Some recent WAs reduce the GT freq during driver load/reset. Use sync reset so that we give enough time for GT frequency to be restored after reset has completed.
Also, stash/restore frequencies per GT as they can be different. Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/2676 Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/2711 Cc: Badal Nilawar <[email protected]> Signed-off-by: Vinay Belgaumkar <[email protected]> --- tests/intel/xe_gt_freq.c | 24 +++++++++++++++++------- 1 file changed, 17 insertions(+), 7 deletions(-) diff --git a/tests/intel/xe_gt_freq.c b/tests/intel/xe_gt_freq.c index 427e12c55..de4d111ea 100644 --- a/tests/intel/xe_gt_freq.c +++ b/tests/intel/xe_gt_freq.c @@ -341,7 +341,8 @@ static void test_reset(int fd, int gt_id, int cycles) igt_assert_f(get_freq(fd, gt_id, "cur") == rpn, "Failed after %d good cycles\n", i); - xe_force_gt_reset_async(fd, gt_id); + xe_force_gt_reset_sync(fd, gt_id); + usleep(SLPC_FREQ_LATENCY_US); igt_assert_f(get_freq(fd, gt_id, "min") == rpn, @@ -433,16 +434,23 @@ igt_main int fd; int gt; struct drm_xe_engine_class_instance *hwe; - uint32_t stash_min; - uint32_t stash_max; + uint32_t *stash_min, *stash_max; + int num_gts; igt_fixture { fd = drm_open_driver(DRIVER_XE); igt_require(xe_sysfs_gt_has_node(fd, 0, "freq0")); + num_gts = xe_number_gt(fd); + /* The defaults are the same. Stashing the gt0 is enough */ - stash_min = get_freq(fd, 0, "min"); - stash_max = get_freq(fd, 0, "max"); + stash_min = (uint32_t *) malloc(sizeof(uint32_t) * num_gts); + stash_max = (uint32_t *) malloc(sizeof(uint32_t) * num_gts); + + xe_for_each_gt(fd, gt) { + stash_min[gt] = get_freq(fd, gt, "min"); + stash_max[gt] = get_freq(fd, gt, "max"); + } } igt_subtest("throttle_basic_api") { @@ -517,9 +525,11 @@ igt_main igt_fixture { xe_for_each_gt(fd, gt) { - set_freq(fd, gt, "min", stash_min); - set_freq(fd, gt, "max", stash_max); + set_freq(fd, gt, "max", stash_max[gt]); + set_freq(fd, gt, "min", stash_min[gt]); } + free(stash_min); + free(stash_max); drm_close_driver(fd); } } -- 2.38.1
