217 lines
6.1 KiB
C
217 lines
6.1 KiB
C
/*-
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* Copyright (c) 2009 Marius Strobl <marius@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/kernel.h>
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#include <sys/lock.h>
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#include <sys/module.h>
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#include <sys/mutex.h>
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#include <sys/resource.h>
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#include <sys/rman.h>
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#include <dev/led/led.h>
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#include <dev/ofw/ofw_bus.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#define EPIC_DELAY 10000
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#define EPIC_NREG 1
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#define EPIC_FW_LED 0
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#define EPIC_FW_LED_DATA 0x40
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#define EPIC_FW_LED_ADDR 0x41
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#define EPIC_FW_LED_WRITE_MASK 0x80
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#define EPIC_FW_VERSION 0x05
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#define EPIC_LED_STATE0 0x06
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#define EPIC_LED_ALERT_MASK 0x0c
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#define EPIC_LED_ALERT_OFF 0x00
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#define EPIC_LED_ALERT_ON 0x04
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#define EPIC_LED_POWER_MASK 0x30
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#define EPIC_LED_POWER_OFF 0x00
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#define EPIC_LED_POWER_ON 0x10
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#define EPIC_LED_POWER_SB_BLINK 0x20
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#define EPIC_LED_POWER_FAST_BLINK 0x30
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static struct resource_spec epic_res_spec[] = {
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{ SYS_RES_MEMORY, EPIC_FW_LED, RF_ACTIVE },
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{ -1, 0 }
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};
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struct epic_softc {
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struct mtx sc_mtx;
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struct resource *sc_res[EPIC_NREG];
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struct cdev *sc_led_dev_alert;
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struct cdev *sc_led_dev_power;
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};
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#define EPIC_FW_LED_READ(sc, off) ({ \
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uint8_t __val; \
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bus_write_1((sc)->sc_res[EPIC_FW_LED], EPIC_FW_LED_ADDR, (off));\
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bus_barrier((sc)->sc_res[EPIC_FW_LED], EPIC_FW_LED_ADDR, 1, \
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BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE); \
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DELAY(EPIC_DELAY); \
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__val = bus_read_1((sc)->sc_res[EPIC_FW_LED], EPIC_FW_LED_DATA);\
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bus_barrier((sc)->sc_res[EPIC_FW_LED], EPIC_FW_LED_DATA, 1, \
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BUS_SPACE_BARRIER_READ); \
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DELAY(EPIC_DELAY); \
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__val; \
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})
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#define EPIC_FW_LED_WRITE(sc, off, mask, val) do { \
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bus_write_1((sc)->sc_res[EPIC_FW_LED], EPIC_FW_LED_ADDR, (off));\
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bus_barrier((sc)->sc_res[EPIC_FW_LED], EPIC_FW_LED_ADDR, 1, \
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BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE); \
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DELAY(EPIC_DELAY); \
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bus_write_1((sc)->sc_res[EPIC_FW_LED], EPIC_FW_LED_WRITE_MASK, \
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(mask)); \
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bus_barrier((sc)->sc_res[EPIC_FW_LED], EPIC_FW_LED_WRITE_MASK, \
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1, BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE); \
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DELAY(EPIC_DELAY); \
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bus_write_1((sc)->sc_res[EPIC_FW_LED], EPIC_FW_LED_DATA, (val));\
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bus_barrier((sc)->sc_res[EPIC_FW_LED], EPIC_FW_LED_DATA, 1, \
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BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE); \
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DELAY(EPIC_DELAY); \
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} while (0)
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#define EPIC_LOCK_INIT(sc) \
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mtx_init(&(sc)->sc_mtx, "epic mtx", NULL, MTX_DEF)
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#define EPIC_LOCK_DESTROY(sc) mtx_destroy(&(sc)->sc_mtx)
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#define EPIC_LOCK(sc) mtx_lock(&(sc)->sc_mtx)
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#define EPIC_UNLOCK(sc) mtx_unlock(&(sc)->sc_mtx)
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static device_probe_t epic_probe;
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static device_attach_t epic_attach;
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static device_detach_t epic_detach;
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static void epic_led_alert(void *arg, int onoff);
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static void epic_led_power(void *arg, int onoff);
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static device_method_t epic_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, epic_probe),
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DEVMETHOD(device_attach, epic_attach),
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DEVMETHOD(device_detach, epic_detach),
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KOBJMETHOD_END
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};
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static devclass_t epic_devclass;
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DEFINE_CLASS_0(epic, epic_driver, epic_methods,
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sizeof(struct epic_softc));
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DRIVER_MODULE(epic, ebus, epic_driver, epic_devclass, 0, 0);
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static int
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epic_probe(device_t dev)
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{
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const char* compat;
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compat = ofw_bus_get_compat(dev);
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if (compat != NULL && strcmp(ofw_bus_get_name(dev),
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"env-monitor") == 0 && strcmp(compat, "epic") == 0) {
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device_set_desc(dev, "Sun Fire V215/V245 LEDs");
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return (BUS_PROBE_DEFAULT);
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}
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return (ENXIO);
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}
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static int
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epic_attach(device_t dev)
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{
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struct epic_softc *sc;
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sc = device_get_softc(dev);
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if (bus_alloc_resources(dev, epic_res_spec, sc->sc_res)) {
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device_printf(dev, "failed to allocate resources\n");
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bus_release_resources(dev, epic_res_spec, sc->sc_res);
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return (ENXIO);
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}
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EPIC_LOCK_INIT(sc);
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if (bootverbose)
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device_printf(dev, "version 0x%x\n",
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EPIC_FW_LED_READ(sc, EPIC_FW_VERSION));
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sc->sc_led_dev_alert = led_create(epic_led_alert, sc, "alert");
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sc->sc_led_dev_power = led_create(epic_led_power, sc, "power");
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return (0);
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}
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static int
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epic_detach(device_t dev)
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{
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struct epic_softc *sc;
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sc = device_get_softc(dev);
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led_destroy(sc->sc_led_dev_alert);
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led_destroy(sc->sc_led_dev_power);
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bus_release_resources(dev, epic_res_spec, sc->sc_res);
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EPIC_LOCK_DESTROY(sc);
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return (0);
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}
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static void
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epic_led_alert(void *arg, int onoff)
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{
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struct epic_softc *sc;
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sc = (struct epic_softc *)arg;
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EPIC_LOCK(sc);
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EPIC_FW_LED_WRITE(sc, EPIC_LED_STATE0, EPIC_LED_ALERT_MASK,
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onoff ? EPIC_LED_ALERT_ON : EPIC_LED_ALERT_OFF);
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EPIC_UNLOCK(sc);
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}
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static void
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epic_led_power(void *arg, int onoff)
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{
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struct epic_softc *sc;
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sc = (struct epic_softc *)arg;
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EPIC_LOCK(sc);
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EPIC_FW_LED_WRITE(sc, EPIC_LED_STATE0, EPIC_LED_POWER_MASK,
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onoff ? EPIC_LED_POWER_ON : EPIC_LED_POWER_OFF);
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EPIC_UNLOCK(sc);
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}
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