machdep.c revision 1.155
1 /* $NetBSD: machdep.c,v 1.155 1998/11/19 02:28:56 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 1.155 1998/11/19 02:28:56 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 <machine/alpha.h> 190 #include <machine/intrcnt.h> 191 192 #include "com.h" 193 #if NCOM > 0 194 extern void comsoft __P((void)); 195 #endif 196 197 #if defined(UVM) 198 vm_map_t exec_map = NULL; 199 vm_map_t mb_map = NULL; 200 vm_map_t phys_map = NULL; 201 #else 202 vm_map_t buffer_map; 203 #endif 204 205 /* 206 * Declare these as initialized data so we can patch them. 207 */ 208 int nswbuf = 0; 209 #ifdef NBUF 210 int nbuf = NBUF; 211 #else 212 int nbuf = 0; 213 #endif 214 215 #ifndef BUFPAGES 216 #define BUFPAGES 0 217 #endif 218 #ifndef BUFCACHE 219 #define BUFCACHE 10 220 #endif 221 222 int bufpages = BUFPAGES; /* optional hardwired count */ 223 int bufcache = BUFCACHE; /* % of RAM to use for buffer cache */ 224 225 caddr_t msgbufaddr; 226 227 int maxmem; /* max memory per process */ 228 229 int totalphysmem; /* total amount of physical memory in system */ 230 int physmem; /* physical memory used by NetBSD + some rsvd */ 231 int resvmem; /* amount of memory reserved for PROM */ 232 int unusedmem; /* amount of memory for OS that we don't use */ 233 int unknownmem; /* amount of memory with an unknown use */ 234 235 int cputype; /* system type, from the RPB */ 236 237 /* 238 * XXX We need an address to which we can assign things so that they 239 * won't be optimized away because we didn't use the value. 240 */ 241 u_int32_t no_optimize; 242 243 /* the following is used externally (sysctl_hw) */ 244 char machine[] = MACHINE; /* from <machine/param.h> */ 245 char machine_arch[] = MACHINE_ARCH; /* from <machine/param.h> */ 246 char cpu_model[128]; 247 248 struct user *proc0paddr; 249 250 /* Number of machine cycles per microsecond */ 251 u_int64_t cycles_per_usec; 252 253 /* number of cpus in the box. really! */ 254 int ncpus; 255 256 /* machine check info array, valloc()'ed in allocsys() */ 257 258 static struct mchkinfo startup_info, 259 *mchkinfo_all_cpus; 260 261 struct bootinfo_kernel bootinfo; 262 263 /* For built-in TCDS */ 264 #if defined(DEC_3000_300) || defined(DEC_3000_500) 265 u_int8_t dec_3000_scsiid[2], dec_3000_scsifast[2]; 266 #endif 267 268 struct platform platform; 269 270 u_int32_t vm_mbuf_size = _VM_MBUF_SIZE; 271 u_int32_t vm_kmem_size = _VM_KMEM_SIZE; 272 u_int32_t vm_phys_size = _VM_PHYS_SIZE; 273 274 #ifdef DDB 275 /* start and end of kernel symbol table */ 276 void *ksym_start, *ksym_end; 277 #endif 278 279 /* for cpu_sysctl() */ 280 int alpha_unaligned_print = 1; /* warn about unaligned accesses */ 281 int alpha_unaligned_fix = 1; /* fix up unaligned accesses */ 282 int alpha_unaligned_sigbus = 0; /* don't SIGBUS on fixed-up accesses */ 283 284 /* 285 * XXX This should be dynamically sized, but we have the chicken-egg problem! 286 * XXX it should also be larger than it is, because not all of the mddt 287 * XXX clusters end up being used for VM. 288 */ 289 phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX]; /* low size bits overloaded */ 290 int mem_cluster_cnt; 291 292 caddr_t allocsys __P((caddr_t)); 293 int cpu_dump __P((void)); 294 int cpu_dumpsize __P((void)); 295 u_long cpu_dump_mempagecnt __P((void)); 296 void dumpsys __P((void)); 297 void identifycpu __P((void)); 298 void netintr __P((void)); 299 void printregs __P((struct reg *)); 300 301 void 302 alpha_init(pfn, ptb, bim, bip, biv) 303 u_long pfn; /* first free PFN number */ 304 u_long ptb; /* PFN of current level 1 page table */ 305 u_long bim; /* bootinfo magic */ 306 u_long bip; /* bootinfo pointer */ 307 u_long biv; /* bootinfo version */ 308 { 309 extern char kernel_text[], _end[]; 310 struct mddt *mddtp; 311 struct mddt_cluster *memc; 312 int i, mddtweird; 313 struct vm_physseg *vps; 314 vaddr_t kernstart, kernend; 315 paddr_t kernstartpfn, kernendpfn, pfn0, pfn1; 316 vsize_t size; 317 char *p; 318 caddr_t v; 319 char *bootinfo_msg; 320 321 /* NO OUTPUT ALLOWED UNTIL FURTHER NOTICE */ 322 323 /* 324 * Turn off interrupts (not mchecks) and floating point. 325 * Make sure the instruction and data streams are consistent. 326 */ 327 (void)alpha_pal_swpipl(ALPHA_PSL_IPL_HIGH); 328 alpha_pal_wrfen(0); 329 ALPHA_TBIA(); 330 alpha_pal_imb(); 331 332 /* 333 * Get critical system information (if possible, from the 334 * information provided by the boot program). 335 */ 336 bootinfo_msg = NULL; 337 if (bim == BOOTINFO_MAGIC) { 338 if (biv == 0) { /* backward compat */ 339 biv = *(u_long *)bip; 340 bip += 8; 341 } 342 switch (biv) { 343 case 1: { 344 struct bootinfo_v1 *v1p = (struct bootinfo_v1 *)bip; 345 346 bootinfo.ssym = v1p->ssym; 347 bootinfo.esym = v1p->esym; 348 /* hwrpb may not be provided by boot block in v1 */ 349 if (v1p->hwrpb != NULL) { 350 bootinfo.hwrpb_phys = 351 ((struct rpb *)v1p->hwrpb)->rpb_phys; 352 bootinfo.hwrpb_size = v1p->hwrpbsize; 353 } else { 354 bootinfo.hwrpb_phys = 355 ((struct rpb *)HWRPB_ADDR)->rpb_phys; 356 bootinfo.hwrpb_size = 357 ((struct rpb *)HWRPB_ADDR)->rpb_size; 358 } 359 bcopy(v1p->boot_flags, bootinfo.boot_flags, 360 min(sizeof v1p->boot_flags, 361 sizeof bootinfo.boot_flags)); 362 bcopy(v1p->booted_kernel, bootinfo.booted_kernel, 363 min(sizeof v1p->booted_kernel, 364 sizeof bootinfo.booted_kernel)); 365 /* booted dev not provided in bootinfo */ 366 init_prom_interface((struct rpb *) 367 ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys)); 368 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 369 sizeof bootinfo.booted_dev); 370 break; 371 } 372 default: 373 bootinfo_msg = "unknown bootinfo version"; 374 goto nobootinfo; 375 } 376 } else { 377 bootinfo_msg = "boot program did not pass bootinfo"; 378 nobootinfo: 379 bootinfo.ssym = (u_long)_end; 380 bootinfo.esym = (u_long)_end; 381 bootinfo.hwrpb_phys = ((struct rpb *)HWRPB_ADDR)->rpb_phys; 382 bootinfo.hwrpb_size = ((struct rpb *)HWRPB_ADDR)->rpb_size; 383 init_prom_interface((struct rpb *)HWRPB_ADDR); 384 prom_getenv(PROM_E_BOOTED_OSFLAGS, bootinfo.boot_flags, 385 sizeof bootinfo.boot_flags); 386 prom_getenv(PROM_E_BOOTED_FILE, bootinfo.booted_kernel, 387 sizeof bootinfo.booted_kernel); 388 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 389 sizeof bootinfo.booted_dev); 390 } 391 392 /* 393 * Initialize the kernel's mapping of the RPB. It's needed for 394 * lots of things. 395 */ 396 hwrpb = (struct rpb *)ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys); 397 398 #if defined(DEC_3000_300) || defined(DEC_3000_500) 399 if (hwrpb->rpb_type == ST_DEC_3000_300 || 400 hwrpb->rpb_type == ST_DEC_3000_500) { 401 prom_getenv(PROM_E_SCSIID, dec_3000_scsiid, 402 sizeof(dec_3000_scsiid)); 403 prom_getenv(PROM_E_SCSIFAST, dec_3000_scsifast, 404 sizeof(dec_3000_scsifast)); 405 } 406 #endif 407 408 /* 409 * Remember how many cycles there are per microsecond, 410 * so that we can use delay(). Round up, for safety. 411 */ 412 cycles_per_usec = (hwrpb->rpb_cc_freq + 999999) / 1000000; 413 414 /* 415 * Initalize the (temporary) bootstrap console interface, so 416 * we can use printf until the VM system starts being setup. 417 * The real console is initialized before then. 418 */ 419 init_bootstrap_console(); 420 421 /* OUTPUT NOW ALLOWED */ 422 423 /* delayed from above */ 424 if (bootinfo_msg) 425 printf("WARNING: %s (0x%lx, 0x%lx, 0x%lx)\n", 426 bootinfo_msg, bim, bip, biv); 427 428 /* Initialize the trap vectors on the primary processor. */ 429 trap_init(); 430 431 /* 432 * Find out what hardware we're on, and do basic initialization. 433 */ 434 cputype = hwrpb->rpb_type; 435 if (cputype >= ncpuinit) { 436 platform_not_supported(); 437 /* NOTREACHED */ 438 } 439 (*cpuinit[cputype].init)(); 440 strcpy(cpu_model, platform.model); 441 442 /* 443 * Initalize the real console, so the the bootstrap console is 444 * no longer necessary. 445 */ 446 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 447 if (!pmap_uses_prom_console()) 448 #endif 449 (*platform.cons_init)(); 450 451 #ifdef DIAGNOSTIC 452 /* Paranoid sanity checking */ 453 454 /* We should always be running on the the primary. */ 455 assert(hwrpb->rpb_primary_cpu_id == alpha_pal_whami()); 456 457 /* 458 * On single-CPU systypes, the primary should always be CPU 0, 459 * except on Alpha 8200 systems where the CPU id is related 460 * to the VID, which is related to the Turbo Laser node id. 461 */ 462 if (cputype != ST_DEC_21000) 463 assert(hwrpb->rpb_primary_cpu_id == 0); 464 #endif 465 466 /* NO MORE FIRMWARE ACCESS ALLOWED */ 467 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 468 /* 469 * XXX (unless _PMAP_MAY_USE_PROM_CONSOLE is defined and 470 * XXX pmap_uses_prom_console() evaluates to non-zero.) 471 */ 472 #endif 473 474 /* 475 * find out this system's page size 476 */ 477 PAGE_SIZE = hwrpb->rpb_page_size; 478 if (PAGE_SIZE != 8192) 479 panic("page size %d != 8192?!", PAGE_SIZE); 480 481 /* 482 * Initialize PAGE_SIZE-dependent variables. 483 */ 484 #if defined(UVM) 485 uvm_setpagesize(); 486 #else 487 vm_set_page_size(); 488 #endif 489 490 /* 491 * Find the beginning and end of the kernel (and leave a 492 * bit of space before the beginning for the bootstrap 493 * stack). 494 */ 495 kernstart = trunc_page(kernel_text) - 2 * PAGE_SIZE; 496 #ifdef DDB 497 ksym_start = (void *)bootinfo.ssym; 498 ksym_end = (void *)bootinfo.esym; 499 kernend = (vaddr_t)round_page(ksym_end); 500 #else 501 kernend = (vaddr_t)round_page(_end); 502 #endif 503 504 kernstartpfn = atop(ALPHA_K0SEG_TO_PHYS(kernstart)); 505 kernendpfn = atop(ALPHA_K0SEG_TO_PHYS(kernend)); 506 507 /* 508 * Find out how much memory is available, by looking at 509 * the memory cluster descriptors. This also tries to do 510 * its best to detect things things that have never been seen 511 * before... 512 */ 513 mddtp = (struct mddt *)(((caddr_t)hwrpb) + hwrpb->rpb_memdat_off); 514 515 /* MDDT SANITY CHECKING */ 516 mddtweird = 0; 517 if (mddtp->mddt_cluster_cnt < 2) { 518 mddtweird = 1; 519 printf("WARNING: weird number of mem clusters: %d\n", 520 mddtp->mddt_cluster_cnt); 521 } 522 523 #if 0 524 printf("Memory cluster count: %d\n", mddtp->mddt_cluster_cnt); 525 #endif 526 527 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 528 memc = &mddtp->mddt_clusters[i]; 529 #if 0 530 printf("MEMC %d: pfn 0x%lx cnt 0x%lx usage 0x%lx\n", i, 531 memc->mddt_pfn, memc->mddt_pg_cnt, memc->mddt_usage); 532 #endif 533 totalphysmem += memc->mddt_pg_cnt; 534 if (mem_cluster_cnt < VM_PHYSSEG_MAX) { /* XXX */ 535 mem_clusters[mem_cluster_cnt].start = 536 ptoa(memc->mddt_pfn); 537 mem_clusters[mem_cluster_cnt].size = 538 ptoa(memc->mddt_pg_cnt); 539 if (memc->mddt_usage & MDDT_mbz || 540 memc->mddt_usage & MDDT_NONVOLATILE || /* XXX */ 541 memc->mddt_usage & MDDT_PALCODE) 542 mem_clusters[mem_cluster_cnt].size |= 543 PROT_READ; 544 else 545 mem_clusters[mem_cluster_cnt].size |= 546 PROT_READ | PROT_WRITE | PROT_EXEC; 547 mem_cluster_cnt++; 548 } 549 550 if (memc->mddt_usage & MDDT_mbz) { 551 mddtweird = 1; 552 printf("WARNING: mem cluster %d has weird " 553 "usage 0x%lx\n", i, memc->mddt_usage); 554 unknownmem += memc->mddt_pg_cnt; 555 continue; 556 } 557 if (memc->mddt_usage & MDDT_NONVOLATILE) { 558 /* XXX should handle these... */ 559 printf("WARNING: skipping non-volatile mem " 560 "cluster %d\n", i); 561 unusedmem += memc->mddt_pg_cnt; 562 continue; 563 } 564 if (memc->mddt_usage & MDDT_PALCODE) { 565 resvmem += memc->mddt_pg_cnt; 566 continue; 567 } 568 569 /* 570 * We have a memory cluster available for system 571 * software use. We must determine if this cluster 572 * holds the kernel. 573 */ 574 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 575 /* 576 * XXX If the kernel uses the PROM console, we only use the 577 * XXX memory after the kernel in the first system segment, 578 * XXX to avoid clobbering prom mapping, data, etc. 579 */ 580 if (!pmap_uses_prom_console() || physmem == 0) { 581 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 582 physmem += memc->mddt_pg_cnt; 583 pfn0 = memc->mddt_pfn; 584 pfn1 = memc->mddt_pfn + memc->mddt_pg_cnt; 585 if (pfn0 <= kernstartpfn && kernendpfn <= pfn1) { 586 /* 587 * Must compute the location of the kernel 588 * within the segment. 589 */ 590 #if 0 591 printf("Cluster %d contains kernel\n", i); 592 #endif 593 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 594 if (!pmap_uses_prom_console()) { 595 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 596 if (pfn0 < kernstartpfn) { 597 /* 598 * There is a chunk before the kernel. 599 */ 600 #if 0 601 printf("Loading chunk before kernel: " 602 "0x%lx / 0x%lx\n", pfn0, kernstartpfn); 603 #endif 604 #if defined(UVM) 605 uvm_page_physload(pfn0, kernstartpfn, 606 pfn0, kernstartpfn, VM_FREELIST_DEFAULT); 607 #else 608 vm_page_physload(pfn0, kernstartpfn, 609 pfn0, kernstartpfn); 610 #endif 611 } 612 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 613 } 614 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 615 if (kernendpfn < pfn1) { 616 /* 617 * There is a chunk after the kernel. 618 */ 619 #if 0 620 printf("Loading chunk after kernel: " 621 "0x%lx / 0x%lx\n", kernendpfn, pfn1); 622 #endif 623 #if defined(UVM) 624 uvm_page_physload(kernendpfn, pfn1, 625 kernendpfn, pfn1, VM_FREELIST_DEFAULT); 626 #else 627 vm_page_physload(kernendpfn, pfn1, 628 kernendpfn, pfn1); 629 #endif 630 } 631 } else { 632 /* 633 * Just load this cluster as one chunk. 634 */ 635 #if 0 636 printf("Loading cluster %d: 0x%lx / 0x%lx\n", i, 637 pfn0, pfn1); 638 #endif 639 #if defined(UVM) 640 uvm_page_physload(pfn0, pfn1, pfn0, pfn1, 641 VM_FREELIST_DEFAULT); 642 #else 643 vm_page_physload(pfn0, pfn1, pfn0, pfn1); 644 #endif 645 } 646 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 647 } 648 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 649 } 650 651 /* 652 * Dump out the MDDT if it looks odd... 653 */ 654 if (mddtweird) { 655 printf("\n"); 656 printf("complete memory cluster information:\n"); 657 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 658 printf("mddt %d:\n", i); 659 printf("\tpfn %lx\n", 660 mddtp->mddt_clusters[i].mddt_pfn); 661 printf("\tcnt %lx\n", 662 mddtp->mddt_clusters[i].mddt_pg_cnt); 663 printf("\ttest %lx\n", 664 mddtp->mddt_clusters[i].mddt_pg_test); 665 printf("\tbva %lx\n", 666 mddtp->mddt_clusters[i].mddt_v_bitaddr); 667 printf("\tbpa %lx\n", 668 mddtp->mddt_clusters[i].mddt_p_bitaddr); 669 printf("\tbcksum %lx\n", 670 mddtp->mddt_clusters[i].mddt_bit_cksum); 671 printf("\tusage %lx\n", 672 mddtp->mddt_clusters[i].mddt_usage); 673 } 674 printf("\n"); 675 } 676 677 if (totalphysmem == 0) 678 panic("can't happen: system seems to have no memory!"); 679 680 #ifdef LIMITMEM 681 /* 682 * XXX Kludge so we can run on machines with memory larger 683 * XXX than 1G until all device drivers are converted to 684 * XXX use bus_dma. (Relies on the fact that vm_physmem 685 * XXX sorted in order of increasing addresses.) 686 */ 687 if (vm_physmem[vm_nphysseg - 1].end > atop(LIMITMEM * 1024 * 1024)) { 688 689 printf("******** LIMITING MEMORY TO %dMB **********\n", 690 LIMITMEM); 691 692 do { 693 u_long ovf; 694 695 vps = &vm_physmem[vm_nphysseg - 1]; 696 697 if (vps->start >= atop(LIMITMEM * 1024 * 1024)) { 698 /* 699 * If the start is too high, just drop 700 * the whole segment. 701 * 702 * XXX can start != avail_start in this 703 * XXX case? wouldn't that mean that 704 * XXX some memory was stolen above the 705 * XXX limit? What to do? 706 */ 707 ovf = vps->end - vps->start; 708 vm_nphysseg--; 709 } else { 710 /* 711 * If the start is OK, calculate how much 712 * to drop and drop it. 713 */ 714 ovf = vps->end - atop(LIMITMEM * 1024 * 1024); 715 vps->end -= ovf; 716 vps->avail_end -= ovf; 717 } 718 physmem -= ovf; 719 unusedmem += ovf; 720 } while (vps->end > atop(LIMITMEM * 1024 * 1024)); 721 } 722 #endif /* LIMITMEM */ 723 724 maxmem = physmem; 725 726 #if 0 727 printf("totalphysmem = %d\n", totalphysmem); 728 printf("physmem = %d\n", physmem); 729 printf("resvmem = %d\n", resvmem); 730 printf("unusedmem = %d\n", unusedmem); 731 printf("unknownmem = %d\n", unknownmem); 732 #endif 733 734 /* 735 * Adjust some parameters if the amount of physmem 736 * available would cause us to croak. This is completely 737 * eyeballed and isn't meant to be the final answer. 738 * vm_phys_size is probably the only one to really worry 739 * about. 740 * 741 * It's for booting a GENERIC kernel on a large memory platform. 742 */ 743 if (physmem >= atop(128 * 1024 * 1024)) { 744 vm_mbuf_size <<= 1; 745 vm_kmem_size <<= 3; 746 vm_phys_size <<= 2; 747 } 748 749 /* 750 * Initialize error message buffer (at end of core). 751 */ 752 { 753 size_t sz = round_page(MSGBUFSIZE); 754 755 vps = &vm_physmem[vm_nphysseg - 1]; 756 757 /* shrink so that it'll fit in the last segment */ 758 if ((vps->avail_end - vps->avail_start) < atop(sz)) 759 sz = ptoa(vps->avail_end - vps->avail_start); 760 761 vps->end -= atop(sz); 762 vps->avail_end -= atop(sz); 763 msgbufaddr = (caddr_t) ALPHA_PHYS_TO_K0SEG(ptoa(vps->end)); 764 initmsgbuf(msgbufaddr, sz); 765 766 /* Remove the last segment if it now has no pages. */ 767 if (vps->start == vps->end) 768 vm_nphysseg--; 769 770 /* warn if the message buffer had to be shrunk */ 771 if (sz != round_page(MSGBUFSIZE)) 772 printf("WARNING: %d bytes not available for msgbuf in last cluster (%d used)\n", 773 round_page(MSGBUFSIZE), sz); 774 775 } 776 777 /* 778 * Init mapping for u page(s) for proc 0 779 */ 780 proc0.p_addr = proc0paddr = 781 (struct user *)pmap_steal_memory(UPAGES * PAGE_SIZE, NULL, NULL); 782 783 /* 784 * Allocate space for system data structures. These data structures 785 * are allocated here instead of cpu_startup() because physical 786 * memory is directly addressable. We don't have to map these into 787 * virtual address space. 788 */ 789 size = (vsize_t)allocsys(0); 790 v = (caddr_t)pmap_steal_memory(size, NULL, NULL); 791 if ((allocsys(v) - v) != size) 792 panic("alpha_init: table size inconsistency"); 793 794 /* 795 * Initialize the virtual memory system, and set the 796 * page table base register in proc 0's PCB. 797 */ 798 pmap_bootstrap(ALPHA_PHYS_TO_K0SEG(ptb << PGSHIFT), 799 hwrpb->rpb_max_asn, hwrpb->rpb_pcs_cnt); 800 801 /* 802 * Initialize the rest of proc 0's PCB, and cache its physical 803 * address. 804 */ 805 proc0.p_md.md_pcbpaddr = 806 (struct pcb *)ALPHA_K0SEG_TO_PHYS((vaddr_t)&proc0paddr->u_pcb); 807 808 /* 809 * Set the kernel sp, reserving space for an (empty) trapframe, 810 * and make proc0's trapframe pointer point to it for sanity. 811 */ 812 proc0paddr->u_pcb.pcb_hw.apcb_ksp = 813 (u_int64_t)proc0paddr + USPACE - sizeof(struct trapframe); 814 proc0.p_md.md_tf = 815 (struct trapframe *)proc0paddr->u_pcb.pcb_hw.apcb_ksp; 816 817 /* 818 * Look at arguments passed to us and compute boothowto. 819 */ 820 821 boothowto = RB_SINGLE; 822 #ifdef KADB 823 boothowto |= RB_KDB; 824 #endif 825 for (p = bootinfo.boot_flags; p && *p != '\0'; p++) { 826 /* 827 * Note that we'd really like to differentiate case here, 828 * but the Alpha AXP Architecture Reference Manual 829 * says that we shouldn't. 830 */ 831 switch (*p) { 832 case 'a': /* autoboot */ 833 case 'A': 834 boothowto &= ~RB_SINGLE; 835 break; 836 837 #ifdef DEBUG 838 case 'c': /* crash dump immediately after autoconfig */ 839 case 'C': 840 boothowto |= RB_DUMP; 841 break; 842 #endif 843 844 #if defined(KGDB) || defined(DDB) 845 case 'd': /* break into the kernel debugger ASAP */ 846 case 'D': 847 boothowto |= RB_KDB; 848 break; 849 #endif 850 851 case 'h': /* always halt, never reboot */ 852 case 'H': 853 boothowto |= RB_HALT; 854 break; 855 856 #if 0 857 case 'm': /* mini root present in memory */ 858 case 'M': 859 boothowto |= RB_MINIROOT; 860 break; 861 #endif 862 863 case 'n': /* askname */ 864 case 'N': 865 boothowto |= RB_ASKNAME; 866 break; 867 868 case 's': /* single-user (default, supported for sanity) */ 869 case 'S': 870 boothowto |= RB_SINGLE; 871 break; 872 873 case '-': 874 /* 875 * Just ignore this. It's not required, but it's 876 * common for it to be passed regardless. 877 */ 878 break; 879 880 default: 881 printf("Unrecognized boot flag '%c'.\n", *p); 882 break; 883 } 884 } 885 886 887 /* 888 * Figure out the number of cpus in the box, from RPB fields. 889 * Really. We mean it. 890 */ 891 for (i = 0; i < hwrpb->rpb_pcs_cnt; i++) { 892 struct pcs *pcsp; 893 894 pcsp = LOCATE_PCS(hwrpb, i); 895 if ((pcsp->pcs_flags & PCS_PP) != 0) 896 ncpus++; 897 } 898 899 /* 900 * Initialize debuggers, and break into them if appropriate. 901 */ 902 #ifdef DDB 903 db_machine_init(); 904 ddb_init(ksym_start, ksym_end); 905 if (boothowto & RB_KDB) 906 Debugger(); 907 #endif 908 #ifdef KGDB 909 if (boothowto & RB_KDB) 910 kgdb_connect(0); 911 #endif 912 /* 913 * Figure out our clock frequency, from RPB fields. 914 */ 915 hz = hwrpb->rpb_intr_freq >> 12; 916 if (!(60 <= hz && hz <= 10240)) { 917 hz = 1024; 918 #ifdef DIAGNOSTIC 919 printf("WARNING: unbelievable rpb_intr_freq: %ld (%d hz)\n", 920 hwrpb->rpb_intr_freq, hz); 921 #endif 922 } 923 } 924 925 /* 926 * Allocate space for system data structures. We are given 927 * a starting virtual address and we return a final virtual 928 * address; along the way we set each data structure pointer. 929 * 930 * We call allocsys() with 0 to find out how much space we want, 931 * allocate that much and fill it with zeroes, and the call 932 * allocsys() again with the correct base virtual address. 933 */ 934 caddr_t 935 allocsys(v) 936 caddr_t v; 937 { 938 939 #define valloc(name, type, num) \ 940 (name) = (type *)v; v = (caddr_t)ALIGN((name)+(num)) 941 942 #ifdef REAL_CLISTS 943 valloc(cfree, struct cblock, nclist); 944 #endif 945 valloc(callout, struct callout, ncallout); 946 #ifdef SYSVSHM 947 valloc(shmsegs, struct shmid_ds, shminfo.shmmni); 948 #endif 949 #ifdef SYSVSEM 950 valloc(sema, struct semid_ds, seminfo.semmni); 951 valloc(sem, struct sem, seminfo.semmns); 952 /* This is pretty disgusting! */ 953 valloc(semu, int, (seminfo.semmnu * seminfo.semusz) / sizeof(int)); 954 #endif 955 #ifdef SYSVMSG 956 valloc(msgpool, char, msginfo.msgmax); 957 valloc(msgmaps, struct msgmap, msginfo.msgseg); 958 valloc(msghdrs, struct msg, msginfo.msgtql); 959 valloc(msqids, struct msqid_ds, msginfo.msgmni); 960 #endif 961 962 /* 963 * Determine how many buffers to allocate. 964 * We allocate bufcache % of memory for buffer space. Insure a 965 * minimum of 16 buffers. We allocate 1/2 as many swap buffer 966 * headers as file i/o buffers. 967 */ 968 if (bufpages == 0) 969 bufpages = physmem / CLSIZE * bufcache / 100; 970 if (nbuf == 0) { 971 nbuf = bufpages; 972 if (nbuf < 16) 973 nbuf = 16; 974 } 975 if (nswbuf == 0) { 976 nswbuf = (nbuf / 2) &~ 1; /* force even */ 977 if (nswbuf > 256) 978 nswbuf = 256; /* sanity */ 979 } 980 #if !defined(UVM) 981 valloc(swbuf, struct buf, nswbuf); 982 #endif 983 valloc(buf, struct buf, nbuf); 984 985 /* 986 * There appears to be a correlation between the number 987 * of processor slots defined in the HWRPB and the whami 988 * value that can be returned. 989 */ 990 valloc(mchkinfo_all_cpus, struct mchkinfo, hwrpb->rpb_pcs_cnt); 991 992 return (v); 993 #undef valloc 994 } 995 996 void 997 consinit() 998 { 999 1000 /* 1001 * Everything related to console initialization is done 1002 * in alpha_init(). 1003 */ 1004 #if defined(DIAGNOSTIC) && defined(_PMAP_MAY_USE_PROM_CONSOLE) 1005 printf("consinit: %susing prom console\n", 1006 pmap_uses_prom_console() ? "" : "not "); 1007 #endif 1008 } 1009 1010 #include "pckbc.h" 1011 #include "pckbd.h" 1012 #if (NPCKBC > 0) && (NPCKBD == 0) 1013 1014 #include <dev/isa/pckbcvar.h> 1015 1016 /* 1017 * This is called by the pbkbc driver if no pckbd is configured. 1018 * On the i386, it is used to glue in the old, deprecated console 1019 * code. On the Alpha, it does nothing. 1020 */ 1021 int 1022 pckbc_machdep_cnattach(kbctag, kbcslot) 1023 pckbc_tag_t kbctag; 1024 pckbc_slot_t kbcslot; 1025 { 1026 1027 return (ENXIO); 1028 } 1029 #endif /* NPCKBC > 0 && NPCKBD == 0 */ 1030 1031 void 1032 cpu_startup() 1033 { 1034 register unsigned i; 1035 int base, residual; 1036 vaddr_t minaddr, maxaddr; 1037 vsize_t size; 1038 #if defined(DEBUG) 1039 extern int pmapdebug; 1040 int opmapdebug = pmapdebug; 1041 1042 pmapdebug = 0; 1043 #endif 1044 1045 /* 1046 * Good {morning,afternoon,evening,night}. 1047 */ 1048 printf(version); 1049 identifycpu(); 1050 printf("real mem = %lu (%lu reserved for PROM, %lu used by NetBSD)\n", 1051 ((psize_t) totalphysmem << (psize_t) PAGE_SHIFT), 1052 ptoa(resvmem), ptoa(physmem)); 1053 if (unusedmem) 1054 printf("WARNING: unused memory = %d bytes\n", ctob(unusedmem)); 1055 if (unknownmem) 1056 printf("WARNING: %d bytes of memory with unknown purpose\n", 1057 ctob(unknownmem)); 1058 1059 /* 1060 * Allocate virtual address space for file I/O buffers. 1061 * Note they are different than the array of headers, 'buf', 1062 * and usually occupy more virtual memory than physical. 1063 */ 1064 size = MAXBSIZE * nbuf; 1065 #if defined(UVM) 1066 if (uvm_map(kernel_map, (vaddr_t *) &buffers, round_page(size), 1067 NULL, UVM_UNKNOWN_OFFSET, 1068 UVM_MAPFLAG(UVM_PROT_NONE, UVM_PROT_NONE, UVM_INH_NONE, 1069 UVM_ADV_NORMAL, 0)) != KERN_SUCCESS) 1070 panic("startup: cannot allocate VM for buffers"); 1071 #else 1072 buffer_map = kmem_suballoc(kernel_map, (vaddr_t *)&buffers, 1073 &maxaddr, size, TRUE); 1074 minaddr = (vaddr_t)buffers; 1075 if (vm_map_find(buffer_map, vm_object_allocate(size), (vaddr_t)0, 1076 &minaddr, size, FALSE) != KERN_SUCCESS) 1077 panic("startup: cannot allocate buffers"); 1078 #endif /* UVM */ 1079 base = bufpages / nbuf; 1080 residual = bufpages % nbuf; 1081 for (i = 0; i < nbuf; i++) { 1082 #if defined(UVM) 1083 vsize_t curbufsize; 1084 vaddr_t curbuf; 1085 struct vm_page *pg; 1086 1087 /* 1088 * Each buffer has MAXBSIZE bytes of VM space allocated. Of 1089 * that MAXBSIZE space, we allocate and map (base+1) pages 1090 * for the first "residual" buffers, and then we allocate 1091 * "base" pages for the rest. 1092 */ 1093 curbuf = (vaddr_t) buffers + (i * MAXBSIZE); 1094 curbufsize = CLBYTES * ((i < residual) ? (base+1) : base); 1095 1096 while (curbufsize) { 1097 pg = uvm_pagealloc(NULL, 0, NULL); 1098 if (pg == NULL) 1099 panic("cpu_startup: not enough memory for " 1100 "buffer cache"); 1101 #if defined(PMAP_NEW) 1102 pmap_kenter_pgs(curbuf, &pg, 1); 1103 #else 1104 pmap_enter(kernel_map->pmap, curbuf, 1105 VM_PAGE_TO_PHYS(pg), VM_PROT_ALL, TRUE); 1106 #endif 1107 curbuf += PAGE_SIZE; 1108 curbufsize -= PAGE_SIZE; 1109 } 1110 #else /* ! UVM */ 1111 vsize_t curbufsize; 1112 vaddr_t curbuf; 1113 1114 /* 1115 * First <residual> buffers get (base+1) physical pages 1116 * allocated for them. The rest get (base) physical pages. 1117 * 1118 * The rest of each buffer occupies virtual space, 1119 * but has no physical memory allocated for it. 1120 */ 1121 curbuf = (vaddr_t)buffers + i * MAXBSIZE; 1122 curbufsize = CLBYTES * (i < residual ? base+1 : base); 1123 vm_map_pageable(buffer_map, curbuf, curbuf+curbufsize, FALSE); 1124 vm_map_simplify(buffer_map, curbuf); 1125 #endif /* UVM */ 1126 } 1127 /* 1128 * Allocate a submap for exec arguments. This map effectively 1129 * limits the number of processes exec'ing at any time. 1130 */ 1131 #if defined(UVM) 1132 exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 1133 16 * NCARGS, TRUE, FALSE, NULL); 1134 #else 1135 exec_map = kmem_suballoc(kernel_map, &minaddr, &maxaddr, 1136 16 * NCARGS, TRUE); 1137 #endif 1138 1139 /* 1140 * Allocate a submap for physio 1141 */ 1142 #if defined(UVM) 1143 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 1144 VM_PHYS_SIZE, TRUE, FALSE, NULL); 1145 #else 1146 phys_map = kmem_suballoc(kernel_map, &minaddr, &maxaddr, 1147 VM_PHYS_SIZE, TRUE); 1148 #endif 1149 1150 /* 1151 * Finally, allocate mbuf cluster submap. 1152 */ 1153 #if defined(UVM) 1154 mb_map = uvm_km_suballoc(kernel_map, (vaddr_t *)&mbutl, &maxaddr, 1155 VM_MBUF_SIZE, FALSE, FALSE, NULL); 1156 #else 1157 mb_map = kmem_suballoc(kernel_map, (vaddr_t *)&mbutl, &maxaddr, 1158 VM_MBUF_SIZE, FALSE); 1159 #endif 1160 /* 1161 * Initialize callouts 1162 */ 1163 callfree = callout; 1164 for (i = 1; i < ncallout; i++) 1165 callout[i-1].c_next = &callout[i]; 1166 callout[i-1].c_next = NULL; 1167 1168 #if defined(DEBUG) 1169 pmapdebug = opmapdebug; 1170 #endif 1171 #if defined(UVM) 1172 printf("avail mem = %ld\n", (long)ptoa(uvmexp.free)); 1173 #else 1174 printf("avail mem = %ld\n", (long)ptoa(cnt.v_free_count)); 1175 #endif 1176 #if 0 1177 { 1178 extern u_long pmap_pages_stolen; 1179 printf("stolen memory for VM structures = %ld bytes\n", 1180 pmap_pages_stolen * PAGE_SIZE); 1181 } 1182 #endif 1183 printf("using %ld buffers containing %ld bytes of memory\n", 1184 (long)nbuf, (long)(bufpages * CLBYTES)); 1185 1186 /* 1187 * Set up buffers, so they can be used to read disk labels. 1188 */ 1189 bufinit(); 1190 1191 /* 1192 * Set up the HWPCB so that it's safe to configure secondary 1193 * CPUs. 1194 */ 1195 hwrpb_primary_init(); 1196 1197 /* 1198 * Configure the system. 1199 */ 1200 configure(); 1201 } 1202 1203 /* 1204 * Retrieve the platform name from the DSR. 1205 */ 1206 const char * 1207 alpha_dsr_sysname() 1208 { 1209 struct dsrdb *dsr; 1210 const char *sysname; 1211 1212 /* 1213 * DSR does not exist on early HWRPB versions. 1214 */ 1215 if (hwrpb->rpb_version < HWRPB_DSRDB_MINVERS) 1216 return (NULL); 1217 1218 dsr = (struct dsrdb *)(((caddr_t)hwrpb) + hwrpb->rpb_dsrdb_off); 1219 sysname = (const char *)((caddr_t)dsr + (dsr->dsr_sysname_off + 1220 sizeof(u_int64_t))); 1221 return (sysname); 1222 } 1223 1224 /* 1225 * Lookup the system specified system variation in the provided table, 1226 * returning the model string on match. 1227 */ 1228 const char * 1229 alpha_variation_name(variation, avtp) 1230 u_int64_t variation; 1231 const struct alpha_variation_table *avtp; 1232 { 1233 int i; 1234 1235 for (i = 0; avtp[i].avt_model != NULL; i++) 1236 if (avtp[i].avt_variation == variation) 1237 return (avtp[i].avt_model); 1238 return (NULL); 1239 } 1240 1241 /* 1242 * Generate a default platform name based for unknown system variations. 1243 */ 1244 const char * 1245 alpha_unknown_sysname() 1246 { 1247 static char s[128]; /* safe size */ 1248 1249 sprintf(s, "%s family, unknown model variation 0x%lx", 1250 platform.family, hwrpb->rpb_variation & SV_ST_MASK); 1251 return ((const char *)s); 1252 } 1253 1254 void 1255 identifycpu() 1256 { 1257 1258 /* 1259 * print out CPU identification information. 1260 */ 1261 printf("%s, %ldMHz\n", cpu_model, 1262 hwrpb->rpb_cc_freq / 1000000); /* XXX true for 21164? */ 1263 printf("%ld byte page size, %d processor%s.\n", 1264 hwrpb->rpb_page_size, ncpus, ncpus == 1 ? "" : "s"); 1265 #if 0 1266 /* this isn't defined for any systems that we run on? */ 1267 printf("serial number 0x%lx 0x%lx\n", 1268 ((long *)hwrpb->rpb_ssn)[0], ((long *)hwrpb->rpb_ssn)[1]); 1269 1270 /* and these aren't particularly useful! */ 1271 printf("variation: 0x%lx, revision 0x%lx\n", 1272 hwrpb->rpb_variation, *(long *)hwrpb->rpb_revision); 1273 #endif 1274 } 1275 1276 int waittime = -1; 1277 struct pcb dumppcb; 1278 1279 void 1280 cpu_reboot(howto, bootstr) 1281 int howto; 1282 char *bootstr; 1283 { 1284 extern int cold; 1285 #if defined(MULTIPROCESSOR) 1286 #if 0 /* XXX See below. */ 1287 u_long cpu_id; 1288 #endif 1289 #endif 1290 1291 #if defined(MULTIPROCESSOR) 1292 /* We must be running on the primary CPU. */ 1293 if (alpha_pal_whami() != hwrpb->rpb_primary_cpu_id) 1294 panic("cpu_reboot: not on primary CPU!"); 1295 #endif 1296 1297 /* If system is cold, just halt. */ 1298 if (cold) { 1299 howto |= RB_HALT; 1300 goto haltsys; 1301 } 1302 1303 /* If "always halt" was specified as a boot flag, obey. */ 1304 if ((boothowto & RB_HALT) != 0) 1305 howto |= RB_HALT; 1306 1307 boothowto = howto; 1308 if ((howto & RB_NOSYNC) == 0 && waittime < 0) { 1309 waittime = 0; 1310 vfs_shutdown(); 1311 /* 1312 * If we've been adjusting the clock, the todr 1313 * will be out of synch; adjust it now. 1314 */ 1315 resettodr(); 1316 } 1317 1318 /* Disable interrupts. */ 1319 splhigh(); 1320 1321 /* If rebooting and a dump is requested do it. */ 1322 #if 0 1323 if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP) 1324 #else 1325 if (howto & RB_DUMP) 1326 #endif 1327 dumpsys(); 1328 1329 haltsys: 1330 1331 /* run any shutdown hooks */ 1332 doshutdownhooks(); 1333 1334 #if defined(MULTIPROCESSOR) 1335 #if 0 /* XXX doesn't work when called from here?! */ 1336 /* Kill off any secondary CPUs. */ 1337 for (cpu_id = 0; cpu_id < hwrpb->rpb_pcs_cnt; cpu_id++) { 1338 if (cpu_id == hwrpb->rpb_primary_cpu_id || 1339 cpus[cpu_id] == NULL) 1340 continue; 1341 cpu_halt_secondary(cpu_id); 1342 } 1343 #endif 1344 #endif 1345 1346 #ifdef BOOTKEY 1347 printf("hit any key to %s...\n", howto & RB_HALT ? "halt" : "reboot"); 1348 cnpollc(1); /* for proper keyboard command handling */ 1349 cngetc(); 1350 cnpollc(0); 1351 printf("\n"); 1352 #endif 1353 1354 /* Finally, powerdown/halt/reboot the system. */ 1355 if ((howto && RB_POWERDOWN) == RB_POWERDOWN && 1356 platform.powerdown != NULL) { 1357 (*platform.powerdown)(); 1358 printf("WARNING: powerdown failed!\n"); 1359 } 1360 printf("%s\n\n", howto & RB_HALT ? "halted." : "rebooting..."); 1361 prom_halt(howto & RB_HALT); 1362 /*NOTREACHED*/ 1363 } 1364 1365 /* 1366 * These variables are needed by /sbin/savecore 1367 */ 1368 u_long dumpmag = 0x8fca0101; /* magic number */ 1369 int dumpsize = 0; /* pages */ 1370 long dumplo = 0; /* blocks */ 1371 1372 /* 1373 * cpu_dumpsize: calculate size of machine-dependent kernel core dump headers. 1374 */ 1375 int 1376 cpu_dumpsize() 1377 { 1378 int size; 1379 1380 size = ALIGN(sizeof(kcore_seg_t)) + ALIGN(sizeof(cpu_kcore_hdr_t)) + 1381 ALIGN(mem_cluster_cnt * sizeof(phys_ram_seg_t)); 1382 if (roundup(size, dbtob(1)) != dbtob(1)) 1383 return -1; 1384 1385 return (1); 1386 } 1387 1388 /* 1389 * cpu_dump_mempagecnt: calculate size of RAM (in pages) to be dumped. 1390 */ 1391 u_long 1392 cpu_dump_mempagecnt() 1393 { 1394 u_long i, n; 1395 1396 n = 0; 1397 for (i = 0; i < mem_cluster_cnt; i++) 1398 n += atop(mem_clusters[i].size); 1399 return (n); 1400 } 1401 1402 /* 1403 * cpu_dump: dump machine-dependent kernel core dump headers. 1404 */ 1405 int 1406 cpu_dump() 1407 { 1408 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1409 char buf[dbtob(1)]; 1410 kcore_seg_t *segp; 1411 cpu_kcore_hdr_t *cpuhdrp; 1412 phys_ram_seg_t *memsegp; 1413 int i; 1414 1415 dump = bdevsw[major(dumpdev)].d_dump; 1416 1417 bzero(buf, sizeof buf); 1418 segp = (kcore_seg_t *)buf; 1419 cpuhdrp = (cpu_kcore_hdr_t *)&buf[ALIGN(sizeof(*segp))]; 1420 memsegp = (phys_ram_seg_t *)&buf[ ALIGN(sizeof(*segp)) + 1421 ALIGN(sizeof(*cpuhdrp))]; 1422 1423 /* 1424 * Generate a segment header. 1425 */ 1426 CORE_SETMAGIC(*segp, KCORE_MAGIC, MID_MACHINE, CORE_CPU); 1427 segp->c_size = dbtob(1) - ALIGN(sizeof(*segp)); 1428 1429 /* 1430 * Add the machine-dependent header info. 1431 */ 1432 cpuhdrp->lev1map_pa = ALPHA_K0SEG_TO_PHYS((vaddr_t)kernel_lev1map); 1433 cpuhdrp->page_size = PAGE_SIZE; 1434 cpuhdrp->nmemsegs = mem_cluster_cnt; 1435 1436 /* 1437 * Fill in the memory segment descriptors. 1438 */ 1439 for (i = 0; i < mem_cluster_cnt; i++) { 1440 memsegp[i].start = mem_clusters[i].start; 1441 memsegp[i].size = mem_clusters[i].size & ~PAGE_MASK; 1442 } 1443 1444 return (dump(dumpdev, dumplo, (caddr_t)buf, dbtob(1))); 1445 } 1446 1447 /* 1448 * This is called by main to set dumplo and dumpsize. 1449 * Dumps always skip the first CLBYTES of disk space 1450 * in case there might be a disk label stored there. 1451 * If there is extra space, put dump at the end to 1452 * reduce the chance that swapping trashes it. 1453 */ 1454 void 1455 cpu_dumpconf() 1456 { 1457 int nblks, dumpblks; /* size of dump area */ 1458 int maj; 1459 1460 if (dumpdev == NODEV) 1461 goto bad; 1462 maj = major(dumpdev); 1463 if (maj < 0 || maj >= nblkdev) 1464 panic("dumpconf: bad dumpdev=0x%x", dumpdev); 1465 if (bdevsw[maj].d_psize == NULL) 1466 goto bad; 1467 nblks = (*bdevsw[maj].d_psize)(dumpdev); 1468 if (nblks <= ctod(1)) 1469 goto bad; 1470 1471 dumpblks = cpu_dumpsize(); 1472 if (dumpblks < 0) 1473 goto bad; 1474 dumpblks += ctod(cpu_dump_mempagecnt()); 1475 1476 /* If dump won't fit (incl. room for possible label), punt. */ 1477 if (dumpblks > (nblks - ctod(1))) 1478 goto bad; 1479 1480 /* Put dump at end of partition */ 1481 dumplo = nblks - dumpblks; 1482 1483 /* dumpsize is in page units, and doesn't include headers. */ 1484 dumpsize = cpu_dump_mempagecnt(); 1485 return; 1486 1487 bad: 1488 dumpsize = 0; 1489 return; 1490 } 1491 1492 /* 1493 * Dump the kernel's image to the swap partition. 1494 */ 1495 #define BYTES_PER_DUMP NBPG 1496 1497 void 1498 dumpsys() 1499 { 1500 u_long totalbytesleft, bytes, i, n, memcl; 1501 u_long maddr; 1502 int psize; 1503 daddr_t blkno; 1504 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1505 int error; 1506 1507 /* Save registers. */ 1508 savectx(&dumppcb); 1509 1510 msgbufenabled = 0; /* don't record dump msgs in msgbuf */ 1511 if (dumpdev == NODEV) 1512 return; 1513 1514 /* 1515 * For dumps during autoconfiguration, 1516 * if dump device has already configured... 1517 */ 1518 if (dumpsize == 0) 1519 cpu_dumpconf(); 1520 if (dumplo <= 0) { 1521 printf("\ndump to dev %u,%u not possible\n", major(dumpdev), 1522 minor(dumpdev)); 1523 return; 1524 } 1525 printf("\ndumping to dev %u,%u offset %ld\n", major(dumpdev), 1526 minor(dumpdev), dumplo); 1527 1528 psize = (*bdevsw[major(dumpdev)].d_psize)(dumpdev); 1529 printf("dump "); 1530 if (psize == -1) { 1531 printf("area unavailable\n"); 1532 return; 1533 } 1534 1535 /* XXX should purge all outstanding keystrokes. */ 1536 1537 if ((error = cpu_dump()) != 0) 1538 goto err; 1539 1540 totalbytesleft = ptoa(cpu_dump_mempagecnt()); 1541 blkno = dumplo + cpu_dumpsize(); 1542 dump = bdevsw[major(dumpdev)].d_dump; 1543 error = 0; 1544 1545 for (memcl = 0; memcl < mem_cluster_cnt; memcl++) { 1546 maddr = mem_clusters[memcl].start; 1547 bytes = mem_clusters[memcl].size & ~PAGE_MASK; 1548 1549 for (i = 0; i < bytes; i += n, totalbytesleft -= n) { 1550 1551 /* Print out how many MBs we to go. */ 1552 if ((totalbytesleft % (1024*1024)) == 0) 1553 printf("%d ", totalbytesleft / (1024 * 1024)); 1554 1555 /* Limit size for next transfer. */ 1556 n = bytes - i; 1557 if (n > BYTES_PER_DUMP) 1558 n = BYTES_PER_DUMP; 1559 1560 error = (*dump)(dumpdev, blkno, 1561 (caddr_t)ALPHA_PHYS_TO_K0SEG(maddr), n); 1562 if (error) 1563 goto err; 1564 maddr += n; 1565 blkno += btodb(n); /* XXX? */ 1566 1567 /* XXX should look for keystrokes, to cancel. */ 1568 } 1569 } 1570 1571 err: 1572 switch (error) { 1573 1574 case ENXIO: 1575 printf("device bad\n"); 1576 break; 1577 1578 case EFAULT: 1579 printf("device not ready\n"); 1580 break; 1581 1582 case EINVAL: 1583 printf("area improper\n"); 1584 break; 1585 1586 case EIO: 1587 printf("i/o error\n"); 1588 break; 1589 1590 case EINTR: 1591 printf("aborted from console\n"); 1592 break; 1593 1594 case 0: 1595 printf("succeeded\n"); 1596 break; 1597 1598 default: 1599 printf("error %d\n", error); 1600 break; 1601 } 1602 printf("\n\n"); 1603 delay(1000); 1604 } 1605 1606 void 1607 frametoreg(framep, regp) 1608 struct trapframe *framep; 1609 struct reg *regp; 1610 { 1611 1612 regp->r_regs[R_V0] = framep->tf_regs[FRAME_V0]; 1613 regp->r_regs[R_T0] = framep->tf_regs[FRAME_T0]; 1614 regp->r_regs[R_T1] = framep->tf_regs[FRAME_T1]; 1615 regp->r_regs[R_T2] = framep->tf_regs[FRAME_T2]; 1616 regp->r_regs[R_T3] = framep->tf_regs[FRAME_T3]; 1617 regp->r_regs[R_T4] = framep->tf_regs[FRAME_T4]; 1618 regp->r_regs[R_T5] = framep->tf_regs[FRAME_T5]; 1619 regp->r_regs[R_T6] = framep->tf_regs[FRAME_T6]; 1620 regp->r_regs[R_T7] = framep->tf_regs[FRAME_T7]; 1621 regp->r_regs[R_S0] = framep->tf_regs[FRAME_S0]; 1622 regp->r_regs[R_S1] = framep->tf_regs[FRAME_S1]; 1623 regp->r_regs[R_S2] = framep->tf_regs[FRAME_S2]; 1624 regp->r_regs[R_S3] = framep->tf_regs[FRAME_S3]; 1625 regp->r_regs[R_S4] = framep->tf_regs[FRAME_S4]; 1626 regp->r_regs[R_S5] = framep->tf_regs[FRAME_S5]; 1627 regp->r_regs[R_S6] = framep->tf_regs[FRAME_S6]; 1628 regp->r_regs[R_A0] = framep->tf_regs[FRAME_A0]; 1629 regp->r_regs[R_A1] = framep->tf_regs[FRAME_A1]; 1630 regp->r_regs[R_A2] = framep->tf_regs[FRAME_A2]; 1631 regp->r_regs[R_A3] = framep->tf_regs[FRAME_A3]; 1632 regp->r_regs[R_A4] = framep->tf_regs[FRAME_A4]; 1633 regp->r_regs[R_A5] = framep->tf_regs[FRAME_A5]; 1634 regp->r_regs[R_T8] = framep->tf_regs[FRAME_T8]; 1635 regp->r_regs[R_T9] = framep->tf_regs[FRAME_T9]; 1636 regp->r_regs[R_T10] = framep->tf_regs[FRAME_T10]; 1637 regp->r_regs[R_T11] = framep->tf_regs[FRAME_T11]; 1638 regp->r_regs[R_RA] = framep->tf_regs[FRAME_RA]; 1639 regp->r_regs[R_T12] = framep->tf_regs[FRAME_T12]; 1640 regp->r_regs[R_AT] = framep->tf_regs[FRAME_AT]; 1641 regp->r_regs[R_GP] = framep->tf_regs[FRAME_GP]; 1642 /* regp->r_regs[R_SP] = framep->tf_regs[FRAME_SP]; XXX */ 1643 regp->r_regs[R_ZERO] = 0; 1644 } 1645 1646 void 1647 regtoframe(regp, framep) 1648 struct reg *regp; 1649 struct trapframe *framep; 1650 { 1651 1652 framep->tf_regs[FRAME_V0] = regp->r_regs[R_V0]; 1653 framep->tf_regs[FRAME_T0] = regp->r_regs[R_T0]; 1654 framep->tf_regs[FRAME_T1] = regp->r_regs[R_T1]; 1655 framep->tf_regs[FRAME_T2] = regp->r_regs[R_T2]; 1656 framep->tf_regs[FRAME_T3] = regp->r_regs[R_T3]; 1657 framep->tf_regs[FRAME_T4] = regp->r_regs[R_T4]; 1658 framep->tf_regs[FRAME_T5] = regp->r_regs[R_T5]; 1659 framep->tf_regs[FRAME_T6] = regp->r_regs[R_T6]; 1660 framep->tf_regs[FRAME_T7] = regp->r_regs[R_T7]; 1661 framep->tf_regs[FRAME_S0] = regp->r_regs[R_S0]; 1662 framep->tf_regs[FRAME_S1] = regp->r_regs[R_S1]; 1663 framep->tf_regs[FRAME_S2] = regp->r_regs[R_S2]; 1664 framep->tf_regs[FRAME_S3] = regp->r_regs[R_S3]; 1665 framep->tf_regs[FRAME_S4] = regp->r_regs[R_S4]; 1666 framep->tf_regs[FRAME_S5] = regp->r_regs[R_S5]; 1667 framep->tf_regs[FRAME_S6] = regp->r_regs[R_S6]; 1668 framep->tf_regs[FRAME_A0] = regp->r_regs[R_A0]; 1669 framep->tf_regs[FRAME_A1] = regp->r_regs[R_A1]; 1670 framep->tf_regs[FRAME_A2] = regp->r_regs[R_A2]; 1671 framep->tf_regs[FRAME_A3] = regp->r_regs[R_A3]; 1672 framep->tf_regs[FRAME_A4] = regp->r_regs[R_A4]; 1673 framep->tf_regs[FRAME_A5] = regp->r_regs[R_A5]; 1674 framep->tf_regs[FRAME_T8] = regp->r_regs[R_T8]; 1675 framep->tf_regs[FRAME_T9] = regp->r_regs[R_T9]; 1676 framep->tf_regs[FRAME_T10] = regp->r_regs[R_T10]; 1677 framep->tf_regs[FRAME_T11] = regp->r_regs[R_T11]; 1678 framep->tf_regs[FRAME_RA] = regp->r_regs[R_RA]; 1679 framep->tf_regs[FRAME_T12] = regp->r_regs[R_T12]; 1680 framep->tf_regs[FRAME_AT] = regp->r_regs[R_AT]; 1681 framep->tf_regs[FRAME_GP] = regp->r_regs[R_GP]; 1682 /* framep->tf_regs[FRAME_SP] = regp->r_regs[R_SP]; XXX */ 1683 /* ??? = regp->r_regs[R_ZERO]; */ 1684 } 1685 1686 void 1687 printregs(regp) 1688 struct reg *regp; 1689 { 1690 int i; 1691 1692 for (i = 0; i < 32; i++) 1693 printf("R%d:\t0x%016lx%s", i, regp->r_regs[i], 1694 i & 1 ? "\n" : "\t"); 1695 } 1696 1697 void 1698 regdump(framep) 1699 struct trapframe *framep; 1700 { 1701 struct reg reg; 1702 1703 frametoreg(framep, ®); 1704 reg.r_regs[R_SP] = alpha_pal_rdusp(); 1705 1706 printf("REGISTERS:\n"); 1707 printregs(®); 1708 } 1709 1710 #ifdef DEBUG 1711 int sigdebug = 0; 1712 int sigpid = 0; 1713 #define SDB_FOLLOW 0x01 1714 #define SDB_KSTACK 0x02 1715 #endif 1716 1717 /* 1718 * Send an interrupt to process. 1719 */ 1720 void 1721 sendsig(catcher, sig, mask, code) 1722 sig_t catcher; 1723 int sig; 1724 sigset_t *mask; 1725 u_long code; 1726 { 1727 struct proc *p = curproc; 1728 struct sigcontext *scp, ksc; 1729 struct trapframe *frame; 1730 struct sigacts *psp = p->p_sigacts; 1731 int onstack, fsize, rndfsize; 1732 extern struct proc *fpcurproc; 1733 1734 frame = p->p_md.md_tf; 1735 1736 /* Do we need to jump onto the signal stack? */ 1737 onstack = 1738 (psp->ps_sigstk.ss_flags & (SS_DISABLE | SS_ONSTACK)) == 0 && 1739 (psp->ps_sigact[sig].sa_flags & SA_ONSTACK) != 0; 1740 1741 /* Allocate space for the signal handler context. */ 1742 fsize = sizeof(ksc); 1743 rndfsize = ((fsize + 15) / 16) * 16; 1744 1745 if (onstack) 1746 scp = (struct sigcontext *)((caddr_t)psp->ps_sigstk.ss_sp + 1747 psp->ps_sigstk.ss_size); 1748 else 1749 scp = (struct sigcontext *)(alpha_pal_rdusp()); 1750 scp = (struct sigcontext *)((caddr_t)scp - rndfsize); 1751 1752 #ifdef DEBUG 1753 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1754 printf("sendsig(%d): sig %d ssp %p usp %p\n", p->p_pid, 1755 sig, &onstack, scp); 1756 #endif 1757 1758 /* Build stack frame for signal trampoline. */ 1759 ksc.sc_pc = frame->tf_regs[FRAME_PC]; 1760 ksc.sc_ps = frame->tf_regs[FRAME_PS]; 1761 1762 /* Save register context. */ 1763 frametoreg(frame, (struct reg *)ksc.sc_regs); 1764 ksc.sc_regs[R_ZERO] = 0xACEDBADE; /* magic number */ 1765 ksc.sc_regs[R_SP] = alpha_pal_rdusp(); 1766 1767 /* save the floating-point state, if necessary, then copy it. */ 1768 if (p == fpcurproc) { 1769 alpha_pal_wrfen(1); 1770 savefpstate(&p->p_addr->u_pcb.pcb_fp); 1771 alpha_pal_wrfen(0); 1772 fpcurproc = NULL; 1773 } 1774 ksc.sc_ownedfp = p->p_md.md_flags & MDP_FPUSED; 1775 bcopy(&p->p_addr->u_pcb.pcb_fp, (struct fpreg *)ksc.sc_fpregs, 1776 sizeof(struct fpreg)); 1777 ksc.sc_fp_control = 0; /* XXX ? */ 1778 bzero(ksc.sc_reserved, sizeof ksc.sc_reserved); /* XXX */ 1779 bzero(ksc.sc_xxx, sizeof ksc.sc_xxx); /* XXX */ 1780 1781 /* Save signal stack. */ 1782 ksc.sc_onstack = psp->ps_sigstk.ss_flags & SS_ONSTACK; 1783 1784 /* Save signal mask. */ 1785 ksc.sc_mask = *mask; 1786 1787 #ifdef COMPAT_13 1788 /* 1789 * XXX We always have to save an old style signal mask because 1790 * XXX we might be delivering a signal to a process which will 1791 * XXX escape from the signal in a non-standard way and invoke 1792 * XXX sigreturn() directly. 1793 */ 1794 { 1795 /* Note: it's a long in the stack frame. */ 1796 sigset13_t mask13; 1797 1798 native_sigset_to_sigset13(mask, &mask13); 1799 ksc.__sc_mask13 = mask13; 1800 } 1801 #endif 1802 1803 #ifdef COMPAT_OSF1 1804 /* 1805 * XXX Create an OSF/1-style sigcontext and associated goo. 1806 */ 1807 #endif 1808 1809 if (copyout(&ksc, (caddr_t)scp, fsize) != 0) { 1810 /* 1811 * Process has trashed its stack; give it an illegal 1812 * instruction to halt it in its tracks. 1813 */ 1814 #ifdef DEBUG 1815 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1816 printf("sendsig(%d): copyout failed on sig %d\n", 1817 p->p_pid, sig); 1818 #endif 1819 sigexit(p, SIGILL); 1820 /* NOTREACHED */ 1821 } 1822 #ifdef DEBUG 1823 if (sigdebug & SDB_FOLLOW) 1824 printf("sendsig(%d): sig %d scp %p code %lx\n", p->p_pid, sig, 1825 scp, code); 1826 #endif 1827 1828 /* Set up the registers to return to sigcode. */ 1829 frame->tf_regs[FRAME_PC] = (u_int64_t)psp->ps_sigcode; 1830 frame->tf_regs[FRAME_A0] = sig; 1831 frame->tf_regs[FRAME_A1] = code; 1832 frame->tf_regs[FRAME_A2] = (u_int64_t)scp; 1833 frame->tf_regs[FRAME_T12] = (u_int64_t)catcher; /* t12 is pv */ 1834 alpha_pal_wrusp((unsigned long)scp); 1835 1836 /* Remember that we're now on the signal stack. */ 1837 if (onstack) 1838 psp->ps_sigstk.ss_flags |= SS_ONSTACK; 1839 1840 #ifdef DEBUG 1841 if (sigdebug & SDB_FOLLOW) 1842 printf("sendsig(%d): pc %lx, catcher %lx\n", p->p_pid, 1843 frame->tf_regs[FRAME_PC], frame->tf_regs[FRAME_A3]); 1844 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1845 printf("sendsig(%d): sig %d returns\n", 1846 p->p_pid, sig); 1847 #endif 1848 } 1849 1850 /* 1851 * System call to cleanup state after a signal 1852 * has been taken. Reset signal mask and 1853 * stack state from context left by sendsig (above). 1854 * Return to previous pc and psl as specified by 1855 * context left by sendsig. Check carefully to 1856 * make sure that the user has not modified the 1857 * psl to gain improper priviledges or to cause 1858 * a machine fault. 1859 */ 1860 /* ARGSUSED */ 1861 int 1862 sys___sigreturn14(p, v, retval) 1863 struct proc *p; 1864 void *v; 1865 register_t *retval; 1866 { 1867 struct sys___sigreturn14_args /* { 1868 syscallarg(struct sigcontext *) sigcntxp; 1869 } */ *uap = v; 1870 struct sigcontext *scp, ksc; 1871 extern struct proc *fpcurproc; 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 extern struct proc *fpcurproc; 1988 #ifdef DEBUG 1989 int i; 1990 #endif 1991 1992 #ifdef DEBUG 1993 /* 1994 * Crash and dump, if the user requested it. 1995 */ 1996 if (boothowto & RB_DUMP) 1997 panic("crash requested by boot flags"); 1998 #endif 1999 2000 #ifdef DEBUG 2001 for (i = 0; i < FRAME_SIZE; i++) 2002 tfp->tf_regs[i] = 0xbabefacedeadbeef; 2003 #else 2004 bzero(tfp->tf_regs, FRAME_SIZE * sizeof tfp->tf_regs[0]); 2005 #endif 2006 bzero(&p->p_addr->u_pcb.pcb_fp, sizeof p->p_addr->u_pcb.pcb_fp); 2007 #define FP_RN 2 /* XXX */ 2008 p->p_addr->u_pcb.pcb_fp.fpr_cr = (long)FP_RN << 58; 2009 alpha_pal_wrusp(stack); 2010 tfp->tf_regs[FRAME_PS] = ALPHA_PSL_USERSET; 2011 tfp->tf_regs[FRAME_PC] = pack->ep_entry & ~3; 2012 2013 tfp->tf_regs[FRAME_A0] = stack; /* a0 = sp */ 2014 tfp->tf_regs[FRAME_A1] = 0; /* a1 = rtld cleanup */ 2015 tfp->tf_regs[FRAME_A2] = 0; /* a2 = rtld object */ 2016 tfp->tf_regs[FRAME_A3] = (u_int64_t)PS_STRINGS; /* a3 = ps_strings */ 2017 tfp->tf_regs[FRAME_T12] = tfp->tf_regs[FRAME_PC]; /* a.k.a. PV */ 2018 2019 p->p_md.md_flags &= ~MDP_FPUSED; 2020 if (fpcurproc == p) 2021 fpcurproc = NULL; 2022 } 2023 2024 void 2025 netintr() 2026 { 2027 int n, s; 2028 2029 s = splhigh(); 2030 n = netisr; 2031 netisr = 0; 2032 splx(s); 2033 2034 #define DONETISR(bit, fn) \ 2035 do { \ 2036 if (n & (1 << (bit))) \ 2037 fn; \ 2038 } while (0) 2039 2040 #ifdef INET 2041 #if NARP > 0 2042 DONETISR(NETISR_ARP, arpintr()); 2043 #endif 2044 DONETISR(NETISR_IP, ipintr()); 2045 #endif 2046 #ifdef NETATALK 2047 DONETISR(NETISR_ATALK, atintr()); 2048 #endif 2049 #ifdef NS 2050 DONETISR(NETISR_NS, nsintr()); 2051 #endif 2052 #ifdef ISO 2053 DONETISR(NETISR_ISO, clnlintr()); 2054 #endif 2055 #ifdef CCITT 2056 DONETISR(NETISR_CCITT, ccittintr()); 2057 #endif 2058 #ifdef NATM 2059 DONETISR(NETISR_NATM, natmintr()); 2060 #endif 2061 #if NPPP > 1 2062 DONETISR(NETISR_PPP, pppintr()); 2063 #endif 2064 2065 #undef DONETISR 2066 } 2067 2068 void 2069 do_sir() 2070 { 2071 u_int64_t n; 2072 2073 do { 2074 (void)splhigh(); 2075 n = ssir; 2076 ssir = 0; 2077 splsoft(); /* don't recurse through spl0() */ 2078 2079 #if defined(UVM) 2080 #define COUNT_SOFT uvmexp.softs++ 2081 #else 2082 #define COUNT_SOFT cnt.v_soft++ 2083 #endif 2084 2085 #define DO_SIR(bit, fn) \ 2086 do { \ 2087 if (n & (bit)) { \ 2088 COUNT_SOFT; \ 2089 fn; \ 2090 } \ 2091 } while (0) 2092 2093 DO_SIR(SIR_NET, netintr()); 2094 DO_SIR(SIR_CLOCK, softclock()); 2095 #if NCOM > 0 2096 DO_SIR(SIR_SERIAL, comsoft()); 2097 #endif 2098 2099 #undef COUNT_SOFT 2100 #undef DO_SIR 2101 } while (ssir != 0); 2102 } 2103 2104 int 2105 spl0() 2106 { 2107 2108 if (ssir) 2109 do_sir(); /* it lowers the IPL itself */ 2110 2111 return (alpha_pal_swpipl(ALPHA_PSL_IPL_0)); 2112 } 2113 2114 /* 2115 * The following primitives manipulate the run queues. _whichqs tells which 2116 * of the 32 queues _qs have processes in them. Setrunqueue puts processes 2117 * into queues, Remrunqueue removes them from queues. The running process is 2118 * on no queue, other processes are on a queue related to p->p_priority, 2119 * divided by 4 actually to shrink the 0-127 range of priorities into the 32 2120 * available queues. 2121 */ 2122 /* 2123 * setrunqueue(p) 2124 * proc *p; 2125 * 2126 * Call should be made at splclock(), and p->p_stat should be SRUN. 2127 */ 2128 2129 void 2130 setrunqueue(p) 2131 struct proc *p; 2132 { 2133 int bit; 2134 2135 /* firewall: p->p_back must be NULL */ 2136 if (p->p_back != NULL) 2137 panic("setrunqueue"); 2138 2139 bit = p->p_priority >> 2; 2140 whichqs |= (1 << bit); 2141 p->p_forw = (struct proc *)&qs[bit]; 2142 p->p_back = qs[bit].ph_rlink; 2143 p->p_back->p_forw = p; 2144 qs[bit].ph_rlink = p; 2145 } 2146 2147 /* 2148 * remrunqueue(p) 2149 * 2150 * Call should be made at splclock(). 2151 */ 2152 void 2153 remrunqueue(p) 2154 struct proc *p; 2155 { 2156 int bit; 2157 2158 bit = p->p_priority >> 2; 2159 if ((whichqs & (1 << bit)) == 0) 2160 panic("remrunqueue"); 2161 2162 p->p_back->p_forw = p->p_forw; 2163 p->p_forw->p_back = p->p_back; 2164 p->p_back = NULL; /* for firewall checking. */ 2165 2166 if ((struct proc *)&qs[bit] == qs[bit].ph_link) 2167 whichqs &= ~(1 << bit); 2168 } 2169 2170 /* 2171 * Return the best possible estimate of the time in the timeval 2172 * to which tvp points. Unfortunately, we can't read the hardware registers. 2173 * We guarantee that the time will be greater than the value obtained by a 2174 * previous call. 2175 */ 2176 void 2177 microtime(tvp) 2178 register struct timeval *tvp; 2179 { 2180 int s = splclock(); 2181 static struct timeval lasttime; 2182 2183 *tvp = time; 2184 #ifdef notdef 2185 tvp->tv_usec += clkread(); 2186 while (tvp->tv_usec > 1000000) { 2187 tvp->tv_sec++; 2188 tvp->tv_usec -= 1000000; 2189 } 2190 #endif 2191 if (tvp->tv_sec == lasttime.tv_sec && 2192 tvp->tv_usec <= lasttime.tv_usec && 2193 (tvp->tv_usec = lasttime.tv_usec + 1) > 1000000) { 2194 tvp->tv_sec++; 2195 tvp->tv_usec -= 1000000; 2196 } 2197 lasttime = *tvp; 2198 splx(s); 2199 } 2200 2201 /* 2202 * Wait "n" microseconds. 2203 */ 2204 void 2205 delay(n) 2206 unsigned long n; 2207 { 2208 long N = cycles_per_usec * (n); 2209 2210 while (N > 0) /* XXX */ 2211 N -= 3; /* XXX */ 2212 } 2213 2214 #if defined(COMPAT_OSF1) || 1 /* XXX */ 2215 void cpu_exec_ecoff_setregs __P((struct proc *, struct exec_package *, 2216 u_long)); 2217 2218 void 2219 cpu_exec_ecoff_setregs(p, epp, stack) 2220 struct proc *p; 2221 struct exec_package *epp; 2222 u_long stack; 2223 { 2224 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2225 2226 setregs(p, epp, stack); 2227 p->p_md.md_tf->tf_regs[FRAME_GP] = execp->a.gp_value; 2228 } 2229 2230 /* 2231 * cpu_exec_ecoff_hook(): 2232 * cpu-dependent ECOFF format hook for execve(). 2233 * 2234 * Do any machine-dependent diddling of the exec package when doing ECOFF. 2235 * 2236 */ 2237 int 2238 cpu_exec_ecoff_hook(p, epp) 2239 struct proc *p; 2240 struct exec_package *epp; 2241 { 2242 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2243 extern struct emul emul_netbsd; 2244 #ifdef COMPAT_OSF1 2245 extern struct emul emul_osf1; 2246 #endif 2247 2248 switch (execp->f.f_magic) { 2249 #ifdef COMPAT_OSF1 2250 case ECOFF_MAGIC_ALPHA: 2251 epp->ep_emul = &emul_osf1; 2252 break; 2253 #endif 2254 2255 case ECOFF_MAGIC_NETBSD_ALPHA: 2256 epp->ep_emul = &emul_netbsd; 2257 break; 2258 2259 default: 2260 return ENOEXEC; 2261 } 2262 return 0; 2263 } 2264 #endif 2265 2266 int 2267 alpha_pa_access(pa) 2268 u_long pa; 2269 { 2270 int i; 2271 2272 for (i = 0; i < mem_cluster_cnt; i++) { 2273 if (pa < mem_clusters[i].start) 2274 continue; 2275 if ((pa - mem_clusters[i].start) >= 2276 (mem_clusters[i].size & ~PAGE_MASK)) 2277 continue; 2278 return (mem_clusters[i].size & PAGE_MASK); /* prot */ 2279 } 2280 return (PROT_NONE); 2281 } 2282 2283 /* XXX XXX BEGIN XXX XXX */ 2284 paddr_t alpha_XXX_dmamap_or; /* XXX */ 2285 /* XXX */ 2286 paddr_t /* XXX */ 2287 alpha_XXX_dmamap(v) /* XXX */ 2288 vaddr_t v; /* XXX */ 2289 { /* XXX */ 2290 /* XXX */ 2291 return (vtophys(v) | alpha_XXX_dmamap_or); /* XXX */ 2292 } /* XXX */ 2293 /* XXX XXX END XXX XXX */ 2294 2295 struct mchkinfo * 2296 cpu_mchkinfo() 2297 { 2298 if (mchkinfo_all_cpus == NULL) 2299 return &startup_info; 2300 return mchkinfo_all_cpus + alpha_pal_whami(); 2301 } 2302 2303 #define NSIO_PORT 0x26e /* Hardware enabled option: 0x398 */ 2304 #define NSIO_BASE 0 2305 #define NSIO_INDEX NSIO_BASE 2306 #define NSIO_DATA 1 2307 #define NSIO_SIZE 2 2308 #define NSIO_CFG0 0 2309 #define NSIO_CFG1 1 2310 #define NSIO_CFG2 2 2311 #define NSIO_IDE_ENABLE 0x40 2312 2313 #define NSIO_MB(type) bus_space_barrier(iot, nsio, NSIO_BASE, NSIO_SIZE, (type)) 2314 2315 /* 2316 * DEC uses a chip from NS for junk I/O, but SRM on some platforms 2317 * doesn't enable that section. Do it here if called from a platform- 2318 * specific init routine. 2319 */ 2320 void 2321 enable_nsio_ide(iot) 2322 bus_space_tag_t iot; 2323 { 2324 int cfg0val; 2325 bus_space_handle_t nsio; 2326 2327 if (bus_space_map(iot, NSIO_PORT, NSIO_SIZE, 0, &nsio)) 2328 return; 2329 2330 bus_space_write_1(iot, nsio, NSIO_INDEX, NSIO_CFG0); 2331 NSIO_MB(BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE); 2332 cfg0val = bus_space_read_1(iot, nsio, NSIO_DATA); 2333 2334 cfg0val |= NSIO_IDE_ENABLE; 2335 2336 bus_space_write_1(iot, nsio, NSIO_INDEX, NSIO_CFG0); 2337 NSIO_MB(BUS_SPACE_BARRIER_WRITE); 2338 bus_space_write_1(iot, nsio, NSIO_DATA, cfg0val); 2339 NSIO_MB(BUS_SPACE_BARRIER_WRITE); 2340 bus_space_write_1(iot, nsio, NSIO_DATA, cfg0val); 2341 2342 /* Leave nsio mapped to catch any accidental port space collisions */ 2343 } 2344
Indexes created Tue Sep 30 20:09:53 GMT 2025