129 lines
3.3 KiB
C
129 lines
3.3 KiB
C
/*
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* Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*
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* Author: Alan Hourihane <alanh@tungstengraphics.com>
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*
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "xf86.h"
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#include "xf86_OSproc.h"
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#include "driver.h"
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#include "dri2.h"
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extern unsigned int
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driGetPixmapHandle(PixmapPtr pPixmap, unsigned int *flags);
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void
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driLock(ScreenPtr pScreen)
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{
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ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
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modesettingPtr ms = modesettingPTR(pScrn);
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if (!ms->lock_held)
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DRM_LOCK(ms->fd, ms->lock, ms->context, 0);
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ms->lock_held = 1;
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}
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void
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driUnlock(ScreenPtr pScreen)
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{
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ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
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modesettingPtr ms = modesettingPTR(pScrn);
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if (ms->lock_held)
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DRM_UNLOCK(ms->fd, ms->lock, ms->context);
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ms->lock_held = 0;
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}
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static void
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driBeginClipNotify(ScreenPtr pScreen)
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{
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driLock(pScreen);
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}
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static void
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driEndClipNotify(ScreenPtr pScreen)
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{
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driUnlock(pScreen);
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}
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struct __DRILock
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{
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unsigned int block_header;
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drm_hw_lock_t lock;
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unsigned int next_id;
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};
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#define DRI2_SAREA_BLOCK_HEADER(type, size) (((type) << 16) | (size))
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#define DRI2_SAREA_BLOCK_LOCK 0x0001
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void
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driScreenInit(ScreenPtr pScreen)
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{
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ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
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modesettingPtr ms = modesettingPTR(pScrn);
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DRI2InfoRec dri2info;
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const char *driverName;
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unsigned int sarea_handle;
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struct __DRILock *DRILock;
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void *p;
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dri2info.version = 1;
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dri2info.fd = ms->fd;
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dri2info.driverSareaSize = sizeof(struct __DRILock);
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dri2info.driverName = "i915"; /* FIXME */
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dri2info.getPixmapHandle = driGetPixmapHandle;
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dri2info.beginClipNotify = driBeginClipNotify;
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dri2info.endClipNotify = driEndClipNotify;
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p = DRI2ScreenInit(pScreen, &dri2info);
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if (!p)
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return;
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DRILock = p;
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DRILock->block_header =
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DRI2_SAREA_BLOCK_HEADER(DRI2_SAREA_BLOCK_LOCK, sizeof *DRILock);
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ms->lock = &DRILock->lock;
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ms->context = 1;
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DRILock->next_id = 2;
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driLock(pScreen);
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DRI2Connect(pScreen, &ms->fd, &driverName, &sarea_handle);
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}
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void
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driCloseScreen(ScreenPtr pScreen)
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{
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driUnlock(pScreen);
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DRI2CloseScreen(pScreen);
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}
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