machdep.c revision 1.234
1 /* $NetBSD: machdep.c,v 1.234 2001/04/19 17:48:46 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 1999, 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center and by Chris G. Demetriou. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /* 41 * Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University. 42 * All rights reserved. 43 * 44 * Author: Chris G. Demetriou 45 * 46 * Permission to use, copy, modify and distribute this software and 47 * its documentation is hereby granted, provided that both the copyright 48 * notice and this permission notice appear in all copies of the 49 * software, derivative works or modified versions, and any portions 50 * thereof, and that both notices appear in supporting documentation. 51 * 52 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 53 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 54 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 55 * 56 * Carnegie Mellon requests users of this software to return to 57 * 58 * Software Distribution Coordinator or Software.Distribution (at) CS.CMU.EDU 59 * School of Computer Science 60 * Carnegie Mellon University 61 * Pittsburgh PA 15213-3890 62 * 63 * any improvements or extensions that they make and grant Carnegie the 64 * rights to redistribute these changes. 65 */ 66 67 #include "opt_ddb.h" 68 #include "opt_multiprocessor.h" 69 #include "opt_dec_3000_300.h" 70 #include "opt_dec_3000_500.h" 71 #include "opt_compat_osf1.h" 72 #include "opt_compat_netbsd.h" 73 74 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 75 76 __KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.234 2001/04/19 17:48:46 thorpej Exp $"); 77 78 #include <sys/param.h> 79 #include <sys/systm.h> 80 #include <sys/signalvar.h> 81 #include <sys/kernel.h> 82 #include <sys/map.h> 83 #include <sys/proc.h> 84 #include <sys/sched.h> 85 #include <sys/buf.h> 86 #include <sys/reboot.h> 87 #include <sys/device.h> 88 #include <sys/file.h> 89 #include <sys/malloc.h> 90 #include <sys/mbuf.h> 91 #include <sys/mman.h> 92 #include <sys/msgbuf.h> 93 #include <sys/ioctl.h> 94 #include <sys/tty.h> 95 #include <sys/user.h> 96 #include <sys/exec.h> 97 #include <sys/exec_ecoff.h> 98 #include <sys/core.h> 99 #include <sys/kcore.h> 100 #include <machine/kcore.h> 101 102 #include <sys/mount.h> 103 #include <sys/syscallargs.h> 104 105 #include <uvm/uvm_extern.h> 106 #include <sys/sysctl.h> 107 108 #include <dev/cons.h> 109 110 #include <machine/autoconf.h> 111 #include <machine/cpu.h> 112 #include <machine/reg.h> 113 #include <machine/rpb.h> 114 #include <machine/prom.h> 115 #include <machine/conf.h> 116 #include <machine/ieeefp.h> 117 118 #ifdef DDB 119 #include <machine/db_machdep.h> 120 #include <ddb/db_access.h> 121 #include <ddb/db_sym.h> 122 #include <ddb/db_extern.h> 123 #include <ddb/db_interface.h> 124 #endif 125 126 #ifdef KGDB 127 #include <sys/kgdb.h> 128 #endif 129 130 #ifdef DEBUG 131 #include <machine/sigdebug.h> 132 #endif 133 134 #include <machine/alpha.h> 135 136 vm_map_t exec_map = NULL; 137 vm_map_t mb_map = NULL; 138 vm_map_t phys_map = NULL; 139 140 caddr_t msgbufaddr; 141 142 int maxmem; /* max memory per process */ 143 144 int totalphysmem; /* total amount of physical memory in system */ 145 int physmem; /* physical memory used by NetBSD + some rsvd */ 146 int resvmem; /* amount of memory reserved for PROM */ 147 int unusedmem; /* amount of memory for OS that we don't use */ 148 int unknownmem; /* amount of memory with an unknown use */ 149 150 int cputype; /* system type, from the RPB */ 151 152 int bootdev_debug = 0; /* patchable, or from DDB */ 153 154 /* 155 * XXX We need an address to which we can assign things so that they 156 * won't be optimized away because we didn't use the value. 157 */ 158 u_int32_t no_optimize; 159 160 /* the following is used externally (sysctl_hw) */ 161 char machine[] = MACHINE; /* from <machine/param.h> */ 162 char machine_arch[] = MACHINE_ARCH; /* from <machine/param.h> */ 163 char cpu_model[128]; 164 165 struct user *proc0paddr; 166 167 /* Number of machine cycles per microsecond */ 168 u_int64_t cycles_per_usec; 169 170 /* number of cpus in the box. really! */ 171 int ncpus; 172 173 struct bootinfo_kernel bootinfo; 174 175 /* For built-in TCDS */ 176 #if defined(DEC_3000_300) || defined(DEC_3000_500) 177 u_int8_t dec_3000_scsiid[2], dec_3000_scsifast[2]; 178 #endif 179 180 struct platform platform; 181 182 #ifdef DDB 183 /* start and end of kernel symbol table */ 184 void *ksym_start, *ksym_end; 185 #endif 186 187 /* for cpu_sysctl() */ 188 int alpha_unaligned_print = 1; /* warn about unaligned accesses */ 189 int alpha_unaligned_fix = 1; /* fix up unaligned accesses */ 190 int alpha_unaligned_sigbus = 0; /* don't SIGBUS on fixed-up accesses */ 191 192 /* 193 * XXX This should be dynamically sized, but we have the chicken-egg problem! 194 * XXX it should also be larger than it is, because not all of the mddt 195 * XXX clusters end up being used for VM. 196 */ 197 phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX]; /* low size bits overloaded */ 198 int mem_cluster_cnt; 199 200 int cpu_dump __P((void)); 201 int cpu_dumpsize __P((void)); 202 u_long cpu_dump_mempagecnt __P((void)); 203 void dumpsys __P((void)); 204 void identifycpu __P((void)); 205 void printregs __P((struct reg *)); 206 207 void 208 alpha_init(pfn, ptb, bim, bip, biv) 209 u_long pfn; /* first free PFN number */ 210 u_long ptb; /* PFN of current level 1 page table */ 211 u_long bim; /* bootinfo magic */ 212 u_long bip; /* bootinfo pointer */ 213 u_long biv; /* bootinfo version */ 214 { 215 extern char kernel_text[], _end[]; 216 struct mddt *mddtp; 217 struct mddt_cluster *memc; 218 int i, mddtweird; 219 struct vm_physseg *vps; 220 vaddr_t kernstart, kernend; 221 paddr_t kernstartpfn, kernendpfn, pfn0, pfn1; 222 vsize_t size; 223 cpuid_t cpu_id; 224 struct cpu_info *ci; 225 char *p; 226 caddr_t v; 227 const char *bootinfo_msg; 228 const struct cpuinit *c; 229 230 /* NO OUTPUT ALLOWED UNTIL FURTHER NOTICE */ 231 232 /* 233 * Turn off interrupts (not mchecks) and floating point. 234 * Make sure the instruction and data streams are consistent. 235 */ 236 (void)alpha_pal_swpipl(ALPHA_PSL_IPL_HIGH); 237 alpha_pal_wrfen(0); 238 ALPHA_TBIA(); 239 alpha_pal_imb(); 240 241 cpu_id = cpu_number(); 242 243 #if defined(MULTIPROCESSOR) 244 /* 245 * Set our SysValue to the address of our cpu_info structure. 246 * Secondary processors do this in their spinup trampoline. 247 */ 248 alpha_pal_wrval((u_long)&cpu_info[cpu_id]); 249 #endif 250 251 ci = curcpu(); 252 ci->ci_cpuid = cpu_id; 253 254 /* 255 * Get critical system information (if possible, from the 256 * information provided by the boot program). 257 */ 258 bootinfo_msg = NULL; 259 if (bim == BOOTINFO_MAGIC) { 260 if (biv == 0) { /* backward compat */ 261 biv = *(u_long *)bip; 262 bip += 8; 263 } 264 switch (biv) { 265 case 1: { 266 struct bootinfo_v1 *v1p = (struct bootinfo_v1 *)bip; 267 268 bootinfo.ssym = v1p->ssym; 269 bootinfo.esym = v1p->esym; 270 /* hwrpb may not be provided by boot block in v1 */ 271 if (v1p->hwrpb != NULL) { 272 bootinfo.hwrpb_phys = 273 ((struct rpb *)v1p->hwrpb)->rpb_phys; 274 bootinfo.hwrpb_size = v1p->hwrpbsize; 275 } else { 276 bootinfo.hwrpb_phys = 277 ((struct rpb *)HWRPB_ADDR)->rpb_phys; 278 bootinfo.hwrpb_size = 279 ((struct rpb *)HWRPB_ADDR)->rpb_size; 280 } 281 bcopy(v1p->boot_flags, bootinfo.boot_flags, 282 min(sizeof v1p->boot_flags, 283 sizeof bootinfo.boot_flags)); 284 bcopy(v1p->booted_kernel, bootinfo.booted_kernel, 285 min(sizeof v1p->booted_kernel, 286 sizeof bootinfo.booted_kernel)); 287 /* booted dev not provided in bootinfo */ 288 init_prom_interface((struct rpb *) 289 ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys)); 290 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 291 sizeof bootinfo.booted_dev); 292 break; 293 } 294 default: 295 bootinfo_msg = "unknown bootinfo version"; 296 goto nobootinfo; 297 } 298 } else { 299 bootinfo_msg = "boot program did not pass bootinfo"; 300 nobootinfo: 301 bootinfo.ssym = (u_long)_end; 302 bootinfo.esym = (u_long)_end; 303 bootinfo.hwrpb_phys = ((struct rpb *)HWRPB_ADDR)->rpb_phys; 304 bootinfo.hwrpb_size = ((struct rpb *)HWRPB_ADDR)->rpb_size; 305 init_prom_interface((struct rpb *)HWRPB_ADDR); 306 prom_getenv(PROM_E_BOOTED_OSFLAGS, bootinfo.boot_flags, 307 sizeof bootinfo.boot_flags); 308 prom_getenv(PROM_E_BOOTED_FILE, bootinfo.booted_kernel, 309 sizeof bootinfo.booted_kernel); 310 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 311 sizeof bootinfo.booted_dev); 312 } 313 314 /* 315 * Initialize the kernel's mapping of the RPB. It's needed for 316 * lots of things. 317 */ 318 hwrpb = (struct rpb *)ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys); 319 320 #if defined(DEC_3000_300) || defined(DEC_3000_500) 321 if (hwrpb->rpb_type == ST_DEC_3000_300 || 322 hwrpb->rpb_type == ST_DEC_3000_500) { 323 prom_getenv(PROM_E_SCSIID, dec_3000_scsiid, 324 sizeof(dec_3000_scsiid)); 325 prom_getenv(PROM_E_SCSIFAST, dec_3000_scsifast, 326 sizeof(dec_3000_scsifast)); 327 } 328 #endif 329 330 /* 331 * Remember how many cycles there are per microsecond, 332 * so that we can use delay(). Round up, for safety. 333 */ 334 cycles_per_usec = (hwrpb->rpb_cc_freq + 999999) / 1000000; 335 336 /* 337 * Initalize the (temporary) bootstrap console interface, so 338 * we can use printf until the VM system starts being setup. 339 * The real console is initialized before then. 340 */ 341 init_bootstrap_console(); 342 343 /* OUTPUT NOW ALLOWED */ 344 345 /* delayed from above */ 346 if (bootinfo_msg) 347 printf("WARNING: %s (0x%lx, 0x%lx, 0x%lx)\n", 348 bootinfo_msg, bim, bip, biv); 349 350 /* Initialize the trap vectors on the primary processor. */ 351 trap_init(); 352 353 /* 354 * Find out what hardware we're on, and do basic initialization. 355 */ 356 cputype = hwrpb->rpb_type; 357 if (cputype < 0) { 358 /* 359 * At least some white-box systems have SRM which 360 * reports a systype that's the negative of their 361 * blue-box counterpart. 362 */ 363 cputype = -cputype; 364 } 365 c = platform_lookup(cputype); 366 if (c == NULL) { 367 platform_not_supported(); 368 /* NOTREACHED */ 369 } 370 (*c->init)(); 371 strcpy(cpu_model, platform.model); 372 373 /* 374 * Initalize the real console, so that the bootstrap console is 375 * no longer necessary. 376 */ 377 (*platform.cons_init)(); 378 379 #ifdef DIAGNOSTIC 380 /* Paranoid sanity checking */ 381 382 /* We should always be running on the primary. */ 383 assert(hwrpb->rpb_primary_cpu_id == cpu_id); 384 385 /* 386 * On single-CPU systypes, the primary should always be CPU 0, 387 * except on Alpha 8200 systems where the CPU id is related 388 * to the VID, which is related to the Turbo Laser node id. 389 */ 390 if (cputype != ST_DEC_21000) 391 assert(hwrpb->rpb_primary_cpu_id == 0); 392 #endif 393 394 /* NO MORE FIRMWARE ACCESS ALLOWED */ 395 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 396 /* 397 * XXX (unless _PMAP_MAY_USE_PROM_CONSOLE is defined and 398 * XXX pmap_uses_prom_console() evaluates to non-zero.) 399 */ 400 #endif 401 402 /* 403 * find out this system's page size 404 */ 405 PAGE_SIZE = hwrpb->rpb_page_size; 406 if (PAGE_SIZE != 8192) 407 panic("page size %d != 8192?!", PAGE_SIZE); 408 409 /* 410 * Initialize PAGE_SIZE-dependent variables. 411 */ 412 uvm_setpagesize(); 413 414 /* 415 * Find the beginning and end of the kernel (and leave a 416 * bit of space before the beginning for the bootstrap 417 * stack). 418 */ 419 kernstart = trunc_page((vaddr_t)kernel_text) - 2 * PAGE_SIZE; 420 #ifdef DDB 421 ksym_start = (void *)bootinfo.ssym; 422 ksym_end = (void *)bootinfo.esym; 423 kernend = (vaddr_t)round_page((vaddr_t)ksym_end); 424 #else 425 kernend = (vaddr_t)round_page((vaddr_t)_end); 426 #endif 427 428 kernstartpfn = atop(ALPHA_K0SEG_TO_PHYS(kernstart)); 429 kernendpfn = atop(ALPHA_K0SEG_TO_PHYS(kernend)); 430 431 /* 432 * Find out how much memory is available, by looking at 433 * the memory cluster descriptors. This also tries to do 434 * its best to detect things things that have never been seen 435 * before... 436 */ 437 mddtp = (struct mddt *)(((caddr_t)hwrpb) + hwrpb->rpb_memdat_off); 438 439 /* MDDT SANITY CHECKING */ 440 mddtweird = 0; 441 if (mddtp->mddt_cluster_cnt < 2) { 442 mddtweird = 1; 443 printf("WARNING: weird number of mem clusters: %lu\n", 444 mddtp->mddt_cluster_cnt); 445 } 446 447 #if 0 448 printf("Memory cluster count: %d\n", mddtp->mddt_cluster_cnt); 449 #endif 450 451 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 452 memc = &mddtp->mddt_clusters[i]; 453 #if 0 454 printf("MEMC %d: pfn 0x%lx cnt 0x%lx usage 0x%lx\n", i, 455 memc->mddt_pfn, memc->mddt_pg_cnt, memc->mddt_usage); 456 #endif 457 totalphysmem += memc->mddt_pg_cnt; 458 if (mem_cluster_cnt < VM_PHYSSEG_MAX) { /* XXX */ 459 mem_clusters[mem_cluster_cnt].start = 460 ptoa(memc->mddt_pfn); 461 mem_clusters[mem_cluster_cnt].size = 462 ptoa(memc->mddt_pg_cnt); 463 if (memc->mddt_usage & MDDT_mbz || 464 memc->mddt_usage & MDDT_NONVOLATILE || /* XXX */ 465 memc->mddt_usage & MDDT_PALCODE) 466 mem_clusters[mem_cluster_cnt].size |= 467 PROT_READ; 468 else 469 mem_clusters[mem_cluster_cnt].size |= 470 PROT_READ | PROT_WRITE | PROT_EXEC; 471 mem_cluster_cnt++; 472 } 473 474 if (memc->mddt_usage & MDDT_mbz) { 475 mddtweird = 1; 476 printf("WARNING: mem cluster %d has weird " 477 "usage 0x%lx\n", i, memc->mddt_usage); 478 unknownmem += memc->mddt_pg_cnt; 479 continue; 480 } 481 if (memc->mddt_usage & MDDT_NONVOLATILE) { 482 /* XXX should handle these... */ 483 printf("WARNING: skipping non-volatile mem " 484 "cluster %d\n", i); 485 unusedmem += memc->mddt_pg_cnt; 486 continue; 487 } 488 if (memc->mddt_usage & MDDT_PALCODE) { 489 resvmem += memc->mddt_pg_cnt; 490 continue; 491 } 492 493 /* 494 * We have a memory cluster available for system 495 * software use. We must determine if this cluster 496 * holds the kernel. 497 */ 498 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 499 /* 500 * XXX If the kernel uses the PROM console, we only use the 501 * XXX memory after the kernel in the first system segment, 502 * XXX to avoid clobbering prom mapping, data, etc. 503 */ 504 if (!pmap_uses_prom_console() || physmem == 0) { 505 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 506 physmem += memc->mddt_pg_cnt; 507 pfn0 = memc->mddt_pfn; 508 pfn1 = memc->mddt_pfn + memc->mddt_pg_cnt; 509 if (pfn0 <= kernstartpfn && kernendpfn <= pfn1) { 510 /* 511 * Must compute the location of the kernel 512 * within the segment. 513 */ 514 #if 0 515 printf("Cluster %d contains kernel\n", i); 516 #endif 517 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 518 if (!pmap_uses_prom_console()) { 519 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 520 if (pfn0 < kernstartpfn) { 521 /* 522 * There is a chunk before the kernel. 523 */ 524 #if 0 525 printf("Loading chunk before kernel: " 526 "0x%lx / 0x%lx\n", pfn0, kernstartpfn); 527 #endif 528 uvm_page_physload(pfn0, kernstartpfn, 529 pfn0, kernstartpfn, VM_FREELIST_DEFAULT); 530 } 531 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 532 } 533 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 534 if (kernendpfn < pfn1) { 535 /* 536 * There is a chunk after the kernel. 537 */ 538 #if 0 539 printf("Loading chunk after kernel: " 540 "0x%lx / 0x%lx\n", kernendpfn, pfn1); 541 #endif 542 uvm_page_physload(kernendpfn, pfn1, 543 kernendpfn, pfn1, VM_FREELIST_DEFAULT); 544 } 545 } else { 546 /* 547 * Just load this cluster as one chunk. 548 */ 549 #if 0 550 printf("Loading cluster %d: 0x%lx / 0x%lx\n", i, 551 pfn0, pfn1); 552 #endif 553 uvm_page_physload(pfn0, pfn1, pfn0, pfn1, 554 VM_FREELIST_DEFAULT); 555 } 556 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 557 } 558 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 559 } 560 561 /* 562 * Dump out the MDDT if it looks odd... 563 */ 564 if (mddtweird) { 565 printf("\n"); 566 printf("complete memory cluster information:\n"); 567 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 568 printf("mddt %d:\n", i); 569 printf("\tpfn %lx\n", 570 mddtp->mddt_clusters[i].mddt_pfn); 571 printf("\tcnt %lx\n", 572 mddtp->mddt_clusters[i].mddt_pg_cnt); 573 printf("\ttest %lx\n", 574 mddtp->mddt_clusters[i].mddt_pg_test); 575 printf("\tbva %lx\n", 576 mddtp->mddt_clusters[i].mddt_v_bitaddr); 577 printf("\tbpa %lx\n", 578 mddtp->mddt_clusters[i].mddt_p_bitaddr); 579 printf("\tbcksum %lx\n", 580 mddtp->mddt_clusters[i].mddt_bit_cksum); 581 printf("\tusage %lx\n", 582 mddtp->mddt_clusters[i].mddt_usage); 583 } 584 printf("\n"); 585 } 586 587 if (totalphysmem == 0) 588 panic("can't happen: system seems to have no memory!"); 589 maxmem = physmem; 590 #if 0 591 printf("totalphysmem = %d\n", totalphysmem); 592 printf("physmem = %d\n", physmem); 593 printf("resvmem = %d\n", resvmem); 594 printf("unusedmem = %d\n", unusedmem); 595 printf("unknownmem = %d\n", unknownmem); 596 #endif 597 598 /* 599 * Initialize error message buffer (at end of core). 600 */ 601 { 602 vsize_t sz = (vsize_t)round_page(MSGBUFSIZE); 603 vsize_t reqsz = sz; 604 605 vps = &vm_physmem[vm_nphysseg - 1]; 606 607 /* shrink so that it'll fit in the last segment */ 608 if ((vps->avail_end - vps->avail_start) < atop(sz)) 609 sz = ptoa(vps->avail_end - vps->avail_start); 610 611 vps->end -= atop(sz); 612 vps->avail_end -= atop(sz); 613 msgbufaddr = (caddr_t) ALPHA_PHYS_TO_K0SEG(ptoa(vps->end)); 614 initmsgbuf(msgbufaddr, sz); 615 616 /* Remove the last segment if it now has no pages. */ 617 if (vps->start == vps->end) 618 vm_nphysseg--; 619 620 /* warn if the message buffer had to be shrunk */ 621 if (sz != reqsz) 622 printf("WARNING: %ld bytes not available for msgbuf " 623 "in last cluster (%ld used)\n", reqsz, sz); 624 625 } 626 627 /* 628 * Init mapping for u page(s) for proc 0 629 */ 630 proc0.p_addr = proc0paddr = 631 (struct user *)pmap_steal_memory(UPAGES * PAGE_SIZE, NULL, NULL); 632 633 /* 634 * Allocate space for system data structures. These data structures 635 * are allocated here instead of cpu_startup() because physical 636 * memory is directly addressable. We don't have to map these into 637 * virtual address space. 638 */ 639 size = (vsize_t)allocsys(NULL, NULL); 640 v = (caddr_t)pmap_steal_memory(size, NULL, NULL); 641 if ((allocsys(v, NULL) - v) != size) 642 panic("alpha_init: table size inconsistency"); 643 644 /* 645 * Initialize the virtual memory system, and set the 646 * page table base register in proc 0's PCB. 647 */ 648 pmap_bootstrap(ALPHA_PHYS_TO_K0SEG(ptb << PGSHIFT), 649 hwrpb->rpb_max_asn, hwrpb->rpb_pcs_cnt); 650 651 /* 652 * Initialize the rest of proc 0's PCB, and cache its physical 653 * address. 654 */ 655 proc0.p_md.md_pcbpaddr = 656 (struct pcb *)ALPHA_K0SEG_TO_PHYS((vaddr_t)&proc0paddr->u_pcb); 657 658 /* 659 * Set the kernel sp, reserving space for an (empty) trapframe, 660 * and make proc0's trapframe pointer point to it for sanity. 661 */ 662 proc0paddr->u_pcb.pcb_hw.apcb_ksp = 663 (u_int64_t)proc0paddr + USPACE - sizeof(struct trapframe); 664 proc0.p_md.md_tf = 665 (struct trapframe *)proc0paddr->u_pcb.pcb_hw.apcb_ksp; 666 667 /* 668 * Initialize the primary CPU's idle PCB to proc0's. In a 669 * MULTIPROCESSOR configuration, each CPU will later get 670 * its own idle PCB when autoconfiguration runs. 671 */ 672 ci->ci_idle_pcb = &proc0paddr->u_pcb; 673 ci->ci_idle_pcb_paddr = (u_long)proc0.p_md.md_pcbpaddr; 674 675 /* Indicate that proc0 has a CPU. */ 676 proc0.p_cpu = ci; 677 678 /* 679 * Look at arguments passed to us and compute boothowto. 680 */ 681 682 boothowto = RB_SINGLE; 683 #ifdef KADB 684 boothowto |= RB_KDB; 685 #endif 686 for (p = bootinfo.boot_flags; p && *p != '\0'; p++) { 687 /* 688 * Note that we'd really like to differentiate case here, 689 * but the Alpha AXP Architecture Reference Manual 690 * says that we shouldn't. 691 */ 692 switch (*p) { 693 case 'a': /* autoboot */ 694 case 'A': 695 boothowto &= ~RB_SINGLE; 696 break; 697 698 #ifdef DEBUG 699 case 'c': /* crash dump immediately after autoconfig */ 700 case 'C': 701 boothowto |= RB_DUMP; 702 break; 703 #endif 704 705 #if defined(KGDB) || defined(DDB) 706 case 'd': /* break into the kernel debugger ASAP */ 707 case 'D': 708 boothowto |= RB_KDB; 709 break; 710 #endif 711 712 case 'h': /* always halt, never reboot */ 713 case 'H': 714 boothowto |= RB_HALT; 715 break; 716 717 #if 0 718 case 'm': /* mini root present in memory */ 719 case 'M': 720 boothowto |= RB_MINIROOT; 721 break; 722 #endif 723 724 case 'n': /* askname */ 725 case 'N': 726 boothowto |= RB_ASKNAME; 727 break; 728 729 case 's': /* single-user (default, supported for sanity) */ 730 case 'S': 731 boothowto |= RB_SINGLE; 732 break; 733 734 case 'q': /* quiet boot */ 735 case 'Q': 736 boothowto |= AB_QUIET; 737 break; 738 739 case 'v': /* verbose boot */ 740 case 'V': 741 boothowto |= AB_VERBOSE; 742 break; 743 744 case '-': 745 /* 746 * Just ignore this. It's not required, but it's 747 * common for it to be passed regardless. 748 */ 749 break; 750 751 default: 752 printf("Unrecognized boot flag '%c'.\n", *p); 753 break; 754 } 755 } 756 757 758 /* 759 * Figure out the number of cpus in the box, from RPB fields. 760 * Really. We mean it. 761 */ 762 for (i = 0; i < hwrpb->rpb_pcs_cnt; i++) { 763 struct pcs *pcsp; 764 765 pcsp = LOCATE_PCS(hwrpb, i); 766 if ((pcsp->pcs_flags & PCS_PP) != 0) 767 ncpus++; 768 } 769 770 /* 771 * Initialize debuggers, and break into them if appropriate. 772 */ 773 #ifdef DDB 774 ddb_init((int)((u_int64_t)ksym_end - (u_int64_t)ksym_start), 775 ksym_start, ksym_end); 776 #endif 777 778 if (boothowto & RB_KDB) { 779 #if defined(KGDB) 780 kgdb_debug_init = 1; 781 kgdb_connect(1); 782 #elif defined(DDB) 783 Debugger(); 784 #endif 785 } 786 787 /* 788 * Figure out our clock frequency, from RPB fields. 789 */ 790 hz = hwrpb->rpb_intr_freq >> 12; 791 if (!(60 <= hz && hz <= 10240)) { 792 hz = 1024; 793 #ifdef DIAGNOSTIC 794 printf("WARNING: unbelievable rpb_intr_freq: %ld (%d hz)\n", 795 hwrpb->rpb_intr_freq, hz); 796 #endif 797 } 798 } 799 800 void 801 consinit() 802 { 803 804 /* 805 * Everything related to console initialization is done 806 * in alpha_init(). 807 */ 808 #if defined(DIAGNOSTIC) && defined(_PMAP_MAY_USE_PROM_CONSOLE) 809 printf("consinit: %susing prom console\n", 810 pmap_uses_prom_console() ? "" : "not "); 811 #endif 812 } 813 814 #include "pckbc.h" 815 #include "pckbd.h" 816 #if (NPCKBC > 0) && (NPCKBD == 0) 817 818 #include <dev/ic/pckbcvar.h> 819 820 /* 821 * This is called by the pbkbc driver if no pckbd is configured. 822 * On the i386, it is used to glue in the old, deprecated console 823 * code. On the Alpha, it does nothing. 824 */ 825 int 826 pckbc_machdep_cnattach(kbctag, kbcslot) 827 pckbc_tag_t kbctag; 828 pckbc_slot_t kbcslot; 829 { 830 831 return (ENXIO); 832 } 833 #endif /* NPCKBC > 0 && NPCKBD == 0 */ 834 835 void 836 cpu_startup() 837 { 838 register unsigned i; 839 int base, residual; 840 vaddr_t minaddr, maxaddr; 841 vsize_t size; 842 char pbuf[9]; 843 #if defined(DEBUG) 844 extern int pmapdebug; 845 int opmapdebug = pmapdebug; 846 847 pmapdebug = 0; 848 #endif 849 850 /* 851 * Good {morning,afternoon,evening,night}. 852 */ 853 printf(version); 854 identifycpu(); 855 format_bytes(pbuf, sizeof(pbuf), ptoa(totalphysmem)); 856 printf("total memory = %s\n", pbuf); 857 format_bytes(pbuf, sizeof(pbuf), ptoa(resvmem)); 858 printf("(%s reserved for PROM, ", pbuf); 859 format_bytes(pbuf, sizeof(pbuf), ptoa(physmem)); 860 printf("%s used by NetBSD)\n", pbuf); 861 if (unusedmem) { 862 format_bytes(pbuf, sizeof(pbuf), ptoa(unusedmem)); 863 printf("WARNING: unused memory = %s\n", pbuf); 864 } 865 if (unknownmem) { 866 format_bytes(pbuf, sizeof(pbuf), ptoa(unknownmem)); 867 printf("WARNING: %s of memory with unknown purpose\n", pbuf); 868 } 869 870 /* 871 * Allocate virtual address space for file I/O buffers. 872 * Note they are different than the array of headers, 'buf', 873 * and usually occupy more virtual memory than physical. 874 */ 875 size = MAXBSIZE * nbuf; 876 if (uvm_map(kernel_map, (vaddr_t *) &buffers, round_page(size), 877 NULL, UVM_UNKNOWN_OFFSET, 0, 878 UVM_MAPFLAG(UVM_PROT_NONE, UVM_PROT_NONE, UVM_INH_NONE, 879 UVM_ADV_NORMAL, 0)) != 0) 880 panic("startup: cannot allocate VM for buffers"); 881 base = bufpages / nbuf; 882 residual = bufpages % nbuf; 883 for (i = 0; i < nbuf; i++) { 884 vsize_t curbufsize; 885 vaddr_t curbuf; 886 struct vm_page *pg; 887 888 /* 889 * Each buffer has MAXBSIZE bytes of VM space allocated. Of 890 * that MAXBSIZE space, we allocate and map (base+1) pages 891 * for the first "residual" buffers, and then we allocate 892 * "base" pages for the rest. 893 */ 894 curbuf = (vaddr_t) buffers + (i * MAXBSIZE); 895 curbufsize = NBPG * ((i < residual) ? (base+1) : base); 896 897 while (curbufsize) { 898 pg = uvm_pagealloc(NULL, 0, NULL, 0); 899 if (pg == NULL) 900 panic("cpu_startup: not enough memory for " 901 "buffer cache"); 902 pmap_kenter_pa(curbuf, VM_PAGE_TO_PHYS(pg), 903 VM_PROT_READ|VM_PROT_WRITE); 904 curbuf += PAGE_SIZE; 905 curbufsize -= PAGE_SIZE; 906 } 907 } 908 /* 909 * Allocate a submap for exec arguments. This map effectively 910 * limits the number of processes exec'ing at any time. 911 */ 912 exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 913 16 * NCARGS, VM_MAP_PAGEABLE, FALSE, NULL); 914 915 /* 916 * Allocate a submap for physio 917 */ 918 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 919 VM_PHYS_SIZE, 0, FALSE, NULL); 920 921 /* 922 * No need to allocate an mbuf cluster submap. Mbuf clusters 923 * are allocated via the pool allocator, and we use K0SEG to 924 * map those pages. 925 */ 926 927 #if defined(DEBUG) 928 pmapdebug = opmapdebug; 929 #endif 930 format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 931 printf("avail memory = %s\n", pbuf); 932 #if 0 933 { 934 extern u_long pmap_pages_stolen; 935 936 format_bytes(pbuf, sizeof(pbuf), pmap_pages_stolen * PAGE_SIZE); 937 printf("stolen memory for VM structures = %s\n", pbuf); 938 } 939 #endif 940 format_bytes(pbuf, sizeof(pbuf), bufpages * NBPG); 941 printf("using %ld buffers containing %s of memory\n", (long)nbuf, pbuf); 942 943 /* 944 * Set up buffers, so they can be used to read disk labels. 945 */ 946 bufinit(); 947 948 /* 949 * Set up the HWPCB so that it's safe to configure secondary 950 * CPUs. 951 */ 952 hwrpb_primary_init(); 953 } 954 955 /* 956 * Retrieve the platform name from the DSR. 957 */ 958 const char * 959 alpha_dsr_sysname() 960 { 961 struct dsrdb *dsr; 962 const char *sysname; 963 964 /* 965 * DSR does not exist on early HWRPB versions. 966 */ 967 if (hwrpb->rpb_version < HWRPB_DSRDB_MINVERS) 968 return (NULL); 969 970 dsr = (struct dsrdb *)(((caddr_t)hwrpb) + hwrpb->rpb_dsrdb_off); 971 sysname = (const char *)((caddr_t)dsr + (dsr->dsr_sysname_off + 972 sizeof(u_int64_t))); 973 return (sysname); 974 } 975 976 /* 977 * Lookup the system specified system variation in the provided table, 978 * returning the model string on match. 979 */ 980 const char * 981 alpha_variation_name(variation, avtp) 982 u_int64_t variation; 983 const struct alpha_variation_table *avtp; 984 { 985 int i; 986 987 for (i = 0; avtp[i].avt_model != NULL; i++) 988 if (avtp[i].avt_variation == variation) 989 return (avtp[i].avt_model); 990 return (NULL); 991 } 992 993 /* 994 * Generate a default platform name based for unknown system variations. 995 */ 996 const char * 997 alpha_unknown_sysname() 998 { 999 static char s[128]; /* safe size */ 1000 1001 sprintf(s, "%s family, unknown model variation 0x%lx", 1002 platform.family, hwrpb->rpb_variation & SV_ST_MASK); 1003 return ((const char *)s); 1004 } 1005 1006 void 1007 identifycpu() 1008 { 1009 char *s; 1010 int i; 1011 1012 /* 1013 * print out CPU identification information. 1014 */ 1015 printf("%s", cpu_model); 1016 for(s = cpu_model; *s; ++s) 1017 if(strncasecmp(s, "MHz", 3) == 0) 1018 goto skipMHz; 1019 printf(", %ldMHz", hwrpb->rpb_cc_freq / 1000000); 1020 skipMHz: 1021 printf(", s/n "); 1022 for (i = 0; i < 10; i++) 1023 printf("%c", hwrpb->rpb_ssn[i]); 1024 printf("\n"); 1025 printf("%ld byte page size, %d processor%s.\n", 1026 hwrpb->rpb_page_size, ncpus, ncpus == 1 ? "" : "s"); 1027 #if 0 1028 /* this isn't defined for any systems that we run on? */ 1029 printf("serial number 0x%lx 0x%lx\n", 1030 ((long *)hwrpb->rpb_ssn)[0], ((long *)hwrpb->rpb_ssn)[1]); 1031 1032 /* and these aren't particularly useful! */ 1033 printf("variation: 0x%lx, revision 0x%lx\n", 1034 hwrpb->rpb_variation, *(long *)hwrpb->rpb_revision); 1035 #endif 1036 } 1037 1038 int waittime = -1; 1039 struct pcb dumppcb; 1040 1041 void 1042 cpu_reboot(howto, bootstr) 1043 int howto; 1044 char *bootstr; 1045 { 1046 #if defined(MULTIPROCESSOR) 1047 u_long cpu_id = cpu_number(); 1048 u_long wait_mask = (1UL << cpu_id) | 1049 (1UL << hwrpb->rpb_primary_cpu_id); 1050 int i; 1051 #endif 1052 1053 /* If "always halt" was specified as a boot flag, obey. */ 1054 if ((boothowto & RB_HALT) != 0) 1055 howto |= RB_HALT; 1056 1057 boothowto = howto; 1058 1059 /* If system is cold, just halt. */ 1060 if (cold) { 1061 boothowto |= RB_HALT; 1062 goto haltsys; 1063 } 1064 1065 if ((boothowto & RB_NOSYNC) == 0 && waittime < 0) { 1066 waittime = 0; 1067 vfs_shutdown(); 1068 /* 1069 * If we've been adjusting the clock, the todr 1070 * will be out of synch; adjust it now. 1071 */ 1072 resettodr(); 1073 } 1074 1075 /* Disable interrupts. */ 1076 splhigh(); 1077 1078 #if defined(MULTIPROCESSOR) 1079 /* 1080 * Halt all other CPUs. If we're not the primary, the 1081 * primary will spin, waiting for us to halt. 1082 */ 1083 alpha_broadcast_ipi(ALPHA_IPI_HALT); 1084 1085 for (i = 0; i < 10000; i++) { 1086 alpha_mb(); 1087 if (cpus_running == wait_mask) 1088 break; 1089 delay(1000); 1090 } 1091 alpha_mb(); 1092 if (cpus_running != wait_mask) 1093 printf("WARNING: Unable to halt secondary CPUs (0x%lx)\n", 1094 cpus_running); 1095 #endif /* MULTIPROCESSOR */ 1096 1097 /* If rebooting and a dump is requested do it. */ 1098 #if 0 1099 if ((boothowto & (RB_DUMP | RB_HALT)) == RB_DUMP) 1100 #else 1101 if (boothowto & RB_DUMP) 1102 #endif 1103 dumpsys(); 1104 1105 haltsys: 1106 1107 /* run any shutdown hooks */ 1108 doshutdownhooks(); 1109 1110 #ifdef BOOTKEY 1111 printf("hit any key to %s...\n", howto & RB_HALT ? "halt" : "reboot"); 1112 cnpollc(1); /* for proper keyboard command handling */ 1113 cngetc(); 1114 cnpollc(0); 1115 printf("\n"); 1116 #endif 1117 1118 /* Finally, powerdown/halt/reboot the system. */ 1119 if ((boothowto & RB_POWERDOWN) == RB_POWERDOWN && 1120 platform.powerdown != NULL) { 1121 (*platform.powerdown)(); 1122 printf("WARNING: powerdown failed!\n"); 1123 } 1124 printf("%s\n\n", (boothowto & RB_HALT) ? "halted." : "rebooting..."); 1125 #if defined(MULTIPROCESSOR) 1126 if (cpu_id != hwrpb->rpb_primary_cpu_id) 1127 cpu_halt(); 1128 else 1129 #endif 1130 prom_halt(boothowto & RB_HALT); 1131 /*NOTREACHED*/ 1132 } 1133 1134 /* 1135 * These variables are needed by /sbin/savecore 1136 */ 1137 u_long dumpmag = 0x8fca0101; /* magic number */ 1138 int dumpsize = 0; /* pages */ 1139 long dumplo = 0; /* blocks */ 1140 1141 /* 1142 * cpu_dumpsize: calculate size of machine-dependent kernel core dump headers. 1143 */ 1144 int 1145 cpu_dumpsize() 1146 { 1147 int size; 1148 1149 size = ALIGN(sizeof(kcore_seg_t)) + ALIGN(sizeof(cpu_kcore_hdr_t)) + 1150 ALIGN(mem_cluster_cnt * sizeof(phys_ram_seg_t)); 1151 if (roundup(size, dbtob(1)) != dbtob(1)) 1152 return -1; 1153 1154 return (1); 1155 } 1156 1157 /* 1158 * cpu_dump_mempagecnt: calculate size of RAM (in pages) to be dumped. 1159 */ 1160 u_long 1161 cpu_dump_mempagecnt() 1162 { 1163 u_long i, n; 1164 1165 n = 0; 1166 for (i = 0; i < mem_cluster_cnt; i++) 1167 n += atop(mem_clusters[i].size); 1168 return (n); 1169 } 1170 1171 /* 1172 * cpu_dump: dump machine-dependent kernel core dump headers. 1173 */ 1174 int 1175 cpu_dump() 1176 { 1177 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1178 char buf[dbtob(1)]; 1179 kcore_seg_t *segp; 1180 cpu_kcore_hdr_t *cpuhdrp; 1181 phys_ram_seg_t *memsegp; 1182 int i; 1183 1184 dump = bdevsw[major(dumpdev)].d_dump; 1185 1186 bzero(buf, sizeof buf); 1187 segp = (kcore_seg_t *)buf; 1188 cpuhdrp = (cpu_kcore_hdr_t *)&buf[ALIGN(sizeof(*segp))]; 1189 memsegp = (phys_ram_seg_t *)&buf[ ALIGN(sizeof(*segp)) + 1190 ALIGN(sizeof(*cpuhdrp))]; 1191 1192 /* 1193 * Generate a segment header. 1194 */ 1195 CORE_SETMAGIC(*segp, KCORE_MAGIC, MID_MACHINE, CORE_CPU); 1196 segp->c_size = dbtob(1) - ALIGN(sizeof(*segp)); 1197 1198 /* 1199 * Add the machine-dependent header info. 1200 */ 1201 cpuhdrp->lev1map_pa = ALPHA_K0SEG_TO_PHYS((vaddr_t)kernel_lev1map); 1202 cpuhdrp->page_size = PAGE_SIZE; 1203 cpuhdrp->nmemsegs = mem_cluster_cnt; 1204 1205 /* 1206 * Fill in the memory segment descriptors. 1207 */ 1208 for (i = 0; i < mem_cluster_cnt; i++) { 1209 memsegp[i].start = mem_clusters[i].start; 1210 memsegp[i].size = mem_clusters[i].size & ~PAGE_MASK; 1211 } 1212 1213 return (dump(dumpdev, dumplo, (caddr_t)buf, dbtob(1))); 1214 } 1215 1216 /* 1217 * This is called by main to set dumplo and dumpsize. 1218 * Dumps always skip the first NBPG of disk space 1219 * in case there might be a disk label stored there. 1220 * If there is extra space, put dump at the end to 1221 * reduce the chance that swapping trashes it. 1222 */ 1223 void 1224 cpu_dumpconf() 1225 { 1226 int nblks, dumpblks; /* size of dump area */ 1227 int maj; 1228 1229 if (dumpdev == NODEV) 1230 goto bad; 1231 maj = major(dumpdev); 1232 if (maj < 0 || maj >= nblkdev) 1233 panic("dumpconf: bad dumpdev=0x%x", dumpdev); 1234 if (bdevsw[maj].d_psize == NULL) 1235 goto bad; 1236 nblks = (*bdevsw[maj].d_psize)(dumpdev); 1237 if (nblks <= ctod(1)) 1238 goto bad; 1239 1240 dumpblks = cpu_dumpsize(); 1241 if (dumpblks < 0) 1242 goto bad; 1243 dumpblks += ctod(cpu_dump_mempagecnt()); 1244 1245 /* If dump won't fit (incl. room for possible label), punt. */ 1246 if (dumpblks > (nblks - ctod(1))) 1247 goto bad; 1248 1249 /* Put dump at end of partition */ 1250 dumplo = nblks - dumpblks; 1251 1252 /* dumpsize is in page units, and doesn't include headers. */ 1253 dumpsize = cpu_dump_mempagecnt(); 1254 return; 1255 1256 bad: 1257 dumpsize = 0; 1258 return; 1259 } 1260 1261 /* 1262 * Dump the kernel's image to the swap partition. 1263 */ 1264 #define BYTES_PER_DUMP NBPG 1265 1266 void 1267 dumpsys() 1268 { 1269 u_long totalbytesleft, bytes, i, n, memcl; 1270 u_long maddr; 1271 int psize; 1272 daddr_t blkno; 1273 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1274 int error; 1275 1276 /* Save registers. */ 1277 savectx(&dumppcb); 1278 1279 if (dumpdev == NODEV) 1280 return; 1281 1282 /* 1283 * For dumps during autoconfiguration, 1284 * if dump device has already configured... 1285 */ 1286 if (dumpsize == 0) 1287 cpu_dumpconf(); 1288 if (dumplo <= 0) { 1289 printf("\ndump to dev %u,%u not possible\n", major(dumpdev), 1290 minor(dumpdev)); 1291 return; 1292 } 1293 printf("\ndumping to dev %u,%u offset %ld\n", major(dumpdev), 1294 minor(dumpdev), dumplo); 1295 1296 psize = (*bdevsw[major(dumpdev)].d_psize)(dumpdev); 1297 printf("dump "); 1298 if (psize == -1) { 1299 printf("area unavailable\n"); 1300 return; 1301 } 1302 1303 /* XXX should purge all outstanding keystrokes. */ 1304 1305 if ((error = cpu_dump()) != 0) 1306 goto err; 1307 1308 totalbytesleft = ptoa(cpu_dump_mempagecnt()); 1309 blkno = dumplo + cpu_dumpsize(); 1310 dump = bdevsw[major(dumpdev)].d_dump; 1311 error = 0; 1312 1313 for (memcl = 0; memcl < mem_cluster_cnt; memcl++) { 1314 maddr = mem_clusters[memcl].start; 1315 bytes = mem_clusters[memcl].size & ~PAGE_MASK; 1316 1317 for (i = 0; i < bytes; i += n, totalbytesleft -= n) { 1318 1319 /* Print out how many MBs we to go. */ 1320 if ((totalbytesleft % (1024*1024)) == 0) 1321 printf("%ld ", totalbytesleft / (1024 * 1024)); 1322 1323 /* Limit size for next transfer. */ 1324 n = bytes - i; 1325 if (n > BYTES_PER_DUMP) 1326 n = BYTES_PER_DUMP; 1327 1328 error = (*dump)(dumpdev, blkno, 1329 (caddr_t)ALPHA_PHYS_TO_K0SEG(maddr), n); 1330 if (error) 1331 goto err; 1332 maddr += n; 1333 blkno += btodb(n); /* XXX? */ 1334 1335 /* XXX should look for keystrokes, to cancel. */ 1336 } 1337 } 1338 1339 err: 1340 switch (error) { 1341 1342 case ENXIO: 1343 printf("device bad\n"); 1344 break; 1345 1346 case EFAULT: 1347 printf("device not ready\n"); 1348 break; 1349 1350 case EINVAL: 1351 printf("area improper\n"); 1352 break; 1353 1354 case EIO: 1355 printf("i/o error\n"); 1356 break; 1357 1358 case EINTR: 1359 printf("aborted from console\n"); 1360 break; 1361 1362 case 0: 1363 printf("succeeded\n"); 1364 break; 1365 1366 default: 1367 printf("error %d\n", error); 1368 break; 1369 } 1370 printf("\n\n"); 1371 delay(1000); 1372 } 1373 1374 void 1375 frametoreg(framep, regp) 1376 struct trapframe *framep; 1377 struct reg *regp; 1378 { 1379 1380 regp->r_regs[R_V0] = framep->tf_regs[FRAME_V0]; 1381 regp->r_regs[R_T0] = framep->tf_regs[FRAME_T0]; 1382 regp->r_regs[R_T1] = framep->tf_regs[FRAME_T1]; 1383 regp->r_regs[R_T2] = framep->tf_regs[FRAME_T2]; 1384 regp->r_regs[R_T3] = framep->tf_regs[FRAME_T3]; 1385 regp->r_regs[R_T4] = framep->tf_regs[FRAME_T4]; 1386 regp->r_regs[R_T5] = framep->tf_regs[FRAME_T5]; 1387 regp->r_regs[R_T6] = framep->tf_regs[FRAME_T6]; 1388 regp->r_regs[R_T7] = framep->tf_regs[FRAME_T7]; 1389 regp->r_regs[R_S0] = framep->tf_regs[FRAME_S0]; 1390 regp->r_regs[R_S1] = framep->tf_regs[FRAME_S1]; 1391 regp->r_regs[R_S2] = framep->tf_regs[FRAME_S2]; 1392 regp->r_regs[R_S3] = framep->tf_regs[FRAME_S3]; 1393 regp->r_regs[R_S4] = framep->tf_regs[FRAME_S4]; 1394 regp->r_regs[R_S5] = framep->tf_regs[FRAME_S5]; 1395 regp->r_regs[R_S6] = framep->tf_regs[FRAME_S6]; 1396 regp->r_regs[R_A0] = framep->tf_regs[FRAME_A0]; 1397 regp->r_regs[R_A1] = framep->tf_regs[FRAME_A1]; 1398 regp->r_regs[R_A2] = framep->tf_regs[FRAME_A2]; 1399 regp->r_regs[R_A3] = framep->tf_regs[FRAME_A3]; 1400 regp->r_regs[R_A4] = framep->tf_regs[FRAME_A4]; 1401 regp->r_regs[R_A5] = framep->tf_regs[FRAME_A5]; 1402 regp->r_regs[R_T8] = framep->tf_regs[FRAME_T8]; 1403 regp->r_regs[R_T9] = framep->tf_regs[FRAME_T9]; 1404 regp->r_regs[R_T10] = framep->tf_regs[FRAME_T10]; 1405 regp->r_regs[R_T11] = framep->tf_regs[FRAME_T11]; 1406 regp->r_regs[R_RA] = framep->tf_regs[FRAME_RA]; 1407 regp->r_regs[R_T12] = framep->tf_regs[FRAME_T12]; 1408 regp->r_regs[R_AT] = framep->tf_regs[FRAME_AT]; 1409 regp->r_regs[R_GP] = framep->tf_regs[FRAME_GP]; 1410 /* regp->r_regs[R_SP] = framep->tf_regs[FRAME_SP]; XXX */ 1411 regp->r_regs[R_ZERO] = 0; 1412 } 1413 1414 void 1415 regtoframe(regp, framep) 1416 struct reg *regp; 1417 struct trapframe *framep; 1418 { 1419 1420 framep->tf_regs[FRAME_V0] = regp->r_regs[R_V0]; 1421 framep->tf_regs[FRAME_T0] = regp->r_regs[R_T0]; 1422 framep->tf_regs[FRAME_T1] = regp->r_regs[R_T1]; 1423 framep->tf_regs[FRAME_T2] = regp->r_regs[R_T2]; 1424 framep->tf_regs[FRAME_T3] = regp->r_regs[R_T3]; 1425 framep->tf_regs[FRAME_T4] = regp->r_regs[R_T4]; 1426 framep->tf_regs[FRAME_T5] = regp->r_regs[R_T5]; 1427 framep->tf_regs[FRAME_T6] = regp->r_regs[R_T6]; 1428 framep->tf_regs[FRAME_T7] = regp->r_regs[R_T7]; 1429 framep->tf_regs[FRAME_S0] = regp->r_regs[R_S0]; 1430 framep->tf_regs[FRAME_S1] = regp->r_regs[R_S1]; 1431 framep->tf_regs[FRAME_S2] = regp->r_regs[R_S2]; 1432 framep->tf_regs[FRAME_S3] = regp->r_regs[R_S3]; 1433 framep->tf_regs[FRAME_S4] = regp->r_regs[R_S4]; 1434 framep->tf_regs[FRAME_S5] = regp->r_regs[R_S5]; 1435 framep->tf_regs[FRAME_S6] = regp->r_regs[R_S6]; 1436 framep->tf_regs[FRAME_A0] = regp->r_regs[R_A0]; 1437 framep->tf_regs[FRAME_A1] = regp->r_regs[R_A1]; 1438 framep->tf_regs[FRAME_A2] = regp->r_regs[R_A2]; 1439 framep->tf_regs[FRAME_A3] = regp->r_regs[R_A3]; 1440 framep->tf_regs[FRAME_A4] = regp->r_regs[R_A4]; 1441 framep->tf_regs[FRAME_A5] = regp->r_regs[R_A5]; 1442 framep->tf_regs[FRAME_T8] = regp->r_regs[R_T8]; 1443 framep->tf_regs[FRAME_T9] = regp->r_regs[R_T9]; 1444 framep->tf_regs[FRAME_T10] = regp->r_regs[R_T10]; 1445 framep->tf_regs[FRAME_T11] = regp->r_regs[R_T11]; 1446 framep->tf_regs[FRAME_RA] = regp->r_regs[R_RA]; 1447 framep->tf_regs[FRAME_T12] = regp->r_regs[R_T12]; 1448 framep->tf_regs[FRAME_AT] = regp->r_regs[R_AT]; 1449 framep->tf_regs[FRAME_GP] = regp->r_regs[R_GP]; 1450 /* framep->tf_regs[FRAME_SP] = regp->r_regs[R_SP]; XXX */ 1451 /* ??? = regp->r_regs[R_ZERO]; */ 1452 } 1453 1454 void 1455 printregs(regp) 1456 struct reg *regp; 1457 { 1458 int i; 1459 1460 for (i = 0; i < 32; i++) 1461 printf("R%d:\t0x%016lx%s", i, regp->r_regs[i], 1462 i & 1 ? "\n" : "\t"); 1463 } 1464 1465 void 1466 regdump(framep) 1467 struct trapframe *framep; 1468 { 1469 struct reg reg; 1470 1471 frametoreg(framep, ®); 1472 reg.r_regs[R_SP] = alpha_pal_rdusp(); 1473 1474 printf("REGISTERS:\n"); 1475 printregs(®); 1476 } 1477 1478 1479 /* 1480 * Send an interrupt to process. 1481 */ 1482 void 1483 sendsig(catcher, sig, mask, code) 1484 sig_t catcher; 1485 int sig; 1486 sigset_t *mask; 1487 u_long code; 1488 { 1489 struct proc *p = curproc; 1490 struct sigcontext *scp, ksc; 1491 struct trapframe *frame; 1492 int onstack, fsize, rndfsize; 1493 1494 frame = p->p_md.md_tf; 1495 1496 /* Do we need to jump onto the signal stack? */ 1497 onstack = 1498 (p->p_sigctx.ps_sigstk.ss_flags & (SS_DISABLE | SS_ONSTACK)) == 0 && 1499 (SIGACTION(p, sig).sa_flags & SA_ONSTACK) != 0; 1500 1501 /* Allocate space for the signal handler context. */ 1502 fsize = sizeof(ksc); 1503 rndfsize = ((fsize + 15) / 16) * 16; 1504 1505 if (onstack) 1506 scp = (struct sigcontext *)((caddr_t)p->p_sigctx.ps_sigstk.ss_sp + 1507 p->p_sigctx.ps_sigstk.ss_size); 1508 else 1509 scp = (struct sigcontext *)(alpha_pal_rdusp()); 1510 scp = (struct sigcontext *)((caddr_t)scp - rndfsize); 1511 1512 #ifdef DEBUG 1513 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1514 printf("sendsig(%d): sig %d ssp %p usp %p\n", p->p_pid, 1515 sig, &onstack, scp); 1516 #endif 1517 1518 /* Build stack frame for signal trampoline. */ 1519 ksc.sc_pc = frame->tf_regs[FRAME_PC]; 1520 ksc.sc_ps = frame->tf_regs[FRAME_PS]; 1521 1522 /* Save register context. */ 1523 frametoreg(frame, (struct reg *)ksc.sc_regs); 1524 ksc.sc_regs[R_ZERO] = 0xACEDBADE; /* magic number */ 1525 ksc.sc_regs[R_SP] = alpha_pal_rdusp(); 1526 1527 /* save the floating-point state, if necessary, then copy it. */ 1528 if (p->p_addr->u_pcb.pcb_fpcpu != NULL) 1529 fpusave_proc(p, 1); 1530 ksc.sc_ownedfp = p->p_md.md_flags & MDP_FPUSED; 1531 bcopy(&p->p_addr->u_pcb.pcb_fp, (struct fpreg *)ksc.sc_fpregs, 1532 sizeof(struct fpreg)); 1533 ksc.sc_fp_control = 0; /* XXX ? */ 1534 bzero(ksc.sc_reserved, sizeof ksc.sc_reserved); /* XXX */ 1535 bzero(ksc.sc_xxx, sizeof ksc.sc_xxx); /* XXX */ 1536 1537 /* Save signal stack. */ 1538 ksc.sc_onstack = p->p_sigctx.ps_sigstk.ss_flags & SS_ONSTACK; 1539 1540 /* Save signal mask. */ 1541 ksc.sc_mask = *mask; 1542 1543 #ifdef COMPAT_13 1544 /* 1545 * XXX We always have to save an old style signal mask because 1546 * XXX we might be delivering a signal to a process which will 1547 * XXX escape from the signal in a non-standard way and invoke 1548 * XXX sigreturn() directly. 1549 */ 1550 { 1551 /* Note: it's a long in the stack frame. */ 1552 sigset13_t mask13; 1553 1554 native_sigset_to_sigset13(mask, &mask13); 1555 ksc.__sc_mask13 = mask13; 1556 } 1557 #endif 1558 1559 #ifdef COMPAT_OSF1 1560 /* 1561 * XXX Create an OSF/1-style sigcontext and associated goo. 1562 */ 1563 #endif 1564 1565 if (copyout(&ksc, (caddr_t)scp, fsize) != 0) { 1566 /* 1567 * Process has trashed its stack; give it an illegal 1568 * instruction to halt it in its tracks. 1569 */ 1570 #ifdef DEBUG 1571 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1572 printf("sendsig(%d): copyout failed on sig %d\n", 1573 p->p_pid, sig); 1574 #endif 1575 sigexit(p, SIGILL); 1576 /* NOTREACHED */ 1577 } 1578 #ifdef DEBUG 1579 if (sigdebug & SDB_FOLLOW) 1580 printf("sendsig(%d): sig %d scp %p code %lx\n", p->p_pid, sig, 1581 scp, code); 1582 #endif 1583 1584 /* Set up the registers to return to sigcode. */ 1585 frame->tf_regs[FRAME_PC] = (u_int64_t)p->p_sigctx.ps_sigcode; 1586 frame->tf_regs[FRAME_A0] = sig; 1587 frame->tf_regs[FRAME_A1] = code; 1588 frame->tf_regs[FRAME_A2] = (u_int64_t)scp; 1589 frame->tf_regs[FRAME_T12] = (u_int64_t)catcher; /* t12 is pv */ 1590 alpha_pal_wrusp((unsigned long)scp); 1591 1592 /* Remember that we're now on the signal stack. */ 1593 if (onstack) 1594 p->p_sigctx.ps_sigstk.ss_flags |= SS_ONSTACK; 1595 1596 #ifdef DEBUG 1597 if (sigdebug & SDB_FOLLOW) 1598 printf("sendsig(%d): pc %lx, catcher %lx\n", p->p_pid, 1599 frame->tf_regs[FRAME_PC], frame->tf_regs[FRAME_A3]); 1600 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1601 printf("sendsig(%d): sig %d returns\n", 1602 p->p_pid, sig); 1603 #endif 1604 } 1605 1606 /* 1607 * System call to cleanup state after a signal 1608 * has been taken. Reset signal mask and 1609 * stack state from context left by sendsig (above). 1610 * Return to previous pc and psl as specified by 1611 * context left by sendsig. Check carefully to 1612 * make sure that the user has not modified the 1613 * psl to gain improper privileges or to cause 1614 * a machine fault. 1615 */ 1616 /* ARGSUSED */ 1617 int 1618 sys___sigreturn14(p, v, retval) 1619 struct proc *p; 1620 void *v; 1621 register_t *retval; 1622 { 1623 struct sys___sigreturn14_args /* { 1624 syscallarg(struct sigcontext *) sigcntxp; 1625 } */ *uap = v; 1626 struct sigcontext *scp, ksc; 1627 1628 /* 1629 * The trampoline code hands us the context. 1630 * It is unsafe to keep track of it ourselves, in the event that a 1631 * program jumps out of a signal handler. 1632 */ 1633 scp = SCARG(uap, sigcntxp); 1634 #ifdef DEBUG 1635 if (sigdebug & SDB_FOLLOW) 1636 printf("sigreturn: pid %d, scp %p\n", p->p_pid, scp); 1637 #endif 1638 if (ALIGN(scp) != (u_int64_t)scp) 1639 return (EINVAL); 1640 1641 if (copyin((caddr_t)scp, &ksc, sizeof(ksc)) != 0) 1642 return (EFAULT); 1643 1644 if (ksc.sc_regs[R_ZERO] != 0xACEDBADE) /* magic number */ 1645 return (EINVAL); 1646 1647 /* Restore register context. */ 1648 p->p_md.md_tf->tf_regs[FRAME_PC] = ksc.sc_pc; 1649 p->p_md.md_tf->tf_regs[FRAME_PS] = 1650 (ksc.sc_ps | ALPHA_PSL_USERSET) & ~ALPHA_PSL_USERCLR; 1651 1652 regtoframe((struct reg *)ksc.sc_regs, p->p_md.md_tf); 1653 alpha_pal_wrusp(ksc.sc_regs[R_SP]); 1654 1655 /* XXX ksc.sc_ownedfp ? */ 1656 if (p->p_addr->u_pcb.pcb_fpcpu != NULL) 1657 fpusave_proc(p, 0); 1658 bcopy((struct fpreg *)ksc.sc_fpregs, &p->p_addr->u_pcb.pcb_fp, 1659 sizeof(struct fpreg)); 1660 /* XXX ksc.sc_fp_control ? */ 1661 1662 /* Restore signal stack. */ 1663 if (ksc.sc_onstack & SS_ONSTACK) 1664 p->p_sigctx.ps_sigstk.ss_flags |= SS_ONSTACK; 1665 else 1666 p->p_sigctx.ps_sigstk.ss_flags &= ~SS_ONSTACK; 1667 1668 /* Restore signal mask. */ 1669 (void) sigprocmask1(p, SIG_SETMASK, &ksc.sc_mask, 0); 1670 1671 #ifdef DEBUG 1672 if (sigdebug & SDB_FOLLOW) 1673 printf("sigreturn(%d): returns\n", p->p_pid); 1674 #endif 1675 return (EJUSTRETURN); 1676 } 1677 1678 /* 1679 * machine dependent system variables. 1680 */ 1681 int 1682 cpu_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 1683 int *name; 1684 u_int namelen; 1685 void *oldp; 1686 size_t *oldlenp; 1687 void *newp; 1688 size_t newlen; 1689 struct proc *p; 1690 { 1691 dev_t consdev; 1692 1693 /* all sysctl names at this level are terminal */ 1694 if (namelen != 1) 1695 return (ENOTDIR); /* overloaded */ 1696 1697 switch (name[0]) { 1698 case CPU_CONSDEV: 1699 if (cn_tab != NULL) 1700 consdev = cn_tab->cn_dev; 1701 else 1702 consdev = NODEV; 1703 return (sysctl_rdstruct(oldp, oldlenp, newp, &consdev, 1704 sizeof consdev)); 1705 1706 case CPU_ROOT_DEVICE: 1707 return (sysctl_rdstring(oldp, oldlenp, newp, 1708 root_device->dv_xname)); 1709 1710 case CPU_UNALIGNED_PRINT: 1711 return (sysctl_int(oldp, oldlenp, newp, newlen, 1712 &alpha_unaligned_print)); 1713 1714 case CPU_UNALIGNED_FIX: 1715 return (sysctl_int(oldp, oldlenp, newp, newlen, 1716 &alpha_unaligned_fix)); 1717 1718 case CPU_UNALIGNED_SIGBUS: 1719 return (sysctl_int(oldp, oldlenp, newp, newlen, 1720 &alpha_unaligned_sigbus)); 1721 1722 case CPU_BOOTED_KERNEL: 1723 return (sysctl_rdstring(oldp, oldlenp, newp, 1724 bootinfo.booted_kernel)); 1725 1726 default: 1727 return (EOPNOTSUPP); 1728 } 1729 /* NOTREACHED */ 1730 } 1731 1732 /* 1733 * Set registers on exec. 1734 */ 1735 void 1736 setregs(p, pack, stack) 1737 register struct proc *p; 1738 struct exec_package *pack; 1739 u_long stack; 1740 { 1741 struct trapframe *tfp = p->p_md.md_tf; 1742 #ifdef DEBUG 1743 int i; 1744 #endif 1745 1746 #ifdef DEBUG 1747 /* 1748 * Crash and dump, if the user requested it. 1749 */ 1750 if (boothowto & RB_DUMP) 1751 panic("crash requested by boot flags"); 1752 #endif 1753 1754 #ifdef DEBUG 1755 for (i = 0; i < FRAME_SIZE; i++) 1756 tfp->tf_regs[i] = 0xbabefacedeadbeef; 1757 #else 1758 bzero(tfp->tf_regs, FRAME_SIZE * sizeof tfp->tf_regs[0]); 1759 #endif 1760 bzero(&p->p_addr->u_pcb.pcb_fp, sizeof p->p_addr->u_pcb.pcb_fp); 1761 p->p_addr->u_pcb.pcb_fp.fpr_cr = FPCR_INED 1762 | FPCR_UNFD 1763 | FPCR_UNDZ 1764 | FPCR_DYN(FP_RN) 1765 | FPCR_OVFD 1766 | FPCR_DZED 1767 | FPCR_INVD 1768 | FPCR_DNZ; 1769 alpha_pal_wrusp(stack); 1770 tfp->tf_regs[FRAME_PS] = ALPHA_PSL_USERSET; 1771 tfp->tf_regs[FRAME_PC] = pack->ep_entry & ~3; 1772 1773 tfp->tf_regs[FRAME_A0] = stack; /* a0 = sp */ 1774 tfp->tf_regs[FRAME_A1] = 0; /* a1 = rtld cleanup */ 1775 tfp->tf_regs[FRAME_A2] = 0; /* a2 = rtld object */ 1776 tfp->tf_regs[FRAME_A3] = (u_int64_t)PS_STRINGS; /* a3 = ps_strings */ 1777 tfp->tf_regs[FRAME_T12] = tfp->tf_regs[FRAME_PC]; /* a.k.a. PV */ 1778 1779 p->p_md.md_flags &= ~MDP_FPUSED; 1780 if (p->p_addr->u_pcb.pcb_fpcpu != NULL) 1781 fpusave_proc(p, 0); 1782 } 1783 1784 /* 1785 * Release the FPU. 1786 */ 1787 void 1788 fpusave_cpu(struct cpu_info *ci, int save) 1789 { 1790 struct proc *p; 1791 #if defined(MULTIPROCESSOR) 1792 int s; 1793 #endif 1794 1795 KDASSERT(ci == curcpu()); 1796 1797 p = ci->ci_fpcurproc; 1798 if (p == NULL) 1799 return; 1800 1801 if (save) { 1802 alpha_pal_wrfen(1); 1803 savefpstate(&p->p_addr->u_pcb.pcb_fp); 1804 } 1805 1806 alpha_pal_wrfen(0); 1807 1808 #if defined(MULTIPROCESSOR) 1809 s = splhigh(); 1810 #endif 1811 p->p_addr->u_pcb.pcb_fpcpu = NULL; 1812 ci->ci_fpcurproc = NULL; 1813 #if defined(MULTIPROCESSOR) 1814 splx(s); 1815 alpha_mb(); 1816 #endif 1817 } 1818 1819 /* 1820 * Synchronize FP state for this process. 1821 */ 1822 void 1823 fpusave_proc(struct proc *p, int save) 1824 { 1825 struct cpu_info *ci = curcpu(); 1826 struct cpu_info *oci; 1827 1828 KDASSERT(p->p_addr != NULL); 1829 KDASSERT(p->p_flag & P_INMEM); 1830 1831 oci = p->p_addr->u_pcb.pcb_fpcpu; 1832 if (oci == NULL) 1833 return; 1834 1835 #if defined(MULTIPROCESSOR) 1836 if (oci == ci) { 1837 int s; 1838 KASSERT(ci->ci_fpcurproc == p); 1839 s = splhigh(); 1840 fpusave_cpu(ci, save); 1841 splx(s); 1842 } else { 1843 u_long ipi = save ? ALPHA_IPI_SYNCH_FPU : 1844 ALPHA_IPI_DISCARD_FPU; 1845 1846 KASSERT(oci->ci_fpcurproc == p); 1847 do { 1848 alpha_send_ipi(oci->ci_cpuid, ipi); 1849 } while (p->p_addr->u_pcb.pcb_fpcpu != NULL); 1850 } 1851 #else 1852 KASSERT(ci->ci_fpcurproc == p); 1853 fpusave_cpu(ci, save); 1854 #endif /* MULTIPROCESSOR */ 1855 } 1856 1857 /* 1858 * The following primitives manipulate the run queues. _whichqs tells which 1859 * of the 32 queues _qs have processes in them. Setrunqueue puts processes 1860 * into queues, Remrunqueue removes them from queues. The running process is 1861 * on no queue, other processes are on a queue related to p->p_priority, 1862 * divided by 4 actually to shrink the 0-127 range of priorities into the 32 1863 * available queues. 1864 */ 1865 /* 1866 * setrunqueue(p) 1867 * proc *p; 1868 * 1869 * Call should be made at splclock(), and p->p_stat should be SRUN. 1870 */ 1871 1872 void 1873 setrunqueue(p) 1874 struct proc *p; 1875 { 1876 int bit; 1877 1878 /* firewall: p->p_back must be NULL */ 1879 if (p->p_back != NULL) 1880 panic("setrunqueue"); 1881 1882 bit = p->p_priority >> 2; 1883 sched_whichqs |= (1 << bit); 1884 p->p_forw = (struct proc *)&sched_qs[bit]; 1885 p->p_back = sched_qs[bit].ph_rlink; 1886 p->p_back->p_forw = p; 1887 sched_qs[bit].ph_rlink = p; 1888 } 1889 1890 /* 1891 * remrunqueue(p) 1892 * 1893 * Call should be made at splclock(). 1894 */ 1895 void 1896 remrunqueue(p) 1897 struct proc *p; 1898 { 1899 int bit; 1900 1901 bit = p->p_priority >> 2; 1902 if ((sched_whichqs & (1 << bit)) == 0) 1903 panic("remrunqueue"); 1904 1905 p->p_back->p_forw = p->p_forw; 1906 p->p_forw->p_back = p->p_back; 1907 p->p_back = NULL; /* for firewall checking. */ 1908 1909 if ((struct proc *)&sched_qs[bit] == sched_qs[bit].ph_link) 1910 sched_whichqs &= ~(1 << bit); 1911 } 1912 1913 /* 1914 * Return the best possible estimate of the time in the timeval 1915 * to which tvp points. Unfortunately, we can't read the hardware registers. 1916 * We guarantee that the time will be greater than the value obtained by a 1917 * previous call. 1918 * 1919 * XXX PLEASE REWRITE ME TO USE THE CYCLE COUNTER AND DEAL WITH 1920 * XXX MULTIPLE CPUs IN A SANE WAY! 1921 */ 1922 void 1923 microtime(tvp) 1924 register struct timeval *tvp; 1925 { 1926 static struct timeval lasttime; 1927 static struct simplelock microtime_slock = SIMPLELOCK_INITIALIZER; 1928 int s; 1929 1930 s = splclock(); 1931 simple_lock(µtime_slock); 1932 1933 *tvp = time; 1934 #ifdef notdef 1935 tvp->tv_usec += clkread(); 1936 while (tvp->tv_usec >= 1000000) { 1937 tvp->tv_sec++; 1938 tvp->tv_usec -= 1000000; 1939 } 1940 #endif 1941 if (tvp->tv_sec == lasttime.tv_sec && 1942 tvp->tv_usec <= lasttime.tv_usec && 1943 (tvp->tv_usec = lasttime.tv_usec + 1) >= 1000000) { 1944 tvp->tv_sec++; 1945 tvp->tv_usec -= 1000000; 1946 } 1947 lasttime = *tvp; 1948 1949 simple_unlock(µtime_slock); 1950 splx(s); 1951 } 1952 1953 /* 1954 * Wait "n" microseconds. 1955 */ 1956 void 1957 delay(n) 1958 unsigned long n; 1959 { 1960 unsigned long pcc0, pcc1, curcycle, cycles, usec; 1961 1962 if (n == 0) 1963 return; 1964 1965 pcc0 = alpha_rpcc() & 0xffffffffUL; 1966 cycles = 0; 1967 usec = 0; 1968 1969 while (usec <= n) { 1970 /* 1971 * Get the next CPU cycle count- assumes that we cannot 1972 * have had more than one 32 bit overflow. 1973 */ 1974 pcc1 = alpha_rpcc() & 0xffffffffUL; 1975 if (pcc1 < pcc0) 1976 curcycle = (pcc1 + 0x100000000UL) - pcc0; 1977 else 1978 curcycle = pcc1 - pcc0; 1979 1980 /* 1981 * We now have the number of processor cycles since we 1982 * last checked. Add the current cycle count to the 1983 * running total. If it's over cycles_per_usec, increment 1984 * the usec counter. 1985 */ 1986 cycles += curcycle; 1987 while (cycles > cycles_per_usec) { 1988 usec++; 1989 cycles -= cycles_per_usec; 1990 } 1991 pcc0 = pcc1; 1992 } 1993 } 1994 1995 #if defined(COMPAT_OSF1) || 1 /* XXX */ 1996 void cpu_exec_ecoff_setregs __P((struct proc *, struct exec_package *, 1997 u_long)); 1998 #endif 1999 2000 #if 1 /* XXX */ 2001 void 2002 cpu_exec_ecoff_setregs(p, epp, stack) 2003 struct proc *p; 2004 struct exec_package *epp; 2005 u_long stack; 2006 { 2007 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2008 2009 setregs(p, epp, stack); 2010 p->p_md.md_tf->tf_regs[FRAME_GP] = execp->a.gp_value; 2011 } 2012 2013 /* 2014 * cpu_exec_ecoff_hook(): 2015 * cpu-dependent ECOFF format hook for execve(). 2016 * 2017 * Do any machine-dependent diddling of the exec package when doing ECOFF. 2018 * 2019 */ 2020 int 2021 cpu_exec_ecoff_probe(p, epp) 2022 struct proc *p; 2023 struct exec_package *epp; 2024 { 2025 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2026 int error; 2027 2028 if (execp->f.f_magic == ECOFF_MAGIC_NETBSD_ALPHA) 2029 error = 0; 2030 else 2031 error = ENOEXEC; 2032 2033 return (error); 2034 } 2035 #endif 2036 2037 int 2038 alpha_pa_access(pa) 2039 u_long pa; 2040 { 2041 int i; 2042 2043 for (i = 0; i < mem_cluster_cnt; i++) { 2044 if (pa < mem_clusters[i].start) 2045 continue; 2046 if ((pa - mem_clusters[i].start) >= 2047 (mem_clusters[i].size & ~PAGE_MASK)) 2048 continue; 2049 return (mem_clusters[i].size & PAGE_MASK); /* prot */ 2050 } 2051 2052 /* 2053 * Address is not a memory address. If we're secure, disallow 2054 * access. Otherwise, grant read/write. 2055 */ 2056 if (securelevel > 0) 2057 return (PROT_NONE); 2058 else 2059 return (PROT_READ | PROT_WRITE); 2060 } 2061 2062 /* XXX XXX BEGIN XXX XXX */ 2063 paddr_t alpha_XXX_dmamap_or; /* XXX */ 2064 /* XXX */ 2065 paddr_t /* XXX */ 2066 alpha_XXX_dmamap(v) /* XXX */ 2067 vaddr_t v; /* XXX */ 2068 { /* XXX */ 2069 /* XXX */ 2070 return (vtophys(v) | alpha_XXX_dmamap_or); /* XXX */ 2071 } /* XXX */ 2072 /* XXX XXX END XXX XXX */ 2073 2074 char * 2075 dot_conv(x) 2076 unsigned long x; 2077 { 2078 int i; 2079 char *xc; 2080 static int next; 2081 static char space[2][20]; 2082 2083 xc = space[next ^= 1] + sizeof space[0]; 2084 *--xc = '\0'; 2085 for (i = 0;; ++i) { 2086 if (i && (i & 3) == 0) 2087 *--xc = '.'; 2088 *--xc = "0123456789abcdef"[x & 0xf]; 2089 x >>= 4; 2090 if (x == 0) 2091 break; 2092 } 2093 return xc; 2094 } 2095
Indexes created Fri Oct 03 02:09:57 GMT 2025