Quellcode-Bibliothek radeon_semaphore.c
Sprache: C
/* * Copyright 2011 Christian König. * 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 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 * THE COPYRIGHT HOLDERS, AUTHORS 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. * * The above copyright notice and this permission notice (including the * next paragraph) shall be included in all copies or substantial portions * of the Software. *
*/ /* * Authors: * Christian König <deathsimple@vodafone.de>
*/
#include"radeon.h" #include"radeon_trace.h"
int radeon_semaphore_create(struct radeon_device *rdev, struct radeon_semaphore **semaphore)
{ int r;
if (radeon_semaphore_ring_emit(rdev, ridx, ring, semaphore, true)) {
++semaphore->waiters;
/* for debugging lockup only, used by sysfs debug files */
ring->last_semaphore_wait_addr = semaphore->gpu_addr; returntrue;
} returnfalse;
}
void radeon_semaphore_free(struct radeon_device *rdev, struct radeon_semaphore **semaphore, struct radeon_fence *fence)
{ if (semaphore == NULL || *semaphore == NULL) { return;
} if ((*semaphore)->waiters > 0) {
dev_err(rdev->dev, "semaphore %p has more waiters than signalers," " hardware lockup imminent!\n", *semaphore);
}
radeon_sa_bo_free(&(*semaphore)->sa_bo, fence);
kfree(*semaphore);
*semaphore = NULL;
}
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