openpic_ofw.c revision 133521
186231Stmm/* 286231Stmm * Copyright 2003 by Peter Grehan. All rights reserved. 386231Stmm * 486231Stmm * Redistribution and use in source and binary forms, with or without 586231Stmm * modification, are permitted provided that the following conditions 686231Stmm * are met: 786231Stmm * 1. Redistributions of source code must retain the above copyright 886231Stmm * notice, this list of conditions and the following disclaimer. 986231Stmm * 2. Redistributions in binary form must reproduce the above copyright 1086231Stmm * notice, this list of conditions and the following disclaimer in the 1186231Stmm * documentation and/or other materials provided with the distribution. 1286231Stmm * 3. The name of the author may not be used to endorse or promote products 1386231Stmm * derived from this software without specific prior written permission. 1486231Stmm * 1586231Stmm * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 1686231Stmm * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 1786231Stmm * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 1886231Stmm * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 1986231Stmm * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 2086231Stmm * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 2186231Stmm * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 2286231Stmm * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 2386231Stmm * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2486231Stmm * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2586231Stmm * SUCH DAMAGE. 2686231Stmm * 2786231Stmm */ 2886231Stmm 2986231Stmm/* 3086231Stmm * The macio attachment for the OpenPIC interrupt controller. 3186231Stmm * A nexus driver is defined so the number of interrupts can be 3286231Stmm * determined early in the boot sequence before the hardware 3386231Stmm * is accessed - the interrupt i/f is installed at this time, 3486231Stmm * and when h/w is finally accessed, interrupt sources allocated 3586231Stmm * prior to this are activated 3686231Stmm */ 3786231Stmm 3886231Stmm#include <sys/cdefs.h> 3986231Stmm__FBSDID("$FreeBSD: head/sys/powerpc/powermac/openpic_macio.c 133521 2004-08-11 21:09:40Z marius $"); 4086231Stmm 4186231Stmm#include <sys/param.h> 4286231Stmm#include <sys/systm.h> 4388823Stmm#include <sys/module.h> 4486231Stmm#include <sys/bus.h> 4586231Stmm#include <sys/conf.h> 46113238Sjake#include <sys/kernel.h> 4786231Stmm 4886231Stmm#include <dev/ofw/openfirm.h> 4986231Stmm 5086231Stmm#include <machine/bus.h> 5186231Stmm#include <machine/intr.h> 5286231Stmm#include <machine/intr_machdep.h> 5388823Stmm#include <machine/md_var.h> 5488823Stmm#include <machine/nexusvar.h> 5586231Stmm#include <machine/pio.h> 5690617Stmm#include <machine/resource.h> 5790617Stmm 5886231Stmm#include <vm/vm.h> 5986231Stmm#include <vm/pmap.h> 6086231Stmm 6186231Stmm#include <sys/rman.h> 6286231Stmm 6386231Stmm#include <machine/openpicvar.h> 64115417Stmm#include <powerpc/powermac/maciovar.h> 65115417Stmm 66115417Stmm#include "pic_if.h" 6786231Stmm 68108800Stmmstruct openpic_ofw_softc { 6986231Stmm struct openpic_softc osc; 7088823Stmm struct resource *sc_memr; /* macio bus resource */ 7188823Stmm device_t sc_ndev; /* nexus device */ 7286231Stmm}; 7386231Stmm 7486231Stmmstatic struct openpic_ofw_softc *ofwpicsoftc; 7586231Stmm 7686231Stmm/* 7786231Stmm * MacIO interface 7886231Stmm */ 7986231Stmmstatic void openpic_ofw_identify(driver_t *, device_t); 8086231Stmmstatic int openpic_ofw_probe(device_t); 8186231Stmmstatic int openpic_ofw_attach(device_t); 8286231Stmmstatic int openpic_macio_probe(device_t); 8386231Stmmstatic int openpic_macio_attach(device_t); 8486231Stmm 8586231Stmm/* 8686231Stmm * Nexus attachment 8786231Stmm */ 8886231Stmmstatic device_method_t openpic_ofw_methods[] = { 8986231Stmm /* Device interface */ 9086231Stmm DEVMETHOD(device_identify, openpic_ofw_identify), 9186231Stmm DEVMETHOD(device_probe, openpic_ofw_probe), 9286231Stmm DEVMETHOD(device_attach, openpic_ofw_attach), 9386231Stmm 94105274Stmm /* PIC interface */ 95105274Stmm DEVMETHOD(pic_allocate_intr, openpic_allocate_intr), 9686231Stmm DEVMETHOD(pic_setup_intr, openpic_setup_intr), 9786231Stmm DEVMETHOD(pic_teardown_intr, openpic_teardown_intr), 9886231Stmm DEVMETHOD(pic_release_intr, openpic_release_intr), 99 100 { 0, 0 } 101}; 102 103static driver_t openpic_ofw_driver = { 104 "openpic", 105 openpic_ofw_methods, 106 sizeof(struct openpic_ofw_softc) 107}; 108 109static devclass_t openpic_ofw_devclass; 110 111DRIVER_MODULE(openpic_ofw, nexus, openpic_ofw_driver, openpic_ofw_devclass, 112 0, 0); 113 114static void 115openpic_ofw_identify(driver_t *driver, device_t parent) 116{ 117 device_t child; 118 phandle_t pic; 119 char type[40]; 120 121 pic = OF_finddevice("mpic"); 122 if (pic == -1) 123 return; 124 125 OF_getprop(pic, "device_type", type, sizeof(type)); 126 127 if (strcmp(type, "open-pic") != 0) 128 return; 129 130 child = BUS_ADD_CHILD(parent, 0, "openpic", 0); 131 if (child != NULL) 132 nexus_set_device_type(child, "macio"); 133} 134 135static int 136openpic_ofw_probe(device_t dev) 137{ 138 char *name; 139 char *type; 140 141 name = nexus_get_name(dev); 142 type = nexus_get_device_type(dev); 143 144 if (strcmp(name, "openpic") != 0 || 145 strcmp(type, "macio") != 0) 146 return (ENXIO); 147 148 device_set_desc(dev, OPENPIC_DEVSTR); 149 return (0); 150} 151 152static int 153openpic_ofw_attach(device_t dev) 154{ 155 KASSERT(ofwpicsoftc == NULL, ("ofw openpic: already probed")); 156 ofwpicsoftc = device_get_softc(dev); 157 ofwpicsoftc->sc_ndev = dev; 158 159 nexus_install_intcntlr(dev); 160 openpic_early_attach(dev); 161 return (0); 162} 163 164/* 165 * MacIO attachment 166 */ 167static device_method_t openpic_macio_methods[] = { 168 /* Device interface */ 169 DEVMETHOD(device_probe, openpic_macio_probe), 170 DEVMETHOD(device_attach, openpic_macio_attach), 171 172 { 0, 0 }, 173}; 174 175static driver_t openpic_macio_driver = { 176 "openpicmacio", 177 openpic_macio_methods, 178 0 179}; 180 181static devclass_t openpic_macio_devclass; 182 183DRIVER_MODULE(openpicmacio, macio, openpic_macio_driver, 184 openpic_macio_devclass, 0, 0); 185 186static int 187openpic_macio_probe(device_t dev) 188{ 189 char *type = macio_get_devtype(dev); 190 191 if (strcmp(type, "open-pic") != 0) 192 return (ENXIO); 193 194 /* 195 * The description was already printed out in the nexus 196 * probe, so don't do it again here 197 */ 198 device_set_desc(dev, "OpenPIC MacIO interrupt cell"); 199 if (!bootverbose) 200 device_quiet(dev); 201 return (0); 202} 203 204static int 205openpic_macio_attach(device_t dev) 206{ 207 struct openpic_ofw_softc *sc; 208 int rid; 209 210 sc = ofwpicsoftc; 211 KASSERT(sc != NULL, ("pic not nexus-probed\n")); 212 213 rid = 0; 214 sc->sc_memr = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, 215 RF_ACTIVE); 216 217 if (sc->sc_memr == NULL) { 218 device_printf(dev, "Could not alloc mem resource!\n"); 219 return (ENXIO); 220 } 221 222 sc->osc.sc_bt = rman_get_bustag(sc->sc_memr); 223 sc->osc.sc_bh = rman_get_bushandle(sc->sc_memr); 224 sc->osc.sc_altdev = dev; 225 226 return (openpic_attach(sc->sc_ndev)); 227} 228 229 230