machdep.c revision 1.200
1 /* $NetBSD: machdep.c,v 1.200 2000/03/23 01:04:10 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center and by Chris G. Demetriou. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /* 41 * Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University. 42 * All rights reserved. 43 * 44 * Author: Chris G. Demetriou 45 * 46 * Permission to use, copy, modify and distribute this software and 47 * its documentation is hereby granted, provided that both the copyright 48 * notice and this permission notice appear in all copies of the 49 * software, derivative works or modified versions, and any portions 50 * thereof, and that both notices appear in supporting documentation. 51 * 52 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 53 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 54 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 55 * 56 * Carnegie Mellon requests users of this software to return to 57 * 58 * Software Distribution Coordinator or Software.Distribution (at) CS.CMU.EDU 59 * School of Computer Science 60 * Carnegie Mellon University 61 * Pittsburgh PA 15213-3890 62 * 63 * any improvements or extensions that they make and grant Carnegie the 64 * rights to redistribute these changes. 65 */ 66 67 #include "opt_ddb.h" 68 #include "opt_multiprocessor.h" 69 #include "opt_dec_3000_300.h" 70 #include "opt_dec_3000_500.h" 71 #include "opt_compat_osf1.h" 72 #include "opt_compat_netbsd.h" 73 #include "opt_inet.h" 74 #include "opt_atalk.h" 75 #include "opt_ccitt.h" 76 #include "opt_iso.h" 77 #include "opt_ns.h" 78 #include "opt_natm.h" 79 80 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 81 82 __KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.200 2000/03/23 01:04:10 thorpej Exp $"); 83 84 #include <sys/param.h> 85 #include <sys/systm.h> 86 #include <sys/signalvar.h> 87 #include <sys/kernel.h> 88 #include <sys/map.h> 89 #include <sys/proc.h> 90 #include <sys/buf.h> 91 #include <sys/reboot.h> 92 #include <sys/device.h> 93 #include <sys/file.h> 94 #include <sys/malloc.h> 95 #include <sys/mbuf.h> 96 #include <sys/mman.h> 97 #include <sys/msgbuf.h> 98 #include <sys/ioctl.h> 99 #include <sys/tty.h> 100 #include <sys/user.h> 101 #include <sys/exec.h> 102 #include <sys/exec_ecoff.h> 103 #include <vm/vm.h> 104 #include <sys/sysctl.h> 105 #include <sys/core.h> 106 #include <sys/kcore.h> 107 #include <machine/kcore.h> 108 109 #include <sys/mount.h> 110 #include <sys/syscallargs.h> 111 112 #include <vm/vm_kern.h> 113 114 #include <uvm/uvm_extern.h> 115 116 #include <dev/cons.h> 117 118 #include <machine/autoconf.h> 119 #include <machine/cpu.h> 120 #include <machine/reg.h> 121 #include <machine/rpb.h> 122 #include <machine/prom.h> 123 #include <machine/conf.h> 124 #include <machine/ieeefp.h> 125 126 #include <net/netisr.h> 127 #include <net/if.h> 128 129 #ifdef INET 130 #include <net/route.h> 131 #include <netinet/in.h> 132 #include <netinet/ip_var.h> 133 #include "arp.h" 134 #if NARP > 0 135 #include <netinet/if_inarp.h> 136 #endif 137 #endif 138 #ifdef INET6 139 # ifndef INET 140 # include <netinet/in.h> 141 # endif 142 #include <netinet/ip6.h> 143 #include <netinet6/ip6_var.h> 144 #endif 145 #ifdef NS 146 #include <netns/ns_var.h> 147 #endif 148 #ifdef ISO 149 #include <netiso/iso.h> 150 #include <netiso/clnp.h> 151 #endif 152 #ifdef CCITT 153 #include <netccitt/x25.h> 154 #include <netccitt/pk.h> 155 #include <netccitt/pk_extern.h> 156 #endif 157 #ifdef NATM 158 #include <netnatm/natm.h> 159 #endif 160 #ifdef NETATALK 161 #include <netatalk/at_extern.h> 162 #endif 163 #include "ppp.h" 164 #if NPPP > 0 165 #include <net/ppp_defs.h> 166 #include <net/if_ppp.h> 167 #endif 168 169 #ifdef DDB 170 #include <machine/db_machdep.h> 171 #include <ddb/db_access.h> 172 #include <ddb/db_sym.h> 173 #include <ddb/db_extern.h> 174 #include <ddb/db_interface.h> 175 #endif 176 177 #include <machine/alpha.h> 178 #include <machine/intrcnt.h> 179 180 #include "com.h" 181 #if NCOM > 0 182 extern void comsoft __P((void)); 183 #endif 184 #include "zsc_ioasic.h" 185 #if NZSC_IOASIC > 0 186 extern void zs_ioasic_softintr __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 #if !defined(MULTIPROCESSOR) 225 /* A single machine check info structure for single CPU configurations. */ 226 struct mchkinfo mchkinfo_store; 227 #endif 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_phys_size = _VM_PHYS_SIZE; 239 240 #ifdef DDB 241 /* start and end of kernel symbol table */ 242 void *ksym_start, *ksym_end; 243 #endif 244 245 /* for cpu_sysctl() */ 246 int alpha_unaligned_print = 1; /* warn about unaligned accesses */ 247 int alpha_unaligned_fix = 1; /* fix up unaligned accesses */ 248 int alpha_unaligned_sigbus = 0; /* don't SIGBUS on fixed-up accesses */ 249 250 /* 251 * XXX This should be dynamically sized, but we have the chicken-egg problem! 252 * XXX it should also be larger than it is, because not all of the mddt 253 * XXX clusters end up being used for VM. 254 */ 255 phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX]; /* low size bits overloaded */ 256 int mem_cluster_cnt; 257 258 int cpu_dump __P((void)); 259 int cpu_dumpsize __P((void)); 260 u_long cpu_dump_mempagecnt __P((void)); 261 void dumpsys __P((void)); 262 void identifycpu __P((void)); 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 #if defined(MULTIPROCESSOR) 298 /* 299 * Set our SysValue to the address of our cpu_info structure. 300 * Secondary processors do this in their spinup trampoline. 301 */ 302 alpha_pal_wrval((u_long)&cpu_info[alpha_pal_whami()]); 303 #endif 304 305 /* 306 * Get critical system information (if possible, from the 307 * information provided by the boot program). 308 */ 309 bootinfo_msg = NULL; 310 if (bim == BOOTINFO_MAGIC) { 311 if (biv == 0) { /* backward compat */ 312 biv = *(u_long *)bip; 313 bip += 8; 314 } 315 switch (biv) { 316 case 1: { 317 struct bootinfo_v1 *v1p = (struct bootinfo_v1 *)bip; 318 319 bootinfo.ssym = v1p->ssym; 320 bootinfo.esym = v1p->esym; 321 /* hwrpb may not be provided by boot block in v1 */ 322 if (v1p->hwrpb != NULL) { 323 bootinfo.hwrpb_phys = 324 ((struct rpb *)v1p->hwrpb)->rpb_phys; 325 bootinfo.hwrpb_size = v1p->hwrpbsize; 326 } else { 327 bootinfo.hwrpb_phys = 328 ((struct rpb *)HWRPB_ADDR)->rpb_phys; 329 bootinfo.hwrpb_size = 330 ((struct rpb *)HWRPB_ADDR)->rpb_size; 331 } 332 bcopy(v1p->boot_flags, bootinfo.boot_flags, 333 min(sizeof v1p->boot_flags, 334 sizeof bootinfo.boot_flags)); 335 bcopy(v1p->booted_kernel, bootinfo.booted_kernel, 336 min(sizeof v1p->booted_kernel, 337 sizeof bootinfo.booted_kernel)); 338 /* booted dev not provided in bootinfo */ 339 init_prom_interface((struct rpb *) 340 ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys)); 341 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 342 sizeof bootinfo.booted_dev); 343 break; 344 } 345 default: 346 bootinfo_msg = "unknown bootinfo version"; 347 goto nobootinfo; 348 } 349 } else { 350 bootinfo_msg = "boot program did not pass bootinfo"; 351 nobootinfo: 352 bootinfo.ssym = (u_long)_end; 353 bootinfo.esym = (u_long)_end; 354 bootinfo.hwrpb_phys = ((struct rpb *)HWRPB_ADDR)->rpb_phys; 355 bootinfo.hwrpb_size = ((struct rpb *)HWRPB_ADDR)->rpb_size; 356 init_prom_interface((struct rpb *)HWRPB_ADDR); 357 prom_getenv(PROM_E_BOOTED_OSFLAGS, bootinfo.boot_flags, 358 sizeof bootinfo.boot_flags); 359 prom_getenv(PROM_E_BOOTED_FILE, bootinfo.booted_kernel, 360 sizeof bootinfo.booted_kernel); 361 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 362 sizeof bootinfo.booted_dev); 363 } 364 365 /* 366 * Initialize the kernel's mapping of the RPB. It's needed for 367 * lots of things. 368 */ 369 hwrpb = (struct rpb *)ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys); 370 371 #if defined(DEC_3000_300) || defined(DEC_3000_500) 372 if (hwrpb->rpb_type == ST_DEC_3000_300 || 373 hwrpb->rpb_type == ST_DEC_3000_500) { 374 prom_getenv(PROM_E_SCSIID, dec_3000_scsiid, 375 sizeof(dec_3000_scsiid)); 376 prom_getenv(PROM_E_SCSIFAST, dec_3000_scsifast, 377 sizeof(dec_3000_scsifast)); 378 } 379 #endif 380 381 /* 382 * Remember how many cycles there are per microsecond, 383 * so that we can use delay(). Round up, for safety. 384 */ 385 cycles_per_usec = (hwrpb->rpb_cc_freq + 999999) / 1000000; 386 387 /* 388 * Initalize the (temporary) bootstrap console interface, so 389 * we can use printf until the VM system starts being setup. 390 * The real console is initialized before then. 391 */ 392 init_bootstrap_console(); 393 394 /* OUTPUT NOW ALLOWED */ 395 396 /* delayed from above */ 397 if (bootinfo_msg) 398 printf("WARNING: %s (0x%lx, 0x%lx, 0x%lx)\n", 399 bootinfo_msg, bim, bip, biv); 400 401 /* Initialize the trap vectors on the primary processor. */ 402 trap_init(); 403 404 /* 405 * Find out what hardware we're on, and do basic initialization. 406 */ 407 cputype = hwrpb->rpb_type; 408 if (cputype < 0) { 409 /* 410 * At least some white-box systems have SRM which 411 * reports a systype that's the negative of their 412 * blue-box counterpart. 413 */ 414 cputype = -cputype; 415 } 416 if (cputype >= ncpuinit) { 417 platform_not_supported(); 418 /* NOTREACHED */ 419 } 420 (*cpuinit[cputype].init)(); 421 strcpy(cpu_model, platform.model); 422 423 /* 424 * Initalize the real console, so that the bootstrap console is 425 * no longer necessary. 426 */ 427 (*platform.cons_init)(); 428 429 #ifdef DIAGNOSTIC 430 /* Paranoid sanity checking */ 431 432 /* We should always be running on the primary. */ 433 assert(hwrpb->rpb_primary_cpu_id == alpha_pal_whami()); 434 435 /* 436 * On single-CPU systypes, the primary should always be CPU 0, 437 * except on Alpha 8200 systems where the CPU id is related 438 * to the VID, which is related to the Turbo Laser node id. 439 */ 440 if (cputype != ST_DEC_21000) 441 assert(hwrpb->rpb_primary_cpu_id == 0); 442 #endif 443 444 /* NO MORE FIRMWARE ACCESS ALLOWED */ 445 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 446 /* 447 * XXX (unless _PMAP_MAY_USE_PROM_CONSOLE is defined and 448 * XXX pmap_uses_prom_console() evaluates to non-zero.) 449 */ 450 #endif 451 452 /* 453 * find out this system's page size 454 */ 455 PAGE_SIZE = hwrpb->rpb_page_size; 456 if (PAGE_SIZE != 8192) 457 panic("page size %d != 8192?!", PAGE_SIZE); 458 459 /* 460 * Initialize PAGE_SIZE-dependent variables. 461 */ 462 uvm_setpagesize(); 463 464 /* 465 * Find the beginning and end of the kernel (and leave a 466 * bit of space before the beginning for the bootstrap 467 * stack). 468 */ 469 kernstart = trunc_page(kernel_text) - 2 * PAGE_SIZE; 470 #ifdef DDB 471 ksym_start = (void *)bootinfo.ssym; 472 ksym_end = (void *)bootinfo.esym; 473 kernend = (vaddr_t)round_page(ksym_end); 474 #else 475 kernend = (vaddr_t)round_page(_end); 476 #endif 477 478 kernstartpfn = atop(ALPHA_K0SEG_TO_PHYS(kernstart)); 479 kernendpfn = atop(ALPHA_K0SEG_TO_PHYS(kernend)); 480 481 /* 482 * Find out how much memory is available, by looking at 483 * the memory cluster descriptors. This also tries to do 484 * its best to detect things things that have never been seen 485 * before... 486 */ 487 mddtp = (struct mddt *)(((caddr_t)hwrpb) + hwrpb->rpb_memdat_off); 488 489 /* MDDT SANITY CHECKING */ 490 mddtweird = 0; 491 if (mddtp->mddt_cluster_cnt < 2) { 492 mddtweird = 1; 493 printf("WARNING: weird number of mem clusters: %lu\n", 494 mddtp->mddt_cluster_cnt); 495 } 496 497 #if 0 498 printf("Memory cluster count: %d\n", mddtp->mddt_cluster_cnt); 499 #endif 500 501 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 502 memc = &mddtp->mddt_clusters[i]; 503 #if 0 504 printf("MEMC %d: pfn 0x%lx cnt 0x%lx usage 0x%lx\n", i, 505 memc->mddt_pfn, memc->mddt_pg_cnt, memc->mddt_usage); 506 #endif 507 totalphysmem += memc->mddt_pg_cnt; 508 if (mem_cluster_cnt < VM_PHYSSEG_MAX) { /* XXX */ 509 mem_clusters[mem_cluster_cnt].start = 510 ptoa(memc->mddt_pfn); 511 mem_clusters[mem_cluster_cnt].size = 512 ptoa(memc->mddt_pg_cnt); 513 if (memc->mddt_usage & MDDT_mbz || 514 memc->mddt_usage & MDDT_NONVOLATILE || /* XXX */ 515 memc->mddt_usage & MDDT_PALCODE) 516 mem_clusters[mem_cluster_cnt].size |= 517 PROT_READ; 518 else 519 mem_clusters[mem_cluster_cnt].size |= 520 PROT_READ | PROT_WRITE | PROT_EXEC; 521 mem_cluster_cnt++; 522 } 523 524 if (memc->mddt_usage & MDDT_mbz) { 525 mddtweird = 1; 526 printf("WARNING: mem cluster %d has weird " 527 "usage 0x%lx\n", i, memc->mddt_usage); 528 unknownmem += memc->mddt_pg_cnt; 529 continue; 530 } 531 if (memc->mddt_usage & MDDT_NONVOLATILE) { 532 /* XXX should handle these... */ 533 printf("WARNING: skipping non-volatile mem " 534 "cluster %d\n", i); 535 unusedmem += memc->mddt_pg_cnt; 536 continue; 537 } 538 if (memc->mddt_usage & MDDT_PALCODE) { 539 resvmem += memc->mddt_pg_cnt; 540 continue; 541 } 542 543 /* 544 * We have a memory cluster available for system 545 * software use. We must determine if this cluster 546 * holds the kernel. 547 */ 548 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 549 /* 550 * XXX If the kernel uses the PROM console, we only use the 551 * XXX memory after the kernel in the first system segment, 552 * XXX to avoid clobbering prom mapping, data, etc. 553 */ 554 if (!pmap_uses_prom_console() || physmem == 0) { 555 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 556 physmem += memc->mddt_pg_cnt; 557 pfn0 = memc->mddt_pfn; 558 pfn1 = memc->mddt_pfn + memc->mddt_pg_cnt; 559 if (pfn0 <= kernstartpfn && kernendpfn <= pfn1) { 560 /* 561 * Must compute the location of the kernel 562 * within the segment. 563 */ 564 #if 0 565 printf("Cluster %d contains kernel\n", i); 566 #endif 567 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 568 if (!pmap_uses_prom_console()) { 569 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 570 if (pfn0 < kernstartpfn) { 571 /* 572 * There is a chunk before the kernel. 573 */ 574 #if 0 575 printf("Loading chunk before kernel: " 576 "0x%lx / 0x%lx\n", pfn0, kernstartpfn); 577 #endif 578 uvm_page_physload(pfn0, kernstartpfn, 579 pfn0, kernstartpfn, VM_FREELIST_DEFAULT); 580 } 581 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 582 } 583 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 584 if (kernendpfn < pfn1) { 585 /* 586 * There is a chunk after the kernel. 587 */ 588 #if 0 589 printf("Loading chunk after kernel: " 590 "0x%lx / 0x%lx\n", kernendpfn, pfn1); 591 #endif 592 uvm_page_physload(kernendpfn, pfn1, 593 kernendpfn, pfn1, VM_FREELIST_DEFAULT); 594 } 595 } else { 596 /* 597 * Just load this cluster as one chunk. 598 */ 599 #if 0 600 printf("Loading cluster %d: 0x%lx / 0x%lx\n", i, 601 pfn0, pfn1); 602 #endif 603 uvm_page_physload(pfn0, pfn1, pfn0, pfn1, 604 VM_FREELIST_DEFAULT); 605 } 606 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 607 } 608 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 609 } 610 611 /* 612 * Dump out the MDDT if it looks odd... 613 */ 614 if (mddtweird) { 615 printf("\n"); 616 printf("complete memory cluster information:\n"); 617 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 618 printf("mddt %d:\n", i); 619 printf("\tpfn %lx\n", 620 mddtp->mddt_clusters[i].mddt_pfn); 621 printf("\tcnt %lx\n", 622 mddtp->mddt_clusters[i].mddt_pg_cnt); 623 printf("\ttest %lx\n", 624 mddtp->mddt_clusters[i].mddt_pg_test); 625 printf("\tbva %lx\n", 626 mddtp->mddt_clusters[i].mddt_v_bitaddr); 627 printf("\tbpa %lx\n", 628 mddtp->mddt_clusters[i].mddt_p_bitaddr); 629 printf("\tbcksum %lx\n", 630 mddtp->mddt_clusters[i].mddt_bit_cksum); 631 printf("\tusage %lx\n", 632 mddtp->mddt_clusters[i].mddt_usage); 633 } 634 printf("\n"); 635 } 636 637 if (totalphysmem == 0) 638 panic("can't happen: system seems to have no memory!"); 639 maxmem = physmem; 640 #if 0 641 printf("totalphysmem = %d\n", totalphysmem); 642 printf("physmem = %d\n", physmem); 643 printf("resvmem = %d\n", resvmem); 644 printf("unusedmem = %d\n", unusedmem); 645 printf("unknownmem = %d\n", unknownmem); 646 #endif 647 648 /* 649 * Adjust some parameters if the amount of physmem 650 * available would cause us to croak. This is completely 651 * eyeballed and isn't meant to be the final answer. 652 * vm_phys_size is probably the only one to really worry 653 * about. 654 * 655 * It's for booting a GENERIC kernel on a large memory platform. 656 */ 657 if (physmem >= atop(128 * 1024 * 1024)) 658 vm_phys_size <<= 2; 659 660 /* 661 * Initialize error message buffer (at end of core). 662 */ 663 { 664 size_t sz = round_page(MSGBUFSIZE); 665 666 vps = &vm_physmem[vm_nphysseg - 1]; 667 668 /* shrink so that it'll fit in the last segment */ 669 if ((vps->avail_end - vps->avail_start) < atop(sz)) 670 sz = ptoa(vps->avail_end - vps->avail_start); 671 672 vps->end -= atop(sz); 673 vps->avail_end -= atop(sz); 674 msgbufaddr = (caddr_t) ALPHA_PHYS_TO_K0SEG(ptoa(vps->end)); 675 initmsgbuf(msgbufaddr, sz); 676 677 /* Remove the last segment if it now has no pages. */ 678 if (vps->start == vps->end) 679 vm_nphysseg--; 680 681 /* warn if the message buffer had to be shrunk */ 682 if (sz != round_page(MSGBUFSIZE)) 683 printf("WARNING: %ld bytes not available for msgbuf in last cluster (%ld used)\n", 684 round_page(MSGBUFSIZE), sz); 685 686 } 687 688 /* 689 * Init mapping for u page(s) for proc 0 690 */ 691 proc0.p_addr = proc0paddr = 692 (struct user *)pmap_steal_memory(UPAGES * PAGE_SIZE, NULL, NULL); 693 694 /* 695 * Allocate space for system data structures. These data structures 696 * are allocated here instead of cpu_startup() because physical 697 * memory is directly addressable. We don't have to map these into 698 * virtual address space. 699 */ 700 size = (vsize_t)allocsys(NULL, NULL); 701 v = (caddr_t)pmap_steal_memory(size, NULL, NULL); 702 if ((allocsys(v, NULL) - v) != size) 703 panic("alpha_init: table size inconsistency"); 704 705 /* 706 * Initialize the virtual memory system, and set the 707 * page table base register in proc 0's PCB. 708 */ 709 pmap_bootstrap(ALPHA_PHYS_TO_K0SEG(ptb << PGSHIFT), 710 hwrpb->rpb_max_asn, hwrpb->rpb_pcs_cnt); 711 712 /* 713 * Initialize the rest of proc 0's PCB, and cache its physical 714 * address. 715 */ 716 proc0.p_md.md_pcbpaddr = 717 (struct pcb *)ALPHA_K0SEG_TO_PHYS((vaddr_t)&proc0paddr->u_pcb); 718 719 /* 720 * Set the kernel sp, reserving space for an (empty) trapframe, 721 * and make proc0's trapframe pointer point to it for sanity. 722 */ 723 proc0paddr->u_pcb.pcb_hw.apcb_ksp = 724 (u_int64_t)proc0paddr + USPACE - sizeof(struct trapframe); 725 proc0.p_md.md_tf = 726 (struct trapframe *)proc0paddr->u_pcb.pcb_hw.apcb_ksp; 727 728 #if defined(MULTIPROCESSOR) 729 /* 730 * Initialize the primary CPU's idle PCB to proc0's, until 731 * autoconfiguration runs (it will get its own idle PCB there). 732 */ 733 curcpu()->ci_idle_pcb = &proc0paddr->u_pcb; 734 curcpu()->ci_idle_pcb_paddr = (u_long)proc0.p_md.md_pcbpaddr; 735 #endif 736 737 /* 738 * Look at arguments passed to us and compute boothowto. 739 */ 740 741 boothowto = RB_SINGLE; 742 #ifdef KADB 743 boothowto |= RB_KDB; 744 #endif 745 for (p = bootinfo.boot_flags; p && *p != '\0'; p++) { 746 /* 747 * Note that we'd really like to differentiate case here, 748 * but the Alpha AXP Architecture Reference Manual 749 * says that we shouldn't. 750 */ 751 switch (*p) { 752 case 'a': /* autoboot */ 753 case 'A': 754 boothowto &= ~RB_SINGLE; 755 break; 756 757 #ifdef DEBUG 758 case 'c': /* crash dump immediately after autoconfig */ 759 case 'C': 760 boothowto |= RB_DUMP; 761 break; 762 #endif 763 764 #if defined(KGDB) || defined(DDB) 765 case 'd': /* break into the kernel debugger ASAP */ 766 case 'D': 767 boothowto |= RB_KDB; 768 break; 769 #endif 770 771 case 'h': /* always halt, never reboot */ 772 case 'H': 773 boothowto |= RB_HALT; 774 break; 775 776 #if 0 777 case 'm': /* mini root present in memory */ 778 case 'M': 779 boothowto |= RB_MINIROOT; 780 break; 781 #endif 782 783 case 'n': /* askname */ 784 case 'N': 785 boothowto |= RB_ASKNAME; 786 break; 787 788 case 's': /* single-user (default, supported for sanity) */ 789 case 'S': 790 boothowto |= RB_SINGLE; 791 break; 792 793 case '-': 794 /* 795 * Just ignore this. It's not required, but it's 796 * common for it to be passed regardless. 797 */ 798 break; 799 800 default: 801 printf("Unrecognized boot flag '%c'.\n", *p); 802 break; 803 } 804 } 805 806 807 /* 808 * Figure out the number of cpus in the box, from RPB fields. 809 * Really. We mean it. 810 */ 811 for (i = 0; i < hwrpb->rpb_pcs_cnt; i++) { 812 struct pcs *pcsp; 813 814 pcsp = LOCATE_PCS(hwrpb, i); 815 if ((pcsp->pcs_flags & PCS_PP) != 0) 816 ncpus++; 817 } 818 819 /* 820 * Initialize debuggers, and break into them if appropriate. 821 */ 822 #ifdef DDB 823 db_machine_init(); 824 ddb_init((int)((u_int64_t)ksym_end - (u_int64_t)ksym_start), 825 ksym_start, ksym_end); 826 if (boothowto & RB_KDB) 827 Debugger(); 828 #endif 829 #ifdef KGDB 830 if (boothowto & RB_KDB) 831 kgdb_connect(0); 832 #endif 833 /* 834 * Figure out our clock frequency, from RPB fields. 835 */ 836 hz = hwrpb->rpb_intr_freq >> 12; 837 if (!(60 <= hz && hz <= 10240)) { 838 hz = 1024; 839 #ifdef DIAGNOSTIC 840 printf("WARNING: unbelievable rpb_intr_freq: %ld (%d hz)\n", 841 hwrpb->rpb_intr_freq, hz); 842 #endif 843 } 844 } 845 846 void 847 consinit() 848 { 849 850 /* 851 * Everything related to console initialization is done 852 * in alpha_init(). 853 */ 854 #if defined(DIAGNOSTIC) && defined(_PMAP_MAY_USE_PROM_CONSOLE) 855 printf("consinit: %susing prom console\n", 856 pmap_uses_prom_console() ? "" : "not "); 857 #endif 858 } 859 860 #include "pckbc.h" 861 #include "pckbd.h" 862 #if (NPCKBC > 0) && (NPCKBD == 0) 863 864 #include <dev/ic/pckbcvar.h> 865 866 /* 867 * This is called by the pbkbc driver if no pckbd is configured. 868 * On the i386, it is used to glue in the old, deprecated console 869 * code. On the Alpha, it does nothing. 870 */ 871 int 872 pckbc_machdep_cnattach(kbctag, kbcslot) 873 pckbc_tag_t kbctag; 874 pckbc_slot_t kbcslot; 875 { 876 877 return (ENXIO); 878 } 879 #endif /* NPCKBC > 0 && NPCKBD == 0 */ 880 881 void 882 cpu_startup() 883 { 884 register unsigned i; 885 int base, residual; 886 vaddr_t minaddr, maxaddr; 887 vsize_t size; 888 char pbuf[9]; 889 #if defined(DEBUG) 890 extern int pmapdebug; 891 int opmapdebug = pmapdebug; 892 893 pmapdebug = 0; 894 #endif 895 896 /* 897 * Good {morning,afternoon,evening,night}. 898 */ 899 printf(version); 900 identifycpu(); 901 format_bytes(pbuf, sizeof(pbuf), ptoa(totalphysmem)); 902 printf("total memory = %s\n", pbuf); 903 format_bytes(pbuf, sizeof(pbuf), ptoa(resvmem)); 904 printf("(%s reserved for PROM, ", pbuf); 905 format_bytes(pbuf, sizeof(pbuf), ptoa(physmem)); 906 printf("%s used by NetBSD)\n", pbuf); 907 if (unusedmem) { 908 format_bytes(pbuf, sizeof(pbuf), ptoa(unusedmem)); 909 printf("WARNING: unused memory = %s\n", pbuf); 910 } 911 if (unknownmem) { 912 format_bytes(pbuf, sizeof(pbuf), ptoa(unknownmem)); 913 printf("WARNING: %s of memory with unknown purpose\n", pbuf); 914 } 915 916 /* 917 * Allocate virtual address space for file I/O buffers. 918 * Note they are different than the array of headers, 'buf', 919 * and usually occupy more virtual memory than physical. 920 */ 921 size = MAXBSIZE * nbuf; 922 if (uvm_map(kernel_map, (vaddr_t *) &buffers, round_page(size), 923 NULL, UVM_UNKNOWN_OFFSET, 924 UVM_MAPFLAG(UVM_PROT_NONE, UVM_PROT_NONE, UVM_INH_NONE, 925 UVM_ADV_NORMAL, 0)) != KERN_SUCCESS) 926 panic("startup: cannot allocate VM for buffers"); 927 base = bufpages / nbuf; 928 residual = bufpages % nbuf; 929 for (i = 0; i < nbuf; i++) { 930 vsize_t curbufsize; 931 vaddr_t curbuf; 932 struct vm_page *pg; 933 934 /* 935 * Each buffer has MAXBSIZE bytes of VM space allocated. Of 936 * that MAXBSIZE space, we allocate and map (base+1) pages 937 * for the first "residual" buffers, and then we allocate 938 * "base" pages for the rest. 939 */ 940 curbuf = (vaddr_t) buffers + (i * MAXBSIZE); 941 curbufsize = NBPG * ((i < residual) ? (base+1) : base); 942 943 while (curbufsize) { 944 pg = uvm_pagealloc(NULL, 0, NULL, 0); 945 if (pg == NULL) 946 panic("cpu_startup: not enough memory for " 947 "buffer cache"); 948 pmap_kenter_pa(curbuf, VM_PAGE_TO_PHYS(pg), 949 VM_PROT_READ|VM_PROT_WRITE); 950 curbuf += PAGE_SIZE; 951 curbufsize -= PAGE_SIZE; 952 } 953 } 954 /* 955 * Allocate a submap for exec arguments. This map effectively 956 * limits the number of processes exec'ing at any time. 957 */ 958 exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 959 16 * NCARGS, VM_MAP_PAGEABLE, FALSE, NULL); 960 961 /* 962 * Allocate a submap for physio 963 */ 964 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 965 VM_PHYS_SIZE, 0, FALSE, NULL); 966 967 /* 968 * No need to allocate an mbuf cluster submap. Mbuf clusters 969 * are allocated via the pool allocator, and we use K0SEG to 970 * map those pages. 971 */ 972 973 #if defined(DEBUG) 974 pmapdebug = opmapdebug; 975 #endif 976 format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 977 printf("avail memory = %s\n", pbuf); 978 #if 0 979 { 980 extern u_long pmap_pages_stolen; 981 982 format_bytes(pbuf, sizeof(pbuf), pmap_pages_stolen * PAGE_SIZE); 983 printf("stolen memory for VM structures = %s\n", pbuf); 984 } 985 #endif 986 format_bytes(pbuf, sizeof(pbuf), bufpages * NBPG); 987 printf("using %ld buffers containing %s of memory\n", (long)nbuf, pbuf); 988 989 /* 990 * Set up buffers, so they can be used to read disk labels. 991 */ 992 bufinit(); 993 994 /* 995 * Set up the HWPCB so that it's safe to configure secondary 996 * CPUs. 997 */ 998 hwrpb_primary_init(); 999 } 1000 1001 /* 1002 * Retrieve the platform name from the DSR. 1003 */ 1004 const char * 1005 alpha_dsr_sysname() 1006 { 1007 struct dsrdb *dsr; 1008 const char *sysname; 1009 1010 /* 1011 * DSR does not exist on early HWRPB versions. 1012 */ 1013 if (hwrpb->rpb_version < HWRPB_DSRDB_MINVERS) 1014 return (NULL); 1015 1016 dsr = (struct dsrdb *)(((caddr_t)hwrpb) + hwrpb->rpb_dsrdb_off); 1017 sysname = (const char *)((caddr_t)dsr + (dsr->dsr_sysname_off + 1018 sizeof(u_int64_t))); 1019 return (sysname); 1020 } 1021 1022 /* 1023 * Lookup the system specified system variation in the provided table, 1024 * returning the model string on match. 1025 */ 1026 const char * 1027 alpha_variation_name(variation, avtp) 1028 u_int64_t variation; 1029 const struct alpha_variation_table *avtp; 1030 { 1031 int i; 1032 1033 for (i = 0; avtp[i].avt_model != NULL; i++) 1034 if (avtp[i].avt_variation == variation) 1035 return (avtp[i].avt_model); 1036 return (NULL); 1037 } 1038 1039 /* 1040 * Generate a default platform name based for unknown system variations. 1041 */ 1042 const char * 1043 alpha_unknown_sysname() 1044 { 1045 static char s[128]; /* safe size */ 1046 1047 sprintf(s, "%s family, unknown model variation 0x%lx", 1048 platform.family, hwrpb->rpb_variation & SV_ST_MASK); 1049 return ((const char *)s); 1050 } 1051 1052 void 1053 identifycpu() 1054 { 1055 char *s; 1056 1057 /* 1058 * print out CPU identification information. 1059 */ 1060 printf("%s", cpu_model); 1061 for(s = cpu_model; *s; ++s) 1062 if(strncasecmp(s, "MHz", 3) == 0) 1063 goto skipMHz; 1064 printf(", %ldMHz", hwrpb->rpb_cc_freq / 1000000); 1065 skipMHz: 1066 printf("\n"); 1067 printf("%ld byte page size, %d processor%s.\n", 1068 hwrpb->rpb_page_size, ncpus, ncpus == 1 ? "" : "s"); 1069 #if 0 1070 /* this isn't defined for any systems that we run on? */ 1071 printf("serial number 0x%lx 0x%lx\n", 1072 ((long *)hwrpb->rpb_ssn)[0], ((long *)hwrpb->rpb_ssn)[1]); 1073 1074 /* and these aren't particularly useful! */ 1075 printf("variation: 0x%lx, revision 0x%lx\n", 1076 hwrpb->rpb_variation, *(long *)hwrpb->rpb_revision); 1077 #endif 1078 } 1079 1080 int waittime = -1; 1081 struct pcb dumppcb; 1082 1083 void 1084 cpu_reboot(howto, bootstr) 1085 int howto; 1086 char *bootstr; 1087 { 1088 #if defined(MULTIPROCESSOR) 1089 #if 0 /* XXX See below. */ 1090 u_long cpu_id; 1091 #endif 1092 #endif 1093 1094 #if defined(MULTIPROCESSOR) 1095 /* We must be running on the primary CPU. */ 1096 if (alpha_pal_whami() != hwrpb->rpb_primary_cpu_id) 1097 panic("cpu_reboot: not on primary CPU!"); 1098 #endif 1099 1100 /* If system is cold, just halt. */ 1101 if (cold) { 1102 howto |= RB_HALT; 1103 goto haltsys; 1104 } 1105 1106 /* If "always halt" was specified as a boot flag, obey. */ 1107 if ((boothowto & RB_HALT) != 0) 1108 howto |= RB_HALT; 1109 1110 boothowto = howto; 1111 if ((howto & RB_NOSYNC) == 0 && waittime < 0) { 1112 waittime = 0; 1113 vfs_shutdown(); 1114 /* 1115 * If we've been adjusting the clock, the todr 1116 * will be out of synch; adjust it now. 1117 */ 1118 resettodr(); 1119 } 1120 1121 /* Disable interrupts. */ 1122 splhigh(); 1123 1124 /* If rebooting and a dump is requested do it. */ 1125 #if 0 1126 if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP) 1127 #else 1128 if (howto & RB_DUMP) 1129 #endif 1130 dumpsys(); 1131 1132 haltsys: 1133 1134 /* run any shutdown hooks */ 1135 doshutdownhooks(); 1136 1137 #if defined(MULTIPROCESSOR) 1138 #if 0 /* XXX doesn't work when called from here?! */ 1139 /* Kill off any secondary CPUs. */ 1140 for (cpu_id = 0; cpu_id < hwrpb->rpb_pcs_cnt; cpu_id++) { 1141 if (cpu_id == hwrpb->rpb_primary_cpu_id || 1142 cpu_info[cpu_id].ci_softc == NULL) 1143 continue; 1144 cpu_halt_secondary(cpu_id); 1145 } 1146 #endif 1147 #endif 1148 1149 #ifdef BOOTKEY 1150 printf("hit any key to %s...\n", howto & RB_HALT ? "halt" : "reboot"); 1151 cnpollc(1); /* for proper keyboard command handling */ 1152 cngetc(); 1153 cnpollc(0); 1154 printf("\n"); 1155 #endif 1156 1157 /* Finally, powerdown/halt/reboot the system. */ 1158 if ((howto & RB_POWERDOWN) == RB_POWERDOWN && 1159 platform.powerdown != NULL) { 1160 (*platform.powerdown)(); 1161 printf("WARNING: powerdown failed!\n"); 1162 } 1163 printf("%s\n\n", howto & RB_HALT ? "halted." : "rebooting..."); 1164 prom_halt(howto & RB_HALT); 1165 /*NOTREACHED*/ 1166 } 1167 1168 /* 1169 * These variables are needed by /sbin/savecore 1170 */ 1171 u_long dumpmag = 0x8fca0101; /* magic number */ 1172 int dumpsize = 0; /* pages */ 1173 long dumplo = 0; /* blocks */ 1174 1175 /* 1176 * cpu_dumpsize: calculate size of machine-dependent kernel core dump headers. 1177 */ 1178 int 1179 cpu_dumpsize() 1180 { 1181 int size; 1182 1183 size = ALIGN(sizeof(kcore_seg_t)) + ALIGN(sizeof(cpu_kcore_hdr_t)) + 1184 ALIGN(mem_cluster_cnt * sizeof(phys_ram_seg_t)); 1185 if (roundup(size, dbtob(1)) != dbtob(1)) 1186 return -1; 1187 1188 return (1); 1189 } 1190 1191 /* 1192 * cpu_dump_mempagecnt: calculate size of RAM (in pages) to be dumped. 1193 */ 1194 u_long 1195 cpu_dump_mempagecnt() 1196 { 1197 u_long i, n; 1198 1199 n = 0; 1200 for (i = 0; i < mem_cluster_cnt; i++) 1201 n += atop(mem_clusters[i].size); 1202 return (n); 1203 } 1204 1205 /* 1206 * cpu_dump: dump machine-dependent kernel core dump headers. 1207 */ 1208 int 1209 cpu_dump() 1210 { 1211 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1212 char buf[dbtob(1)]; 1213 kcore_seg_t *segp; 1214 cpu_kcore_hdr_t *cpuhdrp; 1215 phys_ram_seg_t *memsegp; 1216 int i; 1217 1218 dump = bdevsw[major(dumpdev)].d_dump; 1219 1220 bzero(buf, sizeof buf); 1221 segp = (kcore_seg_t *)buf; 1222 cpuhdrp = (cpu_kcore_hdr_t *)&buf[ALIGN(sizeof(*segp))]; 1223 memsegp = (phys_ram_seg_t *)&buf[ ALIGN(sizeof(*segp)) + 1224 ALIGN(sizeof(*cpuhdrp))]; 1225 1226 /* 1227 * Generate a segment header. 1228 */ 1229 CORE_SETMAGIC(*segp, KCORE_MAGIC, MID_MACHINE, CORE_CPU); 1230 segp->c_size = dbtob(1) - ALIGN(sizeof(*segp)); 1231 1232 /* 1233 * Add the machine-dependent header info. 1234 */ 1235 cpuhdrp->lev1map_pa = ALPHA_K0SEG_TO_PHYS((vaddr_t)kernel_lev1map); 1236 cpuhdrp->page_size = PAGE_SIZE; 1237 cpuhdrp->nmemsegs = mem_cluster_cnt; 1238 1239 /* 1240 * Fill in the memory segment descriptors. 1241 */ 1242 for (i = 0; i < mem_cluster_cnt; i++) { 1243 memsegp[i].start = mem_clusters[i].start; 1244 memsegp[i].size = mem_clusters[i].size & ~PAGE_MASK; 1245 } 1246 1247 return (dump(dumpdev, dumplo, (caddr_t)buf, dbtob(1))); 1248 } 1249 1250 /* 1251 * This is called by main to set dumplo and dumpsize. 1252 * Dumps always skip the first NBPG of disk space 1253 * in case there might be a disk label stored there. 1254 * If there is extra space, put dump at the end to 1255 * reduce the chance that swapping trashes it. 1256 */ 1257 void 1258 cpu_dumpconf() 1259 { 1260 int nblks, dumpblks; /* size of dump area */ 1261 int maj; 1262 1263 if (dumpdev == NODEV) 1264 goto bad; 1265 maj = major(dumpdev); 1266 if (maj < 0 || maj >= nblkdev) 1267 panic("dumpconf: bad dumpdev=0x%x", dumpdev); 1268 if (bdevsw[maj].d_psize == NULL) 1269 goto bad; 1270 nblks = (*bdevsw[maj].d_psize)(dumpdev); 1271 if (nblks <= ctod(1)) 1272 goto bad; 1273 1274 dumpblks = cpu_dumpsize(); 1275 if (dumpblks < 0) 1276 goto bad; 1277 dumpblks += ctod(cpu_dump_mempagecnt()); 1278 1279 /* If dump won't fit (incl. room for possible label), punt. */ 1280 if (dumpblks > (nblks - ctod(1))) 1281 goto bad; 1282 1283 /* Put dump at end of partition */ 1284 dumplo = nblks - dumpblks; 1285 1286 /* dumpsize is in page units, and doesn't include headers. */ 1287 dumpsize = cpu_dump_mempagecnt(); 1288 return; 1289 1290 bad: 1291 dumpsize = 0; 1292 return; 1293 } 1294 1295 /* 1296 * Dump the kernel's image to the swap partition. 1297 */ 1298 #define BYTES_PER_DUMP NBPG 1299 1300 void 1301 dumpsys() 1302 { 1303 u_long totalbytesleft, bytes, i, n, memcl; 1304 u_long maddr; 1305 int psize; 1306 daddr_t blkno; 1307 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1308 int error; 1309 1310 /* Save registers. */ 1311 savectx(&dumppcb); 1312 1313 msgbufenabled = 0; /* don't record dump msgs in msgbuf */ 1314 if (dumpdev == NODEV) 1315 return; 1316 1317 /* 1318 * For dumps during autoconfiguration, 1319 * if dump device has already configured... 1320 */ 1321 if (dumpsize == 0) 1322 cpu_dumpconf(); 1323 if (dumplo <= 0) { 1324 printf("\ndump to dev %u,%u not possible\n", major(dumpdev), 1325 minor(dumpdev)); 1326 return; 1327 } 1328 printf("\ndumping to dev %u,%u offset %ld\n", major(dumpdev), 1329 minor(dumpdev), dumplo); 1330 1331 psize = (*bdevsw[major(dumpdev)].d_psize)(dumpdev); 1332 printf("dump "); 1333 if (psize == -1) { 1334 printf("area unavailable\n"); 1335 return; 1336 } 1337 1338 /* XXX should purge all outstanding keystrokes. */ 1339 1340 if ((error = cpu_dump()) != 0) 1341 goto err; 1342 1343 totalbytesleft = ptoa(cpu_dump_mempagecnt()); 1344 blkno = dumplo + cpu_dumpsize(); 1345 dump = bdevsw[major(dumpdev)].d_dump; 1346 error = 0; 1347 1348 for (memcl = 0; memcl < mem_cluster_cnt; memcl++) { 1349 maddr = mem_clusters[memcl].start; 1350 bytes = mem_clusters[memcl].size & ~PAGE_MASK; 1351 1352 for (i = 0; i < bytes; i += n, totalbytesleft -= n) { 1353 1354 /* Print out how many MBs we to go. */ 1355 if ((totalbytesleft % (1024*1024)) == 0) 1356 printf("%ld ", totalbytesleft / (1024 * 1024)); 1357 1358 /* Limit size for next transfer. */ 1359 n = bytes - i; 1360 if (n > BYTES_PER_DUMP) 1361 n = BYTES_PER_DUMP; 1362 1363 error = (*dump)(dumpdev, blkno, 1364 (caddr_t)ALPHA_PHYS_TO_K0SEG(maddr), n); 1365 if (error) 1366 goto err; 1367 maddr += n; 1368 blkno += btodb(n); /* XXX? */ 1369 1370 /* XXX should look for keystrokes, to cancel. */ 1371 } 1372 } 1373 1374 err: 1375 switch (error) { 1376 1377 case ENXIO: 1378 printf("device bad\n"); 1379 break; 1380 1381 case EFAULT: 1382 printf("device not ready\n"); 1383 break; 1384 1385 case EINVAL: 1386 printf("area improper\n"); 1387 break; 1388 1389 case EIO: 1390 printf("i/o error\n"); 1391 break; 1392 1393 case EINTR: 1394 printf("aborted from console\n"); 1395 break; 1396 1397 case 0: 1398 printf("succeeded\n"); 1399 break; 1400 1401 default: 1402 printf("error %d\n", error); 1403 break; 1404 } 1405 printf("\n\n"); 1406 delay(1000); 1407 } 1408 1409 void 1410 frametoreg(framep, regp) 1411 struct trapframe *framep; 1412 struct reg *regp; 1413 { 1414 1415 regp->r_regs[R_V0] = framep->tf_regs[FRAME_V0]; 1416 regp->r_regs[R_T0] = framep->tf_regs[FRAME_T0]; 1417 regp->r_regs[R_T1] = framep->tf_regs[FRAME_T1]; 1418 regp->r_regs[R_T2] = framep->tf_regs[FRAME_T2]; 1419 regp->r_regs[R_T3] = framep->tf_regs[FRAME_T3]; 1420 regp->r_regs[R_T4] = framep->tf_regs[FRAME_T4]; 1421 regp->r_regs[R_T5] = framep->tf_regs[FRAME_T5]; 1422 regp->r_regs[R_T6] = framep->tf_regs[FRAME_T6]; 1423 regp->r_regs[R_T7] = framep->tf_regs[FRAME_T7]; 1424 regp->r_regs[R_S0] = framep->tf_regs[FRAME_S0]; 1425 regp->r_regs[R_S1] = framep->tf_regs[FRAME_S1]; 1426 regp->r_regs[R_S2] = framep->tf_regs[FRAME_S2]; 1427 regp->r_regs[R_S3] = framep->tf_regs[FRAME_S3]; 1428 regp->r_regs[R_S4] = framep->tf_regs[FRAME_S4]; 1429 regp->r_regs[R_S5] = framep->tf_regs[FRAME_S5]; 1430 regp->r_regs[R_S6] = framep->tf_regs[FRAME_S6]; 1431 regp->r_regs[R_A0] = framep->tf_regs[FRAME_A0]; 1432 regp->r_regs[R_A1] = framep->tf_regs[FRAME_A1]; 1433 regp->r_regs[R_A2] = framep->tf_regs[FRAME_A2]; 1434 regp->r_regs[R_A3] = framep->tf_regs[FRAME_A3]; 1435 regp->r_regs[R_A4] = framep->tf_regs[FRAME_A4]; 1436 regp->r_regs[R_A5] = framep->tf_regs[FRAME_A5]; 1437 regp->r_regs[R_T8] = framep->tf_regs[FRAME_T8]; 1438 regp->r_regs[R_T9] = framep->tf_regs[FRAME_T9]; 1439 regp->r_regs[R_T10] = framep->tf_regs[FRAME_T10]; 1440 regp->r_regs[R_T11] = framep->tf_regs[FRAME_T11]; 1441 regp->r_regs[R_RA] = framep->tf_regs[FRAME_RA]; 1442 regp->r_regs[R_T12] = framep->tf_regs[FRAME_T12]; 1443 regp->r_regs[R_AT] = framep->tf_regs[FRAME_AT]; 1444 regp->r_regs[R_GP] = framep->tf_regs[FRAME_GP]; 1445 /* regp->r_regs[R_SP] = framep->tf_regs[FRAME_SP]; XXX */ 1446 regp->r_regs[R_ZERO] = 0; 1447 } 1448 1449 void 1450 regtoframe(regp, framep) 1451 struct reg *regp; 1452 struct trapframe *framep; 1453 { 1454 1455 framep->tf_regs[FRAME_V0] = regp->r_regs[R_V0]; 1456 framep->tf_regs[FRAME_T0] = regp->r_regs[R_T0]; 1457 framep->tf_regs[FRAME_T1] = regp->r_regs[R_T1]; 1458 framep->tf_regs[FRAME_T2] = regp->r_regs[R_T2]; 1459 framep->tf_regs[FRAME_T3] = regp->r_regs[R_T3]; 1460 framep->tf_regs[FRAME_T4] = regp->r_regs[R_T4]; 1461 framep->tf_regs[FRAME_T5] = regp->r_regs[R_T5]; 1462 framep->tf_regs[FRAME_T6] = regp->r_regs[R_T6]; 1463 framep->tf_regs[FRAME_T7] = regp->r_regs[R_T7]; 1464 framep->tf_regs[FRAME_S0] = regp->r_regs[R_S0]; 1465 framep->tf_regs[FRAME_S1] = regp->r_regs[R_S1]; 1466 framep->tf_regs[FRAME_S2] = regp->r_regs[R_S2]; 1467 framep->tf_regs[FRAME_S3] = regp->r_regs[R_S3]; 1468 framep->tf_regs[FRAME_S4] = regp->r_regs[R_S4]; 1469 framep->tf_regs[FRAME_S5] = regp->r_regs[R_S5]; 1470 framep->tf_regs[FRAME_S6] = regp->r_regs[R_S6]; 1471 framep->tf_regs[FRAME_A0] = regp->r_regs[R_A0]; 1472 framep->tf_regs[FRAME_A1] = regp->r_regs[R_A1]; 1473 framep->tf_regs[FRAME_A2] = regp->r_regs[R_A2]; 1474 framep->tf_regs[FRAME_A3] = regp->r_regs[R_A3]; 1475 framep->tf_regs[FRAME_A4] = regp->r_regs[R_A4]; 1476 framep->tf_regs[FRAME_A5] = regp->r_regs[R_A5]; 1477 framep->tf_regs[FRAME_T8] = regp->r_regs[R_T8]; 1478 framep->tf_regs[FRAME_T9] = regp->r_regs[R_T9]; 1479 framep->tf_regs[FRAME_T10] = regp->r_regs[R_T10]; 1480 framep->tf_regs[FRAME_T11] = regp->r_regs[R_T11]; 1481 framep->tf_regs[FRAME_RA] = regp->r_regs[R_RA]; 1482 framep->tf_regs[FRAME_T12] = regp->r_regs[R_T12]; 1483 framep->tf_regs[FRAME_AT] = regp->r_regs[R_AT]; 1484 framep->tf_regs[FRAME_GP] = regp->r_regs[R_GP]; 1485 /* framep->tf_regs[FRAME_SP] = regp->r_regs[R_SP]; XXX */ 1486 /* ??? = regp->r_regs[R_ZERO]; */ 1487 } 1488 1489 void 1490 printregs(regp) 1491 struct reg *regp; 1492 { 1493 int i; 1494 1495 for (i = 0; i < 32; i++) 1496 printf("R%d:\t0x%016lx%s", i, regp->r_regs[i], 1497 i & 1 ? "\n" : "\t"); 1498 } 1499 1500 void 1501 regdump(framep) 1502 struct trapframe *framep; 1503 { 1504 struct reg reg; 1505 1506 frametoreg(framep, ®); 1507 reg.r_regs[R_SP] = alpha_pal_rdusp(); 1508 1509 printf("REGISTERS:\n"); 1510 printregs(®); 1511 } 1512 1513 #ifdef DEBUG 1514 int sigdebug = 0; 1515 int sigpid = 0; 1516 #define SDB_FOLLOW 0x01 1517 #define SDB_KSTACK 0x02 1518 #endif 1519 1520 /* 1521 * Send an interrupt to process. 1522 */ 1523 void 1524 sendsig(catcher, sig, mask, code) 1525 sig_t catcher; 1526 int sig; 1527 sigset_t *mask; 1528 u_long code; 1529 { 1530 struct proc *p = curproc; 1531 struct sigcontext *scp, ksc; 1532 struct trapframe *frame; 1533 struct sigacts *psp = p->p_sigacts; 1534 int onstack, fsize, rndfsize; 1535 1536 frame = p->p_md.md_tf; 1537 1538 /* Do we need to jump onto the signal stack? */ 1539 onstack = 1540 (psp->ps_sigstk.ss_flags & (SS_DISABLE | SS_ONSTACK)) == 0 && 1541 (psp->ps_sigact[sig].sa_flags & SA_ONSTACK) != 0; 1542 1543 /* Allocate space for the signal handler context. */ 1544 fsize = sizeof(ksc); 1545 rndfsize = ((fsize + 15) / 16) * 16; 1546 1547 if (onstack) 1548 scp = (struct sigcontext *)((caddr_t)psp->ps_sigstk.ss_sp + 1549 psp->ps_sigstk.ss_size); 1550 else 1551 scp = (struct sigcontext *)(alpha_pal_rdusp()); 1552 scp = (struct sigcontext *)((caddr_t)scp - rndfsize); 1553 1554 #ifdef DEBUG 1555 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1556 printf("sendsig(%d): sig %d ssp %p usp %p\n", p->p_pid, 1557 sig, &onstack, scp); 1558 #endif 1559 1560 /* Build stack frame for signal trampoline. */ 1561 ksc.sc_pc = frame->tf_regs[FRAME_PC]; 1562 ksc.sc_ps = frame->tf_regs[FRAME_PS]; 1563 1564 /* Save register context. */ 1565 frametoreg(frame, (struct reg *)ksc.sc_regs); 1566 ksc.sc_regs[R_ZERO] = 0xACEDBADE; /* magic number */ 1567 ksc.sc_regs[R_SP] = alpha_pal_rdusp(); 1568 1569 /* save the floating-point state, if necessary, then copy it. */ 1570 if (p == fpcurproc) { 1571 alpha_pal_wrfen(1); 1572 savefpstate(&p->p_addr->u_pcb.pcb_fp); 1573 alpha_pal_wrfen(0); 1574 fpcurproc = NULL; 1575 } 1576 ksc.sc_ownedfp = p->p_md.md_flags & MDP_FPUSED; 1577 bcopy(&p->p_addr->u_pcb.pcb_fp, (struct fpreg *)ksc.sc_fpregs, 1578 sizeof(struct fpreg)); 1579 ksc.sc_fp_control = 0; /* XXX ? */ 1580 bzero(ksc.sc_reserved, sizeof ksc.sc_reserved); /* XXX */ 1581 bzero(ksc.sc_xxx, sizeof ksc.sc_xxx); /* XXX */ 1582 1583 /* Save signal stack. */ 1584 ksc.sc_onstack = psp->ps_sigstk.ss_flags & SS_ONSTACK; 1585 1586 /* Save signal mask. */ 1587 ksc.sc_mask = *mask; 1588 1589 #ifdef COMPAT_13 1590 /* 1591 * XXX We always have to save an old style signal mask because 1592 * XXX we might be delivering a signal to a process which will 1593 * XXX escape from the signal in a non-standard way and invoke 1594 * XXX sigreturn() directly. 1595 */ 1596 { 1597 /* Note: it's a long in the stack frame. */ 1598 sigset13_t mask13; 1599 1600 native_sigset_to_sigset13(mask, &mask13); 1601 ksc.__sc_mask13 = mask13; 1602 } 1603 #endif 1604 1605 #ifdef COMPAT_OSF1 1606 /* 1607 * XXX Create an OSF/1-style sigcontext and associated goo. 1608 */ 1609 #endif 1610 1611 if (copyout(&ksc, (caddr_t)scp, fsize) != 0) { 1612 /* 1613 * Process has trashed its stack; give it an illegal 1614 * instruction to halt it in its tracks. 1615 */ 1616 #ifdef DEBUG 1617 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1618 printf("sendsig(%d): copyout failed on sig %d\n", 1619 p->p_pid, sig); 1620 #endif 1621 sigexit(p, SIGILL); 1622 /* NOTREACHED */ 1623 } 1624 #ifdef DEBUG 1625 if (sigdebug & SDB_FOLLOW) 1626 printf("sendsig(%d): sig %d scp %p code %lx\n", p->p_pid, sig, 1627 scp, code); 1628 #endif 1629 1630 /* Set up the registers to return to sigcode. */ 1631 frame->tf_regs[FRAME_PC] = (u_int64_t)psp->ps_sigcode; 1632 frame->tf_regs[FRAME_A0] = sig; 1633 frame->tf_regs[FRAME_A1] = code; 1634 frame->tf_regs[FRAME_A2] = (u_int64_t)scp; 1635 frame->tf_regs[FRAME_T12] = (u_int64_t)catcher; /* t12 is pv */ 1636 alpha_pal_wrusp((unsigned long)scp); 1637 1638 /* Remember that we're now on the signal stack. */ 1639 if (onstack) 1640 psp->ps_sigstk.ss_flags |= SS_ONSTACK; 1641 1642 #ifdef DEBUG 1643 if (sigdebug & SDB_FOLLOW) 1644 printf("sendsig(%d): pc %lx, catcher %lx\n", p->p_pid, 1645 frame->tf_regs[FRAME_PC], frame->tf_regs[FRAME_A3]); 1646 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1647 printf("sendsig(%d): sig %d returns\n", 1648 p->p_pid, sig); 1649 #endif 1650 } 1651 1652 /* 1653 * System call to cleanup state after a signal 1654 * has been taken. Reset signal mask and 1655 * stack state from context left by sendsig (above). 1656 * Return to previous pc and psl as specified by 1657 * context left by sendsig. Check carefully to 1658 * make sure that the user has not modified the 1659 * psl to gain improper privileges or to cause 1660 * a machine fault. 1661 */ 1662 /* ARGSUSED */ 1663 int 1664 sys___sigreturn14(p, v, retval) 1665 struct proc *p; 1666 void *v; 1667 register_t *retval; 1668 { 1669 struct sys___sigreturn14_args /* { 1670 syscallarg(struct sigcontext *) sigcntxp; 1671 } */ *uap = v; 1672 struct sigcontext *scp, ksc; 1673 1674 /* 1675 * The trampoline code hands us the context. 1676 * It is unsafe to keep track of it ourselves, in the event that a 1677 * program jumps out of a signal handler. 1678 */ 1679 scp = SCARG(uap, sigcntxp); 1680 #ifdef DEBUG 1681 if (sigdebug & SDB_FOLLOW) 1682 printf("sigreturn: pid %d, scp %p\n", p->p_pid, scp); 1683 #endif 1684 if (ALIGN(scp) != (u_int64_t)scp) 1685 return (EINVAL); 1686 1687 if (copyin((caddr_t)scp, &ksc, sizeof(ksc)) != 0) 1688 return (EFAULT); 1689 1690 if (ksc.sc_regs[R_ZERO] != 0xACEDBADE) /* magic number */ 1691 return (EINVAL); 1692 1693 /* Restore register context. */ 1694 p->p_md.md_tf->tf_regs[FRAME_PC] = ksc.sc_pc; 1695 p->p_md.md_tf->tf_regs[FRAME_PS] = 1696 (ksc.sc_ps | ALPHA_PSL_USERSET) & ~ALPHA_PSL_USERCLR; 1697 1698 regtoframe((struct reg *)ksc.sc_regs, p->p_md.md_tf); 1699 alpha_pal_wrusp(ksc.sc_regs[R_SP]); 1700 1701 /* XXX ksc.sc_ownedfp ? */ 1702 if (p == fpcurproc) 1703 fpcurproc = NULL; 1704 bcopy((struct fpreg *)ksc.sc_fpregs, &p->p_addr->u_pcb.pcb_fp, 1705 sizeof(struct fpreg)); 1706 /* XXX ksc.sc_fp_control ? */ 1707 1708 /* Restore signal stack. */ 1709 if (ksc.sc_onstack & SS_ONSTACK) 1710 p->p_sigacts->ps_sigstk.ss_flags |= SS_ONSTACK; 1711 else 1712 p->p_sigacts->ps_sigstk.ss_flags &= ~SS_ONSTACK; 1713 1714 /* Restore signal mask. */ 1715 (void) sigprocmask1(p, SIG_SETMASK, &ksc.sc_mask, 0); 1716 1717 #ifdef DEBUG 1718 if (sigdebug & SDB_FOLLOW) 1719 printf("sigreturn(%d): returns\n", p->p_pid); 1720 #endif 1721 return (EJUSTRETURN); 1722 } 1723 1724 /* 1725 * machine dependent system variables. 1726 */ 1727 int 1728 cpu_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 1729 int *name; 1730 u_int namelen; 1731 void *oldp; 1732 size_t *oldlenp; 1733 void *newp; 1734 size_t newlen; 1735 struct proc *p; 1736 { 1737 dev_t consdev; 1738 1739 /* all sysctl names at this level are terminal */ 1740 if (namelen != 1) 1741 return (ENOTDIR); /* overloaded */ 1742 1743 switch (name[0]) { 1744 case CPU_CONSDEV: 1745 if (cn_tab != NULL) 1746 consdev = cn_tab->cn_dev; 1747 else 1748 consdev = NODEV; 1749 return (sysctl_rdstruct(oldp, oldlenp, newp, &consdev, 1750 sizeof consdev)); 1751 1752 case CPU_ROOT_DEVICE: 1753 return (sysctl_rdstring(oldp, oldlenp, newp, 1754 root_device->dv_xname)); 1755 1756 case CPU_UNALIGNED_PRINT: 1757 return (sysctl_int(oldp, oldlenp, newp, newlen, 1758 &alpha_unaligned_print)); 1759 1760 case CPU_UNALIGNED_FIX: 1761 return (sysctl_int(oldp, oldlenp, newp, newlen, 1762 &alpha_unaligned_fix)); 1763 1764 case CPU_UNALIGNED_SIGBUS: 1765 return (sysctl_int(oldp, oldlenp, newp, newlen, 1766 &alpha_unaligned_sigbus)); 1767 1768 case CPU_BOOTED_KERNEL: 1769 return (sysctl_rdstring(oldp, oldlenp, newp, 1770 bootinfo.booted_kernel)); 1771 1772 default: 1773 return (EOPNOTSUPP); 1774 } 1775 /* NOTREACHED */ 1776 } 1777 1778 /* 1779 * Set registers on exec. 1780 */ 1781 void 1782 setregs(p, pack, stack) 1783 register struct proc *p; 1784 struct exec_package *pack; 1785 u_long stack; 1786 { 1787 struct trapframe *tfp = p->p_md.md_tf; 1788 #ifdef DEBUG 1789 int i; 1790 #endif 1791 1792 #ifdef DEBUG 1793 /* 1794 * Crash and dump, if the user requested it. 1795 */ 1796 if (boothowto & RB_DUMP) 1797 panic("crash requested by boot flags"); 1798 #endif 1799 1800 #ifdef DEBUG 1801 for (i = 0; i < FRAME_SIZE; i++) 1802 tfp->tf_regs[i] = 0xbabefacedeadbeef; 1803 #else 1804 bzero(tfp->tf_regs, FRAME_SIZE * sizeof tfp->tf_regs[0]); 1805 #endif 1806 bzero(&p->p_addr->u_pcb.pcb_fp, sizeof p->p_addr->u_pcb.pcb_fp); 1807 p->p_addr->u_pcb.pcb_fp.fpr_cr = FPCR_INED 1808 | FPCR_UNFD 1809 | FPCR_UNDZ 1810 | FPCR_DYN(FP_RN) 1811 | FPCR_OVFD 1812 | FPCR_DZED 1813 | FPCR_INVD 1814 | FPCR_DNZ; 1815 alpha_pal_wrusp(stack); 1816 tfp->tf_regs[FRAME_PS] = ALPHA_PSL_USERSET; 1817 tfp->tf_regs[FRAME_PC] = pack->ep_entry & ~3; 1818 1819 tfp->tf_regs[FRAME_A0] = stack; /* a0 = sp */ 1820 tfp->tf_regs[FRAME_A1] = 0; /* a1 = rtld cleanup */ 1821 tfp->tf_regs[FRAME_A2] = 0; /* a2 = rtld object */ 1822 tfp->tf_regs[FRAME_A3] = (u_int64_t)PS_STRINGS; /* a3 = ps_strings */ 1823 tfp->tf_regs[FRAME_T12] = tfp->tf_regs[FRAME_PC]; /* a.k.a. PV */ 1824 1825 p->p_md.md_flags &= ~MDP_FPUSED; 1826 if (fpcurproc == p) 1827 fpcurproc = NULL; 1828 } 1829 1830 void 1831 netintr() 1832 { 1833 int n, s; 1834 1835 s = splhigh(); 1836 n = netisr; 1837 netisr = 0; 1838 splx(s); 1839 1840 #define DONETISR(bit, fn) \ 1841 do { \ 1842 if (n & (1 << (bit))) \ 1843 fn(); \ 1844 } while (0) 1845 1846 #include <net/netisr_dispatch.h> 1847 1848 #undef DONETISR 1849 } 1850 1851 void 1852 do_sir() 1853 { 1854 u_int64_t n; 1855 1856 while ((n = alpha_atomic_loadlatch_q(&ssir, 0)) != 0) { 1857 #define COUNT_SOFT uvmexp.softs++ 1858 1859 #define DO_SIR(bit, fn) \ 1860 do { \ 1861 if (n & (bit)) { \ 1862 COUNT_SOFT; \ 1863 fn; \ 1864 } \ 1865 } while (0) 1866 1867 DO_SIR(SIR_NET, netintr()); 1868 DO_SIR(SIR_CLOCK, softclock()); 1869 #if NCOM > 0 1870 DO_SIR(SIR_SERIAL, comsoft()); 1871 #endif 1872 #if NZSC_IOASIC > 0 1873 DO_SIR(SIR_SERIAL, zs_ioasic_softintr()); 1874 #endif 1875 1876 #undef COUNT_SOFT 1877 #undef DO_SIR 1878 } 1879 } 1880 1881 int 1882 spl0() 1883 { 1884 1885 if (ssir) { 1886 (void) alpha_pal_swpipl(ALPHA_PSL_IPL_SOFT); 1887 do_sir(); 1888 } 1889 1890 return (alpha_pal_swpipl(ALPHA_PSL_IPL_0)); 1891 } 1892 1893 /* 1894 * The following primitives manipulate the run queues. _whichqs tells which 1895 * of the 32 queues _qs have processes in them. Setrunqueue puts processes 1896 * into queues, Remrunqueue removes them from queues. The running process is 1897 * on no queue, other processes are on a queue related to p->p_priority, 1898 * divided by 4 actually to shrink the 0-127 range of priorities into the 32 1899 * available queues. 1900 */ 1901 /* 1902 * setrunqueue(p) 1903 * proc *p; 1904 * 1905 * Call should be made at splclock(), and p->p_stat should be SRUN. 1906 */ 1907 1908 void 1909 setrunqueue(p) 1910 struct proc *p; 1911 { 1912 int bit; 1913 1914 /* firewall: p->p_back must be NULL */ 1915 if (p->p_back != NULL) 1916 panic("setrunqueue"); 1917 1918 bit = p->p_priority >> 2; 1919 whichqs |= (1 << bit); 1920 p->p_forw = (struct proc *)&qs[bit]; 1921 p->p_back = qs[bit].ph_rlink; 1922 p->p_back->p_forw = p; 1923 qs[bit].ph_rlink = p; 1924 } 1925 1926 /* 1927 * remrunqueue(p) 1928 * 1929 * Call should be made at splclock(). 1930 */ 1931 void 1932 remrunqueue(p) 1933 struct proc *p; 1934 { 1935 int bit; 1936 1937 bit = p->p_priority >> 2; 1938 if ((whichqs & (1 << bit)) == 0) 1939 panic("remrunqueue"); 1940 1941 p->p_back->p_forw = p->p_forw; 1942 p->p_forw->p_back = p->p_back; 1943 p->p_back = NULL; /* for firewall checking. */ 1944 1945 if ((struct proc *)&qs[bit] == qs[bit].ph_link) 1946 whichqs &= ~(1 << bit); 1947 } 1948 1949 /* 1950 * Return the best possible estimate of the time in the timeval 1951 * to which tvp points. Unfortunately, we can't read the hardware registers. 1952 * We guarantee that the time will be greater than the value obtained by a 1953 * previous call. 1954 */ 1955 void 1956 microtime(tvp) 1957 register struct timeval *tvp; 1958 { 1959 int s = splclock(); 1960 static struct timeval lasttime; 1961 1962 *tvp = time; 1963 #ifdef notdef 1964 tvp->tv_usec += clkread(); 1965 while (tvp->tv_usec >= 1000000) { 1966 tvp->tv_sec++; 1967 tvp->tv_usec -= 1000000; 1968 } 1969 #endif 1970 if (tvp->tv_sec == lasttime.tv_sec && 1971 tvp->tv_usec <= lasttime.tv_usec && 1972 (tvp->tv_usec = lasttime.tv_usec + 1) >= 1000000) { 1973 tvp->tv_sec++; 1974 tvp->tv_usec -= 1000000; 1975 } 1976 lasttime = *tvp; 1977 splx(s); 1978 } 1979 1980 /* 1981 * Wait "n" microseconds. 1982 */ 1983 void 1984 delay(n) 1985 unsigned long n; 1986 { 1987 long N = cycles_per_usec * (n); 1988 1989 /* 1990 * XXX Should be written to use RPCC? 1991 */ 1992 1993 __asm __volatile( 1994 "# The 2 corresponds to the insn count\n" 1995 "1: subq %2, %1, %0 \n" 1996 " bgt %0, 1b" 1997 : "=r" (N) 1998 : "i" (2), "0" (N)); 1999 } 2000 2001 #if defined(COMPAT_OSF1) || 1 /* XXX */ 2002 void cpu_exec_ecoff_setregs __P((struct proc *, struct exec_package *, 2003 u_long)); 2004 2005 void 2006 cpu_exec_ecoff_setregs(p, epp, stack) 2007 struct proc *p; 2008 struct exec_package *epp; 2009 u_long stack; 2010 { 2011 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2012 2013 setregs(p, epp, stack); 2014 p->p_md.md_tf->tf_regs[FRAME_GP] = execp->a.gp_value; 2015 } 2016 2017 /* 2018 * cpu_exec_ecoff_hook(): 2019 * cpu-dependent ECOFF format hook for execve(). 2020 * 2021 * Do any machine-dependent diddling of the exec package when doing ECOFF. 2022 * 2023 */ 2024 int 2025 cpu_exec_ecoff_hook(p, epp) 2026 struct proc *p; 2027 struct exec_package *epp; 2028 { 2029 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2030 extern struct emul emul_netbsd; 2031 int error; 2032 extern int osf1_exec_ecoff_hook(struct proc *p, 2033 struct exec_package *epp); 2034 2035 switch (execp->f.f_magic) { 2036 #ifdef COMPAT_OSF1 2037 case ECOFF_MAGIC_ALPHA: 2038 error = osf1_exec_ecoff_hook(p, epp); 2039 break; 2040 #endif 2041 2042 case ECOFF_MAGIC_NETBSD_ALPHA: 2043 epp->ep_emul = &emul_netbsd; 2044 error = 0; 2045 break; 2046 2047 default: 2048 error = ENOEXEC; 2049 } 2050 return (error); 2051 } 2052 #endif 2053 2054 int 2055 alpha_pa_access(pa) 2056 u_long pa; 2057 { 2058 int i; 2059 2060 for (i = 0; i < mem_cluster_cnt; i++) { 2061 if (pa < mem_clusters[i].start) 2062 continue; 2063 if ((pa - mem_clusters[i].start) >= 2064 (mem_clusters[i].size & ~PAGE_MASK)) 2065 continue; 2066 return (mem_clusters[i].size & PAGE_MASK); /* prot */ 2067 } 2068 2069 /* 2070 * Address is not a memory address. If we're secure, disallow 2071 * access. Otherwise, grant read/write. 2072 */ 2073 if (securelevel > 0) 2074 return (PROT_NONE); 2075 else 2076 return (PROT_READ | PROT_WRITE); 2077 } 2078 2079 /* XXX XXX BEGIN XXX XXX */ 2080 paddr_t alpha_XXX_dmamap_or; /* XXX */ 2081 /* XXX */ 2082 paddr_t /* XXX */ 2083 alpha_XXX_dmamap(v) /* XXX */ 2084 vaddr_t v; /* XXX */ 2085 { /* XXX */ 2086 /* XXX */ 2087 return (vtophys(v) | alpha_XXX_dmamap_or); /* XXX */ 2088 } /* XXX */ 2089 /* XXX XXX END XXX XXX */ 2090 2091 char * 2092 dot_conv(x) 2093 unsigned long x; 2094 { 2095 int i; 2096 char *xc; 2097 static int next; 2098 static char space[2][20]; 2099 2100 xc = space[next ^= 1] + sizeof space[0]; 2101 *--xc = '\0'; 2102 for (i = 0;; ++i) { 2103 if (i && (i & 3) == 0) 2104 *--xc = '.'; 2105 *--xc = "0123456789abcdef"[x & 0xf]; 2106 x >>= 4; 2107 if (x == 0) 2108 break; 2109 } 2110 return xc; 2111 } 2112
Indexes created Fri Oct 03 17:10:05 GMT 2025