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Diffstat (limited to 'tests/gem_cs_prefetch.c')
| -rw-r--r-- | tests/gem_cs_prefetch.c | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/tests/gem_cs_prefetch.c b/tests/gem_cs_prefetch.c new file mode 100644 index 00000000..4fb2fc4e --- /dev/null +++ b/tests/gem_cs_prefetch.c @@ -0,0 +1,169 @@ +/* + * 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: + * Daniel Vetter <daniel.vetter@ffwll.ch> + * + */ + +/* + * Testcase: Test the CS prefetch behaviour on batches + * + * Historically the batch prefetcher doesn't check whether it's crossing page + * boundaries and likes to throw up when it gets a pagefault in return for his + * over-eager behaviour. Check for this. + */ +#include <stdlib.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/time.h> +#include "drm.h" +#include "i915_drm.h" +#include "drmtest.h" +#include "intel_bufmgr.h" +#include "intel_batchbuffer.h" +#include "intel_gpu_tools.h" + +static drm_intel_bufmgr *bufmgr; +struct intel_batchbuffer *batch; + +static void exec(int fd, uint32_t handle) +{ + struct drm_i915_gem_execbuffer2 execbuf; + struct drm_i915_gem_exec_object2 gem_exec[1]; + int ret = 0; + + gem_exec[0].handle = handle; + gem_exec[0].relocation_count = 0; + gem_exec[0].relocs_ptr = 0; + gem_exec[0].alignment = 0; + gem_exec[0].offset = 0; + gem_exec[0].flags = 0; + gem_exec[0].rsvd1 = 0; + gem_exec[0].rsvd2 = 0; + + execbuf.buffers_ptr = (uintptr_t)gem_exec; + execbuf.buffer_count = 1; + execbuf.batch_start_offset = 0; + execbuf.batch_len = 4096; + execbuf.cliprects_ptr = 0; + execbuf.num_cliprects = 0; + execbuf.DR1 = 0; + execbuf.DR4 = 0; + execbuf.flags = 0; + execbuf.rsvd1 = 0; + execbuf.rsvd2 = 0; + + ret = drmIoctl(fd, + DRM_IOCTL_I915_GEM_EXECBUFFER2, + &execbuf); + gem_sync(fd, handle); + assert(ret == 0); +} + +int main(int argc, char **argv) +{ + uint32_t batch_end[4] = {MI_BATCH_BUFFER_END, 0, 0, 0}; + int fd, i, ret; + uint64_t aper_size; + int count; + drm_intel_bo *sample_batch_bo; + + fd = drm_open_any(); + + bufmgr = drm_intel_bufmgr_gem_init(fd, 4096); + if (!bufmgr) { + fprintf(stderr, "failed to init libdrm\n"); + exit(-1); + } + + drm_intel_bufmgr_gem_enable_reuse(bufmgr); + + aper_size = gem_aperture_size(fd); + + /* presume a big per-bo overhead */ + if (intel_get_total_ram_mb() < (aper_size / (1024*1024)) * 3 / 2) { + fprintf(stderr, "not enough mem to run test\n"); + return 77; + } + + count = aper_size / 4096; + + batch = intel_batchbuffer_alloc(bufmgr, intel_get_drm_devid(fd)); + assert(batch); + + sample_batch_bo = drm_intel_bo_alloc(bufmgr, "", 4096, 4096); + assert(sample_batch_bo); + ret = drm_intel_bo_subdata(sample_batch_bo, 4096-sizeof(batch_end), + sizeof(batch_end), batch_end); + assert(ret == 0); + + /* fill the entire gart with batches and run them */ + for (i = 0; i < count; i++) { + drm_intel_bo *batch_bo; + + batch_bo = drm_intel_bo_alloc(bufmgr, "", 4096, 4096); + assert(batch_bo); + + /* copy the sample batch with the gpu to the new one, so that we + * also test the unmappable part of the gtt. */ + BEGIN_BATCH(8); + OUT_BATCH(XY_SRC_COPY_BLT_CMD | + XY_SRC_COPY_BLT_WRITE_ALPHA | + XY_SRC_COPY_BLT_WRITE_RGB); + OUT_BATCH((3 << 24) | /* 32 bits */ + (0xcc << 16) | /* copy ROP */ + 4096); + OUT_BATCH(0); /* dst y1,x1 */ + OUT_BATCH((1 << 16) | 1024); + OUT_RELOC(batch_bo, I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER, 0); + OUT_BATCH((0 << 16) | 0); /* src x1, y1 */ + OUT_BATCH(4096); + OUT_RELOC(sample_batch_bo, I915_GEM_DOMAIN_RENDER, 0, 0); + ADVANCE_BATCH(); + + intel_batchbuffer_flush(batch); + if (i % 100 == 0) + gem_sync(fd, batch_bo->handle); + + drm_intel_bo_disable_reuse(batch_bo); + + /* launch the newly created batch */ + exec(fd, batch_bo->handle); + + // leak buffers + //drm_intel_bo_unreference(batch_bo); + drmtest_progress("gem_cs_prefetch: ", i, count); + } + + fprintf(stderr, "Test suceeded, cleanup up - this might take a while.\n"); + drm_intel_bufmgr_destroy(bufmgr); + + close(fd); + + return 0; +} |