sys/arch/evbppc/pmppc/pic_cpc700.c

   1 /* $NetBSD: pic_cpc700.c,v 1.3 2008/04/24 23:22:24 alc Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2007 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Tim Rightnour
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #include <sys/cdefs.h>
  33 __KERNEL_RCSID(0, "$NetBSD: pic_cpc700.c,v 1.3 2008/04/24 23:22:24 alc Exp $");
  34
  35 #include <sys/param.h>
  36 #include <sys/malloc.h>
  37 #include <sys/kernel.h>
  38
  39 #include <uvm/uvm_extern.h>
  40
  41 #include <machine/pio.h>
  42 #include <machine/intr.h>
  43 #include <machine/bus.h>
  44
  45 #include <arch/powerpc/pic/picvar.h>
  46
  47 #include <dev/ic/cpc700reg.h>
  48 #include <dev/ic/cpc700uic.h>
  49
  50 static void cpc700_pic_enable_irq(struct pic_ops *, int, int);
  51 static void cpc700_pic_disable_irq(struct pic_ops *, int);
  52 static int  cpc700_get_irq(struct pic_ops *, int);
  53 static void cpc700_ack_irq(struct pic_ops *, int);
  54
  55 struct cpc700_ops {
  56         struct pic_ops pic;
  57 };
  58
  59 struct pic_ops *
  60 setup_cpc700(void)
  61 {
  62         struct cpc700_ops *cpc700;
  63         struct pic_ops *pic;
  64
  65         cpc700 = malloc(sizeof(struct cpc700_ops), M_DEVBUF, M_NOWAIT);
  66         KASSERT(cpc700 != NULL);
  67         pic = &cpc700->pic;
  68
  69         pic->pic_numintrs = 32;
  70         pic->pic_cookie = (void *)NULL;
  71         pic->pic_enable_irq = cpc700_pic_enable_irq;
  72         pic->pic_reenable_irq = cpc700_pic_enable_irq;
  73         pic->pic_disable_irq = cpc700_pic_disable_irq;
  74         pic->pic_get_irq = cpc700_get_irq;
  75         pic->pic_ack_irq = cpc700_ack_irq;
  76         pic->pic_establish_irq = dummy_pic_establish_intr;
  77         strcpy(pic->pic_name, "cpc700");
  78         pic_add(pic);
  79
  80         return pic;
  81 }
  82
  83 static void
  84 cpc700_pic_enable_irq(struct pic_ops *pic, int irq, int type)
  85 {
  86         cpc700_enable_irq(irq);
  87 }
  88
  89 static void
  90 cpc700_pic_disable_irq(struct pic_ops *pic, int irq)
  91 {
  92         cpc700_disable_irq(irq);
  93 }
  94
  95 static int
  96 cpc700_get_irq(struct pic_ops *pic, int dummy)
  97 {
  98         int irq;
  99
 100         irq = cpc700_read_irq();
 101         if (irq < 0)
 102                 return 255;
 103         return irq;
 104 }
 105
 106 static void
 107 cpc700_ack_irq(struct pic_ops *pic, int irq)
 108 {
 109         cpc700_eoi(irq);
 110 }