drivers/misc/mic/common/mic_dev.h

   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 driver.
  19  *
  20  */
  21 #ifndef __MIC_DEV_H__
  22 #define __MIC_DEV_H__
  23
  24 /* The maximum number of MIC devices supported in a single host system. */
  25 #define MIC_MAX_NUM_DEVS 128
  26
  27 /**
  28  * enum mic_hw_family - The hardware family to which a device belongs.
  29  */
  30 enum mic_hw_family {
  31         MIC_FAMILY_X100 = 0,
  32         MIC_FAMILY_X200,
  33         MIC_FAMILY_UNKNOWN,
  34         MIC_FAMILY_LAST
  35 };
  36
  37 /**
  38  * struct mic_mw - MIC memory window
  39  *
  40  * @pa: Base physical address.
  41  * @va: Base ioremap'd virtual address.
  42  * @len: Size of the memory window.
  43  */
  44 struct mic_mw {
  45         phys_addr_t pa;
  46         void __iomem *va;
  47         resource_size_t len;
  48 };
  49
  50 /*
  51  * Scratch pad register offsets used by the host to communicate
  52  * device page DMA address to the card.
  53  */
  54 #define MIC_DPLO_SPAD 14
  55 #define MIC_DPHI_SPAD 15
  56
  57 /*
  58  * These values are supposed to be in the config_change field of the
  59  * device page when the host sends a config change interrupt to the card.
  60  */
  61 #define MIC_VIRTIO_PARAM_DEV_REMOVE 0x1
  62 #define MIC_VIRTIO_PARAM_CONFIG_CHANGED 0x2
  63
  64 /* Maximum number of DMA channels */
  65 #define MIC_MAX_DMA_CHAN 4
  66
  67 #endif