forked from Minki/linux
975700d2cc
Previously we just allocated space for four hardware semaphores in each software semaphore object. Make software semaphore objects represent only one hardware semaphore address again by splitting the sync code into it's own object. v2: fix typo in comment Signed-off-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
107 lines
3.2 KiB
C
107 lines
3.2 KiB
C
/*
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* Copyright 2011 Christian König.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* 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, sub license, 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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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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* USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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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 portions
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* of the Software.
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*
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*/
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/*
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* Authors:
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* Christian König <deathsimple@vodafone.de>
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*/
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#include <drm/drmP.h>
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#include "radeon.h"
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#include "radeon_trace.h"
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int radeon_semaphore_create(struct radeon_device *rdev,
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struct radeon_semaphore **semaphore)
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{
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int r;
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*semaphore = kmalloc(sizeof(struct radeon_semaphore), GFP_KERNEL);
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if (*semaphore == NULL) {
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return -ENOMEM;
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}
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r = radeon_sa_bo_new(rdev, &rdev->ring_tmp_bo,
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&(*semaphore)->sa_bo, 8, 8);
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if (r) {
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kfree(*semaphore);
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*semaphore = NULL;
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return r;
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}
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(*semaphore)->waiters = 0;
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(*semaphore)->gpu_addr = radeon_sa_bo_gpu_addr((*semaphore)->sa_bo);
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*((uint64_t *)radeon_sa_bo_cpu_addr((*semaphore)->sa_bo)) = 0;
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return 0;
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}
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bool radeon_semaphore_emit_signal(struct radeon_device *rdev, int ridx,
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struct radeon_semaphore *semaphore)
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{
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struct radeon_ring *ring = &rdev->ring[ridx];
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trace_radeon_semaphore_signale(ridx, semaphore);
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if (radeon_semaphore_ring_emit(rdev, ridx, ring, semaphore, false)) {
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--semaphore->waiters;
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/* for debugging lockup only, used by sysfs debug files */
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ring->last_semaphore_signal_addr = semaphore->gpu_addr;
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return true;
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}
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return false;
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}
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bool radeon_semaphore_emit_wait(struct radeon_device *rdev, int ridx,
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struct radeon_semaphore *semaphore)
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{
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struct radeon_ring *ring = &rdev->ring[ridx];
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trace_radeon_semaphore_wait(ridx, semaphore);
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if (radeon_semaphore_ring_emit(rdev, ridx, ring, semaphore, true)) {
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++semaphore->waiters;
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/* for debugging lockup only, used by sysfs debug files */
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ring->last_semaphore_wait_addr = semaphore->gpu_addr;
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return true;
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}
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return false;
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}
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void radeon_semaphore_free(struct radeon_device *rdev,
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struct radeon_semaphore **semaphore,
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struct radeon_fence *fence)
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{
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if (semaphore == NULL || *semaphore == NULL) {
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return;
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}
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if ((*semaphore)->waiters > 0) {
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dev_err(rdev->dev, "semaphore %p has more waiters than signalers,"
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" hardware lockup imminent!\n", *semaphore);
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}
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radeon_sa_bo_free(rdev, &(*semaphore)->sa_bo, fence);
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kfree(*semaphore);
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*semaphore = NULL;
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}
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