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drm/rocckhip: implement rockchip_drm_gem_prime_import

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when import dma-buf we should compare dma_buf->ops with rockchip_drm_gem_prime_dmabuf_ops;
so we implement rockchip_drm_gem_prime_import to instead of drm_gem_prime_import.

Signed-off-by: Sandy Huang <hjc@rock-chips.com>
Change-Id: Iab3260b5c3efb5634d411eb1e8620fb575aa063c
This commit is contained in:
Sandy Huang
2021-07-02 16:13:14 +08:00
committed by Tao Huang
parent 55e4328316
commit b8798bd004
1 changed files with 63 additions and 1 deletions
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64
drivers/gpu/drm/rockchip/rockchip_drm_drv.c
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@@ -564,6 +564,68 @@ static const struct dma_buf_ops rockchip_drm_gem_prime_dmabuf_ops = {
.end_cpu_access = rockchip_drm_gem_dmabuf_end_cpu_access,
};
static struct drm_gem_object *rockchip_drm_gem_prime_import_dev(struct drm_device *dev,
struct dma_buf *dma_buf,
struct device *attach_dev)
{
struct dma_buf_attachment *attach;
struct sg_table *sgt;
struct drm_gem_object *obj;
int ret;
if (dma_buf->ops == &rockchip_drm_gem_prime_dmabuf_ops) {
obj = dma_buf->priv;
if (obj->dev == dev) {
/*
* Importing dmabuf exported from out own gem increases
* refcount on gem itself instead of f_count of dmabuf.
*/
drm_gem_object_get(obj);
return obj;
}
}
if (!dev->driver->gem_prime_import_sg_table)
return ERR_PTR(-EINVAL);
attach = dma_buf_attach(dma_buf, attach_dev);
if (IS_ERR(attach))
return ERR_CAST(attach);
get_dma_buf(dma_buf);
sgt = dma_buf_map_attachment(attach, DMA_BIDIRECTIONAL);
if (IS_ERR(sgt)) {
ret = PTR_ERR(sgt);
goto fail_detach;
}
obj = dev->driver->gem_prime_import_sg_table(dev, attach, sgt);
if (IS_ERR(obj)) {
ret = PTR_ERR(obj);
goto fail_unmap;
}
obj->import_attach = attach;
obj->resv = dma_buf->resv;
return obj;
fail_unmap:
dma_buf_unmap_attachment(attach, sgt, DMA_BIDIRECTIONAL);
fail_detach:
dma_buf_detach(dma_buf, attach);
dma_buf_put(dma_buf);
return ERR_PTR(ret);
}
static struct drm_gem_object *rockchip_drm_gem_prime_import(struct drm_device *dev,
struct dma_buf *dma_buf)
{
return rockchip_drm_gem_prime_import_dev(dev, dma_buf, dev->dev);
}
static struct dma_buf *rockchip_drm_gem_prime_export(struct drm_gem_object *obj,
int flags)
{
@@ -589,7 +651,7 @@ static struct drm_driver rockchip_drm_driver = {
.dumb_create = rockchip_gem_dumb_create,
.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
.gem_prime_import = drm_gem_prime_import,
.gem_prime_import = rockchip_drm_gem_prime_import,
.gem_prime_export = rockchip_drm_gem_prime_export,
.gem_prime_get_sg_table = rockchip_gem_prime_get_sg_table,
.gem_prime_import_sg_table = rockchip_gem_prime_import_sg_table,