sys/arch/powerpc/pic/pic_i8259.c

   1 /* $NetBSD: pic_i8259.c,v 1.2 2007/10/17 19:56:46 garbled 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_i8259.c,v 1.2 2007/10/17 19:56:46 garbled 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
  44 #include <arch/powerpc/pic/picvar.h>
  45
  46 #include <dev/isa/isareg.h>
  47 #include <dev/isa/isavar.h>
  48
  49 void i8259_initialize(void);
  50
  51 struct pic_ops *
  52 setup_i8259(void)
  53 {
  54         struct i8259_ops *i8259;
  55         struct pic_ops *pic;
  56
  57         i8259 = malloc(sizeof(struct i8259_ops), M_DEVBUF, M_NOWAIT);
  58         KASSERT(i8259 != NULL);
  59         pic = &i8259->pic;
  60
  61         pic->pic_numintrs = 16;
  62         pic->pic_cookie = (void *)NULL;
  63         pic->pic_enable_irq = i8259_enable_irq;
  64         pic->pic_reenable_irq = i8259_enable_irq;
  65         pic->pic_disable_irq = i8259_disable_irq;
  66         pic->pic_get_irq = i8259_get_irq;
  67         pic->pic_ack_irq = i8259_ack_irq;
  68         pic->pic_establish_irq = dummy_pic_establish_intr;
  69         pic->pic_finish_setup = NULL;
  70         strcpy(pic->pic_name, "i8259");
  71         pic_add(pic);
  72         i8259->pending_events = 0;
  73         i8259->enable_mask = 0xffffffff;
  74         i8259->irqs = 0;
  75
  76         i8259_initialize();
  77
  78         return pic;
  79 }