_CMD_QUEUE_SIMPLE,
SCST_CMD_QUEUE_ORDERED,
SCST_CMD_QUEUE_HEAD_OF_QUEUE,
SCST_CMD_QUEUE_ACA
};
/***************************************************************
** CDB flags. All must be single bit fit in int32. Bit fields
** approach (unsigned int x:1) was not used, because those
** flags supposed to be passed to the user space where another
** compiler with another bitfields layout can be used.
***************************************************************/
enum scst_cdb_flags {
/*
* !! Both timeouts must be the lowest bits to match
* !! scst_generic_parse() expectations!
*/
SCST_SMALL_TIMEOUT = 0x0001,
SCST_LONG_TIMEOUT = 0x0002,
#define SCST_BOTH_TIMEOUTS (SCST_SMALL_TIMEOUT | SCST_LONG_TIMEOUT)
SCST_TRANSFER_LEN_TYPE_FIXED = 0x0004,
SCST_UNKNOWN_LBA = 0x0008,
SCST_UNKNOWN_LENGTH = 0x0010,
SCST_INFO_VALID = 0x0020,
/*
* Set if LBA not defined for this CDB. The "NOT" approach
* was used to make sure that all dev handlers either init
* cmd->lba or set this flag (for backward compatibility)
*/
SCST_LBA_NOT_VALID = 0x0040,
SCST_IMPLICIT_HQ = 0x0080,
SCST_SKIP_UA = 0x0100,
SCST_WRITE_MEDIUM = 0x0200,
SCST_LOCAL_CMD = 0x0400,
/*
* Set if CDB is fully locally handled by SCST. Dev handlers
* parse() and dev_done() not called for such commands
*/
SCST_FULLY_LOCAL_CMD = 0x0800,
SCST_REG_RESERVE_ALLOWED = 0x1000,
SCST_WRITE_EXCL_ALLOWED = 0x2000,
SCST_EXCL_ACCESS_ALLOWED = 0x4000,
#ifdef CONFIG_SCST_TEST_IO_IN_SIRQ
SCST_TEST_IO_IN_SIRQ_ALLOWED = 0x8000,
#endif
SCST_SERIALIZED = 0x10000,
SCST_STRICTLY_SERIALIZED = 0x20000|SCST_SERIALIZED,
SCST_CAN_GEN_3PARTY_COMMANDS = 0x40000,
SCST_DESCRIPTORS_BASED = 0x80000,
SCST_SCSI_ATOMIC = 0x100000,
};
/*************************************************************
** Data direction aliases. Changing it don't forget to change
** scst_to_tgt_dma_dir and SCST_DATA_DIR_MAX as well!!
*************************************************************/
#define SCST_DATA_UNKNOWN 0
#define SCST_DATA_WRITE 1
#define SCST_DATA_READ 2
#define SCST_DATA_BIDI (SCST_DATA_WRITE | SCST_DATA_READ)
#define SCST_DATA_NONE 4
#define SCST_DATA_DIR_MAX (SCST_DATA_NONE+1)
#ifdef CONFIG_SCST_PROC
/*************************************************************
** Name of the "Default" security group
*************************************************************/
#define SCST_DEFAULT_ACG_NAME "Default"
#endif
/*************************************************************
** Default suffix for targets with NULL names
*************************************************************/
#define SCST_DEFAULT_TGT_NAME_SUFFIX "_target_"
/*************************************************************
** Sense manipulation and examination
*************************************************************/
#define SCST_LOAD_SENSE(key_asc_ascq) key_asc_ascq
static inline int scst_sense_valid(const uint8_t *sense)
{
return (sense != NULL) && ((sense[0] & 0x70) == 0x70);
}
static inline int scst_no_sense(const uint8_t *sense)
{
return (sense != NULL) && (sense[2] == 0);
}
static inline int scst_sense_response_code(const uint8_t *sense)
{
return sense[0] & 0x7F;
}
/*************************************************************
** Sense data for the appropriate errors. Can be used with
** scst_set_cmd_error(). Column order: key, ASC, ASCQ. See
** also http://www.t10.org/lists/asc-num.htm.
*************************************************************/
/* NO_SENSE is 0 */
#define scst_sense_no_sense NO_SENSE, 0x00, 0
/* NOT_READY is 2 */
#define scst_sense_format_in_progress NOT_READY, 0x04, 0x04
#define scst_sense_alua_transitioning NOT_READY, 0x04, 0x0A
#define scst_sense_alua_standby NOT_READY, 0x04, 0x0B
#define scst_sense_alua_unav NOT_READY, 0x04, 0x0C
#define scst_sense_no_medium NOT_READY, 0x3a, 0
/* MEDIUM_ERROR is 3 */
#define scst_sense_write_error MEDIUM_ERROR, 0x03, 0
#define scst_sense_read_error MEDIUM_ERROR, 0x11, 0
/* HARDWARE_ERROR is 4 */
#define scst_sense_hardw_error HARDWARE_ERROR, 0x44, 0 /* non-retriable */
#define scst_sense_set_target_pgs_failed HARDWARE_ERROR, 0x67, 0xA
/* ILLEGAL_REQUEST is 5 */
#define scst_sense_operation_in_progress ILLEGAL_REQUEST, 0x0, 0x16
#define scst_sense_parameter_list_length_invalid ILLEGAL_REQUEST, 0x1A, 0
#define scst_sense_invalid_opcode ILLEGAL_REQUEST, 0x20, 0
#define scst_sense_block_out_range_error ILLEGAL_REQUEST, 0x21, 0
/* Don't use it directly, use scst_set_invalid_field_in_cdb() instead! */
#define scst_sense_invalid_field_in_cdb ILLEGAL_REQUEST, 0x24, 0
#define scst_sense_lun_not_supported ILLEGAL_REQUEST, 0x25, 0
/* Don't use it directly, use scst_set_invalid_field_in_parm_list() instead! */
#define scst_sense_invalid_field_in_parm_list ILLEGAL_REQUEST, 0x26, 0
#define scst_sense_parameter_value_invalid ILLEGAL_REQUEST, 0x26, 2
#define scst_sense_invalid_release ILLEGAL_REQUEST, 0x26, 4
#define scst_sense_too_many_target_descriptors ILLEGAL_REQUEST, 0x26, 6
#define scst_sense_unsupported_tgt_descr_type ILLEGAL_REQUEST, 0x26, 7
#define scst_sense_too_many_segment_descriptors ILLEGAL_REQUEST, 0x26, 8
#define scst_sense_unsupported_seg_descr_type ILLEGAL_REQUEST, 0x26, 9
#define scst_sense_inline_data_length_exceeded ILLEGAL_REQUEST, 0x26, 0xB
#define scst_sense_saving_params_unsup ILLEGAL_REQUEST, 0x39, 0
#define scst_sense_invalid_message ILLEGAL_REQUEST, 0x49, 0
#define scst_sense_parameter_list_length_invalid ILLEGAL_REQUEST, 0x1A, 0
#define scst_sense_invalid_field_in_command_information_unit ILLEGAL_REQUEST, 0xE, 0x3
/* UNIT_ATTENTION is 6 */
#define scst_sense_medium_changed_UA UNIT_ATTENTION, 0x28, 0
#define scst_sense_reset_UA UNIT_ATTENTION, 0x29, 0
#define scst_sense_nexus_loss_UA UNIT_ATTENTION, 0x29, 0x7
#define scst_sense_reservation_preempted UNIT_ATTENTION, 0x2A, 0x03
#define scst_sense_reservation_released UNIT_ATTENTION, 0x2A, 0x04
#define scst_sense_registrations_preempted UNIT_ATTENTION, 0x2A, 0x05
#define scst_sense_asym_access_state_changed UNIT_ATTENTION, 0x2A, 0x06
#define scst_sense_capacity_data_changed UNIT_ATTENTION, 0x2A, 0x9
#define scst_sense_cleared_by_another_ini_UA UNIT_ATTENTION, 0x2F, 0
#define scst_sense_tp_soft_threshold_reached UNIT_ATTENTION, 0x38, 0x7
#define scst_sense_inquiry_data_changed UNIT_ATTENTION, 0x3F, 0x3
#define scst_sense_reported_luns_data_changed UNIT_ATTENTION, 0x3F, 0xE
/* DATA_PROTECT is 7 */
#define scst_sense_data_protect DATA_PROTECT, 0x00, 0
#define scst_space_allocation_failed_write_protect DATA_PROTECT, 0x27, 7
/* ABORTED_COMMAND is 0xb */
#define scst_sense_aborted_command ABORTED_COMMAND, 0x00, 0
#define scst_logical_block_guard_check_failed ABORTED_COMMAND, 0x10, 1
#define scst_logical_block_app_tag_check_failed ABORTED_COMMAND, 0x10, 2
#define scst_logical_block_ref_tag_check_failed ABORTED_COMMAND, 0x10, 3
#define scst_sense_internal_failure ABORTED_COMMAND, 0x44, 0 /* retriable */
/* MISCOMPARE is 0xe */
#define scst_sense_miscompare_error MISCOMPARE, 0x1D, 0
/*************************************************************
* SCSI opcodes not listed anywhere else
*************************************************************/
#define INIT_ELEMENT_STATUS 0x07
#define INIT_ELEMENT_STATUS_RANGE 0x37
#define PREVENT_ALLOW_MEDIUM 0x1E
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 38) \
&& (!defined(RHEL_MAJOR) || RHEL_MAJOR -0 <= 5)
#define READ_ATTRIBUTE 0x8C
#endif
#define REQUEST_VOLUME_ADDRESS 0xB5
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 38) \
&& (!defined(RHEL_MAJOR) || RHEL_MAJOR -0 <= 5)
#define WRITE_ATTRIBUTE 0x8D
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 12, 0)
#define WRITE_VERIFY_16 0x8E
#endif
#define VERIFY_6 0x13
#ifndef VERIFY_12
#define VERIFY_12 0xAF
#endif
#if !defined(GENERATING_UPSTREAM_PATCH) || \
LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 38)
/*
* The constants below have been defined in the kernel header <scsi/scsi.h>
* and hence are not needed when this header file is included in kernel code.
* The definitions below are only used when this header file is included during
* compilation of SCST's user space components.
*/
#ifndef GET_EVENT_STATUS_NOTIFICATION
/* Upstream commit 93aae17a (v2.6.38) */
#define GET_EVENT_STATUS_NOTIFICATION 0x4a
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 26)
#define VARIABLE_LENGTH_CMD 0x7f
#endif
#ifndef READ_16
#define READ_16 0x88
#endif
#ifndef WRITE_16
#define WRITE_16 0x8a
#endif
#ifndef VERIFY_16
#define VERIFY_16 0x8f
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 38)
#ifndef MI_REPORT_IDENTIFYING_INFORMATION
#define MI_REPORT_IDENTIFYING_INFORMATION 0x05
#endif
#ifndef MI_REPORT_SUPPORTED_OPERATION_CODES
#define MI_REPORT_SUPPORTED_OPERATION_CODES 0x0c
#endif
#ifndef MI_REPORT_SUPPORTED_TASK_MANAGEMENT_FUNCTIONS
#define MI_REPORT_SUPPORTED_TASK_MANAGEMENT_FUNCTIONS 0x0d
#endif
#endif
#ifndef SAI_READ_CAPACITY_16
/* values for service action in */
#define SAI_READ_CAPACITY_16 0x10
#endif
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 33)
#ifndef SAI_GET_LBA_STATUS
#define SAI_GET_LBA_STATUS 0x12
#endif
#endif
#ifndef GENERATING_UPSTREAM_PATCH
#ifndef REPORT_LUNS
#define REPORT_LUNS 0xa0
#endif
#endif
#ifndef WRITE_SAME_16
#define WRITE_SAME_16 0x93
#endif
#ifndef EXTENDED_COPY
#define EXTENDED_COPY 0x83
#endif
#ifndef RECEIVE_COPY_RESULTS
#define RECEIVE_COPY_RESULTS 0x84
#endif
#ifndef SYNCHRONIZE_CACHE_16
#define SYNCHRONIZE_CACHE_16 0x91
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 33)
/*
* From <scsi/scsi.h>. See also commit
* f57e4502cea471c69782d4790c71d8414ab49a9d.
*/
#define UNMAP 0x42
#endif
/* Subcodes of VARIABLE_LENGTH_CMD (0x7F) */
#define SUBCODE_READ_32 0x09
#define SUBCODE_VERIFY_32 0x0a
#define SUBCODE_WRITE_32 0x0b
#define SUBCODE_WRITE_VERIFY_32 0x0c
#define SUBCODE_WRITE_SAME_32 0x0d
#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 12, 0)
/*
* From <scsi/scsi.h>. See also commit
* 1c68cc1626341665a8bd1d2c7dfffd7fc852a79c.
*/
#ifndef COMPARE_AND_WRITE
#define COMPARE_AND_WRITE 0x89
#endif
#endif
#if !defined(__KERNEL__) || LINUX_VERSION_CODE < KERNEL_VERSION(3, 19, 0)
/*
* See also patch "scsi: rename SERVICE_ACTION_IN_16 to SERVICE_ACTION_IN_16"
* (commit eb846d9f147455e4e5e1863bfb5e31974bb69b7c; kernel 3.19.0).
*/
#ifndef SERVICE_ACTION_IN_16
#define SERVICE_ACTION_IN_16 0x9e
#endif
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 28)
/*
* From <linux/fs.h>. See also commit
* d30a2605be9d5132d95944916e8f578fcfe4f976.
*/
#define BLKDISCARD _IO(0x12, 119)
#endif
/*************************************************************
** 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
/*************************************************************
** Control byte field in CDB
*************************************************************/
#define CONTROL_BYTE_LINK_BIT 0x01
#define CONTROL_BYTE_NACA_BIT 0x04
/*************************************************************
** Byte 1 in INQUIRY CDB
*************************************************************/
#define SCST_INQ_EVPD 0x01
/*************************************************************
** TPGS field in byte 5 of the INQUIRY response (SPC-4).
*************************************************************/
enum {
SCST_INQ_TPGS_MODE_IMPLICIT = 0x10,
SCST_INQ_TPGS_MODE_EXPLICIT = 0x20,
};
/*************************************************************
** Byte 2 in RESERVE_10 CDB
*************************************************************/
#define SCST_RES_3RDPTY 0x10
#define SCST_RES_LONGID 0x02
/*************************************************************
** Values for the control mode page TST field
*************************************************************/
#define SCST_TST_0_SINGLE_TASK_SET 0
#define SCST_TST_1_SEP_TASK_SETS 1
/*******************************************************************
** Values for the control mode page QUEUE ALGORITHM MODIFIER field
*******************************************************************/
#define SCST_QUEUE_ALG_0_RESTRICTED_REORDER 0
#define SCST_QUEUE_ALG_1_UNRESTRICTED_REORDER 1
/*************************************************************
** Values for the control mode page D_SENSE field
*************************************************************/
#define SCST_D_SENSE_0_FIXED_SENSE 0
#define SCST_D_SENSE_1_DESCR_SENSE 1
/*************************************************************
** Values for the control mode page QErr field
*************************************************************/
#define SCST_QERR_0_ALL_RESUME 0
#define SCST_QERR_1_ABORT_ALL 1
#define SCST_QERR_2_RESERVED 2
#define SCST_QERR_3_ABORT_THIS_NEXUS_ONLY 3
/*************************************************************
** Values for the control mode page ATO field
*************************************************************/
/* I.e., app tags owned by storage */
#define SCST_ATO_0_MODIFIED_BY_STORAGE 0
/* I.e., app tags owned by application */
#define SCST_ATO_1_NOT_MODIFIED_BY_STORAGE 1
/*************************************************************
** Values for the control mode page DPICZ field
*************************************************************/
#define SCST_DPICZ_CHECK_ON_xPROT_0 0
#define SCST_DPICZ_NO_CHECK_ON_xPROT_0 1
/*************************************************************
** APP/REF TAG DIF constants
*************************************************************/
/* Skip all guards checks for this block */
#define SCST_DIF_NO_CHECK_ALL_APP_TAG cpu_to_be16(0xFFFF)
#define SCST_DIF_NO_CHECK_ALL_REF_TAG cpu_to_be32(0xFFFFFFFF)
/* Don't check app tag for this block */
#define SCST_DIF_NO_CHECK_APP_TAG 0
/*************************************************************
** Shift of size of DIF tag (8 bytes)
*************************************************************/
#define SCST_DIF_TAG_SHIFT 3
/*************************************************************
** Formats of DIF guard tags
*************************************************************/
#define SCST_DIF_GUARD_FORMAT_CRC 0
#define SCST_DIF_GUARD_FORMAT_IP 1
/*************************************************************
** TransportID protocol identifiers
*************************************************************/
#define SCSI_TRANSPORTID_PROTOCOLID_FCP2 0
#define SCSI_TRANSPORTID_PROTOCOLID_SPI5 1
#define SCSI_TRANSPORTID_PROTOCOLID_SRP 4
#define SCSI_TRANSPORTID_PROTOCOLID_ISCSI 5
#define SCSI_TRANSPORTID_PROTOCOLID_SAS 6
/*
* SCST extension. Added, because there is no TransportID for Copy Manager
* defined anywhere in the SCSI standards.
*/
#define SCST_TRANSPORTID_PROTOCOLID_COPY_MGR 0xC
/**
* enum scst_tg_state - SCSI target port group asymmetric access state.
*
* See also the documentation of the REPORT TARGET PORT GROUPS command in SPC-4.
*/
enum scst_tg_state {
SCST_TG_STATE_UNDEFINED = -1,
SCST_TG_STATE_OPTIMIZED = 0x0,
SCST_TG_STATE_NONOPTIMIZED = 0x1,
SCST_TG_STATE_STANDBY = 0x2,
SCST_TG_STATE_UNAVAILABLE = 0x3,
SCST_TG_STATE_LBA_DEPENDENT = 0x4,
SCST_TG_STATE_OFFLINE = 0xe,
SCST_TG_STATE_TRANSITIONING = 0xf,
};
/**
* Target port group preferred bit.
*
* See also the documentation of the REPORT TARGET PORT GROUPS command in SPC-4.
*/
enum {
SCST_TG_PREFERRED = 0x80,
};
/**
* enum scst_tg_sup - Supported SCSI target port group states.
*
* See also the documentation of the REPORT TARGET PORT GROUPS command in SPC-4.
*/
enum scst_tg_sup {
SCST_TG_SUP_OPTIMIZED = 0x01,
SCST_TG_SUP_NONOPTIMIZED = 0x02,
SCST_TG_SUP_STANDBY = 0x04,
SCST_TG_SUP_UNAVAILABLE = 0x08,
SCST_TG_SUP_LBA_DEPENDENT = 0x10,
SCST_TG_SUP_OFFLINE = 0x40,
SCST_TG_SUP_TRANSITION = 0x80,
};
/*************************************************************
** Misc SCSI constants
*************************************************************/
#define SCST_SENSE_ASC_UA_RESET 0x29
/*************************************************************
** Compatibility constants
*************************************************************/
#ifndef DID_TRANSPORT_DISRUPTED
#define DID_TRANSPORT_DISRUPTED 0xe
#endif
#ifndef DID_TRANSPORT_FAILFAST
#define DID_TRANSPORT_FAILFAST 0xf
#endif
/* See also patch "Add detailed SCSI I/O errors" (commit ID 63583cca745f) */
#ifndef DID_TARGET_FAILURE
#define DID_TARGET_FAILURE 0x10
#endif
#ifndef DID_NEXUS_FAILURE
#define DID_NEXUS_FAILURE 0x11
#endif
#ifndef DID_ALLOC_FAILURE
#define DID_ALLOC_FAILURE 0x12
#endif
#ifndef DID_MEDIUM_ERROR
#define DID_MEDIUM_ERROR 0x13
#endif
/*************************************************************
** Various timeouts
*************************************************************/
#define SCST_DEFAULT_TIMEOUT (30 * HZ)
#define SCST_DEFAULT_NOMINAL_TIMEOUT_SEC 1
#define SCST_GENERIC_CHANGER_TIMEOUT (3 * HZ)
#define SCST_GENERIC_CHANGER_LONG_TIMEOUT (14000 * HZ)
#define SCST_GENERIC_PROCESSOR_TIMEOUT (3 * HZ)
#define SCST_GENERIC_PROCESSOR_LONG_TIMEOUT (14000 * HZ)
#define SCST_GENERIC_TAPE_SMALL_TIMEOUT (3 * HZ)
#define SCST_GENERIC_TAPE_REG_TIMEOUT (900 * HZ)
#define SCST_GENERIC_TAPE_LONG_TIMEOUT (14000 * HZ)
#define SCST_GENERIC_MODISK_SMALL_TIMEOUT (3 * HZ)
#define SCST_GENERIC_MODISK_REG_TIMEOUT (900 * HZ)
#define SCST_GENERIC_MODISK_LONG_TIMEOUT (14000 * HZ)
#define SCST_GENERIC_DISK_SMALL_TIMEOUT (10 * HZ)
#define SCST_GENERIC_DISK_REG_TIMEOUT (60 * HZ)
#define SCST_GENERIC_DISK_LONG_TIMEOUT (3600 * HZ)
#define SCST_GENERIC_RAID_TIMEOUT (3 * HZ)
#define SCST_GENERIC_RAID_LONG_TIMEOUT (14000 * HZ)
#define SCST_GENERIC_CDROM_SMALL_TIMEOUT (3 * HZ)
#define SCST_GENERIC_CDROM_REG_TIMEOUT (900 * HZ)
#define SCST_GENERIC_CDROM_LONG_TIMEOUT (14000 * HZ)
#define SCST_MAX_OTHER_TIMEOUT (14000 * HZ)
/*************************************************************
** I/O grouping attribute string values. Must match constants
** w/o '_STR' suffix!
*************************************************************/
#define SCST_IO_GROUPING_AUTO_STR "auto"
#define SCST_IO_GROUPING_THIS_GROUP_ONLY_STR "this_group_only"
#define SCST_IO_GROUPING_NEVER_STR "never"
/*************************************************************
** Threads pool type attribute string values.
** Must match scst_dev_type_threads_pool_type!
*************************************************************/
#define SCST_THREADS_POOL_PER_INITIATOR_STR "per_initiator"
#define SCST_THREADS_POOL_SHARED_STR "shared"
/*************************************************************
** Misc constants
*************************************************************/
#define SCST_SYSFS_BLOCK_SIZE PAGE_SIZE
#define SCST_VAR_DIR "/var/lib/scst"
#define SCST_PR_DIR (SCST_VAR_DIR "/pr")
#define TID_COMMON_SIZE 24
#define SCST_SYSFS_KEY_MARK "[key]"
#define SCST_MIN_REL_TGT_ID 1
#define SCST_MAX_REL_TGT_ID 65535
/*
* Error code returned by target attribute sysfs methods if invoked after
* scst_register_target() finished but before before scst_tgt_set_tgt_priv()
* has been invoked.
*/
enum {
E_TGT_PRIV_NOT_YET_SET = EBUSY
};
/* Size of the lock value block in the DLM PR lockspace */
#define PR_DLM_LVB_LEN 256
#endif /* __SCST_CONST_H */
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