/*- * 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 __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* * 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)); }