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TOMOYO Linux Cross Reference
Linux/include/target/target_core_backend.h

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  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 int     target_alloc_sgl(struct scatterlist **, unsigned int *, u32, bool);
 89 sense_reason_t  transport_generic_map_mem_to_cmd(struct se_cmd *,
 90                 struct scatterlist *, u32, struct scatterlist *, u32);
 91 
 92 bool    target_lun_is_rdonly(struct se_cmd *);
 93 sense_reason_t passthrough_parse_cdb(struct se_cmd *cmd,
 94         sense_reason_t (*exec_cmd)(struct se_cmd *cmd));
 95 
 96 bool target_sense_desc_format(struct se_device *dev);
 97 
 98 #endif /* TARGET_CORE_BACKEND_H */
 99 

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