machdep.c revision 1.164
1 /* $NetBSD: machdep.c,v 1.164 1999/03/26 00:15:04 thorpej 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 1.164 1999/03/26 00:15:04 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 >= ncpuinit) { 429 platform_not_supported(); 430 /* NOTREACHED */ 431 } 432 (*cpuinit[cputype].init)(); 433 strcpy(cpu_model, platform.model); 434 435 /* 436 * Initalize the real console, so the the bootstrap console is 437 * no longer necessary. 438 */ 439 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 440 if (!pmap_uses_prom_console()) 441 #endif 442 (*platform.cons_init)(); 443 444 #ifdef DIAGNOSTIC 445 /* Paranoid sanity checking */ 446 447 /* We should always be running on the the primary. */ 448 assert(hwrpb->rpb_primary_cpu_id == alpha_pal_whami()); 449 450 /* 451 * On single-CPU systypes, the primary should always be CPU 0, 452 * except on Alpha 8200 systems where the CPU id is related 453 * to the VID, which is related to the Turbo Laser node id. 454 */ 455 if (cputype != ST_DEC_21000) 456 assert(hwrpb->rpb_primary_cpu_id == 0); 457 #endif 458 459 /* NO MORE FIRMWARE ACCESS ALLOWED */ 460 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 461 /* 462 * XXX (unless _PMAP_MAY_USE_PROM_CONSOLE is defined and 463 * XXX pmap_uses_prom_console() evaluates to non-zero.) 464 */ 465 #endif 466 467 /* 468 * find out this system's page size 469 */ 470 PAGE_SIZE = hwrpb->rpb_page_size; 471 if (PAGE_SIZE != 8192) 472 panic("page size %d != 8192?!", PAGE_SIZE); 473 474 /* 475 * Initialize PAGE_SIZE-dependent variables. 476 */ 477 uvm_setpagesize(); 478 479 /* 480 * Find the beginning and end of the kernel (and leave a 481 * bit of space before the beginning for the bootstrap 482 * stack). 483 */ 484 kernstart = trunc_page(kernel_text) - 2 * PAGE_SIZE; 485 #ifdef DDB 486 ksym_start = (void *)bootinfo.ssym; 487 ksym_end = (void *)bootinfo.esym; 488 kernend = (vaddr_t)round_page(ksym_end); 489 #else 490 kernend = (vaddr_t)round_page(_end); 491 #endif 492 493 kernstartpfn = atop(ALPHA_K0SEG_TO_PHYS(kernstart)); 494 kernendpfn = atop(ALPHA_K0SEG_TO_PHYS(kernend)); 495 496 /* 497 * Find out how much memory is available, by looking at 498 * the memory cluster descriptors. This also tries to do 499 * its best to detect things things that have never been seen 500 * before... 501 */ 502 mddtp = (struct mddt *)(((caddr_t)hwrpb) + hwrpb->rpb_memdat_off); 503 504 /* MDDT SANITY CHECKING */ 505 mddtweird = 0; 506 if (mddtp->mddt_cluster_cnt < 2) { 507 mddtweird = 1; 508 printf("WARNING: weird number of mem clusters: %lu\n", 509 mddtp->mddt_cluster_cnt); 510 } 511 512 #if 0 513 printf("Memory cluster count: %d\n", mddtp->mddt_cluster_cnt); 514 #endif 515 516 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 517 memc = &mddtp->mddt_clusters[i]; 518 #if 0 519 printf("MEMC %d: pfn 0x%lx cnt 0x%lx usage 0x%lx\n", i, 520 memc->mddt_pfn, memc->mddt_pg_cnt, memc->mddt_usage); 521 #endif 522 totalphysmem += memc->mddt_pg_cnt; 523 if (mem_cluster_cnt < VM_PHYSSEG_MAX) { /* XXX */ 524 mem_clusters[mem_cluster_cnt].start = 525 ptoa(memc->mddt_pfn); 526 mem_clusters[mem_cluster_cnt].size = 527 ptoa(memc->mddt_pg_cnt); 528 if (memc->mddt_usage & MDDT_mbz || 529 memc->mddt_usage & MDDT_NONVOLATILE || /* XXX */ 530 memc->mddt_usage & MDDT_PALCODE) 531 mem_clusters[mem_cluster_cnt].size |= 532 PROT_READ; 533 else 534 mem_clusters[mem_cluster_cnt].size |= 535 PROT_READ | PROT_WRITE | PROT_EXEC; 536 mem_cluster_cnt++; 537 } 538 539 if (memc->mddt_usage & MDDT_mbz) { 540 mddtweird = 1; 541 printf("WARNING: mem cluster %d has weird " 542 "usage 0x%lx\n", i, memc->mddt_usage); 543 unknownmem += memc->mddt_pg_cnt; 544 continue; 545 } 546 if (memc->mddt_usage & MDDT_NONVOLATILE) { 547 /* XXX should handle these... */ 548 printf("WARNING: skipping non-volatile mem " 549 "cluster %d\n", i); 550 unusedmem += memc->mddt_pg_cnt; 551 continue; 552 } 553 if (memc->mddt_usage & MDDT_PALCODE) { 554 resvmem += memc->mddt_pg_cnt; 555 continue; 556 } 557 558 /* 559 * We have a memory cluster available for system 560 * software use. We must determine if this cluster 561 * holds the kernel. 562 */ 563 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 564 /* 565 * XXX If the kernel uses the PROM console, we only use the 566 * XXX memory after the kernel in the first system segment, 567 * XXX to avoid clobbering prom mapping, data, etc. 568 */ 569 if (!pmap_uses_prom_console() || physmem == 0) { 570 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 571 physmem += memc->mddt_pg_cnt; 572 pfn0 = memc->mddt_pfn; 573 pfn1 = memc->mddt_pfn + memc->mddt_pg_cnt; 574 if (pfn0 <= kernstartpfn && kernendpfn <= pfn1) { 575 /* 576 * Must compute the location of the kernel 577 * within the segment. 578 */ 579 #if 0 580 printf("Cluster %d contains kernel\n", i); 581 #endif 582 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 583 if (!pmap_uses_prom_console()) { 584 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 585 if (pfn0 < kernstartpfn) { 586 /* 587 * There is a chunk before the kernel. 588 */ 589 #if 0 590 printf("Loading chunk before kernel: " 591 "0x%lx / 0x%lx\n", pfn0, kernstartpfn); 592 #endif 593 uvm_page_physload(pfn0, kernstartpfn, 594 pfn0, kernstartpfn, VM_FREELIST_DEFAULT); 595 } 596 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 597 } 598 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 599 if (kernendpfn < pfn1) { 600 /* 601 * There is a chunk after the kernel. 602 */ 603 #if 0 604 printf("Loading chunk after kernel: " 605 "0x%lx / 0x%lx\n", kernendpfn, pfn1); 606 #endif 607 uvm_page_physload(kernendpfn, pfn1, 608 kernendpfn, pfn1, VM_FREELIST_DEFAULT); 609 } 610 } else { 611 /* 612 * Just load this cluster as one chunk. 613 */ 614 #if 0 615 printf("Loading cluster %d: 0x%lx / 0x%lx\n", i, 616 pfn0, pfn1); 617 #endif 618 uvm_page_physload(pfn0, pfn1, pfn0, pfn1, 619 VM_FREELIST_DEFAULT); 620 } 621 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 622 } 623 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 624 } 625 626 /* 627 * Dump out the MDDT if it looks odd... 628 */ 629 if (mddtweird) { 630 printf("\n"); 631 printf("complete memory cluster information:\n"); 632 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 633 printf("mddt %d:\n", i); 634 printf("\tpfn %lx\n", 635 mddtp->mddt_clusters[i].mddt_pfn); 636 printf("\tcnt %lx\n", 637 mddtp->mddt_clusters[i].mddt_pg_cnt); 638 printf("\ttest %lx\n", 639 mddtp->mddt_clusters[i].mddt_pg_test); 640 printf("\tbva %lx\n", 641 mddtp->mddt_clusters[i].mddt_v_bitaddr); 642 printf("\tbpa %lx\n", 643 mddtp->mddt_clusters[i].mddt_p_bitaddr); 644 printf("\tbcksum %lx\n", 645 mddtp->mddt_clusters[i].mddt_bit_cksum); 646 printf("\tusage %lx\n", 647 mddtp->mddt_clusters[i].mddt_usage); 648 } 649 printf("\n"); 650 } 651 652 if (totalphysmem == 0) 653 panic("can't happen: system seems to have no memory!"); 654 655 #ifdef LIMITMEM 656 /* 657 * XXX Kludge so we can run on machines with memory larger 658 * XXX than 1G until all device drivers are converted to 659 * XXX use bus_dma. (Relies on the fact that vm_physmem 660 * XXX sorted in order of increasing addresses.) 661 */ 662 if (vm_physmem[vm_nphysseg - 1].end > atop(LIMITMEM * 1024 * 1024)) { 663 664 printf("******** LIMITING MEMORY TO %dMB **********\n", 665 LIMITMEM); 666 667 do { 668 u_long ovf; 669 670 vps = &vm_physmem[vm_nphysseg - 1]; 671 672 if (vps->start >= atop(LIMITMEM * 1024 * 1024)) { 673 /* 674 * If the start is too high, just drop 675 * the whole segment. 676 * 677 * XXX can start != avail_start in this 678 * XXX case? wouldn't that mean that 679 * XXX some memory was stolen above the 680 * XXX limit? What to do? 681 */ 682 ovf = vps->end - vps->start; 683 vm_nphysseg--; 684 } else { 685 /* 686 * If the start is OK, calculate how much 687 * to drop and drop it. 688 */ 689 ovf = vps->end - atop(LIMITMEM * 1024 * 1024); 690 vps->end -= ovf; 691 vps->avail_end -= ovf; 692 } 693 physmem -= ovf; 694 unusedmem += ovf; 695 } while (vps->end > atop(LIMITMEM * 1024 * 1024)); 696 } 697 #endif /* LIMITMEM */ 698 699 maxmem = physmem; 700 701 #if 0 702 printf("totalphysmem = %d\n", totalphysmem); 703 printf("physmem = %d\n", physmem); 704 printf("resvmem = %d\n", resvmem); 705 printf("unusedmem = %d\n", unusedmem); 706 printf("unknownmem = %d\n", unknownmem); 707 #endif 708 709 /* 710 * Adjust some parameters if the amount of physmem 711 * available would cause us to croak. This is completely 712 * eyeballed and isn't meant to be the final answer. 713 * vm_phys_size is probably the only one to really worry 714 * about. 715 * 716 * It's for booting a GENERIC kernel on a large memory platform. 717 */ 718 if (physmem >= atop(128 * 1024 * 1024)) { 719 vm_kmem_size <<= 3; 720 vm_phys_size <<= 2; 721 } 722 723 /* 724 * Initialize error message buffer (at end of core). 725 */ 726 { 727 size_t sz = round_page(MSGBUFSIZE); 728 729 vps = &vm_physmem[vm_nphysseg - 1]; 730 731 /* shrink so that it'll fit in the last segment */ 732 if ((vps->avail_end - vps->avail_start) < atop(sz)) 733 sz = ptoa(vps->avail_end - vps->avail_start); 734 735 vps->end -= atop(sz); 736 vps->avail_end -= atop(sz); 737 msgbufaddr = (caddr_t) ALPHA_PHYS_TO_K0SEG(ptoa(vps->end)); 738 initmsgbuf(msgbufaddr, sz); 739 740 /* Remove the last segment if it now has no pages. */ 741 if (vps->start == vps->end) 742 vm_nphysseg--; 743 744 /* warn if the message buffer had to be shrunk */ 745 if (sz != round_page(MSGBUFSIZE)) 746 printf("WARNING: %ld bytes not available for msgbuf in last cluster (%ld used)\n", 747 round_page(MSGBUFSIZE), sz); 748 749 } 750 751 /* 752 * Init mapping for u page(s) for proc 0 753 */ 754 proc0.p_addr = proc0paddr = 755 (struct user *)pmap_steal_memory(UPAGES * PAGE_SIZE, NULL, NULL); 756 757 /* 758 * Allocate space for system data structures. These data structures 759 * are allocated here instead of cpu_startup() because physical 760 * memory is directly addressable. We don't have to map these into 761 * virtual address space. 762 */ 763 size = (vsize_t)allocsys(0); 764 v = (caddr_t)pmap_steal_memory(size, NULL, NULL); 765 if ((allocsys(v) - v) != size) 766 panic("alpha_init: table size inconsistency"); 767 768 /* 769 * Initialize the virtual memory system, and set the 770 * page table base register in proc 0's PCB. 771 */ 772 pmap_bootstrap(ALPHA_PHYS_TO_K0SEG(ptb << PGSHIFT), 773 hwrpb->rpb_max_asn, hwrpb->rpb_pcs_cnt); 774 775 /* 776 * Initialize the rest of proc 0's PCB, and cache its physical 777 * address. 778 */ 779 proc0.p_md.md_pcbpaddr = 780 (struct pcb *)ALPHA_K0SEG_TO_PHYS((vaddr_t)&proc0paddr->u_pcb); 781 782 /* 783 * Set the kernel sp, reserving space for an (empty) trapframe, 784 * and make proc0's trapframe pointer point to it for sanity. 785 */ 786 proc0paddr->u_pcb.pcb_hw.apcb_ksp = 787 (u_int64_t)proc0paddr + USPACE - sizeof(struct trapframe); 788 proc0.p_md.md_tf = 789 (struct trapframe *)proc0paddr->u_pcb.pcb_hw.apcb_ksp; 790 791 /* 792 * Look at arguments passed to us and compute boothowto. 793 */ 794 795 boothowto = RB_SINGLE; 796 #ifdef KADB 797 boothowto |= RB_KDB; 798 #endif 799 for (p = bootinfo.boot_flags; p && *p != '\0'; p++) { 800 /* 801 * Note that we'd really like to differentiate case here, 802 * but the Alpha AXP Architecture Reference Manual 803 * says that we shouldn't. 804 */ 805 switch (*p) { 806 case 'a': /* autoboot */ 807 case 'A': 808 boothowto &= ~RB_SINGLE; 809 break; 810 811 #ifdef DEBUG 812 case 'c': /* crash dump immediately after autoconfig */ 813 case 'C': 814 boothowto |= RB_DUMP; 815 break; 816 #endif 817 818 #if defined(KGDB) || defined(DDB) 819 case 'd': /* break into the kernel debugger ASAP */ 820 case 'D': 821 boothowto |= RB_KDB; 822 break; 823 #endif 824 825 case 'h': /* always halt, never reboot */ 826 case 'H': 827 boothowto |= RB_HALT; 828 break; 829 830 #if 0 831 case 'm': /* mini root present in memory */ 832 case 'M': 833 boothowto |= RB_MINIROOT; 834 break; 835 #endif 836 837 case 'n': /* askname */ 838 case 'N': 839 boothowto |= RB_ASKNAME; 840 break; 841 842 case 's': /* single-user (default, supported for sanity) */ 843 case 'S': 844 boothowto |= RB_SINGLE; 845 break; 846 847 case '-': 848 /* 849 * Just ignore this. It's not required, but it's 850 * common for it to be passed regardless. 851 */ 852 break; 853 854 default: 855 printf("Unrecognized boot flag '%c'.\n", *p); 856 break; 857 } 858 } 859 860 861 /* 862 * Figure out the number of cpus in the box, from RPB fields. 863 * Really. We mean it. 864 */ 865 for (i = 0; i < hwrpb->rpb_pcs_cnt; i++) { 866 struct pcs *pcsp; 867 868 pcsp = LOCATE_PCS(hwrpb, i); 869 if ((pcsp->pcs_flags & PCS_PP) != 0) 870 ncpus++; 871 } 872 873 /* 874 * Initialize debuggers, and break into them if appropriate. 875 */ 876 #ifdef DDB 877 db_machine_init(); 878 ddb_init((int)((u_int64_t)ksym_end - (u_int64_t)ksym_start), 879 ksym_start, ksym_end); 880 if (boothowto & RB_KDB) 881 Debugger(); 882 #endif 883 #ifdef KGDB 884 if (boothowto & RB_KDB) 885 kgdb_connect(0); 886 #endif 887 /* 888 * Figure out our clock frequency, from RPB fields. 889 */ 890 hz = hwrpb->rpb_intr_freq >> 12; 891 if (!(60 <= hz && hz <= 10240)) { 892 hz = 1024; 893 #ifdef DIAGNOSTIC 894 printf("WARNING: unbelievable rpb_intr_freq: %ld (%d hz)\n", 895 hwrpb->rpb_intr_freq, hz); 896 #endif 897 } 898 } 899 900 /* 901 * Allocate space for system data structures. We are given 902 * a starting virtual address and we return a final virtual 903 * address; along the way we set each data structure pointer. 904 * 905 * We call allocsys() with 0 to find out how much space we want, 906 * allocate that much and fill it with zeroes, and the call 907 * allocsys() again with the correct base virtual address. 908 */ 909 caddr_t 910 allocsys(v) 911 caddr_t v; 912 { 913 914 #define valloc(name, type, num) \ 915 (name) = (type *)v; v = (caddr_t)ALIGN((name)+(num)) 916 917 #ifdef REAL_CLISTS 918 valloc(cfree, struct cblock, nclist); 919 #endif 920 valloc(callout, struct callout, ncallout); 921 #ifdef SYSVSHM 922 valloc(shmsegs, struct shmid_ds, shminfo.shmmni); 923 #endif 924 #ifdef SYSVSEM 925 valloc(sema, struct semid_ds, seminfo.semmni); 926 valloc(sem, struct sem, seminfo.semmns); 927 /* This is pretty disgusting! */ 928 valloc(semu, int, (seminfo.semmnu * seminfo.semusz) / sizeof(int)); 929 #endif 930 #ifdef SYSVMSG 931 valloc(msgpool, char, msginfo.msgmax); 932 valloc(msgmaps, struct msgmap, msginfo.msgseg); 933 valloc(msghdrs, struct msg, msginfo.msgtql); 934 valloc(msqids, struct msqid_ds, msginfo.msgmni); 935 #endif 936 937 /* 938 * Determine how many buffers to allocate. 939 * We allocate bufcache % of memory for buffer space. Insure a 940 * minimum of 16 buffers. We allocate 1/2 as many swap buffer 941 * headers as file i/o buffers. 942 */ 943 if (bufpages == 0) 944 bufpages = physmem / CLSIZE * bufcache / 100; 945 if (nbuf == 0) { 946 nbuf = bufpages; 947 if (nbuf < 16) 948 nbuf = 16; 949 } 950 if (nswbuf == 0) { 951 nswbuf = (nbuf / 2) &~ 1; /* force even */ 952 if (nswbuf > 256) 953 nswbuf = 256; /* sanity */ 954 } 955 valloc(buf, struct buf, nbuf); 956 957 /* 958 * There appears to be a correlation between the number 959 * of processor slots defined in the HWRPB and the whami 960 * value that can be returned. 961 */ 962 valloc(mchkinfo_all_cpus, struct mchkinfo, hwrpb->rpb_pcs_cnt); 963 964 return (v); 965 #undef valloc 966 } 967 968 void 969 consinit() 970 { 971 972 /* 973 * Everything related to console initialization is done 974 * in alpha_init(). 975 */ 976 #if defined(DIAGNOSTIC) && defined(_PMAP_MAY_USE_PROM_CONSOLE) 977 printf("consinit: %susing prom console\n", 978 pmap_uses_prom_console() ? "" : "not "); 979 #endif 980 } 981 982 #include "pckbc.h" 983 #include "pckbd.h" 984 #if (NPCKBC > 0) && (NPCKBD == 0) 985 986 #include <dev/isa/pckbcvar.h> 987 988 /* 989 * This is called by the pbkbc driver if no pckbd is configured. 990 * On the i386, it is used to glue in the old, deprecated console 991 * code. On the Alpha, it does nothing. 992 */ 993 int 994 pckbc_machdep_cnattach(kbctag, kbcslot) 995 pckbc_tag_t kbctag; 996 pckbc_slot_t kbcslot; 997 { 998 999 return (ENXIO); 1000 } 1001 #endif /* NPCKBC > 0 && NPCKBD == 0 */ 1002 1003 void 1004 cpu_startup() 1005 { 1006 register unsigned i; 1007 int base, residual; 1008 vaddr_t minaddr, maxaddr; 1009 vsize_t size; 1010 #if defined(DEBUG) 1011 extern int pmapdebug; 1012 int opmapdebug = pmapdebug; 1013 1014 pmapdebug = 0; 1015 #endif 1016 1017 /* 1018 * Good {morning,afternoon,evening,night}. 1019 */ 1020 printf(version); 1021 identifycpu(); 1022 printf("real mem = %lu (%lu reserved for PROM, %lu used by NetBSD)\n", 1023 ((psize_t) totalphysmem << (psize_t) PAGE_SHIFT), 1024 ptoa(resvmem), ptoa(physmem)); 1025 if (unusedmem) 1026 printf("WARNING: unused memory = %d bytes\n", ctob(unusedmem)); 1027 if (unknownmem) 1028 printf("WARNING: %d bytes of memory with unknown purpose\n", 1029 ctob(unknownmem)); 1030 1031 /* 1032 * Allocate virtual address space for file I/O buffers. 1033 * Note they are different than the array of headers, 'buf', 1034 * and usually occupy more virtual memory than physical. 1035 */ 1036 size = MAXBSIZE * nbuf; 1037 if (uvm_map(kernel_map, (vaddr_t *) &buffers, round_page(size), 1038 NULL, UVM_UNKNOWN_OFFSET, 1039 UVM_MAPFLAG(UVM_PROT_NONE, UVM_PROT_NONE, UVM_INH_NONE, 1040 UVM_ADV_NORMAL, 0)) != KERN_SUCCESS) 1041 panic("startup: cannot allocate VM for buffers"); 1042 base = bufpages / nbuf; 1043 residual = bufpages % nbuf; 1044 for (i = 0; i < nbuf; i++) { 1045 vsize_t curbufsize; 1046 vaddr_t curbuf; 1047 struct vm_page *pg; 1048 1049 /* 1050 * Each buffer has MAXBSIZE bytes of VM space allocated. Of 1051 * that MAXBSIZE space, we allocate and map (base+1) pages 1052 * for the first "residual" buffers, and then we allocate 1053 * "base" pages for the rest. 1054 */ 1055 curbuf = (vaddr_t) buffers + (i * MAXBSIZE); 1056 curbufsize = CLBYTES * ((i < residual) ? (base+1) : base); 1057 1058 while (curbufsize) { 1059 pg = uvm_pagealloc(NULL, 0, NULL); 1060 if (pg == NULL) 1061 panic("cpu_startup: not enough memory for " 1062 "buffer cache"); 1063 #if defined(PMAP_NEW) 1064 pmap_kenter_pgs(curbuf, &pg, 1); 1065 #else 1066 pmap_enter(kernel_map->pmap, curbuf, 1067 VM_PAGE_TO_PHYS(pg), VM_PROT_ALL, TRUE); 1068 #endif 1069 curbuf += PAGE_SIZE; 1070 curbufsize -= PAGE_SIZE; 1071 } 1072 } 1073 /* 1074 * Allocate a submap for exec arguments. This map effectively 1075 * limits the number of processes exec'ing at any time. 1076 */ 1077 exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 1078 16 * NCARGS, TRUE, FALSE, NULL); 1079 1080 /* 1081 * Allocate a submap for physio 1082 */ 1083 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 1084 VM_PHYS_SIZE, TRUE, FALSE, NULL); 1085 1086 /* 1087 * No need to allocate an mbuf cluster submap. Mbuf clusters 1088 * are allocated via the pool allocator, and we use K0SEG to 1089 * map those pages. 1090 */ 1091 1092 /* 1093 * Initialize callouts 1094 */ 1095 callfree = callout; 1096 for (i = 1; i < ncallout; i++) 1097 callout[i-1].c_next = &callout[i]; 1098 callout[i-1].c_next = NULL; 1099 1100 #if defined(DEBUG) 1101 pmapdebug = opmapdebug; 1102 #endif 1103 printf("avail mem = %ld\n", (long)ptoa(uvmexp.free)); 1104 #if 0 1105 { 1106 extern u_long pmap_pages_stolen; 1107 printf("stolen memory for VM structures = %ld bytes\n", 1108 pmap_pages_stolen * PAGE_SIZE); 1109 } 1110 #endif 1111 printf("using %ld buffers containing %ld bytes of memory\n", 1112 (long)nbuf, (long)(bufpages * CLBYTES)); 1113 1114 /* 1115 * Set up buffers, so they can be used to read disk labels. 1116 */ 1117 bufinit(); 1118 1119 /* 1120 * Set up the HWPCB so that it's safe to configure secondary 1121 * CPUs. 1122 */ 1123 hwrpb_primary_init(); 1124 1125 /* 1126 * Configure the system. 1127 */ 1128 configure(); 1129 } 1130 1131 /* 1132 * Retrieve the platform name from the DSR. 1133 */ 1134 const char * 1135 alpha_dsr_sysname() 1136 { 1137 struct dsrdb *dsr; 1138 const char *sysname; 1139 1140 /* 1141 * DSR does not exist on early HWRPB versions. 1142 */ 1143 if (hwrpb->rpb_version < HWRPB_DSRDB_MINVERS) 1144 return (NULL); 1145 1146 dsr = (struct dsrdb *)(((caddr_t)hwrpb) + hwrpb->rpb_dsrdb_off); 1147 sysname = (const char *)((caddr_t)dsr + (dsr->dsr_sysname_off + 1148 sizeof(u_int64_t))); 1149 return (sysname); 1150 } 1151 1152 /* 1153 * Lookup the system specified system variation in the provided table, 1154 * returning the model string on match. 1155 */ 1156 const char * 1157 alpha_variation_name(variation, avtp) 1158 u_int64_t variation; 1159 const struct alpha_variation_table *avtp; 1160 { 1161 int i; 1162 1163 for (i = 0; avtp[i].avt_model != NULL; i++) 1164 if (avtp[i].avt_variation == variation) 1165 return (avtp[i].avt_model); 1166 return (NULL); 1167 } 1168 1169 /* 1170 * Generate a default platform name based for unknown system variations. 1171 */ 1172 const char * 1173 alpha_unknown_sysname() 1174 { 1175 static char s[128]; /* safe size */ 1176 1177 sprintf(s, "%s family, unknown model variation 0x%lx", 1178 platform.family, hwrpb->rpb_variation & SV_ST_MASK); 1179 return ((const char *)s); 1180 } 1181 1182 void 1183 identifycpu() 1184 { 1185 1186 /* 1187 * print out CPU identification information. 1188 */ 1189 printf("%s, %ldMHz\n", cpu_model, 1190 hwrpb->rpb_cc_freq / 1000000); /* XXX true for 21164? */ 1191 printf("%ld byte page size, %d processor%s.\n", 1192 hwrpb->rpb_page_size, ncpus, ncpus == 1 ? "" : "s"); 1193 #if 0 1194 /* this isn't defined for any systems that we run on? */ 1195 printf("serial number 0x%lx 0x%lx\n", 1196 ((long *)hwrpb->rpb_ssn)[0], ((long *)hwrpb->rpb_ssn)[1]); 1197 1198 /* and these aren't particularly useful! */ 1199 printf("variation: 0x%lx, revision 0x%lx\n", 1200 hwrpb->rpb_variation, *(long *)hwrpb->rpb_revision); 1201 #endif 1202 } 1203 1204 int waittime = -1; 1205 struct pcb dumppcb; 1206 1207 void 1208 cpu_reboot(howto, bootstr) 1209 int howto; 1210 char *bootstr; 1211 { 1212 extern int cold; 1213 #if defined(MULTIPROCESSOR) 1214 #if 0 /* XXX See below. */ 1215 u_long cpu_id; 1216 #endif 1217 #endif 1218 1219 #if defined(MULTIPROCESSOR) 1220 /* We must be running on the primary CPU. */ 1221 if (alpha_pal_whami() != hwrpb->rpb_primary_cpu_id) 1222 panic("cpu_reboot: not on primary CPU!"); 1223 #endif 1224 1225 /* If system is cold, just halt. */ 1226 if (cold) { 1227 howto |= RB_HALT; 1228 goto haltsys; 1229 } 1230 1231 /* If "always halt" was specified as a boot flag, obey. */ 1232 if ((boothowto & RB_HALT) != 0) 1233 howto |= RB_HALT; 1234 1235 boothowto = howto; 1236 if ((howto & RB_NOSYNC) == 0 && waittime < 0) { 1237 waittime = 0; 1238 vfs_shutdown(); 1239 /* 1240 * If we've been adjusting the clock, the todr 1241 * will be out of synch; adjust it now. 1242 */ 1243 resettodr(); 1244 } 1245 1246 /* Disable interrupts. */ 1247 splhigh(); 1248 1249 /* If rebooting and a dump is requested do it. */ 1250 #if 0 1251 if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP) 1252 #else 1253 if (howto & RB_DUMP) 1254 #endif 1255 dumpsys(); 1256 1257 haltsys: 1258 1259 /* run any shutdown hooks */ 1260 doshutdownhooks(); 1261 1262 #if defined(MULTIPROCESSOR) 1263 #if 0 /* XXX doesn't work when called from here?! */ 1264 /* Kill off any secondary CPUs. */ 1265 for (cpu_id = 0; cpu_id < hwrpb->rpb_pcs_cnt; cpu_id++) { 1266 if (cpu_id == hwrpb->rpb_primary_cpu_id || 1267 cpu_info[cpu_id].ci_softc == NULL) 1268 continue; 1269 cpu_halt_secondary(cpu_id); 1270 } 1271 #endif 1272 #endif 1273 1274 #ifdef BOOTKEY 1275 printf("hit any key to %s...\n", howto & RB_HALT ? "halt" : "reboot"); 1276 cnpollc(1); /* for proper keyboard command handling */ 1277 cngetc(); 1278 cnpollc(0); 1279 printf("\n"); 1280 #endif 1281 1282 /* Finally, powerdown/halt/reboot the system. */ 1283 if ((howto && RB_POWERDOWN) == RB_POWERDOWN && 1284 platform.powerdown != NULL) { 1285 (*platform.powerdown)(); 1286 printf("WARNING: powerdown failed!\n"); 1287 } 1288 printf("%s\n\n", howto & RB_HALT ? "halted." : "rebooting..."); 1289 prom_halt(howto & RB_HALT); 1290 /*NOTREACHED*/ 1291 } 1292 1293 /* 1294 * These variables are needed by /sbin/savecore 1295 */ 1296 u_long dumpmag = 0x8fca0101; /* magic number */ 1297 int dumpsize = 0; /* pages */ 1298 long dumplo = 0; /* blocks */ 1299 1300 /* 1301 * cpu_dumpsize: calculate size of machine-dependent kernel core dump headers. 1302 */ 1303 int 1304 cpu_dumpsize() 1305 { 1306 int size; 1307 1308 size = ALIGN(sizeof(kcore_seg_t)) + ALIGN(sizeof(cpu_kcore_hdr_t)) + 1309 ALIGN(mem_cluster_cnt * sizeof(phys_ram_seg_t)); 1310 if (roundup(size, dbtob(1)) != dbtob(1)) 1311 return -1; 1312 1313 return (1); 1314 } 1315 1316 /* 1317 * cpu_dump_mempagecnt: calculate size of RAM (in pages) to be dumped. 1318 */ 1319 u_long 1320 cpu_dump_mempagecnt() 1321 { 1322 u_long i, n; 1323 1324 n = 0; 1325 for (i = 0; i < mem_cluster_cnt; i++) 1326 n += atop(mem_clusters[i].size); 1327 return (n); 1328 } 1329 1330 /* 1331 * cpu_dump: dump machine-dependent kernel core dump headers. 1332 */ 1333 int 1334 cpu_dump() 1335 { 1336 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1337 char buf[dbtob(1)]; 1338 kcore_seg_t *segp; 1339 cpu_kcore_hdr_t *cpuhdrp; 1340 phys_ram_seg_t *memsegp; 1341 int i; 1342 1343 dump = bdevsw[major(dumpdev)].d_dump; 1344 1345 bzero(buf, sizeof buf); 1346 segp = (kcore_seg_t *)buf; 1347 cpuhdrp = (cpu_kcore_hdr_t *)&buf[ALIGN(sizeof(*segp))]; 1348 memsegp = (phys_ram_seg_t *)&buf[ ALIGN(sizeof(*segp)) + 1349 ALIGN(sizeof(*cpuhdrp))]; 1350 1351 /* 1352 * Generate a segment header. 1353 */ 1354 CORE_SETMAGIC(*segp, KCORE_MAGIC, MID_MACHINE, CORE_CPU); 1355 segp->c_size = dbtob(1) - ALIGN(sizeof(*segp)); 1356 1357 /* 1358 * Add the machine-dependent header info. 1359 */ 1360 cpuhdrp->lev1map_pa = ALPHA_K0SEG_TO_PHYS((vaddr_t)kernel_lev1map); 1361 cpuhdrp->page_size = PAGE_SIZE; 1362 cpuhdrp->nmemsegs = mem_cluster_cnt; 1363 1364 /* 1365 * Fill in the memory segment descriptors. 1366 */ 1367 for (i = 0; i < mem_cluster_cnt; i++) { 1368 memsegp[i].start = mem_clusters[i].start; 1369 memsegp[i].size = mem_clusters[i].size & ~PAGE_MASK; 1370 } 1371 1372 return (dump(dumpdev, dumplo, (caddr_t)buf, dbtob(1))); 1373 } 1374 1375 /* 1376 * This is called by main to set dumplo and dumpsize. 1377 * Dumps always skip the first CLBYTES of disk space 1378 * in case there might be a disk label stored there. 1379 * If there is extra space, put dump at the end to 1380 * reduce the chance that swapping trashes it. 1381 */ 1382 void 1383 cpu_dumpconf() 1384 { 1385 int nblks, dumpblks; /* size of dump area */ 1386 int maj; 1387 1388 if (dumpdev == NODEV) 1389 goto bad; 1390 maj = major(dumpdev); 1391 if (maj < 0 || maj >= nblkdev) 1392 panic("dumpconf: bad dumpdev=0x%x", dumpdev); 1393 if (bdevsw[maj].d_psize == NULL) 1394 goto bad; 1395 nblks = (*bdevsw[maj].d_psize)(dumpdev); 1396 if (nblks <= ctod(1)) 1397 goto bad; 1398 1399 dumpblks = cpu_dumpsize(); 1400 if (dumpblks < 0) 1401 goto bad; 1402 dumpblks += ctod(cpu_dump_mempagecnt()); 1403 1404 /* If dump won't fit (incl. room for possible label), punt. */ 1405 if (dumpblks > (nblks - ctod(1))) 1406 goto bad; 1407 1408 /* Put dump at end of partition */ 1409 dumplo = nblks - dumpblks; 1410 1411 /* dumpsize is in page units, and doesn't include headers. */ 1412 dumpsize = cpu_dump_mempagecnt(); 1413 return; 1414 1415 bad: 1416 dumpsize = 0; 1417 return; 1418 } 1419 1420 /* 1421 * Dump the kernel's image to the swap partition. 1422 */ 1423 #define BYTES_PER_DUMP NBPG 1424 1425 void 1426 dumpsys() 1427 { 1428 u_long totalbytesleft, bytes, i, n, memcl; 1429 u_long maddr; 1430 int psize; 1431 daddr_t blkno; 1432 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1433 int error; 1434 1435 /* Save registers. */ 1436 savectx(&dumppcb); 1437 1438 msgbufenabled = 0; /* don't record dump msgs in msgbuf */ 1439 if (dumpdev == NODEV) 1440 return; 1441 1442 /* 1443 * For dumps during autoconfiguration, 1444 * if dump device has already configured... 1445 */ 1446 if (dumpsize == 0) 1447 cpu_dumpconf(); 1448 if (dumplo <= 0) { 1449 printf("\ndump to dev %u,%u not possible\n", major(dumpdev), 1450 minor(dumpdev)); 1451 return; 1452 } 1453 printf("\ndumping to dev %u,%u offset %ld\n", major(dumpdev), 1454 minor(dumpdev), dumplo); 1455 1456 psize = (*bdevsw[major(dumpdev)].d_psize)(dumpdev); 1457 printf("dump "); 1458 if (psize == -1) { 1459 printf("area unavailable\n"); 1460 return; 1461 } 1462 1463 /* XXX should purge all outstanding keystrokes. */ 1464 1465 if ((error = cpu_dump()) != 0) 1466 goto err; 1467 1468 totalbytesleft = ptoa(cpu_dump_mempagecnt()); 1469 blkno = dumplo + cpu_dumpsize(); 1470 dump = bdevsw[major(dumpdev)].d_dump; 1471 error = 0; 1472 1473 for (memcl = 0; memcl < mem_cluster_cnt; memcl++) { 1474 maddr = mem_clusters[memcl].start; 1475 bytes = mem_clusters[memcl].size & ~PAGE_MASK; 1476 1477 for (i = 0; i < bytes; i += n, totalbytesleft -= n) { 1478 1479 /* Print out how many MBs we to go. */ 1480 if ((totalbytesleft % (1024*1024)) == 0) 1481 printf("%ld ", totalbytesleft / (1024 * 1024)); 1482 1483 /* Limit size for next transfer. */ 1484 n = bytes - i; 1485 if (n > BYTES_PER_DUMP) 1486 n = BYTES_PER_DUMP; 1487 1488 error = (*dump)(dumpdev, blkno, 1489 (caddr_t)ALPHA_PHYS_TO_K0SEG(maddr), n); 1490 if (error) 1491 goto err; 1492 maddr += n; 1493 blkno += btodb(n); /* XXX? */ 1494 1495 /* XXX should look for keystrokes, to cancel. */ 1496 } 1497 } 1498 1499 err: 1500 switch (error) { 1501 1502 case ENXIO: 1503 printf("device bad\n"); 1504 break; 1505 1506 case EFAULT: 1507 printf("device not ready\n"); 1508 break; 1509 1510 case EINVAL: 1511 printf("area improper\n"); 1512 break; 1513 1514 case EIO: 1515 printf("i/o error\n"); 1516 break; 1517 1518 case EINTR: 1519 printf("aborted from console\n"); 1520 break; 1521 1522 case 0: 1523 printf("succeeded\n"); 1524 break; 1525 1526 default: 1527 printf("error %d\n", error); 1528 break; 1529 } 1530 printf("\n\n"); 1531 delay(1000); 1532 } 1533 1534 void 1535 frametoreg(framep, regp) 1536 struct trapframe *framep; 1537 struct reg *regp; 1538 { 1539 1540 regp->r_regs[R_V0] = framep->tf_regs[FRAME_V0]; 1541 regp->r_regs[R_T0] = framep->tf_regs[FRAME_T0]; 1542 regp->r_regs[R_T1] = framep->tf_regs[FRAME_T1]; 1543 regp->r_regs[R_T2] = framep->tf_regs[FRAME_T2]; 1544 regp->r_regs[R_T3] = framep->tf_regs[FRAME_T3]; 1545 regp->r_regs[R_T4] = framep->tf_regs[FRAME_T4]; 1546 regp->r_regs[R_T5] = framep->tf_regs[FRAME_T5]; 1547 regp->r_regs[R_T6] = framep->tf_regs[FRAME_T6]; 1548 regp->r_regs[R_T7] = framep->tf_regs[FRAME_T7]; 1549 regp->r_regs[R_S0] = framep->tf_regs[FRAME_S0]; 1550 regp->r_regs[R_S1] = framep->tf_regs[FRAME_S1]; 1551 regp->r_regs[R_S2] = framep->tf_regs[FRAME_S2]; 1552 regp->r_regs[R_S3] = framep->tf_regs[FRAME_S3]; 1553 regp->r_regs[R_S4] = framep->tf_regs[FRAME_S4]; 1554 regp->r_regs[R_S5] = framep->tf_regs[FRAME_S5]; 1555 regp->r_regs[R_S6] = framep->tf_regs[FRAME_S6]; 1556 regp->r_regs[R_A0] = framep->tf_regs[FRAME_A0]; 1557 regp->r_regs[R_A1] = framep->tf_regs[FRAME_A1]; 1558 regp->r_regs[R_A2] = framep->tf_regs[FRAME_A2]; 1559 regp->r_regs[R_A3] = framep->tf_regs[FRAME_A3]; 1560 regp->r_regs[R_A4] = framep->tf_regs[FRAME_A4]; 1561 regp->r_regs[R_A5] = framep->tf_regs[FRAME_A5]; 1562 regp->r_regs[R_T8] = framep->tf_regs[FRAME_T8]; 1563 regp->r_regs[R_T9] = framep->tf_regs[FRAME_T9]; 1564 regp->r_regs[R_T10] = framep->tf_regs[FRAME_T10]; 1565 regp->r_regs[R_T11] = framep->tf_regs[FRAME_T11]; 1566 regp->r_regs[R_RA] = framep->tf_regs[FRAME_RA]; 1567 regp->r_regs[R_T12] = framep->tf_regs[FRAME_T12]; 1568 regp->r_regs[R_AT] = framep->tf_regs[FRAME_AT]; 1569 regp->r_regs[R_GP] = framep->tf_regs[FRAME_GP]; 1570 /* regp->r_regs[R_SP] = framep->tf_regs[FRAME_SP]; XXX */ 1571 regp->r_regs[R_ZERO] = 0; 1572 } 1573 1574 void 1575 regtoframe(regp, framep) 1576 struct reg *regp; 1577 struct trapframe *framep; 1578 { 1579 1580 framep->tf_regs[FRAME_V0] = regp->r_regs[R_V0]; 1581 framep->tf_regs[FRAME_T0] = regp->r_regs[R_T0]; 1582 framep->tf_regs[FRAME_T1] = regp->r_regs[R_T1]; 1583 framep->tf_regs[FRAME_T2] = regp->r_regs[R_T2]; 1584 framep->tf_regs[FRAME_T3] = regp->r_regs[R_T3]; 1585 framep->tf_regs[FRAME_T4] = regp->r_regs[R_T4]; 1586 framep->tf_regs[FRAME_T5] = regp->r_regs[R_T5]; 1587 framep->tf_regs[FRAME_T6] = regp->r_regs[R_T6]; 1588 framep->tf_regs[FRAME_T7] = regp->r_regs[R_T7]; 1589 framep->tf_regs[FRAME_S0] = regp->r_regs[R_S0]; 1590 framep->tf_regs[FRAME_S1] = regp->r_regs[R_S1]; 1591 framep->tf_regs[FRAME_S2] = regp->r_regs[R_S2]; 1592 framep->tf_regs[FRAME_S3] = regp->r_regs[R_S3]; 1593 framep->tf_regs[FRAME_S4] = regp->r_regs[R_S4]; 1594 framep->tf_regs[FRAME_S5] = regp->r_regs[R_S5]; 1595 framep->tf_regs[FRAME_S6] = regp->r_regs[R_S6]; 1596 framep->tf_regs[FRAME_A0] = regp->r_regs[R_A0]; 1597 framep->tf_regs[FRAME_A1] = regp->r_regs[R_A1]; 1598 framep->tf_regs[FRAME_A2] = regp->r_regs[R_A2]; 1599 framep->tf_regs[FRAME_A3] = regp->r_regs[R_A3]; 1600 framep->tf_regs[FRAME_A4] = regp->r_regs[R_A4]; 1601 framep->tf_regs[FRAME_A5] = regp->r_regs[R_A5]; 1602 framep->tf_regs[FRAME_T8] = regp->r_regs[R_T8]; 1603 framep->tf_regs[FRAME_T9] = regp->r_regs[R_T9]; 1604 framep->tf_regs[FRAME_T10] = regp->r_regs[R_T10]; 1605 framep->tf_regs[FRAME_T11] = regp->r_regs[R_T11]; 1606 framep->tf_regs[FRAME_RA] = regp->r_regs[R_RA]; 1607 framep->tf_regs[FRAME_T12] = regp->r_regs[R_T12]; 1608 framep->tf_regs[FRAME_AT] = regp->r_regs[R_AT]; 1609 framep->tf_regs[FRAME_GP] = regp->r_regs[R_GP]; 1610 /* framep->tf_regs[FRAME_SP] = regp->r_regs[R_SP]; XXX */ 1611 /* ??? = regp->r_regs[R_ZERO]; */ 1612 } 1613 1614 void 1615 printregs(regp) 1616 struct reg *regp; 1617 { 1618 int i; 1619 1620 for (i = 0; i < 32; i++) 1621 printf("R%d:\t0x%016lx%s", i, regp->r_regs[i], 1622 i & 1 ? "\n" : "\t"); 1623 } 1624 1625 void 1626 regdump(framep) 1627 struct trapframe *framep; 1628 { 1629 struct reg reg; 1630 1631 frametoreg(framep, ®); 1632 reg.r_regs[R_SP] = alpha_pal_rdusp(); 1633 1634 printf("REGISTERS:\n"); 1635 printregs(®); 1636 } 1637 1638 #ifdef DEBUG 1639 int sigdebug = 0; 1640 int sigpid = 0; 1641 #define SDB_FOLLOW 0x01 1642 #define SDB_KSTACK 0x02 1643 #endif 1644 1645 /* 1646 * Send an interrupt to process. 1647 */ 1648 void 1649 sendsig(catcher, sig, mask, code) 1650 sig_t catcher; 1651 int sig; 1652 sigset_t *mask; 1653 u_long code; 1654 { 1655 struct proc *p = curproc; 1656 struct sigcontext *scp, ksc; 1657 struct trapframe *frame; 1658 struct sigacts *psp = p->p_sigacts; 1659 int onstack, fsize, rndfsize; 1660 1661 frame = p->p_md.md_tf; 1662 1663 /* Do we need to jump onto the signal stack? */ 1664 onstack = 1665 (psp->ps_sigstk.ss_flags & (SS_DISABLE | SS_ONSTACK)) == 0 && 1666 (psp->ps_sigact[sig].sa_flags & SA_ONSTACK) != 0; 1667 1668 /* Allocate space for the signal handler context. */ 1669 fsize = sizeof(ksc); 1670 rndfsize = ((fsize + 15) / 16) * 16; 1671 1672 if (onstack) 1673 scp = (struct sigcontext *)((caddr_t)psp->ps_sigstk.ss_sp + 1674 psp->ps_sigstk.ss_size); 1675 else 1676 scp = (struct sigcontext *)(alpha_pal_rdusp()); 1677 scp = (struct sigcontext *)((caddr_t)scp - rndfsize); 1678 1679 #ifdef DEBUG 1680 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1681 printf("sendsig(%d): sig %d ssp %p usp %p\n", p->p_pid, 1682 sig, &onstack, scp); 1683 #endif 1684 1685 /* Build stack frame for signal trampoline. */ 1686 ksc.sc_pc = frame->tf_regs[FRAME_PC]; 1687 ksc.sc_ps = frame->tf_regs[FRAME_PS]; 1688 1689 /* Save register context. */ 1690 frametoreg(frame, (struct reg *)ksc.sc_regs); 1691 ksc.sc_regs[R_ZERO] = 0xACEDBADE; /* magic number */ 1692 ksc.sc_regs[R_SP] = alpha_pal_rdusp(); 1693 1694 /* save the floating-point state, if necessary, then copy it. */ 1695 if (p == fpcurproc) { 1696 alpha_pal_wrfen(1); 1697 savefpstate(&p->p_addr->u_pcb.pcb_fp); 1698 alpha_pal_wrfen(0); 1699 fpcurproc = NULL; 1700 } 1701 ksc.sc_ownedfp = p->p_md.md_flags & MDP_FPUSED; 1702 bcopy(&p->p_addr->u_pcb.pcb_fp, (struct fpreg *)ksc.sc_fpregs, 1703 sizeof(struct fpreg)); 1704 ksc.sc_fp_control = 0; /* XXX ? */ 1705 bzero(ksc.sc_reserved, sizeof ksc.sc_reserved); /* XXX */ 1706 bzero(ksc.sc_xxx, sizeof ksc.sc_xxx); /* XXX */ 1707 1708 /* Save signal stack. */ 1709 ksc.sc_onstack = psp->ps_sigstk.ss_flags & SS_ONSTACK; 1710 1711 /* Save signal mask. */ 1712 ksc.sc_mask = *mask; 1713 1714 #ifdef COMPAT_13 1715 /* 1716 * XXX We always have to save an old style signal mask because 1717 * XXX we might be delivering a signal to a process which will 1718 * XXX escape from the signal in a non-standard way and invoke 1719 * XXX sigreturn() directly. 1720 */ 1721 { 1722 /* Note: it's a long in the stack frame. */ 1723 sigset13_t mask13; 1724 1725 native_sigset_to_sigset13(mask, &mask13); 1726 ksc.__sc_mask13 = mask13; 1727 } 1728 #endif 1729 1730 #ifdef COMPAT_OSF1 1731 /* 1732 * XXX Create an OSF/1-style sigcontext and associated goo. 1733 */ 1734 #endif 1735 1736 if (copyout(&ksc, (caddr_t)scp, fsize) != 0) { 1737 /* 1738 * Process has trashed its stack; give it an illegal 1739 * instruction to halt it in its tracks. 1740 */ 1741 #ifdef DEBUG 1742 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1743 printf("sendsig(%d): copyout failed on sig %d\n", 1744 p->p_pid, sig); 1745 #endif 1746 sigexit(p, SIGILL); 1747 /* NOTREACHED */ 1748 } 1749 #ifdef DEBUG 1750 if (sigdebug & SDB_FOLLOW) 1751 printf("sendsig(%d): sig %d scp %p code %lx\n", p->p_pid, sig, 1752 scp, code); 1753 #endif 1754 1755 /* Set up the registers to return to sigcode. */ 1756 frame->tf_regs[FRAME_PC] = (u_int64_t)psp->ps_sigcode; 1757 frame->tf_regs[FRAME_A0] = sig; 1758 frame->tf_regs[FRAME_A1] = code; 1759 frame->tf_regs[FRAME_A2] = (u_int64_t)scp; 1760 frame->tf_regs[FRAME_T12] = (u_int64_t)catcher; /* t12 is pv */ 1761 alpha_pal_wrusp((unsigned long)scp); 1762 1763 /* Remember that we're now on the signal stack. */ 1764 if (onstack) 1765 psp->ps_sigstk.ss_flags |= SS_ONSTACK; 1766 1767 #ifdef DEBUG 1768 if (sigdebug & SDB_FOLLOW) 1769 printf("sendsig(%d): pc %lx, catcher %lx\n", p->p_pid, 1770 frame->tf_regs[FRAME_PC], frame->tf_regs[FRAME_A3]); 1771 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1772 printf("sendsig(%d): sig %d returns\n", 1773 p->p_pid, sig); 1774 #endif 1775 } 1776 1777 /* 1778 * System call to cleanup state after a signal 1779 * has been taken. Reset signal mask and 1780 * stack state from context left by sendsig (above). 1781 * Return to previous pc and psl as specified by 1782 * context left by sendsig. Check carefully to 1783 * make sure that the user has not modified the 1784 * psl to gain improper priviledges or to cause 1785 * a machine fault. 1786 */ 1787 /* ARGSUSED */ 1788 int 1789 sys___sigreturn14(p, v, retval) 1790 struct proc *p; 1791 void *v; 1792 register_t *retval; 1793 { 1794 struct sys___sigreturn14_args /* { 1795 syscallarg(struct sigcontext *) sigcntxp; 1796 } */ *uap = v; 1797 struct sigcontext *scp, ksc; 1798 1799 /* 1800 * The trampoline code hands us the context. 1801 * It is unsafe to keep track of it ourselves, in the event that a 1802 * program jumps out of a signal handler. 1803 */ 1804 scp = SCARG(uap, sigcntxp); 1805 #ifdef DEBUG 1806 if (sigdebug & SDB_FOLLOW) 1807 printf("sigreturn: pid %d, scp %p\n", p->p_pid, scp); 1808 #endif 1809 if (ALIGN(scp) != (u_int64_t)scp) 1810 return (EINVAL); 1811 1812 if (copyin((caddr_t)scp, &ksc, sizeof(ksc)) != 0) 1813 return (EFAULT); 1814 1815 if (ksc.sc_regs[R_ZERO] != 0xACEDBADE) /* magic number */ 1816 return (EINVAL); 1817 1818 /* Restore register context. */ 1819 p->p_md.md_tf->tf_regs[FRAME_PC] = ksc.sc_pc; 1820 p->p_md.md_tf->tf_regs[FRAME_PS] = 1821 (ksc.sc_ps | ALPHA_PSL_USERSET) & ~ALPHA_PSL_USERCLR; 1822 1823 regtoframe((struct reg *)ksc.sc_regs, p->p_md.md_tf); 1824 alpha_pal_wrusp(ksc.sc_regs[R_SP]); 1825 1826 /* XXX ksc.sc_ownedfp ? */ 1827 if (p == fpcurproc) 1828 fpcurproc = NULL; 1829 bcopy((struct fpreg *)ksc.sc_fpregs, &p->p_addr->u_pcb.pcb_fp, 1830 sizeof(struct fpreg)); 1831 /* XXX ksc.sc_fp_control ? */ 1832 1833 /* Restore signal stack. */ 1834 if (ksc.sc_onstack & SS_ONSTACK) 1835 p->p_sigacts->ps_sigstk.ss_flags |= SS_ONSTACK; 1836 else 1837 p->p_sigacts->ps_sigstk.ss_flags &= ~SS_ONSTACK; 1838 1839 /* Restore signal mask. */ 1840 (void) sigprocmask1(p, SIG_SETMASK, &ksc.sc_mask, 0); 1841 1842 #ifdef DEBUG 1843 if (sigdebug & SDB_FOLLOW) 1844 printf("sigreturn(%d): returns\n", p->p_pid); 1845 #endif 1846 return (EJUSTRETURN); 1847 } 1848 1849 /* 1850 * machine dependent system variables. 1851 */ 1852 int 1853 cpu_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 1854 int *name; 1855 u_int namelen; 1856 void *oldp; 1857 size_t *oldlenp; 1858 void *newp; 1859 size_t newlen; 1860 struct proc *p; 1861 { 1862 dev_t consdev; 1863 1864 /* all sysctl names at this level are terminal */ 1865 if (namelen != 1) 1866 return (ENOTDIR); /* overloaded */ 1867 1868 switch (name[0]) { 1869 case CPU_CONSDEV: 1870 if (cn_tab != NULL) 1871 consdev = cn_tab->cn_dev; 1872 else 1873 consdev = NODEV; 1874 return (sysctl_rdstruct(oldp, oldlenp, newp, &consdev, 1875 sizeof consdev)); 1876 1877 case CPU_ROOT_DEVICE: 1878 return (sysctl_rdstring(oldp, oldlenp, newp, 1879 root_device->dv_xname)); 1880 1881 case CPU_UNALIGNED_PRINT: 1882 return (sysctl_int(oldp, oldlenp, newp, newlen, 1883 &alpha_unaligned_print)); 1884 1885 case CPU_UNALIGNED_FIX: 1886 return (sysctl_int(oldp, oldlenp, newp, newlen, 1887 &alpha_unaligned_fix)); 1888 1889 case CPU_UNALIGNED_SIGBUS: 1890 return (sysctl_int(oldp, oldlenp, newp, newlen, 1891 &alpha_unaligned_sigbus)); 1892 1893 case CPU_BOOTED_KERNEL: 1894 return (sysctl_rdstring(oldp, oldlenp, newp, 1895 bootinfo.booted_kernel)); 1896 1897 default: 1898 return (EOPNOTSUPP); 1899 } 1900 /* NOTREACHED */ 1901 } 1902 1903 /* 1904 * Set registers on exec. 1905 */ 1906 void 1907 setregs(p, pack, stack) 1908 register struct proc *p; 1909 struct exec_package *pack; 1910 u_long stack; 1911 { 1912 struct trapframe *tfp = p->p_md.md_tf; 1913 #ifdef DEBUG 1914 int i; 1915 #endif 1916 1917 #ifdef DEBUG 1918 /* 1919 * Crash and dump, if the user requested it. 1920 */ 1921 if (boothowto & RB_DUMP) 1922 panic("crash requested by boot flags"); 1923 #endif 1924 1925 #ifdef DEBUG 1926 for (i = 0; i < FRAME_SIZE; i++) 1927 tfp->tf_regs[i] = 0xbabefacedeadbeef; 1928 #else 1929 bzero(tfp->tf_regs, FRAME_SIZE * sizeof tfp->tf_regs[0]); 1930 #endif 1931 bzero(&p->p_addr->u_pcb.pcb_fp, sizeof p->p_addr->u_pcb.pcb_fp); 1932 #define FP_RN 2 /* XXX */ 1933 p->p_addr->u_pcb.pcb_fp.fpr_cr = (long)FP_RN << 58; 1934 alpha_pal_wrusp(stack); 1935 tfp->tf_regs[FRAME_PS] = ALPHA_PSL_USERSET; 1936 tfp->tf_regs[FRAME_PC] = pack->ep_entry & ~3; 1937 1938 tfp->tf_regs[FRAME_A0] = stack; /* a0 = sp */ 1939 tfp->tf_regs[FRAME_A1] = 0; /* a1 = rtld cleanup */ 1940 tfp->tf_regs[FRAME_A2] = 0; /* a2 = rtld object */ 1941 tfp->tf_regs[FRAME_A3] = (u_int64_t)PS_STRINGS; /* a3 = ps_strings */ 1942 tfp->tf_regs[FRAME_T12] = tfp->tf_regs[FRAME_PC]; /* a.k.a. PV */ 1943 1944 p->p_md.md_flags &= ~MDP_FPUSED; 1945 if (fpcurproc == p) 1946 fpcurproc = NULL; 1947 } 1948 1949 void 1950 netintr() 1951 { 1952 int n, s; 1953 1954 s = splhigh(); 1955 n = netisr; 1956 netisr = 0; 1957 splx(s); 1958 1959 #define DONETISR(bit, fn) \ 1960 do { \ 1961 if (n & (1 << (bit))) \ 1962 fn; \ 1963 } while (0) 1964 1965 #ifdef INET 1966 #if NARP > 0 1967 DONETISR(NETISR_ARP, arpintr()); 1968 #endif 1969 DONETISR(NETISR_IP, ipintr()); 1970 #endif 1971 #ifdef NETATALK 1972 DONETISR(NETISR_ATALK, atintr()); 1973 #endif 1974 #ifdef NS 1975 DONETISR(NETISR_NS, nsintr()); 1976 #endif 1977 #ifdef ISO 1978 DONETISR(NETISR_ISO, clnlintr()); 1979 #endif 1980 #ifdef CCITT 1981 DONETISR(NETISR_CCITT, ccittintr()); 1982 #endif 1983 #ifdef NATM 1984 DONETISR(NETISR_NATM, natmintr()); 1985 #endif 1986 #if NPPP > 1 1987 DONETISR(NETISR_PPP, pppintr()); 1988 #endif 1989 1990 #undef DONETISR 1991 } 1992 1993 void 1994 do_sir() 1995 { 1996 u_int64_t n; 1997 1998 do { 1999 (void)splhigh(); 2000 n = ssir; 2001 ssir = 0; 2002 splsoft(); /* don't recurse through spl0() */ 2003 2004 #define COUNT_SOFT uvmexp.softs++ 2005 2006 #define DO_SIR(bit, fn) \ 2007 do { \ 2008 if (n & (bit)) { \ 2009 COUNT_SOFT; \ 2010 fn; \ 2011 } \ 2012 } while (0) 2013 2014 DO_SIR(SIR_NET, netintr()); 2015 DO_SIR(SIR_CLOCK, softclock()); 2016 #if NCOM > 0 2017 DO_SIR(SIR_SERIAL, comsoft()); 2018 #endif 2019 2020 #undef COUNT_SOFT 2021 #undef DO_SIR 2022 } while (ssir != 0); 2023 } 2024 2025 int 2026 spl0() 2027 { 2028 2029 if (ssir) 2030 do_sir(); /* it lowers the IPL itself */ 2031 2032 return (alpha_pal_swpipl(ALPHA_PSL_IPL_0)); 2033 } 2034 2035 /* 2036 * The following primitives manipulate the run queues. _whichqs tells which 2037 * of the 32 queues _qs have processes in them. Setrunqueue puts processes 2038 * into queues, Remrunqueue removes them from queues. The running process is 2039 * on no queue, other processes are on a queue related to p->p_priority, 2040 * divided by 4 actually to shrink the 0-127 range of priorities into the 32 2041 * available queues. 2042 */ 2043 /* 2044 * setrunqueue(p) 2045 * proc *p; 2046 * 2047 * Call should be made at splclock(), and p->p_stat should be SRUN. 2048 */ 2049 2050 void 2051 setrunqueue(p) 2052 struct proc *p; 2053 { 2054 int bit; 2055 2056 /* firewall: p->p_back must be NULL */ 2057 if (p->p_back != NULL) 2058 panic("setrunqueue"); 2059 2060 bit = p->p_priority >> 2; 2061 whichqs |= (1 << bit); 2062 p->p_forw = (struct proc *)&qs[bit]; 2063 p->p_back = qs[bit].ph_rlink; 2064 p->p_back->p_forw = p; 2065 qs[bit].ph_rlink = p; 2066 } 2067 2068 /* 2069 * remrunqueue(p) 2070 * 2071 * Call should be made at splclock(). 2072 */ 2073 void 2074 remrunqueue(p) 2075 struct proc *p; 2076 { 2077 int bit; 2078 2079 bit = p->p_priority >> 2; 2080 if ((whichqs & (1 << bit)) == 0) 2081 panic("remrunqueue"); 2082 2083 p->p_back->p_forw = p->p_forw; 2084 p->p_forw->p_back = p->p_back; 2085 p->p_back = NULL; /* for firewall checking. */ 2086 2087 if ((struct proc *)&qs[bit] == qs[bit].ph_link) 2088 whichqs &= ~(1 << bit); 2089 } 2090 2091 /* 2092 * Return the best possible estimate of the time in the timeval 2093 * to which tvp points. Unfortunately, we can't read the hardware registers. 2094 * We guarantee that the time will be greater than the value obtained by a 2095 * previous call. 2096 */ 2097 void 2098 microtime(tvp) 2099 register struct timeval *tvp; 2100 { 2101 int s = splclock(); 2102 static struct timeval lasttime; 2103 2104 *tvp = time; 2105 #ifdef notdef 2106 tvp->tv_usec += clkread(); 2107 while (tvp->tv_usec > 1000000) { 2108 tvp->tv_sec++; 2109 tvp->tv_usec -= 1000000; 2110 } 2111 #endif 2112 if (tvp->tv_sec == lasttime.tv_sec && 2113 tvp->tv_usec <= lasttime.tv_usec && 2114 (tvp->tv_usec = lasttime.tv_usec + 1) > 1000000) { 2115 tvp->tv_sec++; 2116 tvp->tv_usec -= 1000000; 2117 } 2118 lasttime = *tvp; 2119 splx(s); 2120 } 2121 2122 /* 2123 * Wait "n" microseconds. 2124 */ 2125 void 2126 delay(n) 2127 unsigned long n; 2128 { 2129 long N = cycles_per_usec * (n); 2130 2131 while (N > 0) /* XXX */ 2132 N -= 3; /* XXX */ 2133 } 2134 2135 #if defined(COMPAT_OSF1) || 1 /* XXX */ 2136 void cpu_exec_ecoff_setregs __P((struct proc *, struct exec_package *, 2137 u_long)); 2138 2139 void 2140 cpu_exec_ecoff_setregs(p, epp, stack) 2141 struct proc *p; 2142 struct exec_package *epp; 2143 u_long stack; 2144 { 2145 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2146 2147 setregs(p, epp, stack); 2148 p->p_md.md_tf->tf_regs[FRAME_GP] = execp->a.gp_value; 2149 } 2150 2151 /* 2152 * cpu_exec_ecoff_hook(): 2153 * cpu-dependent ECOFF format hook for execve(). 2154 * 2155 * Do any machine-dependent diddling of the exec package when doing ECOFF. 2156 * 2157 */ 2158 int 2159 cpu_exec_ecoff_hook(p, epp) 2160 struct proc *p; 2161 struct exec_package *epp; 2162 { 2163 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2164 extern struct emul emul_netbsd; 2165 #ifdef COMPAT_OSF1 2166 extern struct emul emul_osf1; 2167 #endif 2168 2169 switch (execp->f.f_magic) { 2170 #ifdef COMPAT_OSF1 2171 case ECOFF_MAGIC_ALPHA: 2172 epp->ep_emul = &emul_osf1; 2173 break; 2174 #endif 2175 2176 case ECOFF_MAGIC_NETBSD_ALPHA: 2177 epp->ep_emul = &emul_netbsd; 2178 break; 2179 2180 default: 2181 return ENOEXEC; 2182 } 2183 return 0; 2184 } 2185 #endif 2186 2187 int 2188 alpha_pa_access(pa) 2189 u_long pa; 2190 { 2191 int i; 2192 2193 for (i = 0; i < mem_cluster_cnt; i++) { 2194 if (pa < mem_clusters[i].start) 2195 continue; 2196 if ((pa - mem_clusters[i].start) >= 2197 (mem_clusters[i].size & ~PAGE_MASK)) 2198 continue; 2199 return (mem_clusters[i].size & PAGE_MASK); /* prot */ 2200 } 2201 return (PROT_NONE); 2202 } 2203 2204 /* XXX XXX BEGIN XXX XXX */ 2205 paddr_t alpha_XXX_dmamap_or; /* XXX */ 2206 /* XXX */ 2207 paddr_t /* XXX */ 2208 alpha_XXX_dmamap(v) /* XXX */ 2209 vaddr_t v; /* XXX */ 2210 { /* XXX */ 2211 /* XXX */ 2212 return (vtophys(v) | alpha_XXX_dmamap_or); /* XXX */ 2213 } /* XXX */ 2214 /* XXX XXX END XXX XXX */ 2215 2216 struct mchkinfo * 2217 cpu_mchkinfo() 2218 { 2219 if (mchkinfo_all_cpus == NULL) 2220 return &startup_info; 2221 return mchkinfo_all_cpus + alpha_pal_whami(); 2222 } 2223
Indexes created Thu Oct 02 14:10:14 GMT 2025