machdep.c revision 1.154
1 /* $NetBSD: machdep.c,v 1.154 1998/11/02 04:43:23 ross 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 1.154 1998/11/02 04:43:23 ross 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 "com.h" 190 #if NCOM > 0 191 extern void comsoft __P((void)); 192 #endif 193 194 #if defined(UVM) 195 vm_map_t exec_map = NULL; 196 vm_map_t mb_map = NULL; 197 vm_map_t phys_map = NULL; 198 #else 199 vm_map_t buffer_map; 200 #endif 201 202 /* 203 * Declare these as initialized data so we can patch them. 204 */ 205 int nswbuf = 0; 206 #ifdef NBUF 207 int nbuf = NBUF; 208 #else 209 int nbuf = 0; 210 #endif 211 212 #ifndef BUFPAGES 213 #define BUFPAGES 0 214 #endif 215 #ifndef BUFCACHE 216 #define BUFCACHE 10 217 #endif 218 219 int bufpages = BUFPAGES; /* optional hardwired count */ 220 int bufcache = BUFCACHE; /* % of RAM to use for buffer cache */ 221 222 caddr_t msgbufaddr; 223 224 int maxmem; /* max memory per process */ 225 226 int totalphysmem; /* total amount of physical memory in system */ 227 int physmem; /* physical memory used by NetBSD + some rsvd */ 228 int resvmem; /* amount of memory reserved for PROM */ 229 int unusedmem; /* amount of memory for OS that we don't use */ 230 int unknownmem; /* amount of memory with an unknown use */ 231 232 int cputype; /* system type, from the RPB */ 233 234 /* 235 * XXX We need an address to which we can assign things so that they 236 * won't be optimized away because we didn't use the value. 237 */ 238 u_int32_t no_optimize; 239 240 /* the following is used externally (sysctl_hw) */ 241 char machine[] = MACHINE; /* from <machine/param.h> */ 242 char machine_arch[] = MACHINE_ARCH; /* from <machine/param.h> */ 243 char cpu_model[128]; 244 245 struct user *proc0paddr; 246 247 /* Number of machine cycles per microsecond */ 248 u_int64_t cycles_per_usec; 249 250 /* number of cpus in the box. really! */ 251 int ncpus; 252 253 /* machine check info array, valloc()'ed in allocsys() */ 254 255 static struct mchkinfo startup_info, 256 *mchkinfo_all_cpus; 257 258 struct bootinfo_kernel bootinfo; 259 260 /* For built-in TCDS */ 261 #if defined(DEC_3000_300) || defined(DEC_3000_500) 262 u_int8_t dec_3000_scsiid[2], dec_3000_scsifast[2]; 263 #endif 264 265 struct platform platform; 266 267 u_int32_t vm_mbuf_size = _VM_MBUF_SIZE; 268 u_int32_t vm_kmem_size = _VM_KMEM_SIZE; 269 u_int32_t vm_phys_size = _VM_PHYS_SIZE; 270 271 #ifdef DDB 272 /* start and end of kernel symbol table */ 273 void *ksym_start, *ksym_end; 274 #endif 275 276 /* for cpu_sysctl() */ 277 int alpha_unaligned_print = 1; /* warn about unaligned accesses */ 278 int alpha_unaligned_fix = 1; /* fix up unaligned accesses */ 279 int alpha_unaligned_sigbus = 0; /* don't SIGBUS on fixed-up accesses */ 280 281 /* 282 * XXX This should be dynamically sized, but we have the chicken-egg problem! 283 * XXX it should also be larger than it is, because not all of the mddt 284 * XXX clusters end up being used for VM. 285 */ 286 phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX]; /* low size bits overloaded */ 287 int mem_cluster_cnt; 288 289 caddr_t allocsys __P((caddr_t)); 290 int cpu_dump __P((void)); 291 int cpu_dumpsize __P((void)); 292 u_long cpu_dump_mempagecnt __P((void)); 293 void dumpsys __P((void)); 294 void identifycpu __P((void)); 295 void netintr __P((void)); 296 void printregs __P((struct reg *)); 297 298 void 299 alpha_init(pfn, ptb, bim, bip, biv) 300 u_long pfn; /* first free PFN number */ 301 u_long ptb; /* PFN of current level 1 page table */ 302 u_long bim; /* bootinfo magic */ 303 u_long bip; /* bootinfo pointer */ 304 u_long biv; /* bootinfo version */ 305 { 306 extern char kernel_text[], _end[]; 307 struct mddt *mddtp; 308 struct mddt_cluster *memc; 309 int i, mddtweird; 310 struct vm_physseg *vps; 311 vaddr_t kernstart, kernend; 312 paddr_t kernstartpfn, kernendpfn, pfn0, pfn1; 313 vsize_t size; 314 char *p; 315 caddr_t v; 316 char *bootinfo_msg; 317 318 /* NO OUTPUT ALLOWED UNTIL FURTHER NOTICE */ 319 320 /* 321 * Turn off interrupts (not mchecks) and floating point. 322 * Make sure the instruction and data streams are consistent. 323 */ 324 (void)alpha_pal_swpipl(ALPHA_PSL_IPL_HIGH); 325 alpha_pal_wrfen(0); 326 ALPHA_TBIA(); 327 alpha_pal_imb(); 328 329 /* 330 * Get critical system information (if possible, from the 331 * information provided by the boot program). 332 */ 333 bootinfo_msg = NULL; 334 if (bim == BOOTINFO_MAGIC) { 335 if (biv == 0) { /* backward compat */ 336 biv = *(u_long *)bip; 337 bip += 8; 338 } 339 switch (biv) { 340 case 1: { 341 struct bootinfo_v1 *v1p = (struct bootinfo_v1 *)bip; 342 343 bootinfo.ssym = v1p->ssym; 344 bootinfo.esym = v1p->esym; 345 /* hwrpb may not be provided by boot block in v1 */ 346 if (v1p->hwrpb != NULL) { 347 bootinfo.hwrpb_phys = 348 ((struct rpb *)v1p->hwrpb)->rpb_phys; 349 bootinfo.hwrpb_size = v1p->hwrpbsize; 350 } else { 351 bootinfo.hwrpb_phys = 352 ((struct rpb *)HWRPB_ADDR)->rpb_phys; 353 bootinfo.hwrpb_size = 354 ((struct rpb *)HWRPB_ADDR)->rpb_size; 355 } 356 bcopy(v1p->boot_flags, bootinfo.boot_flags, 357 min(sizeof v1p->boot_flags, 358 sizeof bootinfo.boot_flags)); 359 bcopy(v1p->booted_kernel, bootinfo.booted_kernel, 360 min(sizeof v1p->booted_kernel, 361 sizeof bootinfo.booted_kernel)); 362 /* booted dev not provided in bootinfo */ 363 init_prom_interface((struct rpb *) 364 ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys)); 365 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 366 sizeof bootinfo.booted_dev); 367 break; 368 } 369 default: 370 bootinfo_msg = "unknown bootinfo version"; 371 goto nobootinfo; 372 } 373 } else { 374 bootinfo_msg = "boot program did not pass bootinfo"; 375 nobootinfo: 376 bootinfo.ssym = (u_long)_end; 377 bootinfo.esym = (u_long)_end; 378 bootinfo.hwrpb_phys = ((struct rpb *)HWRPB_ADDR)->rpb_phys; 379 bootinfo.hwrpb_size = ((struct rpb *)HWRPB_ADDR)->rpb_size; 380 init_prom_interface((struct rpb *)HWRPB_ADDR); 381 prom_getenv(PROM_E_BOOTED_OSFLAGS, bootinfo.boot_flags, 382 sizeof bootinfo.boot_flags); 383 prom_getenv(PROM_E_BOOTED_FILE, bootinfo.booted_kernel, 384 sizeof bootinfo.booted_kernel); 385 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 386 sizeof bootinfo.booted_dev); 387 } 388 389 /* 390 * Initialize the kernel's mapping of the RPB. It's needed for 391 * lots of things. 392 */ 393 hwrpb = (struct rpb *)ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys); 394 395 #if defined(DEC_3000_300) || defined(DEC_3000_500) 396 if (hwrpb->rpb_type == ST_DEC_3000_300 || 397 hwrpb->rpb_type == ST_DEC_3000_500) { 398 prom_getenv(PROM_E_SCSIID, dec_3000_scsiid, 399 sizeof(dec_3000_scsiid)); 400 prom_getenv(PROM_E_SCSIFAST, dec_3000_scsifast, 401 sizeof(dec_3000_scsifast)); 402 } 403 #endif 404 405 /* 406 * Remember how many cycles there are per microsecond, 407 * so that we can use delay(). Round up, for safety. 408 */ 409 cycles_per_usec = (hwrpb->rpb_cc_freq + 999999) / 1000000; 410 411 /* 412 * Initalize the (temporary) bootstrap console interface, so 413 * we can use printf until the VM system starts being setup. 414 * The real console is initialized before then. 415 */ 416 init_bootstrap_console(); 417 418 /* OUTPUT NOW ALLOWED */ 419 420 /* delayed from above */ 421 if (bootinfo_msg) 422 printf("WARNING: %s (0x%lx, 0x%lx, 0x%lx)\n", 423 bootinfo_msg, bim, bip, biv); 424 425 /* Initialize the trap vectors on the primary processor. */ 426 trap_init(); 427 428 /* 429 * Find out what hardware we're on, and do basic initialization. 430 */ 431 cputype = hwrpb->rpb_type; 432 if (cputype >= ncpuinit) { 433 platform_not_supported(); 434 /* NOTREACHED */ 435 } 436 (*cpuinit[cputype].init)(); 437 strcpy(cpu_model, platform.model); 438 439 /* 440 * Initalize the real console, so the the bootstrap console is 441 * no longer necessary. 442 */ 443 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 444 if (!pmap_uses_prom_console()) 445 #endif 446 (*platform.cons_init)(); 447 448 #ifdef DIAGNOSTIC 449 /* Paranoid sanity checking */ 450 451 /* We should always be running on the the primary. */ 452 assert(hwrpb->rpb_primary_cpu_id == alpha_pal_whami()); 453 454 /* 455 * On single-CPU systypes, the primary should always be CPU 0, 456 * except on Alpha 8200 systems where the CPU id is related 457 * to the VID, which is related to the Turbo Laser node id. 458 */ 459 if (cputype != ST_DEC_21000) 460 assert(hwrpb->rpb_primary_cpu_id == 0); 461 #endif 462 463 /* NO MORE FIRMWARE ACCESS ALLOWED */ 464 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 465 /* 466 * XXX (unless _PMAP_MAY_USE_PROM_CONSOLE is defined and 467 * XXX pmap_uses_prom_console() evaluates to non-zero.) 468 */ 469 #endif 470 471 /* 472 * find out this system's page size 473 */ 474 PAGE_SIZE = hwrpb->rpb_page_size; 475 if (PAGE_SIZE != 8192) 476 panic("page size %d != 8192?!", PAGE_SIZE); 477 478 /* 479 * Initialize PAGE_SIZE-dependent variables. 480 */ 481 #if defined(UVM) 482 uvm_setpagesize(); 483 #else 484 vm_set_page_size(); 485 #endif 486 487 /* 488 * Find the beginning and end of the kernel (and leave a 489 * bit of space before the beginning for the bootstrap 490 * stack). 491 */ 492 kernstart = trunc_page(kernel_text) - 2 * PAGE_SIZE; 493 #ifdef DDB 494 ksym_start = (void *)bootinfo.ssym; 495 ksym_end = (void *)bootinfo.esym; 496 kernend = (vaddr_t)round_page(ksym_end); 497 #else 498 kernend = (vaddr_t)round_page(_end); 499 #endif 500 501 kernstartpfn = atop(ALPHA_K0SEG_TO_PHYS(kernstart)); 502 kernendpfn = atop(ALPHA_K0SEG_TO_PHYS(kernend)); 503 504 /* 505 * Find out how much memory is available, by looking at 506 * the memory cluster descriptors. This also tries to do 507 * its best to detect things things that have never been seen 508 * before... 509 */ 510 mddtp = (struct mddt *)(((caddr_t)hwrpb) + hwrpb->rpb_memdat_off); 511 512 /* MDDT SANITY CHECKING */ 513 mddtweird = 0; 514 if (mddtp->mddt_cluster_cnt < 2) { 515 mddtweird = 1; 516 printf("WARNING: weird number of mem clusters: %d\n", 517 mddtp->mddt_cluster_cnt); 518 } 519 520 #if 0 521 printf("Memory cluster count: %d\n", mddtp->mddt_cluster_cnt); 522 #endif 523 524 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 525 memc = &mddtp->mddt_clusters[i]; 526 #if 0 527 printf("MEMC %d: pfn 0x%lx cnt 0x%lx usage 0x%lx\n", i, 528 memc->mddt_pfn, memc->mddt_pg_cnt, memc->mddt_usage); 529 #endif 530 totalphysmem += memc->mddt_pg_cnt; 531 if (mem_cluster_cnt < VM_PHYSSEG_MAX) { /* XXX */ 532 mem_clusters[mem_cluster_cnt].start = 533 ptoa(memc->mddt_pfn); 534 mem_clusters[mem_cluster_cnt].size = 535 ptoa(memc->mddt_pg_cnt); 536 if (memc->mddt_usage & MDDT_mbz || 537 memc->mddt_usage & MDDT_NONVOLATILE || /* XXX */ 538 memc->mddt_usage & MDDT_PALCODE) 539 mem_clusters[mem_cluster_cnt].size |= 540 PROT_READ; 541 else 542 mem_clusters[mem_cluster_cnt].size |= 543 PROT_READ | PROT_WRITE | PROT_EXEC; 544 mem_cluster_cnt++; 545 } 546 547 if (memc->mddt_usage & MDDT_mbz) { 548 mddtweird = 1; 549 printf("WARNING: mem cluster %d has weird " 550 "usage 0x%lx\n", i, memc->mddt_usage); 551 unknownmem += memc->mddt_pg_cnt; 552 continue; 553 } 554 if (memc->mddt_usage & MDDT_NONVOLATILE) { 555 /* XXX should handle these... */ 556 printf("WARNING: skipping non-volatile mem " 557 "cluster %d\n", i); 558 unusedmem += memc->mddt_pg_cnt; 559 continue; 560 } 561 if (memc->mddt_usage & MDDT_PALCODE) { 562 resvmem += memc->mddt_pg_cnt; 563 continue; 564 } 565 566 /* 567 * We have a memory cluster available for system 568 * software use. We must determine if this cluster 569 * holds the kernel. 570 */ 571 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 572 /* 573 * XXX If the kernel uses the PROM console, we only use the 574 * XXX memory after the kernel in the first system segment, 575 * XXX to avoid clobbering prom mapping, data, etc. 576 */ 577 if (!pmap_uses_prom_console() || physmem == 0) { 578 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 579 physmem += memc->mddt_pg_cnt; 580 pfn0 = memc->mddt_pfn; 581 pfn1 = memc->mddt_pfn + memc->mddt_pg_cnt; 582 if (pfn0 <= kernstartpfn && kernendpfn <= pfn1) { 583 /* 584 * Must compute the location of the kernel 585 * within the segment. 586 */ 587 #if 0 588 printf("Cluster %d contains kernel\n", i); 589 #endif 590 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 591 if (!pmap_uses_prom_console()) { 592 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 593 if (pfn0 < kernstartpfn) { 594 /* 595 * There is a chunk before the kernel. 596 */ 597 #if 0 598 printf("Loading chunk before kernel: " 599 "0x%lx / 0x%lx\n", pfn0, kernstartpfn); 600 #endif 601 #if defined(UVM) 602 uvm_page_physload(pfn0, kernstartpfn, 603 pfn0, kernstartpfn, VM_FREELIST_DEFAULT); 604 #else 605 vm_page_physload(pfn0, kernstartpfn, 606 pfn0, kernstartpfn); 607 #endif 608 } 609 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 610 } 611 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 612 if (kernendpfn < pfn1) { 613 /* 614 * There is a chunk after the kernel. 615 */ 616 #if 0 617 printf("Loading chunk after kernel: " 618 "0x%lx / 0x%lx\n", kernendpfn, pfn1); 619 #endif 620 #if defined(UVM) 621 uvm_page_physload(kernendpfn, pfn1, 622 kernendpfn, pfn1, VM_FREELIST_DEFAULT); 623 #else 624 vm_page_physload(kernendpfn, pfn1, 625 kernendpfn, pfn1); 626 #endif 627 } 628 } else { 629 /* 630 * Just load this cluster as one chunk. 631 */ 632 #if 0 633 printf("Loading cluster %d: 0x%lx / 0x%lx\n", i, 634 pfn0, pfn1); 635 #endif 636 #if defined(UVM) 637 uvm_page_physload(pfn0, pfn1, pfn0, pfn1, 638 VM_FREELIST_DEFAULT); 639 #else 640 vm_page_physload(pfn0, pfn1, pfn0, pfn1); 641 #endif 642 } 643 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 644 } 645 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 646 } 647 648 /* 649 * Dump out the MDDT if it looks odd... 650 */ 651 if (mddtweird) { 652 printf("\n"); 653 printf("complete memory cluster information:\n"); 654 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 655 printf("mddt %d:\n", i); 656 printf("\tpfn %lx\n", 657 mddtp->mddt_clusters[i].mddt_pfn); 658 printf("\tcnt %lx\n", 659 mddtp->mddt_clusters[i].mddt_pg_cnt); 660 printf("\ttest %lx\n", 661 mddtp->mddt_clusters[i].mddt_pg_test); 662 printf("\tbva %lx\n", 663 mddtp->mddt_clusters[i].mddt_v_bitaddr); 664 printf("\tbpa %lx\n", 665 mddtp->mddt_clusters[i].mddt_p_bitaddr); 666 printf("\tbcksum %lx\n", 667 mddtp->mddt_clusters[i].mddt_bit_cksum); 668 printf("\tusage %lx\n", 669 mddtp->mddt_clusters[i].mddt_usage); 670 } 671 printf("\n"); 672 } 673 674 if (totalphysmem == 0) 675 panic("can't happen: system seems to have no memory!"); 676 677 #ifdef LIMITMEM 678 /* 679 * XXX Kludge so we can run on machines with memory larger 680 * XXX than 1G until all device drivers are converted to 681 * XXX use bus_dma. (Relies on the fact that vm_physmem 682 * XXX sorted in order of increasing addresses.) 683 */ 684 if (vm_physmem[vm_nphysseg - 1].end > atop(LIMITMEM * 1024 * 1024)) { 685 686 printf("******** LIMITING MEMORY TO %dMB **********\n", 687 LIMITMEM); 688 689 do { 690 u_long ovf; 691 692 vps = &vm_physmem[vm_nphysseg - 1]; 693 694 if (vps->start >= atop(LIMITMEM * 1024 * 1024)) { 695 /* 696 * If the start is too high, just drop 697 * the whole segment. 698 * 699 * XXX can start != avail_start in this 700 * XXX case? wouldn't that mean that 701 * XXX some memory was stolen above the 702 * XXX limit? What to do? 703 */ 704 ovf = vps->end - vps->start; 705 vm_nphysseg--; 706 } else { 707 /* 708 * If the start is OK, calculate how much 709 * to drop and drop it. 710 */ 711 ovf = vps->end - atop(LIMITMEM * 1024 * 1024); 712 vps->end -= ovf; 713 vps->avail_end -= ovf; 714 } 715 physmem -= ovf; 716 unusedmem += ovf; 717 } while (vps->end > atop(LIMITMEM * 1024 * 1024)); 718 } 719 #endif /* LIMITMEM */ 720 721 maxmem = physmem; 722 723 #if 0 724 printf("totalphysmem = %d\n", totalphysmem); 725 printf("physmem = %d\n", physmem); 726 printf("resvmem = %d\n", resvmem); 727 printf("unusedmem = %d\n", unusedmem); 728 printf("unknownmem = %d\n", unknownmem); 729 #endif 730 731 /* 732 * Adjust some parameters if the amount of physmem 733 * available would cause us to croak. This is completely 734 * eyeballed and isn't meant to be the final answer. 735 * vm_phys_size is probably the only one to really worry 736 * about. 737 * 738 * It's for booting a GENERIC kernel on a large memory platform. 739 */ 740 if (physmem >= atop(128 * 1024 * 1024)) { 741 vm_mbuf_size <<= 1; 742 vm_kmem_size <<= 3; 743 vm_phys_size <<= 2; 744 } 745 746 /* 747 * Initialize error message buffer (at end of core). 748 */ 749 { 750 size_t sz = round_page(MSGBUFSIZE); 751 752 vps = &vm_physmem[vm_nphysseg - 1]; 753 754 /* shrink so that it'll fit in the last segment */ 755 if ((vps->avail_end - vps->avail_start) < atop(sz)) 756 sz = ptoa(vps->avail_end - vps->avail_start); 757 758 vps->end -= atop(sz); 759 vps->avail_end -= atop(sz); 760 msgbufaddr = (caddr_t) ALPHA_PHYS_TO_K0SEG(ptoa(vps->end)); 761 initmsgbuf(msgbufaddr, sz); 762 763 /* Remove the last segment if it now has no pages. */ 764 if (vps->start == vps->end) 765 vm_nphysseg--; 766 767 /* warn if the message buffer had to be shrunk */ 768 if (sz != round_page(MSGBUFSIZE)) 769 printf("WARNING: %d bytes not available for msgbuf in last cluster (%d used)\n", 770 round_page(MSGBUFSIZE), sz); 771 772 } 773 774 /* 775 * Init mapping for u page(s) for proc 0 776 */ 777 proc0.p_addr = proc0paddr = 778 (struct user *)pmap_steal_memory(UPAGES * PAGE_SIZE, NULL, NULL); 779 780 /* 781 * Allocate space for system data structures. These data structures 782 * are allocated here instead of cpu_startup() because physical 783 * memory is directly addressable. We don't have to map these into 784 * virtual address space. 785 */ 786 size = (vsize_t)allocsys(0); 787 v = (caddr_t)pmap_steal_memory(size, NULL, NULL); 788 if ((allocsys(v) - v) != size) 789 panic("alpha_init: table size inconsistency"); 790 791 /* 792 * Initialize the virtual memory system, and set the 793 * page table base register in proc 0's PCB. 794 */ 795 pmap_bootstrap(ALPHA_PHYS_TO_K0SEG(ptb << PGSHIFT), 796 hwrpb->rpb_max_asn, hwrpb->rpb_pcs_cnt); 797 798 /* 799 * Initialize the rest of proc 0's PCB, and cache its physical 800 * address. 801 */ 802 proc0.p_md.md_pcbpaddr = 803 (struct pcb *)ALPHA_K0SEG_TO_PHYS((vaddr_t)&proc0paddr->u_pcb); 804 805 /* 806 * Set the kernel sp, reserving space for an (empty) trapframe, 807 * and make proc0's trapframe pointer point to it for sanity. 808 */ 809 proc0paddr->u_pcb.pcb_hw.apcb_ksp = 810 (u_int64_t)proc0paddr + USPACE - sizeof(struct trapframe); 811 proc0.p_md.md_tf = 812 (struct trapframe *)proc0paddr->u_pcb.pcb_hw.apcb_ksp; 813 814 /* 815 * Look at arguments passed to us and compute boothowto. 816 */ 817 818 boothowto = RB_SINGLE; 819 #ifdef KADB 820 boothowto |= RB_KDB; 821 #endif 822 for (p = bootinfo.boot_flags; p && *p != '\0'; p++) { 823 /* 824 * Note that we'd really like to differentiate case here, 825 * but the Alpha AXP Architecture Reference Manual 826 * says that we shouldn't. 827 */ 828 switch (*p) { 829 case 'a': /* autoboot */ 830 case 'A': 831 boothowto &= ~RB_SINGLE; 832 break; 833 834 #ifdef DEBUG 835 case 'c': /* crash dump immediately after autoconfig */ 836 case 'C': 837 boothowto |= RB_DUMP; 838 break; 839 #endif 840 841 #if defined(KGDB) || defined(DDB) 842 case 'd': /* break into the kernel debugger ASAP */ 843 case 'D': 844 boothowto |= RB_KDB; 845 break; 846 #endif 847 848 case 'h': /* always halt, never reboot */ 849 case 'H': 850 boothowto |= RB_HALT; 851 break; 852 853 #if 0 854 case 'm': /* mini root present in memory */ 855 case 'M': 856 boothowto |= RB_MINIROOT; 857 break; 858 #endif 859 860 case 'n': /* askname */ 861 case 'N': 862 boothowto |= RB_ASKNAME; 863 break; 864 865 case 's': /* single-user (default, supported for sanity) */ 866 case 'S': 867 boothowto |= RB_SINGLE; 868 break; 869 870 case '-': 871 /* 872 * Just ignore this. It's not required, but it's 873 * common for it to be passed regardless. 874 */ 875 break; 876 877 default: 878 printf("Unrecognized boot flag '%c'.\n", *p); 879 break; 880 } 881 } 882 883 884 /* 885 * Figure out the number of cpus in the box, from RPB fields. 886 * Really. We mean it. 887 */ 888 for (i = 0; i < hwrpb->rpb_pcs_cnt; i++) { 889 struct pcs *pcsp; 890 891 pcsp = LOCATE_PCS(hwrpb, i); 892 if ((pcsp->pcs_flags & PCS_PP) != 0) 893 ncpus++; 894 } 895 896 /* 897 * Initialize debuggers, and break into them if appropriate. 898 */ 899 #ifdef DDB 900 db_machine_init(); 901 ddb_init(ksym_start, ksym_end); 902 if (boothowto & RB_KDB) 903 Debugger(); 904 #endif 905 #ifdef KGDB 906 if (boothowto & RB_KDB) 907 kgdb_connect(0); 908 #endif 909 /* 910 * Figure out our clock frequency, from RPB fields. 911 */ 912 hz = hwrpb->rpb_intr_freq >> 12; 913 if (!(60 <= hz && hz <= 10240)) { 914 hz = 1024; 915 #ifdef DIAGNOSTIC 916 printf("WARNING: unbelievable rpb_intr_freq: %ld (%d hz)\n", 917 hwrpb->rpb_intr_freq, hz); 918 #endif 919 } 920 } 921 922 /* 923 * Allocate space for system data structures. We are given 924 * a starting virtual address and we return a final virtual 925 * address; along the way we set each data structure pointer. 926 * 927 * We call allocsys() with 0 to find out how much space we want, 928 * allocate that much and fill it with zeroes, and the call 929 * allocsys() again with the correct base virtual address. 930 */ 931 caddr_t 932 allocsys(v) 933 caddr_t v; 934 { 935 936 #define valloc(name, type, num) \ 937 (name) = (type *)v; v = (caddr_t)ALIGN((name)+(num)) 938 939 #ifdef REAL_CLISTS 940 valloc(cfree, struct cblock, nclist); 941 #endif 942 valloc(callout, struct callout, ncallout); 943 #ifdef SYSVSHM 944 valloc(shmsegs, struct shmid_ds, shminfo.shmmni); 945 #endif 946 #ifdef SYSVSEM 947 valloc(sema, struct semid_ds, seminfo.semmni); 948 valloc(sem, struct sem, seminfo.semmns); 949 /* This is pretty disgusting! */ 950 valloc(semu, int, (seminfo.semmnu * seminfo.semusz) / sizeof(int)); 951 #endif 952 #ifdef SYSVMSG 953 valloc(msgpool, char, msginfo.msgmax); 954 valloc(msgmaps, struct msgmap, msginfo.msgseg); 955 valloc(msghdrs, struct msg, msginfo.msgtql); 956 valloc(msqids, struct msqid_ds, msginfo.msgmni); 957 #endif 958 959 /* 960 * Determine how many buffers to allocate. 961 * We allocate bufcache % of memory for buffer space. Insure a 962 * minimum of 16 buffers. We allocate 1/2 as many swap buffer 963 * headers as file i/o buffers. 964 */ 965 if (bufpages == 0) 966 bufpages = physmem / CLSIZE * bufcache / 100; 967 if (nbuf == 0) { 968 nbuf = bufpages; 969 if (nbuf < 16) 970 nbuf = 16; 971 } 972 if (nswbuf == 0) { 973 nswbuf = (nbuf / 2) &~ 1; /* force even */ 974 if (nswbuf > 256) 975 nswbuf = 256; /* sanity */ 976 } 977 #if !defined(UVM) 978 valloc(swbuf, struct buf, nswbuf); 979 #endif 980 valloc(buf, struct buf, nbuf); 981 982 /* 983 * There appears to be a correlation between the number 984 * of processor slots defined in the HWRPB and the whami 985 * value that can be returned. 986 */ 987 valloc(mchkinfo_all_cpus, struct mchkinfo, hwrpb->rpb_pcs_cnt); 988 989 return (v); 990 #undef valloc 991 } 992 993 void 994 consinit() 995 { 996 997 /* 998 * Everything related to console initialization is done 999 * in alpha_init(). 1000 */ 1001 #if defined(DIAGNOSTIC) && defined(_PMAP_MAY_USE_PROM_CONSOLE) 1002 printf("consinit: %susing prom console\n", 1003 pmap_uses_prom_console() ? "" : "not "); 1004 #endif 1005 } 1006 1007 #include "pckbc.h" 1008 #include "pckbd.h" 1009 #if (NPCKBC > 0) && (NPCKBD == 0) 1010 1011 #include <machine/bus.h> 1012 #include <dev/isa/pckbcvar.h> 1013 1014 /* 1015 * This is called by the pbkbc driver if no pckbd is configured. 1016 * On the i386, it is used to glue in the old, deprecated console 1017 * code. On the Alpha, it does nothing. 1018 */ 1019 int 1020 pckbc_machdep_cnattach(kbctag, kbcslot) 1021 pckbc_tag_t kbctag; 1022 pckbc_slot_t kbcslot; 1023 { 1024 1025 return (ENXIO); 1026 } 1027 #endif /* NPCKBC > 0 && NPCKBD == 0 */ 1028 1029 void 1030 cpu_startup() 1031 { 1032 register unsigned i; 1033 int base, residual; 1034 vaddr_t minaddr, maxaddr; 1035 vsize_t size; 1036 #if defined(DEBUG) 1037 extern int pmapdebug; 1038 int opmapdebug = pmapdebug; 1039 1040 pmapdebug = 0; 1041 #endif 1042 1043 /* 1044 * Good {morning,afternoon,evening,night}. 1045 */ 1046 printf(version); 1047 identifycpu(); 1048 printf("real mem = %lu (%lu reserved for PROM, %lu used by NetBSD)\n", 1049 ((psize_t) totalphysmem << (psize_t) PAGE_SHIFT), 1050 ptoa(resvmem), ptoa(physmem)); 1051 if (unusedmem) 1052 printf("WARNING: unused memory = %d bytes\n", ctob(unusedmem)); 1053 if (unknownmem) 1054 printf("WARNING: %d bytes of memory with unknown purpose\n", 1055 ctob(unknownmem)); 1056 1057 /* 1058 * Allocate virtual address space for file I/O buffers. 1059 * Note they are different than the array of headers, 'buf', 1060 * and usually occupy more virtual memory than physical. 1061 */ 1062 size = MAXBSIZE * nbuf; 1063 #if defined(UVM) 1064 if (uvm_map(kernel_map, (vaddr_t *) &buffers, round_page(size), 1065 NULL, UVM_UNKNOWN_OFFSET, 1066 UVM_MAPFLAG(UVM_PROT_NONE, UVM_PROT_NONE, UVM_INH_NONE, 1067 UVM_ADV_NORMAL, 0)) != KERN_SUCCESS) 1068 panic("startup: cannot allocate VM for buffers"); 1069 #else 1070 buffer_map = kmem_suballoc(kernel_map, (vaddr_t *)&buffers, 1071 &maxaddr, size, TRUE); 1072 minaddr = (vaddr_t)buffers; 1073 if (vm_map_find(buffer_map, vm_object_allocate(size), (vaddr_t)0, 1074 &minaddr, size, FALSE) != KERN_SUCCESS) 1075 panic("startup: cannot allocate buffers"); 1076 #endif /* UVM */ 1077 base = bufpages / nbuf; 1078 residual = bufpages % nbuf; 1079 for (i = 0; i < nbuf; i++) { 1080 #if defined(UVM) 1081 vsize_t curbufsize; 1082 vaddr_t curbuf; 1083 struct vm_page *pg; 1084 1085 /* 1086 * Each buffer has MAXBSIZE bytes of VM space allocated. Of 1087 * that MAXBSIZE space, we allocate and map (base+1) pages 1088 * for the first "residual" buffers, and then we allocate 1089 * "base" pages for the rest. 1090 */ 1091 curbuf = (vaddr_t) buffers + (i * MAXBSIZE); 1092 curbufsize = CLBYTES * ((i < residual) ? (base+1) : base); 1093 1094 while (curbufsize) { 1095 pg = uvm_pagealloc(NULL, 0, NULL); 1096 if (pg == NULL) 1097 panic("cpu_startup: not enough memory for " 1098 "buffer cache"); 1099 #if defined(PMAP_NEW) 1100 pmap_kenter_pgs(curbuf, &pg, 1); 1101 #else 1102 pmap_enter(kernel_map->pmap, curbuf, 1103 VM_PAGE_TO_PHYS(pg), VM_PROT_ALL, TRUE); 1104 #endif 1105 curbuf += PAGE_SIZE; 1106 curbufsize -= PAGE_SIZE; 1107 } 1108 #else /* ! UVM */ 1109 vsize_t curbufsize; 1110 vaddr_t curbuf; 1111 1112 /* 1113 * First <residual> buffers get (base+1) physical pages 1114 * allocated for them. The rest get (base) physical pages. 1115 * 1116 * The rest of each buffer occupies virtual space, 1117 * but has no physical memory allocated for it. 1118 */ 1119 curbuf = (vaddr_t)buffers + i * MAXBSIZE; 1120 curbufsize = CLBYTES * (i < residual ? base+1 : base); 1121 vm_map_pageable(buffer_map, curbuf, curbuf+curbufsize, FALSE); 1122 vm_map_simplify(buffer_map, curbuf); 1123 #endif /* UVM */ 1124 } 1125 /* 1126 * Allocate a submap for exec arguments. This map effectively 1127 * limits the number of processes exec'ing at any time. 1128 */ 1129 #if defined(UVM) 1130 exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 1131 16 * NCARGS, TRUE, FALSE, NULL); 1132 #else 1133 exec_map = kmem_suballoc(kernel_map, &minaddr, &maxaddr, 1134 16 * NCARGS, TRUE); 1135 #endif 1136 1137 /* 1138 * Allocate a submap for physio 1139 */ 1140 #if defined(UVM) 1141 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 1142 VM_PHYS_SIZE, TRUE, FALSE, NULL); 1143 #else 1144 phys_map = kmem_suballoc(kernel_map, &minaddr, &maxaddr, 1145 VM_PHYS_SIZE, TRUE); 1146 #endif 1147 1148 /* 1149 * Finally, allocate mbuf cluster submap. 1150 */ 1151 #if defined(UVM) 1152 mb_map = uvm_km_suballoc(kernel_map, (vaddr_t *)&mbutl, &maxaddr, 1153 VM_MBUF_SIZE, FALSE, FALSE, NULL); 1154 #else 1155 mb_map = kmem_suballoc(kernel_map, (vaddr_t *)&mbutl, &maxaddr, 1156 VM_MBUF_SIZE, FALSE); 1157 #endif 1158 /* 1159 * Initialize callouts 1160 */ 1161 callfree = callout; 1162 for (i = 1; i < ncallout; i++) 1163 callout[i-1].c_next = &callout[i]; 1164 callout[i-1].c_next = NULL; 1165 1166 #if defined(DEBUG) 1167 pmapdebug = opmapdebug; 1168 #endif 1169 #if defined(UVM) 1170 printf("avail mem = %ld\n", (long)ptoa(uvmexp.free)); 1171 #else 1172 printf("avail mem = %ld\n", (long)ptoa(cnt.v_free_count)); 1173 #endif 1174 #if 0 1175 { 1176 extern u_long pmap_pages_stolen; 1177 printf("stolen memory for VM structures = %ld bytes\n", 1178 pmap_pages_stolen * PAGE_SIZE); 1179 } 1180 #endif 1181 printf("using %ld buffers containing %ld bytes of memory\n", 1182 (long)nbuf, (long)(bufpages * CLBYTES)); 1183 1184 /* 1185 * Set up buffers, so they can be used to read disk labels. 1186 */ 1187 bufinit(); 1188 1189 /* 1190 * Set up the HWPCB so that it's safe to configure secondary 1191 * CPUs. 1192 */ 1193 hwrpb_primary_init(); 1194 1195 /* 1196 * Configure the system. 1197 */ 1198 configure(); 1199 } 1200 1201 /* 1202 * Retrieve the platform name from the DSR. 1203 */ 1204 const char * 1205 alpha_dsr_sysname() 1206 { 1207 struct dsrdb *dsr; 1208 const char *sysname; 1209 1210 /* 1211 * DSR does not exist on early HWRPB versions. 1212 */ 1213 if (hwrpb->rpb_version < HWRPB_DSRDB_MINVERS) 1214 return (NULL); 1215 1216 dsr = (struct dsrdb *)(((caddr_t)hwrpb) + hwrpb->rpb_dsrdb_off); 1217 sysname = (const char *)((caddr_t)dsr + (dsr->dsr_sysname_off + 1218 sizeof(u_int64_t))); 1219 return (sysname); 1220 } 1221 1222 /* 1223 * Lookup the system specified system variation in the provided table, 1224 * returning the model string on match. 1225 */ 1226 const char * 1227 alpha_variation_name(variation, avtp) 1228 u_int64_t variation; 1229 const struct alpha_variation_table *avtp; 1230 { 1231 int i; 1232 1233 for (i = 0; avtp[i].avt_model != NULL; i++) 1234 if (avtp[i].avt_variation == variation) 1235 return (avtp[i].avt_model); 1236 return (NULL); 1237 } 1238 1239 /* 1240 * Generate a default platform name based for unknown system variations. 1241 */ 1242 const char * 1243 alpha_unknown_sysname() 1244 { 1245 static char s[128]; /* safe size */ 1246 1247 sprintf(s, "%s family, unknown model variation 0x%lx", 1248 platform.family, hwrpb->rpb_variation & SV_ST_MASK); 1249 return ((const char *)s); 1250 } 1251 1252 void 1253 identifycpu() 1254 { 1255 1256 /* 1257 * print out CPU identification information. 1258 */ 1259 printf("%s, %ldMHz\n", cpu_model, 1260 hwrpb->rpb_cc_freq / 1000000); /* XXX true for 21164? */ 1261 printf("%ld byte page size, %d processor%s.\n", 1262 hwrpb->rpb_page_size, ncpus, ncpus == 1 ? "" : "s"); 1263 #if 0 1264 /* this isn't defined for any systems that we run on? */ 1265 printf("serial number 0x%lx 0x%lx\n", 1266 ((long *)hwrpb->rpb_ssn)[0], ((long *)hwrpb->rpb_ssn)[1]); 1267 1268 /* and these aren't particularly useful! */ 1269 printf("variation: 0x%lx, revision 0x%lx\n", 1270 hwrpb->rpb_variation, *(long *)hwrpb->rpb_revision); 1271 #endif 1272 } 1273 1274 int waittime = -1; 1275 struct pcb dumppcb; 1276 1277 void 1278 cpu_reboot(howto, bootstr) 1279 int howto; 1280 char *bootstr; 1281 { 1282 extern int cold; 1283 #if defined(MULTIPROCESSOR) 1284 #if 0 /* XXX See below. */ 1285 u_long cpu_id; 1286 #endif 1287 #endif 1288 1289 #if defined(MULTIPROCESSOR) 1290 /* We must be running on the primary CPU. */ 1291 if (alpha_pal_whami() != hwrpb->rpb_primary_cpu_id) 1292 panic("cpu_reboot: not on primary CPU!"); 1293 #endif 1294 1295 /* If system is cold, just halt. */ 1296 if (cold) { 1297 howto |= RB_HALT; 1298 goto haltsys; 1299 } 1300 1301 /* If "always halt" was specified as a boot flag, obey. */ 1302 if ((boothowto & RB_HALT) != 0) 1303 howto |= RB_HALT; 1304 1305 boothowto = howto; 1306 if ((howto & RB_NOSYNC) == 0 && waittime < 0) { 1307 waittime = 0; 1308 vfs_shutdown(); 1309 /* 1310 * If we've been adjusting the clock, the todr 1311 * will be out of synch; adjust it now. 1312 */ 1313 resettodr(); 1314 } 1315 1316 /* Disable interrupts. */ 1317 splhigh(); 1318 1319 /* If rebooting and a dump is requested do it. */ 1320 #if 0 1321 if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP) 1322 #else 1323 if (howto & RB_DUMP) 1324 #endif 1325 dumpsys(); 1326 1327 haltsys: 1328 1329 /* run any shutdown hooks */ 1330 doshutdownhooks(); 1331 1332 #if defined(MULTIPROCESSOR) 1333 #if 0 /* XXX doesn't work when called from here?! */ 1334 /* Kill off any secondary CPUs. */ 1335 for (cpu_id = 0; cpu_id < hwrpb->rpb_pcs_cnt; cpu_id++) { 1336 if (cpu_id == hwrpb->rpb_primary_cpu_id || 1337 cpus[cpu_id] == NULL) 1338 continue; 1339 cpu_halt_secondary(cpu_id); 1340 } 1341 #endif 1342 #endif 1343 1344 #ifdef BOOTKEY 1345 printf("hit any key to %s...\n", howto & RB_HALT ? "halt" : "reboot"); 1346 cnpollc(1); /* for proper keyboard command handling */ 1347 cngetc(); 1348 cnpollc(0); 1349 printf("\n"); 1350 #endif 1351 1352 /* Finally, powerdown/halt/reboot the system. */ 1353 if ((howto && RB_POWERDOWN) == RB_POWERDOWN && 1354 platform.powerdown != NULL) { 1355 (*platform.powerdown)(); 1356 printf("WARNING: powerdown failed!\n"); 1357 } 1358 printf("%s\n\n", howto & RB_HALT ? "halted." : "rebooting..."); 1359 prom_halt(howto & RB_HALT); 1360 /*NOTREACHED*/ 1361 } 1362 1363 /* 1364 * These variables are needed by /sbin/savecore 1365 */ 1366 u_long dumpmag = 0x8fca0101; /* magic number */ 1367 int dumpsize = 0; /* pages */ 1368 long dumplo = 0; /* blocks */ 1369 1370 /* 1371 * cpu_dumpsize: calculate size of machine-dependent kernel core dump headers. 1372 */ 1373 int 1374 cpu_dumpsize() 1375 { 1376 int size; 1377 1378 size = ALIGN(sizeof(kcore_seg_t)) + ALIGN(sizeof(cpu_kcore_hdr_t)) + 1379 ALIGN(mem_cluster_cnt * sizeof(phys_ram_seg_t)); 1380 if (roundup(size, dbtob(1)) != dbtob(1)) 1381 return -1; 1382 1383 return (1); 1384 } 1385 1386 /* 1387 * cpu_dump_mempagecnt: calculate size of RAM (in pages) to be dumped. 1388 */ 1389 u_long 1390 cpu_dump_mempagecnt() 1391 { 1392 u_long i, n; 1393 1394 n = 0; 1395 for (i = 0; i < mem_cluster_cnt; i++) 1396 n += atop(mem_clusters[i].size); 1397 return (n); 1398 } 1399 1400 /* 1401 * cpu_dump: dump machine-dependent kernel core dump headers. 1402 */ 1403 int 1404 cpu_dump() 1405 { 1406 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1407 char buf[dbtob(1)]; 1408 kcore_seg_t *segp; 1409 cpu_kcore_hdr_t *cpuhdrp; 1410 phys_ram_seg_t *memsegp; 1411 int i; 1412 1413 dump = bdevsw[major(dumpdev)].d_dump; 1414 1415 bzero(buf, sizeof buf); 1416 segp = (kcore_seg_t *)buf; 1417 cpuhdrp = (cpu_kcore_hdr_t *)&buf[ALIGN(sizeof(*segp))]; 1418 memsegp = (phys_ram_seg_t *)&buf[ ALIGN(sizeof(*segp)) + 1419 ALIGN(sizeof(*cpuhdrp))]; 1420 1421 /* 1422 * Generate a segment header. 1423 */ 1424 CORE_SETMAGIC(*segp, KCORE_MAGIC, MID_MACHINE, CORE_CPU); 1425 segp->c_size = dbtob(1) - ALIGN(sizeof(*segp)); 1426 1427 /* 1428 * Add the machine-dependent header info. 1429 */ 1430 cpuhdrp->lev1map_pa = ALPHA_K0SEG_TO_PHYS((vaddr_t)kernel_lev1map); 1431 cpuhdrp->page_size = PAGE_SIZE; 1432 cpuhdrp->nmemsegs = mem_cluster_cnt; 1433 1434 /* 1435 * Fill in the memory segment descriptors. 1436 */ 1437 for (i = 0; i < mem_cluster_cnt; i++) { 1438 memsegp[i].start = mem_clusters[i].start; 1439 memsegp[i].size = mem_clusters[i].size & ~PAGE_MASK; 1440 } 1441 1442 return (dump(dumpdev, dumplo, (caddr_t)buf, dbtob(1))); 1443 } 1444 1445 /* 1446 * This is called by main to set dumplo and dumpsize. 1447 * Dumps always skip the first CLBYTES of disk space 1448 * in case there might be a disk label stored there. 1449 * If there is extra space, put dump at the end to 1450 * reduce the chance that swapping trashes it. 1451 */ 1452 void 1453 cpu_dumpconf() 1454 { 1455 int nblks, dumpblks; /* size of dump area */ 1456 int maj; 1457 1458 if (dumpdev == NODEV) 1459 goto bad; 1460 maj = major(dumpdev); 1461 if (maj < 0 || maj >= nblkdev) 1462 panic("dumpconf: bad dumpdev=0x%x", dumpdev); 1463 if (bdevsw[maj].d_psize == NULL) 1464 goto bad; 1465 nblks = (*bdevsw[maj].d_psize)(dumpdev); 1466 if (nblks <= ctod(1)) 1467 goto bad; 1468 1469 dumpblks = cpu_dumpsize(); 1470 if (dumpblks < 0) 1471 goto bad; 1472 dumpblks += ctod(cpu_dump_mempagecnt()); 1473 1474 /* If dump won't fit (incl. room for possible label), punt. */ 1475 if (dumpblks > (nblks - ctod(1))) 1476 goto bad; 1477 1478 /* Put dump at end of partition */ 1479 dumplo = nblks - dumpblks; 1480 1481 /* dumpsize is in page units, and doesn't include headers. */ 1482 dumpsize = cpu_dump_mempagecnt(); 1483 return; 1484 1485 bad: 1486 dumpsize = 0; 1487 return; 1488 } 1489 1490 /* 1491 * Dump the kernel's image to the swap partition. 1492 */ 1493 #define BYTES_PER_DUMP NBPG 1494 1495 void 1496 dumpsys() 1497 { 1498 u_long totalbytesleft, bytes, i, n, memcl; 1499 u_long maddr; 1500 int psize; 1501 daddr_t blkno; 1502 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1503 int error; 1504 1505 /* Save registers. */ 1506 savectx(&dumppcb); 1507 1508 msgbufenabled = 0; /* don't record dump msgs in msgbuf */ 1509 if (dumpdev == NODEV) 1510 return; 1511 1512 /* 1513 * For dumps during autoconfiguration, 1514 * if dump device has already configured... 1515 */ 1516 if (dumpsize == 0) 1517 cpu_dumpconf(); 1518 if (dumplo <= 0) { 1519 printf("\ndump to dev %u,%u not possible\n", major(dumpdev), 1520 minor(dumpdev)); 1521 return; 1522 } 1523 printf("\ndumping to dev %u,%u offset %ld\n", major(dumpdev), 1524 minor(dumpdev), dumplo); 1525 1526 psize = (*bdevsw[major(dumpdev)].d_psize)(dumpdev); 1527 printf("dump "); 1528 if (psize == -1) { 1529 printf("area unavailable\n"); 1530 return; 1531 } 1532 1533 /* XXX should purge all outstanding keystrokes. */ 1534 1535 if ((error = cpu_dump()) != 0) 1536 goto err; 1537 1538 totalbytesleft = ptoa(cpu_dump_mempagecnt()); 1539 blkno = dumplo + cpu_dumpsize(); 1540 dump = bdevsw[major(dumpdev)].d_dump; 1541 error = 0; 1542 1543 for (memcl = 0; memcl < mem_cluster_cnt; memcl++) { 1544 maddr = mem_clusters[memcl].start; 1545 bytes = mem_clusters[memcl].size & ~PAGE_MASK; 1546 1547 for (i = 0; i < bytes; i += n, totalbytesleft -= n) { 1548 1549 /* Print out how many MBs we to go. */ 1550 if ((totalbytesleft % (1024*1024)) == 0) 1551 printf("%d ", totalbytesleft / (1024 * 1024)); 1552 1553 /* Limit size for next transfer. */ 1554 n = bytes - i; 1555 if (n > BYTES_PER_DUMP) 1556 n = BYTES_PER_DUMP; 1557 1558 error = (*dump)(dumpdev, blkno, 1559 (caddr_t)ALPHA_PHYS_TO_K0SEG(maddr), n); 1560 if (error) 1561 goto err; 1562 maddr += n; 1563 blkno += btodb(n); /* XXX? */ 1564 1565 /* XXX should look for keystrokes, to cancel. */ 1566 } 1567 } 1568 1569 err: 1570 switch (error) { 1571 1572 case ENXIO: 1573 printf("device bad\n"); 1574 break; 1575 1576 case EFAULT: 1577 printf("device not ready\n"); 1578 break; 1579 1580 case EINVAL: 1581 printf("area improper\n"); 1582 break; 1583 1584 case EIO: 1585 printf("i/o error\n"); 1586 break; 1587 1588 case EINTR: 1589 printf("aborted from console\n"); 1590 break; 1591 1592 case 0: 1593 printf("succeeded\n"); 1594 break; 1595 1596 default: 1597 printf("error %d\n", error); 1598 break; 1599 } 1600 printf("\n\n"); 1601 delay(1000); 1602 } 1603 1604 void 1605 frametoreg(framep, regp) 1606 struct trapframe *framep; 1607 struct reg *regp; 1608 { 1609 1610 regp->r_regs[R_V0] = framep->tf_regs[FRAME_V0]; 1611 regp->r_regs[R_T0] = framep->tf_regs[FRAME_T0]; 1612 regp->r_regs[R_T1] = framep->tf_regs[FRAME_T1]; 1613 regp->r_regs[R_T2] = framep->tf_regs[FRAME_T2]; 1614 regp->r_regs[R_T3] = framep->tf_regs[FRAME_T3]; 1615 regp->r_regs[R_T4] = framep->tf_regs[FRAME_T4]; 1616 regp->r_regs[R_T5] = framep->tf_regs[FRAME_T5]; 1617 regp->r_regs[R_T6] = framep->tf_regs[FRAME_T6]; 1618 regp->r_regs[R_T7] = framep->tf_regs[FRAME_T7]; 1619 regp->r_regs[R_S0] = framep->tf_regs[FRAME_S0]; 1620 regp->r_regs[R_S1] = framep->tf_regs[FRAME_S1]; 1621 regp->r_regs[R_S2] = framep->tf_regs[FRAME_S2]; 1622 regp->r_regs[R_S3] = framep->tf_regs[FRAME_S3]; 1623 regp->r_regs[R_S4] = framep->tf_regs[FRAME_S4]; 1624 regp->r_regs[R_S5] = framep->tf_regs[FRAME_S5]; 1625 regp->r_regs[R_S6] = framep->tf_regs[FRAME_S6]; 1626 regp->r_regs[R_A0] = framep->tf_regs[FRAME_A0]; 1627 regp->r_regs[R_A1] = framep->tf_regs[FRAME_A1]; 1628 regp->r_regs[R_A2] = framep->tf_regs[FRAME_A2]; 1629 regp->r_regs[R_A3] = framep->tf_regs[FRAME_A3]; 1630 regp->r_regs[R_A4] = framep->tf_regs[FRAME_A4]; 1631 regp->r_regs[R_A5] = framep->tf_regs[FRAME_A5]; 1632 regp->r_regs[R_T8] = framep->tf_regs[FRAME_T8]; 1633 regp->r_regs[R_T9] = framep->tf_regs[FRAME_T9]; 1634 regp->r_regs[R_T10] = framep->tf_regs[FRAME_T10]; 1635 regp->r_regs[R_T11] = framep->tf_regs[FRAME_T11]; 1636 regp->r_regs[R_RA] = framep->tf_regs[FRAME_RA]; 1637 regp->r_regs[R_T12] = framep->tf_regs[FRAME_T12]; 1638 regp->r_regs[R_AT] = framep->tf_regs[FRAME_AT]; 1639 regp->r_regs[R_GP] = framep->tf_regs[FRAME_GP]; 1640 /* regp->r_regs[R_SP] = framep->tf_regs[FRAME_SP]; XXX */ 1641 regp->r_regs[R_ZERO] = 0; 1642 } 1643 1644 void 1645 regtoframe(regp, framep) 1646 struct reg *regp; 1647 struct trapframe *framep; 1648 { 1649 1650 framep->tf_regs[FRAME_V0] = regp->r_regs[R_V0]; 1651 framep->tf_regs[FRAME_T0] = regp->r_regs[R_T0]; 1652 framep->tf_regs[FRAME_T1] = regp->r_regs[R_T1]; 1653 framep->tf_regs[FRAME_T2] = regp->r_regs[R_T2]; 1654 framep->tf_regs[FRAME_T3] = regp->r_regs[R_T3]; 1655 framep->tf_regs[FRAME_T4] = regp->r_regs[R_T4]; 1656 framep->tf_regs[FRAME_T5] = regp->r_regs[R_T5]; 1657 framep->tf_regs[FRAME_T6] = regp->r_regs[R_T6]; 1658 framep->tf_regs[FRAME_T7] = regp->r_regs[R_T7]; 1659 framep->tf_regs[FRAME_S0] = regp->r_regs[R_S0]; 1660 framep->tf_regs[FRAME_S1] = regp->r_regs[R_S1]; 1661 framep->tf_regs[FRAME_S2] = regp->r_regs[R_S2]; 1662 framep->tf_regs[FRAME_S3] = regp->r_regs[R_S3]; 1663 framep->tf_regs[FRAME_S4] = regp->r_regs[R_S4]; 1664 framep->tf_regs[FRAME_S5] = regp->r_regs[R_S5]; 1665 framep->tf_regs[FRAME_S6] = regp->r_regs[R_S6]; 1666 framep->tf_regs[FRAME_A0] = regp->r_regs[R_A0]; 1667 framep->tf_regs[FRAME_A1] = regp->r_regs[R_A1]; 1668 framep->tf_regs[FRAME_A2] = regp->r_regs[R_A2]; 1669 framep->tf_regs[FRAME_A3] = regp->r_regs[R_A3]; 1670 framep->tf_regs[FRAME_A4] = regp->r_regs[R_A4]; 1671 framep->tf_regs[FRAME_A5] = regp->r_regs[R_A5]; 1672 framep->tf_regs[FRAME_T8] = regp->r_regs[R_T8]; 1673 framep->tf_regs[FRAME_T9] = regp->r_regs[R_T9]; 1674 framep->tf_regs[FRAME_T10] = regp->r_regs[R_T10]; 1675 framep->tf_regs[FRAME_T11] = regp->r_regs[R_T11]; 1676 framep->tf_regs[FRAME_RA] = regp->r_regs[R_RA]; 1677 framep->tf_regs[FRAME_T12] = regp->r_regs[R_T12]; 1678 framep->tf_regs[FRAME_AT] = regp->r_regs[R_AT]; 1679 framep->tf_regs[FRAME_GP] = regp->r_regs[R_GP]; 1680 /* framep->tf_regs[FRAME_SP] = regp->r_regs[R_SP]; XXX */ 1681 /* ??? = regp->r_regs[R_ZERO]; */ 1682 } 1683 1684 void 1685 printregs(regp) 1686 struct reg *regp; 1687 { 1688 int i; 1689 1690 for (i = 0; i < 32; i++) 1691 printf("R%d:\t0x%016lx%s", i, regp->r_regs[i], 1692 i & 1 ? "\n" : "\t"); 1693 } 1694 1695 void 1696 regdump(framep) 1697 struct trapframe *framep; 1698 { 1699 struct reg reg; 1700 1701 frametoreg(framep, ®); 1702 reg.r_regs[R_SP] = alpha_pal_rdusp(); 1703 1704 printf("REGISTERS:\n"); 1705 printregs(®); 1706 } 1707 1708 #ifdef DEBUG 1709 int sigdebug = 0; 1710 int sigpid = 0; 1711 #define SDB_FOLLOW 0x01 1712 #define SDB_KSTACK 0x02 1713 #endif 1714 1715 /* 1716 * Send an interrupt to process. 1717 */ 1718 void 1719 sendsig(catcher, sig, mask, code) 1720 sig_t catcher; 1721 int sig; 1722 sigset_t *mask; 1723 u_long code; 1724 { 1725 struct proc *p = curproc; 1726 struct sigcontext *scp, ksc; 1727 struct trapframe *frame; 1728 struct sigacts *psp = p->p_sigacts; 1729 int onstack, fsize, rndfsize; 1730 extern struct proc *fpcurproc; 1731 1732 frame = p->p_md.md_tf; 1733 1734 /* Do we need to jump onto the signal stack? */ 1735 onstack = 1736 (psp->ps_sigstk.ss_flags & (SS_DISABLE | SS_ONSTACK)) == 0 && 1737 (psp->ps_sigact[sig].sa_flags & SA_ONSTACK) != 0; 1738 1739 /* Allocate space for the signal handler context. */ 1740 fsize = sizeof(ksc); 1741 rndfsize = ((fsize + 15) / 16) * 16; 1742 1743 if (onstack) 1744 scp = (struct sigcontext *)((caddr_t)psp->ps_sigstk.ss_sp + 1745 psp->ps_sigstk.ss_size); 1746 else 1747 scp = (struct sigcontext *)(alpha_pal_rdusp()); 1748 scp = (struct sigcontext *)((caddr_t)scp - rndfsize); 1749 1750 #ifdef DEBUG 1751 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1752 printf("sendsig(%d): sig %d ssp %p usp %p\n", p->p_pid, 1753 sig, &onstack, scp); 1754 #endif 1755 1756 /* Build stack frame for signal trampoline. */ 1757 ksc.sc_pc = frame->tf_regs[FRAME_PC]; 1758 ksc.sc_ps = frame->tf_regs[FRAME_PS]; 1759 1760 /* Save register context. */ 1761 frametoreg(frame, (struct reg *)ksc.sc_regs); 1762 ksc.sc_regs[R_ZERO] = 0xACEDBADE; /* magic number */ 1763 ksc.sc_regs[R_SP] = alpha_pal_rdusp(); 1764 1765 /* save the floating-point state, if necessary, then copy it. */ 1766 if (p == fpcurproc) { 1767 alpha_pal_wrfen(1); 1768 savefpstate(&p->p_addr->u_pcb.pcb_fp); 1769 alpha_pal_wrfen(0); 1770 fpcurproc = NULL; 1771 } 1772 ksc.sc_ownedfp = p->p_md.md_flags & MDP_FPUSED; 1773 bcopy(&p->p_addr->u_pcb.pcb_fp, (struct fpreg *)ksc.sc_fpregs, 1774 sizeof(struct fpreg)); 1775 ksc.sc_fp_control = 0; /* XXX ? */ 1776 bzero(ksc.sc_reserved, sizeof ksc.sc_reserved); /* XXX */ 1777 bzero(ksc.sc_xxx, sizeof ksc.sc_xxx); /* XXX */ 1778 1779 /* Save signal stack. */ 1780 ksc.sc_onstack = psp->ps_sigstk.ss_flags & SS_ONSTACK; 1781 1782 /* Save signal mask. */ 1783 ksc.sc_mask = *mask; 1784 1785 #ifdef COMPAT_13 1786 /* 1787 * XXX We always have to save an old style signal mask because 1788 * XXX we might be delivering a signal to a process which will 1789 * XXX escape from the signal in a non-standard way and invoke 1790 * XXX sigreturn() directly. 1791 */ 1792 { 1793 /* Note: it's a long in the stack frame. */ 1794 sigset13_t mask13; 1795 1796 native_sigset_to_sigset13(mask, &mask13); 1797 ksc.__sc_mask13 = mask13; 1798 } 1799 #endif 1800 1801 #ifdef COMPAT_OSF1 1802 /* 1803 * XXX Create an OSF/1-style sigcontext and associated goo. 1804 */ 1805 #endif 1806 1807 if (copyout(&ksc, (caddr_t)scp, fsize) != 0) { 1808 /* 1809 * Process has trashed its stack; give it an illegal 1810 * instruction to halt it in its tracks. 1811 */ 1812 #ifdef DEBUG 1813 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1814 printf("sendsig(%d): copyout failed on sig %d\n", 1815 p->p_pid, sig); 1816 #endif 1817 sigexit(p, SIGILL); 1818 /* NOTREACHED */ 1819 } 1820 #ifdef DEBUG 1821 if (sigdebug & SDB_FOLLOW) 1822 printf("sendsig(%d): sig %d scp %p code %lx\n", p->p_pid, sig, 1823 scp, code); 1824 #endif 1825 1826 /* Set up the registers to return to sigcode. */ 1827 frame->tf_regs[FRAME_PC] = (u_int64_t)psp->ps_sigcode; 1828 frame->tf_regs[FRAME_A0] = sig; 1829 frame->tf_regs[FRAME_A1] = code; 1830 frame->tf_regs[FRAME_A2] = (u_int64_t)scp; 1831 frame->tf_regs[FRAME_T12] = (u_int64_t)catcher; /* t12 is pv */ 1832 alpha_pal_wrusp((unsigned long)scp); 1833 1834 /* Remember that we're now on the signal stack. */ 1835 if (onstack) 1836 psp->ps_sigstk.ss_flags |= SS_ONSTACK; 1837 1838 #ifdef DEBUG 1839 if (sigdebug & SDB_FOLLOW) 1840 printf("sendsig(%d): pc %lx, catcher %lx\n", p->p_pid, 1841 frame->tf_regs[FRAME_PC], frame->tf_regs[FRAME_A3]); 1842 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1843 printf("sendsig(%d): sig %d returns\n", 1844 p->p_pid, sig); 1845 #endif 1846 } 1847 1848 /* 1849 * System call to cleanup state after a signal 1850 * has been taken. Reset signal mask and 1851 * stack state from context left by sendsig (above). 1852 * Return to previous pc and psl as specified by 1853 * context left by sendsig. Check carefully to 1854 * make sure that the user has not modified the 1855 * psl to gain improper priviledges or to cause 1856 * a machine fault. 1857 */ 1858 /* ARGSUSED */ 1859 int 1860 sys___sigreturn14(p, v, retval) 1861 struct proc *p; 1862 void *v; 1863 register_t *retval; 1864 { 1865 struct sys___sigreturn14_args /* { 1866 syscallarg(struct sigcontext *) sigcntxp; 1867 } */ *uap = v; 1868 struct sigcontext *scp, ksc; 1869 extern struct proc *fpcurproc; 1870 1871 /* 1872 * The trampoline code hands us the context. 1873 * It is unsafe to keep track of it ourselves, in the event that a 1874 * program jumps out of a signal handler. 1875 */ 1876 scp = SCARG(uap, sigcntxp); 1877 #ifdef DEBUG 1878 if (sigdebug & SDB_FOLLOW) 1879 printf("sigreturn: pid %d, scp %p\n", p->p_pid, scp); 1880 #endif 1881 if (ALIGN(scp) != (u_int64_t)scp) 1882 return (EINVAL); 1883 1884 if (copyin((caddr_t)scp, &ksc, sizeof(ksc)) != 0) 1885 return (EFAULT); 1886 1887 if (ksc.sc_regs[R_ZERO] != 0xACEDBADE) /* magic number */ 1888 return (EINVAL); 1889 1890 /* Restore register context. */ 1891 p->p_md.md_tf->tf_regs[FRAME_PC] = ksc.sc_pc; 1892 p->p_md.md_tf->tf_regs[FRAME_PS] = 1893 (ksc.sc_ps | ALPHA_PSL_USERSET) & ~ALPHA_PSL_USERCLR; 1894 1895 regtoframe((struct reg *)ksc.sc_regs, p->p_md.md_tf); 1896 alpha_pal_wrusp(ksc.sc_regs[R_SP]); 1897 1898 /* XXX ksc.sc_ownedfp ? */ 1899 if (p == fpcurproc) 1900 fpcurproc = NULL; 1901 bcopy((struct fpreg *)ksc.sc_fpregs, &p->p_addr->u_pcb.pcb_fp, 1902 sizeof(struct fpreg)); 1903 /* XXX ksc.sc_fp_control ? */ 1904 1905 /* Restore signal stack. */ 1906 if (ksc.sc_onstack & SS_ONSTACK) 1907 p->p_sigacts->ps_sigstk.ss_flags |= SS_ONSTACK; 1908 else 1909 p->p_sigacts->ps_sigstk.ss_flags &= ~SS_ONSTACK; 1910 1911 /* Restore signal mask. */ 1912 (void) sigprocmask1(p, SIG_SETMASK, &ksc.sc_mask, 0); 1913 1914 #ifdef DEBUG 1915 if (sigdebug & SDB_FOLLOW) 1916 printf("sigreturn(%d): returns\n", p->p_pid); 1917 #endif 1918 return (EJUSTRETURN); 1919 } 1920 1921 /* 1922 * machine dependent system variables. 1923 */ 1924 int 1925 cpu_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 1926 int *name; 1927 u_int namelen; 1928 void *oldp; 1929 size_t *oldlenp; 1930 void *newp; 1931 size_t newlen; 1932 struct proc *p; 1933 { 1934 dev_t consdev; 1935 1936 /* all sysctl names at this level are terminal */ 1937 if (namelen != 1) 1938 return (ENOTDIR); /* overloaded */ 1939 1940 switch (name[0]) { 1941 case CPU_CONSDEV: 1942 if (cn_tab != NULL) 1943 consdev = cn_tab->cn_dev; 1944 else 1945 consdev = NODEV; 1946 return (sysctl_rdstruct(oldp, oldlenp, newp, &consdev, 1947 sizeof consdev)); 1948 1949 case CPU_ROOT_DEVICE: 1950 return (sysctl_rdstring(oldp, oldlenp, newp, 1951 root_device->dv_xname)); 1952 1953 case CPU_UNALIGNED_PRINT: 1954 return (sysctl_int(oldp, oldlenp, newp, newlen, 1955 &alpha_unaligned_print)); 1956 1957 case CPU_UNALIGNED_FIX: 1958 return (sysctl_int(oldp, oldlenp, newp, newlen, 1959 &alpha_unaligned_fix)); 1960 1961 case CPU_UNALIGNED_SIGBUS: 1962 return (sysctl_int(oldp, oldlenp, newp, newlen, 1963 &alpha_unaligned_sigbus)); 1964 1965 case CPU_BOOTED_KERNEL: 1966 return (sysctl_rdstring(oldp, oldlenp, newp, 1967 bootinfo.booted_kernel)); 1968 1969 default: 1970 return (EOPNOTSUPP); 1971 } 1972 /* NOTREACHED */ 1973 } 1974 1975 /* 1976 * Set registers on exec. 1977 */ 1978 void 1979 setregs(p, pack, stack) 1980 register struct proc *p; 1981 struct exec_package *pack; 1982 u_long stack; 1983 { 1984 struct trapframe *tfp = p->p_md.md_tf; 1985 extern struct proc *fpcurproc; 1986 #ifdef DEBUG 1987 int i; 1988 #endif 1989 1990 #ifdef DEBUG 1991 /* 1992 * Crash and dump, if the user requested it. 1993 */ 1994 if (boothowto & RB_DUMP) 1995 panic("crash requested by boot flags"); 1996 #endif 1997 1998 #ifdef DEBUG 1999 for (i = 0; i < FRAME_SIZE; i++) 2000 tfp->tf_regs[i] = 0xbabefacedeadbeef; 2001 #else 2002 bzero(tfp->tf_regs, FRAME_SIZE * sizeof tfp->tf_regs[0]); 2003 #endif 2004 bzero(&p->p_addr->u_pcb.pcb_fp, sizeof p->p_addr->u_pcb.pcb_fp); 2005 #define FP_RN 2 /* XXX */ 2006 p->p_addr->u_pcb.pcb_fp.fpr_cr = (long)FP_RN << 58; 2007 alpha_pal_wrusp(stack); 2008 tfp->tf_regs[FRAME_PS] = ALPHA_PSL_USERSET; 2009 tfp->tf_regs[FRAME_PC] = pack->ep_entry & ~3; 2010 2011 tfp->tf_regs[FRAME_A0] = stack; /* a0 = sp */ 2012 tfp->tf_regs[FRAME_A1] = 0; /* a1 = rtld cleanup */ 2013 tfp->tf_regs[FRAME_A2] = 0; /* a2 = rtld object */ 2014 tfp->tf_regs[FRAME_A3] = (u_int64_t)PS_STRINGS; /* a3 = ps_strings */ 2015 tfp->tf_regs[FRAME_T12] = tfp->tf_regs[FRAME_PC]; /* a.k.a. PV */ 2016 2017 p->p_md.md_flags &= ~MDP_FPUSED; 2018 if (fpcurproc == p) 2019 fpcurproc = NULL; 2020 } 2021 2022 void 2023 netintr() 2024 { 2025 int n, s; 2026 2027 s = splhigh(); 2028 n = netisr; 2029 netisr = 0; 2030 splx(s); 2031 2032 #define DONETISR(bit, fn) \ 2033 do { \ 2034 if (n & (1 << (bit))) \ 2035 fn; \ 2036 } while (0) 2037 2038 #ifdef INET 2039 #if NARP > 0 2040 DONETISR(NETISR_ARP, arpintr()); 2041 #endif 2042 DONETISR(NETISR_IP, ipintr()); 2043 #endif 2044 #ifdef NETATALK 2045 DONETISR(NETISR_ATALK, atintr()); 2046 #endif 2047 #ifdef NS 2048 DONETISR(NETISR_NS, nsintr()); 2049 #endif 2050 #ifdef ISO 2051 DONETISR(NETISR_ISO, clnlintr()); 2052 #endif 2053 #ifdef CCITT 2054 DONETISR(NETISR_CCITT, ccittintr()); 2055 #endif 2056 #ifdef NATM 2057 DONETISR(NETISR_NATM, natmintr()); 2058 #endif 2059 #if NPPP > 1 2060 DONETISR(NETISR_PPP, pppintr()); 2061 #endif 2062 2063 #undef DONETISR 2064 } 2065 2066 void 2067 do_sir() 2068 { 2069 u_int64_t n; 2070 2071 do { 2072 (void)splhigh(); 2073 n = ssir; 2074 ssir = 0; 2075 splsoft(); /* don't recurse through spl0() */ 2076 2077 #if defined(UVM) 2078 #define COUNT_SOFT uvmexp.softs++ 2079 #else 2080 #define COUNT_SOFT cnt.v_soft++ 2081 #endif 2082 2083 #define DO_SIR(bit, fn) \ 2084 do { \ 2085 if (n & (bit)) { \ 2086 COUNT_SOFT; \ 2087 fn; \ 2088 } \ 2089 } while (0) 2090 2091 DO_SIR(SIR_NET, netintr()); 2092 DO_SIR(SIR_CLOCK, softclock()); 2093 #if NCOM > 0 2094 DO_SIR(SIR_SERIAL, comsoft()); 2095 #endif 2096 2097 #undef COUNT_SOFT 2098 #undef DO_SIR 2099 } while (ssir != 0); 2100 } 2101 2102 int 2103 spl0() 2104 { 2105 2106 if (ssir) 2107 do_sir(); /* it lowers the IPL itself */ 2108 2109 return (alpha_pal_swpipl(ALPHA_PSL_IPL_0)); 2110 } 2111 2112 /* 2113 * The following primitives manipulate the run queues. _whichqs tells which 2114 * of the 32 queues _qs have processes in them. Setrunqueue puts processes 2115 * into queues, Remrunqueue removes them from queues. The running process is 2116 * on no queue, other processes are on a queue related to p->p_priority, 2117 * divided by 4 actually to shrink the 0-127 range of priorities into the 32 2118 * available queues. 2119 */ 2120 /* 2121 * setrunqueue(p) 2122 * proc *p; 2123 * 2124 * Call should be made at splclock(), and p->p_stat should be SRUN. 2125 */ 2126 2127 void 2128 setrunqueue(p) 2129 struct proc *p; 2130 { 2131 int bit; 2132 2133 /* firewall: p->p_back must be NULL */ 2134 if (p->p_back != NULL) 2135 panic("setrunqueue"); 2136 2137 bit = p->p_priority >> 2; 2138 whichqs |= (1 << bit); 2139 p->p_forw = (struct proc *)&qs[bit]; 2140 p->p_back = qs[bit].ph_rlink; 2141 p->p_back->p_forw = p; 2142 qs[bit].ph_rlink = p; 2143 } 2144 2145 /* 2146 * remrunqueue(p) 2147 * 2148 * Call should be made at splclock(). 2149 */ 2150 void 2151 remrunqueue(p) 2152 struct proc *p; 2153 { 2154 int bit; 2155 2156 bit = p->p_priority >> 2; 2157 if ((whichqs & (1 << bit)) == 0) 2158 panic("remrunqueue"); 2159 2160 p->p_back->p_forw = p->p_forw; 2161 p->p_forw->p_back = p->p_back; 2162 p->p_back = NULL; /* for firewall checking. */ 2163 2164 if ((struct proc *)&qs[bit] == qs[bit].ph_link) 2165 whichqs &= ~(1 << bit); 2166 } 2167 2168 /* 2169 * Return the best possible estimate of the time in the timeval 2170 * to which tvp points. Unfortunately, we can't read the hardware registers. 2171 * We guarantee that the time will be greater than the value obtained by a 2172 * previous call. 2173 */ 2174 void 2175 microtime(tvp) 2176 register struct timeval *tvp; 2177 { 2178 int s = splclock(); 2179 static struct timeval lasttime; 2180 2181 *tvp = time; 2182 #ifdef notdef 2183 tvp->tv_usec += clkread(); 2184 while (tvp->tv_usec > 1000000) { 2185 tvp->tv_sec++; 2186 tvp->tv_usec -= 1000000; 2187 } 2188 #endif 2189 if (tvp->tv_sec == lasttime.tv_sec && 2190 tvp->tv_usec <= lasttime.tv_usec && 2191 (tvp->tv_usec = lasttime.tv_usec + 1) > 1000000) { 2192 tvp->tv_sec++; 2193 tvp->tv_usec -= 1000000; 2194 } 2195 lasttime = *tvp; 2196 splx(s); 2197 } 2198 2199 /* 2200 * Wait "n" microseconds. 2201 */ 2202 void 2203 delay(n) 2204 unsigned long n; 2205 { 2206 long N = cycles_per_usec * (n); 2207 2208 while (N > 0) /* XXX */ 2209 N -= 3; /* XXX */ 2210 } 2211 2212 #if defined(COMPAT_OSF1) || 1 /* XXX */ 2213 void cpu_exec_ecoff_setregs __P((struct proc *, struct exec_package *, 2214 u_long)); 2215 2216 void 2217 cpu_exec_ecoff_setregs(p, epp, stack) 2218 struct proc *p; 2219 struct exec_package *epp; 2220 u_long stack; 2221 { 2222 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2223 2224 setregs(p, epp, stack); 2225 p->p_md.md_tf->tf_regs[FRAME_GP] = execp->a.gp_value; 2226 } 2227 2228 /* 2229 * cpu_exec_ecoff_hook(): 2230 * cpu-dependent ECOFF format hook for execve(). 2231 * 2232 * Do any machine-dependent diddling of the exec package when doing ECOFF. 2233 * 2234 */ 2235 int 2236 cpu_exec_ecoff_hook(p, epp) 2237 struct proc *p; 2238 struct exec_package *epp; 2239 { 2240 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2241 extern struct emul emul_netbsd; 2242 #ifdef COMPAT_OSF1 2243 extern struct emul emul_osf1; 2244 #endif 2245 2246 switch (execp->f.f_magic) { 2247 #ifdef COMPAT_OSF1 2248 case ECOFF_MAGIC_ALPHA: 2249 epp->ep_emul = &emul_osf1; 2250 break; 2251 #endif 2252 2253 case ECOFF_MAGIC_NETBSD_ALPHA: 2254 epp->ep_emul = &emul_netbsd; 2255 break; 2256 2257 default: 2258 return ENOEXEC; 2259 } 2260 return 0; 2261 } 2262 #endif 2263 2264 int 2265 alpha_pa_access(pa) 2266 u_long pa; 2267 { 2268 int i; 2269 2270 for (i = 0; i < mem_cluster_cnt; i++) { 2271 if (pa < mem_clusters[i].start) 2272 continue; 2273 if ((pa - mem_clusters[i].start) >= 2274 (mem_clusters[i].size & ~PAGE_MASK)) 2275 continue; 2276 return (mem_clusters[i].size & PAGE_MASK); /* prot */ 2277 } 2278 return (PROT_NONE); 2279 } 2280 2281 /* XXX XXX BEGIN XXX XXX */ 2282 paddr_t alpha_XXX_dmamap_or; /* XXX */ 2283 /* XXX */ 2284 paddr_t /* XXX */ 2285 alpha_XXX_dmamap(v) /* XXX */ 2286 vaddr_t v; /* XXX */ 2287 { /* XXX */ 2288 /* XXX */ 2289 return (vtophys(v) | alpha_XXX_dmamap_or); /* XXX */ 2290 } /* XXX */ 2291 /* XXX XXX END XXX XXX */ 2292 2293 struct mchkinfo * 2294 cpu_mchkinfo() 2295 { 2296 if (mchkinfo_all_cpus == NULL) 2297 return &startup_info; 2298 return mchkinfo_all_cpus + alpha_pal_whami(); 2299 } 2300
Indexes created Tue Oct 14 15:09:51 GMT 2025