diff options
Diffstat (limited to 'tests')
| -rw-r--r-- | tests/Makefile.sources | 1 | ||||
| -rw-r--r-- | tests/gem_sync.c | 160 |
2 files changed, 161 insertions, 0 deletions
diff --git a/tests/Makefile.sources b/tests/Makefile.sources index ef637334..3b2ae991 100644 --- a/tests/Makefile.sources +++ b/tests/Makefile.sources @@ -148,6 +148,7 @@ TESTS_progs = \ gem_set_tiling_vs_gtt \ gem_set_tiling_vs_pwrite \ gem_storedw_loop \ + gem_sync \ gem_threaded_access_tiled \ gem_tiled_fence_blits \ gem_tiled_pread_basic \ diff --git a/tests/gem_sync.c b/tests/gem_sync.c new file mode 100644 index 00000000..7c3b7ee5 --- /dev/null +++ b/tests/gem_sync.c @@ -0,0 +1,160 @@ +/* + * Copyright © 2016 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 <time.h> + +#include "igt.h" + +IGT_TEST_DESCRIPTION("Basic check of ring<->ring write synchronisation."); + +/* + * Testcase: Basic check of sync + * + * Extremely efficient at catching missed irqs + */ + +static unsigned intel_detect_and_clear_missed_irq(int fd) +{ + unsigned missed = 0; + FILE *file; + + gem_quiescent_gpu(fd); + + file = igt_debugfs_fopen("i915_ring_missed_irq", "r"); + if (file) { + igt_assert(fscanf(file, "%x", &missed) == 1); + fclose(file); + } + if (missed) { + file = igt_debugfs_fopen("i915_ring_missed_irq", "w"); + if (file) { + fwrite("0\n", 1, 2, file); + fclose(file); + } + } + + return missed; +} + +static double gettime(void) +{ + static clockid_t clock = -1; + struct timespec ts; + + /* Stay on the same clock for consistency. */ + if (clock != (clockid_t)-1) { + if (clock_gettime(clock, &ts)) + goto error; + goto out; + } + +#ifdef CLOCK_MONOTONIC_RAW + if (!clock_gettime(clock = CLOCK_MONOTONIC_RAW, &ts)) + goto out; +#endif +#ifdef CLOCK_MONOTONIC_COARSE + if (!clock_gettime(clock = CLOCK_MONOTONIC_COARSE, &ts)) + goto out; +#endif + if (!clock_gettime(clock = CLOCK_MONOTONIC, &ts)) + goto out; +error: + igt_warn("Could not read monotonic time: %s\n", + strerror(errno)); + igt_assert(0); + return 0; + +out: + return ts.tv_sec + 1e-9*ts.tv_nsec; +} + +static int __gem_execbuf(int fd, struct drm_i915_gem_execbuffer2 *eb) +{ + int err = 0; + if (drmIoctl(fd, DRM_IOCTL_I915_GEM_EXECBUFFER2, eb)) + err = -errno; + return err; +} + +static void +sync_ring(int fd, int ring, unsigned flags) +{ + const uint32_t bbe = MI_BATCH_BUFFER_END; + struct drm_i915_gem_execbuffer2 execbuf; + struct drm_i915_gem_exec_object2 object; + double start, elapsed; + unsigned long cycles; + + intel_detect_and_clear_missed_irq(fd); /* clear before we begin */ + + memset(&object, 0, sizeof(object)); + object.handle = gem_create(fd, 4096); + gem_write(fd, object.handle, 4096-sizeof(bbe), &bbe, sizeof(bbe)); + + memset(&execbuf, 0, sizeof(execbuf)); + execbuf.buffers_ptr = (uintptr_t)&object; + execbuf.buffer_count = 1; + execbuf.flags = ring | flags; + + igt_require(__gem_execbuf(fd, &execbuf) == 0); + + srandom(0xdeadbeef); + + start = gettime(); + cycles = 0; + do { + gem_execbuf(fd, &execbuf); + gem_sync(fd, object.handle); + cycles++; + } while ((elapsed = gettime() - start) < SLOW_QUICK(10, 1)); + igt_info("Completed %ld cycles: %.3f us\n", cycles, elapsed*1e6/cycles); + + gem_close(fd, object.handle); + igt_assert_eq(intel_detect_and_clear_missed_irq(fd), 0); +} + +igt_main +{ + int fd = -1; + + igt_skip_on_simulation(); + + igt_fixture + fd = drm_open_driver(DRIVER_INTEL); + + igt_subtest("basic-render") + sync_ring(fd, I915_EXEC_RENDER, 0); + igt_subtest("basic-blt") + sync_ring(fd, I915_EXEC_BLT, 0); + igt_subtest("bsd") + sync_ring(fd, I915_EXEC_BSD, 0); + igt_subtest("bsd1") + sync_ring(fd, I915_EXEC_BSD, 1<<13 /*I915_EXEC_BSD_RING1*/); + igt_subtest("bsd2") + sync_ring(fd, I915_EXEC_BSD, 2<<13 /*I915_EXEC_BSD_RING2*/); + igt_subtest("vebox") + sync_ring(fd, I915_EXEC_VEBOX, 0); + + igt_fixture + close(fd); +} |