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/*
* Copyright © 2013 Keith Packard
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that copyright
* notice and this permission notice appear in supporting documentation, and
* that the name of the copyright holders not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. The copyright holders make no representations
* about the suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
* OF THIS SOFTWARE.
*/
#include "radeon.h"
/*
* This whole file exists to wrap a sync fence trigger operation
* so that we can flush the batch buffer to provide serialization
* between the server and the shm fence client
*/
static DevPrivateKeyRec radeon_sync_fence_private_key;
typedef struct _radeon_sync_fence_private {
SyncFenceSetTriggeredFunc set_triggered;
} radeon_sync_fence_private;
#define SYNC_FENCE_PRIV(pFence) \
(radeon_sync_fence_private *) dixLookupPrivate(&pFence->devPrivates, &radeon_sync_fence_private_key)
static void
radeon_sync_fence_set_triggered (SyncFence *fence)
{
ScreenPtr screen = fence->pScreen;
ScrnInfoPtr scrn = xf86ScreenToScrn(screen);
RADEONInfoPtr info = RADEONPTR(scrn);
radeon_sync_fence_private *private = SYNC_FENCE_PRIV(fence);
/* Flush pending rendering operations */
if (info->flush_rendering)
info->flush_rendering(scrn);
fence->funcs.SetTriggered = private->set_triggered;
(*fence->funcs.SetTriggered)(fence);
private->set_triggered = fence->funcs.SetTriggered;
fence->funcs.SetTriggered = radeon_sync_fence_set_triggered;
}
static void
radeon_sync_create_fence(ScreenPtr screen,
SyncFence *fence,
Bool initially_triggered)
{
ScrnInfoPtr scrn = xf86ScreenToScrn(screen);
RADEONInfoPtr info = RADEONPTR(scrn);
SyncScreenFuncsPtr screen_funcs = miSyncGetScreenFuncs(screen);
radeon_sync_fence_private *private = SYNC_FENCE_PRIV(fence);
screen_funcs->CreateFence = info->save_sync_screen_funcs.CreateFence;
(*screen_funcs->CreateFence)(screen, fence, initially_triggered);
private->set_triggered = fence->funcs.SetTriggered;
fence->funcs.SetTriggered = radeon_sync_fence_set_triggered;
}
Bool
radeon_sync_init(ScreenPtr screen)
{
ScrnInfoPtr scrn = xf86ScreenToScrn(screen);
RADEONInfoPtr info = RADEONPTR(scrn);
SyncScreenFuncsPtr screen_funcs;
if (!miSyncShmScreenInit(screen))
return FALSE;
if (!dixPrivateKeyRegistered(&radeon_sync_fence_private_key)) {
if (!dixRegisterPrivateKey(&radeon_sync_fence_private_key,
PRIVATE_SYNC_FENCE,
sizeof (radeon_sync_fence_private)))
return FALSE;
}
screen_funcs = miSyncGetScreenFuncs(screen);
info->save_sync_screen_funcs.CreateFence = screen_funcs->CreateFence;
screen_funcs->CreateFence = radeon_sync_create_fence;
return TRUE;
}
void
radeon_sync_close(ScreenPtr screen)
{
ScrnInfoPtr scrn = xf86ScreenToScrn(screen);
RADEONInfoPtr info = RADEONPTR(scrn);
SyncScreenFuncsPtr screen_funcs = miSyncGetScreenFuncs(screen);
if (screen_funcs)
screen_funcs->CreateFence = info->save_sync_screen_funcs.CreateFence;
}
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