1220297Sadrian/*- 2220297Sadrian * Copyright (c) 2010 Aleksandr Rybalko. 3220297Sadrian * All rights reserved. 4220297Sadrian * 5220297Sadrian * Redistribution and use in source and binary forms, with or without 6220297Sadrian * modification, are permitted provided that the following conditions 7220297Sadrian * are met: 8220297Sadrian * 1. Redistributions of source code must retain the above copyright 9220297Sadrian * notice, this list of conditions and the following disclaimer. 10220297Sadrian * 2. Redistributions in binary form must reproduce the above copyright 11220297Sadrian * notice, this list of conditions and the following disclaimer in the 12220297Sadrian * documentation and/or other materials provided with the distribution. 13220297Sadrian * 14220297Sadrian * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15220297Sadrian * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16220297Sadrian * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17220297Sadrian * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18220297Sadrian * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19220297Sadrian * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20220297Sadrian * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21220297Sadrian * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22220297Sadrian * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23220297Sadrian * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24220297Sadrian * SUCH DAMAGE. 25220297Sadrian */ 26220297Sadrian 27220297Sadrian#include <sys/cdefs.h> 28220297Sadrian__FBSDID("$FreeBSD: releng/11.0/sys/mips/rt305x/rt305x_ic.c 220297 2011-04-03 14:39:55Z adrian $"); 29220297Sadrian 30220297Sadrian#include <sys/param.h> 31220297Sadrian#include <sys/systm.h> 32220297Sadrian#include <sys/bus.h> 33220297Sadrian#include <sys/interrupt.h> 34220297Sadrian#include <sys/kernel.h> 35220297Sadrian#include <sys/module.h> 36220297Sadrian#include <sys/rman.h> 37220297Sadrian#include <sys/malloc.h> 38220297Sadrian 39220297Sadrian#include <machine/bus.h> 40220297Sadrian 41220297Sadrian#include <mips/rt305x/rt305xreg.h> 42220297Sadrian#include <mips/rt305x/rt305x_icvar.h> 43220297Sadrian 44220297Sadrian 45220297Sadrianstatic int rt305x_ic_probe(device_t); 46220297Sadrianstatic int rt305x_ic_attach(device_t); 47220297Sadrianstatic int rt305x_ic_detach(device_t); 48220297Sadrian 49220297Sadrian 50220297Sadrianstatic struct rt305x_ic_softc *rt305x_ic_softc = NULL; 51220297Sadrian 52220297Sadrianstatic int 53220297Sadrianrt305x_ic_probe(device_t dev) 54220297Sadrian{ 55220297Sadrian device_set_desc(dev, "RT305X Interrupt Controller driver"); 56220297Sadrian return (0); 57220297Sadrian} 58220297Sadrian 59220297Sadrianstatic int 60220297Sadrianrt305x_ic_attach(device_t dev) 61220297Sadrian{ 62220297Sadrian struct rt305x_ic_softc *sc = device_get_softc(dev); 63220297Sadrian int error = 0; 64220297Sadrian 65220297Sadrian KASSERT((device_get_unit(dev) == 0), 66220297Sadrian ("rt305x_ic: Only one Interrupt Controller module supported")); 67220297Sadrian 68220297Sadrian if (rt305x_ic_softc != NULL) 69220297Sadrian return (ENXIO); 70220297Sadrian rt305x_ic_softc = sc; 71220297Sadrian 72220297Sadrian 73220297Sadrian /* Map control/status registers. */ 74220297Sadrian sc->mem_rid = 0; 75220297Sadrian sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 76220297Sadrian &sc->mem_rid, RF_ACTIVE); 77220297Sadrian 78220297Sadrian if (sc->mem_res == NULL) { 79220297Sadrian device_printf(dev, "couldn't map memory\n"); 80220297Sadrian error = ENXIO; 81220297Sadrian rt305x_ic_detach(dev); 82220297Sadrian return(error); 83220297Sadrian } 84220297Sadrian return (bus_generic_attach(dev)); 85220297Sadrian} 86220297Sadrian 87220297Sadrianstatic int 88220297Sadrianrt305x_ic_detach(device_t dev) 89220297Sadrian{ 90220297Sadrian struct rt305x_ic_softc *sc = device_get_softc(dev); 91220297Sadrian 92220297Sadrian bus_generic_detach(dev); 93220297Sadrian 94220297Sadrian if (sc->mem_res) 95220297Sadrian bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, 96220297Sadrian sc->mem_res); 97220297Sadrian return(0); 98220297Sadrian} 99220297Sadrian 100220297Sadrian 101220297Sadrianuint32_t 102220297Sadrianrt305x_ic_get(uint32_t reg) 103220297Sadrian{ 104220297Sadrian struct rt305x_ic_softc *sc = rt305x_ic_softc; 105220297Sadrian 106220297Sadrian if (!sc) 107220297Sadrian return (0); 108220297Sadrian 109220297Sadrian return (bus_read_4(sc->mem_res, reg)); 110220297Sadrian} 111220297Sadrian 112220297Sadrianvoid 113220297Sadrianrt305x_ic_set(uint32_t reg, uint32_t val) 114220297Sadrian{ 115220297Sadrian struct rt305x_ic_softc *sc = rt305x_ic_softc; 116220297Sadrian 117220297Sadrian if (!sc) 118220297Sadrian return; 119220297Sadrian 120220297Sadrian bus_write_4(sc->mem_res, reg, val); 121220297Sadrian 122220297Sadrian return; 123220297Sadrian} 124220297Sadrian 125220297Sadrian 126220297Sadrianstatic device_method_t rt305x_ic_methods[] = { 127220297Sadrian DEVMETHOD(device_probe, rt305x_ic_probe), 128220297Sadrian DEVMETHOD(device_attach, rt305x_ic_attach), 129220297Sadrian DEVMETHOD(device_detach, rt305x_ic_detach), 130220297Sadrian 131220297Sadrian {0, 0}, 132220297Sadrian}; 133220297Sadrian 134220297Sadrianstatic driver_t rt305x_ic_driver = { 135220297Sadrian "rt305x_ic", 136220297Sadrian rt305x_ic_methods, 137220297Sadrian sizeof(struct rt305x_ic_softc), 138220297Sadrian}; 139220297Sadrianstatic devclass_t rt305x_ic_devclass; 140220297Sadrian 141220297SadrianDRIVER_MODULE(rt305x_ic, obio, rt305x_ic_driver, rt305x_ic_devclass, 0, 0); 142