LXR linux/drivers/misc/mic/common/mic

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 * Intel MIC Platform Software Stack (MPSS)
   4 *
   5 * Copyright(c) 2013 Intel Corporation.
   6 *
   7 * Intel MIC driver.
   8 */
   9#ifndef __MIC_DEV_H__
  10#define __MIC_DEV_H__
  11
  12/* The maximum number of MIC devices supported in a single host system. */
  13#define MIC_MAX_NUM_DEVS 128
  14
  15/**
  16 * enum mic_hw_family - The hardware family to which a device belongs.
  17 */
  18enum mic_hw_family {
  19        MIC_FAMILY_X100 = 0,
  20        MIC_FAMILY_X200,
  21        MIC_FAMILY_UNKNOWN,
  22        MIC_FAMILY_LAST
  23};
  24
  25/**
  26 * struct mic_mw - MIC memory window
  27 *
  28 * @pa: Base physical address.
  29 * @va: Base ioremap'd virtual address.
  30 * @len: Size of the memory window.
  31 */
  32struct mic_mw {
  33        phys_addr_t pa;
  34        void __iomem *va;
  35        resource_size_t len;
  36};
  37
  38/*
  39 * Scratch pad register offsets used by the host to communicate
  40 * device page DMA address to the card.
  41 */
  42#define MIC_DPLO_SPAD 14
  43#define MIC_DPHI_SPAD 15
  44
  45/*
  46 * These values are supposed to be in the config_change field of the
  47 * device page when the host sends a config change interrupt to the card.
  48 */
  49#define MIC_VIRTIO_PARAM_DEV_REMOVE 0x1
  50#define MIC_VIRTIO_PARAM_CONFIG_CHANGED 0x2
  51
  52/* Maximum number of DMA channels */
  53#define MIC_MAX_DMA_CHAN 4
  54
  55#endif
  56