machdep.c revision 1.235
1 /* $NetBSD: machdep.c,v 1.235 2001/04/20 00:10:17 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 1.235 2001/04/20 00:10:17 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[cpu_id]); 249 #endif 250 251 ci = curcpu(); 252 ci->ci_cpuid = cpu_id; 253 254 /* 255 * Get critical system information (if possible, from the 256 * information provided by the boot program). 257 */ 258 bootinfo_msg = NULL; 259 if (bim == BOOTINFO_MAGIC) { 260 if (biv == 0) { /* backward compat */ 261 biv = *(u_long *)bip; 262 bip += 8; 263 } 264 switch (biv) { 265 case 1: { 266 struct bootinfo_v1 *v1p = (struct bootinfo_v1 *)bip; 267 268 bootinfo.ssym = v1p->ssym; 269 bootinfo.esym = v1p->esym; 270 /* hwrpb may not be provided by boot block in v1 */ 271 if (v1p->hwrpb != NULL) { 272 bootinfo.hwrpb_phys = 273 ((struct rpb *)v1p->hwrpb)->rpb_phys; 274 bootinfo.hwrpb_size = v1p->hwrpbsize; 275 } else { 276 bootinfo.hwrpb_phys = 277 ((struct rpb *)HWRPB_ADDR)->rpb_phys; 278 bootinfo.hwrpb_size = 279 ((struct rpb *)HWRPB_ADDR)->rpb_size; 280 } 281 bcopy(v1p->boot_flags, bootinfo.boot_flags, 282 min(sizeof v1p->boot_flags, 283 sizeof bootinfo.boot_flags)); 284 bcopy(v1p->booted_kernel, bootinfo.booted_kernel, 285 min(sizeof v1p->booted_kernel, 286 sizeof bootinfo.booted_kernel)); 287 /* booted dev not provided in bootinfo */ 288 init_prom_interface((struct rpb *) 289 ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys)); 290 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 291 sizeof bootinfo.booted_dev); 292 break; 293 } 294 default: 295 bootinfo_msg = "unknown bootinfo version"; 296 goto nobootinfo; 297 } 298 } else { 299 bootinfo_msg = "boot program did not pass bootinfo"; 300 nobootinfo: 301 bootinfo.ssym = (u_long)_end; 302 bootinfo.esym = (u_long)_end; 303 bootinfo.hwrpb_phys = ((struct rpb *)HWRPB_ADDR)->rpb_phys; 304 bootinfo.hwrpb_size = ((struct rpb *)HWRPB_ADDR)->rpb_size; 305 init_prom_interface((struct rpb *)HWRPB_ADDR); 306 prom_getenv(PROM_E_BOOTED_OSFLAGS, bootinfo.boot_flags, 307 sizeof bootinfo.boot_flags); 308 prom_getenv(PROM_E_BOOTED_FILE, bootinfo.booted_kernel, 309 sizeof bootinfo.booted_kernel); 310 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 311 sizeof bootinfo.booted_dev); 312 } 313 314 /* 315 * Initialize the kernel's mapping of the RPB. It's needed for 316 * lots of things. 317 */ 318 hwrpb = (struct rpb *)ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys); 319 320 #if defined(DEC_3000_300) || defined(DEC_3000_500) 321 if (hwrpb->rpb_type == ST_DEC_3000_300 || 322 hwrpb->rpb_type == ST_DEC_3000_500) { 323 prom_getenv(PROM_E_SCSIID, dec_3000_scsiid, 324 sizeof(dec_3000_scsiid)); 325 prom_getenv(PROM_E_SCSIFAST, dec_3000_scsifast, 326 sizeof(dec_3000_scsifast)); 327 } 328 #endif 329 330 /* 331 * Remember how many cycles there are per microsecond, 332 * so that we can use delay(). Round up, for safety. 333 */ 334 cycles_per_usec = (hwrpb->rpb_cc_freq + 999999) / 1000000; 335 336 /* 337 * Initalize the (temporary) bootstrap console interface, so 338 * we can use printf until the VM system starts being setup. 339 * The real console is initialized before then. 340 */ 341 init_bootstrap_console(); 342 343 /* OUTPUT NOW ALLOWED */ 344 345 /* delayed from above */ 346 if (bootinfo_msg) 347 printf("WARNING: %s (0x%lx, 0x%lx, 0x%lx)\n", 348 bootinfo_msg, bim, bip, biv); 349 350 /* Initialize the trap vectors on the primary processor. */ 351 trap_init(); 352 353 /* 354 * Find out what hardware we're on, and do basic initialization. 355 */ 356 cputype = hwrpb->rpb_type; 357 if (cputype < 0) { 358 /* 359 * At least some white-box systems have SRM which 360 * reports a systype that's the negative of their 361 * blue-box counterpart. 362 */ 363 cputype = -cputype; 364 } 365 c = platform_lookup(cputype); 366 if (c == NULL) { 367 platform_not_supported(); 368 /* NOTREACHED */ 369 } 370 (*c->init)(); 371 strcpy(cpu_model, platform.model); 372 373 /* 374 * Initalize the real console, so that the bootstrap console is 375 * no longer necessary. 376 */ 377 (*platform.cons_init)(); 378 379 #ifdef DIAGNOSTIC 380 /* Paranoid sanity checking */ 381 382 /* We should always be running on the primary. */ 383 assert(hwrpb->rpb_primary_cpu_id == cpu_id); 384 385 /* 386 * On single-CPU systypes, the primary should always be CPU 0, 387 * except on Alpha 8200 systems where the CPU id is related 388 * to the VID, which is related to the Turbo Laser node id. 389 */ 390 if (cputype != ST_DEC_21000) 391 assert(hwrpb->rpb_primary_cpu_id == 0); 392 #endif 393 394 /* NO MORE FIRMWARE ACCESS ALLOWED */ 395 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 396 /* 397 * XXX (unless _PMAP_MAY_USE_PROM_CONSOLE is defined and 398 * XXX pmap_uses_prom_console() evaluates to non-zero.) 399 */ 400 #endif 401 402 /* 403 * find out this system's page size 404 */ 405 PAGE_SIZE = hwrpb->rpb_page_size; 406 if (PAGE_SIZE != 8192) 407 panic("page size %d != 8192?!", PAGE_SIZE); 408 409 /* 410 * Initialize PAGE_SIZE-dependent variables. 411 */ 412 uvm_setpagesize(); 413 414 /* 415 * Find the beginning and end of the kernel (and leave a 416 * bit of space before the beginning for the bootstrap 417 * stack). 418 */ 419 kernstart = trunc_page((vaddr_t)kernel_text) - 2 * PAGE_SIZE; 420 #ifdef DDB 421 ksym_start = (void *)bootinfo.ssym; 422 ksym_end = (void *)bootinfo.esym; 423 kernend = (vaddr_t)round_page((vaddr_t)ksym_end); 424 #else 425 kernend = (vaddr_t)round_page((vaddr_t)_end); 426 #endif 427 428 kernstartpfn = atop(ALPHA_K0SEG_TO_PHYS(kernstart)); 429 kernendpfn = atop(ALPHA_K0SEG_TO_PHYS(kernend)); 430 431 /* 432 * Find out how much memory is available, by looking at 433 * the memory cluster descriptors. This also tries to do 434 * its best to detect things things that have never been seen 435 * before... 436 */ 437 mddtp = (struct mddt *)(((caddr_t)hwrpb) + hwrpb->rpb_memdat_off); 438 439 /* MDDT SANITY CHECKING */ 440 mddtweird = 0; 441 if (mddtp->mddt_cluster_cnt < 2) { 442 mddtweird = 1; 443 printf("WARNING: weird number of mem clusters: %lu\n", 444 mddtp->mddt_cluster_cnt); 445 } 446 447 #if 0 448 printf("Memory cluster count: %d\n", mddtp->mddt_cluster_cnt); 449 #endif 450 451 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 452 memc = &mddtp->mddt_clusters[i]; 453 #if 0 454 printf("MEMC %d: pfn 0x%lx cnt 0x%lx usage 0x%lx\n", i, 455 memc->mddt_pfn, memc->mddt_pg_cnt, memc->mddt_usage); 456 #endif 457 totalphysmem += memc->mddt_pg_cnt; 458 if (mem_cluster_cnt < VM_PHYSSEG_MAX) { /* XXX */ 459 mem_clusters[mem_cluster_cnt].start = 460 ptoa(memc->mddt_pfn); 461 mem_clusters[mem_cluster_cnt].size = 462 ptoa(memc->mddt_pg_cnt); 463 if (memc->mddt_usage & MDDT_mbz || 464 memc->mddt_usage & MDDT_NONVOLATILE || /* XXX */ 465 memc->mddt_usage & MDDT_PALCODE) 466 mem_clusters[mem_cluster_cnt].size |= 467 PROT_READ; 468 else 469 mem_clusters[mem_cluster_cnt].size |= 470 PROT_READ | PROT_WRITE | PROT_EXEC; 471 mem_cluster_cnt++; 472 } 473 474 if (memc->mddt_usage & MDDT_mbz) { 475 mddtweird = 1; 476 printf("WARNING: mem cluster %d has weird " 477 "usage 0x%lx\n", i, memc->mddt_usage); 478 unknownmem += memc->mddt_pg_cnt; 479 continue; 480 } 481 if (memc->mddt_usage & MDDT_NONVOLATILE) { 482 /* XXX should handle these... */ 483 printf("WARNING: skipping non-volatile mem " 484 "cluster %d\n", i); 485 unusedmem += memc->mddt_pg_cnt; 486 continue; 487 } 488 if (memc->mddt_usage & MDDT_PALCODE) { 489 resvmem += memc->mddt_pg_cnt; 490 continue; 491 } 492 493 /* 494 * We have a memory cluster available for system 495 * software use. We must determine if this cluster 496 * holds the kernel. 497 */ 498 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 499 /* 500 * XXX If the kernel uses the PROM console, we only use the 501 * XXX memory after the kernel in the first system segment, 502 * XXX to avoid clobbering prom mapping, data, etc. 503 */ 504 if (!pmap_uses_prom_console() || physmem == 0) { 505 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 506 physmem += memc->mddt_pg_cnt; 507 pfn0 = memc->mddt_pfn; 508 pfn1 = memc->mddt_pfn + memc->mddt_pg_cnt; 509 if (pfn0 <= kernstartpfn && kernendpfn <= pfn1) { 510 /* 511 * Must compute the location of the kernel 512 * within the segment. 513 */ 514 #if 0 515 printf("Cluster %d contains kernel\n", i); 516 #endif 517 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 518 if (!pmap_uses_prom_console()) { 519 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 520 if (pfn0 < kernstartpfn) { 521 /* 522 * There is a chunk before the kernel. 523 */ 524 #if 0 525 printf("Loading chunk before kernel: " 526 "0x%lx / 0x%lx\n", pfn0, kernstartpfn); 527 #endif 528 uvm_page_physload(pfn0, kernstartpfn, 529 pfn0, kernstartpfn, VM_FREELIST_DEFAULT); 530 } 531 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 532 } 533 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 534 if (kernendpfn < pfn1) { 535 /* 536 * There is a chunk after the kernel. 537 */ 538 #if 0 539 printf("Loading chunk after kernel: " 540 "0x%lx / 0x%lx\n", kernendpfn, pfn1); 541 #endif 542 uvm_page_physload(kernendpfn, pfn1, 543 kernendpfn, pfn1, VM_FREELIST_DEFAULT); 544 } 545 } else { 546 /* 547 * Just load this cluster as one chunk. 548 */ 549 #if 0 550 printf("Loading cluster %d: 0x%lx / 0x%lx\n", i, 551 pfn0, pfn1); 552 #endif 553 uvm_page_physload(pfn0, pfn1, pfn0, pfn1, 554 VM_FREELIST_DEFAULT); 555 } 556 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 557 } 558 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 559 } 560 561 /* 562 * Dump out the MDDT if it looks odd... 563 */ 564 if (mddtweird) { 565 printf("\n"); 566 printf("complete memory cluster information:\n"); 567 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 568 printf("mddt %d:\n", i); 569 printf("\tpfn %lx\n", 570 mddtp->mddt_clusters[i].mddt_pfn); 571 printf("\tcnt %lx\n", 572 mddtp->mddt_clusters[i].mddt_pg_cnt); 573 printf("\ttest %lx\n", 574 mddtp->mddt_clusters[i].mddt_pg_test); 575 printf("\tbva %lx\n", 576 mddtp->mddt_clusters[i].mddt_v_bitaddr); 577 printf("\tbpa %lx\n", 578 mddtp->mddt_clusters[i].mddt_p_bitaddr); 579 printf("\tbcksum %lx\n", 580 mddtp->mddt_clusters[i].mddt_bit_cksum); 581 printf("\tusage %lx\n", 582 mddtp->mddt_clusters[i].mddt_usage); 583 } 584 printf("\n"); 585 } 586 587 if (totalphysmem == 0) 588 panic("can't happen: system seems to have no memory!"); 589 maxmem = physmem; 590 #if 0 591 printf("totalphysmem = %d\n", totalphysmem); 592 printf("physmem = %d\n", physmem); 593 printf("resvmem = %d\n", resvmem); 594 printf("unusedmem = %d\n", unusedmem); 595 printf("unknownmem = %d\n", unknownmem); 596 #endif 597 598 /* 599 * Initialize error message buffer (at end of core). 600 */ 601 { 602 vsize_t sz = (vsize_t)round_page(MSGBUFSIZE); 603 vsize_t reqsz = sz; 604 605 vps = &vm_physmem[vm_nphysseg - 1]; 606 607 /* shrink so that it'll fit in the last segment */ 608 if ((vps->avail_end - vps->avail_start) < atop(sz)) 609 sz = ptoa(vps->avail_end - vps->avail_start); 610 611 vps->end -= atop(sz); 612 vps->avail_end -= atop(sz); 613 msgbufaddr = (caddr_t) ALPHA_PHYS_TO_K0SEG(ptoa(vps->end)); 614 initmsgbuf(msgbufaddr, sz); 615 616 /* Remove the last segment if it now has no pages. */ 617 if (vps->start == vps->end) 618 vm_nphysseg--; 619 620 /* warn if the message buffer had to be shrunk */ 621 if (sz != reqsz) 622 printf("WARNING: %ld bytes not available for msgbuf " 623 "in last cluster (%ld used)\n", reqsz, sz); 624 625 } 626 627 /* 628 * Init mapping for u page(s) for proc 0 629 */ 630 proc0.p_addr = proc0paddr = 631 (struct user *)pmap_steal_memory(UPAGES * PAGE_SIZE, NULL, NULL); 632 633 /* 634 * Allocate space for system data structures. These data structures 635 * are allocated here instead of cpu_startup() because physical 636 * memory is directly addressable. We don't have to map these into 637 * virtual address space. 638 */ 639 size = (vsize_t)allocsys(NULL, NULL); 640 v = (caddr_t)pmap_steal_memory(size, NULL, NULL); 641 if ((allocsys(v, NULL) - v) != size) 642 panic("alpha_init: table size inconsistency"); 643 644 /* 645 * Initialize the virtual memory system, and set the 646 * page table base register in proc 0's PCB. 647 */ 648 pmap_bootstrap(ALPHA_PHYS_TO_K0SEG(ptb << PGSHIFT), 649 hwrpb->rpb_max_asn, hwrpb->rpb_pcs_cnt); 650 651 /* 652 * Initialize the rest of proc 0's PCB, and cache its physical 653 * address. 654 */ 655 proc0.p_md.md_pcbpaddr = 656 (struct pcb *)ALPHA_K0SEG_TO_PHYS((vaddr_t)&proc0paddr->u_pcb); 657 658 /* 659 * Set the kernel sp, reserving space for an (empty) trapframe, 660 * and make proc0's trapframe pointer point to it for sanity. 661 */ 662 proc0paddr->u_pcb.pcb_hw.apcb_ksp = 663 (u_int64_t)proc0paddr + USPACE - sizeof(struct trapframe); 664 proc0.p_md.md_tf = 665 (struct trapframe *)proc0paddr->u_pcb.pcb_hw.apcb_ksp; 666 simple_lock_init(&proc0paddr->u_pcb.pcb_fpcpu_slock); 667 668 /* 669 * Initialize the primary CPU's idle PCB to proc0's. In a 670 * MULTIPROCESSOR configuration, each CPU will later get 671 * its own idle PCB when autoconfiguration runs. 672 */ 673 ci->ci_idle_pcb = &proc0paddr->u_pcb; 674 ci->ci_idle_pcb_paddr = (u_long)proc0.p_md.md_pcbpaddr; 675 676 /* Indicate that proc0 has a CPU. */ 677 proc0.p_cpu = ci; 678 679 /* 680 * Look at arguments passed to us and compute boothowto. 681 */ 682 683 boothowto = RB_SINGLE; 684 #ifdef KADB 685 boothowto |= RB_KDB; 686 #endif 687 for (p = bootinfo.boot_flags; p && *p != '\0'; p++) { 688 /* 689 * Note that we'd really like to differentiate case here, 690 * but the Alpha AXP Architecture Reference Manual 691 * says that we shouldn't. 692 */ 693 switch (*p) { 694 case 'a': /* autoboot */ 695 case 'A': 696 boothowto &= ~RB_SINGLE; 697 break; 698 699 #ifdef DEBUG 700 case 'c': /* crash dump immediately after autoconfig */ 701 case 'C': 702 boothowto |= RB_DUMP; 703 break; 704 #endif 705 706 #if defined(KGDB) || defined(DDB) 707 case 'd': /* break into the kernel debugger ASAP */ 708 case 'D': 709 boothowto |= RB_KDB; 710 break; 711 #endif 712 713 case 'h': /* always halt, never reboot */ 714 case 'H': 715 boothowto |= RB_HALT; 716 break; 717 718 #if 0 719 case 'm': /* mini root present in memory */ 720 case 'M': 721 boothowto |= RB_MINIROOT; 722 break; 723 #endif 724 725 case 'n': /* askname */ 726 case 'N': 727 boothowto |= RB_ASKNAME; 728 break; 729 730 case 's': /* single-user (default, supported for sanity) */ 731 case 'S': 732 boothowto |= RB_SINGLE; 733 break; 734 735 case 'q': /* quiet boot */ 736 case 'Q': 737 boothowto |= AB_QUIET; 738 break; 739 740 case 'v': /* verbose boot */ 741 case 'V': 742 boothowto |= AB_VERBOSE; 743 break; 744 745 case '-': 746 /* 747 * Just ignore this. It's not required, but it's 748 * common for it to be passed regardless. 749 */ 750 break; 751 752 default: 753 printf("Unrecognized boot flag '%c'.\n", *p); 754 break; 755 } 756 } 757 758 759 /* 760 * Figure out the number of cpus in the box, from RPB fields. 761 * Really. We mean it. 762 */ 763 for (i = 0; i < hwrpb->rpb_pcs_cnt; i++) { 764 struct pcs *pcsp; 765 766 pcsp = LOCATE_PCS(hwrpb, i); 767 if ((pcsp->pcs_flags & PCS_PP) != 0) 768 ncpus++; 769 } 770 771 /* 772 * Initialize debuggers, and break into them if appropriate. 773 */ 774 #ifdef DDB 775 ddb_init((int)((u_int64_t)ksym_end - (u_int64_t)ksym_start), 776 ksym_start, ksym_end); 777 #endif 778 779 if (boothowto & RB_KDB) { 780 #if defined(KGDB) 781 kgdb_debug_init = 1; 782 kgdb_connect(1); 783 #elif defined(DDB) 784 Debugger(); 785 #endif 786 } 787 788 /* 789 * Figure out our clock frequency, from RPB fields. 790 */ 791 hz = hwrpb->rpb_intr_freq >> 12; 792 if (!(60 <= hz && hz <= 10240)) { 793 hz = 1024; 794 #ifdef DIAGNOSTIC 795 printf("WARNING: unbelievable rpb_intr_freq: %ld (%d hz)\n", 796 hwrpb->rpb_intr_freq, hz); 797 #endif 798 } 799 } 800 801 void 802 consinit() 803 { 804 805 /* 806 * Everything related to console initialization is done 807 * in alpha_init(). 808 */ 809 #if defined(DIAGNOSTIC) && defined(_PMAP_MAY_USE_PROM_CONSOLE) 810 printf("consinit: %susing prom console\n", 811 pmap_uses_prom_console() ? "" : "not "); 812 #endif 813 } 814 815 #include "pckbc.h" 816 #include "pckbd.h" 817 #if (NPCKBC > 0) && (NPCKBD == 0) 818 819 #include <dev/ic/pckbcvar.h> 820 821 /* 822 * This is called by the pbkbc driver if no pckbd is configured. 823 * On the i386, it is used to glue in the old, deprecated console 824 * code. On the Alpha, it does nothing. 825 */ 826 int 827 pckbc_machdep_cnattach(kbctag, kbcslot) 828 pckbc_tag_t kbctag; 829 pckbc_slot_t kbcslot; 830 { 831 832 return (ENXIO); 833 } 834 #endif /* NPCKBC > 0 && NPCKBD == 0 */ 835 836 void 837 cpu_startup() 838 { 839 register unsigned i; 840 int base, residual; 841 vaddr_t minaddr, maxaddr; 842 vsize_t size; 843 char pbuf[9]; 844 #if defined(DEBUG) 845 extern int pmapdebug; 846 int opmapdebug = pmapdebug; 847 848 pmapdebug = 0; 849 #endif 850 851 /* 852 * Good {morning,afternoon,evening,night}. 853 */ 854 printf(version); 855 identifycpu(); 856 format_bytes(pbuf, sizeof(pbuf), ptoa(totalphysmem)); 857 printf("total memory = %s\n", pbuf); 858 format_bytes(pbuf, sizeof(pbuf), ptoa(resvmem)); 859 printf("(%s reserved for PROM, ", pbuf); 860 format_bytes(pbuf, sizeof(pbuf), ptoa(physmem)); 861 printf("%s used by NetBSD)\n", pbuf); 862 if (unusedmem) { 863 format_bytes(pbuf, sizeof(pbuf), ptoa(unusedmem)); 864 printf("WARNING: unused memory = %s\n", pbuf); 865 } 866 if (unknownmem) { 867 format_bytes(pbuf, sizeof(pbuf), ptoa(unknownmem)); 868 printf("WARNING: %s of memory with unknown purpose\n", pbuf); 869 } 870 871 /* 872 * Allocate virtual address space for file I/O buffers. 873 * Note they are different than the array of headers, 'buf', 874 * and usually occupy more virtual memory than physical. 875 */ 876 size = MAXBSIZE * nbuf; 877 if (uvm_map(kernel_map, (vaddr_t *) &buffers, round_page(size), 878 NULL, UVM_UNKNOWN_OFFSET, 0, 879 UVM_MAPFLAG(UVM_PROT_NONE, UVM_PROT_NONE, UVM_INH_NONE, 880 UVM_ADV_NORMAL, 0)) != 0) 881 panic("startup: cannot allocate VM for buffers"); 882 base = bufpages / nbuf; 883 residual = bufpages % nbuf; 884 for (i = 0; i < nbuf; i++) { 885 vsize_t curbufsize; 886 vaddr_t curbuf; 887 struct vm_page *pg; 888 889 /* 890 * Each buffer has MAXBSIZE bytes of VM space allocated. Of 891 * that MAXBSIZE space, we allocate and map (base+1) pages 892 * for the first "residual" buffers, and then we allocate 893 * "base" pages for the rest. 894 */ 895 curbuf = (vaddr_t) buffers + (i * MAXBSIZE); 896 curbufsize = NBPG * ((i < residual) ? (base+1) : base); 897 898 while (curbufsize) { 899 pg = uvm_pagealloc(NULL, 0, NULL, 0); 900 if (pg == NULL) 901 panic("cpu_startup: not enough memory for " 902 "buffer cache"); 903 pmap_kenter_pa(curbuf, VM_PAGE_TO_PHYS(pg), 904 VM_PROT_READ|VM_PROT_WRITE); 905 curbuf += PAGE_SIZE; 906 curbufsize -= PAGE_SIZE; 907 } 908 } 909 /* 910 * Allocate a submap for exec arguments. This map effectively 911 * limits the number of processes exec'ing at any time. 912 */ 913 exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 914 16 * NCARGS, VM_MAP_PAGEABLE, FALSE, NULL); 915 916 /* 917 * Allocate a submap for physio 918 */ 919 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 920 VM_PHYS_SIZE, 0, FALSE, NULL); 921 922 /* 923 * No need to allocate an mbuf cluster submap. Mbuf clusters 924 * are allocated via the pool allocator, and we use K0SEG to 925 * map those pages. 926 */ 927 928 #if defined(DEBUG) 929 pmapdebug = opmapdebug; 930 #endif 931 format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 932 printf("avail memory = %s\n", pbuf); 933 #if 0 934 { 935 extern u_long pmap_pages_stolen; 936 937 format_bytes(pbuf, sizeof(pbuf), pmap_pages_stolen * PAGE_SIZE); 938 printf("stolen memory for VM structures = %s\n", pbuf); 939 } 940 #endif 941 format_bytes(pbuf, sizeof(pbuf), bufpages * NBPG); 942 printf("using %ld buffers containing %s of memory\n", (long)nbuf, pbuf); 943 944 /* 945 * Set up buffers, so they can be used to read disk labels. 946 */ 947 bufinit(); 948 949 /* 950 * Set up the HWPCB so that it's safe to configure secondary 951 * CPUs. 952 */ 953 hwrpb_primary_init(); 954 } 955 956 /* 957 * Retrieve the platform name from the DSR. 958 */ 959 const char * 960 alpha_dsr_sysname() 961 { 962 struct dsrdb *dsr; 963 const char *sysname; 964 965 /* 966 * DSR does not exist on early HWRPB versions. 967 */ 968 if (hwrpb->rpb_version < HWRPB_DSRDB_MINVERS) 969 return (NULL); 970 971 dsr = (struct dsrdb *)(((caddr_t)hwrpb) + hwrpb->rpb_dsrdb_off); 972 sysname = (const char *)((caddr_t)dsr + (dsr->dsr_sysname_off + 973 sizeof(u_int64_t))); 974 return (sysname); 975 } 976 977 /* 978 * Lookup the system specified system variation in the provided table, 979 * returning the model string on match. 980 */ 981 const char * 982 alpha_variation_name(variation, avtp) 983 u_int64_t variation; 984 const struct alpha_variation_table *avtp; 985 { 986 int i; 987 988 for (i = 0; avtp[i].avt_model != NULL; i++) 989 if (avtp[i].avt_variation == variation) 990 return (avtp[i].avt_model); 991 return (NULL); 992 } 993 994 /* 995 * Generate a default platform name based for unknown system variations. 996 */ 997 const char * 998 alpha_unknown_sysname() 999 { 1000 static char s[128]; /* safe size */ 1001 1002 sprintf(s, "%s family, unknown model variation 0x%lx", 1003 platform.family, hwrpb->rpb_variation & SV_ST_MASK); 1004 return ((const char *)s); 1005 } 1006 1007 void 1008 identifycpu() 1009 { 1010 char *s; 1011 int i; 1012 1013 /* 1014 * print out CPU identification information. 1015 */ 1016 printf("%s", cpu_model); 1017 for(s = cpu_model; *s; ++s) 1018 if(strncasecmp(s, "MHz", 3) == 0) 1019 goto skipMHz; 1020 printf(", %ldMHz", hwrpb->rpb_cc_freq / 1000000); 1021 skipMHz: 1022 printf(", s/n "); 1023 for (i = 0; i < 10; i++) 1024 printf("%c", hwrpb->rpb_ssn[i]); 1025 printf("\n"); 1026 printf("%ld byte page size, %d processor%s.\n", 1027 hwrpb->rpb_page_size, ncpus, ncpus == 1 ? "" : "s"); 1028 #if 0 1029 /* this isn't defined for any systems that we run on? */ 1030 printf("serial number 0x%lx 0x%lx\n", 1031 ((long *)hwrpb->rpb_ssn)[0], ((long *)hwrpb->rpb_ssn)[1]); 1032 1033 /* and these aren't particularly useful! */ 1034 printf("variation: 0x%lx, revision 0x%lx\n", 1035 hwrpb->rpb_variation, *(long *)hwrpb->rpb_revision); 1036 #endif 1037 } 1038 1039 int waittime = -1; 1040 struct pcb dumppcb; 1041 1042 void 1043 cpu_reboot(howto, bootstr) 1044 int howto; 1045 char *bootstr; 1046 { 1047 #if defined(MULTIPROCESSOR) 1048 u_long cpu_id = cpu_number(); 1049 u_long wait_mask = (1UL << cpu_id) | 1050 (1UL << hwrpb->rpb_primary_cpu_id); 1051 int i; 1052 #endif 1053 1054 /* If "always halt" was specified as a boot flag, obey. */ 1055 if ((boothowto & RB_HALT) != 0) 1056 howto |= RB_HALT; 1057 1058 boothowto = howto; 1059 1060 /* If system is cold, just halt. */ 1061 if (cold) { 1062 boothowto |= RB_HALT; 1063 goto haltsys; 1064 } 1065 1066 if ((boothowto & RB_NOSYNC) == 0 && waittime < 0) { 1067 waittime = 0; 1068 vfs_shutdown(); 1069 /* 1070 * If we've been adjusting the clock, the todr 1071 * will be out of synch; adjust it now. 1072 */ 1073 resettodr(); 1074 } 1075 1076 /* Disable interrupts. */ 1077 splhigh(); 1078 1079 #if defined(MULTIPROCESSOR) 1080 /* 1081 * Halt all other CPUs. If we're not the primary, the 1082 * primary will spin, waiting for us to halt. 1083 */ 1084 alpha_broadcast_ipi(ALPHA_IPI_HALT); 1085 1086 for (i = 0; i < 10000; i++) { 1087 alpha_mb(); 1088 if (cpus_running == wait_mask) 1089 break; 1090 delay(1000); 1091 } 1092 alpha_mb(); 1093 if (cpus_running != wait_mask) 1094 printf("WARNING: Unable to halt secondary CPUs (0x%lx)\n", 1095 cpus_running); 1096 #endif /* MULTIPROCESSOR */ 1097 1098 /* If rebooting and a dump is requested do it. */ 1099 #if 0 1100 if ((boothowto & (RB_DUMP | RB_HALT)) == RB_DUMP) 1101 #else 1102 if (boothowto & RB_DUMP) 1103 #endif 1104 dumpsys(); 1105 1106 haltsys: 1107 1108 /* run any shutdown hooks */ 1109 doshutdownhooks(); 1110 1111 #ifdef BOOTKEY 1112 printf("hit any key to %s...\n", howto & RB_HALT ? "halt" : "reboot"); 1113 cnpollc(1); /* for proper keyboard command handling */ 1114 cngetc(); 1115 cnpollc(0); 1116 printf("\n"); 1117 #endif 1118 1119 /* Finally, powerdown/halt/reboot the system. */ 1120 if ((boothowto & RB_POWERDOWN) == RB_POWERDOWN && 1121 platform.powerdown != NULL) { 1122 (*platform.powerdown)(); 1123 printf("WARNING: powerdown failed!\n"); 1124 } 1125 printf("%s\n\n", (boothowto & RB_HALT) ? "halted." : "rebooting..."); 1126 #if defined(MULTIPROCESSOR) 1127 if (cpu_id != hwrpb->rpb_primary_cpu_id) 1128 cpu_halt(); 1129 else 1130 #endif 1131 prom_halt(boothowto & RB_HALT); 1132 /*NOTREACHED*/ 1133 } 1134 1135 /* 1136 * These variables are needed by /sbin/savecore 1137 */ 1138 u_long dumpmag = 0x8fca0101; /* magic number */ 1139 int dumpsize = 0; /* pages */ 1140 long dumplo = 0; /* blocks */ 1141 1142 /* 1143 * cpu_dumpsize: calculate size of machine-dependent kernel core dump headers. 1144 */ 1145 int 1146 cpu_dumpsize() 1147 { 1148 int size; 1149 1150 size = ALIGN(sizeof(kcore_seg_t)) + ALIGN(sizeof(cpu_kcore_hdr_t)) + 1151 ALIGN(mem_cluster_cnt * sizeof(phys_ram_seg_t)); 1152 if (roundup(size, dbtob(1)) != dbtob(1)) 1153 return -1; 1154 1155 return (1); 1156 } 1157 1158 /* 1159 * cpu_dump_mempagecnt: calculate size of RAM (in pages) to be dumped. 1160 */ 1161 u_long 1162 cpu_dump_mempagecnt() 1163 { 1164 u_long i, n; 1165 1166 n = 0; 1167 for (i = 0; i < mem_cluster_cnt; i++) 1168 n += atop(mem_clusters[i].size); 1169 return (n); 1170 } 1171 1172 /* 1173 * cpu_dump: dump machine-dependent kernel core dump headers. 1174 */ 1175 int 1176 cpu_dump() 1177 { 1178 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1179 char buf[dbtob(1)]; 1180 kcore_seg_t *segp; 1181 cpu_kcore_hdr_t *cpuhdrp; 1182 phys_ram_seg_t *memsegp; 1183 int i; 1184 1185 dump = bdevsw[major(dumpdev)].d_dump; 1186 1187 bzero(buf, sizeof buf); 1188 segp = (kcore_seg_t *)buf; 1189 cpuhdrp = (cpu_kcore_hdr_t *)&buf[ALIGN(sizeof(*segp))]; 1190 memsegp = (phys_ram_seg_t *)&buf[ ALIGN(sizeof(*segp)) + 1191 ALIGN(sizeof(*cpuhdrp))]; 1192 1193 /* 1194 * Generate a segment header. 1195 */ 1196 CORE_SETMAGIC(*segp, KCORE_MAGIC, MID_MACHINE, CORE_CPU); 1197 segp->c_size = dbtob(1) - ALIGN(sizeof(*segp)); 1198 1199 /* 1200 * Add the machine-dependent header info. 1201 */ 1202 cpuhdrp->lev1map_pa = ALPHA_K0SEG_TO_PHYS((vaddr_t)kernel_lev1map); 1203 cpuhdrp->page_size = PAGE_SIZE; 1204 cpuhdrp->nmemsegs = mem_cluster_cnt; 1205 1206 /* 1207 * Fill in the memory segment descriptors. 1208 */ 1209 for (i = 0; i < mem_cluster_cnt; i++) { 1210 memsegp[i].start = mem_clusters[i].start; 1211 memsegp[i].size = mem_clusters[i].size & ~PAGE_MASK; 1212 } 1213 1214 return (dump(dumpdev, dumplo, (caddr_t)buf, dbtob(1))); 1215 } 1216 1217 /* 1218 * This is called by main to set dumplo and dumpsize. 1219 * Dumps always skip the first NBPG of disk space 1220 * in case there might be a disk label stored there. 1221 * If there is extra space, put dump at the end to 1222 * reduce the chance that swapping trashes it. 1223 */ 1224 void 1225 cpu_dumpconf() 1226 { 1227 int nblks, dumpblks; /* size of dump area */ 1228 int maj; 1229 1230 if (dumpdev == NODEV) 1231 goto bad; 1232 maj = major(dumpdev); 1233 if (maj < 0 || maj >= nblkdev) 1234 panic("dumpconf: bad dumpdev=0x%x", dumpdev); 1235 if (bdevsw[maj].d_psize == NULL) 1236 goto bad; 1237 nblks = (*bdevsw[maj].d_psize)(dumpdev); 1238 if (nblks <= ctod(1)) 1239 goto bad; 1240 1241 dumpblks = cpu_dumpsize(); 1242 if (dumpblks < 0) 1243 goto bad; 1244 dumpblks += ctod(cpu_dump_mempagecnt()); 1245 1246 /* If dump won't fit (incl. room for possible label), punt. */ 1247 if (dumpblks > (nblks - ctod(1))) 1248 goto bad; 1249 1250 /* Put dump at end of partition */ 1251 dumplo = nblks - dumpblks; 1252 1253 /* dumpsize is in page units, and doesn't include headers. */ 1254 dumpsize = cpu_dump_mempagecnt(); 1255 return; 1256 1257 bad: 1258 dumpsize = 0; 1259 return; 1260 } 1261 1262 /* 1263 * Dump the kernel's image to the swap partition. 1264 */ 1265 #define BYTES_PER_DUMP NBPG 1266 1267 void 1268 dumpsys() 1269 { 1270 u_long totalbytesleft, bytes, i, n, memcl; 1271 u_long maddr; 1272 int psize; 1273 daddr_t blkno; 1274 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1275 int error; 1276 1277 /* Save registers. */ 1278 savectx(&dumppcb); 1279 1280 if (dumpdev == NODEV) 1281 return; 1282 1283 /* 1284 * For dumps during autoconfiguration, 1285 * if dump device has already configured... 1286 */ 1287 if (dumpsize == 0) 1288 cpu_dumpconf(); 1289 if (dumplo <= 0) { 1290 printf("\ndump to dev %u,%u not possible\n", major(dumpdev), 1291 minor(dumpdev)); 1292 return; 1293 } 1294 printf("\ndumping to dev %u,%u offset %ld\n", major(dumpdev), 1295 minor(dumpdev), dumplo); 1296 1297 psize = (*bdevsw[major(dumpdev)].d_psize)(dumpdev); 1298 printf("dump "); 1299 if (psize == -1) { 1300 printf("area unavailable\n"); 1301 return; 1302 } 1303 1304 /* XXX should purge all outstanding keystrokes. */ 1305 1306 if ((error = cpu_dump()) != 0) 1307 goto err; 1308 1309 totalbytesleft = ptoa(cpu_dump_mempagecnt()); 1310 blkno = dumplo + cpu_dumpsize(); 1311 dump = bdevsw[major(dumpdev)].d_dump; 1312 error = 0; 1313 1314 for (memcl = 0; memcl < mem_cluster_cnt; memcl++) { 1315 maddr = mem_clusters[memcl].start; 1316 bytes = mem_clusters[memcl].size & ~PAGE_MASK; 1317 1318 for (i = 0; i < bytes; i += n, totalbytesleft -= n) { 1319 1320 /* Print out how many MBs we to go. */ 1321 if ((totalbytesleft % (1024*1024)) == 0) 1322 printf("%ld ", totalbytesleft / (1024 * 1024)); 1323 1324 /* Limit size for next transfer. */ 1325 n = bytes - i; 1326 if (n > BYTES_PER_DUMP) 1327 n = BYTES_PER_DUMP; 1328 1329 error = (*dump)(dumpdev, blkno, 1330 (caddr_t)ALPHA_PHYS_TO_K0SEG(maddr), n); 1331 if (error) 1332 goto err; 1333 maddr += n; 1334 blkno += btodb(n); /* XXX? */ 1335 1336 /* XXX should look for keystrokes, to cancel. */ 1337 } 1338 } 1339 1340 err: 1341 switch (error) { 1342 1343 case ENXIO: 1344 printf("device bad\n"); 1345 break; 1346 1347 case EFAULT: 1348 printf("device not ready\n"); 1349 break; 1350 1351 case EINVAL: 1352 printf("area improper\n"); 1353 break; 1354 1355 case EIO: 1356 printf("i/o error\n"); 1357 break; 1358 1359 case EINTR: 1360 printf("aborted from console\n"); 1361 break; 1362 1363 case 0: 1364 printf("succeeded\n"); 1365 break; 1366 1367 default: 1368 printf("error %d\n", error); 1369 break; 1370 } 1371 printf("\n\n"); 1372 delay(1000); 1373 } 1374 1375 void 1376 frametoreg(framep, regp) 1377 struct trapframe *framep; 1378 struct reg *regp; 1379 { 1380 1381 regp->r_regs[R_V0] = framep->tf_regs[FRAME_V0]; 1382 regp->r_regs[R_T0] = framep->tf_regs[FRAME_T0]; 1383 regp->r_regs[R_T1] = framep->tf_regs[FRAME_T1]; 1384 regp->r_regs[R_T2] = framep->tf_regs[FRAME_T2]; 1385 regp->r_regs[R_T3] = framep->tf_regs[FRAME_T3]; 1386 regp->r_regs[R_T4] = framep->tf_regs[FRAME_T4]; 1387 regp->r_regs[R_T5] = framep->tf_regs[FRAME_T5]; 1388 regp->r_regs[R_T6] = framep->tf_regs[FRAME_T6]; 1389 regp->r_regs[R_T7] = framep->tf_regs[FRAME_T7]; 1390 regp->r_regs[R_S0] = framep->tf_regs[FRAME_S0]; 1391 regp->r_regs[R_S1] = framep->tf_regs[FRAME_S1]; 1392 regp->r_regs[R_S2] = framep->tf_regs[FRAME_S2]; 1393 regp->r_regs[R_S3] = framep->tf_regs[FRAME_S3]; 1394 regp->r_regs[R_S4] = framep->tf_regs[FRAME_S4]; 1395 regp->r_regs[R_S5] = framep->tf_regs[FRAME_S5]; 1396 regp->r_regs[R_S6] = framep->tf_regs[FRAME_S6]; 1397 regp->r_regs[R_A0] = framep->tf_regs[FRAME_A0]; 1398 regp->r_regs[R_A1] = framep->tf_regs[FRAME_A1]; 1399 regp->r_regs[R_A2] = framep->tf_regs[FRAME_A2]; 1400 regp->r_regs[R_A3] = framep->tf_regs[FRAME_A3]; 1401 regp->r_regs[R_A4] = framep->tf_regs[FRAME_A4]; 1402 regp->r_regs[R_A5] = framep->tf_regs[FRAME_A5]; 1403 regp->r_regs[R_T8] = framep->tf_regs[FRAME_T8]; 1404 regp->r_regs[R_T9] = framep->tf_regs[FRAME_T9]; 1405 regp->r_regs[R_T10] = framep->tf_regs[FRAME_T10]; 1406 regp->r_regs[R_T11] = framep->tf_regs[FRAME_T11]; 1407 regp->r_regs[R_RA] = framep->tf_regs[FRAME_RA]; 1408 regp->r_regs[R_T12] = framep->tf_regs[FRAME_T12]; 1409 regp->r_regs[R_AT] = framep->tf_regs[FRAME_AT]; 1410 regp->r_regs[R_GP] = framep->tf_regs[FRAME_GP]; 1411 /* regp->r_regs[R_SP] = framep->tf_regs[FRAME_SP]; XXX */ 1412 regp->r_regs[R_ZERO] = 0; 1413 } 1414 1415 void 1416 regtoframe(regp, framep) 1417 struct reg *regp; 1418 struct trapframe *framep; 1419 { 1420 1421 framep->tf_regs[FRAME_V0] = regp->r_regs[R_V0]; 1422 framep->tf_regs[FRAME_T0] = regp->r_regs[R_T0]; 1423 framep->tf_regs[FRAME_T1] = regp->r_regs[R_T1]; 1424 framep->tf_regs[FRAME_T2] = regp->r_regs[R_T2]; 1425 framep->tf_regs[FRAME_T3] = regp->r_regs[R_T3]; 1426 framep->tf_regs[FRAME_T4] = regp->r_regs[R_T4]; 1427 framep->tf_regs[FRAME_T5] = regp->r_regs[R_T5]; 1428 framep->tf_regs[FRAME_T6] = regp->r_regs[R_T6]; 1429 framep->tf_regs[FRAME_T7] = regp->r_regs[R_T7]; 1430 framep->tf_regs[FRAME_S0] = regp->r_regs[R_S0]; 1431 framep->tf_regs[FRAME_S1] = regp->r_regs[R_S1]; 1432 framep->tf_regs[FRAME_S2] = regp->r_regs[R_S2]; 1433 framep->tf_regs[FRAME_S3] = regp->r_regs[R_S3]; 1434 framep->tf_regs[FRAME_S4] = regp->r_regs[R_S4]; 1435 framep->tf_regs[FRAME_S5] = regp->r_regs[R_S5]; 1436 framep->tf_regs[FRAME_S6] = regp->r_regs[R_S6]; 1437 framep->tf_regs[FRAME_A0] = regp->r_regs[R_A0]; 1438 framep->tf_regs[FRAME_A1] = regp->r_regs[R_A1]; 1439 framep->tf_regs[FRAME_A2] = regp->r_regs[R_A2]; 1440 framep->tf_regs[FRAME_A3] = regp->r_regs[R_A3]; 1441 framep->tf_regs[FRAME_A4] = regp->r_regs[R_A4]; 1442 framep->tf_regs[FRAME_A5] = regp->r_regs[R_A5]; 1443 framep->tf_regs[FRAME_T8] = regp->r_regs[R_T8]; 1444 framep->tf_regs[FRAME_T9] = regp->r_regs[R_T9]; 1445 framep->tf_regs[FRAME_T10] = regp->r_regs[R_T10]; 1446 framep->tf_regs[FRAME_T11] = regp->r_regs[R_T11]; 1447 framep->tf_regs[FRAME_RA] = regp->r_regs[R_RA]; 1448 framep->tf_regs[FRAME_T12] = regp->r_regs[R_T12]; 1449 framep->tf_regs[FRAME_AT] = regp->r_regs[R_AT]; 1450 framep->tf_regs[FRAME_GP] = regp->r_regs[R_GP]; 1451 /* framep->tf_regs[FRAME_SP] = regp->r_regs[R_SP]; XXX */ 1452 /* ??? = regp->r_regs[R_ZERO]; */ 1453 } 1454 1455 void 1456 printregs(regp) 1457 struct reg *regp; 1458 { 1459 int i; 1460 1461 for (i = 0; i < 32; i++) 1462 printf("R%d:\t0x%016lx%s", i, regp->r_regs[i], 1463 i & 1 ? "\n" : "\t"); 1464 } 1465 1466 void 1467 regdump(framep) 1468 struct trapframe *framep; 1469 { 1470 struct reg reg; 1471 1472 frametoreg(framep, ®); 1473 reg.r_regs[R_SP] = alpha_pal_rdusp(); 1474 1475 printf("REGISTERS:\n"); 1476 printregs(®); 1477 } 1478 1479 1480 /* 1481 * Send an interrupt to process. 1482 */ 1483 void 1484 sendsig(catcher, sig, mask, code) 1485 sig_t catcher; 1486 int sig; 1487 sigset_t *mask; 1488 u_long code; 1489 { 1490 struct proc *p = curproc; 1491 struct sigcontext *scp, ksc; 1492 struct trapframe *frame; 1493 int onstack, fsize, rndfsize; 1494 1495 frame = p->p_md.md_tf; 1496 1497 /* Do we need to jump onto the signal stack? */ 1498 onstack = 1499 (p->p_sigctx.ps_sigstk.ss_flags & (SS_DISABLE | SS_ONSTACK)) == 0 && 1500 (SIGACTION(p, sig).sa_flags & SA_ONSTACK) != 0; 1501 1502 /* Allocate space for the signal handler context. */ 1503 fsize = sizeof(ksc); 1504 rndfsize = ((fsize + 15) / 16) * 16; 1505 1506 if (onstack) 1507 scp = (struct sigcontext *)((caddr_t)p->p_sigctx.ps_sigstk.ss_sp + 1508 p->p_sigctx.ps_sigstk.ss_size); 1509 else 1510 scp = (struct sigcontext *)(alpha_pal_rdusp()); 1511 scp = (struct sigcontext *)((caddr_t)scp - rndfsize); 1512 1513 #ifdef DEBUG 1514 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1515 printf("sendsig(%d): sig %d ssp %p usp %p\n", p->p_pid, 1516 sig, &onstack, scp); 1517 #endif 1518 1519 /* Build stack frame for signal trampoline. */ 1520 ksc.sc_pc = frame->tf_regs[FRAME_PC]; 1521 ksc.sc_ps = frame->tf_regs[FRAME_PS]; 1522 1523 /* Save register context. */ 1524 frametoreg(frame, (struct reg *)ksc.sc_regs); 1525 ksc.sc_regs[R_ZERO] = 0xACEDBADE; /* magic number */ 1526 ksc.sc_regs[R_SP] = alpha_pal_rdusp(); 1527 1528 /* save the floating-point state, if necessary, then copy it. */ 1529 if (p->p_addr->u_pcb.pcb_fpcpu != NULL) 1530 fpusave_proc(p, 1); 1531 ksc.sc_ownedfp = p->p_md.md_flags & MDP_FPUSED; 1532 bcopy(&p->p_addr->u_pcb.pcb_fp, (struct fpreg *)ksc.sc_fpregs, 1533 sizeof(struct fpreg)); 1534 ksc.sc_fp_control = 0; /* XXX ? */ 1535 bzero(ksc.sc_reserved, sizeof ksc.sc_reserved); /* XXX */ 1536 bzero(ksc.sc_xxx, sizeof ksc.sc_xxx); /* XXX */ 1537 1538 /* Save signal stack. */ 1539 ksc.sc_onstack = p->p_sigctx.ps_sigstk.ss_flags & SS_ONSTACK; 1540 1541 /* Save signal mask. */ 1542 ksc.sc_mask = *mask; 1543 1544 #ifdef COMPAT_13 1545 /* 1546 * XXX We always have to save an old style signal mask because 1547 * XXX we might be delivering a signal to a process which will 1548 * XXX escape from the signal in a non-standard way and invoke 1549 * XXX sigreturn() directly. 1550 */ 1551 { 1552 /* Note: it's a long in the stack frame. */ 1553 sigset13_t mask13; 1554 1555 native_sigset_to_sigset13(mask, &mask13); 1556 ksc.__sc_mask13 = mask13; 1557 } 1558 #endif 1559 1560 #ifdef COMPAT_OSF1 1561 /* 1562 * XXX Create an OSF/1-style sigcontext and associated goo. 1563 */ 1564 #endif 1565 1566 if (copyout(&ksc, (caddr_t)scp, fsize) != 0) { 1567 /* 1568 * Process has trashed its stack; give it an illegal 1569 * instruction to halt it in its tracks. 1570 */ 1571 #ifdef DEBUG 1572 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1573 printf("sendsig(%d): copyout failed on sig %d\n", 1574 p->p_pid, sig); 1575 #endif 1576 sigexit(p, SIGILL); 1577 /* NOTREACHED */ 1578 } 1579 #ifdef DEBUG 1580 if (sigdebug & SDB_FOLLOW) 1581 printf("sendsig(%d): sig %d scp %p code %lx\n", p->p_pid, sig, 1582 scp, code); 1583 #endif 1584 1585 /* Set up the registers to return to sigcode. */ 1586 frame->tf_regs[FRAME_PC] = (u_int64_t)p->p_sigctx.ps_sigcode; 1587 frame->tf_regs[FRAME_A0] = sig; 1588 frame->tf_regs[FRAME_A1] = code; 1589 frame->tf_regs[FRAME_A2] = (u_int64_t)scp; 1590 frame->tf_regs[FRAME_T12] = (u_int64_t)catcher; /* t12 is pv */ 1591 alpha_pal_wrusp((unsigned long)scp); 1592 1593 /* Remember that we're now on the signal stack. */ 1594 if (onstack) 1595 p->p_sigctx.ps_sigstk.ss_flags |= SS_ONSTACK; 1596 1597 #ifdef DEBUG 1598 if (sigdebug & SDB_FOLLOW) 1599 printf("sendsig(%d): pc %lx, catcher %lx\n", p->p_pid, 1600 frame->tf_regs[FRAME_PC], frame->tf_regs[FRAME_A3]); 1601 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1602 printf("sendsig(%d): sig %d returns\n", 1603 p->p_pid, sig); 1604 #endif 1605 } 1606 1607 /* 1608 * System call to cleanup state after a signal 1609 * has been taken. Reset signal mask and 1610 * stack state from context left by sendsig (above). 1611 * Return to previous pc and psl as specified by 1612 * context left by sendsig. Check carefully to 1613 * make sure that the user has not modified the 1614 * psl to gain improper privileges or to cause 1615 * a machine fault. 1616 */ 1617 /* ARGSUSED */ 1618 int 1619 sys___sigreturn14(p, v, retval) 1620 struct proc *p; 1621 void *v; 1622 register_t *retval; 1623 { 1624 struct sys___sigreturn14_args /* { 1625 syscallarg(struct sigcontext *) sigcntxp; 1626 } */ *uap = v; 1627 struct sigcontext *scp, ksc; 1628 1629 /* 1630 * The trampoline code hands us the context. 1631 * It is unsafe to keep track of it ourselves, in the event that a 1632 * program jumps out of a signal handler. 1633 */ 1634 scp = SCARG(uap, sigcntxp); 1635 #ifdef DEBUG 1636 if (sigdebug & SDB_FOLLOW) 1637 printf("sigreturn: pid %d, scp %p\n", p->p_pid, scp); 1638 #endif 1639 if (ALIGN(scp) != (u_int64_t)scp) 1640 return (EINVAL); 1641 1642 if (copyin((caddr_t)scp, &ksc, sizeof(ksc)) != 0) 1643 return (EFAULT); 1644 1645 if (ksc.sc_regs[R_ZERO] != 0xACEDBADE) /* magic number */ 1646 return (EINVAL); 1647 1648 /* Restore register context. */ 1649 p->p_md.md_tf->tf_regs[FRAME_PC] = ksc.sc_pc; 1650 p->p_md.md_tf->tf_regs[FRAME_PS] = 1651 (ksc.sc_ps | ALPHA_PSL_USERSET) & ~ALPHA_PSL_USERCLR; 1652 1653 regtoframe((struct reg *)ksc.sc_regs, p->p_md.md_tf); 1654 alpha_pal_wrusp(ksc.sc_regs[R_SP]); 1655 1656 /* XXX ksc.sc_ownedfp ? */ 1657 if (p->p_addr->u_pcb.pcb_fpcpu != NULL) 1658 fpusave_proc(p, 0); 1659 bcopy((struct fpreg *)ksc.sc_fpregs, &p->p_addr->u_pcb.pcb_fp, 1660 sizeof(struct fpreg)); 1661 /* XXX ksc.sc_fp_control ? */ 1662 1663 /* Restore signal stack. */ 1664 if (ksc.sc_onstack & SS_ONSTACK) 1665 p->p_sigctx.ps_sigstk.ss_flags |= SS_ONSTACK; 1666 else 1667 p->p_sigctx.ps_sigstk.ss_flags &= ~SS_ONSTACK; 1668 1669 /* Restore signal mask. */ 1670 (void) sigprocmask1(p, SIG_SETMASK, &ksc.sc_mask, 0); 1671 1672 #ifdef DEBUG 1673 if (sigdebug & SDB_FOLLOW) 1674 printf("sigreturn(%d): returns\n", p->p_pid); 1675 #endif 1676 return (EJUSTRETURN); 1677 } 1678 1679 /* 1680 * machine dependent system variables. 1681 */ 1682 int 1683 cpu_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 1684 int *name; 1685 u_int namelen; 1686 void *oldp; 1687 size_t *oldlenp; 1688 void *newp; 1689 size_t newlen; 1690 struct proc *p; 1691 { 1692 dev_t consdev; 1693 1694 /* all sysctl names at this level are terminal */ 1695 if (namelen != 1) 1696 return (ENOTDIR); /* overloaded */ 1697 1698 switch (name[0]) { 1699 case CPU_CONSDEV: 1700 if (cn_tab != NULL) 1701 consdev = cn_tab->cn_dev; 1702 else 1703 consdev = NODEV; 1704 return (sysctl_rdstruct(oldp, oldlenp, newp, &consdev, 1705 sizeof consdev)); 1706 1707 case CPU_ROOT_DEVICE: 1708 return (sysctl_rdstring(oldp, oldlenp, newp, 1709 root_device->dv_xname)); 1710 1711 case CPU_UNALIGNED_PRINT: 1712 return (sysctl_int(oldp, oldlenp, newp, newlen, 1713 &alpha_unaligned_print)); 1714 1715 case CPU_UNALIGNED_FIX: 1716 return (sysctl_int(oldp, oldlenp, newp, newlen, 1717 &alpha_unaligned_fix)); 1718 1719 case CPU_UNALIGNED_SIGBUS: 1720 return (sysctl_int(oldp, oldlenp, newp, newlen, 1721 &alpha_unaligned_sigbus)); 1722 1723 case CPU_BOOTED_KERNEL: 1724 return (sysctl_rdstring(oldp, oldlenp, newp, 1725 bootinfo.booted_kernel)); 1726 1727 default: 1728 return (EOPNOTSUPP); 1729 } 1730 /* NOTREACHED */ 1731 } 1732 1733 /* 1734 * Set registers on exec. 1735 */ 1736 void 1737 setregs(p, pack, stack) 1738 register struct proc *p; 1739 struct exec_package *pack; 1740 u_long stack; 1741 { 1742 struct trapframe *tfp = p->p_md.md_tf; 1743 #ifdef DEBUG 1744 int i; 1745 #endif 1746 1747 #ifdef DEBUG 1748 /* 1749 * Crash and dump, if the user requested it. 1750 */ 1751 if (boothowto & RB_DUMP) 1752 panic("crash requested by boot flags"); 1753 #endif 1754 1755 #ifdef DEBUG 1756 for (i = 0; i < FRAME_SIZE; i++) 1757 tfp->tf_regs[i] = 0xbabefacedeadbeef; 1758 #else 1759 bzero(tfp->tf_regs, FRAME_SIZE * sizeof tfp->tf_regs[0]); 1760 #endif 1761 bzero(&p->p_addr->u_pcb.pcb_fp, sizeof p->p_addr->u_pcb.pcb_fp); 1762 p->p_addr->u_pcb.pcb_fp.fpr_cr = FPCR_INED 1763 | FPCR_UNFD 1764 | FPCR_UNDZ 1765 | FPCR_DYN(FP_RN) 1766 | FPCR_OVFD 1767 | FPCR_DZED 1768 | FPCR_INVD 1769 | FPCR_DNZ; 1770 alpha_pal_wrusp(stack); 1771 tfp->tf_regs[FRAME_PS] = ALPHA_PSL_USERSET; 1772 tfp->tf_regs[FRAME_PC] = pack->ep_entry & ~3; 1773 1774 tfp->tf_regs[FRAME_A0] = stack; /* a0 = sp */ 1775 tfp->tf_regs[FRAME_A1] = 0; /* a1 = rtld cleanup */ 1776 tfp->tf_regs[FRAME_A2] = 0; /* a2 = rtld object */ 1777 tfp->tf_regs[FRAME_A3] = (u_int64_t)PS_STRINGS; /* a3 = ps_strings */ 1778 tfp->tf_regs[FRAME_T12] = tfp->tf_regs[FRAME_PC]; /* a.k.a. PV */ 1779 1780 p->p_md.md_flags &= ~MDP_FPUSED; 1781 if (p->p_addr->u_pcb.pcb_fpcpu != NULL) 1782 fpusave_proc(p, 0); 1783 } 1784 1785 /* 1786 * Release the FPU. 1787 */ 1788 void 1789 fpusave_cpu(struct cpu_info *ci, int save) 1790 { 1791 struct proc *p; 1792 #if defined(MULTIPROCESSOR) 1793 int s; 1794 #endif 1795 1796 KDASSERT(ci == curcpu()); 1797 1798 #if defined(MULTIPROCESSOR) 1799 atomic_setbits_ulong(&ci->ci_flags, CPUF_FPUSAVE); 1800 #endif 1801 1802 p = ci->ci_fpcurproc; 1803 if (p == NULL) 1804 goto out; 1805 1806 if (save) { 1807 alpha_pal_wrfen(1); 1808 savefpstate(&p->p_addr->u_pcb.pcb_fp); 1809 } 1810 1811 alpha_pal_wrfen(0); 1812 1813 FPCPU_LOCK(&p->p_addr->u_pcb, s); 1814 1815 p->p_addr->u_pcb.pcb_fpcpu = NULL; 1816 ci->ci_fpcurproc = NULL; 1817 1818 FPCPU_UNLOCK(&p->p_addr->u_pcb, s); 1819 1820 out: 1821 #if defined(MULTIPROCESSOR) 1822 atomic_clearbits_ulong(&ci->ci_flags, CPUF_FPUSAVE); 1823 #endif 1824 return; 1825 } 1826 1827 /* 1828 * Synchronize FP state for this process. 1829 */ 1830 void 1831 fpusave_proc(struct proc *p, int save) 1832 { 1833 struct cpu_info *ci = curcpu(); 1834 struct cpu_info *oci; 1835 #if defined(MULTIPROCESSOR) 1836 u_long ipi = save ? ALPHA_IPI_SYNCH_FPU : ALPHA_IPI_DISCARD_FPU; 1837 int s, spincount, hold_count; 1838 #endif 1839 1840 KDASSERT(p->p_addr != NULL); 1841 KDASSERT(p->p_flag & P_INMEM); 1842 1843 FPCPU_LOCK(&p->p_addr->u_pcb, s); 1844 1845 oci = p->p_addr->u_pcb.pcb_fpcpu; 1846 if (oci == NULL) { 1847 FPCPU_UNLOCK(&p->p_addr->u_pcb, s); 1848 return; 1849 } 1850 1851 #if defined(MULTIPROCESSOR) 1852 if (oci == ci) { 1853 KASSERT(ci->ci_fpcurproc == p); 1854 FPCPU_UNLOCK(&p->p_addr->u_pcb, s); 1855 fpusave_cpu(ci, save); 1856 return; 1857 } 1858 1859 KASSERT(oci->ci_fpcurproc == p); 1860 alpha_send_ipi(oci->ci_cpuid, ipi); 1861 FPCPU_UNLOCK(&p->p_addr->u_pcb, s); 1862 1863 /* 1864 * If we're holding the kernel lock, release it before 1865 * spinning. 1866 * 1867 * XXX Why do we have to do this?! We shouldn't need to! 1868 */ 1869 if (p->p_flag & P_BIGLOCK) 1870 hold_count = spinlock_release_all(&kernel_lock); 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 1880 /* 1881 * ...and reacquire it. 1882 */ 1883 if (p->p_flag & P_BIGLOCK) 1884 spinlock_acquire_count(&kernel_lock, hold_count); 1885 #else 1886 KASSERT(ci->ci_fpcurproc == p); 1887 FPCPU_UNLOCK(&p->p_addr->u_pcb, s); 1888 fpusave_cpu(ci, save); 1889 #endif /* MULTIPROCESSOR */ 1890 } 1891 1892 /* 1893 * The following primitives manipulate the run queues. _whichqs tells which 1894 * of the 32 queues _qs have processes in them. Setrunqueue puts processes 1895 * into queues, Remrunqueue removes them from queues. The running process is 1896 * on no queue, other processes are on a queue related to p->p_priority, 1897 * divided by 4 actually to shrink the 0-127 range of priorities into the 32 1898 * available queues. 1899 */ 1900 /* 1901 * setrunqueue(p) 1902 * proc *p; 1903 * 1904 * Call should be made at splclock(), and p->p_stat should be SRUN. 1905 */ 1906 1907 void 1908 setrunqueue(p) 1909 struct proc *p; 1910 { 1911 int bit; 1912 1913 /* firewall: p->p_back must be NULL */ 1914 if (p->p_back != NULL) 1915 panic("setrunqueue"); 1916 1917 bit = p->p_priority >> 2; 1918 sched_whichqs |= (1 << bit); 1919 p->p_forw = (struct proc *)&sched_qs[bit]; 1920 p->p_back = sched_qs[bit].ph_rlink; 1921 p->p_back->p_forw = p; 1922 sched_qs[bit].ph_rlink = p; 1923 } 1924 1925 /* 1926 * remrunqueue(p) 1927 * 1928 * Call should be made at splclock(). 1929 */ 1930 void 1931 remrunqueue(p) 1932 struct proc *p; 1933 { 1934 int bit; 1935 1936 bit = p->p_priority >> 2; 1937 if ((sched_whichqs & (1 << bit)) == 0) 1938 panic("remrunqueue"); 1939 1940 p->p_back->p_forw = p->p_forw; 1941 p->p_forw->p_back = p->p_back; 1942 p->p_back = NULL; /* for firewall checking. */ 1943 1944 if ((struct proc *)&sched_qs[bit] == sched_qs[bit].ph_link) 1945 sched_whichqs &= ~(1 << bit); 1946 } 1947 1948 /* 1949 * Return the best possible estimate of the time in the timeval 1950 * to which tvp points. Unfortunately, we can't read the hardware registers. 1951 * We guarantee that the time will be greater than the value obtained by a 1952 * previous call. 1953 * 1954 * XXX PLEASE REWRITE ME TO USE THE CYCLE COUNTER AND DEAL WITH 1955 * XXX MULTIPLE CPUs IN A SANE WAY! 1956 */ 1957 void 1958 microtime(tvp) 1959 register struct timeval *tvp; 1960 { 1961 static struct timeval lasttime; 1962 static struct simplelock microtime_slock = SIMPLELOCK_INITIALIZER; 1963 int s; 1964 1965 s = splclock(); 1966 simple_lock(µtime_slock); 1967 1968 *tvp = time; 1969 #ifdef notdef 1970 tvp->tv_usec += clkread(); 1971 while (tvp->tv_usec >= 1000000) { 1972 tvp->tv_sec++; 1973 tvp->tv_usec -= 1000000; 1974 } 1975 #endif 1976 if (tvp->tv_sec == lasttime.tv_sec && 1977 tvp->tv_usec <= lasttime.tv_usec && 1978 (tvp->tv_usec = lasttime.tv_usec + 1) >= 1000000) { 1979 tvp->tv_sec++; 1980 tvp->tv_usec -= 1000000; 1981 } 1982 lasttime = *tvp; 1983 1984 simple_unlock(µtime_slock); 1985 splx(s); 1986 } 1987 1988 /* 1989 * Wait "n" microseconds. 1990 */ 1991 void 1992 delay(n) 1993 unsigned long n; 1994 { 1995 unsigned long pcc0, pcc1, curcycle, cycles, usec; 1996 1997 if (n == 0) 1998 return; 1999 2000 pcc0 = alpha_rpcc() & 0xffffffffUL; 2001 cycles = 0; 2002 usec = 0; 2003 2004 while (usec <= n) { 2005 /* 2006 * Get the next CPU cycle count- assumes that we cannot 2007 * have had more than one 32 bit overflow. 2008 */ 2009 pcc1 = alpha_rpcc() & 0xffffffffUL; 2010 if (pcc1 < pcc0) 2011 curcycle = (pcc1 + 0x100000000UL) - pcc0; 2012 else 2013 curcycle = pcc1 - pcc0; 2014 2015 /* 2016 * We now have the number of processor cycles since we 2017 * last checked. Add the current cycle count to the 2018 * running total. If it's over cycles_per_usec, increment 2019 * the usec counter. 2020 */ 2021 cycles += curcycle; 2022 while (cycles > cycles_per_usec) { 2023 usec++; 2024 cycles -= cycles_per_usec; 2025 } 2026 pcc0 = pcc1; 2027 } 2028 } 2029 2030 #if defined(COMPAT_OSF1) || 1 /* XXX */ 2031 void cpu_exec_ecoff_setregs __P((struct proc *, struct exec_package *, 2032 u_long)); 2033 #endif 2034 2035 #if 1 /* XXX */ 2036 void 2037 cpu_exec_ecoff_setregs(p, epp, stack) 2038 struct proc *p; 2039 struct exec_package *epp; 2040 u_long stack; 2041 { 2042 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2043 2044 setregs(p, epp, stack); 2045 p->p_md.md_tf->tf_regs[FRAME_GP] = execp->a.gp_value; 2046 } 2047 2048 /* 2049 * cpu_exec_ecoff_hook(): 2050 * cpu-dependent ECOFF format hook for execve(). 2051 * 2052 * Do any machine-dependent diddling of the exec package when doing ECOFF. 2053 * 2054 */ 2055 int 2056 cpu_exec_ecoff_probe(p, epp) 2057 struct proc *p; 2058 struct exec_package *epp; 2059 { 2060 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2061 int error; 2062 2063 if (execp->f.f_magic == ECOFF_MAGIC_NETBSD_ALPHA) 2064 error = 0; 2065 else 2066 error = ENOEXEC; 2067 2068 return (error); 2069 } 2070 #endif 2071 2072 int 2073 alpha_pa_access(pa) 2074 u_long pa; 2075 { 2076 int i; 2077 2078 for (i = 0; i < mem_cluster_cnt; i++) { 2079 if (pa < mem_clusters[i].start) 2080 continue; 2081 if ((pa - mem_clusters[i].start) >= 2082 (mem_clusters[i].size & ~PAGE_MASK)) 2083 continue; 2084 return (mem_clusters[i].size & PAGE_MASK); /* prot */ 2085 } 2086 2087 /* 2088 * Address is not a memory address. If we're secure, disallow 2089 * access. Otherwise, grant read/write. 2090 */ 2091 if (securelevel > 0) 2092 return (PROT_NONE); 2093 else 2094 return (PROT_READ | PROT_WRITE); 2095 } 2096 2097 /* XXX XXX BEGIN XXX XXX */ 2098 paddr_t alpha_XXX_dmamap_or; /* XXX */ 2099 /* XXX */ 2100 paddr_t /* XXX */ 2101 alpha_XXX_dmamap(v) /* XXX */ 2102 vaddr_t v; /* XXX */ 2103 { /* XXX */ 2104 /* XXX */ 2105 return (vtophys(v) | alpha_XXX_dmamap_or); /* XXX */ 2106 } /* XXX */ 2107 /* XXX XXX END XXX XXX */ 2108 2109 char * 2110 dot_conv(x) 2111 unsigned long x; 2112 { 2113 int i; 2114 char *xc; 2115 static int next; 2116 static char space[2][20]; 2117 2118 xc = space[next ^= 1] + sizeof space[0]; 2119 *--xc = '\0'; 2120 for (i = 0;; ++i) { 2121 if (i && (i & 3) == 0) 2122 *--xc = '.'; 2123 *--xc = "0123456789abcdef"[x & 0xf]; 2124 x >>= 4; 2125 if (x == 0) 2126 break; 2127 } 2128 return xc; 2129 } 2130
Indexes created Wed Oct 01 15:09:59 GMT 2025