1 /* $NetBSD: ebus.c,v 1.22 2001/06/04 20:56:52 mrg 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 not complete: 37 * - ebus2 dma code is completely unwritten 38 * - interrupt establish is written and appears to work 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", 213 eba.ea_name)); 214 (void)config_found(self, &eba, ebus_print); 215 } 216 ebus_destroy_attach_args(&eba); 217 } 218 } 219 220 int 221 ebus_setup_attach_args(sc, node, ea) 222 struct ebus_softc *sc; 223 int node; 224 struct ebus_attach_args *ea; 225 { 226 int n, rv; 227 228 bzero(ea, sizeof(struct ebus_attach_args)); 229 rv = getprop(node, "name", 1, &n, (void **)&ea->ea_name); 230 if (rv != 0) 231 return (rv); 232 ea->ea_name[n] = '\0'; 233 234 ea->ea_node = node; 235 ea->ea_bustag = sc->sc_childbustag; 236 ea->ea_dmatag = sc->sc_dmatag; 237 238 rv = getprop(node, "reg", sizeof(struct ebus_regs), &ea->ea_nregs, 239 (void **)&ea->ea_regs); 240 if (rv) 241 return (rv); 242 243 rv = getprop(node, "address", sizeof(u_int32_t), &ea->ea_nvaddrs, 244 (void **)&ea->ea_vaddrs); 245 if (rv != ENOENT) { 246 if (rv) 247 return (rv); 248 249 if (ea->ea_nregs != ea->ea_nvaddrs) 250 printf("ebus loses: device %s: %d regs and %d addrs\n", 251 ea->ea_name, ea->ea_nregs, ea->ea_nvaddrs); 252 } else 253 ea->ea_nvaddrs = 0; 254 255 if (getprop(node, "interrupts", sizeof(u_int32_t), &ea->ea_nintrs, 256 (void **)&ea->ea_intrs)) 257 ea->ea_nintrs = 0; 258 else 259 ebus_find_ino(sc, ea); 260 261 return (0); 262 } 263 264 void 265 ebus_destroy_attach_args(ea) 266 struct ebus_attach_args *ea; 267 { 268 269 if (ea->ea_name) 270 free((void *)ea->ea_name, M_DEVBUF); 271 if (ea->ea_regs) 272 free((void *)ea->ea_regs, M_DEVBUF); 273 if (ea->ea_intrs) 274 free((void *)ea->ea_intrs, M_DEVBUF); 275 if (ea->ea_vaddrs) 276 free((void *)ea->ea_vaddrs, M_DEVBUF); 277 } 278 279 int 280 ebus_print(aux, p) 281 void *aux; 282 const char *p; 283 { 284 struct ebus_attach_args *ea = aux; 285 int i; 286 287 if (p) 288 printf("%s at %s", ea->ea_name, p); 289 for (i = 0; i < ea->ea_nregs; i++) 290 printf("%s %x-%x", i == 0 ? " addr" : ",", 291 ea->ea_regs[i].lo, 292 ea->ea_regs[i].lo + ea->ea_regs[i].size - 1); 293 for (i = 0; i < ea->ea_nintrs; i++) 294 printf(" ipl %d", ea->ea_intrs[i]); 295 return (UNCONF); 296 } 297 298 /* 299 * find the INO values for each interrupt and fill them in. 300 * 301 * for each "reg" property of this device, mask it's hi and lo 302 * values with the "interrupt-map-mask"'s hi/lo values, and also 303 * mask the interrupt number with the interrupt mask. search the 304 * "interrupt-map" list for matching values of hi, lo and interrupt 305 * to give the INO for this interrupt. 306 */ 307 void 308 ebus_find_ino(sc, ea) 309 struct ebus_softc *sc; 310 struct ebus_attach_args *ea; 311 { 312 u_int32_t hi, lo, intr; 313 int i, j, k; 314 315 if (sc->sc_nintmap == 0) { 316 /* 317 * If there is no interrupt map in the ebus node, 318 * assume that the child's `interrupt' property is 319 * already in a format suitable for the parent bus. 320 */ 321 return; 322 } 323 324 DPRINTF(EDB_INTRMAP, 325 ("ebus_find_ino: searching %d interrupts", ea->ea_nintrs)); 326 327 for (j = 0; j < ea->ea_nintrs; j++) { 328 329 intr = ea->ea_intrs[j] & sc->sc_intmapmask.intr; 330 331 DPRINTF(EDB_INTRMAP, 332 ("; intr %x masked to %x", ea->ea_intrs[j], intr)); 333 for (i = 0; i < ea->ea_nregs; i++) { 334 hi = ea->ea_regs[i].hi & sc->sc_intmapmask.hi; 335 lo = ea->ea_regs[i].lo & sc->sc_intmapmask.lo; 336 337 DPRINTF(EDB_INTRMAP, 338 ("; reg hi.lo %08x.%08x masked to %08x.%08x", 339 ea->ea_regs[i].hi, ea->ea_regs[i].lo, hi, lo)); 340 for (k = 0; k < sc->sc_nintmap; k++) { 341 DPRINTF(EDB_INTRMAP, 342 ("; checking hi.lo %08x.%08x intr %x", 343 sc->sc_intmap[k].hi, sc->sc_intmap[k].lo, 344 sc->sc_intmap[k].intr)); 345 if (hi == sc->sc_intmap[k].hi && 346 lo == sc->sc_intmap[k].lo && 347 intr == sc->sc_intmap[k].intr) { 348 ea->ea_intrs[j] = 349 sc->sc_intmap[k].cintr; 350 DPRINTF(EDB_INTRMAP, 351 ("; FOUND IT! changing to %d\n", 352 sc->sc_intmap[k].cintr)); 353 goto next_intr; 354 } 355 } 356 } 357 next_intr:; 358 } 359 } 360 361 /* 362 * what is our OFW node? this depends on our pci chipset tag 363 * having it's "node" value set to the OFW node of the PCI bus, 364 * see the simba driver. 365 */ 366 int 367 ebus_find_node(pa) 368 struct pci_attach_args *pa; 369 { 370 int node = pa->pa_pc->node; 371 int n, *ap; 372 int pcibus, bus, dev, fn; 373 374 DPRINTF(EDB_PROM, ("ebus_find_node: looking at pci node %08x\n", node)); 375 376 /* pull the PCI bus out of the pa_tag */ 377 pcibus = (pa->pa_tag >> 16) & 0xff; 378 DPRINTF(EDB_PROM, ("; pcibus %d dev %d fn %d\n", pcibus, pa->pa_device, 379 pa->pa_function)); 380 381 for (node = firstchild(node); node; node = nextsibling(node)) { 382 char *name = getpropstring(node, "name"); 383 384 DPRINTF(EDB_PROM, 385 ("ebus_find_node: looking at PCI device `%s', node = %08x\n", 386 name, node)); 387 388 DPRINTF(EDB_PROM, 389 ("; looking at PCI device `%s', node = %08x\n", 390 name, node)); 391 /* must be "ebus" */ 392 if (strcmp(name, "ebus") != 0) 393 continue; 394 395 /* pull the PCI bus out of the pa_tag */ 396 pcibus = (pa->pa_tag >> 16) & 0xff; 397 DPRINTF(EDB_PROM, ("; pcibus %d dev %d fn %d\n", pcibus, 398 pa->pa_device, pa->pa_function)); 399 400 /* get the PCI bus/device/function for this node */ 401 ap = NULL; 402 if (getprop(node, "reg", sizeof(int), &n, 403 (void **)&ap)) 404 continue; 405 406 bus = (ap[0] >> 16) & 0xff; 407 dev = (ap[0] >> 11) & 0x1f; 408 fn = (ap[0] >> 8) & 0x7; 409 free(ap, M_DEVBUF); 410 411 DPRINTF(EDB_PROM, 412 ("; looking at ebus node: bus %d dev %d fn %d\n", 413 bus, dev, fn)); 414 if (pa->pa_device != dev || 415 pa->pa_function != fn || 416 pcibus != bus) 417 continue; 418 419 DPRINTF(EDB_PROM, ("; found it, returning %08x\n", node)); 420 /* found it! */ 421 return (node); 422 } 423 424 /* damn! */ 425 return (0); 426 } 427 428 /* 429 * bus space and bus dma below here 430 */ 431 bus_space_tag_t 432 ebus_alloc_bus_tag(sc, type) 433 struct ebus_softc *sc; 434 int type; 435 { 436 bus_space_tag_t bt; 437 438 bt = (bus_space_tag_t) 439 malloc(sizeof(struct sparc_bus_space_tag), M_DEVBUF, M_NOWAIT); 440 if (bt == NULL) 441 panic("could not allocate ebus bus tag"); 442 443 bzero(bt, sizeof *bt); 444 bt->cookie = sc; 445 bt->parent = sc->sc_bustag; 446 bt->type = type; 447 bt->sparc_bus_map = _ebus_bus_map; 448 bt->sparc_bus_mmap = ebus_bus_mmap; 449 bt->sparc_intr_establish = ebus_intr_establish; 450 return (bt); 451 } 452 453 /* XXX? */ 454 bus_dma_tag_t 455 ebus_alloc_dma_tag(sc, pdt) 456 struct ebus_softc *sc; 457 bus_dma_tag_t pdt; 458 { 459 bus_dma_tag_t dt; 460 461 dt = (bus_dma_tag_t) 462 malloc(sizeof(struct sparc_bus_dma_tag), M_DEVBUF, M_NOWAIT); 463 if (dt == NULL) 464 panic("could not allocate ebus dma tag"); 465 466 bzero(dt, sizeof *dt); 467 dt->_cookie = sc; 468 dt->_parent = pdt; 469 #define PCOPY(x) dt->x = pdt->x 470 PCOPY(_dmamap_create); 471 PCOPY(_dmamap_destroy); 472 dt->_dmamap_load = ebus_dmamap_load; 473 PCOPY(_dmamap_load_mbuf); 474 PCOPY(_dmamap_load_uio); 475 PCOPY(_dmamap_load_raw); 476 dt->_dmamap_unload = ebus_dmamap_unload; 477 dt->_dmamap_sync = ebus_dmamap_sync; 478 dt->_dmamem_alloc = ebus_dmamem_alloc; 479 dt->_dmamem_free = ebus_dmamem_free; 480 dt->_dmamem_map = ebus_dmamem_map; 481 dt->_dmamem_unmap = ebus_dmamem_unmap; 482 PCOPY(_dmamem_mmap); 483 #undef PCOPY 484 return (dt); 485 } 486 487 /* 488 * bus space support. <sparc64/dev/psychoreg.h> has a discussion 489 * about PCI physical addresses, which also applies to ebus. 490 */ 491 static int 492 _ebus_bus_map(t, btype, offset, size, flags, vaddr, hp) 493 bus_space_tag_t t; 494 bus_type_t btype; 495 bus_addr_t offset; 496 bus_size_t size; 497 int flags; 498 vaddr_t vaddr; 499 bus_space_handle_t *hp; 500 { 501 struct ebus_softc *sc = t->cookie; 502 bus_addr_t hi, lo; 503 int i; 504 505 DPRINTF(EDB_BUSMAP, 506 ("\n_ebus_bus_map: type %d off %016llx sz %x flags %d va %p", 507 (int)t->type, (unsigned long long)offset, (int)size, (int)flags, 508 (void *)vaddr)); 509 510 hi = offset >> 32UL; 511 lo = offset & 0xffffffff; 512 DPRINTF(EDB_BUSMAP, (" (hi %08x lo %08x)", (u_int)hi, (u_int)lo)); 513 for (i = 0; i < sc->sc_nrange; i++) { 514 bus_addr_t pciaddr; 515 516 if (hi != sc->sc_range[i].child_hi) 517 continue; 518 if (lo < sc->sc_range[i].child_lo || 519 (lo + size) > 520 (sc->sc_range[i].child_lo + sc->sc_range[i].size)) 521 continue; 522 523 pciaddr = ((bus_addr_t)sc->sc_range[i].phys_mid << 32UL) | 524 sc->sc_range[i].phys_lo; 525 pciaddr += lo; 526 DPRINTF(EDB_BUSMAP, 527 ("\n_ebus_bus_map: mapping paddr offset %qx pciaddr %qx\n", 528 (unsigned long long)offset, (unsigned long long)pciaddr)); 529 /* pass it onto the psycho */ 530 return (bus_space_map2(sc->sc_bustag, t->type, pciaddr, 531 size, flags, vaddr, hp)); 532 } 533 DPRINTF(EDB_BUSMAP, (": FAILED\n")); 534 return (EINVAL); 535 } 536 537 static int 538 ebus_bus_mmap(t, btype, paddr, flags, hp) 539 bus_space_tag_t t; 540 bus_type_t btype; 541 bus_addr_t paddr; 542 int flags; 543 bus_space_handle_t *hp; 544 { 545 bus_addr_t offset = paddr; 546 struct ebus_softc *sc = t->cookie; 547 int i; 548 549 for (i = 0; i < sc->sc_nrange; i++) { 550 bus_addr_t paddr = ((bus_addr_t)sc->sc_range[i].child_hi << 32) | 551 sc->sc_range[i].child_lo; 552 553 if (offset != paddr) 554 continue; 555 556 DPRINTF(EDB_BUSMAP, ("\n_ebus_bus_mmap: mapping paddr %qx\n", 557 (unsigned long long)paddr)); 558 return (bus_space_mmap(sc->sc_bustag, 0, paddr, 559 flags, hp)); 560 } 561 562 return (-1); 563 } 564 565 /* 566 * install an interrupt handler for a PCI device 567 */ 568 void * 569 ebus_intr_establish(t, pri, level, flags, handler, arg) 570 bus_space_tag_t t; 571 int pri; 572 int level; 573 int flags; 574 int (*handler) __P((void *)); 575 void *arg; 576 { 577 return (bus_intr_establish(t->parent, pri, level, flags, handler, arg)); 578 } 579 580 /* 581 * bus dma support 582 */ 583 int 584 ebus_dmamap_load(t, map, buf, buflen, p, flags) 585 bus_dma_tag_t t; 586 bus_dmamap_t map; 587 void *buf; 588 bus_size_t buflen; 589 struct proc *p; 590 int flags; 591 { 592 struct ebus_softc *sc = t->_cookie; 593 594 return (iommu_dvmamap_load(t, sc->sc_parent->sc_is, map, buf, buflen, 595 p, flags)); 596 } 597 598 void 599 ebus_dmamap_unload(t, map) 600 bus_dma_tag_t t; 601 bus_dmamap_t map; 602 { 603 struct ebus_softc *sc = t->_cookie; 604 605 iommu_dvmamap_unload(t, sc->sc_parent->sc_is, map); 606 } 607 608 void 609 ebus_dmamap_sync(t, map, offset, len, ops) 610 bus_dma_tag_t t; 611 bus_dmamap_t map; 612 bus_addr_t offset; 613 bus_size_t len; 614 int ops; 615 { 616 struct ebus_softc *sc = t->_cookie; 617 618 iommu_dvmamap_sync(t, sc->sc_parent->sc_is, map, offset, len, ops); 619 bus_dmamap_sync(t->_parent, map, offset, len, ops); 620 } 621 622 int 623 ebus_dmamem_alloc(t, size, alignment, boundary, segs, nsegs, rsegs, flags) 624 bus_dma_tag_t t; 625 bus_size_t size; 626 bus_size_t alignment; 627 bus_size_t boundary; 628 bus_dma_segment_t *segs; 629 int nsegs; 630 int *rsegs; 631 int flags; 632 { 633 struct ebus_softc *sc = t->_cookie; 634 635 return (iommu_dvmamem_alloc(t, sc->sc_parent->sc_is, size, alignment, 636 boundary, segs, nsegs, rsegs, flags)); 637 } 638 639 void 640 ebus_dmamem_free(t, segs, nsegs) 641 bus_dma_tag_t t; 642 bus_dma_segment_t *segs; 643 int nsegs; 644 { 645 struct ebus_softc *sc = t->_cookie; 646 647 iommu_dvmamem_free(t, sc->sc_parent->sc_is, segs, nsegs); 648 } 649 650 int 651 ebus_dmamem_map(t, segs, nsegs, size, kvap, flags) 652 bus_dma_tag_t t; 653 bus_dma_segment_t *segs; 654 int nsegs; 655 size_t size; 656 caddr_t *kvap; 657 int flags; 658 { 659 struct ebus_softc *sc = t->_cookie; 660 661 return (iommu_dvmamem_map(t, sc->sc_parent->sc_is, segs, nsegs, 662 size, kvap, flags)); 663 } 664 665 void 666 ebus_dmamem_unmap(t, kva, size) 667 bus_dma_tag_t t; 668 caddr_t kva; 669 size_t size; 670 { 671 struct ebus_softc *sc = t->_cookie; 672 673 iommu_dvmamem_unmap(t, sc->sc_parent->sc_is, kva, size); 674 } 675