/*
* Copyright 2011 Christian K ö nig .
* 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 K ö nig < deathsimple @ vodafone . de >
*/
#include "radeon.h"
#include "radeon_trace.h"
int radeon_semaphore_create(struct radeon_device *rdev,
struct radeon_semaphore **semaphore)
{
int r;
*semaphore = kmalloc(sizeof (struct radeon_semaphore), GFP_KERNEL);
if (*semaphore == NULL) {
return -ENOMEM;
}
r = radeon_sa_bo_new(&rdev->ring_tmp_bo,
&(*semaphore)->sa_bo, 8 , 8 );
if (r) {
kfree(*semaphore);
*semaphore = NULL;
return r;
}
(*semaphore)->waiters = 0 ;
(*semaphore)->gpu_addr = radeon_sa_bo_gpu_addr((*semaphore)->sa_bo);
*((uint64_t *)radeon_sa_bo_cpu_addr((*semaphore)->sa_bo)) = 0 ;
return 0 ;
}
bool radeon_semaphore_emit_signal(struct radeon_device *rdev, int ridx,
struct radeon_semaphore *semaphore)
{
struct radeon_ring *ring = &rdev->ring[ridx];
trace_radeon_semaphore_signale(ridx, semaphore);
if (radeon_semaphore_ring_emit(rdev, ridx, ring, semaphore, false )) {
--semaphore->waiters;
/* for debugging lockup only, used by sysfs debug files */
ring->last_semaphore_signal_addr = semaphore->gpu_addr;
return true ;
}
return false ;
}
bool radeon_semaphore_emit_wait(struct radeon_device *rdev, int ridx,
struct radeon_semaphore *semaphore)
{
struct radeon_ring *ring = &rdev->ring[ridx];
trace_radeon_semaphore_wait(ridx, semaphore);
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;
return true ;
}
return false ;
}
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;
}
Messung V0.5 in Prozent C=88 H=92 G=89
¤ Dauer der Verarbeitung: 0.10 Sekunden
(vorverarbeitet am 2026-09-27)
¤
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