/* $NetBSD: pic_cpc700.c,v 1.8 2020/11/21 15:42:20 thorpej Exp $ */

/*-
* Copyright (c) 2007 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Tim Rightnour
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: pic_cpc700.c,v 1.8 2020/11/21 15:42:20 thorpej Exp $");

#include <sys/param.h>
#include <sys/kmem.h>
#include <sys/kernel.h>

#include <machine/pio.h>
#include <machine/intr.h>
#include <sys/bus.h>

#include <arch/powerpc/pic/picvar.h>

#include <dev/ic/cpc700reg.h>
#include <dev/ic/cpc700uic.h>

static void cpc700_pic_enable_irq(struct pic_ops *, int, int);
static void cpc700_pic_disable_irq(struct pic_ops *, int);
static int  cpc700_get_irq(struct pic_ops *, int);
static void cpc700_ack_irq(struct pic_ops *, int);

struct cpc700_ops {
       struct pic_ops pic;
};

struct pic_ops *
setup_cpc700(void)
{
       struct cpc700_ops *cpc700;
       struct pic_ops *pic;

       cpc700 = kmem_alloc(sizeof(struct cpc700_ops), KM_SLEEP);
       pic = &cpc700->pic;

       pic->pic_numintrs = 32;
       pic->pic_cookie = (void *)NULL;
       pic->pic_enable_irq = cpc700_pic_enable_irq;
       pic->pic_reenable_irq = cpc700_pic_enable_irq;
       pic->pic_disable_irq = cpc700_pic_disable_irq;
       pic->pic_get_irq = cpc700_get_irq;
       pic->pic_ack_irq = cpc700_ack_irq;
       pic->pic_establish_irq = dummy_pic_establish_intr;
       strcpy(pic->pic_name, "cpc700");
       pic_add(pic);

       return pic;
}

static void
cpc700_pic_enable_irq(struct pic_ops *pic, int irq, int type)
{
       cpc700_enable_irq(irq);
}

static void
cpc700_pic_disable_irq(struct pic_ops *pic, int irq)
{
       cpc700_disable_irq(irq);
}

static int
cpc700_get_irq(struct pic_ops *pic, int dummy)
{
       int irq;

       irq = cpc700_read_irq();
       if (irq < 0)
               return 255;
       return irq;
}

static void
cpc700_ack_irq(struct pic_ops *pic, int irq)
{
       cpc700_eoi(irq);
}