summaryrefslogtreecommitdiff
path: root/tests/i915/gem_pwrite.c
diff options
context:
space:
mode:
Diffstat (limited to 'tests/i915/gem_pwrite.c')
-rw-r--r--tests/i915/gem_pwrite.c358
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();
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-23 03:48:45 +0000