| #ifndef TARGET_CORE_TRANSPORT_H |
| #define TARGET_CORE_TRANSPORT_H |
| |
| #define TARGET_CORE_VERSION TARGET_CORE_MOD_VERSION |
| |
| /* Attempts before moving from SHORT to LONG */ |
| #define PYX_TRANSPORT_WINDOW_CLOSED_THRESHOLD 3 |
| #define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_SHORT 3 /* In milliseconds */ |
| #define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_LONG 10 /* In milliseconds */ |
| |
| #define PYX_TRANSPORT_STATUS_INTERVAL 5 /* In seconds */ |
| |
| #define PYX_TRANSPORT_SENT_TO_TRANSPORT 0 |
| #define PYX_TRANSPORT_WRITE_PENDING 1 |
| |
| #define PYX_TRANSPORT_UNKNOWN_SAM_OPCODE -1 |
| #define PYX_TRANSPORT_HBA_QUEUE_FULL -2 |
| #define PYX_TRANSPORT_REQ_TOO_MANY_SECTORS -3 |
| #define PYX_TRANSPORT_OUT_OF_MEMORY_RESOURCES -4 |
| #define PYX_TRANSPORT_INVALID_CDB_FIELD -5 |
| #define PYX_TRANSPORT_INVALID_PARAMETER_LIST -6 |
| #define PYX_TRANSPORT_LU_COMM_FAILURE -7 |
| #define PYX_TRANSPORT_UNKNOWN_MODE_PAGE -8 |
| #define PYX_TRANSPORT_WRITE_PROTECTED -9 |
| #define PYX_TRANSPORT_RESERVATION_CONFLICT -10 |
| #define PYX_TRANSPORT_ILLEGAL_REQUEST -11 |
| #define PYX_TRANSPORT_USE_SENSE_REASON -12 |
| |
| #ifndef SAM_STAT_RESERVATION_CONFLICT |
| #define SAM_STAT_RESERVATION_CONFLICT 0x18 |
| #endif |
| |
| #define TRANSPORT_PLUGIN_FREE 0 |
| #define TRANSPORT_PLUGIN_REGISTERED 1 |
| |
| #define TRANSPORT_PLUGIN_PHBA_PDEV 1 |
| #define TRANSPORT_PLUGIN_VHBA_PDEV 2 |
| #define TRANSPORT_PLUGIN_VHBA_VDEV 3 |
| |
| /* |
| * struct se_subsystem_dev->su_dev_flags |
| */ |
| #define SDF_FIRMWARE_VPD_UNIT_SERIAL 0x00000001 |
| #define SDF_EMULATED_VPD_UNIT_SERIAL 0x00000002 |
| #define SDF_USING_UDEV_PATH 0x00000004 |
| #define SDF_USING_ALIAS 0x00000008 |
| |
| /* |
| * struct se_device->dev_flags |
| */ |
| #define DF_READ_ONLY 0x00000001 |
| #define DF_SPC2_RESERVATIONS 0x00000002 |
| #define DF_SPC2_RESERVATIONS_WITH_ISID 0x00000004 |
| |
| /* struct se_dev_attrib sanity values */ |
| /* Default max_unmap_lba_count */ |
| #define DA_MAX_UNMAP_LBA_COUNT 0 |
| /* Default max_unmap_block_desc_count */ |
| #define DA_MAX_UNMAP_BLOCK_DESC_COUNT 0 |
| /* Default unmap_granularity */ |
| #define DA_UNMAP_GRANULARITY_DEFAULT 0 |
| /* Default unmap_granularity_alignment */ |
| #define DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT 0 |
| /* Emulation for Direct Page Out */ |
| #define DA_EMULATE_DPO 0 |
| /* Emulation for Forced Unit Access WRITEs */ |
| #define DA_EMULATE_FUA_WRITE 1 |
| /* Emulation for Forced Unit Access READs */ |
| #define DA_EMULATE_FUA_READ 0 |
| /* Emulation for WriteCache and SYNCHRONIZE_CACHE */ |
| #define DA_EMULATE_WRITE_CACHE 0 |
| /* Emulation for UNIT ATTENTION Interlock Control */ |
| #define DA_EMULATE_UA_INTLLCK_CTRL 0 |
| /* Emulation for TASK_ABORTED status (TAS) by default */ |
| #define DA_EMULATE_TAS 1 |
| /* Emulation for Thin Provisioning UNMAP using block/blk-lib.c:blkdev_issue_discard() */ |
| #define DA_EMULATE_TPU 0 |
| /* |
| * Emulation for Thin Provisioning WRITE_SAME w/ UNMAP=1 bit using |
| * block/blk-lib.c:blkdev_issue_discard() |
| */ |
| #define DA_EMULATE_TPWS 0 |
| /* No Emulation for PSCSI by default */ |
| #define DA_EMULATE_RESERVATIONS 0 |
| /* No Emulation for PSCSI by default */ |
| #define DA_EMULATE_ALUA 0 |
| /* Enforce SCSI Initiator Port TransportID with 'ISID' for PR */ |
| #define DA_ENFORCE_PR_ISIDS 1 |
| #define DA_STATUS_MAX_SECTORS_MIN 16 |
| #define DA_STATUS_MAX_SECTORS_MAX 8192 |
| /* By default don't report non-rotating (solid state) medium */ |
| #define DA_IS_NONROT 0 |
| /* Queue Algorithm Modifier default for restricted reordering in control mode page */ |
| #define DA_EMULATE_REST_REORD 0 |
| |
| #define SE_MODE_PAGE_BUF 512 |
| |
| #define MOD_MAX_SECTORS(ms, bs) (ms % (PAGE_SIZE / bs)) |
| |
| struct se_subsystem_api; |
| |
| extern int init_se_kmem_caches(void); |
| extern void release_se_kmem_caches(void); |
| extern u32 scsi_get_new_index(scsi_index_t); |
| extern void transport_init_queue_obj(struct se_queue_obj *); |
| extern void transport_subsystem_check_init(void); |
| extern int transport_subsystem_register(struct se_subsystem_api *); |
| extern void transport_subsystem_release(struct se_subsystem_api *); |
| extern void transport_load_plugins(void); |
| extern struct se_session *transport_init_session(void); |
| extern void __transport_register_session(struct se_portal_group *, |
| struct se_node_acl *, |
| struct se_session *, void *); |
| extern void transport_register_session(struct se_portal_group *, |
| struct se_node_acl *, |
| struct se_session *, void *); |
| extern void transport_free_session(struct se_session *); |
| extern void transport_deregister_session_configfs(struct se_session *); |
| extern void transport_deregister_session(struct se_session *); |
| extern void transport_cmd_finish_abort(struct se_cmd *, int); |
| extern void transport_complete_sync_cache(struct se_cmd *, int); |
| extern void transport_complete_task(struct se_task *, int); |
| extern void transport_add_task_to_execute_queue(struct se_task *, |
| struct se_task *, |
| struct se_device *); |
| extern void transport_remove_task_from_execute_queue(struct se_task *, |
| struct se_device *); |
| extern void __transport_remove_task_from_execute_queue(struct se_task *, |
| struct se_device *); |
| unsigned char *transport_dump_cmd_direction(struct se_cmd *); |
| extern void transport_dump_dev_state(struct se_device *, char *, int *); |
| extern void transport_dump_dev_info(struct se_device *, struct se_lun *, |
| unsigned long long, char *, int *); |
| extern void transport_dump_vpd_proto_id(struct t10_vpd *, |
| unsigned char *, int); |
| extern void transport_set_vpd_proto_id(struct t10_vpd *, unsigned char *); |
| extern int transport_dump_vpd_assoc(struct t10_vpd *, |
| unsigned char *, int); |
| extern int transport_set_vpd_assoc(struct t10_vpd *, unsigned char *); |
| extern int transport_dump_vpd_ident_type(struct t10_vpd *, |
| unsigned char *, int); |
| extern int transport_set_vpd_ident_type(struct t10_vpd *, unsigned char *); |
| extern int transport_dump_vpd_ident(struct t10_vpd *, |
| unsigned char *, int); |
| extern int transport_set_vpd_ident(struct t10_vpd *, unsigned char *); |
| extern struct se_device *transport_add_device_to_core_hba(struct se_hba *, |
| struct se_subsystem_api *, |
| struct se_subsystem_dev *, u32, |
| void *, struct se_dev_limits *, |
| const char *, const char *); |
| extern void transport_init_se_cmd(struct se_cmd *, |
| struct target_core_fabric_ops *, |
| struct se_session *, u32, int, int, |
| unsigned char *); |
| void *transport_kmap_first_data_page(struct se_cmd *cmd); |
| void transport_kunmap_first_data_page(struct se_cmd *cmd); |
| extern int transport_generic_allocate_tasks(struct se_cmd *, unsigned char *); |
| extern int transport_handle_cdb_direct(struct se_cmd *); |
| extern int transport_generic_handle_cdb_map(struct se_cmd *); |
| extern int transport_generic_handle_data(struct se_cmd *); |
| extern void transport_new_cmd_failure(struct se_cmd *); |
| extern int transport_generic_handle_tmr(struct se_cmd *); |
| extern bool target_stop_task(struct se_task *task, unsigned long *flags); |
| extern int transport_generic_map_mem_to_cmd(struct se_cmd *cmd, struct scatterlist *, u32, |
| struct scatterlist *, u32); |
| extern int transport_clear_lun_from_sessions(struct se_lun *); |
| extern bool transport_wait_for_tasks(struct se_cmd *); |
| extern int transport_check_aborted_status(struct se_cmd *, int); |
| extern int transport_send_check_condition_and_sense(struct se_cmd *, u8, int); |
| extern void transport_send_task_abort(struct se_cmd *); |
| extern void transport_release_cmd(struct se_cmd *); |
| extern void transport_generic_free_cmd(struct se_cmd *, int); |
| extern void target_get_sess_cmd(struct se_session *, struct se_cmd *); |
| extern int target_put_sess_cmd(struct se_session *, struct se_cmd *); |
| extern void target_splice_sess_cmd_list(struct se_session *); |
| extern void target_wait_for_sess_cmds(struct se_session *, int); |
| extern void transport_generic_wait_for_cmds(struct se_cmd *, int); |
| extern void transport_do_task_sg_chain(struct se_cmd *); |
| extern void transport_generic_process_write(struct se_cmd *); |
| extern int transport_generic_new_cmd(struct se_cmd *); |
| extern int transport_generic_do_tmr(struct se_cmd *); |
| /* From target_core_alua.c */ |
| extern int core_alua_check_nonop_delay(struct se_cmd *); |
| /* From target_core_cdb.c */ |
| extern int transport_emulate_control_cdb(struct se_task *); |
| extern void target_get_task_cdb(struct se_task *task, unsigned char *cdb); |
| |
| /* |
| * Each se_transport_task_t can have N number of possible struct se_task's |
| * for the storage transport(s) to possibly execute. |
| * Used primarily for splitting up CDBs that exceed the physical storage |
| * HBA's maximum sector count per task. |
| */ |
| struct se_mem { |
| struct page *se_page; |
| u32 se_len; |
| u32 se_off; |
| struct list_head se_list; |
| } ____cacheline_aligned; |
| |
| /* |
| * Each type of disk transport supported MUST have a template defined |
| * within its .h file. |
| */ |
| struct se_subsystem_api { |
| /* |
| * The Name. :-) |
| */ |
| char name[16]; |
| /* |
| * Transport Type. |
| */ |
| u8 transport_type; |
| |
| unsigned int fua_write_emulated : 1; |
| unsigned int write_cache_emulated : 1; |
| |
| /* |
| * struct module for struct se_hba references |
| */ |
| struct module *owner; |
| /* |
| * Used for global se_subsystem_api list_head |
| */ |
| struct list_head sub_api_list; |
| /* |
| * attach_hba(): |
| */ |
| int (*attach_hba)(struct se_hba *, u32); |
| /* |
| * detach_hba(): |
| */ |
| void (*detach_hba)(struct se_hba *); |
| /* |
| * pmode_hba(): Used for TCM/pSCSI subsystem plugin HBA -> |
| * Linux/SCSI struct Scsi_Host passthrough |
| */ |
| int (*pmode_enable_hba)(struct se_hba *, unsigned long); |
| /* |
| * allocate_virtdevice(): |
| */ |
| void *(*allocate_virtdevice)(struct se_hba *, const char *); |
| /* |
| * create_virtdevice(): Only for Virtual HBAs |
| */ |
| struct se_device *(*create_virtdevice)(struct se_hba *, |
| struct se_subsystem_dev *, void *); |
| /* |
| * free_device(): |
| */ |
| void (*free_device)(void *); |
| |
| /* |
| * transport_complete(): |
| * |
| * Use transport_generic_complete() for majority of DAS transport |
| * drivers. Provided out of convenience. |
| */ |
| int (*transport_complete)(struct se_task *task); |
| struct se_task *(*alloc_task)(unsigned char *cdb); |
| /* |
| * do_task(): |
| */ |
| int (*do_task)(struct se_task *); |
| /* |
| * Used by virtual subsystem plugins IBLOCK and FILEIO to emulate |
| * UNMAP and WRITE_SAME_* w/ UNMAP=1 <-> Linux/Block Discard |
| */ |
| int (*do_discard)(struct se_device *, sector_t, u32); |
| /* |
| * Used by virtual subsystem plugins IBLOCK and FILEIO to emulate |
| * SYNCHRONIZE_CACHE_* <-> Linux/Block blkdev_issue_flush() |
| */ |
| void (*do_sync_cache)(struct se_task *); |
| /* |
| * free_task(): |
| */ |
| void (*free_task)(struct se_task *); |
| /* |
| * check_configfs_dev_params(): |
| */ |
| ssize_t (*check_configfs_dev_params)(struct se_hba *, struct se_subsystem_dev *); |
| /* |
| * set_configfs_dev_params(): |
| */ |
| ssize_t (*set_configfs_dev_params)(struct se_hba *, struct se_subsystem_dev *, |
| const char *, ssize_t); |
| /* |
| * show_configfs_dev_params(): |
| */ |
| ssize_t (*show_configfs_dev_params)(struct se_hba *, struct se_subsystem_dev *, |
| char *); |
| /* |
| * get_device_rev(): |
| */ |
| u32 (*get_device_rev)(struct se_device *); |
| /* |
| * get_device_type(): |
| */ |
| u32 (*get_device_type)(struct se_device *); |
| /* |
| * Get the sector_t from a subsystem backstore.. |
| */ |
| sector_t (*get_blocks)(struct se_device *); |
| /* |
| * get_sense_buffer(): |
| */ |
| unsigned char *(*get_sense_buffer)(struct se_task *); |
| } ____cacheline_aligned; |
| |
| #endif /* TARGET_CORE_TRANSPORT_H */ |