machdep.c revision 1.178
1 /* $NetBSD: machdep.c,v 1.178 1999/08/10 18:53:03 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center and by Chris G. Demetriou. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /* 41 * Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University. 42 * All rights reserved. 43 * 44 * Author: Chris G. Demetriou 45 * 46 * Permission to use, copy, modify and distribute this software and 47 * its documentation is hereby granted, provided that both the copyright 48 * notice and this permission notice appear in all copies of the 49 * software, derivative works or modified versions, and any portions 50 * thereof, and that both notices appear in supporting documentation. 51 * 52 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 53 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 54 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 55 * 56 * Carnegie Mellon requests users of this software to return to 57 * 58 * Software Distribution Coordinator or Software.Distribution (at) CS.CMU.EDU 59 * School of Computer Science 60 * Carnegie Mellon University 61 * Pittsburgh PA 15213-3890 62 * 63 * any improvements or extensions that they make and grant Carnegie the 64 * rights to redistribute these changes. 65 */ 66 67 #include "opt_ddb.h" 68 #include "opt_multiprocessor.h" 69 #include "opt_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 1.178 1999/08/10 18:53:03 thorpej 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 <alpha/alpha/cpuvar.h> 129 130 #include <net/netisr.h> 131 #include <net/if.h> 132 133 #ifdef INET 134 #include <net/route.h> 135 #include <netinet/in.h> 136 #include <netinet/ip_var.h> 137 #include "arp.h" 138 #if NARP > 0 139 #include <netinet/if_inarp.h> 140 #endif 141 #endif 142 #ifdef INET6 143 # ifndef INET 144 # include <netinet/in.h> 145 # endif 146 #include <netinet6/ip6.h> 147 #include <netinet6/ip6_var.h> 148 #endif 149 #ifdef NS 150 #include <netns/ns_var.h> 151 #endif 152 #ifdef ISO 153 #include <netiso/iso.h> 154 #include <netiso/clnp.h> 155 #endif 156 #ifdef CCITT 157 #include <netccitt/x25.h> 158 #include <netccitt/pk.h> 159 #include <netccitt/pk_extern.h> 160 #endif 161 #ifdef NATM 162 #include <netnatm/natm.h> 163 #endif 164 #ifdef NETATALK 165 #include <netatalk/at_extern.h> 166 #endif 167 #include "ppp.h" 168 #if NPPP > 0 169 #include <net/ppp_defs.h> 170 #include <net/if_ppp.h> 171 #endif 172 173 #ifdef DDB 174 #include <machine/db_machdep.h> 175 #include <ddb/db_access.h> 176 #include <ddb/db_sym.h> 177 #include <ddb/db_extern.h> 178 #include <ddb/db_interface.h> 179 #endif 180 181 #include <machine/alpha.h> 182 #include <machine/intrcnt.h> 183 184 #include "com.h" 185 #if NCOM > 0 186 extern void comsoft __P((void)); 187 #endif 188 189 vm_map_t exec_map = NULL; 190 vm_map_t mb_map = NULL; 191 vm_map_t phys_map = NULL; 192 193 caddr_t msgbufaddr; 194 195 int maxmem; /* max memory per process */ 196 197 int totalphysmem; /* total amount of physical memory in system */ 198 int physmem; /* physical memory used by NetBSD + some rsvd */ 199 int resvmem; /* amount of memory reserved for PROM */ 200 int unusedmem; /* amount of memory for OS that we don't use */ 201 int unknownmem; /* amount of memory with an unknown use */ 202 203 int cputype; /* system type, from the RPB */ 204 205 /* 206 * XXX We need an address to which we can assign things so that they 207 * won't be optimized away because we didn't use the value. 208 */ 209 u_int32_t no_optimize; 210 211 /* the following is used externally (sysctl_hw) */ 212 char machine[] = MACHINE; /* from <machine/param.h> */ 213 char machine_arch[] = MACHINE_ARCH; /* from <machine/param.h> */ 214 char cpu_model[128]; 215 216 struct user *proc0paddr; 217 218 /* Number of machine cycles per microsecond */ 219 u_int64_t cycles_per_usec; 220 221 /* number of cpus in the box. really! */ 222 int ncpus; 223 224 /* machine check info array, valloc()'ed in mdallocsys() */ 225 226 static struct mchkinfo startup_info, 227 *mchkinfo_all_cpus; 228 229 struct bootinfo_kernel bootinfo; 230 231 /* For built-in TCDS */ 232 #if defined(DEC_3000_300) || defined(DEC_3000_500) 233 u_int8_t dec_3000_scsiid[2], dec_3000_scsifast[2]; 234 #endif 235 236 struct platform platform; 237 238 u_int32_t vm_kmem_size = _VM_KMEM_SIZE; 239 u_int32_t vm_phys_size = _VM_PHYS_SIZE; 240 241 #ifdef DDB 242 /* start and end of kernel symbol table */ 243 void *ksym_start, *ksym_end; 244 #endif 245 246 /* for cpu_sysctl() */ 247 int alpha_unaligned_print = 1; /* warn about unaligned accesses */ 248 int alpha_unaligned_fix = 1; /* fix up unaligned accesses */ 249 int alpha_unaligned_sigbus = 0; /* don't SIGBUS on fixed-up accesses */ 250 251 /* 252 * XXX This should be dynamically sized, but we have the chicken-egg problem! 253 * XXX it should also be larger than it is, because not all of the mddt 254 * XXX clusters end up being used for VM. 255 */ 256 phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX]; /* low size bits overloaded */ 257 int mem_cluster_cnt; 258 259 int cpu_dump __P((void)); 260 int cpu_dumpsize __P((void)); 261 u_long cpu_dump_mempagecnt __P((void)); 262 void dumpsys __P((void)); 263 void identifycpu __P((void)); 264 caddr_t mdallocsys __P((caddr_t)); 265 void netintr __P((void)); 266 void printregs __P((struct reg *)); 267 268 void 269 alpha_init(pfn, ptb, bim, bip, biv) 270 u_long pfn; /* first free PFN number */ 271 u_long ptb; /* PFN of current level 1 page table */ 272 u_long bim; /* bootinfo magic */ 273 u_long bip; /* bootinfo pointer */ 274 u_long biv; /* bootinfo version */ 275 { 276 extern char kernel_text[], _end[]; 277 struct mddt *mddtp; 278 struct mddt_cluster *memc; 279 int i, mddtweird; 280 struct vm_physseg *vps; 281 vaddr_t kernstart, kernend; 282 paddr_t kernstartpfn, kernendpfn, pfn0, pfn1; 283 vsize_t size; 284 char *p; 285 caddr_t v; 286 char *bootinfo_msg; 287 288 /* NO OUTPUT ALLOWED UNTIL FURTHER NOTICE */ 289 290 /* 291 * Turn off interrupts (not mchecks) and floating point. 292 * Make sure the instruction and data streams are consistent. 293 */ 294 (void)alpha_pal_swpipl(ALPHA_PSL_IPL_HIGH); 295 alpha_pal_wrfen(0); 296 ALPHA_TBIA(); 297 alpha_pal_imb(); 298 299 /* 300 * Get critical system information (if possible, from the 301 * information provided by the boot program). 302 */ 303 bootinfo_msg = NULL; 304 if (bim == BOOTINFO_MAGIC) { 305 if (biv == 0) { /* backward compat */ 306 biv = *(u_long *)bip; 307 bip += 8; 308 } 309 switch (biv) { 310 case 1: { 311 struct bootinfo_v1 *v1p = (struct bootinfo_v1 *)bip; 312 313 bootinfo.ssym = v1p->ssym; 314 bootinfo.esym = v1p->esym; 315 /* hwrpb may not be provided by boot block in v1 */ 316 if (v1p->hwrpb != NULL) { 317 bootinfo.hwrpb_phys = 318 ((struct rpb *)v1p->hwrpb)->rpb_phys; 319 bootinfo.hwrpb_size = v1p->hwrpbsize; 320 } else { 321 bootinfo.hwrpb_phys = 322 ((struct rpb *)HWRPB_ADDR)->rpb_phys; 323 bootinfo.hwrpb_size = 324 ((struct rpb *)HWRPB_ADDR)->rpb_size; 325 } 326 bcopy(v1p->boot_flags, bootinfo.boot_flags, 327 min(sizeof v1p->boot_flags, 328 sizeof bootinfo.boot_flags)); 329 bcopy(v1p->booted_kernel, bootinfo.booted_kernel, 330 min(sizeof v1p->booted_kernel, 331 sizeof bootinfo.booted_kernel)); 332 /* booted dev not provided in bootinfo */ 333 init_prom_interface((struct rpb *) 334 ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys)); 335 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 336 sizeof bootinfo.booted_dev); 337 break; 338 } 339 default: 340 bootinfo_msg = "unknown bootinfo version"; 341 goto nobootinfo; 342 } 343 } else { 344 bootinfo_msg = "boot program did not pass bootinfo"; 345 nobootinfo: 346 bootinfo.ssym = (u_long)_end; 347 bootinfo.esym = (u_long)_end; 348 bootinfo.hwrpb_phys = ((struct rpb *)HWRPB_ADDR)->rpb_phys; 349 bootinfo.hwrpb_size = ((struct rpb *)HWRPB_ADDR)->rpb_size; 350 init_prom_interface((struct rpb *)HWRPB_ADDR); 351 prom_getenv(PROM_E_BOOTED_OSFLAGS, bootinfo.boot_flags, 352 sizeof bootinfo.boot_flags); 353 prom_getenv(PROM_E_BOOTED_FILE, bootinfo.booted_kernel, 354 sizeof bootinfo.booted_kernel); 355 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 356 sizeof bootinfo.booted_dev); 357 } 358 359 /* 360 * Initialize the kernel's mapping of the RPB. It's needed for 361 * lots of things. 362 */ 363 hwrpb = (struct rpb *)ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys); 364 365 #if defined(DEC_3000_300) || defined(DEC_3000_500) 366 if (hwrpb->rpb_type == ST_DEC_3000_300 || 367 hwrpb->rpb_type == ST_DEC_3000_500) { 368 prom_getenv(PROM_E_SCSIID, dec_3000_scsiid, 369 sizeof(dec_3000_scsiid)); 370 prom_getenv(PROM_E_SCSIFAST, dec_3000_scsifast, 371 sizeof(dec_3000_scsifast)); 372 } 373 #endif 374 375 /* 376 * Remember how many cycles there are per microsecond, 377 * so that we can use delay(). Round up, for safety. 378 */ 379 cycles_per_usec = (hwrpb->rpb_cc_freq + 999999) / 1000000; 380 381 /* 382 * Initalize the (temporary) bootstrap console interface, so 383 * we can use printf until the VM system starts being setup. 384 * The real console is initialized before then. 385 */ 386 init_bootstrap_console(); 387 388 /* OUTPUT NOW ALLOWED */ 389 390 /* delayed from above */ 391 if (bootinfo_msg) 392 printf("WARNING: %s (0x%lx, 0x%lx, 0x%lx)\n", 393 bootinfo_msg, bim, bip, biv); 394 395 /* Initialize the trap vectors on the primary processor. */ 396 trap_init(); 397 398 /* 399 * Find out what hardware we're on, and do basic initialization. 400 */ 401 cputype = hwrpb->rpb_type; 402 if (cputype < 0) { 403 /* 404 * At least some white-box systems have SRM which 405 * reports a systype that's the negative of their 406 * blue-box counterpart. 407 */ 408 cputype = -cputype; 409 } 410 if (cputype >= ncpuinit) { 411 platform_not_supported(); 412 /* NOTREACHED */ 413 } 414 (*cpuinit[cputype].init)(); 415 strcpy(cpu_model, platform.model); 416 417 /* 418 * Initalize the real console, so the the bootstrap console is 419 * no longer necessary. 420 */ 421 (*platform.cons_init)(); 422 423 #ifdef DIAGNOSTIC 424 /* Paranoid sanity checking */ 425 426 /* We should always be running on the the primary. */ 427 assert(hwrpb->rpb_primary_cpu_id == alpha_pal_whami()); 428 429 /* 430 * On single-CPU systypes, the primary should always be CPU 0, 431 * except on Alpha 8200 systems where the CPU id is related 432 * to the VID, which is related to the Turbo Laser node id. 433 */ 434 if (cputype != ST_DEC_21000) 435 assert(hwrpb->rpb_primary_cpu_id == 0); 436 #endif 437 438 /* NO MORE FIRMWARE ACCESS ALLOWED */ 439 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 440 /* 441 * XXX (unless _PMAP_MAY_USE_PROM_CONSOLE is defined and 442 * XXX pmap_uses_prom_console() evaluates to non-zero.) 443 */ 444 #endif 445 446 /* 447 * find out this system's page size 448 */ 449 PAGE_SIZE = hwrpb->rpb_page_size; 450 if (PAGE_SIZE != 8192) 451 panic("page size %d != 8192?!", PAGE_SIZE); 452 453 /* 454 * Initialize PAGE_SIZE-dependent variables. 455 */ 456 uvm_setpagesize(); 457 458 /* 459 * Find the beginning and end of the kernel (and leave a 460 * bit of space before the beginning for the bootstrap 461 * stack). 462 */ 463 kernstart = trunc_page(kernel_text) - 2 * PAGE_SIZE; 464 #ifdef DDB 465 ksym_start = (void *)bootinfo.ssym; 466 ksym_end = (void *)bootinfo.esym; 467 kernend = (vaddr_t)round_page(ksym_end); 468 #else 469 kernend = (vaddr_t)round_page(_end); 470 #endif 471 472 kernstartpfn = atop(ALPHA_K0SEG_TO_PHYS(kernstart)); 473 kernendpfn = atop(ALPHA_K0SEG_TO_PHYS(kernend)); 474 475 /* 476 * Find out how much memory is available, by looking at 477 * the memory cluster descriptors. This also tries to do 478 * its best to detect things things that have never been seen 479 * before... 480 */ 481 mddtp = (struct mddt *)(((caddr_t)hwrpb) + hwrpb->rpb_memdat_off); 482 483 /* MDDT SANITY CHECKING */ 484 mddtweird = 0; 485 if (mddtp->mddt_cluster_cnt < 2) { 486 mddtweird = 1; 487 printf("WARNING: weird number of mem clusters: %lu\n", 488 mddtp->mddt_cluster_cnt); 489 } 490 491 #if 0 492 printf("Memory cluster count: %d\n", mddtp->mddt_cluster_cnt); 493 #endif 494 495 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 496 memc = &mddtp->mddt_clusters[i]; 497 #if 0 498 printf("MEMC %d: pfn 0x%lx cnt 0x%lx usage 0x%lx\n", i, 499 memc->mddt_pfn, memc->mddt_pg_cnt, memc->mddt_usage); 500 #endif 501 totalphysmem += memc->mddt_pg_cnt; 502 if (mem_cluster_cnt < VM_PHYSSEG_MAX) { /* XXX */ 503 mem_clusters[mem_cluster_cnt].start = 504 ptoa(memc->mddt_pfn); 505 mem_clusters[mem_cluster_cnt].size = 506 ptoa(memc->mddt_pg_cnt); 507 if (memc->mddt_usage & MDDT_mbz || 508 memc->mddt_usage & MDDT_NONVOLATILE || /* XXX */ 509 memc->mddt_usage & MDDT_PALCODE) 510 mem_clusters[mem_cluster_cnt].size |= 511 PROT_READ; 512 else 513 mem_clusters[mem_cluster_cnt].size |= 514 PROT_READ | PROT_WRITE | PROT_EXEC; 515 mem_cluster_cnt++; 516 } 517 518 if (memc->mddt_usage & MDDT_mbz) { 519 mddtweird = 1; 520 printf("WARNING: mem cluster %d has weird " 521 "usage 0x%lx\n", i, memc->mddt_usage); 522 unknownmem += memc->mddt_pg_cnt; 523 continue; 524 } 525 if (memc->mddt_usage & MDDT_NONVOLATILE) { 526 /* XXX should handle these... */ 527 printf("WARNING: skipping non-volatile mem " 528 "cluster %d\n", i); 529 unusedmem += memc->mddt_pg_cnt; 530 continue; 531 } 532 if (memc->mddt_usage & MDDT_PALCODE) { 533 resvmem += memc->mddt_pg_cnt; 534 continue; 535 } 536 537 /* 538 * We have a memory cluster available for system 539 * software use. We must determine if this cluster 540 * holds the kernel. 541 */ 542 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 543 /* 544 * XXX If the kernel uses the PROM console, we only use the 545 * XXX memory after the kernel in the first system segment, 546 * XXX to avoid clobbering prom mapping, data, etc. 547 */ 548 if (!pmap_uses_prom_console() || physmem == 0) { 549 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 550 physmem += memc->mddt_pg_cnt; 551 pfn0 = memc->mddt_pfn; 552 pfn1 = memc->mddt_pfn + memc->mddt_pg_cnt; 553 if (pfn0 <= kernstartpfn && kernendpfn <= pfn1) { 554 /* 555 * Must compute the location of the kernel 556 * within the segment. 557 */ 558 #if 0 559 printf("Cluster %d contains kernel\n", i); 560 #endif 561 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 562 if (!pmap_uses_prom_console()) { 563 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 564 if (pfn0 < kernstartpfn) { 565 /* 566 * There is a chunk before the kernel. 567 */ 568 #if 0 569 printf("Loading chunk before kernel: " 570 "0x%lx / 0x%lx\n", pfn0, kernstartpfn); 571 #endif 572 uvm_page_physload(pfn0, kernstartpfn, 573 pfn0, kernstartpfn, VM_FREELIST_DEFAULT); 574 } 575 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 576 } 577 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 578 if (kernendpfn < pfn1) { 579 /* 580 * There is a chunk after the kernel. 581 */ 582 #if 0 583 printf("Loading chunk after kernel: " 584 "0x%lx / 0x%lx\n", kernendpfn, pfn1); 585 #endif 586 uvm_page_physload(kernendpfn, pfn1, 587 kernendpfn, pfn1, VM_FREELIST_DEFAULT); 588 } 589 } else { 590 /* 591 * Just load this cluster as one chunk. 592 */ 593 #if 0 594 printf("Loading cluster %d: 0x%lx / 0x%lx\n", i, 595 pfn0, pfn1); 596 #endif 597 uvm_page_physload(pfn0, pfn1, pfn0, pfn1, 598 VM_FREELIST_DEFAULT); 599 } 600 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 601 } 602 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 603 } 604 605 /* 606 * Dump out the MDDT if it looks odd... 607 */ 608 if (mddtweird) { 609 printf("\n"); 610 printf("complete memory cluster information:\n"); 611 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 612 printf("mddt %d:\n", i); 613 printf("\tpfn %lx\n", 614 mddtp->mddt_clusters[i].mddt_pfn); 615 printf("\tcnt %lx\n", 616 mddtp->mddt_clusters[i].mddt_pg_cnt); 617 printf("\ttest %lx\n", 618 mddtp->mddt_clusters[i].mddt_pg_test); 619 printf("\tbva %lx\n", 620 mddtp->mddt_clusters[i].mddt_v_bitaddr); 621 printf("\tbpa %lx\n", 622 mddtp->mddt_clusters[i].mddt_p_bitaddr); 623 printf("\tbcksum %lx\n", 624 mddtp->mddt_clusters[i].mddt_bit_cksum); 625 printf("\tusage %lx\n", 626 mddtp->mddt_clusters[i].mddt_usage); 627 } 628 printf("\n"); 629 } 630 631 if (totalphysmem == 0) 632 panic("can't happen: system seems to have no memory!"); 633 634 #ifdef LIMITMEM 635 /* 636 * XXX Kludge so we can run on machines with memory larger 637 * XXX than 1G until all device drivers are converted to 638 * XXX use bus_dma. (Relies on the fact that vm_physmem 639 * XXX sorted in order of increasing addresses.) 640 */ 641 if (vm_physmem[vm_nphysseg - 1].end > atop(LIMITMEM * 1024 * 1024)) { 642 643 printf("******** LIMITING MEMORY TO %dMB **********\n", 644 LIMITMEM); 645 646 do { 647 u_long ovf; 648 649 vps = &vm_physmem[vm_nphysseg - 1]; 650 651 if (vps->start >= atop(LIMITMEM * 1024 * 1024)) { 652 /* 653 * If the start is too high, just drop 654 * the whole segment. 655 * 656 * XXX can start != avail_start in this 657 * XXX case? wouldn't that mean that 658 * XXX some memory was stolen above the 659 * XXX limit? What to do? 660 */ 661 ovf = vps->end - vps->start; 662 vm_nphysseg--; 663 } else { 664 /* 665 * If the start is OK, calculate how much 666 * to drop and drop it. 667 */ 668 ovf = vps->end - atop(LIMITMEM * 1024 * 1024); 669 vps->end -= ovf; 670 vps->avail_end -= ovf; 671 } 672 physmem -= ovf; 673 unusedmem += ovf; 674 } while (vps->end > atop(LIMITMEM * 1024 * 1024)); 675 } 676 #endif /* LIMITMEM */ 677 678 maxmem = physmem; 679 680 #if 0 681 printf("totalphysmem = %d\n", totalphysmem); 682 printf("physmem = %d\n", physmem); 683 printf("resvmem = %d\n", resvmem); 684 printf("unusedmem = %d\n", unusedmem); 685 printf("unknownmem = %d\n", unknownmem); 686 #endif 687 688 /* 689 * Adjust some parameters if the amount of physmem 690 * available would cause us to croak. This is completely 691 * eyeballed and isn't meant to be the final answer. 692 * vm_phys_size is probably the only one to really worry 693 * about. 694 * 695 * It's for booting a GENERIC kernel on a large memory platform. 696 */ 697 if (physmem >= atop(128 * 1024 * 1024)) { 698 vm_kmem_size <<= 3; 699 vm_phys_size <<= 2; 700 } 701 702 /* 703 * Initialize error message buffer (at end of core). 704 */ 705 { 706 size_t sz = round_page(MSGBUFSIZE); 707 708 vps = &vm_physmem[vm_nphysseg - 1]; 709 710 /* shrink so that it'll fit in the last segment */ 711 if ((vps->avail_end - vps->avail_start) < atop(sz)) 712 sz = ptoa(vps->avail_end - vps->avail_start); 713 714 vps->end -= atop(sz); 715 vps->avail_end -= atop(sz); 716 msgbufaddr = (caddr_t) ALPHA_PHYS_TO_K0SEG(ptoa(vps->end)); 717 initmsgbuf(msgbufaddr, sz); 718 719 /* Remove the last segment if it now has no pages. */ 720 if (vps->start == vps->end) 721 vm_nphysseg--; 722 723 /* warn if the message buffer had to be shrunk */ 724 if (sz != round_page(MSGBUFSIZE)) 725 printf("WARNING: %ld bytes not available for msgbuf in last cluster (%ld used)\n", 726 round_page(MSGBUFSIZE), sz); 727 728 } 729 730 /* 731 * Init mapping for u page(s) for proc 0 732 */ 733 proc0.p_addr = proc0paddr = 734 (struct user *)pmap_steal_memory(UPAGES * PAGE_SIZE, NULL, NULL); 735 736 /* 737 * Allocate space for system data structures. These data structures 738 * are allocated here instead of cpu_startup() because physical 739 * memory is directly addressable. We don't have to map these into 740 * virtual address space. 741 */ 742 size = (vsize_t)allocsys(NULL, mdallocsys); 743 v = (caddr_t)pmap_steal_memory(size, NULL, NULL); 744 if ((allocsys(v, mdallocsys) - v) != size) 745 panic("alpha_init: table size inconsistency"); 746 747 /* 748 * Initialize the virtual memory system, and set the 749 * page table base register in proc 0's PCB. 750 */ 751 pmap_bootstrap(ALPHA_PHYS_TO_K0SEG(ptb << PGSHIFT), 752 hwrpb->rpb_max_asn, hwrpb->rpb_pcs_cnt); 753 754 /* 755 * Initialize the rest of proc 0's PCB, and cache its physical 756 * address. 757 */ 758 proc0.p_md.md_pcbpaddr = 759 (struct pcb *)ALPHA_K0SEG_TO_PHYS((vaddr_t)&proc0paddr->u_pcb); 760 761 /* 762 * Set the kernel sp, reserving space for an (empty) trapframe, 763 * and make proc0's trapframe pointer point to it for sanity. 764 */ 765 proc0paddr->u_pcb.pcb_hw.apcb_ksp = 766 (u_int64_t)proc0paddr + USPACE - sizeof(struct trapframe); 767 proc0.p_md.md_tf = 768 (struct trapframe *)proc0paddr->u_pcb.pcb_hw.apcb_ksp; 769 770 /* 771 * Look at arguments passed to us and compute boothowto. 772 */ 773 774 boothowto = RB_SINGLE; 775 #ifdef KADB 776 boothowto |= RB_KDB; 777 #endif 778 for (p = bootinfo.boot_flags; p && *p != '\0'; p++) { 779 /* 780 * Note that we'd really like to differentiate case here, 781 * but the Alpha AXP Architecture Reference Manual 782 * says that we shouldn't. 783 */ 784 switch (*p) { 785 case 'a': /* autoboot */ 786 case 'A': 787 boothowto &= ~RB_SINGLE; 788 break; 789 790 #ifdef DEBUG 791 case 'c': /* crash dump immediately after autoconfig */ 792 case 'C': 793 boothowto |= RB_DUMP; 794 break; 795 #endif 796 797 #if defined(KGDB) || defined(DDB) 798 case 'd': /* break into the kernel debugger ASAP */ 799 case 'D': 800 boothowto |= RB_KDB; 801 break; 802 #endif 803 804 case 'h': /* always halt, never reboot */ 805 case 'H': 806 boothowto |= RB_HALT; 807 break; 808 809 #if 0 810 case 'm': /* mini root present in memory */ 811 case 'M': 812 boothowto |= RB_MINIROOT; 813 break; 814 #endif 815 816 case 'n': /* askname */ 817 case 'N': 818 boothowto |= RB_ASKNAME; 819 break; 820 821 case 's': /* single-user (default, supported for sanity) */ 822 case 'S': 823 boothowto |= RB_SINGLE; 824 break; 825 826 case '-': 827 /* 828 * Just ignore this. It's not required, but it's 829 * common for it to be passed regardless. 830 */ 831 break; 832 833 default: 834 printf("Unrecognized boot flag '%c'.\n", *p); 835 break; 836 } 837 } 838 839 840 /* 841 * Figure out the number of cpus in the box, from RPB fields. 842 * Really. We mean it. 843 */ 844 for (i = 0; i < hwrpb->rpb_pcs_cnt; i++) { 845 struct pcs *pcsp; 846 847 pcsp = LOCATE_PCS(hwrpb, i); 848 if ((pcsp->pcs_flags & PCS_PP) != 0) 849 ncpus++; 850 } 851 852 /* 853 * Initialize debuggers, and break into them if appropriate. 854 */ 855 #ifdef DDB 856 db_machine_init(); 857 ddb_init((int)((u_int64_t)ksym_end - (u_int64_t)ksym_start), 858 ksym_start, ksym_end); 859 if (boothowto & RB_KDB) 860 Debugger(); 861 #endif 862 #ifdef KGDB 863 if (boothowto & RB_KDB) 864 kgdb_connect(0); 865 #endif 866 /* 867 * Figure out our clock frequency, from RPB fields. 868 */ 869 hz = hwrpb->rpb_intr_freq >> 12; 870 if (!(60 <= hz && hz <= 10240)) { 871 hz = 1024; 872 #ifdef DIAGNOSTIC 873 printf("WARNING: unbelievable rpb_intr_freq: %ld (%d hz)\n", 874 hwrpb->rpb_intr_freq, hz); 875 #endif 876 } 877 } 878 879 caddr_t 880 mdallocsys(v) 881 caddr_t v; 882 { 883 /* 884 * There appears to be a correlation between the number 885 * of processor slots defined in the HWRPB and the whami 886 * value that can be returned. 887 */ 888 ALLOCSYS(v, mchkinfo_all_cpus, struct mchkinfo, hwrpb->rpb_pcs_cnt); 889 return (v); 890 } 891 892 void 893 consinit() 894 { 895 896 /* 897 * Everything related to console initialization is done 898 * in alpha_init(). 899 */ 900 #if defined(DIAGNOSTIC) && defined(_PMAP_MAY_USE_PROM_CONSOLE) 901 printf("consinit: %susing prom console\n", 902 pmap_uses_prom_console() ? "" : "not "); 903 #endif 904 } 905 906 #include "pckbc.h" 907 #include "pckbd.h" 908 #if (NPCKBC > 0) && (NPCKBD == 0) 909 910 #include <dev/isa/pckbcvar.h> 911 912 /* 913 * This is called by the pbkbc driver if no pckbd is configured. 914 * On the i386, it is used to glue in the old, deprecated console 915 * code. On the Alpha, it does nothing. 916 */ 917 int 918 pckbc_machdep_cnattach(kbctag, kbcslot) 919 pckbc_tag_t kbctag; 920 pckbc_slot_t kbcslot; 921 { 922 923 return (ENXIO); 924 } 925 #endif /* NPCKBC > 0 && NPCKBD == 0 */ 926 927 void 928 cpu_startup() 929 { 930 register unsigned i; 931 int base, residual; 932 vaddr_t minaddr, maxaddr; 933 vsize_t size; 934 char pbuf[9]; 935 #if defined(DEBUG) 936 extern int pmapdebug; 937 int opmapdebug = pmapdebug; 938 939 pmapdebug = 0; 940 #endif 941 942 /* 943 * Good {morning,afternoon,evening,night}. 944 */ 945 printf(version); 946 identifycpu(); 947 format_bytes(pbuf, sizeof(pbuf), totalphysmem << PAGE_SHIFT); 948 printf("total memory = %s\n", pbuf); 949 format_bytes(pbuf, sizeof(pbuf), ptoa(resvmem)); 950 printf("(%s reserved for PROM, ", pbuf); 951 format_bytes(pbuf, sizeof(pbuf), ptoa(physmem)); 952 printf("%s used by NetBSD)\n", pbuf); 953 if (unusedmem) { 954 format_bytes(pbuf, sizeof(pbuf), ctob(unusedmem)); 955 printf("WARNING: unused memory = %s\n", pbuf); 956 } 957 if (unknownmem) { 958 format_bytes(pbuf, sizeof(pbuf), ctob(unknownmem)); 959 printf("WARNING: %s of memory with unknown purpose\n", pbuf); 960 } 961 962 /* 963 * Allocate virtual address space for file I/O buffers. 964 * Note they are different than the array of headers, 'buf', 965 * and usually occupy more virtual memory than physical. 966 */ 967 size = MAXBSIZE * nbuf; 968 if (uvm_map(kernel_map, (vaddr_t *) &buffers, round_page(size), 969 NULL, UVM_UNKNOWN_OFFSET, 970 UVM_MAPFLAG(UVM_PROT_NONE, UVM_PROT_NONE, UVM_INH_NONE, 971 UVM_ADV_NORMAL, 0)) != KERN_SUCCESS) 972 panic("startup: cannot allocate VM for buffers"); 973 base = bufpages / nbuf; 974 residual = bufpages % nbuf; 975 for (i = 0; i < nbuf; i++) { 976 vsize_t curbufsize; 977 vaddr_t curbuf; 978 struct vm_page *pg; 979 980 /* 981 * Each buffer has MAXBSIZE bytes of VM space allocated. Of 982 * that MAXBSIZE space, we allocate and map (base+1) pages 983 * for the first "residual" buffers, and then we allocate 984 * "base" pages for the rest. 985 */ 986 curbuf = (vaddr_t) buffers + (i * MAXBSIZE); 987 curbufsize = CLBYTES * ((i < residual) ? (base+1) : base); 988 989 while (curbufsize) { 990 pg = uvm_pagealloc(NULL, 0, NULL, 0); 991 if (pg == NULL) 992 panic("cpu_startup: not enough memory for " 993 "buffer cache"); 994 #if defined(PMAP_NEW) 995 pmap_kenter_pgs(curbuf, &pg, 1); 996 #else 997 pmap_enter(kernel_map->pmap, curbuf, 998 VM_PAGE_TO_PHYS(pg), VM_PROT_READ|VM_PROT_WRITE, 999 TRUE, VM_PROT_READ|VM_PROT_WRITE); 1000 #endif 1001 curbuf += PAGE_SIZE; 1002 curbufsize -= PAGE_SIZE; 1003 } 1004 } 1005 /* 1006 * Allocate a submap for exec arguments. This map effectively 1007 * limits the number of processes exec'ing at any time. 1008 */ 1009 exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 1010 16 * NCARGS, VM_MAP_PAGEABLE, FALSE, NULL); 1011 1012 /* 1013 * Allocate a submap for physio 1014 */ 1015 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 1016 VM_PHYS_SIZE, 0, FALSE, NULL); 1017 1018 /* 1019 * No need to allocate an mbuf cluster submap. Mbuf clusters 1020 * are allocated via the pool allocator, and we use K0SEG to 1021 * map those pages. 1022 */ 1023 1024 /* 1025 * Initialize callouts 1026 */ 1027 callfree = callout; 1028 for (i = 1; i < ncallout; i++) 1029 callout[i-1].c_next = &callout[i]; 1030 callout[i-1].c_next = NULL; 1031 1032 #if defined(DEBUG) 1033 pmapdebug = opmapdebug; 1034 #endif 1035 format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 1036 printf("avail memory = %s\n", pbuf); 1037 #if 0 1038 { 1039 extern u_long pmap_pages_stolen; 1040 1041 format_bytes(pbuf, sizeof(pbuf), pmap_pages_stolen * PAGE_SIZE); 1042 printf("stolen memory for VM structures = %s\n", pbuf); 1043 } 1044 #endif 1045 format_bytes(pbuf, sizeof(pbuf), bufpages * CLBYTES); 1046 printf("using %ld buffers containing %s of memory\n", (long)nbuf, pbuf); 1047 1048 /* 1049 * Set up buffers, so they can be used to read disk labels. 1050 */ 1051 bufinit(); 1052 1053 /* 1054 * Set up the HWPCB so that it's safe to configure secondary 1055 * CPUs. 1056 */ 1057 hwrpb_primary_init(); 1058 } 1059 1060 /* 1061 * Retrieve the platform name from the DSR. 1062 */ 1063 const char * 1064 alpha_dsr_sysname() 1065 { 1066 struct dsrdb *dsr; 1067 const char *sysname; 1068 1069 /* 1070 * DSR does not exist on early HWRPB versions. 1071 */ 1072 if (hwrpb->rpb_version < HWRPB_DSRDB_MINVERS) 1073 return (NULL); 1074 1075 dsr = (struct dsrdb *)(((caddr_t)hwrpb) + hwrpb->rpb_dsrdb_off); 1076 sysname = (const char *)((caddr_t)dsr + (dsr->dsr_sysname_off + 1077 sizeof(u_int64_t))); 1078 return (sysname); 1079 } 1080 1081 /* 1082 * Lookup the system specified system variation in the provided table, 1083 * returning the model string on match. 1084 */ 1085 const char * 1086 alpha_variation_name(variation, avtp) 1087 u_int64_t variation; 1088 const struct alpha_variation_table *avtp; 1089 { 1090 int i; 1091 1092 for (i = 0; avtp[i].avt_model != NULL; i++) 1093 if (avtp[i].avt_variation == variation) 1094 return (avtp[i].avt_model); 1095 return (NULL); 1096 } 1097 1098 /* 1099 * Generate a default platform name based for unknown system variations. 1100 */ 1101 const char * 1102 alpha_unknown_sysname() 1103 { 1104 static char s[128]; /* safe size */ 1105 1106 sprintf(s, "%s family, unknown model variation 0x%lx", 1107 platform.family, hwrpb->rpb_variation & SV_ST_MASK); 1108 return ((const char *)s); 1109 } 1110 1111 void 1112 identifycpu() 1113 { 1114 char *s; 1115 1116 /* 1117 * print out CPU identification information. 1118 */ 1119 printf("%s", cpu_model); 1120 for(s = cpu_model; *s; ++s) 1121 if(strncasecmp(s, "MHz", 3) == 0) 1122 goto skipMHz; 1123 printf(", %ldMHz", hwrpb->rpb_cc_freq / 1000000); 1124 skipMHz: 1125 printf("\n"); 1126 printf("%ld byte page size, %d processor%s.\n", 1127 hwrpb->rpb_page_size, ncpus, ncpus == 1 ? "" : "s"); 1128 #if 0 1129 /* this isn't defined for any systems that we run on? */ 1130 printf("serial number 0x%lx 0x%lx\n", 1131 ((long *)hwrpb->rpb_ssn)[0], ((long *)hwrpb->rpb_ssn)[1]); 1132 1133 /* and these aren't particularly useful! */ 1134 printf("variation: 0x%lx, revision 0x%lx\n", 1135 hwrpb->rpb_variation, *(long *)hwrpb->rpb_revision); 1136 #endif 1137 } 1138 1139 int waittime = -1; 1140 struct pcb dumppcb; 1141 1142 void 1143 cpu_reboot(howto, bootstr) 1144 int howto; 1145 char *bootstr; 1146 { 1147 extern int cold; 1148 #if defined(MULTIPROCESSOR) 1149 #if 0 /* XXX See below. */ 1150 u_long cpu_id; 1151 #endif 1152 #endif 1153 1154 #if defined(MULTIPROCESSOR) 1155 /* We must be running on the primary CPU. */ 1156 if (alpha_pal_whami() != hwrpb->rpb_primary_cpu_id) 1157 panic("cpu_reboot: not on primary CPU!"); 1158 #endif 1159 1160 /* If system is cold, just halt. */ 1161 if (cold) { 1162 howto |= RB_HALT; 1163 goto haltsys; 1164 } 1165 1166 /* If "always halt" was specified as a boot flag, obey. */ 1167 if ((boothowto & RB_HALT) != 0) 1168 howto |= RB_HALT; 1169 1170 boothowto = howto; 1171 if ((howto & RB_NOSYNC) == 0 && waittime < 0) { 1172 waittime = 0; 1173 vfs_shutdown(); 1174 /* 1175 * If we've been adjusting the clock, the todr 1176 * will be out of synch; adjust it now. 1177 */ 1178 resettodr(); 1179 } 1180 1181 /* Disable interrupts. */ 1182 splhigh(); 1183 1184 /* If rebooting and a dump is requested do it. */ 1185 #if 0 1186 if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP) 1187 #else 1188 if (howto & RB_DUMP) 1189 #endif 1190 dumpsys(); 1191 1192 haltsys: 1193 1194 /* run any shutdown hooks */ 1195 doshutdownhooks(); 1196 1197 #if defined(MULTIPROCESSOR) 1198 #if 0 /* XXX doesn't work when called from here?! */ 1199 /* Kill off any secondary CPUs. */ 1200 for (cpu_id = 0; cpu_id < hwrpb->rpb_pcs_cnt; cpu_id++) { 1201 if (cpu_id == hwrpb->rpb_primary_cpu_id || 1202 cpu_info[cpu_id].ci_softc == NULL) 1203 continue; 1204 cpu_halt_secondary(cpu_id); 1205 } 1206 #endif 1207 #endif 1208 1209 #ifdef BOOTKEY 1210 printf("hit any key to %s...\n", howto & RB_HALT ? "halt" : "reboot"); 1211 cnpollc(1); /* for proper keyboard command handling */ 1212 cngetc(); 1213 cnpollc(0); 1214 printf("\n"); 1215 #endif 1216 1217 /* Finally, powerdown/halt/reboot the system. */ 1218 if ((howto && RB_POWERDOWN) == RB_POWERDOWN && 1219 platform.powerdown != NULL) { 1220 (*platform.powerdown)(); 1221 printf("WARNING: powerdown failed!\n"); 1222 } 1223 printf("%s\n\n", howto & RB_HALT ? "halted." : "rebooting..."); 1224 prom_halt(howto & RB_HALT); 1225 /*NOTREACHED*/ 1226 } 1227 1228 /* 1229 * These variables are needed by /sbin/savecore 1230 */ 1231 u_long dumpmag = 0x8fca0101; /* magic number */ 1232 int dumpsize = 0; /* pages */ 1233 long dumplo = 0; /* blocks */ 1234 1235 /* 1236 * cpu_dumpsize: calculate size of machine-dependent kernel core dump headers. 1237 */ 1238 int 1239 cpu_dumpsize() 1240 { 1241 int size; 1242 1243 size = ALIGN(sizeof(kcore_seg_t)) + ALIGN(sizeof(cpu_kcore_hdr_t)) + 1244 ALIGN(mem_cluster_cnt * sizeof(phys_ram_seg_t)); 1245 if (roundup(size, dbtob(1)) != dbtob(1)) 1246 return -1; 1247 1248 return (1); 1249 } 1250 1251 /* 1252 * cpu_dump_mempagecnt: calculate size of RAM (in pages) to be dumped. 1253 */ 1254 u_long 1255 cpu_dump_mempagecnt() 1256 { 1257 u_long i, n; 1258 1259 n = 0; 1260 for (i = 0; i < mem_cluster_cnt; i++) 1261 n += atop(mem_clusters[i].size); 1262 return (n); 1263 } 1264 1265 /* 1266 * cpu_dump: dump machine-dependent kernel core dump headers. 1267 */ 1268 int 1269 cpu_dump() 1270 { 1271 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1272 char buf[dbtob(1)]; 1273 kcore_seg_t *segp; 1274 cpu_kcore_hdr_t *cpuhdrp; 1275 phys_ram_seg_t *memsegp; 1276 int i; 1277 1278 dump = bdevsw[major(dumpdev)].d_dump; 1279 1280 bzero(buf, sizeof buf); 1281 segp = (kcore_seg_t *)buf; 1282 cpuhdrp = (cpu_kcore_hdr_t *)&buf[ALIGN(sizeof(*segp))]; 1283 memsegp = (phys_ram_seg_t *)&buf[ ALIGN(sizeof(*segp)) + 1284 ALIGN(sizeof(*cpuhdrp))]; 1285 1286 /* 1287 * Generate a segment header. 1288 */ 1289 CORE_SETMAGIC(*segp, KCORE_MAGIC, MID_MACHINE, CORE_CPU); 1290 segp->c_size = dbtob(1) - ALIGN(sizeof(*segp)); 1291 1292 /* 1293 * Add the machine-dependent header info. 1294 */ 1295 cpuhdrp->lev1map_pa = ALPHA_K0SEG_TO_PHYS((vaddr_t)kernel_lev1map); 1296 cpuhdrp->page_size = PAGE_SIZE; 1297 cpuhdrp->nmemsegs = mem_cluster_cnt; 1298 1299 /* 1300 * Fill in the memory segment descriptors. 1301 */ 1302 for (i = 0; i < mem_cluster_cnt; i++) { 1303 memsegp[i].start = mem_clusters[i].start; 1304 memsegp[i].size = mem_clusters[i].size & ~PAGE_MASK; 1305 } 1306 1307 return (dump(dumpdev, dumplo, (caddr_t)buf, dbtob(1))); 1308 } 1309 1310 /* 1311 * This is called by main to set dumplo and dumpsize. 1312 * Dumps always skip the first CLBYTES of disk space 1313 * in case there might be a disk label stored there. 1314 * If there is extra space, put dump at the end to 1315 * reduce the chance that swapping trashes it. 1316 */ 1317 void 1318 cpu_dumpconf() 1319 { 1320 int nblks, dumpblks; /* size of dump area */ 1321 int maj; 1322 1323 if (dumpdev == NODEV) 1324 goto bad; 1325 maj = major(dumpdev); 1326 if (maj < 0 || maj >= nblkdev) 1327 panic("dumpconf: bad dumpdev=0x%x", dumpdev); 1328 if (bdevsw[maj].d_psize == NULL) 1329 goto bad; 1330 nblks = (*bdevsw[maj].d_psize)(dumpdev); 1331 if (nblks <= ctod(1)) 1332 goto bad; 1333 1334 dumpblks = cpu_dumpsize(); 1335 if (dumpblks < 0) 1336 goto bad; 1337 dumpblks += ctod(cpu_dump_mempagecnt()); 1338 1339 /* If dump won't fit (incl. room for possible label), punt. */ 1340 if (dumpblks > (nblks - ctod(1))) 1341 goto bad; 1342 1343 /* Put dump at end of partition */ 1344 dumplo = nblks - dumpblks; 1345 1346 /* dumpsize is in page units, and doesn't include headers. */ 1347 dumpsize = cpu_dump_mempagecnt(); 1348 return; 1349 1350 bad: 1351 dumpsize = 0; 1352 return; 1353 } 1354 1355 /* 1356 * Dump the kernel's image to the swap partition. 1357 */ 1358 #define BYTES_PER_DUMP NBPG 1359 1360 void 1361 dumpsys() 1362 { 1363 u_long totalbytesleft, bytes, i, n, memcl; 1364 u_long maddr; 1365 int psize; 1366 daddr_t blkno; 1367 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1368 int error; 1369 1370 /* Save registers. */ 1371 savectx(&dumppcb); 1372 1373 msgbufenabled = 0; /* don't record dump msgs in msgbuf */ 1374 if (dumpdev == NODEV) 1375 return; 1376 1377 /* 1378 * For dumps during autoconfiguration, 1379 * if dump device has already configured... 1380 */ 1381 if (dumpsize == 0) 1382 cpu_dumpconf(); 1383 if (dumplo <= 0) { 1384 printf("\ndump to dev %u,%u not possible\n", major(dumpdev), 1385 minor(dumpdev)); 1386 return; 1387 } 1388 printf("\ndumping to dev %u,%u offset %ld\n", major(dumpdev), 1389 minor(dumpdev), dumplo); 1390 1391 psize = (*bdevsw[major(dumpdev)].d_psize)(dumpdev); 1392 printf("dump "); 1393 if (psize == -1) { 1394 printf("area unavailable\n"); 1395 return; 1396 } 1397 1398 /* XXX should purge all outstanding keystrokes. */ 1399 1400 if ((error = cpu_dump()) != 0) 1401 goto err; 1402 1403 totalbytesleft = ptoa(cpu_dump_mempagecnt()); 1404 blkno = dumplo + cpu_dumpsize(); 1405 dump = bdevsw[major(dumpdev)].d_dump; 1406 error = 0; 1407 1408 for (memcl = 0; memcl < mem_cluster_cnt; memcl++) { 1409 maddr = mem_clusters[memcl].start; 1410 bytes = mem_clusters[memcl].size & ~PAGE_MASK; 1411 1412 for (i = 0; i < bytes; i += n, totalbytesleft -= n) { 1413 1414 /* Print out how many MBs we to go. */ 1415 if ((totalbytesleft % (1024*1024)) == 0) 1416 printf("%ld ", totalbytesleft / (1024 * 1024)); 1417 1418 /* Limit size for next transfer. */ 1419 n = bytes - i; 1420 if (n > BYTES_PER_DUMP) 1421 n = BYTES_PER_DUMP; 1422 1423 error = (*dump)(dumpdev, blkno, 1424 (caddr_t)ALPHA_PHYS_TO_K0SEG(maddr), n); 1425 if (error) 1426 goto err; 1427 maddr += n; 1428 blkno += btodb(n); /* XXX? */ 1429 1430 /* XXX should look for keystrokes, to cancel. */ 1431 } 1432 } 1433 1434 err: 1435 switch (error) { 1436 1437 case ENXIO: 1438 printf("device bad\n"); 1439 break; 1440 1441 case EFAULT: 1442 printf("device not ready\n"); 1443 break; 1444 1445 case EINVAL: 1446 printf("area improper\n"); 1447 break; 1448 1449 case EIO: 1450 printf("i/o error\n"); 1451 break; 1452 1453 case EINTR: 1454 printf("aborted from console\n"); 1455 break; 1456 1457 case 0: 1458 printf("succeeded\n"); 1459 break; 1460 1461 default: 1462 printf("error %d\n", error); 1463 break; 1464 } 1465 printf("\n\n"); 1466 delay(1000); 1467 } 1468 1469 void 1470 frametoreg(framep, regp) 1471 struct trapframe *framep; 1472 struct reg *regp; 1473 { 1474 1475 regp->r_regs[R_V0] = framep->tf_regs[FRAME_V0]; 1476 regp->r_regs[R_T0] = framep->tf_regs[FRAME_T0]; 1477 regp->r_regs[R_T1] = framep->tf_regs[FRAME_T1]; 1478 regp->r_regs[R_T2] = framep->tf_regs[FRAME_T2]; 1479 regp->r_regs[R_T3] = framep->tf_regs[FRAME_T3]; 1480 regp->r_regs[R_T4] = framep->tf_regs[FRAME_T4]; 1481 regp->r_regs[R_T5] = framep->tf_regs[FRAME_T5]; 1482 regp->r_regs[R_T6] = framep->tf_regs[FRAME_T6]; 1483 regp->r_regs[R_T7] = framep->tf_regs[FRAME_T7]; 1484 regp->r_regs[R_S0] = framep->tf_regs[FRAME_S0]; 1485 regp->r_regs[R_S1] = framep->tf_regs[FRAME_S1]; 1486 regp->r_regs[R_S2] = framep->tf_regs[FRAME_S2]; 1487 regp->r_regs[R_S3] = framep->tf_regs[FRAME_S3]; 1488 regp->r_regs[R_S4] = framep->tf_regs[FRAME_S4]; 1489 regp->r_regs[R_S5] = framep->tf_regs[FRAME_S5]; 1490 regp->r_regs[R_S6] = framep->tf_regs[FRAME_S6]; 1491 regp->r_regs[R_A0] = framep->tf_regs[FRAME_A0]; 1492 regp->r_regs[R_A1] = framep->tf_regs[FRAME_A1]; 1493 regp->r_regs[R_A2] = framep->tf_regs[FRAME_A2]; 1494 regp->r_regs[R_A3] = framep->tf_regs[FRAME_A3]; 1495 regp->r_regs[R_A4] = framep->tf_regs[FRAME_A4]; 1496 regp->r_regs[R_A5] = framep->tf_regs[FRAME_A5]; 1497 regp->r_regs[R_T8] = framep->tf_regs[FRAME_T8]; 1498 regp->r_regs[R_T9] = framep->tf_regs[FRAME_T9]; 1499 regp->r_regs[R_T10] = framep->tf_regs[FRAME_T10]; 1500 regp->r_regs[R_T11] = framep->tf_regs[FRAME_T11]; 1501 regp->r_regs[R_RA] = framep->tf_regs[FRAME_RA]; 1502 regp->r_regs[R_T12] = framep->tf_regs[FRAME_T12]; 1503 regp->r_regs[R_AT] = framep->tf_regs[FRAME_AT]; 1504 regp->r_regs[R_GP] = framep->tf_regs[FRAME_GP]; 1505 /* regp->r_regs[R_SP] = framep->tf_regs[FRAME_SP]; XXX */ 1506 regp->r_regs[R_ZERO] = 0; 1507 } 1508 1509 void 1510 regtoframe(regp, framep) 1511 struct reg *regp; 1512 struct trapframe *framep; 1513 { 1514 1515 framep->tf_regs[FRAME_V0] = regp->r_regs[R_V0]; 1516 framep->tf_regs[FRAME_T0] = regp->r_regs[R_T0]; 1517 framep->tf_regs[FRAME_T1] = regp->r_regs[R_T1]; 1518 framep->tf_regs[FRAME_T2] = regp->r_regs[R_T2]; 1519 framep->tf_regs[FRAME_T3] = regp->r_regs[R_T3]; 1520 framep->tf_regs[FRAME_T4] = regp->r_regs[R_T4]; 1521 framep->tf_regs[FRAME_T5] = regp->r_regs[R_T5]; 1522 framep->tf_regs[FRAME_T6] = regp->r_regs[R_T6]; 1523 framep->tf_regs[FRAME_T7] = regp->r_regs[R_T7]; 1524 framep->tf_regs[FRAME_S0] = regp->r_regs[R_S0]; 1525 framep->tf_regs[FRAME_S1] = regp->r_regs[R_S1]; 1526 framep->tf_regs[FRAME_S2] = regp->r_regs[R_S2]; 1527 framep->tf_regs[FRAME_S3] = regp->r_regs[R_S3]; 1528 framep->tf_regs[FRAME_S4] = regp->r_regs[R_S4]; 1529 framep->tf_regs[FRAME_S5] = regp->r_regs[R_S5]; 1530 framep->tf_regs[FRAME_S6] = regp->r_regs[R_S6]; 1531 framep->tf_regs[FRAME_A0] = regp->r_regs[R_A0]; 1532 framep->tf_regs[FRAME_A1] = regp->r_regs[R_A1]; 1533 framep->tf_regs[FRAME_A2] = regp->r_regs[R_A2]; 1534 framep->tf_regs[FRAME_A3] = regp->r_regs[R_A3]; 1535 framep->tf_regs[FRAME_A4] = regp->r_regs[R_A4]; 1536 framep->tf_regs[FRAME_A5] = regp->r_regs[R_A5]; 1537 framep->tf_regs[FRAME_T8] = regp->r_regs[R_T8]; 1538 framep->tf_regs[FRAME_T9] = regp->r_regs[R_T9]; 1539 framep->tf_regs[FRAME_T10] = regp->r_regs[R_T10]; 1540 framep->tf_regs[FRAME_T11] = regp->r_regs[R_T11]; 1541 framep->tf_regs[FRAME_RA] = regp->r_regs[R_RA]; 1542 framep->tf_regs[FRAME_T12] = regp->r_regs[R_T12]; 1543 framep->tf_regs[FRAME_AT] = regp->r_regs[R_AT]; 1544 framep->tf_regs[FRAME_GP] = regp->r_regs[R_GP]; 1545 /* framep->tf_regs[FRAME_SP] = regp->r_regs[R_SP]; XXX */ 1546 /* ??? = regp->r_regs[R_ZERO]; */ 1547 } 1548 1549 void 1550 printregs(regp) 1551 struct reg *regp; 1552 { 1553 int i; 1554 1555 for (i = 0; i < 32; i++) 1556 printf("R%d:\t0x%016lx%s", i, regp->r_regs[i], 1557 i & 1 ? "\n" : "\t"); 1558 } 1559 1560 void 1561 regdump(framep) 1562 struct trapframe *framep; 1563 { 1564 struct reg reg; 1565 1566 frametoreg(framep, ®); 1567 reg.r_regs[R_SP] = alpha_pal_rdusp(); 1568 1569 printf("REGISTERS:\n"); 1570 printregs(®); 1571 } 1572 1573 #ifdef DEBUG 1574 int sigdebug = 0; 1575 int sigpid = 0; 1576 #define SDB_FOLLOW 0x01 1577 #define SDB_KSTACK 0x02 1578 #endif 1579 1580 /* 1581 * Send an interrupt to process. 1582 */ 1583 void 1584 sendsig(catcher, sig, mask, code) 1585 sig_t catcher; 1586 int sig; 1587 sigset_t *mask; 1588 u_long code; 1589 { 1590 struct proc *p = curproc; 1591 struct sigcontext *scp, ksc; 1592 struct trapframe *frame; 1593 struct sigacts *psp = p->p_sigacts; 1594 int onstack, fsize, rndfsize; 1595 1596 frame = p->p_md.md_tf; 1597 1598 /* Do we need to jump onto the signal stack? */ 1599 onstack = 1600 (psp->ps_sigstk.ss_flags & (SS_DISABLE | SS_ONSTACK)) == 0 && 1601 (psp->ps_sigact[sig].sa_flags & SA_ONSTACK) != 0; 1602 1603 /* Allocate space for the signal handler context. */ 1604 fsize = sizeof(ksc); 1605 rndfsize = ((fsize + 15) / 16) * 16; 1606 1607 if (onstack) 1608 scp = (struct sigcontext *)((caddr_t)psp->ps_sigstk.ss_sp + 1609 psp->ps_sigstk.ss_size); 1610 else 1611 scp = (struct sigcontext *)(alpha_pal_rdusp()); 1612 scp = (struct sigcontext *)((caddr_t)scp - rndfsize); 1613 1614 #ifdef DEBUG 1615 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1616 printf("sendsig(%d): sig %d ssp %p usp %p\n", p->p_pid, 1617 sig, &onstack, scp); 1618 #endif 1619 1620 /* Build stack frame for signal trampoline. */ 1621 ksc.sc_pc = frame->tf_regs[FRAME_PC]; 1622 ksc.sc_ps = frame->tf_regs[FRAME_PS]; 1623 1624 /* Save register context. */ 1625 frametoreg(frame, (struct reg *)ksc.sc_regs); 1626 ksc.sc_regs[R_ZERO] = 0xACEDBADE; /* magic number */ 1627 ksc.sc_regs[R_SP] = alpha_pal_rdusp(); 1628 1629 /* save the floating-point state, if necessary, then copy it. */ 1630 if (p == fpcurproc) { 1631 alpha_pal_wrfen(1); 1632 savefpstate(&p->p_addr->u_pcb.pcb_fp); 1633 alpha_pal_wrfen(0); 1634 fpcurproc = NULL; 1635 } 1636 ksc.sc_ownedfp = p->p_md.md_flags & MDP_FPUSED; 1637 bcopy(&p->p_addr->u_pcb.pcb_fp, (struct fpreg *)ksc.sc_fpregs, 1638 sizeof(struct fpreg)); 1639 ksc.sc_fp_control = 0; /* XXX ? */ 1640 bzero(ksc.sc_reserved, sizeof ksc.sc_reserved); /* XXX */ 1641 bzero(ksc.sc_xxx, sizeof ksc.sc_xxx); /* XXX */ 1642 1643 /* Save signal stack. */ 1644 ksc.sc_onstack = psp->ps_sigstk.ss_flags & SS_ONSTACK; 1645 1646 /* Save signal mask. */ 1647 ksc.sc_mask = *mask; 1648 1649 #ifdef COMPAT_13 1650 /* 1651 * XXX We always have to save an old style signal mask because 1652 * XXX we might be delivering a signal to a process which will 1653 * XXX escape from the signal in a non-standard way and invoke 1654 * XXX sigreturn() directly. 1655 */ 1656 { 1657 /* Note: it's a long in the stack frame. */ 1658 sigset13_t mask13; 1659 1660 native_sigset_to_sigset13(mask, &mask13); 1661 ksc.__sc_mask13 = mask13; 1662 } 1663 #endif 1664 1665 #ifdef COMPAT_OSF1 1666 /* 1667 * XXX Create an OSF/1-style sigcontext and associated goo. 1668 */ 1669 #endif 1670 1671 if (copyout(&ksc, (caddr_t)scp, fsize) != 0) { 1672 /* 1673 * Process has trashed its stack; give it an illegal 1674 * instruction to halt it in its tracks. 1675 */ 1676 #ifdef DEBUG 1677 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1678 printf("sendsig(%d): copyout failed on sig %d\n", 1679 p->p_pid, sig); 1680 #endif 1681 sigexit(p, SIGILL); 1682 /* NOTREACHED */ 1683 } 1684 #ifdef DEBUG 1685 if (sigdebug & SDB_FOLLOW) 1686 printf("sendsig(%d): sig %d scp %p code %lx\n", p->p_pid, sig, 1687 scp, code); 1688 #endif 1689 1690 /* Set up the registers to return to sigcode. */ 1691 frame->tf_regs[FRAME_PC] = (u_int64_t)psp->ps_sigcode; 1692 frame->tf_regs[FRAME_A0] = sig; 1693 frame->tf_regs[FRAME_A1] = code; 1694 frame->tf_regs[FRAME_A2] = (u_int64_t)scp; 1695 frame->tf_regs[FRAME_T12] = (u_int64_t)catcher; /* t12 is pv */ 1696 alpha_pal_wrusp((unsigned long)scp); 1697 1698 /* Remember that we're now on the signal stack. */ 1699 if (onstack) 1700 psp->ps_sigstk.ss_flags |= SS_ONSTACK; 1701 1702 #ifdef DEBUG 1703 if (sigdebug & SDB_FOLLOW) 1704 printf("sendsig(%d): pc %lx, catcher %lx\n", p->p_pid, 1705 frame->tf_regs[FRAME_PC], frame->tf_regs[FRAME_A3]); 1706 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1707 printf("sendsig(%d): sig %d returns\n", 1708 p->p_pid, sig); 1709 #endif 1710 } 1711 1712 /* 1713 * System call to cleanup state after a signal 1714 * has been taken. Reset signal mask and 1715 * stack state from context left by sendsig (above). 1716 * Return to previous pc and psl as specified by 1717 * context left by sendsig. Check carefully to 1718 * make sure that the user has not modified the 1719 * psl to gain improper priviledges or to cause 1720 * a machine fault. 1721 */ 1722 /* ARGSUSED */ 1723 int 1724 sys___sigreturn14(p, v, retval) 1725 struct proc *p; 1726 void *v; 1727 register_t *retval; 1728 { 1729 struct sys___sigreturn14_args /* { 1730 syscallarg(struct sigcontext *) sigcntxp; 1731 } */ *uap = v; 1732 struct sigcontext *scp, ksc; 1733 1734 /* 1735 * The trampoline code hands us the context. 1736 * It is unsafe to keep track of it ourselves, in the event that a 1737 * program jumps out of a signal handler. 1738 */ 1739 scp = SCARG(uap, sigcntxp); 1740 #ifdef DEBUG 1741 if (sigdebug & SDB_FOLLOW) 1742 printf("sigreturn: pid %d, scp %p\n", p->p_pid, scp); 1743 #endif 1744 if (ALIGN(scp) != (u_int64_t)scp) 1745 return (EINVAL); 1746 1747 if (copyin((caddr_t)scp, &ksc, sizeof(ksc)) != 0) 1748 return (EFAULT); 1749 1750 if (ksc.sc_regs[R_ZERO] != 0xACEDBADE) /* magic number */ 1751 return (EINVAL); 1752 1753 /* Restore register context. */ 1754 p->p_md.md_tf->tf_regs[FRAME_PC] = ksc.sc_pc; 1755 p->p_md.md_tf->tf_regs[FRAME_PS] = 1756 (ksc.sc_ps | ALPHA_PSL_USERSET) & ~ALPHA_PSL_USERCLR; 1757 1758 regtoframe((struct reg *)ksc.sc_regs, p->p_md.md_tf); 1759 alpha_pal_wrusp(ksc.sc_regs[R_SP]); 1760 1761 /* XXX ksc.sc_ownedfp ? */ 1762 if (p == fpcurproc) 1763 fpcurproc = NULL; 1764 bcopy((struct fpreg *)ksc.sc_fpregs, &p->p_addr->u_pcb.pcb_fp, 1765 sizeof(struct fpreg)); 1766 /* XXX ksc.sc_fp_control ? */ 1767 1768 /* Restore signal stack. */ 1769 if (ksc.sc_onstack & SS_ONSTACK) 1770 p->p_sigacts->ps_sigstk.ss_flags |= SS_ONSTACK; 1771 else 1772 p->p_sigacts->ps_sigstk.ss_flags &= ~SS_ONSTACK; 1773 1774 /* Restore signal mask. */ 1775 (void) sigprocmask1(p, SIG_SETMASK, &ksc.sc_mask, 0); 1776 1777 #ifdef DEBUG 1778 if (sigdebug & SDB_FOLLOW) 1779 printf("sigreturn(%d): returns\n", p->p_pid); 1780 #endif 1781 return (EJUSTRETURN); 1782 } 1783 1784 /* 1785 * machine dependent system variables. 1786 */ 1787 int 1788 cpu_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 1789 int *name; 1790 u_int namelen; 1791 void *oldp; 1792 size_t *oldlenp; 1793 void *newp; 1794 size_t newlen; 1795 struct proc *p; 1796 { 1797 dev_t consdev; 1798 1799 /* all sysctl names at this level are terminal */ 1800 if (namelen != 1) 1801 return (ENOTDIR); /* overloaded */ 1802 1803 switch (name[0]) { 1804 case CPU_CONSDEV: 1805 if (cn_tab != NULL) 1806 consdev = cn_tab->cn_dev; 1807 else 1808 consdev = NODEV; 1809 return (sysctl_rdstruct(oldp, oldlenp, newp, &consdev, 1810 sizeof consdev)); 1811 1812 case CPU_ROOT_DEVICE: 1813 return (sysctl_rdstring(oldp, oldlenp, newp, 1814 root_device->dv_xname)); 1815 1816 case CPU_UNALIGNED_PRINT: 1817 return (sysctl_int(oldp, oldlenp, newp, newlen, 1818 &alpha_unaligned_print)); 1819 1820 case CPU_UNALIGNED_FIX: 1821 return (sysctl_int(oldp, oldlenp, newp, newlen, 1822 &alpha_unaligned_fix)); 1823 1824 case CPU_UNALIGNED_SIGBUS: 1825 return (sysctl_int(oldp, oldlenp, newp, newlen, 1826 &alpha_unaligned_sigbus)); 1827 1828 case CPU_BOOTED_KERNEL: 1829 return (sysctl_rdstring(oldp, oldlenp, newp, 1830 bootinfo.booted_kernel)); 1831 1832 default: 1833 return (EOPNOTSUPP); 1834 } 1835 /* NOTREACHED */ 1836 } 1837 1838 /* 1839 * Set registers on exec. 1840 */ 1841 void 1842 setregs(p, pack, stack) 1843 register struct proc *p; 1844 struct exec_package *pack; 1845 u_long stack; 1846 { 1847 struct trapframe *tfp = p->p_md.md_tf; 1848 #ifdef DEBUG 1849 int i; 1850 #endif 1851 1852 #ifdef DEBUG 1853 /* 1854 * Crash and dump, if the user requested it. 1855 */ 1856 if (boothowto & RB_DUMP) 1857 panic("crash requested by boot flags"); 1858 #endif 1859 1860 #ifdef DEBUG 1861 for (i = 0; i < FRAME_SIZE; i++) 1862 tfp->tf_regs[i] = 0xbabefacedeadbeef; 1863 #else 1864 bzero(tfp->tf_regs, FRAME_SIZE * sizeof tfp->tf_regs[0]); 1865 #endif 1866 bzero(&p->p_addr->u_pcb.pcb_fp, sizeof p->p_addr->u_pcb.pcb_fp); 1867 p->p_addr->u_pcb.pcb_fp.fpr_cr = FPCR_INED 1868 | FPCR_UNFD 1869 | FPCR_UNDZ 1870 | FPCR_DYN(FP_RN) 1871 | FPCR_OVFD 1872 | FPCR_DZED 1873 | FPCR_INVD 1874 | FPCR_DNZ; 1875 alpha_pal_wrusp(stack); 1876 tfp->tf_regs[FRAME_PS] = ALPHA_PSL_USERSET; 1877 tfp->tf_regs[FRAME_PC] = pack->ep_entry & ~3; 1878 1879 tfp->tf_regs[FRAME_A0] = stack; /* a0 = sp */ 1880 tfp->tf_regs[FRAME_A1] = 0; /* a1 = rtld cleanup */ 1881 tfp->tf_regs[FRAME_A2] = 0; /* a2 = rtld object */ 1882 tfp->tf_regs[FRAME_A3] = (u_int64_t)PS_STRINGS; /* a3 = ps_strings */ 1883 tfp->tf_regs[FRAME_T12] = tfp->tf_regs[FRAME_PC]; /* a.k.a. PV */ 1884 1885 p->p_md.md_flags &= ~MDP_FPUSED; 1886 if (fpcurproc == p) 1887 fpcurproc = NULL; 1888 } 1889 1890 void 1891 netintr() 1892 { 1893 int n, s; 1894 1895 s = splhigh(); 1896 n = netisr; 1897 netisr = 0; 1898 splx(s); 1899 1900 #define DONETISR(bit, fn) \ 1901 do { \ 1902 if (n & (1 << (bit))) \ 1903 fn; \ 1904 } while (0) 1905 1906 #ifdef INET 1907 #if NARP > 0 1908 DONETISR(NETISR_ARP, arpintr()); 1909 #endif 1910 DONETISR(NETISR_IP, ipintr()); 1911 #endif 1912 #ifdef INET6 1913 DONETISR(NETISR_IPV6, ip6intr()); 1914 #endif 1915 #ifdef NETATALK 1916 DONETISR(NETISR_ATALK, atintr()); 1917 #endif 1918 #ifdef NS 1919 DONETISR(NETISR_NS, nsintr()); 1920 #endif 1921 #ifdef ISO 1922 DONETISR(NETISR_ISO, clnlintr()); 1923 #endif 1924 #ifdef CCITT 1925 DONETISR(NETISR_CCITT, ccittintr()); 1926 #endif 1927 #ifdef NATM 1928 DONETISR(NETISR_NATM, natmintr()); 1929 #endif 1930 #if NPPP > 1 1931 DONETISR(NETISR_PPP, pppintr()); 1932 #endif 1933 1934 #undef DONETISR 1935 } 1936 1937 void 1938 do_sir() 1939 { 1940 u_int64_t n; 1941 1942 while ((n = alpha_atomic_loadlatch_q(&ssir, 0)) != 0) { 1943 #define COUNT_SOFT uvmexp.softs++ 1944 1945 #define DO_SIR(bit, fn) \ 1946 do { \ 1947 if (n & (bit)) { \ 1948 COUNT_SOFT; \ 1949 fn; \ 1950 } \ 1951 } while (0) 1952 1953 DO_SIR(SIR_NET, netintr()); 1954 DO_SIR(SIR_CLOCK, softclock()); 1955 #if NCOM > 0 1956 DO_SIR(SIR_SERIAL, comsoft()); 1957 #endif 1958 1959 #undef COUNT_SOFT 1960 #undef DO_SIR 1961 } 1962 } 1963 1964 int 1965 spl0() 1966 { 1967 1968 if (ssir) { 1969 (void) alpha_pal_swpipl(ALPHA_PSL_IPL_SOFT); 1970 do_sir(); 1971 } 1972 1973 return (alpha_pal_swpipl(ALPHA_PSL_IPL_0)); 1974 } 1975 1976 /* 1977 * The following primitives manipulate the run queues. _whichqs tells which 1978 * of the 32 queues _qs have processes in them. Setrunqueue puts processes 1979 * into queues, Remrunqueue removes them from queues. The running process is 1980 * on no queue, other processes are on a queue related to p->p_priority, 1981 * divided by 4 actually to shrink the 0-127 range of priorities into the 32 1982 * available queues. 1983 */ 1984 /* 1985 * setrunqueue(p) 1986 * proc *p; 1987 * 1988 * Call should be made at splclock(), and p->p_stat should be SRUN. 1989 */ 1990 1991 void 1992 setrunqueue(p) 1993 struct proc *p; 1994 { 1995 int bit; 1996 1997 /* firewall: p->p_back must be NULL */ 1998 if (p->p_back != NULL) 1999 panic("setrunqueue"); 2000 2001 bit = p->p_priority >> 2; 2002 whichqs |= (1 << bit); 2003 p->p_forw = (struct proc *)&qs[bit]; 2004 p->p_back = qs[bit].ph_rlink; 2005 p->p_back->p_forw = p; 2006 qs[bit].ph_rlink = p; 2007 } 2008 2009 /* 2010 * remrunqueue(p) 2011 * 2012 * Call should be made at splclock(). 2013 */ 2014 void 2015 remrunqueue(p) 2016 struct proc *p; 2017 { 2018 int bit; 2019 2020 bit = p->p_priority >> 2; 2021 if ((whichqs & (1 << bit)) == 0) 2022 panic("remrunqueue"); 2023 2024 p->p_back->p_forw = p->p_forw; 2025 p->p_forw->p_back = p->p_back; 2026 p->p_back = NULL; /* for firewall checking. */ 2027 2028 if ((struct proc *)&qs[bit] == qs[bit].ph_link) 2029 whichqs &= ~(1 << bit); 2030 } 2031 2032 /* 2033 * Return the best possible estimate of the time in the timeval 2034 * to which tvp points. Unfortunately, we can't read the hardware registers. 2035 * We guarantee that the time will be greater than the value obtained by a 2036 * previous call. 2037 */ 2038 void 2039 microtime(tvp) 2040 register struct timeval *tvp; 2041 { 2042 int s = splclock(); 2043 static struct timeval lasttime; 2044 2045 *tvp = time; 2046 #ifdef notdef 2047 tvp->tv_usec += clkread(); 2048 while (tvp->tv_usec > 1000000) { 2049 tvp->tv_sec++; 2050 tvp->tv_usec -= 1000000; 2051 } 2052 #endif 2053 if (tvp->tv_sec == lasttime.tv_sec && 2054 tvp->tv_usec <= lasttime.tv_usec && 2055 (tvp->tv_usec = lasttime.tv_usec + 1) > 1000000) { 2056 tvp->tv_sec++; 2057 tvp->tv_usec -= 1000000; 2058 } 2059 lasttime = *tvp; 2060 splx(s); 2061 } 2062 2063 /* 2064 * Wait "n" microseconds. 2065 */ 2066 void 2067 delay(n) 2068 unsigned long n; 2069 { 2070 long N = cycles_per_usec * (n); 2071 2072 while (N > 0) /* XXX */ 2073 N -= 3; /* XXX */ 2074 } 2075 2076 #if defined(COMPAT_OSF1) || 1 /* XXX */ 2077 void cpu_exec_ecoff_setregs __P((struct proc *, struct exec_package *, 2078 u_long)); 2079 2080 void 2081 cpu_exec_ecoff_setregs(p, epp, stack) 2082 struct proc *p; 2083 struct exec_package *epp; 2084 u_long stack; 2085 { 2086 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2087 2088 setregs(p, epp, stack); 2089 p->p_md.md_tf->tf_regs[FRAME_GP] = execp->a.gp_value; 2090 } 2091 2092 /* 2093 * cpu_exec_ecoff_hook(): 2094 * cpu-dependent ECOFF format hook for execve(). 2095 * 2096 * Do any machine-dependent diddling of the exec package when doing ECOFF. 2097 * 2098 */ 2099 int 2100 cpu_exec_ecoff_hook(p, epp) 2101 struct proc *p; 2102 struct exec_package *epp; 2103 { 2104 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2105 extern struct emul emul_netbsd; 2106 int error; 2107 extern int osf1_exec_ecoff_hook(struct proc *p, 2108 struct exec_package *epp); 2109 2110 switch (execp->f.f_magic) { 2111 #ifdef COMPAT_OSF1 2112 case ECOFF_MAGIC_ALPHA: 2113 error = osf1_exec_ecoff_hook(p, epp); 2114 break; 2115 #endif 2116 2117 case ECOFF_MAGIC_NETBSD_ALPHA: 2118 epp->ep_emul = &emul_netbsd; 2119 error = 0; 2120 break; 2121 2122 default: 2123 error = ENOEXEC; 2124 } 2125 return (error); 2126 } 2127 #endif 2128 2129 int 2130 alpha_pa_access(pa) 2131 u_long pa; 2132 { 2133 int i; 2134 2135 for (i = 0; i < mem_cluster_cnt; i++) { 2136 if (pa < mem_clusters[i].start) 2137 continue; 2138 if ((pa - mem_clusters[i].start) >= 2139 (mem_clusters[i].size & ~PAGE_MASK)) 2140 continue; 2141 return (mem_clusters[i].size & PAGE_MASK); /* prot */ 2142 } 2143 return (PROT_NONE); 2144 } 2145 2146 /* XXX XXX BEGIN XXX XXX */ 2147 paddr_t alpha_XXX_dmamap_or; /* XXX */ 2148 /* XXX */ 2149 paddr_t /* XXX */ 2150 alpha_XXX_dmamap(v) /* XXX */ 2151 vaddr_t v; /* XXX */ 2152 { /* XXX */ 2153 /* XXX */ 2154 return (vtophys(v) | alpha_XXX_dmamap_or); /* XXX */ 2155 } /* XXX */ 2156 /* XXX XXX END XXX XXX */ 2157 2158 struct mchkinfo * 2159 cpu_mchkinfo() 2160 { 2161 if (mchkinfo_all_cpus == NULL) 2162 return &startup_info; 2163 return mchkinfo_all_cpus + alpha_pal_whami(); 2164 } 2165 2166 char * 2167 dot_conv(x) 2168 unsigned long x; 2169 { 2170 int i; 2171 char *xc; 2172 static int next; 2173 static char space[2][20]; 2174 2175 xc = space[next ^= 1] + sizeof space[0]; 2176 *--xc = '\0'; 2177 for (i = 0;; ++i) { 2178 if (i && (i & 3) == 0) 2179 *--xc = '.'; 2180 *--xc = "0123456789abcdef"[x & 0xf]; 2181 x >>= 4; 2182 if (x == 0) 2183 break; 2184 } 2185 return xc; 2186 } 2187
Indexes created Wed Oct 01 19:09:53 GMT 2025