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sys/sparc64/sbus/sbus.c
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1 /*- 2 * Copyright (c) 1998 The NetBSD Foundation, Inc. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to The NetBSD Foundation 6 * by Paul Kranenburg. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the NetBSD 19 * Foundation, Inc. and its contributors. 20 * 4. Neither the name of The NetBSD Foundation nor the names of its 21 * contributors may be used to endorse or promote products derived 22 * from this software without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 25 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 26 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 27 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 28 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 32 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 33 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 34 * POSSIBILITY OF SUCH DAMAGE. 35 */ 36 /*- 37 * Copyright (c) 1992, 1993 38 * The Regents of the University of California. All rights reserved. 39 * 40 * This software was developed by the Computer Systems Engineering group 41 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 42 * contributed to Berkeley. 43 * 44 * All advertising materials mentioning features or use of this software 45 * must display the following acknowledgement: 46 * This product includes software developed by the University of 47 * California, Lawrence Berkeley Laboratory. 48 * 49 * Redistribution and use in source and binary forms, with or without 50 * modification, are permitted provided that the following conditions 51 * are met: 52 * 1. Redistributions of source code must retain the above copyright 53 * notice, this list of conditions and the following disclaimer. 54 * 2. Redistributions in binary form must reproduce the above copyright 55 * notice, this list of conditions and the following disclaimer in the 56 * documentation and/or other materials provided with the distribution. 57 * 4. Neither the name of the University nor the names of its contributors 58 * may be used to endorse or promote products derived from this software 59 * without specific prior written permission. 60 * 61 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 62 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 63 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 64 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 65 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 66 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 67 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 68 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 69 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 70 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 71 * SUCH DAMAGE. 72 */ 73 /*- 74 * Copyright (c) 1999 Eduardo Horvath 75 * Copyright (c) 2002 by Thomas Moestl <tmm@FreeBSD.org>. 76 * All rights reserved. 77 * 78 * Redistribution and use in source and binary forms, with or without 79 * modification, are permitted provided that the following conditions 80 * are met: 81 * 1. Redistributions of source code must retain the above copyright 82 * notice, this list of conditions and the following disclaimer. 83 * 84 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND 85 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 86 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 87 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE 88 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 89 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 90 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 91 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 92 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 93 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 94 * SUCH DAMAGE. 95 * 96 * from: @(#)sbus.c 8.1 (Berkeley) 6/11/93 97 * from: NetBSD: sbus.c,v 1.46 2001/10/07 20:30:41 eeh Exp 98 */ 99 100 #include <sys/cdefs.h> 101 __FBSDID("$FreeBSD: releng/6.2/sys/sparc64/sbus/sbus.c 159864 2006-06-22 20:52:26Z marius $"); 102 103 /* 104 * SBus support. 105 */ 106 107 #include <sys/param.h> 108 #include <sys/systm.h> 109 #include <sys/bus.h> 110 #include <sys/kernel.h> 111 #include <sys/malloc.h> 112 #include <sys/module.h> 113 #include <sys/pcpu.h> 114 #include <sys/reboot.h> 115 116 #include <dev/ofw/ofw_bus.h> 117 #include <dev/ofw/openfirm.h> 118 119 #include <machine/bus.h> 120 #include <machine/bus_private.h> 121 #include <machine/iommureg.h> 122 #include <machine/bus_common.h> 123 #include <machine/intr_machdep.h> 124 #include <machine/nexusvar.h> 125 #include <machine/ofw_upa.h> 126 #include <machine/resource.h> 127 128 #include <sys/rman.h> 129 130 #include <machine/iommuvar.h> 131 132 #include <sparc64/sbus/ofw_sbus.h> 133 #include <sparc64/sbus/sbusreg.h> 134 #include <sparc64/sbus/sbusvar.h> 135 136 struct sbus_devinfo { 137 int sdi_burstsz; 138 int sdi_clockfreq; 139 char *sdi_compat; /* PROM compatible */ 140 char *sdi_model; /* PROM model */ 141 char *sdi_name; /* PROM name */ 142 phandle_t sdi_node; /* PROM node */ 143 int sdi_slot; 144 char *sdi_type; /* PROM device_type */ 145 146 struct resource_list sdi_rl; 147 }; 148 149 /* Range descriptor, allocated for each sc_range. */ 150 struct sbus_rd { 151 bus_addr_t rd_poffset; 152 bus_addr_t rd_pend; 153 int rd_slot; 154 bus_addr_t rd_coffset; 155 bus_addr_t rd_cend; 156 struct rman rd_rman; 157 bus_space_handle_t rd_bushandle; 158 struct resource *rd_res; 159 }; 160 161 struct sbus_softc { 162 bus_space_tag_t sc_bustag; 163 bus_space_handle_t sc_bushandle; 164 bus_dma_tag_t sc_dmatag; 165 bus_dma_tag_t sc_cdmatag; 166 bus_space_tag_t sc_cbustag; 167 int sc_clockfreq; /* clock frequency (in Hz) */ 168 struct upa_regs *sc_reg; 169 int sc_nreg; 170 int sc_nrange; 171 struct sbus_rd *sc_rd; 172 int sc_burst; /* burst transfer sizes supp. */ 173 174 struct resource *sc_sysio_res; 175 int sc_ign; /* IGN for this sysio */ 176 struct iommu_state sc_is; /* IOMMU state (iommuvar.h) */ 177 178 struct resource *sc_ot_ires; 179 void *sc_ot_ihand; 180 struct resource *sc_pf_ires; 181 void *sc_pf_ihand; 182 }; 183 184 struct sbus_clr { 185 struct sbus_softc *scl_sc; 186 bus_addr_t scl_clr; /* clear register */ 187 driver_intr_t *scl_handler; /* handler to call */ 188 void *scl_arg; /* argument for the handler */ 189 void *scl_cookie; /* parent bus int. cookie */ 190 }; 191 192 #define SYSIO_READ8(sc, off) \ 193 bus_space_read_8((sc)->sc_bustag, (sc)->sc_bushandle, (off)) 194 #define SYSIO_WRITE8(sc, off, v) \ 195 bus_space_write_8((sc)->sc_bustag, (sc)->sc_bushandle, (off), (v)) 196 197 static device_probe_t sbus_probe; 198 static device_attach_t sbus_attach; 199 static bus_print_child_t sbus_print_child; 200 static bus_probe_nomatch_t sbus_probe_nomatch; 201 static bus_read_ivar_t sbus_read_ivar; 202 static bus_get_resource_list_t sbus_get_resource_list; 203 static bus_setup_intr_t sbus_setup_intr; 204 static bus_teardown_intr_t sbus_teardown_intr; 205 static bus_alloc_resource_t sbus_alloc_resource; 206 static bus_release_resource_t sbus_release_resource; 207 static bus_activate_resource_t sbus_activate_resource; 208 static bus_deactivate_resource_t sbus_deactivate_resource; 209 static ofw_bus_get_compat_t sbus_get_compat; 210 static ofw_bus_get_model_t sbus_get_model; 211 static ofw_bus_get_name_t sbus_get_name; 212 static ofw_bus_get_node_t sbus_get_node; 213 static ofw_bus_get_type_t sbus_get_type; 214 215 static int sbus_inlist(const char *, const char **); 216 static struct sbus_devinfo * sbus_setup_dinfo(struct sbus_softc *sc, 217 phandle_t node, char *name); 218 static void sbus_destroy_dinfo(struct sbus_devinfo *dinfo); 219 static void sbus_intr_stub(void *); 220 static bus_space_tag_t sbus_alloc_bustag(struct sbus_softc *); 221 static void sbus_overtemp(void *); 222 static void sbus_pwrfail(void *); 223 224 static device_method_t sbus_methods[] = { 225 /* Device interface */ 226 DEVMETHOD(device_probe, sbus_probe), 227 DEVMETHOD(device_attach, sbus_attach), 228 DEVMETHOD(device_shutdown, bus_generic_shutdown), 229 DEVMETHOD(device_suspend, bus_generic_suspend), 230 DEVMETHOD(device_resume, bus_generic_resume), 231 232 /* Bus interface */ 233 DEVMETHOD(bus_print_child, sbus_print_child), 234 DEVMETHOD(bus_probe_nomatch, sbus_probe_nomatch), 235 DEVMETHOD(bus_read_ivar, sbus_read_ivar), 236 DEVMETHOD(bus_setup_intr, sbus_setup_intr), 237 DEVMETHOD(bus_teardown_intr, sbus_teardown_intr), 238 DEVMETHOD(bus_alloc_resource, sbus_alloc_resource), 239 DEVMETHOD(bus_activate_resource, sbus_activate_resource), 240 DEVMETHOD(bus_deactivate_resource, sbus_deactivate_resource), 241 DEVMETHOD(bus_release_resource, sbus_release_resource), 242 DEVMETHOD(bus_get_resource_list, sbus_get_resource_list), 243 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource), 244 245 /* ofw_bus interface */ 246 DEVMETHOD(ofw_bus_get_compat, sbus_get_compat), 247 DEVMETHOD(ofw_bus_get_model, sbus_get_model), 248 DEVMETHOD(ofw_bus_get_name, sbus_get_name), 249 DEVMETHOD(ofw_bus_get_node, sbus_get_node), 250 DEVMETHOD(ofw_bus_get_type, sbus_get_type), 251 252 { 0, 0 } 253 }; 254 255 static driver_t sbus_driver = { 256 "sbus", 257 sbus_methods, 258 sizeof(struct sbus_softc), 259 }; 260 261 static devclass_t sbus_devclass; 262 263 DRIVER_MODULE(sbus, nexus, sbus_driver, sbus_devclass, 0, 0); 264 265 #define OFW_SBUS_TYPE "sbus" 266 #define OFW_SBUS_NAME "sbus" 267 268 static const char *sbus_order_first[] = { 269 "auxio", 270 "dma", 271 NULL 272 }; 273 274 static int 275 sbus_inlist(const char *name, const char **list) 276 { 277 int i; 278 279 if (name == NULL) 280 return (0); 281 for (i = 0; list[i] != NULL; i++) { 282 if (strcmp(name, list[i]) == 0) 283 return (1); 284 } 285 return (0); 286 } 287 288 static int 289 sbus_probe(device_t dev) 290 { 291 char *t; 292 293 t = nexus_get_device_type(dev); 294 if (((t == NULL || strcmp(t, OFW_SBUS_TYPE) != 0)) && 295 strcmp(nexus_get_name(dev), OFW_SBUS_NAME) != 0) 296 return (ENXIO); 297 device_set_desc(dev, "U2S UPA-SBus bridge"); 298 return (0); 299 } 300 301 static int 302 sbus_attach(device_t dev) 303 { 304 struct sbus_softc *sc; 305 struct sbus_devinfo *sdi; 306 struct sbus_ranges *range; 307 struct resource *res; 308 device_t cdev; 309 bus_addr_t phys; 310 bus_size_t size; 311 char *name, *cname; 312 phandle_t child, node; 313 u_int64_t mr; 314 int intr, clock, rid, vec, i; 315 316 sc = device_get_softc(dev); 317 node = nexus_get_node(dev); 318 319 if ((sc->sc_nreg = OF_getprop_alloc(node, "reg", sizeof(*sc->sc_reg), 320 (void **)&sc->sc_reg)) == -1) { 321 panic("%s: error getting reg property", __func__); 322 } 323 if (sc->sc_nreg < 1) 324 panic("%s: bogus properties", __func__); 325 phys = UPA_REG_PHYS(&sc->sc_reg[0]); 326 size = UPA_REG_SIZE(&sc->sc_reg[0]); 327 rid = 0; 328 sc->sc_sysio_res = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, phys, 329 phys + size - 1, size, RF_ACTIVE); 330 if (sc->sc_sysio_res == NULL || 331 rman_get_start(sc->sc_sysio_res) != phys) 332 panic("%s: cannot allocate device memory", __func__); 333 sc->sc_bustag = rman_get_bustag(sc->sc_sysio_res); 334 sc->sc_bushandle = rman_get_bushandle(sc->sc_sysio_res); 335 336 if (OF_getprop(node, "interrupts", &intr, sizeof(intr)) == -1) 337 panic("%s: cannot get IGN", __func__); 338 sc->sc_ign = (intr & INTMAP_IGN_MASK) >> INTMAP_IGN_SHIFT; 339 sc->sc_cbustag = sbus_alloc_bustag(sc); 340 341 /* 342 * Record clock frequency for synchronous SCSI. 343 * IS THIS THE CORRECT DEFAULT?? 344 */ 345 if (OF_getprop(node, "clock-frequency", &clock, sizeof(clock)) == -1) 346 clock = 25000000; 347 sc->sc_clockfreq = clock; 348 clock /= 1000; 349 device_printf(dev, "clock %d.%03d MHz\n", clock / 1000, clock % 1000); 350 351 /* 352 * Collect address translations from the OBP. 353 */ 354 if ((sc->sc_nrange = OF_getprop_alloc(node, "ranges", 355 sizeof(*range), (void **)&range)) == -1) { 356 panic("%s: error getting ranges property", __func__); 357 } 358 sc->sc_rd = (struct sbus_rd *)malloc(sizeof(*sc->sc_rd) * sc->sc_nrange, 359 M_DEVBUF, M_NOWAIT); 360 if (sc->sc_rd == NULL) 361 panic("%s: cannot allocate rmans", __func__); 362 /* 363 * Preallocate all space that the SBus bridge decodes, so that nothing 364 * else gets in the way; set up rmans etc. 365 */ 366 for (i = 0; i < sc->sc_nrange; i++) { 367 phys = range[i].poffset | ((bus_addr_t)range[i].pspace << 32); 368 size = range[i].size; 369 sc->sc_rd[i].rd_slot = range[i].cspace; 370 sc->sc_rd[i].rd_coffset = range[i].coffset; 371 sc->sc_rd[i].rd_cend = sc->sc_rd[i].rd_coffset + size; 372 rid = 0; 373 if ((res = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, phys, 374 phys + size - 1, size, RF_ACTIVE)) == NULL) 375 panic("%s: cannot allocate decoded range", __func__); 376 sc->sc_rd[i].rd_bushandle = rman_get_bushandle(res); 377 sc->sc_rd[i].rd_rman.rm_type = RMAN_ARRAY; 378 sc->sc_rd[i].rd_rman.rm_descr = "SBus Device Memory"; 379 if (rman_init(&sc->sc_rd[i].rd_rman) != 0 || 380 rman_manage_region(&sc->sc_rd[i].rd_rman, 0, size) != 0) 381 panic("%s: failed to set up memory rman", __func__); 382 sc->sc_rd[i].rd_poffset = phys; 383 sc->sc_rd[i].rd_pend = phys + size; 384 sc->sc_rd[i].rd_res = res; 385 } 386 free(range, M_OFWPROP); 387 388 /* 389 * Get the SBus burst transfer size if burst transfers are supported. 390 * XXX: is the default correct? 391 */ 392 if (OF_getprop(node, "burst-sizes", &sc->sc_burst, 393 sizeof(sc->sc_burst)) == -1 || sc->sc_burst == 0) 394 sc->sc_burst = SBUS_BURST_DEF; 395 396 /* initalise the IOMMU */ 397 398 /* punch in our copies */ 399 sc->sc_is.is_bustag = sc->sc_bustag; 400 sc->sc_is.is_bushandle = sc->sc_bushandle; 401 sc->sc_is.is_iommu = SBR_IOMMU; 402 sc->sc_is.is_dtag = SBR_IOMMU_TLB_TAG_DIAG; 403 sc->sc_is.is_ddram = SBR_IOMMU_TLB_DATA_DIAG; 404 sc->sc_is.is_dqueue = SBR_IOMMU_QUEUE_DIAG; 405 sc->sc_is.is_dva = SBR_IOMMU_SVADIAG; 406 sc->sc_is.is_dtcmp = 0; 407 sc->sc_is.is_sb[0] = SBR_STRBUF; 408 sc->sc_is.is_sb[1] = 0; 409 410 /* give us a nice name.. */ 411 name = (char *)malloc(32, M_DEVBUF, M_NOWAIT); 412 if (name == NULL) 413 panic("%s: cannot malloc iommu name", __func__); 414 snprintf(name, 32, "%s dvma", device_get_name(dev)); 415 416 /* 417 * Note: the SBus IOMMU ignores the high bits of an address, so a NULL 418 * DMA pointer will be translated by the first page of the IOTSB. 419 * To detect bugs we'll allocate and ignore the first entry. 420 */ 421 iommu_init(name, &sc->sc_is, 3, -1, 1); 422 423 /* Create the DMA tag. */ 424 sc->sc_dmatag = nexus_get_dmatag(dev); 425 if (bus_dma_tag_create(sc->sc_dmatag, 8, 1, 0, 0x3ffffffff, NULL, NULL, 426 0x3ffffffff, 0xff, 0xffffffff, 0, NULL, NULL, &sc->sc_cdmatag) != 0) 427 panic("%s: bus_dma_tag_create failed", __func__); 428 /* Customize the tag. */ 429 sc->sc_cdmatag->dt_cookie = &sc->sc_is; 430 sc->sc_cdmatag->dt_mt = &iommu_dma_methods; 431 /* XXX: register as root dma tag (kludge). */ 432 sparc64_root_dma_tag = sc->sc_cdmatag; 433 434 /* Enable the over-temperature and power-fail interrupts. */ 435 rid = 0; 436 mr = SYSIO_READ8(sc, SBR_THERM_INT_MAP); 437 vec = INTVEC(mr); 438 if ((sc->sc_ot_ires = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, vec, 439 vec, 1, RF_ACTIVE)) == NULL) 440 panic("%s: failed to get temperature interrupt", __func__); 441 bus_setup_intr(dev, sc->sc_ot_ires, INTR_TYPE_MISC | INTR_FAST, 442 sbus_overtemp, sc, &sc->sc_ot_ihand); 443 SYSIO_WRITE8(sc, SBR_THERM_INT_MAP, INTMAP_ENABLE(mr, PCPU_GET(mid))); 444 rid = 0; 445 mr = SYSIO_READ8(sc, SBR_POWER_INT_MAP); 446 vec = INTVEC(mr); 447 if ((sc->sc_pf_ires = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, vec, 448 vec, 1, RF_ACTIVE)) == NULL) 449 panic("%s: failed to get power fail interrupt", __func__); 450 bus_setup_intr(dev, sc->sc_pf_ires, INTR_TYPE_MISC | INTR_FAST, 451 sbus_pwrfail, sc, &sc->sc_pf_ihand); 452 SYSIO_WRITE8(sc, SBR_POWER_INT_MAP, INTMAP_ENABLE(mr, PCPU_GET(mid))); 453 454 /* Initialize the counter-timer. */ 455 sparc64_counter_init(sc->sc_bustag, sc->sc_bushandle, SBR_TC0); 456 457 /* 458 * Loop through ROM children, fixing any relative addresses 459 * and then configuring each device. 460 */ 461 for (child = OF_child(node); child != 0; child = OF_peer(child)) { 462 if ((OF_getprop_alloc(child, "name", 1, (void **)&cname)) == -1) 463 continue; 464 465 if ((sdi = sbus_setup_dinfo(sc, child, cname)) == NULL) { 466 device_printf(dev, "<%s>: incomplete\n", cname); 467 free(cname, M_OFWPROP); 468 continue; 469 } 470 /* 471 * For devices where there are variants that are actually 472 * split into two SBus devices (as opposed to the first 473 * half of the device being a SBus device and the second 474 * half hanging off of the first one) like 'auxio' and 475 * 'SUNW,fdtwo' or 'dma' and 'esp' probe the SBus device 476 * which is a prerequisite to the driver attaching to the 477 * second one with a lower order. Saves us from dealing 478 * with different probe orders in the respective device 479 * drivers which generally is more hackish. 480 */ 481 cdev = device_add_child_ordered(dev, (OF_child(child) == 0 && 482 sbus_inlist(cname, sbus_order_first)) ? SBUS_ORDER_FIRST : 483 SBUS_ORDER_NORMAL, NULL, -1); 484 if (cdev == NULL) 485 panic("%s: device_add_child_ordered failed", __func__); 486 device_set_ivars(cdev, sdi); 487 } 488 return (bus_generic_attach(dev)); 489 } 490 491 static struct sbus_devinfo * 492 sbus_setup_dinfo(struct sbus_softc *sc, phandle_t node, char *name) 493 { 494 struct sbus_devinfo *sdi; 495 struct sbus_regs *reg; 496 u_int32_t base, iv, *intr; 497 int i, nreg, nintr, slot, rslot; 498 499 sdi = malloc(sizeof(*sdi), M_DEVBUF, M_ZERO | M_WAITOK); 500 if (sdi == NULL) 501 return (NULL); 502 resource_list_init(&sdi->sdi_rl); 503 sdi->sdi_name = name; 504 sdi->sdi_node = node; 505 OF_getprop_alloc(node, "compatible", 1, (void **)&sdi->sdi_compat); 506 OF_getprop_alloc(node, "device_type", 1, (void **)&sdi->sdi_type); 507 OF_getprop_alloc(node, "model", 1, (void **)&sdi->sdi_model); 508 slot = -1; 509 nreg = OF_getprop_alloc(node, "reg", sizeof(*reg), (void **)®); 510 if (nreg == -1) { 511 if (sdi->sdi_type == NULL || 512 strcmp(sdi->sdi_type, "hierarchical") != 0) { 513 sbus_destroy_dinfo(sdi); 514 return (NULL); 515 } 516 } else { 517 for (i = 0; i < nreg; i++) { 518 base = reg[i].sbr_offset; 519 if (SBUS_ABS(base)) { 520 rslot = SBUS_ABS_TO_SLOT(base); 521 base = SBUS_ABS_TO_OFFSET(base); 522 } else 523 rslot = reg[i].sbr_slot; 524 if (slot != -1 && slot != rslot) 525 panic("%s: multiple slots", __func__); 526 slot = rslot; 527 528 resource_list_add(&sdi->sdi_rl, SYS_RES_MEMORY, i, 529 base, base + reg[i].sbr_size, reg[i].sbr_size); 530 } 531 free(reg, M_OFWPROP); 532 } 533 sdi->sdi_slot = slot; 534 535 /* 536 * The `interrupts' property contains the SBus interrupt level. 537 */ 538 nintr = OF_getprop_alloc(node, "interrupts", sizeof(*intr), 539 (void **)&intr); 540 if (nintr != -1) { 541 for (i = 0; i < nintr; i++) { 542 iv = intr[i]; 543 /* 544 * SBus card devices need the slot number encoded into 545 * the vector as this is generally not done. 546 */ 547 if ((iv & INTMAP_OBIO_MASK) == 0) 548 iv |= slot << 3; 549 /* Set the ign as appropriate. */ 550 iv |= sc->sc_ign << INTMAP_IGN_SHIFT; 551 resource_list_add(&sdi->sdi_rl, SYS_RES_IRQ, i, 552 iv, iv, 1); 553 } 554 free(intr, M_OFWPROP); 555 } 556 if (OF_getprop(node, "burst-sizes", &sdi->sdi_burstsz, 557 sizeof(sdi->sdi_burstsz)) == -1) 558 sdi->sdi_burstsz = sc->sc_burst; 559 else 560 sdi->sdi_burstsz &= sc->sc_burst; 561 if (OF_getprop(node, "clock-frequency", &sdi->sdi_clockfreq, 562 sizeof(sdi->sdi_clockfreq)) == -1) 563 sdi->sdi_clockfreq = sc->sc_clockfreq; 564 565 return (sdi); 566 } 567 568 /* Free everything except sdi_name, which is handled separately. */ 569 static void 570 sbus_destroy_dinfo(struct sbus_devinfo *dinfo) 571 { 572 573 resource_list_free(&dinfo->sdi_rl); 574 if (dinfo->sdi_compat != NULL) 575 free(dinfo->sdi_compat, M_OFWPROP); 576 if (dinfo->sdi_model != NULL) 577 free(dinfo->sdi_model, M_OFWPROP); 578 if (dinfo->sdi_type != NULL) 579 free(dinfo->sdi_type, M_OFWPROP); 580 free(dinfo, M_DEVBUF); 581 } 582 583 static int 584 sbus_print_child(device_t dev, device_t child) 585 { 586 struct sbus_devinfo *dinfo; 587 struct resource_list *rl; 588 int rv; 589 590 dinfo = device_get_ivars(child); 591 rl = &dinfo->sdi_rl; 592 rv = bus_print_child_header(dev, child); 593 rv += resource_list_print_type(rl, "mem", SYS_RES_MEMORY, "%#lx"); 594 rv += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld"); 595 rv += bus_print_child_footer(dev, child); 596 return (rv); 597 } 598 599 static void 600 sbus_probe_nomatch(device_t dev, device_t child) 601 { 602 struct sbus_devinfo *dinfo; 603 struct resource_list *rl; 604 605 dinfo = device_get_ivars(child); 606 rl = &dinfo->sdi_rl; 607 device_printf(dev, "<%s>", dinfo->sdi_name); 608 resource_list_print_type(rl, "mem", SYS_RES_MEMORY, "%#lx"); 609 resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld"); 610 printf(" type %s (no driver attached)\n", 611 dinfo->sdi_type != NULL ? dinfo->sdi_type : "unknown"); 612 } 613 614 static int 615 sbus_read_ivar(device_t dev, device_t child, int which, uintptr_t *result) 616 { 617 struct sbus_softc *sc; 618 struct sbus_devinfo *dinfo; 619 620 sc = device_get_softc(dev); 621 if ((dinfo = device_get_ivars(child)) == NULL) 622 return (ENOENT); 623 switch (which) { 624 case SBUS_IVAR_BURSTSZ: 625 *result = dinfo->sdi_burstsz; 626 break; 627 case SBUS_IVAR_CLOCKFREQ: 628 *result = dinfo->sdi_clockfreq; 629 break; 630 case SBUS_IVAR_IGN: 631 *result = sc->sc_ign; 632 break; 633 case SBUS_IVAR_SLOT: 634 *result = dinfo->sdi_slot; 635 break; 636 default: 637 return (ENOENT); 638 } 639 return (0); 640 } 641 642 static struct resource_list * 643 sbus_get_resource_list(device_t dev, device_t child) 644 { 645 struct sbus_devinfo *sdi; 646 647 sdi = device_get_ivars(child); 648 return (&sdi->sdi_rl); 649 } 650 651 /* Write to the correct clr register, and call the actual handler. */ 652 static void 653 sbus_intr_stub(void *arg) 654 { 655 struct sbus_clr *scl; 656 657 scl = (struct sbus_clr *)arg; 658 scl->scl_handler(scl->scl_arg); 659 SYSIO_WRITE8(scl->scl_sc, scl->scl_clr, 0); 660 } 661 662 static int 663 sbus_setup_intr(device_t dev, device_t child, struct resource *ires, int flags, 664 driver_intr_t *intr, void *arg, void **cookiep) 665 { 666 struct sbus_softc *sc; 667 struct sbus_clr *scl; 668 bus_addr_t intrmapptr, intrclrptr, intrptr; 669 u_int64_t intrmap; 670 u_int32_t inr, slot; 671 int error, i; 672 long vec; 673 674 sc = device_get_softc(dev); 675 scl = (struct sbus_clr *)malloc(sizeof(*scl), M_DEVBUF, M_NOWAIT); 676 if (scl == NULL) 677 return (ENOMEM); 678 intrptr = intrmapptr = intrclrptr = 0; 679 intrmap = 0; 680 vec = rman_get_start(ires); 681 inr = INTVEC(vec); 682 if ((inr & INTMAP_OBIO_MASK) == 0) { 683 /* 684 * We're in an SBus slot, register the map and clear 685 * intr registers. 686 */ 687 slot = INTSLOT(vec); 688 intrmapptr = SBR_SLOT0_INT_MAP + slot * 8; 689 intrclrptr = SBR_SLOT0_INT_CLR + 690 (slot * 8 * 8) + (INTPRI(vec) * 8); 691 /* Enable the interrupt, insert IGN. */ 692 intrmap = inr | (sc->sc_ign << INTMAP_IGN_SHIFT); 693 } else { 694 intrptr = SBR_SCSI_INT_MAP; 695 /* Insert IGN */ 696 inr |= sc->sc_ign << INTMAP_IGN_SHIFT; 697 for (i = 0; intrptr <= SBR_RESERVED_INT_MAP && 698 INTVEC(intrmap = SYSIO_READ8(sc, intrptr)) != inr; 699 intrptr += 8, i++) 700 ; 701 if (INTVEC(intrmap) == inr) { 702 /* Register the map and clear intr registers */ 703 intrmapptr = intrptr; 704 intrclrptr = SBR_SCSI_INT_CLR + i * 8; 705 /* Enable the interrupt */ 706 } else 707 panic("%s: IRQ not found!", __func__); 708 } 709 710 scl->scl_sc = sc; 711 scl->scl_arg = arg; 712 scl->scl_handler = intr; 713 scl->scl_clr = intrclrptr; 714 /* Disable the interrupt while we fiddle with it */ 715 SYSIO_WRITE8(sc, intrmapptr, intrmap & ~INTMAP_V); 716 error = BUS_SETUP_INTR(device_get_parent(dev), child, ires, flags, 717 sbus_intr_stub, scl, cookiep); 718 if (error != 0) { 719 free(scl, M_DEVBUF); 720 return (error); 721 } 722 scl->scl_cookie = *cookiep; 723 *cookiep = scl; 724 725 /* 726 * Clear the interrupt, it might have been triggered before it was 727 * set up. 728 */ 729 SYSIO_WRITE8(sc, intrclrptr, 0); 730 /* 731 * Enable the interrupt and program the target module now we have the 732 * handler installed. 733 */ 734 SYSIO_WRITE8(sc, intrmapptr, INTMAP_ENABLE(intrmap, PCPU_GET(mid))); 735 return (error); 736 } 737 738 static int 739 sbus_teardown_intr(device_t dev, device_t child, 740 struct resource *vec, void *cookie) 741 { 742 struct sbus_clr *scl; 743 int error; 744 745 scl = (struct sbus_clr *)cookie; 746 error = BUS_TEARDOWN_INTR(device_get_parent(dev), child, vec, 747 scl->scl_cookie); 748 /* 749 * Don't disable the interrupt for now, so that stray interrupts get 750 * detected... 751 */ 752 if (error != 0) 753 free(scl, M_DEVBUF); 754 return (error); 755 } 756 757 static struct resource * 758 sbus_alloc_resource(device_t bus, device_t child, int type, int *rid, 759 u_long start, u_long end, u_long count, u_int flags) 760 { 761 struct sbus_softc *sc; 762 struct rman *rm; 763 struct resource *rv; 764 struct resource_list *rl; 765 struct resource_list_entry *rle; 766 device_t schild; 767 bus_space_handle_t bh; 768 bus_addr_t toffs; 769 bus_size_t tend; 770 int i, slot; 771 int isdefault, needactivate, passthrough; 772 773 isdefault = (start == 0UL && end == ~0UL); 774 needactivate = flags & RF_ACTIVE; 775 passthrough = (device_get_parent(child) != bus); 776 rle = NULL; 777 sc = device_get_softc(bus); 778 rl = BUS_GET_RESOURCE_LIST(bus, child); 779 switch (type) { 780 case SYS_RES_IRQ: 781 return (resource_list_alloc(rl, bus, child, type, rid, start, 782 end, count, flags)); 783 case SYS_RES_MEMORY: 784 if (!passthrough) { 785 rle = resource_list_find(rl, type, *rid); 786 if (rle == NULL) 787 return (NULL); 788 if (rle->res != NULL) 789 panic("%s: resource entry is busy", __func__); 790 if (isdefault) { 791 start = rle->start; 792 count = ulmax(count, rle->count); 793 end = ulmax(rle->end, start + count - 1); 794 } 795 } 796 rm = NULL; 797 bh = toffs = tend = 0; 798 schild = child; 799 while (device_get_parent(schild) != bus) 800 schild = device_get_parent(child); 801 slot = sbus_get_slot(schild); 802 for (i = 0; i < sc->sc_nrange; i++) { 803 if (sc->sc_rd[i].rd_slot != slot || 804 start < sc->sc_rd[i].rd_coffset || 805 start > sc->sc_rd[i].rd_cend) 806 continue; 807 /* Disallow cross-range allocations. */ 808 if (end > sc->sc_rd[i].rd_cend) 809 return (NULL); 810 /* We've found the connection to the parent bus */ 811 toffs = start - sc->sc_rd[i].rd_coffset; 812 tend = end - sc->sc_rd[i].rd_coffset; 813 rm = &sc->sc_rd[i].rd_rman; 814 bh = sc->sc_rd[i].rd_bushandle; 815 break; 816 } 817 if (rm == NULL) 818 return (NULL); 819 flags &= ~RF_ACTIVE; 820 rv = rman_reserve_resource(rm, toffs, tend, count, flags, 821 child); 822 if (rv == NULL) 823 return (NULL); 824 rman_set_bustag(rv, sc->sc_cbustag); 825 rman_set_bushandle(rv, bh + rman_get_start(rv)); 826 if (needactivate) { 827 if (bus_activate_resource(child, type, *rid, rv)) { 828 rman_release_resource(rv); 829 return (NULL); 830 } 831 } 832 if (!passthrough) 833 rle->res = rv; 834 return (rv); 835 default: 836 return (NULL); 837 } 838 } 839 840 static int 841 sbus_activate_resource(device_t bus, device_t child, int type, int rid, 842 struct resource *r) 843 { 844 void *p; 845 int error; 846 847 if (type == SYS_RES_IRQ) { 848 return (BUS_ACTIVATE_RESOURCE(device_get_parent(bus), 849 child, type, rid, r)); 850 } 851 if (type == SYS_RES_MEMORY) { 852 /* 853 * Need to memory-map the device space, as some drivers depend 854 * on the virtual address being set and useable. 855 */ 856 error = sparc64_bus_mem_map(rman_get_bustag(r), 857 rman_get_bushandle(r), rman_get_size(r), 0, 0, &p); 858 if (error != 0) 859 return (error); 860 rman_set_virtual(r, p); 861 } 862 return (rman_activate_resource(r)); 863 } 864 865 static int 866 sbus_deactivate_resource(device_t bus, device_t child, int type, int rid, 867 struct resource *r) 868 { 869 870 if (type == SYS_RES_IRQ) { 871 return (BUS_DEACTIVATE_RESOURCE(device_get_parent(bus), 872 child, type, rid, r)); 873 } 874 if (type == SYS_RES_MEMORY) { 875 sparc64_bus_mem_unmap(rman_get_virtual(r), rman_get_size(r)); 876 rman_set_virtual(r, NULL); 877 } 878 return (rman_deactivate_resource(r)); 879 } 880 881 static int 882 sbus_release_resource(device_t bus, device_t child, int type, int rid, 883 struct resource *r) 884 { 885 struct resource_list *rl; 886 struct resource_list_entry *rle; 887 int error, passthrough; 888 889 passthrough = (device_get_parent(child) != bus); 890 rl = BUS_GET_RESOURCE_LIST(bus, child); 891 if (type == SYS_RES_IRQ) 892 return (resource_list_release(rl, bus, child, type, rid, r)); 893 if ((rman_get_flags(r) & RF_ACTIVE) != 0) { 894 error = bus_deactivate_resource(child, type, rid, r); 895 if (error != 0) 896 return (error); 897 } 898 error = rman_release_resource(r); 899 if (error != 0 || passthrough) 900 return (error); 901 rle = resource_list_find(rl, type, rid); 902 if (rle == NULL) 903 panic("%s: cannot find resource", __func__); 904 if (rle->res == NULL) 905 panic("%s: resource entry is not busy", __func__); 906 rle->res = NULL; 907 return (0); 908 } 909 910 /* 911 * Handle an overtemp situation. 912 * 913 * SPARCs have temperature sensors which generate interrupts 914 * if the machine's temperature exceeds a certain threshold. 915 * This handles the interrupt and powers off the machine. 916 * The same needs to be done to PCI controller drivers. 917 */ 918 static void 919 sbus_overtemp(void *arg) 920 { 921 922 printf("DANGER: OVER TEMPERATURE detected\nShutting down NOW.\n"); 923 shutdown_nice(RB_POWEROFF); 924 } 925 926 /* Try to shut down in time in case of power failure. */ 927 static void 928 sbus_pwrfail(void *arg) 929 { 930 931 printf("Power failure detected\nShutting down NOW.\n"); 932 shutdown_nice(0); 933 } 934 935 static bus_space_tag_t 936 sbus_alloc_bustag(struct sbus_softc *sc) 937 { 938 bus_space_tag_t sbt; 939 940 sbt = (bus_space_tag_t)malloc(sizeof(struct bus_space_tag), M_DEVBUF, 941 M_NOWAIT | M_ZERO); 942 if (sbt == NULL) 943 panic("%s: out of memory", __func__); 944 945 sbt->bst_cookie = sc; 946 sbt->bst_parent = sc->sc_bustag; 947 sbt->bst_type = SBUS_BUS_SPACE; 948 return (sbt); 949 } 950 951 static const char * 952 sbus_get_compat(device_t bus, device_t dev) 953 { 954 struct sbus_devinfo *dinfo; 955 956 dinfo = device_get_ivars(dev); 957 return (dinfo->sdi_compat); 958 } 959 960 static const char * 961 sbus_get_model(device_t bus, device_t dev) 962 { 963 struct sbus_devinfo *dinfo; 964 965 dinfo = device_get_ivars(dev); 966 return (dinfo->sdi_model); 967 } 968 969 static const char * 970 sbus_get_name(device_t bus, device_t dev) 971 { 972 struct sbus_devinfo *dinfo; 973 974 dinfo = device_get_ivars(dev); 975 return (dinfo->sdi_name); 976 } 977 978 static phandle_t 979 sbus_get_node(device_t bus, device_t dev) 980 { 981 struct sbus_devinfo *dinfo; 982 983 dinfo = device_get_ivars(dev); 984 return (dinfo->sdi_node); 985 } 986 987 static const char * 988 sbus_get_type(device_t bus, device_t dev) 989 { 990 struct sbus_devinfo *dinfo; 991 992 dinfo = device_get_ivars(dev); 993 return (dinfo->sdi_type); 994 }
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