central.c revision 143141
1/*- 2 * Copyright (c) 2003 Jake Burkholder. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> 28__FBSDID("$FreeBSD: head/sys/sparc64/central/central.c 143141 2005-03-04 22:21:11Z marius $"); 29 30#include <sys/param.h> 31#include <sys/systm.h> 32#include <sys/bus.h> 33#include <sys/kernel.h> 34#include <sys/malloc.h> 35#include <sys/module.h> 36 37#include <dev/ofw/ofw_bus.h> 38#include <dev/ofw/openfirm.h> 39 40#include <machine/bus.h> 41#include <machine/nexusvar.h> 42#include <machine/ofw_upa.h> 43#include <machine/resource.h> 44 45#include <sys/rman.h> 46 47#include <sparc64/sbus/ofw_sbus.h> 48 49struct central_devinfo { 50 char *cdi_compat; 51 char *cdi_model; 52 char *cdi_name; 53 char *cdi_type; 54 phandle_t cdi_node; 55 struct resource_list cdi_rl; 56}; 57 58struct central_softc { 59 phandle_t sc_node; 60 int sc_nrange; 61 struct sbus_ranges *sc_ranges; 62}; 63 64static device_probe_t central_probe; 65static device_attach_t central_attach; 66static bus_print_child_t central_print_child; 67static bus_probe_nomatch_t central_probe_nomatch; 68static bus_alloc_resource_t central_alloc_resource; 69static bus_release_resource_t central_release_resource; 70static ofw_bus_get_compat_t central_get_compat; 71static ofw_bus_get_model_t central_get_model; 72static ofw_bus_get_name_t central_get_name; 73static ofw_bus_get_node_t central_get_node; 74static ofw_bus_get_type_t central_get_type; 75 76static device_method_t central_methods[] = { 77 /* Device interface. */ 78 DEVMETHOD(device_probe, central_probe), 79 DEVMETHOD(device_attach, central_attach), 80 81 /* Bus interface. */ 82 DEVMETHOD(bus_print_child, central_print_child), 83 DEVMETHOD(bus_probe_nomatch, central_probe_nomatch), 84 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 85 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 86 DEVMETHOD(bus_alloc_resource, central_alloc_resource), 87 DEVMETHOD(bus_release_resource, central_release_resource), 88 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 89 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 90 91 /* ofw_bus interface */ 92 DEVMETHOD(ofw_bus_get_compat, central_get_compat), 93 DEVMETHOD(ofw_bus_get_model, central_get_model), 94 DEVMETHOD(ofw_bus_get_name, central_get_name), 95 DEVMETHOD(ofw_bus_get_node, central_get_node), 96 DEVMETHOD(ofw_bus_get_type, central_get_type), 97 98 { NULL, NULL } 99}; 100 101static driver_t central_driver = { 102 "central", 103 central_methods, 104 sizeof(struct central_softc), 105}; 106 107static devclass_t central_devclass; 108 109DRIVER_MODULE(central, nexus, central_driver, central_devclass, 0, 0); 110 111static int 112central_probe(device_t dev) 113{ 114 115 if (strcmp(nexus_get_name(dev), "central") == 0) { 116 device_set_desc(dev, "central"); 117 return (0); 118 } 119 return (ENXIO); 120} 121 122static int 123central_attach(device_t dev) 124{ 125 struct central_devinfo *cdi; 126 struct sbus_regs *reg; 127 struct central_softc *sc; 128 phandle_t child; 129 phandle_t node; 130 bus_addr_t size; 131 bus_addr_t off; 132 device_t cdev; 133 char *name; 134 int nreg; 135 int i; 136 137 sc = device_get_softc(dev); 138 node = nexus_get_node(dev); 139 sc->sc_node = node; 140 141 sc->sc_nrange = OF_getprop_alloc(node, "ranges", 142 sizeof(*sc->sc_ranges), (void **)&sc->sc_ranges); 143 if (sc->sc_nrange == -1) { 144 device_printf(dev, "can't get ranges\n"); 145 return (ENXIO); 146 } 147 148 for (child = OF_child(node); child != 0; child = OF_peer(child)) { 149 if ((OF_getprop_alloc(child, "name", 1, (void **)&name)) == -1) 150 continue; 151 cdev = device_add_child(dev, NULL, -1); 152 if (cdev != NULL) { 153 cdi = malloc(sizeof(*cdi), M_DEVBUF, M_WAITOK | M_ZERO); 154 if (cdi == NULL) 155 continue; 156 cdi->cdi_name = name; 157 cdi->cdi_node = child; 158 OF_getprop_alloc(child, "compatible", 1, 159 (void **)&cdi->cdi_compat); 160 OF_getprop_alloc(child, "device_type", 1, 161 (void **)&cdi->cdi_type); 162 OF_getprop_alloc(child, "model", 1, 163 (void **)&cdi->cdi_model); 164 resource_list_init(&cdi->cdi_rl); 165 nreg = OF_getprop_alloc(child, "reg", sizeof(*reg), 166 (void **)®); 167 if (nreg != -1) { 168 for (i = 0; i < nreg; i++) { 169 off = reg[i].sbr_offset; 170 size = reg[i].sbr_size; 171 resource_list_add(&cdi->cdi_rl, 172 SYS_RES_MEMORY, i, off, off + size, 173 size); 174 } 175 free(reg, M_OFWPROP); 176 } 177 device_set_ivars(cdev, cdi); 178 } else 179 free(name, M_OFWPROP); 180 } 181 182 return (bus_generic_attach(dev)); 183} 184 185static int 186central_print_child(device_t dev, device_t child) 187{ 188 struct central_devinfo *cdi; 189 int rv; 190 191 cdi = device_get_ivars(child); 192 rv = bus_print_child_header(dev, child); 193 rv += resource_list_print_type(&cdi->cdi_rl, "mem", 194 SYS_RES_MEMORY, "%#lx"); 195 rv += bus_print_child_footer(dev, child); 196 return (rv); 197} 198 199static void 200central_probe_nomatch(device_t dev, device_t child) 201{ 202 struct central_devinfo *cdi; 203 204 cdi = device_get_ivars(child); 205 device_printf(dev, "<%s>", cdi->cdi_name); 206 resource_list_print_type(&cdi->cdi_rl, "mem", SYS_RES_MEMORY, "%#lx"); 207 printf(" type %s (no driver attached)\n", 208 cdi->cdi_type != NULL ? cdi->cdi_type : "unknown"); 209} 210 211static struct resource * 212central_alloc_resource(device_t bus, device_t child, int type, int *rid, 213 u_long start, u_long end, u_long count, u_int flags) 214{ 215 struct resource_list_entry *rle; 216 struct central_devinfo *cdi; 217 struct central_softc *sc; 218 struct resource *res; 219 bus_addr_t coffset; 220 bus_addr_t cend; 221 bus_addr_t phys; 222 int isdefault; 223 int i; 224 225 isdefault = (start == 0UL && end == ~0UL); 226 res = NULL; 227 sc = device_get_softc(bus); 228 cdi = device_get_ivars(child); 229 rle = resource_list_find(&cdi->cdi_rl, type, *rid); 230 if (rle == NULL) 231 return (NULL); 232 if (rle->res != NULL) 233 panic("%s: resource entry is busy", __func__); 234 if (isdefault) { 235 start = rle->start; 236 count = ulmax(count, rle->count); 237 end = ulmax(rle->end, start + count - 1); 238 } 239 switch (type) { 240 case SYS_RES_IRQ: 241 res = bus_generic_alloc_resource(bus, child, type, rid, 242 start, end, count, flags); 243 break; 244 case SYS_RES_MEMORY: 245 for (i = 0; i < sc->sc_nrange; i++) { 246 coffset = sc->sc_ranges[i].coffset; 247 cend = coffset + sc->sc_ranges[i].size - 1; 248 if (start >= coffset && end <= cend) { 249 start -= coffset; 250 end -= coffset; 251 phys = sc->sc_ranges[i].poffset | 252 ((bus_addr_t)sc->sc_ranges[i].pspace << 32); 253 res = bus_generic_alloc_resource(bus, child, 254 type, rid, phys + start, phys + end, 255 count, flags); 256 rle->res = res; 257 break; 258 } 259 } 260 break; 261 default: 262 break; 263 } 264 return (res); 265} 266 267static int 268central_release_resource(device_t bus, device_t child, int type, int rid, 269 struct resource *r) 270{ 271 struct resource_list_entry *rle; 272 struct central_devinfo *cdi; 273 int error; 274 275 error = bus_generic_release_resource(bus, child, type, rid, r); 276 if (error != 0) 277 return (error); 278 cdi = device_get_ivars(child); 279 rle = resource_list_find(&cdi->cdi_rl, type, rid); 280 if (rle == NULL) 281 panic("%s: can't find resource", __func__); 282 if (rle->res == NULL) 283 panic("%s: resource entry is not busy", __func__); 284 rle->res = NULL; 285 return (error); 286} 287 288static const char * 289central_get_compat(device_t bus, device_t dev) 290{ 291 struct central_devinfo *dinfo; 292 293 dinfo = device_get_ivars(dev); 294 return (dinfo->cdi_compat); 295} 296 297static const char * 298central_get_model(device_t bus, device_t dev) 299{ 300 struct central_devinfo *dinfo; 301 302 dinfo = device_get_ivars(dev); 303 return (dinfo->cdi_model); 304} 305 306static const char * 307central_get_name(device_t bus, device_t dev) 308{ 309 struct central_devinfo *dinfo; 310 311 dinfo = device_get_ivars(dev); 312 return (dinfo->cdi_name); 313} 314 315static phandle_t 316central_get_node(device_t bus, device_t dev) 317{ 318 struct central_devinfo *dinfo; 319 320 dinfo = device_get_ivars(dev); 321 return (dinfo->cdi_node); 322} 323 324static const char * 325central_get_type(device_t bus, device_t dev) 326{ 327 struct central_devinfo *dinfo; 328 329 dinfo = device_get_ivars(dev); 330 return (dinfo->cdi_type); 331} 332