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      1 /* $NetBSD: pic_i8259.c,v 1.7 2017/06/01 02:45:07 chs 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 1.7 2017/06/01 02:45:07 chs 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 
     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 = kmem_alloc(sizeof(*i8259), KM_SLEEP);
     58 	pic = &i8259->pic;
     59 
     60 	pic->pic_numintrs = 16;
     61 	pic->pic_cookie = (void *)NULL;
     62 	pic->pic_enable_irq = i8259_enable_irq;
     63 	pic->pic_reenable_irq = i8259_enable_irq;
     64 	pic->pic_disable_irq = i8259_disable_irq;
     65 	pic->pic_get_irq = i8259_get_irq;
     66 	pic->pic_ack_irq = i8259_ack_irq;
     67 	pic->pic_establish_irq = dummy_pic_establish_intr;
     68 	pic->pic_finish_setup = NULL;
     69 	strcpy(pic->pic_name, "i8259");
     70 	pic_add(pic);
     71 	i8259->pending_events = 0;
     72 	i8259->enable_mask = 0xffffffff;
     73 	i8259->irqs = 0;
     74 
     75 	i8259_initialize();
     76 
     77 	return pic;
     78 }
     79