[PATCH i-g-t v2 3/7] kms_writeback: Add initial writeback tests

From: Brian Starkey brian.starkey@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@arm.com --- lib/igt_kms.c | 6 +- lib/igt_kms.h | 7 + tests/Makefile.sources | 1 + tests/kms_writeback.c | 371 +++++++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 382 insertions(+), 3 deletions(-) create mode 100644 tests/kms_writeback.c

diff --git a/lib/igt_kms.c b/lib/igt_kms.c index 02e2b274..aae32202 100644 --- a/lib/igt_kms.c +++ b/lib/igt_kms.c @@ -2137,7 +2137,7 @@ static uint32_t igt_plane_get_fb_gem_handle(igt_plane_t *plane) /* * Add position and fb changes of a plane to the atomic property set */ -static void +void igt_atomic_prepare_plane_commit(igt_plane_t *plane, igt_pipe_t *pipe, drmModeAtomicReq *req) { @@ -2515,7 +2515,7 @@ igt_pipe_replace_blob(igt_pipe_t *pipe, uint64_t *blob, void *ptr, size_t length /* * 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) { if (pipe_obj->background_changed) igt_atomic_populate_crtc_req(req, pipe_obj, IGT_CRTC_BACKGROUND, pipe_obj->background); @@ -2567,7 +2567,7 @@ 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) {

struct kmstest_connector_config *config = &output->config; diff --git a/lib/igt_kms.h b/lib/igt_kms.h index ce9a35ef..ab8ec764 100644 --- a/lib/igt_kms.h +++ b/lib/igt_kms.h @@ -533,6 +533,8 @@ static inline bool igt_output_is_connected(igt_output_t *output) #define igt_atomic_populate_plane_req(req, plane, prop, value) \ igt_assert_lt(0, drmModeAtomicAddProperty(req, plane->drm_plane->plane_id,\ plane->atomic_props_plane[prop], value)) +void igt_atomic_prepare_plane_commit(igt_plane_t *plane, igt_pipe_t *pipe, + drmModeAtomicReq *req);

/** * igt_atomic_populate_crtc_req: @@ -544,6 +546,9 @@ static inline bool igt_output_is_connected(igt_output_t *output) #define igt_atomic_populate_crtc_req(req, pipe, prop, value) \ igt_assert_lt(0, drmModeAtomicAddProperty(req, pipe->crtc_id,\ pipe->atomic_props_crtc[prop], value)) + +void igt_atomic_prepare_crtc_commit(igt_pipe_t *pipe_obj, drmModeAtomicReq *req); + /** * igt_atomic_populate_connector_req: * @req: A pointer to drmModeAtomicReq @@ -555,6 +560,8 @@ static inline bool igt_output_is_connected(igt_output_t *output) igt_assert_lt(0, drmModeAtomicAddProperty(req, output->config.connector->connector_id,\ output->config.atomic_props_connector[prop], value))

+void igt_atomic_prepare_connector_commit(igt_output_t *output, drmModeAtomicReq *req); + void igt_enable_connectors(void); void igt_reset_connectors(void);

diff --git a/tests/Makefile.sources b/tests/Makefile.sources index 5b98a5a3..7318855d 100644 --- a/tests/Makefile.sources +++ b/tests/Makefile.sources @@ -213,6 +213,7 @@ TESTS_progs = \ kms_tv_load_detect \ kms_universal_plane \ kms_vblank \ + kms_writeback \ meta_test \ perf \ pm_backlight \ diff --git a/tests/kms_writeback.c b/tests/kms_writeback.c new file mode 100644 index 00000000..d2066482 --- /dev/null +++ b/tests/kms_writeback.c @@ -0,0 +1,371 @@ +/* + * (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_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 uint32_t pick_writeback_format(igt_output_t *output) +{ + drmModePropertyBlobRes *wb_formats_blob = get_writeback_formats_blob(output); + const uint32_t *wb_formats, *cairo_formats; + uint32_t format = 0; + int n_cairo_formats, n_wb_formats, i, j; + + igt_get_all_cairo_formats(&cairo_formats, &n_cairo_formats); + + wb_formats = wb_formats_blob->data; + n_wb_formats = wb_formats_blob->length / sizeof(*wb_formats); + for (i = 0; (i < n_wb_formats) && !format; i++) { + for (j = 0; j < n_cairo_formats; j++) { + if (wb_formats[i] == cairo_formats[j]) { + format = wb_formats[i]; + break; + } + } + } + + drmModeFreePropertyBlob(wb_formats_blob); + + igt_assert(format); + return format; +} + +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 = pick_writeback_format(output); + 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); + + 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_atomic_populate_connector_req(req, output, IGT_CONNECTOR_CRTC_ID, config->crtc->crtc_id); + igt_atomic_populate_connector_req(req, output, IGT_CONNECTOR_WRITEBACK_FB_ID, fb_id); + igt_atomic_populate_connector_req(req, output, 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); + } +}