machdep.c revision 1.193
1 /* $NetBSD: machdep.c,v 1.193 2000/02/09 05:48:26 shin 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 1.193 2000/02/09 05:48:26 shin 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/malloc.h> 95 #include <sys/mbuf.h> 96 #include <sys/mman.h> 97 #include <sys/msgbuf.h> 98 #include <sys/ioctl.h> 99 #include <sys/tty.h> 100 #include <sys/user.h> 101 #include <sys/exec.h> 102 #include <sys/exec_ecoff.h> 103 #include <vm/vm.h> 104 #include <sys/sysctl.h> 105 #include <sys/core.h> 106 #include <sys/kcore.h> 107 #include <machine/kcore.h> 108 109 #include <sys/mount.h> 110 #include <sys/syscallargs.h> 111 112 #include <vm/vm_kern.h> 113 114 #include <uvm/uvm_extern.h> 115 116 #include <dev/cons.h> 117 118 #include <machine/autoconf.h> 119 #include <machine/cpu.h> 120 #include <machine/reg.h> 121 #include <machine/rpb.h> 122 #include <machine/prom.h> 123 #include <machine/conf.h> 124 #include <machine/ieeefp.h> 125 126 #include <net/netisr.h> 127 #include <net/if.h> 128 129 #ifdef INET 130 #include <net/route.h> 131 #include <netinet/in.h> 132 #include <netinet/ip_var.h> 133 #include "arp.h" 134 #if NARP > 0 135 #include <netinet/if_inarp.h> 136 #endif 137 #endif 138 #ifdef INET6 139 # ifndef INET 140 # include <netinet/in.h> 141 # endif 142 #include <netinet/ip6.h> 143 #include <netinet6/ip6_var.h> 144 #endif 145 #ifdef NS 146 #include <netns/ns_var.h> 147 #endif 148 #ifdef ISO 149 #include <netiso/iso.h> 150 #include <netiso/clnp.h> 151 #endif 152 #ifdef CCITT 153 #include <netccitt/x25.h> 154 #include <netccitt/pk.h> 155 #include <netccitt/pk_extern.h> 156 #endif 157 #ifdef NATM 158 #include <netnatm/natm.h> 159 #endif 160 #ifdef NETATALK 161 #include <netatalk/at_extern.h> 162 #endif 163 #include "ppp.h" 164 #if NPPP > 0 165 #include <net/ppp_defs.h> 166 #include <net/if_ppp.h> 167 #endif 168 169 #ifdef DDB 170 #include <machine/db_machdep.h> 171 #include <ddb/db_access.h> 172 #include <ddb/db_sym.h> 173 #include <ddb/db_extern.h> 174 #include <ddb/db_interface.h> 175 #endif 176 177 #include <machine/alpha.h> 178 #include <machine/intrcnt.h> 179 180 #include "com.h" 181 #if NCOM > 0 182 extern void comsoft __P((void)); 183 #endif 184 185 vm_map_t exec_map = NULL; 186 vm_map_t mb_map = NULL; 187 vm_map_t phys_map = NULL; 188 189 caddr_t msgbufaddr; 190 191 int maxmem; /* max memory per process */ 192 193 int totalphysmem; /* total amount of physical memory in system */ 194 int physmem; /* physical memory used by NetBSD + some rsvd */ 195 int resvmem; /* amount of memory reserved for PROM */ 196 int unusedmem; /* amount of memory for OS that we don't use */ 197 int unknownmem; /* amount of memory with an unknown use */ 198 199 int cputype; /* system type, from the RPB */ 200 201 /* 202 * XXX We need an address to which we can assign things so that they 203 * won't be optimized away because we didn't use the value. 204 */ 205 u_int32_t no_optimize; 206 207 /* the following is used externally (sysctl_hw) */ 208 char machine[] = MACHINE; /* from <machine/param.h> */ 209 char machine_arch[] = MACHINE_ARCH; /* from <machine/param.h> */ 210 char cpu_model[128]; 211 212 struct user *proc0paddr; 213 214 /* Number of machine cycles per microsecond */ 215 u_int64_t cycles_per_usec; 216 217 /* number of cpus in the box. really! */ 218 int ncpus; 219 220 /* machine check info array, valloc()'ed in mdallocsys() */ 221 222 static struct mchkinfo startup_info, 223 *mchkinfo_all_cpus; 224 225 struct bootinfo_kernel bootinfo; 226 227 /* For built-in TCDS */ 228 #if defined(DEC_3000_300) || defined(DEC_3000_500) 229 u_int8_t dec_3000_scsiid[2], dec_3000_scsifast[2]; 230 #endif 231 232 struct platform platform; 233 234 u_int32_t vm_kmem_size = _VM_KMEM_SIZE; 235 u_int32_t vm_phys_size = _VM_PHYS_SIZE; 236 237 #ifdef DDB 238 /* start and end of kernel symbol table */ 239 void *ksym_start, *ksym_end; 240 #endif 241 242 /* for cpu_sysctl() */ 243 int alpha_unaligned_print = 1; /* warn about unaligned accesses */ 244 int alpha_unaligned_fix = 1; /* fix up unaligned accesses */ 245 int alpha_unaligned_sigbus = 0; /* don't SIGBUS on fixed-up accesses */ 246 247 /* 248 * XXX This should be dynamically sized, but we have the chicken-egg problem! 249 * XXX it should also be larger than it is, because not all of the mddt 250 * XXX clusters end up being used for VM. 251 */ 252 phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX]; /* low size bits overloaded */ 253 int mem_cluster_cnt; 254 255 int cpu_dump __P((void)); 256 int cpu_dumpsize __P((void)); 257 u_long cpu_dump_mempagecnt __P((void)); 258 void dumpsys __P((void)); 259 void identifycpu __P((void)); 260 caddr_t mdallocsys __P((caddr_t)); 261 void netintr __P((void)); 262 void printregs __P((struct reg *)); 263 264 void 265 alpha_init(pfn, ptb, bim, bip, biv) 266 u_long pfn; /* first free PFN number */ 267 u_long ptb; /* PFN of current level 1 page table */ 268 u_long bim; /* bootinfo magic */ 269 u_long bip; /* bootinfo pointer */ 270 u_long biv; /* bootinfo version */ 271 { 272 extern char kernel_text[], _end[]; 273 struct mddt *mddtp; 274 struct mddt_cluster *memc; 275 int i, mddtweird; 276 struct vm_physseg *vps; 277 vaddr_t kernstart, kernend; 278 paddr_t kernstartpfn, kernendpfn, pfn0, pfn1; 279 vsize_t size; 280 char *p; 281 caddr_t v; 282 char *bootinfo_msg; 283 284 /* NO OUTPUT ALLOWED UNTIL FURTHER NOTICE */ 285 286 /* 287 * Turn off interrupts (not mchecks) and floating point. 288 * Make sure the instruction and data streams are consistent. 289 */ 290 (void)alpha_pal_swpipl(ALPHA_PSL_IPL_HIGH); 291 alpha_pal_wrfen(0); 292 ALPHA_TBIA(); 293 alpha_pal_imb(); 294 295 #if defined(MULTIPROCESSOR) 296 /* 297 * Set our SysValue to the address of our cpu_info structure. 298 * Secondary processors do this in their spinup trampoline. 299 */ 300 alpha_pal_wrval((u_long)&cpu_info[alpha_pal_whami()]); 301 #endif 302 303 /* 304 * Get critical system information (if possible, from the 305 * information provided by the boot program). 306 */ 307 bootinfo_msg = NULL; 308 if (bim == BOOTINFO_MAGIC) { 309 if (biv == 0) { /* backward compat */ 310 biv = *(u_long *)bip; 311 bip += 8; 312 } 313 switch (biv) { 314 case 1: { 315 struct bootinfo_v1 *v1p = (struct bootinfo_v1 *)bip; 316 317 bootinfo.ssym = v1p->ssym; 318 bootinfo.esym = v1p->esym; 319 /* hwrpb may not be provided by boot block in v1 */ 320 if (v1p->hwrpb != NULL) { 321 bootinfo.hwrpb_phys = 322 ((struct rpb *)v1p->hwrpb)->rpb_phys; 323 bootinfo.hwrpb_size = v1p->hwrpbsize; 324 } else { 325 bootinfo.hwrpb_phys = 326 ((struct rpb *)HWRPB_ADDR)->rpb_phys; 327 bootinfo.hwrpb_size = 328 ((struct rpb *)HWRPB_ADDR)->rpb_size; 329 } 330 bcopy(v1p->boot_flags, bootinfo.boot_flags, 331 min(sizeof v1p->boot_flags, 332 sizeof bootinfo.boot_flags)); 333 bcopy(v1p->booted_kernel, bootinfo.booted_kernel, 334 min(sizeof v1p->booted_kernel, 335 sizeof bootinfo.booted_kernel)); 336 /* booted dev not provided in bootinfo */ 337 init_prom_interface((struct rpb *) 338 ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys)); 339 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 340 sizeof bootinfo.booted_dev); 341 break; 342 } 343 default: 344 bootinfo_msg = "unknown bootinfo version"; 345 goto nobootinfo; 346 } 347 } else { 348 bootinfo_msg = "boot program did not pass bootinfo"; 349 nobootinfo: 350 bootinfo.ssym = (u_long)_end; 351 bootinfo.esym = (u_long)_end; 352 bootinfo.hwrpb_phys = ((struct rpb *)HWRPB_ADDR)->rpb_phys; 353 bootinfo.hwrpb_size = ((struct rpb *)HWRPB_ADDR)->rpb_size; 354 init_prom_interface((struct rpb *)HWRPB_ADDR); 355 prom_getenv(PROM_E_BOOTED_OSFLAGS, bootinfo.boot_flags, 356 sizeof bootinfo.boot_flags); 357 prom_getenv(PROM_E_BOOTED_FILE, bootinfo.booted_kernel, 358 sizeof bootinfo.booted_kernel); 359 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 360 sizeof bootinfo.booted_dev); 361 } 362 363 /* 364 * Initialize the kernel's mapping of the RPB. It's needed for 365 * lots of things. 366 */ 367 hwrpb = (struct rpb *)ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys); 368 369 #if defined(DEC_3000_300) || defined(DEC_3000_500) 370 if (hwrpb->rpb_type == ST_DEC_3000_300 || 371 hwrpb->rpb_type == ST_DEC_3000_500) { 372 prom_getenv(PROM_E_SCSIID, dec_3000_scsiid, 373 sizeof(dec_3000_scsiid)); 374 prom_getenv(PROM_E_SCSIFAST, dec_3000_scsifast, 375 sizeof(dec_3000_scsifast)); 376 } 377 #endif 378 379 /* 380 * Remember how many cycles there are per microsecond, 381 * so that we can use delay(). Round up, for safety. 382 */ 383 cycles_per_usec = (hwrpb->rpb_cc_freq + 999999) / 1000000; 384 385 /* 386 * Initalize the (temporary) bootstrap console interface, so 387 * we can use printf until the VM system starts being setup. 388 * The real console is initialized before then. 389 */ 390 init_bootstrap_console(); 391 392 /* OUTPUT NOW ALLOWED */ 393 394 /* delayed from above */ 395 if (bootinfo_msg) 396 printf("WARNING: %s (0x%lx, 0x%lx, 0x%lx)\n", 397 bootinfo_msg, bim, bip, biv); 398 399 /* Initialize the trap vectors on the primary processor. */ 400 trap_init(); 401 402 /* 403 * Find out what hardware we're on, and do basic initialization. 404 */ 405 cputype = hwrpb->rpb_type; 406 if (cputype < 0) { 407 /* 408 * At least some white-box systems have SRM which 409 * reports a systype that's the negative of their 410 * blue-box counterpart. 411 */ 412 cputype = -cputype; 413 } 414 if (cputype >= ncpuinit) { 415 platform_not_supported(); 416 /* NOTREACHED */ 417 } 418 (*cpuinit[cputype].init)(); 419 strcpy(cpu_model, platform.model); 420 421 /* 422 * Initalize the real console, so the the bootstrap console is 423 * no longer necessary. 424 */ 425 (*platform.cons_init)(); 426 427 #ifdef DIAGNOSTIC 428 /* Paranoid sanity checking */ 429 430 /* We should always be running on the the primary. */ 431 assert(hwrpb->rpb_primary_cpu_id == alpha_pal_whami()); 432 433 /* 434 * On single-CPU systypes, the primary should always be CPU 0, 435 * except on Alpha 8200 systems where the CPU id is related 436 * to the VID, which is related to the Turbo Laser node id. 437 */ 438 if (cputype != ST_DEC_21000) 439 assert(hwrpb->rpb_primary_cpu_id == 0); 440 #endif 441 442 /* NO MORE FIRMWARE ACCESS ALLOWED */ 443 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 444 /* 445 * XXX (unless _PMAP_MAY_USE_PROM_CONSOLE is defined and 446 * XXX pmap_uses_prom_console() evaluates to non-zero.) 447 */ 448 #endif 449 450 /* 451 * find out this system's page size 452 */ 453 PAGE_SIZE = hwrpb->rpb_page_size; 454 if (PAGE_SIZE != 8192) 455 panic("page size %d != 8192?!", PAGE_SIZE); 456 457 /* 458 * Initialize PAGE_SIZE-dependent variables. 459 */ 460 uvm_setpagesize(); 461 462 /* 463 * Find the beginning and end of the kernel (and leave a 464 * bit of space before the beginning for the bootstrap 465 * stack). 466 */ 467 kernstart = trunc_page(kernel_text) - 2 * PAGE_SIZE; 468 #ifdef DDB 469 ksym_start = (void *)bootinfo.ssym; 470 ksym_end = (void *)bootinfo.esym; 471 kernend = (vaddr_t)round_page(ksym_end); 472 #else 473 kernend = (vaddr_t)round_page(_end); 474 #endif 475 476 kernstartpfn = atop(ALPHA_K0SEG_TO_PHYS(kernstart)); 477 kernendpfn = atop(ALPHA_K0SEG_TO_PHYS(kernend)); 478 479 /* 480 * Find out how much memory is available, by looking at 481 * the memory cluster descriptors. This also tries to do 482 * its best to detect things things that have never been seen 483 * before... 484 */ 485 mddtp = (struct mddt *)(((caddr_t)hwrpb) + hwrpb->rpb_memdat_off); 486 487 /* MDDT SANITY CHECKING */ 488 mddtweird = 0; 489 if (mddtp->mddt_cluster_cnt < 2) { 490 mddtweird = 1; 491 printf("WARNING: weird number of mem clusters: %lu\n", 492 mddtp->mddt_cluster_cnt); 493 } 494 495 #if 0 496 printf("Memory cluster count: %d\n", mddtp->mddt_cluster_cnt); 497 #endif 498 499 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 500 memc = &mddtp->mddt_clusters[i]; 501 #if 0 502 printf("MEMC %d: pfn 0x%lx cnt 0x%lx usage 0x%lx\n", i, 503 memc->mddt_pfn, memc->mddt_pg_cnt, memc->mddt_usage); 504 #endif 505 totalphysmem += memc->mddt_pg_cnt; 506 if (mem_cluster_cnt < VM_PHYSSEG_MAX) { /* XXX */ 507 mem_clusters[mem_cluster_cnt].start = 508 ptoa(memc->mddt_pfn); 509 mem_clusters[mem_cluster_cnt].size = 510 ptoa(memc->mddt_pg_cnt); 511 if (memc->mddt_usage & MDDT_mbz || 512 memc->mddt_usage & MDDT_NONVOLATILE || /* XXX */ 513 memc->mddt_usage & MDDT_PALCODE) 514 mem_clusters[mem_cluster_cnt].size |= 515 PROT_READ; 516 else 517 mem_clusters[mem_cluster_cnt].size |= 518 PROT_READ | PROT_WRITE | PROT_EXEC; 519 mem_cluster_cnt++; 520 } 521 522 if (memc->mddt_usage & MDDT_mbz) { 523 mddtweird = 1; 524 printf("WARNING: mem cluster %d has weird " 525 "usage 0x%lx\n", i, memc->mddt_usage); 526 unknownmem += memc->mddt_pg_cnt; 527 continue; 528 } 529 if (memc->mddt_usage & MDDT_NONVOLATILE) { 530 /* XXX should handle these... */ 531 printf("WARNING: skipping non-volatile mem " 532 "cluster %d\n", i); 533 unusedmem += memc->mddt_pg_cnt; 534 continue; 535 } 536 if (memc->mddt_usage & MDDT_PALCODE) { 537 resvmem += memc->mddt_pg_cnt; 538 continue; 539 } 540 541 /* 542 * We have a memory cluster available for system 543 * software use. We must determine if this cluster 544 * holds the kernel. 545 */ 546 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 547 /* 548 * XXX If the kernel uses the PROM console, we only use the 549 * XXX memory after the kernel in the first system segment, 550 * XXX to avoid clobbering prom mapping, data, etc. 551 */ 552 if (!pmap_uses_prom_console() || physmem == 0) { 553 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 554 physmem += memc->mddt_pg_cnt; 555 pfn0 = memc->mddt_pfn; 556 pfn1 = memc->mddt_pfn + memc->mddt_pg_cnt; 557 if (pfn0 <= kernstartpfn && kernendpfn <= pfn1) { 558 /* 559 * Must compute the location of the kernel 560 * within the segment. 561 */ 562 #if 0 563 printf("Cluster %d contains kernel\n", i); 564 #endif 565 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 566 if (!pmap_uses_prom_console()) { 567 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 568 if (pfn0 < kernstartpfn) { 569 /* 570 * There is a chunk before the kernel. 571 */ 572 #if 0 573 printf("Loading chunk before kernel: " 574 "0x%lx / 0x%lx\n", pfn0, kernstartpfn); 575 #endif 576 uvm_page_physload(pfn0, kernstartpfn, 577 pfn0, kernstartpfn, VM_FREELIST_DEFAULT); 578 } 579 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 580 } 581 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 582 if (kernendpfn < pfn1) { 583 /* 584 * There is a chunk after the kernel. 585 */ 586 #if 0 587 printf("Loading chunk after kernel: " 588 "0x%lx / 0x%lx\n", kernendpfn, pfn1); 589 #endif 590 uvm_page_physload(kernendpfn, pfn1, 591 kernendpfn, pfn1, VM_FREELIST_DEFAULT); 592 } 593 } else { 594 /* 595 * Just load this cluster as one chunk. 596 */ 597 #if 0 598 printf("Loading cluster %d: 0x%lx / 0x%lx\n", i, 599 pfn0, pfn1); 600 #endif 601 uvm_page_physload(pfn0, pfn1, pfn0, pfn1, 602 VM_FREELIST_DEFAULT); 603 } 604 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 605 } 606 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 607 } 608 609 /* 610 * Dump out the MDDT if it looks odd... 611 */ 612 if (mddtweird) { 613 printf("\n"); 614 printf("complete memory cluster information:\n"); 615 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 616 printf("mddt %d:\n", i); 617 printf("\tpfn %lx\n", 618 mddtp->mddt_clusters[i].mddt_pfn); 619 printf("\tcnt %lx\n", 620 mddtp->mddt_clusters[i].mddt_pg_cnt); 621 printf("\ttest %lx\n", 622 mddtp->mddt_clusters[i].mddt_pg_test); 623 printf("\tbva %lx\n", 624 mddtp->mddt_clusters[i].mddt_v_bitaddr); 625 printf("\tbpa %lx\n", 626 mddtp->mddt_clusters[i].mddt_p_bitaddr); 627 printf("\tbcksum %lx\n", 628 mddtp->mddt_clusters[i].mddt_bit_cksum); 629 printf("\tusage %lx\n", 630 mddtp->mddt_clusters[i].mddt_usage); 631 } 632 printf("\n"); 633 } 634 635 if (totalphysmem == 0) 636 panic("can't happen: system seems to have no memory!"); 637 maxmem = physmem; 638 #if 0 639 printf("totalphysmem = %d\n", totalphysmem); 640 printf("physmem = %d\n", physmem); 641 printf("resvmem = %d\n", resvmem); 642 printf("unusedmem = %d\n", unusedmem); 643 printf("unknownmem = %d\n", unknownmem); 644 #endif 645 646 /* 647 * Adjust some parameters if the amount of physmem 648 * available would cause us to croak. This is completely 649 * eyeballed and isn't meant to be the final answer. 650 * vm_phys_size is probably the only one to really worry 651 * about. 652 * 653 * It's for booting a GENERIC kernel on a large memory platform. 654 */ 655 if (physmem >= atop(128 * 1024 * 1024)) { 656 vm_kmem_size <<= 3; 657 vm_phys_size <<= 2; 658 } 659 660 /* 661 * Initialize error message buffer (at end of core). 662 */ 663 { 664 size_t sz = round_page(MSGBUFSIZE); 665 666 vps = &vm_physmem[vm_nphysseg - 1]; 667 668 /* shrink so that it'll fit in the last segment */ 669 if ((vps->avail_end - vps->avail_start) < atop(sz)) 670 sz = ptoa(vps->avail_end - vps->avail_start); 671 672 vps->end -= atop(sz); 673 vps->avail_end -= atop(sz); 674 msgbufaddr = (caddr_t) ALPHA_PHYS_TO_K0SEG(ptoa(vps->end)); 675 initmsgbuf(msgbufaddr, sz); 676 677 /* Remove the last segment if it now has no pages. */ 678 if (vps->start == vps->end) 679 vm_nphysseg--; 680 681 /* warn if the message buffer had to be shrunk */ 682 if (sz != round_page(MSGBUFSIZE)) 683 printf("WARNING: %ld bytes not available for msgbuf in last cluster (%ld used)\n", 684 round_page(MSGBUFSIZE), sz); 685 686 } 687 688 /* 689 * Init mapping for u page(s) for proc 0 690 */ 691 proc0.p_addr = proc0paddr = 692 (struct user *)pmap_steal_memory(UPAGES * PAGE_SIZE, NULL, NULL); 693 694 /* 695 * Allocate space for system data structures. These data structures 696 * are allocated here instead of cpu_startup() because physical 697 * memory is directly addressable. We don't have to map these into 698 * virtual address space. 699 */ 700 size = (vsize_t)allocsys(NULL, mdallocsys); 701 v = (caddr_t)pmap_steal_memory(size, NULL, NULL); 702 if ((allocsys(v, mdallocsys) - v) != size) 703 panic("alpha_init: table size inconsistency"); 704 705 /* 706 * Initialize the virtual memory system, and set the 707 * page table base register in proc 0's PCB. 708 */ 709 pmap_bootstrap(ALPHA_PHYS_TO_K0SEG(ptb << PGSHIFT), 710 hwrpb->rpb_max_asn, hwrpb->rpb_pcs_cnt); 711 712 /* 713 * Initialize the rest of proc 0's PCB, and cache its physical 714 * address. 715 */ 716 proc0.p_md.md_pcbpaddr = 717 (struct pcb *)ALPHA_K0SEG_TO_PHYS((vaddr_t)&proc0paddr->u_pcb); 718 719 /* 720 * Set the kernel sp, reserving space for an (empty) trapframe, 721 * and make proc0's trapframe pointer point to it for sanity. 722 */ 723 proc0paddr->u_pcb.pcb_hw.apcb_ksp = 724 (u_int64_t)proc0paddr + USPACE - sizeof(struct trapframe); 725 proc0.p_md.md_tf = 726 (struct trapframe *)proc0paddr->u_pcb.pcb_hw.apcb_ksp; 727 728 #if defined(MULTIPROCESSOR) 729 /* 730 * Initialize the primary CPU's idle PCB to proc0's, until 731 * autoconfiguration runs (it will get its own idle PCB there). 732 */ 733 curcpu()->ci_idle_pcb = &proc0paddr->u_pcb; 734 curcpu()->ci_idle_pcb_paddr = (u_long)proc0.p_md.md_pcbpaddr; 735 #endif 736 737 /* 738 * Look at arguments passed to us and compute boothowto. 739 */ 740 741 boothowto = RB_SINGLE; 742 #ifdef KADB 743 boothowto |= RB_KDB; 744 #endif 745 for (p = bootinfo.boot_flags; p && *p != '\0'; p++) { 746 /* 747 * Note that we'd really like to differentiate case here, 748 * but the Alpha AXP Architecture Reference Manual 749 * says that we shouldn't. 750 */ 751 switch (*p) { 752 case 'a': /* autoboot */ 753 case 'A': 754 boothowto &= ~RB_SINGLE; 755 break; 756 757 #ifdef DEBUG 758 case 'c': /* crash dump immediately after autoconfig */ 759 case 'C': 760 boothowto |= RB_DUMP; 761 break; 762 #endif 763 764 #if defined(KGDB) || defined(DDB) 765 case 'd': /* break into the kernel debugger ASAP */ 766 case 'D': 767 boothowto |= RB_KDB; 768 break; 769 #endif 770 771 case 'h': /* always halt, never reboot */ 772 case 'H': 773 boothowto |= RB_HALT; 774 break; 775 776 #if 0 777 case 'm': /* mini root present in memory */ 778 case 'M': 779 boothowto |= RB_MINIROOT; 780 break; 781 #endif 782 783 case 'n': /* askname */ 784 case 'N': 785 boothowto |= RB_ASKNAME; 786 break; 787 788 case 's': /* single-user (default, supported for sanity) */ 789 case 'S': 790 boothowto |= RB_SINGLE; 791 break; 792 793 case '-': 794 /* 795 * Just ignore this. It's not required, but it's 796 * common for it to be passed regardless. 797 */ 798 break; 799 800 default: 801 printf("Unrecognized boot flag '%c'.\n", *p); 802 break; 803 } 804 } 805 806 807 /* 808 * Figure out the number of cpus in the box, from RPB fields. 809 * Really. We mean it. 810 */ 811 for (i = 0; i < hwrpb->rpb_pcs_cnt; i++) { 812 struct pcs *pcsp; 813 814 pcsp = LOCATE_PCS(hwrpb, i); 815 if ((pcsp->pcs_flags & PCS_PP) != 0) 816 ncpus++; 817 } 818 819 /* 820 * Initialize debuggers, and break into them if appropriate. 821 */ 822 #ifdef DDB 823 db_machine_init(); 824 ddb_init((int)((u_int64_t)ksym_end - (u_int64_t)ksym_start), 825 ksym_start, ksym_end); 826 if (boothowto & RB_KDB) 827 Debugger(); 828 #endif 829 #ifdef KGDB 830 if (boothowto & RB_KDB) 831 kgdb_connect(0); 832 #endif 833 /* 834 * Figure out our clock frequency, from RPB fields. 835 */ 836 hz = hwrpb->rpb_intr_freq >> 12; 837 if (!(60 <= hz && hz <= 10240)) { 838 hz = 1024; 839 #ifdef DIAGNOSTIC 840 printf("WARNING: unbelievable rpb_intr_freq: %ld (%d hz)\n", 841 hwrpb->rpb_intr_freq, hz); 842 #endif 843 } 844 } 845 846 caddr_t 847 mdallocsys(v) 848 caddr_t v; 849 { 850 /* 851 * There appears to be a correlation between the number 852 * of processor slots defined in the HWRPB and the whami 853 * value that can be returned. 854 */ 855 ALLOCSYS(v, mchkinfo_all_cpus, struct mchkinfo, hwrpb->rpb_pcs_cnt); 856 return (v); 857 } 858 859 void 860 consinit() 861 { 862 863 /* 864 * Everything related to console initialization is done 865 * in alpha_init(). 866 */ 867 #if defined(DIAGNOSTIC) && defined(_PMAP_MAY_USE_PROM_CONSOLE) 868 printf("consinit: %susing prom console\n", 869 pmap_uses_prom_console() ? "" : "not "); 870 #endif 871 } 872 873 #include "pckbc.h" 874 #include "pckbd.h" 875 #if (NPCKBC > 0) && (NPCKBD == 0) 876 877 #include <dev/ic/pckbcvar.h> 878 879 /* 880 * This is called by the pbkbc driver if no pckbd is configured. 881 * On the i386, it is used to glue in the old, deprecated console 882 * code. On the Alpha, it does nothing. 883 */ 884 int 885 pckbc_machdep_cnattach(kbctag, kbcslot) 886 pckbc_tag_t kbctag; 887 pckbc_slot_t kbcslot; 888 { 889 890 return (ENXIO); 891 } 892 #endif /* NPCKBC > 0 && NPCKBD == 0 */ 893 894 void 895 cpu_startup() 896 { 897 register unsigned i; 898 int base, residual; 899 vaddr_t minaddr, maxaddr; 900 vsize_t size; 901 char pbuf[9]; 902 #if defined(DEBUG) 903 extern int pmapdebug; 904 int opmapdebug = pmapdebug; 905 906 pmapdebug = 0; 907 #endif 908 909 /* 910 * Good {morning,afternoon,evening,night}. 911 */ 912 printf(version); 913 identifycpu(); 914 format_bytes(pbuf, sizeof(pbuf), ptoa(totalphysmem)); 915 printf("total memory = %s\n", pbuf); 916 format_bytes(pbuf, sizeof(pbuf), ptoa(resvmem)); 917 printf("(%s reserved for PROM, ", pbuf); 918 format_bytes(pbuf, sizeof(pbuf), ptoa(physmem)); 919 printf("%s used by NetBSD)\n", pbuf); 920 if (unusedmem) { 921 format_bytes(pbuf, sizeof(pbuf), ptoa(unusedmem)); 922 printf("WARNING: unused memory = %s\n", pbuf); 923 } 924 if (unknownmem) { 925 format_bytes(pbuf, sizeof(pbuf), ptoa(unknownmem)); 926 printf("WARNING: %s of memory with unknown purpose\n", pbuf); 927 } 928 929 /* 930 * Allocate virtual address space for file I/O buffers. 931 * Note they are different than the array of headers, 'buf', 932 * and usually occupy more virtual memory than physical. 933 */ 934 size = MAXBSIZE * nbuf; 935 if (uvm_map(kernel_map, (vaddr_t *) &buffers, round_page(size), 936 NULL, UVM_UNKNOWN_OFFSET, 937 UVM_MAPFLAG(UVM_PROT_NONE, UVM_PROT_NONE, UVM_INH_NONE, 938 UVM_ADV_NORMAL, 0)) != KERN_SUCCESS) 939 panic("startup: cannot allocate VM for buffers"); 940 base = bufpages / nbuf; 941 residual = bufpages % nbuf; 942 for (i = 0; i < nbuf; i++) { 943 vsize_t curbufsize; 944 vaddr_t curbuf; 945 struct vm_page *pg; 946 947 /* 948 * Each buffer has MAXBSIZE bytes of VM space allocated. Of 949 * that MAXBSIZE space, we allocate and map (base+1) pages 950 * for the first "residual" buffers, and then we allocate 951 * "base" pages for the rest. 952 */ 953 curbuf = (vaddr_t) buffers + (i * MAXBSIZE); 954 curbufsize = NBPG * ((i < residual) ? (base+1) : base); 955 956 while (curbufsize) { 957 pg = uvm_pagealloc(NULL, 0, NULL, 0); 958 if (pg == NULL) 959 panic("cpu_startup: not enough memory for " 960 "buffer cache"); 961 pmap_kenter_pa(curbuf, VM_PAGE_TO_PHYS(pg), 962 VM_PROT_READ|VM_PROT_WRITE); 963 curbuf += PAGE_SIZE; 964 curbufsize -= PAGE_SIZE; 965 } 966 } 967 /* 968 * Allocate a submap for exec arguments. This map effectively 969 * limits the number of processes exec'ing at any time. 970 */ 971 exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 972 16 * NCARGS, VM_MAP_PAGEABLE, FALSE, NULL); 973 974 /* 975 * Allocate a submap for physio 976 */ 977 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 978 VM_PHYS_SIZE, 0, FALSE, NULL); 979 980 /* 981 * No need to allocate an mbuf cluster submap. Mbuf clusters 982 * are allocated via the pool allocator, and we use K0SEG to 983 * map those pages. 984 */ 985 986 #if defined(DEBUG) 987 pmapdebug = opmapdebug; 988 #endif 989 format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 990 printf("avail memory = %s\n", pbuf); 991 #if 0 992 { 993 extern u_long pmap_pages_stolen; 994 995 format_bytes(pbuf, sizeof(pbuf), pmap_pages_stolen * PAGE_SIZE); 996 printf("stolen memory for VM structures = %s\n", pbuf); 997 } 998 #endif 999 format_bytes(pbuf, sizeof(pbuf), bufpages * NBPG); 1000 printf("using %ld buffers containing %s of memory\n", (long)nbuf, pbuf); 1001 1002 /* 1003 * Set up buffers, so they can be used to read disk labels. 1004 */ 1005 bufinit(); 1006 1007 /* 1008 * Set up the HWPCB so that it's safe to configure secondary 1009 * CPUs. 1010 */ 1011 hwrpb_primary_init(); 1012 } 1013 1014 /* 1015 * Retrieve the platform name from the DSR. 1016 */ 1017 const char * 1018 alpha_dsr_sysname() 1019 { 1020 struct dsrdb *dsr; 1021 const char *sysname; 1022 1023 /* 1024 * DSR does not exist on early HWRPB versions. 1025 */ 1026 if (hwrpb->rpb_version < HWRPB_DSRDB_MINVERS) 1027 return (NULL); 1028 1029 dsr = (struct dsrdb *)(((caddr_t)hwrpb) + hwrpb->rpb_dsrdb_off); 1030 sysname = (const char *)((caddr_t)dsr + (dsr->dsr_sysname_off + 1031 sizeof(u_int64_t))); 1032 return (sysname); 1033 } 1034 1035 /* 1036 * Lookup the system specified system variation in the provided table, 1037 * returning the model string on match. 1038 */ 1039 const char * 1040 alpha_variation_name(variation, avtp) 1041 u_int64_t variation; 1042 const struct alpha_variation_table *avtp; 1043 { 1044 int i; 1045 1046 for (i = 0; avtp[i].avt_model != NULL; i++) 1047 if (avtp[i].avt_variation == variation) 1048 return (avtp[i].avt_model); 1049 return (NULL); 1050 } 1051 1052 /* 1053 * Generate a default platform name based for unknown system variations. 1054 */ 1055 const char * 1056 alpha_unknown_sysname() 1057 { 1058 static char s[128]; /* safe size */ 1059 1060 sprintf(s, "%s family, unknown model variation 0x%lx", 1061 platform.family, hwrpb->rpb_variation & SV_ST_MASK); 1062 return ((const char *)s); 1063 } 1064 1065 void 1066 identifycpu() 1067 { 1068 char *s; 1069 1070 /* 1071 * print out CPU identification information. 1072 */ 1073 printf("%s", cpu_model); 1074 for(s = cpu_model; *s; ++s) 1075 if(strncasecmp(s, "MHz", 3) == 0) 1076 goto skipMHz; 1077 printf(", %ldMHz", hwrpb->rpb_cc_freq / 1000000); 1078 skipMHz: 1079 printf("\n"); 1080 printf("%ld byte page size, %d processor%s.\n", 1081 hwrpb->rpb_page_size, ncpus, ncpus == 1 ? "" : "s"); 1082 #if 0 1083 /* this isn't defined for any systems that we run on? */ 1084 printf("serial number 0x%lx 0x%lx\n", 1085 ((long *)hwrpb->rpb_ssn)[0], ((long *)hwrpb->rpb_ssn)[1]); 1086 1087 /* and these aren't particularly useful! */ 1088 printf("variation: 0x%lx, revision 0x%lx\n", 1089 hwrpb->rpb_variation, *(long *)hwrpb->rpb_revision); 1090 #endif 1091 } 1092 1093 int waittime = -1; 1094 struct pcb dumppcb; 1095 1096 void 1097 cpu_reboot(howto, bootstr) 1098 int howto; 1099 char *bootstr; 1100 { 1101 #if defined(MULTIPROCESSOR) 1102 #if 0 /* XXX See below. */ 1103 u_long cpu_id; 1104 #endif 1105 #endif 1106 1107 #if defined(MULTIPROCESSOR) 1108 /* We must be running on the primary CPU. */ 1109 if (alpha_pal_whami() != hwrpb->rpb_primary_cpu_id) 1110 panic("cpu_reboot: not on primary CPU!"); 1111 #endif 1112 1113 /* If system is cold, just halt. */ 1114 if (cold) { 1115 howto |= RB_HALT; 1116 goto haltsys; 1117 } 1118 1119 /* If "always halt" was specified as a boot flag, obey. */ 1120 if ((boothowto & RB_HALT) != 0) 1121 howto |= RB_HALT; 1122 1123 boothowto = howto; 1124 if ((howto & RB_NOSYNC) == 0 && waittime < 0) { 1125 waittime = 0; 1126 vfs_shutdown(); 1127 /* 1128 * If we've been adjusting the clock, the todr 1129 * will be out of synch; adjust it now. 1130 */ 1131 resettodr(); 1132 } 1133 1134 /* Disable interrupts. */ 1135 splhigh(); 1136 1137 /* If rebooting and a dump is requested do it. */ 1138 #if 0 1139 if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP) 1140 #else 1141 if (howto & RB_DUMP) 1142 #endif 1143 dumpsys(); 1144 1145 haltsys: 1146 1147 /* run any shutdown hooks */ 1148 doshutdownhooks(); 1149 1150 #if defined(MULTIPROCESSOR) 1151 #if 0 /* XXX doesn't work when called from here?! */ 1152 /* Kill off any secondary CPUs. */ 1153 for (cpu_id = 0; cpu_id < hwrpb->rpb_pcs_cnt; cpu_id++) { 1154 if (cpu_id == hwrpb->rpb_primary_cpu_id || 1155 cpu_info[cpu_id].ci_softc == NULL) 1156 continue; 1157 cpu_halt_secondary(cpu_id); 1158 } 1159 #endif 1160 #endif 1161 1162 #ifdef BOOTKEY 1163 printf("hit any key to %s...\n", howto & RB_HALT ? "halt" : "reboot"); 1164 cnpollc(1); /* for proper keyboard command handling */ 1165 cngetc(); 1166 cnpollc(0); 1167 printf("\n"); 1168 #endif 1169 1170 /* Finally, powerdown/halt/reboot the system. */ 1171 if ((howto & RB_POWERDOWN) == RB_POWERDOWN && 1172 platform.powerdown != NULL) { 1173 (*platform.powerdown)(); 1174 printf("WARNING: powerdown failed!\n"); 1175 } 1176 printf("%s\n\n", howto & RB_HALT ? "halted." : "rebooting..."); 1177 prom_halt(howto & RB_HALT); 1178 /*NOTREACHED*/ 1179 } 1180 1181 /* 1182 * These variables are needed by /sbin/savecore 1183 */ 1184 u_long dumpmag = 0x8fca0101; /* magic number */ 1185 int dumpsize = 0; /* pages */ 1186 long dumplo = 0; /* blocks */ 1187 1188 /* 1189 * cpu_dumpsize: calculate size of machine-dependent kernel core dump headers. 1190 */ 1191 int 1192 cpu_dumpsize() 1193 { 1194 int size; 1195 1196 size = ALIGN(sizeof(kcore_seg_t)) + ALIGN(sizeof(cpu_kcore_hdr_t)) + 1197 ALIGN(mem_cluster_cnt * sizeof(phys_ram_seg_t)); 1198 if (roundup(size, dbtob(1)) != dbtob(1)) 1199 return -1; 1200 1201 return (1); 1202 } 1203 1204 /* 1205 * cpu_dump_mempagecnt: calculate size of RAM (in pages) to be dumped. 1206 */ 1207 u_long 1208 cpu_dump_mempagecnt() 1209 { 1210 u_long i, n; 1211 1212 n = 0; 1213 for (i = 0; i < mem_cluster_cnt; i++) 1214 n += atop(mem_clusters[i].size); 1215 return (n); 1216 } 1217 1218 /* 1219 * cpu_dump: dump machine-dependent kernel core dump headers. 1220 */ 1221 int 1222 cpu_dump() 1223 { 1224 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1225 char buf[dbtob(1)]; 1226 kcore_seg_t *segp; 1227 cpu_kcore_hdr_t *cpuhdrp; 1228 phys_ram_seg_t *memsegp; 1229 int i; 1230 1231 dump = bdevsw[major(dumpdev)].d_dump; 1232 1233 bzero(buf, sizeof buf); 1234 segp = (kcore_seg_t *)buf; 1235 cpuhdrp = (cpu_kcore_hdr_t *)&buf[ALIGN(sizeof(*segp))]; 1236 memsegp = (phys_ram_seg_t *)&buf[ ALIGN(sizeof(*segp)) + 1237 ALIGN(sizeof(*cpuhdrp))]; 1238 1239 /* 1240 * Generate a segment header. 1241 */ 1242 CORE_SETMAGIC(*segp, KCORE_MAGIC, MID_MACHINE, CORE_CPU); 1243 segp->c_size = dbtob(1) - ALIGN(sizeof(*segp)); 1244 1245 /* 1246 * Add the machine-dependent header info. 1247 */ 1248 cpuhdrp->lev1map_pa = ALPHA_K0SEG_TO_PHYS((vaddr_t)kernel_lev1map); 1249 cpuhdrp->page_size = PAGE_SIZE; 1250 cpuhdrp->nmemsegs = mem_cluster_cnt; 1251 1252 /* 1253 * Fill in the memory segment descriptors. 1254 */ 1255 for (i = 0; i < mem_cluster_cnt; i++) { 1256 memsegp[i].start = mem_clusters[i].start; 1257 memsegp[i].size = mem_clusters[i].size & ~PAGE_MASK; 1258 } 1259 1260 return (dump(dumpdev, dumplo, (caddr_t)buf, dbtob(1))); 1261 } 1262 1263 /* 1264 * This is called by main to set dumplo and dumpsize. 1265 * Dumps always skip the first NBPG of disk space 1266 * in case there might be a disk label stored there. 1267 * If there is extra space, put dump at the end to 1268 * reduce the chance that swapping trashes it. 1269 */ 1270 void 1271 cpu_dumpconf() 1272 { 1273 int nblks, dumpblks; /* size of dump area */ 1274 int maj; 1275 1276 if (dumpdev == NODEV) 1277 goto bad; 1278 maj = major(dumpdev); 1279 if (maj < 0 || maj >= nblkdev) 1280 panic("dumpconf: bad dumpdev=0x%x", dumpdev); 1281 if (bdevsw[maj].d_psize == NULL) 1282 goto bad; 1283 nblks = (*bdevsw[maj].d_psize)(dumpdev); 1284 if (nblks <= ctod(1)) 1285 goto bad; 1286 1287 dumpblks = cpu_dumpsize(); 1288 if (dumpblks < 0) 1289 goto bad; 1290 dumpblks += ctod(cpu_dump_mempagecnt()); 1291 1292 /* If dump won't fit (incl. room for possible label), punt. */ 1293 if (dumpblks > (nblks - ctod(1))) 1294 goto bad; 1295 1296 /* Put dump at end of partition */ 1297 dumplo = nblks - dumpblks; 1298 1299 /* dumpsize is in page units, and doesn't include headers. */ 1300 dumpsize = cpu_dump_mempagecnt(); 1301 return; 1302 1303 bad: 1304 dumpsize = 0; 1305 return; 1306 } 1307 1308 /* 1309 * Dump the kernel's image to the swap partition. 1310 */ 1311 #define BYTES_PER_DUMP NBPG 1312 1313 void 1314 dumpsys() 1315 { 1316 u_long totalbytesleft, bytes, i, n, memcl; 1317 u_long maddr; 1318 int psize; 1319 daddr_t blkno; 1320 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1321 int error; 1322 1323 /* Save registers. */ 1324 savectx(&dumppcb); 1325 1326 msgbufenabled = 0; /* don't record dump msgs in msgbuf */ 1327 if (dumpdev == NODEV) 1328 return; 1329 1330 /* 1331 * For dumps during autoconfiguration, 1332 * if dump device has already configured... 1333 */ 1334 if (dumpsize == 0) 1335 cpu_dumpconf(); 1336 if (dumplo <= 0) { 1337 printf("\ndump to dev %u,%u not possible\n", major(dumpdev), 1338 minor(dumpdev)); 1339 return; 1340 } 1341 printf("\ndumping to dev %u,%u offset %ld\n", major(dumpdev), 1342 minor(dumpdev), dumplo); 1343 1344 psize = (*bdevsw[major(dumpdev)].d_psize)(dumpdev); 1345 printf("dump "); 1346 if (psize == -1) { 1347 printf("area unavailable\n"); 1348 return; 1349 } 1350 1351 /* XXX should purge all outstanding keystrokes. */ 1352 1353 if ((error = cpu_dump()) != 0) 1354 goto err; 1355 1356 totalbytesleft = ptoa(cpu_dump_mempagecnt()); 1357 blkno = dumplo + cpu_dumpsize(); 1358 dump = bdevsw[major(dumpdev)].d_dump; 1359 error = 0; 1360 1361 for (memcl = 0; memcl < mem_cluster_cnt; memcl++) { 1362 maddr = mem_clusters[memcl].start; 1363 bytes = mem_clusters[memcl].size & ~PAGE_MASK; 1364 1365 for (i = 0; i < bytes; i += n, totalbytesleft -= n) { 1366 1367 /* Print out how many MBs we to go. */ 1368 if ((totalbytesleft % (1024*1024)) == 0) 1369 printf("%ld ", totalbytesleft / (1024 * 1024)); 1370 1371 /* Limit size for next transfer. */ 1372 n = bytes - i; 1373 if (n > BYTES_PER_DUMP) 1374 n = BYTES_PER_DUMP; 1375 1376 error = (*dump)(dumpdev, blkno, 1377 (caddr_t)ALPHA_PHYS_TO_K0SEG(maddr), n); 1378 if (error) 1379 goto err; 1380 maddr += n; 1381 blkno += btodb(n); /* XXX? */ 1382 1383 /* XXX should look for keystrokes, to cancel. */ 1384 } 1385 } 1386 1387 err: 1388 switch (error) { 1389 1390 case ENXIO: 1391 printf("device bad\n"); 1392 break; 1393 1394 case EFAULT: 1395 printf("device not ready\n"); 1396 break; 1397 1398 case EINVAL: 1399 printf("area improper\n"); 1400 break; 1401 1402 case EIO: 1403 printf("i/o error\n"); 1404 break; 1405 1406 case EINTR: 1407 printf("aborted from console\n"); 1408 break; 1409 1410 case 0: 1411 printf("succeeded\n"); 1412 break; 1413 1414 default: 1415 printf("error %d\n", error); 1416 break; 1417 } 1418 printf("\n\n"); 1419 delay(1000); 1420 } 1421 1422 void 1423 frametoreg(framep, regp) 1424 struct trapframe *framep; 1425 struct reg *regp; 1426 { 1427 1428 regp->r_regs[R_V0] = framep->tf_regs[FRAME_V0]; 1429 regp->r_regs[R_T0] = framep->tf_regs[FRAME_T0]; 1430 regp->r_regs[R_T1] = framep->tf_regs[FRAME_T1]; 1431 regp->r_regs[R_T2] = framep->tf_regs[FRAME_T2]; 1432 regp->r_regs[R_T3] = framep->tf_regs[FRAME_T3]; 1433 regp->r_regs[R_T4] = framep->tf_regs[FRAME_T4]; 1434 regp->r_regs[R_T5] = framep->tf_regs[FRAME_T5]; 1435 regp->r_regs[R_T6] = framep->tf_regs[FRAME_T6]; 1436 regp->r_regs[R_T7] = framep->tf_regs[FRAME_T7]; 1437 regp->r_regs[R_S0] = framep->tf_regs[FRAME_S0]; 1438 regp->r_regs[R_S1] = framep->tf_regs[FRAME_S1]; 1439 regp->r_regs[R_S2] = framep->tf_regs[FRAME_S2]; 1440 regp->r_regs[R_S3] = framep->tf_regs[FRAME_S3]; 1441 regp->r_regs[R_S4] = framep->tf_regs[FRAME_S4]; 1442 regp->r_regs[R_S5] = framep->tf_regs[FRAME_S5]; 1443 regp->r_regs[R_S6] = framep->tf_regs[FRAME_S6]; 1444 regp->r_regs[R_A0] = framep->tf_regs[FRAME_A0]; 1445 regp->r_regs[R_A1] = framep->tf_regs[FRAME_A1]; 1446 regp->r_regs[R_A2] = framep->tf_regs[FRAME_A2]; 1447 regp->r_regs[R_A3] = framep->tf_regs[FRAME_A3]; 1448 regp->r_regs[R_A4] = framep->tf_regs[FRAME_A4]; 1449 regp->r_regs[R_A5] = framep->tf_regs[FRAME_A5]; 1450 regp->r_regs[R_T8] = framep->tf_regs[FRAME_T8]; 1451 regp->r_regs[R_T9] = framep->tf_regs[FRAME_T9]; 1452 regp->r_regs[R_T10] = framep->tf_regs[FRAME_T10]; 1453 regp->r_regs[R_T11] = framep->tf_regs[FRAME_T11]; 1454 regp->r_regs[R_RA] = framep->tf_regs[FRAME_RA]; 1455 regp->r_regs[R_T12] = framep->tf_regs[FRAME_T12]; 1456 regp->r_regs[R_AT] = framep->tf_regs[FRAME_AT]; 1457 regp->r_regs[R_GP] = framep->tf_regs[FRAME_GP]; 1458 /* regp->r_regs[R_SP] = framep->tf_regs[FRAME_SP]; XXX */ 1459 regp->r_regs[R_ZERO] = 0; 1460 } 1461 1462 void 1463 regtoframe(regp, framep) 1464 struct reg *regp; 1465 struct trapframe *framep; 1466 { 1467 1468 framep->tf_regs[FRAME_V0] = regp->r_regs[R_V0]; 1469 framep->tf_regs[FRAME_T0] = regp->r_regs[R_T0]; 1470 framep->tf_regs[FRAME_T1] = regp->r_regs[R_T1]; 1471 framep->tf_regs[FRAME_T2] = regp->r_regs[R_T2]; 1472 framep->tf_regs[FRAME_T3] = regp->r_regs[R_T3]; 1473 framep->tf_regs[FRAME_T4] = regp->r_regs[R_T4]; 1474 framep->tf_regs[FRAME_T5] = regp->r_regs[R_T5]; 1475 framep->tf_regs[FRAME_T6] = regp->r_regs[R_T6]; 1476 framep->tf_regs[FRAME_T7] = regp->r_regs[R_T7]; 1477 framep->tf_regs[FRAME_S0] = regp->r_regs[R_S0]; 1478 framep->tf_regs[FRAME_S1] = regp->r_regs[R_S1]; 1479 framep->tf_regs[FRAME_S2] = regp->r_regs[R_S2]; 1480 framep->tf_regs[FRAME_S3] = regp->r_regs[R_S3]; 1481 framep->tf_regs[FRAME_S4] = regp->r_regs[R_S4]; 1482 framep->tf_regs[FRAME_S5] = regp->r_regs[R_S5]; 1483 framep->tf_regs[FRAME_S6] = regp->r_regs[R_S6]; 1484 framep->tf_regs[FRAME_A0] = regp->r_regs[R_A0]; 1485 framep->tf_regs[FRAME_A1] = regp->r_regs[R_A1]; 1486 framep->tf_regs[FRAME_A2] = regp->r_regs[R_A2]; 1487 framep->tf_regs[FRAME_A3] = regp->r_regs[R_A3]; 1488 framep->tf_regs[FRAME_A4] = regp->r_regs[R_A4]; 1489 framep->tf_regs[FRAME_A5] = regp->r_regs[R_A5]; 1490 framep->tf_regs[FRAME_T8] = regp->r_regs[R_T8]; 1491 framep->tf_regs[FRAME_T9] = regp->r_regs[R_T9]; 1492 framep->tf_regs[FRAME_T10] = regp->r_regs[R_T10]; 1493 framep->tf_regs[FRAME_T11] = regp->r_regs[R_T11]; 1494 framep->tf_regs[FRAME_RA] = regp->r_regs[R_RA]; 1495 framep->tf_regs[FRAME_T12] = regp->r_regs[R_T12]; 1496 framep->tf_regs[FRAME_AT] = regp->r_regs[R_AT]; 1497 framep->tf_regs[FRAME_GP] = regp->r_regs[R_GP]; 1498 /* framep->tf_regs[FRAME_SP] = regp->r_regs[R_SP]; XXX */ 1499 /* ??? = regp->r_regs[R_ZERO]; */ 1500 } 1501 1502 void 1503 printregs(regp) 1504 struct reg *regp; 1505 { 1506 int i; 1507 1508 for (i = 0; i < 32; i++) 1509 printf("R%d:\t0x%016lx%s", i, regp->r_regs[i], 1510 i & 1 ? "\n" : "\t"); 1511 } 1512 1513 void 1514 regdump(framep) 1515 struct trapframe *framep; 1516 { 1517 struct reg reg; 1518 1519 frametoreg(framep, ®); 1520 reg.r_regs[R_SP] = alpha_pal_rdusp(); 1521 1522 printf("REGISTERS:\n"); 1523 printregs(®); 1524 } 1525 1526 #ifdef DEBUG 1527 int sigdebug = 0; 1528 int sigpid = 0; 1529 #define SDB_FOLLOW 0x01 1530 #define SDB_KSTACK 0x02 1531 #endif 1532 1533 /* 1534 * Send an interrupt to process. 1535 */ 1536 void 1537 sendsig(catcher, sig, mask, code) 1538 sig_t catcher; 1539 int sig; 1540 sigset_t *mask; 1541 u_long code; 1542 { 1543 struct proc *p = curproc; 1544 struct sigcontext *scp, ksc; 1545 struct trapframe *frame; 1546 struct sigacts *psp = p->p_sigacts; 1547 int onstack, fsize, rndfsize; 1548 1549 frame = p->p_md.md_tf; 1550 1551 /* Do we need to jump onto the signal stack? */ 1552 onstack = 1553 (psp->ps_sigstk.ss_flags & (SS_DISABLE | SS_ONSTACK)) == 0 && 1554 (psp->ps_sigact[sig].sa_flags & SA_ONSTACK) != 0; 1555 1556 /* Allocate space for the signal handler context. */ 1557 fsize = sizeof(ksc); 1558 rndfsize = ((fsize + 15) / 16) * 16; 1559 1560 if (onstack) 1561 scp = (struct sigcontext *)((caddr_t)psp->ps_sigstk.ss_sp + 1562 psp->ps_sigstk.ss_size); 1563 else 1564 scp = (struct sigcontext *)(alpha_pal_rdusp()); 1565 scp = (struct sigcontext *)((caddr_t)scp - rndfsize); 1566 1567 #ifdef DEBUG 1568 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1569 printf("sendsig(%d): sig %d ssp %p usp %p\n", p->p_pid, 1570 sig, &onstack, scp); 1571 #endif 1572 1573 /* Build stack frame for signal trampoline. */ 1574 ksc.sc_pc = frame->tf_regs[FRAME_PC]; 1575 ksc.sc_ps = frame->tf_regs[FRAME_PS]; 1576 1577 /* Save register context. */ 1578 frametoreg(frame, (struct reg *)ksc.sc_regs); 1579 ksc.sc_regs[R_ZERO] = 0xACEDBADE; /* magic number */ 1580 ksc.sc_regs[R_SP] = alpha_pal_rdusp(); 1581 1582 /* save the floating-point state, if necessary, then copy it. */ 1583 if (p == fpcurproc) { 1584 alpha_pal_wrfen(1); 1585 savefpstate(&p->p_addr->u_pcb.pcb_fp); 1586 alpha_pal_wrfen(0); 1587 fpcurproc = NULL; 1588 } 1589 ksc.sc_ownedfp = p->p_md.md_flags & MDP_FPUSED; 1590 bcopy(&p->p_addr->u_pcb.pcb_fp, (struct fpreg *)ksc.sc_fpregs, 1591 sizeof(struct fpreg)); 1592 ksc.sc_fp_control = 0; /* XXX ? */ 1593 bzero(ksc.sc_reserved, sizeof ksc.sc_reserved); /* XXX */ 1594 bzero(ksc.sc_xxx, sizeof ksc.sc_xxx); /* XXX */ 1595 1596 /* Save signal stack. */ 1597 ksc.sc_onstack = psp->ps_sigstk.ss_flags & SS_ONSTACK; 1598 1599 /* Save signal mask. */ 1600 ksc.sc_mask = *mask; 1601 1602 #ifdef COMPAT_13 1603 /* 1604 * XXX We always have to save an old style signal mask because 1605 * XXX we might be delivering a signal to a process which will 1606 * XXX escape from the signal in a non-standard way and invoke 1607 * XXX sigreturn() directly. 1608 */ 1609 { 1610 /* Note: it's a long in the stack frame. */ 1611 sigset13_t mask13; 1612 1613 native_sigset_to_sigset13(mask, &mask13); 1614 ksc.__sc_mask13 = mask13; 1615 } 1616 #endif 1617 1618 #ifdef COMPAT_OSF1 1619 /* 1620 * XXX Create an OSF/1-style sigcontext and associated goo. 1621 */ 1622 #endif 1623 1624 if (copyout(&ksc, (caddr_t)scp, fsize) != 0) { 1625 /* 1626 * Process has trashed its stack; give it an illegal 1627 * instruction to halt it in its tracks. 1628 */ 1629 #ifdef DEBUG 1630 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1631 printf("sendsig(%d): copyout failed on sig %d\n", 1632 p->p_pid, sig); 1633 #endif 1634 sigexit(p, SIGILL); 1635 /* NOTREACHED */ 1636 } 1637 #ifdef DEBUG 1638 if (sigdebug & SDB_FOLLOW) 1639 printf("sendsig(%d): sig %d scp %p code %lx\n", p->p_pid, sig, 1640 scp, code); 1641 #endif 1642 1643 /* Set up the registers to return to sigcode. */ 1644 frame->tf_regs[FRAME_PC] = (u_int64_t)psp->ps_sigcode; 1645 frame->tf_regs[FRAME_A0] = sig; 1646 frame->tf_regs[FRAME_A1] = code; 1647 frame->tf_regs[FRAME_A2] = (u_int64_t)scp; 1648 frame->tf_regs[FRAME_T12] = (u_int64_t)catcher; /* t12 is pv */ 1649 alpha_pal_wrusp((unsigned long)scp); 1650 1651 /* Remember that we're now on the signal stack. */ 1652 if (onstack) 1653 psp->ps_sigstk.ss_flags |= SS_ONSTACK; 1654 1655 #ifdef DEBUG 1656 if (sigdebug & SDB_FOLLOW) 1657 printf("sendsig(%d): pc %lx, catcher %lx\n", p->p_pid, 1658 frame->tf_regs[FRAME_PC], frame->tf_regs[FRAME_A3]); 1659 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1660 printf("sendsig(%d): sig %d returns\n", 1661 p->p_pid, sig); 1662 #endif 1663 } 1664 1665 /* 1666 * System call to cleanup state after a signal 1667 * has been taken. Reset signal mask and 1668 * stack state from context left by sendsig (above). 1669 * Return to previous pc and psl as specified by 1670 * context left by sendsig. Check carefully to 1671 * make sure that the user has not modified the 1672 * psl to gain improper privileges or to cause 1673 * a machine fault. 1674 */ 1675 /* ARGSUSED */ 1676 int 1677 sys___sigreturn14(p, v, retval) 1678 struct proc *p; 1679 void *v; 1680 register_t *retval; 1681 { 1682 struct sys___sigreturn14_args /* { 1683 syscallarg(struct sigcontext *) sigcntxp; 1684 } */ *uap = v; 1685 struct sigcontext *scp, ksc; 1686 1687 /* 1688 * The trampoline code hands us the context. 1689 * It is unsafe to keep track of it ourselves, in the event that a 1690 * program jumps out of a signal handler. 1691 */ 1692 scp = SCARG(uap, sigcntxp); 1693 #ifdef DEBUG 1694 if (sigdebug & SDB_FOLLOW) 1695 printf("sigreturn: pid %d, scp %p\n", p->p_pid, scp); 1696 #endif 1697 if (ALIGN(scp) != (u_int64_t)scp) 1698 return (EINVAL); 1699 1700 if (copyin((caddr_t)scp, &ksc, sizeof(ksc)) != 0) 1701 return (EFAULT); 1702 1703 if (ksc.sc_regs[R_ZERO] != 0xACEDBADE) /* magic number */ 1704 return (EINVAL); 1705 1706 /* Restore register context. */ 1707 p->p_md.md_tf->tf_regs[FRAME_PC] = ksc.sc_pc; 1708 p->p_md.md_tf->tf_regs[FRAME_PS] = 1709 (ksc.sc_ps | ALPHA_PSL_USERSET) & ~ALPHA_PSL_USERCLR; 1710 1711 regtoframe((struct reg *)ksc.sc_regs, p->p_md.md_tf); 1712 alpha_pal_wrusp(ksc.sc_regs[R_SP]); 1713 1714 /* XXX ksc.sc_ownedfp ? */ 1715 if (p == fpcurproc) 1716 fpcurproc = NULL; 1717 bcopy((struct fpreg *)ksc.sc_fpregs, &p->p_addr->u_pcb.pcb_fp, 1718 sizeof(struct fpreg)); 1719 /* XXX ksc.sc_fp_control ? */ 1720 1721 /* Restore signal stack. */ 1722 if (ksc.sc_onstack & SS_ONSTACK) 1723 p->p_sigacts->ps_sigstk.ss_flags |= SS_ONSTACK; 1724 else 1725 p->p_sigacts->ps_sigstk.ss_flags &= ~SS_ONSTACK; 1726 1727 /* Restore signal mask. */ 1728 (void) sigprocmask1(p, SIG_SETMASK, &ksc.sc_mask, 0); 1729 1730 #ifdef DEBUG 1731 if (sigdebug & SDB_FOLLOW) 1732 printf("sigreturn(%d): returns\n", p->p_pid); 1733 #endif 1734 return (EJUSTRETURN); 1735 } 1736 1737 /* 1738 * machine dependent system variables. 1739 */ 1740 int 1741 cpu_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 1742 int *name; 1743 u_int namelen; 1744 void *oldp; 1745 size_t *oldlenp; 1746 void *newp; 1747 size_t newlen; 1748 struct proc *p; 1749 { 1750 dev_t consdev; 1751 1752 /* all sysctl names at this level are terminal */ 1753 if (namelen != 1) 1754 return (ENOTDIR); /* overloaded */ 1755 1756 switch (name[0]) { 1757 case CPU_CONSDEV: 1758 if (cn_tab != NULL) 1759 consdev = cn_tab->cn_dev; 1760 else 1761 consdev = NODEV; 1762 return (sysctl_rdstruct(oldp, oldlenp, newp, &consdev, 1763 sizeof consdev)); 1764 1765 case CPU_ROOT_DEVICE: 1766 return (sysctl_rdstring(oldp, oldlenp, newp, 1767 root_device->dv_xname)); 1768 1769 case CPU_UNALIGNED_PRINT: 1770 return (sysctl_int(oldp, oldlenp, newp, newlen, 1771 &alpha_unaligned_print)); 1772 1773 case CPU_UNALIGNED_FIX: 1774 return (sysctl_int(oldp, oldlenp, newp, newlen, 1775 &alpha_unaligned_fix)); 1776 1777 case CPU_UNALIGNED_SIGBUS: 1778 return (sysctl_int(oldp, oldlenp, newp, newlen, 1779 &alpha_unaligned_sigbus)); 1780 1781 case CPU_BOOTED_KERNEL: 1782 return (sysctl_rdstring(oldp, oldlenp, newp, 1783 bootinfo.booted_kernel)); 1784 1785 default: 1786 return (EOPNOTSUPP); 1787 } 1788 /* NOTREACHED */ 1789 } 1790 1791 /* 1792 * Set registers on exec. 1793 */ 1794 void 1795 setregs(p, pack, stack) 1796 register struct proc *p; 1797 struct exec_package *pack; 1798 u_long stack; 1799 { 1800 struct trapframe *tfp = p->p_md.md_tf; 1801 #ifdef DEBUG 1802 int i; 1803 #endif 1804 1805 #ifdef DEBUG 1806 /* 1807 * Crash and dump, if the user requested it. 1808 */ 1809 if (boothowto & RB_DUMP) 1810 panic("crash requested by boot flags"); 1811 #endif 1812 1813 #ifdef DEBUG 1814 for (i = 0; i < FRAME_SIZE; i++) 1815 tfp->tf_regs[i] = 0xbabefacedeadbeef; 1816 #else 1817 bzero(tfp->tf_regs, FRAME_SIZE * sizeof tfp->tf_regs[0]); 1818 #endif 1819 bzero(&p->p_addr->u_pcb.pcb_fp, sizeof p->p_addr->u_pcb.pcb_fp); 1820 p->p_addr->u_pcb.pcb_fp.fpr_cr = FPCR_INED 1821 | FPCR_UNFD 1822 | FPCR_UNDZ 1823 | FPCR_DYN(FP_RN) 1824 | FPCR_OVFD 1825 | FPCR_DZED 1826 | FPCR_INVD 1827 | FPCR_DNZ; 1828 alpha_pal_wrusp(stack); 1829 tfp->tf_regs[FRAME_PS] = ALPHA_PSL_USERSET; 1830 tfp->tf_regs[FRAME_PC] = pack->ep_entry & ~3; 1831 1832 tfp->tf_regs[FRAME_A0] = stack; /* a0 = sp */ 1833 tfp->tf_regs[FRAME_A1] = 0; /* a1 = rtld cleanup */ 1834 tfp->tf_regs[FRAME_A2] = 0; /* a2 = rtld object */ 1835 tfp->tf_regs[FRAME_A3] = (u_int64_t)PS_STRINGS; /* a3 = ps_strings */ 1836 tfp->tf_regs[FRAME_T12] = tfp->tf_regs[FRAME_PC]; /* a.k.a. PV */ 1837 1838 p->p_md.md_flags &= ~MDP_FPUSED; 1839 if (fpcurproc == p) 1840 fpcurproc = NULL; 1841 } 1842 1843 void 1844 netintr() 1845 { 1846 int n, s; 1847 1848 s = splhigh(); 1849 n = netisr; 1850 netisr = 0; 1851 splx(s); 1852 1853 #define DONETISR(bit, fn) \ 1854 do { \ 1855 if (n & (1 << (bit))) \ 1856 fn; \ 1857 } while (0) 1858 1859 #ifdef INET 1860 #if NARP > 0 1861 DONETISR(NETISR_ARP, arpintr()); 1862 #endif 1863 DONETISR(NETISR_IP, ipintr()); 1864 #endif 1865 #ifdef INET6 1866 DONETISR(NETISR_IPV6, ip6intr()); 1867 #endif 1868 #ifdef NETATALK 1869 DONETISR(NETISR_ATALK, atintr()); 1870 #endif 1871 #ifdef NS 1872 DONETISR(NETISR_NS, nsintr()); 1873 #endif 1874 #ifdef ISO 1875 DONETISR(NETISR_ISO, clnlintr()); 1876 #endif 1877 #ifdef CCITT 1878 DONETISR(NETISR_CCITT, ccittintr()); 1879 #endif 1880 #ifdef NATM 1881 DONETISR(NETISR_NATM, natmintr()); 1882 #endif 1883 #if NPPP > 0 1884 DONETISR(NETISR_PPP, pppintr()); 1885 #endif 1886 1887 #undef DONETISR 1888 } 1889 1890 void 1891 do_sir() 1892 { 1893 u_int64_t n; 1894 1895 while ((n = alpha_atomic_loadlatch_q(&ssir, 0)) != 0) { 1896 #define COUNT_SOFT uvmexp.softs++ 1897 1898 #define DO_SIR(bit, fn) \ 1899 do { \ 1900 if (n & (bit)) { \ 1901 COUNT_SOFT; \ 1902 fn; \ 1903 } \ 1904 } while (0) 1905 1906 DO_SIR(SIR_NET, netintr()); 1907 DO_SIR(SIR_CLOCK, softclock()); 1908 #if NCOM > 0 1909 DO_SIR(SIR_SERIAL, comsoft()); 1910 #endif 1911 1912 #undef COUNT_SOFT 1913 #undef DO_SIR 1914 } 1915 } 1916 1917 int 1918 spl0() 1919 { 1920 1921 if (ssir) { 1922 (void) alpha_pal_swpipl(ALPHA_PSL_IPL_SOFT); 1923 do_sir(); 1924 } 1925 1926 return (alpha_pal_swpipl(ALPHA_PSL_IPL_0)); 1927 } 1928 1929 /* 1930 * The following primitives manipulate the run queues. _whichqs tells which 1931 * of the 32 queues _qs have processes in them. Setrunqueue puts processes 1932 * into queues, Remrunqueue removes them from queues. The running process is 1933 * on no queue, other processes are on a queue related to p->p_priority, 1934 * divided by 4 actually to shrink the 0-127 range of priorities into the 32 1935 * available queues. 1936 */ 1937 /* 1938 * setrunqueue(p) 1939 * proc *p; 1940 * 1941 * Call should be made at splclock(), and p->p_stat should be SRUN. 1942 */ 1943 1944 void 1945 setrunqueue(p) 1946 struct proc *p; 1947 { 1948 int bit; 1949 1950 /* firewall: p->p_back must be NULL */ 1951 if (p->p_back != NULL) 1952 panic("setrunqueue"); 1953 1954 bit = p->p_priority >> 2; 1955 whichqs |= (1 << bit); 1956 p->p_forw = (struct proc *)&qs[bit]; 1957 p->p_back = qs[bit].ph_rlink; 1958 p->p_back->p_forw = p; 1959 qs[bit].ph_rlink = p; 1960 } 1961 1962 /* 1963 * remrunqueue(p) 1964 * 1965 * Call should be made at splclock(). 1966 */ 1967 void 1968 remrunqueue(p) 1969 struct proc *p; 1970 { 1971 int bit; 1972 1973 bit = p->p_priority >> 2; 1974 if ((whichqs & (1 << bit)) == 0) 1975 panic("remrunqueue"); 1976 1977 p->p_back->p_forw = p->p_forw; 1978 p->p_forw->p_back = p->p_back; 1979 p->p_back = NULL; /* for firewall checking. */ 1980 1981 if ((struct proc *)&qs[bit] == qs[bit].ph_link) 1982 whichqs &= ~(1 << bit); 1983 } 1984 1985 /* 1986 * Return the best possible estimate of the time in the timeval 1987 * to which tvp points. Unfortunately, we can't read the hardware registers. 1988 * We guarantee that the time will be greater than the value obtained by a 1989 * previous call. 1990 */ 1991 void 1992 microtime(tvp) 1993 register struct timeval *tvp; 1994 { 1995 int s = splclock(); 1996 static struct timeval lasttime; 1997 1998 *tvp = time; 1999 #ifdef notdef 2000 tvp->tv_usec += clkread(); 2001 while (tvp->tv_usec >= 1000000) { 2002 tvp->tv_sec++; 2003 tvp->tv_usec -= 1000000; 2004 } 2005 #endif 2006 if (tvp->tv_sec == lasttime.tv_sec && 2007 tvp->tv_usec <= lasttime.tv_usec && 2008 (tvp->tv_usec = lasttime.tv_usec + 1) >= 1000000) { 2009 tvp->tv_sec++; 2010 tvp->tv_usec -= 1000000; 2011 } 2012 lasttime = *tvp; 2013 splx(s); 2014 } 2015 2016 /* 2017 * Wait "n" microseconds. 2018 */ 2019 void 2020 delay(n) 2021 unsigned long n; 2022 { 2023 long N = cycles_per_usec * (n); 2024 2025 /* 2026 * XXX Should be written to use RPCC? 2027 */ 2028 2029 __asm __volatile( 2030 "# The 2 corresponds to the insn count\n" 2031 "1: subq %2, %1, %0 \n" 2032 " bgt %0, 1b" 2033 : "=r" (N) 2034 : "i" (2), "0" (N)); 2035 } 2036 2037 #if defined(COMPAT_OSF1) || 1 /* XXX */ 2038 void cpu_exec_ecoff_setregs __P((struct proc *, struct exec_package *, 2039 u_long)); 2040 2041 void 2042 cpu_exec_ecoff_setregs(p, epp, stack) 2043 struct proc *p; 2044 struct exec_package *epp; 2045 u_long stack; 2046 { 2047 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2048 2049 setregs(p, epp, stack); 2050 p->p_md.md_tf->tf_regs[FRAME_GP] = execp->a.gp_value; 2051 } 2052 2053 /* 2054 * cpu_exec_ecoff_hook(): 2055 * cpu-dependent ECOFF format hook for execve(). 2056 * 2057 * Do any machine-dependent diddling of the exec package when doing ECOFF. 2058 * 2059 */ 2060 int 2061 cpu_exec_ecoff_hook(p, epp) 2062 struct proc *p; 2063 struct exec_package *epp; 2064 { 2065 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2066 extern struct emul emul_netbsd; 2067 int error; 2068 extern int osf1_exec_ecoff_hook(struct proc *p, 2069 struct exec_package *epp); 2070 2071 switch (execp->f.f_magic) { 2072 #ifdef COMPAT_OSF1 2073 case ECOFF_MAGIC_ALPHA: 2074 error = osf1_exec_ecoff_hook(p, epp); 2075 break; 2076 #endif 2077 2078 case ECOFF_MAGIC_NETBSD_ALPHA: 2079 epp->ep_emul = &emul_netbsd; 2080 error = 0; 2081 break; 2082 2083 default: 2084 error = ENOEXEC; 2085 } 2086 return (error); 2087 } 2088 #endif 2089 2090 int 2091 alpha_pa_access(pa) 2092 u_long pa; 2093 { 2094 int i; 2095 2096 for (i = 0; i < mem_cluster_cnt; i++) { 2097 if (pa < mem_clusters[i].start) 2098 continue; 2099 if ((pa - mem_clusters[i].start) >= 2100 (mem_clusters[i].size & ~PAGE_MASK)) 2101 continue; 2102 return (mem_clusters[i].size & PAGE_MASK); /* prot */ 2103 } 2104 return (PROT_NONE); 2105 } 2106 2107 /* XXX XXX BEGIN XXX XXX */ 2108 paddr_t alpha_XXX_dmamap_or; /* XXX */ 2109 /* XXX */ 2110 paddr_t /* XXX */ 2111 alpha_XXX_dmamap(v) /* XXX */ 2112 vaddr_t v; /* XXX */ 2113 { /* XXX */ 2114 /* XXX */ 2115 return (vtophys(v) | alpha_XXX_dmamap_or); /* XXX */ 2116 } /* XXX */ 2117 /* XXX XXX END XXX XXX */ 2118 2119 struct mchkinfo * 2120 cpu_mchkinfo() 2121 { 2122 if (mchkinfo_all_cpus == NULL) 2123 return &startup_info; 2124 return mchkinfo_all_cpus + alpha_pal_whami(); 2125 } 2126 2127 char * 2128 dot_conv(x) 2129 unsigned long x; 2130 { 2131 int i; 2132 char *xc; 2133 static int next; 2134 static char space[2][20]; 2135 2136 xc = space[next ^= 1] + sizeof space[0]; 2137 *--xc = '\0'; 2138 for (i = 0;; ++i) { 2139 if (i && (i & 3) == 0) 2140 *--xc = '.'; 2141 *--xc = "0123456789abcdef"[x & 0xf]; 2142 x >>= 4; 2143 if (x == 0) 2144 break; 2145 } 2146 return xc; 2147 } 2148
Indexes created Thu Oct 02 10:09:58 GMT 2025