/* $NetBSD: isa_machdep.c,v 1.14 2023/12/20 13:55:18 thorpej Exp $ */
/*-
* Copyright (c) 1996-1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jesse Off
*
* This code is derived from software contributed to The NetBSD Foundation
* by Mark Brinicombe, Charles M. Hannum and by Jason R. Thorpe of the
* Numerical Aerospace Simulation Facility, NASA Ames Research Center.
*
* 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.
*/
/*-
* Copyright (c) 1991 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* William Jolitz.
*
* 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.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
*
* @(#)isa.c 7.2 (Berkeley) 5/13/91
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: isa_machdep.c,v 1.14 2023/12/20 13:55:18 thorpej Exp $");
#include "opt_irqstats.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/syslog.h>
#include <sys/device.h>
#include <sys/proc.h>
#include <sys/bus.h>
#include <machine/intr.h>
#include <machine/pio.h>
#include <machine/bootconfig.h>
#include <machine/isa_machdep.h>
#include <dev/isa/isareg.h>
#include <dev/isa/isavar.h>
#include <arm/ep93xx/ep93xxvar.h>
#include <uvm/uvm_extern.h>
/* prototypes */
void isa_tsarm_init(u_int, u_int);
struct arm32_isa_chipset isa_chipset_tag;
static unsigned int ep93xxirq[3] = { 20, 33, 40 };
/* only have 3 irqs connected to real lines on TS-7xxx */
static unsigned int isairq[3] = { 5, 6, 7 };
static unsigned int isairq_nhandlers[3] = { 0, 0, 0 };
int
isa_intr_alloc(isa_chipset_tag_t ic, int mask, int type, int *irq)
{
int i, bestirq, count;
if (type == IST_NONE)
panic("intr_alloc: bogus type");
bestirq = -1;
count = -1;
/* some interrupts should never be dynamically allocated */
mask &= 0x00e0;
for (i = 0; i < __arraycount(isairq); i++) {
if ((mask & (1<<isairq[i])) == 0)
continue;
if (isairq_nhandlers[i] < count || count == -1) {
bestirq = isairq[i];
count = isairq_nhandlers[i];
}
}
if (bestirq == -1)
return (1);
*irq = bestirq;
return (0);
}
const struct evcnt *
isa_intr_evcnt(isa_chipset_tag_t ic, int irq)
{
return NULL;
}
/*
* Set up an interrupt handler to start being called.
*/
void *
isa_intr_establish(isa_chipset_tag_t ic, int irq, int type, int level, int (*ih_fun)(void *), void *ih_arg)
{
int epirq = -1, i;
/* Find real EP93XX irq number */
for(i = 0; i < __arraycount(isairq); i++) {
if (irq == isairq[i]) epirq = ep93xxirq[i];
}
if (epirq == -1)
return NULL;
else
return (ep93xx_intr_establish(epirq, level, ih_fun, ih_arg));
}
/*
* Deregister an interrupt handler.
*/
void
isa_intr_disestablish(isa_chipset_tag_t ic, void *arg)
{
ep93xx_intr_disestablish(arg);
}
void
isa_tsarm_init(u_int iobase16, u_int membase16)
{
isa_io_init(iobase16, membase16);
}
/*
* isa_intr_init()
*
* TODO: Set up ISA IRQ 5 on GPIO pin
*/
void
isa_intr_init(void)
{
}
void
isa_attach_hook(device_t parent, device_t self, struct isabus_attach_args *iba)
{
/*
* Since we can only have one ISA bus, we just use a single
* statically allocated ISA chipset structure. Pass it up
* now.
*/
iba->iba_ic = &isa_chipset_tag;
printf(": PC/104 expansion bus");
}
void
isa_detach_hook(isa_chipset_tag_t ic, device_t self)
{
}
