sys/arch/powerpc/pic/openpic_common.c

   1 /*      $NetBSD: openpic_common.c,v 1.2 2008/04/08 02:33:03 garbled Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2007 Michael Lorenz
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  26  * POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #include <sys/cdefs.h>
  30 __KERNEL_RCSID(0, "$NetBSD: openpic_common.c,v 1.2 2008/04/08 02:33:03 garbled Exp $");
  31
  32 #include <sys/param.h>
  33 #include <sys/malloc.h>
  34 #include <sys/kernel.h>
  35
  36 #include <uvm/uvm_extern.h>
  37
  38 #include <machine/pio.h>
  39 #include <powerpc/openpic.h>
  40
  41 #include <arch/powerpc/pic/picvar.h>
  42
  43 #include "opt_interrupt.h"
  44
  45 volatile unsigned char *openpic_base;
  46
  47 void
  48 opic_finish_setup(struct pic_ops *pic)
  49 {
  50         uint32_t cpumask = 0;
  51         int i;
  52
  53 #ifdef OPENPIC_DISTRIBUTE
  54         for (i = 0; i < ncpu; i++)
  55                 cpumask |= (1 << cpu_info[i].ci_cpuid);
  56 #else
  57         cpumask = 1;
  58 #endif
  59         for (i = 0; i < pic->pic_numintrs; i++) {
  60                 /* send all interrupts to all active CPUs */
  61                 openpic_write(OPENPIC_IDEST(i), cpumask);
  62         }
  63 }
  64
  65 void
  66 openpic_set_priority(int cpu, int pri)
  67 {
  68         u_int x;
  69
  70         x = openpic_read(OPENPIC_CPU_PRIORITY(cpu));
  71         x &= ~OPENPIC_CPU_PRIORITY_MASK;
  72         x |= pri;
  73         openpic_write(OPENPIC_CPU_PRIORITY(cpu), x);
  74 }
  75
  76 int
  77 opic_get_irq(struct pic_ops *pic, int mode)
  78 {
  79
  80         return openpic_read_irq(curcpu()->ci_index);
  81 }
  82
  83 void
  84 opic_ack_irq(struct pic_ops *pic, int irq)
  85 {
  86
  87         openpic_eoi(curcpu()->ci_index);
  88 }