machdep.c revision 1.180
1 /* $NetBSD: machdep.c,v 1.180 1999/08/16 02:59:22 simonb 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_pmap_new.h" 70 #include "opt_dec_3000_300.h" 71 #include "opt_dec_3000_500.h" 72 #include "opt_compat_osf1.h" 73 #include "opt_compat_netbsd.h" 74 #include "opt_inet.h" 75 #include "opt_atalk.h" 76 #include "opt_ccitt.h" 77 #include "opt_iso.h" 78 #include "opt_ns.h" 79 #include "opt_natm.h" 80 81 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 82 83 __KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.180 1999/08/16 02:59:22 simonb Exp $"); 84 85 #include <sys/param.h> 86 #include <sys/systm.h> 87 #include <sys/signalvar.h> 88 #include <sys/kernel.h> 89 #include <sys/map.h> 90 #include <sys/proc.h> 91 #include <sys/buf.h> 92 #include <sys/reboot.h> 93 #include <sys/device.h> 94 #include <sys/file.h> 95 #include <sys/callout.h> 96 #include <sys/malloc.h> 97 #include <sys/mbuf.h> 98 #include <sys/mman.h> 99 #include <sys/msgbuf.h> 100 #include <sys/ioctl.h> 101 #include <sys/tty.h> 102 #include <sys/user.h> 103 #include <sys/exec.h> 104 #include <sys/exec_ecoff.h> 105 #include <vm/vm.h> 106 #include <sys/sysctl.h> 107 #include <sys/core.h> 108 #include <sys/kcore.h> 109 #include <machine/kcore.h> 110 111 #include <sys/mount.h> 112 #include <sys/syscallargs.h> 113 114 #include <vm/vm_kern.h> 115 116 #include <uvm/uvm_extern.h> 117 118 #include <dev/cons.h> 119 120 #include <machine/autoconf.h> 121 #include <machine/cpu.h> 122 #include <machine/reg.h> 123 #include <machine/rpb.h> 124 #include <machine/prom.h> 125 #include <machine/conf.h> 126 #include <machine/ieeefp.h> 127 128 #include <net/netisr.h> 129 #include <net/if.h> 130 131 #ifdef INET 132 #include <net/route.h> 133 #include <netinet/in.h> 134 #include <netinet/ip_var.h> 135 #include "arp.h" 136 #if NARP > 0 137 #include <netinet/if_inarp.h> 138 #endif 139 #endif 140 #ifdef INET6 141 # ifndef INET 142 # include <netinet/in.h> 143 # endif 144 #include <netinet6/ip6.h> 145 #include <netinet6/ip6_var.h> 146 #endif 147 #ifdef NS 148 #include <netns/ns_var.h> 149 #endif 150 #ifdef ISO 151 #include <netiso/iso.h> 152 #include <netiso/clnp.h> 153 #endif 154 #ifdef CCITT 155 #include <netccitt/x25.h> 156 #include <netccitt/pk.h> 157 #include <netccitt/pk_extern.h> 158 #endif 159 #ifdef NATM 160 #include <netnatm/natm.h> 161 #endif 162 #ifdef NETATALK 163 #include <netatalk/at_extern.h> 164 #endif 165 #include "ppp.h" 166 #if NPPP > 0 167 #include <net/ppp_defs.h> 168 #include <net/if_ppp.h> 169 #endif 170 171 #ifdef DDB 172 #include <machine/db_machdep.h> 173 #include <ddb/db_access.h> 174 #include <ddb/db_sym.h> 175 #include <ddb/db_extern.h> 176 #include <ddb/db_interface.h> 177 #endif 178 179 #include <machine/alpha.h> 180 #include <machine/intrcnt.h> 181 182 #include "com.h" 183 #if NCOM > 0 184 extern void comsoft __P((void)); 185 #endif 186 187 vm_map_t exec_map = NULL; 188 vm_map_t mb_map = NULL; 189 vm_map_t phys_map = NULL; 190 191 caddr_t msgbufaddr; 192 193 int maxmem; /* max memory per process */ 194 195 int totalphysmem; /* total amount of physical memory in system */ 196 int physmem; /* physical memory used by NetBSD + some rsvd */ 197 int resvmem; /* amount of memory reserved for PROM */ 198 int unusedmem; /* amount of memory for OS that we don't use */ 199 int unknownmem; /* amount of memory with an unknown use */ 200 201 int cputype; /* system type, from the RPB */ 202 203 /* 204 * XXX We need an address to which we can assign things so that they 205 * won't be optimized away because we didn't use the value. 206 */ 207 u_int32_t no_optimize; 208 209 /* the following is used externally (sysctl_hw) */ 210 char machine[] = MACHINE; /* from <machine/param.h> */ 211 char machine_arch[] = MACHINE_ARCH; /* from <machine/param.h> */ 212 char cpu_model[128]; 213 214 struct user *proc0paddr; 215 216 /* Number of machine cycles per microsecond */ 217 u_int64_t cycles_per_usec; 218 219 /* number of cpus in the box. really! */ 220 int ncpus; 221 222 /* machine check info array, valloc()'ed in mdallocsys() */ 223 224 static struct mchkinfo startup_info, 225 *mchkinfo_all_cpus; 226 227 struct bootinfo_kernel bootinfo; 228 229 /* For built-in TCDS */ 230 #if defined(DEC_3000_300) || defined(DEC_3000_500) 231 u_int8_t dec_3000_scsiid[2], dec_3000_scsifast[2]; 232 #endif 233 234 struct platform platform; 235 236 u_int32_t vm_kmem_size = _VM_KMEM_SIZE; 237 u_int32_t vm_phys_size = _VM_PHYS_SIZE; 238 239 #ifdef DDB 240 /* start and end of kernel symbol table */ 241 void *ksym_start, *ksym_end; 242 #endif 243 244 /* for cpu_sysctl() */ 245 int alpha_unaligned_print = 1; /* warn about unaligned accesses */ 246 int alpha_unaligned_fix = 1; /* fix up unaligned accesses */ 247 int alpha_unaligned_sigbus = 0; /* don't SIGBUS on fixed-up accesses */ 248 249 /* 250 * XXX This should be dynamically sized, but we have the chicken-egg problem! 251 * XXX it should also be larger than it is, because not all of the mddt 252 * XXX clusters end up being used for VM. 253 */ 254 phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX]; /* low size bits overloaded */ 255 int mem_cluster_cnt; 256 257 int cpu_dump __P((void)); 258 int cpu_dumpsize __P((void)); 259 u_long cpu_dump_mempagecnt __P((void)); 260 void dumpsys __P((void)); 261 void identifycpu __P((void)); 262 caddr_t mdallocsys __P((caddr_t)); 263 void netintr __P((void)); 264 void printregs __P((struct reg *)); 265 266 void 267 alpha_init(pfn, ptb, bim, bip, biv) 268 u_long pfn; /* first free PFN number */ 269 u_long ptb; /* PFN of current level 1 page table */ 270 u_long bim; /* bootinfo magic */ 271 u_long bip; /* bootinfo pointer */ 272 u_long biv; /* bootinfo version */ 273 { 274 extern char kernel_text[], _end[]; 275 struct mddt *mddtp; 276 struct mddt_cluster *memc; 277 int i, mddtweird; 278 struct vm_physseg *vps; 279 vaddr_t kernstart, kernend; 280 paddr_t kernstartpfn, kernendpfn, pfn0, pfn1; 281 vsize_t size; 282 char *p; 283 caddr_t v; 284 char *bootinfo_msg; 285 286 /* NO OUTPUT ALLOWED UNTIL FURTHER NOTICE */ 287 288 /* 289 * Turn off interrupts (not mchecks) and floating point. 290 * Make sure the instruction and data streams are consistent. 291 */ 292 (void)alpha_pal_swpipl(ALPHA_PSL_IPL_HIGH); 293 alpha_pal_wrfen(0); 294 ALPHA_TBIA(); 295 alpha_pal_imb(); 296 297 /* 298 * Get critical system information (if possible, from the 299 * information provided by the boot program). 300 */ 301 bootinfo_msg = NULL; 302 if (bim == BOOTINFO_MAGIC) { 303 if (biv == 0) { /* backward compat */ 304 biv = *(u_long *)bip; 305 bip += 8; 306 } 307 switch (biv) { 308 case 1: { 309 struct bootinfo_v1 *v1p = (struct bootinfo_v1 *)bip; 310 311 bootinfo.ssym = v1p->ssym; 312 bootinfo.esym = v1p->esym; 313 /* hwrpb may not be provided by boot block in v1 */ 314 if (v1p->hwrpb != NULL) { 315 bootinfo.hwrpb_phys = 316 ((struct rpb *)v1p->hwrpb)->rpb_phys; 317 bootinfo.hwrpb_size = v1p->hwrpbsize; 318 } else { 319 bootinfo.hwrpb_phys = 320 ((struct rpb *)HWRPB_ADDR)->rpb_phys; 321 bootinfo.hwrpb_size = 322 ((struct rpb *)HWRPB_ADDR)->rpb_size; 323 } 324 bcopy(v1p->boot_flags, bootinfo.boot_flags, 325 min(sizeof v1p->boot_flags, 326 sizeof bootinfo.boot_flags)); 327 bcopy(v1p->booted_kernel, bootinfo.booted_kernel, 328 min(sizeof v1p->booted_kernel, 329 sizeof bootinfo.booted_kernel)); 330 /* booted dev not provided in bootinfo */ 331 init_prom_interface((struct rpb *) 332 ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys)); 333 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 334 sizeof bootinfo.booted_dev); 335 break; 336 } 337 default: 338 bootinfo_msg = "unknown bootinfo version"; 339 goto nobootinfo; 340 } 341 } else { 342 bootinfo_msg = "boot program did not pass bootinfo"; 343 nobootinfo: 344 bootinfo.ssym = (u_long)_end; 345 bootinfo.esym = (u_long)_end; 346 bootinfo.hwrpb_phys = ((struct rpb *)HWRPB_ADDR)->rpb_phys; 347 bootinfo.hwrpb_size = ((struct rpb *)HWRPB_ADDR)->rpb_size; 348 init_prom_interface((struct rpb *)HWRPB_ADDR); 349 prom_getenv(PROM_E_BOOTED_OSFLAGS, bootinfo.boot_flags, 350 sizeof bootinfo.boot_flags); 351 prom_getenv(PROM_E_BOOTED_FILE, bootinfo.booted_kernel, 352 sizeof bootinfo.booted_kernel); 353 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 354 sizeof bootinfo.booted_dev); 355 } 356 357 /* 358 * Initialize the kernel's mapping of the RPB. It's needed for 359 * lots of things. 360 */ 361 hwrpb = (struct rpb *)ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys); 362 363 #if defined(DEC_3000_300) || defined(DEC_3000_500) 364 if (hwrpb->rpb_type == ST_DEC_3000_300 || 365 hwrpb->rpb_type == ST_DEC_3000_500) { 366 prom_getenv(PROM_E_SCSIID, dec_3000_scsiid, 367 sizeof(dec_3000_scsiid)); 368 prom_getenv(PROM_E_SCSIFAST, dec_3000_scsifast, 369 sizeof(dec_3000_scsifast)); 370 } 371 #endif 372 373 /* 374 * Remember how many cycles there are per microsecond, 375 * so that we can use delay(). Round up, for safety. 376 */ 377 cycles_per_usec = (hwrpb->rpb_cc_freq + 999999) / 1000000; 378 379 /* 380 * Initalize the (temporary) bootstrap console interface, so 381 * we can use printf until the VM system starts being setup. 382 * The real console is initialized before then. 383 */ 384 init_bootstrap_console(); 385 386 /* OUTPUT NOW ALLOWED */ 387 388 /* delayed from above */ 389 if (bootinfo_msg) 390 printf("WARNING: %s (0x%lx, 0x%lx, 0x%lx)\n", 391 bootinfo_msg, bim, bip, biv); 392 393 /* Initialize the trap vectors on the primary processor. */ 394 trap_init(); 395 396 /* 397 * Find out what hardware we're on, and do basic initialization. 398 */ 399 cputype = hwrpb->rpb_type; 400 if (cputype < 0) { 401 /* 402 * At least some white-box systems have SRM which 403 * reports a systype that's the negative of their 404 * blue-box counterpart. 405 */ 406 cputype = -cputype; 407 } 408 if (cputype >= ncpuinit) { 409 platform_not_supported(); 410 /* NOTREACHED */ 411 } 412 (*cpuinit[cputype].init)(); 413 strcpy(cpu_model, platform.model); 414 415 /* 416 * Initalize the real console, so the the bootstrap console is 417 * no longer necessary. 418 */ 419 (*platform.cons_init)(); 420 421 #ifdef DIAGNOSTIC 422 /* Paranoid sanity checking */ 423 424 /* We should always be running on the the primary. */ 425 assert(hwrpb->rpb_primary_cpu_id == alpha_pal_whami()); 426 427 /* 428 * On single-CPU systypes, the primary should always be CPU 0, 429 * except on Alpha 8200 systems where the CPU id is related 430 * to the VID, which is related to the Turbo Laser node id. 431 */ 432 if (cputype != ST_DEC_21000) 433 assert(hwrpb->rpb_primary_cpu_id == 0); 434 #endif 435 436 /* NO MORE FIRMWARE ACCESS ALLOWED */ 437 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 438 /* 439 * XXX (unless _PMAP_MAY_USE_PROM_CONSOLE is defined and 440 * XXX pmap_uses_prom_console() evaluates to non-zero.) 441 */ 442 #endif 443 444 /* 445 * find out this system's page size 446 */ 447 PAGE_SIZE = hwrpb->rpb_page_size; 448 if (PAGE_SIZE != 8192) 449 panic("page size %d != 8192?!", PAGE_SIZE); 450 451 /* 452 * Initialize PAGE_SIZE-dependent variables. 453 */ 454 uvm_setpagesize(); 455 456 /* 457 * Find the beginning and end of the kernel (and leave a 458 * bit of space before the beginning for the bootstrap 459 * stack). 460 */ 461 kernstart = trunc_page(kernel_text) - 2 * PAGE_SIZE; 462 #ifdef DDB 463 ksym_start = (void *)bootinfo.ssym; 464 ksym_end = (void *)bootinfo.esym; 465 kernend = (vaddr_t)round_page(ksym_end); 466 #else 467 kernend = (vaddr_t)round_page(_end); 468 #endif 469 470 kernstartpfn = atop(ALPHA_K0SEG_TO_PHYS(kernstart)); 471 kernendpfn = atop(ALPHA_K0SEG_TO_PHYS(kernend)); 472 473 /* 474 * Find out how much memory is available, by looking at 475 * the memory cluster descriptors. This also tries to do 476 * its best to detect things things that have never been seen 477 * before... 478 */ 479 mddtp = (struct mddt *)(((caddr_t)hwrpb) + hwrpb->rpb_memdat_off); 480 481 /* MDDT SANITY CHECKING */ 482 mddtweird = 0; 483 if (mddtp->mddt_cluster_cnt < 2) { 484 mddtweird = 1; 485 printf("WARNING: weird number of mem clusters: %lu\n", 486 mddtp->mddt_cluster_cnt); 487 } 488 489 #if 0 490 printf("Memory cluster count: %d\n", mddtp->mddt_cluster_cnt); 491 #endif 492 493 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 494 memc = &mddtp->mddt_clusters[i]; 495 #if 0 496 printf("MEMC %d: pfn 0x%lx cnt 0x%lx usage 0x%lx\n", i, 497 memc->mddt_pfn, memc->mddt_pg_cnt, memc->mddt_usage); 498 #endif 499 totalphysmem += memc->mddt_pg_cnt; 500 if (mem_cluster_cnt < VM_PHYSSEG_MAX) { /* XXX */ 501 mem_clusters[mem_cluster_cnt].start = 502 ptoa(memc->mddt_pfn); 503 mem_clusters[mem_cluster_cnt].size = 504 ptoa(memc->mddt_pg_cnt); 505 if (memc->mddt_usage & MDDT_mbz || 506 memc->mddt_usage & MDDT_NONVOLATILE || /* XXX */ 507 memc->mddt_usage & MDDT_PALCODE) 508 mem_clusters[mem_cluster_cnt].size |= 509 PROT_READ; 510 else 511 mem_clusters[mem_cluster_cnt].size |= 512 PROT_READ | PROT_WRITE | PROT_EXEC; 513 mem_cluster_cnt++; 514 } 515 516 if (memc->mddt_usage & MDDT_mbz) { 517 mddtweird = 1; 518 printf("WARNING: mem cluster %d has weird " 519 "usage 0x%lx\n", i, memc->mddt_usage); 520 unknownmem += memc->mddt_pg_cnt; 521 continue; 522 } 523 if (memc->mddt_usage & MDDT_NONVOLATILE) { 524 /* XXX should handle these... */ 525 printf("WARNING: skipping non-volatile mem " 526 "cluster %d\n", i); 527 unusedmem += memc->mddt_pg_cnt; 528 continue; 529 } 530 if (memc->mddt_usage & MDDT_PALCODE) { 531 resvmem += memc->mddt_pg_cnt; 532 continue; 533 } 534 535 /* 536 * We have a memory cluster available for system 537 * software use. We must determine if this cluster 538 * holds the kernel. 539 */ 540 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 541 /* 542 * XXX If the kernel uses the PROM console, we only use the 543 * XXX memory after the kernel in the first system segment, 544 * XXX to avoid clobbering prom mapping, data, etc. 545 */ 546 if (!pmap_uses_prom_console() || physmem == 0) { 547 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 548 physmem += memc->mddt_pg_cnt; 549 pfn0 = memc->mddt_pfn; 550 pfn1 = memc->mddt_pfn + memc->mddt_pg_cnt; 551 if (pfn0 <= kernstartpfn && kernendpfn <= pfn1) { 552 /* 553 * Must compute the location of the kernel 554 * within the segment. 555 */ 556 #if 0 557 printf("Cluster %d contains kernel\n", i); 558 #endif 559 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 560 if (!pmap_uses_prom_console()) { 561 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 562 if (pfn0 < kernstartpfn) { 563 /* 564 * There is a chunk before the kernel. 565 */ 566 #if 0 567 printf("Loading chunk before kernel: " 568 "0x%lx / 0x%lx\n", pfn0, kernstartpfn); 569 #endif 570 uvm_page_physload(pfn0, kernstartpfn, 571 pfn0, kernstartpfn, VM_FREELIST_DEFAULT); 572 } 573 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 574 } 575 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 576 if (kernendpfn < pfn1) { 577 /* 578 * There is a chunk after the kernel. 579 */ 580 #if 0 581 printf("Loading chunk after kernel: " 582 "0x%lx / 0x%lx\n", kernendpfn, pfn1); 583 #endif 584 uvm_page_physload(kernendpfn, pfn1, 585 kernendpfn, pfn1, VM_FREELIST_DEFAULT); 586 } 587 } else { 588 /* 589 * Just load this cluster as one chunk. 590 */ 591 #if 0 592 printf("Loading cluster %d: 0x%lx / 0x%lx\n", i, 593 pfn0, pfn1); 594 #endif 595 uvm_page_physload(pfn0, pfn1, pfn0, pfn1, 596 VM_FREELIST_DEFAULT); 597 } 598 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 599 } 600 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 601 } 602 603 /* 604 * Dump out the MDDT if it looks odd... 605 */ 606 if (mddtweird) { 607 printf("\n"); 608 printf("complete memory cluster information:\n"); 609 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 610 printf("mddt %d:\n", i); 611 printf("\tpfn %lx\n", 612 mddtp->mddt_clusters[i].mddt_pfn); 613 printf("\tcnt %lx\n", 614 mddtp->mddt_clusters[i].mddt_pg_cnt); 615 printf("\ttest %lx\n", 616 mddtp->mddt_clusters[i].mddt_pg_test); 617 printf("\tbva %lx\n", 618 mddtp->mddt_clusters[i].mddt_v_bitaddr); 619 printf("\tbpa %lx\n", 620 mddtp->mddt_clusters[i].mddt_p_bitaddr); 621 printf("\tbcksum %lx\n", 622 mddtp->mddt_clusters[i].mddt_bit_cksum); 623 printf("\tusage %lx\n", 624 mddtp->mddt_clusters[i].mddt_usage); 625 } 626 printf("\n"); 627 } 628 629 if (totalphysmem == 0) 630 panic("can't happen: system seems to have no memory!"); 631 632 #ifdef LIMITMEM 633 /* 634 * XXX Kludge so we can run on machines with memory larger 635 * XXX than 1G until all device drivers are converted to 636 * XXX use bus_dma. (Relies on the fact that vm_physmem 637 * XXX sorted in order of increasing addresses.) 638 */ 639 if (vm_physmem[vm_nphysseg - 1].end > atop(LIMITMEM * 1024 * 1024)) { 640 641 printf("******** LIMITING MEMORY TO %dMB **********\n", 642 LIMITMEM); 643 644 do { 645 u_long ovf; 646 647 vps = &vm_physmem[vm_nphysseg - 1]; 648 649 if (vps->start >= atop(LIMITMEM * 1024 * 1024)) { 650 /* 651 * If the start is too high, just drop 652 * the whole segment. 653 * 654 * XXX can start != avail_start in this 655 * XXX case? wouldn't that mean that 656 * XXX some memory was stolen above the 657 * XXX limit? What to do? 658 */ 659 ovf = vps->end - vps->start; 660 vm_nphysseg--; 661 } else { 662 /* 663 * If the start is OK, calculate how much 664 * to drop and drop it. 665 */ 666 ovf = vps->end - atop(LIMITMEM * 1024 * 1024); 667 vps->end -= ovf; 668 vps->avail_end -= ovf; 669 } 670 physmem -= ovf; 671 unusedmem += ovf; 672 } while (vps->end > atop(LIMITMEM * 1024 * 1024)); 673 } 674 #endif /* LIMITMEM */ 675 676 maxmem = physmem; 677 678 #if 0 679 printf("totalphysmem = %d\n", totalphysmem); 680 printf("physmem = %d\n", physmem); 681 printf("resvmem = %d\n", resvmem); 682 printf("unusedmem = %d\n", unusedmem); 683 printf("unknownmem = %d\n", unknownmem); 684 #endif 685 686 /* 687 * Adjust some parameters if the amount of physmem 688 * available would cause us to croak. This is completely 689 * eyeballed and isn't meant to be the final answer. 690 * vm_phys_size is probably the only one to really worry 691 * about. 692 * 693 * It's for booting a GENERIC kernel on a large memory platform. 694 */ 695 if (physmem >= atop(128 * 1024 * 1024)) { 696 vm_kmem_size <<= 3; 697 vm_phys_size <<= 2; 698 } 699 700 /* 701 * Initialize error message buffer (at end of core). 702 */ 703 { 704 size_t sz = round_page(MSGBUFSIZE); 705 706 vps = &vm_physmem[vm_nphysseg - 1]; 707 708 /* shrink so that it'll fit in the last segment */ 709 if ((vps->avail_end - vps->avail_start) < atop(sz)) 710 sz = ptoa(vps->avail_end - vps->avail_start); 711 712 vps->end -= atop(sz); 713 vps->avail_end -= atop(sz); 714 msgbufaddr = (caddr_t) ALPHA_PHYS_TO_K0SEG(ptoa(vps->end)); 715 initmsgbuf(msgbufaddr, sz); 716 717 /* Remove the last segment if it now has no pages. */ 718 if (vps->start == vps->end) 719 vm_nphysseg--; 720 721 /* warn if the message buffer had to be shrunk */ 722 if (sz != round_page(MSGBUFSIZE)) 723 printf("WARNING: %ld bytes not available for msgbuf in last cluster (%ld used)\n", 724 round_page(MSGBUFSIZE), sz); 725 726 } 727 728 /* 729 * Init mapping for u page(s) for proc 0 730 */ 731 proc0.p_addr = proc0paddr = 732 (struct user *)pmap_steal_memory(UPAGES * PAGE_SIZE, NULL, NULL); 733 734 /* 735 * Allocate space for system data structures. These data structures 736 * are allocated here instead of cpu_startup() because physical 737 * memory is directly addressable. We don't have to map these into 738 * virtual address space. 739 */ 740 size = (vsize_t)allocsys(NULL, mdallocsys); 741 v = (caddr_t)pmap_steal_memory(size, NULL, NULL); 742 if ((allocsys(v, mdallocsys) - v) != size) 743 panic("alpha_init: table size inconsistency"); 744 745 /* 746 * Initialize the virtual memory system, and set the 747 * page table base register in proc 0's PCB. 748 */ 749 pmap_bootstrap(ALPHA_PHYS_TO_K0SEG(ptb << PGSHIFT), 750 hwrpb->rpb_max_asn, hwrpb->rpb_pcs_cnt); 751 752 /* 753 * Initialize the rest of proc 0's PCB, and cache its physical 754 * address. 755 */ 756 proc0.p_md.md_pcbpaddr = 757 (struct pcb *)ALPHA_K0SEG_TO_PHYS((vaddr_t)&proc0paddr->u_pcb); 758 759 /* 760 * Set the kernel sp, reserving space for an (empty) trapframe, 761 * and make proc0's trapframe pointer point to it for sanity. 762 */ 763 proc0paddr->u_pcb.pcb_hw.apcb_ksp = 764 (u_int64_t)proc0paddr + USPACE - sizeof(struct trapframe); 765 proc0.p_md.md_tf = 766 (struct trapframe *)proc0paddr->u_pcb.pcb_hw.apcb_ksp; 767 768 /* 769 * Look at arguments passed to us and compute boothowto. 770 */ 771 772 boothowto = RB_SINGLE; 773 #ifdef KADB 774 boothowto |= RB_KDB; 775 #endif 776 for (p = bootinfo.boot_flags; p && *p != '\0'; p++) { 777 /* 778 * Note that we'd really like to differentiate case here, 779 * but the Alpha AXP Architecture Reference Manual 780 * says that we shouldn't. 781 */ 782 switch (*p) { 783 case 'a': /* autoboot */ 784 case 'A': 785 boothowto &= ~RB_SINGLE; 786 break; 787 788 #ifdef DEBUG 789 case 'c': /* crash dump immediately after autoconfig */ 790 case 'C': 791 boothowto |= RB_DUMP; 792 break; 793 #endif 794 795 #if defined(KGDB) || defined(DDB) 796 case 'd': /* break into the kernel debugger ASAP */ 797 case 'D': 798 boothowto |= RB_KDB; 799 break; 800 #endif 801 802 case 'h': /* always halt, never reboot */ 803 case 'H': 804 boothowto |= RB_HALT; 805 break; 806 807 #if 0 808 case 'm': /* mini root present in memory */ 809 case 'M': 810 boothowto |= RB_MINIROOT; 811 break; 812 #endif 813 814 case 'n': /* askname */ 815 case 'N': 816 boothowto |= RB_ASKNAME; 817 break; 818 819 case 's': /* single-user (default, supported for sanity) */ 820 case 'S': 821 boothowto |= RB_SINGLE; 822 break; 823 824 case '-': 825 /* 826 * Just ignore this. It's not required, but it's 827 * common for it to be passed regardless. 828 */ 829 break; 830 831 default: 832 printf("Unrecognized boot flag '%c'.\n", *p); 833 break; 834 } 835 } 836 837 838 /* 839 * Figure out the number of cpus in the box, from RPB fields. 840 * Really. We mean it. 841 */ 842 for (i = 0; i < hwrpb->rpb_pcs_cnt; i++) { 843 struct pcs *pcsp; 844 845 pcsp = LOCATE_PCS(hwrpb, i); 846 if ((pcsp->pcs_flags & PCS_PP) != 0) 847 ncpus++; 848 } 849 850 /* 851 * Initialize debuggers, and break into them if appropriate. 852 */ 853 #ifdef DDB 854 db_machine_init(); 855 ddb_init((int)((u_int64_t)ksym_end - (u_int64_t)ksym_start), 856 ksym_start, ksym_end); 857 if (boothowto & RB_KDB) 858 Debugger(); 859 #endif 860 #ifdef KGDB 861 if (boothowto & RB_KDB) 862 kgdb_connect(0); 863 #endif 864 /* 865 * Figure out our clock frequency, from RPB fields. 866 */ 867 hz = hwrpb->rpb_intr_freq >> 12; 868 if (!(60 <= hz && hz <= 10240)) { 869 hz = 1024; 870 #ifdef DIAGNOSTIC 871 printf("WARNING: unbelievable rpb_intr_freq: %ld (%d hz)\n", 872 hwrpb->rpb_intr_freq, hz); 873 #endif 874 } 875 } 876 877 caddr_t 878 mdallocsys(v) 879 caddr_t v; 880 { 881 /* 882 * There appears to be a correlation between the number 883 * of processor slots defined in the HWRPB and the whami 884 * value that can be returned. 885 */ 886 ALLOCSYS(v, mchkinfo_all_cpus, struct mchkinfo, hwrpb->rpb_pcs_cnt); 887 return (v); 888 } 889 890 void 891 consinit() 892 { 893 894 /* 895 * Everything related to console initialization is done 896 * in alpha_init(). 897 */ 898 #if defined(DIAGNOSTIC) && defined(_PMAP_MAY_USE_PROM_CONSOLE) 899 printf("consinit: %susing prom console\n", 900 pmap_uses_prom_console() ? "" : "not "); 901 #endif 902 } 903 904 #include "pckbc.h" 905 #include "pckbd.h" 906 #if (NPCKBC > 0) && (NPCKBD == 0) 907 908 #include <dev/isa/pckbcvar.h> 909 910 /* 911 * This is called by the pbkbc driver if no pckbd is configured. 912 * On the i386, it is used to glue in the old, deprecated console 913 * code. On the Alpha, it does nothing. 914 */ 915 int 916 pckbc_machdep_cnattach(kbctag, kbcslot) 917 pckbc_tag_t kbctag; 918 pckbc_slot_t kbcslot; 919 { 920 921 return (ENXIO); 922 } 923 #endif /* NPCKBC > 0 && NPCKBD == 0 */ 924 925 void 926 cpu_startup() 927 { 928 register unsigned i; 929 int base, residual; 930 vaddr_t minaddr, maxaddr; 931 vsize_t size; 932 char pbuf[9]; 933 #if defined(DEBUG) 934 extern int pmapdebug; 935 int opmapdebug = pmapdebug; 936 937 pmapdebug = 0; 938 #endif 939 940 /* 941 * Good {morning,afternoon,evening,night}. 942 */ 943 printf(version); 944 identifycpu(); 945 format_bytes(pbuf, sizeof(pbuf), totalphysmem << PAGE_SHIFT); 946 printf("total memory = %s\n", pbuf); 947 format_bytes(pbuf, sizeof(pbuf), ptoa(resvmem)); 948 printf("(%s reserved for PROM, ", pbuf); 949 format_bytes(pbuf, sizeof(pbuf), ptoa(physmem)); 950 printf("%s used by NetBSD)\n", pbuf); 951 if (unusedmem) { 952 format_bytes(pbuf, sizeof(pbuf), ctob(unusedmem)); 953 printf("WARNING: unused memory = %s\n", pbuf); 954 } 955 if (unknownmem) { 956 format_bytes(pbuf, sizeof(pbuf), ctob(unknownmem)); 957 printf("WARNING: %s of memory with unknown purpose\n", pbuf); 958 } 959 960 /* 961 * Allocate virtual address space for file I/O buffers. 962 * Note they are different than the array of headers, 'buf', 963 * and usually occupy more virtual memory than physical. 964 */ 965 size = MAXBSIZE * nbuf; 966 if (uvm_map(kernel_map, (vaddr_t *) &buffers, round_page(size), 967 NULL, UVM_UNKNOWN_OFFSET, 968 UVM_MAPFLAG(UVM_PROT_NONE, UVM_PROT_NONE, UVM_INH_NONE, 969 UVM_ADV_NORMAL, 0)) != KERN_SUCCESS) 970 panic("startup: cannot allocate VM for buffers"); 971 base = bufpages / nbuf; 972 residual = bufpages % nbuf; 973 for (i = 0; i < nbuf; i++) { 974 vsize_t curbufsize; 975 vaddr_t curbuf; 976 struct vm_page *pg; 977 978 /* 979 * Each buffer has MAXBSIZE bytes of VM space allocated. Of 980 * that MAXBSIZE space, we allocate and map (base+1) pages 981 * for the first "residual" buffers, and then we allocate 982 * "base" pages for the rest. 983 */ 984 curbuf = (vaddr_t) buffers + (i * MAXBSIZE); 985 curbufsize = CLBYTES * ((i < residual) ? (base+1) : base); 986 987 while (curbufsize) { 988 pg = uvm_pagealloc(NULL, 0, NULL, 0); 989 if (pg == NULL) 990 panic("cpu_startup: not enough memory for " 991 "buffer cache"); 992 #if defined(PMAP_NEW) 993 pmap_kenter_pgs(curbuf, &pg, 1); 994 #else 995 pmap_enter(kernel_map->pmap, curbuf, 996 VM_PAGE_TO_PHYS(pg), VM_PROT_READ|VM_PROT_WRITE, 997 TRUE, VM_PROT_READ|VM_PROT_WRITE); 998 #endif 999 curbuf += PAGE_SIZE; 1000 curbufsize -= PAGE_SIZE; 1001 } 1002 } 1003 /* 1004 * Allocate a submap for exec arguments. This map effectively 1005 * limits the number of processes exec'ing at any time. 1006 */ 1007 exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 1008 16 * NCARGS, VM_MAP_PAGEABLE, FALSE, NULL); 1009 1010 /* 1011 * Allocate a submap for physio 1012 */ 1013 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 1014 VM_PHYS_SIZE, 0, FALSE, NULL); 1015 1016 /* 1017 * No need to allocate an mbuf cluster submap. Mbuf clusters 1018 * are allocated via the pool allocator, and we use K0SEG to 1019 * map those pages. 1020 */ 1021 1022 /* 1023 * Initialize callouts 1024 */ 1025 callfree = callout; 1026 for (i = 1; i < ncallout; i++) 1027 callout[i-1].c_next = &callout[i]; 1028 callout[i-1].c_next = NULL; 1029 1030 #if defined(DEBUG) 1031 pmapdebug = opmapdebug; 1032 #endif 1033 format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 1034 printf("avail memory = %s\n", pbuf); 1035 #if 0 1036 { 1037 extern u_long pmap_pages_stolen; 1038 1039 format_bytes(pbuf, sizeof(pbuf), pmap_pages_stolen * PAGE_SIZE); 1040 printf("stolen memory for VM structures = %s\n", pbuf); 1041 } 1042 #endif 1043 format_bytes(pbuf, sizeof(pbuf), bufpages * CLBYTES); 1044 printf("using %ld buffers containing %s of memory\n", (long)nbuf, pbuf); 1045 1046 /* 1047 * Set up buffers, so they can be used to read disk labels. 1048 */ 1049 bufinit(); 1050 1051 /* 1052 * Set up the HWPCB so that it's safe to configure secondary 1053 * CPUs. 1054 */ 1055 hwrpb_primary_init(); 1056 } 1057 1058 /* 1059 * Retrieve the platform name from the DSR. 1060 */ 1061 const char * 1062 alpha_dsr_sysname() 1063 { 1064 struct dsrdb *dsr; 1065 const char *sysname; 1066 1067 /* 1068 * DSR does not exist on early HWRPB versions. 1069 */ 1070 if (hwrpb->rpb_version < HWRPB_DSRDB_MINVERS) 1071 return (NULL); 1072 1073 dsr = (struct dsrdb *)(((caddr_t)hwrpb) + hwrpb->rpb_dsrdb_off); 1074 sysname = (const char *)((caddr_t)dsr + (dsr->dsr_sysname_off + 1075 sizeof(u_int64_t))); 1076 return (sysname); 1077 } 1078 1079 /* 1080 * Lookup the system specified system variation in the provided table, 1081 * returning the model string on match. 1082 */ 1083 const char * 1084 alpha_variation_name(variation, avtp) 1085 u_int64_t variation; 1086 const struct alpha_variation_table *avtp; 1087 { 1088 int i; 1089 1090 for (i = 0; avtp[i].avt_model != NULL; i++) 1091 if (avtp[i].avt_variation == variation) 1092 return (avtp[i].avt_model); 1093 return (NULL); 1094 } 1095 1096 /* 1097 * Generate a default platform name based for unknown system variations. 1098 */ 1099 const char * 1100 alpha_unknown_sysname() 1101 { 1102 static char s[128]; /* safe size */ 1103 1104 sprintf(s, "%s family, unknown model variation 0x%lx", 1105 platform.family, hwrpb->rpb_variation & SV_ST_MASK); 1106 return ((const char *)s); 1107 } 1108 1109 void 1110 identifycpu() 1111 { 1112 char *s; 1113 1114 /* 1115 * print out CPU identification information. 1116 */ 1117 printf("%s", cpu_model); 1118 for(s = cpu_model; *s; ++s) 1119 if(strncasecmp(s, "MHz", 3) == 0) 1120 goto skipMHz; 1121 printf(", %ldMHz", hwrpb->rpb_cc_freq / 1000000); 1122 skipMHz: 1123 printf("\n"); 1124 printf("%ld byte page size, %d processor%s.\n", 1125 hwrpb->rpb_page_size, ncpus, ncpus == 1 ? "" : "s"); 1126 #if 0 1127 /* this isn't defined for any systems that we run on? */ 1128 printf("serial number 0x%lx 0x%lx\n", 1129 ((long *)hwrpb->rpb_ssn)[0], ((long *)hwrpb->rpb_ssn)[1]); 1130 1131 /* and these aren't particularly useful! */ 1132 printf("variation: 0x%lx, revision 0x%lx\n", 1133 hwrpb->rpb_variation, *(long *)hwrpb->rpb_revision); 1134 #endif 1135 } 1136 1137 int waittime = -1; 1138 struct pcb dumppcb; 1139 1140 void 1141 cpu_reboot(howto, bootstr) 1142 int howto; 1143 char *bootstr; 1144 { 1145 extern int cold; 1146 #if defined(MULTIPROCESSOR) 1147 #if 0 /* XXX See below. */ 1148 u_long cpu_id; 1149 #endif 1150 #endif 1151 1152 #if defined(MULTIPROCESSOR) 1153 /* We must be running on the primary CPU. */ 1154 if (alpha_pal_whami() != hwrpb->rpb_primary_cpu_id) 1155 panic("cpu_reboot: not on primary CPU!"); 1156 #endif 1157 1158 /* If system is cold, just halt. */ 1159 if (cold) { 1160 howto |= RB_HALT; 1161 goto haltsys; 1162 } 1163 1164 /* If "always halt" was specified as a boot flag, obey. */ 1165 if ((boothowto & RB_HALT) != 0) 1166 howto |= RB_HALT; 1167 1168 boothowto = howto; 1169 if ((howto & RB_NOSYNC) == 0 && waittime < 0) { 1170 waittime = 0; 1171 vfs_shutdown(); 1172 /* 1173 * If we've been adjusting the clock, the todr 1174 * will be out of synch; adjust it now. 1175 */ 1176 resettodr(); 1177 } 1178 1179 /* Disable interrupts. */ 1180 splhigh(); 1181 1182 /* If rebooting and a dump is requested do it. */ 1183 #if 0 1184 if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP) 1185 #else 1186 if (howto & RB_DUMP) 1187 #endif 1188 dumpsys(); 1189 1190 haltsys: 1191 1192 /* run any shutdown hooks */ 1193 doshutdownhooks(); 1194 1195 #if defined(MULTIPROCESSOR) 1196 #if 0 /* XXX doesn't work when called from here?! */ 1197 /* Kill off any secondary CPUs. */ 1198 for (cpu_id = 0; cpu_id < hwrpb->rpb_pcs_cnt; cpu_id++) { 1199 if (cpu_id == hwrpb->rpb_primary_cpu_id || 1200 cpu_info[cpu_id].ci_softc == NULL) 1201 continue; 1202 cpu_halt_secondary(cpu_id); 1203 } 1204 #endif 1205 #endif 1206 1207 #ifdef BOOTKEY 1208 printf("hit any key to %s...\n", howto & RB_HALT ? "halt" : "reboot"); 1209 cnpollc(1); /* for proper keyboard command handling */ 1210 cngetc(); 1211 cnpollc(0); 1212 printf("\n"); 1213 #endif 1214 1215 /* Finally, powerdown/halt/reboot the system. */ 1216 if ((howto && RB_POWERDOWN) == RB_POWERDOWN && 1217 platform.powerdown != NULL) { 1218 (*platform.powerdown)(); 1219 printf("WARNING: powerdown failed!\n"); 1220 } 1221 printf("%s\n\n", howto & RB_HALT ? "halted." : "rebooting..."); 1222 prom_halt(howto & RB_HALT); 1223 /*NOTREACHED*/ 1224 } 1225 1226 /* 1227 * These variables are needed by /sbin/savecore 1228 */ 1229 u_long dumpmag = 0x8fca0101; /* magic number */ 1230 int dumpsize = 0; /* pages */ 1231 long dumplo = 0; /* blocks */ 1232 1233 /* 1234 * cpu_dumpsize: calculate size of machine-dependent kernel core dump headers. 1235 */ 1236 int 1237 cpu_dumpsize() 1238 { 1239 int size; 1240 1241 size = ALIGN(sizeof(kcore_seg_t)) + ALIGN(sizeof(cpu_kcore_hdr_t)) + 1242 ALIGN(mem_cluster_cnt * sizeof(phys_ram_seg_t)); 1243 if (roundup(size, dbtob(1)) != dbtob(1)) 1244 return -1; 1245 1246 return (1); 1247 } 1248 1249 /* 1250 * cpu_dump_mempagecnt: calculate size of RAM (in pages) to be dumped. 1251 */ 1252 u_long 1253 cpu_dump_mempagecnt() 1254 { 1255 u_long i, n; 1256 1257 n = 0; 1258 for (i = 0; i < mem_cluster_cnt; i++) 1259 n += atop(mem_clusters[i].size); 1260 return (n); 1261 } 1262 1263 /* 1264 * cpu_dump: dump machine-dependent kernel core dump headers. 1265 */ 1266 int 1267 cpu_dump() 1268 { 1269 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1270 char buf[dbtob(1)]; 1271 kcore_seg_t *segp; 1272 cpu_kcore_hdr_t *cpuhdrp; 1273 phys_ram_seg_t *memsegp; 1274 int i; 1275 1276 dump = bdevsw[major(dumpdev)].d_dump; 1277 1278 bzero(buf, sizeof buf); 1279 segp = (kcore_seg_t *)buf; 1280 cpuhdrp = (cpu_kcore_hdr_t *)&buf[ALIGN(sizeof(*segp))]; 1281 memsegp = (phys_ram_seg_t *)&buf[ ALIGN(sizeof(*segp)) + 1282 ALIGN(sizeof(*cpuhdrp))]; 1283 1284 /* 1285 * Generate a segment header. 1286 */ 1287 CORE_SETMAGIC(*segp, KCORE_MAGIC, MID_MACHINE, CORE_CPU); 1288 segp->c_size = dbtob(1) - ALIGN(sizeof(*segp)); 1289 1290 /* 1291 * Add the machine-dependent header info. 1292 */ 1293 cpuhdrp->lev1map_pa = ALPHA_K0SEG_TO_PHYS((vaddr_t)kernel_lev1map); 1294 cpuhdrp->page_size = PAGE_SIZE; 1295 cpuhdrp->nmemsegs = mem_cluster_cnt; 1296 1297 /* 1298 * Fill in the memory segment descriptors. 1299 */ 1300 for (i = 0; i < mem_cluster_cnt; i++) { 1301 memsegp[i].start = mem_clusters[i].start; 1302 memsegp[i].size = mem_clusters[i].size & ~PAGE_MASK; 1303 } 1304 1305 return (dump(dumpdev, dumplo, (caddr_t)buf, dbtob(1))); 1306 } 1307 1308 /* 1309 * This is called by main to set dumplo and dumpsize. 1310 * Dumps always skip the first CLBYTES of disk space 1311 * in case there might be a disk label stored there. 1312 * If there is extra space, put dump at the end to 1313 * reduce the chance that swapping trashes it. 1314 */ 1315 void 1316 cpu_dumpconf() 1317 { 1318 int nblks, dumpblks; /* size of dump area */ 1319 int maj; 1320 1321 if (dumpdev == NODEV) 1322 goto bad; 1323 maj = major(dumpdev); 1324 if (maj < 0 || maj >= nblkdev) 1325 panic("dumpconf: bad dumpdev=0x%x", dumpdev); 1326 if (bdevsw[maj].d_psize == NULL) 1327 goto bad; 1328 nblks = (*bdevsw[maj].d_psize)(dumpdev); 1329 if (nblks <= ctod(1)) 1330 goto bad; 1331 1332 dumpblks = cpu_dumpsize(); 1333 if (dumpblks < 0) 1334 goto bad; 1335 dumpblks += ctod(cpu_dump_mempagecnt()); 1336 1337 /* If dump won't fit (incl. room for possible label), punt. */ 1338 if (dumpblks > (nblks - ctod(1))) 1339 goto bad; 1340 1341 /* Put dump at end of partition */ 1342 dumplo = nblks - dumpblks; 1343 1344 /* dumpsize is in page units, and doesn't include headers. */ 1345 dumpsize = cpu_dump_mempagecnt(); 1346 return; 1347 1348 bad: 1349 dumpsize = 0; 1350 return; 1351 } 1352 1353 /* 1354 * Dump the kernel's image to the swap partition. 1355 */ 1356 #define BYTES_PER_DUMP NBPG 1357 1358 void 1359 dumpsys() 1360 { 1361 u_long totalbytesleft, bytes, i, n, memcl; 1362 u_long maddr; 1363 int psize; 1364 daddr_t blkno; 1365 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1366 int error; 1367 1368 /* Save registers. */ 1369 savectx(&dumppcb); 1370 1371 msgbufenabled = 0; /* don't record dump msgs in msgbuf */ 1372 if (dumpdev == NODEV) 1373 return; 1374 1375 /* 1376 * For dumps during autoconfiguration, 1377 * if dump device has already configured... 1378 */ 1379 if (dumpsize == 0) 1380 cpu_dumpconf(); 1381 if (dumplo <= 0) { 1382 printf("\ndump to dev %u,%u not possible\n", major(dumpdev), 1383 minor(dumpdev)); 1384 return; 1385 } 1386 printf("\ndumping to dev %u,%u offset %ld\n", major(dumpdev), 1387 minor(dumpdev), dumplo); 1388 1389 psize = (*bdevsw[major(dumpdev)].d_psize)(dumpdev); 1390 printf("dump "); 1391 if (psize == -1) { 1392 printf("area unavailable\n"); 1393 return; 1394 } 1395 1396 /* XXX should purge all outstanding keystrokes. */ 1397 1398 if ((error = cpu_dump()) != 0) 1399 goto err; 1400 1401 totalbytesleft = ptoa(cpu_dump_mempagecnt()); 1402 blkno = dumplo + cpu_dumpsize(); 1403 dump = bdevsw[major(dumpdev)].d_dump; 1404 error = 0; 1405 1406 for (memcl = 0; memcl < mem_cluster_cnt; memcl++) { 1407 maddr = mem_clusters[memcl].start; 1408 bytes = mem_clusters[memcl].size & ~PAGE_MASK; 1409 1410 for (i = 0; i < bytes; i += n, totalbytesleft -= n) { 1411 1412 /* Print out how many MBs we to go. */ 1413 if ((totalbytesleft % (1024*1024)) == 0) 1414 printf("%ld ", totalbytesleft / (1024 * 1024)); 1415 1416 /* Limit size for next transfer. */ 1417 n = bytes - i; 1418 if (n > BYTES_PER_DUMP) 1419 n = BYTES_PER_DUMP; 1420 1421 error = (*dump)(dumpdev, blkno, 1422 (caddr_t)ALPHA_PHYS_TO_K0SEG(maddr), n); 1423 if (error) 1424 goto err; 1425 maddr += n; 1426 blkno += btodb(n); /* XXX? */ 1427 1428 /* XXX should look for keystrokes, to cancel. */ 1429 } 1430 } 1431 1432 err: 1433 switch (error) { 1434 1435 case ENXIO: 1436 printf("device bad\n"); 1437 break; 1438 1439 case EFAULT: 1440 printf("device not ready\n"); 1441 break; 1442 1443 case EINVAL: 1444 printf("area improper\n"); 1445 break; 1446 1447 case EIO: 1448 printf("i/o error\n"); 1449 break; 1450 1451 case EINTR: 1452 printf("aborted from console\n"); 1453 break; 1454 1455 case 0: 1456 printf("succeeded\n"); 1457 break; 1458 1459 default: 1460 printf("error %d\n", error); 1461 break; 1462 } 1463 printf("\n\n"); 1464 delay(1000); 1465 } 1466 1467 void 1468 frametoreg(framep, regp) 1469 struct trapframe *framep; 1470 struct reg *regp; 1471 { 1472 1473 regp->r_regs[R_V0] = framep->tf_regs[FRAME_V0]; 1474 regp->r_regs[R_T0] = framep->tf_regs[FRAME_T0]; 1475 regp->r_regs[R_T1] = framep->tf_regs[FRAME_T1]; 1476 regp->r_regs[R_T2] = framep->tf_regs[FRAME_T2]; 1477 regp->r_regs[R_T3] = framep->tf_regs[FRAME_T3]; 1478 regp->r_regs[R_T4] = framep->tf_regs[FRAME_T4]; 1479 regp->r_regs[R_T5] = framep->tf_regs[FRAME_T5]; 1480 regp->r_regs[R_T6] = framep->tf_regs[FRAME_T6]; 1481 regp->r_regs[R_T7] = framep->tf_regs[FRAME_T7]; 1482 regp->r_regs[R_S0] = framep->tf_regs[FRAME_S0]; 1483 regp->r_regs[R_S1] = framep->tf_regs[FRAME_S1]; 1484 regp->r_regs[R_S2] = framep->tf_regs[FRAME_S2]; 1485 regp->r_regs[R_S3] = framep->tf_regs[FRAME_S3]; 1486 regp->r_regs[R_S4] = framep->tf_regs[FRAME_S4]; 1487 regp->r_regs[R_S5] = framep->tf_regs[FRAME_S5]; 1488 regp->r_regs[R_S6] = framep->tf_regs[FRAME_S6]; 1489 regp->r_regs[R_A0] = framep->tf_regs[FRAME_A0]; 1490 regp->r_regs[R_A1] = framep->tf_regs[FRAME_A1]; 1491 regp->r_regs[R_A2] = framep->tf_regs[FRAME_A2]; 1492 regp->r_regs[R_A3] = framep->tf_regs[FRAME_A3]; 1493 regp->r_regs[R_A4] = framep->tf_regs[FRAME_A4]; 1494 regp->r_regs[R_A5] = framep->tf_regs[FRAME_A5]; 1495 regp->r_regs[R_T8] = framep->tf_regs[FRAME_T8]; 1496 regp->r_regs[R_T9] = framep->tf_regs[FRAME_T9]; 1497 regp->r_regs[R_T10] = framep->tf_regs[FRAME_T10]; 1498 regp->r_regs[R_T11] = framep->tf_regs[FRAME_T11]; 1499 regp->r_regs[R_RA] = framep->tf_regs[FRAME_RA]; 1500 regp->r_regs[R_T12] = framep->tf_regs[FRAME_T12]; 1501 regp->r_regs[R_AT] = framep->tf_regs[FRAME_AT]; 1502 regp->r_regs[R_GP] = framep->tf_regs[FRAME_GP]; 1503 /* regp->r_regs[R_SP] = framep->tf_regs[FRAME_SP]; XXX */ 1504 regp->r_regs[R_ZERO] = 0; 1505 } 1506 1507 void 1508 regtoframe(regp, framep) 1509 struct reg *regp; 1510 struct trapframe *framep; 1511 { 1512 1513 framep->tf_regs[FRAME_V0] = regp->r_regs[R_V0]; 1514 framep->tf_regs[FRAME_T0] = regp->r_regs[R_T0]; 1515 framep->tf_regs[FRAME_T1] = regp->r_regs[R_T1]; 1516 framep->tf_regs[FRAME_T2] = regp->r_regs[R_T2]; 1517 framep->tf_regs[FRAME_T3] = regp->r_regs[R_T3]; 1518 framep->tf_regs[FRAME_T4] = regp->r_regs[R_T4]; 1519 framep->tf_regs[FRAME_T5] = regp->r_regs[R_T5]; 1520 framep->tf_regs[FRAME_T6] = regp->r_regs[R_T6]; 1521 framep->tf_regs[FRAME_T7] = regp->r_regs[R_T7]; 1522 framep->tf_regs[FRAME_S0] = regp->r_regs[R_S0]; 1523 framep->tf_regs[FRAME_S1] = regp->r_regs[R_S1]; 1524 framep->tf_regs[FRAME_S2] = regp->r_regs[R_S2]; 1525 framep->tf_regs[FRAME_S3] = regp->r_regs[R_S3]; 1526 framep->tf_regs[FRAME_S4] = regp->r_regs[R_S4]; 1527 framep->tf_regs[FRAME_S5] = regp->r_regs[R_S5]; 1528 framep->tf_regs[FRAME_S6] = regp->r_regs[R_S6]; 1529 framep->tf_regs[FRAME_A0] = regp->r_regs[R_A0]; 1530 framep->tf_regs[FRAME_A1] = regp->r_regs[R_A1]; 1531 framep->tf_regs[FRAME_A2] = regp->r_regs[R_A2]; 1532 framep->tf_regs[FRAME_A3] = regp->r_regs[R_A3]; 1533 framep->tf_regs[FRAME_A4] = regp->r_regs[R_A4]; 1534 framep->tf_regs[FRAME_A5] = regp->r_regs[R_A5]; 1535 framep->tf_regs[FRAME_T8] = regp->r_regs[R_T8]; 1536 framep->tf_regs[FRAME_T9] = regp->r_regs[R_T9]; 1537 framep->tf_regs[FRAME_T10] = regp->r_regs[R_T10]; 1538 framep->tf_regs[FRAME_T11] = regp->r_regs[R_T11]; 1539 framep->tf_regs[FRAME_RA] = regp->r_regs[R_RA]; 1540 framep->tf_regs[FRAME_T12] = regp->r_regs[R_T12]; 1541 framep->tf_regs[FRAME_AT] = regp->r_regs[R_AT]; 1542 framep->tf_regs[FRAME_GP] = regp->r_regs[R_GP]; 1543 /* framep->tf_regs[FRAME_SP] = regp->r_regs[R_SP]; XXX */ 1544 /* ??? = regp->r_regs[R_ZERO]; */ 1545 } 1546 1547 void 1548 printregs(regp) 1549 struct reg *regp; 1550 { 1551 int i; 1552 1553 for (i = 0; i < 32; i++) 1554 printf("R%d:\t0x%016lx%s", i, regp->r_regs[i], 1555 i & 1 ? "\n" : "\t"); 1556 } 1557 1558 void 1559 regdump(framep) 1560 struct trapframe *framep; 1561 { 1562 struct reg reg; 1563 1564 frametoreg(framep, ®); 1565 reg.r_regs[R_SP] = alpha_pal_rdusp(); 1566 1567 printf("REGISTERS:\n"); 1568 printregs(®); 1569 } 1570 1571 #ifdef DEBUG 1572 int sigdebug = 0; 1573 int sigpid = 0; 1574 #define SDB_FOLLOW 0x01 1575 #define SDB_KSTACK 0x02 1576 #endif 1577 1578 /* 1579 * Send an interrupt to process. 1580 */ 1581 void 1582 sendsig(catcher, sig, mask, code) 1583 sig_t catcher; 1584 int sig; 1585 sigset_t *mask; 1586 u_long code; 1587 { 1588 struct proc *p = curproc; 1589 struct sigcontext *scp, ksc; 1590 struct trapframe *frame; 1591 struct sigacts *psp = p->p_sigacts; 1592 int onstack, fsize, rndfsize; 1593 1594 frame = p->p_md.md_tf; 1595 1596 /* Do we need to jump onto the signal stack? */ 1597 onstack = 1598 (psp->ps_sigstk.ss_flags & (SS_DISABLE | SS_ONSTACK)) == 0 && 1599 (psp->ps_sigact[sig].sa_flags & SA_ONSTACK) != 0; 1600 1601 /* Allocate space for the signal handler context. */ 1602 fsize = sizeof(ksc); 1603 rndfsize = ((fsize + 15) / 16) * 16; 1604 1605 if (onstack) 1606 scp = (struct sigcontext *)((caddr_t)psp->ps_sigstk.ss_sp + 1607 psp->ps_sigstk.ss_size); 1608 else 1609 scp = (struct sigcontext *)(alpha_pal_rdusp()); 1610 scp = (struct sigcontext *)((caddr_t)scp - rndfsize); 1611 1612 #ifdef DEBUG 1613 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1614 printf("sendsig(%d): sig %d ssp %p usp %p\n", p->p_pid, 1615 sig, &onstack, scp); 1616 #endif 1617 1618 /* Build stack frame for signal trampoline. */ 1619 ksc.sc_pc = frame->tf_regs[FRAME_PC]; 1620 ksc.sc_ps = frame->tf_regs[FRAME_PS]; 1621 1622 /* Save register context. */ 1623 frametoreg(frame, (struct reg *)ksc.sc_regs); 1624 ksc.sc_regs[R_ZERO] = 0xACEDBADE; /* magic number */ 1625 ksc.sc_regs[R_SP] = alpha_pal_rdusp(); 1626 1627 /* save the floating-point state, if necessary, then copy it. */ 1628 if (p == fpcurproc) { 1629 alpha_pal_wrfen(1); 1630 savefpstate(&p->p_addr->u_pcb.pcb_fp); 1631 alpha_pal_wrfen(0); 1632 fpcurproc = NULL; 1633 } 1634 ksc.sc_ownedfp = p->p_md.md_flags & MDP_FPUSED; 1635 bcopy(&p->p_addr->u_pcb.pcb_fp, (struct fpreg *)ksc.sc_fpregs, 1636 sizeof(struct fpreg)); 1637 ksc.sc_fp_control = 0; /* XXX ? */ 1638 bzero(ksc.sc_reserved, sizeof ksc.sc_reserved); /* XXX */ 1639 bzero(ksc.sc_xxx, sizeof ksc.sc_xxx); /* XXX */ 1640 1641 /* Save signal stack. */ 1642 ksc.sc_onstack = psp->ps_sigstk.ss_flags & SS_ONSTACK; 1643 1644 /* Save signal mask. */ 1645 ksc.sc_mask = *mask; 1646 1647 #ifdef COMPAT_13 1648 /* 1649 * XXX We always have to save an old style signal mask because 1650 * XXX we might be delivering a signal to a process which will 1651 * XXX escape from the signal in a non-standard way and invoke 1652 * XXX sigreturn() directly. 1653 */ 1654 { 1655 /* Note: it's a long in the stack frame. */ 1656 sigset13_t mask13; 1657 1658 native_sigset_to_sigset13(mask, &mask13); 1659 ksc.__sc_mask13 = mask13; 1660 } 1661 #endif 1662 1663 #ifdef COMPAT_OSF1 1664 /* 1665 * XXX Create an OSF/1-style sigcontext and associated goo. 1666 */ 1667 #endif 1668 1669 if (copyout(&ksc, (caddr_t)scp, fsize) != 0) { 1670 /* 1671 * Process has trashed its stack; give it an illegal 1672 * instruction to halt it in its tracks. 1673 */ 1674 #ifdef DEBUG 1675 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1676 printf("sendsig(%d): copyout failed on sig %d\n", 1677 p->p_pid, sig); 1678 #endif 1679 sigexit(p, SIGILL); 1680 /* NOTREACHED */ 1681 } 1682 #ifdef DEBUG 1683 if (sigdebug & SDB_FOLLOW) 1684 printf("sendsig(%d): sig %d scp %p code %lx\n", p->p_pid, sig, 1685 scp, code); 1686 #endif 1687 1688 /* Set up the registers to return to sigcode. */ 1689 frame->tf_regs[FRAME_PC] = (u_int64_t)psp->ps_sigcode; 1690 frame->tf_regs[FRAME_A0] = sig; 1691 frame->tf_regs[FRAME_A1] = code; 1692 frame->tf_regs[FRAME_A2] = (u_int64_t)scp; 1693 frame->tf_regs[FRAME_T12] = (u_int64_t)catcher; /* t12 is pv */ 1694 alpha_pal_wrusp((unsigned long)scp); 1695 1696 /* Remember that we're now on the signal stack. */ 1697 if (onstack) 1698 psp->ps_sigstk.ss_flags |= SS_ONSTACK; 1699 1700 #ifdef DEBUG 1701 if (sigdebug & SDB_FOLLOW) 1702 printf("sendsig(%d): pc %lx, catcher %lx\n", p->p_pid, 1703 frame->tf_regs[FRAME_PC], frame->tf_regs[FRAME_A3]); 1704 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1705 printf("sendsig(%d): sig %d returns\n", 1706 p->p_pid, sig); 1707 #endif 1708 } 1709 1710 /* 1711 * System call to cleanup state after a signal 1712 * has been taken. Reset signal mask and 1713 * stack state from context left by sendsig (above). 1714 * Return to previous pc and psl as specified by 1715 * context left by sendsig. Check carefully to 1716 * make sure that the user has not modified the 1717 * psl to gain improper privileges or to cause 1718 * a machine fault. 1719 */ 1720 /* ARGSUSED */ 1721 int 1722 sys___sigreturn14(p, v, retval) 1723 struct proc *p; 1724 void *v; 1725 register_t *retval; 1726 { 1727 struct sys___sigreturn14_args /* { 1728 syscallarg(struct sigcontext *) sigcntxp; 1729 } */ *uap = v; 1730 struct sigcontext *scp, ksc; 1731 1732 /* 1733 * The trampoline code hands us the context. 1734 * It is unsafe to keep track of it ourselves, in the event that a 1735 * program jumps out of a signal handler. 1736 */ 1737 scp = SCARG(uap, sigcntxp); 1738 #ifdef DEBUG 1739 if (sigdebug & SDB_FOLLOW) 1740 printf("sigreturn: pid %d, scp %p\n", p->p_pid, scp); 1741 #endif 1742 if (ALIGN(scp) != (u_int64_t)scp) 1743 return (EINVAL); 1744 1745 if (copyin((caddr_t)scp, &ksc, sizeof(ksc)) != 0) 1746 return (EFAULT); 1747 1748 if (ksc.sc_regs[R_ZERO] != 0xACEDBADE) /* magic number */ 1749 return (EINVAL); 1750 1751 /* Restore register context. */ 1752 p->p_md.md_tf->tf_regs[FRAME_PC] = ksc.sc_pc; 1753 p->p_md.md_tf->tf_regs[FRAME_PS] = 1754 (ksc.sc_ps | ALPHA_PSL_USERSET) & ~ALPHA_PSL_USERCLR; 1755 1756 regtoframe((struct reg *)ksc.sc_regs, p->p_md.md_tf); 1757 alpha_pal_wrusp(ksc.sc_regs[R_SP]); 1758 1759 /* XXX ksc.sc_ownedfp ? */ 1760 if (p == fpcurproc) 1761 fpcurproc = NULL; 1762 bcopy((struct fpreg *)ksc.sc_fpregs, &p->p_addr->u_pcb.pcb_fp, 1763 sizeof(struct fpreg)); 1764 /* XXX ksc.sc_fp_control ? */ 1765 1766 /* Restore signal stack. */ 1767 if (ksc.sc_onstack & SS_ONSTACK) 1768 p->p_sigacts->ps_sigstk.ss_flags |= SS_ONSTACK; 1769 else 1770 p->p_sigacts->ps_sigstk.ss_flags &= ~SS_ONSTACK; 1771 1772 /* Restore signal mask. */ 1773 (void) sigprocmask1(p, SIG_SETMASK, &ksc.sc_mask, 0); 1774 1775 #ifdef DEBUG 1776 if (sigdebug & SDB_FOLLOW) 1777 printf("sigreturn(%d): returns\n", p->p_pid); 1778 #endif 1779 return (EJUSTRETURN); 1780 } 1781 1782 /* 1783 * machine dependent system variables. 1784 */ 1785 int 1786 cpu_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 1787 int *name; 1788 u_int namelen; 1789 void *oldp; 1790 size_t *oldlenp; 1791 void *newp; 1792 size_t newlen; 1793 struct proc *p; 1794 { 1795 dev_t consdev; 1796 1797 /* all sysctl names at this level are terminal */ 1798 if (namelen != 1) 1799 return (ENOTDIR); /* overloaded */ 1800 1801 switch (name[0]) { 1802 case CPU_CONSDEV: 1803 if (cn_tab != NULL) 1804 consdev = cn_tab->cn_dev; 1805 else 1806 consdev = NODEV; 1807 return (sysctl_rdstruct(oldp, oldlenp, newp, &consdev, 1808 sizeof consdev)); 1809 1810 case CPU_ROOT_DEVICE: 1811 return (sysctl_rdstring(oldp, oldlenp, newp, 1812 root_device->dv_xname)); 1813 1814 case CPU_UNALIGNED_PRINT: 1815 return (sysctl_int(oldp, oldlenp, newp, newlen, 1816 &alpha_unaligned_print)); 1817 1818 case CPU_UNALIGNED_FIX: 1819 return (sysctl_int(oldp, oldlenp, newp, newlen, 1820 &alpha_unaligned_fix)); 1821 1822 case CPU_UNALIGNED_SIGBUS: 1823 return (sysctl_int(oldp, oldlenp, newp, newlen, 1824 &alpha_unaligned_sigbus)); 1825 1826 case CPU_BOOTED_KERNEL: 1827 return (sysctl_rdstring(oldp, oldlenp, newp, 1828 bootinfo.booted_kernel)); 1829 1830 default: 1831 return (EOPNOTSUPP); 1832 } 1833 /* NOTREACHED */ 1834 } 1835 1836 /* 1837 * Set registers on exec. 1838 */ 1839 void 1840 setregs(p, pack, stack) 1841 register struct proc *p; 1842 struct exec_package *pack; 1843 u_long stack; 1844 { 1845 struct trapframe *tfp = p->p_md.md_tf; 1846 #ifdef DEBUG 1847 int i; 1848 #endif 1849 1850 #ifdef DEBUG 1851 /* 1852 * Crash and dump, if the user requested it. 1853 */ 1854 if (boothowto & RB_DUMP) 1855 panic("crash requested by boot flags"); 1856 #endif 1857 1858 #ifdef DEBUG 1859 for (i = 0; i < FRAME_SIZE; i++) 1860 tfp->tf_regs[i] = 0xbabefacedeadbeef; 1861 #else 1862 bzero(tfp->tf_regs, FRAME_SIZE * sizeof tfp->tf_regs[0]); 1863 #endif 1864 bzero(&p->p_addr->u_pcb.pcb_fp, sizeof p->p_addr->u_pcb.pcb_fp); 1865 p->p_addr->u_pcb.pcb_fp.fpr_cr = FPCR_INED 1866 | FPCR_UNFD 1867 | FPCR_UNDZ 1868 | FPCR_DYN(FP_RN) 1869 | FPCR_OVFD 1870 | FPCR_DZED 1871 | FPCR_INVD 1872 | FPCR_DNZ; 1873 alpha_pal_wrusp(stack); 1874 tfp->tf_regs[FRAME_PS] = ALPHA_PSL_USERSET; 1875 tfp->tf_regs[FRAME_PC] = pack->ep_entry & ~3; 1876 1877 tfp->tf_regs[FRAME_A0] = stack; /* a0 = sp */ 1878 tfp->tf_regs[FRAME_A1] = 0; /* a1 = rtld cleanup */ 1879 tfp->tf_regs[FRAME_A2] = 0; /* a2 = rtld object */ 1880 tfp->tf_regs[FRAME_A3] = (u_int64_t)PS_STRINGS; /* a3 = ps_strings */ 1881 tfp->tf_regs[FRAME_T12] = tfp->tf_regs[FRAME_PC]; /* a.k.a. PV */ 1882 1883 p->p_md.md_flags &= ~MDP_FPUSED; 1884 if (fpcurproc == p) 1885 fpcurproc = NULL; 1886 } 1887 1888 void 1889 netintr() 1890 { 1891 int n, s; 1892 1893 s = splhigh(); 1894 n = netisr; 1895 netisr = 0; 1896 splx(s); 1897 1898 #define DONETISR(bit, fn) \ 1899 do { \ 1900 if (n & (1 << (bit))) \ 1901 fn; \ 1902 } while (0) 1903 1904 #ifdef INET 1905 #if NARP > 0 1906 DONETISR(NETISR_ARP, arpintr()); 1907 #endif 1908 DONETISR(NETISR_IP, ipintr()); 1909 #endif 1910 #ifdef INET6 1911 DONETISR(NETISR_IPV6, ip6intr()); 1912 #endif 1913 #ifdef NETATALK 1914 DONETISR(NETISR_ATALK, atintr()); 1915 #endif 1916 #ifdef NS 1917 DONETISR(NETISR_NS, nsintr()); 1918 #endif 1919 #ifdef ISO 1920 DONETISR(NETISR_ISO, clnlintr()); 1921 #endif 1922 #ifdef CCITT 1923 DONETISR(NETISR_CCITT, ccittintr()); 1924 #endif 1925 #ifdef NATM 1926 DONETISR(NETISR_NATM, natmintr()); 1927 #endif 1928 #if NPPP > 1 1929 DONETISR(NETISR_PPP, pppintr()); 1930 #endif 1931 1932 #undef DONETISR 1933 } 1934 1935 void 1936 do_sir() 1937 { 1938 u_int64_t n; 1939 1940 while ((n = alpha_atomic_loadlatch_q(&ssir, 0)) != 0) { 1941 #define COUNT_SOFT uvmexp.softs++ 1942 1943 #define DO_SIR(bit, fn) \ 1944 do { \ 1945 if (n & (bit)) { \ 1946 COUNT_SOFT; \ 1947 fn; \ 1948 } \ 1949 } while (0) 1950 1951 DO_SIR(SIR_NET, netintr()); 1952 DO_SIR(SIR_CLOCK, softclock()); 1953 #if NCOM > 0 1954 DO_SIR(SIR_SERIAL, comsoft()); 1955 #endif 1956 1957 #undef COUNT_SOFT 1958 #undef DO_SIR 1959 } 1960 } 1961 1962 int 1963 spl0() 1964 { 1965 1966 if (ssir) { 1967 (void) alpha_pal_swpipl(ALPHA_PSL_IPL_SOFT); 1968 do_sir(); 1969 } 1970 1971 return (alpha_pal_swpipl(ALPHA_PSL_IPL_0)); 1972 } 1973 1974 /* 1975 * The following primitives manipulate the run queues. _whichqs tells which 1976 * of the 32 queues _qs have processes in them. Setrunqueue puts processes 1977 * into queues, Remrunqueue removes them from queues. The running process is 1978 * on no queue, other processes are on a queue related to p->p_priority, 1979 * divided by 4 actually to shrink the 0-127 range of priorities into the 32 1980 * available queues. 1981 */ 1982 /* 1983 * setrunqueue(p) 1984 * proc *p; 1985 * 1986 * Call should be made at splclock(), and p->p_stat should be SRUN. 1987 */ 1988 1989 void 1990 setrunqueue(p) 1991 struct proc *p; 1992 { 1993 int bit; 1994 1995 /* firewall: p->p_back must be NULL */ 1996 if (p->p_back != NULL) 1997 panic("setrunqueue"); 1998 1999 bit = p->p_priority >> 2; 2000 whichqs |= (1 << bit); 2001 p->p_forw = (struct proc *)&qs[bit]; 2002 p->p_back = qs[bit].ph_rlink; 2003 p->p_back->p_forw = p; 2004 qs[bit].ph_rlink = p; 2005 } 2006 2007 /* 2008 * remrunqueue(p) 2009 * 2010 * Call should be made at splclock(). 2011 */ 2012 void 2013 remrunqueue(p) 2014 struct proc *p; 2015 { 2016 int bit; 2017 2018 bit = p->p_priority >> 2; 2019 if ((whichqs & (1 << bit)) == 0) 2020 panic("remrunqueue"); 2021 2022 p->p_back->p_forw = p->p_forw; 2023 p->p_forw->p_back = p->p_back; 2024 p->p_back = NULL; /* for firewall checking. */ 2025 2026 if ((struct proc *)&qs[bit] == qs[bit].ph_link) 2027 whichqs &= ~(1 << bit); 2028 } 2029 2030 /* 2031 * Return the best possible estimate of the time in the timeval 2032 * to which tvp points. Unfortunately, we can't read the hardware registers. 2033 * We guarantee that the time will be greater than the value obtained by a 2034 * previous call. 2035 */ 2036 void 2037 microtime(tvp) 2038 register struct timeval *tvp; 2039 { 2040 int s = splclock(); 2041 static struct timeval lasttime; 2042 2043 *tvp = time; 2044 #ifdef notdef 2045 tvp->tv_usec += clkread(); 2046 while (tvp->tv_usec > 1000000) { 2047 tvp->tv_sec++; 2048 tvp->tv_usec -= 1000000; 2049 } 2050 #endif 2051 if (tvp->tv_sec == lasttime.tv_sec && 2052 tvp->tv_usec <= lasttime.tv_usec && 2053 (tvp->tv_usec = lasttime.tv_usec + 1) > 1000000) { 2054 tvp->tv_sec++; 2055 tvp->tv_usec -= 1000000; 2056 } 2057 lasttime = *tvp; 2058 splx(s); 2059 } 2060 2061 /* 2062 * Wait "n" microseconds. 2063 */ 2064 void 2065 delay(n) 2066 unsigned long n; 2067 { 2068 long N = cycles_per_usec * (n); 2069 2070 while (N > 0) /* XXX */ 2071 N -= 3; /* XXX */ 2072 } 2073 2074 #if defined(COMPAT_OSF1) || 1 /* XXX */ 2075 void cpu_exec_ecoff_setregs __P((struct proc *, struct exec_package *, 2076 u_long)); 2077 2078 void 2079 cpu_exec_ecoff_setregs(p, epp, stack) 2080 struct proc *p; 2081 struct exec_package *epp; 2082 u_long stack; 2083 { 2084 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2085 2086 setregs(p, epp, stack); 2087 p->p_md.md_tf->tf_regs[FRAME_GP] = execp->a.gp_value; 2088 } 2089 2090 /* 2091 * cpu_exec_ecoff_hook(): 2092 * cpu-dependent ECOFF format hook for execve(). 2093 * 2094 * Do any machine-dependent diddling of the exec package when doing ECOFF. 2095 * 2096 */ 2097 int 2098 cpu_exec_ecoff_hook(p, epp) 2099 struct proc *p; 2100 struct exec_package *epp; 2101 { 2102 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2103 extern struct emul emul_netbsd; 2104 int error; 2105 extern int osf1_exec_ecoff_hook(struct proc *p, 2106 struct exec_package *epp); 2107 2108 switch (execp->f.f_magic) { 2109 #ifdef COMPAT_OSF1 2110 case ECOFF_MAGIC_ALPHA: 2111 error = osf1_exec_ecoff_hook(p, epp); 2112 break; 2113 #endif 2114 2115 case ECOFF_MAGIC_NETBSD_ALPHA: 2116 epp->ep_emul = &emul_netbsd; 2117 error = 0; 2118 break; 2119 2120 default: 2121 error = ENOEXEC; 2122 } 2123 return (error); 2124 } 2125 #endif 2126 2127 int 2128 alpha_pa_access(pa) 2129 u_long pa; 2130 { 2131 int i; 2132 2133 for (i = 0; i < mem_cluster_cnt; i++) { 2134 if (pa < mem_clusters[i].start) 2135 continue; 2136 if ((pa - mem_clusters[i].start) >= 2137 (mem_clusters[i].size & ~PAGE_MASK)) 2138 continue; 2139 return (mem_clusters[i].size & PAGE_MASK); /* prot */ 2140 } 2141 return (PROT_NONE); 2142 } 2143 2144 /* XXX XXX BEGIN XXX XXX */ 2145 paddr_t alpha_XXX_dmamap_or; /* XXX */ 2146 /* XXX */ 2147 paddr_t /* XXX */ 2148 alpha_XXX_dmamap(v) /* XXX */ 2149 vaddr_t v; /* XXX */ 2150 { /* XXX */ 2151 /* XXX */ 2152 return (vtophys(v) | alpha_XXX_dmamap_or); /* XXX */ 2153 } /* XXX */ 2154 /* XXX XXX END XXX XXX */ 2155 2156 struct mchkinfo * 2157 cpu_mchkinfo() 2158 { 2159 if (mchkinfo_all_cpus == NULL) 2160 return &startup_info; 2161 return mchkinfo_all_cpus + alpha_pal_whami(); 2162 } 2163 2164 char * 2165 dot_conv(x) 2166 unsigned long x; 2167 { 2168 int i; 2169 char *xc; 2170 static int next; 2171 static char space[2][20]; 2172 2173 xc = space[next ^= 1] + sizeof space[0]; 2174 *--xc = '\0'; 2175 for (i = 0;; ++i) { 2176 if (i && (i & 3) == 0) 2177 *--xc = '.'; 2178 *--xc = "0123456789abcdef"[x & 0xf]; 2179 x >>= 4; 2180 if (x == 0) 2181 break; 2182 } 2183 return xc; 2184 } 2185
Indexes created Thu Oct 02 07:10:07 GMT 2025