include/target/target_core_backend.h

   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         struct module *owner;
  13
  14         u8 transport_type;
  15
  16         unsigned int fua_write_emulated : 1;
  17         unsigned int write_cache_emulated : 1;
  18
  19         int (*attach_hba)(struct se_hba *, u32);
  20         void (*detach_hba)(struct se_hba *);
  21         int (*pmode_enable_hba)(struct se_hba *, unsigned long);
  22         void *(*allocate_virtdevice)(struct se_hba *, const char *);
  23         struct se_device *(*create_virtdevice)(struct se_hba *,
  24                                 struct se_subsystem_dev *, void *);
  25         void (*free_device)(void *);
  26         int (*transport_complete)(struct se_cmd *cmd, struct scatterlist *);
  27
  28         int (*parse_cdb)(struct se_cmd *cmd);
  29         ssize_t (*check_configfs_dev_params)(struct se_hba *,
  30                         struct se_subsystem_dev *);
  31         ssize_t (*set_configfs_dev_params)(struct se_hba *,
  32                         struct se_subsystem_dev *, const char *, ssize_t);
  33         ssize_t (*show_configfs_dev_params)(struct se_hba *,
  34                         struct se_subsystem_dev *, char *);
  35         u32 (*get_device_rev)(struct se_device *);
  36         u32 (*get_device_type)(struct se_device *);
  37         sector_t (*get_blocks)(struct se_device *);
  38         unsigned char *(*get_sense_buffer)(struct se_cmd *);
  39 };
  40
  41 struct spc_ops {
  42         int (*execute_rw)(struct se_cmd *cmd);
  43         int (*execute_sync_cache)(struct se_cmd *cmd);
  44         int (*execute_write_same)(struct se_cmd *cmd);
  45         int (*execute_unmap)(struct se_cmd *cmd);
  46 };
  47
  48 int     transport_subsystem_register(struct se_subsystem_api *);
  49 void    transport_subsystem_release(struct se_subsystem_api *);
  50
  51 struct se_device *transport_add_device_to_core_hba(struct se_hba *,
  52                 struct se_subsystem_api *, struct se_subsystem_dev *, u32,
  53                 void *, struct se_dev_limits *, const char *, const char *);
  54
  55 void    target_complete_cmd(struct se_cmd *, u8);
  56
  57 int     sbc_parse_cdb(struct se_cmd *cmd, struct spc_ops *ops);
  58 int     spc_parse_cdb(struct se_cmd *cmd, unsigned int *size);
  59 int     spc_get_write_same_sectors(struct se_cmd *cmd);
  60
  61 void    transport_set_vpd_proto_id(struct t10_vpd *, unsigned char *);
  62 int     transport_set_vpd_assoc(struct t10_vpd *, unsigned char *);
  63 int     transport_set_vpd_ident_type(struct t10_vpd *, unsigned char *);
  64 int     transport_set_vpd_ident(struct t10_vpd *, unsigned char *);
  65
  66 /* core helpers also used by command snooping in pscsi */
  67 void    *transport_kmap_data_sg(struct se_cmd *);
  68 void    transport_kunmap_data_sg(struct se_cmd *);
  69
  70 void    array_free(void *array, int n);
  71
  72 #endif /* TARGET_CORE_BACKEND_H */