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authorDaniel Vetter <daniel.vetter@ffwll.ch>2012-01-24 18:05:11 +0100
committerDaniel Vetter <daniel.vetter@ffwll.ch>2012-01-24 23:03:12 +0100
commit7492f97cde0a0b86b307637858c1d5efbadd2d06 (patch)
tree9b0bd09e3f5a59270eda0a88eb453f371e551315 /tests/gem_cs_prefetch.c
parentca10c7231da5fe00be52c6d5be2d053637c07467 (diff)
tests: add gem_cs_prefetch
Tested-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'tests/gem_cs_prefetch.c')
-rw-r--r--tests/gem_cs_prefetch.c167
1 files changed, 167 insertions, 0 deletions
diff --git a/tests/gem_cs_prefetch.c b/tests/gem_cs_prefetch.c
new file mode 100644
index 00000000..d425ae9d
--- /dev/null
+++ b/tests/gem_cs_prefetch.c
@@ -0,0 +1,167 @@
+/*
+ * 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[2] = {MI_BATCH_BUFFER_END};
+ 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);
+ }
+
+ drm_intel_bufmgr_destroy(bufmgr);
+
+ close(fd);
+
+ return 0;
+}