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
104 lines
2.9 KiB
C
104 lines
2.9 KiB
C
/*
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* Copyright 2011 Red Hat 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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* Authors: Dave Airlie
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*/
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#include <linux/dma-buf.h>
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#include "nouveau_drv.h"
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#include "nouveau_gem.h"
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struct sg_table *nouveau_gem_prime_get_sg_table(struct drm_gem_object *obj)
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{
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struct nouveau_bo *nvbo = nouveau_gem_object(obj);
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return drm_prime_pages_to_sg(obj->dev, nvbo->bo.ttm->pages,
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nvbo->bo.ttm->num_pages);
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}
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struct drm_gem_object *nouveau_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 nouveau_drm *drm = nouveau_drm(dev);
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struct drm_gem_object *obj;
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struct nouveau_bo *nvbo;
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struct dma_resv *robj = attach->dmabuf->resv;
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u64 size = attach->dmabuf->size;
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int align = 0;
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int ret;
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dma_resv_lock(robj, NULL);
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nvbo = nouveau_bo_alloc(&drm->client, &size, &align,
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NOUVEAU_GEM_DOMAIN_GART, 0, 0);
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if (IS_ERR(nvbo)) {
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obj = ERR_CAST(nvbo);
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goto unlock;
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}
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nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_GART;
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nvbo->bo.base.funcs = &nouveau_gem_object_funcs;
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/* Initialize the embedded gem-object. We return a single gem-reference
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* to the caller, instead of a normal nouveau_bo ttm reference. */
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ret = drm_gem_object_init(dev, &nvbo->bo.base, size);
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if (ret) {
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nouveau_bo_ref(NULL, &nvbo);
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obj = ERR_PTR(-ENOMEM);
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goto unlock;
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}
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ret = nouveau_bo_init(nvbo, size, align, NOUVEAU_GEM_DOMAIN_GART,
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sg, robj);
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if (ret) {
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nouveau_bo_ref(NULL, &nvbo);
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obj = ERR_PTR(ret);
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goto unlock;
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}
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obj = &nvbo->bo.base;
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unlock:
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dma_resv_unlock(robj);
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return obj;
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}
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int nouveau_gem_prime_pin(struct drm_gem_object *obj)
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{
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struct nouveau_bo *nvbo = nouveau_gem_object(obj);
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int ret;
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/* pin buffer into GTT */
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ret = nouveau_bo_pin(nvbo, NOUVEAU_GEM_DOMAIN_GART, false);
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if (ret)
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return -EINVAL;
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return 0;
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}
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void nouveau_gem_prime_unpin(struct drm_gem_object *obj)
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{
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struct nouveau_bo *nvbo = nouveau_gem_object(obj);
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nouveau_bo_unpin(nvbo);
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}
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