1#ifndef TARGET_CORE_BACKEND_H
 2#define TARGET_CORE_BACKEND_H
 3
 4#define TRANSPORT_PLUGIN_PHBA_PDEV		1
 5#define TRANSPORT_PLUGIN_VHBA_PDEV		2
 6#define TRANSPORT_PLUGIN_VHBA_VDEV		3
 7
 8struct se_subsystem_api {
 9	struct list_head sub_api_list;
10
11	char name[16];
12	struct module *owner;
13
14	u8 transport_type;
15
16	unsigned int fua_write_emulated : 1;
17	unsigned int write_cache_emulated : 1;
18
19	int (*attach_hba)(struct se_hba *, u32);
20	void (*detach_hba)(struct se_hba *);
21	int (*pmode_enable_hba)(struct se_hba *, unsigned long);
22	void *(*allocate_virtdevice)(struct se_hba *, const char *);
23	struct se_device *(*create_virtdevice)(struct se_hba *,
24				struct se_subsystem_dev *, void *);
25	void (*free_device)(void *);
26	int (*transport_complete)(struct se_cmd *cmd, struct scatterlist *);
27	int (*execute_cmd)(struct se_cmd *, struct scatterlist *, u32,
28			enum dma_data_direction);
29	int (*do_discard)(struct se_device *, sector_t, u32);
30	void (*do_sync_cache)(struct se_cmd *);
31	ssize_t (*check_configfs_dev_params)(struct se_hba *,
32			struct se_subsystem_dev *);
33	ssize_t (*set_configfs_dev_params)(struct se_hba *,
34			struct se_subsystem_dev *, const char *, ssize_t);
35	ssize_t (*show_configfs_dev_params)(struct se_hba *,
36			struct se_subsystem_dev *, char *);
37	u32 (*get_device_rev)(struct se_device *);
38	u32 (*get_device_type)(struct se_device *);
39	sector_t (*get_blocks)(struct se_device *);
40	unsigned char *(*get_sense_buffer)(struct se_cmd *);
41};
42
43int	transport_subsystem_register(struct se_subsystem_api *);
44void	transport_subsystem_release(struct se_subsystem_api *);
45
46struct se_device *transport_add_device_to_core_hba(struct se_hba *,
47		struct se_subsystem_api *, struct se_subsystem_dev *, u32,
48		void *, struct se_dev_limits *, const char *, const char *);
49
50void	target_complete_cmd(struct se_cmd *, u8);
51
52void	transport_set_vpd_proto_id(struct t10_vpd *, unsigned char *);
53int	transport_set_vpd_assoc(struct t10_vpd *, unsigned char *);
54int	transport_set_vpd_ident_type(struct t10_vpd *, unsigned char *);
55int	transport_set_vpd_ident(struct t10_vpd *, unsigned char *);
56
57/* core helpers also used by command snooping in pscsi */
58void	*transport_kmap_data_sg(struct se_cmd *);
59void	transport_kunmap_data_sg(struct se_cmd *);
60
61void	array_free(void *array, int n);
62
63#endif /* TARGET_CORE_BACKEND_H */