[PATCH i-g-t 2/2] tests/intel/kms_big_joiner: revamp kms_big_joiner
Joshi, Kunal1
kunal1.joshi at intel.com
Wed Mar 6 10:11:26 UTC 2024
Hello Stan,
On 3/6/2024 3:23 PM, Lisovskiy, Stanislav wrote:
> On Wed, Mar 06, 2024 at 10:55:09AM +0530, Kunal Joshi wrote:
>> big joiner outputs are statically assigned to pipe,
>> rewrite to assign dynamically
>>
>> v2: Don't change license (Bhanu)
>> Add documentation for generate_combinations (Bhanu)
>> Print the pipe name (Bhanu)
>> Remove unwanted commit (Bhanu)
>> Move combine output logic to igt_fixture (Bhanu)
>> split revamp and force joiner (Bhanu)
>>
>> Cc: Karthik B S<karthik.b.s at intel.com>
>> Cc: Bhanuprakash Modem<bhanuprakash.modem at intel.com>
>> Signed-off-by: Kunal Joshi<kunal1.joshi at intel.com>
>> ---
>> tests/intel/kms_big_joiner.c | 391 +++++++++++++++++------------------
>> 1 file changed, 187 insertions(+), 204 deletions(-)
>>
>> diff --git a/tests/intel/kms_big_joiner.c b/tests/intel/kms_big_joiner.c
>> index 28678b958..ba4097d8b 100644
>> --- a/tests/intel/kms_big_joiner.c
>> +++ b/tests/intel/kms_big_joiner.c
>> @@ -43,16 +43,19 @@
>> *
>> * SUBTEST: basic
>> * Description: Verify the basic modeset on big joiner mode on all pipes
>> - *
>> - * SUBTEST: 2x-modeset
>> - * Description: Verify simultaneous modeset on 2 big joiner outputs
>> */
>> -
>> IGT_TEST_DESCRIPTION("Test big joiner");
>>
>> -struct bigjoiner_output {
>> - uint32_t output_id;
>> - drmModeModeInfo mode;
>> +#define MAX_OUTPUTS 256
>> +#define MAX_COMBINATIONS 1000
>> +#define INVALID_TEST_OUTPUT 2
>> +typedef struct {
>> + int combination[MAX_OUTPUTS];
>> +} Combination;
>> +
>> +enum joiner_type {
>> + BIG_JOINER = 1 << 1,
>> + INVALID_JOINER = -1,
>> };
>>
>> typedef struct {
>> @@ -60,273 +63,253 @@ typedef struct {
>> igt_display_t display;
>> struct igt_fb fb;
>> int n_pipes;
>> - enum pipe pipe1;
>> - enum pipe pipe2;
>> - struct bigjoiner_output output[2];
>> + uint64_t big_joiner_outputs[IGT_MAX_PIPES];
>> + uint64_t non_big_joiner_outputs[IGT_MAX_PIPES];
>> + uint64_t combined_outputs[IGT_MAX_PIPES];
>> + int big_joiner_output_count;
>> + int non_big_joiner_output_count;
>> + int combined_output_count;
>> + int output_count;
>> + enum pipe pipe_seq[IGT_MAX_PIPES];
>> } data_t;
>>
>> static int max_dotclock;
>>
>> -static void test_invalid_modeset(data_t *data)
>> +/*
>> + * The generate_combinations function generates combinations of pipe allocations
>> + * for a given number of outputs
>> + *
>> + * @output_count: Number of outputs to allocate pipes for.
>> + * @pipe_count: Total number of available pipes.
>> + * @pipes_per_output: Number of pipes to be allocated for a single output.
>> + * @combinations: Array to store generated combinations.
>> + * @num_combinations: Pointer to a variable that stores the number of generated combinations.
>> + *
>> + * Example (output_count=2, pipe_count=4, pipes_per_output=2):
>> + * Combination 1: 0 2
>> + * Combination 2: 1 3
> I think this might be a bit overcomplicated - just for your information, we can't deliberately
> choose which pipes can be used for bigjoiner. On some platforms even only certain pipes, can be
> used for bigjoiner.
> Moreover the way how driver decides, which pipes are going to be used for bigjoiner is basically
> this code in intel_dp.c:
>
> if (intel_dp_need_bigjoiner(intel_dp, adjusted_mode->crtc_hdisplay,
> adjusted_mode->crtc_clock))
> pipe_config->bigjoiner_pipes = GENMASK(crtc->pipe + 1, crtc->pipe);
>
> Means if you try to do a modeset with resolution > 5K or exceed max_dot_clock on crtc->pipe,
> then _always_ pipe + 1, going to be used for bigjoiner.
>
>
> Stan
>
Thanks for the inputs,
Goal here is to try various combination possible,
Suppose a platform supports 5 pipes(A-E) and we have 1 bigjoiner output
(DP-1) then we want to try
DP-1 on PIPE_A
DP-1 on PIPE_B
DP-1 on PIPE_C
DP-1 on PIPE_D
Suppose a platform supports 5 pipes(A-E) and we have 2 bigjoiner output
(DP-1, DP-2) then we want to try
DP-1 on PIPE_A and DP-2 on PIPE_C
DP-1 on PIPE_B and DP-2 on PIPE_D And so on, Going forward this will be
useful we introduce any feature which can allow having more pipes per
output also.
>
>> +*/
>> +static void generate_combinations(int output_count, int pipe_count,
>> + int pipes_per_output,
>> + Combination combinations[MAX_COMBINATIONS],
>> + uint64_t *num_combinations)
>> {
>> - igt_output_t *output;
>> - igt_display_t *display = &data->display;
>> - int ret;
>> + int i, index;
>> + int current_combination[MAX_OUTPUTS];
>>
>> - igt_info("Bigjoiner test on ");
>> - for_each_connected_output(display, output){
>> - enum pipe p = output->pending_pipe;
>> - drmModeModeInfo *mode;
>> - igt_pipe_t *pipe;
>> - igt_plane_t *plane;
>> + for (i = 0; i < output_count; ++i)
>> + current_combination[i] = i * pipes_per_output;
>>
>> - if (p == PIPE_NONE)
>> - continue;
>> -
>> - mode = igt_output_get_mode(output);
>> - igt_info("pipe:%s, output:%s, mode:", kmstest_pipe_name(p), igt_output_name(output));
>> - kmstest_dump_mode(mode);
>> + while (*num_combinations < MAX_COMBINATIONS && current_combination[0] <= pipe_count - output_count * pipes_per_output) {
>> + for (i = 0; i < output_count; ++i)
>> + combinations[*num_combinations].combination[i] = current_combination[i];
>>
>> - pipe = &display->pipes[p];
>> - plane = igt_pipe_get_plane_type(pipe, DRM_PLANE_TYPE_PRIMARY);
>> + (*num_combinations)++;
>>
>> - igt_plane_set_fb(plane, &data->fb);
>> - igt_fb_set_size(&data->fb, plane, mode->hdisplay, mode->vdisplay);
>> - igt_plane_set_size(plane, mode->hdisplay, mode->vdisplay);
>> - }
>> + index = output_count - 1;
>> + while (index >= 0 && current_combination[index] == pipe_count - (output_count - index) * pipes_per_output)
>> + index--;
>>
>> - igt_assert(!igt_check_bigjoiner_support(display));
>> + if (index < 0)
>> + break;
>>
>> - /* This commit is expectd to fail as this pipe is being used for big joiner */
>> - ret = igt_display_try_commit_atomic(display, DRM_MODE_ATOMIC_TEST_ONLY |
>> - DRM_MODE_ATOMIC_ALLOW_MODESET, NULL);
>> + current_combination[index]++;
>> + for (i = index + 1; i < output_count; ++i)
>> + current_combination[i] = current_combination[i - 1] + pipes_per_output;
>> + }
>> +}
>>
>> - igt_display_reset(&data->display);
>> - igt_display_commit2(display, COMMIT_ATOMIC);
>> +static igt_output_t *get_output_by_id_or_assert(data_t *data, uint64_t output_id)
>> +{
>> + igt_output_t *output;
>>
>> - igt_assert_lt(ret, 0);
>> + for_each_connected_output(&data->display, output) {
>> + if (output->id == output_id)
>> + return output;
>> + }
>> + igt_assert("Output not found\n");
>> + return NULL;
>> }
>>
>> -static void test_basic_modeset(data_t *data)
>> +static void test_invalid_modeset_two_joiner(data_t *data, bool combined)
>> {
>> + int i, j, ret;
>> + igt_output_t *output;
>> + uint64_t *outputs;
>> + igt_plane_t *primary[INVALID_TEST_OUTPUT];
>> + igt_fb_t fb[INVALID_TEST_OUTPUT];
>> drmModeModeInfo *mode;
>> - igt_output_t *output, *bigjoiner_output = NULL;
>> - igt_display_t *display = &data->display;
>> - igt_pipe_t *pipe;
>> - igt_plane_t *plane;
>>
>> - igt_display_reset(display);
>> -
>> - for_each_connected_output(display, output) {
>> - if (data->output[0].output_id == output->id) {
>> - bigjoiner_output = output;
>> - break;
>> + outputs = combined ? data->combined_outputs : data->big_joiner_outputs;
>> +
>> + for (i = 0; i < data->n_pipes-1; i++) {
>> + igt_display_reset(&data->display);
>> + for (j = 0; j < INVALID_TEST_OUTPUT; j++) {
>> + output = get_output_by_id_or_assert(data, outputs[j]);
>> + igt_assert(output);
>> + igt_output_set_pipe(output, data->pipe_seq[i + j]);
>> + mode = igt_output_get_mode(output);
>> + igt_info("Assigning pipe %s to %s with mode %dx%d@%d%s",
>> + kmstest_pipe_name(data->pipe_seq[i + j]),
>> + igt_output_name(output), mode->hdisplay,
>> + mode->vdisplay, mode->vrefresh,
>> + j == INVALID_TEST_OUTPUT - 1 ? "\n" : ", ");
>> + primary[j] = igt_output_get_plane_type(output, DRM_PLANE_TYPE_PRIMARY);
>> + igt_create_pattern_fb(data->drm_fd, mode->hdisplay, mode->vdisplay, DRM_FORMAT_XRGB8888,
>> + DRM_FORMAT_MOD_LINEAR, &fb[j]);
>> + igt_plane_set_fb(primary[j], &fb[j]);
>> }
>> + ret = igt_display_try_commit2(&data->display, COMMIT_ATOMIC);
>> + igt_assert_f(ret != 0, "Commit shouldn't have passed\n");
>> }
>> -
>> - igt_output_set_pipe(bigjoiner_output, data->pipe1);
>> -
>> - mode = &data->output[0].mode;
>> - igt_output_override_mode(bigjoiner_output, mode);
>> -
>> - pipe = &display->pipes[data->pipe1];
>> - plane = igt_pipe_get_plane_type(pipe, DRM_PLANE_TYPE_PRIMARY);
>> -
>> - igt_plane_set_fb(plane, &data->fb);
>> - igt_fb_set_size(&data->fb, plane, mode->hdisplay, mode->vdisplay);
>> - igt_plane_set_size(plane, mode->hdisplay, mode->vdisplay);
>> -
>> - igt_display_commit2(display, COMMIT_ATOMIC);
>> -
>> - igt_output_set_pipe(bigjoiner_output, PIPE_NONE);
>> - igt_plane_set_fb(plane, NULL);
>> - igt_display_commit2(display, COMMIT_ATOMIC);
>> }
>>
>> -static void test_dual_display(data_t *data)
>> +static void tets_big_joiner_on_last_pipe(data_t *data)
>> {
>> + int i, ret;
>> + uint64_t *outputs;
>> + igt_output_t *output;
>> + igt_plane_t *primary;
>> + igt_fb_t fb;
>> drmModeModeInfo *mode;
>> - igt_output_t *output, *bigjoiner_output[2];
>> - igt_display_t *display = &data->display;
>> - igt_pipe_t *pipe;
>> - igt_plane_t *plane1, *plane2;
>> - int count = 0;
>> -
>> - igt_display_reset(display);
>> -
>> - for_each_connected_output(display, output) {
>> - if (data->output[count].output_id == output->id) {
>> - bigjoiner_output[count] = output;
>> - count++;
>> - }
>>
>> - if (count > 1)
>> - break;
>> + outputs = data->big_joiner_outputs;
>> + for (i = 0; i < data->big_joiner_output_count; i++) {
>> + igt_display_reset(&data->display);
>> + output = get_output_by_id_or_assert(data, outputs[i]);
>> + igt_output_set_pipe(output, data->pipe_seq[data->n_pipes - 1]);
>> + mode = igt_output_get_mode(output);
>> + igt_info("Assigning pipe %s to %s with mode %dx%d@%d\n",
>> + kmstest_pipe_name(data->pipe_seq[data->n_pipes - 1]),
>> + igt_output_name(output), mode->hdisplay,
>> + mode->vdisplay, mode->vrefresh);
>> + primary = igt_output_get_plane_type(output, DRM_PLANE_TYPE_PRIMARY);
>> + igt_create_pattern_fb(data->drm_fd, mode->hdisplay, mode->vdisplay, DRM_FORMAT_XRGB8888,
>> + DRM_FORMAT_MOD_LINEAR, &fb);
>> + igt_plane_set_fb(primary, &fb);
>> + ret = igt_display_try_commit2(&data->display, COMMIT_ATOMIC);
>> + igt_assert_f(ret != 0, "Commit shouldn't have passed\n");
>> }
>> +}
>>
>> - igt_output_set_pipe(bigjoiner_output[0], data->pipe1);
>> - igt_output_set_pipe(bigjoiner_output[1], data->pipe2);
>> -
>> - /* Set up first big joiner output on Pipe A*/
>> - mode = &data->output[0].mode;
>> - igt_output_override_mode(bigjoiner_output[0], mode);
>> -
>> - pipe = &display->pipes[data->pipe1];
>> - plane1 = igt_pipe_get_plane_type(pipe, DRM_PLANE_TYPE_PRIMARY);
>> -
>> - igt_plane_set_fb(plane1, &data->fb);
>> - igt_fb_set_size(&data->fb, plane1, mode->hdisplay, mode->vdisplay);
>> - igt_plane_set_size(plane1, mode->hdisplay, mode->vdisplay);
>> -
>> - /* Set up second big joiner output on Pipe C*/
>> - mode = &data->output[1].mode;
>> - igt_output_override_mode(bigjoiner_output[1], mode);
>> -
>> - pipe = &display->pipes[data->pipe2];
>> - plane2 = igt_pipe_get_plane_type(pipe, DRM_PLANE_TYPE_PRIMARY);
>> -
>> - igt_plane_set_fb(plane2, &data->fb);
>> - igt_fb_set_size(&data->fb, plane2, mode->hdisplay, mode->vdisplay);
>> - igt_plane_set_size(plane2, mode->hdisplay, mode->vdisplay);
>> -
>> - igt_display_commit2(display, COMMIT_ATOMIC);
>> +static void test_basic_modeset(data_t *data, int num_outputs,
>> + Combination combinations[MAX_COMBINATIONS],
>> + uint64_t num_combinations)
>> +{
>> + int i, j, ret;
>> + igt_display_t *display = &data->display;
>> + igt_output_t *output[num_outputs];
>> + igt_plane_t *primary[num_outputs];
>> + igt_fb_t fb[num_outputs];
>> + drmModeModeInfo *mode;
>>
>> - /* Clean up */
>> - igt_output_set_pipe(bigjoiner_output[0], PIPE_NONE);
>> - igt_output_set_pipe(bigjoiner_output[1], PIPE_NONE);
>> - igt_plane_set_fb(plane1, NULL);
>> - igt_plane_set_fb(plane2, NULL);
>> - igt_display_commit2(display, COMMIT_ATOMIC);
>> + for (i = 0; i < num_combinations; i++) {
>> + igt_display_reset(display);
>> + for (j = 0; j < num_outputs; j++) {
>> + output[j] = get_output_by_id_or_assert(data,
>> + data->big_joiner_outputs[j]);
>> + igt_info("Assigning pipe %s to %s%s",
>> + kmstest_pipe_name(data->pipe_seq[combinations[i].combination[j]]),
>> + output[j]->name, j == num_outputs - 1 ? "\n" : ", ");
>> + igt_output_set_pipe(output[j], data->pipe_seq[combinations[i].combination[j]]);
>> + primary[j] = igt_output_get_plane_type(output[j], DRM_PLANE_TYPE_PRIMARY);
>> + mode = igt_output_get_mode(output[j]);
>> + igt_create_pattern_fb(data->drm_fd, mode->hdisplay, mode->vdisplay, DRM_FORMAT_XRGB8888,
>> + DRM_FORMAT_MOD_LINEAR, &fb[j]);
>> + igt_plane_set_fb(primary[j], &fb[j]);
>> + }
>> + ret = igt_display_try_commit2(display, COMMIT_ATOMIC);
>> + igt_assert_f(ret == 0, "Commit failed\n");
>> + }
>> }
>>
>> igt_main
>> {
>> + int i, j;
>> data_t data;
>> igt_output_t *output;
>> - drmModeModeInfo mode;
>> - int valid_output = 0, i, count = 0, j = 0;
>> - uint16_t width = 0, height = 0;
>> - enum pipe pipe_seq[IGT_MAX_PIPES];
>> + drmModeModeInfo default_mode;
>>
>> + i = j = 0;
>> igt_fixture {
>> data.drm_fd = drm_open_driver_master(DRIVER_INTEL | DRIVER_XE);
>> kmstest_set_vt_graphics_mode();
>> -
>> igt_display_require(&data.display, data.drm_fd);
>> igt_require(data.display.is_atomic);
>> -
>> max_dotclock = igt_get_max_dotclock(data.drm_fd);
>> + data.big_joiner_output_count = 0;
>> + data.non_big_joiner_output_count = 0;
>> + data.combined_output_count = 0;
>> + data.output_count = 0;
>>
>> for_each_connected_output(&data.display, output) {
>> bool found = false;
>> drmModeConnector *connector = output->config.connector;
>> -
>> - /*
>> - * Bigjoiner will come in to the picture when the
>> - * resolution > 5K or clock > max-dot-clock.
>> - */
>> found = bigjoiner_mode_found(data.drm_fd, connector, max_dotclock);
>> -
>> if (found) {
>> - data.output[count].output_id = output->id;
>> - memcpy(&data.output[count].mode, &mode, sizeof(drmModeModeInfo));
>> - count++;
>> -
>> - width = max(width, mode.hdisplay);
>> - height = max(height, mode.vdisplay);
>> + data.big_joiner_outputs[data.big_joiner_output_count++] = output->id;
>> + igt_output_override_mode(output, &connector->modes[0]);
>> + } else {
>> + data.non_big_joiner_outputs[data.non_big_joiner_output_count++] = output->id;
>> + kmstest_get_connector_default_mode(data.drm_fd, connector, &default_mode);
>> + igt_output_override_mode(output, &default_mode);
>> }
>> - valid_output++;
>> + data.output_count++;
>> + }
>> +
>> + if (data.big_joiner_output_count == 1 && data.non_big_joiner_output_count > 0) {
>> + data.combined_outputs[data.combined_output_count++] = data.big_joiner_outputs[0];
>> + data.combined_outputs[data.combined_output_count++] = data.non_big_joiner_outputs[0];
>> }
>>
>> data.n_pipes = 0;
>> for_each_pipe(&data.display, i) {
>> data.n_pipes++;
>> - pipe_seq[j] = i;
>> + data.pipe_seq[j] = i;
>> j++;
>> }
>> -
>> - igt_require_f(count > 0, "No output with 5k+ mode (or) clock > max-dot-clock found\n");
>> -
>> - igt_create_pattern_fb(data.drm_fd, width, height, DRM_FORMAT_XRGB8888,
>> - DRM_FORMAT_MOD_LINEAR, &data.fb);
>> }
>>
>> igt_describe("Verify the basic modeset on big joiner mode on all pipes");
>> igt_subtest_with_dynamic("basic") {
>> - for (i = 0; i < data.n_pipes - 1; i++) {
>> - data.pipe1 = pipe_seq[i];
>> - igt_dynamic_f("pipe-%s", kmstest_pipe_name(pipe_seq[i]))
>> - test_basic_modeset(&data);
>> + igt_require_f(data.big_joiner_output_count > 0, "Big joiner output not found\n");
>> + igt_require_f(data.n_pipes > 1, "Minimum of 2 pipes are required\n");
>> +
>> + for (i = 0; i < data.big_joiner_output_count; i++) {
>> + uint64_t num_combinations = 0;
>> + Combination combinations[MAX_COMBINATIONS];
>> +
>> + generate_combinations(i+1, data.n_pipes, BIG_JOINER, combinations, &num_combinations);
>> + igt_info("Number of combinations for %d outputs and %d pipes are %ld\n",
>> + i+1, data.n_pipes, num_combinations);
>> +
>> + if (num_combinations > 0)
>> + igt_dynamic_f("%dx-big-joiner", i+1)
>> + test_basic_modeset(&data, i+1, combinations, num_combinations);
>> + else
>> + break;
>> }
>> }
>>
>> - igt_describe("Verify if the modeset on the adjoining pipe is rejected "
>> - "when the pipe is active with a big joiner modeset");
>> igt_subtest_with_dynamic("invalid-modeset") {
>> - data.pipe1 = pipe_seq[j - 1];
>> -
>> - igt_display_reset(&data.display);
>> - for_each_connected_output(&data.display, output) {
>> - if (data.output[0].output_id != output->id)
>> - continue;
>> -
>> - mode = data.output[0].mode;
>> - igt_output_set_pipe(output, data.pipe1);
>> - igt_output_override_mode(output, &mode);
>> + igt_require_f(data.big_joiner_output_count > 0, "Big joiner output not found\n");
>> + igt_require_f(data.n_pipes > 1, "Minimum of 2 pipes are required\n");
>>
>> - igt_dynamic_f("pipe-%s-%s",
>> - kmstest_pipe_name(data.pipe1),
>> - igt_output_name(output))
>> - test_invalid_modeset(&data);
>> - }
>> + if (data.big_joiner_output_count >= 1)
>> + igt_dynamic_f("big_joiner_on_last_pipe")
>> + tets_big_joiner_on_last_pipe(&data);
>>
>> - if(valid_output > 1) {
>> - for (i = 0; i < data.n_pipes - 1; i++) {
>> - igt_output_t *first_output = NULL, *second_output = NULL;
>> -
>> - data.pipe1 = pipe_seq[i];
>> - data.pipe2 = pipe_seq[i + 1];
>> -
>> - igt_display_reset(&data.display);
>> - for_each_connected_output(&data.display, output) {
>> - if (data.output[0].output_id == output->id) {
>> - first_output = output;
>> - mode = data.output[0].mode;
>> -
>> - igt_output_set_pipe(output, data.pipe1);
>> - igt_output_override_mode(output, &mode);
>> - } else if (second_output == NULL) {
>> - second_output = output;
>> - igt_output_set_pipe(output, data.pipe2);
>> -
>> - break;
>> - }
>> - }
>> -
>> - igt_dynamic_f("pipe-%s-%s-pipe-%s-%s",
>> - kmstest_pipe_name(data.pipe1),
>> - igt_output_name(first_output),
>> - kmstest_pipe_name(data.pipe2),
>> - igt_output_name(second_output))
>> - test_invalid_modeset(&data);
>> - }
>> - }
>> - }
>> + if (data.big_joiner_output_count > 1)
>> + igt_dynamic_f("invalid_combinations_with_two_bigjoiner")
>> + test_invalid_modeset_two_joiner(&data, false);
>>
>> - igt_describe("Verify simultaneous modeset on 2 big joiner outputs");
>> - igt_subtest_with_dynamic("2x-modeset") {
>> - igt_require_f(count > 1, "2 outputs with big joiner modes are required\n");
>> - igt_require_f(data.n_pipes > 3, "Minumum of 4 pipes are required\n");
>> - for (i = 0; (i + 2) < data.n_pipes - 1; i++) {
>> - data.pipe1 = pipe_seq[i];
>> - data.pipe2 = pipe_seq[i + 2];
>> - igt_dynamic_f("pipe-%s-%s", kmstest_pipe_name(pipe_seq[i]), kmstest_pipe_name(pipe_seq[i + 2]))
>> - test_dual_display(&data);
>> + if (data.combined_output_count) {
>> + igt_dynamic_f("invalid_combinations_with_bigjoiner_non_bigjoiner")
>> + test_invalid_modeset_two_joiner(&data, true);
>> }
>> }
>>
>> igt_fixture {
>> - igt_remove_fb(data.drm_fd, &data.fb);
>> igt_display_fini(&data.display);
>> drm_close_driver(data.drm_fd);
>> }
>> --
>> 2.25.1
Thanks and Regards
Kunal Joshi
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