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 /* Maximum queuedepth for the FILEIO HBA */
   8 #define FD_HBA_QUEUE_DEPTH      256
   9 #define FD_DEVICE_QUEUE_DEPTH   32
  10 #define FD_MAX_DEVICE_QUEUE_DEPTH 128
  11 #define FD_BLOCKSIZE            512
  12 #define FD_MAX_SECTORS          1024
  13
  14 #define RRF_EMULATE_CDB         0x01
  15 #define RRF_GOT_LBA             0x02
  16
  17 struct fd_request {
  18         struct se_task  fd_task;
  19         /* SCSI CDB from iSCSI Command PDU */
  20         unsigned char   fd_scsi_cdb[TCM_MAX_COMMAND_SIZE];
  21         /* FILEIO device */
  22         struct fd_dev   *fd_dev;
  23 } ____cacheline_aligned;
  24
  25 #define FBDF_HAS_PATH           0x01
  26 #define FBDF_HAS_SIZE           0x02
  27 #define FDBD_USE_BUFFERED_IO    0x04
  28
  29 struct fd_dev {
  30         u32             fbd_flags;
  31         unsigned char   fd_dev_name[FD_MAX_DEV_NAME];
  32         /* Unique Ramdisk Device ID in Ramdisk HBA */
  33         u32             fd_dev_id;
  34         /* Number of SG tables in sg_table_array */
  35         u32             fd_table_count;
  36         u32             fd_queue_depth;
  37         u32             fd_block_size;
  38         unsigned long long fd_dev_size;
  39         struct file     *fd_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 */