On Wed, Feb 19, 2020 at 02:53:21PM +0100, Nirmoy Das wrote:
> Switch over to GEM VRAM's implementation to retrieve bo->offset
>
> Signed-off-by: Nirmoy Das <nirmoy.das@xxxxxxx>
> ---
> drivers/gpu/drm/bochs/bochs_kms.c | 7 ++++++-
> 1 file changed, 6 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/bochs/bochs_kms.c b/drivers/gpu/drm/bochs/bochs_kms.c
> index 8066d7d370d5..18d2ec34534d 100644
> --- a/drivers/gpu/drm/bochs/bochs_kms.c
> +++ b/drivers/gpu/drm/bochs/bochs_kms.c
> @@ -29,16 +29,21 @@ static void bochs_plane_update(struct bochs_device *bochs,
> struct drm_plane_state *state)
> {
> struct drm_gem_vram_object *gbo;
> + s64 gpu_addr;
>
> if (!state->fb || !bochs->stride)
> return;
>
> gbo = drm_gem_vram_of_gem(state->fb->obj[0]);
> + gpu_addr = drm_gem_vram_offset(gbo);
> + if (WARN_ON_ONCE(gpu_addr < 0))
> + return; /* Bug: we didn't pin the BO to VRAM in prepare_fb. */
That negative errno in gpu_addr from vram helpers is kinda wild.
Reviewed-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
> +
> bochs_hw_setbase(bochs,
> state->crtc_x,
> state->crtc_y,
> state->fb->pitches[0],
> - state->fb->offsets[0] + gbo->bo.offset);
> + state->fb->offsets[0] + gpu_addr);
> bochs_hw_setformat(bochs, state->fb->format);
> }
>
> --
> 2.25.0
>
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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