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Diffstat (limited to 'tests/i915/gem_pwrite.c')
-rw-r--r-- | tests/i915/gem_pwrite.c | 358 |
1 files changed, 358 insertions, 0 deletions
diff --git a/tests/i915/gem_pwrite.c b/tests/i915/gem_pwrite.c new file mode 100644 index 00000000..696bd316 --- /dev/null +++ b/tests/i915/gem_pwrite.c @@ -0,0 +1,358 @@ +/* + * Copyright © 2011 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. + * + * Authors: + * Chris Wilson <chris@chris-wilson.co.uk> + * + */ + +#include "igt.h" +#include <unistd.h> +#include <stdlib.h> +#include <stdint.h> +#include <stdio.h> +#include <string.h> +#include <fcntl.h> +#include <inttypes.h> +#include <errno.h> +#include <sys/stat.h> +#include <sys/ioctl.h> +#include <sys/time.h> +#include "drm.h" + +#define OBJECT_SIZE 16384 + +#define COPY_BLT_CMD (2<<29|0x53<<22|0x6) +#define BLT_WRITE_ALPHA (1<<21) +#define BLT_WRITE_RGB (1<<20) +#define BLT_SRC_TILED (1<<15) +#define BLT_DST_TILED (1<<11) + +static void do_gem_write(int fd, uint32_t handle, void *buf, int len, int loops) +{ + while (loops--) + gem_write(fd, handle, 0, buf, len); +} + +static double elapsed(const struct timeval *start, + const struct timeval *end, + int loop) +{ + return (1e6*(end->tv_sec - start->tv_sec) + (end->tv_usec - start->tv_usec))/loop; +} + +static const char *bytes_per_sec(char *buf, double v) +{ + const char *order[] = { + "", + "KiB", + "MiB", + "GiB", + "TiB", + NULL, + }, **o = order; + + while (v > 1000 && o[1]) { + v /= 1000; + o++; + } + sprintf(buf, "%.1f%s/s", v, *o); + return buf; +} + +#define FORWARD 0x1 +#define BACKWARD 0x2 +#define RANDOM 0x4 +static void test_big_cpu(int fd, int scale, unsigned flags) +{ + uint64_t offset, size; + uint32_t handle; + + switch (scale) { + case 0: + size = gem_mappable_aperture_size() + 4096; + break; + case 1: + size = gem_global_aperture_size(fd) + 4096; + break; + case 2: + size = gem_aperture_size(fd) + 4096; + break; + } + intel_require_memory(1, size, CHECK_RAM); + + handle = gem_create(fd, size); + gem_set_domain(fd, handle, I915_GEM_DOMAIN_CPU, I915_GEM_DOMAIN_CPU); + + if (flags & FORWARD) { + igt_debug("Forwards\n"); + for (offset = 0; offset < size; offset += 4096) { + int suboffset = (offset >> 12) % (4096 - sizeof(offset)); + uint64_t tmp; + + gem_write(fd, handle, offset + suboffset, &offset, sizeof(offset)); + gem_read(fd, handle, offset + suboffset, &tmp, sizeof(tmp)); + igt_assert_eq_u64(offset, tmp); + } + } + + if (flags & BACKWARD) { + igt_debug("Backwards\n"); + for (offset = size >> 12; offset--; ) { + int suboffset = 4096 - (offset % (4096 - sizeof(offset))); + uint64_t tmp; + + gem_write(fd, handle, (offset<<12) + suboffset, &offset, sizeof(offset)); + gem_read(fd, handle, (offset<<12) + suboffset, &tmp, sizeof(tmp)); + igt_assert_eq_u64(offset, tmp); + } + } + + if (flags & RANDOM) { + igt_debug("Random\n"); + for (offset = 0; offset < size >> 12; offset++) { + uint64_t tmp = rand() % (size >> 12); + int suboffset = tmp % (4096 - sizeof(offset)); + + gem_write(fd, handle, (tmp << 12) + suboffset, &offset, sizeof(offset)); + gem_read(fd, handle, (tmp << 12) + suboffset, &tmp, sizeof(tmp)); + igt_assert_eq_u64(offset, tmp); + } + } + + gem_close(fd, handle); +} + +static void test_big_gtt(int fd, int scale, unsigned flags) +{ + uint64_t offset, size; + uint64_t *ptr; + uint32_t handle; + + igt_require(gem_mmap__has_wc(fd)); + switch (scale) { + case 0: + size = gem_mappable_aperture_size() + 4096; + break; + case 1: + size = gem_global_aperture_size(fd) + 4096; + break; + case 2: + size = gem_aperture_size(fd) + 4096; + break; + } + intel_require_memory(1, size, CHECK_RAM); + + handle = gem_create(fd, size); + gem_set_domain(fd, handle, I915_GEM_DOMAIN_GTT, I915_GEM_DOMAIN_GTT); + + ptr = gem_mmap__wc(fd, handle, 0, size, PROT_READ); + + if (flags & FORWARD) { + igt_debug("Forwards\n"); + for (offset = 0; offset < size; offset += 4096) { + int suboffset = (offset >> 12) % (4096 / sizeof(offset) - 1) * sizeof(offset); + + gem_write(fd, handle, offset + suboffset, &offset, sizeof(offset)); + gem_set_domain(fd, handle, I915_GEM_DOMAIN_WC, 0); + igt_assert_eq_u64(ptr[(offset + suboffset)/sizeof(offset)], offset); + } + } + + if (flags & BACKWARD) { + igt_debug("Backwards\n"); + for (offset = size >> 12; offset--; ) { + int suboffset = (4096 - (offset % (4096 - sizeof(offset)))) & -sizeof(offset); + gem_write(fd, handle, (offset<<12) + suboffset, &offset, sizeof(offset)); + gem_set_domain(fd, handle, I915_GEM_DOMAIN_WC, 0); + igt_assert_eq_u64(ptr[((offset<<12) + suboffset)/sizeof(offset)], offset); + } + } + + if (flags & RANDOM) { + igt_debug("Random\n"); + for (offset = 0; offset < size >> 12; offset++) { + uint64_t tmp = rand() % (size >> 12); + int suboffset = (tmp % 4096) & -sizeof(offset); + + tmp = (tmp << 12) + suboffset; + gem_write(fd, handle, tmp, &offset, sizeof(offset)); + gem_set_domain(fd, handle, I915_GEM_DOMAIN_WC, 0); + igt_assert_eq_u64(ptr[tmp/sizeof(offset)], offset); + } + } + + munmap(ptr, size); + gem_close(fd, handle); +} + +uint32_t *src, dst; +uint32_t *src_user, dst_stolen; +int fd; + +int main(int argc, char **argv) +{ + int object_size = 0; + double usecs; + const char* bps; + char buf[100]; + int count; + const struct { + int level; + const char *name; + } cache[] = { + { 0, "uncached" }, + { 1, "snoop" }, + { 2, "display" }, + { -1 }, + }, *c; + + igt_subtest_init(argc, argv); + + if (argc > 1 && atoi(argv[1])) + object_size = atoi(argv[1]); + if (object_size == 0) + object_size = OBJECT_SIZE; + object_size = (object_size + 3) & -4; + + igt_fixture { + fd = drm_open_driver(DRIVER_INTEL); + + dst = gem_create(fd, object_size); + src = malloc(object_size); + dst_stolen = gem_create_stolen(fd, object_size); + src_user = malloc(object_size); + } + + igt_subtest("basic") { + for (count = 1; count <= 1<<17; count <<= 1) { + struct timeval start, end; + + gettimeofday(&start, NULL); + do_gem_write(fd, dst, src, object_size, count); + gettimeofday(&end, NULL); + usecs = elapsed(&start, &end, count); + bps = bytes_per_sec(buf, object_size/usecs*1e6); + igt_info("Time to pwrite %d bytes x %6d: %7.3fµs, %s\n", + object_size, count, usecs, bps); + fflush(stdout); + } + } + + for (c = cache; c->level != -1; c++) { + igt_subtest(c->name) { + gem_set_caching(fd, dst, c->level); + + for (count = 1; count <= 1<<17; count <<= 1) { + struct timeval start, end; + + gettimeofday(&start, NULL); + do_gem_write(fd, dst, src, object_size, count); + gettimeofday(&end, NULL); + usecs = elapsed(&start, &end, count); + bps = bytes_per_sec(buf, object_size/usecs*1e6); + igt_info("Time to %s pwrite %d bytes x %6d: %7.3fµs, %s\n", + c->name, object_size, count, usecs, bps); + fflush(stdout); + } + } + } + + igt_subtest("stolen-normal") { + gem_require_stolen_support(fd); + for (count = 1; count <= 1<<17; count <<= 1) { + struct timeval start, end; + + gettimeofday(&start, NULL); + do_gem_write(fd, dst_stolen, src_user, + object_size, count); + gettimeofday(&end, NULL); + usecs = elapsed(&start, &end, count); + bps = bytes_per_sec(buf, object_size/usecs*1e6); + igt_info("Time to pwrite %d bytes x %6d: %7.3fµs, %s\n", + object_size, count, usecs, bps); + fflush(stdout); + } + } + + for (c = cache; c->level != -1; c++) { + igt_subtest_f("stolen-%s", c->name) { + gem_require_stolen_support(fd); + gem_set_caching(fd, dst, c->level); + for (count = 1; count <= 1<<17; count <<= 1) { + struct timeval start, end; + + gettimeofday(&start, NULL); + do_gem_write(fd, dst_stolen, src_user, + object_size, count); + gettimeofday(&end, NULL); + bps = bytes_per_sec(buf, + object_size/usecs*1e6); + igt_info("Time to stolen-%s pwrite %d bytes x %6d: %7.3fµs, %s\n", + c->name, object_size, count, + usecs, bps); + fflush(stdout); + } + } + } + + igt_fixture { + free(src); + gem_close(fd, dst); + free(src_user); + gem_close(fd, dst_stolen); + } + + { + const struct mode { + const char *name; + unsigned flags; + } modes[] = { + { "forwards", FORWARD }, + { "backwards", BACKWARD }, + { "random", RANDOM }, + { "fbr", FORWARD | BACKWARD | RANDOM }, + { NULL }, + }, *m; + for (m = modes; m->name; m++) { + igt_subtest_f("small-cpu-%s", m->name) + test_big_cpu(fd, 0, m->flags); + igt_subtest_f("small-gtt-%s", m->name) + test_big_gtt(fd, 0, m->flags); + + igt_subtest_f("big-cpu-%s", m->name) + test_big_cpu(fd, 1, m->flags); + igt_subtest_f("big-gtt-%s", m->name) + test_big_gtt(fd, 1, m->flags); + + igt_subtest_f("huge-cpu-%s", m->name) + test_big_cpu(fd, 2, m->flags); + igt_subtest_f("huge-gtt-%s", m->name) + test_big_gtt(fd, 2, m->flags); + } + } + + igt_fixture + close(fd); + + igt_exit(); +} |