intel: Add a regression test program for intel_decode.c.

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>

3 files changed, 196 insertions, 0 deletions

diff --git a/intel/.gitignore b/intel/.gitignore
new file mode 100644
index 00000000..528b4086
--- /dev/null
+++ b/intel/.gitignore
@@ -0,0 +1 @@
+test_decode
diff --git a/intel/Makefile.am b/intel/Makefile.am
index 801210f0..2d3d8c4c 100644
--- a/intel/Makefile.am
+++ b/intel/Makefile.am
@@ -54,4 +54,9 @@ libdrm_intelincludedir = ${includedir}/libdrm
 libdrm_intelinclude_HEADERS = intel_bufmgr.h \
 			      intel_debug.h
 
+# This may be interesting even outside of "make check", due to the -dump option.
+noinst_PROGRAMS = test_decode
+
+test_decode_LDADD = libdrm_intel.la
+
 pkgconfig_DATA = libdrm_intel.pc
diff --git a/intel/test_decode.c b/intel/test_decode.c
new file mode 100644
index 00000000..d41b0b26
--- /dev/null
+++ b/intel/test_decode.c
@@ -0,0 +1,190 @@
+/*
+ * 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.
+ */
+
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+#include <err.h>
+
+#include "config.h"
+#include "intel_bufmgr.h"
+#include "intel_chipset.h"
+
+#define HW_OFFSET 0x12300000
+
+static void
+usage(void)
+{
+	fprintf(stderr, "usage:\n");
+	fprintf(stderr, "  test_decode <batch>\n");
+	fprintf(stderr, "  test_decode <batch> -dump\n");
+	exit(1);
+}
+
+static void
+read_file(const char *filename, void **ptr, size_t *size)
+{
+	int fd, ret;
+	struct stat st;
+
+	fd = open(filename, O_RDONLY);
+	if (fd == -1)
+		errx(1, "couldn't open `%s'", filename);
+
+	ret = fstat(fd, &st);
+	if (ret)
+		errx(1, "couldn't stat `%s'", filename);
+
+	*size = st.st_size;
+	*ptr = mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, fd, 0);
+	if (*ptr == MAP_FAILED)
+		errx(1, "couldn't map `%s'", filename);
+
+	close(fd);
+}
+
+static void
+dump_batch(struct drm_intel_decode *ctx, const char *batch_filename)
+{
+	void *batch_ptr;
+	size_t batch_size;
+
+	read_file(batch_filename, &batch_ptr, &batch_size);
+
+	drm_intel_decode_set_batch_pointer(ctx, batch_ptr, HW_OFFSET,
+					   batch_size / 4);
+	drm_intel_decode_set_output_file(ctx, stdout);
+
+	drm_intel_decode(ctx);
+}
+
+static void
+compare_batch(struct drm_intel_decode *ctx, const char *batch_filename)
+{
+	FILE *out = NULL;
+	void *ptr, *ref_ptr, *batch_ptr;
+	size_t size, ref_size, batch_size;
+	const char *ref_suffix = "-ref.txt";
+	char *ref_filename;
+
+	ref_filename = malloc(strlen(batch_filename) + strlen(ref_suffix) + 1);
+	sprintf(ref_filename, "%s%s", batch_filename, ref_suffix);
+
+	/* Read the batch and reference. */
+	read_file(batch_filename, &batch_ptr, &batch_size);
+	read_file(ref_filename, &ref_ptr, &ref_size);
+
+	/* Set up our decode output in memory, because I don't want to
+	 * figure out how to output to a file in a safe and sane way
+	 * inside of an automake project's test infrastructure.
+	 */
+#ifdef HAVE_OPEN_MEMSTREAM
+	out = open_memstream((char **)&ptr, &size);
+#else
+	fprintf(stderr, "platform lacks open_memstream, skipping.\n");
+	exit(77);
+#endif
+
+	drm_intel_decode_set_batch_pointer(ctx, batch_ptr, HW_OFFSET,
+					   batch_size / 4);
+	drm_intel_decode_set_output_file(ctx, out);
+
+	drm_intel_decode(ctx);
+
+	if (strcmp(ref_ptr, ptr) != 0) {
+		fprintf(stderr, "Decode mismatch with reference `%s'.\n",
+			ref_filename);
+		fprintf(stderr, "You can dump the new output using:\n");
+		fprintf(stderr, "  test_decode \"%s\" -dump\n", batch_filename);
+		exit(1);
+	}
+
+	fclose(out);
+	free(ref_filename);
+	free(ptr);
+}
+
+static uint16_t
+infer_devid(const char *batch_filename)
+{
+	struct {
+		const char *name;
+		uint16_t devid;
+	} chipsets[] = {
+		{ "830",  0x3577},
+		{ "855",  0x3582},
+		{ "945",  0x2772},
+		{ "gen4", 0x2a02 },
+		{ "gm45", 0x2a42 },
+		{ "gen5", PCI_CHIP_ILD_G },
+		{ "gen6", PCI_CHIP_SANDYBRIDGE_GT2 },
+		{ "gen7", PCI_CHIP_IVYBRIDGE_GT2 },
+	};
+	int i;
+
+	for (i = 0; chipsets[i].name != NULL; i++) {
+		if (strstr(batch_filename, chipsets[i].name))
+			return chipsets[i].devid;
+	}
+
+	fprintf(stderr, "Couldn't guess chipset id from batch filename `%s'.\n",
+		batch_filename);
+	fprintf(stderr, "Must be contain one of:\n");
+	for (i = 0; chipsets[i].name != NULL; i++) {
+		fprintf(stderr, "  %s\n", chipsets[i].name);
+	}
+	exit(1);
+}
+
+int
+main(int argc, char **argv)
+{
+	uint16_t devid;
+	struct drm_intel_decode *ctx;
+
+	if (argc < 2)
+		usage();
+
+
+	devid = infer_devid(argv[1]);
+
+	ctx = drm_intel_decode_context_alloc(devid);
+
+	if (argc == 3) {
+		if (strcmp(argv[2], "-dump") == 0)
+			dump_batch(ctx, argv[1]);
+		else
+			usage();
+	} else {
+		compare_batch(ctx, argv[1]);
+	}
+
+	drm_intel_decode_context_free(ctx);
+
+	return 0;
+}