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pic_i8259.c revision 1.2 
      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  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 #include <sys/cdefs.h>
     40 __KERNEL_RCSID(0, "$NetBSD: pic_i8259.c,v 1.2 2007/10/17 19:56:46 garbled Exp $");
     41 
     42 #include <sys/param.h>
     43 #include <sys/malloc.h>
     44 #include <sys/kernel.h>
     45 
     46 #include <uvm/uvm_extern.h>
     47 
     48 #include <machine/pio.h>
     49 #include <machine/intr.h>
     50 
     51 #include <arch/powerpc/pic/picvar.h>
     52 
     53 #include <dev/isa/isareg.h>
     54 #include <dev/isa/isavar.h>
     55 
     56 void i8259_initialize(void);
     57 
     58 struct pic_ops *
     59 setup_i8259(void)
     60 {
     61 	struct i8259_ops *i8259;
     62 	struct pic_ops *pic;
     63 
     64 	i8259 = malloc(sizeof(struct i8259_ops), M_DEVBUF, M_NOWAIT);
     65 	KASSERT(i8259 != NULL);
     66 	pic = &i8259->pic;
     67 
     68 	pic->pic_numintrs = 16;
     69 	pic->pic_cookie = (void *)NULL;
     70 	pic->pic_enable_irq = i8259_enable_irq;
     71 	pic->pic_reenable_irq = i8259_enable_irq;
     72 	pic->pic_disable_irq = i8259_disable_irq;
     73 	pic->pic_get_irq = i8259_get_irq;
     74 	pic->pic_ack_irq = i8259_ack_irq;
     75 	pic->pic_establish_irq = dummy_pic_establish_intr;
     76 	pic->pic_finish_setup = NULL;
     77 	strcpy(pic->pic_name, "i8259");
     78 	pic_add(pic);
     79 	i8259->pending_events = 0;
     80 	i8259->enable_mask = 0xffffffff;
     81 	i8259->irqs = 0;
     82 
     83 	i8259_initialize();
     84 
     85 	return pic;
     86 }
     87