[deliverable/linux.git] / include / target / target_core_transport.h

#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
/* 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 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_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 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 void transport_generic_free_cmd_intr(struct se_cmd *);
extern void __transport_stop_task_timer(struct se_task *, unsigned long *);
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 void 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 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 *);

/*
 * 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;
	/*
	 * 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 */
Commit	Line	Data
c66ac9db NB	1	#ifndef TARGET_CORE_TRANSPORT_H
	2	#define TARGET_CORE_TRANSPORT_H
	3
	4	#define TARGET_CORE_VERSION TARGET_CORE_MOD_VERSION
	5
	6	/* Attempts before moving from SHORT to LONG */
	7	#define PYX_TRANSPORT_WINDOW_CLOSED_THRESHOLD 3
	8	#define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_SHORT 3 /* In milliseconds */
	9	#define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_LONG 10 /* In milliseconds */
	10
	11	#define PYX_TRANSPORT_STATUS_INTERVAL 5 /* In seconds */
	12
	13	#define PYX_TRANSPORT_SENT_TO_TRANSPORT 0
	14	#define PYX_TRANSPORT_WRITE_PENDING 1
	15
	16	#define PYX_TRANSPORT_UNKNOWN_SAM_OPCODE -1
	17	#define PYX_TRANSPORT_HBA_QUEUE_FULL -2
	18	#define PYX_TRANSPORT_REQ_TOO_MANY_SECTORS -3
	19	#define PYX_TRANSPORT_OUT_OF_MEMORY_RESOURCES -4
	20	#define PYX_TRANSPORT_INVALID_CDB_FIELD -5
	21	#define PYX_TRANSPORT_INVALID_PARAMETER_LIST -6
	22	#define PYX_TRANSPORT_LU_COMM_FAILURE -7
	23	#define PYX_TRANSPORT_UNKNOWN_MODE_PAGE -8
	24	#define PYX_TRANSPORT_WRITE_PROTECTED -9
	25	#define PYX_TRANSPORT_TASK_TIMEOUT -10
	26	#define PYX_TRANSPORT_RESERVATION_CONFLICT -11
	27	#define PYX_TRANSPORT_ILLEGAL_REQUEST -12
	28	#define PYX_TRANSPORT_USE_SENSE_REASON -13
	29
	30	#ifndef SAM_STAT_RESERVATION_CONFLICT
	31	#define SAM_STAT_RESERVATION_CONFLICT 0x18
	32	#endif
	33
	34	#define TRANSPORT_PLUGIN_FREE 0
	35	#define TRANSPORT_PLUGIN_REGISTERED 1
	36
	37	#define TRANSPORT_PLUGIN_PHBA_PDEV 1
	38	#define TRANSPORT_PLUGIN_VHBA_PDEV 2
	39	#define TRANSPORT_PLUGIN_VHBA_VDEV 3
	40
	41	/* For SE OBJ Plugins, in seconds */
	42	#define TRANSPORT_TIMEOUT_TUR 10
	43	#define TRANSPORT_TIMEOUT_TYPE_DISK 60
	44	#define TRANSPORT_TIMEOUT_TYPE_ROM 120
	45	#define TRANSPORT_TIMEOUT_TYPE_TAPE 600
	46	#define TRANSPORT_TIMEOUT_TYPE_OTHER 300
	47
	48	/* For se_task->task_state_flags */
	49	#define TSF_EXCEPTION_CLEARED 0x01
	50
	51	/*
	52	* struct se_subsystem_dev->su_dev_flags
	53	*/
	54	#define SDF_FIRMWARE_VPD_UNIT_SERIAL 0x00000001
	55	#define SDF_EMULATED_VPD_UNIT_SERIAL 0x00000002
	56	#define SDF_USING_UDEV_PATH 0x00000004
	57	#define SDF_USING_ALIAS 0x00000008
	58
	59	/*
	60	* struct se_device->dev_flags
	61	*/
	62	#define DF_READ_ONLY 0x00000001
	63	#define DF_SPC2_RESERVATIONS 0x00000002
	64	#define DF_SPC2_RESERVATIONS_WITH_ISID 0x00000004
65
66	/* struct se_dev_attrib sanity values */
67	/* 10 Minutes */
68	#define DA_TASK_TIMEOUT_MAX 600
69	/* Default max_unmap_lba_count */
70	#define DA_MAX_UNMAP_LBA_COUNT 0
71	/* Default max_unmap_block_desc_count */
72	#define DA_MAX_UNMAP_BLOCK_DESC_COUNT 0
73	/* Default unmap_granularity */
74	#define DA_UNMAP_GRANULARITY_DEFAULT 0
75	/* Default unmap_granularity_alignment */
76	#define DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT 0
77	/* Emulation for Direct Page Out */
78	#define DA_EMULATE_DPO 0
79	/* Emulation for Forced Unit Access WRITEs */
80	#define DA_EMULATE_FUA_WRITE 1
81	/* Emulation for Forced Unit Access READs */
82	#define DA_EMULATE_FUA_READ 0
83	/* Emulation for WriteCache and SYNCHRONIZE_CACHE */
84	#define DA_EMULATE_WRITE_CACHE 0
85	/* Emulation for UNIT ATTENTION Interlock Control */
86	#define DA_EMULATE_UA_INTLLCK_CTRL 0
87	/* Emulation for TASK_ABORTED status (TAS) by default */
88	#define DA_EMULATE_TAS 1
89	/* Emulation for Thin Provisioning UNMAP using block/blk-lib.c:blkdev_issue_discard() */
90	#define DA_EMULATE_TPU 0
91	/*
92	* Emulation for Thin Provisioning WRITE_SAME w/ UNMAP=1 bit using
93	* block/blk-lib.c:blkdev_issue_discard()
94	*/
95	#define DA_EMULATE_TPWS 0
96	/* No Emulation for PSCSI by default */
97	#define DA_EMULATE_RESERVATIONS 0
98	/* No Emulation for PSCSI by default */
99	#define DA_EMULATE_ALUA 0
100	/* Enforce SCSI Initiator Port TransportID with 'ISID' for PR */
101	#define DA_ENFORCE_PR_ISIDS 1
102	#define DA_STATUS_MAX_SECTORS_MIN 16
103	#define DA_STATUS_MAX_SECTORS_MAX 8192
e22a7f07 RD	104	/* By default don't report non-rotating (solid state) medium */
e22a7f07 RD	105	#define DA_IS_NONROT 0
5de619a3 NB	106	/* Queue Algorithm Modifier default for restricted reordering in control mode page */
5de619a3 NB	107	#define DA_EMULATE_REST_REORD 0
c66ac9db NB	108
	109	#define SE_MODE_PAGE_BUF 512
	110
	111	#define MOD_MAX_SECTORS(ms, bs) (ms % (PAGE_SIZE / bs))
	112
c66ac9db NB	113	struct se_subsystem_api;
c66ac9db NB	114
e3d6f909 AG	115	extern int init_se_kmem_caches(void);
e3d6f909 AG	116	extern void release_se_kmem_caches(void);
e89d15ee	117	extern u32 scsi_get_new_index(scsi_index_t);
c66ac9db NB	118	extern void transport_init_queue_obj(struct se_queue_obj *);
	119	extern int transport_subsystem_check_init(void);
	120	extern int transport_subsystem_register(struct se_subsystem_api *);
	121	extern void transport_subsystem_release(struct se_subsystem_api *);
	122	extern void transport_load_plugins(void);
	123	extern struct se_session *transport_init_session(void);
	124	extern void __transport_register_session(struct se_portal_group *,
	125	struct se_node_acl *,
	126	struct se_session , void );
	127	extern void transport_register_session(struct se_portal_group *,
	128	struct se_node_acl *,
	129	struct se_session , void );
	130	extern void transport_free_session(struct se_session *);
	131	extern void transport_deregister_session_configfs(struct se_session *);
	132	extern void transport_deregister_session(struct se_session *);
	133	extern void transport_cmd_finish_abort(struct se_cmd *, int);
c66ac9db NB	134	extern void transport_complete_sync_cache(struct se_cmd *, int);
	135	extern void transport_complete_task(struct se_task *, int);
	136	extern void transport_add_task_to_execute_queue(struct se_task *,
	137	struct se_task *,
	138	struct se_device *);
52208ae3 NB	139	extern void transport_remove_task_from_execute_queue(struct se_task *,
52208ae3 NB	140	struct se_device *);
c66ac9db NB	141	unsigned char transport_dump_cmd_direction(struct se_cmd );
	142	extern void transport_dump_dev_state(struct se_device , char , int *);
	143	extern void transport_dump_dev_info(struct se_device , struct se_lun ,
	144	unsigned long long, char , int );
	145	extern void transport_dump_vpd_proto_id(struct t10_vpd *,
	146	unsigned char *, int);
	147	extern void transport_set_vpd_proto_id(struct t10_vpd , unsigned char );
	148	extern int transport_dump_vpd_assoc(struct t10_vpd *,
	149	unsigned char *, int);
	150	extern int transport_set_vpd_assoc(struct t10_vpd , unsigned char );
	151	extern int transport_dump_vpd_ident_type(struct t10_vpd *,
	152	unsigned char *, int);
	153	extern int transport_set_vpd_ident_type(struct t10_vpd , unsigned char );
	154	extern int transport_dump_vpd_ident(struct t10_vpd *,
	155	unsigned char *, int);
	156	extern int transport_set_vpd_ident(struct t10_vpd , unsigned char );
	157	extern struct se_device transport_add_device_to_core_hba(struct se_hba ,
	158	struct se_subsystem_api *,
	159	struct se_subsystem_dev *, u32,
	160	void , struct se_dev_limits ,
	161	const char , const char );
c66ac9db NB	162	extern void transport_init_se_cmd(struct se_cmd *,
	163	struct target_core_fabric_ops *,
	164	struct se_session *, u32, int, int,
	165	unsigned char *);
05d1c7c0 AG	166	void transport_kmap_first_data_page(struct se_cmd cmd);
05d1c7c0 AG	167	void transport_kunmap_first_data_page(struct se_cmd *cmd);
c66ac9db	168	extern int transport_generic_allocate_tasks(struct se_cmd , unsigned char );
695434e1	169	extern int transport_handle_cdb_direct(struct se_cmd *);
c66ac9db NB	170	extern int transport_generic_handle_cdb_map(struct se_cmd *);
	171	extern int transport_generic_handle_data(struct se_cmd *);
	172	extern void transport_new_cmd_failure(struct se_cmd *);
	173	extern int transport_generic_handle_tmr(struct se_cmd *);
f4366772	174	extern void transport_generic_free_cmd_intr(struct se_cmd *);
c66ac9db	175	extern void __transport_stop_task_timer(struct se_task , unsigned long );
c66ac9db NB	176	extern int transport_generic_map_mem_to_cmd(struct se_cmd cmd, struct scatterlist , u32,
	177	struct scatterlist *, u32);
	178	extern int transport_clear_lun_from_sessions(struct se_lun *);
d14921d6	179	extern void transport_wait_for_tasks(struct se_cmd *);
c66ac9db NB	180	extern int transport_check_aborted_status(struct se_cmd *, int);
	181	extern int transport_send_check_condition_and_sense(struct se_cmd *, u8, int);
	182	extern void transport_send_task_abort(struct se_cmd *);
35462975	183	extern void transport_release_cmd(struct se_cmd *);
39c05f32	184	extern void transport_generic_free_cmd(struct se_cmd *, int);
c66ac9db	185	extern void transport_generic_wait_for_cmds(struct se_cmd *, int);
c66ac9db NB	186	extern void transport_do_task_sg_chain(struct se_cmd *);
c66ac9db NB	187	extern void transport_generic_process_write(struct se_cmd *);
a1d8b49a	188	extern int transport_generic_new_cmd(struct se_cmd *);
c66ac9db NB	189	extern int transport_generic_do_tmr(struct se_cmd *);
	190	/* From target_core_alua.c */
	191	extern int core_alua_check_nonop_delay(struct se_cmd *);
5dd7ed2e DC	192	/* From target_core_cdb.c */
5dd7ed2e DC	193	extern int transport_emulate_control_cdb(struct se_task *);
c66ac9db NB	194
	195	/*
	196	* Each se_transport_task_t can have N number of possible struct se_task's
	197	* for the storage transport(s) to possibly execute.
	198	* Used primarily for splitting up CDBs that exceed the physical storage
	199	* HBA's maximum sector count per task.
	200	*/
	201	struct se_mem {
	202	struct page *se_page;
	203	u32 se_len;
	204	u32 se_off;
	205	struct list_head se_list;
	206	} ____cacheline_aligned;
	207
	208	/*
	209	* Each type of disk transport supported MUST have a template defined
	210	* within its .h file.
	211	*/
	212	struct se_subsystem_api {
	213	/*
	214	* The Name. :-)
	215	*/
	216	char name[16];
	217	/*
	218	* Transport Type.
	219	*/
	220	u8 transport_type;
	221	/*
	222	* struct module for struct se_hba references
	223	*/
	224	struct module *owner;
	225	/*
	226	* Used for global se_subsystem_api list_head
	227	*/
	228	struct list_head sub_api_list;
c66ac9db NB	229	/*
	230	* attach_hba():
	231	*/
	232	int (attach_hba)(struct se_hba , u32);
	233	/*
	234	* detach_hba():
	235	*/
	236	void (detach_hba)(struct se_hba );
	237	/*
	238	* pmode_hba(): Used for TCM/pSCSI subsystem plugin HBA ->
	239	* Linux/SCSI struct Scsi_Host passthrough
	240	*/
	241	int (pmode_enable_hba)(struct se_hba , unsigned long);
	242	/*
	243	* allocate_virtdevice():
	244	*/
	245	void (allocate_virtdevice)(struct se_hba , const char );
	246	/*
	247	* create_virtdevice(): Only for Virtual HBAs
	248	*/
	249	struct se_device (create_virtdevice)(struct se_hba *,
	250	struct se_subsystem_dev , void );
	251	/*
	252	* free_device():
	253	*/
	254	void (free_device)(void );
	255
	256	/*
	257	* dpo_emulated():
	258	*/
	259	int (dpo_emulated)(struct se_device );
	260	/*
	261	* fua_write_emulated():
	262	*/
	263	int (fua_write_emulated)(struct se_device );
	264	/*
	265	* fua_read_emulated():
	266	*/
	267	int (fua_read_emulated)(struct se_device );
	268	/*
	269	* write_cache_emulated():
	270	*/
	271	int (write_cache_emulated)(struct se_device );
	272	/*
	273	* transport_complete():
	274	*
	275	* Use transport_generic_complete() for majority of DAS transport
	276	* drivers. Provided out of convenience.
	277	*/
	278	int (transport_complete)(struct se_task task);
6708bb27	279	struct se_task (alloc_task)(unsigned char *cdb);
c66ac9db NB	280	/*
	281	* do_task():
	282	*/
	283	int (do_task)(struct se_task );
	284	/*
	285	* Used by virtual subsystem plugins IBLOCK and FILEIO to emulate
	286	* UNMAP and WRITE_SAME_* w/ UNMAP=1 <-> Linux/Block Discard
	287	*/
	288	int (do_discard)(struct se_device , sector_t, u32);
	289	/*
	290	* Used by virtual subsystem plugins IBLOCK and FILEIO to emulate
	291	* SYNCHRONIZE_CACHE_* <-> Linux/Block blkdev_issue_flush()
	292	*/
	293	void (do_sync_cache)(struct se_task );
	294	/*
	295	* free_task():
	296	*/
	297	void (free_task)(struct se_task );
	298	/*
	299	* check_configfs_dev_params():
	300	*/
	301	ssize_t (check_configfs_dev_params)(struct se_hba , struct se_subsystem_dev *);
	302	/*
	303	* set_configfs_dev_params():
	304	*/
	305	ssize_t (set_configfs_dev_params)(struct se_hba , struct se_subsystem_dev *,
	306	const char *, ssize_t);
	307	/*
	308	* show_configfs_dev_params():
	309	*/
	310	ssize_t (show_configfs_dev_params)(struct se_hba , struct se_subsystem_dev *,
	311	char *);
	312	/*
	313	* get_cdb():
	314	*/
	315	unsigned char (get_cdb)(struct se_task *);
	316	/*
	317	* get_device_rev():
	318	*/
	319	u32 (get_device_rev)(struct se_device );
	320	/*
	321	* get_device_type():
	322	*/
	323	u32 (get_device_type)(struct se_device );
	324	/*
	325	* Get the sector_t from a subsystem backstore..
	326	*/
	327	sector_t (get_blocks)(struct se_device );
c66ac9db NB	328	/*
	329	* get_sense_buffer():
	330	*/
	331	unsigned char (get_sense_buffer)(struct se_task *);
	332	} ____cacheline_aligned;
	333
c66ac9db	334	#endif /* TARGET_CORE_TRANSPORT_H */