/*- * Copyright (c) 2004 Joerg Wunsch * * derived from sys/i386/isa/pcf.c which is: * * Copyright (c) 1998 Nicolas Souchu, Marc Bouget * 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("$FreeBSD$"); /* * Device specific driver for the SUNW,envctrl device found on some * UltraSPARC Sun systems. This device is a Philips PCF8584 sitting * on the Ebus2. */ #include <sys/param.h> #include <sys/bus.h> #include <sys/conf.h> #include <sys/kernel.h> #include <sys/lock.h> #include <sys/malloc.h> #include <sys/module.h> #include <sys/mutex.h> #include <sys/resource.h> #include <sys/systm.h> #include <sys/uio.h> #include <dev/ofw/ofw_bus.h> #include <machine/bus.h> #include <machine/resource.h> #include <sys/rman.h> #include <dev/iicbus/iicbus.h> #include <dev/iicbus/iiconf.h> #include <dev/pcf/pcfvar.h> #include "iicbus_if.h" #undef PCF_DEFAULT_ADDR #define PCF_DEFAULT_ADDR 0x55 /* SUNW,pcf default */ static int envctrl_probe(device_t); static int envctrl_attach(device_t); static int envctrl_detach(device_t); static device_method_t envctrl_methods[] = { /* device interface */ DEVMETHOD(device_probe, envctrl_probe), DEVMETHOD(device_attach, envctrl_attach), DEVMETHOD(device_detach, envctrl_detach), /* iicbus interface */ DEVMETHOD(iicbus_callback, iicbus_null_callback), DEVMETHOD(iicbus_repeated_start, pcf_repeated_start), DEVMETHOD(iicbus_start, pcf_start), DEVMETHOD(iicbus_stop, pcf_stop), DEVMETHOD(iicbus_write, pcf_write), DEVMETHOD(iicbus_read, pcf_read), DEVMETHOD(iicbus_reset, pcf_rst_card), { 0, 0 } }; static devclass_t envctrl_devclass; static driver_t envctrl_driver = { "envctrl", envctrl_methods, sizeof(struct pcf_softc), }; static int envctrl_probe(device_t dev) { if (strcmp("SUNW,envctrl", ofw_bus_get_name(dev)) == 0) { device_set_desc(dev, "EBus SUNW,envctrl"); return (0); } return (ENXIO); } static int envctrl_attach(device_t dev) { struct pcf_softc *sc; int rv = ENXIO; sc = DEVTOSOFTC(dev); mtx_init(&sc->pcf_lock, device_get_nameunit(dev), "pcf", MTX_DEF); /* IO port is mandatory */ sc->res_ioport = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->rid_ioport, RF_ACTIVE); if (sc->res_ioport == 0) { device_printf(dev, "cannot reserve I/O port range\n"); goto error; } sc->pcf_flags = device_get_flags(dev); if (!(sc->pcf_flags & IIC_POLLED)) { sc->res_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->rid_irq, RF_ACTIVE); if (sc->res_irq == 0) { device_printf(dev, "can't reserve irq, polled mode.\n"); sc->pcf_flags |= IIC_POLLED; } } /* reset the chip */ pcf_rst_card(dev, IIC_FASTEST, PCF_DEFAULT_ADDR, NULL); rv = bus_setup_intr(dev, sc->res_irq, INTR_TYPE_NET | INTR_MPSAFE /* | INTR_ENTROPY */, NULL, pcf_intr, sc, &sc->intr_cookie); if (rv) { device_printf(dev, "could not setup IRQ\n"); goto error; } if ((sc->iicbus = device_add_child(dev, "iicbus", -1)) == NULL) device_printf(dev, "could not allocate iicbus instance\n"); /* probe and attach the iicbus */ bus_generic_attach(dev); return (0); error: if (sc->res_irq != 0) { bus_release_resource(dev, SYS_RES_IRQ, sc->rid_irq, sc->res_irq); } if (sc->res_ioport != 0) { bus_release_resource(dev, SYS_RES_MEMORY, sc->rid_ioport, sc->res_ioport); } mtx_destroy(&sc->pcf_lock); return (rv); } static int envctrl_detach(device_t dev) { struct pcf_softc *sc; int rv; sc = DEVTOSOFTC(dev); if ((rv = bus_generic_detach(dev)) != 0) return (rv); if ((rv = device_delete_child(dev, sc->iicbus)) != 0) return (rv); if (sc->res_irq != 0) { bus_teardown_intr(dev, sc->res_irq, sc->intr_cookie); bus_release_resource(dev, SYS_RES_IRQ, sc->rid_irq, sc->res_irq); } bus_release_resource(dev, SYS_RES_MEMORY, sc->rid_ioport, sc->res_ioport); mtx_destroy(&sc->pcf_lock); return (0); } DRIVER_MODULE(envctrl, ebus, envctrl_driver, envctrl_devclass, 0, 0); DRIVER_MODULE(iicbus, envctrl, iicbus_driver, iicbus_devclass, 0, 0);