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/openpicreg.h> 55 #include <machine/openpicvar.h> 56 57 #include "pic_if.h" 58 59 /* 60 * OFW interface 61 */ 62 static int openpic_ofw_probe(device_t); 63 static int openpic_ofw_attach(device_t); 64 65 static void openpic_ofw_translate_code(device_t, u_int irq, int code, 66 enum intr_trigger *trig, enum intr_polarity *pol); 67 68 static device_method_t openpic_ofw_methods[] = { 69 /* Device interface */ 70 DEVMETHOD(device_probe, openpic_ofw_probe), 71 DEVMETHOD(device_attach, openpic_ofw_attach), 72 DEVMETHOD(device_suspend, openpic_suspend), 73 DEVMETHOD(device_resume, openpic_resume), 74 75 /* PIC interface */ 76 DEVMETHOD(pic_bind, openpic_bind), 77 DEVMETHOD(pic_config, openpic_config), 78 DEVMETHOD(pic_dispatch, openpic_dispatch), 79 DEVMETHOD(pic_enable, openpic_enable), 80 DEVMETHOD(pic_eoi, openpic_eoi), 81 DEVMETHOD(pic_ipi, openpic_ipi), 82 DEVMETHOD(pic_mask, openpic_mask), 83 DEVMETHOD(pic_unmask, openpic_unmask), 84 85 DEVMETHOD(pic_translate_code, openpic_ofw_translate_code), 86 87 DEVMETHOD_END 88 }; 89 90 static driver_t openpic_ofw_driver = { 91 "openpic", 92 openpic_ofw_methods, 93 sizeof(struct openpic_softc), 94 }; 95 96 DRIVER_MODULE(openpic, ofwbus, openpic_ofw_driver, openpic_devclass, 0, 0); 97 DRIVER_MODULE(openpic, simplebus, openpic_ofw_driver, openpic_devclass, 0, 0); 98 DRIVER_MODULE(openpic, macio, openpic_ofw_driver, openpic_devclass, 0, 0); 99 100 static int 101 openpic_ofw_probe(device_t dev) 102 { 103 const char *type = ofw_bus_get_type(dev); 104 105 if (type == NULL) 106 return (ENXIO); 107 108 if (!ofw_bus_is_compatible(dev, "chrp,open-pic") && 109 strcmp(type, "open-pic") != 0) 110 return (ENXIO); 111 112 /* 113 * On some U4 systems, there is a phantom MPIC in the mac-io cell. 114 * The uninorth driver will pick up the real PIC, so ignore it here. 115 */ 116 if (OF_finddevice("/u4") != (phandle_t)-1) 117 return (ENXIO); 118 119 device_set_desc(dev, OPENPIC_DEVSTR); 120 return (0); 121 } 122 123 static int 124 openpic_ofw_attach(device_t dev) 125 { 126 phandle_t xref, node; 127 128 node = ofw_bus_get_node(dev); 129 130 if (OF_getencprop(node, "phandle", &xref, sizeof(xref)) == -1 && 131 OF_getencprop(node, "ibm,phandle", &xref, sizeof(xref)) == -1 && 132 OF_getencprop(node, "linux,phandle", &xref, sizeof(xref)) == -1) 133 xref = node; 134 135 return (openpic_common_attach(dev, xref)); 136 } 137 138 static void 139 openpic_ofw_translate_code(device_t dev, u_int irq, int code, 140 enum intr_trigger *trig, enum intr_polarity *pol) 141 { 142 switch (code) { 143 case 0: 144 /* L to H edge */ 145 *trig = INTR_TRIGGER_EDGE; 146 *pol = INTR_POLARITY_HIGH; 147 break; 148 case 1: 149 /* Active L level */ 150 *trig = INTR_TRIGGER_LEVEL; 151 *pol = INTR_POLARITY_LOW; 152 break; 153 case 2: 154 /* Active H level */ 155 *trig = INTR_TRIGGER_LEVEL; 156 *pol = INTR_POLARITY_HIGH; 157 break; 158 case 3: 159 /* H to L edge */ 160 *trig = INTR_TRIGGER_EDGE; 161 *pol = INTR_POLARITY_LOW; 162 break; 163 default: 164 *trig = INTR_TRIGGER_CONFORM; 165 *pol = INTR_POLARITY_CONFORM; 166 } 167 } 168 169