LXR linux/drivers/target/target_core

   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
  28struct 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
  46struct 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 */
  53