[igt-dev] [PATCH i-g-t 2/6] kms_writeback: Add initial writeback tests
Maarten Lankhorst
maarten.lankhorst at linux.intel.com
Mon Jun 25 12:48:47 UTC 2018
Op 01-03-18 om 18:38 schreef Liviu Dudau:
> From: Brian Starkey <brian.starkey at arm.com>
>
> Add tests for the WRITEBACK_PIXEL_FORMATS, WRITEBACK_OUT_FENCE_PTR and
> WRITEBACK_FB_ID properties on writeback connectors, ensuring their
> behaviour is correct.
>
> Signed-off-by: Brian Starkey <brian.starkey at arm.com>
> ---
> lib/igt_kms.c | 7 +-
> lib/igt_kms.h | 8 ++
> tests/Makefile.sources | 1 +
> tests/kms_writeback.c | 352 +++++++++++++++++++++++++++++++++++++++++++++++++
> tests/meson.build | 1 +
> 5 files changed, 365 insertions(+), 4 deletions(-)
> create mode 100644 tests/kms_writeback.c
>
> diff --git a/lib/igt_kms.c b/lib/igt_kms.c
> index 00d9d2e2..d558c1b8 100644
> --- a/lib/igt_kms.c
> +++ b/lib/igt_kms.c
> @@ -2267,8 +2267,7 @@ static uint32_t igt_plane_get_fb_id(igt_plane_t *plane)
> /*
> * Add position and fb changes of a plane to the atomic property set
> */
> -static void
> -igt_atomic_prepare_plane_commit(igt_plane_t *plane, igt_pipe_t *pipe,
> +void igt_atomic_prepare_plane_commit(igt_plane_t *plane, igt_pipe_t *pipe,
> drmModeAtomicReq *req)
> {
> igt_display_t *display = pipe->display;
> @@ -2878,7 +2877,7 @@ igt_pipe_obj_replace_prop_blob(igt_pipe_t *pipe, enum igt_atomic_crtc_properties
> /*
> * Add crtc property changes to the atomic property set
> */
> -static void igt_atomic_prepare_crtc_commit(igt_pipe_t *pipe_obj, drmModeAtomicReq *req)
> +void igt_atomic_prepare_crtc_commit(igt_pipe_t *pipe_obj, drmModeAtomicReq *req)
> {
> int i;
>
> @@ -2902,7 +2901,7 @@ static void igt_atomic_prepare_crtc_commit(igt_pipe_t *pipe_obj, drmModeAtomicRe
> /*
> * Add connector property changes to the atomic property set
> */
> -static void igt_atomic_prepare_connector_commit(igt_output_t *output, drmModeAtomicReq *req)
> +void igt_atomic_prepare_connector_commit(igt_output_t *output, drmModeAtomicReq *req)
> {
>
> int i;
> diff --git a/lib/igt_kms.h b/lib/igt_kms.h
> index 59ccc4c6..f38fd0a0 100644
> --- a/lib/igt_kms.h
> +++ b/lib/igt_kms.h
> @@ -581,6 +581,12 @@ extern void igt_output_replace_prop_blob(igt_output_t *output,
> enum igt_atomic_connector_properties prop,
> const void *ptr, size_t length);
>
> +void igt_atomic_prepare_plane_commit(igt_plane_t *plane, igt_pipe_t *pipe,
> + drmModeAtomicReq *req);
> +
> +
> +void igt_atomic_prepare_crtc_commit(igt_pipe_t *pipe_obj, drmModeAtomicReq *req);
> +
> /**
> * igt_pipe_obj_has_prop:
> * @pipe: Pipe to check.
> @@ -670,6 +676,8 @@ extern void igt_pipe_obj_replace_prop_blob(igt_pipe_t *pipe,
>
> void igt_pipe_refresh(igt_display_t *display, enum pipe pipe, bool force);
>
> +void igt_atomic_prepare_connector_commit(igt_output_t *output, drmModeAtomicReq *req);
> +
> void igt_enable_connectors(void);
> void igt_reset_connectors(void);
Please don't..
> diff --git a/tests/Makefile.sources b/tests/Makefile.sources
> index 23f859be..9cfa474d 100644
> --- a/tests/Makefile.sources
> +++ b/tests/Makefile.sources
> @@ -212,6 +212,7 @@ TESTS_progs = \
> kms_tv_load_detect \
> kms_universal_plane \
> kms_vblank \
> + 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..d922213d
> --- /dev/null
> +++ b/tests/kms_writeback.c
> @@ -0,0 +1,352 @@
> +/*
> + * (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"
> +
> +/* We need to define these ourselves until we get an updated libdrm */
> +#ifndef DRM_MODE_CONNECTOR_WRITEBACK
> +#define DRM_MODE_CONNECTOR_WRITEBACK 18
> +#endif
> +
> +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;
> + uint64_t tiling = igt_fb_mod_to_tiling(0);
> + int width, height, ret;
> + 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);
Could we perhaps update igt_output_is_connected to always return true when mode override
is set, so we don't have to force enable the connector?
> + width = override_mode.hdisplay;
> + height = override_mode.vdisplay;
> +
> + ret = igt_create_fb(display->drm_fd, width, height, DRM_FORMAT_XRGB8888,
> + tiling, &input_fb);
> + igt_assert(ret >= 0);
> +
> + ret = igt_create_fb(display->drm_fd, width, height, writeback_format,
> + tiling, &output_fb);
> + igt_assert(ret >= 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;
> +
> + kmstest_force_connector(display->drm_fd, output->config.connector, FORCE_CONNECTOR_ON);
> +
> + 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);
> + }
> +
> + return NULL;
> +}
> +
> +static void check_writeback_fb_id(igt_output_t *output)
> +{
> + bool found;
> + uint64_t check_fb_id;
> +
> + found = kmstest_get_property(output->display->drm_fd, output->id,
> + DRM_MODE_OBJECT_CONNECTOR,
> + igt_connector_prop_names[IGT_CONNECTOR_WRITEBACK_FB_ID],
> + NULL, &check_fb_id, NULL);
> + igt_assert(found && (check_fb_id == 0));
> +}
> +
> +static int do_writeback_test(igt_output_t *output, uint32_t flags,
> + uint32_t fb_id, int32_t *out_fence_ptr,
> + bool ptr_valid)
> +{
> + int ret;
> + enum pipe pipe;
> + drmModeAtomicReq *req;
> + igt_display_t *display = output->display;
> + struct kmstest_connector_config *config = &output->config;
> +
> + req = drmModeAtomicAlloc();
> + drmModeAtomicSetCursor(req, 0);
> +
> + for_each_pipe(display, pipe) {
> + igt_pipe_t *pipe_obj = &display->pipes[pipe];
> + igt_plane_t *plane;
> +
> + /*
> + * Add CRTC Properties to the property set
> + */
> + igt_atomic_prepare_crtc_commit(pipe_obj, req);
> +
> + for_each_plane_on_pipe(display, pipe, plane) {
> + igt_atomic_prepare_plane_commit(plane, pipe_obj, req);
> + }
> + }
> +
> + igt_assert_lt(0, drmModeAtomicAddProperty(req, output->config.connector->connector_id,
> + output->props[IGT_CONNECTOR_CRTC_ID],
> + config->crtc->crtc_id));
igt_output_set_pipe() ?
Or failing that, igt_output_set_property(output, IGT_CONNECTOR_CRTC_ID);
> + igt_assert_lt(0, drmModeAtomicAddProperty(req, output->config.connector->connector_id,
> + output->props[IGT_CONNECTOR_WRITEBACK_FB_ID],
> + fb_id));
igt_output_set_property(output, IGT_CONNECTOR_FB_ID); or the convenience function from v1.. which also saves you from having to do the call below.
I would really keep all the logic for the atomic properties internal, please don't override igt_display_commit_atomic.. we've made it too easy to set properties to anything you want.
:)
~Maarten
> + igt_assert_lt(0, drmModeAtomicAddProperty(req, output->config.connector->connector_id,
> + output->props[IGT_CONNECTOR_WRITEBACK_OUT_FENCE_PTR],
> + (uint64_t)out_fence_ptr));
> +
> + if (ptr_valid)
> + *out_fence_ptr = 0;
> +
> + ret = drmModeAtomicCommit(display->drm_fd, req, flags, NULL);
> +
> + if (ptr_valid && (ret || (flags & DRM_MODE_ATOMIC_TEST_ONLY)))
> + igt_assert(*out_fence_ptr == -1);
> +
> + drmModeAtomicFree(req);
> +
> + /* WRITEBACK_FB_ID must always read as zero */
> + check_writeback_fb_id(output);
> +
> + return ret;
> +}
> +
> +static void invalid_out_fence(igt_output_t *output, igt_fb_t *valid_fb, igt_fb_t *invalid_fb)
> +{
> + int i, ret;
> + int32_t out_fence;
> + struct {
> + uint32_t fb_id;
> + bool ptr_valid;
> + int32_t *out_fence_ptr;
> + } invalid_tests[] = {
> + {
> + /* No output buffer, but the WRITEBACK_OUT_FENCE_PTR set. */
> + .fb_id = 0,
> + .ptr_valid = true,
> + .out_fence_ptr = &out_fence,
> + },
> + {
> + /* Invalid output buffer. */
> + .fb_id = invalid_fb->fb_id,
> + .ptr_valid = true,
> + .out_fence_ptr = &out_fence,
> + },
> + {
> + /* Invalid WRITEBACK_OUT_FENCE_PTR. */
> + .fb_id = valid_fb->fb_id,
> + .ptr_valid = false,
> + .out_fence_ptr = (int32_t *)0x8,
> + },
> + };
> +
> + for (i = 0; i < ARRAY_SIZE(invalid_tests); i++) {
> + ret = do_writeback_test(output, DRM_MODE_ATOMIC_ALLOW_MODESET,
> + invalid_tests[i].fb_id,
> + invalid_tests[i].out_fence_ptr,
> + invalid_tests[i].ptr_valid);
> + igt_assert(ret != 0);
> + }
> +}
> +
> +static void writeback_fb_id(igt_output_t *output, igt_fb_t *valid_fb, igt_fb_t *invalid_fb)
> +{
> +
> + int ret;
> +
> + /* Valid output buffer */
> + ret = do_writeback_test(output, DRM_MODE_ATOMIC_ALLOW_MODESET,
> + valid_fb->fb_id, NULL, false);
> + igt_assert(ret == 0);
> +
> + /* Invalid object for WRITEBACK_FB_ID */
> + ret = do_writeback_test(output, DRM_MODE_ATOMIC_ALLOW_MODESET,
> + output->id, NULL, false);
> + igt_assert(ret == -EINVAL);
> +
> + /* Zero WRITEBACK_FB_ID */
> + ret = do_writeback_test(output, DRM_MODE_ATOMIC_ALLOW_MODESET,
> + 0, NULL, false);
> + igt_assert(ret == 0);
> +}
> +
> +igt_main
> +{
> + igt_display_t display;
> + igt_output_t *output;
> + igt_plane_t *plane;
> + igt_fb_t input_fb;
> + drmModeModeInfo mode;
> + int ret;
> +
> + memset(&display, 0, sizeof(display));
> +
> + igt_fixture {
> + display.drm_fd = drm_open_driver_master(DRIVER_ANY);
> + igt_assert_fd(display.drm_fd);
> +
> + kmstest_set_vt_graphics_mode();
> +
> + igt_display_init(&display, display.drm_fd);
> +
> + igt_require(display.is_atomic);
> +
> + output = kms_writeback_get_output(&display);
> + igt_require(output);
> +
> + if (output->use_override_mode)
> + memcpy(&mode, &output->override_mode, sizeof(mode));
> + else
> + memcpy(&mode, &output->config.default_mode, sizeof(mode));
> +
> + plane = igt_output_get_plane_type(output, DRM_PLANE_TYPE_PRIMARY);
> + igt_require(plane);
> +
> + ret = igt_create_fb(display.drm_fd, mode.hdisplay,
> + mode.vdisplay,
> + DRM_FORMAT_XRGB8888,
> + igt_fb_mod_to_tiling(0),
> + &input_fb);
> + igt_assert(ret >= 0);
> + igt_plane_set_fb(plane, &input_fb);
> + }
> +
> + igt_subtest("writeback-pixel-formats") {
> + drmModePropertyBlobRes *formats_blob = get_writeback_formats_blob(output);
> + const char *valid_chars = "0123456 ABCGNRUXY";
> + unsigned int i;
> + char *c;
> +
> + /*
> + * We don't have a comprehensive list of formats, so just check
> + * that the blob length is sensible and that it doesn't contain
> + * any outlandish characters
> + */
> + igt_assert(!(formats_blob->length % 4));
> + c = formats_blob->data;
> + for (i = 0; i < formats_blob->length; i++)
> + igt_assert_f(strchr(valid_chars, c[i]),
> + "Unexpected character %c\n", c[i]);
> + }
> +
> + igt_subtest("writeback-invalid-out-fence") {
> + igt_fb_t invalid_fb;
> + ret = igt_create_fb(display.drm_fd, mode.hdisplay / 2,
> + mode.vdisplay / 2,
> + DRM_FORMAT_XRGB8888,
> + igt_fb_mod_to_tiling(0),
> + &invalid_fb);
> + igt_require(ret > 0);
> +
> + invalid_out_fence(output, &input_fb, &invalid_fb);
> +
> + igt_remove_fb(display.drm_fd, &invalid_fb);
> + }
> +
> + igt_subtest("writeback-fb-id") {
> + igt_fb_t output_fb;
> + ret = igt_create_fb(display.drm_fd, mode.hdisplay, mode.vdisplay,
> + DRM_FORMAT_XRGB8888,
> + igt_fb_mod_to_tiling(0),
> + &output_fb);
> + igt_require(ret > 0);
> +
> + writeback_fb_id(output, &input_fb, &output_fb);
> +
> + igt_remove_fb(display.drm_fd, &output_fb);
> + }
> +
> + igt_fixture {
> + igt_remove_fb(display.drm_fd, &input_fb);
> + igt_display_fini(&display);
> + }
> +}
> diff --git a/tests/meson.build b/tests/meson.build
> index 2a1e6f19..a08e782b 100644
> --- a/tests/meson.build
> +++ b/tests/meson.build
> @@ -188,6 +188,7 @@ test_progs = [
> 'kms_tv_load_detect',
> 'kms_universal_plane',
> 'kms_vblank',
> + 'kms_writeback',
> 'meta_test',
> 'perf',
> 'pm_backlight',
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