machdep.c revision 1.141
1 /* $NetBSD: machdep.c,v 1.141 1998/09/13 01:51:29 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_compat_netbsd.h" 74 #include "opt_inet.h" 75 #include "opt_atalk.h" 76 #include "opt_ccitt.h" 77 #include "opt_iso.h" 78 #include "opt_ns.h" 79 #include "opt_natm.h" 80 81 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 82 83 __KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.141 1998/09/13 01:51:29 thorpej Exp $"); 84 85 #include <sys/param.h> 86 #include <sys/systm.h> 87 #include <sys/signalvar.h> 88 #include <sys/kernel.h> 89 #include <sys/map.h> 90 #include <sys/proc.h> 91 #include <sys/buf.h> 92 #include <sys/reboot.h> 93 #include <sys/device.h> 94 #include <sys/file.h> 95 #ifdef REAL_CLISTS 96 #include <sys/clist.h> 97 #endif 98 #include <sys/callout.h> 99 #include <sys/malloc.h> 100 #include <sys/mbuf.h> 101 #include <sys/mman.h> 102 #include <sys/msgbuf.h> 103 #include <sys/ioctl.h> 104 #include <sys/tty.h> 105 #include <sys/user.h> 106 #include <sys/exec.h> 107 #include <sys/exec_ecoff.h> 108 #include <vm/vm.h> 109 #include <sys/sysctl.h> 110 #include <sys/core.h> 111 #include <sys/kcore.h> 112 #include <machine/kcore.h> 113 #ifdef SYSVMSG 114 #include <sys/msg.h> 115 #endif 116 #ifdef SYSVSEM 117 #include <sys/sem.h> 118 #endif 119 #ifdef SYSVSHM 120 #include <sys/shm.h> 121 #endif 122 123 #include <sys/mount.h> 124 #include <sys/syscallargs.h> 125 126 #include <vm/vm_kern.h> 127 128 #if defined(UVM) 129 #include <uvm/uvm_extern.h> 130 #endif 131 132 #include <dev/cons.h> 133 134 #include <machine/autoconf.h> 135 #include <machine/cpu.h> 136 #include <machine/reg.h> 137 #include <machine/rpb.h> 138 #include <machine/prom.h> 139 #include <machine/conf.h> 140 141 #include <net/netisr.h> 142 #include <net/if.h> 143 144 #ifdef INET 145 #include <net/route.h> 146 #include <netinet/in.h> 147 #include <netinet/ip_var.h> 148 #include "arp.h" 149 #if NARP > 0 150 #include <netinet/if_inarp.h> 151 #endif 152 #endif 153 #ifdef NS 154 #include <netns/ns_var.h> 155 #endif 156 #ifdef ISO 157 #include <netiso/iso.h> 158 #include <netiso/clnp.h> 159 #endif 160 #ifdef CCITT 161 #include <netccitt/x25.h> 162 #include <netccitt/pk.h> 163 #include <netccitt/pk_extern.h> 164 #endif 165 #ifdef NATM 166 #include <netnatm/natm.h> 167 #endif 168 #ifdef NETATALK 169 #include <netatalk/at_extern.h> 170 #endif 171 #include "ppp.h" 172 #if NPPP > 0 173 #include <net/ppp_defs.h> 174 #include <net/if_ppp.h> 175 #endif 176 177 #ifdef DDB 178 #include <machine/db_machdep.h> 179 #include <ddb/db_access.h> 180 #include <ddb/db_sym.h> 181 #include <ddb/db_extern.h> 182 #include <ddb/db_interface.h> 183 #endif 184 185 #if defined(UVM) 186 vm_map_t exec_map = NULL; 187 vm_map_t mb_map = NULL; 188 vm_map_t phys_map = NULL; 189 #else 190 vm_map_t buffer_map; 191 #endif 192 193 /* 194 * Declare these as initialized data so we can patch them. 195 */ 196 int nswbuf = 0; 197 #ifdef NBUF 198 int nbuf = NBUF; 199 #else 200 int nbuf = 0; 201 #endif 202 #ifdef BUFPAGES 203 int bufpages = BUFPAGES; 204 #else 205 int bufpages = 0; 206 #endif 207 caddr_t msgbufaddr; 208 209 int maxmem; /* max memory per process */ 210 211 int totalphysmem; /* total amount of physical memory in system */ 212 int physmem; /* physical memory used by NetBSD + some rsvd */ 213 int resvmem; /* amount of memory reserved for PROM */ 214 int unusedmem; /* amount of memory for OS that we don't use */ 215 int unknownmem; /* amount of memory with an unknown use */ 216 217 int cputype; /* system type, from the RPB */ 218 219 /* 220 * XXX We need an address to which we can assign things so that they 221 * won't be optimized away because we didn't use the value. 222 */ 223 u_int32_t no_optimize; 224 225 /* the following is used externally (sysctl_hw) */ 226 char machine[] = MACHINE; /* from <machine/param.h> */ 227 char machine_arch[] = MACHINE_ARCH; /* from <machine/param.h> */ 228 char cpu_model[128]; 229 230 struct user *proc0paddr; 231 232 /* Number of machine cycles per microsecond */ 233 u_int64_t cycles_per_usec; 234 235 /* number of cpus in the box. really! */ 236 int ncpus; 237 238 /* machine check info array, valloc()'ed in allocsys() */ 239 240 static struct mchkinfo startup_info, 241 *mchkinfo_all_cpus; 242 243 struct bootinfo_kernel bootinfo; 244 245 /* For built-in TCDS */ 246 #if defined(DEC_3000_300) || defined(DEC_3000_500) 247 u_int8_t dec_3000_scsiid[2], dec_3000_scsifast[2]; 248 #endif 249 250 struct platform platform; 251 252 u_int32_t vm_mbuf_size = _VM_MBUF_SIZE; 253 u_int32_t vm_kmem_size = _VM_KMEM_SIZE; 254 u_int32_t vm_phys_size = _VM_PHYS_SIZE; 255 256 #ifdef DDB 257 /* start and end of kernel symbol table */ 258 void *ksym_start, *ksym_end; 259 #endif 260 261 /* for cpu_sysctl() */ 262 int alpha_unaligned_print = 1; /* warn about unaligned accesses */ 263 int alpha_unaligned_fix = 1; /* fix up unaligned accesses */ 264 int alpha_unaligned_sigbus = 0; /* don't SIGBUS on fixed-up accesses */ 265 266 /* 267 * XXX This should be dynamically sized, but we have the chicken-egg problem! 268 * XXX it should also be larger than it is, because not all of the mddt 269 * XXX clusters end up being used for VM. 270 */ 271 phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX]; /* low size bits overloaded */ 272 int mem_cluster_cnt; 273 274 caddr_t allocsys __P((caddr_t)); 275 int cpu_dump __P((void)); 276 int cpu_dumpsize __P((void)); 277 u_long cpu_dump_mempagecnt __P((void)); 278 void dumpsys __P((void)); 279 void identifycpu __P((void)); 280 void netintr __P((void)); 281 void printregs __P((struct reg *)); 282 283 void 284 alpha_init(pfn, ptb, bim, bip, biv) 285 u_long pfn; /* first free PFN number */ 286 u_long ptb; /* PFN of current level 1 page table */ 287 u_long bim; /* bootinfo magic */ 288 u_long bip; /* bootinfo pointer */ 289 u_long biv; /* bootinfo version */ 290 { 291 extern char kernel_text[], _end[]; 292 struct mddt *mddtp; 293 struct mddt_cluster *memc; 294 int i, mddtweird; 295 struct vm_physseg *vps; 296 vaddr_t kernstart, kernend; 297 paddr_t kernstartpfn, kernendpfn, pfn0, pfn1; 298 vsize_t size; 299 char *p; 300 caddr_t v; 301 char *bootinfo_msg; 302 303 /* NO OUTPUT ALLOWED UNTIL FURTHER NOTICE */ 304 305 /* 306 * Turn off interrupts (not mchecks) and floating point. 307 * Make sure the instruction and data streams are consistent. 308 */ 309 (void)alpha_pal_swpipl(ALPHA_PSL_IPL_HIGH); 310 alpha_pal_wrfen(0); 311 ALPHA_TBIA(); 312 alpha_pal_imb(); 313 314 /* 315 * Get critical system information (if possible, from the 316 * information provided by the boot program). 317 */ 318 bootinfo_msg = NULL; 319 if (bim == BOOTINFO_MAGIC) { 320 if (biv == 0) { /* backward compat */ 321 biv = *(u_long *)bip; 322 bip += 8; 323 } 324 switch (biv) { 325 case 1: { 326 struct bootinfo_v1 *v1p = (struct bootinfo_v1 *)bip; 327 328 bootinfo.ssym = v1p->ssym; 329 bootinfo.esym = v1p->esym; 330 /* hwrpb may not be provided by boot block in v1 */ 331 if (v1p->hwrpb != NULL) { 332 bootinfo.hwrpb_phys = 333 ((struct rpb *)v1p->hwrpb)->rpb_phys; 334 bootinfo.hwrpb_size = v1p->hwrpbsize; 335 } else { 336 bootinfo.hwrpb_phys = 337 ((struct rpb *)HWRPB_ADDR)->rpb_phys; 338 bootinfo.hwrpb_size = 339 ((struct rpb *)HWRPB_ADDR)->rpb_size; 340 } 341 bcopy(v1p->boot_flags, bootinfo.boot_flags, 342 min(sizeof v1p->boot_flags, 343 sizeof bootinfo.boot_flags)); 344 bcopy(v1p->booted_kernel, bootinfo.booted_kernel, 345 min(sizeof v1p->booted_kernel, 346 sizeof bootinfo.booted_kernel)); 347 /* booted dev not provided in bootinfo */ 348 init_prom_interface((struct rpb *) 349 ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys)); 350 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 351 sizeof bootinfo.booted_dev); 352 break; 353 } 354 default: 355 bootinfo_msg = "unknown bootinfo version"; 356 goto nobootinfo; 357 } 358 } else { 359 bootinfo_msg = "boot program did not pass bootinfo"; 360 nobootinfo: 361 bootinfo.ssym = (u_long)_end; 362 bootinfo.esym = (u_long)_end; 363 bootinfo.hwrpb_phys = ((struct rpb *)HWRPB_ADDR)->rpb_phys; 364 bootinfo.hwrpb_size = ((struct rpb *)HWRPB_ADDR)->rpb_size; 365 init_prom_interface((struct rpb *)HWRPB_ADDR); 366 prom_getenv(PROM_E_BOOTED_OSFLAGS, bootinfo.boot_flags, 367 sizeof bootinfo.boot_flags); 368 prom_getenv(PROM_E_BOOTED_FILE, bootinfo.booted_kernel, 369 sizeof bootinfo.booted_kernel); 370 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 371 sizeof bootinfo.booted_dev); 372 } 373 374 /* 375 * Initialize the kernel's mapping of the RPB. It's needed for 376 * lots of things. 377 */ 378 hwrpb = (struct rpb *)ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys); 379 380 #if defined(DEC_3000_300) || defined(DEC_3000_500) 381 if (hwrpb->rpb_type == ST_DEC_3000_300 || 382 hwrpb->rpb_type == ST_DEC_3000_500) { 383 prom_getenv(PROM_E_SCSIID, dec_3000_scsiid, 384 sizeof(dec_3000_scsiid)); 385 prom_getenv(PROM_E_SCSIFAST, dec_3000_scsifast, 386 sizeof(dec_3000_scsifast)); 387 } 388 #endif 389 390 /* 391 * Remember how many cycles there are per microsecond, 392 * so that we can use delay(). Round up, for safety. 393 */ 394 cycles_per_usec = (hwrpb->rpb_cc_freq + 999999) / 1000000; 395 396 /* 397 * Initalize the (temporary) bootstrap console interface, so 398 * we can use printf until the VM system starts being setup. 399 * The real console is initialized before then. 400 */ 401 init_bootstrap_console(); 402 403 /* OUTPUT NOW ALLOWED */ 404 405 /* delayed from above */ 406 if (bootinfo_msg) 407 printf("WARNING: %s (0x%lx, 0x%lx, 0x%lx)\n", 408 bootinfo_msg, bim, bip, biv); 409 410 /* 411 * Point interrupt/exception vectors to our own. 412 */ 413 alpha_pal_wrent(XentInt, ALPHA_KENTRY_INT); 414 alpha_pal_wrent(XentArith, ALPHA_KENTRY_ARITH); 415 alpha_pal_wrent(XentMM, ALPHA_KENTRY_MM); 416 alpha_pal_wrent(XentIF, ALPHA_KENTRY_IF); 417 alpha_pal_wrent(XentUna, ALPHA_KENTRY_UNA); 418 alpha_pal_wrent(XentSys, ALPHA_KENTRY_SYS); 419 420 /* 421 * Clear pending machine checks and error reports, and enable 422 * system- and processor-correctable error reporting. 423 */ 424 alpha_pal_wrmces(alpha_pal_rdmces() & 425 ~(ALPHA_MCES_DSC|ALPHA_MCES_DPC)); 426 427 /* 428 * Find out what hardware we're on, and do basic initialization. 429 */ 430 cputype = hwrpb->rpb_type; 431 if (cputype >= ncpuinit) { 432 platform_not_supported(); 433 /* NOTREACHED */ 434 } 435 (*cpuinit[cputype].init)(); 436 strcpy(cpu_model, platform.model); 437 438 /* 439 * Initalize the real console, so the the bootstrap console is 440 * no longer necessary. 441 */ 442 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 443 if (!pmap_uses_prom_console()) 444 #endif 445 (*platform.cons_init)(); 446 447 #ifdef DIAGNOSTIC 448 /* Paranoid sanity checking */ 449 450 /* We should always be running on the the primary. */ 451 assert(hwrpb->rpb_primary_cpu_id == alpha_pal_whami()); 452 453 /* 454 * On single-CPU systypes, the primary should always be CPU 0, 455 * except on Alpha 8200 systems where the CPU id is related 456 * to the VID, which is related to the Turbo Laser node id. 457 */ 458 if (cputype != ST_DEC_21000) 459 assert(hwrpb->rpb_primary_cpu_id == 0); 460 #endif 461 462 /* NO MORE FIRMWARE ACCESS ALLOWED */ 463 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 464 /* 465 * XXX (unless _PMAP_MAY_USE_PROM_CONSOLE is defined and 466 * XXX pmap_uses_prom_console() evaluates to non-zero.) 467 */ 468 #endif 469 470 /* 471 * find out this system's page size 472 */ 473 PAGE_SIZE = hwrpb->rpb_page_size; 474 if (PAGE_SIZE != 8192) 475 panic("page size %d != 8192?!", PAGE_SIZE); 476 477 /* 478 * Initialize PAGE_SIZE-dependent variables. 479 */ 480 #if defined(UVM) 481 uvm_setpagesize(); 482 #else 483 vm_set_page_size(); 484 #endif 485 486 /* 487 * Find the beginning and end of the kernel (and leave a 488 * bit of space before the beginning for the bootstrap 489 * stack). 490 */ 491 kernstart = trunc_page(kernel_text) - 2 * PAGE_SIZE; 492 #ifdef DDB 493 ksym_start = (void *)bootinfo.ssym; 494 ksym_end = (void *)bootinfo.esym; 495 kernend = (vaddr_t)round_page(ksym_end); 496 #else 497 kernend = (vaddr_t)round_page(_end); 498 #endif 499 500 kernstartpfn = atop(ALPHA_K0SEG_TO_PHYS(kernstart)); 501 kernendpfn = atop(ALPHA_K0SEG_TO_PHYS(kernend)); 502 503 /* 504 * Find out how much memory is available, by looking at 505 * the memory cluster descriptors. This also tries to do 506 * its best to detect things things that have never been seen 507 * before... 508 */ 509 mddtp = (struct mddt *)(((caddr_t)hwrpb) + hwrpb->rpb_memdat_off); 510 511 /* MDDT SANITY CHECKING */ 512 mddtweird = 0; 513 if (mddtp->mddt_cluster_cnt < 2) { 514 mddtweird = 1; 515 printf("WARNING: weird number of mem clusters: %d\n", 516 mddtp->mddt_cluster_cnt); 517 } 518 519 #if 0 520 printf("Memory cluster count: %d\n", mddtp->mddt_cluster_cnt); 521 #endif 522 523 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 524 memc = &mddtp->mddt_clusters[i]; 525 #if 0 526 printf("MEMC %d: pfn 0x%lx cnt 0x%lx usage 0x%lx\n", i, 527 memc->mddt_pfn, memc->mddt_pg_cnt, memc->mddt_usage); 528 #endif 529 totalphysmem += memc->mddt_pg_cnt; 530 if (mem_cluster_cnt < VM_PHYSSEG_MAX) { /* XXX */ 531 mem_clusters[mem_cluster_cnt].start = 532 ptoa(memc->mddt_pfn); 533 mem_clusters[mem_cluster_cnt].size = 534 ptoa(memc->mddt_pg_cnt); 535 if (memc->mddt_usage & MDDT_mbz || 536 memc->mddt_usage & MDDT_NONVOLATILE || /* XXX */ 537 memc->mddt_usage & MDDT_PALCODE) 538 mem_clusters[mem_cluster_cnt].size |= 539 PROT_READ; 540 else 541 mem_clusters[mem_cluster_cnt].size |= 542 PROT_READ | PROT_WRITE | PROT_EXEC; 543 mem_cluster_cnt++; 544 } 545 546 if (memc->mddt_usage & MDDT_mbz) { 547 mddtweird = 1; 548 printf("WARNING: mem cluster %d has weird " 549 "usage 0x%lx\n", i, memc->mddt_usage); 550 unknownmem += memc->mddt_pg_cnt; 551 continue; 552 } 553 if (memc->mddt_usage & MDDT_NONVOLATILE) { 554 /* XXX should handle these... */ 555 printf("WARNING: skipping non-volatile mem " 556 "cluster %d\n", i); 557 unusedmem += memc->mddt_pg_cnt; 558 continue; 559 } 560 if (memc->mddt_usage & MDDT_PALCODE) { 561 resvmem += memc->mddt_pg_cnt; 562 continue; 563 } 564 565 /* 566 * We have a memory cluster available for system 567 * software use. We must determine if this cluster 568 * holds the kernel. 569 */ 570 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 571 /* 572 * XXX If the kernel uses the PROM console, we only use the 573 * XXX memory after the kernel in the first system segment, 574 * XXX to avoid clobbering prom mapping, data, etc. 575 */ 576 if (!pmap_uses_prom_console() || physmem == 0) { 577 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 578 physmem += memc->mddt_pg_cnt; 579 pfn0 = memc->mddt_pfn; 580 pfn1 = memc->mddt_pfn + memc->mddt_pg_cnt; 581 if (pfn0 <= kernstartpfn && kernendpfn <= pfn1) { 582 /* 583 * Must compute the location of the kernel 584 * within the segment. 585 */ 586 #if 0 587 printf("Cluster %d contains kernel\n", i); 588 #endif 589 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 590 if (!pmap_uses_prom_console()) { 591 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 592 if (pfn0 < kernstartpfn) { 593 /* 594 * There is a chunk before the kernel. 595 */ 596 #if 0 597 printf("Loading chunk before kernel: " 598 "0x%lx / 0x%lx\n", pfn0, kernstartpfn); 599 #endif 600 #if defined(UVM) 601 uvm_page_physload(pfn0, kernstartpfn, 602 pfn0, kernstartpfn, VM_FREELIST_DEFAULT); 603 #else 604 vm_page_physload(pfn0, kernstartpfn, 605 pfn0, kernstartpfn); 606 #endif 607 } 608 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 609 } 610 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 611 if (kernendpfn < pfn1) { 612 /* 613 * There is a chunk after the kernel. 614 */ 615 #if 0 616 printf("Loading chunk after kernel: " 617 "0x%lx / 0x%lx\n", kernendpfn, pfn1); 618 #endif 619 #if defined(UVM) 620 uvm_page_physload(kernendpfn, pfn1, 621 kernendpfn, pfn1, VM_FREELIST_DEFAULT); 622 #else 623 vm_page_physload(kernendpfn, pfn1, 624 kernendpfn, pfn1); 625 #endif 626 } 627 } else { 628 /* 629 * Just load this cluster as one chunk. 630 */ 631 #if 0 632 printf("Loading cluster %d: 0x%lx / 0x%lx\n", i, 633 pfn0, pfn1); 634 #endif 635 #if defined(UVM) 636 uvm_page_physload(pfn0, pfn1, pfn0, pfn1, 637 VM_FREELIST_DEFAULT); 638 #else 639 vm_page_physload(pfn0, pfn1, pfn0, pfn1); 640 #endif 641 } 642 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 643 } 644 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 645 } 646 647 /* 648 * Dump out the MDDT if it looks odd... 649 */ 650 if (mddtweird) { 651 printf("\n"); 652 printf("complete memory cluster information:\n"); 653 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 654 printf("mddt %d:\n", i); 655 printf("\tpfn %lx\n", 656 mddtp->mddt_clusters[i].mddt_pfn); 657 printf("\tcnt %lx\n", 658 mddtp->mddt_clusters[i].mddt_pg_cnt); 659 printf("\ttest %lx\n", 660 mddtp->mddt_clusters[i].mddt_pg_test); 661 printf("\tbva %lx\n", 662 mddtp->mddt_clusters[i].mddt_v_bitaddr); 663 printf("\tbpa %lx\n", 664 mddtp->mddt_clusters[i].mddt_p_bitaddr); 665 printf("\tbcksum %lx\n", 666 mddtp->mddt_clusters[i].mddt_bit_cksum); 667 printf("\tusage %lx\n", 668 mddtp->mddt_clusters[i].mddt_usage); 669 } 670 printf("\n"); 671 } 672 673 if (totalphysmem == 0) 674 panic("can't happen: system seems to have no memory!"); 675 676 #ifdef LIMITMEM 677 /* 678 * XXX Kludge so we can run on machines with memory larger 679 * XXX than 1G until all device drivers are converted to 680 * XXX use bus_dma. (Relies on the fact that vm_physmem 681 * XXX sorted in order of increasing addresses.) 682 */ 683 if (vm_physmem[vm_nphysseg - 1].end > atop(LIMITMEM * 1024 * 1024)) { 684 685 printf("******** LIMITING MEMORY TO %dMB **********\n", 686 LIMITMEM); 687 688 do { 689 u_long ovf; 690 691 vps = &vm_physmem[vm_nphysseg - 1]; 692 693 if (vps->start >= atop(LIMITMEM * 1024 * 1024)) { 694 /* 695 * If the start is too high, just drop 696 * the whole segment. 697 * 698 * XXX can start != avail_start in this 699 * XXX case? wouldn't that mean that 700 * XXX some memory was stolen above the 701 * XXX limit? What to do? 702 */ 703 ovf = vps->end - vps->start; 704 vm_nphysseg--; 705 } else { 706 /* 707 * If the start is OK, calculate how much 708 * to drop and drop it. 709 */ 710 ovf = vps->end - atop(LIMITMEM * 1024 * 1024); 711 vps->end -= ovf; 712 vps->avail_end -= ovf; 713 } 714 physmem -= ovf; 715 unusedmem += ovf; 716 } while (vps->end > atop(LIMITMEM * 1024 * 1024)); 717 } 718 #endif /* LIMITMEM */ 719 720 maxmem = physmem; 721 722 #if 0 723 printf("totalphysmem = %d\n", totalphysmem); 724 printf("physmem = %d\n", physmem); 725 printf("resvmem = %d\n", resvmem); 726 printf("unusedmem = %d\n", unusedmem); 727 printf("unknownmem = %d\n", unknownmem); 728 #endif 729 730 /* 731 * Adjust some parameters if the amount of physmem 732 * available would cause us to croak. This is completely 733 * eyeballed and isn't meant to be the final answer. 734 * vm_phys_size is probably the only one to really worry 735 * about. 736 * 737 * It's for booting a GENERIC kernel on a large memory platform. 738 */ 739 if (physmem >= atop(128 * 1024 * 1024)) { 740 vm_mbuf_size <<= 1; 741 vm_kmem_size <<= 3; 742 vm_phys_size <<= 2; 743 } 744 745 /* 746 * Initialize error message buffer (at end of core). 747 */ 748 { 749 size_t sz = round_page(MSGBUFSIZE); 750 751 vps = &vm_physmem[vm_nphysseg - 1]; 752 753 /* shrink so that it'll fit in the last segment */ 754 if ((vps->avail_end - vps->avail_start) < atop(sz)) 755 sz = ptoa(vps->avail_end - vps->avail_start); 756 757 vps->end -= atop(sz); 758 vps->avail_end -= atop(sz); 759 msgbufaddr = (caddr_t) ALPHA_PHYS_TO_K0SEG(ptoa(vps->end)); 760 initmsgbuf(msgbufaddr, sz); 761 762 /* Remove the last segment if it now has no pages. */ 763 if (vps->start == vps->end) 764 vm_nphysseg--; 765 766 /* warn if the message buffer had to be shrunk */ 767 if (sz != round_page(MSGBUFSIZE)) 768 printf("WARNING: %d bytes not available for msgbuf in last cluster (%d used)\n", 769 round_page(MSGBUFSIZE), sz); 770 771 } 772 773 /* 774 * Init mapping for u page(s) for proc 0 775 */ 776 proc0.p_addr = proc0paddr = 777 (struct user *)pmap_steal_memory(UPAGES * PAGE_SIZE, NULL, NULL); 778 779 /* 780 * Allocate space for system data structures. These data structures 781 * are allocated here instead of cpu_startup() because physical 782 * memory is directly addressable. We don't have to map these into 783 * virtual address space. 784 */ 785 size = (vsize_t)allocsys(0); 786 v = (caddr_t)pmap_steal_memory(size, NULL, NULL); 787 if ((allocsys(v) - v) != size) 788 panic("alpha_init: table size inconsistency"); 789 790 /* 791 * Initialize the virtual memory system, and set the 792 * page table base register in proc 0's PCB. 793 */ 794 pmap_bootstrap(ALPHA_PHYS_TO_K0SEG(ptb << PGSHIFT), 795 hwrpb->rpb_max_asn); 796 797 /* 798 * Initialize the rest of proc 0's PCB, and cache its physical 799 * address. 800 */ 801 proc0.p_md.md_pcbpaddr = 802 (struct pcb *)ALPHA_K0SEG_TO_PHYS((vaddr_t)&proc0paddr->u_pcb); 803 804 /* 805 * Set the kernel sp, reserving space for an (empty) trapframe, 806 * and make proc0's trapframe pointer point to it for sanity. 807 */ 808 proc0paddr->u_pcb.pcb_hw.apcb_ksp = 809 (u_int64_t)proc0paddr + USPACE - sizeof(struct trapframe); 810 proc0.p_md.md_tf = 811 (struct trapframe *)proc0paddr->u_pcb.pcb_hw.apcb_ksp; 812 813 /* 814 * Look at arguments passed to us and compute boothowto. 815 */ 816 817 boothowto = RB_SINGLE; 818 #ifdef KADB 819 boothowto |= RB_KDB; 820 #endif 821 for (p = bootinfo.boot_flags; p && *p != '\0'; p++) { 822 /* 823 * Note that we'd really like to differentiate case here, 824 * but the Alpha AXP Architecture Reference Manual 825 * says that we shouldn't. 826 */ 827 switch (*p) { 828 case 'a': /* autoboot */ 829 case 'A': 830 boothowto &= ~RB_SINGLE; 831 break; 832 833 #ifdef DEBUG 834 case 'c': /* crash dump immediately after autoconfig */ 835 case 'C': 836 boothowto |= RB_DUMP; 837 break; 838 #endif 839 840 #if defined(KGDB) || defined(DDB) 841 case 'd': /* break into the kernel debugger ASAP */ 842 case 'D': 843 boothowto |= RB_KDB; 844 break; 845 #endif 846 847 case 'h': /* always halt, never reboot */ 848 case 'H': 849 boothowto |= RB_HALT; 850 break; 851 852 #if 0 853 case 'm': /* mini root present in memory */ 854 case 'M': 855 boothowto |= RB_MINIROOT; 856 break; 857 #endif 858 859 case 'n': /* askname */ 860 case 'N': 861 boothowto |= RB_ASKNAME; 862 break; 863 864 case 's': /* single-user (default, supported for sanity) */ 865 case 'S': 866 boothowto |= RB_SINGLE; 867 break; 868 869 case '-': 870 /* 871 * Just ignore this. It's not required, but it's 872 * common for it to be passed regardless. 873 */ 874 break; 875 876 default: 877 printf("Unrecognized boot flag '%c'.\n", *p); 878 break; 879 } 880 } 881 882 883 /* 884 * Figure out the number of cpus in the box, from RPB fields. 885 * Really. We mean it. 886 */ 887 for (i = 0; i < hwrpb->rpb_pcs_cnt; i++) { 888 struct pcs *pcsp; 889 890 pcsp = (struct pcs *)((char *)hwrpb + hwrpb->rpb_pcs_off + 891 (i * hwrpb->rpb_pcs_size)); 892 if ((pcsp->pcs_flags & PCS_PP) != 0) 893 ncpus++; 894 } 895 896 /* 897 * Initialize debuggers, and break into them if appropriate. 898 */ 899 #ifdef DDB 900 db_machine_init(); 901 ddb_init(ksym_start, ksym_end); 902 if (boothowto & RB_KDB) 903 Debugger(); 904 #endif 905 #ifdef KGDB 906 if (boothowto & RB_KDB) 907 kgdb_connect(0); 908 #endif 909 /* 910 * Figure out our clock frequency, from RPB fields. 911 */ 912 hz = hwrpb->rpb_intr_freq >> 12; 913 if (!(60 <= hz && hz <= 10240)) { 914 hz = 1024; 915 #ifdef DIAGNOSTIC 916 printf("WARNING: unbelievable rpb_intr_freq: %ld (%d hz)\n", 917 hwrpb->rpb_intr_freq, hz); 918 #endif 919 } 920 } 921 922 /* 923 * Allocate space for system data structures. We are given 924 * a starting virtual address and we return a final virtual 925 * address; along the way we set each data structure pointer. 926 * 927 * We call allocsys() with 0 to find out how much space we want, 928 * allocate that much and fill it with zeroes, and the call 929 * allocsys() again with the correct base virtual address. 930 */ 931 caddr_t 932 allocsys(v) 933 caddr_t v; 934 { 935 936 #define valloc(name, type, num) \ 937 (name) = (type *)v; v = (caddr_t)ALIGN((name)+(num)) 938 939 #ifdef REAL_CLISTS 940 valloc(cfree, struct cblock, nclist); 941 #endif 942 valloc(callout, struct callout, ncallout); 943 #ifdef SYSVSHM 944 valloc(shmsegs, struct shmid_ds, shminfo.shmmni); 945 #endif 946 #ifdef SYSVSEM 947 valloc(sema, struct semid_ds, seminfo.semmni); 948 valloc(sem, struct sem, seminfo.semmns); 949 /* This is pretty disgusting! */ 950 valloc(semu, int, (seminfo.semmnu * seminfo.semusz) / sizeof(int)); 951 #endif 952 #ifdef SYSVMSG 953 valloc(msgpool, char, msginfo.msgmax); 954 valloc(msgmaps, struct msgmap, msginfo.msgseg); 955 valloc(msghdrs, struct msg, msginfo.msgtql); 956 valloc(msqids, struct msqid_ds, msginfo.msgmni); 957 #endif 958 959 /* 960 * Determine how many buffers to allocate. 961 * We allocate 10% of memory for buffer space. Insure a 962 * minimum of 16 buffers. We allocate 1/2 as many swap buffer 963 * headers as file i/o buffers. 964 */ 965 if (bufpages == 0) 966 bufpages = (physmem * 10) / (CLSIZE * 100); 967 if (nbuf == 0) { 968 nbuf = bufpages; 969 if (nbuf < 16) 970 nbuf = 16; 971 } 972 if (nswbuf == 0) { 973 nswbuf = (nbuf / 2) &~ 1; /* force even */ 974 if (nswbuf > 256) 975 nswbuf = 256; /* sanity */ 976 } 977 #if !defined(UVM) 978 valloc(swbuf, struct buf, nswbuf); 979 #endif 980 valloc(buf, struct buf, nbuf); 981 982 /* 983 * There appears to be a correlation between the number 984 * of processor slots defined in the HWRPB and the whami 985 * value that can be returned. 986 */ 987 valloc(mchkinfo_all_cpus, struct mchkinfo, hwrpb->rpb_pcs_cnt); 988 989 return (v); 990 #undef valloc 991 } 992 993 void 994 consinit() 995 { 996 997 /* 998 * Everything related to console initialization is done 999 * in alpha_init(). 1000 */ 1001 #if defined(DIAGNOSTIC) && defined(_PMAP_MAY_USE_PROM_CONSOLE) 1002 printf("consinit: %susing prom console\n", 1003 pmap_uses_prom_console() ? "" : "not "); 1004 #endif 1005 } 1006 1007 #include "pckbc.h" 1008 #include "pckbd.h" 1009 #if (NPCKBC > 0) && (NPCKBD == 0) 1010 1011 #include <machine/bus.h> 1012 #include <dev/isa/pckbcvar.h> 1013 1014 /* 1015 * This is called by the pbkbc driver if no pckbd is configured. 1016 * On the i386, it is used to glue in the old, deprecated console 1017 * code. On the Alpha, it does nothing. 1018 */ 1019 int 1020 pckbc_machdep_cnattach(kbctag, kbcslot) 1021 pckbc_tag_t kbctag; 1022 pckbc_slot_t kbcslot; 1023 { 1024 1025 return (ENXIO); 1026 } 1027 #endif /* NPCKBC > 0 && NPCKBD == 0 */ 1028 1029 void 1030 cpu_startup() 1031 { 1032 register unsigned i; 1033 int base, residual; 1034 vaddr_t minaddr, maxaddr; 1035 vsize_t size; 1036 #if defined(DEBUG) 1037 extern int pmapdebug; 1038 int opmapdebug = pmapdebug; 1039 1040 pmapdebug = 0; 1041 #endif 1042 1043 /* 1044 * Good {morning,afternoon,evening,night}. 1045 */ 1046 printf(version); 1047 identifycpu(); 1048 printf("real mem = %lu (%lu reserved for PROM, %lu used by NetBSD)\n", 1049 ((psize_t) totalphysmem << (psize_t) PAGE_SHIFT), 1050 ptoa(resvmem), ptoa(physmem)); 1051 if (unusedmem) 1052 printf("WARNING: unused memory = %d bytes\n", ctob(unusedmem)); 1053 if (unknownmem) 1054 printf("WARNING: %d bytes of memory with unknown purpose\n", 1055 ctob(unknownmem)); 1056 1057 /* 1058 * Allocate virtual address space for file I/O buffers. 1059 * Note they are different than the array of headers, 'buf', 1060 * and usually occupy more virtual memory than physical. 1061 */ 1062 size = MAXBSIZE * nbuf; 1063 #if defined(UVM) 1064 if (uvm_map(kernel_map, (vaddr_t *) &buffers, round_page(size), 1065 NULL, UVM_UNKNOWN_OFFSET, 1066 UVM_MAPFLAG(UVM_PROT_NONE, UVM_PROT_NONE, UVM_INH_NONE, 1067 UVM_ADV_NORMAL, 0)) != KERN_SUCCESS) 1068 panic("startup: cannot allocate VM for buffers"); 1069 #else 1070 buffer_map = kmem_suballoc(kernel_map, (vaddr_t *)&buffers, 1071 &maxaddr, size, TRUE); 1072 minaddr = (vaddr_t)buffers; 1073 if (vm_map_find(buffer_map, vm_object_allocate(size), (vaddr_t)0, 1074 &minaddr, size, FALSE) != KERN_SUCCESS) 1075 panic("startup: cannot allocate buffers"); 1076 #endif /* UVM */ 1077 base = bufpages / nbuf; 1078 residual = bufpages % nbuf; 1079 for (i = 0; i < nbuf; i++) { 1080 #if defined(UVM) 1081 vsize_t curbufsize; 1082 vaddr_t curbuf; 1083 struct vm_page *pg; 1084 1085 /* 1086 * Each buffer has MAXBSIZE bytes of VM space allocated. Of 1087 * that MAXBSIZE space, we allocate and map (base+1) pages 1088 * for the first "residual" buffers, and then we allocate 1089 * "base" pages for the rest. 1090 */ 1091 curbuf = (vaddr_t) buffers + (i * MAXBSIZE); 1092 curbufsize = CLBYTES * ((i < residual) ? (base+1) : base); 1093 1094 while (curbufsize) { 1095 pg = uvm_pagealloc(NULL, 0, NULL); 1096 if (pg == NULL) 1097 panic("cpu_startup: not enough memory for " 1098 "buffer cache"); 1099 #if defined(PMAP_NEW) 1100 pmap_kenter_pgs(curbuf, &pg, 1); 1101 #else 1102 pmap_enter(kernel_map->pmap, curbuf, 1103 VM_PAGE_TO_PHYS(pg), VM_PROT_ALL, TRUE); 1104 #endif 1105 curbuf += PAGE_SIZE; 1106 curbufsize -= PAGE_SIZE; 1107 } 1108 #else /* ! UVM */ 1109 vsize_t curbufsize; 1110 vaddr_t curbuf; 1111 1112 /* 1113 * First <residual> buffers get (base+1) physical pages 1114 * allocated for them. The rest get (base) physical pages. 1115 * 1116 * The rest of each buffer occupies virtual space, 1117 * but has no physical memory allocated for it. 1118 */ 1119 curbuf = (vaddr_t)buffers + i * MAXBSIZE; 1120 curbufsize = CLBYTES * (i < residual ? base+1 : base); 1121 vm_map_pageable(buffer_map, curbuf, curbuf+curbufsize, FALSE); 1122 vm_map_simplify(buffer_map, curbuf); 1123 #endif /* UVM */ 1124 } 1125 /* 1126 * Allocate a submap for exec arguments. This map effectively 1127 * limits the number of processes exec'ing at any time. 1128 */ 1129 #if defined(UVM) 1130 exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 1131 16 * NCARGS, TRUE, FALSE, NULL); 1132 #else 1133 exec_map = kmem_suballoc(kernel_map, &minaddr, &maxaddr, 1134 16 * NCARGS, TRUE); 1135 #endif 1136 1137 /* 1138 * Allocate a submap for physio 1139 */ 1140 #if defined(UVM) 1141 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 1142 VM_PHYS_SIZE, TRUE, FALSE, NULL); 1143 #else 1144 phys_map = kmem_suballoc(kernel_map, &minaddr, &maxaddr, 1145 VM_PHYS_SIZE, TRUE); 1146 #endif 1147 1148 /* 1149 * Finally, allocate mbuf cluster submap. 1150 */ 1151 #if defined(UVM) 1152 mb_map = uvm_km_suballoc(kernel_map, (vaddr_t *)&mbutl, &maxaddr, 1153 VM_MBUF_SIZE, FALSE, FALSE, NULL); 1154 #else 1155 mb_map = kmem_suballoc(kernel_map, (vaddr_t *)&mbutl, &maxaddr, 1156 VM_MBUF_SIZE, FALSE); 1157 #endif 1158 /* 1159 * Initialize callouts 1160 */ 1161 callfree = callout; 1162 for (i = 1; i < ncallout; i++) 1163 callout[i-1].c_next = &callout[i]; 1164 callout[i-1].c_next = NULL; 1165 1166 #if defined(DEBUG) 1167 pmapdebug = opmapdebug; 1168 #endif 1169 #if defined(UVM) 1170 printf("avail mem = %ld\n", (long)ptoa(uvmexp.free)); 1171 #else 1172 printf("avail mem = %ld\n", (long)ptoa(cnt.v_free_count)); 1173 #endif 1174 #if 0 1175 { 1176 extern u_long pmap_pages_stolen; 1177 printf("stolen memory for VM structures = %ld bytes\n", 1178 pmap_pages_stolen * PAGE_SIZE); 1179 } 1180 #endif 1181 printf("using %ld buffers containing %ld bytes of memory\n", 1182 (long)nbuf, (long)(bufpages * CLBYTES)); 1183 1184 /* 1185 * Set up buffers, so they can be used to read disk labels. 1186 */ 1187 bufinit(); 1188 1189 /* 1190 * Configure the system. 1191 */ 1192 configure(); 1193 1194 /* 1195 * Note that bootstrapping is finished, and set the HWRPB up 1196 * to do restarts. 1197 */ 1198 hwrpb_restart_setup(); 1199 } 1200 1201 /* 1202 * Retrieve the platform name from the DSR. 1203 */ 1204 const char * 1205 alpha_dsr_sysname() 1206 { 1207 struct dsrdb *dsr; 1208 const char *sysname; 1209 1210 /* 1211 * DSR does not exist on early HWRPB versions. 1212 */ 1213 if (hwrpb->rpb_version < HWRPB_DSRDB_MINVERS) 1214 return (NULL); 1215 1216 dsr = (struct dsrdb *)(((caddr_t)hwrpb) + hwrpb->rpb_dsrdb_off); 1217 sysname = (const char *)((caddr_t)dsr + (dsr->dsr_sysname_off + 1218 sizeof(u_int64_t))); 1219 return (sysname); 1220 } 1221 1222 /* 1223 * Lookup the system specified system variation in the provided table, 1224 * returning the model string on match. 1225 */ 1226 const char * 1227 alpha_variation_name(variation, avtp) 1228 u_int64_t variation; 1229 const struct alpha_variation_table *avtp; 1230 { 1231 int i; 1232 1233 for (i = 0; avtp[i].avt_model != NULL; i++) 1234 if (avtp[i].avt_variation == variation) 1235 return (avtp[i].avt_model); 1236 return (NULL); 1237 } 1238 1239 /* 1240 * Generate a default platform name based for unknown system variations. 1241 */ 1242 const char * 1243 alpha_unknown_sysname() 1244 { 1245 static char s[128]; /* safe size */ 1246 1247 sprintf(s, "%s family, unknown model variation 0x%lx", 1248 platform.family, hwrpb->rpb_variation & SV_ST_MASK); 1249 return ((const char *)s); 1250 } 1251 1252 void 1253 identifycpu() 1254 { 1255 1256 /* 1257 * print out CPU identification information. 1258 */ 1259 printf("%s, %ldMHz\n", cpu_model, 1260 hwrpb->rpb_cc_freq / 1000000); /* XXX true for 21164? */ 1261 printf("%ld byte page size, %d processor%s.\n", 1262 hwrpb->rpb_page_size, ncpus, ncpus == 1 ? "" : "s"); 1263 #if 0 1264 /* this isn't defined for any systems that we run on? */ 1265 printf("serial number 0x%lx 0x%lx\n", 1266 ((long *)hwrpb->rpb_ssn)[0], ((long *)hwrpb->rpb_ssn)[1]); 1267 1268 /* and these aren't particularly useful! */ 1269 printf("variation: 0x%lx, revision 0x%lx\n", 1270 hwrpb->rpb_variation, *(long *)hwrpb->rpb_revision); 1271 #endif 1272 } 1273 1274 int waittime = -1; 1275 struct pcb dumppcb; 1276 1277 void 1278 cpu_reboot(howto, bootstr) 1279 int howto; 1280 char *bootstr; 1281 { 1282 extern int cold; 1283 1284 /* If system is cold, just halt. */ 1285 if (cold) { 1286 howto |= RB_HALT; 1287 goto haltsys; 1288 } 1289 1290 /* If "always halt" was specified as a boot flag, obey. */ 1291 if ((boothowto & RB_HALT) != 0) 1292 howto |= RB_HALT; 1293 1294 boothowto = howto; 1295 if ((howto & RB_NOSYNC) == 0 && waittime < 0) { 1296 waittime = 0; 1297 vfs_shutdown(); 1298 /* 1299 * If we've been adjusting the clock, the todr 1300 * will be out of synch; adjust it now. 1301 */ 1302 resettodr(); 1303 } 1304 1305 /* Disable interrupts. */ 1306 splhigh(); 1307 1308 /* If rebooting and a dump is requested do it. */ 1309 #if 0 1310 if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP) 1311 #else 1312 if (howto & RB_DUMP) 1313 #endif 1314 dumpsys(); 1315 1316 haltsys: 1317 1318 /* run any shutdown hooks */ 1319 doshutdownhooks(); 1320 1321 #ifdef BOOTKEY 1322 printf("hit any key to %s...\n", howto & RB_HALT ? "halt" : "reboot"); 1323 cnpollc(1); /* for proper keyboard command handling */ 1324 cngetc(); 1325 cnpollc(0); 1326 printf("\n"); 1327 #endif 1328 1329 /* Finally, powerdown/halt/reboot the system. */ 1330 if ((howto && RB_POWERDOWN) == RB_POWERDOWN && 1331 platform.powerdown != NULL) { 1332 (*platform.powerdown)(); 1333 printf("WARNING: powerdown failed!\n"); 1334 } 1335 printf("%s\n\n", howto & RB_HALT ? "halted." : "rebooting..."); 1336 prom_halt(howto & RB_HALT); 1337 /*NOTREACHED*/ 1338 } 1339 1340 /* 1341 * These variables are needed by /sbin/savecore 1342 */ 1343 u_long dumpmag = 0x8fca0101; /* magic number */ 1344 int dumpsize = 0; /* pages */ 1345 long dumplo = 0; /* blocks */ 1346 1347 /* 1348 * cpu_dumpsize: calculate size of machine-dependent kernel core dump headers. 1349 */ 1350 int 1351 cpu_dumpsize() 1352 { 1353 int size; 1354 1355 size = ALIGN(sizeof(kcore_seg_t)) + ALIGN(sizeof(cpu_kcore_hdr_t)) + 1356 ALIGN(mem_cluster_cnt * sizeof(phys_ram_seg_t)); 1357 if (roundup(size, dbtob(1)) != dbtob(1)) 1358 return -1; 1359 1360 return (1); 1361 } 1362 1363 /* 1364 * cpu_dump_mempagecnt: calculate size of RAM (in pages) to be dumped. 1365 */ 1366 u_long 1367 cpu_dump_mempagecnt() 1368 { 1369 u_long i, n; 1370 1371 n = 0; 1372 for (i = 0; i < mem_cluster_cnt; i++) 1373 n += atop(mem_clusters[i].size); 1374 return (n); 1375 } 1376 1377 /* 1378 * cpu_dump: dump machine-dependent kernel core dump headers. 1379 */ 1380 int 1381 cpu_dump() 1382 { 1383 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1384 char buf[dbtob(1)]; 1385 kcore_seg_t *segp; 1386 cpu_kcore_hdr_t *cpuhdrp; 1387 phys_ram_seg_t *memsegp; 1388 int i; 1389 1390 dump = bdevsw[major(dumpdev)].d_dump; 1391 1392 bzero(buf, sizeof buf); 1393 segp = (kcore_seg_t *)buf; 1394 cpuhdrp = (cpu_kcore_hdr_t *)&buf[ALIGN(sizeof(*segp))]; 1395 memsegp = (phys_ram_seg_t *)&buf[ ALIGN(sizeof(*segp)) + 1396 ALIGN(sizeof(*cpuhdrp))]; 1397 1398 /* 1399 * Generate a segment header. 1400 */ 1401 CORE_SETMAGIC(*segp, KCORE_MAGIC, MID_MACHINE, CORE_CPU); 1402 segp->c_size = dbtob(1) - ALIGN(sizeof(*segp)); 1403 1404 /* 1405 * Add the machine-dependent header info. 1406 */ 1407 cpuhdrp->lev1map_pa = ALPHA_K0SEG_TO_PHYS((vaddr_t)kernel_lev1map); 1408 cpuhdrp->page_size = PAGE_SIZE; 1409 cpuhdrp->nmemsegs = mem_cluster_cnt; 1410 1411 /* 1412 * Fill in the memory segment descriptors. 1413 */ 1414 for (i = 0; i < mem_cluster_cnt; i++) { 1415 memsegp[i].start = mem_clusters[i].start; 1416 memsegp[i].size = mem_clusters[i].size & ~PAGE_MASK; 1417 } 1418 1419 return (dump(dumpdev, dumplo, (caddr_t)buf, dbtob(1))); 1420 } 1421 1422 /* 1423 * This is called by main to set dumplo and dumpsize. 1424 * Dumps always skip the first CLBYTES of disk space 1425 * in case there might be a disk label stored there. 1426 * If there is extra space, put dump at the end to 1427 * reduce the chance that swapping trashes it. 1428 */ 1429 void 1430 cpu_dumpconf() 1431 { 1432 int nblks, dumpblks; /* size of dump area */ 1433 int maj; 1434 1435 if (dumpdev == NODEV) 1436 goto bad; 1437 maj = major(dumpdev); 1438 if (maj < 0 || maj >= nblkdev) 1439 panic("dumpconf: bad dumpdev=0x%x", dumpdev); 1440 if (bdevsw[maj].d_psize == NULL) 1441 goto bad; 1442 nblks = (*bdevsw[maj].d_psize)(dumpdev); 1443 if (nblks <= ctod(1)) 1444 goto bad; 1445 1446 dumpblks = cpu_dumpsize(); 1447 if (dumpblks < 0) 1448 goto bad; 1449 dumpblks += ctod(cpu_dump_mempagecnt()); 1450 1451 /* If dump won't fit (incl. room for possible label), punt. */ 1452 if (dumpblks > (nblks - ctod(1))) 1453 goto bad; 1454 1455 /* Put dump at end of partition */ 1456 dumplo = nblks - dumpblks; 1457 1458 /* dumpsize is in page units, and doesn't include headers. */ 1459 dumpsize = cpu_dump_mempagecnt(); 1460 return; 1461 1462 bad: 1463 dumpsize = 0; 1464 return; 1465 } 1466 1467 /* 1468 * Dump the kernel's image to the swap partition. 1469 */ 1470 #define BYTES_PER_DUMP NBPG 1471 1472 void 1473 dumpsys() 1474 { 1475 u_long totalbytesleft, bytes, i, n, memcl; 1476 u_long maddr; 1477 int psize; 1478 daddr_t blkno; 1479 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1480 int error; 1481 1482 /* Save registers. */ 1483 savectx(&dumppcb); 1484 1485 msgbufenabled = 0; /* don't record dump msgs in msgbuf */ 1486 if (dumpdev == NODEV) 1487 return; 1488 1489 /* 1490 * For dumps during autoconfiguration, 1491 * if dump device has already configured... 1492 */ 1493 if (dumpsize == 0) 1494 cpu_dumpconf(); 1495 if (dumplo <= 0) { 1496 printf("\ndump to dev %u,%u not possible\n", major(dumpdev), 1497 minor(dumpdev)); 1498 return; 1499 } 1500 printf("\ndumping to dev %u,%u offset %ld\n", major(dumpdev), 1501 minor(dumpdev), dumplo); 1502 1503 psize = (*bdevsw[major(dumpdev)].d_psize)(dumpdev); 1504 printf("dump "); 1505 if (psize == -1) { 1506 printf("area unavailable\n"); 1507 return; 1508 } 1509 1510 /* XXX should purge all outstanding keystrokes. */ 1511 1512 if ((error = cpu_dump()) != 0) 1513 goto err; 1514 1515 totalbytesleft = ptoa(cpu_dump_mempagecnt()); 1516 blkno = dumplo + cpu_dumpsize(); 1517 dump = bdevsw[major(dumpdev)].d_dump; 1518 error = 0; 1519 1520 for (memcl = 0; memcl < mem_cluster_cnt; memcl++) { 1521 maddr = mem_clusters[memcl].start; 1522 bytes = mem_clusters[memcl].size & ~PAGE_MASK; 1523 1524 for (i = 0; i < bytes; i += n, totalbytesleft -= n) { 1525 1526 /* Print out how many MBs we to go. */ 1527 if ((totalbytesleft % (1024*1024)) == 0) 1528 printf("%d ", totalbytesleft / (1024 * 1024)); 1529 1530 /* Limit size for next transfer. */ 1531 n = bytes - i; 1532 if (n > BYTES_PER_DUMP) 1533 n = BYTES_PER_DUMP; 1534 1535 error = (*dump)(dumpdev, blkno, 1536 (caddr_t)ALPHA_PHYS_TO_K0SEG(maddr), n); 1537 if (error) 1538 goto err; 1539 maddr += n; 1540 blkno += btodb(n); /* XXX? */ 1541 1542 /* XXX should look for keystrokes, to cancel. */ 1543 } 1544 } 1545 1546 err: 1547 switch (error) { 1548 1549 case ENXIO: 1550 printf("device bad\n"); 1551 break; 1552 1553 case EFAULT: 1554 printf("device not ready\n"); 1555 break; 1556 1557 case EINVAL: 1558 printf("area improper\n"); 1559 break; 1560 1561 case EIO: 1562 printf("i/o error\n"); 1563 break; 1564 1565 case EINTR: 1566 printf("aborted from console\n"); 1567 break; 1568 1569 case 0: 1570 printf("succeeded\n"); 1571 break; 1572 1573 default: 1574 printf("error %d\n", error); 1575 break; 1576 } 1577 printf("\n\n"); 1578 delay(1000); 1579 } 1580 1581 void 1582 frametoreg(framep, regp) 1583 struct trapframe *framep; 1584 struct reg *regp; 1585 { 1586 1587 regp->r_regs[R_V0] = framep->tf_regs[FRAME_V0]; 1588 regp->r_regs[R_T0] = framep->tf_regs[FRAME_T0]; 1589 regp->r_regs[R_T1] = framep->tf_regs[FRAME_T1]; 1590 regp->r_regs[R_T2] = framep->tf_regs[FRAME_T2]; 1591 regp->r_regs[R_T3] = framep->tf_regs[FRAME_T3]; 1592 regp->r_regs[R_T4] = framep->tf_regs[FRAME_T4]; 1593 regp->r_regs[R_T5] = framep->tf_regs[FRAME_T5]; 1594 regp->r_regs[R_T6] = framep->tf_regs[FRAME_T6]; 1595 regp->r_regs[R_T7] = framep->tf_regs[FRAME_T7]; 1596 regp->r_regs[R_S0] = framep->tf_regs[FRAME_S0]; 1597 regp->r_regs[R_S1] = framep->tf_regs[FRAME_S1]; 1598 regp->r_regs[R_S2] = framep->tf_regs[FRAME_S2]; 1599 regp->r_regs[R_S3] = framep->tf_regs[FRAME_S3]; 1600 regp->r_regs[R_S4] = framep->tf_regs[FRAME_S4]; 1601 regp->r_regs[R_S5] = framep->tf_regs[FRAME_S5]; 1602 regp->r_regs[R_S6] = framep->tf_regs[FRAME_S6]; 1603 regp->r_regs[R_A0] = framep->tf_regs[FRAME_A0]; 1604 regp->r_regs[R_A1] = framep->tf_regs[FRAME_A1]; 1605 regp->r_regs[R_A2] = framep->tf_regs[FRAME_A2]; 1606 regp->r_regs[R_A3] = framep->tf_regs[FRAME_A3]; 1607 regp->r_regs[R_A4] = framep->tf_regs[FRAME_A4]; 1608 regp->r_regs[R_A5] = framep->tf_regs[FRAME_A5]; 1609 regp->r_regs[R_T8] = framep->tf_regs[FRAME_T8]; 1610 regp->r_regs[R_T9] = framep->tf_regs[FRAME_T9]; 1611 regp->r_regs[R_T10] = framep->tf_regs[FRAME_T10]; 1612 regp->r_regs[R_T11] = framep->tf_regs[FRAME_T11]; 1613 regp->r_regs[R_RA] = framep->tf_regs[FRAME_RA]; 1614 regp->r_regs[R_T12] = framep->tf_regs[FRAME_T12]; 1615 regp->r_regs[R_AT] = framep->tf_regs[FRAME_AT]; 1616 regp->r_regs[R_GP] = framep->tf_regs[FRAME_GP]; 1617 /* regp->r_regs[R_SP] = framep->tf_regs[FRAME_SP]; XXX */ 1618 regp->r_regs[R_ZERO] = 0; 1619 } 1620 1621 void 1622 regtoframe(regp, framep) 1623 struct reg *regp; 1624 struct trapframe *framep; 1625 { 1626 1627 framep->tf_regs[FRAME_V0] = regp->r_regs[R_V0]; 1628 framep->tf_regs[FRAME_T0] = regp->r_regs[R_T0]; 1629 framep->tf_regs[FRAME_T1] = regp->r_regs[R_T1]; 1630 framep->tf_regs[FRAME_T2] = regp->r_regs[R_T2]; 1631 framep->tf_regs[FRAME_T3] = regp->r_regs[R_T3]; 1632 framep->tf_regs[FRAME_T4] = regp->r_regs[R_T4]; 1633 framep->tf_regs[FRAME_T5] = regp->r_regs[R_T5]; 1634 framep->tf_regs[FRAME_T6] = regp->r_regs[R_T6]; 1635 framep->tf_regs[FRAME_T7] = regp->r_regs[R_T7]; 1636 framep->tf_regs[FRAME_S0] = regp->r_regs[R_S0]; 1637 framep->tf_regs[FRAME_S1] = regp->r_regs[R_S1]; 1638 framep->tf_regs[FRAME_S2] = regp->r_regs[R_S2]; 1639 framep->tf_regs[FRAME_S3] = regp->r_regs[R_S3]; 1640 framep->tf_regs[FRAME_S4] = regp->r_regs[R_S4]; 1641 framep->tf_regs[FRAME_S5] = regp->r_regs[R_S5]; 1642 framep->tf_regs[FRAME_S6] = regp->r_regs[R_S6]; 1643 framep->tf_regs[FRAME_A0] = regp->r_regs[R_A0]; 1644 framep->tf_regs[FRAME_A1] = regp->r_regs[R_A1]; 1645 framep->tf_regs[FRAME_A2] = regp->r_regs[R_A2]; 1646 framep->tf_regs[FRAME_A3] = regp->r_regs[R_A3]; 1647 framep->tf_regs[FRAME_A4] = regp->r_regs[R_A4]; 1648 framep->tf_regs[FRAME_A5] = regp->r_regs[R_A5]; 1649 framep->tf_regs[FRAME_T8] = regp->r_regs[R_T8]; 1650 framep->tf_regs[FRAME_T9] = regp->r_regs[R_T9]; 1651 framep->tf_regs[FRAME_T10] = regp->r_regs[R_T10]; 1652 framep->tf_regs[FRAME_T11] = regp->r_regs[R_T11]; 1653 framep->tf_regs[FRAME_RA] = regp->r_regs[R_RA]; 1654 framep->tf_regs[FRAME_T12] = regp->r_regs[R_T12]; 1655 framep->tf_regs[FRAME_AT] = regp->r_regs[R_AT]; 1656 framep->tf_regs[FRAME_GP] = regp->r_regs[R_GP]; 1657 /* framep->tf_regs[FRAME_SP] = regp->r_regs[R_SP]; XXX */ 1658 /* ??? = regp->r_regs[R_ZERO]; */ 1659 } 1660 1661 void 1662 printregs(regp) 1663 struct reg *regp; 1664 { 1665 int i; 1666 1667 for (i = 0; i < 32; i++) 1668 printf("R%d:\t0x%016lx%s", i, regp->r_regs[i], 1669 i & 1 ? "\n" : "\t"); 1670 } 1671 1672 void 1673 regdump(framep) 1674 struct trapframe *framep; 1675 { 1676 struct reg reg; 1677 1678 frametoreg(framep, ®); 1679 reg.r_regs[R_SP] = alpha_pal_rdusp(); 1680 1681 printf("REGISTERS:\n"); 1682 printregs(®); 1683 } 1684 1685 #ifdef DEBUG 1686 int sigdebug = 0; 1687 int sigpid = 0; 1688 #define SDB_FOLLOW 0x01 1689 #define SDB_KSTACK 0x02 1690 #endif 1691 1692 /* 1693 * Send an interrupt to process. 1694 */ 1695 void 1696 sendsig(catcher, sig, mask, code) 1697 sig_t catcher; 1698 int sig; 1699 sigset_t *mask; 1700 u_long code; 1701 { 1702 struct proc *p = curproc; 1703 struct sigcontext *scp, ksc; 1704 struct trapframe *frame; 1705 struct sigacts *psp = p->p_sigacts; 1706 int onstack, fsize, rndfsize; 1707 extern char sigcode[], esigcode[]; 1708 extern struct proc *fpcurproc; 1709 1710 frame = p->p_md.md_tf; 1711 1712 /* Do we need to jump onto the signal stack? */ 1713 onstack = 1714 (psp->ps_sigstk.ss_flags & (SS_DISABLE | SS_ONSTACK)) == 0 && 1715 (psp->ps_sigact[sig].sa_flags & SA_ONSTACK) != 0; 1716 1717 /* Allocate space for the signal handler context. */ 1718 fsize = sizeof(ksc); 1719 rndfsize = ((fsize + 15) / 16) * 16; 1720 1721 if (onstack) 1722 scp = (struct sigcontext *)((caddr_t)psp->ps_sigstk.ss_sp + 1723 psp->ps_sigstk.ss_size - rndfsize); 1724 else 1725 scp = (struct sigcontext *)(alpha_pal_rdusp() - rndfsize); 1726 1727 #ifdef DEBUG 1728 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1729 printf("sendsig(%d): sig %d ssp %p usp %p\n", p->p_pid, 1730 sig, &onstack, scp); 1731 #endif 1732 1733 /* Build stack frame for signal trampoline. */ 1734 ksc.sc_pc = frame->tf_regs[FRAME_PC]; 1735 ksc.sc_ps = frame->tf_regs[FRAME_PS]; 1736 1737 /* Save register context. */ 1738 frametoreg(frame, (struct reg *)ksc.sc_regs); 1739 ksc.sc_regs[R_ZERO] = 0xACEDBADE; /* magic number */ 1740 ksc.sc_regs[R_SP] = alpha_pal_rdusp(); 1741 1742 /* save the floating-point state, if necessary, then copy it. */ 1743 if (p == fpcurproc) { 1744 alpha_pal_wrfen(1); 1745 savefpstate(&p->p_addr->u_pcb.pcb_fp); 1746 alpha_pal_wrfen(0); 1747 fpcurproc = NULL; 1748 } 1749 ksc.sc_ownedfp = p->p_md.md_flags & MDP_FPUSED; 1750 bcopy(&p->p_addr->u_pcb.pcb_fp, (struct fpreg *)ksc.sc_fpregs, 1751 sizeof(struct fpreg)); 1752 ksc.sc_fp_control = 0; /* XXX ? */ 1753 bzero(ksc.sc_reserved, sizeof ksc.sc_reserved); /* XXX */ 1754 bzero(ksc.sc_xxx, sizeof ksc.sc_xxx); /* XXX */ 1755 1756 /* Save signal stack. */ 1757 ksc.sc_onstack = psp->ps_sigstk.ss_flags & SS_ONSTACK; 1758 1759 /* Save signal mask. */ 1760 ksc.sc_mask = *mask; 1761 1762 #ifdef COMPAT_13 1763 /* 1764 * XXX We always have to save an old style signal mask because 1765 * XXX we might be delivering a signal to a process which will 1766 * XXX escape from the signal in a non-standard way and invoke 1767 * XXX sigreturn() directly. 1768 */ 1769 { 1770 /* Note: it's a long in the stack frame. */ 1771 sigset13_t mask13; 1772 1773 native_sigset_to_sigset13(mask, &mask13); 1774 ksc.__sc_mask13 = mask13; 1775 } 1776 #endif 1777 1778 #ifdef COMPAT_OSF1 1779 /* 1780 * XXX Create an OSF/1-style sigcontext and associated goo. 1781 */ 1782 #endif 1783 1784 if (copyout(&ksc, (caddr_t)scp, fsize) != 0) { 1785 /* 1786 * Process has trashed its stack; give it an illegal 1787 * instruction to halt it in its tracks. 1788 */ 1789 #ifdef DEBUG 1790 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1791 printf("sendsig(%d): copyout failed on sig %d\n", 1792 p->p_pid, sig); 1793 #endif 1794 sigexit(p, SIGILL); 1795 /* NOTREACHED */ 1796 } 1797 #ifdef DEBUG 1798 if (sigdebug & SDB_FOLLOW) 1799 printf("sendsig(%d): sig %d scp %p code %lx\n", p->p_pid, sig, 1800 scp, code); 1801 #endif 1802 1803 /* Set up the registers to return to sigcode. */ 1804 frame->tf_regs[FRAME_PC] = 1805 (u_int64_t)PS_STRINGS - (esigcode - sigcode); 1806 frame->tf_regs[FRAME_A0] = sig; 1807 frame->tf_regs[FRAME_A1] = code; 1808 frame->tf_regs[FRAME_A2] = (u_int64_t)scp; 1809 frame->tf_regs[FRAME_T12] = (u_int64_t)catcher; /* t12 is pv */ 1810 alpha_pal_wrusp((unsigned long)scp); 1811 1812 #ifdef DEBUG 1813 if (sigdebug & SDB_FOLLOW) 1814 printf("sendsig(%d): pc %lx, catcher %lx\n", p->p_pid, 1815 frame->tf_regs[FRAME_PC], frame->tf_regs[FRAME_A3]); 1816 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1817 printf("sendsig(%d): sig %d returns\n", 1818 p->p_pid, sig); 1819 #endif 1820 } 1821 1822 /* 1823 * System call to cleanup state after a signal 1824 * has been taken. Reset signal mask and 1825 * stack state from context left by sendsig (above). 1826 * Return to previous pc and psl as specified by 1827 * context left by sendsig. Check carefully to 1828 * make sure that the user has not modified the 1829 * psl to gain improper priviledges or to cause 1830 * a machine fault. 1831 */ 1832 /* ARGSUSED */ 1833 int 1834 sys___sigreturn14(p, v, retval) 1835 struct proc *p; 1836 void *v; 1837 register_t *retval; 1838 { 1839 struct sys___sigreturn14_args /* { 1840 syscallarg(struct sigcontext *) sigcntxp; 1841 } */ *uap = v; 1842 struct sigcontext *scp, ksc; 1843 extern struct proc *fpcurproc; 1844 1845 /* 1846 * The trampoline code hands us the context. 1847 * It is unsafe to keep track of it ourselves, in the event that a 1848 * program jumps out of a signal handler. 1849 */ 1850 scp = SCARG(uap, sigcntxp); 1851 #ifdef DEBUG 1852 if (sigdebug & SDB_FOLLOW) 1853 printf("sigreturn: pid %d, scp %p\n", p->p_pid, scp); 1854 #endif 1855 if (ALIGN(scp) != (u_int64_t)scp) 1856 return (EINVAL); 1857 1858 if (copyin((caddr_t)scp, &ksc, sizeof(ksc)) != 0) 1859 return (EFAULT); 1860 1861 if (ksc.sc_regs[R_ZERO] != 0xACEDBADE) /* magic number */ 1862 return (EINVAL); 1863 1864 /* Restore register context. */ 1865 p->p_md.md_tf->tf_regs[FRAME_PC] = ksc.sc_pc; 1866 p->p_md.md_tf->tf_regs[FRAME_PS] = 1867 (ksc.sc_ps | ALPHA_PSL_USERSET) & ~ALPHA_PSL_USERCLR; 1868 1869 regtoframe((struct reg *)ksc.sc_regs, p->p_md.md_tf); 1870 alpha_pal_wrusp(ksc.sc_regs[R_SP]); 1871 1872 /* XXX ksc.sc_ownedfp ? */ 1873 if (p == fpcurproc) 1874 fpcurproc = NULL; 1875 bcopy((struct fpreg *)ksc.sc_fpregs, &p->p_addr->u_pcb.pcb_fp, 1876 sizeof(struct fpreg)); 1877 /* XXX ksc.sc_fp_control ? */ 1878 1879 /* Restore signal stack. */ 1880 if (ksc.sc_onstack & SS_ONSTACK) 1881 p->p_sigacts->ps_sigstk.ss_flags |= SS_ONSTACK; 1882 else 1883 p->p_sigacts->ps_sigstk.ss_flags &= ~SS_ONSTACK; 1884 1885 /* Restore signal mask. */ 1886 (void) sigprocmask1(p, SIG_SETMASK, &ksc.sc_mask, 0); 1887 1888 #ifdef DEBUG 1889 if (sigdebug & SDB_FOLLOW) 1890 printf("sigreturn(%d): returns\n", p->p_pid); 1891 #endif 1892 return (EJUSTRETURN); 1893 } 1894 1895 /* 1896 * machine dependent system variables. 1897 */ 1898 int 1899 cpu_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 1900 int *name; 1901 u_int namelen; 1902 void *oldp; 1903 size_t *oldlenp; 1904 void *newp; 1905 size_t newlen; 1906 struct proc *p; 1907 { 1908 dev_t consdev; 1909 1910 /* all sysctl names at this level are terminal */ 1911 if (namelen != 1) 1912 return (ENOTDIR); /* overloaded */ 1913 1914 switch (name[0]) { 1915 case CPU_CONSDEV: 1916 if (cn_tab != NULL) 1917 consdev = cn_tab->cn_dev; 1918 else 1919 consdev = NODEV; 1920 return (sysctl_rdstruct(oldp, oldlenp, newp, &consdev, 1921 sizeof consdev)); 1922 1923 case CPU_ROOT_DEVICE: 1924 return (sysctl_rdstring(oldp, oldlenp, newp, 1925 root_device->dv_xname)); 1926 1927 case CPU_UNALIGNED_PRINT: 1928 return (sysctl_int(oldp, oldlenp, newp, newlen, 1929 &alpha_unaligned_print)); 1930 1931 case CPU_UNALIGNED_FIX: 1932 return (sysctl_int(oldp, oldlenp, newp, newlen, 1933 &alpha_unaligned_fix)); 1934 1935 case CPU_UNALIGNED_SIGBUS: 1936 return (sysctl_int(oldp, oldlenp, newp, newlen, 1937 &alpha_unaligned_sigbus)); 1938 1939 case CPU_BOOTED_KERNEL: 1940 return (sysctl_rdstring(oldp, oldlenp, newp, 1941 bootinfo.booted_kernel)); 1942 1943 default: 1944 return (EOPNOTSUPP); 1945 } 1946 /* NOTREACHED */ 1947 } 1948 1949 /* 1950 * Set registers on exec. 1951 */ 1952 void 1953 setregs(p, pack, stack) 1954 register struct proc *p; 1955 struct exec_package *pack; 1956 u_long stack; 1957 { 1958 struct trapframe *tfp = p->p_md.md_tf; 1959 extern struct proc *fpcurproc; 1960 #ifdef DEBUG 1961 int i; 1962 #endif 1963 1964 #ifdef DEBUG 1965 /* 1966 * Crash and dump, if the user requested it. 1967 */ 1968 if (boothowto & RB_DUMP) 1969 panic("crash requested by boot flags"); 1970 #endif 1971 1972 #ifdef DEBUG 1973 for (i = 0; i < FRAME_SIZE; i++) 1974 tfp->tf_regs[i] = 0xbabefacedeadbeef; 1975 #else 1976 bzero(tfp->tf_regs, FRAME_SIZE * sizeof tfp->tf_regs[0]); 1977 #endif 1978 bzero(&p->p_addr->u_pcb.pcb_fp, sizeof p->p_addr->u_pcb.pcb_fp); 1979 #define FP_RN 2 /* XXX */ 1980 p->p_addr->u_pcb.pcb_fp.fpr_cr = (long)FP_RN << 58; 1981 alpha_pal_wrusp(stack); 1982 tfp->tf_regs[FRAME_PS] = ALPHA_PSL_USERSET; 1983 tfp->tf_regs[FRAME_PC] = pack->ep_entry & ~3; 1984 1985 tfp->tf_regs[FRAME_A0] = stack; /* a0 = sp */ 1986 tfp->tf_regs[FRAME_A1] = 0; /* a1 = rtld cleanup */ 1987 tfp->tf_regs[FRAME_A2] = 0; /* a2 = rtld object */ 1988 tfp->tf_regs[FRAME_A3] = (u_int64_t)PS_STRINGS; /* a3 = ps_strings */ 1989 tfp->tf_regs[FRAME_T12] = tfp->tf_regs[FRAME_PC]; /* a.k.a. PV */ 1990 1991 p->p_md.md_flags &= ~MDP_FPUSED; 1992 if (fpcurproc == p) 1993 fpcurproc = NULL; 1994 } 1995 1996 void 1997 netintr() 1998 { 1999 int n, s; 2000 2001 s = splhigh(); 2002 n = netisr; 2003 netisr = 0; 2004 splx(s); 2005 2006 #define DONETISR(bit, fn) \ 2007 do { \ 2008 if (n & (1 << (bit))) \ 2009 fn; \ 2010 } while (0) 2011 2012 #ifdef INET 2013 #if NARP > 0 2014 DONETISR(NETISR_ARP, arpintr()); 2015 #endif 2016 DONETISR(NETISR_IP, ipintr()); 2017 #endif 2018 #ifdef NETATALK 2019 DONETISR(NETISR_ATALK, atintr()); 2020 #endif 2021 #ifdef NS 2022 DONETISR(NETISR_NS, nsintr()); 2023 #endif 2024 #ifdef ISO 2025 DONETISR(NETISR_ISO, clnlintr()); 2026 #endif 2027 #ifdef CCITT 2028 DONETISR(NETISR_CCITT, ccittintr()); 2029 #endif 2030 #ifdef NATM 2031 DONETISR(NETISR_NATM, natmintr()); 2032 #endif 2033 #if NPPP > 1 2034 DONETISR(NETISR_PPP, pppintr()); 2035 #endif 2036 2037 #undef DONETISR 2038 } 2039 2040 void 2041 do_sir() 2042 { 2043 u_int64_t n; 2044 2045 do { 2046 (void)splhigh(); 2047 n = ssir; 2048 ssir = 0; 2049 splsoft(); /* don't recurse through spl0() */ 2050 2051 #if defined(UVM) 2052 #define COUNT_SOFT uvmexp.softs++ 2053 #else 2054 #define COUNT_SOFT cnt.v_soft++ 2055 #endif 2056 2057 #define DO_SIR(bit, fn) \ 2058 do { \ 2059 if (n & (bit)) { \ 2060 COUNT_SOFT; \ 2061 fn; \ 2062 } \ 2063 } while (0) 2064 2065 DO_SIR(SIR_NET, netintr()); 2066 DO_SIR(SIR_CLOCK, softclock()); 2067 2068 #undef COUNT_SOFT 2069 #undef DO_SIR 2070 } while (ssir != 0); 2071 } 2072 2073 int 2074 spl0() 2075 { 2076 2077 if (ssir) 2078 do_sir(); /* it lowers the IPL itself */ 2079 2080 return (alpha_pal_swpipl(ALPHA_PSL_IPL_0)); 2081 } 2082 2083 /* 2084 * The following primitives manipulate the run queues. _whichqs tells which 2085 * of the 32 queues _qs have processes in them. Setrunqueue puts processes 2086 * into queues, Remrunqueue removes them from queues. The running process is 2087 * on no queue, other processes are on a queue related to p->p_priority, 2088 * divided by 4 actually to shrink the 0-127 range of priorities into the 32 2089 * available queues. 2090 */ 2091 /* 2092 * setrunqueue(p) 2093 * proc *p; 2094 * 2095 * Call should be made at splclock(), and p->p_stat should be SRUN. 2096 */ 2097 2098 void 2099 setrunqueue(p) 2100 struct proc *p; 2101 { 2102 int bit; 2103 2104 /* firewall: p->p_back must be NULL */ 2105 if (p->p_back != NULL) 2106 panic("setrunqueue"); 2107 2108 bit = p->p_priority >> 2; 2109 whichqs |= (1 << bit); 2110 p->p_forw = (struct proc *)&qs[bit]; 2111 p->p_back = qs[bit].ph_rlink; 2112 p->p_back->p_forw = p; 2113 qs[bit].ph_rlink = p; 2114 } 2115 2116 /* 2117 * remrunqueue(p) 2118 * 2119 * Call should be made at splclock(). 2120 */ 2121 void 2122 remrunqueue(p) 2123 struct proc *p; 2124 { 2125 int bit; 2126 2127 bit = p->p_priority >> 2; 2128 if ((whichqs & (1 << bit)) == 0) 2129 panic("remrunqueue"); 2130 2131 p->p_back->p_forw = p->p_forw; 2132 p->p_forw->p_back = p->p_back; 2133 p->p_back = NULL; /* for firewall checking. */ 2134 2135 if ((struct proc *)&qs[bit] == qs[bit].ph_link) 2136 whichqs &= ~(1 << bit); 2137 } 2138 2139 /* 2140 * Return the best possible estimate of the time in the timeval 2141 * to which tvp points. Unfortunately, we can't read the hardware registers. 2142 * We guarantee that the time will be greater than the value obtained by a 2143 * previous call. 2144 */ 2145 void 2146 microtime(tvp) 2147 register struct timeval *tvp; 2148 { 2149 int s = splclock(); 2150 static struct timeval lasttime; 2151 2152 *tvp = time; 2153 #ifdef notdef 2154 tvp->tv_usec += clkread(); 2155 while (tvp->tv_usec > 1000000) { 2156 tvp->tv_sec++; 2157 tvp->tv_usec -= 1000000; 2158 } 2159 #endif 2160 if (tvp->tv_sec == lasttime.tv_sec && 2161 tvp->tv_usec <= lasttime.tv_usec && 2162 (tvp->tv_usec = lasttime.tv_usec + 1) > 1000000) { 2163 tvp->tv_sec++; 2164 tvp->tv_usec -= 1000000; 2165 } 2166 lasttime = *tvp; 2167 splx(s); 2168 } 2169 2170 /* 2171 * Wait "n" microseconds. 2172 */ 2173 void 2174 delay(n) 2175 unsigned long n; 2176 { 2177 long N = cycles_per_usec * (n); 2178 2179 while (N > 0) /* XXX */ 2180 N -= 3; /* XXX */ 2181 } 2182 2183 #if defined(COMPAT_OSF1) || 1 /* XXX */ 2184 void cpu_exec_ecoff_setregs __P((struct proc *, struct exec_package *, 2185 u_long)); 2186 2187 void 2188 cpu_exec_ecoff_setregs(p, epp, stack) 2189 struct proc *p; 2190 struct exec_package *epp; 2191 u_long stack; 2192 { 2193 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2194 2195 setregs(p, epp, stack); 2196 p->p_md.md_tf->tf_regs[FRAME_GP] = execp->a.gp_value; 2197 } 2198 2199 /* 2200 * cpu_exec_ecoff_hook(): 2201 * cpu-dependent ECOFF format hook for execve(). 2202 * 2203 * Do any machine-dependent diddling of the exec package when doing ECOFF. 2204 * 2205 */ 2206 int 2207 cpu_exec_ecoff_hook(p, epp) 2208 struct proc *p; 2209 struct exec_package *epp; 2210 { 2211 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2212 extern struct emul emul_netbsd; 2213 #ifdef COMPAT_OSF1 2214 extern struct emul emul_osf1; 2215 #endif 2216 2217 switch (execp->f.f_magic) { 2218 #ifdef COMPAT_OSF1 2219 case ECOFF_MAGIC_ALPHA: 2220 epp->ep_emul = &emul_osf1; 2221 break; 2222 #endif 2223 2224 case ECOFF_MAGIC_NETBSD_ALPHA: 2225 epp->ep_emul = &emul_netbsd; 2226 break; 2227 2228 default: 2229 return ENOEXEC; 2230 } 2231 return 0; 2232 } 2233 #endif 2234 2235 int 2236 alpha_pa_access(pa) 2237 u_long pa; 2238 { 2239 int i; 2240 2241 for (i = 0; i < mem_cluster_cnt; i++) { 2242 if (pa < mem_clusters[i].start) 2243 continue; 2244 if ((pa - mem_clusters[i].start) >= 2245 (mem_clusters[i].size & ~PAGE_MASK)) 2246 continue; 2247 return (mem_clusters[i].size & PAGE_MASK); /* prot */ 2248 } 2249 return (PROT_NONE); 2250 } 2251 2252 /* XXX XXX BEGIN XXX XXX */ 2253 paddr_t alpha_XXX_dmamap_or; /* XXX */ 2254 /* XXX */ 2255 paddr_t /* XXX */ 2256 alpha_XXX_dmamap(v) /* XXX */ 2257 vaddr_t v; /* XXX */ 2258 { /* XXX */ 2259 /* XXX */ 2260 return (vtophys(v) | alpha_XXX_dmamap_or); /* XXX */ 2261 } /* XXX */ 2262 /* XXX XXX END XXX XXX */ 2263 2264 struct mchkinfo * 2265 cpu_mchkinfo() 2266 { 2267 if (mchkinfo_all_cpus == NULL) 2268 return &startup_info; 2269 return mchkinfo_all_cpus + alpha_pal_whami(); 2270 } 2271
Indexes created Sat Oct 11 16:09:52 GMT 2025