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Add epic(4), a driver for the front panel LEDs in Sun Fire V215/V245.

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It's named after the driver doing the same job in OpenSolaris.
This commit is contained in:
Marius Strobl 2010-01-10 15:44:48 +00:00
parent 0e34fcfba8
commit 319570f9c4
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=202006
5 changed files with 228 additions and 0 deletions
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1
sys/conf/files.sparc64
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@ -67,6 +67,7 @@ libkern/flsl.c standard
libkern/memmove.c standard
sparc64/central/central.c optional central
sparc64/ebus/ebus.c optional ebus
sparc64/ebus/epic.c optional epic ebus
sparc64/fhc/clkbrd.c optional fhc
sparc64/fhc/fhc.c optional fhc
sparc64/isa/isa.c optional isa

2
sys/modules/Makefile
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@ -81,6 +81,7 @@ SUBDIR= ${_3dfx} \
${_em} \
en \
${_ep} \
${_epic} \
${_et} \
${_ex} \
${_exca} \
@ -602,6 +603,7 @@ _sound= sound
.if ${MACHINE_ARCH} == "sparc64"
_auxio= auxio
_em= em
_epic= epic
_i2c= i2c
_igb= igb
.if ${MK_CDDL} != "no" || defined(ALL_MODULES)

8
sys/modules/epic/Makefile Normal file
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@ -0,0 +1,8 @@
# $FreeBSD$
.PATH: ${.CURDIR}/../../sparc64/ebus
KMOD= epic
SRCS= device_if.h epic.c bus_if.h ofw_bus_if.h
.include <bsd.kmod.mk>

1
sys/sparc64/conf/GENERIC
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@ -150,6 +150,7 @@ device eeprom # eeprom (really a front-end for the MK48Txx)
device mk48txx # Mostek MK48Txx clocks
device rtc # rtc (really a front-end for the MC146818)
device mc146818 # Motorola MC146818 and compatible clocks
device epic # Sun Fire V215/V245 LEDs
# Serial (COM) ports
device puc # Multi-channel uarts

216
sys/sparc64/ebus/epic.c Normal file
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@ -0,0 +1,216 @@
/*-
* Copyright (c) 2009 Marius Strobl <marius@FreeBSD.org>
* 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 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 AUTHOR 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>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/module.h>
#include <sys/mutex.h>
#include <sys/resource.h>
#include <sys/rman.h>
#include <dev/led/led.h>
#include <dev/ofw/ofw_bus.h>
#include <machine/bus.h>
#include <machine/resource.h>
#define EPIC_DELAY 10000
#define EPIC_NREG 1
#define EPIC_FW_LED 0
#define EPIC_FW_LED_DATA 0x40
#define EPIC_FW_LED_ADDR 0x41
#define EPIC_FW_LED_WRITE_MASK 0x80
#define EPIC_FW_VERSION 0x05
#define EPIC_LED_STATE0 0x06
#define EPIC_LED_ALERT_MASK 0x0c
#define EPIC_LED_ALERT_OFF 0x00
#define EPIC_LED_ALERT_ON 0x04
#define EPIC_LED_POWER_MASK 0x30
#define EPIC_LED_POWER_OFF 0x00
#define EPIC_LED_POWER_ON 0x10
#define EPIC_LED_POWER_SB_BLINK 0x20
#define EPIC_LED_POWER_FAST_BLINK 0x30
static struct resource_spec epic_res_spec[] = {
{ SYS_RES_MEMORY, EPIC_FW_LED, RF_ACTIVE },
{ -1, 0 }
};
struct epic_softc {
struct mtx sc_mtx;
struct resource *sc_res[EPIC_NREG];
struct cdev *sc_led_dev_alert;
struct cdev *sc_led_dev_power;
};
#define EPIC_FW_LED_READ(sc, off) ({ \
uint8_t __val; \
bus_write_1((sc)->sc_res[EPIC_FW_LED], EPIC_FW_LED_ADDR, (off));\
bus_barrier((sc)->sc_res[EPIC_FW_LED], EPIC_FW_LED_ADDR, 1, \
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE); \
DELAY(EPIC_DELAY); \
__val = bus_read_1((sc)->sc_res[EPIC_FW_LED], EPIC_FW_LED_DATA);\
bus_barrier((sc)->sc_res[EPIC_FW_LED], EPIC_FW_LED_DATA, 1, \
BUS_SPACE_BARRIER_READ); \
DELAY(EPIC_DELAY); \
__val; \
})
#define EPIC_FW_LED_WRITE(sc, off, mask, val) do { \
bus_write_1((sc)->sc_res[EPIC_FW_LED], EPIC_FW_LED_ADDR, (off));\
bus_barrier((sc)->sc_res[EPIC_FW_LED], EPIC_FW_LED_ADDR, 1, \
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE); \
DELAY(EPIC_DELAY); \
bus_write_1((sc)->sc_res[EPIC_FW_LED], EPIC_FW_LED_WRITE_MASK, \
(mask)); \
bus_barrier((sc)->sc_res[EPIC_FW_LED], EPIC_FW_LED_WRITE_MASK, \
1, BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE); \
DELAY(EPIC_DELAY); \
bus_write_1((sc)->sc_res[EPIC_FW_LED], EPIC_FW_LED_DATA, (val));\
bus_barrier((sc)->sc_res[EPIC_FW_LED], EPIC_FW_LED_DATA, 1, \
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE); \
DELAY(EPIC_DELAY); \
} while (0)
#define EPIC_LOCK_INIT(sc) \
mtx_init(&(sc)->sc_mtx, "epic mtx", NULL, MTX_DEF)
#define EPIC_LOCK_DESTROY(sc) mtx_destroy(&(sc)->sc_mtx)
#define EPIC_LOCK(sc) mtx_lock(&(sc)->sc_mtx)
#define EPIC_UNLOCK(sc) mtx_unlock(&(sc)->sc_mtx)
static device_probe_t epic_probe;
static device_attach_t epic_attach;
static device_detach_t epic_detach;
static void epic_led_alert(void *arg, int onoff);
static void epic_led_power(void *arg, int onoff);
static device_method_t epic_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, epic_probe),
DEVMETHOD(device_attach, epic_attach),
DEVMETHOD(device_detach, epic_detach),
KOBJMETHOD_END
};
static devclass_t epic_devclass;
DEFINE_CLASS_0(epic, epic_driver, epic_methods,
sizeof(struct epic_softc));
DRIVER_MODULE(epic, ebus, epic_driver, epic_devclass, 0, 0);
static int
epic_probe(device_t dev)
{
const char* compat;
compat = ofw_bus_get_compat(dev);
if (compat != NULL && strcmp(ofw_bus_get_name(dev),
"env-monitor") == 0 && strcmp(compat, "epic") == 0) {
device_set_desc(dev, "Sun Fire V215/V245 LEDs");
return (BUS_PROBE_DEFAULT);
}
return (ENXIO);
}
static int
epic_attach(device_t dev)
{
struct epic_softc *sc;
sc = device_get_softc(dev);
if (bus_alloc_resources(dev, epic_res_spec, sc->sc_res)) {
device_printf(dev, "failed to allocate resources\n");
bus_release_resources(dev, epic_res_spec, sc->sc_res);
return (ENXIO);
}
EPIC_LOCK_INIT(sc);
if (bootverbose)
device_printf(dev, "version 0x%x\n",
EPIC_FW_LED_READ(sc, EPIC_FW_VERSION));
sc->sc_led_dev_alert = led_create(epic_led_alert, sc, "alert");
sc->sc_led_dev_power = led_create(epic_led_power, sc, "power");
return (0);
}
static int
epic_detach(device_t dev)
{
struct epic_softc *sc;
sc = device_get_softc(dev);
led_destroy(sc->sc_led_dev_alert);
led_destroy(sc->sc_led_dev_power);
bus_release_resources(dev, epic_res_spec, sc->sc_res);
EPIC_LOCK_DESTROY(sc);
return (0);
}
static void
epic_led_alert(void *arg, int onoff)
{
struct epic_softc *sc;
sc = (struct epic_softc *)arg;
EPIC_LOCK(sc);
EPIC_FW_LED_WRITE(sc, EPIC_LED_STATE0, EPIC_LED_ALERT_MASK,
onoff ? EPIC_LED_ALERT_ON : EPIC_LED_ALERT_OFF);
EPIC_UNLOCK(sc);
}
static void
epic_led_power(void *arg, int onoff)
{
struct epic_softc *sc;
sc = (struct epic_softc *)arg;
EPIC_LOCK(sc);
EPIC_FW_LED_WRITE(sc, EPIC_LED_STATE0, EPIC_LED_POWER_MASK,
onoff ? EPIC_LED_POWER_ON : EPIC_LED_POWER_OFF);
EPIC_UNLOCK(sc);
}