machdep.c revision 1.267
1 /* $NetBSD: machdep.c,v 1.267 2003/05/09 05:33:52 enami 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 1.267 2003/05/09 05:33:52 enami 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 * Init mapping for u page(s) for proc 0 642 */ 643 lwp0.l_addr = proc0paddr = 644 (struct user *)pmap_steal_memory(UPAGES * PAGE_SIZE); 645 646 /* 647 * Allocate space for system data structures. These data structures 648 * are allocated here instead of cpu_startup() because physical 649 * memory is directly addressable. We don't have to map these into 650 * virtual address space. 651 */ 652 size = (vsize_t)allocsys(NULL, NULL); 653 v = (caddr_t)pmap_steal_memory(size); 654 if ((allocsys(v, NULL) - v) != size) 655 panic("alpha_init: table size inconsistency"); 656 657 /* 658 * Initialize the virtual memory system, and set the 659 * page table base register in proc 0's PCB. 660 */ 661 pmap_bootstrap(ALPHA_PHYS_TO_K0SEG(ptb << PGSHIFT), 662 hwrpb->rpb_max_asn, hwrpb->rpb_pcs_cnt); 663 664 /* 665 * Initialize the rest of proc 0's PCB, and cache its physical 666 * address. 667 */ 668 lwp0.l_md.md_pcbpaddr = 669 (struct pcb *)ALPHA_K0SEG_TO_PHYS((vaddr_t)&proc0paddr->u_pcb); 670 671 /* 672 * Set the kernel sp, reserving space for an (empty) trapframe, 673 * and make proc0's trapframe pointer point to it for sanity. 674 */ 675 proc0paddr->u_pcb.pcb_hw.apcb_ksp = 676 (u_int64_t)proc0paddr + USPACE - sizeof(struct trapframe); 677 lwp0.l_md.md_tf = 678 (struct trapframe *)proc0paddr->u_pcb.pcb_hw.apcb_ksp; 679 simple_lock_init(&proc0paddr->u_pcb.pcb_fpcpu_slock); 680 681 /* 682 * Initialize the primary CPU's idle PCB to proc0's. In a 683 * MULTIPROCESSOR configuration, each CPU will later get 684 * its own idle PCB when autoconfiguration runs. 685 */ 686 ci->ci_idle_pcb = &proc0paddr->u_pcb; 687 ci->ci_idle_pcb_paddr = (u_long)lwp0.l_md.md_pcbpaddr; 688 689 /* Indicate that proc0 has a CPU. */ 690 lwp0.l_cpu = ci; 691 692 /* 693 * Look at arguments passed to us and compute boothowto. 694 */ 695 696 boothowto = RB_SINGLE; 697 #ifdef KADB 698 boothowto |= RB_KDB; 699 #endif 700 for (p = bootinfo.boot_flags; p && *p != '\0'; p++) { 701 /* 702 * Note that we'd really like to differentiate case here, 703 * but the Alpha AXP Architecture Reference Manual 704 * says that we shouldn't. 705 */ 706 switch (*p) { 707 case 'a': /* autoboot */ 708 case 'A': 709 boothowto &= ~RB_SINGLE; 710 break; 711 712 #ifdef DEBUG 713 case 'c': /* crash dump immediately after autoconfig */ 714 case 'C': 715 boothowto |= RB_DUMP; 716 break; 717 #endif 718 719 #if defined(KGDB) || defined(DDB) 720 case 'd': /* break into the kernel debugger ASAP */ 721 case 'D': 722 boothowto |= RB_KDB; 723 break; 724 #endif 725 726 case 'h': /* always halt, never reboot */ 727 case 'H': 728 boothowto |= RB_HALT; 729 break; 730 731 #if 0 732 case 'm': /* mini root present in memory */ 733 case 'M': 734 boothowto |= RB_MINIROOT; 735 break; 736 #endif 737 738 case 'n': /* askname */ 739 case 'N': 740 boothowto |= RB_ASKNAME; 741 break; 742 743 case 's': /* single-user (default, supported for sanity) */ 744 case 'S': 745 boothowto |= RB_SINGLE; 746 break; 747 748 case 'q': /* quiet boot */ 749 case 'Q': 750 boothowto |= AB_QUIET; 751 break; 752 753 case 'v': /* verbose boot */ 754 case 'V': 755 boothowto |= AB_VERBOSE; 756 break; 757 758 case '-': 759 /* 760 * Just ignore this. It's not required, but it's 761 * common for it to be passed regardless. 762 */ 763 break; 764 765 default: 766 printf("Unrecognized boot flag '%c'.\n", *p); 767 break; 768 } 769 } 770 771 772 /* 773 * Figure out the number of cpus in the box, from RPB fields. 774 * Really. We mean it. 775 */ 776 for (i = 0; i < hwrpb->rpb_pcs_cnt; i++) { 777 struct pcs *pcsp; 778 779 pcsp = LOCATE_PCS(hwrpb, i); 780 if ((pcsp->pcs_flags & PCS_PP) != 0) 781 ncpus++; 782 } 783 784 /* 785 * Initialize debuggers, and break into them if appropriate. 786 */ 787 #if NKSYMS || defined(DDB) || defined(LKM) 788 ksyms_init((int)((u_int64_t)ksym_end - (u_int64_t)ksym_start), 789 ksym_start, ksym_end); 790 #endif 791 792 if (boothowto & RB_KDB) { 793 #if defined(KGDB) 794 kgdb_debug_init = 1; 795 kgdb_connect(1); 796 #elif defined(DDB) 797 Debugger(); 798 #endif 799 } 800 801 /* 802 * Figure out our clock frequency, from RPB fields. 803 */ 804 hz = hwrpb->rpb_intr_freq >> 12; 805 if (!(60 <= hz && hz <= 10240)) { 806 hz = 1024; 807 #ifdef DIAGNOSTIC 808 printf("WARNING: unbelievable rpb_intr_freq: %ld (%d hz)\n", 809 hwrpb->rpb_intr_freq, hz); 810 #endif 811 } 812 } 813 814 void 815 consinit() 816 { 817 818 /* 819 * Everything related to console initialization is done 820 * in alpha_init(). 821 */ 822 #if defined(DIAGNOSTIC) && defined(_PMAP_MAY_USE_PROM_CONSOLE) 823 printf("consinit: %susing prom console\n", 824 pmap_uses_prom_console() ? "" : "not "); 825 #endif 826 } 827 828 #include "pckbc.h" 829 #include "pckbd.h" 830 #if (NPCKBC > 0) && (NPCKBD == 0) 831 832 #include <dev/ic/pckbcvar.h> 833 834 /* 835 * This is called by the pbkbc driver if no pckbd is configured. 836 * On the i386, it is used to glue in the old, deprecated console 837 * code. On the Alpha, it does nothing. 838 */ 839 int 840 pckbc_machdep_cnattach(kbctag, kbcslot) 841 pckbc_tag_t kbctag; 842 pckbc_slot_t kbcslot; 843 { 844 845 return (ENXIO); 846 } 847 #endif /* NPCKBC > 0 && NPCKBD == 0 */ 848 849 void 850 cpu_startup() 851 { 852 u_int i, base, residual; 853 vaddr_t minaddr, maxaddr; 854 vsize_t size; 855 char pbuf[9]; 856 #if defined(DEBUG) 857 extern int pmapdebug; 858 int opmapdebug = pmapdebug; 859 860 pmapdebug = 0; 861 #endif 862 863 /* 864 * Good {morning,afternoon,evening,night}. 865 */ 866 printf(version); 867 identifycpu(); 868 format_bytes(pbuf, sizeof(pbuf), ptoa(totalphysmem)); 869 printf("total memory = %s\n", pbuf); 870 format_bytes(pbuf, sizeof(pbuf), ptoa(resvmem)); 871 printf("(%s reserved for PROM, ", pbuf); 872 format_bytes(pbuf, sizeof(pbuf), ptoa(physmem)); 873 printf("%s used by NetBSD)\n", pbuf); 874 if (unusedmem) { 875 format_bytes(pbuf, sizeof(pbuf), ptoa(unusedmem)); 876 printf("WARNING: unused memory = %s\n", pbuf); 877 } 878 if (unknownmem) { 879 format_bytes(pbuf, sizeof(pbuf), ptoa(unknownmem)); 880 printf("WARNING: %s of memory with unknown purpose\n", pbuf); 881 } 882 883 /* 884 * Allocate virtual address space for file I/O buffers. 885 * Note they are different than the array of headers, 'buf', 886 * and usually occupy more virtual memory than physical. 887 */ 888 size = MAXBSIZE * nbuf; 889 if (uvm_map(kernel_map, (vaddr_t *) &buffers, round_page(size), 890 NULL, UVM_UNKNOWN_OFFSET, 0, 891 UVM_MAPFLAG(UVM_PROT_NONE, UVM_PROT_NONE, UVM_INH_NONE, 892 UVM_ADV_NORMAL, 0)) != 0) 893 panic("startup: cannot allocate VM for buffers"); 894 base = bufpages / nbuf; 895 residual = bufpages % nbuf; 896 for (i = 0; i < nbuf; i++) { 897 vsize_t curbufsize; 898 vaddr_t curbuf; 899 struct vm_page *pg; 900 901 /* 902 * Each buffer has MAXBSIZE bytes of VM space allocated. Of 903 * that MAXBSIZE space, we allocate and map (base+1) pages 904 * for the first "residual" buffers, and then we allocate 905 * "base" pages for the rest. 906 */ 907 curbuf = (vaddr_t) buffers + (i * MAXBSIZE); 908 curbufsize = PAGE_SIZE * ((i < residual) ? (base+1) : base); 909 910 while (curbufsize) { 911 pg = uvm_pagealloc(NULL, 0, NULL, 0); 912 if (pg == NULL) 913 panic("cpu_startup: not enough memory for " 914 "buffer cache"); 915 pmap_kenter_pa(curbuf, VM_PAGE_TO_PHYS(pg), 916 VM_PROT_READ|VM_PROT_WRITE); 917 curbuf += PAGE_SIZE; 918 curbufsize -= PAGE_SIZE; 919 } 920 } 921 pmap_update(pmap_kernel()); 922 923 /* 924 * Allocate a submap for exec arguments. This map effectively 925 * limits the number of processes exec'ing at any time. 926 */ 927 exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 928 16 * NCARGS, VM_MAP_PAGEABLE, FALSE, NULL); 929 930 /* 931 * Allocate a submap for physio 932 */ 933 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 934 VM_PHYS_SIZE, 0, FALSE, NULL); 935 936 /* 937 * No need to allocate an mbuf cluster submap. Mbuf clusters 938 * are allocated via the pool allocator, and we use K0SEG to 939 * map those pages. 940 */ 941 942 #if defined(DEBUG) 943 pmapdebug = opmapdebug; 944 #endif 945 format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 946 printf("avail memory = %s\n", pbuf); 947 #if 0 948 { 949 extern u_long pmap_pages_stolen; 950 951 format_bytes(pbuf, sizeof(pbuf), pmap_pages_stolen * PAGE_SIZE); 952 printf("stolen memory for VM structures = %s\n", pbuf); 953 } 954 #endif 955 format_bytes(pbuf, sizeof(pbuf), bufpages * PAGE_SIZE); 956 printf("using %u buffers containing %s of memory\n", nbuf, pbuf); 957 958 /* 959 * Set up buffers, so they can be used to read disk labels. 960 */ 961 bufinit(); 962 963 /* 964 * Set up the HWPCB so that it's safe to configure secondary 965 * CPUs. 966 */ 967 hwrpb_primary_init(); 968 } 969 970 /* 971 * Retrieve the platform name from the DSR. 972 */ 973 const char * 974 alpha_dsr_sysname() 975 { 976 struct dsrdb *dsr; 977 const char *sysname; 978 979 /* 980 * DSR does not exist on early HWRPB versions. 981 */ 982 if (hwrpb->rpb_version < HWRPB_DSRDB_MINVERS) 983 return (NULL); 984 985 dsr = (struct dsrdb *)(((caddr_t)hwrpb) + hwrpb->rpb_dsrdb_off); 986 sysname = (const char *)((caddr_t)dsr + (dsr->dsr_sysname_off + 987 sizeof(u_int64_t))); 988 return (sysname); 989 } 990 991 /* 992 * Lookup the system specified system variation in the provided table, 993 * returning the model string on match. 994 */ 995 const char * 996 alpha_variation_name(variation, avtp) 997 u_int64_t variation; 998 const struct alpha_variation_table *avtp; 999 { 1000 int i; 1001 1002 for (i = 0; avtp[i].avt_model != NULL; i++) 1003 if (avtp[i].avt_variation == variation) 1004 return (avtp[i].avt_model); 1005 return (NULL); 1006 } 1007 1008 /* 1009 * Generate a default platform name based for unknown system variations. 1010 */ 1011 const char * 1012 alpha_unknown_sysname() 1013 { 1014 static char s[128]; /* safe size */ 1015 1016 sprintf(s, "%s family, unknown model variation 0x%lx", 1017 platform.family, hwrpb->rpb_variation & SV_ST_MASK); 1018 return ((const char *)s); 1019 } 1020 1021 void 1022 identifycpu() 1023 { 1024 char *s; 1025 int i; 1026 1027 /* 1028 * print out CPU identification information. 1029 */ 1030 printf("%s", cpu_model); 1031 for(s = cpu_model; *s; ++s) 1032 if(strncasecmp(s, "MHz", 3) == 0) 1033 goto skipMHz; 1034 printf(", %ldMHz", hwrpb->rpb_cc_freq / 1000000); 1035 skipMHz: 1036 printf(", s/n "); 1037 for (i = 0; i < 10; i++) 1038 printf("%c", hwrpb->rpb_ssn[i]); 1039 printf("\n"); 1040 printf("%ld byte page size, %d processor%s.\n", 1041 hwrpb->rpb_page_size, ncpus, ncpus == 1 ? "" : "s"); 1042 #if 0 1043 /* this isn't defined for any systems that we run on? */ 1044 printf("serial number 0x%lx 0x%lx\n", 1045 ((long *)hwrpb->rpb_ssn)[0], ((long *)hwrpb->rpb_ssn)[1]); 1046 1047 /* and these aren't particularly useful! */ 1048 printf("variation: 0x%lx, revision 0x%lx\n", 1049 hwrpb->rpb_variation, *(long *)hwrpb->rpb_revision); 1050 #endif 1051 } 1052 1053 int waittime = -1; 1054 struct pcb dumppcb; 1055 1056 void 1057 cpu_reboot(howto, bootstr) 1058 int howto; 1059 char *bootstr; 1060 { 1061 #if defined(MULTIPROCESSOR) 1062 u_long cpu_id = cpu_number(); 1063 u_long wait_mask = (1UL << cpu_id) | 1064 (1UL << hwrpb->rpb_primary_cpu_id); 1065 int i; 1066 #endif 1067 1068 /* If "always halt" was specified as a boot flag, obey. */ 1069 if ((boothowto & RB_HALT) != 0) 1070 howto |= RB_HALT; 1071 1072 boothowto = howto; 1073 1074 /* If system is cold, just halt. */ 1075 if (cold) { 1076 boothowto |= RB_HALT; 1077 goto haltsys; 1078 } 1079 1080 if ((boothowto & RB_NOSYNC) == 0 && waittime < 0) { 1081 waittime = 0; 1082 vfs_shutdown(); 1083 /* 1084 * If we've been adjusting the clock, the todr 1085 * will be out of synch; adjust it now. 1086 */ 1087 resettodr(); 1088 } 1089 1090 /* Disable interrupts. */ 1091 splhigh(); 1092 1093 #if defined(MULTIPROCESSOR) 1094 /* 1095 * Halt all other CPUs. If we're not the primary, the 1096 * primary will spin, waiting for us to halt. 1097 */ 1098 alpha_broadcast_ipi(ALPHA_IPI_HALT); 1099 1100 for (i = 0; i < 10000; i++) { 1101 alpha_mb(); 1102 if (cpus_running == wait_mask) 1103 break; 1104 delay(1000); 1105 } 1106 alpha_mb(); 1107 if (cpus_running != wait_mask) 1108 printf("WARNING: Unable to halt secondary CPUs (0x%lx)\n", 1109 cpus_running); 1110 #endif /* MULTIPROCESSOR */ 1111 1112 /* If rebooting and a dump is requested do it. */ 1113 #if 0 1114 if ((boothowto & (RB_DUMP | RB_HALT)) == RB_DUMP) 1115 #else 1116 if (boothowto & RB_DUMP) 1117 #endif 1118 dumpsys(); 1119 1120 haltsys: 1121 1122 /* run any shutdown hooks */ 1123 doshutdownhooks(); 1124 1125 #ifdef BOOTKEY 1126 printf("hit any key to %s...\n", howto & RB_HALT ? "halt" : "reboot"); 1127 cnpollc(1); /* for proper keyboard command handling */ 1128 cngetc(); 1129 cnpollc(0); 1130 printf("\n"); 1131 #endif 1132 1133 /* Finally, powerdown/halt/reboot the system. */ 1134 if ((boothowto & RB_POWERDOWN) == RB_POWERDOWN && 1135 platform.powerdown != NULL) { 1136 (*platform.powerdown)(); 1137 printf("WARNING: powerdown failed!\n"); 1138 } 1139 printf("%s\n\n", (boothowto & RB_HALT) ? "halted." : "rebooting..."); 1140 #if defined(MULTIPROCESSOR) 1141 if (cpu_id != hwrpb->rpb_primary_cpu_id) 1142 cpu_halt(); 1143 else 1144 #endif 1145 prom_halt(boothowto & RB_HALT); 1146 /*NOTREACHED*/ 1147 } 1148 1149 /* 1150 * These variables are needed by /sbin/savecore 1151 */ 1152 u_int32_t dumpmag = 0x8fca0101; /* magic number */ 1153 int dumpsize = 0; /* pages */ 1154 long dumplo = 0; /* blocks */ 1155 1156 /* 1157 * cpu_dumpsize: calculate size of machine-dependent kernel core dump headers. 1158 */ 1159 int 1160 cpu_dumpsize() 1161 { 1162 int size; 1163 1164 size = ALIGN(sizeof(kcore_seg_t)) + ALIGN(sizeof(cpu_kcore_hdr_t)) + 1165 ALIGN(mem_cluster_cnt * sizeof(phys_ram_seg_t)); 1166 if (roundup(size, dbtob(1)) != dbtob(1)) 1167 return -1; 1168 1169 return (1); 1170 } 1171 1172 /* 1173 * cpu_dump_mempagecnt: calculate size of RAM (in pages) to be dumped. 1174 */ 1175 u_long 1176 cpu_dump_mempagecnt() 1177 { 1178 u_long i, n; 1179 1180 n = 0; 1181 for (i = 0; i < mem_cluster_cnt; i++) 1182 n += atop(mem_clusters[i].size); 1183 return (n); 1184 } 1185 1186 /* 1187 * cpu_dump: dump machine-dependent kernel core dump headers. 1188 */ 1189 int 1190 cpu_dump() 1191 { 1192 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1193 char buf[dbtob(1)]; 1194 kcore_seg_t *segp; 1195 cpu_kcore_hdr_t *cpuhdrp; 1196 phys_ram_seg_t *memsegp; 1197 const struct bdevsw *bdev; 1198 int i; 1199 1200 bdev = bdevsw_lookup(dumpdev); 1201 if (bdev == NULL) 1202 return (ENXIO); 1203 dump = bdev->d_dump; 1204 1205 memset(buf, 0, sizeof buf); 1206 segp = (kcore_seg_t *)buf; 1207 cpuhdrp = (cpu_kcore_hdr_t *)&buf[ALIGN(sizeof(*segp))]; 1208 memsegp = (phys_ram_seg_t *)&buf[ ALIGN(sizeof(*segp)) + 1209 ALIGN(sizeof(*cpuhdrp))]; 1210 1211 /* 1212 * Generate a segment header. 1213 */ 1214 CORE_SETMAGIC(*segp, KCORE_MAGIC, MID_MACHINE, CORE_CPU); 1215 segp->c_size = dbtob(1) - ALIGN(sizeof(*segp)); 1216 1217 /* 1218 * Add the machine-dependent header info. 1219 */ 1220 cpuhdrp->lev1map_pa = ALPHA_K0SEG_TO_PHYS((vaddr_t)kernel_lev1map); 1221 cpuhdrp->page_size = PAGE_SIZE; 1222 cpuhdrp->nmemsegs = mem_cluster_cnt; 1223 1224 /* 1225 * Fill in the memory segment descriptors. 1226 */ 1227 for (i = 0; i < mem_cluster_cnt; i++) { 1228 memsegp[i].start = mem_clusters[i].start; 1229 memsegp[i].size = mem_clusters[i].size & ~PAGE_MASK; 1230 } 1231 1232 return (dump(dumpdev, dumplo, (caddr_t)buf, dbtob(1))); 1233 } 1234 1235 /* 1236 * This is called by main to set dumplo and dumpsize. 1237 * Dumps always skip the first PAGE_SIZE of disk space 1238 * in case there might be a disk label stored there. 1239 * If there is extra space, put dump at the end to 1240 * reduce the chance that swapping trashes it. 1241 */ 1242 void 1243 cpu_dumpconf() 1244 { 1245 const struct bdevsw *bdev; 1246 int nblks, dumpblks; /* size of dump area */ 1247 1248 if (dumpdev == NODEV) 1249 goto bad; 1250 bdev = bdevsw_lookup(dumpdev); 1251 if (bdev == NULL) 1252 panic("dumpconf: bad dumpdev=0x%x", dumpdev); 1253 if (bdev->d_psize == NULL) 1254 goto bad; 1255 nblks = (*bdev->d_psize)(dumpdev); 1256 if (nblks <= ctod(1)) 1257 goto bad; 1258 1259 dumpblks = cpu_dumpsize(); 1260 if (dumpblks < 0) 1261 goto bad; 1262 dumpblks += ctod(cpu_dump_mempagecnt()); 1263 1264 /* If dump won't fit (incl. room for possible label), punt. */ 1265 if (dumpblks > (nblks - ctod(1))) 1266 goto bad; 1267 1268 /* Put dump at end of partition */ 1269 dumplo = nblks - dumpblks; 1270 1271 /* dumpsize is in page units, and doesn't include headers. */ 1272 dumpsize = cpu_dump_mempagecnt(); 1273 return; 1274 1275 bad: 1276 dumpsize = 0; 1277 return; 1278 } 1279 1280 /* 1281 * Dump the kernel's image to the swap partition. 1282 */ 1283 #define BYTES_PER_DUMP PAGE_SIZE 1284 1285 void 1286 dumpsys() 1287 { 1288 const struct bdevsw *bdev; 1289 u_long totalbytesleft, bytes, i, n, memcl; 1290 u_long maddr; 1291 int psize; 1292 daddr_t blkno; 1293 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1294 int error; 1295 1296 /* Save registers. */ 1297 savectx(&dumppcb); 1298 1299 if (dumpdev == NODEV) 1300 return; 1301 bdev = bdevsw_lookup(dumpdev); 1302 if (bdev == NULL || bdev->d_psize == NULL) 1303 return; 1304 1305 /* 1306 * For dumps during autoconfiguration, 1307 * if dump device has already configured... 1308 */ 1309 if (dumpsize == 0) 1310 cpu_dumpconf(); 1311 if (dumplo <= 0) { 1312 printf("\ndump to dev %u,%u not possible\n", major(dumpdev), 1313 minor(dumpdev)); 1314 return; 1315 } 1316 printf("\ndumping to dev %u,%u offset %ld\n", major(dumpdev), 1317 minor(dumpdev), dumplo); 1318 1319 psize = (*bdev->d_psize)(dumpdev); 1320 printf("dump "); 1321 if (psize == -1) { 1322 printf("area unavailable\n"); 1323 return; 1324 } 1325 1326 /* XXX should purge all outstanding keystrokes. */ 1327 1328 if ((error = cpu_dump()) != 0) 1329 goto err; 1330 1331 totalbytesleft = ptoa(cpu_dump_mempagecnt()); 1332 blkno = dumplo + cpu_dumpsize(); 1333 dump = bdev->d_dump; 1334 error = 0; 1335 1336 for (memcl = 0; memcl < mem_cluster_cnt; memcl++) { 1337 maddr = mem_clusters[memcl].start; 1338 bytes = mem_clusters[memcl].size & ~PAGE_MASK; 1339 1340 for (i = 0; i < bytes; i += n, totalbytesleft -= n) { 1341 1342 /* Print out how many MBs we to go. */ 1343 if ((totalbytesleft % (1024*1024)) == 0) 1344 printf("%ld ", totalbytesleft / (1024 * 1024)); 1345 1346 /* Limit size for next transfer. */ 1347 n = bytes - i; 1348 if (n > BYTES_PER_DUMP) 1349 n = BYTES_PER_DUMP; 1350 1351 error = (*dump)(dumpdev, blkno, 1352 (caddr_t)ALPHA_PHYS_TO_K0SEG(maddr), n); 1353 if (error) 1354 goto err; 1355 maddr += n; 1356 blkno += btodb(n); /* XXX? */ 1357 1358 /* XXX should look for keystrokes, to cancel. */ 1359 } 1360 } 1361 1362 err: 1363 switch (error) { 1364 1365 case ENXIO: 1366 printf("device bad\n"); 1367 break; 1368 1369 case EFAULT: 1370 printf("device not ready\n"); 1371 break; 1372 1373 case EINVAL: 1374 printf("area improper\n"); 1375 break; 1376 1377 case EIO: 1378 printf("i/o error\n"); 1379 break; 1380 1381 case EINTR: 1382 printf("aborted from console\n"); 1383 break; 1384 1385 case 0: 1386 printf("succeeded\n"); 1387 break; 1388 1389 default: 1390 printf("error %d\n", error); 1391 break; 1392 } 1393 printf("\n\n"); 1394 delay(1000); 1395 } 1396 1397 void 1398 frametoreg(framep, regp) 1399 const struct trapframe *framep; 1400 struct reg *regp; 1401 { 1402 1403 regp->r_regs[R_V0] = framep->tf_regs[FRAME_V0]; 1404 regp->r_regs[R_T0] = framep->tf_regs[FRAME_T0]; 1405 regp->r_regs[R_T1] = framep->tf_regs[FRAME_T1]; 1406 regp->r_regs[R_T2] = framep->tf_regs[FRAME_T2]; 1407 regp->r_regs[R_T3] = framep->tf_regs[FRAME_T3]; 1408 regp->r_regs[R_T4] = framep->tf_regs[FRAME_T4]; 1409 regp->r_regs[R_T5] = framep->tf_regs[FRAME_T5]; 1410 regp->r_regs[R_T6] = framep->tf_regs[FRAME_T6]; 1411 regp->r_regs[R_T7] = framep->tf_regs[FRAME_T7]; 1412 regp->r_regs[R_S0] = framep->tf_regs[FRAME_S0]; 1413 regp->r_regs[R_S1] = framep->tf_regs[FRAME_S1]; 1414 regp->r_regs[R_S2] = framep->tf_regs[FRAME_S2]; 1415 regp->r_regs[R_S3] = framep->tf_regs[FRAME_S3]; 1416 regp->r_regs[R_S4] = framep->tf_regs[FRAME_S4]; 1417 regp->r_regs[R_S5] = framep->tf_regs[FRAME_S5]; 1418 regp->r_regs[R_S6] = framep->tf_regs[FRAME_S6]; 1419 regp->r_regs[R_A0] = framep->tf_regs[FRAME_A0]; 1420 regp->r_regs[R_A1] = framep->tf_regs[FRAME_A1]; 1421 regp->r_regs[R_A2] = framep->tf_regs[FRAME_A2]; 1422 regp->r_regs[R_A3] = framep->tf_regs[FRAME_A3]; 1423 regp->r_regs[R_A4] = framep->tf_regs[FRAME_A4]; 1424 regp->r_regs[R_A5] = framep->tf_regs[FRAME_A5]; 1425 regp->r_regs[R_T8] = framep->tf_regs[FRAME_T8]; 1426 regp->r_regs[R_T9] = framep->tf_regs[FRAME_T9]; 1427 regp->r_regs[R_T10] = framep->tf_regs[FRAME_T10]; 1428 regp->r_regs[R_T11] = framep->tf_regs[FRAME_T11]; 1429 regp->r_regs[R_RA] = framep->tf_regs[FRAME_RA]; 1430 regp->r_regs[R_T12] = framep->tf_regs[FRAME_T12]; 1431 regp->r_regs[R_AT] = framep->tf_regs[FRAME_AT]; 1432 regp->r_regs[R_GP] = framep->tf_regs[FRAME_GP]; 1433 /* regp->r_regs[R_SP] = framep->tf_regs[FRAME_SP]; XXX */ 1434 regp->r_regs[R_ZERO] = 0; 1435 } 1436 1437 void 1438 regtoframe(regp, framep) 1439 const struct reg *regp; 1440 struct trapframe *framep; 1441 { 1442 1443 framep->tf_regs[FRAME_V0] = regp->r_regs[R_V0]; 1444 framep->tf_regs[FRAME_T0] = regp->r_regs[R_T0]; 1445 framep->tf_regs[FRAME_T1] = regp->r_regs[R_T1]; 1446 framep->tf_regs[FRAME_T2] = regp->r_regs[R_T2]; 1447 framep->tf_regs[FRAME_T3] = regp->r_regs[R_T3]; 1448 framep->tf_regs[FRAME_T4] = regp->r_regs[R_T4]; 1449 framep->tf_regs[FRAME_T5] = regp->r_regs[R_T5]; 1450 framep->tf_regs[FRAME_T6] = regp->r_regs[R_T6]; 1451 framep->tf_regs[FRAME_T7] = regp->r_regs[R_T7]; 1452 framep->tf_regs[FRAME_S0] = regp->r_regs[R_S0]; 1453 framep->tf_regs[FRAME_S1] = regp->r_regs[R_S1]; 1454 framep->tf_regs[FRAME_S2] = regp->r_regs[R_S2]; 1455 framep->tf_regs[FRAME_S3] = regp->r_regs[R_S3]; 1456 framep->tf_regs[FRAME_S4] = regp->r_regs[R_S4]; 1457 framep->tf_regs[FRAME_S5] = regp->r_regs[R_S5]; 1458 framep->tf_regs[FRAME_S6] = regp->r_regs[R_S6]; 1459 framep->tf_regs[FRAME_A0] = regp->r_regs[R_A0]; 1460 framep->tf_regs[FRAME_A1] = regp->r_regs[R_A1]; 1461 framep->tf_regs[FRAME_A2] = regp->r_regs[R_A2]; 1462 framep->tf_regs[FRAME_A3] = regp->r_regs[R_A3]; 1463 framep->tf_regs[FRAME_A4] = regp->r_regs[R_A4]; 1464 framep->tf_regs[FRAME_A5] = regp->r_regs[R_A5]; 1465 framep->tf_regs[FRAME_T8] = regp->r_regs[R_T8]; 1466 framep->tf_regs[FRAME_T9] = regp->r_regs[R_T9]; 1467 framep->tf_regs[FRAME_T10] = regp->r_regs[R_T10]; 1468 framep->tf_regs[FRAME_T11] = regp->r_regs[R_T11]; 1469 framep->tf_regs[FRAME_RA] = regp->r_regs[R_RA]; 1470 framep->tf_regs[FRAME_T12] = regp->r_regs[R_T12]; 1471 framep->tf_regs[FRAME_AT] = regp->r_regs[R_AT]; 1472 framep->tf_regs[FRAME_GP] = regp->r_regs[R_GP]; 1473 /* framep->tf_regs[FRAME_SP] = regp->r_regs[R_SP]; XXX */ 1474 /* ??? = regp->r_regs[R_ZERO]; */ 1475 } 1476 1477 void 1478 printregs(regp) 1479 struct reg *regp; 1480 { 1481 int i; 1482 1483 for (i = 0; i < 32; i++) 1484 printf("R%d:\t0x%016lx%s", i, regp->r_regs[i], 1485 i & 1 ? "\n" : "\t"); 1486 } 1487 1488 void 1489 regdump(framep) 1490 struct trapframe *framep; 1491 { 1492 struct reg reg; 1493 1494 frametoreg(framep, ®); 1495 reg.r_regs[R_SP] = alpha_pal_rdusp(); 1496 1497 printf("REGISTERS:\n"); 1498 printregs(®); 1499 } 1500 1501 1502 /* 1503 * Send an interrupt to process. 1504 */ 1505 void 1506 sendsig(sig, mask, code) 1507 int sig; 1508 sigset_t *mask; 1509 u_long code; 1510 { 1511 struct lwp *l = curlwp; 1512 struct proc *p = l->l_proc; 1513 struct sigacts *ps = p->p_sigacts; 1514 struct sigcontext *scp, ksc; 1515 struct trapframe *frame; 1516 int onstack, fsize, rndfsize; 1517 sig_t catcher = SIGACTION(p, sig).sa_handler; 1518 1519 frame = l->l_md.md_tf; 1520 1521 /* Do we need to jump onto the signal stack? */ 1522 onstack = 1523 (p->p_sigctx.ps_sigstk.ss_flags & (SS_DISABLE | SS_ONSTACK)) == 0 && 1524 (SIGACTION(p, sig).sa_flags & SA_ONSTACK) != 0; 1525 1526 /* Allocate space for the signal handler context. */ 1527 fsize = sizeof(ksc); 1528 rndfsize = ((fsize + 15) / 16) * 16; 1529 1530 if (onstack) 1531 scp = (struct sigcontext *)((caddr_t)p->p_sigctx.ps_sigstk.ss_sp + 1532 p->p_sigctx.ps_sigstk.ss_size); 1533 else 1534 scp = (struct sigcontext *)(alpha_pal_rdusp()); 1535 scp = (struct sigcontext *)((caddr_t)scp - rndfsize); 1536 1537 #ifdef DEBUG 1538 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1539 printf("sendsig(%d): sig %d ssp %p usp %p\n", p->p_pid, 1540 sig, &onstack, scp); 1541 #endif 1542 1543 /* Build stack frame for signal trampoline. */ 1544 ksc.sc_pc = frame->tf_regs[FRAME_PC]; 1545 ksc.sc_ps = frame->tf_regs[FRAME_PS]; 1546 1547 /* Save register context. */ 1548 frametoreg(frame, (struct reg *)ksc.sc_regs); 1549 ksc.sc_regs[R_ZERO] = 0xACEDBADE; /* magic number */ 1550 ksc.sc_regs[R_SP] = alpha_pal_rdusp(); 1551 1552 /* save the floating-point state, if necessary, then copy it. */ 1553 if (l->l_addr->u_pcb.pcb_fpcpu != NULL) 1554 fpusave_proc(l, 1); 1555 ksc.sc_ownedfp = l->l_md.md_flags & MDP_FPUSED; 1556 memcpy((struct fpreg *)ksc.sc_fpregs, &l->l_addr->u_pcb.pcb_fp, 1557 sizeof(struct fpreg)); 1558 ksc.sc_fp_control = alpha_read_fp_c(l); 1559 memset(ksc.sc_reserved, 0, sizeof ksc.sc_reserved); /* XXX */ 1560 memset(ksc.sc_xxx, 0, sizeof ksc.sc_xxx); /* XXX */ 1561 1562 /* Save signal stack. */ 1563 ksc.sc_onstack = p->p_sigctx.ps_sigstk.ss_flags & SS_ONSTACK; 1564 1565 /* Save signal mask. */ 1566 ksc.sc_mask = *mask; 1567 1568 #ifdef COMPAT_13 1569 /* 1570 * XXX We always have to save an old style signal mask because 1571 * XXX we might be delivering a signal to a process which will 1572 * XXX escape from the signal in a non-standard way and invoke 1573 * XXX sigreturn() directly. 1574 */ 1575 { 1576 /* Note: it's a long in the stack frame. */ 1577 sigset13_t mask13; 1578 1579 native_sigset_to_sigset13(mask, &mask13); 1580 ksc.__sc_mask13 = mask13; 1581 } 1582 #endif 1583 1584 #ifdef COMPAT_OSF1 1585 /* 1586 * XXX Create an OSF/1-style sigcontext and associated goo. 1587 */ 1588 #endif 1589 1590 if (copyout(&ksc, (caddr_t)scp, fsize) != 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(%d): copyout failed on sig %d\n", 1598 p->p_pid, sig); 1599 #endif 1600 sigexit(l, SIGILL); 1601 /* NOTREACHED */ 1602 } 1603 #ifdef DEBUG 1604 if (sigdebug & SDB_FOLLOW) 1605 printf("sendsig(%d): sig %d scp %p code %lx\n", p->p_pid, sig, 1606 scp, code); 1607 #endif 1608 1609 /* 1610 * Set up the registers to directly invoke the signal handler. The 1611 * signal trampoline is then used to return from the signal. Note 1612 * the trampoline version numbers are coordinated with machine- 1613 * dependent code in libc. 1614 */ 1615 switch (ps->sa_sigdesc[sig].sd_vers) { 1616 #if 1 /* COMPAT_16 */ 1617 case 0: /* legacy on-stack sigtramp */ 1618 frame->tf_regs[FRAME_RA] = (u_int64_t)p->p_sigctx.ps_sigcode; 1619 break; 1620 #endif /* COMPAT_16 */ 1621 1622 case 1: 1623 frame->tf_regs[FRAME_RA] = 1624 (u_int64_t)ps->sa_sigdesc[sig].sd_tramp; 1625 break; 1626 1627 default: 1628 /* Don't know what trampoline version; kill it. */ 1629 sigexit(l, SIGILL); 1630 } 1631 frame->tf_regs[FRAME_PC] = (u_int64_t)catcher; 1632 frame->tf_regs[FRAME_A0] = sig; 1633 frame->tf_regs[FRAME_A1] = code; 1634 frame->tf_regs[FRAME_A2] = (u_int64_t)scp; 1635 frame->tf_regs[FRAME_T12] = (u_int64_t)catcher; 1636 alpha_pal_wrusp((unsigned long)scp); 1637 1638 /* Remember that we're now on the signal stack. */ 1639 if (onstack) 1640 p->p_sigctx.ps_sigstk.ss_flags |= SS_ONSTACK; 1641 1642 #ifdef DEBUG 1643 if (sigdebug & SDB_FOLLOW) 1644 printf("sendsig(%d): pc %lx, catcher %lx\n", p->p_pid, 1645 frame->tf_regs[FRAME_PC], frame->tf_regs[FRAME_A3]); 1646 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1647 printf("sendsig(%d): sig %d returns\n", 1648 p->p_pid, sig); 1649 #endif 1650 } 1651 1652 1653 void 1654 cpu_upcall(struct lwp *l, int type, int nevents, int ninterrupted, void *sas, void *ap, void *sp, sa_upcall_t upcall) 1655 { 1656 struct trapframe *tf; 1657 1658 tf = l->l_md.md_tf; 1659 1660 tf->tf_regs[FRAME_PC] = (u_int64_t)upcall; 1661 tf->tf_regs[FRAME_RA] = 0; 1662 tf->tf_regs[FRAME_A0] = type; 1663 tf->tf_regs[FRAME_A1] = (u_int64_t)sas; 1664 tf->tf_regs[FRAME_A2] = nevents; 1665 tf->tf_regs[FRAME_A3] = ninterrupted; 1666 tf->tf_regs[FRAME_A4] = (u_int64_t)ap; 1667 tf->tf_regs[FRAME_T12] = (u_int64_t)upcall; /* t12 is pv */ 1668 alpha_pal_wrusp((unsigned long)sp); 1669 } 1670 1671 /* 1672 * System call to cleanup state after a signal 1673 * has been taken. Reset signal mask and 1674 * stack state from context left by sendsig (above). 1675 * Return to previous pc and psl as specified by 1676 * context left by sendsig. Check carefully to 1677 * make sure that the user has not modified the 1678 * psl to gain improper privileges or to cause 1679 * a machine fault. 1680 */ 1681 /* ARGSUSED */ 1682 int 1683 sys___sigreturn14(l, v, retval) 1684 struct lwp *l; 1685 void *v; 1686 register_t *retval; 1687 { 1688 struct sys___sigreturn14_args /* { 1689 syscallarg(struct sigcontext *) sigcntxp; 1690 } */ *uap = v; 1691 struct sigcontext *scp, ksc; 1692 struct proc *p = l->l_proc; 1693 1694 /* 1695 * The trampoline code hands us the context. 1696 * It is unsafe to keep track of it ourselves, in the event that a 1697 * program jumps out of a signal handler. 1698 */ 1699 scp = SCARG(uap, sigcntxp); 1700 #ifdef DEBUG 1701 if (sigdebug & SDB_FOLLOW) 1702 printf("sigreturn: pid %d, scp %p\n", p->p_pid, scp); 1703 #endif 1704 if (ALIGN(scp) != (u_int64_t)scp) 1705 return (EINVAL); 1706 1707 if (copyin((caddr_t)scp, &ksc, sizeof(ksc)) != 0) 1708 return (EFAULT); 1709 1710 if (ksc.sc_regs[R_ZERO] != 0xACEDBADE) /* magic number */ 1711 return (EINVAL); 1712 1713 /* Restore register context. */ 1714 l->l_md.md_tf->tf_regs[FRAME_PC] = ksc.sc_pc; 1715 l->l_md.md_tf->tf_regs[FRAME_PS] = 1716 (ksc.sc_ps | ALPHA_PSL_USERSET) & ~ALPHA_PSL_USERCLR; 1717 1718 regtoframe((struct reg *)ksc.sc_regs, l->l_md.md_tf); 1719 alpha_pal_wrusp(ksc.sc_regs[R_SP]); 1720 1721 /* XXX ksc.sc_ownedfp ? */ 1722 if (l->l_addr->u_pcb.pcb_fpcpu != NULL) 1723 fpusave_proc(l, 0); 1724 memcpy(&l->l_addr->u_pcb.pcb_fp, (struct fpreg *)ksc.sc_fpregs, 1725 sizeof(struct fpreg)); 1726 l->l_addr->u_pcb.pcb_fp.fpr_cr = ksc.sc_fpcr; 1727 l->l_md.md_flags = ksc.sc_fp_control & MDP_FP_C; 1728 1729 /* Restore signal stack. */ 1730 if (ksc.sc_onstack & SS_ONSTACK) 1731 p->p_sigctx.ps_sigstk.ss_flags |= SS_ONSTACK; 1732 else 1733 p->p_sigctx.ps_sigstk.ss_flags &= ~SS_ONSTACK; 1734 1735 /* Restore signal mask. */ 1736 (void) sigprocmask1(p, SIG_SETMASK, &ksc.sc_mask, 0); 1737 1738 #ifdef DEBUG 1739 if (sigdebug & SDB_FOLLOW) 1740 printf("sigreturn(%d): returns\n", p->p_pid); 1741 #endif 1742 return (EJUSTRETURN); 1743 } 1744 1745 /* 1746 * machine dependent system variables. 1747 */ 1748 int 1749 cpu_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 1750 int *name; 1751 u_int namelen; 1752 void *oldp; 1753 size_t *oldlenp; 1754 void *newp; 1755 size_t newlen; 1756 struct proc *p; 1757 { 1758 dev_t consdev; 1759 1760 /* all sysctl names at this level are terminal */ 1761 if (namelen != 1) 1762 return (ENOTDIR); /* overloaded */ 1763 1764 switch (name[0]) { 1765 case CPU_CONSDEV: 1766 if (cn_tab != NULL) 1767 consdev = cn_tab->cn_dev; 1768 else 1769 consdev = NODEV; 1770 return (sysctl_rdstruct(oldp, oldlenp, newp, &consdev, 1771 sizeof consdev)); 1772 1773 case CPU_ROOT_DEVICE: 1774 return (sysctl_rdstring(oldp, oldlenp, newp, 1775 root_device->dv_xname)); 1776 1777 case CPU_UNALIGNED_PRINT: 1778 return (sysctl_int(oldp, oldlenp, newp, newlen, 1779 &alpha_unaligned_print)); 1780 1781 case CPU_UNALIGNED_FIX: 1782 return (sysctl_int(oldp, oldlenp, newp, newlen, 1783 &alpha_unaligned_fix)); 1784 1785 case CPU_UNALIGNED_SIGBUS: 1786 return (sysctl_int(oldp, oldlenp, newp, newlen, 1787 &alpha_unaligned_sigbus)); 1788 1789 case CPU_BOOTED_KERNEL: 1790 return (sysctl_rdstring(oldp, oldlenp, newp, 1791 bootinfo.booted_kernel)); 1792 1793 case CPU_FP_SYNC_COMPLETE: 1794 return (sysctl_int(oldp, oldlenp, newp, newlen, 1795 &alpha_fp_sync_complete)); 1796 1797 default: 1798 return (EOPNOTSUPP); 1799 } 1800 /* NOTREACHED */ 1801 } 1802 1803 /* 1804 * Set registers on exec. 1805 */ 1806 void 1807 setregs(l, pack, stack) 1808 register struct lwp *l; 1809 struct exec_package *pack; 1810 u_long stack; 1811 { 1812 struct trapframe *tfp = l->l_md.md_tf; 1813 #ifdef DEBUG 1814 int i; 1815 #endif 1816 1817 #ifdef DEBUG 1818 /* 1819 * Crash and dump, if the user requested it. 1820 */ 1821 if (boothowto & RB_DUMP) 1822 panic("crash requested by boot flags"); 1823 #endif 1824 1825 #ifdef DEBUG 1826 for (i = 0; i < FRAME_SIZE; i++) 1827 tfp->tf_regs[i] = 0xbabefacedeadbeef; 1828 #else 1829 memset(tfp->tf_regs, 0, FRAME_SIZE * sizeof tfp->tf_regs[0]); 1830 #endif 1831 memset(&l->l_addr->u_pcb.pcb_fp, 0, sizeof l->l_addr->u_pcb.pcb_fp); 1832 alpha_pal_wrusp(stack); 1833 tfp->tf_regs[FRAME_PS] = ALPHA_PSL_USERSET; 1834 tfp->tf_regs[FRAME_PC] = pack->ep_entry & ~3; 1835 1836 tfp->tf_regs[FRAME_A0] = stack; /* a0 = sp */ 1837 tfp->tf_regs[FRAME_A1] = 0; /* a1 = rtld cleanup */ 1838 tfp->tf_regs[FRAME_A2] = 0; /* a2 = rtld object */ 1839 tfp->tf_regs[FRAME_A3] = (u_int64_t)l->l_proc->p_psstr; /* a3 = ps_strings */ 1840 tfp->tf_regs[FRAME_T12] = tfp->tf_regs[FRAME_PC]; /* a.k.a. PV */ 1841 1842 l->l_md.md_flags &= ~MDP_FPUSED; 1843 if (__predict_true((l->l_md.md_flags & IEEE_INHERIT) == 0)) { 1844 l->l_md.md_flags &= ~MDP_FP_C; 1845 l->l_addr->u_pcb.pcb_fp.fpr_cr = FPCR_DYN(FP_RN); 1846 } 1847 if (l->l_addr->u_pcb.pcb_fpcpu != NULL) 1848 fpusave_proc(l, 0); 1849 } 1850 1851 /* 1852 * Release the FPU. 1853 */ 1854 void 1855 fpusave_cpu(struct cpu_info *ci, int save) 1856 { 1857 struct lwp *l; 1858 #if defined(MULTIPROCESSOR) 1859 int s; 1860 #endif 1861 1862 KDASSERT(ci == curcpu()); 1863 1864 #if defined(MULTIPROCESSOR) 1865 atomic_setbits_ulong(&ci->ci_flags, CPUF_FPUSAVE); 1866 #endif 1867 1868 l = ci->ci_fpcurlwp; 1869 if (l == NULL) 1870 goto out; 1871 1872 if (save) { 1873 alpha_pal_wrfen(1); 1874 savefpstate(&l->l_addr->u_pcb.pcb_fp); 1875 } 1876 1877 alpha_pal_wrfen(0); 1878 1879 FPCPU_LOCK(&l->l_addr->u_pcb, s); 1880 1881 l->l_addr->u_pcb.pcb_fpcpu = NULL; 1882 ci->ci_fpcurlwp = NULL; 1883 1884 FPCPU_UNLOCK(&l->l_addr->u_pcb, s); 1885 1886 out: 1887 #if defined(MULTIPROCESSOR) 1888 atomic_clearbits_ulong(&ci->ci_flags, CPUF_FPUSAVE); 1889 #endif 1890 return; 1891 } 1892 1893 /* 1894 * Synchronize FP state for this process. 1895 */ 1896 void 1897 fpusave_proc(struct lwp *l, int save) 1898 { 1899 struct cpu_info *ci = curcpu(); 1900 struct cpu_info *oci; 1901 #if defined(MULTIPROCESSOR) 1902 u_long ipi = save ? ALPHA_IPI_SYNCH_FPU : ALPHA_IPI_DISCARD_FPU; 1903 int s, spincount; 1904 #endif 1905 1906 KDASSERT(l->l_addr != NULL); 1907 KDASSERT(l->l_flag & L_INMEM); 1908 1909 FPCPU_LOCK(&l->l_addr->u_pcb, s); 1910 1911 oci = l->l_addr->u_pcb.pcb_fpcpu; 1912 if (oci == NULL) { 1913 FPCPU_UNLOCK(&l->l_addr->u_pcb, s); 1914 return; 1915 } 1916 1917 #if defined(MULTIPROCESSOR) 1918 if (oci == ci) { 1919 KASSERT(ci->ci_fpcurlwp == l); 1920 FPCPU_UNLOCK(&l->l_addr->u_pcb, s); 1921 fpusave_cpu(ci, save); 1922 return; 1923 } 1924 1925 KASSERT(oci->ci_fpcurlwp == l); 1926 alpha_send_ipi(oci->ci_cpuid, ipi); 1927 FPCPU_UNLOCK(&l->l_addr->u_pcb, s); 1928 1929 spincount = 0; 1930 while (l->l_addr->u_pcb.pcb_fpcpu != NULL) { 1931 spincount++; 1932 delay(1000); /* XXX */ 1933 if (spincount > 10000) 1934 panic("fpsave ipi didn't"); 1935 } 1936 #else 1937 KASSERT(ci->ci_fpcurlwp == l); 1938 FPCPU_UNLOCK(&l->l_addr->u_pcb, s); 1939 fpusave_cpu(ci, save); 1940 #endif /* MULTIPROCESSOR */ 1941 } 1942 1943 /* 1944 * Wait "n" microseconds. 1945 */ 1946 void 1947 delay(n) 1948 unsigned long n; 1949 { 1950 unsigned long pcc0, pcc1, curcycle, cycles, usec; 1951 1952 if (n == 0) 1953 return; 1954 1955 pcc0 = alpha_rpcc() & 0xffffffffUL; 1956 cycles = 0; 1957 usec = 0; 1958 1959 while (usec <= n) { 1960 /* 1961 * Get the next CPU cycle count- assumes that we cannot 1962 * have had more than one 32 bit overflow. 1963 */ 1964 pcc1 = alpha_rpcc() & 0xffffffffUL; 1965 if (pcc1 < pcc0) 1966 curcycle = (pcc1 + 0x100000000UL) - pcc0; 1967 else 1968 curcycle = pcc1 - pcc0; 1969 1970 /* 1971 * We now have the number of processor cycles since we 1972 * last checked. Add the current cycle count to the 1973 * running total. If it's over cycles_per_usec, increment 1974 * the usec counter. 1975 */ 1976 cycles += curcycle; 1977 while (cycles > cycles_per_usec) { 1978 usec++; 1979 cycles -= cycles_per_usec; 1980 } 1981 pcc0 = pcc1; 1982 } 1983 } 1984 1985 #ifdef EXEC_ECOFF 1986 void 1987 cpu_exec_ecoff_setregs(l, epp, stack) 1988 struct lwp *l; 1989 struct exec_package *epp; 1990 u_long stack; 1991 { 1992 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 1993 1994 l->l_md.md_tf->tf_regs[FRAME_GP] = execp->a.gp_value; 1995 } 1996 1997 /* 1998 * cpu_exec_ecoff_hook(): 1999 * cpu-dependent ECOFF format hook for execve(). 2000 * 2001 * Do any machine-dependent diddling of the exec package when doing ECOFF. 2002 * 2003 */ 2004 int 2005 cpu_exec_ecoff_probe(p, epp) 2006 struct proc *p; 2007 struct exec_package *epp; 2008 { 2009 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2010 int error; 2011 2012 if (execp->f.f_magic == ECOFF_MAGIC_NETBSD_ALPHA) 2013 error = 0; 2014 else 2015 error = ENOEXEC; 2016 2017 return (error); 2018 } 2019 #endif /* EXEC_ECOFF */ 2020 2021 int 2022 alpha_pa_access(pa) 2023 u_long pa; 2024 { 2025 int i; 2026 2027 for (i = 0; i < mem_cluster_cnt; i++) { 2028 if (pa < mem_clusters[i].start) 2029 continue; 2030 if ((pa - mem_clusters[i].start) >= 2031 (mem_clusters[i].size & ~PAGE_MASK)) 2032 continue; 2033 return (mem_clusters[i].size & PAGE_MASK); /* prot */ 2034 } 2035 2036 /* 2037 * Address is not a memory address. If we're secure, disallow 2038 * access. Otherwise, grant read/write. 2039 */ 2040 if (securelevel > 0) 2041 return (PROT_NONE); 2042 else 2043 return (PROT_READ | PROT_WRITE); 2044 } 2045 2046 /* XXX XXX BEGIN XXX XXX */ 2047 paddr_t alpha_XXX_dmamap_or; /* XXX */ 2048 /* XXX */ 2049 paddr_t /* XXX */ 2050 alpha_XXX_dmamap(v) /* XXX */ 2051 vaddr_t v; /* XXX */ 2052 { /* XXX */ 2053 /* XXX */ 2054 return (vtophys(v) | alpha_XXX_dmamap_or); /* XXX */ 2055 } /* XXX */ 2056 /* XXX XXX END XXX XXX */ 2057 2058 char * 2059 dot_conv(x) 2060 unsigned long x; 2061 { 2062 int i; 2063 char *xc; 2064 static int next; 2065 static char space[2][20]; 2066 2067 xc = space[next ^= 1] + sizeof space[0]; 2068 *--xc = '\0'; 2069 for (i = 0;; ++i) { 2070 if (i && (i & 3) == 0) 2071 *--xc = '.'; 2072 *--xc = "0123456789abcdef"[x & 0xf]; 2073 x >>= 4; 2074 if (x == 0) 2075 break; 2076 } 2077 return xc; 2078 } 2079 2080 void 2081 cpu_getmcontext(l, mcp, flags) 2082 struct lwp *l; 2083 mcontext_t *mcp; 2084 unsigned int *flags; 2085 { 2086 struct trapframe *frame = l->l_md.md_tf; 2087 __greg_t *gr = mcp->__gregs; 2088 __greg_t ras_pc; 2089 2090 /* Save register context. */ 2091 frametoreg(frame, (struct reg *)gr); 2092 /* XXX if there's a better, general way to get the USP of 2093 * an LWP that might or might not be curlwp, I'd like to know 2094 * about it. 2095 */ 2096 if (l == curlwp) { 2097 gr[_REG_SP] = alpha_pal_rdusp(); 2098 gr[_REG_UNIQUE] = alpha_pal_rdunique(); 2099 } else { 2100 gr[_REG_SP] = l->l_addr->u_pcb.pcb_hw.apcb_usp; 2101 gr[_REG_UNIQUE] = l->l_addr->u_pcb.pcb_hw.apcb_unique; 2102 } 2103 gr[_REG_PC] = frame->tf_regs[FRAME_PC]; 2104 gr[_REG_PS] = frame->tf_regs[FRAME_PS]; 2105 2106 if ((ras_pc = (__greg_t)ras_lookup(l->l_proc, 2107 (caddr_t) gr[_REG_PC])) != -1) 2108 gr[_REG_PC] = ras_pc; 2109 2110 *flags |= _UC_CPU | _UC_UNIQUE; 2111 2112 /* Save floating point register context, if any, and copy it. */ 2113 if (l->l_md.md_flags & MDP_FPUSED) { 2114 fpusave_proc(l, 1); 2115 (void)memcpy(&mcp->__fpregs, &l->l_addr->u_pcb.pcb_fp, 2116 sizeof (mcp->__fpregs)); 2117 mcp->__fpregs.__fp_fpcr = alpha_read_fp_c(l); 2118 *flags |= _UC_FPU; 2119 } 2120 } 2121 2122 2123 int 2124 cpu_setmcontext(l, mcp, flags) 2125 struct lwp *l; 2126 const mcontext_t *mcp; 2127 unsigned int flags; 2128 { 2129 struct trapframe *frame = l->l_md.md_tf; 2130 const __greg_t *gr = mcp->__gregs; 2131 2132 /* Restore register context, if any. */ 2133 if (flags & _UC_CPU) { 2134 /* Check for security violations first. */ 2135 if ((gr[_REG_PS] & ALPHA_PSL_USERSET) != ALPHA_PSL_USERSET || 2136 (gr[_REG_PS] & ALPHA_PSL_USERCLR) != 0) 2137 return (EINVAL); 2138 2139 regtoframe((struct reg *)gr, l->l_md.md_tf); 2140 if (l == curlwp) 2141 alpha_pal_wrusp(gr[_REG_SP]); 2142 else 2143 l->l_addr->u_pcb.pcb_hw.apcb_usp = gr[_REG_SP]; 2144 frame->tf_regs[FRAME_PC] = gr[_REG_PC]; 2145 frame->tf_regs[FRAME_PS] = gr[_REG_PS]; 2146 } 2147 if (flags & _UC_UNIQUE) { 2148 if (l == curlwp) 2149 alpha_pal_wrunique(gr[_REG_UNIQUE]); 2150 else 2151 l->l_addr->u_pcb.pcb_hw.apcb_unique = gr[_REG_UNIQUE]; 2152 } 2153 /* Restore floating point register context, if any. */ 2154 if (flags & _UC_FPU) { 2155 /* If we have an FP register context, get rid of it. */ 2156 if (l->l_addr->u_pcb.pcb_fpcpu != NULL) 2157 fpusave_proc(l, 0); 2158 (void)memcpy(&l->l_addr->u_pcb.pcb_fp, &mcp->__fpregs, 2159 sizeof (l->l_addr->u_pcb.pcb_fp)); 2160 l->l_md.md_flags = mcp->__fpregs.__fp_fpcr & MDP_FP_C; 2161 } 2162 2163 return (0); 2164 } 2165
Indexes created Fri Oct 03 02:09:57 GMT 2025