root/kern/include/mainbus.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 _MAINBUS_H_
  31 #define _MAINBUS_H_
  33 /*
  34  * Abstract system bus interface.
  35  */
  38 struct cpu;       /* from <cpu.h> */
  39 struct trapframe; /* from <machine/trapframe.h> */
  42 /* Initialize the system bus and probe and attach hardware devices. */
  43 void mainbus_bootstrap(void);
  45 /* Start up secondary CPUs, once their cpu structures are set up */
  46 void mainbus_start_cpus(void);
  48 /* Bus-level interrupt handler, called from cpu-level trap/interrupt code */
  49 void mainbus_interrupt(struct trapframe *);
  51 /* Find the size of main memory. */
  52 /* XXX this interface is not adequately MI */
size_t mainbus_ramsize(void);
  55 /* Switch on an inter-processor interrupt. (Low-level.) */
  56 void mainbus_send_ipi(struct cpu *target);
  58 /*
  59  * The various ways to shut down the system. (These are very low-level
  60  * and should generally not be called directly - md_poweroff, for
  61  * instance, unceremoniously turns the power off without doing
  62  * anything else.)
  63  */
  64 void mainbus_halt(void);
  65 void mainbus_poweroff(void);
  66 void mainbus_reboot(void);
  67 void mainbus_panic(void);
  70 #endif /* _MAINBUS_H_ */