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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 char inquiry_prod[16];
13 char inquiry_rev[4];
14 struct module *owner;
15
16 u8 transport_type;
17
18 int (*attach_hba)(struct se_hba *, u32);
19 void (*detach_hba)(struct se_hba *);
20 int (*pmode_enable_hba)(struct se_hba *, unsigned long);
21
22 struct se_device *(*alloc_device)(struct se_hba *, const char *);
23 int (*configure_device)(struct se_device *);
24 void (*free_device)(struct se_device *device);
25
26 ssize_t (*set_configfs_dev_params)(struct se_device *,
27 const char *, ssize_t);
28 ssize_t (*show_configfs_dev_params)(struct se_device *, char *);
29
30 void (*transport_complete)(struct se_cmd *cmd,
31 struct scatterlist *,
32 unsigned char *);
33
34 sense_reason_t (*parse_cdb)(struct se_cmd *cmd);
35 u32 (*get_device_type)(struct se_device *);
36 sector_t (*get_blocks)(struct se_device *);
37 unsigned char *(*get_sense_buffer)(struct se_cmd *);
38 bool (*get_write_cache)(struct se_device *);
39};
40
41struct sbc_ops {
42 sense_reason_t (*execute_rw)(struct se_cmd *cmd, struct scatterlist *,
43 u32, enum dma_data_direction);
44 sense_reason_t (*execute_sync_cache)(struct se_cmd *cmd);
45 sense_reason_t (*execute_write_same)(struct se_cmd *cmd);
46 sense_reason_t (*execute_write_same_unmap)(struct se_cmd *cmd);
47 sense_reason_t (*execute_unmap)(struct se_cmd *cmd);
48};
49
50int transport_subsystem_register(struct se_subsystem_api *);
51void transport_subsystem_release(struct se_subsystem_api *);
52
53void target_complete_cmd(struct se_cmd *, u8);
54
55sense_reason_t spc_parse_cdb(struct se_cmd *cmd, unsigned int *size);
56sense_reason_t spc_emulate_report_luns(struct se_cmd *cmd);
57sense_reason_t spc_emulate_inquiry_std(struct se_cmd *, unsigned char *);
58sense_reason_t spc_emulate_evpd_83(struct se_cmd *, unsigned char *);
59
60sense_reason_t sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops);
61u32 sbc_get_device_rev(struct se_device *dev);
62u32 sbc_get_device_type(struct se_device *dev);
63sector_t sbc_get_write_same_sectors(struct se_cmd *cmd);
64sense_reason_t sbc_execute_unmap(struct se_cmd *cmd,
65 sense_reason_t (*do_unmap_fn)(struct se_cmd *cmd, void *priv,
66 sector_t lba, sector_t nolb),
67 void *priv);
68
69void transport_set_vpd_proto_id(struct t10_vpd *, unsigned char *);
70int transport_set_vpd_assoc(struct t10_vpd *, unsigned char *);
71int transport_set_vpd_ident_type(struct t10_vpd *, unsigned char *);
72int transport_set_vpd_ident(struct t10_vpd *, unsigned char *);
73
74/* core helpers also used by command snooping in pscsi */
75void *transport_kmap_data_sg(struct se_cmd *);
76void transport_kunmap_data_sg(struct se_cmd *);
77/* core helpers also used by xcopy during internal command setup */
78int target_alloc_sgl(struct scatterlist **, unsigned int *, u32, bool);
79sense_reason_t transport_generic_map_mem_to_cmd(struct se_cmd *,
80 struct scatterlist *, u32, struct scatterlist *, u32);
81
82void array_free(void *array, int n);
83
84#endif /* TARGET_CORE_BACKEND_H */