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> } > > +/** > + * SUBTEST: mocs_suspend_resume > + * Description: > + * Validate mocs register contents over suspend resume > + * > + * Functionality: mocs > + * Run type: FULL > + */ > +static void test_mocs_suspend_resume(device_t device) > +{ > + int gt; > + > + xe_for_each_gt(device.fd_xe, gt) { > + char path[256]; > + > + // Mocs debugfs contents before and after suspend-resume > + char mocs_content_pre[4096], mocs_contents_post[4096]; > + > + sprintf(path, "gt%d/mocs", gt); > + igt_assert(igt_debugfs_exists(device.fd_xe, path, O_RDONLY)); > + igt_debugfs_dump(device.fd_xe, path); > + igt_debugfs_read(device.fd_xe, path, mocs_content_pre); > + > + fw_handle = igt_debugfs_open(device.fd_xe, "forcewake_all", O_RDONLY); > + igt_assert(fw_handle >= 0); > + igt_assert(igt_get_runtime_pm_status() == IGT_RUNTIME_PM_STATUS_ACTIVE); > + > + /* Runtime suspend */ > + close(fw_handle); > + igt_assert(igt_wait_for_pm_status(IGT_RUNTIME_PM_STATUS_SUSPENDED)); > + > + igt_assert(igt_debugfs_exists(device.fd_xe, path, O_RDONLY)); > + igt_debugfs_dump(device.fd_xe, path); > + igt_debugfs_read(device.fd_xe, path, mocs_contents_post); > + > + igt_assert(strcmp(mocs_content_pre, mocs_contents_post) == 0); > + } > +} > + > igt_main > { > struct drm_xe_engine_class_instance *hwe; > @@ -767,6 +806,10 @@ igt_main > dpms_on_off(device, DRM_MODE_DPMS_ON); > igt_pm_set_autosuspend_delay(device.pci_xe, delay_ms); > } > + > + igt_subtest("mocs_suspend_resume") > + test_mocs_suspend_resume(device); > + > } > > igt_fixture {