diff options
Diffstat (limited to 'src/mesa/drivers/dri/intel_winsys/intel_lock.c')
-rw-r--r-- | src/mesa/drivers/dri/intel_winsys/intel_lock.c | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/intel_winsys/intel_lock.c b/src/mesa/drivers/dri/intel_winsys/intel_lock.c new file mode 100644 index 0000000000..34319545d9 --- /dev/null +++ b/src/mesa/drivers/dri/intel_winsys/intel_lock.c @@ -0,0 +1,169 @@ +/************************************************************************** + * + * Copyright 2003 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, sub license, 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 NON-INFRINGEMENT. + * 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. + * + **************************************************************************/ + + +#include "glheader.h" +#include "context.h" +#include "extensions.h" + +#include "intel_screen.h" + +#include "i830_dri.h" + +#include "intel_ioctl.h" +#include "intel_batchbuffer.h" + +#include "state_tracker/st_public.h" +#include "state_tracker/st_context.h" + +#include "drirenderbuffer.h" +#include "vblank.h" +#include "utils.h" +#include "xmlpool.h" /* for symbolic values of enum-type options */ + + + +_glthread_DECLARE_STATIC_MUTEX( lockMutex ); + + +static void +intelContendedLock(struct intel_context *intel, GLuint flags) +{ + __DRIdrawablePrivate *dPriv = intel->driDrawable; + __DRIscreenPrivate *sPriv = intel->driScreen; + intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private; + drmI830Sarea *sarea = intel->sarea; + + drmGetLock(intel->driFd, intel->hHWContext, flags); + + DBG(LOCK, "%s - got contended lock\n", __progname); + + /* If the window moved, may need to set a new cliprect now. + * + * NOTE: This releases and regains the hw lock, so all state + * checking must be done *after* this call: + */ + if (dPriv) + DRI_VALIDATE_DRAWABLE_INFO(sPriv, dPriv); + + if (sarea->width != intelScreen->front.width || + sarea->height != intelScreen->front.height) { + + intelUpdateScreenRotation(sPriv, sarea); + } + +#if 0 + if (sarea->width != intel->width || + sarea->height != intel->height || + sarea->rotation != intel->current_rotation) { + int numClipRects = intel->numClipRects; + + /* + * FIXME: Really only need to do this when drawing to a + * common back- or front buffer. + */ + + /* + * This will essentially drop the outstanding batchbuffer on the floor. + */ + intel->numClipRects = 0; + + INTEL_FIREVERTICES(intel); + + if (intel->batch->map != intel->batch->ptr) + intel_batchbuffer_flush(intel->batch); + + intel->numClipRects = numClipRects; + + /* force window update */ + intel->lastStamp = 0; + + intel->width = sarea->width; + intel->height = sarea->height; + intel->current_rotation = sarea->rotation; + } +#endif +} + +/* Lock the hardware and validate our state. + */ +void LOCK_HARDWARE( struct intel_context *intel ) +{ + char __ret=0; + struct intel_framebuffer *intel_fb = NULL; + int curbuf; + + _glthread_LOCK_MUTEX(lockMutex); + assert(!intel->locked); + + if (intel->driDrawable) { + intel_fb = intel->driDrawable->driverPrivate; + } + + curbuf = 0; /* current draw buf: 0 = front, 1 = back */ + + if (intel_fb && intel_fb->vblank_flags && + !(intel_fb->vblank_flags & VBLANK_FLAG_NO_IRQ) && + (intel_fb->vbl_waited - intel_fb->vbl_pending[curbuf]) > (1<<23)) { + drmVBlank vbl; + + vbl.request.type = DRM_VBLANK_ABSOLUTE; + + if ( intel_fb->vblank_flags & VBLANK_FLAG_SECONDARY ) { + vbl.request.type |= DRM_VBLANK_SECONDARY; + } + + vbl.request.sequence = intel_fb->vbl_pending[curbuf]; + drmWaitVBlank(intel->driFd, &vbl); + intel_fb->vbl_waited = vbl.reply.sequence; + } + + DRM_CAS(intel->driHwLock, intel->hHWContext, + (DRM_LOCK_HELD|intel->hHWContext), __ret); + + if (__ret) + intelContendedLock( intel, 0 ); + + DBG(LOCK, "%s - locked\n", __progname); + + intel->locked = 1; +} + + + /* Unlock the hardware using the global current context + */ +void UNLOCK_HARDWARE( struct intel_context *intel ) +{ + assert(intel->locked); + intel->locked = 0; + + DRM_UNLOCK(intel->driFd, intel->driHwLock, intel->hHWContext); + + _glthread_UNLOCK_MUTEX(lockMutex); + + DBG(LOCK, "%s - unlocked\n", __progname); +} |