drivers/misc/mic/card/mic_virtio.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  * Disclaimer: The codes contained in these modules may be specific to
  19  * the Intel Software Development Platform codenamed: Knights Ferry, and
  20  * the Intel product codenamed: Knights Corner, and are not backward
  21  * compatible with other Intel products. Additionally, Intel will NOT
  22  * support the codes or instruction set in future products.
  23  *
  24  * Intel MIC Card driver.
  25  *
  26  */
  27 #ifndef __MIC_CARD_VIRTIO_H
  28 #define __MIC_CARD_VIRTIO_H
  29
  30 #include <linux/mic_common.h>
  31 #include "mic_device.h"
  32
  33 /*
  34  * 64 bit I/O access
  35  */
  36 #ifndef ioread64
  37 #define ioread64 readq
  38 #endif
  39 #ifndef iowrite64
  40 #define iowrite64 writeq
  41 #endif
  42
  43 static inline unsigned mic_desc_size(struct mic_device_desc __iomem *desc)
  44 {
  45         return sizeof(*desc)
  46                 + ioread8(&desc->num_vq) * sizeof(struct mic_vqconfig)
  47                 + ioread8(&desc->feature_len) * 2
  48                 + ioread8(&desc->config_len);
  49 }
  50
  51 static inline struct mic_vqconfig __iomem *
  52 mic_vq_config(struct mic_device_desc __iomem *desc)
  53 {
  54         return (struct mic_vqconfig __iomem *)(desc + 1);
  55 }
  56
  57 static inline __u8 __iomem *
  58 mic_vq_features(struct mic_device_desc __iomem *desc)
  59 {
  60         return (__u8 __iomem *)(mic_vq_config(desc) + ioread8(&desc->num_vq));
  61 }
  62
  63 static inline __u8 __iomem *
  64 mic_vq_configspace(struct mic_device_desc __iomem *desc)
  65 {
  66         return mic_vq_features(desc) + ioread8(&desc->feature_len) * 2;
  67 }
  68 static inline unsigned mic_total_desc_size(struct mic_device_desc __iomem *desc)
  69 {
  70         return mic_aligned_desc_size(desc) + sizeof(struct mic_device_ctrl);
  71 }
  72
  73 int mic_devices_init(struct mic_driver *mdrv);
  74 void mic_devices_uninit(struct mic_driver *mdrv);
  75
  76 #endif