machdep.c revision 1.153
1 /* $NetBSD: machdep.c,v 1.153 1998/10/19 22:09:13 tron Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center and by Chris G. Demetriou. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /* 41 * Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University. 42 * All rights reserved. 43 * 44 * Author: Chris G. Demetriou 45 * 46 * Permission to use, copy, modify and distribute this software and 47 * its documentation is hereby granted, provided that both the copyright 48 * notice and this permission notice appear in all copies of the 49 * software, derivative works or modified versions, and any portions 50 * thereof, and that both notices appear in supporting documentation. 51 * 52 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 53 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 54 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 55 * 56 * Carnegie Mellon requests users of this software to return to 57 * 58 * Software Distribution Coordinator or Software.Distribution (at) CS.CMU.EDU 59 * School of Computer Science 60 * Carnegie Mellon University 61 * Pittsburgh PA 15213-3890 62 * 63 * any improvements or extensions that they make and grant Carnegie the 64 * rights to redistribute these changes. 65 */ 66 67 #include "opt_ddb.h" 68 #include "opt_multiprocessor.h" 69 #include "opt_uvm.h" 70 #include "opt_pmap_new.h" 71 #include "opt_dec_3000_300.h" 72 #include "opt_dec_3000_500.h" 73 #include "opt_compat_osf1.h" 74 #include "opt_compat_netbsd.h" 75 #include "opt_inet.h" 76 #include "opt_atalk.h" 77 #include "opt_ccitt.h" 78 #include "opt_iso.h" 79 #include "opt_ns.h" 80 #include "opt_natm.h" 81 #include "opt_sysv.h" 82 83 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 84 85 __KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.153 1998/10/19 22:09:13 tron Exp $"); 86 87 #include <sys/param.h> 88 #include <sys/systm.h> 89 #include <sys/signalvar.h> 90 #include <sys/kernel.h> 91 #include <sys/map.h> 92 #include <sys/proc.h> 93 #include <sys/buf.h> 94 #include <sys/reboot.h> 95 #include <sys/device.h> 96 #include <sys/file.h> 97 #ifdef REAL_CLISTS 98 #include <sys/clist.h> 99 #endif 100 #include <sys/callout.h> 101 #include <sys/malloc.h> 102 #include <sys/mbuf.h> 103 #include <sys/mman.h> 104 #include <sys/msgbuf.h> 105 #include <sys/ioctl.h> 106 #include <sys/tty.h> 107 #include <sys/user.h> 108 #include <sys/exec.h> 109 #include <sys/exec_ecoff.h> 110 #include <vm/vm.h> 111 #include <sys/sysctl.h> 112 #include <sys/core.h> 113 #include <sys/kcore.h> 114 #include <machine/kcore.h> 115 #ifdef SYSVMSG 116 #include <sys/msg.h> 117 #endif 118 #ifdef SYSVSEM 119 #include <sys/sem.h> 120 #endif 121 #ifdef SYSVSHM 122 #include <sys/shm.h> 123 #endif 124 125 #include <sys/mount.h> 126 #include <sys/syscallargs.h> 127 128 #include <vm/vm_kern.h> 129 130 #if defined(UVM) 131 #include <uvm/uvm_extern.h> 132 #endif 133 134 #include <dev/cons.h> 135 136 #include <machine/autoconf.h> 137 #include <machine/cpu.h> 138 #include <machine/reg.h> 139 #include <machine/rpb.h> 140 #include <machine/prom.h> 141 #include <machine/conf.h> 142 143 #include <alpha/alpha/cpuvar.h> 144 145 #include <net/netisr.h> 146 #include <net/if.h> 147 148 #ifdef INET 149 #include <net/route.h> 150 #include <netinet/in.h> 151 #include <netinet/ip_var.h> 152 #include "arp.h" 153 #if NARP > 0 154 #include <netinet/if_inarp.h> 155 #endif 156 #endif 157 #ifdef NS 158 #include <netns/ns_var.h> 159 #endif 160 #ifdef ISO 161 #include <netiso/iso.h> 162 #include <netiso/clnp.h> 163 #endif 164 #ifdef CCITT 165 #include <netccitt/x25.h> 166 #include <netccitt/pk.h> 167 #include <netccitt/pk_extern.h> 168 #endif 169 #ifdef NATM 170 #include <netnatm/natm.h> 171 #endif 172 #ifdef NETATALK 173 #include <netatalk/at_extern.h> 174 #endif 175 #include "ppp.h" 176 #if NPPP > 0 177 #include <net/ppp_defs.h> 178 #include <net/if_ppp.h> 179 #endif 180 181 #ifdef DDB 182 #include <machine/db_machdep.h> 183 #include <ddb/db_access.h> 184 #include <ddb/db_sym.h> 185 #include <ddb/db_extern.h> 186 #include <ddb/db_interface.h> 187 #endif 188 189 #include "com.h" 190 #if NCOM > 0 191 extern void comsoft __P((void)); 192 #endif 193 194 #if defined(UVM) 195 vm_map_t exec_map = NULL; 196 vm_map_t mb_map = NULL; 197 vm_map_t phys_map = NULL; 198 #else 199 vm_map_t buffer_map; 200 #endif 201 202 /* 203 * Declare these as initialized data so we can patch them. 204 */ 205 int nswbuf = 0; 206 #ifdef NBUF 207 int nbuf = NBUF; 208 #else 209 int nbuf = 0; 210 #endif 211 #ifdef BUFPAGES 212 int bufpages = BUFPAGES; 213 #else 214 int bufpages = 0; 215 #endif 216 caddr_t msgbufaddr; 217 218 int maxmem; /* max memory per process */ 219 220 int totalphysmem; /* total amount of physical memory in system */ 221 int physmem; /* physical memory used by NetBSD + some rsvd */ 222 int resvmem; /* amount of memory reserved for PROM */ 223 int unusedmem; /* amount of memory for OS that we don't use */ 224 int unknownmem; /* amount of memory with an unknown use */ 225 226 int cputype; /* system type, from the RPB */ 227 228 /* 229 * XXX We need an address to which we can assign things so that they 230 * won't be optimized away because we didn't use the value. 231 */ 232 u_int32_t no_optimize; 233 234 /* the following is used externally (sysctl_hw) */ 235 char machine[] = MACHINE; /* from <machine/param.h> */ 236 char machine_arch[] = MACHINE_ARCH; /* from <machine/param.h> */ 237 char cpu_model[128]; 238 239 struct user *proc0paddr; 240 241 /* Number of machine cycles per microsecond */ 242 u_int64_t cycles_per_usec; 243 244 /* number of cpus in the box. really! */ 245 int ncpus; 246 247 /* machine check info array, valloc()'ed in allocsys() */ 248 249 static struct mchkinfo startup_info, 250 *mchkinfo_all_cpus; 251 252 struct bootinfo_kernel bootinfo; 253 254 /* For built-in TCDS */ 255 #if defined(DEC_3000_300) || defined(DEC_3000_500) 256 u_int8_t dec_3000_scsiid[2], dec_3000_scsifast[2]; 257 #endif 258 259 struct platform platform; 260 261 u_int32_t vm_mbuf_size = _VM_MBUF_SIZE; 262 u_int32_t vm_kmem_size = _VM_KMEM_SIZE; 263 u_int32_t vm_phys_size = _VM_PHYS_SIZE; 264 265 #ifdef DDB 266 /* start and end of kernel symbol table */ 267 void *ksym_start, *ksym_end; 268 #endif 269 270 /* for cpu_sysctl() */ 271 int alpha_unaligned_print = 1; /* warn about unaligned accesses */ 272 int alpha_unaligned_fix = 1; /* fix up unaligned accesses */ 273 int alpha_unaligned_sigbus = 0; /* don't SIGBUS on fixed-up accesses */ 274 275 /* 276 * XXX This should be dynamically sized, but we have the chicken-egg problem! 277 * XXX it should also be larger than it is, because not all of the mddt 278 * XXX clusters end up being used for VM. 279 */ 280 phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX]; /* low size bits overloaded */ 281 int mem_cluster_cnt; 282 283 caddr_t allocsys __P((caddr_t)); 284 int cpu_dump __P((void)); 285 int cpu_dumpsize __P((void)); 286 u_long cpu_dump_mempagecnt __P((void)); 287 void dumpsys __P((void)); 288 void identifycpu __P((void)); 289 void netintr __P((void)); 290 void printregs __P((struct reg *)); 291 292 void 293 alpha_init(pfn, ptb, bim, bip, biv) 294 u_long pfn; /* first free PFN number */ 295 u_long ptb; /* PFN of current level 1 page table */ 296 u_long bim; /* bootinfo magic */ 297 u_long bip; /* bootinfo pointer */ 298 u_long biv; /* bootinfo version */ 299 { 300 extern char kernel_text[], _end[]; 301 struct mddt *mddtp; 302 struct mddt_cluster *memc; 303 int i, mddtweird; 304 struct vm_physseg *vps; 305 vaddr_t kernstart, kernend; 306 paddr_t kernstartpfn, kernendpfn, pfn0, pfn1; 307 vsize_t size; 308 char *p; 309 caddr_t v; 310 char *bootinfo_msg; 311 312 /* NO OUTPUT ALLOWED UNTIL FURTHER NOTICE */ 313 314 /* 315 * Turn off interrupts (not mchecks) and floating point. 316 * Make sure the instruction and data streams are consistent. 317 */ 318 (void)alpha_pal_swpipl(ALPHA_PSL_IPL_HIGH); 319 alpha_pal_wrfen(0); 320 ALPHA_TBIA(); 321 alpha_pal_imb(); 322 323 /* 324 * Get critical system information (if possible, from the 325 * information provided by the boot program). 326 */ 327 bootinfo_msg = NULL; 328 if (bim == BOOTINFO_MAGIC) { 329 if (biv == 0) { /* backward compat */ 330 biv = *(u_long *)bip; 331 bip += 8; 332 } 333 switch (biv) { 334 case 1: { 335 struct bootinfo_v1 *v1p = (struct bootinfo_v1 *)bip; 336 337 bootinfo.ssym = v1p->ssym; 338 bootinfo.esym = v1p->esym; 339 /* hwrpb may not be provided by boot block in v1 */ 340 if (v1p->hwrpb != NULL) { 341 bootinfo.hwrpb_phys = 342 ((struct rpb *)v1p->hwrpb)->rpb_phys; 343 bootinfo.hwrpb_size = v1p->hwrpbsize; 344 } else { 345 bootinfo.hwrpb_phys = 346 ((struct rpb *)HWRPB_ADDR)->rpb_phys; 347 bootinfo.hwrpb_size = 348 ((struct rpb *)HWRPB_ADDR)->rpb_size; 349 } 350 bcopy(v1p->boot_flags, bootinfo.boot_flags, 351 min(sizeof v1p->boot_flags, 352 sizeof bootinfo.boot_flags)); 353 bcopy(v1p->booted_kernel, bootinfo.booted_kernel, 354 min(sizeof v1p->booted_kernel, 355 sizeof bootinfo.booted_kernel)); 356 /* booted dev not provided in bootinfo */ 357 init_prom_interface((struct rpb *) 358 ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys)); 359 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 360 sizeof bootinfo.booted_dev); 361 break; 362 } 363 default: 364 bootinfo_msg = "unknown bootinfo version"; 365 goto nobootinfo; 366 } 367 } else { 368 bootinfo_msg = "boot program did not pass bootinfo"; 369 nobootinfo: 370 bootinfo.ssym = (u_long)_end; 371 bootinfo.esym = (u_long)_end; 372 bootinfo.hwrpb_phys = ((struct rpb *)HWRPB_ADDR)->rpb_phys; 373 bootinfo.hwrpb_size = ((struct rpb *)HWRPB_ADDR)->rpb_size; 374 init_prom_interface((struct rpb *)HWRPB_ADDR); 375 prom_getenv(PROM_E_BOOTED_OSFLAGS, bootinfo.boot_flags, 376 sizeof bootinfo.boot_flags); 377 prom_getenv(PROM_E_BOOTED_FILE, bootinfo.booted_kernel, 378 sizeof bootinfo.booted_kernel); 379 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 380 sizeof bootinfo.booted_dev); 381 } 382 383 /* 384 * Initialize the kernel's mapping of the RPB. It's needed for 385 * lots of things. 386 */ 387 hwrpb = (struct rpb *)ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys); 388 389 #if defined(DEC_3000_300) || defined(DEC_3000_500) 390 if (hwrpb->rpb_type == ST_DEC_3000_300 || 391 hwrpb->rpb_type == ST_DEC_3000_500) { 392 prom_getenv(PROM_E_SCSIID, dec_3000_scsiid, 393 sizeof(dec_3000_scsiid)); 394 prom_getenv(PROM_E_SCSIFAST, dec_3000_scsifast, 395 sizeof(dec_3000_scsifast)); 396 } 397 #endif 398 399 /* 400 * Remember how many cycles there are per microsecond, 401 * so that we can use delay(). Round up, for safety. 402 */ 403 cycles_per_usec = (hwrpb->rpb_cc_freq + 999999) / 1000000; 404 405 /* 406 * Initalize the (temporary) bootstrap console interface, so 407 * we can use printf until the VM system starts being setup. 408 * The real console is initialized before then. 409 */ 410 init_bootstrap_console(); 411 412 /* OUTPUT NOW ALLOWED */ 413 414 /* delayed from above */ 415 if (bootinfo_msg) 416 printf("WARNING: %s (0x%lx, 0x%lx, 0x%lx)\n", 417 bootinfo_msg, bim, bip, biv); 418 419 /* Initialize the trap vectors on the primary processor. */ 420 trap_init(); 421 422 /* 423 * Find out what hardware we're on, and do basic initialization. 424 */ 425 cputype = hwrpb->rpb_type; 426 if (cputype >= ncpuinit) { 427 platform_not_supported(); 428 /* NOTREACHED */ 429 } 430 (*cpuinit[cputype].init)(); 431 strcpy(cpu_model, platform.model); 432 433 /* 434 * Initalize the real console, so the the bootstrap console is 435 * no longer necessary. 436 */ 437 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 438 if (!pmap_uses_prom_console()) 439 #endif 440 (*platform.cons_init)(); 441 442 #ifdef DIAGNOSTIC 443 /* Paranoid sanity checking */ 444 445 /* We should always be running on the the primary. */ 446 assert(hwrpb->rpb_primary_cpu_id == alpha_pal_whami()); 447 448 /* 449 * On single-CPU systypes, the primary should always be CPU 0, 450 * except on Alpha 8200 systems where the CPU id is related 451 * to the VID, which is related to the Turbo Laser node id. 452 */ 453 if (cputype != ST_DEC_21000) 454 assert(hwrpb->rpb_primary_cpu_id == 0); 455 #endif 456 457 /* NO MORE FIRMWARE ACCESS ALLOWED */ 458 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 459 /* 460 * XXX (unless _PMAP_MAY_USE_PROM_CONSOLE is defined and 461 * XXX pmap_uses_prom_console() evaluates to non-zero.) 462 */ 463 #endif 464 465 /* 466 * find out this system's page size 467 */ 468 PAGE_SIZE = hwrpb->rpb_page_size; 469 if (PAGE_SIZE != 8192) 470 panic("page size %d != 8192?!", PAGE_SIZE); 471 472 /* 473 * Initialize PAGE_SIZE-dependent variables. 474 */ 475 #if defined(UVM) 476 uvm_setpagesize(); 477 #else 478 vm_set_page_size(); 479 #endif 480 481 /* 482 * Find the beginning and end of the kernel (and leave a 483 * bit of space before the beginning for the bootstrap 484 * stack). 485 */ 486 kernstart = trunc_page(kernel_text) - 2 * PAGE_SIZE; 487 #ifdef DDB 488 ksym_start = (void *)bootinfo.ssym; 489 ksym_end = (void *)bootinfo.esym; 490 kernend = (vaddr_t)round_page(ksym_end); 491 #else 492 kernend = (vaddr_t)round_page(_end); 493 #endif 494 495 kernstartpfn = atop(ALPHA_K0SEG_TO_PHYS(kernstart)); 496 kernendpfn = atop(ALPHA_K0SEG_TO_PHYS(kernend)); 497 498 /* 499 * Find out how much memory is available, by looking at 500 * the memory cluster descriptors. This also tries to do 501 * its best to detect things things that have never been seen 502 * before... 503 */ 504 mddtp = (struct mddt *)(((caddr_t)hwrpb) + hwrpb->rpb_memdat_off); 505 506 /* MDDT SANITY CHECKING */ 507 mddtweird = 0; 508 if (mddtp->mddt_cluster_cnt < 2) { 509 mddtweird = 1; 510 printf("WARNING: weird number of mem clusters: %d\n", 511 mddtp->mddt_cluster_cnt); 512 } 513 514 #if 0 515 printf("Memory cluster count: %d\n", mddtp->mddt_cluster_cnt); 516 #endif 517 518 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 519 memc = &mddtp->mddt_clusters[i]; 520 #if 0 521 printf("MEMC %d: pfn 0x%lx cnt 0x%lx usage 0x%lx\n", i, 522 memc->mddt_pfn, memc->mddt_pg_cnt, memc->mddt_usage); 523 #endif 524 totalphysmem += memc->mddt_pg_cnt; 525 if (mem_cluster_cnt < VM_PHYSSEG_MAX) { /* XXX */ 526 mem_clusters[mem_cluster_cnt].start = 527 ptoa(memc->mddt_pfn); 528 mem_clusters[mem_cluster_cnt].size = 529 ptoa(memc->mddt_pg_cnt); 530 if (memc->mddt_usage & MDDT_mbz || 531 memc->mddt_usage & MDDT_NONVOLATILE || /* XXX */ 532 memc->mddt_usage & MDDT_PALCODE) 533 mem_clusters[mem_cluster_cnt].size |= 534 PROT_READ; 535 else 536 mem_clusters[mem_cluster_cnt].size |= 537 PROT_READ | PROT_WRITE | PROT_EXEC; 538 mem_cluster_cnt++; 539 } 540 541 if (memc->mddt_usage & MDDT_mbz) { 542 mddtweird = 1; 543 printf("WARNING: mem cluster %d has weird " 544 "usage 0x%lx\n", i, memc->mddt_usage); 545 unknownmem += memc->mddt_pg_cnt; 546 continue; 547 } 548 if (memc->mddt_usage & MDDT_NONVOLATILE) { 549 /* XXX should handle these... */ 550 printf("WARNING: skipping non-volatile mem " 551 "cluster %d\n", i); 552 unusedmem += memc->mddt_pg_cnt; 553 continue; 554 } 555 if (memc->mddt_usage & MDDT_PALCODE) { 556 resvmem += memc->mddt_pg_cnt; 557 continue; 558 } 559 560 /* 561 * We have a memory cluster available for system 562 * software use. We must determine if this cluster 563 * holds the kernel. 564 */ 565 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 566 /* 567 * XXX If the kernel uses the PROM console, we only use the 568 * XXX memory after the kernel in the first system segment, 569 * XXX to avoid clobbering prom mapping, data, etc. 570 */ 571 if (!pmap_uses_prom_console() || physmem == 0) { 572 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 573 physmem += memc->mddt_pg_cnt; 574 pfn0 = memc->mddt_pfn; 575 pfn1 = memc->mddt_pfn + memc->mddt_pg_cnt; 576 if (pfn0 <= kernstartpfn && kernendpfn <= pfn1) { 577 /* 578 * Must compute the location of the kernel 579 * within the segment. 580 */ 581 #if 0 582 printf("Cluster %d contains kernel\n", i); 583 #endif 584 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 585 if (!pmap_uses_prom_console()) { 586 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 587 if (pfn0 < kernstartpfn) { 588 /* 589 * There is a chunk before the kernel. 590 */ 591 #if 0 592 printf("Loading chunk before kernel: " 593 "0x%lx / 0x%lx\n", pfn0, kernstartpfn); 594 #endif 595 #if defined(UVM) 596 uvm_page_physload(pfn0, kernstartpfn, 597 pfn0, kernstartpfn, VM_FREELIST_DEFAULT); 598 #else 599 vm_page_physload(pfn0, kernstartpfn, 600 pfn0, kernstartpfn); 601 #endif 602 } 603 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 604 } 605 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 606 if (kernendpfn < pfn1) { 607 /* 608 * There is a chunk after the kernel. 609 */ 610 #if 0 611 printf("Loading chunk after kernel: " 612 "0x%lx / 0x%lx\n", kernendpfn, pfn1); 613 #endif 614 #if defined(UVM) 615 uvm_page_physload(kernendpfn, pfn1, 616 kernendpfn, pfn1, VM_FREELIST_DEFAULT); 617 #else 618 vm_page_physload(kernendpfn, pfn1, 619 kernendpfn, pfn1); 620 #endif 621 } 622 } else { 623 /* 624 * Just load this cluster as one chunk. 625 */ 626 #if 0 627 printf("Loading cluster %d: 0x%lx / 0x%lx\n", i, 628 pfn0, pfn1); 629 #endif 630 #if defined(UVM) 631 uvm_page_physload(pfn0, pfn1, pfn0, pfn1, 632 VM_FREELIST_DEFAULT); 633 #else 634 vm_page_physload(pfn0, pfn1, pfn0, pfn1); 635 #endif 636 } 637 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 638 } 639 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 640 } 641 642 /* 643 * Dump out the MDDT if it looks odd... 644 */ 645 if (mddtweird) { 646 printf("\n"); 647 printf("complete memory cluster information:\n"); 648 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 649 printf("mddt %d:\n", i); 650 printf("\tpfn %lx\n", 651 mddtp->mddt_clusters[i].mddt_pfn); 652 printf("\tcnt %lx\n", 653 mddtp->mddt_clusters[i].mddt_pg_cnt); 654 printf("\ttest %lx\n", 655 mddtp->mddt_clusters[i].mddt_pg_test); 656 printf("\tbva %lx\n", 657 mddtp->mddt_clusters[i].mddt_v_bitaddr); 658 printf("\tbpa %lx\n", 659 mddtp->mddt_clusters[i].mddt_p_bitaddr); 660 printf("\tbcksum %lx\n", 661 mddtp->mddt_clusters[i].mddt_bit_cksum); 662 printf("\tusage %lx\n", 663 mddtp->mddt_clusters[i].mddt_usage); 664 } 665 printf("\n"); 666 } 667 668 if (totalphysmem == 0) 669 panic("can't happen: system seems to have no memory!"); 670 671 #ifdef LIMITMEM 672 /* 673 * XXX Kludge so we can run on machines with memory larger 674 * XXX than 1G until all device drivers are converted to 675 * XXX use bus_dma. (Relies on the fact that vm_physmem 676 * XXX sorted in order of increasing addresses.) 677 */ 678 if (vm_physmem[vm_nphysseg - 1].end > atop(LIMITMEM * 1024 * 1024)) { 679 680 printf("******** LIMITING MEMORY TO %dMB **********\n", 681 LIMITMEM); 682 683 do { 684 u_long ovf; 685 686 vps = &vm_physmem[vm_nphysseg - 1]; 687 688 if (vps->start >= atop(LIMITMEM * 1024 * 1024)) { 689 /* 690 * If the start is too high, just drop 691 * the whole segment. 692 * 693 * XXX can start != avail_start in this 694 * XXX case? wouldn't that mean that 695 * XXX some memory was stolen above the 696 * XXX limit? What to do? 697 */ 698 ovf = vps->end - vps->start; 699 vm_nphysseg--; 700 } else { 701 /* 702 * If the start is OK, calculate how much 703 * to drop and drop it. 704 */ 705 ovf = vps->end - atop(LIMITMEM * 1024 * 1024); 706 vps->end -= ovf; 707 vps->avail_end -= ovf; 708 } 709 physmem -= ovf; 710 unusedmem += ovf; 711 } while (vps->end > atop(LIMITMEM * 1024 * 1024)); 712 } 713 #endif /* LIMITMEM */ 714 715 maxmem = physmem; 716 717 #if 0 718 printf("totalphysmem = %d\n", totalphysmem); 719 printf("physmem = %d\n", physmem); 720 printf("resvmem = %d\n", resvmem); 721 printf("unusedmem = %d\n", unusedmem); 722 printf("unknownmem = %d\n", unknownmem); 723 #endif 724 725 /* 726 * Adjust some parameters if the amount of physmem 727 * available would cause us to croak. This is completely 728 * eyeballed and isn't meant to be the final answer. 729 * vm_phys_size is probably the only one to really worry 730 * about. 731 * 732 * It's for booting a GENERIC kernel on a large memory platform. 733 */ 734 if (physmem >= atop(128 * 1024 * 1024)) { 735 vm_mbuf_size <<= 1; 736 vm_kmem_size <<= 3; 737 vm_phys_size <<= 2; 738 } 739 740 /* 741 * Initialize error message buffer (at end of core). 742 */ 743 { 744 size_t sz = round_page(MSGBUFSIZE); 745 746 vps = &vm_physmem[vm_nphysseg - 1]; 747 748 /* shrink so that it'll fit in the last segment */ 749 if ((vps->avail_end - vps->avail_start) < atop(sz)) 750 sz = ptoa(vps->avail_end - vps->avail_start); 751 752 vps->end -= atop(sz); 753 vps->avail_end -= atop(sz); 754 msgbufaddr = (caddr_t) ALPHA_PHYS_TO_K0SEG(ptoa(vps->end)); 755 initmsgbuf(msgbufaddr, sz); 756 757 /* Remove the last segment if it now has no pages. */ 758 if (vps->start == vps->end) 759 vm_nphysseg--; 760 761 /* warn if the message buffer had to be shrunk */ 762 if (sz != round_page(MSGBUFSIZE)) 763 printf("WARNING: %d bytes not available for msgbuf in last cluster (%d used)\n", 764 round_page(MSGBUFSIZE), sz); 765 766 } 767 768 /* 769 * Init mapping for u page(s) for proc 0 770 */ 771 proc0.p_addr = proc0paddr = 772 (struct user *)pmap_steal_memory(UPAGES * PAGE_SIZE, NULL, NULL); 773 774 /* 775 * Allocate space for system data structures. These data structures 776 * are allocated here instead of cpu_startup() because physical 777 * memory is directly addressable. We don't have to map these into 778 * virtual address space. 779 */ 780 size = (vsize_t)allocsys(0); 781 v = (caddr_t)pmap_steal_memory(size, NULL, NULL); 782 if ((allocsys(v) - v) != size) 783 panic("alpha_init: table size inconsistency"); 784 785 /* 786 * Initialize the virtual memory system, and set the 787 * page table base register in proc 0's PCB. 788 */ 789 pmap_bootstrap(ALPHA_PHYS_TO_K0SEG(ptb << PGSHIFT), 790 hwrpb->rpb_max_asn, hwrpb->rpb_pcs_cnt); 791 792 /* 793 * Initialize the rest of proc 0's PCB, and cache its physical 794 * address. 795 */ 796 proc0.p_md.md_pcbpaddr = 797 (struct pcb *)ALPHA_K0SEG_TO_PHYS((vaddr_t)&proc0paddr->u_pcb); 798 799 /* 800 * Set the kernel sp, reserving space for an (empty) trapframe, 801 * and make proc0's trapframe pointer point to it for sanity. 802 */ 803 proc0paddr->u_pcb.pcb_hw.apcb_ksp = 804 (u_int64_t)proc0paddr + USPACE - sizeof(struct trapframe); 805 proc0.p_md.md_tf = 806 (struct trapframe *)proc0paddr->u_pcb.pcb_hw.apcb_ksp; 807 808 /* 809 * Look at arguments passed to us and compute boothowto. 810 */ 811 812 boothowto = RB_SINGLE; 813 #ifdef KADB 814 boothowto |= RB_KDB; 815 #endif 816 for (p = bootinfo.boot_flags; p && *p != '\0'; p++) { 817 /* 818 * Note that we'd really like to differentiate case here, 819 * but the Alpha AXP Architecture Reference Manual 820 * says that we shouldn't. 821 */ 822 switch (*p) { 823 case 'a': /* autoboot */ 824 case 'A': 825 boothowto &= ~RB_SINGLE; 826 break; 827 828 #ifdef DEBUG 829 case 'c': /* crash dump immediately after autoconfig */ 830 case 'C': 831 boothowto |= RB_DUMP; 832 break; 833 #endif 834 835 #if defined(KGDB) || defined(DDB) 836 case 'd': /* break into the kernel debugger ASAP */ 837 case 'D': 838 boothowto |= RB_KDB; 839 break; 840 #endif 841 842 case 'h': /* always halt, never reboot */ 843 case 'H': 844 boothowto |= RB_HALT; 845 break; 846 847 #if 0 848 case 'm': /* mini root present in memory */ 849 case 'M': 850 boothowto |= RB_MINIROOT; 851 break; 852 #endif 853 854 case 'n': /* askname */ 855 case 'N': 856 boothowto |= RB_ASKNAME; 857 break; 858 859 case 's': /* single-user (default, supported for sanity) */ 860 case 'S': 861 boothowto |= RB_SINGLE; 862 break; 863 864 case '-': 865 /* 866 * Just ignore this. It's not required, but it's 867 * common for it to be passed regardless. 868 */ 869 break; 870 871 default: 872 printf("Unrecognized boot flag '%c'.\n", *p); 873 break; 874 } 875 } 876 877 878 /* 879 * Figure out the number of cpus in the box, from RPB fields. 880 * Really. We mean it. 881 */ 882 for (i = 0; i < hwrpb->rpb_pcs_cnt; i++) { 883 struct pcs *pcsp; 884 885 pcsp = LOCATE_PCS(hwrpb, i); 886 if ((pcsp->pcs_flags & PCS_PP) != 0) 887 ncpus++; 888 } 889 890 /* 891 * Initialize debuggers, and break into them if appropriate. 892 */ 893 #ifdef DDB 894 db_machine_init(); 895 ddb_init(ksym_start, ksym_end); 896 if (boothowto & RB_KDB) 897 Debugger(); 898 #endif 899 #ifdef KGDB 900 if (boothowto & RB_KDB) 901 kgdb_connect(0); 902 #endif 903 /* 904 * Figure out our clock frequency, from RPB fields. 905 */ 906 hz = hwrpb->rpb_intr_freq >> 12; 907 if (!(60 <= hz && hz <= 10240)) { 908 hz = 1024; 909 #ifdef DIAGNOSTIC 910 printf("WARNING: unbelievable rpb_intr_freq: %ld (%d hz)\n", 911 hwrpb->rpb_intr_freq, hz); 912 #endif 913 } 914 } 915 916 /* 917 * Allocate space for system data structures. We are given 918 * a starting virtual address and we return a final virtual 919 * address; along the way we set each data structure pointer. 920 * 921 * We call allocsys() with 0 to find out how much space we want, 922 * allocate that much and fill it with zeroes, and the call 923 * allocsys() again with the correct base virtual address. 924 */ 925 caddr_t 926 allocsys(v) 927 caddr_t v; 928 { 929 930 #define valloc(name, type, num) \ 931 (name) = (type *)v; v = (caddr_t)ALIGN((name)+(num)) 932 933 #ifdef REAL_CLISTS 934 valloc(cfree, struct cblock, nclist); 935 #endif 936 valloc(callout, struct callout, ncallout); 937 #ifdef SYSVSHM 938 valloc(shmsegs, struct shmid_ds, shminfo.shmmni); 939 #endif 940 #ifdef SYSVSEM 941 valloc(sema, struct semid_ds, seminfo.semmni); 942 valloc(sem, struct sem, seminfo.semmns); 943 /* This is pretty disgusting! */ 944 valloc(semu, int, (seminfo.semmnu * seminfo.semusz) / sizeof(int)); 945 #endif 946 #ifdef SYSVMSG 947 valloc(msgpool, char, msginfo.msgmax); 948 valloc(msgmaps, struct msgmap, msginfo.msgseg); 949 valloc(msghdrs, struct msg, msginfo.msgtql); 950 valloc(msqids, struct msqid_ds, msginfo.msgmni); 951 #endif 952 953 /* 954 * Determine how many buffers to allocate. 955 * We allocate 10% of memory for buffer space. Insure a 956 * minimum of 16 buffers. We allocate 1/2 as many swap buffer 957 * headers as file i/o buffers. 958 */ 959 if (bufpages == 0) 960 bufpages = (physmem * 10) / (CLSIZE * 100); 961 if (nbuf == 0) { 962 nbuf = bufpages; 963 if (nbuf < 16) 964 nbuf = 16; 965 } 966 if (nswbuf == 0) { 967 nswbuf = (nbuf / 2) &~ 1; /* force even */ 968 if (nswbuf > 256) 969 nswbuf = 256; /* sanity */ 970 } 971 #if !defined(UVM) 972 valloc(swbuf, struct buf, nswbuf); 973 #endif 974 valloc(buf, struct buf, nbuf); 975 976 /* 977 * There appears to be a correlation between the number 978 * of processor slots defined in the HWRPB and the whami 979 * value that can be returned. 980 */ 981 valloc(mchkinfo_all_cpus, struct mchkinfo, hwrpb->rpb_pcs_cnt); 982 983 return (v); 984 #undef valloc 985 } 986 987 void 988 consinit() 989 { 990 991 /* 992 * Everything related to console initialization is done 993 * in alpha_init(). 994 */ 995 #if defined(DIAGNOSTIC) && defined(_PMAP_MAY_USE_PROM_CONSOLE) 996 printf("consinit: %susing prom console\n", 997 pmap_uses_prom_console() ? "" : "not "); 998 #endif 999 } 1000 1001 #include "pckbc.h" 1002 #include "pckbd.h" 1003 #if (NPCKBC > 0) && (NPCKBD == 0) 1004 1005 #include <machine/bus.h> 1006 #include <dev/isa/pckbcvar.h> 1007 1008 /* 1009 * This is called by the pbkbc driver if no pckbd is configured. 1010 * On the i386, it is used to glue in the old, deprecated console 1011 * code. On the Alpha, it does nothing. 1012 */ 1013 int 1014 pckbc_machdep_cnattach(kbctag, kbcslot) 1015 pckbc_tag_t kbctag; 1016 pckbc_slot_t kbcslot; 1017 { 1018 1019 return (ENXIO); 1020 } 1021 #endif /* NPCKBC > 0 && NPCKBD == 0 */ 1022 1023 void 1024 cpu_startup() 1025 { 1026 register unsigned i; 1027 int base, residual; 1028 vaddr_t minaddr, maxaddr; 1029 vsize_t size; 1030 #if defined(DEBUG) 1031 extern int pmapdebug; 1032 int opmapdebug = pmapdebug; 1033 1034 pmapdebug = 0; 1035 #endif 1036 1037 /* 1038 * Good {morning,afternoon,evening,night}. 1039 */ 1040 printf(version); 1041 identifycpu(); 1042 printf("real mem = %lu (%lu reserved for PROM, %lu used by NetBSD)\n", 1043 ((psize_t) totalphysmem << (psize_t) PAGE_SHIFT), 1044 ptoa(resvmem), ptoa(physmem)); 1045 if (unusedmem) 1046 printf("WARNING: unused memory = %d bytes\n", ctob(unusedmem)); 1047 if (unknownmem) 1048 printf("WARNING: %d bytes of memory with unknown purpose\n", 1049 ctob(unknownmem)); 1050 1051 /* 1052 * Allocate virtual address space for file I/O buffers. 1053 * Note they are different than the array of headers, 'buf', 1054 * and usually occupy more virtual memory than physical. 1055 */ 1056 size = MAXBSIZE * nbuf; 1057 #if defined(UVM) 1058 if (uvm_map(kernel_map, (vaddr_t *) &buffers, round_page(size), 1059 NULL, UVM_UNKNOWN_OFFSET, 1060 UVM_MAPFLAG(UVM_PROT_NONE, UVM_PROT_NONE, UVM_INH_NONE, 1061 UVM_ADV_NORMAL, 0)) != KERN_SUCCESS) 1062 panic("startup: cannot allocate VM for buffers"); 1063 #else 1064 buffer_map = kmem_suballoc(kernel_map, (vaddr_t *)&buffers, 1065 &maxaddr, size, TRUE); 1066 minaddr = (vaddr_t)buffers; 1067 if (vm_map_find(buffer_map, vm_object_allocate(size), (vaddr_t)0, 1068 &minaddr, size, FALSE) != KERN_SUCCESS) 1069 panic("startup: cannot allocate buffers"); 1070 #endif /* UVM */ 1071 base = bufpages / nbuf; 1072 residual = bufpages % nbuf; 1073 for (i = 0; i < nbuf; i++) { 1074 #if defined(UVM) 1075 vsize_t curbufsize; 1076 vaddr_t curbuf; 1077 struct vm_page *pg; 1078 1079 /* 1080 * Each buffer has MAXBSIZE bytes of VM space allocated. Of 1081 * that MAXBSIZE space, we allocate and map (base+1) pages 1082 * for the first "residual" buffers, and then we allocate 1083 * "base" pages for the rest. 1084 */ 1085 curbuf = (vaddr_t) buffers + (i * MAXBSIZE); 1086 curbufsize = CLBYTES * ((i < residual) ? (base+1) : base); 1087 1088 while (curbufsize) { 1089 pg = uvm_pagealloc(NULL, 0, NULL); 1090 if (pg == NULL) 1091 panic("cpu_startup: not enough memory for " 1092 "buffer cache"); 1093 #if defined(PMAP_NEW) 1094 pmap_kenter_pgs(curbuf, &pg, 1); 1095 #else 1096 pmap_enter(kernel_map->pmap, curbuf, 1097 VM_PAGE_TO_PHYS(pg), VM_PROT_ALL, TRUE); 1098 #endif 1099 curbuf += PAGE_SIZE; 1100 curbufsize -= PAGE_SIZE; 1101 } 1102 #else /* ! UVM */ 1103 vsize_t curbufsize; 1104 vaddr_t curbuf; 1105 1106 /* 1107 * First <residual> buffers get (base+1) physical pages 1108 * allocated for them. The rest get (base) physical pages. 1109 * 1110 * The rest of each buffer occupies virtual space, 1111 * but has no physical memory allocated for it. 1112 */ 1113 curbuf = (vaddr_t)buffers + i * MAXBSIZE; 1114 curbufsize = CLBYTES * (i < residual ? base+1 : base); 1115 vm_map_pageable(buffer_map, curbuf, curbuf+curbufsize, FALSE); 1116 vm_map_simplify(buffer_map, curbuf); 1117 #endif /* UVM */ 1118 } 1119 /* 1120 * Allocate a submap for exec arguments. This map effectively 1121 * limits the number of processes exec'ing at any time. 1122 */ 1123 #if defined(UVM) 1124 exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 1125 16 * NCARGS, TRUE, FALSE, NULL); 1126 #else 1127 exec_map = kmem_suballoc(kernel_map, &minaddr, &maxaddr, 1128 16 * NCARGS, TRUE); 1129 #endif 1130 1131 /* 1132 * Allocate a submap for physio 1133 */ 1134 #if defined(UVM) 1135 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 1136 VM_PHYS_SIZE, TRUE, FALSE, NULL); 1137 #else 1138 phys_map = kmem_suballoc(kernel_map, &minaddr, &maxaddr, 1139 VM_PHYS_SIZE, TRUE); 1140 #endif 1141 1142 /* 1143 * Finally, allocate mbuf cluster submap. 1144 */ 1145 #if defined(UVM) 1146 mb_map = uvm_km_suballoc(kernel_map, (vaddr_t *)&mbutl, &maxaddr, 1147 VM_MBUF_SIZE, FALSE, FALSE, NULL); 1148 #else 1149 mb_map = kmem_suballoc(kernel_map, (vaddr_t *)&mbutl, &maxaddr, 1150 VM_MBUF_SIZE, FALSE); 1151 #endif 1152 /* 1153 * Initialize callouts 1154 */ 1155 callfree = callout; 1156 for (i = 1; i < ncallout; i++) 1157 callout[i-1].c_next = &callout[i]; 1158 callout[i-1].c_next = NULL; 1159 1160 #if defined(DEBUG) 1161 pmapdebug = opmapdebug; 1162 #endif 1163 #if defined(UVM) 1164 printf("avail mem = %ld\n", (long)ptoa(uvmexp.free)); 1165 #else 1166 printf("avail mem = %ld\n", (long)ptoa(cnt.v_free_count)); 1167 #endif 1168 #if 0 1169 { 1170 extern u_long pmap_pages_stolen; 1171 printf("stolen memory for VM structures = %ld bytes\n", 1172 pmap_pages_stolen * PAGE_SIZE); 1173 } 1174 #endif 1175 printf("using %ld buffers containing %ld bytes of memory\n", 1176 (long)nbuf, (long)(bufpages * CLBYTES)); 1177 1178 /* 1179 * Set up buffers, so they can be used to read disk labels. 1180 */ 1181 bufinit(); 1182 1183 /* 1184 * Set up the HWPCB so that it's safe to configure secondary 1185 * CPUs. 1186 */ 1187 hwrpb_primary_init(); 1188 1189 /* 1190 * Configure the system. 1191 */ 1192 configure(); 1193 } 1194 1195 /* 1196 * Retrieve the platform name from the DSR. 1197 */ 1198 const char * 1199 alpha_dsr_sysname() 1200 { 1201 struct dsrdb *dsr; 1202 const char *sysname; 1203 1204 /* 1205 * DSR does not exist on early HWRPB versions. 1206 */ 1207 if (hwrpb->rpb_version < HWRPB_DSRDB_MINVERS) 1208 return (NULL); 1209 1210 dsr = (struct dsrdb *)(((caddr_t)hwrpb) + hwrpb->rpb_dsrdb_off); 1211 sysname = (const char *)((caddr_t)dsr + (dsr->dsr_sysname_off + 1212 sizeof(u_int64_t))); 1213 return (sysname); 1214 } 1215 1216 /* 1217 * Lookup the system specified system variation in the provided table, 1218 * returning the model string on match. 1219 */ 1220 const char * 1221 alpha_variation_name(variation, avtp) 1222 u_int64_t variation; 1223 const struct alpha_variation_table *avtp; 1224 { 1225 int i; 1226 1227 for (i = 0; avtp[i].avt_model != NULL; i++) 1228 if (avtp[i].avt_variation == variation) 1229 return (avtp[i].avt_model); 1230 return (NULL); 1231 } 1232 1233 /* 1234 * Generate a default platform name based for unknown system variations. 1235 */ 1236 const char * 1237 alpha_unknown_sysname() 1238 { 1239 static char s[128]; /* safe size */ 1240 1241 sprintf(s, "%s family, unknown model variation 0x%lx", 1242 platform.family, hwrpb->rpb_variation & SV_ST_MASK); 1243 return ((const char *)s); 1244 } 1245 1246 void 1247 identifycpu() 1248 { 1249 1250 /* 1251 * print out CPU identification information. 1252 */ 1253 printf("%s, %ldMHz\n", cpu_model, 1254 hwrpb->rpb_cc_freq / 1000000); /* XXX true for 21164? */ 1255 printf("%ld byte page size, %d processor%s.\n", 1256 hwrpb->rpb_page_size, ncpus, ncpus == 1 ? "" : "s"); 1257 #if 0 1258 /* this isn't defined for any systems that we run on? */ 1259 printf("serial number 0x%lx 0x%lx\n", 1260 ((long *)hwrpb->rpb_ssn)[0], ((long *)hwrpb->rpb_ssn)[1]); 1261 1262 /* and these aren't particularly useful! */ 1263 printf("variation: 0x%lx, revision 0x%lx\n", 1264 hwrpb->rpb_variation, *(long *)hwrpb->rpb_revision); 1265 #endif 1266 } 1267 1268 int waittime = -1; 1269 struct pcb dumppcb; 1270 1271 void 1272 cpu_reboot(howto, bootstr) 1273 int howto; 1274 char *bootstr; 1275 { 1276 extern int cold; 1277 #if defined(MULTIPROCESSOR) 1278 #if 0 /* XXX See below. */ 1279 u_long cpu_id; 1280 #endif 1281 #endif 1282 1283 #if defined(MULTIPROCESSOR) 1284 /* We must be running on the primary CPU. */ 1285 if (alpha_pal_whami() != hwrpb->rpb_primary_cpu_id) 1286 panic("cpu_reboot: not on primary CPU!"); 1287 #endif 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 #if defined(MULTIPROCESSOR) 1327 #if 0 /* XXX doesn't work when called from here?! */ 1328 /* Kill off any secondary CPUs. */ 1329 for (cpu_id = 0; cpu_id < hwrpb->rpb_pcs_cnt; cpu_id++) { 1330 if (cpu_id == hwrpb->rpb_primary_cpu_id || 1331 cpus[cpu_id] == NULL) 1332 continue; 1333 cpu_halt_secondary(cpu_id); 1334 } 1335 #endif 1336 #endif 1337 1338 #ifdef BOOTKEY 1339 printf("hit any key to %s...\n", howto & RB_HALT ? "halt" : "reboot"); 1340 cnpollc(1); /* for proper keyboard command handling */ 1341 cngetc(); 1342 cnpollc(0); 1343 printf("\n"); 1344 #endif 1345 1346 /* Finally, powerdown/halt/reboot the system. */ 1347 if ((howto && RB_POWERDOWN) == RB_POWERDOWN && 1348 platform.powerdown != NULL) { 1349 (*platform.powerdown)(); 1350 printf("WARNING: powerdown failed!\n"); 1351 } 1352 printf("%s\n\n", howto & RB_HALT ? "halted." : "rebooting..."); 1353 prom_halt(howto & RB_HALT); 1354 /*NOTREACHED*/ 1355 } 1356 1357 /* 1358 * These variables are needed by /sbin/savecore 1359 */ 1360 u_long dumpmag = 0x8fca0101; /* magic number */ 1361 int dumpsize = 0; /* pages */ 1362 long dumplo = 0; /* blocks */ 1363 1364 /* 1365 * cpu_dumpsize: calculate size of machine-dependent kernel core dump headers. 1366 */ 1367 int 1368 cpu_dumpsize() 1369 { 1370 int size; 1371 1372 size = ALIGN(sizeof(kcore_seg_t)) + ALIGN(sizeof(cpu_kcore_hdr_t)) + 1373 ALIGN(mem_cluster_cnt * sizeof(phys_ram_seg_t)); 1374 if (roundup(size, dbtob(1)) != dbtob(1)) 1375 return -1; 1376 1377 return (1); 1378 } 1379 1380 /* 1381 * cpu_dump_mempagecnt: calculate size of RAM (in pages) to be dumped. 1382 */ 1383 u_long 1384 cpu_dump_mempagecnt() 1385 { 1386 u_long i, n; 1387 1388 n = 0; 1389 for (i = 0; i < mem_cluster_cnt; i++) 1390 n += atop(mem_clusters[i].size); 1391 return (n); 1392 } 1393 1394 /* 1395 * cpu_dump: dump machine-dependent kernel core dump headers. 1396 */ 1397 int 1398 cpu_dump() 1399 { 1400 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1401 char buf[dbtob(1)]; 1402 kcore_seg_t *segp; 1403 cpu_kcore_hdr_t *cpuhdrp; 1404 phys_ram_seg_t *memsegp; 1405 int i; 1406 1407 dump = bdevsw[major(dumpdev)].d_dump; 1408 1409 bzero(buf, sizeof buf); 1410 segp = (kcore_seg_t *)buf; 1411 cpuhdrp = (cpu_kcore_hdr_t *)&buf[ALIGN(sizeof(*segp))]; 1412 memsegp = (phys_ram_seg_t *)&buf[ ALIGN(sizeof(*segp)) + 1413 ALIGN(sizeof(*cpuhdrp))]; 1414 1415 /* 1416 * Generate a segment header. 1417 */ 1418 CORE_SETMAGIC(*segp, KCORE_MAGIC, MID_MACHINE, CORE_CPU); 1419 segp->c_size = dbtob(1) - ALIGN(sizeof(*segp)); 1420 1421 /* 1422 * Add the machine-dependent header info. 1423 */ 1424 cpuhdrp->lev1map_pa = ALPHA_K0SEG_TO_PHYS((vaddr_t)kernel_lev1map); 1425 cpuhdrp->page_size = PAGE_SIZE; 1426 cpuhdrp->nmemsegs = mem_cluster_cnt; 1427 1428 /* 1429 * Fill in the memory segment descriptors. 1430 */ 1431 for (i = 0; i < mem_cluster_cnt; i++) { 1432 memsegp[i].start = mem_clusters[i].start; 1433 memsegp[i].size = mem_clusters[i].size & ~PAGE_MASK; 1434 } 1435 1436 return (dump(dumpdev, dumplo, (caddr_t)buf, dbtob(1))); 1437 } 1438 1439 /* 1440 * This is called by main to set dumplo and dumpsize. 1441 * Dumps always skip the first CLBYTES of disk space 1442 * in case there might be a disk label stored there. 1443 * If there is extra space, put dump at the end to 1444 * reduce the chance that swapping trashes it. 1445 */ 1446 void 1447 cpu_dumpconf() 1448 { 1449 int nblks, dumpblks; /* size of dump area */ 1450 int maj; 1451 1452 if (dumpdev == NODEV) 1453 goto bad; 1454 maj = major(dumpdev); 1455 if (maj < 0 || maj >= nblkdev) 1456 panic("dumpconf: bad dumpdev=0x%x", dumpdev); 1457 if (bdevsw[maj].d_psize == NULL) 1458 goto bad; 1459 nblks = (*bdevsw[maj].d_psize)(dumpdev); 1460 if (nblks <= ctod(1)) 1461 goto bad; 1462 1463 dumpblks = cpu_dumpsize(); 1464 if (dumpblks < 0) 1465 goto bad; 1466 dumpblks += ctod(cpu_dump_mempagecnt()); 1467 1468 /* If dump won't fit (incl. room for possible label), punt. */ 1469 if (dumpblks > (nblks - ctod(1))) 1470 goto bad; 1471 1472 /* Put dump at end of partition */ 1473 dumplo = nblks - dumpblks; 1474 1475 /* dumpsize is in page units, and doesn't include headers. */ 1476 dumpsize = cpu_dump_mempagecnt(); 1477 return; 1478 1479 bad: 1480 dumpsize = 0; 1481 return; 1482 } 1483 1484 /* 1485 * Dump the kernel's image to the swap partition. 1486 */ 1487 #define BYTES_PER_DUMP NBPG 1488 1489 void 1490 dumpsys() 1491 { 1492 u_long totalbytesleft, bytes, i, n, memcl; 1493 u_long maddr; 1494 int psize; 1495 daddr_t blkno; 1496 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1497 int error; 1498 1499 /* Save registers. */ 1500 savectx(&dumppcb); 1501 1502 msgbufenabled = 0; /* don't record dump msgs in msgbuf */ 1503 if (dumpdev == NODEV) 1504 return; 1505 1506 /* 1507 * For dumps during autoconfiguration, 1508 * if dump device has already configured... 1509 */ 1510 if (dumpsize == 0) 1511 cpu_dumpconf(); 1512 if (dumplo <= 0) { 1513 printf("\ndump to dev %u,%u not possible\n", major(dumpdev), 1514 minor(dumpdev)); 1515 return; 1516 } 1517 printf("\ndumping to dev %u,%u offset %ld\n", major(dumpdev), 1518 minor(dumpdev), dumplo); 1519 1520 psize = (*bdevsw[major(dumpdev)].d_psize)(dumpdev); 1521 printf("dump "); 1522 if (psize == -1) { 1523 printf("area unavailable\n"); 1524 return; 1525 } 1526 1527 /* XXX should purge all outstanding keystrokes. */ 1528 1529 if ((error = cpu_dump()) != 0) 1530 goto err; 1531 1532 totalbytesleft = ptoa(cpu_dump_mempagecnt()); 1533 blkno = dumplo + cpu_dumpsize(); 1534 dump = bdevsw[major(dumpdev)].d_dump; 1535 error = 0; 1536 1537 for (memcl = 0; memcl < mem_cluster_cnt; memcl++) { 1538 maddr = mem_clusters[memcl].start; 1539 bytes = mem_clusters[memcl].size & ~PAGE_MASK; 1540 1541 for (i = 0; i < bytes; i += n, totalbytesleft -= n) { 1542 1543 /* Print out how many MBs we to go. */ 1544 if ((totalbytesleft % (1024*1024)) == 0) 1545 printf("%d ", totalbytesleft / (1024 * 1024)); 1546 1547 /* Limit size for next transfer. */ 1548 n = bytes - i; 1549 if (n > BYTES_PER_DUMP) 1550 n = BYTES_PER_DUMP; 1551 1552 error = (*dump)(dumpdev, blkno, 1553 (caddr_t)ALPHA_PHYS_TO_K0SEG(maddr), n); 1554 if (error) 1555 goto err; 1556 maddr += n; 1557 blkno += btodb(n); /* XXX? */ 1558 1559 /* XXX should look for keystrokes, to cancel. */ 1560 } 1561 } 1562 1563 err: 1564 switch (error) { 1565 1566 case ENXIO: 1567 printf("device bad\n"); 1568 break; 1569 1570 case EFAULT: 1571 printf("device not ready\n"); 1572 break; 1573 1574 case EINVAL: 1575 printf("area improper\n"); 1576 break; 1577 1578 case EIO: 1579 printf("i/o error\n"); 1580 break; 1581 1582 case EINTR: 1583 printf("aborted from console\n"); 1584 break; 1585 1586 case 0: 1587 printf("succeeded\n"); 1588 break; 1589 1590 default: 1591 printf("error %d\n", error); 1592 break; 1593 } 1594 printf("\n\n"); 1595 delay(1000); 1596 } 1597 1598 void 1599 frametoreg(framep, regp) 1600 struct trapframe *framep; 1601 struct reg *regp; 1602 { 1603 1604 regp->r_regs[R_V0] = framep->tf_regs[FRAME_V0]; 1605 regp->r_regs[R_T0] = framep->tf_regs[FRAME_T0]; 1606 regp->r_regs[R_T1] = framep->tf_regs[FRAME_T1]; 1607 regp->r_regs[R_T2] = framep->tf_regs[FRAME_T2]; 1608 regp->r_regs[R_T3] = framep->tf_regs[FRAME_T3]; 1609 regp->r_regs[R_T4] = framep->tf_regs[FRAME_T4]; 1610 regp->r_regs[R_T5] = framep->tf_regs[FRAME_T5]; 1611 regp->r_regs[R_T6] = framep->tf_regs[FRAME_T6]; 1612 regp->r_regs[R_T7] = framep->tf_regs[FRAME_T7]; 1613 regp->r_regs[R_S0] = framep->tf_regs[FRAME_S0]; 1614 regp->r_regs[R_S1] = framep->tf_regs[FRAME_S1]; 1615 regp->r_regs[R_S2] = framep->tf_regs[FRAME_S2]; 1616 regp->r_regs[R_S3] = framep->tf_regs[FRAME_S3]; 1617 regp->r_regs[R_S4] = framep->tf_regs[FRAME_S4]; 1618 regp->r_regs[R_S5] = framep->tf_regs[FRAME_S5]; 1619 regp->r_regs[R_S6] = framep->tf_regs[FRAME_S6]; 1620 regp->r_regs[R_A0] = framep->tf_regs[FRAME_A0]; 1621 regp->r_regs[R_A1] = framep->tf_regs[FRAME_A1]; 1622 regp->r_regs[R_A2] = framep->tf_regs[FRAME_A2]; 1623 regp->r_regs[R_A3] = framep->tf_regs[FRAME_A3]; 1624 regp->r_regs[R_A4] = framep->tf_regs[FRAME_A4]; 1625 regp->r_regs[R_A5] = framep->tf_regs[FRAME_A5]; 1626 regp->r_regs[R_T8] = framep->tf_regs[FRAME_T8]; 1627 regp->r_regs[R_T9] = framep->tf_regs[FRAME_T9]; 1628 regp->r_regs[R_T10] = framep->tf_regs[FRAME_T10]; 1629 regp->r_regs[R_T11] = framep->tf_regs[FRAME_T11]; 1630 regp->r_regs[R_RA] = framep->tf_regs[FRAME_RA]; 1631 regp->r_regs[R_T12] = framep->tf_regs[FRAME_T12]; 1632 regp->r_regs[R_AT] = framep->tf_regs[FRAME_AT]; 1633 regp->r_regs[R_GP] = framep->tf_regs[FRAME_GP]; 1634 /* regp->r_regs[R_SP] = framep->tf_regs[FRAME_SP]; XXX */ 1635 regp->r_regs[R_ZERO] = 0; 1636 } 1637 1638 void 1639 regtoframe(regp, framep) 1640 struct reg *regp; 1641 struct trapframe *framep; 1642 { 1643 1644 framep->tf_regs[FRAME_V0] = regp->r_regs[R_V0]; 1645 framep->tf_regs[FRAME_T0] = regp->r_regs[R_T0]; 1646 framep->tf_regs[FRAME_T1] = regp->r_regs[R_T1]; 1647 framep->tf_regs[FRAME_T2] = regp->r_regs[R_T2]; 1648 framep->tf_regs[FRAME_T3] = regp->r_regs[R_T3]; 1649 framep->tf_regs[FRAME_T4] = regp->r_regs[R_T4]; 1650 framep->tf_regs[FRAME_T5] = regp->r_regs[R_T5]; 1651 framep->tf_regs[FRAME_T6] = regp->r_regs[R_T6]; 1652 framep->tf_regs[FRAME_T7] = regp->r_regs[R_T7]; 1653 framep->tf_regs[FRAME_S0] = regp->r_regs[R_S0]; 1654 framep->tf_regs[FRAME_S1] = regp->r_regs[R_S1]; 1655 framep->tf_regs[FRAME_S2] = regp->r_regs[R_S2]; 1656 framep->tf_regs[FRAME_S3] = regp->r_regs[R_S3]; 1657 framep->tf_regs[FRAME_S4] = regp->r_regs[R_S4]; 1658 framep->tf_regs[FRAME_S5] = regp->r_regs[R_S5]; 1659 framep->tf_regs[FRAME_S6] = regp->r_regs[R_S6]; 1660 framep->tf_regs[FRAME_A0] = regp->r_regs[R_A0]; 1661 framep->tf_regs[FRAME_A1] = regp->r_regs[R_A1]; 1662 framep->tf_regs[FRAME_A2] = regp->r_regs[R_A2]; 1663 framep->tf_regs[FRAME_A3] = regp->r_regs[R_A3]; 1664 framep->tf_regs[FRAME_A4] = regp->r_regs[R_A4]; 1665 framep->tf_regs[FRAME_A5] = regp->r_regs[R_A5]; 1666 framep->tf_regs[FRAME_T8] = regp->r_regs[R_T8]; 1667 framep->tf_regs[FRAME_T9] = regp->r_regs[R_T9]; 1668 framep->tf_regs[FRAME_T10] = regp->r_regs[R_T10]; 1669 framep->tf_regs[FRAME_T11] = regp->r_regs[R_T11]; 1670 framep->tf_regs[FRAME_RA] = regp->r_regs[R_RA]; 1671 framep->tf_regs[FRAME_T12] = regp->r_regs[R_T12]; 1672 framep->tf_regs[FRAME_AT] = regp->r_regs[R_AT]; 1673 framep->tf_regs[FRAME_GP] = regp->r_regs[R_GP]; 1674 /* framep->tf_regs[FRAME_SP] = regp->r_regs[R_SP]; XXX */ 1675 /* ??? = regp->r_regs[R_ZERO]; */ 1676 } 1677 1678 void 1679 printregs(regp) 1680 struct reg *regp; 1681 { 1682 int i; 1683 1684 for (i = 0; i < 32; i++) 1685 printf("R%d:\t0x%016lx%s", i, regp->r_regs[i], 1686 i & 1 ? "\n" : "\t"); 1687 } 1688 1689 void 1690 regdump(framep) 1691 struct trapframe *framep; 1692 { 1693 struct reg reg; 1694 1695 frametoreg(framep, ®); 1696 reg.r_regs[R_SP] = alpha_pal_rdusp(); 1697 1698 printf("REGISTERS:\n"); 1699 printregs(®); 1700 } 1701 1702 #ifdef DEBUG 1703 int sigdebug = 0; 1704 int sigpid = 0; 1705 #define SDB_FOLLOW 0x01 1706 #define SDB_KSTACK 0x02 1707 #endif 1708 1709 /* 1710 * Send an interrupt to process. 1711 */ 1712 void 1713 sendsig(catcher, sig, mask, code) 1714 sig_t catcher; 1715 int sig; 1716 sigset_t *mask; 1717 u_long code; 1718 { 1719 struct proc *p = curproc; 1720 struct sigcontext *scp, ksc; 1721 struct trapframe *frame; 1722 struct sigacts *psp = p->p_sigacts; 1723 int onstack, fsize, rndfsize; 1724 extern struct proc *fpcurproc; 1725 1726 frame = p->p_md.md_tf; 1727 1728 /* Do we need to jump onto the signal stack? */ 1729 onstack = 1730 (psp->ps_sigstk.ss_flags & (SS_DISABLE | SS_ONSTACK)) == 0 && 1731 (psp->ps_sigact[sig].sa_flags & SA_ONSTACK) != 0; 1732 1733 /* Allocate space for the signal handler context. */ 1734 fsize = sizeof(ksc); 1735 rndfsize = ((fsize + 15) / 16) * 16; 1736 1737 if (onstack) 1738 scp = (struct sigcontext *)((caddr_t)psp->ps_sigstk.ss_sp + 1739 psp->ps_sigstk.ss_size); 1740 else 1741 scp = (struct sigcontext *)(alpha_pal_rdusp()); 1742 scp = (struct sigcontext *)((caddr_t)scp - rndfsize); 1743 1744 #ifdef DEBUG 1745 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1746 printf("sendsig(%d): sig %d ssp %p usp %p\n", p->p_pid, 1747 sig, &onstack, scp); 1748 #endif 1749 1750 /* Build stack frame for signal trampoline. */ 1751 ksc.sc_pc = frame->tf_regs[FRAME_PC]; 1752 ksc.sc_ps = frame->tf_regs[FRAME_PS]; 1753 1754 /* Save register context. */ 1755 frametoreg(frame, (struct reg *)ksc.sc_regs); 1756 ksc.sc_regs[R_ZERO] = 0xACEDBADE; /* magic number */ 1757 ksc.sc_regs[R_SP] = alpha_pal_rdusp(); 1758 1759 /* save the floating-point state, if necessary, then copy it. */ 1760 if (p == fpcurproc) { 1761 alpha_pal_wrfen(1); 1762 savefpstate(&p->p_addr->u_pcb.pcb_fp); 1763 alpha_pal_wrfen(0); 1764 fpcurproc = NULL; 1765 } 1766 ksc.sc_ownedfp = p->p_md.md_flags & MDP_FPUSED; 1767 bcopy(&p->p_addr->u_pcb.pcb_fp, (struct fpreg *)ksc.sc_fpregs, 1768 sizeof(struct fpreg)); 1769 ksc.sc_fp_control = 0; /* XXX ? */ 1770 bzero(ksc.sc_reserved, sizeof ksc.sc_reserved); /* XXX */ 1771 bzero(ksc.sc_xxx, sizeof ksc.sc_xxx); /* XXX */ 1772 1773 /* Save signal stack. */ 1774 ksc.sc_onstack = psp->ps_sigstk.ss_flags & SS_ONSTACK; 1775 1776 /* Save signal mask. */ 1777 ksc.sc_mask = *mask; 1778 1779 #ifdef COMPAT_13 1780 /* 1781 * XXX We always have to save an old style signal mask because 1782 * XXX we might be delivering a signal to a process which will 1783 * XXX escape from the signal in a non-standard way and invoke 1784 * XXX sigreturn() directly. 1785 */ 1786 { 1787 /* Note: it's a long in the stack frame. */ 1788 sigset13_t mask13; 1789 1790 native_sigset_to_sigset13(mask, &mask13); 1791 ksc.__sc_mask13 = mask13; 1792 } 1793 #endif 1794 1795 #ifdef COMPAT_OSF1 1796 /* 1797 * XXX Create an OSF/1-style sigcontext and associated goo. 1798 */ 1799 #endif 1800 1801 if (copyout(&ksc, (caddr_t)scp, fsize) != 0) { 1802 /* 1803 * Process has trashed its stack; give it an illegal 1804 * instruction to halt it in its tracks. 1805 */ 1806 #ifdef DEBUG 1807 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1808 printf("sendsig(%d): copyout failed on sig %d\n", 1809 p->p_pid, sig); 1810 #endif 1811 sigexit(p, SIGILL); 1812 /* NOTREACHED */ 1813 } 1814 #ifdef DEBUG 1815 if (sigdebug & SDB_FOLLOW) 1816 printf("sendsig(%d): sig %d scp %p code %lx\n", p->p_pid, sig, 1817 scp, code); 1818 #endif 1819 1820 /* Set up the registers to return to sigcode. */ 1821 frame->tf_regs[FRAME_PC] = (u_int64_t)psp->ps_sigcode; 1822 frame->tf_regs[FRAME_A0] = sig; 1823 frame->tf_regs[FRAME_A1] = code; 1824 frame->tf_regs[FRAME_A2] = (u_int64_t)scp; 1825 frame->tf_regs[FRAME_T12] = (u_int64_t)catcher; /* t12 is pv */ 1826 alpha_pal_wrusp((unsigned long)scp); 1827 1828 /* Remember that we're now on the signal stack. */ 1829 if (onstack) 1830 psp->ps_sigstk.ss_flags |= SS_ONSTACK; 1831 1832 #ifdef DEBUG 1833 if (sigdebug & SDB_FOLLOW) 1834 printf("sendsig(%d): pc %lx, catcher %lx\n", p->p_pid, 1835 frame->tf_regs[FRAME_PC], frame->tf_regs[FRAME_A3]); 1836 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1837 printf("sendsig(%d): sig %d returns\n", 1838 p->p_pid, sig); 1839 #endif 1840 } 1841 1842 /* 1843 * System call to cleanup state after a signal 1844 * has been taken. Reset signal mask and 1845 * stack state from context left by sendsig (above). 1846 * Return to previous pc and psl as specified by 1847 * context left by sendsig. Check carefully to 1848 * make sure that the user has not modified the 1849 * psl to gain improper priviledges or to cause 1850 * a machine fault. 1851 */ 1852 /* ARGSUSED */ 1853 int 1854 sys___sigreturn14(p, v, retval) 1855 struct proc *p; 1856 void *v; 1857 register_t *retval; 1858 { 1859 struct sys___sigreturn14_args /* { 1860 syscallarg(struct sigcontext *) sigcntxp; 1861 } */ *uap = v; 1862 struct sigcontext *scp, ksc; 1863 extern struct proc *fpcurproc; 1864 1865 /* 1866 * The trampoline code hands us the context. 1867 * It is unsafe to keep track of it ourselves, in the event that a 1868 * program jumps out of a signal handler. 1869 */ 1870 scp = SCARG(uap, sigcntxp); 1871 #ifdef DEBUG 1872 if (sigdebug & SDB_FOLLOW) 1873 printf("sigreturn: pid %d, scp %p\n", p->p_pid, scp); 1874 #endif 1875 if (ALIGN(scp) != (u_int64_t)scp) 1876 return (EINVAL); 1877 1878 if (copyin((caddr_t)scp, &ksc, sizeof(ksc)) != 0) 1879 return (EFAULT); 1880 1881 if (ksc.sc_regs[R_ZERO] != 0xACEDBADE) /* magic number */ 1882 return (EINVAL); 1883 1884 /* Restore register context. */ 1885 p->p_md.md_tf->tf_regs[FRAME_PC] = ksc.sc_pc; 1886 p->p_md.md_tf->tf_regs[FRAME_PS] = 1887 (ksc.sc_ps | ALPHA_PSL_USERSET) & ~ALPHA_PSL_USERCLR; 1888 1889 regtoframe((struct reg *)ksc.sc_regs, p->p_md.md_tf); 1890 alpha_pal_wrusp(ksc.sc_regs[R_SP]); 1891 1892 /* XXX ksc.sc_ownedfp ? */ 1893 if (p == fpcurproc) 1894 fpcurproc = NULL; 1895 bcopy((struct fpreg *)ksc.sc_fpregs, &p->p_addr->u_pcb.pcb_fp, 1896 sizeof(struct fpreg)); 1897 /* XXX ksc.sc_fp_control ? */ 1898 1899 /* Restore signal stack. */ 1900 if (ksc.sc_onstack & SS_ONSTACK) 1901 p->p_sigacts->ps_sigstk.ss_flags |= SS_ONSTACK; 1902 else 1903 p->p_sigacts->ps_sigstk.ss_flags &= ~SS_ONSTACK; 1904 1905 /* Restore signal mask. */ 1906 (void) sigprocmask1(p, SIG_SETMASK, &ksc.sc_mask, 0); 1907 1908 #ifdef DEBUG 1909 if (sigdebug & SDB_FOLLOW) 1910 printf("sigreturn(%d): returns\n", p->p_pid); 1911 #endif 1912 return (EJUSTRETURN); 1913 } 1914 1915 /* 1916 * machine dependent system variables. 1917 */ 1918 int 1919 cpu_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 1920 int *name; 1921 u_int namelen; 1922 void *oldp; 1923 size_t *oldlenp; 1924 void *newp; 1925 size_t newlen; 1926 struct proc *p; 1927 { 1928 dev_t consdev; 1929 1930 /* all sysctl names at this level are terminal */ 1931 if (namelen != 1) 1932 return (ENOTDIR); /* overloaded */ 1933 1934 switch (name[0]) { 1935 case CPU_CONSDEV: 1936 if (cn_tab != NULL) 1937 consdev = cn_tab->cn_dev; 1938 else 1939 consdev = NODEV; 1940 return (sysctl_rdstruct(oldp, oldlenp, newp, &consdev, 1941 sizeof consdev)); 1942 1943 case CPU_ROOT_DEVICE: 1944 return (sysctl_rdstring(oldp, oldlenp, newp, 1945 root_device->dv_xname)); 1946 1947 case CPU_UNALIGNED_PRINT: 1948 return (sysctl_int(oldp, oldlenp, newp, newlen, 1949 &alpha_unaligned_print)); 1950 1951 case CPU_UNALIGNED_FIX: 1952 return (sysctl_int(oldp, oldlenp, newp, newlen, 1953 &alpha_unaligned_fix)); 1954 1955 case CPU_UNALIGNED_SIGBUS: 1956 return (sysctl_int(oldp, oldlenp, newp, newlen, 1957 &alpha_unaligned_sigbus)); 1958 1959 case CPU_BOOTED_KERNEL: 1960 return (sysctl_rdstring(oldp, oldlenp, newp, 1961 bootinfo.booted_kernel)); 1962 1963 default: 1964 return (EOPNOTSUPP); 1965 } 1966 /* NOTREACHED */ 1967 } 1968 1969 /* 1970 * Set registers on exec. 1971 */ 1972 void 1973 setregs(p, pack, stack) 1974 register struct proc *p; 1975 struct exec_package *pack; 1976 u_long stack; 1977 { 1978 struct trapframe *tfp = p->p_md.md_tf; 1979 extern struct proc *fpcurproc; 1980 #ifdef DEBUG 1981 int i; 1982 #endif 1983 1984 #ifdef DEBUG 1985 /* 1986 * Crash and dump, if the user requested it. 1987 */ 1988 if (boothowto & RB_DUMP) 1989 panic("crash requested by boot flags"); 1990 #endif 1991 1992 #ifdef DEBUG 1993 for (i = 0; i < FRAME_SIZE; i++) 1994 tfp->tf_regs[i] = 0xbabefacedeadbeef; 1995 #else 1996 bzero(tfp->tf_regs, FRAME_SIZE * sizeof tfp->tf_regs[0]); 1997 #endif 1998 bzero(&p->p_addr->u_pcb.pcb_fp, sizeof p->p_addr->u_pcb.pcb_fp); 1999 #define FP_RN 2 /* XXX */ 2000 p->p_addr->u_pcb.pcb_fp.fpr_cr = (long)FP_RN << 58; 2001 alpha_pal_wrusp(stack); 2002 tfp->tf_regs[FRAME_PS] = ALPHA_PSL_USERSET; 2003 tfp->tf_regs[FRAME_PC] = pack->ep_entry & ~3; 2004 2005 tfp->tf_regs[FRAME_A0] = stack; /* a0 = sp */ 2006 tfp->tf_regs[FRAME_A1] = 0; /* a1 = rtld cleanup */ 2007 tfp->tf_regs[FRAME_A2] = 0; /* a2 = rtld object */ 2008 tfp->tf_regs[FRAME_A3] = (u_int64_t)PS_STRINGS; /* a3 = ps_strings */ 2009 tfp->tf_regs[FRAME_T12] = tfp->tf_regs[FRAME_PC]; /* a.k.a. PV */ 2010 2011 p->p_md.md_flags &= ~MDP_FPUSED; 2012 if (fpcurproc == p) 2013 fpcurproc = NULL; 2014 } 2015 2016 void 2017 netintr() 2018 { 2019 int n, s; 2020 2021 s = splhigh(); 2022 n = netisr; 2023 netisr = 0; 2024 splx(s); 2025 2026 #define DONETISR(bit, fn) \ 2027 do { \ 2028 if (n & (1 << (bit))) \ 2029 fn; \ 2030 } while (0) 2031 2032 #ifdef INET 2033 #if NARP > 0 2034 DONETISR(NETISR_ARP, arpintr()); 2035 #endif 2036 DONETISR(NETISR_IP, ipintr()); 2037 #endif 2038 #ifdef NETATALK 2039 DONETISR(NETISR_ATALK, atintr()); 2040 #endif 2041 #ifdef NS 2042 DONETISR(NETISR_NS, nsintr()); 2043 #endif 2044 #ifdef ISO 2045 DONETISR(NETISR_ISO, clnlintr()); 2046 #endif 2047 #ifdef CCITT 2048 DONETISR(NETISR_CCITT, ccittintr()); 2049 #endif 2050 #ifdef NATM 2051 DONETISR(NETISR_NATM, natmintr()); 2052 #endif 2053 #if NPPP > 1 2054 DONETISR(NETISR_PPP, pppintr()); 2055 #endif 2056 2057 #undef DONETISR 2058 } 2059 2060 void 2061 do_sir() 2062 { 2063 u_int64_t n; 2064 2065 do { 2066 (void)splhigh(); 2067 n = ssir; 2068 ssir = 0; 2069 splsoft(); /* don't recurse through spl0() */ 2070 2071 #if defined(UVM) 2072 #define COUNT_SOFT uvmexp.softs++ 2073 #else 2074 #define COUNT_SOFT cnt.v_soft++ 2075 #endif 2076 2077 #define DO_SIR(bit, fn) \ 2078 do { \ 2079 if (n & (bit)) { \ 2080 COUNT_SOFT; \ 2081 fn; \ 2082 } \ 2083 } while (0) 2084 2085 DO_SIR(SIR_NET, netintr()); 2086 DO_SIR(SIR_CLOCK, softclock()); 2087 #if NCOM > 0 2088 DO_SIR(SIR_SERIAL, comsoft()); 2089 #endif 2090 2091 #undef COUNT_SOFT 2092 #undef DO_SIR 2093 } while (ssir != 0); 2094 } 2095 2096 int 2097 spl0() 2098 { 2099 2100 if (ssir) 2101 do_sir(); /* it lowers the IPL itself */ 2102 2103 return (alpha_pal_swpipl(ALPHA_PSL_IPL_0)); 2104 } 2105 2106 /* 2107 * The following primitives manipulate the run queues. _whichqs tells which 2108 * of the 32 queues _qs have processes in them. Setrunqueue puts processes 2109 * into queues, Remrunqueue removes them from queues. The running process is 2110 * on no queue, other processes are on a queue related to p->p_priority, 2111 * divided by 4 actually to shrink the 0-127 range of priorities into the 32 2112 * available queues. 2113 */ 2114 /* 2115 * setrunqueue(p) 2116 * proc *p; 2117 * 2118 * Call should be made at splclock(), and p->p_stat should be SRUN. 2119 */ 2120 2121 void 2122 setrunqueue(p) 2123 struct proc *p; 2124 { 2125 int bit; 2126 2127 /* firewall: p->p_back must be NULL */ 2128 if (p->p_back != NULL) 2129 panic("setrunqueue"); 2130 2131 bit = p->p_priority >> 2; 2132 whichqs |= (1 << bit); 2133 p->p_forw = (struct proc *)&qs[bit]; 2134 p->p_back = qs[bit].ph_rlink; 2135 p->p_back->p_forw = p; 2136 qs[bit].ph_rlink = p; 2137 } 2138 2139 /* 2140 * remrunqueue(p) 2141 * 2142 * Call should be made at splclock(). 2143 */ 2144 void 2145 remrunqueue(p) 2146 struct proc *p; 2147 { 2148 int bit; 2149 2150 bit = p->p_priority >> 2; 2151 if ((whichqs & (1 << bit)) == 0) 2152 panic("remrunqueue"); 2153 2154 p->p_back->p_forw = p->p_forw; 2155 p->p_forw->p_back = p->p_back; 2156 p->p_back = NULL; /* for firewall checking. */ 2157 2158 if ((struct proc *)&qs[bit] == qs[bit].ph_link) 2159 whichqs &= ~(1 << bit); 2160 } 2161 2162 /* 2163 * Return the best possible estimate of the time in the timeval 2164 * to which tvp points. Unfortunately, we can't read the hardware registers. 2165 * We guarantee that the time will be greater than the value obtained by a 2166 * previous call. 2167 */ 2168 void 2169 microtime(tvp) 2170 register struct timeval *tvp; 2171 { 2172 int s = splclock(); 2173 static struct timeval lasttime; 2174 2175 *tvp = time; 2176 #ifdef notdef 2177 tvp->tv_usec += clkread(); 2178 while (tvp->tv_usec > 1000000) { 2179 tvp->tv_sec++; 2180 tvp->tv_usec -= 1000000; 2181 } 2182 #endif 2183 if (tvp->tv_sec == lasttime.tv_sec && 2184 tvp->tv_usec <= lasttime.tv_usec && 2185 (tvp->tv_usec = lasttime.tv_usec + 1) > 1000000) { 2186 tvp->tv_sec++; 2187 tvp->tv_usec -= 1000000; 2188 } 2189 lasttime = *tvp; 2190 splx(s); 2191 } 2192 2193 /* 2194 * Wait "n" microseconds. 2195 */ 2196 void 2197 delay(n) 2198 unsigned long n; 2199 { 2200 long N = cycles_per_usec * (n); 2201 2202 while (N > 0) /* XXX */ 2203 N -= 3; /* XXX */ 2204 } 2205 2206 #if defined(COMPAT_OSF1) || 1 /* XXX */ 2207 void cpu_exec_ecoff_setregs __P((struct proc *, struct exec_package *, 2208 u_long)); 2209 2210 void 2211 cpu_exec_ecoff_setregs(p, epp, stack) 2212 struct proc *p; 2213 struct exec_package *epp; 2214 u_long stack; 2215 { 2216 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2217 2218 setregs(p, epp, stack); 2219 p->p_md.md_tf->tf_regs[FRAME_GP] = execp->a.gp_value; 2220 } 2221 2222 /* 2223 * cpu_exec_ecoff_hook(): 2224 * cpu-dependent ECOFF format hook for execve(). 2225 * 2226 * Do any machine-dependent diddling of the exec package when doing ECOFF. 2227 * 2228 */ 2229 int 2230 cpu_exec_ecoff_hook(p, epp) 2231 struct proc *p; 2232 struct exec_package *epp; 2233 { 2234 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2235 extern struct emul emul_netbsd; 2236 #ifdef COMPAT_OSF1 2237 extern struct emul emul_osf1; 2238 #endif 2239 2240 switch (execp->f.f_magic) { 2241 #ifdef COMPAT_OSF1 2242 case ECOFF_MAGIC_ALPHA: 2243 epp->ep_emul = &emul_osf1; 2244 break; 2245 #endif 2246 2247 case ECOFF_MAGIC_NETBSD_ALPHA: 2248 epp->ep_emul = &emul_netbsd; 2249 break; 2250 2251 default: 2252 return ENOEXEC; 2253 } 2254 return 0; 2255 } 2256 #endif 2257 2258 int 2259 alpha_pa_access(pa) 2260 u_long pa; 2261 { 2262 int i; 2263 2264 for (i = 0; i < mem_cluster_cnt; i++) { 2265 if (pa < mem_clusters[i].start) 2266 continue; 2267 if ((pa - mem_clusters[i].start) >= 2268 (mem_clusters[i].size & ~PAGE_MASK)) 2269 continue; 2270 return (mem_clusters[i].size & PAGE_MASK); /* prot */ 2271 } 2272 return (PROT_NONE); 2273 } 2274 2275 /* XXX XXX BEGIN XXX XXX */ 2276 paddr_t alpha_XXX_dmamap_or; /* XXX */ 2277 /* XXX */ 2278 paddr_t /* XXX */ 2279 alpha_XXX_dmamap(v) /* XXX */ 2280 vaddr_t v; /* XXX */ 2281 { /* XXX */ 2282 /* XXX */ 2283 return (vtophys(v) | alpha_XXX_dmamap_or); /* XXX */ 2284 } /* XXX */ 2285 /* XXX XXX END XXX XXX */ 2286 2287 struct mchkinfo * 2288 cpu_mchkinfo() 2289 { 2290 if (mchkinfo_all_cpus == NULL) 2291 return &startup_info; 2292 return mchkinfo_all_cpus + alpha_pal_whami(); 2293 } 2294
Indexes created Fri Oct 03 02:09:57 GMT 2025