| /* |
| * 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 <fcntl.h> |
| #include <inttypes.h> |
| #include <errno.h> |
| #include <sys/stat.h> |
| #include <sys/ioctl.h> |
| #include <sys/time.h> |
| #include "drm.h" |
| #include "ioctl_wrappers.h" |
| #include "drmtest.h" |
| |
| #define OBJECT_SIZE 16384 |
| |
| 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; |
| uint32_t handle; |
| int size = OBJECT_SIZE; |
| int loop, i, tiling; |
| int fd; |
| |
| igt_simple_init(argc, argv); |
| |
| igt_skip_on_simulation(); |
| |
| if (argc > 1) |
| size = atoi(argv[1]); |
| if (size == 0) { |
| igt_warn("Invalid object size specified\n"); |
| return 1; |
| } |
| |
| buf = malloc(size); |
| memset(buf, 0, size); |
| fd = drm_open_any(); |
| |
| handle = gem_create(fd, size); |
| igt_assert(handle); |
| |
| for (tiling = I915_TILING_NONE; tiling <= I915_TILING_Y; tiling++) { |
| if (tiling != I915_TILING_NONE) { |
| igt_info("\nSetting tiling mode to %s\n", |
| tiling == I915_TILING_X ? "X" : "Y"); |
| gem_set_tiling(fd, handle, tiling, 512); |
| } |
| |
| if (tiling == I915_TILING_NONE) { |
| gem_set_domain(fd, handle, |
| I915_GEM_DOMAIN_CPU, |
| I915_GEM_DOMAIN_CPU); |
| |
| { |
| uint32_t *base = gem_mmap__cpu(fd, handle, 0, size, PROT_READ | PROT_WRITE); |
| volatile uint32_t *ptr = base; |
| int x = 0; |
| |
| for (i = 0; i < size/sizeof(*ptr); i++) |
| x += ptr[i]; |
| |
| /* force overtly clever gcc to actually compute x */ |
| ptr[0] = x; |
| |
| munmap(base, size); |
| |
| /* mmap read */ |
| gettimeofday(&start, NULL); |
| for (loop = 0; loop < 1000; loop++) { |
| base = gem_mmap__cpu(fd, handle, 0, size, PROT_READ | PROT_WRITE); |
| ptr = base; |
| x = 0; |
| |
| for (i = 0; i < size/sizeof(*ptr); i++) |
| x += ptr[i]; |
| |
| /* force overtly clever gcc to actually compute x */ |
| ptr[0] = x; |
| |
| munmap(base, size); |
| } |
| gettimeofday(&end, NULL); |
| igt_info("Time to read %dk through a CPU map: %7.3fµs\n", |
| size/1024, elapsed(&start, &end, loop)); |
| |
| /* mmap write */ |
| gettimeofday(&start, NULL); |
| for (loop = 0; loop < 1000; loop++) { |
| base = gem_mmap__cpu(fd, handle, 0, size, PROT_READ | PROT_WRITE); |
| ptr = base; |
| |
| for (i = 0; i < size/sizeof(*ptr); i++) |
| ptr[i] = i; |
| |
| munmap(base, size); |
| } |
| gettimeofday(&end, NULL); |
| igt_info("Time to write %dk through a CPU map: %7.3fµs\n", |
| size/1024, elapsed(&start, &end, loop)); |
| |
| gettimeofday(&start, NULL); |
| for (loop = 0; loop < 1000; loop++) { |
| base = gem_mmap__cpu(fd, handle, 0, size, PROT_READ | PROT_WRITE); |
| memset(base, 0, size); |
| munmap(base, size); |
| } |
| gettimeofday(&end, NULL); |
| igt_info("Time to clear %dk through a CPU map: %7.3fµs\n", |
| size/1024, elapsed(&start, &end, loop)); |
| |
| gettimeofday(&start, NULL); |
| base = gem_mmap__cpu(fd, handle, 0, size, PROT_READ | PROT_WRITE); |
| for (loop = 0; loop < 1000; loop++) |
| memset(base, 0, size); |
| munmap(base, size); |
| gettimeofday(&end, NULL); |
| igt_info("Time to clear %dk through a cached CPU map: %7.3fµs\n", |
| size/1024, elapsed(&start, &end, loop)); |
| } |
| |
| /* CPU pwrite */ |
| gettimeofday(&start, NULL); |
| for (loop = 0; loop < 1000; loop++) |
| gem_write(fd, handle, 0, buf, size); |
| gettimeofday(&end, NULL); |
| igt_info("Time to pwrite %dk through the CPU: %7.3fµs\n", |
| size/1024, elapsed(&start, &end, loop)); |
| |
| /* CPU pread */ |
| gettimeofday(&start, NULL); |
| for (loop = 0; loop < 1000; loop++) |
| gem_read(fd, handle, 0, buf, size); |
| gettimeofday(&end, NULL); |
| igt_info("Time to pread %dk through the CPU: %7.3fµs\n", |
| size/1024, elapsed(&start, &end, loop)); |
| } |
| |
| /* prefault into gtt */ |
| { |
| uint32_t *base = gem_mmap(fd, handle, size, PROT_READ | PROT_WRITE); |
| volatile uint32_t *ptr = base; |
| int x = 0; |
| |
| for (i = 0; i < size/sizeof(*ptr); i++) |
| x += ptr[i]; |
| |
| /* force overtly clever gcc to actually compute x */ |
| ptr[0] = x; |
| |
| munmap(base, size); |
| } |
| /* mmap read */ |
| gettimeofday(&start, NULL); |
| for (loop = 0; loop < 1000; loop++) { |
| uint32_t *base = gem_mmap(fd, handle, size, PROT_READ | PROT_WRITE); |
| volatile uint32_t *ptr = base; |
| int x = 0; |
| |
| for (i = 0; i < size/sizeof(*ptr); i++) |
| x += ptr[i]; |
| |
| /* force overtly clever gcc to actually compute x */ |
| ptr[0] = x; |
| |
| munmap(base, size); |
| } |
| gettimeofday(&end, NULL); |
| igt_info("Time to read %dk through a GTT map: %7.3fµs\n", |
| size/1024, elapsed(&start, &end, loop)); |
| |
| /* mmap write */ |
| gettimeofday(&start, NULL); |
| for (loop = 0; loop < 1000; loop++) { |
| uint32_t *base = gem_mmap(fd, handle, size, PROT_READ | PROT_WRITE); |
| volatile uint32_t *ptr = base; |
| |
| for (i = 0; i < size/sizeof(*ptr); i++) |
| ptr[i] = i; |
| |
| munmap(base, size); |
| } |
| gettimeofday(&end, NULL); |
| igt_info("Time to write %dk through a GTT map: %7.3fµs\n", |
| size/1024, elapsed(&start, &end, loop)); |
| |
| /* mmap clear */ |
| gettimeofday(&start, NULL); |
| for (loop = 0; loop < 1000; loop++) { |
| uint32_t *base = gem_mmap(fd, handle, size, PROT_READ | PROT_WRITE); |
| memset(base, 0, size); |
| munmap(base, size); |
| } |
| gettimeofday(&end, NULL); |
| igt_info("Time to clear %dk through a GTT map: %7.3fµs\n", |
| size/1024, elapsed(&start, &end, loop)); |
| |
| gettimeofday(&start, NULL);{ |
| uint32_t *base = gem_mmap(fd, handle, size, PROT_READ | PROT_WRITE); |
| for (loop = 0; loop < 1000; loop++) |
| memset(base, 0, size); |
| munmap(base, size); |
| } gettimeofday(&end, NULL); |
| igt_info("Time to clear %dk through a cached GTT map: %7.3fµs\n", |
| size/1024, elapsed(&start, &end, loop)); |
| |
| /* mmap read */ |
| gettimeofday(&start, NULL); |
| for (loop = 0; loop < 1000; loop++) { |
| uint32_t *base = gem_mmap(fd, handle, size, PROT_READ | PROT_WRITE); |
| volatile uint32_t *ptr = base; |
| int x = 0; |
| |
| for (i = 0; i < size/sizeof(*ptr); i++) |
| x += ptr[i]; |
| |
| /* force overtly clever gcc to actually compute x */ |
| ptr[0] = x; |
| |
| munmap(base, size); |
| } |
| gettimeofday(&end, NULL); |
| igt_info("Time to read %dk (again) through a GTT map: %7.3fµs\n", |
| size/1024, 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, size); |
| gettimeofday(&end, NULL); |
| igt_info("Time to pwrite %dk through the GTT: %7.3fµs\n", |
| size/1024, elapsed(&start, &end, loop)); |
| |
| /* GTT pread */ |
| gettimeofday(&start, NULL); |
| for (loop = 0; loop < 1000; loop++) |
| gem_read(fd, handle, 0, buf, size); |
| gettimeofday(&end, NULL); |
| igt_info("Time to pread %dk through the GTT: %7.3fµs\n", |
| size/1024, elapsed(&start, &end, loop)); |
| |
| /* GTT pwrite, including clflush */ |
| gettimeofday(&start, NULL); |
| for (loop = 0; loop < 1000; loop++) { |
| gem_write(fd, handle, 0, buf, size); |
| gem_sync(fd, handle); |
| } |
| gettimeofday(&end, NULL); |
| igt_info("Time to pwrite %dk through the GTT (clflush): %7.3fµs\n", |
| size/1024, elapsed(&start, &end, loop)); |
| |
| /* GTT pread, including clflush */ |
| gettimeofday(&start, NULL); |
| for (loop = 0; loop < 1000; loop++) { |
| gem_sync(fd, handle); |
| gem_read(fd, handle, 0, buf, size); |
| } |
| gettimeofday(&end, NULL); |
| igt_info("Time to pread %dk through the GTT (clflush): %7.3fµs\n", |
| size/1024, elapsed(&start, &end, loop)); |
| |
| /* partial writes */ |
| igt_info("Now partial writes.\n"); |
| size /= 4; |
| |
| /* partial GTT pwrite, including clflush */ |
| gettimeofday(&start, NULL); |
| for (loop = 0; loop < 1000; loop++) { |
| gem_write(fd, handle, 0, buf, size); |
| gem_sync(fd, handle); |
| } |
| gettimeofday(&end, NULL); |
| igt_info("Time to pwrite %dk through the GTT (clflush): %7.3fµs\n", |
| size/1024, elapsed(&start, &end, loop)); |
| |
| /* partial GTT pread, including clflush */ |
| gettimeofday(&start, NULL); |
| for (loop = 0; loop < 1000; loop++) { |
| gem_sync(fd, handle); |
| gem_read(fd, handle, 0, buf, size); |
| } |
| gettimeofday(&end, NULL); |
| igt_info("Time to pread %dk through the GTT (clflush): %7.3fµs\n", |
| size/1024, elapsed(&start, &end, loop)); |
| |
| size *= 4; |
| } |
| |
| } |
| |
| gem_close(fd, handle); |
| close(fd); |
| |
| igt_exit(); |
| } |