machdep.c revision 1.240
1 /* $NetBSD: machdep.c,v 1.240 2001/04/24 04:30:50 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 1999, 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center and by Chris G. Demetriou. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /* 41 * Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University. 42 * All rights reserved. 43 * 44 * Author: Chris G. Demetriou 45 * 46 * Permission to use, copy, modify and distribute this software and 47 * its documentation is hereby granted, provided that both the copyright 48 * notice and this permission notice appear in all copies of the 49 * software, derivative works or modified versions, and any portions 50 * thereof, and that both notices appear in supporting documentation. 51 * 52 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 53 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 54 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 55 * 56 * Carnegie Mellon requests users of this software to return to 57 * 58 * Software Distribution Coordinator or Software.Distribution (at) CS.CMU.EDU 59 * School of Computer Science 60 * Carnegie Mellon University 61 * Pittsburgh PA 15213-3890 62 * 63 * any improvements or extensions that they make and grant Carnegie the 64 * rights to redistribute these changes. 65 */ 66 67 #include "opt_ddb.h" 68 #include "opt_multiprocessor.h" 69 #include "opt_dec_3000_300.h" 70 #include "opt_dec_3000_500.h" 71 #include "opt_compat_osf1.h" 72 #include "opt_compat_netbsd.h" 73 74 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 75 76 __KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.240 2001/04/24 04:30:50 thorpej Exp $"); 77 78 #include <sys/param.h> 79 #include <sys/systm.h> 80 #include <sys/signalvar.h> 81 #include <sys/kernel.h> 82 #include <sys/map.h> 83 #include <sys/proc.h> 84 #include <sys/sched.h> 85 #include <sys/buf.h> 86 #include <sys/reboot.h> 87 #include <sys/device.h> 88 #include <sys/file.h> 89 #include <sys/malloc.h> 90 #include <sys/mbuf.h> 91 #include <sys/mman.h> 92 #include <sys/msgbuf.h> 93 #include <sys/ioctl.h> 94 #include <sys/tty.h> 95 #include <sys/user.h> 96 #include <sys/exec.h> 97 #include <sys/exec_ecoff.h> 98 #include <sys/core.h> 99 #include <sys/kcore.h> 100 #include <machine/kcore.h> 101 102 #include <sys/mount.h> 103 #include <sys/syscallargs.h> 104 105 #include <uvm/uvm_extern.h> 106 #include <sys/sysctl.h> 107 108 #include <dev/cons.h> 109 110 #include <machine/autoconf.h> 111 #include <machine/cpu.h> 112 #include <machine/reg.h> 113 #include <machine/rpb.h> 114 #include <machine/prom.h> 115 #include <machine/conf.h> 116 #include <machine/ieeefp.h> 117 118 #ifdef DDB 119 #include <machine/db_machdep.h> 120 #include <ddb/db_access.h> 121 #include <ddb/db_sym.h> 122 #include <ddb/db_extern.h> 123 #include <ddb/db_interface.h> 124 #endif 125 126 #ifdef KGDB 127 #include <sys/kgdb.h> 128 #endif 129 130 #ifdef DEBUG 131 #include <machine/sigdebug.h> 132 #endif 133 134 #include <machine/alpha.h> 135 136 vm_map_t exec_map = NULL; 137 vm_map_t mb_map = NULL; 138 vm_map_t phys_map = NULL; 139 140 caddr_t msgbufaddr; 141 142 int maxmem; /* max memory per process */ 143 144 int totalphysmem; /* total amount of physical memory in system */ 145 int physmem; /* physical memory used by NetBSD + some rsvd */ 146 int resvmem; /* amount of memory reserved for PROM */ 147 int unusedmem; /* amount of memory for OS that we don't use */ 148 int unknownmem; /* amount of memory with an unknown use */ 149 150 int cputype; /* system type, from the RPB */ 151 152 int bootdev_debug = 0; /* patchable, or from DDB */ 153 154 /* 155 * XXX We need an address to which we can assign things so that they 156 * won't be optimized away because we didn't use the value. 157 */ 158 u_int32_t no_optimize; 159 160 /* the following is used externally (sysctl_hw) */ 161 char machine[] = MACHINE; /* from <machine/param.h> */ 162 char machine_arch[] = MACHINE_ARCH; /* from <machine/param.h> */ 163 char cpu_model[128]; 164 165 struct user *proc0paddr; 166 167 /* Number of machine cycles per microsecond */ 168 u_int64_t cycles_per_usec; 169 170 /* number of cpus in the box. really! */ 171 int ncpus; 172 173 struct bootinfo_kernel bootinfo; 174 175 /* For built-in TCDS */ 176 #if defined(DEC_3000_300) || defined(DEC_3000_500) 177 u_int8_t dec_3000_scsiid[2], dec_3000_scsifast[2]; 178 #endif 179 180 struct platform platform; 181 182 #ifdef DDB 183 /* start and end of kernel symbol table */ 184 void *ksym_start, *ksym_end; 185 #endif 186 187 /* for cpu_sysctl() */ 188 int alpha_unaligned_print = 1; /* warn about unaligned accesses */ 189 int alpha_unaligned_fix = 1; /* fix up unaligned accesses */ 190 int alpha_unaligned_sigbus = 0; /* don't SIGBUS on fixed-up accesses */ 191 192 /* 193 * XXX This should be dynamically sized, but we have the chicken-egg problem! 194 * XXX it should also be larger than it is, because not all of the mddt 195 * XXX clusters end up being used for VM. 196 */ 197 phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX]; /* low size bits overloaded */ 198 int mem_cluster_cnt; 199 200 int cpu_dump __P((void)); 201 int cpu_dumpsize __P((void)); 202 u_long cpu_dump_mempagecnt __P((void)); 203 void dumpsys __P((void)); 204 void identifycpu __P((void)); 205 void printregs __P((struct reg *)); 206 207 void 208 alpha_init(pfn, ptb, bim, bip, biv) 209 u_long pfn; /* first free PFN number */ 210 u_long ptb; /* PFN of current level 1 page table */ 211 u_long bim; /* bootinfo magic */ 212 u_long bip; /* bootinfo pointer */ 213 u_long biv; /* bootinfo version */ 214 { 215 extern char kernel_text[], _end[]; 216 struct mddt *mddtp; 217 struct mddt_cluster *memc; 218 int i, mddtweird; 219 struct vm_physseg *vps; 220 vaddr_t kernstart, kernend; 221 paddr_t kernstartpfn, kernendpfn, pfn0, pfn1; 222 vsize_t size; 223 cpuid_t cpu_id; 224 struct cpu_info *ci; 225 char *p; 226 caddr_t v; 227 const char *bootinfo_msg; 228 const struct cpuinit *c; 229 230 /* NO OUTPUT ALLOWED UNTIL FURTHER NOTICE */ 231 232 /* 233 * Turn off interrupts (not mchecks) and floating point. 234 * Make sure the instruction and data streams are consistent. 235 */ 236 (void)alpha_pal_swpipl(ALPHA_PSL_IPL_HIGH); 237 alpha_pal_wrfen(0); 238 ALPHA_TBIA(); 239 alpha_pal_imb(); 240 241 cpu_id = cpu_number(); 242 243 #if defined(MULTIPROCESSOR) 244 /* 245 * Set our SysValue to the address of our cpu_info structure. 246 * Secondary processors do this in their spinup trampoline. 247 */ 248 alpha_pal_wrval((u_long)&cpu_info_primary); 249 cpu_info[cpu_id] = &cpu_info_primary; 250 #endif 251 252 ci = curcpu(); 253 ci->ci_cpuid = cpu_id; 254 255 /* 256 * Get critical system information (if possible, from the 257 * information provided by the boot program). 258 */ 259 bootinfo_msg = NULL; 260 if (bim == BOOTINFO_MAGIC) { 261 if (biv == 0) { /* backward compat */ 262 biv = *(u_long *)bip; 263 bip += 8; 264 } 265 switch (biv) { 266 case 1: { 267 struct bootinfo_v1 *v1p = (struct bootinfo_v1 *)bip; 268 269 bootinfo.ssym = v1p->ssym; 270 bootinfo.esym = v1p->esym; 271 /* hwrpb may not be provided by boot block in v1 */ 272 if (v1p->hwrpb != NULL) { 273 bootinfo.hwrpb_phys = 274 ((struct rpb *)v1p->hwrpb)->rpb_phys; 275 bootinfo.hwrpb_size = v1p->hwrpbsize; 276 } else { 277 bootinfo.hwrpb_phys = 278 ((struct rpb *)HWRPB_ADDR)->rpb_phys; 279 bootinfo.hwrpb_size = 280 ((struct rpb *)HWRPB_ADDR)->rpb_size; 281 } 282 bcopy(v1p->boot_flags, bootinfo.boot_flags, 283 min(sizeof v1p->boot_flags, 284 sizeof bootinfo.boot_flags)); 285 bcopy(v1p->booted_kernel, bootinfo.booted_kernel, 286 min(sizeof v1p->booted_kernel, 287 sizeof bootinfo.booted_kernel)); 288 /* booted dev not provided in bootinfo */ 289 init_prom_interface((struct rpb *) 290 ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys)); 291 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 292 sizeof bootinfo.booted_dev); 293 break; 294 } 295 default: 296 bootinfo_msg = "unknown bootinfo version"; 297 goto nobootinfo; 298 } 299 } else { 300 bootinfo_msg = "boot program did not pass bootinfo"; 301 nobootinfo: 302 bootinfo.ssym = (u_long)_end; 303 bootinfo.esym = (u_long)_end; 304 bootinfo.hwrpb_phys = ((struct rpb *)HWRPB_ADDR)->rpb_phys; 305 bootinfo.hwrpb_size = ((struct rpb *)HWRPB_ADDR)->rpb_size; 306 init_prom_interface((struct rpb *)HWRPB_ADDR); 307 prom_getenv(PROM_E_BOOTED_OSFLAGS, bootinfo.boot_flags, 308 sizeof bootinfo.boot_flags); 309 prom_getenv(PROM_E_BOOTED_FILE, bootinfo.booted_kernel, 310 sizeof bootinfo.booted_kernel); 311 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 312 sizeof bootinfo.booted_dev); 313 } 314 315 /* 316 * Initialize the kernel's mapping of the RPB. It's needed for 317 * lots of things. 318 */ 319 hwrpb = (struct rpb *)ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys); 320 321 #if defined(DEC_3000_300) || defined(DEC_3000_500) 322 if (hwrpb->rpb_type == ST_DEC_3000_300 || 323 hwrpb->rpb_type == ST_DEC_3000_500) { 324 prom_getenv(PROM_E_SCSIID, dec_3000_scsiid, 325 sizeof(dec_3000_scsiid)); 326 prom_getenv(PROM_E_SCSIFAST, dec_3000_scsifast, 327 sizeof(dec_3000_scsifast)); 328 } 329 #endif 330 331 /* 332 * Remember how many cycles there are per microsecond, 333 * so that we can use delay(). Round up, for safety. 334 */ 335 cycles_per_usec = (hwrpb->rpb_cc_freq + 999999) / 1000000; 336 337 /* 338 * Initalize the (temporary) bootstrap console interface, so 339 * we can use printf until the VM system starts being setup. 340 * The real console is initialized before then. 341 */ 342 init_bootstrap_console(); 343 344 /* OUTPUT NOW ALLOWED */ 345 346 /* delayed from above */ 347 if (bootinfo_msg) 348 printf("WARNING: %s (0x%lx, 0x%lx, 0x%lx)\n", 349 bootinfo_msg, bim, bip, biv); 350 351 /* Initialize the trap vectors on the primary processor. */ 352 trap_init(); 353 354 /* 355 * Find out what hardware we're on, and do basic initialization. 356 */ 357 cputype = hwrpb->rpb_type; 358 if (cputype < 0) { 359 /* 360 * At least some white-box systems have SRM which 361 * reports a systype that's the negative of their 362 * blue-box counterpart. 363 */ 364 cputype = -cputype; 365 } 366 c = platform_lookup(cputype); 367 if (c == NULL) { 368 platform_not_supported(); 369 /* NOTREACHED */ 370 } 371 (*c->init)(); 372 strcpy(cpu_model, platform.model); 373 374 /* 375 * Initalize the real console, so that the bootstrap console is 376 * no longer necessary. 377 */ 378 (*platform.cons_init)(); 379 380 #ifdef DIAGNOSTIC 381 /* Paranoid sanity checking */ 382 383 /* We should always be running on the primary. */ 384 assert(hwrpb->rpb_primary_cpu_id == cpu_id); 385 386 /* 387 * On single-CPU systypes, the primary should always be CPU 0, 388 * except on Alpha 8200 systems where the CPU id is related 389 * to the VID, which is related to the Turbo Laser node id. 390 */ 391 if (cputype != ST_DEC_21000) 392 assert(hwrpb->rpb_primary_cpu_id == 0); 393 #endif 394 395 /* NO MORE FIRMWARE ACCESS ALLOWED */ 396 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 397 /* 398 * XXX (unless _PMAP_MAY_USE_PROM_CONSOLE is defined and 399 * XXX pmap_uses_prom_console() evaluates to non-zero.) 400 */ 401 #endif 402 403 /* 404 * find out this system's page size 405 */ 406 PAGE_SIZE = hwrpb->rpb_page_size; 407 if (PAGE_SIZE != 8192) 408 panic("page size %d != 8192?!", PAGE_SIZE); 409 410 /* 411 * Initialize PAGE_SIZE-dependent variables. 412 */ 413 uvm_setpagesize(); 414 415 /* 416 * Find the beginning and end of the kernel (and leave a 417 * bit of space before the beginning for the bootstrap 418 * stack). 419 */ 420 kernstart = trunc_page((vaddr_t)kernel_text) - 2 * PAGE_SIZE; 421 #ifdef DDB 422 ksym_start = (void *)bootinfo.ssym; 423 ksym_end = (void *)bootinfo.esym; 424 kernend = (vaddr_t)round_page((vaddr_t)ksym_end); 425 #else 426 kernend = (vaddr_t)round_page((vaddr_t)_end); 427 #endif 428 429 kernstartpfn = atop(ALPHA_K0SEG_TO_PHYS(kernstart)); 430 kernendpfn = atop(ALPHA_K0SEG_TO_PHYS(kernend)); 431 432 /* 433 * Find out how much memory is available, by looking at 434 * the memory cluster descriptors. This also tries to do 435 * its best to detect things things that have never been seen 436 * before... 437 */ 438 mddtp = (struct mddt *)(((caddr_t)hwrpb) + hwrpb->rpb_memdat_off); 439 440 /* MDDT SANITY CHECKING */ 441 mddtweird = 0; 442 if (mddtp->mddt_cluster_cnt < 2) { 443 mddtweird = 1; 444 printf("WARNING: weird number of mem clusters: %lu\n", 445 mddtp->mddt_cluster_cnt); 446 } 447 448 #if 0 449 printf("Memory cluster count: %d\n", mddtp->mddt_cluster_cnt); 450 #endif 451 452 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 453 memc = &mddtp->mddt_clusters[i]; 454 #if 0 455 printf("MEMC %d: pfn 0x%lx cnt 0x%lx usage 0x%lx\n", i, 456 memc->mddt_pfn, memc->mddt_pg_cnt, memc->mddt_usage); 457 #endif 458 totalphysmem += memc->mddt_pg_cnt; 459 if (mem_cluster_cnt < VM_PHYSSEG_MAX) { /* XXX */ 460 mem_clusters[mem_cluster_cnt].start = 461 ptoa(memc->mddt_pfn); 462 mem_clusters[mem_cluster_cnt].size = 463 ptoa(memc->mddt_pg_cnt); 464 if (memc->mddt_usage & MDDT_mbz || 465 memc->mddt_usage & MDDT_NONVOLATILE || /* XXX */ 466 memc->mddt_usage & MDDT_PALCODE) 467 mem_clusters[mem_cluster_cnt].size |= 468 PROT_READ; 469 else 470 mem_clusters[mem_cluster_cnt].size |= 471 PROT_READ | PROT_WRITE | PROT_EXEC; 472 mem_cluster_cnt++; 473 } 474 475 if (memc->mddt_usage & MDDT_mbz) { 476 mddtweird = 1; 477 printf("WARNING: mem cluster %d has weird " 478 "usage 0x%lx\n", i, memc->mddt_usage); 479 unknownmem += memc->mddt_pg_cnt; 480 continue; 481 } 482 if (memc->mddt_usage & MDDT_NONVOLATILE) { 483 /* XXX should handle these... */ 484 printf("WARNING: skipping non-volatile mem " 485 "cluster %d\n", i); 486 unusedmem += memc->mddt_pg_cnt; 487 continue; 488 } 489 if (memc->mddt_usage & MDDT_PALCODE) { 490 resvmem += memc->mddt_pg_cnt; 491 continue; 492 } 493 494 /* 495 * We have a memory cluster available for system 496 * software use. We must determine if this cluster 497 * holds the kernel. 498 */ 499 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 500 /* 501 * XXX If the kernel uses the PROM console, we only use the 502 * XXX memory after the kernel in the first system segment, 503 * XXX to avoid clobbering prom mapping, data, etc. 504 */ 505 if (!pmap_uses_prom_console() || physmem == 0) { 506 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 507 physmem += memc->mddt_pg_cnt; 508 pfn0 = memc->mddt_pfn; 509 pfn1 = memc->mddt_pfn + memc->mddt_pg_cnt; 510 if (pfn0 <= kernstartpfn && kernendpfn <= pfn1) { 511 /* 512 * Must compute the location of the kernel 513 * within the segment. 514 */ 515 #if 0 516 printf("Cluster %d contains kernel\n", i); 517 #endif 518 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 519 if (!pmap_uses_prom_console()) { 520 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 521 if (pfn0 < kernstartpfn) { 522 /* 523 * There is a chunk before the kernel. 524 */ 525 #if 0 526 printf("Loading chunk before kernel: " 527 "0x%lx / 0x%lx\n", pfn0, kernstartpfn); 528 #endif 529 uvm_page_physload(pfn0, kernstartpfn, 530 pfn0, kernstartpfn, VM_FREELIST_DEFAULT); 531 } 532 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 533 } 534 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 535 if (kernendpfn < pfn1) { 536 /* 537 * There is a chunk after the kernel. 538 */ 539 #if 0 540 printf("Loading chunk after kernel: " 541 "0x%lx / 0x%lx\n", kernendpfn, pfn1); 542 #endif 543 uvm_page_physload(kernendpfn, pfn1, 544 kernendpfn, pfn1, VM_FREELIST_DEFAULT); 545 } 546 } else { 547 /* 548 * Just load this cluster as one chunk. 549 */ 550 #if 0 551 printf("Loading cluster %d: 0x%lx / 0x%lx\n", i, 552 pfn0, pfn1); 553 #endif 554 uvm_page_physload(pfn0, pfn1, pfn0, pfn1, 555 VM_FREELIST_DEFAULT); 556 } 557 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 558 } 559 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 560 } 561 562 /* 563 * Dump out the MDDT if it looks odd... 564 */ 565 if (mddtweird) { 566 printf("\n"); 567 printf("complete memory cluster information:\n"); 568 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 569 printf("mddt %d:\n", i); 570 printf("\tpfn %lx\n", 571 mddtp->mddt_clusters[i].mddt_pfn); 572 printf("\tcnt %lx\n", 573 mddtp->mddt_clusters[i].mddt_pg_cnt); 574 printf("\ttest %lx\n", 575 mddtp->mddt_clusters[i].mddt_pg_test); 576 printf("\tbva %lx\n", 577 mddtp->mddt_clusters[i].mddt_v_bitaddr); 578 printf("\tbpa %lx\n", 579 mddtp->mddt_clusters[i].mddt_p_bitaddr); 580 printf("\tbcksum %lx\n", 581 mddtp->mddt_clusters[i].mddt_bit_cksum); 582 printf("\tusage %lx\n", 583 mddtp->mddt_clusters[i].mddt_usage); 584 } 585 printf("\n"); 586 } 587 588 if (totalphysmem == 0) 589 panic("can't happen: system seems to have no memory!"); 590 maxmem = physmem; 591 #if 0 592 printf("totalphysmem = %d\n", totalphysmem); 593 printf("physmem = %d\n", physmem); 594 printf("resvmem = %d\n", resvmem); 595 printf("unusedmem = %d\n", unusedmem); 596 printf("unknownmem = %d\n", unknownmem); 597 #endif 598 599 /* 600 * Initialize error message buffer (at end of core). 601 */ 602 { 603 vsize_t sz = (vsize_t)round_page(MSGBUFSIZE); 604 vsize_t reqsz = sz; 605 606 vps = &vm_physmem[vm_nphysseg - 1]; 607 608 /* shrink so that it'll fit in the last segment */ 609 if ((vps->avail_end - vps->avail_start) < atop(sz)) 610 sz = ptoa(vps->avail_end - vps->avail_start); 611 612 vps->end -= atop(sz); 613 vps->avail_end -= atop(sz); 614 msgbufaddr = (caddr_t) ALPHA_PHYS_TO_K0SEG(ptoa(vps->end)); 615 initmsgbuf(msgbufaddr, sz); 616 617 /* Remove the last segment if it now has no pages. */ 618 if (vps->start == vps->end) 619 vm_nphysseg--; 620 621 /* warn if the message buffer had to be shrunk */ 622 if (sz != reqsz) 623 printf("WARNING: %ld bytes not available for msgbuf " 624 "in last cluster (%ld used)\n", reqsz, sz); 625 626 } 627 628 /* 629 * NOTE: It is safe to use uvm_pageboot_alloc() before 630 * pmap_bootstrap() because our pmap_virtual_space() 631 * returns compile-time constants. 632 */ 633 634 /* 635 * Init mapping for u page(s) for proc 0 636 */ 637 proc0.p_addr = proc0paddr = 638 (struct user *)uvm_pageboot_alloc(UPAGES * PAGE_SIZE); 639 640 /* 641 * Allocate space for system data structures. These data structures 642 * are allocated here instead of cpu_startup() because physical 643 * memory is directly addressable. We don't have to map these into 644 * virtual address space. 645 */ 646 size = (vsize_t)allocsys(NULL, NULL); 647 v = (caddr_t)uvm_pageboot_alloc(size); 648 if ((allocsys(v, NULL) - v) != size) 649 panic("alpha_init: table size inconsistency"); 650 651 /* 652 * Initialize the virtual memory system, and set the 653 * page table base register in proc 0's PCB. 654 */ 655 pmap_bootstrap(ALPHA_PHYS_TO_K0SEG(ptb << PGSHIFT), 656 hwrpb->rpb_max_asn, hwrpb->rpb_pcs_cnt); 657 658 /* 659 * Initialize the rest of proc 0's PCB, and cache its physical 660 * address. 661 */ 662 proc0.p_md.md_pcbpaddr = 663 (struct pcb *)ALPHA_K0SEG_TO_PHYS((vaddr_t)&proc0paddr->u_pcb); 664 665 /* 666 * Set the kernel sp, reserving space for an (empty) trapframe, 667 * and make proc0's trapframe pointer point to it for sanity. 668 */ 669 proc0paddr->u_pcb.pcb_hw.apcb_ksp = 670 (u_int64_t)proc0paddr + USPACE - sizeof(struct trapframe); 671 proc0.p_md.md_tf = 672 (struct trapframe *)proc0paddr->u_pcb.pcb_hw.apcb_ksp; 673 simple_lock_init(&proc0paddr->u_pcb.pcb_fpcpu_slock); 674 675 /* 676 * Initialize the primary CPU's idle PCB to proc0's. In a 677 * MULTIPROCESSOR configuration, each CPU will later get 678 * its own idle PCB when autoconfiguration runs. 679 */ 680 ci->ci_idle_pcb = &proc0paddr->u_pcb; 681 ci->ci_idle_pcb_paddr = (u_long)proc0.p_md.md_pcbpaddr; 682 683 /* Indicate that proc0 has a CPU. */ 684 proc0.p_cpu = ci; 685 686 /* 687 * Look at arguments passed to us and compute boothowto. 688 */ 689 690 boothowto = RB_SINGLE; 691 #ifdef KADB 692 boothowto |= RB_KDB; 693 #endif 694 for (p = bootinfo.boot_flags; p && *p != '\0'; p++) { 695 /* 696 * Note that we'd really like to differentiate case here, 697 * but the Alpha AXP Architecture Reference Manual 698 * says that we shouldn't. 699 */ 700 switch (*p) { 701 case 'a': /* autoboot */ 702 case 'A': 703 boothowto &= ~RB_SINGLE; 704 break; 705 706 #ifdef DEBUG 707 case 'c': /* crash dump immediately after autoconfig */ 708 case 'C': 709 boothowto |= RB_DUMP; 710 break; 711 #endif 712 713 #if defined(KGDB) || defined(DDB) 714 case 'd': /* break into the kernel debugger ASAP */ 715 case 'D': 716 boothowto |= RB_KDB; 717 break; 718 #endif 719 720 case 'h': /* always halt, never reboot */ 721 case 'H': 722 boothowto |= RB_HALT; 723 break; 724 725 #if 0 726 case 'm': /* mini root present in memory */ 727 case 'M': 728 boothowto |= RB_MINIROOT; 729 break; 730 #endif 731 732 case 'n': /* askname */ 733 case 'N': 734 boothowto |= RB_ASKNAME; 735 break; 736 737 case 's': /* single-user (default, supported for sanity) */ 738 case 'S': 739 boothowto |= RB_SINGLE; 740 break; 741 742 case 'q': /* quiet boot */ 743 case 'Q': 744 boothowto |= AB_QUIET; 745 break; 746 747 case 'v': /* verbose boot */ 748 case 'V': 749 boothowto |= AB_VERBOSE; 750 break; 751 752 case '-': 753 /* 754 * Just ignore this. It's not required, but it's 755 * common for it to be passed regardless. 756 */ 757 break; 758 759 default: 760 printf("Unrecognized boot flag '%c'.\n", *p); 761 break; 762 } 763 } 764 765 766 /* 767 * Figure out the number of cpus in the box, from RPB fields. 768 * Really. We mean it. 769 */ 770 for (i = 0; i < hwrpb->rpb_pcs_cnt; i++) { 771 struct pcs *pcsp; 772 773 pcsp = LOCATE_PCS(hwrpb, i); 774 if ((pcsp->pcs_flags & PCS_PP) != 0) 775 ncpus++; 776 } 777 778 /* 779 * Initialize debuggers, and break into them if appropriate. 780 */ 781 #ifdef DDB 782 ddb_init((int)((u_int64_t)ksym_end - (u_int64_t)ksym_start), 783 ksym_start, ksym_end); 784 #endif 785 786 if (boothowto & RB_KDB) { 787 #if defined(KGDB) 788 kgdb_debug_init = 1; 789 kgdb_connect(1); 790 #elif defined(DDB) 791 Debugger(); 792 #endif 793 } 794 795 /* 796 * Figure out our clock frequency, from RPB fields. 797 */ 798 hz = hwrpb->rpb_intr_freq >> 12; 799 if (!(60 <= hz && hz <= 10240)) { 800 hz = 1024; 801 #ifdef DIAGNOSTIC 802 printf("WARNING: unbelievable rpb_intr_freq: %ld (%d hz)\n", 803 hwrpb->rpb_intr_freq, hz); 804 #endif 805 } 806 } 807 808 void 809 consinit() 810 { 811 812 /* 813 * Everything related to console initialization is done 814 * in alpha_init(). 815 */ 816 #if defined(DIAGNOSTIC) && defined(_PMAP_MAY_USE_PROM_CONSOLE) 817 printf("consinit: %susing prom console\n", 818 pmap_uses_prom_console() ? "" : "not "); 819 #endif 820 } 821 822 #include "pckbc.h" 823 #include "pckbd.h" 824 #if (NPCKBC > 0) && (NPCKBD == 0) 825 826 #include <dev/ic/pckbcvar.h> 827 828 /* 829 * This is called by the pbkbc driver if no pckbd is configured. 830 * On the i386, it is used to glue in the old, deprecated console 831 * code. On the Alpha, it does nothing. 832 */ 833 int 834 pckbc_machdep_cnattach(kbctag, kbcslot) 835 pckbc_tag_t kbctag; 836 pckbc_slot_t kbcslot; 837 { 838 839 return (ENXIO); 840 } 841 #endif /* NPCKBC > 0 && NPCKBD == 0 */ 842 843 void 844 cpu_startup() 845 { 846 register unsigned i; 847 int base, residual; 848 vaddr_t minaddr, maxaddr; 849 vsize_t size; 850 char pbuf[9]; 851 #if defined(DEBUG) 852 extern int pmapdebug; 853 int opmapdebug = pmapdebug; 854 855 pmapdebug = 0; 856 #endif 857 858 /* 859 * Good {morning,afternoon,evening,night}. 860 */ 861 printf(version); 862 identifycpu(); 863 format_bytes(pbuf, sizeof(pbuf), ptoa(totalphysmem)); 864 printf("total memory = %s\n", pbuf); 865 format_bytes(pbuf, sizeof(pbuf), ptoa(resvmem)); 866 printf("(%s reserved for PROM, ", pbuf); 867 format_bytes(pbuf, sizeof(pbuf), ptoa(physmem)); 868 printf("%s used by NetBSD)\n", pbuf); 869 if (unusedmem) { 870 format_bytes(pbuf, sizeof(pbuf), ptoa(unusedmem)); 871 printf("WARNING: unused memory = %s\n", pbuf); 872 } 873 if (unknownmem) { 874 format_bytes(pbuf, sizeof(pbuf), ptoa(unknownmem)); 875 printf("WARNING: %s of memory with unknown purpose\n", pbuf); 876 } 877 878 /* 879 * Allocate virtual address space for file I/O buffers. 880 * Note they are different than the array of headers, 'buf', 881 * and usually occupy more virtual memory than physical. 882 */ 883 size = MAXBSIZE * nbuf; 884 if (uvm_map(kernel_map, (vaddr_t *) &buffers, round_page(size), 885 NULL, UVM_UNKNOWN_OFFSET, 0, 886 UVM_MAPFLAG(UVM_PROT_NONE, UVM_PROT_NONE, UVM_INH_NONE, 887 UVM_ADV_NORMAL, 0)) != 0) 888 panic("startup: cannot allocate VM for buffers"); 889 base = bufpages / nbuf; 890 residual = bufpages % nbuf; 891 for (i = 0; i < nbuf; i++) { 892 vsize_t curbufsize; 893 vaddr_t curbuf; 894 struct vm_page *pg; 895 896 /* 897 * Each buffer has MAXBSIZE bytes of VM space allocated. Of 898 * that MAXBSIZE space, we allocate and map (base+1) pages 899 * for the first "residual" buffers, and then we allocate 900 * "base" pages for the rest. 901 */ 902 curbuf = (vaddr_t) buffers + (i * MAXBSIZE); 903 curbufsize = NBPG * ((i < residual) ? (base+1) : base); 904 905 while (curbufsize) { 906 pg = uvm_pagealloc(NULL, 0, NULL, 0); 907 if (pg == NULL) 908 panic("cpu_startup: not enough memory for " 909 "buffer cache"); 910 pmap_kenter_pa(curbuf, VM_PAGE_TO_PHYS(pg), 911 VM_PROT_READ|VM_PROT_WRITE); 912 curbuf += PAGE_SIZE; 913 curbufsize -= PAGE_SIZE; 914 } 915 } 916 pmap_update(); 917 918 /* 919 * Allocate a submap for exec arguments. This map effectively 920 * limits the number of processes exec'ing at any time. 921 */ 922 exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 923 16 * NCARGS, VM_MAP_PAGEABLE, FALSE, NULL); 924 925 /* 926 * Allocate a submap for physio 927 */ 928 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 929 VM_PHYS_SIZE, 0, FALSE, NULL); 930 931 /* 932 * No need to allocate an mbuf cluster submap. Mbuf clusters 933 * are allocated via the pool allocator, and we use K0SEG to 934 * map those pages. 935 */ 936 937 #if defined(DEBUG) 938 pmapdebug = opmapdebug; 939 #endif 940 format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 941 printf("avail memory = %s\n", pbuf); 942 #if 0 943 { 944 extern u_long pmap_pages_stolen; 945 946 format_bytes(pbuf, sizeof(pbuf), pmap_pages_stolen * PAGE_SIZE); 947 printf("stolen memory for VM structures = %s\n", pbuf); 948 } 949 #endif 950 format_bytes(pbuf, sizeof(pbuf), bufpages * NBPG); 951 printf("using %ld buffers containing %s of memory\n", (long)nbuf, pbuf); 952 953 /* 954 * Set up buffers, so they can be used to read disk labels. 955 */ 956 bufinit(); 957 958 /* 959 * Set up the HWPCB so that it's safe to configure secondary 960 * CPUs. 961 */ 962 hwrpb_primary_init(); 963 } 964 965 /* 966 * Retrieve the platform name from the DSR. 967 */ 968 const char * 969 alpha_dsr_sysname() 970 { 971 struct dsrdb *dsr; 972 const char *sysname; 973 974 /* 975 * DSR does not exist on early HWRPB versions. 976 */ 977 if (hwrpb->rpb_version < HWRPB_DSRDB_MINVERS) 978 return (NULL); 979 980 dsr = (struct dsrdb *)(((caddr_t)hwrpb) + hwrpb->rpb_dsrdb_off); 981 sysname = (const char *)((caddr_t)dsr + (dsr->dsr_sysname_off + 982 sizeof(u_int64_t))); 983 return (sysname); 984 } 985 986 /* 987 * Lookup the system specified system variation in the provided table, 988 * returning the model string on match. 989 */ 990 const char * 991 alpha_variation_name(variation, avtp) 992 u_int64_t variation; 993 const struct alpha_variation_table *avtp; 994 { 995 int i; 996 997 for (i = 0; avtp[i].avt_model != NULL; i++) 998 if (avtp[i].avt_variation == variation) 999 return (avtp[i].avt_model); 1000 return (NULL); 1001 } 1002 1003 /* 1004 * Generate a default platform name based for unknown system variations. 1005 */ 1006 const char * 1007 alpha_unknown_sysname() 1008 { 1009 static char s[128]; /* safe size */ 1010 1011 sprintf(s, "%s family, unknown model variation 0x%lx", 1012 platform.family, hwrpb->rpb_variation & SV_ST_MASK); 1013 return ((const char *)s); 1014 } 1015 1016 void 1017 identifycpu() 1018 { 1019 char *s; 1020 int i; 1021 1022 /* 1023 * print out CPU identification information. 1024 */ 1025 printf("%s", cpu_model); 1026 for(s = cpu_model; *s; ++s) 1027 if(strncasecmp(s, "MHz", 3) == 0) 1028 goto skipMHz; 1029 printf(", %ldMHz", hwrpb->rpb_cc_freq / 1000000); 1030 skipMHz: 1031 printf(", s/n "); 1032 for (i = 0; i < 10; i++) 1033 printf("%c", hwrpb->rpb_ssn[i]); 1034 printf("\n"); 1035 printf("%ld byte page size, %d processor%s.\n", 1036 hwrpb->rpb_page_size, ncpus, ncpus == 1 ? "" : "s"); 1037 #if 0 1038 /* this isn't defined for any systems that we run on? */ 1039 printf("serial number 0x%lx 0x%lx\n", 1040 ((long *)hwrpb->rpb_ssn)[0], ((long *)hwrpb->rpb_ssn)[1]); 1041 1042 /* and these aren't particularly useful! */ 1043 printf("variation: 0x%lx, revision 0x%lx\n", 1044 hwrpb->rpb_variation, *(long *)hwrpb->rpb_revision); 1045 #endif 1046 } 1047 1048 int waittime = -1; 1049 struct pcb dumppcb; 1050 1051 void 1052 cpu_reboot(howto, bootstr) 1053 int howto; 1054 char *bootstr; 1055 { 1056 #if defined(MULTIPROCESSOR) 1057 u_long cpu_id = cpu_number(); 1058 u_long wait_mask = (1UL << cpu_id) | 1059 (1UL << hwrpb->rpb_primary_cpu_id); 1060 int i; 1061 #endif 1062 1063 /* If "always halt" was specified as a boot flag, obey. */ 1064 if ((boothowto & RB_HALT) != 0) 1065 howto |= RB_HALT; 1066 1067 boothowto = howto; 1068 1069 /* If system is cold, just halt. */ 1070 if (cold) { 1071 boothowto |= RB_HALT; 1072 goto haltsys; 1073 } 1074 1075 if ((boothowto & RB_NOSYNC) == 0 && waittime < 0) { 1076 waittime = 0; 1077 vfs_shutdown(); 1078 /* 1079 * If we've been adjusting the clock, the todr 1080 * will be out of synch; adjust it now. 1081 */ 1082 resettodr(); 1083 } 1084 1085 /* Disable interrupts. */ 1086 splhigh(); 1087 1088 #if defined(MULTIPROCESSOR) 1089 /* 1090 * Halt all other CPUs. If we're not the primary, the 1091 * primary will spin, waiting for us to halt. 1092 */ 1093 alpha_broadcast_ipi(ALPHA_IPI_HALT); 1094 1095 for (i = 0; i < 10000; i++) { 1096 alpha_mb(); 1097 if (cpus_running == wait_mask) 1098 break; 1099 delay(1000); 1100 } 1101 alpha_mb(); 1102 if (cpus_running != wait_mask) 1103 printf("WARNING: Unable to halt secondary CPUs (0x%lx)\n", 1104 cpus_running); 1105 #endif /* MULTIPROCESSOR */ 1106 1107 /* If rebooting and a dump is requested do it. */ 1108 #if 0 1109 if ((boothowto & (RB_DUMP | RB_HALT)) == RB_DUMP) 1110 #else 1111 if (boothowto & RB_DUMP) 1112 #endif 1113 dumpsys(); 1114 1115 haltsys: 1116 1117 /* run any shutdown hooks */ 1118 doshutdownhooks(); 1119 1120 #ifdef BOOTKEY 1121 printf("hit any key to %s...\n", howto & RB_HALT ? "halt" : "reboot"); 1122 cnpollc(1); /* for proper keyboard command handling */ 1123 cngetc(); 1124 cnpollc(0); 1125 printf("\n"); 1126 #endif 1127 1128 /* Finally, powerdown/halt/reboot the system. */ 1129 if ((boothowto & RB_POWERDOWN) == RB_POWERDOWN && 1130 platform.powerdown != NULL) { 1131 (*platform.powerdown)(); 1132 printf("WARNING: powerdown failed!\n"); 1133 } 1134 printf("%s\n\n", (boothowto & RB_HALT) ? "halted." : "rebooting..."); 1135 #if defined(MULTIPROCESSOR) 1136 if (cpu_id != hwrpb->rpb_primary_cpu_id) 1137 cpu_halt(); 1138 else 1139 #endif 1140 prom_halt(boothowto & RB_HALT); 1141 /*NOTREACHED*/ 1142 } 1143 1144 /* 1145 * These variables are needed by /sbin/savecore 1146 */ 1147 u_long dumpmag = 0x8fca0101; /* magic number */ 1148 int dumpsize = 0; /* pages */ 1149 long dumplo = 0; /* blocks */ 1150 1151 /* 1152 * cpu_dumpsize: calculate size of machine-dependent kernel core dump headers. 1153 */ 1154 int 1155 cpu_dumpsize() 1156 { 1157 int size; 1158 1159 size = ALIGN(sizeof(kcore_seg_t)) + ALIGN(sizeof(cpu_kcore_hdr_t)) + 1160 ALIGN(mem_cluster_cnt * sizeof(phys_ram_seg_t)); 1161 if (roundup(size, dbtob(1)) != dbtob(1)) 1162 return -1; 1163 1164 return (1); 1165 } 1166 1167 /* 1168 * cpu_dump_mempagecnt: calculate size of RAM (in pages) to be dumped. 1169 */ 1170 u_long 1171 cpu_dump_mempagecnt() 1172 { 1173 u_long i, n; 1174 1175 n = 0; 1176 for (i = 0; i < mem_cluster_cnt; i++) 1177 n += atop(mem_clusters[i].size); 1178 return (n); 1179 } 1180 1181 /* 1182 * cpu_dump: dump machine-dependent kernel core dump headers. 1183 */ 1184 int 1185 cpu_dump() 1186 { 1187 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1188 char buf[dbtob(1)]; 1189 kcore_seg_t *segp; 1190 cpu_kcore_hdr_t *cpuhdrp; 1191 phys_ram_seg_t *memsegp; 1192 int i; 1193 1194 dump = bdevsw[major(dumpdev)].d_dump; 1195 1196 bzero(buf, sizeof buf); 1197 segp = (kcore_seg_t *)buf; 1198 cpuhdrp = (cpu_kcore_hdr_t *)&buf[ALIGN(sizeof(*segp))]; 1199 memsegp = (phys_ram_seg_t *)&buf[ ALIGN(sizeof(*segp)) + 1200 ALIGN(sizeof(*cpuhdrp))]; 1201 1202 /* 1203 * Generate a segment header. 1204 */ 1205 CORE_SETMAGIC(*segp, KCORE_MAGIC, MID_MACHINE, CORE_CPU); 1206 segp->c_size = dbtob(1) - ALIGN(sizeof(*segp)); 1207 1208 /* 1209 * Add the machine-dependent header info. 1210 */ 1211 cpuhdrp->lev1map_pa = ALPHA_K0SEG_TO_PHYS((vaddr_t)kernel_lev1map); 1212 cpuhdrp->page_size = PAGE_SIZE; 1213 cpuhdrp->nmemsegs = mem_cluster_cnt; 1214 1215 /* 1216 * Fill in the memory segment descriptors. 1217 */ 1218 for (i = 0; i < mem_cluster_cnt; i++) { 1219 memsegp[i].start = mem_clusters[i].start; 1220 memsegp[i].size = mem_clusters[i].size & ~PAGE_MASK; 1221 } 1222 1223 return (dump(dumpdev, dumplo, (caddr_t)buf, dbtob(1))); 1224 } 1225 1226 /* 1227 * This is called by main to set dumplo and dumpsize. 1228 * Dumps always skip the first NBPG of disk space 1229 * in case there might be a disk label stored there. 1230 * If there is extra space, put dump at the end to 1231 * reduce the chance that swapping trashes it. 1232 */ 1233 void 1234 cpu_dumpconf() 1235 { 1236 int nblks, dumpblks; /* size of dump area */ 1237 int maj; 1238 1239 if (dumpdev == NODEV) 1240 goto bad; 1241 maj = major(dumpdev); 1242 if (maj < 0 || maj >= nblkdev) 1243 panic("dumpconf: bad dumpdev=0x%x", dumpdev); 1244 if (bdevsw[maj].d_psize == NULL) 1245 goto bad; 1246 nblks = (*bdevsw[maj].d_psize)(dumpdev); 1247 if (nblks <= ctod(1)) 1248 goto bad; 1249 1250 dumpblks = cpu_dumpsize(); 1251 if (dumpblks < 0) 1252 goto bad; 1253 dumpblks += ctod(cpu_dump_mempagecnt()); 1254 1255 /* If dump won't fit (incl. room for possible label), punt. */ 1256 if (dumpblks > (nblks - ctod(1))) 1257 goto bad; 1258 1259 /* Put dump at end of partition */ 1260 dumplo = nblks - dumpblks; 1261 1262 /* dumpsize is in page units, and doesn't include headers. */ 1263 dumpsize = cpu_dump_mempagecnt(); 1264 return; 1265 1266 bad: 1267 dumpsize = 0; 1268 return; 1269 } 1270 1271 /* 1272 * Dump the kernel's image to the swap partition. 1273 */ 1274 #define BYTES_PER_DUMP NBPG 1275 1276 void 1277 dumpsys() 1278 { 1279 u_long totalbytesleft, bytes, i, n, memcl; 1280 u_long maddr; 1281 int psize; 1282 daddr_t blkno; 1283 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1284 int error; 1285 1286 /* Save registers. */ 1287 savectx(&dumppcb); 1288 1289 if (dumpdev == NODEV) 1290 return; 1291 1292 /* 1293 * For dumps during autoconfiguration, 1294 * if dump device has already configured... 1295 */ 1296 if (dumpsize == 0) 1297 cpu_dumpconf(); 1298 if (dumplo <= 0) { 1299 printf("\ndump to dev %u,%u not possible\n", major(dumpdev), 1300 minor(dumpdev)); 1301 return; 1302 } 1303 printf("\ndumping to dev %u,%u offset %ld\n", major(dumpdev), 1304 minor(dumpdev), dumplo); 1305 1306 psize = (*bdevsw[major(dumpdev)].d_psize)(dumpdev); 1307 printf("dump "); 1308 if (psize == -1) { 1309 printf("area unavailable\n"); 1310 return; 1311 } 1312 1313 /* XXX should purge all outstanding keystrokes. */ 1314 1315 if ((error = cpu_dump()) != 0) 1316 goto err; 1317 1318 totalbytesleft = ptoa(cpu_dump_mempagecnt()); 1319 blkno = dumplo + cpu_dumpsize(); 1320 dump = bdevsw[major(dumpdev)].d_dump; 1321 error = 0; 1322 1323 for (memcl = 0; memcl < mem_cluster_cnt; memcl++) { 1324 maddr = mem_clusters[memcl].start; 1325 bytes = mem_clusters[memcl].size & ~PAGE_MASK; 1326 1327 for (i = 0; i < bytes; i += n, totalbytesleft -= n) { 1328 1329 /* Print out how many MBs we to go. */ 1330 if ((totalbytesleft % (1024*1024)) == 0) 1331 printf("%ld ", totalbytesleft / (1024 * 1024)); 1332 1333 /* Limit size for next transfer. */ 1334 n = bytes - i; 1335 if (n > BYTES_PER_DUMP) 1336 n = BYTES_PER_DUMP; 1337 1338 error = (*dump)(dumpdev, blkno, 1339 (caddr_t)ALPHA_PHYS_TO_K0SEG(maddr), n); 1340 if (error) 1341 goto err; 1342 maddr += n; 1343 blkno += btodb(n); /* XXX? */ 1344 1345 /* XXX should look for keystrokes, to cancel. */ 1346 } 1347 } 1348 1349 err: 1350 switch (error) { 1351 1352 case ENXIO: 1353 printf("device bad\n"); 1354 break; 1355 1356 case EFAULT: 1357 printf("device not ready\n"); 1358 break; 1359 1360 case EINVAL: 1361 printf("area improper\n"); 1362 break; 1363 1364 case EIO: 1365 printf("i/o error\n"); 1366 break; 1367 1368 case EINTR: 1369 printf("aborted from console\n"); 1370 break; 1371 1372 case 0: 1373 printf("succeeded\n"); 1374 break; 1375 1376 default: 1377 printf("error %d\n", error); 1378 break; 1379 } 1380 printf("\n\n"); 1381 delay(1000); 1382 } 1383 1384 void 1385 frametoreg(framep, regp) 1386 struct trapframe *framep; 1387 struct reg *regp; 1388 { 1389 1390 regp->r_regs[R_V0] = framep->tf_regs[FRAME_V0]; 1391 regp->r_regs[R_T0] = framep->tf_regs[FRAME_T0]; 1392 regp->r_regs[R_T1] = framep->tf_regs[FRAME_T1]; 1393 regp->r_regs[R_T2] = framep->tf_regs[FRAME_T2]; 1394 regp->r_regs[R_T3] = framep->tf_regs[FRAME_T3]; 1395 regp->r_regs[R_T4] = framep->tf_regs[FRAME_T4]; 1396 regp->r_regs[R_T5] = framep->tf_regs[FRAME_T5]; 1397 regp->r_regs[R_T6] = framep->tf_regs[FRAME_T6]; 1398 regp->r_regs[R_T7] = framep->tf_regs[FRAME_T7]; 1399 regp->r_regs[R_S0] = framep->tf_regs[FRAME_S0]; 1400 regp->r_regs[R_S1] = framep->tf_regs[FRAME_S1]; 1401 regp->r_regs[R_S2] = framep->tf_regs[FRAME_S2]; 1402 regp->r_regs[R_S3] = framep->tf_regs[FRAME_S3]; 1403 regp->r_regs[R_S4] = framep->tf_regs[FRAME_S4]; 1404 regp->r_regs[R_S5] = framep->tf_regs[FRAME_S5]; 1405 regp->r_regs[R_S6] = framep->tf_regs[FRAME_S6]; 1406 regp->r_regs[R_A0] = framep->tf_regs[FRAME_A0]; 1407 regp->r_regs[R_A1] = framep->tf_regs[FRAME_A1]; 1408 regp->r_regs[R_A2] = framep->tf_regs[FRAME_A2]; 1409 regp->r_regs[R_A3] = framep->tf_regs[FRAME_A3]; 1410 regp->r_regs[R_A4] = framep->tf_regs[FRAME_A4]; 1411 regp->r_regs[R_A5] = framep->tf_regs[FRAME_A5]; 1412 regp->r_regs[R_T8] = framep->tf_regs[FRAME_T8]; 1413 regp->r_regs[R_T9] = framep->tf_regs[FRAME_T9]; 1414 regp->r_regs[R_T10] = framep->tf_regs[FRAME_T10]; 1415 regp->r_regs[R_T11] = framep->tf_regs[FRAME_T11]; 1416 regp->r_regs[R_RA] = framep->tf_regs[FRAME_RA]; 1417 regp->r_regs[R_T12] = framep->tf_regs[FRAME_T12]; 1418 regp->r_regs[R_AT] = framep->tf_regs[FRAME_AT]; 1419 regp->r_regs[R_GP] = framep->tf_regs[FRAME_GP]; 1420 /* regp->r_regs[R_SP] = framep->tf_regs[FRAME_SP]; XXX */ 1421 regp->r_regs[R_ZERO] = 0; 1422 } 1423 1424 void 1425 regtoframe(regp, framep) 1426 struct reg *regp; 1427 struct trapframe *framep; 1428 { 1429 1430 framep->tf_regs[FRAME_V0] = regp->r_regs[R_V0]; 1431 framep->tf_regs[FRAME_T0] = regp->r_regs[R_T0]; 1432 framep->tf_regs[FRAME_T1] = regp->r_regs[R_T1]; 1433 framep->tf_regs[FRAME_T2] = regp->r_regs[R_T2]; 1434 framep->tf_regs[FRAME_T3] = regp->r_regs[R_T3]; 1435 framep->tf_regs[FRAME_T4] = regp->r_regs[R_T4]; 1436 framep->tf_regs[FRAME_T5] = regp->r_regs[R_T5]; 1437 framep->tf_regs[FRAME_T6] = regp->r_regs[R_T6]; 1438 framep->tf_regs[FRAME_T7] = regp->r_regs[R_T7]; 1439 framep->tf_regs[FRAME_S0] = regp->r_regs[R_S0]; 1440 framep->tf_regs[FRAME_S1] = regp->r_regs[R_S1]; 1441 framep->tf_regs[FRAME_S2] = regp->r_regs[R_S2]; 1442 framep->tf_regs[FRAME_S3] = regp->r_regs[R_S3]; 1443 framep->tf_regs[FRAME_S4] = regp->r_regs[R_S4]; 1444 framep->tf_regs[FRAME_S5] = regp->r_regs[R_S5]; 1445 framep->tf_regs[FRAME_S6] = regp->r_regs[R_S6]; 1446 framep->tf_regs[FRAME_A0] = regp->r_regs[R_A0]; 1447 framep->tf_regs[FRAME_A1] = regp->r_regs[R_A1]; 1448 framep->tf_regs[FRAME_A2] = regp->r_regs[R_A2]; 1449 framep->tf_regs[FRAME_A3] = regp->r_regs[R_A3]; 1450 framep->tf_regs[FRAME_A4] = regp->r_regs[R_A4]; 1451 framep->tf_regs[FRAME_A5] = regp->r_regs[R_A5]; 1452 framep->tf_regs[FRAME_T8] = regp->r_regs[R_T8]; 1453 framep->tf_regs[FRAME_T9] = regp->r_regs[R_T9]; 1454 framep->tf_regs[FRAME_T10] = regp->r_regs[R_T10]; 1455 framep->tf_regs[FRAME_T11] = regp->r_regs[R_T11]; 1456 framep->tf_regs[FRAME_RA] = regp->r_regs[R_RA]; 1457 framep->tf_regs[FRAME_T12] = regp->r_regs[R_T12]; 1458 framep->tf_regs[FRAME_AT] = regp->r_regs[R_AT]; 1459 framep->tf_regs[FRAME_GP] = regp->r_regs[R_GP]; 1460 /* framep->tf_regs[FRAME_SP] = regp->r_regs[R_SP]; XXX */ 1461 /* ??? = regp->r_regs[R_ZERO]; */ 1462 } 1463 1464 void 1465 printregs(regp) 1466 struct reg *regp; 1467 { 1468 int i; 1469 1470 for (i = 0; i < 32; i++) 1471 printf("R%d:\t0x%016lx%s", i, regp->r_regs[i], 1472 i & 1 ? "\n" : "\t"); 1473 } 1474 1475 void 1476 regdump(framep) 1477 struct trapframe *framep; 1478 { 1479 struct reg reg; 1480 1481 frametoreg(framep, ®); 1482 reg.r_regs[R_SP] = alpha_pal_rdusp(); 1483 1484 printf("REGISTERS:\n"); 1485 printregs(®); 1486 } 1487 1488 1489 /* 1490 * Send an interrupt to process. 1491 */ 1492 void 1493 sendsig(catcher, sig, mask, code) 1494 sig_t catcher; 1495 int sig; 1496 sigset_t *mask; 1497 u_long code; 1498 { 1499 struct proc *p = curproc; 1500 struct sigcontext *scp, ksc; 1501 struct trapframe *frame; 1502 int onstack, fsize, rndfsize; 1503 1504 frame = p->p_md.md_tf; 1505 1506 /* Do we need to jump onto the signal stack? */ 1507 onstack = 1508 (p->p_sigctx.ps_sigstk.ss_flags & (SS_DISABLE | SS_ONSTACK)) == 0 && 1509 (SIGACTION(p, sig).sa_flags & SA_ONSTACK) != 0; 1510 1511 /* Allocate space for the signal handler context. */ 1512 fsize = sizeof(ksc); 1513 rndfsize = ((fsize + 15) / 16) * 16; 1514 1515 if (onstack) 1516 scp = (struct sigcontext *)((caddr_t)p->p_sigctx.ps_sigstk.ss_sp + 1517 p->p_sigctx.ps_sigstk.ss_size); 1518 else 1519 scp = (struct sigcontext *)(alpha_pal_rdusp()); 1520 scp = (struct sigcontext *)((caddr_t)scp - rndfsize); 1521 1522 #ifdef DEBUG 1523 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1524 printf("sendsig(%d): sig %d ssp %p usp %p\n", p->p_pid, 1525 sig, &onstack, scp); 1526 #endif 1527 1528 /* Build stack frame for signal trampoline. */ 1529 ksc.sc_pc = frame->tf_regs[FRAME_PC]; 1530 ksc.sc_ps = frame->tf_regs[FRAME_PS]; 1531 1532 /* Save register context. */ 1533 frametoreg(frame, (struct reg *)ksc.sc_regs); 1534 ksc.sc_regs[R_ZERO] = 0xACEDBADE; /* magic number */ 1535 ksc.sc_regs[R_SP] = alpha_pal_rdusp(); 1536 1537 /* save the floating-point state, if necessary, then copy it. */ 1538 if (p->p_addr->u_pcb.pcb_fpcpu != NULL) 1539 fpusave_proc(p, 1); 1540 ksc.sc_ownedfp = p->p_md.md_flags & MDP_FPUSED; 1541 bcopy(&p->p_addr->u_pcb.pcb_fp, (struct fpreg *)ksc.sc_fpregs, 1542 sizeof(struct fpreg)); 1543 ksc.sc_fp_control = 0; /* XXX ? */ 1544 bzero(ksc.sc_reserved, sizeof ksc.sc_reserved); /* XXX */ 1545 bzero(ksc.sc_xxx, sizeof ksc.sc_xxx); /* XXX */ 1546 1547 /* Save signal stack. */ 1548 ksc.sc_onstack = p->p_sigctx.ps_sigstk.ss_flags & SS_ONSTACK; 1549 1550 /* Save signal mask. */ 1551 ksc.sc_mask = *mask; 1552 1553 #ifdef COMPAT_13 1554 /* 1555 * XXX We always have to save an old style signal mask because 1556 * XXX we might be delivering a signal to a process which will 1557 * XXX escape from the signal in a non-standard way and invoke 1558 * XXX sigreturn() directly. 1559 */ 1560 { 1561 /* Note: it's a long in the stack frame. */ 1562 sigset13_t mask13; 1563 1564 native_sigset_to_sigset13(mask, &mask13); 1565 ksc.__sc_mask13 = mask13; 1566 } 1567 #endif 1568 1569 #ifdef COMPAT_OSF1 1570 /* 1571 * XXX Create an OSF/1-style sigcontext and associated goo. 1572 */ 1573 #endif 1574 1575 if (copyout(&ksc, (caddr_t)scp, fsize) != 0) { 1576 /* 1577 * Process has trashed its stack; give it an illegal 1578 * instruction to halt it in its tracks. 1579 */ 1580 #ifdef DEBUG 1581 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1582 printf("sendsig(%d): copyout failed on sig %d\n", 1583 p->p_pid, sig); 1584 #endif 1585 sigexit(p, SIGILL); 1586 /* NOTREACHED */ 1587 } 1588 #ifdef DEBUG 1589 if (sigdebug & SDB_FOLLOW) 1590 printf("sendsig(%d): sig %d scp %p code %lx\n", p->p_pid, sig, 1591 scp, code); 1592 #endif 1593 1594 /* Set up the registers to return to sigcode. */ 1595 frame->tf_regs[FRAME_PC] = (u_int64_t)p->p_sigctx.ps_sigcode; 1596 frame->tf_regs[FRAME_A0] = sig; 1597 frame->tf_regs[FRAME_A1] = code; 1598 frame->tf_regs[FRAME_A2] = (u_int64_t)scp; 1599 frame->tf_regs[FRAME_T12] = (u_int64_t)catcher; /* t12 is pv */ 1600 alpha_pal_wrusp((unsigned long)scp); 1601 1602 /* Remember that we're now on the signal stack. */ 1603 if (onstack) 1604 p->p_sigctx.ps_sigstk.ss_flags |= SS_ONSTACK; 1605 1606 #ifdef DEBUG 1607 if (sigdebug & SDB_FOLLOW) 1608 printf("sendsig(%d): pc %lx, catcher %lx\n", p->p_pid, 1609 frame->tf_regs[FRAME_PC], frame->tf_regs[FRAME_A3]); 1610 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1611 printf("sendsig(%d): sig %d returns\n", 1612 p->p_pid, sig); 1613 #endif 1614 } 1615 1616 /* 1617 * System call to cleanup state after a signal 1618 * has been taken. Reset signal mask and 1619 * stack state from context left by sendsig (above). 1620 * Return to previous pc and psl as specified by 1621 * context left by sendsig. Check carefully to 1622 * make sure that the user has not modified the 1623 * psl to gain improper privileges or to cause 1624 * a machine fault. 1625 */ 1626 /* ARGSUSED */ 1627 int 1628 sys___sigreturn14(p, v, retval) 1629 struct proc *p; 1630 void *v; 1631 register_t *retval; 1632 { 1633 struct sys___sigreturn14_args /* { 1634 syscallarg(struct sigcontext *) sigcntxp; 1635 } */ *uap = v; 1636 struct sigcontext *scp, ksc; 1637 1638 /* 1639 * The trampoline code hands us the context. 1640 * It is unsafe to keep track of it ourselves, in the event that a 1641 * program jumps out of a signal handler. 1642 */ 1643 scp = SCARG(uap, sigcntxp); 1644 #ifdef DEBUG 1645 if (sigdebug & SDB_FOLLOW) 1646 printf("sigreturn: pid %d, scp %p\n", p->p_pid, scp); 1647 #endif 1648 if (ALIGN(scp) != (u_int64_t)scp) 1649 return (EINVAL); 1650 1651 if (copyin((caddr_t)scp, &ksc, sizeof(ksc)) != 0) 1652 return (EFAULT); 1653 1654 if (ksc.sc_regs[R_ZERO] != 0xACEDBADE) /* magic number */ 1655 return (EINVAL); 1656 1657 /* Restore register context. */ 1658 p->p_md.md_tf->tf_regs[FRAME_PC] = ksc.sc_pc; 1659 p->p_md.md_tf->tf_regs[FRAME_PS] = 1660 (ksc.sc_ps | ALPHA_PSL_USERSET) & ~ALPHA_PSL_USERCLR; 1661 1662 regtoframe((struct reg *)ksc.sc_regs, p->p_md.md_tf); 1663 alpha_pal_wrusp(ksc.sc_regs[R_SP]); 1664 1665 /* XXX ksc.sc_ownedfp ? */ 1666 if (p->p_addr->u_pcb.pcb_fpcpu != NULL) 1667 fpusave_proc(p, 0); 1668 bcopy((struct fpreg *)ksc.sc_fpregs, &p->p_addr->u_pcb.pcb_fp, 1669 sizeof(struct fpreg)); 1670 /* XXX ksc.sc_fp_control ? */ 1671 1672 /* Restore signal stack. */ 1673 if (ksc.sc_onstack & SS_ONSTACK) 1674 p->p_sigctx.ps_sigstk.ss_flags |= SS_ONSTACK; 1675 else 1676 p->p_sigctx.ps_sigstk.ss_flags &= ~SS_ONSTACK; 1677 1678 /* Restore signal mask. */ 1679 (void) sigprocmask1(p, SIG_SETMASK, &ksc.sc_mask, 0); 1680 1681 #ifdef DEBUG 1682 if (sigdebug & SDB_FOLLOW) 1683 printf("sigreturn(%d): returns\n", p->p_pid); 1684 #endif 1685 return (EJUSTRETURN); 1686 } 1687 1688 /* 1689 * machine dependent system variables. 1690 */ 1691 int 1692 cpu_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 1693 int *name; 1694 u_int namelen; 1695 void *oldp; 1696 size_t *oldlenp; 1697 void *newp; 1698 size_t newlen; 1699 struct proc *p; 1700 { 1701 dev_t consdev; 1702 1703 /* all sysctl names at this level are terminal */ 1704 if (namelen != 1) 1705 return (ENOTDIR); /* overloaded */ 1706 1707 switch (name[0]) { 1708 case CPU_CONSDEV: 1709 if (cn_tab != NULL) 1710 consdev = cn_tab->cn_dev; 1711 else 1712 consdev = NODEV; 1713 return (sysctl_rdstruct(oldp, oldlenp, newp, &consdev, 1714 sizeof consdev)); 1715 1716 case CPU_ROOT_DEVICE: 1717 return (sysctl_rdstring(oldp, oldlenp, newp, 1718 root_device->dv_xname)); 1719 1720 case CPU_UNALIGNED_PRINT: 1721 return (sysctl_int(oldp, oldlenp, newp, newlen, 1722 &alpha_unaligned_print)); 1723 1724 case CPU_UNALIGNED_FIX: 1725 return (sysctl_int(oldp, oldlenp, newp, newlen, 1726 &alpha_unaligned_fix)); 1727 1728 case CPU_UNALIGNED_SIGBUS: 1729 return (sysctl_int(oldp, oldlenp, newp, newlen, 1730 &alpha_unaligned_sigbus)); 1731 1732 case CPU_BOOTED_KERNEL: 1733 return (sysctl_rdstring(oldp, oldlenp, newp, 1734 bootinfo.booted_kernel)); 1735 1736 default: 1737 return (EOPNOTSUPP); 1738 } 1739 /* NOTREACHED */ 1740 } 1741 1742 /* 1743 * Set registers on exec. 1744 */ 1745 void 1746 setregs(p, pack, stack) 1747 register struct proc *p; 1748 struct exec_package *pack; 1749 u_long stack; 1750 { 1751 struct trapframe *tfp = p->p_md.md_tf; 1752 #ifdef DEBUG 1753 int i; 1754 #endif 1755 1756 #ifdef DEBUG 1757 /* 1758 * Crash and dump, if the user requested it. 1759 */ 1760 if (boothowto & RB_DUMP) 1761 panic("crash requested by boot flags"); 1762 #endif 1763 1764 #ifdef DEBUG 1765 for (i = 0; i < FRAME_SIZE; i++) 1766 tfp->tf_regs[i] = 0xbabefacedeadbeef; 1767 #else 1768 bzero(tfp->tf_regs, FRAME_SIZE * sizeof tfp->tf_regs[0]); 1769 #endif 1770 bzero(&p->p_addr->u_pcb.pcb_fp, sizeof p->p_addr->u_pcb.pcb_fp); 1771 p->p_addr->u_pcb.pcb_fp.fpr_cr = FPCR_INED 1772 | FPCR_UNFD 1773 | FPCR_UNDZ 1774 | FPCR_DYN(FP_RN) 1775 | FPCR_OVFD 1776 | FPCR_DZED 1777 | FPCR_INVD 1778 | FPCR_DNZ; 1779 alpha_pal_wrusp(stack); 1780 tfp->tf_regs[FRAME_PS] = ALPHA_PSL_USERSET; 1781 tfp->tf_regs[FRAME_PC] = pack->ep_entry & ~3; 1782 1783 tfp->tf_regs[FRAME_A0] = stack; /* a0 = sp */ 1784 tfp->tf_regs[FRAME_A1] = 0; /* a1 = rtld cleanup */ 1785 tfp->tf_regs[FRAME_A2] = 0; /* a2 = rtld object */ 1786 tfp->tf_regs[FRAME_A3] = (u_int64_t)PS_STRINGS; /* a3 = ps_strings */ 1787 tfp->tf_regs[FRAME_T12] = tfp->tf_regs[FRAME_PC]; /* a.k.a. PV */ 1788 1789 p->p_md.md_flags &= ~MDP_FPUSED; 1790 if (p->p_addr->u_pcb.pcb_fpcpu != NULL) 1791 fpusave_proc(p, 0); 1792 } 1793 1794 /* 1795 * Release the FPU. 1796 */ 1797 void 1798 fpusave_cpu(struct cpu_info *ci, int save) 1799 { 1800 struct proc *p; 1801 #if defined(MULTIPROCESSOR) 1802 int s; 1803 #endif 1804 1805 KDASSERT(ci == curcpu()); 1806 1807 #if defined(MULTIPROCESSOR) 1808 atomic_setbits_ulong(&ci->ci_flags, CPUF_FPUSAVE); 1809 #endif 1810 1811 p = ci->ci_fpcurproc; 1812 if (p == NULL) 1813 goto out; 1814 1815 if (save) { 1816 alpha_pal_wrfen(1); 1817 savefpstate(&p->p_addr->u_pcb.pcb_fp); 1818 } 1819 1820 alpha_pal_wrfen(0); 1821 1822 FPCPU_LOCK(&p->p_addr->u_pcb, s); 1823 1824 p->p_addr->u_pcb.pcb_fpcpu = NULL; 1825 ci->ci_fpcurproc = NULL; 1826 1827 FPCPU_UNLOCK(&p->p_addr->u_pcb, s); 1828 1829 out: 1830 #if defined(MULTIPROCESSOR) 1831 atomic_clearbits_ulong(&ci->ci_flags, CPUF_FPUSAVE); 1832 #endif 1833 return; 1834 } 1835 1836 /* 1837 * Synchronize FP state for this process. 1838 */ 1839 void 1840 fpusave_proc(struct proc *p, int save) 1841 { 1842 struct cpu_info *ci = curcpu(); 1843 struct cpu_info *oci; 1844 #if defined(MULTIPROCESSOR) 1845 u_long ipi = save ? ALPHA_IPI_SYNCH_FPU : ALPHA_IPI_DISCARD_FPU; 1846 int s, spincount; 1847 #endif 1848 1849 KDASSERT(p->p_addr != NULL); 1850 KDASSERT(p->p_flag & P_INMEM); 1851 1852 FPCPU_LOCK(&p->p_addr->u_pcb, s); 1853 1854 oci = p->p_addr->u_pcb.pcb_fpcpu; 1855 if (oci == NULL) { 1856 FPCPU_UNLOCK(&p->p_addr->u_pcb, s); 1857 return; 1858 } 1859 1860 #if defined(MULTIPROCESSOR) 1861 if (oci == ci) { 1862 KASSERT(ci->ci_fpcurproc == p); 1863 FPCPU_UNLOCK(&p->p_addr->u_pcb, s); 1864 fpusave_cpu(ci, save); 1865 return; 1866 } 1867 1868 KASSERT(oci->ci_fpcurproc == p); 1869 alpha_send_ipi(oci->ci_cpuid, ipi); 1870 FPCPU_UNLOCK(&p->p_addr->u_pcb, s); 1871 1872 spincount = 0; 1873 while (p->p_addr->u_pcb.pcb_fpcpu != NULL) { 1874 spincount++; 1875 delay(1000); /* XXX */ 1876 if (spincount > 10000) 1877 panic("fpsave ipi didn't"); 1878 } 1879 #else 1880 KASSERT(ci->ci_fpcurproc == p); 1881 FPCPU_UNLOCK(&p->p_addr->u_pcb, s); 1882 fpusave_cpu(ci, save); 1883 #endif /* MULTIPROCESSOR */ 1884 } 1885 1886 /* 1887 * The following primitives manipulate the run queues. _whichqs tells which 1888 * of the 32 queues _qs have processes in them. Setrunqueue puts processes 1889 * into queues, Remrunqueue removes them from queues. The running process is 1890 * on no queue, other processes are on a queue related to p->p_priority, 1891 * divided by 4 actually to shrink the 0-127 range of priorities into the 32 1892 * available queues. 1893 */ 1894 /* 1895 * setrunqueue(p) 1896 * proc *p; 1897 * 1898 * Call should be made at splclock(), and p->p_stat should be SRUN. 1899 */ 1900 1901 void 1902 setrunqueue(p) 1903 struct proc *p; 1904 { 1905 int bit; 1906 1907 /* firewall: p->p_back must be NULL */ 1908 if (p->p_back != NULL) 1909 panic("setrunqueue"); 1910 1911 bit = p->p_priority >> 2; 1912 sched_whichqs |= (1 << bit); 1913 p->p_forw = (struct proc *)&sched_qs[bit]; 1914 p->p_back = sched_qs[bit].ph_rlink; 1915 p->p_back->p_forw = p; 1916 sched_qs[bit].ph_rlink = p; 1917 } 1918 1919 /* 1920 * remrunqueue(p) 1921 * 1922 * Call should be made at splclock(). 1923 */ 1924 void 1925 remrunqueue(p) 1926 struct proc *p; 1927 { 1928 int bit; 1929 1930 bit = p->p_priority >> 2; 1931 if ((sched_whichqs & (1 << bit)) == 0) 1932 panic("remrunqueue"); 1933 1934 p->p_back->p_forw = p->p_forw; 1935 p->p_forw->p_back = p->p_back; 1936 p->p_back = NULL; /* for firewall checking. */ 1937 1938 if ((struct proc *)&sched_qs[bit] == sched_qs[bit].ph_link) 1939 sched_whichqs &= ~(1 << bit); 1940 } 1941 1942 /* 1943 * Return the best possible estimate of the time in the timeval 1944 * to which tvp points. Unfortunately, we can't read the hardware registers. 1945 * We guarantee that the time will be greater than the value obtained by a 1946 * previous call. 1947 * 1948 * XXX PLEASE REWRITE ME TO USE THE CYCLE COUNTER AND DEAL WITH 1949 * XXX MULTIPLE CPUs IN A SANE WAY! 1950 */ 1951 void 1952 microtime(tvp) 1953 register struct timeval *tvp; 1954 { 1955 static struct timeval lasttime; 1956 static struct simplelock microtime_slock = SIMPLELOCK_INITIALIZER; 1957 int s; 1958 1959 s = splclock(); 1960 simple_lock(µtime_slock); 1961 1962 *tvp = time; 1963 #ifdef notdef 1964 tvp->tv_usec += clkread(); 1965 while (tvp->tv_usec >= 1000000) { 1966 tvp->tv_sec++; 1967 tvp->tv_usec -= 1000000; 1968 } 1969 #endif 1970 if (tvp->tv_sec == lasttime.tv_sec && 1971 tvp->tv_usec <= lasttime.tv_usec && 1972 (tvp->tv_usec = lasttime.tv_usec + 1) >= 1000000) { 1973 tvp->tv_sec++; 1974 tvp->tv_usec -= 1000000; 1975 } 1976 lasttime = *tvp; 1977 1978 simple_unlock(µtime_slock); 1979 splx(s); 1980 } 1981 1982 /* 1983 * Wait "n" microseconds. 1984 */ 1985 void 1986 delay(n) 1987 unsigned long n; 1988 { 1989 unsigned long pcc0, pcc1, curcycle, cycles, usec; 1990 1991 if (n == 0) 1992 return; 1993 1994 pcc0 = alpha_rpcc() & 0xffffffffUL; 1995 cycles = 0; 1996 usec = 0; 1997 1998 while (usec <= n) { 1999 /* 2000 * Get the next CPU cycle count- assumes that we cannot 2001 * have had more than one 32 bit overflow. 2002 */ 2003 pcc1 = alpha_rpcc() & 0xffffffffUL; 2004 if (pcc1 < pcc0) 2005 curcycle = (pcc1 + 0x100000000UL) - pcc0; 2006 else 2007 curcycle = pcc1 - pcc0; 2008 2009 /* 2010 * We now have the number of processor cycles since we 2011 * last checked. Add the current cycle count to the 2012 * running total. If it's over cycles_per_usec, increment 2013 * the usec counter. 2014 */ 2015 cycles += curcycle; 2016 while (cycles > cycles_per_usec) { 2017 usec++; 2018 cycles -= cycles_per_usec; 2019 } 2020 pcc0 = pcc1; 2021 } 2022 } 2023 2024 #if defined(COMPAT_OSF1) || 1 /* XXX */ 2025 void cpu_exec_ecoff_setregs __P((struct proc *, struct exec_package *, 2026 u_long)); 2027 #endif 2028 2029 #if 1 /* XXX */ 2030 void 2031 cpu_exec_ecoff_setregs(p, epp, stack) 2032 struct proc *p; 2033 struct exec_package *epp; 2034 u_long stack; 2035 { 2036 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2037 2038 setregs(p, epp, stack); 2039 p->p_md.md_tf->tf_regs[FRAME_GP] = execp->a.gp_value; 2040 } 2041 2042 /* 2043 * cpu_exec_ecoff_hook(): 2044 * cpu-dependent ECOFF format hook for execve(). 2045 * 2046 * Do any machine-dependent diddling of the exec package when doing ECOFF. 2047 * 2048 */ 2049 int 2050 cpu_exec_ecoff_probe(p, epp) 2051 struct proc *p; 2052 struct exec_package *epp; 2053 { 2054 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2055 int error; 2056 2057 if (execp->f.f_magic == ECOFF_MAGIC_NETBSD_ALPHA) 2058 error = 0; 2059 else 2060 error = ENOEXEC; 2061 2062 return (error); 2063 } 2064 #endif 2065 2066 int 2067 alpha_pa_access(pa) 2068 u_long pa; 2069 { 2070 int i; 2071 2072 for (i = 0; i < mem_cluster_cnt; i++) { 2073 if (pa < mem_clusters[i].start) 2074 continue; 2075 if ((pa - mem_clusters[i].start) >= 2076 (mem_clusters[i].size & ~PAGE_MASK)) 2077 continue; 2078 return (mem_clusters[i].size & PAGE_MASK); /* prot */ 2079 } 2080 2081 /* 2082 * Address is not a memory address. If we're secure, disallow 2083 * access. Otherwise, grant read/write. 2084 */ 2085 if (securelevel > 0) 2086 return (PROT_NONE); 2087 else 2088 return (PROT_READ | PROT_WRITE); 2089 } 2090 2091 /* XXX XXX BEGIN XXX XXX */ 2092 paddr_t alpha_XXX_dmamap_or; /* XXX */ 2093 /* XXX */ 2094 paddr_t /* XXX */ 2095 alpha_XXX_dmamap(v) /* XXX */ 2096 vaddr_t v; /* XXX */ 2097 { /* XXX */ 2098 /* XXX */ 2099 return (vtophys(v) | alpha_XXX_dmamap_or); /* XXX */ 2100 } /* XXX */ 2101 /* XXX XXX END XXX XXX */ 2102 2103 char * 2104 dot_conv(x) 2105 unsigned long x; 2106 { 2107 int i; 2108 char *xc; 2109 static int next; 2110 static char space[2][20]; 2111 2112 xc = space[next ^= 1] + sizeof space[0]; 2113 *--xc = '\0'; 2114 for (i = 0;; ++i) { 2115 if (i && (i & 3) == 0) 2116 *--xc = '.'; 2117 *--xc = "0123456789abcdef"[x & 0xf]; 2118 x >>= 4; 2119 if (x == 0) 2120 break; 2121 } 2122 return xc; 2123 } 2124
Indexes created Mon Oct 06 08:10:01 GMT 2025