central.c revision 152684
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 152684 2005-11-22 16:39:44Z 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/ofw_bus_subr.h> 39#include <dev/ofw/openfirm.h> 40 41#include <machine/bus.h> 42#include <machine/nexusvar.h> 43#include <machine/ofw_upa.h> 44#include <machine/resource.h> 45 46#include <sys/rman.h> 47 48#include <sparc64/sbus/ofw_sbus.h> 49 50struct central_devinfo { 51 struct ofw_bus_devinfo cdi_obdinfo; 52 struct resource_list cdi_rl; 53}; 54 55struct central_softc { 56 phandle_t sc_node; 57 int sc_nrange; 58 struct sbus_ranges *sc_ranges; 59}; 60 61static device_probe_t central_probe; 62static device_attach_t central_attach; 63static bus_print_child_t central_print_child; 64static bus_probe_nomatch_t central_probe_nomatch; 65static bus_alloc_resource_t central_alloc_resource; 66static bus_get_resource_list_t central_get_resource_list; 67static ofw_bus_get_devinfo_t central_get_devinfo; 68 69static int central_print_res(struct central_devinfo *); 70 71static device_method_t central_methods[] = { 72 /* Device interface. */ 73 DEVMETHOD(device_probe, central_probe), 74 DEVMETHOD(device_attach, central_attach), 75 76 /* Bus interface. */ 77 DEVMETHOD(bus_print_child, central_print_child), 78 DEVMETHOD(bus_probe_nomatch, central_probe_nomatch), 79 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 80 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 81 DEVMETHOD(bus_alloc_resource, central_alloc_resource), 82 DEVMETHOD(bus_release_resource, bus_generic_rl_release_resource), 83 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 84 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 85 DEVMETHOD(bus_get_resource_list, central_get_resource_list), 86 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource), 87 88 /* ofw_bus interface */ 89 DEVMETHOD(ofw_bus_get_devinfo, central_get_devinfo), 90 DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat), 91 DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model), 92 DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name), 93 DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node), 94 DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type), 95 96 { NULL, NULL } 97}; 98 99static driver_t central_driver = { 100 "central", 101 central_methods, 102 sizeof(struct central_softc), 103}; 104 105static devclass_t central_devclass; 106 107DRIVER_MODULE(central, nexus, central_driver, central_devclass, 0, 0); 108 109static int 110central_probe(device_t dev) 111{ 112 113 if (strcmp(nexus_get_name(dev), "central") == 0) { 114 device_set_desc(dev, "central"); 115 return (0); 116 } 117 return (ENXIO); 118} 119 120static int 121central_attach(device_t dev) 122{ 123 struct central_devinfo *cdi; 124 struct sbus_regs *reg; 125 struct central_softc *sc; 126 phandle_t child; 127 phandle_t node; 128 device_t cdev; 129 int nreg; 130 int i; 131 132 sc = device_get_softc(dev); 133 node = nexus_get_node(dev); 134 sc->sc_node = node; 135 136 sc->sc_nrange = OF_getprop_alloc(node, "ranges", 137 sizeof(*sc->sc_ranges), (void **)&sc->sc_ranges); 138 if (sc->sc_nrange == -1) { 139 device_printf(dev, "can't get ranges\n"); 140 return (ENXIO); 141 } 142 143 for (child = OF_child(node); child != 0; child = OF_peer(child)) { 144 cdi = malloc(sizeof(*cdi), M_DEVBUF, M_WAITOK | M_ZERO); 145 if (ofw_bus_gen_setup_devinfo(&cdi->cdi_obdinfo, child) != 0) { 146 free(cdi, M_DEVBUF); 147 continue; 148 } 149 nreg = OF_getprop_alloc(child, "reg", sizeof(*reg), 150 (void **)®); 151 if (nreg == -1) { 152 device_printf(dev, "<%s>: incomplete\n", 153 cdi->cdi_obdinfo.obd_name); 154 ofw_bus_gen_destroy_devinfo(&cdi->cdi_obdinfo); 155 free(cdi, M_DEVBUF); 156 continue; 157 } 158 resource_list_init(&cdi->cdi_rl); 159 for (i = 0; i < nreg; i++) 160 resource_list_add(&cdi->cdi_rl, SYS_RES_MEMORY, i, 161 reg[i].sbr_offset, reg[i].sbr_offset + 162 reg[i].sbr_size, reg[i].sbr_size); 163 free(reg, M_OFWPROP); 164 cdev = device_add_child(dev, NULL, -1); 165 if (cdev == NULL) { 166 device_printf(dev, "<%s>: device_add_child failed\n", 167 cdi->cdi_obdinfo.obd_name); 168 resource_list_free(&cdi->cdi_rl); 169 ofw_bus_gen_destroy_devinfo(&cdi->cdi_obdinfo); 170 free(cdi, M_DEVBUF); 171 continue; 172 } 173 device_set_ivars(cdev, cdi); 174 } 175 176 return (bus_generic_attach(dev)); 177} 178 179static int 180central_print_child(device_t dev, device_t child) 181{ 182 int rv; 183 184 rv = bus_print_child_header(dev, child); 185 rv += central_print_res(device_get_ivars(child)); 186 rv += bus_print_child_footer(dev, child); 187 return (rv); 188} 189 190static void 191central_probe_nomatch(device_t dev, device_t child) 192{ 193 const char *type; 194 195 device_printf(dev, "<%s>", ofw_bus_get_name(child)); 196 central_print_res(device_get_ivars(child)); 197 type = ofw_bus_get_type(child); 198 printf(" type %s (no driver attached)\n", 199 type != NULL ? type : "unknown"); 200} 201 202static struct resource * 203central_alloc_resource(device_t bus, device_t child, int type, int *rid, 204 u_long start, u_long end, u_long count, u_int flags) 205{ 206 struct resource_list *rl; 207 struct resource_list_entry *rle; 208 struct central_softc *sc; 209 struct resource *res; 210 bus_addr_t coffset; 211 bus_addr_t cend; 212 bus_addr_t phys; 213 int isdefault; 214 int passthrough; 215 int i; 216 217 isdefault = (start == 0UL && end == ~0UL); 218 passthrough = (device_get_parent(child) != bus); 219 res = NULL; 220 rle = NULL; 221 rl = BUS_GET_RESOURCE_LIST(bus, child); 222 sc = device_get_softc(bus); 223 switch (type) { 224 case SYS_RES_IRQ: 225 return (resource_list_alloc(rl, bus, child, type, rid, start, 226 end, count, flags)); 227 case SYS_RES_MEMORY: 228 if (!passthrough) { 229 rle = resource_list_find(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 } 240 for (i = 0; i < sc->sc_nrange; i++) { 241 coffset = sc->sc_ranges[i].coffset; 242 cend = coffset + sc->sc_ranges[i].size - 1; 243 if (start >= coffset && end <= cend) { 244 start -= coffset; 245 end -= coffset; 246 phys = sc->sc_ranges[i].poffset | 247 ((bus_addr_t)sc->sc_ranges[i].pspace << 32); 248 res = bus_generic_alloc_resource(bus, child, 249 type, rid, phys + start, phys + end, 250 count, flags); 251 if (!passthrough) 252 rle->res = res; 253 break; 254 } 255 } 256 break; 257 } 258 return (res); 259} 260 261static struct resource_list * 262central_get_resource_list(device_t bus, device_t child) 263{ 264 struct central_devinfo *cdi; 265 266 cdi = device_get_ivars(child); 267 return (&cdi->cdi_rl); 268} 269 270static const struct ofw_bus_devinfo * 271central_get_devinfo(device_t bus, device_t child) 272{ 273 struct central_devinfo *cdi; 274 275 cdi = device_get_ivars(child); 276 return (&cdi->cdi_obdinfo); 277} 278 279static int 280central_print_res(struct central_devinfo *cdi) 281{ 282 283 return (resource_list_print_type(&cdi->cdi_rl, "mem", SYS_RES_MEMORY, 284 "%#lx")); 285} 286