machdep.c revision 1.131
1 /* $NetBSD: machdep.c,v 1.131 1998/07/05 04:37:35 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 78 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 79 80 __KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.131 1998/07/05 04:37:35 jonathan Exp $"); 81 82 #include <sys/param.h> 83 #include <sys/systm.h> 84 #include <sys/signalvar.h> 85 #include <sys/kernel.h> 86 #include <sys/map.h> 87 #include <sys/proc.h> 88 #include <sys/buf.h> 89 #include <sys/reboot.h> 90 #include <sys/device.h> 91 #include <sys/file.h> 92 #ifdef REAL_CLISTS 93 #include <sys/clist.h> 94 #endif 95 #include <sys/callout.h> 96 #include <sys/malloc.h> 97 #include <sys/mbuf.h> 98 #include <sys/mman.h> 99 #include <sys/msgbuf.h> 100 #include <sys/ioctl.h> 101 #include <sys/tty.h> 102 #include <sys/user.h> 103 #include <sys/exec.h> 104 #include <sys/exec_ecoff.h> 105 #include <vm/vm.h> 106 #include <sys/sysctl.h> 107 #include <sys/core.h> 108 #include <sys/kcore.h> 109 #include <machine/kcore.h> 110 #ifdef SYSVMSG 111 #include <sys/msg.h> 112 #endif 113 #ifdef SYSVSEM 114 #include <sys/sem.h> 115 #endif 116 #ifdef SYSVSHM 117 #include <sys/shm.h> 118 #endif 119 120 #include <sys/mount.h> 121 #include <sys/syscallargs.h> 122 123 #include <vm/vm_kern.h> 124 125 #if defined(UVM) 126 #include <uvm/uvm_extern.h> 127 #endif 128 129 #include <dev/cons.h> 130 131 #include <machine/autoconf.h> 132 #include <machine/cpu.h> 133 #include <machine/reg.h> 134 #include <machine/rpb.h> 135 #include <machine/prom.h> 136 #include <machine/conf.h> 137 138 #include <net/netisr.h> 139 #include <net/if.h> 140 141 #ifdef INET 142 #include <net/route.h> 143 #include <netinet/in.h> 144 #include <netinet/ip_var.h> 145 #include "arp.h" 146 #if NARP > 0 147 #include <netinet/if_inarp.h> 148 #endif 149 #endif 150 #ifdef NS 151 #include <netns/ns_var.h> 152 #endif 153 #ifdef ISO 154 #include <netiso/iso.h> 155 #include <netiso/clnp.h> 156 #endif 157 #ifdef CCITT 158 #include <netccitt/x25.h> 159 #include <netccitt/pk.h> 160 #include <netccitt/pk_extern.h> 161 #endif 162 #ifdef NATM 163 #include <netnatm/natm.h> 164 #endif 165 #ifdef NETATALK 166 #include <netatalk/at_extern.h> 167 #endif 168 #include "ppp.h" 169 #if NPPP > 0 170 #include <net/ppp_defs.h> 171 #include <net/if_ppp.h> 172 #endif 173 174 #ifdef DDB 175 #include <machine/db_machdep.h> 176 #include <ddb/db_access.h> 177 #include <ddb/db_sym.h> 178 #include <ddb/db_extern.h> 179 #include <ddb/db_interface.h> 180 #endif 181 182 #if defined(UVM) 183 vm_map_t exec_map = NULL; 184 vm_map_t mb_map = NULL; 185 vm_map_t phys_map = NULL; 186 #else 187 vm_map_t buffer_map; 188 #endif 189 190 /* 191 * Declare these as initialized data so we can patch them. 192 */ 193 int nswbuf = 0; 194 #ifdef NBUF 195 int nbuf = NBUF; 196 #else 197 int nbuf = 0; 198 #endif 199 #ifdef BUFPAGES 200 int bufpages = BUFPAGES; 201 #else 202 int bufpages = 0; 203 #endif 204 caddr_t msgbufaddr; 205 206 int maxmem; /* max memory per process */ 207 208 int totalphysmem; /* total amount of physical memory in system */ 209 int physmem; /* physical memory used by NetBSD + some rsvd */ 210 int resvmem; /* amount of memory reserved for PROM */ 211 int unusedmem; /* amount of memory for OS that we don't use */ 212 int unknownmem; /* amount of memory with an unknown use */ 213 214 int cputype; /* system type, from the RPB */ 215 216 /* 217 * XXX We need an address to which we can assign things so that they 218 * won't be optimized away because we didn't use the value. 219 */ 220 u_int32_t no_optimize; 221 222 /* the following is used externally (sysctl_hw) */ 223 char machine[] = MACHINE; /* from <machine/param.h> */ 224 char machine_arch[] = MACHINE_ARCH; /* from <machine/param.h> */ 225 char cpu_model[128]; 226 227 struct user *proc0paddr; 228 229 /* Number of machine cycles per microsecond */ 230 u_int64_t cycles_per_usec; 231 232 /* number of cpus in the box. really! */ 233 int ncpus; 234 235 struct bootinfo_kernel bootinfo; 236 237 /* For built-in TCDS */ 238 #if defined(DEC_3000_300) || defined(DEC_3000_500) 239 u_int8_t dec_3000_scsiid[2], dec_3000_scsifast[2]; 240 #endif 241 242 struct platform platform; 243 244 u_int32_t vm_mbuf_size = _VM_MBUF_SIZE; 245 u_int32_t vm_kmem_size = _VM_KMEM_SIZE; 246 u_int32_t vm_phys_size = _VM_PHYS_SIZE; 247 248 #ifdef DDB 249 /* start and end of kernel symbol table */ 250 void *ksym_start, *ksym_end; 251 #endif 252 253 /* for cpu_sysctl() */ 254 int alpha_unaligned_print = 1; /* warn about unaligned accesses */ 255 int alpha_unaligned_fix = 1; /* fix up unaligned accesses */ 256 int alpha_unaligned_sigbus = 0; /* don't SIGBUS on fixed-up accesses */ 257 258 /* 259 * XXX This should be dynamically sized, but we have the chicken-egg problem! 260 * XXX it should also be larger than it is, because not all of the mddt 261 * XXX clusters end up being used for VM. 262 */ 263 phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX]; /* low size bits overloaded */ 264 int mem_cluster_cnt; 265 266 caddr_t allocsys __P((caddr_t)); 267 int cpu_dump __P((void)); 268 int cpu_dumpsize __P((void)); 269 u_long cpu_dump_mempagecnt __P((void)); 270 void dumpsys __P((void)); 271 void identifycpu __P((void)); 272 void netintr __P((void)); 273 void printregs __P((struct reg *)); 274 275 void 276 alpha_init(pfn, ptb, bim, bip, biv) 277 u_long pfn; /* first free PFN number */ 278 u_long ptb; /* PFN of current level 1 page table */ 279 u_long bim; /* bootinfo magic */ 280 u_long bip; /* bootinfo pointer */ 281 u_long biv; /* bootinfo version */ 282 { 283 extern char kernel_text[], _end[]; 284 struct mddt *mddtp; 285 struct mddt_cluster *memc; 286 int i, mddtweird; 287 struct vm_physseg *vps; 288 vm_offset_t kernstart, kernend; 289 vm_offset_t kernstartpfn, kernendpfn, pfn0, pfn1; 290 vm_size_t size; 291 char *p; 292 caddr_t v; 293 char *bootinfo_msg; 294 295 /* NO OUTPUT ALLOWED UNTIL FURTHER NOTICE */ 296 297 /* 298 * Turn off interrupts (not mchecks) and floating point. 299 * Make sure the instruction and data streams are consistent. 300 */ 301 (void)alpha_pal_swpipl(ALPHA_PSL_IPL_HIGH); 302 alpha_pal_wrfen(0); 303 ALPHA_TBIA(); 304 alpha_pal_imb(); 305 306 /* 307 * Get critical system information (if possible, from the 308 * information provided by the boot program). 309 */ 310 bootinfo_msg = NULL; 311 if (bim == BOOTINFO_MAGIC) { 312 if (biv == 0) { /* backward compat */ 313 biv = *(u_long *)bip; 314 bip += 8; 315 } 316 switch (biv) { 317 case 1: { 318 struct bootinfo_v1 *v1p = (struct bootinfo_v1 *)bip; 319 320 bootinfo.ssym = v1p->ssym; 321 bootinfo.esym = v1p->esym; 322 /* hwrpb may not be provided by boot block in v1 */ 323 if (v1p->hwrpb != NULL) { 324 bootinfo.hwrpb_phys = 325 ((struct rpb *)v1p->hwrpb)->rpb_phys; 326 bootinfo.hwrpb_size = v1p->hwrpbsize; 327 } else { 328 bootinfo.hwrpb_phys = 329 ((struct rpb *)HWRPB_ADDR)->rpb_phys; 330 bootinfo.hwrpb_size = 331 ((struct rpb *)HWRPB_ADDR)->rpb_size; 332 } 333 bcopy(v1p->boot_flags, bootinfo.boot_flags, 334 min(sizeof v1p->boot_flags, 335 sizeof bootinfo.boot_flags)); 336 bcopy(v1p->booted_kernel, bootinfo.booted_kernel, 337 min(sizeof v1p->booted_kernel, 338 sizeof bootinfo.booted_kernel)); 339 /* booted dev not provided in bootinfo */ 340 init_prom_interface((struct rpb *) 341 ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys)); 342 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 343 sizeof bootinfo.booted_dev); 344 break; 345 } 346 default: 347 bootinfo_msg = "unknown bootinfo version"; 348 goto nobootinfo; 349 } 350 } else { 351 bootinfo_msg = "boot program did not pass bootinfo"; 352 nobootinfo: 353 bootinfo.ssym = (u_long)_end; 354 bootinfo.esym = (u_long)_end; 355 bootinfo.hwrpb_phys = ((struct rpb *)HWRPB_ADDR)->rpb_phys; 356 bootinfo.hwrpb_size = ((struct rpb *)HWRPB_ADDR)->rpb_size; 357 init_prom_interface((struct rpb *)HWRPB_ADDR); 358 prom_getenv(PROM_E_BOOTED_OSFLAGS, bootinfo.boot_flags, 359 sizeof bootinfo.boot_flags); 360 prom_getenv(PROM_E_BOOTED_FILE, bootinfo.booted_kernel, 361 sizeof bootinfo.booted_kernel); 362 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 363 sizeof bootinfo.booted_dev); 364 } 365 366 /* 367 * Initialize the kernel's mapping of the RPB. It's needed for 368 * lots of things. 369 */ 370 hwrpb = (struct rpb *)ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys); 371 372 #if defined(DEC_3000_300) || defined(DEC_3000_500) 373 if (hwrpb->rpb_type == ST_DEC_3000_300 || 374 hwrpb->rpb_type == ST_DEC_3000_500) { 375 prom_getenv(PROM_E_SCSIID, dec_3000_scsiid, 376 sizeof(dec_3000_scsiid)); 377 prom_getenv(PROM_E_SCSIFAST, dec_3000_scsifast, 378 sizeof(dec_3000_scsifast)); 379 } 380 #endif 381 382 /* 383 * Remember how many cycles there are per microsecond, 384 * so that we can use delay(). Round up, for safety. 385 */ 386 cycles_per_usec = (hwrpb->rpb_cc_freq + 999999) / 1000000; 387 388 /* 389 * Initalize the (temporary) bootstrap console interface, so 390 * we can use printf until the VM system starts being setup. 391 * The real console is initialized before then. 392 */ 393 init_bootstrap_console(); 394 395 /* OUTPUT NOW ALLOWED */ 396 397 /* delayed from above */ 398 if (bootinfo_msg) 399 printf("WARNING: %s (0x%lx, 0x%lx, 0x%lx)\n", 400 bootinfo_msg, bim, bip, biv); 401 402 /* 403 * Point interrupt/exception vectors to our own. 404 */ 405 alpha_pal_wrent(XentInt, ALPHA_KENTRY_INT); 406 alpha_pal_wrent(XentArith, ALPHA_KENTRY_ARITH); 407 alpha_pal_wrent(XentMM, ALPHA_KENTRY_MM); 408 alpha_pal_wrent(XentIF, ALPHA_KENTRY_IF); 409 alpha_pal_wrent(XentUna, ALPHA_KENTRY_UNA); 410 alpha_pal_wrent(XentSys, ALPHA_KENTRY_SYS); 411 412 /* 413 * Clear pending machine checks and error reports, and enable 414 * system- and processor-correctable error reporting. 415 */ 416 alpha_pal_wrmces(alpha_pal_rdmces() & 417 ~(ALPHA_MCES_DSC|ALPHA_MCES_DPC)); 418 419 /* 420 * Find out what hardware we're on, and do basic initialization. 421 */ 422 cputype = hwrpb->rpb_type; 423 if (cputype >= ncpuinit) { 424 platform_not_supported(); 425 /* NOTREACHED */ 426 } 427 (*cpuinit[cputype].init)(); 428 strcpy(cpu_model, platform.model); 429 430 /* 431 * Initalize the real console, so the the bootstrap console is 432 * no longer necessary. 433 */ 434 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 435 if (!pmap_uses_prom_console()) 436 #endif 437 (*platform.cons_init)(); 438 439 #ifdef DIAGNOSTIC 440 /* Paranoid sanity checking */ 441 442 /* We should always be running on the the primary. */ 443 assert(hwrpb->rpb_primary_cpu_id == alpha_pal_whami()); 444 445 /* 446 * On single-CPU systypes, the primary should always be CPU 0, 447 * except on Alpha 8200 systems where the CPU id is related 448 * to the VID, which is related to the Turbo Laser node id. 449 */ 450 if (cputype != ST_DEC_21000) 451 assert(hwrpb->rpb_primary_cpu_id == 0); 452 #endif 453 454 /* NO MORE FIRMWARE ACCESS ALLOWED */ 455 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 456 /* 457 * XXX (unless _PMAP_MAY_USE_PROM_CONSOLE is defined and 458 * XXX pmap_uses_prom_console() evaluates to non-zero.) 459 */ 460 #endif 461 462 /* 463 * find out this system's page size 464 */ 465 PAGE_SIZE = hwrpb->rpb_page_size; 466 if (PAGE_SIZE != 8192) 467 panic("page size %d != 8192?!", PAGE_SIZE); 468 469 /* 470 * Initialize PAGE_SIZE-dependent variables. 471 */ 472 #if defined(UVM) 473 uvm_setpagesize(); 474 #else 475 vm_set_page_size(); 476 #endif 477 478 /* 479 * Find the beginning and end of the kernel (and leave a 480 * bit of space before the beginning for the bootstrap 481 * stack). 482 */ 483 kernstart = trunc_page(kernel_text) - 2 * PAGE_SIZE; 484 #ifdef DDB 485 ksym_start = (void *)bootinfo.ssym; 486 ksym_end = (void *)bootinfo.esym; 487 kernend = (vm_offset_t)round_page(ksym_end); 488 #else 489 kernend = (vm_offset_t)round_page(_end); 490 #endif 491 492 kernstartpfn = atop(ALPHA_K0SEG_TO_PHYS(kernstart)); 493 kernendpfn = atop(ALPHA_K0SEG_TO_PHYS(kernend)); 494 495 /* 496 * Find out how much memory is available, by looking at 497 * the memory cluster descriptors. This also tries to do 498 * its best to detect things things that have never been seen 499 * before... 500 */ 501 mddtp = (struct mddt *)(((caddr_t)hwrpb) + hwrpb->rpb_memdat_off); 502 503 /* MDDT SANITY CHECKING */ 504 mddtweird = 0; 505 if (mddtp->mddt_cluster_cnt < 2) { 506 mddtweird = 1; 507 printf("WARNING: weird number of mem clusters: %d\n", 508 mddtp->mddt_cluster_cnt); 509 } 510 511 #if 0 512 printf("Memory cluster count: %d\n", mddtp->mddt_cluster_cnt); 513 #endif 514 515 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 516 memc = &mddtp->mddt_clusters[i]; 517 #if 0 518 printf("MEMC %d: pfn 0x%lx cnt 0x%lx usage 0x%lx\n", i, 519 memc->mddt_pfn, memc->mddt_pg_cnt, memc->mddt_usage); 520 #endif 521 totalphysmem += memc->mddt_pg_cnt; 522 if (mem_cluster_cnt < VM_PHYSSEG_MAX) { /* XXX */ 523 mem_clusters[mem_cluster_cnt].start = 524 ptoa(memc->mddt_pfn); 525 mem_clusters[mem_cluster_cnt].size = 526 ptoa(memc->mddt_pg_cnt); 527 if (memc->mddt_usage & MDDT_mbz || 528 memc->mddt_usage & MDDT_NONVOLATILE || /* XXX */ 529 memc->mddt_usage & MDDT_PALCODE) 530 mem_clusters[mem_cluster_cnt].size |= 531 PROT_READ; 532 else 533 mem_clusters[mem_cluster_cnt].size |= 534 PROT_READ | PROT_WRITE | PROT_EXEC; 535 mem_cluster_cnt++; 536 } 537 538 if (memc->mddt_usage & MDDT_mbz) { 539 mddtweird = 1; 540 printf("WARNING: mem cluster %d has weird " 541 "usage 0x%lx\n", i, memc->mddt_usage); 542 unknownmem += memc->mddt_pg_cnt; 543 continue; 544 } 545 if (memc->mddt_usage & MDDT_NONVOLATILE) { 546 /* XXX should handle these... */ 547 printf("WARNING: skipping non-volatile mem " 548 "cluster %d\n", i); 549 unusedmem += memc->mddt_pg_cnt; 550 continue; 551 } 552 if (memc->mddt_usage & MDDT_PALCODE) { 553 resvmem += memc->mddt_pg_cnt; 554 continue; 555 } 556 557 /* 558 * We have a memory cluster available for system 559 * software use. We must determine if this cluster 560 * holds the kernel. 561 */ 562 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 563 /* 564 * XXX If the kernel uses the PROM console, we only use the 565 * XXX memory after the kernel in the first system segment, 566 * XXX to avoid clobbering prom mapping, data, etc. 567 */ 568 if (!pmap_uses_prom_console() || physmem == 0) { 569 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 570 physmem += memc->mddt_pg_cnt; 571 pfn0 = memc->mddt_pfn; 572 pfn1 = memc->mddt_pfn + memc->mddt_pg_cnt; 573 if (pfn0 <= kernstartpfn && kernendpfn <= pfn1) { 574 /* 575 * Must compute the location of the kernel 576 * within the segment. 577 */ 578 #if 0 579 printf("Cluster %d contains kernel\n", i); 580 #endif 581 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 582 if (!pmap_uses_prom_console()) { 583 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 584 if (pfn0 < kernstartpfn) { 585 /* 586 * There is a chunk before the kernel. 587 */ 588 #if 0 589 printf("Loading chunk before kernel: " 590 "0x%lx / 0x%lx\n", pfn0, kernstartpfn); 591 #endif 592 #if defined(UVM) 593 uvm_page_physload(pfn0, kernstartpfn, 594 pfn0, kernstartpfn); 595 #else 596 vm_page_physload(pfn0, kernstartpfn, 597 pfn0, kernstartpfn); 598 #endif 599 } 600 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 601 } 602 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 603 if (kernendpfn < pfn1) { 604 /* 605 * There is a chunk after the kernel. 606 */ 607 #if 0 608 printf("Loading chunk after kernel: " 609 "0x%lx / 0x%lx\n", kernendpfn, pfn1); 610 #endif 611 #if defined(UVM) 612 uvm_page_physload(kernendpfn, pfn1, 613 kernendpfn, pfn1); 614 #else 615 vm_page_physload(kernendpfn, pfn1, 616 kernendpfn, pfn1); 617 #endif 618 } 619 } else { 620 /* 621 * Just load this cluster as one chunk. 622 */ 623 #if 0 624 printf("Loading cluster %d: 0x%lx / 0x%lx\n", i, 625 pfn0, pfn1); 626 #endif 627 #if defined(UVM) 628 uvm_page_physload(pfn0, pfn1, pfn0, pfn1); 629 #else 630 vm_page_physload(pfn0, pfn1, pfn0, pfn1); 631 #endif 632 } 633 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 634 } 635 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 636 } 637 638 /* 639 * Dump out the MDDT if it looks odd... 640 */ 641 if (mddtweird) { 642 printf("\n"); 643 printf("complete memory cluster information:\n"); 644 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 645 printf("mddt %d:\n", i); 646 printf("\tpfn %lx\n", 647 mddtp->mddt_clusters[i].mddt_pfn); 648 printf("\tcnt %lx\n", 649 mddtp->mddt_clusters[i].mddt_pg_cnt); 650 printf("\ttest %lx\n", 651 mddtp->mddt_clusters[i].mddt_pg_test); 652 printf("\tbva %lx\n", 653 mddtp->mddt_clusters[i].mddt_v_bitaddr); 654 printf("\tbpa %lx\n", 655 mddtp->mddt_clusters[i].mddt_p_bitaddr); 656 printf("\tbcksum %lx\n", 657 mddtp->mddt_clusters[i].mddt_bit_cksum); 658 printf("\tusage %lx\n", 659 mddtp->mddt_clusters[i].mddt_usage); 660 } 661 printf("\n"); 662 } 663 664 if (totalphysmem == 0) 665 panic("can't happen: system seems to have no memory!"); 666 667 #ifdef LIMITMEM 668 /* 669 * XXX Kludge so we can run on machines with memory larger 670 * XXX than 1G until all device drivers are converted to 671 * XXX use bus_dma. (Relies on the fact that vm_physmem 672 * XXX sorted in order of increasing addresses.) 673 */ 674 if (vm_physmem[vm_nphysseg - 1].end > atop(LIMITMEM * 1024 * 1024)) { 675 676 printf("******** LIMITING MEMORY TO %dMB **********\n", 677 LIMITMEM); 678 679 do { 680 u_long ovf; 681 682 vps = &vm_physmem[vm_nphysseg - 1]; 683 684 if (vps->start >= atop(LIMITMEM * 1024 * 1024)) { 685 /* 686 * If the start is too high, just drop 687 * the whole segment. 688 * 689 * XXX can start != avail_start in this 690 * XXX case? wouldn't that mean that 691 * XXX some memory was stolen above the 692 * XXX limit? What to do? 693 */ 694 ovf = vps->end - vps->start; 695 vm_nphysseg--; 696 } else { 697 /* 698 * If the start is OK, calculate how much 699 * to drop and drop it. 700 */ 701 ovf = vps->end - atop(LIMITMEM * 1024 * 1024); 702 vps->end -= ovf; 703 vps->avail_end -= ovf; 704 } 705 physmem -= ovf; 706 unusedmem += ovf; 707 } while (vps->end > atop(LIMITMEM * 1024 * 1024)); 708 } 709 #endif /* LIMITMEM */ 710 711 maxmem = physmem; 712 713 #if 0 714 printf("totalphysmem = %d\n", totalphysmem); 715 printf("physmem = %d\n", physmem); 716 printf("resvmem = %d\n", resvmem); 717 printf("unusedmem = %d\n", unusedmem); 718 printf("unknownmem = %d\n", unknownmem); 719 #endif 720 721 /* 722 * Adjust some parameters if the amount of physmem 723 * available would cause us to croak. This is completely 724 * eyeballed and isn't meant to be the final answer. 725 * vm_phys_size is probably the only one to really worry 726 * about. 727 * 728 * It's for booting a GENERIC kernel on a large memory platform. 729 */ 730 if (physmem >= atop(128 * 1024 * 1024)) { 731 vm_mbuf_size <<= 1; 732 vm_kmem_size <<= 3; 733 vm_phys_size <<= 2; 734 } 735 736 /* 737 * Initialize error message buffer (at end of core). 738 */ 739 { 740 size_t sz = round_page(MSGBUFSIZE); 741 742 vps = &vm_physmem[vm_nphysseg - 1]; 743 744 /* shrink so that it'll fit in the last segment */ 745 if ((vps->avail_end - vps->avail_start) < atop(sz)) 746 sz = ptoa(vps->avail_end - vps->avail_start); 747 748 vps->end -= atop(sz); 749 vps->avail_end -= atop(sz); 750 msgbufaddr = (caddr_t) ALPHA_PHYS_TO_K0SEG(ptoa(vps->end)); 751 initmsgbuf(msgbufaddr, sz); 752 753 /* Remove the last segment if it now has no pages. */ 754 if (vps->start == vps->end) 755 vm_nphysseg--; 756 757 /* warn if the message buffer had to be shrunk */ 758 if (sz != round_page(MSGBUFSIZE)) 759 printf("WARNING: %d bytes not available for msgbuf in last cluster (%d used)\n", 760 round_page(MSGBUFSIZE), sz); 761 762 } 763 764 /* 765 * Init mapping for u page(s) for proc 0 766 */ 767 proc0.p_addr = proc0paddr = 768 (struct user *)pmap_steal_memory(UPAGES * PAGE_SIZE, NULL, NULL); 769 770 /* 771 * Allocate space for system data structures. These data structures 772 * are allocated here instead of cpu_startup() because physical 773 * memory is directly addressable. We don't have to map these into 774 * virtual address space. 775 */ 776 size = (vm_size_t)allocsys(0); 777 v = (caddr_t)pmap_steal_memory(size, NULL, NULL); 778 if ((allocsys(v) - v) != size) 779 panic("alpha_init: table size inconsistency"); 780 781 /* 782 * Initialize the virtual memory system, and set the 783 * page table base register in proc 0's PCB. 784 */ 785 pmap_bootstrap(ALPHA_PHYS_TO_K0SEG(ptb << PGSHIFT), 786 hwrpb->rpb_max_asn); 787 788 /* 789 * Initialize the rest of proc 0's PCB, and cache its physical 790 * address. 791 */ 792 proc0.p_md.md_pcbpaddr = 793 (struct pcb *)ALPHA_K0SEG_TO_PHYS((vm_offset_t)&proc0paddr->u_pcb); 794 795 /* 796 * Set the kernel sp, reserving space for an (empty) trapframe, 797 * and make proc0's trapframe pointer point to it for sanity. 798 */ 799 proc0paddr->u_pcb.pcb_hw.apcb_ksp = 800 (u_int64_t)proc0paddr + USPACE - sizeof(struct trapframe); 801 proc0.p_md.md_tf = 802 (struct trapframe *)proc0paddr->u_pcb.pcb_hw.apcb_ksp; 803 804 /* 805 * Look at arguments passed to us and compute boothowto. 806 */ 807 808 boothowto = RB_SINGLE; 809 #ifdef KADB 810 boothowto |= RB_KDB; 811 #endif 812 for (p = bootinfo.boot_flags; p && *p != '\0'; p++) { 813 /* 814 * Note that we'd really like to differentiate case here, 815 * but the Alpha AXP Architecture Reference Manual 816 * says that we shouldn't. 817 */ 818 switch (*p) { 819 case 'a': /* autoboot */ 820 case 'A': 821 boothowto &= ~RB_SINGLE; 822 break; 823 824 #ifdef DEBUG 825 case 'c': /* crash dump immediately after autoconfig */ 826 case 'C': 827 boothowto |= RB_DUMP; 828 break; 829 #endif 830 831 #if defined(KGDB) || defined(DDB) 832 case 'd': /* break into the kernel debugger ASAP */ 833 case 'D': 834 boothowto |= RB_KDB; 835 break; 836 #endif 837 838 case 'h': /* always halt, never reboot */ 839 case 'H': 840 boothowto |= RB_HALT; 841 break; 842 843 #if 0 844 case 'm': /* mini root present in memory */ 845 case 'M': 846 boothowto |= RB_MINIROOT; 847 break; 848 #endif 849 850 case 'n': /* askname */ 851 case 'N': 852 boothowto |= RB_ASKNAME; 853 break; 854 855 case 's': /* single-user (default, supported for sanity) */ 856 case 'S': 857 boothowto |= RB_SINGLE; 858 break; 859 860 case '-': 861 /* 862 * Just ignore this. It's not required, but it's 863 * common for it to be passed regardless. 864 */ 865 break; 866 867 default: 868 printf("Unrecognized boot flag '%c'.\n", *p); 869 break; 870 } 871 } 872 873 /* 874 * Initialize debuggers, and break into them if appropriate. 875 */ 876 #ifdef DDB 877 db_machine_init(); 878 ddb_init(ksym_start, ksym_end); 879 if (boothowto & RB_KDB) 880 Debugger(); 881 #endif 882 #ifdef KGDB 883 if (boothowto & RB_KDB) 884 kgdb_connect(0); 885 #endif 886 887 /* 888 * Figure out the number of cpus in the box, from RPB fields. 889 * Really. We mean it. 890 */ 891 for (i = 0; i < hwrpb->rpb_pcs_cnt; i++) { 892 struct pcs *pcsp; 893 894 pcsp = LOCATE_PCS(hwrpb, i); 895 if ((pcsp->pcs_flags & PCS_PP) != 0) 896 ncpus++; 897 } 898 899 /* 900 * Figure out our clock frequency, from RPB fields. 901 */ 902 hz = hwrpb->rpb_intr_freq >> 12; 903 if (!(60 <= hz && hz <= 10240)) { 904 hz = 1024; 905 #ifdef DIAGNOSTIC 906 printf("WARNING: unbelievable rpb_intr_freq: %ld (%d hz)\n", 907 hwrpb->rpb_intr_freq, hz); 908 #endif 909 } 910 911 } 912 913 /* 914 * Allocate space for system data structures. We are given 915 * a starting virtual address and we return a final virtual 916 * address; along the way we set each data structure pointer. 917 * 918 * We call allocsys() with 0 to find out how much space we want, 919 * allocate that much and fill it with zeroes, and the call 920 * allocsys() again with the correct base virtual address. 921 */ 922 caddr_t 923 allocsys(v) 924 caddr_t v; 925 { 926 927 #define valloc(name, type, num) \ 928 (name) = (type *)v; v = (caddr_t)ALIGN((name)+(num)) 929 #ifdef REAL_CLISTS 930 valloc(cfree, struct cblock, nclist); 931 #endif 932 valloc(callout, struct callout, ncallout); 933 #ifdef SYSVSHM 934 valloc(shmsegs, struct shmid_ds, shminfo.shmmni); 935 #endif 936 #ifdef SYSVSEM 937 valloc(sema, struct semid_ds, seminfo.semmni); 938 valloc(sem, struct sem, seminfo.semmns); 939 /* This is pretty disgusting! */ 940 valloc(semu, int, (seminfo.semmnu * seminfo.semusz) / sizeof(int)); 941 #endif 942 #ifdef SYSVMSG 943 valloc(msgpool, char, msginfo.msgmax); 944 valloc(msgmaps, struct msgmap, msginfo.msgseg); 945 valloc(msghdrs, struct msg, msginfo.msgtql); 946 valloc(msqids, struct msqid_ds, msginfo.msgmni); 947 #endif 948 949 /* 950 * Determine how many buffers to allocate. 951 * We allocate 10% of memory for buffer space. Insure a 952 * minimum of 16 buffers. We allocate 1/2 as many swap buffer 953 * headers as file i/o buffers. 954 */ 955 if (bufpages == 0) 956 bufpages = (physmem * 10) / (CLSIZE * 100); 957 if (nbuf == 0) { 958 nbuf = bufpages; 959 if (nbuf < 16) 960 nbuf = 16; 961 } 962 if (nswbuf == 0) { 963 nswbuf = (nbuf / 2) &~ 1; /* force even */ 964 if (nswbuf > 256) 965 nswbuf = 256; /* sanity */ 966 } 967 #if !defined(UVM) 968 valloc(swbuf, struct buf, nswbuf); 969 #endif 970 valloc(buf, struct buf, nbuf); 971 return (v); 972 #undef valloc 973 } 974 975 void 976 consinit() 977 { 978 979 /* 980 * Everything related to console initialization is done 981 * in alpha_init(). 982 */ 983 #if defined(DIAGNOSTIC) && defined(_PMAP_MAY_USE_PROM_CONSOLE) 984 printf("consinit: %susing prom console\n", 985 pmap_uses_prom_console() ? "" : "not "); 986 #endif 987 } 988 989 #include "pckbc.h" 990 #include "pckbd.h" 991 #if (NPCKBC > 0) && (NPCKBD == 0) 992 993 #include <machine/bus.h> 994 #include <dev/isa/pckbcvar.h> 995 996 /* 997 * This is called by the pbkbc driver if no pckbd is configured. 998 * On the i386, it is used to glue in the old, deprecated console 999 * code. On the Alpha, it does nothing. 1000 */ 1001 int 1002 pckbc_machdep_cnattach(kbctag, kbcslot) 1003 pckbc_tag_t kbctag; 1004 pckbc_slot_t kbcslot; 1005 { 1006 1007 return (ENXIO); 1008 } 1009 #endif /* NPCKBC > 0 && NPCKBD == 0 */ 1010 1011 void 1012 cpu_startup() 1013 { 1014 register unsigned i; 1015 int base, residual; 1016 vm_offset_t minaddr, maxaddr; 1017 vm_size_t size; 1018 #if defined(DEBUG) 1019 extern int pmapdebug; 1020 int opmapdebug = pmapdebug; 1021 1022 pmapdebug = 0; 1023 #endif 1024 1025 /* 1026 * Good {morning,afternoon,evening,night}. 1027 */ 1028 printf(version); 1029 identifycpu(); 1030 printf("real mem = %lu (%lu reserved for PROM, %lu used by NetBSD)\n", 1031 ptoa(totalphysmem), ptoa(resvmem), ptoa(physmem)); 1032 if (unusedmem) 1033 printf("WARNING: unused memory = %d bytes\n", ctob(unusedmem)); 1034 if (unknownmem) 1035 printf("WARNING: %d bytes of memory with unknown purpose\n", 1036 ctob(unknownmem)); 1037 1038 /* 1039 * Allocate virtual address space for file I/O buffers. 1040 * Note they are different than the array of headers, 'buf', 1041 * and usually occupy more virtual memory than physical. 1042 */ 1043 size = MAXBSIZE * nbuf; 1044 #if defined(UVM) 1045 if (uvm_map(kernel_map, (vm_offset_t *) &buffers, round_page(size), 1046 NULL, UVM_UNKNOWN_OFFSET, 1047 UVM_MAPFLAG(UVM_PROT_NONE, UVM_PROT_NONE, UVM_INH_NONE, 1048 UVM_ADV_NORMAL, 0)) != KERN_SUCCESS) 1049 panic("startup: cannot allocate VM for buffers"); 1050 #else 1051 buffer_map = kmem_suballoc(kernel_map, (vm_offset_t *)&buffers, 1052 &maxaddr, size, TRUE); 1053 minaddr = (vm_offset_t)buffers; 1054 if (vm_map_find(buffer_map, vm_object_allocate(size), (vm_offset_t)0, 1055 &minaddr, size, FALSE) != KERN_SUCCESS) 1056 panic("startup: cannot allocate buffers"); 1057 #endif /* UVM */ 1058 base = bufpages / nbuf; 1059 residual = bufpages % nbuf; 1060 for (i = 0; i < nbuf; i++) { 1061 #if defined(UVM) 1062 vm_size_t curbufsize; 1063 vm_offset_t curbuf; 1064 struct vm_page *pg; 1065 1066 /* 1067 * Each buffer has MAXBSIZE bytes of VM space allocated. Of 1068 * that MAXBSIZE space, we allocate and map (base+1) pages 1069 * for the first "residual" buffers, and then we allocate 1070 * "base" pages for the rest. 1071 */ 1072 curbuf = (vm_offset_t) buffers + (i * MAXBSIZE); 1073 curbufsize = CLBYTES * ((i < residual) ? (base+1) : base); 1074 1075 while (curbufsize) { 1076 pg = uvm_pagealloc(NULL, 0, NULL); 1077 if (pg == NULL) 1078 panic("cpu_startup: not enough memory for " 1079 "buffer cache"); 1080 #if defined(PMAP_NEW) 1081 pmap_kenter_pgs(curbuf, &pg, 1); 1082 #else 1083 pmap_enter(kernel_map->pmap, curbuf, 1084 VM_PAGE_TO_PHYS(pg), VM_PROT_ALL, TRUE); 1085 #endif 1086 curbuf += PAGE_SIZE; 1087 curbufsize -= PAGE_SIZE; 1088 } 1089 #else /* ! UVM */ 1090 vm_size_t curbufsize; 1091 vm_offset_t curbuf; 1092 1093 /* 1094 * First <residual> buffers get (base+1) physical pages 1095 * allocated for them. The rest get (base) physical pages. 1096 * 1097 * The rest of each buffer occupies virtual space, 1098 * but has no physical memory allocated for it. 1099 */ 1100 curbuf = (vm_offset_t)buffers + i * MAXBSIZE; 1101 curbufsize = CLBYTES * (i < residual ? base+1 : base); 1102 vm_map_pageable(buffer_map, curbuf, curbuf+curbufsize, FALSE); 1103 vm_map_simplify(buffer_map, curbuf); 1104 #endif /* UVM */ 1105 } 1106 /* 1107 * Allocate a submap for exec arguments. This map effectively 1108 * limits the number of processes exec'ing at any time. 1109 */ 1110 #if defined(UVM) 1111 exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 1112 16 * NCARGS, TRUE, FALSE, NULL); 1113 #else 1114 exec_map = kmem_suballoc(kernel_map, &minaddr, &maxaddr, 1115 16 * NCARGS, TRUE); 1116 #endif 1117 1118 /* 1119 * Allocate a submap for physio 1120 */ 1121 #if defined(UVM) 1122 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 1123 VM_PHYS_SIZE, TRUE, FALSE, NULL); 1124 #else 1125 phys_map = kmem_suballoc(kernel_map, &minaddr, &maxaddr, 1126 VM_PHYS_SIZE, TRUE); 1127 #endif 1128 1129 /* 1130 * Finally, allocate mbuf cluster submap. 1131 */ 1132 #if defined(UVM) 1133 mb_map = uvm_km_suballoc(kernel_map, (vm_offset_t *)&mbutl, &maxaddr, 1134 VM_MBUF_SIZE, FALSE, FALSE, NULL); 1135 #else 1136 mb_map = kmem_suballoc(kernel_map, (vm_offset_t *)&mbutl, &maxaddr, 1137 VM_MBUF_SIZE, FALSE); 1138 #endif 1139 /* 1140 * Initialize callouts 1141 */ 1142 callfree = callout; 1143 for (i = 1; i < ncallout; i++) 1144 callout[i-1].c_next = &callout[i]; 1145 callout[i-1].c_next = NULL; 1146 1147 #if defined(DEBUG) 1148 pmapdebug = opmapdebug; 1149 #endif 1150 #if defined(UVM) 1151 printf("avail mem = %ld\n", (long)ptoa(uvmexp.free)); 1152 #else 1153 printf("avail mem = %ld\n", (long)ptoa(cnt.v_free_count)); 1154 #endif 1155 printf("using %ld buffers containing %ld bytes of memory\n", 1156 (long)nbuf, (long)(bufpages * CLBYTES)); 1157 1158 /* 1159 * Set up buffers, so they can be used to read disk labels. 1160 */ 1161 bufinit(); 1162 1163 /* 1164 * Configure the system. 1165 */ 1166 configure(); 1167 1168 /* 1169 * Note that bootstrapping is finished, and set the HWRPB up 1170 * to do restarts. 1171 */ 1172 hwrpb_restart_setup(); 1173 } 1174 1175 /* 1176 * Retrieve the platform name from the DSR. 1177 */ 1178 const char * 1179 alpha_dsr_sysname() 1180 { 1181 struct dsrdb *dsr; 1182 const char *sysname; 1183 1184 /* 1185 * DSR does not exist on early HWRPB versions. 1186 */ 1187 if (hwrpb->rpb_version < HWRPB_DSRDB_MINVERS) 1188 return (NULL); 1189 1190 dsr = (struct dsrdb *)(((caddr_t)hwrpb) + hwrpb->rpb_dsrdb_off); 1191 sysname = (const char *)((caddr_t)dsr + (dsr->dsr_sysname_off + 1192 sizeof(u_int64_t))); 1193 return (sysname); 1194 } 1195 1196 /* 1197 * Lookup the system specified system variation in the provided table, 1198 * returning the model string on match. 1199 */ 1200 const char * 1201 alpha_variation_name(variation, avtp) 1202 u_int64_t variation; 1203 const struct alpha_variation_table *avtp; 1204 { 1205 int i; 1206 1207 for (i = 0; avtp[i].avt_model != NULL; i++) 1208 if (avtp[i].avt_variation == variation) 1209 return (avtp[i].avt_model); 1210 return (NULL); 1211 } 1212 1213 /* 1214 * Generate a default platform name based for unknown system variations. 1215 */ 1216 const char * 1217 alpha_unknown_sysname() 1218 { 1219 static char s[128]; /* safe size */ 1220 1221 sprintf(s, "%s family, unknown model variation 0x%lx", 1222 platform.family, hwrpb->rpb_variation & SV_ST_MASK); 1223 return ((const char *)s); 1224 } 1225 1226 void 1227 identifycpu() 1228 { 1229 1230 /* 1231 * print out CPU identification information. 1232 */ 1233 printf("%s, %ldMHz\n", cpu_model, 1234 hwrpb->rpb_cc_freq / 1000000); /* XXX true for 21164? */ 1235 printf("%ld byte page size, %d processor%s.\n", 1236 hwrpb->rpb_page_size, ncpus, ncpus == 1 ? "" : "s"); 1237 #if 0 1238 /* this isn't defined for any systems that we run on? */ 1239 printf("serial number 0x%lx 0x%lx\n", 1240 ((long *)hwrpb->rpb_ssn)[0], ((long *)hwrpb->rpb_ssn)[1]); 1241 1242 /* and these aren't particularly useful! */ 1243 printf("variation: 0x%lx, revision 0x%lx\n", 1244 hwrpb->rpb_variation, *(long *)hwrpb->rpb_revision); 1245 #endif 1246 } 1247 1248 int waittime = -1; 1249 struct pcb dumppcb; 1250 1251 void 1252 cpu_reboot(howto, bootstr) 1253 int howto; 1254 char *bootstr; 1255 { 1256 extern int cold; 1257 1258 /* If system is cold, just halt. */ 1259 if (cold) { 1260 howto |= RB_HALT; 1261 goto haltsys; 1262 } 1263 1264 /* If "always halt" was specified as a boot flag, obey. */ 1265 if ((boothowto & RB_HALT) != 0) 1266 howto |= RB_HALT; 1267 1268 boothowto = howto; 1269 if ((howto & RB_NOSYNC) == 0 && waittime < 0) { 1270 waittime = 0; 1271 vfs_shutdown(); 1272 /* 1273 * If we've been adjusting the clock, the todr 1274 * will be out of synch; adjust it now. 1275 */ 1276 resettodr(); 1277 } 1278 1279 /* Disable interrupts. */ 1280 splhigh(); 1281 1282 /* If rebooting and a dump is requested do it. */ 1283 #if 0 1284 if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP) 1285 #else 1286 if (howto & RB_DUMP) 1287 #endif 1288 dumpsys(); 1289 1290 haltsys: 1291 1292 /* run any shutdown hooks */ 1293 doshutdownhooks(); 1294 1295 #ifdef BOOTKEY 1296 printf("hit any key to %s...\n", howto & RB_HALT ? "halt" : "reboot"); 1297 cnpollc(1); /* for proper keyboard command handling */ 1298 cngetc(); 1299 cnpollc(0); 1300 printf("\n"); 1301 #endif 1302 1303 /* Finally, powerdown/halt/reboot the system. */ 1304 if ((howto && RB_POWERDOWN) == RB_POWERDOWN && 1305 platform.powerdown != NULL) { 1306 (*platform.powerdown)(); 1307 printf("WARNING: powerdown failed!\n"); 1308 } 1309 printf("%s\n\n", howto & RB_HALT ? "halted." : "rebooting..."); 1310 prom_halt(howto & RB_HALT); 1311 /*NOTREACHED*/ 1312 } 1313 1314 /* 1315 * These variables are needed by /sbin/savecore 1316 */ 1317 u_long dumpmag = 0x8fca0101; /* magic number */ 1318 int dumpsize = 0; /* pages */ 1319 long dumplo = 0; /* blocks */ 1320 1321 /* 1322 * cpu_dumpsize: calculate size of machine-dependent kernel core dump headers. 1323 */ 1324 int 1325 cpu_dumpsize() 1326 { 1327 int size; 1328 1329 size = ALIGN(sizeof(kcore_seg_t)) + ALIGN(sizeof(cpu_kcore_hdr_t)) + 1330 ALIGN(mem_cluster_cnt * sizeof(phys_ram_seg_t)); 1331 if (roundup(size, dbtob(1)) != dbtob(1)) 1332 return -1; 1333 1334 return (1); 1335 } 1336 1337 /* 1338 * cpu_dump_mempagecnt: calculate size of RAM (in pages) to be dumped. 1339 */ 1340 u_long 1341 cpu_dump_mempagecnt() 1342 { 1343 u_long i, n; 1344 1345 n = 0; 1346 for (i = 0; i < mem_cluster_cnt; i++) 1347 n += atop(mem_clusters[i].size); 1348 return (n); 1349 } 1350 1351 /* 1352 * cpu_dump: dump machine-dependent kernel core dump headers. 1353 */ 1354 int 1355 cpu_dump() 1356 { 1357 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1358 char buf[dbtob(1)]; 1359 kcore_seg_t *segp; 1360 cpu_kcore_hdr_t *cpuhdrp; 1361 phys_ram_seg_t *memsegp; 1362 int i; 1363 1364 dump = bdevsw[major(dumpdev)].d_dump; 1365 1366 bzero(buf, sizeof buf); 1367 segp = (kcore_seg_t *)buf; 1368 cpuhdrp = (cpu_kcore_hdr_t *)&buf[ALIGN(sizeof(*segp))]; 1369 memsegp = (phys_ram_seg_t *)&buf[ ALIGN(sizeof(*segp)) + 1370 ALIGN(sizeof(*cpuhdrp))]; 1371 1372 /* 1373 * Generate a segment header. 1374 */ 1375 CORE_SETMAGIC(*segp, KCORE_MAGIC, MID_MACHINE, CORE_CPU); 1376 segp->c_size = dbtob(1) - ALIGN(sizeof(*segp)); 1377 1378 /* 1379 * Add the machine-dependent header info. 1380 */ 1381 cpuhdrp->lev1map_pa = ALPHA_K0SEG_TO_PHYS((vm_offset_t)kernel_lev1map); 1382 cpuhdrp->page_size = PAGE_SIZE; 1383 cpuhdrp->nmemsegs = mem_cluster_cnt; 1384 1385 /* 1386 * Fill in the memory segment descriptors. 1387 */ 1388 for (i = 0; i < mem_cluster_cnt; i++) { 1389 memsegp[i].start = mem_clusters[i].start; 1390 memsegp[i].size = mem_clusters[i].size & ~PAGE_MASK; 1391 } 1392 1393 return (dump(dumpdev, dumplo, (caddr_t)buf, dbtob(1))); 1394 } 1395 1396 /* 1397 * This is called by main to set dumplo and dumpsize. 1398 * Dumps always skip the first CLBYTES of disk space 1399 * in case there might be a disk label stored there. 1400 * If there is extra space, put dump at the end to 1401 * reduce the chance that swapping trashes it. 1402 */ 1403 void 1404 cpu_dumpconf() 1405 { 1406 int nblks, dumpblks; /* size of dump area */ 1407 int maj; 1408 1409 if (dumpdev == NODEV) 1410 goto bad; 1411 maj = major(dumpdev); 1412 if (maj < 0 || maj >= nblkdev) 1413 panic("dumpconf: bad dumpdev=0x%x", dumpdev); 1414 if (bdevsw[maj].d_psize == NULL) 1415 goto bad; 1416 nblks = (*bdevsw[maj].d_psize)(dumpdev); 1417 if (nblks <= ctod(1)) 1418 goto bad; 1419 1420 dumpblks = cpu_dumpsize(); 1421 if (dumpblks < 0) 1422 goto bad; 1423 dumpblks += ctod(cpu_dump_mempagecnt()); 1424 1425 /* If dump won't fit (incl. room for possible label), punt. */ 1426 if (dumpblks > (nblks - ctod(1))) 1427 goto bad; 1428 1429 /* Put dump at end of partition */ 1430 dumplo = nblks - dumpblks; 1431 1432 /* dumpsize is in page units, and doesn't include headers. */ 1433 dumpsize = cpu_dump_mempagecnt(); 1434 return; 1435 1436 bad: 1437 dumpsize = 0; 1438 return; 1439 } 1440 1441 /* 1442 * Dump the kernel's image to the swap partition. 1443 */ 1444 #define BYTES_PER_DUMP NBPG 1445 1446 void 1447 dumpsys() 1448 { 1449 u_long totalbytesleft, bytes, i, n, memcl; 1450 u_long maddr; 1451 int psize; 1452 daddr_t blkno; 1453 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1454 int error; 1455 1456 /* Save registers. */ 1457 savectx(&dumppcb); 1458 1459 msgbufenabled = 0; /* don't record dump msgs in msgbuf */ 1460 if (dumpdev == NODEV) 1461 return; 1462 1463 /* 1464 * For dumps during autoconfiguration, 1465 * if dump device has already configured... 1466 */ 1467 if (dumpsize == 0) 1468 cpu_dumpconf(); 1469 if (dumplo <= 0) { 1470 printf("\ndump to dev %u,%u not possible\n", major(dumpdev), 1471 minor(dumpdev)); 1472 return; 1473 } 1474 printf("\ndumping to dev %u,%u offset %ld\n", major(dumpdev), 1475 minor(dumpdev), dumplo); 1476 1477 psize = (*bdevsw[major(dumpdev)].d_psize)(dumpdev); 1478 printf("dump "); 1479 if (psize == -1) { 1480 printf("area unavailable\n"); 1481 return; 1482 } 1483 1484 /* XXX should purge all outstanding keystrokes. */ 1485 1486 if ((error = cpu_dump()) != 0) 1487 goto err; 1488 1489 totalbytesleft = ptoa(cpu_dump_mempagecnt()); 1490 blkno = dumplo + cpu_dumpsize(); 1491 dump = bdevsw[major(dumpdev)].d_dump; 1492 error = 0; 1493 1494 for (memcl = 0; memcl < mem_cluster_cnt; memcl++) { 1495 maddr = mem_clusters[memcl].start; 1496 bytes = mem_clusters[memcl].size & ~PAGE_MASK; 1497 1498 for (i = 0; i < bytes; i += n, totalbytesleft -= n) { 1499 1500 /* Print out how many MBs we to go. */ 1501 if ((totalbytesleft % (1024*1024)) == 0) 1502 printf("%d ", totalbytesleft / (1024 * 1024)); 1503 1504 /* Limit size for next transfer. */ 1505 n = bytes - i; 1506 if (n > BYTES_PER_DUMP) 1507 n = BYTES_PER_DUMP; 1508 1509 error = (*dump)(dumpdev, blkno, 1510 (caddr_t)ALPHA_PHYS_TO_K0SEG(maddr), n); 1511 if (error) 1512 goto err; 1513 maddr += n; 1514 blkno += btodb(n); /* XXX? */ 1515 1516 /* XXX should look for keystrokes, to cancel. */ 1517 } 1518 } 1519 1520 err: 1521 switch (error) { 1522 1523 case ENXIO: 1524 printf("device bad\n"); 1525 break; 1526 1527 case EFAULT: 1528 printf("device not ready\n"); 1529 break; 1530 1531 case EINVAL: 1532 printf("area improper\n"); 1533 break; 1534 1535 case EIO: 1536 printf("i/o error\n"); 1537 break; 1538 1539 case EINTR: 1540 printf("aborted from console\n"); 1541 break; 1542 1543 case 0: 1544 printf("succeeded\n"); 1545 break; 1546 1547 default: 1548 printf("error %d\n", error); 1549 break; 1550 } 1551 printf("\n\n"); 1552 delay(1000); 1553 } 1554 1555 void 1556 frametoreg(framep, regp) 1557 struct trapframe *framep; 1558 struct reg *regp; 1559 { 1560 1561 regp->r_regs[R_V0] = framep->tf_regs[FRAME_V0]; 1562 regp->r_regs[R_T0] = framep->tf_regs[FRAME_T0]; 1563 regp->r_regs[R_T1] = framep->tf_regs[FRAME_T1]; 1564 regp->r_regs[R_T2] = framep->tf_regs[FRAME_T2]; 1565 regp->r_regs[R_T3] = framep->tf_regs[FRAME_T3]; 1566 regp->r_regs[R_T4] = framep->tf_regs[FRAME_T4]; 1567 regp->r_regs[R_T5] = framep->tf_regs[FRAME_T5]; 1568 regp->r_regs[R_T6] = framep->tf_regs[FRAME_T6]; 1569 regp->r_regs[R_T7] = framep->tf_regs[FRAME_T7]; 1570 regp->r_regs[R_S0] = framep->tf_regs[FRAME_S0]; 1571 regp->r_regs[R_S1] = framep->tf_regs[FRAME_S1]; 1572 regp->r_regs[R_S2] = framep->tf_regs[FRAME_S2]; 1573 regp->r_regs[R_S3] = framep->tf_regs[FRAME_S3]; 1574 regp->r_regs[R_S4] = framep->tf_regs[FRAME_S4]; 1575 regp->r_regs[R_S5] = framep->tf_regs[FRAME_S5]; 1576 regp->r_regs[R_S6] = framep->tf_regs[FRAME_S6]; 1577 regp->r_regs[R_A0] = framep->tf_regs[FRAME_A0]; 1578 regp->r_regs[R_A1] = framep->tf_regs[FRAME_A1]; 1579 regp->r_regs[R_A2] = framep->tf_regs[FRAME_A2]; 1580 regp->r_regs[R_A3] = framep->tf_regs[FRAME_A3]; 1581 regp->r_regs[R_A4] = framep->tf_regs[FRAME_A4]; 1582 regp->r_regs[R_A5] = framep->tf_regs[FRAME_A5]; 1583 regp->r_regs[R_T8] = framep->tf_regs[FRAME_T8]; 1584 regp->r_regs[R_T9] = framep->tf_regs[FRAME_T9]; 1585 regp->r_regs[R_T10] = framep->tf_regs[FRAME_T10]; 1586 regp->r_regs[R_T11] = framep->tf_regs[FRAME_T11]; 1587 regp->r_regs[R_RA] = framep->tf_regs[FRAME_RA]; 1588 regp->r_regs[R_T12] = framep->tf_regs[FRAME_T12]; 1589 regp->r_regs[R_AT] = framep->tf_regs[FRAME_AT]; 1590 regp->r_regs[R_GP] = framep->tf_regs[FRAME_GP]; 1591 /* regp->r_regs[R_SP] = framep->tf_regs[FRAME_SP]; XXX */ 1592 regp->r_regs[R_ZERO] = 0; 1593 } 1594 1595 void 1596 regtoframe(regp, framep) 1597 struct reg *regp; 1598 struct trapframe *framep; 1599 { 1600 1601 framep->tf_regs[FRAME_V0] = regp->r_regs[R_V0]; 1602 framep->tf_regs[FRAME_T0] = regp->r_regs[R_T0]; 1603 framep->tf_regs[FRAME_T1] = regp->r_regs[R_T1]; 1604 framep->tf_regs[FRAME_T2] = regp->r_regs[R_T2]; 1605 framep->tf_regs[FRAME_T3] = regp->r_regs[R_T3]; 1606 framep->tf_regs[FRAME_T4] = regp->r_regs[R_T4]; 1607 framep->tf_regs[FRAME_T5] = regp->r_regs[R_T5]; 1608 framep->tf_regs[FRAME_T6] = regp->r_regs[R_T6]; 1609 framep->tf_regs[FRAME_T7] = regp->r_regs[R_T7]; 1610 framep->tf_regs[FRAME_S0] = regp->r_regs[R_S0]; 1611 framep->tf_regs[FRAME_S1] = regp->r_regs[R_S1]; 1612 framep->tf_regs[FRAME_S2] = regp->r_regs[R_S2]; 1613 framep->tf_regs[FRAME_S3] = regp->r_regs[R_S3]; 1614 framep->tf_regs[FRAME_S4] = regp->r_regs[R_S4]; 1615 framep->tf_regs[FRAME_S5] = regp->r_regs[R_S5]; 1616 framep->tf_regs[FRAME_S6] = regp->r_regs[R_S6]; 1617 framep->tf_regs[FRAME_A0] = regp->r_regs[R_A0]; 1618 framep->tf_regs[FRAME_A1] = regp->r_regs[R_A1]; 1619 framep->tf_regs[FRAME_A2] = regp->r_regs[R_A2]; 1620 framep->tf_regs[FRAME_A3] = regp->r_regs[R_A3]; 1621 framep->tf_regs[FRAME_A4] = regp->r_regs[R_A4]; 1622 framep->tf_regs[FRAME_A5] = regp->r_regs[R_A5]; 1623 framep->tf_regs[FRAME_T8] = regp->r_regs[R_T8]; 1624 framep->tf_regs[FRAME_T9] = regp->r_regs[R_T9]; 1625 framep->tf_regs[FRAME_T10] = regp->r_regs[R_T10]; 1626 framep->tf_regs[FRAME_T11] = regp->r_regs[R_T11]; 1627 framep->tf_regs[FRAME_RA] = regp->r_regs[R_RA]; 1628 framep->tf_regs[FRAME_T12] = regp->r_regs[R_T12]; 1629 framep->tf_regs[FRAME_AT] = regp->r_regs[R_AT]; 1630 framep->tf_regs[FRAME_GP] = regp->r_regs[R_GP]; 1631 /* framep->tf_regs[FRAME_SP] = regp->r_regs[R_SP]; XXX */ 1632 /* ??? = regp->r_regs[R_ZERO]; */ 1633 } 1634 1635 void 1636 printregs(regp) 1637 struct reg *regp; 1638 { 1639 int i; 1640 1641 for (i = 0; i < 32; i++) 1642 printf("R%d:\t0x%016lx%s", i, regp->r_regs[i], 1643 i & 1 ? "\n" : "\t"); 1644 } 1645 1646 void 1647 regdump(framep) 1648 struct trapframe *framep; 1649 { 1650 struct reg reg; 1651 1652 frametoreg(framep, ®); 1653 reg.r_regs[R_SP] = alpha_pal_rdusp(); 1654 1655 printf("REGISTERS:\n"); 1656 printregs(®); 1657 } 1658 1659 #ifdef DEBUG 1660 int sigdebug = 0; 1661 int sigpid = 0; 1662 #define SDB_FOLLOW 0x01 1663 #define SDB_KSTACK 0x02 1664 #endif 1665 1666 /* 1667 * Send an interrupt to process. 1668 */ 1669 void 1670 sendsig(catcher, sig, mask, code) 1671 sig_t catcher; 1672 int sig, mask; 1673 u_long code; 1674 { 1675 struct proc *p = curproc; 1676 struct sigcontext *scp, ksc; 1677 struct trapframe *frame; 1678 struct sigacts *psp = p->p_sigacts; 1679 int oonstack, fsize, rndfsize; 1680 extern char sigcode[], esigcode[]; 1681 extern struct proc *fpcurproc; 1682 1683 frame = p->p_md.md_tf; 1684 oonstack = psp->ps_sigstk.ss_flags & SS_ONSTACK; 1685 fsize = sizeof ksc; 1686 rndfsize = ((fsize + 15) / 16) * 16; 1687 /* 1688 * Allocate and validate space for the signal handler 1689 * context. Note that if the stack is in P0 space, the 1690 * call to grow() is a nop, and the useracc() check 1691 * will fail if the process has not already allocated 1692 * the space with a `brk'. 1693 */ 1694 if ((psp->ps_flags & SAS_ALTSTACK) && !oonstack && 1695 (psp->ps_sigonstack & sigmask(sig))) { 1696 scp = (struct sigcontext *)((caddr_t)psp->ps_sigstk.ss_sp + 1697 psp->ps_sigstk.ss_size - rndfsize); 1698 psp->ps_sigstk.ss_flags |= SS_ONSTACK; 1699 } else 1700 scp = (struct sigcontext *)(alpha_pal_rdusp() - rndfsize); 1701 if ((u_long)scp <= USRSTACK - ctob(p->p_vmspace->vm_ssize)) 1702 #if defined(UVM) 1703 (void)uvm_grow(p, (u_long)scp); 1704 #else 1705 (void)grow(p, (u_long)scp); 1706 #endif 1707 #ifdef DEBUG 1708 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1709 printf("sendsig(%d): sig %d ssp %p usp %p\n", p->p_pid, 1710 sig, &oonstack, scp); 1711 #endif 1712 #if defined(UVM) 1713 if (uvm_useracc((caddr_t)scp, fsize, B_WRITE) == 0) { 1714 #else 1715 if (useracc((caddr_t)scp, fsize, B_WRITE) == 0) { 1716 #endif 1717 #ifdef DEBUG 1718 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1719 printf("sendsig(%d): useracc failed on sig %d\n", 1720 p->p_pid, sig); 1721 #endif 1722 /* 1723 * Process has trashed its stack; give it an illegal 1724 * instruction to halt it in its tracks. 1725 */ 1726 SIGACTION(p, SIGILL) = SIG_DFL; 1727 sig = sigmask(SIGILL); 1728 p->p_sigignore &= ~sig; 1729 p->p_sigcatch &= ~sig; 1730 p->p_sigmask &= ~sig; 1731 psignal(p, SIGILL); 1732 return; 1733 #if !defined(UVM) /* this construct will balance braces for ctags(1) */ 1734 } 1735 #else 1736 } 1737 #endif 1738 1739 /* 1740 * Build the signal context to be used by sigreturn. 1741 */ 1742 ksc.sc_onstack = oonstack; 1743 ksc.sc_mask = mask; 1744 ksc.sc_pc = frame->tf_regs[FRAME_PC]; 1745 ksc.sc_ps = frame->tf_regs[FRAME_PS]; 1746 1747 /* copy the registers. */ 1748 frametoreg(frame, (struct reg *)ksc.sc_regs); 1749 ksc.sc_regs[R_ZERO] = 0xACEDBADE; /* magic number */ 1750 ksc.sc_regs[R_SP] = alpha_pal_rdusp(); 1751 1752 /* save the floating-point state, if necessary, then copy it. */ 1753 if (p == fpcurproc) { 1754 alpha_pal_wrfen(1); 1755 savefpstate(&p->p_addr->u_pcb.pcb_fp); 1756 alpha_pal_wrfen(0); 1757 fpcurproc = NULL; 1758 } 1759 ksc.sc_ownedfp = p->p_md.md_flags & MDP_FPUSED; 1760 bcopy(&p->p_addr->u_pcb.pcb_fp, (struct fpreg *)ksc.sc_fpregs, 1761 sizeof(struct fpreg)); 1762 ksc.sc_fp_control = 0; /* XXX ? */ 1763 bzero(ksc.sc_reserved, sizeof ksc.sc_reserved); /* XXX */ 1764 bzero(ksc.sc_xxx, sizeof ksc.sc_xxx); /* XXX */ 1765 1766 1767 #ifdef COMPAT_OSF1 1768 /* 1769 * XXX Create an OSF/1-style sigcontext and associated goo. 1770 */ 1771 #endif 1772 1773 /* 1774 * copy the frame out to userland. 1775 */ 1776 (void) copyout((caddr_t)&ksc, (caddr_t)scp, fsize); 1777 #ifdef DEBUG 1778 if (sigdebug & SDB_FOLLOW) 1779 printf("sendsig(%d): sig %d scp %p code %lx\n", p->p_pid, sig, 1780 scp, code); 1781 #endif 1782 1783 /* 1784 * Set up the registers to return to sigcode. 1785 */ 1786 frame->tf_regs[FRAME_PC] = 1787 (u_int64_t)PS_STRINGS - (esigcode - sigcode); 1788 frame->tf_regs[FRAME_A0] = sig; 1789 frame->tf_regs[FRAME_A1] = code; 1790 frame->tf_regs[FRAME_A2] = (u_int64_t)scp; 1791 frame->tf_regs[FRAME_T12] = (u_int64_t)catcher; /* t12 is pv */ 1792 alpha_pal_wrusp((unsigned long)scp); 1793 1794 #ifdef DEBUG 1795 if (sigdebug & SDB_FOLLOW) 1796 printf("sendsig(%d): pc %lx, catcher %lx\n", p->p_pid, 1797 frame->tf_regs[FRAME_PC], frame->tf_regs[FRAME_A3]); 1798 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1799 printf("sendsig(%d): sig %d returns\n", 1800 p->p_pid, sig); 1801 #endif 1802 } 1803 1804 /* 1805 * System call to cleanup state after a signal 1806 * has been taken. Reset signal mask and 1807 * stack state from context left by sendsig (above). 1808 * Return to previous pc and psl as specified by 1809 * context left by sendsig. Check carefully to 1810 * make sure that the user has not modified the 1811 * psl to gain improper priviledges or to cause 1812 * a machine fault. 1813 */ 1814 /* ARGSUSED */ 1815 int 1816 sys_sigreturn(p, v, retval) 1817 struct proc *p; 1818 void *v; 1819 register_t *retval; 1820 { 1821 struct sys_sigreturn_args /* { 1822 syscallarg(struct sigcontext *) sigcntxp; 1823 } */ *uap = v; 1824 struct sigcontext *scp, ksc; 1825 extern struct proc *fpcurproc; 1826 1827 scp = SCARG(uap, sigcntxp); 1828 #ifdef DEBUG 1829 if (sigdebug & SDB_FOLLOW) 1830 printf("sigreturn: pid %d, scp %p\n", p->p_pid, scp); 1831 #endif 1832 1833 if (ALIGN(scp) != (u_int64_t)scp) 1834 return (EINVAL); 1835 1836 /* 1837 * Test and fetch the context structure. 1838 * We grab it all at once for speed. 1839 */ 1840 #if defined(UVM) 1841 if (uvm_useracc((caddr_t)scp, sizeof (*scp), B_WRITE) == 0 || 1842 copyin((caddr_t)scp, (caddr_t)&ksc, sizeof ksc)) 1843 return (EINVAL); 1844 #else 1845 if (useracc((caddr_t)scp, sizeof (*scp), B_WRITE) == 0 || 1846 copyin((caddr_t)scp, (caddr_t)&ksc, sizeof ksc)) 1847 return (EINVAL); 1848 #endif 1849 1850 if (ksc.sc_regs[R_ZERO] != 0xACEDBADE) /* magic number */ 1851 return (EINVAL); 1852 /* 1853 * Restore the user-supplied information 1854 */ 1855 if (ksc.sc_onstack) 1856 p->p_sigacts->ps_sigstk.ss_flags |= SS_ONSTACK; 1857 else 1858 p->p_sigacts->ps_sigstk.ss_flags &= ~SS_ONSTACK; 1859 p->p_sigmask = ksc.sc_mask &~ sigcantmask; 1860 1861 p->p_md.md_tf->tf_regs[FRAME_PC] = ksc.sc_pc; 1862 p->p_md.md_tf->tf_regs[FRAME_PS] = 1863 (ksc.sc_ps | ALPHA_PSL_USERSET) & ~ALPHA_PSL_USERCLR; 1864 1865 regtoframe((struct reg *)ksc.sc_regs, p->p_md.md_tf); 1866 alpha_pal_wrusp(ksc.sc_regs[R_SP]); 1867 1868 /* XXX ksc.sc_ownedfp ? */ 1869 if (p == fpcurproc) 1870 fpcurproc = NULL; 1871 bcopy((struct fpreg *)ksc.sc_fpregs, &p->p_addr->u_pcb.pcb_fp, 1872 sizeof(struct fpreg)); 1873 /* XXX ksc.sc_fp_control ? */ 1874 1875 #ifdef DEBUG 1876 if (sigdebug & SDB_FOLLOW) 1877 printf("sigreturn(%d): returns\n", p->p_pid); 1878 #endif 1879 return (EJUSTRETURN); 1880 } 1881 1882 /* 1883 * machine dependent system variables. 1884 */ 1885 int 1886 cpu_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 1887 int *name; 1888 u_int namelen; 1889 void *oldp; 1890 size_t *oldlenp; 1891 void *newp; 1892 size_t newlen; 1893 struct proc *p; 1894 { 1895 dev_t consdev; 1896 1897 /* all sysctl names at this level are terminal */ 1898 if (namelen != 1) 1899 return (ENOTDIR); /* overloaded */ 1900 1901 switch (name[0]) { 1902 case CPU_CONSDEV: 1903 if (cn_tab != NULL) 1904 consdev = cn_tab->cn_dev; 1905 else 1906 consdev = NODEV; 1907 return (sysctl_rdstruct(oldp, oldlenp, newp, &consdev, 1908 sizeof consdev)); 1909 1910 case CPU_ROOT_DEVICE: 1911 return (sysctl_rdstring(oldp, oldlenp, newp, 1912 root_device->dv_xname)); 1913 1914 case CPU_UNALIGNED_PRINT: 1915 return (sysctl_int(oldp, oldlenp, newp, newlen, 1916 &alpha_unaligned_print)); 1917 1918 case CPU_UNALIGNED_FIX: 1919 return (sysctl_int(oldp, oldlenp, newp, newlen, 1920 &alpha_unaligned_fix)); 1921 1922 case CPU_UNALIGNED_SIGBUS: 1923 return (sysctl_int(oldp, oldlenp, newp, newlen, 1924 &alpha_unaligned_sigbus)); 1925 1926 case CPU_BOOTED_KERNEL: 1927 return (sysctl_rdstring(oldp, oldlenp, newp, 1928 bootinfo.booted_kernel)); 1929 1930 default: 1931 return (EOPNOTSUPP); 1932 } 1933 /* NOTREACHED */ 1934 } 1935 1936 /* 1937 * Set registers on exec. 1938 */ 1939 void 1940 setregs(p, pack, stack) 1941 register struct proc *p; 1942 struct exec_package *pack; 1943 u_long stack; 1944 { 1945 struct trapframe *tfp = p->p_md.md_tf; 1946 extern struct proc *fpcurproc; 1947 #ifdef DEBUG 1948 int i; 1949 #endif 1950 1951 #ifdef DEBUG 1952 /* 1953 * Crash and dump, if the user requested it. 1954 */ 1955 if (boothowto & RB_DUMP) 1956 panic("crash requested by boot flags"); 1957 #endif 1958 1959 #ifdef DEBUG 1960 for (i = 0; i < FRAME_SIZE; i++) 1961 tfp->tf_regs[i] = 0xbabefacedeadbeef; 1962 #else 1963 bzero(tfp->tf_regs, FRAME_SIZE * sizeof tfp->tf_regs[0]); 1964 #endif 1965 bzero(&p->p_addr->u_pcb.pcb_fp, sizeof p->p_addr->u_pcb.pcb_fp); 1966 #define FP_RN 2 /* XXX */ 1967 p->p_addr->u_pcb.pcb_fp.fpr_cr = (long)FP_RN << 58; 1968 alpha_pal_wrusp(stack); 1969 tfp->tf_regs[FRAME_PS] = ALPHA_PSL_USERSET; 1970 tfp->tf_regs[FRAME_PC] = pack->ep_entry & ~3; 1971 1972 tfp->tf_regs[FRAME_A0] = stack; /* a0 = sp */ 1973 tfp->tf_regs[FRAME_A1] = 0; /* a1 = rtld cleanup */ 1974 tfp->tf_regs[FRAME_A2] = 0; /* a2 = rtld object */ 1975 tfp->tf_regs[FRAME_A3] = (u_int64_t)PS_STRINGS; /* a3 = ps_strings */ 1976 tfp->tf_regs[FRAME_T12] = tfp->tf_regs[FRAME_PC]; /* a.k.a. PV */ 1977 1978 p->p_md.md_flags &= ~MDP_FPUSED; 1979 if (fpcurproc == p) 1980 fpcurproc = NULL; 1981 } 1982 1983 void 1984 netintr() 1985 { 1986 int n, s; 1987 1988 s = splhigh(); 1989 n = netisr; 1990 netisr = 0; 1991 splx(s); 1992 1993 #define DONETISR(bit, fn) \ 1994 do { \ 1995 if (n & (1 << (bit))) \ 1996 fn; \ 1997 } while (0) 1998 1999 #ifdef INET 2000 #if NARP > 0 2001 DONETISR(NETISR_ARP, arpintr()); 2002 #endif 2003 DONETISR(NETISR_IP, ipintr()); 2004 #endif 2005 #ifdef NETATALK 2006 DONETISR(NETISR_ATALK, atintr()); 2007 #endif 2008 #ifdef NS 2009 DONETISR(NETISR_NS, nsintr()); 2010 #endif 2011 #ifdef ISO 2012 DONETISR(NETISR_ISO, clnlintr()); 2013 #endif 2014 #ifdef CCITT 2015 DONETISR(NETISR_CCITT, ccittintr()); 2016 #endif 2017 #ifdef NATM 2018 DONETISR(NETISR_NATM, natmintr()); 2019 #endif 2020 #if NPPP > 1 2021 DONETISR(NETISR_PPP, pppintr()); 2022 #endif 2023 2024 #undef DONETISR 2025 } 2026 2027 void 2028 do_sir() 2029 { 2030 u_int64_t n; 2031 2032 do { 2033 (void)splhigh(); 2034 n = ssir; 2035 ssir = 0; 2036 splsoft(); /* don't recurse through spl0() */ 2037 2038 #if defined(UVM) 2039 #define COUNT_SOFT uvmexp.softs++ 2040 #else 2041 #define COUNT_SOFT cnt.v_soft++ 2042 #endif 2043 2044 #define DO_SIR(bit, fn) \ 2045 do { \ 2046 if (n & (bit)) { \ 2047 COUNT_SOFT; \ 2048 fn; \ 2049 } \ 2050 } while (0) 2051 2052 DO_SIR(SIR_NET, netintr()); 2053 DO_SIR(SIR_CLOCK, softclock()); 2054 2055 #undef COUNT_SOFT 2056 #undef DO_SIR 2057 } while (ssir != 0); 2058 } 2059 2060 int 2061 spl0() 2062 { 2063 2064 if (ssir) 2065 do_sir(); /* it lowers the IPL itself */ 2066 2067 return (alpha_pal_swpipl(ALPHA_PSL_IPL_0)); 2068 } 2069 2070 /* 2071 * The following primitives manipulate the run queues. _whichqs tells which 2072 * of the 32 queues _qs have processes in them. Setrunqueue puts processes 2073 * into queues, Remrunqueue removes them from queues. The running process is 2074 * on no queue, other processes are on a queue related to p->p_priority, 2075 * divided by 4 actually to shrink the 0-127 range of priorities into the 32 2076 * available queues. 2077 */ 2078 /* 2079 * setrunqueue(p) 2080 * proc *p; 2081 * 2082 * Call should be made at splclock(), and p->p_stat should be SRUN. 2083 */ 2084 2085 void 2086 setrunqueue(p) 2087 struct proc *p; 2088 { 2089 int bit; 2090 2091 /* firewall: p->p_back must be NULL */ 2092 if (p->p_back != NULL) 2093 panic("setrunqueue"); 2094 2095 bit = p->p_priority >> 2; 2096 whichqs |= (1 << bit); 2097 p->p_forw = (struct proc *)&qs[bit]; 2098 p->p_back = qs[bit].ph_rlink; 2099 p->p_back->p_forw = p; 2100 qs[bit].ph_rlink = p; 2101 } 2102 2103 /* 2104 * remrunqueue(p) 2105 * 2106 * Call should be made at splclock(). 2107 */ 2108 void 2109 remrunqueue(p) 2110 struct proc *p; 2111 { 2112 int bit; 2113 2114 bit = p->p_priority >> 2; 2115 if ((whichqs & (1 << bit)) == 0) 2116 panic("remrunqueue"); 2117 2118 p->p_back->p_forw = p->p_forw; 2119 p->p_forw->p_back = p->p_back; 2120 p->p_back = NULL; /* for firewall checking. */ 2121 2122 if ((struct proc *)&qs[bit] == qs[bit].ph_link) 2123 whichqs &= ~(1 << bit); 2124 } 2125 2126 /* 2127 * Return the best possible estimate of the time in the timeval 2128 * to which tvp points. Unfortunately, we can't read the hardware registers. 2129 * We guarantee that the time will be greater than the value obtained by a 2130 * previous call. 2131 */ 2132 void 2133 microtime(tvp) 2134 register struct timeval *tvp; 2135 { 2136 int s = splclock(); 2137 static struct timeval lasttime; 2138 2139 *tvp = time; 2140 #ifdef notdef 2141 tvp->tv_usec += clkread(); 2142 while (tvp->tv_usec > 1000000) { 2143 tvp->tv_sec++; 2144 tvp->tv_usec -= 1000000; 2145 } 2146 #endif 2147 if (tvp->tv_sec == lasttime.tv_sec && 2148 tvp->tv_usec <= lasttime.tv_usec && 2149 (tvp->tv_usec = lasttime.tv_usec + 1) > 1000000) { 2150 tvp->tv_sec++; 2151 tvp->tv_usec -= 1000000; 2152 } 2153 lasttime = *tvp; 2154 splx(s); 2155 } 2156 2157 /* 2158 * Wait "n" microseconds. 2159 */ 2160 void 2161 delay(n) 2162 unsigned long n; 2163 { 2164 long N = cycles_per_usec * (n); 2165 2166 while (N > 0) /* XXX */ 2167 N -= 3; /* XXX */ 2168 } 2169 2170 #if defined(COMPAT_OSF1) || 1 /* XXX */ 2171 void cpu_exec_ecoff_setregs __P((struct proc *, struct exec_package *, 2172 u_long)); 2173 2174 void 2175 cpu_exec_ecoff_setregs(p, epp, stack) 2176 struct proc *p; 2177 struct exec_package *epp; 2178 u_long stack; 2179 { 2180 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2181 2182 setregs(p, epp, stack); 2183 p->p_md.md_tf->tf_regs[FRAME_GP] = execp->a.gp_value; 2184 } 2185 2186 /* 2187 * cpu_exec_ecoff_hook(): 2188 * cpu-dependent ECOFF format hook for execve(). 2189 * 2190 * Do any machine-dependent diddling of the exec package when doing ECOFF. 2191 * 2192 */ 2193 int 2194 cpu_exec_ecoff_hook(p, epp) 2195 struct proc *p; 2196 struct exec_package *epp; 2197 { 2198 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2199 extern struct emul emul_netbsd; 2200 #ifdef COMPAT_OSF1 2201 extern struct emul emul_osf1; 2202 #endif 2203 2204 switch (execp->f.f_magic) { 2205 #ifdef COMPAT_OSF1 2206 case ECOFF_MAGIC_ALPHA: 2207 epp->ep_emul = &emul_osf1; 2208 break; 2209 #endif 2210 2211 case ECOFF_MAGIC_NETBSD_ALPHA: 2212 epp->ep_emul = &emul_netbsd; 2213 break; 2214 2215 default: 2216 return ENOEXEC; 2217 } 2218 return 0; 2219 } 2220 #endif 2221 2222 int 2223 alpha_pa_access(pa) 2224 u_long pa; 2225 { 2226 int i; 2227 2228 for (i = 0; i < mem_cluster_cnt; i++) { 2229 if (pa < mem_clusters[i].start) 2230 continue; 2231 if ((pa - mem_clusters[i].start) >= 2232 (mem_clusters[i].size & ~PAGE_MASK)) 2233 continue; 2234 return (mem_clusters[i].size & PAGE_MASK); /* prot */ 2235 } 2236 return (PROT_NONE); 2237 } 2238 2239 /* XXX XXX BEGIN XXX XXX */ 2240 vm_offset_t alpha_XXX_dmamap_or; /* XXX */ 2241 /* XXX */ 2242 vm_offset_t /* XXX */ 2243 alpha_XXX_dmamap(v) /* XXX */ 2244 vm_offset_t v; /* XXX */ 2245 { /* XXX */ 2246 /* XXX */ 2247 return (vtophys(v) | alpha_XXX_dmamap_or); /* XXX */ 2248 } /* XXX */ 2249 /* XXX XXX END XXX XXX */ 2250
Indexes created Fri Oct 03 02:09:57 GMT 2025