1 #ifndef TARGET_CORE_BACKEND_H
2 #define TARGET_CORE_BACKEND_H
4 #define TRANSPORT_FLAG_PASSTHROUGH 1
6 struct target_backend_ops {
14 int (*attach_hba)(struct se_hba *, u32);
15 void (*detach_hba)(struct se_hba *);
16 int (*pmode_enable_hba)(struct se_hba *, unsigned long);
18 struct se_device *(*alloc_device)(struct se_hba *, const char *);
19 int (*configure_device)(struct se_device *);
20 void (*free_device)(struct se_device *device);
22 ssize_t (*set_configfs_dev_params)(struct se_device *,
23 const char *, ssize_t);
24 ssize_t (*show_configfs_dev_params)(struct se_device *, char *);
26 void (*transport_complete)(struct se_cmd *cmd,
30 sense_reason_t (*parse_cdb)(struct se_cmd *cmd);
31 u32 (*get_device_type)(struct se_device *);
32 sector_t (*get_blocks)(struct se_device *);
33 sector_t (*get_alignment_offset_lbas)(struct se_device *);
34 /* lbppbe = logical blocks per physical block exponent. see SBC-3 */
35 unsigned int (*get_lbppbe)(struct se_device *);
36 unsigned int (*get_io_min)(struct se_device *);
37 unsigned int (*get_io_opt)(struct se_device *);
38 unsigned char *(*get_sense_buffer)(struct se_cmd *);
39 bool (*get_write_cache)(struct se_device *);
40 int (*init_prot)(struct se_device *);
41 int (*format_prot)(struct se_device *);
42 void (*free_prot)(struct se_device *);
44 struct configfs_attribute **tb_dev_attrib_attrs;
48 sense_reason_t (*execute_rw)(struct se_cmd *cmd, struct scatterlist *,
49 u32, enum dma_data_direction);
50 sense_reason_t (*execute_sync_cache)(struct se_cmd *cmd);
51 sense_reason_t (*execute_write_same)(struct se_cmd *cmd);
52 sense_reason_t (*execute_write_same_unmap)(struct se_cmd *cmd);
53 sense_reason_t (*execute_unmap)(struct se_cmd *cmd);
56 int transport_backend_register(const struct target_backend_ops *);
57 void target_backend_unregister(const struct target_backend_ops *);
59 void target_complete_cmd(struct se_cmd *, u8);
60 void target_complete_cmd_with_length(struct se_cmd *, u8, int);
62 sense_reason_t spc_parse_cdb(struct se_cmd *cmd, unsigned int *size);
63 sense_reason_t spc_emulate_report_luns(struct se_cmd *cmd);
64 sense_reason_t spc_emulate_inquiry_std(struct se_cmd *, unsigned char *);
65 sense_reason_t spc_emulate_evpd_83(struct se_cmd *, unsigned char *);
67 sense_reason_t sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops);
68 u32 sbc_get_device_rev(struct se_device *dev);
69 u32 sbc_get_device_type(struct se_device *dev);
70 sector_t sbc_get_write_same_sectors(struct se_cmd *cmd);
71 sense_reason_t sbc_execute_unmap(struct se_cmd *cmd,
72 sense_reason_t (*do_unmap_fn)(struct se_cmd *cmd, void *priv,
73 sector_t lba, sector_t nolb),
75 void sbc_dif_generate(struct se_cmd *);
76 sense_reason_t sbc_dif_verify(struct se_cmd *, sector_t, unsigned int,
77 unsigned int, struct scatterlist *, int);
78 void sbc_dif_copy_prot(struct se_cmd *, unsigned int, bool,
79 struct scatterlist *, int);
80 void transport_set_vpd_proto_id(struct t10_vpd *, unsigned char *);
81 int transport_set_vpd_assoc(struct t10_vpd *, unsigned char *);
82 int transport_set_vpd_ident_type(struct t10_vpd *, unsigned char *);
83 int transport_set_vpd_ident(struct t10_vpd *, unsigned char *);
85 extern struct configfs_attribute *sbc_attrib_attrs[];
86 extern struct configfs_attribute *passthrough_attrib_attrs[];
88 /* core helpers also used by command snooping in pscsi */
89 void *transport_kmap_data_sg(struct se_cmd *);
90 void transport_kunmap_data_sg(struct se_cmd *);
91 /* core helpers also used by xcopy during internal command setup */
92 int target_alloc_sgl(struct scatterlist **, unsigned int *, u32, bool);
93 sense_reason_t transport_generic_map_mem_to_cmd(struct se_cmd *,
94 struct scatterlist *, u32, struct scatterlist *, u32);
96 bool target_lun_is_rdonly(struct se_cmd *);
98 /* attribute helpers from target_core_device.c for backend drivers */
99 bool se_dev_check_wce(struct se_device *);
100 int se_dev_set_max_unmap_lba_count(struct se_device *, u32);
101 int se_dev_set_max_unmap_block_desc_count(struct se_device *, u32);
102 int se_dev_set_unmap_granularity(struct se_device *, u32);
103 int se_dev_set_unmap_granularity_alignment(struct se_device *, u32);
104 int se_dev_set_max_write_same_len(struct se_device *, u32);
105 int se_dev_set_emulate_model_alias(struct se_device *, int);
106 int se_dev_set_emulate_dpo(struct se_device *, int);
107 int se_dev_set_emulate_fua_write(struct se_device *, int);
108 int se_dev_set_emulate_fua_read(struct se_device *, int);
109 int se_dev_set_emulate_write_cache(struct se_device *, int);
110 int se_dev_set_emulate_ua_intlck_ctrl(struct se_device *, int);
111 int se_dev_set_emulate_tas(struct se_device *, int);
112 int se_dev_set_emulate_tpu(struct se_device *, int);
113 int se_dev_set_emulate_tpws(struct se_device *, int);
114 int se_dev_set_emulate_caw(struct se_device *, int);
115 int se_dev_set_emulate_3pc(struct se_device *, int);
116 int se_dev_set_pi_prot_type(struct se_device *, int);
117 int se_dev_set_pi_prot_format(struct se_device *, int);
118 int se_dev_set_enforce_pr_isids(struct se_device *, int);
119 int se_dev_set_force_pr_aptpl(struct se_device *, int);
120 int se_dev_set_is_nonrot(struct se_device *, int);
121 int se_dev_set_emulate_rest_reord(struct se_device *dev, int);
122 int se_dev_set_queue_depth(struct se_device *, u32);
123 int se_dev_set_max_sectors(struct se_device *, u32);
124 int se_dev_set_optimal_sectors(struct se_device *, u32);
125 int se_dev_set_block_size(struct se_device *, u32);
126 sense_reason_t passthrough_parse_cdb(struct se_cmd *cmd,
127 sense_reason_t (*exec_cmd)(struct se_cmd *cmd));
129 #endif /* TARGET_CORE_BACKEND_H */