ebus.c revision 1.27
1 /* $NetBSD: ebus.c,v 1.27 2001/09/24 23:49:32 eeh 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 = 0x0; 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 #include <machine/openfirm.h> 71 72 #include <dev/pci/pcivar.h> 73 #include <dev/pci/pcireg.h> 74 #include <dev/pci/pcidevs.h> 75 76 #include <sparc64/dev/iommureg.h> 77 #include <sparc64/dev/iommuvar.h> 78 #include <sparc64/dev/psychoreg.h> 79 #include <sparc64/dev/psychovar.h> 80 #include <sparc64/dev/ebusreg.h> 81 #include <sparc64/dev/ebusvar.h> 82 #include <sparc64/sparc64/cache.h> 83 84 int ebus_match __P((struct device *, struct cfdata *, void *)); 85 void ebus_attach __P((struct device *, struct device *, void *)); 86 87 struct cfattach ebus_ca = { 88 sizeof(struct ebus_softc), ebus_match, ebus_attach 89 }; 90 91 int ebus_setup_attach_args __P((struct ebus_softc *, int, 92 struct ebus_attach_args *)); 93 void ebus_destroy_attach_args __P((struct ebus_attach_args *)); 94 int ebus_print __P((void *, const char *)); 95 void ebus_find_ino __P((struct ebus_softc *, struct ebus_attach_args *)); 96 int ebus_find_node __P((struct pci_attach_args *)); 97 98 /* 99 * here are our bus space and bus dma routines. 100 */ 101 static paddr_t ebus_bus_mmap __P((bus_space_tag_t, bus_addr_t, off_t, int, int)); 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 char name[10]; 128 int node; 129 130 /* Only attach if there's a PROM node. */ 131 node = PCITAG_NODE(pa->pa_tag); 132 if (node == -1) return (0); 133 134 /* Match a real ebus */ 135 OF_getprop(node, "name", &name, sizeof(name)); 136 if (PCI_CLASS(pa->pa_class) == PCI_CLASS_BRIDGE && 137 PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SUN && 138 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SUN_EBUS && 139 strcmp(name, "ebus") == 0) 140 return (1); 141 142 /* Or a real ebus III */ 143 if (PCI_CLASS(pa->pa_class) == PCI_CLASS_BRIDGE && 144 PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SUN && 145 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SUN_EBUSIII && 146 strcmp(name, "ebus") == 0) 147 return (1); 148 149 /* Or a PCI-ISA bridge XXX I hope this is on-board. */ 150 if (PCI_CLASS(pa->pa_class) == PCI_CLASS_BRIDGE && 151 PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_BRIDGE_ISA) { 152 return (1); 153 } 154 155 return (0); 156 } 157 158 /* 159 * attach an ebus and all it's children. this code is modeled 160 * after the sbus code which does similar things. 161 */ 162 void 163 ebus_attach(parent, self, aux) 164 struct device *parent, *self; 165 void *aux; 166 { 167 struct ebus_softc *sc = (struct ebus_softc *)self; 168 struct pci_attach_args *pa = aux; 169 struct ebus_attach_args eba; 170 struct ebus_interrupt_map_mask *immp; 171 int node, nmapmask, error; 172 char devinfo[256]; 173 174 printf("\n"); 175 176 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo); 177 printf("%s: %s, revision 0x%02x\n", self->dv_xname, devinfo, 178 PCI_REVISION(pa->pa_class)); 179 180 sc->sc_parent = (struct psycho_softc *)parent; 181 sc->sc_memtag = pa->pa_memt; 182 sc->sc_iotag = pa->pa_iot; 183 sc->sc_childbustag = ebus_alloc_bus_tag(sc, PCI_MEMORY_BUS_SPACE); 184 sc->sc_dmatag = ebus_alloc_dma_tag(sc, pa->pa_dmat); 185 186 node = PCITAG_NODE(pa->pa_tag); 187 if (node == -1) 188 panic("could not find ebus node"); 189 190 sc->sc_node = node; 191 192 /* 193 * fill in our softc with information from the prom 194 */ 195 sc->sc_intmap = NULL; 196 sc->sc_range = NULL; 197 error = getprop(node, "interrupt-map", 198 sizeof(struct ebus_interrupt_map), 199 &sc->sc_nintmap, (void **)&sc->sc_intmap); 200 switch (error) { 201 case 0: 202 immp = &sc->sc_intmapmask; 203 error = getprop(node, "interrupt-map-mask", 204 sizeof(struct ebus_interrupt_map_mask), &nmapmask, 205 (void **)&immp); 206 if (error) 207 panic("could not get ebus interrupt-map-mask"); 208 if (nmapmask != 1) 209 panic("ebus interrupt-map-mask is broken"); 210 break; 211 case ENOENT: 212 break; 213 default: 214 panic("ebus interrupt-map: error %d", error); 215 break; 216 } 217 218 error = getprop(node, "ranges", sizeof(struct ebus_ranges), 219 &sc->sc_nrange, (void **)&sc->sc_range); 220 if (error) 221 panic("ebus ranges: error %d", error); 222 223 /* 224 * now attach all our children 225 */ 226 DPRINTF(EDB_CHILD, ("ebus node %08x, searching children...\n", node)); 227 for (node = firstchild(node); node; node = nextsibling(node)) { 228 char *name = getpropstring(node, "name"); 229 230 if (ebus_setup_attach_args(sc, node, &eba) != 0) { 231 printf("ebus_attach: %s: incomplete\n", name); 232 continue; 233 } else { 234 DPRINTF(EDB_CHILD, ("- found child `%s', attaching\n", 235 eba.ea_name)); 236 (void)config_found(self, &eba, ebus_print); 237 } 238 ebus_destroy_attach_args(&eba); 239 } 240 } 241 242 int 243 ebus_setup_attach_args(sc, node, ea) 244 struct ebus_softc *sc; 245 int node; 246 struct ebus_attach_args *ea; 247 { 248 int n, rv; 249 250 bzero(ea, sizeof(struct ebus_attach_args)); 251 rv = getprop(node, "name", 1, &n, (void **)&ea->ea_name); 252 if (rv != 0) 253 return (rv); 254 ea->ea_name[n] = '\0'; 255 256 ea->ea_node = node; 257 ea->ea_bustag = sc->sc_childbustag; 258 ea->ea_dmatag = sc->sc_dmatag; 259 260 rv = getprop(node, "reg", sizeof(struct ebus_regs), &ea->ea_nregs, 261 (void **)&ea->ea_regs); 262 if (rv) 263 return (rv); 264 265 rv = getprop(node, "address", sizeof(u_int32_t), &ea->ea_nvaddrs, 266 (void **)&ea->ea_vaddrs); 267 if (rv != ENOENT) { 268 if (rv) 269 return (rv); 270 271 if (ea->ea_nregs != ea->ea_nvaddrs) 272 printf("ebus loses: device %s: %d regs and %d addrs\n", 273 ea->ea_name, ea->ea_nregs, ea->ea_nvaddrs); 274 } else 275 ea->ea_nvaddrs = 0; 276 277 if (getprop(node, "interrupts", sizeof(u_int32_t), &ea->ea_nintrs, 278 (void **)&ea->ea_intrs)) 279 ea->ea_nintrs = 0; 280 else 281 ebus_find_ino(sc, ea); 282 283 return (0); 284 } 285 286 void 287 ebus_destroy_attach_args(ea) 288 struct ebus_attach_args *ea; 289 { 290 291 if (ea->ea_name) 292 free((void *)ea->ea_name, M_DEVBUF); 293 if (ea->ea_regs) 294 free((void *)ea->ea_regs, M_DEVBUF); 295 if (ea->ea_intrs) 296 free((void *)ea->ea_intrs, M_DEVBUF); 297 if (ea->ea_vaddrs) 298 free((void *)ea->ea_vaddrs, M_DEVBUF); 299 } 300 301 int 302 ebus_print(aux, p) 303 void *aux; 304 const char *p; 305 { 306 struct ebus_attach_args *ea = aux; 307 int i; 308 309 if (p) 310 printf("%s at %s", ea->ea_name, p); 311 for (i = 0; i < ea->ea_nregs; i++) 312 printf("%s %x-%x", i == 0 ? " addr" : ",", 313 ea->ea_regs[i].lo, 314 ea->ea_regs[i].lo + ea->ea_regs[i].size - 1); 315 for (i = 0; i < ea->ea_nintrs; i++) 316 printf(" ipl %d", ea->ea_intrs[i]); 317 return (UNCONF); 318 } 319 320 321 /* 322 * find the INO values for each interrupt and fill them in. 323 * 324 * for each "reg" property of this device, mask it's hi and lo 325 * values with the "interrupt-map-mask"'s hi/lo values, and also 326 * mask the interrupt number with the interrupt mask. search the 327 * "interrupt-map" list for matching values of hi, lo and interrupt 328 * to give the INO for this interrupt. 329 */ 330 void 331 ebus_find_ino(sc, ea) 332 struct ebus_softc *sc; 333 struct ebus_attach_args *ea; 334 { 335 u_int32_t hi, lo, intr; 336 int i, j, k; 337 338 if (sc->sc_nintmap == 0) { 339 for (i = 0; i < ea->ea_nintrs; i++) { 340 OF_mapintr(ea->ea_node, &ea->ea_intrs[i], 341 sizeof(ea->ea_intrs[0]), 342 sizeof(ea->ea_intrs[0])); 343 } 344 return; 345 } 346 347 DPRINTF(EDB_INTRMAP, 348 ("ebus_find_ino: searching %d interrupts", ea->ea_nintrs)); 349 350 for (j = 0; j < ea->ea_nintrs; j++) { 351 352 intr = ea->ea_intrs[j] & sc->sc_intmapmask.intr; 353 354 DPRINTF(EDB_INTRMAP, 355 ("; intr %x masked to %x", ea->ea_intrs[j], intr)); 356 for (i = 0; i < ea->ea_nregs; i++) { 357 hi = ea->ea_regs[i].hi & sc->sc_intmapmask.hi; 358 lo = ea->ea_regs[i].lo & sc->sc_intmapmask.lo; 359 360 DPRINTF(EDB_INTRMAP, 361 ("; reg hi.lo %08x.%08x masked to %08x.%08x", 362 ea->ea_regs[i].hi, ea->ea_regs[i].lo, hi, lo)); 363 for (k = 0; k < sc->sc_nintmap; k++) { 364 DPRINTF(EDB_INTRMAP, 365 ("; checking hi.lo %08x.%08x intr %x", 366 sc->sc_intmap[k].hi, sc->sc_intmap[k].lo, 367 sc->sc_intmap[k].intr)); 368 if (hi == sc->sc_intmap[k].hi && 369 lo == sc->sc_intmap[k].lo && 370 intr == sc->sc_intmap[k].intr) { 371 ea->ea_intrs[j] = 372 sc->sc_intmap[k].cintr; 373 DPRINTF(EDB_INTRMAP, 374 ("; FOUND IT! changing to %d\n", 375 sc->sc_intmap[k].cintr)); 376 goto next_intr; 377 } 378 } 379 } 380 next_intr:; 381 } 382 } 383 384 385 /* 386 * bus space and bus dma below here 387 */ 388 bus_space_tag_t 389 ebus_alloc_bus_tag(sc, type) 390 struct ebus_softc *sc; 391 int type; 392 { 393 bus_space_tag_t bt; 394 395 bt = (bus_space_tag_t) 396 malloc(sizeof(struct sparc_bus_space_tag), M_DEVBUF, M_NOWAIT); 397 if (bt == NULL) 398 panic("could not allocate ebus bus tag"); 399 400 bzero(bt, sizeof *bt); 401 bt->cookie = sc; 402 bt->parent = sc->sc_memtag; 403 bt->type = type; 404 bt->sparc_bus_map = _ebus_bus_map; 405 bt->sparc_bus_mmap = ebus_bus_mmap; 406 bt->sparc_intr_establish = ebus_intr_establish; 407 return (bt); 408 } 409 410 /* XXX? */ 411 bus_dma_tag_t 412 ebus_alloc_dma_tag(sc, pdt) 413 struct ebus_softc *sc; 414 bus_dma_tag_t pdt; 415 { 416 bus_dma_tag_t dt; 417 418 dt = (bus_dma_tag_t) 419 malloc(sizeof(struct sparc_bus_dma_tag), M_DEVBUF, M_NOWAIT); 420 if (dt == NULL) 421 panic("could not allocate ebus dma tag"); 422 423 bzero(dt, sizeof *dt); 424 dt->_cookie = sc; 425 dt->_parent = pdt; 426 #define PCOPY(x) dt->x = pdt->x 427 PCOPY(_dmamap_create); 428 PCOPY(_dmamap_destroy); 429 dt->_dmamap_load = ebus_dmamap_load; 430 PCOPY(_dmamap_load_mbuf); 431 PCOPY(_dmamap_load_uio); 432 PCOPY(_dmamap_load_raw); 433 dt->_dmamap_unload = ebus_dmamap_unload; 434 dt->_dmamap_sync = ebus_dmamap_sync; 435 dt->_dmamem_alloc = ebus_dmamem_alloc; 436 dt->_dmamem_free = ebus_dmamem_free; 437 dt->_dmamem_map = ebus_dmamem_map; 438 dt->_dmamem_unmap = ebus_dmamem_unmap; 439 PCOPY(_dmamem_mmap); 440 #undef PCOPY 441 return (dt); 442 } 443 444 /* 445 * bus space support. <sparc64/dev/psychoreg.h> has a discussion 446 * about PCI physical addresses, which also applies to ebus. 447 */ 448 static int 449 _ebus_bus_map(t, btype, offset, size, flags, vaddr, hp) 450 bus_space_tag_t t; 451 bus_type_t btype; 452 bus_addr_t offset; 453 bus_size_t size; 454 int flags; 455 vaddr_t vaddr; 456 bus_space_handle_t *hp; 457 { 458 struct ebus_softc *sc = t->cookie; 459 bus_addr_t hi, lo; 460 int i, ss; 461 462 DPRINTF(EDB_BUSMAP, 463 ("\n_ebus_bus_map: type %d off %016llx sz %x flags %d va %p", 464 (int)t->type, (unsigned long long)offset, (int)size, (int)flags, 465 (void *)vaddr)); 466 467 hi = offset >> 32UL; 468 lo = offset & 0xffffffff; 469 DPRINTF(EDB_BUSMAP, (" (hi %08x lo %08x)", (u_int)hi, (u_int)lo)); 470 for (i = 0; i < sc->sc_nrange; i++) { 471 bus_addr_t pciaddr; 472 473 if (hi != sc->sc_range[i].child_hi) 474 continue; 475 if (lo < sc->sc_range[i].child_lo || 476 (lo + size) > 477 (sc->sc_range[i].child_lo + sc->sc_range[i].size)) 478 continue; 479 480 /* Isolate address space and find the right tag */ 481 ss = (sc->sc_range[i].phys_hi>>24)&3; 482 switch (ss) { 483 case 1: /* I/O space */ 484 t = sc->sc_iotag; 485 break; 486 case 2: /* Memory space */ 487 t = sc->sc_memtag; 488 break; 489 case 0: /* Config space */ 490 case 3: /* 64-bit Memory space */ 491 default: /* WTF? */ 492 /* We don't handle these */ 493 panic("_ebus_bus_map: illegal space %x", ss); 494 break; 495 } 496 pciaddr = ((bus_addr_t)sc->sc_range[i].phys_mid << 32UL) | 497 sc->sc_range[i].phys_lo; 498 pciaddr += lo; 499 DPRINTF(EDB_BUSMAP, 500 ("\n_ebus_bus_map: mapping space %x paddr offset %qx pciaddr %qx\n", 501 ss, (unsigned long long)offset, (unsigned long long)pciaddr)); 502 /* pass it onto the psycho */ 503 return (bus_space_map2(t, sc->sc_range[i].phys_hi, 504 pciaddr, size, flags, vaddr, hp)); 505 } 506 DPRINTF(EDB_BUSMAP, (": FAILED\n")); 507 return (EINVAL); 508 } 509 510 static paddr_t 511 ebus_bus_mmap(t, paddr, off, prot, flags) 512 bus_space_tag_t t; 513 bus_addr_t paddr; 514 off_t off; 515 int prot; 516 int flags; 517 { 518 bus_addr_t offset = paddr; 519 struct ebus_softc *sc = t->cookie; 520 int i; 521 522 for (i = 0; i < sc->sc_nrange; i++) { 523 bus_addr_t paddr = ((bus_addr_t)sc->sc_range[i].child_hi << 32) | 524 sc->sc_range[i].child_lo; 525 526 if (offset != paddr) 527 continue; 528 529 DPRINTF(EDB_BUSMAP, ("\n_ebus_bus_mmap: mapping paddr %qx\n", 530 (unsigned long long)paddr)); 531 return (bus_space_mmap(sc->sc_memtag, paddr, off, 532 prot, flags)); 533 } 534 535 return (-1); 536 } 537 538 /* 539 * install an interrupt handler for a PCI device 540 */ 541 void * 542 ebus_intr_establish(t, pri, level, flags, handler, arg) 543 bus_space_tag_t t; 544 int pri; 545 int level; 546 int flags; 547 int (*handler) __P((void *)); 548 void *arg; 549 { 550 return (bus_intr_establish(t->parent, pri, level, flags, handler, arg)); 551 } 552 553 /* 554 * bus dma support 555 */ 556 int 557 ebus_dmamap_load(t, map, buf, buflen, p, flags) 558 bus_dma_tag_t t; 559 bus_dmamap_t map; 560 void *buf; 561 bus_size_t buflen; 562 struct proc *p; 563 int flags; 564 { 565 struct ebus_softc *sc = t->_cookie; 566 567 return (iommu_dvmamap_load(t, sc->sc_parent->sc_is, map, buf, buflen, 568 p, flags)); 569 } 570 571 void 572 ebus_dmamap_unload(t, map) 573 bus_dma_tag_t t; 574 bus_dmamap_t map; 575 { 576 struct ebus_softc *sc = t->_cookie; 577 578 iommu_dvmamap_unload(t, sc->sc_parent->sc_is, map); 579 } 580 581 void 582 ebus_dmamap_sync(t, map, offset, len, ops) 583 bus_dma_tag_t t; 584 bus_dmamap_t map; 585 bus_addr_t offset; 586 bus_size_t len; 587 int ops; 588 { 589 struct ebus_softc *sc = t->_cookie; 590 591 iommu_dvmamap_sync(t, sc->sc_parent->sc_is, map, offset, len, ops); 592 bus_dmamap_sync(t->_parent, map, offset, len, ops); 593 } 594 595 int 596 ebus_dmamem_alloc(t, size, alignment, boundary, segs, nsegs, rsegs, flags) 597 bus_dma_tag_t t; 598 bus_size_t size; 599 bus_size_t alignment; 600 bus_size_t boundary; 601 bus_dma_segment_t *segs; 602 int nsegs; 603 int *rsegs; 604 int flags; 605 { 606 struct ebus_softc *sc = t->_cookie; 607 608 return (iommu_dvmamem_alloc(t, sc->sc_parent->sc_is, size, alignment, 609 boundary, segs, nsegs, rsegs, flags)); 610 } 611 612 void 613 ebus_dmamem_free(t, segs, nsegs) 614 bus_dma_tag_t t; 615 bus_dma_segment_t *segs; 616 int nsegs; 617 { 618 struct ebus_softc *sc = t->_cookie; 619 620 iommu_dvmamem_free(t, sc->sc_parent->sc_is, segs, nsegs); 621 } 622 623 int 624 ebus_dmamem_map(t, segs, nsegs, size, kvap, flags) 625 bus_dma_tag_t t; 626 bus_dma_segment_t *segs; 627 int nsegs; 628 size_t size; 629 caddr_t *kvap; 630 int flags; 631 { 632 struct ebus_softc *sc = t->_cookie; 633 634 return (iommu_dvmamem_map(t, sc->sc_parent->sc_is, segs, nsegs, 635 size, kvap, flags)); 636 } 637 638 void 639 ebus_dmamem_unmap(t, kva, size) 640 bus_dma_tag_t t; 641 caddr_t kva; 642 size_t size; 643 { 644 struct ebus_softc *sc = t->_cookie; 645 646 iommu_dvmamem_unmap(t, sc->sc_parent->sc_is, kva, size); 647 } 648
Indexes created Sun Sep 28 12:09:53 GMT 2025