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/* $OpenBSD: clkbrd.c,v 1.6 2008/01/20 16:41:17 kettenis Exp $ */
/*
* Copyright (c) 2004 Jason L. Wright (jason@thought.net)
* All rights reserved.
*
* 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 AUTHOR ``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 AUTHOR 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/param.h>
#include <sys/conf.h>
#include <sys/device.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/sensors.h>
#include <sys/systm.h>
#include <sys/timeout.h>
#include <machine/bus.h>
#include <machine/autoconf.h>
#include <machine/openfirm.h>
#include <sparc64/dev/fhcvar.h>
#include <sparc64/dev/clkbrdreg.h>
#include <sparc64/dev/clkbrdvar.h>
int clkbrd_match(struct device *, void *, void *);
void clkbrd_attach(struct device *, struct device *, void *);
void clkbrd_led_blink(void *, int);
void clkbrd_refresh(void *);
struct cfattach clkbrd_ca = {
sizeof(struct clkbrd_softc), clkbrd_match, clkbrd_attach
};
struct cfdriver clkbrd_cd = {
NULL, "clkbrd", DV_DULL
};
int
clkbrd_match(struct device *parent, void *match, void *aux)
{
struct fhc_attach_args *fa = aux;
if (strcmp(fa->fa_name, "clock-board") == 0)
return (1);
return (0);
}
void
clkbrd_attach(struct device *parent, struct device *self, void *aux)
{
struct clkbrd_softc *sc = (struct clkbrd_softc *)self;
struct fhc_attach_args *fa = aux;
int slots;
u_int8_t r;
sc->sc_bt = fa->fa_bustag;
if (fa->fa_nreg < 2) {
printf(": no registers\n");
return;
}
if (fhc_bus_map(sc->sc_bt, fa->fa_reg[1].fbr_slot,
fa->fa_reg[1].fbr_offset, fa->fa_reg[1].fbr_size, 0,
&sc->sc_creg)) {
printf(": can't map ctrl regs\n");
return;
}
if (fa->fa_nreg > 2) {
if (fhc_bus_map(sc->sc_bt, fa->fa_reg[2].fbr_slot,
fa->fa_reg[2].fbr_offset, fa->fa_reg[2].fbr_size, 0,
&sc->sc_vreg)) {
printf(": can't map vreg\n");
return;
}
sc->sc_has_vreg = 1;
}
slots = 4;
r = bus_space_read_1(sc->sc_bt, sc->sc_creg, CLK_STS1);
switch (r & 0xc0) {
case 0x40:
slots = 16;
break;
case 0xc0:
slots = 8;
break;
case 0x80:
if (sc->sc_has_vreg) {
r = bus_space_read_1(sc->sc_bt, sc->sc_vreg, 0);
if (r != 0 && (r & 0x80) == 0)
slots = 5;
}
}
sc->sc_blink.bl_func = clkbrd_led_blink;
sc->sc_blink.bl_arg = sc;
blink_led_register(&sc->sc_blink);
/* Initialize sensor data. */
strlcpy(sc->sc_sensordev.xname, sc->sc_dv.dv_xname,
sizeof(sc->sc_sensordev.xname));
sc->sc_sensor.type = SENSOR_TEMP;
sensor_attach(&sc->sc_sensordev, &sc->sc_sensor);
if (sensor_task_register(sc, clkbrd_refresh, 5) == NULL) {
printf(": unable to register update task\n");
return;
}
sensordev_install(&sc->sc_sensordev);
printf(": %d slots\n", slots);
}
void
clkbrd_led_blink(void *vsc, int on)
{
struct clkbrd_softc *sc = vsc;
int s;
u_int8_t r;
s = splhigh();
r = bus_space_read_1(sc->sc_bt, sc->sc_creg, CLK_CTRL);
if (on)
r |= CLK_CTRL_RLED;
else
r &= ~CLK_CTRL_RLED;
bus_space_write_1(sc->sc_bt, sc->sc_creg, CLK_CTRL, r);
bus_space_read_1(sc->sc_bt, sc->sc_creg, CLK_CTRL);
splx(s);
}
/*
* Calibration table for temperature sensor.
*/
int8_t clkbrd_temp[] = {
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 1, 2, 4, 5,
7, 8, 10, 11, 12, 13, 14, 15,
17, 18, 19, 20, 21, 22, 23, 24,
24, 25, 26, 27, 28, 29, 29, 30,
31, 32, 32, 33, 34, 35, 35, 36,
37, 38, 38, 39, 40, 40, 41, 42,
42, 43, 44, 44, 45, 46, 46, 47,
48, 48, 49, 50, 50, 51, 52, 52,
53, 54, 54, 55, 56, 57, 57, 58,
59, 59, 60, 60, 61, 62, 63, 63,
64, 65, 65, 66, 67, 68, 68, 69,
70, 70, 71, 72, 73, 74, 74, 75,
76, 77, 78, 78, 79, 80, 81, 82
};
const int8_t clkbrd_temp_warn = 60;
const int8_t clkbrd_temp_crit = 68;
void
clkbrd_refresh(void *arg)
{
struct clkbrd_softc *sc = arg;
u_int8_t val;
int8_t temp;
val = bus_space_read_1(sc->sc_bt, sc->sc_creg, CLK_TEMP);
if (val == 0xff) {
sc->sc_sensor.flags |= SENSOR_FINVALID;
return;
}
if (val < sizeof(clkbrd_temp))
temp = clkbrd_temp[val];
else
temp = clkbrd_temp[sizeof(clkbrd_temp) - 1];
sc->sc_sensor.value = val * 1000000 + 273150000;
sc->sc_sensor.flags &= ~SENSOR_FINVALID;
sc->sc_sensor.status = SENSOR_S_OK;
if (temp >= clkbrd_temp_warn)
sc->sc_sensor.status = SENSOR_S_WARN;
if (temp >= clkbrd_temp_crit)
sc->sc_sensor.status = SENSOR_S_CRIT;
}
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