machdep.c revision 1.160
1 /* $NetBSD: machdep.c,v 1.160 1999/02/12 06:30:08 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 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_uvm.h" 70 #include "opt_pmap_new.h" 71 #include "opt_dec_3000_300.h" 72 #include "opt_dec_3000_500.h" 73 #include "opt_compat_osf1.h" 74 #include "opt_compat_netbsd.h" 75 #include "opt_inet.h" 76 #include "opt_atalk.h" 77 #include "opt_ccitt.h" 78 #include "opt_iso.h" 79 #include "opt_ns.h" 80 #include "opt_natm.h" 81 #include "opt_sysv.h" 82 83 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 84 85 __KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.160 1999/02/12 06:30:08 thorpej Exp $"); 86 87 #include <sys/param.h> 88 #include <sys/systm.h> 89 #include <sys/signalvar.h> 90 #include <sys/kernel.h> 91 #include <sys/map.h> 92 #include <sys/proc.h> 93 #include <sys/buf.h> 94 #include <sys/reboot.h> 95 #include <sys/device.h> 96 #include <sys/file.h> 97 #ifdef REAL_CLISTS 98 #include <sys/clist.h> 99 #endif 100 #include <sys/callout.h> 101 #include <sys/malloc.h> 102 #include <sys/mbuf.h> 103 #include <sys/mman.h> 104 #include <sys/msgbuf.h> 105 #include <sys/ioctl.h> 106 #include <sys/tty.h> 107 #include <sys/user.h> 108 #include <sys/exec.h> 109 #include <sys/exec_ecoff.h> 110 #include <vm/vm.h> 111 #include <sys/sysctl.h> 112 #include <sys/core.h> 113 #include <sys/kcore.h> 114 #include <machine/kcore.h> 115 #ifdef SYSVMSG 116 #include <sys/msg.h> 117 #endif 118 #ifdef SYSVSEM 119 #include <sys/sem.h> 120 #endif 121 #ifdef SYSVSHM 122 #include <sys/shm.h> 123 #endif 124 125 #include <sys/mount.h> 126 #include <sys/syscallargs.h> 127 128 #include <vm/vm_kern.h> 129 130 #if defined(UVM) 131 #include <uvm/uvm_extern.h> 132 #endif 133 134 #include <dev/cons.h> 135 136 #include <machine/autoconf.h> 137 #include <machine/cpu.h> 138 #include <machine/reg.h> 139 #include <machine/rpb.h> 140 #include <machine/prom.h> 141 #include <machine/conf.h> 142 143 #include <alpha/alpha/cpuvar.h> 144 145 #include <net/netisr.h> 146 #include <net/if.h> 147 148 #ifdef INET 149 #include <net/route.h> 150 #include <netinet/in.h> 151 #include <netinet/ip_var.h> 152 #include "arp.h" 153 #if NARP > 0 154 #include <netinet/if_inarp.h> 155 #endif 156 #endif 157 #ifdef NS 158 #include <netns/ns_var.h> 159 #endif 160 #ifdef ISO 161 #include <netiso/iso.h> 162 #include <netiso/clnp.h> 163 #endif 164 #ifdef CCITT 165 #include <netccitt/x25.h> 166 #include <netccitt/pk.h> 167 #include <netccitt/pk_extern.h> 168 #endif 169 #ifdef NATM 170 #include <netnatm/natm.h> 171 #endif 172 #ifdef NETATALK 173 #include <netatalk/at_extern.h> 174 #endif 175 #include "ppp.h" 176 #if NPPP > 0 177 #include <net/ppp_defs.h> 178 #include <net/if_ppp.h> 179 #endif 180 181 #ifdef DDB 182 #include <machine/db_machdep.h> 183 #include <ddb/db_access.h> 184 #include <ddb/db_sym.h> 185 #include <ddb/db_extern.h> 186 #include <ddb/db_interface.h> 187 #endif 188 189 #include <machine/alpha.h> 190 #include <machine/intrcnt.h> 191 192 #include "com.h" 193 #if NCOM > 0 194 extern void comsoft __P((void)); 195 #endif 196 197 #if defined(UVM) 198 vm_map_t exec_map = NULL; 199 vm_map_t mb_map = NULL; 200 vm_map_t phys_map = NULL; 201 #else 202 vm_map_t buffer_map; 203 #endif 204 205 /* 206 * Declare these as initialized data so we can patch them. 207 */ 208 int nswbuf = 0; 209 #ifdef NBUF 210 int nbuf = NBUF; 211 #else 212 int nbuf = 0; 213 #endif 214 215 #ifndef BUFPAGES 216 #define BUFPAGES 0 217 #endif 218 #ifndef BUFCACHE 219 #define BUFCACHE 10 220 #endif 221 222 int bufpages = BUFPAGES; /* optional hardwired count */ 223 int bufcache = BUFCACHE; /* % of RAM to use for buffer cache */ 224 225 caddr_t msgbufaddr; 226 227 int maxmem; /* max memory per process */ 228 229 int totalphysmem; /* total amount of physical memory in system */ 230 int physmem; /* physical memory used by NetBSD + some rsvd */ 231 int resvmem; /* amount of memory reserved for PROM */ 232 int unusedmem; /* amount of memory for OS that we don't use */ 233 int unknownmem; /* amount of memory with an unknown use */ 234 235 int cputype; /* system type, from the RPB */ 236 237 /* 238 * XXX We need an address to which we can assign things so that they 239 * won't be optimized away because we didn't use the value. 240 */ 241 u_int32_t no_optimize; 242 243 /* the following is used externally (sysctl_hw) */ 244 char machine[] = MACHINE; /* from <machine/param.h> */ 245 char machine_arch[] = MACHINE_ARCH; /* from <machine/param.h> */ 246 char cpu_model[128]; 247 248 struct user *proc0paddr; 249 250 /* Number of machine cycles per microsecond */ 251 u_int64_t cycles_per_usec; 252 253 /* number of cpus in the box. really! */ 254 int ncpus; 255 256 /* machine check info array, valloc()'ed in allocsys() */ 257 258 static struct mchkinfo startup_info, 259 *mchkinfo_all_cpus; 260 261 struct bootinfo_kernel bootinfo; 262 263 /* For built-in TCDS */ 264 #if defined(DEC_3000_300) || defined(DEC_3000_500) 265 u_int8_t dec_3000_scsiid[2], dec_3000_scsifast[2]; 266 #endif 267 268 struct platform platform; 269 270 u_int32_t vm_mbuf_size = _VM_MBUF_SIZE; 271 u_int32_t vm_kmem_size = _VM_KMEM_SIZE; 272 u_int32_t vm_phys_size = _VM_PHYS_SIZE; 273 274 #ifdef DDB 275 /* start and end of kernel symbol table */ 276 void *ksym_start, *ksym_end; 277 #endif 278 279 /* for cpu_sysctl() */ 280 int alpha_unaligned_print = 1; /* warn about unaligned accesses */ 281 int alpha_unaligned_fix = 1; /* fix up unaligned accesses */ 282 int alpha_unaligned_sigbus = 0; /* don't SIGBUS on fixed-up accesses */ 283 284 /* 285 * XXX This should be dynamically sized, but we have the chicken-egg problem! 286 * XXX it should also be larger than it is, because not all of the mddt 287 * XXX clusters end up being used for VM. 288 */ 289 phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX]; /* low size bits overloaded */ 290 int mem_cluster_cnt; 291 292 caddr_t allocsys __P((caddr_t)); 293 int cpu_dump __P((void)); 294 int cpu_dumpsize __P((void)); 295 u_long cpu_dump_mempagecnt __P((void)); 296 void dumpsys __P((void)); 297 void identifycpu __P((void)); 298 void netintr __P((void)); 299 void printregs __P((struct reg *)); 300 301 void 302 alpha_init(pfn, ptb, bim, bip, biv) 303 u_long pfn; /* first free PFN number */ 304 u_long ptb; /* PFN of current level 1 page table */ 305 u_long bim; /* bootinfo magic */ 306 u_long bip; /* bootinfo pointer */ 307 u_long biv; /* bootinfo version */ 308 { 309 extern char kernel_text[], _end[]; 310 struct mddt *mddtp; 311 struct mddt_cluster *memc; 312 int i, mddtweird; 313 struct vm_physseg *vps; 314 vaddr_t kernstart, kernend; 315 paddr_t kernstartpfn, kernendpfn, pfn0, pfn1; 316 vsize_t size; 317 char *p; 318 caddr_t v; 319 char *bootinfo_msg; 320 321 /* NO OUTPUT ALLOWED UNTIL FURTHER NOTICE */ 322 323 /* 324 * Turn off interrupts (not mchecks) and floating point. 325 * Make sure the instruction and data streams are consistent. 326 */ 327 (void)alpha_pal_swpipl(ALPHA_PSL_IPL_HIGH); 328 alpha_pal_wrfen(0); 329 ALPHA_TBIA(); 330 alpha_pal_imb(); 331 332 /* 333 * Get critical system information (if possible, from the 334 * information provided by the boot program). 335 */ 336 bootinfo_msg = NULL; 337 if (bim == BOOTINFO_MAGIC) { 338 if (biv == 0) { /* backward compat */ 339 biv = *(u_long *)bip; 340 bip += 8; 341 } 342 switch (biv) { 343 case 1: { 344 struct bootinfo_v1 *v1p = (struct bootinfo_v1 *)bip; 345 346 bootinfo.ssym = v1p->ssym; 347 bootinfo.esym = v1p->esym; 348 /* hwrpb may not be provided by boot block in v1 */ 349 if (v1p->hwrpb != NULL) { 350 bootinfo.hwrpb_phys = 351 ((struct rpb *)v1p->hwrpb)->rpb_phys; 352 bootinfo.hwrpb_size = v1p->hwrpbsize; 353 } else { 354 bootinfo.hwrpb_phys = 355 ((struct rpb *)HWRPB_ADDR)->rpb_phys; 356 bootinfo.hwrpb_size = 357 ((struct rpb *)HWRPB_ADDR)->rpb_size; 358 } 359 bcopy(v1p->boot_flags, bootinfo.boot_flags, 360 min(sizeof v1p->boot_flags, 361 sizeof bootinfo.boot_flags)); 362 bcopy(v1p->booted_kernel, bootinfo.booted_kernel, 363 min(sizeof v1p->booted_kernel, 364 sizeof bootinfo.booted_kernel)); 365 /* booted dev not provided in bootinfo */ 366 init_prom_interface((struct rpb *) 367 ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys)); 368 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 369 sizeof bootinfo.booted_dev); 370 break; 371 } 372 default: 373 bootinfo_msg = "unknown bootinfo version"; 374 goto nobootinfo; 375 } 376 } else { 377 bootinfo_msg = "boot program did not pass bootinfo"; 378 nobootinfo: 379 bootinfo.ssym = (u_long)_end; 380 bootinfo.esym = (u_long)_end; 381 bootinfo.hwrpb_phys = ((struct rpb *)HWRPB_ADDR)->rpb_phys; 382 bootinfo.hwrpb_size = ((struct rpb *)HWRPB_ADDR)->rpb_size; 383 init_prom_interface((struct rpb *)HWRPB_ADDR); 384 prom_getenv(PROM_E_BOOTED_OSFLAGS, bootinfo.boot_flags, 385 sizeof bootinfo.boot_flags); 386 prom_getenv(PROM_E_BOOTED_FILE, bootinfo.booted_kernel, 387 sizeof bootinfo.booted_kernel); 388 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 389 sizeof bootinfo.booted_dev); 390 } 391 392 /* 393 * Initialize the kernel's mapping of the RPB. It's needed for 394 * lots of things. 395 */ 396 hwrpb = (struct rpb *)ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys); 397 398 #if defined(DEC_3000_300) || defined(DEC_3000_500) 399 if (hwrpb->rpb_type == ST_DEC_3000_300 || 400 hwrpb->rpb_type == ST_DEC_3000_500) { 401 prom_getenv(PROM_E_SCSIID, dec_3000_scsiid, 402 sizeof(dec_3000_scsiid)); 403 prom_getenv(PROM_E_SCSIFAST, dec_3000_scsifast, 404 sizeof(dec_3000_scsifast)); 405 } 406 #endif 407 408 /* 409 * Remember how many cycles there are per microsecond, 410 * so that we can use delay(). Round up, for safety. 411 */ 412 cycles_per_usec = (hwrpb->rpb_cc_freq + 999999) / 1000000; 413 414 /* 415 * Initalize the (temporary) bootstrap console interface, so 416 * we can use printf until the VM system starts being setup. 417 * The real console is initialized before then. 418 */ 419 init_bootstrap_console(); 420 421 /* OUTPUT NOW ALLOWED */ 422 423 /* delayed from above */ 424 if (bootinfo_msg) 425 printf("WARNING: %s (0x%lx, 0x%lx, 0x%lx)\n", 426 bootinfo_msg, bim, bip, biv); 427 428 /* Initialize the trap vectors on the primary processor. */ 429 trap_init(); 430 431 /* 432 * Find out what hardware we're on, and do basic initialization. 433 */ 434 cputype = hwrpb->rpb_type; 435 if (cputype >= ncpuinit) { 436 platform_not_supported(); 437 /* NOTREACHED */ 438 } 439 (*cpuinit[cputype].init)(); 440 strcpy(cpu_model, platform.model); 441 442 /* 443 * Initalize the real console, so the the bootstrap console is 444 * no longer necessary. 445 */ 446 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 447 if (!pmap_uses_prom_console()) 448 #endif 449 (*platform.cons_init)(); 450 451 #ifdef DIAGNOSTIC 452 /* Paranoid sanity checking */ 453 454 /* We should always be running on the the primary. */ 455 assert(hwrpb->rpb_primary_cpu_id == alpha_pal_whami()); 456 457 /* 458 * On single-CPU systypes, the primary should always be CPU 0, 459 * except on Alpha 8200 systems where the CPU id is related 460 * to the VID, which is related to the Turbo Laser node id. 461 */ 462 if (cputype != ST_DEC_21000) 463 assert(hwrpb->rpb_primary_cpu_id == 0); 464 #endif 465 466 /* NO MORE FIRMWARE ACCESS ALLOWED */ 467 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 468 /* 469 * XXX (unless _PMAP_MAY_USE_PROM_CONSOLE is defined and 470 * XXX pmap_uses_prom_console() evaluates to non-zero.) 471 */ 472 #endif 473 474 /* 475 * find out this system's page size 476 */ 477 PAGE_SIZE = hwrpb->rpb_page_size; 478 if (PAGE_SIZE != 8192) 479 panic("page size %d != 8192?!", PAGE_SIZE); 480 481 /* 482 * Initialize PAGE_SIZE-dependent variables. 483 */ 484 #if defined(UVM) 485 uvm_setpagesize(); 486 #else 487 vm_set_page_size(); 488 #endif 489 490 /* 491 * Find the beginning and end of the kernel (and leave a 492 * bit of space before the beginning for the bootstrap 493 * stack). 494 */ 495 kernstart = trunc_page(kernel_text) - 2 * PAGE_SIZE; 496 #ifdef DDB 497 ksym_start = (void *)bootinfo.ssym; 498 ksym_end = (void *)bootinfo.esym; 499 kernend = (vaddr_t)round_page(ksym_end); 500 #else 501 kernend = (vaddr_t)round_page(_end); 502 #endif 503 504 kernstartpfn = atop(ALPHA_K0SEG_TO_PHYS(kernstart)); 505 kernendpfn = atop(ALPHA_K0SEG_TO_PHYS(kernend)); 506 507 /* 508 * Find out how much memory is available, by looking at 509 * the memory cluster descriptors. This also tries to do 510 * its best to detect things things that have never been seen 511 * before... 512 */ 513 mddtp = (struct mddt *)(((caddr_t)hwrpb) + hwrpb->rpb_memdat_off); 514 515 /* MDDT SANITY CHECKING */ 516 mddtweird = 0; 517 if (mddtp->mddt_cluster_cnt < 2) { 518 mddtweird = 1; 519 printf("WARNING: weird number of mem clusters: %lu\n", 520 mddtp->mddt_cluster_cnt); 521 } 522 523 #if 0 524 printf("Memory cluster count: %d\n", mddtp->mddt_cluster_cnt); 525 #endif 526 527 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 528 memc = &mddtp->mddt_clusters[i]; 529 #if 0 530 printf("MEMC %d: pfn 0x%lx cnt 0x%lx usage 0x%lx\n", i, 531 memc->mddt_pfn, memc->mddt_pg_cnt, memc->mddt_usage); 532 #endif 533 totalphysmem += memc->mddt_pg_cnt; 534 if (mem_cluster_cnt < VM_PHYSSEG_MAX) { /* XXX */ 535 mem_clusters[mem_cluster_cnt].start = 536 ptoa(memc->mddt_pfn); 537 mem_clusters[mem_cluster_cnt].size = 538 ptoa(memc->mddt_pg_cnt); 539 if (memc->mddt_usage & MDDT_mbz || 540 memc->mddt_usage & MDDT_NONVOLATILE || /* XXX */ 541 memc->mddt_usage & MDDT_PALCODE) 542 mem_clusters[mem_cluster_cnt].size |= 543 PROT_READ; 544 else 545 mem_clusters[mem_cluster_cnt].size |= 546 PROT_READ | PROT_WRITE | PROT_EXEC; 547 mem_cluster_cnt++; 548 } 549 550 if (memc->mddt_usage & MDDT_mbz) { 551 mddtweird = 1; 552 printf("WARNING: mem cluster %d has weird " 553 "usage 0x%lx\n", i, memc->mddt_usage); 554 unknownmem += memc->mddt_pg_cnt; 555 continue; 556 } 557 if (memc->mddt_usage & MDDT_NONVOLATILE) { 558 /* XXX should handle these... */ 559 printf("WARNING: skipping non-volatile mem " 560 "cluster %d\n", i); 561 unusedmem += memc->mddt_pg_cnt; 562 continue; 563 } 564 if (memc->mddt_usage & MDDT_PALCODE) { 565 resvmem += memc->mddt_pg_cnt; 566 continue; 567 } 568 569 /* 570 * We have a memory cluster available for system 571 * software use. We must determine if this cluster 572 * holds the kernel. 573 */ 574 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 575 /* 576 * XXX If the kernel uses the PROM console, we only use the 577 * XXX memory after the kernel in the first system segment, 578 * XXX to avoid clobbering prom mapping, data, etc. 579 */ 580 if (!pmap_uses_prom_console() || physmem == 0) { 581 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 582 physmem += memc->mddt_pg_cnt; 583 pfn0 = memc->mddt_pfn; 584 pfn1 = memc->mddt_pfn + memc->mddt_pg_cnt; 585 if (pfn0 <= kernstartpfn && kernendpfn <= pfn1) { 586 /* 587 * Must compute the location of the kernel 588 * within the segment. 589 */ 590 #if 0 591 printf("Cluster %d contains kernel\n", i); 592 #endif 593 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 594 if (!pmap_uses_prom_console()) { 595 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 596 if (pfn0 < kernstartpfn) { 597 /* 598 * There is a chunk before the kernel. 599 */ 600 #if 0 601 printf("Loading chunk before kernel: " 602 "0x%lx / 0x%lx\n", pfn0, kernstartpfn); 603 #endif 604 #if defined(UVM) 605 uvm_page_physload(pfn0, kernstartpfn, 606 pfn0, kernstartpfn, VM_FREELIST_DEFAULT); 607 #else 608 vm_page_physload(pfn0, kernstartpfn, 609 pfn0, kernstartpfn); 610 #endif 611 } 612 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 613 } 614 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 615 if (kernendpfn < pfn1) { 616 /* 617 * There is a chunk after the kernel. 618 */ 619 #if 0 620 printf("Loading chunk after kernel: " 621 "0x%lx / 0x%lx\n", kernendpfn, pfn1); 622 #endif 623 #if defined(UVM) 624 uvm_page_physload(kernendpfn, pfn1, 625 kernendpfn, pfn1, VM_FREELIST_DEFAULT); 626 #else 627 vm_page_physload(kernendpfn, pfn1, 628 kernendpfn, pfn1); 629 #endif 630 } 631 } else { 632 /* 633 * Just load this cluster as one chunk. 634 */ 635 #if 0 636 printf("Loading cluster %d: 0x%lx / 0x%lx\n", i, 637 pfn0, pfn1); 638 #endif 639 #if defined(UVM) 640 uvm_page_physload(pfn0, pfn1, pfn0, pfn1, 641 VM_FREELIST_DEFAULT); 642 #else 643 vm_page_physload(pfn0, pfn1, pfn0, pfn1); 644 #endif 645 } 646 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 647 } 648 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 649 } 650 651 /* 652 * Dump out the MDDT if it looks odd... 653 */ 654 if (mddtweird) { 655 printf("\n"); 656 printf("complete memory cluster information:\n"); 657 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 658 printf("mddt %d:\n", i); 659 printf("\tpfn %lx\n", 660 mddtp->mddt_clusters[i].mddt_pfn); 661 printf("\tcnt %lx\n", 662 mddtp->mddt_clusters[i].mddt_pg_cnt); 663 printf("\ttest %lx\n", 664 mddtp->mddt_clusters[i].mddt_pg_test); 665 printf("\tbva %lx\n", 666 mddtp->mddt_clusters[i].mddt_v_bitaddr); 667 printf("\tbpa %lx\n", 668 mddtp->mddt_clusters[i].mddt_p_bitaddr); 669 printf("\tbcksum %lx\n", 670 mddtp->mddt_clusters[i].mddt_bit_cksum); 671 printf("\tusage %lx\n", 672 mddtp->mddt_clusters[i].mddt_usage); 673 } 674 printf("\n"); 675 } 676 677 if (totalphysmem == 0) 678 panic("can't happen: system seems to have no memory!"); 679 680 #ifdef LIMITMEM 681 /* 682 * XXX Kludge so we can run on machines with memory larger 683 * XXX than 1G until all device drivers are converted to 684 * XXX use bus_dma. (Relies on the fact that vm_physmem 685 * XXX sorted in order of increasing addresses.) 686 */ 687 if (vm_physmem[vm_nphysseg - 1].end > atop(LIMITMEM * 1024 * 1024)) { 688 689 printf("******** LIMITING MEMORY TO %dMB **********\n", 690 LIMITMEM); 691 692 do { 693 u_long ovf; 694 695 vps = &vm_physmem[vm_nphysseg - 1]; 696 697 if (vps->start >= atop(LIMITMEM * 1024 * 1024)) { 698 /* 699 * If the start is too high, just drop 700 * the whole segment. 701 * 702 * XXX can start != avail_start in this 703 * XXX case? wouldn't that mean that 704 * XXX some memory was stolen above the 705 * XXX limit? What to do? 706 */ 707 ovf = vps->end - vps->start; 708 vm_nphysseg--; 709 } else { 710 /* 711 * If the start is OK, calculate how much 712 * to drop and drop it. 713 */ 714 ovf = vps->end - atop(LIMITMEM * 1024 * 1024); 715 vps->end -= ovf; 716 vps->avail_end -= ovf; 717 } 718 physmem -= ovf; 719 unusedmem += ovf; 720 } while (vps->end > atop(LIMITMEM * 1024 * 1024)); 721 } 722 #endif /* LIMITMEM */ 723 724 maxmem = physmem; 725 726 #if 0 727 printf("totalphysmem = %d\n", totalphysmem); 728 printf("physmem = %d\n", physmem); 729 printf("resvmem = %d\n", resvmem); 730 printf("unusedmem = %d\n", unusedmem); 731 printf("unknownmem = %d\n", unknownmem); 732 #endif 733 734 /* 735 * Adjust some parameters if the amount of physmem 736 * available would cause us to croak. This is completely 737 * eyeballed and isn't meant to be the final answer. 738 * vm_phys_size is probably the only one to really worry 739 * about. 740 * 741 * It's for booting a GENERIC kernel on a large memory platform. 742 */ 743 if (physmem >= atop(128 * 1024 * 1024)) { 744 vm_mbuf_size <<= 1; 745 vm_kmem_size <<= 3; 746 vm_phys_size <<= 2; 747 } 748 749 /* 750 * Initialize error message buffer (at end of core). 751 */ 752 { 753 size_t sz = round_page(MSGBUFSIZE); 754 755 vps = &vm_physmem[vm_nphysseg - 1]; 756 757 /* shrink so that it'll fit in the last segment */ 758 if ((vps->avail_end - vps->avail_start) < atop(sz)) 759 sz = ptoa(vps->avail_end - vps->avail_start); 760 761 vps->end -= atop(sz); 762 vps->avail_end -= atop(sz); 763 msgbufaddr = (caddr_t) ALPHA_PHYS_TO_K0SEG(ptoa(vps->end)); 764 initmsgbuf(msgbufaddr, sz); 765 766 /* Remove the last segment if it now has no pages. */ 767 if (vps->start == vps->end) 768 vm_nphysseg--; 769 770 /* warn if the message buffer had to be shrunk */ 771 if (sz != round_page(MSGBUFSIZE)) 772 printf("WARNING: %ld bytes not available for msgbuf in last cluster (%ld used)\n", 773 round_page(MSGBUFSIZE), sz); 774 775 } 776 777 /* 778 * Init mapping for u page(s) for proc 0 779 */ 780 proc0.p_addr = proc0paddr = 781 (struct user *)pmap_steal_memory(UPAGES * PAGE_SIZE, NULL, NULL); 782 783 /* 784 * Allocate space for system data structures. These data structures 785 * are allocated here instead of cpu_startup() because physical 786 * memory is directly addressable. We don't have to map these into 787 * virtual address space. 788 */ 789 size = (vsize_t)allocsys(0); 790 v = (caddr_t)pmap_steal_memory(size, NULL, NULL); 791 if ((allocsys(v) - v) != size) 792 panic("alpha_init: table size inconsistency"); 793 794 /* 795 * Initialize the virtual memory system, and set the 796 * page table base register in proc 0's PCB. 797 */ 798 pmap_bootstrap(ALPHA_PHYS_TO_K0SEG(ptb << PGSHIFT), 799 hwrpb->rpb_max_asn, hwrpb->rpb_pcs_cnt); 800 801 /* 802 * Initialize the rest of proc 0's PCB, and cache its physical 803 * address. 804 */ 805 proc0.p_md.md_pcbpaddr = 806 (struct pcb *)ALPHA_K0SEG_TO_PHYS((vaddr_t)&proc0paddr->u_pcb); 807 808 /* 809 * Set the kernel sp, reserving space for an (empty) trapframe, 810 * and make proc0's trapframe pointer point to it for sanity. 811 */ 812 proc0paddr->u_pcb.pcb_hw.apcb_ksp = 813 (u_int64_t)proc0paddr + USPACE - sizeof(struct trapframe); 814 proc0.p_md.md_tf = 815 (struct trapframe *)proc0paddr->u_pcb.pcb_hw.apcb_ksp; 816 817 /* 818 * Look at arguments passed to us and compute boothowto. 819 */ 820 821 boothowto = RB_SINGLE; 822 #ifdef KADB 823 boothowto |= RB_KDB; 824 #endif 825 for (p = bootinfo.boot_flags; p && *p != '\0'; p++) { 826 /* 827 * Note that we'd really like to differentiate case here, 828 * but the Alpha AXP Architecture Reference Manual 829 * says that we shouldn't. 830 */ 831 switch (*p) { 832 case 'a': /* autoboot */ 833 case 'A': 834 boothowto &= ~RB_SINGLE; 835 break; 836 837 #ifdef DEBUG 838 case 'c': /* crash dump immediately after autoconfig */ 839 case 'C': 840 boothowto |= RB_DUMP; 841 break; 842 #endif 843 844 #if defined(KGDB) || defined(DDB) 845 case 'd': /* break into the kernel debugger ASAP */ 846 case 'D': 847 boothowto |= RB_KDB; 848 break; 849 #endif 850 851 case 'h': /* always halt, never reboot */ 852 case 'H': 853 boothowto |= RB_HALT; 854 break; 855 856 #if 0 857 case 'm': /* mini root present in memory */ 858 case 'M': 859 boothowto |= RB_MINIROOT; 860 break; 861 #endif 862 863 case 'n': /* askname */ 864 case 'N': 865 boothowto |= RB_ASKNAME; 866 break; 867 868 case 's': /* single-user (default, supported for sanity) */ 869 case 'S': 870 boothowto |= RB_SINGLE; 871 break; 872 873 case '-': 874 /* 875 * Just ignore this. It's not required, but it's 876 * common for it to be passed regardless. 877 */ 878 break; 879 880 default: 881 printf("Unrecognized boot flag '%c'.\n", *p); 882 break; 883 } 884 } 885 886 887 /* 888 * Figure out the number of cpus in the box, from RPB fields. 889 * Really. We mean it. 890 */ 891 for (i = 0; i < hwrpb->rpb_pcs_cnt; i++) { 892 struct pcs *pcsp; 893 894 pcsp = LOCATE_PCS(hwrpb, i); 895 if ((pcsp->pcs_flags & PCS_PP) != 0) 896 ncpus++; 897 } 898 899 /* 900 * Initialize debuggers, and break into them if appropriate. 901 */ 902 #ifdef DDB 903 db_machine_init(); 904 ddb_init((int)((u_int64_t)ksym_end - (u_int64_t)ksym_start), 905 ksym_start, ksym_end); 906 if (boothowto & RB_KDB) 907 Debugger(); 908 #endif 909 #ifdef KGDB 910 if (boothowto & RB_KDB) 911 kgdb_connect(0); 912 #endif 913 /* 914 * Figure out our clock frequency, from RPB fields. 915 */ 916 hz = hwrpb->rpb_intr_freq >> 12; 917 if (!(60 <= hz && hz <= 10240)) { 918 hz = 1024; 919 #ifdef DIAGNOSTIC 920 printf("WARNING: unbelievable rpb_intr_freq: %ld (%d hz)\n", 921 hwrpb->rpb_intr_freq, hz); 922 #endif 923 } 924 } 925 926 /* 927 * Allocate space for system data structures. We are given 928 * a starting virtual address and we return a final virtual 929 * address; along the way we set each data structure pointer. 930 * 931 * We call allocsys() with 0 to find out how much space we want, 932 * allocate that much and fill it with zeroes, and the call 933 * allocsys() again with the correct base virtual address. 934 */ 935 caddr_t 936 allocsys(v) 937 caddr_t v; 938 { 939 940 #define valloc(name, type, num) \ 941 (name) = (type *)v; v = (caddr_t)ALIGN((name)+(num)) 942 943 #ifdef REAL_CLISTS 944 valloc(cfree, struct cblock, nclist); 945 #endif 946 valloc(callout, struct callout, ncallout); 947 #ifdef SYSVSHM 948 valloc(shmsegs, struct shmid_ds, shminfo.shmmni); 949 #endif 950 #ifdef SYSVSEM 951 valloc(sema, struct semid_ds, seminfo.semmni); 952 valloc(sem, struct sem, seminfo.semmns); 953 /* This is pretty disgusting! */ 954 valloc(semu, int, (seminfo.semmnu * seminfo.semusz) / sizeof(int)); 955 #endif 956 #ifdef SYSVMSG 957 valloc(msgpool, char, msginfo.msgmax); 958 valloc(msgmaps, struct msgmap, msginfo.msgseg); 959 valloc(msghdrs, struct msg, msginfo.msgtql); 960 valloc(msqids, struct msqid_ds, msginfo.msgmni); 961 #endif 962 963 /* 964 * Determine how many buffers to allocate. 965 * We allocate bufcache % of memory for buffer space. Insure a 966 * minimum of 16 buffers. We allocate 1/2 as many swap buffer 967 * headers as file i/o buffers. 968 */ 969 if (bufpages == 0) 970 bufpages = physmem / CLSIZE * bufcache / 100; 971 if (nbuf == 0) { 972 nbuf = bufpages; 973 if (nbuf < 16) 974 nbuf = 16; 975 } 976 if (nswbuf == 0) { 977 nswbuf = (nbuf / 2) &~ 1; /* force even */ 978 if (nswbuf > 256) 979 nswbuf = 256; /* sanity */ 980 } 981 #if !defined(UVM) 982 valloc(swbuf, struct buf, nswbuf); 983 #endif 984 valloc(buf, struct buf, nbuf); 985 986 /* 987 * There appears to be a correlation between the number 988 * of processor slots defined in the HWRPB and the whami 989 * value that can be returned. 990 */ 991 valloc(mchkinfo_all_cpus, struct mchkinfo, hwrpb->rpb_pcs_cnt); 992 993 return (v); 994 #undef valloc 995 } 996 997 void 998 consinit() 999 { 1000 1001 /* 1002 * Everything related to console initialization is done 1003 * in alpha_init(). 1004 */ 1005 #if defined(DIAGNOSTIC) && defined(_PMAP_MAY_USE_PROM_CONSOLE) 1006 printf("consinit: %susing prom console\n", 1007 pmap_uses_prom_console() ? "" : "not "); 1008 #endif 1009 } 1010 1011 #include "pckbc.h" 1012 #include "pckbd.h" 1013 #if (NPCKBC > 0) && (NPCKBD == 0) 1014 1015 #include <dev/isa/pckbcvar.h> 1016 1017 /* 1018 * This is called by the pbkbc driver if no pckbd is configured. 1019 * On the i386, it is used to glue in the old, deprecated console 1020 * code. On the Alpha, it does nothing. 1021 */ 1022 int 1023 pckbc_machdep_cnattach(kbctag, kbcslot) 1024 pckbc_tag_t kbctag; 1025 pckbc_slot_t kbcslot; 1026 { 1027 1028 return (ENXIO); 1029 } 1030 #endif /* NPCKBC > 0 && NPCKBD == 0 */ 1031 1032 void 1033 cpu_startup() 1034 { 1035 register unsigned i; 1036 int base, residual; 1037 vaddr_t minaddr, maxaddr; 1038 vsize_t size; 1039 #if defined(DEBUG) 1040 extern int pmapdebug; 1041 int opmapdebug = pmapdebug; 1042 1043 pmapdebug = 0; 1044 #endif 1045 1046 /* 1047 * Good {morning,afternoon,evening,night}. 1048 */ 1049 printf(version); 1050 identifycpu(); 1051 printf("real mem = %lu (%lu reserved for PROM, %lu used by NetBSD)\n", 1052 ((psize_t) totalphysmem << (psize_t) PAGE_SHIFT), 1053 ptoa(resvmem), ptoa(physmem)); 1054 if (unusedmem) 1055 printf("WARNING: unused memory = %d bytes\n", ctob(unusedmem)); 1056 if (unknownmem) 1057 printf("WARNING: %d bytes of memory with unknown purpose\n", 1058 ctob(unknownmem)); 1059 1060 /* 1061 * Allocate virtual address space for file I/O buffers. 1062 * Note they are different than the array of headers, 'buf', 1063 * and usually occupy more virtual memory than physical. 1064 */ 1065 size = MAXBSIZE * nbuf; 1066 #if defined(UVM) 1067 if (uvm_map(kernel_map, (vaddr_t *) &buffers, round_page(size), 1068 NULL, UVM_UNKNOWN_OFFSET, 1069 UVM_MAPFLAG(UVM_PROT_NONE, UVM_PROT_NONE, UVM_INH_NONE, 1070 UVM_ADV_NORMAL, 0)) != KERN_SUCCESS) 1071 panic("startup: cannot allocate VM for buffers"); 1072 #else 1073 buffer_map = kmem_suballoc(kernel_map, (vaddr_t *)&buffers, 1074 &maxaddr, size, TRUE); 1075 minaddr = (vaddr_t)buffers; 1076 if (vm_map_find(buffer_map, vm_object_allocate(size), (vaddr_t)0, 1077 &minaddr, size, FALSE) != KERN_SUCCESS) 1078 panic("startup: cannot allocate buffers"); 1079 #endif /* UVM */ 1080 base = bufpages / nbuf; 1081 residual = bufpages % nbuf; 1082 for (i = 0; i < nbuf; i++) { 1083 #if defined(UVM) 1084 vsize_t curbufsize; 1085 vaddr_t curbuf; 1086 struct vm_page *pg; 1087 1088 /* 1089 * Each buffer has MAXBSIZE bytes of VM space allocated. Of 1090 * that MAXBSIZE space, we allocate and map (base+1) pages 1091 * for the first "residual" buffers, and then we allocate 1092 * "base" pages for the rest. 1093 */ 1094 curbuf = (vaddr_t) buffers + (i * MAXBSIZE); 1095 curbufsize = CLBYTES * ((i < residual) ? (base+1) : base); 1096 1097 while (curbufsize) { 1098 pg = uvm_pagealloc(NULL, 0, NULL); 1099 if (pg == NULL) 1100 panic("cpu_startup: not enough memory for " 1101 "buffer cache"); 1102 #if defined(PMAP_NEW) 1103 pmap_kenter_pgs(curbuf, &pg, 1); 1104 #else 1105 pmap_enter(kernel_map->pmap, curbuf, 1106 VM_PAGE_TO_PHYS(pg), VM_PROT_ALL, TRUE); 1107 #endif 1108 curbuf += PAGE_SIZE; 1109 curbufsize -= PAGE_SIZE; 1110 } 1111 #else /* ! UVM */ 1112 vsize_t curbufsize; 1113 vaddr_t curbuf; 1114 1115 /* 1116 * First <residual> buffers get (base+1) physical pages 1117 * allocated for them. The rest get (base) physical pages. 1118 * 1119 * The rest of each buffer occupies virtual space, 1120 * but has no physical memory allocated for it. 1121 */ 1122 curbuf = (vaddr_t)buffers + i * MAXBSIZE; 1123 curbufsize = CLBYTES * (i < residual ? base+1 : base); 1124 vm_map_pageable(buffer_map, curbuf, curbuf+curbufsize, FALSE); 1125 vm_map_simplify(buffer_map, curbuf); 1126 #endif /* UVM */ 1127 } 1128 /* 1129 * Allocate a submap for exec arguments. This map effectively 1130 * limits the number of processes exec'ing at any time. 1131 */ 1132 #if defined(UVM) 1133 exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 1134 16 * NCARGS, TRUE, FALSE, NULL); 1135 #else 1136 exec_map = kmem_suballoc(kernel_map, &minaddr, &maxaddr, 1137 16 * NCARGS, TRUE); 1138 #endif 1139 1140 /* 1141 * Allocate a submap for physio 1142 */ 1143 #if defined(UVM) 1144 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 1145 VM_PHYS_SIZE, TRUE, FALSE, NULL); 1146 #else 1147 phys_map = kmem_suballoc(kernel_map, &minaddr, &maxaddr, 1148 VM_PHYS_SIZE, TRUE); 1149 #endif 1150 1151 /* 1152 * Finally, allocate mbuf cluster submap. 1153 */ 1154 #if defined(UVM) 1155 mb_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 1156 VM_MBUF_SIZE, FALSE, FALSE, NULL); 1157 #else 1158 mb_map = kmem_suballoc(kernel_map, &minaddr, &maxaddr, 1159 VM_MBUF_SIZE, FALSE); 1160 #endif 1161 /* 1162 * Initialize callouts 1163 */ 1164 callfree = callout; 1165 for (i = 1; i < ncallout; i++) 1166 callout[i-1].c_next = &callout[i]; 1167 callout[i-1].c_next = NULL; 1168 1169 #if defined(DEBUG) 1170 pmapdebug = opmapdebug; 1171 #endif 1172 #if defined(UVM) 1173 printf("avail mem = %ld\n", (long)ptoa(uvmexp.free)); 1174 #else 1175 printf("avail mem = %ld\n", (long)ptoa(cnt.v_free_count)); 1176 #endif 1177 #if 0 1178 { 1179 extern u_long pmap_pages_stolen; 1180 printf("stolen memory for VM structures = %ld bytes\n", 1181 pmap_pages_stolen * PAGE_SIZE); 1182 } 1183 #endif 1184 printf("using %ld buffers containing %ld bytes of memory\n", 1185 (long)nbuf, (long)(bufpages * CLBYTES)); 1186 1187 /* 1188 * Set up buffers, so they can be used to read disk labels. 1189 */ 1190 bufinit(); 1191 1192 /* 1193 * Set up the HWPCB so that it's safe to configure secondary 1194 * CPUs. 1195 */ 1196 hwrpb_primary_init(); 1197 1198 /* 1199 * Configure the system. 1200 */ 1201 configure(); 1202 } 1203 1204 /* 1205 * Retrieve the platform name from the DSR. 1206 */ 1207 const char * 1208 alpha_dsr_sysname() 1209 { 1210 struct dsrdb *dsr; 1211 const char *sysname; 1212 1213 /* 1214 * DSR does not exist on early HWRPB versions. 1215 */ 1216 if (hwrpb->rpb_version < HWRPB_DSRDB_MINVERS) 1217 return (NULL); 1218 1219 dsr = (struct dsrdb *)(((caddr_t)hwrpb) + hwrpb->rpb_dsrdb_off); 1220 sysname = (const char *)((caddr_t)dsr + (dsr->dsr_sysname_off + 1221 sizeof(u_int64_t))); 1222 return (sysname); 1223 } 1224 1225 /* 1226 * Lookup the system specified system variation in the provided table, 1227 * returning the model string on match. 1228 */ 1229 const char * 1230 alpha_variation_name(variation, avtp) 1231 u_int64_t variation; 1232 const struct alpha_variation_table *avtp; 1233 { 1234 int i; 1235 1236 for (i = 0; avtp[i].avt_model != NULL; i++) 1237 if (avtp[i].avt_variation == variation) 1238 return (avtp[i].avt_model); 1239 return (NULL); 1240 } 1241 1242 /* 1243 * Generate a default platform name based for unknown system variations. 1244 */ 1245 const char * 1246 alpha_unknown_sysname() 1247 { 1248 static char s[128]; /* safe size */ 1249 1250 sprintf(s, "%s family, unknown model variation 0x%lx", 1251 platform.family, hwrpb->rpb_variation & SV_ST_MASK); 1252 return ((const char *)s); 1253 } 1254 1255 void 1256 identifycpu() 1257 { 1258 1259 /* 1260 * print out CPU identification information. 1261 */ 1262 printf("%s, %ldMHz\n", cpu_model, 1263 hwrpb->rpb_cc_freq / 1000000); /* XXX true for 21164? */ 1264 printf("%ld byte page size, %d processor%s.\n", 1265 hwrpb->rpb_page_size, ncpus, ncpus == 1 ? "" : "s"); 1266 #if 0 1267 /* this isn't defined for any systems that we run on? */ 1268 printf("serial number 0x%lx 0x%lx\n", 1269 ((long *)hwrpb->rpb_ssn)[0], ((long *)hwrpb->rpb_ssn)[1]); 1270 1271 /* and these aren't particularly useful! */ 1272 printf("variation: 0x%lx, revision 0x%lx\n", 1273 hwrpb->rpb_variation, *(long *)hwrpb->rpb_revision); 1274 #endif 1275 } 1276 1277 int waittime = -1; 1278 struct pcb dumppcb; 1279 1280 void 1281 cpu_reboot(howto, bootstr) 1282 int howto; 1283 char *bootstr; 1284 { 1285 extern int cold; 1286 #if defined(MULTIPROCESSOR) 1287 #if 0 /* XXX See below. */ 1288 u_long cpu_id; 1289 #endif 1290 #endif 1291 1292 #if defined(MULTIPROCESSOR) 1293 /* We must be running on the primary CPU. */ 1294 if (alpha_pal_whami() != hwrpb->rpb_primary_cpu_id) 1295 panic("cpu_reboot: not on primary CPU!"); 1296 #endif 1297 1298 /* If system is cold, just halt. */ 1299 if (cold) { 1300 howto |= RB_HALT; 1301 goto haltsys; 1302 } 1303 1304 /* If "always halt" was specified as a boot flag, obey. */ 1305 if ((boothowto & RB_HALT) != 0) 1306 howto |= RB_HALT; 1307 1308 boothowto = howto; 1309 if ((howto & RB_NOSYNC) == 0 && waittime < 0) { 1310 waittime = 0; 1311 vfs_shutdown(); 1312 /* 1313 * If we've been adjusting the clock, the todr 1314 * will be out of synch; adjust it now. 1315 */ 1316 resettodr(); 1317 } 1318 1319 /* Disable interrupts. */ 1320 splhigh(); 1321 1322 /* If rebooting and a dump is requested do it. */ 1323 #if 0 1324 if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP) 1325 #else 1326 if (howto & RB_DUMP) 1327 #endif 1328 dumpsys(); 1329 1330 haltsys: 1331 1332 /* run any shutdown hooks */ 1333 doshutdownhooks(); 1334 1335 #if defined(MULTIPROCESSOR) 1336 #if 0 /* XXX doesn't work when called from here?! */ 1337 /* Kill off any secondary CPUs. */ 1338 for (cpu_id = 0; cpu_id < hwrpb->rpb_pcs_cnt; cpu_id++) { 1339 if (cpu_id == hwrpb->rpb_primary_cpu_id || 1340 cpus[cpu_id] == NULL) 1341 continue; 1342 cpu_halt_secondary(cpu_id); 1343 } 1344 #endif 1345 #endif 1346 1347 #ifdef BOOTKEY 1348 printf("hit any key to %s...\n", howto & RB_HALT ? "halt" : "reboot"); 1349 cnpollc(1); /* for proper keyboard command handling */ 1350 cngetc(); 1351 cnpollc(0); 1352 printf("\n"); 1353 #endif 1354 1355 /* Finally, powerdown/halt/reboot the system. */ 1356 if ((howto && RB_POWERDOWN) == RB_POWERDOWN && 1357 platform.powerdown != NULL) { 1358 (*platform.powerdown)(); 1359 printf("WARNING: powerdown failed!\n"); 1360 } 1361 printf("%s\n\n", howto & RB_HALT ? "halted." : "rebooting..."); 1362 prom_halt(howto & RB_HALT); 1363 /*NOTREACHED*/ 1364 } 1365 1366 /* 1367 * These variables are needed by /sbin/savecore 1368 */ 1369 u_long dumpmag = 0x8fca0101; /* magic number */ 1370 int dumpsize = 0; /* pages */ 1371 long dumplo = 0; /* blocks */ 1372 1373 /* 1374 * cpu_dumpsize: calculate size of machine-dependent kernel core dump headers. 1375 */ 1376 int 1377 cpu_dumpsize() 1378 { 1379 int size; 1380 1381 size = ALIGN(sizeof(kcore_seg_t)) + ALIGN(sizeof(cpu_kcore_hdr_t)) + 1382 ALIGN(mem_cluster_cnt * sizeof(phys_ram_seg_t)); 1383 if (roundup(size, dbtob(1)) != dbtob(1)) 1384 return -1; 1385 1386 return (1); 1387 } 1388 1389 /* 1390 * cpu_dump_mempagecnt: calculate size of RAM (in pages) to be dumped. 1391 */ 1392 u_long 1393 cpu_dump_mempagecnt() 1394 { 1395 u_long i, n; 1396 1397 n = 0; 1398 for (i = 0; i < mem_cluster_cnt; i++) 1399 n += atop(mem_clusters[i].size); 1400 return (n); 1401 } 1402 1403 /* 1404 * cpu_dump: dump machine-dependent kernel core dump headers. 1405 */ 1406 int 1407 cpu_dump() 1408 { 1409 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1410 char buf[dbtob(1)]; 1411 kcore_seg_t *segp; 1412 cpu_kcore_hdr_t *cpuhdrp; 1413 phys_ram_seg_t *memsegp; 1414 int i; 1415 1416 dump = bdevsw[major(dumpdev)].d_dump; 1417 1418 bzero(buf, sizeof buf); 1419 segp = (kcore_seg_t *)buf; 1420 cpuhdrp = (cpu_kcore_hdr_t *)&buf[ALIGN(sizeof(*segp))]; 1421 memsegp = (phys_ram_seg_t *)&buf[ ALIGN(sizeof(*segp)) + 1422 ALIGN(sizeof(*cpuhdrp))]; 1423 1424 /* 1425 * Generate a segment header. 1426 */ 1427 CORE_SETMAGIC(*segp, KCORE_MAGIC, MID_MACHINE, CORE_CPU); 1428 segp->c_size = dbtob(1) - ALIGN(sizeof(*segp)); 1429 1430 /* 1431 * Add the machine-dependent header info. 1432 */ 1433 cpuhdrp->lev1map_pa = ALPHA_K0SEG_TO_PHYS((vaddr_t)kernel_lev1map); 1434 cpuhdrp->page_size = PAGE_SIZE; 1435 cpuhdrp->nmemsegs = mem_cluster_cnt; 1436 1437 /* 1438 * Fill in the memory segment descriptors. 1439 */ 1440 for (i = 0; i < mem_cluster_cnt; i++) { 1441 memsegp[i].start = mem_clusters[i].start; 1442 memsegp[i].size = mem_clusters[i].size & ~PAGE_MASK; 1443 } 1444 1445 return (dump(dumpdev, dumplo, (caddr_t)buf, dbtob(1))); 1446 } 1447 1448 /* 1449 * This is called by main to set dumplo and dumpsize. 1450 * Dumps always skip the first CLBYTES of disk space 1451 * in case there might be a disk label stored there. 1452 * If there is extra space, put dump at the end to 1453 * reduce the chance that swapping trashes it. 1454 */ 1455 void 1456 cpu_dumpconf() 1457 { 1458 int nblks, dumpblks; /* size of dump area */ 1459 int maj; 1460 1461 if (dumpdev == NODEV) 1462 goto bad; 1463 maj = major(dumpdev); 1464 if (maj < 0 || maj >= nblkdev) 1465 panic("dumpconf: bad dumpdev=0x%x", dumpdev); 1466 if (bdevsw[maj].d_psize == NULL) 1467 goto bad; 1468 nblks = (*bdevsw[maj].d_psize)(dumpdev); 1469 if (nblks <= ctod(1)) 1470 goto bad; 1471 1472 dumpblks = cpu_dumpsize(); 1473 if (dumpblks < 0) 1474 goto bad; 1475 dumpblks += ctod(cpu_dump_mempagecnt()); 1476 1477 /* If dump won't fit (incl. room for possible label), punt. */ 1478 if (dumpblks > (nblks - ctod(1))) 1479 goto bad; 1480 1481 /* Put dump at end of partition */ 1482 dumplo = nblks - dumpblks; 1483 1484 /* dumpsize is in page units, and doesn't include headers. */ 1485 dumpsize = cpu_dump_mempagecnt(); 1486 return; 1487 1488 bad: 1489 dumpsize = 0; 1490 return; 1491 } 1492 1493 /* 1494 * Dump the kernel's image to the swap partition. 1495 */ 1496 #define BYTES_PER_DUMP NBPG 1497 1498 void 1499 dumpsys() 1500 { 1501 u_long totalbytesleft, bytes, i, n, memcl; 1502 u_long maddr; 1503 int psize; 1504 daddr_t blkno; 1505 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1506 int error; 1507 1508 /* Save registers. */ 1509 savectx(&dumppcb); 1510 1511 msgbufenabled = 0; /* don't record dump msgs in msgbuf */ 1512 if (dumpdev == NODEV) 1513 return; 1514 1515 /* 1516 * For dumps during autoconfiguration, 1517 * if dump device has already configured... 1518 */ 1519 if (dumpsize == 0) 1520 cpu_dumpconf(); 1521 if (dumplo <= 0) { 1522 printf("\ndump to dev %u,%u not possible\n", major(dumpdev), 1523 minor(dumpdev)); 1524 return; 1525 } 1526 printf("\ndumping to dev %u,%u offset %ld\n", major(dumpdev), 1527 minor(dumpdev), dumplo); 1528 1529 psize = (*bdevsw[major(dumpdev)].d_psize)(dumpdev); 1530 printf("dump "); 1531 if (psize == -1) { 1532 printf("area unavailable\n"); 1533 return; 1534 } 1535 1536 /* XXX should purge all outstanding keystrokes. */ 1537 1538 if ((error = cpu_dump()) != 0) 1539 goto err; 1540 1541 totalbytesleft = ptoa(cpu_dump_mempagecnt()); 1542 blkno = dumplo + cpu_dumpsize(); 1543 dump = bdevsw[major(dumpdev)].d_dump; 1544 error = 0; 1545 1546 for (memcl = 0; memcl < mem_cluster_cnt; memcl++) { 1547 maddr = mem_clusters[memcl].start; 1548 bytes = mem_clusters[memcl].size & ~PAGE_MASK; 1549 1550 for (i = 0; i < bytes; i += n, totalbytesleft -= n) { 1551 1552 /* Print out how many MBs we to go. */ 1553 if ((totalbytesleft % (1024*1024)) == 0) 1554 printf("%ld ", totalbytesleft / (1024 * 1024)); 1555 1556 /* Limit size for next transfer. */ 1557 n = bytes - i; 1558 if (n > BYTES_PER_DUMP) 1559 n = BYTES_PER_DUMP; 1560 1561 error = (*dump)(dumpdev, blkno, 1562 (caddr_t)ALPHA_PHYS_TO_K0SEG(maddr), n); 1563 if (error) 1564 goto err; 1565 maddr += n; 1566 blkno += btodb(n); /* XXX? */ 1567 1568 /* XXX should look for keystrokes, to cancel. */ 1569 } 1570 } 1571 1572 err: 1573 switch (error) { 1574 1575 case ENXIO: 1576 printf("device bad\n"); 1577 break; 1578 1579 case EFAULT: 1580 printf("device not ready\n"); 1581 break; 1582 1583 case EINVAL: 1584 printf("area improper\n"); 1585 break; 1586 1587 case EIO: 1588 printf("i/o error\n"); 1589 break; 1590 1591 case EINTR: 1592 printf("aborted from console\n"); 1593 break; 1594 1595 case 0: 1596 printf("succeeded\n"); 1597 break; 1598 1599 default: 1600 printf("error %d\n", error); 1601 break; 1602 } 1603 printf("\n\n"); 1604 delay(1000); 1605 } 1606 1607 void 1608 frametoreg(framep, regp) 1609 struct trapframe *framep; 1610 struct reg *regp; 1611 { 1612 1613 regp->r_regs[R_V0] = framep->tf_regs[FRAME_V0]; 1614 regp->r_regs[R_T0] = framep->tf_regs[FRAME_T0]; 1615 regp->r_regs[R_T1] = framep->tf_regs[FRAME_T1]; 1616 regp->r_regs[R_T2] = framep->tf_regs[FRAME_T2]; 1617 regp->r_regs[R_T3] = framep->tf_regs[FRAME_T3]; 1618 regp->r_regs[R_T4] = framep->tf_regs[FRAME_T4]; 1619 regp->r_regs[R_T5] = framep->tf_regs[FRAME_T5]; 1620 regp->r_regs[R_T6] = framep->tf_regs[FRAME_T6]; 1621 regp->r_regs[R_T7] = framep->tf_regs[FRAME_T7]; 1622 regp->r_regs[R_S0] = framep->tf_regs[FRAME_S0]; 1623 regp->r_regs[R_S1] = framep->tf_regs[FRAME_S1]; 1624 regp->r_regs[R_S2] = framep->tf_regs[FRAME_S2]; 1625 regp->r_regs[R_S3] = framep->tf_regs[FRAME_S3]; 1626 regp->r_regs[R_S4] = framep->tf_regs[FRAME_S4]; 1627 regp->r_regs[R_S5] = framep->tf_regs[FRAME_S5]; 1628 regp->r_regs[R_S6] = framep->tf_regs[FRAME_S6]; 1629 regp->r_regs[R_A0] = framep->tf_regs[FRAME_A0]; 1630 regp->r_regs[R_A1] = framep->tf_regs[FRAME_A1]; 1631 regp->r_regs[R_A2] = framep->tf_regs[FRAME_A2]; 1632 regp->r_regs[R_A3] = framep->tf_regs[FRAME_A3]; 1633 regp->r_regs[R_A4] = framep->tf_regs[FRAME_A4]; 1634 regp->r_regs[R_A5] = framep->tf_regs[FRAME_A5]; 1635 regp->r_regs[R_T8] = framep->tf_regs[FRAME_T8]; 1636 regp->r_regs[R_T9] = framep->tf_regs[FRAME_T9]; 1637 regp->r_regs[R_T10] = framep->tf_regs[FRAME_T10]; 1638 regp->r_regs[R_T11] = framep->tf_regs[FRAME_T11]; 1639 regp->r_regs[R_RA] = framep->tf_regs[FRAME_RA]; 1640 regp->r_regs[R_T12] = framep->tf_regs[FRAME_T12]; 1641 regp->r_regs[R_AT] = framep->tf_regs[FRAME_AT]; 1642 regp->r_regs[R_GP] = framep->tf_regs[FRAME_GP]; 1643 /* regp->r_regs[R_SP] = framep->tf_regs[FRAME_SP]; XXX */ 1644 regp->r_regs[R_ZERO] = 0; 1645 } 1646 1647 void 1648 regtoframe(regp, framep) 1649 struct reg *regp; 1650 struct trapframe *framep; 1651 { 1652 1653 framep->tf_regs[FRAME_V0] = regp->r_regs[R_V0]; 1654 framep->tf_regs[FRAME_T0] = regp->r_regs[R_T0]; 1655 framep->tf_regs[FRAME_T1] = regp->r_regs[R_T1]; 1656 framep->tf_regs[FRAME_T2] = regp->r_regs[R_T2]; 1657 framep->tf_regs[FRAME_T3] = regp->r_regs[R_T3]; 1658 framep->tf_regs[FRAME_T4] = regp->r_regs[R_T4]; 1659 framep->tf_regs[FRAME_T5] = regp->r_regs[R_T5]; 1660 framep->tf_regs[FRAME_T6] = regp->r_regs[R_T6]; 1661 framep->tf_regs[FRAME_T7] = regp->r_regs[R_T7]; 1662 framep->tf_regs[FRAME_S0] = regp->r_regs[R_S0]; 1663 framep->tf_regs[FRAME_S1] = regp->r_regs[R_S1]; 1664 framep->tf_regs[FRAME_S2] = regp->r_regs[R_S2]; 1665 framep->tf_regs[FRAME_S3] = regp->r_regs[R_S3]; 1666 framep->tf_regs[FRAME_S4] = regp->r_regs[R_S4]; 1667 framep->tf_regs[FRAME_S5] = regp->r_regs[R_S5]; 1668 framep->tf_regs[FRAME_S6] = regp->r_regs[R_S6]; 1669 framep->tf_regs[FRAME_A0] = regp->r_regs[R_A0]; 1670 framep->tf_regs[FRAME_A1] = regp->r_regs[R_A1]; 1671 framep->tf_regs[FRAME_A2] = regp->r_regs[R_A2]; 1672 framep->tf_regs[FRAME_A3] = regp->r_regs[R_A3]; 1673 framep->tf_regs[FRAME_A4] = regp->r_regs[R_A4]; 1674 framep->tf_regs[FRAME_A5] = regp->r_regs[R_A5]; 1675 framep->tf_regs[FRAME_T8] = regp->r_regs[R_T8]; 1676 framep->tf_regs[FRAME_T9] = regp->r_regs[R_T9]; 1677 framep->tf_regs[FRAME_T10] = regp->r_regs[R_T10]; 1678 framep->tf_regs[FRAME_T11] = regp->r_regs[R_T11]; 1679 framep->tf_regs[FRAME_RA] = regp->r_regs[R_RA]; 1680 framep->tf_regs[FRAME_T12] = regp->r_regs[R_T12]; 1681 framep->tf_regs[FRAME_AT] = regp->r_regs[R_AT]; 1682 framep->tf_regs[FRAME_GP] = regp->r_regs[R_GP]; 1683 /* framep->tf_regs[FRAME_SP] = regp->r_regs[R_SP]; XXX */ 1684 /* ??? = regp->r_regs[R_ZERO]; */ 1685 } 1686 1687 void 1688 printregs(regp) 1689 struct reg *regp; 1690 { 1691 int i; 1692 1693 for (i = 0; i < 32; i++) 1694 printf("R%d:\t0x%016lx%s", i, regp->r_regs[i], 1695 i & 1 ? "\n" : "\t"); 1696 } 1697 1698 void 1699 regdump(framep) 1700 struct trapframe *framep; 1701 { 1702 struct reg reg; 1703 1704 frametoreg(framep, ®); 1705 reg.r_regs[R_SP] = alpha_pal_rdusp(); 1706 1707 printf("REGISTERS:\n"); 1708 printregs(®); 1709 } 1710 1711 #ifdef DEBUG 1712 int sigdebug = 0; 1713 int sigpid = 0; 1714 #define SDB_FOLLOW 0x01 1715 #define SDB_KSTACK 0x02 1716 #endif 1717 1718 /* 1719 * Send an interrupt to process. 1720 */ 1721 void 1722 sendsig(catcher, sig, mask, code) 1723 sig_t catcher; 1724 int sig; 1725 sigset_t *mask; 1726 u_long code; 1727 { 1728 struct proc *p = curproc; 1729 struct sigcontext *scp, ksc; 1730 struct trapframe *frame; 1731 struct sigacts *psp = p->p_sigacts; 1732 int onstack, fsize, rndfsize; 1733 extern struct proc *fpcurproc; 1734 1735 frame = p->p_md.md_tf; 1736 1737 /* Do we need to jump onto the signal stack? */ 1738 onstack = 1739 (psp->ps_sigstk.ss_flags & (SS_DISABLE | SS_ONSTACK)) == 0 && 1740 (psp->ps_sigact[sig].sa_flags & SA_ONSTACK) != 0; 1741 1742 /* Allocate space for the signal handler context. */ 1743 fsize = sizeof(ksc); 1744 rndfsize = ((fsize + 15) / 16) * 16; 1745 1746 if (onstack) 1747 scp = (struct sigcontext *)((caddr_t)psp->ps_sigstk.ss_sp + 1748 psp->ps_sigstk.ss_size); 1749 else 1750 scp = (struct sigcontext *)(alpha_pal_rdusp()); 1751 scp = (struct sigcontext *)((caddr_t)scp - rndfsize); 1752 1753 #ifdef DEBUG 1754 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1755 printf("sendsig(%d): sig %d ssp %p usp %p\n", p->p_pid, 1756 sig, &onstack, scp); 1757 #endif 1758 1759 /* Build stack frame for signal trampoline. */ 1760 ksc.sc_pc = frame->tf_regs[FRAME_PC]; 1761 ksc.sc_ps = frame->tf_regs[FRAME_PS]; 1762 1763 /* Save register context. */ 1764 frametoreg(frame, (struct reg *)ksc.sc_regs); 1765 ksc.sc_regs[R_ZERO] = 0xACEDBADE; /* magic number */ 1766 ksc.sc_regs[R_SP] = alpha_pal_rdusp(); 1767 1768 /* save the floating-point state, if necessary, then copy it. */ 1769 if (p == fpcurproc) { 1770 alpha_pal_wrfen(1); 1771 savefpstate(&p->p_addr->u_pcb.pcb_fp); 1772 alpha_pal_wrfen(0); 1773 fpcurproc = NULL; 1774 } 1775 ksc.sc_ownedfp = p->p_md.md_flags & MDP_FPUSED; 1776 bcopy(&p->p_addr->u_pcb.pcb_fp, (struct fpreg *)ksc.sc_fpregs, 1777 sizeof(struct fpreg)); 1778 ksc.sc_fp_control = 0; /* XXX ? */ 1779 bzero(ksc.sc_reserved, sizeof ksc.sc_reserved); /* XXX */ 1780 bzero(ksc.sc_xxx, sizeof ksc.sc_xxx); /* XXX */ 1781 1782 /* Save signal stack. */ 1783 ksc.sc_onstack = psp->ps_sigstk.ss_flags & SS_ONSTACK; 1784 1785 /* Save signal mask. */ 1786 ksc.sc_mask = *mask; 1787 1788 #ifdef COMPAT_13 1789 /* 1790 * XXX We always have to save an old style signal mask because 1791 * XXX we might be delivering a signal to a process which will 1792 * XXX escape from the signal in a non-standard way and invoke 1793 * XXX sigreturn() directly. 1794 */ 1795 { 1796 /* Note: it's a long in the stack frame. */ 1797 sigset13_t mask13; 1798 1799 native_sigset_to_sigset13(mask, &mask13); 1800 ksc.__sc_mask13 = mask13; 1801 } 1802 #endif 1803 1804 #ifdef COMPAT_OSF1 1805 /* 1806 * XXX Create an OSF/1-style sigcontext and associated goo. 1807 */ 1808 #endif 1809 1810 if (copyout(&ksc, (caddr_t)scp, fsize) != 0) { 1811 /* 1812 * Process has trashed its stack; give it an illegal 1813 * instruction to halt it in its tracks. 1814 */ 1815 #ifdef DEBUG 1816 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1817 printf("sendsig(%d): copyout failed on sig %d\n", 1818 p->p_pid, sig); 1819 #endif 1820 sigexit(p, SIGILL); 1821 /* NOTREACHED */ 1822 } 1823 #ifdef DEBUG 1824 if (sigdebug & SDB_FOLLOW) 1825 printf("sendsig(%d): sig %d scp %p code %lx\n", p->p_pid, sig, 1826 scp, code); 1827 #endif 1828 1829 /* Set up the registers to return to sigcode. */ 1830 frame->tf_regs[FRAME_PC] = (u_int64_t)psp->ps_sigcode; 1831 frame->tf_regs[FRAME_A0] = sig; 1832 frame->tf_regs[FRAME_A1] = code; 1833 frame->tf_regs[FRAME_A2] = (u_int64_t)scp; 1834 frame->tf_regs[FRAME_T12] = (u_int64_t)catcher; /* t12 is pv */ 1835 alpha_pal_wrusp((unsigned long)scp); 1836 1837 /* Remember that we're now on the signal stack. */ 1838 if (onstack) 1839 psp->ps_sigstk.ss_flags |= SS_ONSTACK; 1840 1841 #ifdef DEBUG 1842 if (sigdebug & SDB_FOLLOW) 1843 printf("sendsig(%d): pc %lx, catcher %lx\n", p->p_pid, 1844 frame->tf_regs[FRAME_PC], frame->tf_regs[FRAME_A3]); 1845 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1846 printf("sendsig(%d): sig %d returns\n", 1847 p->p_pid, sig); 1848 #endif 1849 } 1850 1851 /* 1852 * System call to cleanup state after a signal 1853 * has been taken. Reset signal mask and 1854 * stack state from context left by sendsig (above). 1855 * Return to previous pc and psl as specified by 1856 * context left by sendsig. Check carefully to 1857 * make sure that the user has not modified the 1858 * psl to gain improper priviledges or to cause 1859 * a machine fault. 1860 */ 1861 /* ARGSUSED */ 1862 int 1863 sys___sigreturn14(p, v, retval) 1864 struct proc *p; 1865 void *v; 1866 register_t *retval; 1867 { 1868 struct sys___sigreturn14_args /* { 1869 syscallarg(struct sigcontext *) sigcntxp; 1870 } */ *uap = v; 1871 struct sigcontext *scp, ksc; 1872 extern struct proc *fpcurproc; 1873 1874 /* 1875 * The trampoline code hands us the context. 1876 * It is unsafe to keep track of it ourselves, in the event that a 1877 * program jumps out of a signal handler. 1878 */ 1879 scp = SCARG(uap, sigcntxp); 1880 #ifdef DEBUG 1881 if (sigdebug & SDB_FOLLOW) 1882 printf("sigreturn: pid %d, scp %p\n", p->p_pid, scp); 1883 #endif 1884 if (ALIGN(scp) != (u_int64_t)scp) 1885 return (EINVAL); 1886 1887 if (copyin((caddr_t)scp, &ksc, sizeof(ksc)) != 0) 1888 return (EFAULT); 1889 1890 if (ksc.sc_regs[R_ZERO] != 0xACEDBADE) /* magic number */ 1891 return (EINVAL); 1892 1893 /* Restore register context. */ 1894 p->p_md.md_tf->tf_regs[FRAME_PC] = ksc.sc_pc; 1895 p->p_md.md_tf->tf_regs[FRAME_PS] = 1896 (ksc.sc_ps | ALPHA_PSL_USERSET) & ~ALPHA_PSL_USERCLR; 1897 1898 regtoframe((struct reg *)ksc.sc_regs, p->p_md.md_tf); 1899 alpha_pal_wrusp(ksc.sc_regs[R_SP]); 1900 1901 /* XXX ksc.sc_ownedfp ? */ 1902 if (p == fpcurproc) 1903 fpcurproc = NULL; 1904 bcopy((struct fpreg *)ksc.sc_fpregs, &p->p_addr->u_pcb.pcb_fp, 1905 sizeof(struct fpreg)); 1906 /* XXX ksc.sc_fp_control ? */ 1907 1908 /* Restore signal stack. */ 1909 if (ksc.sc_onstack & SS_ONSTACK) 1910 p->p_sigacts->ps_sigstk.ss_flags |= SS_ONSTACK; 1911 else 1912 p->p_sigacts->ps_sigstk.ss_flags &= ~SS_ONSTACK; 1913 1914 /* Restore signal mask. */ 1915 (void) sigprocmask1(p, SIG_SETMASK, &ksc.sc_mask, 0); 1916 1917 #ifdef DEBUG 1918 if (sigdebug & SDB_FOLLOW) 1919 printf("sigreturn(%d): returns\n", p->p_pid); 1920 #endif 1921 return (EJUSTRETURN); 1922 } 1923 1924 /* 1925 * machine dependent system variables. 1926 */ 1927 int 1928 cpu_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 1929 int *name; 1930 u_int namelen; 1931 void *oldp; 1932 size_t *oldlenp; 1933 void *newp; 1934 size_t newlen; 1935 struct proc *p; 1936 { 1937 dev_t consdev; 1938 1939 /* all sysctl names at this level are terminal */ 1940 if (namelen != 1) 1941 return (ENOTDIR); /* overloaded */ 1942 1943 switch (name[0]) { 1944 case CPU_CONSDEV: 1945 if (cn_tab != NULL) 1946 consdev = cn_tab->cn_dev; 1947 else 1948 consdev = NODEV; 1949 return (sysctl_rdstruct(oldp, oldlenp, newp, &consdev, 1950 sizeof consdev)); 1951 1952 case CPU_ROOT_DEVICE: 1953 return (sysctl_rdstring(oldp, oldlenp, newp, 1954 root_device->dv_xname)); 1955 1956 case CPU_UNALIGNED_PRINT: 1957 return (sysctl_int(oldp, oldlenp, newp, newlen, 1958 &alpha_unaligned_print)); 1959 1960 case CPU_UNALIGNED_FIX: 1961 return (sysctl_int(oldp, oldlenp, newp, newlen, 1962 &alpha_unaligned_fix)); 1963 1964 case CPU_UNALIGNED_SIGBUS: 1965 return (sysctl_int(oldp, oldlenp, newp, newlen, 1966 &alpha_unaligned_sigbus)); 1967 1968 case CPU_BOOTED_KERNEL: 1969 return (sysctl_rdstring(oldp, oldlenp, newp, 1970 bootinfo.booted_kernel)); 1971 1972 default: 1973 return (EOPNOTSUPP); 1974 } 1975 /* NOTREACHED */ 1976 } 1977 1978 /* 1979 * Set registers on exec. 1980 */ 1981 void 1982 setregs(p, pack, stack) 1983 register struct proc *p; 1984 struct exec_package *pack; 1985 u_long stack; 1986 { 1987 struct trapframe *tfp = p->p_md.md_tf; 1988 extern struct proc *fpcurproc; 1989 #ifdef DEBUG 1990 int i; 1991 #endif 1992 1993 #ifdef DEBUG 1994 /* 1995 * Crash and dump, if the user requested it. 1996 */ 1997 if (boothowto & RB_DUMP) 1998 panic("crash requested by boot flags"); 1999 #endif 2000 2001 #ifdef DEBUG 2002 for (i = 0; i < FRAME_SIZE; i++) 2003 tfp->tf_regs[i] = 0xbabefacedeadbeef; 2004 #else 2005 bzero(tfp->tf_regs, FRAME_SIZE * sizeof tfp->tf_regs[0]); 2006 #endif 2007 bzero(&p->p_addr->u_pcb.pcb_fp, sizeof p->p_addr->u_pcb.pcb_fp); 2008 #define FP_RN 2 /* XXX */ 2009 p->p_addr->u_pcb.pcb_fp.fpr_cr = (long)FP_RN << 58; 2010 alpha_pal_wrusp(stack); 2011 tfp->tf_regs[FRAME_PS] = ALPHA_PSL_USERSET; 2012 tfp->tf_regs[FRAME_PC] = pack->ep_entry & ~3; 2013 2014 tfp->tf_regs[FRAME_A0] = stack; /* a0 = sp */ 2015 tfp->tf_regs[FRAME_A1] = 0; /* a1 = rtld cleanup */ 2016 tfp->tf_regs[FRAME_A2] = 0; /* a2 = rtld object */ 2017 tfp->tf_regs[FRAME_A3] = (u_int64_t)PS_STRINGS; /* a3 = ps_strings */ 2018 tfp->tf_regs[FRAME_T12] = tfp->tf_regs[FRAME_PC]; /* a.k.a. PV */ 2019 2020 p->p_md.md_flags &= ~MDP_FPUSED; 2021 if (fpcurproc == p) 2022 fpcurproc = NULL; 2023 } 2024 2025 void 2026 netintr() 2027 { 2028 int n, s; 2029 2030 s = splhigh(); 2031 n = netisr; 2032 netisr = 0; 2033 splx(s); 2034 2035 #define DONETISR(bit, fn) \ 2036 do { \ 2037 if (n & (1 << (bit))) \ 2038 fn; \ 2039 } while (0) 2040 2041 #ifdef INET 2042 #if NARP > 0 2043 DONETISR(NETISR_ARP, arpintr()); 2044 #endif 2045 DONETISR(NETISR_IP, ipintr()); 2046 #endif 2047 #ifdef NETATALK 2048 DONETISR(NETISR_ATALK, atintr()); 2049 #endif 2050 #ifdef NS 2051 DONETISR(NETISR_NS, nsintr()); 2052 #endif 2053 #ifdef ISO 2054 DONETISR(NETISR_ISO, clnlintr()); 2055 #endif 2056 #ifdef CCITT 2057 DONETISR(NETISR_CCITT, ccittintr()); 2058 #endif 2059 #ifdef NATM 2060 DONETISR(NETISR_NATM, natmintr()); 2061 #endif 2062 #if NPPP > 1 2063 DONETISR(NETISR_PPP, pppintr()); 2064 #endif 2065 2066 #undef DONETISR 2067 } 2068 2069 void 2070 do_sir() 2071 { 2072 u_int64_t n; 2073 2074 do { 2075 (void)splhigh(); 2076 n = ssir; 2077 ssir = 0; 2078 splsoft(); /* don't recurse through spl0() */ 2079 2080 #if defined(UVM) 2081 #define COUNT_SOFT uvmexp.softs++ 2082 #else 2083 #define COUNT_SOFT cnt.v_soft++ 2084 #endif 2085 2086 #define DO_SIR(bit, fn) \ 2087 do { \ 2088 if (n & (bit)) { \ 2089 COUNT_SOFT; \ 2090 fn; \ 2091 } \ 2092 } while (0) 2093 2094 DO_SIR(SIR_NET, netintr()); 2095 DO_SIR(SIR_CLOCK, softclock()); 2096 #if NCOM > 0 2097 DO_SIR(SIR_SERIAL, comsoft()); 2098 #endif 2099 2100 #undef COUNT_SOFT 2101 #undef DO_SIR 2102 } while (ssir != 0); 2103 } 2104 2105 int 2106 spl0() 2107 { 2108 2109 if (ssir) 2110 do_sir(); /* it lowers the IPL itself */ 2111 2112 return (alpha_pal_swpipl(ALPHA_PSL_IPL_0)); 2113 } 2114 2115 /* 2116 * The following primitives manipulate the run queues. _whichqs tells which 2117 * of the 32 queues _qs have processes in them. Setrunqueue puts processes 2118 * into queues, Remrunqueue removes them from queues. The running process is 2119 * on no queue, other processes are on a queue related to p->p_priority, 2120 * divided by 4 actually to shrink the 0-127 range of priorities into the 32 2121 * available queues. 2122 */ 2123 /* 2124 * setrunqueue(p) 2125 * proc *p; 2126 * 2127 * Call should be made at splclock(), and p->p_stat should be SRUN. 2128 */ 2129 2130 void 2131 setrunqueue(p) 2132 struct proc *p; 2133 { 2134 int bit; 2135 2136 /* firewall: p->p_back must be NULL */ 2137 if (p->p_back != NULL) 2138 panic("setrunqueue"); 2139 2140 bit = p->p_priority >> 2; 2141 whichqs |= (1 << bit); 2142 p->p_forw = (struct proc *)&qs[bit]; 2143 p->p_back = qs[bit].ph_rlink; 2144 p->p_back->p_forw = p; 2145 qs[bit].ph_rlink = p; 2146 } 2147 2148 /* 2149 * remrunqueue(p) 2150 * 2151 * Call should be made at splclock(). 2152 */ 2153 void 2154 remrunqueue(p) 2155 struct proc *p; 2156 { 2157 int bit; 2158 2159 bit = p->p_priority >> 2; 2160 if ((whichqs & (1 << bit)) == 0) 2161 panic("remrunqueue"); 2162 2163 p->p_back->p_forw = p->p_forw; 2164 p->p_forw->p_back = p->p_back; 2165 p->p_back = NULL; /* for firewall checking. */ 2166 2167 if ((struct proc *)&qs[bit] == qs[bit].ph_link) 2168 whichqs &= ~(1 << bit); 2169 } 2170 2171 /* 2172 * Return the best possible estimate of the time in the timeval 2173 * to which tvp points. Unfortunately, we can't read the hardware registers. 2174 * We guarantee that the time will be greater than the value obtained by a 2175 * previous call. 2176 */ 2177 void 2178 microtime(tvp) 2179 register struct timeval *tvp; 2180 { 2181 int s = splclock(); 2182 static struct timeval lasttime; 2183 2184 *tvp = time; 2185 #ifdef notdef 2186 tvp->tv_usec += clkread(); 2187 while (tvp->tv_usec > 1000000) { 2188 tvp->tv_sec++; 2189 tvp->tv_usec -= 1000000; 2190 } 2191 #endif 2192 if (tvp->tv_sec == lasttime.tv_sec && 2193 tvp->tv_usec <= lasttime.tv_usec && 2194 (tvp->tv_usec = lasttime.tv_usec + 1) > 1000000) { 2195 tvp->tv_sec++; 2196 tvp->tv_usec -= 1000000; 2197 } 2198 lasttime = *tvp; 2199 splx(s); 2200 } 2201 2202 /* 2203 * Wait "n" microseconds. 2204 */ 2205 void 2206 delay(n) 2207 unsigned long n; 2208 { 2209 long N = cycles_per_usec * (n); 2210 2211 while (N > 0) /* XXX */ 2212 N -= 3; /* XXX */ 2213 } 2214 2215 #if defined(COMPAT_OSF1) || 1 /* XXX */ 2216 void cpu_exec_ecoff_setregs __P((struct proc *, struct exec_package *, 2217 u_long)); 2218 2219 void 2220 cpu_exec_ecoff_setregs(p, epp, stack) 2221 struct proc *p; 2222 struct exec_package *epp; 2223 u_long stack; 2224 { 2225 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2226 2227 setregs(p, epp, stack); 2228 p->p_md.md_tf->tf_regs[FRAME_GP] = execp->a.gp_value; 2229 } 2230 2231 /* 2232 * cpu_exec_ecoff_hook(): 2233 * cpu-dependent ECOFF format hook for execve(). 2234 * 2235 * Do any machine-dependent diddling of the exec package when doing ECOFF. 2236 * 2237 */ 2238 int 2239 cpu_exec_ecoff_hook(p, epp) 2240 struct proc *p; 2241 struct exec_package *epp; 2242 { 2243 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2244 extern struct emul emul_netbsd; 2245 #ifdef COMPAT_OSF1 2246 extern struct emul emul_osf1; 2247 #endif 2248 2249 switch (execp->f.f_magic) { 2250 #ifdef COMPAT_OSF1 2251 case ECOFF_MAGIC_ALPHA: 2252 epp->ep_emul = &emul_osf1; 2253 break; 2254 #endif 2255 2256 case ECOFF_MAGIC_NETBSD_ALPHA: 2257 epp->ep_emul = &emul_netbsd; 2258 break; 2259 2260 default: 2261 return ENOEXEC; 2262 } 2263 return 0; 2264 } 2265 #endif 2266 2267 int 2268 alpha_pa_access(pa) 2269 u_long pa; 2270 { 2271 int i; 2272 2273 for (i = 0; i < mem_cluster_cnt; i++) { 2274 if (pa < mem_clusters[i].start) 2275 continue; 2276 if ((pa - mem_clusters[i].start) >= 2277 (mem_clusters[i].size & ~PAGE_MASK)) 2278 continue; 2279 return (mem_clusters[i].size & PAGE_MASK); /* prot */ 2280 } 2281 return (PROT_NONE); 2282 } 2283 2284 /* XXX XXX BEGIN XXX XXX */ 2285 paddr_t alpha_XXX_dmamap_or; /* XXX */ 2286 /* XXX */ 2287 paddr_t /* XXX */ 2288 alpha_XXX_dmamap(v) /* XXX */ 2289 vaddr_t v; /* XXX */ 2290 { /* XXX */ 2291 /* XXX */ 2292 return (vtophys(v) | alpha_XXX_dmamap_or); /* XXX */ 2293 } /* XXX */ 2294 /* XXX XXX END XXX XXX */ 2295 2296 struct mchkinfo * 2297 cpu_mchkinfo() 2298 { 2299 if (mchkinfo_all_cpus == NULL) 2300 return &startup_info; 2301 return mchkinfo_all_cpus + alpha_pal_whami(); 2302 } 2303
Indexes created Fri Oct 03 02:09:57 GMT 2025