1/* $NetBSD: pic_i8259.c,v 1.5 2011/06/20 06:21:45 matt 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 1.5 2011/06/20 06:21:45 matt Exp $"); 34 35#include <sys/param.h> 36#include <sys/kmem.h> 37#include <sys/kernel.h> 38#include <sys/intr.h> 39 40#include <uvm/uvm_extern.h> 41 42#include <machine/pio.h> 43 44#include <powerpc/pic/picvar.h> 45 46#include <dev/isa/isareg.h> 47#include <dev/isa/isavar.h> 48 49void i8259_initialize(void); 50 51struct pic_ops * 52setup_i8259(void) 53{ 54 struct i8259_ops *i8259; 55 struct pic_ops *pic; 56 57 i8259 = kmem_alloc(sizeof(*i8259), KM_SLEEP); 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} 80