machdep.c revision 1.237
1 /* $NetBSD: machdep.c,v 1.237 2001/04/21 16:27:10 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 1999, 2000 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 74 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 75 76 __KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.237 2001/04/21 16:27:10 thorpej Exp $"); 77 78 #include <sys/param.h> 79 #include <sys/systm.h> 80 #include <sys/signalvar.h> 81 #include <sys/kernel.h> 82 #include <sys/map.h> 83 #include <sys/proc.h> 84 #include <sys/sched.h> 85 #include <sys/buf.h> 86 #include <sys/reboot.h> 87 #include <sys/device.h> 88 #include <sys/file.h> 89 #include <sys/malloc.h> 90 #include <sys/mbuf.h> 91 #include <sys/mman.h> 92 #include <sys/msgbuf.h> 93 #include <sys/ioctl.h> 94 #include <sys/tty.h> 95 #include <sys/user.h> 96 #include <sys/exec.h> 97 #include <sys/exec_ecoff.h> 98 #include <sys/core.h> 99 #include <sys/kcore.h> 100 #include <machine/kcore.h> 101 102 #include <sys/mount.h> 103 #include <sys/syscallargs.h> 104 105 #include <uvm/uvm_extern.h> 106 #include <sys/sysctl.h> 107 108 #include <dev/cons.h> 109 110 #include <machine/autoconf.h> 111 #include <machine/cpu.h> 112 #include <machine/reg.h> 113 #include <machine/rpb.h> 114 #include <machine/prom.h> 115 #include <machine/conf.h> 116 #include <machine/ieeefp.h> 117 118 #ifdef DDB 119 #include <machine/db_machdep.h> 120 #include <ddb/db_access.h> 121 #include <ddb/db_sym.h> 122 #include <ddb/db_extern.h> 123 #include <ddb/db_interface.h> 124 #endif 125 126 #ifdef KGDB 127 #include <sys/kgdb.h> 128 #endif 129 130 #ifdef DEBUG 131 #include <machine/sigdebug.h> 132 #endif 133 134 #include <machine/alpha.h> 135 136 vm_map_t exec_map = NULL; 137 vm_map_t mb_map = NULL; 138 vm_map_t phys_map = NULL; 139 140 caddr_t msgbufaddr; 141 142 int maxmem; /* max memory per process */ 143 144 int totalphysmem; /* total amount of physical memory in system */ 145 int physmem; /* physical memory used by NetBSD + some rsvd */ 146 int resvmem; /* amount of memory reserved for PROM */ 147 int unusedmem; /* amount of memory for OS that we don't use */ 148 int unknownmem; /* amount of memory with an unknown use */ 149 150 int cputype; /* system type, from the RPB */ 151 152 int bootdev_debug = 0; /* patchable, or from DDB */ 153 154 /* 155 * XXX We need an address to which we can assign things so that they 156 * won't be optimized away because we didn't use the value. 157 */ 158 u_int32_t no_optimize; 159 160 /* the following is used externally (sysctl_hw) */ 161 char machine[] = MACHINE; /* from <machine/param.h> */ 162 char machine_arch[] = MACHINE_ARCH; /* from <machine/param.h> */ 163 char cpu_model[128]; 164 165 struct user *proc0paddr; 166 167 /* Number of machine cycles per microsecond */ 168 u_int64_t cycles_per_usec; 169 170 /* number of cpus in the box. really! */ 171 int ncpus; 172 173 struct bootinfo_kernel bootinfo; 174 175 /* For built-in TCDS */ 176 #if defined(DEC_3000_300) || defined(DEC_3000_500) 177 u_int8_t dec_3000_scsiid[2], dec_3000_scsifast[2]; 178 #endif 179 180 struct platform platform; 181 182 #ifdef DDB 183 /* start and end of kernel symbol table */ 184 void *ksym_start, *ksym_end; 185 #endif 186 187 /* for cpu_sysctl() */ 188 int alpha_unaligned_print = 1; /* warn about unaligned accesses */ 189 int alpha_unaligned_fix = 1; /* fix up unaligned accesses */ 190 int alpha_unaligned_sigbus = 0; /* don't SIGBUS on fixed-up accesses */ 191 192 /* 193 * XXX This should be dynamically sized, but we have the chicken-egg problem! 194 * XXX it should also be larger than it is, because not all of the mddt 195 * XXX clusters end up being used for VM. 196 */ 197 phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX]; /* low size bits overloaded */ 198 int mem_cluster_cnt; 199 200 int cpu_dump __P((void)); 201 int cpu_dumpsize __P((void)); 202 u_long cpu_dump_mempagecnt __P((void)); 203 void dumpsys __P((void)); 204 void identifycpu __P((void)); 205 void printregs __P((struct reg *)); 206 207 void 208 alpha_init(pfn, ptb, bim, bip, biv) 209 u_long pfn; /* first free PFN number */ 210 u_long ptb; /* PFN of current level 1 page table */ 211 u_long bim; /* bootinfo magic */ 212 u_long bip; /* bootinfo pointer */ 213 u_long biv; /* bootinfo version */ 214 { 215 extern char kernel_text[], _end[]; 216 struct mddt *mddtp; 217 struct mddt_cluster *memc; 218 int i, mddtweird; 219 struct vm_physseg *vps; 220 vaddr_t kernstart, kernend; 221 paddr_t kernstartpfn, kernendpfn, pfn0, pfn1; 222 vsize_t size; 223 cpuid_t cpu_id; 224 struct cpu_info *ci; 225 char *p; 226 caddr_t v; 227 const char *bootinfo_msg; 228 const struct cpuinit *c; 229 230 /* NO OUTPUT ALLOWED UNTIL FURTHER NOTICE */ 231 232 /* 233 * Turn off interrupts (not mchecks) and floating point. 234 * Make sure the instruction and data streams are consistent. 235 */ 236 (void)alpha_pal_swpipl(ALPHA_PSL_IPL_HIGH); 237 alpha_pal_wrfen(0); 238 ALPHA_TBIA(); 239 alpha_pal_imb(); 240 241 cpu_id = cpu_number(); 242 243 #if defined(MULTIPROCESSOR) 244 /* 245 * Set our SysValue to the address of our cpu_info structure. 246 * Secondary processors do this in their spinup trampoline. 247 */ 248 alpha_pal_wrval((u_long)&cpu_info_primary); 249 cpu_info[cpu_id] = &cpu_info_primary; 250 #endif 251 252 ci = curcpu(); 253 ci->ci_cpuid = cpu_id; 254 255 /* 256 * Get critical system information (if possible, from the 257 * information provided by the boot program). 258 */ 259 bootinfo_msg = NULL; 260 if (bim == BOOTINFO_MAGIC) { 261 if (biv == 0) { /* backward compat */ 262 biv = *(u_long *)bip; 263 bip += 8; 264 } 265 switch (biv) { 266 case 1: { 267 struct bootinfo_v1 *v1p = (struct bootinfo_v1 *)bip; 268 269 bootinfo.ssym = v1p->ssym; 270 bootinfo.esym = v1p->esym; 271 /* hwrpb may not be provided by boot block in v1 */ 272 if (v1p->hwrpb != NULL) { 273 bootinfo.hwrpb_phys = 274 ((struct rpb *)v1p->hwrpb)->rpb_phys; 275 bootinfo.hwrpb_size = v1p->hwrpbsize; 276 } else { 277 bootinfo.hwrpb_phys = 278 ((struct rpb *)HWRPB_ADDR)->rpb_phys; 279 bootinfo.hwrpb_size = 280 ((struct rpb *)HWRPB_ADDR)->rpb_size; 281 } 282 bcopy(v1p->boot_flags, bootinfo.boot_flags, 283 min(sizeof v1p->boot_flags, 284 sizeof bootinfo.boot_flags)); 285 bcopy(v1p->booted_kernel, bootinfo.booted_kernel, 286 min(sizeof v1p->booted_kernel, 287 sizeof bootinfo.booted_kernel)); 288 /* booted dev not provided in bootinfo */ 289 init_prom_interface((struct rpb *) 290 ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys)); 291 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 292 sizeof bootinfo.booted_dev); 293 break; 294 } 295 default: 296 bootinfo_msg = "unknown bootinfo version"; 297 goto nobootinfo; 298 } 299 } else { 300 bootinfo_msg = "boot program did not pass bootinfo"; 301 nobootinfo: 302 bootinfo.ssym = (u_long)_end; 303 bootinfo.esym = (u_long)_end; 304 bootinfo.hwrpb_phys = ((struct rpb *)HWRPB_ADDR)->rpb_phys; 305 bootinfo.hwrpb_size = ((struct rpb *)HWRPB_ADDR)->rpb_size; 306 init_prom_interface((struct rpb *)HWRPB_ADDR); 307 prom_getenv(PROM_E_BOOTED_OSFLAGS, bootinfo.boot_flags, 308 sizeof bootinfo.boot_flags); 309 prom_getenv(PROM_E_BOOTED_FILE, bootinfo.booted_kernel, 310 sizeof bootinfo.booted_kernel); 311 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 312 sizeof bootinfo.booted_dev); 313 } 314 315 /* 316 * Initialize the kernel's mapping of the RPB. It's needed for 317 * lots of things. 318 */ 319 hwrpb = (struct rpb *)ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys); 320 321 #if defined(DEC_3000_300) || defined(DEC_3000_500) 322 if (hwrpb->rpb_type == ST_DEC_3000_300 || 323 hwrpb->rpb_type == ST_DEC_3000_500) { 324 prom_getenv(PROM_E_SCSIID, dec_3000_scsiid, 325 sizeof(dec_3000_scsiid)); 326 prom_getenv(PROM_E_SCSIFAST, dec_3000_scsifast, 327 sizeof(dec_3000_scsifast)); 328 } 329 #endif 330 331 /* 332 * Remember how many cycles there are per microsecond, 333 * so that we can use delay(). Round up, for safety. 334 */ 335 cycles_per_usec = (hwrpb->rpb_cc_freq + 999999) / 1000000; 336 337 /* 338 * Initalize the (temporary) bootstrap console interface, so 339 * we can use printf until the VM system starts being setup. 340 * The real console is initialized before then. 341 */ 342 init_bootstrap_console(); 343 344 /* OUTPUT NOW ALLOWED */ 345 346 /* delayed from above */ 347 if (bootinfo_msg) 348 printf("WARNING: %s (0x%lx, 0x%lx, 0x%lx)\n", 349 bootinfo_msg, bim, bip, biv); 350 351 /* Initialize the trap vectors on the primary processor. */ 352 trap_init(); 353 354 /* 355 * Find out what hardware we're on, and do basic initialization. 356 */ 357 cputype = hwrpb->rpb_type; 358 if (cputype < 0) { 359 /* 360 * At least some white-box systems have SRM which 361 * reports a systype that's the negative of their 362 * blue-box counterpart. 363 */ 364 cputype = -cputype; 365 } 366 c = platform_lookup(cputype); 367 if (c == NULL) { 368 platform_not_supported(); 369 /* NOTREACHED */ 370 } 371 (*c->init)(); 372 strcpy(cpu_model, platform.model); 373 374 /* 375 * Initalize the real console, so that the bootstrap console is 376 * no longer necessary. 377 */ 378 (*platform.cons_init)(); 379 380 #ifdef DIAGNOSTIC 381 /* Paranoid sanity checking */ 382 383 /* We should always be running on the primary. */ 384 assert(hwrpb->rpb_primary_cpu_id == cpu_id); 385 386 /* 387 * On single-CPU systypes, the primary should always be CPU 0, 388 * except on Alpha 8200 systems where the CPU id is related 389 * to the VID, which is related to the Turbo Laser node id. 390 */ 391 if (cputype != ST_DEC_21000) 392 assert(hwrpb->rpb_primary_cpu_id == 0); 393 #endif 394 395 /* NO MORE FIRMWARE ACCESS ALLOWED */ 396 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 397 /* 398 * XXX (unless _PMAP_MAY_USE_PROM_CONSOLE is defined and 399 * XXX pmap_uses_prom_console() evaluates to non-zero.) 400 */ 401 #endif 402 403 /* 404 * find out this system's page size 405 */ 406 PAGE_SIZE = hwrpb->rpb_page_size; 407 if (PAGE_SIZE != 8192) 408 panic("page size %d != 8192?!", PAGE_SIZE); 409 410 /* 411 * Initialize PAGE_SIZE-dependent variables. 412 */ 413 uvm_setpagesize(); 414 415 /* 416 * Find the beginning and end of the kernel (and leave a 417 * bit of space before the beginning for the bootstrap 418 * stack). 419 */ 420 kernstart = trunc_page((vaddr_t)kernel_text) - 2 * PAGE_SIZE; 421 #ifdef DDB 422 ksym_start = (void *)bootinfo.ssym; 423 ksym_end = (void *)bootinfo.esym; 424 kernend = (vaddr_t)round_page((vaddr_t)ksym_end); 425 #else 426 kernend = (vaddr_t)round_page((vaddr_t)_end); 427 #endif 428 429 kernstartpfn = atop(ALPHA_K0SEG_TO_PHYS(kernstart)); 430 kernendpfn = atop(ALPHA_K0SEG_TO_PHYS(kernend)); 431 432 /* 433 * Find out how much memory is available, by looking at 434 * the memory cluster descriptors. This also tries to do 435 * its best to detect things things that have never been seen 436 * before... 437 */ 438 mddtp = (struct mddt *)(((caddr_t)hwrpb) + hwrpb->rpb_memdat_off); 439 440 /* MDDT SANITY CHECKING */ 441 mddtweird = 0; 442 if (mddtp->mddt_cluster_cnt < 2) { 443 mddtweird = 1; 444 printf("WARNING: weird number of mem clusters: %lu\n", 445 mddtp->mddt_cluster_cnt); 446 } 447 448 #if 0 449 printf("Memory cluster count: %d\n", mddtp->mddt_cluster_cnt); 450 #endif 451 452 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 453 memc = &mddtp->mddt_clusters[i]; 454 #if 0 455 printf("MEMC %d: pfn 0x%lx cnt 0x%lx usage 0x%lx\n", i, 456 memc->mddt_pfn, memc->mddt_pg_cnt, memc->mddt_usage); 457 #endif 458 totalphysmem += memc->mddt_pg_cnt; 459 if (mem_cluster_cnt < VM_PHYSSEG_MAX) { /* XXX */ 460 mem_clusters[mem_cluster_cnt].start = 461 ptoa(memc->mddt_pfn); 462 mem_clusters[mem_cluster_cnt].size = 463 ptoa(memc->mddt_pg_cnt); 464 if (memc->mddt_usage & MDDT_mbz || 465 memc->mddt_usage & MDDT_NONVOLATILE || /* XXX */ 466 memc->mddt_usage & MDDT_PALCODE) 467 mem_clusters[mem_cluster_cnt].size |= 468 PROT_READ; 469 else 470 mem_clusters[mem_cluster_cnt].size |= 471 PROT_READ | PROT_WRITE | PROT_EXEC; 472 mem_cluster_cnt++; 473 } 474 475 if (memc->mddt_usage & MDDT_mbz) { 476 mddtweird = 1; 477 printf("WARNING: mem cluster %d has weird " 478 "usage 0x%lx\n", i, memc->mddt_usage); 479 unknownmem += memc->mddt_pg_cnt; 480 continue; 481 } 482 if (memc->mddt_usage & MDDT_NONVOLATILE) { 483 /* XXX should handle these... */ 484 printf("WARNING: skipping non-volatile mem " 485 "cluster %d\n", i); 486 unusedmem += memc->mddt_pg_cnt; 487 continue; 488 } 489 if (memc->mddt_usage & MDDT_PALCODE) { 490 resvmem += memc->mddt_pg_cnt; 491 continue; 492 } 493 494 /* 495 * We have a memory cluster available for system 496 * software use. We must determine if this cluster 497 * holds the kernel. 498 */ 499 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 500 /* 501 * XXX If the kernel uses the PROM console, we only use the 502 * XXX memory after the kernel in the first system segment, 503 * XXX to avoid clobbering prom mapping, data, etc. 504 */ 505 if (!pmap_uses_prom_console() || physmem == 0) { 506 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 507 physmem += memc->mddt_pg_cnt; 508 pfn0 = memc->mddt_pfn; 509 pfn1 = memc->mddt_pfn + memc->mddt_pg_cnt; 510 if (pfn0 <= kernstartpfn && kernendpfn <= pfn1) { 511 /* 512 * Must compute the location of the kernel 513 * within the segment. 514 */ 515 #if 0 516 printf("Cluster %d contains kernel\n", i); 517 #endif 518 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 519 if (!pmap_uses_prom_console()) { 520 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 521 if (pfn0 < kernstartpfn) { 522 /* 523 * There is a chunk before the kernel. 524 */ 525 #if 0 526 printf("Loading chunk before kernel: " 527 "0x%lx / 0x%lx\n", pfn0, kernstartpfn); 528 #endif 529 uvm_page_physload(pfn0, kernstartpfn, 530 pfn0, kernstartpfn, VM_FREELIST_DEFAULT); 531 } 532 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 533 } 534 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 535 if (kernendpfn < pfn1) { 536 /* 537 * There is a chunk after the kernel. 538 */ 539 #if 0 540 printf("Loading chunk after kernel: " 541 "0x%lx / 0x%lx\n", kernendpfn, pfn1); 542 #endif 543 uvm_page_physload(kernendpfn, pfn1, 544 kernendpfn, pfn1, VM_FREELIST_DEFAULT); 545 } 546 } else { 547 /* 548 * Just load this cluster as one chunk. 549 */ 550 #if 0 551 printf("Loading cluster %d: 0x%lx / 0x%lx\n", i, 552 pfn0, pfn1); 553 #endif 554 uvm_page_physload(pfn0, pfn1, pfn0, pfn1, 555 VM_FREELIST_DEFAULT); 556 } 557 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 558 } 559 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 560 } 561 562 /* 563 * Dump out the MDDT if it looks odd... 564 */ 565 if (mddtweird) { 566 printf("\n"); 567 printf("complete memory cluster information:\n"); 568 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 569 printf("mddt %d:\n", i); 570 printf("\tpfn %lx\n", 571 mddtp->mddt_clusters[i].mddt_pfn); 572 printf("\tcnt %lx\n", 573 mddtp->mddt_clusters[i].mddt_pg_cnt); 574 printf("\ttest %lx\n", 575 mddtp->mddt_clusters[i].mddt_pg_test); 576 printf("\tbva %lx\n", 577 mddtp->mddt_clusters[i].mddt_v_bitaddr); 578 printf("\tbpa %lx\n", 579 mddtp->mddt_clusters[i].mddt_p_bitaddr); 580 printf("\tbcksum %lx\n", 581 mddtp->mddt_clusters[i].mddt_bit_cksum); 582 printf("\tusage %lx\n", 583 mddtp->mddt_clusters[i].mddt_usage); 584 } 585 printf("\n"); 586 } 587 588 if (totalphysmem == 0) 589 panic("can't happen: system seems to have no memory!"); 590 maxmem = physmem; 591 #if 0 592 printf("totalphysmem = %d\n", totalphysmem); 593 printf("physmem = %d\n", physmem); 594 printf("resvmem = %d\n", resvmem); 595 printf("unusedmem = %d\n", unusedmem); 596 printf("unknownmem = %d\n", unknownmem); 597 #endif 598 599 /* 600 * Initialize error message buffer (at end of core). 601 */ 602 { 603 vsize_t sz = (vsize_t)round_page(MSGBUFSIZE); 604 vsize_t reqsz = sz; 605 606 vps = &vm_physmem[vm_nphysseg - 1]; 607 608 /* shrink so that it'll fit in the last segment */ 609 if ((vps->avail_end - vps->avail_start) < atop(sz)) 610 sz = ptoa(vps->avail_end - vps->avail_start); 611 612 vps->end -= atop(sz); 613 vps->avail_end -= atop(sz); 614 msgbufaddr = (caddr_t) ALPHA_PHYS_TO_K0SEG(ptoa(vps->end)); 615 initmsgbuf(msgbufaddr, sz); 616 617 /* Remove the last segment if it now has no pages. */ 618 if (vps->start == vps->end) 619 vm_nphysseg--; 620 621 /* warn if the message buffer had to be shrunk */ 622 if (sz != reqsz) 623 printf("WARNING: %ld bytes not available for msgbuf " 624 "in last cluster (%ld used)\n", reqsz, sz); 625 626 } 627 628 /* 629 * Init mapping for u page(s) for proc 0 630 */ 631 proc0.p_addr = proc0paddr = 632 (struct user *)pmap_steal_memory(UPAGES * PAGE_SIZE, NULL, NULL); 633 634 /* 635 * Allocate space for system data structures. These data structures 636 * are allocated here instead of cpu_startup() because physical 637 * memory is directly addressable. We don't have to map these into 638 * virtual address space. 639 */ 640 size = (vsize_t)allocsys(NULL, NULL); 641 v = (caddr_t)pmap_steal_memory(size, NULL, NULL); 642 if ((allocsys(v, NULL) - v) != size) 643 panic("alpha_init: table size inconsistency"); 644 645 /* 646 * Initialize the virtual memory system, and set the 647 * page table base register in proc 0's PCB. 648 */ 649 pmap_bootstrap(ALPHA_PHYS_TO_K0SEG(ptb << PGSHIFT), 650 hwrpb->rpb_max_asn, hwrpb->rpb_pcs_cnt); 651 652 /* 653 * Initialize the rest of proc 0's PCB, and cache its physical 654 * address. 655 */ 656 proc0.p_md.md_pcbpaddr = 657 (struct pcb *)ALPHA_K0SEG_TO_PHYS((vaddr_t)&proc0paddr->u_pcb); 658 659 /* 660 * Set the kernel sp, reserving space for an (empty) trapframe, 661 * and make proc0's trapframe pointer point to it for sanity. 662 */ 663 proc0paddr->u_pcb.pcb_hw.apcb_ksp = 664 (u_int64_t)proc0paddr + USPACE - sizeof(struct trapframe); 665 proc0.p_md.md_tf = 666 (struct trapframe *)proc0paddr->u_pcb.pcb_hw.apcb_ksp; 667 simple_lock_init(&proc0paddr->u_pcb.pcb_fpcpu_slock); 668 669 /* 670 * Initialize the primary CPU's idle PCB to proc0's. In a 671 * MULTIPROCESSOR configuration, each CPU will later get 672 * its own idle PCB when autoconfiguration runs. 673 */ 674 ci->ci_idle_pcb = &proc0paddr->u_pcb; 675 ci->ci_idle_pcb_paddr = (u_long)proc0.p_md.md_pcbpaddr; 676 677 /* Indicate that proc0 has a CPU. */ 678 proc0.p_cpu = ci; 679 680 /* 681 * Look at arguments passed to us and compute boothowto. 682 */ 683 684 boothowto = RB_SINGLE; 685 #ifdef KADB 686 boothowto |= RB_KDB; 687 #endif 688 for (p = bootinfo.boot_flags; p && *p != '\0'; p++) { 689 /* 690 * Note that we'd really like to differentiate case here, 691 * but the Alpha AXP Architecture Reference Manual 692 * says that we shouldn't. 693 */ 694 switch (*p) { 695 case 'a': /* autoboot */ 696 case 'A': 697 boothowto &= ~RB_SINGLE; 698 break; 699 700 #ifdef DEBUG 701 case 'c': /* crash dump immediately after autoconfig */ 702 case 'C': 703 boothowto |= RB_DUMP; 704 break; 705 #endif 706 707 #if defined(KGDB) || defined(DDB) 708 case 'd': /* break into the kernel debugger ASAP */ 709 case 'D': 710 boothowto |= RB_KDB; 711 break; 712 #endif 713 714 case 'h': /* always halt, never reboot */ 715 case 'H': 716 boothowto |= RB_HALT; 717 break; 718 719 #if 0 720 case 'm': /* mini root present in memory */ 721 case 'M': 722 boothowto |= RB_MINIROOT; 723 break; 724 #endif 725 726 case 'n': /* askname */ 727 case 'N': 728 boothowto |= RB_ASKNAME; 729 break; 730 731 case 's': /* single-user (default, supported for sanity) */ 732 case 'S': 733 boothowto |= RB_SINGLE; 734 break; 735 736 case 'q': /* quiet boot */ 737 case 'Q': 738 boothowto |= AB_QUIET; 739 break; 740 741 case 'v': /* verbose boot */ 742 case 'V': 743 boothowto |= AB_VERBOSE; 744 break; 745 746 case '-': 747 /* 748 * Just ignore this. It's not required, but it's 749 * common for it to be passed regardless. 750 */ 751 break; 752 753 default: 754 printf("Unrecognized boot flag '%c'.\n", *p); 755 break; 756 } 757 } 758 759 760 /* 761 * Figure out the number of cpus in the box, from RPB fields. 762 * Really. We mean it. 763 */ 764 for (i = 0; i < hwrpb->rpb_pcs_cnt; i++) { 765 struct pcs *pcsp; 766 767 pcsp = LOCATE_PCS(hwrpb, i); 768 if ((pcsp->pcs_flags & PCS_PP) != 0) 769 ncpus++; 770 } 771 772 /* 773 * Initialize debuggers, and break into them if appropriate. 774 */ 775 #ifdef DDB 776 ddb_init((int)((u_int64_t)ksym_end - (u_int64_t)ksym_start), 777 ksym_start, ksym_end); 778 #endif 779 780 if (boothowto & RB_KDB) { 781 #if defined(KGDB) 782 kgdb_debug_init = 1; 783 kgdb_connect(1); 784 #elif defined(DDB) 785 Debugger(); 786 #endif 787 } 788 789 /* 790 * Figure out our clock frequency, from RPB fields. 791 */ 792 hz = hwrpb->rpb_intr_freq >> 12; 793 if (!(60 <= hz && hz <= 10240)) { 794 hz = 1024; 795 #ifdef DIAGNOSTIC 796 printf("WARNING: unbelievable rpb_intr_freq: %ld (%d hz)\n", 797 hwrpb->rpb_intr_freq, hz); 798 #endif 799 } 800 } 801 802 void 803 consinit() 804 { 805 806 /* 807 * Everything related to console initialization is done 808 * in alpha_init(). 809 */ 810 #if defined(DIAGNOSTIC) && defined(_PMAP_MAY_USE_PROM_CONSOLE) 811 printf("consinit: %susing prom console\n", 812 pmap_uses_prom_console() ? "" : "not "); 813 #endif 814 } 815 816 #include "pckbc.h" 817 #include "pckbd.h" 818 #if (NPCKBC > 0) && (NPCKBD == 0) 819 820 #include <dev/ic/pckbcvar.h> 821 822 /* 823 * This is called by the pbkbc driver if no pckbd is configured. 824 * On the i386, it is used to glue in the old, deprecated console 825 * code. On the Alpha, it does nothing. 826 */ 827 int 828 pckbc_machdep_cnattach(kbctag, kbcslot) 829 pckbc_tag_t kbctag; 830 pckbc_slot_t kbcslot; 831 { 832 833 return (ENXIO); 834 } 835 #endif /* NPCKBC > 0 && NPCKBD == 0 */ 836 837 void 838 cpu_startup() 839 { 840 register unsigned i; 841 int base, residual; 842 vaddr_t minaddr, maxaddr; 843 vsize_t size; 844 char pbuf[9]; 845 #if defined(DEBUG) 846 extern int pmapdebug; 847 int opmapdebug = pmapdebug; 848 849 pmapdebug = 0; 850 #endif 851 852 /* 853 * Good {morning,afternoon,evening,night}. 854 */ 855 printf(version); 856 identifycpu(); 857 format_bytes(pbuf, sizeof(pbuf), ptoa(totalphysmem)); 858 printf("total memory = %s\n", pbuf); 859 format_bytes(pbuf, sizeof(pbuf), ptoa(resvmem)); 860 printf("(%s reserved for PROM, ", pbuf); 861 format_bytes(pbuf, sizeof(pbuf), ptoa(physmem)); 862 printf("%s used by NetBSD)\n", pbuf); 863 if (unusedmem) { 864 format_bytes(pbuf, sizeof(pbuf), ptoa(unusedmem)); 865 printf("WARNING: unused memory = %s\n", pbuf); 866 } 867 if (unknownmem) { 868 format_bytes(pbuf, sizeof(pbuf), ptoa(unknownmem)); 869 printf("WARNING: %s of memory with unknown purpose\n", pbuf); 870 } 871 872 /* 873 * Allocate virtual address space for file I/O buffers. 874 * Note they are different than the array of headers, 'buf', 875 * and usually occupy more virtual memory than physical. 876 */ 877 size = MAXBSIZE * nbuf; 878 if (uvm_map(kernel_map, (vaddr_t *) &buffers, round_page(size), 879 NULL, UVM_UNKNOWN_OFFSET, 0, 880 UVM_MAPFLAG(UVM_PROT_NONE, UVM_PROT_NONE, UVM_INH_NONE, 881 UVM_ADV_NORMAL, 0)) != 0) 882 panic("startup: cannot allocate VM for buffers"); 883 base = bufpages / nbuf; 884 residual = bufpages % nbuf; 885 for (i = 0; i < nbuf; i++) { 886 vsize_t curbufsize; 887 vaddr_t curbuf; 888 struct vm_page *pg; 889 890 /* 891 * Each buffer has MAXBSIZE bytes of VM space allocated. Of 892 * that MAXBSIZE space, we allocate and map (base+1) pages 893 * for the first "residual" buffers, and then we allocate 894 * "base" pages for the rest. 895 */ 896 curbuf = (vaddr_t) buffers + (i * MAXBSIZE); 897 curbufsize = NBPG * ((i < residual) ? (base+1) : base); 898 899 while (curbufsize) { 900 pg = uvm_pagealloc(NULL, 0, NULL, 0); 901 if (pg == NULL) 902 panic("cpu_startup: not enough memory for " 903 "buffer cache"); 904 pmap_kenter_pa(curbuf, VM_PAGE_TO_PHYS(pg), 905 VM_PROT_READ|VM_PROT_WRITE); 906 curbuf += PAGE_SIZE; 907 curbufsize -= PAGE_SIZE; 908 } 909 } 910 /* 911 * Allocate a submap for exec arguments. This map effectively 912 * limits the number of processes exec'ing at any time. 913 */ 914 exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 915 16 * NCARGS, VM_MAP_PAGEABLE, FALSE, NULL); 916 917 /* 918 * Allocate a submap for physio 919 */ 920 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 921 VM_PHYS_SIZE, 0, FALSE, NULL); 922 923 /* 924 * No need to allocate an mbuf cluster submap. Mbuf clusters 925 * are allocated via the pool allocator, and we use K0SEG to 926 * map those pages. 927 */ 928 929 #if defined(DEBUG) 930 pmapdebug = opmapdebug; 931 #endif 932 format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 933 printf("avail memory = %s\n", pbuf); 934 #if 0 935 { 936 extern u_long pmap_pages_stolen; 937 938 format_bytes(pbuf, sizeof(pbuf), pmap_pages_stolen * PAGE_SIZE); 939 printf("stolen memory for VM structures = %s\n", pbuf); 940 } 941 #endif 942 format_bytes(pbuf, sizeof(pbuf), bufpages * NBPG); 943 printf("using %ld buffers containing %s of memory\n", (long)nbuf, pbuf); 944 945 /* 946 * Set up buffers, so they can be used to read disk labels. 947 */ 948 bufinit(); 949 950 /* 951 * Set up the HWPCB so that it's safe to configure secondary 952 * CPUs. 953 */ 954 hwrpb_primary_init(); 955 } 956 957 /* 958 * Retrieve the platform name from the DSR. 959 */ 960 const char * 961 alpha_dsr_sysname() 962 { 963 struct dsrdb *dsr; 964 const char *sysname; 965 966 /* 967 * DSR does not exist on early HWRPB versions. 968 */ 969 if (hwrpb->rpb_version < HWRPB_DSRDB_MINVERS) 970 return (NULL); 971 972 dsr = (struct dsrdb *)(((caddr_t)hwrpb) + hwrpb->rpb_dsrdb_off); 973 sysname = (const char *)((caddr_t)dsr + (dsr->dsr_sysname_off + 974 sizeof(u_int64_t))); 975 return (sysname); 976 } 977 978 /* 979 * Lookup the system specified system variation in the provided table, 980 * returning the model string on match. 981 */ 982 const char * 983 alpha_variation_name(variation, avtp) 984 u_int64_t variation; 985 const struct alpha_variation_table *avtp; 986 { 987 int i; 988 989 for (i = 0; avtp[i].avt_model != NULL; i++) 990 if (avtp[i].avt_variation == variation) 991 return (avtp[i].avt_model); 992 return (NULL); 993 } 994 995 /* 996 * Generate a default platform name based for unknown system variations. 997 */ 998 const char * 999 alpha_unknown_sysname() 1000 { 1001 static char s[128]; /* safe size */ 1002 1003 sprintf(s, "%s family, unknown model variation 0x%lx", 1004 platform.family, hwrpb->rpb_variation & SV_ST_MASK); 1005 return ((const char *)s); 1006 } 1007 1008 void 1009 identifycpu() 1010 { 1011 char *s; 1012 int i; 1013 1014 /* 1015 * print out CPU identification information. 1016 */ 1017 printf("%s", cpu_model); 1018 for(s = cpu_model; *s; ++s) 1019 if(strncasecmp(s, "MHz", 3) == 0) 1020 goto skipMHz; 1021 printf(", %ldMHz", hwrpb->rpb_cc_freq / 1000000); 1022 skipMHz: 1023 printf(", s/n "); 1024 for (i = 0; i < 10; i++) 1025 printf("%c", hwrpb->rpb_ssn[i]); 1026 printf("\n"); 1027 printf("%ld byte page size, %d processor%s.\n", 1028 hwrpb->rpb_page_size, ncpus, ncpus == 1 ? "" : "s"); 1029 #if 0 1030 /* this isn't defined for any systems that we run on? */ 1031 printf("serial number 0x%lx 0x%lx\n", 1032 ((long *)hwrpb->rpb_ssn)[0], ((long *)hwrpb->rpb_ssn)[1]); 1033 1034 /* and these aren't particularly useful! */ 1035 printf("variation: 0x%lx, revision 0x%lx\n", 1036 hwrpb->rpb_variation, *(long *)hwrpb->rpb_revision); 1037 #endif 1038 } 1039 1040 int waittime = -1; 1041 struct pcb dumppcb; 1042 1043 void 1044 cpu_reboot(howto, bootstr) 1045 int howto; 1046 char *bootstr; 1047 { 1048 #if defined(MULTIPROCESSOR) 1049 u_long cpu_id = cpu_number(); 1050 u_long wait_mask = (1UL << cpu_id) | 1051 (1UL << hwrpb->rpb_primary_cpu_id); 1052 int i; 1053 #endif 1054 1055 /* If "always halt" was specified as a boot flag, obey. */ 1056 if ((boothowto & RB_HALT) != 0) 1057 howto |= RB_HALT; 1058 1059 boothowto = howto; 1060 1061 /* If system is cold, just halt. */ 1062 if (cold) { 1063 boothowto |= RB_HALT; 1064 goto haltsys; 1065 } 1066 1067 if ((boothowto & RB_NOSYNC) == 0 && waittime < 0) { 1068 waittime = 0; 1069 vfs_shutdown(); 1070 /* 1071 * If we've been adjusting the clock, the todr 1072 * will be out of synch; adjust it now. 1073 */ 1074 resettodr(); 1075 } 1076 1077 /* Disable interrupts. */ 1078 splhigh(); 1079 1080 #if defined(MULTIPROCESSOR) 1081 /* 1082 * Halt all other CPUs. If we're not the primary, the 1083 * primary will spin, waiting for us to halt. 1084 */ 1085 alpha_broadcast_ipi(ALPHA_IPI_HALT); 1086 1087 for (i = 0; i < 10000; i++) { 1088 alpha_mb(); 1089 if (cpus_running == wait_mask) 1090 break; 1091 delay(1000); 1092 } 1093 alpha_mb(); 1094 if (cpus_running != wait_mask) 1095 printf("WARNING: Unable to halt secondary CPUs (0x%lx)\n", 1096 cpus_running); 1097 #endif /* MULTIPROCESSOR */ 1098 1099 /* If rebooting and a dump is requested do it. */ 1100 #if 0 1101 if ((boothowto & (RB_DUMP | RB_HALT)) == RB_DUMP) 1102 #else 1103 if (boothowto & RB_DUMP) 1104 #endif 1105 dumpsys(); 1106 1107 haltsys: 1108 1109 /* run any shutdown hooks */ 1110 doshutdownhooks(); 1111 1112 #ifdef BOOTKEY 1113 printf("hit any key to %s...\n", howto & RB_HALT ? "halt" : "reboot"); 1114 cnpollc(1); /* for proper keyboard command handling */ 1115 cngetc(); 1116 cnpollc(0); 1117 printf("\n"); 1118 #endif 1119 1120 /* Finally, powerdown/halt/reboot the system. */ 1121 if ((boothowto & RB_POWERDOWN) == RB_POWERDOWN && 1122 platform.powerdown != NULL) { 1123 (*platform.powerdown)(); 1124 printf("WARNING: powerdown failed!\n"); 1125 } 1126 printf("%s\n\n", (boothowto & RB_HALT) ? "halted." : "rebooting..."); 1127 #if defined(MULTIPROCESSOR) 1128 if (cpu_id != hwrpb->rpb_primary_cpu_id) 1129 cpu_halt(); 1130 else 1131 #endif 1132 prom_halt(boothowto & RB_HALT); 1133 /*NOTREACHED*/ 1134 } 1135 1136 /* 1137 * These variables are needed by /sbin/savecore 1138 */ 1139 u_long dumpmag = 0x8fca0101; /* magic number */ 1140 int dumpsize = 0; /* pages */ 1141 long dumplo = 0; /* blocks */ 1142 1143 /* 1144 * cpu_dumpsize: calculate size of machine-dependent kernel core dump headers. 1145 */ 1146 int 1147 cpu_dumpsize() 1148 { 1149 int size; 1150 1151 size = ALIGN(sizeof(kcore_seg_t)) + ALIGN(sizeof(cpu_kcore_hdr_t)) + 1152 ALIGN(mem_cluster_cnt * sizeof(phys_ram_seg_t)); 1153 if (roundup(size, dbtob(1)) != dbtob(1)) 1154 return -1; 1155 1156 return (1); 1157 } 1158 1159 /* 1160 * cpu_dump_mempagecnt: calculate size of RAM (in pages) to be dumped. 1161 */ 1162 u_long 1163 cpu_dump_mempagecnt() 1164 { 1165 u_long i, n; 1166 1167 n = 0; 1168 for (i = 0; i < mem_cluster_cnt; i++) 1169 n += atop(mem_clusters[i].size); 1170 return (n); 1171 } 1172 1173 /* 1174 * cpu_dump: dump machine-dependent kernel core dump headers. 1175 */ 1176 int 1177 cpu_dump() 1178 { 1179 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1180 char buf[dbtob(1)]; 1181 kcore_seg_t *segp; 1182 cpu_kcore_hdr_t *cpuhdrp; 1183 phys_ram_seg_t *memsegp; 1184 int i; 1185 1186 dump = bdevsw[major(dumpdev)].d_dump; 1187 1188 bzero(buf, sizeof buf); 1189 segp = (kcore_seg_t *)buf; 1190 cpuhdrp = (cpu_kcore_hdr_t *)&buf[ALIGN(sizeof(*segp))]; 1191 memsegp = (phys_ram_seg_t *)&buf[ ALIGN(sizeof(*segp)) + 1192 ALIGN(sizeof(*cpuhdrp))]; 1193 1194 /* 1195 * Generate a segment header. 1196 */ 1197 CORE_SETMAGIC(*segp, KCORE_MAGIC, MID_MACHINE, CORE_CPU); 1198 segp->c_size = dbtob(1) - ALIGN(sizeof(*segp)); 1199 1200 /* 1201 * Add the machine-dependent header info. 1202 */ 1203 cpuhdrp->lev1map_pa = ALPHA_K0SEG_TO_PHYS((vaddr_t)kernel_lev1map); 1204 cpuhdrp->page_size = PAGE_SIZE; 1205 cpuhdrp->nmemsegs = mem_cluster_cnt; 1206 1207 /* 1208 * Fill in the memory segment descriptors. 1209 */ 1210 for (i = 0; i < mem_cluster_cnt; i++) { 1211 memsegp[i].start = mem_clusters[i].start; 1212 memsegp[i].size = mem_clusters[i].size & ~PAGE_MASK; 1213 } 1214 1215 return (dump(dumpdev, dumplo, (caddr_t)buf, dbtob(1))); 1216 } 1217 1218 /* 1219 * This is called by main to set dumplo and dumpsize. 1220 * Dumps always skip the first NBPG of disk space 1221 * in case there might be a disk label stored there. 1222 * If there is extra space, put dump at the end to 1223 * reduce the chance that swapping trashes it. 1224 */ 1225 void 1226 cpu_dumpconf() 1227 { 1228 int nblks, dumpblks; /* size of dump area */ 1229 int maj; 1230 1231 if (dumpdev == NODEV) 1232 goto bad; 1233 maj = major(dumpdev); 1234 if (maj < 0 || maj >= nblkdev) 1235 panic("dumpconf: bad dumpdev=0x%x", dumpdev); 1236 if (bdevsw[maj].d_psize == NULL) 1237 goto bad; 1238 nblks = (*bdevsw[maj].d_psize)(dumpdev); 1239 if (nblks <= ctod(1)) 1240 goto bad; 1241 1242 dumpblks = cpu_dumpsize(); 1243 if (dumpblks < 0) 1244 goto bad; 1245 dumpblks += ctod(cpu_dump_mempagecnt()); 1246 1247 /* If dump won't fit (incl. room for possible label), punt. */ 1248 if (dumpblks > (nblks - ctod(1))) 1249 goto bad; 1250 1251 /* Put dump at end of partition */ 1252 dumplo = nblks - dumpblks; 1253 1254 /* dumpsize is in page units, and doesn't include headers. */ 1255 dumpsize = cpu_dump_mempagecnt(); 1256 return; 1257 1258 bad: 1259 dumpsize = 0; 1260 return; 1261 } 1262 1263 /* 1264 * Dump the kernel's image to the swap partition. 1265 */ 1266 #define BYTES_PER_DUMP NBPG 1267 1268 void 1269 dumpsys() 1270 { 1271 u_long totalbytesleft, bytes, i, n, memcl; 1272 u_long maddr; 1273 int psize; 1274 daddr_t blkno; 1275 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1276 int error; 1277 1278 /* Save registers. */ 1279 savectx(&dumppcb); 1280 1281 if (dumpdev == NODEV) 1282 return; 1283 1284 /* 1285 * For dumps during autoconfiguration, 1286 * if dump device has already configured... 1287 */ 1288 if (dumpsize == 0) 1289 cpu_dumpconf(); 1290 if (dumplo <= 0) { 1291 printf("\ndump to dev %u,%u not possible\n", major(dumpdev), 1292 minor(dumpdev)); 1293 return; 1294 } 1295 printf("\ndumping to dev %u,%u offset %ld\n", major(dumpdev), 1296 minor(dumpdev), dumplo); 1297 1298 psize = (*bdevsw[major(dumpdev)].d_psize)(dumpdev); 1299 printf("dump "); 1300 if (psize == -1) { 1301 printf("area unavailable\n"); 1302 return; 1303 } 1304 1305 /* XXX should purge all outstanding keystrokes. */ 1306 1307 if ((error = cpu_dump()) != 0) 1308 goto err; 1309 1310 totalbytesleft = ptoa(cpu_dump_mempagecnt()); 1311 blkno = dumplo + cpu_dumpsize(); 1312 dump = bdevsw[major(dumpdev)].d_dump; 1313 error = 0; 1314 1315 for (memcl = 0; memcl < mem_cluster_cnt; memcl++) { 1316 maddr = mem_clusters[memcl].start; 1317 bytes = mem_clusters[memcl].size & ~PAGE_MASK; 1318 1319 for (i = 0; i < bytes; i += n, totalbytesleft -= n) { 1320 1321 /* Print out how many MBs we to go. */ 1322 if ((totalbytesleft % (1024*1024)) == 0) 1323 printf("%ld ", totalbytesleft / (1024 * 1024)); 1324 1325 /* Limit size for next transfer. */ 1326 n = bytes - i; 1327 if (n > BYTES_PER_DUMP) 1328 n = BYTES_PER_DUMP; 1329 1330 error = (*dump)(dumpdev, blkno, 1331 (caddr_t)ALPHA_PHYS_TO_K0SEG(maddr), n); 1332 if (error) 1333 goto err; 1334 maddr += n; 1335 blkno += btodb(n); /* XXX? */ 1336 1337 /* XXX should look for keystrokes, to cancel. */ 1338 } 1339 } 1340 1341 err: 1342 switch (error) { 1343 1344 case ENXIO: 1345 printf("device bad\n"); 1346 break; 1347 1348 case EFAULT: 1349 printf("device not ready\n"); 1350 break; 1351 1352 case EINVAL: 1353 printf("area improper\n"); 1354 break; 1355 1356 case EIO: 1357 printf("i/o error\n"); 1358 break; 1359 1360 case EINTR: 1361 printf("aborted from console\n"); 1362 break; 1363 1364 case 0: 1365 printf("succeeded\n"); 1366 break; 1367 1368 default: 1369 printf("error %d\n", error); 1370 break; 1371 } 1372 printf("\n\n"); 1373 delay(1000); 1374 } 1375 1376 void 1377 frametoreg(framep, regp) 1378 struct trapframe *framep; 1379 struct reg *regp; 1380 { 1381 1382 regp->r_regs[R_V0] = framep->tf_regs[FRAME_V0]; 1383 regp->r_regs[R_T0] = framep->tf_regs[FRAME_T0]; 1384 regp->r_regs[R_T1] = framep->tf_regs[FRAME_T1]; 1385 regp->r_regs[R_T2] = framep->tf_regs[FRAME_T2]; 1386 regp->r_regs[R_T3] = framep->tf_regs[FRAME_T3]; 1387 regp->r_regs[R_T4] = framep->tf_regs[FRAME_T4]; 1388 regp->r_regs[R_T5] = framep->tf_regs[FRAME_T5]; 1389 regp->r_regs[R_T6] = framep->tf_regs[FRAME_T6]; 1390 regp->r_regs[R_T7] = framep->tf_regs[FRAME_T7]; 1391 regp->r_regs[R_S0] = framep->tf_regs[FRAME_S0]; 1392 regp->r_regs[R_S1] = framep->tf_regs[FRAME_S1]; 1393 regp->r_regs[R_S2] = framep->tf_regs[FRAME_S2]; 1394 regp->r_regs[R_S3] = framep->tf_regs[FRAME_S3]; 1395 regp->r_regs[R_S4] = framep->tf_regs[FRAME_S4]; 1396 regp->r_regs[R_S5] = framep->tf_regs[FRAME_S5]; 1397 regp->r_regs[R_S6] = framep->tf_regs[FRAME_S6]; 1398 regp->r_regs[R_A0] = framep->tf_regs[FRAME_A0]; 1399 regp->r_regs[R_A1] = framep->tf_regs[FRAME_A1]; 1400 regp->r_regs[R_A2] = framep->tf_regs[FRAME_A2]; 1401 regp->r_regs[R_A3] = framep->tf_regs[FRAME_A3]; 1402 regp->r_regs[R_A4] = framep->tf_regs[FRAME_A4]; 1403 regp->r_regs[R_A5] = framep->tf_regs[FRAME_A5]; 1404 regp->r_regs[R_T8] = framep->tf_regs[FRAME_T8]; 1405 regp->r_regs[R_T9] = framep->tf_regs[FRAME_T9]; 1406 regp->r_regs[R_T10] = framep->tf_regs[FRAME_T10]; 1407 regp->r_regs[R_T11] = framep->tf_regs[FRAME_T11]; 1408 regp->r_regs[R_RA] = framep->tf_regs[FRAME_RA]; 1409 regp->r_regs[R_T12] = framep->tf_regs[FRAME_T12]; 1410 regp->r_regs[R_AT] = framep->tf_regs[FRAME_AT]; 1411 regp->r_regs[R_GP] = framep->tf_regs[FRAME_GP]; 1412 /* regp->r_regs[R_SP] = framep->tf_regs[FRAME_SP]; XXX */ 1413 regp->r_regs[R_ZERO] = 0; 1414 } 1415 1416 void 1417 regtoframe(regp, framep) 1418 struct reg *regp; 1419 struct trapframe *framep; 1420 { 1421 1422 framep->tf_regs[FRAME_V0] = regp->r_regs[R_V0]; 1423 framep->tf_regs[FRAME_T0] = regp->r_regs[R_T0]; 1424 framep->tf_regs[FRAME_T1] = regp->r_regs[R_T1]; 1425 framep->tf_regs[FRAME_T2] = regp->r_regs[R_T2]; 1426 framep->tf_regs[FRAME_T3] = regp->r_regs[R_T3]; 1427 framep->tf_regs[FRAME_T4] = regp->r_regs[R_T4]; 1428 framep->tf_regs[FRAME_T5] = regp->r_regs[R_T5]; 1429 framep->tf_regs[FRAME_T6] = regp->r_regs[R_T6]; 1430 framep->tf_regs[FRAME_T7] = regp->r_regs[R_T7]; 1431 framep->tf_regs[FRAME_S0] = regp->r_regs[R_S0]; 1432 framep->tf_regs[FRAME_S1] = regp->r_regs[R_S1]; 1433 framep->tf_regs[FRAME_S2] = regp->r_regs[R_S2]; 1434 framep->tf_regs[FRAME_S3] = regp->r_regs[R_S3]; 1435 framep->tf_regs[FRAME_S4] = regp->r_regs[R_S4]; 1436 framep->tf_regs[FRAME_S5] = regp->r_regs[R_S5]; 1437 framep->tf_regs[FRAME_S6] = regp->r_regs[R_S6]; 1438 framep->tf_regs[FRAME_A0] = regp->r_regs[R_A0]; 1439 framep->tf_regs[FRAME_A1] = regp->r_regs[R_A1]; 1440 framep->tf_regs[FRAME_A2] = regp->r_regs[R_A2]; 1441 framep->tf_regs[FRAME_A3] = regp->r_regs[R_A3]; 1442 framep->tf_regs[FRAME_A4] = regp->r_regs[R_A4]; 1443 framep->tf_regs[FRAME_A5] = regp->r_regs[R_A5]; 1444 framep->tf_regs[FRAME_T8] = regp->r_regs[R_T8]; 1445 framep->tf_regs[FRAME_T9] = regp->r_regs[R_T9]; 1446 framep->tf_regs[FRAME_T10] = regp->r_regs[R_T10]; 1447 framep->tf_regs[FRAME_T11] = regp->r_regs[R_T11]; 1448 framep->tf_regs[FRAME_RA] = regp->r_regs[R_RA]; 1449 framep->tf_regs[FRAME_T12] = regp->r_regs[R_T12]; 1450 framep->tf_regs[FRAME_AT] = regp->r_regs[R_AT]; 1451 framep->tf_regs[FRAME_GP] = regp->r_regs[R_GP]; 1452 /* framep->tf_regs[FRAME_SP] = regp->r_regs[R_SP]; XXX */ 1453 /* ??? = regp->r_regs[R_ZERO]; */ 1454 } 1455 1456 void 1457 printregs(regp) 1458 struct reg *regp; 1459 { 1460 int i; 1461 1462 for (i = 0; i < 32; i++) 1463 printf("R%d:\t0x%016lx%s", i, regp->r_regs[i], 1464 i & 1 ? "\n" : "\t"); 1465 } 1466 1467 void 1468 regdump(framep) 1469 struct trapframe *framep; 1470 { 1471 struct reg reg; 1472 1473 frametoreg(framep, ®); 1474 reg.r_regs[R_SP] = alpha_pal_rdusp(); 1475 1476 printf("REGISTERS:\n"); 1477 printregs(®); 1478 } 1479 1480 1481 /* 1482 * Send an interrupt to process. 1483 */ 1484 void 1485 sendsig(catcher, sig, mask, code) 1486 sig_t catcher; 1487 int sig; 1488 sigset_t *mask; 1489 u_long code; 1490 { 1491 struct proc *p = curproc; 1492 struct sigcontext *scp, ksc; 1493 struct trapframe *frame; 1494 int onstack, fsize, rndfsize; 1495 1496 frame = p->p_md.md_tf; 1497 1498 /* Do we need to jump onto the signal stack? */ 1499 onstack = 1500 (p->p_sigctx.ps_sigstk.ss_flags & (SS_DISABLE | SS_ONSTACK)) == 0 && 1501 (SIGACTION(p, sig).sa_flags & SA_ONSTACK) != 0; 1502 1503 /* Allocate space for the signal handler context. */ 1504 fsize = sizeof(ksc); 1505 rndfsize = ((fsize + 15) / 16) * 16; 1506 1507 if (onstack) 1508 scp = (struct sigcontext *)((caddr_t)p->p_sigctx.ps_sigstk.ss_sp + 1509 p->p_sigctx.ps_sigstk.ss_size); 1510 else 1511 scp = (struct sigcontext *)(alpha_pal_rdusp()); 1512 scp = (struct sigcontext *)((caddr_t)scp - rndfsize); 1513 1514 #ifdef DEBUG 1515 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1516 printf("sendsig(%d): sig %d ssp %p usp %p\n", p->p_pid, 1517 sig, &onstack, scp); 1518 #endif 1519 1520 /* Build stack frame for signal trampoline. */ 1521 ksc.sc_pc = frame->tf_regs[FRAME_PC]; 1522 ksc.sc_ps = frame->tf_regs[FRAME_PS]; 1523 1524 /* Save register context. */ 1525 frametoreg(frame, (struct reg *)ksc.sc_regs); 1526 ksc.sc_regs[R_ZERO] = 0xACEDBADE; /* magic number */ 1527 ksc.sc_regs[R_SP] = alpha_pal_rdusp(); 1528 1529 /* save the floating-point state, if necessary, then copy it. */ 1530 if (p->p_addr->u_pcb.pcb_fpcpu != NULL) 1531 fpusave_proc(p, 1); 1532 ksc.sc_ownedfp = p->p_md.md_flags & MDP_FPUSED; 1533 bcopy(&p->p_addr->u_pcb.pcb_fp, (struct fpreg *)ksc.sc_fpregs, 1534 sizeof(struct fpreg)); 1535 ksc.sc_fp_control = 0; /* XXX ? */ 1536 bzero(ksc.sc_reserved, sizeof ksc.sc_reserved); /* XXX */ 1537 bzero(ksc.sc_xxx, sizeof ksc.sc_xxx); /* XXX */ 1538 1539 /* Save signal stack. */ 1540 ksc.sc_onstack = p->p_sigctx.ps_sigstk.ss_flags & SS_ONSTACK; 1541 1542 /* Save signal mask. */ 1543 ksc.sc_mask = *mask; 1544 1545 #ifdef COMPAT_13 1546 /* 1547 * XXX We always have to save an old style signal mask because 1548 * XXX we might be delivering a signal to a process which will 1549 * XXX escape from the signal in a non-standard way and invoke 1550 * XXX sigreturn() directly. 1551 */ 1552 { 1553 /* Note: it's a long in the stack frame. */ 1554 sigset13_t mask13; 1555 1556 native_sigset_to_sigset13(mask, &mask13); 1557 ksc.__sc_mask13 = mask13; 1558 } 1559 #endif 1560 1561 #ifdef COMPAT_OSF1 1562 /* 1563 * XXX Create an OSF/1-style sigcontext and associated goo. 1564 */ 1565 #endif 1566 1567 if (copyout(&ksc, (caddr_t)scp, fsize) != 0) { 1568 /* 1569 * Process has trashed its stack; give it an illegal 1570 * instruction to halt it in its tracks. 1571 */ 1572 #ifdef DEBUG 1573 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1574 printf("sendsig(%d): copyout failed on sig %d\n", 1575 p->p_pid, sig); 1576 #endif 1577 sigexit(p, SIGILL); 1578 /* NOTREACHED */ 1579 } 1580 #ifdef DEBUG 1581 if (sigdebug & SDB_FOLLOW) 1582 printf("sendsig(%d): sig %d scp %p code %lx\n", p->p_pid, sig, 1583 scp, code); 1584 #endif 1585 1586 /* Set up the registers to return to sigcode. */ 1587 frame->tf_regs[FRAME_PC] = (u_int64_t)p->p_sigctx.ps_sigcode; 1588 frame->tf_regs[FRAME_A0] = sig; 1589 frame->tf_regs[FRAME_A1] = code; 1590 frame->tf_regs[FRAME_A2] = (u_int64_t)scp; 1591 frame->tf_regs[FRAME_T12] = (u_int64_t)catcher; /* t12 is pv */ 1592 alpha_pal_wrusp((unsigned long)scp); 1593 1594 /* Remember that we're now on the signal stack. */ 1595 if (onstack) 1596 p->p_sigctx.ps_sigstk.ss_flags |= SS_ONSTACK; 1597 1598 #ifdef DEBUG 1599 if (sigdebug & SDB_FOLLOW) 1600 printf("sendsig(%d): pc %lx, catcher %lx\n", p->p_pid, 1601 frame->tf_regs[FRAME_PC], frame->tf_regs[FRAME_A3]); 1602 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1603 printf("sendsig(%d): sig %d returns\n", 1604 p->p_pid, sig); 1605 #endif 1606 } 1607 1608 /* 1609 * System call to cleanup state after a signal 1610 * has been taken. Reset signal mask and 1611 * stack state from context left by sendsig (above). 1612 * Return to previous pc and psl as specified by 1613 * context left by sendsig. Check carefully to 1614 * make sure that the user has not modified the 1615 * psl to gain improper privileges or to cause 1616 * a machine fault. 1617 */ 1618 /* ARGSUSED */ 1619 int 1620 sys___sigreturn14(p, v, retval) 1621 struct proc *p; 1622 void *v; 1623 register_t *retval; 1624 { 1625 struct sys___sigreturn14_args /* { 1626 syscallarg(struct sigcontext *) sigcntxp; 1627 } */ *uap = v; 1628 struct sigcontext *scp, ksc; 1629 1630 /* 1631 * The trampoline code hands us the context. 1632 * It is unsafe to keep track of it ourselves, in the event that a 1633 * program jumps out of a signal handler. 1634 */ 1635 scp = SCARG(uap, sigcntxp); 1636 #ifdef DEBUG 1637 if (sigdebug & SDB_FOLLOW) 1638 printf("sigreturn: pid %d, scp %p\n", p->p_pid, scp); 1639 #endif 1640 if (ALIGN(scp) != (u_int64_t)scp) 1641 return (EINVAL); 1642 1643 if (copyin((caddr_t)scp, &ksc, sizeof(ksc)) != 0) 1644 return (EFAULT); 1645 1646 if (ksc.sc_regs[R_ZERO] != 0xACEDBADE) /* magic number */ 1647 return (EINVAL); 1648 1649 /* Restore register context. */ 1650 p->p_md.md_tf->tf_regs[FRAME_PC] = ksc.sc_pc; 1651 p->p_md.md_tf->tf_regs[FRAME_PS] = 1652 (ksc.sc_ps | ALPHA_PSL_USERSET) & ~ALPHA_PSL_USERCLR; 1653 1654 regtoframe((struct reg *)ksc.sc_regs, p->p_md.md_tf); 1655 alpha_pal_wrusp(ksc.sc_regs[R_SP]); 1656 1657 /* XXX ksc.sc_ownedfp ? */ 1658 if (p->p_addr->u_pcb.pcb_fpcpu != NULL) 1659 fpusave_proc(p, 0); 1660 bcopy((struct fpreg *)ksc.sc_fpregs, &p->p_addr->u_pcb.pcb_fp, 1661 sizeof(struct fpreg)); 1662 /* XXX ksc.sc_fp_control ? */ 1663 1664 /* Restore signal stack. */ 1665 if (ksc.sc_onstack & SS_ONSTACK) 1666 p->p_sigctx.ps_sigstk.ss_flags |= SS_ONSTACK; 1667 else 1668 p->p_sigctx.ps_sigstk.ss_flags &= ~SS_ONSTACK; 1669 1670 /* Restore signal mask. */ 1671 (void) sigprocmask1(p, SIG_SETMASK, &ksc.sc_mask, 0); 1672 1673 #ifdef DEBUG 1674 if (sigdebug & SDB_FOLLOW) 1675 printf("sigreturn(%d): returns\n", p->p_pid); 1676 #endif 1677 return (EJUSTRETURN); 1678 } 1679 1680 /* 1681 * machine dependent system variables. 1682 */ 1683 int 1684 cpu_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 1685 int *name; 1686 u_int namelen; 1687 void *oldp; 1688 size_t *oldlenp; 1689 void *newp; 1690 size_t newlen; 1691 struct proc *p; 1692 { 1693 dev_t consdev; 1694 1695 /* all sysctl names at this level are terminal */ 1696 if (namelen != 1) 1697 return (ENOTDIR); /* overloaded */ 1698 1699 switch (name[0]) { 1700 case CPU_CONSDEV: 1701 if (cn_tab != NULL) 1702 consdev = cn_tab->cn_dev; 1703 else 1704 consdev = NODEV; 1705 return (sysctl_rdstruct(oldp, oldlenp, newp, &consdev, 1706 sizeof consdev)); 1707 1708 case CPU_ROOT_DEVICE: 1709 return (sysctl_rdstring(oldp, oldlenp, newp, 1710 root_device->dv_xname)); 1711 1712 case CPU_UNALIGNED_PRINT: 1713 return (sysctl_int(oldp, oldlenp, newp, newlen, 1714 &alpha_unaligned_print)); 1715 1716 case CPU_UNALIGNED_FIX: 1717 return (sysctl_int(oldp, oldlenp, newp, newlen, 1718 &alpha_unaligned_fix)); 1719 1720 case CPU_UNALIGNED_SIGBUS: 1721 return (sysctl_int(oldp, oldlenp, newp, newlen, 1722 &alpha_unaligned_sigbus)); 1723 1724 case CPU_BOOTED_KERNEL: 1725 return (sysctl_rdstring(oldp, oldlenp, newp, 1726 bootinfo.booted_kernel)); 1727 1728 default: 1729 return (EOPNOTSUPP); 1730 } 1731 /* NOTREACHED */ 1732 } 1733 1734 /* 1735 * Set registers on exec. 1736 */ 1737 void 1738 setregs(p, pack, stack) 1739 register struct proc *p; 1740 struct exec_package *pack; 1741 u_long stack; 1742 { 1743 struct trapframe *tfp = p->p_md.md_tf; 1744 #ifdef DEBUG 1745 int i; 1746 #endif 1747 1748 #ifdef DEBUG 1749 /* 1750 * Crash and dump, if the user requested it. 1751 */ 1752 if (boothowto & RB_DUMP) 1753 panic("crash requested by boot flags"); 1754 #endif 1755 1756 #ifdef DEBUG 1757 for (i = 0; i < FRAME_SIZE; i++) 1758 tfp->tf_regs[i] = 0xbabefacedeadbeef; 1759 #else 1760 bzero(tfp->tf_regs, FRAME_SIZE * sizeof tfp->tf_regs[0]); 1761 #endif 1762 bzero(&p->p_addr->u_pcb.pcb_fp, sizeof p->p_addr->u_pcb.pcb_fp); 1763 p->p_addr->u_pcb.pcb_fp.fpr_cr = FPCR_INED 1764 | FPCR_UNFD 1765 | FPCR_UNDZ 1766 | FPCR_DYN(FP_RN) 1767 | FPCR_OVFD 1768 | FPCR_DZED 1769 | FPCR_INVD 1770 | FPCR_DNZ; 1771 alpha_pal_wrusp(stack); 1772 tfp->tf_regs[FRAME_PS] = ALPHA_PSL_USERSET; 1773 tfp->tf_regs[FRAME_PC] = pack->ep_entry & ~3; 1774 1775 tfp->tf_regs[FRAME_A0] = stack; /* a0 = sp */ 1776 tfp->tf_regs[FRAME_A1] = 0; /* a1 = rtld cleanup */ 1777 tfp->tf_regs[FRAME_A2] = 0; /* a2 = rtld object */ 1778 tfp->tf_regs[FRAME_A3] = (u_int64_t)PS_STRINGS; /* a3 = ps_strings */ 1779 tfp->tf_regs[FRAME_T12] = tfp->tf_regs[FRAME_PC]; /* a.k.a. PV */ 1780 1781 p->p_md.md_flags &= ~MDP_FPUSED; 1782 if (p->p_addr->u_pcb.pcb_fpcpu != NULL) 1783 fpusave_proc(p, 0); 1784 } 1785 1786 /* 1787 * Release the FPU. 1788 */ 1789 void 1790 fpusave_cpu(struct cpu_info *ci, int save) 1791 { 1792 struct proc *p; 1793 #if defined(MULTIPROCESSOR) 1794 int s; 1795 #endif 1796 1797 KDASSERT(ci == curcpu()); 1798 1799 #if defined(MULTIPROCESSOR) 1800 atomic_setbits_ulong(&ci->ci_flags, CPUF_FPUSAVE); 1801 #endif 1802 1803 p = ci->ci_fpcurproc; 1804 if (p == NULL) 1805 goto out; 1806 1807 if (save) { 1808 alpha_pal_wrfen(1); 1809 savefpstate(&p->p_addr->u_pcb.pcb_fp); 1810 } 1811 1812 alpha_pal_wrfen(0); 1813 1814 FPCPU_LOCK(&p->p_addr->u_pcb, s); 1815 1816 p->p_addr->u_pcb.pcb_fpcpu = NULL; 1817 ci->ci_fpcurproc = NULL; 1818 1819 FPCPU_UNLOCK(&p->p_addr->u_pcb, s); 1820 1821 out: 1822 #if defined(MULTIPROCESSOR) 1823 atomic_clearbits_ulong(&ci->ci_flags, CPUF_FPUSAVE); 1824 #endif 1825 return; 1826 } 1827 1828 /* 1829 * Synchronize FP state for this process. 1830 */ 1831 void 1832 fpusave_proc(struct proc *p, int save) 1833 { 1834 struct cpu_info *ci = curcpu(); 1835 struct cpu_info *oci; 1836 #if defined(MULTIPROCESSOR) 1837 u_long ipi = save ? ALPHA_IPI_SYNCH_FPU : ALPHA_IPI_DISCARD_FPU; 1838 int s, spincount; 1839 #endif 1840 1841 KDASSERT(p->p_addr != NULL); 1842 KDASSERT(p->p_flag & P_INMEM); 1843 1844 FPCPU_LOCK(&p->p_addr->u_pcb, s); 1845 1846 oci = p->p_addr->u_pcb.pcb_fpcpu; 1847 if (oci == NULL) { 1848 FPCPU_UNLOCK(&p->p_addr->u_pcb, s); 1849 return; 1850 } 1851 1852 #if defined(MULTIPROCESSOR) 1853 if (oci == ci) { 1854 KASSERT(ci->ci_fpcurproc == p); 1855 FPCPU_UNLOCK(&p->p_addr->u_pcb, s); 1856 fpusave_cpu(ci, save); 1857 return; 1858 } 1859 1860 KASSERT(oci->ci_fpcurproc == p); 1861 alpha_send_ipi(oci->ci_cpuid, ipi); 1862 FPCPU_UNLOCK(&p->p_addr->u_pcb, s); 1863 1864 spincount = 0; 1865 while (p->p_addr->u_pcb.pcb_fpcpu != NULL) { 1866 spincount++; 1867 delay(1000); /* XXX */ 1868 if (spincount > 10000) 1869 panic("fpsave ipi didn't"); 1870 } 1871 #else 1872 KASSERT(ci->ci_fpcurproc == p); 1873 FPCPU_UNLOCK(&p->p_addr->u_pcb, s); 1874 fpusave_cpu(ci, save); 1875 #endif /* MULTIPROCESSOR */ 1876 } 1877 1878 /* 1879 * The following primitives manipulate the run queues. _whichqs tells which 1880 * of the 32 queues _qs have processes in them. Setrunqueue puts processes 1881 * into queues, Remrunqueue removes them from queues. The running process is 1882 * on no queue, other processes are on a queue related to p->p_priority, 1883 * divided by 4 actually to shrink the 0-127 range of priorities into the 32 1884 * available queues. 1885 */ 1886 /* 1887 * setrunqueue(p) 1888 * proc *p; 1889 * 1890 * Call should be made at splclock(), and p->p_stat should be SRUN. 1891 */ 1892 1893 void 1894 setrunqueue(p) 1895 struct proc *p; 1896 { 1897 int bit; 1898 1899 /* firewall: p->p_back must be NULL */ 1900 if (p->p_back != NULL) 1901 panic("setrunqueue"); 1902 1903 bit = p->p_priority >> 2; 1904 sched_whichqs |= (1 << bit); 1905 p->p_forw = (struct proc *)&sched_qs[bit]; 1906 p->p_back = sched_qs[bit].ph_rlink; 1907 p->p_back->p_forw = p; 1908 sched_qs[bit].ph_rlink = p; 1909 } 1910 1911 /* 1912 * remrunqueue(p) 1913 * 1914 * Call should be made at splclock(). 1915 */ 1916 void 1917 remrunqueue(p) 1918 struct proc *p; 1919 { 1920 int bit; 1921 1922 bit = p->p_priority >> 2; 1923 if ((sched_whichqs & (1 << bit)) == 0) 1924 panic("remrunqueue"); 1925 1926 p->p_back->p_forw = p->p_forw; 1927 p->p_forw->p_back = p->p_back; 1928 p->p_back = NULL; /* for firewall checking. */ 1929 1930 if ((struct proc *)&sched_qs[bit] == sched_qs[bit].ph_link) 1931 sched_whichqs &= ~(1 << bit); 1932 } 1933 1934 /* 1935 * Return the best possible estimate of the time in the timeval 1936 * to which tvp points. Unfortunately, we can't read the hardware registers. 1937 * We guarantee that the time will be greater than the value obtained by a 1938 * previous call. 1939 * 1940 * XXX PLEASE REWRITE ME TO USE THE CYCLE COUNTER AND DEAL WITH 1941 * XXX MULTIPLE CPUs IN A SANE WAY! 1942 */ 1943 void 1944 microtime(tvp) 1945 register struct timeval *tvp; 1946 { 1947 static struct timeval lasttime; 1948 static struct simplelock microtime_slock = SIMPLELOCK_INITIALIZER; 1949 int s; 1950 1951 s = splclock(); 1952 simple_lock(µtime_slock); 1953 1954 *tvp = time; 1955 #ifdef notdef 1956 tvp->tv_usec += clkread(); 1957 while (tvp->tv_usec >= 1000000) { 1958 tvp->tv_sec++; 1959 tvp->tv_usec -= 1000000; 1960 } 1961 #endif 1962 if (tvp->tv_sec == lasttime.tv_sec && 1963 tvp->tv_usec <= lasttime.tv_usec && 1964 (tvp->tv_usec = lasttime.tv_usec + 1) >= 1000000) { 1965 tvp->tv_sec++; 1966 tvp->tv_usec -= 1000000; 1967 } 1968 lasttime = *tvp; 1969 1970 simple_unlock(µtime_slock); 1971 splx(s); 1972 } 1973 1974 /* 1975 * Wait "n" microseconds. 1976 */ 1977 void 1978 delay(n) 1979 unsigned long n; 1980 { 1981 unsigned long pcc0, pcc1, curcycle, cycles, usec; 1982 1983 if (n == 0) 1984 return; 1985 1986 pcc0 = alpha_rpcc() & 0xffffffffUL; 1987 cycles = 0; 1988 usec = 0; 1989 1990 while (usec <= n) { 1991 /* 1992 * Get the next CPU cycle count- assumes that we cannot 1993 * have had more than one 32 bit overflow. 1994 */ 1995 pcc1 = alpha_rpcc() & 0xffffffffUL; 1996 if (pcc1 < pcc0) 1997 curcycle = (pcc1 + 0x100000000UL) - pcc0; 1998 else 1999 curcycle = pcc1 - pcc0; 2000 2001 /* 2002 * We now have the number of processor cycles since we 2003 * last checked. Add the current cycle count to the 2004 * running total. If it's over cycles_per_usec, increment 2005 * the usec counter. 2006 */ 2007 cycles += curcycle; 2008 while (cycles > cycles_per_usec) { 2009 usec++; 2010 cycles -= cycles_per_usec; 2011 } 2012 pcc0 = pcc1; 2013 } 2014 } 2015 2016 #if defined(COMPAT_OSF1) || 1 /* XXX */ 2017 void cpu_exec_ecoff_setregs __P((struct proc *, struct exec_package *, 2018 u_long)); 2019 #endif 2020 2021 #if 1 /* XXX */ 2022 void 2023 cpu_exec_ecoff_setregs(p, epp, stack) 2024 struct proc *p; 2025 struct exec_package *epp; 2026 u_long stack; 2027 { 2028 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2029 2030 setregs(p, epp, stack); 2031 p->p_md.md_tf->tf_regs[FRAME_GP] = execp->a.gp_value; 2032 } 2033 2034 /* 2035 * cpu_exec_ecoff_hook(): 2036 * cpu-dependent ECOFF format hook for execve(). 2037 * 2038 * Do any machine-dependent diddling of the exec package when doing ECOFF. 2039 * 2040 */ 2041 int 2042 cpu_exec_ecoff_probe(p, epp) 2043 struct proc *p; 2044 struct exec_package *epp; 2045 { 2046 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2047 int error; 2048 2049 if (execp->f.f_magic == ECOFF_MAGIC_NETBSD_ALPHA) 2050 error = 0; 2051 else 2052 error = ENOEXEC; 2053 2054 return (error); 2055 } 2056 #endif 2057 2058 int 2059 alpha_pa_access(pa) 2060 u_long pa; 2061 { 2062 int i; 2063 2064 for (i = 0; i < mem_cluster_cnt; i++) { 2065 if (pa < mem_clusters[i].start) 2066 continue; 2067 if ((pa - mem_clusters[i].start) >= 2068 (mem_clusters[i].size & ~PAGE_MASK)) 2069 continue; 2070 return (mem_clusters[i].size & PAGE_MASK); /* prot */ 2071 } 2072 2073 /* 2074 * Address is not a memory address. If we're secure, disallow 2075 * access. Otherwise, grant read/write. 2076 */ 2077 if (securelevel > 0) 2078 return (PROT_NONE); 2079 else 2080 return (PROT_READ | PROT_WRITE); 2081 } 2082 2083 /* XXX XXX BEGIN XXX XXX */ 2084 paddr_t alpha_XXX_dmamap_or; /* XXX */ 2085 /* XXX */ 2086 paddr_t /* XXX */ 2087 alpha_XXX_dmamap(v) /* XXX */ 2088 vaddr_t v; /* XXX */ 2089 { /* XXX */ 2090 /* XXX */ 2091 return (vtophys(v) | alpha_XXX_dmamap_or); /* XXX */ 2092 } /* XXX */ 2093 /* XXX XXX END XXX XXX */ 2094 2095 char * 2096 dot_conv(x) 2097 unsigned long x; 2098 { 2099 int i; 2100 char *xc; 2101 static int next; 2102 static char space[2][20]; 2103 2104 xc = space[next ^= 1] + sizeof space[0]; 2105 *--xc = '\0'; 2106 for (i = 0;; ++i) { 2107 if (i && (i & 3) == 0) 2108 *--xc = '.'; 2109 *--xc = "0123456789abcdef"[x & 0xf]; 2110 x >>= 4; 2111 if (x == 0) 2112 break; 2113 } 2114 return xc; 2115 } 2116
Indexes created Fri Oct 03 02:09:57 GMT 2025