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Commit 497a3ff9 authored by Jakob Bornecrantz's avatar Jakob Bornecrantz Committed by Dave Airlie
Browse files

vmwgfx: Add comments for buffer pinning code 



Signed-off-by: default avatarJakob Bornecrantz <jakob@vmware.com>
Reviewed-by: default avatarThomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent de12d44f

drivers/gpu/drm/vmwgfx/vmwgfx_kms.c

+10 −0
Original line number Original line Diff line number Diff line
@@ -706,6 +706,10 @@ static struct drm_framebuffer_funcs vmw_framebuffer_dmabuf_funcs = { 
	.create_handle = vmw_framebuffer_create_handle,

	.create_handle = vmw_framebuffer_create_handle,

};

};





/**

 * We need to reserve the start of vram because the host might

 * scribble to it at mode changes, so we need to reserve it.

 */

static int vmw_surface_dmabuf_pin(struct vmw_framebuffer *vfb)

static int vmw_surface_dmabuf_pin(struct vmw_framebuffer *vfb)

{

{

	struct vmw_private *dev_priv = vmw_priv(vfb->base.dev);

	struct vmw_private *dev_priv = vmw_priv(vfb->base.dev);
@@ -729,6 +733,9 @@ static int vmw_surface_dmabuf_pin(struct vmw_framebuffer *vfb) 
	return ret;

	return ret;

}

}





/**

 * See vmw_surface_dmabuf_pin.

 */

static int vmw_surface_dmabuf_unpin(struct vmw_framebuffer *vfb)

static int vmw_surface_dmabuf_unpin(struct vmw_framebuffer *vfb)

{

{

	struct ttm_buffer_object *bo;

	struct ttm_buffer_object *bo;
@@ -745,6 +752,9 @@ static int vmw_surface_dmabuf_unpin(struct vmw_framebuffer *vfb) 
	return 0;

	return 0;

}

}





/**

 * Pin the dmabuffer to the start of vram.

 */

static int vmw_framebuffer_dmabuf_pin(struct vmw_framebuffer *vfb)

static int vmw_framebuffer_dmabuf_pin(struct vmw_framebuffer *vfb)

{

{

	struct vmw_private *dev_priv = vmw_priv(vfb->base.dev);

	struct vmw_private *dev_priv = vmw_priv(vfb->base.dev);