| /* |
| * 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> |
| * |
| */ |
| |
| #define _GNU_SOURCE |
| |
| #include <stdlib.h> |
| #include <sys/ioctl.h> |
| #include <stdio.h> |
| #include <string.h> |
| #include <fcntl.h> |
| #include <inttypes.h> |
| #include <drm.h> |
| #include <i915_drm.h> |
| |
| #include "drmtest.h" |
| #include "intel_gpu_tools.h" |
| |
| #define WIDTH 1024 |
| #define HEIGHT 1024 |
| #define OBJECT_SIZE (4*WIDTH*HEIGHT) |
| |
| #define BATCH_SIZE 4096 |
| |
| #define MAX_FENCES 32 |
| |
| /* |
| * Testcase: execbuf fence accounting |
| * |
| * We had a bug where we were falsely accounting upon reservation already |
| * fenced buffers as occupying a fence register even if they did not require |
| * one for the batch. |
| * |
| * We aim to exercise this by performing a sequence of fenced BLT |
| * with 2*num_avail_fence buffers, but alternating which half are fenced in |
| * each command. |
| */ |
| |
| static uint32_t |
| tiled_bo_create (int fd) |
| { |
| uint32_t handle; |
| |
| handle = gem_create(fd, OBJECT_SIZE); |
| |
| gem_set_tiling(fd, handle, I915_TILING_X, WIDTH*4); |
| |
| return handle; |
| } |
| |
| static uint32_t |
| batch_create (int fd) |
| { |
| uint32_t buf[] = { MI_BATCH_BUFFER_END, 0 }; |
| uint32_t batch_handle; |
| |
| batch_handle = gem_create(fd, BATCH_SIZE); |
| |
| gem_write(fd, batch_handle, 0, buf, sizeof(buf)); |
| |
| return batch_handle; |
| } |
| |
| static int get_num_fences(int fd) |
| { |
| int val; |
| |
| val = gem_available_fences(fd); |
| |
| printf ("total %d fences\n", val); |
| igt_assert(val > 4); |
| |
| return val; |
| } |
| |
| static void fill_reloc(struct drm_i915_gem_relocation_entry *reloc, uint32_t handle) |
| { |
| reloc->offset = 2 * sizeof(uint32_t); |
| reloc->target_handle = handle; |
| reloc->read_domains = I915_GEM_DOMAIN_RENDER; |
| reloc->write_domain = 0; |
| } |
| |
| static void run_test(int fd, int num_fences, int expected_errno) |
| { |
| struct drm_i915_gem_execbuffer2 execbuf[2]; |
| struct drm_i915_gem_exec_object2 exec[2][2*MAX_FENCES+3]; |
| struct drm_i915_gem_relocation_entry reloc[2*MAX_FENCES+2]; |
| |
| int i, n; |
| int loop = 1000; |
| |
| memset(execbuf, 0, sizeof(execbuf)); |
| memset(exec, 0, sizeof(exec)); |
| memset(reloc, 0, sizeof(reloc)); |
| |
| for (n = 0; n < 2*num_fences; n++) { |
| uint32_t handle = tiled_bo_create(fd); |
| exec[1][2*num_fences - n-1].handle = exec[0][n].handle = handle; |
| fill_reloc(&reloc[n], handle); |
| } |
| |
| for (i = 0; i < 2; i++) { |
| for (n = 0; n < num_fences; n++) |
| exec[i][n].flags = EXEC_OBJECT_NEEDS_FENCE; |
| |
| exec[i][2*num_fences].handle = batch_create(fd); |
| exec[i][2*num_fences].relocs_ptr = (uintptr_t)reloc; |
| exec[i][2*num_fences].relocation_count = 2*num_fences; |
| |
| execbuf[i].buffers_ptr = (uintptr_t)exec[i]; |
| execbuf[i].buffer_count = 2*num_fences+1; |
| execbuf[i].batch_len = 2*sizeof(uint32_t); |
| } |
| |
| do { |
| int ret; |
| |
| ret = drmIoctl(fd, |
| DRM_IOCTL_I915_GEM_EXECBUFFER2, |
| &execbuf[0]); |
| igt_assert(expected_errno ? |
| ret < 0 && errno == expected_errno : |
| ret == 0); |
| |
| ret = drmIoctl(fd, |
| DRM_IOCTL_I915_GEM_EXECBUFFER2, |
| &execbuf[1]); |
| igt_assert(expected_errno ? |
| ret < 0 && errno == expected_errno : |
| ret == 0); |
| } while (--loop); |
| } |
| |
| int |
| main(int argc, char **argv) |
| { |
| int fd; |
| int num_fences; |
| uint32_t devid; |
| |
| igt_skip_on_simulation(); |
| |
| fd = drm_open_any(); |
| num_fences = get_num_fences(fd); |
| devid = intel_get_drm_devid(fd); |
| |
| igt_assert(num_fences <= MAX_FENCES); |
| |
| run_test(fd, num_fences - 2, 0); |
| run_test(fd, num_fences + 1, intel_gen(devid) >= 4 ? 0 : EDEADLK); |
| |
| close(fd); |
| |
| return 0; |
| } |