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/*-
* Copyright (c) 2004 Pyun YongHyeon
* 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.
*
*/
/* $NetBSD: auxio.c,v 1.11 2003/07/15 03:36:04 lukem Exp $ */
/*-
* Copyright (c) 2000, 2001 Matthew R. Green
* 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.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* 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.
*/
/*
* AUXIO registers support on the SBus & EBus2, used for the floppy driver
* and to control the system LED, for the BLINK option.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/dev/auxio/auxio.c 200874 2009-12-22 21:02:46Z marius $");
#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 <dev/ofw/openfirm.h>
#include <machine/bus.h>
#include <machine/ofw_machdep.h>
#include <machine/resource.h>
#include <sparc64/sbus/sbusvar.h>
#include <dev/auxio/auxioreg.h>
/*
* On sun4u, auxio exists with one register (LED) on the SBus, and 5
* registers on the EBus2 (pci) (LED, PCIMODE, FREQUENCY, SCSI
* OSCILLATOR, and TEMP SENSE.
*/
#define AUXIO_PCIO_LED 0
#define AUXIO_PCIO_PCI 1
#define AUXIO_PCIO_FREQ 2
#define AUXIO_PCIO_OSC 3
#define AUXIO_PCIO_TEMP 4
#define AUXIO_PCIO_NREG 5
struct auxio_softc {
struct device *sc_dev;
int sc_nauxio;
struct resource *sc_res[AUXIO_PCIO_NREG];
int sc_rid[AUXIO_PCIO_NREG];
bus_space_tag_t sc_regt[AUXIO_PCIO_NREG];
bus_space_handle_t sc_regh[AUXIO_PCIO_NREG];
struct cdev *sc_led_dev;
u_int32_t sc_led_stat;
int sc_flags;
#define AUXIO_LEDONLY 0x1
#define AUXIO_EBUS 0x2
#define AUXIO_SBUS 0x4
struct mtx sc_lock;
};
static void auxio_led_func(void *arg, int onoff);
static int auxio_attach_common(struct auxio_softc *);
static int auxio_bus_probe(device_t);
static int auxio_sbus_attach(device_t);
static int auxio_ebus_attach(device_t);
static int auxio_bus_detach(device_t);
static void auxio_free_resource(struct auxio_softc *);
static __inline u_int32_t auxio_led_read(struct auxio_softc *);
static __inline void auxio_led_write(struct auxio_softc *, u_int32_t);
/* SBus */
static device_method_t auxio_sbus_methods[] = {
DEVMETHOD(device_probe, auxio_bus_probe),
DEVMETHOD(device_attach, auxio_sbus_attach),
DEVMETHOD(device_detach, auxio_bus_detach),
{0, 0}
};
static driver_t auxio_sbus_driver = {
"auxio",
auxio_sbus_methods,
sizeof(struct auxio_softc)
};
static devclass_t auxio_devclass;
/* The probe order is handled by sbus(4). */
EARLY_DRIVER_MODULE(auxio, sbus, auxio_sbus_driver, auxio_devclass, 0, 0,
BUS_PASS_DEFAULT);
MODULE_DEPEND(auxio, sbus, 1, 1, 1);
/* EBus */
static device_method_t auxio_ebus_methods[] = {
DEVMETHOD(device_probe, auxio_bus_probe),
DEVMETHOD(device_attach, auxio_ebus_attach),
DEVMETHOD(device_detach, auxio_bus_detach),
{0, 0}
};
static driver_t auxio_ebus_driver = {
"auxio",
auxio_ebus_methods,
sizeof(struct auxio_softc)
};
EARLY_DRIVER_MODULE(auxio, ebus, auxio_ebus_driver, auxio_devclass, 0, 0,
BUS_PASS_DEFAULT);
MODULE_DEPEND(auxio, ebus, 1, 1, 1);
MODULE_VERSION(auxio, 1);
#define AUXIO_LOCK_INIT(sc) \
mtx_init(&sc->sc_lock, "auxio mtx", NULL, MTX_DEF)
#define AUXIO_LOCK(sc) mtx_lock(&sc->sc_lock)
#define AUXIO_UNLOCK(sc) mtx_unlock(&sc->sc_lock)
#define AUXIO_LOCK_DESTROY(sc) mtx_destroy(&sc->sc_lock)
static __inline void
auxio_led_write(struct auxio_softc *sc, u_int32_t v)
{
if (sc->sc_flags & AUXIO_EBUS)
bus_space_write_4(sc->sc_regt[AUXIO_PCIO_LED],
sc->sc_regh[AUXIO_PCIO_LED], 0, v);
else
bus_space_write_1(sc->sc_regt[AUXIO_PCIO_LED],
sc->sc_regh[AUXIO_PCIO_LED], 0, v);
}
static __inline u_int32_t
auxio_led_read(struct auxio_softc *sc)
{
u_int32_t led;
if (sc->sc_flags & AUXIO_EBUS)
led = bus_space_read_4(sc->sc_regt[AUXIO_PCIO_LED],
sc->sc_regh[AUXIO_PCIO_LED], 0);
else
led = bus_space_read_1(sc->sc_regt[AUXIO_PCIO_LED],
sc->sc_regh[AUXIO_PCIO_LED], 0);
return (led);
}
static void
auxio_led_func(void *arg, int onoff)
{
struct auxio_softc *sc;
u_int32_t led;
sc = (struct auxio_softc *)arg;
AUXIO_LOCK(sc);
/*
* NB: We must not touch the other bits of the SBus AUXIO reg.
*/
led = auxio_led_read(sc);
if (onoff)
led |= AUXIO_LED_LED;
else
led &= ~AUXIO_LED_LED;
auxio_led_write(sc, led);
AUXIO_UNLOCK(sc);
}
static int
auxio_bus_probe(device_t dev)
{
const char *name;
name = ofw_bus_get_name(dev);
if (strcmp("auxio", name) == 0) {
device_set_desc(dev, "Sun Auxiliary I/O");
return (0);
}
return (ENXIO);
}
static int
auxio_ebus_attach(device_t dev)
{
struct auxio_softc *sc;
sc = device_get_softc(dev);
sc->sc_dev = dev;
AUXIO_LOCK_INIT(sc);
sc->sc_nauxio = AUXIO_PCIO_NREG;
sc->sc_flags = AUXIO_LEDONLY | AUXIO_EBUS;
return(auxio_attach_common(sc));
}
static int
auxio_attach_common(struct auxio_softc *sc)
{
struct resource *res;
int i;
for (i = 0; i < sc->sc_nauxio; i++) {
sc->sc_rid[i] = i;
res = bus_alloc_resource_any(sc->sc_dev, SYS_RES_MEMORY,
&sc->sc_rid[i], RF_ACTIVE);
if (res == NULL) {
device_printf(sc->sc_dev,
"could not allocate resources\n");
goto attach_fail;
}
sc->sc_res[i] = res;
sc->sc_regt[i] = rman_get_bustag(res);
sc->sc_regh[i] = rman_get_bushandle(res);
}
sc->sc_led_stat = auxio_led_read(sc) & AUXIO_LED_LED;
sc->sc_led_dev = led_create(auxio_led_func, sc, "auxioled");
/* turn on the LED */
auxio_led_func(sc, 1);
return (0);
attach_fail:
auxio_free_resource(sc);
return (ENXIO);
}
static int
auxio_bus_detach(device_t dev)
{
struct auxio_softc *sc;
sc = device_get_softc(dev);
led_destroy(sc->sc_led_dev);
auxio_led_func(sc, sc->sc_led_stat);
auxio_free_resource(sc);
return (0);
}
static void
auxio_free_resource(struct auxio_softc *sc)
{
int i;
for (i = 0; i < sc->sc_nauxio; i++)
if (sc->sc_res[i])
bus_release_resource(sc->sc_dev, SYS_RES_MEMORY,
sc->sc_rid[i], sc->sc_res[i]);
AUXIO_LOCK_DESTROY(sc);
}
static int
auxio_sbus_attach(device_t dev)
{
struct auxio_softc *sc;
sc = device_get_softc(dev);
sc->sc_dev = dev;
AUXIO_LOCK_INIT(sc);
sc->sc_nauxio = 1;
sc->sc_flags = AUXIO_LEDONLY | AUXIO_SBUS;
return (auxio_attach_common(sc));
}