/* $OpenBSD: auxreg.c,v 1.14 2007/07/01 19:07:46 miod Exp $ */
/* $NetBSD: auxreg.c,v 1.21 1997/05/24 20:15:59 pk Exp $ */
/*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* 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, Lawrence Berkeley Laboratory.
*
* 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.
*
* @(#)auxreg.c 8.1 (Berkeley) 6/11/93
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/kernel.h>
#include <sys/timeout.h>
#include <uvm/uvm_param.h>
#include <machine/autoconf.h>
#include <sparc/sparc/vaddrs.h>
#include <sparc/sparc/auxioreg.h>
static int auxregmatch(struct device *, void *, void *);
static void auxregattach(struct device *, struct device *, void *);
struct cfattach auxreg_ca = {
sizeof(struct device), auxregmatch, auxregattach
};
struct cfdriver auxreg_cd = {
0, "auxreg", DV_DULL
};
volatile u_char *auxio_reg; /* Copy of AUXIO_REG */
u_char auxio_regval;
#ifdef SUN4M /* Tadpole SPARCbook */
volatile u_char *sb_auxio_reg;
volatile u_char *sb_auxio2_reg;
#endif
extern int sparc_led_blink; /* from machdep */
struct timeout sparc_led_to;
void
led_blink(zero)
void *zero;
{
int s;
/* Don't do anything if there's no auxreg, ok? */
if (auxio_reg == NULL)
return;
if (!sparc_led_blink) {
/* If blink has been disabled, make sure it goes back on... */
s = splhigh();
LED_ON;
splx(s);
return;
}
s = splhigh();
LED_FLIP;
splx(s);
/*
* Blink rate is:
* full cycle every second if completely idle (loadav = 0)
* full cycle every 2 seconds if loadav = 1
* full cycle every 3 seconds if loadav = 2
* etc.
*/
s = (((averunnable.ldavg[0] + FSCALE) * hz) >> (FSHIFT + 1));
timeout_add(&sparc_led_to, s);
}
/*
* The OPENPROM calls this "auxiliary-io".
* We also need to match the "auxio2" register on Tadpole SPARCbooks.
*/
static int
auxregmatch(struct device *parent, void *cf, void *aux)
{
struct confargs *ca = aux;
switch (cputyp) {
case CPU_SUN4:
default:
return (0);
case CPU_SUN4C:
return (strcmp("auxiliary-io", ca->ca_ra.ra_name) == 0);
case CPU_SUN4M:
return (strcmp("auxio", ca->ca_ra.ra_name) == 0 ||
strcmp("auxio2", ca->ca_ra.ra_name) == 0);
}
}
/* ARGSUSED */
static void
auxregattach(struct device *parent, struct device *self, void *aux)
{
struct confargs *ca = aux;
struct romaux *ra = &ca->ca_ra;
#ifdef SUN4M
volatile u_char **regp;
if (CPU_ISSUN4M && strncmp("Tadpole", mainbus_model, 7) == 0) {
if (strcmp("auxio", ra->ra_name) == 0)
regp = &sb_auxio_reg;
else
regp = &sb_auxio2_reg;
if (*regp == NULL)
*regp = mapiodev(ra->ra_reg, 0, sizeof(char));
} else
#endif
if (auxio_reg == NULL) {
(void)mapdev(ra->ra_reg, AUXREG_VA, 0, sizeof(long));
if (CPU_ISSUN4M) {
auxio_reg = AUXIO4M_REG;
auxio_regval = *AUXIO4M_REG | AUXIO4M_MB1;
} else {
auxio_reg = AUXIO4C_REG;
auxio_regval = *AUXIO4C_REG | AUXIO4C_FEJ | AUXIO4C_MB1;
}
timeout_set(&sparc_led_to, led_blink, NULL);
/* In case it's initialized to true... */
if (sparc_led_blink)
led_blink((caddr_t)0);
}
printf("\n");
}
unsigned int
auxregbisc(int bis, int bic)
{
int s;
#ifdef DIAGNOSTIC
if (auxio_reg == NULL)
/*
* Not all machines have an `aux' register; devices that
* depend on it should not get configured if it's absent.
*/
panic("no aux register");
#endif
s = splhigh();
auxio_regval = (auxio_regval | bis) & ~bic;
*auxio_reg = auxio_regval;
splx(s);
return (auxio_regval);
}
#ifdef SUN4M
unsigned int
sb_auxregbisc(int isreg2, int bis, int bic)
{
int s;
volatile u_char *auxreg;
u_char aux;
auxreg = isreg2 ? sb_auxio2_reg : sb_auxio_reg;
if (auxreg == NULL)
return (0);
s = splhigh();
aux = (*auxreg | bis) & ~bic;
*auxreg = aux;
splx(s);
return (aux);
}
#endif