NetBSD/sys/arch/sandpoint/isa/isa_machdep.c

393 lines
10 KiB
C

/* $NetBSD: isa_machdep.c,v 1.3 2001/02/08 20:27:25 briggs Exp $ */
/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Charles M. Hannum.
*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation 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 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. 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/param.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/systm.h>
#include <sys/syslog.h>
#include <sys/device.h>
#include <machine/pio.h>
#include <machine/intr.h>
#include <dev/isa/isareg.h>
#include <dev/isa/isavar.h>
#include <sandpoint/isa/icu.h>
#define IRQ_SLAVE 2
static void *isa_irqh;
static int isa_pending;
static int isa_reg_level=0xffff;
static struct intrhand *isa_intrhand[16];
static int isa_intrtype[16];
static int isa_intrmask[16];
static void isa_intr_mask __P((int));
static void isa_intr_clear __P((int));
static int do_isa_intr __P((void *));
static int isa_intr __P((void));
const struct evcnt *
isa_intr_evcnt(isa_chipset_tag_t ic, int irq)
{
/* XXX for now, no evcnt parent reported */
return NULL;
}
static int
do_isa_intr(void *iarg)
{
int irq, intbit;
struct intrhand *ih;
extern int sandpoint_icpl;
irq = isa_intr();
if (irq == -1)
goto out;
do {
if (isa_intrmask[irq] & sandpoint_icpl) {
intbit = 1 << irq;
isa_pending |= intbit;
isa_intr_clear(irq);
isa_intr_mask(isa_pending);
setsoftisa();
} else {
isa_intr_clear(irq);
ih = isa_intrhand[irq];
while (ih) {
(*ih->ih_fun)(ih->ih_arg);
ih = ih->ih_next;
}
}
irq = isa_intr();
} while (irq != -1);
out:
return 0;
}
/*
* Set up an interrupt handler to start being called.
*/
void *
isa_intr_establish(ic, irq, type, level, ih_fun, ih_arg)
isa_chipset_tag_t ic;
int irq;
int type;
int level;
int (*ih_fun) __P((void *));
void *ih_arg;
{
extern int fakeintr(void *arg);
extern char *intr_typename(int);
struct intrhand **p, *q, *ih;
static struct intrhand fakehand = {fakeintr};
if (irq < 0 || irq > 15)
panic("isa_intr_establish: bogus irq or type");
ih = malloc(sizeof *ih, M_DEVBUF, cold ? M_NOWAIT : M_WAITOK);
if (ih == NULL)
panic("isa_intr_establish: can't malloc handler info");
switch (isa_intrtype[irq]) {
case IST_NONE:
isa_intrtype[irq] = type;
break;
case IST_EDGE:
case IST_LEVEL:
if (type == isa_intrtype[irq])
break;
case IST_PULSE:
if (type != IST_NONE) {
panic("isa_intr_establish: can't share %s with %s",
intr_typename(isa_intrtype[irq]),
intr_typename(type));
}
}
for (p = &isa_intrhand[irq]; (q = *p) != NULL; p = &q->ih_next)
;
fakehand.ih_level = level;
*p = &fakehand;
isa_intr_calculate_masks(0);
ih->ih_fun = ih_fun;
ih->ih_arg = ih_arg;
ih->ih_count = 0;
ih->ih_next = NULL;
ih->ih_level = level;
ih->ih_irq = irq;
*p = ih;
if (level < isa_reg_level) {
if (isa_irqh) {
intr_disestablish(isa_irqh);
}
isa_irqh = intr_establish(SANDPOINT_INTR_ISA, IST_LEVEL, level,
do_isa_intr, NULL);
isa_reg_level = level;
}
return ih;
}
void
isa_do_pending_int(int pcpl)
{
struct intrhand *ih;
int irq;
/* Interrupts disabled & reentrancy prevented by caller */
for (irq=0 ; irq<16 ; irq++) {
if ( (isa_pending & (1 << irq))
&& ((isa_intrmask[irq] & pcpl) == 0)) {
isa_pending &= ~(1 << irq);
ih = isa_intrhand[irq];
while (ih) {
(*ih->ih_fun)(ih->ih_arg);
ih = ih->ih_next;
}
}
}
isa_intr_mask(isa_pending);
}
void
isa_intr_calculate_masks(int reset_level)
{
int irq, minlevel, irqs;
struct intrhand **p, *q;
/*
* calculate isa_intrmasks so that bits are set according to
* spl levels so that the mask in do_isa_intr is valid.
*/
/* First, clear masks */
for (irq=0 ; irq<16 ; irq++) {
isa_intrmask[irq] = 0;
}
irqs = 0;
minlevel = 0xffff;
for (irq=0 ; irq<16 ; irq++) {
if (isa_intrhand[irq]) {
irqs |= 1 << irq;
}
for (p = &isa_intrhand[irq]; (q = *p) != NULL;
p = &q->ih_next) {
isa_intrmask[irq] |= (1 << q->ih_level);
if (q->ih_level < minlevel) {
minlevel = q->ih_level;
}
}
}
isa_intr_mask(~irqs);
if (reset_level && minlevel != 0xffff) {
if (minlevel != isa_reg_level) {
if (isa_irqh) {
intr_disestablish(isa_irqh);
}
isa_irqh = intr_establish(SANDPOINT_INTR_ISA,
IST_LEVEL, minlevel, do_isa_intr, NULL);
isa_reg_level = minlevel;
}
}
}
/*
* Deregister an interrupt handler.
*/
void
isa_intr_disestablish(ic, arg)
isa_chipset_tag_t ic;
void *arg;
{
struct intrhand *ih = arg;
int irq = ih->ih_irq, cpl;
struct intrhand **p, *q;
if (irq < 0 || irq > 15)
panic("intr_disestablish: bogus irq");
cpl = splhigh();
for (p = &isa_intrhand[irq]; (q = *p) != NULL && q != ih;
p = &q->ih_next)
;
if (q)
*p = q->ih_next;
else
panic("isa_intr_disestablish: handler not registered");
free((void *)ih, M_DEVBUF);
isa_intr_calculate_masks(1);
if (isa_intrhand[irq] == NULL) {
isa_intrtype[irq] = IST_NONE;
}
splx(cpl);
}
#define SUPERIO_CONF_IDX 0x15C
#define SUPERIO_CONF_DATA 0x15D
#define SUPERIO_CONF_LDN 0x07
#define SUPERIO_CONF_ACTIVATE 0x30
#define SUPERIO_CONF_CFG1_ATDRIVE 0x04
void
isa_attach_hook(parent, self, iba)
struct device *parent, *self;
struct isabus_attach_args *iba;
{
u_int8_t cfg;
int ldn;
/* Set PS/2 drive mode */
isa_outb(SUPERIO_CONF_IDX, 0x21);
cfg = isa_inb(SUPERIO_CONF_DATA);
cfg &= ~SUPERIO_CONF_CFG1_ATDRIVE;
isa_outb(SUPERIO_CONF_DATA, cfg);
/* Enable the 9 Super I/O devices. */
for (ldn=0; ldn <= 8; ldn++) {
isa_outb(SUPERIO_CONF_IDX, SUPERIO_CONF_LDN);
isa_outb(SUPERIO_CONF_DATA, ldn);
isa_outb(SUPERIO_CONF_IDX, SUPERIO_CONF_ACTIVATE);
isa_outb(SUPERIO_CONF_DATA, 0x01);
}
}
static int
isa_intr(void)
{
int irq;
isa_outb(IO_ICU1, 0x0c);
irq = isa_inb(IO_ICU1);
if (!(irq & 0x80)) {
return -1;
}
irq &= 0x07;
if (irq == IRQ_SLAVE) {
isa_outb(IO_ICU2, 0x0c);
irq = (isa_inb(IO_ICU2+1) & 0x07) + 8;
}
return (irq);
}
void
isa_intr_mask(int mask)
{
isa_outb(IO_ICU1 + 1, mask);
isa_outb(IO_ICU2 + 1, mask >> 8);
}
static void
isa_intr_clear(irq)
int irq;
{
if (irq < 8) {
isa_outb(IO_ICU1, 0x60 | irq);
} else {
isa_outb(IO_ICU2, 0x60 | (irq%8));
isa_outb(IO_ICU1, 0x60 | IRQ_SLAVE);
}
}
void
isa_intr_init(void)
{
isa_outb(IO_ICU1, 0x19);
isa_outb(IO_ICU1+1, 0);
isa_outb(IO_ICU1+1, 1 << IRQ_SLAVE);
isa_outb(IO_ICU1+1, 3);
isa_outb(IO_ICU1+1, 0xff);
isa_outb(IO_ICU1, 0x68);
isa_outb(IO_ICU1, 0x0a);
isa_outb(IO_ICU2, 0x19);
isa_outb(IO_ICU2+1, 8);
isa_outb(IO_ICU2+1, IRQ_SLAVE);
isa_outb(IO_ICU2+1, 3);
isa_outb(IO_ICU2+1, 0xff);
isa_outb(IO_ICU2, 0x68);
isa_outb(IO_ICU2, 0x0a);
}