diff options
| -rw-r--r-- | .gitignore | 1 | ||||
| -rw-r--r-- | tests/Makefile.am | 4 | ||||
| -rw-r--r-- | tests/gem_gtt_speed.c | 236 |
3 files changed, 240 insertions, 1 deletions
@@ -36,6 +36,7 @@ tests/getversion tests/gem_basic tests/gem_fence_thrash tests/gem_flink +tests/gem_gtt_speed tests/gem_largeobject tests/gem_mmap tests/gem_pread_after_blit diff --git a/tests/Makefile.am b/tests/Makefile.am index 2bdc3dfd..95eaa4af 100644 --- a/tests/Makefile.am +++ b/tests/Makefile.am @@ -14,7 +14,9 @@ TESTS = getversion \ gem_bad_blit \ gem_bad_batch \ gem_hang \ - gem_fence_thrash + gem_fence_thrash \ + gem_gtt_speed \ + $(NULL) EXTRA_PROGRAMS = $(TESTS) CLEANFILES = $(EXTRA_PROGRAMS) diff --git a/tests/gem_gtt_speed.c b/tests/gem_gtt_speed.c new file mode 100644 index 00000000..af9f9478 --- /dev/null +++ b/tests/gem_gtt_speed.c @@ -0,0 +1,236 @@ +/* + * Copyright © 2010 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: + * Eric Anholt <eric@anholt.net> + * Chris Wilson <chris@chris-wilson.co.uk> + * + */ + +#include <unistd.h> +#include <stdlib.h> +#include <stdint.h> +#include <stdio.h> +#include <string.h> +#include <assert.h> +#include <fcntl.h> +#include <inttypes.h> +#include <errno.h> +#include <sys/stat.h> +#include <sys/ioctl.h> +#include <sys/mman.h> +#include <sys/time.h> +#include "drm.h" +#include "i915_drm.h" +#include "drmtest.h" + +#define OBJECT_SIZE 16384 + +static uint32_t gem_create(int fd, int size) +{ + struct drm_i915_gem_create create; + + create.handle = 0; + create.size = size; + (void)drmIoctl(fd, DRM_IOCTL_I915_GEM_CREATE, &create); + + return create.handle; +} + +static void *gem_mmap(int fd, uint32_t handle, int size, int prot) +{ + struct drm_i915_gem_mmap_gtt mmap_arg; + void *ptr; + + mmap_arg.handle = handle; + if (drmIoctl(fd, DRM_IOCTL_I915_GEM_MMAP_GTT, &mmap_arg)) + return NULL; + + ptr = mmap(0, size, prot, MAP_SHARED, fd, mmap_arg.offset); + if (ptr == MAP_FAILED) + ptr = NULL; + + return ptr; +} + +static int gem_write(int fd, + uint32_t handle, uint32_t offset, + const void *src, int length) +{ + struct drm_i915_gem_pwrite pwrite; + + pwrite.handle = handle; + pwrite.offset = offset; + pwrite.size = length; + pwrite.data_ptr = (uintptr_t)src; + return drmIoctl(fd, DRM_IOCTL_I915_GEM_PWRITE, &pwrite); +} + +static int gem_read(int fd, + uint32_t handle, uint32_t offset, + const void *src, int length) +{ + struct drm_i915_gem_pread pread; + + pread.handle = handle; + pread.offset = offset; + pread.size = length; + pread.data_ptr = (uintptr_t)src; + return drmIoctl(fd, DRM_IOCTL_I915_GEM_PREAD, &pread); +} + +static void gem_set_tiling(int fd, uint32_t handle, int tiling) +{ + struct drm_i915_gem_set_tiling set_tiling; + int ret; + + do { + set_tiling.handle = handle; + set_tiling.tiling_mode = tiling; + set_tiling.stride = 512; + + ret = ioctl(fd, DRM_IOCTL_I915_GEM_SET_TILING, &set_tiling); + } while (ret == -1 && (errno == EINTR || errno == EAGAIN)); +} + +static void gem_close(int fd, uint32_t handle) +{ + struct drm_gem_close close; + + close.handle = handle; + (void)drmIoctl(fd, DRM_IOCTL_GEM_CLOSE, &close); +} + +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; +} + +int main(int argc, char **argv) +{ + struct timeval start, end; + uint8_t buf[OBJECT_SIZE]; + uint32_t handle; + int loop, i, tiling; + int fd; + + fd = drm_open_any(); + + handle = gem_create(fd, OBJECT_SIZE); + assert(handle); + + for (tiling = I915_TILING_NONE; tiling <= I915_TILING_Y; tiling++) { + if (tiling != I915_TILING_NONE) { + printf("\nSetting tiling mode to %s\n", + tiling == I915_TILING_X ? "X" : "Y"); + gem_set_tiling(fd, handle, tiling); + } + + if (tiling == I915_TILING_NONE) { + /* CPU pwrite */ + gettimeofday(&start, NULL); + for (loop = 0; loop < 1000; loop++) + gem_write(fd, handle, 0, buf, sizeof(buf)); + gettimeofday(&end, NULL); + printf("Time to pwrite 16k through the CPU: %7.3fµs\n", + elapsed(&start, &end, loop)); + + /* CPU pread */ + gettimeofday(&start, NULL); + for (loop = 0; loop < 1000; loop++) + gem_read(fd, handle, 0, buf, sizeof(buf)); + gettimeofday(&end, NULL); + printf("Time to pread 16k through the CPU: %7.3fµs\n", + elapsed(&start, &end, loop)); + } + + /* mmap read */ + gettimeofday(&start, NULL); + for (loop = 0; loop < 1000; loop++) { + volatile uint32_t *ptr = gem_mmap(fd, handle, OBJECT_SIZE, PROT_READ); + int x = 0; + + for (i = 0; i < OBJECT_SIZE/sizeof(*ptr); i++) + x += ptr[i]; + + munmap((void *)ptr, OBJECT_SIZE); + } + gettimeofday(&end, NULL); + printf("Time to read 16k through a GTT map: %7.3fµs\n", + elapsed(&start, &end, loop)); + + /* mmap write */ + gettimeofday(&start, NULL); + for (loop = 0; loop < 1000; loop++) { + volatile uint32_t *ptr = gem_mmap(fd, handle, OBJECT_SIZE, PROT_READ | PROT_WRITE); + + for (i = 0; i < OBJECT_SIZE/sizeof(*ptr); i++) + ptr[i] = i; + + munmap((void *)ptr, OBJECT_SIZE); + } + gettimeofday(&end, NULL); + printf("Time to write 16k through a GTT map: %7.3fµs\n", + elapsed(&start, &end, loop)); + + /* mmap read */ + gettimeofday(&start, NULL); + for (loop = 0; loop < 1000; loop++) { + volatile uint32_t *ptr = gem_mmap(fd, handle, OBJECT_SIZE, PROT_READ); + int x = 0; + + for (i = 0; i < OBJECT_SIZE/sizeof(*ptr); i++) + x += ptr[i]; + + munmap((void *)ptr, OBJECT_SIZE); + } + gettimeofday(&end, NULL); + printf("Time to read 16k (again) through a GTT map: %7.3fµs\n", + elapsed(&start, &end, loop)); + + if (tiling == I915_TILING_NONE) { + /* GTT pwrite */ + gettimeofday(&start, NULL); + for (loop = 0; loop < 1000; loop++) + gem_write(fd, handle, 0, buf, sizeof(buf)); + gettimeofday(&end, NULL); + printf("Time to pwrite 16k through the GTT: %7.3fµs\n", + elapsed(&start, &end, loop)); + + /* GTT pread */ + gettimeofday(&start, NULL); + for (loop = 0; loop < 1000; loop++) + gem_read(fd, handle, 0, buf, sizeof(buf)); + gettimeofday(&end, NULL); + printf("Time to pread 16k through the GTT: %7.3fµs\n", + elapsed(&start, &end, loop)); + } + + } + + gem_close(fd, handle); + close(fd); + + return 0; +} |