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https://github.com/tiagovignatti/intel-gpu-tools.git
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d9fb72e266
By adding another testcase that follows up with a gpu read. This checks whether the kernel properly tracks the pending write and doesn't lose it (or sync up to the wrong seqno). For some odd reason only the cpu mmap variant blows up, the gtt one works here. I need to look into that some more. Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
146 lines
4.2 KiB
C
146 lines
4.2 KiB
C
/*
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* Copyright © 2009,2012 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*
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* Authors:
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* Eric Anholt <eric@anholt.net>
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* Chris Wilson <chris@chris-wilson.co.uk>
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*
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*/
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/** @file gem_cpu_concurrent_blit.c
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*
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* This is a test of GTT mmap read/write behavior when writing to active
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* buffers.
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <assert.h>
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#include <fcntl.h>
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#include <inttypes.h>
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#include <errno.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include "drm.h"
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#include "i915_drm.h"
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#include "drmtest.h"
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#include "intel_bufmgr.h"
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#include "intel_batchbuffer.h"
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#include "intel_gpu_tools.h"
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static void
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set_bo(drm_intel_bo *bo, uint32_t val, int width, int height)
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{
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int size = width * height;
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uint32_t *vaddr;
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drm_intel_gem_bo_start_gtt_access(bo, true);
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vaddr = bo->virtual;
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while (size--)
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*vaddr++ = val;
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}
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static void
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cmp_bo(drm_intel_bo *bo, uint32_t val, int width, int height)
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{
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int size = width * height;
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uint32_t *vaddr;
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drm_intel_gem_bo_start_gtt_access(bo, false);
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vaddr = bo->virtual;
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while (size--)
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assert(*vaddr++ == val);
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}
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static drm_intel_bo *
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create_bo(drm_intel_bufmgr *bufmgr, uint32_t val, int width, int height)
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{
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drm_intel_bo *bo;
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bo = drm_intel_bo_alloc(bufmgr, "bo", 4*width*height, 0);
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assert(bo);
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/* gtt map doesn't have a write parameter, so just keep the mapping
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* around (to avoid the set_domain with the gtt write domain set) and
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* manually tell the kernel when we start access the gtt. */
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drm_intel_gem_bo_map_gtt(bo);
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set_bo(bo, val, width, height);
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return bo;
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}
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int
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main(int argc, char **argv)
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{
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drm_intel_bufmgr *bufmgr;
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struct intel_batchbuffer *batch;
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int num_buffers = 128, max;
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drm_intel_bo *src[128], *dst[128], *dummy;
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int width = 512, height = 512;
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int fd;
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int i;
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fd = drm_open_any();
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max = gem_aperture_size (fd) / (1024 * 1024) / 2;
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if (num_buffers > max)
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num_buffers = max;
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bufmgr = drm_intel_bufmgr_gem_init(fd, 4096);
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drm_intel_bufmgr_gem_enable_reuse(bufmgr);
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batch = intel_batchbuffer_alloc(bufmgr, intel_get_drm_devid(fd));
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for (i = 0; i < num_buffers; i++) {
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src[i] = create_bo(bufmgr, i, width, height);
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dst[i] = create_bo(bufmgr, ~i, width, height);
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}
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dummy = create_bo(bufmgr, 0, width, height);
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/* try to overwrite the source values */
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for (i = 0; i < num_buffers; i++)
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intel_copy_bo(batch, dst[i], src[i], width, height);
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for (i = num_buffers; i--; )
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set_bo(src[i], 0xdeadbeef, width, height);
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for (i = 0; i < num_buffers; i++)
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cmp_bo(dst[i], i, width, height);
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/* try to read the results before the copy completes */
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for (i = 0; i < num_buffers; i++)
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intel_copy_bo(batch, dst[i], src[i], width, height);
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for (i = num_buffers; i--; )
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cmp_bo(dst[i], 0xdeadbeef, width, height);
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/* and finally try to trick the kernel into loosing the pending write */
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for (i = num_buffers; i--; )
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set_bo(src[i], 0xabcdabcd, width, height);
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for (i = 0; i < num_buffers; i++)
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intel_copy_bo(batch, dst[i], src[i], width, height);
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for (i = num_buffers; i--; )
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intel_copy_bo(batch, dummy, dst[i], width, height);
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for (i = num_buffers; i--; )
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cmp_bo(dst[i], 0xabcdabcd, width, height);
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return 0;
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}
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