machdep.c revision 1.229
1 /* $NetBSD: machdep.c,v 1.229 2000/12/27 23:47:59 sommerfeld 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 1.229 2000/12/27 23:47:59 sommerfeld 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 DEBUG 127 #include <machine/sigdebug.h> 128 #endif 129 130 #include <machine/alpha.h> 131 132 vm_map_t exec_map = NULL; 133 vm_map_t mb_map = NULL; 134 vm_map_t phys_map = NULL; 135 136 caddr_t msgbufaddr; 137 138 int maxmem; /* max memory per process */ 139 140 int totalphysmem; /* total amount of physical memory in system */ 141 int physmem; /* physical memory used by NetBSD + some rsvd */ 142 int resvmem; /* amount of memory reserved for PROM */ 143 int unusedmem; /* amount of memory for OS that we don't use */ 144 int unknownmem; /* amount of memory with an unknown use */ 145 146 int cputype; /* system type, from the RPB */ 147 148 int bootdev_debug = 0; /* patchable, or from DDB */ 149 150 /* 151 * XXX We need an address to which we can assign things so that they 152 * won't be optimized away because we didn't use the value. 153 */ 154 u_int32_t no_optimize; 155 156 /* the following is used externally (sysctl_hw) */ 157 char machine[] = MACHINE; /* from <machine/param.h> */ 158 char machine_arch[] = MACHINE_ARCH; /* from <machine/param.h> */ 159 char cpu_model[128]; 160 161 struct user *proc0paddr; 162 163 /* Number of machine cycles per microsecond */ 164 u_int64_t cycles_per_usec; 165 166 /* number of cpus in the box. really! */ 167 int ncpus; 168 169 struct bootinfo_kernel bootinfo; 170 171 /* For built-in TCDS */ 172 #if defined(DEC_3000_300) || defined(DEC_3000_500) 173 u_int8_t dec_3000_scsiid[2], dec_3000_scsifast[2]; 174 #endif 175 176 struct platform platform; 177 178 #ifdef DDB 179 /* start and end of kernel symbol table */ 180 void *ksym_start, *ksym_end; 181 #endif 182 183 /* for cpu_sysctl() */ 184 int alpha_unaligned_print = 1; /* warn about unaligned accesses */ 185 int alpha_unaligned_fix = 1; /* fix up unaligned accesses */ 186 int alpha_unaligned_sigbus = 0; /* don't SIGBUS on fixed-up accesses */ 187 188 /* 189 * XXX This should be dynamically sized, but we have the chicken-egg problem! 190 * XXX it should also be larger than it is, because not all of the mddt 191 * XXX clusters end up being used for VM. 192 */ 193 phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX]; /* low size bits overloaded */ 194 int mem_cluster_cnt; 195 196 int cpu_dump __P((void)); 197 int cpu_dumpsize __P((void)); 198 u_long cpu_dump_mempagecnt __P((void)); 199 void dumpsys __P((void)); 200 void identifycpu __P((void)); 201 void printregs __P((struct reg *)); 202 203 void 204 alpha_init(pfn, ptb, bim, bip, biv) 205 u_long pfn; /* first free PFN number */ 206 u_long ptb; /* PFN of current level 1 page table */ 207 u_long bim; /* bootinfo magic */ 208 u_long bip; /* bootinfo pointer */ 209 u_long biv; /* bootinfo version */ 210 { 211 extern char kernel_text[], _end[]; 212 struct mddt *mddtp; 213 struct mddt_cluster *memc; 214 int i, mddtweird; 215 struct vm_physseg *vps; 216 vaddr_t kernstart, kernend; 217 paddr_t kernstartpfn, kernendpfn, pfn0, pfn1; 218 vsize_t size; 219 cpuid_t cpu_id; 220 struct cpu_info *ci; 221 char *p; 222 caddr_t v; 223 const char *bootinfo_msg; 224 const struct cpuinit *c; 225 226 /* NO OUTPUT ALLOWED UNTIL FURTHER NOTICE */ 227 228 /* 229 * Turn off interrupts (not mchecks) and floating point. 230 * Make sure the instruction and data streams are consistent. 231 */ 232 (void)alpha_pal_swpipl(ALPHA_PSL_IPL_HIGH); 233 alpha_pal_wrfen(0); 234 ALPHA_TBIA(); 235 alpha_pal_imb(); 236 237 cpu_id = cpu_number(); 238 239 #if defined(MULTIPROCESSOR) 240 /* 241 * Set our SysValue to the address of our cpu_info structure. 242 * Secondary processors do this in their spinup trampoline. 243 */ 244 alpha_pal_wrval((u_long)&cpu_info[cpu_id]); 245 #endif 246 247 ci = curcpu(); 248 ci->ci_cpuid = cpu_id; 249 250 /* 251 * Get critical system information (if possible, from the 252 * information provided by the boot program). 253 */ 254 bootinfo_msg = NULL; 255 if (bim == BOOTINFO_MAGIC) { 256 if (biv == 0) { /* backward compat */ 257 biv = *(u_long *)bip; 258 bip += 8; 259 } 260 switch (biv) { 261 case 1: { 262 struct bootinfo_v1 *v1p = (struct bootinfo_v1 *)bip; 263 264 bootinfo.ssym = v1p->ssym; 265 bootinfo.esym = v1p->esym; 266 /* hwrpb may not be provided by boot block in v1 */ 267 if (v1p->hwrpb != NULL) { 268 bootinfo.hwrpb_phys = 269 ((struct rpb *)v1p->hwrpb)->rpb_phys; 270 bootinfo.hwrpb_size = v1p->hwrpbsize; 271 } else { 272 bootinfo.hwrpb_phys = 273 ((struct rpb *)HWRPB_ADDR)->rpb_phys; 274 bootinfo.hwrpb_size = 275 ((struct rpb *)HWRPB_ADDR)->rpb_size; 276 } 277 bcopy(v1p->boot_flags, bootinfo.boot_flags, 278 min(sizeof v1p->boot_flags, 279 sizeof bootinfo.boot_flags)); 280 bcopy(v1p->booted_kernel, bootinfo.booted_kernel, 281 min(sizeof v1p->booted_kernel, 282 sizeof bootinfo.booted_kernel)); 283 /* booted dev not provided in bootinfo */ 284 init_prom_interface((struct rpb *) 285 ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys)); 286 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 287 sizeof bootinfo.booted_dev); 288 break; 289 } 290 default: 291 bootinfo_msg = "unknown bootinfo version"; 292 goto nobootinfo; 293 } 294 } else { 295 bootinfo_msg = "boot program did not pass bootinfo"; 296 nobootinfo: 297 bootinfo.ssym = (u_long)_end; 298 bootinfo.esym = (u_long)_end; 299 bootinfo.hwrpb_phys = ((struct rpb *)HWRPB_ADDR)->rpb_phys; 300 bootinfo.hwrpb_size = ((struct rpb *)HWRPB_ADDR)->rpb_size; 301 init_prom_interface((struct rpb *)HWRPB_ADDR); 302 prom_getenv(PROM_E_BOOTED_OSFLAGS, bootinfo.boot_flags, 303 sizeof bootinfo.boot_flags); 304 prom_getenv(PROM_E_BOOTED_FILE, bootinfo.booted_kernel, 305 sizeof bootinfo.booted_kernel); 306 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 307 sizeof bootinfo.booted_dev); 308 } 309 310 /* 311 * Initialize the kernel's mapping of the RPB. It's needed for 312 * lots of things. 313 */ 314 hwrpb = (struct rpb *)ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys); 315 316 #if defined(DEC_3000_300) || defined(DEC_3000_500) 317 if (hwrpb->rpb_type == ST_DEC_3000_300 || 318 hwrpb->rpb_type == ST_DEC_3000_500) { 319 prom_getenv(PROM_E_SCSIID, dec_3000_scsiid, 320 sizeof(dec_3000_scsiid)); 321 prom_getenv(PROM_E_SCSIFAST, dec_3000_scsifast, 322 sizeof(dec_3000_scsifast)); 323 } 324 #endif 325 326 /* 327 * Remember how many cycles there are per microsecond, 328 * so that we can use delay(). Round up, for safety. 329 */ 330 cycles_per_usec = (hwrpb->rpb_cc_freq + 999999) / 1000000; 331 332 /* 333 * Initalize the (temporary) bootstrap console interface, so 334 * we can use printf until the VM system starts being setup. 335 * The real console is initialized before then. 336 */ 337 init_bootstrap_console(); 338 339 /* OUTPUT NOW ALLOWED */ 340 341 /* delayed from above */ 342 if (bootinfo_msg) 343 printf("WARNING: %s (0x%lx, 0x%lx, 0x%lx)\n", 344 bootinfo_msg, bim, bip, biv); 345 346 /* Initialize the trap vectors on the primary processor. */ 347 trap_init(); 348 349 /* 350 * Find out what hardware we're on, and do basic initialization. 351 */ 352 cputype = hwrpb->rpb_type; 353 if (cputype < 0) { 354 /* 355 * At least some white-box systems have SRM which 356 * reports a systype that's the negative of their 357 * blue-box counterpart. 358 */ 359 cputype = -cputype; 360 } 361 c = platform_lookup(cputype); 362 if (c == NULL) { 363 platform_not_supported(); 364 /* NOTREACHED */ 365 } 366 (*c->init)(); 367 strcpy(cpu_model, platform.model); 368 369 /* 370 * Initalize the real console, so that the bootstrap console is 371 * no longer necessary. 372 */ 373 (*platform.cons_init)(); 374 375 #ifdef DIAGNOSTIC 376 /* Paranoid sanity checking */ 377 378 /* We should always be running on the primary. */ 379 assert(hwrpb->rpb_primary_cpu_id == cpu_id); 380 381 /* 382 * On single-CPU systypes, the primary should always be CPU 0, 383 * except on Alpha 8200 systems where the CPU id is related 384 * to the VID, which is related to the Turbo Laser node id. 385 */ 386 if (cputype != ST_DEC_21000) 387 assert(hwrpb->rpb_primary_cpu_id == 0); 388 #endif 389 390 /* NO MORE FIRMWARE ACCESS ALLOWED */ 391 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 392 /* 393 * XXX (unless _PMAP_MAY_USE_PROM_CONSOLE is defined and 394 * XXX pmap_uses_prom_console() evaluates to non-zero.) 395 */ 396 #endif 397 398 /* 399 * find out this system's page size 400 */ 401 PAGE_SIZE = hwrpb->rpb_page_size; 402 if (PAGE_SIZE != 8192) 403 panic("page size %d != 8192?!", PAGE_SIZE); 404 405 /* 406 * Initialize PAGE_SIZE-dependent variables. 407 */ 408 uvm_setpagesize(); 409 410 /* 411 * Find the beginning and end of the kernel (and leave a 412 * bit of space before the beginning for the bootstrap 413 * stack). 414 */ 415 kernstart = trunc_page((vaddr_t)kernel_text) - 2 * PAGE_SIZE; 416 #ifdef DDB 417 ksym_start = (void *)bootinfo.ssym; 418 ksym_end = (void *)bootinfo.esym; 419 kernend = (vaddr_t)round_page((vaddr_t)ksym_end); 420 #else 421 kernend = (vaddr_t)round_page((vaddr_t)_end); 422 #endif 423 424 kernstartpfn = atop(ALPHA_K0SEG_TO_PHYS(kernstart)); 425 kernendpfn = atop(ALPHA_K0SEG_TO_PHYS(kernend)); 426 427 /* 428 * Find out how much memory is available, by looking at 429 * the memory cluster descriptors. This also tries to do 430 * its best to detect things things that have never been seen 431 * before... 432 */ 433 mddtp = (struct mddt *)(((caddr_t)hwrpb) + hwrpb->rpb_memdat_off); 434 435 /* MDDT SANITY CHECKING */ 436 mddtweird = 0; 437 if (mddtp->mddt_cluster_cnt < 2) { 438 mddtweird = 1; 439 printf("WARNING: weird number of mem clusters: %lu\n", 440 mddtp->mddt_cluster_cnt); 441 } 442 443 #if 0 444 printf("Memory cluster count: %d\n", mddtp->mddt_cluster_cnt); 445 #endif 446 447 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 448 memc = &mddtp->mddt_clusters[i]; 449 #if 0 450 printf("MEMC %d: pfn 0x%lx cnt 0x%lx usage 0x%lx\n", i, 451 memc->mddt_pfn, memc->mddt_pg_cnt, memc->mddt_usage); 452 #endif 453 totalphysmem += memc->mddt_pg_cnt; 454 if (mem_cluster_cnt < VM_PHYSSEG_MAX) { /* XXX */ 455 mem_clusters[mem_cluster_cnt].start = 456 ptoa(memc->mddt_pfn); 457 mem_clusters[mem_cluster_cnt].size = 458 ptoa(memc->mddt_pg_cnt); 459 if (memc->mddt_usage & MDDT_mbz || 460 memc->mddt_usage & MDDT_NONVOLATILE || /* XXX */ 461 memc->mddt_usage & MDDT_PALCODE) 462 mem_clusters[mem_cluster_cnt].size |= 463 PROT_READ; 464 else 465 mem_clusters[mem_cluster_cnt].size |= 466 PROT_READ | PROT_WRITE | PROT_EXEC; 467 mem_cluster_cnt++; 468 } 469 470 if (memc->mddt_usage & MDDT_mbz) { 471 mddtweird = 1; 472 printf("WARNING: mem cluster %d has weird " 473 "usage 0x%lx\n", i, memc->mddt_usage); 474 unknownmem += memc->mddt_pg_cnt; 475 continue; 476 } 477 if (memc->mddt_usage & MDDT_NONVOLATILE) { 478 /* XXX should handle these... */ 479 printf("WARNING: skipping non-volatile mem " 480 "cluster %d\n", i); 481 unusedmem += memc->mddt_pg_cnt; 482 continue; 483 } 484 if (memc->mddt_usage & MDDT_PALCODE) { 485 resvmem += memc->mddt_pg_cnt; 486 continue; 487 } 488 489 /* 490 * We have a memory cluster available for system 491 * software use. We must determine if this cluster 492 * holds the kernel. 493 */ 494 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 495 /* 496 * XXX If the kernel uses the PROM console, we only use the 497 * XXX memory after the kernel in the first system segment, 498 * XXX to avoid clobbering prom mapping, data, etc. 499 */ 500 if (!pmap_uses_prom_console() || physmem == 0) { 501 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 502 physmem += memc->mddt_pg_cnt; 503 pfn0 = memc->mddt_pfn; 504 pfn1 = memc->mddt_pfn + memc->mddt_pg_cnt; 505 if (pfn0 <= kernstartpfn && kernendpfn <= pfn1) { 506 /* 507 * Must compute the location of the kernel 508 * within the segment. 509 */ 510 #if 0 511 printf("Cluster %d contains kernel\n", i); 512 #endif 513 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 514 if (!pmap_uses_prom_console()) { 515 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 516 if (pfn0 < kernstartpfn) { 517 /* 518 * There is a chunk before the kernel. 519 */ 520 #if 0 521 printf("Loading chunk before kernel: " 522 "0x%lx / 0x%lx\n", pfn0, kernstartpfn); 523 #endif 524 uvm_page_physload(pfn0, kernstartpfn, 525 pfn0, kernstartpfn, VM_FREELIST_DEFAULT); 526 } 527 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 528 } 529 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 530 if (kernendpfn < pfn1) { 531 /* 532 * There is a chunk after the kernel. 533 */ 534 #if 0 535 printf("Loading chunk after kernel: " 536 "0x%lx / 0x%lx\n", kernendpfn, pfn1); 537 #endif 538 uvm_page_physload(kernendpfn, pfn1, 539 kernendpfn, pfn1, VM_FREELIST_DEFAULT); 540 } 541 } else { 542 /* 543 * Just load this cluster as one chunk. 544 */ 545 #if 0 546 printf("Loading cluster %d: 0x%lx / 0x%lx\n", i, 547 pfn0, pfn1); 548 #endif 549 uvm_page_physload(pfn0, pfn1, pfn0, pfn1, 550 VM_FREELIST_DEFAULT); 551 } 552 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 553 } 554 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 555 } 556 557 /* 558 * Dump out the MDDT if it looks odd... 559 */ 560 if (mddtweird) { 561 printf("\n"); 562 printf("complete memory cluster information:\n"); 563 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 564 printf("mddt %d:\n", i); 565 printf("\tpfn %lx\n", 566 mddtp->mddt_clusters[i].mddt_pfn); 567 printf("\tcnt %lx\n", 568 mddtp->mddt_clusters[i].mddt_pg_cnt); 569 printf("\ttest %lx\n", 570 mddtp->mddt_clusters[i].mddt_pg_test); 571 printf("\tbva %lx\n", 572 mddtp->mddt_clusters[i].mddt_v_bitaddr); 573 printf("\tbpa %lx\n", 574 mddtp->mddt_clusters[i].mddt_p_bitaddr); 575 printf("\tbcksum %lx\n", 576 mddtp->mddt_clusters[i].mddt_bit_cksum); 577 printf("\tusage %lx\n", 578 mddtp->mddt_clusters[i].mddt_usage); 579 } 580 printf("\n"); 581 } 582 583 if (totalphysmem == 0) 584 panic("can't happen: system seems to have no memory!"); 585 maxmem = physmem; 586 #if 0 587 printf("totalphysmem = %d\n", totalphysmem); 588 printf("physmem = %d\n", physmem); 589 printf("resvmem = %d\n", resvmem); 590 printf("unusedmem = %d\n", unusedmem); 591 printf("unknownmem = %d\n", unknownmem); 592 #endif 593 594 /* 595 * Initialize error message buffer (at end of core). 596 */ 597 { 598 vsize_t sz = (vsize_t)round_page(MSGBUFSIZE); 599 vsize_t reqsz = sz; 600 601 vps = &vm_physmem[vm_nphysseg - 1]; 602 603 /* shrink so that it'll fit in the last segment */ 604 if ((vps->avail_end - vps->avail_start) < atop(sz)) 605 sz = ptoa(vps->avail_end - vps->avail_start); 606 607 vps->end -= atop(sz); 608 vps->avail_end -= atop(sz); 609 msgbufaddr = (caddr_t) ALPHA_PHYS_TO_K0SEG(ptoa(vps->end)); 610 initmsgbuf(msgbufaddr, sz); 611 612 /* Remove the last segment if it now has no pages. */ 613 if (vps->start == vps->end) 614 vm_nphysseg--; 615 616 /* warn if the message buffer had to be shrunk */ 617 if (sz != reqsz) 618 printf("WARNING: %ld bytes not available for msgbuf " 619 "in last cluster (%ld used)\n", reqsz, sz); 620 621 } 622 623 /* 624 * Init mapping for u page(s) for proc 0 625 */ 626 proc0.p_addr = proc0paddr = 627 (struct user *)pmap_steal_memory(UPAGES * PAGE_SIZE, NULL, NULL); 628 629 /* 630 * Allocate space for system data structures. These data structures 631 * are allocated here instead of cpu_startup() because physical 632 * memory is directly addressable. We don't have to map these into 633 * virtual address space. 634 */ 635 size = (vsize_t)allocsys(NULL, NULL); 636 v = (caddr_t)pmap_steal_memory(size, NULL, NULL); 637 if ((allocsys(v, NULL) - v) != size) 638 panic("alpha_init: table size inconsistency"); 639 640 /* 641 * Initialize the virtual memory system, and set the 642 * page table base register in proc 0's PCB. 643 */ 644 pmap_bootstrap(ALPHA_PHYS_TO_K0SEG(ptb << PGSHIFT), 645 hwrpb->rpb_max_asn, hwrpb->rpb_pcs_cnt); 646 647 /* 648 * Initialize the rest of proc 0's PCB, and cache its physical 649 * address. 650 */ 651 proc0.p_md.md_pcbpaddr = 652 (struct pcb *)ALPHA_K0SEG_TO_PHYS((vaddr_t)&proc0paddr->u_pcb); 653 654 /* 655 * Set the kernel sp, reserving space for an (empty) trapframe, 656 * and make proc0's trapframe pointer point to it for sanity. 657 */ 658 proc0paddr->u_pcb.pcb_hw.apcb_ksp = 659 (u_int64_t)proc0paddr + USPACE - sizeof(struct trapframe); 660 proc0.p_md.md_tf = 661 (struct trapframe *)proc0paddr->u_pcb.pcb_hw.apcb_ksp; 662 663 /* 664 * Initialize the primary CPU's idle PCB to proc0's. In a 665 * MULTIPROCESSOR configuration, each CPU will later get 666 * its own idle PCB when autoconfiguration runs. 667 */ 668 ci->ci_idle_pcb = &proc0paddr->u_pcb; 669 ci->ci_idle_pcb_paddr = (u_long)proc0.p_md.md_pcbpaddr; 670 671 /* Indicate that proc0 has a CPU. */ 672 proc0.p_cpu = ci; 673 674 /* 675 * Look at arguments passed to us and compute boothowto. 676 */ 677 678 boothowto = RB_SINGLE; 679 #ifdef KADB 680 boothowto |= RB_KDB; 681 #endif 682 for (p = bootinfo.boot_flags; p && *p != '\0'; p++) { 683 /* 684 * Note that we'd really like to differentiate case here, 685 * but the Alpha AXP Architecture Reference Manual 686 * says that we shouldn't. 687 */ 688 switch (*p) { 689 case 'a': /* autoboot */ 690 case 'A': 691 boothowto &= ~RB_SINGLE; 692 break; 693 694 #ifdef DEBUG 695 case 'c': /* crash dump immediately after autoconfig */ 696 case 'C': 697 boothowto |= RB_DUMP; 698 break; 699 #endif 700 701 #if defined(KGDB) || defined(DDB) 702 case 'd': /* break into the kernel debugger ASAP */ 703 case 'D': 704 boothowto |= RB_KDB; 705 break; 706 #endif 707 708 case 'h': /* always halt, never reboot */ 709 case 'H': 710 boothowto |= RB_HALT; 711 break; 712 713 #if 0 714 case 'm': /* mini root present in memory */ 715 case 'M': 716 boothowto |= RB_MINIROOT; 717 break; 718 #endif 719 720 case 'n': /* askname */ 721 case 'N': 722 boothowto |= RB_ASKNAME; 723 break; 724 725 case 's': /* single-user (default, supported for sanity) */ 726 case 'S': 727 boothowto |= RB_SINGLE; 728 break; 729 730 case 'q': /* quiet boot */ 731 case 'Q': 732 boothowto |= AB_QUIET; 733 break; 734 735 case 'v': /* verbose boot */ 736 case 'V': 737 boothowto |= AB_VERBOSE; 738 break; 739 740 case '-': 741 /* 742 * Just ignore this. It's not required, but it's 743 * common for it to be passed regardless. 744 */ 745 break; 746 747 default: 748 printf("Unrecognized boot flag '%c'.\n", *p); 749 break; 750 } 751 } 752 753 754 /* 755 * Figure out the number of cpus in the box, from RPB fields. 756 * Really. We mean it. 757 */ 758 for (i = 0; i < hwrpb->rpb_pcs_cnt; i++) { 759 struct pcs *pcsp; 760 761 pcsp = LOCATE_PCS(hwrpb, i); 762 if ((pcsp->pcs_flags & PCS_PP) != 0) 763 ncpus++; 764 } 765 766 /* 767 * Initialize debuggers, and break into them if appropriate. 768 */ 769 #ifdef DDB 770 db_machine_init(); 771 ddb_init((int)((u_int64_t)ksym_end - (u_int64_t)ksym_start), 772 ksym_start, ksym_end); 773 if (boothowto & RB_KDB) 774 Debugger(); 775 #endif 776 #ifdef KGDB 777 if (boothowto & RB_KDB) 778 kgdb_connect(0); 779 #endif 780 /* 781 * Figure out our clock frequency, from RPB fields. 782 */ 783 hz = hwrpb->rpb_intr_freq >> 12; 784 if (!(60 <= hz && hz <= 10240)) { 785 hz = 1024; 786 #ifdef DIAGNOSTIC 787 printf("WARNING: unbelievable rpb_intr_freq: %ld (%d hz)\n", 788 hwrpb->rpb_intr_freq, hz); 789 #endif 790 } 791 } 792 793 void 794 consinit() 795 { 796 797 /* 798 * Everything related to console initialization is done 799 * in alpha_init(). 800 */ 801 #if defined(DIAGNOSTIC) && defined(_PMAP_MAY_USE_PROM_CONSOLE) 802 printf("consinit: %susing prom console\n", 803 pmap_uses_prom_console() ? "" : "not "); 804 #endif 805 } 806 807 #include "pckbc.h" 808 #include "pckbd.h" 809 #if (NPCKBC > 0) && (NPCKBD == 0) 810 811 #include <dev/ic/pckbcvar.h> 812 813 /* 814 * This is called by the pbkbc driver if no pckbd is configured. 815 * On the i386, it is used to glue in the old, deprecated console 816 * code. On the Alpha, it does nothing. 817 */ 818 int 819 pckbc_machdep_cnattach(kbctag, kbcslot) 820 pckbc_tag_t kbctag; 821 pckbc_slot_t kbcslot; 822 { 823 824 return (ENXIO); 825 } 826 #endif /* NPCKBC > 0 && NPCKBD == 0 */ 827 828 void 829 cpu_startup() 830 { 831 register unsigned i; 832 int base, residual; 833 vaddr_t minaddr, maxaddr; 834 vsize_t size; 835 char pbuf[9]; 836 #if defined(DEBUG) 837 extern int pmapdebug; 838 int opmapdebug = pmapdebug; 839 840 pmapdebug = 0; 841 #endif 842 843 /* 844 * Good {morning,afternoon,evening,night}. 845 */ 846 printf(version); 847 identifycpu(); 848 format_bytes(pbuf, sizeof(pbuf), ptoa(totalphysmem)); 849 printf("total memory = %s\n", pbuf); 850 format_bytes(pbuf, sizeof(pbuf), ptoa(resvmem)); 851 printf("(%s reserved for PROM, ", pbuf); 852 format_bytes(pbuf, sizeof(pbuf), ptoa(physmem)); 853 printf("%s used by NetBSD)\n", pbuf); 854 if (unusedmem) { 855 format_bytes(pbuf, sizeof(pbuf), ptoa(unusedmem)); 856 printf("WARNING: unused memory = %s\n", pbuf); 857 } 858 if (unknownmem) { 859 format_bytes(pbuf, sizeof(pbuf), ptoa(unknownmem)); 860 printf("WARNING: %s of memory with unknown purpose\n", pbuf); 861 } 862 863 /* 864 * Allocate virtual address space for file I/O buffers. 865 * Note they are different than the array of headers, 'buf', 866 * and usually occupy more virtual memory than physical. 867 */ 868 size = MAXBSIZE * nbuf; 869 if (uvm_map(kernel_map, (vaddr_t *) &buffers, round_page(size), 870 NULL, UVM_UNKNOWN_OFFSET, 0, 871 UVM_MAPFLAG(UVM_PROT_NONE, UVM_PROT_NONE, UVM_INH_NONE, 872 UVM_ADV_NORMAL, 0)) != KERN_SUCCESS) 873 panic("startup: cannot allocate VM for buffers"); 874 base = bufpages / nbuf; 875 residual = bufpages % nbuf; 876 for (i = 0; i < nbuf; i++) { 877 vsize_t curbufsize; 878 vaddr_t curbuf; 879 struct vm_page *pg; 880 881 /* 882 * Each buffer has MAXBSIZE bytes of VM space allocated. Of 883 * that MAXBSIZE space, we allocate and map (base+1) pages 884 * for the first "residual" buffers, and then we allocate 885 * "base" pages for the rest. 886 */ 887 curbuf = (vaddr_t) buffers + (i * MAXBSIZE); 888 curbufsize = NBPG * ((i < residual) ? (base+1) : base); 889 890 while (curbufsize) { 891 pg = uvm_pagealloc(NULL, 0, NULL, 0); 892 if (pg == NULL) 893 panic("cpu_startup: not enough memory for " 894 "buffer cache"); 895 pmap_kenter_pa(curbuf, VM_PAGE_TO_PHYS(pg), 896 VM_PROT_READ|VM_PROT_WRITE); 897 curbuf += PAGE_SIZE; 898 curbufsize -= PAGE_SIZE; 899 } 900 } 901 /* 902 * Allocate a submap for exec arguments. This map effectively 903 * limits the number of processes exec'ing at any time. 904 */ 905 exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 906 16 * NCARGS, VM_MAP_PAGEABLE, FALSE, NULL); 907 908 /* 909 * Allocate a submap for physio 910 */ 911 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 912 VM_PHYS_SIZE, 0, FALSE, NULL); 913 914 /* 915 * No need to allocate an mbuf cluster submap. Mbuf clusters 916 * are allocated via the pool allocator, and we use K0SEG to 917 * map those pages. 918 */ 919 920 #if defined(DEBUG) 921 pmapdebug = opmapdebug; 922 #endif 923 format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 924 printf("avail memory = %s\n", pbuf); 925 #if 0 926 { 927 extern u_long pmap_pages_stolen; 928 929 format_bytes(pbuf, sizeof(pbuf), pmap_pages_stolen * PAGE_SIZE); 930 printf("stolen memory for VM structures = %s\n", pbuf); 931 } 932 #endif 933 format_bytes(pbuf, sizeof(pbuf), bufpages * NBPG); 934 printf("using %ld buffers containing %s of memory\n", (long)nbuf, pbuf); 935 936 /* 937 * Set up buffers, so they can be used to read disk labels. 938 */ 939 bufinit(); 940 941 /* 942 * Set up the HWPCB so that it's safe to configure secondary 943 * CPUs. 944 */ 945 hwrpb_primary_init(); 946 } 947 948 /* 949 * Retrieve the platform name from the DSR. 950 */ 951 const char * 952 alpha_dsr_sysname() 953 { 954 struct dsrdb *dsr; 955 const char *sysname; 956 957 /* 958 * DSR does not exist on early HWRPB versions. 959 */ 960 if (hwrpb->rpb_version < HWRPB_DSRDB_MINVERS) 961 return (NULL); 962 963 dsr = (struct dsrdb *)(((caddr_t)hwrpb) + hwrpb->rpb_dsrdb_off); 964 sysname = (const char *)((caddr_t)dsr + (dsr->dsr_sysname_off + 965 sizeof(u_int64_t))); 966 return (sysname); 967 } 968 969 /* 970 * Lookup the system specified system variation in the provided table, 971 * returning the model string on match. 972 */ 973 const char * 974 alpha_variation_name(variation, avtp) 975 u_int64_t variation; 976 const struct alpha_variation_table *avtp; 977 { 978 int i; 979 980 for (i = 0; avtp[i].avt_model != NULL; i++) 981 if (avtp[i].avt_variation == variation) 982 return (avtp[i].avt_model); 983 return (NULL); 984 } 985 986 /* 987 * Generate a default platform name based for unknown system variations. 988 */ 989 const char * 990 alpha_unknown_sysname() 991 { 992 static char s[128]; /* safe size */ 993 994 sprintf(s, "%s family, unknown model variation 0x%lx", 995 platform.family, hwrpb->rpb_variation & SV_ST_MASK); 996 return ((const char *)s); 997 } 998 999 void 1000 identifycpu() 1001 { 1002 char *s; 1003 int i; 1004 1005 /* 1006 * print out CPU identification information. 1007 */ 1008 printf("%s", cpu_model); 1009 for(s = cpu_model; *s; ++s) 1010 if(strncasecmp(s, "MHz", 3) == 0) 1011 goto skipMHz; 1012 printf(", %ldMHz", hwrpb->rpb_cc_freq / 1000000); 1013 skipMHz: 1014 printf(", s/n "); 1015 for (i = 0; i < 10; i++) 1016 printf("%c", hwrpb->rpb_ssn[i]); 1017 printf("\n"); 1018 printf("%ld byte page size, %d processor%s.\n", 1019 hwrpb->rpb_page_size, ncpus, ncpus == 1 ? "" : "s"); 1020 #if 0 1021 /* this isn't defined for any systems that we run on? */ 1022 printf("serial number 0x%lx 0x%lx\n", 1023 ((long *)hwrpb->rpb_ssn)[0], ((long *)hwrpb->rpb_ssn)[1]); 1024 1025 /* and these aren't particularly useful! */ 1026 printf("variation: 0x%lx, revision 0x%lx\n", 1027 hwrpb->rpb_variation, *(long *)hwrpb->rpb_revision); 1028 #endif 1029 } 1030 1031 int waittime = -1; 1032 struct pcb dumppcb; 1033 1034 void 1035 cpu_reboot(howto, bootstr) 1036 int howto; 1037 char *bootstr; 1038 { 1039 #if defined(MULTIPROCESSOR) 1040 u_long cpu_id = cpu_number(); 1041 u_long wait_mask = (1UL << cpu_id) | 1042 (1UL << hwrpb->rpb_primary_cpu_id); 1043 int i; 1044 #endif 1045 1046 /* If "always halt" was specified as a boot flag, obey. */ 1047 if ((boothowto & RB_HALT) != 0) 1048 howto |= RB_HALT; 1049 1050 boothowto = howto; 1051 1052 /* If system is cold, just halt. */ 1053 if (cold) { 1054 boothowto |= RB_HALT; 1055 goto haltsys; 1056 } 1057 1058 if ((boothowto & RB_NOSYNC) == 0 && waittime < 0) { 1059 waittime = 0; 1060 vfs_shutdown(); 1061 /* 1062 * If we've been adjusting the clock, the todr 1063 * will be out of synch; adjust it now. 1064 */ 1065 resettodr(); 1066 } 1067 1068 /* Disable interrupts. */ 1069 splhigh(); 1070 1071 #if defined(MULTIPROCESSOR) 1072 /* 1073 * Halt all other CPUs. If we're not the primary, the 1074 * primary will spin, waiting for us to halt. 1075 */ 1076 alpha_broadcast_ipi(ALPHA_IPI_HALT); 1077 1078 for (i = 0; i < 10000; i++) { 1079 alpha_mb(); 1080 if (cpus_running == wait_mask) 1081 break; 1082 delay(1000); 1083 } 1084 alpha_mb(); 1085 if (cpus_running != wait_mask) 1086 printf("WARNING: Unable to halt secondary CPUs (0x%lx)\n", 1087 cpus_running); 1088 #endif /* MULTIPROCESSOR */ 1089 1090 /* If rebooting and a dump is requested do it. */ 1091 #if 0 1092 if ((boothowto & (RB_DUMP | RB_HALT)) == RB_DUMP) 1093 #else 1094 if (boothowto & RB_DUMP) 1095 #endif 1096 dumpsys(); 1097 1098 haltsys: 1099 1100 /* run any shutdown hooks */ 1101 doshutdownhooks(); 1102 1103 #ifdef BOOTKEY 1104 printf("hit any key to %s...\n", howto & RB_HALT ? "halt" : "reboot"); 1105 cnpollc(1); /* for proper keyboard command handling */ 1106 cngetc(); 1107 cnpollc(0); 1108 printf("\n"); 1109 #endif 1110 1111 /* Finally, powerdown/halt/reboot the system. */ 1112 if ((boothowto & RB_POWERDOWN) == RB_POWERDOWN && 1113 platform.powerdown != NULL) { 1114 (*platform.powerdown)(); 1115 printf("WARNING: powerdown failed!\n"); 1116 } 1117 printf("%s\n\n", (boothowto & RB_HALT) ? "halted." : "rebooting..."); 1118 #if defined(MULTIPROCESSOR) 1119 if (cpu_id != hwrpb->rpb_primary_cpu_id) 1120 cpu_halt(); 1121 else 1122 #endif 1123 prom_halt(boothowto & RB_HALT); 1124 /*NOTREACHED*/ 1125 } 1126 1127 /* 1128 * These variables are needed by /sbin/savecore 1129 */ 1130 u_long dumpmag = 0x8fca0101; /* magic number */ 1131 int dumpsize = 0; /* pages */ 1132 long dumplo = 0; /* blocks */ 1133 1134 /* 1135 * cpu_dumpsize: calculate size of machine-dependent kernel core dump headers. 1136 */ 1137 int 1138 cpu_dumpsize() 1139 { 1140 int size; 1141 1142 size = ALIGN(sizeof(kcore_seg_t)) + ALIGN(sizeof(cpu_kcore_hdr_t)) + 1143 ALIGN(mem_cluster_cnt * sizeof(phys_ram_seg_t)); 1144 if (roundup(size, dbtob(1)) != dbtob(1)) 1145 return -1; 1146 1147 return (1); 1148 } 1149 1150 /* 1151 * cpu_dump_mempagecnt: calculate size of RAM (in pages) to be dumped. 1152 */ 1153 u_long 1154 cpu_dump_mempagecnt() 1155 { 1156 u_long i, n; 1157 1158 n = 0; 1159 for (i = 0; i < mem_cluster_cnt; i++) 1160 n += atop(mem_clusters[i].size); 1161 return (n); 1162 } 1163 1164 /* 1165 * cpu_dump: dump machine-dependent kernel core dump headers. 1166 */ 1167 int 1168 cpu_dump() 1169 { 1170 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1171 char buf[dbtob(1)]; 1172 kcore_seg_t *segp; 1173 cpu_kcore_hdr_t *cpuhdrp; 1174 phys_ram_seg_t *memsegp; 1175 int i; 1176 1177 dump = bdevsw[major(dumpdev)].d_dump; 1178 1179 bzero(buf, sizeof buf); 1180 segp = (kcore_seg_t *)buf; 1181 cpuhdrp = (cpu_kcore_hdr_t *)&buf[ALIGN(sizeof(*segp))]; 1182 memsegp = (phys_ram_seg_t *)&buf[ ALIGN(sizeof(*segp)) + 1183 ALIGN(sizeof(*cpuhdrp))]; 1184 1185 /* 1186 * Generate a segment header. 1187 */ 1188 CORE_SETMAGIC(*segp, KCORE_MAGIC, MID_MACHINE, CORE_CPU); 1189 segp->c_size = dbtob(1) - ALIGN(sizeof(*segp)); 1190 1191 /* 1192 * Add the machine-dependent header info. 1193 */ 1194 cpuhdrp->lev1map_pa = ALPHA_K0SEG_TO_PHYS((vaddr_t)kernel_lev1map); 1195 cpuhdrp->page_size = PAGE_SIZE; 1196 cpuhdrp->nmemsegs = mem_cluster_cnt; 1197 1198 /* 1199 * Fill in the memory segment descriptors. 1200 */ 1201 for (i = 0; i < mem_cluster_cnt; i++) { 1202 memsegp[i].start = mem_clusters[i].start; 1203 memsegp[i].size = mem_clusters[i].size & ~PAGE_MASK; 1204 } 1205 1206 return (dump(dumpdev, dumplo, (caddr_t)buf, dbtob(1))); 1207 } 1208 1209 /* 1210 * This is called by main to set dumplo and dumpsize. 1211 * Dumps always skip the first NBPG of disk space 1212 * in case there might be a disk label stored there. 1213 * If there is extra space, put dump at the end to 1214 * reduce the chance that swapping trashes it. 1215 */ 1216 void 1217 cpu_dumpconf() 1218 { 1219 int nblks, dumpblks; /* size of dump area */ 1220 int maj; 1221 1222 if (dumpdev == NODEV) 1223 goto bad; 1224 maj = major(dumpdev); 1225 if (maj < 0 || maj >= nblkdev) 1226 panic("dumpconf: bad dumpdev=0x%x", dumpdev); 1227 if (bdevsw[maj].d_psize == NULL) 1228 goto bad; 1229 nblks = (*bdevsw[maj].d_psize)(dumpdev); 1230 if (nblks <= ctod(1)) 1231 goto bad; 1232 1233 dumpblks = cpu_dumpsize(); 1234 if (dumpblks < 0) 1235 goto bad; 1236 dumpblks += ctod(cpu_dump_mempagecnt()); 1237 1238 /* If dump won't fit (incl. room for possible label), punt. */ 1239 if (dumpblks > (nblks - ctod(1))) 1240 goto bad; 1241 1242 /* Put dump at end of partition */ 1243 dumplo = nblks - dumpblks; 1244 1245 /* dumpsize is in page units, and doesn't include headers. */ 1246 dumpsize = cpu_dump_mempagecnt(); 1247 return; 1248 1249 bad: 1250 dumpsize = 0; 1251 return; 1252 } 1253 1254 /* 1255 * Dump the kernel's image to the swap partition. 1256 */ 1257 #define BYTES_PER_DUMP NBPG 1258 1259 void 1260 dumpsys() 1261 { 1262 u_long totalbytesleft, bytes, i, n, memcl; 1263 u_long maddr; 1264 int psize; 1265 daddr_t blkno; 1266 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1267 int error; 1268 1269 /* Save registers. */ 1270 savectx(&dumppcb); 1271 1272 if (dumpdev == NODEV) 1273 return; 1274 1275 /* 1276 * For dumps during autoconfiguration, 1277 * if dump device has already configured... 1278 */ 1279 if (dumpsize == 0) 1280 cpu_dumpconf(); 1281 if (dumplo <= 0) { 1282 printf("\ndump to dev %u,%u not possible\n", major(dumpdev), 1283 minor(dumpdev)); 1284 return; 1285 } 1286 printf("\ndumping to dev %u,%u offset %ld\n", major(dumpdev), 1287 minor(dumpdev), dumplo); 1288 1289 psize = (*bdevsw[major(dumpdev)].d_psize)(dumpdev); 1290 printf("dump "); 1291 if (psize == -1) { 1292 printf("area unavailable\n"); 1293 return; 1294 } 1295 1296 /* XXX should purge all outstanding keystrokes. */ 1297 1298 if ((error = cpu_dump()) != 0) 1299 goto err; 1300 1301 totalbytesleft = ptoa(cpu_dump_mempagecnt()); 1302 blkno = dumplo + cpu_dumpsize(); 1303 dump = bdevsw[major(dumpdev)].d_dump; 1304 error = 0; 1305 1306 for (memcl = 0; memcl < mem_cluster_cnt; memcl++) { 1307 maddr = mem_clusters[memcl].start; 1308 bytes = mem_clusters[memcl].size & ~PAGE_MASK; 1309 1310 for (i = 0; i < bytes; i += n, totalbytesleft -= n) { 1311 1312 /* Print out how many MBs we to go. */ 1313 if ((totalbytesleft % (1024*1024)) == 0) 1314 printf("%ld ", totalbytesleft / (1024 * 1024)); 1315 1316 /* Limit size for next transfer. */ 1317 n = bytes - i; 1318 if (n > BYTES_PER_DUMP) 1319 n = BYTES_PER_DUMP; 1320 1321 error = (*dump)(dumpdev, blkno, 1322 (caddr_t)ALPHA_PHYS_TO_K0SEG(maddr), n); 1323 if (error) 1324 goto err; 1325 maddr += n; 1326 blkno += btodb(n); /* XXX? */ 1327 1328 /* XXX should look for keystrokes, to cancel. */ 1329 } 1330 } 1331 1332 err: 1333 switch (error) { 1334 1335 case ENXIO: 1336 printf("device bad\n"); 1337 break; 1338 1339 case EFAULT: 1340 printf("device not ready\n"); 1341 break; 1342 1343 case EINVAL: 1344 printf("area improper\n"); 1345 break; 1346 1347 case EIO: 1348 printf("i/o error\n"); 1349 break; 1350 1351 case EINTR: 1352 printf("aborted from console\n"); 1353 break; 1354 1355 case 0: 1356 printf("succeeded\n"); 1357 break; 1358 1359 default: 1360 printf("error %d\n", error); 1361 break; 1362 } 1363 printf("\n\n"); 1364 delay(1000); 1365 } 1366 1367 void 1368 frametoreg(framep, regp) 1369 struct trapframe *framep; 1370 struct reg *regp; 1371 { 1372 1373 regp->r_regs[R_V0] = framep->tf_regs[FRAME_V0]; 1374 regp->r_regs[R_T0] = framep->tf_regs[FRAME_T0]; 1375 regp->r_regs[R_T1] = framep->tf_regs[FRAME_T1]; 1376 regp->r_regs[R_T2] = framep->tf_regs[FRAME_T2]; 1377 regp->r_regs[R_T3] = framep->tf_regs[FRAME_T3]; 1378 regp->r_regs[R_T4] = framep->tf_regs[FRAME_T4]; 1379 regp->r_regs[R_T5] = framep->tf_regs[FRAME_T5]; 1380 regp->r_regs[R_T6] = framep->tf_regs[FRAME_T6]; 1381 regp->r_regs[R_T7] = framep->tf_regs[FRAME_T7]; 1382 regp->r_regs[R_S0] = framep->tf_regs[FRAME_S0]; 1383 regp->r_regs[R_S1] = framep->tf_regs[FRAME_S1]; 1384 regp->r_regs[R_S2] = framep->tf_regs[FRAME_S2]; 1385 regp->r_regs[R_S3] = framep->tf_regs[FRAME_S3]; 1386 regp->r_regs[R_S4] = framep->tf_regs[FRAME_S4]; 1387 regp->r_regs[R_S5] = framep->tf_regs[FRAME_S5]; 1388 regp->r_regs[R_S6] = framep->tf_regs[FRAME_S6]; 1389 regp->r_regs[R_A0] = framep->tf_regs[FRAME_A0]; 1390 regp->r_regs[R_A1] = framep->tf_regs[FRAME_A1]; 1391 regp->r_regs[R_A2] = framep->tf_regs[FRAME_A2]; 1392 regp->r_regs[R_A3] = framep->tf_regs[FRAME_A3]; 1393 regp->r_regs[R_A4] = framep->tf_regs[FRAME_A4]; 1394 regp->r_regs[R_A5] = framep->tf_regs[FRAME_A5]; 1395 regp->r_regs[R_T8] = framep->tf_regs[FRAME_T8]; 1396 regp->r_regs[R_T9] = framep->tf_regs[FRAME_T9]; 1397 regp->r_regs[R_T10] = framep->tf_regs[FRAME_T10]; 1398 regp->r_regs[R_T11] = framep->tf_regs[FRAME_T11]; 1399 regp->r_regs[R_RA] = framep->tf_regs[FRAME_RA]; 1400 regp->r_regs[R_T12] = framep->tf_regs[FRAME_T12]; 1401 regp->r_regs[R_AT] = framep->tf_regs[FRAME_AT]; 1402 regp->r_regs[R_GP] = framep->tf_regs[FRAME_GP]; 1403 /* regp->r_regs[R_SP] = framep->tf_regs[FRAME_SP]; XXX */ 1404 regp->r_regs[R_ZERO] = 0; 1405 } 1406 1407 void 1408 regtoframe(regp, framep) 1409 struct reg *regp; 1410 struct trapframe *framep; 1411 { 1412 1413 framep->tf_regs[FRAME_V0] = regp->r_regs[R_V0]; 1414 framep->tf_regs[FRAME_T0] = regp->r_regs[R_T0]; 1415 framep->tf_regs[FRAME_T1] = regp->r_regs[R_T1]; 1416 framep->tf_regs[FRAME_T2] = regp->r_regs[R_T2]; 1417 framep->tf_regs[FRAME_T3] = regp->r_regs[R_T3]; 1418 framep->tf_regs[FRAME_T4] = regp->r_regs[R_T4]; 1419 framep->tf_regs[FRAME_T5] = regp->r_regs[R_T5]; 1420 framep->tf_regs[FRAME_T6] = regp->r_regs[R_T6]; 1421 framep->tf_regs[FRAME_T7] = regp->r_regs[R_T7]; 1422 framep->tf_regs[FRAME_S0] = regp->r_regs[R_S0]; 1423 framep->tf_regs[FRAME_S1] = regp->r_regs[R_S1]; 1424 framep->tf_regs[FRAME_S2] = regp->r_regs[R_S2]; 1425 framep->tf_regs[FRAME_S3] = regp->r_regs[R_S3]; 1426 framep->tf_regs[FRAME_S4] = regp->r_regs[R_S4]; 1427 framep->tf_regs[FRAME_S5] = regp->r_regs[R_S5]; 1428 framep->tf_regs[FRAME_S6] = regp->r_regs[R_S6]; 1429 framep->tf_regs[FRAME_A0] = regp->r_regs[R_A0]; 1430 framep->tf_regs[FRAME_A1] = regp->r_regs[R_A1]; 1431 framep->tf_regs[FRAME_A2] = regp->r_regs[R_A2]; 1432 framep->tf_regs[FRAME_A3] = regp->r_regs[R_A3]; 1433 framep->tf_regs[FRAME_A4] = regp->r_regs[R_A4]; 1434 framep->tf_regs[FRAME_A5] = regp->r_regs[R_A5]; 1435 framep->tf_regs[FRAME_T8] = regp->r_regs[R_T8]; 1436 framep->tf_regs[FRAME_T9] = regp->r_regs[R_T9]; 1437 framep->tf_regs[FRAME_T10] = regp->r_regs[R_T10]; 1438 framep->tf_regs[FRAME_T11] = regp->r_regs[R_T11]; 1439 framep->tf_regs[FRAME_RA] = regp->r_regs[R_RA]; 1440 framep->tf_regs[FRAME_T12] = regp->r_regs[R_T12]; 1441 framep->tf_regs[FRAME_AT] = regp->r_regs[R_AT]; 1442 framep->tf_regs[FRAME_GP] = regp->r_regs[R_GP]; 1443 /* framep->tf_regs[FRAME_SP] = regp->r_regs[R_SP]; XXX */ 1444 /* ??? = regp->r_regs[R_ZERO]; */ 1445 } 1446 1447 void 1448 printregs(regp) 1449 struct reg *regp; 1450 { 1451 int i; 1452 1453 for (i = 0; i < 32; i++) 1454 printf("R%d:\t0x%016lx%s", i, regp->r_regs[i], 1455 i & 1 ? "\n" : "\t"); 1456 } 1457 1458 void 1459 regdump(framep) 1460 struct trapframe *framep; 1461 { 1462 struct reg reg; 1463 1464 frametoreg(framep, ®); 1465 reg.r_regs[R_SP] = alpha_pal_rdusp(); 1466 1467 printf("REGISTERS:\n"); 1468 printregs(®); 1469 } 1470 1471 1472 /* 1473 * Send an interrupt to process. 1474 */ 1475 void 1476 sendsig(catcher, sig, mask, code) 1477 sig_t catcher; 1478 int sig; 1479 sigset_t *mask; 1480 u_long code; 1481 { 1482 struct proc *p = curproc; 1483 struct sigcontext *scp, ksc; 1484 struct trapframe *frame; 1485 int onstack, fsize, rndfsize; 1486 1487 frame = p->p_md.md_tf; 1488 1489 /* Do we need to jump onto the signal stack? */ 1490 onstack = 1491 (p->p_sigctx.ps_sigstk.ss_flags & (SS_DISABLE | SS_ONSTACK)) == 0 && 1492 (SIGACTION(p, sig).sa_flags & SA_ONSTACK) != 0; 1493 1494 /* Allocate space for the signal handler context. */ 1495 fsize = sizeof(ksc); 1496 rndfsize = ((fsize + 15) / 16) * 16; 1497 1498 if (onstack) 1499 scp = (struct sigcontext *)((caddr_t)p->p_sigctx.ps_sigstk.ss_sp + 1500 p->p_sigctx.ps_sigstk.ss_size); 1501 else 1502 scp = (struct sigcontext *)(alpha_pal_rdusp()); 1503 scp = (struct sigcontext *)((caddr_t)scp - rndfsize); 1504 1505 #ifdef DEBUG 1506 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1507 printf("sendsig(%d): sig %d ssp %p usp %p\n", p->p_pid, 1508 sig, &onstack, scp); 1509 #endif 1510 1511 /* Build stack frame for signal trampoline. */ 1512 ksc.sc_pc = frame->tf_regs[FRAME_PC]; 1513 ksc.sc_ps = frame->tf_regs[FRAME_PS]; 1514 1515 /* Save register context. */ 1516 frametoreg(frame, (struct reg *)ksc.sc_regs); 1517 ksc.sc_regs[R_ZERO] = 0xACEDBADE; /* magic number */ 1518 ksc.sc_regs[R_SP] = alpha_pal_rdusp(); 1519 1520 /* save the floating-point state, if necessary, then copy it. */ 1521 if (p->p_addr->u_pcb.pcb_fpcpu != NULL) 1522 fpusave_proc(p, 1); 1523 ksc.sc_ownedfp = p->p_md.md_flags & MDP_FPUSED; 1524 bcopy(&p->p_addr->u_pcb.pcb_fp, (struct fpreg *)ksc.sc_fpregs, 1525 sizeof(struct fpreg)); 1526 ksc.sc_fp_control = 0; /* XXX ? */ 1527 bzero(ksc.sc_reserved, sizeof ksc.sc_reserved); /* XXX */ 1528 bzero(ksc.sc_xxx, sizeof ksc.sc_xxx); /* XXX */ 1529 1530 /* Save signal stack. */ 1531 ksc.sc_onstack = p->p_sigctx.ps_sigstk.ss_flags & SS_ONSTACK; 1532 1533 /* Save signal mask. */ 1534 ksc.sc_mask = *mask; 1535 1536 #ifdef COMPAT_13 1537 /* 1538 * XXX We always have to save an old style signal mask because 1539 * XXX we might be delivering a signal to a process which will 1540 * XXX escape from the signal in a non-standard way and invoke 1541 * XXX sigreturn() directly. 1542 */ 1543 { 1544 /* Note: it's a long in the stack frame. */ 1545 sigset13_t mask13; 1546 1547 native_sigset_to_sigset13(mask, &mask13); 1548 ksc.__sc_mask13 = mask13; 1549 } 1550 #endif 1551 1552 #ifdef COMPAT_OSF1 1553 /* 1554 * XXX Create an OSF/1-style sigcontext and associated goo. 1555 */ 1556 #endif 1557 1558 if (copyout(&ksc, (caddr_t)scp, fsize) != 0) { 1559 /* 1560 * Process has trashed its stack; give it an illegal 1561 * instruction to halt it in its tracks. 1562 */ 1563 #ifdef DEBUG 1564 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1565 printf("sendsig(%d): copyout failed on sig %d\n", 1566 p->p_pid, sig); 1567 #endif 1568 sigexit(p, SIGILL); 1569 /* NOTREACHED */ 1570 } 1571 #ifdef DEBUG 1572 if (sigdebug & SDB_FOLLOW) 1573 printf("sendsig(%d): sig %d scp %p code %lx\n", p->p_pid, sig, 1574 scp, code); 1575 #endif 1576 1577 /* Set up the registers to return to sigcode. */ 1578 frame->tf_regs[FRAME_PC] = (u_int64_t)p->p_sigctx.ps_sigcode; 1579 frame->tf_regs[FRAME_A0] = sig; 1580 frame->tf_regs[FRAME_A1] = code; 1581 frame->tf_regs[FRAME_A2] = (u_int64_t)scp; 1582 frame->tf_regs[FRAME_T12] = (u_int64_t)catcher; /* t12 is pv */ 1583 alpha_pal_wrusp((unsigned long)scp); 1584 1585 /* Remember that we're now on the signal stack. */ 1586 if (onstack) 1587 p->p_sigctx.ps_sigstk.ss_flags |= SS_ONSTACK; 1588 1589 #ifdef DEBUG 1590 if (sigdebug & SDB_FOLLOW) 1591 printf("sendsig(%d): pc %lx, catcher %lx\n", p->p_pid, 1592 frame->tf_regs[FRAME_PC], frame->tf_regs[FRAME_A3]); 1593 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1594 printf("sendsig(%d): sig %d returns\n", 1595 p->p_pid, sig); 1596 #endif 1597 } 1598 1599 /* 1600 * System call to cleanup state after a signal 1601 * has been taken. Reset signal mask and 1602 * stack state from context left by sendsig (above). 1603 * Return to previous pc and psl as specified by 1604 * context left by sendsig. Check carefully to 1605 * make sure that the user has not modified the 1606 * psl to gain improper privileges or to cause 1607 * a machine fault. 1608 */ 1609 /* ARGSUSED */ 1610 int 1611 sys___sigreturn14(p, v, retval) 1612 struct proc *p; 1613 void *v; 1614 register_t *retval; 1615 { 1616 struct sys___sigreturn14_args /* { 1617 syscallarg(struct sigcontext *) sigcntxp; 1618 } */ *uap = v; 1619 struct sigcontext *scp, ksc; 1620 1621 /* 1622 * The trampoline code hands us the context. 1623 * It is unsafe to keep track of it ourselves, in the event that a 1624 * program jumps out of a signal handler. 1625 */ 1626 scp = SCARG(uap, sigcntxp); 1627 #ifdef DEBUG 1628 if (sigdebug & SDB_FOLLOW) 1629 printf("sigreturn: pid %d, scp %p\n", p->p_pid, scp); 1630 #endif 1631 if (ALIGN(scp) != (u_int64_t)scp) 1632 return (EINVAL); 1633 1634 if (copyin((caddr_t)scp, &ksc, sizeof(ksc)) != 0) 1635 return (EFAULT); 1636 1637 if (ksc.sc_regs[R_ZERO] != 0xACEDBADE) /* magic number */ 1638 return (EINVAL); 1639 1640 /* Restore register context. */ 1641 p->p_md.md_tf->tf_regs[FRAME_PC] = ksc.sc_pc; 1642 p->p_md.md_tf->tf_regs[FRAME_PS] = 1643 (ksc.sc_ps | ALPHA_PSL_USERSET) & ~ALPHA_PSL_USERCLR; 1644 1645 regtoframe((struct reg *)ksc.sc_regs, p->p_md.md_tf); 1646 alpha_pal_wrusp(ksc.sc_regs[R_SP]); 1647 1648 /* XXX ksc.sc_ownedfp ? */ 1649 if (p->p_addr->u_pcb.pcb_fpcpu != NULL) 1650 fpusave_proc(p, 0); 1651 bcopy((struct fpreg *)ksc.sc_fpregs, &p->p_addr->u_pcb.pcb_fp, 1652 sizeof(struct fpreg)); 1653 /* XXX ksc.sc_fp_control ? */ 1654 1655 /* Restore signal stack. */ 1656 if (ksc.sc_onstack & SS_ONSTACK) 1657 p->p_sigctx.ps_sigstk.ss_flags |= SS_ONSTACK; 1658 else 1659 p->p_sigctx.ps_sigstk.ss_flags &= ~SS_ONSTACK; 1660 1661 /* Restore signal mask. */ 1662 (void) sigprocmask1(p, SIG_SETMASK, &ksc.sc_mask, 0); 1663 1664 #ifdef DEBUG 1665 if (sigdebug & SDB_FOLLOW) 1666 printf("sigreturn(%d): returns\n", p->p_pid); 1667 #endif 1668 return (EJUSTRETURN); 1669 } 1670 1671 /* 1672 * machine dependent system variables. 1673 */ 1674 int 1675 cpu_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 1676 int *name; 1677 u_int namelen; 1678 void *oldp; 1679 size_t *oldlenp; 1680 void *newp; 1681 size_t newlen; 1682 struct proc *p; 1683 { 1684 dev_t consdev; 1685 1686 /* all sysctl names at this level are terminal */ 1687 if (namelen != 1) 1688 return (ENOTDIR); /* overloaded */ 1689 1690 switch (name[0]) { 1691 case CPU_CONSDEV: 1692 if (cn_tab != NULL) 1693 consdev = cn_tab->cn_dev; 1694 else 1695 consdev = NODEV; 1696 return (sysctl_rdstruct(oldp, oldlenp, newp, &consdev, 1697 sizeof consdev)); 1698 1699 case CPU_ROOT_DEVICE: 1700 return (sysctl_rdstring(oldp, oldlenp, newp, 1701 root_device->dv_xname)); 1702 1703 case CPU_UNALIGNED_PRINT: 1704 return (sysctl_int(oldp, oldlenp, newp, newlen, 1705 &alpha_unaligned_print)); 1706 1707 case CPU_UNALIGNED_FIX: 1708 return (sysctl_int(oldp, oldlenp, newp, newlen, 1709 &alpha_unaligned_fix)); 1710 1711 case CPU_UNALIGNED_SIGBUS: 1712 return (sysctl_int(oldp, oldlenp, newp, newlen, 1713 &alpha_unaligned_sigbus)); 1714 1715 case CPU_BOOTED_KERNEL: 1716 return (sysctl_rdstring(oldp, oldlenp, newp, 1717 bootinfo.booted_kernel)); 1718 1719 default: 1720 return (EOPNOTSUPP); 1721 } 1722 /* NOTREACHED */ 1723 } 1724 1725 /* 1726 * Set registers on exec. 1727 */ 1728 void 1729 setregs(p, pack, stack) 1730 register struct proc *p; 1731 struct exec_package *pack; 1732 u_long stack; 1733 { 1734 struct trapframe *tfp = p->p_md.md_tf; 1735 #ifdef DEBUG 1736 int i; 1737 #endif 1738 1739 #ifdef DEBUG 1740 /* 1741 * Crash and dump, if the user requested it. 1742 */ 1743 if (boothowto & RB_DUMP) 1744 panic("crash requested by boot flags"); 1745 #endif 1746 1747 #ifdef DEBUG 1748 for (i = 0; i < FRAME_SIZE; i++) 1749 tfp->tf_regs[i] = 0xbabefacedeadbeef; 1750 #else 1751 bzero(tfp->tf_regs, FRAME_SIZE * sizeof tfp->tf_regs[0]); 1752 #endif 1753 bzero(&p->p_addr->u_pcb.pcb_fp, sizeof p->p_addr->u_pcb.pcb_fp); 1754 p->p_addr->u_pcb.pcb_fp.fpr_cr = FPCR_INED 1755 | FPCR_UNFD 1756 | FPCR_UNDZ 1757 | FPCR_DYN(FP_RN) 1758 | FPCR_OVFD 1759 | FPCR_DZED 1760 | FPCR_INVD 1761 | FPCR_DNZ; 1762 alpha_pal_wrusp(stack); 1763 tfp->tf_regs[FRAME_PS] = ALPHA_PSL_USERSET; 1764 tfp->tf_regs[FRAME_PC] = pack->ep_entry & ~3; 1765 1766 tfp->tf_regs[FRAME_A0] = stack; /* a0 = sp */ 1767 tfp->tf_regs[FRAME_A1] = 0; /* a1 = rtld cleanup */ 1768 tfp->tf_regs[FRAME_A2] = 0; /* a2 = rtld object */ 1769 tfp->tf_regs[FRAME_A3] = (u_int64_t)PS_STRINGS; /* a3 = ps_strings */ 1770 tfp->tf_regs[FRAME_T12] = tfp->tf_regs[FRAME_PC]; /* a.k.a. PV */ 1771 1772 p->p_md.md_flags &= ~MDP_FPUSED; 1773 if (p->p_addr->u_pcb.pcb_fpcpu != NULL) 1774 fpusave_proc(p, 0); 1775 } 1776 1777 /* 1778 * Release the FPU. 1779 */ 1780 void 1781 fpusave_cpu(struct cpu_info *ci, int save) 1782 { 1783 struct proc *p; 1784 #if defined(MULTIPROCESSOR) 1785 int s; 1786 #endif 1787 1788 KDASSERT(ci == curcpu()); 1789 1790 p = ci->ci_fpcurproc; 1791 if (p == NULL) 1792 return; 1793 1794 if (save) { 1795 alpha_pal_wrfen(1); 1796 savefpstate(&p->p_addr->u_pcb.pcb_fp); 1797 } 1798 1799 alpha_pal_wrfen(0); 1800 1801 #if defined(MULTIPROCESSOR) 1802 s = splhigh(); 1803 #endif 1804 p->p_addr->u_pcb.pcb_fpcpu = NULL; 1805 ci->ci_fpcurproc = NULL; 1806 #if defined(MULTIPROCESSOR) 1807 splx(s); 1808 alpha_mb(); 1809 #endif 1810 } 1811 1812 /* 1813 * Synchronize FP state for this process. 1814 */ 1815 void 1816 fpusave_proc(struct proc *p, int save) 1817 { 1818 struct cpu_info *ci = curcpu(); 1819 struct cpu_info *oci; 1820 1821 KDASSERT(p->p_addr != NULL); 1822 KDASSERT(p->p_flag & P_INMEM); 1823 1824 oci = p->p_addr->u_pcb.pcb_fpcpu; 1825 if (oci == NULL) 1826 return; 1827 1828 #if defined(MULTIPROCESSOR) 1829 if (oci == ci) { 1830 int s; 1831 KASSERT(ci->ci_fpcurproc == p); 1832 s = splhigh(); 1833 fpusave_cpu(ci, save); 1834 splx(s); 1835 } else { 1836 u_long ipi = save ? ALPHA_IPI_SYNCH_FPU : 1837 ALPHA_IPI_DISCARD_FPU; 1838 1839 KASSERT(oci->ci_fpcurproc == p); 1840 do { 1841 alpha_send_ipi(oci->ci_cpuid, ipi); 1842 } while (p->p_addr->u_pcb.pcb_fpcpu != NULL); 1843 } 1844 #else 1845 KASSERT(ci->ci_fpcurproc == p); 1846 fpusave_cpu(ci, save); 1847 #endif /* MULTIPROCESSOR */ 1848 } 1849 1850 void 1851 spl0() 1852 { 1853 1854 if (ssir) { 1855 (void) alpha_pal_swpipl(ALPHA_PSL_IPL_SOFT); 1856 softintr_dispatch(); 1857 } 1858 1859 (void) alpha_pal_swpipl(ALPHA_PSL_IPL_0); 1860 } 1861 1862 /* 1863 * The following primitives manipulate the run queues. _whichqs tells which 1864 * of the 32 queues _qs have processes in them. Setrunqueue puts processes 1865 * into queues, Remrunqueue removes them from queues. The running process is 1866 * on no queue, other processes are on a queue related to p->p_priority, 1867 * divided by 4 actually to shrink the 0-127 range of priorities into the 32 1868 * available queues. 1869 */ 1870 /* 1871 * setrunqueue(p) 1872 * proc *p; 1873 * 1874 * Call should be made at splclock(), and p->p_stat should be SRUN. 1875 */ 1876 1877 void 1878 setrunqueue(p) 1879 struct proc *p; 1880 { 1881 int bit; 1882 1883 /* firewall: p->p_back must be NULL */ 1884 if (p->p_back != NULL) 1885 panic("setrunqueue"); 1886 1887 bit = p->p_priority >> 2; 1888 sched_whichqs |= (1 << bit); 1889 p->p_forw = (struct proc *)&sched_qs[bit]; 1890 p->p_back = sched_qs[bit].ph_rlink; 1891 p->p_back->p_forw = p; 1892 sched_qs[bit].ph_rlink = p; 1893 } 1894 1895 /* 1896 * remrunqueue(p) 1897 * 1898 * Call should be made at splclock(). 1899 */ 1900 void 1901 remrunqueue(p) 1902 struct proc *p; 1903 { 1904 int bit; 1905 1906 bit = p->p_priority >> 2; 1907 if ((sched_whichqs & (1 << bit)) == 0) 1908 panic("remrunqueue"); 1909 1910 p->p_back->p_forw = p->p_forw; 1911 p->p_forw->p_back = p->p_back; 1912 p->p_back = NULL; /* for firewall checking. */ 1913 1914 if ((struct proc *)&sched_qs[bit] == sched_qs[bit].ph_link) 1915 sched_whichqs &= ~(1 << bit); 1916 } 1917 1918 /* 1919 * Return the best possible estimate of the time in the timeval 1920 * to which tvp points. Unfortunately, we can't read the hardware registers. 1921 * We guarantee that the time will be greater than the value obtained by a 1922 * previous call. 1923 * 1924 * XXX PLEASE REWRITE ME TO USE THE CYCLE COUNTER AND DEAL WITH 1925 * XXX MULTIPLE CPUs IN A SANE WAY! 1926 */ 1927 void 1928 microtime(tvp) 1929 register struct timeval *tvp; 1930 { 1931 static struct timeval lasttime; 1932 static struct simplelock microtime_slock = SIMPLELOCK_INITIALIZER; 1933 int s; 1934 1935 s = splclock(); 1936 simple_lock(µtime_slock); 1937 1938 *tvp = time; 1939 #ifdef notdef 1940 tvp->tv_usec += clkread(); 1941 while (tvp->tv_usec >= 1000000) { 1942 tvp->tv_sec++; 1943 tvp->tv_usec -= 1000000; 1944 } 1945 #endif 1946 if (tvp->tv_sec == lasttime.tv_sec && 1947 tvp->tv_usec <= lasttime.tv_usec && 1948 (tvp->tv_usec = lasttime.tv_usec + 1) >= 1000000) { 1949 tvp->tv_sec++; 1950 tvp->tv_usec -= 1000000; 1951 } 1952 lasttime = *tvp; 1953 1954 simple_unlock(µtime_slock); 1955 splx(s); 1956 } 1957 1958 /* 1959 * Wait "n" microseconds. 1960 */ 1961 void 1962 delay(n) 1963 unsigned long n; 1964 { 1965 unsigned long pcc0, pcc1, curcycle, cycles, usec; 1966 1967 if (n == 0) 1968 return; 1969 1970 pcc0 = alpha_rpcc() & 0xffffffffUL; 1971 cycles = 0; 1972 usec = 0; 1973 1974 while (usec <= n) { 1975 /* 1976 * Get the next CPU cycle count- assumes that we cannot 1977 * have had more than one 32 bit overflow. 1978 */ 1979 pcc1 = alpha_rpcc() & 0xffffffffUL; 1980 if (pcc1 < pcc0) 1981 curcycle = (pcc1 + 0x100000000UL) - pcc0; 1982 else 1983 curcycle = pcc1 - pcc0; 1984 1985 /* 1986 * We now have the number of processor cycles since we 1987 * last checked. Add the current cycle count to the 1988 * running total. If it's over cycles_per_usec, increment 1989 * the usec counter. 1990 */ 1991 cycles += curcycle; 1992 while (cycles > cycles_per_usec) { 1993 usec++; 1994 cycles -= cycles_per_usec; 1995 } 1996 pcc0 = pcc1; 1997 } 1998 } 1999 2000 #if defined(COMPAT_OSF1) || 1 /* XXX */ 2001 void cpu_exec_ecoff_setregs __P((struct proc *, struct exec_package *, 2002 u_long)); 2003 #endif 2004 2005 #if 1 /* XXX */ 2006 void 2007 cpu_exec_ecoff_setregs(p, epp, stack) 2008 struct proc *p; 2009 struct exec_package *epp; 2010 u_long stack; 2011 { 2012 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2013 2014 setregs(p, epp, stack); 2015 p->p_md.md_tf->tf_regs[FRAME_GP] = execp->a.gp_value; 2016 } 2017 2018 /* 2019 * cpu_exec_ecoff_hook(): 2020 * cpu-dependent ECOFF format hook for execve(). 2021 * 2022 * Do any machine-dependent diddling of the exec package when doing ECOFF. 2023 * 2024 */ 2025 int 2026 cpu_exec_ecoff_probe(p, epp) 2027 struct proc *p; 2028 struct exec_package *epp; 2029 { 2030 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2031 int error; 2032 2033 if (execp->f.f_magic == ECOFF_MAGIC_NETBSD_ALPHA) 2034 error = 0; 2035 else 2036 error = ENOEXEC; 2037 2038 return (error); 2039 } 2040 #endif 2041 2042 int 2043 alpha_pa_access(pa) 2044 u_long pa; 2045 { 2046 int i; 2047 2048 for (i = 0; i < mem_cluster_cnt; i++) { 2049 if (pa < mem_clusters[i].start) 2050 continue; 2051 if ((pa - mem_clusters[i].start) >= 2052 (mem_clusters[i].size & ~PAGE_MASK)) 2053 continue; 2054 return (mem_clusters[i].size & PAGE_MASK); /* prot */ 2055 } 2056 2057 /* 2058 * Address is not a memory address. If we're secure, disallow 2059 * access. Otherwise, grant read/write. 2060 */ 2061 if (securelevel > 0) 2062 return (PROT_NONE); 2063 else 2064 return (PROT_READ | PROT_WRITE); 2065 } 2066 2067 /* XXX XXX BEGIN XXX XXX */ 2068 paddr_t alpha_XXX_dmamap_or; /* XXX */ 2069 /* XXX */ 2070 paddr_t /* XXX */ 2071 alpha_XXX_dmamap(v) /* XXX */ 2072 vaddr_t v; /* XXX */ 2073 { /* XXX */ 2074 /* XXX */ 2075 return (vtophys(v) | alpha_XXX_dmamap_or); /* XXX */ 2076 } /* XXX */ 2077 /* XXX XXX END XXX XXX */ 2078 2079 char * 2080 dot_conv(x) 2081 unsigned long x; 2082 { 2083 int i; 2084 char *xc; 2085 static int next; 2086 static char space[2][20]; 2087 2088 xc = space[next ^= 1] + sizeof space[0]; 2089 *--xc = '\0'; 2090 for (i = 0;; ++i) { 2091 if (i && (i & 3) == 0) 2092 *--xc = '.'; 2093 *--xc = "0123456789abcdef"[x & 0xf]; 2094 x >>= 4; 2095 if (x == 0) 2096 break; 2097 } 2098 return xc; 2099 } 2100
Indexes created Sat Oct 11 19:10:01 GMT 2025