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/**************************************************************************
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Copyright 2000, 2001 ATI Technologies Inc., Ontario, Canada, and
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VA Linux Systems Inc., Fremont, California.
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Copyright (C) The Weather Channel, Inc. 2002. All Rights Reserved.
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The Weather Channel (TM) funded Tungsten Graphics to develop the
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initial release of the Radeon 8500 driver under the XFree86 license.
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This notice must be preserved.
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Permission is hereby granted, free of charge, to any person obtaining
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a 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, sublicense, 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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The above copyright notice and this permission notice (including the
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next paragraph) shall be included in all copies or substantial
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portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
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LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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**************************************************************************/
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* Gareth Hughes <gareth@valinux.com>
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* Keith Whitwell <keith@tungstengraphics.com>
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* Kevin E. Martin <martin@valinux.com>
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#include "main/glheader.h"
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#include "main/mtypes.h"
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#include "main/colormac.h"
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#include "radeon_screen.h"
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#include "radeon_common.h"
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#include "radeon_lock.h"
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/* Update the hardware state. This is called if another context has
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* grabbed the hardware lock, which includes the X server. This
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* function also updates the driver's window state after the X server
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* moves, resizes or restacks a window -- the change will be reflected
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* in the drawable position and clip rects. Since the X server grabs
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* the hardware lock when it changes the window state, this routine will
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* automatically be called after such a change.
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void radeonGetLock(radeonContextPtr rmesa, GLuint flags)
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__DRIdrawable *const drawable = radeon_get_drawable(rmesa);
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__DRIdrawable *const readable = radeon_get_readable(rmesa);
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__DRIscreen *sPriv = rmesa->dri.screen;
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drmGetLock(rmesa->dri.fd, rmesa->dri.hwContext, flags);
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/* The window might have moved, so we might need to get new clip
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* NOTE: This releases and regrabs the hw lock to allow the X server
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* to respond to the DRI protocol request for new drawable info.
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* Since the hardware state depends on having the latest drawable
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* clip rects, all state checking must be done _after_ this call.
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DRI_VALIDATE_DRAWABLE_INFO(sPriv, drawable);
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if (readable && drawable != readable) {
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DRI_VALIDATE_DRAWABLE_INFO(sPriv, readable);
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if (drawable && (rmesa->lastStamp != drawable->lastStamp)) {
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radeon_window_moved(rmesa);
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rmesa->lastStamp = drawable->lastStamp;
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rmesa->vtbl.get_lock(rmesa);
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static struct lock_debug ldebug = {0};
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/** TODO: use atomic operations for reference counting **/
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/** gcc 4.2 has builtin functios for this **/
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#define ATOMIC_INC_AND_FETCH(atomic) __sync_add_and_fetch(&atomic, 1)
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#define ATOMIC_DEC_AND_FETCH(atomic) __sync_sub_and_fetch(&atomic, 1)
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#define ATOMIC_INC_AND_FETCH(atomic) (++atomic)
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#define ATOMIC_DEC_AND_FETCH(atomic) (--atomic)
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void radeon_lock_hardware(radeonContextPtr radeon
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,const char* function
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struct radeon_framebuffer *rfb = NULL;
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struct radeon_renderbuffer *rrb = NULL;
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if (radeon_get_drawable(radeon)) {
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rfb = radeon_get_drawable(radeon)->driverPrivate;
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rrb = radeon_get_renderbuffer(&rfb->base,
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rfb->base._ColorDrawBufferIndexes[0]);
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if (!radeon->radeonScreen->driScreen->dri2.enabled) {
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if (ATOMIC_INC_AND_FETCH(radeon->dri.hwLockCount) > 1)
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if ( RADEON_DEBUG & RADEON_SANITY )
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fprintf(stderr, "*** %d times of recursive call to %s ***\n"
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"Original call was from %s (file: %s line: %d)\n"
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"Now call is coming from %s (file: %s line: %d)\n"
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, radeon->dri.hwLockCount, __FUNCTION__
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, ldebug.function, ldebug.file, ldebug.line
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, function, file, line
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DRM_CAS(radeon->dri.hwLock, radeon->dri.hwContext,
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(DRM_LOCK_HELD | radeon->dri.hwContext), ret );
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radeonGetLock(radeon, 0);
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ldebug.function = function;
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void radeon_unlock_hardware(radeonContextPtr radeon)
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if (!radeon->radeonScreen->driScreen->dri2.enabled) {
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if (ATOMIC_DEC_AND_FETCH(radeon->dri.hwLockCount) > 0)
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DRM_UNLOCK( radeon->dri.fd,
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radeon->dri.hwContext );