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("$FreeBSD$"); 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 */ 61 static int openpic_ofw_probe(device_t); 62 static int openpic_ofw_attach(device_t); 63 64 static void openpic_ofw_translate_code(device_t, u_int irq, int code, 65 enum intr_trigger *trig, enum intr_polarity *pol); 66 67 static device_method_t openpic_ofw_methods[] = { 68 /* Device interface */ 69 DEVMETHOD(device_probe, openpic_ofw_probe), 70 DEVMETHOD(device_attach, openpic_ofw_attach), 71 72 /* PIC interface */ 73 DEVMETHOD(pic_bind, openpic_bind), 74 DEVMETHOD(pic_config, openpic_config), 75 DEVMETHOD(pic_dispatch, openpic_dispatch), 76 DEVMETHOD(pic_enable, openpic_enable), 77 DEVMETHOD(pic_eoi, openpic_eoi), 78 DEVMETHOD(pic_ipi, openpic_ipi), 79 DEVMETHOD(pic_mask, openpic_mask), 80 DEVMETHOD(pic_unmask, openpic_unmask), 81 82 DEVMETHOD(pic_translate_code, openpic_ofw_translate_code), 83 84 DEVMETHOD_END 85 }; 86 87 static driver_t openpic_ofw_driver = { 88 "openpic", 89 openpic_ofw_methods, 90 sizeof(struct openpic_softc), 91 }; 92 93 DRIVER_MODULE(openpic, nexus, openpic_ofw_driver, openpic_devclass, 0, 0); 94 DRIVER_MODULE(openpic, simplebus, openpic_ofw_driver, openpic_devclass, 0, 0); 95 DRIVER_MODULE(openpic, macio, openpic_ofw_driver, openpic_devclass, 0, 0); 96 97 static int 98 openpic_ofw_probe(device_t dev) 99 { 100 const char *type = ofw_bus_get_type(dev); 101 102 if (type == NULL) 103 return (ENXIO); 104 105 if (!ofw_bus_is_compatible(dev, "chrp,open-pic") && 106 strcmp(type, "open-pic") != 0) 107 return (ENXIO); 108 109 /* 110 * On some U4 systems, there is a phantom MPIC in the mac-io cell. 111 * The uninorth driver will pick up the real PIC, so ignore it here. 112 */ 113 if (OF_finddevice("/u4") != (phandle_t)-1) 114 return (ENXIO); 115 116 device_set_desc(dev, OPENPIC_DEVSTR); 117 return (0); 118 } 119 120 static int 121 openpic_ofw_attach(device_t dev) 122 { 123 phandle_t xref, node; 124 125 node = ofw_bus_get_node(dev); 126 127 if (OF_getprop(node, "phandle", &xref, sizeof(xref)) == -1 && 128 OF_getprop(node, "ibm,phandle", &xref, sizeof(xref)) == -1 && 129 OF_getprop(node, "linux,phandle", &xref, sizeof(xref)) == -1) 130 xref = node; 131 132 return (openpic_common_attach(dev, xref)); 133 } 134 135 static void 136 openpic_ofw_translate_code(device_t dev, u_int irq, int code, 137 enum intr_trigger *trig, enum intr_polarity *pol) 138 { 139 switch (code) { 140 case 0: 141 /* L to H edge */ 142 *trig = INTR_TRIGGER_EDGE; 143 *pol = INTR_POLARITY_HIGH; 144 break; 145 case 1: 146 /* Active L level */ 147 *trig = INTR_TRIGGER_LEVEL; 148 *pol = INTR_POLARITY_LOW; 149 break; 150 case 2: 151 /* Active H level */ 152 *trig = INTR_TRIGGER_LEVEL; 153 *pol = INTR_POLARITY_HIGH; 154 break; 155 case 3: 156 /* H to L edge */ 157 *trig = INTR_TRIGGER_EDGE; 158 *pol = INTR_POLARITY_LOW; 159 break; 160 default: 161 *trig = INTR_TRIGGER_CONFORM; 162 *pol = INTR_POLARITY_CONFORM; 163 } 164 } 165 166