Add intel_error_decode.
A simple variant of intel_gpu_dump that explicitly handles parsing of
i915_error_state.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
diff --git a/tools/intel_error_decode.c b/tools/intel_error_decode.c
new file mode 100644
index 0000000..4dc3d43
--- /dev/null
+++ b/tools/intel_error_decode.c
@@ -0,0 +1,235 @@
+/* -*- c-basic-offset: 4 -*- */
+/*
+ * Copyright © 2007 Intel Corporation
+ * Copyright © 2009 Intel Corporation
+ * Copyright © 2010 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>
+ * Carl Worth <cworth@cworth.org>
+ * Chris Wilson <chris@chris-wilson.co.uk>
+ *
+ */
+
+/** @file intel_decode.c
+ * This file contains code to print out batchbuffer contents in a
+ * human-readable format.
+ *
+ * The current version only supports i915 packets, and only pretty-prints a
+ * subset of them. The intention is for it to make just a best attempt to
+ * decode, but never crash in the process.
+ */
+
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <inttypes.h>
+#include <errno.h>
+#include <sys/stat.h>
+#include <err.h>
+
+#include "intel_decode.h"
+#include "intel_chipset.h"
+#include "intel_gpu_tools.h"
+#include "instdone.h"
+
+static void
+print_instdone (unsigned int instdone, unsigned int instdone1)
+{
+ int i;
+
+ for (i = 0; i < num_instdone_bits; i++) {
+ int busy = 0;
+
+ if (instdone_bits[i].reg == INST_DONE_1) {
+ if (!(instdone1 & instdone_bits[i].bit))
+ busy = 1;
+ } else {
+ if (!(instdone & instdone_bits[i].bit))
+ busy = 1;
+ }
+
+ if (busy)
+ printf(" busy: %s\n", instdone_bits[i].name);
+ }
+}
+
+static void
+read_data_file (const char * filename)
+{
+ FILE *file;
+ int devid = PCI_CHIP_I855_GM;
+ uint32_t *data = NULL;
+ int data_size = 0, count = 0, line_number = 0, matched;
+ char *line = NULL;
+ size_t line_size;
+ uint32_t offset, value;
+ uint32_t gtt_offset = 0, new_gtt_offset;
+ char *buffer_type[2] = { "ringbuffer", "batchbuffer" };
+ int is_batch = 1;
+
+ file = fopen (filename, "r");
+ if (file == NULL) {
+ fprintf (stderr, "Failed to open %s: %s\n",
+ filename, strerror (errno));
+ exit (1);
+ }
+
+ while (getline (&line, &line_size, file) > 0) {
+ line_number++;
+
+ matched = sscanf (line, "--- gtt_offset = 0x%08x\n", &new_gtt_offset);
+ if (matched == 1) {
+ if (count) {
+ printf("%s at 0x%08x:\n", buffer_type[is_batch], gtt_offset);
+ intel_decode (data, count, gtt_offset, devid, 0);
+ count = 0;
+ }
+ gtt_offset = new_gtt_offset;
+ is_batch = 1;
+ continue;
+ }
+
+ matched = sscanf (line, "--- ringbuffer = 0x%08x\n", &new_gtt_offset);
+ if (matched == 1) {
+ if (count) {
+ printf("%s at 0x%08x:\n", buffer_type[is_batch], gtt_offset);
+ intel_decode (data, count, gtt_offset, devid, 0);
+ count = 0;
+ }
+ gtt_offset = new_gtt_offset;
+ is_batch = 0;
+ continue;
+ }
+
+ matched = sscanf (line, "%08x : %08x", &offset, &value);
+ if (matched != 2) {
+ unsigned int reg;
+
+ printf("%s", line);
+
+ matched = sscanf (line, "PCI ID: 0x%04x\n", ®);
+ if (matched)
+ devid = reg;
+
+ matched = sscanf (line, " ACTHD: 0x%08x\n", ®);
+ if (matched)
+ intel_decode_context_set_head_tail(reg, 0xffffffff);
+
+ matched = sscanf (line, " INSTDONE: 0x%08x\n", ®);
+ if (matched)
+ print_instdone (reg, -1);
+
+ matched = sscanf (line, " INSTDONE1: 0x%08x\n", ®);
+ if (matched)
+ print_instdone (-1, reg);
+
+ continue;
+ }
+
+ count++;
+
+ if (count > data_size) {
+ data_size = data_size ? data_size * 2 : 1024;
+ data = realloc (data, data_size * sizeof (uint32_t));
+ if (data == NULL) {
+ fprintf (stderr, "Out of memory.\n");
+ exit (1);
+ }
+ }
+
+ data[count-1] = value;
+ }
+
+ if (count) {
+ printf("%s at 0x%08x:\n", buffer_type[is_batch], gtt_offset);
+ intel_decode (data, count, gtt_offset, devid, 0);
+ }
+
+ free (data);
+ free (line);
+
+ fclose (file);
+}
+
+int
+main (int argc, char *argv[])
+{
+ const char *path;
+ struct stat st;
+ int err;
+
+ if (argc > 2) {
+ fprintf (stderr,
+ "intel_gpu_decode: Parse an Intel GPU i915_error_state\n"
+ "Usage:\n"
+ "\t%s [<file>]\n"
+ "\n"
+ "With no arguments, debugfs-dri-directory is probed for in "
+ "/debug and \n"
+ "/sys/kernel/debug. Otherwise, it may be "
+ "specified. If a file is given,\n"
+ "it is parsed as an GPU dump in the format of "
+ "/debug/dri/0/i915_error_state.\n",
+ argv[0]);
+ return 1;
+ }
+
+ init_instdone_definitions();
+
+ if (argc == 1) {
+ path = "/debug/dri/0";
+ err = stat (path, &st);
+ if (err != 0) {
+ path = "/sys/kernel/debug/dri/0";
+ err = stat (path, &st);
+ if (err != 0) {
+ errx(1,
+ "Couldn't find i915 debugfs directory.\n\n"
+ "Is debugfs mounted? You might try mounting it with a command such as:\n\n"
+ "\tsudo mount -t debugfs debugfs /sys/kernel/debug\n");
+ }
+ }
+ } else {
+ path = argv[1];
+ err = stat (path, &st);
+ if (err != 0) {
+ fprintf (stderr, "Error opening %s: %s\n",
+ path, strerror (errno));
+ exit (1);
+ }
+ }
+
+ if (S_ISDIR (st.st_mode)) {
+ char *filename;
+
+ asprintf (&filename, "%s/i915_error_state", path);
+ read_data_file (filename);
+ free (filename);
+ } else {
+ read_data_file (path);
+ }
+
+ return 0;
+}