1 #ifndef TARGET_CORE_BACKEND_H 2 #define TARGET_CORE_BACKEND_H 3 4 #define TRANSPORT_FLAG_PASSTHROUGH 1 5 6 struct target_backend_ops { 7 char name[16]; 8 char inquiry_prod[16]; 9 char inquiry_rev[4]; 10 struct module *owner; 11 12 u8 transport_flags; 13 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); 17 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); 21 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 *); 25 26 void (*transport_complete)(struct se_cmd *cmd, 27 struct scatterlist *, 28 unsigned char *); 29 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 *); 43 44 struct configfs_attribute **tb_dev_attrib_attrs; 45 }; 46 47 struct sbc_ops { 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_unmap)(struct se_cmd *cmd, 53 sector_t lba, sector_t nolb); 54 }; 55 56 int transport_backend_register(const struct target_backend_ops *); 57 void target_backend_unregister(const struct target_backend_ops *); 58 59 void target_complete_cmd(struct se_cmd *, u8); 60 void target_complete_cmd_with_length(struct se_cmd *, u8, int); 61 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 *); 66 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 void sbc_dif_generate(struct se_cmd *); 72 sense_reason_t sbc_dif_verify(struct se_cmd *, sector_t, unsigned int, 73 unsigned int, struct scatterlist *, int); 74 void sbc_dif_copy_prot(struct se_cmd *, unsigned int, bool, 75 struct scatterlist *, int); 76 void transport_set_vpd_proto_id(struct t10_vpd *, unsigned char *); 77 int transport_set_vpd_assoc(struct t10_vpd *, unsigned char *); 78 int transport_set_vpd_ident_type(struct t10_vpd *, unsigned char *); 79 int transport_set_vpd_ident(struct t10_vpd *, unsigned char *); 80 81 extern struct configfs_attribute *sbc_attrib_attrs[]; 82 extern struct configfs_attribute *passthrough_attrib_attrs[]; 83 84 /* core helpers also used by command snooping in pscsi */ 85 void *transport_kmap_data_sg(struct se_cmd *); 86 void transport_kunmap_data_sg(struct se_cmd *); 87 /* core helpers also used by xcopy during internal command setup */ 88 sense_reason_t transport_generic_map_mem_to_cmd(struct se_cmd *, 89 struct scatterlist *, u32, struct scatterlist *, u32); 90 91 bool target_lun_is_rdonly(struct se_cmd *); 92 sense_reason_t passthrough_parse_cdb(struct se_cmd *cmd, 93 sense_reason_t (*exec_cmd)(struct se_cmd *cmd)); 94 95 bool target_sense_desc_format(struct se_device *dev); 96 sector_t target_to_linux_sector(struct se_device *dev, sector_t lb); 97 bool target_configure_unmap_from_queue(struct se_dev_attrib *attrib, 98 struct request_queue *q, int block_size); 99 100 #endif /* TARGET_CORE_BACKEND_H */ 101