root/kern/dev/lamebus/ltrace.h

INCLUDED FROM

   1 /*
   2  * Copyright (c) 2000, 2001, 2002, 2003, 2004, 2005, 2008, 2009
   3  *      The President and Fellows of Harvard College.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE UNIVERSITY AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE UNIVERSITY OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  30 #ifndef _LAMEBUS_LTRACE_H_
  31 #define _LAMEBUS_LTRACE_H_
  33 struct ltrace_softc {
  34         /* Initialized by lower-level attachment function */
  35         void *lt_busdata;
uint32_t lt_buspos;
  37 };
  39 /*
  40  * Functions provided for debug hacking:
  41  *   ltrace_on:    turns on the trace161 tracing flag CODE.
  42  *   ltrace_off:   turns off the trace161 tracing flag CODE.
  43  *   ltrace_debug: causes sys161/trace161 to print a message with CODE.
  44  *   ltrace_dump:  causes trace161 to do a complete state dump, tagged CODE.
  45  *
  46  * The flags for ltrace_on/off are the characters used to control
  47  * tracing on the trace161 command line. See the System/161 manual for
  48  * more information.
  49  *
  50  * ltrace_debug is for printing simple indications that a certain
  51  * piece of code has been reached, like one might use kprintf, except
  52  * that it is less invasive than kprintf. Think of it as setting the
  53  * value of a readout on the system's front panel. (In real life,
  54  * since computers don't have front panels with blinking lights any
  55  * more, people often use the speaker or the top left corner of the
  56  * screen for this purpose.)
  57  *
  58  * ltrace_dump dumps the entire system state and is primarily intended
  59  * for regression testing of System/161. It might or might not prove
  60  * useful for debugging as well.
  61  */
  62 void ltrace_on(uint32_t code);
  63 void ltrace_off(uint32_t code);
  64 void ltrace_debug(uint32_t code);
  65 void ltrace_dump(uint32_t code);
  67 #endif /* _LAMEBUS_LTRACE_H_ */