diff options
Diffstat (limited to 'include/target/target_core_backend.h')
| -rw-r--r-- | include/target/target_core_backend.h | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/include/target/target_core_backend.h b/include/target/target_core_backend.h new file mode 100644 index 000000000..5f1225706 --- /dev/null +++ b/include/target/target_core_backend.h @@ -0,0 +1,142 @@ +#ifndef TARGET_CORE_BACKEND_H +#define TARGET_CORE_BACKEND_H + +#define TRANSPORT_FLAG_PASSTHROUGH 1 + +struct target_backend_cits { + struct config_item_type tb_dev_cit; + struct config_item_type tb_dev_attrib_cit; + struct config_item_type tb_dev_pr_cit; + struct config_item_type tb_dev_wwn_cit; + struct config_item_type tb_dev_alua_tg_pt_gps_cit; + struct config_item_type tb_dev_stat_cit; +}; + +struct se_subsystem_api { + struct list_head sub_api_list; + + char name[16]; + char inquiry_prod[16]; + char inquiry_rev[4]; + struct module *owner; + + u8 transport_flags; + + int (*attach_hba)(struct se_hba *, u32); + void (*detach_hba)(struct se_hba *); + int (*pmode_enable_hba)(struct se_hba *, unsigned long); + + struct se_device *(*alloc_device)(struct se_hba *, const char *); + int (*configure_device)(struct se_device *); + void (*free_device)(struct se_device *device); + + ssize_t (*set_configfs_dev_params)(struct se_device *, + const char *, ssize_t); + ssize_t (*show_configfs_dev_params)(struct se_device *, char *); + + void (*transport_complete)(struct se_cmd *cmd, + struct scatterlist *, + unsigned char *); + + sense_reason_t (*parse_cdb)(struct se_cmd *cmd); + u32 (*get_device_type)(struct se_device *); + sector_t (*get_blocks)(struct se_device *); + sector_t (*get_alignment_offset_lbas)(struct se_device *); + /* lbppbe = logical blocks per physical block exponent. see SBC-3 */ + unsigned int (*get_lbppbe)(struct se_device *); + unsigned int (*get_io_min)(struct se_device *); + unsigned int (*get_io_opt)(struct se_device *); + unsigned char *(*get_sense_buffer)(struct se_cmd *); + bool (*get_write_cache)(struct se_device *); + int (*init_prot)(struct se_device *); + int (*format_prot)(struct se_device *); + void (*free_prot)(struct se_device *); + + struct target_backend_cits tb_cits; +}; + +struct sbc_ops { + sense_reason_t (*execute_rw)(struct se_cmd *cmd, struct scatterlist *, + u32, enum dma_data_direction); + sense_reason_t (*execute_sync_cache)(struct se_cmd *cmd); + sense_reason_t (*execute_write_same)(struct se_cmd *cmd); + sense_reason_t (*execute_write_same_unmap)(struct se_cmd *cmd); + sense_reason_t (*execute_unmap)(struct se_cmd *cmd); +}; + +int transport_subsystem_register(struct se_subsystem_api *); +void transport_subsystem_release(struct se_subsystem_api *); + +void target_complete_cmd(struct se_cmd *, u8); +void target_complete_cmd_with_length(struct se_cmd *, u8, int); + +sense_reason_t spc_parse_cdb(struct se_cmd *cmd, unsigned int *size); +sense_reason_t spc_emulate_report_luns(struct se_cmd *cmd); +sense_reason_t spc_emulate_inquiry_std(struct se_cmd *, unsigned char *); +sense_reason_t spc_emulate_evpd_83(struct se_cmd *, unsigned char *); + +sense_reason_t sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops); +u32 sbc_get_device_rev(struct se_device *dev); +u32 sbc_get_device_type(struct se_device *dev); +sector_t sbc_get_write_same_sectors(struct se_cmd *cmd); +sense_reason_t sbc_execute_unmap(struct se_cmd *cmd, + sense_reason_t (*do_unmap_fn)(struct se_cmd *cmd, void *priv, + sector_t lba, sector_t nolb), + void *priv); +void sbc_dif_generate(struct se_cmd *); +sense_reason_t sbc_dif_verify_write(struct se_cmd *, sector_t, unsigned int, + unsigned int, struct scatterlist *, int); +sense_reason_t sbc_dif_verify_read(struct se_cmd *, sector_t, unsigned int, + unsigned int, struct scatterlist *, int); +sense_reason_t sbc_dif_read_strip(struct se_cmd *); + +void transport_set_vpd_proto_id(struct t10_vpd *, unsigned char *); +int transport_set_vpd_assoc(struct t10_vpd *, unsigned char *); +int transport_set_vpd_ident_type(struct t10_vpd *, unsigned char *); +int transport_set_vpd_ident(struct t10_vpd *, unsigned char *); + +/* core helpers also used by command snooping in pscsi */ +void *transport_kmap_data_sg(struct se_cmd *); +void transport_kunmap_data_sg(struct se_cmd *); +/* core helpers also used by xcopy during internal command setup */ +int target_alloc_sgl(struct scatterlist **, unsigned int *, u32, bool); +sense_reason_t transport_generic_map_mem_to_cmd(struct se_cmd *, + struct scatterlist *, u32, struct scatterlist *, u32); + +void array_free(void *array, int n); + +/* From target_core_configfs.c to setup default backend config_item_types */ +void target_core_setup_sub_cits(struct se_subsystem_api *); + +/* attribute helpers from target_core_device.c for backend drivers */ +bool se_dev_check_wce(struct se_device *); +int se_dev_set_max_unmap_lba_count(struct se_device *, u32); +int se_dev_set_max_unmap_block_desc_count(struct se_device *, u32); +int se_dev_set_unmap_granularity(struct se_device *, u32); +int se_dev_set_unmap_granularity_alignment(struct se_device *, u32); +int se_dev_set_max_write_same_len(struct se_device *, u32); +int se_dev_set_emulate_model_alias(struct se_device *, int); +int se_dev_set_emulate_dpo(struct se_device *, int); +int se_dev_set_emulate_fua_write(struct se_device *, int); +int se_dev_set_emulate_fua_read(struct se_device *, int); +int se_dev_set_emulate_write_cache(struct se_device *, int); +int se_dev_set_emulate_ua_intlck_ctrl(struct se_device *, int); +int se_dev_set_emulate_tas(struct se_device *, int); +int se_dev_set_emulate_tpu(struct se_device *, int); +int se_dev_set_emulate_tpws(struct se_device *, int); +int se_dev_set_emulate_caw(struct se_device *, int); +int se_dev_set_emulate_3pc(struct se_device *, int); +int se_dev_set_pi_prot_type(struct se_device *, int); +int se_dev_set_pi_prot_format(struct se_device *, int); +int se_dev_set_enforce_pr_isids(struct se_device *, int); +int se_dev_set_force_pr_aptpl(struct se_device *, int); +int se_dev_set_is_nonrot(struct se_device *, int); +int se_dev_set_emulate_rest_reord(struct se_device *dev, int); +int se_dev_set_queue_depth(struct se_device *, u32); +int se_dev_set_max_sectors(struct se_device *, u32); +int se_dev_set_optimal_sectors(struct se_device *, u32); +int se_dev_set_block_size(struct se_device *, u32); +sense_reason_t passthrough_parse_cdb(struct se_cmd *cmd, + sense_reason_t (*exec_cmd)(struct se_cmd *cmd)); + +#endif /* TARGET_CORE_BACKEND_H */ |