machdep.c revision 1.185
1 /* $NetBSD: machdep.c,v 1.185 1999/11/30 19:31:56 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center and by Chris G. Demetriou. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /* 41 * Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University. 42 * All rights reserved. 43 * 44 * Author: Chris G. Demetriou 45 * 46 * Permission to use, copy, modify and distribute this software and 47 * its documentation is hereby granted, provided that both the copyright 48 * notice and this permission notice appear in all copies of the 49 * software, derivative works or modified versions, and any portions 50 * thereof, and that both notices appear in supporting documentation. 51 * 52 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 53 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 54 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 55 * 56 * Carnegie Mellon requests users of this software to return to 57 * 58 * Software Distribution Coordinator or Software.Distribution (at) CS.CMU.EDU 59 * School of Computer Science 60 * Carnegie Mellon University 61 * Pittsburgh PA 15213-3890 62 * 63 * any improvements or extensions that they make and grant Carnegie the 64 * rights to redistribute these changes. 65 */ 66 67 #include "opt_ddb.h" 68 #include "opt_multiprocessor.h" 69 #include "opt_dec_3000_300.h" 70 #include "opt_dec_3000_500.h" 71 #include "opt_compat_osf1.h" 72 #include "opt_compat_netbsd.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 1.185 1999/11/30 19:31:56 thorpej 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 #include <sys/callout.h> 95 #include <sys/malloc.h> 96 #include <sys/mbuf.h> 97 #include <sys/mman.h> 98 #include <sys/msgbuf.h> 99 #include <sys/ioctl.h> 100 #include <sys/tty.h> 101 #include <sys/user.h> 102 #include <sys/exec.h> 103 #include <sys/exec_ecoff.h> 104 #include <vm/vm.h> 105 #include <sys/sysctl.h> 106 #include <sys/core.h> 107 #include <sys/kcore.h> 108 #include <machine/kcore.h> 109 110 #include <sys/mount.h> 111 #include <sys/syscallargs.h> 112 113 #include <vm/vm_kern.h> 114 115 #include <uvm/uvm_extern.h> 116 117 #include <dev/cons.h> 118 119 #include <machine/autoconf.h> 120 #include <machine/cpu.h> 121 #include <machine/reg.h> 122 #include <machine/rpb.h> 123 #include <machine/prom.h> 124 #include <machine/conf.h> 125 #include <machine/ieeefp.h> 126 127 #include <net/netisr.h> 128 #include <net/if.h> 129 130 #ifdef INET 131 #include <net/route.h> 132 #include <netinet/in.h> 133 #include <netinet/ip_var.h> 134 #include "arp.h" 135 #if NARP > 0 136 #include <netinet/if_inarp.h> 137 #endif 138 #endif 139 #ifdef INET6 140 # ifndef INET 141 # include <netinet/in.h> 142 # endif 143 #include <netinet6/ip6.h> 144 #include <netinet6/ip6_var.h> 145 #endif 146 #ifdef NS 147 #include <netns/ns_var.h> 148 #endif 149 #ifdef ISO 150 #include <netiso/iso.h> 151 #include <netiso/clnp.h> 152 #endif 153 #ifdef CCITT 154 #include <netccitt/x25.h> 155 #include <netccitt/pk.h> 156 #include <netccitt/pk_extern.h> 157 #endif 158 #ifdef NATM 159 #include <netnatm/natm.h> 160 #endif 161 #ifdef NETATALK 162 #include <netatalk/at_extern.h> 163 #endif 164 #include "ppp.h" 165 #if NPPP > 0 166 #include <net/ppp_defs.h> 167 #include <net/if_ppp.h> 168 #endif 169 170 #ifdef DDB 171 #include <machine/db_machdep.h> 172 #include <ddb/db_access.h> 173 #include <ddb/db_sym.h> 174 #include <ddb/db_extern.h> 175 #include <ddb/db_interface.h> 176 #endif 177 178 #include <machine/alpha.h> 179 #include <machine/intrcnt.h> 180 181 #include "com.h" 182 #if NCOM > 0 183 extern void comsoft __P((void)); 184 #endif 185 186 vm_map_t exec_map = NULL; 187 vm_map_t mb_map = NULL; 188 vm_map_t phys_map = NULL; 189 190 caddr_t msgbufaddr; 191 192 int maxmem; /* max memory per process */ 193 194 int totalphysmem; /* total amount of physical memory in system */ 195 int physmem; /* physical memory used by NetBSD + some rsvd */ 196 int resvmem; /* amount of memory reserved for PROM */ 197 int unusedmem; /* amount of memory for OS that we don't use */ 198 int unknownmem; /* amount of memory with an unknown use */ 199 200 int cputype; /* system type, from the RPB */ 201 202 /* 203 * XXX We need an address to which we can assign things so that they 204 * won't be optimized away because we didn't use the value. 205 */ 206 u_int32_t no_optimize; 207 208 /* the following is used externally (sysctl_hw) */ 209 char machine[] = MACHINE; /* from <machine/param.h> */ 210 char machine_arch[] = MACHINE_ARCH; /* from <machine/param.h> */ 211 char cpu_model[128]; 212 213 struct user *proc0paddr; 214 215 /* Number of machine cycles per microsecond */ 216 u_int64_t cycles_per_usec; 217 218 /* number of cpus in the box. really! */ 219 int ncpus; 220 221 /* machine check info array, valloc()'ed in mdallocsys() */ 222 223 static struct mchkinfo startup_info, 224 *mchkinfo_all_cpus; 225 226 struct bootinfo_kernel bootinfo; 227 228 /* For built-in TCDS */ 229 #if defined(DEC_3000_300) || defined(DEC_3000_500) 230 u_int8_t dec_3000_scsiid[2], dec_3000_scsifast[2]; 231 #endif 232 233 struct platform platform; 234 235 u_int32_t vm_kmem_size = _VM_KMEM_SIZE; 236 u_int32_t vm_phys_size = _VM_PHYS_SIZE; 237 238 #ifdef DDB 239 /* start and end of kernel symbol table */ 240 void *ksym_start, *ksym_end; 241 #endif 242 243 /* for cpu_sysctl() */ 244 int alpha_unaligned_print = 1; /* warn about unaligned accesses */ 245 int alpha_unaligned_fix = 1; /* fix up unaligned accesses */ 246 int alpha_unaligned_sigbus = 0; /* don't SIGBUS on fixed-up accesses */ 247 248 /* 249 * XXX This should be dynamically sized, but we have the chicken-egg problem! 250 * XXX it should also be larger than it is, because not all of the mddt 251 * XXX clusters end up being used for VM. 252 */ 253 phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX]; /* low size bits overloaded */ 254 int mem_cluster_cnt; 255 256 int cpu_dump __P((void)); 257 int cpu_dumpsize __P((void)); 258 u_long cpu_dump_mempagecnt __P((void)); 259 void dumpsys __P((void)); 260 void identifycpu __P((void)); 261 caddr_t mdallocsys __P((caddr_t)); 262 void netintr __P((void)); 263 void printregs __P((struct reg *)); 264 265 void 266 alpha_init(pfn, ptb, bim, bip, biv) 267 u_long pfn; /* first free PFN number */ 268 u_long ptb; /* PFN of current level 1 page table */ 269 u_long bim; /* bootinfo magic */ 270 u_long bip; /* bootinfo pointer */ 271 u_long biv; /* bootinfo version */ 272 { 273 extern char kernel_text[], _end[]; 274 struct mddt *mddtp; 275 struct mddt_cluster *memc; 276 int i, mddtweird; 277 struct vm_physseg *vps; 278 vaddr_t kernstart, kernend; 279 paddr_t kernstartpfn, kernendpfn, pfn0, pfn1; 280 vsize_t size; 281 char *p; 282 caddr_t v; 283 char *bootinfo_msg; 284 285 /* NO OUTPUT ALLOWED UNTIL FURTHER NOTICE */ 286 287 /* 288 * Turn off interrupts (not mchecks) and floating point. 289 * Make sure the instruction and data streams are consistent. 290 */ 291 (void)alpha_pal_swpipl(ALPHA_PSL_IPL_HIGH); 292 alpha_pal_wrfen(0); 293 ALPHA_TBIA(); 294 alpha_pal_imb(); 295 296 /* 297 * Get critical system information (if possible, from the 298 * information provided by the boot program). 299 */ 300 bootinfo_msg = NULL; 301 if (bim == BOOTINFO_MAGIC) { 302 if (biv == 0) { /* backward compat */ 303 biv = *(u_long *)bip; 304 bip += 8; 305 } 306 switch (biv) { 307 case 1: { 308 struct bootinfo_v1 *v1p = (struct bootinfo_v1 *)bip; 309 310 bootinfo.ssym = v1p->ssym; 311 bootinfo.esym = v1p->esym; 312 /* hwrpb may not be provided by boot block in v1 */ 313 if (v1p->hwrpb != NULL) { 314 bootinfo.hwrpb_phys = 315 ((struct rpb *)v1p->hwrpb)->rpb_phys; 316 bootinfo.hwrpb_size = v1p->hwrpbsize; 317 } else { 318 bootinfo.hwrpb_phys = 319 ((struct rpb *)HWRPB_ADDR)->rpb_phys; 320 bootinfo.hwrpb_size = 321 ((struct rpb *)HWRPB_ADDR)->rpb_size; 322 } 323 bcopy(v1p->boot_flags, bootinfo.boot_flags, 324 min(sizeof v1p->boot_flags, 325 sizeof bootinfo.boot_flags)); 326 bcopy(v1p->booted_kernel, bootinfo.booted_kernel, 327 min(sizeof v1p->booted_kernel, 328 sizeof bootinfo.booted_kernel)); 329 /* booted dev not provided in bootinfo */ 330 init_prom_interface((struct rpb *) 331 ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys)); 332 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 333 sizeof bootinfo.booted_dev); 334 break; 335 } 336 default: 337 bootinfo_msg = "unknown bootinfo version"; 338 goto nobootinfo; 339 } 340 } else { 341 bootinfo_msg = "boot program did not pass bootinfo"; 342 nobootinfo: 343 bootinfo.ssym = (u_long)_end; 344 bootinfo.esym = (u_long)_end; 345 bootinfo.hwrpb_phys = ((struct rpb *)HWRPB_ADDR)->rpb_phys; 346 bootinfo.hwrpb_size = ((struct rpb *)HWRPB_ADDR)->rpb_size; 347 init_prom_interface((struct rpb *)HWRPB_ADDR); 348 prom_getenv(PROM_E_BOOTED_OSFLAGS, bootinfo.boot_flags, 349 sizeof bootinfo.boot_flags); 350 prom_getenv(PROM_E_BOOTED_FILE, bootinfo.booted_kernel, 351 sizeof bootinfo.booted_kernel); 352 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 353 sizeof bootinfo.booted_dev); 354 } 355 356 /* 357 * Initialize the kernel's mapping of the RPB. It's needed for 358 * lots of things. 359 */ 360 hwrpb = (struct rpb *)ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys); 361 362 #if defined(DEC_3000_300) || defined(DEC_3000_500) 363 if (hwrpb->rpb_type == ST_DEC_3000_300 || 364 hwrpb->rpb_type == ST_DEC_3000_500) { 365 prom_getenv(PROM_E_SCSIID, dec_3000_scsiid, 366 sizeof(dec_3000_scsiid)); 367 prom_getenv(PROM_E_SCSIFAST, dec_3000_scsifast, 368 sizeof(dec_3000_scsifast)); 369 } 370 #endif 371 372 /* 373 * Remember how many cycles there are per microsecond, 374 * so that we can use delay(). Round up, for safety. 375 */ 376 cycles_per_usec = (hwrpb->rpb_cc_freq + 999999) / 1000000; 377 378 /* 379 * Initalize the (temporary) bootstrap console interface, so 380 * we can use printf until the VM system starts being setup. 381 * The real console is initialized before then. 382 */ 383 init_bootstrap_console(); 384 385 /* OUTPUT NOW ALLOWED */ 386 387 /* delayed from above */ 388 if (bootinfo_msg) 389 printf("WARNING: %s (0x%lx, 0x%lx, 0x%lx)\n", 390 bootinfo_msg, bim, bip, biv); 391 392 /* Initialize the trap vectors on the primary processor. */ 393 trap_init(); 394 395 /* 396 * Find out what hardware we're on, and do basic initialization. 397 */ 398 cputype = hwrpb->rpb_type; 399 if (cputype < 0) { 400 /* 401 * At least some white-box systems have SRM which 402 * reports a systype that's the negative of their 403 * blue-box counterpart. 404 */ 405 cputype = -cputype; 406 } 407 if (cputype >= ncpuinit) { 408 platform_not_supported(); 409 /* NOTREACHED */ 410 } 411 (*cpuinit[cputype].init)(); 412 strcpy(cpu_model, platform.model); 413 414 /* 415 * Initalize the real console, so the the bootstrap console is 416 * no longer necessary. 417 */ 418 (*platform.cons_init)(); 419 420 #ifdef DIAGNOSTIC 421 /* Paranoid sanity checking */ 422 423 /* We should always be running on the the primary. */ 424 assert(hwrpb->rpb_primary_cpu_id == alpha_pal_whami()); 425 426 /* 427 * On single-CPU systypes, the primary should always be CPU 0, 428 * except on Alpha 8200 systems where the CPU id is related 429 * to the VID, which is related to the Turbo Laser node id. 430 */ 431 if (cputype != ST_DEC_21000) 432 assert(hwrpb->rpb_primary_cpu_id == 0); 433 #endif 434 435 /* NO MORE FIRMWARE ACCESS ALLOWED */ 436 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 437 /* 438 * XXX (unless _PMAP_MAY_USE_PROM_CONSOLE is defined and 439 * XXX pmap_uses_prom_console() evaluates to non-zero.) 440 */ 441 #endif 442 443 /* 444 * find out this system's page size 445 */ 446 PAGE_SIZE = hwrpb->rpb_page_size; 447 if (PAGE_SIZE != 8192) 448 panic("page size %d != 8192?!", PAGE_SIZE); 449 450 /* 451 * Initialize PAGE_SIZE-dependent variables. 452 */ 453 uvm_setpagesize(); 454 455 /* 456 * Find the beginning and end of the kernel (and leave a 457 * bit of space before the beginning for the bootstrap 458 * stack). 459 */ 460 kernstart = trunc_page(kernel_text) - 2 * PAGE_SIZE; 461 #ifdef DDB 462 ksym_start = (void *)bootinfo.ssym; 463 ksym_end = (void *)bootinfo.esym; 464 kernend = (vaddr_t)round_page(ksym_end); 465 #else 466 kernend = (vaddr_t)round_page(_end); 467 #endif 468 469 kernstartpfn = atop(ALPHA_K0SEG_TO_PHYS(kernstart)); 470 kernendpfn = atop(ALPHA_K0SEG_TO_PHYS(kernend)); 471 472 /* 473 * Find out how much memory is available, by looking at 474 * the memory cluster descriptors. This also tries to do 475 * its best to detect things things that have never been seen 476 * before... 477 */ 478 mddtp = (struct mddt *)(((caddr_t)hwrpb) + hwrpb->rpb_memdat_off); 479 480 /* MDDT SANITY CHECKING */ 481 mddtweird = 0; 482 if (mddtp->mddt_cluster_cnt < 2) { 483 mddtweird = 1; 484 printf("WARNING: weird number of mem clusters: %lu\n", 485 mddtp->mddt_cluster_cnt); 486 } 487 488 #if 0 489 printf("Memory cluster count: %d\n", mddtp->mddt_cluster_cnt); 490 #endif 491 492 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 493 memc = &mddtp->mddt_clusters[i]; 494 #if 0 495 printf("MEMC %d: pfn 0x%lx cnt 0x%lx usage 0x%lx\n", i, 496 memc->mddt_pfn, memc->mddt_pg_cnt, memc->mddt_usage); 497 #endif 498 totalphysmem += memc->mddt_pg_cnt; 499 if (mem_cluster_cnt < VM_PHYSSEG_MAX) { /* XXX */ 500 mem_clusters[mem_cluster_cnt].start = 501 ptoa(memc->mddt_pfn); 502 mem_clusters[mem_cluster_cnt].size = 503 ptoa(memc->mddt_pg_cnt); 504 if (memc->mddt_usage & MDDT_mbz || 505 memc->mddt_usage & MDDT_NONVOLATILE || /* XXX */ 506 memc->mddt_usage & MDDT_PALCODE) 507 mem_clusters[mem_cluster_cnt].size |= 508 PROT_READ; 509 else 510 mem_clusters[mem_cluster_cnt].size |= 511 PROT_READ | PROT_WRITE | PROT_EXEC; 512 mem_cluster_cnt++; 513 } 514 515 if (memc->mddt_usage & MDDT_mbz) { 516 mddtweird = 1; 517 printf("WARNING: mem cluster %d has weird " 518 "usage 0x%lx\n", i, memc->mddt_usage); 519 unknownmem += memc->mddt_pg_cnt; 520 continue; 521 } 522 if (memc->mddt_usage & MDDT_NONVOLATILE) { 523 /* XXX should handle these... */ 524 printf("WARNING: skipping non-volatile mem " 525 "cluster %d\n", i); 526 unusedmem += memc->mddt_pg_cnt; 527 continue; 528 } 529 if (memc->mddt_usage & MDDT_PALCODE) { 530 resvmem += memc->mddt_pg_cnt; 531 continue; 532 } 533 534 /* 535 * We have a memory cluster available for system 536 * software use. We must determine if this cluster 537 * holds the kernel. 538 */ 539 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 540 /* 541 * XXX If the kernel uses the PROM console, we only use the 542 * XXX memory after the kernel in the first system segment, 543 * XXX to avoid clobbering prom mapping, data, etc. 544 */ 545 if (!pmap_uses_prom_console() || physmem == 0) { 546 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 547 physmem += memc->mddt_pg_cnt; 548 pfn0 = memc->mddt_pfn; 549 pfn1 = memc->mddt_pfn + memc->mddt_pg_cnt; 550 if (pfn0 <= kernstartpfn && kernendpfn <= pfn1) { 551 /* 552 * Must compute the location of the kernel 553 * within the segment. 554 */ 555 #if 0 556 printf("Cluster %d contains kernel\n", i); 557 #endif 558 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 559 if (!pmap_uses_prom_console()) { 560 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 561 if (pfn0 < kernstartpfn) { 562 /* 563 * There is a chunk before the kernel. 564 */ 565 #if 0 566 printf("Loading chunk before kernel: " 567 "0x%lx / 0x%lx\n", pfn0, kernstartpfn); 568 #endif 569 uvm_page_physload(pfn0, kernstartpfn, 570 pfn0, kernstartpfn, VM_FREELIST_DEFAULT); 571 } 572 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 573 } 574 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 575 if (kernendpfn < pfn1) { 576 /* 577 * There is a chunk after the kernel. 578 */ 579 #if 0 580 printf("Loading chunk after kernel: " 581 "0x%lx / 0x%lx\n", kernendpfn, pfn1); 582 #endif 583 uvm_page_physload(kernendpfn, pfn1, 584 kernendpfn, pfn1, VM_FREELIST_DEFAULT); 585 } 586 } else { 587 /* 588 * Just load this cluster as one chunk. 589 */ 590 #if 0 591 printf("Loading cluster %d: 0x%lx / 0x%lx\n", i, 592 pfn0, pfn1); 593 #endif 594 uvm_page_physload(pfn0, pfn1, pfn0, pfn1, 595 VM_FREELIST_DEFAULT); 596 } 597 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 598 } 599 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 600 } 601 602 /* 603 * Dump out the MDDT if it looks odd... 604 */ 605 if (mddtweird) { 606 printf("\n"); 607 printf("complete memory cluster information:\n"); 608 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 609 printf("mddt %d:\n", i); 610 printf("\tpfn %lx\n", 611 mddtp->mddt_clusters[i].mddt_pfn); 612 printf("\tcnt %lx\n", 613 mddtp->mddt_clusters[i].mddt_pg_cnt); 614 printf("\ttest %lx\n", 615 mddtp->mddt_clusters[i].mddt_pg_test); 616 printf("\tbva %lx\n", 617 mddtp->mddt_clusters[i].mddt_v_bitaddr); 618 printf("\tbpa %lx\n", 619 mddtp->mddt_clusters[i].mddt_p_bitaddr); 620 printf("\tbcksum %lx\n", 621 mddtp->mddt_clusters[i].mddt_bit_cksum); 622 printf("\tusage %lx\n", 623 mddtp->mddt_clusters[i].mddt_usage); 624 } 625 printf("\n"); 626 } 627 628 if (totalphysmem == 0) 629 panic("can't happen: system seems to have no memory!"); 630 maxmem = physmem; 631 #if 0 632 printf("totalphysmem = %d\n", totalphysmem); 633 printf("physmem = %d\n", physmem); 634 printf("resvmem = %d\n", resvmem); 635 printf("unusedmem = %d\n", unusedmem); 636 printf("unknownmem = %d\n", unknownmem); 637 #endif 638 639 /* 640 * Adjust some parameters if the amount of physmem 641 * available would cause us to croak. This is completely 642 * eyeballed and isn't meant to be the final answer. 643 * vm_phys_size is probably the only one to really worry 644 * about. 645 * 646 * It's for booting a GENERIC kernel on a large memory platform. 647 */ 648 if (physmem >= atop(128 * 1024 * 1024)) { 649 vm_kmem_size <<= 3; 650 vm_phys_size <<= 2; 651 } 652 653 /* 654 * Initialize error message buffer (at end of core). 655 */ 656 { 657 size_t sz = round_page(MSGBUFSIZE); 658 659 vps = &vm_physmem[vm_nphysseg - 1]; 660 661 /* shrink so that it'll fit in the last segment */ 662 if ((vps->avail_end - vps->avail_start) < atop(sz)) 663 sz = ptoa(vps->avail_end - vps->avail_start); 664 665 vps->end -= atop(sz); 666 vps->avail_end -= atop(sz); 667 msgbufaddr = (caddr_t) ALPHA_PHYS_TO_K0SEG(ptoa(vps->end)); 668 initmsgbuf(msgbufaddr, sz); 669 670 /* Remove the last segment if it now has no pages. */ 671 if (vps->start == vps->end) 672 vm_nphysseg--; 673 674 /* warn if the message buffer had to be shrunk */ 675 if (sz != round_page(MSGBUFSIZE)) 676 printf("WARNING: %ld bytes not available for msgbuf in last cluster (%ld used)\n", 677 round_page(MSGBUFSIZE), sz); 678 679 } 680 681 /* 682 * Init mapping for u page(s) for proc 0 683 */ 684 proc0.p_addr = proc0paddr = 685 (struct user *)pmap_steal_memory(UPAGES * PAGE_SIZE, NULL, NULL); 686 687 /* 688 * Allocate space for system data structures. These data structures 689 * are allocated here instead of cpu_startup() because physical 690 * memory is directly addressable. We don't have to map these into 691 * virtual address space. 692 */ 693 size = (vsize_t)allocsys(NULL, mdallocsys); 694 v = (caddr_t)pmap_steal_memory(size, NULL, NULL); 695 if ((allocsys(v, mdallocsys) - v) != size) 696 panic("alpha_init: table size inconsistency"); 697 698 /* 699 * Initialize the virtual memory system, and set the 700 * page table base register in proc 0's PCB. 701 */ 702 pmap_bootstrap(ALPHA_PHYS_TO_K0SEG(ptb << PGSHIFT), 703 hwrpb->rpb_max_asn, hwrpb->rpb_pcs_cnt); 704 705 /* 706 * Initialize the rest of proc 0's PCB, and cache its physical 707 * address. 708 */ 709 proc0.p_md.md_pcbpaddr = 710 (struct pcb *)ALPHA_K0SEG_TO_PHYS((vaddr_t)&proc0paddr->u_pcb); 711 712 /* 713 * Set the kernel sp, reserving space for an (empty) trapframe, 714 * and make proc0's trapframe pointer point to it for sanity. 715 */ 716 proc0paddr->u_pcb.pcb_hw.apcb_ksp = 717 (u_int64_t)proc0paddr + USPACE - sizeof(struct trapframe); 718 proc0.p_md.md_tf = 719 (struct trapframe *)proc0paddr->u_pcb.pcb_hw.apcb_ksp; 720 721 /* 722 * Look at arguments passed to us and compute boothowto. 723 */ 724 725 boothowto = RB_SINGLE; 726 #ifdef KADB 727 boothowto |= RB_KDB; 728 #endif 729 for (p = bootinfo.boot_flags; p && *p != '\0'; p++) { 730 /* 731 * Note that we'd really like to differentiate case here, 732 * but the Alpha AXP Architecture Reference Manual 733 * says that we shouldn't. 734 */ 735 switch (*p) { 736 case 'a': /* autoboot */ 737 case 'A': 738 boothowto &= ~RB_SINGLE; 739 break; 740 741 #ifdef DEBUG 742 case 'c': /* crash dump immediately after autoconfig */ 743 case 'C': 744 boothowto |= RB_DUMP; 745 break; 746 #endif 747 748 #if defined(KGDB) || defined(DDB) 749 case 'd': /* break into the kernel debugger ASAP */ 750 case 'D': 751 boothowto |= RB_KDB; 752 break; 753 #endif 754 755 case 'h': /* always halt, never reboot */ 756 case 'H': 757 boothowto |= RB_HALT; 758 break; 759 760 #if 0 761 case 'm': /* mini root present in memory */ 762 case 'M': 763 boothowto |= RB_MINIROOT; 764 break; 765 #endif 766 767 case 'n': /* askname */ 768 case 'N': 769 boothowto |= RB_ASKNAME; 770 break; 771 772 case 's': /* single-user (default, supported for sanity) */ 773 case 'S': 774 boothowto |= RB_SINGLE; 775 break; 776 777 case '-': 778 /* 779 * Just ignore this. It's not required, but it's 780 * common for it to be passed regardless. 781 */ 782 break; 783 784 default: 785 printf("Unrecognized boot flag '%c'.\n", *p); 786 break; 787 } 788 } 789 790 791 /* 792 * Figure out the number of cpus in the box, from RPB fields. 793 * Really. We mean it. 794 */ 795 for (i = 0; i < hwrpb->rpb_pcs_cnt; i++) { 796 struct pcs *pcsp; 797 798 pcsp = LOCATE_PCS(hwrpb, i); 799 if ((pcsp->pcs_flags & PCS_PP) != 0) 800 ncpus++; 801 } 802 803 /* 804 * Initialize debuggers, and break into them if appropriate. 805 */ 806 #ifdef DDB 807 db_machine_init(); 808 ddb_init((int)((u_int64_t)ksym_end - (u_int64_t)ksym_start), 809 ksym_start, ksym_end); 810 if (boothowto & RB_KDB) 811 Debugger(); 812 #endif 813 #ifdef KGDB 814 if (boothowto & RB_KDB) 815 kgdb_connect(0); 816 #endif 817 /* 818 * Figure out our clock frequency, from RPB fields. 819 */ 820 hz = hwrpb->rpb_intr_freq >> 12; 821 if (!(60 <= hz && hz <= 10240)) { 822 hz = 1024; 823 #ifdef DIAGNOSTIC 824 printf("WARNING: unbelievable rpb_intr_freq: %ld (%d hz)\n", 825 hwrpb->rpb_intr_freq, hz); 826 #endif 827 } 828 } 829 830 caddr_t 831 mdallocsys(v) 832 caddr_t v; 833 { 834 /* 835 * There appears to be a correlation between the number 836 * of processor slots defined in the HWRPB and the whami 837 * value that can be returned. 838 */ 839 ALLOCSYS(v, mchkinfo_all_cpus, struct mchkinfo, hwrpb->rpb_pcs_cnt); 840 return (v); 841 } 842 843 void 844 consinit() 845 { 846 847 /* 848 * Everything related to console initialization is done 849 * in alpha_init(). 850 */ 851 #if defined(DIAGNOSTIC) && defined(_PMAP_MAY_USE_PROM_CONSOLE) 852 printf("consinit: %susing prom console\n", 853 pmap_uses_prom_console() ? "" : "not "); 854 #endif 855 } 856 857 #include "pckbc.h" 858 #include "pckbd.h" 859 #if (NPCKBC > 0) && (NPCKBD == 0) 860 861 #include <dev/isa/pckbcvar.h> 862 863 /* 864 * This is called by the pbkbc driver if no pckbd is configured. 865 * On the i386, it is used to glue in the old, deprecated console 866 * code. On the Alpha, it does nothing. 867 */ 868 int 869 pckbc_machdep_cnattach(kbctag, kbcslot) 870 pckbc_tag_t kbctag; 871 pckbc_slot_t kbcslot; 872 { 873 874 return (ENXIO); 875 } 876 #endif /* NPCKBC > 0 && NPCKBD == 0 */ 877 878 void 879 cpu_startup() 880 { 881 register unsigned i; 882 int base, residual; 883 vaddr_t minaddr, maxaddr; 884 vsize_t size; 885 char pbuf[9]; 886 #if defined(DEBUG) 887 extern int pmapdebug; 888 int opmapdebug = pmapdebug; 889 890 pmapdebug = 0; 891 #endif 892 893 /* 894 * Good {morning,afternoon,evening,night}. 895 */ 896 printf(version); 897 identifycpu(); 898 format_bytes(pbuf, sizeof(pbuf), ptoa(totalphysmem)); 899 printf("total memory = %s\n", pbuf); 900 format_bytes(pbuf, sizeof(pbuf), ptoa(resvmem)); 901 printf("(%s reserved for PROM, ", pbuf); 902 format_bytes(pbuf, sizeof(pbuf), ptoa(physmem)); 903 printf("%s used by NetBSD)\n", pbuf); 904 if (unusedmem) { 905 format_bytes(pbuf, sizeof(pbuf), ptoa(unusedmem)); 906 printf("WARNING: unused memory = %s\n", pbuf); 907 } 908 if (unknownmem) { 909 format_bytes(pbuf, sizeof(pbuf), ptoa(unknownmem)); 910 printf("WARNING: %s of memory with unknown purpose\n", pbuf); 911 } 912 913 /* 914 * Allocate virtual address space for file I/O buffers. 915 * Note they are different than the array of headers, 'buf', 916 * and usually occupy more virtual memory than physical. 917 */ 918 size = MAXBSIZE * nbuf; 919 if (uvm_map(kernel_map, (vaddr_t *) &buffers, round_page(size), 920 NULL, UVM_UNKNOWN_OFFSET, 921 UVM_MAPFLAG(UVM_PROT_NONE, UVM_PROT_NONE, UVM_INH_NONE, 922 UVM_ADV_NORMAL, 0)) != KERN_SUCCESS) 923 panic("startup: cannot allocate VM for buffers"); 924 base = bufpages / nbuf; 925 residual = bufpages % nbuf; 926 for (i = 0; i < nbuf; i++) { 927 vsize_t curbufsize; 928 vaddr_t curbuf; 929 struct vm_page *pg; 930 931 /* 932 * Each buffer has MAXBSIZE bytes of VM space allocated. Of 933 * that MAXBSIZE space, we allocate and map (base+1) pages 934 * for the first "residual" buffers, and then we allocate 935 * "base" pages for the rest. 936 */ 937 curbuf = (vaddr_t) buffers + (i * MAXBSIZE); 938 curbufsize = CLBYTES * ((i < residual) ? (base+1) : base); 939 940 while (curbufsize) { 941 pg = uvm_pagealloc(NULL, 0, NULL, 0); 942 if (pg == NULL) 943 panic("cpu_startup: not enough memory for " 944 "buffer cache"); 945 pmap_kenter_pa(curbuf, VM_PAGE_TO_PHYS(pg), 946 VM_PROT_READ|VM_PROT_WRITE); 947 curbuf += PAGE_SIZE; 948 curbufsize -= PAGE_SIZE; 949 } 950 } 951 /* 952 * Allocate a submap for exec arguments. This map effectively 953 * limits the number of processes exec'ing at any time. 954 */ 955 exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 956 16 * NCARGS, VM_MAP_PAGEABLE, FALSE, NULL); 957 958 /* 959 * Allocate a submap for physio 960 */ 961 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 962 VM_PHYS_SIZE, 0, FALSE, NULL); 963 964 /* 965 * No need to allocate an mbuf cluster submap. Mbuf clusters 966 * are allocated via the pool allocator, and we use K0SEG to 967 * map those pages. 968 */ 969 970 /* 971 * Initialize callouts 972 */ 973 callfree = callout; 974 for (i = 1; i < ncallout; i++) 975 callout[i-1].c_next = &callout[i]; 976 callout[i-1].c_next = NULL; 977 978 #if defined(DEBUG) 979 pmapdebug = opmapdebug; 980 #endif 981 format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 982 printf("avail memory = %s\n", pbuf); 983 #if 0 984 { 985 extern u_long pmap_pages_stolen; 986 987 format_bytes(pbuf, sizeof(pbuf), pmap_pages_stolen * PAGE_SIZE); 988 printf("stolen memory for VM structures = %s\n", pbuf); 989 } 990 #endif 991 format_bytes(pbuf, sizeof(pbuf), bufpages * CLBYTES); 992 printf("using %ld buffers containing %s of memory\n", (long)nbuf, pbuf); 993 994 /* 995 * Set up buffers, so they can be used to read disk labels. 996 */ 997 bufinit(); 998 999 /* 1000 * Set up the HWPCB so that it's safe to configure secondary 1001 * CPUs. 1002 */ 1003 hwrpb_primary_init(); 1004 } 1005 1006 /* 1007 * Retrieve the platform name from the DSR. 1008 */ 1009 const char * 1010 alpha_dsr_sysname() 1011 { 1012 struct dsrdb *dsr; 1013 const char *sysname; 1014 1015 /* 1016 * DSR does not exist on early HWRPB versions. 1017 */ 1018 if (hwrpb->rpb_version < HWRPB_DSRDB_MINVERS) 1019 return (NULL); 1020 1021 dsr = (struct dsrdb *)(((caddr_t)hwrpb) + hwrpb->rpb_dsrdb_off); 1022 sysname = (const char *)((caddr_t)dsr + (dsr->dsr_sysname_off + 1023 sizeof(u_int64_t))); 1024 return (sysname); 1025 } 1026 1027 /* 1028 * Lookup the system specified system variation in the provided table, 1029 * returning the model string on match. 1030 */ 1031 const char * 1032 alpha_variation_name(variation, avtp) 1033 u_int64_t variation; 1034 const struct alpha_variation_table *avtp; 1035 { 1036 int i; 1037 1038 for (i = 0; avtp[i].avt_model != NULL; i++) 1039 if (avtp[i].avt_variation == variation) 1040 return (avtp[i].avt_model); 1041 return (NULL); 1042 } 1043 1044 /* 1045 * Generate a default platform name based for unknown system variations. 1046 */ 1047 const char * 1048 alpha_unknown_sysname() 1049 { 1050 static char s[128]; /* safe size */ 1051 1052 sprintf(s, "%s family, unknown model variation 0x%lx", 1053 platform.family, hwrpb->rpb_variation & SV_ST_MASK); 1054 return ((const char *)s); 1055 } 1056 1057 void 1058 identifycpu() 1059 { 1060 char *s; 1061 1062 /* 1063 * print out CPU identification information. 1064 */ 1065 printf("%s", cpu_model); 1066 for(s = cpu_model; *s; ++s) 1067 if(strncasecmp(s, "MHz", 3) == 0) 1068 goto skipMHz; 1069 printf(", %ldMHz", hwrpb->rpb_cc_freq / 1000000); 1070 skipMHz: 1071 printf("\n"); 1072 printf("%ld byte page size, %d processor%s.\n", 1073 hwrpb->rpb_page_size, ncpus, ncpus == 1 ? "" : "s"); 1074 #if 0 1075 /* this isn't defined for any systems that we run on? */ 1076 printf("serial number 0x%lx 0x%lx\n", 1077 ((long *)hwrpb->rpb_ssn)[0], ((long *)hwrpb->rpb_ssn)[1]); 1078 1079 /* and these aren't particularly useful! */ 1080 printf("variation: 0x%lx, revision 0x%lx\n", 1081 hwrpb->rpb_variation, *(long *)hwrpb->rpb_revision); 1082 #endif 1083 } 1084 1085 int waittime = -1; 1086 struct pcb dumppcb; 1087 1088 void 1089 cpu_reboot(howto, bootstr) 1090 int howto; 1091 char *bootstr; 1092 { 1093 #if defined(MULTIPROCESSOR) 1094 #if 0 /* XXX See below. */ 1095 u_long cpu_id; 1096 #endif 1097 #endif 1098 1099 #if defined(MULTIPROCESSOR) 1100 /* We must be running on the primary CPU. */ 1101 if (alpha_pal_whami() != hwrpb->rpb_primary_cpu_id) 1102 panic("cpu_reboot: not on primary CPU!"); 1103 #endif 1104 1105 /* If system is cold, just halt. */ 1106 if (cold) { 1107 howto |= RB_HALT; 1108 goto haltsys; 1109 } 1110 1111 /* If "always halt" was specified as a boot flag, obey. */ 1112 if ((boothowto & RB_HALT) != 0) 1113 howto |= RB_HALT; 1114 1115 boothowto = howto; 1116 if ((howto & RB_NOSYNC) == 0 && waittime < 0) { 1117 waittime = 0; 1118 vfs_shutdown(); 1119 /* 1120 * If we've been adjusting the clock, the todr 1121 * will be out of synch; adjust it now. 1122 */ 1123 resettodr(); 1124 } 1125 1126 /* Disable interrupts. */ 1127 splhigh(); 1128 1129 /* If rebooting and a dump is requested do it. */ 1130 #if 0 1131 if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP) 1132 #else 1133 if (howto & RB_DUMP) 1134 #endif 1135 dumpsys(); 1136 1137 haltsys: 1138 1139 /* run any shutdown hooks */ 1140 doshutdownhooks(); 1141 1142 #if defined(MULTIPROCESSOR) 1143 #if 0 /* XXX doesn't work when called from here?! */ 1144 /* Kill off any secondary CPUs. */ 1145 for (cpu_id = 0; cpu_id < hwrpb->rpb_pcs_cnt; cpu_id++) { 1146 if (cpu_id == hwrpb->rpb_primary_cpu_id || 1147 cpu_info[cpu_id].ci_softc == NULL) 1148 continue; 1149 cpu_halt_secondary(cpu_id); 1150 } 1151 #endif 1152 #endif 1153 1154 #ifdef BOOTKEY 1155 printf("hit any key to %s...\n", howto & RB_HALT ? "halt" : "reboot"); 1156 cnpollc(1); /* for proper keyboard command handling */ 1157 cngetc(); 1158 cnpollc(0); 1159 printf("\n"); 1160 #endif 1161 1162 /* Finally, powerdown/halt/reboot the system. */ 1163 if ((howto & RB_POWERDOWN) == RB_POWERDOWN && 1164 platform.powerdown != NULL) { 1165 (*platform.powerdown)(); 1166 printf("WARNING: powerdown failed!\n"); 1167 } 1168 printf("%s\n\n", howto & RB_HALT ? "halted." : "rebooting..."); 1169 prom_halt(howto & RB_HALT); 1170 /*NOTREACHED*/ 1171 } 1172 1173 /* 1174 * These variables are needed by /sbin/savecore 1175 */ 1176 u_long dumpmag = 0x8fca0101; /* magic number */ 1177 int dumpsize = 0; /* pages */ 1178 long dumplo = 0; /* blocks */ 1179 1180 /* 1181 * cpu_dumpsize: calculate size of machine-dependent kernel core dump headers. 1182 */ 1183 int 1184 cpu_dumpsize() 1185 { 1186 int size; 1187 1188 size = ALIGN(sizeof(kcore_seg_t)) + ALIGN(sizeof(cpu_kcore_hdr_t)) + 1189 ALIGN(mem_cluster_cnt * sizeof(phys_ram_seg_t)); 1190 if (roundup(size, dbtob(1)) != dbtob(1)) 1191 return -1; 1192 1193 return (1); 1194 } 1195 1196 /* 1197 * cpu_dump_mempagecnt: calculate size of RAM (in pages) to be dumped. 1198 */ 1199 u_long 1200 cpu_dump_mempagecnt() 1201 { 1202 u_long i, n; 1203 1204 n = 0; 1205 for (i = 0; i < mem_cluster_cnt; i++) 1206 n += atop(mem_clusters[i].size); 1207 return (n); 1208 } 1209 1210 /* 1211 * cpu_dump: dump machine-dependent kernel core dump headers. 1212 */ 1213 int 1214 cpu_dump() 1215 { 1216 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1217 char buf[dbtob(1)]; 1218 kcore_seg_t *segp; 1219 cpu_kcore_hdr_t *cpuhdrp; 1220 phys_ram_seg_t *memsegp; 1221 int i; 1222 1223 dump = bdevsw[major(dumpdev)].d_dump; 1224 1225 bzero(buf, sizeof buf); 1226 segp = (kcore_seg_t *)buf; 1227 cpuhdrp = (cpu_kcore_hdr_t *)&buf[ALIGN(sizeof(*segp))]; 1228 memsegp = (phys_ram_seg_t *)&buf[ ALIGN(sizeof(*segp)) + 1229 ALIGN(sizeof(*cpuhdrp))]; 1230 1231 /* 1232 * Generate a segment header. 1233 */ 1234 CORE_SETMAGIC(*segp, KCORE_MAGIC, MID_MACHINE, CORE_CPU); 1235 segp->c_size = dbtob(1) - ALIGN(sizeof(*segp)); 1236 1237 /* 1238 * Add the machine-dependent header info. 1239 */ 1240 cpuhdrp->lev1map_pa = ALPHA_K0SEG_TO_PHYS((vaddr_t)kernel_lev1map); 1241 cpuhdrp->page_size = PAGE_SIZE; 1242 cpuhdrp->nmemsegs = mem_cluster_cnt; 1243 1244 /* 1245 * Fill in the memory segment descriptors. 1246 */ 1247 for (i = 0; i < mem_cluster_cnt; i++) { 1248 memsegp[i].start = mem_clusters[i].start; 1249 memsegp[i].size = mem_clusters[i].size & ~PAGE_MASK; 1250 } 1251 1252 return (dump(dumpdev, dumplo, (caddr_t)buf, dbtob(1))); 1253 } 1254 1255 /* 1256 * This is called by main to set dumplo and dumpsize. 1257 * Dumps always skip the first CLBYTES of disk space 1258 * in case there might be a disk label stored there. 1259 * If there is extra space, put dump at the end to 1260 * reduce the chance that swapping trashes it. 1261 */ 1262 void 1263 cpu_dumpconf() 1264 { 1265 int nblks, dumpblks; /* size of dump area */ 1266 int maj; 1267 1268 if (dumpdev == NODEV) 1269 goto bad; 1270 maj = major(dumpdev); 1271 if (maj < 0 || maj >= nblkdev) 1272 panic("dumpconf: bad dumpdev=0x%x", dumpdev); 1273 if (bdevsw[maj].d_psize == NULL) 1274 goto bad; 1275 nblks = (*bdevsw[maj].d_psize)(dumpdev); 1276 if (nblks <= ctod(1)) 1277 goto bad; 1278 1279 dumpblks = cpu_dumpsize(); 1280 if (dumpblks < 0) 1281 goto bad; 1282 dumpblks += ctod(cpu_dump_mempagecnt()); 1283 1284 /* If dump won't fit (incl. room for possible label), punt. */ 1285 if (dumpblks > (nblks - ctod(1))) 1286 goto bad; 1287 1288 /* Put dump at end of partition */ 1289 dumplo = nblks - dumpblks; 1290 1291 /* dumpsize is in page units, and doesn't include headers. */ 1292 dumpsize = cpu_dump_mempagecnt(); 1293 return; 1294 1295 bad: 1296 dumpsize = 0; 1297 return; 1298 } 1299 1300 /* 1301 * Dump the kernel's image to the swap partition. 1302 */ 1303 #define BYTES_PER_DUMP NBPG 1304 1305 void 1306 dumpsys() 1307 { 1308 u_long totalbytesleft, bytes, i, n, memcl; 1309 u_long maddr; 1310 int psize; 1311 daddr_t blkno; 1312 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1313 int error; 1314 1315 /* Save registers. */ 1316 savectx(&dumppcb); 1317 1318 msgbufenabled = 0; /* don't record dump msgs in msgbuf */ 1319 if (dumpdev == NODEV) 1320 return; 1321 1322 /* 1323 * For dumps during autoconfiguration, 1324 * if dump device has already configured... 1325 */ 1326 if (dumpsize == 0) 1327 cpu_dumpconf(); 1328 if (dumplo <= 0) { 1329 printf("\ndump to dev %u,%u not possible\n", major(dumpdev), 1330 minor(dumpdev)); 1331 return; 1332 } 1333 printf("\ndumping to dev %u,%u offset %ld\n", major(dumpdev), 1334 minor(dumpdev), dumplo); 1335 1336 psize = (*bdevsw[major(dumpdev)].d_psize)(dumpdev); 1337 printf("dump "); 1338 if (psize == -1) { 1339 printf("area unavailable\n"); 1340 return; 1341 } 1342 1343 /* XXX should purge all outstanding keystrokes. */ 1344 1345 if ((error = cpu_dump()) != 0) 1346 goto err; 1347 1348 totalbytesleft = ptoa(cpu_dump_mempagecnt()); 1349 blkno = dumplo + cpu_dumpsize(); 1350 dump = bdevsw[major(dumpdev)].d_dump; 1351 error = 0; 1352 1353 for (memcl = 0; memcl < mem_cluster_cnt; memcl++) { 1354 maddr = mem_clusters[memcl].start; 1355 bytes = mem_clusters[memcl].size & ~PAGE_MASK; 1356 1357 for (i = 0; i < bytes; i += n, totalbytesleft -= n) { 1358 1359 /* Print out how many MBs we to go. */ 1360 if ((totalbytesleft % (1024*1024)) == 0) 1361 printf("%ld ", totalbytesleft / (1024 * 1024)); 1362 1363 /* Limit size for next transfer. */ 1364 n = bytes - i; 1365 if (n > BYTES_PER_DUMP) 1366 n = BYTES_PER_DUMP; 1367 1368 error = (*dump)(dumpdev, blkno, 1369 (caddr_t)ALPHA_PHYS_TO_K0SEG(maddr), n); 1370 if (error) 1371 goto err; 1372 maddr += n; 1373 blkno += btodb(n); /* XXX? */ 1374 1375 /* XXX should look for keystrokes, to cancel. */ 1376 } 1377 } 1378 1379 err: 1380 switch (error) { 1381 1382 case ENXIO: 1383 printf("device bad\n"); 1384 break; 1385 1386 case EFAULT: 1387 printf("device not ready\n"); 1388 break; 1389 1390 case EINVAL: 1391 printf("area improper\n"); 1392 break; 1393 1394 case EIO: 1395 printf("i/o error\n"); 1396 break; 1397 1398 case EINTR: 1399 printf("aborted from console\n"); 1400 break; 1401 1402 case 0: 1403 printf("succeeded\n"); 1404 break; 1405 1406 default: 1407 printf("error %d\n", error); 1408 break; 1409 } 1410 printf("\n\n"); 1411 delay(1000); 1412 } 1413 1414 void 1415 frametoreg(framep, regp) 1416 struct trapframe *framep; 1417 struct reg *regp; 1418 { 1419 1420 regp->r_regs[R_V0] = framep->tf_regs[FRAME_V0]; 1421 regp->r_regs[R_T0] = framep->tf_regs[FRAME_T0]; 1422 regp->r_regs[R_T1] = framep->tf_regs[FRAME_T1]; 1423 regp->r_regs[R_T2] = framep->tf_regs[FRAME_T2]; 1424 regp->r_regs[R_T3] = framep->tf_regs[FRAME_T3]; 1425 regp->r_regs[R_T4] = framep->tf_regs[FRAME_T4]; 1426 regp->r_regs[R_T5] = framep->tf_regs[FRAME_T5]; 1427 regp->r_regs[R_T6] = framep->tf_regs[FRAME_T6]; 1428 regp->r_regs[R_T7] = framep->tf_regs[FRAME_T7]; 1429 regp->r_regs[R_S0] = framep->tf_regs[FRAME_S0]; 1430 regp->r_regs[R_S1] = framep->tf_regs[FRAME_S1]; 1431 regp->r_regs[R_S2] = framep->tf_regs[FRAME_S2]; 1432 regp->r_regs[R_S3] = framep->tf_regs[FRAME_S3]; 1433 regp->r_regs[R_S4] = framep->tf_regs[FRAME_S4]; 1434 regp->r_regs[R_S5] = framep->tf_regs[FRAME_S5]; 1435 regp->r_regs[R_S6] = framep->tf_regs[FRAME_S6]; 1436 regp->r_regs[R_A0] = framep->tf_regs[FRAME_A0]; 1437 regp->r_regs[R_A1] = framep->tf_regs[FRAME_A1]; 1438 regp->r_regs[R_A2] = framep->tf_regs[FRAME_A2]; 1439 regp->r_regs[R_A3] = framep->tf_regs[FRAME_A3]; 1440 regp->r_regs[R_A4] = framep->tf_regs[FRAME_A4]; 1441 regp->r_regs[R_A5] = framep->tf_regs[FRAME_A5]; 1442 regp->r_regs[R_T8] = framep->tf_regs[FRAME_T8]; 1443 regp->r_regs[R_T9] = framep->tf_regs[FRAME_T9]; 1444 regp->r_regs[R_T10] = framep->tf_regs[FRAME_T10]; 1445 regp->r_regs[R_T11] = framep->tf_regs[FRAME_T11]; 1446 regp->r_regs[R_RA] = framep->tf_regs[FRAME_RA]; 1447 regp->r_regs[R_T12] = framep->tf_regs[FRAME_T12]; 1448 regp->r_regs[R_AT] = framep->tf_regs[FRAME_AT]; 1449 regp->r_regs[R_GP] = framep->tf_regs[FRAME_GP]; 1450 /* regp->r_regs[R_SP] = framep->tf_regs[FRAME_SP]; XXX */ 1451 regp->r_regs[R_ZERO] = 0; 1452 } 1453 1454 void 1455 regtoframe(regp, framep) 1456 struct reg *regp; 1457 struct trapframe *framep; 1458 { 1459 1460 framep->tf_regs[FRAME_V0] = regp->r_regs[R_V0]; 1461 framep->tf_regs[FRAME_T0] = regp->r_regs[R_T0]; 1462 framep->tf_regs[FRAME_T1] = regp->r_regs[R_T1]; 1463 framep->tf_regs[FRAME_T2] = regp->r_regs[R_T2]; 1464 framep->tf_regs[FRAME_T3] = regp->r_regs[R_T3]; 1465 framep->tf_regs[FRAME_T4] = regp->r_regs[R_T4]; 1466 framep->tf_regs[FRAME_T5] = regp->r_regs[R_T5]; 1467 framep->tf_regs[FRAME_T6] = regp->r_regs[R_T6]; 1468 framep->tf_regs[FRAME_T7] = regp->r_regs[R_T7]; 1469 framep->tf_regs[FRAME_S0] = regp->r_regs[R_S0]; 1470 framep->tf_regs[FRAME_S1] = regp->r_regs[R_S1]; 1471 framep->tf_regs[FRAME_S2] = regp->r_regs[R_S2]; 1472 framep->tf_regs[FRAME_S3] = regp->r_regs[R_S3]; 1473 framep->tf_regs[FRAME_S4] = regp->r_regs[R_S4]; 1474 framep->tf_regs[FRAME_S5] = regp->r_regs[R_S5]; 1475 framep->tf_regs[FRAME_S6] = regp->r_regs[R_S6]; 1476 framep->tf_regs[FRAME_A0] = regp->r_regs[R_A0]; 1477 framep->tf_regs[FRAME_A1] = regp->r_regs[R_A1]; 1478 framep->tf_regs[FRAME_A2] = regp->r_regs[R_A2]; 1479 framep->tf_regs[FRAME_A3] = regp->r_regs[R_A3]; 1480 framep->tf_regs[FRAME_A4] = regp->r_regs[R_A4]; 1481 framep->tf_regs[FRAME_A5] = regp->r_regs[R_A5]; 1482 framep->tf_regs[FRAME_T8] = regp->r_regs[R_T8]; 1483 framep->tf_regs[FRAME_T9] = regp->r_regs[R_T9]; 1484 framep->tf_regs[FRAME_T10] = regp->r_regs[R_T10]; 1485 framep->tf_regs[FRAME_T11] = regp->r_regs[R_T11]; 1486 framep->tf_regs[FRAME_RA] = regp->r_regs[R_RA]; 1487 framep->tf_regs[FRAME_T12] = regp->r_regs[R_T12]; 1488 framep->tf_regs[FRAME_AT] = regp->r_regs[R_AT]; 1489 framep->tf_regs[FRAME_GP] = regp->r_regs[R_GP]; 1490 /* framep->tf_regs[FRAME_SP] = regp->r_regs[R_SP]; XXX */ 1491 /* ??? = regp->r_regs[R_ZERO]; */ 1492 } 1493 1494 void 1495 printregs(regp) 1496 struct reg *regp; 1497 { 1498 int i; 1499 1500 for (i = 0; i < 32; i++) 1501 printf("R%d:\t0x%016lx%s", i, regp->r_regs[i], 1502 i & 1 ? "\n" : "\t"); 1503 } 1504 1505 void 1506 regdump(framep) 1507 struct trapframe *framep; 1508 { 1509 struct reg reg; 1510 1511 frametoreg(framep, ®); 1512 reg.r_regs[R_SP] = alpha_pal_rdusp(); 1513 1514 printf("REGISTERS:\n"); 1515 printregs(®); 1516 } 1517 1518 #ifdef DEBUG 1519 int sigdebug = 0; 1520 int sigpid = 0; 1521 #define SDB_FOLLOW 0x01 1522 #define SDB_KSTACK 0x02 1523 #endif 1524 1525 /* 1526 * Send an interrupt to process. 1527 */ 1528 void 1529 sendsig(catcher, sig, mask, code) 1530 sig_t catcher; 1531 int sig; 1532 sigset_t *mask; 1533 u_long code; 1534 { 1535 struct proc *p = curproc; 1536 struct sigcontext *scp, ksc; 1537 struct trapframe *frame; 1538 struct sigacts *psp = p->p_sigacts; 1539 int onstack, fsize, rndfsize; 1540 1541 frame = p->p_md.md_tf; 1542 1543 /* Do we need to jump onto the signal stack? */ 1544 onstack = 1545 (psp->ps_sigstk.ss_flags & (SS_DISABLE | SS_ONSTACK)) == 0 && 1546 (psp->ps_sigact[sig].sa_flags & SA_ONSTACK) != 0; 1547 1548 /* Allocate space for the signal handler context. */ 1549 fsize = sizeof(ksc); 1550 rndfsize = ((fsize + 15) / 16) * 16; 1551 1552 if (onstack) 1553 scp = (struct sigcontext *)((caddr_t)psp->ps_sigstk.ss_sp + 1554 psp->ps_sigstk.ss_size); 1555 else 1556 scp = (struct sigcontext *)(alpha_pal_rdusp()); 1557 scp = (struct sigcontext *)((caddr_t)scp - rndfsize); 1558 1559 #ifdef DEBUG 1560 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1561 printf("sendsig(%d): sig %d ssp %p usp %p\n", p->p_pid, 1562 sig, &onstack, scp); 1563 #endif 1564 1565 /* Build stack frame for signal trampoline. */ 1566 ksc.sc_pc = frame->tf_regs[FRAME_PC]; 1567 ksc.sc_ps = frame->tf_regs[FRAME_PS]; 1568 1569 /* Save register context. */ 1570 frametoreg(frame, (struct reg *)ksc.sc_regs); 1571 ksc.sc_regs[R_ZERO] = 0xACEDBADE; /* magic number */ 1572 ksc.sc_regs[R_SP] = alpha_pal_rdusp(); 1573 1574 /* save the floating-point state, if necessary, then copy it. */ 1575 if (p == fpcurproc) { 1576 alpha_pal_wrfen(1); 1577 savefpstate(&p->p_addr->u_pcb.pcb_fp); 1578 alpha_pal_wrfen(0); 1579 fpcurproc = NULL; 1580 } 1581 ksc.sc_ownedfp = p->p_md.md_flags & MDP_FPUSED; 1582 bcopy(&p->p_addr->u_pcb.pcb_fp, (struct fpreg *)ksc.sc_fpregs, 1583 sizeof(struct fpreg)); 1584 ksc.sc_fp_control = 0; /* XXX ? */ 1585 bzero(ksc.sc_reserved, sizeof ksc.sc_reserved); /* XXX */ 1586 bzero(ksc.sc_xxx, sizeof ksc.sc_xxx); /* XXX */ 1587 1588 /* Save signal stack. */ 1589 ksc.sc_onstack = psp->ps_sigstk.ss_flags & SS_ONSTACK; 1590 1591 /* Save signal mask. */ 1592 ksc.sc_mask = *mask; 1593 1594 #ifdef COMPAT_13 1595 /* 1596 * XXX We always have to save an old style signal mask because 1597 * XXX we might be delivering a signal to a process which will 1598 * XXX escape from the signal in a non-standard way and invoke 1599 * XXX sigreturn() directly. 1600 */ 1601 { 1602 /* Note: it's a long in the stack frame. */ 1603 sigset13_t mask13; 1604 1605 native_sigset_to_sigset13(mask, &mask13); 1606 ksc.__sc_mask13 = mask13; 1607 } 1608 #endif 1609 1610 #ifdef COMPAT_OSF1 1611 /* 1612 * XXX Create an OSF/1-style sigcontext and associated goo. 1613 */ 1614 #endif 1615 1616 if (copyout(&ksc, (caddr_t)scp, fsize) != 0) { 1617 /* 1618 * Process has trashed its stack; give it an illegal 1619 * instruction to halt it in its tracks. 1620 */ 1621 #ifdef DEBUG 1622 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1623 printf("sendsig(%d): copyout failed on sig %d\n", 1624 p->p_pid, sig); 1625 #endif 1626 sigexit(p, SIGILL); 1627 /* NOTREACHED */ 1628 } 1629 #ifdef DEBUG 1630 if (sigdebug & SDB_FOLLOW) 1631 printf("sendsig(%d): sig %d scp %p code %lx\n", p->p_pid, sig, 1632 scp, code); 1633 #endif 1634 1635 /* Set up the registers to return to sigcode. */ 1636 frame->tf_regs[FRAME_PC] = (u_int64_t)psp->ps_sigcode; 1637 frame->tf_regs[FRAME_A0] = sig; 1638 frame->tf_regs[FRAME_A1] = code; 1639 frame->tf_regs[FRAME_A2] = (u_int64_t)scp; 1640 frame->tf_regs[FRAME_T12] = (u_int64_t)catcher; /* t12 is pv */ 1641 alpha_pal_wrusp((unsigned long)scp); 1642 1643 /* Remember that we're now on the signal stack. */ 1644 if (onstack) 1645 psp->ps_sigstk.ss_flags |= SS_ONSTACK; 1646 1647 #ifdef DEBUG 1648 if (sigdebug & SDB_FOLLOW) 1649 printf("sendsig(%d): pc %lx, catcher %lx\n", p->p_pid, 1650 frame->tf_regs[FRAME_PC], frame->tf_regs[FRAME_A3]); 1651 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1652 printf("sendsig(%d): sig %d returns\n", 1653 p->p_pid, sig); 1654 #endif 1655 } 1656 1657 /* 1658 * System call to cleanup state after a signal 1659 * has been taken. Reset signal mask and 1660 * stack state from context left by sendsig (above). 1661 * Return to previous pc and psl as specified by 1662 * context left by sendsig. Check carefully to 1663 * make sure that the user has not modified the 1664 * psl to gain improper privileges or to cause 1665 * a machine fault. 1666 */ 1667 /* ARGSUSED */ 1668 int 1669 sys___sigreturn14(p, v, retval) 1670 struct proc *p; 1671 void *v; 1672 register_t *retval; 1673 { 1674 struct sys___sigreturn14_args /* { 1675 syscallarg(struct sigcontext *) sigcntxp; 1676 } */ *uap = v; 1677 struct sigcontext *scp, ksc; 1678 1679 /* 1680 * The trampoline code hands us the context. 1681 * It is unsafe to keep track of it ourselves, in the event that a 1682 * program jumps out of a signal handler. 1683 */ 1684 scp = SCARG(uap, sigcntxp); 1685 #ifdef DEBUG 1686 if (sigdebug & SDB_FOLLOW) 1687 printf("sigreturn: pid %d, scp %p\n", p->p_pid, scp); 1688 #endif 1689 if (ALIGN(scp) != (u_int64_t)scp) 1690 return (EINVAL); 1691 1692 if (copyin((caddr_t)scp, &ksc, sizeof(ksc)) != 0) 1693 return (EFAULT); 1694 1695 if (ksc.sc_regs[R_ZERO] != 0xACEDBADE) /* magic number */ 1696 return (EINVAL); 1697 1698 /* Restore register context. */ 1699 p->p_md.md_tf->tf_regs[FRAME_PC] = ksc.sc_pc; 1700 p->p_md.md_tf->tf_regs[FRAME_PS] = 1701 (ksc.sc_ps | ALPHA_PSL_USERSET) & ~ALPHA_PSL_USERCLR; 1702 1703 regtoframe((struct reg *)ksc.sc_regs, p->p_md.md_tf); 1704 alpha_pal_wrusp(ksc.sc_regs[R_SP]); 1705 1706 /* XXX ksc.sc_ownedfp ? */ 1707 if (p == fpcurproc) 1708 fpcurproc = NULL; 1709 bcopy((struct fpreg *)ksc.sc_fpregs, &p->p_addr->u_pcb.pcb_fp, 1710 sizeof(struct fpreg)); 1711 /* XXX ksc.sc_fp_control ? */ 1712 1713 /* Restore signal stack. */ 1714 if (ksc.sc_onstack & SS_ONSTACK) 1715 p->p_sigacts->ps_sigstk.ss_flags |= SS_ONSTACK; 1716 else 1717 p->p_sigacts->ps_sigstk.ss_flags &= ~SS_ONSTACK; 1718 1719 /* Restore signal mask. */ 1720 (void) sigprocmask1(p, SIG_SETMASK, &ksc.sc_mask, 0); 1721 1722 #ifdef DEBUG 1723 if (sigdebug & SDB_FOLLOW) 1724 printf("sigreturn(%d): returns\n", p->p_pid); 1725 #endif 1726 return (EJUSTRETURN); 1727 } 1728 1729 /* 1730 * machine dependent system variables. 1731 */ 1732 int 1733 cpu_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 1734 int *name; 1735 u_int namelen; 1736 void *oldp; 1737 size_t *oldlenp; 1738 void *newp; 1739 size_t newlen; 1740 struct proc *p; 1741 { 1742 dev_t consdev; 1743 1744 /* all sysctl names at this level are terminal */ 1745 if (namelen != 1) 1746 return (ENOTDIR); /* overloaded */ 1747 1748 switch (name[0]) { 1749 case CPU_CONSDEV: 1750 if (cn_tab != NULL) 1751 consdev = cn_tab->cn_dev; 1752 else 1753 consdev = NODEV; 1754 return (sysctl_rdstruct(oldp, oldlenp, newp, &consdev, 1755 sizeof consdev)); 1756 1757 case CPU_ROOT_DEVICE: 1758 return (sysctl_rdstring(oldp, oldlenp, newp, 1759 root_device->dv_xname)); 1760 1761 case CPU_UNALIGNED_PRINT: 1762 return (sysctl_int(oldp, oldlenp, newp, newlen, 1763 &alpha_unaligned_print)); 1764 1765 case CPU_UNALIGNED_FIX: 1766 return (sysctl_int(oldp, oldlenp, newp, newlen, 1767 &alpha_unaligned_fix)); 1768 1769 case CPU_UNALIGNED_SIGBUS: 1770 return (sysctl_int(oldp, oldlenp, newp, newlen, 1771 &alpha_unaligned_sigbus)); 1772 1773 case CPU_BOOTED_KERNEL: 1774 return (sysctl_rdstring(oldp, oldlenp, newp, 1775 bootinfo.booted_kernel)); 1776 1777 default: 1778 return (EOPNOTSUPP); 1779 } 1780 /* NOTREACHED */ 1781 } 1782 1783 /* 1784 * Set registers on exec. 1785 */ 1786 void 1787 setregs(p, pack, stack) 1788 register struct proc *p; 1789 struct exec_package *pack; 1790 u_long stack; 1791 { 1792 struct trapframe *tfp = p->p_md.md_tf; 1793 #ifdef DEBUG 1794 int i; 1795 #endif 1796 1797 #ifdef DEBUG 1798 /* 1799 * Crash and dump, if the user requested it. 1800 */ 1801 if (boothowto & RB_DUMP) 1802 panic("crash requested by boot flags"); 1803 #endif 1804 1805 #ifdef DEBUG 1806 for (i = 0; i < FRAME_SIZE; i++) 1807 tfp->tf_regs[i] = 0xbabefacedeadbeef; 1808 #else 1809 bzero(tfp->tf_regs, FRAME_SIZE * sizeof tfp->tf_regs[0]); 1810 #endif 1811 bzero(&p->p_addr->u_pcb.pcb_fp, sizeof p->p_addr->u_pcb.pcb_fp); 1812 p->p_addr->u_pcb.pcb_fp.fpr_cr = FPCR_INED 1813 | FPCR_UNFD 1814 | FPCR_UNDZ 1815 | FPCR_DYN(FP_RN) 1816 | FPCR_OVFD 1817 | FPCR_DZED 1818 | FPCR_INVD 1819 | FPCR_DNZ; 1820 alpha_pal_wrusp(stack); 1821 tfp->tf_regs[FRAME_PS] = ALPHA_PSL_USERSET; 1822 tfp->tf_regs[FRAME_PC] = pack->ep_entry & ~3; 1823 1824 tfp->tf_regs[FRAME_A0] = stack; /* a0 = sp */ 1825 tfp->tf_regs[FRAME_A1] = 0; /* a1 = rtld cleanup */ 1826 tfp->tf_regs[FRAME_A2] = 0; /* a2 = rtld object */ 1827 tfp->tf_regs[FRAME_A3] = (u_int64_t)PS_STRINGS; /* a3 = ps_strings */ 1828 tfp->tf_regs[FRAME_T12] = tfp->tf_regs[FRAME_PC]; /* a.k.a. PV */ 1829 1830 p->p_md.md_flags &= ~MDP_FPUSED; 1831 if (fpcurproc == p) 1832 fpcurproc = NULL; 1833 } 1834 1835 void 1836 netintr() 1837 { 1838 int n, s; 1839 1840 s = splhigh(); 1841 n = netisr; 1842 netisr = 0; 1843 splx(s); 1844 1845 #define DONETISR(bit, fn) \ 1846 do { \ 1847 if (n & (1 << (bit))) \ 1848 fn; \ 1849 } while (0) 1850 1851 #ifdef INET 1852 #if NARP > 0 1853 DONETISR(NETISR_ARP, arpintr()); 1854 #endif 1855 DONETISR(NETISR_IP, ipintr()); 1856 #endif 1857 #ifdef INET6 1858 DONETISR(NETISR_IPV6, ip6intr()); 1859 #endif 1860 #ifdef NETATALK 1861 DONETISR(NETISR_ATALK, atintr()); 1862 #endif 1863 #ifdef NS 1864 DONETISR(NETISR_NS, nsintr()); 1865 #endif 1866 #ifdef ISO 1867 DONETISR(NETISR_ISO, clnlintr()); 1868 #endif 1869 #ifdef CCITT 1870 DONETISR(NETISR_CCITT, ccittintr()); 1871 #endif 1872 #ifdef NATM 1873 DONETISR(NETISR_NATM, natmintr()); 1874 #endif 1875 #if NPPP > 1 1876 DONETISR(NETISR_PPP, pppintr()); 1877 #endif 1878 1879 #undef DONETISR 1880 } 1881 1882 void 1883 do_sir() 1884 { 1885 u_int64_t n; 1886 1887 while ((n = alpha_atomic_loadlatch_q(&ssir, 0)) != 0) { 1888 #define COUNT_SOFT uvmexp.softs++ 1889 1890 #define DO_SIR(bit, fn) \ 1891 do { \ 1892 if (n & (bit)) { \ 1893 COUNT_SOFT; \ 1894 fn; \ 1895 } \ 1896 } while (0) 1897 1898 DO_SIR(SIR_NET, netintr()); 1899 DO_SIR(SIR_CLOCK, softclock()); 1900 #if NCOM > 0 1901 DO_SIR(SIR_SERIAL, comsoft()); 1902 #endif 1903 1904 #undef COUNT_SOFT 1905 #undef DO_SIR 1906 } 1907 } 1908 1909 int 1910 spl0() 1911 { 1912 1913 if (ssir) { 1914 (void) alpha_pal_swpipl(ALPHA_PSL_IPL_SOFT); 1915 do_sir(); 1916 } 1917 1918 return (alpha_pal_swpipl(ALPHA_PSL_IPL_0)); 1919 } 1920 1921 /* 1922 * The following primitives manipulate the run queues. _whichqs tells which 1923 * of the 32 queues _qs have processes in them. Setrunqueue puts processes 1924 * into queues, Remrunqueue removes them from queues. The running process is 1925 * on no queue, other processes are on a queue related to p->p_priority, 1926 * divided by 4 actually to shrink the 0-127 range of priorities into the 32 1927 * available queues. 1928 */ 1929 /* 1930 * setrunqueue(p) 1931 * proc *p; 1932 * 1933 * Call should be made at splclock(), and p->p_stat should be SRUN. 1934 */ 1935 1936 void 1937 setrunqueue(p) 1938 struct proc *p; 1939 { 1940 int bit; 1941 1942 /* firewall: p->p_back must be NULL */ 1943 if (p->p_back != NULL) 1944 panic("setrunqueue"); 1945 1946 bit = p->p_priority >> 2; 1947 whichqs |= (1 << bit); 1948 p->p_forw = (struct proc *)&qs[bit]; 1949 p->p_back = qs[bit].ph_rlink; 1950 p->p_back->p_forw = p; 1951 qs[bit].ph_rlink = p; 1952 } 1953 1954 /* 1955 * remrunqueue(p) 1956 * 1957 * Call should be made at splclock(). 1958 */ 1959 void 1960 remrunqueue(p) 1961 struct proc *p; 1962 { 1963 int bit; 1964 1965 bit = p->p_priority >> 2; 1966 if ((whichqs & (1 << bit)) == 0) 1967 panic("remrunqueue"); 1968 1969 p->p_back->p_forw = p->p_forw; 1970 p->p_forw->p_back = p->p_back; 1971 p->p_back = NULL; /* for firewall checking. */ 1972 1973 if ((struct proc *)&qs[bit] == qs[bit].ph_link) 1974 whichqs &= ~(1 << bit); 1975 } 1976 1977 /* 1978 * Return the best possible estimate of the time in the timeval 1979 * to which tvp points. Unfortunately, we can't read the hardware registers. 1980 * We guarantee that the time will be greater than the value obtained by a 1981 * previous call. 1982 */ 1983 void 1984 microtime(tvp) 1985 register struct timeval *tvp; 1986 { 1987 int s = splclock(); 1988 static struct timeval lasttime; 1989 1990 *tvp = time; 1991 #ifdef notdef 1992 tvp->tv_usec += clkread(); 1993 while (tvp->tv_usec > 1000000) { 1994 tvp->tv_sec++; 1995 tvp->tv_usec -= 1000000; 1996 } 1997 #endif 1998 if (tvp->tv_sec == lasttime.tv_sec && 1999 tvp->tv_usec <= lasttime.tv_usec && 2000 (tvp->tv_usec = lasttime.tv_usec + 1) > 1000000) { 2001 tvp->tv_sec++; 2002 tvp->tv_usec -= 1000000; 2003 } 2004 lasttime = *tvp; 2005 splx(s); 2006 } 2007 2008 /* 2009 * Wait "n" microseconds. 2010 */ 2011 void 2012 delay(n) 2013 unsigned long n; 2014 { 2015 long N = cycles_per_usec * (n); 2016 2017 while (N > 0) /* XXX */ 2018 N -= 3; /* XXX */ 2019 } 2020 2021 #if defined(COMPAT_OSF1) || 1 /* XXX */ 2022 void cpu_exec_ecoff_setregs __P((struct proc *, struct exec_package *, 2023 u_long)); 2024 2025 void 2026 cpu_exec_ecoff_setregs(p, epp, stack) 2027 struct proc *p; 2028 struct exec_package *epp; 2029 u_long stack; 2030 { 2031 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2032 2033 setregs(p, epp, stack); 2034 p->p_md.md_tf->tf_regs[FRAME_GP] = execp->a.gp_value; 2035 } 2036 2037 /* 2038 * cpu_exec_ecoff_hook(): 2039 * cpu-dependent ECOFF format hook for execve(). 2040 * 2041 * Do any machine-dependent diddling of the exec package when doing ECOFF. 2042 * 2043 */ 2044 int 2045 cpu_exec_ecoff_hook(p, epp) 2046 struct proc *p; 2047 struct exec_package *epp; 2048 { 2049 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2050 extern struct emul emul_netbsd; 2051 int error; 2052 extern int osf1_exec_ecoff_hook(struct proc *p, 2053 struct exec_package *epp); 2054 2055 switch (execp->f.f_magic) { 2056 #ifdef COMPAT_OSF1 2057 case ECOFF_MAGIC_ALPHA: 2058 error = osf1_exec_ecoff_hook(p, epp); 2059 break; 2060 #endif 2061 2062 case ECOFF_MAGIC_NETBSD_ALPHA: 2063 epp->ep_emul = &emul_netbsd; 2064 error = 0; 2065 break; 2066 2067 default: 2068 error = ENOEXEC; 2069 } 2070 return (error); 2071 } 2072 #endif 2073 2074 int 2075 alpha_pa_access(pa) 2076 u_long pa; 2077 { 2078 int i; 2079 2080 for (i = 0; i < mem_cluster_cnt; i++) { 2081 if (pa < mem_clusters[i].start) 2082 continue; 2083 if ((pa - mem_clusters[i].start) >= 2084 (mem_clusters[i].size & ~PAGE_MASK)) 2085 continue; 2086 return (mem_clusters[i].size & PAGE_MASK); /* prot */ 2087 } 2088 return (PROT_NONE); 2089 } 2090 2091 /* XXX XXX BEGIN XXX XXX */ 2092 paddr_t alpha_XXX_dmamap_or; /* XXX */ 2093 /* XXX */ 2094 paddr_t /* XXX */ 2095 alpha_XXX_dmamap(v) /* XXX */ 2096 vaddr_t v; /* XXX */ 2097 { /* XXX */ 2098 /* XXX */ 2099 return (vtophys(v) | alpha_XXX_dmamap_or); /* XXX */ 2100 } /* XXX */ 2101 /* XXX XXX END XXX XXX */ 2102 2103 struct mchkinfo * 2104 cpu_mchkinfo() 2105 { 2106 if (mchkinfo_all_cpus == NULL) 2107 return &startup_info; 2108 return mchkinfo_all_cpus + alpha_pal_whami(); 2109 } 2110 2111 char * 2112 dot_conv(x) 2113 unsigned long x; 2114 { 2115 int i; 2116 char *xc; 2117 static int next; 2118 static char space[2][20]; 2119 2120 xc = space[next ^= 1] + sizeof space[0]; 2121 *--xc = '\0'; 2122 for (i = 0;; ++i) { 2123 if (i && (i & 3) == 0) 2124 *--xc = '.'; 2125 *--xc = "0123456789abcdef"[x & 0xf]; 2126 x >>= 4; 2127 if (x == 0) 2128 break; 2129 } 2130 return xc; 2131 } 2132
Indexes created Thu Oct 02 01:09:59 GMT 2025