ebus.c revision 1.11.2.2
1 /* $NetBSD: ebus.c,v 1.11.2.2 2001/05/15 22:07:48 he 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 #include <vm/vm.h> 68 #include <vm/vm_kern.h> 69 70 #define _SPARC_BUS_DMA_PRIVATE 71 #include <machine/bus.h> 72 #include <machine/autoconf.h> 73 74 #include <dev/pci/pcivar.h> 75 #include <dev/pci/pcireg.h> 76 #include <dev/pci/pcidevs.h> 77 78 #include <sparc64/dev/iommureg.h> 79 #include <sparc64/dev/iommuvar.h> 80 #include <sparc64/dev/psychoreg.h> 81 #include <sparc64/dev/psychovar.h> 82 #include <sparc64/dev/ebusreg.h> 83 #include <sparc64/dev/ebusvar.h> 84 #include <sparc64/sparc64/cache.h> 85 86 int ebus_match __P((struct device *, struct cfdata *, void *)); 87 void ebus_attach __P((struct device *, struct device *, void *)); 88 89 struct cfattach ebus_ca = { 90 sizeof(struct ebus_softc), ebus_match, ebus_attach 91 }; 92 93 int ebus_setup_attach_args __P((struct ebus_softc *, int, 94 struct ebus_attach_args *)); 95 void ebus_destroy_attach_args __P((struct ebus_attach_args *)); 96 int ebus_print __P((void *, const char *)); 97 void ebus_find_ino __P((struct ebus_softc *, struct ebus_attach_args *)); 98 int ebus_find_node __P((struct pci_attach_args *)); 99 100 /* 101 * here are our bus space and bus dma routines. 102 */ 103 static int ebus_bus_mmap __P((bus_space_tag_t, bus_type_t, bus_addr_t, 104 int, bus_space_handle_t *)); 105 static int _ebus_bus_map __P((bus_space_tag_t, bus_type_t, bus_addr_t, 106 bus_size_t, int, vaddr_t, 107 bus_space_handle_t *)); 108 static void *ebus_intr_establish __P((bus_space_tag_t, int, int, int, 109 int (*) __P((void *)), void *)); 110 111 static int ebus_dmamap_load __P((bus_dma_tag_t, bus_dmamap_t, void *, 112 bus_size_t, struct proc *, int)); 113 static void ebus_dmamap_unload __P((bus_dma_tag_t, bus_dmamap_t)); 114 static void ebus_dmamap_sync __P((bus_dma_tag_t, bus_dmamap_t, bus_addr_t, 115 bus_size_t, int)); 116 int ebus_dmamem_alloc __P((bus_dma_tag_t, bus_size_t, bus_size_t, bus_size_t, 117 bus_dma_segment_t *, int, int *, int)); 118 void ebus_dmamem_free __P((bus_dma_tag_t, bus_dma_segment_t *, int)); 119 int ebus_dmamem_map __P((bus_dma_tag_t, bus_dma_segment_t *, int, size_t, 120 caddr_t *, int)); 121 void ebus_dmamem_unmap __P((bus_dma_tag_t, caddr_t, size_t)); 122 123 int 124 ebus_match(parent, match, aux) 125 struct device *parent; 126 struct cfdata *match; 127 void *aux; 128 { 129 struct pci_attach_args *pa = aux; 130 131 if (PCI_CLASS(pa->pa_class) == PCI_CLASS_BRIDGE && 132 PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SUN && 133 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SUN_EBUS && 134 ebus_find_node(pa)) 135 return (1); 136 137 return (0); 138 } 139 140 /* 141 * attach an ebus and all it's children. this code is modeled 142 * after the sbus code which does similar things. 143 */ 144 void 145 ebus_attach(parent, self, aux) 146 struct device *parent, *self; 147 void *aux; 148 { 149 struct ebus_softc *sc = (struct ebus_softc *)self; 150 struct pci_attach_args *pa = aux; 151 struct ebus_attach_args eba; 152 struct ebus_interrupt_map_mask *immp; 153 int node, nmapmask, error; 154 char devinfo[256]; 155 156 printf("\n"); 157 158 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo); 159 printf("%s: %s, revision 0x%02x\n", self->dv_xname, devinfo, 160 PCI_REVISION(pa->pa_class)); 161 162 sc->sc_parent = (struct psycho_softc *)parent; 163 sc->sc_bustag = pa->pa_memt; 164 sc->sc_childbustag = ebus_alloc_bus_tag(sc, PCI_MEMORY_BUS_SPACE); 165 sc->sc_dmatag = ebus_alloc_dma_tag(sc, pa->pa_dmat); 166 167 node = ebus_find_node(pa); 168 if (node == 0) 169 panic("could not find ebus node"); 170 171 sc->sc_node = node; 172 173 /* 174 * fill in our softc with information from the prom 175 */ 176 sc->sc_intmap = NULL; 177 sc->sc_range = NULL; 178 error = getprop(node, "interrupt-map", 179 sizeof(struct ebus_interrupt_map), 180 &sc->sc_nintmap, (void **)&sc->sc_intmap); 181 switch (error) { 182 case 0: 183 immp = &sc->sc_intmapmask; 184 error = getprop(node, "interrupt-map-mask", 185 sizeof(struct ebus_interrupt_map_mask), &nmapmask, 186 (void **)&immp); 187 if (error) 188 panic("could not get ebus interrupt-map-mask"); 189 if (nmapmask != 1) 190 panic("ebus interrupt-map-mask is broken"); 191 break; 192 case ENOENT: 193 break; 194 default: 195 panic("ebus interrupt-map: error %d", error); 196 break; 197 } 198 199 error = getprop(node, "ranges", sizeof(struct ebus_ranges), 200 &sc->sc_nrange, (void **)&sc->sc_range); 201 if (error) 202 panic("ebus ranges: error %d", error); 203 204 /* 205 * now attach all our children 206 */ 207 DPRINTF(EDB_CHILD, ("ebus node %08x, searching children...\n", node)); 208 for (node = firstchild(node); node; node = nextsibling(node)) { 209 char *name = getpropstring(node, "name"); 210 211 if (ebus_setup_attach_args(sc, node, &eba) != 0) { 212 printf("ebus_attach: %s: incomplete\n", name); 213 continue; 214 } else { 215 DPRINTF(EDB_CHILD, ("- found child `%s', attaching\n", eba.ea_name)); 216 (void)config_found(self, &eba, ebus_print); 217 } 218 ebus_destroy_attach_args(&eba); 219 } 220 } 221 222 int 223 ebus_setup_attach_args(sc, node, ea) 224 struct ebus_softc *sc; 225 int node; 226 struct ebus_attach_args *ea; 227 { 228 int n, rv; 229 230 bzero(ea, sizeof(struct ebus_attach_args)); 231 rv = getprop(node, "name", 1, &n, (void **)&ea->ea_name); 232 if (rv != 0) 233 return (rv); 234 ea->ea_name[n] = '\0'; 235 236 ea->ea_node = node; 237 ea->ea_bustag = sc->sc_childbustag; 238 ea->ea_dmatag = sc->sc_dmatag; 239 240 rv = getprop(node, "reg", sizeof(struct ebus_regs), &ea->ea_nregs, 241 (void **)&ea->ea_regs); 242 if (rv) 243 return (rv); 244 245 rv = getprop(node, "address", sizeof(u_int32_t), &ea->ea_nvaddrs, 246 (void **)&ea->ea_vaddrs); 247 if (rv != ENOENT) { 248 if (rv) 249 return (rv); 250 251 if (ea->ea_nregs != ea->ea_nvaddrs) 252 printf("ebus loses: device %s: %d regs and %d addrs\n", 253 ea->ea_name, ea->ea_nregs, ea->ea_nvaddrs); 254 } else 255 ea->ea_nvaddrs = 0; 256 257 if (getprop(node, "interrupts", sizeof(u_int32_t), &ea->ea_nintrs, 258 (void **)&ea->ea_intrs)) 259 ea->ea_nintrs = 0; 260 else 261 ebus_find_ino(sc, ea); 262 263 return (0); 264 } 265 266 void 267 ebus_destroy_attach_args(ea) 268 struct ebus_attach_args *ea; 269 { 270 271 if (ea->ea_name) 272 free((void *)ea->ea_name, M_DEVBUF); 273 if (ea->ea_regs) 274 free((void *)ea->ea_regs, M_DEVBUF); 275 if (ea->ea_intrs) 276 free((void *)ea->ea_intrs, M_DEVBUF); 277 if (ea->ea_vaddrs) 278 free((void *)ea->ea_vaddrs, M_DEVBUF); 279 } 280 281 int 282 ebus_print(aux, p) 283 void *aux; 284 const char *p; 285 { 286 struct ebus_attach_args *ea = aux; 287 int i; 288 289 if (p) 290 printf("%s at %s", ea->ea_name, p); 291 for (i = 0; i < ea->ea_nregs; i++) 292 printf(" addr %x-%x", ea->ea_regs[i].lo, 293 ea->ea_regs[i].lo + ea->ea_regs[i].size - 1); 294 for (i = 0; i < ea->ea_nintrs; i++) 295 printf(" ipl %d", ea->ea_intrs[i]); 296 return (UNCONF); 297 } 298 299 /* 300 * find the INO values for each interrupt and fill them in. 301 * 302 * for each "reg" property of this device, mask it's hi and lo 303 * values with the "interrupt-map-mask"'s hi/lo values, and also 304 * mask the interrupt number with the interrupt mask. search the 305 * "interrupt-map" list for matching values of hi, lo and interrupt 306 * to give the INO for this interrupt. 307 */ 308 void 309 ebus_find_ino(sc, ea) 310 struct ebus_softc *sc; 311 struct ebus_attach_args *ea; 312 { 313 u_int32_t hi, lo, intr; 314 int i, j, k; 315 316 if (sc->sc_nintmap == 0) { 317 /* 318 * If there is no interrupt map in the ebus node, 319 * assume that the child's `interrupt' property is 320 * already in a format suitable for the parent bus. 321 */ 322 return; 323 } 324 325 DPRINTF(EDB_INTRMAP, ("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, ("; intr %x masked to %x", ea->ea_intrs[j], intr)); 332 for (i = 0; i < ea->ea_nregs; i++) { 333 hi = ea->ea_regs[i].hi & sc->sc_intmapmask.hi; 334 lo = ea->ea_regs[i].lo & sc->sc_intmapmask.lo; 335 336 DPRINTF(EDB_INTRMAP, ("; reg hi.lo %08x.08x masked to %08x.%08x", ea->ea_regs[i].hi, ea->ea_regs[i].lo, hi, lo)); 337 for (k = 0; k < sc->sc_nintmap; k++) { 338 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)); 339 if (hi == sc->sc_intmap[k].hi && 340 lo == sc->sc_intmap[k].lo && 341 intr == sc->sc_intmap[k].intr) { 342 ea->ea_intrs[j] = 343 sc->sc_intmap[k].cintr|INTMAP_OBIO; 344 DPRINTF(EDB_INTRMAP, ("; FOUND IT! changing to %d\n", sc->sc_intmap[k].cintr)); 345 goto next_intr; 346 } 347 } 348 } 349 next_intr: 350 } 351 } 352 353 /* 354 * what is our OFW node? this depends on our pci chipset tag 355 * having it's "node" value set to the OFW node of the PCI bus, 356 * see the simba driver. 357 */ 358 int 359 ebus_find_node(pa) 360 struct pci_attach_args *pa; 361 { 362 int node = pa->pa_pc->node; 363 int n, *ap; 364 int pcibus, bus, dev, fn; 365 366 DPRINTF(EDB_PROM, ("ebus_find_node: looking at pci node %08x\n", node)); 367 for (node = firstchild(node); node; node = nextsibling(node)) { 368 char *name = getpropstring(node, "name"); 369 370 DPRINTF(EDB_PROM, ("ebus_find_node: looking at PCI device `%s', node = %08x\n", name, node)); 371 /* must be "ebus" */ 372 if (strcmp(name, "ebus") != 0) 373 continue; 374 375 /* pull the PCI bus out of the pa_tag */ 376 pcibus = (pa->pa_tag >> 16) & 0xff; 377 DPRINTF(EDB_PROM, ("; pcibus %d dev %d fn %d\n", pcibus, pa->pa_device, pa->pa_function)); 378 379 /* get the PCI bus/device/function for this node */ 380 ap = NULL; 381 if (getprop(node, "reg", sizeof(int), &n, 382 (void **)&ap)) 383 continue; 384 385 bus = (ap[0] >> 16) & 0xff; 386 dev = (ap[0] >> 11) & 0x1f; 387 fn = (ap[0] >> 8) & 0x7; 388 389 DPRINTF(EDB_PROM, ("; looking for bus %d dev %d fn %d\n", pcibus, pa->pa_device, pa->pa_function)); 390 if (pa->pa_device != dev || 391 pa->pa_function != fn || 392 pcibus != bus) 393 continue; 394 395 DPRINTF(EDB_PROM, ("; found it, returning %08x\n", node)); 396 /* found it! */ 397 free(ap, M_DEVBUF); 398 return (node); 399 } 400 401 /* damn! */ 402 return (0); 403 } 404 405 /* 406 * bus space and bus dma below here 407 */ 408 bus_space_tag_t 409 ebus_alloc_bus_tag(sc, type) 410 struct ebus_softc *sc; 411 int type; 412 { 413 bus_space_tag_t bt; 414 415 bt = (bus_space_tag_t) 416 malloc(sizeof(struct sparc_bus_space_tag), M_DEVBUF, M_NOWAIT); 417 if (bt == NULL) 418 panic("could not allocate ebus bus tag"); 419 420 bzero(bt, sizeof *bt); 421 bt->cookie = sc; 422 bt->parent = sc->sc_bustag; 423 bt->type = type; 424 bt->sparc_bus_map = _ebus_bus_map; 425 bt->sparc_bus_mmap = ebus_bus_mmap; 426 bt->sparc_intr_establish = ebus_intr_establish; 427 return (bt); 428 } 429 430 /* XXX? */ 431 bus_dma_tag_t 432 ebus_alloc_dma_tag(sc, pdt) 433 struct ebus_softc *sc; 434 bus_dma_tag_t pdt; 435 { 436 bus_dma_tag_t dt; 437 438 dt = (bus_dma_tag_t) 439 malloc(sizeof(struct sparc_bus_dma_tag), M_DEVBUF, M_NOWAIT); 440 if (dt == NULL) 441 panic("could not allocate ebus dma tag"); 442 443 bzero(dt, sizeof *dt); 444 dt->_cookie = sc; 445 dt->_parent = pdt; 446 #define PCOPY(x) dt->x = pdt->x 447 PCOPY(_dmamap_create); 448 PCOPY(_dmamap_destroy); 449 dt->_dmamap_load = ebus_dmamap_load; 450 PCOPY(_dmamap_load_mbuf); 451 PCOPY(_dmamap_load_uio); 452 PCOPY(_dmamap_load_raw); 453 dt->_dmamap_unload = ebus_dmamap_unload; 454 dt->_dmamap_sync = ebus_dmamap_sync; 455 dt->_dmamem_alloc = ebus_dmamem_alloc; 456 dt->_dmamem_free = ebus_dmamem_free; 457 dt->_dmamem_map = ebus_dmamem_map; 458 dt->_dmamem_unmap = ebus_dmamem_unmap; 459 PCOPY(_dmamem_mmap); 460 #undef PCOPY 461 return (dt); 462 } 463 464 /* 465 * bus space support. <sparc64/dev/psychoreg.h> has a discussion 466 * about PCI physical addresses, which also applies to ebus. 467 */ 468 static int 469 _ebus_bus_map(t, btype, offset, size, flags, vaddr, hp) 470 bus_space_tag_t t; 471 bus_type_t btype; 472 bus_addr_t offset; 473 bus_size_t size; 474 int flags; 475 vaddr_t vaddr; 476 bus_space_handle_t *hp; 477 { 478 struct ebus_softc *sc = t->cookie; 479 bus_addr_t hi, lo; 480 int i; 481 482 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)); 483 484 hi = offset >> 32UL; 485 lo = offset & 0xffffffff; 486 DPRINTF(EDB_BUSMAP, (" (hi %08x lo %08x)", (u_int)hi, (u_int)lo)); 487 for (i = 0; i < sc->sc_nrange; i++) { 488 bus_addr_t pciaddr; 489 490 if (hi != sc->sc_range[i].child_hi) 491 continue; 492 if (lo < sc->sc_range[i].child_lo || 493 (lo + size) > (sc->sc_range[i].child_lo + sc->sc_range[i].size)) 494 continue; 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, ("\n_ebus_bus_map: mapping paddr offset %qx pciaddr %qx\n", 500 offset, pciaddr)); 501 /* pass it onto the psycho */ 502 return (bus_space_map2(sc->sc_bustag, t->type, pciaddr, 503 size, flags, vaddr, hp)); 504 } 505 DPRINTF(EDB_BUSMAP, (": FAILED\n")); 506 return (EINVAL); 507 } 508 509 static int 510 ebus_bus_mmap(t, btype, paddr, flags, hp) 511 bus_space_tag_t t; 512 bus_type_t btype; 513 bus_addr_t paddr; 514 int flags; 515 bus_space_handle_t *hp; 516 { 517 bus_addr_t offset = paddr; 518 struct ebus_softc *sc = t->cookie; 519 int i; 520 521 for (i = 0; i < sc->sc_nrange; i++) { 522 bus_addr_t paddr = ((bus_addr_t)sc->sc_range[i].child_hi << 32) | 523 sc->sc_range[i].child_lo; 524 525 if (offset != paddr) 526 continue; 527 528 DPRINTF(EDB_BUSMAP, ("\n_ebus_bus_mmap: mapping paddr %qx\n", paddr)); 529 return (bus_space_mmap(sc->sc_bustag, 0, paddr, 530 flags, hp)); 531 } 532 533 return (-1); 534 } 535 536 /* 537 * install an interrupt handler for a PCI device 538 */ 539 void * 540 ebus_intr_establish(t, pri, level, flags, handler, arg) 541 bus_space_tag_t t; 542 int pri; 543 int level; 544 int flags; 545 int (*handler) __P((void *)); 546 void *arg; 547 { 548 return (bus_intr_establish(t->parent, pri, level, flags, handler, arg)); 549 } 550 551 /* 552 * bus dma support 553 */ 554 int 555 ebus_dmamap_load(t, map, buf, buflen, p, flags) 556 bus_dma_tag_t t; 557 bus_dmamap_t map; 558 void *buf; 559 bus_size_t buflen; 560 struct proc *p; 561 int flags; 562 { 563 struct ebus_softc *sc = t->_cookie; 564 565 return (iommu_dvmamap_load(t, sc->sc_parent->sc_is, map, buf, buflen, 566 p, flags)); 567 } 568 569 void 570 ebus_dmamap_unload(t, map) 571 bus_dma_tag_t t; 572 bus_dmamap_t map; 573 { 574 struct ebus_softc *sc = t->_cookie; 575 576 iommu_dvmamap_unload(t, sc->sc_parent->sc_is, map); 577 } 578 579 void 580 ebus_dmamap_sync(t, map, offset, len, ops) 581 bus_dma_tag_t t; 582 bus_dmamap_t map; 583 bus_addr_t offset; 584 bus_size_t len; 585 int ops; 586 { 587 struct ebus_softc *sc = t->_cookie; 588 589 iommu_dvmamap_sync(t, sc->sc_parent->sc_is, map, offset, len, ops); 590 bus_dmamap_sync(t->_parent, map, offset, len, ops); 591 } 592 593 int 594 ebus_dmamem_alloc(t, size, alignment, boundary, segs, nsegs, rsegs, flags) 595 bus_dma_tag_t t; 596 bus_size_t size; 597 bus_size_t alignment; 598 bus_size_t boundary; 599 bus_dma_segment_t *segs; 600 int nsegs; 601 int *rsegs; 602 int flags; 603 { 604 struct ebus_softc *sc = t->_cookie; 605 606 return (iommu_dvmamem_alloc(t, sc->sc_parent->sc_is, size, alignment, 607 boundary, segs, nsegs, rsegs, flags)); 608 } 609 610 void 611 ebus_dmamem_free(t, segs, nsegs) 612 bus_dma_tag_t t; 613 bus_dma_segment_t *segs; 614 int nsegs; 615 { 616 struct ebus_softc *sc = t->_cookie; 617 618 iommu_dvmamem_free(t, sc->sc_parent->sc_is, segs, nsegs); 619 } 620 621 int 622 ebus_dmamem_map(t, segs, nsegs, size, kvap, flags) 623 bus_dma_tag_t t; 624 bus_dma_segment_t *segs; 625 int nsegs; 626 size_t size; 627 caddr_t *kvap; 628 int flags; 629 { 630 struct ebus_softc *sc = t->_cookie; 631 632 return (iommu_dvmamem_map(t, sc->sc_parent->sc_is, segs, nsegs, 633 size, kvap, flags)); 634 } 635 636 void 637 ebus_dmamem_unmap(t, kva, size) 638 bus_dma_tag_t t; 639 caddr_t kva; 640 size_t size; 641 { 642 struct ebus_softc *sc = t->_cookie; 643 644 iommu_dvmamem_unmap(t, sc->sc_parent->sc_is, kva, size); 645 } 646
Indexes created Fri Oct 03 02:09:57 GMT 2025