machdep.c revision 1.162
1 /* $NetBSD: machdep.c,v 1.162 1999/02/27 06:39:34 scottr 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_bufcache.h" 68 #include "opt_ddb.h" 69 #include "opt_multiprocessor.h" 70 #include "opt_uvm.h" 71 #include "opt_pmap_new.h" 72 #include "opt_dec_3000_300.h" 73 #include "opt_dec_3000_500.h" 74 #include "opt_compat_osf1.h" 75 #include "opt_compat_netbsd.h" 76 #include "opt_inet.h" 77 #include "opt_atalk.h" 78 #include "opt_ccitt.h" 79 #include "opt_iso.h" 80 #include "opt_ns.h" 81 #include "opt_natm.h" 82 #include "opt_sysv.h" 83 84 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 85 86 __KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.162 1999/02/27 06:39:34 scottr Exp $"); 87 88 #include <sys/param.h> 89 #include <sys/systm.h> 90 #include <sys/signalvar.h> 91 #include <sys/kernel.h> 92 #include <sys/map.h> 93 #include <sys/proc.h> 94 #include <sys/buf.h> 95 #include <sys/reboot.h> 96 #include <sys/device.h> 97 #include <sys/file.h> 98 #ifdef REAL_CLISTS 99 #include <sys/clist.h> 100 #endif 101 #include <sys/callout.h> 102 #include <sys/malloc.h> 103 #include <sys/mbuf.h> 104 #include <sys/mman.h> 105 #include <sys/msgbuf.h> 106 #include <sys/ioctl.h> 107 #include <sys/tty.h> 108 #include <sys/user.h> 109 #include <sys/exec.h> 110 #include <sys/exec_ecoff.h> 111 #include <vm/vm.h> 112 #include <sys/sysctl.h> 113 #include <sys/core.h> 114 #include <sys/kcore.h> 115 #include <machine/kcore.h> 116 #ifdef SYSVMSG 117 #include <sys/msg.h> 118 #endif 119 #ifdef SYSVSEM 120 #include <sys/sem.h> 121 #endif 122 #ifdef SYSVSHM 123 #include <sys/shm.h> 124 #endif 125 126 #include <sys/mount.h> 127 #include <sys/syscallargs.h> 128 129 #include <vm/vm_kern.h> 130 131 #if defined(UVM) 132 #include <uvm/uvm_extern.h> 133 #endif 134 135 #include <dev/cons.h> 136 137 #include <machine/autoconf.h> 138 #include <machine/cpu.h> 139 #include <machine/reg.h> 140 #include <machine/rpb.h> 141 #include <machine/prom.h> 142 #include <machine/conf.h> 143 144 #include <alpha/alpha/cpuvar.h> 145 146 #include <net/netisr.h> 147 #include <net/if.h> 148 149 #ifdef INET 150 #include <net/route.h> 151 #include <netinet/in.h> 152 #include <netinet/ip_var.h> 153 #include "arp.h" 154 #if NARP > 0 155 #include <netinet/if_inarp.h> 156 #endif 157 #endif 158 #ifdef NS 159 #include <netns/ns_var.h> 160 #endif 161 #ifdef ISO 162 #include <netiso/iso.h> 163 #include <netiso/clnp.h> 164 #endif 165 #ifdef CCITT 166 #include <netccitt/x25.h> 167 #include <netccitt/pk.h> 168 #include <netccitt/pk_extern.h> 169 #endif 170 #ifdef NATM 171 #include <netnatm/natm.h> 172 #endif 173 #ifdef NETATALK 174 #include <netatalk/at_extern.h> 175 #endif 176 #include "ppp.h" 177 #if NPPP > 0 178 #include <net/ppp_defs.h> 179 #include <net/if_ppp.h> 180 #endif 181 182 #ifdef DDB 183 #include <machine/db_machdep.h> 184 #include <ddb/db_access.h> 185 #include <ddb/db_sym.h> 186 #include <ddb/db_extern.h> 187 #include <ddb/db_interface.h> 188 #endif 189 190 #include <machine/alpha.h> 191 #include <machine/intrcnt.h> 192 193 #include "com.h" 194 #if NCOM > 0 195 extern void comsoft __P((void)); 196 #endif 197 198 #if defined(UVM) 199 vm_map_t exec_map = NULL; 200 vm_map_t mb_map = NULL; 201 vm_map_t phys_map = NULL; 202 #else 203 vm_map_t buffer_map; 204 #endif 205 206 /* 207 * Declare these as initialized data so we can patch them. 208 */ 209 int nswbuf = 0; 210 #ifdef NBUF 211 int nbuf = NBUF; 212 #else 213 int nbuf = 0; 214 #endif 215 216 #ifndef BUFPAGES 217 #define BUFPAGES 0 218 #endif 219 #ifndef BUFCACHE 220 #define BUFCACHE 10 221 #endif 222 223 int bufpages = BUFPAGES; /* optional hardwired count */ 224 int bufcache = BUFCACHE; /* % of RAM to use for buffer cache */ 225 226 caddr_t msgbufaddr; 227 228 int maxmem; /* max memory per process */ 229 230 int totalphysmem; /* total amount of physical memory in system */ 231 int physmem; /* physical memory used by NetBSD + some rsvd */ 232 int resvmem; /* amount of memory reserved for PROM */ 233 int unusedmem; /* amount of memory for OS that we don't use */ 234 int unknownmem; /* amount of memory with an unknown use */ 235 236 int cputype; /* system type, from the RPB */ 237 238 /* 239 * XXX We need an address to which we can assign things so that they 240 * won't be optimized away because we didn't use the value. 241 */ 242 u_int32_t no_optimize; 243 244 /* the following is used externally (sysctl_hw) */ 245 char machine[] = MACHINE; /* from <machine/param.h> */ 246 char machine_arch[] = MACHINE_ARCH; /* from <machine/param.h> */ 247 char cpu_model[128]; 248 249 struct user *proc0paddr; 250 251 /* Number of machine cycles per microsecond */ 252 u_int64_t cycles_per_usec; 253 254 /* number of cpus in the box. really! */ 255 int ncpus; 256 257 /* machine check info array, valloc()'ed in allocsys() */ 258 259 static struct mchkinfo startup_info, 260 *mchkinfo_all_cpus; 261 262 struct bootinfo_kernel bootinfo; 263 264 /* For built-in TCDS */ 265 #if defined(DEC_3000_300) || defined(DEC_3000_500) 266 u_int8_t dec_3000_scsiid[2], dec_3000_scsifast[2]; 267 #endif 268 269 struct platform platform; 270 271 u_int32_t vm_mbuf_size = _VM_MBUF_SIZE; 272 u_int32_t vm_kmem_size = _VM_KMEM_SIZE; 273 u_int32_t vm_phys_size = _VM_PHYS_SIZE; 274 275 #ifdef DDB 276 /* start and end of kernel symbol table */ 277 void *ksym_start, *ksym_end; 278 #endif 279 280 /* for cpu_sysctl() */ 281 int alpha_unaligned_print = 1; /* warn about unaligned accesses */ 282 int alpha_unaligned_fix = 1; /* fix up unaligned accesses */ 283 int alpha_unaligned_sigbus = 0; /* don't SIGBUS on fixed-up accesses */ 284 285 /* 286 * XXX This should be dynamically sized, but we have the chicken-egg problem! 287 * XXX it should also be larger than it is, because not all of the mddt 288 * XXX clusters end up being used for VM. 289 */ 290 phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX]; /* low size bits overloaded */ 291 int mem_cluster_cnt; 292 293 caddr_t allocsys __P((caddr_t)); 294 int cpu_dump __P((void)); 295 int cpu_dumpsize __P((void)); 296 u_long cpu_dump_mempagecnt __P((void)); 297 void dumpsys __P((void)); 298 void identifycpu __P((void)); 299 void netintr __P((void)); 300 void printregs __P((struct reg *)); 301 302 void 303 alpha_init(pfn, ptb, bim, bip, biv) 304 u_long pfn; /* first free PFN number */ 305 u_long ptb; /* PFN of current level 1 page table */ 306 u_long bim; /* bootinfo magic */ 307 u_long bip; /* bootinfo pointer */ 308 u_long biv; /* bootinfo version */ 309 { 310 extern char kernel_text[], _end[]; 311 struct mddt *mddtp; 312 struct mddt_cluster *memc; 313 int i, mddtweird; 314 struct vm_physseg *vps; 315 vaddr_t kernstart, kernend; 316 paddr_t kernstartpfn, kernendpfn, pfn0, pfn1; 317 vsize_t size; 318 char *p; 319 caddr_t v; 320 char *bootinfo_msg; 321 322 /* NO OUTPUT ALLOWED UNTIL FURTHER NOTICE */ 323 324 /* 325 * Turn off interrupts (not mchecks) and floating point. 326 * Make sure the instruction and data streams are consistent. 327 */ 328 (void)alpha_pal_swpipl(ALPHA_PSL_IPL_HIGH); 329 alpha_pal_wrfen(0); 330 ALPHA_TBIA(); 331 alpha_pal_imb(); 332 333 /* 334 * Get critical system information (if possible, from the 335 * information provided by the boot program). 336 */ 337 bootinfo_msg = NULL; 338 if (bim == BOOTINFO_MAGIC) { 339 if (biv == 0) { /* backward compat */ 340 biv = *(u_long *)bip; 341 bip += 8; 342 } 343 switch (biv) { 344 case 1: { 345 struct bootinfo_v1 *v1p = (struct bootinfo_v1 *)bip; 346 347 bootinfo.ssym = v1p->ssym; 348 bootinfo.esym = v1p->esym; 349 /* hwrpb may not be provided by boot block in v1 */ 350 if (v1p->hwrpb != NULL) { 351 bootinfo.hwrpb_phys = 352 ((struct rpb *)v1p->hwrpb)->rpb_phys; 353 bootinfo.hwrpb_size = v1p->hwrpbsize; 354 } else { 355 bootinfo.hwrpb_phys = 356 ((struct rpb *)HWRPB_ADDR)->rpb_phys; 357 bootinfo.hwrpb_size = 358 ((struct rpb *)HWRPB_ADDR)->rpb_size; 359 } 360 bcopy(v1p->boot_flags, bootinfo.boot_flags, 361 min(sizeof v1p->boot_flags, 362 sizeof bootinfo.boot_flags)); 363 bcopy(v1p->booted_kernel, bootinfo.booted_kernel, 364 min(sizeof v1p->booted_kernel, 365 sizeof bootinfo.booted_kernel)); 366 /* booted dev not provided in bootinfo */ 367 init_prom_interface((struct rpb *) 368 ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys)); 369 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 370 sizeof bootinfo.booted_dev); 371 break; 372 } 373 default: 374 bootinfo_msg = "unknown bootinfo version"; 375 goto nobootinfo; 376 } 377 } else { 378 bootinfo_msg = "boot program did not pass bootinfo"; 379 nobootinfo: 380 bootinfo.ssym = (u_long)_end; 381 bootinfo.esym = (u_long)_end; 382 bootinfo.hwrpb_phys = ((struct rpb *)HWRPB_ADDR)->rpb_phys; 383 bootinfo.hwrpb_size = ((struct rpb *)HWRPB_ADDR)->rpb_size; 384 init_prom_interface((struct rpb *)HWRPB_ADDR); 385 prom_getenv(PROM_E_BOOTED_OSFLAGS, bootinfo.boot_flags, 386 sizeof bootinfo.boot_flags); 387 prom_getenv(PROM_E_BOOTED_FILE, bootinfo.booted_kernel, 388 sizeof bootinfo.booted_kernel); 389 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 390 sizeof bootinfo.booted_dev); 391 } 392 393 /* 394 * Initialize the kernel's mapping of the RPB. It's needed for 395 * lots of things. 396 */ 397 hwrpb = (struct rpb *)ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys); 398 399 #if defined(DEC_3000_300) || defined(DEC_3000_500) 400 if (hwrpb->rpb_type == ST_DEC_3000_300 || 401 hwrpb->rpb_type == ST_DEC_3000_500) { 402 prom_getenv(PROM_E_SCSIID, dec_3000_scsiid, 403 sizeof(dec_3000_scsiid)); 404 prom_getenv(PROM_E_SCSIFAST, dec_3000_scsifast, 405 sizeof(dec_3000_scsifast)); 406 } 407 #endif 408 409 /* 410 * Remember how many cycles there are per microsecond, 411 * so that we can use delay(). Round up, for safety. 412 */ 413 cycles_per_usec = (hwrpb->rpb_cc_freq + 999999) / 1000000; 414 415 /* 416 * Initalize the (temporary) bootstrap console interface, so 417 * we can use printf until the VM system starts being setup. 418 * The real console is initialized before then. 419 */ 420 init_bootstrap_console(); 421 422 /* OUTPUT NOW ALLOWED */ 423 424 /* delayed from above */ 425 if (bootinfo_msg) 426 printf("WARNING: %s (0x%lx, 0x%lx, 0x%lx)\n", 427 bootinfo_msg, bim, bip, biv); 428 429 /* Initialize the trap vectors on the primary processor. */ 430 trap_init(); 431 432 /* 433 * Find out what hardware we're on, and do basic initialization. 434 */ 435 cputype = hwrpb->rpb_type; 436 if (cputype >= ncpuinit) { 437 platform_not_supported(); 438 /* NOTREACHED */ 439 } 440 (*cpuinit[cputype].init)(); 441 strcpy(cpu_model, platform.model); 442 443 /* 444 * Initalize the real console, so the the bootstrap console is 445 * no longer necessary. 446 */ 447 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 448 if (!pmap_uses_prom_console()) 449 #endif 450 (*platform.cons_init)(); 451 452 #ifdef DIAGNOSTIC 453 /* Paranoid sanity checking */ 454 455 /* We should always be running on the the primary. */ 456 assert(hwrpb->rpb_primary_cpu_id == alpha_pal_whami()); 457 458 /* 459 * On single-CPU systypes, the primary should always be CPU 0, 460 * except on Alpha 8200 systems where the CPU id is related 461 * to the VID, which is related to the Turbo Laser node id. 462 */ 463 if (cputype != ST_DEC_21000) 464 assert(hwrpb->rpb_primary_cpu_id == 0); 465 #endif 466 467 /* NO MORE FIRMWARE ACCESS ALLOWED */ 468 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 469 /* 470 * XXX (unless _PMAP_MAY_USE_PROM_CONSOLE is defined and 471 * XXX pmap_uses_prom_console() evaluates to non-zero.) 472 */ 473 #endif 474 475 /* 476 * find out this system's page size 477 */ 478 PAGE_SIZE = hwrpb->rpb_page_size; 479 if (PAGE_SIZE != 8192) 480 panic("page size %d != 8192?!", PAGE_SIZE); 481 482 /* 483 * Initialize PAGE_SIZE-dependent variables. 484 */ 485 #if defined(UVM) 486 uvm_setpagesize(); 487 #else 488 vm_set_page_size(); 489 #endif 490 491 /* 492 * Find the beginning and end of the kernel (and leave a 493 * bit of space before the beginning for the bootstrap 494 * stack). 495 */ 496 kernstart = trunc_page(kernel_text) - 2 * PAGE_SIZE; 497 #ifdef DDB 498 ksym_start = (void *)bootinfo.ssym; 499 ksym_end = (void *)bootinfo.esym; 500 kernend = (vaddr_t)round_page(ksym_end); 501 #else 502 kernend = (vaddr_t)round_page(_end); 503 #endif 504 505 kernstartpfn = atop(ALPHA_K0SEG_TO_PHYS(kernstart)); 506 kernendpfn = atop(ALPHA_K0SEG_TO_PHYS(kernend)); 507 508 /* 509 * Find out how much memory is available, by looking at 510 * the memory cluster descriptors. This also tries to do 511 * its best to detect things things that have never been seen 512 * before... 513 */ 514 mddtp = (struct mddt *)(((caddr_t)hwrpb) + hwrpb->rpb_memdat_off); 515 516 /* MDDT SANITY CHECKING */ 517 mddtweird = 0; 518 if (mddtp->mddt_cluster_cnt < 2) { 519 mddtweird = 1; 520 printf("WARNING: weird number of mem clusters: %lu\n", 521 mddtp->mddt_cluster_cnt); 522 } 523 524 #if 0 525 printf("Memory cluster count: %d\n", mddtp->mddt_cluster_cnt); 526 #endif 527 528 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 529 memc = &mddtp->mddt_clusters[i]; 530 #if 0 531 printf("MEMC %d: pfn 0x%lx cnt 0x%lx usage 0x%lx\n", i, 532 memc->mddt_pfn, memc->mddt_pg_cnt, memc->mddt_usage); 533 #endif 534 totalphysmem += memc->mddt_pg_cnt; 535 if (mem_cluster_cnt < VM_PHYSSEG_MAX) { /* XXX */ 536 mem_clusters[mem_cluster_cnt].start = 537 ptoa(memc->mddt_pfn); 538 mem_clusters[mem_cluster_cnt].size = 539 ptoa(memc->mddt_pg_cnt); 540 if (memc->mddt_usage & MDDT_mbz || 541 memc->mddt_usage & MDDT_NONVOLATILE || /* XXX */ 542 memc->mddt_usage & MDDT_PALCODE) 543 mem_clusters[mem_cluster_cnt].size |= 544 PROT_READ; 545 else 546 mem_clusters[mem_cluster_cnt].size |= 547 PROT_READ | PROT_WRITE | PROT_EXEC; 548 mem_cluster_cnt++; 549 } 550 551 if (memc->mddt_usage & MDDT_mbz) { 552 mddtweird = 1; 553 printf("WARNING: mem cluster %d has weird " 554 "usage 0x%lx\n", i, memc->mddt_usage); 555 unknownmem += memc->mddt_pg_cnt; 556 continue; 557 } 558 if (memc->mddt_usage & MDDT_NONVOLATILE) { 559 /* XXX should handle these... */ 560 printf("WARNING: skipping non-volatile mem " 561 "cluster %d\n", i); 562 unusedmem += memc->mddt_pg_cnt; 563 continue; 564 } 565 if (memc->mddt_usage & MDDT_PALCODE) { 566 resvmem += memc->mddt_pg_cnt; 567 continue; 568 } 569 570 /* 571 * We have a memory cluster available for system 572 * software use. We must determine if this cluster 573 * holds the kernel. 574 */ 575 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 576 /* 577 * XXX If the kernel uses the PROM console, we only use the 578 * XXX memory after the kernel in the first system segment, 579 * XXX to avoid clobbering prom mapping, data, etc. 580 */ 581 if (!pmap_uses_prom_console() || physmem == 0) { 582 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 583 physmem += memc->mddt_pg_cnt; 584 pfn0 = memc->mddt_pfn; 585 pfn1 = memc->mddt_pfn + memc->mddt_pg_cnt; 586 if (pfn0 <= kernstartpfn && kernendpfn <= pfn1) { 587 /* 588 * Must compute the location of the kernel 589 * within the segment. 590 */ 591 #if 0 592 printf("Cluster %d contains kernel\n", i); 593 #endif 594 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 595 if (!pmap_uses_prom_console()) { 596 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 597 if (pfn0 < kernstartpfn) { 598 /* 599 * There is a chunk before the kernel. 600 */ 601 #if 0 602 printf("Loading chunk before kernel: " 603 "0x%lx / 0x%lx\n", pfn0, kernstartpfn); 604 #endif 605 #if defined(UVM) 606 uvm_page_physload(pfn0, kernstartpfn, 607 pfn0, kernstartpfn, VM_FREELIST_DEFAULT); 608 #else 609 vm_page_physload(pfn0, kernstartpfn, 610 pfn0, kernstartpfn); 611 #endif 612 } 613 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 614 } 615 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 616 if (kernendpfn < pfn1) { 617 /* 618 * There is a chunk after the kernel. 619 */ 620 #if 0 621 printf("Loading chunk after kernel: " 622 "0x%lx / 0x%lx\n", kernendpfn, pfn1); 623 #endif 624 #if defined(UVM) 625 uvm_page_physload(kernendpfn, pfn1, 626 kernendpfn, pfn1, VM_FREELIST_DEFAULT); 627 #else 628 vm_page_physload(kernendpfn, pfn1, 629 kernendpfn, pfn1); 630 #endif 631 } 632 } else { 633 /* 634 * Just load this cluster as one chunk. 635 */ 636 #if 0 637 printf("Loading cluster %d: 0x%lx / 0x%lx\n", i, 638 pfn0, pfn1); 639 #endif 640 #if defined(UVM) 641 uvm_page_physload(pfn0, pfn1, pfn0, pfn1, 642 VM_FREELIST_DEFAULT); 643 #else 644 vm_page_physload(pfn0, pfn1, pfn0, pfn1); 645 #endif 646 } 647 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 648 } 649 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 650 } 651 652 /* 653 * Dump out the MDDT if it looks odd... 654 */ 655 if (mddtweird) { 656 printf("\n"); 657 printf("complete memory cluster information:\n"); 658 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 659 printf("mddt %d:\n", i); 660 printf("\tpfn %lx\n", 661 mddtp->mddt_clusters[i].mddt_pfn); 662 printf("\tcnt %lx\n", 663 mddtp->mddt_clusters[i].mddt_pg_cnt); 664 printf("\ttest %lx\n", 665 mddtp->mddt_clusters[i].mddt_pg_test); 666 printf("\tbva %lx\n", 667 mddtp->mddt_clusters[i].mddt_v_bitaddr); 668 printf("\tbpa %lx\n", 669 mddtp->mddt_clusters[i].mddt_p_bitaddr); 670 printf("\tbcksum %lx\n", 671 mddtp->mddt_clusters[i].mddt_bit_cksum); 672 printf("\tusage %lx\n", 673 mddtp->mddt_clusters[i].mddt_usage); 674 } 675 printf("\n"); 676 } 677 678 if (totalphysmem == 0) 679 panic("can't happen: system seems to have no memory!"); 680 681 #ifdef LIMITMEM 682 /* 683 * XXX Kludge so we can run on machines with memory larger 684 * XXX than 1G until all device drivers are converted to 685 * XXX use bus_dma. (Relies on the fact that vm_physmem 686 * XXX sorted in order of increasing addresses.) 687 */ 688 if (vm_physmem[vm_nphysseg - 1].end > atop(LIMITMEM * 1024 * 1024)) { 689 690 printf("******** LIMITING MEMORY TO %dMB **********\n", 691 LIMITMEM); 692 693 do { 694 u_long ovf; 695 696 vps = &vm_physmem[vm_nphysseg - 1]; 697 698 if (vps->start >= atop(LIMITMEM * 1024 * 1024)) { 699 /* 700 * If the start is too high, just drop 701 * the whole segment. 702 * 703 * XXX can start != avail_start in this 704 * XXX case? wouldn't that mean that 705 * XXX some memory was stolen above the 706 * XXX limit? What to do? 707 */ 708 ovf = vps->end - vps->start; 709 vm_nphysseg--; 710 } else { 711 /* 712 * If the start is OK, calculate how much 713 * to drop and drop it. 714 */ 715 ovf = vps->end - atop(LIMITMEM * 1024 * 1024); 716 vps->end -= ovf; 717 vps->avail_end -= ovf; 718 } 719 physmem -= ovf; 720 unusedmem += ovf; 721 } while (vps->end > atop(LIMITMEM * 1024 * 1024)); 722 } 723 #endif /* LIMITMEM */ 724 725 maxmem = physmem; 726 727 #if 0 728 printf("totalphysmem = %d\n", totalphysmem); 729 printf("physmem = %d\n", physmem); 730 printf("resvmem = %d\n", resvmem); 731 printf("unusedmem = %d\n", unusedmem); 732 printf("unknownmem = %d\n", unknownmem); 733 #endif 734 735 /* 736 * Adjust some parameters if the amount of physmem 737 * available would cause us to croak. This is completely 738 * eyeballed and isn't meant to be the final answer. 739 * vm_phys_size is probably the only one to really worry 740 * about. 741 * 742 * It's for booting a GENERIC kernel on a large memory platform. 743 */ 744 if (physmem >= atop(128 * 1024 * 1024)) { 745 vm_mbuf_size <<= 1; 746 vm_kmem_size <<= 3; 747 vm_phys_size <<= 2; 748 } 749 750 /* 751 * Initialize error message buffer (at end of core). 752 */ 753 { 754 size_t sz = round_page(MSGBUFSIZE); 755 756 vps = &vm_physmem[vm_nphysseg - 1]; 757 758 /* shrink so that it'll fit in the last segment */ 759 if ((vps->avail_end - vps->avail_start) < atop(sz)) 760 sz = ptoa(vps->avail_end - vps->avail_start); 761 762 vps->end -= atop(sz); 763 vps->avail_end -= atop(sz); 764 msgbufaddr = (caddr_t) ALPHA_PHYS_TO_K0SEG(ptoa(vps->end)); 765 initmsgbuf(msgbufaddr, sz); 766 767 /* Remove the last segment if it now has no pages. */ 768 if (vps->start == vps->end) 769 vm_nphysseg--; 770 771 /* warn if the message buffer had to be shrunk */ 772 if (sz != round_page(MSGBUFSIZE)) 773 printf("WARNING: %ld bytes not available for msgbuf in last cluster (%ld used)\n", 774 round_page(MSGBUFSIZE), sz); 775 776 } 777 778 /* 779 * Init mapping for u page(s) for proc 0 780 */ 781 proc0.p_addr = proc0paddr = 782 (struct user *)pmap_steal_memory(UPAGES * PAGE_SIZE, NULL, NULL); 783 784 /* 785 * Allocate space for system data structures. These data structures 786 * are allocated here instead of cpu_startup() because physical 787 * memory is directly addressable. We don't have to map these into 788 * virtual address space. 789 */ 790 size = (vsize_t)allocsys(0); 791 v = (caddr_t)pmap_steal_memory(size, NULL, NULL); 792 if ((allocsys(v) - v) != size) 793 panic("alpha_init: table size inconsistency"); 794 795 /* 796 * Initialize the virtual memory system, and set the 797 * page table base register in proc 0's PCB. 798 */ 799 pmap_bootstrap(ALPHA_PHYS_TO_K0SEG(ptb << PGSHIFT), 800 hwrpb->rpb_max_asn, hwrpb->rpb_pcs_cnt); 801 802 /* 803 * Initialize the rest of proc 0's PCB, and cache its physical 804 * address. 805 */ 806 proc0.p_md.md_pcbpaddr = 807 (struct pcb *)ALPHA_K0SEG_TO_PHYS((vaddr_t)&proc0paddr->u_pcb); 808 809 /* 810 * Set the kernel sp, reserving space for an (empty) trapframe, 811 * and make proc0's trapframe pointer point to it for sanity. 812 */ 813 proc0paddr->u_pcb.pcb_hw.apcb_ksp = 814 (u_int64_t)proc0paddr + USPACE - sizeof(struct trapframe); 815 proc0.p_md.md_tf = 816 (struct trapframe *)proc0paddr->u_pcb.pcb_hw.apcb_ksp; 817 818 /* 819 * Look at arguments passed to us and compute boothowto. 820 */ 821 822 boothowto = RB_SINGLE; 823 #ifdef KADB 824 boothowto |= RB_KDB; 825 #endif 826 for (p = bootinfo.boot_flags; p && *p != '\0'; p++) { 827 /* 828 * Note that we'd really like to differentiate case here, 829 * but the Alpha AXP Architecture Reference Manual 830 * says that we shouldn't. 831 */ 832 switch (*p) { 833 case 'a': /* autoboot */ 834 case 'A': 835 boothowto &= ~RB_SINGLE; 836 break; 837 838 #ifdef DEBUG 839 case 'c': /* crash dump immediately after autoconfig */ 840 case 'C': 841 boothowto |= RB_DUMP; 842 break; 843 #endif 844 845 #if defined(KGDB) || defined(DDB) 846 case 'd': /* break into the kernel debugger ASAP */ 847 case 'D': 848 boothowto |= RB_KDB; 849 break; 850 #endif 851 852 case 'h': /* always halt, never reboot */ 853 case 'H': 854 boothowto |= RB_HALT; 855 break; 856 857 #if 0 858 case 'm': /* mini root present in memory */ 859 case 'M': 860 boothowto |= RB_MINIROOT; 861 break; 862 #endif 863 864 case 'n': /* askname */ 865 case 'N': 866 boothowto |= RB_ASKNAME; 867 break; 868 869 case 's': /* single-user (default, supported for sanity) */ 870 case 'S': 871 boothowto |= RB_SINGLE; 872 break; 873 874 case '-': 875 /* 876 * Just ignore this. It's not required, but it's 877 * common for it to be passed regardless. 878 */ 879 break; 880 881 default: 882 printf("Unrecognized boot flag '%c'.\n", *p); 883 break; 884 } 885 } 886 887 888 /* 889 * Figure out the number of cpus in the box, from RPB fields. 890 * Really. We mean it. 891 */ 892 for (i = 0; i < hwrpb->rpb_pcs_cnt; i++) { 893 struct pcs *pcsp; 894 895 pcsp = LOCATE_PCS(hwrpb, i); 896 if ((pcsp->pcs_flags & PCS_PP) != 0) 897 ncpus++; 898 } 899 900 /* 901 * Initialize debuggers, and break into them if appropriate. 902 */ 903 #ifdef DDB 904 db_machine_init(); 905 ddb_init((int)((u_int64_t)ksym_end - (u_int64_t)ksym_start), 906 ksym_start, ksym_end); 907 if (boothowto & RB_KDB) 908 Debugger(); 909 #endif 910 #ifdef KGDB 911 if (boothowto & RB_KDB) 912 kgdb_connect(0); 913 #endif 914 /* 915 * Figure out our clock frequency, from RPB fields. 916 */ 917 hz = hwrpb->rpb_intr_freq >> 12; 918 if (!(60 <= hz && hz <= 10240)) { 919 hz = 1024; 920 #ifdef DIAGNOSTIC 921 printf("WARNING: unbelievable rpb_intr_freq: %ld (%d hz)\n", 922 hwrpb->rpb_intr_freq, hz); 923 #endif 924 } 925 } 926 927 /* 928 * Allocate space for system data structures. We are given 929 * a starting virtual address and we return a final virtual 930 * address; along the way we set each data structure pointer. 931 * 932 * We call allocsys() with 0 to find out how much space we want, 933 * allocate that much and fill it with zeroes, and the call 934 * allocsys() again with the correct base virtual address. 935 */ 936 caddr_t 937 allocsys(v) 938 caddr_t v; 939 { 940 941 #define valloc(name, type, num) \ 942 (name) = (type *)v; v = (caddr_t)ALIGN((name)+(num)) 943 944 #ifdef REAL_CLISTS 945 valloc(cfree, struct cblock, nclist); 946 #endif 947 valloc(callout, struct callout, ncallout); 948 #ifdef SYSVSHM 949 valloc(shmsegs, struct shmid_ds, shminfo.shmmni); 950 #endif 951 #ifdef SYSVSEM 952 valloc(sema, struct semid_ds, seminfo.semmni); 953 valloc(sem, struct sem, seminfo.semmns); 954 /* This is pretty disgusting! */ 955 valloc(semu, int, (seminfo.semmnu * seminfo.semusz) / sizeof(int)); 956 #endif 957 #ifdef SYSVMSG 958 valloc(msgpool, char, msginfo.msgmax); 959 valloc(msgmaps, struct msgmap, msginfo.msgseg); 960 valloc(msghdrs, struct msg, msginfo.msgtql); 961 valloc(msqids, struct msqid_ds, msginfo.msgmni); 962 #endif 963 964 /* 965 * Determine how many buffers to allocate. 966 * We allocate bufcache % of memory for buffer space. Insure a 967 * minimum of 16 buffers. We allocate 1/2 as many swap buffer 968 * headers as file i/o buffers. 969 */ 970 if (bufpages == 0) 971 bufpages = physmem / CLSIZE * bufcache / 100; 972 if (nbuf == 0) { 973 nbuf = bufpages; 974 if (nbuf < 16) 975 nbuf = 16; 976 } 977 if (nswbuf == 0) { 978 nswbuf = (nbuf / 2) &~ 1; /* force even */ 979 if (nswbuf > 256) 980 nswbuf = 256; /* sanity */ 981 } 982 #if !defined(UVM) 983 valloc(swbuf, struct buf, nswbuf); 984 #endif 985 valloc(buf, struct buf, nbuf); 986 987 /* 988 * There appears to be a correlation between the number 989 * of processor slots defined in the HWRPB and the whami 990 * value that can be returned. 991 */ 992 valloc(mchkinfo_all_cpus, struct mchkinfo, hwrpb->rpb_pcs_cnt); 993 994 return (v); 995 #undef valloc 996 } 997 998 void 999 consinit() 1000 { 1001 1002 /* 1003 * Everything related to console initialization is done 1004 * in alpha_init(). 1005 */ 1006 #if defined(DIAGNOSTIC) && defined(_PMAP_MAY_USE_PROM_CONSOLE) 1007 printf("consinit: %susing prom console\n", 1008 pmap_uses_prom_console() ? "" : "not "); 1009 #endif 1010 } 1011 1012 #include "pckbc.h" 1013 #include "pckbd.h" 1014 #if (NPCKBC > 0) && (NPCKBD == 0) 1015 1016 #include <dev/isa/pckbcvar.h> 1017 1018 /* 1019 * This is called by the pbkbc driver if no pckbd is configured. 1020 * On the i386, it is used to glue in the old, deprecated console 1021 * code. On the Alpha, it does nothing. 1022 */ 1023 int 1024 pckbc_machdep_cnattach(kbctag, kbcslot) 1025 pckbc_tag_t kbctag; 1026 pckbc_slot_t kbcslot; 1027 { 1028 1029 return (ENXIO); 1030 } 1031 #endif /* NPCKBC > 0 && NPCKBD == 0 */ 1032 1033 void 1034 cpu_startup() 1035 { 1036 register unsigned i; 1037 int base, residual; 1038 vaddr_t minaddr, maxaddr; 1039 vsize_t size; 1040 #if defined(DEBUG) 1041 extern int pmapdebug; 1042 int opmapdebug = pmapdebug; 1043 1044 pmapdebug = 0; 1045 #endif 1046 1047 /* 1048 * Good {morning,afternoon,evening,night}. 1049 */ 1050 printf(version); 1051 identifycpu(); 1052 printf("real mem = %lu (%lu reserved for PROM, %lu used by NetBSD)\n", 1053 ((psize_t) totalphysmem << (psize_t) PAGE_SHIFT), 1054 ptoa(resvmem), ptoa(physmem)); 1055 if (unusedmem) 1056 printf("WARNING: unused memory = %d bytes\n", ctob(unusedmem)); 1057 if (unknownmem) 1058 printf("WARNING: %d bytes of memory with unknown purpose\n", 1059 ctob(unknownmem)); 1060 1061 /* 1062 * Allocate virtual address space for file I/O buffers. 1063 * Note they are different than the array of headers, 'buf', 1064 * and usually occupy more virtual memory than physical. 1065 */ 1066 size = MAXBSIZE * nbuf; 1067 #if defined(UVM) 1068 if (uvm_map(kernel_map, (vaddr_t *) &buffers, round_page(size), 1069 NULL, UVM_UNKNOWN_OFFSET, 1070 UVM_MAPFLAG(UVM_PROT_NONE, UVM_PROT_NONE, UVM_INH_NONE, 1071 UVM_ADV_NORMAL, 0)) != KERN_SUCCESS) 1072 panic("startup: cannot allocate VM for buffers"); 1073 #else 1074 buffer_map = kmem_suballoc(kernel_map, (vaddr_t *)&buffers, 1075 &maxaddr, size, TRUE); 1076 minaddr = (vaddr_t)buffers; 1077 if (vm_map_find(buffer_map, vm_object_allocate(size), (vaddr_t)0, 1078 &minaddr, size, FALSE) != KERN_SUCCESS) 1079 panic("startup: cannot allocate buffers"); 1080 #endif /* UVM */ 1081 base = bufpages / nbuf; 1082 residual = bufpages % nbuf; 1083 for (i = 0; i < nbuf; i++) { 1084 #if defined(UVM) 1085 vsize_t curbufsize; 1086 vaddr_t curbuf; 1087 struct vm_page *pg; 1088 1089 /* 1090 * Each buffer has MAXBSIZE bytes of VM space allocated. Of 1091 * that MAXBSIZE space, we allocate and map (base+1) pages 1092 * for the first "residual" buffers, and then we allocate 1093 * "base" pages for the rest. 1094 */ 1095 curbuf = (vaddr_t) buffers + (i * MAXBSIZE); 1096 curbufsize = CLBYTES * ((i < residual) ? (base+1) : base); 1097 1098 while (curbufsize) { 1099 pg = uvm_pagealloc(NULL, 0, NULL); 1100 if (pg == NULL) 1101 panic("cpu_startup: not enough memory for " 1102 "buffer cache"); 1103 #if defined(PMAP_NEW) 1104 pmap_kenter_pgs(curbuf, &pg, 1); 1105 #else 1106 pmap_enter(kernel_map->pmap, curbuf, 1107 VM_PAGE_TO_PHYS(pg), VM_PROT_ALL, TRUE); 1108 #endif 1109 curbuf += PAGE_SIZE; 1110 curbufsize -= PAGE_SIZE; 1111 } 1112 #else /* ! UVM */ 1113 vsize_t curbufsize; 1114 vaddr_t curbuf; 1115 1116 /* 1117 * First <residual> buffers get (base+1) physical pages 1118 * allocated for them. The rest get (base) physical pages. 1119 * 1120 * The rest of each buffer occupies virtual space, 1121 * but has no physical memory allocated for it. 1122 */ 1123 curbuf = (vaddr_t)buffers + i * MAXBSIZE; 1124 curbufsize = CLBYTES * (i < residual ? base+1 : base); 1125 vm_map_pageable(buffer_map, curbuf, curbuf+curbufsize, FALSE); 1126 vm_map_simplify(buffer_map, curbuf); 1127 #endif /* UVM */ 1128 } 1129 /* 1130 * Allocate a submap for exec arguments. This map effectively 1131 * limits the number of processes exec'ing at any time. 1132 */ 1133 #if defined(UVM) 1134 exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 1135 16 * NCARGS, TRUE, FALSE, NULL); 1136 #else 1137 exec_map = kmem_suballoc(kernel_map, &minaddr, &maxaddr, 1138 16 * NCARGS, TRUE); 1139 #endif 1140 1141 /* 1142 * Allocate a submap for physio 1143 */ 1144 #if defined(UVM) 1145 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 1146 VM_PHYS_SIZE, TRUE, FALSE, NULL); 1147 #else 1148 phys_map = kmem_suballoc(kernel_map, &minaddr, &maxaddr, 1149 VM_PHYS_SIZE, TRUE); 1150 #endif 1151 1152 /* 1153 * Finally, allocate mbuf cluster submap. 1154 */ 1155 #if defined(UVM) 1156 mb_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 1157 VM_MBUF_SIZE, FALSE, FALSE, NULL); 1158 #else 1159 mb_map = kmem_suballoc(kernel_map, &minaddr, &maxaddr, 1160 VM_MBUF_SIZE, FALSE); 1161 #endif 1162 /* 1163 * Initialize callouts 1164 */ 1165 callfree = callout; 1166 for (i = 1; i < ncallout; i++) 1167 callout[i-1].c_next = &callout[i]; 1168 callout[i-1].c_next = NULL; 1169 1170 #if defined(DEBUG) 1171 pmapdebug = opmapdebug; 1172 #endif 1173 #if defined(UVM) 1174 printf("avail mem = %ld\n", (long)ptoa(uvmexp.free)); 1175 #else 1176 printf("avail mem = %ld\n", (long)ptoa(cnt.v_free_count)); 1177 #endif 1178 #if 0 1179 { 1180 extern u_long pmap_pages_stolen; 1181 printf("stolen memory for VM structures = %ld bytes\n", 1182 pmap_pages_stolen * PAGE_SIZE); 1183 } 1184 #endif 1185 printf("using %ld buffers containing %ld bytes of memory\n", 1186 (long)nbuf, (long)(bufpages * CLBYTES)); 1187 1188 /* 1189 * Set up buffers, so they can be used to read disk labels. 1190 */ 1191 bufinit(); 1192 1193 /* 1194 * Set up the HWPCB so that it's safe to configure secondary 1195 * CPUs. 1196 */ 1197 hwrpb_primary_init(); 1198 1199 /* 1200 * Configure the system. 1201 */ 1202 configure(); 1203 } 1204 1205 /* 1206 * Retrieve the platform name from the DSR. 1207 */ 1208 const char * 1209 alpha_dsr_sysname() 1210 { 1211 struct dsrdb *dsr; 1212 const char *sysname; 1213 1214 /* 1215 * DSR does not exist on early HWRPB versions. 1216 */ 1217 if (hwrpb->rpb_version < HWRPB_DSRDB_MINVERS) 1218 return (NULL); 1219 1220 dsr = (struct dsrdb *)(((caddr_t)hwrpb) + hwrpb->rpb_dsrdb_off); 1221 sysname = (const char *)((caddr_t)dsr + (dsr->dsr_sysname_off + 1222 sizeof(u_int64_t))); 1223 return (sysname); 1224 } 1225 1226 /* 1227 * Lookup the system specified system variation in the provided table, 1228 * returning the model string on match. 1229 */ 1230 const char * 1231 alpha_variation_name(variation, avtp) 1232 u_int64_t variation; 1233 const struct alpha_variation_table *avtp; 1234 { 1235 int i; 1236 1237 for (i = 0; avtp[i].avt_model != NULL; i++) 1238 if (avtp[i].avt_variation == variation) 1239 return (avtp[i].avt_model); 1240 return (NULL); 1241 } 1242 1243 /* 1244 * Generate a default platform name based for unknown system variations. 1245 */ 1246 const char * 1247 alpha_unknown_sysname() 1248 { 1249 static char s[128]; /* safe size */ 1250 1251 sprintf(s, "%s family, unknown model variation 0x%lx", 1252 platform.family, hwrpb->rpb_variation & SV_ST_MASK); 1253 return ((const char *)s); 1254 } 1255 1256 void 1257 identifycpu() 1258 { 1259 1260 /* 1261 * print out CPU identification information. 1262 */ 1263 printf("%s, %ldMHz\n", cpu_model, 1264 hwrpb->rpb_cc_freq / 1000000); /* XXX true for 21164? */ 1265 printf("%ld byte page size, %d processor%s.\n", 1266 hwrpb->rpb_page_size, ncpus, ncpus == 1 ? "" : "s"); 1267 #if 0 1268 /* this isn't defined for any systems that we run on? */ 1269 printf("serial number 0x%lx 0x%lx\n", 1270 ((long *)hwrpb->rpb_ssn)[0], ((long *)hwrpb->rpb_ssn)[1]); 1271 1272 /* and these aren't particularly useful! */ 1273 printf("variation: 0x%lx, revision 0x%lx\n", 1274 hwrpb->rpb_variation, *(long *)hwrpb->rpb_revision); 1275 #endif 1276 } 1277 1278 int waittime = -1; 1279 struct pcb dumppcb; 1280 1281 void 1282 cpu_reboot(howto, bootstr) 1283 int howto; 1284 char *bootstr; 1285 { 1286 extern int cold; 1287 #if defined(MULTIPROCESSOR) 1288 #if 0 /* XXX See below. */ 1289 u_long cpu_id; 1290 #endif 1291 #endif 1292 1293 #if defined(MULTIPROCESSOR) 1294 /* We must be running on the primary CPU. */ 1295 if (alpha_pal_whami() != hwrpb->rpb_primary_cpu_id) 1296 panic("cpu_reboot: not on primary CPU!"); 1297 #endif 1298 1299 /* If system is cold, just halt. */ 1300 if (cold) { 1301 howto |= RB_HALT; 1302 goto haltsys; 1303 } 1304 1305 /* If "always halt" was specified as a boot flag, obey. */ 1306 if ((boothowto & RB_HALT) != 0) 1307 howto |= RB_HALT; 1308 1309 boothowto = howto; 1310 if ((howto & RB_NOSYNC) == 0 && waittime < 0) { 1311 waittime = 0; 1312 vfs_shutdown(); 1313 /* 1314 * If we've been adjusting the clock, the todr 1315 * will be out of synch; adjust it now. 1316 */ 1317 resettodr(); 1318 } 1319 1320 /* Disable interrupts. */ 1321 splhigh(); 1322 1323 /* If rebooting and a dump is requested do it. */ 1324 #if 0 1325 if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP) 1326 #else 1327 if (howto & RB_DUMP) 1328 #endif 1329 dumpsys(); 1330 1331 haltsys: 1332 1333 /* run any shutdown hooks */ 1334 doshutdownhooks(); 1335 1336 #if defined(MULTIPROCESSOR) 1337 #if 0 /* XXX doesn't work when called from here?! */ 1338 /* Kill off any secondary CPUs. */ 1339 for (cpu_id = 0; cpu_id < hwrpb->rpb_pcs_cnt; cpu_id++) { 1340 if (cpu_id == hwrpb->rpb_primary_cpu_id || 1341 cpu_info[cpu_id].ci_softc == NULL) 1342 continue; 1343 cpu_halt_secondary(cpu_id); 1344 } 1345 #endif 1346 #endif 1347 1348 #ifdef BOOTKEY 1349 printf("hit any key to %s...\n", howto & RB_HALT ? "halt" : "reboot"); 1350 cnpollc(1); /* for proper keyboard command handling */ 1351 cngetc(); 1352 cnpollc(0); 1353 printf("\n"); 1354 #endif 1355 1356 /* Finally, powerdown/halt/reboot the system. */ 1357 if ((howto && RB_POWERDOWN) == RB_POWERDOWN && 1358 platform.powerdown != NULL) { 1359 (*platform.powerdown)(); 1360 printf("WARNING: powerdown failed!\n"); 1361 } 1362 printf("%s\n\n", howto & RB_HALT ? "halted." : "rebooting..."); 1363 prom_halt(howto & RB_HALT); 1364 /*NOTREACHED*/ 1365 } 1366 1367 /* 1368 * These variables are needed by /sbin/savecore 1369 */ 1370 u_long dumpmag = 0x8fca0101; /* magic number */ 1371 int dumpsize = 0; /* pages */ 1372 long dumplo = 0; /* blocks */ 1373 1374 /* 1375 * cpu_dumpsize: calculate size of machine-dependent kernel core dump headers. 1376 */ 1377 int 1378 cpu_dumpsize() 1379 { 1380 int size; 1381 1382 size = ALIGN(sizeof(kcore_seg_t)) + ALIGN(sizeof(cpu_kcore_hdr_t)) + 1383 ALIGN(mem_cluster_cnt * sizeof(phys_ram_seg_t)); 1384 if (roundup(size, dbtob(1)) != dbtob(1)) 1385 return -1; 1386 1387 return (1); 1388 } 1389 1390 /* 1391 * cpu_dump_mempagecnt: calculate size of RAM (in pages) to be dumped. 1392 */ 1393 u_long 1394 cpu_dump_mempagecnt() 1395 { 1396 u_long i, n; 1397 1398 n = 0; 1399 for (i = 0; i < mem_cluster_cnt; i++) 1400 n += atop(mem_clusters[i].size); 1401 return (n); 1402 } 1403 1404 /* 1405 * cpu_dump: dump machine-dependent kernel core dump headers. 1406 */ 1407 int 1408 cpu_dump() 1409 { 1410 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1411 char buf[dbtob(1)]; 1412 kcore_seg_t *segp; 1413 cpu_kcore_hdr_t *cpuhdrp; 1414 phys_ram_seg_t *memsegp; 1415 int i; 1416 1417 dump = bdevsw[major(dumpdev)].d_dump; 1418 1419 bzero(buf, sizeof buf); 1420 segp = (kcore_seg_t *)buf; 1421 cpuhdrp = (cpu_kcore_hdr_t *)&buf[ALIGN(sizeof(*segp))]; 1422 memsegp = (phys_ram_seg_t *)&buf[ ALIGN(sizeof(*segp)) + 1423 ALIGN(sizeof(*cpuhdrp))]; 1424 1425 /* 1426 * Generate a segment header. 1427 */ 1428 CORE_SETMAGIC(*segp, KCORE_MAGIC, MID_MACHINE, CORE_CPU); 1429 segp->c_size = dbtob(1) - ALIGN(sizeof(*segp)); 1430 1431 /* 1432 * Add the machine-dependent header info. 1433 */ 1434 cpuhdrp->lev1map_pa = ALPHA_K0SEG_TO_PHYS((vaddr_t)kernel_lev1map); 1435 cpuhdrp->page_size = PAGE_SIZE; 1436 cpuhdrp->nmemsegs = mem_cluster_cnt; 1437 1438 /* 1439 * Fill in the memory segment descriptors. 1440 */ 1441 for (i = 0; i < mem_cluster_cnt; i++) { 1442 memsegp[i].start = mem_clusters[i].start; 1443 memsegp[i].size = mem_clusters[i].size & ~PAGE_MASK; 1444 } 1445 1446 return (dump(dumpdev, dumplo, (caddr_t)buf, dbtob(1))); 1447 } 1448 1449 /* 1450 * This is called by main to set dumplo and dumpsize. 1451 * Dumps always skip the first CLBYTES of disk space 1452 * in case there might be a disk label stored there. 1453 * If there is extra space, put dump at the end to 1454 * reduce the chance that swapping trashes it. 1455 */ 1456 void 1457 cpu_dumpconf() 1458 { 1459 int nblks, dumpblks; /* size of dump area */ 1460 int maj; 1461 1462 if (dumpdev == NODEV) 1463 goto bad; 1464 maj = major(dumpdev); 1465 if (maj < 0 || maj >= nblkdev) 1466 panic("dumpconf: bad dumpdev=0x%x", dumpdev); 1467 if (bdevsw[maj].d_psize == NULL) 1468 goto bad; 1469 nblks = (*bdevsw[maj].d_psize)(dumpdev); 1470 if (nblks <= ctod(1)) 1471 goto bad; 1472 1473 dumpblks = cpu_dumpsize(); 1474 if (dumpblks < 0) 1475 goto bad; 1476 dumpblks += ctod(cpu_dump_mempagecnt()); 1477 1478 /* If dump won't fit (incl. room for possible label), punt. */ 1479 if (dumpblks > (nblks - ctod(1))) 1480 goto bad; 1481 1482 /* Put dump at end of partition */ 1483 dumplo = nblks - dumpblks; 1484 1485 /* dumpsize is in page units, and doesn't include headers. */ 1486 dumpsize = cpu_dump_mempagecnt(); 1487 return; 1488 1489 bad: 1490 dumpsize = 0; 1491 return; 1492 } 1493 1494 /* 1495 * Dump the kernel's image to the swap partition. 1496 */ 1497 #define BYTES_PER_DUMP NBPG 1498 1499 void 1500 dumpsys() 1501 { 1502 u_long totalbytesleft, bytes, i, n, memcl; 1503 u_long maddr; 1504 int psize; 1505 daddr_t blkno; 1506 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1507 int error; 1508 1509 /* Save registers. */ 1510 savectx(&dumppcb); 1511 1512 msgbufenabled = 0; /* don't record dump msgs in msgbuf */ 1513 if (dumpdev == NODEV) 1514 return; 1515 1516 /* 1517 * For dumps during autoconfiguration, 1518 * if dump device has already configured... 1519 */ 1520 if (dumpsize == 0) 1521 cpu_dumpconf(); 1522 if (dumplo <= 0) { 1523 printf("\ndump to dev %u,%u not possible\n", major(dumpdev), 1524 minor(dumpdev)); 1525 return; 1526 } 1527 printf("\ndumping to dev %u,%u offset %ld\n", major(dumpdev), 1528 minor(dumpdev), dumplo); 1529 1530 psize = (*bdevsw[major(dumpdev)].d_psize)(dumpdev); 1531 printf("dump "); 1532 if (psize == -1) { 1533 printf("area unavailable\n"); 1534 return; 1535 } 1536 1537 /* XXX should purge all outstanding keystrokes. */ 1538 1539 if ((error = cpu_dump()) != 0) 1540 goto err; 1541 1542 totalbytesleft = ptoa(cpu_dump_mempagecnt()); 1543 blkno = dumplo + cpu_dumpsize(); 1544 dump = bdevsw[major(dumpdev)].d_dump; 1545 error = 0; 1546 1547 for (memcl = 0; memcl < mem_cluster_cnt; memcl++) { 1548 maddr = mem_clusters[memcl].start; 1549 bytes = mem_clusters[memcl].size & ~PAGE_MASK; 1550 1551 for (i = 0; i < bytes; i += n, totalbytesleft -= n) { 1552 1553 /* Print out how many MBs we to go. */ 1554 if ((totalbytesleft % (1024*1024)) == 0) 1555 printf("%ld ", totalbytesleft / (1024 * 1024)); 1556 1557 /* Limit size for next transfer. */ 1558 n = bytes - i; 1559 if (n > BYTES_PER_DUMP) 1560 n = BYTES_PER_DUMP; 1561 1562 error = (*dump)(dumpdev, blkno, 1563 (caddr_t)ALPHA_PHYS_TO_K0SEG(maddr), n); 1564 if (error) 1565 goto err; 1566 maddr += n; 1567 blkno += btodb(n); /* XXX? */ 1568 1569 /* XXX should look for keystrokes, to cancel. */ 1570 } 1571 } 1572 1573 err: 1574 switch (error) { 1575 1576 case ENXIO: 1577 printf("device bad\n"); 1578 break; 1579 1580 case EFAULT: 1581 printf("device not ready\n"); 1582 break; 1583 1584 case EINVAL: 1585 printf("area improper\n"); 1586 break; 1587 1588 case EIO: 1589 printf("i/o error\n"); 1590 break; 1591 1592 case EINTR: 1593 printf("aborted from console\n"); 1594 break; 1595 1596 case 0: 1597 printf("succeeded\n"); 1598 break; 1599 1600 default: 1601 printf("error %d\n", error); 1602 break; 1603 } 1604 printf("\n\n"); 1605 delay(1000); 1606 } 1607 1608 void 1609 frametoreg(framep, regp) 1610 struct trapframe *framep; 1611 struct reg *regp; 1612 { 1613 1614 regp->r_regs[R_V0] = framep->tf_regs[FRAME_V0]; 1615 regp->r_regs[R_T0] = framep->tf_regs[FRAME_T0]; 1616 regp->r_regs[R_T1] = framep->tf_regs[FRAME_T1]; 1617 regp->r_regs[R_T2] = framep->tf_regs[FRAME_T2]; 1618 regp->r_regs[R_T3] = framep->tf_regs[FRAME_T3]; 1619 regp->r_regs[R_T4] = framep->tf_regs[FRAME_T4]; 1620 regp->r_regs[R_T5] = framep->tf_regs[FRAME_T5]; 1621 regp->r_regs[R_T6] = framep->tf_regs[FRAME_T6]; 1622 regp->r_regs[R_T7] = framep->tf_regs[FRAME_T7]; 1623 regp->r_regs[R_S0] = framep->tf_regs[FRAME_S0]; 1624 regp->r_regs[R_S1] = framep->tf_regs[FRAME_S1]; 1625 regp->r_regs[R_S2] = framep->tf_regs[FRAME_S2]; 1626 regp->r_regs[R_S3] = framep->tf_regs[FRAME_S3]; 1627 regp->r_regs[R_S4] = framep->tf_regs[FRAME_S4]; 1628 regp->r_regs[R_S5] = framep->tf_regs[FRAME_S5]; 1629 regp->r_regs[R_S6] = framep->tf_regs[FRAME_S6]; 1630 regp->r_regs[R_A0] = framep->tf_regs[FRAME_A0]; 1631 regp->r_regs[R_A1] = framep->tf_regs[FRAME_A1]; 1632 regp->r_regs[R_A2] = framep->tf_regs[FRAME_A2]; 1633 regp->r_regs[R_A3] = framep->tf_regs[FRAME_A3]; 1634 regp->r_regs[R_A4] = framep->tf_regs[FRAME_A4]; 1635 regp->r_regs[R_A5] = framep->tf_regs[FRAME_A5]; 1636 regp->r_regs[R_T8] = framep->tf_regs[FRAME_T8]; 1637 regp->r_regs[R_T9] = framep->tf_regs[FRAME_T9]; 1638 regp->r_regs[R_T10] = framep->tf_regs[FRAME_T10]; 1639 regp->r_regs[R_T11] = framep->tf_regs[FRAME_T11]; 1640 regp->r_regs[R_RA] = framep->tf_regs[FRAME_RA]; 1641 regp->r_regs[R_T12] = framep->tf_regs[FRAME_T12]; 1642 regp->r_regs[R_AT] = framep->tf_regs[FRAME_AT]; 1643 regp->r_regs[R_GP] = framep->tf_regs[FRAME_GP]; 1644 /* regp->r_regs[R_SP] = framep->tf_regs[FRAME_SP]; XXX */ 1645 regp->r_regs[R_ZERO] = 0; 1646 } 1647 1648 void 1649 regtoframe(regp, framep) 1650 struct reg *regp; 1651 struct trapframe *framep; 1652 { 1653 1654 framep->tf_regs[FRAME_V0] = regp->r_regs[R_V0]; 1655 framep->tf_regs[FRAME_T0] = regp->r_regs[R_T0]; 1656 framep->tf_regs[FRAME_T1] = regp->r_regs[R_T1]; 1657 framep->tf_regs[FRAME_T2] = regp->r_regs[R_T2]; 1658 framep->tf_regs[FRAME_T3] = regp->r_regs[R_T3]; 1659 framep->tf_regs[FRAME_T4] = regp->r_regs[R_T4]; 1660 framep->tf_regs[FRAME_T5] = regp->r_regs[R_T5]; 1661 framep->tf_regs[FRAME_T6] = regp->r_regs[R_T6]; 1662 framep->tf_regs[FRAME_T7] = regp->r_regs[R_T7]; 1663 framep->tf_regs[FRAME_S0] = regp->r_regs[R_S0]; 1664 framep->tf_regs[FRAME_S1] = regp->r_regs[R_S1]; 1665 framep->tf_regs[FRAME_S2] = regp->r_regs[R_S2]; 1666 framep->tf_regs[FRAME_S3] = regp->r_regs[R_S3]; 1667 framep->tf_regs[FRAME_S4] = regp->r_regs[R_S4]; 1668 framep->tf_regs[FRAME_S5] = regp->r_regs[R_S5]; 1669 framep->tf_regs[FRAME_S6] = regp->r_regs[R_S6]; 1670 framep->tf_regs[FRAME_A0] = regp->r_regs[R_A0]; 1671 framep->tf_regs[FRAME_A1] = regp->r_regs[R_A1]; 1672 framep->tf_regs[FRAME_A2] = regp->r_regs[R_A2]; 1673 framep->tf_regs[FRAME_A3] = regp->r_regs[R_A3]; 1674 framep->tf_regs[FRAME_A4] = regp->r_regs[R_A4]; 1675 framep->tf_regs[FRAME_A5] = regp->r_regs[R_A5]; 1676 framep->tf_regs[FRAME_T8] = regp->r_regs[R_T8]; 1677 framep->tf_regs[FRAME_T9] = regp->r_regs[R_T9]; 1678 framep->tf_regs[FRAME_T10] = regp->r_regs[R_T10]; 1679 framep->tf_regs[FRAME_T11] = regp->r_regs[R_T11]; 1680 framep->tf_regs[FRAME_RA] = regp->r_regs[R_RA]; 1681 framep->tf_regs[FRAME_T12] = regp->r_regs[R_T12]; 1682 framep->tf_regs[FRAME_AT] = regp->r_regs[R_AT]; 1683 framep->tf_regs[FRAME_GP] = regp->r_regs[R_GP]; 1684 /* framep->tf_regs[FRAME_SP] = regp->r_regs[R_SP]; XXX */ 1685 /* ??? = regp->r_regs[R_ZERO]; */ 1686 } 1687 1688 void 1689 printregs(regp) 1690 struct reg *regp; 1691 { 1692 int i; 1693 1694 for (i = 0; i < 32; i++) 1695 printf("R%d:\t0x%016lx%s", i, regp->r_regs[i], 1696 i & 1 ? "\n" : "\t"); 1697 } 1698 1699 void 1700 regdump(framep) 1701 struct trapframe *framep; 1702 { 1703 struct reg reg; 1704 1705 frametoreg(framep, ®); 1706 reg.r_regs[R_SP] = alpha_pal_rdusp(); 1707 1708 printf("REGISTERS:\n"); 1709 printregs(®); 1710 } 1711 1712 #ifdef DEBUG 1713 int sigdebug = 0; 1714 int sigpid = 0; 1715 #define SDB_FOLLOW 0x01 1716 #define SDB_KSTACK 0x02 1717 #endif 1718 1719 /* 1720 * Send an interrupt to process. 1721 */ 1722 void 1723 sendsig(catcher, sig, mask, code) 1724 sig_t catcher; 1725 int sig; 1726 sigset_t *mask; 1727 u_long code; 1728 { 1729 struct proc *p = curproc; 1730 struct sigcontext *scp, ksc; 1731 struct trapframe *frame; 1732 struct sigacts *psp = p->p_sigacts; 1733 int onstack, fsize, rndfsize; 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 1873 /* 1874 * The trampoline code hands us the context. 1875 * It is unsafe to keep track of it ourselves, in the event that a 1876 * program jumps out of a signal handler. 1877 */ 1878 scp = SCARG(uap, sigcntxp); 1879 #ifdef DEBUG 1880 if (sigdebug & SDB_FOLLOW) 1881 printf("sigreturn: pid %d, scp %p\n", p->p_pid, scp); 1882 #endif 1883 if (ALIGN(scp) != (u_int64_t)scp) 1884 return (EINVAL); 1885 1886 if (copyin((caddr_t)scp, &ksc, sizeof(ksc)) != 0) 1887 return (EFAULT); 1888 1889 if (ksc.sc_regs[R_ZERO] != 0xACEDBADE) /* magic number */ 1890 return (EINVAL); 1891 1892 /* Restore register context. */ 1893 p->p_md.md_tf->tf_regs[FRAME_PC] = ksc.sc_pc; 1894 p->p_md.md_tf->tf_regs[FRAME_PS] = 1895 (ksc.sc_ps | ALPHA_PSL_USERSET) & ~ALPHA_PSL_USERCLR; 1896 1897 regtoframe((struct reg *)ksc.sc_regs, p->p_md.md_tf); 1898 alpha_pal_wrusp(ksc.sc_regs[R_SP]); 1899 1900 /* XXX ksc.sc_ownedfp ? */ 1901 if (p == fpcurproc) 1902 fpcurproc = NULL; 1903 bcopy((struct fpreg *)ksc.sc_fpregs, &p->p_addr->u_pcb.pcb_fp, 1904 sizeof(struct fpreg)); 1905 /* XXX ksc.sc_fp_control ? */ 1906 1907 /* Restore signal stack. */ 1908 if (ksc.sc_onstack & SS_ONSTACK) 1909 p->p_sigacts->ps_sigstk.ss_flags |= SS_ONSTACK; 1910 else 1911 p->p_sigacts->ps_sigstk.ss_flags &= ~SS_ONSTACK; 1912 1913 /* Restore signal mask. */ 1914 (void) sigprocmask1(p, SIG_SETMASK, &ksc.sc_mask, 0); 1915 1916 #ifdef DEBUG 1917 if (sigdebug & SDB_FOLLOW) 1918 printf("sigreturn(%d): returns\n", p->p_pid); 1919 #endif 1920 return (EJUSTRETURN); 1921 } 1922 1923 /* 1924 * machine dependent system variables. 1925 */ 1926 int 1927 cpu_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 1928 int *name; 1929 u_int namelen; 1930 void *oldp; 1931 size_t *oldlenp; 1932 void *newp; 1933 size_t newlen; 1934 struct proc *p; 1935 { 1936 dev_t consdev; 1937 1938 /* all sysctl names at this level are terminal */ 1939 if (namelen != 1) 1940 return (ENOTDIR); /* overloaded */ 1941 1942 switch (name[0]) { 1943 case CPU_CONSDEV: 1944 if (cn_tab != NULL) 1945 consdev = cn_tab->cn_dev; 1946 else 1947 consdev = NODEV; 1948 return (sysctl_rdstruct(oldp, oldlenp, newp, &consdev, 1949 sizeof consdev)); 1950 1951 case CPU_ROOT_DEVICE: 1952 return (sysctl_rdstring(oldp, oldlenp, newp, 1953 root_device->dv_xname)); 1954 1955 case CPU_UNALIGNED_PRINT: 1956 return (sysctl_int(oldp, oldlenp, newp, newlen, 1957 &alpha_unaligned_print)); 1958 1959 case CPU_UNALIGNED_FIX: 1960 return (sysctl_int(oldp, oldlenp, newp, newlen, 1961 &alpha_unaligned_fix)); 1962 1963 case CPU_UNALIGNED_SIGBUS: 1964 return (sysctl_int(oldp, oldlenp, newp, newlen, 1965 &alpha_unaligned_sigbus)); 1966 1967 case CPU_BOOTED_KERNEL: 1968 return (sysctl_rdstring(oldp, oldlenp, newp, 1969 bootinfo.booted_kernel)); 1970 1971 default: 1972 return (EOPNOTSUPP); 1973 } 1974 /* NOTREACHED */ 1975 } 1976 1977 /* 1978 * Set registers on exec. 1979 */ 1980 void 1981 setregs(p, pack, stack) 1982 register struct proc *p; 1983 struct exec_package *pack; 1984 u_long stack; 1985 { 1986 struct trapframe *tfp = p->p_md.md_tf; 1987 #ifdef DEBUG 1988 int i; 1989 #endif 1990 1991 #ifdef DEBUG 1992 /* 1993 * Crash and dump, if the user requested it. 1994 */ 1995 if (boothowto & RB_DUMP) 1996 panic("crash requested by boot flags"); 1997 #endif 1998 1999 #ifdef DEBUG 2000 for (i = 0; i < FRAME_SIZE; i++) 2001 tfp->tf_regs[i] = 0xbabefacedeadbeef; 2002 #else 2003 bzero(tfp->tf_regs, FRAME_SIZE * sizeof tfp->tf_regs[0]); 2004 #endif 2005 bzero(&p->p_addr->u_pcb.pcb_fp, sizeof p->p_addr->u_pcb.pcb_fp); 2006 #define FP_RN 2 /* XXX */ 2007 p->p_addr->u_pcb.pcb_fp.fpr_cr = (long)FP_RN << 58; 2008 alpha_pal_wrusp(stack); 2009 tfp->tf_regs[FRAME_PS] = ALPHA_PSL_USERSET; 2010 tfp->tf_regs[FRAME_PC] = pack->ep_entry & ~3; 2011 2012 tfp->tf_regs[FRAME_A0] = stack; /* a0 = sp */ 2013 tfp->tf_regs[FRAME_A1] = 0; /* a1 = rtld cleanup */ 2014 tfp->tf_regs[FRAME_A2] = 0; /* a2 = rtld object */ 2015 tfp->tf_regs[FRAME_A3] = (u_int64_t)PS_STRINGS; /* a3 = ps_strings */ 2016 tfp->tf_regs[FRAME_T12] = tfp->tf_regs[FRAME_PC]; /* a.k.a. PV */ 2017 2018 p->p_md.md_flags &= ~MDP_FPUSED; 2019 if (fpcurproc == p) 2020 fpcurproc = NULL; 2021 } 2022 2023 void 2024 netintr() 2025 { 2026 int n, s; 2027 2028 s = splhigh(); 2029 n = netisr; 2030 netisr = 0; 2031 splx(s); 2032 2033 #define DONETISR(bit, fn) \ 2034 do { \ 2035 if (n & (1 << (bit))) \ 2036 fn; \ 2037 } while (0) 2038 2039 #ifdef INET 2040 #if NARP > 0 2041 DONETISR(NETISR_ARP, arpintr()); 2042 #endif 2043 DONETISR(NETISR_IP, ipintr()); 2044 #endif 2045 #ifdef NETATALK 2046 DONETISR(NETISR_ATALK, atintr()); 2047 #endif 2048 #ifdef NS 2049 DONETISR(NETISR_NS, nsintr()); 2050 #endif 2051 #ifdef ISO 2052 DONETISR(NETISR_ISO, clnlintr()); 2053 #endif 2054 #ifdef CCITT 2055 DONETISR(NETISR_CCITT, ccittintr()); 2056 #endif 2057 #ifdef NATM 2058 DONETISR(NETISR_NATM, natmintr()); 2059 #endif 2060 #if NPPP > 1 2061 DONETISR(NETISR_PPP, pppintr()); 2062 #endif 2063 2064 #undef DONETISR 2065 } 2066 2067 void 2068 do_sir() 2069 { 2070 u_int64_t n; 2071 2072 do { 2073 (void)splhigh(); 2074 n = ssir; 2075 ssir = 0; 2076 splsoft(); /* don't recurse through spl0() */ 2077 2078 #if defined(UVM) 2079 #define COUNT_SOFT uvmexp.softs++ 2080 #else 2081 #define COUNT_SOFT cnt.v_soft++ 2082 #endif 2083 2084 #define DO_SIR(bit, fn) \ 2085 do { \ 2086 if (n & (bit)) { \ 2087 COUNT_SOFT; \ 2088 fn; \ 2089 } \ 2090 } while (0) 2091 2092 DO_SIR(SIR_NET, netintr()); 2093 DO_SIR(SIR_CLOCK, softclock()); 2094 #if NCOM > 0 2095 DO_SIR(SIR_SERIAL, comsoft()); 2096 #endif 2097 2098 #undef COUNT_SOFT 2099 #undef DO_SIR 2100 } while (ssir != 0); 2101 } 2102 2103 int 2104 spl0() 2105 { 2106 2107 if (ssir) 2108 do_sir(); /* it lowers the IPL itself */ 2109 2110 return (alpha_pal_swpipl(ALPHA_PSL_IPL_0)); 2111 } 2112 2113 /* 2114 * The following primitives manipulate the run queues. _whichqs tells which 2115 * of the 32 queues _qs have processes in them. Setrunqueue puts processes 2116 * into queues, Remrunqueue removes them from queues. The running process is 2117 * on no queue, other processes are on a queue related to p->p_priority, 2118 * divided by 4 actually to shrink the 0-127 range of priorities into the 32 2119 * available queues. 2120 */ 2121 /* 2122 * setrunqueue(p) 2123 * proc *p; 2124 * 2125 * Call should be made at splclock(), and p->p_stat should be SRUN. 2126 */ 2127 2128 void 2129 setrunqueue(p) 2130 struct proc *p; 2131 { 2132 int bit; 2133 2134 /* firewall: p->p_back must be NULL */ 2135 if (p->p_back != NULL) 2136 panic("setrunqueue"); 2137 2138 bit = p->p_priority >> 2; 2139 whichqs |= (1 << bit); 2140 p->p_forw = (struct proc *)&qs[bit]; 2141 p->p_back = qs[bit].ph_rlink; 2142 p->p_back->p_forw = p; 2143 qs[bit].ph_rlink = p; 2144 } 2145 2146 /* 2147 * remrunqueue(p) 2148 * 2149 * Call should be made at splclock(). 2150 */ 2151 void 2152 remrunqueue(p) 2153 struct proc *p; 2154 { 2155 int bit; 2156 2157 bit = p->p_priority >> 2; 2158 if ((whichqs & (1 << bit)) == 0) 2159 panic("remrunqueue"); 2160 2161 p->p_back->p_forw = p->p_forw; 2162 p->p_forw->p_back = p->p_back; 2163 p->p_back = NULL; /* for firewall checking. */ 2164 2165 if ((struct proc *)&qs[bit] == qs[bit].ph_link) 2166 whichqs &= ~(1 << bit); 2167 } 2168 2169 /* 2170 * Return the best possible estimate of the time in the timeval 2171 * to which tvp points. Unfortunately, we can't read the hardware registers. 2172 * We guarantee that the time will be greater than the value obtained by a 2173 * previous call. 2174 */ 2175 void 2176 microtime(tvp) 2177 register struct timeval *tvp; 2178 { 2179 int s = splclock(); 2180 static struct timeval lasttime; 2181 2182 *tvp = time; 2183 #ifdef notdef 2184 tvp->tv_usec += clkread(); 2185 while (tvp->tv_usec > 1000000) { 2186 tvp->tv_sec++; 2187 tvp->tv_usec -= 1000000; 2188 } 2189 #endif 2190 if (tvp->tv_sec == lasttime.tv_sec && 2191 tvp->tv_usec <= lasttime.tv_usec && 2192 (tvp->tv_usec = lasttime.tv_usec + 1) > 1000000) { 2193 tvp->tv_sec++; 2194 tvp->tv_usec -= 1000000; 2195 } 2196 lasttime = *tvp; 2197 splx(s); 2198 } 2199 2200 /* 2201 * Wait "n" microseconds. 2202 */ 2203 void 2204 delay(n) 2205 unsigned long n; 2206 { 2207 long N = cycles_per_usec * (n); 2208 2209 while (N > 0) /* XXX */ 2210 N -= 3; /* XXX */ 2211 } 2212 2213 #if defined(COMPAT_OSF1) || 1 /* XXX */ 2214 void cpu_exec_ecoff_setregs __P((struct proc *, struct exec_package *, 2215 u_long)); 2216 2217 void 2218 cpu_exec_ecoff_setregs(p, epp, stack) 2219 struct proc *p; 2220 struct exec_package *epp; 2221 u_long stack; 2222 { 2223 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2224 2225 setregs(p, epp, stack); 2226 p->p_md.md_tf->tf_regs[FRAME_GP] = execp->a.gp_value; 2227 } 2228 2229 /* 2230 * cpu_exec_ecoff_hook(): 2231 * cpu-dependent ECOFF format hook for execve(). 2232 * 2233 * Do any machine-dependent diddling of the exec package when doing ECOFF. 2234 * 2235 */ 2236 int 2237 cpu_exec_ecoff_hook(p, epp) 2238 struct proc *p; 2239 struct exec_package *epp; 2240 { 2241 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2242 extern struct emul emul_netbsd; 2243 #ifdef COMPAT_OSF1 2244 extern struct emul emul_osf1; 2245 #endif 2246 2247 switch (execp->f.f_magic) { 2248 #ifdef COMPAT_OSF1 2249 case ECOFF_MAGIC_ALPHA: 2250 epp->ep_emul = &emul_osf1; 2251 break; 2252 #endif 2253 2254 case ECOFF_MAGIC_NETBSD_ALPHA: 2255 epp->ep_emul = &emul_netbsd; 2256 break; 2257 2258 default: 2259 return ENOEXEC; 2260 } 2261 return 0; 2262 } 2263 #endif 2264 2265 int 2266 alpha_pa_access(pa) 2267 u_long pa; 2268 { 2269 int i; 2270 2271 for (i = 0; i < mem_cluster_cnt; i++) { 2272 if (pa < mem_clusters[i].start) 2273 continue; 2274 if ((pa - mem_clusters[i].start) >= 2275 (mem_clusters[i].size & ~PAGE_MASK)) 2276 continue; 2277 return (mem_clusters[i].size & PAGE_MASK); /* prot */ 2278 } 2279 return (PROT_NONE); 2280 } 2281 2282 /* XXX XXX BEGIN XXX XXX */ 2283 paddr_t alpha_XXX_dmamap_or; /* XXX */ 2284 /* XXX */ 2285 paddr_t /* XXX */ 2286 alpha_XXX_dmamap(v) /* XXX */ 2287 vaddr_t v; /* XXX */ 2288 { /* XXX */ 2289 /* XXX */ 2290 return (vtophys(v) | alpha_XXX_dmamap_or); /* XXX */ 2291 } /* XXX */ 2292 /* XXX XXX END XXX XXX */ 2293 2294 struct mchkinfo * 2295 cpu_mchkinfo() 2296 { 2297 if (mchkinfo_all_cpus == NULL) 2298 return &startup_info; 2299 return mchkinfo_all_cpus + alpha_pal_whami(); 2300 } 2301
Indexes created Thu Oct 02 10:09:58 GMT 2025