machdep.c revision 1.133
1 /* $NetBSD: machdep.c,v 1.133 1998/07/05 22:48:05 jonathan Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center and by Chris G. Demetriou. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /* 41 * Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University. 42 * All rights reserved. 43 * 44 * Author: Chris G. Demetriou 45 * 46 * Permission to use, copy, modify and distribute this software and 47 * its documentation is hereby granted, provided that both the copyright 48 * notice and this permission notice appear in all copies of the 49 * software, derivative works or modified versions, and any portions 50 * thereof, and that both notices appear in supporting documentation. 51 * 52 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 53 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 54 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 55 * 56 * Carnegie Mellon requests users of this software to return to 57 * 58 * Software Distribution Coordinator or Software.Distribution (at) CS.CMU.EDU 59 * School of Computer Science 60 * Carnegie Mellon University 61 * Pittsburgh PA 15213-3890 62 * 63 * any improvements or extensions that they make and grant Carnegie the 64 * rights to redistribute these changes. 65 */ 66 67 #include "opt_ddb.h" 68 #include "opt_uvm.h" 69 #include "opt_pmap_new.h" 70 #include "opt_dec_3000_300.h" 71 #include "opt_dec_3000_500.h" 72 #include "opt_compat_osf1.h" 73 #include "opt_inet.h" 74 #include "opt_atalk.h" 75 #include "opt_ccitt.h" 76 #include "opt_iso.h" 77 #include "opt_ns.h" 78 #include "opt_natm.h" 79 80 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 81 82 __KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.133 1998/07/05 22:48:05 jonathan Exp $"); 83 84 #include <sys/param.h> 85 #include <sys/systm.h> 86 #include <sys/signalvar.h> 87 #include <sys/kernel.h> 88 #include <sys/map.h> 89 #include <sys/proc.h> 90 #include <sys/buf.h> 91 #include <sys/reboot.h> 92 #include <sys/device.h> 93 #include <sys/file.h> 94 #ifdef REAL_CLISTS 95 #include <sys/clist.h> 96 #endif 97 #include <sys/callout.h> 98 #include <sys/malloc.h> 99 #include <sys/mbuf.h> 100 #include <sys/mman.h> 101 #include <sys/msgbuf.h> 102 #include <sys/ioctl.h> 103 #include <sys/tty.h> 104 #include <sys/user.h> 105 #include <sys/exec.h> 106 #include <sys/exec_ecoff.h> 107 #include <vm/vm.h> 108 #include <sys/sysctl.h> 109 #include <sys/core.h> 110 #include <sys/kcore.h> 111 #include <machine/kcore.h> 112 #ifdef SYSVMSG 113 #include <sys/msg.h> 114 #endif 115 #ifdef SYSVSEM 116 #include <sys/sem.h> 117 #endif 118 #ifdef SYSVSHM 119 #include <sys/shm.h> 120 #endif 121 122 #include <sys/mount.h> 123 #include <sys/syscallargs.h> 124 125 #include <vm/vm_kern.h> 126 127 #if defined(UVM) 128 #include <uvm/uvm_extern.h> 129 #endif 130 131 #include <dev/cons.h> 132 133 #include <machine/autoconf.h> 134 #include <machine/cpu.h> 135 #include <machine/reg.h> 136 #include <machine/rpb.h> 137 #include <machine/prom.h> 138 #include <machine/conf.h> 139 140 #include <net/netisr.h> 141 #include <net/if.h> 142 143 #ifdef INET 144 #include <net/route.h> 145 #include <netinet/in.h> 146 #include <netinet/ip_var.h> 147 #include "arp.h" 148 #if NARP > 0 149 #include <netinet/if_inarp.h> 150 #endif 151 #endif 152 #ifdef NS 153 #include <netns/ns_var.h> 154 #endif 155 #ifdef ISO 156 #include <netiso/iso.h> 157 #include <netiso/clnp.h> 158 #endif 159 #ifdef CCITT 160 #include <netccitt/x25.h> 161 #include <netccitt/pk.h> 162 #include <netccitt/pk_extern.h> 163 #endif 164 #ifdef NATM 165 #include <netnatm/natm.h> 166 #endif 167 #ifdef NETATALK 168 #include <netatalk/at_extern.h> 169 #endif 170 #include "ppp.h" 171 #if NPPP > 0 172 #include <net/ppp_defs.h> 173 #include <net/if_ppp.h> 174 #endif 175 176 #ifdef DDB 177 #include <machine/db_machdep.h> 178 #include <ddb/db_access.h> 179 #include <ddb/db_sym.h> 180 #include <ddb/db_extern.h> 181 #include <ddb/db_interface.h> 182 #endif 183 184 #if defined(UVM) 185 vm_map_t exec_map = NULL; 186 vm_map_t mb_map = NULL; 187 vm_map_t phys_map = NULL; 188 #else 189 vm_map_t buffer_map; 190 #endif 191 192 /* 193 * Declare these as initialized data so we can patch them. 194 */ 195 int nswbuf = 0; 196 #ifdef NBUF 197 int nbuf = NBUF; 198 #else 199 int nbuf = 0; 200 #endif 201 #ifdef BUFPAGES 202 int bufpages = BUFPAGES; 203 #else 204 int bufpages = 0; 205 #endif 206 caddr_t msgbufaddr; 207 208 int maxmem; /* max memory per process */ 209 210 int totalphysmem; /* total amount of physical memory in system */ 211 int physmem; /* physical memory used by NetBSD + some rsvd */ 212 int resvmem; /* amount of memory reserved for PROM */ 213 int unusedmem; /* amount of memory for OS that we don't use */ 214 int unknownmem; /* amount of memory with an unknown use */ 215 216 int cputype; /* system type, from the RPB */ 217 218 /* 219 * XXX We need an address to which we can assign things so that they 220 * won't be optimized away because we didn't use the value. 221 */ 222 u_int32_t no_optimize; 223 224 /* the following is used externally (sysctl_hw) */ 225 char machine[] = MACHINE; /* from <machine/param.h> */ 226 char machine_arch[] = MACHINE_ARCH; /* from <machine/param.h> */ 227 char cpu_model[128]; 228 229 struct user *proc0paddr; 230 231 /* Number of machine cycles per microsecond */ 232 u_int64_t cycles_per_usec; 233 234 /* number of cpus in the box. really! */ 235 int ncpus; 236 237 struct bootinfo_kernel bootinfo; 238 239 /* For built-in TCDS */ 240 #if defined(DEC_3000_300) || defined(DEC_3000_500) 241 u_int8_t dec_3000_scsiid[2], dec_3000_scsifast[2]; 242 #endif 243 244 struct platform platform; 245 246 u_int32_t vm_mbuf_size = _VM_MBUF_SIZE; 247 u_int32_t vm_kmem_size = _VM_KMEM_SIZE; 248 u_int32_t vm_phys_size = _VM_PHYS_SIZE; 249 250 #ifdef DDB 251 /* start and end of kernel symbol table */ 252 void *ksym_start, *ksym_end; 253 #endif 254 255 /* for cpu_sysctl() */ 256 int alpha_unaligned_print = 1; /* warn about unaligned accesses */ 257 int alpha_unaligned_fix = 1; /* fix up unaligned accesses */ 258 int alpha_unaligned_sigbus = 0; /* don't SIGBUS on fixed-up accesses */ 259 260 /* 261 * XXX This should be dynamically sized, but we have the chicken-egg problem! 262 * XXX it should also be larger than it is, because not all of the mddt 263 * XXX clusters end up being used for VM. 264 */ 265 phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX]; /* low size bits overloaded */ 266 int mem_cluster_cnt; 267 268 caddr_t allocsys __P((caddr_t)); 269 int cpu_dump __P((void)); 270 int cpu_dumpsize __P((void)); 271 u_long cpu_dump_mempagecnt __P((void)); 272 void dumpsys __P((void)); 273 void identifycpu __P((void)); 274 void netintr __P((void)); 275 void printregs __P((struct reg *)); 276 277 void 278 alpha_init(pfn, ptb, bim, bip, biv) 279 u_long pfn; /* first free PFN number */ 280 u_long ptb; /* PFN of current level 1 page table */ 281 u_long bim; /* bootinfo magic */ 282 u_long bip; /* bootinfo pointer */ 283 u_long biv; /* bootinfo version */ 284 { 285 extern char kernel_text[], _end[]; 286 struct mddt *mddtp; 287 struct mddt_cluster *memc; 288 int i, mddtweird; 289 struct vm_physseg *vps; 290 vm_offset_t kernstart, kernend; 291 vm_offset_t kernstartpfn, kernendpfn, pfn0, pfn1; 292 vm_size_t size; 293 char *p; 294 caddr_t v; 295 char *bootinfo_msg; 296 297 /* NO OUTPUT ALLOWED UNTIL FURTHER NOTICE */ 298 299 /* 300 * Turn off interrupts (not mchecks) and floating point. 301 * Make sure the instruction and data streams are consistent. 302 */ 303 (void)alpha_pal_swpipl(ALPHA_PSL_IPL_HIGH); 304 alpha_pal_wrfen(0); 305 ALPHA_TBIA(); 306 alpha_pal_imb(); 307 308 /* 309 * Get critical system information (if possible, from the 310 * information provided by the boot program). 311 */ 312 bootinfo_msg = NULL; 313 if (bim == BOOTINFO_MAGIC) { 314 if (biv == 0) { /* backward compat */ 315 biv = *(u_long *)bip; 316 bip += 8; 317 } 318 switch (biv) { 319 case 1: { 320 struct bootinfo_v1 *v1p = (struct bootinfo_v1 *)bip; 321 322 bootinfo.ssym = v1p->ssym; 323 bootinfo.esym = v1p->esym; 324 /* hwrpb may not be provided by boot block in v1 */ 325 if (v1p->hwrpb != NULL) { 326 bootinfo.hwrpb_phys = 327 ((struct rpb *)v1p->hwrpb)->rpb_phys; 328 bootinfo.hwrpb_size = v1p->hwrpbsize; 329 } else { 330 bootinfo.hwrpb_phys = 331 ((struct rpb *)HWRPB_ADDR)->rpb_phys; 332 bootinfo.hwrpb_size = 333 ((struct rpb *)HWRPB_ADDR)->rpb_size; 334 } 335 bcopy(v1p->boot_flags, bootinfo.boot_flags, 336 min(sizeof v1p->boot_flags, 337 sizeof bootinfo.boot_flags)); 338 bcopy(v1p->booted_kernel, bootinfo.booted_kernel, 339 min(sizeof v1p->booted_kernel, 340 sizeof bootinfo.booted_kernel)); 341 /* booted dev not provided in bootinfo */ 342 init_prom_interface((struct rpb *) 343 ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys)); 344 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 345 sizeof bootinfo.booted_dev); 346 break; 347 } 348 default: 349 bootinfo_msg = "unknown bootinfo version"; 350 goto nobootinfo; 351 } 352 } else { 353 bootinfo_msg = "boot program did not pass bootinfo"; 354 nobootinfo: 355 bootinfo.ssym = (u_long)_end; 356 bootinfo.esym = (u_long)_end; 357 bootinfo.hwrpb_phys = ((struct rpb *)HWRPB_ADDR)->rpb_phys; 358 bootinfo.hwrpb_size = ((struct rpb *)HWRPB_ADDR)->rpb_size; 359 init_prom_interface((struct rpb *)HWRPB_ADDR); 360 prom_getenv(PROM_E_BOOTED_OSFLAGS, bootinfo.boot_flags, 361 sizeof bootinfo.boot_flags); 362 prom_getenv(PROM_E_BOOTED_FILE, bootinfo.booted_kernel, 363 sizeof bootinfo.booted_kernel); 364 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 365 sizeof bootinfo.booted_dev); 366 } 367 368 /* 369 * Initialize the kernel's mapping of the RPB. It's needed for 370 * lots of things. 371 */ 372 hwrpb = (struct rpb *)ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys); 373 374 #if defined(DEC_3000_300) || defined(DEC_3000_500) 375 if (hwrpb->rpb_type == ST_DEC_3000_300 || 376 hwrpb->rpb_type == ST_DEC_3000_500) { 377 prom_getenv(PROM_E_SCSIID, dec_3000_scsiid, 378 sizeof(dec_3000_scsiid)); 379 prom_getenv(PROM_E_SCSIFAST, dec_3000_scsifast, 380 sizeof(dec_3000_scsifast)); 381 } 382 #endif 383 384 /* 385 * Remember how many cycles there are per microsecond, 386 * so that we can use delay(). Round up, for safety. 387 */ 388 cycles_per_usec = (hwrpb->rpb_cc_freq + 999999) / 1000000; 389 390 /* 391 * Initalize the (temporary) bootstrap console interface, so 392 * we can use printf until the VM system starts being setup. 393 * The real console is initialized before then. 394 */ 395 init_bootstrap_console(); 396 397 /* OUTPUT NOW ALLOWED */ 398 399 /* delayed from above */ 400 if (bootinfo_msg) 401 printf("WARNING: %s (0x%lx, 0x%lx, 0x%lx)\n", 402 bootinfo_msg, bim, bip, biv); 403 404 /* 405 * Point interrupt/exception vectors to our own. 406 */ 407 alpha_pal_wrent(XentInt, ALPHA_KENTRY_INT); 408 alpha_pal_wrent(XentArith, ALPHA_KENTRY_ARITH); 409 alpha_pal_wrent(XentMM, ALPHA_KENTRY_MM); 410 alpha_pal_wrent(XentIF, ALPHA_KENTRY_IF); 411 alpha_pal_wrent(XentUna, ALPHA_KENTRY_UNA); 412 alpha_pal_wrent(XentSys, ALPHA_KENTRY_SYS); 413 414 /* 415 * Clear pending machine checks and error reports, and enable 416 * system- and processor-correctable error reporting. 417 */ 418 alpha_pal_wrmces(alpha_pal_rdmces() & 419 ~(ALPHA_MCES_DSC|ALPHA_MCES_DPC)); 420 421 /* 422 * Find out what hardware we're on, and do basic initialization. 423 */ 424 cputype = hwrpb->rpb_type; 425 if (cputype >= ncpuinit) { 426 platform_not_supported(); 427 /* NOTREACHED */ 428 } 429 (*cpuinit[cputype].init)(); 430 strcpy(cpu_model, platform.model); 431 432 /* 433 * Initalize the real console, so the the bootstrap console is 434 * no longer necessary. 435 */ 436 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 437 if (!pmap_uses_prom_console()) 438 #endif 439 (*platform.cons_init)(); 440 441 #ifdef DIAGNOSTIC 442 /* Paranoid sanity checking */ 443 444 /* We should always be running on the the primary. */ 445 assert(hwrpb->rpb_primary_cpu_id == alpha_pal_whami()); 446 447 /* 448 * On single-CPU systypes, the primary should always be CPU 0, 449 * except on Alpha 8200 systems where the CPU id is related 450 * to the VID, which is related to the Turbo Laser node id. 451 */ 452 if (cputype != ST_DEC_21000) 453 assert(hwrpb->rpb_primary_cpu_id == 0); 454 #endif 455 456 /* NO MORE FIRMWARE ACCESS ALLOWED */ 457 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 458 /* 459 * XXX (unless _PMAP_MAY_USE_PROM_CONSOLE is defined and 460 * XXX pmap_uses_prom_console() evaluates to non-zero.) 461 */ 462 #endif 463 464 /* 465 * find out this system's page size 466 */ 467 PAGE_SIZE = hwrpb->rpb_page_size; 468 if (PAGE_SIZE != 8192) 469 panic("page size %d != 8192?!", PAGE_SIZE); 470 471 /* 472 * Initialize PAGE_SIZE-dependent variables. 473 */ 474 #if defined(UVM) 475 uvm_setpagesize(); 476 #else 477 vm_set_page_size(); 478 #endif 479 480 /* 481 * Find the beginning and end of the kernel (and leave a 482 * bit of space before the beginning for the bootstrap 483 * stack). 484 */ 485 kernstart = trunc_page(kernel_text) - 2 * PAGE_SIZE; 486 #ifdef DDB 487 ksym_start = (void *)bootinfo.ssym; 488 ksym_end = (void *)bootinfo.esym; 489 kernend = (vm_offset_t)round_page(ksym_end); 490 #else 491 kernend = (vm_offset_t)round_page(_end); 492 #endif 493 494 kernstartpfn = atop(ALPHA_K0SEG_TO_PHYS(kernstart)); 495 kernendpfn = atop(ALPHA_K0SEG_TO_PHYS(kernend)); 496 497 /* 498 * Find out how much memory is available, by looking at 499 * the memory cluster descriptors. This also tries to do 500 * its best to detect things things that have never been seen 501 * before... 502 */ 503 mddtp = (struct mddt *)(((caddr_t)hwrpb) + hwrpb->rpb_memdat_off); 504 505 /* MDDT SANITY CHECKING */ 506 mddtweird = 0; 507 if (mddtp->mddt_cluster_cnt < 2) { 508 mddtweird = 1; 509 printf("WARNING: weird number of mem clusters: %d\n", 510 mddtp->mddt_cluster_cnt); 511 } 512 513 #if 0 514 printf("Memory cluster count: %d\n", mddtp->mddt_cluster_cnt); 515 #endif 516 517 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 518 memc = &mddtp->mddt_clusters[i]; 519 #if 0 520 printf("MEMC %d: pfn 0x%lx cnt 0x%lx usage 0x%lx\n", i, 521 memc->mddt_pfn, memc->mddt_pg_cnt, memc->mddt_usage); 522 #endif 523 totalphysmem += memc->mddt_pg_cnt; 524 if (mem_cluster_cnt < VM_PHYSSEG_MAX) { /* XXX */ 525 mem_clusters[mem_cluster_cnt].start = 526 ptoa(memc->mddt_pfn); 527 mem_clusters[mem_cluster_cnt].size = 528 ptoa(memc->mddt_pg_cnt); 529 if (memc->mddt_usage & MDDT_mbz || 530 memc->mddt_usage & MDDT_NONVOLATILE || /* XXX */ 531 memc->mddt_usage & MDDT_PALCODE) 532 mem_clusters[mem_cluster_cnt].size |= 533 PROT_READ; 534 else 535 mem_clusters[mem_cluster_cnt].size |= 536 PROT_READ | PROT_WRITE | PROT_EXEC; 537 mem_cluster_cnt++; 538 } 539 540 if (memc->mddt_usage & MDDT_mbz) { 541 mddtweird = 1; 542 printf("WARNING: mem cluster %d has weird " 543 "usage 0x%lx\n", i, memc->mddt_usage); 544 unknownmem += memc->mddt_pg_cnt; 545 continue; 546 } 547 if (memc->mddt_usage & MDDT_NONVOLATILE) { 548 /* XXX should handle these... */ 549 printf("WARNING: skipping non-volatile mem " 550 "cluster %d\n", i); 551 unusedmem += memc->mddt_pg_cnt; 552 continue; 553 } 554 if (memc->mddt_usage & MDDT_PALCODE) { 555 resvmem += memc->mddt_pg_cnt; 556 continue; 557 } 558 559 /* 560 * We have a memory cluster available for system 561 * software use. We must determine if this cluster 562 * holds the kernel. 563 */ 564 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 565 /* 566 * XXX If the kernel uses the PROM console, we only use the 567 * XXX memory after the kernel in the first system segment, 568 * XXX to avoid clobbering prom mapping, data, etc. 569 */ 570 if (!pmap_uses_prom_console() || physmem == 0) { 571 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 572 physmem += memc->mddt_pg_cnt; 573 pfn0 = memc->mddt_pfn; 574 pfn1 = memc->mddt_pfn + memc->mddt_pg_cnt; 575 if (pfn0 <= kernstartpfn && kernendpfn <= pfn1) { 576 /* 577 * Must compute the location of the kernel 578 * within the segment. 579 */ 580 #if 0 581 printf("Cluster %d contains kernel\n", i); 582 #endif 583 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 584 if (!pmap_uses_prom_console()) { 585 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 586 if (pfn0 < kernstartpfn) { 587 /* 588 * There is a chunk before the kernel. 589 */ 590 #if 0 591 printf("Loading chunk before kernel: " 592 "0x%lx / 0x%lx\n", pfn0, kernstartpfn); 593 #endif 594 #if defined(UVM) 595 uvm_page_physload(pfn0, kernstartpfn, 596 pfn0, kernstartpfn); 597 #else 598 vm_page_physload(pfn0, kernstartpfn, 599 pfn0, kernstartpfn); 600 #endif 601 } 602 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 603 } 604 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 605 if (kernendpfn < pfn1) { 606 /* 607 * There is a chunk after the kernel. 608 */ 609 #if 0 610 printf("Loading chunk after kernel: " 611 "0x%lx / 0x%lx\n", kernendpfn, pfn1); 612 #endif 613 #if defined(UVM) 614 uvm_page_physload(kernendpfn, pfn1, 615 kernendpfn, pfn1); 616 #else 617 vm_page_physload(kernendpfn, pfn1, 618 kernendpfn, pfn1); 619 #endif 620 } 621 } else { 622 /* 623 * Just load this cluster as one chunk. 624 */ 625 #if 0 626 printf("Loading cluster %d: 0x%lx / 0x%lx\n", i, 627 pfn0, pfn1); 628 #endif 629 #if defined(UVM) 630 uvm_page_physload(pfn0, pfn1, pfn0, pfn1); 631 #else 632 vm_page_physload(pfn0, pfn1, pfn0, pfn1); 633 #endif 634 } 635 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 636 } 637 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 638 } 639 640 /* 641 * Dump out the MDDT if it looks odd... 642 */ 643 if (mddtweird) { 644 printf("\n"); 645 printf("complete memory cluster information:\n"); 646 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 647 printf("mddt %d:\n", i); 648 printf("\tpfn %lx\n", 649 mddtp->mddt_clusters[i].mddt_pfn); 650 printf("\tcnt %lx\n", 651 mddtp->mddt_clusters[i].mddt_pg_cnt); 652 printf("\ttest %lx\n", 653 mddtp->mddt_clusters[i].mddt_pg_test); 654 printf("\tbva %lx\n", 655 mddtp->mddt_clusters[i].mddt_v_bitaddr); 656 printf("\tbpa %lx\n", 657 mddtp->mddt_clusters[i].mddt_p_bitaddr); 658 printf("\tbcksum %lx\n", 659 mddtp->mddt_clusters[i].mddt_bit_cksum); 660 printf("\tusage %lx\n", 661 mddtp->mddt_clusters[i].mddt_usage); 662 } 663 printf("\n"); 664 } 665 666 if (totalphysmem == 0) 667 panic("can't happen: system seems to have no memory!"); 668 669 #ifdef LIMITMEM 670 /* 671 * XXX Kludge so we can run on machines with memory larger 672 * XXX than 1G until all device drivers are converted to 673 * XXX use bus_dma. (Relies on the fact that vm_physmem 674 * XXX sorted in order of increasing addresses.) 675 */ 676 if (vm_physmem[vm_nphysseg - 1].end > atop(LIMITMEM * 1024 * 1024)) { 677 678 printf("******** LIMITING MEMORY TO %dMB **********\n", 679 LIMITMEM); 680 681 do { 682 u_long ovf; 683 684 vps = &vm_physmem[vm_nphysseg - 1]; 685 686 if (vps->start >= atop(LIMITMEM * 1024 * 1024)) { 687 /* 688 * If the start is too high, just drop 689 * the whole segment. 690 * 691 * XXX can start != avail_start in this 692 * XXX case? wouldn't that mean that 693 * XXX some memory was stolen above the 694 * XXX limit? What to do? 695 */ 696 ovf = vps->end - vps->start; 697 vm_nphysseg--; 698 } else { 699 /* 700 * If the start is OK, calculate how much 701 * to drop and drop it. 702 */ 703 ovf = vps->end - atop(LIMITMEM * 1024 * 1024); 704 vps->end -= ovf; 705 vps->avail_end -= ovf; 706 } 707 physmem -= ovf; 708 unusedmem += ovf; 709 } while (vps->end > atop(LIMITMEM * 1024 * 1024)); 710 } 711 #endif /* LIMITMEM */ 712 713 maxmem = physmem; 714 715 #if 0 716 printf("totalphysmem = %d\n", totalphysmem); 717 printf("physmem = %d\n", physmem); 718 printf("resvmem = %d\n", resvmem); 719 printf("unusedmem = %d\n", unusedmem); 720 printf("unknownmem = %d\n", unknownmem); 721 #endif 722 723 /* 724 * Adjust some parameters if the amount of physmem 725 * available would cause us to croak. This is completely 726 * eyeballed and isn't meant to be the final answer. 727 * vm_phys_size is probably the only one to really worry 728 * about. 729 * 730 * It's for booting a GENERIC kernel on a large memory platform. 731 */ 732 if (physmem >= atop(128 * 1024 * 1024)) { 733 vm_mbuf_size <<= 1; 734 vm_kmem_size <<= 3; 735 vm_phys_size <<= 2; 736 } 737 738 /* 739 * Initialize error message buffer (at end of core). 740 */ 741 { 742 size_t sz = round_page(MSGBUFSIZE); 743 744 vps = &vm_physmem[vm_nphysseg - 1]; 745 746 /* shrink so that it'll fit in the last segment */ 747 if ((vps->avail_end - vps->avail_start) < atop(sz)) 748 sz = ptoa(vps->avail_end - vps->avail_start); 749 750 vps->end -= atop(sz); 751 vps->avail_end -= atop(sz); 752 msgbufaddr = (caddr_t) ALPHA_PHYS_TO_K0SEG(ptoa(vps->end)); 753 initmsgbuf(msgbufaddr, sz); 754 755 /* Remove the last segment if it now has no pages. */ 756 if (vps->start == vps->end) 757 vm_nphysseg--; 758 759 /* warn if the message buffer had to be shrunk */ 760 if (sz != round_page(MSGBUFSIZE)) 761 printf("WARNING: %d bytes not available for msgbuf in last cluster (%d used)\n", 762 round_page(MSGBUFSIZE), sz); 763 764 } 765 766 /* 767 * Init mapping for u page(s) for proc 0 768 */ 769 proc0.p_addr = proc0paddr = 770 (struct user *)pmap_steal_memory(UPAGES * PAGE_SIZE, NULL, NULL); 771 772 /* 773 * Allocate space for system data structures. These data structures 774 * are allocated here instead of cpu_startup() because physical 775 * memory is directly addressable. We don't have to map these into 776 * virtual address space. 777 */ 778 size = (vm_size_t)allocsys(0); 779 v = (caddr_t)pmap_steal_memory(size, NULL, NULL); 780 if ((allocsys(v) - v) != size) 781 panic("alpha_init: table size inconsistency"); 782 783 /* 784 * Initialize the virtual memory system, and set the 785 * page table base register in proc 0's PCB. 786 */ 787 pmap_bootstrap(ALPHA_PHYS_TO_K0SEG(ptb << PGSHIFT), 788 hwrpb->rpb_max_asn); 789 790 /* 791 * Initialize the rest of proc 0's PCB, and cache its physical 792 * address. 793 */ 794 proc0.p_md.md_pcbpaddr = 795 (struct pcb *)ALPHA_K0SEG_TO_PHYS((vm_offset_t)&proc0paddr->u_pcb); 796 797 /* 798 * Set the kernel sp, reserving space for an (empty) trapframe, 799 * and make proc0's trapframe pointer point to it for sanity. 800 */ 801 proc0paddr->u_pcb.pcb_hw.apcb_ksp = 802 (u_int64_t)proc0paddr + USPACE - sizeof(struct trapframe); 803 proc0.p_md.md_tf = 804 (struct trapframe *)proc0paddr->u_pcb.pcb_hw.apcb_ksp; 805 806 /* 807 * Look at arguments passed to us and compute boothowto. 808 */ 809 810 boothowto = RB_SINGLE; 811 #ifdef KADB 812 boothowto |= RB_KDB; 813 #endif 814 for (p = bootinfo.boot_flags; p && *p != '\0'; p++) { 815 /* 816 * Note that we'd really like to differentiate case here, 817 * but the Alpha AXP Architecture Reference Manual 818 * says that we shouldn't. 819 */ 820 switch (*p) { 821 case 'a': /* autoboot */ 822 case 'A': 823 boothowto &= ~RB_SINGLE; 824 break; 825 826 #ifdef DEBUG 827 case 'c': /* crash dump immediately after autoconfig */ 828 case 'C': 829 boothowto |= RB_DUMP; 830 break; 831 #endif 832 833 #if defined(KGDB) || defined(DDB) 834 case 'd': /* break into the kernel debugger ASAP */ 835 case 'D': 836 boothowto |= RB_KDB; 837 break; 838 #endif 839 840 case 'h': /* always halt, never reboot */ 841 case 'H': 842 boothowto |= RB_HALT; 843 break; 844 845 #if 0 846 case 'm': /* mini root present in memory */ 847 case 'M': 848 boothowto |= RB_MINIROOT; 849 break; 850 #endif 851 852 case 'n': /* askname */ 853 case 'N': 854 boothowto |= RB_ASKNAME; 855 break; 856 857 case 's': /* single-user (default, supported for sanity) */ 858 case 'S': 859 boothowto |= RB_SINGLE; 860 break; 861 862 case '-': 863 /* 864 * Just ignore this. It's not required, but it's 865 * common for it to be passed regardless. 866 */ 867 break; 868 869 default: 870 printf("Unrecognized boot flag '%c'.\n", *p); 871 break; 872 } 873 } 874 875 /* 876 * Initialize debuggers, and break into them if appropriate. 877 */ 878 #ifdef DDB 879 db_machine_init(); 880 ddb_init(ksym_start, ksym_end); 881 if (boothowto & RB_KDB) 882 Debugger(); 883 #endif 884 #ifdef KGDB 885 if (boothowto & RB_KDB) 886 kgdb_connect(0); 887 #endif 888 889 /* 890 * Figure out the number of cpus in the box, from RPB fields. 891 * Really. We mean it. 892 */ 893 for (i = 0; i < hwrpb->rpb_pcs_cnt; i++) { 894 struct pcs *pcsp; 895 896 pcsp = LOCATE_PCS(hwrpb, i); 897 if ((pcsp->pcs_flags & PCS_PP) != 0) 898 ncpus++; 899 } 900 901 /* 902 * Figure out our clock frequency, from RPB fields. 903 */ 904 hz = hwrpb->rpb_intr_freq >> 12; 905 if (!(60 <= hz && hz <= 10240)) { 906 hz = 1024; 907 #ifdef DIAGNOSTIC 908 printf("WARNING: unbelievable rpb_intr_freq: %ld (%d hz)\n", 909 hwrpb->rpb_intr_freq, hz); 910 #endif 911 } 912 913 } 914 915 /* 916 * Allocate space for system data structures. We are given 917 * a starting virtual address and we return a final virtual 918 * address; along the way we set each data structure pointer. 919 * 920 * We call allocsys() with 0 to find out how much space we want, 921 * allocate that much and fill it with zeroes, and the call 922 * allocsys() again with the correct base virtual address. 923 */ 924 caddr_t 925 allocsys(v) 926 caddr_t v; 927 { 928 929 #define valloc(name, type, num) \ 930 (name) = (type *)v; v = (caddr_t)ALIGN((name)+(num)) 931 #ifdef REAL_CLISTS 932 valloc(cfree, struct cblock, nclist); 933 #endif 934 valloc(callout, struct callout, ncallout); 935 #ifdef SYSVSHM 936 valloc(shmsegs, struct shmid_ds, shminfo.shmmni); 937 #endif 938 #ifdef SYSVSEM 939 valloc(sema, struct semid_ds, seminfo.semmni); 940 valloc(sem, struct sem, seminfo.semmns); 941 /* This is pretty disgusting! */ 942 valloc(semu, int, (seminfo.semmnu * seminfo.semusz) / sizeof(int)); 943 #endif 944 #ifdef SYSVMSG 945 valloc(msgpool, char, msginfo.msgmax); 946 valloc(msgmaps, struct msgmap, msginfo.msgseg); 947 valloc(msghdrs, struct msg, msginfo.msgtql); 948 valloc(msqids, struct msqid_ds, msginfo.msgmni); 949 #endif 950 951 /* 952 * Determine how many buffers to allocate. 953 * We allocate 10% of memory for buffer space. Insure a 954 * minimum of 16 buffers. We allocate 1/2 as many swap buffer 955 * headers as file i/o buffers. 956 */ 957 if (bufpages == 0) 958 bufpages = (physmem * 10) / (CLSIZE * 100); 959 if (nbuf == 0) { 960 nbuf = bufpages; 961 if (nbuf < 16) 962 nbuf = 16; 963 } 964 if (nswbuf == 0) { 965 nswbuf = (nbuf / 2) &~ 1; /* force even */ 966 if (nswbuf > 256) 967 nswbuf = 256; /* sanity */ 968 } 969 #if !defined(UVM) 970 valloc(swbuf, struct buf, nswbuf); 971 #endif 972 valloc(buf, struct buf, nbuf); 973 return (v); 974 #undef valloc 975 } 976 977 void 978 consinit() 979 { 980 981 /* 982 * Everything related to console initialization is done 983 * in alpha_init(). 984 */ 985 #if defined(DIAGNOSTIC) && defined(_PMAP_MAY_USE_PROM_CONSOLE) 986 printf("consinit: %susing prom console\n", 987 pmap_uses_prom_console() ? "" : "not "); 988 #endif 989 } 990 991 #include "pckbc.h" 992 #include "pckbd.h" 993 #if (NPCKBC > 0) && (NPCKBD == 0) 994 995 #include <machine/bus.h> 996 #include <dev/isa/pckbcvar.h> 997 998 /* 999 * This is called by the pbkbc driver if no pckbd is configured. 1000 * On the i386, it is used to glue in the old, deprecated console 1001 * code. On the Alpha, it does nothing. 1002 */ 1003 int 1004 pckbc_machdep_cnattach(kbctag, kbcslot) 1005 pckbc_tag_t kbctag; 1006 pckbc_slot_t kbcslot; 1007 { 1008 1009 return (ENXIO); 1010 } 1011 #endif /* NPCKBC > 0 && NPCKBD == 0 */ 1012 1013 void 1014 cpu_startup() 1015 { 1016 register unsigned i; 1017 int base, residual; 1018 vm_offset_t minaddr, maxaddr; 1019 vm_size_t size; 1020 #if defined(DEBUG) 1021 extern int pmapdebug; 1022 int opmapdebug = pmapdebug; 1023 1024 pmapdebug = 0; 1025 #endif 1026 1027 /* 1028 * Good {morning,afternoon,evening,night}. 1029 */ 1030 printf(version); 1031 identifycpu(); 1032 printf("real mem = %lu (%lu reserved for PROM, %lu used by NetBSD)\n", 1033 ptoa(totalphysmem), ptoa(resvmem), ptoa(physmem)); 1034 if (unusedmem) 1035 printf("WARNING: unused memory = %d bytes\n", ctob(unusedmem)); 1036 if (unknownmem) 1037 printf("WARNING: %d bytes of memory with unknown purpose\n", 1038 ctob(unknownmem)); 1039 1040 /* 1041 * Allocate virtual address space for file I/O buffers. 1042 * Note they are different than the array of headers, 'buf', 1043 * and usually occupy more virtual memory than physical. 1044 */ 1045 size = MAXBSIZE * nbuf; 1046 #if defined(UVM) 1047 if (uvm_map(kernel_map, (vm_offset_t *) &buffers, round_page(size), 1048 NULL, UVM_UNKNOWN_OFFSET, 1049 UVM_MAPFLAG(UVM_PROT_NONE, UVM_PROT_NONE, UVM_INH_NONE, 1050 UVM_ADV_NORMAL, 0)) != KERN_SUCCESS) 1051 panic("startup: cannot allocate VM for buffers"); 1052 #else 1053 buffer_map = kmem_suballoc(kernel_map, (vm_offset_t *)&buffers, 1054 &maxaddr, size, TRUE); 1055 minaddr = (vm_offset_t)buffers; 1056 if (vm_map_find(buffer_map, vm_object_allocate(size), (vm_offset_t)0, 1057 &minaddr, size, FALSE) != KERN_SUCCESS) 1058 panic("startup: cannot allocate buffers"); 1059 #endif /* UVM */ 1060 base = bufpages / nbuf; 1061 residual = bufpages % nbuf; 1062 for (i = 0; i < nbuf; i++) { 1063 #if defined(UVM) 1064 vm_size_t curbufsize; 1065 vm_offset_t curbuf; 1066 struct vm_page *pg; 1067 1068 /* 1069 * Each buffer has MAXBSIZE bytes of VM space allocated. Of 1070 * that MAXBSIZE space, we allocate and map (base+1) pages 1071 * for the first "residual" buffers, and then we allocate 1072 * "base" pages for the rest. 1073 */ 1074 curbuf = (vm_offset_t) buffers + (i * MAXBSIZE); 1075 curbufsize = CLBYTES * ((i < residual) ? (base+1) : base); 1076 1077 while (curbufsize) { 1078 pg = uvm_pagealloc(NULL, 0, NULL); 1079 if (pg == NULL) 1080 panic("cpu_startup: not enough memory for " 1081 "buffer cache"); 1082 #if defined(PMAP_NEW) 1083 pmap_kenter_pgs(curbuf, &pg, 1); 1084 #else 1085 pmap_enter(kernel_map->pmap, curbuf, 1086 VM_PAGE_TO_PHYS(pg), VM_PROT_ALL, TRUE); 1087 #endif 1088 curbuf += PAGE_SIZE; 1089 curbufsize -= PAGE_SIZE; 1090 } 1091 #else /* ! UVM */ 1092 vm_size_t curbufsize; 1093 vm_offset_t curbuf; 1094 1095 /* 1096 * First <residual> buffers get (base+1) physical pages 1097 * allocated for them. The rest get (base) physical pages. 1098 * 1099 * The rest of each buffer occupies virtual space, 1100 * but has no physical memory allocated for it. 1101 */ 1102 curbuf = (vm_offset_t)buffers + i * MAXBSIZE; 1103 curbufsize = CLBYTES * (i < residual ? base+1 : base); 1104 vm_map_pageable(buffer_map, curbuf, curbuf+curbufsize, FALSE); 1105 vm_map_simplify(buffer_map, curbuf); 1106 #endif /* UVM */ 1107 } 1108 /* 1109 * Allocate a submap for exec arguments. This map effectively 1110 * limits the number of processes exec'ing at any time. 1111 */ 1112 #if defined(UVM) 1113 exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 1114 16 * NCARGS, TRUE, FALSE, NULL); 1115 #else 1116 exec_map = kmem_suballoc(kernel_map, &minaddr, &maxaddr, 1117 16 * NCARGS, TRUE); 1118 #endif 1119 1120 /* 1121 * Allocate a submap for physio 1122 */ 1123 #if defined(UVM) 1124 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 1125 VM_PHYS_SIZE, TRUE, FALSE, NULL); 1126 #else 1127 phys_map = kmem_suballoc(kernel_map, &minaddr, &maxaddr, 1128 VM_PHYS_SIZE, TRUE); 1129 #endif 1130 1131 /* 1132 * Finally, allocate mbuf cluster submap. 1133 */ 1134 #if defined(UVM) 1135 mb_map = uvm_km_suballoc(kernel_map, (vm_offset_t *)&mbutl, &maxaddr, 1136 VM_MBUF_SIZE, FALSE, FALSE, NULL); 1137 #else 1138 mb_map = kmem_suballoc(kernel_map, (vm_offset_t *)&mbutl, &maxaddr, 1139 VM_MBUF_SIZE, FALSE); 1140 #endif 1141 /* 1142 * Initialize callouts 1143 */ 1144 callfree = callout; 1145 for (i = 1; i < ncallout; i++) 1146 callout[i-1].c_next = &callout[i]; 1147 callout[i-1].c_next = NULL; 1148 1149 #if defined(DEBUG) 1150 pmapdebug = opmapdebug; 1151 #endif 1152 #if defined(UVM) 1153 printf("avail mem = %ld\n", (long)ptoa(uvmexp.free)); 1154 #else 1155 printf("avail mem = %ld\n", (long)ptoa(cnt.v_free_count)); 1156 #endif 1157 printf("using %ld buffers containing %ld bytes of memory\n", 1158 (long)nbuf, (long)(bufpages * CLBYTES)); 1159 1160 /* 1161 * Set up buffers, so they can be used to read disk labels. 1162 */ 1163 bufinit(); 1164 1165 /* 1166 * Configure the system. 1167 */ 1168 configure(); 1169 1170 /* 1171 * Note that bootstrapping is finished, and set the HWRPB up 1172 * to do restarts. 1173 */ 1174 hwrpb_restart_setup(); 1175 } 1176 1177 /* 1178 * Retrieve the platform name from the DSR. 1179 */ 1180 const char * 1181 alpha_dsr_sysname() 1182 { 1183 struct dsrdb *dsr; 1184 const char *sysname; 1185 1186 /* 1187 * DSR does not exist on early HWRPB versions. 1188 */ 1189 if (hwrpb->rpb_version < HWRPB_DSRDB_MINVERS) 1190 return (NULL); 1191 1192 dsr = (struct dsrdb *)(((caddr_t)hwrpb) + hwrpb->rpb_dsrdb_off); 1193 sysname = (const char *)((caddr_t)dsr + (dsr->dsr_sysname_off + 1194 sizeof(u_int64_t))); 1195 return (sysname); 1196 } 1197 1198 /* 1199 * Lookup the system specified system variation in the provided table, 1200 * returning the model string on match. 1201 */ 1202 const char * 1203 alpha_variation_name(variation, avtp) 1204 u_int64_t variation; 1205 const struct alpha_variation_table *avtp; 1206 { 1207 int i; 1208 1209 for (i = 0; avtp[i].avt_model != NULL; i++) 1210 if (avtp[i].avt_variation == variation) 1211 return (avtp[i].avt_model); 1212 return (NULL); 1213 } 1214 1215 /* 1216 * Generate a default platform name based for unknown system variations. 1217 */ 1218 const char * 1219 alpha_unknown_sysname() 1220 { 1221 static char s[128]; /* safe size */ 1222 1223 sprintf(s, "%s family, unknown model variation 0x%lx", 1224 platform.family, hwrpb->rpb_variation & SV_ST_MASK); 1225 return ((const char *)s); 1226 } 1227 1228 void 1229 identifycpu() 1230 { 1231 1232 /* 1233 * print out CPU identification information. 1234 */ 1235 printf("%s, %ldMHz\n", cpu_model, 1236 hwrpb->rpb_cc_freq / 1000000); /* XXX true for 21164? */ 1237 printf("%ld byte page size, %d processor%s.\n", 1238 hwrpb->rpb_page_size, ncpus, ncpus == 1 ? "" : "s"); 1239 #if 0 1240 /* this isn't defined for any systems that we run on? */ 1241 printf("serial number 0x%lx 0x%lx\n", 1242 ((long *)hwrpb->rpb_ssn)[0], ((long *)hwrpb->rpb_ssn)[1]); 1243 1244 /* and these aren't particularly useful! */ 1245 printf("variation: 0x%lx, revision 0x%lx\n", 1246 hwrpb->rpb_variation, *(long *)hwrpb->rpb_revision); 1247 #endif 1248 } 1249 1250 int waittime = -1; 1251 struct pcb dumppcb; 1252 1253 void 1254 cpu_reboot(howto, bootstr) 1255 int howto; 1256 char *bootstr; 1257 { 1258 extern int cold; 1259 1260 /* If system is cold, just halt. */ 1261 if (cold) { 1262 howto |= RB_HALT; 1263 goto haltsys; 1264 } 1265 1266 /* If "always halt" was specified as a boot flag, obey. */ 1267 if ((boothowto & RB_HALT) != 0) 1268 howto |= RB_HALT; 1269 1270 boothowto = howto; 1271 if ((howto & RB_NOSYNC) == 0 && waittime < 0) { 1272 waittime = 0; 1273 vfs_shutdown(); 1274 /* 1275 * If we've been adjusting the clock, the todr 1276 * will be out of synch; adjust it now. 1277 */ 1278 resettodr(); 1279 } 1280 1281 /* Disable interrupts. */ 1282 splhigh(); 1283 1284 /* If rebooting and a dump is requested do it. */ 1285 #if 0 1286 if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP) 1287 #else 1288 if (howto & RB_DUMP) 1289 #endif 1290 dumpsys(); 1291 1292 haltsys: 1293 1294 /* run any shutdown hooks */ 1295 doshutdownhooks(); 1296 1297 #ifdef BOOTKEY 1298 printf("hit any key to %s...\n", howto & RB_HALT ? "halt" : "reboot"); 1299 cnpollc(1); /* for proper keyboard command handling */ 1300 cngetc(); 1301 cnpollc(0); 1302 printf("\n"); 1303 #endif 1304 1305 /* Finally, powerdown/halt/reboot the system. */ 1306 if ((howto && RB_POWERDOWN) == RB_POWERDOWN && 1307 platform.powerdown != NULL) { 1308 (*platform.powerdown)(); 1309 printf("WARNING: powerdown failed!\n"); 1310 } 1311 printf("%s\n\n", howto & RB_HALT ? "halted." : "rebooting..."); 1312 prom_halt(howto & RB_HALT); 1313 /*NOTREACHED*/ 1314 } 1315 1316 /* 1317 * These variables are needed by /sbin/savecore 1318 */ 1319 u_long dumpmag = 0x8fca0101; /* magic number */ 1320 int dumpsize = 0; /* pages */ 1321 long dumplo = 0; /* blocks */ 1322 1323 /* 1324 * cpu_dumpsize: calculate size of machine-dependent kernel core dump headers. 1325 */ 1326 int 1327 cpu_dumpsize() 1328 { 1329 int size; 1330 1331 size = ALIGN(sizeof(kcore_seg_t)) + ALIGN(sizeof(cpu_kcore_hdr_t)) + 1332 ALIGN(mem_cluster_cnt * sizeof(phys_ram_seg_t)); 1333 if (roundup(size, dbtob(1)) != dbtob(1)) 1334 return -1; 1335 1336 return (1); 1337 } 1338 1339 /* 1340 * cpu_dump_mempagecnt: calculate size of RAM (in pages) to be dumped. 1341 */ 1342 u_long 1343 cpu_dump_mempagecnt() 1344 { 1345 u_long i, n; 1346 1347 n = 0; 1348 for (i = 0; i < mem_cluster_cnt; i++) 1349 n += atop(mem_clusters[i].size); 1350 return (n); 1351 } 1352 1353 /* 1354 * cpu_dump: dump machine-dependent kernel core dump headers. 1355 */ 1356 int 1357 cpu_dump() 1358 { 1359 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1360 char buf[dbtob(1)]; 1361 kcore_seg_t *segp; 1362 cpu_kcore_hdr_t *cpuhdrp; 1363 phys_ram_seg_t *memsegp; 1364 int i; 1365 1366 dump = bdevsw[major(dumpdev)].d_dump; 1367 1368 bzero(buf, sizeof buf); 1369 segp = (kcore_seg_t *)buf; 1370 cpuhdrp = (cpu_kcore_hdr_t *)&buf[ALIGN(sizeof(*segp))]; 1371 memsegp = (phys_ram_seg_t *)&buf[ ALIGN(sizeof(*segp)) + 1372 ALIGN(sizeof(*cpuhdrp))]; 1373 1374 /* 1375 * Generate a segment header. 1376 */ 1377 CORE_SETMAGIC(*segp, KCORE_MAGIC, MID_MACHINE, CORE_CPU); 1378 segp->c_size = dbtob(1) - ALIGN(sizeof(*segp)); 1379 1380 /* 1381 * Add the machine-dependent header info. 1382 */ 1383 cpuhdrp->lev1map_pa = ALPHA_K0SEG_TO_PHYS((vm_offset_t)kernel_lev1map); 1384 cpuhdrp->page_size = PAGE_SIZE; 1385 cpuhdrp->nmemsegs = mem_cluster_cnt; 1386 1387 /* 1388 * Fill in the memory segment descriptors. 1389 */ 1390 for (i = 0; i < mem_cluster_cnt; i++) { 1391 memsegp[i].start = mem_clusters[i].start; 1392 memsegp[i].size = mem_clusters[i].size & ~PAGE_MASK; 1393 } 1394 1395 return (dump(dumpdev, dumplo, (caddr_t)buf, dbtob(1))); 1396 } 1397 1398 /* 1399 * This is called by main to set dumplo and dumpsize. 1400 * Dumps always skip the first CLBYTES of disk space 1401 * in case there might be a disk label stored there. 1402 * If there is extra space, put dump at the end to 1403 * reduce the chance that swapping trashes it. 1404 */ 1405 void 1406 cpu_dumpconf() 1407 { 1408 int nblks, dumpblks; /* size of dump area */ 1409 int maj; 1410 1411 if (dumpdev == NODEV) 1412 goto bad; 1413 maj = major(dumpdev); 1414 if (maj < 0 || maj >= nblkdev) 1415 panic("dumpconf: bad dumpdev=0x%x", dumpdev); 1416 if (bdevsw[maj].d_psize == NULL) 1417 goto bad; 1418 nblks = (*bdevsw[maj].d_psize)(dumpdev); 1419 if (nblks <= ctod(1)) 1420 goto bad; 1421 1422 dumpblks = cpu_dumpsize(); 1423 if (dumpblks < 0) 1424 goto bad; 1425 dumpblks += ctod(cpu_dump_mempagecnt()); 1426 1427 /* If dump won't fit (incl. room for possible label), punt. */ 1428 if (dumpblks > (nblks - ctod(1))) 1429 goto bad; 1430 1431 /* Put dump at end of partition */ 1432 dumplo = nblks - dumpblks; 1433 1434 /* dumpsize is in page units, and doesn't include headers. */ 1435 dumpsize = cpu_dump_mempagecnt(); 1436 return; 1437 1438 bad: 1439 dumpsize = 0; 1440 return; 1441 } 1442 1443 /* 1444 * Dump the kernel's image to the swap partition. 1445 */ 1446 #define BYTES_PER_DUMP NBPG 1447 1448 void 1449 dumpsys() 1450 { 1451 u_long totalbytesleft, bytes, i, n, memcl; 1452 u_long maddr; 1453 int psize; 1454 daddr_t blkno; 1455 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1456 int error; 1457 1458 /* Save registers. */ 1459 savectx(&dumppcb); 1460 1461 msgbufenabled = 0; /* don't record dump msgs in msgbuf */ 1462 if (dumpdev == NODEV) 1463 return; 1464 1465 /* 1466 * For dumps during autoconfiguration, 1467 * if dump device has already configured... 1468 */ 1469 if (dumpsize == 0) 1470 cpu_dumpconf(); 1471 if (dumplo <= 0) { 1472 printf("\ndump to dev %u,%u not possible\n", major(dumpdev), 1473 minor(dumpdev)); 1474 return; 1475 } 1476 printf("\ndumping to dev %u,%u offset %ld\n", major(dumpdev), 1477 minor(dumpdev), dumplo); 1478 1479 psize = (*bdevsw[major(dumpdev)].d_psize)(dumpdev); 1480 printf("dump "); 1481 if (psize == -1) { 1482 printf("area unavailable\n"); 1483 return; 1484 } 1485 1486 /* XXX should purge all outstanding keystrokes. */ 1487 1488 if ((error = cpu_dump()) != 0) 1489 goto err; 1490 1491 totalbytesleft = ptoa(cpu_dump_mempagecnt()); 1492 blkno = dumplo + cpu_dumpsize(); 1493 dump = bdevsw[major(dumpdev)].d_dump; 1494 error = 0; 1495 1496 for (memcl = 0; memcl < mem_cluster_cnt; memcl++) { 1497 maddr = mem_clusters[memcl].start; 1498 bytes = mem_clusters[memcl].size & ~PAGE_MASK; 1499 1500 for (i = 0; i < bytes; i += n, totalbytesleft -= n) { 1501 1502 /* Print out how many MBs we to go. */ 1503 if ((totalbytesleft % (1024*1024)) == 0) 1504 printf("%d ", totalbytesleft / (1024 * 1024)); 1505 1506 /* Limit size for next transfer. */ 1507 n = bytes - i; 1508 if (n > BYTES_PER_DUMP) 1509 n = BYTES_PER_DUMP; 1510 1511 error = (*dump)(dumpdev, blkno, 1512 (caddr_t)ALPHA_PHYS_TO_K0SEG(maddr), n); 1513 if (error) 1514 goto err; 1515 maddr += n; 1516 blkno += btodb(n); /* XXX? */ 1517 1518 /* XXX should look for keystrokes, to cancel. */ 1519 } 1520 } 1521 1522 err: 1523 switch (error) { 1524 1525 case ENXIO: 1526 printf("device bad\n"); 1527 break; 1528 1529 case EFAULT: 1530 printf("device not ready\n"); 1531 break; 1532 1533 case EINVAL: 1534 printf("area improper\n"); 1535 break; 1536 1537 case EIO: 1538 printf("i/o error\n"); 1539 break; 1540 1541 case EINTR: 1542 printf("aborted from console\n"); 1543 break; 1544 1545 case 0: 1546 printf("succeeded\n"); 1547 break; 1548 1549 default: 1550 printf("error %d\n", error); 1551 break; 1552 } 1553 printf("\n\n"); 1554 delay(1000); 1555 } 1556 1557 void 1558 frametoreg(framep, regp) 1559 struct trapframe *framep; 1560 struct reg *regp; 1561 { 1562 1563 regp->r_regs[R_V0] = framep->tf_regs[FRAME_V0]; 1564 regp->r_regs[R_T0] = framep->tf_regs[FRAME_T0]; 1565 regp->r_regs[R_T1] = framep->tf_regs[FRAME_T1]; 1566 regp->r_regs[R_T2] = framep->tf_regs[FRAME_T2]; 1567 regp->r_regs[R_T3] = framep->tf_regs[FRAME_T3]; 1568 regp->r_regs[R_T4] = framep->tf_regs[FRAME_T4]; 1569 regp->r_regs[R_T5] = framep->tf_regs[FRAME_T5]; 1570 regp->r_regs[R_T6] = framep->tf_regs[FRAME_T6]; 1571 regp->r_regs[R_T7] = framep->tf_regs[FRAME_T7]; 1572 regp->r_regs[R_S0] = framep->tf_regs[FRAME_S0]; 1573 regp->r_regs[R_S1] = framep->tf_regs[FRAME_S1]; 1574 regp->r_regs[R_S2] = framep->tf_regs[FRAME_S2]; 1575 regp->r_regs[R_S3] = framep->tf_regs[FRAME_S3]; 1576 regp->r_regs[R_S4] = framep->tf_regs[FRAME_S4]; 1577 regp->r_regs[R_S5] = framep->tf_regs[FRAME_S5]; 1578 regp->r_regs[R_S6] = framep->tf_regs[FRAME_S6]; 1579 regp->r_regs[R_A0] = framep->tf_regs[FRAME_A0]; 1580 regp->r_regs[R_A1] = framep->tf_regs[FRAME_A1]; 1581 regp->r_regs[R_A2] = framep->tf_regs[FRAME_A2]; 1582 regp->r_regs[R_A3] = framep->tf_regs[FRAME_A3]; 1583 regp->r_regs[R_A4] = framep->tf_regs[FRAME_A4]; 1584 regp->r_regs[R_A5] = framep->tf_regs[FRAME_A5]; 1585 regp->r_regs[R_T8] = framep->tf_regs[FRAME_T8]; 1586 regp->r_regs[R_T9] = framep->tf_regs[FRAME_T9]; 1587 regp->r_regs[R_T10] = framep->tf_regs[FRAME_T10]; 1588 regp->r_regs[R_T11] = framep->tf_regs[FRAME_T11]; 1589 regp->r_regs[R_RA] = framep->tf_regs[FRAME_RA]; 1590 regp->r_regs[R_T12] = framep->tf_regs[FRAME_T12]; 1591 regp->r_regs[R_AT] = framep->tf_regs[FRAME_AT]; 1592 regp->r_regs[R_GP] = framep->tf_regs[FRAME_GP]; 1593 /* regp->r_regs[R_SP] = framep->tf_regs[FRAME_SP]; XXX */ 1594 regp->r_regs[R_ZERO] = 0; 1595 } 1596 1597 void 1598 regtoframe(regp, framep) 1599 struct reg *regp; 1600 struct trapframe *framep; 1601 { 1602 1603 framep->tf_regs[FRAME_V0] = regp->r_regs[R_V0]; 1604 framep->tf_regs[FRAME_T0] = regp->r_regs[R_T0]; 1605 framep->tf_regs[FRAME_T1] = regp->r_regs[R_T1]; 1606 framep->tf_regs[FRAME_T2] = regp->r_regs[R_T2]; 1607 framep->tf_regs[FRAME_T3] = regp->r_regs[R_T3]; 1608 framep->tf_regs[FRAME_T4] = regp->r_regs[R_T4]; 1609 framep->tf_regs[FRAME_T5] = regp->r_regs[R_T5]; 1610 framep->tf_regs[FRAME_T6] = regp->r_regs[R_T6]; 1611 framep->tf_regs[FRAME_T7] = regp->r_regs[R_T7]; 1612 framep->tf_regs[FRAME_S0] = regp->r_regs[R_S0]; 1613 framep->tf_regs[FRAME_S1] = regp->r_regs[R_S1]; 1614 framep->tf_regs[FRAME_S2] = regp->r_regs[R_S2]; 1615 framep->tf_regs[FRAME_S3] = regp->r_regs[R_S3]; 1616 framep->tf_regs[FRAME_S4] = regp->r_regs[R_S4]; 1617 framep->tf_regs[FRAME_S5] = regp->r_regs[R_S5]; 1618 framep->tf_regs[FRAME_S6] = regp->r_regs[R_S6]; 1619 framep->tf_regs[FRAME_A0] = regp->r_regs[R_A0]; 1620 framep->tf_regs[FRAME_A1] = regp->r_regs[R_A1]; 1621 framep->tf_regs[FRAME_A2] = regp->r_regs[R_A2]; 1622 framep->tf_regs[FRAME_A3] = regp->r_regs[R_A3]; 1623 framep->tf_regs[FRAME_A4] = regp->r_regs[R_A4]; 1624 framep->tf_regs[FRAME_A5] = regp->r_regs[R_A5]; 1625 framep->tf_regs[FRAME_T8] = regp->r_regs[R_T8]; 1626 framep->tf_regs[FRAME_T9] = regp->r_regs[R_T9]; 1627 framep->tf_regs[FRAME_T10] = regp->r_regs[R_T10]; 1628 framep->tf_regs[FRAME_T11] = regp->r_regs[R_T11]; 1629 framep->tf_regs[FRAME_RA] = regp->r_regs[R_RA]; 1630 framep->tf_regs[FRAME_T12] = regp->r_regs[R_T12]; 1631 framep->tf_regs[FRAME_AT] = regp->r_regs[R_AT]; 1632 framep->tf_regs[FRAME_GP] = regp->r_regs[R_GP]; 1633 /* framep->tf_regs[FRAME_SP] = regp->r_regs[R_SP]; XXX */ 1634 /* ??? = regp->r_regs[R_ZERO]; */ 1635 } 1636 1637 void 1638 printregs(regp) 1639 struct reg *regp; 1640 { 1641 int i; 1642 1643 for (i = 0; i < 32; i++) 1644 printf("R%d:\t0x%016lx%s", i, regp->r_regs[i], 1645 i & 1 ? "\n" : "\t"); 1646 } 1647 1648 void 1649 regdump(framep) 1650 struct trapframe *framep; 1651 { 1652 struct reg reg; 1653 1654 frametoreg(framep, ®); 1655 reg.r_regs[R_SP] = alpha_pal_rdusp(); 1656 1657 printf("REGISTERS:\n"); 1658 printregs(®); 1659 } 1660 1661 #ifdef DEBUG 1662 int sigdebug = 0; 1663 int sigpid = 0; 1664 #define SDB_FOLLOW 0x01 1665 #define SDB_KSTACK 0x02 1666 #endif 1667 1668 /* 1669 * Send an interrupt to process. 1670 */ 1671 void 1672 sendsig(catcher, sig, mask, code) 1673 sig_t catcher; 1674 int sig, mask; 1675 u_long code; 1676 { 1677 struct proc *p = curproc; 1678 struct sigcontext *scp, ksc; 1679 struct trapframe *frame; 1680 struct sigacts *psp = p->p_sigacts; 1681 int oonstack, fsize, rndfsize; 1682 extern char sigcode[], esigcode[]; 1683 extern struct proc *fpcurproc; 1684 1685 frame = p->p_md.md_tf; 1686 oonstack = psp->ps_sigstk.ss_flags & SS_ONSTACK; 1687 fsize = sizeof ksc; 1688 rndfsize = ((fsize + 15) / 16) * 16; 1689 /* 1690 * Allocate and validate space for the signal handler 1691 * context. Note that if the stack is in P0 space, the 1692 * call to grow() is a nop, and the useracc() check 1693 * will fail if the process has not already allocated 1694 * the space with a `brk'. 1695 */ 1696 if ((psp->ps_flags & SAS_ALTSTACK) && !oonstack && 1697 (psp->ps_sigonstack & sigmask(sig))) { 1698 scp = (struct sigcontext *)((caddr_t)psp->ps_sigstk.ss_sp + 1699 psp->ps_sigstk.ss_size - rndfsize); 1700 psp->ps_sigstk.ss_flags |= SS_ONSTACK; 1701 } else 1702 scp = (struct sigcontext *)(alpha_pal_rdusp() - rndfsize); 1703 if ((u_long)scp <= USRSTACK - ctob(p->p_vmspace->vm_ssize)) 1704 #if defined(UVM) 1705 (void)uvm_grow(p, (u_long)scp); 1706 #else 1707 (void)grow(p, (u_long)scp); 1708 #endif 1709 #ifdef DEBUG 1710 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1711 printf("sendsig(%d): sig %d ssp %p usp %p\n", p->p_pid, 1712 sig, &oonstack, scp); 1713 #endif 1714 #if defined(UVM) 1715 if (uvm_useracc((caddr_t)scp, fsize, B_WRITE) == 0) { 1716 #else 1717 if (useracc((caddr_t)scp, fsize, B_WRITE) == 0) { 1718 #endif 1719 #ifdef DEBUG 1720 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1721 printf("sendsig(%d): useracc failed on sig %d\n", 1722 p->p_pid, sig); 1723 #endif 1724 /* 1725 * Process has trashed its stack; give it an illegal 1726 * instruction to halt it in its tracks. 1727 */ 1728 SIGACTION(p, SIGILL) = SIG_DFL; 1729 sig = sigmask(SIGILL); 1730 p->p_sigignore &= ~sig; 1731 p->p_sigcatch &= ~sig; 1732 p->p_sigmask &= ~sig; 1733 psignal(p, SIGILL); 1734 return; 1735 #if !defined(UVM) /* this construct will balance braces for ctags(1) */ 1736 } 1737 #else 1738 } 1739 #endif 1740 1741 /* 1742 * Build the signal context to be used by sigreturn. 1743 */ 1744 ksc.sc_onstack = oonstack; 1745 ksc.sc_mask = mask; 1746 ksc.sc_pc = frame->tf_regs[FRAME_PC]; 1747 ksc.sc_ps = frame->tf_regs[FRAME_PS]; 1748 1749 /* copy the registers. */ 1750 frametoreg(frame, (struct reg *)ksc.sc_regs); 1751 ksc.sc_regs[R_ZERO] = 0xACEDBADE; /* magic number */ 1752 ksc.sc_regs[R_SP] = alpha_pal_rdusp(); 1753 1754 /* save the floating-point state, if necessary, then copy it. */ 1755 if (p == fpcurproc) { 1756 alpha_pal_wrfen(1); 1757 savefpstate(&p->p_addr->u_pcb.pcb_fp); 1758 alpha_pal_wrfen(0); 1759 fpcurproc = NULL; 1760 } 1761 ksc.sc_ownedfp = p->p_md.md_flags & MDP_FPUSED; 1762 bcopy(&p->p_addr->u_pcb.pcb_fp, (struct fpreg *)ksc.sc_fpregs, 1763 sizeof(struct fpreg)); 1764 ksc.sc_fp_control = 0; /* XXX ? */ 1765 bzero(ksc.sc_reserved, sizeof ksc.sc_reserved); /* XXX */ 1766 bzero(ksc.sc_xxx, sizeof ksc.sc_xxx); /* XXX */ 1767 1768 1769 #ifdef COMPAT_OSF1 1770 /* 1771 * XXX Create an OSF/1-style sigcontext and associated goo. 1772 */ 1773 #endif 1774 1775 /* 1776 * copy the frame out to userland. 1777 */ 1778 (void) copyout((caddr_t)&ksc, (caddr_t)scp, fsize); 1779 #ifdef DEBUG 1780 if (sigdebug & SDB_FOLLOW) 1781 printf("sendsig(%d): sig %d scp %p code %lx\n", p->p_pid, sig, 1782 scp, code); 1783 #endif 1784 1785 /* 1786 * Set up the registers to return to sigcode. 1787 */ 1788 frame->tf_regs[FRAME_PC] = 1789 (u_int64_t)PS_STRINGS - (esigcode - sigcode); 1790 frame->tf_regs[FRAME_A0] = sig; 1791 frame->tf_regs[FRAME_A1] = code; 1792 frame->tf_regs[FRAME_A2] = (u_int64_t)scp; 1793 frame->tf_regs[FRAME_T12] = (u_int64_t)catcher; /* t12 is pv */ 1794 alpha_pal_wrusp((unsigned long)scp); 1795 1796 #ifdef DEBUG 1797 if (sigdebug & SDB_FOLLOW) 1798 printf("sendsig(%d): pc %lx, catcher %lx\n", p->p_pid, 1799 frame->tf_regs[FRAME_PC], frame->tf_regs[FRAME_A3]); 1800 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1801 printf("sendsig(%d): sig %d returns\n", 1802 p->p_pid, sig); 1803 #endif 1804 } 1805 1806 /* 1807 * System call to cleanup state after a signal 1808 * has been taken. Reset signal mask and 1809 * stack state from context left by sendsig (above). 1810 * Return to previous pc and psl as specified by 1811 * context left by sendsig. Check carefully to 1812 * make sure that the user has not modified the 1813 * psl to gain improper priviledges or to cause 1814 * a machine fault. 1815 */ 1816 /* ARGSUSED */ 1817 int 1818 sys_sigreturn(p, v, retval) 1819 struct proc *p; 1820 void *v; 1821 register_t *retval; 1822 { 1823 struct sys_sigreturn_args /* { 1824 syscallarg(struct sigcontext *) sigcntxp; 1825 } */ *uap = v; 1826 struct sigcontext *scp, ksc; 1827 extern struct proc *fpcurproc; 1828 1829 scp = SCARG(uap, sigcntxp); 1830 #ifdef DEBUG 1831 if (sigdebug & SDB_FOLLOW) 1832 printf("sigreturn: pid %d, scp %p\n", p->p_pid, scp); 1833 #endif 1834 1835 if (ALIGN(scp) != (u_int64_t)scp) 1836 return (EINVAL); 1837 1838 /* 1839 * Test and fetch the context structure. 1840 * We grab it all at once for speed. 1841 */ 1842 #if defined(UVM) 1843 if (uvm_useracc((caddr_t)scp, sizeof (*scp), B_WRITE) == 0 || 1844 copyin((caddr_t)scp, (caddr_t)&ksc, sizeof ksc)) 1845 return (EINVAL); 1846 #else 1847 if (useracc((caddr_t)scp, sizeof (*scp), B_WRITE) == 0 || 1848 copyin((caddr_t)scp, (caddr_t)&ksc, sizeof ksc)) 1849 return (EINVAL); 1850 #endif 1851 1852 if (ksc.sc_regs[R_ZERO] != 0xACEDBADE) /* magic number */ 1853 return (EINVAL); 1854 /* 1855 * Restore the user-supplied information 1856 */ 1857 if (ksc.sc_onstack) 1858 p->p_sigacts->ps_sigstk.ss_flags |= SS_ONSTACK; 1859 else 1860 p->p_sigacts->ps_sigstk.ss_flags &= ~SS_ONSTACK; 1861 p->p_sigmask = ksc.sc_mask &~ sigcantmask; 1862 1863 p->p_md.md_tf->tf_regs[FRAME_PC] = ksc.sc_pc; 1864 p->p_md.md_tf->tf_regs[FRAME_PS] = 1865 (ksc.sc_ps | ALPHA_PSL_USERSET) & ~ALPHA_PSL_USERCLR; 1866 1867 regtoframe((struct reg *)ksc.sc_regs, p->p_md.md_tf); 1868 alpha_pal_wrusp(ksc.sc_regs[R_SP]); 1869 1870 /* XXX ksc.sc_ownedfp ? */ 1871 if (p == fpcurproc) 1872 fpcurproc = NULL; 1873 bcopy((struct fpreg *)ksc.sc_fpregs, &p->p_addr->u_pcb.pcb_fp, 1874 sizeof(struct fpreg)); 1875 /* XXX ksc.sc_fp_control ? */ 1876 1877 #ifdef DEBUG 1878 if (sigdebug & SDB_FOLLOW) 1879 printf("sigreturn(%d): returns\n", p->p_pid); 1880 #endif 1881 return (EJUSTRETURN); 1882 } 1883 1884 /* 1885 * machine dependent system variables. 1886 */ 1887 int 1888 cpu_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 1889 int *name; 1890 u_int namelen; 1891 void *oldp; 1892 size_t *oldlenp; 1893 void *newp; 1894 size_t newlen; 1895 struct proc *p; 1896 { 1897 dev_t consdev; 1898 1899 /* all sysctl names at this level are terminal */ 1900 if (namelen != 1) 1901 return (ENOTDIR); /* overloaded */ 1902 1903 switch (name[0]) { 1904 case CPU_CONSDEV: 1905 if (cn_tab != NULL) 1906 consdev = cn_tab->cn_dev; 1907 else 1908 consdev = NODEV; 1909 return (sysctl_rdstruct(oldp, oldlenp, newp, &consdev, 1910 sizeof consdev)); 1911 1912 case CPU_ROOT_DEVICE: 1913 return (sysctl_rdstring(oldp, oldlenp, newp, 1914 root_device->dv_xname)); 1915 1916 case CPU_UNALIGNED_PRINT: 1917 return (sysctl_int(oldp, oldlenp, newp, newlen, 1918 &alpha_unaligned_print)); 1919 1920 case CPU_UNALIGNED_FIX: 1921 return (sysctl_int(oldp, oldlenp, newp, newlen, 1922 &alpha_unaligned_fix)); 1923 1924 case CPU_UNALIGNED_SIGBUS: 1925 return (sysctl_int(oldp, oldlenp, newp, newlen, 1926 &alpha_unaligned_sigbus)); 1927 1928 case CPU_BOOTED_KERNEL: 1929 return (sysctl_rdstring(oldp, oldlenp, newp, 1930 bootinfo.booted_kernel)); 1931 1932 default: 1933 return (EOPNOTSUPP); 1934 } 1935 /* NOTREACHED */ 1936 } 1937 1938 /* 1939 * Set registers on exec. 1940 */ 1941 void 1942 setregs(p, pack, stack) 1943 register struct proc *p; 1944 struct exec_package *pack; 1945 u_long stack; 1946 { 1947 struct trapframe *tfp = p->p_md.md_tf; 1948 extern struct proc *fpcurproc; 1949 #ifdef DEBUG 1950 int i; 1951 #endif 1952 1953 #ifdef DEBUG 1954 /* 1955 * Crash and dump, if the user requested it. 1956 */ 1957 if (boothowto & RB_DUMP) 1958 panic("crash requested by boot flags"); 1959 #endif 1960 1961 #ifdef DEBUG 1962 for (i = 0; i < FRAME_SIZE; i++) 1963 tfp->tf_regs[i] = 0xbabefacedeadbeef; 1964 #else 1965 bzero(tfp->tf_regs, FRAME_SIZE * sizeof tfp->tf_regs[0]); 1966 #endif 1967 bzero(&p->p_addr->u_pcb.pcb_fp, sizeof p->p_addr->u_pcb.pcb_fp); 1968 #define FP_RN 2 /* XXX */ 1969 p->p_addr->u_pcb.pcb_fp.fpr_cr = (long)FP_RN << 58; 1970 alpha_pal_wrusp(stack); 1971 tfp->tf_regs[FRAME_PS] = ALPHA_PSL_USERSET; 1972 tfp->tf_regs[FRAME_PC] = pack->ep_entry & ~3; 1973 1974 tfp->tf_regs[FRAME_A0] = stack; /* a0 = sp */ 1975 tfp->tf_regs[FRAME_A1] = 0; /* a1 = rtld cleanup */ 1976 tfp->tf_regs[FRAME_A2] = 0; /* a2 = rtld object */ 1977 tfp->tf_regs[FRAME_A3] = (u_int64_t)PS_STRINGS; /* a3 = ps_strings */ 1978 tfp->tf_regs[FRAME_T12] = tfp->tf_regs[FRAME_PC]; /* a.k.a. PV */ 1979 1980 p->p_md.md_flags &= ~MDP_FPUSED; 1981 if (fpcurproc == p) 1982 fpcurproc = NULL; 1983 } 1984 1985 void 1986 netintr() 1987 { 1988 int n, s; 1989 1990 s = splhigh(); 1991 n = netisr; 1992 netisr = 0; 1993 splx(s); 1994 1995 #define DONETISR(bit, fn) \ 1996 do { \ 1997 if (n & (1 << (bit))) \ 1998 fn; \ 1999 } while (0) 2000 2001 #ifdef INET 2002 #if NARP > 0 2003 DONETISR(NETISR_ARP, arpintr()); 2004 #endif 2005 DONETISR(NETISR_IP, ipintr()); 2006 #endif 2007 #ifdef NETATALK 2008 DONETISR(NETISR_ATALK, atintr()); 2009 #endif 2010 #ifdef NS 2011 DONETISR(NETISR_NS, nsintr()); 2012 #endif 2013 #ifdef ISO 2014 DONETISR(NETISR_ISO, clnlintr()); 2015 #endif 2016 #ifdef CCITT 2017 DONETISR(NETISR_CCITT, ccittintr()); 2018 #endif 2019 #ifdef NATM 2020 DONETISR(NETISR_NATM, natmintr()); 2021 #endif 2022 #if NPPP > 1 2023 DONETISR(NETISR_PPP, pppintr()); 2024 #endif 2025 2026 #undef DONETISR 2027 } 2028 2029 void 2030 do_sir() 2031 { 2032 u_int64_t n; 2033 2034 do { 2035 (void)splhigh(); 2036 n = ssir; 2037 ssir = 0; 2038 splsoft(); /* don't recurse through spl0() */ 2039 2040 #if defined(UVM) 2041 #define COUNT_SOFT uvmexp.softs++ 2042 #else 2043 #define COUNT_SOFT cnt.v_soft++ 2044 #endif 2045 2046 #define DO_SIR(bit, fn) \ 2047 do { \ 2048 if (n & (bit)) { \ 2049 COUNT_SOFT; \ 2050 fn; \ 2051 } \ 2052 } while (0) 2053 2054 DO_SIR(SIR_NET, netintr()); 2055 DO_SIR(SIR_CLOCK, softclock()); 2056 2057 #undef COUNT_SOFT 2058 #undef DO_SIR 2059 } while (ssir != 0); 2060 } 2061 2062 int 2063 spl0() 2064 { 2065 2066 if (ssir) 2067 do_sir(); /* it lowers the IPL itself */ 2068 2069 return (alpha_pal_swpipl(ALPHA_PSL_IPL_0)); 2070 } 2071 2072 /* 2073 * The following primitives manipulate the run queues. _whichqs tells which 2074 * of the 32 queues _qs have processes in them. Setrunqueue puts processes 2075 * into queues, Remrunqueue removes them from queues. The running process is 2076 * on no queue, other processes are on a queue related to p->p_priority, 2077 * divided by 4 actually to shrink the 0-127 range of priorities into the 32 2078 * available queues. 2079 */ 2080 /* 2081 * setrunqueue(p) 2082 * proc *p; 2083 * 2084 * Call should be made at splclock(), and p->p_stat should be SRUN. 2085 */ 2086 2087 void 2088 setrunqueue(p) 2089 struct proc *p; 2090 { 2091 int bit; 2092 2093 /* firewall: p->p_back must be NULL */ 2094 if (p->p_back != NULL) 2095 panic("setrunqueue"); 2096 2097 bit = p->p_priority >> 2; 2098 whichqs |= (1 << bit); 2099 p->p_forw = (struct proc *)&qs[bit]; 2100 p->p_back = qs[bit].ph_rlink; 2101 p->p_back->p_forw = p; 2102 qs[bit].ph_rlink = p; 2103 } 2104 2105 /* 2106 * remrunqueue(p) 2107 * 2108 * Call should be made at splclock(). 2109 */ 2110 void 2111 remrunqueue(p) 2112 struct proc *p; 2113 { 2114 int bit; 2115 2116 bit = p->p_priority >> 2; 2117 if ((whichqs & (1 << bit)) == 0) 2118 panic("remrunqueue"); 2119 2120 p->p_back->p_forw = p->p_forw; 2121 p->p_forw->p_back = p->p_back; 2122 p->p_back = NULL; /* for firewall checking. */ 2123 2124 if ((struct proc *)&qs[bit] == qs[bit].ph_link) 2125 whichqs &= ~(1 << bit); 2126 } 2127 2128 /* 2129 * Return the best possible estimate of the time in the timeval 2130 * to which tvp points. Unfortunately, we can't read the hardware registers. 2131 * We guarantee that the time will be greater than the value obtained by a 2132 * previous call. 2133 */ 2134 void 2135 microtime(tvp) 2136 register struct timeval *tvp; 2137 { 2138 int s = splclock(); 2139 static struct timeval lasttime; 2140 2141 *tvp = time; 2142 #ifdef notdef 2143 tvp->tv_usec += clkread(); 2144 while (tvp->tv_usec > 1000000) { 2145 tvp->tv_sec++; 2146 tvp->tv_usec -= 1000000; 2147 } 2148 #endif 2149 if (tvp->tv_sec == lasttime.tv_sec && 2150 tvp->tv_usec <= lasttime.tv_usec && 2151 (tvp->tv_usec = lasttime.tv_usec + 1) > 1000000) { 2152 tvp->tv_sec++; 2153 tvp->tv_usec -= 1000000; 2154 } 2155 lasttime = *tvp; 2156 splx(s); 2157 } 2158 2159 /* 2160 * Wait "n" microseconds. 2161 */ 2162 void 2163 delay(n) 2164 unsigned long n; 2165 { 2166 long N = cycles_per_usec * (n); 2167 2168 while (N > 0) /* XXX */ 2169 N -= 3; /* XXX */ 2170 } 2171 2172 #if defined(COMPAT_OSF1) || 1 /* XXX */ 2173 void cpu_exec_ecoff_setregs __P((struct proc *, struct exec_package *, 2174 u_long)); 2175 2176 void 2177 cpu_exec_ecoff_setregs(p, epp, stack) 2178 struct proc *p; 2179 struct exec_package *epp; 2180 u_long stack; 2181 { 2182 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2183 2184 setregs(p, epp, stack); 2185 p->p_md.md_tf->tf_regs[FRAME_GP] = execp->a.gp_value; 2186 } 2187 2188 /* 2189 * cpu_exec_ecoff_hook(): 2190 * cpu-dependent ECOFF format hook for execve(). 2191 * 2192 * Do any machine-dependent diddling of the exec package when doing ECOFF. 2193 * 2194 */ 2195 int 2196 cpu_exec_ecoff_hook(p, epp) 2197 struct proc *p; 2198 struct exec_package *epp; 2199 { 2200 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2201 extern struct emul emul_netbsd; 2202 #ifdef COMPAT_OSF1 2203 extern struct emul emul_osf1; 2204 #endif 2205 2206 switch (execp->f.f_magic) { 2207 #ifdef COMPAT_OSF1 2208 case ECOFF_MAGIC_ALPHA: 2209 epp->ep_emul = &emul_osf1; 2210 break; 2211 #endif 2212 2213 case ECOFF_MAGIC_NETBSD_ALPHA: 2214 epp->ep_emul = &emul_netbsd; 2215 break; 2216 2217 default: 2218 return ENOEXEC; 2219 } 2220 return 0; 2221 } 2222 #endif 2223 2224 int 2225 alpha_pa_access(pa) 2226 u_long pa; 2227 { 2228 int i; 2229 2230 for (i = 0; i < mem_cluster_cnt; i++) { 2231 if (pa < mem_clusters[i].start) 2232 continue; 2233 if ((pa - mem_clusters[i].start) >= 2234 (mem_clusters[i].size & ~PAGE_MASK)) 2235 continue; 2236 return (mem_clusters[i].size & PAGE_MASK); /* prot */ 2237 } 2238 return (PROT_NONE); 2239 } 2240 2241 /* XXX XXX BEGIN XXX XXX */ 2242 vm_offset_t alpha_XXX_dmamap_or; /* XXX */ 2243 /* XXX */ 2244 vm_offset_t /* XXX */ 2245 alpha_XXX_dmamap(v) /* XXX */ 2246 vm_offset_t v; /* XXX */ 2247 { /* XXX */ 2248 /* XXX */ 2249 return (vtophys(v) | alpha_XXX_dmamap_or); /* XXX */ 2250 } /* XXX */ 2251 /* XXX XXX END XXX XXX */ 2252
Indexes created Fri Oct 03 02:09:57 GMT 2025