tests: add store dword tests

Add a couple of simple store dword tests to test memory coherence.

gem_storedw_loop simply executes a batch that continually stores an
incremented value to a target buffer object, checking the results after
each batch completes.

gem_storedw_batches_loop does the same thing, but creates a new command
batch buffer for each iteration, which can exercise the buffer creation
code.  This test is based on one from Andrzej Kacprowski from Intel.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

1 files changed, 156 insertions, 0 deletions

diff --git a/tests/gem_storedw_batches_loop.c b/tests/gem_storedw_batches_loop.c
new file mode 100644
index 00000000..f5907c03
--- /dev/null
+++ b/tests/gem_storedw_batches_loop.c
@@ -0,0 +1,156 @@
+/*
+ * Copyright © 2009 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:
+ *    Eric Anholt <eric@anholt.net>
+ *    Jesse Barnes <jbarnes@virtuousgeek.org> (based on gem_bad_blit.c)
+ *
+ */
+
+#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;
+static drm_intel_bo *target_bo;
+
+/* Like the store dword test, but we create new command buffers each time */
+static void
+store_dword_loop(void)
+{
+	int cmd, i, val = 0, ret;
+	uint32_t *buf;
+	drm_intel_bo *cmd_bo;
+
+	cmd = MI_STORE_DWORD_IMM | MI_MEM_VIRTUAL;
+
+	for (i = 0; i < 0x10000; i++) {
+		cmd_bo = drm_intel_bo_alloc(bufmgr, "cmd bo", 4096, 4096);
+		if (!cmd_bo) {
+			fprintf(stderr, "failed to alloc cmd bo\n");
+			exit(-1);
+		}
+
+		drm_intel_bo_map(cmd_bo, 1);
+		buf = cmd_bo->virtual;
+
+		buf[0] = cmd;
+		buf[1] = 0;
+		buf[2] = target_bo->offset;
+		buf[3] = 0x42000000 + val;
+
+		ret = drm_intel_bo_references(cmd_bo, target_bo);
+		if (ret) {
+			fprintf(stderr, "failed to link cmd & target bos\n");
+			exit(-1);
+		}
+
+		ret = drm_intel_bo_emit_reloc(cmd_bo, 8, target_bo, 0,
+					      I915_GEM_DOMAIN_RENDER,
+					      I915_GEM_DOMAIN_RENDER);
+		if (ret) {
+			fprintf(stderr, "failed to emit reloc\n");
+			exit(-1);
+		}
+
+		buf[4] = MI_BATCH_BUFFER_END;
+		buf[5] = MI_BATCH_BUFFER_END;
+
+		drm_intel_bo_unmap(cmd_bo);
+
+		ret = drm_intel_bo_references(cmd_bo, target_bo);
+		if (ret != 1) {
+			fprintf(stderr, "bad bo reference count: %d\n", ret);
+			exit(-1);
+		}
+
+		ret = drm_intel_bo_exec(cmd_bo, 6 * 4, NULL, 0, 0);
+		if (ret) {
+			fprintf(stderr, "bo exec failed: %d\n", ret);
+			exit(-1);
+		}
+
+		drm_intel_bo_wait_rendering(cmd_bo);
+
+		drm_intel_bo_map(target_bo, 1);
+
+		buf = target_bo->virtual;
+		if (buf[0] != (0x42000000 | val))
+			fprintf(stderr,
+				"value mismatch: cur 0x%08x, stored 0x%08x\n",
+				buf[0], 0x42000000 | val);
+		buf[0] = 0; /* let batch write it again */
+		drm_intel_bo_unmap(target_bo);
+
+		drm_intel_bo_unreference(cmd_bo);
+
+		val++;
+	}
+
+	printf("completed %d writes successfully\n", i);
+}
+
+int main(int argc, char **argv)
+{
+	int fd;
+
+	if (argc != 1) {
+		fprintf(stderr, "usage: %s\n", argv[0]);
+		exit(-1);
+	}
+
+	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);
+
+	target_bo = drm_intel_bo_alloc(bufmgr, "target bo", 4096, 4096);
+	if (!target_bo) {
+		fprintf(stderr, "failed to alloc target buffer\n");
+		exit(-1);
+	}
+
+	store_dword_loop();
+
+	drm_intel_bo_unreference(target_bo);
+	drm_intel_bufmgr_destroy(bufmgr);
+
+	close(fd);
+
+	return 0;
+}