Reports the size of the virtgpu framebuffer to userspace and installs the deferred I/O handlers so that userspace can mmap() and write to it.
Signed-off-by: Joshua Watt JPEWhacker@gmail.com --- drivers/gpu/drm/virtio/virtgpu_fb.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/virtio/virtgpu_fb.c b/drivers/gpu/drm/virtio/virtgpu_fb.c index fb1cc8b2f119..9f44c8d27c64 100644 --- a/drivers/gpu/drm/virtio/virtgpu_fb.c +++ b/drivers/gpu/drm/virtio/virtgpu_fb.c @@ -266,11 +266,15 @@ static int virtio_gpufb_create(struct drm_fb_helper *helper, info->fbops = &virtio_gpufb_ops; info->pixmap.flags = FB_PIXMAP_SYSTEM;
+ info->fix.smem_start = 0; + info->fix.smem_len = size; + info->screen_buffer = obj->vmap; info->screen_size = obj->gem_base.size; drm_fb_helper_fill_fix(info, fb->pitches[0], fb->format->depth); drm_fb_helper_fill_var(info, &vfbdev->helper, sizes->fb_width, sizes->fb_height); + drm_fb_helper_defio_init(helper);
info->fix.mmio_start = 0; info->fix.mmio_len = 0;