diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem_dmabuf.c')
-rw-r--r-- | drivers/gpu/drm/i915/i915_gem_dmabuf.c | 44 |
1 files changed, 30 insertions, 14 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/i915_gem_dmabuf.c index 4bb1b94df5c..ca3497e1108 100644 --- a/drivers/gpu/drm/i915/i915_gem_dmabuf.c +++ b/drivers/gpu/drm/i915/i915_gem_dmabuf.c @@ -82,7 +82,8 @@ out: } static void i915_gem_unmap_dma_buf(struct dma_buf_attachment *attachment, - struct sg_table *sg, enum dma_data_direction dir) + struct sg_table *sg, + enum dma_data_direction dir) { dma_unmap_sg(attachment->dev, sg->sgl, sg->nents, dir); sg_free_table(sg); @@ -228,11 +229,35 @@ struct dma_buf *i915_gem_prime_export(struct drm_device *dev, return dma_buf_export(obj, &i915_dmabuf_ops, obj->base.size, 0600); } +static int i915_gem_object_get_pages_dmabuf(struct drm_i915_gem_object *obj) +{ + struct sg_table *sg; + + sg = dma_buf_map_attachment(obj->base.import_attach, DMA_BIDIRECTIONAL); + if (IS_ERR(sg)) + return PTR_ERR(sg); + + obj->pages = sg; + obj->has_dma_mapping = true; + return 0; +} + +static void i915_gem_object_put_pages_dmabuf(struct drm_i915_gem_object *obj) +{ + dma_buf_unmap_attachment(obj->base.import_attach, + obj->pages, DMA_BIDIRECTIONAL); + obj->has_dma_mapping = false; +} + +static const struct drm_i915_gem_object_ops i915_gem_object_dmabuf_ops = { + .get_pages = i915_gem_object_get_pages_dmabuf, + .put_pages = i915_gem_object_put_pages_dmabuf, +}; + struct drm_gem_object *i915_gem_prime_import(struct drm_device *dev, struct dma_buf *dma_buf) { struct dma_buf_attachment *attach; - struct sg_table *sg; struct drm_i915_gem_object *obj; int ret; @@ -251,34 +276,25 @@ struct drm_gem_object *i915_gem_prime_import(struct drm_device *dev, if (IS_ERR(attach)) return ERR_CAST(attach); - sg = dma_buf_map_attachment(attach, DMA_BIDIRECTIONAL); - if (IS_ERR(sg)) { - ret = PTR_ERR(sg); - goto fail_detach; - } obj = kzalloc(sizeof(*obj), GFP_KERNEL); if (obj == NULL) { ret = -ENOMEM; - goto fail_unmap; + goto fail_detach; } ret = drm_gem_private_object_init(dev, &obj->base, dma_buf->size); if (ret) { kfree(obj); - goto fail_unmap; + goto fail_detach; } - obj->has_dma_mapping = true; - obj->sg_table = sg; + i915_gem_object_init(obj, &i915_gem_object_dmabuf_ops); obj->base.import_attach = attach; return &obj->base; -fail_unmap: - dma_buf_unmap_attachment(attach, sg, DMA_BIDIRECTIONAL); fail_detach: dma_buf_detach(dma_buf, attach); return ERR_PTR(ret); } - |