drivers/misc/mic/common/mic_dev.h

   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  */
  18 enum 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  */
  32 struct 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