machdep.c revision 1.228
1 /* $NetBSD: machdep.c,v 1.228 2000/12/22 22:58:52 jdolecek 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 1.228 2000/12/22 22:58:52 jdolecek 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 #include <machine/alpha.h> 127 128 vm_map_t exec_map = NULL; 129 vm_map_t mb_map = NULL; 130 vm_map_t phys_map = NULL; 131 132 caddr_t msgbufaddr; 133 134 int maxmem; /* max memory per process */ 135 136 int totalphysmem; /* total amount of physical memory in system */ 137 int physmem; /* physical memory used by NetBSD + some rsvd */ 138 int resvmem; /* amount of memory reserved for PROM */ 139 int unusedmem; /* amount of memory for OS that we don't use */ 140 int unknownmem; /* amount of memory with an unknown use */ 141 142 int cputype; /* system type, from the RPB */ 143 144 int bootdev_debug = 0; /* patchable, or from DDB */ 145 146 /* 147 * XXX We need an address to which we can assign things so that they 148 * won't be optimized away because we didn't use the value. 149 */ 150 u_int32_t no_optimize; 151 152 /* the following is used externally (sysctl_hw) */ 153 char machine[] = MACHINE; /* from <machine/param.h> */ 154 char machine_arch[] = MACHINE_ARCH; /* from <machine/param.h> */ 155 char cpu_model[128]; 156 157 struct user *proc0paddr; 158 159 /* Number of machine cycles per microsecond */ 160 u_int64_t cycles_per_usec; 161 162 /* number of cpus in the box. really! */ 163 int ncpus; 164 165 struct bootinfo_kernel bootinfo; 166 167 /* For built-in TCDS */ 168 #if defined(DEC_3000_300) || defined(DEC_3000_500) 169 u_int8_t dec_3000_scsiid[2], dec_3000_scsifast[2]; 170 #endif 171 172 struct platform platform; 173 174 #ifdef DDB 175 /* start and end of kernel symbol table */ 176 void *ksym_start, *ksym_end; 177 #endif 178 179 /* for cpu_sysctl() */ 180 int alpha_unaligned_print = 1; /* warn about unaligned accesses */ 181 int alpha_unaligned_fix = 1; /* fix up unaligned accesses */ 182 int alpha_unaligned_sigbus = 0; /* don't SIGBUS on fixed-up accesses */ 183 184 /* 185 * XXX This should be dynamically sized, but we have the chicken-egg problem! 186 * XXX it should also be larger than it is, because not all of the mddt 187 * XXX clusters end up being used for VM. 188 */ 189 phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX]; /* low size bits overloaded */ 190 int mem_cluster_cnt; 191 192 int cpu_dump __P((void)); 193 int cpu_dumpsize __P((void)); 194 u_long cpu_dump_mempagecnt __P((void)); 195 void dumpsys __P((void)); 196 void identifycpu __P((void)); 197 void printregs __P((struct reg *)); 198 199 void 200 alpha_init(pfn, ptb, bim, bip, biv) 201 u_long pfn; /* first free PFN number */ 202 u_long ptb; /* PFN of current level 1 page table */ 203 u_long bim; /* bootinfo magic */ 204 u_long bip; /* bootinfo pointer */ 205 u_long biv; /* bootinfo version */ 206 { 207 extern char kernel_text[], _end[]; 208 struct mddt *mddtp; 209 struct mddt_cluster *memc; 210 int i, mddtweird; 211 struct vm_physseg *vps; 212 vaddr_t kernstart, kernend; 213 paddr_t kernstartpfn, kernendpfn, pfn0, pfn1; 214 vsize_t size; 215 cpuid_t cpu_id; 216 struct cpu_info *ci; 217 char *p; 218 caddr_t v; 219 const char *bootinfo_msg; 220 const struct cpuinit *c; 221 222 /* NO OUTPUT ALLOWED UNTIL FURTHER NOTICE */ 223 224 /* 225 * Turn off interrupts (not mchecks) and floating point. 226 * Make sure the instruction and data streams are consistent. 227 */ 228 (void)alpha_pal_swpipl(ALPHA_PSL_IPL_HIGH); 229 alpha_pal_wrfen(0); 230 ALPHA_TBIA(); 231 alpha_pal_imb(); 232 233 cpu_id = cpu_number(); 234 235 #if defined(MULTIPROCESSOR) 236 /* 237 * Set our SysValue to the address of our cpu_info structure. 238 * Secondary processors do this in their spinup trampoline. 239 */ 240 alpha_pal_wrval((u_long)&cpu_info[cpu_id]); 241 #endif 242 243 ci = curcpu(); 244 ci->ci_cpuid = cpu_id; 245 246 /* 247 * Get critical system information (if possible, from the 248 * information provided by the boot program). 249 */ 250 bootinfo_msg = NULL; 251 if (bim == BOOTINFO_MAGIC) { 252 if (biv == 0) { /* backward compat */ 253 biv = *(u_long *)bip; 254 bip += 8; 255 } 256 switch (biv) { 257 case 1: { 258 struct bootinfo_v1 *v1p = (struct bootinfo_v1 *)bip; 259 260 bootinfo.ssym = v1p->ssym; 261 bootinfo.esym = v1p->esym; 262 /* hwrpb may not be provided by boot block in v1 */ 263 if (v1p->hwrpb != NULL) { 264 bootinfo.hwrpb_phys = 265 ((struct rpb *)v1p->hwrpb)->rpb_phys; 266 bootinfo.hwrpb_size = v1p->hwrpbsize; 267 } else { 268 bootinfo.hwrpb_phys = 269 ((struct rpb *)HWRPB_ADDR)->rpb_phys; 270 bootinfo.hwrpb_size = 271 ((struct rpb *)HWRPB_ADDR)->rpb_size; 272 } 273 bcopy(v1p->boot_flags, bootinfo.boot_flags, 274 min(sizeof v1p->boot_flags, 275 sizeof bootinfo.boot_flags)); 276 bcopy(v1p->booted_kernel, bootinfo.booted_kernel, 277 min(sizeof v1p->booted_kernel, 278 sizeof bootinfo.booted_kernel)); 279 /* booted dev not provided in bootinfo */ 280 init_prom_interface((struct rpb *) 281 ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys)); 282 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 283 sizeof bootinfo.booted_dev); 284 break; 285 } 286 default: 287 bootinfo_msg = "unknown bootinfo version"; 288 goto nobootinfo; 289 } 290 } else { 291 bootinfo_msg = "boot program did not pass bootinfo"; 292 nobootinfo: 293 bootinfo.ssym = (u_long)_end; 294 bootinfo.esym = (u_long)_end; 295 bootinfo.hwrpb_phys = ((struct rpb *)HWRPB_ADDR)->rpb_phys; 296 bootinfo.hwrpb_size = ((struct rpb *)HWRPB_ADDR)->rpb_size; 297 init_prom_interface((struct rpb *)HWRPB_ADDR); 298 prom_getenv(PROM_E_BOOTED_OSFLAGS, bootinfo.boot_flags, 299 sizeof bootinfo.boot_flags); 300 prom_getenv(PROM_E_BOOTED_FILE, bootinfo.booted_kernel, 301 sizeof bootinfo.booted_kernel); 302 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 303 sizeof bootinfo.booted_dev); 304 } 305 306 /* 307 * Initialize the kernel's mapping of the RPB. It's needed for 308 * lots of things. 309 */ 310 hwrpb = (struct rpb *)ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys); 311 312 #if defined(DEC_3000_300) || defined(DEC_3000_500) 313 if (hwrpb->rpb_type == ST_DEC_3000_300 || 314 hwrpb->rpb_type == ST_DEC_3000_500) { 315 prom_getenv(PROM_E_SCSIID, dec_3000_scsiid, 316 sizeof(dec_3000_scsiid)); 317 prom_getenv(PROM_E_SCSIFAST, dec_3000_scsifast, 318 sizeof(dec_3000_scsifast)); 319 } 320 #endif 321 322 /* 323 * Remember how many cycles there are per microsecond, 324 * so that we can use delay(). Round up, for safety. 325 */ 326 cycles_per_usec = (hwrpb->rpb_cc_freq + 999999) / 1000000; 327 328 /* 329 * Initalize the (temporary) bootstrap console interface, so 330 * we can use printf until the VM system starts being setup. 331 * The real console is initialized before then. 332 */ 333 init_bootstrap_console(); 334 335 /* OUTPUT NOW ALLOWED */ 336 337 /* delayed from above */ 338 if (bootinfo_msg) 339 printf("WARNING: %s (0x%lx, 0x%lx, 0x%lx)\n", 340 bootinfo_msg, bim, bip, biv); 341 342 /* Initialize the trap vectors on the primary processor. */ 343 trap_init(); 344 345 /* 346 * Find out what hardware we're on, and do basic initialization. 347 */ 348 cputype = hwrpb->rpb_type; 349 if (cputype < 0) { 350 /* 351 * At least some white-box systems have SRM which 352 * reports a systype that's the negative of their 353 * blue-box counterpart. 354 */ 355 cputype = -cputype; 356 } 357 c = platform_lookup(cputype); 358 if (c == NULL) { 359 platform_not_supported(); 360 /* NOTREACHED */ 361 } 362 (*c->init)(); 363 strcpy(cpu_model, platform.model); 364 365 /* 366 * Initalize the real console, so that the bootstrap console is 367 * no longer necessary. 368 */ 369 (*platform.cons_init)(); 370 371 #ifdef DIAGNOSTIC 372 /* Paranoid sanity checking */ 373 374 /* We should always be running on the primary. */ 375 assert(hwrpb->rpb_primary_cpu_id == cpu_id); 376 377 /* 378 * On single-CPU systypes, the primary should always be CPU 0, 379 * except on Alpha 8200 systems where the CPU id is related 380 * to the VID, which is related to the Turbo Laser node id. 381 */ 382 if (cputype != ST_DEC_21000) 383 assert(hwrpb->rpb_primary_cpu_id == 0); 384 #endif 385 386 /* NO MORE FIRMWARE ACCESS ALLOWED */ 387 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 388 /* 389 * XXX (unless _PMAP_MAY_USE_PROM_CONSOLE is defined and 390 * XXX pmap_uses_prom_console() evaluates to non-zero.) 391 */ 392 #endif 393 394 /* 395 * find out this system's page size 396 */ 397 PAGE_SIZE = hwrpb->rpb_page_size; 398 if (PAGE_SIZE != 8192) 399 panic("page size %d != 8192?!", PAGE_SIZE); 400 401 /* 402 * Initialize PAGE_SIZE-dependent variables. 403 */ 404 uvm_setpagesize(); 405 406 /* 407 * Find the beginning and end of the kernel (and leave a 408 * bit of space before the beginning for the bootstrap 409 * stack). 410 */ 411 kernstart = trunc_page((vaddr_t)kernel_text) - 2 * PAGE_SIZE; 412 #ifdef DDB 413 ksym_start = (void *)bootinfo.ssym; 414 ksym_end = (void *)bootinfo.esym; 415 kernend = (vaddr_t)round_page((vaddr_t)ksym_end); 416 #else 417 kernend = (vaddr_t)round_page((vaddr_t)_end); 418 #endif 419 420 kernstartpfn = atop(ALPHA_K0SEG_TO_PHYS(kernstart)); 421 kernendpfn = atop(ALPHA_K0SEG_TO_PHYS(kernend)); 422 423 /* 424 * Find out how much memory is available, by looking at 425 * the memory cluster descriptors. This also tries to do 426 * its best to detect things things that have never been seen 427 * before... 428 */ 429 mddtp = (struct mddt *)(((caddr_t)hwrpb) + hwrpb->rpb_memdat_off); 430 431 /* MDDT SANITY CHECKING */ 432 mddtweird = 0; 433 if (mddtp->mddt_cluster_cnt < 2) { 434 mddtweird = 1; 435 printf("WARNING: weird number of mem clusters: %lu\n", 436 mddtp->mddt_cluster_cnt); 437 } 438 439 #if 0 440 printf("Memory cluster count: %d\n", mddtp->mddt_cluster_cnt); 441 #endif 442 443 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 444 memc = &mddtp->mddt_clusters[i]; 445 #if 0 446 printf("MEMC %d: pfn 0x%lx cnt 0x%lx usage 0x%lx\n", i, 447 memc->mddt_pfn, memc->mddt_pg_cnt, memc->mddt_usage); 448 #endif 449 totalphysmem += memc->mddt_pg_cnt; 450 if (mem_cluster_cnt < VM_PHYSSEG_MAX) { /* XXX */ 451 mem_clusters[mem_cluster_cnt].start = 452 ptoa(memc->mddt_pfn); 453 mem_clusters[mem_cluster_cnt].size = 454 ptoa(memc->mddt_pg_cnt); 455 if (memc->mddt_usage & MDDT_mbz || 456 memc->mddt_usage & MDDT_NONVOLATILE || /* XXX */ 457 memc->mddt_usage & MDDT_PALCODE) 458 mem_clusters[mem_cluster_cnt].size |= 459 PROT_READ; 460 else 461 mem_clusters[mem_cluster_cnt].size |= 462 PROT_READ | PROT_WRITE | PROT_EXEC; 463 mem_cluster_cnt++; 464 } 465 466 if (memc->mddt_usage & MDDT_mbz) { 467 mddtweird = 1; 468 printf("WARNING: mem cluster %d has weird " 469 "usage 0x%lx\n", i, memc->mddt_usage); 470 unknownmem += memc->mddt_pg_cnt; 471 continue; 472 } 473 if (memc->mddt_usage & MDDT_NONVOLATILE) { 474 /* XXX should handle these... */ 475 printf("WARNING: skipping non-volatile mem " 476 "cluster %d\n", i); 477 unusedmem += memc->mddt_pg_cnt; 478 continue; 479 } 480 if (memc->mddt_usage & MDDT_PALCODE) { 481 resvmem += memc->mddt_pg_cnt; 482 continue; 483 } 484 485 /* 486 * We have a memory cluster available for system 487 * software use. We must determine if this cluster 488 * holds the kernel. 489 */ 490 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 491 /* 492 * XXX If the kernel uses the PROM console, we only use the 493 * XXX memory after the kernel in the first system segment, 494 * XXX to avoid clobbering prom mapping, data, etc. 495 */ 496 if (!pmap_uses_prom_console() || physmem == 0) { 497 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 498 physmem += memc->mddt_pg_cnt; 499 pfn0 = memc->mddt_pfn; 500 pfn1 = memc->mddt_pfn + memc->mddt_pg_cnt; 501 if (pfn0 <= kernstartpfn && kernendpfn <= pfn1) { 502 /* 503 * Must compute the location of the kernel 504 * within the segment. 505 */ 506 #if 0 507 printf("Cluster %d contains kernel\n", i); 508 #endif 509 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 510 if (!pmap_uses_prom_console()) { 511 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 512 if (pfn0 < kernstartpfn) { 513 /* 514 * There is a chunk before the kernel. 515 */ 516 #if 0 517 printf("Loading chunk before kernel: " 518 "0x%lx / 0x%lx\n", pfn0, kernstartpfn); 519 #endif 520 uvm_page_physload(pfn0, kernstartpfn, 521 pfn0, kernstartpfn, VM_FREELIST_DEFAULT); 522 } 523 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 524 } 525 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 526 if (kernendpfn < pfn1) { 527 /* 528 * There is a chunk after the kernel. 529 */ 530 #if 0 531 printf("Loading chunk after kernel: " 532 "0x%lx / 0x%lx\n", kernendpfn, pfn1); 533 #endif 534 uvm_page_physload(kernendpfn, pfn1, 535 kernendpfn, pfn1, VM_FREELIST_DEFAULT); 536 } 537 } else { 538 /* 539 * Just load this cluster as one chunk. 540 */ 541 #if 0 542 printf("Loading cluster %d: 0x%lx / 0x%lx\n", i, 543 pfn0, pfn1); 544 #endif 545 uvm_page_physload(pfn0, pfn1, pfn0, pfn1, 546 VM_FREELIST_DEFAULT); 547 } 548 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 549 } 550 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 551 } 552 553 /* 554 * Dump out the MDDT if it looks odd... 555 */ 556 if (mddtweird) { 557 printf("\n"); 558 printf("complete memory cluster information:\n"); 559 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 560 printf("mddt %d:\n", i); 561 printf("\tpfn %lx\n", 562 mddtp->mddt_clusters[i].mddt_pfn); 563 printf("\tcnt %lx\n", 564 mddtp->mddt_clusters[i].mddt_pg_cnt); 565 printf("\ttest %lx\n", 566 mddtp->mddt_clusters[i].mddt_pg_test); 567 printf("\tbva %lx\n", 568 mddtp->mddt_clusters[i].mddt_v_bitaddr); 569 printf("\tbpa %lx\n", 570 mddtp->mddt_clusters[i].mddt_p_bitaddr); 571 printf("\tbcksum %lx\n", 572 mddtp->mddt_clusters[i].mddt_bit_cksum); 573 printf("\tusage %lx\n", 574 mddtp->mddt_clusters[i].mddt_usage); 575 } 576 printf("\n"); 577 } 578 579 if (totalphysmem == 0) 580 panic("can't happen: system seems to have no memory!"); 581 maxmem = physmem; 582 #if 0 583 printf("totalphysmem = %d\n", totalphysmem); 584 printf("physmem = %d\n", physmem); 585 printf("resvmem = %d\n", resvmem); 586 printf("unusedmem = %d\n", unusedmem); 587 printf("unknownmem = %d\n", unknownmem); 588 #endif 589 590 /* 591 * Initialize error message buffer (at end of core). 592 */ 593 { 594 vsize_t sz = (vsize_t)round_page(MSGBUFSIZE); 595 vsize_t reqsz = sz; 596 597 vps = &vm_physmem[vm_nphysseg - 1]; 598 599 /* shrink so that it'll fit in the last segment */ 600 if ((vps->avail_end - vps->avail_start) < atop(sz)) 601 sz = ptoa(vps->avail_end - vps->avail_start); 602 603 vps->end -= atop(sz); 604 vps->avail_end -= atop(sz); 605 msgbufaddr = (caddr_t) ALPHA_PHYS_TO_K0SEG(ptoa(vps->end)); 606 initmsgbuf(msgbufaddr, sz); 607 608 /* Remove the last segment if it now has no pages. */ 609 if (vps->start == vps->end) 610 vm_nphysseg--; 611 612 /* warn if the message buffer had to be shrunk */ 613 if (sz != reqsz) 614 printf("WARNING: %ld bytes not available for msgbuf " 615 "in last cluster (%ld used)\n", reqsz, sz); 616 617 } 618 619 /* 620 * Init mapping for u page(s) for proc 0 621 */ 622 proc0.p_addr = proc0paddr = 623 (struct user *)pmap_steal_memory(UPAGES * PAGE_SIZE, NULL, NULL); 624 625 /* 626 * Allocate space for system data structures. These data structures 627 * are allocated here instead of cpu_startup() because physical 628 * memory is directly addressable. We don't have to map these into 629 * virtual address space. 630 */ 631 size = (vsize_t)allocsys(NULL, NULL); 632 v = (caddr_t)pmap_steal_memory(size, NULL, NULL); 633 if ((allocsys(v, NULL) - v) != size) 634 panic("alpha_init: table size inconsistency"); 635 636 /* 637 * Initialize the virtual memory system, and set the 638 * page table base register in proc 0's PCB. 639 */ 640 pmap_bootstrap(ALPHA_PHYS_TO_K0SEG(ptb << PGSHIFT), 641 hwrpb->rpb_max_asn, hwrpb->rpb_pcs_cnt); 642 643 /* 644 * Initialize the rest of proc 0's PCB, and cache its physical 645 * address. 646 */ 647 proc0.p_md.md_pcbpaddr = 648 (struct pcb *)ALPHA_K0SEG_TO_PHYS((vaddr_t)&proc0paddr->u_pcb); 649 650 /* 651 * Set the kernel sp, reserving space for an (empty) trapframe, 652 * and make proc0's trapframe pointer point to it for sanity. 653 */ 654 proc0paddr->u_pcb.pcb_hw.apcb_ksp = 655 (u_int64_t)proc0paddr + USPACE - sizeof(struct trapframe); 656 proc0.p_md.md_tf = 657 (struct trapframe *)proc0paddr->u_pcb.pcb_hw.apcb_ksp; 658 659 /* 660 * Initialize the primary CPU's idle PCB to proc0's. In a 661 * MULTIPROCESSOR configuration, each CPU will later get 662 * its own idle PCB when autoconfiguration runs. 663 */ 664 ci->ci_idle_pcb = &proc0paddr->u_pcb; 665 ci->ci_idle_pcb_paddr = (u_long)proc0.p_md.md_pcbpaddr; 666 667 /* Indicate that proc0 has a CPU. */ 668 proc0.p_cpu = ci; 669 670 /* 671 * Look at arguments passed to us and compute boothowto. 672 */ 673 674 boothowto = RB_SINGLE; 675 #ifdef KADB 676 boothowto |= RB_KDB; 677 #endif 678 for (p = bootinfo.boot_flags; p && *p != '\0'; p++) { 679 /* 680 * Note that we'd really like to differentiate case here, 681 * but the Alpha AXP Architecture Reference Manual 682 * says that we shouldn't. 683 */ 684 switch (*p) { 685 case 'a': /* autoboot */ 686 case 'A': 687 boothowto &= ~RB_SINGLE; 688 break; 689 690 #ifdef DEBUG 691 case 'c': /* crash dump immediately after autoconfig */ 692 case 'C': 693 boothowto |= RB_DUMP; 694 break; 695 #endif 696 697 #if defined(KGDB) || defined(DDB) 698 case 'd': /* break into the kernel debugger ASAP */ 699 case 'D': 700 boothowto |= RB_KDB; 701 break; 702 #endif 703 704 case 'h': /* always halt, never reboot */ 705 case 'H': 706 boothowto |= RB_HALT; 707 break; 708 709 #if 0 710 case 'm': /* mini root present in memory */ 711 case 'M': 712 boothowto |= RB_MINIROOT; 713 break; 714 #endif 715 716 case 'n': /* askname */ 717 case 'N': 718 boothowto |= RB_ASKNAME; 719 break; 720 721 case 's': /* single-user (default, supported for sanity) */ 722 case 'S': 723 boothowto |= RB_SINGLE; 724 break; 725 726 case 'q': /* quiet boot */ 727 case 'Q': 728 boothowto |= AB_QUIET; 729 break; 730 731 case 'v': /* verbose boot */ 732 case 'V': 733 boothowto |= AB_VERBOSE; 734 break; 735 736 case '-': 737 /* 738 * Just ignore this. It's not required, but it's 739 * common for it to be passed regardless. 740 */ 741 break; 742 743 default: 744 printf("Unrecognized boot flag '%c'.\n", *p); 745 break; 746 } 747 } 748 749 750 /* 751 * Figure out the number of cpus in the box, from RPB fields. 752 * Really. We mean it. 753 */ 754 for (i = 0; i < hwrpb->rpb_pcs_cnt; i++) { 755 struct pcs *pcsp; 756 757 pcsp = LOCATE_PCS(hwrpb, i); 758 if ((pcsp->pcs_flags & PCS_PP) != 0) 759 ncpus++; 760 } 761 762 /* 763 * Initialize debuggers, and break into them if appropriate. 764 */ 765 #ifdef DDB 766 db_machine_init(); 767 ddb_init((int)((u_int64_t)ksym_end - (u_int64_t)ksym_start), 768 ksym_start, ksym_end); 769 if (boothowto & RB_KDB) 770 Debugger(); 771 #endif 772 #ifdef KGDB 773 if (boothowto & RB_KDB) 774 kgdb_connect(0); 775 #endif 776 /* 777 * Figure out our clock frequency, from RPB fields. 778 */ 779 hz = hwrpb->rpb_intr_freq >> 12; 780 if (!(60 <= hz && hz <= 10240)) { 781 hz = 1024; 782 #ifdef DIAGNOSTIC 783 printf("WARNING: unbelievable rpb_intr_freq: %ld (%d hz)\n", 784 hwrpb->rpb_intr_freq, hz); 785 #endif 786 } 787 } 788 789 void 790 consinit() 791 { 792 793 /* 794 * Everything related to console initialization is done 795 * in alpha_init(). 796 */ 797 #if defined(DIAGNOSTIC) && defined(_PMAP_MAY_USE_PROM_CONSOLE) 798 printf("consinit: %susing prom console\n", 799 pmap_uses_prom_console() ? "" : "not "); 800 #endif 801 } 802 803 #include "pckbc.h" 804 #include "pckbd.h" 805 #if (NPCKBC > 0) && (NPCKBD == 0) 806 807 #include <dev/ic/pckbcvar.h> 808 809 /* 810 * This is called by the pbkbc driver if no pckbd is configured. 811 * On the i386, it is used to glue in the old, deprecated console 812 * code. On the Alpha, it does nothing. 813 */ 814 int 815 pckbc_machdep_cnattach(kbctag, kbcslot) 816 pckbc_tag_t kbctag; 817 pckbc_slot_t kbcslot; 818 { 819 820 return (ENXIO); 821 } 822 #endif /* NPCKBC > 0 && NPCKBD == 0 */ 823 824 void 825 cpu_startup() 826 { 827 register unsigned i; 828 int base, residual; 829 vaddr_t minaddr, maxaddr; 830 vsize_t size; 831 char pbuf[9]; 832 #if defined(DEBUG) 833 extern int pmapdebug; 834 int opmapdebug = pmapdebug; 835 836 pmapdebug = 0; 837 #endif 838 839 /* 840 * Good {morning,afternoon,evening,night}. 841 */ 842 printf(version); 843 identifycpu(); 844 format_bytes(pbuf, sizeof(pbuf), ptoa(totalphysmem)); 845 printf("total memory = %s\n", pbuf); 846 format_bytes(pbuf, sizeof(pbuf), ptoa(resvmem)); 847 printf("(%s reserved for PROM, ", pbuf); 848 format_bytes(pbuf, sizeof(pbuf), ptoa(physmem)); 849 printf("%s used by NetBSD)\n", pbuf); 850 if (unusedmem) { 851 format_bytes(pbuf, sizeof(pbuf), ptoa(unusedmem)); 852 printf("WARNING: unused memory = %s\n", pbuf); 853 } 854 if (unknownmem) { 855 format_bytes(pbuf, sizeof(pbuf), ptoa(unknownmem)); 856 printf("WARNING: %s of memory with unknown purpose\n", pbuf); 857 } 858 859 /* 860 * Allocate virtual address space for file I/O buffers. 861 * Note they are different than the array of headers, 'buf', 862 * and usually occupy more virtual memory than physical. 863 */ 864 size = MAXBSIZE * nbuf; 865 if (uvm_map(kernel_map, (vaddr_t *) &buffers, round_page(size), 866 NULL, UVM_UNKNOWN_OFFSET, 0, 867 UVM_MAPFLAG(UVM_PROT_NONE, UVM_PROT_NONE, UVM_INH_NONE, 868 UVM_ADV_NORMAL, 0)) != KERN_SUCCESS) 869 panic("startup: cannot allocate VM for buffers"); 870 base = bufpages / nbuf; 871 residual = bufpages % nbuf; 872 for (i = 0; i < nbuf; i++) { 873 vsize_t curbufsize; 874 vaddr_t curbuf; 875 struct vm_page *pg; 876 877 /* 878 * Each buffer has MAXBSIZE bytes of VM space allocated. Of 879 * that MAXBSIZE space, we allocate and map (base+1) pages 880 * for the first "residual" buffers, and then we allocate 881 * "base" pages for the rest. 882 */ 883 curbuf = (vaddr_t) buffers + (i * MAXBSIZE); 884 curbufsize = NBPG * ((i < residual) ? (base+1) : base); 885 886 while (curbufsize) { 887 pg = uvm_pagealloc(NULL, 0, NULL, 0); 888 if (pg == NULL) 889 panic("cpu_startup: not enough memory for " 890 "buffer cache"); 891 pmap_kenter_pa(curbuf, VM_PAGE_TO_PHYS(pg), 892 VM_PROT_READ|VM_PROT_WRITE); 893 curbuf += PAGE_SIZE; 894 curbufsize -= PAGE_SIZE; 895 } 896 } 897 /* 898 * Allocate a submap for exec arguments. This map effectively 899 * limits the number of processes exec'ing at any time. 900 */ 901 exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 902 16 * NCARGS, VM_MAP_PAGEABLE, FALSE, NULL); 903 904 /* 905 * Allocate a submap for physio 906 */ 907 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 908 VM_PHYS_SIZE, 0, FALSE, NULL); 909 910 /* 911 * No need to allocate an mbuf cluster submap. Mbuf clusters 912 * are allocated via the pool allocator, and we use K0SEG to 913 * map those pages. 914 */ 915 916 #if defined(DEBUG) 917 pmapdebug = opmapdebug; 918 #endif 919 format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 920 printf("avail memory = %s\n", pbuf); 921 #if 0 922 { 923 extern u_long pmap_pages_stolen; 924 925 format_bytes(pbuf, sizeof(pbuf), pmap_pages_stolen * PAGE_SIZE); 926 printf("stolen memory for VM structures = %s\n", pbuf); 927 } 928 #endif 929 format_bytes(pbuf, sizeof(pbuf), bufpages * NBPG); 930 printf("using %ld buffers containing %s of memory\n", (long)nbuf, pbuf); 931 932 /* 933 * Set up buffers, so they can be used to read disk labels. 934 */ 935 bufinit(); 936 937 /* 938 * Set up the HWPCB so that it's safe to configure secondary 939 * CPUs. 940 */ 941 hwrpb_primary_init(); 942 } 943 944 /* 945 * Retrieve the platform name from the DSR. 946 */ 947 const char * 948 alpha_dsr_sysname() 949 { 950 struct dsrdb *dsr; 951 const char *sysname; 952 953 /* 954 * DSR does not exist on early HWRPB versions. 955 */ 956 if (hwrpb->rpb_version < HWRPB_DSRDB_MINVERS) 957 return (NULL); 958 959 dsr = (struct dsrdb *)(((caddr_t)hwrpb) + hwrpb->rpb_dsrdb_off); 960 sysname = (const char *)((caddr_t)dsr + (dsr->dsr_sysname_off + 961 sizeof(u_int64_t))); 962 return (sysname); 963 } 964 965 /* 966 * Lookup the system specified system variation in the provided table, 967 * returning the model string on match. 968 */ 969 const char * 970 alpha_variation_name(variation, avtp) 971 u_int64_t variation; 972 const struct alpha_variation_table *avtp; 973 { 974 int i; 975 976 for (i = 0; avtp[i].avt_model != NULL; i++) 977 if (avtp[i].avt_variation == variation) 978 return (avtp[i].avt_model); 979 return (NULL); 980 } 981 982 /* 983 * Generate a default platform name based for unknown system variations. 984 */ 985 const char * 986 alpha_unknown_sysname() 987 { 988 static char s[128]; /* safe size */ 989 990 sprintf(s, "%s family, unknown model variation 0x%lx", 991 platform.family, hwrpb->rpb_variation & SV_ST_MASK); 992 return ((const char *)s); 993 } 994 995 void 996 identifycpu() 997 { 998 char *s; 999 int i; 1000 1001 /* 1002 * print out CPU identification information. 1003 */ 1004 printf("%s", cpu_model); 1005 for(s = cpu_model; *s; ++s) 1006 if(strncasecmp(s, "MHz", 3) == 0) 1007 goto skipMHz; 1008 printf(", %ldMHz", hwrpb->rpb_cc_freq / 1000000); 1009 skipMHz: 1010 printf(", s/n "); 1011 for (i = 0; i < 10; i++) 1012 printf("%c", hwrpb->rpb_ssn[i]); 1013 printf("\n"); 1014 printf("%ld byte page size, %d processor%s.\n", 1015 hwrpb->rpb_page_size, ncpus, ncpus == 1 ? "" : "s"); 1016 #if 0 1017 /* this isn't defined for any systems that we run on? */ 1018 printf("serial number 0x%lx 0x%lx\n", 1019 ((long *)hwrpb->rpb_ssn)[0], ((long *)hwrpb->rpb_ssn)[1]); 1020 1021 /* and these aren't particularly useful! */ 1022 printf("variation: 0x%lx, revision 0x%lx\n", 1023 hwrpb->rpb_variation, *(long *)hwrpb->rpb_revision); 1024 #endif 1025 } 1026 1027 int waittime = -1; 1028 struct pcb dumppcb; 1029 1030 void 1031 cpu_reboot(howto, bootstr) 1032 int howto; 1033 char *bootstr; 1034 { 1035 #if defined(MULTIPROCESSOR) 1036 u_long cpu_id = cpu_number(); 1037 u_long wait_mask = (1UL << cpu_id) | 1038 (1UL << hwrpb->rpb_primary_cpu_id); 1039 int i; 1040 #endif 1041 1042 /* If "always halt" was specified as a boot flag, obey. */ 1043 if ((boothowto & RB_HALT) != 0) 1044 howto |= RB_HALT; 1045 1046 boothowto = howto; 1047 1048 /* If system is cold, just halt. */ 1049 if (cold) { 1050 boothowto |= RB_HALT; 1051 goto haltsys; 1052 } 1053 1054 if ((boothowto & RB_NOSYNC) == 0 && waittime < 0) { 1055 waittime = 0; 1056 vfs_shutdown(); 1057 /* 1058 * If we've been adjusting the clock, the todr 1059 * will be out of synch; adjust it now. 1060 */ 1061 resettodr(); 1062 } 1063 1064 /* Disable interrupts. */ 1065 splhigh(); 1066 1067 #if defined(MULTIPROCESSOR) 1068 /* 1069 * Halt all other CPUs. If we're not the primary, the 1070 * primary will spin, waiting for us to halt. 1071 */ 1072 alpha_broadcast_ipi(ALPHA_IPI_HALT); 1073 1074 for (i = 0; i < 10000; i++) { 1075 alpha_mb(); 1076 if (cpus_running == wait_mask) 1077 break; 1078 delay(1000); 1079 } 1080 alpha_mb(); 1081 if (cpus_running != wait_mask) 1082 printf("WARNING: Unable to halt secondary CPUs (0x%lx)\n", 1083 cpus_running); 1084 #endif /* MULTIPROCESSOR */ 1085 1086 /* If rebooting and a dump is requested do it. */ 1087 #if 0 1088 if ((boothowto & (RB_DUMP | RB_HALT)) == RB_DUMP) 1089 #else 1090 if (boothowto & RB_DUMP) 1091 #endif 1092 dumpsys(); 1093 1094 haltsys: 1095 1096 /* run any shutdown hooks */ 1097 doshutdownhooks(); 1098 1099 #ifdef BOOTKEY 1100 printf("hit any key to %s...\n", howto & RB_HALT ? "halt" : "reboot"); 1101 cnpollc(1); /* for proper keyboard command handling */ 1102 cngetc(); 1103 cnpollc(0); 1104 printf("\n"); 1105 #endif 1106 1107 /* Finally, powerdown/halt/reboot the system. */ 1108 if ((boothowto & RB_POWERDOWN) == RB_POWERDOWN && 1109 platform.powerdown != NULL) { 1110 (*platform.powerdown)(); 1111 printf("WARNING: powerdown failed!\n"); 1112 } 1113 printf("%s\n\n", (boothowto & RB_HALT) ? "halted." : "rebooting..."); 1114 #if defined(MULTIPROCESSOR) 1115 if (cpu_id != hwrpb->rpb_primary_cpu_id) 1116 cpu_halt(); 1117 else 1118 #endif 1119 prom_halt(boothowto & RB_HALT); 1120 /*NOTREACHED*/ 1121 } 1122 1123 /* 1124 * These variables are needed by /sbin/savecore 1125 */ 1126 u_long dumpmag = 0x8fca0101; /* magic number */ 1127 int dumpsize = 0; /* pages */ 1128 long dumplo = 0; /* blocks */ 1129 1130 /* 1131 * cpu_dumpsize: calculate size of machine-dependent kernel core dump headers. 1132 */ 1133 int 1134 cpu_dumpsize() 1135 { 1136 int size; 1137 1138 size = ALIGN(sizeof(kcore_seg_t)) + ALIGN(sizeof(cpu_kcore_hdr_t)) + 1139 ALIGN(mem_cluster_cnt * sizeof(phys_ram_seg_t)); 1140 if (roundup(size, dbtob(1)) != dbtob(1)) 1141 return -1; 1142 1143 return (1); 1144 } 1145 1146 /* 1147 * cpu_dump_mempagecnt: calculate size of RAM (in pages) to be dumped. 1148 */ 1149 u_long 1150 cpu_dump_mempagecnt() 1151 { 1152 u_long i, n; 1153 1154 n = 0; 1155 for (i = 0; i < mem_cluster_cnt; i++) 1156 n += atop(mem_clusters[i].size); 1157 return (n); 1158 } 1159 1160 /* 1161 * cpu_dump: dump machine-dependent kernel core dump headers. 1162 */ 1163 int 1164 cpu_dump() 1165 { 1166 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1167 char buf[dbtob(1)]; 1168 kcore_seg_t *segp; 1169 cpu_kcore_hdr_t *cpuhdrp; 1170 phys_ram_seg_t *memsegp; 1171 int i; 1172 1173 dump = bdevsw[major(dumpdev)].d_dump; 1174 1175 bzero(buf, sizeof buf); 1176 segp = (kcore_seg_t *)buf; 1177 cpuhdrp = (cpu_kcore_hdr_t *)&buf[ALIGN(sizeof(*segp))]; 1178 memsegp = (phys_ram_seg_t *)&buf[ ALIGN(sizeof(*segp)) + 1179 ALIGN(sizeof(*cpuhdrp))]; 1180 1181 /* 1182 * Generate a segment header. 1183 */ 1184 CORE_SETMAGIC(*segp, KCORE_MAGIC, MID_MACHINE, CORE_CPU); 1185 segp->c_size = dbtob(1) - ALIGN(sizeof(*segp)); 1186 1187 /* 1188 * Add the machine-dependent header info. 1189 */ 1190 cpuhdrp->lev1map_pa = ALPHA_K0SEG_TO_PHYS((vaddr_t)kernel_lev1map); 1191 cpuhdrp->page_size = PAGE_SIZE; 1192 cpuhdrp->nmemsegs = mem_cluster_cnt; 1193 1194 /* 1195 * Fill in the memory segment descriptors. 1196 */ 1197 for (i = 0; i < mem_cluster_cnt; i++) { 1198 memsegp[i].start = mem_clusters[i].start; 1199 memsegp[i].size = mem_clusters[i].size & ~PAGE_MASK; 1200 } 1201 1202 return (dump(dumpdev, dumplo, (caddr_t)buf, dbtob(1))); 1203 } 1204 1205 /* 1206 * This is called by main to set dumplo and dumpsize. 1207 * Dumps always skip the first NBPG of disk space 1208 * in case there might be a disk label stored there. 1209 * If there is extra space, put dump at the end to 1210 * reduce the chance that swapping trashes it. 1211 */ 1212 void 1213 cpu_dumpconf() 1214 { 1215 int nblks, dumpblks; /* size of dump area */ 1216 int maj; 1217 1218 if (dumpdev == NODEV) 1219 goto bad; 1220 maj = major(dumpdev); 1221 if (maj < 0 || maj >= nblkdev) 1222 panic("dumpconf: bad dumpdev=0x%x", dumpdev); 1223 if (bdevsw[maj].d_psize == NULL) 1224 goto bad; 1225 nblks = (*bdevsw[maj].d_psize)(dumpdev); 1226 if (nblks <= ctod(1)) 1227 goto bad; 1228 1229 dumpblks = cpu_dumpsize(); 1230 if (dumpblks < 0) 1231 goto bad; 1232 dumpblks += ctod(cpu_dump_mempagecnt()); 1233 1234 /* If dump won't fit (incl. room for possible label), punt. */ 1235 if (dumpblks > (nblks - ctod(1))) 1236 goto bad; 1237 1238 /* Put dump at end of partition */ 1239 dumplo = nblks - dumpblks; 1240 1241 /* dumpsize is in page units, and doesn't include headers. */ 1242 dumpsize = cpu_dump_mempagecnt(); 1243 return; 1244 1245 bad: 1246 dumpsize = 0; 1247 return; 1248 } 1249 1250 /* 1251 * Dump the kernel's image to the swap partition. 1252 */ 1253 #define BYTES_PER_DUMP NBPG 1254 1255 void 1256 dumpsys() 1257 { 1258 u_long totalbytesleft, bytes, i, n, memcl; 1259 u_long maddr; 1260 int psize; 1261 daddr_t blkno; 1262 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1263 int error; 1264 1265 /* Save registers. */ 1266 savectx(&dumppcb); 1267 1268 if (dumpdev == NODEV) 1269 return; 1270 1271 /* 1272 * For dumps during autoconfiguration, 1273 * if dump device has already configured... 1274 */ 1275 if (dumpsize == 0) 1276 cpu_dumpconf(); 1277 if (dumplo <= 0) { 1278 printf("\ndump to dev %u,%u not possible\n", major(dumpdev), 1279 minor(dumpdev)); 1280 return; 1281 } 1282 printf("\ndumping to dev %u,%u offset %ld\n", major(dumpdev), 1283 minor(dumpdev), dumplo); 1284 1285 psize = (*bdevsw[major(dumpdev)].d_psize)(dumpdev); 1286 printf("dump "); 1287 if (psize == -1) { 1288 printf("area unavailable\n"); 1289 return; 1290 } 1291 1292 /* XXX should purge all outstanding keystrokes. */ 1293 1294 if ((error = cpu_dump()) != 0) 1295 goto err; 1296 1297 totalbytesleft = ptoa(cpu_dump_mempagecnt()); 1298 blkno = dumplo + cpu_dumpsize(); 1299 dump = bdevsw[major(dumpdev)].d_dump; 1300 error = 0; 1301 1302 for (memcl = 0; memcl < mem_cluster_cnt; memcl++) { 1303 maddr = mem_clusters[memcl].start; 1304 bytes = mem_clusters[memcl].size & ~PAGE_MASK; 1305 1306 for (i = 0; i < bytes; i += n, totalbytesleft -= n) { 1307 1308 /* Print out how many MBs we to go. */ 1309 if ((totalbytesleft % (1024*1024)) == 0) 1310 printf("%ld ", totalbytesleft / (1024 * 1024)); 1311 1312 /* Limit size for next transfer. */ 1313 n = bytes - i; 1314 if (n > BYTES_PER_DUMP) 1315 n = BYTES_PER_DUMP; 1316 1317 error = (*dump)(dumpdev, blkno, 1318 (caddr_t)ALPHA_PHYS_TO_K0SEG(maddr), n); 1319 if (error) 1320 goto err; 1321 maddr += n; 1322 blkno += btodb(n); /* XXX? */ 1323 1324 /* XXX should look for keystrokes, to cancel. */ 1325 } 1326 } 1327 1328 err: 1329 switch (error) { 1330 1331 case ENXIO: 1332 printf("device bad\n"); 1333 break; 1334 1335 case EFAULT: 1336 printf("device not ready\n"); 1337 break; 1338 1339 case EINVAL: 1340 printf("area improper\n"); 1341 break; 1342 1343 case EIO: 1344 printf("i/o error\n"); 1345 break; 1346 1347 case EINTR: 1348 printf("aborted from console\n"); 1349 break; 1350 1351 case 0: 1352 printf("succeeded\n"); 1353 break; 1354 1355 default: 1356 printf("error %d\n", error); 1357 break; 1358 } 1359 printf("\n\n"); 1360 delay(1000); 1361 } 1362 1363 void 1364 frametoreg(framep, regp) 1365 struct trapframe *framep; 1366 struct reg *regp; 1367 { 1368 1369 regp->r_regs[R_V0] = framep->tf_regs[FRAME_V0]; 1370 regp->r_regs[R_T0] = framep->tf_regs[FRAME_T0]; 1371 regp->r_regs[R_T1] = framep->tf_regs[FRAME_T1]; 1372 regp->r_regs[R_T2] = framep->tf_regs[FRAME_T2]; 1373 regp->r_regs[R_T3] = framep->tf_regs[FRAME_T3]; 1374 regp->r_regs[R_T4] = framep->tf_regs[FRAME_T4]; 1375 regp->r_regs[R_T5] = framep->tf_regs[FRAME_T5]; 1376 regp->r_regs[R_T6] = framep->tf_regs[FRAME_T6]; 1377 regp->r_regs[R_T7] = framep->tf_regs[FRAME_T7]; 1378 regp->r_regs[R_S0] = framep->tf_regs[FRAME_S0]; 1379 regp->r_regs[R_S1] = framep->tf_regs[FRAME_S1]; 1380 regp->r_regs[R_S2] = framep->tf_regs[FRAME_S2]; 1381 regp->r_regs[R_S3] = framep->tf_regs[FRAME_S3]; 1382 regp->r_regs[R_S4] = framep->tf_regs[FRAME_S4]; 1383 regp->r_regs[R_S5] = framep->tf_regs[FRAME_S5]; 1384 regp->r_regs[R_S6] = framep->tf_regs[FRAME_S6]; 1385 regp->r_regs[R_A0] = framep->tf_regs[FRAME_A0]; 1386 regp->r_regs[R_A1] = framep->tf_regs[FRAME_A1]; 1387 regp->r_regs[R_A2] = framep->tf_regs[FRAME_A2]; 1388 regp->r_regs[R_A3] = framep->tf_regs[FRAME_A3]; 1389 regp->r_regs[R_A4] = framep->tf_regs[FRAME_A4]; 1390 regp->r_regs[R_A5] = framep->tf_regs[FRAME_A5]; 1391 regp->r_regs[R_T8] = framep->tf_regs[FRAME_T8]; 1392 regp->r_regs[R_T9] = framep->tf_regs[FRAME_T9]; 1393 regp->r_regs[R_T10] = framep->tf_regs[FRAME_T10]; 1394 regp->r_regs[R_T11] = framep->tf_regs[FRAME_T11]; 1395 regp->r_regs[R_RA] = framep->tf_regs[FRAME_RA]; 1396 regp->r_regs[R_T12] = framep->tf_regs[FRAME_T12]; 1397 regp->r_regs[R_AT] = framep->tf_regs[FRAME_AT]; 1398 regp->r_regs[R_GP] = framep->tf_regs[FRAME_GP]; 1399 /* regp->r_regs[R_SP] = framep->tf_regs[FRAME_SP]; XXX */ 1400 regp->r_regs[R_ZERO] = 0; 1401 } 1402 1403 void 1404 regtoframe(regp, framep) 1405 struct reg *regp; 1406 struct trapframe *framep; 1407 { 1408 1409 framep->tf_regs[FRAME_V0] = regp->r_regs[R_V0]; 1410 framep->tf_regs[FRAME_T0] = regp->r_regs[R_T0]; 1411 framep->tf_regs[FRAME_T1] = regp->r_regs[R_T1]; 1412 framep->tf_regs[FRAME_T2] = regp->r_regs[R_T2]; 1413 framep->tf_regs[FRAME_T3] = regp->r_regs[R_T3]; 1414 framep->tf_regs[FRAME_T4] = regp->r_regs[R_T4]; 1415 framep->tf_regs[FRAME_T5] = regp->r_regs[R_T5]; 1416 framep->tf_regs[FRAME_T6] = regp->r_regs[R_T6]; 1417 framep->tf_regs[FRAME_T7] = regp->r_regs[R_T7]; 1418 framep->tf_regs[FRAME_S0] = regp->r_regs[R_S0]; 1419 framep->tf_regs[FRAME_S1] = regp->r_regs[R_S1]; 1420 framep->tf_regs[FRAME_S2] = regp->r_regs[R_S2]; 1421 framep->tf_regs[FRAME_S3] = regp->r_regs[R_S3]; 1422 framep->tf_regs[FRAME_S4] = regp->r_regs[R_S4]; 1423 framep->tf_regs[FRAME_S5] = regp->r_regs[R_S5]; 1424 framep->tf_regs[FRAME_S6] = regp->r_regs[R_S6]; 1425 framep->tf_regs[FRAME_A0] = regp->r_regs[R_A0]; 1426 framep->tf_regs[FRAME_A1] = regp->r_regs[R_A1]; 1427 framep->tf_regs[FRAME_A2] = regp->r_regs[R_A2]; 1428 framep->tf_regs[FRAME_A3] = regp->r_regs[R_A3]; 1429 framep->tf_regs[FRAME_A4] = regp->r_regs[R_A4]; 1430 framep->tf_regs[FRAME_A5] = regp->r_regs[R_A5]; 1431 framep->tf_regs[FRAME_T8] = regp->r_regs[R_T8]; 1432 framep->tf_regs[FRAME_T9] = regp->r_regs[R_T9]; 1433 framep->tf_regs[FRAME_T10] = regp->r_regs[R_T10]; 1434 framep->tf_regs[FRAME_T11] = regp->r_regs[R_T11]; 1435 framep->tf_regs[FRAME_RA] = regp->r_regs[R_RA]; 1436 framep->tf_regs[FRAME_T12] = regp->r_regs[R_T12]; 1437 framep->tf_regs[FRAME_AT] = regp->r_regs[R_AT]; 1438 framep->tf_regs[FRAME_GP] = regp->r_regs[R_GP]; 1439 /* framep->tf_regs[FRAME_SP] = regp->r_regs[R_SP]; XXX */ 1440 /* ??? = regp->r_regs[R_ZERO]; */ 1441 } 1442 1443 void 1444 printregs(regp) 1445 struct reg *regp; 1446 { 1447 int i; 1448 1449 for (i = 0; i < 32; i++) 1450 printf("R%d:\t0x%016lx%s", i, regp->r_regs[i], 1451 i & 1 ? "\n" : "\t"); 1452 } 1453 1454 void 1455 regdump(framep) 1456 struct trapframe *framep; 1457 { 1458 struct reg reg; 1459 1460 frametoreg(framep, ®); 1461 reg.r_regs[R_SP] = alpha_pal_rdusp(); 1462 1463 printf("REGISTERS:\n"); 1464 printregs(®); 1465 } 1466 1467 #ifdef DEBUG 1468 int sigdebug = 0; 1469 int sigpid = 0; 1470 #define SDB_FOLLOW 0x01 1471 #define SDB_KSTACK 0x02 1472 #endif 1473 1474 /* 1475 * Send an interrupt to process. 1476 */ 1477 void 1478 sendsig(catcher, sig, mask, code) 1479 sig_t catcher; 1480 int sig; 1481 sigset_t *mask; 1482 u_long code; 1483 { 1484 struct proc *p = curproc; 1485 struct sigcontext *scp, ksc; 1486 struct trapframe *frame; 1487 int onstack, fsize, rndfsize; 1488 1489 frame = p->p_md.md_tf; 1490 1491 /* Do we need to jump onto the signal stack? */ 1492 onstack = 1493 (p->p_sigctx.ps_sigstk.ss_flags & (SS_DISABLE | SS_ONSTACK)) == 0 && 1494 (SIGACTION(p, sig).sa_flags & SA_ONSTACK) != 0; 1495 1496 /* Allocate space for the signal handler context. */ 1497 fsize = sizeof(ksc); 1498 rndfsize = ((fsize + 15) / 16) * 16; 1499 1500 if (onstack) 1501 scp = (struct sigcontext *)((caddr_t)p->p_sigctx.ps_sigstk.ss_sp + 1502 p->p_sigctx.ps_sigstk.ss_size); 1503 else 1504 scp = (struct sigcontext *)(alpha_pal_rdusp()); 1505 scp = (struct sigcontext *)((caddr_t)scp - rndfsize); 1506 1507 #ifdef DEBUG 1508 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1509 printf("sendsig(%d): sig %d ssp %p usp %p\n", p->p_pid, 1510 sig, &onstack, scp); 1511 #endif 1512 1513 /* Build stack frame for signal trampoline. */ 1514 ksc.sc_pc = frame->tf_regs[FRAME_PC]; 1515 ksc.sc_ps = frame->tf_regs[FRAME_PS]; 1516 1517 /* Save register context. */ 1518 frametoreg(frame, (struct reg *)ksc.sc_regs); 1519 ksc.sc_regs[R_ZERO] = 0xACEDBADE; /* magic number */ 1520 ksc.sc_regs[R_SP] = alpha_pal_rdusp(); 1521 1522 /* save the floating-point state, if necessary, then copy it. */ 1523 if (p->p_addr->u_pcb.pcb_fpcpu != NULL) 1524 fpusave_proc(p, 1); 1525 ksc.sc_ownedfp = p->p_md.md_flags & MDP_FPUSED; 1526 bcopy(&p->p_addr->u_pcb.pcb_fp, (struct fpreg *)ksc.sc_fpregs, 1527 sizeof(struct fpreg)); 1528 ksc.sc_fp_control = 0; /* XXX ? */ 1529 bzero(ksc.sc_reserved, sizeof ksc.sc_reserved); /* XXX */ 1530 bzero(ksc.sc_xxx, sizeof ksc.sc_xxx); /* XXX */ 1531 1532 /* Save signal stack. */ 1533 ksc.sc_onstack = p->p_sigctx.ps_sigstk.ss_flags & SS_ONSTACK; 1534 1535 /* Save signal mask. */ 1536 ksc.sc_mask = *mask; 1537 1538 #ifdef COMPAT_13 1539 /* 1540 * XXX We always have to save an old style signal mask because 1541 * XXX we might be delivering a signal to a process which will 1542 * XXX escape from the signal in a non-standard way and invoke 1543 * XXX sigreturn() directly. 1544 */ 1545 { 1546 /* Note: it's a long in the stack frame. */ 1547 sigset13_t mask13; 1548 1549 native_sigset_to_sigset13(mask, &mask13); 1550 ksc.__sc_mask13 = mask13; 1551 } 1552 #endif 1553 1554 #ifdef COMPAT_OSF1 1555 /* 1556 * XXX Create an OSF/1-style sigcontext and associated goo. 1557 */ 1558 #endif 1559 1560 if (copyout(&ksc, (caddr_t)scp, fsize) != 0) { 1561 /* 1562 * Process has trashed its stack; give it an illegal 1563 * instruction to halt it in its tracks. 1564 */ 1565 #ifdef DEBUG 1566 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1567 printf("sendsig(%d): copyout failed on sig %d\n", 1568 p->p_pid, sig); 1569 #endif 1570 sigexit(p, SIGILL); 1571 /* NOTREACHED */ 1572 } 1573 #ifdef DEBUG 1574 if (sigdebug & SDB_FOLLOW) 1575 printf("sendsig(%d): sig %d scp %p code %lx\n", p->p_pid, sig, 1576 scp, code); 1577 #endif 1578 1579 /* Set up the registers to return to sigcode. */ 1580 frame->tf_regs[FRAME_PC] = (u_int64_t)p->p_sigctx.ps_sigcode; 1581 frame->tf_regs[FRAME_A0] = sig; 1582 frame->tf_regs[FRAME_A1] = code; 1583 frame->tf_regs[FRAME_A2] = (u_int64_t)scp; 1584 frame->tf_regs[FRAME_T12] = (u_int64_t)catcher; /* t12 is pv */ 1585 alpha_pal_wrusp((unsigned long)scp); 1586 1587 /* Remember that we're now on the signal stack. */ 1588 if (onstack) 1589 p->p_sigctx.ps_sigstk.ss_flags |= SS_ONSTACK; 1590 1591 #ifdef DEBUG 1592 if (sigdebug & SDB_FOLLOW) 1593 printf("sendsig(%d): pc %lx, catcher %lx\n", p->p_pid, 1594 frame->tf_regs[FRAME_PC], frame->tf_regs[FRAME_A3]); 1595 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1596 printf("sendsig(%d): sig %d returns\n", 1597 p->p_pid, sig); 1598 #endif 1599 } 1600 1601 /* 1602 * System call to cleanup state after a signal 1603 * has been taken. Reset signal mask and 1604 * stack state from context left by sendsig (above). 1605 * Return to previous pc and psl as specified by 1606 * context left by sendsig. Check carefully to 1607 * make sure that the user has not modified the 1608 * psl to gain improper privileges or to cause 1609 * a machine fault. 1610 */ 1611 /* ARGSUSED */ 1612 int 1613 sys___sigreturn14(p, v, retval) 1614 struct proc *p; 1615 void *v; 1616 register_t *retval; 1617 { 1618 struct sys___sigreturn14_args /* { 1619 syscallarg(struct sigcontext *) sigcntxp; 1620 } */ *uap = v; 1621 struct sigcontext *scp, ksc; 1622 1623 /* 1624 * The trampoline code hands us the context. 1625 * It is unsafe to keep track of it ourselves, in the event that a 1626 * program jumps out of a signal handler. 1627 */ 1628 scp = SCARG(uap, sigcntxp); 1629 #ifdef DEBUG 1630 if (sigdebug & SDB_FOLLOW) 1631 printf("sigreturn: pid %d, scp %p\n", p->p_pid, scp); 1632 #endif 1633 if (ALIGN(scp) != (u_int64_t)scp) 1634 return (EINVAL); 1635 1636 if (copyin((caddr_t)scp, &ksc, sizeof(ksc)) != 0) 1637 return (EFAULT); 1638 1639 if (ksc.sc_regs[R_ZERO] != 0xACEDBADE) /* magic number */ 1640 return (EINVAL); 1641 1642 /* Restore register context. */ 1643 p->p_md.md_tf->tf_regs[FRAME_PC] = ksc.sc_pc; 1644 p->p_md.md_tf->tf_regs[FRAME_PS] = 1645 (ksc.sc_ps | ALPHA_PSL_USERSET) & ~ALPHA_PSL_USERCLR; 1646 1647 regtoframe((struct reg *)ksc.sc_regs, p->p_md.md_tf); 1648 alpha_pal_wrusp(ksc.sc_regs[R_SP]); 1649 1650 /* XXX ksc.sc_ownedfp ? */ 1651 if (p->p_addr->u_pcb.pcb_fpcpu != NULL) 1652 fpusave_proc(p, 0); 1653 bcopy((struct fpreg *)ksc.sc_fpregs, &p->p_addr->u_pcb.pcb_fp, 1654 sizeof(struct fpreg)); 1655 /* XXX ksc.sc_fp_control ? */ 1656 1657 /* Restore signal stack. */ 1658 if (ksc.sc_onstack & SS_ONSTACK) 1659 p->p_sigctx.ps_sigstk.ss_flags |= SS_ONSTACK; 1660 else 1661 p->p_sigctx.ps_sigstk.ss_flags &= ~SS_ONSTACK; 1662 1663 /* Restore signal mask. */ 1664 (void) sigprocmask1(p, SIG_SETMASK, &ksc.sc_mask, 0); 1665 1666 #ifdef DEBUG 1667 if (sigdebug & SDB_FOLLOW) 1668 printf("sigreturn(%d): returns\n", p->p_pid); 1669 #endif 1670 return (EJUSTRETURN); 1671 } 1672 1673 /* 1674 * machine dependent system variables. 1675 */ 1676 int 1677 cpu_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 1678 int *name; 1679 u_int namelen; 1680 void *oldp; 1681 size_t *oldlenp; 1682 void *newp; 1683 size_t newlen; 1684 struct proc *p; 1685 { 1686 dev_t consdev; 1687 1688 /* all sysctl names at this level are terminal */ 1689 if (namelen != 1) 1690 return (ENOTDIR); /* overloaded */ 1691 1692 switch (name[0]) { 1693 case CPU_CONSDEV: 1694 if (cn_tab != NULL) 1695 consdev = cn_tab->cn_dev; 1696 else 1697 consdev = NODEV; 1698 return (sysctl_rdstruct(oldp, oldlenp, newp, &consdev, 1699 sizeof consdev)); 1700 1701 case CPU_ROOT_DEVICE: 1702 return (sysctl_rdstring(oldp, oldlenp, newp, 1703 root_device->dv_xname)); 1704 1705 case CPU_UNALIGNED_PRINT: 1706 return (sysctl_int(oldp, oldlenp, newp, newlen, 1707 &alpha_unaligned_print)); 1708 1709 case CPU_UNALIGNED_FIX: 1710 return (sysctl_int(oldp, oldlenp, newp, newlen, 1711 &alpha_unaligned_fix)); 1712 1713 case CPU_UNALIGNED_SIGBUS: 1714 return (sysctl_int(oldp, oldlenp, newp, newlen, 1715 &alpha_unaligned_sigbus)); 1716 1717 case CPU_BOOTED_KERNEL: 1718 return (sysctl_rdstring(oldp, oldlenp, newp, 1719 bootinfo.booted_kernel)); 1720 1721 default: 1722 return (EOPNOTSUPP); 1723 } 1724 /* NOTREACHED */ 1725 } 1726 1727 /* 1728 * Set registers on exec. 1729 */ 1730 void 1731 setregs(p, pack, stack) 1732 register struct proc *p; 1733 struct exec_package *pack; 1734 u_long stack; 1735 { 1736 struct trapframe *tfp = p->p_md.md_tf; 1737 #ifdef DEBUG 1738 int i; 1739 #endif 1740 1741 #ifdef DEBUG 1742 /* 1743 * Crash and dump, if the user requested it. 1744 */ 1745 if (boothowto & RB_DUMP) 1746 panic("crash requested by boot flags"); 1747 #endif 1748 1749 #ifdef DEBUG 1750 for (i = 0; i < FRAME_SIZE; i++) 1751 tfp->tf_regs[i] = 0xbabefacedeadbeef; 1752 #else 1753 bzero(tfp->tf_regs, FRAME_SIZE * sizeof tfp->tf_regs[0]); 1754 #endif 1755 bzero(&p->p_addr->u_pcb.pcb_fp, sizeof p->p_addr->u_pcb.pcb_fp); 1756 p->p_addr->u_pcb.pcb_fp.fpr_cr = FPCR_INED 1757 | FPCR_UNFD 1758 | FPCR_UNDZ 1759 | FPCR_DYN(FP_RN) 1760 | FPCR_OVFD 1761 | FPCR_DZED 1762 | FPCR_INVD 1763 | FPCR_DNZ; 1764 alpha_pal_wrusp(stack); 1765 tfp->tf_regs[FRAME_PS] = ALPHA_PSL_USERSET; 1766 tfp->tf_regs[FRAME_PC] = pack->ep_entry & ~3; 1767 1768 tfp->tf_regs[FRAME_A0] = stack; /* a0 = sp */ 1769 tfp->tf_regs[FRAME_A1] = 0; /* a1 = rtld cleanup */ 1770 tfp->tf_regs[FRAME_A2] = 0; /* a2 = rtld object */ 1771 tfp->tf_regs[FRAME_A3] = (u_int64_t)PS_STRINGS; /* a3 = ps_strings */ 1772 tfp->tf_regs[FRAME_T12] = tfp->tf_regs[FRAME_PC]; /* a.k.a. PV */ 1773 1774 p->p_md.md_flags &= ~MDP_FPUSED; 1775 if (p->p_addr->u_pcb.pcb_fpcpu != NULL) 1776 fpusave_proc(p, 0); 1777 } 1778 1779 /* 1780 * Release the FPU. 1781 */ 1782 void 1783 fpusave_cpu(struct cpu_info *ci, int save) 1784 { 1785 struct proc *p; 1786 #if defined(MULTIPROCESSOR) 1787 int s; 1788 #endif 1789 1790 KDASSERT(ci == curcpu()); 1791 1792 p = ci->ci_fpcurproc; 1793 if (p == NULL) 1794 return; 1795 1796 if (save) { 1797 alpha_pal_wrfen(1); 1798 savefpstate(&p->p_addr->u_pcb.pcb_fp); 1799 } 1800 1801 alpha_pal_wrfen(0); 1802 1803 #if defined(MULTIPROCESSOR) 1804 s = splhigh(); 1805 #endif 1806 p->p_addr->u_pcb.pcb_fpcpu = NULL; 1807 ci->ci_fpcurproc = NULL; 1808 #if defined(MULTIPROCESSOR) 1809 splx(s); 1810 alpha_mb(); 1811 #endif 1812 } 1813 1814 /* 1815 * Synchronize FP state for this process. 1816 */ 1817 void 1818 fpusave_proc(struct proc *p, int save) 1819 { 1820 struct cpu_info *ci = curcpu(); 1821 struct cpu_info *oci; 1822 1823 KDASSERT(p->p_addr != NULL); 1824 KDASSERT(p->p_flag & P_INMEM); 1825 1826 oci = p->p_addr->u_pcb.pcb_fpcpu; 1827 if (oci == NULL) 1828 return; 1829 1830 #if defined(MULTIPROCESSOR) 1831 if (oci == ci) { 1832 int s; 1833 KASSERT(ci->ci_fpcurproc == p); 1834 s = splhigh(); 1835 fpusave_cpu(ci, save); 1836 splx(s); 1837 } else { 1838 u_long ipi = save ? ALPHA_IPI_SYNCH_FPU : 1839 ALPHA_IPI_DISCARD_FPU; 1840 1841 KASSERT(oci->ci_fpcurproc == p); 1842 do { 1843 alpha_send_ipi(oci->ci_cpuid, ipi); 1844 } while (p->p_addr->u_pcb.pcb_fpcpu != NULL); 1845 } 1846 #else 1847 KASSERT(ci->ci_fpcurproc == p); 1848 fpusave_cpu(ci, save); 1849 #endif /* MULTIPROCESSOR */ 1850 } 1851 1852 void 1853 spl0() 1854 { 1855 1856 if (ssir) { 1857 (void) alpha_pal_swpipl(ALPHA_PSL_IPL_SOFT); 1858 softintr_dispatch(); 1859 } 1860 1861 (void) alpha_pal_swpipl(ALPHA_PSL_IPL_0); 1862 } 1863 1864 /* 1865 * The following primitives manipulate the run queues. _whichqs tells which 1866 * of the 32 queues _qs have processes in them. Setrunqueue puts processes 1867 * into queues, Remrunqueue removes them from queues. The running process is 1868 * on no queue, other processes are on a queue related to p->p_priority, 1869 * divided by 4 actually to shrink the 0-127 range of priorities into the 32 1870 * available queues. 1871 */ 1872 /* 1873 * setrunqueue(p) 1874 * proc *p; 1875 * 1876 * Call should be made at splclock(), and p->p_stat should be SRUN. 1877 */ 1878 1879 void 1880 setrunqueue(p) 1881 struct proc *p; 1882 { 1883 int bit; 1884 1885 /* firewall: p->p_back must be NULL */ 1886 if (p->p_back != NULL) 1887 panic("setrunqueue"); 1888 1889 bit = p->p_priority >> 2; 1890 sched_whichqs |= (1 << bit); 1891 p->p_forw = (struct proc *)&sched_qs[bit]; 1892 p->p_back = sched_qs[bit].ph_rlink; 1893 p->p_back->p_forw = p; 1894 sched_qs[bit].ph_rlink = p; 1895 } 1896 1897 /* 1898 * remrunqueue(p) 1899 * 1900 * Call should be made at splclock(). 1901 */ 1902 void 1903 remrunqueue(p) 1904 struct proc *p; 1905 { 1906 int bit; 1907 1908 bit = p->p_priority >> 2; 1909 if ((sched_whichqs & (1 << bit)) == 0) 1910 panic("remrunqueue"); 1911 1912 p->p_back->p_forw = p->p_forw; 1913 p->p_forw->p_back = p->p_back; 1914 p->p_back = NULL; /* for firewall checking. */ 1915 1916 if ((struct proc *)&sched_qs[bit] == sched_qs[bit].ph_link) 1917 sched_whichqs &= ~(1 << bit); 1918 } 1919 1920 /* 1921 * Return the best possible estimate of the time in the timeval 1922 * to which tvp points. Unfortunately, we can't read the hardware registers. 1923 * We guarantee that the time will be greater than the value obtained by a 1924 * previous call. 1925 * 1926 * XXX PLEASE REWRITE ME TO USE THE CYCLE COUNTER AND DEAL WITH 1927 * XXX MULTIPLE CPUs IN A SANE WAY! 1928 */ 1929 void 1930 microtime(tvp) 1931 register struct timeval *tvp; 1932 { 1933 static struct timeval lasttime; 1934 static struct simplelock microtime_slock = SIMPLELOCK_INITIALIZER; 1935 int s; 1936 1937 s = splclock(); 1938 simple_lock(µtime_slock); 1939 1940 *tvp = time; 1941 #ifdef notdef 1942 tvp->tv_usec += clkread(); 1943 while (tvp->tv_usec >= 1000000) { 1944 tvp->tv_sec++; 1945 tvp->tv_usec -= 1000000; 1946 } 1947 #endif 1948 if (tvp->tv_sec == lasttime.tv_sec && 1949 tvp->tv_usec <= lasttime.tv_usec && 1950 (tvp->tv_usec = lasttime.tv_usec + 1) >= 1000000) { 1951 tvp->tv_sec++; 1952 tvp->tv_usec -= 1000000; 1953 } 1954 lasttime = *tvp; 1955 1956 simple_unlock(µtime_slock); 1957 splx(s); 1958 } 1959 1960 /* 1961 * Wait "n" microseconds. 1962 */ 1963 void 1964 delay(n) 1965 unsigned long n; 1966 { 1967 unsigned long pcc0, pcc1, curcycle, cycles, usec; 1968 1969 if (n == 0) 1970 return; 1971 1972 pcc0 = alpha_rpcc() & 0xffffffffUL; 1973 cycles = 0; 1974 usec = 0; 1975 1976 while (usec <= n) { 1977 /* 1978 * Get the next CPU cycle count- assumes that we cannot 1979 * have had more than one 32 bit overflow. 1980 */ 1981 pcc1 = alpha_rpcc() & 0xffffffffUL; 1982 if (pcc1 < pcc0) 1983 curcycle = (pcc1 + 0x100000000UL) - pcc0; 1984 else 1985 curcycle = pcc1 - pcc0; 1986 1987 /* 1988 * We now have the number of processor cycles since we 1989 * last checked. Add the current cycle count to the 1990 * running total. If it's over cycles_per_usec, increment 1991 * the usec counter. 1992 */ 1993 cycles += curcycle; 1994 while (cycles > cycles_per_usec) { 1995 usec++; 1996 cycles -= cycles_per_usec; 1997 } 1998 pcc0 = pcc1; 1999 } 2000 } 2001 2002 #if defined(COMPAT_OSF1) || 1 /* XXX */ 2003 void cpu_exec_ecoff_setregs __P((struct proc *, struct exec_package *, 2004 u_long)); 2005 #endif 2006 2007 #if 1 /* XXX */ 2008 void 2009 cpu_exec_ecoff_setregs(p, epp, stack) 2010 struct proc *p; 2011 struct exec_package *epp; 2012 u_long stack; 2013 { 2014 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2015 2016 setregs(p, epp, stack); 2017 p->p_md.md_tf->tf_regs[FRAME_GP] = execp->a.gp_value; 2018 } 2019 2020 /* 2021 * cpu_exec_ecoff_hook(): 2022 * cpu-dependent ECOFF format hook for execve(). 2023 * 2024 * Do any machine-dependent diddling of the exec package when doing ECOFF. 2025 * 2026 */ 2027 int 2028 cpu_exec_ecoff_probe(p, epp) 2029 struct proc *p; 2030 struct exec_package *epp; 2031 { 2032 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2033 int error; 2034 2035 if (execp->f.f_magic == ECOFF_MAGIC_NETBSD_ALPHA) 2036 error = 0; 2037 else 2038 error = ENOEXEC; 2039 2040 return (error); 2041 } 2042 #endif 2043 2044 int 2045 alpha_pa_access(pa) 2046 u_long pa; 2047 { 2048 int i; 2049 2050 for (i = 0; i < mem_cluster_cnt; i++) { 2051 if (pa < mem_clusters[i].start) 2052 continue; 2053 if ((pa - mem_clusters[i].start) >= 2054 (mem_clusters[i].size & ~PAGE_MASK)) 2055 continue; 2056 return (mem_clusters[i].size & PAGE_MASK); /* prot */ 2057 } 2058 2059 /* 2060 * Address is not a memory address. If we're secure, disallow 2061 * access. Otherwise, grant read/write. 2062 */ 2063 if (securelevel > 0) 2064 return (PROT_NONE); 2065 else 2066 return (PROT_READ | PROT_WRITE); 2067 } 2068 2069 /* XXX XXX BEGIN XXX XXX */ 2070 paddr_t alpha_XXX_dmamap_or; /* XXX */ 2071 /* XXX */ 2072 paddr_t /* XXX */ 2073 alpha_XXX_dmamap(v) /* XXX */ 2074 vaddr_t v; /* XXX */ 2075 { /* XXX */ 2076 /* XXX */ 2077 return (vtophys(v) | alpha_XXX_dmamap_or); /* XXX */ 2078 } /* XXX */ 2079 /* XXX XXX END XXX XXX */ 2080 2081 char * 2082 dot_conv(x) 2083 unsigned long x; 2084 { 2085 int i; 2086 char *xc; 2087 static int next; 2088 static char space[2][20]; 2089 2090 xc = space[next ^= 1] + sizeof space[0]; 2091 *--xc = '\0'; 2092 for (i = 0;; ++i) { 2093 if (i && (i & 3) == 0) 2094 *--xc = '.'; 2095 *--xc = "0123456789abcdef"[x & 0xf]; 2096 x >>= 4; 2097 if (x == 0) 2098 break; 2099 } 2100 return xc; 2101 } 2102
Indexes created Thu Oct 02 10:09:58 GMT 2025