1 /* $NetBSD: ebus.c,v 1.16 2000/07/12 21:07:36 pk Exp $ */ 2 3 /* 4 * Copyright (c) 1999, 2000 Matthew R. Green 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 23 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 25 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 #include "opt_ddb.h" 32 33 /* 34 * UltraSPARC 5 and beyond ebus support. 35 * 36 * note that this driver is far from complete: 37 * - ebus2 dma code is completely unwritten 38 * - interrupt establish code is completely unwritten 39 * - bus map code is written and appears to work 40 */ 41 42 #undef DEBUG 43 #define DEBUG 44 45 #ifdef DEBUG 46 #define EDB_PROM 0x01 47 #define EDB_CHILD 0x02 48 #define EDB_INTRMAP 0x04 49 #define EDB_BUSMAP 0x08 50 #define EDB_BUSDMA 0x10 51 #define EDB_INTR 0x20 52 int ebus_debug = 0; 53 #define DPRINTF(l, s) do { if (ebus_debug & l) printf s; } while (0) 54 #else 55 #define DPRINTF(l, s) 56 #endif 57 58 #include <sys/param.h> 59 #include <sys/conf.h> 60 #include <sys/device.h> 61 #include <sys/errno.h> 62 #include <sys/extent.h> 63 #include <sys/malloc.h> 64 #include <sys/systm.h> 65 #include <sys/time.h> 66 67 #define _SPARC_BUS_DMA_PRIVATE 68 #include <machine/bus.h> 69 #include <machine/autoconf.h> 70 71 #include <dev/pci/pcivar.h> 72 #include <dev/pci/pcireg.h> 73 #include <dev/pci/pcidevs.h> 74 75 #include <sparc64/dev/iommureg.h> 76 #include <sparc64/dev/iommuvar.h> 77 #include <sparc64/dev/psychoreg.h> 78 #include <sparc64/dev/psychovar.h> 79 #include <sparc64/dev/ebusreg.h> 80 #include <sparc64/dev/ebusvar.h> 81 #include <sparc64/sparc64/cache.h> 82 83 int ebus_match __P((struct device *, struct cfdata *, void *)); 84 void ebus_attach __P((struct device *, struct device *, void *)); 85 86 struct cfattach ebus_ca = { 87 sizeof(struct ebus_softc), ebus_match, ebus_attach 88 }; 89 90 int ebus_setup_attach_args __P((struct ebus_softc *, int, 91 struct ebus_attach_args *)); 92 void ebus_destroy_attach_args __P((struct ebus_attach_args *)); 93 int ebus_print __P((void *, const char *)); 94 void ebus_find_ino __P((struct ebus_softc *, struct ebus_attach_args *)); 95 int ebus_find_node __P((struct pci_attach_args *)); 96 97 /* 98 * here are our bus space and bus dma routines. 99 */ 100 static int ebus_bus_mmap __P((bus_space_tag_t, bus_type_t, bus_addr_t, 101 int, bus_space_handle_t *)); 102 static int _ebus_bus_map __P((bus_space_tag_t, bus_type_t, bus_addr_t, 103 bus_size_t, int, vaddr_t, 104 bus_space_handle_t *)); 105 static void *ebus_intr_establish __P((bus_space_tag_t, int, int, int, 106 int (*) __P((void *)), void *)); 107 108 static int ebus_dmamap_load __P((bus_dma_tag_t, bus_dmamap_t, void *, 109 bus_size_t, struct proc *, int)); 110 static void ebus_dmamap_unload __P((bus_dma_tag_t, bus_dmamap_t)); 111 static void ebus_dmamap_sync __P((bus_dma_tag_t, bus_dmamap_t, bus_addr_t, 112 bus_size_t, int)); 113 int ebus_dmamem_alloc __P((bus_dma_tag_t, bus_size_t, bus_size_t, bus_size_t, 114 bus_dma_segment_t *, int, int *, int)); 115 void ebus_dmamem_free __P((bus_dma_tag_t, bus_dma_segment_t *, int)); 116 int ebus_dmamem_map __P((bus_dma_tag_t, bus_dma_segment_t *, int, size_t, 117 caddr_t *, int)); 118 void ebus_dmamem_unmap __P((bus_dma_tag_t, caddr_t, size_t)); 119 120 int 121 ebus_match(parent, match, aux) 122 struct device *parent; 123 struct cfdata *match; 124 void *aux; 125 { 126 struct pci_attach_args *pa = aux; 127 128 if (PCI_CLASS(pa->pa_class) == PCI_CLASS_BRIDGE && 129 PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SUN && 130 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SUN_EBUS && 131 ebus_find_node(pa)) 132 return (1); 133 134 return (0); 135 } 136 137 /* 138 * attach an ebus and all it's children. this code is modeled 139 * after the sbus code which does similar things. 140 */ 141 void 142 ebus_attach(parent, self, aux) 143 struct device *parent, *self; 144 void *aux; 145 { 146 struct ebus_softc *sc = (struct ebus_softc *)self; 147 struct pci_attach_args *pa = aux; 148 struct ebus_attach_args eba; 149 struct ebus_interrupt_map_mask *immp; 150 int node, nmapmask, error; 151 char devinfo[256]; 152 153 printf("\n"); 154 155 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo); 156 printf("%s: %s, revision 0x%02x\n", self->dv_xname, devinfo, 157 PCI_REVISION(pa->pa_class)); 158 159 sc->sc_parent = (struct psycho_softc *)parent; 160 sc->sc_bustag = pa->pa_memt; 161 sc->sc_childbustag = ebus_alloc_bus_tag(sc, PCI_MEMORY_BUS_SPACE); 162 sc->sc_dmatag = ebus_alloc_dma_tag(sc, pa->pa_dmat); 163 164 node = ebus_find_node(pa); 165 if (node == 0) 166 panic("could not find ebus node"); 167 168 sc->sc_node = node; 169 170 /* 171 * fill in our softc with information from the prom 172 */ 173 sc->sc_intmap = NULL; 174 sc->sc_range = NULL; 175 error = getprop(node, "interrupt-map", 176 sizeof(struct ebus_interrupt_map), 177 &sc->sc_nintmap, (void **)&sc->sc_intmap); 178 switch (error) { 179 case 0: 180 immp = &sc->sc_intmapmask; 181 error = getprop(node, "interrupt-map-mask", 182 sizeof(struct ebus_interrupt_map_mask), &nmapmask, 183 (void **)&immp); 184 if (error) 185 panic("could not get ebus interrupt-map-mask"); 186 if (nmapmask != 1) 187 panic("ebus interrupt-map-mask is broken"); 188 break; 189 case ENOENT: 190 break; 191 default: 192 panic("ebus interrupt-map: error %d", error); 193 break; 194 } 195 196 error = getprop(node, "ranges", sizeof(struct ebus_ranges), 197 &sc->sc_nrange, (void **)&sc->sc_range); 198 if (error) 199 panic("ebus ranges: error %d", error); 200 201 /* 202 * now attach all our children 203 */ 204 DPRINTF(EDB_CHILD, ("ebus node %08x, searching children...\n", node)); 205 for (node = firstchild(node); node; node = nextsibling(node)) { 206 char *name = getpropstring(node, "name"); 207 208 if (ebus_setup_attach_args(sc, node, &eba) != 0) { 209 printf("ebus_attach: %s: incomplete\n", name); 210 continue; 211 } else { 212 DPRINTF(EDB_CHILD, ("- found child `%s', attaching\n", eba.ea_name)); 213 (void)config_found(self, &eba, ebus_print); 214 } 215 ebus_destroy_attach_args(&eba); 216 } 217 } 218 219 int 220 ebus_setup_attach_args(sc, node, ea) 221 struct ebus_softc *sc; 222 int node; 223 struct ebus_attach_args *ea; 224 { 225 int n, rv; 226 227 bzero(ea, sizeof(struct ebus_attach_args)); 228 rv = getprop(node, "name", 1, &n, (void **)&ea->ea_name); 229 if (rv != 0) 230 return (rv); 231 ea->ea_name[n] = '\0'; 232 233 ea->ea_node = node; 234 ea->ea_bustag = sc->sc_childbustag; 235 ea->ea_dmatag = sc->sc_dmatag; 236 237 rv = getprop(node, "reg", sizeof(struct ebus_regs), &ea->ea_nregs, 238 (void **)&ea->ea_regs); 239 if (rv) 240 return (rv); 241 242 rv = getprop(node, "address", sizeof(u_int32_t), &ea->ea_nvaddrs, 243 (void **)&ea->ea_vaddrs); 244 if (rv != ENOENT) { 245 if (rv) 246 return (rv); 247 248 if (ea->ea_nregs != ea->ea_nvaddrs) 249 printf("ebus loses: device %s: %d regs and %d addrs\n", 250 ea->ea_name, ea->ea_nregs, ea->ea_nvaddrs); 251 } else 252 ea->ea_nvaddrs = 0; 253 254 if (getprop(node, "interrupts", sizeof(u_int32_t), &ea->ea_nintrs, 255 (void **)&ea->ea_intrs)) 256 ea->ea_nintrs = 0; 257 else 258 ebus_find_ino(sc, ea); 259 260 return (0); 261 } 262 263 void 264 ebus_destroy_attach_args(ea) 265 struct ebus_attach_args *ea; 266 { 267 268 if (ea->ea_name) 269 free((void *)ea->ea_name, M_DEVBUF); 270 if (ea->ea_regs) 271 free((void *)ea->ea_regs, M_DEVBUF); 272 if (ea->ea_intrs) 273 free((void *)ea->ea_intrs, M_DEVBUF); 274 if (ea->ea_vaddrs) 275 free((void *)ea->ea_vaddrs, M_DEVBUF); 276 } 277 278 int 279 ebus_print(aux, p) 280 void *aux; 281 const char *p; 282 { 283 struct ebus_attach_args *ea = aux; 284 int i; 285 286 if (p) 287 printf("%s at %s", ea->ea_name, p); 288 for (i = 0; i < ea->ea_nregs; i++) 289 printf(" addr %x-%x", ea->ea_regs[i].lo, 290 ea->ea_regs[i].lo + ea->ea_regs[i].size - 1); 291 for (i = 0; i < ea->ea_nintrs; i++) 292 printf(" ipl %d", ea->ea_intrs[i]); 293 return (UNCONF); 294 } 295 296 /* 297 * find the INO values for each interrupt and fill them in. 298 * 299 * for each "reg" property of this device, mask it's hi and lo 300 * values with the "interrupt-map-mask"'s hi/lo values, and also 301 * mask the interrupt number with the interrupt mask. search the 302 * "interrupt-map" list for matching values of hi, lo and interrupt 303 * to give the INO for this interrupt. 304 */ 305 void 306 ebus_find_ino(sc, ea) 307 struct ebus_softc *sc; 308 struct ebus_attach_args *ea; 309 { 310 u_int32_t hi, lo, intr; 311 int i, j, k; 312 313 if (sc->sc_nintmap == 0) { 314 /* 315 * If there is no interrupt map in the ebus node, 316 * assume that the child's `interrupt' property is 317 * already in a format suitable for the parent bus. 318 */ 319 return; 320 } 321 322 DPRINTF(EDB_INTRMAP, ("ebus_find_ino: searching %d interrupts", ea->ea_nintrs)); 323 324 for (j = 0; j < ea->ea_nintrs; j++) { 325 326 intr = ea->ea_intrs[j] & sc->sc_intmapmask.intr; 327 328 DPRINTF(EDB_INTRMAP, ("; intr %x masked to %x", ea->ea_intrs[j], intr)); 329 for (i = 0; i < ea->ea_nregs; i++) { 330 hi = ea->ea_regs[i].hi & sc->sc_intmapmask.hi; 331 lo = ea->ea_regs[i].lo & sc->sc_intmapmask.lo; 332 333 DPRINTF(EDB_INTRMAP, ("; reg hi.lo %08x.08x masked to %08x.%08x", ea->ea_regs[i].hi, ea->ea_regs[i].lo, hi, lo)); 334 for (k = 0; k < sc->sc_nintmap; k++) { 335 DPRINTF(EDB_INTRMAP, ("; checking hi.lo %08x.%08x intr %x", sc->sc_intmap[k].hi, sc->sc_intmap[k].lo, sc->sc_intmap[k].intr)); 336 if (hi == sc->sc_intmap[k].hi && 337 lo == sc->sc_intmap[k].lo && 338 intr == sc->sc_intmap[k].intr) { 339 ea->ea_intrs[j] = 340 sc->sc_intmap[k].cintr|INTMAP_OBIO; 341 DPRINTF(EDB_INTRMAP, ("; FOUND IT! changing to %d\n", sc->sc_intmap[k].cintr)); 342 goto next_intr; 343 } 344 } 345 } 346 next_intr: 347 } 348 } 349 350 /* 351 * what is our OFW node? this depends on our pci chipset tag 352 * having it's "node" value set to the OFW node of the PCI bus, 353 * see the simba driver. 354 */ 355 int 356 ebus_find_node(pa) 357 struct pci_attach_args *pa; 358 { 359 int node = pa->pa_pc->node; 360 int n, *ap; 361 int pcibus, bus, dev, fn; 362 363 DPRINTF(EDB_PROM, ("ebus_find_node: looking at pci node %08x\n", node)); 364 for (node = firstchild(node); node; node = nextsibling(node)) { 365 char *name = getpropstring(node, "name"); 366 367 DPRINTF(EDB_PROM, ("ebus_find_node: looking at PCI device `%s', node = %08x\n", name, node)); 368 /* must be "ebus" */ 369 if (strcmp(name, "ebus") != 0) 370 continue; 371 372 /* pull the PCI bus out of the pa_tag */ 373 pcibus = (pa->pa_tag >> 16) & 0xff; 374 DPRINTF(EDB_PROM, ("; pcibus %d dev %d fn %d\n", pcibus, pa->pa_device, pa->pa_function)); 375 376 /* get the PCI bus/device/function for this node */ 377 ap = NULL; 378 if (getprop(node, "reg", sizeof(int), &n, 379 (void **)&ap)) 380 continue; 381 382 bus = (ap[0] >> 16) & 0xff; 383 dev = (ap[0] >> 11) & 0x1f; 384 fn = (ap[0] >> 8) & 0x7; 385 386 DPRINTF(EDB_PROM, ("; looking for bus %d dev %d fn %d\n", pcibus, pa->pa_device, pa->pa_function)); 387 if (pa->pa_device != dev || 388 pa->pa_function != fn || 389 pcibus != bus) 390 continue; 391 392 DPRINTF(EDB_PROM, ("; found it, returning %08x\n", node)); 393 /* found it! */ 394 free(ap, M_DEVBUF); 395 return (node); 396 } 397 398 /* damn! */ 399 return (0); 400 } 401 402 /* 403 * bus space and bus dma below here 404 */ 405 bus_space_tag_t 406 ebus_alloc_bus_tag(sc, type) 407 struct ebus_softc *sc; 408 int type; 409 { 410 bus_space_tag_t bt; 411 412 bt = (bus_space_tag_t) 413 malloc(sizeof(struct sparc_bus_space_tag), M_DEVBUF, M_NOWAIT); 414 if (bt == NULL) 415 panic("could not allocate ebus bus tag"); 416 417 bzero(bt, sizeof *bt); 418 bt->cookie = sc; 419 bt->parent = sc->sc_bustag; 420 bt->type = type; 421 bt->sparc_bus_map = _ebus_bus_map; 422 bt->sparc_bus_mmap = ebus_bus_mmap; 423 bt->sparc_intr_establish = ebus_intr_establish; 424 return (bt); 425 } 426 427 /* XXX? */ 428 bus_dma_tag_t 429 ebus_alloc_dma_tag(sc, pdt) 430 struct ebus_softc *sc; 431 bus_dma_tag_t pdt; 432 { 433 bus_dma_tag_t dt; 434 435 dt = (bus_dma_tag_t) 436 malloc(sizeof(struct sparc_bus_dma_tag), M_DEVBUF, M_NOWAIT); 437 if (dt == NULL) 438 panic("could not allocate ebus dma tag"); 439 440 bzero(dt, sizeof *dt); 441 dt->_cookie = sc; 442 dt->_parent = pdt; 443 #define PCOPY(x) dt->x = pdt->x 444 PCOPY(_dmamap_create); 445 PCOPY(_dmamap_destroy); 446 dt->_dmamap_load = ebus_dmamap_load; 447 PCOPY(_dmamap_load_mbuf); 448 PCOPY(_dmamap_load_uio); 449 PCOPY(_dmamap_load_raw); 450 dt->_dmamap_unload = ebus_dmamap_unload; 451 dt->_dmamap_sync = ebus_dmamap_sync; 452 dt->_dmamem_alloc = ebus_dmamem_alloc; 453 dt->_dmamem_free = ebus_dmamem_free; 454 dt->_dmamem_map = ebus_dmamem_map; 455 dt->_dmamem_unmap = ebus_dmamem_unmap; 456 PCOPY(_dmamem_mmap); 457 #undef PCOPY 458 return (dt); 459 } 460 461 /* 462 * bus space support. <sparc64/dev/psychoreg.h> has a discussion 463 * about PCI physical addresses, which also applies to ebus. 464 */ 465 static int 466 _ebus_bus_map(t, btype, offset, size, flags, vaddr, hp) 467 bus_space_tag_t t; 468 bus_type_t btype; 469 bus_addr_t offset; 470 bus_size_t size; 471 int flags; 472 vaddr_t vaddr; 473 bus_space_handle_t *hp; 474 { 475 struct ebus_softc *sc = t->cookie; 476 bus_addr_t hi, lo; 477 int i; 478 479 DPRINTF(EDB_BUSMAP, ("\n_ebus_bus_map: type %d off %016llx sz %x flags %d va %p", (int)t->type, (u_int64_t)offset, (int)size, (int)flags, vaddr)); 480 481 hi = offset >> 32UL; 482 lo = offset & 0xffffffff; 483 DPRINTF(EDB_BUSMAP, (" (hi %08x lo %08x)", (u_int)hi, (u_int)lo)); 484 for (i = 0; i < sc->sc_nrange; i++) { 485 bus_addr_t pciaddr; 486 487 if (hi != sc->sc_range[i].child_hi) 488 continue; 489 if (lo < sc->sc_range[i].child_lo || 490 (lo + size) > (sc->sc_range[i].child_lo + sc->sc_range[i].size)) 491 continue; 492 493 pciaddr = ((bus_addr_t)sc->sc_range[i].phys_mid << 32UL) | 494 sc->sc_range[i].phys_lo; 495 pciaddr += lo; 496 DPRINTF(EDB_BUSMAP, ("\n_ebus_bus_map: mapping paddr offset %qx pciaddr %qx\n", 497 offset, pciaddr)); 498 /* pass it onto the psycho */ 499 return (bus_space_map2(sc->sc_bustag, t->type, pciaddr, 500 size, flags, vaddr, hp)); 501 } 502 DPRINTF(EDB_BUSMAP, (": FAILED\n")); 503 return (EINVAL); 504 } 505 506 static int 507 ebus_bus_mmap(t, btype, paddr, flags, hp) 508 bus_space_tag_t t; 509 bus_type_t btype; 510 bus_addr_t paddr; 511 int flags; 512 bus_space_handle_t *hp; 513 { 514 bus_addr_t offset = paddr; 515 struct ebus_softc *sc = t->cookie; 516 int i; 517 518 for (i = 0; i < sc->sc_nrange; i++) { 519 bus_addr_t paddr = ((bus_addr_t)sc->sc_range[i].child_hi << 32) | 520 sc->sc_range[i].child_lo; 521 522 if (offset != paddr) 523 continue; 524 525 DPRINTF(EDB_BUSMAP, ("\n_ebus_bus_mmap: mapping paddr %qx\n", paddr)); 526 return (bus_space_mmap(sc->sc_bustag, 0, paddr, 527 flags, hp)); 528 } 529 530 return (-1); 531 } 532 533 /* 534 * install an interrupt handler for a PCI device 535 */ 536 void * 537 ebus_intr_establish(t, pri, level, flags, handler, arg) 538 bus_space_tag_t t; 539 int pri; 540 int level; 541 int flags; 542 int (*handler) __P((void *)); 543 void *arg; 544 { 545 return (bus_intr_establish(t->parent, pri, level, flags, handler, arg)); 546 } 547 548 /* 549 * bus dma support 550 */ 551 int 552 ebus_dmamap_load(t, map, buf, buflen, p, flags) 553 bus_dma_tag_t t; 554 bus_dmamap_t map; 555 void *buf; 556 bus_size_t buflen; 557 struct proc *p; 558 int flags; 559 { 560 struct ebus_softc *sc = t->_cookie; 561 562 return (iommu_dvmamap_load(t, &sc->sc_parent->sc_is, map, buf, buflen, 563 p, flags)); 564 } 565 566 void 567 ebus_dmamap_unload(t, map) 568 bus_dma_tag_t t; 569 bus_dmamap_t map; 570 { 571 struct ebus_softc *sc = t->_cookie; 572 573 iommu_dvmamap_unload(t, &sc->sc_parent->sc_is, map); 574 } 575 576 void 577 ebus_dmamap_sync(t, map, offset, len, ops) 578 bus_dma_tag_t t; 579 bus_dmamap_t map; 580 bus_addr_t offset; 581 bus_size_t len; 582 int ops; 583 { 584 struct ebus_softc *sc = t->_cookie; 585 586 iommu_dvmamap_sync(t, &sc->sc_parent->sc_is, map, offset, len, ops); 587 bus_dmamap_sync(t->_parent, map, offset, len, ops); 588 } 589 590 int 591 ebus_dmamem_alloc(t, size, alignment, boundary, segs, nsegs, rsegs, flags) 592 bus_dma_tag_t t; 593 bus_size_t size; 594 bus_size_t alignment; 595 bus_size_t boundary; 596 bus_dma_segment_t *segs; 597 int nsegs; 598 int *rsegs; 599 int flags; 600 { 601 struct ebus_softc *sc = t->_cookie; 602 603 return (iommu_dvmamem_alloc(t, &sc->sc_parent->sc_is, size, alignment, 604 boundary, segs, nsegs, rsegs, flags)); 605 } 606 607 void 608 ebus_dmamem_free(t, segs, nsegs) 609 bus_dma_tag_t t; 610 bus_dma_segment_t *segs; 611 int nsegs; 612 { 613 struct ebus_softc *sc = t->_cookie; 614 615 iommu_dvmamem_free(t, &sc->sc_parent->sc_is, segs, nsegs); 616 } 617 618 int 619 ebus_dmamem_map(t, segs, nsegs, size, kvap, flags) 620 bus_dma_tag_t t; 621 bus_dma_segment_t *segs; 622 int nsegs; 623 size_t size; 624 caddr_t *kvap; 625 int flags; 626 { 627 struct ebus_softc *sc = t->_cookie; 628 629 return (iommu_dvmamem_map(t, &sc->sc_parent->sc_is, segs, nsegs, 630 size, kvap, flags)); 631 } 632 633 void 634 ebus_dmamem_unmap(t, kva, size) 635 bus_dma_tag_t t; 636 caddr_t kva; 637 size_t size; 638 { 639 struct ebus_softc *sc = t->_cookie; 640 641 iommu_dvmamem_unmap(t, &sc->sc_parent->sc_is, kva, size); 642 } 643