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 8 struct 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 sector_t (*get_alignment_offset_lbas)(struct se_device *); 38 /* lbppbe = logical blocks per physical block exponent. see SBC-3 */ 39 unsigned int (*get_lbppbe)(struct se_device *); 40 unsigned int (*get_io_min)(struct se_device *); 41 unsigned int (*get_io_opt)(struct se_device *); 42 unsigned char *(*get_sense_buffer)(struct se_cmd *); 43 bool (*get_write_cache)(struct se_device *); 44 }; 45 46 struct sbc_ops { 47 sense_reason_t (*execute_rw)(struct se_cmd *cmd, struct scatterlist *, 48 u32, enum dma_data_direction); 49 sense_reason_t (*execute_sync_cache)(struct se_cmd *cmd); 50 sense_reason_t (*execute_write_same)(struct se_cmd *cmd); 51 sense_reason_t (*execute_write_same_unmap)(struct se_cmd *cmd); 52 sense_reason_t (*execute_unmap)(struct se_cmd *cmd); 53 }; 54 55 int transport_subsystem_register(struct se_subsystem_api *); 56 void transport_subsystem_release(struct se_subsystem_api *); 57 58 void target_complete_cmd(struct se_cmd *, u8); 59 60 sense_reason_t spc_parse_cdb(struct se_cmd *cmd, unsigned int *size); 61 sense_reason_t spc_emulate_report_luns(struct se_cmd *cmd); 62 sense_reason_t spc_emulate_inquiry_std(struct se_cmd *, unsigned char *); 63 sense_reason_t spc_emulate_evpd_83(struct se_cmd *, unsigned char *); 64 65 sense_reason_t sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops); 66 u32 sbc_get_device_rev(struct se_device *dev); 67 u32 sbc_get_device_type(struct se_device *dev); 68 sector_t sbc_get_write_same_sectors(struct se_cmd *cmd); 69 sense_reason_t sbc_execute_unmap(struct se_cmd *cmd, 70 sense_reason_t (*do_unmap_fn)(struct se_cmd *cmd, void *priv, 71 sector_t lba, sector_t nolb), 72 void *priv); 73 74 void transport_set_vpd_proto_id(struct t10_vpd *, unsigned char *); 75 int transport_set_vpd_assoc(struct t10_vpd *, unsigned char *); 76 int transport_set_vpd_ident_type(struct t10_vpd *, unsigned char *); 77 int transport_set_vpd_ident(struct t10_vpd *, unsigned char *); 78 79 /* core helpers also used by command snooping in pscsi */ 80 void *transport_kmap_data_sg(struct se_cmd *); 81 void transport_kunmap_data_sg(struct se_cmd *); 82 /* core helpers also used by xcopy during internal command setup */ 83 int target_alloc_sgl(struct scatterlist **, unsigned int *, u32, bool); 84 sense_reason_t transport_generic_map_mem_to_cmd(struct se_cmd *, 85 struct scatterlist *, u32, struct scatterlist *, u32); 86 87 void array_free(void *array, int n); 88 89 #endif /* TARGET_CORE_BACKEND_H */ 90