46b35b33cc
We have previously done that in the individual drivers but it is more defensive to move that into the common code. Dynamic attachments should wait for map operations to complete by themselves. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20220407085946.744568-12-christian.koenig@amd.com
110 lines
3.1 KiB
C
110 lines
3.1 KiB
C
/*
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* Copyright 2012 Advanced Micro Devices, Inc.
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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 "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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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 NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* based on nouveau_prime.c
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*
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* Authors: Alex Deucher
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*/
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#include <linux/dma-buf.h>
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#include <drm/drm_prime.h>
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#include <drm/radeon_drm.h>
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#include "radeon.h"
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#include "radeon_prime.h"
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struct sg_table *radeon_gem_prime_get_sg_table(struct drm_gem_object *obj)
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{
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struct radeon_bo *bo = gem_to_radeon_bo(obj);
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return drm_prime_pages_to_sg(obj->dev, bo->tbo.ttm->pages,
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bo->tbo.ttm->num_pages);
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}
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struct drm_gem_object *radeon_gem_prime_import_sg_table(struct drm_device *dev,
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struct dma_buf_attachment *attach,
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struct sg_table *sg)
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{
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struct dma_resv *resv = attach->dmabuf->resv;
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struct radeon_device *rdev = dev->dev_private;
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struct radeon_bo *bo;
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int ret;
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dma_resv_lock(resv, NULL);
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ret = radeon_bo_create(rdev, attach->dmabuf->size, PAGE_SIZE, false,
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RADEON_GEM_DOMAIN_GTT, 0, sg, resv, &bo);
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dma_resv_unlock(resv);
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if (ret)
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return ERR_PTR(ret);
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bo->tbo.base.funcs = &radeon_gem_object_funcs;
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mutex_lock(&rdev->gem.mutex);
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list_add_tail(&bo->list, &rdev->gem.objects);
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mutex_unlock(&rdev->gem.mutex);
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bo->prime_shared_count = 1;
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return &bo->tbo.base;
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}
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int radeon_gem_prime_pin(struct drm_gem_object *obj)
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{
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struct radeon_bo *bo = gem_to_radeon_bo(obj);
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int ret = 0;
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ret = radeon_bo_reserve(bo, false);
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if (unlikely(ret != 0))
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return ret;
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/* pin buffer into GTT */
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ret = radeon_bo_pin(bo, RADEON_GEM_DOMAIN_GTT, NULL);
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if (likely(ret == 0))
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bo->prime_shared_count++;
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radeon_bo_unreserve(bo);
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return ret;
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}
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void radeon_gem_prime_unpin(struct drm_gem_object *obj)
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{
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struct radeon_bo *bo = gem_to_radeon_bo(obj);
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int ret = 0;
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ret = radeon_bo_reserve(bo, false);
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if (unlikely(ret != 0))
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return;
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radeon_bo_unpin(bo);
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if (bo->prime_shared_count)
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bo->prime_shared_count--;
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radeon_bo_unreserve(bo);
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}
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struct dma_buf *radeon_gem_prime_export(struct drm_gem_object *gobj,
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int flags)
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{
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struct radeon_bo *bo = gem_to_radeon_bo(gobj);
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if (radeon_ttm_tt_has_userptr(bo->rdev, bo->tbo.ttm))
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return ERR_PTR(-EPERM);
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return drm_gem_prime_export(gobj, flags);
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}
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