machdep.c revision 1.168
1 /* $NetBSD: machdep.c,v 1.168 1999/04/11 04:04:04 chs Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center and by Chris G. Demetriou. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /* 41 * Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University. 42 * All rights reserved. 43 * 44 * Author: Chris G. Demetriou 45 * 46 * Permission to use, copy, modify and distribute this software and 47 * its documentation is hereby granted, provided that both the copyright 48 * notice and this permission notice appear in all copies of the 49 * software, derivative works or modified versions, and any portions 50 * thereof, and that both notices appear in supporting documentation. 51 * 52 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 53 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 54 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 55 * 56 * Carnegie Mellon requests users of this software to return to 57 * 58 * Software Distribution Coordinator or Software.Distribution (at) CS.CMU.EDU 59 * School of Computer Science 60 * Carnegie Mellon University 61 * Pittsburgh PA 15213-3890 62 * 63 * any improvements or extensions that they make and grant Carnegie the 64 * rights to redistribute these changes. 65 */ 66 67 #include "opt_bufcache.h" 68 #include "opt_ddb.h" 69 #include "opt_multiprocessor.h" 70 #include "opt_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 1.168 1999/04/11 04:04:04 chs 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 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 448 if (!pmap_uses_prom_console()) 449 #endif 450 (*platform.cons_init)(); 451 452 #ifdef DIAGNOSTIC 453 /* Paranoid sanity checking */ 454 455 /* We should always be running on the the primary. */ 456 assert(hwrpb->rpb_primary_cpu_id == alpha_pal_whami()); 457 458 /* 459 * On single-CPU systypes, the primary should always be CPU 0, 460 * except on Alpha 8200 systems where the CPU id is related 461 * to the VID, which is related to the Turbo Laser node id. 462 */ 463 if (cputype != ST_DEC_21000) 464 assert(hwrpb->rpb_primary_cpu_id == 0); 465 #endif 466 467 /* NO MORE FIRMWARE ACCESS ALLOWED */ 468 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 469 /* 470 * XXX (unless _PMAP_MAY_USE_PROM_CONSOLE is defined and 471 * XXX pmap_uses_prom_console() evaluates to non-zero.) 472 */ 473 #endif 474 475 /* 476 * find out this system's page size 477 */ 478 PAGE_SIZE = hwrpb->rpb_page_size; 479 if (PAGE_SIZE != 8192) 480 panic("page size %d != 8192?!", PAGE_SIZE); 481 482 /* 483 * Initialize PAGE_SIZE-dependent variables. 484 */ 485 uvm_setpagesize(); 486 487 /* 488 * Find the beginning and end of the kernel (and leave a 489 * bit of space before the beginning for the bootstrap 490 * stack). 491 */ 492 kernstart = trunc_page(kernel_text) - 2 * PAGE_SIZE; 493 #ifdef DDB 494 ksym_start = (void *)bootinfo.ssym; 495 ksym_end = (void *)bootinfo.esym; 496 kernend = (vaddr_t)round_page(ksym_end); 497 #else 498 kernend = (vaddr_t)round_page(_end); 499 #endif 500 501 kernstartpfn = atop(ALPHA_K0SEG_TO_PHYS(kernstart)); 502 kernendpfn = atop(ALPHA_K0SEG_TO_PHYS(kernend)); 503 504 /* 505 * Find out how much memory is available, by looking at 506 * the memory cluster descriptors. This also tries to do 507 * its best to detect things things that have never been seen 508 * before... 509 */ 510 mddtp = (struct mddt *)(((caddr_t)hwrpb) + hwrpb->rpb_memdat_off); 511 512 /* MDDT SANITY CHECKING */ 513 mddtweird = 0; 514 if (mddtp->mddt_cluster_cnt < 2) { 515 mddtweird = 1; 516 printf("WARNING: weird number of mem clusters: %lu\n", 517 mddtp->mddt_cluster_cnt); 518 } 519 520 #if 0 521 printf("Memory cluster count: %d\n", mddtp->mddt_cluster_cnt); 522 #endif 523 524 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 525 memc = &mddtp->mddt_clusters[i]; 526 #if 0 527 printf("MEMC %d: pfn 0x%lx cnt 0x%lx usage 0x%lx\n", i, 528 memc->mddt_pfn, memc->mddt_pg_cnt, memc->mddt_usage); 529 #endif 530 totalphysmem += memc->mddt_pg_cnt; 531 if (mem_cluster_cnt < VM_PHYSSEG_MAX) { /* XXX */ 532 mem_clusters[mem_cluster_cnt].start = 533 ptoa(memc->mddt_pfn); 534 mem_clusters[mem_cluster_cnt].size = 535 ptoa(memc->mddt_pg_cnt); 536 if (memc->mddt_usage & MDDT_mbz || 537 memc->mddt_usage & MDDT_NONVOLATILE || /* XXX */ 538 memc->mddt_usage & MDDT_PALCODE) 539 mem_clusters[mem_cluster_cnt].size |= 540 PROT_READ; 541 else 542 mem_clusters[mem_cluster_cnt].size |= 543 PROT_READ | PROT_WRITE | PROT_EXEC; 544 mem_cluster_cnt++; 545 } 546 547 if (memc->mddt_usage & MDDT_mbz) { 548 mddtweird = 1; 549 printf("WARNING: mem cluster %d has weird " 550 "usage 0x%lx\n", i, memc->mddt_usage); 551 unknownmem += memc->mddt_pg_cnt; 552 continue; 553 } 554 if (memc->mddt_usage & MDDT_NONVOLATILE) { 555 /* XXX should handle these... */ 556 printf("WARNING: skipping non-volatile mem " 557 "cluster %d\n", i); 558 unusedmem += memc->mddt_pg_cnt; 559 continue; 560 } 561 if (memc->mddt_usage & MDDT_PALCODE) { 562 resvmem += memc->mddt_pg_cnt; 563 continue; 564 } 565 566 /* 567 * We have a memory cluster available for system 568 * software use. We must determine if this cluster 569 * holds the kernel. 570 */ 571 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 572 /* 573 * XXX If the kernel uses the PROM console, we only use the 574 * XXX memory after the kernel in the first system segment, 575 * XXX to avoid clobbering prom mapping, data, etc. 576 */ 577 if (!pmap_uses_prom_console() || physmem == 0) { 578 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 579 physmem += memc->mddt_pg_cnt; 580 pfn0 = memc->mddt_pfn; 581 pfn1 = memc->mddt_pfn + memc->mddt_pg_cnt; 582 if (pfn0 <= kernstartpfn && kernendpfn <= pfn1) { 583 /* 584 * Must compute the location of the kernel 585 * within the segment. 586 */ 587 #if 0 588 printf("Cluster %d contains kernel\n", i); 589 #endif 590 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 591 if (!pmap_uses_prom_console()) { 592 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 593 if (pfn0 < kernstartpfn) { 594 /* 595 * There is a chunk before the kernel. 596 */ 597 #if 0 598 printf("Loading chunk before kernel: " 599 "0x%lx / 0x%lx\n", pfn0, kernstartpfn); 600 #endif 601 uvm_page_physload(pfn0, kernstartpfn, 602 pfn0, kernstartpfn, VM_FREELIST_DEFAULT); 603 } 604 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 605 } 606 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 607 if (kernendpfn < pfn1) { 608 /* 609 * There is a chunk after the kernel. 610 */ 611 #if 0 612 printf("Loading chunk after kernel: " 613 "0x%lx / 0x%lx\n", kernendpfn, pfn1); 614 #endif 615 uvm_page_physload(kernendpfn, pfn1, 616 kernendpfn, pfn1, VM_FREELIST_DEFAULT); 617 } 618 } else { 619 /* 620 * Just load this cluster as one chunk. 621 */ 622 #if 0 623 printf("Loading cluster %d: 0x%lx / 0x%lx\n", i, 624 pfn0, pfn1); 625 #endif 626 uvm_page_physload(pfn0, pfn1, pfn0, pfn1, 627 VM_FREELIST_DEFAULT); 628 } 629 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 630 } 631 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 632 } 633 634 /* 635 * Dump out the MDDT if it looks odd... 636 */ 637 if (mddtweird) { 638 printf("\n"); 639 printf("complete memory cluster information:\n"); 640 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 641 printf("mddt %d:\n", i); 642 printf("\tpfn %lx\n", 643 mddtp->mddt_clusters[i].mddt_pfn); 644 printf("\tcnt %lx\n", 645 mddtp->mddt_clusters[i].mddt_pg_cnt); 646 printf("\ttest %lx\n", 647 mddtp->mddt_clusters[i].mddt_pg_test); 648 printf("\tbva %lx\n", 649 mddtp->mddt_clusters[i].mddt_v_bitaddr); 650 printf("\tbpa %lx\n", 651 mddtp->mddt_clusters[i].mddt_p_bitaddr); 652 printf("\tbcksum %lx\n", 653 mddtp->mddt_clusters[i].mddt_bit_cksum); 654 printf("\tusage %lx\n", 655 mddtp->mddt_clusters[i].mddt_usage); 656 } 657 printf("\n"); 658 } 659 660 if (totalphysmem == 0) 661 panic("can't happen: system seems to have no memory!"); 662 663 #ifdef LIMITMEM 664 /* 665 * XXX Kludge so we can run on machines with memory larger 666 * XXX than 1G until all device drivers are converted to 667 * XXX use bus_dma. (Relies on the fact that vm_physmem 668 * XXX sorted in order of increasing addresses.) 669 */ 670 if (vm_physmem[vm_nphysseg - 1].end > atop(LIMITMEM * 1024 * 1024)) { 671 672 printf("******** LIMITING MEMORY TO %dMB **********\n", 673 LIMITMEM); 674 675 do { 676 u_long ovf; 677 678 vps = &vm_physmem[vm_nphysseg - 1]; 679 680 if (vps->start >= atop(LIMITMEM * 1024 * 1024)) { 681 /* 682 * If the start is too high, just drop 683 * the whole segment. 684 * 685 * XXX can start != avail_start in this 686 * XXX case? wouldn't that mean that 687 * XXX some memory was stolen above the 688 * XXX limit? What to do? 689 */ 690 ovf = vps->end - vps->start; 691 vm_nphysseg--; 692 } else { 693 /* 694 * If the start is OK, calculate how much 695 * to drop and drop it. 696 */ 697 ovf = vps->end - atop(LIMITMEM * 1024 * 1024); 698 vps->end -= ovf; 699 vps->avail_end -= ovf; 700 } 701 physmem -= ovf; 702 unusedmem += ovf; 703 } while (vps->end > atop(LIMITMEM * 1024 * 1024)); 704 } 705 #endif /* LIMITMEM */ 706 707 maxmem = physmem; 708 709 #if 0 710 printf("totalphysmem = %d\n", totalphysmem); 711 printf("physmem = %d\n", physmem); 712 printf("resvmem = %d\n", resvmem); 713 printf("unusedmem = %d\n", unusedmem); 714 printf("unknownmem = %d\n", unknownmem); 715 #endif 716 717 /* 718 * Adjust some parameters if the amount of physmem 719 * available would cause us to croak. This is completely 720 * eyeballed and isn't meant to be the final answer. 721 * vm_phys_size is probably the only one to really worry 722 * about. 723 * 724 * It's for booting a GENERIC kernel on a large memory platform. 725 */ 726 if (physmem >= atop(128 * 1024 * 1024)) { 727 vm_kmem_size <<= 3; 728 vm_phys_size <<= 2; 729 } 730 731 /* 732 * Initialize error message buffer (at end of core). 733 */ 734 { 735 size_t sz = round_page(MSGBUFSIZE); 736 737 vps = &vm_physmem[vm_nphysseg - 1]; 738 739 /* shrink so that it'll fit in the last segment */ 740 if ((vps->avail_end - vps->avail_start) < atop(sz)) 741 sz = ptoa(vps->avail_end - vps->avail_start); 742 743 vps->end -= atop(sz); 744 vps->avail_end -= atop(sz); 745 msgbufaddr = (caddr_t) ALPHA_PHYS_TO_K0SEG(ptoa(vps->end)); 746 initmsgbuf(msgbufaddr, sz); 747 748 /* Remove the last segment if it now has no pages. */ 749 if (vps->start == vps->end) 750 vm_nphysseg--; 751 752 /* warn if the message buffer had to be shrunk */ 753 if (sz != round_page(MSGBUFSIZE)) 754 printf("WARNING: %ld bytes not available for msgbuf in last cluster (%ld used)\n", 755 round_page(MSGBUFSIZE), sz); 756 757 } 758 759 /* 760 * Init mapping for u page(s) for proc 0 761 */ 762 proc0.p_addr = proc0paddr = 763 (struct user *)pmap_steal_memory(UPAGES * PAGE_SIZE, NULL, NULL); 764 765 /* 766 * Allocate space for system data structures. These data structures 767 * are allocated here instead of cpu_startup() because physical 768 * memory is directly addressable. We don't have to map these into 769 * virtual address space. 770 */ 771 size = (vsize_t)allocsys(0); 772 v = (caddr_t)pmap_steal_memory(size, NULL, NULL); 773 if ((allocsys(v) - v) != size) 774 panic("alpha_init: table size inconsistency"); 775 776 /* 777 * Initialize the virtual memory system, and set the 778 * page table base register in proc 0's PCB. 779 */ 780 pmap_bootstrap(ALPHA_PHYS_TO_K0SEG(ptb << PGSHIFT), 781 hwrpb->rpb_max_asn, hwrpb->rpb_pcs_cnt); 782 783 /* 784 * Initialize the rest of proc 0's PCB, and cache its physical 785 * address. 786 */ 787 proc0.p_md.md_pcbpaddr = 788 (struct pcb *)ALPHA_K0SEG_TO_PHYS((vaddr_t)&proc0paddr->u_pcb); 789 790 /* 791 * Set the kernel sp, reserving space for an (empty) trapframe, 792 * and make proc0's trapframe pointer point to it for sanity. 793 */ 794 proc0paddr->u_pcb.pcb_hw.apcb_ksp = 795 (u_int64_t)proc0paddr + USPACE - sizeof(struct trapframe); 796 proc0.p_md.md_tf = 797 (struct trapframe *)proc0paddr->u_pcb.pcb_hw.apcb_ksp; 798 799 /* 800 * Look at arguments passed to us and compute boothowto. 801 */ 802 803 boothowto = RB_SINGLE; 804 #ifdef KADB 805 boothowto |= RB_KDB; 806 #endif 807 for (p = bootinfo.boot_flags; p && *p != '\0'; p++) { 808 /* 809 * Note that we'd really like to differentiate case here, 810 * but the Alpha AXP Architecture Reference Manual 811 * says that we shouldn't. 812 */ 813 switch (*p) { 814 case 'a': /* autoboot */ 815 case 'A': 816 boothowto &= ~RB_SINGLE; 817 break; 818 819 #ifdef DEBUG 820 case 'c': /* crash dump immediately after autoconfig */ 821 case 'C': 822 boothowto |= RB_DUMP; 823 break; 824 #endif 825 826 #if defined(KGDB) || defined(DDB) 827 case 'd': /* break into the kernel debugger ASAP */ 828 case 'D': 829 boothowto |= RB_KDB; 830 break; 831 #endif 832 833 case 'h': /* always halt, never reboot */ 834 case 'H': 835 boothowto |= RB_HALT; 836 break; 837 838 #if 0 839 case 'm': /* mini root present in memory */ 840 case 'M': 841 boothowto |= RB_MINIROOT; 842 break; 843 #endif 844 845 case 'n': /* askname */ 846 case 'N': 847 boothowto |= RB_ASKNAME; 848 break; 849 850 case 's': /* single-user (default, supported for sanity) */ 851 case 'S': 852 boothowto |= RB_SINGLE; 853 break; 854 855 case '-': 856 /* 857 * Just ignore this. It's not required, but it's 858 * common for it to be passed regardless. 859 */ 860 break; 861 862 default: 863 printf("Unrecognized boot flag '%c'.\n", *p); 864 break; 865 } 866 } 867 868 869 /* 870 * Figure out the number of cpus in the box, from RPB fields. 871 * Really. We mean it. 872 */ 873 for (i = 0; i < hwrpb->rpb_pcs_cnt; i++) { 874 struct pcs *pcsp; 875 876 pcsp = LOCATE_PCS(hwrpb, i); 877 if ((pcsp->pcs_flags & PCS_PP) != 0) 878 ncpus++; 879 } 880 881 /* 882 * Initialize debuggers, and break into them if appropriate. 883 */ 884 #ifdef DDB 885 db_machine_init(); 886 ddb_init((int)((u_int64_t)ksym_end - (u_int64_t)ksym_start), 887 ksym_start, ksym_end); 888 if (boothowto & RB_KDB) 889 Debugger(); 890 #endif 891 #ifdef KGDB 892 if (boothowto & RB_KDB) 893 kgdb_connect(0); 894 #endif 895 /* 896 * Figure out our clock frequency, from RPB fields. 897 */ 898 hz = hwrpb->rpb_intr_freq >> 12; 899 if (!(60 <= hz && hz <= 10240)) { 900 hz = 1024; 901 #ifdef DIAGNOSTIC 902 printf("WARNING: unbelievable rpb_intr_freq: %ld (%d hz)\n", 903 hwrpb->rpb_intr_freq, hz); 904 #endif 905 } 906 } 907 908 /* 909 * Allocate space for system data structures. We are given 910 * a starting virtual address and we return a final virtual 911 * address; along the way we set each data structure pointer. 912 * 913 * We call allocsys() with 0 to find out how much space we want, 914 * allocate that much and fill it with zeroes, and the call 915 * allocsys() again with the correct base virtual address. 916 */ 917 caddr_t 918 allocsys(v) 919 caddr_t v; 920 { 921 922 #define valloc(name, type, num) \ 923 (name) = (type *)v; v = (caddr_t)ALIGN((name)+(num)) 924 925 #ifdef REAL_CLISTS 926 valloc(cfree, struct cblock, nclist); 927 #endif 928 valloc(callout, struct callout, ncallout); 929 #ifdef SYSVSHM 930 valloc(shmsegs, struct shmid_ds, shminfo.shmmni); 931 #endif 932 #ifdef SYSVSEM 933 valloc(sema, struct semid_ds, seminfo.semmni); 934 valloc(sem, struct sem, seminfo.semmns); 935 /* This is pretty disgusting! */ 936 valloc(semu, int, (seminfo.semmnu * seminfo.semusz) / sizeof(int)); 937 #endif 938 #ifdef SYSVMSG 939 valloc(msgpool, char, msginfo.msgmax); 940 valloc(msgmaps, struct msgmap, msginfo.msgseg); 941 valloc(msghdrs, struct msg, msginfo.msgtql); 942 valloc(msqids, struct msqid_ds, msginfo.msgmni); 943 #endif 944 945 /* 946 * Determine how many buffers to allocate. 947 * We allocate bufcache % of memory for buffer space. Insure a 948 * minimum of 16 buffers. We allocate 1/2 as many swap buffer 949 * headers as file i/o buffers. 950 */ 951 if (bufpages == 0) 952 bufpages = physmem / CLSIZE * bufcache / 100; 953 if (nbuf == 0) { 954 nbuf = bufpages; 955 if (nbuf < 16) 956 nbuf = 16; 957 } 958 if (nswbuf == 0) { 959 nswbuf = (nbuf / 2) &~ 1; /* force even */ 960 if (nswbuf > 256) 961 nswbuf = 256; /* sanity */ 962 } 963 valloc(buf, struct buf, nbuf); 964 965 /* 966 * There appears to be a correlation between the number 967 * of processor slots defined in the HWRPB and the whami 968 * value that can be returned. 969 */ 970 valloc(mchkinfo_all_cpus, struct mchkinfo, hwrpb->rpb_pcs_cnt); 971 972 return (v); 973 #undef valloc 974 } 975 976 void 977 consinit() 978 { 979 980 /* 981 * Everything related to console initialization is done 982 * in alpha_init(). 983 */ 984 #if defined(DIAGNOSTIC) && defined(_PMAP_MAY_USE_PROM_CONSOLE) 985 printf("consinit: %susing prom console\n", 986 pmap_uses_prom_console() ? "" : "not "); 987 #endif 988 } 989 990 #include "pckbc.h" 991 #include "pckbd.h" 992 #if (NPCKBC > 0) && (NPCKBD == 0) 993 994 #include <dev/isa/pckbcvar.h> 995 996 /* 997 * This is called by the pbkbc driver if no pckbd is configured. 998 * On the i386, it is used to glue in the old, deprecated console 999 * code. On the Alpha, it does nothing. 1000 */ 1001 int 1002 pckbc_machdep_cnattach(kbctag, kbcslot) 1003 pckbc_tag_t kbctag; 1004 pckbc_slot_t kbcslot; 1005 { 1006 1007 return (ENXIO); 1008 } 1009 #endif /* NPCKBC > 0 && NPCKBD == 0 */ 1010 1011 void 1012 cpu_startup() 1013 { 1014 register unsigned i; 1015 int base, residual; 1016 vaddr_t minaddr, maxaddr; 1017 vsize_t size; 1018 #if defined(DEBUG) 1019 extern int pmapdebug; 1020 int opmapdebug = pmapdebug; 1021 1022 pmapdebug = 0; 1023 #endif 1024 1025 /* 1026 * Good {morning,afternoon,evening,night}. 1027 */ 1028 printf(version); 1029 identifycpu(); 1030 printf("real mem = %lu (%lu reserved for PROM, %lu used by NetBSD)\n", 1031 ((psize_t) totalphysmem << (psize_t) PAGE_SHIFT), 1032 ptoa(resvmem), ptoa(physmem)); 1033 if (unusedmem) 1034 printf("WARNING: unused memory = %d bytes\n", ctob(unusedmem)); 1035 if (unknownmem) 1036 printf("WARNING: %d bytes of memory with unknown purpose\n", 1037 ctob(unknownmem)); 1038 1039 /* 1040 * Allocate virtual address space for file I/O buffers. 1041 * Note they are different than the array of headers, 'buf', 1042 * and usually occupy more virtual memory than physical. 1043 */ 1044 size = MAXBSIZE * nbuf; 1045 if (uvm_map(kernel_map, (vaddr_t *) &buffers, round_page(size), 1046 NULL, UVM_UNKNOWN_OFFSET, 1047 UVM_MAPFLAG(UVM_PROT_NONE, UVM_PROT_NONE, UVM_INH_NONE, 1048 UVM_ADV_NORMAL, 0)) != KERN_SUCCESS) 1049 panic("startup: cannot allocate VM for buffers"); 1050 base = bufpages / nbuf; 1051 residual = bufpages % nbuf; 1052 for (i = 0; i < nbuf; i++) { 1053 vsize_t curbufsize; 1054 vaddr_t curbuf; 1055 struct vm_page *pg; 1056 1057 /* 1058 * Each buffer has MAXBSIZE bytes of VM space allocated. Of 1059 * that MAXBSIZE space, we allocate and map (base+1) pages 1060 * for the first "residual" buffers, and then we allocate 1061 * "base" pages for the rest. 1062 */ 1063 curbuf = (vaddr_t) buffers + (i * MAXBSIZE); 1064 curbufsize = CLBYTES * ((i < residual) ? (base+1) : base); 1065 1066 while (curbufsize) { 1067 pg = uvm_pagealloc(NULL, 0, NULL, 0); 1068 if (pg == NULL) 1069 panic("cpu_startup: not enough memory for " 1070 "buffer cache"); 1071 #if defined(PMAP_NEW) 1072 pmap_kenter_pgs(curbuf, &pg, 1); 1073 #else 1074 pmap_enter(kernel_map->pmap, curbuf, 1075 VM_PAGE_TO_PHYS(pg), VM_PROT_READ|VM_PROT_WRITE, 1076 TRUE, VM_PROT_READ|VM_PROT_WRITE); 1077 #endif 1078 curbuf += PAGE_SIZE; 1079 curbufsize -= PAGE_SIZE; 1080 } 1081 } 1082 /* 1083 * Allocate a submap for exec arguments. This map effectively 1084 * limits the number of processes exec'ing at any time. 1085 */ 1086 exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 1087 16 * NCARGS, TRUE, FALSE, NULL); 1088 1089 /* 1090 * Allocate a submap for physio 1091 */ 1092 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 1093 VM_PHYS_SIZE, TRUE, FALSE, NULL); 1094 1095 /* 1096 * No need to allocate an mbuf cluster submap. Mbuf clusters 1097 * are allocated via the pool allocator, and we use K0SEG to 1098 * map those pages. 1099 */ 1100 1101 /* 1102 * Initialize callouts 1103 */ 1104 callfree = callout; 1105 for (i = 1; i < ncallout; i++) 1106 callout[i-1].c_next = &callout[i]; 1107 callout[i-1].c_next = NULL; 1108 1109 #if defined(DEBUG) 1110 pmapdebug = opmapdebug; 1111 #endif 1112 printf("avail mem = %ld\n", (long)ptoa(uvmexp.free)); 1113 #if 0 1114 { 1115 extern u_long pmap_pages_stolen; 1116 printf("stolen memory for VM structures = %ld bytes\n", 1117 pmap_pages_stolen * PAGE_SIZE); 1118 } 1119 #endif 1120 printf("using %ld buffers containing %ld bytes of memory\n", 1121 (long)nbuf, (long)(bufpages * CLBYTES)); 1122 1123 /* 1124 * Set up buffers, so they can be used to read disk labels. 1125 */ 1126 bufinit(); 1127 1128 /* 1129 * Set up the HWPCB so that it's safe to configure secondary 1130 * CPUs. 1131 */ 1132 hwrpb_primary_init(); 1133 } 1134 1135 /* 1136 * Retrieve the platform name from the DSR. 1137 */ 1138 const char * 1139 alpha_dsr_sysname() 1140 { 1141 struct dsrdb *dsr; 1142 const char *sysname; 1143 1144 /* 1145 * DSR does not exist on early HWRPB versions. 1146 */ 1147 if (hwrpb->rpb_version < HWRPB_DSRDB_MINVERS) 1148 return (NULL); 1149 1150 dsr = (struct dsrdb *)(((caddr_t)hwrpb) + hwrpb->rpb_dsrdb_off); 1151 sysname = (const char *)((caddr_t)dsr + (dsr->dsr_sysname_off + 1152 sizeof(u_int64_t))); 1153 return (sysname); 1154 } 1155 1156 /* 1157 * Lookup the system specified system variation in the provided table, 1158 * returning the model string on match. 1159 */ 1160 const char * 1161 alpha_variation_name(variation, avtp) 1162 u_int64_t variation; 1163 const struct alpha_variation_table *avtp; 1164 { 1165 int i; 1166 1167 for (i = 0; avtp[i].avt_model != NULL; i++) 1168 if (avtp[i].avt_variation == variation) 1169 return (avtp[i].avt_model); 1170 return (NULL); 1171 } 1172 1173 /* 1174 * Generate a default platform name based for unknown system variations. 1175 */ 1176 const char * 1177 alpha_unknown_sysname() 1178 { 1179 static char s[128]; /* safe size */ 1180 1181 sprintf(s, "%s family, unknown model variation 0x%lx", 1182 platform.family, hwrpb->rpb_variation & SV_ST_MASK); 1183 return ((const char *)s); 1184 } 1185 1186 void 1187 identifycpu() 1188 { 1189 1190 /* 1191 * print out CPU identification information. 1192 */ 1193 printf("%s, %ldMHz\n", cpu_model, 1194 hwrpb->rpb_cc_freq / 1000000); /* XXX true for 21164? */ 1195 printf("%ld byte page size, %d processor%s.\n", 1196 hwrpb->rpb_page_size, ncpus, ncpus == 1 ? "" : "s"); 1197 #if 0 1198 /* this isn't defined for any systems that we run on? */ 1199 printf("serial number 0x%lx 0x%lx\n", 1200 ((long *)hwrpb->rpb_ssn)[0], ((long *)hwrpb->rpb_ssn)[1]); 1201 1202 /* and these aren't particularly useful! */ 1203 printf("variation: 0x%lx, revision 0x%lx\n", 1204 hwrpb->rpb_variation, *(long *)hwrpb->rpb_revision); 1205 #endif 1206 } 1207 1208 int waittime = -1; 1209 struct pcb dumppcb; 1210 1211 void 1212 cpu_reboot(howto, bootstr) 1213 int howto; 1214 char *bootstr; 1215 { 1216 extern int cold; 1217 #if defined(MULTIPROCESSOR) 1218 #if 0 /* XXX See below. */ 1219 u_long cpu_id; 1220 #endif 1221 #endif 1222 1223 #if defined(MULTIPROCESSOR) 1224 /* We must be running on the primary CPU. */ 1225 if (alpha_pal_whami() != hwrpb->rpb_primary_cpu_id) 1226 panic("cpu_reboot: not on primary CPU!"); 1227 #endif 1228 1229 /* If system is cold, just halt. */ 1230 if (cold) { 1231 howto |= RB_HALT; 1232 goto haltsys; 1233 } 1234 1235 /* If "always halt" was specified as a boot flag, obey. */ 1236 if ((boothowto & RB_HALT) != 0) 1237 howto |= RB_HALT; 1238 1239 boothowto = howto; 1240 if ((howto & RB_NOSYNC) == 0 && waittime < 0) { 1241 waittime = 0; 1242 vfs_shutdown(); 1243 /* 1244 * If we've been adjusting the clock, the todr 1245 * will be out of synch; adjust it now. 1246 */ 1247 resettodr(); 1248 } 1249 1250 /* Disable interrupts. */ 1251 splhigh(); 1252 1253 /* If rebooting and a dump is requested do it. */ 1254 #if 0 1255 if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP) 1256 #else 1257 if (howto & RB_DUMP) 1258 #endif 1259 dumpsys(); 1260 1261 haltsys: 1262 1263 /* run any shutdown hooks */ 1264 doshutdownhooks(); 1265 1266 #if defined(MULTIPROCESSOR) 1267 #if 0 /* XXX doesn't work when called from here?! */ 1268 /* Kill off any secondary CPUs. */ 1269 for (cpu_id = 0; cpu_id < hwrpb->rpb_pcs_cnt; cpu_id++) { 1270 if (cpu_id == hwrpb->rpb_primary_cpu_id || 1271 cpu_info[cpu_id].ci_softc == NULL) 1272 continue; 1273 cpu_halt_secondary(cpu_id); 1274 } 1275 #endif 1276 #endif 1277 1278 #ifdef BOOTKEY 1279 printf("hit any key to %s...\n", howto & RB_HALT ? "halt" : "reboot"); 1280 cnpollc(1); /* for proper keyboard command handling */ 1281 cngetc(); 1282 cnpollc(0); 1283 printf("\n"); 1284 #endif 1285 1286 /* Finally, powerdown/halt/reboot the system. */ 1287 if ((howto && RB_POWERDOWN) == RB_POWERDOWN && 1288 platform.powerdown != NULL) { 1289 (*platform.powerdown)(); 1290 printf("WARNING: powerdown failed!\n"); 1291 } 1292 printf("%s\n\n", howto & RB_HALT ? "halted." : "rebooting..."); 1293 prom_halt(howto & RB_HALT); 1294 /*NOTREACHED*/ 1295 } 1296 1297 /* 1298 * These variables are needed by /sbin/savecore 1299 */ 1300 u_long dumpmag = 0x8fca0101; /* magic number */ 1301 int dumpsize = 0; /* pages */ 1302 long dumplo = 0; /* blocks */ 1303 1304 /* 1305 * cpu_dumpsize: calculate size of machine-dependent kernel core dump headers. 1306 */ 1307 int 1308 cpu_dumpsize() 1309 { 1310 int size; 1311 1312 size = ALIGN(sizeof(kcore_seg_t)) + ALIGN(sizeof(cpu_kcore_hdr_t)) + 1313 ALIGN(mem_cluster_cnt * sizeof(phys_ram_seg_t)); 1314 if (roundup(size, dbtob(1)) != dbtob(1)) 1315 return -1; 1316 1317 return (1); 1318 } 1319 1320 /* 1321 * cpu_dump_mempagecnt: calculate size of RAM (in pages) to be dumped. 1322 */ 1323 u_long 1324 cpu_dump_mempagecnt() 1325 { 1326 u_long i, n; 1327 1328 n = 0; 1329 for (i = 0; i < mem_cluster_cnt; i++) 1330 n += atop(mem_clusters[i].size); 1331 return (n); 1332 } 1333 1334 /* 1335 * cpu_dump: dump machine-dependent kernel core dump headers. 1336 */ 1337 int 1338 cpu_dump() 1339 { 1340 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1341 char buf[dbtob(1)]; 1342 kcore_seg_t *segp; 1343 cpu_kcore_hdr_t *cpuhdrp; 1344 phys_ram_seg_t *memsegp; 1345 int i; 1346 1347 dump = bdevsw[major(dumpdev)].d_dump; 1348 1349 bzero(buf, sizeof buf); 1350 segp = (kcore_seg_t *)buf; 1351 cpuhdrp = (cpu_kcore_hdr_t *)&buf[ALIGN(sizeof(*segp))]; 1352 memsegp = (phys_ram_seg_t *)&buf[ ALIGN(sizeof(*segp)) + 1353 ALIGN(sizeof(*cpuhdrp))]; 1354 1355 /* 1356 * Generate a segment header. 1357 */ 1358 CORE_SETMAGIC(*segp, KCORE_MAGIC, MID_MACHINE, CORE_CPU); 1359 segp->c_size = dbtob(1) - ALIGN(sizeof(*segp)); 1360 1361 /* 1362 * Add the machine-dependent header info. 1363 */ 1364 cpuhdrp->lev1map_pa = ALPHA_K0SEG_TO_PHYS((vaddr_t)kernel_lev1map); 1365 cpuhdrp->page_size = PAGE_SIZE; 1366 cpuhdrp->nmemsegs = mem_cluster_cnt; 1367 1368 /* 1369 * Fill in the memory segment descriptors. 1370 */ 1371 for (i = 0; i < mem_cluster_cnt; i++) { 1372 memsegp[i].start = mem_clusters[i].start; 1373 memsegp[i].size = mem_clusters[i].size & ~PAGE_MASK; 1374 } 1375 1376 return (dump(dumpdev, dumplo, (caddr_t)buf, dbtob(1))); 1377 } 1378 1379 /* 1380 * This is called by main to set dumplo and dumpsize. 1381 * Dumps always skip the first CLBYTES of disk space 1382 * in case there might be a disk label stored there. 1383 * If there is extra space, put dump at the end to 1384 * reduce the chance that swapping trashes it. 1385 */ 1386 void 1387 cpu_dumpconf() 1388 { 1389 int nblks, dumpblks; /* size of dump area */ 1390 int maj; 1391 1392 if (dumpdev == NODEV) 1393 goto bad; 1394 maj = major(dumpdev); 1395 if (maj < 0 || maj >= nblkdev) 1396 panic("dumpconf: bad dumpdev=0x%x", dumpdev); 1397 if (bdevsw[maj].d_psize == NULL) 1398 goto bad; 1399 nblks = (*bdevsw[maj].d_psize)(dumpdev); 1400 if (nblks <= ctod(1)) 1401 goto bad; 1402 1403 dumpblks = cpu_dumpsize(); 1404 if (dumpblks < 0) 1405 goto bad; 1406 dumpblks += ctod(cpu_dump_mempagecnt()); 1407 1408 /* If dump won't fit (incl. room for possible label), punt. */ 1409 if (dumpblks > (nblks - ctod(1))) 1410 goto bad; 1411 1412 /* Put dump at end of partition */ 1413 dumplo = nblks - dumpblks; 1414 1415 /* dumpsize is in page units, and doesn't include headers. */ 1416 dumpsize = cpu_dump_mempagecnt(); 1417 return; 1418 1419 bad: 1420 dumpsize = 0; 1421 return; 1422 } 1423 1424 /* 1425 * Dump the kernel's image to the swap partition. 1426 */ 1427 #define BYTES_PER_DUMP NBPG 1428 1429 void 1430 dumpsys() 1431 { 1432 u_long totalbytesleft, bytes, i, n, memcl; 1433 u_long maddr; 1434 int psize; 1435 daddr_t blkno; 1436 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1437 int error; 1438 1439 /* Save registers. */ 1440 savectx(&dumppcb); 1441 1442 msgbufenabled = 0; /* don't record dump msgs in msgbuf */ 1443 if (dumpdev == NODEV) 1444 return; 1445 1446 /* 1447 * For dumps during autoconfiguration, 1448 * if dump device has already configured... 1449 */ 1450 if (dumpsize == 0) 1451 cpu_dumpconf(); 1452 if (dumplo <= 0) { 1453 printf("\ndump to dev %u,%u not possible\n", major(dumpdev), 1454 minor(dumpdev)); 1455 return; 1456 } 1457 printf("\ndumping to dev %u,%u offset %ld\n", major(dumpdev), 1458 minor(dumpdev), dumplo); 1459 1460 psize = (*bdevsw[major(dumpdev)].d_psize)(dumpdev); 1461 printf("dump "); 1462 if (psize == -1) { 1463 printf("area unavailable\n"); 1464 return; 1465 } 1466 1467 /* XXX should purge all outstanding keystrokes. */ 1468 1469 if ((error = cpu_dump()) != 0) 1470 goto err; 1471 1472 totalbytesleft = ptoa(cpu_dump_mempagecnt()); 1473 blkno = dumplo + cpu_dumpsize(); 1474 dump = bdevsw[major(dumpdev)].d_dump; 1475 error = 0; 1476 1477 for (memcl = 0; memcl < mem_cluster_cnt; memcl++) { 1478 maddr = mem_clusters[memcl].start; 1479 bytes = mem_clusters[memcl].size & ~PAGE_MASK; 1480 1481 for (i = 0; i < bytes; i += n, totalbytesleft -= n) { 1482 1483 /* Print out how many MBs we to go. */ 1484 if ((totalbytesleft % (1024*1024)) == 0) 1485 printf("%ld ", totalbytesleft / (1024 * 1024)); 1486 1487 /* Limit size for next transfer. */ 1488 n = bytes - i; 1489 if (n > BYTES_PER_DUMP) 1490 n = BYTES_PER_DUMP; 1491 1492 error = (*dump)(dumpdev, blkno, 1493 (caddr_t)ALPHA_PHYS_TO_K0SEG(maddr), n); 1494 if (error) 1495 goto err; 1496 maddr += n; 1497 blkno += btodb(n); /* XXX? */ 1498 1499 /* XXX should look for keystrokes, to cancel. */ 1500 } 1501 } 1502 1503 err: 1504 switch (error) { 1505 1506 case ENXIO: 1507 printf("device bad\n"); 1508 break; 1509 1510 case EFAULT: 1511 printf("device not ready\n"); 1512 break; 1513 1514 case EINVAL: 1515 printf("area improper\n"); 1516 break; 1517 1518 case EIO: 1519 printf("i/o error\n"); 1520 break; 1521 1522 case EINTR: 1523 printf("aborted from console\n"); 1524 break; 1525 1526 case 0: 1527 printf("succeeded\n"); 1528 break; 1529 1530 default: 1531 printf("error %d\n", error); 1532 break; 1533 } 1534 printf("\n\n"); 1535 delay(1000); 1536 } 1537 1538 void 1539 frametoreg(framep, regp) 1540 struct trapframe *framep; 1541 struct reg *regp; 1542 { 1543 1544 regp->r_regs[R_V0] = framep->tf_regs[FRAME_V0]; 1545 regp->r_regs[R_T0] = framep->tf_regs[FRAME_T0]; 1546 regp->r_regs[R_T1] = framep->tf_regs[FRAME_T1]; 1547 regp->r_regs[R_T2] = framep->tf_regs[FRAME_T2]; 1548 regp->r_regs[R_T3] = framep->tf_regs[FRAME_T3]; 1549 regp->r_regs[R_T4] = framep->tf_regs[FRAME_T4]; 1550 regp->r_regs[R_T5] = framep->tf_regs[FRAME_T5]; 1551 regp->r_regs[R_T6] = framep->tf_regs[FRAME_T6]; 1552 regp->r_regs[R_T7] = framep->tf_regs[FRAME_T7]; 1553 regp->r_regs[R_S0] = framep->tf_regs[FRAME_S0]; 1554 regp->r_regs[R_S1] = framep->tf_regs[FRAME_S1]; 1555 regp->r_regs[R_S2] = framep->tf_regs[FRAME_S2]; 1556 regp->r_regs[R_S3] = framep->tf_regs[FRAME_S3]; 1557 regp->r_regs[R_S4] = framep->tf_regs[FRAME_S4]; 1558 regp->r_regs[R_S5] = framep->tf_regs[FRAME_S5]; 1559 regp->r_regs[R_S6] = framep->tf_regs[FRAME_S6]; 1560 regp->r_regs[R_A0] = framep->tf_regs[FRAME_A0]; 1561 regp->r_regs[R_A1] = framep->tf_regs[FRAME_A1]; 1562 regp->r_regs[R_A2] = framep->tf_regs[FRAME_A2]; 1563 regp->r_regs[R_A3] = framep->tf_regs[FRAME_A3]; 1564 regp->r_regs[R_A4] = framep->tf_regs[FRAME_A4]; 1565 regp->r_regs[R_A5] = framep->tf_regs[FRAME_A5]; 1566 regp->r_regs[R_T8] = framep->tf_regs[FRAME_T8]; 1567 regp->r_regs[R_T9] = framep->tf_regs[FRAME_T9]; 1568 regp->r_regs[R_T10] = framep->tf_regs[FRAME_T10]; 1569 regp->r_regs[R_T11] = framep->tf_regs[FRAME_T11]; 1570 regp->r_regs[R_RA] = framep->tf_regs[FRAME_RA]; 1571 regp->r_regs[R_T12] = framep->tf_regs[FRAME_T12]; 1572 regp->r_regs[R_AT] = framep->tf_regs[FRAME_AT]; 1573 regp->r_regs[R_GP] = framep->tf_regs[FRAME_GP]; 1574 /* regp->r_regs[R_SP] = framep->tf_regs[FRAME_SP]; XXX */ 1575 regp->r_regs[R_ZERO] = 0; 1576 } 1577 1578 void 1579 regtoframe(regp, framep) 1580 struct reg *regp; 1581 struct trapframe *framep; 1582 { 1583 1584 framep->tf_regs[FRAME_V0] = regp->r_regs[R_V0]; 1585 framep->tf_regs[FRAME_T0] = regp->r_regs[R_T0]; 1586 framep->tf_regs[FRAME_T1] = regp->r_regs[R_T1]; 1587 framep->tf_regs[FRAME_T2] = regp->r_regs[R_T2]; 1588 framep->tf_regs[FRAME_T3] = regp->r_regs[R_T3]; 1589 framep->tf_regs[FRAME_T4] = regp->r_regs[R_T4]; 1590 framep->tf_regs[FRAME_T5] = regp->r_regs[R_T5]; 1591 framep->tf_regs[FRAME_T6] = regp->r_regs[R_T6]; 1592 framep->tf_regs[FRAME_T7] = regp->r_regs[R_T7]; 1593 framep->tf_regs[FRAME_S0] = regp->r_regs[R_S0]; 1594 framep->tf_regs[FRAME_S1] = regp->r_regs[R_S1]; 1595 framep->tf_regs[FRAME_S2] = regp->r_regs[R_S2]; 1596 framep->tf_regs[FRAME_S3] = regp->r_regs[R_S3]; 1597 framep->tf_regs[FRAME_S4] = regp->r_regs[R_S4]; 1598 framep->tf_regs[FRAME_S5] = regp->r_regs[R_S5]; 1599 framep->tf_regs[FRAME_S6] = regp->r_regs[R_S6]; 1600 framep->tf_regs[FRAME_A0] = regp->r_regs[R_A0]; 1601 framep->tf_regs[FRAME_A1] = regp->r_regs[R_A1]; 1602 framep->tf_regs[FRAME_A2] = regp->r_regs[R_A2]; 1603 framep->tf_regs[FRAME_A3] = regp->r_regs[R_A3]; 1604 framep->tf_regs[FRAME_A4] = regp->r_regs[R_A4]; 1605 framep->tf_regs[FRAME_A5] = regp->r_regs[R_A5]; 1606 framep->tf_regs[FRAME_T8] = regp->r_regs[R_T8]; 1607 framep->tf_regs[FRAME_T9] = regp->r_regs[R_T9]; 1608 framep->tf_regs[FRAME_T10] = regp->r_regs[R_T10]; 1609 framep->tf_regs[FRAME_T11] = regp->r_regs[R_T11]; 1610 framep->tf_regs[FRAME_RA] = regp->r_regs[R_RA]; 1611 framep->tf_regs[FRAME_T12] = regp->r_regs[R_T12]; 1612 framep->tf_regs[FRAME_AT] = regp->r_regs[R_AT]; 1613 framep->tf_regs[FRAME_GP] = regp->r_regs[R_GP]; 1614 /* framep->tf_regs[FRAME_SP] = regp->r_regs[R_SP]; XXX */ 1615 /* ??? = regp->r_regs[R_ZERO]; */ 1616 } 1617 1618 void 1619 printregs(regp) 1620 struct reg *regp; 1621 { 1622 int i; 1623 1624 for (i = 0; i < 32; i++) 1625 printf("R%d:\t0x%016lx%s", i, regp->r_regs[i], 1626 i & 1 ? "\n" : "\t"); 1627 } 1628 1629 void 1630 regdump(framep) 1631 struct trapframe *framep; 1632 { 1633 struct reg reg; 1634 1635 frametoreg(framep, ®); 1636 reg.r_regs[R_SP] = alpha_pal_rdusp(); 1637 1638 printf("REGISTERS:\n"); 1639 printregs(®); 1640 } 1641 1642 #ifdef DEBUG 1643 int sigdebug = 0; 1644 int sigpid = 0; 1645 #define SDB_FOLLOW 0x01 1646 #define SDB_KSTACK 0x02 1647 #endif 1648 1649 /* 1650 * Send an interrupt to process. 1651 */ 1652 void 1653 sendsig(catcher, sig, mask, code) 1654 sig_t catcher; 1655 int sig; 1656 sigset_t *mask; 1657 u_long code; 1658 { 1659 struct proc *p = curproc; 1660 struct sigcontext *scp, ksc; 1661 struct trapframe *frame; 1662 struct sigacts *psp = p->p_sigacts; 1663 int onstack, fsize, rndfsize; 1664 1665 frame = p->p_md.md_tf; 1666 1667 /* Do we need to jump onto the signal stack? */ 1668 onstack = 1669 (psp->ps_sigstk.ss_flags & (SS_DISABLE | SS_ONSTACK)) == 0 && 1670 (psp->ps_sigact[sig].sa_flags & SA_ONSTACK) != 0; 1671 1672 /* Allocate space for the signal handler context. */ 1673 fsize = sizeof(ksc); 1674 rndfsize = ((fsize + 15) / 16) * 16; 1675 1676 if (onstack) 1677 scp = (struct sigcontext *)((caddr_t)psp->ps_sigstk.ss_sp + 1678 psp->ps_sigstk.ss_size); 1679 else 1680 scp = (struct sigcontext *)(alpha_pal_rdusp()); 1681 scp = (struct sigcontext *)((caddr_t)scp - rndfsize); 1682 1683 #ifdef DEBUG 1684 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1685 printf("sendsig(%d): sig %d ssp %p usp %p\n", p->p_pid, 1686 sig, &onstack, scp); 1687 #endif 1688 1689 /* Build stack frame for signal trampoline. */ 1690 ksc.sc_pc = frame->tf_regs[FRAME_PC]; 1691 ksc.sc_ps = frame->tf_regs[FRAME_PS]; 1692 1693 /* Save register context. */ 1694 frametoreg(frame, (struct reg *)ksc.sc_regs); 1695 ksc.sc_regs[R_ZERO] = 0xACEDBADE; /* magic number */ 1696 ksc.sc_regs[R_SP] = alpha_pal_rdusp(); 1697 1698 /* save the floating-point state, if necessary, then copy it. */ 1699 if (p == fpcurproc) { 1700 alpha_pal_wrfen(1); 1701 savefpstate(&p->p_addr->u_pcb.pcb_fp); 1702 alpha_pal_wrfen(0); 1703 fpcurproc = NULL; 1704 } 1705 ksc.sc_ownedfp = p->p_md.md_flags & MDP_FPUSED; 1706 bcopy(&p->p_addr->u_pcb.pcb_fp, (struct fpreg *)ksc.sc_fpregs, 1707 sizeof(struct fpreg)); 1708 ksc.sc_fp_control = 0; /* XXX ? */ 1709 bzero(ksc.sc_reserved, sizeof ksc.sc_reserved); /* XXX */ 1710 bzero(ksc.sc_xxx, sizeof ksc.sc_xxx); /* XXX */ 1711 1712 /* Save signal stack. */ 1713 ksc.sc_onstack = psp->ps_sigstk.ss_flags & SS_ONSTACK; 1714 1715 /* Save signal mask. */ 1716 ksc.sc_mask = *mask; 1717 1718 #ifdef COMPAT_13 1719 /* 1720 * XXX We always have to save an old style signal mask because 1721 * XXX we might be delivering a signal to a process which will 1722 * XXX escape from the signal in a non-standard way and invoke 1723 * XXX sigreturn() directly. 1724 */ 1725 { 1726 /* Note: it's a long in the stack frame. */ 1727 sigset13_t mask13; 1728 1729 native_sigset_to_sigset13(mask, &mask13); 1730 ksc.__sc_mask13 = mask13; 1731 } 1732 #endif 1733 1734 #ifdef COMPAT_OSF1 1735 /* 1736 * XXX Create an OSF/1-style sigcontext and associated goo. 1737 */ 1738 #endif 1739 1740 if (copyout(&ksc, (caddr_t)scp, fsize) != 0) { 1741 /* 1742 * Process has trashed its stack; give it an illegal 1743 * instruction to halt it in its tracks. 1744 */ 1745 #ifdef DEBUG 1746 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1747 printf("sendsig(%d): copyout failed on sig %d\n", 1748 p->p_pid, sig); 1749 #endif 1750 sigexit(p, SIGILL); 1751 /* NOTREACHED */ 1752 } 1753 #ifdef DEBUG 1754 if (sigdebug & SDB_FOLLOW) 1755 printf("sendsig(%d): sig %d scp %p code %lx\n", p->p_pid, sig, 1756 scp, code); 1757 #endif 1758 1759 /* Set up the registers to return to sigcode. */ 1760 frame->tf_regs[FRAME_PC] = (u_int64_t)psp->ps_sigcode; 1761 frame->tf_regs[FRAME_A0] = sig; 1762 frame->tf_regs[FRAME_A1] = code; 1763 frame->tf_regs[FRAME_A2] = (u_int64_t)scp; 1764 frame->tf_regs[FRAME_T12] = (u_int64_t)catcher; /* t12 is pv */ 1765 alpha_pal_wrusp((unsigned long)scp); 1766 1767 /* Remember that we're now on the signal stack. */ 1768 if (onstack) 1769 psp->ps_sigstk.ss_flags |= SS_ONSTACK; 1770 1771 #ifdef DEBUG 1772 if (sigdebug & SDB_FOLLOW) 1773 printf("sendsig(%d): pc %lx, catcher %lx\n", p->p_pid, 1774 frame->tf_regs[FRAME_PC], frame->tf_regs[FRAME_A3]); 1775 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1776 printf("sendsig(%d): sig %d returns\n", 1777 p->p_pid, sig); 1778 #endif 1779 } 1780 1781 /* 1782 * System call to cleanup state after a signal 1783 * has been taken. Reset signal mask and 1784 * stack state from context left by sendsig (above). 1785 * Return to previous pc and psl as specified by 1786 * context left by sendsig. Check carefully to 1787 * make sure that the user has not modified the 1788 * psl to gain improper priviledges or to cause 1789 * a machine fault. 1790 */ 1791 /* ARGSUSED */ 1792 int 1793 sys___sigreturn14(p, v, retval) 1794 struct proc *p; 1795 void *v; 1796 register_t *retval; 1797 { 1798 struct sys___sigreturn14_args /* { 1799 syscallarg(struct sigcontext *) sigcntxp; 1800 } */ *uap = v; 1801 struct sigcontext *scp, ksc; 1802 1803 /* 1804 * The trampoline code hands us the context. 1805 * It is unsafe to keep track of it ourselves, in the event that a 1806 * program jumps out of a signal handler. 1807 */ 1808 scp = SCARG(uap, sigcntxp); 1809 #ifdef DEBUG 1810 if (sigdebug & SDB_FOLLOW) 1811 printf("sigreturn: pid %d, scp %p\n", p->p_pid, scp); 1812 #endif 1813 if (ALIGN(scp) != (u_int64_t)scp) 1814 return (EINVAL); 1815 1816 if (copyin((caddr_t)scp, &ksc, sizeof(ksc)) != 0) 1817 return (EFAULT); 1818 1819 if (ksc.sc_regs[R_ZERO] != 0xACEDBADE) /* magic number */ 1820 return (EINVAL); 1821 1822 /* Restore register context. */ 1823 p->p_md.md_tf->tf_regs[FRAME_PC] = ksc.sc_pc; 1824 p->p_md.md_tf->tf_regs[FRAME_PS] = 1825 (ksc.sc_ps | ALPHA_PSL_USERSET) & ~ALPHA_PSL_USERCLR; 1826 1827 regtoframe((struct reg *)ksc.sc_regs, p->p_md.md_tf); 1828 alpha_pal_wrusp(ksc.sc_regs[R_SP]); 1829 1830 /* XXX ksc.sc_ownedfp ? */ 1831 if (p == fpcurproc) 1832 fpcurproc = NULL; 1833 bcopy((struct fpreg *)ksc.sc_fpregs, &p->p_addr->u_pcb.pcb_fp, 1834 sizeof(struct fpreg)); 1835 /* XXX ksc.sc_fp_control ? */ 1836 1837 /* Restore signal stack. */ 1838 if (ksc.sc_onstack & SS_ONSTACK) 1839 p->p_sigacts->ps_sigstk.ss_flags |= SS_ONSTACK; 1840 else 1841 p->p_sigacts->ps_sigstk.ss_flags &= ~SS_ONSTACK; 1842 1843 /* Restore signal mask. */ 1844 (void) sigprocmask1(p, SIG_SETMASK, &ksc.sc_mask, 0); 1845 1846 #ifdef DEBUG 1847 if (sigdebug & SDB_FOLLOW) 1848 printf("sigreturn(%d): returns\n", p->p_pid); 1849 #endif 1850 return (EJUSTRETURN); 1851 } 1852 1853 /* 1854 * machine dependent system variables. 1855 */ 1856 int 1857 cpu_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 1858 int *name; 1859 u_int namelen; 1860 void *oldp; 1861 size_t *oldlenp; 1862 void *newp; 1863 size_t newlen; 1864 struct proc *p; 1865 { 1866 dev_t consdev; 1867 1868 /* all sysctl names at this level are terminal */ 1869 if (namelen != 1) 1870 return (ENOTDIR); /* overloaded */ 1871 1872 switch (name[0]) { 1873 case CPU_CONSDEV: 1874 if (cn_tab != NULL) 1875 consdev = cn_tab->cn_dev; 1876 else 1877 consdev = NODEV; 1878 return (sysctl_rdstruct(oldp, oldlenp, newp, &consdev, 1879 sizeof consdev)); 1880 1881 case CPU_ROOT_DEVICE: 1882 return (sysctl_rdstring(oldp, oldlenp, newp, 1883 root_device->dv_xname)); 1884 1885 case CPU_UNALIGNED_PRINT: 1886 return (sysctl_int(oldp, oldlenp, newp, newlen, 1887 &alpha_unaligned_print)); 1888 1889 case CPU_UNALIGNED_FIX: 1890 return (sysctl_int(oldp, oldlenp, newp, newlen, 1891 &alpha_unaligned_fix)); 1892 1893 case CPU_UNALIGNED_SIGBUS: 1894 return (sysctl_int(oldp, oldlenp, newp, newlen, 1895 &alpha_unaligned_sigbus)); 1896 1897 case CPU_BOOTED_KERNEL: 1898 return (sysctl_rdstring(oldp, oldlenp, newp, 1899 bootinfo.booted_kernel)); 1900 1901 default: 1902 return (EOPNOTSUPP); 1903 } 1904 /* NOTREACHED */ 1905 } 1906 1907 /* 1908 * Set registers on exec. 1909 */ 1910 void 1911 setregs(p, pack, stack) 1912 register struct proc *p; 1913 struct exec_package *pack; 1914 u_long stack; 1915 { 1916 struct trapframe *tfp = p->p_md.md_tf; 1917 #ifdef DEBUG 1918 int i; 1919 #endif 1920 1921 #ifdef DEBUG 1922 /* 1923 * Crash and dump, if the user requested it. 1924 */ 1925 if (boothowto & RB_DUMP) 1926 panic("crash requested by boot flags"); 1927 #endif 1928 1929 #ifdef DEBUG 1930 for (i = 0; i < FRAME_SIZE; i++) 1931 tfp->tf_regs[i] = 0xbabefacedeadbeef; 1932 #else 1933 bzero(tfp->tf_regs, FRAME_SIZE * sizeof tfp->tf_regs[0]); 1934 #endif 1935 bzero(&p->p_addr->u_pcb.pcb_fp, sizeof p->p_addr->u_pcb.pcb_fp); 1936 #define FP_RN 2 /* XXX */ 1937 p->p_addr->u_pcb.pcb_fp.fpr_cr = (long)FP_RN << 58; 1938 alpha_pal_wrusp(stack); 1939 tfp->tf_regs[FRAME_PS] = ALPHA_PSL_USERSET; 1940 tfp->tf_regs[FRAME_PC] = pack->ep_entry & ~3; 1941 1942 tfp->tf_regs[FRAME_A0] = stack; /* a0 = sp */ 1943 tfp->tf_regs[FRAME_A1] = 0; /* a1 = rtld cleanup */ 1944 tfp->tf_regs[FRAME_A2] = 0; /* a2 = rtld object */ 1945 tfp->tf_regs[FRAME_A3] = (u_int64_t)PS_STRINGS; /* a3 = ps_strings */ 1946 tfp->tf_regs[FRAME_T12] = tfp->tf_regs[FRAME_PC]; /* a.k.a. PV */ 1947 1948 p->p_md.md_flags &= ~MDP_FPUSED; 1949 if (fpcurproc == p) 1950 fpcurproc = NULL; 1951 } 1952 1953 void 1954 netintr() 1955 { 1956 int n, s; 1957 1958 s = splhigh(); 1959 n = netisr; 1960 netisr = 0; 1961 splx(s); 1962 1963 #define DONETISR(bit, fn) \ 1964 do { \ 1965 if (n & (1 << (bit))) \ 1966 fn; \ 1967 } while (0) 1968 1969 #ifdef INET 1970 #if NARP > 0 1971 DONETISR(NETISR_ARP, arpintr()); 1972 #endif 1973 DONETISR(NETISR_IP, ipintr()); 1974 #endif 1975 #ifdef NETATALK 1976 DONETISR(NETISR_ATALK, atintr()); 1977 #endif 1978 #ifdef NS 1979 DONETISR(NETISR_NS, nsintr()); 1980 #endif 1981 #ifdef ISO 1982 DONETISR(NETISR_ISO, clnlintr()); 1983 #endif 1984 #ifdef CCITT 1985 DONETISR(NETISR_CCITT, ccittintr()); 1986 #endif 1987 #ifdef NATM 1988 DONETISR(NETISR_NATM, natmintr()); 1989 #endif 1990 #if NPPP > 1 1991 DONETISR(NETISR_PPP, pppintr()); 1992 #endif 1993 1994 #undef DONETISR 1995 } 1996 1997 void 1998 do_sir() 1999 { 2000 u_int64_t n; 2001 2002 do { 2003 (void)splhigh(); 2004 n = ssir; 2005 ssir = 0; 2006 splsoft(); /* don't recurse through spl0() */ 2007 2008 #define COUNT_SOFT uvmexp.softs++ 2009 2010 #define DO_SIR(bit, fn) \ 2011 do { \ 2012 if (n & (bit)) { \ 2013 COUNT_SOFT; \ 2014 fn; \ 2015 } \ 2016 } while (0) 2017 2018 DO_SIR(SIR_NET, netintr()); 2019 DO_SIR(SIR_CLOCK, softclock()); 2020 #if NCOM > 0 2021 DO_SIR(SIR_SERIAL, comsoft()); 2022 #endif 2023 2024 #undef COUNT_SOFT 2025 #undef DO_SIR 2026 } while (ssir != 0); 2027 } 2028 2029 int 2030 spl0() 2031 { 2032 2033 if (ssir) 2034 do_sir(); /* it lowers the IPL itself */ 2035 2036 return (alpha_pal_swpipl(ALPHA_PSL_IPL_0)); 2037 } 2038 2039 /* 2040 * The following primitives manipulate the run queues. _whichqs tells which 2041 * of the 32 queues _qs have processes in them. Setrunqueue puts processes 2042 * into queues, Remrunqueue removes them from queues. The running process is 2043 * on no queue, other processes are on a queue related to p->p_priority, 2044 * divided by 4 actually to shrink the 0-127 range of priorities into the 32 2045 * available queues. 2046 */ 2047 /* 2048 * setrunqueue(p) 2049 * proc *p; 2050 * 2051 * Call should be made at splclock(), and p->p_stat should be SRUN. 2052 */ 2053 2054 void 2055 setrunqueue(p) 2056 struct proc *p; 2057 { 2058 int bit; 2059 2060 /* firewall: p->p_back must be NULL */ 2061 if (p->p_back != NULL) 2062 panic("setrunqueue"); 2063 2064 bit = p->p_priority >> 2; 2065 whichqs |= (1 << bit); 2066 p->p_forw = (struct proc *)&qs[bit]; 2067 p->p_back = qs[bit].ph_rlink; 2068 p->p_back->p_forw = p; 2069 qs[bit].ph_rlink = p; 2070 } 2071 2072 /* 2073 * remrunqueue(p) 2074 * 2075 * Call should be made at splclock(). 2076 */ 2077 void 2078 remrunqueue(p) 2079 struct proc *p; 2080 { 2081 int bit; 2082 2083 bit = p->p_priority >> 2; 2084 if ((whichqs & (1 << bit)) == 0) 2085 panic("remrunqueue"); 2086 2087 p->p_back->p_forw = p->p_forw; 2088 p->p_forw->p_back = p->p_back; 2089 p->p_back = NULL; /* for firewall checking. */ 2090 2091 if ((struct proc *)&qs[bit] == qs[bit].ph_link) 2092 whichqs &= ~(1 << bit); 2093 } 2094 2095 /* 2096 * Return the best possible estimate of the time in the timeval 2097 * to which tvp points. Unfortunately, we can't read the hardware registers. 2098 * We guarantee that the time will be greater than the value obtained by a 2099 * previous call. 2100 */ 2101 void 2102 microtime(tvp) 2103 register struct timeval *tvp; 2104 { 2105 int s = splclock(); 2106 static struct timeval lasttime; 2107 2108 *tvp = time; 2109 #ifdef notdef 2110 tvp->tv_usec += clkread(); 2111 while (tvp->tv_usec > 1000000) { 2112 tvp->tv_sec++; 2113 tvp->tv_usec -= 1000000; 2114 } 2115 #endif 2116 if (tvp->tv_sec == lasttime.tv_sec && 2117 tvp->tv_usec <= lasttime.tv_usec && 2118 (tvp->tv_usec = lasttime.tv_usec + 1) > 1000000) { 2119 tvp->tv_sec++; 2120 tvp->tv_usec -= 1000000; 2121 } 2122 lasttime = *tvp; 2123 splx(s); 2124 } 2125 2126 /* 2127 * Wait "n" microseconds. 2128 */ 2129 void 2130 delay(n) 2131 unsigned long n; 2132 { 2133 long N = cycles_per_usec * (n); 2134 2135 while (N > 0) /* XXX */ 2136 N -= 3; /* XXX */ 2137 } 2138 2139 #if defined(COMPAT_OSF1) || 1 /* XXX */ 2140 void cpu_exec_ecoff_setregs __P((struct proc *, struct exec_package *, 2141 u_long)); 2142 2143 void 2144 cpu_exec_ecoff_setregs(p, epp, stack) 2145 struct proc *p; 2146 struct exec_package *epp; 2147 u_long stack; 2148 { 2149 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2150 2151 setregs(p, epp, stack); 2152 p->p_md.md_tf->tf_regs[FRAME_GP] = execp->a.gp_value; 2153 } 2154 2155 /* 2156 * cpu_exec_ecoff_hook(): 2157 * cpu-dependent ECOFF format hook for execve(). 2158 * 2159 * Do any machine-dependent diddling of the exec package when doing ECOFF. 2160 * 2161 */ 2162 int 2163 cpu_exec_ecoff_hook(p, epp) 2164 struct proc *p; 2165 struct exec_package *epp; 2166 { 2167 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2168 extern struct emul emul_netbsd; 2169 #ifdef COMPAT_OSF1 2170 extern struct emul emul_osf1; 2171 #endif 2172 2173 switch (execp->f.f_magic) { 2174 #ifdef COMPAT_OSF1 2175 case ECOFF_MAGIC_ALPHA: 2176 epp->ep_emul = &emul_osf1; 2177 break; 2178 #endif 2179 2180 case ECOFF_MAGIC_NETBSD_ALPHA: 2181 epp->ep_emul = &emul_netbsd; 2182 break; 2183 2184 default: 2185 return ENOEXEC; 2186 } 2187 return 0; 2188 } 2189 #endif 2190 2191 int 2192 alpha_pa_access(pa) 2193 u_long pa; 2194 { 2195 int i; 2196 2197 for (i = 0; i < mem_cluster_cnt; i++) { 2198 if (pa < mem_clusters[i].start) 2199 continue; 2200 if ((pa - mem_clusters[i].start) >= 2201 (mem_clusters[i].size & ~PAGE_MASK)) 2202 continue; 2203 return (mem_clusters[i].size & PAGE_MASK); /* prot */ 2204 } 2205 return (PROT_NONE); 2206 } 2207 2208 /* XXX XXX BEGIN XXX XXX */ 2209 paddr_t alpha_XXX_dmamap_or; /* XXX */ 2210 /* XXX */ 2211 paddr_t /* XXX */ 2212 alpha_XXX_dmamap(v) /* XXX */ 2213 vaddr_t v; /* XXX */ 2214 { /* XXX */ 2215 /* XXX */ 2216 return (vtophys(v) | alpha_XXX_dmamap_or); /* XXX */ 2217 } /* XXX */ 2218 /* XXX XXX END XXX XXX */ 2219 2220 struct mchkinfo * 2221 cpu_mchkinfo() 2222 { 2223 if (mchkinfo_all_cpus == NULL) 2224 return &startup_info; 2225 return mchkinfo_all_cpus + alpha_pal_whami(); 2226 } 2227
Indexes created Fri Oct 03 15:10:06 GMT 2025