drivers/target/target_core_file.h

   1 #ifndef TARGET_CORE_FILE_H
   2 #define TARGET_CORE_FILE_H
   3
   4 #include <target/target_core_base.h>
   5
   6 #define FD_VERSION              "4.0"
   7
   8 #define FD_MAX_DEV_NAME         256
   9 #define FD_MAX_DEV_PROT_NAME    FD_MAX_DEV_NAME + 16
  10 #define FD_DEVICE_QUEUE_DEPTH   32
  11 #define FD_MAX_DEVICE_QUEUE_DEPTH 128
  12 #define FD_BLOCKSIZE            512
  13 /*
  14  * Limited by the number of iovecs (2048) per vfs_[writev,readv] call
  15  */
  16 #define FD_MAX_BYTES            8388608
  17
  18 #define RRF_EMULATE_CDB         0x01
  19 #define RRF_GOT_LBA             0x02
  20
  21 #define FBDF_HAS_PATH           0x01
  22 #define FBDF_HAS_SIZE           0x02
  23 #define FDBD_HAS_BUFFERED_IO_WCE 0x04
  24 #define FDBD_FORMAT_UNIT_SIZE   2048
  25
  26 struct fd_dev {
  27         struct se_device dev;
  28
  29         u32             fbd_flags;
  30         unsigned char   fd_dev_name[FD_MAX_DEV_NAME];
  31         /* Unique Ramdisk Device ID in Ramdisk HBA */
  32         u32             fd_dev_id;
  33         /* Number of SG tables in sg_table_array */
  34         u32             fd_table_count;
  35         u32             fd_queue_depth;
  36         u32             fd_block_size;
  37         unsigned long long fd_dev_size;
  38         struct file     *fd_file;
  39         struct file     *fd_prot_file;
  40         /* FILEIO HBA device is connected to */
  41         struct fd_host *fd_host;
  42 } ____cacheline_aligned;
  43
  44 struct fd_host {
  45         u32             fd_host_dev_id_count;
  46         /* Unique FILEIO Host ID */
  47         u32             fd_host_id;
  48 } ____cacheline_aligned;
  49
  50 #endif /* TARGET_CORE_FILE_H */