Op 09-03-17 om 10:19 schreef Mika Kahola:
> We need to make sure that TEST_ONLY really only touches the free-standing
> state objects and nothing else. Test approach here is the following:
>
> - Create a config and submit it with TEST_ONLY.
> - do dpms off/on cycle with the current config to reconfigure hw
> - read back all legacy state to make sure none of that is clobbered
>
> v2: use ATOMIC_RELAX_NONE instead of CRTC_RELAX_MODE when checking crtc or
> plane state (Maarten)
> rename subtest and function that executes this test (Maarten)
>
> Signed-off-by: Mika Kahola <mika.kah...@intel.com>
> ---
> tests/kms_atomic.c | 82
> ++++++++++++++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 82 insertions(+)
>
> diff --git a/tests/kms_atomic.c b/tests/kms_atomic.c
> index d6273f4..6375fed 100644
> --- a/tests/kms_atomic.c
> +++ b/tests/kms_atomic.c
> @@ -831,6 +831,25 @@ static uint32_t plane_get_igt_format(struct
> kms_atomic_plane_state *plane)
> return ret;
> }
>
> +static void
> +set_dpms(int fd, int mode)
> +{
> + int i;
> + drmModeConnector *connector;
> + uint32_t id;
> + drmModeRes *resources = drmModeGetResources(fd);
> +
> + for (i = 0; i < resources->count_connectors; i++) {
> + id = resources->connectors[i];
> +
> + connector = drmModeGetConnectorCurrent(fd, id);
> +
> + kmstest_set_connector_dpms(fd, connector, mode);
> +
> + drmModeFreeConnector(connector);
> + }
> +}
> +
> static void plane_overlay(struct kms_atomic_crtc_state *crtc,
> struct kms_atomic_plane_state *plane_old)
> {
> @@ -930,6 +949,57 @@ static void plane_primary(struct kms_atomic_crtc_state
> *crtc,
> drmModeAtomicFree(req);
> }
>
> +/* test to ensure that DRM_MODE_ATOMIC_TEST_ONLY really only touches the
> + * free-standing state objects and nothing else.
> + */
> +static void test_only(struct kms_atomic_crtc_state *crtc,
> + struct kms_atomic_plane_state *plane_old)
> +{
> + struct drm_mode_modeinfo *mode = crtc->mode.data;
> + struct kms_atomic_plane_state plane = *plane_old;
> + uint32_t format = plane_get_igt_format(&plane);
> + drmModeAtomicReq *req = drmModeAtomicAlloc();
> + struct igt_fb fb;
> + int ret;
> +
> + igt_require(format != 0);
> +
> + plane.src_x = 0;
> + plane.src_y = 0;
> + plane.src_w = mode->hdisplay << 16;
> + plane.src_h = mode->vdisplay << 16;
> + plane.crtc_x = 0;
> + plane.crtc_y = 0;
> + plane.crtc_w = mode->hdisplay;
> + plane.crtc_h = mode->vdisplay;
> + plane.crtc_id = crtc->obj;
> + plane.fb_id = igt_create_pattern_fb(plane.state->desc->fd,
> + plane.crtc_w, plane.crtc_h,
> + format, I915_TILING_NONE, &fb);
> +
> + drmModeAtomicSetCursor(req, 0);
> + crtc_populate_req(crtc, req);
> + plane_populate_req(&plane, req);
> + ret = drmModeAtomicCommit(crtc->state->desc->fd, req,
> + DRM_MODE_ATOMIC_TEST_ONLY, NULL);
> +
> + igt_assert_eq(ret, 0);
> +
> + /* go through dpms off/on cycle */
> + set_dpms(crtc->state->desc->fd, DRM_MODE_DPMS_OFF);
> + set_dpms(crtc->state->desc->fd, DRM_MODE_DPMS_ON);
Could probably just set the crtc's active property, same effect with less code.
Either way.
Reviewed-by: Maarten Lankhorst <maarten.lankho...@linux.intel.com>
> + /* check the state */
> + crtc_check_current_state(crtc, plane_old, ATOMIC_RELAX_NONE);
> + plane_check_current_state(plane_old, ATOMIC_RELAX_NONE);
> +
> + /* Re-enable the plane through the legacy CRTC/primary-plane API, and
> + * verify through atomic. */
> + crtc_commit_legacy(crtc, plane_old, CRTC_RELAX_MODE);
> +
> + drmModeAtomicFree(req);
> +}
> +
> static void plane_cursor(struct kms_atomic_crtc_state *crtc,
> struct kms_atomic_plane_state *plane_old)
> {
> @@ -1427,6 +1497,18 @@ igt_main
> atomic_state_free(scratch);
> }
>
> + igt_subtest("test_only") {
> + struct kms_atomic_state *scratch = atomic_state_dup(current);
> + struct kms_atomic_crtc_state *crtc = find_crtc(scratch, true);
> + struct kms_atomic_plane_state *plane =
> + find_plane(scratch, PLANE_TYPE_PRIMARY, crtc);
> +
> + igt_require(crtc);
> + igt_require(plane);
> + test_only(crtc, plane);
> + atomic_state_free(scratch);
> + }
> +
> igt_subtest("plane_cursor_legacy") {
> struct kms_atomic_state *scratch = atomic_state_dup(current);
> struct kms_atomic_crtc_state *crtc = find_crtc(scratch, true);
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