openpic_ofw.c revision 265959
1/*- 2 * Copyright 2003 by Peter Grehan. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 3. The name of the author may not be used to endorse or promote products 13 * derived from this software without specific prior written permission. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 20 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 21 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 22 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 */ 28 29#include <sys/cdefs.h> 30__FBSDID("$FreeBSD: stable/10/sys/powerpc/ofw/openpic_ofw.c 265959 2014-05-13 17:12:07Z ian $"); 31 32#include <sys/param.h> 33#include <sys/systm.h> 34#include <sys/module.h> 35#include <sys/bus.h> 36#include <sys/conf.h> 37#include <sys/kernel.h> 38 39#include <dev/ofw/ofw_bus.h> 40#include <dev/ofw/ofw_bus_subr.h> 41#include <dev/ofw/openfirm.h> 42 43#include <machine/bus.h> 44#include <machine/intr_machdep.h> 45#include <machine/md_var.h> 46#include <machine/pio.h> 47#include <machine/resource.h> 48 49#include <vm/vm.h> 50#include <vm/pmap.h> 51 52#include <sys/rman.h> 53 54#include <machine/openpicvar.h> 55 56#include "pic_if.h" 57 58/* 59 * OFW interface 60 */ 61static int openpic_ofw_probe(device_t); 62static int openpic_ofw_attach(device_t); 63 64static device_method_t openpic_ofw_methods[] = { 65 /* Device interface */ 66 DEVMETHOD(device_probe, openpic_ofw_probe), 67 DEVMETHOD(device_attach, openpic_ofw_attach), 68 69 /* PIC interface */ 70 DEVMETHOD(pic_bind, openpic_bind), 71 DEVMETHOD(pic_config, openpic_config), 72 DEVMETHOD(pic_dispatch, openpic_dispatch), 73 DEVMETHOD(pic_enable, openpic_enable), 74 DEVMETHOD(pic_eoi, openpic_eoi), 75 DEVMETHOD(pic_ipi, openpic_ipi), 76 DEVMETHOD(pic_mask, openpic_mask), 77 DEVMETHOD(pic_unmask, openpic_unmask), 78 79 DEVMETHOD_END 80}; 81 82static driver_t openpic_ofw_driver = { 83 "openpic", 84 openpic_ofw_methods, 85 sizeof(struct openpic_softc), 86}; 87 88DRIVER_MODULE(openpic, nexus, openpic_ofw_driver, openpic_devclass, 0, 0); 89DRIVER_MODULE(openpic, simplebus, openpic_ofw_driver, openpic_devclass, 0, 0); 90DRIVER_MODULE(openpic, macio, openpic_ofw_driver, openpic_devclass, 0, 0); 91 92static int 93openpic_ofw_probe(device_t dev) 94{ 95 const char *type = ofw_bus_get_type(dev); 96 97 if (type == NULL) 98 return (ENXIO); 99 100 if (!ofw_bus_is_compatible(dev, "chrp,open-pic") && 101 strcmp(type, "open-pic") != 0) 102 return (ENXIO); 103 104 /* 105 * On some U4 systems, there is a phantom MPIC in the mac-io cell. 106 * The uninorth driver will pick up the real PIC, so ignore it here. 107 */ 108 if (OF_finddevice("/u4") != (phandle_t)-1) 109 return (ENXIO); 110 111 device_set_desc(dev, OPENPIC_DEVSTR); 112 return (0); 113} 114 115static int 116openpic_ofw_attach(device_t dev) 117{ 118 phandle_t xref, node; 119 120 node = ofw_bus_get_node(dev); 121 122 if (OF_getprop(node, "phandle", &xref, sizeof(xref)) == -1 && 123 OF_getprop(node, "ibm,phandle", &xref, sizeof(xref)) == -1 && 124 OF_getprop(node, "linux,phandle", &xref, sizeof(xref)) == -1) 125 xref = node; 126 127 return (openpic_common_attach(dev, xref)); 128} 129 130