central.c revision 167308
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 167308 2007-03-07 21:13:51Z 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/resource.h> 43 44#include <sys/rman.h> 45 46#include <sparc64/sbus/ofw_sbus.h> 47 48struct central_devinfo { 49 struct ofw_bus_devinfo cdi_obdinfo; 50 struct resource_list cdi_rl; 51}; 52 53struct central_softc { 54 int sc_nrange; 55 struct sbus_ranges *sc_ranges; 56}; 57 58static device_probe_t central_probe; 59static device_attach_t central_attach; 60static bus_print_child_t central_print_child; 61static bus_probe_nomatch_t central_probe_nomatch; 62static bus_alloc_resource_t central_alloc_resource; 63static bus_get_resource_list_t central_get_resource_list; 64static ofw_bus_get_devinfo_t central_get_devinfo; 65 66static int central_print_res(struct central_devinfo *); 67 68static device_method_t central_methods[] = { 69 /* Device interface */ 70 DEVMETHOD(device_probe, central_probe), 71 DEVMETHOD(device_attach, central_attach), 72 DEVMETHOD(device_shutdown, bus_generic_shutdown), 73 DEVMETHOD(device_suspend, bus_generic_suspend), 74 DEVMETHOD(device_resume, bus_generic_resume), 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(ofw_bus_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 = ofw_bus_get_node(dev); 134 135 sc->sc_nrange = OF_getprop_alloc(node, "ranges", 136 sizeof(*sc->sc_ranges), (void **)&sc->sc_ranges); 137 if (sc->sc_nrange == -1) { 138 device_printf(dev, "can't get ranges\n"); 139 return (ENXIO); 140 } 141 142 for (child = OF_child(node); child != 0; child = OF_peer(child)) { 143 cdi = malloc(sizeof(*cdi), M_DEVBUF, M_WAITOK | M_ZERO); 144 if (ofw_bus_gen_setup_devinfo(&cdi->cdi_obdinfo, child) != 0) { 145 free(cdi, M_DEVBUF); 146 continue; 147 } 148 nreg = OF_getprop_alloc(child, "reg", sizeof(*reg), 149 (void **)®); 150 if (nreg == -1) { 151 device_printf(dev, "<%s>: incomplete\n", 152 cdi->cdi_obdinfo.obd_name); 153 ofw_bus_gen_destroy_devinfo(&cdi->cdi_obdinfo); 154 free(cdi, M_DEVBUF); 155 continue; 156 } 157 resource_list_init(&cdi->cdi_rl); 158 for (i = 0; i < nreg; i++) 159 resource_list_add(&cdi->cdi_rl, SYS_RES_MEMORY, i, 160 reg[i].sbr_offset, reg[i].sbr_offset + 161 reg[i].sbr_size, reg[i].sbr_size); 162 free(reg, M_OFWPROP); 163 cdev = device_add_child(dev, NULL, -1); 164 if (cdev == NULL) { 165 device_printf(dev, "<%s>: device_add_child failed\n", 166 cdi->cdi_obdinfo.obd_name); 167 resource_list_free(&cdi->cdi_rl); 168 ofw_bus_gen_destroy_devinfo(&cdi->cdi_obdinfo); 169 free(cdi, M_DEVBUF); 170 continue; 171 } 172 device_set_ivars(cdev, cdi); 173 } 174 175 return (bus_generic_attach(dev)); 176} 177 178static int 179central_print_child(device_t dev, device_t child) 180{ 181 int rv; 182 183 rv = bus_print_child_header(dev, child); 184 rv += central_print_res(device_get_ivars(child)); 185 rv += bus_print_child_footer(dev, child); 186 return (rv); 187} 188 189static void 190central_probe_nomatch(device_t dev, device_t child) 191{ 192 const char *type; 193 194 device_printf(dev, "<%s>", ofw_bus_get_name(child)); 195 central_print_res(device_get_ivars(child)); 196 type = ofw_bus_get_type(child); 197 printf(" type %s (no driver attached)\n", 198 type != NULL ? type : "unknown"); 199} 200 201static struct resource * 202central_alloc_resource(device_t bus, device_t child, int type, int *rid, 203 u_long start, u_long end, u_long count, u_int flags) 204{ 205 struct resource_list *rl; 206 struct resource_list_entry *rle; 207 struct central_softc *sc; 208 struct resource *res; 209 bus_addr_t coffset; 210 bus_addr_t cend; 211 bus_addr_t phys; 212 int isdefault; 213 int passthrough; 214 int i; 215 216 isdefault = (start == 0UL && end == ~0UL); 217 passthrough = (device_get_parent(child) != bus); 218 res = NULL; 219 rle = NULL; 220 rl = BUS_GET_RESOURCE_LIST(bus, child); 221 sc = device_get_softc(bus); 222 switch (type) { 223 case SYS_RES_IRQ: 224 return (resource_list_alloc(rl, bus, child, type, rid, start, 225 end, count, flags)); 226 case SYS_RES_MEMORY: 227 if (!passthrough) { 228 rle = resource_list_find(rl, type, *rid); 229 if (rle == NULL) 230 return (NULL); 231 if (rle->res != NULL) 232 panic("%s: resource entry is busy", __func__); 233 if (isdefault) { 234 start = rle->start; 235 count = ulmax(count, rle->count); 236 end = ulmax(rle->end, start + count - 1); 237 } 238 } 239 for (i = 0; i < sc->sc_nrange; i++) { 240 coffset = sc->sc_ranges[i].coffset; 241 cend = coffset + sc->sc_ranges[i].size - 1; 242 if (start >= coffset && end <= cend) { 243 start -= coffset; 244 end -= coffset; 245 phys = sc->sc_ranges[i].poffset | 246 ((bus_addr_t)sc->sc_ranges[i].pspace << 32); 247 res = bus_generic_alloc_resource(bus, child, 248 type, rid, phys + start, phys + end, 249 count, flags); 250 if (!passthrough) 251 rle->res = res; 252 break; 253 } 254 } 255 break; 256 } 257 return (res); 258} 259 260static struct resource_list * 261central_get_resource_list(device_t bus, device_t child) 262{ 263 struct central_devinfo *cdi; 264 265 cdi = device_get_ivars(child); 266 return (&cdi->cdi_rl); 267} 268 269static const struct ofw_bus_devinfo * 270central_get_devinfo(device_t bus, device_t child) 271{ 272 struct central_devinfo *cdi; 273 274 cdi = device_get_ivars(child); 275 return (&cdi->cdi_obdinfo); 276} 277 278static int 279central_print_res(struct central_devinfo *cdi) 280{ 281 282 return (resource_list_print_type(&cdi->cdi_rl, "mem", SYS_RES_MEMORY, 283 "%#lx")); 284} 285