machdep.c revision 1.258
1 /* $NetBSD: machdep.c,v 1.258 2002/09/06 13:18:43 gehenna 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 1.258 2002/09/06 13:18:43 gehenna 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/map.h> 85 #include <sys/proc.h> 86 #include <sys/sched.h> 87 #include <sys/buf.h> 88 #include <sys/reboot.h> 89 #include <sys/device.h> 90 #include <sys/file.h> 91 #include <sys/malloc.h> 92 #include <sys/mbuf.h> 93 #include <sys/mman.h> 94 #include <sys/msgbuf.h> 95 #include <sys/ioctl.h> 96 #include <sys/tty.h> 97 #include <sys/user.h> 98 #include <sys/exec.h> 99 #include <sys/exec_ecoff.h> 100 #include <sys/core.h> 101 #include <sys/kcore.h> 102 #include <sys/conf.h> 103 #include <machine/kcore.h> 104 #include <machine/fpu.h> 105 106 #include <sys/mount.h> 107 #include <sys/syscallargs.h> 108 109 #include <uvm/uvm_extern.h> 110 #include <sys/sysctl.h> 111 112 #include <dev/cons.h> 113 114 #include <machine/autoconf.h> 115 #include <machine/cpu.h> 116 #include <machine/reg.h> 117 #include <machine/rpb.h> 118 #include <machine/prom.h> 119 #include <machine/cpuconf.h> 120 #include <machine/ieeefp.h> 121 122 #ifdef DDB 123 #include <machine/db_machdep.h> 124 #include <ddb/db_access.h> 125 #include <ddb/db_sym.h> 126 #include <ddb/db_extern.h> 127 #include <ddb/db_interface.h> 128 #endif 129 130 #ifdef KGDB 131 #include <sys/kgdb.h> 132 #endif 133 134 #ifdef DEBUG 135 #include <machine/sigdebug.h> 136 #endif 137 138 #include <machine/alpha.h> 139 140 struct vm_map *exec_map = NULL; 141 struct vm_map *mb_map = NULL; 142 struct vm_map *phys_map = NULL; 143 144 caddr_t msgbufaddr; 145 146 int maxmem; /* max memory per process */ 147 148 int totalphysmem; /* total amount of physical memory in system */ 149 int physmem; /* physical memory used by NetBSD + some rsvd */ 150 int resvmem; /* amount of memory reserved for PROM */ 151 int unusedmem; /* amount of memory for OS that we don't use */ 152 int unknownmem; /* amount of memory with an unknown use */ 153 154 int cputype; /* system type, from the RPB */ 155 156 int bootdev_debug = 0; /* patchable, or from DDB */ 157 158 /* 159 * XXX We need an address to which we can assign things so that they 160 * won't be optimized away because we didn't use the value. 161 */ 162 u_int32_t no_optimize; 163 164 /* the following is used externally (sysctl_hw) */ 165 char machine[] = MACHINE; /* from <machine/param.h> */ 166 char machine_arch[] = MACHINE_ARCH; /* from <machine/param.h> */ 167 char cpu_model[128]; 168 169 struct user *proc0paddr; 170 171 /* Number of machine cycles per microsecond */ 172 u_int64_t cycles_per_usec; 173 174 /* number of cpus in the box. really! */ 175 int ncpus; 176 177 struct bootinfo_kernel bootinfo; 178 179 /* For built-in TCDS */ 180 #if defined(DEC_3000_300) || defined(DEC_3000_500) 181 u_int8_t dec_3000_scsiid[2], dec_3000_scsifast[2]; 182 #endif 183 184 struct platform platform; 185 186 #ifdef DDB 187 /* start and end of kernel symbol table */ 188 void *ksym_start, *ksym_end; 189 #endif 190 191 /* for cpu_sysctl() */ 192 int alpha_unaligned_print = 1; /* warn about unaligned accesses */ 193 int alpha_unaligned_fix = 1; /* fix up unaligned accesses */ 194 int alpha_unaligned_sigbus = 0; /* don't SIGBUS on fixed-up accesses */ 195 int alpha_fp_sync_complete = 0; /* fp fixup if sync even without /s */ 196 197 /* 198 * XXX This should be dynamically sized, but we have the chicken-egg problem! 199 * XXX it should also be larger than it is, because not all of the mddt 200 * XXX clusters end up being used for VM. 201 */ 202 phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX]; /* low size bits overloaded */ 203 int mem_cluster_cnt; 204 205 int cpu_dump __P((void)); 206 int cpu_dumpsize __P((void)); 207 u_long cpu_dump_mempagecnt __P((void)); 208 void dumpsys __P((void)); 209 void identifycpu __P((void)); 210 void printregs __P((struct reg *)); 211 212 void 213 alpha_init(pfn, ptb, bim, bip, biv) 214 u_long pfn; /* first free PFN number */ 215 u_long ptb; /* PFN of current level 1 page table */ 216 u_long bim; /* bootinfo magic */ 217 u_long bip; /* bootinfo pointer */ 218 u_long biv; /* bootinfo version */ 219 { 220 extern char kernel_text[], _end[]; 221 struct mddt *mddtp; 222 struct mddt_cluster *memc; 223 int i, mddtweird; 224 struct vm_physseg *vps; 225 vaddr_t kernstart, kernend; 226 paddr_t kernstartpfn, kernendpfn, pfn0, pfn1; 227 vsize_t size; 228 cpuid_t cpu_id; 229 struct cpu_info *ci; 230 char *p; 231 caddr_t v; 232 const char *bootinfo_msg; 233 const struct cpuinit *c; 234 235 /* NO OUTPUT ALLOWED UNTIL FURTHER NOTICE */ 236 237 /* 238 * Turn off interrupts (not mchecks) and floating point. 239 * Make sure the instruction and data streams are consistent. 240 */ 241 (void)alpha_pal_swpipl(ALPHA_PSL_IPL_HIGH); 242 alpha_pal_wrfen(0); 243 ALPHA_TBIA(); 244 alpha_pal_imb(); 245 246 /* Initialize the SCB. */ 247 scb_init(); 248 249 cpu_id = cpu_number(); 250 251 #if defined(MULTIPROCESSOR) 252 /* 253 * Set our SysValue to the address of our cpu_info structure. 254 * Secondary processors do this in their spinup trampoline. 255 */ 256 alpha_pal_wrval((u_long)&cpu_info_primary); 257 cpu_info[cpu_id] = &cpu_info_primary; 258 #endif 259 260 ci = curcpu(); 261 ci->ci_cpuid = cpu_id; 262 263 /* 264 * Get critical system information (if possible, from the 265 * information provided by the boot program). 266 */ 267 bootinfo_msg = NULL; 268 if (bim == BOOTINFO_MAGIC) { 269 if (biv == 0) { /* backward compat */ 270 biv = *(u_long *)bip; 271 bip += 8; 272 } 273 switch (biv) { 274 case 1: { 275 struct bootinfo_v1 *v1p = (struct bootinfo_v1 *)bip; 276 277 bootinfo.ssym = v1p->ssym; 278 bootinfo.esym = v1p->esym; 279 /* hwrpb may not be provided by boot block in v1 */ 280 if (v1p->hwrpb != NULL) { 281 bootinfo.hwrpb_phys = 282 ((struct rpb *)v1p->hwrpb)->rpb_phys; 283 bootinfo.hwrpb_size = v1p->hwrpbsize; 284 } else { 285 bootinfo.hwrpb_phys = 286 ((struct rpb *)HWRPB_ADDR)->rpb_phys; 287 bootinfo.hwrpb_size = 288 ((struct rpb *)HWRPB_ADDR)->rpb_size; 289 } 290 memcpy(bootinfo.boot_flags, v1p->boot_flags, 291 min(sizeof v1p->boot_flags, 292 sizeof bootinfo.boot_flags)); 293 memcpy(bootinfo.booted_kernel, v1p->booted_kernel, 294 min(sizeof v1p->booted_kernel, 295 sizeof bootinfo.booted_kernel)); 296 /* booted dev not provided in bootinfo */ 297 init_prom_interface((struct rpb *) 298 ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys)); 299 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 300 sizeof bootinfo.booted_dev); 301 break; 302 } 303 default: 304 bootinfo_msg = "unknown bootinfo version"; 305 goto nobootinfo; 306 } 307 } else { 308 bootinfo_msg = "boot program did not pass bootinfo"; 309 nobootinfo: 310 bootinfo.ssym = (u_long)_end; 311 bootinfo.esym = (u_long)_end; 312 bootinfo.hwrpb_phys = ((struct rpb *)HWRPB_ADDR)->rpb_phys; 313 bootinfo.hwrpb_size = ((struct rpb *)HWRPB_ADDR)->rpb_size; 314 init_prom_interface((struct rpb *)HWRPB_ADDR); 315 prom_getenv(PROM_E_BOOTED_OSFLAGS, bootinfo.boot_flags, 316 sizeof bootinfo.boot_flags); 317 prom_getenv(PROM_E_BOOTED_FILE, bootinfo.booted_kernel, 318 sizeof bootinfo.booted_kernel); 319 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 320 sizeof bootinfo.booted_dev); 321 } 322 323 /* 324 * Initialize the kernel's mapping of the RPB. It's needed for 325 * lots of things. 326 */ 327 hwrpb = (struct rpb *)ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys); 328 329 #if defined(DEC_3000_300) || defined(DEC_3000_500) 330 if (hwrpb->rpb_type == ST_DEC_3000_300 || 331 hwrpb->rpb_type == ST_DEC_3000_500) { 332 prom_getenv(PROM_E_SCSIID, dec_3000_scsiid, 333 sizeof(dec_3000_scsiid)); 334 prom_getenv(PROM_E_SCSIFAST, dec_3000_scsifast, 335 sizeof(dec_3000_scsifast)); 336 } 337 #endif 338 339 /* 340 * Remember how many cycles there are per microsecond, 341 * so that we can use delay(). Round up, for safety. 342 */ 343 cycles_per_usec = (hwrpb->rpb_cc_freq + 999999) / 1000000; 344 345 /* 346 * Initialize the (temporary) bootstrap console interface, so 347 * we can use printf until the VM system starts being setup. 348 * The real console is initialized before then. 349 */ 350 init_bootstrap_console(); 351 352 /* OUTPUT NOW ALLOWED */ 353 354 /* delayed from above */ 355 if (bootinfo_msg) 356 printf("WARNING: %s (0x%lx, 0x%lx, 0x%lx)\n", 357 bootinfo_msg, bim, bip, biv); 358 359 /* Initialize the trap vectors on the primary processor. */ 360 trap_init(); 361 362 /* 363 * find out this system's page size 364 */ 365 PAGE_SIZE = hwrpb->rpb_page_size; 366 if (PAGE_SIZE != 8192) 367 panic("page size %d != 8192?!", PAGE_SIZE); 368 369 /* 370 * Initialize PAGE_SIZE-dependent variables. 371 */ 372 uvm_setpagesize(); 373 374 /* 375 * Find out what hardware we're on, and do basic initialization. 376 */ 377 cputype = hwrpb->rpb_type; 378 if (cputype < 0) { 379 /* 380 * At least some white-box systems have SRM which 381 * reports a systype that's the negative of their 382 * blue-box counterpart. 383 */ 384 cputype = -cputype; 385 } 386 c = platform_lookup(cputype); 387 if (c == NULL) { 388 platform_not_supported(); 389 /* NOTREACHED */ 390 } 391 (*c->init)(); 392 strcpy(cpu_model, platform.model); 393 394 /* 395 * Initialize the real console, so that the bootstrap console is 396 * no longer necessary. 397 */ 398 (*platform.cons_init)(); 399 400 #ifdef DIAGNOSTIC 401 /* Paranoid sanity checking */ 402 403 /* We should always be running on the primary. */ 404 assert(hwrpb->rpb_primary_cpu_id == cpu_id); 405 406 /* 407 * On single-CPU systypes, the primary should always be CPU 0, 408 * except on Alpha 8200 systems where the CPU id is related 409 * to the VID, which is related to the Turbo Laser node id. 410 */ 411 if (cputype != ST_DEC_21000) 412 assert(hwrpb->rpb_primary_cpu_id == 0); 413 #endif 414 415 /* NO MORE FIRMWARE ACCESS ALLOWED */ 416 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 417 /* 418 * XXX (unless _PMAP_MAY_USE_PROM_CONSOLE is defined and 419 * XXX pmap_uses_prom_console() evaluates to non-zero.) 420 */ 421 #endif 422 423 /* 424 * Find the beginning and end of the kernel (and leave a 425 * bit of space before the beginning for the bootstrap 426 * stack). 427 */ 428 kernstart = trunc_page((vaddr_t)kernel_text) - 2 * PAGE_SIZE; 429 #ifdef DDB 430 ksym_start = (void *)bootinfo.ssym; 431 ksym_end = (void *)bootinfo.esym; 432 kernend = (vaddr_t)round_page((vaddr_t)ksym_end); 433 #else 434 kernend = (vaddr_t)round_page((vaddr_t)_end); 435 #endif 436 437 kernstartpfn = atop(ALPHA_K0SEG_TO_PHYS(kernstart)); 438 kernendpfn = atop(ALPHA_K0SEG_TO_PHYS(kernend)); 439 440 /* 441 * Find out how much memory is available, by looking at 442 * the memory cluster descriptors. This also tries to do 443 * its best to detect things things that have never been seen 444 * before... 445 */ 446 mddtp = (struct mddt *)(((caddr_t)hwrpb) + hwrpb->rpb_memdat_off); 447 448 /* MDDT SANITY CHECKING */ 449 mddtweird = 0; 450 if (mddtp->mddt_cluster_cnt < 2) { 451 mddtweird = 1; 452 printf("WARNING: weird number of mem clusters: %lu\n", 453 mddtp->mddt_cluster_cnt); 454 } 455 456 #if 0 457 printf("Memory cluster count: %d\n", mddtp->mddt_cluster_cnt); 458 #endif 459 460 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 461 memc = &mddtp->mddt_clusters[i]; 462 #if 0 463 printf("MEMC %d: pfn 0x%lx cnt 0x%lx usage 0x%lx\n", i, 464 memc->mddt_pfn, memc->mddt_pg_cnt, memc->mddt_usage); 465 #endif 466 totalphysmem += memc->mddt_pg_cnt; 467 if (mem_cluster_cnt < VM_PHYSSEG_MAX) { /* XXX */ 468 mem_clusters[mem_cluster_cnt].start = 469 ptoa(memc->mddt_pfn); 470 mem_clusters[mem_cluster_cnt].size = 471 ptoa(memc->mddt_pg_cnt); 472 if (memc->mddt_usage & MDDT_mbz || 473 memc->mddt_usage & MDDT_NONVOLATILE || /* XXX */ 474 memc->mddt_usage & MDDT_PALCODE) 475 mem_clusters[mem_cluster_cnt].size |= 476 PROT_READ; 477 else 478 mem_clusters[mem_cluster_cnt].size |= 479 PROT_READ | PROT_WRITE | PROT_EXEC; 480 mem_cluster_cnt++; 481 } 482 483 if (memc->mddt_usage & MDDT_mbz) { 484 mddtweird = 1; 485 printf("WARNING: mem cluster %d has weird " 486 "usage 0x%lx\n", i, memc->mddt_usage); 487 unknownmem += memc->mddt_pg_cnt; 488 continue; 489 } 490 if (memc->mddt_usage & MDDT_NONVOLATILE) { 491 /* XXX should handle these... */ 492 printf("WARNING: skipping non-volatile mem " 493 "cluster %d\n", i); 494 unusedmem += memc->mddt_pg_cnt; 495 continue; 496 } 497 if (memc->mddt_usage & MDDT_PALCODE) { 498 resvmem += memc->mddt_pg_cnt; 499 continue; 500 } 501 502 /* 503 * We have a memory cluster available for system 504 * software use. We must determine if this cluster 505 * holds the kernel. 506 */ 507 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 508 /* 509 * XXX If the kernel uses the PROM console, we only use the 510 * XXX memory after the kernel in the first system segment, 511 * XXX to avoid clobbering prom mapping, data, etc. 512 */ 513 if (!pmap_uses_prom_console() || physmem == 0) { 514 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 515 physmem += memc->mddt_pg_cnt; 516 pfn0 = memc->mddt_pfn; 517 pfn1 = memc->mddt_pfn + memc->mddt_pg_cnt; 518 if (pfn0 <= kernstartpfn && kernendpfn <= pfn1) { 519 /* 520 * Must compute the location of the kernel 521 * within the segment. 522 */ 523 #if 0 524 printf("Cluster %d contains kernel\n", i); 525 #endif 526 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 527 if (!pmap_uses_prom_console()) { 528 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 529 if (pfn0 < kernstartpfn) { 530 /* 531 * There is a chunk before the kernel. 532 */ 533 #if 0 534 printf("Loading chunk before kernel: " 535 "0x%lx / 0x%lx\n", pfn0, kernstartpfn); 536 #endif 537 uvm_page_physload(pfn0, kernstartpfn, 538 pfn0, kernstartpfn, VM_FREELIST_DEFAULT); 539 } 540 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 541 } 542 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 543 if (kernendpfn < pfn1) { 544 /* 545 * There is a chunk after the kernel. 546 */ 547 #if 0 548 printf("Loading chunk after kernel: " 549 "0x%lx / 0x%lx\n", kernendpfn, pfn1); 550 #endif 551 uvm_page_physload(kernendpfn, pfn1, 552 kernendpfn, pfn1, VM_FREELIST_DEFAULT); 553 } 554 } else { 555 /* 556 * Just load this cluster as one chunk. 557 */ 558 #if 0 559 printf("Loading cluster %d: 0x%lx / 0x%lx\n", i, 560 pfn0, pfn1); 561 #endif 562 uvm_page_physload(pfn0, pfn1, pfn0, pfn1, 563 VM_FREELIST_DEFAULT); 564 } 565 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 566 } 567 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 568 } 569 570 /* 571 * Dump out the MDDT if it looks odd... 572 */ 573 if (mddtweird) { 574 printf("\n"); 575 printf("complete memory cluster information:\n"); 576 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 577 printf("mddt %d:\n", i); 578 printf("\tpfn %lx\n", 579 mddtp->mddt_clusters[i].mddt_pfn); 580 printf("\tcnt %lx\n", 581 mddtp->mddt_clusters[i].mddt_pg_cnt); 582 printf("\ttest %lx\n", 583 mddtp->mddt_clusters[i].mddt_pg_test); 584 printf("\tbva %lx\n", 585 mddtp->mddt_clusters[i].mddt_v_bitaddr); 586 printf("\tbpa %lx\n", 587 mddtp->mddt_clusters[i].mddt_p_bitaddr); 588 printf("\tbcksum %lx\n", 589 mddtp->mddt_clusters[i].mddt_bit_cksum); 590 printf("\tusage %lx\n", 591 mddtp->mddt_clusters[i].mddt_usage); 592 } 593 printf("\n"); 594 } 595 596 if (totalphysmem == 0) 597 panic("can't happen: system seems to have no memory!"); 598 maxmem = physmem; 599 #if 0 600 printf("totalphysmem = %d\n", totalphysmem); 601 printf("physmem = %d\n", physmem); 602 printf("resvmem = %d\n", resvmem); 603 printf("unusedmem = %d\n", unusedmem); 604 printf("unknownmem = %d\n", unknownmem); 605 #endif 606 607 /* 608 * Initialize error message buffer (at end of core). 609 */ 610 { 611 vsize_t sz = (vsize_t)round_page(MSGBUFSIZE); 612 vsize_t reqsz = sz; 613 614 vps = &vm_physmem[vm_nphysseg - 1]; 615 616 /* shrink so that it'll fit in the last segment */ 617 if ((vps->avail_end - vps->avail_start) < atop(sz)) 618 sz = ptoa(vps->avail_end - vps->avail_start); 619 620 vps->end -= atop(sz); 621 vps->avail_end -= atop(sz); 622 msgbufaddr = (caddr_t) ALPHA_PHYS_TO_K0SEG(ptoa(vps->end)); 623 initmsgbuf(msgbufaddr, sz); 624 625 /* Remove the last segment if it now has no pages. */ 626 if (vps->start == vps->end) 627 vm_nphysseg--; 628 629 /* warn if the message buffer had to be shrunk */ 630 if (sz != reqsz) 631 printf("WARNING: %ld bytes not available for msgbuf " 632 "in last cluster (%ld used)\n", reqsz, sz); 633 634 } 635 636 /* 637 * NOTE: It is safe to use uvm_pageboot_alloc() before 638 * pmap_bootstrap() because our pmap_virtual_space() 639 * returns compile-time constants. 640 */ 641 642 /* 643 * Init mapping for u page(s) for proc 0 644 */ 645 proc0.p_addr = proc0paddr = 646 (struct user *)uvm_pageboot_alloc(UPAGES * PAGE_SIZE); 647 648 /* 649 * Allocate space for system data structures. These data structures 650 * are allocated here instead of cpu_startup() because physical 651 * memory is directly addressable. We don't have to map these into 652 * virtual address space. 653 */ 654 size = (vsize_t)allocsys(NULL, NULL); 655 v = (caddr_t)uvm_pageboot_alloc(size); 656 if ((allocsys(v, NULL) - v) != size) 657 panic("alpha_init: table size inconsistency"); 658 659 /* 660 * Initialize the virtual memory system, and set the 661 * page table base register in proc 0's PCB. 662 */ 663 pmap_bootstrap(ALPHA_PHYS_TO_K0SEG(ptb << PGSHIFT), 664 hwrpb->rpb_max_asn, hwrpb->rpb_pcs_cnt); 665 666 /* 667 * Initialize the rest of proc 0's PCB, and cache its physical 668 * address. 669 */ 670 proc0.p_md.md_pcbpaddr = 671 (struct pcb *)ALPHA_K0SEG_TO_PHYS((vaddr_t)&proc0paddr->u_pcb); 672 673 /* 674 * Set the kernel sp, reserving space for an (empty) trapframe, 675 * and make proc0's trapframe pointer point to it for sanity. 676 */ 677 proc0paddr->u_pcb.pcb_hw.apcb_ksp = 678 (u_int64_t)proc0paddr + USPACE - sizeof(struct trapframe); 679 proc0.p_md.md_tf = 680 (struct trapframe *)proc0paddr->u_pcb.pcb_hw.apcb_ksp; 681 simple_lock_init(&proc0paddr->u_pcb.pcb_fpcpu_slock); 682 683 /* 684 * Initialize the primary CPU's idle PCB to proc0's. In a 685 * MULTIPROCESSOR configuration, each CPU will later get 686 * its own idle PCB when autoconfiguration runs. 687 */ 688 ci->ci_idle_pcb = &proc0paddr->u_pcb; 689 ci->ci_idle_pcb_paddr = (u_long)proc0.p_md.md_pcbpaddr; 690 691 /* Indicate that proc0 has a CPU. */ 692 proc0.p_cpu = ci; 693 694 /* 695 * Look at arguments passed to us and compute boothowto. 696 */ 697 698 boothowto = RB_SINGLE; 699 #ifdef KADB 700 boothowto |= RB_KDB; 701 #endif 702 for (p = bootinfo.boot_flags; p && *p != '\0'; p++) { 703 /* 704 * Note that we'd really like to differentiate case here, 705 * but the Alpha AXP Architecture Reference Manual 706 * says that we shouldn't. 707 */ 708 switch (*p) { 709 case 'a': /* autoboot */ 710 case 'A': 711 boothowto &= ~RB_SINGLE; 712 break; 713 714 #ifdef DEBUG 715 case 'c': /* crash dump immediately after autoconfig */ 716 case 'C': 717 boothowto |= RB_DUMP; 718 break; 719 #endif 720 721 #if defined(KGDB) || defined(DDB) 722 case 'd': /* break into the kernel debugger ASAP */ 723 case 'D': 724 boothowto |= RB_KDB; 725 break; 726 #endif 727 728 case 'h': /* always halt, never reboot */ 729 case 'H': 730 boothowto |= RB_HALT; 731 break; 732 733 #if 0 734 case 'm': /* mini root present in memory */ 735 case 'M': 736 boothowto |= RB_MINIROOT; 737 break; 738 #endif 739 740 case 'n': /* askname */ 741 case 'N': 742 boothowto |= RB_ASKNAME; 743 break; 744 745 case 's': /* single-user (default, supported for sanity) */ 746 case 'S': 747 boothowto |= RB_SINGLE; 748 break; 749 750 case 'q': /* quiet boot */ 751 case 'Q': 752 boothowto |= AB_QUIET; 753 break; 754 755 case 'v': /* verbose boot */ 756 case 'V': 757 boothowto |= AB_VERBOSE; 758 break; 759 760 case '-': 761 /* 762 * Just ignore this. It's not required, but it's 763 * common for it to be passed regardless. 764 */ 765 break; 766 767 default: 768 printf("Unrecognized boot flag '%c'.\n", *p); 769 break; 770 } 771 } 772 773 774 /* 775 * Figure out the number of cpus in the box, from RPB fields. 776 * Really. We mean it. 777 */ 778 for (i = 0; i < hwrpb->rpb_pcs_cnt; i++) { 779 struct pcs *pcsp; 780 781 pcsp = LOCATE_PCS(hwrpb, i); 782 if ((pcsp->pcs_flags & PCS_PP) != 0) 783 ncpus++; 784 } 785 786 /* 787 * Initialize debuggers, and break into them if appropriate. 788 */ 789 #ifdef DDB 790 ddb_init((int)((u_int64_t)ksym_end - (u_int64_t)ksym_start), 791 ksym_start, ksym_end); 792 #endif 793 794 if (boothowto & RB_KDB) { 795 #if defined(KGDB) 796 kgdb_debug_init = 1; 797 kgdb_connect(1); 798 #elif defined(DDB) 799 Debugger(); 800 #endif 801 } 802 803 /* 804 * Figure out our clock frequency, from RPB fields. 805 */ 806 hz = hwrpb->rpb_intr_freq >> 12; 807 if (!(60 <= hz && hz <= 10240)) { 808 hz = 1024; 809 #ifdef DIAGNOSTIC 810 printf("WARNING: unbelievable rpb_intr_freq: %ld (%d hz)\n", 811 hwrpb->rpb_intr_freq, hz); 812 #endif 813 } 814 } 815 816 void 817 consinit() 818 { 819 820 /* 821 * Everything related to console initialization is done 822 * in alpha_init(). 823 */ 824 #if defined(DIAGNOSTIC) && defined(_PMAP_MAY_USE_PROM_CONSOLE) 825 printf("consinit: %susing prom console\n", 826 pmap_uses_prom_console() ? "" : "not "); 827 #endif 828 } 829 830 #include "pckbc.h" 831 #include "pckbd.h" 832 #if (NPCKBC > 0) && (NPCKBD == 0) 833 834 #include <dev/ic/pckbcvar.h> 835 836 /* 837 * This is called by the pbkbc driver if no pckbd is configured. 838 * On the i386, it is used to glue in the old, deprecated console 839 * code. On the Alpha, it does nothing. 840 */ 841 int 842 pckbc_machdep_cnattach(kbctag, kbcslot) 843 pckbc_tag_t kbctag; 844 pckbc_slot_t kbcslot; 845 { 846 847 return (ENXIO); 848 } 849 #endif /* NPCKBC > 0 && NPCKBD == 0 */ 850 851 void 852 cpu_startup() 853 { 854 u_int i, base, residual; 855 vaddr_t minaddr, maxaddr; 856 vsize_t size; 857 char pbuf[9]; 858 #if defined(DEBUG) 859 extern int pmapdebug; 860 int opmapdebug = pmapdebug; 861 862 pmapdebug = 0; 863 #endif 864 865 /* 866 * Good {morning,afternoon,evening,night}. 867 */ 868 printf(version); 869 identifycpu(); 870 format_bytes(pbuf, sizeof(pbuf), ptoa(totalphysmem)); 871 printf("total memory = %s\n", pbuf); 872 format_bytes(pbuf, sizeof(pbuf), ptoa(resvmem)); 873 printf("(%s reserved for PROM, ", pbuf); 874 format_bytes(pbuf, sizeof(pbuf), ptoa(physmem)); 875 printf("%s used by NetBSD)\n", pbuf); 876 if (unusedmem) { 877 format_bytes(pbuf, sizeof(pbuf), ptoa(unusedmem)); 878 printf("WARNING: unused memory = %s\n", pbuf); 879 } 880 if (unknownmem) { 881 format_bytes(pbuf, sizeof(pbuf), ptoa(unknownmem)); 882 printf("WARNING: %s of memory with unknown purpose\n", pbuf); 883 } 884 885 /* 886 * Allocate virtual address space for file I/O buffers. 887 * Note they are different than the array of headers, 'buf', 888 * and usually occupy more virtual memory than physical. 889 */ 890 size = MAXBSIZE * nbuf; 891 if (uvm_map(kernel_map, (vaddr_t *) &buffers, round_page(size), 892 NULL, UVM_UNKNOWN_OFFSET, 0, 893 UVM_MAPFLAG(UVM_PROT_NONE, UVM_PROT_NONE, UVM_INH_NONE, 894 UVM_ADV_NORMAL, 0)) != 0) 895 panic("startup: cannot allocate VM for buffers"); 896 base = bufpages / nbuf; 897 residual = bufpages % nbuf; 898 for (i = 0; i < nbuf; i++) { 899 vsize_t curbufsize; 900 vaddr_t curbuf; 901 struct vm_page *pg; 902 903 /* 904 * Each buffer has MAXBSIZE bytes of VM space allocated. Of 905 * that MAXBSIZE space, we allocate and map (base+1) pages 906 * for the first "residual" buffers, and then we allocate 907 * "base" pages for the rest. 908 */ 909 curbuf = (vaddr_t) buffers + (i * MAXBSIZE); 910 curbufsize = NBPG * ((i < residual) ? (base+1) : base); 911 912 while (curbufsize) { 913 pg = uvm_pagealloc(NULL, 0, NULL, 0); 914 if (pg == NULL) 915 panic("cpu_startup: not enough memory for " 916 "buffer cache"); 917 pmap_kenter_pa(curbuf, VM_PAGE_TO_PHYS(pg), 918 VM_PROT_READ|VM_PROT_WRITE); 919 curbuf += PAGE_SIZE; 920 curbufsize -= PAGE_SIZE; 921 } 922 } 923 pmap_update(pmap_kernel()); 924 925 /* 926 * Allocate a submap for exec arguments. This map effectively 927 * limits the number of processes exec'ing at any time. 928 */ 929 exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 930 16 * NCARGS, VM_MAP_PAGEABLE, FALSE, NULL); 931 932 /* 933 * Allocate a submap for physio 934 */ 935 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 936 VM_PHYS_SIZE, 0, FALSE, NULL); 937 938 /* 939 * No need to allocate an mbuf cluster submap. Mbuf clusters 940 * are allocated via the pool allocator, and we use K0SEG to 941 * map those pages. 942 */ 943 944 #if defined(DEBUG) 945 pmapdebug = opmapdebug; 946 #endif 947 format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 948 printf("avail memory = %s\n", pbuf); 949 #if 0 950 { 951 extern u_long pmap_pages_stolen; 952 953 format_bytes(pbuf, sizeof(pbuf), pmap_pages_stolen * PAGE_SIZE); 954 printf("stolen memory for VM structures = %s\n", pbuf); 955 } 956 #endif 957 format_bytes(pbuf, sizeof(pbuf), bufpages * NBPG); 958 printf("using %u buffers containing %s of memory\n", nbuf, pbuf); 959 960 /* 961 * Set up buffers, so they can be used to read disk labels. 962 */ 963 bufinit(); 964 965 /* 966 * Set up the HWPCB so that it's safe to configure secondary 967 * CPUs. 968 */ 969 hwrpb_primary_init(); 970 } 971 972 /* 973 * Retrieve the platform name from the DSR. 974 */ 975 const char * 976 alpha_dsr_sysname() 977 { 978 struct dsrdb *dsr; 979 const char *sysname; 980 981 /* 982 * DSR does not exist on early HWRPB versions. 983 */ 984 if (hwrpb->rpb_version < HWRPB_DSRDB_MINVERS) 985 return (NULL); 986 987 dsr = (struct dsrdb *)(((caddr_t)hwrpb) + hwrpb->rpb_dsrdb_off); 988 sysname = (const char *)((caddr_t)dsr + (dsr->dsr_sysname_off + 989 sizeof(u_int64_t))); 990 return (sysname); 991 } 992 993 /* 994 * Lookup the system specified system variation in the provided table, 995 * returning the model string on match. 996 */ 997 const char * 998 alpha_variation_name(variation, avtp) 999 u_int64_t variation; 1000 const struct alpha_variation_table *avtp; 1001 { 1002 int i; 1003 1004 for (i = 0; avtp[i].avt_model != NULL; i++) 1005 if (avtp[i].avt_variation == variation) 1006 return (avtp[i].avt_model); 1007 return (NULL); 1008 } 1009 1010 /* 1011 * Generate a default platform name based for unknown system variations. 1012 */ 1013 const char * 1014 alpha_unknown_sysname() 1015 { 1016 static char s[128]; /* safe size */ 1017 1018 sprintf(s, "%s family, unknown model variation 0x%lx", 1019 platform.family, hwrpb->rpb_variation & SV_ST_MASK); 1020 return ((const char *)s); 1021 } 1022 1023 void 1024 identifycpu() 1025 { 1026 char *s; 1027 int i; 1028 1029 /* 1030 * print out CPU identification information. 1031 */ 1032 printf("%s", cpu_model); 1033 for(s = cpu_model; *s; ++s) 1034 if(strncasecmp(s, "MHz", 3) == 0) 1035 goto skipMHz; 1036 printf(", %ldMHz", hwrpb->rpb_cc_freq / 1000000); 1037 skipMHz: 1038 printf(", s/n "); 1039 for (i = 0; i < 10; i++) 1040 printf("%c", hwrpb->rpb_ssn[i]); 1041 printf("\n"); 1042 printf("%ld byte page size, %d processor%s.\n", 1043 hwrpb->rpb_page_size, ncpus, ncpus == 1 ? "" : "s"); 1044 #if 0 1045 /* this isn't defined for any systems that we run on? */ 1046 printf("serial number 0x%lx 0x%lx\n", 1047 ((long *)hwrpb->rpb_ssn)[0], ((long *)hwrpb->rpb_ssn)[1]); 1048 1049 /* and these aren't particularly useful! */ 1050 printf("variation: 0x%lx, revision 0x%lx\n", 1051 hwrpb->rpb_variation, *(long *)hwrpb->rpb_revision); 1052 #endif 1053 } 1054 1055 int waittime = -1; 1056 struct pcb dumppcb; 1057 1058 void 1059 cpu_reboot(howto, bootstr) 1060 int howto; 1061 char *bootstr; 1062 { 1063 #if defined(MULTIPROCESSOR) 1064 u_long cpu_id = cpu_number(); 1065 u_long wait_mask = (1UL << cpu_id) | 1066 (1UL << hwrpb->rpb_primary_cpu_id); 1067 int i; 1068 #endif 1069 1070 /* If "always halt" was specified as a boot flag, obey. */ 1071 if ((boothowto & RB_HALT) != 0) 1072 howto |= RB_HALT; 1073 1074 boothowto = howto; 1075 1076 /* If system is cold, just halt. */ 1077 if (cold) { 1078 boothowto |= RB_HALT; 1079 goto haltsys; 1080 } 1081 1082 if ((boothowto & RB_NOSYNC) == 0 && waittime < 0) { 1083 waittime = 0; 1084 vfs_shutdown(); 1085 /* 1086 * If we've been adjusting the clock, the todr 1087 * will be out of synch; adjust it now. 1088 */ 1089 resettodr(); 1090 } 1091 1092 /* Disable interrupts. */ 1093 splhigh(); 1094 1095 #if defined(MULTIPROCESSOR) 1096 /* 1097 * Halt all other CPUs. If we're not the primary, the 1098 * primary will spin, waiting for us to halt. 1099 */ 1100 alpha_broadcast_ipi(ALPHA_IPI_HALT); 1101 1102 for (i = 0; i < 10000; i++) { 1103 alpha_mb(); 1104 if (cpus_running == wait_mask) 1105 break; 1106 delay(1000); 1107 } 1108 alpha_mb(); 1109 if (cpus_running != wait_mask) 1110 printf("WARNING: Unable to halt secondary CPUs (0x%lx)\n", 1111 cpus_running); 1112 #endif /* MULTIPROCESSOR */ 1113 1114 /* If rebooting and a dump is requested do it. */ 1115 #if 0 1116 if ((boothowto & (RB_DUMP | RB_HALT)) == RB_DUMP) 1117 #else 1118 if (boothowto & RB_DUMP) 1119 #endif 1120 dumpsys(); 1121 1122 haltsys: 1123 1124 /* run any shutdown hooks */ 1125 doshutdownhooks(); 1126 1127 #ifdef BOOTKEY 1128 printf("hit any key to %s...\n", howto & RB_HALT ? "halt" : "reboot"); 1129 cnpollc(1); /* for proper keyboard command handling */ 1130 cngetc(); 1131 cnpollc(0); 1132 printf("\n"); 1133 #endif 1134 1135 /* Finally, powerdown/halt/reboot the system. */ 1136 if ((boothowto & RB_POWERDOWN) == RB_POWERDOWN && 1137 platform.powerdown != NULL) { 1138 (*platform.powerdown)(); 1139 printf("WARNING: powerdown failed!\n"); 1140 } 1141 printf("%s\n\n", (boothowto & RB_HALT) ? "halted." : "rebooting..."); 1142 #if defined(MULTIPROCESSOR) 1143 if (cpu_id != hwrpb->rpb_primary_cpu_id) 1144 cpu_halt(); 1145 else 1146 #endif 1147 prom_halt(boothowto & RB_HALT); 1148 /*NOTREACHED*/ 1149 } 1150 1151 /* 1152 * These variables are needed by /sbin/savecore 1153 */ 1154 u_int32_t dumpmag = 0x8fca0101; /* magic number */ 1155 int dumpsize = 0; /* pages */ 1156 long dumplo = 0; /* blocks */ 1157 1158 /* 1159 * cpu_dumpsize: calculate size of machine-dependent kernel core dump headers. 1160 */ 1161 int 1162 cpu_dumpsize() 1163 { 1164 int size; 1165 1166 size = ALIGN(sizeof(kcore_seg_t)) + ALIGN(sizeof(cpu_kcore_hdr_t)) + 1167 ALIGN(mem_cluster_cnt * sizeof(phys_ram_seg_t)); 1168 if (roundup(size, dbtob(1)) != dbtob(1)) 1169 return -1; 1170 1171 return (1); 1172 } 1173 1174 /* 1175 * cpu_dump_mempagecnt: calculate size of RAM (in pages) to be dumped. 1176 */ 1177 u_long 1178 cpu_dump_mempagecnt() 1179 { 1180 u_long i, n; 1181 1182 n = 0; 1183 for (i = 0; i < mem_cluster_cnt; i++) 1184 n += atop(mem_clusters[i].size); 1185 return (n); 1186 } 1187 1188 /* 1189 * cpu_dump: dump machine-dependent kernel core dump headers. 1190 */ 1191 int 1192 cpu_dump() 1193 { 1194 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1195 char buf[dbtob(1)]; 1196 kcore_seg_t *segp; 1197 cpu_kcore_hdr_t *cpuhdrp; 1198 phys_ram_seg_t *memsegp; 1199 const struct bdevsw *bdev; 1200 int i; 1201 1202 bdev = bdevsw_lookup(dumpdev); 1203 if (bdev == NULL) 1204 return (ENXIO); 1205 dump = bdev->d_dump; 1206 1207 memset(buf, 0, sizeof buf); 1208 segp = (kcore_seg_t *)buf; 1209 cpuhdrp = (cpu_kcore_hdr_t *)&buf[ALIGN(sizeof(*segp))]; 1210 memsegp = (phys_ram_seg_t *)&buf[ ALIGN(sizeof(*segp)) + 1211 ALIGN(sizeof(*cpuhdrp))]; 1212 1213 /* 1214 * Generate a segment header. 1215 */ 1216 CORE_SETMAGIC(*segp, KCORE_MAGIC, MID_MACHINE, CORE_CPU); 1217 segp->c_size = dbtob(1) - ALIGN(sizeof(*segp)); 1218 1219 /* 1220 * Add the machine-dependent header info. 1221 */ 1222 cpuhdrp->lev1map_pa = ALPHA_K0SEG_TO_PHYS((vaddr_t)kernel_lev1map); 1223 cpuhdrp->page_size = PAGE_SIZE; 1224 cpuhdrp->nmemsegs = mem_cluster_cnt; 1225 1226 /* 1227 * Fill in the memory segment descriptors. 1228 */ 1229 for (i = 0; i < mem_cluster_cnt; i++) { 1230 memsegp[i].start = mem_clusters[i].start; 1231 memsegp[i].size = mem_clusters[i].size & ~PAGE_MASK; 1232 } 1233 1234 return (dump(dumpdev, dumplo, (caddr_t)buf, dbtob(1))); 1235 } 1236 1237 /* 1238 * This is called by main to set dumplo and dumpsize. 1239 * Dumps always skip the first NBPG of disk space 1240 * in case there might be a disk label stored there. 1241 * If there is extra space, put dump at the end to 1242 * reduce the chance that swapping trashes it. 1243 */ 1244 void 1245 cpu_dumpconf() 1246 { 1247 const struct bdevsw *bdev; 1248 int nblks, dumpblks; /* size of dump area */ 1249 1250 if (dumpdev == NODEV) 1251 goto bad; 1252 bdev = bdevsw_lookup(dumpdev); 1253 if (bdev == NULL) 1254 panic("dumpconf: bad dumpdev=0x%x", dumpdev); 1255 if (bdev->d_psize == NULL) 1256 goto bad; 1257 nblks = (*bdev->d_psize)(dumpdev); 1258 if (nblks <= ctod(1)) 1259 goto bad; 1260 1261 dumpblks = cpu_dumpsize(); 1262 if (dumpblks < 0) 1263 goto bad; 1264 dumpblks += ctod(cpu_dump_mempagecnt()); 1265 1266 /* If dump won't fit (incl. room for possible label), punt. */ 1267 if (dumpblks > (nblks - ctod(1))) 1268 goto bad; 1269 1270 /* Put dump at end of partition */ 1271 dumplo = nblks - dumpblks; 1272 1273 /* dumpsize is in page units, and doesn't include headers. */ 1274 dumpsize = cpu_dump_mempagecnt(); 1275 return; 1276 1277 bad: 1278 dumpsize = 0; 1279 return; 1280 } 1281 1282 /* 1283 * Dump the kernel's image to the swap partition. 1284 */ 1285 #define BYTES_PER_DUMP NBPG 1286 1287 void 1288 dumpsys() 1289 { 1290 const struct bdevsw *bdev; 1291 u_long totalbytesleft, bytes, i, n, memcl; 1292 u_long maddr; 1293 int psize; 1294 daddr_t blkno; 1295 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1296 int error; 1297 1298 /* Save registers. */ 1299 savectx(&dumppcb); 1300 1301 if (dumpdev == NODEV) 1302 return; 1303 bdev = bdevsw_lookup(dumpdev); 1304 if (bdev == NULL || bdev->d_psize == NULL) 1305 return; 1306 1307 /* 1308 * For dumps during autoconfiguration, 1309 * if dump device has already configured... 1310 */ 1311 if (dumpsize == 0) 1312 cpu_dumpconf(); 1313 if (dumplo <= 0) { 1314 printf("\ndump to dev %u,%u not possible\n", major(dumpdev), 1315 minor(dumpdev)); 1316 return; 1317 } 1318 printf("\ndumping to dev %u,%u offset %ld\n", major(dumpdev), 1319 minor(dumpdev), dumplo); 1320 1321 psize = (*bdev->d_psize)(dumpdev); 1322 printf("dump "); 1323 if (psize == -1) { 1324 printf("area unavailable\n"); 1325 return; 1326 } 1327 1328 /* XXX should purge all outstanding keystrokes. */ 1329 1330 if ((error = cpu_dump()) != 0) 1331 goto err; 1332 1333 totalbytesleft = ptoa(cpu_dump_mempagecnt()); 1334 blkno = dumplo + cpu_dumpsize(); 1335 dump = bdev->d_dump; 1336 error = 0; 1337 1338 for (memcl = 0; memcl < mem_cluster_cnt; memcl++) { 1339 maddr = mem_clusters[memcl].start; 1340 bytes = mem_clusters[memcl].size & ~PAGE_MASK; 1341 1342 for (i = 0; i < bytes; i += n, totalbytesleft -= n) { 1343 1344 /* Print out how many MBs we to go. */ 1345 if ((totalbytesleft % (1024*1024)) == 0) 1346 printf("%ld ", totalbytesleft / (1024 * 1024)); 1347 1348 /* Limit size for next transfer. */ 1349 n = bytes - i; 1350 if (n > BYTES_PER_DUMP) 1351 n = BYTES_PER_DUMP; 1352 1353 error = (*dump)(dumpdev, blkno, 1354 (caddr_t)ALPHA_PHYS_TO_K0SEG(maddr), n); 1355 if (error) 1356 goto err; 1357 maddr += n; 1358 blkno += btodb(n); /* XXX? */ 1359 1360 /* XXX should look for keystrokes, to cancel. */ 1361 } 1362 } 1363 1364 err: 1365 switch (error) { 1366 1367 case ENXIO: 1368 printf("device bad\n"); 1369 break; 1370 1371 case EFAULT: 1372 printf("device not ready\n"); 1373 break; 1374 1375 case EINVAL: 1376 printf("area improper\n"); 1377 break; 1378 1379 case EIO: 1380 printf("i/o error\n"); 1381 break; 1382 1383 case EINTR: 1384 printf("aborted from console\n"); 1385 break; 1386 1387 case 0: 1388 printf("succeeded\n"); 1389 break; 1390 1391 default: 1392 printf("error %d\n", error); 1393 break; 1394 } 1395 printf("\n\n"); 1396 delay(1000); 1397 } 1398 1399 void 1400 frametoreg(framep, regp) 1401 struct trapframe *framep; 1402 struct reg *regp; 1403 { 1404 1405 regp->r_regs[R_V0] = framep->tf_regs[FRAME_V0]; 1406 regp->r_regs[R_T0] = framep->tf_regs[FRAME_T0]; 1407 regp->r_regs[R_T1] = framep->tf_regs[FRAME_T1]; 1408 regp->r_regs[R_T2] = framep->tf_regs[FRAME_T2]; 1409 regp->r_regs[R_T3] = framep->tf_regs[FRAME_T3]; 1410 regp->r_regs[R_T4] = framep->tf_regs[FRAME_T4]; 1411 regp->r_regs[R_T5] = framep->tf_regs[FRAME_T5]; 1412 regp->r_regs[R_T6] = framep->tf_regs[FRAME_T6]; 1413 regp->r_regs[R_T7] = framep->tf_regs[FRAME_T7]; 1414 regp->r_regs[R_S0] = framep->tf_regs[FRAME_S0]; 1415 regp->r_regs[R_S1] = framep->tf_regs[FRAME_S1]; 1416 regp->r_regs[R_S2] = framep->tf_regs[FRAME_S2]; 1417 regp->r_regs[R_S3] = framep->tf_regs[FRAME_S3]; 1418 regp->r_regs[R_S4] = framep->tf_regs[FRAME_S4]; 1419 regp->r_regs[R_S5] = framep->tf_regs[FRAME_S5]; 1420 regp->r_regs[R_S6] = framep->tf_regs[FRAME_S6]; 1421 regp->r_regs[R_A0] = framep->tf_regs[FRAME_A0]; 1422 regp->r_regs[R_A1] = framep->tf_regs[FRAME_A1]; 1423 regp->r_regs[R_A2] = framep->tf_regs[FRAME_A2]; 1424 regp->r_regs[R_A3] = framep->tf_regs[FRAME_A3]; 1425 regp->r_regs[R_A4] = framep->tf_regs[FRAME_A4]; 1426 regp->r_regs[R_A5] = framep->tf_regs[FRAME_A5]; 1427 regp->r_regs[R_T8] = framep->tf_regs[FRAME_T8]; 1428 regp->r_regs[R_T9] = framep->tf_regs[FRAME_T9]; 1429 regp->r_regs[R_T10] = framep->tf_regs[FRAME_T10]; 1430 regp->r_regs[R_T11] = framep->tf_regs[FRAME_T11]; 1431 regp->r_regs[R_RA] = framep->tf_regs[FRAME_RA]; 1432 regp->r_regs[R_T12] = framep->tf_regs[FRAME_T12]; 1433 regp->r_regs[R_AT] = framep->tf_regs[FRAME_AT]; 1434 regp->r_regs[R_GP] = framep->tf_regs[FRAME_GP]; 1435 /* regp->r_regs[R_SP] = framep->tf_regs[FRAME_SP]; XXX */ 1436 regp->r_regs[R_ZERO] = 0; 1437 } 1438 1439 void 1440 regtoframe(regp, framep) 1441 struct reg *regp; 1442 struct trapframe *framep; 1443 { 1444 1445 framep->tf_regs[FRAME_V0] = regp->r_regs[R_V0]; 1446 framep->tf_regs[FRAME_T0] = regp->r_regs[R_T0]; 1447 framep->tf_regs[FRAME_T1] = regp->r_regs[R_T1]; 1448 framep->tf_regs[FRAME_T2] = regp->r_regs[R_T2]; 1449 framep->tf_regs[FRAME_T3] = regp->r_regs[R_T3]; 1450 framep->tf_regs[FRAME_T4] = regp->r_regs[R_T4]; 1451 framep->tf_regs[FRAME_T5] = regp->r_regs[R_T5]; 1452 framep->tf_regs[FRAME_T6] = regp->r_regs[R_T6]; 1453 framep->tf_regs[FRAME_T7] = regp->r_regs[R_T7]; 1454 framep->tf_regs[FRAME_S0] = regp->r_regs[R_S0]; 1455 framep->tf_regs[FRAME_S1] = regp->r_regs[R_S1]; 1456 framep->tf_regs[FRAME_S2] = regp->r_regs[R_S2]; 1457 framep->tf_regs[FRAME_S3] = regp->r_regs[R_S3]; 1458 framep->tf_regs[FRAME_S4] = regp->r_regs[R_S4]; 1459 framep->tf_regs[FRAME_S5] = regp->r_regs[R_S5]; 1460 framep->tf_regs[FRAME_S6] = regp->r_regs[R_S6]; 1461 framep->tf_regs[FRAME_A0] = regp->r_regs[R_A0]; 1462 framep->tf_regs[FRAME_A1] = regp->r_regs[R_A1]; 1463 framep->tf_regs[FRAME_A2] = regp->r_regs[R_A2]; 1464 framep->tf_regs[FRAME_A3] = regp->r_regs[R_A3]; 1465 framep->tf_regs[FRAME_A4] = regp->r_regs[R_A4]; 1466 framep->tf_regs[FRAME_A5] = regp->r_regs[R_A5]; 1467 framep->tf_regs[FRAME_T8] = regp->r_regs[R_T8]; 1468 framep->tf_regs[FRAME_T9] = regp->r_regs[R_T9]; 1469 framep->tf_regs[FRAME_T10] = regp->r_regs[R_T10]; 1470 framep->tf_regs[FRAME_T11] = regp->r_regs[R_T11]; 1471 framep->tf_regs[FRAME_RA] = regp->r_regs[R_RA]; 1472 framep->tf_regs[FRAME_T12] = regp->r_regs[R_T12]; 1473 framep->tf_regs[FRAME_AT] = regp->r_regs[R_AT]; 1474 framep->tf_regs[FRAME_GP] = regp->r_regs[R_GP]; 1475 /* framep->tf_regs[FRAME_SP] = regp->r_regs[R_SP]; XXX */ 1476 /* ??? = regp->r_regs[R_ZERO]; */ 1477 } 1478 1479 void 1480 printregs(regp) 1481 struct reg *regp; 1482 { 1483 int i; 1484 1485 for (i = 0; i < 32; i++) 1486 printf("R%d:\t0x%016lx%s", i, regp->r_regs[i], 1487 i & 1 ? "\n" : "\t"); 1488 } 1489 1490 void 1491 regdump(framep) 1492 struct trapframe *framep; 1493 { 1494 struct reg reg; 1495 1496 frametoreg(framep, ®); 1497 reg.r_regs[R_SP] = alpha_pal_rdusp(); 1498 1499 printf("REGISTERS:\n"); 1500 printregs(®); 1501 } 1502 1503 1504 /* 1505 * Send an interrupt to process. 1506 */ 1507 void 1508 sendsig(sig, mask, code) 1509 int sig; 1510 sigset_t *mask; 1511 u_long code; 1512 { 1513 struct proc *p = curproc; 1514 struct sigacts *ps = p->p_sigacts; 1515 struct sigcontext *scp, ksc; 1516 struct trapframe *frame; 1517 int onstack, fsize, rndfsize; 1518 sig_t catcher = SIGACTION(p, sig).sa_handler; 1519 1520 frame = p->p_md.md_tf; 1521 1522 /* Do we need to jump onto the signal stack? */ 1523 onstack = 1524 (p->p_sigctx.ps_sigstk.ss_flags & (SS_DISABLE | SS_ONSTACK)) == 0 && 1525 (SIGACTION(p, sig).sa_flags & SA_ONSTACK) != 0; 1526 1527 /* Allocate space for the signal handler context. */ 1528 fsize = sizeof(ksc); 1529 rndfsize = ((fsize + 15) / 16) * 16; 1530 1531 if (onstack) 1532 scp = (struct sigcontext *)((caddr_t)p->p_sigctx.ps_sigstk.ss_sp + 1533 p->p_sigctx.ps_sigstk.ss_size); 1534 else 1535 scp = (struct sigcontext *)(alpha_pal_rdusp()); 1536 scp = (struct sigcontext *)((caddr_t)scp - rndfsize); 1537 1538 #ifdef DEBUG 1539 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1540 printf("sendsig(%d): sig %d ssp %p usp %p\n", p->p_pid, 1541 sig, &onstack, scp); 1542 #endif 1543 1544 /* Build stack frame for signal trampoline. */ 1545 ksc.sc_pc = frame->tf_regs[FRAME_PC]; 1546 ksc.sc_ps = frame->tf_regs[FRAME_PS]; 1547 1548 /* Save register context. */ 1549 frametoreg(frame, (struct reg *)ksc.sc_regs); 1550 ksc.sc_regs[R_ZERO] = 0xACEDBADE; /* magic number */ 1551 ksc.sc_regs[R_SP] = alpha_pal_rdusp(); 1552 1553 /* save the floating-point state, if necessary, then copy it. */ 1554 if (p->p_addr->u_pcb.pcb_fpcpu != NULL) 1555 fpusave_proc(p, 1); 1556 ksc.sc_ownedfp = p->p_md.md_flags & MDP_FPUSED; 1557 memcpy((struct fpreg *)ksc.sc_fpregs, &p->p_addr->u_pcb.pcb_fp, 1558 sizeof(struct fpreg)); 1559 ksc.sc_fp_control = alpha_read_fp_c(p); 1560 memset(ksc.sc_reserved, 0, sizeof ksc.sc_reserved); /* XXX */ 1561 memset(ksc.sc_xxx, 0, sizeof ksc.sc_xxx); /* XXX */ 1562 1563 /* Save signal stack. */ 1564 ksc.sc_onstack = p->p_sigctx.ps_sigstk.ss_flags & SS_ONSTACK; 1565 1566 /* Save signal mask. */ 1567 ksc.sc_mask = *mask; 1568 1569 #ifdef COMPAT_13 1570 /* 1571 * XXX We always have to save an old style signal mask because 1572 * XXX we might be delivering a signal to a process which will 1573 * XXX escape from the signal in a non-standard way and invoke 1574 * XXX sigreturn() directly. 1575 */ 1576 { 1577 /* Note: it's a long in the stack frame. */ 1578 sigset13_t mask13; 1579 1580 native_sigset_to_sigset13(mask, &mask13); 1581 ksc.__sc_mask13 = mask13; 1582 } 1583 #endif 1584 1585 #ifdef COMPAT_OSF1 1586 /* 1587 * XXX Create an OSF/1-style sigcontext and associated goo. 1588 */ 1589 #endif 1590 1591 if (copyout(&ksc, (caddr_t)scp, fsize) != 0) { 1592 /* 1593 * Process has trashed its stack; give it an illegal 1594 * instruction to halt it in its tracks. 1595 */ 1596 #ifdef DEBUG 1597 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1598 printf("sendsig(%d): copyout failed on sig %d\n", 1599 p->p_pid, sig); 1600 #endif 1601 sigexit(p, SIGILL); 1602 /* NOTREACHED */ 1603 } 1604 #ifdef DEBUG 1605 if (sigdebug & SDB_FOLLOW) 1606 printf("sendsig(%d): sig %d scp %p code %lx\n", p->p_pid, sig, 1607 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 switch (ps->sa_sigdesc[sig].sd_vers) { 1617 #if 1 /* COMPAT_16 */ 1618 case 0: /* legacy on-stack sigtramp */ 1619 frame->tf_regs[FRAME_RA] = (u_int64_t)p->p_sigctx.ps_sigcode; 1620 break; 1621 #endif /* COMPAT_16 */ 1622 1623 case 1: 1624 frame->tf_regs[FRAME_RA] = 1625 (u_int64_t)ps->sa_sigdesc[sig].sd_tramp; 1626 break; 1627 1628 default: 1629 /* Don't know what trampoline version; kill it. */ 1630 sigexit(p, SIGILL); 1631 } 1632 frame->tf_regs[FRAME_PC] = (u_int64_t)catcher; 1633 frame->tf_regs[FRAME_A0] = sig; 1634 frame->tf_regs[FRAME_A1] = code; 1635 frame->tf_regs[FRAME_A2] = (u_int64_t)scp; 1636 frame->tf_regs[FRAME_T12] = (u_int64_t)catcher; 1637 alpha_pal_wrusp((unsigned long)scp); 1638 1639 /* Remember that we're now on the signal stack. */ 1640 if (onstack) 1641 p->p_sigctx.ps_sigstk.ss_flags |= SS_ONSTACK; 1642 1643 #ifdef DEBUG 1644 if (sigdebug & SDB_FOLLOW) 1645 printf("sendsig(%d): pc %lx, catcher %lx\n", p->p_pid, 1646 frame->tf_regs[FRAME_PC], frame->tf_regs[FRAME_A3]); 1647 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1648 printf("sendsig(%d): sig %d returns\n", 1649 p->p_pid, sig); 1650 #endif 1651 } 1652 1653 /* 1654 * System call to cleanup state after a signal 1655 * has been taken. Reset signal mask and 1656 * stack state from context left by sendsig (above). 1657 * Return to previous pc and psl as specified by 1658 * context left by sendsig. Check carefully to 1659 * make sure that the user has not modified the 1660 * psl to gain improper privileges or to cause 1661 * a machine fault. 1662 */ 1663 /* ARGSUSED */ 1664 int 1665 sys___sigreturn14(p, v, retval) 1666 struct proc *p; 1667 void *v; 1668 register_t *retval; 1669 { 1670 struct sys___sigreturn14_args /* { 1671 syscallarg(struct sigcontext *) sigcntxp; 1672 } */ *uap = v; 1673 struct sigcontext *scp, ksc; 1674 1675 /* 1676 * The trampoline code hands us the context. 1677 * It is unsafe to keep track of it ourselves, in the event that a 1678 * program jumps out of a signal handler. 1679 */ 1680 scp = SCARG(uap, sigcntxp); 1681 #ifdef DEBUG 1682 if (sigdebug & SDB_FOLLOW) 1683 printf("sigreturn: pid %d, scp %p\n", p->p_pid, scp); 1684 #endif 1685 if (ALIGN(scp) != (u_int64_t)scp) 1686 return (EINVAL); 1687 1688 if (copyin((caddr_t)scp, &ksc, sizeof(ksc)) != 0) 1689 return (EFAULT); 1690 1691 if (ksc.sc_regs[R_ZERO] != 0xACEDBADE) /* magic number */ 1692 return (EINVAL); 1693 1694 /* Restore register context. */ 1695 p->p_md.md_tf->tf_regs[FRAME_PC] = ksc.sc_pc; 1696 p->p_md.md_tf->tf_regs[FRAME_PS] = 1697 (ksc.sc_ps | ALPHA_PSL_USERSET) & ~ALPHA_PSL_USERCLR; 1698 1699 regtoframe((struct reg *)ksc.sc_regs, p->p_md.md_tf); 1700 alpha_pal_wrusp(ksc.sc_regs[R_SP]); 1701 1702 /* XXX ksc.sc_ownedfp ? */ 1703 if (p->p_addr->u_pcb.pcb_fpcpu != NULL) 1704 fpusave_proc(p, 0); 1705 memcpy(&p->p_addr->u_pcb.pcb_fp, (struct fpreg *)ksc.sc_fpregs, 1706 sizeof(struct fpreg)); 1707 p->p_addr->u_pcb.pcb_fp.fpr_cr = ksc.sc_fpcr; 1708 p->p_md.md_flags = ksc.sc_fp_control & MDP_FP_C; 1709 1710 /* Restore signal stack. */ 1711 if (ksc.sc_onstack & SS_ONSTACK) 1712 p->p_sigctx.ps_sigstk.ss_flags |= SS_ONSTACK; 1713 else 1714 p->p_sigctx.ps_sigstk.ss_flags &= ~SS_ONSTACK; 1715 1716 /* Restore signal mask. */ 1717 (void) sigprocmask1(p, SIG_SETMASK, &ksc.sc_mask, 0); 1718 1719 #ifdef DEBUG 1720 if (sigdebug & SDB_FOLLOW) 1721 printf("sigreturn(%d): returns\n", p->p_pid); 1722 #endif 1723 return (EJUSTRETURN); 1724 } 1725 1726 /* 1727 * machine dependent system variables. 1728 */ 1729 int 1730 cpu_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 1731 int *name; 1732 u_int namelen; 1733 void *oldp; 1734 size_t *oldlenp; 1735 void *newp; 1736 size_t newlen; 1737 struct proc *p; 1738 { 1739 dev_t consdev; 1740 1741 /* all sysctl names at this level are terminal */ 1742 if (namelen != 1) 1743 return (ENOTDIR); /* overloaded */ 1744 1745 switch (name[0]) { 1746 case CPU_CONSDEV: 1747 if (cn_tab != NULL) 1748 consdev = cn_tab->cn_dev; 1749 else 1750 consdev = NODEV; 1751 return (sysctl_rdstruct(oldp, oldlenp, newp, &consdev, 1752 sizeof consdev)); 1753 1754 case CPU_ROOT_DEVICE: 1755 return (sysctl_rdstring(oldp, oldlenp, newp, 1756 root_device->dv_xname)); 1757 1758 case CPU_UNALIGNED_PRINT: 1759 return (sysctl_int(oldp, oldlenp, newp, newlen, 1760 &alpha_unaligned_print)); 1761 1762 case CPU_UNALIGNED_FIX: 1763 return (sysctl_int(oldp, oldlenp, newp, newlen, 1764 &alpha_unaligned_fix)); 1765 1766 case CPU_UNALIGNED_SIGBUS: 1767 return (sysctl_int(oldp, oldlenp, newp, newlen, 1768 &alpha_unaligned_sigbus)); 1769 1770 case CPU_BOOTED_KERNEL: 1771 return (sysctl_rdstring(oldp, oldlenp, newp, 1772 bootinfo.booted_kernel)); 1773 1774 case CPU_FP_SYNC_COMPLETE: 1775 return (sysctl_int(oldp, oldlenp, newp, newlen, 1776 &alpha_fp_sync_complete)); 1777 1778 default: 1779 return (EOPNOTSUPP); 1780 } 1781 /* NOTREACHED */ 1782 } 1783 1784 /* 1785 * Set registers on exec. 1786 */ 1787 void 1788 setregs(p, pack, stack) 1789 register struct proc *p; 1790 struct exec_package *pack; 1791 u_long stack; 1792 { 1793 struct trapframe *tfp = p->p_md.md_tf; 1794 #ifdef DEBUG 1795 int i; 1796 #endif 1797 1798 #ifdef DEBUG 1799 /* 1800 * Crash and dump, if the user requested it. 1801 */ 1802 if (boothowto & RB_DUMP) 1803 panic("crash requested by boot flags"); 1804 #endif 1805 1806 #ifdef DEBUG 1807 for (i = 0; i < FRAME_SIZE; i++) 1808 tfp->tf_regs[i] = 0xbabefacedeadbeef; 1809 #else 1810 memset(tfp->tf_regs, 0, FRAME_SIZE * sizeof tfp->tf_regs[0]); 1811 #endif 1812 memset(&p->p_addr->u_pcb.pcb_fp, 0, sizeof p->p_addr->u_pcb.pcb_fp); 1813 alpha_pal_wrusp(stack); 1814 tfp->tf_regs[FRAME_PS] = ALPHA_PSL_USERSET; 1815 tfp->tf_regs[FRAME_PC] = pack->ep_entry & ~3; 1816 1817 tfp->tf_regs[FRAME_A0] = stack; /* a0 = sp */ 1818 tfp->tf_regs[FRAME_A1] = 0; /* a1 = rtld cleanup */ 1819 tfp->tf_regs[FRAME_A2] = 0; /* a2 = rtld object */ 1820 tfp->tf_regs[FRAME_A3] = (u_int64_t)p->p_psstr; /* a3 = ps_strings */ 1821 tfp->tf_regs[FRAME_T12] = tfp->tf_regs[FRAME_PC]; /* a.k.a. PV */ 1822 1823 p->p_md.md_flags &= ~MDP_FPUSED; 1824 if (__predict_true((p->p_md.md_flags & IEEE_INHERIT) == 0)) { 1825 p->p_md.md_flags &= ~MDP_FP_C; 1826 p->p_addr->u_pcb.pcb_fp.fpr_cr = FPCR_DYN(FP_RN); 1827 } 1828 if (p->p_addr->u_pcb.pcb_fpcpu != NULL) 1829 fpusave_proc(p, 0); 1830 } 1831 1832 /* 1833 * Release the FPU. 1834 */ 1835 void 1836 fpusave_cpu(struct cpu_info *ci, int save) 1837 { 1838 struct proc *p; 1839 #if defined(MULTIPROCESSOR) 1840 int s; 1841 #endif 1842 1843 KDASSERT(ci == curcpu()); 1844 1845 #if defined(MULTIPROCESSOR) 1846 atomic_setbits_ulong(&ci->ci_flags, CPUF_FPUSAVE); 1847 #endif 1848 1849 p = ci->ci_fpcurproc; 1850 if (p == NULL) 1851 goto out; 1852 1853 if (save) { 1854 alpha_pal_wrfen(1); 1855 savefpstate(&p->p_addr->u_pcb.pcb_fp); 1856 } 1857 1858 alpha_pal_wrfen(0); 1859 1860 FPCPU_LOCK(&p->p_addr->u_pcb, s); 1861 1862 p->p_addr->u_pcb.pcb_fpcpu = NULL; 1863 ci->ci_fpcurproc = NULL; 1864 1865 FPCPU_UNLOCK(&p->p_addr->u_pcb, s); 1866 1867 out: 1868 #if defined(MULTIPROCESSOR) 1869 atomic_clearbits_ulong(&ci->ci_flags, CPUF_FPUSAVE); 1870 #endif 1871 return; 1872 } 1873 1874 /* 1875 * Synchronize FP state for this process. 1876 */ 1877 void 1878 fpusave_proc(struct proc *p, int save) 1879 { 1880 struct cpu_info *ci = curcpu(); 1881 struct cpu_info *oci; 1882 #if defined(MULTIPROCESSOR) 1883 u_long ipi = save ? ALPHA_IPI_SYNCH_FPU : ALPHA_IPI_DISCARD_FPU; 1884 int s, spincount; 1885 #endif 1886 1887 KDASSERT(p->p_addr != NULL); 1888 KDASSERT(p->p_flag & P_INMEM); 1889 1890 FPCPU_LOCK(&p->p_addr->u_pcb, s); 1891 1892 oci = p->p_addr->u_pcb.pcb_fpcpu; 1893 if (oci == NULL) { 1894 FPCPU_UNLOCK(&p->p_addr->u_pcb, s); 1895 return; 1896 } 1897 1898 #if defined(MULTIPROCESSOR) 1899 if (oci == ci) { 1900 KASSERT(ci->ci_fpcurproc == p); 1901 FPCPU_UNLOCK(&p->p_addr->u_pcb, s); 1902 fpusave_cpu(ci, save); 1903 return; 1904 } 1905 1906 KASSERT(oci->ci_fpcurproc == p); 1907 alpha_send_ipi(oci->ci_cpuid, ipi); 1908 FPCPU_UNLOCK(&p->p_addr->u_pcb, s); 1909 1910 spincount = 0; 1911 while (p->p_addr->u_pcb.pcb_fpcpu != NULL) { 1912 spincount++; 1913 delay(1000); /* XXX */ 1914 if (spincount > 10000) 1915 panic("fpsave ipi didn't"); 1916 } 1917 #else 1918 KASSERT(ci->ci_fpcurproc == p); 1919 FPCPU_UNLOCK(&p->p_addr->u_pcb, s); 1920 fpusave_cpu(ci, save); 1921 #endif /* MULTIPROCESSOR */ 1922 } 1923 1924 /* 1925 * The following primitives manipulate the run queues. _whichqs tells which 1926 * of the 32 queues _qs have processes in them. Setrunqueue puts processes 1927 * into queues, Remrunqueue removes them from queues. The running process is 1928 * on no queue, other processes are on a queue related to p->p_priority, 1929 * divided by 4 actually to shrink the 0-127 range of priorities into the 32 1930 * available queues. 1931 */ 1932 /* 1933 * setrunqueue(p) 1934 * proc *p; 1935 * 1936 * Call should be made at splclock(), and p->p_stat should be SRUN. 1937 */ 1938 1939 void 1940 setrunqueue(p) 1941 struct proc *p; 1942 { 1943 int bit; 1944 1945 /* firewall: p->p_back must be NULL */ 1946 if (p->p_back != NULL) 1947 panic("setrunqueue"); 1948 1949 bit = p->p_priority >> 2; 1950 sched_whichqs |= (1 << bit); 1951 p->p_forw = (struct proc *)&sched_qs[bit]; 1952 p->p_back = sched_qs[bit].ph_rlink; 1953 p->p_back->p_forw = p; 1954 sched_qs[bit].ph_rlink = p; 1955 } 1956 1957 /* 1958 * remrunqueue(p) 1959 * 1960 * Call should be made at splclock(). 1961 */ 1962 void 1963 remrunqueue(p) 1964 struct proc *p; 1965 { 1966 int bit; 1967 1968 bit = p->p_priority >> 2; 1969 if ((sched_whichqs & (1 << bit)) == 0) 1970 panic("remrunqueue"); 1971 1972 p->p_back->p_forw = p->p_forw; 1973 p->p_forw->p_back = p->p_back; 1974 p->p_back = NULL; /* for firewall checking. */ 1975 1976 if ((struct proc *)&sched_qs[bit] == sched_qs[bit].ph_link) 1977 sched_whichqs &= ~(1 << bit); 1978 } 1979 1980 /* 1981 * Wait "n" microseconds. 1982 */ 1983 void 1984 delay(n) 1985 unsigned long n; 1986 { 1987 unsigned long pcc0, pcc1, curcycle, cycles, usec; 1988 1989 if (n == 0) 1990 return; 1991 1992 pcc0 = alpha_rpcc() & 0xffffffffUL; 1993 cycles = 0; 1994 usec = 0; 1995 1996 while (usec <= n) { 1997 /* 1998 * Get the next CPU cycle count- assumes that we cannot 1999 * have had more than one 32 bit overflow. 2000 */ 2001 pcc1 = alpha_rpcc() & 0xffffffffUL; 2002 if (pcc1 < pcc0) 2003 curcycle = (pcc1 + 0x100000000UL) - pcc0; 2004 else 2005 curcycle = pcc1 - pcc0; 2006 2007 /* 2008 * We now have the number of processor cycles since we 2009 * last checked. Add the current cycle count to the 2010 * running total. If it's over cycles_per_usec, increment 2011 * the usec counter. 2012 */ 2013 cycles += curcycle; 2014 while (cycles > cycles_per_usec) { 2015 usec++; 2016 cycles -= cycles_per_usec; 2017 } 2018 pcc0 = pcc1; 2019 } 2020 } 2021 2022 #ifdef EXEC_ECOFF 2023 void 2024 cpu_exec_ecoff_setregs(p, epp, stack) 2025 struct proc *p; 2026 struct exec_package *epp; 2027 u_long stack; 2028 { 2029 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2030 2031 p->p_md.md_tf->tf_regs[FRAME_GP] = execp->a.gp_value; 2032 } 2033 2034 /* 2035 * cpu_exec_ecoff_hook(): 2036 * cpu-dependent ECOFF format hook for execve(). 2037 * 2038 * Do any machine-dependent diddling of the exec package when doing ECOFF. 2039 * 2040 */ 2041 int 2042 cpu_exec_ecoff_probe(p, epp) 2043 struct proc *p; 2044 struct exec_package *epp; 2045 { 2046 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2047 int error; 2048 2049 if (execp->f.f_magic == ECOFF_MAGIC_NETBSD_ALPHA) 2050 error = 0; 2051 else 2052 error = ENOEXEC; 2053 2054 return (error); 2055 } 2056 #endif /* EXEC_ECOFF */ 2057 2058 int 2059 alpha_pa_access(pa) 2060 u_long pa; 2061 { 2062 int i; 2063 2064 for (i = 0; i < mem_cluster_cnt; i++) { 2065 if (pa < mem_clusters[i].start) 2066 continue; 2067 if ((pa - mem_clusters[i].start) >= 2068 (mem_clusters[i].size & ~PAGE_MASK)) 2069 continue; 2070 return (mem_clusters[i].size & PAGE_MASK); /* prot */ 2071 } 2072 2073 /* 2074 * Address is not a memory address. If we're secure, disallow 2075 * access. Otherwise, grant read/write. 2076 */ 2077 if (securelevel > 0) 2078 return (PROT_NONE); 2079 else 2080 return (PROT_READ | PROT_WRITE); 2081 } 2082 2083 /* XXX XXX BEGIN XXX XXX */ 2084 paddr_t alpha_XXX_dmamap_or; /* XXX */ 2085 /* XXX */ 2086 paddr_t /* XXX */ 2087 alpha_XXX_dmamap(v) /* XXX */ 2088 vaddr_t v; /* XXX */ 2089 { /* XXX */ 2090 /* XXX */ 2091 return (vtophys(v) | alpha_XXX_dmamap_or); /* XXX */ 2092 } /* XXX */ 2093 /* XXX XXX END XXX XXX */ 2094 2095 char * 2096 dot_conv(x) 2097 unsigned long x; 2098 { 2099 int i; 2100 char *xc; 2101 static int next; 2102 static char space[2][20]; 2103 2104 xc = space[next ^= 1] + sizeof space[0]; 2105 *--xc = '\0'; 2106 for (i = 0;; ++i) { 2107 if (i && (i & 3) == 0) 2108 *--xc = '.'; 2109 *--xc = "0123456789abcdef"[x & 0xf]; 2110 x >>= 4; 2111 if (x == 0) 2112 break; 2113 } 2114 return xc; 2115 } 2116
Indexes created Sat Oct 11 16:09:52 GMT 2025