1 /* $NetBSD: promdev.c,v 1.22 2009/01/12 11:32:44 tsutsui Exp $ */ 2 3 /* 4 * Copyright (c) 1993 Paul Kranenburg 5 * Copyright (c) 1995 Gordon W. Ross 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Paul Kranenburg. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * Note: the `#ifndef BOOTXX' in here serve to queeze the code size 36 * of the 1st-stage boot program. 37 */ 38 #include <sys/param.h> 39 #include <sys/reboot.h> 40 #include <sys/systm.h> 41 #include <machine/oldmon.h> 42 #include <machine/promlib.h> 43 #include <machine/ctlreg.h> 44 #include <sparc/sparc/asm.h> 45 #include <machine/pte.h> 46 47 #include <lib/libsa/stand.h> 48 #include <lib/libsa/net.h> 49 #include <lib/libkern/libkern.h> 50 #include <sparc/stand/common/promdev.h> 51 52 #ifndef BOOTXX 53 #include <sys/disklabel.h> 54 #include <dev/sun/disklabel.h> 55 #include <dev/raidframe/raidframevar.h> 56 #endif 57 58 /* OBP V0-3 PROM vector */ 59 #define obpvec ((struct promvec *)romp) 60 61 int obp_close(struct open_file *); 62 int obp_strategy(void *, int, daddr_t, size_t, void *, size_t *); 63 int obp_v0_strategy(void *, int, daddr_t, size_t, void *, size_t *); 64 ssize_t obp_v0_xmit(struct promdata *, void *, size_t); 65 ssize_t obp_v0_recv(struct promdata *, void *, size_t); 66 int obp_v2_strategy(void *, int, daddr_t, size_t, void *, size_t *); 67 ssize_t obp_v2_xmit(struct promdata *, void *, size_t); 68 ssize_t obp_v2_recv(struct promdata *, void *, size_t); 69 int oldmon_close(struct open_file *); 70 int oldmon_strategy(void *, int, daddr_t, size_t, void *, size_t *); 71 void oldmon_iclose(struct saioreq *); 72 int oldmon_iopen(struct promdata *); 73 ssize_t oldmon_xmit(struct promdata *, void *, size_t); 74 ssize_t oldmon_recv(struct promdata *, void *, size_t); 75 76 static char *oldmon_mapin(u_long, int, int); 77 #ifndef BOOTXX 78 static char *mygetpropstring(int, char *); 79 static int getdevtype(int, char *); 80 #endif 81 82 extern struct fs_ops file_system_nfs[]; 83 extern struct fs_ops file_system_ufs[]; 84 85 #define null_devopen (void *)sparc_noop 86 #define null_devioctl (void *)sparc_noop 87 88 #if 0 89 struct devsw devsw[]; 90 int ndevs = (sizeof(devsw)/sizeof(devsw[0])); 91 #endif 92 93 struct devsw oldmon_devsw = 94 { "oldmon", oldmon_strategy, null_devopen, oldmon_close, null_devioctl }; 95 struct devsw obp_v0_devsw = 96 { "obp v0", obp_v0_strategy, null_devopen, obp_close, null_devioctl }; 97 struct devsw obp_v2_devsw = 98 { "obp v2", obp_v2_strategy, null_devopen, obp_close, null_devioctl }; 99 100 101 char prom_bootdevice[MAX_PROM_PATH]; 102 static int saveecho; 103 104 #ifndef BOOTXX 105 static daddr_t doffset = 0; 106 #endif 107 108 109 void 110 putchar(int c) 111 { 112 113 if (c == '\n') 114 prom_putchar('\r'); 115 prom_putchar(c); 116 } 117 118 void 119 _rtt(void) 120 { 121 122 prom_halt(); 123 } 124 125 int 126 devopen(struct open_file *f, const char *fname, char **file) 127 { 128 int error = 0, fd = 0; 129 struct promdata *pd; 130 #ifndef BOOTXX 131 char *partition; 132 int part = 0; 133 char rawpart[MAX_PROM_PATH]; 134 struct promdata *disk_pd; 135 char buf[DEV_BSIZE]; 136 struct disklabel *dlp; 137 size_t read; 138 #endif 139 140 pd = (struct promdata *)alloc(sizeof *pd); 141 f->f_devdata = (void *)pd; 142 143 switch (prom_version()) { 144 case PROM_OLDMON: 145 error = oldmon_iopen(pd); 146 #ifndef BOOTXX 147 pd->xmit = oldmon_xmit; 148 pd->recv = oldmon_recv; 149 #endif 150 f->f_dev = &oldmon_devsw; 151 saveecho = *romVectorPtr->echo; 152 *romVectorPtr->echo = 0; 153 break; 154 155 case PROM_OBP_V0: 156 case PROM_OBP_V2: 157 case PROM_OBP_V3: 158 case PROM_OPENFIRM: 159 if (*prom_bootdevice == '\0') { 160 error = ENXIO; 161 break; 162 } 163 fd = prom_open(prom_bootdevice); 164 if (fd == 0) { 165 error = ENXIO; 166 break; 167 } 168 pd->fd = fd; 169 switch (prom_version()) { 170 case PROM_OBP_V0: 171 #ifndef BOOTXX 172 pd->xmit = obp_v0_xmit; 173 pd->recv = obp_v0_recv; 174 #endif 175 f->f_dev = &obp_v0_devsw; 176 break; 177 case PROM_OBP_V2: 178 case PROM_OBP_V3: 179 case PROM_OPENFIRM: 180 #ifndef BOOTXX 181 pd->xmit = obp_v2_xmit; 182 pd->recv = obp_v2_recv; 183 #endif 184 f->f_dev = &obp_v2_devsw; 185 } 186 } 187 188 if (error) { 189 printf("Can't open device `%s'\n", prom_bootdevice); 190 return (error); 191 } 192 193 #ifdef BOOTXX 194 pd->devtype = DT_BLOCK; 195 #else /* BOOTXX */ 196 pd->devtype = getdevtype(fd, prom_bootdevice); 197 /* Assume type BYTE is a raw device */ 198 if (pd->devtype != DT_BYTE) 199 *file = (char *)fname; 200 201 if (pd->devtype == DT_NET) { 202 nfsys = 1; 203 memcpy(file_system, file_system_nfs, 204 sizeof(struct fs_ops) * nfsys); 205 if ((error = net_open(pd)) != 0) { 206 printf("Can't open NFS network connection on `%s'\n", 207 prom_bootdevice); 208 return (error); 209 } 210 } else { 211 memcpy(file_system, file_system_ufs, 212 sizeof(struct fs_ops) * nfsys); 213 214 #ifdef NOTDEF_DEBUG 215 printf("devopen: Checking disklabel for RAID partition\n"); 216 #endif 217 218 /* 219 * We need to read from the raw partition (i.e. the 220 * beginning of the disk in order to check the NetBSD 221 * disklabel to see if the boot partition is type RAID. 222 * 223 * For machines with prom_version() == PROM_OLDMON, we 224 * only handle boot from RAID for the first disk partition. 225 */ 226 disk_pd = (struct promdata *)alloc(sizeof *disk_pd); 227 memcpy(disk_pd, pd, sizeof(struct promdata)); 228 if (prom_version() != PROM_OLDMON) { 229 strcpy(rawpart, prom_bootdevice); 230 if ((partition = strchr(rawpart, ':')) != '\0' && 231 *++partition >= 'a' && 232 *partition <= 'a' + MAXPARTITIONS) { 233 part = *partition - 'a'; 234 *partition = RAW_PART + 'a'; 235 } else 236 strcat(rawpart, ":c"); 237 if ((disk_pd->fd = prom_open(rawpart)) == 0) 238 return 0; 239 } 240 error = f->f_dev->dv_strategy(disk_pd, F_READ, LABELSECTOR, 241 DEV_BSIZE, &buf, &read); 242 if (prom_version() != PROM_OLDMON) 243 prom_close(disk_pd->fd); 244 if (error || (read != DEV_BSIZE)) 245 return 0; 246 #ifdef NOTDEF_DEBUG 247 { 248 int x = 0; 249 char *p = (char *) buf; 250 251 printf(" Sector %d:\n", LABELSECTOR); 252 printf("00000000 "); 253 while (x < DEV_BSIZE) { 254 if (*p >= 0x00 && *p < 0x10) 255 printf("0%x ", *p & 0xff); 256 else 257 printf("%x ", *p & 0xff); 258 x++; 259 if (x && !(x % 8)) 260 printf(" "); 261 if (x && !(x % 16)) { 262 if(x < 0x100) 263 printf("\n000000%x ", x); 264 else 265 printf("\n00000%x ", x); 266 } 267 p++; 268 } 269 printf("\n"); 270 } 271 #endif 272 /* Check for NetBSD disk label. */ 273 dlp = (struct disklabel *) (buf + LABELOFFSET); 274 if (dlp->d_magic == DISKMAGIC && !dkcksum(dlp) && 275 dlp->d_partitions[part].p_fstype == FS_RAID) { 276 #ifdef NOTDEF_DEBUG 277 printf("devopen: found RAID partition, " 278 "adjusting offset to %d\n", RF_PROTECTED_SECTORS); 279 #endif 280 doffset = RF_PROTECTED_SECTORS; 281 } 282 } 283 #endif /* BOOTXX */ 284 return (0); 285 } 286 287 288 int 289 obp_v0_strategy(void *devdata, int flag, daddr_t dblk, size_t size, 290 void *buf, size_t *rsize) 291 { 292 int n, error = 0; 293 struct promdata *pd = (struct promdata *)devdata; 294 int fd = pd->fd; 295 296 #ifndef BOOTXX 297 dblk += doffset; 298 #endif 299 #ifdef DEBUG_PROM 300 printf("promstrategy: size=%d dblk=%d\n", size, dblk); 301 #endif 302 303 #define prom_bread(fd, nblk, dblk, buf) \ 304 (*obpvec->pv_v0devops.v0_rbdev)(fd, nblk, dblk, buf) 305 #define prom_bwrite(fd, nblk, dblk, buf) \ 306 (*obpvec->pv_v0devops.v0_wbdev)(fd, nblk, dblk, buf) 307 308 #ifndef BOOTXX /* We know it's a block device, so save some space */ 309 if (pd->devtype != DT_BLOCK) { 310 printf("promstrategy: non-block device not supported\n"); 311 error = EINVAL; 312 } 313 #endif 314 315 n = (flag == F_READ) 316 ? prom_bread(fd, btodb(size), dblk, buf) 317 : prom_bwrite(fd, btodb(size), dblk, buf); 318 319 *rsize = dbtob(n); 320 321 #ifdef DEBUG_PROM 322 printf("rsize = %x\n", *rsize); 323 #endif 324 return (error); 325 } 326 327 int 328 obp_v2_strategy(void *devdata, int flag, daddr_t dblk, size_t size, 329 void *buf, size_t *rsize) 330 { 331 int error = 0; 332 struct promdata *pd = (struct promdata *)devdata; 333 int fd = pd->fd; 334 335 #ifndef BOOTXX 336 dblk += doffset; 337 #endif 338 #ifdef DEBUG_PROM 339 printf("promstrategy: size=%d dblk=%d\n", size, dblk); 340 #endif 341 342 #ifndef BOOTXX /* We know it's a block device, so save some space */ 343 if (pd->devtype == DT_BLOCK) 344 #endif 345 prom_seek(fd, dbtob(dblk)); 346 347 *rsize = (flag == F_READ) 348 ? prom_read(fd, buf, size) 349 : prom_write(fd, buf, size); 350 351 #ifdef DEBUG_PROM 352 printf("rsize = %x\n", *rsize); 353 #endif 354 return (error); 355 } 356 357 /* 358 * On old-monitor machines, things work differently. 359 */ 360 int 361 oldmon_strategy(void *devdata, int flag, daddr_t dblk, size_t size, 362 void *buf, size_t *rsize) 363 { 364 struct promdata *pd = devdata; 365 struct saioreq *si; 366 struct om_boottable *ops; 367 char *dmabuf; 368 int si_flag; 369 size_t xcnt; 370 371 si = pd->si; 372 ops = si->si_boottab; 373 374 #ifndef BOOTXX 375 dblk += doffset; 376 #endif 377 #ifdef DEBUG_PROM 378 printf("prom_strategy: size=%d dblk=%d\n", size, dblk); 379 #endif 380 381 dmabuf = dvma_mapin(buf, size); 382 383 si->si_bn = dblk; 384 si->si_ma = dmabuf; 385 si->si_cc = size; 386 387 si_flag = (flag == F_READ) ? SAIO_F_READ : SAIO_F_WRITE; 388 xcnt = (*ops->b_strategy)(si, si_flag); 389 dvma_mapout(dmabuf, size); 390 391 #ifdef DEBUG_PROM 392 printf("disk_strategy: xcnt = %x\n", xcnt); 393 #endif 394 395 if (xcnt <= 0) 396 return (EIO); 397 398 *rsize = xcnt; 399 return (0); 400 } 401 402 int 403 obp_close(struct open_file *f) 404 { 405 struct promdata *pd = f->f_devdata; 406 register int fd = pd->fd; 407 408 #ifndef BOOTXX 409 if (pd->devtype == DT_NET) 410 net_close(pd); 411 #endif 412 prom_close(fd); 413 return 0; 414 } 415 416 int 417 oldmon_close(struct open_file *f) 418 { 419 struct promdata *pd = f->f_devdata; 420 421 #ifndef BOOTXX 422 if (pd->devtype == DT_NET) 423 net_close(pd); 424 #endif 425 oldmon_iclose(pd->si); 426 pd->si = NULL; 427 *romVectorPtr->echo = saveecho; /* Hmm, probably must go somewhere else */ 428 return 0; 429 } 430 431 #ifndef BOOTXX 432 ssize_t 433 obp_v0_xmit(struct promdata *pd, void *buf, size_t len) 434 { 435 436 return ((*obpvec->pv_v0devops.v0_wnet)(pd->fd, len, buf)); 437 } 438 439 ssize_t 440 obp_v2_xmit(struct promdata *pd, void *buf, size_t len) 441 { 442 443 return (prom_write(pd->fd, buf, len)); 444 } 445 446 ssize_t 447 obp_v0_recv(struct promdata *pd, void *buf, size_t len) 448 { 449 450 return ((*obpvec->pv_v0devops.v0_rnet)(pd->fd, len, buf)); 451 } 452 453 ssize_t 454 obp_v2_recv(struct promdata *pd, void *buf, size_t len) 455 { 456 int n; 457 458 n = prom_read(pd->fd, buf, len); 459 460 /* OBP V2 & V3 may return -2 */ 461 return (n == -2 ? 0 : n); 462 } 463 464 ssize_t 465 oldmon_xmit(struct promdata *pd, void *buf, size_t len) 466 { 467 struct saioreq *si; 468 struct saif *sif; 469 char *dmabuf; 470 int rv; 471 472 si = pd->si; 473 sif = si->si_sif; 474 if (sif == NULL) { 475 printf("xmit: not a network device\n"); 476 return (-1); 477 } 478 dmabuf = dvma_mapin(buf, len); 479 rv = sif->sif_xmit(si->si_devdata, dmabuf, len); 480 dvma_mapout(dmabuf, len); 481 482 return (ssize_t)(rv ? -1 : len); 483 } 484 485 ssize_t 486 oldmon_recv(struct promdata *pd, void *buf, size_t len) 487 { 488 struct saioreq *si; 489 struct saif *sif; 490 char *dmabuf; 491 int rv; 492 493 si = pd->si; 494 sif = si->si_sif; 495 dmabuf = dvma_mapin(buf, len); 496 rv = sif->sif_poll(si->si_devdata, dmabuf); 497 dvma_mapout(dmabuf, len); 498 499 return (ssize_t)rv; 500 } 501 502 int 503 getchar(void) 504 { 505 506 return (prom_getchar()); 507 } 508 509 satime_t 510 getsecs(void) 511 { 512 513 (void)prom_peekchar(); 514 return (prom_ticks() / 1000); 515 } 516 517 /* 518 * A number of well-known devices on sun4s. 519 */ 520 static struct dtab { 521 char *name; 522 int type; 523 } dtab[] = { 524 { "sd", DT_BLOCK }, 525 { "st", DT_BLOCK }, 526 { "xd", DT_BLOCK }, 527 { "xy", DT_BLOCK }, 528 { "fd", DT_BLOCK }, 529 { "le", DT_NET }, 530 { "ie", DT_NET }, 531 { NULL, 0 } 532 }; 533 534 int 535 getdevtype(int fd, char *name) 536 { 537 struct dtab *dp; 538 int node; 539 char *cp; 540 541 switch (prom_version()) { 542 case PROM_OLDMON: 543 case PROM_OBP_V0: 544 for (dp = dtab; dp->name; dp++) { 545 if (name[0] == dp->name[0] && 546 name[1] == dp->name[1]) 547 return (dp->type); 548 } 549 break; 550 551 case PROM_OBP_V2: 552 case PROM_OBP_V3: 553 case PROM_OPENFIRM: 554 node = prom_instance_to_package(fd); 555 cp = mygetpropstring(node, "device_type"); 556 if (strcmp(cp, "block") == 0) 557 return (DT_BLOCK); 558 else if (strcmp(cp, "network") == 0) 559 return (DT_NET); 560 else if (strcmp(cp, "byte") == 0) 561 return (DT_BYTE); 562 break; 563 } 564 return (0); 565 } 566 567 /* 568 * Return a string property. There is a (small) limit on the length; 569 * the string is fetched into a static buffer which is overwritten on 570 * subsequent calls. 571 */ 572 char * 573 mygetpropstring(int node, char *name) 574 { 575 int len; 576 static char buf[64]; 577 578 len = prom_proplen(node, name); 579 if (len > 0) 580 _prom_getprop(node, name, buf, len); 581 else 582 len = 0; 583 584 buf[len] = '\0'; /* usually unnecessary */ 585 return (buf); 586 } 587 #endif /* BOOTXX */ 588 589 /* 590 * Old monitor routines 591 */ 592 593 struct saioreq prom_si; 594 static int promdev_inuse; 595 596 int 597 oldmon_iopen(struct promdata *pd) 598 { 599 struct om_bootparam *bp; 600 struct om_boottable *ops; 601 struct devinfo *dip; 602 struct saioreq *si; 603 int error; 604 605 if (promdev_inuse) 606 return (EMFILE); 607 608 bp = *romVectorPtr->bootParam; 609 ops = bp->bootTable; 610 dip = ops->b_devinfo; 611 612 #ifdef DEBUG_PROM 613 printf("Boot device type: %s\n", ops->b_desc); 614 printf("d_devbytes=%d\n", dip->d_devbytes); 615 printf("d_dmabytes=%d\n", dip->d_dmabytes); 616 printf("d_localbytes=%d\n", dip->d_localbytes); 617 printf("d_stdcount=%d\n", dip->d_stdcount); 618 printf("d_stdaddrs[%d]=%x\n", bp->ctlrNum, dip->d_stdaddrs[bp->ctlrNum]); 619 printf("d_devtype=%d\n", dip->d_devtype); 620 printf("d_maxiobytes=%d\n", dip->d_maxiobytes); 621 #endif 622 623 dvma_init(); 624 625 si = &prom_si; 626 memset(si, 0, sizeof(*si)); 627 si->si_boottab = ops; 628 si->si_ctlr = bp->ctlrNum; 629 si->si_unit = bp->unitNum; 630 si->si_boff = bp->partNum; 631 632 if (si->si_ctlr > dip->d_stdcount) 633 return (ECTLR); 634 635 if (dip->d_devbytes) { 636 si->si_devaddr = oldmon_mapin(dip->d_stdaddrs[si->si_ctlr], 637 dip->d_devbytes, dip->d_devtype); 638 #ifdef DEBUG_PROM 639 printf("prom_iopen: devaddr=0x%x pte=0x%x\n", 640 si->si_devaddr, 641 getpte4((u_long)si->si_devaddr & ~PGOFSET)); 642 #endif 643 } 644 645 if (dip->d_dmabytes) { 646 si->si_dmaaddr = dvma_alloc(dip->d_dmabytes); 647 #ifdef DEBUG_PROM 648 printf("prom_iopen: dmaaddr=0x%x\n", si->si_dmaaddr); 649 #endif 650 } 651 652 if (dip->d_localbytes) { 653 si->si_devdata = alloc(dip->d_localbytes); 654 #ifdef DEBUG_PROM 655 printf("prom_iopen: devdata=0x%x\n", si->si_devdata); 656 #endif 657 } 658 659 /* OK, call the PROM device open routine. */ 660 error = (*ops->b_open)(si); 661 if (error != 0) { 662 printf("prom_iopen: \"%s\" error=%d\n", ops->b_desc, error); 663 return (ENXIO); 664 } 665 #ifdef DEBUG_PROM 666 printf("prom_iopen: succeeded, error=%d\n", error); 667 #endif 668 669 pd->si = si; 670 promdev_inuse++; 671 return (0); 672 } 673 674 void 675 oldmon_iclose(struct saioreq *si) 676 { 677 struct om_boottable *ops; 678 struct devinfo *dip; 679 680 if (promdev_inuse == 0) 681 return; 682 683 ops = si->si_boottab; 684 dip = ops->b_devinfo; 685 686 (*ops->b_close)(si); 687 688 if (si->si_dmaaddr) { 689 dvma_free(si->si_dmaaddr, dip->d_dmabytes); 690 si->si_dmaaddr = NULL; 691 } 692 693 promdev_inuse = 0; 694 } 695 696 static struct mapinfo { 697 int maptype; 698 int pgtype; 699 int base; 700 } oldmon_mapinfo[] = { 701 #define PG_COMMON (PG_V|PG_W|PG_S|PG_NC) 702 { MAP_MAINMEM, PG_OBMEM | PG_COMMON, 0 }, 703 { MAP_OBIO, PG_OBIO | PG_COMMON, 0 }, 704 { MAP_MBMEM, PG_VME16 | PG_COMMON, 0xFF000000 }, 705 { MAP_MBIO, PG_VME16 | PG_COMMON, 0xFFFF0000 }, 706 { MAP_VME16A16D, PG_VME16 | PG_COMMON, 0xFFFF0000 }, 707 { MAP_VME16A32D, PG_VME32 | PG_COMMON, 0xFFFF0000 }, 708 { MAP_VME24A16D, PG_VME16 | PG_COMMON, 0xFF000000 }, 709 { MAP_VME24A32D, PG_VME32 | PG_COMMON, 0xFF000000 }, 710 { MAP_VME32A16D, PG_VME16 | PG_COMMON, 0 }, 711 { MAP_VME32A32D, PG_VME32 | PG_COMMON, 0 }, 712 }; 713 static int oldmon_mapinfo_cnt = 714 sizeof(oldmon_mapinfo) / sizeof(oldmon_mapinfo[0]); 715 716 /* The virtual address we will use for PROM device mappings. */ 717 static u_long prom_devmap = MONSHORTSEG; 718 719 static char * 720 oldmon_mapin(u_long physaddr, int length, int maptype) 721 { 722 int i, pa, pte, va; 723 724 if (length > (4*NBPG)) 725 panic("oldmon_mapin: length=%d", length); 726 727 for (i = 0; i < oldmon_mapinfo_cnt; i++) 728 if (oldmon_mapinfo[i].maptype == maptype) 729 goto found; 730 panic("oldmon_mapin: invalid maptype %d", maptype); 731 732 found: 733 pte = oldmon_mapinfo[i].pgtype; 734 pa = oldmon_mapinfo[i].base; 735 pa += physaddr; 736 pte |= ((pa >> SUN4_PGSHIFT) & PG_PFNUM); 737 738 va = prom_devmap; 739 do { 740 setpte4(va, pte); 741 va += NBPG; 742 pte += 1; 743 length -= NBPG; 744 } while (length > 0); 745 return ((char*)(prom_devmap | (pa & PGOFSET))); 746 } 747