On Wed, Sep 25, 2024 at 03:09:23PM -0700, Vinay Belgaumkar wrote: > 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]>
Reviewed-by: Rodrigo Vivi <[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 >
