machdep.c revision 1.151
1 /* $NetBSD: machdep.c,v 1.151 1998/10/06 21:10:46 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_multiprocessor.h" 69 #include "opt_uvm.h" 70 #include "opt_pmap_new.h" 71 #include "opt_dec_3000_300.h" 72 #include "opt_dec_3000_500.h" 73 #include "opt_compat_osf1.h" 74 #include "opt_compat_netbsd.h" 75 #include "opt_inet.h" 76 #include "opt_atalk.h" 77 #include "opt_ccitt.h" 78 #include "opt_iso.h" 79 #include "opt_ns.h" 80 #include "opt_natm.h" 81 82 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 83 84 __KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.151 1998/10/06 21:10:46 thorpej Exp $"); 85 86 #include <sys/param.h> 87 #include <sys/systm.h> 88 #include <sys/signalvar.h> 89 #include <sys/kernel.h> 90 #include <sys/map.h> 91 #include <sys/proc.h> 92 #include <sys/buf.h> 93 #include <sys/reboot.h> 94 #include <sys/device.h> 95 #include <sys/file.h> 96 #ifdef REAL_CLISTS 97 #include <sys/clist.h> 98 #endif 99 #include <sys/callout.h> 100 #include <sys/malloc.h> 101 #include <sys/mbuf.h> 102 #include <sys/mman.h> 103 #include <sys/msgbuf.h> 104 #include <sys/ioctl.h> 105 #include <sys/tty.h> 106 #include <sys/user.h> 107 #include <sys/exec.h> 108 #include <sys/exec_ecoff.h> 109 #include <vm/vm.h> 110 #include <sys/sysctl.h> 111 #include <sys/core.h> 112 #include <sys/kcore.h> 113 #include <machine/kcore.h> 114 #ifdef SYSVMSG 115 #include <sys/msg.h> 116 #endif 117 #ifdef SYSVSEM 118 #include <sys/sem.h> 119 #endif 120 #ifdef SYSVSHM 121 #include <sys/shm.h> 122 #endif 123 124 #include <sys/mount.h> 125 #include <sys/syscallargs.h> 126 127 #include <vm/vm_kern.h> 128 129 #if defined(UVM) 130 #include <uvm/uvm_extern.h> 131 #endif 132 133 #include <dev/cons.h> 134 135 #include <machine/autoconf.h> 136 #include <machine/cpu.h> 137 #include <machine/reg.h> 138 #include <machine/rpb.h> 139 #include <machine/prom.h> 140 #include <machine/conf.h> 141 142 #include <alpha/alpha/cpuvar.h> 143 144 #include <net/netisr.h> 145 #include <net/if.h> 146 147 #ifdef INET 148 #include <net/route.h> 149 #include <netinet/in.h> 150 #include <netinet/ip_var.h> 151 #include "arp.h" 152 #if NARP > 0 153 #include <netinet/if_inarp.h> 154 #endif 155 #endif 156 #ifdef NS 157 #include <netns/ns_var.h> 158 #endif 159 #ifdef ISO 160 #include <netiso/iso.h> 161 #include <netiso/clnp.h> 162 #endif 163 #ifdef CCITT 164 #include <netccitt/x25.h> 165 #include <netccitt/pk.h> 166 #include <netccitt/pk_extern.h> 167 #endif 168 #ifdef NATM 169 #include <netnatm/natm.h> 170 #endif 171 #ifdef NETATALK 172 #include <netatalk/at_extern.h> 173 #endif 174 #include "ppp.h" 175 #if NPPP > 0 176 #include <net/ppp_defs.h> 177 #include <net/if_ppp.h> 178 #endif 179 180 #ifdef DDB 181 #include <machine/db_machdep.h> 182 #include <ddb/db_access.h> 183 #include <ddb/db_sym.h> 184 #include <ddb/db_extern.h> 185 #include <ddb/db_interface.h> 186 #endif 187 188 #include "com.h" 189 #if NCOM > 0 190 extern void comsoft __P((void)); 191 #endif 192 193 #if defined(UVM) 194 vm_map_t exec_map = NULL; 195 vm_map_t mb_map = NULL; 196 vm_map_t phys_map = NULL; 197 #else 198 vm_map_t buffer_map; 199 #endif 200 201 /* 202 * Declare these as initialized data so we can patch them. 203 */ 204 int nswbuf = 0; 205 #ifdef NBUF 206 int nbuf = NBUF; 207 #else 208 int nbuf = 0; 209 #endif 210 #ifdef BUFPAGES 211 int bufpages = BUFPAGES; 212 #else 213 int bufpages = 0; 214 #endif 215 caddr_t msgbufaddr; 216 217 int maxmem; /* max memory per process */ 218 219 int totalphysmem; /* total amount of physical memory in system */ 220 int physmem; /* physical memory used by NetBSD + some rsvd */ 221 int resvmem; /* amount of memory reserved for PROM */ 222 int unusedmem; /* amount of memory for OS that we don't use */ 223 int unknownmem; /* amount of memory with an unknown use */ 224 225 int cputype; /* system type, from the RPB */ 226 227 /* 228 * XXX We need an address to which we can assign things so that they 229 * won't be optimized away because we didn't use the value. 230 */ 231 u_int32_t no_optimize; 232 233 /* the following is used externally (sysctl_hw) */ 234 char machine[] = MACHINE; /* from <machine/param.h> */ 235 char machine_arch[] = MACHINE_ARCH; /* from <machine/param.h> */ 236 char cpu_model[128]; 237 238 struct user *proc0paddr; 239 240 /* Number of machine cycles per microsecond */ 241 u_int64_t cycles_per_usec; 242 243 /* number of cpus in the box. really! */ 244 int ncpus; 245 246 /* machine check info array, valloc()'ed in allocsys() */ 247 248 static struct mchkinfo startup_info, 249 *mchkinfo_all_cpus; 250 251 struct bootinfo_kernel bootinfo; 252 253 /* For built-in TCDS */ 254 #if defined(DEC_3000_300) || defined(DEC_3000_500) 255 u_int8_t dec_3000_scsiid[2], dec_3000_scsifast[2]; 256 #endif 257 258 struct platform platform; 259 260 u_int32_t vm_mbuf_size = _VM_MBUF_SIZE; 261 u_int32_t vm_kmem_size = _VM_KMEM_SIZE; 262 u_int32_t vm_phys_size = _VM_PHYS_SIZE; 263 264 #ifdef DDB 265 /* start and end of kernel symbol table */ 266 void *ksym_start, *ksym_end; 267 #endif 268 269 /* for cpu_sysctl() */ 270 int alpha_unaligned_print = 1; /* warn about unaligned accesses */ 271 int alpha_unaligned_fix = 1; /* fix up unaligned accesses */ 272 int alpha_unaligned_sigbus = 0; /* don't SIGBUS on fixed-up accesses */ 273 274 /* 275 * XXX This should be dynamically sized, but we have the chicken-egg problem! 276 * XXX it should also be larger than it is, because not all of the mddt 277 * XXX clusters end up being used for VM. 278 */ 279 phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX]; /* low size bits overloaded */ 280 int mem_cluster_cnt; 281 282 caddr_t allocsys __P((caddr_t)); 283 int cpu_dump __P((void)); 284 int cpu_dumpsize __P((void)); 285 u_long cpu_dump_mempagecnt __P((void)); 286 void dumpsys __P((void)); 287 void identifycpu __P((void)); 288 void netintr __P((void)); 289 void printregs __P((struct reg *)); 290 291 void 292 alpha_init(pfn, ptb, bim, bip, biv) 293 u_long pfn; /* first free PFN number */ 294 u_long ptb; /* PFN of current level 1 page table */ 295 u_long bim; /* bootinfo magic */ 296 u_long bip; /* bootinfo pointer */ 297 u_long biv; /* bootinfo version */ 298 { 299 extern char kernel_text[], _end[]; 300 struct mddt *mddtp; 301 struct mddt_cluster *memc; 302 int i, mddtweird; 303 struct vm_physseg *vps; 304 vaddr_t kernstart, kernend; 305 paddr_t kernstartpfn, kernendpfn, pfn0, pfn1; 306 vsize_t size; 307 char *p; 308 caddr_t v; 309 char *bootinfo_msg; 310 311 /* NO OUTPUT ALLOWED UNTIL FURTHER NOTICE */ 312 313 /* 314 * Turn off interrupts (not mchecks) and floating point. 315 * Make sure the instruction and data streams are consistent. 316 */ 317 (void)alpha_pal_swpipl(ALPHA_PSL_IPL_HIGH); 318 alpha_pal_wrfen(0); 319 ALPHA_TBIA(); 320 alpha_pal_imb(); 321 322 /* 323 * Get critical system information (if possible, from the 324 * information provided by the boot program). 325 */ 326 bootinfo_msg = NULL; 327 if (bim == BOOTINFO_MAGIC) { 328 if (biv == 0) { /* backward compat */ 329 biv = *(u_long *)bip; 330 bip += 8; 331 } 332 switch (biv) { 333 case 1: { 334 struct bootinfo_v1 *v1p = (struct bootinfo_v1 *)bip; 335 336 bootinfo.ssym = v1p->ssym; 337 bootinfo.esym = v1p->esym; 338 /* hwrpb may not be provided by boot block in v1 */ 339 if (v1p->hwrpb != NULL) { 340 bootinfo.hwrpb_phys = 341 ((struct rpb *)v1p->hwrpb)->rpb_phys; 342 bootinfo.hwrpb_size = v1p->hwrpbsize; 343 } else { 344 bootinfo.hwrpb_phys = 345 ((struct rpb *)HWRPB_ADDR)->rpb_phys; 346 bootinfo.hwrpb_size = 347 ((struct rpb *)HWRPB_ADDR)->rpb_size; 348 } 349 bcopy(v1p->boot_flags, bootinfo.boot_flags, 350 min(sizeof v1p->boot_flags, 351 sizeof bootinfo.boot_flags)); 352 bcopy(v1p->booted_kernel, bootinfo.booted_kernel, 353 min(sizeof v1p->booted_kernel, 354 sizeof bootinfo.booted_kernel)); 355 /* booted dev not provided in bootinfo */ 356 init_prom_interface((struct rpb *) 357 ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys)); 358 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 359 sizeof bootinfo.booted_dev); 360 break; 361 } 362 default: 363 bootinfo_msg = "unknown bootinfo version"; 364 goto nobootinfo; 365 } 366 } else { 367 bootinfo_msg = "boot program did not pass bootinfo"; 368 nobootinfo: 369 bootinfo.ssym = (u_long)_end; 370 bootinfo.esym = (u_long)_end; 371 bootinfo.hwrpb_phys = ((struct rpb *)HWRPB_ADDR)->rpb_phys; 372 bootinfo.hwrpb_size = ((struct rpb *)HWRPB_ADDR)->rpb_size; 373 init_prom_interface((struct rpb *)HWRPB_ADDR); 374 prom_getenv(PROM_E_BOOTED_OSFLAGS, bootinfo.boot_flags, 375 sizeof bootinfo.boot_flags); 376 prom_getenv(PROM_E_BOOTED_FILE, bootinfo.booted_kernel, 377 sizeof bootinfo.booted_kernel); 378 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 379 sizeof bootinfo.booted_dev); 380 } 381 382 /* 383 * Initialize the kernel's mapping of the RPB. It's needed for 384 * lots of things. 385 */ 386 hwrpb = (struct rpb *)ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys); 387 388 #if defined(DEC_3000_300) || defined(DEC_3000_500) 389 if (hwrpb->rpb_type == ST_DEC_3000_300 || 390 hwrpb->rpb_type == ST_DEC_3000_500) { 391 prom_getenv(PROM_E_SCSIID, dec_3000_scsiid, 392 sizeof(dec_3000_scsiid)); 393 prom_getenv(PROM_E_SCSIFAST, dec_3000_scsifast, 394 sizeof(dec_3000_scsifast)); 395 } 396 #endif 397 398 /* 399 * Remember how many cycles there are per microsecond, 400 * so that we can use delay(). Round up, for safety. 401 */ 402 cycles_per_usec = (hwrpb->rpb_cc_freq + 999999) / 1000000; 403 404 /* 405 * Initalize the (temporary) bootstrap console interface, so 406 * we can use printf until the VM system starts being setup. 407 * The real console is initialized before then. 408 */ 409 init_bootstrap_console(); 410 411 /* OUTPUT NOW ALLOWED */ 412 413 /* delayed from above */ 414 if (bootinfo_msg) 415 printf("WARNING: %s (0x%lx, 0x%lx, 0x%lx)\n", 416 bootinfo_msg, bim, bip, biv); 417 418 /* Initialize the trap vectors on the primary processor. */ 419 trap_init(); 420 421 /* 422 * Find out what hardware we're on, and do basic initialization. 423 */ 424 cputype = hwrpb->rpb_type; 425 if (cputype >= ncpuinit) { 426 platform_not_supported(); 427 /* NOTREACHED */ 428 } 429 (*cpuinit[cputype].init)(); 430 strcpy(cpu_model, platform.model); 431 432 /* 433 * Initalize the real console, so the the bootstrap console is 434 * no longer necessary. 435 */ 436 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 437 if (!pmap_uses_prom_console()) 438 #endif 439 (*platform.cons_init)(); 440 441 #ifdef DIAGNOSTIC 442 /* Paranoid sanity checking */ 443 444 /* We should always be running on the the primary. */ 445 assert(hwrpb->rpb_primary_cpu_id == alpha_pal_whami()); 446 447 /* 448 * On single-CPU systypes, the primary should always be CPU 0, 449 * except on Alpha 8200 systems where the CPU id is related 450 * to the VID, which is related to the Turbo Laser node id. 451 */ 452 if (cputype != ST_DEC_21000) 453 assert(hwrpb->rpb_primary_cpu_id == 0); 454 #endif 455 456 /* NO MORE FIRMWARE ACCESS ALLOWED */ 457 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 458 /* 459 * XXX (unless _PMAP_MAY_USE_PROM_CONSOLE is defined and 460 * XXX pmap_uses_prom_console() evaluates to non-zero.) 461 */ 462 #endif 463 464 /* 465 * find out this system's page size 466 */ 467 PAGE_SIZE = hwrpb->rpb_page_size; 468 if (PAGE_SIZE != 8192) 469 panic("page size %d != 8192?!", PAGE_SIZE); 470 471 /* 472 * Initialize PAGE_SIZE-dependent variables. 473 */ 474 #if defined(UVM) 475 uvm_setpagesize(); 476 #else 477 vm_set_page_size(); 478 #endif 479 480 /* 481 * Find the beginning and end of the kernel (and leave a 482 * bit of space before the beginning for the bootstrap 483 * stack). 484 */ 485 kernstart = trunc_page(kernel_text) - 2 * PAGE_SIZE; 486 #ifdef DDB 487 ksym_start = (void *)bootinfo.ssym; 488 ksym_end = (void *)bootinfo.esym; 489 kernend = (vaddr_t)round_page(ksym_end); 490 #else 491 kernend = (vaddr_t)round_page(_end); 492 #endif 493 494 kernstartpfn = atop(ALPHA_K0SEG_TO_PHYS(kernstart)); 495 kernendpfn = atop(ALPHA_K0SEG_TO_PHYS(kernend)); 496 497 /* 498 * Find out how much memory is available, by looking at 499 * the memory cluster descriptors. This also tries to do 500 * its best to detect things things that have never been seen 501 * before... 502 */ 503 mddtp = (struct mddt *)(((caddr_t)hwrpb) + hwrpb->rpb_memdat_off); 504 505 /* MDDT SANITY CHECKING */ 506 mddtweird = 0; 507 if (mddtp->mddt_cluster_cnt < 2) { 508 mddtweird = 1; 509 printf("WARNING: weird number of mem clusters: %d\n", 510 mddtp->mddt_cluster_cnt); 511 } 512 513 #if 0 514 printf("Memory cluster count: %d\n", mddtp->mddt_cluster_cnt); 515 #endif 516 517 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 518 memc = &mddtp->mddt_clusters[i]; 519 #if 0 520 printf("MEMC %d: pfn 0x%lx cnt 0x%lx usage 0x%lx\n", i, 521 memc->mddt_pfn, memc->mddt_pg_cnt, memc->mddt_usage); 522 #endif 523 totalphysmem += memc->mddt_pg_cnt; 524 if (mem_cluster_cnt < VM_PHYSSEG_MAX) { /* XXX */ 525 mem_clusters[mem_cluster_cnt].start = 526 ptoa(memc->mddt_pfn); 527 mem_clusters[mem_cluster_cnt].size = 528 ptoa(memc->mddt_pg_cnt); 529 if (memc->mddt_usage & MDDT_mbz || 530 memc->mddt_usage & MDDT_NONVOLATILE || /* XXX */ 531 memc->mddt_usage & MDDT_PALCODE) 532 mem_clusters[mem_cluster_cnt].size |= 533 PROT_READ; 534 else 535 mem_clusters[mem_cluster_cnt].size |= 536 PROT_READ | PROT_WRITE | PROT_EXEC; 537 mem_cluster_cnt++; 538 } 539 540 if (memc->mddt_usage & MDDT_mbz) { 541 mddtweird = 1; 542 printf("WARNING: mem cluster %d has weird " 543 "usage 0x%lx\n", i, memc->mddt_usage); 544 unknownmem += memc->mddt_pg_cnt; 545 continue; 546 } 547 if (memc->mddt_usage & MDDT_NONVOLATILE) { 548 /* XXX should handle these... */ 549 printf("WARNING: skipping non-volatile mem " 550 "cluster %d\n", i); 551 unusedmem += memc->mddt_pg_cnt; 552 continue; 553 } 554 if (memc->mddt_usage & MDDT_PALCODE) { 555 resvmem += memc->mddt_pg_cnt; 556 continue; 557 } 558 559 /* 560 * We have a memory cluster available for system 561 * software use. We must determine if this cluster 562 * holds the kernel. 563 */ 564 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 565 /* 566 * XXX If the kernel uses the PROM console, we only use the 567 * XXX memory after the kernel in the first system segment, 568 * XXX to avoid clobbering prom mapping, data, etc. 569 */ 570 if (!pmap_uses_prom_console() || physmem == 0) { 571 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 572 physmem += memc->mddt_pg_cnt; 573 pfn0 = memc->mddt_pfn; 574 pfn1 = memc->mddt_pfn + memc->mddt_pg_cnt; 575 if (pfn0 <= kernstartpfn && kernendpfn <= pfn1) { 576 /* 577 * Must compute the location of the kernel 578 * within the segment. 579 */ 580 #if 0 581 printf("Cluster %d contains kernel\n", i); 582 #endif 583 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 584 if (!pmap_uses_prom_console()) { 585 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 586 if (pfn0 < kernstartpfn) { 587 /* 588 * There is a chunk before the kernel. 589 */ 590 #if 0 591 printf("Loading chunk before kernel: " 592 "0x%lx / 0x%lx\n", pfn0, kernstartpfn); 593 #endif 594 #if defined(UVM) 595 uvm_page_physload(pfn0, kernstartpfn, 596 pfn0, kernstartpfn, VM_FREELIST_DEFAULT); 597 #else 598 vm_page_physload(pfn0, kernstartpfn, 599 pfn0, kernstartpfn); 600 #endif 601 } 602 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 603 } 604 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 605 if (kernendpfn < pfn1) { 606 /* 607 * There is a chunk after the kernel. 608 */ 609 #if 0 610 printf("Loading chunk after kernel: " 611 "0x%lx / 0x%lx\n", kernendpfn, pfn1); 612 #endif 613 #if defined(UVM) 614 uvm_page_physload(kernendpfn, pfn1, 615 kernendpfn, pfn1, VM_FREELIST_DEFAULT); 616 #else 617 vm_page_physload(kernendpfn, pfn1, 618 kernendpfn, pfn1); 619 #endif 620 } 621 } else { 622 /* 623 * Just load this cluster as one chunk. 624 */ 625 #if 0 626 printf("Loading cluster %d: 0x%lx / 0x%lx\n", i, 627 pfn0, pfn1); 628 #endif 629 #if defined(UVM) 630 uvm_page_physload(pfn0, pfn1, pfn0, pfn1, 631 VM_FREELIST_DEFAULT); 632 #else 633 vm_page_physload(pfn0, pfn1, pfn0, pfn1); 634 #endif 635 } 636 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 637 } 638 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 639 } 640 641 /* 642 * Dump out the MDDT if it looks odd... 643 */ 644 if (mddtweird) { 645 printf("\n"); 646 printf("complete memory cluster information:\n"); 647 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 648 printf("mddt %d:\n", i); 649 printf("\tpfn %lx\n", 650 mddtp->mddt_clusters[i].mddt_pfn); 651 printf("\tcnt %lx\n", 652 mddtp->mddt_clusters[i].mddt_pg_cnt); 653 printf("\ttest %lx\n", 654 mddtp->mddt_clusters[i].mddt_pg_test); 655 printf("\tbva %lx\n", 656 mddtp->mddt_clusters[i].mddt_v_bitaddr); 657 printf("\tbpa %lx\n", 658 mddtp->mddt_clusters[i].mddt_p_bitaddr); 659 printf("\tbcksum %lx\n", 660 mddtp->mddt_clusters[i].mddt_bit_cksum); 661 printf("\tusage %lx\n", 662 mddtp->mddt_clusters[i].mddt_usage); 663 } 664 printf("\n"); 665 } 666 667 if (totalphysmem == 0) 668 panic("can't happen: system seems to have no memory!"); 669 670 #ifdef LIMITMEM 671 /* 672 * XXX Kludge so we can run on machines with memory larger 673 * XXX than 1G until all device drivers are converted to 674 * XXX use bus_dma. (Relies on the fact that vm_physmem 675 * XXX sorted in order of increasing addresses.) 676 */ 677 if (vm_physmem[vm_nphysseg - 1].end > atop(LIMITMEM * 1024 * 1024)) { 678 679 printf("******** LIMITING MEMORY TO %dMB **********\n", 680 LIMITMEM); 681 682 do { 683 u_long ovf; 684 685 vps = &vm_physmem[vm_nphysseg - 1]; 686 687 if (vps->start >= atop(LIMITMEM * 1024 * 1024)) { 688 /* 689 * If the start is too high, just drop 690 * the whole segment. 691 * 692 * XXX can start != avail_start in this 693 * XXX case? wouldn't that mean that 694 * XXX some memory was stolen above the 695 * XXX limit? What to do? 696 */ 697 ovf = vps->end - vps->start; 698 vm_nphysseg--; 699 } else { 700 /* 701 * If the start is OK, calculate how much 702 * to drop and drop it. 703 */ 704 ovf = vps->end - atop(LIMITMEM * 1024 * 1024); 705 vps->end -= ovf; 706 vps->avail_end -= ovf; 707 } 708 physmem -= ovf; 709 unusedmem += ovf; 710 } while (vps->end > atop(LIMITMEM * 1024 * 1024)); 711 } 712 #endif /* LIMITMEM */ 713 714 maxmem = physmem; 715 716 #if 0 717 printf("totalphysmem = %d\n", totalphysmem); 718 printf("physmem = %d\n", physmem); 719 printf("resvmem = %d\n", resvmem); 720 printf("unusedmem = %d\n", unusedmem); 721 printf("unknownmem = %d\n", unknownmem); 722 #endif 723 724 /* 725 * Adjust some parameters if the amount of physmem 726 * available would cause us to croak. This is completely 727 * eyeballed and isn't meant to be the final answer. 728 * vm_phys_size is probably the only one to really worry 729 * about. 730 * 731 * It's for booting a GENERIC kernel on a large memory platform. 732 */ 733 if (physmem >= atop(128 * 1024 * 1024)) { 734 vm_mbuf_size <<= 1; 735 vm_kmem_size <<= 3; 736 vm_phys_size <<= 2; 737 } 738 739 /* 740 * Initialize error message buffer (at end of core). 741 */ 742 { 743 size_t sz = round_page(MSGBUFSIZE); 744 745 vps = &vm_physmem[vm_nphysseg - 1]; 746 747 /* shrink so that it'll fit in the last segment */ 748 if ((vps->avail_end - vps->avail_start) < atop(sz)) 749 sz = ptoa(vps->avail_end - vps->avail_start); 750 751 vps->end -= atop(sz); 752 vps->avail_end -= atop(sz); 753 msgbufaddr = (caddr_t) ALPHA_PHYS_TO_K0SEG(ptoa(vps->end)); 754 initmsgbuf(msgbufaddr, sz); 755 756 /* Remove the last segment if it now has no pages. */ 757 if (vps->start == vps->end) 758 vm_nphysseg--; 759 760 /* warn if the message buffer had to be shrunk */ 761 if (sz != round_page(MSGBUFSIZE)) 762 printf("WARNING: %d bytes not available for msgbuf in last cluster (%d used)\n", 763 round_page(MSGBUFSIZE), sz); 764 765 } 766 767 /* 768 * Init mapping for u page(s) for proc 0 769 */ 770 proc0.p_addr = proc0paddr = 771 (struct user *)pmap_steal_memory(UPAGES * PAGE_SIZE, NULL, NULL); 772 773 /* 774 * Allocate space for system data structures. These data structures 775 * are allocated here instead of cpu_startup() because physical 776 * memory is directly addressable. We don't have to map these into 777 * virtual address space. 778 */ 779 size = (vsize_t)allocsys(0); 780 v = (caddr_t)pmap_steal_memory(size, NULL, NULL); 781 if ((allocsys(v) - v) != size) 782 panic("alpha_init: table size inconsistency"); 783 784 /* 785 * Initialize the virtual memory system, and set the 786 * page table base register in proc 0's PCB. 787 */ 788 pmap_bootstrap(ALPHA_PHYS_TO_K0SEG(ptb << PGSHIFT), 789 hwrpb->rpb_max_asn, hwrpb->rpb_pcs_cnt); 790 791 /* 792 * Initialize the rest of proc 0's PCB, and cache its physical 793 * address. 794 */ 795 proc0.p_md.md_pcbpaddr = 796 (struct pcb *)ALPHA_K0SEG_TO_PHYS((vaddr_t)&proc0paddr->u_pcb); 797 798 /* 799 * Set the kernel sp, reserving space for an (empty) trapframe, 800 * and make proc0's trapframe pointer point to it for sanity. 801 */ 802 proc0paddr->u_pcb.pcb_hw.apcb_ksp = 803 (u_int64_t)proc0paddr + USPACE - sizeof(struct trapframe); 804 proc0.p_md.md_tf = 805 (struct trapframe *)proc0paddr->u_pcb.pcb_hw.apcb_ksp; 806 807 /* 808 * Look at arguments passed to us and compute boothowto. 809 */ 810 811 boothowto = RB_SINGLE; 812 #ifdef KADB 813 boothowto |= RB_KDB; 814 #endif 815 for (p = bootinfo.boot_flags; p && *p != '\0'; p++) { 816 /* 817 * Note that we'd really like to differentiate case here, 818 * but the Alpha AXP Architecture Reference Manual 819 * says that we shouldn't. 820 */ 821 switch (*p) { 822 case 'a': /* autoboot */ 823 case 'A': 824 boothowto &= ~RB_SINGLE; 825 break; 826 827 #ifdef DEBUG 828 case 'c': /* crash dump immediately after autoconfig */ 829 case 'C': 830 boothowto |= RB_DUMP; 831 break; 832 #endif 833 834 #if defined(KGDB) || defined(DDB) 835 case 'd': /* break into the kernel debugger ASAP */ 836 case 'D': 837 boothowto |= RB_KDB; 838 break; 839 #endif 840 841 case 'h': /* always halt, never reboot */ 842 case 'H': 843 boothowto |= RB_HALT; 844 break; 845 846 #if 0 847 case 'm': /* mini root present in memory */ 848 case 'M': 849 boothowto |= RB_MINIROOT; 850 break; 851 #endif 852 853 case 'n': /* askname */ 854 case 'N': 855 boothowto |= RB_ASKNAME; 856 break; 857 858 case 's': /* single-user (default, supported for sanity) */ 859 case 'S': 860 boothowto |= RB_SINGLE; 861 break; 862 863 case '-': 864 /* 865 * Just ignore this. It's not required, but it's 866 * common for it to be passed regardless. 867 */ 868 break; 869 870 default: 871 printf("Unrecognized boot flag '%c'.\n", *p); 872 break; 873 } 874 } 875 876 877 /* 878 * Figure out the number of cpus in the box, from RPB fields. 879 * Really. We mean it. 880 */ 881 for (i = 0; i < hwrpb->rpb_pcs_cnt; i++) { 882 struct pcs *pcsp; 883 884 pcsp = LOCATE_PCS(hwrpb, i); 885 if ((pcsp->pcs_flags & PCS_PP) != 0) 886 ncpus++; 887 } 888 889 /* 890 * Initialize debuggers, and break into them if appropriate. 891 */ 892 #ifdef DDB 893 db_machine_init(); 894 ddb_init(ksym_start, ksym_end); 895 if (boothowto & RB_KDB) 896 Debugger(); 897 #endif 898 #ifdef KGDB 899 if (boothowto & RB_KDB) 900 kgdb_connect(0); 901 #endif 902 /* 903 * Figure out our clock frequency, from RPB fields. 904 */ 905 hz = hwrpb->rpb_intr_freq >> 12; 906 if (!(60 <= hz && hz <= 10240)) { 907 hz = 1024; 908 #ifdef DIAGNOSTIC 909 printf("WARNING: unbelievable rpb_intr_freq: %ld (%d hz)\n", 910 hwrpb->rpb_intr_freq, hz); 911 #endif 912 } 913 } 914 915 /* 916 * Allocate space for system data structures. We are given 917 * a starting virtual address and we return a final virtual 918 * address; along the way we set each data structure pointer. 919 * 920 * We call allocsys() with 0 to find out how much space we want, 921 * allocate that much and fill it with zeroes, and the call 922 * allocsys() again with the correct base virtual address. 923 */ 924 caddr_t 925 allocsys(v) 926 caddr_t v; 927 { 928 929 #define valloc(name, type, num) \ 930 (name) = (type *)v; v = (caddr_t)ALIGN((name)+(num)) 931 932 #ifdef REAL_CLISTS 933 valloc(cfree, struct cblock, nclist); 934 #endif 935 valloc(callout, struct callout, ncallout); 936 #ifdef SYSVSHM 937 valloc(shmsegs, struct shmid_ds, shminfo.shmmni); 938 #endif 939 #ifdef SYSVSEM 940 valloc(sema, struct semid_ds, seminfo.semmni); 941 valloc(sem, struct sem, seminfo.semmns); 942 /* This is pretty disgusting! */ 943 valloc(semu, int, (seminfo.semmnu * seminfo.semusz) / sizeof(int)); 944 #endif 945 #ifdef SYSVMSG 946 valloc(msgpool, char, msginfo.msgmax); 947 valloc(msgmaps, struct msgmap, msginfo.msgseg); 948 valloc(msghdrs, struct msg, msginfo.msgtql); 949 valloc(msqids, struct msqid_ds, msginfo.msgmni); 950 #endif 951 952 /* 953 * Determine how many buffers to allocate. 954 * We allocate 10% of memory for buffer space. Insure a 955 * minimum of 16 buffers. We allocate 1/2 as many swap buffer 956 * headers as file i/o buffers. 957 */ 958 if (bufpages == 0) 959 bufpages = (physmem * 10) / (CLSIZE * 100); 960 if (nbuf == 0) { 961 nbuf = bufpages; 962 if (nbuf < 16) 963 nbuf = 16; 964 } 965 if (nswbuf == 0) { 966 nswbuf = (nbuf / 2) &~ 1; /* force even */ 967 if (nswbuf > 256) 968 nswbuf = 256; /* sanity */ 969 } 970 #if !defined(UVM) 971 valloc(swbuf, struct buf, nswbuf); 972 #endif 973 valloc(buf, struct buf, nbuf); 974 975 /* 976 * There appears to be a correlation between the number 977 * of processor slots defined in the HWRPB and the whami 978 * value that can be returned. 979 */ 980 valloc(mchkinfo_all_cpus, struct mchkinfo, hwrpb->rpb_pcs_cnt); 981 982 return (v); 983 #undef valloc 984 } 985 986 void 987 consinit() 988 { 989 990 /* 991 * Everything related to console initialization is done 992 * in alpha_init(). 993 */ 994 #if defined(DIAGNOSTIC) && defined(_PMAP_MAY_USE_PROM_CONSOLE) 995 printf("consinit: %susing prom console\n", 996 pmap_uses_prom_console() ? "" : "not "); 997 #endif 998 } 999 1000 #include "pckbc.h" 1001 #include "pckbd.h" 1002 #if (NPCKBC > 0) && (NPCKBD == 0) 1003 1004 #include <machine/bus.h> 1005 #include <dev/isa/pckbcvar.h> 1006 1007 /* 1008 * This is called by the pbkbc driver if no pckbd is configured. 1009 * On the i386, it is used to glue in the old, deprecated console 1010 * code. On the Alpha, it does nothing. 1011 */ 1012 int 1013 pckbc_machdep_cnattach(kbctag, kbcslot) 1014 pckbc_tag_t kbctag; 1015 pckbc_slot_t kbcslot; 1016 { 1017 1018 return (ENXIO); 1019 } 1020 #endif /* NPCKBC > 0 && NPCKBD == 0 */ 1021 1022 void 1023 cpu_startup() 1024 { 1025 register unsigned i; 1026 int base, residual; 1027 vaddr_t minaddr, maxaddr; 1028 vsize_t size; 1029 #if defined(DEBUG) 1030 extern int pmapdebug; 1031 int opmapdebug = pmapdebug; 1032 1033 pmapdebug = 0; 1034 #endif 1035 1036 /* 1037 * Good {morning,afternoon,evening,night}. 1038 */ 1039 printf(version); 1040 identifycpu(); 1041 printf("real mem = %lu (%lu reserved for PROM, %lu used by NetBSD)\n", 1042 ((psize_t) totalphysmem << (psize_t) PAGE_SHIFT), 1043 ptoa(resvmem), ptoa(physmem)); 1044 if (unusedmem) 1045 printf("WARNING: unused memory = %d bytes\n", ctob(unusedmem)); 1046 if (unknownmem) 1047 printf("WARNING: %d bytes of memory with unknown purpose\n", 1048 ctob(unknownmem)); 1049 1050 /* 1051 * Allocate virtual address space for file I/O buffers. 1052 * Note they are different than the array of headers, 'buf', 1053 * and usually occupy more virtual memory than physical. 1054 */ 1055 size = MAXBSIZE * nbuf; 1056 #if defined(UVM) 1057 if (uvm_map(kernel_map, (vaddr_t *) &buffers, round_page(size), 1058 NULL, UVM_UNKNOWN_OFFSET, 1059 UVM_MAPFLAG(UVM_PROT_NONE, UVM_PROT_NONE, UVM_INH_NONE, 1060 UVM_ADV_NORMAL, 0)) != KERN_SUCCESS) 1061 panic("startup: cannot allocate VM for buffers"); 1062 #else 1063 buffer_map = kmem_suballoc(kernel_map, (vaddr_t *)&buffers, 1064 &maxaddr, size, TRUE); 1065 minaddr = (vaddr_t)buffers; 1066 if (vm_map_find(buffer_map, vm_object_allocate(size), (vaddr_t)0, 1067 &minaddr, size, FALSE) != KERN_SUCCESS) 1068 panic("startup: cannot allocate buffers"); 1069 #endif /* UVM */ 1070 base = bufpages / nbuf; 1071 residual = bufpages % nbuf; 1072 for (i = 0; i < nbuf; i++) { 1073 #if defined(UVM) 1074 vsize_t curbufsize; 1075 vaddr_t curbuf; 1076 struct vm_page *pg; 1077 1078 /* 1079 * Each buffer has MAXBSIZE bytes of VM space allocated. Of 1080 * that MAXBSIZE space, we allocate and map (base+1) pages 1081 * for the first "residual" buffers, and then we allocate 1082 * "base" pages for the rest. 1083 */ 1084 curbuf = (vaddr_t) buffers + (i * MAXBSIZE); 1085 curbufsize = CLBYTES * ((i < residual) ? (base+1) : base); 1086 1087 while (curbufsize) { 1088 pg = uvm_pagealloc(NULL, 0, NULL); 1089 if (pg == NULL) 1090 panic("cpu_startup: not enough memory for " 1091 "buffer cache"); 1092 #if defined(PMAP_NEW) 1093 pmap_kenter_pgs(curbuf, &pg, 1); 1094 #else 1095 pmap_enter(kernel_map->pmap, curbuf, 1096 VM_PAGE_TO_PHYS(pg), VM_PROT_ALL, TRUE); 1097 #endif 1098 curbuf += PAGE_SIZE; 1099 curbufsize -= PAGE_SIZE; 1100 } 1101 #else /* ! UVM */ 1102 vsize_t curbufsize; 1103 vaddr_t curbuf; 1104 1105 /* 1106 * First <residual> buffers get (base+1) physical pages 1107 * allocated for them. The rest get (base) physical pages. 1108 * 1109 * The rest of each buffer occupies virtual space, 1110 * but has no physical memory allocated for it. 1111 */ 1112 curbuf = (vaddr_t)buffers + i * MAXBSIZE; 1113 curbufsize = CLBYTES * (i < residual ? base+1 : base); 1114 vm_map_pageable(buffer_map, curbuf, curbuf+curbufsize, FALSE); 1115 vm_map_simplify(buffer_map, curbuf); 1116 #endif /* UVM */ 1117 } 1118 /* 1119 * Allocate a submap for exec arguments. This map effectively 1120 * limits the number of processes exec'ing at any time. 1121 */ 1122 #if defined(UVM) 1123 exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 1124 16 * NCARGS, TRUE, FALSE, NULL); 1125 #else 1126 exec_map = kmem_suballoc(kernel_map, &minaddr, &maxaddr, 1127 16 * NCARGS, TRUE); 1128 #endif 1129 1130 /* 1131 * Allocate a submap for physio 1132 */ 1133 #if defined(UVM) 1134 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 1135 VM_PHYS_SIZE, TRUE, FALSE, NULL); 1136 #else 1137 phys_map = kmem_suballoc(kernel_map, &minaddr, &maxaddr, 1138 VM_PHYS_SIZE, TRUE); 1139 #endif 1140 1141 /* 1142 * Finally, allocate mbuf cluster submap. 1143 */ 1144 #if defined(UVM) 1145 mb_map = uvm_km_suballoc(kernel_map, (vaddr_t *)&mbutl, &maxaddr, 1146 VM_MBUF_SIZE, FALSE, FALSE, NULL); 1147 #else 1148 mb_map = kmem_suballoc(kernel_map, (vaddr_t *)&mbutl, &maxaddr, 1149 VM_MBUF_SIZE, FALSE); 1150 #endif 1151 /* 1152 * Initialize callouts 1153 */ 1154 callfree = callout; 1155 for (i = 1; i < ncallout; i++) 1156 callout[i-1].c_next = &callout[i]; 1157 callout[i-1].c_next = NULL; 1158 1159 #if defined(DEBUG) 1160 pmapdebug = opmapdebug; 1161 #endif 1162 #if defined(UVM) 1163 printf("avail mem = %ld\n", (long)ptoa(uvmexp.free)); 1164 #else 1165 printf("avail mem = %ld\n", (long)ptoa(cnt.v_free_count)); 1166 #endif 1167 #if 0 1168 { 1169 extern u_long pmap_pages_stolen; 1170 printf("stolen memory for VM structures = %ld bytes\n", 1171 pmap_pages_stolen * PAGE_SIZE); 1172 } 1173 #endif 1174 printf("using %ld buffers containing %ld bytes of memory\n", 1175 (long)nbuf, (long)(bufpages * CLBYTES)); 1176 1177 /* 1178 * Set up buffers, so they can be used to read disk labels. 1179 */ 1180 bufinit(); 1181 1182 /* 1183 * Set up the HWPCB so that it's safe to configure secondary 1184 * CPUs. 1185 */ 1186 hwrpb_primary_init(); 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 #if defined(MULTIPROCESSOR) 1200 /* 1201 * Spin up any secondary CPUs. 1202 */ 1203 cpu_run_spinup_queue(); 1204 Debugger(); 1205 #endif /* MULTIPROCESSOR */ 1206 } 1207 1208 /* 1209 * Retrieve the platform name from the DSR. 1210 */ 1211 const char * 1212 alpha_dsr_sysname() 1213 { 1214 struct dsrdb *dsr; 1215 const char *sysname; 1216 1217 /* 1218 * DSR does not exist on early HWRPB versions. 1219 */ 1220 if (hwrpb->rpb_version < HWRPB_DSRDB_MINVERS) 1221 return (NULL); 1222 1223 dsr = (struct dsrdb *)(((caddr_t)hwrpb) + hwrpb->rpb_dsrdb_off); 1224 sysname = (const char *)((caddr_t)dsr + (dsr->dsr_sysname_off + 1225 sizeof(u_int64_t))); 1226 return (sysname); 1227 } 1228 1229 /* 1230 * Lookup the system specified system variation in the provided table, 1231 * returning the model string on match. 1232 */ 1233 const char * 1234 alpha_variation_name(variation, avtp) 1235 u_int64_t variation; 1236 const struct alpha_variation_table *avtp; 1237 { 1238 int i; 1239 1240 for (i = 0; avtp[i].avt_model != NULL; i++) 1241 if (avtp[i].avt_variation == variation) 1242 return (avtp[i].avt_model); 1243 return (NULL); 1244 } 1245 1246 /* 1247 * Generate a default platform name based for unknown system variations. 1248 */ 1249 const char * 1250 alpha_unknown_sysname() 1251 { 1252 static char s[128]; /* safe size */ 1253 1254 sprintf(s, "%s family, unknown model variation 0x%lx", 1255 platform.family, hwrpb->rpb_variation & SV_ST_MASK); 1256 return ((const char *)s); 1257 } 1258 1259 void 1260 identifycpu() 1261 { 1262 1263 /* 1264 * print out CPU identification information. 1265 */ 1266 printf("%s, %ldMHz\n", cpu_model, 1267 hwrpb->rpb_cc_freq / 1000000); /* XXX true for 21164? */ 1268 printf("%ld byte page size, %d processor%s.\n", 1269 hwrpb->rpb_page_size, ncpus, ncpus == 1 ? "" : "s"); 1270 #if 0 1271 /* this isn't defined for any systems that we run on? */ 1272 printf("serial number 0x%lx 0x%lx\n", 1273 ((long *)hwrpb->rpb_ssn)[0], ((long *)hwrpb->rpb_ssn)[1]); 1274 1275 /* and these aren't particularly useful! */ 1276 printf("variation: 0x%lx, revision 0x%lx\n", 1277 hwrpb->rpb_variation, *(long *)hwrpb->rpb_revision); 1278 #endif 1279 } 1280 1281 int waittime = -1; 1282 struct pcb dumppcb; 1283 1284 void 1285 cpu_reboot(howto, bootstr) 1286 int howto; 1287 char *bootstr; 1288 { 1289 extern int cold; 1290 #if defined(MULTIPROCESSOR) 1291 #if 0 /* XXX See below. */ 1292 u_long cpu_id; 1293 #endif 1294 #endif 1295 1296 #if defined(MULTIPROCESSOR) 1297 /* We must be running on the primary CPU. */ 1298 if (alpha_pal_whami() != hwrpb->rpb_primary_cpu_id) 1299 panic("cpu_reboot: not on primary CPU!"); 1300 #endif 1301 1302 /* If system is cold, just halt. */ 1303 if (cold) { 1304 howto |= RB_HALT; 1305 goto haltsys; 1306 } 1307 1308 /* If "always halt" was specified as a boot flag, obey. */ 1309 if ((boothowto & RB_HALT) != 0) 1310 howto |= RB_HALT; 1311 1312 boothowto = howto; 1313 if ((howto & RB_NOSYNC) == 0 && waittime < 0) { 1314 waittime = 0; 1315 vfs_shutdown(); 1316 /* 1317 * If we've been adjusting the clock, the todr 1318 * will be out of synch; adjust it now. 1319 */ 1320 resettodr(); 1321 } 1322 1323 /* Disable interrupts. */ 1324 splhigh(); 1325 1326 /* If rebooting and a dump is requested do it. */ 1327 #if 0 1328 if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP) 1329 #else 1330 if (howto & RB_DUMP) 1331 #endif 1332 dumpsys(); 1333 1334 haltsys: 1335 1336 /* run any shutdown hooks */ 1337 doshutdownhooks(); 1338 1339 #if defined(MULTIPROCESSOR) 1340 #if 0 /* XXX doesn't work when called from here?! */ 1341 /* Kill off any secondary CPUs. */ 1342 for (cpu_id = 0; cpu_id < hwrpb->rpb_pcs_cnt; cpu_id++) { 1343 if (cpu_id == hwrpb->rpb_primary_cpu_id || 1344 cpus[cpu_id] == NULL) 1345 continue; 1346 cpu_halt_secondary(cpu_id); 1347 } 1348 #endif 1349 #endif 1350 1351 #ifdef BOOTKEY 1352 printf("hit any key to %s...\n", howto & RB_HALT ? "halt" : "reboot"); 1353 cnpollc(1); /* for proper keyboard command handling */ 1354 cngetc(); 1355 cnpollc(0); 1356 printf("\n"); 1357 #endif 1358 1359 /* Finally, powerdown/halt/reboot the system. */ 1360 if ((howto && RB_POWERDOWN) == RB_POWERDOWN && 1361 platform.powerdown != NULL) { 1362 (*platform.powerdown)(); 1363 printf("WARNING: powerdown failed!\n"); 1364 } 1365 printf("%s\n\n", howto & RB_HALT ? "halted." : "rebooting..."); 1366 prom_halt(howto & RB_HALT); 1367 /*NOTREACHED*/ 1368 } 1369 1370 /* 1371 * These variables are needed by /sbin/savecore 1372 */ 1373 u_long dumpmag = 0x8fca0101; /* magic number */ 1374 int dumpsize = 0; /* pages */ 1375 long dumplo = 0; /* blocks */ 1376 1377 /* 1378 * cpu_dumpsize: calculate size of machine-dependent kernel core dump headers. 1379 */ 1380 int 1381 cpu_dumpsize() 1382 { 1383 int size; 1384 1385 size = ALIGN(sizeof(kcore_seg_t)) + ALIGN(sizeof(cpu_kcore_hdr_t)) + 1386 ALIGN(mem_cluster_cnt * sizeof(phys_ram_seg_t)); 1387 if (roundup(size, dbtob(1)) != dbtob(1)) 1388 return -1; 1389 1390 return (1); 1391 } 1392 1393 /* 1394 * cpu_dump_mempagecnt: calculate size of RAM (in pages) to be dumped. 1395 */ 1396 u_long 1397 cpu_dump_mempagecnt() 1398 { 1399 u_long i, n; 1400 1401 n = 0; 1402 for (i = 0; i < mem_cluster_cnt; i++) 1403 n += atop(mem_clusters[i].size); 1404 return (n); 1405 } 1406 1407 /* 1408 * cpu_dump: dump machine-dependent kernel core dump headers. 1409 */ 1410 int 1411 cpu_dump() 1412 { 1413 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1414 char buf[dbtob(1)]; 1415 kcore_seg_t *segp; 1416 cpu_kcore_hdr_t *cpuhdrp; 1417 phys_ram_seg_t *memsegp; 1418 int i; 1419 1420 dump = bdevsw[major(dumpdev)].d_dump; 1421 1422 bzero(buf, sizeof buf); 1423 segp = (kcore_seg_t *)buf; 1424 cpuhdrp = (cpu_kcore_hdr_t *)&buf[ALIGN(sizeof(*segp))]; 1425 memsegp = (phys_ram_seg_t *)&buf[ ALIGN(sizeof(*segp)) + 1426 ALIGN(sizeof(*cpuhdrp))]; 1427 1428 /* 1429 * Generate a segment header. 1430 */ 1431 CORE_SETMAGIC(*segp, KCORE_MAGIC, MID_MACHINE, CORE_CPU); 1432 segp->c_size = dbtob(1) - ALIGN(sizeof(*segp)); 1433 1434 /* 1435 * Add the machine-dependent header info. 1436 */ 1437 cpuhdrp->lev1map_pa = ALPHA_K0SEG_TO_PHYS((vaddr_t)kernel_lev1map); 1438 cpuhdrp->page_size = PAGE_SIZE; 1439 cpuhdrp->nmemsegs = mem_cluster_cnt; 1440 1441 /* 1442 * Fill in the memory segment descriptors. 1443 */ 1444 for (i = 0; i < mem_cluster_cnt; i++) { 1445 memsegp[i].start = mem_clusters[i].start; 1446 memsegp[i].size = mem_clusters[i].size & ~PAGE_MASK; 1447 } 1448 1449 return (dump(dumpdev, dumplo, (caddr_t)buf, dbtob(1))); 1450 } 1451 1452 /* 1453 * This is called by main to set dumplo and dumpsize. 1454 * Dumps always skip the first CLBYTES of disk space 1455 * in case there might be a disk label stored there. 1456 * If there is extra space, put dump at the end to 1457 * reduce the chance that swapping trashes it. 1458 */ 1459 void 1460 cpu_dumpconf() 1461 { 1462 int nblks, dumpblks; /* size of dump area */ 1463 int maj; 1464 1465 if (dumpdev == NODEV) 1466 goto bad; 1467 maj = major(dumpdev); 1468 if (maj < 0 || maj >= nblkdev) 1469 panic("dumpconf: bad dumpdev=0x%x", dumpdev); 1470 if (bdevsw[maj].d_psize == NULL) 1471 goto bad; 1472 nblks = (*bdevsw[maj].d_psize)(dumpdev); 1473 if (nblks <= ctod(1)) 1474 goto bad; 1475 1476 dumpblks = cpu_dumpsize(); 1477 if (dumpblks < 0) 1478 goto bad; 1479 dumpblks += ctod(cpu_dump_mempagecnt()); 1480 1481 /* If dump won't fit (incl. room for possible label), punt. */ 1482 if (dumpblks > (nblks - ctod(1))) 1483 goto bad; 1484 1485 /* Put dump at end of partition */ 1486 dumplo = nblks - dumpblks; 1487 1488 /* dumpsize is in page units, and doesn't include headers. */ 1489 dumpsize = cpu_dump_mempagecnt(); 1490 return; 1491 1492 bad: 1493 dumpsize = 0; 1494 return; 1495 } 1496 1497 /* 1498 * Dump the kernel's image to the swap partition. 1499 */ 1500 #define BYTES_PER_DUMP NBPG 1501 1502 void 1503 dumpsys() 1504 { 1505 u_long totalbytesleft, bytes, i, n, memcl; 1506 u_long maddr; 1507 int psize; 1508 daddr_t blkno; 1509 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1510 int error; 1511 1512 /* Save registers. */ 1513 savectx(&dumppcb); 1514 1515 msgbufenabled = 0; /* don't record dump msgs in msgbuf */ 1516 if (dumpdev == NODEV) 1517 return; 1518 1519 /* 1520 * For dumps during autoconfiguration, 1521 * if dump device has already configured... 1522 */ 1523 if (dumpsize == 0) 1524 cpu_dumpconf(); 1525 if (dumplo <= 0) { 1526 printf("\ndump to dev %u,%u not possible\n", major(dumpdev), 1527 minor(dumpdev)); 1528 return; 1529 } 1530 printf("\ndumping to dev %u,%u offset %ld\n", major(dumpdev), 1531 minor(dumpdev), dumplo); 1532 1533 psize = (*bdevsw[major(dumpdev)].d_psize)(dumpdev); 1534 printf("dump "); 1535 if (psize == -1) { 1536 printf("area unavailable\n"); 1537 return; 1538 } 1539 1540 /* XXX should purge all outstanding keystrokes. */ 1541 1542 if ((error = cpu_dump()) != 0) 1543 goto err; 1544 1545 totalbytesleft = ptoa(cpu_dump_mempagecnt()); 1546 blkno = dumplo + cpu_dumpsize(); 1547 dump = bdevsw[major(dumpdev)].d_dump; 1548 error = 0; 1549 1550 for (memcl = 0; memcl < mem_cluster_cnt; memcl++) { 1551 maddr = mem_clusters[memcl].start; 1552 bytes = mem_clusters[memcl].size & ~PAGE_MASK; 1553 1554 for (i = 0; i < bytes; i += n, totalbytesleft -= n) { 1555 1556 /* Print out how many MBs we to go. */ 1557 if ((totalbytesleft % (1024*1024)) == 0) 1558 printf("%d ", totalbytesleft / (1024 * 1024)); 1559 1560 /* Limit size for next transfer. */ 1561 n = bytes - i; 1562 if (n > BYTES_PER_DUMP) 1563 n = BYTES_PER_DUMP; 1564 1565 error = (*dump)(dumpdev, blkno, 1566 (caddr_t)ALPHA_PHYS_TO_K0SEG(maddr), n); 1567 if (error) 1568 goto err; 1569 maddr += n; 1570 blkno += btodb(n); /* XXX? */ 1571 1572 /* XXX should look for keystrokes, to cancel. */ 1573 } 1574 } 1575 1576 err: 1577 switch (error) { 1578 1579 case ENXIO: 1580 printf("device bad\n"); 1581 break; 1582 1583 case EFAULT: 1584 printf("device not ready\n"); 1585 break; 1586 1587 case EINVAL: 1588 printf("area improper\n"); 1589 break; 1590 1591 case EIO: 1592 printf("i/o error\n"); 1593 break; 1594 1595 case EINTR: 1596 printf("aborted from console\n"); 1597 break; 1598 1599 case 0: 1600 printf("succeeded\n"); 1601 break; 1602 1603 default: 1604 printf("error %d\n", error); 1605 break; 1606 } 1607 printf("\n\n"); 1608 delay(1000); 1609 } 1610 1611 void 1612 frametoreg(framep, regp) 1613 struct trapframe *framep; 1614 struct reg *regp; 1615 { 1616 1617 regp->r_regs[R_V0] = framep->tf_regs[FRAME_V0]; 1618 regp->r_regs[R_T0] = framep->tf_regs[FRAME_T0]; 1619 regp->r_regs[R_T1] = framep->tf_regs[FRAME_T1]; 1620 regp->r_regs[R_T2] = framep->tf_regs[FRAME_T2]; 1621 regp->r_regs[R_T3] = framep->tf_regs[FRAME_T3]; 1622 regp->r_regs[R_T4] = framep->tf_regs[FRAME_T4]; 1623 regp->r_regs[R_T5] = framep->tf_regs[FRAME_T5]; 1624 regp->r_regs[R_T6] = framep->tf_regs[FRAME_T6]; 1625 regp->r_regs[R_T7] = framep->tf_regs[FRAME_T7]; 1626 regp->r_regs[R_S0] = framep->tf_regs[FRAME_S0]; 1627 regp->r_regs[R_S1] = framep->tf_regs[FRAME_S1]; 1628 regp->r_regs[R_S2] = framep->tf_regs[FRAME_S2]; 1629 regp->r_regs[R_S3] = framep->tf_regs[FRAME_S3]; 1630 regp->r_regs[R_S4] = framep->tf_regs[FRAME_S4]; 1631 regp->r_regs[R_S5] = framep->tf_regs[FRAME_S5]; 1632 regp->r_regs[R_S6] = framep->tf_regs[FRAME_S6]; 1633 regp->r_regs[R_A0] = framep->tf_regs[FRAME_A0]; 1634 regp->r_regs[R_A1] = framep->tf_regs[FRAME_A1]; 1635 regp->r_regs[R_A2] = framep->tf_regs[FRAME_A2]; 1636 regp->r_regs[R_A3] = framep->tf_regs[FRAME_A3]; 1637 regp->r_regs[R_A4] = framep->tf_regs[FRAME_A4]; 1638 regp->r_regs[R_A5] = framep->tf_regs[FRAME_A5]; 1639 regp->r_regs[R_T8] = framep->tf_regs[FRAME_T8]; 1640 regp->r_regs[R_T9] = framep->tf_regs[FRAME_T9]; 1641 regp->r_regs[R_T10] = framep->tf_regs[FRAME_T10]; 1642 regp->r_regs[R_T11] = framep->tf_regs[FRAME_T11]; 1643 regp->r_regs[R_RA] = framep->tf_regs[FRAME_RA]; 1644 regp->r_regs[R_T12] = framep->tf_regs[FRAME_T12]; 1645 regp->r_regs[R_AT] = framep->tf_regs[FRAME_AT]; 1646 regp->r_regs[R_GP] = framep->tf_regs[FRAME_GP]; 1647 /* regp->r_regs[R_SP] = framep->tf_regs[FRAME_SP]; XXX */ 1648 regp->r_regs[R_ZERO] = 0; 1649 } 1650 1651 void 1652 regtoframe(regp, framep) 1653 struct reg *regp; 1654 struct trapframe *framep; 1655 { 1656 1657 framep->tf_regs[FRAME_V0] = regp->r_regs[R_V0]; 1658 framep->tf_regs[FRAME_T0] = regp->r_regs[R_T0]; 1659 framep->tf_regs[FRAME_T1] = regp->r_regs[R_T1]; 1660 framep->tf_regs[FRAME_T2] = regp->r_regs[R_T2]; 1661 framep->tf_regs[FRAME_T3] = regp->r_regs[R_T3]; 1662 framep->tf_regs[FRAME_T4] = regp->r_regs[R_T4]; 1663 framep->tf_regs[FRAME_T5] = regp->r_regs[R_T5]; 1664 framep->tf_regs[FRAME_T6] = regp->r_regs[R_T6]; 1665 framep->tf_regs[FRAME_T7] = regp->r_regs[R_T7]; 1666 framep->tf_regs[FRAME_S0] = regp->r_regs[R_S0]; 1667 framep->tf_regs[FRAME_S1] = regp->r_regs[R_S1]; 1668 framep->tf_regs[FRAME_S2] = regp->r_regs[R_S2]; 1669 framep->tf_regs[FRAME_S3] = regp->r_regs[R_S3]; 1670 framep->tf_regs[FRAME_S4] = regp->r_regs[R_S4]; 1671 framep->tf_regs[FRAME_S5] = regp->r_regs[R_S5]; 1672 framep->tf_regs[FRAME_S6] = regp->r_regs[R_S6]; 1673 framep->tf_regs[FRAME_A0] = regp->r_regs[R_A0]; 1674 framep->tf_regs[FRAME_A1] = regp->r_regs[R_A1]; 1675 framep->tf_regs[FRAME_A2] = regp->r_regs[R_A2]; 1676 framep->tf_regs[FRAME_A3] = regp->r_regs[R_A3]; 1677 framep->tf_regs[FRAME_A4] = regp->r_regs[R_A4]; 1678 framep->tf_regs[FRAME_A5] = regp->r_regs[R_A5]; 1679 framep->tf_regs[FRAME_T8] = regp->r_regs[R_T8]; 1680 framep->tf_regs[FRAME_T9] = regp->r_regs[R_T9]; 1681 framep->tf_regs[FRAME_T10] = regp->r_regs[R_T10]; 1682 framep->tf_regs[FRAME_T11] = regp->r_regs[R_T11]; 1683 framep->tf_regs[FRAME_RA] = regp->r_regs[R_RA]; 1684 framep->tf_regs[FRAME_T12] = regp->r_regs[R_T12]; 1685 framep->tf_regs[FRAME_AT] = regp->r_regs[R_AT]; 1686 framep->tf_regs[FRAME_GP] = regp->r_regs[R_GP]; 1687 /* framep->tf_regs[FRAME_SP] = regp->r_regs[R_SP]; XXX */ 1688 /* ??? = regp->r_regs[R_ZERO]; */ 1689 } 1690 1691 void 1692 printregs(regp) 1693 struct reg *regp; 1694 { 1695 int i; 1696 1697 for (i = 0; i < 32; i++) 1698 printf("R%d:\t0x%016lx%s", i, regp->r_regs[i], 1699 i & 1 ? "\n" : "\t"); 1700 } 1701 1702 void 1703 regdump(framep) 1704 struct trapframe *framep; 1705 { 1706 struct reg reg; 1707 1708 frametoreg(framep, ®); 1709 reg.r_regs[R_SP] = alpha_pal_rdusp(); 1710 1711 printf("REGISTERS:\n"); 1712 printregs(®); 1713 } 1714 1715 #ifdef DEBUG 1716 int sigdebug = 0; 1717 int sigpid = 0; 1718 #define SDB_FOLLOW 0x01 1719 #define SDB_KSTACK 0x02 1720 #endif 1721 1722 /* 1723 * Send an interrupt to process. 1724 */ 1725 void 1726 sendsig(catcher, sig, mask, code) 1727 sig_t catcher; 1728 int sig; 1729 sigset_t *mask; 1730 u_long code; 1731 { 1732 struct proc *p = curproc; 1733 struct sigcontext *scp, ksc; 1734 struct trapframe *frame; 1735 struct sigacts *psp = p->p_sigacts; 1736 int onstack, fsize, rndfsize; 1737 extern struct proc *fpcurproc; 1738 1739 frame = p->p_md.md_tf; 1740 1741 /* Do we need to jump onto the signal stack? */ 1742 onstack = 1743 (psp->ps_sigstk.ss_flags & (SS_DISABLE | SS_ONSTACK)) == 0 && 1744 (psp->ps_sigact[sig].sa_flags & SA_ONSTACK) != 0; 1745 1746 /* Allocate space for the signal handler context. */ 1747 fsize = sizeof(ksc); 1748 rndfsize = ((fsize + 15) / 16) * 16; 1749 1750 if (onstack) 1751 scp = (struct sigcontext *)((caddr_t)psp->ps_sigstk.ss_sp + 1752 psp->ps_sigstk.ss_size); 1753 else 1754 scp = (struct sigcontext *)(alpha_pal_rdusp()); 1755 scp = (struct sigcontext *)((caddr_t)scp - rndfsize); 1756 1757 #ifdef DEBUG 1758 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1759 printf("sendsig(%d): sig %d ssp %p usp %p\n", p->p_pid, 1760 sig, &onstack, scp); 1761 #endif 1762 1763 /* Build stack frame for signal trampoline. */ 1764 ksc.sc_pc = frame->tf_regs[FRAME_PC]; 1765 ksc.sc_ps = frame->tf_regs[FRAME_PS]; 1766 1767 /* Save register context. */ 1768 frametoreg(frame, (struct reg *)ksc.sc_regs); 1769 ksc.sc_regs[R_ZERO] = 0xACEDBADE; /* magic number */ 1770 ksc.sc_regs[R_SP] = alpha_pal_rdusp(); 1771 1772 /* save the floating-point state, if necessary, then copy it. */ 1773 if (p == fpcurproc) { 1774 alpha_pal_wrfen(1); 1775 savefpstate(&p->p_addr->u_pcb.pcb_fp); 1776 alpha_pal_wrfen(0); 1777 fpcurproc = NULL; 1778 } 1779 ksc.sc_ownedfp = p->p_md.md_flags & MDP_FPUSED; 1780 bcopy(&p->p_addr->u_pcb.pcb_fp, (struct fpreg *)ksc.sc_fpregs, 1781 sizeof(struct fpreg)); 1782 ksc.sc_fp_control = 0; /* XXX ? */ 1783 bzero(ksc.sc_reserved, sizeof ksc.sc_reserved); /* XXX */ 1784 bzero(ksc.sc_xxx, sizeof ksc.sc_xxx); /* XXX */ 1785 1786 /* Save signal stack. */ 1787 ksc.sc_onstack = psp->ps_sigstk.ss_flags & SS_ONSTACK; 1788 1789 /* Save signal mask. */ 1790 ksc.sc_mask = *mask; 1791 1792 #ifdef COMPAT_13 1793 /* 1794 * XXX We always have to save an old style signal mask because 1795 * XXX we might be delivering a signal to a process which will 1796 * XXX escape from the signal in a non-standard way and invoke 1797 * XXX sigreturn() directly. 1798 */ 1799 { 1800 /* Note: it's a long in the stack frame. */ 1801 sigset13_t mask13; 1802 1803 native_sigset_to_sigset13(mask, &mask13); 1804 ksc.__sc_mask13 = mask13; 1805 } 1806 #endif 1807 1808 #ifdef COMPAT_OSF1 1809 /* 1810 * XXX Create an OSF/1-style sigcontext and associated goo. 1811 */ 1812 #endif 1813 1814 if (copyout(&ksc, (caddr_t)scp, fsize) != 0) { 1815 /* 1816 * Process has trashed its stack; give it an illegal 1817 * instruction to halt it in its tracks. 1818 */ 1819 #ifdef DEBUG 1820 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1821 printf("sendsig(%d): copyout failed on sig %d\n", 1822 p->p_pid, sig); 1823 #endif 1824 sigexit(p, SIGILL); 1825 /* NOTREACHED */ 1826 } 1827 #ifdef DEBUG 1828 if (sigdebug & SDB_FOLLOW) 1829 printf("sendsig(%d): sig %d scp %p code %lx\n", p->p_pid, sig, 1830 scp, code); 1831 #endif 1832 1833 /* Set up the registers to return to sigcode. */ 1834 frame->tf_regs[FRAME_PC] = (u_int64_t)psp->ps_sigcode; 1835 frame->tf_regs[FRAME_A0] = sig; 1836 frame->tf_regs[FRAME_A1] = code; 1837 frame->tf_regs[FRAME_A2] = (u_int64_t)scp; 1838 frame->tf_regs[FRAME_T12] = (u_int64_t)catcher; /* t12 is pv */ 1839 alpha_pal_wrusp((unsigned long)scp); 1840 1841 /* Remember that we're now on the signal stack. */ 1842 if (onstack) 1843 psp->ps_sigstk.ss_flags |= SS_ONSTACK; 1844 1845 #ifdef DEBUG 1846 if (sigdebug & SDB_FOLLOW) 1847 printf("sendsig(%d): pc %lx, catcher %lx\n", p->p_pid, 1848 frame->tf_regs[FRAME_PC], frame->tf_regs[FRAME_A3]); 1849 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1850 printf("sendsig(%d): sig %d returns\n", 1851 p->p_pid, sig); 1852 #endif 1853 } 1854 1855 /* 1856 * System call to cleanup state after a signal 1857 * has been taken. Reset signal mask and 1858 * stack state from context left by sendsig (above). 1859 * Return to previous pc and psl as specified by 1860 * context left by sendsig. Check carefully to 1861 * make sure that the user has not modified the 1862 * psl to gain improper priviledges or to cause 1863 * a machine fault. 1864 */ 1865 /* ARGSUSED */ 1866 int 1867 sys___sigreturn14(p, v, retval) 1868 struct proc *p; 1869 void *v; 1870 register_t *retval; 1871 { 1872 struct sys___sigreturn14_args /* { 1873 syscallarg(struct sigcontext *) sigcntxp; 1874 } */ *uap = v; 1875 struct sigcontext *scp, ksc; 1876 extern struct proc *fpcurproc; 1877 1878 /* 1879 * The trampoline code hands us the context. 1880 * It is unsafe to keep track of it ourselves, in the event that a 1881 * program jumps out of a signal handler. 1882 */ 1883 scp = SCARG(uap, sigcntxp); 1884 #ifdef DEBUG 1885 if (sigdebug & SDB_FOLLOW) 1886 printf("sigreturn: pid %d, scp %p\n", p->p_pid, scp); 1887 #endif 1888 if (ALIGN(scp) != (u_int64_t)scp) 1889 return (EINVAL); 1890 1891 if (copyin((caddr_t)scp, &ksc, sizeof(ksc)) != 0) 1892 return (EFAULT); 1893 1894 if (ksc.sc_regs[R_ZERO] != 0xACEDBADE) /* magic number */ 1895 return (EINVAL); 1896 1897 /* Restore register context. */ 1898 p->p_md.md_tf->tf_regs[FRAME_PC] = ksc.sc_pc; 1899 p->p_md.md_tf->tf_regs[FRAME_PS] = 1900 (ksc.sc_ps | ALPHA_PSL_USERSET) & ~ALPHA_PSL_USERCLR; 1901 1902 regtoframe((struct reg *)ksc.sc_regs, p->p_md.md_tf); 1903 alpha_pal_wrusp(ksc.sc_regs[R_SP]); 1904 1905 /* XXX ksc.sc_ownedfp ? */ 1906 if (p == fpcurproc) 1907 fpcurproc = NULL; 1908 bcopy((struct fpreg *)ksc.sc_fpregs, &p->p_addr->u_pcb.pcb_fp, 1909 sizeof(struct fpreg)); 1910 /* XXX ksc.sc_fp_control ? */ 1911 1912 /* Restore signal stack. */ 1913 if (ksc.sc_onstack & SS_ONSTACK) 1914 p->p_sigacts->ps_sigstk.ss_flags |= SS_ONSTACK; 1915 else 1916 p->p_sigacts->ps_sigstk.ss_flags &= ~SS_ONSTACK; 1917 1918 /* Restore signal mask. */ 1919 (void) sigprocmask1(p, SIG_SETMASK, &ksc.sc_mask, 0); 1920 1921 #ifdef DEBUG 1922 if (sigdebug & SDB_FOLLOW) 1923 printf("sigreturn(%d): returns\n", p->p_pid); 1924 #endif 1925 return (EJUSTRETURN); 1926 } 1927 1928 /* 1929 * machine dependent system variables. 1930 */ 1931 int 1932 cpu_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 1933 int *name; 1934 u_int namelen; 1935 void *oldp; 1936 size_t *oldlenp; 1937 void *newp; 1938 size_t newlen; 1939 struct proc *p; 1940 { 1941 dev_t consdev; 1942 1943 /* all sysctl names at this level are terminal */ 1944 if (namelen != 1) 1945 return (ENOTDIR); /* overloaded */ 1946 1947 switch (name[0]) { 1948 case CPU_CONSDEV: 1949 if (cn_tab != NULL) 1950 consdev = cn_tab->cn_dev; 1951 else 1952 consdev = NODEV; 1953 return (sysctl_rdstruct(oldp, oldlenp, newp, &consdev, 1954 sizeof consdev)); 1955 1956 case CPU_ROOT_DEVICE: 1957 return (sysctl_rdstring(oldp, oldlenp, newp, 1958 root_device->dv_xname)); 1959 1960 case CPU_UNALIGNED_PRINT: 1961 return (sysctl_int(oldp, oldlenp, newp, newlen, 1962 &alpha_unaligned_print)); 1963 1964 case CPU_UNALIGNED_FIX: 1965 return (sysctl_int(oldp, oldlenp, newp, newlen, 1966 &alpha_unaligned_fix)); 1967 1968 case CPU_UNALIGNED_SIGBUS: 1969 return (sysctl_int(oldp, oldlenp, newp, newlen, 1970 &alpha_unaligned_sigbus)); 1971 1972 case CPU_BOOTED_KERNEL: 1973 return (sysctl_rdstring(oldp, oldlenp, newp, 1974 bootinfo.booted_kernel)); 1975 1976 default: 1977 return (EOPNOTSUPP); 1978 } 1979 /* NOTREACHED */ 1980 } 1981 1982 /* 1983 * Set registers on exec. 1984 */ 1985 void 1986 setregs(p, pack, stack) 1987 register struct proc *p; 1988 struct exec_package *pack; 1989 u_long stack; 1990 { 1991 struct trapframe *tfp = p->p_md.md_tf; 1992 extern struct proc *fpcurproc; 1993 #ifdef DEBUG 1994 int i; 1995 #endif 1996 1997 #ifdef DEBUG 1998 /* 1999 * Crash and dump, if the user requested it. 2000 */ 2001 if (boothowto & RB_DUMP) 2002 panic("crash requested by boot flags"); 2003 #endif 2004 2005 #ifdef DEBUG 2006 for (i = 0; i < FRAME_SIZE; i++) 2007 tfp->tf_regs[i] = 0xbabefacedeadbeef; 2008 #else 2009 bzero(tfp->tf_regs, FRAME_SIZE * sizeof tfp->tf_regs[0]); 2010 #endif 2011 bzero(&p->p_addr->u_pcb.pcb_fp, sizeof p->p_addr->u_pcb.pcb_fp); 2012 #define FP_RN 2 /* XXX */ 2013 p->p_addr->u_pcb.pcb_fp.fpr_cr = (long)FP_RN << 58; 2014 alpha_pal_wrusp(stack); 2015 tfp->tf_regs[FRAME_PS] = ALPHA_PSL_USERSET; 2016 tfp->tf_regs[FRAME_PC] = pack->ep_entry & ~3; 2017 2018 tfp->tf_regs[FRAME_A0] = stack; /* a0 = sp */ 2019 tfp->tf_regs[FRAME_A1] = 0; /* a1 = rtld cleanup */ 2020 tfp->tf_regs[FRAME_A2] = 0; /* a2 = rtld object */ 2021 tfp->tf_regs[FRAME_A3] = (u_int64_t)PS_STRINGS; /* a3 = ps_strings */ 2022 tfp->tf_regs[FRAME_T12] = tfp->tf_regs[FRAME_PC]; /* a.k.a. PV */ 2023 2024 p->p_md.md_flags &= ~MDP_FPUSED; 2025 if (fpcurproc == p) 2026 fpcurproc = NULL; 2027 } 2028 2029 void 2030 netintr() 2031 { 2032 int n, s; 2033 2034 s = splhigh(); 2035 n = netisr; 2036 netisr = 0; 2037 splx(s); 2038 2039 #define DONETISR(bit, fn) \ 2040 do { \ 2041 if (n & (1 << (bit))) \ 2042 fn; \ 2043 } while (0) 2044 2045 #ifdef INET 2046 #if NARP > 0 2047 DONETISR(NETISR_ARP, arpintr()); 2048 #endif 2049 DONETISR(NETISR_IP, ipintr()); 2050 #endif 2051 #ifdef NETATALK 2052 DONETISR(NETISR_ATALK, atintr()); 2053 #endif 2054 #ifdef NS 2055 DONETISR(NETISR_NS, nsintr()); 2056 #endif 2057 #ifdef ISO 2058 DONETISR(NETISR_ISO, clnlintr()); 2059 #endif 2060 #ifdef CCITT 2061 DONETISR(NETISR_CCITT, ccittintr()); 2062 #endif 2063 #ifdef NATM 2064 DONETISR(NETISR_NATM, natmintr()); 2065 #endif 2066 #if NPPP > 1 2067 DONETISR(NETISR_PPP, pppintr()); 2068 #endif 2069 2070 #undef DONETISR 2071 } 2072 2073 void 2074 do_sir() 2075 { 2076 u_int64_t n; 2077 2078 do { 2079 (void)splhigh(); 2080 n = ssir; 2081 ssir = 0; 2082 splsoft(); /* don't recurse through spl0() */ 2083 2084 #if defined(UVM) 2085 #define COUNT_SOFT uvmexp.softs++ 2086 #else 2087 #define COUNT_SOFT cnt.v_soft++ 2088 #endif 2089 2090 #define DO_SIR(bit, fn) \ 2091 do { \ 2092 if (n & (bit)) { \ 2093 COUNT_SOFT; \ 2094 fn; \ 2095 } \ 2096 } while (0) 2097 2098 DO_SIR(SIR_NET, netintr()); 2099 DO_SIR(SIR_CLOCK, softclock()); 2100 #if NCOM > 0 2101 DO_SIR(SIR_SERIAL, comsoft()); 2102 #endif 2103 2104 #undef COUNT_SOFT 2105 #undef DO_SIR 2106 } while (ssir != 0); 2107 } 2108 2109 int 2110 spl0() 2111 { 2112 2113 if (ssir) 2114 do_sir(); /* it lowers the IPL itself */ 2115 2116 return (alpha_pal_swpipl(ALPHA_PSL_IPL_0)); 2117 } 2118 2119 /* 2120 * The following primitives manipulate the run queues. _whichqs tells which 2121 * of the 32 queues _qs have processes in them. Setrunqueue puts processes 2122 * into queues, Remrunqueue removes them from queues. The running process is 2123 * on no queue, other processes are on a queue related to p->p_priority, 2124 * divided by 4 actually to shrink the 0-127 range of priorities into the 32 2125 * available queues. 2126 */ 2127 /* 2128 * setrunqueue(p) 2129 * proc *p; 2130 * 2131 * Call should be made at splclock(), and p->p_stat should be SRUN. 2132 */ 2133 2134 void 2135 setrunqueue(p) 2136 struct proc *p; 2137 { 2138 int bit; 2139 2140 /* firewall: p->p_back must be NULL */ 2141 if (p->p_back != NULL) 2142 panic("setrunqueue"); 2143 2144 bit = p->p_priority >> 2; 2145 whichqs |= (1 << bit); 2146 p->p_forw = (struct proc *)&qs[bit]; 2147 p->p_back = qs[bit].ph_rlink; 2148 p->p_back->p_forw = p; 2149 qs[bit].ph_rlink = p; 2150 } 2151 2152 /* 2153 * remrunqueue(p) 2154 * 2155 * Call should be made at splclock(). 2156 */ 2157 void 2158 remrunqueue(p) 2159 struct proc *p; 2160 { 2161 int bit; 2162 2163 bit = p->p_priority >> 2; 2164 if ((whichqs & (1 << bit)) == 0) 2165 panic("remrunqueue"); 2166 2167 p->p_back->p_forw = p->p_forw; 2168 p->p_forw->p_back = p->p_back; 2169 p->p_back = NULL; /* for firewall checking. */ 2170 2171 if ((struct proc *)&qs[bit] == qs[bit].ph_link) 2172 whichqs &= ~(1 << bit); 2173 } 2174 2175 /* 2176 * Return the best possible estimate of the time in the timeval 2177 * to which tvp points. Unfortunately, we can't read the hardware registers. 2178 * We guarantee that the time will be greater than the value obtained by a 2179 * previous call. 2180 */ 2181 void 2182 microtime(tvp) 2183 register struct timeval *tvp; 2184 { 2185 int s = splclock(); 2186 static struct timeval lasttime; 2187 2188 *tvp = time; 2189 #ifdef notdef 2190 tvp->tv_usec += clkread(); 2191 while (tvp->tv_usec > 1000000) { 2192 tvp->tv_sec++; 2193 tvp->tv_usec -= 1000000; 2194 } 2195 #endif 2196 if (tvp->tv_sec == lasttime.tv_sec && 2197 tvp->tv_usec <= lasttime.tv_usec && 2198 (tvp->tv_usec = lasttime.tv_usec + 1) > 1000000) { 2199 tvp->tv_sec++; 2200 tvp->tv_usec -= 1000000; 2201 } 2202 lasttime = *tvp; 2203 splx(s); 2204 } 2205 2206 /* 2207 * Wait "n" microseconds. 2208 */ 2209 void 2210 delay(n) 2211 unsigned long n; 2212 { 2213 long N = cycles_per_usec * (n); 2214 2215 while (N > 0) /* XXX */ 2216 N -= 3; /* XXX */ 2217 } 2218 2219 #if defined(COMPAT_OSF1) || 1 /* XXX */ 2220 void cpu_exec_ecoff_setregs __P((struct proc *, struct exec_package *, 2221 u_long)); 2222 2223 void 2224 cpu_exec_ecoff_setregs(p, epp, stack) 2225 struct proc *p; 2226 struct exec_package *epp; 2227 u_long stack; 2228 { 2229 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2230 2231 setregs(p, epp, stack); 2232 p->p_md.md_tf->tf_regs[FRAME_GP] = execp->a.gp_value; 2233 } 2234 2235 /* 2236 * cpu_exec_ecoff_hook(): 2237 * cpu-dependent ECOFF format hook for execve(). 2238 * 2239 * Do any machine-dependent diddling of the exec package when doing ECOFF. 2240 * 2241 */ 2242 int 2243 cpu_exec_ecoff_hook(p, epp) 2244 struct proc *p; 2245 struct exec_package *epp; 2246 { 2247 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2248 extern struct emul emul_netbsd; 2249 #ifdef COMPAT_OSF1 2250 extern struct emul emul_osf1; 2251 #endif 2252 2253 switch (execp->f.f_magic) { 2254 #ifdef COMPAT_OSF1 2255 case ECOFF_MAGIC_ALPHA: 2256 epp->ep_emul = &emul_osf1; 2257 break; 2258 #endif 2259 2260 case ECOFF_MAGIC_NETBSD_ALPHA: 2261 epp->ep_emul = &emul_netbsd; 2262 break; 2263 2264 default: 2265 return ENOEXEC; 2266 } 2267 return 0; 2268 } 2269 #endif 2270 2271 int 2272 alpha_pa_access(pa) 2273 u_long pa; 2274 { 2275 int i; 2276 2277 for (i = 0; i < mem_cluster_cnt; i++) { 2278 if (pa < mem_clusters[i].start) 2279 continue; 2280 if ((pa - mem_clusters[i].start) >= 2281 (mem_clusters[i].size & ~PAGE_MASK)) 2282 continue; 2283 return (mem_clusters[i].size & PAGE_MASK); /* prot */ 2284 } 2285 return (PROT_NONE); 2286 } 2287 2288 /* XXX XXX BEGIN XXX XXX */ 2289 paddr_t alpha_XXX_dmamap_or; /* XXX */ 2290 /* XXX */ 2291 paddr_t /* XXX */ 2292 alpha_XXX_dmamap(v) /* XXX */ 2293 vaddr_t v; /* XXX */ 2294 { /* XXX */ 2295 /* XXX */ 2296 return (vtophys(v) | alpha_XXX_dmamap_or); /* XXX */ 2297 } /* XXX */ 2298 /* XXX XXX END XXX XXX */ 2299 2300 struct mchkinfo * 2301 cpu_mchkinfo() 2302 { 2303 if (mchkinfo_all_cpus == NULL) 2304 return &startup_info; 2305 return mchkinfo_all_cpus + alpha_pal_whami(); 2306 } 2307
Indexes created Mon Oct 13 16:09:52 GMT 2025