cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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vgem_drv.h (2003B)

      1/*
      2 * Copyright © 2012 Intel Corporation
      3 * Copyright © 2014 The Chromium OS Authors
      4 *
      5 * Permission is hereby granted, free of charge, to any person obtaining a
      6 * copy of this software and associated documentation files (the "Software"),
      7 * to deal in the Software without restriction, including without limitation
      8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
      9 * and/or sell copies of the Software, and to permit persons to whom the
     10 * Software is furnished to do so, subject to the following conditions:
     11 *
     12 * The above copyright notice and this permission notice (including the next
     13 * paragraph) shall be included in all copies or substantial portions of the
     14 * Software.
     15 *
     16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
     21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
     22 * IN THE SOFTWARE.
     23 *
     24 * Authors:
     25 *    Ben Widawsky <ben@bwidawsk.net>
     26 *
     27 */
     28
     29#ifndef _VGEM_DRV_H_
     30#define _VGEM_DRV_H_
     31
     32#include <drm/drm_gem.h>
     33#include <drm/drm_cache.h>
     34
     35#include <uapi/drm/vgem_drm.h>
     36
     37struct vgem_file {
     38	struct idr fence_idr;
     39	struct mutex fence_mutex;
     40};
     41
     42#define to_vgem_bo(x) container_of(x, struct drm_vgem_gem_object, base)
     43struct drm_vgem_gem_object {
     44	struct drm_gem_object base;
     45
     46	struct page **pages;
     47	unsigned int pages_pin_count;
     48	struct mutex pages_lock;
     49
     50	struct sg_table *table;
     51};
     52
     53int vgem_fence_open(struct vgem_file *file);
     54int vgem_fence_attach_ioctl(struct drm_device *dev,
     55			    void *data,
     56			    struct drm_file *file);
     57int vgem_fence_signal_ioctl(struct drm_device *dev,
     58			    void *data,
     59			    struct drm_file *file);
     60void vgem_fence_close(struct vgem_file *file);
     61
     62#endif