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pic_cpc700.c revision 1.4.22.1 
      1 /* $NetBSD: pic_cpc700.c,v 1.4.22.1 2011/03/05 20:50:17 rmind 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 1.4.22.1 2011/03/05 20:50:17 rmind Exp $");
     34 
     35 #include <sys/param.h>
     36 #include <sys/malloc.h>
     37 #include <sys/kernel.h>
     38 
     39 #include <machine/pio.h>
     40 #include <machine/intr.h>
     41 #include <machine/bus.h>
     42 
     43 #include <arch/powerpc/pic/picvar.h>
     44 
     45 #include <dev/ic/cpc700reg.h>
     46 #include <dev/ic/cpc700uic.h>
     47 
     48 static void cpc700_pic_enable_irq(struct pic_ops *, int, int);
     49 static void cpc700_pic_disable_irq(struct pic_ops *, int);
     50 static int  cpc700_get_irq(struct pic_ops *, int);
     51 static void cpc700_ack_irq(struct pic_ops *, int);
     52 
     53 struct cpc700_ops {
     54 	struct pic_ops pic;
     55 };
     56 
     57 struct pic_ops *
     58 setup_cpc700(void)
     59 {
     60 	struct cpc700_ops *cpc700;
     61 	struct pic_ops *pic;
     62 
     63 	cpc700 = malloc(sizeof(struct cpc700_ops), M_DEVBUF, M_NOWAIT);
     64 	KASSERT(cpc700 != NULL);
     65 	pic = &cpc700->pic;
     66 
     67 	pic->pic_numintrs = 32;
     68 	pic->pic_cookie = (void *)NULL;
     69 	pic->pic_enable_irq = cpc700_pic_enable_irq;
     70 	pic->pic_reenable_irq = cpc700_pic_enable_irq;
     71 	pic->pic_disable_irq = cpc700_pic_disable_irq;
     72 	pic->pic_get_irq = cpc700_get_irq;
     73 	pic->pic_ack_irq = cpc700_ack_irq;
     74 	pic->pic_establish_irq = dummy_pic_establish_intr;
     75 	strcpy(pic->pic_name, "cpc700");
     76 	pic_add(pic);
     77 
     78 	return pic;
     79 }
     80 
     81 static void
     82 cpc700_pic_enable_irq(struct pic_ops *pic, int irq, int type)
     83 {
     84 	cpc700_enable_irq(irq);
     85 }
     86 
     87 static void
     88 cpc700_pic_disable_irq(struct pic_ops *pic, int irq)
     89 {
     90 	cpc700_disable_irq(irq);
     91 }
     92 
     93 static int
     94 cpc700_get_irq(struct pic_ops *pic, int dummy)
     95 {
     96 	int irq;
     97 
     98 	irq = cpc700_read_irq();
     99 	if (irq < 0)
    100 		return 255;
    101 	return irq;
    102 }
    103 
    104 static void
    105 cpc700_ack_irq(struct pic_ops *pic, int irq)
    106 {
    107 	cpc700_eoi(irq);
    108 }
    109