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_MAX_DEV_PROT_NAME    FD_MAX_DEV_NAME + 16
   8 #define FD_DEVICE_QUEUE_DEPTH   32
   9 #define FD_MAX_DEVICE_QUEUE_DEPTH 128
  10 #define FD_BLOCKSIZE            512
  11 /*
  12  * Limited by the number of iovecs (2048) per vfs_[writev,readv] call
  13  */
  14 #define FD_MAX_BYTES            8388608
  15
  16 #define RRF_EMULATE_CDB         0x01
  17 #define RRF_GOT_LBA             0x02
  18
  19 #define FBDF_HAS_PATH           0x01
  20 #define FBDF_HAS_SIZE           0x02
  21 #define FDBD_HAS_BUFFERED_IO_WCE 0x04
  22 #define FDBD_FORMAT_UNIT_SIZE   2048
  23
  24 struct fd_prot {
  25         unsigned char   *prot_buf;
  26         struct scatterlist *prot_sg;
  27         u32 prot_sg_nents;
  28 };
  29
  30 struct fd_dev {
  31         struct se_device dev;
  32
  33         u32             fbd_flags;
  34         unsigned char   fd_dev_name[FD_MAX_DEV_NAME];
  35         /* Unique Ramdisk Device ID in Ramdisk HBA */
  36         u32             fd_dev_id;
  37         /* Number of SG tables in sg_table_array */
  38         u32             fd_table_count;
  39         u32             fd_queue_depth;
  40         u32             fd_block_size;
  41         unsigned long long fd_dev_size;
  42         struct file     *fd_file;
  43         struct file     *fd_prot_file;
  44         /* FILEIO HBA device is connected to */
  45         struct fd_host *fd_host;
  46 } ____cacheline_aligned;
  47
  48 struct fd_host {
  49         u32             fd_host_dev_id_count;
  50         /* Unique FILEIO Host ID */
  51         u32             fd_host_id;
  52 } ____cacheline_aligned;
  53
  54 #endif /* TARGET_CORE_FILE_H */