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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drm_sarea.h (2808B)

      1/**
      2 * \file drm_sarea.h
      3 * \brief SAREA definitions
      4 *
      5 * \author Michel Dänzer <michel@daenzer.net>
      6 */
      7
      8/*
      9 * Copyright 2002 Tungsten Graphics, Inc., Cedar Park, Texas.
     10 * All Rights Reserved.
     11 *
     12 * Permission is hereby granted, free of charge, to any person obtaining a
     13 * copy of this software and associated documentation files (the "Software"),
     14 * to deal in the Software without restriction, including without limitation
     15 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     16 * and/or sell copies of the Software, and to permit persons to whom the
     17 * Software is furnished to do so, subject to the following conditions:
     18 *
     19 * The above copyright notice and this permission notice (including the next
     20 * paragraph) shall be included in all copies or substantial portions of the
     21 * Software.
     22 *
     23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     24 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     25 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     26 * TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
     27 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     28 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     29 * OTHER DEALINGS IN THE SOFTWARE.
     30 */
     31
     32#ifndef _DRM_SAREA_H_
     33#define _DRM_SAREA_H_
     34
     35#include "drm.h"
     36
     37#if defined(__cplusplus)
     38extern "C" {
     39#endif
     40
     41/* SAREA area needs to be at least a page */
     42#if defined(__alpha__)
     43#define SAREA_MAX                       0x2000U
     44#elif defined(__mips__)
     45#define SAREA_MAX                       0x4000U
     46#elif defined(__ia64__)
     47#define SAREA_MAX                       0x10000U	/* 64kB */
     48#else
     49/* Intel 830M driver needs at least 8k SAREA */
     50#define SAREA_MAX                       0x2000U
     51#endif
     52
     53/** Maximum number of drawables in the SAREA */
     54#define SAREA_MAX_DRAWABLES		256
     55
     56#define SAREA_DRAWABLE_CLAIMED_ENTRY    0x80000000
     57
     58/** SAREA drawable */
     59struct drm_sarea_drawable {
     60	unsigned int stamp;
     61	unsigned int flags;
     62};
     63
     64/** SAREA frame */
     65struct drm_sarea_frame {
     66	unsigned int x;
     67	unsigned int y;
     68	unsigned int width;
     69	unsigned int height;
     70	unsigned int fullscreen;
     71};
     72
     73/** SAREA */
     74struct drm_sarea {
     75    /** first thing is always the DRM locking structure */
     76	struct drm_hw_lock lock;
     77    /** \todo Use readers/writer lock for drm_sarea::drawable_lock */
     78	struct drm_hw_lock drawable_lock;
     79	struct drm_sarea_drawable drawableTable[SAREA_MAX_DRAWABLES];	/**< drawables */
     80	struct drm_sarea_frame frame;	/**< frame */
     81	drm_context_t dummy_context;
     82};
     83
     84#ifndef __KERNEL__
     85typedef struct drm_sarea_drawable drm_sarea_drawable_t;
     86typedef struct drm_sarea_frame drm_sarea_frame_t;
     87typedef struct drm_sarea drm_sarea_t;
     88#endif
     89
     90#if defined(__cplusplus)
     91}
     92#endif
     93
     94#endif				/* _DRM_SAREA_H_ */