Current Path : /sys/powerpc/aim/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
Current File : //sys/powerpc/aim/interrupt.c |
/*- * 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. * * $FreeBSD: release/9.1.0/sys/powerpc/aim/interrupt.c 222614 2011-06-02 14:15:44Z nwhitehorn $ */ /* * Interrupts are dispatched to here from locore asm */ #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ #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/clock.h> #include <machine/db_machdep.h> #include <machine/fpu.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 <machine/spr.h> #include <machine/sr.h> #include "pic_if.h" /* * A very short dispatch, to try and maximise assembler code use * between all exception types. Maybe 'true' interrupts should go * here, and the trap code can come in separately */ void powerpc_interrupt(struct trapframe *framep) { struct thread *td; struct trapframe *oldframe; register_t ee; td = curthread; CTR2(KTR_INTR, "%s: EXC=%x", __func__, framep->exc); switch (framep->exc) { case EXC_EXI: critical_enter(); PIC_DISPATCH(root_pic, framep); critical_exit(); break; case EXC_DECR: 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(); break; default: /* Re-enable interrupts if applicable. */ ee = framep->srr1 & PSL_EE; if (ee != 0) mtmsr(mfmsr() | ee); trap(framep); } }