ebus.c revision 1.25
1 /* $NetBSD: ebus.c,v 1.25 2001/09/10 16:17:06 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 int ebus_bus_mmap __P((bus_space_tag_t, bus_type_t, bus_addr_t, 102 int, bus_space_handle_t *)); 103 static int _ebus_bus_map __P((bus_space_tag_t, bus_type_t, bus_addr_t, 104 bus_size_t, int, vaddr_t, 105 bus_space_handle_t *)); 106 static void *ebus_intr_establish __P((bus_space_tag_t, int, int, int, 107 int (*) __P((void *)), void *)); 108 109 static int ebus_dmamap_load __P((bus_dma_tag_t, bus_dmamap_t, void *, 110 bus_size_t, struct proc *, int)); 111 static void ebus_dmamap_unload __P((bus_dma_tag_t, bus_dmamap_t)); 112 static void ebus_dmamap_sync __P((bus_dma_tag_t, bus_dmamap_t, bus_addr_t, 113 bus_size_t, int)); 114 int ebus_dmamem_alloc __P((bus_dma_tag_t, bus_size_t, bus_size_t, bus_size_t, 115 bus_dma_segment_t *, int, int *, int)); 116 void ebus_dmamem_free __P((bus_dma_tag_t, bus_dma_segment_t *, int)); 117 int ebus_dmamem_map __P((bus_dma_tag_t, bus_dma_segment_t *, int, size_t, 118 caddr_t *, int)); 119 void ebus_dmamem_unmap __P((bus_dma_tag_t, caddr_t, size_t)); 120 121 int 122 ebus_match(parent, match, aux) 123 struct device *parent; 124 struct cfdata *match; 125 void *aux; 126 { 127 struct pci_attach_args *pa = aux; 128 char name[10]; 129 int node; 130 131 /* Only attach if there's a PROM node. */ 132 node = PCITAG_NODE(pa->pa_tag); 133 if (node == -1) return (0); 134 135 /* Match a real ebus */ 136 OF_getprop(node, "name", &name, sizeof(name)); 137 if (PCI_CLASS(pa->pa_class) == PCI_CLASS_BRIDGE && 138 PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SUN && 139 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SUN_EBUS && 140 strcmp(name, "ebus") == 0) 141 return (1); 142 143 /* Or a real ebus III */ 144 OF_getprop(node, "name", &name, sizeof(name)); 145 if (PCI_CLASS(pa->pa_class) == PCI_CLASS_BRIDGE && 146 PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SUN && 147 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SUN_EBUSIII && 148 strcmp(name, "ebus") == 0) 149 return (1); 150 151 /* Or a PCI-ISA bridge XXX I hope this is on-board. */ 152 if (PCI_CLASS(pa->pa_class) == PCI_CLASS_BRIDGE && 153 PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_BRIDGE_ISA) { 154 return (1); 155 } 156 157 return (0); 158 } 159 160 /* 161 * attach an ebus and all it's children. this code is modeled 162 * after the sbus code which does similar things. 163 */ 164 void 165 ebus_attach(parent, self, aux) 166 struct device *parent, *self; 167 void *aux; 168 { 169 struct ebus_softc *sc = (struct ebus_softc *)self; 170 struct pci_attach_args *pa = aux; 171 struct ebus_attach_args eba; 172 struct ebus_interrupt_map_mask *immp; 173 int node, nmapmask, error; 174 char devinfo[256]; 175 176 printf("\n"); 177 178 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo); 179 printf("%s: %s, revision 0x%02x\n", self->dv_xname, devinfo, 180 PCI_REVISION(pa->pa_class)); 181 182 sc->sc_parent = (struct psycho_softc *)parent; 183 sc->sc_memtag = pa->pa_memt; 184 sc->sc_iotag = pa->pa_iot; 185 sc->sc_childbustag = ebus_alloc_bus_tag(sc, PCI_MEMORY_BUS_SPACE); 186 sc->sc_dmatag = ebus_alloc_dma_tag(sc, pa->pa_dmat); 187 188 node = PCITAG_NODE(pa->pa_tag); 189 if (node == -1) 190 panic("could not find ebus node"); 191 192 sc->sc_node = node; 193 194 /* 195 * fill in our softc with information from the prom 196 */ 197 sc->sc_intmap = NULL; 198 sc->sc_range = NULL; 199 error = getprop(node, "interrupt-map", 200 sizeof(struct ebus_interrupt_map), 201 &sc->sc_nintmap, (void **)&sc->sc_intmap); 202 switch (error) { 203 case 0: 204 immp = &sc->sc_intmapmask; 205 error = getprop(node, "interrupt-map-mask", 206 sizeof(struct ebus_interrupt_map_mask), &nmapmask, 207 (void **)&immp); 208 if (error) 209 panic("could not get ebus interrupt-map-mask"); 210 if (nmapmask != 1) 211 panic("ebus interrupt-map-mask is broken"); 212 break; 213 case ENOENT: 214 break; 215 default: 216 panic("ebus interrupt-map: error %d", error); 217 break; 218 } 219 220 error = getprop(node, "ranges", sizeof(struct ebus_ranges), 221 &sc->sc_nrange, (void **)&sc->sc_range); 222 if (error) 223 panic("ebus ranges: error %d", error); 224 225 /* 226 * now attach all our children 227 */ 228 DPRINTF(EDB_CHILD, ("ebus node %08x, searching children...\n", node)); 229 for (node = firstchild(node); node; node = nextsibling(node)) { 230 char *name = getpropstring(node, "name"); 231 232 if (ebus_setup_attach_args(sc, node, &eba) != 0) { 233 printf("ebus_attach: %s: incomplete\n", name); 234 continue; 235 } else { 236 DPRINTF(EDB_CHILD, ("- found child `%s', attaching\n", 237 eba.ea_name)); 238 (void)config_found(self, &eba, ebus_print); 239 } 240 ebus_destroy_attach_args(&eba); 241 } 242 } 243 244 int 245 ebus_setup_attach_args(sc, node, ea) 246 struct ebus_softc *sc; 247 int node; 248 struct ebus_attach_args *ea; 249 { 250 int n, rv; 251 252 bzero(ea, sizeof(struct ebus_attach_args)); 253 rv = getprop(node, "name", 1, &n, (void **)&ea->ea_name); 254 if (rv != 0) 255 return (rv); 256 ea->ea_name[n] = '\0'; 257 258 ea->ea_node = node; 259 ea->ea_bustag = sc->sc_childbustag; 260 ea->ea_dmatag = sc->sc_dmatag; 261 262 rv = getprop(node, "reg", sizeof(struct ebus_regs), &ea->ea_nregs, 263 (void **)&ea->ea_regs); 264 if (rv) 265 return (rv); 266 267 rv = getprop(node, "address", sizeof(u_int32_t), &ea->ea_nvaddrs, 268 (void **)&ea->ea_vaddrs); 269 if (rv != ENOENT) { 270 if (rv) 271 return (rv); 272 273 if (ea->ea_nregs != ea->ea_nvaddrs) 274 printf("ebus loses: device %s: %d regs and %d addrs\n", 275 ea->ea_name, ea->ea_nregs, ea->ea_nvaddrs); 276 } else 277 ea->ea_nvaddrs = 0; 278 279 if (getprop(node, "interrupts", sizeof(u_int32_t), &ea->ea_nintrs, 280 (void **)&ea->ea_intrs)) 281 ea->ea_nintrs = 0; 282 else 283 ebus_find_ino(sc, ea); 284 285 return (0); 286 } 287 288 void 289 ebus_destroy_attach_args(ea) 290 struct ebus_attach_args *ea; 291 { 292 293 if (ea->ea_name) 294 free((void *)ea->ea_name, M_DEVBUF); 295 if (ea->ea_regs) 296 free((void *)ea->ea_regs, M_DEVBUF); 297 if (ea->ea_intrs) 298 free((void *)ea->ea_intrs, M_DEVBUF); 299 if (ea->ea_vaddrs) 300 free((void *)ea->ea_vaddrs, M_DEVBUF); 301 } 302 303 int 304 ebus_print(aux, p) 305 void *aux; 306 const char *p; 307 { 308 struct ebus_attach_args *ea = aux; 309 int i; 310 311 if (p) 312 printf("%s at %s", ea->ea_name, p); 313 for (i = 0; i < ea->ea_nregs; i++) 314 printf("%s %x-%x", i == 0 ? " addr" : ",", 315 ea->ea_regs[i].lo, 316 ea->ea_regs[i].lo + ea->ea_regs[i].size - 1); 317 for (i = 0; i < ea->ea_nintrs; i++) 318 printf(" ipl %d", ea->ea_intrs[i]); 319 return (UNCONF); 320 } 321 322 323 /* 324 * find the INO values for each interrupt and fill them in. 325 * 326 * for each "reg" property of this device, mask it's hi and lo 327 * values with the "interrupt-map-mask"'s hi/lo values, and also 328 * mask the interrupt number with the interrupt mask. search the 329 * "interrupt-map" list for matching values of hi, lo and interrupt 330 * to give the INO for this interrupt. 331 */ 332 void 333 ebus_find_ino(sc, ea) 334 struct ebus_softc *sc; 335 struct ebus_attach_args *ea; 336 { 337 u_int32_t hi, lo, intr; 338 int i, j, k; 339 340 if (sc->sc_nintmap == 0) { 341 for (i = 0; i < ea->ea_nintrs; i++) { 342 OF_mapintr(ea->ea_node, &ea->ea_intrs[i], 343 sizeof(ea->ea_intrs[0]), 344 sizeof(ea->ea_intrs[0])); 345 } 346 return; 347 } 348 349 DPRINTF(EDB_INTRMAP, 350 ("ebus_find_ino: searching %d interrupts", ea->ea_nintrs)); 351 352 for (j = 0; j < ea->ea_nintrs; j++) { 353 354 intr = ea->ea_intrs[j] & sc->sc_intmapmask.intr; 355 356 DPRINTF(EDB_INTRMAP, 357 ("; intr %x masked to %x", ea->ea_intrs[j], intr)); 358 for (i = 0; i < ea->ea_nregs; i++) { 359 hi = ea->ea_regs[i].hi & sc->sc_intmapmask.hi; 360 lo = ea->ea_regs[i].lo & sc->sc_intmapmask.lo; 361 362 DPRINTF(EDB_INTRMAP, 363 ("; reg hi.lo %08x.%08x masked to %08x.%08x", 364 ea->ea_regs[i].hi, ea->ea_regs[i].lo, hi, lo)); 365 for (k = 0; k < sc->sc_nintmap; k++) { 366 DPRINTF(EDB_INTRMAP, 367 ("; checking hi.lo %08x.%08x intr %x", 368 sc->sc_intmap[k].hi, sc->sc_intmap[k].lo, 369 sc->sc_intmap[k].intr)); 370 if (hi == sc->sc_intmap[k].hi && 371 lo == sc->sc_intmap[k].lo && 372 intr == sc->sc_intmap[k].intr) { 373 ea->ea_intrs[j] = 374 sc->sc_intmap[k].cintr; 375 DPRINTF(EDB_INTRMAP, 376 ("; FOUND IT! changing to %d\n", 377 sc->sc_intmap[k].cintr)); 378 goto next_intr; 379 } 380 } 381 } 382 next_intr:; 383 } 384 } 385 386 387 /* 388 * bus space and bus dma below here 389 */ 390 bus_space_tag_t 391 ebus_alloc_bus_tag(sc, type) 392 struct ebus_softc *sc; 393 int type; 394 { 395 bus_space_tag_t bt; 396 397 bt = (bus_space_tag_t) 398 malloc(sizeof(struct sparc_bus_space_tag), M_DEVBUF, M_NOWAIT); 399 if (bt == NULL) 400 panic("could not allocate ebus bus tag"); 401 402 bzero(bt, sizeof *bt); 403 bt->cookie = sc; 404 bt->parent = sc->sc_memtag; 405 bt->type = type; 406 bt->sparc_bus_map = _ebus_bus_map; 407 bt->sparc_bus_mmap = ebus_bus_mmap; 408 bt->sparc_intr_establish = ebus_intr_establish; 409 return (bt); 410 } 411 412 /* XXX? */ 413 bus_dma_tag_t 414 ebus_alloc_dma_tag(sc, pdt) 415 struct ebus_softc *sc; 416 bus_dma_tag_t pdt; 417 { 418 bus_dma_tag_t dt; 419 420 dt = (bus_dma_tag_t) 421 malloc(sizeof(struct sparc_bus_dma_tag), M_DEVBUF, M_NOWAIT); 422 if (dt == NULL) 423 panic("could not allocate ebus dma tag"); 424 425 bzero(dt, sizeof *dt); 426 dt->_cookie = sc; 427 dt->_parent = pdt; 428 #define PCOPY(x) dt->x = pdt->x 429 PCOPY(_dmamap_create); 430 PCOPY(_dmamap_destroy); 431 dt->_dmamap_load = ebus_dmamap_load; 432 PCOPY(_dmamap_load_mbuf); 433 PCOPY(_dmamap_load_uio); 434 PCOPY(_dmamap_load_raw); 435 dt->_dmamap_unload = ebus_dmamap_unload; 436 dt->_dmamap_sync = ebus_dmamap_sync; 437 dt->_dmamem_alloc = ebus_dmamem_alloc; 438 dt->_dmamem_free = ebus_dmamem_free; 439 dt->_dmamem_map = ebus_dmamem_map; 440 dt->_dmamem_unmap = ebus_dmamem_unmap; 441 PCOPY(_dmamem_mmap); 442 #undef PCOPY 443 return (dt); 444 } 445 446 /* 447 * bus space support. <sparc64/dev/psychoreg.h> has a discussion 448 * about PCI physical addresses, which also applies to ebus. 449 */ 450 static int 451 _ebus_bus_map(t, btype, offset, size, flags, vaddr, hp) 452 bus_space_tag_t t; 453 bus_type_t btype; 454 bus_addr_t offset; 455 bus_size_t size; 456 int flags; 457 vaddr_t vaddr; 458 bus_space_handle_t *hp; 459 { 460 struct ebus_softc *sc = t->cookie; 461 bus_addr_t hi, lo; 462 int i, ss; 463 464 DPRINTF(EDB_BUSMAP, 465 ("\n_ebus_bus_map: type %d off %016llx sz %x flags %d va %p", 466 (int)t->type, (unsigned long long)offset, (int)size, (int)flags, 467 (void *)vaddr)); 468 469 hi = offset >> 32UL; 470 lo = offset & 0xffffffff; 471 DPRINTF(EDB_BUSMAP, (" (hi %08x lo %08x)", (u_int)hi, (u_int)lo)); 472 for (i = 0; i < sc->sc_nrange; i++) { 473 bus_addr_t pciaddr; 474 475 if (hi != sc->sc_range[i].child_hi) 476 continue; 477 if (lo < sc->sc_range[i].child_lo || 478 (lo + size) > 479 (sc->sc_range[i].child_lo + sc->sc_range[i].size)) 480 continue; 481 482 /* Isolate address space and find the right tag */ 483 ss = (sc->sc_range[i].phys_hi>>24)&3; 484 switch (ss) { 485 case 1: /* I/O space */ 486 t = sc->sc_iotag; 487 break; 488 case 2: /* Memory space */ 489 t = sc->sc_memtag; 490 break; 491 case 0: /* Config space */ 492 case 3: /* 64-bit Memory space */ 493 default: /* WTF? */ 494 /* We don't handle these */ 495 panic("_ebus_bus_map: illegal space %x", ss); 496 break; 497 } 498 pciaddr = ((bus_addr_t)sc->sc_range[i].phys_mid << 32UL) | 499 sc->sc_range[i].phys_lo; 500 pciaddr += lo; 501 DPRINTF(EDB_BUSMAP, 502 ("\n_ebus_bus_map: mapping space %x paddr offset %qx pciaddr %qx\n", 503 ss, (unsigned long long)offset, (unsigned long long)pciaddr)); 504 /* pass it onto the psycho */ 505 return (bus_space_map2(t, sc->sc_range[i].phys_hi, 506 pciaddr, size, flags, vaddr, hp)); 507 } 508 DPRINTF(EDB_BUSMAP, (": FAILED\n")); 509 return (EINVAL); 510 } 511 512 static int 513 ebus_bus_mmap(t, btype, paddr, flags, hp) 514 bus_space_tag_t t; 515 bus_type_t btype; 516 bus_addr_t paddr; 517 int flags; 518 bus_space_handle_t *hp; 519 { 520 bus_addr_t offset = paddr; 521 struct ebus_softc *sc = t->cookie; 522 int i; 523 524 for (i = 0; i < sc->sc_nrange; i++) { 525 bus_addr_t paddr = ((bus_addr_t)sc->sc_range[i].child_hi << 32) | 526 sc->sc_range[i].child_lo; 527 528 if (offset != paddr) 529 continue; 530 531 DPRINTF(EDB_BUSMAP, ("\n_ebus_bus_mmap: mapping paddr %qx\n", 532 (unsigned long long)paddr)); 533 return (bus_space_mmap(sc->sc_memtag, 0, paddr, 534 flags, hp)); 535 } 536 537 return (-1); 538 } 539 540 /* 541 * install an interrupt handler for a PCI device 542 */ 543 void * 544 ebus_intr_establish(t, pri, level, flags, handler, arg) 545 bus_space_tag_t t; 546 int pri; 547 int level; 548 int flags; 549 int (*handler) __P((void *)); 550 void *arg; 551 { 552 return (bus_intr_establish(t->parent, pri, level, flags, handler, arg)); 553 } 554 555 /* 556 * bus dma support 557 */ 558 int 559 ebus_dmamap_load(t, map, buf, buflen, p, flags) 560 bus_dma_tag_t t; 561 bus_dmamap_t map; 562 void *buf; 563 bus_size_t buflen; 564 struct proc *p; 565 int flags; 566 { 567 struct ebus_softc *sc = t->_cookie; 568 569 return (iommu_dvmamap_load(t, sc->sc_parent->sc_is, map, buf, buflen, 570 p, flags)); 571 } 572 573 void 574 ebus_dmamap_unload(t, map) 575 bus_dma_tag_t t; 576 bus_dmamap_t map; 577 { 578 struct ebus_softc *sc = t->_cookie; 579 580 iommu_dvmamap_unload(t, sc->sc_parent->sc_is, map); 581 } 582 583 void 584 ebus_dmamap_sync(t, map, offset, len, ops) 585 bus_dma_tag_t t; 586 bus_dmamap_t map; 587 bus_addr_t offset; 588 bus_size_t len; 589 int ops; 590 { 591 struct ebus_softc *sc = t->_cookie; 592 593 iommu_dvmamap_sync(t, sc->sc_parent->sc_is, map, offset, len, ops); 594 bus_dmamap_sync(t->_parent, map, offset, len, ops); 595 } 596 597 int 598 ebus_dmamem_alloc(t, size, alignment, boundary, segs, nsegs, rsegs, flags) 599 bus_dma_tag_t t; 600 bus_size_t size; 601 bus_size_t alignment; 602 bus_size_t boundary; 603 bus_dma_segment_t *segs; 604 int nsegs; 605 int *rsegs; 606 int flags; 607 { 608 struct ebus_softc *sc = t->_cookie; 609 610 return (iommu_dvmamem_alloc(t, sc->sc_parent->sc_is, size, alignment, 611 boundary, segs, nsegs, rsegs, flags)); 612 } 613 614 void 615 ebus_dmamem_free(t, segs, nsegs) 616 bus_dma_tag_t t; 617 bus_dma_segment_t *segs; 618 int nsegs; 619 { 620 struct ebus_softc *sc = t->_cookie; 621 622 iommu_dvmamem_free(t, sc->sc_parent->sc_is, segs, nsegs); 623 } 624 625 int 626 ebus_dmamem_map(t, segs, nsegs, size, kvap, flags) 627 bus_dma_tag_t t; 628 bus_dma_segment_t *segs; 629 int nsegs; 630 size_t size; 631 caddr_t *kvap; 632 int flags; 633 { 634 struct ebus_softc *sc = t->_cookie; 635 636 return (iommu_dvmamem_map(t, sc->sc_parent->sc_is, segs, nsegs, 637 size, kvap, flags)); 638 } 639 640 void 641 ebus_dmamem_unmap(t, kva, size) 642 bus_dma_tag_t t; 643 caddr_t kva; 644 size_t size; 645 { 646 struct ebus_softc *sc = t->_cookie; 647 648 iommu_dvmamem_unmap(t, sc->sc_parent->sc_is, kva, size); 649 } 650
Indexes created Sat Sep 27 22:09:54 GMT 2025