/* * 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 * */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include "drm.h" #include "i915_drm.h" #include "drmtest.h" #define MI_BATCH_BUFFER_END (0xA<<23) 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 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 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 void gem_sync(int fd, uint32_t handle) { struct drm_i915_gem_set_domain set_domain; set_domain.handle = handle; set_domain.read_domains = I915_GEM_DOMAIN_GTT; set_domain.write_domain = I915_GEM_DOMAIN_GTT; drmIoctl(fd, DRM_IOCTL_I915_GEM_SET_DOMAIN, &set_domain); } 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 void exec(int fd, uint32_t handle, int loops) { struct drm_i915_gem_execbuffer2 execbuf; struct drm_i915_gem_exec_object2 exec[1]; int ret; exec[0].handle = handle; exec[0].relocation_count = 0; exec[0].relocs_ptr = 0; exec[0].alignment = 0; exec[0].offset = 0; exec[0].flags = 0; exec[0].rsvd1 = 0; exec[0].rsvd2 = 0; execbuf.buffers_ptr = (uintptr_t)exec; execbuf.buffer_count = 1; execbuf.batch_start_offset = 0; execbuf.batch_len = 8; execbuf.cliprects_ptr = 0; execbuf.num_cliprects = 0; execbuf.DR1 = 0; execbuf.DR4 = 0; execbuf.flags = 0; execbuf.rsvd1 = 0; execbuf.rsvd2 = 0; while (loops--) { ret = drmIoctl(fd, DRM_IOCTL_I915_GEM_EXECBUFFER2, &execbuf); } gem_sync(fd, handle); } int main(int argc, char **argv) { uint32_t batch[2] = {MI_BATCH_BUFFER_END}; uint32_t handle; int count; int fd; fd = drm_open_any(); handle = gem_create(fd, 4096); gem_write(fd, handle, 0, batch, sizeof(batch)); for (count = 1; count <= 1<<17; count <<= 1) { struct timeval start, end; gettimeofday(&start, NULL); exec(fd, handle, count); gettimeofday(&end, NULL); printf("Time to exec x %d: %7.3fµs\n", count, elapsed(&start, &end, count)); fflush(stdout); } gem_close(fd, handle); close(fd); return 0; }