mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-11-01 00:48:50 +00:00
7c1c2871a6
This is step one towards having multiple masters sharing a drm device in order to get fast-user-switching to work. It splits out the information associated with the drm master into a separate kref counted structure, and allocates this when a master opens the device node. It also allows the current master to abdicate (say while VT switched), and a new master to take over the hardware. It moves the Intel and radeon drivers to using the sarea from within the new master structures. Signed-off-by: Dave Airlie <airlied@redhat.com>
84 lines
2.6 KiB
C
84 lines
2.6 KiB
C
/**
|
|
* \file drm_sarea.h
|
|
* \brief SAREA definitions
|
|
*
|
|
* \author Michel Dänzer <michel@daenzer.net>
|
|
*/
|
|
|
|
/*
|
|
* Copyright 2002 Tungsten Graphics, Inc., Cedar Park, Texas.
|
|
* All Rights Reserved.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice (including the next
|
|
* paragraph) shall be included in all copies or substantial portions of the
|
|
* Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
|
|
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
|
|
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
|
|
* OTHER DEALINGS IN THE SOFTWARE.
|
|
*/
|
|
|
|
#ifndef _DRM_SAREA_H_
|
|
#define _DRM_SAREA_H_
|
|
|
|
#include "drm.h"
|
|
|
|
/* SAREA area needs to be at least a page */
|
|
#if defined(__alpha__)
|
|
#define SAREA_MAX 0x2000U
|
|
#elif defined(__ia64__)
|
|
#define SAREA_MAX 0x10000U /* 64kB */
|
|
#else
|
|
/* Intel 830M driver needs at least 8k SAREA */
|
|
#define SAREA_MAX 0x2000U
|
|
#endif
|
|
|
|
/** Maximum number of drawables in the SAREA */
|
|
#define SAREA_MAX_DRAWABLES 256
|
|
|
|
#define SAREA_DRAWABLE_CLAIMED_ENTRY 0x80000000
|
|
|
|
/** SAREA drawable */
|
|
struct drm_sarea_drawable {
|
|
unsigned int stamp;
|
|
unsigned int flags;
|
|
};
|
|
|
|
/** SAREA frame */
|
|
struct drm_sarea_frame {
|
|
unsigned int x;
|
|
unsigned int y;
|
|
unsigned int width;
|
|
unsigned int height;
|
|
unsigned int fullscreen;
|
|
};
|
|
|
|
/** SAREA */
|
|
struct drm_sarea {
|
|
/** first thing is always the DRM locking structure */
|
|
struct drm_hw_lock lock;
|
|
/** \todo Use readers/writer lock for drm_sarea::drawable_lock */
|
|
struct drm_hw_lock drawable_lock;
|
|
struct drm_sarea_drawable drawableTable[SAREA_MAX_DRAWABLES]; /**< drawables */
|
|
struct drm_sarea_frame frame; /**< frame */
|
|
drm_context_t dummy_context;
|
|
};
|
|
|
|
#ifndef __KERNEL__
|
|
typedef struct drm_sarea_drawable drm_sarea_drawable_t;
|
|
typedef struct drm_sarea_frame drm_sarea_frame_t;
|
|
typedef struct drm_sarea drm_sarea_t;
|
|
#endif
|
|
|
|
#endif /* _DRM_SAREA_H_ */
|