drivers/target/target_core_file.h

   1 #ifndef TARGET_CORE_FILE_H
   2 #define TARGET_CORE_FILE_H
   3
   4 #define FD_VERSION              "4.0"
   5
   6 #define FD_MAX_DEV_NAME         256
   7 #define FD_DEVICE_QUEUE_DEPTH   32
   8 #define FD_MAX_DEVICE_QUEUE_DEPTH 128
   9 #define FD_BLOCKSIZE            512
  10 /*
  11  * Limited by the number of iovecs (2048) per vfs_[writev,readv] call
  12  */
  13 #define FD_MAX_BYTES            8388608
  14
  15 #define RRF_EMULATE_CDB         0x01
  16 #define RRF_GOT_LBA             0x02
  17
  18 #define FBDF_HAS_PATH           0x01
  19 #define FBDF_HAS_SIZE           0x02
  20 #define FDBD_HAS_BUFFERED_IO_WCE 0x04
  21
  22 struct fd_dev {
  23         struct se_device dev;
  24
  25         u32             fbd_flags;
  26         unsigned char   fd_dev_name[FD_MAX_DEV_NAME];
  27         /* Unique Ramdisk Device ID in Ramdisk HBA */
  28         u32             fd_dev_id;
  29         /* Number of SG tables in sg_table_array */
  30         u32             fd_table_count;
  31         u32             fd_queue_depth;
  32         u32             fd_block_size;
  33         unsigned long long fd_dev_size;
  34         struct file     *fd_file;
  35         /* FILEIO HBA device is connected to */
  36         struct fd_host *fd_host;
  37 } ____cacheline_aligned;
  38
  39 struct fd_host {
  40         u32             fd_host_dev_id_count;
  41         /* Unique FILEIO Host ID */
  42         u32             fd_host_id;
  43 } ____cacheline_aligned;
  44
  45 #endif /* TARGET_CORE_FILE_H */