machdep.c revision 1.274
1 /* $NetBSD: machdep.c,v 1.274 2003/10/07 17:04:18 skd 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_kgdb.h" 69 #include "opt_multiprocessor.h" 70 #include "opt_dec_3000_300.h" 71 #include "opt_dec_3000_500.h" 72 #include "opt_compat_osf1.h" 73 #include "opt_compat_netbsd.h" 74 #include "opt_execfmt.h" 75 76 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 77 78 __KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.274 2003/10/07 17:04:18 skd Exp $"); 79 80 #include <sys/param.h> 81 #include <sys/systm.h> 82 #include <sys/signalvar.h> 83 #include <sys/kernel.h> 84 #include <sys/proc.h> 85 #include <sys/ras.h> 86 #include <sys/sa.h> 87 #include <sys/savar.h> 88 #include <sys/sched.h> 89 #include <sys/buf.h> 90 #include <sys/reboot.h> 91 #include <sys/device.h> 92 #include <sys/file.h> 93 #include <sys/malloc.h> 94 #include <sys/mbuf.h> 95 #include <sys/mman.h> 96 #include <sys/msgbuf.h> 97 #include <sys/ioctl.h> 98 #include <sys/tty.h> 99 #include <sys/user.h> 100 #include <sys/exec.h> 101 #include <sys/exec_ecoff.h> 102 #include <sys/core.h> 103 #include <sys/kcore.h> 104 #include <sys/ucontext.h> 105 #include <sys/conf.h> 106 #include <sys/ksyms.h> 107 #include <machine/kcore.h> 108 #include <machine/fpu.h> 109 110 #include <sys/mount.h> 111 #include <sys/sa.h> 112 #include <sys/syscallargs.h> 113 114 #include <uvm/uvm_extern.h> 115 #include <sys/sysctl.h> 116 117 #include <dev/cons.h> 118 119 #include <machine/autoconf.h> 120 #include <machine/cpu.h> 121 #include <machine/reg.h> 122 #include <machine/rpb.h> 123 #include <machine/prom.h> 124 #include <machine/cpuconf.h> 125 #include <machine/ieeefp.h> 126 127 #ifdef DDB 128 #include <machine/db_machdep.h> 129 #include <ddb/db_access.h> 130 #include <ddb/db_sym.h> 131 #include <ddb/db_extern.h> 132 #include <ddb/db_interface.h> 133 #endif 134 135 #ifdef KGDB 136 #include <sys/kgdb.h> 137 #endif 138 139 #ifdef DEBUG 140 #include <machine/sigdebug.h> 141 #endif 142 143 #include <machine/alpha.h> 144 145 #include "ksyms.h" 146 147 struct vm_map *exec_map = NULL; 148 struct vm_map *mb_map = NULL; 149 struct vm_map *phys_map = NULL; 150 151 caddr_t msgbufaddr; 152 153 int maxmem; /* max memory per process */ 154 155 int totalphysmem; /* total amount of physical memory in system */ 156 int physmem; /* physical memory used by NetBSD + some rsvd */ 157 int resvmem; /* amount of memory reserved for PROM */ 158 int unusedmem; /* amount of memory for OS that we don't use */ 159 int unknownmem; /* amount of memory with an unknown use */ 160 161 int cputype; /* system type, from the RPB */ 162 163 int bootdev_debug = 0; /* patchable, or from DDB */ 164 165 /* 166 * XXX We need an address to which we can assign things so that they 167 * won't be optimized away because we didn't use the value. 168 */ 169 u_int32_t no_optimize; 170 171 /* the following is used externally (sysctl_hw) */ 172 char machine[] = MACHINE; /* from <machine/param.h> */ 173 char machine_arch[] = MACHINE_ARCH; /* from <machine/param.h> */ 174 char cpu_model[128]; 175 176 struct user *proc0paddr; 177 178 /* Number of machine cycles per microsecond */ 179 u_int64_t cycles_per_usec; 180 181 /* number of cpus in the box. really! */ 182 int ncpus; 183 184 struct bootinfo_kernel bootinfo; 185 186 /* For built-in TCDS */ 187 #if defined(DEC_3000_300) || defined(DEC_3000_500) 188 u_int8_t dec_3000_scsiid[2], dec_3000_scsifast[2]; 189 #endif 190 191 struct platform platform; 192 193 #if NKSYMS || defined(DDB) || defined(LKM) 194 /* start and end of kernel symbol table */ 195 void *ksym_start, *ksym_end; 196 #endif 197 198 /* for cpu_sysctl() */ 199 int alpha_unaligned_print = 1; /* warn about unaligned accesses */ 200 int alpha_unaligned_fix = 1; /* fix up unaligned accesses */ 201 int alpha_unaligned_sigbus = 0; /* don't SIGBUS on fixed-up accesses */ 202 int alpha_fp_sync_complete = 0; /* fp fixup if sync even without /s */ 203 204 /* 205 * XXX This should be dynamically sized, but we have the chicken-egg problem! 206 * XXX it should also be larger than it is, because not all of the mddt 207 * XXX clusters end up being used for VM. 208 */ 209 phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX]; /* low size bits overloaded */ 210 int mem_cluster_cnt; 211 212 int cpu_dump __P((void)); 213 int cpu_dumpsize __P((void)); 214 u_long cpu_dump_mempagecnt __P((void)); 215 void dumpsys __P((void)); 216 void identifycpu __P((void)); 217 void printregs __P((struct reg *)); 218 219 void 220 alpha_init(pfn, ptb, bim, bip, biv) 221 u_long pfn; /* first free PFN number */ 222 u_long ptb; /* PFN of current level 1 page table */ 223 u_long bim; /* bootinfo magic */ 224 u_long bip; /* bootinfo pointer */ 225 u_long biv; /* bootinfo version */ 226 { 227 extern char kernel_text[], _end[]; 228 struct mddt *mddtp; 229 struct mddt_cluster *memc; 230 int i, mddtweird; 231 struct vm_physseg *vps; 232 vaddr_t kernstart, kernend; 233 paddr_t kernstartpfn, kernendpfn, pfn0, pfn1; 234 vsize_t size; 235 cpuid_t cpu_id; 236 struct cpu_info *ci; 237 char *p; 238 caddr_t v; 239 const char *bootinfo_msg; 240 const struct cpuinit *c; 241 242 /* NO OUTPUT ALLOWED UNTIL FURTHER NOTICE */ 243 244 /* 245 * Turn off interrupts (not mchecks) and floating point. 246 * Make sure the instruction and data streams are consistent. 247 */ 248 (void)alpha_pal_swpipl(ALPHA_PSL_IPL_HIGH); 249 alpha_pal_wrfen(0); 250 ALPHA_TBIA(); 251 alpha_pal_imb(); 252 253 /* Initialize the SCB. */ 254 scb_init(); 255 256 cpu_id = cpu_number(); 257 258 #if defined(MULTIPROCESSOR) 259 /* 260 * Set our SysValue to the address of our cpu_info structure. 261 * Secondary processors do this in their spinup trampoline. 262 */ 263 alpha_pal_wrval((u_long)&cpu_info_primary); 264 cpu_info[cpu_id] = &cpu_info_primary; 265 #endif 266 267 ci = curcpu(); 268 ci->ci_cpuid = cpu_id; 269 270 /* 271 * Get critical system information (if possible, from the 272 * information provided by the boot program). 273 */ 274 bootinfo_msg = NULL; 275 if (bim == BOOTINFO_MAGIC) { 276 if (biv == 0) { /* backward compat */ 277 biv = *(u_long *)bip; 278 bip += 8; 279 } 280 switch (biv) { 281 case 1: { 282 struct bootinfo_v1 *v1p = (struct bootinfo_v1 *)bip; 283 284 bootinfo.ssym = v1p->ssym; 285 bootinfo.esym = v1p->esym; 286 /* hwrpb may not be provided by boot block in v1 */ 287 if (v1p->hwrpb != NULL) { 288 bootinfo.hwrpb_phys = 289 ((struct rpb *)v1p->hwrpb)->rpb_phys; 290 bootinfo.hwrpb_size = v1p->hwrpbsize; 291 } else { 292 bootinfo.hwrpb_phys = 293 ((struct rpb *)HWRPB_ADDR)->rpb_phys; 294 bootinfo.hwrpb_size = 295 ((struct rpb *)HWRPB_ADDR)->rpb_size; 296 } 297 memcpy(bootinfo.boot_flags, v1p->boot_flags, 298 min(sizeof v1p->boot_flags, 299 sizeof bootinfo.boot_flags)); 300 memcpy(bootinfo.booted_kernel, v1p->booted_kernel, 301 min(sizeof v1p->booted_kernel, 302 sizeof bootinfo.booted_kernel)); 303 /* booted dev not provided in bootinfo */ 304 init_prom_interface((struct rpb *) 305 ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys)); 306 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 307 sizeof bootinfo.booted_dev); 308 break; 309 } 310 default: 311 bootinfo_msg = "unknown bootinfo version"; 312 goto nobootinfo; 313 } 314 } else { 315 bootinfo_msg = "boot program did not pass bootinfo"; 316 nobootinfo: 317 bootinfo.ssym = (u_long)_end; 318 bootinfo.esym = (u_long)_end; 319 bootinfo.hwrpb_phys = ((struct rpb *)HWRPB_ADDR)->rpb_phys; 320 bootinfo.hwrpb_size = ((struct rpb *)HWRPB_ADDR)->rpb_size; 321 init_prom_interface((struct rpb *)HWRPB_ADDR); 322 prom_getenv(PROM_E_BOOTED_OSFLAGS, bootinfo.boot_flags, 323 sizeof bootinfo.boot_flags); 324 prom_getenv(PROM_E_BOOTED_FILE, bootinfo.booted_kernel, 325 sizeof bootinfo.booted_kernel); 326 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 327 sizeof bootinfo.booted_dev); 328 } 329 330 /* 331 * Initialize the kernel's mapping of the RPB. It's needed for 332 * lots of things. 333 */ 334 hwrpb = (struct rpb *)ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys); 335 336 #if defined(DEC_3000_300) || defined(DEC_3000_500) 337 if (hwrpb->rpb_type == ST_DEC_3000_300 || 338 hwrpb->rpb_type == ST_DEC_3000_500) { 339 prom_getenv(PROM_E_SCSIID, dec_3000_scsiid, 340 sizeof(dec_3000_scsiid)); 341 prom_getenv(PROM_E_SCSIFAST, dec_3000_scsifast, 342 sizeof(dec_3000_scsifast)); 343 } 344 #endif 345 346 /* 347 * Remember how many cycles there are per microsecond, 348 * so that we can use delay(). Round up, for safety. 349 */ 350 cycles_per_usec = (hwrpb->rpb_cc_freq + 999999) / 1000000; 351 352 /* 353 * Initialize the (temporary) bootstrap console interface, so 354 * we can use printf until the VM system starts being setup. 355 * The real console is initialized before then. 356 */ 357 init_bootstrap_console(); 358 359 /* OUTPUT NOW ALLOWED */ 360 361 /* delayed from above */ 362 if (bootinfo_msg) 363 printf("WARNING: %s (0x%lx, 0x%lx, 0x%lx)\n", 364 bootinfo_msg, bim, bip, biv); 365 366 /* Initialize the trap vectors on the primary processor. */ 367 trap_init(); 368 369 /* 370 * Find out this system's page size, and initialize 371 * PAGE_SIZE-dependent variables. 372 */ 373 if (hwrpb->rpb_page_size != ALPHA_PGBYTES) 374 panic("page size %lu != %d?!", hwrpb->rpb_page_size, 375 ALPHA_PGBYTES); 376 uvmexp.pagesize = hwrpb->rpb_page_size; 377 uvm_setpagesize(); 378 379 /* 380 * Find out what hardware we're on, and do basic initialization. 381 */ 382 cputype = hwrpb->rpb_type; 383 if (cputype < 0) { 384 /* 385 * At least some white-box systems have SRM which 386 * reports a systype that's the negative of their 387 * blue-box counterpart. 388 */ 389 cputype = -cputype; 390 } 391 c = platform_lookup(cputype); 392 if (c == NULL) { 393 platform_not_supported(); 394 /* NOTREACHED */ 395 } 396 (*c->init)(); 397 strcpy(cpu_model, platform.model); 398 399 /* 400 * Initialize the real console, so that the bootstrap console is 401 * no longer necessary. 402 */ 403 (*platform.cons_init)(); 404 405 #ifdef DIAGNOSTIC 406 /* Paranoid sanity checking */ 407 408 /* We should always be running on the primary. */ 409 assert(hwrpb->rpb_primary_cpu_id == cpu_id); 410 411 /* 412 * On single-CPU systypes, the primary should always be CPU 0, 413 * except on Alpha 8200 systems where the CPU id is related 414 * to the VID, which is related to the Turbo Laser node id. 415 */ 416 if (cputype != ST_DEC_21000) 417 assert(hwrpb->rpb_primary_cpu_id == 0); 418 #endif 419 420 /* NO MORE FIRMWARE ACCESS ALLOWED */ 421 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 422 /* 423 * XXX (unless _PMAP_MAY_USE_PROM_CONSOLE is defined and 424 * XXX pmap_uses_prom_console() evaluates to non-zero.) 425 */ 426 #endif 427 428 /* 429 * Find the beginning and end of the kernel (and leave a 430 * bit of space before the beginning for the bootstrap 431 * stack). 432 */ 433 kernstart = trunc_page((vaddr_t)kernel_text) - 2 * PAGE_SIZE; 434 #if NKSYMS || defined(DDB) || defined(LKM) 435 ksym_start = (void *)bootinfo.ssym; 436 ksym_end = (void *)bootinfo.esym; 437 kernend = (vaddr_t)round_page((vaddr_t)ksym_end); 438 #else 439 kernend = (vaddr_t)round_page((vaddr_t)_end); 440 #endif 441 442 kernstartpfn = atop(ALPHA_K0SEG_TO_PHYS(kernstart)); 443 kernendpfn = atop(ALPHA_K0SEG_TO_PHYS(kernend)); 444 445 /* 446 * Find out how much memory is available, by looking at 447 * the memory cluster descriptors. This also tries to do 448 * its best to detect things things that have never been seen 449 * before... 450 */ 451 mddtp = (struct mddt *)(((caddr_t)hwrpb) + hwrpb->rpb_memdat_off); 452 453 /* MDDT SANITY CHECKING */ 454 mddtweird = 0; 455 if (mddtp->mddt_cluster_cnt < 2) { 456 mddtweird = 1; 457 printf("WARNING: weird number of mem clusters: %lu\n", 458 mddtp->mddt_cluster_cnt); 459 } 460 461 #if 0 462 printf("Memory cluster count: %d\n", mddtp->mddt_cluster_cnt); 463 #endif 464 465 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 466 memc = &mddtp->mddt_clusters[i]; 467 #if 0 468 printf("MEMC %d: pfn 0x%lx cnt 0x%lx usage 0x%lx\n", i, 469 memc->mddt_pfn, memc->mddt_pg_cnt, memc->mddt_usage); 470 #endif 471 totalphysmem += memc->mddt_pg_cnt; 472 if (mem_cluster_cnt < VM_PHYSSEG_MAX) { /* XXX */ 473 mem_clusters[mem_cluster_cnt].start = 474 ptoa(memc->mddt_pfn); 475 mem_clusters[mem_cluster_cnt].size = 476 ptoa(memc->mddt_pg_cnt); 477 if (memc->mddt_usage & MDDT_mbz || 478 memc->mddt_usage & MDDT_NONVOLATILE || /* XXX */ 479 memc->mddt_usage & MDDT_PALCODE) 480 mem_clusters[mem_cluster_cnt].size |= 481 PROT_READ; 482 else 483 mem_clusters[mem_cluster_cnt].size |= 484 PROT_READ | PROT_WRITE | PROT_EXEC; 485 mem_cluster_cnt++; 486 } 487 488 if (memc->mddt_usage & MDDT_mbz) { 489 mddtweird = 1; 490 printf("WARNING: mem cluster %d has weird " 491 "usage 0x%lx\n", i, memc->mddt_usage); 492 unknownmem += memc->mddt_pg_cnt; 493 continue; 494 } 495 if (memc->mddt_usage & MDDT_NONVOLATILE) { 496 /* XXX should handle these... */ 497 printf("WARNING: skipping non-volatile mem " 498 "cluster %d\n", i); 499 unusedmem += memc->mddt_pg_cnt; 500 continue; 501 } 502 if (memc->mddt_usage & MDDT_PALCODE) { 503 resvmem += memc->mddt_pg_cnt; 504 continue; 505 } 506 507 /* 508 * We have a memory cluster available for system 509 * software use. We must determine if this cluster 510 * holds the kernel. 511 */ 512 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 513 /* 514 * XXX If the kernel uses the PROM console, we only use the 515 * XXX memory after the kernel in the first system segment, 516 * XXX to avoid clobbering prom mapping, data, etc. 517 */ 518 if (!pmap_uses_prom_console() || physmem == 0) { 519 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 520 physmem += memc->mddt_pg_cnt; 521 pfn0 = memc->mddt_pfn; 522 pfn1 = memc->mddt_pfn + memc->mddt_pg_cnt; 523 if (pfn0 <= kernstartpfn && kernendpfn <= pfn1) { 524 /* 525 * Must compute the location of the kernel 526 * within the segment. 527 */ 528 #if 0 529 printf("Cluster %d contains kernel\n", i); 530 #endif 531 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 532 if (!pmap_uses_prom_console()) { 533 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 534 if (pfn0 < kernstartpfn) { 535 /* 536 * There is a chunk before the kernel. 537 */ 538 #if 0 539 printf("Loading chunk before kernel: " 540 "0x%lx / 0x%lx\n", pfn0, kernstartpfn); 541 #endif 542 uvm_page_physload(pfn0, kernstartpfn, 543 pfn0, kernstartpfn, VM_FREELIST_DEFAULT); 544 } 545 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 546 } 547 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 548 if (kernendpfn < pfn1) { 549 /* 550 * There is a chunk after the kernel. 551 */ 552 #if 0 553 printf("Loading chunk after kernel: " 554 "0x%lx / 0x%lx\n", kernendpfn, pfn1); 555 #endif 556 uvm_page_physload(kernendpfn, pfn1, 557 kernendpfn, pfn1, VM_FREELIST_DEFAULT); 558 } 559 } else { 560 /* 561 * Just load this cluster as one chunk. 562 */ 563 #if 0 564 printf("Loading cluster %d: 0x%lx / 0x%lx\n", i, 565 pfn0, pfn1); 566 #endif 567 uvm_page_physload(pfn0, pfn1, pfn0, pfn1, 568 VM_FREELIST_DEFAULT); 569 } 570 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 571 } 572 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 573 } 574 575 /* 576 * Dump out the MDDT if it looks odd... 577 */ 578 if (mddtweird) { 579 printf("\n"); 580 printf("complete memory cluster information:\n"); 581 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 582 printf("mddt %d:\n", i); 583 printf("\tpfn %lx\n", 584 mddtp->mddt_clusters[i].mddt_pfn); 585 printf("\tcnt %lx\n", 586 mddtp->mddt_clusters[i].mddt_pg_cnt); 587 printf("\ttest %lx\n", 588 mddtp->mddt_clusters[i].mddt_pg_test); 589 printf("\tbva %lx\n", 590 mddtp->mddt_clusters[i].mddt_v_bitaddr); 591 printf("\tbpa %lx\n", 592 mddtp->mddt_clusters[i].mddt_p_bitaddr); 593 printf("\tbcksum %lx\n", 594 mddtp->mddt_clusters[i].mddt_bit_cksum); 595 printf("\tusage %lx\n", 596 mddtp->mddt_clusters[i].mddt_usage); 597 } 598 printf("\n"); 599 } 600 601 if (totalphysmem == 0) 602 panic("can't happen: system seems to have no memory!"); 603 maxmem = physmem; 604 #if 0 605 printf("totalphysmem = %d\n", totalphysmem); 606 printf("physmem = %d\n", physmem); 607 printf("resvmem = %d\n", resvmem); 608 printf("unusedmem = %d\n", unusedmem); 609 printf("unknownmem = %d\n", unknownmem); 610 #endif 611 612 /* 613 * Initialize error message buffer (at end of core). 614 */ 615 { 616 vsize_t sz = (vsize_t)round_page(MSGBUFSIZE); 617 vsize_t reqsz = sz; 618 619 vps = &vm_physmem[vm_nphysseg - 1]; 620 621 /* shrink so that it'll fit in the last segment */ 622 if ((vps->avail_end - vps->avail_start) < atop(sz)) 623 sz = ptoa(vps->avail_end - vps->avail_start); 624 625 vps->end -= atop(sz); 626 vps->avail_end -= atop(sz); 627 msgbufaddr = (caddr_t) ALPHA_PHYS_TO_K0SEG(ptoa(vps->end)); 628 initmsgbuf(msgbufaddr, sz); 629 630 /* Remove the last segment if it now has no pages. */ 631 if (vps->start == vps->end) 632 vm_nphysseg--; 633 634 /* warn if the message buffer had to be shrunk */ 635 if (sz != reqsz) 636 printf("WARNING: %ld bytes not available for msgbuf " 637 "in last cluster (%ld used)\n", reqsz, sz); 638 639 } 640 641 /* 642 * NOTE: It is safe to use uvm_pageboot_alloc() before 643 * pmap_bootstrap() because our pmap_virtual_space() 644 * returns compile-time constants. 645 */ 646 647 /* 648 * Init mapping for u page(s) for proc 0 649 */ 650 lwp0.l_addr = proc0paddr = 651 (struct user *)uvm_pageboot_alloc(UPAGES * PAGE_SIZE); 652 653 /* 654 * Allocate space for system data structures. These data structures 655 * are allocated here instead of cpu_startup() because physical 656 * memory is directly addressable. We don't have to map these into 657 * virtual address space. 658 */ 659 size = (vsize_t)allocsys(NULL, NULL); 660 v = (caddr_t)uvm_pageboot_alloc(size); 661 if ((allocsys(v, NULL) - v) != size) 662 panic("alpha_init: table size inconsistency"); 663 664 /* 665 * Initialize the virtual memory system, and set the 666 * page table base register in proc 0's PCB. 667 */ 668 pmap_bootstrap(ALPHA_PHYS_TO_K0SEG(ptb << PGSHIFT), 669 hwrpb->rpb_max_asn, hwrpb->rpb_pcs_cnt); 670 671 /* 672 * Initialize the rest of proc 0's PCB, and cache its physical 673 * address. 674 */ 675 lwp0.l_md.md_pcbpaddr = 676 (struct pcb *)ALPHA_K0SEG_TO_PHYS((vaddr_t)&proc0paddr->u_pcb); 677 678 /* 679 * Set the kernel sp, reserving space for an (empty) trapframe, 680 * and make proc0's trapframe pointer point to it for sanity. 681 */ 682 proc0paddr->u_pcb.pcb_hw.apcb_ksp = 683 (u_int64_t)proc0paddr + USPACE - sizeof(struct trapframe); 684 lwp0.l_md.md_tf = 685 (struct trapframe *)proc0paddr->u_pcb.pcb_hw.apcb_ksp; 686 simple_lock_init(&proc0paddr->u_pcb.pcb_fpcpu_slock); 687 688 /* 689 * Initialize the primary CPU's idle PCB to proc0's. In a 690 * MULTIPROCESSOR configuration, each CPU will later get 691 * its own idle PCB when autoconfiguration runs. 692 */ 693 ci->ci_idle_pcb = &proc0paddr->u_pcb; 694 ci->ci_idle_pcb_paddr = (u_long)lwp0.l_md.md_pcbpaddr; 695 696 /* Indicate that proc0 has a CPU. */ 697 lwp0.l_cpu = ci; 698 699 /* 700 * Look at arguments passed to us and compute boothowto. 701 */ 702 703 boothowto = RB_SINGLE; 704 #ifdef KADB 705 boothowto |= RB_KDB; 706 #endif 707 for (p = bootinfo.boot_flags; p && *p != '\0'; p++) { 708 /* 709 * Note that we'd really like to differentiate case here, 710 * but the Alpha AXP Architecture Reference Manual 711 * says that we shouldn't. 712 */ 713 switch (*p) { 714 case 'a': /* autoboot */ 715 case 'A': 716 boothowto &= ~RB_SINGLE; 717 break; 718 719 #ifdef DEBUG 720 case 'c': /* crash dump immediately after autoconfig */ 721 case 'C': 722 boothowto |= RB_DUMP; 723 break; 724 #endif 725 726 #if defined(KGDB) || defined(DDB) 727 case 'd': /* break into the kernel debugger ASAP */ 728 case 'D': 729 boothowto |= RB_KDB; 730 break; 731 #endif 732 733 case 'h': /* always halt, never reboot */ 734 case 'H': 735 boothowto |= RB_HALT; 736 break; 737 738 #if 0 739 case 'm': /* mini root present in memory */ 740 case 'M': 741 boothowto |= RB_MINIROOT; 742 break; 743 #endif 744 745 case 'n': /* askname */ 746 case 'N': 747 boothowto |= RB_ASKNAME; 748 break; 749 750 case 's': /* single-user (default, supported for sanity) */ 751 case 'S': 752 boothowto |= RB_SINGLE; 753 break; 754 755 case 'q': /* quiet boot */ 756 case 'Q': 757 boothowto |= AB_QUIET; 758 break; 759 760 case 'v': /* verbose boot */ 761 case 'V': 762 boothowto |= AB_VERBOSE; 763 break; 764 765 case '-': 766 /* 767 * Just ignore this. It's not required, but it's 768 * common for it to be passed regardless. 769 */ 770 break; 771 772 default: 773 printf("Unrecognized boot flag '%c'.\n", *p); 774 break; 775 } 776 } 777 778 779 /* 780 * Figure out the number of cpus in the box, from RPB fields. 781 * Really. We mean it. 782 */ 783 for (i = 0; i < hwrpb->rpb_pcs_cnt; i++) { 784 struct pcs *pcsp; 785 786 pcsp = LOCATE_PCS(hwrpb, i); 787 if ((pcsp->pcs_flags & PCS_PP) != 0) 788 ncpus++; 789 } 790 791 /* 792 * Initialize debuggers, and break into them if appropriate. 793 */ 794 #if NKSYMS || defined(DDB) || defined(LKM) 795 ksyms_init((int)((u_int64_t)ksym_end - (u_int64_t)ksym_start), 796 ksym_start, ksym_end); 797 #endif 798 799 if (boothowto & RB_KDB) { 800 #if defined(KGDB) 801 kgdb_debug_init = 1; 802 kgdb_connect(1); 803 #elif defined(DDB) 804 Debugger(); 805 #endif 806 } 807 808 /* 809 * Figure out our clock frequency, from RPB fields. 810 */ 811 hz = hwrpb->rpb_intr_freq >> 12; 812 if (!(60 <= hz && hz <= 10240)) { 813 hz = 1024; 814 #ifdef DIAGNOSTIC 815 printf("WARNING: unbelievable rpb_intr_freq: %ld (%d hz)\n", 816 hwrpb->rpb_intr_freq, hz); 817 #endif 818 } 819 } 820 821 void 822 consinit() 823 { 824 825 /* 826 * Everything related to console initialization is done 827 * in alpha_init(). 828 */ 829 #if defined(DIAGNOSTIC) && defined(_PMAP_MAY_USE_PROM_CONSOLE) 830 printf("consinit: %susing prom console\n", 831 pmap_uses_prom_console() ? "" : "not "); 832 #endif 833 } 834 835 #include "pckbc.h" 836 #include "pckbd.h" 837 #if (NPCKBC > 0) && (NPCKBD == 0) 838 839 #include <dev/ic/pckbcvar.h> 840 841 /* 842 * This is called by the pbkbc driver if no pckbd is configured. 843 * On the i386, it is used to glue in the old, deprecated console 844 * code. On the Alpha, it does nothing. 845 */ 846 int 847 pckbc_machdep_cnattach(kbctag, kbcslot) 848 pckbc_tag_t kbctag; 849 pckbc_slot_t kbcslot; 850 { 851 852 return (ENXIO); 853 } 854 #endif /* NPCKBC > 0 && NPCKBD == 0 */ 855 856 void 857 cpu_startup() 858 { 859 u_int i, base, residual; 860 vaddr_t minaddr, maxaddr; 861 vsize_t size; 862 char pbuf[9]; 863 #if defined(DEBUG) 864 extern int pmapdebug; 865 int opmapdebug = pmapdebug; 866 867 pmapdebug = 0; 868 #endif 869 870 /* 871 * Good {morning,afternoon,evening,night}. 872 */ 873 printf(version); 874 identifycpu(); 875 format_bytes(pbuf, sizeof(pbuf), ptoa(totalphysmem)); 876 printf("total memory = %s\n", pbuf); 877 format_bytes(pbuf, sizeof(pbuf), ptoa(resvmem)); 878 printf("(%s reserved for PROM, ", pbuf); 879 format_bytes(pbuf, sizeof(pbuf), ptoa(physmem)); 880 printf("%s used by NetBSD)\n", pbuf); 881 if (unusedmem) { 882 format_bytes(pbuf, sizeof(pbuf), ptoa(unusedmem)); 883 printf("WARNING: unused memory = %s\n", pbuf); 884 } 885 if (unknownmem) { 886 format_bytes(pbuf, sizeof(pbuf), ptoa(unknownmem)); 887 printf("WARNING: %s of memory with unknown purpose\n", pbuf); 888 } 889 890 /* 891 * Allocate virtual address space for file I/O buffers. 892 * Note they are different than the array of headers, 'buf', 893 * and usually occupy more virtual memory than physical. 894 */ 895 size = MAXBSIZE * nbuf; 896 if (uvm_map(kernel_map, (void *) &buffers, round_page(size), 897 NULL, UVM_UNKNOWN_OFFSET, 0, 898 UVM_MAPFLAG(UVM_PROT_NONE, UVM_PROT_NONE, UVM_INH_NONE, 899 UVM_ADV_NORMAL, 0)) != 0) 900 panic("startup: cannot allocate VM for buffers"); 901 base = bufpages / nbuf; 902 residual = bufpages % nbuf; 903 for (i = 0; i < nbuf; i++) { 904 vsize_t curbufsize; 905 vaddr_t curbuf; 906 struct vm_page *pg; 907 908 /* 909 * Each buffer has MAXBSIZE bytes of VM space allocated. Of 910 * that MAXBSIZE space, we allocate and map (base+1) pages 911 * for the first "residual" buffers, and then we allocate 912 * "base" pages for the rest. 913 */ 914 curbuf = (vaddr_t) buffers + (i * MAXBSIZE); 915 curbufsize = PAGE_SIZE * ((i < residual) ? (base+1) : base); 916 917 while (curbufsize) { 918 pg = uvm_pagealloc(NULL, 0, NULL, 0); 919 if (pg == NULL) 920 panic("cpu_startup: not enough memory for " 921 "buffer cache"); 922 pmap_kenter_pa(curbuf, VM_PAGE_TO_PHYS(pg), 923 VM_PROT_READ|VM_PROT_WRITE); 924 curbuf += PAGE_SIZE; 925 curbufsize -= PAGE_SIZE; 926 } 927 } 928 pmap_update(pmap_kernel()); 929 930 /* 931 * Allocate a submap for exec arguments. This map effectively 932 * limits the number of processes exec'ing at any time. 933 */ 934 exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 935 16 * NCARGS, VM_MAP_PAGEABLE, FALSE, NULL); 936 937 /* 938 * Allocate a submap for physio 939 */ 940 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 941 VM_PHYS_SIZE, 0, FALSE, NULL); 942 943 /* 944 * No need to allocate an mbuf cluster submap. Mbuf clusters 945 * are allocated via the pool allocator, and we use K0SEG to 946 * map those pages. 947 */ 948 949 #if defined(DEBUG) 950 pmapdebug = opmapdebug; 951 #endif 952 format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 953 printf("avail memory = %s\n", pbuf); 954 #if 0 955 { 956 extern u_long pmap_pages_stolen; 957 958 format_bytes(pbuf, sizeof(pbuf), pmap_pages_stolen * PAGE_SIZE); 959 printf("stolen memory for VM structures = %s\n", pbuf); 960 } 961 #endif 962 format_bytes(pbuf, sizeof(pbuf), bufpages * PAGE_SIZE); 963 printf("using %u buffers containing %s of memory\n", nbuf, pbuf); 964 965 /* 966 * Set up buffers, so they can be used to read disk labels. 967 */ 968 bufinit(); 969 970 /* 971 * Set up the HWPCB so that it's safe to configure secondary 972 * CPUs. 973 */ 974 hwrpb_primary_init(); 975 } 976 977 /* 978 * Retrieve the platform name from the DSR. 979 */ 980 const char * 981 alpha_dsr_sysname() 982 { 983 struct dsrdb *dsr; 984 const char *sysname; 985 986 /* 987 * DSR does not exist on early HWRPB versions. 988 */ 989 if (hwrpb->rpb_version < HWRPB_DSRDB_MINVERS) 990 return (NULL); 991 992 dsr = (struct dsrdb *)(((caddr_t)hwrpb) + hwrpb->rpb_dsrdb_off); 993 sysname = (const char *)((caddr_t)dsr + (dsr->dsr_sysname_off + 994 sizeof(u_int64_t))); 995 return (sysname); 996 } 997 998 /* 999 * Lookup the system specified system variation in the provided table, 1000 * returning the model string on match. 1001 */ 1002 const char * 1003 alpha_variation_name(variation, avtp) 1004 u_int64_t variation; 1005 const struct alpha_variation_table *avtp; 1006 { 1007 int i; 1008 1009 for (i = 0; avtp[i].avt_model != NULL; i++) 1010 if (avtp[i].avt_variation == variation) 1011 return (avtp[i].avt_model); 1012 return (NULL); 1013 } 1014 1015 /* 1016 * Generate a default platform name based for unknown system variations. 1017 */ 1018 const char * 1019 alpha_unknown_sysname() 1020 { 1021 static char s[128]; /* safe size */ 1022 1023 sprintf(s, "%s family, unknown model variation 0x%lx", 1024 platform.family, hwrpb->rpb_variation & SV_ST_MASK); 1025 return ((const char *)s); 1026 } 1027 1028 void 1029 identifycpu() 1030 { 1031 char *s; 1032 int i; 1033 1034 /* 1035 * print out CPU identification information. 1036 */ 1037 printf("%s", cpu_model); 1038 for(s = cpu_model; *s; ++s) 1039 if(strncasecmp(s, "MHz", 3) == 0) 1040 goto skipMHz; 1041 printf(", %ldMHz", hwrpb->rpb_cc_freq / 1000000); 1042 skipMHz: 1043 printf(", s/n "); 1044 for (i = 0; i < 10; i++) 1045 printf("%c", hwrpb->rpb_ssn[i]); 1046 printf("\n"); 1047 printf("%ld byte page size, %d processor%s.\n", 1048 hwrpb->rpb_page_size, ncpus, ncpus == 1 ? "" : "s"); 1049 #if 0 1050 /* this isn't defined for any systems that we run on? */ 1051 printf("serial number 0x%lx 0x%lx\n", 1052 ((long *)hwrpb->rpb_ssn)[0], ((long *)hwrpb->rpb_ssn)[1]); 1053 1054 /* and these aren't particularly useful! */ 1055 printf("variation: 0x%lx, revision 0x%lx\n", 1056 hwrpb->rpb_variation, *(long *)hwrpb->rpb_revision); 1057 #endif 1058 } 1059 1060 int waittime = -1; 1061 struct pcb dumppcb; 1062 1063 void 1064 cpu_reboot(howto, bootstr) 1065 int howto; 1066 char *bootstr; 1067 { 1068 #if defined(MULTIPROCESSOR) 1069 u_long cpu_id = cpu_number(); 1070 u_long wait_mask = (1UL << cpu_id) | 1071 (1UL << hwrpb->rpb_primary_cpu_id); 1072 int i; 1073 #endif 1074 1075 /* If "always halt" was specified as a boot flag, obey. */ 1076 if ((boothowto & RB_HALT) != 0) 1077 howto |= RB_HALT; 1078 1079 boothowto = howto; 1080 1081 /* If system is cold, just halt. */ 1082 if (cold) { 1083 boothowto |= RB_HALT; 1084 goto haltsys; 1085 } 1086 1087 if ((boothowto & RB_NOSYNC) == 0 && waittime < 0) { 1088 waittime = 0; 1089 vfs_shutdown(); 1090 /* 1091 * If we've been adjusting the clock, the todr 1092 * will be out of synch; adjust it now. 1093 */ 1094 resettodr(); 1095 } 1096 1097 /* Disable interrupts. */ 1098 splhigh(); 1099 1100 #if defined(MULTIPROCESSOR) 1101 /* 1102 * Halt all other CPUs. If we're not the primary, the 1103 * primary will spin, waiting for us to halt. 1104 */ 1105 alpha_broadcast_ipi(ALPHA_IPI_HALT); 1106 1107 for (i = 0; i < 10000; i++) { 1108 alpha_mb(); 1109 if (cpus_running == wait_mask) 1110 break; 1111 delay(1000); 1112 } 1113 alpha_mb(); 1114 if (cpus_running != wait_mask) 1115 printf("WARNING: Unable to halt secondary CPUs (0x%lx)\n", 1116 cpus_running); 1117 #endif /* MULTIPROCESSOR */ 1118 1119 /* If rebooting and a dump is requested do it. */ 1120 #if 0 1121 if ((boothowto & (RB_DUMP | RB_HALT)) == RB_DUMP) 1122 #else 1123 if (boothowto & RB_DUMP) 1124 #endif 1125 dumpsys(); 1126 1127 haltsys: 1128 1129 /* run any shutdown hooks */ 1130 doshutdownhooks(); 1131 1132 #ifdef BOOTKEY 1133 printf("hit any key to %s...\n", howto & RB_HALT ? "halt" : "reboot"); 1134 cnpollc(1); /* for proper keyboard command handling */ 1135 cngetc(); 1136 cnpollc(0); 1137 printf("\n"); 1138 #endif 1139 1140 /* Finally, powerdown/halt/reboot the system. */ 1141 if ((boothowto & RB_POWERDOWN) == RB_POWERDOWN && 1142 platform.powerdown != NULL) { 1143 (*platform.powerdown)(); 1144 printf("WARNING: powerdown failed!\n"); 1145 } 1146 printf("%s\n\n", (boothowto & RB_HALT) ? "halted." : "rebooting..."); 1147 #if defined(MULTIPROCESSOR) 1148 if (cpu_id != hwrpb->rpb_primary_cpu_id) 1149 cpu_halt(); 1150 else 1151 #endif 1152 prom_halt(boothowto & RB_HALT); 1153 /*NOTREACHED*/ 1154 } 1155 1156 /* 1157 * These variables are needed by /sbin/savecore 1158 */ 1159 u_int32_t dumpmag = 0x8fca0101; /* magic number */ 1160 int dumpsize = 0; /* pages */ 1161 long dumplo = 0; /* blocks */ 1162 1163 /* 1164 * cpu_dumpsize: calculate size of machine-dependent kernel core dump headers. 1165 */ 1166 int 1167 cpu_dumpsize() 1168 { 1169 int size; 1170 1171 size = ALIGN(sizeof(kcore_seg_t)) + ALIGN(sizeof(cpu_kcore_hdr_t)) + 1172 ALIGN(mem_cluster_cnt * sizeof(phys_ram_seg_t)); 1173 if (roundup(size, dbtob(1)) != dbtob(1)) 1174 return -1; 1175 1176 return (1); 1177 } 1178 1179 /* 1180 * cpu_dump_mempagecnt: calculate size of RAM (in pages) to be dumped. 1181 */ 1182 u_long 1183 cpu_dump_mempagecnt() 1184 { 1185 u_long i, n; 1186 1187 n = 0; 1188 for (i = 0; i < mem_cluster_cnt; i++) 1189 n += atop(mem_clusters[i].size); 1190 return (n); 1191 } 1192 1193 /* 1194 * cpu_dump: dump machine-dependent kernel core dump headers. 1195 */ 1196 int 1197 cpu_dump() 1198 { 1199 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1200 char buf[dbtob(1)]; 1201 kcore_seg_t *segp; 1202 cpu_kcore_hdr_t *cpuhdrp; 1203 phys_ram_seg_t *memsegp; 1204 const struct bdevsw *bdev; 1205 int i; 1206 1207 bdev = bdevsw_lookup(dumpdev); 1208 if (bdev == NULL) 1209 return (ENXIO); 1210 dump = bdev->d_dump; 1211 1212 memset(buf, 0, sizeof buf); 1213 segp = (kcore_seg_t *)buf; 1214 cpuhdrp = (cpu_kcore_hdr_t *)&buf[ALIGN(sizeof(*segp))]; 1215 memsegp = (phys_ram_seg_t *)&buf[ ALIGN(sizeof(*segp)) + 1216 ALIGN(sizeof(*cpuhdrp))]; 1217 1218 /* 1219 * Generate a segment header. 1220 */ 1221 CORE_SETMAGIC(*segp, KCORE_MAGIC, MID_MACHINE, CORE_CPU); 1222 segp->c_size = dbtob(1) - ALIGN(sizeof(*segp)); 1223 1224 /* 1225 * Add the machine-dependent header info. 1226 */ 1227 cpuhdrp->lev1map_pa = ALPHA_K0SEG_TO_PHYS((vaddr_t)kernel_lev1map); 1228 cpuhdrp->page_size = PAGE_SIZE; 1229 cpuhdrp->nmemsegs = mem_cluster_cnt; 1230 1231 /* 1232 * Fill in the memory segment descriptors. 1233 */ 1234 for (i = 0; i < mem_cluster_cnt; i++) { 1235 memsegp[i].start = mem_clusters[i].start; 1236 memsegp[i].size = mem_clusters[i].size & ~PAGE_MASK; 1237 } 1238 1239 return (dump(dumpdev, dumplo, (caddr_t)buf, dbtob(1))); 1240 } 1241 1242 /* 1243 * This is called by main to set dumplo and dumpsize. 1244 * Dumps always skip the first PAGE_SIZE of disk space 1245 * in case there might be a disk label stored there. 1246 * If there is extra space, put dump at the end to 1247 * reduce the chance that swapping trashes it. 1248 */ 1249 void 1250 cpu_dumpconf() 1251 { 1252 const struct bdevsw *bdev; 1253 int nblks, dumpblks; /* size of dump area */ 1254 1255 if (dumpdev == NODEV) 1256 goto bad; 1257 bdev = bdevsw_lookup(dumpdev); 1258 if (bdev == NULL) 1259 panic("dumpconf: bad dumpdev=0x%x", dumpdev); 1260 if (bdev->d_psize == NULL) 1261 goto bad; 1262 nblks = (*bdev->d_psize)(dumpdev); 1263 if (nblks <= ctod(1)) 1264 goto bad; 1265 1266 dumpblks = cpu_dumpsize(); 1267 if (dumpblks < 0) 1268 goto bad; 1269 dumpblks += ctod(cpu_dump_mempagecnt()); 1270 1271 /* If dump won't fit (incl. room for possible label), punt. */ 1272 if (dumpblks > (nblks - ctod(1))) 1273 goto bad; 1274 1275 /* Put dump at end of partition */ 1276 dumplo = nblks - dumpblks; 1277 1278 /* dumpsize is in page units, and doesn't include headers. */ 1279 dumpsize = cpu_dump_mempagecnt(); 1280 return; 1281 1282 bad: 1283 dumpsize = 0; 1284 return; 1285 } 1286 1287 /* 1288 * Dump the kernel's image to the swap partition. 1289 */ 1290 #define BYTES_PER_DUMP PAGE_SIZE 1291 1292 void 1293 dumpsys() 1294 { 1295 const struct bdevsw *bdev; 1296 u_long totalbytesleft, bytes, i, n, memcl; 1297 u_long maddr; 1298 int psize; 1299 daddr_t blkno; 1300 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1301 int error; 1302 1303 /* Save registers. */ 1304 savectx(&dumppcb); 1305 1306 if (dumpdev == NODEV) 1307 return; 1308 bdev = bdevsw_lookup(dumpdev); 1309 if (bdev == NULL || bdev->d_psize == NULL) 1310 return; 1311 1312 /* 1313 * For dumps during autoconfiguration, 1314 * if dump device has already configured... 1315 */ 1316 if (dumpsize == 0) 1317 cpu_dumpconf(); 1318 if (dumplo <= 0) { 1319 printf("\ndump to dev %u,%u not possible\n", major(dumpdev), 1320 minor(dumpdev)); 1321 return; 1322 } 1323 printf("\ndumping to dev %u,%u offset %ld\n", major(dumpdev), 1324 minor(dumpdev), dumplo); 1325 1326 psize = (*bdev->d_psize)(dumpdev); 1327 printf("dump "); 1328 if (psize == -1) { 1329 printf("area unavailable\n"); 1330 return; 1331 } 1332 1333 /* XXX should purge all outstanding keystrokes. */ 1334 1335 if ((error = cpu_dump()) != 0) 1336 goto err; 1337 1338 totalbytesleft = ptoa(cpu_dump_mempagecnt()); 1339 blkno = dumplo + cpu_dumpsize(); 1340 dump = bdev->d_dump; 1341 error = 0; 1342 1343 for (memcl = 0; memcl < mem_cluster_cnt; memcl++) { 1344 maddr = mem_clusters[memcl].start; 1345 bytes = mem_clusters[memcl].size & ~PAGE_MASK; 1346 1347 for (i = 0; i < bytes; i += n, totalbytesleft -= n) { 1348 1349 /* Print out how many MBs we to go. */ 1350 if ((totalbytesleft % (1024*1024)) == 0) 1351 printf("%ld ", totalbytesleft / (1024 * 1024)); 1352 1353 /* Limit size for next transfer. */ 1354 n = bytes - i; 1355 if (n > BYTES_PER_DUMP) 1356 n = BYTES_PER_DUMP; 1357 1358 error = (*dump)(dumpdev, blkno, 1359 (caddr_t)ALPHA_PHYS_TO_K0SEG(maddr), n); 1360 if (error) 1361 goto err; 1362 maddr += n; 1363 blkno += btodb(n); /* XXX? */ 1364 1365 /* XXX should look for keystrokes, to cancel. */ 1366 } 1367 } 1368 1369 err: 1370 switch (error) { 1371 1372 case ENXIO: 1373 printf("device bad\n"); 1374 break; 1375 1376 case EFAULT: 1377 printf("device not ready\n"); 1378 break; 1379 1380 case EINVAL: 1381 printf("area improper\n"); 1382 break; 1383 1384 case EIO: 1385 printf("i/o error\n"); 1386 break; 1387 1388 case EINTR: 1389 printf("aborted from console\n"); 1390 break; 1391 1392 case 0: 1393 printf("succeeded\n"); 1394 break; 1395 1396 default: 1397 printf("error %d\n", error); 1398 break; 1399 } 1400 printf("\n\n"); 1401 delay(1000); 1402 } 1403 1404 void 1405 frametoreg(framep, regp) 1406 const struct trapframe *framep; 1407 struct reg *regp; 1408 { 1409 1410 regp->r_regs[R_V0] = framep->tf_regs[FRAME_V0]; 1411 regp->r_regs[R_T0] = framep->tf_regs[FRAME_T0]; 1412 regp->r_regs[R_T1] = framep->tf_regs[FRAME_T1]; 1413 regp->r_regs[R_T2] = framep->tf_regs[FRAME_T2]; 1414 regp->r_regs[R_T3] = framep->tf_regs[FRAME_T3]; 1415 regp->r_regs[R_T4] = framep->tf_regs[FRAME_T4]; 1416 regp->r_regs[R_T5] = framep->tf_regs[FRAME_T5]; 1417 regp->r_regs[R_T6] = framep->tf_regs[FRAME_T6]; 1418 regp->r_regs[R_T7] = framep->tf_regs[FRAME_T7]; 1419 regp->r_regs[R_S0] = framep->tf_regs[FRAME_S0]; 1420 regp->r_regs[R_S1] = framep->tf_regs[FRAME_S1]; 1421 regp->r_regs[R_S2] = framep->tf_regs[FRAME_S2]; 1422 regp->r_regs[R_S3] = framep->tf_regs[FRAME_S3]; 1423 regp->r_regs[R_S4] = framep->tf_regs[FRAME_S4]; 1424 regp->r_regs[R_S5] = framep->tf_regs[FRAME_S5]; 1425 regp->r_regs[R_S6] = framep->tf_regs[FRAME_S6]; 1426 regp->r_regs[R_A0] = framep->tf_regs[FRAME_A0]; 1427 regp->r_regs[R_A1] = framep->tf_regs[FRAME_A1]; 1428 regp->r_regs[R_A2] = framep->tf_regs[FRAME_A2]; 1429 regp->r_regs[R_A3] = framep->tf_regs[FRAME_A3]; 1430 regp->r_regs[R_A4] = framep->tf_regs[FRAME_A4]; 1431 regp->r_regs[R_A5] = framep->tf_regs[FRAME_A5]; 1432 regp->r_regs[R_T8] = framep->tf_regs[FRAME_T8]; 1433 regp->r_regs[R_T9] = framep->tf_regs[FRAME_T9]; 1434 regp->r_regs[R_T10] = framep->tf_regs[FRAME_T10]; 1435 regp->r_regs[R_T11] = framep->tf_regs[FRAME_T11]; 1436 regp->r_regs[R_RA] = framep->tf_regs[FRAME_RA]; 1437 regp->r_regs[R_T12] = framep->tf_regs[FRAME_T12]; 1438 regp->r_regs[R_AT] = framep->tf_regs[FRAME_AT]; 1439 regp->r_regs[R_GP] = framep->tf_regs[FRAME_GP]; 1440 /* regp->r_regs[R_SP] = framep->tf_regs[FRAME_SP]; XXX */ 1441 regp->r_regs[R_ZERO] = 0; 1442 } 1443 1444 void 1445 regtoframe(regp, framep) 1446 const struct reg *regp; 1447 struct trapframe *framep; 1448 { 1449 1450 framep->tf_regs[FRAME_V0] = regp->r_regs[R_V0]; 1451 framep->tf_regs[FRAME_T0] = regp->r_regs[R_T0]; 1452 framep->tf_regs[FRAME_T1] = regp->r_regs[R_T1]; 1453 framep->tf_regs[FRAME_T2] = regp->r_regs[R_T2]; 1454 framep->tf_regs[FRAME_T3] = regp->r_regs[R_T3]; 1455 framep->tf_regs[FRAME_T4] = regp->r_regs[R_T4]; 1456 framep->tf_regs[FRAME_T5] = regp->r_regs[R_T5]; 1457 framep->tf_regs[FRAME_T6] = regp->r_regs[R_T6]; 1458 framep->tf_regs[FRAME_T7] = regp->r_regs[R_T7]; 1459 framep->tf_regs[FRAME_S0] = regp->r_regs[R_S0]; 1460 framep->tf_regs[FRAME_S1] = regp->r_regs[R_S1]; 1461 framep->tf_regs[FRAME_S2] = regp->r_regs[R_S2]; 1462 framep->tf_regs[FRAME_S3] = regp->r_regs[R_S3]; 1463 framep->tf_regs[FRAME_S4] = regp->r_regs[R_S4]; 1464 framep->tf_regs[FRAME_S5] = regp->r_regs[R_S5]; 1465 framep->tf_regs[FRAME_S6] = regp->r_regs[R_S6]; 1466 framep->tf_regs[FRAME_A0] = regp->r_regs[R_A0]; 1467 framep->tf_regs[FRAME_A1] = regp->r_regs[R_A1]; 1468 framep->tf_regs[FRAME_A2] = regp->r_regs[R_A2]; 1469 framep->tf_regs[FRAME_A3] = regp->r_regs[R_A3]; 1470 framep->tf_regs[FRAME_A4] = regp->r_regs[R_A4]; 1471 framep->tf_regs[FRAME_A5] = regp->r_regs[R_A5]; 1472 framep->tf_regs[FRAME_T8] = regp->r_regs[R_T8]; 1473 framep->tf_regs[FRAME_T9] = regp->r_regs[R_T9]; 1474 framep->tf_regs[FRAME_T10] = regp->r_regs[R_T10]; 1475 framep->tf_regs[FRAME_T11] = regp->r_regs[R_T11]; 1476 framep->tf_regs[FRAME_RA] = regp->r_regs[R_RA]; 1477 framep->tf_regs[FRAME_T12] = regp->r_regs[R_T12]; 1478 framep->tf_regs[FRAME_AT] = regp->r_regs[R_AT]; 1479 framep->tf_regs[FRAME_GP] = regp->r_regs[R_GP]; 1480 /* framep->tf_regs[FRAME_SP] = regp->r_regs[R_SP]; XXX */ 1481 /* ??? = regp->r_regs[R_ZERO]; */ 1482 } 1483 1484 void 1485 printregs(regp) 1486 struct reg *regp; 1487 { 1488 int i; 1489 1490 for (i = 0; i < 32; i++) 1491 printf("R%d:\t0x%016lx%s", i, regp->r_regs[i], 1492 i & 1 ? "\n" : "\t"); 1493 } 1494 1495 void 1496 regdump(framep) 1497 struct trapframe *framep; 1498 { 1499 struct reg reg; 1500 1501 frametoreg(framep, ®); 1502 reg.r_regs[R_SP] = alpha_pal_rdusp(); 1503 1504 printf("REGISTERS:\n"); 1505 printregs(®); 1506 } 1507 1508 1509 1510 void * 1511 getframe(const struct lwp *l, int sig, int *onstack) 1512 { 1513 void * frame; 1514 struct proc *p; 1515 1516 p = l->l_proc; 1517 1518 /* Do we need to jump onto the signal stack? */ 1519 *onstack = 1520 (p->p_sigctx.ps_sigstk.ss_flags & (SS_DISABLE | SS_ONSTACK)) == 0 && 1521 (SIGACTION(p, sig).sa_flags & SA_ONSTACK) != 0; 1522 1523 if (*onstack) 1524 frame = (void *)((caddr_t)p->p_sigctx.ps_sigstk.ss_sp + 1525 p->p_sigctx.ps_sigstk.ss_size); 1526 else 1527 frame = (void *)(alpha_pal_rdusp()); 1528 return (frame); 1529 } 1530 1531 void 1532 buildcontext(struct lwp *l, const void *catcher, const void *tramp, const void *fp) 1533 { 1534 struct trapframe *tf = l->l_md.md_tf; 1535 1536 tf->tf_regs[FRAME_RA] = (u_int64_t)tramp; 1537 tf->tf_regs[FRAME_PC] = (u_int64_t)catcher; 1538 tf->tf_regs[FRAME_T12] = (u_int64_t)catcher; 1539 alpha_pal_wrusp((unsigned long)fp); 1540 } 1541 1542 1543 /* 1544 * Send an interrupt to process, new style 1545 */ 1546 void 1547 sendsig_siginfo(const ksiginfo_t *ksi, const sigset_t *mask) 1548 { 1549 struct lwp *l = curlwp; 1550 struct proc *p = l->l_proc; 1551 struct sigacts *ps = p->p_sigacts; 1552 int onstack, sig = ksi->ksi_signo; 1553 struct sigframe_siginfo *fp, frame; 1554 struct trapframe *tf; 1555 sig_t catcher = SIGACTION(p, ksi->ksi_signo).sa_handler; 1556 1557 fp = (struct sigframe_siginfo *)getframe(l,ksi->ksi_signo,&onstack); 1558 tf = l->l_md.md_tf; 1559 1560 /* Allocate space for the signal handler context. */ 1561 fp--; 1562 1563 /* Build stack frame for signal trampoline. */ 1564 switch (ps->sa_sigdesc[sig].sd_vers) { 1565 case 0: /* handled by sendsig_sigcontext */ 1566 case 1: /* handled by sendsig_sigcontext */ 1567 default: /* unknown version */ 1568 printf("nsendsig: bad version %d\n", 1569 ps->sa_sigdesc[sig].sd_vers); 1570 sigexit(l, SIGILL); 1571 case 2: 1572 break; 1573 } 1574 1575 #ifdef DEBUG 1576 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1577 printf("sendsig_siginfo(%d): sig %d ssp %p usp %p\n", p->p_pid, 1578 sig, &onstack, scp); 1579 #endif 1580 1581 /* Build stack frame for signal trampoline. */ 1582 1583 frame.sf_si._info = *ksi; 1584 frame.sf_uc.uc_flags = _UC_SIGMASK; 1585 frame.sf_uc.uc_sigmask = *mask; 1586 frame.sf_uc.uc_link = NULL; 1587 memset(&frame.sf_uc.uc_stack, 0, sizeof(frame.sf_uc.uc_stack)); 1588 cpu_getmcontext(l, &frame.sf_uc.uc_mcontext, &frame.sf_uc.uc_flags); 1589 1590 if (copyout(&frame, fp, sizeof(frame)) != 0) { 1591 /* 1592 * Process has trashed its stack; give it an illegal 1593 * instruction to halt it in its tracks. 1594 */ 1595 #ifdef DEBUG 1596 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1597 printf("sendsig_siginfo(%d): copyout failed on sig %d\n", 1598 p->p_pid, sig); 1599 #endif 1600 sigexit(l, SIGILL); 1601 /* NOTREACHED */ 1602 } 1603 1604 #ifdef DEBUG 1605 if (sigdebug & SDB_FOLLOW) 1606 printf("sendsig_siginfo(%d): sig %d scp %p code %lx\n", 1607 p->p_pid, sig, scp, code); 1608 #endif 1609 1610 /* 1611 * Set up the registers to directly invoke the signal handler. The 1612 * signal trampoline is then used to return from the signal. Note 1613 * the trampoline version numbers are coordinated with machine- 1614 * dependent code in libc. 1615 */ 1616 1617 tf->tf_regs[FRAME_A0] = sig; 1618 tf->tf_regs[FRAME_A1] = (u_int64_t)&fp->sf_si; 1619 tf->tf_regs[FRAME_A2] = (u_int64_t)&fp->sf_uc; 1620 1621 buildcontext(l,catcher,ps->sa_sigdesc[sig].sd_tramp,fp); 1622 1623 /* Remember that we're now on the signal stack. */ 1624 if (onstack) 1625 p->p_sigctx.ps_sigstk.ss_flags |= SS_ONSTACK; 1626 1627 #ifdef DEBUG 1628 if (sigdebug & SDB_FOLLOW) 1629 printf("sendsig_siginfo(%d): pc %lx, catcher %lx\n", p->p_pid, 1630 frame->tf_regs[FRAME_PC], frame->tf_regs[FRAME_A3]); 1631 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1632 printf("sendsig_siginfo(%d): sig %d returns\n", 1633 p->p_pid, sig); 1634 #endif 1635 } 1636 1637 1638 void 1639 sendsig(const ksiginfo_t *ksi, const sigset_t *mask) 1640 { 1641 #ifdef COMPAT_16 1642 if (curproc->p_sigacts->sa_sigdesc[ksi->ksi_signo].sd_vers < 2) { 1643 sendsig_sigcontext(ksi, mask); 1644 } else { 1645 #endif 1646 #ifdef DEBUG 1647 if (sigdebug & SDB_FOLLOW) 1648 printf("sendsig: sendsig called: sig %d vers %d\n", 1649 ksi->ksi_signo, 1650 curproc->p_sigacts->sa_sigdesc[ksi->ksi_signo].sd_vers); 1651 #endif 1652 sendsig_siginfo(ksi, mask); 1653 #ifdef COMPAT_16 1654 } 1655 #endif 1656 } 1657 1658 void 1659 cpu_upcall(struct lwp *l, int type, int nevents, int ninterrupted, void *sas, void *ap, void *sp, sa_upcall_t upcall) 1660 { 1661 struct trapframe *tf; 1662 1663 tf = l->l_md.md_tf; 1664 1665 tf->tf_regs[FRAME_PC] = (u_int64_t)upcall; 1666 tf->tf_regs[FRAME_RA] = 0; 1667 tf->tf_regs[FRAME_A0] = type; 1668 tf->tf_regs[FRAME_A1] = (u_int64_t)sas; 1669 tf->tf_regs[FRAME_A2] = nevents; 1670 tf->tf_regs[FRAME_A3] = ninterrupted; 1671 tf->tf_regs[FRAME_A4] = (u_int64_t)ap; 1672 tf->tf_regs[FRAME_T12] = (u_int64_t)upcall; /* t12 is pv */ 1673 alpha_pal_wrusp((unsigned long)sp); 1674 } 1675 1676 /* 1677 * machine dependent system variables. 1678 */ 1679 int 1680 cpu_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 1681 int *name; 1682 u_int namelen; 1683 void *oldp; 1684 size_t *oldlenp; 1685 void *newp; 1686 size_t newlen; 1687 struct proc *p; 1688 { 1689 dev_t consdev; 1690 1691 /* all sysctl names at this level are terminal */ 1692 if (namelen != 1) 1693 return (ENOTDIR); /* overloaded */ 1694 1695 switch (name[0]) { 1696 case CPU_CONSDEV: 1697 if (cn_tab != NULL) 1698 consdev = cn_tab->cn_dev; 1699 else 1700 consdev = NODEV; 1701 return (sysctl_rdstruct(oldp, oldlenp, newp, &consdev, 1702 sizeof consdev)); 1703 1704 case CPU_ROOT_DEVICE: 1705 return (sysctl_rdstring(oldp, oldlenp, newp, 1706 root_device->dv_xname)); 1707 1708 case CPU_UNALIGNED_PRINT: 1709 return (sysctl_int(oldp, oldlenp, newp, newlen, 1710 &alpha_unaligned_print)); 1711 1712 case CPU_UNALIGNED_FIX: 1713 return (sysctl_int(oldp, oldlenp, newp, newlen, 1714 &alpha_unaligned_fix)); 1715 1716 case CPU_UNALIGNED_SIGBUS: 1717 return (sysctl_int(oldp, oldlenp, newp, newlen, 1718 &alpha_unaligned_sigbus)); 1719 1720 case CPU_BOOTED_KERNEL: 1721 return (sysctl_rdstring(oldp, oldlenp, newp, 1722 bootinfo.booted_kernel)); 1723 1724 case CPU_FP_SYNC_COMPLETE: 1725 return (sysctl_int(oldp, oldlenp, newp, newlen, 1726 &alpha_fp_sync_complete)); 1727 1728 default: 1729 return (EOPNOTSUPP); 1730 } 1731 /* NOTREACHED */ 1732 } 1733 1734 /* 1735 * Set registers on exec. 1736 */ 1737 void 1738 setregs(l, pack, stack) 1739 register struct lwp *l; 1740 struct exec_package *pack; 1741 u_long stack; 1742 { 1743 struct trapframe *tfp = l->l_md.md_tf; 1744 #ifdef DEBUG 1745 int i; 1746 #endif 1747 1748 #ifdef DEBUG 1749 /* 1750 * Crash and dump, if the user requested it. 1751 */ 1752 if (boothowto & RB_DUMP) 1753 panic("crash requested by boot flags"); 1754 #endif 1755 1756 #ifdef DEBUG 1757 for (i = 0; i < FRAME_SIZE; i++) 1758 tfp->tf_regs[i] = 0xbabefacedeadbeef; 1759 #else 1760 memset(tfp->tf_regs, 0, FRAME_SIZE * sizeof tfp->tf_regs[0]); 1761 #endif 1762 memset(&l->l_addr->u_pcb.pcb_fp, 0, sizeof l->l_addr->u_pcb.pcb_fp); 1763 alpha_pal_wrusp(stack); 1764 tfp->tf_regs[FRAME_PS] = ALPHA_PSL_USERSET; 1765 tfp->tf_regs[FRAME_PC] = pack->ep_entry & ~3; 1766 1767 tfp->tf_regs[FRAME_A0] = stack; /* a0 = sp */ 1768 tfp->tf_regs[FRAME_A1] = 0; /* a1 = rtld cleanup */ 1769 tfp->tf_regs[FRAME_A2] = 0; /* a2 = rtld object */ 1770 tfp->tf_regs[FRAME_A3] = (u_int64_t)l->l_proc->p_psstr; /* a3 = ps_strings */ 1771 tfp->tf_regs[FRAME_T12] = tfp->tf_regs[FRAME_PC]; /* a.k.a. PV */ 1772 1773 l->l_md.md_flags &= ~MDP_FPUSED; 1774 if (__predict_true((l->l_md.md_flags & IEEE_INHERIT) == 0)) { 1775 l->l_md.md_flags &= ~MDP_FP_C; 1776 l->l_addr->u_pcb.pcb_fp.fpr_cr = FPCR_DYN(FP_RN); 1777 } 1778 if (l->l_addr->u_pcb.pcb_fpcpu != NULL) 1779 fpusave_proc(l, 0); 1780 } 1781 1782 /* 1783 * Release the FPU. 1784 */ 1785 void 1786 fpusave_cpu(struct cpu_info *ci, int save) 1787 { 1788 struct lwp *l; 1789 #if defined(MULTIPROCESSOR) 1790 int s; 1791 #endif 1792 1793 KDASSERT(ci == curcpu()); 1794 1795 #if defined(MULTIPROCESSOR) 1796 atomic_setbits_ulong(&ci->ci_flags, CPUF_FPUSAVE); 1797 #endif 1798 1799 l = ci->ci_fpcurlwp; 1800 if (l == NULL) 1801 goto out; 1802 1803 if (save) { 1804 alpha_pal_wrfen(1); 1805 savefpstate(&l->l_addr->u_pcb.pcb_fp); 1806 } 1807 1808 alpha_pal_wrfen(0); 1809 1810 FPCPU_LOCK(&l->l_addr->u_pcb, s); 1811 1812 l->l_addr->u_pcb.pcb_fpcpu = NULL; 1813 ci->ci_fpcurlwp = NULL; 1814 1815 FPCPU_UNLOCK(&l->l_addr->u_pcb, s); 1816 1817 out: 1818 #if defined(MULTIPROCESSOR) 1819 atomic_clearbits_ulong(&ci->ci_flags, CPUF_FPUSAVE); 1820 #endif 1821 return; 1822 } 1823 1824 /* 1825 * Synchronize FP state for this process. 1826 */ 1827 void 1828 fpusave_proc(struct lwp *l, int save) 1829 { 1830 struct cpu_info *ci = curcpu(); 1831 struct cpu_info *oci; 1832 #if defined(MULTIPROCESSOR) 1833 u_long ipi = save ? ALPHA_IPI_SYNCH_FPU : ALPHA_IPI_DISCARD_FPU; 1834 int s, spincount; 1835 #endif 1836 1837 KDASSERT(l->l_addr != NULL); 1838 KDASSERT(l->l_flag & L_INMEM); 1839 1840 FPCPU_LOCK(&l->l_addr->u_pcb, s); 1841 1842 oci = l->l_addr->u_pcb.pcb_fpcpu; 1843 if (oci == NULL) { 1844 FPCPU_UNLOCK(&l->l_addr->u_pcb, s); 1845 return; 1846 } 1847 1848 #if defined(MULTIPROCESSOR) 1849 if (oci == ci) { 1850 KASSERT(ci->ci_fpcurlwp == l); 1851 FPCPU_UNLOCK(&l->l_addr->u_pcb, s); 1852 fpusave_cpu(ci, save); 1853 return; 1854 } 1855 1856 KASSERT(oci->ci_fpcurlwp == l); 1857 alpha_send_ipi(oci->ci_cpuid, ipi); 1858 FPCPU_UNLOCK(&l->l_addr->u_pcb, s); 1859 1860 spincount = 0; 1861 while (l->l_addr->u_pcb.pcb_fpcpu != NULL) { 1862 spincount++; 1863 delay(1000); /* XXX */ 1864 if (spincount > 10000) 1865 panic("fpsave ipi didn't"); 1866 } 1867 #else 1868 KASSERT(ci->ci_fpcurlwp == l); 1869 FPCPU_UNLOCK(&l->l_addr->u_pcb, s); 1870 fpusave_cpu(ci, save); 1871 #endif /* MULTIPROCESSOR */ 1872 } 1873 1874 /* 1875 * Wait "n" microseconds. 1876 */ 1877 void 1878 delay(n) 1879 unsigned long n; 1880 { 1881 unsigned long pcc0, pcc1, curcycle, cycles, usec; 1882 1883 if (n == 0) 1884 return; 1885 1886 pcc0 = alpha_rpcc() & 0xffffffffUL; 1887 cycles = 0; 1888 usec = 0; 1889 1890 while (usec <= n) { 1891 /* 1892 * Get the next CPU cycle count- assumes that we cannot 1893 * have had more than one 32 bit overflow. 1894 */ 1895 pcc1 = alpha_rpcc() & 0xffffffffUL; 1896 if (pcc1 < pcc0) 1897 curcycle = (pcc1 + 0x100000000UL) - pcc0; 1898 else 1899 curcycle = pcc1 - pcc0; 1900 1901 /* 1902 * We now have the number of processor cycles since we 1903 * last checked. Add the current cycle count to the 1904 * running total. If it's over cycles_per_usec, increment 1905 * the usec counter. 1906 */ 1907 cycles += curcycle; 1908 while (cycles > cycles_per_usec) { 1909 usec++; 1910 cycles -= cycles_per_usec; 1911 } 1912 pcc0 = pcc1; 1913 } 1914 } 1915 1916 #ifdef EXEC_ECOFF 1917 void 1918 cpu_exec_ecoff_setregs(l, epp, stack) 1919 struct lwp *l; 1920 struct exec_package *epp; 1921 u_long stack; 1922 { 1923 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 1924 1925 l->l_md.md_tf->tf_regs[FRAME_GP] = execp->a.gp_value; 1926 } 1927 1928 /* 1929 * cpu_exec_ecoff_hook(): 1930 * cpu-dependent ECOFF format hook for execve(). 1931 * 1932 * Do any machine-dependent diddling of the exec package when doing ECOFF. 1933 * 1934 */ 1935 int 1936 cpu_exec_ecoff_probe(p, epp) 1937 struct proc *p; 1938 struct exec_package *epp; 1939 { 1940 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 1941 int error; 1942 1943 if (execp->f.f_magic == ECOFF_MAGIC_NETBSD_ALPHA) 1944 error = 0; 1945 else 1946 error = ENOEXEC; 1947 1948 return (error); 1949 } 1950 #endif /* EXEC_ECOFF */ 1951 1952 int 1953 alpha_pa_access(pa) 1954 u_long pa; 1955 { 1956 int i; 1957 1958 for (i = 0; i < mem_cluster_cnt; i++) { 1959 if (pa < mem_clusters[i].start) 1960 continue; 1961 if ((pa - mem_clusters[i].start) >= 1962 (mem_clusters[i].size & ~PAGE_MASK)) 1963 continue; 1964 return (mem_clusters[i].size & PAGE_MASK); /* prot */ 1965 } 1966 1967 /* 1968 * Address is not a memory address. If we're secure, disallow 1969 * access. Otherwise, grant read/write. 1970 */ 1971 if (securelevel > 0) 1972 return (PROT_NONE); 1973 else 1974 return (PROT_READ | PROT_WRITE); 1975 } 1976 1977 /* XXX XXX BEGIN XXX XXX */ 1978 paddr_t alpha_XXX_dmamap_or; /* XXX */ 1979 /* XXX */ 1980 paddr_t /* XXX */ 1981 alpha_XXX_dmamap(v) /* XXX */ 1982 vaddr_t v; /* XXX */ 1983 { /* XXX */ 1984 /* XXX */ 1985 return (vtophys(v) | alpha_XXX_dmamap_or); /* XXX */ 1986 } /* XXX */ 1987 /* XXX XXX END XXX XXX */ 1988 1989 char * 1990 dot_conv(x) 1991 unsigned long x; 1992 { 1993 int i; 1994 char *xc; 1995 static int next; 1996 static char space[2][20]; 1997 1998 xc = space[next ^= 1] + sizeof space[0]; 1999 *--xc = '\0'; 2000 for (i = 0;; ++i) { 2001 if (i && (i & 3) == 0) 2002 *--xc = '.'; 2003 *--xc = "0123456789abcdef"[x & 0xf]; 2004 x >>= 4; 2005 if (x == 0) 2006 break; 2007 } 2008 return xc; 2009 } 2010 2011 void 2012 cpu_getmcontext(l, mcp, flags) 2013 struct lwp *l; 2014 mcontext_t *mcp; 2015 unsigned int *flags; 2016 { 2017 struct trapframe *frame = l->l_md.md_tf; 2018 __greg_t *gr = mcp->__gregs; 2019 __greg_t ras_pc; 2020 2021 /* Save register context. */ 2022 frametoreg(frame, (struct reg *)gr); 2023 /* XXX if there's a better, general way to get the USP of 2024 * an LWP that might or might not be curlwp, I'd like to know 2025 * about it. 2026 */ 2027 if (l == curlwp) { 2028 gr[_REG_SP] = alpha_pal_rdusp(); 2029 gr[_REG_UNIQUE] = alpha_pal_rdunique(); 2030 } else { 2031 gr[_REG_SP] = l->l_addr->u_pcb.pcb_hw.apcb_usp; 2032 gr[_REG_UNIQUE] = l->l_addr->u_pcb.pcb_hw.apcb_unique; 2033 } 2034 gr[_REG_PC] = frame->tf_regs[FRAME_PC]; 2035 gr[_REG_PS] = frame->tf_regs[FRAME_PS]; 2036 2037 if ((ras_pc = (__greg_t)ras_lookup(l->l_proc, 2038 (caddr_t) gr[_REG_PC])) != -1) 2039 gr[_REG_PC] = ras_pc; 2040 2041 *flags |= _UC_CPU | _UC_UNIQUE; 2042 2043 /* Save floating point register context, if any, and copy it. */ 2044 if (l->l_md.md_flags & MDP_FPUSED) { 2045 fpusave_proc(l, 1); 2046 (void)memcpy(&mcp->__fpregs, &l->l_addr->u_pcb.pcb_fp, 2047 sizeof (mcp->__fpregs)); 2048 mcp->__fpregs.__fp_fpcr = alpha_read_fp_c(l); 2049 *flags |= _UC_FPU; 2050 } 2051 } 2052 2053 2054 int 2055 cpu_setmcontext(l, mcp, flags) 2056 struct lwp *l; 2057 const mcontext_t *mcp; 2058 unsigned int flags; 2059 { 2060 struct trapframe *frame = l->l_md.md_tf; 2061 const __greg_t *gr = mcp->__gregs; 2062 2063 /* Restore register context, if any. */ 2064 if (flags & _UC_CPU) { 2065 /* Check for security violations first. */ 2066 if ((gr[_REG_PS] & ALPHA_PSL_USERSET) != ALPHA_PSL_USERSET || 2067 (gr[_REG_PS] & ALPHA_PSL_USERCLR) != 0) 2068 return (EINVAL); 2069 2070 regtoframe((struct reg *)gr, l->l_md.md_tf); 2071 if (l == curlwp) 2072 alpha_pal_wrusp(gr[_REG_SP]); 2073 else 2074 l->l_addr->u_pcb.pcb_hw.apcb_usp = gr[_REG_SP]; 2075 frame->tf_regs[FRAME_PC] = gr[_REG_PC]; 2076 frame->tf_regs[FRAME_PS] = gr[_REG_PS]; 2077 } 2078 if (flags & _UC_UNIQUE) { 2079 if (l == curlwp) 2080 alpha_pal_wrunique(gr[_REG_UNIQUE]); 2081 else 2082 l->l_addr->u_pcb.pcb_hw.apcb_unique = gr[_REG_UNIQUE]; 2083 } 2084 /* Restore floating point register context, if any. */ 2085 if (flags & _UC_FPU) { 2086 /* If we have an FP register context, get rid of it. */ 2087 if (l->l_addr->u_pcb.pcb_fpcpu != NULL) 2088 fpusave_proc(l, 0); 2089 (void)memcpy(&l->l_addr->u_pcb.pcb_fp, &mcp->__fpregs, 2090 sizeof (l->l_addr->u_pcb.pcb_fp)); 2091 l->l_md.md_flags = mcp->__fpregs.__fp_fpcr & MDP_FP_C; 2092 l->l_md.md_flags |= MDP_FPUSED; 2093 } 2094 2095 return (0); 2096 } 2097
Indexes created Fri Oct 03 02:09:57 GMT 2025