On Mon, Oct 21, 2019 at 09:59:17PM -0300, Brian Starkey wrote:
> Add tests for the WRITEBACK_PIXEL_FORMATS, WRITEBACK_OUT_FENCE_PTR and
> WRITEBACK_FB_ID properties on writeback connectors, ensuring their
> behaviour is correct.
>
> V6: Simon Ser
> - Add igt documentation with igt_describe and IGT_TEST_DESCRIPTION
> - Drop kmstest_force_connector with FORCE_CONNECTOR_ON in
> kms_writeback_get_output since userspace won't do this operation
> - Add an igt_debug statement in case we don't use writeback output
> - Drop flags parameter from do_writeback_test
> - Remove do_writeback_test "igt_assert(*out_fence_ptr == -1)" after
> igt_display_try_commit_atomic
> - Rename writeback_fb_id to writeback_test_fb
> - Rework writeback_test_fb for checking buffer
> - Move some tests from invalid_out_fence to writeback_test_fb
> - Replace ret != 0 checking by ret == -EINVAL after invoke
> do_writeback_test
> - Assert on igt_output_get_plane_type()
> - Replace igt_fb_mod_to_tiling to DRM_FORMAT_MOD_LINEAR
> - Rename tests
> - Replace int ret by unsigned int fd_id when calling igt_create_fb
>
> Signed-off-by: Brian Starkey <brian.starkey@xxxxxxx>
> [rebased and updated do_writeback_test() function to address feedback]
> Signed-off-by: Liviu Dudau <liviu.dudau@xxxxxxx>
> [rebased and updated the patch to address feedback]
> Signed-off-by: Rodrigo Siqueira <rodrigosiqueiramelo@xxxxxxxxx>
> ---
> tests/Makefile.sources | 1 +
> tests/kms_writeback.c | 290 +++++++++++++++++++++++++++++++++++++++++
> tests/meson.build | 1 +
> 3 files changed, 292 insertions(+)
> create mode 100644 tests/kms_writeback.c
>
> diff --git a/tests/Makefile.sources b/tests/Makefile.sources
> index 343be050..331270ae 100644
> --- a/tests/Makefile.sources
> +++ b/tests/Makefile.sources
> @@ -81,6 +81,7 @@ TESTS_progs = \
> kms_universal_plane \
> kms_vblank \
> kms_vrr \
> + kms_writeback \
> meta_test \
> perf \
> perf_pmu \
> diff --git a/tests/kms_writeback.c b/tests/kms_writeback.c
> new file mode 100644
> index 00000000..a373ec4d
> --- /dev/null
> +++ b/tests/kms_writeback.c
> @@ -0,0 +1,290 @@
> +/*
> + * (C) COPYRIGHT 2017 ARM Limited. All rights reserved.
> + *
> + * Permission is hereby granted, free of charge, to any person obtaining a
> + * copy of this software and associated documentation files (the "Software"),
> + * to deal in the Software without restriction, including without limitation
> + * the rights to use, copy, modify, merge, publish, distribute, sublicense,
> + * and/or sell copies of the Software, and to permit persons to whom the
> + * Software is furnished to do so, subject to the following conditions:
> + *
> + * The above copyright notice and this permission notice (including the next
> + * paragraph) shall be included in all copies or substantial portions of the
> + * Software.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
> + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
> + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
> + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
> + * IN THE SOFTWARE.
> + *
> + */
> +
> +#include <errno.h>
> +#include <stdbool.h>
> +#include <stdio.h>
> +#include <string.h>
> +
> +#include "igt.h"
> +#include "igt_core.h"
> +#include "igt_fb.h"
> +
> +IGT_TEST_DESCRIPTION("Exercise writeback feature.");
> +
> +static drmModePropertyBlobRes *get_writeback_formats_blob(igt_output_t *output)
> +{
> + drmModePropertyBlobRes *blob = NULL;
> + uint64_t blob_id;
> + int ret;
> +
> + ret = kmstest_get_property(output->display->drm_fd,
> + output->config.connector->connector_id,
> + DRM_MODE_OBJECT_CONNECTOR,
> + igt_connector_prop_names[IGT_CONNECTOR_WRITEBACK_PIXEL_FORMATS],
> + NULL, &blob_id, NULL);
> + if (ret)
> + blob = drmModeGetPropertyBlob(output->display->drm_fd, blob_id);
> +
> + igt_assert(blob);
> +
> + return blob;
> +}
> +
> +static bool check_writeback_config(igt_display_t *display, igt_output_t *output)
> +{
> + igt_fb_t input_fb, output_fb;
> + igt_plane_t *plane;
> + uint32_t writeback_format = DRM_FORMAT_XRGB8888;
> + int width, height, ret;
> + unsigned int fb_id;
> + drmModeModeInfo override_mode = {
> + .clock = 25175,
> + .hdisplay = 640,
> + .hsync_start = 656,
> + .hsync_end = 752,
> + .htotal = 800,
> + .hskew = 0,
> + .vdisplay = 480,
> + .vsync_start = 490,
> + .vsync_end = 492,
> + .vtotal = 525,
> + .vscan = 0,
> + .vrefresh = 60,
> + .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
> + .name = {"640x480-60"},
> + };
> + igt_output_override_mode(output, &override_mode);
> +
> + width = override_mode.hdisplay;
> + height = override_mode.vdisplay;
> +
> + fb_id = igt_create_fb(display->drm_fd, width, height, DRM_FORMAT_XRGB8888, DRM_FORMAT_MOD_LINEAR, &input_fb);
> + igt_assert(fb_id >= 0);
> +
> + fb_id = igt_create_fb(display->drm_fd, width, height, writeback_format, DRM_FORMAT_MOD_LINEAR, &output_fb);
> + igt_assert(fb_id >= 0);
> +
> + plane = igt_output_get_plane_type(output, DRM_PLANE_TYPE_PRIMARY);
> + igt_plane_set_fb(plane, &input_fb);
> + igt_output_set_writeback_fb(output, &output_fb);
> +
> + ret = igt_display_try_commit_atomic(display, DRM_MODE_ATOMIC_TEST_ONLY |
> + DRM_MODE_ATOMIC_ALLOW_MODESET, NULL);
> + igt_plane_set_fb(plane, NULL);
> + igt_remove_fb(display->drm_fd, &input_fb);
> + igt_remove_fb(display->drm_fd, &output_fb);
> +
> + return !ret;
> +}
> +
> +static igt_output_t *kms_writeback_get_output(igt_display_t *display)
> +{
> + int i;
> +
> + for (i = 0; i < display->n_outputs; i++) {
> + igt_output_t *output = &display->outputs[i];
> + int j;
> +
> + if (output->config.connector->connector_type != DRM_MODE_CONNECTOR_WRITEBACK)
> + continue;
> +
> + for (j = 0; j < igt_display_get_n_pipes(display); j++) {
> + igt_output_set_pipe(output, j);
> +
> + if (check_writeback_config(display, output)) {
> + igt_debug("Using connector %u:%s on pipe %d\n",
> + output->config.connector->connector_id,
> + output->name, j);
> + return output;
> + }
> + }
> +
> + /* Restore any connectors we don't use, so we don't trip on them later */
> + kmstest_force_connector(display->drm_fd, output->config.connector, FORCE_CONNECTOR_UNSPECIFIED);
> + }
> +
> + igt_debug("The device does not enable writeback\n");
> +
> + return NULL;
> +}
> +
> +static void check_writeback_fb_id(igt_output_t *output)
> +{
> + uint64_t check_fb_id;
> +
> + check_fb_id = igt_output_get_prop(output, IGT_CONNECTOR_WRITEBACK_FB_ID);
> + igt_assert(check_fb_id == 0);
> +}
> +
> +static int do_writeback_test(igt_output_t *output, uint32_t fb_id,
> + int32_t *out_fence_ptr, bool ptr_valid)
> +{
> + int ret;
> + int flags = DRM_MODE_ATOMIC_ALLOW_MODESET;
> + igt_display_t *display = output->display;
> + struct kmstest_connector_config *config = &output->config;
> +
> + igt_output_set_prop_value(output, IGT_CONNECTOR_CRTC_ID, config->crtc->crtc_id);
> + igt_output_set_prop_value(output, IGT_CONNECTOR_WRITEBACK_FB_ID, fb_id);
> + igt_output_set_prop_value(output, IGT_CONNECTOR_WRITEBACK_OUT_FENCE_PTR, (uint64_t)out_fence_ptr);
On ARM (32bits), this cast creates a compilation error since the
pointer size isn't an uint64_t.
Maxime
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