| /* |
| * Copyright © 2017 Intel Corporation |
| * |
| * 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 "igt.h" |
| |
| #define MAX_ERROR 5 /* % */ |
| |
| #define assert_within_epsilon(x, ref, tolerance) \ |
| igt_assert_f(100 * x <= (100 + tolerance) * ref && \ |
| 100 * x >= (100 - tolerance) * ref, \ |
| "'%s' != '%s' (%lld not within %d%% tolerance of %lld)\n",\ |
| #x, #ref, (long long)x, tolerance, (long long)ref) |
| |
| static void spin(int fd, unsigned int engine, unsigned int timeout_sec) |
| { |
| const uint64_t timeout_100ms = 100000000LL; |
| unsigned long loops = 0; |
| igt_spin_t *spin; |
| struct timespec tv = { }; |
| struct timespec itv = { }; |
| uint64_t elapsed; |
| |
| spin = igt_spin_batch_new(fd, 0, engine, 0); |
| while ((elapsed = igt_nsec_elapsed(&tv)) >> 30 < timeout_sec) { |
| igt_spin_t *next = __igt_spin_batch_new(fd, 0, engine, 0); |
| |
| igt_spin_batch_set_timeout(spin, |
| timeout_100ms - igt_nsec_elapsed(&itv)); |
| gem_sync(fd, spin->handle); |
| igt_debug("loop %lu: interval=%fms (target 100ms), elapsed %fms\n", |
| loops, |
| igt_nsec_elapsed(&itv) * 1e-6, |
| igt_nsec_elapsed(&tv) * 1e-6); |
| memset(&itv, 0, sizeof(itv)); |
| |
| igt_spin_batch_free(fd, spin); |
| spin = next; |
| loops++; |
| } |
| igt_spin_batch_free(fd, spin); |
| |
| igt_info("Completed %ld loops in %lld ns, target %ld\n", |
| loops, (long long)elapsed, (long)(elapsed / timeout_100ms)); |
| |
| assert_within_epsilon(timeout_100ms * loops, elapsed, MAX_ERROR); |
| igt_assert_eq(intel_detect_and_clear_missed_interrupts(fd), 0); |
| } |
| |
| static void spin_exit_handler(int sig) |
| { |
| igt_terminate_spin_batches(); |
| } |
| |
| static void spin_on_all_engines(int fd, unsigned int timeout_sec) |
| { |
| unsigned engine; |
| |
| for_each_engine(fd, engine) { |
| if (engine == 0) |
| continue; |
| |
| igt_fork(child, 1) { |
| igt_install_exit_handler(spin_exit_handler); |
| spin(fd, engine, timeout_sec); |
| } |
| } |
| |
| igt_waitchildren(); |
| } |
| |
| igt_main |
| { |
| const struct intel_execution_engine *e; |
| int fd = -1; |
| |
| igt_skip_on_simulation(); |
| |
| igt_fixture { |
| fd = drm_open_driver(DRIVER_INTEL); |
| igt_require_gem(fd); |
| igt_fork_hang_detector(fd); |
| intel_detect_and_clear_missed_interrupts(fd); |
| } |
| |
| for (e = intel_execution_engines; e->name; e++) { |
| if (e->exec_id == 0) |
| continue; |
| |
| igt_subtest_f("basic-%s", e->name) |
| spin(fd, e->exec_id, 3); |
| } |
| |
| igt_subtest("spin-each") |
| spin_on_all_engines(fd, 3); |
| |
| igt_fixture { |
| igt_stop_hang_detector(); |
| close(fd); |
| } |
| } |