LXR linux/include/uapi/linux/mic

   1/*
   2 * Intel MIC Platform Software Stack (MPSS)
   3 *
   4 * Copyright(c) 2013 Intel Corporation.
   5 *
   6 * This program is free software; you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License, version 2, as
   8 * published by the Free Software Foundation.
   9 *
  10 * This program is distributed in the hope that it will be useful, but
  11 * WITHOUT ANY WARRANTY; without even the implied warranty of
  12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  13 * General Public License for more details.
  14 *
  15 * The full GNU General Public License is included in this distribution in
  16 * the file called "COPYING".
  17 *
  18 * Intel MIC Host driver.
  19 *
  20 */
  21#ifndef _MIC_IOCTL_H_
  22#define _MIC_IOCTL_H_
  23
  24#include <linux/types.h>
  25
  26/*
  27 * mic_copy - MIC virtio descriptor copy.
  28 *
  29 * @iov: An array of IOVEC structures containing user space buffers.
  30 * @iovcnt: Number of IOVEC structures in iov.
  31 * @vr_idx: The vring index.
  32 * @update_used: A non zero value results in used index being updated.
  33 * @out_len: The aggregate of the total length written to or read from
  34 *      the virtio device.
  35 */
  36struct mic_copy_desc {
  37#ifdef __KERNEL__
  38        struct iovec __user *iov;
  39#else
  40        struct iovec *iov;
  41#endif
  42        __u32 iovcnt;
  43        __u8 vr_idx;
  44        __u8 update_used;
  45        __u32 out_len;
  46};
  47
  48/*
  49 * Add a new virtio device
  50 * The (struct mic_device_desc *) pointer points to a device page entry
  51 *      for the virtio device consisting of:
  52 *      - struct mic_device_desc
  53 *      - struct mic_vqconfig (num_vq of these)
  54 *      - host and guest features
  55 *      - virtio device config space
  56 * The total size referenced by the pointer should equal the size returned
  57 * by desc_size() in mic_common.h
  58 */
  59#define MIC_VIRTIO_ADD_DEVICE _IOWR('s', 1, struct mic_device_desc *)
  60
  61/*
  62 * Copy the number of entries in the iovec and update the used index
  63 * if requested by the user.
  64 */
  65#define MIC_VIRTIO_COPY_DESC    _IOWR('s', 2, struct mic_copy_desc *)
  66
  67/*
  68 * Notify virtio device of a config change
  69 * The (__u8 *) pointer points to config space values for the device
  70 * as they should be written into the device page. The total size
  71 * referenced by the pointer should equal the config_len field of struct
  72 * mic_device_desc.
  73 */
  74#define MIC_VIRTIO_CONFIG_CHANGE _IOWR('s', 5, __u8 *)
  75
  76#endif
  77