FreeBSD/Linux Kernel Cross Reference
sys/powerpc/booke/interrupt.c

     /*-
      * Copyright (C) 2006 Semihalf, Rafal Jaworowski <raj@semihalf.com>
      * Copyright 2002 by Peter Grehan.
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
      * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. The name of the author may not be used to endorse or promote products
     *    derived from this software without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     */
    
    /*
     * Interrupts are dispatched to here from locore asm
     */
    
    #include <sys/cdefs.h>                  /* RCS ID & Copyright macro defns */
    __FBSDID("$FreeBSD: releng/10.1/sys/powerpc/booke/interrupt.c 223485 2011-06-23 22:21:28Z nwhitehorn $");
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/bus.h>
    #include <sys/interrupt.h>
    #include <sys/kernel.h>
    #include <sys/kthread.h>
    #include <sys/ktr.h>
    #include <sys/lock.h>
    #include <sys/malloc.h>
    #include <sys/mutex.h>
    #include <sys/proc.h>
    #include <sys/smp.h>
    #include <sys/unistd.h>
    #include <sys/vmmeter.h>
    
    #include <machine/cpu.h>
    #include <machine/db_machdep.h>
    #include <machine/frame.h>
    #include <machine/intr_machdep.h>
    #include <machine/md_var.h>
    #include <machine/pcb.h>
    #include <machine/psl.h>
    #include <machine/trap.h>
    
    #include "pic_if.h"
    
    extern void decr_intr(struct trapframe *);
    
    void powerpc_decr_interrupt(struct trapframe *);
    void powerpc_extr_interrupt(struct trapframe *);
    void powerpc_crit_interrupt(struct trapframe *);
    void powerpc_mchk_interrupt(struct trapframe *);
    
    static void dump_frame(struct trapframe *framep);
    
    static void
    dump_frame(struct trapframe *frame)
    {
            int i;
    
            printf("\n*** *** STACK FRAME DUMP *** ***\n");
            printf("  exc  = 0x%x\n", frame->exc);
            printf("  srr0 = 0x%08x\n", frame->srr0);
            printf("  srr1 = 0x%08x\n", frame->srr1);
            printf("  dear = 0x%08x\n", frame->cpu.booke.dear);
            printf("  esr  = 0x%08x\n", frame->cpu.booke.esr);
            printf("  lr   = 0x%08x\n", frame->lr);
            printf("  cr   = 0x%08x\n", frame->cr);
            printf("  sp   = 0x%08x\n", frame->fixreg[1]);
    
            for (i = 0; i < 32; i++) {
                    printf("  R%02d = 0x%08x", i, frame->fixreg[i]);
                    if ((i & 0x3) == 3)
                            printf("\n");
            }
            printf("\n");
    }
    
    void powerpc_crit_interrupt(struct trapframe *framep)
    {
    
            printf("powerpc_crit_interrupt: critical interrupt!\n");
           dump_frame(framep);
           trap(framep);
   }
   
   void powerpc_mchk_interrupt(struct trapframe *framep)
   {
   
           printf("powerpc_mchk_interrupt: machine check interrupt!\n");
           dump_frame(framep);
           trap(framep);
   }
   
   /*
    * Decrementer interrupt routine
    */
   void
   powerpc_decr_interrupt(struct trapframe *framep)
   {
           struct thread *td;
           struct trapframe *oldframe;
   
           td = curthread;
           critical_enter();
           atomic_add_int(&td->td_intr_nesting_level, 1);
           oldframe = td->td_intr_frame;
           td->td_intr_frame = framep;
           decr_intr(framep);
           td->td_intr_frame = oldframe;
           atomic_subtract_int(&td->td_intr_nesting_level, 1);
           critical_exit();
           framep->srr1 &= ~PSL_WE;
   }
   
   /*
    * External input interrupt routine
    */
   void
   powerpc_extr_interrupt(struct trapframe *framep)
   {
   
           critical_enter();
           PIC_DISPATCH(root_pic, framep);
           critical_exit();
           framep->srr1 &= ~PSL_WE;
   }

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