machdep.c revision 1.139
1 /* $NetBSD: machdep.c,v 1.139 1998/08/04 22:40:17 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_ddb.h" 68 #include "opt_uvm.h" 69 #include "opt_pmap_new.h" 70 #include "opt_dec_3000_300.h" 71 #include "opt_dec_3000_500.h" 72 #include "opt_compat_osf1.h" 73 #include "opt_inet.h" 74 #include "opt_atalk.h" 75 #include "opt_ccitt.h" 76 #include "opt_iso.h" 77 #include "opt_ns.h" 78 #include "opt_natm.h" 79 80 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 81 82 __KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.139 1998/08/04 22:40:17 thorpej Exp $"); 83 84 #include <sys/param.h> 85 #include <sys/systm.h> 86 #include <sys/signalvar.h> 87 #include <sys/kernel.h> 88 #include <sys/map.h> 89 #include <sys/proc.h> 90 #include <sys/buf.h> 91 #include <sys/reboot.h> 92 #include <sys/device.h> 93 #include <sys/file.h> 94 #ifdef REAL_CLISTS 95 #include <sys/clist.h> 96 #endif 97 #include <sys/callout.h> 98 #include <sys/malloc.h> 99 #include <sys/mbuf.h> 100 #include <sys/mman.h> 101 #include <sys/msgbuf.h> 102 #include <sys/ioctl.h> 103 #include <sys/tty.h> 104 #include <sys/user.h> 105 #include <sys/exec.h> 106 #include <sys/exec_ecoff.h> 107 #include <vm/vm.h> 108 #include <sys/sysctl.h> 109 #include <sys/core.h> 110 #include <sys/kcore.h> 111 #include <machine/kcore.h> 112 #ifdef SYSVMSG 113 #include <sys/msg.h> 114 #endif 115 #ifdef SYSVSEM 116 #include <sys/sem.h> 117 #endif 118 #ifdef SYSVSHM 119 #include <sys/shm.h> 120 #endif 121 122 #include <sys/mount.h> 123 #include <sys/syscallargs.h> 124 125 #include <vm/vm_kern.h> 126 127 #if defined(UVM) 128 #include <uvm/uvm_extern.h> 129 #endif 130 131 #include <dev/cons.h> 132 133 #include <machine/autoconf.h> 134 #include <machine/cpu.h> 135 #include <machine/reg.h> 136 #include <machine/rpb.h> 137 #include <machine/prom.h> 138 #include <machine/conf.h> 139 140 #include <net/netisr.h> 141 #include <net/if.h> 142 143 #ifdef INET 144 #include <net/route.h> 145 #include <netinet/in.h> 146 #include <netinet/ip_var.h> 147 #include "arp.h" 148 #if NARP > 0 149 #include <netinet/if_inarp.h> 150 #endif 151 #endif 152 #ifdef NS 153 #include <netns/ns_var.h> 154 #endif 155 #ifdef ISO 156 #include <netiso/iso.h> 157 #include <netiso/clnp.h> 158 #endif 159 #ifdef CCITT 160 #include <netccitt/x25.h> 161 #include <netccitt/pk.h> 162 #include <netccitt/pk_extern.h> 163 #endif 164 #ifdef NATM 165 #include <netnatm/natm.h> 166 #endif 167 #ifdef NETATALK 168 #include <netatalk/at_extern.h> 169 #endif 170 #include "ppp.h" 171 #if NPPP > 0 172 #include <net/ppp_defs.h> 173 #include <net/if_ppp.h> 174 #endif 175 176 #ifdef DDB 177 #include <machine/db_machdep.h> 178 #include <ddb/db_access.h> 179 #include <ddb/db_sym.h> 180 #include <ddb/db_extern.h> 181 #include <ddb/db_interface.h> 182 #endif 183 184 #if defined(UVM) 185 vm_map_t exec_map = NULL; 186 vm_map_t mb_map = NULL; 187 vm_map_t phys_map = NULL; 188 #else 189 vm_map_t buffer_map; 190 #endif 191 192 /* 193 * Declare these as initialized data so we can patch them. 194 */ 195 int nswbuf = 0; 196 #ifdef NBUF 197 int nbuf = NBUF; 198 #else 199 int nbuf = 0; 200 #endif 201 #ifdef BUFPAGES 202 int bufpages = BUFPAGES; 203 #else 204 int bufpages = 0; 205 #endif 206 caddr_t msgbufaddr; 207 208 int maxmem; /* max memory per process */ 209 210 int totalphysmem; /* total amount of physical memory in system */ 211 int physmem; /* physical memory used by NetBSD + some rsvd */ 212 int resvmem; /* amount of memory reserved for PROM */ 213 int unusedmem; /* amount of memory for OS that we don't use */ 214 int unknownmem; /* amount of memory with an unknown use */ 215 216 int cputype; /* system type, from the RPB */ 217 218 /* 219 * XXX We need an address to which we can assign things so that they 220 * won't be optimized away because we didn't use the value. 221 */ 222 u_int32_t no_optimize; 223 224 /* the following is used externally (sysctl_hw) */ 225 char machine[] = MACHINE; /* from <machine/param.h> */ 226 char machine_arch[] = MACHINE_ARCH; /* from <machine/param.h> */ 227 char cpu_model[128]; 228 229 struct user *proc0paddr; 230 231 /* Number of machine cycles per microsecond */ 232 u_int64_t cycles_per_usec; 233 234 /* number of cpus in the box. really! */ 235 int ncpus; 236 237 /* machine check info array, valloc()'ed in allocsys() */ 238 239 static struct mchkinfo startup_info, 240 *mchkinfo_all_cpus; 241 242 struct bootinfo_kernel bootinfo; 243 244 /* For built-in TCDS */ 245 #if defined(DEC_3000_300) || defined(DEC_3000_500) 246 u_int8_t dec_3000_scsiid[2], dec_3000_scsifast[2]; 247 #endif 248 249 struct platform platform; 250 251 u_int32_t vm_mbuf_size = _VM_MBUF_SIZE; 252 u_int32_t vm_kmem_size = _VM_KMEM_SIZE; 253 u_int32_t vm_phys_size = _VM_PHYS_SIZE; 254 255 #ifdef DDB 256 /* start and end of kernel symbol table */ 257 void *ksym_start, *ksym_end; 258 #endif 259 260 /* for cpu_sysctl() */ 261 int alpha_unaligned_print = 1; /* warn about unaligned accesses */ 262 int alpha_unaligned_fix = 1; /* fix up unaligned accesses */ 263 int alpha_unaligned_sigbus = 0; /* don't SIGBUS on fixed-up accesses */ 264 265 /* 266 * XXX This should be dynamically sized, but we have the chicken-egg problem! 267 * XXX it should also be larger than it is, because not all of the mddt 268 * XXX clusters end up being used for VM. 269 */ 270 phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX]; /* low size bits overloaded */ 271 int mem_cluster_cnt; 272 273 caddr_t allocsys __P((caddr_t)); 274 int cpu_dump __P((void)); 275 int cpu_dumpsize __P((void)); 276 u_long cpu_dump_mempagecnt __P((void)); 277 void dumpsys __P((void)); 278 void identifycpu __P((void)); 279 void netintr __P((void)); 280 void printregs __P((struct reg *)); 281 282 void 283 alpha_init(pfn, ptb, bim, bip, biv) 284 u_long pfn; /* first free PFN number */ 285 u_long ptb; /* PFN of current level 1 page table */ 286 u_long bim; /* bootinfo magic */ 287 u_long bip; /* bootinfo pointer */ 288 u_long biv; /* bootinfo version */ 289 { 290 extern char kernel_text[], _end[]; 291 struct mddt *mddtp; 292 struct mddt_cluster *memc; 293 int i, mddtweird; 294 struct vm_physseg *vps; 295 vm_offset_t kernstart, kernend; 296 vm_offset_t kernstartpfn, kernendpfn, pfn0, pfn1; 297 vm_size_t size; 298 char *p; 299 caddr_t v; 300 char *bootinfo_msg; 301 302 /* NO OUTPUT ALLOWED UNTIL FURTHER NOTICE */ 303 304 /* 305 * Turn off interrupts (not mchecks) and floating point. 306 * Make sure the instruction and data streams are consistent. 307 */ 308 (void)alpha_pal_swpipl(ALPHA_PSL_IPL_HIGH); 309 alpha_pal_wrfen(0); 310 ALPHA_TBIA(); 311 alpha_pal_imb(); 312 313 /* 314 * Get critical system information (if possible, from the 315 * information provided by the boot program). 316 */ 317 bootinfo_msg = NULL; 318 if (bim == BOOTINFO_MAGIC) { 319 if (biv == 0) { /* backward compat */ 320 biv = *(u_long *)bip; 321 bip += 8; 322 } 323 switch (biv) { 324 case 1: { 325 struct bootinfo_v1 *v1p = (struct bootinfo_v1 *)bip; 326 327 bootinfo.ssym = v1p->ssym; 328 bootinfo.esym = v1p->esym; 329 /* hwrpb may not be provided by boot block in v1 */ 330 if (v1p->hwrpb != NULL) { 331 bootinfo.hwrpb_phys = 332 ((struct rpb *)v1p->hwrpb)->rpb_phys; 333 bootinfo.hwrpb_size = v1p->hwrpbsize; 334 } else { 335 bootinfo.hwrpb_phys = 336 ((struct rpb *)HWRPB_ADDR)->rpb_phys; 337 bootinfo.hwrpb_size = 338 ((struct rpb *)HWRPB_ADDR)->rpb_size; 339 } 340 bcopy(v1p->boot_flags, bootinfo.boot_flags, 341 min(sizeof v1p->boot_flags, 342 sizeof bootinfo.boot_flags)); 343 bcopy(v1p->booted_kernel, bootinfo.booted_kernel, 344 min(sizeof v1p->booted_kernel, 345 sizeof bootinfo.booted_kernel)); 346 /* booted dev not provided in bootinfo */ 347 init_prom_interface((struct rpb *) 348 ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys)); 349 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 350 sizeof bootinfo.booted_dev); 351 break; 352 } 353 default: 354 bootinfo_msg = "unknown bootinfo version"; 355 goto nobootinfo; 356 } 357 } else { 358 bootinfo_msg = "boot program did not pass bootinfo"; 359 nobootinfo: 360 bootinfo.ssym = (u_long)_end; 361 bootinfo.esym = (u_long)_end; 362 bootinfo.hwrpb_phys = ((struct rpb *)HWRPB_ADDR)->rpb_phys; 363 bootinfo.hwrpb_size = ((struct rpb *)HWRPB_ADDR)->rpb_size; 364 init_prom_interface((struct rpb *)HWRPB_ADDR); 365 prom_getenv(PROM_E_BOOTED_OSFLAGS, bootinfo.boot_flags, 366 sizeof bootinfo.boot_flags); 367 prom_getenv(PROM_E_BOOTED_FILE, bootinfo.booted_kernel, 368 sizeof bootinfo.booted_kernel); 369 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 370 sizeof bootinfo.booted_dev); 371 } 372 373 /* 374 * Initialize the kernel's mapping of the RPB. It's needed for 375 * lots of things. 376 */ 377 hwrpb = (struct rpb *)ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys); 378 379 #if defined(DEC_3000_300) || defined(DEC_3000_500) 380 if (hwrpb->rpb_type == ST_DEC_3000_300 || 381 hwrpb->rpb_type == ST_DEC_3000_500) { 382 prom_getenv(PROM_E_SCSIID, dec_3000_scsiid, 383 sizeof(dec_3000_scsiid)); 384 prom_getenv(PROM_E_SCSIFAST, dec_3000_scsifast, 385 sizeof(dec_3000_scsifast)); 386 } 387 #endif 388 389 /* 390 * Remember how many cycles there are per microsecond, 391 * so that we can use delay(). Round up, for safety. 392 */ 393 cycles_per_usec = (hwrpb->rpb_cc_freq + 999999) / 1000000; 394 395 /* 396 * Initalize the (temporary) bootstrap console interface, so 397 * we can use printf until the VM system starts being setup. 398 * The real console is initialized before then. 399 */ 400 init_bootstrap_console(); 401 402 /* OUTPUT NOW ALLOWED */ 403 404 /* delayed from above */ 405 if (bootinfo_msg) 406 printf("WARNING: %s (0x%lx, 0x%lx, 0x%lx)\n", 407 bootinfo_msg, bim, bip, biv); 408 409 /* 410 * Point interrupt/exception vectors to our own. 411 */ 412 alpha_pal_wrent(XentInt, ALPHA_KENTRY_INT); 413 alpha_pal_wrent(XentArith, ALPHA_KENTRY_ARITH); 414 alpha_pal_wrent(XentMM, ALPHA_KENTRY_MM); 415 alpha_pal_wrent(XentIF, ALPHA_KENTRY_IF); 416 alpha_pal_wrent(XentUna, ALPHA_KENTRY_UNA); 417 alpha_pal_wrent(XentSys, ALPHA_KENTRY_SYS); 418 419 /* 420 * Clear pending machine checks and error reports, and enable 421 * system- and processor-correctable error reporting. 422 */ 423 alpha_pal_wrmces(alpha_pal_rdmces() & 424 ~(ALPHA_MCES_DSC|ALPHA_MCES_DPC)); 425 426 /* 427 * Find out what hardware we're on, and do basic initialization. 428 */ 429 cputype = hwrpb->rpb_type; 430 if (cputype >= ncpuinit) { 431 platform_not_supported(); 432 /* NOTREACHED */ 433 } 434 (*cpuinit[cputype].init)(); 435 strcpy(cpu_model, platform.model); 436 437 /* 438 * Initalize the real console, so the the bootstrap console is 439 * no longer necessary. 440 */ 441 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 442 if (!pmap_uses_prom_console()) 443 #endif 444 (*platform.cons_init)(); 445 446 #ifdef DIAGNOSTIC 447 /* Paranoid sanity checking */ 448 449 /* We should always be running on the the primary. */ 450 assert(hwrpb->rpb_primary_cpu_id == alpha_pal_whami()); 451 452 /* 453 * On single-CPU systypes, the primary should always be CPU 0, 454 * except on Alpha 8200 systems where the CPU id is related 455 * to the VID, which is related to the Turbo Laser node id. 456 */ 457 if (cputype != ST_DEC_21000) 458 assert(hwrpb->rpb_primary_cpu_id == 0); 459 #endif 460 461 /* NO MORE FIRMWARE ACCESS ALLOWED */ 462 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 463 /* 464 * XXX (unless _PMAP_MAY_USE_PROM_CONSOLE is defined and 465 * XXX pmap_uses_prom_console() evaluates to non-zero.) 466 */ 467 #endif 468 469 /* 470 * find out this system's page size 471 */ 472 PAGE_SIZE = hwrpb->rpb_page_size; 473 if (PAGE_SIZE != 8192) 474 panic("page size %d != 8192?!", PAGE_SIZE); 475 476 /* 477 * Initialize PAGE_SIZE-dependent variables. 478 */ 479 #if defined(UVM) 480 uvm_setpagesize(); 481 #else 482 vm_set_page_size(); 483 #endif 484 485 /* 486 * Find the beginning and end of the kernel (and leave a 487 * bit of space before the beginning for the bootstrap 488 * stack). 489 */ 490 kernstart = trunc_page(kernel_text) - 2 * PAGE_SIZE; 491 #ifdef DDB 492 ksym_start = (void *)bootinfo.ssym; 493 ksym_end = (void *)bootinfo.esym; 494 kernend = (vm_offset_t)round_page(ksym_end); 495 #else 496 kernend = (vm_offset_t)round_page(_end); 497 #endif 498 499 kernstartpfn = atop(ALPHA_K0SEG_TO_PHYS(kernstart)); 500 kernendpfn = atop(ALPHA_K0SEG_TO_PHYS(kernend)); 501 502 /* 503 * Find out how much memory is available, by looking at 504 * the memory cluster descriptors. This also tries to do 505 * its best to detect things things that have never been seen 506 * before... 507 */ 508 mddtp = (struct mddt *)(((caddr_t)hwrpb) + hwrpb->rpb_memdat_off); 509 510 /* MDDT SANITY CHECKING */ 511 mddtweird = 0; 512 if (mddtp->mddt_cluster_cnt < 2) { 513 mddtweird = 1; 514 printf("WARNING: weird number of mem clusters: %d\n", 515 mddtp->mddt_cluster_cnt); 516 } 517 518 #if 0 519 printf("Memory cluster count: %d\n", mddtp->mddt_cluster_cnt); 520 #endif 521 522 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 523 memc = &mddtp->mddt_clusters[i]; 524 #if 0 525 printf("MEMC %d: pfn 0x%lx cnt 0x%lx usage 0x%lx\n", i, 526 memc->mddt_pfn, memc->mddt_pg_cnt, memc->mddt_usage); 527 #endif 528 totalphysmem += memc->mddt_pg_cnt; 529 if (mem_cluster_cnt < VM_PHYSSEG_MAX) { /* XXX */ 530 mem_clusters[mem_cluster_cnt].start = 531 ptoa(memc->mddt_pfn); 532 mem_clusters[mem_cluster_cnt].size = 533 ptoa(memc->mddt_pg_cnt); 534 if (memc->mddt_usage & MDDT_mbz || 535 memc->mddt_usage & MDDT_NONVOLATILE || /* XXX */ 536 memc->mddt_usage & MDDT_PALCODE) 537 mem_clusters[mem_cluster_cnt].size |= 538 PROT_READ; 539 else 540 mem_clusters[mem_cluster_cnt].size |= 541 PROT_READ | PROT_WRITE | PROT_EXEC; 542 mem_cluster_cnt++; 543 } 544 545 if (memc->mddt_usage & MDDT_mbz) { 546 mddtweird = 1; 547 printf("WARNING: mem cluster %d has weird " 548 "usage 0x%lx\n", i, memc->mddt_usage); 549 unknownmem += memc->mddt_pg_cnt; 550 continue; 551 } 552 if (memc->mddt_usage & MDDT_NONVOLATILE) { 553 /* XXX should handle these... */ 554 printf("WARNING: skipping non-volatile mem " 555 "cluster %d\n", i); 556 unusedmem += memc->mddt_pg_cnt; 557 continue; 558 } 559 if (memc->mddt_usage & MDDT_PALCODE) { 560 resvmem += memc->mddt_pg_cnt; 561 continue; 562 } 563 564 /* 565 * We have a memory cluster available for system 566 * software use. We must determine if this cluster 567 * holds the kernel. 568 */ 569 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 570 /* 571 * XXX If the kernel uses the PROM console, we only use the 572 * XXX memory after the kernel in the first system segment, 573 * XXX to avoid clobbering prom mapping, data, etc. 574 */ 575 if (!pmap_uses_prom_console() || physmem == 0) { 576 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 577 physmem += memc->mddt_pg_cnt; 578 pfn0 = memc->mddt_pfn; 579 pfn1 = memc->mddt_pfn + memc->mddt_pg_cnt; 580 if (pfn0 <= kernstartpfn && kernendpfn <= pfn1) { 581 /* 582 * Must compute the location of the kernel 583 * within the segment. 584 */ 585 #if 0 586 printf("Cluster %d contains kernel\n", i); 587 #endif 588 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 589 if (!pmap_uses_prom_console()) { 590 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 591 if (pfn0 < kernstartpfn) { 592 /* 593 * There is a chunk before the kernel. 594 */ 595 #if 0 596 printf("Loading chunk before kernel: " 597 "0x%lx / 0x%lx\n", pfn0, kernstartpfn); 598 #endif 599 #if defined(UVM) 600 uvm_page_physload(pfn0, kernstartpfn, 601 pfn0, kernstartpfn, VM_FREELIST_DEFAULT); 602 #else 603 vm_page_physload(pfn0, kernstartpfn, 604 pfn0, kernstartpfn); 605 #endif 606 } 607 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 608 } 609 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 610 if (kernendpfn < pfn1) { 611 /* 612 * There is a chunk after the kernel. 613 */ 614 #if 0 615 printf("Loading chunk after kernel: " 616 "0x%lx / 0x%lx\n", kernendpfn, pfn1); 617 #endif 618 #if defined(UVM) 619 uvm_page_physload(kernendpfn, pfn1, 620 kernendpfn, pfn1, VM_FREELIST_DEFAULT); 621 #else 622 vm_page_physload(kernendpfn, pfn1, 623 kernendpfn, pfn1); 624 #endif 625 } 626 } else { 627 /* 628 * Just load this cluster as one chunk. 629 */ 630 #if 0 631 printf("Loading cluster %d: 0x%lx / 0x%lx\n", i, 632 pfn0, pfn1); 633 #endif 634 #if defined(UVM) 635 uvm_page_physload(pfn0, pfn1, pfn0, pfn1, 636 VM_FREELIST_DEFAULT); 637 #else 638 vm_page_physload(pfn0, pfn1, pfn0, pfn1); 639 #endif 640 } 641 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 642 } 643 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 644 } 645 646 /* 647 * Dump out the MDDT if it looks odd... 648 */ 649 if (mddtweird) { 650 printf("\n"); 651 printf("complete memory cluster information:\n"); 652 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 653 printf("mddt %d:\n", i); 654 printf("\tpfn %lx\n", 655 mddtp->mddt_clusters[i].mddt_pfn); 656 printf("\tcnt %lx\n", 657 mddtp->mddt_clusters[i].mddt_pg_cnt); 658 printf("\ttest %lx\n", 659 mddtp->mddt_clusters[i].mddt_pg_test); 660 printf("\tbva %lx\n", 661 mddtp->mddt_clusters[i].mddt_v_bitaddr); 662 printf("\tbpa %lx\n", 663 mddtp->mddt_clusters[i].mddt_p_bitaddr); 664 printf("\tbcksum %lx\n", 665 mddtp->mddt_clusters[i].mddt_bit_cksum); 666 printf("\tusage %lx\n", 667 mddtp->mddt_clusters[i].mddt_usage); 668 } 669 printf("\n"); 670 } 671 672 if (totalphysmem == 0) 673 panic("can't happen: system seems to have no memory!"); 674 675 #ifdef LIMITMEM 676 /* 677 * XXX Kludge so we can run on machines with memory larger 678 * XXX than 1G until all device drivers are converted to 679 * XXX use bus_dma. (Relies on the fact that vm_physmem 680 * XXX sorted in order of increasing addresses.) 681 */ 682 if (vm_physmem[vm_nphysseg - 1].end > atop(LIMITMEM * 1024 * 1024)) { 683 684 printf("******** LIMITING MEMORY TO %dMB **********\n", 685 LIMITMEM); 686 687 do { 688 u_long ovf; 689 690 vps = &vm_physmem[vm_nphysseg - 1]; 691 692 if (vps->start >= atop(LIMITMEM * 1024 * 1024)) { 693 /* 694 * If the start is too high, just drop 695 * the whole segment. 696 * 697 * XXX can start != avail_start in this 698 * XXX case? wouldn't that mean that 699 * XXX some memory was stolen above the 700 * XXX limit? What to do? 701 */ 702 ovf = vps->end - vps->start; 703 vm_nphysseg--; 704 } else { 705 /* 706 * If the start is OK, calculate how much 707 * to drop and drop it. 708 */ 709 ovf = vps->end - atop(LIMITMEM * 1024 * 1024); 710 vps->end -= ovf; 711 vps->avail_end -= ovf; 712 } 713 physmem -= ovf; 714 unusedmem += ovf; 715 } while (vps->end > atop(LIMITMEM * 1024 * 1024)); 716 } 717 #endif /* LIMITMEM */ 718 719 maxmem = physmem; 720 721 #if 0 722 printf("totalphysmem = %d\n", totalphysmem); 723 printf("physmem = %d\n", physmem); 724 printf("resvmem = %d\n", resvmem); 725 printf("unusedmem = %d\n", unusedmem); 726 printf("unknownmem = %d\n", unknownmem); 727 #endif 728 729 /* 730 * Adjust some parameters if the amount of physmem 731 * available would cause us to croak. This is completely 732 * eyeballed and isn't meant to be the final answer. 733 * vm_phys_size is probably the only one to really worry 734 * about. 735 * 736 * It's for booting a GENERIC kernel on a large memory platform. 737 */ 738 if (physmem >= atop(128 * 1024 * 1024)) { 739 vm_mbuf_size <<= 1; 740 vm_kmem_size <<= 3; 741 vm_phys_size <<= 2; 742 } 743 744 /* 745 * Initialize error message buffer (at end of core). 746 */ 747 { 748 size_t sz = round_page(MSGBUFSIZE); 749 750 vps = &vm_physmem[vm_nphysseg - 1]; 751 752 /* shrink so that it'll fit in the last segment */ 753 if ((vps->avail_end - vps->avail_start) < atop(sz)) 754 sz = ptoa(vps->avail_end - vps->avail_start); 755 756 vps->end -= atop(sz); 757 vps->avail_end -= atop(sz); 758 msgbufaddr = (caddr_t) ALPHA_PHYS_TO_K0SEG(ptoa(vps->end)); 759 initmsgbuf(msgbufaddr, sz); 760 761 /* Remove the last segment if it now has no pages. */ 762 if (vps->start == vps->end) 763 vm_nphysseg--; 764 765 /* warn if the message buffer had to be shrunk */ 766 if (sz != round_page(MSGBUFSIZE)) 767 printf("WARNING: %d bytes not available for msgbuf in last cluster (%d used)\n", 768 round_page(MSGBUFSIZE), sz); 769 770 } 771 772 /* 773 * Init mapping for u page(s) for proc 0 774 */ 775 proc0.p_addr = proc0paddr = 776 (struct user *)pmap_steal_memory(UPAGES * PAGE_SIZE, NULL, NULL); 777 778 /* 779 * Allocate space for system data structures. These data structures 780 * are allocated here instead of cpu_startup() because physical 781 * memory is directly addressable. We don't have to map these into 782 * virtual address space. 783 */ 784 size = (vm_size_t)allocsys(0); 785 v = (caddr_t)pmap_steal_memory(size, NULL, NULL); 786 if ((allocsys(v) - v) != size) 787 panic("alpha_init: table size inconsistency"); 788 789 /* 790 * Initialize the virtual memory system, and set the 791 * page table base register in proc 0's PCB. 792 */ 793 pmap_bootstrap(ALPHA_PHYS_TO_K0SEG(ptb << PGSHIFT), 794 hwrpb->rpb_max_asn); 795 796 /* 797 * Initialize the rest of proc 0's PCB, and cache its physical 798 * address. 799 */ 800 proc0.p_md.md_pcbpaddr = 801 (struct pcb *)ALPHA_K0SEG_TO_PHYS((vm_offset_t)&proc0paddr->u_pcb); 802 803 /* 804 * Set the kernel sp, reserving space for an (empty) trapframe, 805 * and make proc0's trapframe pointer point to it for sanity. 806 */ 807 proc0paddr->u_pcb.pcb_hw.apcb_ksp = 808 (u_int64_t)proc0paddr + USPACE - sizeof(struct trapframe); 809 proc0.p_md.md_tf = 810 (struct trapframe *)proc0paddr->u_pcb.pcb_hw.apcb_ksp; 811 812 /* 813 * Look at arguments passed to us and compute boothowto. 814 */ 815 816 boothowto = RB_SINGLE; 817 #ifdef KADB 818 boothowto |= RB_KDB; 819 #endif 820 for (p = bootinfo.boot_flags; p && *p != '\0'; p++) { 821 /* 822 * Note that we'd really like to differentiate case here, 823 * but the Alpha AXP Architecture Reference Manual 824 * says that we shouldn't. 825 */ 826 switch (*p) { 827 case 'a': /* autoboot */ 828 case 'A': 829 boothowto &= ~RB_SINGLE; 830 break; 831 832 #ifdef DEBUG 833 case 'c': /* crash dump immediately after autoconfig */ 834 case 'C': 835 boothowto |= RB_DUMP; 836 break; 837 #endif 838 839 #if defined(KGDB) || defined(DDB) 840 case 'd': /* break into the kernel debugger ASAP */ 841 case 'D': 842 boothowto |= RB_KDB; 843 break; 844 #endif 845 846 case 'h': /* always halt, never reboot */ 847 case 'H': 848 boothowto |= RB_HALT; 849 break; 850 851 #if 0 852 case 'm': /* mini root present in memory */ 853 case 'M': 854 boothowto |= RB_MINIROOT; 855 break; 856 #endif 857 858 case 'n': /* askname */ 859 case 'N': 860 boothowto |= RB_ASKNAME; 861 break; 862 863 case 's': /* single-user (default, supported for sanity) */ 864 case 'S': 865 boothowto |= RB_SINGLE; 866 break; 867 868 case '-': 869 /* 870 * Just ignore this. It's not required, but it's 871 * common for it to be passed regardless. 872 */ 873 break; 874 875 default: 876 printf("Unrecognized boot flag '%c'.\n", *p); 877 break; 878 } 879 } 880 881 882 /* 883 * Figure out the number of cpus in the box, from RPB fields. 884 * Really. We mean it. 885 */ 886 for (i = 0; i < hwrpb->rpb_pcs_cnt; i++) { 887 struct pcs *pcsp; 888 889 pcsp = (struct pcs *)((char *)hwrpb + hwrpb->rpb_pcs_off + 890 (i * hwrpb->rpb_pcs_size)); 891 if ((pcsp->pcs_flags & PCS_PP) != 0) 892 ncpus++; 893 } 894 895 /* 896 * Initialize debuggers, and break into them if appropriate. 897 */ 898 #ifdef DDB 899 db_machine_init(); 900 ddb_init(ksym_start, ksym_end); 901 if (boothowto & RB_KDB) 902 Debugger(); 903 #endif 904 #ifdef KGDB 905 if (boothowto & RB_KDB) 906 kgdb_connect(0); 907 #endif 908 /* 909 * Figure out our clock frequency, from RPB fields. 910 */ 911 hz = hwrpb->rpb_intr_freq >> 12; 912 if (!(60 <= hz && hz <= 10240)) { 913 hz = 1024; 914 #ifdef DIAGNOSTIC 915 printf("WARNING: unbelievable rpb_intr_freq: %ld (%d hz)\n", 916 hwrpb->rpb_intr_freq, hz); 917 #endif 918 } 919 } 920 921 /* 922 * Allocate space for system data structures. We are given 923 * a starting virtual address and we return a final virtual 924 * address; along the way we set each data structure pointer. 925 * 926 * We call allocsys() with 0 to find out how much space we want, 927 * allocate that much and fill it with zeroes, and the call 928 * allocsys() again with the correct base virtual address. 929 */ 930 caddr_t 931 allocsys(v) 932 caddr_t v; 933 { 934 935 #define valloc(name, type, num) \ 936 (name) = (type *)v; v = (caddr_t)ALIGN((name)+(num)) 937 938 #ifdef REAL_CLISTS 939 valloc(cfree, struct cblock, nclist); 940 #endif 941 valloc(callout, struct callout, ncallout); 942 #ifdef SYSVSHM 943 valloc(shmsegs, struct shmid_ds, shminfo.shmmni); 944 #endif 945 #ifdef SYSVSEM 946 valloc(sema, struct semid_ds, seminfo.semmni); 947 valloc(sem, struct sem, seminfo.semmns); 948 /* This is pretty disgusting! */ 949 valloc(semu, int, (seminfo.semmnu * seminfo.semusz) / sizeof(int)); 950 #endif 951 #ifdef SYSVMSG 952 valloc(msgpool, char, msginfo.msgmax); 953 valloc(msgmaps, struct msgmap, msginfo.msgseg); 954 valloc(msghdrs, struct msg, msginfo.msgtql); 955 valloc(msqids, struct msqid_ds, msginfo.msgmni); 956 #endif 957 958 /* 959 * Determine how many buffers to allocate. 960 * We allocate 10% of memory for buffer space. Insure a 961 * minimum of 16 buffers. We allocate 1/2 as many swap buffer 962 * headers as file i/o buffers. 963 */ 964 if (bufpages == 0) 965 bufpages = (physmem * 10) / (CLSIZE * 100); 966 if (nbuf == 0) { 967 nbuf = bufpages; 968 if (nbuf < 16) 969 nbuf = 16; 970 } 971 if (nswbuf == 0) { 972 nswbuf = (nbuf / 2) &~ 1; /* force even */ 973 if (nswbuf > 256) 974 nswbuf = 256; /* sanity */ 975 } 976 #if !defined(UVM) 977 valloc(swbuf, struct buf, nswbuf); 978 #endif 979 valloc(buf, struct buf, nbuf); 980 981 /* 982 * There appears to be a correlation between the number 983 * of processor slots defined in the HWRPB and the whami 984 * value that can be returned. 985 */ 986 valloc(mchkinfo_all_cpus, struct mchkinfo, hwrpb->rpb_pcs_cnt); 987 988 return (v); 989 #undef valloc 990 } 991 992 void 993 consinit() 994 { 995 996 /* 997 * Everything related to console initialization is done 998 * in alpha_init(). 999 */ 1000 #if defined(DIAGNOSTIC) && defined(_PMAP_MAY_USE_PROM_CONSOLE) 1001 printf("consinit: %susing prom console\n", 1002 pmap_uses_prom_console() ? "" : "not "); 1003 #endif 1004 } 1005 1006 #include "pckbc.h" 1007 #include "pckbd.h" 1008 #if (NPCKBC > 0) && (NPCKBD == 0) 1009 1010 #include <machine/bus.h> 1011 #include <dev/isa/pckbcvar.h> 1012 1013 /* 1014 * This is called by the pbkbc driver if no pckbd is configured. 1015 * On the i386, it is used to glue in the old, deprecated console 1016 * code. On the Alpha, it does nothing. 1017 */ 1018 int 1019 pckbc_machdep_cnattach(kbctag, kbcslot) 1020 pckbc_tag_t kbctag; 1021 pckbc_slot_t kbcslot; 1022 { 1023 1024 return (ENXIO); 1025 } 1026 #endif /* NPCKBC > 0 && NPCKBD == 0 */ 1027 1028 void 1029 cpu_startup() 1030 { 1031 register unsigned i; 1032 int base, residual; 1033 vm_offset_t minaddr, maxaddr; 1034 vm_size_t size; 1035 #if defined(DEBUG) 1036 extern int pmapdebug; 1037 int opmapdebug = pmapdebug; 1038 1039 pmapdebug = 0; 1040 #endif 1041 1042 /* 1043 * Good {morning,afternoon,evening,night}. 1044 */ 1045 printf(version); 1046 identifycpu(); 1047 printf("real mem = %lu (%lu reserved for PROM, %lu used by NetBSD)\n", 1048 ((vm_offset_t) totalphysmem << (vm_offset_t) PAGE_SHIFT), 1049 ptoa(resvmem), ptoa(physmem)); 1050 if (unusedmem) 1051 printf("WARNING: unused memory = %d bytes\n", ctob(unusedmem)); 1052 if (unknownmem) 1053 printf("WARNING: %d bytes of memory with unknown purpose\n", 1054 ctob(unknownmem)); 1055 1056 /* 1057 * Allocate virtual address space for file I/O buffers. 1058 * Note they are different than the array of headers, 'buf', 1059 * and usually occupy more virtual memory than physical. 1060 */ 1061 size = MAXBSIZE * nbuf; 1062 #if defined(UVM) 1063 if (uvm_map(kernel_map, (vm_offset_t *) &buffers, round_page(size), 1064 NULL, UVM_UNKNOWN_OFFSET, 1065 UVM_MAPFLAG(UVM_PROT_NONE, UVM_PROT_NONE, UVM_INH_NONE, 1066 UVM_ADV_NORMAL, 0)) != KERN_SUCCESS) 1067 panic("startup: cannot allocate VM for buffers"); 1068 #else 1069 buffer_map = kmem_suballoc(kernel_map, (vm_offset_t *)&buffers, 1070 &maxaddr, size, TRUE); 1071 minaddr = (vm_offset_t)buffers; 1072 if (vm_map_find(buffer_map, vm_object_allocate(size), (vm_offset_t)0, 1073 &minaddr, size, FALSE) != KERN_SUCCESS) 1074 panic("startup: cannot allocate buffers"); 1075 #endif /* UVM */ 1076 base = bufpages / nbuf; 1077 residual = bufpages % nbuf; 1078 for (i = 0; i < nbuf; i++) { 1079 #if defined(UVM) 1080 vm_size_t curbufsize; 1081 vm_offset_t curbuf; 1082 struct vm_page *pg; 1083 1084 /* 1085 * Each buffer has MAXBSIZE bytes of VM space allocated. Of 1086 * that MAXBSIZE space, we allocate and map (base+1) pages 1087 * for the first "residual" buffers, and then we allocate 1088 * "base" pages for the rest. 1089 */ 1090 curbuf = (vm_offset_t) buffers + (i * MAXBSIZE); 1091 curbufsize = CLBYTES * ((i < residual) ? (base+1) : base); 1092 1093 while (curbufsize) { 1094 pg = uvm_pagealloc(NULL, 0, NULL); 1095 if (pg == NULL) 1096 panic("cpu_startup: not enough memory for " 1097 "buffer cache"); 1098 #if defined(PMAP_NEW) 1099 pmap_kenter_pgs(curbuf, &pg, 1); 1100 #else 1101 pmap_enter(kernel_map->pmap, curbuf, 1102 VM_PAGE_TO_PHYS(pg), VM_PROT_ALL, TRUE); 1103 #endif 1104 curbuf += PAGE_SIZE; 1105 curbufsize -= PAGE_SIZE; 1106 } 1107 #else /* ! UVM */ 1108 vm_size_t curbufsize; 1109 vm_offset_t curbuf; 1110 1111 /* 1112 * First <residual> buffers get (base+1) physical pages 1113 * allocated for them. The rest get (base) physical pages. 1114 * 1115 * The rest of each buffer occupies virtual space, 1116 * but has no physical memory allocated for it. 1117 */ 1118 curbuf = (vm_offset_t)buffers + i * MAXBSIZE; 1119 curbufsize = CLBYTES * (i < residual ? base+1 : base); 1120 vm_map_pageable(buffer_map, curbuf, curbuf+curbufsize, FALSE); 1121 vm_map_simplify(buffer_map, curbuf); 1122 #endif /* UVM */ 1123 } 1124 /* 1125 * Allocate a submap for exec arguments. This map effectively 1126 * limits the number of processes exec'ing at any time. 1127 */ 1128 #if defined(UVM) 1129 exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 1130 16 * NCARGS, TRUE, FALSE, NULL); 1131 #else 1132 exec_map = kmem_suballoc(kernel_map, &minaddr, &maxaddr, 1133 16 * NCARGS, TRUE); 1134 #endif 1135 1136 /* 1137 * Allocate a submap for physio 1138 */ 1139 #if defined(UVM) 1140 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 1141 VM_PHYS_SIZE, TRUE, FALSE, NULL); 1142 #else 1143 phys_map = kmem_suballoc(kernel_map, &minaddr, &maxaddr, 1144 VM_PHYS_SIZE, TRUE); 1145 #endif 1146 1147 /* 1148 * Finally, allocate mbuf cluster submap. 1149 */ 1150 #if defined(UVM) 1151 mb_map = uvm_km_suballoc(kernel_map, (vm_offset_t *)&mbutl, &maxaddr, 1152 VM_MBUF_SIZE, FALSE, FALSE, NULL); 1153 #else 1154 mb_map = kmem_suballoc(kernel_map, (vm_offset_t *)&mbutl, &maxaddr, 1155 VM_MBUF_SIZE, FALSE); 1156 #endif 1157 /* 1158 * Initialize callouts 1159 */ 1160 callfree = callout; 1161 for (i = 1; i < ncallout; i++) 1162 callout[i-1].c_next = &callout[i]; 1163 callout[i-1].c_next = NULL; 1164 1165 #if defined(DEBUG) 1166 pmapdebug = opmapdebug; 1167 #endif 1168 #if defined(UVM) 1169 printf("avail mem = %ld\n", (long)ptoa(uvmexp.free)); 1170 #else 1171 printf("avail mem = %ld\n", (long)ptoa(cnt.v_free_count)); 1172 #endif 1173 #if 0 1174 { 1175 extern u_long pmap_pages_stolen; 1176 printf("stolen memory for VM structures = %ld bytes\n", 1177 pmap_pages_stolen * PAGE_SIZE); 1178 } 1179 #endif 1180 printf("using %ld buffers containing %ld bytes of memory\n", 1181 (long)nbuf, (long)(bufpages * CLBYTES)); 1182 1183 /* 1184 * Set up buffers, so they can be used to read disk labels. 1185 */ 1186 bufinit(); 1187 1188 /* 1189 * Configure the system. 1190 */ 1191 configure(); 1192 1193 /* 1194 * Note that bootstrapping is finished, and set the HWRPB up 1195 * to do restarts. 1196 */ 1197 hwrpb_restart_setup(); 1198 } 1199 1200 /* 1201 * Retrieve the platform name from the DSR. 1202 */ 1203 const char * 1204 alpha_dsr_sysname() 1205 { 1206 struct dsrdb *dsr; 1207 const char *sysname; 1208 1209 /* 1210 * DSR does not exist on early HWRPB versions. 1211 */ 1212 if (hwrpb->rpb_version < HWRPB_DSRDB_MINVERS) 1213 return (NULL); 1214 1215 dsr = (struct dsrdb *)(((caddr_t)hwrpb) + hwrpb->rpb_dsrdb_off); 1216 sysname = (const char *)((caddr_t)dsr + (dsr->dsr_sysname_off + 1217 sizeof(u_int64_t))); 1218 return (sysname); 1219 } 1220 1221 /* 1222 * Lookup the system specified system variation in the provided table, 1223 * returning the model string on match. 1224 */ 1225 const char * 1226 alpha_variation_name(variation, avtp) 1227 u_int64_t variation; 1228 const struct alpha_variation_table *avtp; 1229 { 1230 int i; 1231 1232 for (i = 0; avtp[i].avt_model != NULL; i++) 1233 if (avtp[i].avt_variation == variation) 1234 return (avtp[i].avt_model); 1235 return (NULL); 1236 } 1237 1238 /* 1239 * Generate a default platform name based for unknown system variations. 1240 */ 1241 const char * 1242 alpha_unknown_sysname() 1243 { 1244 static char s[128]; /* safe size */ 1245 1246 sprintf(s, "%s family, unknown model variation 0x%lx", 1247 platform.family, hwrpb->rpb_variation & SV_ST_MASK); 1248 return ((const char *)s); 1249 } 1250 1251 void 1252 identifycpu() 1253 { 1254 1255 /* 1256 * print out CPU identification information. 1257 */ 1258 printf("%s, %ldMHz\n", cpu_model, 1259 hwrpb->rpb_cc_freq / 1000000); /* XXX true for 21164? */ 1260 printf("%ld byte page size, %d processor%s.\n", 1261 hwrpb->rpb_page_size, ncpus, ncpus == 1 ? "" : "s"); 1262 #if 0 1263 /* this isn't defined for any systems that we run on? */ 1264 printf("serial number 0x%lx 0x%lx\n", 1265 ((long *)hwrpb->rpb_ssn)[0], ((long *)hwrpb->rpb_ssn)[1]); 1266 1267 /* and these aren't particularly useful! */ 1268 printf("variation: 0x%lx, revision 0x%lx\n", 1269 hwrpb->rpb_variation, *(long *)hwrpb->rpb_revision); 1270 #endif 1271 } 1272 1273 int waittime = -1; 1274 struct pcb dumppcb; 1275 1276 void 1277 cpu_reboot(howto, bootstr) 1278 int howto; 1279 char *bootstr; 1280 { 1281 extern int cold; 1282 1283 /* If system is cold, just halt. */ 1284 if (cold) { 1285 howto |= RB_HALT; 1286 goto haltsys; 1287 } 1288 1289 /* If "always halt" was specified as a boot flag, obey. */ 1290 if ((boothowto & RB_HALT) != 0) 1291 howto |= RB_HALT; 1292 1293 boothowto = howto; 1294 if ((howto & RB_NOSYNC) == 0 && waittime < 0) { 1295 waittime = 0; 1296 vfs_shutdown(); 1297 /* 1298 * If we've been adjusting the clock, the todr 1299 * will be out of synch; adjust it now. 1300 */ 1301 resettodr(); 1302 } 1303 1304 /* Disable interrupts. */ 1305 splhigh(); 1306 1307 /* If rebooting and a dump is requested do it. */ 1308 #if 0 1309 if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP) 1310 #else 1311 if (howto & RB_DUMP) 1312 #endif 1313 dumpsys(); 1314 1315 haltsys: 1316 1317 /* run any shutdown hooks */ 1318 doshutdownhooks(); 1319 1320 #ifdef BOOTKEY 1321 printf("hit any key to %s...\n", howto & RB_HALT ? "halt" : "reboot"); 1322 cnpollc(1); /* for proper keyboard command handling */ 1323 cngetc(); 1324 cnpollc(0); 1325 printf("\n"); 1326 #endif 1327 1328 /* Finally, powerdown/halt/reboot the system. */ 1329 if ((howto && RB_POWERDOWN) == RB_POWERDOWN && 1330 platform.powerdown != NULL) { 1331 (*platform.powerdown)(); 1332 printf("WARNING: powerdown failed!\n"); 1333 } 1334 printf("%s\n\n", howto & RB_HALT ? "halted." : "rebooting..."); 1335 prom_halt(howto & RB_HALT); 1336 /*NOTREACHED*/ 1337 } 1338 1339 /* 1340 * These variables are needed by /sbin/savecore 1341 */ 1342 u_long dumpmag = 0x8fca0101; /* magic number */ 1343 int dumpsize = 0; /* pages */ 1344 long dumplo = 0; /* blocks */ 1345 1346 /* 1347 * cpu_dumpsize: calculate size of machine-dependent kernel core dump headers. 1348 */ 1349 int 1350 cpu_dumpsize() 1351 { 1352 int size; 1353 1354 size = ALIGN(sizeof(kcore_seg_t)) + ALIGN(sizeof(cpu_kcore_hdr_t)) + 1355 ALIGN(mem_cluster_cnt * sizeof(phys_ram_seg_t)); 1356 if (roundup(size, dbtob(1)) != dbtob(1)) 1357 return -1; 1358 1359 return (1); 1360 } 1361 1362 /* 1363 * cpu_dump_mempagecnt: calculate size of RAM (in pages) to be dumped. 1364 */ 1365 u_long 1366 cpu_dump_mempagecnt() 1367 { 1368 u_long i, n; 1369 1370 n = 0; 1371 for (i = 0; i < mem_cluster_cnt; i++) 1372 n += atop(mem_clusters[i].size); 1373 return (n); 1374 } 1375 1376 /* 1377 * cpu_dump: dump machine-dependent kernel core dump headers. 1378 */ 1379 int 1380 cpu_dump() 1381 { 1382 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1383 char buf[dbtob(1)]; 1384 kcore_seg_t *segp; 1385 cpu_kcore_hdr_t *cpuhdrp; 1386 phys_ram_seg_t *memsegp; 1387 int i; 1388 1389 dump = bdevsw[major(dumpdev)].d_dump; 1390 1391 bzero(buf, sizeof buf); 1392 segp = (kcore_seg_t *)buf; 1393 cpuhdrp = (cpu_kcore_hdr_t *)&buf[ALIGN(sizeof(*segp))]; 1394 memsegp = (phys_ram_seg_t *)&buf[ ALIGN(sizeof(*segp)) + 1395 ALIGN(sizeof(*cpuhdrp))]; 1396 1397 /* 1398 * Generate a segment header. 1399 */ 1400 CORE_SETMAGIC(*segp, KCORE_MAGIC, MID_MACHINE, CORE_CPU); 1401 segp->c_size = dbtob(1) - ALIGN(sizeof(*segp)); 1402 1403 /* 1404 * Add the machine-dependent header info. 1405 */ 1406 cpuhdrp->lev1map_pa = ALPHA_K0SEG_TO_PHYS((vm_offset_t)kernel_lev1map); 1407 cpuhdrp->page_size = PAGE_SIZE; 1408 cpuhdrp->nmemsegs = mem_cluster_cnt; 1409 1410 /* 1411 * Fill in the memory segment descriptors. 1412 */ 1413 for (i = 0; i < mem_cluster_cnt; i++) { 1414 memsegp[i].start = mem_clusters[i].start; 1415 memsegp[i].size = mem_clusters[i].size & ~PAGE_MASK; 1416 } 1417 1418 return (dump(dumpdev, dumplo, (caddr_t)buf, dbtob(1))); 1419 } 1420 1421 /* 1422 * This is called by main to set dumplo and dumpsize. 1423 * Dumps always skip the first CLBYTES of disk space 1424 * in case there might be a disk label stored there. 1425 * If there is extra space, put dump at the end to 1426 * reduce the chance that swapping trashes it. 1427 */ 1428 void 1429 cpu_dumpconf() 1430 { 1431 int nblks, dumpblks; /* size of dump area */ 1432 int maj; 1433 1434 if (dumpdev == NODEV) 1435 goto bad; 1436 maj = major(dumpdev); 1437 if (maj < 0 || maj >= nblkdev) 1438 panic("dumpconf: bad dumpdev=0x%x", dumpdev); 1439 if (bdevsw[maj].d_psize == NULL) 1440 goto bad; 1441 nblks = (*bdevsw[maj].d_psize)(dumpdev); 1442 if (nblks <= ctod(1)) 1443 goto bad; 1444 1445 dumpblks = cpu_dumpsize(); 1446 if (dumpblks < 0) 1447 goto bad; 1448 dumpblks += ctod(cpu_dump_mempagecnt()); 1449 1450 /* If dump won't fit (incl. room for possible label), punt. */ 1451 if (dumpblks > (nblks - ctod(1))) 1452 goto bad; 1453 1454 /* Put dump at end of partition */ 1455 dumplo = nblks - dumpblks; 1456 1457 /* dumpsize is in page units, and doesn't include headers. */ 1458 dumpsize = cpu_dump_mempagecnt(); 1459 return; 1460 1461 bad: 1462 dumpsize = 0; 1463 return; 1464 } 1465 1466 /* 1467 * Dump the kernel's image to the swap partition. 1468 */ 1469 #define BYTES_PER_DUMP NBPG 1470 1471 void 1472 dumpsys() 1473 { 1474 u_long totalbytesleft, bytes, i, n, memcl; 1475 u_long maddr; 1476 int psize; 1477 daddr_t blkno; 1478 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1479 int error; 1480 1481 /* Save registers. */ 1482 savectx(&dumppcb); 1483 1484 msgbufenabled = 0; /* don't record dump msgs in msgbuf */ 1485 if (dumpdev == NODEV) 1486 return; 1487 1488 /* 1489 * For dumps during autoconfiguration, 1490 * if dump device has already configured... 1491 */ 1492 if (dumpsize == 0) 1493 cpu_dumpconf(); 1494 if (dumplo <= 0) { 1495 printf("\ndump to dev %u,%u not possible\n", major(dumpdev), 1496 minor(dumpdev)); 1497 return; 1498 } 1499 printf("\ndumping to dev %u,%u offset %ld\n", major(dumpdev), 1500 minor(dumpdev), dumplo); 1501 1502 psize = (*bdevsw[major(dumpdev)].d_psize)(dumpdev); 1503 printf("dump "); 1504 if (psize == -1) { 1505 printf("area unavailable\n"); 1506 return; 1507 } 1508 1509 /* XXX should purge all outstanding keystrokes. */ 1510 1511 if ((error = cpu_dump()) != 0) 1512 goto err; 1513 1514 totalbytesleft = ptoa(cpu_dump_mempagecnt()); 1515 blkno = dumplo + cpu_dumpsize(); 1516 dump = bdevsw[major(dumpdev)].d_dump; 1517 error = 0; 1518 1519 for (memcl = 0; memcl < mem_cluster_cnt; memcl++) { 1520 maddr = mem_clusters[memcl].start; 1521 bytes = mem_clusters[memcl].size & ~PAGE_MASK; 1522 1523 for (i = 0; i < bytes; i += n, totalbytesleft -= n) { 1524 1525 /* Print out how many MBs we to go. */ 1526 if ((totalbytesleft % (1024*1024)) == 0) 1527 printf("%d ", totalbytesleft / (1024 * 1024)); 1528 1529 /* Limit size for next transfer. */ 1530 n = bytes - i; 1531 if (n > BYTES_PER_DUMP) 1532 n = BYTES_PER_DUMP; 1533 1534 error = (*dump)(dumpdev, blkno, 1535 (caddr_t)ALPHA_PHYS_TO_K0SEG(maddr), n); 1536 if (error) 1537 goto err; 1538 maddr += n; 1539 blkno += btodb(n); /* XXX? */ 1540 1541 /* XXX should look for keystrokes, to cancel. */ 1542 } 1543 } 1544 1545 err: 1546 switch (error) { 1547 1548 case ENXIO: 1549 printf("device bad\n"); 1550 break; 1551 1552 case EFAULT: 1553 printf("device not ready\n"); 1554 break; 1555 1556 case EINVAL: 1557 printf("area improper\n"); 1558 break; 1559 1560 case EIO: 1561 printf("i/o error\n"); 1562 break; 1563 1564 case EINTR: 1565 printf("aborted from console\n"); 1566 break; 1567 1568 case 0: 1569 printf("succeeded\n"); 1570 break; 1571 1572 default: 1573 printf("error %d\n", error); 1574 break; 1575 } 1576 printf("\n\n"); 1577 delay(1000); 1578 } 1579 1580 void 1581 frametoreg(framep, regp) 1582 struct trapframe *framep; 1583 struct reg *regp; 1584 { 1585 1586 regp->r_regs[R_V0] = framep->tf_regs[FRAME_V0]; 1587 regp->r_regs[R_T0] = framep->tf_regs[FRAME_T0]; 1588 regp->r_regs[R_T1] = framep->tf_regs[FRAME_T1]; 1589 regp->r_regs[R_T2] = framep->tf_regs[FRAME_T2]; 1590 regp->r_regs[R_T3] = framep->tf_regs[FRAME_T3]; 1591 regp->r_regs[R_T4] = framep->tf_regs[FRAME_T4]; 1592 regp->r_regs[R_T5] = framep->tf_regs[FRAME_T5]; 1593 regp->r_regs[R_T6] = framep->tf_regs[FRAME_T6]; 1594 regp->r_regs[R_T7] = framep->tf_regs[FRAME_T7]; 1595 regp->r_regs[R_S0] = framep->tf_regs[FRAME_S0]; 1596 regp->r_regs[R_S1] = framep->tf_regs[FRAME_S1]; 1597 regp->r_regs[R_S2] = framep->tf_regs[FRAME_S2]; 1598 regp->r_regs[R_S3] = framep->tf_regs[FRAME_S3]; 1599 regp->r_regs[R_S4] = framep->tf_regs[FRAME_S4]; 1600 regp->r_regs[R_S5] = framep->tf_regs[FRAME_S5]; 1601 regp->r_regs[R_S6] = framep->tf_regs[FRAME_S6]; 1602 regp->r_regs[R_A0] = framep->tf_regs[FRAME_A0]; 1603 regp->r_regs[R_A1] = framep->tf_regs[FRAME_A1]; 1604 regp->r_regs[R_A2] = framep->tf_regs[FRAME_A2]; 1605 regp->r_regs[R_A3] = framep->tf_regs[FRAME_A3]; 1606 regp->r_regs[R_A4] = framep->tf_regs[FRAME_A4]; 1607 regp->r_regs[R_A5] = framep->tf_regs[FRAME_A5]; 1608 regp->r_regs[R_T8] = framep->tf_regs[FRAME_T8]; 1609 regp->r_regs[R_T9] = framep->tf_regs[FRAME_T9]; 1610 regp->r_regs[R_T10] = framep->tf_regs[FRAME_T10]; 1611 regp->r_regs[R_T11] = framep->tf_regs[FRAME_T11]; 1612 regp->r_regs[R_RA] = framep->tf_regs[FRAME_RA]; 1613 regp->r_regs[R_T12] = framep->tf_regs[FRAME_T12]; 1614 regp->r_regs[R_AT] = framep->tf_regs[FRAME_AT]; 1615 regp->r_regs[R_GP] = framep->tf_regs[FRAME_GP]; 1616 /* regp->r_regs[R_SP] = framep->tf_regs[FRAME_SP]; XXX */ 1617 regp->r_regs[R_ZERO] = 0; 1618 } 1619 1620 void 1621 regtoframe(regp, framep) 1622 struct reg *regp; 1623 struct trapframe *framep; 1624 { 1625 1626 framep->tf_regs[FRAME_V0] = regp->r_regs[R_V0]; 1627 framep->tf_regs[FRAME_T0] = regp->r_regs[R_T0]; 1628 framep->tf_regs[FRAME_T1] = regp->r_regs[R_T1]; 1629 framep->tf_regs[FRAME_T2] = regp->r_regs[R_T2]; 1630 framep->tf_regs[FRAME_T3] = regp->r_regs[R_T3]; 1631 framep->tf_regs[FRAME_T4] = regp->r_regs[R_T4]; 1632 framep->tf_regs[FRAME_T5] = regp->r_regs[R_T5]; 1633 framep->tf_regs[FRAME_T6] = regp->r_regs[R_T6]; 1634 framep->tf_regs[FRAME_T7] = regp->r_regs[R_T7]; 1635 framep->tf_regs[FRAME_S0] = regp->r_regs[R_S0]; 1636 framep->tf_regs[FRAME_S1] = regp->r_regs[R_S1]; 1637 framep->tf_regs[FRAME_S2] = regp->r_regs[R_S2]; 1638 framep->tf_regs[FRAME_S3] = regp->r_regs[R_S3]; 1639 framep->tf_regs[FRAME_S4] = regp->r_regs[R_S4]; 1640 framep->tf_regs[FRAME_S5] = regp->r_regs[R_S5]; 1641 framep->tf_regs[FRAME_S6] = regp->r_regs[R_S6]; 1642 framep->tf_regs[FRAME_A0] = regp->r_regs[R_A0]; 1643 framep->tf_regs[FRAME_A1] = regp->r_regs[R_A1]; 1644 framep->tf_regs[FRAME_A2] = regp->r_regs[R_A2]; 1645 framep->tf_regs[FRAME_A3] = regp->r_regs[R_A3]; 1646 framep->tf_regs[FRAME_A4] = regp->r_regs[R_A4]; 1647 framep->tf_regs[FRAME_A5] = regp->r_regs[R_A5]; 1648 framep->tf_regs[FRAME_T8] = regp->r_regs[R_T8]; 1649 framep->tf_regs[FRAME_T9] = regp->r_regs[R_T9]; 1650 framep->tf_regs[FRAME_T10] = regp->r_regs[R_T10]; 1651 framep->tf_regs[FRAME_T11] = regp->r_regs[R_T11]; 1652 framep->tf_regs[FRAME_RA] = regp->r_regs[R_RA]; 1653 framep->tf_regs[FRAME_T12] = regp->r_regs[R_T12]; 1654 framep->tf_regs[FRAME_AT] = regp->r_regs[R_AT]; 1655 framep->tf_regs[FRAME_GP] = regp->r_regs[R_GP]; 1656 /* framep->tf_regs[FRAME_SP] = regp->r_regs[R_SP]; XXX */ 1657 /* ??? = regp->r_regs[R_ZERO]; */ 1658 } 1659 1660 void 1661 printregs(regp) 1662 struct reg *regp; 1663 { 1664 int i; 1665 1666 for (i = 0; i < 32; i++) 1667 printf("R%d:\t0x%016lx%s", i, regp->r_regs[i], 1668 i & 1 ? "\n" : "\t"); 1669 } 1670 1671 void 1672 regdump(framep) 1673 struct trapframe *framep; 1674 { 1675 struct reg reg; 1676 1677 frametoreg(framep, ®); 1678 reg.r_regs[R_SP] = alpha_pal_rdusp(); 1679 1680 printf("REGISTERS:\n"); 1681 printregs(®); 1682 } 1683 1684 #ifdef DEBUG 1685 int sigdebug = 0; 1686 int sigpid = 0; 1687 #define SDB_FOLLOW 0x01 1688 #define SDB_KSTACK 0x02 1689 #endif 1690 1691 /* 1692 * Send an interrupt to process. 1693 */ 1694 void 1695 sendsig(catcher, sig, mask, code) 1696 sig_t catcher; 1697 int sig, mask; 1698 u_long code; 1699 { 1700 struct proc *p = curproc; 1701 struct sigcontext *scp, ksc; 1702 struct trapframe *frame; 1703 struct sigacts *psp = p->p_sigacts; 1704 int oonstack, fsize, rndfsize; 1705 extern char sigcode[], esigcode[]; 1706 extern struct proc *fpcurproc; 1707 1708 frame = p->p_md.md_tf; 1709 oonstack = psp->ps_sigstk.ss_flags & SS_ONSTACK; 1710 fsize = sizeof ksc; 1711 rndfsize = ((fsize + 15) / 16) * 16; 1712 /* 1713 * Allocate and validate space for the signal handler 1714 * context. Note that if the stack is in P0 space, the 1715 * call to grow() is a nop, and the useracc() check 1716 * will fail if the process has not already allocated 1717 * the space with a `brk'. 1718 */ 1719 if ((psp->ps_flags & SAS_ALTSTACK) && !oonstack && 1720 (psp->ps_sigonstack & sigmask(sig))) { 1721 scp = (struct sigcontext *)((caddr_t)psp->ps_sigstk.ss_sp + 1722 psp->ps_sigstk.ss_size - rndfsize); 1723 psp->ps_sigstk.ss_flags |= SS_ONSTACK; 1724 } else 1725 scp = (struct sigcontext *)(alpha_pal_rdusp() - rndfsize); 1726 if ((u_long)scp <= USRSTACK - ctob(p->p_vmspace->vm_ssize)) 1727 #if defined(UVM) 1728 (void)uvm_grow(p, (u_long)scp); 1729 #else 1730 (void)grow(p, (u_long)scp); 1731 #endif 1732 #ifdef DEBUG 1733 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1734 printf("sendsig(%d): sig %d ssp %p usp %p\n", p->p_pid, 1735 sig, &oonstack, scp); 1736 #endif 1737 #if defined(UVM) 1738 if (uvm_useracc((caddr_t)scp, fsize, B_WRITE) == 0) { 1739 #else 1740 if (useracc((caddr_t)scp, fsize, B_WRITE) == 0) { 1741 #endif 1742 #ifdef DEBUG 1743 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1744 printf("sendsig(%d): useracc failed on sig %d\n", 1745 p->p_pid, sig); 1746 #endif 1747 /* 1748 * Process has trashed its stack; give it an illegal 1749 * instruction to halt it in its tracks. 1750 */ 1751 SIGACTION(p, SIGILL) = SIG_DFL; 1752 sig = sigmask(SIGILL); 1753 p->p_sigignore &= ~sig; 1754 p->p_sigcatch &= ~sig; 1755 p->p_sigmask &= ~sig; 1756 psignal(p, SIGILL); 1757 return; 1758 #if !defined(UVM) /* this construct will balance braces for ctags(1) */ 1759 } 1760 #else 1761 } 1762 #endif 1763 1764 /* 1765 * Build the signal context to be used by sigreturn. 1766 */ 1767 ksc.sc_onstack = oonstack; 1768 ksc.sc_mask = mask; 1769 ksc.sc_pc = frame->tf_regs[FRAME_PC]; 1770 ksc.sc_ps = frame->tf_regs[FRAME_PS]; 1771 1772 /* copy the registers. */ 1773 frametoreg(frame, (struct reg *)ksc.sc_regs); 1774 ksc.sc_regs[R_ZERO] = 0xACEDBADE; /* magic number */ 1775 ksc.sc_regs[R_SP] = alpha_pal_rdusp(); 1776 1777 /* save the floating-point state, if necessary, then copy it. */ 1778 if (p == fpcurproc) { 1779 alpha_pal_wrfen(1); 1780 savefpstate(&p->p_addr->u_pcb.pcb_fp); 1781 alpha_pal_wrfen(0); 1782 fpcurproc = NULL; 1783 } 1784 ksc.sc_ownedfp = p->p_md.md_flags & MDP_FPUSED; 1785 bcopy(&p->p_addr->u_pcb.pcb_fp, (struct fpreg *)ksc.sc_fpregs, 1786 sizeof(struct fpreg)); 1787 ksc.sc_fp_control = 0; /* XXX ? */ 1788 bzero(ksc.sc_reserved, sizeof ksc.sc_reserved); /* XXX */ 1789 bzero(ksc.sc_xxx, sizeof ksc.sc_xxx); /* XXX */ 1790 1791 1792 #ifdef COMPAT_OSF1 1793 /* 1794 * XXX Create an OSF/1-style sigcontext and associated goo. 1795 */ 1796 #endif 1797 1798 /* 1799 * copy the frame out to userland. 1800 */ 1801 (void) copyout((caddr_t)&ksc, (caddr_t)scp, fsize); 1802 #ifdef DEBUG 1803 if (sigdebug & SDB_FOLLOW) 1804 printf("sendsig(%d): sig %d scp %p code %lx\n", p->p_pid, sig, 1805 scp, code); 1806 #endif 1807 1808 /* 1809 * Set up the registers to return to sigcode. 1810 */ 1811 frame->tf_regs[FRAME_PC] = 1812 (u_int64_t)PS_STRINGS - (esigcode - sigcode); 1813 frame->tf_regs[FRAME_A0] = sig; 1814 frame->tf_regs[FRAME_A1] = code; 1815 frame->tf_regs[FRAME_A2] = (u_int64_t)scp; 1816 frame->tf_regs[FRAME_T12] = (u_int64_t)catcher; /* t12 is pv */ 1817 alpha_pal_wrusp((unsigned long)scp); 1818 1819 #ifdef DEBUG 1820 if (sigdebug & SDB_FOLLOW) 1821 printf("sendsig(%d): pc %lx, catcher %lx\n", p->p_pid, 1822 frame->tf_regs[FRAME_PC], frame->tf_regs[FRAME_A3]); 1823 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1824 printf("sendsig(%d): sig %d returns\n", 1825 p->p_pid, sig); 1826 #endif 1827 } 1828 1829 /* 1830 * System call to cleanup state after a signal 1831 * has been taken. Reset signal mask and 1832 * stack state from context left by sendsig (above). 1833 * Return to previous pc and psl as specified by 1834 * context left by sendsig. Check carefully to 1835 * make sure that the user has not modified the 1836 * psl to gain improper priviledges or to cause 1837 * a machine fault. 1838 */ 1839 /* ARGSUSED */ 1840 int 1841 sys_sigreturn(p, v, retval) 1842 struct proc *p; 1843 void *v; 1844 register_t *retval; 1845 { 1846 struct sys_sigreturn_args /* { 1847 syscallarg(struct sigcontext *) sigcntxp; 1848 } */ *uap = v; 1849 struct sigcontext *scp, ksc; 1850 extern struct proc *fpcurproc; 1851 1852 scp = SCARG(uap, sigcntxp); 1853 #ifdef DEBUG 1854 if (sigdebug & SDB_FOLLOW) 1855 printf("sigreturn: pid %d, scp %p\n", p->p_pid, scp); 1856 #endif 1857 1858 if (ALIGN(scp) != (u_int64_t)scp) 1859 return (EINVAL); 1860 1861 /* 1862 * Test and fetch the context structure. 1863 * We grab it all at once for speed. 1864 */ 1865 #if defined(UVM) 1866 if (uvm_useracc((caddr_t)scp, sizeof (*scp), B_WRITE) == 0 || 1867 copyin((caddr_t)scp, (caddr_t)&ksc, sizeof ksc)) 1868 return (EINVAL); 1869 #else 1870 if (useracc((caddr_t)scp, sizeof (*scp), B_WRITE) == 0 || 1871 copyin((caddr_t)scp, (caddr_t)&ksc, sizeof ksc)) 1872 return (EINVAL); 1873 #endif 1874 1875 if (ksc.sc_regs[R_ZERO] != 0xACEDBADE) /* magic number */ 1876 return (EINVAL); 1877 /* 1878 * Restore the user-supplied information 1879 */ 1880 if (ksc.sc_onstack) 1881 p->p_sigacts->ps_sigstk.ss_flags |= SS_ONSTACK; 1882 else 1883 p->p_sigacts->ps_sigstk.ss_flags &= ~SS_ONSTACK; 1884 p->p_sigmask = ksc.sc_mask &~ sigcantmask; 1885 1886 p->p_md.md_tf->tf_regs[FRAME_PC] = ksc.sc_pc; 1887 p->p_md.md_tf->tf_regs[FRAME_PS] = 1888 (ksc.sc_ps | ALPHA_PSL_USERSET) & ~ALPHA_PSL_USERCLR; 1889 1890 regtoframe((struct reg *)ksc.sc_regs, p->p_md.md_tf); 1891 alpha_pal_wrusp(ksc.sc_regs[R_SP]); 1892 1893 /* XXX ksc.sc_ownedfp ? */ 1894 if (p == fpcurproc) 1895 fpcurproc = NULL; 1896 bcopy((struct fpreg *)ksc.sc_fpregs, &p->p_addr->u_pcb.pcb_fp, 1897 sizeof(struct fpreg)); 1898 /* XXX ksc.sc_fp_control ? */ 1899 1900 #ifdef DEBUG 1901 if (sigdebug & SDB_FOLLOW) 1902 printf("sigreturn(%d): returns\n", p->p_pid); 1903 #endif 1904 return (EJUSTRETURN); 1905 } 1906 1907 /* 1908 * machine dependent system variables. 1909 */ 1910 int 1911 cpu_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 1912 int *name; 1913 u_int namelen; 1914 void *oldp; 1915 size_t *oldlenp; 1916 void *newp; 1917 size_t newlen; 1918 struct proc *p; 1919 { 1920 dev_t consdev; 1921 1922 /* all sysctl names at this level are terminal */ 1923 if (namelen != 1) 1924 return (ENOTDIR); /* overloaded */ 1925 1926 switch (name[0]) { 1927 case CPU_CONSDEV: 1928 if (cn_tab != NULL) 1929 consdev = cn_tab->cn_dev; 1930 else 1931 consdev = NODEV; 1932 return (sysctl_rdstruct(oldp, oldlenp, newp, &consdev, 1933 sizeof consdev)); 1934 1935 case CPU_ROOT_DEVICE: 1936 return (sysctl_rdstring(oldp, oldlenp, newp, 1937 root_device->dv_xname)); 1938 1939 case CPU_UNALIGNED_PRINT: 1940 return (sysctl_int(oldp, oldlenp, newp, newlen, 1941 &alpha_unaligned_print)); 1942 1943 case CPU_UNALIGNED_FIX: 1944 return (sysctl_int(oldp, oldlenp, newp, newlen, 1945 &alpha_unaligned_fix)); 1946 1947 case CPU_UNALIGNED_SIGBUS: 1948 return (sysctl_int(oldp, oldlenp, newp, newlen, 1949 &alpha_unaligned_sigbus)); 1950 1951 case CPU_BOOTED_KERNEL: 1952 return (sysctl_rdstring(oldp, oldlenp, newp, 1953 bootinfo.booted_kernel)); 1954 1955 default: 1956 return (EOPNOTSUPP); 1957 } 1958 /* NOTREACHED */ 1959 } 1960 1961 /* 1962 * Set registers on exec. 1963 */ 1964 void 1965 setregs(p, pack, stack) 1966 register struct proc *p; 1967 struct exec_package *pack; 1968 u_long stack; 1969 { 1970 struct trapframe *tfp = p->p_md.md_tf; 1971 extern struct proc *fpcurproc; 1972 #ifdef DEBUG 1973 int i; 1974 #endif 1975 1976 #ifdef DEBUG 1977 /* 1978 * Crash and dump, if the user requested it. 1979 */ 1980 if (boothowto & RB_DUMP) 1981 panic("crash requested by boot flags"); 1982 #endif 1983 1984 #ifdef DEBUG 1985 for (i = 0; i < FRAME_SIZE; i++) 1986 tfp->tf_regs[i] = 0xbabefacedeadbeef; 1987 #else 1988 bzero(tfp->tf_regs, FRAME_SIZE * sizeof tfp->tf_regs[0]); 1989 #endif 1990 bzero(&p->p_addr->u_pcb.pcb_fp, sizeof p->p_addr->u_pcb.pcb_fp); 1991 #define FP_RN 2 /* XXX */ 1992 p->p_addr->u_pcb.pcb_fp.fpr_cr = (long)FP_RN << 58; 1993 alpha_pal_wrusp(stack); 1994 tfp->tf_regs[FRAME_PS] = ALPHA_PSL_USERSET; 1995 tfp->tf_regs[FRAME_PC] = pack->ep_entry & ~3; 1996 1997 tfp->tf_regs[FRAME_A0] = stack; /* a0 = sp */ 1998 tfp->tf_regs[FRAME_A1] = 0; /* a1 = rtld cleanup */ 1999 tfp->tf_regs[FRAME_A2] = 0; /* a2 = rtld object */ 2000 tfp->tf_regs[FRAME_A3] = (u_int64_t)PS_STRINGS; /* a3 = ps_strings */ 2001 tfp->tf_regs[FRAME_T12] = tfp->tf_regs[FRAME_PC]; /* a.k.a. PV */ 2002 2003 p->p_md.md_flags &= ~MDP_FPUSED; 2004 if (fpcurproc == p) 2005 fpcurproc = NULL; 2006 } 2007 2008 void 2009 netintr() 2010 { 2011 int n, s; 2012 2013 s = splhigh(); 2014 n = netisr; 2015 netisr = 0; 2016 splx(s); 2017 2018 #define DONETISR(bit, fn) \ 2019 do { \ 2020 if (n & (1 << (bit))) \ 2021 fn; \ 2022 } while (0) 2023 2024 #ifdef INET 2025 #if NARP > 0 2026 DONETISR(NETISR_ARP, arpintr()); 2027 #endif 2028 DONETISR(NETISR_IP, ipintr()); 2029 #endif 2030 #ifdef NETATALK 2031 DONETISR(NETISR_ATALK, atintr()); 2032 #endif 2033 #ifdef NS 2034 DONETISR(NETISR_NS, nsintr()); 2035 #endif 2036 #ifdef ISO 2037 DONETISR(NETISR_ISO, clnlintr()); 2038 #endif 2039 #ifdef CCITT 2040 DONETISR(NETISR_CCITT, ccittintr()); 2041 #endif 2042 #ifdef NATM 2043 DONETISR(NETISR_NATM, natmintr()); 2044 #endif 2045 #if NPPP > 1 2046 DONETISR(NETISR_PPP, pppintr()); 2047 #endif 2048 2049 #undef DONETISR 2050 } 2051 2052 void 2053 do_sir() 2054 { 2055 u_int64_t n; 2056 2057 do { 2058 (void)splhigh(); 2059 n = ssir; 2060 ssir = 0; 2061 splsoft(); /* don't recurse through spl0() */ 2062 2063 #if defined(UVM) 2064 #define COUNT_SOFT uvmexp.softs++ 2065 #else 2066 #define COUNT_SOFT cnt.v_soft++ 2067 #endif 2068 2069 #define DO_SIR(bit, fn) \ 2070 do { \ 2071 if (n & (bit)) { \ 2072 COUNT_SOFT; \ 2073 fn; \ 2074 } \ 2075 } while (0) 2076 2077 DO_SIR(SIR_NET, netintr()); 2078 DO_SIR(SIR_CLOCK, softclock()); 2079 2080 #undef COUNT_SOFT 2081 #undef DO_SIR 2082 } while (ssir != 0); 2083 } 2084 2085 int 2086 spl0() 2087 { 2088 2089 if (ssir) 2090 do_sir(); /* it lowers the IPL itself */ 2091 2092 return (alpha_pal_swpipl(ALPHA_PSL_IPL_0)); 2093 } 2094 2095 /* 2096 * The following primitives manipulate the run queues. _whichqs tells which 2097 * of the 32 queues _qs have processes in them. Setrunqueue puts processes 2098 * into queues, Remrunqueue removes them from queues. The running process is 2099 * on no queue, other processes are on a queue related to p->p_priority, 2100 * divided by 4 actually to shrink the 0-127 range of priorities into the 32 2101 * available queues. 2102 */ 2103 /* 2104 * setrunqueue(p) 2105 * proc *p; 2106 * 2107 * Call should be made at splclock(), and p->p_stat should be SRUN. 2108 */ 2109 2110 void 2111 setrunqueue(p) 2112 struct proc *p; 2113 { 2114 int bit; 2115 2116 /* firewall: p->p_back must be NULL */ 2117 if (p->p_back != NULL) 2118 panic("setrunqueue"); 2119 2120 bit = p->p_priority >> 2; 2121 whichqs |= (1 << bit); 2122 p->p_forw = (struct proc *)&qs[bit]; 2123 p->p_back = qs[bit].ph_rlink; 2124 p->p_back->p_forw = p; 2125 qs[bit].ph_rlink = p; 2126 } 2127 2128 /* 2129 * remrunqueue(p) 2130 * 2131 * Call should be made at splclock(). 2132 */ 2133 void 2134 remrunqueue(p) 2135 struct proc *p; 2136 { 2137 int bit; 2138 2139 bit = p->p_priority >> 2; 2140 if ((whichqs & (1 << bit)) == 0) 2141 panic("remrunqueue"); 2142 2143 p->p_back->p_forw = p->p_forw; 2144 p->p_forw->p_back = p->p_back; 2145 p->p_back = NULL; /* for firewall checking. */ 2146 2147 if ((struct proc *)&qs[bit] == qs[bit].ph_link) 2148 whichqs &= ~(1 << bit); 2149 } 2150 2151 /* 2152 * Return the best possible estimate of the time in the timeval 2153 * to which tvp points. Unfortunately, we can't read the hardware registers. 2154 * We guarantee that the time will be greater than the value obtained by a 2155 * previous call. 2156 */ 2157 void 2158 microtime(tvp) 2159 register struct timeval *tvp; 2160 { 2161 int s = splclock(); 2162 static struct timeval lasttime; 2163 2164 *tvp = time; 2165 #ifdef notdef 2166 tvp->tv_usec += clkread(); 2167 while (tvp->tv_usec > 1000000) { 2168 tvp->tv_sec++; 2169 tvp->tv_usec -= 1000000; 2170 } 2171 #endif 2172 if (tvp->tv_sec == lasttime.tv_sec && 2173 tvp->tv_usec <= lasttime.tv_usec && 2174 (tvp->tv_usec = lasttime.tv_usec + 1) > 1000000) { 2175 tvp->tv_sec++; 2176 tvp->tv_usec -= 1000000; 2177 } 2178 lasttime = *tvp; 2179 splx(s); 2180 } 2181 2182 /* 2183 * Wait "n" microseconds. 2184 */ 2185 void 2186 delay(n) 2187 unsigned long n; 2188 { 2189 long N = cycles_per_usec * (n); 2190 2191 while (N > 0) /* XXX */ 2192 N -= 3; /* XXX */ 2193 } 2194 2195 #if defined(COMPAT_OSF1) || 1 /* XXX */ 2196 void cpu_exec_ecoff_setregs __P((struct proc *, struct exec_package *, 2197 u_long)); 2198 2199 void 2200 cpu_exec_ecoff_setregs(p, epp, stack) 2201 struct proc *p; 2202 struct exec_package *epp; 2203 u_long stack; 2204 { 2205 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2206 2207 setregs(p, epp, stack); 2208 p->p_md.md_tf->tf_regs[FRAME_GP] = execp->a.gp_value; 2209 } 2210 2211 /* 2212 * cpu_exec_ecoff_hook(): 2213 * cpu-dependent ECOFF format hook for execve(). 2214 * 2215 * Do any machine-dependent diddling of the exec package when doing ECOFF. 2216 * 2217 */ 2218 int 2219 cpu_exec_ecoff_hook(p, epp) 2220 struct proc *p; 2221 struct exec_package *epp; 2222 { 2223 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2224 extern struct emul emul_netbsd; 2225 #ifdef COMPAT_OSF1 2226 extern struct emul emul_osf1; 2227 #endif 2228 2229 switch (execp->f.f_magic) { 2230 #ifdef COMPAT_OSF1 2231 case ECOFF_MAGIC_ALPHA: 2232 epp->ep_emul = &emul_osf1; 2233 break; 2234 #endif 2235 2236 case ECOFF_MAGIC_NETBSD_ALPHA: 2237 epp->ep_emul = &emul_netbsd; 2238 break; 2239 2240 default: 2241 return ENOEXEC; 2242 } 2243 return 0; 2244 } 2245 #endif 2246 2247 int 2248 alpha_pa_access(pa) 2249 u_long pa; 2250 { 2251 int i; 2252 2253 for (i = 0; i < mem_cluster_cnt; i++) { 2254 if (pa < mem_clusters[i].start) 2255 continue; 2256 if ((pa - mem_clusters[i].start) >= 2257 (mem_clusters[i].size & ~PAGE_MASK)) 2258 continue; 2259 return (mem_clusters[i].size & PAGE_MASK); /* prot */ 2260 } 2261 return (PROT_NONE); 2262 } 2263 2264 /* XXX XXX BEGIN XXX XXX */ 2265 vm_offset_t alpha_XXX_dmamap_or; /* XXX */ 2266 /* XXX */ 2267 vm_offset_t /* XXX */ 2268 alpha_XXX_dmamap(v) /* XXX */ 2269 vm_offset_t v; /* XXX */ 2270 { /* XXX */ 2271 /* XXX */ 2272 return (vtophys(v) | alpha_XXX_dmamap_or); /* XXX */ 2273 } /* XXX */ 2274 /* XXX XXX END XXX XXX */ 2275 2276 struct mchkinfo * 2277 cpu_mchkinfo() 2278 { 2279 if (mchkinfo_all_cpus == NULL) 2280 return &startup_info; 2281 return mchkinfo_all_cpus + alpha_pal_whami(); 2282 } 2283
Indexes created Wed Oct 01 19:09:53 GMT 2025