drivers/target/target_core_file.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef TARGET_CORE_FILE_H
   3 #define TARGET_CORE_FILE_H
   4
   5 #include <target/target_core_base.h>
   6
   7 #define FD_VERSION              "4.0"
   8
   9 #define FD_MAX_DEV_NAME         256
  10 #define FD_MAX_DEV_PROT_NAME    FD_MAX_DEV_NAME + 16
  11 #define FD_DEVICE_QUEUE_DEPTH   32
  12 #define FD_MAX_DEVICE_QUEUE_DEPTH 128
  13 #define FD_BLOCKSIZE            512
  14 /*
  15  * Limited by the number of iovecs (2048) per vfs_[writev,readv] call
  16  */
  17 #define FD_MAX_BYTES            8388608
  18
  19 #define RRF_EMULATE_CDB         0x01
  20 #define RRF_GOT_LBA             0x02
  21
  22 #define FBDF_HAS_PATH           0x01
  23 #define FBDF_HAS_SIZE           0x02
  24 #define FDBD_HAS_BUFFERED_IO_WCE 0x04
  25 #define FDBD_HAS_ASYNC_IO        0x08
  26 #define FDBD_FORMAT_UNIT_SIZE   2048
  27
  28 struct fd_dev {
  29         struct se_device dev;
  30
  31         u32             fbd_flags;
  32         unsigned char   fd_dev_name[FD_MAX_DEV_NAME];
  33         /* Unique Ramdisk Device ID in Ramdisk HBA */
  34         u32             fd_dev_id;
  35         /* Number of SG tables in sg_table_array */
  36         u32             fd_table_count;
  37         u32             fd_queue_depth;
  38         u32             fd_block_size;
  39         unsigned long long fd_dev_size;
  40         struct file     *fd_file;
  41         struct file     *fd_prot_file;
  42         /* FILEIO HBA device is connected to */
  43         struct fd_host *fd_host;
  44 } ____cacheline_aligned;
  45
  46 struct fd_host {
  47         u32             fd_host_dev_id_count;
  48         /* Unique FILEIO Host ID */
  49         u32             fd_host_id;
  50 } ____cacheline_aligned;
  51
  52 #endif /* TARGET_CORE_FILE_H */