1 /*- 2 * Copyright (c) 2016 Svatopluk Kraus 3 * Copyright (c) 2016 Michal Meloun 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, 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 #include <sys/cdefs.h> 29 __FBSDID("$FreeBSD$"); 30 31 #include <sys/param.h> 32 #include <sys/bus.h> 33 #include <sys/conf.h> 34 #include <sys/kernel.h> 35 #include <sys/module.h> 36 #include <sys/rman.h> 37 #include <sys/systm.h> 38 39 #include <machine/fdt.h> 40 #include <machine/intr.h> 41 #include <machine/resource.h> 42 43 #include <dev/ofw/ofw_bus.h> 44 #include <dev/ofw/ofw_bus_subr.h> 45 46 #include "pic_if.h" 47 48 static struct ofw_compat_data compat_data[] = { 49 {"ti,omap4-wugen-mpu", 1}, 50 {NULL, 0} 51 }; 52 53 struct omap4_wugen_sc { 54 device_t sc_dev; 55 struct resource *sc_mem_res; 56 device_t sc_parent; 57 }; 58 59 static int 60 omap4_wugen_activate_intr(device_t dev, struct intr_irqsrc *isrc, 61 struct resource *res, struct intr_map_data *data) 62 { 63 struct omap4_wugen_sc *sc = device_get_softc(dev); 64 65 return (PIC_ACTIVATE_INTR(sc->sc_parent, isrc, res, data)); 66 } 67 68 static void 69 omap4_wugen_disable_intr(device_t dev, struct intr_irqsrc *isrc) 70 { 71 struct omap4_wugen_sc *sc = device_get_softc(dev); 72 73 PIC_DISABLE_INTR(sc->sc_parent, isrc); 74 } 75 76 static void 77 omap4_wugen_enable_intr(device_t dev, struct intr_irqsrc *isrc) 78 { 79 struct omap4_wugen_sc *sc = device_get_softc(dev); 80 81 PIC_ENABLE_INTR(sc->sc_parent, isrc); 82 } 83 84 static int 85 omap4_wugen_map_intr(device_t dev, struct intr_map_data *data, 86 struct intr_irqsrc **isrcp) 87 { 88 struct omap4_wugen_sc *sc = device_get_softc(dev); 89 90 return (PIC_MAP_INTR(sc->sc_parent, data, isrcp)); 91 } 92 93 static int 94 omap4_wugen_deactivate_intr(device_t dev, struct intr_irqsrc *isrc, 95 struct resource *res, struct intr_map_data *data) 96 { 97 struct omap4_wugen_sc *sc = device_get_softc(dev); 98 99 return (PIC_DEACTIVATE_INTR(sc->sc_parent, isrc, res, data)); 100 } 101 102 static int 103 omap4_wugen_setup_intr(device_t dev, struct intr_irqsrc *isrc, 104 struct resource *res, struct intr_map_data *data) 105 { 106 struct omap4_wugen_sc *sc = device_get_softc(dev); 107 108 return (PIC_SETUP_INTR(sc->sc_parent, isrc, res, data)); 109 } 110 111 static int 112 omap4_wugen_teardown_intr(device_t dev, struct intr_irqsrc *isrc, 113 struct resource *res, struct intr_map_data *data) 114 { 115 struct omap4_wugen_sc *sc = device_get_softc(dev); 116 117 return (PIC_TEARDOWN_INTR(sc->sc_parent, isrc, res, data)); 118 } 119 120 static void 121 omap4_wugen_pre_ithread(device_t dev, struct intr_irqsrc *isrc) 122 { 123 struct omap4_wugen_sc *sc = device_get_softc(dev); 124 125 PIC_PRE_ITHREAD(sc->sc_parent, isrc); 126 } 127 128 129 static void 130 omap4_wugen_post_ithread(device_t dev, struct intr_irqsrc *isrc) 131 { 132 struct omap4_wugen_sc *sc = device_get_softc(dev); 133 134 PIC_POST_ITHREAD(sc->sc_parent, isrc); 135 } 136 137 static void 138 omap4_wugen_post_filter(device_t dev, struct intr_irqsrc *isrc) 139 { 140 struct omap4_wugen_sc *sc = device_get_softc(dev); 141 142 PIC_POST_FILTER(sc->sc_parent, isrc); 143 } 144 145 #ifdef SMP 146 static int 147 omap4_wugen_bind_intr(device_t dev, struct intr_irqsrc *isrc) 148 { 149 struct omap4_wugen_sc *sc = device_get_softc(dev); 150 151 return (PIC_BIND_INTR(sc->sc_parent, isrc)); 152 } 153 #endif 154 155 static int 156 omap4_wugen_probe(device_t dev) 157 { 158 159 if (!ofw_bus_status_okay(dev)) 160 return (ENXIO); 161 162 if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0) 163 return (ENXIO); 164 165 return (BUS_PROBE_DEFAULT); 166 } 167 168 static int 169 omap4_wugen_detach(device_t dev) 170 { 171 struct omap4_wugen_sc *sc; 172 173 sc = device_get_softc(dev); 174 if (sc->sc_mem_res != NULL) { 175 bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->sc_mem_res); 176 sc->sc_mem_res = NULL; 177 } 178 return (0); 179 } 180 181 static int 182 omap4_wugen_attach(device_t dev) 183 { 184 struct omap4_wugen_sc *sc; 185 phandle_t node; 186 phandle_t parent_xref; 187 int rid, rv; 188 189 sc = device_get_softc(dev); 190 sc->sc_dev = dev; 191 node = ofw_bus_get_node(dev); 192 193 rv = OF_getencprop(node, "interrupt-parent", &parent_xref, 194 sizeof(parent_xref)); 195 if (rv <= 0) { 196 device_printf(dev, "can't read parent node property\n"); 197 goto fail; 198 } 199 sc->sc_parent = OF_device_from_xref(parent_xref); 200 if (sc->sc_parent == NULL) { 201 device_printf(dev, "can't find parent controller\n"); 202 goto fail; 203 } 204 205 rid = 0; 206 sc->sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, 207 RF_ACTIVE); 208 if (sc->sc_mem_res == NULL) { 209 device_printf(dev, "can't allocate resources\n"); 210 return (ENXIO); 211 } 212 213 if (intr_pic_register(dev, OF_xref_from_node(node)) == NULL) { 214 device_printf(dev, "can't register PIC\n"); 215 goto fail; 216 } 217 return (0); 218 219 fail: 220 omap4_wugen_detach(dev); 221 return (ENXIO); 222 } 223 224 static device_method_t omap4_wugen_methods[] = { 225 DEVMETHOD(device_probe, omap4_wugen_probe), 226 DEVMETHOD(device_attach, omap4_wugen_attach), 227 DEVMETHOD(device_detach, omap4_wugen_detach), 228 229 /* Interrupt controller interface */ 230 DEVMETHOD(pic_activate_intr, omap4_wugen_activate_intr), 231 DEVMETHOD(pic_disable_intr, omap4_wugen_disable_intr), 232 DEVMETHOD(pic_enable_intr, omap4_wugen_enable_intr), 233 DEVMETHOD(pic_map_intr, omap4_wugen_map_intr), 234 DEVMETHOD(pic_deactivate_intr, omap4_wugen_deactivate_intr), 235 DEVMETHOD(pic_setup_intr, omap4_wugen_setup_intr), 236 DEVMETHOD(pic_teardown_intr, omap4_wugen_teardown_intr), 237 DEVMETHOD(pic_pre_ithread, omap4_wugen_pre_ithread), 238 DEVMETHOD(pic_post_ithread, omap4_wugen_post_ithread), 239 DEVMETHOD(pic_post_filter, omap4_wugen_post_filter), 240 #ifdef SMP 241 DEVMETHOD(pic_bind_intr, omap4_wugen_bind_intr), 242 #endif 243 DEVMETHOD_END 244 }; 245 devclass_t omap4_wugen_devclass; 246 DEFINE_CLASS_0(omap4_wugen, omap4_wugen_driver, omap4_wugen_methods, 247 sizeof(struct omap4_wugen_sc)); 248 EARLY_DRIVER_MODULE(omap4_wugen, simplebus, omap4_wugen_driver, 249 omap4_wugen_devclass, NULL, NULL, 250 BUS_PASS_INTERRUPT + BUS_PASS_ORDER_MIDDLE + 1); 251