machdep.c revision 1.169
1 /* $NetBSD: machdep.c,v 1.169 1999/04/15 22:15:05 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 1999 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_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 1.169 1999/04/15 22:15:05 thorpej Exp $"); 86 87 #include <sys/param.h> 88 #include <sys/systm.h> 89 #include <sys/signalvar.h> 90 #include <sys/kernel.h> 91 #include <sys/map.h> 92 #include <sys/proc.h> 93 #include <sys/buf.h> 94 #include <sys/reboot.h> 95 #include <sys/device.h> 96 #include <sys/file.h> 97 #ifdef REAL_CLISTS 98 #include <sys/clist.h> 99 #endif 100 #include <sys/callout.h> 101 #include <sys/malloc.h> 102 #include <sys/mbuf.h> 103 #include <sys/mman.h> 104 #include <sys/msgbuf.h> 105 #include <sys/ioctl.h> 106 #include <sys/tty.h> 107 #include <sys/user.h> 108 #include <sys/exec.h> 109 #include <sys/exec_ecoff.h> 110 #include <vm/vm.h> 111 #include <sys/sysctl.h> 112 #include <sys/core.h> 113 #include <sys/kcore.h> 114 #include <machine/kcore.h> 115 #ifdef SYSVMSG 116 #include <sys/msg.h> 117 #endif 118 #ifdef SYSVSEM 119 #include <sys/sem.h> 120 #endif 121 #ifdef SYSVSHM 122 #include <sys/shm.h> 123 #endif 124 125 #include <sys/mount.h> 126 #include <sys/syscallargs.h> 127 128 #include <vm/vm_kern.h> 129 130 #include <uvm/uvm_extern.h> 131 132 #include <dev/cons.h> 133 134 #include <machine/autoconf.h> 135 #include <machine/cpu.h> 136 #include <machine/reg.h> 137 #include <machine/rpb.h> 138 #include <machine/prom.h> 139 #include <machine/conf.h> 140 141 #include <alpha/alpha/cpuvar.h> 142 143 #include <net/netisr.h> 144 #include <net/if.h> 145 146 #ifdef INET 147 #include <net/route.h> 148 #include <netinet/in.h> 149 #include <netinet/ip_var.h> 150 #include "arp.h" 151 #if NARP > 0 152 #include <netinet/if_inarp.h> 153 #endif 154 #endif 155 #ifdef NS 156 #include <netns/ns_var.h> 157 #endif 158 #ifdef ISO 159 #include <netiso/iso.h> 160 #include <netiso/clnp.h> 161 #endif 162 #ifdef CCITT 163 #include <netccitt/x25.h> 164 #include <netccitt/pk.h> 165 #include <netccitt/pk_extern.h> 166 #endif 167 #ifdef NATM 168 #include <netnatm/natm.h> 169 #endif 170 #ifdef NETATALK 171 #include <netatalk/at_extern.h> 172 #endif 173 #include "ppp.h" 174 #if NPPP > 0 175 #include <net/ppp_defs.h> 176 #include <net/if_ppp.h> 177 #endif 178 179 #ifdef DDB 180 #include <machine/db_machdep.h> 181 #include <ddb/db_access.h> 182 #include <ddb/db_sym.h> 183 #include <ddb/db_extern.h> 184 #include <ddb/db_interface.h> 185 #endif 186 187 #include <machine/alpha.h> 188 #include <machine/intrcnt.h> 189 190 #include "com.h" 191 #if NCOM > 0 192 extern void comsoft __P((void)); 193 #endif 194 195 vm_map_t exec_map = NULL; 196 vm_map_t mb_map = NULL; 197 vm_map_t phys_map = NULL; 198 199 /* 200 * Declare these as initialized data so we can patch them. 201 */ 202 int nswbuf = 0; 203 #ifdef NBUF 204 int nbuf = NBUF; 205 #else 206 int nbuf = 0; 207 #endif 208 209 #ifndef BUFPAGES 210 #define BUFPAGES 0 211 #endif 212 #ifndef BUFCACHE 213 #define BUFCACHE 10 214 #endif 215 216 int bufpages = BUFPAGES; /* optional hardwired count */ 217 int bufcache = BUFCACHE; /* % of RAM to use for buffer cache */ 218 219 caddr_t msgbufaddr; 220 221 int maxmem; /* max memory per process */ 222 223 int totalphysmem; /* total amount of physical memory in system */ 224 int physmem; /* physical memory used by NetBSD + some rsvd */ 225 int resvmem; /* amount of memory reserved for PROM */ 226 int unusedmem; /* amount of memory for OS that we don't use */ 227 int unknownmem; /* amount of memory with an unknown use */ 228 229 int cputype; /* system type, from the RPB */ 230 231 /* 232 * XXX We need an address to which we can assign things so that they 233 * won't be optimized away because we didn't use the value. 234 */ 235 u_int32_t no_optimize; 236 237 /* the following is used externally (sysctl_hw) */ 238 char machine[] = MACHINE; /* from <machine/param.h> */ 239 char machine_arch[] = MACHINE_ARCH; /* from <machine/param.h> */ 240 char cpu_model[128]; 241 242 struct user *proc0paddr; 243 244 /* Number of machine cycles per microsecond */ 245 u_int64_t cycles_per_usec; 246 247 /* number of cpus in the box. really! */ 248 int ncpus; 249 250 /* machine check info array, valloc()'ed in allocsys() */ 251 252 static struct mchkinfo startup_info, 253 *mchkinfo_all_cpus; 254 255 struct bootinfo_kernel bootinfo; 256 257 /* For built-in TCDS */ 258 #if defined(DEC_3000_300) || defined(DEC_3000_500) 259 u_int8_t dec_3000_scsiid[2], dec_3000_scsifast[2]; 260 #endif 261 262 struct platform platform; 263 264 u_int32_t vm_kmem_size = _VM_KMEM_SIZE; 265 u_int32_t vm_phys_size = _VM_PHYS_SIZE; 266 267 #ifdef DDB 268 /* start and end of kernel symbol table */ 269 void *ksym_start, *ksym_end; 270 #endif 271 272 /* for cpu_sysctl() */ 273 int alpha_unaligned_print = 1; /* warn about unaligned accesses */ 274 int alpha_unaligned_fix = 1; /* fix up unaligned accesses */ 275 int alpha_unaligned_sigbus = 0; /* don't SIGBUS on fixed-up accesses */ 276 277 /* 278 * XXX This should be dynamically sized, but we have the chicken-egg problem! 279 * XXX it should also be larger than it is, because not all of the mddt 280 * XXX clusters end up being used for VM. 281 */ 282 phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX]; /* low size bits overloaded */ 283 int mem_cluster_cnt; 284 285 caddr_t allocsys __P((caddr_t)); 286 int cpu_dump __P((void)); 287 int cpu_dumpsize __P((void)); 288 u_long cpu_dump_mempagecnt __P((void)); 289 void dumpsys __P((void)); 290 void identifycpu __P((void)); 291 void netintr __P((void)); 292 void printregs __P((struct reg *)); 293 294 void 295 alpha_init(pfn, ptb, bim, bip, biv) 296 u_long pfn; /* first free PFN number */ 297 u_long ptb; /* PFN of current level 1 page table */ 298 u_long bim; /* bootinfo magic */ 299 u_long bip; /* bootinfo pointer */ 300 u_long biv; /* bootinfo version */ 301 { 302 extern char kernel_text[], _end[]; 303 struct mddt *mddtp; 304 struct mddt_cluster *memc; 305 int i, mddtweird; 306 struct vm_physseg *vps; 307 vaddr_t kernstart, kernend; 308 paddr_t kernstartpfn, kernendpfn, pfn0, pfn1; 309 vsize_t size; 310 char *p; 311 caddr_t v; 312 char *bootinfo_msg; 313 314 /* NO OUTPUT ALLOWED UNTIL FURTHER NOTICE */ 315 316 /* 317 * Turn off interrupts (not mchecks) and floating point. 318 * Make sure the instruction and data streams are consistent. 319 */ 320 (void)alpha_pal_swpipl(ALPHA_PSL_IPL_HIGH); 321 alpha_pal_wrfen(0); 322 ALPHA_TBIA(); 323 alpha_pal_imb(); 324 325 /* 326 * Get critical system information (if possible, from the 327 * information provided by the boot program). 328 */ 329 bootinfo_msg = NULL; 330 if (bim == BOOTINFO_MAGIC) { 331 if (biv == 0) { /* backward compat */ 332 biv = *(u_long *)bip; 333 bip += 8; 334 } 335 switch (biv) { 336 case 1: { 337 struct bootinfo_v1 *v1p = (struct bootinfo_v1 *)bip; 338 339 bootinfo.ssym = v1p->ssym; 340 bootinfo.esym = v1p->esym; 341 /* hwrpb may not be provided by boot block in v1 */ 342 if (v1p->hwrpb != NULL) { 343 bootinfo.hwrpb_phys = 344 ((struct rpb *)v1p->hwrpb)->rpb_phys; 345 bootinfo.hwrpb_size = v1p->hwrpbsize; 346 } else { 347 bootinfo.hwrpb_phys = 348 ((struct rpb *)HWRPB_ADDR)->rpb_phys; 349 bootinfo.hwrpb_size = 350 ((struct rpb *)HWRPB_ADDR)->rpb_size; 351 } 352 bcopy(v1p->boot_flags, bootinfo.boot_flags, 353 min(sizeof v1p->boot_flags, 354 sizeof bootinfo.boot_flags)); 355 bcopy(v1p->booted_kernel, bootinfo.booted_kernel, 356 min(sizeof v1p->booted_kernel, 357 sizeof bootinfo.booted_kernel)); 358 /* booted dev not provided in bootinfo */ 359 init_prom_interface((struct rpb *) 360 ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys)); 361 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 362 sizeof bootinfo.booted_dev); 363 break; 364 } 365 default: 366 bootinfo_msg = "unknown bootinfo version"; 367 goto nobootinfo; 368 } 369 } else { 370 bootinfo_msg = "boot program did not pass bootinfo"; 371 nobootinfo: 372 bootinfo.ssym = (u_long)_end; 373 bootinfo.esym = (u_long)_end; 374 bootinfo.hwrpb_phys = ((struct rpb *)HWRPB_ADDR)->rpb_phys; 375 bootinfo.hwrpb_size = ((struct rpb *)HWRPB_ADDR)->rpb_size; 376 init_prom_interface((struct rpb *)HWRPB_ADDR); 377 prom_getenv(PROM_E_BOOTED_OSFLAGS, bootinfo.boot_flags, 378 sizeof bootinfo.boot_flags); 379 prom_getenv(PROM_E_BOOTED_FILE, bootinfo.booted_kernel, 380 sizeof bootinfo.booted_kernel); 381 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 382 sizeof bootinfo.booted_dev); 383 } 384 385 /* 386 * Initialize the kernel's mapping of the RPB. It's needed for 387 * lots of things. 388 */ 389 hwrpb = (struct rpb *)ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys); 390 391 #if defined(DEC_3000_300) || defined(DEC_3000_500) 392 if (hwrpb->rpb_type == ST_DEC_3000_300 || 393 hwrpb->rpb_type == ST_DEC_3000_500) { 394 prom_getenv(PROM_E_SCSIID, dec_3000_scsiid, 395 sizeof(dec_3000_scsiid)); 396 prom_getenv(PROM_E_SCSIFAST, dec_3000_scsifast, 397 sizeof(dec_3000_scsifast)); 398 } 399 #endif 400 401 /* 402 * Remember how many cycles there are per microsecond, 403 * so that we can use delay(). Round up, for safety. 404 */ 405 cycles_per_usec = (hwrpb->rpb_cc_freq + 999999) / 1000000; 406 407 /* 408 * Initalize the (temporary) bootstrap console interface, so 409 * we can use printf until the VM system starts being setup. 410 * The real console is initialized before then. 411 */ 412 init_bootstrap_console(); 413 414 /* OUTPUT NOW ALLOWED */ 415 416 /* delayed from above */ 417 if (bootinfo_msg) 418 printf("WARNING: %s (0x%lx, 0x%lx, 0x%lx)\n", 419 bootinfo_msg, bim, bip, biv); 420 421 /* Initialize the trap vectors on the primary processor. */ 422 trap_init(); 423 424 /* 425 * Find out what hardware we're on, and do basic initialization. 426 */ 427 cputype = hwrpb->rpb_type; 428 if (cputype < 0) { 429 /* 430 * At least some white-box systems have SRM which 431 * reports a systype that's the negative of their 432 * blue-box counterpart. 433 */ 434 cputype = -cputype; 435 } 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 (*platform.cons_init)(); 448 449 #ifdef DIAGNOSTIC 450 /* Paranoid sanity checking */ 451 452 /* We should always be running on the the primary. */ 453 assert(hwrpb->rpb_primary_cpu_id == alpha_pal_whami()); 454 455 /* 456 * On single-CPU systypes, the primary should always be CPU 0, 457 * except on Alpha 8200 systems where the CPU id is related 458 * to the VID, which is related to the Turbo Laser node id. 459 */ 460 if (cputype != ST_DEC_21000) 461 assert(hwrpb->rpb_primary_cpu_id == 0); 462 #endif 463 464 /* NO MORE FIRMWARE ACCESS ALLOWED */ 465 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 466 /* 467 * XXX (unless _PMAP_MAY_USE_PROM_CONSOLE is defined and 468 * XXX pmap_uses_prom_console() evaluates to non-zero.) 469 */ 470 #endif 471 472 /* 473 * find out this system's page size 474 */ 475 PAGE_SIZE = hwrpb->rpb_page_size; 476 if (PAGE_SIZE != 8192) 477 panic("page size %d != 8192?!", PAGE_SIZE); 478 479 /* 480 * Initialize PAGE_SIZE-dependent variables. 481 */ 482 uvm_setpagesize(); 483 484 /* 485 * Find the beginning and end of the kernel (and leave a 486 * bit of space before the beginning for the bootstrap 487 * stack). 488 */ 489 kernstart = trunc_page(kernel_text) - 2 * PAGE_SIZE; 490 #ifdef DDB 491 ksym_start = (void *)bootinfo.ssym; 492 ksym_end = (void *)bootinfo.esym; 493 kernend = (vaddr_t)round_page(ksym_end); 494 #else 495 kernend = (vaddr_t)round_page(_end); 496 #endif 497 498 kernstartpfn = atop(ALPHA_K0SEG_TO_PHYS(kernstart)); 499 kernendpfn = atop(ALPHA_K0SEG_TO_PHYS(kernend)); 500 501 /* 502 * Find out how much memory is available, by looking at 503 * the memory cluster descriptors. This also tries to do 504 * its best to detect things things that have never been seen 505 * before... 506 */ 507 mddtp = (struct mddt *)(((caddr_t)hwrpb) + hwrpb->rpb_memdat_off); 508 509 /* MDDT SANITY CHECKING */ 510 mddtweird = 0; 511 if (mddtp->mddt_cluster_cnt < 2) { 512 mddtweird = 1; 513 printf("WARNING: weird number of mem clusters: %lu\n", 514 mddtp->mddt_cluster_cnt); 515 } 516 517 #if 0 518 printf("Memory cluster count: %d\n", mddtp->mddt_cluster_cnt); 519 #endif 520 521 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 522 memc = &mddtp->mddt_clusters[i]; 523 #if 0 524 printf("MEMC %d: pfn 0x%lx cnt 0x%lx usage 0x%lx\n", i, 525 memc->mddt_pfn, memc->mddt_pg_cnt, memc->mddt_usage); 526 #endif 527 totalphysmem += memc->mddt_pg_cnt; 528 if (mem_cluster_cnt < VM_PHYSSEG_MAX) { /* XXX */ 529 mem_clusters[mem_cluster_cnt].start = 530 ptoa(memc->mddt_pfn); 531 mem_clusters[mem_cluster_cnt].size = 532 ptoa(memc->mddt_pg_cnt); 533 if (memc->mddt_usage & MDDT_mbz || 534 memc->mddt_usage & MDDT_NONVOLATILE || /* XXX */ 535 memc->mddt_usage & MDDT_PALCODE) 536 mem_clusters[mem_cluster_cnt].size |= 537 PROT_READ; 538 else 539 mem_clusters[mem_cluster_cnt].size |= 540 PROT_READ | PROT_WRITE | PROT_EXEC; 541 mem_cluster_cnt++; 542 } 543 544 if (memc->mddt_usage & MDDT_mbz) { 545 mddtweird = 1; 546 printf("WARNING: mem cluster %d has weird " 547 "usage 0x%lx\n", i, memc->mddt_usage); 548 unknownmem += memc->mddt_pg_cnt; 549 continue; 550 } 551 if (memc->mddt_usage & MDDT_NONVOLATILE) { 552 /* XXX should handle these... */ 553 printf("WARNING: skipping non-volatile mem " 554 "cluster %d\n", i); 555 unusedmem += memc->mddt_pg_cnt; 556 continue; 557 } 558 if (memc->mddt_usage & MDDT_PALCODE) { 559 resvmem += memc->mddt_pg_cnt; 560 continue; 561 } 562 563 /* 564 * We have a memory cluster available for system 565 * software use. We must determine if this cluster 566 * holds the kernel. 567 */ 568 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 569 /* 570 * XXX If the kernel uses the PROM console, we only use the 571 * XXX memory after the kernel in the first system segment, 572 * XXX to avoid clobbering prom mapping, data, etc. 573 */ 574 if (!pmap_uses_prom_console() || physmem == 0) { 575 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 576 physmem += memc->mddt_pg_cnt; 577 pfn0 = memc->mddt_pfn; 578 pfn1 = memc->mddt_pfn + memc->mddt_pg_cnt; 579 if (pfn0 <= kernstartpfn && kernendpfn <= pfn1) { 580 /* 581 * Must compute the location of the kernel 582 * within the segment. 583 */ 584 #if 0 585 printf("Cluster %d contains kernel\n", i); 586 #endif 587 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 588 if (!pmap_uses_prom_console()) { 589 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 590 if (pfn0 < kernstartpfn) { 591 /* 592 * There is a chunk before the kernel. 593 */ 594 #if 0 595 printf("Loading chunk before kernel: " 596 "0x%lx / 0x%lx\n", pfn0, kernstartpfn); 597 #endif 598 uvm_page_physload(pfn0, kernstartpfn, 599 pfn0, kernstartpfn, VM_FREELIST_DEFAULT); 600 } 601 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 602 } 603 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 604 if (kernendpfn < pfn1) { 605 /* 606 * There is a chunk after the kernel. 607 */ 608 #if 0 609 printf("Loading chunk after kernel: " 610 "0x%lx / 0x%lx\n", kernendpfn, pfn1); 611 #endif 612 uvm_page_physload(kernendpfn, pfn1, 613 kernendpfn, pfn1, VM_FREELIST_DEFAULT); 614 } 615 } else { 616 /* 617 * Just load this cluster as one chunk. 618 */ 619 #if 0 620 printf("Loading cluster %d: 0x%lx / 0x%lx\n", i, 621 pfn0, pfn1); 622 #endif 623 uvm_page_physload(pfn0, pfn1, pfn0, pfn1, 624 VM_FREELIST_DEFAULT); 625 } 626 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 627 } 628 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 629 } 630 631 /* 632 * Dump out the MDDT if it looks odd... 633 */ 634 if (mddtweird) { 635 printf("\n"); 636 printf("complete memory cluster information:\n"); 637 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 638 printf("mddt %d:\n", i); 639 printf("\tpfn %lx\n", 640 mddtp->mddt_clusters[i].mddt_pfn); 641 printf("\tcnt %lx\n", 642 mddtp->mddt_clusters[i].mddt_pg_cnt); 643 printf("\ttest %lx\n", 644 mddtp->mddt_clusters[i].mddt_pg_test); 645 printf("\tbva %lx\n", 646 mddtp->mddt_clusters[i].mddt_v_bitaddr); 647 printf("\tbpa %lx\n", 648 mddtp->mddt_clusters[i].mddt_p_bitaddr); 649 printf("\tbcksum %lx\n", 650 mddtp->mddt_clusters[i].mddt_bit_cksum); 651 printf("\tusage %lx\n", 652 mddtp->mddt_clusters[i].mddt_usage); 653 } 654 printf("\n"); 655 } 656 657 if (totalphysmem == 0) 658 panic("can't happen: system seems to have no memory!"); 659 660 #ifdef LIMITMEM 661 /* 662 * XXX Kludge so we can run on machines with memory larger 663 * XXX than 1G until all device drivers are converted to 664 * XXX use bus_dma. (Relies on the fact that vm_physmem 665 * XXX sorted in order of increasing addresses.) 666 */ 667 if (vm_physmem[vm_nphysseg - 1].end > atop(LIMITMEM * 1024 * 1024)) { 668 669 printf("******** LIMITING MEMORY TO %dMB **********\n", 670 LIMITMEM); 671 672 do { 673 u_long ovf; 674 675 vps = &vm_physmem[vm_nphysseg - 1]; 676 677 if (vps->start >= atop(LIMITMEM * 1024 * 1024)) { 678 /* 679 * If the start is too high, just drop 680 * the whole segment. 681 * 682 * XXX can start != avail_start in this 683 * XXX case? wouldn't that mean that 684 * XXX some memory was stolen above the 685 * XXX limit? What to do? 686 */ 687 ovf = vps->end - vps->start; 688 vm_nphysseg--; 689 } else { 690 /* 691 * If the start is OK, calculate how much 692 * to drop and drop it. 693 */ 694 ovf = vps->end - atop(LIMITMEM * 1024 * 1024); 695 vps->end -= ovf; 696 vps->avail_end -= ovf; 697 } 698 physmem -= ovf; 699 unusedmem += ovf; 700 } while (vps->end > atop(LIMITMEM * 1024 * 1024)); 701 } 702 #endif /* LIMITMEM */ 703 704 maxmem = physmem; 705 706 #if 0 707 printf("totalphysmem = %d\n", totalphysmem); 708 printf("physmem = %d\n", physmem); 709 printf("resvmem = %d\n", resvmem); 710 printf("unusedmem = %d\n", unusedmem); 711 printf("unknownmem = %d\n", unknownmem); 712 #endif 713 714 /* 715 * Adjust some parameters if the amount of physmem 716 * available would cause us to croak. This is completely 717 * eyeballed and isn't meant to be the final answer. 718 * vm_phys_size is probably the only one to really worry 719 * about. 720 * 721 * It's for booting a GENERIC kernel on a large memory platform. 722 */ 723 if (physmem >= atop(128 * 1024 * 1024)) { 724 vm_kmem_size <<= 3; 725 vm_phys_size <<= 2; 726 } 727 728 /* 729 * Initialize error message buffer (at end of core). 730 */ 731 { 732 size_t sz = round_page(MSGBUFSIZE); 733 734 vps = &vm_physmem[vm_nphysseg - 1]; 735 736 /* shrink so that it'll fit in the last segment */ 737 if ((vps->avail_end - vps->avail_start) < atop(sz)) 738 sz = ptoa(vps->avail_end - vps->avail_start); 739 740 vps->end -= atop(sz); 741 vps->avail_end -= atop(sz); 742 msgbufaddr = (caddr_t) ALPHA_PHYS_TO_K0SEG(ptoa(vps->end)); 743 initmsgbuf(msgbufaddr, sz); 744 745 /* Remove the last segment if it now has no pages. */ 746 if (vps->start == vps->end) 747 vm_nphysseg--; 748 749 /* warn if the message buffer had to be shrunk */ 750 if (sz != round_page(MSGBUFSIZE)) 751 printf("WARNING: %ld bytes not available for msgbuf in last cluster (%ld used)\n", 752 round_page(MSGBUFSIZE), sz); 753 754 } 755 756 /* 757 * Init mapping for u page(s) for proc 0 758 */ 759 proc0.p_addr = proc0paddr = 760 (struct user *)pmap_steal_memory(UPAGES * PAGE_SIZE, NULL, NULL); 761 762 /* 763 * Allocate space for system data structures. These data structures 764 * are allocated here instead of cpu_startup() because physical 765 * memory is directly addressable. We don't have to map these into 766 * virtual address space. 767 */ 768 size = (vsize_t)allocsys(0); 769 v = (caddr_t)pmap_steal_memory(size, NULL, NULL); 770 if ((allocsys(v) - v) != size) 771 panic("alpha_init: table size inconsistency"); 772 773 /* 774 * Initialize the virtual memory system, and set the 775 * page table base register in proc 0's PCB. 776 */ 777 pmap_bootstrap(ALPHA_PHYS_TO_K0SEG(ptb << PGSHIFT), 778 hwrpb->rpb_max_asn, hwrpb->rpb_pcs_cnt); 779 780 /* 781 * Initialize the rest of proc 0's PCB, and cache its physical 782 * address. 783 */ 784 proc0.p_md.md_pcbpaddr = 785 (struct pcb *)ALPHA_K0SEG_TO_PHYS((vaddr_t)&proc0paddr->u_pcb); 786 787 /* 788 * Set the kernel sp, reserving space for an (empty) trapframe, 789 * and make proc0's trapframe pointer point to it for sanity. 790 */ 791 proc0paddr->u_pcb.pcb_hw.apcb_ksp = 792 (u_int64_t)proc0paddr + USPACE - sizeof(struct trapframe); 793 proc0.p_md.md_tf = 794 (struct trapframe *)proc0paddr->u_pcb.pcb_hw.apcb_ksp; 795 796 /* 797 * Look at arguments passed to us and compute boothowto. 798 */ 799 800 boothowto = RB_SINGLE; 801 #ifdef KADB 802 boothowto |= RB_KDB; 803 #endif 804 for (p = bootinfo.boot_flags; p && *p != '\0'; p++) { 805 /* 806 * Note that we'd really like to differentiate case here, 807 * but the Alpha AXP Architecture Reference Manual 808 * says that we shouldn't. 809 */ 810 switch (*p) { 811 case 'a': /* autoboot */ 812 case 'A': 813 boothowto &= ~RB_SINGLE; 814 break; 815 816 #ifdef DEBUG 817 case 'c': /* crash dump immediately after autoconfig */ 818 case 'C': 819 boothowto |= RB_DUMP; 820 break; 821 #endif 822 823 #if defined(KGDB) || defined(DDB) 824 case 'd': /* break into the kernel debugger ASAP */ 825 case 'D': 826 boothowto |= RB_KDB; 827 break; 828 #endif 829 830 case 'h': /* always halt, never reboot */ 831 case 'H': 832 boothowto |= RB_HALT; 833 break; 834 835 #if 0 836 case 'm': /* mini root present in memory */ 837 case 'M': 838 boothowto |= RB_MINIROOT; 839 break; 840 #endif 841 842 case 'n': /* askname */ 843 case 'N': 844 boothowto |= RB_ASKNAME; 845 break; 846 847 case 's': /* single-user (default, supported for sanity) */ 848 case 'S': 849 boothowto |= RB_SINGLE; 850 break; 851 852 case '-': 853 /* 854 * Just ignore this. It's not required, but it's 855 * common for it to be passed regardless. 856 */ 857 break; 858 859 default: 860 printf("Unrecognized boot flag '%c'.\n", *p); 861 break; 862 } 863 } 864 865 866 /* 867 * Figure out the number of cpus in the box, from RPB fields. 868 * Really. We mean it. 869 */ 870 for (i = 0; i < hwrpb->rpb_pcs_cnt; i++) { 871 struct pcs *pcsp; 872 873 pcsp = LOCATE_PCS(hwrpb, i); 874 if ((pcsp->pcs_flags & PCS_PP) != 0) 875 ncpus++; 876 } 877 878 /* 879 * Initialize debuggers, and break into them if appropriate. 880 */ 881 #ifdef DDB 882 db_machine_init(); 883 ddb_init((int)((u_int64_t)ksym_end - (u_int64_t)ksym_start), 884 ksym_start, ksym_end); 885 if (boothowto & RB_KDB) 886 Debugger(); 887 #endif 888 #ifdef KGDB 889 if (boothowto & RB_KDB) 890 kgdb_connect(0); 891 #endif 892 /* 893 * Figure out our clock frequency, from RPB fields. 894 */ 895 hz = hwrpb->rpb_intr_freq >> 12; 896 if (!(60 <= hz && hz <= 10240)) { 897 hz = 1024; 898 #ifdef DIAGNOSTIC 899 printf("WARNING: unbelievable rpb_intr_freq: %ld (%d hz)\n", 900 hwrpb->rpb_intr_freq, hz); 901 #endif 902 } 903 } 904 905 /* 906 * Allocate space for system data structures. We are given 907 * a starting virtual address and we return a final virtual 908 * address; along the way we set each data structure pointer. 909 * 910 * We call allocsys() with 0 to find out how much space we want, 911 * allocate that much and fill it with zeroes, and the call 912 * allocsys() again with the correct base virtual address. 913 */ 914 caddr_t 915 allocsys(v) 916 caddr_t v; 917 { 918 919 #define valloc(name, type, num) \ 920 (name) = (type *)v; v = (caddr_t)ALIGN((name)+(num)) 921 922 #ifdef REAL_CLISTS 923 valloc(cfree, struct cblock, nclist); 924 #endif 925 valloc(callout, struct callout, ncallout); 926 #ifdef SYSVSHM 927 valloc(shmsegs, struct shmid_ds, shminfo.shmmni); 928 #endif 929 #ifdef SYSVSEM 930 valloc(sema, struct semid_ds, seminfo.semmni); 931 valloc(sem, struct sem, seminfo.semmns); 932 /* This is pretty disgusting! */ 933 valloc(semu, int, (seminfo.semmnu * seminfo.semusz) / sizeof(int)); 934 #endif 935 #ifdef SYSVMSG 936 valloc(msgpool, char, msginfo.msgmax); 937 valloc(msgmaps, struct msgmap, msginfo.msgseg); 938 valloc(msghdrs, struct msg, msginfo.msgtql); 939 valloc(msqids, struct msqid_ds, msginfo.msgmni); 940 #endif 941 942 /* 943 * Determine how many buffers to allocate. 944 * We allocate bufcache % of memory for buffer space. Insure a 945 * minimum of 16 buffers. We allocate 1/2 as many swap buffer 946 * headers as file i/o buffers. 947 */ 948 if (bufpages == 0) 949 bufpages = physmem / CLSIZE * bufcache / 100; 950 if (nbuf == 0) { 951 nbuf = bufpages; 952 if (nbuf < 16) 953 nbuf = 16; 954 } 955 if (nswbuf == 0) { 956 nswbuf = (nbuf / 2) &~ 1; /* force even */ 957 if (nswbuf > 256) 958 nswbuf = 256; /* sanity */ 959 } 960 valloc(buf, struct buf, nbuf); 961 962 /* 963 * There appears to be a correlation between the number 964 * of processor slots defined in the HWRPB and the whami 965 * value that can be returned. 966 */ 967 valloc(mchkinfo_all_cpus, struct mchkinfo, hwrpb->rpb_pcs_cnt); 968 969 return (v); 970 #undef valloc 971 } 972 973 void 974 consinit() 975 { 976 977 /* 978 * Everything related to console initialization is done 979 * in alpha_init(). 980 */ 981 #if defined(DIAGNOSTIC) && defined(_PMAP_MAY_USE_PROM_CONSOLE) 982 printf("consinit: %susing prom console\n", 983 pmap_uses_prom_console() ? "" : "not "); 984 #endif 985 } 986 987 #include "pckbc.h" 988 #include "pckbd.h" 989 #if (NPCKBC > 0) && (NPCKBD == 0) 990 991 #include <dev/isa/pckbcvar.h> 992 993 /* 994 * This is called by the pbkbc driver if no pckbd is configured. 995 * On the i386, it is used to glue in the old, deprecated console 996 * code. On the Alpha, it does nothing. 997 */ 998 int 999 pckbc_machdep_cnattach(kbctag, kbcslot) 1000 pckbc_tag_t kbctag; 1001 pckbc_slot_t kbcslot; 1002 { 1003 1004 return (ENXIO); 1005 } 1006 #endif /* NPCKBC > 0 && NPCKBD == 0 */ 1007 1008 void 1009 cpu_startup() 1010 { 1011 register unsigned i; 1012 int base, residual; 1013 vaddr_t minaddr, maxaddr; 1014 vsize_t size; 1015 #if defined(DEBUG) 1016 extern int pmapdebug; 1017 int opmapdebug = pmapdebug; 1018 1019 pmapdebug = 0; 1020 #endif 1021 1022 /* 1023 * Good {morning,afternoon,evening,night}. 1024 */ 1025 printf(version); 1026 identifycpu(); 1027 printf("real mem = %lu (%lu reserved for PROM, %lu used by NetBSD)\n", 1028 ((psize_t) totalphysmem << (psize_t) PAGE_SHIFT), 1029 ptoa(resvmem), ptoa(physmem)); 1030 if (unusedmem) 1031 printf("WARNING: unused memory = %d bytes\n", ctob(unusedmem)); 1032 if (unknownmem) 1033 printf("WARNING: %d bytes of memory with unknown purpose\n", 1034 ctob(unknownmem)); 1035 1036 /* 1037 * Allocate virtual address space for file I/O buffers. 1038 * Note they are different than the array of headers, 'buf', 1039 * and usually occupy more virtual memory than physical. 1040 */ 1041 size = MAXBSIZE * nbuf; 1042 if (uvm_map(kernel_map, (vaddr_t *) &buffers, round_page(size), 1043 NULL, UVM_UNKNOWN_OFFSET, 1044 UVM_MAPFLAG(UVM_PROT_NONE, UVM_PROT_NONE, UVM_INH_NONE, 1045 UVM_ADV_NORMAL, 0)) != KERN_SUCCESS) 1046 panic("startup: cannot allocate VM for buffers"); 1047 base = bufpages / nbuf; 1048 residual = bufpages % nbuf; 1049 for (i = 0; i < nbuf; i++) { 1050 vsize_t curbufsize; 1051 vaddr_t curbuf; 1052 struct vm_page *pg; 1053 1054 /* 1055 * Each buffer has MAXBSIZE bytes of VM space allocated. Of 1056 * that MAXBSIZE space, we allocate and map (base+1) pages 1057 * for the first "residual" buffers, and then we allocate 1058 * "base" pages for the rest. 1059 */ 1060 curbuf = (vaddr_t) buffers + (i * MAXBSIZE); 1061 curbufsize = CLBYTES * ((i < residual) ? (base+1) : base); 1062 1063 while (curbufsize) { 1064 pg = uvm_pagealloc(NULL, 0, NULL, 0); 1065 if (pg == NULL) 1066 panic("cpu_startup: not enough memory for " 1067 "buffer cache"); 1068 #if defined(PMAP_NEW) 1069 pmap_kenter_pgs(curbuf, &pg, 1); 1070 #else 1071 pmap_enter(kernel_map->pmap, curbuf, 1072 VM_PAGE_TO_PHYS(pg), VM_PROT_READ|VM_PROT_WRITE, 1073 TRUE, VM_PROT_READ|VM_PROT_WRITE); 1074 #endif 1075 curbuf += PAGE_SIZE; 1076 curbufsize -= PAGE_SIZE; 1077 } 1078 } 1079 /* 1080 * Allocate a submap for exec arguments. This map effectively 1081 * limits the number of processes exec'ing at any time. 1082 */ 1083 exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 1084 16 * NCARGS, TRUE, FALSE, NULL); 1085 1086 /* 1087 * Allocate a submap for physio 1088 */ 1089 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 1090 VM_PHYS_SIZE, TRUE, FALSE, NULL); 1091 1092 /* 1093 * No need to allocate an mbuf cluster submap. Mbuf clusters 1094 * are allocated via the pool allocator, and we use K0SEG to 1095 * map those pages. 1096 */ 1097 1098 /* 1099 * Initialize callouts 1100 */ 1101 callfree = callout; 1102 for (i = 1; i < ncallout; i++) 1103 callout[i-1].c_next = &callout[i]; 1104 callout[i-1].c_next = NULL; 1105 1106 #if defined(DEBUG) 1107 pmapdebug = opmapdebug; 1108 #endif 1109 printf("avail mem = %ld\n", (long)ptoa(uvmexp.free)); 1110 #if 0 1111 { 1112 extern u_long pmap_pages_stolen; 1113 printf("stolen memory for VM structures = %ld bytes\n", 1114 pmap_pages_stolen * PAGE_SIZE); 1115 } 1116 #endif 1117 printf("using %ld buffers containing %ld bytes of memory\n", 1118 (long)nbuf, (long)(bufpages * CLBYTES)); 1119 1120 /* 1121 * Set up buffers, so they can be used to read disk labels. 1122 */ 1123 bufinit(); 1124 1125 /* 1126 * Set up the HWPCB so that it's safe to configure secondary 1127 * CPUs. 1128 */ 1129 hwrpb_primary_init(); 1130 } 1131 1132 /* 1133 * Retrieve the platform name from the DSR. 1134 */ 1135 const char * 1136 alpha_dsr_sysname() 1137 { 1138 struct dsrdb *dsr; 1139 const char *sysname; 1140 1141 /* 1142 * DSR does not exist on early HWRPB versions. 1143 */ 1144 if (hwrpb->rpb_version < HWRPB_DSRDB_MINVERS) 1145 return (NULL); 1146 1147 dsr = (struct dsrdb *)(((caddr_t)hwrpb) + hwrpb->rpb_dsrdb_off); 1148 sysname = (const char *)((caddr_t)dsr + (dsr->dsr_sysname_off + 1149 sizeof(u_int64_t))); 1150 return (sysname); 1151 } 1152 1153 /* 1154 * Lookup the system specified system variation in the provided table, 1155 * returning the model string on match. 1156 */ 1157 const char * 1158 alpha_variation_name(variation, avtp) 1159 u_int64_t variation; 1160 const struct alpha_variation_table *avtp; 1161 { 1162 int i; 1163 1164 for (i = 0; avtp[i].avt_model != NULL; i++) 1165 if (avtp[i].avt_variation == variation) 1166 return (avtp[i].avt_model); 1167 return (NULL); 1168 } 1169 1170 /* 1171 * Generate a default platform name based for unknown system variations. 1172 */ 1173 const char * 1174 alpha_unknown_sysname() 1175 { 1176 static char s[128]; /* safe size */ 1177 1178 sprintf(s, "%s family, unknown model variation 0x%lx", 1179 platform.family, hwrpb->rpb_variation & SV_ST_MASK); 1180 return ((const char *)s); 1181 } 1182 1183 void 1184 identifycpu() 1185 { 1186 1187 /* 1188 * print out CPU identification information. 1189 */ 1190 printf("%s, %ldMHz\n", cpu_model, 1191 hwrpb->rpb_cc_freq / 1000000); /* XXX true for 21164? */ 1192 printf("%ld byte page size, %d processor%s.\n", 1193 hwrpb->rpb_page_size, ncpus, ncpus == 1 ? "" : "s"); 1194 #if 0 1195 /* this isn't defined for any systems that we run on? */ 1196 printf("serial number 0x%lx 0x%lx\n", 1197 ((long *)hwrpb->rpb_ssn)[0], ((long *)hwrpb->rpb_ssn)[1]); 1198 1199 /* and these aren't particularly useful! */ 1200 printf("variation: 0x%lx, revision 0x%lx\n", 1201 hwrpb->rpb_variation, *(long *)hwrpb->rpb_revision); 1202 #endif 1203 } 1204 1205 int waittime = -1; 1206 struct pcb dumppcb; 1207 1208 void 1209 cpu_reboot(howto, bootstr) 1210 int howto; 1211 char *bootstr; 1212 { 1213 extern int cold; 1214 #if defined(MULTIPROCESSOR) 1215 #if 0 /* XXX See below. */ 1216 u_long cpu_id; 1217 #endif 1218 #endif 1219 1220 #if defined(MULTIPROCESSOR) 1221 /* We must be running on the primary CPU. */ 1222 if (alpha_pal_whami() != hwrpb->rpb_primary_cpu_id) 1223 panic("cpu_reboot: not on primary CPU!"); 1224 #endif 1225 1226 /* If system is cold, just halt. */ 1227 if (cold) { 1228 howto |= RB_HALT; 1229 goto haltsys; 1230 } 1231 1232 /* If "always halt" was specified as a boot flag, obey. */ 1233 if ((boothowto & RB_HALT) != 0) 1234 howto |= RB_HALT; 1235 1236 boothowto = howto; 1237 if ((howto & RB_NOSYNC) == 0 && waittime < 0) { 1238 waittime = 0; 1239 vfs_shutdown(); 1240 /* 1241 * If we've been adjusting the clock, the todr 1242 * will be out of synch; adjust it now. 1243 */ 1244 resettodr(); 1245 } 1246 1247 /* Disable interrupts. */ 1248 splhigh(); 1249 1250 /* If rebooting and a dump is requested do it. */ 1251 #if 0 1252 if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP) 1253 #else 1254 if (howto & RB_DUMP) 1255 #endif 1256 dumpsys(); 1257 1258 haltsys: 1259 1260 /* run any shutdown hooks */ 1261 doshutdownhooks(); 1262 1263 #if defined(MULTIPROCESSOR) 1264 #if 0 /* XXX doesn't work when called from here?! */ 1265 /* Kill off any secondary CPUs. */ 1266 for (cpu_id = 0; cpu_id < hwrpb->rpb_pcs_cnt; cpu_id++) { 1267 if (cpu_id == hwrpb->rpb_primary_cpu_id || 1268 cpu_info[cpu_id].ci_softc == NULL) 1269 continue; 1270 cpu_halt_secondary(cpu_id); 1271 } 1272 #endif 1273 #endif 1274 1275 #ifdef BOOTKEY 1276 printf("hit any key to %s...\n", howto & RB_HALT ? "halt" : "reboot"); 1277 cnpollc(1); /* for proper keyboard command handling */ 1278 cngetc(); 1279 cnpollc(0); 1280 printf("\n"); 1281 #endif 1282 1283 /* Finally, powerdown/halt/reboot the system. */ 1284 if ((howto && RB_POWERDOWN) == RB_POWERDOWN && 1285 platform.powerdown != NULL) { 1286 (*platform.powerdown)(); 1287 printf("WARNING: powerdown failed!\n"); 1288 } 1289 printf("%s\n\n", howto & RB_HALT ? "halted." : "rebooting..."); 1290 prom_halt(howto & RB_HALT); 1291 /*NOTREACHED*/ 1292 } 1293 1294 /* 1295 * These variables are needed by /sbin/savecore 1296 */ 1297 u_long dumpmag = 0x8fca0101; /* magic number */ 1298 int dumpsize = 0; /* pages */ 1299 long dumplo = 0; /* blocks */ 1300 1301 /* 1302 * cpu_dumpsize: calculate size of machine-dependent kernel core dump headers. 1303 */ 1304 int 1305 cpu_dumpsize() 1306 { 1307 int size; 1308 1309 size = ALIGN(sizeof(kcore_seg_t)) + ALIGN(sizeof(cpu_kcore_hdr_t)) + 1310 ALIGN(mem_cluster_cnt * sizeof(phys_ram_seg_t)); 1311 if (roundup(size, dbtob(1)) != dbtob(1)) 1312 return -1; 1313 1314 return (1); 1315 } 1316 1317 /* 1318 * cpu_dump_mempagecnt: calculate size of RAM (in pages) to be dumped. 1319 */ 1320 u_long 1321 cpu_dump_mempagecnt() 1322 { 1323 u_long i, n; 1324 1325 n = 0; 1326 for (i = 0; i < mem_cluster_cnt; i++) 1327 n += atop(mem_clusters[i].size); 1328 return (n); 1329 } 1330 1331 /* 1332 * cpu_dump: dump machine-dependent kernel core dump headers. 1333 */ 1334 int 1335 cpu_dump() 1336 { 1337 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1338 char buf[dbtob(1)]; 1339 kcore_seg_t *segp; 1340 cpu_kcore_hdr_t *cpuhdrp; 1341 phys_ram_seg_t *memsegp; 1342 int i; 1343 1344 dump = bdevsw[major(dumpdev)].d_dump; 1345 1346 bzero(buf, sizeof buf); 1347 segp = (kcore_seg_t *)buf; 1348 cpuhdrp = (cpu_kcore_hdr_t *)&buf[ALIGN(sizeof(*segp))]; 1349 memsegp = (phys_ram_seg_t *)&buf[ ALIGN(sizeof(*segp)) + 1350 ALIGN(sizeof(*cpuhdrp))]; 1351 1352 /* 1353 * Generate a segment header. 1354 */ 1355 CORE_SETMAGIC(*segp, KCORE_MAGIC, MID_MACHINE, CORE_CPU); 1356 segp->c_size = dbtob(1) - ALIGN(sizeof(*segp)); 1357 1358 /* 1359 * Add the machine-dependent header info. 1360 */ 1361 cpuhdrp->lev1map_pa = ALPHA_K0SEG_TO_PHYS((vaddr_t)kernel_lev1map); 1362 cpuhdrp->page_size = PAGE_SIZE; 1363 cpuhdrp->nmemsegs = mem_cluster_cnt; 1364 1365 /* 1366 * Fill in the memory segment descriptors. 1367 */ 1368 for (i = 0; i < mem_cluster_cnt; i++) { 1369 memsegp[i].start = mem_clusters[i].start; 1370 memsegp[i].size = mem_clusters[i].size & ~PAGE_MASK; 1371 } 1372 1373 return (dump(dumpdev, dumplo, (caddr_t)buf, dbtob(1))); 1374 } 1375 1376 /* 1377 * This is called by main to set dumplo and dumpsize. 1378 * Dumps always skip the first CLBYTES of disk space 1379 * in case there might be a disk label stored there. 1380 * If there is extra space, put dump at the end to 1381 * reduce the chance that swapping trashes it. 1382 */ 1383 void 1384 cpu_dumpconf() 1385 { 1386 int nblks, dumpblks; /* size of dump area */ 1387 int maj; 1388 1389 if (dumpdev == NODEV) 1390 goto bad; 1391 maj = major(dumpdev); 1392 if (maj < 0 || maj >= nblkdev) 1393 panic("dumpconf: bad dumpdev=0x%x", dumpdev); 1394 if (bdevsw[maj].d_psize == NULL) 1395 goto bad; 1396 nblks = (*bdevsw[maj].d_psize)(dumpdev); 1397 if (nblks <= ctod(1)) 1398 goto bad; 1399 1400 dumpblks = cpu_dumpsize(); 1401 if (dumpblks < 0) 1402 goto bad; 1403 dumpblks += ctod(cpu_dump_mempagecnt()); 1404 1405 /* If dump won't fit (incl. room for possible label), punt. */ 1406 if (dumpblks > (nblks - ctod(1))) 1407 goto bad; 1408 1409 /* Put dump at end of partition */ 1410 dumplo = nblks - dumpblks; 1411 1412 /* dumpsize is in page units, and doesn't include headers. */ 1413 dumpsize = cpu_dump_mempagecnt(); 1414 return; 1415 1416 bad: 1417 dumpsize = 0; 1418 return; 1419 } 1420 1421 /* 1422 * Dump the kernel's image to the swap partition. 1423 */ 1424 #define BYTES_PER_DUMP NBPG 1425 1426 void 1427 dumpsys() 1428 { 1429 u_long totalbytesleft, bytes, i, n, memcl; 1430 u_long maddr; 1431 int psize; 1432 daddr_t blkno; 1433 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1434 int error; 1435 1436 /* Save registers. */ 1437 savectx(&dumppcb); 1438 1439 msgbufenabled = 0; /* don't record dump msgs in msgbuf */ 1440 if (dumpdev == NODEV) 1441 return; 1442 1443 /* 1444 * For dumps during autoconfiguration, 1445 * if dump device has already configured... 1446 */ 1447 if (dumpsize == 0) 1448 cpu_dumpconf(); 1449 if (dumplo <= 0) { 1450 printf("\ndump to dev %u,%u not possible\n", major(dumpdev), 1451 minor(dumpdev)); 1452 return; 1453 } 1454 printf("\ndumping to dev %u,%u offset %ld\n", major(dumpdev), 1455 minor(dumpdev), dumplo); 1456 1457 psize = (*bdevsw[major(dumpdev)].d_psize)(dumpdev); 1458 printf("dump "); 1459 if (psize == -1) { 1460 printf("area unavailable\n"); 1461 return; 1462 } 1463 1464 /* XXX should purge all outstanding keystrokes. */ 1465 1466 if ((error = cpu_dump()) != 0) 1467 goto err; 1468 1469 totalbytesleft = ptoa(cpu_dump_mempagecnt()); 1470 blkno = dumplo + cpu_dumpsize(); 1471 dump = bdevsw[major(dumpdev)].d_dump; 1472 error = 0; 1473 1474 for (memcl = 0; memcl < mem_cluster_cnt; memcl++) { 1475 maddr = mem_clusters[memcl].start; 1476 bytes = mem_clusters[memcl].size & ~PAGE_MASK; 1477 1478 for (i = 0; i < bytes; i += n, totalbytesleft -= n) { 1479 1480 /* Print out how many MBs we to go. */ 1481 if ((totalbytesleft % (1024*1024)) == 0) 1482 printf("%ld ", totalbytesleft / (1024 * 1024)); 1483 1484 /* Limit size for next transfer. */ 1485 n = bytes - i; 1486 if (n > BYTES_PER_DUMP) 1487 n = BYTES_PER_DUMP; 1488 1489 error = (*dump)(dumpdev, blkno, 1490 (caddr_t)ALPHA_PHYS_TO_K0SEG(maddr), n); 1491 if (error) 1492 goto err; 1493 maddr += n; 1494 blkno += btodb(n); /* XXX? */ 1495 1496 /* XXX should look for keystrokes, to cancel. */ 1497 } 1498 } 1499 1500 err: 1501 switch (error) { 1502 1503 case ENXIO: 1504 printf("device bad\n"); 1505 break; 1506 1507 case EFAULT: 1508 printf("device not ready\n"); 1509 break; 1510 1511 case EINVAL: 1512 printf("area improper\n"); 1513 break; 1514 1515 case EIO: 1516 printf("i/o error\n"); 1517 break; 1518 1519 case EINTR: 1520 printf("aborted from console\n"); 1521 break; 1522 1523 case 0: 1524 printf("succeeded\n"); 1525 break; 1526 1527 default: 1528 printf("error %d\n", error); 1529 break; 1530 } 1531 printf("\n\n"); 1532 delay(1000); 1533 } 1534 1535 void 1536 frametoreg(framep, regp) 1537 struct trapframe *framep; 1538 struct reg *regp; 1539 { 1540 1541 regp->r_regs[R_V0] = framep->tf_regs[FRAME_V0]; 1542 regp->r_regs[R_T0] = framep->tf_regs[FRAME_T0]; 1543 regp->r_regs[R_T1] = framep->tf_regs[FRAME_T1]; 1544 regp->r_regs[R_T2] = framep->tf_regs[FRAME_T2]; 1545 regp->r_regs[R_T3] = framep->tf_regs[FRAME_T3]; 1546 regp->r_regs[R_T4] = framep->tf_regs[FRAME_T4]; 1547 regp->r_regs[R_T5] = framep->tf_regs[FRAME_T5]; 1548 regp->r_regs[R_T6] = framep->tf_regs[FRAME_T6]; 1549 regp->r_regs[R_T7] = framep->tf_regs[FRAME_T7]; 1550 regp->r_regs[R_S0] = framep->tf_regs[FRAME_S0]; 1551 regp->r_regs[R_S1] = framep->tf_regs[FRAME_S1]; 1552 regp->r_regs[R_S2] = framep->tf_regs[FRAME_S2]; 1553 regp->r_regs[R_S3] = framep->tf_regs[FRAME_S3]; 1554 regp->r_regs[R_S4] = framep->tf_regs[FRAME_S4]; 1555 regp->r_regs[R_S5] = framep->tf_regs[FRAME_S5]; 1556 regp->r_regs[R_S6] = framep->tf_regs[FRAME_S6]; 1557 regp->r_regs[R_A0] = framep->tf_regs[FRAME_A0]; 1558 regp->r_regs[R_A1] = framep->tf_regs[FRAME_A1]; 1559 regp->r_regs[R_A2] = framep->tf_regs[FRAME_A2]; 1560 regp->r_regs[R_A3] = framep->tf_regs[FRAME_A3]; 1561 regp->r_regs[R_A4] = framep->tf_regs[FRAME_A4]; 1562 regp->r_regs[R_A5] = framep->tf_regs[FRAME_A5]; 1563 regp->r_regs[R_T8] = framep->tf_regs[FRAME_T8]; 1564 regp->r_regs[R_T9] = framep->tf_regs[FRAME_T9]; 1565 regp->r_regs[R_T10] = framep->tf_regs[FRAME_T10]; 1566 regp->r_regs[R_T11] = framep->tf_regs[FRAME_T11]; 1567 regp->r_regs[R_RA] = framep->tf_regs[FRAME_RA]; 1568 regp->r_regs[R_T12] = framep->tf_regs[FRAME_T12]; 1569 regp->r_regs[R_AT] = framep->tf_regs[FRAME_AT]; 1570 regp->r_regs[R_GP] = framep->tf_regs[FRAME_GP]; 1571 /* regp->r_regs[R_SP] = framep->tf_regs[FRAME_SP]; XXX */ 1572 regp->r_regs[R_ZERO] = 0; 1573 } 1574 1575 void 1576 regtoframe(regp, framep) 1577 struct reg *regp; 1578 struct trapframe *framep; 1579 { 1580 1581 framep->tf_regs[FRAME_V0] = regp->r_regs[R_V0]; 1582 framep->tf_regs[FRAME_T0] = regp->r_regs[R_T0]; 1583 framep->tf_regs[FRAME_T1] = regp->r_regs[R_T1]; 1584 framep->tf_regs[FRAME_T2] = regp->r_regs[R_T2]; 1585 framep->tf_regs[FRAME_T3] = regp->r_regs[R_T3]; 1586 framep->tf_regs[FRAME_T4] = regp->r_regs[R_T4]; 1587 framep->tf_regs[FRAME_T5] = regp->r_regs[R_T5]; 1588 framep->tf_regs[FRAME_T6] = regp->r_regs[R_T6]; 1589 framep->tf_regs[FRAME_T7] = regp->r_regs[R_T7]; 1590 framep->tf_regs[FRAME_S0] = regp->r_regs[R_S0]; 1591 framep->tf_regs[FRAME_S1] = regp->r_regs[R_S1]; 1592 framep->tf_regs[FRAME_S2] = regp->r_regs[R_S2]; 1593 framep->tf_regs[FRAME_S3] = regp->r_regs[R_S3]; 1594 framep->tf_regs[FRAME_S4] = regp->r_regs[R_S4]; 1595 framep->tf_regs[FRAME_S5] = regp->r_regs[R_S5]; 1596 framep->tf_regs[FRAME_S6] = regp->r_regs[R_S6]; 1597 framep->tf_regs[FRAME_A0] = regp->r_regs[R_A0]; 1598 framep->tf_regs[FRAME_A1] = regp->r_regs[R_A1]; 1599 framep->tf_regs[FRAME_A2] = regp->r_regs[R_A2]; 1600 framep->tf_regs[FRAME_A3] = regp->r_regs[R_A3]; 1601 framep->tf_regs[FRAME_A4] = regp->r_regs[R_A4]; 1602 framep->tf_regs[FRAME_A5] = regp->r_regs[R_A5]; 1603 framep->tf_regs[FRAME_T8] = regp->r_regs[R_T8]; 1604 framep->tf_regs[FRAME_T9] = regp->r_regs[R_T9]; 1605 framep->tf_regs[FRAME_T10] = regp->r_regs[R_T10]; 1606 framep->tf_regs[FRAME_T11] = regp->r_regs[R_T11]; 1607 framep->tf_regs[FRAME_RA] = regp->r_regs[R_RA]; 1608 framep->tf_regs[FRAME_T12] = regp->r_regs[R_T12]; 1609 framep->tf_regs[FRAME_AT] = regp->r_regs[R_AT]; 1610 framep->tf_regs[FRAME_GP] = regp->r_regs[R_GP]; 1611 /* framep->tf_regs[FRAME_SP] = regp->r_regs[R_SP]; XXX */ 1612 /* ??? = regp->r_regs[R_ZERO]; */ 1613 } 1614 1615 void 1616 printregs(regp) 1617 struct reg *regp; 1618 { 1619 int i; 1620 1621 for (i = 0; i < 32; i++) 1622 printf("R%d:\t0x%016lx%s", i, regp->r_regs[i], 1623 i & 1 ? "\n" : "\t"); 1624 } 1625 1626 void 1627 regdump(framep) 1628 struct trapframe *framep; 1629 { 1630 struct reg reg; 1631 1632 frametoreg(framep, ®); 1633 reg.r_regs[R_SP] = alpha_pal_rdusp(); 1634 1635 printf("REGISTERS:\n"); 1636 printregs(®); 1637 } 1638 1639 #ifdef DEBUG 1640 int sigdebug = 0; 1641 int sigpid = 0; 1642 #define SDB_FOLLOW 0x01 1643 #define SDB_KSTACK 0x02 1644 #endif 1645 1646 /* 1647 * Send an interrupt to process. 1648 */ 1649 void 1650 sendsig(catcher, sig, mask, code) 1651 sig_t catcher; 1652 int sig; 1653 sigset_t *mask; 1654 u_long code; 1655 { 1656 struct proc *p = curproc; 1657 struct sigcontext *scp, ksc; 1658 struct trapframe *frame; 1659 struct sigacts *psp = p->p_sigacts; 1660 int onstack, fsize, rndfsize; 1661 1662 frame = p->p_md.md_tf; 1663 1664 /* Do we need to jump onto the signal stack? */ 1665 onstack = 1666 (psp->ps_sigstk.ss_flags & (SS_DISABLE | SS_ONSTACK)) == 0 && 1667 (psp->ps_sigact[sig].sa_flags & SA_ONSTACK) != 0; 1668 1669 /* Allocate space for the signal handler context. */ 1670 fsize = sizeof(ksc); 1671 rndfsize = ((fsize + 15) / 16) * 16; 1672 1673 if (onstack) 1674 scp = (struct sigcontext *)((caddr_t)psp->ps_sigstk.ss_sp + 1675 psp->ps_sigstk.ss_size); 1676 else 1677 scp = (struct sigcontext *)(alpha_pal_rdusp()); 1678 scp = (struct sigcontext *)((caddr_t)scp - rndfsize); 1679 1680 #ifdef DEBUG 1681 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1682 printf("sendsig(%d): sig %d ssp %p usp %p\n", p->p_pid, 1683 sig, &onstack, scp); 1684 #endif 1685 1686 /* Build stack frame for signal trampoline. */ 1687 ksc.sc_pc = frame->tf_regs[FRAME_PC]; 1688 ksc.sc_ps = frame->tf_regs[FRAME_PS]; 1689 1690 /* Save register context. */ 1691 frametoreg(frame, (struct reg *)ksc.sc_regs); 1692 ksc.sc_regs[R_ZERO] = 0xACEDBADE; /* magic number */ 1693 ksc.sc_regs[R_SP] = alpha_pal_rdusp(); 1694 1695 /* save the floating-point state, if necessary, then copy it. */ 1696 if (p == fpcurproc) { 1697 alpha_pal_wrfen(1); 1698 savefpstate(&p->p_addr->u_pcb.pcb_fp); 1699 alpha_pal_wrfen(0); 1700 fpcurproc = NULL; 1701 } 1702 ksc.sc_ownedfp = p->p_md.md_flags & MDP_FPUSED; 1703 bcopy(&p->p_addr->u_pcb.pcb_fp, (struct fpreg *)ksc.sc_fpregs, 1704 sizeof(struct fpreg)); 1705 ksc.sc_fp_control = 0; /* XXX ? */ 1706 bzero(ksc.sc_reserved, sizeof ksc.sc_reserved); /* XXX */ 1707 bzero(ksc.sc_xxx, sizeof ksc.sc_xxx); /* XXX */ 1708 1709 /* Save signal stack. */ 1710 ksc.sc_onstack = psp->ps_sigstk.ss_flags & SS_ONSTACK; 1711 1712 /* Save signal mask. */ 1713 ksc.sc_mask = *mask; 1714 1715 #ifdef COMPAT_13 1716 /* 1717 * XXX We always have to save an old style signal mask because 1718 * XXX we might be delivering a signal to a process which will 1719 * XXX escape from the signal in a non-standard way and invoke 1720 * XXX sigreturn() directly. 1721 */ 1722 { 1723 /* Note: it's a long in the stack frame. */ 1724 sigset13_t mask13; 1725 1726 native_sigset_to_sigset13(mask, &mask13); 1727 ksc.__sc_mask13 = mask13; 1728 } 1729 #endif 1730 1731 #ifdef COMPAT_OSF1 1732 /* 1733 * XXX Create an OSF/1-style sigcontext and associated goo. 1734 */ 1735 #endif 1736 1737 if (copyout(&ksc, (caddr_t)scp, fsize) != 0) { 1738 /* 1739 * Process has trashed its stack; give it an illegal 1740 * instruction to halt it in its tracks. 1741 */ 1742 #ifdef DEBUG 1743 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1744 printf("sendsig(%d): copyout failed on sig %d\n", 1745 p->p_pid, sig); 1746 #endif 1747 sigexit(p, SIGILL); 1748 /* NOTREACHED */ 1749 } 1750 #ifdef DEBUG 1751 if (sigdebug & SDB_FOLLOW) 1752 printf("sendsig(%d): sig %d scp %p code %lx\n", p->p_pid, sig, 1753 scp, code); 1754 #endif 1755 1756 /* Set up the registers to return to sigcode. */ 1757 frame->tf_regs[FRAME_PC] = (u_int64_t)psp->ps_sigcode; 1758 frame->tf_regs[FRAME_A0] = sig; 1759 frame->tf_regs[FRAME_A1] = code; 1760 frame->tf_regs[FRAME_A2] = (u_int64_t)scp; 1761 frame->tf_regs[FRAME_T12] = (u_int64_t)catcher; /* t12 is pv */ 1762 alpha_pal_wrusp((unsigned long)scp); 1763 1764 /* Remember that we're now on the signal stack. */ 1765 if (onstack) 1766 psp->ps_sigstk.ss_flags |= SS_ONSTACK; 1767 1768 #ifdef DEBUG 1769 if (sigdebug & SDB_FOLLOW) 1770 printf("sendsig(%d): pc %lx, catcher %lx\n", p->p_pid, 1771 frame->tf_regs[FRAME_PC], frame->tf_regs[FRAME_A3]); 1772 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1773 printf("sendsig(%d): sig %d returns\n", 1774 p->p_pid, sig); 1775 #endif 1776 } 1777 1778 /* 1779 * System call to cleanup state after a signal 1780 * has been taken. Reset signal mask and 1781 * stack state from context left by sendsig (above). 1782 * Return to previous pc and psl as specified by 1783 * context left by sendsig. Check carefully to 1784 * make sure that the user has not modified the 1785 * psl to gain improper priviledges or to cause 1786 * a machine fault. 1787 */ 1788 /* ARGSUSED */ 1789 int 1790 sys___sigreturn14(p, v, retval) 1791 struct proc *p; 1792 void *v; 1793 register_t *retval; 1794 { 1795 struct sys___sigreturn14_args /* { 1796 syscallarg(struct sigcontext *) sigcntxp; 1797 } */ *uap = v; 1798 struct sigcontext *scp, ksc; 1799 1800 /* 1801 * The trampoline code hands us the context. 1802 * It is unsafe to keep track of it ourselves, in the event that a 1803 * program jumps out of a signal handler. 1804 */ 1805 scp = SCARG(uap, sigcntxp); 1806 #ifdef DEBUG 1807 if (sigdebug & SDB_FOLLOW) 1808 printf("sigreturn: pid %d, scp %p\n", p->p_pid, scp); 1809 #endif 1810 if (ALIGN(scp) != (u_int64_t)scp) 1811 return (EINVAL); 1812 1813 if (copyin((caddr_t)scp, &ksc, sizeof(ksc)) != 0) 1814 return (EFAULT); 1815 1816 if (ksc.sc_regs[R_ZERO] != 0xACEDBADE) /* magic number */ 1817 return (EINVAL); 1818 1819 /* Restore register context. */ 1820 p->p_md.md_tf->tf_regs[FRAME_PC] = ksc.sc_pc; 1821 p->p_md.md_tf->tf_regs[FRAME_PS] = 1822 (ksc.sc_ps | ALPHA_PSL_USERSET) & ~ALPHA_PSL_USERCLR; 1823 1824 regtoframe((struct reg *)ksc.sc_regs, p->p_md.md_tf); 1825 alpha_pal_wrusp(ksc.sc_regs[R_SP]); 1826 1827 /* XXX ksc.sc_ownedfp ? */ 1828 if (p == fpcurproc) 1829 fpcurproc = NULL; 1830 bcopy((struct fpreg *)ksc.sc_fpregs, &p->p_addr->u_pcb.pcb_fp, 1831 sizeof(struct fpreg)); 1832 /* XXX ksc.sc_fp_control ? */ 1833 1834 /* Restore signal stack. */ 1835 if (ksc.sc_onstack & SS_ONSTACK) 1836 p->p_sigacts->ps_sigstk.ss_flags |= SS_ONSTACK; 1837 else 1838 p->p_sigacts->ps_sigstk.ss_flags &= ~SS_ONSTACK; 1839 1840 /* Restore signal mask. */ 1841 (void) sigprocmask1(p, SIG_SETMASK, &ksc.sc_mask, 0); 1842 1843 #ifdef DEBUG 1844 if (sigdebug & SDB_FOLLOW) 1845 printf("sigreturn(%d): returns\n", p->p_pid); 1846 #endif 1847 return (EJUSTRETURN); 1848 } 1849 1850 /* 1851 * machine dependent system variables. 1852 */ 1853 int 1854 cpu_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 1855 int *name; 1856 u_int namelen; 1857 void *oldp; 1858 size_t *oldlenp; 1859 void *newp; 1860 size_t newlen; 1861 struct proc *p; 1862 { 1863 dev_t consdev; 1864 1865 /* all sysctl names at this level are terminal */ 1866 if (namelen != 1) 1867 return (ENOTDIR); /* overloaded */ 1868 1869 switch (name[0]) { 1870 case CPU_CONSDEV: 1871 if (cn_tab != NULL) 1872 consdev = cn_tab->cn_dev; 1873 else 1874 consdev = NODEV; 1875 return (sysctl_rdstruct(oldp, oldlenp, newp, &consdev, 1876 sizeof consdev)); 1877 1878 case CPU_ROOT_DEVICE: 1879 return (sysctl_rdstring(oldp, oldlenp, newp, 1880 root_device->dv_xname)); 1881 1882 case CPU_UNALIGNED_PRINT: 1883 return (sysctl_int(oldp, oldlenp, newp, newlen, 1884 &alpha_unaligned_print)); 1885 1886 case CPU_UNALIGNED_FIX: 1887 return (sysctl_int(oldp, oldlenp, newp, newlen, 1888 &alpha_unaligned_fix)); 1889 1890 case CPU_UNALIGNED_SIGBUS: 1891 return (sysctl_int(oldp, oldlenp, newp, newlen, 1892 &alpha_unaligned_sigbus)); 1893 1894 case CPU_BOOTED_KERNEL: 1895 return (sysctl_rdstring(oldp, oldlenp, newp, 1896 bootinfo.booted_kernel)); 1897 1898 default: 1899 return (EOPNOTSUPP); 1900 } 1901 /* NOTREACHED */ 1902 } 1903 1904 /* 1905 * Set registers on exec. 1906 */ 1907 void 1908 setregs(p, pack, stack) 1909 register struct proc *p; 1910 struct exec_package *pack; 1911 u_long stack; 1912 { 1913 struct trapframe *tfp = p->p_md.md_tf; 1914 #ifdef DEBUG 1915 int i; 1916 #endif 1917 1918 #ifdef DEBUG 1919 /* 1920 * Crash and dump, if the user requested it. 1921 */ 1922 if (boothowto & RB_DUMP) 1923 panic("crash requested by boot flags"); 1924 #endif 1925 1926 #ifdef DEBUG 1927 for (i = 0; i < FRAME_SIZE; i++) 1928 tfp->tf_regs[i] = 0xbabefacedeadbeef; 1929 #else 1930 bzero(tfp->tf_regs, FRAME_SIZE * sizeof tfp->tf_regs[0]); 1931 #endif 1932 bzero(&p->p_addr->u_pcb.pcb_fp, sizeof p->p_addr->u_pcb.pcb_fp); 1933 #define FP_RN 2 /* XXX */ 1934 p->p_addr->u_pcb.pcb_fp.fpr_cr = (long)FP_RN << 58; 1935 alpha_pal_wrusp(stack); 1936 tfp->tf_regs[FRAME_PS] = ALPHA_PSL_USERSET; 1937 tfp->tf_regs[FRAME_PC] = pack->ep_entry & ~3; 1938 1939 tfp->tf_regs[FRAME_A0] = stack; /* a0 = sp */ 1940 tfp->tf_regs[FRAME_A1] = 0; /* a1 = rtld cleanup */ 1941 tfp->tf_regs[FRAME_A2] = 0; /* a2 = rtld object */ 1942 tfp->tf_regs[FRAME_A3] = (u_int64_t)PS_STRINGS; /* a3 = ps_strings */ 1943 tfp->tf_regs[FRAME_T12] = tfp->tf_regs[FRAME_PC]; /* a.k.a. PV */ 1944 1945 p->p_md.md_flags &= ~MDP_FPUSED; 1946 if (fpcurproc == p) 1947 fpcurproc = NULL; 1948 } 1949 1950 void 1951 netintr() 1952 { 1953 int n, s; 1954 1955 s = splhigh(); 1956 n = netisr; 1957 netisr = 0; 1958 splx(s); 1959 1960 #define DONETISR(bit, fn) \ 1961 do { \ 1962 if (n & (1 << (bit))) \ 1963 fn; \ 1964 } while (0) 1965 1966 #ifdef INET 1967 #if NARP > 0 1968 DONETISR(NETISR_ARP, arpintr()); 1969 #endif 1970 DONETISR(NETISR_IP, ipintr()); 1971 #endif 1972 #ifdef NETATALK 1973 DONETISR(NETISR_ATALK, atintr()); 1974 #endif 1975 #ifdef NS 1976 DONETISR(NETISR_NS, nsintr()); 1977 #endif 1978 #ifdef ISO 1979 DONETISR(NETISR_ISO, clnlintr()); 1980 #endif 1981 #ifdef CCITT 1982 DONETISR(NETISR_CCITT, ccittintr()); 1983 #endif 1984 #ifdef NATM 1985 DONETISR(NETISR_NATM, natmintr()); 1986 #endif 1987 #if NPPP > 1 1988 DONETISR(NETISR_PPP, pppintr()); 1989 #endif 1990 1991 #undef DONETISR 1992 } 1993 1994 void 1995 do_sir() 1996 { 1997 u_int64_t n; 1998 1999 do { 2000 (void)splhigh(); 2001 n = ssir; 2002 ssir = 0; 2003 splsoft(); /* don't recurse through spl0() */ 2004 2005 #define COUNT_SOFT uvmexp.softs++ 2006 2007 #define DO_SIR(bit, fn) \ 2008 do { \ 2009 if (n & (bit)) { \ 2010 COUNT_SOFT; \ 2011 fn; \ 2012 } \ 2013 } while (0) 2014 2015 DO_SIR(SIR_NET, netintr()); 2016 DO_SIR(SIR_CLOCK, softclock()); 2017 #if NCOM > 0 2018 DO_SIR(SIR_SERIAL, comsoft()); 2019 #endif 2020 2021 #undef COUNT_SOFT 2022 #undef DO_SIR 2023 } while (ssir != 0); 2024 } 2025 2026 int 2027 spl0() 2028 { 2029 2030 if (ssir) 2031 do_sir(); /* it lowers the IPL itself */ 2032 2033 return (alpha_pal_swpipl(ALPHA_PSL_IPL_0)); 2034 } 2035 2036 /* 2037 * The following primitives manipulate the run queues. _whichqs tells which 2038 * of the 32 queues _qs have processes in them. Setrunqueue puts processes 2039 * into queues, Remrunqueue removes them from queues. The running process is 2040 * on no queue, other processes are on a queue related to p->p_priority, 2041 * divided by 4 actually to shrink the 0-127 range of priorities into the 32 2042 * available queues. 2043 */ 2044 /* 2045 * setrunqueue(p) 2046 * proc *p; 2047 * 2048 * Call should be made at splclock(), and p->p_stat should be SRUN. 2049 */ 2050 2051 void 2052 setrunqueue(p) 2053 struct proc *p; 2054 { 2055 int bit; 2056 2057 /* firewall: p->p_back must be NULL */ 2058 if (p->p_back != NULL) 2059 panic("setrunqueue"); 2060 2061 bit = p->p_priority >> 2; 2062 whichqs |= (1 << bit); 2063 p->p_forw = (struct proc *)&qs[bit]; 2064 p->p_back = qs[bit].ph_rlink; 2065 p->p_back->p_forw = p; 2066 qs[bit].ph_rlink = p; 2067 } 2068 2069 /* 2070 * remrunqueue(p) 2071 * 2072 * Call should be made at splclock(). 2073 */ 2074 void 2075 remrunqueue(p) 2076 struct proc *p; 2077 { 2078 int bit; 2079 2080 bit = p->p_priority >> 2; 2081 if ((whichqs & (1 << bit)) == 0) 2082 panic("remrunqueue"); 2083 2084 p->p_back->p_forw = p->p_forw; 2085 p->p_forw->p_back = p->p_back; 2086 p->p_back = NULL; /* for firewall checking. */ 2087 2088 if ((struct proc *)&qs[bit] == qs[bit].ph_link) 2089 whichqs &= ~(1 << bit); 2090 } 2091 2092 /* 2093 * Return the best possible estimate of the time in the timeval 2094 * to which tvp points. Unfortunately, we can't read the hardware registers. 2095 * We guarantee that the time will be greater than the value obtained by a 2096 * previous call. 2097 */ 2098 void 2099 microtime(tvp) 2100 register struct timeval *tvp; 2101 { 2102 int s = splclock(); 2103 static struct timeval lasttime; 2104 2105 *tvp = time; 2106 #ifdef notdef 2107 tvp->tv_usec += clkread(); 2108 while (tvp->tv_usec > 1000000) { 2109 tvp->tv_sec++; 2110 tvp->tv_usec -= 1000000; 2111 } 2112 #endif 2113 if (tvp->tv_sec == lasttime.tv_sec && 2114 tvp->tv_usec <= lasttime.tv_usec && 2115 (tvp->tv_usec = lasttime.tv_usec + 1) > 1000000) { 2116 tvp->tv_sec++; 2117 tvp->tv_usec -= 1000000; 2118 } 2119 lasttime = *tvp; 2120 splx(s); 2121 } 2122 2123 /* 2124 * Wait "n" microseconds. 2125 */ 2126 void 2127 delay(n) 2128 unsigned long n; 2129 { 2130 long N = cycles_per_usec * (n); 2131 2132 while (N > 0) /* XXX */ 2133 N -= 3; /* XXX */ 2134 } 2135 2136 #if defined(COMPAT_OSF1) || 1 /* XXX */ 2137 void cpu_exec_ecoff_setregs __P((struct proc *, struct exec_package *, 2138 u_long)); 2139 2140 void 2141 cpu_exec_ecoff_setregs(p, epp, stack) 2142 struct proc *p; 2143 struct exec_package *epp; 2144 u_long stack; 2145 { 2146 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2147 2148 setregs(p, epp, stack); 2149 p->p_md.md_tf->tf_regs[FRAME_GP] = execp->a.gp_value; 2150 } 2151 2152 /* 2153 * cpu_exec_ecoff_hook(): 2154 * cpu-dependent ECOFF format hook for execve(). 2155 * 2156 * Do any machine-dependent diddling of the exec package when doing ECOFF. 2157 * 2158 */ 2159 int 2160 cpu_exec_ecoff_hook(p, epp) 2161 struct proc *p; 2162 struct exec_package *epp; 2163 { 2164 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2165 extern struct emul emul_netbsd; 2166 #ifdef COMPAT_OSF1 2167 extern struct emul emul_osf1; 2168 #endif 2169 2170 switch (execp->f.f_magic) { 2171 #ifdef COMPAT_OSF1 2172 case ECOFF_MAGIC_ALPHA: 2173 epp->ep_emul = &emul_osf1; 2174 break; 2175 #endif 2176 2177 case ECOFF_MAGIC_NETBSD_ALPHA: 2178 epp->ep_emul = &emul_netbsd; 2179 break; 2180 2181 default: 2182 return ENOEXEC; 2183 } 2184 return 0; 2185 } 2186 #endif 2187 2188 int 2189 alpha_pa_access(pa) 2190 u_long pa; 2191 { 2192 int i; 2193 2194 for (i = 0; i < mem_cluster_cnt; i++) { 2195 if (pa < mem_clusters[i].start) 2196 continue; 2197 if ((pa - mem_clusters[i].start) >= 2198 (mem_clusters[i].size & ~PAGE_MASK)) 2199 continue; 2200 return (mem_clusters[i].size & PAGE_MASK); /* prot */ 2201 } 2202 return (PROT_NONE); 2203 } 2204 2205 /* XXX XXX BEGIN XXX XXX */ 2206 paddr_t alpha_XXX_dmamap_or; /* XXX */ 2207 /* XXX */ 2208 paddr_t /* XXX */ 2209 alpha_XXX_dmamap(v) /* XXX */ 2210 vaddr_t v; /* XXX */ 2211 { /* XXX */ 2212 /* XXX */ 2213 return (vtophys(v) | alpha_XXX_dmamap_or); /* XXX */ 2214 } /* XXX */ 2215 /* XXX XXX END XXX XXX */ 2216 2217 struct mchkinfo * 2218 cpu_mchkinfo() 2219 { 2220 if (mchkinfo_all_cpus == NULL) 2221 return &startup_info; 2222 return mchkinfo_all_cpus + alpha_pal_whami(); 2223 } 2224
Indexes created Tue Sep 30 20:09:53 GMT 2025