+++ /dev/null
-/* -*- c-basic-offset: 4 -*- */
-/*
- * Copyright © 2007 Intel Corporation
- * 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>
- * Carl Worth <cworth@cworth.org>
- *
- */
-
-/** @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);
- }
-}
-
-/* Read a data file of the following form:
- *
- * Offset0 : Data0
- * Offset1 : Data1
- * ...
- *
- * Where both Offset and Data are ASCII representations of 8-digit
- * hexadecimal numbers.
- *
- * After this function returns, *data will point to an allocated
- * buffer, (which should be free()ed by the caller), and *count will
- * indicate the number of data values read from the filename.
- *
- * Note: The values of the offset field are currently ignored. There
- * are no guarantees that errors will be detected at all, (but for any
- * error that is detected, this function is likely to just call
- * exit()).
- */
-static void
-read_data_file (uint32_t devid, const char * filename, int is_batch)
-{
- FILE *file;
- 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" };
-
- 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, " 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);
-}
-
-/* Grab the head/tail pointers we know about so we can annotate the batch
- * and ring dumps.
- */
-static void
-parse_ringbuffer_info(const char *filename,
- uint32_t *ring_head, uint32_t *ring_tail,
- uint32_t *acthd)
-{
- FILE *file;
- int matched;
- char *line = NULL;
- size_t line_size;
-
- *ring_head = 0xffffffff;
- *ring_tail = 0xffffffff;
- *acthd = 0xffffffff;
-
- 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) {
- uint32_t val;
-
- matched = sscanf (line, "RingHead : %x\n", &val);
- if (matched == 1) {
- *ring_head = val;
- continue;
- }
-
- matched = sscanf (line, "RingTail : %x\n", &val);
- if (matched == 1) {
- *ring_tail = val;
- continue;
- }
-
- matched = sscanf (line, "Acthd : %x\n", &val);
- if (matched == 1) {
- *acthd = val;
- continue;
- }
- }
-
- free (line);
-
- fclose (file);
-}
-
-/* By default, we grab the state of the current hardware
- * by looking into the various debugfs nodes and grabbing all the
- * relevant data.
- *
- * A secondary mode is to interpret a file with data captured
- * previously. This is less interesting since a single file won't have
- * compelte information, (we want both ringbuffer plus batchbuffer as
- * well as error-status registers, etc). But for now, we'll start with
- * this secondary mode as we let this program mature.
- */
-int
-main (int argc, char *argv[])
-{
- char filename[4096];
- const char *path;
- struct stat st;
- int err;
- uint32_t devid = 0;
- uint32_t instdone, instdone1 = 0;
- struct pci_device *pci_dev;
-
- if (argc > 2 && strcmp(argv[1], "--devid") == 0) {
- char *tmp = argv[0];
- devid = atoi(argv[2]);
- argc -= 2;
- argv += 2;
- argv[0] = tmp;
- }
-
- if (argc > 2) {
- fprintf (stderr,
- "intel_gpu_dump: Parse an Intel GPU ringbuffer/batchbuffer state\n"
- "\n"
- "Usage:\n"
- "\t%s\n"
- "\t%s <debugfs-dri-directory>\n"
- "\t%s <data-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 a batchbuffer in the format of "
- "/debug/dri/0/i915_batchbuffers.\n",
- argv[0], argv[0], argv[0]);
- return 1;
- }
-
- if (devid == 0) {
- pci_dev = intel_get_pci_device();
- devid = pci_dev->device_id;
- intel_get_mmio(pci_dev);
- }
-
- init_instdone_definitions(devid);
-
- 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)) {
- uint32_t ring_head, ring_tail, acthd;
-
- snprintf(filename, sizeof(filename),
- "%s/i915_ringbuffer_info", path);
-
- err = stat(filename, &st);
- if (err != 0) {
- fprintf (stderr,
- "Error opening %s: %s\n\n"
- "Perhaps your i915 kernel driver has no support for "
- "dumping batchbuffer data?\n"
- "(In kernels prior to 2.6.30 this requires "
- "manually-applied patches.)\n",
- filename, strerror (errno));
- exit (1);
- }
-
- parse_ringbuffer_info(filename, &ring_head, &ring_tail, &acthd);
-
- printf("ACTHD: 0x%08x\n", acthd);
- printf("EIR: 0x%08x\n", INREG(EIR));
- printf("EMR: 0x%08x\n", INREG(EMR));
- printf("ESR: 0x%08x\n", INREG(ESR));
- printf("PGTBL_ER: 0x%08x\n", INREG(PGTBL_ER));
-
- if (IS_GEN6(devid) || IS_GEN7(devid)) {
- instdone = INREG(GEN6_INSTDONE_1);
- instdone1 = INREG(GEN6_INSTDONE_2);
-
- printf("IPEHR: 0x%08x\n", INREG(IPEHR_I965));
- printf("IPEIR: 0x%08x\n", INREG(IPEIR_I965));
- printf("INSTDONE1: 0x%08x\n", instdone);
- printf("INSTDONE2: 0x%08x\n", instdone1);
- } else if (IS_965(devid)) {
- instdone = INREG(INST_DONE_I965);
- instdone1 = INREG(INST_DONE_1);
-
- printf("IPEHR: 0x%08x\n", INREG(IPEHR_I965));
- printf("IPEIR: 0x%08x\n", INREG(IPEIR_I965));
- printf("INSTDONE: 0x%08x\n", instdone);
- printf("INSTDONE1: 0x%08x\n", instdone1);
- } else {
- instdone = INREG(INST_DONE);
-
- printf("IPEHR: 0x%08x\n", INREG(IPEHR));
- printf("IPEIR: 0x%08x\n", INREG(IPEIR));
- printf("INSTDONE: 0x%08x\n", instdone);
- }
-
- print_instdone (instdone, instdone1);
-
- snprintf(filename, sizeof(filename), "%s/i915_batchbuffers", path);
- intel_decode_context_set_head_tail(acthd, 0xffffffff);
- read_data_file (devid, filename, 1);
-
- snprintf(filename, sizeof(filename), "%s/i915_ringbuffer_data", path);
- intel_decode_context_set_head_tail(ring_head, ring_tail);
- printf("Ringbuffer: ");
- printf("Reminder: head pointer is GPU read, tail pointer is CPU "
- "write\n");
- read_data_file (devid, filename, 0);
-
- snprintf(filename, sizeof(filename),
- "%s/i915_blt_ringbuffer_info", path);
- if (stat(filename, &st) == 0) {
- parse_ringbuffer_info(filename, &ring_head, &ring_tail, &acthd);
-
- snprintf(filename, sizeof(filename),
- "%s/i915_blt_ringbuffer_data", path);
- intel_decode_context_set_head_tail(ring_head, ring_tail);
- printf("BLT Ringbuffer: ");
- read_data_file (devid, filename, 0);
- }
-
- snprintf(filename, sizeof(filename),
- "%s/i915_bsd_ringbuffer_info", path);
- if (stat(filename, &st) == 0) {
- parse_ringbuffer_info(filename, &ring_head, &ring_tail, &acthd);
-
- snprintf(filename, sizeof(filename),
- "%s/i915_bsd_ringbuffer_data", path);
- intel_decode_context_set_head_tail(ring_head, ring_tail);
- printf("BSD Ringbuffer: ");
- read_data_file (devid, filename, 0);
- }
- } else {
- read_data_file (devid, path, 1);
- }
-
- return 0;
-}
projects / platform / upstream / intel-gpu-tools.git / commitdiff