324 lines
8.6 KiB
C
324 lines
8.6 KiB
C
/*-
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* Copyright (c) 2004 Pyun YongHyeon
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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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*/
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/* $NetBSD: auxio.c,v 1.11 2003/07/15 03:36:04 lukem Exp $ */
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/*-
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* Copyright (c) 2000, 2001 Matthew R. Green
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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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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* 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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/*
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* AUXIO registers support on the SBus & EBus2, used for the floppy driver
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* and to control the system LED, for the BLINK option.
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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 <dev/ofw/openfirm.h>
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#include <machine/bus.h>
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#include <machine/ofw_machdep.h>
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#include <machine/resource.h>
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#include <sparc64/sbus/sbusvar.h>
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#include <dev/auxio/auxioreg.h>
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/*
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* On sun4u, auxio exists with one register (LED) on the SBus, and 5
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* registers on the EBus2 (pci) (LED, PCIMODE, FREQUENCY, SCSI
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* OSCILLATOR, and TEMP SENSE.
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*/
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#define AUXIO_PCIO_LED 0
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#define AUXIO_PCIO_PCI 1
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#define AUXIO_PCIO_FREQ 2
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#define AUXIO_PCIO_OSC 3
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#define AUXIO_PCIO_TEMP 4
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#define AUXIO_PCIO_NREG 5
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struct auxio_softc {
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struct device *sc_dev;
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int sc_nauxio;
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struct resource *sc_res[AUXIO_PCIO_NREG];
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int sc_rid[AUXIO_PCIO_NREG];
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bus_space_tag_t sc_regt[AUXIO_PCIO_NREG];
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bus_space_handle_t sc_regh[AUXIO_PCIO_NREG];
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struct cdev *sc_led_dev;
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u_int32_t sc_led_stat;
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int sc_flags;
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#define AUXIO_LEDONLY 0x1
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#define AUXIO_EBUS 0x2
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#define AUXIO_SBUS 0x4
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struct mtx sc_lock;
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};
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static void auxio_led_func(void *arg, int onoff);
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static int auxio_attach_common(struct auxio_softc *);
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static int auxio_bus_probe(device_t);
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static int auxio_sbus_attach(device_t);
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static int auxio_ebus_attach(device_t);
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static int auxio_bus_detach(device_t);
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static void auxio_free_resource(struct auxio_softc *);
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static __inline u_int32_t auxio_led_read(struct auxio_softc *);
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static __inline void auxio_led_write(struct auxio_softc *, u_int32_t);
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/* SBus */
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static device_method_t auxio_sbus_methods[] = {
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DEVMETHOD(device_probe, auxio_bus_probe),
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DEVMETHOD(device_attach, auxio_sbus_attach),
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DEVMETHOD(device_detach, auxio_bus_detach),
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DEVMETHOD_END
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};
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static driver_t auxio_sbus_driver = {
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"auxio",
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auxio_sbus_methods,
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sizeof(struct auxio_softc)
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};
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static devclass_t auxio_devclass;
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/* The probe order is handled by sbus(4). */
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EARLY_DRIVER_MODULE(auxio, sbus, auxio_sbus_driver, auxio_devclass, 0, 0,
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BUS_PASS_DEFAULT);
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MODULE_DEPEND(auxio, sbus, 1, 1, 1);
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/* EBus */
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static device_method_t auxio_ebus_methods[] = {
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DEVMETHOD(device_probe, auxio_bus_probe),
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DEVMETHOD(device_attach, auxio_ebus_attach),
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DEVMETHOD(device_detach, auxio_bus_detach),
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DEVMETHOD_END
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};
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static driver_t auxio_ebus_driver = {
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"auxio",
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auxio_ebus_methods,
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sizeof(struct auxio_softc)
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};
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EARLY_DRIVER_MODULE(auxio, ebus, auxio_ebus_driver, auxio_devclass, 0, 0,
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BUS_PASS_DEFAULT);
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MODULE_DEPEND(auxio, ebus, 1, 1, 1);
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MODULE_VERSION(auxio, 1);
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#define AUXIO_LOCK_INIT(sc) \
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mtx_init(&sc->sc_lock, "auxio mtx", NULL, MTX_DEF)
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#define AUXIO_LOCK(sc) mtx_lock(&sc->sc_lock)
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#define AUXIO_UNLOCK(sc) mtx_unlock(&sc->sc_lock)
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#define AUXIO_LOCK_DESTROY(sc) mtx_destroy(&sc->sc_lock)
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static __inline void
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auxio_led_write(struct auxio_softc *sc, u_int32_t v)
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{
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if (sc->sc_flags & AUXIO_EBUS)
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bus_space_write_4(sc->sc_regt[AUXIO_PCIO_LED],
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sc->sc_regh[AUXIO_PCIO_LED], 0, v);
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else
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bus_space_write_1(sc->sc_regt[AUXIO_PCIO_LED],
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sc->sc_regh[AUXIO_PCIO_LED], 0, v);
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}
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static __inline u_int32_t
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auxio_led_read(struct auxio_softc *sc)
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{
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u_int32_t led;
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if (sc->sc_flags & AUXIO_EBUS)
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led = bus_space_read_4(sc->sc_regt[AUXIO_PCIO_LED],
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sc->sc_regh[AUXIO_PCIO_LED], 0);
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else
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led = bus_space_read_1(sc->sc_regt[AUXIO_PCIO_LED],
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sc->sc_regh[AUXIO_PCIO_LED], 0);
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return (led);
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}
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static void
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auxio_led_func(void *arg, int onoff)
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{
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struct auxio_softc *sc;
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u_int32_t led;
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sc = (struct auxio_softc *)arg;
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AUXIO_LOCK(sc);
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/*
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* NB: We must not touch the other bits of the SBus AUXIO reg.
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*/
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led = auxio_led_read(sc);
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if (onoff)
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led |= AUXIO_LED_LED;
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else
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led &= ~AUXIO_LED_LED;
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auxio_led_write(sc, led);
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AUXIO_UNLOCK(sc);
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}
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static int
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auxio_bus_probe(device_t dev)
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{
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const char *name;
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name = ofw_bus_get_name(dev);
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if (strcmp("auxio", name) == 0) {
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device_set_desc(dev, "Sun Auxiliary I/O");
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return (0);
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}
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return (ENXIO);
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}
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static int
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auxio_ebus_attach(device_t dev)
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{
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struct auxio_softc *sc;
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sc = device_get_softc(dev);
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sc->sc_dev = dev;
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AUXIO_LOCK_INIT(sc);
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sc->sc_nauxio = AUXIO_PCIO_NREG;
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sc->sc_flags = AUXIO_LEDONLY | AUXIO_EBUS;
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return(auxio_attach_common(sc));
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}
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static int
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auxio_attach_common(struct auxio_softc *sc)
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{
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struct resource *res;
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int i;
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for (i = 0; i < sc->sc_nauxio; i++) {
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sc->sc_rid[i] = i;
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res = bus_alloc_resource_any(sc->sc_dev, SYS_RES_MEMORY,
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&sc->sc_rid[i], RF_ACTIVE);
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if (res == NULL) {
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device_printf(sc->sc_dev,
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"could not allocate resources\n");
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goto attach_fail;
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}
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sc->sc_res[i] = res;
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sc->sc_regt[i] = rman_get_bustag(res);
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sc->sc_regh[i] = rman_get_bushandle(res);
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}
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sc->sc_led_stat = auxio_led_read(sc) & AUXIO_LED_LED;
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sc->sc_led_dev = led_create(auxio_led_func, sc, "auxioled");
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/* turn on the LED */
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auxio_led_func(sc, 1);
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return (0);
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attach_fail:
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auxio_free_resource(sc);
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return (ENXIO);
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}
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static int
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auxio_bus_detach(device_t dev)
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{
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struct auxio_softc *sc;
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sc = device_get_softc(dev);
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led_destroy(sc->sc_led_dev);
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auxio_led_func(sc, sc->sc_led_stat);
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auxio_free_resource(sc);
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return (0);
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}
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static void
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auxio_free_resource(struct auxio_softc *sc)
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{
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int i;
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for (i = 0; i < sc->sc_nauxio; i++)
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if (sc->sc_res[i])
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bus_release_resource(sc->sc_dev, SYS_RES_MEMORY,
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sc->sc_rid[i], sc->sc_res[i]);
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AUXIO_LOCK_DESTROY(sc);
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}
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static int
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auxio_sbus_attach(device_t dev)
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{
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struct auxio_softc *sc;
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sc = device_get_softc(dev);
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sc->sc_dev = dev;
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AUXIO_LOCK_INIT(sc);
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sc->sc_nauxio = 1;
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sc->sc_flags = AUXIO_LEDONLY | AUXIO_SBUS;
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return (auxio_attach_common(sc));
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}
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