path: root/tools/firewire/nosy-dump.c

/* -*- mode: c; c-basic-offset: 2 -*- */

/*
 * nosy-dump - Interface to snoop mode driver for TI PCILynx 1394 controllers
 * Copyright (C) 2002-2006 Kristian Høgsberg
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/time.h>
#include <endian.h>
#include <popt.h>
#include <poll.h>
#include <byteswap.h>
#include <termios.h>

#include <signal.h>

#include "list.h"
#include "nosy-user.h"
#include "nosy-dump.h"

enum {
  PACKET_FIELD_DETAIL		= 0x01,
  PACKET_FIELD_DATA_LENGTH	= 0x02,
  /* Marks the fields we print in transaction view. */
  PACKET_FIELD_TRANSACTION	= 0x04
};

static void
print_packet(uint32_t *data, size_t length);
static void
decode_link_packet(struct link_packet *packet, size_t length,
		   int include_flags, int exclude_flags);

static int   run = 1;
sig_t sys_sigint_handler;

static char *option_nosy_device = "/dev/nosy";
static char *option_view = "packet";
static char *option_output = NULL;
static char *option_input = NULL;
static int   option_hex;
static int   option_iso;
static int   option_cycle_start;
static int   option_version;
static int   option_verbose;

enum {
  VIEW_TRANSACTION,
  VIEW_PACKET,
  VIEW_STATS
};

static const struct poptOption options[] = {
  {
    longName:	"device",
    shortName:	'd',
    argInfo:	POPT_ARG_STRING,
    arg:	&option_nosy_device,
    descrip:	"Path to nosy device.",
    argDescrip:	"DEVICE"
  },
  {
    longName:	"view",
    argInfo:	POPT_ARG_STRING,
    arg:	&option_view,
    descrip:	"Specify view of bus traffic: packet, transaction or stats.",
    argDescrip:	"VIEW"
  },
  {
    longName:	"hex",
    shortName:	'x',
    argInfo:	POPT_ARG_NONE,
    arg:	&option_hex,
    descrip:	"Print each packet in hex.",
  },
  {
    longName:	"iso",
    argInfo:	POPT_ARG_NONE,
    arg:	&option_iso,
    descrip:	"Print iso packets.",
  },
  {
    longName:	"cycle-start",
    argInfo:	POPT_ARG_NONE,
    arg:	&option_cycle_start,
    descrip:	"Print cycle start packets.",
  },
  {
    longName:	"verbose",
    shortName:	'v',
    argInfo:	POPT_ARG_NONE,
    arg:	&option_verbose,
    descrip:	"Verbose packet view.",
  },
  {
    longName:	"output",
    shortName:	'o',
    argInfo:	POPT_ARG_STRING,
    arg:	&option_output,
    descrip:	"Log to output file.",
    argDescrip:	"FILENAME"
  },
  {
    longName:	"input",
    shortName:	'i',
    argInfo:	POPT_ARG_STRING,
    arg:	&option_input,
    descrip:	"Decode log from file.",
    argDescrip:	"FILENAME"
  },
  {
    longName:	"version",
    argInfo:	POPT_ARG_NONE,
    arg:	&option_version,
    descrip:	"Specify print version info.",
  },
  POPT_AUTOHELP
  POPT_TABLEEND
};

void 
sigint_handler(int signal_num)
{
  if (run == 1) {
    run = 0;
    /* Allow all Ctrl-C's except the first to interrupt the program in
     * the usual way.
     */
    signal(SIGINT, SIG_DFL);
  }
}

struct subaction *
subaction_create(uint32_t *data, size_t length)
{
  struct subaction *sa;

  /* we put the ack in the subaction struct for easy access. */
  sa = malloc(sizeof *sa - sizeof sa->packet + length);
  sa->ack = data[length / 4 - 1];
  sa->length = length;
  memcpy (&sa->packet, data, length);

  return sa;
}

void
subaction_destroy(struct subaction *sa)
{
  free(sa);
}

struct list pending_transaction_list =
  { &pending_transaction_list,