2011-09-15 11:02:22 -06:00
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/*
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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 "drmP.h"
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#include "drm.h"
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#include "radeon.h"
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static int allocate_semaphores(struct radeon_device *rdev)
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{
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const unsigned long bo_size = PAGE_SIZE * 4;
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struct radeon_bo *bo;
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struct list_head new_entrys;
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unsigned long irq_flags;
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uint64_t gpu_addr;
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void *map;
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int i, r;
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r = radeon_bo_create(rdev, bo_size, RADEON_GPU_PAGE_SIZE, true,
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RADEON_GEM_DOMAIN_GTT, &bo);
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if (r) {
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dev_err(rdev->dev, "(%d) failed to allocate semaphore bo\n", r);
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return r;
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}
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r = radeon_bo_reserve(bo, false);
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if (r) {
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radeon_bo_unref(&bo);
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dev_err(rdev->dev, "(%d) failed to reserve semaphore bo\n", r);
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return r;
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}
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r = radeon_bo_kmap(bo, &map);
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if (r) {
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radeon_bo_unreserve(bo);
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radeon_bo_unref(&bo);
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dev_err(rdev->dev, "(%d) semaphore map failed\n", r);
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return r;
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}
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memset(map, 0, bo_size);
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radeon_bo_kunmap(bo);
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r = radeon_bo_pin(bo, RADEON_GEM_DOMAIN_VRAM, &gpu_addr);
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if (r) {
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radeon_bo_unreserve(bo);
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radeon_bo_unref(&bo);
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dev_err(rdev->dev, "(%d) semaphore pin failed\n", r);
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return r;
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}
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INIT_LIST_HEAD(&new_entrys);
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for (i = 0; i < bo_size/8; ++i) {
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struct radeon_semaphore *sem = kmalloc(sizeof(struct radeon_semaphore), GFP_KERNEL);
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ttm_bo_reference(&bo->tbo);
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sem->robj = bo;
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sem->gpu_addr = gpu_addr;
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gpu_addr += 8;
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list_add_tail(&sem->list, &new_entrys);
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}
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radeon_bo_unreserve(bo);
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radeon_bo_unref(&bo);
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write_lock_irqsave(&rdev->semaphore_drv.lock, irq_flags);
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list_splice_tail(&new_entrys, &rdev->semaphore_drv.free);
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write_unlock_irqrestore(&rdev->semaphore_drv.lock, irq_flags);
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DRM_INFO("%d new semaphores allocated\n", (int)(bo_size/8));
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return 0;
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}
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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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unsigned long irq_flags;
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write_lock_irqsave(&rdev->semaphore_drv.lock, irq_flags);
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if (list_empty(&rdev->semaphore_drv.free)) {
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int r;
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write_unlock_irqrestore(&rdev->semaphore_drv.lock, irq_flags);
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r = allocate_semaphores(rdev);
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if (r)
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return r;
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write_lock_irqsave(&rdev->semaphore_drv.lock, irq_flags);
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}
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*semaphore = list_first_entry(&rdev->semaphore_drv.free, struct radeon_semaphore, list);
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list_del(&(*semaphore)->list);
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write_unlock_irqrestore(&rdev->semaphore_drv.lock, irq_flags);
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return 0;
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}
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void radeon_semaphore_emit_signal(struct radeon_device *rdev, int ring,
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struct radeon_semaphore *semaphore)
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{
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2011-10-23 04:56:27 -06:00
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radeon_semaphore_ring_emit(rdev, ring, &rdev->ring[ring], semaphore, false);
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2011-09-15 11:02:22 -06:00
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}
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void radeon_semaphore_emit_wait(struct radeon_device *rdev, int ring,
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struct radeon_semaphore *semaphore)
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{
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2011-10-23 04:56:27 -06:00
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radeon_semaphore_ring_emit(rdev, ring, &rdev->ring[ring], semaphore, true);
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2011-09-15 11:02:22 -06:00
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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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{
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unsigned long irq_flags;
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write_lock_irqsave(&rdev->semaphore_drv.lock, irq_flags);
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list_add_tail(&semaphore->list, &rdev->semaphore_drv.free);
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write_unlock_irqrestore(&rdev->semaphore_drv.lock, irq_flags);
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}
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void radeon_semaphore_driver_fini(struct radeon_device *rdev)
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{
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struct radeon_semaphore *i, *n;
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struct list_head entrys;
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unsigned long irq_flags;
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INIT_LIST_HEAD(&entrys);
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write_lock_irqsave(&rdev->semaphore_drv.lock, irq_flags);
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if (!list_empty(&rdev->semaphore_drv.free)) {
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list_splice(&rdev->semaphore_drv.free, &entrys);
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}
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INIT_LIST_HEAD(&rdev->semaphore_drv.free);
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write_unlock_irqrestore(&rdev->semaphore_drv.lock, irq_flags);
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list_for_each_entry_safe(i, n, &entrys, list) {
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radeon_bo_unref(&i->robj);
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kfree(i);
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}
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}
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