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pic_cpc700.c revision 1.2.8.2 
      1 /* $NetBSD: pic_cpc700.c,v 1.2.8.2 2007/11/06 23:16:21 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  * 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_cpc700.c,v 1.2.8.2 2007/11/06 23:16:21 matt 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 #include <machine/bus.h>
     51 
     52 #include <arch/powerpc/pic/picvar.h>
     53 
     54 #include <dev/ic/cpc700reg.h>
     55 #include <dev/ic/cpc700uic.h>
     56 
     57 static void cpc700_pic_enable_irq(struct pic_ops *, int, int);
     58 static void cpc700_pic_disable_irq(struct pic_ops *, int);
     59 static int  cpc700_get_irq(struct pic_ops *);
     60 static void cpc700_ack_irq(struct pic_ops *, int);
     61 
     62 struct cpc700_ops {
     63 	struct pic_ops pic;
     64 };
     65 
     66 struct pic_ops *
     67 setup_cpc700(void)
     68 {
     69 	struct cpc700_ops *cpc700;
     70 	struct pic_ops *pic;
     71 
     72 	cpc700 = malloc(sizeof(struct cpc700_ops), M_DEVBUF, M_NOWAIT);
     73 	KASSERT(cpc700 != NULL);
     74 	pic = &cpc700->pic;
     75 
     76 	pic->pic_numintrs = 32;
     77 	pic->pic_cookie = (void *)NULL;
     78 	pic->pic_enable_irq = cpc700_pic_enable_irq;
     79 	pic->pic_reenable_irq = cpc700_pic_enable_irq;
     80 	pic->pic_disable_irq = cpc700_pic_disable_irq;
     81 	pic->pic_get_irq = cpc700_get_irq;
     82 	pic->pic_ack_irq = cpc700_ack_irq;
     83 	pic->pic_establish_irq = dummy_pic_establish_intr;
     84 	strcpy(pic->pic_name, "cpc700");
     85 	pic_add(pic);
     86 
     87 	return pic;
     88 }
     89 
     90 static void
     91 cpc700_pic_enable_irq(struct pic_ops *pic, int irq, int type)
     92 {
     93 	cpc700_enable_irq(irq);
     94 }
     95 
     96 static void
     97 cpc700_pic_disable_irq(struct pic_ops *pic, int irq)
     98 {
     99 	cpc700_disable_irq(irq);
    100 }
    101 
    102 static int
    103 cpc700_get_irq(struct pic_ops *pic)
    104 {
    105 	int irq;
    106 
    107 	irq = cpc700_read_irq();
    108 	if (irq < 0)
    109 		return 255;
    110 	return irq;
    111 }
    112 
    113 static void
    114 cpc700_ack_irq(struct pic_ops *pic, int irq)
    115 {
    116 	cpc700_eoi(irq);
    117 }
    118