#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_TASK_TIMEOUT -10 #define PYX_TRANSPORT_RESERVATION_CONFLICT -11 #define PYX_TRANSPORT_ILLEGAL_REQUEST -12 #define PYX_TRANSPORT_USE_SENSE_REASON -13 #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 /* For SE OBJ Plugins, in seconds */ #define TRANSPORT_TIMEOUT_TUR 10 #define TRANSPORT_TIMEOUT_TYPE_DISK 60 #define TRANSPORT_TIMEOUT_TYPE_ROM 120 #define TRANSPORT_TIMEOUT_TYPE_TAPE 600 #define TRANSPORT_TIMEOUT_TYPE_OTHER 300 /* For se_task->task_state_flags */ #define TSF_EXCEPTION_CLEARED 0x01 /* * 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 */ /* 10 Minutes */ #define DA_TASK_TIMEOUT_MAX 600 /* 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 #define SE_MODE_PAGE_BUF 512 #define MOD_MAX_SECTORS(ms, bs) (ms % (PAGE_SIZE / bs)) struct se_mem; struct se_subsystem_api; extern struct kmem_cache *se_mem_cache; 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 int 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_cmd_finish_abort_tmr(struct se_cmd *); 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 *); 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 void transport_free_se_cmd(struct se_cmd *); extern int transport_generic_allocate_tasks(struct se_cmd *, unsigned char *); extern int transport_generic_handle_cdb(struct se_cmd *); 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 void transport_generic_free_cmd_intr(struct se_cmd *); extern void __transport_stop_task_timer(struct se_task *, unsigned long *); extern unsigned char transport_asciihex_to_binaryhex(unsigned char val[2]); 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 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, int); extern void transport_generic_wait_for_cmds(struct se_cmd *, int); extern int transport_init_task_sg(struct se_task *, struct se_mem *, u32); extern int transport_map_mem_to_sg(struct se_task *, struct list_head *, struct scatterlist *, struct se_mem *, struct se_mem **, u32 *, u32 *); 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 *); /* * 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; /* * struct module for struct se_hba references */ struct module *owner; /* * Used for global se_subsystem_api list_head */ struct list_head sub_api_list; /* * For SCF_SCSI_NON_DATA_CDB */ int (*cdb_none)(struct se_task *); /* * For SCF_SCSI_DATA_SG_IO_CDB and SCF_SCSI_CONTROL_SG_IO_CDB */ int (*map_task_SG)(struct se_task *); /* * 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 *); /* * dpo_emulated(): */ int (*dpo_emulated)(struct se_device *); /* * fua_write_emulated(): */ int (*fua_write_emulated)(struct se_device *); /* * fua_read_emulated(): */ int (*fua_read_emulated)(struct se_device *); /* * write_cache_emulated(): */ int (*write_cache_emulated)(struct se_device *); /* * 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_cdb(): */ unsigned char *(*get_cdb)(struct se_task *); /* * 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 */