Alex helped push this into drm-tip, https://cgit.freedesktop.org/drm/drm-tip/commit/drivers/gpu/drm?id=f7a71b0cf9e36c1b0edbfe89ce028a01164b864d Thanks, Samuel Li > -----Original Message----- > From: Daniel Vetter [mailto:daniel.vetter@xxxxxxxx] On Behalf Of Daniel > Vetter > Sent: Tuesday, January 30, 2018 4:33 AM > To: Koenig, Christian <Christian.Koenig@xxxxxxx> > Cc: Li, Samuel <Samuel.Li@xxxxxxx>; amd-gfx@xxxxxxxxxxxxxxxxxxxxx; dri- > devel@xxxxxxxxxxxxxxxxxxxxx > Subject: Re: [PATCH v2 1/1] drm: add kernel doc for exported gem > dmabuf_ops > > On Fri, Jan 19, 2018 at 09:51:20AM +0100, Christian König wrote: > > Am 18.01.2018 um 22:44 schrieb Samuel Li: > > > Signed-off-by: Samuel Li <Samuel.Li@xxxxxxx> > > > Reviewed-by: Daniel Vetter <daniel.vetter@xxxxxxxx> > > Thanks for updating the docs. > > > > Reviewed-by: Christian König <christian.koenig@xxxxxxx> > > I'm assuming you'll als push this one. > -Daniel > > > > > > --- > > > drivers/gpu/drm/drm_prime.c | 88 > +++++++++++++++++++++++++++++++++++++++++++++ > > > 1 file changed, 88 insertions(+) > > > > > > diff --git a/drivers/gpu/drm/drm_prime.c > > > b/drivers/gpu/drm/drm_prime.c index ca09ce7..e82a976 100644 > > > --- a/drivers/gpu/drm/drm_prime.c > > > +++ b/drivers/gpu/drm/drm_prime.c > > > @@ -73,6 +73,9 @@ > > > * Drivers should detect this situation and return back the gem object > > > * from the dma-buf private. Prime will do this automatically for drivers > that > > > * use the drm_gem_prime_{import,export} helpers. > > > + * > > > + * GEM struct &dma_buf_ops symbols are now exported. They can be > > > + resued by > > > + * drivers which implement GEM interface. > > > */ > > > struct drm_prime_member { > > > @@ -180,6 +183,18 @@ static int drm_prime_lookup_buf_handle(struct > drm_prime_file_private *prime_fpri > > > return -ENOENT; > > > } > > > +/** > > > + * drm_gem_map_attach - dma_buf attach implementation for GEM > > > + * @dma_buf: buffer to attach device to > > > + * @target_dev: not used > > > + * @attach: buffer attachment data > > > + * > > > + * Allocates &drm_prime_attachment and calls > > > +&drm_driver.gem_prime_pin for > > > + * device specific attachment. This can be used as the > > > +&dma_buf_ops.attach > > > + * callback. > > > + * > > > + * Returns 0 on success, negative error code on failure. > > > + */ > > > int drm_gem_map_attach(struct dma_buf *dma_buf, struct device > *target_dev, > > > struct dma_buf_attachment *attach) > > > { > > > @@ -201,6 +216,14 @@ int drm_gem_map_attach(struct dma_buf > *dma_buf, struct device *target_dev, > > > } > > > EXPORT_SYMBOL(drm_gem_map_attach); > > > +/** > > > + * drm_gem_map_detach - dma_buf detach implementation for GEM > > > + * @dma_buf: buffer to detach from > > > + * @attach: attachment to be detached > > > + * > > > + * Cleans up &dma_buf_attachment. This can be used as the > > > +&dma_buf_ops.detach > > > + * callback. > > > + */ > > > void drm_gem_map_detach(struct dma_buf *dma_buf, > > > struct dma_buf_attachment *attach) > > > { > > > @@ -255,6 +278,18 @@ void > drm_prime_remove_buf_handle_locked(struct drm_prime_file_private > *prime_fpr > > > } > > > } > > > +/** > > > + * drm_gem_map_dma_buf - map_dma_buf implementation for GEM > > > + * @attach: attachment whose scatterlist is to be returned > > > + * @dir: direction of DMA transfer > > > + * > > > + * Calls &drm_driver.gem_prime_get_sg_table and then maps the > > > +scatterlist. This > > > + * can be used as the &dma_buf_ops.map_dma_buf callback. > > > + * > > > + * Returns sg_table containing the scatterlist to be returned; > > > +returns ERR_PTR > > > + * on error. May return -EINTR if it is interrupted by a signal. > > > + */ > > > + > > > struct sg_table *drm_gem_map_dma_buf(struct dma_buf_attachment > *attach, > > > enum dma_data_direction dir) > > > { > > > @@ -294,6 +329,12 @@ struct sg_table *drm_gem_map_dma_buf(struct > dma_buf_attachment *attach, > > > } > > > EXPORT_SYMBOL(drm_gem_map_dma_buf); > > > +/** > > > + * drm_gem_unmap_dma_buf - unmap_dma_buf implementation for > GEM > > > + * > > > + * Not implemented. The unmap is done at drm_gem_map_detach(). > > > +This can be > > > + * used as the &dma_buf_ops.unmap_dma_buf callback. > > > + */ > > > void drm_gem_unmap_dma_buf(struct dma_buf_attachment *attach, > > > struct sg_table *sgt, > > > enum dma_data_direction dir) @@ -351,6 +392,15 > @@ void > > > drm_gem_dmabuf_release(struct dma_buf *dma_buf) > > > } > > > EXPORT_SYMBOL(drm_gem_dmabuf_release); > > > +/** > > > + * drm_gem_dmabuf_vmap - dma_buf vmap implementation for GEM > > > + * @dma_buf: buffer to be mapped > > > + * > > > + * Sets up a kernel virtual mapping. This can be used as the > > > +&dma_buf_ops.vmap > > > + * callback. > > > + * > > > + * Returns the kernel virtual address. > > > + */ > > > void *drm_gem_dmabuf_vmap(struct dma_buf *dma_buf) > > > { > > > struct drm_gem_object *obj = dma_buf->priv; @@ -360,6 +410,14 > @@ > > > void *drm_gem_dmabuf_vmap(struct dma_buf *dma_buf) > > > } > > > EXPORT_SYMBOL(drm_gem_dmabuf_vmap); > > > +/** > > > + * drm_gem_dmabuf_vunmap - dma_buf vunmap implementation for > GEM > > > + * @dma_buf: buffer to be unmapped > > > + * @vaddr: the virtual address of the buffer > > > + * > > > + * Releases a kernel virtual mapping. This can be used as the > > > + * &dma_buf_ops.vunmap callback. > > > + */ > > > void drm_gem_dmabuf_vunmap(struct dma_buf *dma_buf, void > *vaddr) > > > { > > > struct drm_gem_object *obj = dma_buf->priv; @@ -369,6 +427,11 > @@ > > > void drm_gem_dmabuf_vunmap(struct dma_buf *dma_buf, void *vaddr) > > > } > > > EXPORT_SYMBOL(drm_gem_dmabuf_vunmap); > > > +/** > > > + * drm_gem_dmabuf_kmap_atomic - map_atomic implementation for > GEM > > > + * > > > + * Not implemented. This can be used as the > &dma_buf_ops.map_atomic callback. > > > + */ > > > void *drm_gem_dmabuf_kmap_atomic(struct dma_buf *dma_buf, > > > unsigned long page_num) > > > { > > > @@ -376,6 +439,11 @@ void *drm_gem_dmabuf_kmap_atomic(struct > dma_buf *dma_buf, > > > } > > > EXPORT_SYMBOL(drm_gem_dmabuf_kmap_atomic); > > > +/** > > > + * drm_gem_dmabuf_kunmap_atomic - unmap_atomic > implementation for > > > +GEM > > > + * > > > + * Not implemented. This can be used as the > &dma_buf_ops.unmap_atomic callback. > > > + */ > > > void drm_gem_dmabuf_kunmap_atomic(struct dma_buf *dma_buf, > > > unsigned long page_num, void *addr) > > > { > > > @@ -383,12 +451,22 @@ void drm_gem_dmabuf_kunmap_atomic(struct > dma_buf *dma_buf, > > > } > > > EXPORT_SYMBOL(drm_gem_dmabuf_kunmap_atomic); > > > +/** > > > + * drm_gem_dmabuf_kmap - map implementation for GEM > > > + * > > > + * Not implemented. This can be used as the &dma_buf_ops.map > callback. > > > + */ > > > void *drm_gem_dmabuf_kmap(struct dma_buf *dma_buf, unsigned > long page_num) > > > { > > > return NULL; > > > } > > > EXPORT_SYMBOL(drm_gem_dmabuf_kmap); > > > +/** > > > + * drm_gem_dmabuf_kunmap - unmap implementation for GEM > > > + * > > > + * Not implemented. This can be used as the &dma_buf_ops.unmap > callback. > > > + */ > > > void drm_gem_dmabuf_kunmap(struct dma_buf *dma_buf, unsigned > long page_num, > > > void *addr) > > > { > > > @@ -396,6 +474,16 @@ void drm_gem_dmabuf_kunmap(struct > dma_buf *dma_buf, unsigned long page_num, > > > } > > > EXPORT_SYMBOL(drm_gem_dmabuf_kunmap); > > > +/** > > > + * drm_gem_dmabuf_mmap - dma_buf mmap implementation for > GEM > > > + * @dma_buf: buffer to be mapped > > > + * @vma: virtual address range > > > + * > > > + * Provides memory mapping for the buffer. This can be used as the > > > + * &dma_buf_ops.mmap callback. > > > + * > > > + * Returns 0 on success or a negative error code on failure. > > > + */ > > > int drm_gem_dmabuf_mmap(struct dma_buf *dma_buf, struct > vm_area_struct *vma) > > > { > > > struct drm_gem_object *obj = dma_buf->priv; > > > > _______________________________________________ > > dri-devel mailing list > > dri-devel@xxxxxxxxxxxxxxxxxxxxx > > https://lists.freedesktop.org/mailman/listinfo/dri-devel > > -- > Daniel Vetter > Software Engineer, Intel Corporation > http://blog.ffwll.ch _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
