machdep.c revision 1.143
1 /* $NetBSD: machdep.c,v 1.143 1998/09/21 00:33:17 matt 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 1.143 1998/09/21 00:33:17 matt 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 #include "com.h" 186 #if NCOM > 0 187 extern void comsoft __P((void)); 188 #endif 189 190 #if defined(UVM) 191 vm_map_t exec_map = NULL; 192 vm_map_t mb_map = NULL; 193 vm_map_t phys_map = NULL; 194 #else 195 vm_map_t buffer_map; 196 #endif 197 198 /* 199 * Declare these as initialized data so we can patch them. 200 */ 201 int nswbuf = 0; 202 #ifdef NBUF 203 int nbuf = NBUF; 204 #else 205 int nbuf = 0; 206 #endif 207 #ifdef BUFPAGES 208 int bufpages = BUFPAGES; 209 #else 210 int bufpages = 0; 211 #endif 212 caddr_t msgbufaddr; 213 214 int maxmem; /* max memory per process */ 215 216 int totalphysmem; /* total amount of physical memory in system */ 217 int physmem; /* physical memory used by NetBSD + some rsvd */ 218 int resvmem; /* amount of memory reserved for PROM */ 219 int unusedmem; /* amount of memory for OS that we don't use */ 220 int unknownmem; /* amount of memory with an unknown use */ 221 222 int cputype; /* system type, from the RPB */ 223 224 /* 225 * XXX We need an address to which we can assign things so that they 226 * won't be optimized away because we didn't use the value. 227 */ 228 u_int32_t no_optimize; 229 230 /* the following is used externally (sysctl_hw) */ 231 char machine[] = MACHINE; /* from <machine/param.h> */ 232 char machine_arch[] = MACHINE_ARCH; /* from <machine/param.h> */ 233 char cpu_model[128]; 234 235 struct user *proc0paddr; 236 237 /* Number of machine cycles per microsecond */ 238 u_int64_t cycles_per_usec; 239 240 /* number of cpus in the box. really! */ 241 int ncpus; 242 243 /* machine check info array, valloc()'ed in allocsys() */ 244 245 static struct mchkinfo startup_info, 246 *mchkinfo_all_cpus; 247 248 struct bootinfo_kernel bootinfo; 249 250 /* For built-in TCDS */ 251 #if defined(DEC_3000_300) || defined(DEC_3000_500) 252 u_int8_t dec_3000_scsiid[2], dec_3000_scsifast[2]; 253 #endif 254 255 struct platform platform; 256 257 u_int32_t vm_mbuf_size = _VM_MBUF_SIZE; 258 u_int32_t vm_kmem_size = _VM_KMEM_SIZE; 259 u_int32_t vm_phys_size = _VM_PHYS_SIZE; 260 261 #ifdef DDB 262 /* start and end of kernel symbol table */ 263 void *ksym_start, *ksym_end; 264 #endif 265 266 /* for cpu_sysctl() */ 267 int alpha_unaligned_print = 1; /* warn about unaligned accesses */ 268 int alpha_unaligned_fix = 1; /* fix up unaligned accesses */ 269 int alpha_unaligned_sigbus = 0; /* don't SIGBUS on fixed-up accesses */ 270 271 /* 272 * XXX This should be dynamically sized, but we have the chicken-egg problem! 273 * XXX it should also be larger than it is, because not all of the mddt 274 * XXX clusters end up being used for VM. 275 */ 276 phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX]; /* low size bits overloaded */ 277 int mem_cluster_cnt; 278 279 caddr_t allocsys __P((caddr_t)); 280 int cpu_dump __P((void)); 281 int cpu_dumpsize __P((void)); 282 u_long cpu_dump_mempagecnt __P((void)); 283 void dumpsys __P((void)); 284 void identifycpu __P((void)); 285 void netintr __P((void)); 286 void printregs __P((struct reg *)); 287 288 void 289 alpha_init(pfn, ptb, bim, bip, biv) 290 u_long pfn; /* first free PFN number */ 291 u_long ptb; /* PFN of current level 1 page table */ 292 u_long bim; /* bootinfo magic */ 293 u_long bip; /* bootinfo pointer */ 294 u_long biv; /* bootinfo version */ 295 { 296 extern char kernel_text[], _end[]; 297 struct mddt *mddtp; 298 struct mddt_cluster *memc; 299 int i, mddtweird; 300 struct vm_physseg *vps; 301 vaddr_t kernstart, kernend; 302 paddr_t kernstartpfn, kernendpfn, pfn0, pfn1; 303 vsize_t size; 304 char *p; 305 caddr_t v; 306 char *bootinfo_msg; 307 308 /* NO OUTPUT ALLOWED UNTIL FURTHER NOTICE */ 309 310 /* 311 * Turn off interrupts (not mchecks) and floating point. 312 * Make sure the instruction and data streams are consistent. 313 */ 314 (void)alpha_pal_swpipl(ALPHA_PSL_IPL_HIGH); 315 alpha_pal_wrfen(0); 316 ALPHA_TBIA(); 317 alpha_pal_imb(); 318 319 /* 320 * Get critical system information (if possible, from the 321 * information provided by the boot program). 322 */ 323 bootinfo_msg = NULL; 324 if (bim == BOOTINFO_MAGIC) { 325 if (biv == 0) { /* backward compat */ 326 biv = *(u_long *)bip; 327 bip += 8; 328 } 329 switch (biv) { 330 case 1: { 331 struct bootinfo_v1 *v1p = (struct bootinfo_v1 *)bip; 332 333 bootinfo.ssym = v1p->ssym; 334 bootinfo.esym = v1p->esym; 335 /* hwrpb may not be provided by boot block in v1 */ 336 if (v1p->hwrpb != NULL) { 337 bootinfo.hwrpb_phys = 338 ((struct rpb *)v1p->hwrpb)->rpb_phys; 339 bootinfo.hwrpb_size = v1p->hwrpbsize; 340 } else { 341 bootinfo.hwrpb_phys = 342 ((struct rpb *)HWRPB_ADDR)->rpb_phys; 343 bootinfo.hwrpb_size = 344 ((struct rpb *)HWRPB_ADDR)->rpb_size; 345 } 346 bcopy(v1p->boot_flags, bootinfo.boot_flags, 347 min(sizeof v1p->boot_flags, 348 sizeof bootinfo.boot_flags)); 349 bcopy(v1p->booted_kernel, bootinfo.booted_kernel, 350 min(sizeof v1p->booted_kernel, 351 sizeof bootinfo.booted_kernel)); 352 /* booted dev not provided in bootinfo */ 353 init_prom_interface((struct rpb *) 354 ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys)); 355 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 356 sizeof bootinfo.booted_dev); 357 break; 358 } 359 default: 360 bootinfo_msg = "unknown bootinfo version"; 361 goto nobootinfo; 362 } 363 } else { 364 bootinfo_msg = "boot program did not pass bootinfo"; 365 nobootinfo: 366 bootinfo.ssym = (u_long)_end; 367 bootinfo.esym = (u_long)_end; 368 bootinfo.hwrpb_phys = ((struct rpb *)HWRPB_ADDR)->rpb_phys; 369 bootinfo.hwrpb_size = ((struct rpb *)HWRPB_ADDR)->rpb_size; 370 init_prom_interface((struct rpb *)HWRPB_ADDR); 371 prom_getenv(PROM_E_BOOTED_OSFLAGS, bootinfo.boot_flags, 372 sizeof bootinfo.boot_flags); 373 prom_getenv(PROM_E_BOOTED_FILE, bootinfo.booted_kernel, 374 sizeof bootinfo.booted_kernel); 375 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 376 sizeof bootinfo.booted_dev); 377 } 378 379 /* 380 * Initialize the kernel's mapping of the RPB. It's needed for 381 * lots of things. 382 */ 383 hwrpb = (struct rpb *)ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys); 384 385 #if defined(DEC_3000_300) || defined(DEC_3000_500) 386 if (hwrpb->rpb_type == ST_DEC_3000_300 || 387 hwrpb->rpb_type == ST_DEC_3000_500) { 388 prom_getenv(PROM_E_SCSIID, dec_3000_scsiid, 389 sizeof(dec_3000_scsiid)); 390 prom_getenv(PROM_E_SCSIFAST, dec_3000_scsifast, 391 sizeof(dec_3000_scsifast)); 392 } 393 #endif 394 395 /* 396 * Remember how many cycles there are per microsecond, 397 * so that we can use delay(). Round up, for safety. 398 */ 399 cycles_per_usec = (hwrpb->rpb_cc_freq + 999999) / 1000000; 400 401 /* 402 * Initalize the (temporary) bootstrap console interface, so 403 * we can use printf until the VM system starts being setup. 404 * The real console is initialized before then. 405 */ 406 init_bootstrap_console(); 407 408 /* OUTPUT NOW ALLOWED */ 409 410 /* delayed from above */ 411 if (bootinfo_msg) 412 printf("WARNING: %s (0x%lx, 0x%lx, 0x%lx)\n", 413 bootinfo_msg, bim, bip, biv); 414 415 /* 416 * Point interrupt/exception vectors to our own. 417 */ 418 alpha_pal_wrent(XentInt, ALPHA_KENTRY_INT); 419 alpha_pal_wrent(XentArith, ALPHA_KENTRY_ARITH); 420 alpha_pal_wrent(XentMM, ALPHA_KENTRY_MM); 421 alpha_pal_wrent(XentIF, ALPHA_KENTRY_IF); 422 alpha_pal_wrent(XentUna, ALPHA_KENTRY_UNA); 423 alpha_pal_wrent(XentSys, ALPHA_KENTRY_SYS); 424 425 /* 426 * Clear pending machine checks and error reports, and enable 427 * system- and processor-correctable error reporting. 428 */ 429 alpha_pal_wrmces(alpha_pal_rdmces() & 430 ~(ALPHA_MCES_DSC|ALPHA_MCES_DPC)); 431 432 /* 433 * Find out what hardware we're on, and do basic initialization. 434 */ 435 cputype = hwrpb->rpb_type; 436 if (cputype >= ncpuinit) { 437 platform_not_supported(); 438 /* NOTREACHED */ 439 } 440 (*cpuinit[cputype].init)(); 441 strcpy(cpu_model, platform.model); 442 443 /* 444 * Initalize the real console, so the the bootstrap console is 445 * no longer necessary. 446 */ 447 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 448 if (!pmap_uses_prom_console()) 449 #endif 450 (*platform.cons_init)(); 451 452 #ifdef DIAGNOSTIC 453 /* Paranoid sanity checking */ 454 455 /* We should always be running on the the primary. */ 456 assert(hwrpb->rpb_primary_cpu_id == alpha_pal_whami()); 457 458 /* 459 * On single-CPU systypes, the primary should always be CPU 0, 460 * except on Alpha 8200 systems where the CPU id is related 461 * to the VID, which is related to the Turbo Laser node id. 462 */ 463 if (cputype != ST_DEC_21000) 464 assert(hwrpb->rpb_primary_cpu_id == 0); 465 #endif 466 467 /* NO MORE FIRMWARE ACCESS ALLOWED */ 468 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 469 /* 470 * XXX (unless _PMAP_MAY_USE_PROM_CONSOLE is defined and 471 * XXX pmap_uses_prom_console() evaluates to non-zero.) 472 */ 473 #endif 474 475 /* 476 * find out this system's page size 477 */ 478 PAGE_SIZE = hwrpb->rpb_page_size; 479 if (PAGE_SIZE != 8192) 480 panic("page size %d != 8192?!", PAGE_SIZE); 481 482 /* 483 * Initialize PAGE_SIZE-dependent variables. 484 */ 485 #if defined(UVM) 486 uvm_setpagesize(); 487 #else 488 vm_set_page_size(); 489 #endif 490 491 /* 492 * Find the beginning and end of the kernel (and leave a 493 * bit of space before the beginning for the bootstrap 494 * stack). 495 */ 496 kernstart = trunc_page(kernel_text) - 2 * PAGE_SIZE; 497 #ifdef DDB 498 ksym_start = (void *)bootinfo.ssym; 499 ksym_end = (void *)bootinfo.esym; 500 kernend = (vaddr_t)round_page(ksym_end); 501 #else 502 kernend = (vaddr_t)round_page(_end); 503 #endif 504 505 kernstartpfn = atop(ALPHA_K0SEG_TO_PHYS(kernstart)); 506 kernendpfn = atop(ALPHA_K0SEG_TO_PHYS(kernend)); 507 508 /* 509 * Find out how much memory is available, by looking at 510 * the memory cluster descriptors. This also tries to do 511 * its best to detect things things that have never been seen 512 * before... 513 */ 514 mddtp = (struct mddt *)(((caddr_t)hwrpb) + hwrpb->rpb_memdat_off); 515 516 /* MDDT SANITY CHECKING */ 517 mddtweird = 0; 518 if (mddtp->mddt_cluster_cnt < 2) { 519 mddtweird = 1; 520 printf("WARNING: weird number of mem clusters: %d\n", 521 mddtp->mddt_cluster_cnt); 522 } 523 524 #if 0 525 printf("Memory cluster count: %d\n", mddtp->mddt_cluster_cnt); 526 #endif 527 528 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 529 memc = &mddtp->mddt_clusters[i]; 530 #if 0 531 printf("MEMC %d: pfn 0x%lx cnt 0x%lx usage 0x%lx\n", i, 532 memc->mddt_pfn, memc->mddt_pg_cnt, memc->mddt_usage); 533 #endif 534 totalphysmem += memc->mddt_pg_cnt; 535 if (mem_cluster_cnt < VM_PHYSSEG_MAX) { /* XXX */ 536 mem_clusters[mem_cluster_cnt].start = 537 ptoa(memc->mddt_pfn); 538 mem_clusters[mem_cluster_cnt].size = 539 ptoa(memc->mddt_pg_cnt); 540 if (memc->mddt_usage & MDDT_mbz || 541 memc->mddt_usage & MDDT_NONVOLATILE || /* XXX */ 542 memc->mddt_usage & MDDT_PALCODE) 543 mem_clusters[mem_cluster_cnt].size |= 544 PROT_READ; 545 else 546 mem_clusters[mem_cluster_cnt].size |= 547 PROT_READ | PROT_WRITE | PROT_EXEC; 548 mem_cluster_cnt++; 549 } 550 551 if (memc->mddt_usage & MDDT_mbz) { 552 mddtweird = 1; 553 printf("WARNING: mem cluster %d has weird " 554 "usage 0x%lx\n", i, memc->mddt_usage); 555 unknownmem += memc->mddt_pg_cnt; 556 continue; 557 } 558 if (memc->mddt_usage & MDDT_NONVOLATILE) { 559 /* XXX should handle these... */ 560 printf("WARNING: skipping non-volatile mem " 561 "cluster %d\n", i); 562 unusedmem += memc->mddt_pg_cnt; 563 continue; 564 } 565 if (memc->mddt_usage & MDDT_PALCODE) { 566 resvmem += memc->mddt_pg_cnt; 567 continue; 568 } 569 570 /* 571 * We have a memory cluster available for system 572 * software use. We must determine if this cluster 573 * holds the kernel. 574 */ 575 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 576 /* 577 * XXX If the kernel uses the PROM console, we only use the 578 * XXX memory after the kernel in the first system segment, 579 * XXX to avoid clobbering prom mapping, data, etc. 580 */ 581 if (!pmap_uses_prom_console() || physmem == 0) { 582 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 583 physmem += memc->mddt_pg_cnt; 584 pfn0 = memc->mddt_pfn; 585 pfn1 = memc->mddt_pfn + memc->mddt_pg_cnt; 586 if (pfn0 <= kernstartpfn && kernendpfn <= pfn1) { 587 /* 588 * Must compute the location of the kernel 589 * within the segment. 590 */ 591 #if 0 592 printf("Cluster %d contains kernel\n", i); 593 #endif 594 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 595 if (!pmap_uses_prom_console()) { 596 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 597 if (pfn0 < kernstartpfn) { 598 /* 599 * There is a chunk before the kernel. 600 */ 601 #if 0 602 printf("Loading chunk before kernel: " 603 "0x%lx / 0x%lx\n", pfn0, kernstartpfn); 604 #endif 605 #if defined(UVM) 606 uvm_page_physload(pfn0, kernstartpfn, 607 pfn0, kernstartpfn, VM_FREELIST_DEFAULT); 608 #else 609 vm_page_physload(pfn0, kernstartpfn, 610 pfn0, kernstartpfn); 611 #endif 612 } 613 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 614 } 615 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 616 if (kernendpfn < pfn1) { 617 /* 618 * There is a chunk after the kernel. 619 */ 620 #if 0 621 printf("Loading chunk after kernel: " 622 "0x%lx / 0x%lx\n", kernendpfn, pfn1); 623 #endif 624 #if defined(UVM) 625 uvm_page_physload(kernendpfn, pfn1, 626 kernendpfn, pfn1, VM_FREELIST_DEFAULT); 627 #else 628 vm_page_physload(kernendpfn, pfn1, 629 kernendpfn, pfn1); 630 #endif 631 } 632 } else { 633 /* 634 * Just load this cluster as one chunk. 635 */ 636 #if 0 637 printf("Loading cluster %d: 0x%lx / 0x%lx\n", i, 638 pfn0, pfn1); 639 #endif 640 #if defined(UVM) 641 uvm_page_physload(pfn0, pfn1, pfn0, pfn1, 642 VM_FREELIST_DEFAULT); 643 #else 644 vm_page_physload(pfn0, pfn1, pfn0, pfn1); 645 #endif 646 } 647 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 648 } 649 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 650 } 651 652 /* 653 * Dump out the MDDT if it looks odd... 654 */ 655 if (mddtweird) { 656 printf("\n"); 657 printf("complete memory cluster information:\n"); 658 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 659 printf("mddt %d:\n", i); 660 printf("\tpfn %lx\n", 661 mddtp->mddt_clusters[i].mddt_pfn); 662 printf("\tcnt %lx\n", 663 mddtp->mddt_clusters[i].mddt_pg_cnt); 664 printf("\ttest %lx\n", 665 mddtp->mddt_clusters[i].mddt_pg_test); 666 printf("\tbva %lx\n", 667 mddtp->mddt_clusters[i].mddt_v_bitaddr); 668 printf("\tbpa %lx\n", 669 mddtp->mddt_clusters[i].mddt_p_bitaddr); 670 printf("\tbcksum %lx\n", 671 mddtp->mddt_clusters[i].mddt_bit_cksum); 672 printf("\tusage %lx\n", 673 mddtp->mddt_clusters[i].mddt_usage); 674 } 675 printf("\n"); 676 } 677 678 if (totalphysmem == 0) 679 panic("can't happen: system seems to have no memory!"); 680 681 #ifdef LIMITMEM 682 /* 683 * XXX Kludge so we can run on machines with memory larger 684 * XXX than 1G until all device drivers are converted to 685 * XXX use bus_dma. (Relies on the fact that vm_physmem 686 * XXX sorted in order of increasing addresses.) 687 */ 688 if (vm_physmem[vm_nphysseg - 1].end > atop(LIMITMEM * 1024 * 1024)) { 689 690 printf("******** LIMITING MEMORY TO %dMB **********\n", 691 LIMITMEM); 692 693 do { 694 u_long ovf; 695 696 vps = &vm_physmem[vm_nphysseg - 1]; 697 698 if (vps->start >= atop(LIMITMEM * 1024 * 1024)) { 699 /* 700 * If the start is too high, just drop 701 * the whole segment. 702 * 703 * XXX can start != avail_start in this 704 * XXX case? wouldn't that mean that 705 * XXX some memory was stolen above the 706 * XXX limit? What to do? 707 */ 708 ovf = vps->end - vps->start; 709 vm_nphysseg--; 710 } else { 711 /* 712 * If the start is OK, calculate how much 713 * to drop and drop it. 714 */ 715 ovf = vps->end - atop(LIMITMEM * 1024 * 1024); 716 vps->end -= ovf; 717 vps->avail_end -= ovf; 718 } 719 physmem -= ovf; 720 unusedmem += ovf; 721 } while (vps->end > atop(LIMITMEM * 1024 * 1024)); 722 } 723 #endif /* LIMITMEM */ 724 725 maxmem = physmem; 726 727 #if 0 728 printf("totalphysmem = %d\n", totalphysmem); 729 printf("physmem = %d\n", physmem); 730 printf("resvmem = %d\n", resvmem); 731 printf("unusedmem = %d\n", unusedmem); 732 printf("unknownmem = %d\n", unknownmem); 733 #endif 734 735 /* 736 * Adjust some parameters if the amount of physmem 737 * available would cause us to croak. This is completely 738 * eyeballed and isn't meant to be the final answer. 739 * vm_phys_size is probably the only one to really worry 740 * about. 741 * 742 * It's for booting a GENERIC kernel on a large memory platform. 743 */ 744 if (physmem >= atop(128 * 1024 * 1024)) { 745 vm_mbuf_size <<= 1; 746 vm_kmem_size <<= 3; 747 vm_phys_size <<= 2; 748 } 749 750 /* 751 * Initialize error message buffer (at end of core). 752 */ 753 { 754 size_t sz = round_page(MSGBUFSIZE); 755 756 vps = &vm_physmem[vm_nphysseg - 1]; 757 758 /* shrink so that it'll fit in the last segment */ 759 if ((vps->avail_end - vps->avail_start) < atop(sz)) 760 sz = ptoa(vps->avail_end - vps->avail_start); 761 762 vps->end -= atop(sz); 763 vps->avail_end -= atop(sz); 764 msgbufaddr = (caddr_t) ALPHA_PHYS_TO_K0SEG(ptoa(vps->end)); 765 initmsgbuf(msgbufaddr, sz); 766 767 /* Remove the last segment if it now has no pages. */ 768 if (vps->start == vps->end) 769 vm_nphysseg--; 770 771 /* warn if the message buffer had to be shrunk */ 772 if (sz != round_page(MSGBUFSIZE)) 773 printf("WARNING: %d bytes not available for msgbuf in last cluster (%d used)\n", 774 round_page(MSGBUFSIZE), sz); 775 776 } 777 778 /* 779 * Init mapping for u page(s) for proc 0 780 */ 781 proc0.p_addr = proc0paddr = 782 (struct user *)pmap_steal_memory(UPAGES * PAGE_SIZE, NULL, NULL); 783 784 /* 785 * Allocate space for system data structures. These data structures 786 * are allocated here instead of cpu_startup() because physical 787 * memory is directly addressable. We don't have to map these into 788 * virtual address space. 789 */ 790 size = (vsize_t)allocsys(0); 791 v = (caddr_t)pmap_steal_memory(size, NULL, NULL); 792 if ((allocsys(v) - v) != size) 793 panic("alpha_init: table size inconsistency"); 794 795 /* 796 * Initialize the virtual memory system, and set the 797 * page table base register in proc 0's PCB. 798 */ 799 pmap_bootstrap(ALPHA_PHYS_TO_K0SEG(ptb << PGSHIFT), 800 hwrpb->rpb_max_asn); 801 802 /* 803 * Initialize the rest of proc 0's PCB, and cache its physical 804 * address. 805 */ 806 proc0.p_md.md_pcbpaddr = 807 (struct pcb *)ALPHA_K0SEG_TO_PHYS((vaddr_t)&proc0paddr->u_pcb); 808 809 /* 810 * Set the kernel sp, reserving space for an (empty) trapframe, 811 * and make proc0's trapframe pointer point to it for sanity. 812 */ 813 proc0paddr->u_pcb.pcb_hw.apcb_ksp = 814 (u_int64_t)proc0paddr + USPACE - sizeof(struct trapframe); 815 proc0.p_md.md_tf = 816 (struct trapframe *)proc0paddr->u_pcb.pcb_hw.apcb_ksp; 817 818 /* 819 * Look at arguments passed to us and compute boothowto. 820 */ 821 822 boothowto = RB_SINGLE; 823 #ifdef KADB 824 boothowto |= RB_KDB; 825 #endif 826 for (p = bootinfo.boot_flags; p && *p != '\0'; p++) { 827 /* 828 * Note that we'd really like to differentiate case here, 829 * but the Alpha AXP Architecture Reference Manual 830 * says that we shouldn't. 831 */ 832 switch (*p) { 833 case 'a': /* autoboot */ 834 case 'A': 835 boothowto &= ~RB_SINGLE; 836 break; 837 838 #ifdef DEBUG 839 case 'c': /* crash dump immediately after autoconfig */ 840 case 'C': 841 boothowto |= RB_DUMP; 842 break; 843 #endif 844 845 #if defined(KGDB) || defined(DDB) 846 case 'd': /* break into the kernel debugger ASAP */ 847 case 'D': 848 boothowto |= RB_KDB; 849 break; 850 #endif 851 852 case 'h': /* always halt, never reboot */ 853 case 'H': 854 boothowto |= RB_HALT; 855 break; 856 857 #if 0 858 case 'm': /* mini root present in memory */ 859 case 'M': 860 boothowto |= RB_MINIROOT; 861 break; 862 #endif 863 864 case 'n': /* askname */ 865 case 'N': 866 boothowto |= RB_ASKNAME; 867 break; 868 869 case 's': /* single-user (default, supported for sanity) */ 870 case 'S': 871 boothowto |= RB_SINGLE; 872 break; 873 874 case '-': 875 /* 876 * Just ignore this. It's not required, but it's 877 * common for it to be passed regardless. 878 */ 879 break; 880 881 default: 882 printf("Unrecognized boot flag '%c'.\n", *p); 883 break; 884 } 885 } 886 887 888 /* 889 * Figure out the number of cpus in the box, from RPB fields. 890 * Really. We mean it. 891 */ 892 for (i = 0; i < hwrpb->rpb_pcs_cnt; i++) { 893 struct pcs *pcsp; 894 895 pcsp = (struct pcs *)((char *)hwrpb + hwrpb->rpb_pcs_off + 896 (i * hwrpb->rpb_pcs_size)); 897 if ((pcsp->pcs_flags & PCS_PP) != 0) 898 ncpus++; 899 } 900 901 /* 902 * Initialize debuggers, and break into them if appropriate. 903 */ 904 #ifdef DDB 905 db_machine_init(); 906 ddb_init(ksym_start, ksym_end); 907 if (boothowto & RB_KDB) 908 Debugger(); 909 #endif 910 #ifdef KGDB 911 if (boothowto & RB_KDB) 912 kgdb_connect(0); 913 #endif 914 /* 915 * Figure out our clock frequency, from RPB fields. 916 */ 917 hz = hwrpb->rpb_intr_freq >> 12; 918 if (!(60 <= hz && hz <= 10240)) { 919 hz = 1024; 920 #ifdef DIAGNOSTIC 921 printf("WARNING: unbelievable rpb_intr_freq: %ld (%d hz)\n", 922 hwrpb->rpb_intr_freq, hz); 923 #endif 924 } 925 } 926 927 /* 928 * Allocate space for system data structures. We are given 929 * a starting virtual address and we return a final virtual 930 * address; along the way we set each data structure pointer. 931 * 932 * We call allocsys() with 0 to find out how much space we want, 933 * allocate that much and fill it with zeroes, and the call 934 * allocsys() again with the correct base virtual address. 935 */ 936 caddr_t 937 allocsys(v) 938 caddr_t v; 939 { 940 941 #define valloc(name, type, num) \ 942 (name) = (type *)v; v = (caddr_t)ALIGN((name)+(num)) 943 944 #ifdef REAL_CLISTS 945 valloc(cfree, struct cblock, nclist); 946 #endif 947 valloc(callout, struct callout, ncallout); 948 #ifdef SYSVSHM 949 valloc(shmsegs, struct shmid_ds, shminfo.shmmni); 950 #endif 951 #ifdef SYSVSEM 952 valloc(sema, struct semid_ds, seminfo.semmni); 953 valloc(sem, struct sem, seminfo.semmns); 954 /* This is pretty disgusting! */ 955 valloc(semu, int, (seminfo.semmnu * seminfo.semusz) / sizeof(int)); 956 #endif 957 #ifdef SYSVMSG 958 valloc(msgpool, char, msginfo.msgmax); 959 valloc(msgmaps, struct msgmap, msginfo.msgseg); 960 valloc(msghdrs, struct msg, msginfo.msgtql); 961 valloc(msqids, struct msqid_ds, msginfo.msgmni); 962 #endif 963 964 /* 965 * Determine how many buffers to allocate. 966 * We allocate 10% of memory for buffer space. Insure a 967 * minimum of 16 buffers. We allocate 1/2 as many swap buffer 968 * headers as file i/o buffers. 969 */ 970 if (bufpages == 0) 971 bufpages = (physmem * 10) / (CLSIZE * 100); 972 if (nbuf == 0) { 973 nbuf = bufpages; 974 if (nbuf < 16) 975 nbuf = 16; 976 } 977 if (nswbuf == 0) { 978 nswbuf = (nbuf / 2) &~ 1; /* force even */ 979 if (nswbuf > 256) 980 nswbuf = 256; /* sanity */ 981 } 982 #if !defined(UVM) 983 valloc(swbuf, struct buf, nswbuf); 984 #endif 985 valloc(buf, struct buf, nbuf); 986 987 /* 988 * There appears to be a correlation between the number 989 * of processor slots defined in the HWRPB and the whami 990 * value that can be returned. 991 */ 992 valloc(mchkinfo_all_cpus, struct mchkinfo, hwrpb->rpb_pcs_cnt); 993 994 return (v); 995 #undef valloc 996 } 997 998 void 999 consinit() 1000 { 1001 1002 /* 1003 * Everything related to console initialization is done 1004 * in alpha_init(). 1005 */ 1006 #if defined(DIAGNOSTIC) && defined(_PMAP_MAY_USE_PROM_CONSOLE) 1007 printf("consinit: %susing prom console\n", 1008 pmap_uses_prom_console() ? "" : "not "); 1009 #endif 1010 } 1011 1012 #include "pckbc.h" 1013 #include "pckbd.h" 1014 #if (NPCKBC > 0) && (NPCKBD == 0) 1015 1016 #include <machine/bus.h> 1017 #include <dev/isa/pckbcvar.h> 1018 1019 /* 1020 * This is called by the pbkbc driver if no pckbd is configured. 1021 * On the i386, it is used to glue in the old, deprecated console 1022 * code. On the Alpha, it does nothing. 1023 */ 1024 int 1025 pckbc_machdep_cnattach(kbctag, kbcslot) 1026 pckbc_tag_t kbctag; 1027 pckbc_slot_t kbcslot; 1028 { 1029 1030 return (ENXIO); 1031 } 1032 #endif /* NPCKBC > 0 && NPCKBD == 0 */ 1033 1034 void 1035 cpu_startup() 1036 { 1037 register unsigned i; 1038 int base, residual; 1039 vaddr_t minaddr, maxaddr; 1040 vsize_t size; 1041 #if defined(DEBUG) 1042 extern int pmapdebug; 1043 int opmapdebug = pmapdebug; 1044 1045 pmapdebug = 0; 1046 #endif 1047 1048 /* 1049 * Good {morning,afternoon,evening,night}. 1050 */ 1051 printf(version); 1052 identifycpu(); 1053 printf("real mem = %lu (%lu reserved for PROM, %lu used by NetBSD)\n", 1054 ((psize_t) totalphysmem << (psize_t) PAGE_SHIFT), 1055 ptoa(resvmem), ptoa(physmem)); 1056 if (unusedmem) 1057 printf("WARNING: unused memory = %d bytes\n", ctob(unusedmem)); 1058 if (unknownmem) 1059 printf("WARNING: %d bytes of memory with unknown purpose\n", 1060 ctob(unknownmem)); 1061 1062 /* 1063 * Allocate virtual address space for file I/O buffers. 1064 * Note they are different than the array of headers, 'buf', 1065 * and usually occupy more virtual memory than physical. 1066 */ 1067 size = MAXBSIZE * nbuf; 1068 #if defined(UVM) 1069 if (uvm_map(kernel_map, (vaddr_t *) &buffers, round_page(size), 1070 NULL, UVM_UNKNOWN_OFFSET, 1071 UVM_MAPFLAG(UVM_PROT_NONE, UVM_PROT_NONE, UVM_INH_NONE, 1072 UVM_ADV_NORMAL, 0)) != KERN_SUCCESS) 1073 panic("startup: cannot allocate VM for buffers"); 1074 #else 1075 buffer_map = kmem_suballoc(kernel_map, (vaddr_t *)&buffers, 1076 &maxaddr, size, TRUE); 1077 minaddr = (vaddr_t)buffers; 1078 if (vm_map_find(buffer_map, vm_object_allocate(size), (vaddr_t)0, 1079 &minaddr, size, FALSE) != KERN_SUCCESS) 1080 panic("startup: cannot allocate buffers"); 1081 #endif /* UVM */ 1082 base = bufpages / nbuf; 1083 residual = bufpages % nbuf; 1084 for (i = 0; i < nbuf; i++) { 1085 #if defined(UVM) 1086 vsize_t curbufsize; 1087 vaddr_t curbuf; 1088 struct vm_page *pg; 1089 1090 /* 1091 * Each buffer has MAXBSIZE bytes of VM space allocated. Of 1092 * that MAXBSIZE space, we allocate and map (base+1) pages 1093 * for the first "residual" buffers, and then we allocate 1094 * "base" pages for the rest. 1095 */ 1096 curbuf = (vaddr_t) buffers + (i * MAXBSIZE); 1097 curbufsize = CLBYTES * ((i < residual) ? (base+1) : base); 1098 1099 while (curbufsize) { 1100 pg = uvm_pagealloc(NULL, 0, NULL); 1101 if (pg == NULL) 1102 panic("cpu_startup: not enough memory for " 1103 "buffer cache"); 1104 #if defined(PMAP_NEW) 1105 pmap_kenter_pgs(curbuf, &pg, 1); 1106 #else 1107 pmap_enter(kernel_map->pmap, curbuf, 1108 VM_PAGE_TO_PHYS(pg), VM_PROT_ALL, TRUE); 1109 #endif 1110 curbuf += PAGE_SIZE; 1111 curbufsize -= PAGE_SIZE; 1112 } 1113 #else /* ! UVM */ 1114 vsize_t curbufsize; 1115 vaddr_t curbuf; 1116 1117 /* 1118 * First <residual> buffers get (base+1) physical pages 1119 * allocated for them. The rest get (base) physical pages. 1120 * 1121 * The rest of each buffer occupies virtual space, 1122 * but has no physical memory allocated for it. 1123 */ 1124 curbuf = (vaddr_t)buffers + i * MAXBSIZE; 1125 curbufsize = CLBYTES * (i < residual ? base+1 : base); 1126 vm_map_pageable(buffer_map, curbuf, curbuf+curbufsize, FALSE); 1127 vm_map_simplify(buffer_map, curbuf); 1128 #endif /* UVM */ 1129 } 1130 /* 1131 * Allocate a submap for exec arguments. This map effectively 1132 * limits the number of processes exec'ing at any time. 1133 */ 1134 #if defined(UVM) 1135 exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 1136 16 * NCARGS, TRUE, FALSE, NULL); 1137 #else 1138 exec_map = kmem_suballoc(kernel_map, &minaddr, &maxaddr, 1139 16 * NCARGS, TRUE); 1140 #endif 1141 1142 /* 1143 * Allocate a submap for physio 1144 */ 1145 #if defined(UVM) 1146 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 1147 VM_PHYS_SIZE, TRUE, FALSE, NULL); 1148 #else 1149 phys_map = kmem_suballoc(kernel_map, &minaddr, &maxaddr, 1150 VM_PHYS_SIZE, TRUE); 1151 #endif 1152 1153 /* 1154 * Finally, allocate mbuf cluster submap. 1155 */ 1156 #if defined(UVM) 1157 mb_map = uvm_km_suballoc(kernel_map, (vaddr_t *)&mbutl, &maxaddr, 1158 VM_MBUF_SIZE, FALSE, FALSE, NULL); 1159 #else 1160 mb_map = kmem_suballoc(kernel_map, (vaddr_t *)&mbutl, &maxaddr, 1161 VM_MBUF_SIZE, FALSE); 1162 #endif 1163 /* 1164 * Initialize callouts 1165 */ 1166 callfree = callout; 1167 for (i = 1; i < ncallout; i++) 1168 callout[i-1].c_next = &callout[i]; 1169 callout[i-1].c_next = NULL; 1170 1171 #if defined(DEBUG) 1172 pmapdebug = opmapdebug; 1173 #endif 1174 #if defined(UVM) 1175 printf("avail mem = %ld\n", (long)ptoa(uvmexp.free)); 1176 #else 1177 printf("avail mem = %ld\n", (long)ptoa(cnt.v_free_count)); 1178 #endif 1179 #if 0 1180 { 1181 extern u_long pmap_pages_stolen; 1182 printf("stolen memory for VM structures = %ld bytes\n", 1183 pmap_pages_stolen * PAGE_SIZE); 1184 } 1185 #endif 1186 printf("using %ld buffers containing %ld bytes of memory\n", 1187 (long)nbuf, (long)(bufpages * CLBYTES)); 1188 1189 /* 1190 * Set up buffers, so they can be used to read disk labels. 1191 */ 1192 bufinit(); 1193 1194 /* 1195 * Configure the system. 1196 */ 1197 configure(); 1198 1199 /* 1200 * Note that bootstrapping is finished, and set the HWRPB up 1201 * to do restarts. 1202 */ 1203 hwrpb_restart_setup(); 1204 } 1205 1206 /* 1207 * Retrieve the platform name from the DSR. 1208 */ 1209 const char * 1210 alpha_dsr_sysname() 1211 { 1212 struct dsrdb *dsr; 1213 const char *sysname; 1214 1215 /* 1216 * DSR does not exist on early HWRPB versions. 1217 */ 1218 if (hwrpb->rpb_version < HWRPB_DSRDB_MINVERS) 1219 return (NULL); 1220 1221 dsr = (struct dsrdb *)(((caddr_t)hwrpb) + hwrpb->rpb_dsrdb_off); 1222 sysname = (const char *)((caddr_t)dsr + (dsr->dsr_sysname_off + 1223 sizeof(u_int64_t))); 1224 return (sysname); 1225 } 1226 1227 /* 1228 * Lookup the system specified system variation in the provided table, 1229 * returning the model string on match. 1230 */ 1231 const char * 1232 alpha_variation_name(variation, avtp) 1233 u_int64_t variation; 1234 const struct alpha_variation_table *avtp; 1235 { 1236 int i; 1237 1238 for (i = 0; avtp[i].avt_model != NULL; i++) 1239 if (avtp[i].avt_variation == variation) 1240 return (avtp[i].avt_model); 1241 return (NULL); 1242 } 1243 1244 /* 1245 * Generate a default platform name based for unknown system variations. 1246 */ 1247 const char * 1248 alpha_unknown_sysname() 1249 { 1250 static char s[128]; /* safe size */ 1251 1252 sprintf(s, "%s family, unknown model variation 0x%lx", 1253 platform.family, hwrpb->rpb_variation & SV_ST_MASK); 1254 return ((const char *)s); 1255 } 1256 1257 void 1258 identifycpu() 1259 { 1260 1261 /* 1262 * print out CPU identification information. 1263 */ 1264 printf("%s, %ldMHz\n", cpu_model, 1265 hwrpb->rpb_cc_freq / 1000000); /* XXX true for 21164? */ 1266 printf("%ld byte page size, %d processor%s.\n", 1267 hwrpb->rpb_page_size, ncpus, ncpus == 1 ? "" : "s"); 1268 #if 0 1269 /* this isn't defined for any systems that we run on? */ 1270 printf("serial number 0x%lx 0x%lx\n", 1271 ((long *)hwrpb->rpb_ssn)[0], ((long *)hwrpb->rpb_ssn)[1]); 1272 1273 /* and these aren't particularly useful! */ 1274 printf("variation: 0x%lx, revision 0x%lx\n", 1275 hwrpb->rpb_variation, *(long *)hwrpb->rpb_revision); 1276 #endif 1277 } 1278 1279 int waittime = -1; 1280 struct pcb dumppcb; 1281 1282 void 1283 cpu_reboot(howto, bootstr) 1284 int howto; 1285 char *bootstr; 1286 { 1287 extern int cold; 1288 1289 /* If system is cold, just halt. */ 1290 if (cold) { 1291 howto |= RB_HALT; 1292 goto haltsys; 1293 } 1294 1295 /* If "always halt" was specified as a boot flag, obey. */ 1296 if ((boothowto & RB_HALT) != 0) 1297 howto |= RB_HALT; 1298 1299 boothowto = howto; 1300 if ((howto & RB_NOSYNC) == 0 && waittime < 0) { 1301 waittime = 0; 1302 vfs_shutdown(); 1303 /* 1304 * If we've been adjusting the clock, the todr 1305 * will be out of synch; adjust it now. 1306 */ 1307 resettodr(); 1308 } 1309 1310 /* Disable interrupts. */ 1311 splhigh(); 1312 1313 /* If rebooting and a dump is requested do it. */ 1314 #if 0 1315 if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP) 1316 #else 1317 if (howto & RB_DUMP) 1318 #endif 1319 dumpsys(); 1320 1321 haltsys: 1322 1323 /* run any shutdown hooks */ 1324 doshutdownhooks(); 1325 1326 #ifdef BOOTKEY 1327 printf("hit any key to %s...\n", howto & RB_HALT ? "halt" : "reboot"); 1328 cnpollc(1); /* for proper keyboard command handling */ 1329 cngetc(); 1330 cnpollc(0); 1331 printf("\n"); 1332 #endif 1333 1334 /* Finally, powerdown/halt/reboot the system. */ 1335 if ((howto && RB_POWERDOWN) == RB_POWERDOWN && 1336 platform.powerdown != NULL) { 1337 (*platform.powerdown)(); 1338 printf("WARNING: powerdown failed!\n"); 1339 } 1340 printf("%s\n\n", howto & RB_HALT ? "halted." : "rebooting..."); 1341 prom_halt(howto & RB_HALT); 1342 /*NOTREACHED*/ 1343 } 1344 1345 /* 1346 * These variables are needed by /sbin/savecore 1347 */ 1348 u_long dumpmag = 0x8fca0101; /* magic number */ 1349 int dumpsize = 0; /* pages */ 1350 long dumplo = 0; /* blocks */ 1351 1352 /* 1353 * cpu_dumpsize: calculate size of machine-dependent kernel core dump headers. 1354 */ 1355 int 1356 cpu_dumpsize() 1357 { 1358 int size; 1359 1360 size = ALIGN(sizeof(kcore_seg_t)) + ALIGN(sizeof(cpu_kcore_hdr_t)) + 1361 ALIGN(mem_cluster_cnt * sizeof(phys_ram_seg_t)); 1362 if (roundup(size, dbtob(1)) != dbtob(1)) 1363 return -1; 1364 1365 return (1); 1366 } 1367 1368 /* 1369 * cpu_dump_mempagecnt: calculate size of RAM (in pages) to be dumped. 1370 */ 1371 u_long 1372 cpu_dump_mempagecnt() 1373 { 1374 u_long i, n; 1375 1376 n = 0; 1377 for (i = 0; i < mem_cluster_cnt; i++) 1378 n += atop(mem_clusters[i].size); 1379 return (n); 1380 } 1381 1382 /* 1383 * cpu_dump: dump machine-dependent kernel core dump headers. 1384 */ 1385 int 1386 cpu_dump() 1387 { 1388 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1389 char buf[dbtob(1)]; 1390 kcore_seg_t *segp; 1391 cpu_kcore_hdr_t *cpuhdrp; 1392 phys_ram_seg_t *memsegp; 1393 int i; 1394 1395 dump = bdevsw[major(dumpdev)].d_dump; 1396 1397 bzero(buf, sizeof buf); 1398 segp = (kcore_seg_t *)buf; 1399 cpuhdrp = (cpu_kcore_hdr_t *)&buf[ALIGN(sizeof(*segp))]; 1400 memsegp = (phys_ram_seg_t *)&buf[ ALIGN(sizeof(*segp)) + 1401 ALIGN(sizeof(*cpuhdrp))]; 1402 1403 /* 1404 * Generate a segment header. 1405 */ 1406 CORE_SETMAGIC(*segp, KCORE_MAGIC, MID_MACHINE, CORE_CPU); 1407 segp->c_size = dbtob(1) - ALIGN(sizeof(*segp)); 1408 1409 /* 1410 * Add the machine-dependent header info. 1411 */ 1412 cpuhdrp->lev1map_pa = ALPHA_K0SEG_TO_PHYS((vaddr_t)kernel_lev1map); 1413 cpuhdrp->page_size = PAGE_SIZE; 1414 cpuhdrp->nmemsegs = mem_cluster_cnt; 1415 1416 /* 1417 * Fill in the memory segment descriptors. 1418 */ 1419 for (i = 0; i < mem_cluster_cnt; i++) { 1420 memsegp[i].start = mem_clusters[i].start; 1421 memsegp[i].size = mem_clusters[i].size & ~PAGE_MASK; 1422 } 1423 1424 return (dump(dumpdev, dumplo, (caddr_t)buf, dbtob(1))); 1425 } 1426 1427 /* 1428 * This is called by main to set dumplo and dumpsize. 1429 * Dumps always skip the first CLBYTES of disk space 1430 * in case there might be a disk label stored there. 1431 * If there is extra space, put dump at the end to 1432 * reduce the chance that swapping trashes it. 1433 */ 1434 void 1435 cpu_dumpconf() 1436 { 1437 int nblks, dumpblks; /* size of dump area */ 1438 int maj; 1439 1440 if (dumpdev == NODEV) 1441 goto bad; 1442 maj = major(dumpdev); 1443 if (maj < 0 || maj >= nblkdev) 1444 panic("dumpconf: bad dumpdev=0x%x", dumpdev); 1445 if (bdevsw[maj].d_psize == NULL) 1446 goto bad; 1447 nblks = (*bdevsw[maj].d_psize)(dumpdev); 1448 if (nblks <= ctod(1)) 1449 goto bad; 1450 1451 dumpblks = cpu_dumpsize(); 1452 if (dumpblks < 0) 1453 goto bad; 1454 dumpblks += ctod(cpu_dump_mempagecnt()); 1455 1456 /* If dump won't fit (incl. room for possible label), punt. */ 1457 if (dumpblks > (nblks - ctod(1))) 1458 goto bad; 1459 1460 /* Put dump at end of partition */ 1461 dumplo = nblks - dumpblks; 1462 1463 /* dumpsize is in page units, and doesn't include headers. */ 1464 dumpsize = cpu_dump_mempagecnt(); 1465 return; 1466 1467 bad: 1468 dumpsize = 0; 1469 return; 1470 } 1471 1472 /* 1473 * Dump the kernel's image to the swap partition. 1474 */ 1475 #define BYTES_PER_DUMP NBPG 1476 1477 void 1478 dumpsys() 1479 { 1480 u_long totalbytesleft, bytes, i, n, memcl; 1481 u_long maddr; 1482 int psize; 1483 daddr_t blkno; 1484 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1485 int error; 1486 1487 /* Save registers. */ 1488 savectx(&dumppcb); 1489 1490 msgbufenabled = 0; /* don't record dump msgs in msgbuf */ 1491 if (dumpdev == NODEV) 1492 return; 1493 1494 /* 1495 * For dumps during autoconfiguration, 1496 * if dump device has already configured... 1497 */ 1498 if (dumpsize == 0) 1499 cpu_dumpconf(); 1500 if (dumplo <= 0) { 1501 printf("\ndump to dev %u,%u not possible\n", major(dumpdev), 1502 minor(dumpdev)); 1503 return; 1504 } 1505 printf("\ndumping to dev %u,%u offset %ld\n", major(dumpdev), 1506 minor(dumpdev), dumplo); 1507 1508 psize = (*bdevsw[major(dumpdev)].d_psize)(dumpdev); 1509 printf("dump "); 1510 if (psize == -1) { 1511 printf("area unavailable\n"); 1512 return; 1513 } 1514 1515 /* XXX should purge all outstanding keystrokes. */ 1516 1517 if ((error = cpu_dump()) != 0) 1518 goto err; 1519 1520 totalbytesleft = ptoa(cpu_dump_mempagecnt()); 1521 blkno = dumplo + cpu_dumpsize(); 1522 dump = bdevsw[major(dumpdev)].d_dump; 1523 error = 0; 1524 1525 for (memcl = 0; memcl < mem_cluster_cnt; memcl++) { 1526 maddr = mem_clusters[memcl].start; 1527 bytes = mem_clusters[memcl].size & ~PAGE_MASK; 1528 1529 for (i = 0; i < bytes; i += n, totalbytesleft -= n) { 1530 1531 /* Print out how many MBs we to go. */ 1532 if ((totalbytesleft % (1024*1024)) == 0) 1533 printf("%d ", totalbytesleft / (1024 * 1024)); 1534 1535 /* Limit size for next transfer. */ 1536 n = bytes - i; 1537 if (n > BYTES_PER_DUMP) 1538 n = BYTES_PER_DUMP; 1539 1540 error = (*dump)(dumpdev, blkno, 1541 (caddr_t)ALPHA_PHYS_TO_K0SEG(maddr), n); 1542 if (error) 1543 goto err; 1544 maddr += n; 1545 blkno += btodb(n); /* XXX? */ 1546 1547 /* XXX should look for keystrokes, to cancel. */ 1548 } 1549 } 1550 1551 err: 1552 switch (error) { 1553 1554 case ENXIO: 1555 printf("device bad\n"); 1556 break; 1557 1558 case EFAULT: 1559 printf("device not ready\n"); 1560 break; 1561 1562 case EINVAL: 1563 printf("area improper\n"); 1564 break; 1565 1566 case EIO: 1567 printf("i/o error\n"); 1568 break; 1569 1570 case EINTR: 1571 printf("aborted from console\n"); 1572 break; 1573 1574 case 0: 1575 printf("succeeded\n"); 1576 break; 1577 1578 default: 1579 printf("error %d\n", error); 1580 break; 1581 } 1582 printf("\n\n"); 1583 delay(1000); 1584 } 1585 1586 void 1587 frametoreg(framep, regp) 1588 struct trapframe *framep; 1589 struct reg *regp; 1590 { 1591 1592 regp->r_regs[R_V0] = framep->tf_regs[FRAME_V0]; 1593 regp->r_regs[R_T0] = framep->tf_regs[FRAME_T0]; 1594 regp->r_regs[R_T1] = framep->tf_regs[FRAME_T1]; 1595 regp->r_regs[R_T2] = framep->tf_regs[FRAME_T2]; 1596 regp->r_regs[R_T3] = framep->tf_regs[FRAME_T3]; 1597 regp->r_regs[R_T4] = framep->tf_regs[FRAME_T4]; 1598 regp->r_regs[R_T5] = framep->tf_regs[FRAME_T5]; 1599 regp->r_regs[R_T6] = framep->tf_regs[FRAME_T6]; 1600 regp->r_regs[R_T7] = framep->tf_regs[FRAME_T7]; 1601 regp->r_regs[R_S0] = framep->tf_regs[FRAME_S0]; 1602 regp->r_regs[R_S1] = framep->tf_regs[FRAME_S1]; 1603 regp->r_regs[R_S2] = framep->tf_regs[FRAME_S2]; 1604 regp->r_regs[R_S3] = framep->tf_regs[FRAME_S3]; 1605 regp->r_regs[R_S4] = framep->tf_regs[FRAME_S4]; 1606 regp->r_regs[R_S5] = framep->tf_regs[FRAME_S5]; 1607 regp->r_regs[R_S6] = framep->tf_regs[FRAME_S6]; 1608 regp->r_regs[R_A0] = framep->tf_regs[FRAME_A0]; 1609 regp->r_regs[R_A1] = framep->tf_regs[FRAME_A1]; 1610 regp->r_regs[R_A2] = framep->tf_regs[FRAME_A2]; 1611 regp->r_regs[R_A3] = framep->tf_regs[FRAME_A3]; 1612 regp->r_regs[R_A4] = framep->tf_regs[FRAME_A4]; 1613 regp->r_regs[R_A5] = framep->tf_regs[FRAME_A5]; 1614 regp->r_regs[R_T8] = framep->tf_regs[FRAME_T8]; 1615 regp->r_regs[R_T9] = framep->tf_regs[FRAME_T9]; 1616 regp->r_regs[R_T10] = framep->tf_regs[FRAME_T10]; 1617 regp->r_regs[R_T11] = framep->tf_regs[FRAME_T11]; 1618 regp->r_regs[R_RA] = framep->tf_regs[FRAME_RA]; 1619 regp->r_regs[R_T12] = framep->tf_regs[FRAME_T12]; 1620 regp->r_regs[R_AT] = framep->tf_regs[FRAME_AT]; 1621 regp->r_regs[R_GP] = framep->tf_regs[FRAME_GP]; 1622 /* regp->r_regs[R_SP] = framep->tf_regs[FRAME_SP]; XXX */ 1623 regp->r_regs[R_ZERO] = 0; 1624 } 1625 1626 void 1627 regtoframe(regp, framep) 1628 struct reg *regp; 1629 struct trapframe *framep; 1630 { 1631 1632 framep->tf_regs[FRAME_V0] = regp->r_regs[R_V0]; 1633 framep->tf_regs[FRAME_T0] = regp->r_regs[R_T0]; 1634 framep->tf_regs[FRAME_T1] = regp->r_regs[R_T1]; 1635 framep->tf_regs[FRAME_T2] = regp->r_regs[R_T2]; 1636 framep->tf_regs[FRAME_T3] = regp->r_regs[R_T3]; 1637 framep->tf_regs[FRAME_T4] = regp->r_regs[R_T4]; 1638 framep->tf_regs[FRAME_T5] = regp->r_regs[R_T5]; 1639 framep->tf_regs[FRAME_T6] = regp->r_regs[R_T6]; 1640 framep->tf_regs[FRAME_T7] = regp->r_regs[R_T7]; 1641 framep->tf_regs[FRAME_S0] = regp->r_regs[R_S0]; 1642 framep->tf_regs[FRAME_S1] = regp->r_regs[R_S1]; 1643 framep->tf_regs[FRAME_S2] = regp->r_regs[R_S2]; 1644 framep->tf_regs[FRAME_S3] = regp->r_regs[R_S3]; 1645 framep->tf_regs[FRAME_S4] = regp->r_regs[R_S4]; 1646 framep->tf_regs[FRAME_S5] = regp->r_regs[R_S5]; 1647 framep->tf_regs[FRAME_S6] = regp->r_regs[R_S6]; 1648 framep->tf_regs[FRAME_A0] = regp->r_regs[R_A0]; 1649 framep->tf_regs[FRAME_A1] = regp->r_regs[R_A1]; 1650 framep->tf_regs[FRAME_A2] = regp->r_regs[R_A2]; 1651 framep->tf_regs[FRAME_A3] = regp->r_regs[R_A3]; 1652 framep->tf_regs[FRAME_A4] = regp->r_regs[R_A4]; 1653 framep->tf_regs[FRAME_A5] = regp->r_regs[R_A5]; 1654 framep->tf_regs[FRAME_T8] = regp->r_regs[R_T8]; 1655 framep->tf_regs[FRAME_T9] = regp->r_regs[R_T9]; 1656 framep->tf_regs[FRAME_T10] = regp->r_regs[R_T10]; 1657 framep->tf_regs[FRAME_T11] = regp->r_regs[R_T11]; 1658 framep->tf_regs[FRAME_RA] = regp->r_regs[R_RA]; 1659 framep->tf_regs[FRAME_T12] = regp->r_regs[R_T12]; 1660 framep->tf_regs[FRAME_AT] = regp->r_regs[R_AT]; 1661 framep->tf_regs[FRAME_GP] = regp->r_regs[R_GP]; 1662 /* framep->tf_regs[FRAME_SP] = regp->r_regs[R_SP]; XXX */ 1663 /* ??? = regp->r_regs[R_ZERO]; */ 1664 } 1665 1666 void 1667 printregs(regp) 1668 struct reg *regp; 1669 { 1670 int i; 1671 1672 for (i = 0; i < 32; i++) 1673 printf("R%d:\t0x%016lx%s", i, regp->r_regs[i], 1674 i & 1 ? "\n" : "\t"); 1675 } 1676 1677 void 1678 regdump(framep) 1679 struct trapframe *framep; 1680 { 1681 struct reg reg; 1682 1683 frametoreg(framep, ®); 1684 reg.r_regs[R_SP] = alpha_pal_rdusp(); 1685 1686 printf("REGISTERS:\n"); 1687 printregs(®); 1688 } 1689 1690 #ifdef DEBUG 1691 int sigdebug = 0; 1692 int sigpid = 0; 1693 #define SDB_FOLLOW 0x01 1694 #define SDB_KSTACK 0x02 1695 #endif 1696 1697 /* 1698 * Send an interrupt to process. 1699 */ 1700 void 1701 sendsig(catcher, sig, mask, code) 1702 sig_t catcher; 1703 int sig; 1704 sigset_t *mask; 1705 u_long code; 1706 { 1707 struct proc *p = curproc; 1708 struct sigcontext *scp, ksc; 1709 struct trapframe *frame; 1710 struct sigacts *psp = p->p_sigacts; 1711 int onstack, fsize, rndfsize; 1712 extern struct proc *fpcurproc; 1713 1714 frame = p->p_md.md_tf; 1715 1716 /* Do we need to jump onto the signal stack? */ 1717 onstack = 1718 (psp->ps_sigstk.ss_flags & (SS_DISABLE | SS_ONSTACK)) == 0 && 1719 (psp->ps_sigact[sig].sa_flags & SA_ONSTACK) != 0; 1720 1721 /* Allocate space for the signal handler context. */ 1722 fsize = sizeof(ksc); 1723 rndfsize = ((fsize + 15) / 16) * 16; 1724 1725 if (onstack) 1726 scp = (struct sigcontext *)((caddr_t)psp->ps_sigstk.ss_sp + 1727 psp->ps_sigstk.ss_size); 1728 else 1729 scp = (struct sigcontext *)(alpha_pal_rdusp()); 1730 scp = (struct sigcontext *)((caddr_t)scp - rndfsize); 1731 1732 #ifdef DEBUG 1733 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1734 printf("sendsig(%d): sig %d ssp %p usp %p\n", p->p_pid, 1735 sig, &onstack, scp); 1736 #endif 1737 1738 /* Build stack frame for signal trampoline. */ 1739 ksc.sc_pc = frame->tf_regs[FRAME_PC]; 1740 ksc.sc_ps = frame->tf_regs[FRAME_PS]; 1741 1742 /* Save register context. */ 1743 frametoreg(frame, (struct reg *)ksc.sc_regs); 1744 ksc.sc_regs[R_ZERO] = 0xACEDBADE; /* magic number */ 1745 ksc.sc_regs[R_SP] = alpha_pal_rdusp(); 1746 1747 /* save the floating-point state, if necessary, then copy it. */ 1748 if (p == fpcurproc) { 1749 alpha_pal_wrfen(1); 1750 savefpstate(&p->p_addr->u_pcb.pcb_fp); 1751 alpha_pal_wrfen(0); 1752 fpcurproc = NULL; 1753 } 1754 ksc.sc_ownedfp = p->p_md.md_flags & MDP_FPUSED; 1755 bcopy(&p->p_addr->u_pcb.pcb_fp, (struct fpreg *)ksc.sc_fpregs, 1756 sizeof(struct fpreg)); 1757 ksc.sc_fp_control = 0; /* XXX ? */ 1758 bzero(ksc.sc_reserved, sizeof ksc.sc_reserved); /* XXX */ 1759 bzero(ksc.sc_xxx, sizeof ksc.sc_xxx); /* XXX */ 1760 1761 /* Save signal stack. */ 1762 ksc.sc_onstack = psp->ps_sigstk.ss_flags & SS_ONSTACK; 1763 1764 /* Save signal mask. */ 1765 ksc.sc_mask = *mask; 1766 1767 #ifdef COMPAT_13 1768 /* 1769 * XXX We always have to save an old style signal mask because 1770 * XXX we might be delivering a signal to a process which will 1771 * XXX escape from the signal in a non-standard way and invoke 1772 * XXX sigreturn() directly. 1773 */ 1774 { 1775 /* Note: it's a long in the stack frame. */ 1776 sigset13_t mask13; 1777 1778 native_sigset_to_sigset13(mask, &mask13); 1779 ksc.__sc_mask13 = mask13; 1780 } 1781 #endif 1782 1783 #ifdef COMPAT_OSF1 1784 /* 1785 * XXX Create an OSF/1-style sigcontext and associated goo. 1786 */ 1787 #endif 1788 1789 if (copyout(&ksc, (caddr_t)scp, fsize) != 0) { 1790 /* 1791 * Process has trashed its stack; give it an illegal 1792 * instruction to halt it in its tracks. 1793 */ 1794 #ifdef DEBUG 1795 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1796 printf("sendsig(%d): copyout failed on sig %d\n", 1797 p->p_pid, sig); 1798 #endif 1799 sigexit(p, SIGILL); 1800 /* NOTREACHED */ 1801 } 1802 #ifdef DEBUG 1803 if (sigdebug & SDB_FOLLOW) 1804 printf("sendsig(%d): sig %d scp %p code %lx\n", p->p_pid, sig, 1805 scp, code); 1806 #endif 1807 1808 /* Set up the registers to return to sigcode. */ 1809 frame->tf_regs[FRAME_PC] = (u_int64_t)psp->ps_sigcode; 1810 frame->tf_regs[FRAME_A0] = sig; 1811 frame->tf_regs[FRAME_A1] = code; 1812 frame->tf_regs[FRAME_A2] = (u_int64_t)scp; 1813 frame->tf_regs[FRAME_T12] = (u_int64_t)catcher; /* t12 is pv */ 1814 alpha_pal_wrusp((unsigned long)scp); 1815 1816 /* Remember that we're now on the signal stack. */ 1817 if (onstack) 1818 psp->ps_sigstk.ss_flags |= SS_ONSTACK; 1819 1820 #ifdef DEBUG 1821 if (sigdebug & SDB_FOLLOW) 1822 printf("sendsig(%d): pc %lx, catcher %lx\n", p->p_pid, 1823 frame->tf_regs[FRAME_PC], frame->tf_regs[FRAME_A3]); 1824 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1825 printf("sendsig(%d): sig %d returns\n", 1826 p->p_pid, sig); 1827 #endif 1828 } 1829 1830 /* 1831 * System call to cleanup state after a signal 1832 * has been taken. Reset signal mask and 1833 * stack state from context left by sendsig (above). 1834 * Return to previous pc and psl as specified by 1835 * context left by sendsig. Check carefully to 1836 * make sure that the user has not modified the 1837 * psl to gain improper priviledges or to cause 1838 * a machine fault. 1839 */ 1840 /* ARGSUSED */ 1841 int 1842 sys___sigreturn14(p, v, retval) 1843 struct proc *p; 1844 void *v; 1845 register_t *retval; 1846 { 1847 struct sys___sigreturn14_args /* { 1848 syscallarg(struct sigcontext *) sigcntxp; 1849 } */ *uap = v; 1850 struct sigcontext *scp, ksc; 1851 extern struct proc *fpcurproc; 1852 1853 /* 1854 * The trampoline code hands us the context. 1855 * It is unsafe to keep track of it ourselves, in the event that a 1856 * program jumps out of a signal handler. 1857 */ 1858 scp = SCARG(uap, sigcntxp); 1859 #ifdef DEBUG 1860 if (sigdebug & SDB_FOLLOW) 1861 printf("sigreturn: pid %d, scp %p\n", p->p_pid, scp); 1862 #endif 1863 if (ALIGN(scp) != (u_int64_t)scp) 1864 return (EINVAL); 1865 1866 if (copyin((caddr_t)scp, &ksc, sizeof(ksc)) != 0) 1867 return (EFAULT); 1868 1869 if (ksc.sc_regs[R_ZERO] != 0xACEDBADE) /* magic number */ 1870 return (EINVAL); 1871 1872 /* Restore register context. */ 1873 p->p_md.md_tf->tf_regs[FRAME_PC] = ksc.sc_pc; 1874 p->p_md.md_tf->tf_regs[FRAME_PS] = 1875 (ksc.sc_ps | ALPHA_PSL_USERSET) & ~ALPHA_PSL_USERCLR; 1876 1877 regtoframe((struct reg *)ksc.sc_regs, p->p_md.md_tf); 1878 alpha_pal_wrusp(ksc.sc_regs[R_SP]); 1879 1880 /* XXX ksc.sc_ownedfp ? */ 1881 if (p == fpcurproc) 1882 fpcurproc = NULL; 1883 bcopy((struct fpreg *)ksc.sc_fpregs, &p->p_addr->u_pcb.pcb_fp, 1884 sizeof(struct fpreg)); 1885 /* XXX ksc.sc_fp_control ? */ 1886 1887 /* Restore signal stack. */ 1888 if (ksc.sc_onstack & SS_ONSTACK) 1889 p->p_sigacts->ps_sigstk.ss_flags |= SS_ONSTACK; 1890 else 1891 p->p_sigacts->ps_sigstk.ss_flags &= ~SS_ONSTACK; 1892 1893 /* Restore signal mask. */ 1894 (void) sigprocmask1(p, SIG_SETMASK, &ksc.sc_mask, 0); 1895 1896 #ifdef DEBUG 1897 if (sigdebug & SDB_FOLLOW) 1898 printf("sigreturn(%d): returns\n", p->p_pid); 1899 #endif 1900 return (EJUSTRETURN); 1901 } 1902 1903 /* 1904 * machine dependent system variables. 1905 */ 1906 int 1907 cpu_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 1908 int *name; 1909 u_int namelen; 1910 void *oldp; 1911 size_t *oldlenp; 1912 void *newp; 1913 size_t newlen; 1914 struct proc *p; 1915 { 1916 dev_t consdev; 1917 1918 /* all sysctl names at this level are terminal */ 1919 if (namelen != 1) 1920 return (ENOTDIR); /* overloaded */ 1921 1922 switch (name[0]) { 1923 case CPU_CONSDEV: 1924 if (cn_tab != NULL) 1925 consdev = cn_tab->cn_dev; 1926 else 1927 consdev = NODEV; 1928 return (sysctl_rdstruct(oldp, oldlenp, newp, &consdev, 1929 sizeof consdev)); 1930 1931 case CPU_ROOT_DEVICE: 1932 return (sysctl_rdstring(oldp, oldlenp, newp, 1933 root_device->dv_xname)); 1934 1935 case CPU_UNALIGNED_PRINT: 1936 return (sysctl_int(oldp, oldlenp, newp, newlen, 1937 &alpha_unaligned_print)); 1938 1939 case CPU_UNALIGNED_FIX: 1940 return (sysctl_int(oldp, oldlenp, newp, newlen, 1941 &alpha_unaligned_fix)); 1942 1943 case CPU_UNALIGNED_SIGBUS: 1944 return (sysctl_int(oldp, oldlenp, newp, newlen, 1945 &alpha_unaligned_sigbus)); 1946 1947 case CPU_BOOTED_KERNEL: 1948 return (sysctl_rdstring(oldp, oldlenp, newp, 1949 bootinfo.booted_kernel)); 1950 1951 default: 1952 return (EOPNOTSUPP); 1953 } 1954 /* NOTREACHED */ 1955 } 1956 1957 /* 1958 * Set registers on exec. 1959 */ 1960 void 1961 setregs(p, pack, stack) 1962 register struct proc *p; 1963 struct exec_package *pack; 1964 u_long stack; 1965 { 1966 struct trapframe *tfp = p->p_md.md_tf; 1967 extern struct proc *fpcurproc; 1968 #ifdef DEBUG 1969 int i; 1970 #endif 1971 1972 #ifdef DEBUG 1973 /* 1974 * Crash and dump, if the user requested it. 1975 */ 1976 if (boothowto & RB_DUMP) 1977 panic("crash requested by boot flags"); 1978 #endif 1979 1980 #ifdef DEBUG 1981 for (i = 0; i < FRAME_SIZE; i++) 1982 tfp->tf_regs[i] = 0xbabefacedeadbeef; 1983 #else 1984 bzero(tfp->tf_regs, FRAME_SIZE * sizeof tfp->tf_regs[0]); 1985 #endif 1986 bzero(&p->p_addr->u_pcb.pcb_fp, sizeof p->p_addr->u_pcb.pcb_fp); 1987 #define FP_RN 2 /* XXX */ 1988 p->p_addr->u_pcb.pcb_fp.fpr_cr = (long)FP_RN << 58; 1989 alpha_pal_wrusp(stack); 1990 tfp->tf_regs[FRAME_PS] = ALPHA_PSL_USERSET; 1991 tfp->tf_regs[FRAME_PC] = pack->ep_entry & ~3; 1992 1993 tfp->tf_regs[FRAME_A0] = stack; /* a0 = sp */ 1994 tfp->tf_regs[FRAME_A1] = 0; /* a1 = rtld cleanup */ 1995 tfp->tf_regs[FRAME_A2] = 0; /* a2 = rtld object */ 1996 tfp->tf_regs[FRAME_A3] = (u_int64_t)PS_STRINGS; /* a3 = ps_strings */ 1997 tfp->tf_regs[FRAME_T12] = tfp->tf_regs[FRAME_PC]; /* a.k.a. PV */ 1998 1999 p->p_md.md_flags &= ~MDP_FPUSED; 2000 if (fpcurproc == p) 2001 fpcurproc = NULL; 2002 } 2003 2004 void 2005 netintr() 2006 { 2007 int n, s; 2008 2009 s = splhigh(); 2010 n = netisr; 2011 netisr = 0; 2012 splx(s); 2013 2014 #define DONETISR(bit, fn) \ 2015 do { \ 2016 if (n & (1 << (bit))) \ 2017 fn; \ 2018 } while (0) 2019 2020 #ifdef INET 2021 #if NARP > 0 2022 DONETISR(NETISR_ARP, arpintr()); 2023 #endif 2024 DONETISR(NETISR_IP, ipintr()); 2025 #endif 2026 #ifdef NETATALK 2027 DONETISR(NETISR_ATALK, atintr()); 2028 #endif 2029 #ifdef NS 2030 DONETISR(NETISR_NS, nsintr()); 2031 #endif 2032 #ifdef ISO 2033 DONETISR(NETISR_ISO, clnlintr()); 2034 #endif 2035 #ifdef CCITT 2036 DONETISR(NETISR_CCITT, ccittintr()); 2037 #endif 2038 #ifdef NATM 2039 DONETISR(NETISR_NATM, natmintr()); 2040 #endif 2041 #if NPPP > 1 2042 DONETISR(NETISR_PPP, pppintr()); 2043 #endif 2044 2045 #undef DONETISR 2046 } 2047 2048 void 2049 do_sir() 2050 { 2051 u_int64_t n; 2052 2053 do { 2054 (void)splhigh(); 2055 n = ssir; 2056 ssir = 0; 2057 splsoft(); /* don't recurse through spl0() */ 2058 2059 #if defined(UVM) 2060 #define COUNT_SOFT uvmexp.softs++ 2061 #else 2062 #define COUNT_SOFT cnt.v_soft++ 2063 #endif 2064 2065 #define DO_SIR(bit, fn) \ 2066 do { \ 2067 if (n & (bit)) { \ 2068 COUNT_SOFT; \ 2069 fn; \ 2070 } \ 2071 } while (0) 2072 2073 DO_SIR(SIR_NET, netintr()); 2074 DO_SIR(SIR_CLOCK, softclock()); 2075 #if NCOM > 0 2076 DO_SIR(SIR_SERIAL, comsoft()); 2077 #endif 2078 2079 #undef COUNT_SOFT 2080 #undef DO_SIR 2081 } while (ssir != 0); 2082 } 2083 2084 int 2085 spl0() 2086 { 2087 2088 if (ssir) 2089 do_sir(); /* it lowers the IPL itself */ 2090 2091 return (alpha_pal_swpipl(ALPHA_PSL_IPL_0)); 2092 } 2093 2094 /* 2095 * The following primitives manipulate the run queues. _whichqs tells which 2096 * of the 32 queues _qs have processes in them. Setrunqueue puts processes 2097 * into queues, Remrunqueue removes them from queues. The running process is 2098 * on no queue, other processes are on a queue related to p->p_priority, 2099 * divided by 4 actually to shrink the 0-127 range of priorities into the 32 2100 * available queues. 2101 */ 2102 /* 2103 * setrunqueue(p) 2104 * proc *p; 2105 * 2106 * Call should be made at splclock(), and p->p_stat should be SRUN. 2107 */ 2108 2109 void 2110 setrunqueue(p) 2111 struct proc *p; 2112 { 2113 int bit; 2114 2115 /* firewall: p->p_back must be NULL */ 2116 if (p->p_back != NULL) 2117 panic("setrunqueue"); 2118 2119 bit = p->p_priority >> 2; 2120 whichqs |= (1 << bit); 2121 p->p_forw = (struct proc *)&qs[bit]; 2122 p->p_back = qs[bit].ph_rlink; 2123 p->p_back->p_forw = p; 2124 qs[bit].ph_rlink = p; 2125 } 2126 2127 /* 2128 * remrunqueue(p) 2129 * 2130 * Call should be made at splclock(). 2131 */ 2132 void 2133 remrunqueue(p) 2134 struct proc *p; 2135 { 2136 int bit; 2137 2138 bit = p->p_priority >> 2; 2139 if ((whichqs & (1 << bit)) == 0) 2140 panic("remrunqueue"); 2141 2142 p->p_back->p_forw = p->p_forw; 2143 p->p_forw->p_back = p->p_back; 2144 p->p_back = NULL; /* for firewall checking. */ 2145 2146 if ((struct proc *)&qs[bit] == qs[bit].ph_link) 2147 whichqs &= ~(1 << bit); 2148 } 2149 2150 /* 2151 * Return the best possible estimate of the time in the timeval 2152 * to which tvp points. Unfortunately, we can't read the hardware registers. 2153 * We guarantee that the time will be greater than the value obtained by a 2154 * previous call. 2155 */ 2156 void 2157 microtime(tvp) 2158 register struct timeval *tvp; 2159 { 2160 int s = splclock(); 2161 static struct timeval lasttime; 2162 2163 *tvp = time; 2164 #ifdef notdef 2165 tvp->tv_usec += clkread(); 2166 while (tvp->tv_usec > 1000000) { 2167 tvp->tv_sec++; 2168 tvp->tv_usec -= 1000000; 2169 } 2170 #endif 2171 if (tvp->tv_sec == lasttime.tv_sec && 2172 tvp->tv_usec <= lasttime.tv_usec && 2173 (tvp->tv_usec = lasttime.tv_usec + 1) > 1000000) { 2174 tvp->tv_sec++; 2175 tvp->tv_usec -= 1000000; 2176 } 2177 lasttime = *tvp; 2178 splx(s); 2179 } 2180 2181 /* 2182 * Wait "n" microseconds. 2183 */ 2184 void 2185 delay(n) 2186 unsigned long n; 2187 { 2188 long N = cycles_per_usec * (n); 2189 2190 while (N > 0) /* XXX */ 2191 N -= 3; /* XXX */ 2192 } 2193 2194 #if defined(COMPAT_OSF1) || 1 /* XXX */ 2195 void cpu_exec_ecoff_setregs __P((struct proc *, struct exec_package *, 2196 u_long)); 2197 2198 void 2199 cpu_exec_ecoff_setregs(p, epp, stack) 2200 struct proc *p; 2201 struct exec_package *epp; 2202 u_long stack; 2203 { 2204 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2205 2206 setregs(p, epp, stack); 2207 p->p_md.md_tf->tf_regs[FRAME_GP] = execp->a.gp_value; 2208 } 2209 2210 /* 2211 * cpu_exec_ecoff_hook(): 2212 * cpu-dependent ECOFF format hook for execve(). 2213 * 2214 * Do any machine-dependent diddling of the exec package when doing ECOFF. 2215 * 2216 */ 2217 int 2218 cpu_exec_ecoff_hook(p, epp) 2219 struct proc *p; 2220 struct exec_package *epp; 2221 { 2222 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2223 extern struct emul emul_netbsd; 2224 #ifdef COMPAT_OSF1 2225 extern struct emul emul_osf1; 2226 #endif 2227 2228 switch (execp->f.f_magic) { 2229 #ifdef COMPAT_OSF1 2230 case ECOFF_MAGIC_ALPHA: 2231 epp->ep_emul = &emul_osf1; 2232 break; 2233 #endif 2234 2235 case ECOFF_MAGIC_NETBSD_ALPHA: 2236 epp->ep_emul = &emul_netbsd; 2237 break; 2238 2239 default: 2240 return ENOEXEC; 2241 } 2242 return 0; 2243 } 2244 #endif 2245 2246 int 2247 alpha_pa_access(pa) 2248 u_long pa; 2249 { 2250 int i; 2251 2252 for (i = 0; i < mem_cluster_cnt; i++) { 2253 if (pa < mem_clusters[i].start) 2254 continue; 2255 if ((pa - mem_clusters[i].start) >= 2256 (mem_clusters[i].size & ~PAGE_MASK)) 2257 continue; 2258 return (mem_clusters[i].size & PAGE_MASK); /* prot */ 2259 } 2260 return (PROT_NONE); 2261 } 2262 2263 /* XXX XXX BEGIN XXX XXX */ 2264 paddr_t alpha_XXX_dmamap_or; /* XXX */ 2265 /* XXX */ 2266 paddr_t /* XXX */ 2267 alpha_XXX_dmamap(v) /* XXX */ 2268 vaddr_t v; /* XXX */ 2269 { /* XXX */ 2270 /* XXX */ 2271 return (vtophys(v) | alpha_XXX_dmamap_or); /* XXX */ 2272 } /* XXX */ 2273 /* XXX XXX END XXX XXX */ 2274 2275 struct mchkinfo * 2276 cpu_mchkinfo() 2277 { 2278 if (mchkinfo_all_cpus == NULL) 2279 return &startup_info; 2280 return mchkinfo_all_cpus + alpha_pal_whami(); 2281 } 2282
Indexes created Fri Oct 03 02:09:57 GMT 2025