| | 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); |
| | 99 | |
| | 100 | #endif /* TARGET_CORE_BACKEND_H */ |
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