#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 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 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 */