machdep.c revision 1.239
1 /* $NetBSD: machdep.c,v 1.239 2001/04/23 15:42:30 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 1.239 2001/04/23 15:42:30 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 /* 917 * Allocate a submap for exec arguments. This map effectively 918 * limits the number of processes exec'ing at any time. 919 */ 920 exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 921 16 * NCARGS, VM_MAP_PAGEABLE, FALSE, NULL); 922 923 /* 924 * Allocate a submap for physio 925 */ 926 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 927 VM_PHYS_SIZE, 0, FALSE, NULL); 928 929 /* 930 * No need to allocate an mbuf cluster submap. Mbuf clusters 931 * are allocated via the pool allocator, and we use K0SEG to 932 * map those pages. 933 */ 934 935 #if defined(DEBUG) 936 pmapdebug = opmapdebug; 937 #endif 938 format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 939 printf("avail memory = %s\n", pbuf); 940 #if 0 941 { 942 extern u_long pmap_pages_stolen; 943 944 format_bytes(pbuf, sizeof(pbuf), pmap_pages_stolen * PAGE_SIZE); 945 printf("stolen memory for VM structures = %s\n", pbuf); 946 } 947 #endif 948 format_bytes(pbuf, sizeof(pbuf), bufpages * NBPG); 949 printf("using %ld buffers containing %s of memory\n", (long)nbuf, pbuf); 950 951 /* 952 * Set up buffers, so they can be used to read disk labels. 953 */ 954 bufinit(); 955 956 /* 957 * Set up the HWPCB so that it's safe to configure secondary 958 * CPUs. 959 */ 960 hwrpb_primary_init(); 961 } 962 963 /* 964 * Retrieve the platform name from the DSR. 965 */ 966 const char * 967 alpha_dsr_sysname() 968 { 969 struct dsrdb *dsr; 970 const char *sysname; 971 972 /* 973 * DSR does not exist on early HWRPB versions. 974 */ 975 if (hwrpb->rpb_version < HWRPB_DSRDB_MINVERS) 976 return (NULL); 977 978 dsr = (struct dsrdb *)(((caddr_t)hwrpb) + hwrpb->rpb_dsrdb_off); 979 sysname = (const char *)((caddr_t)dsr + (dsr->dsr_sysname_off + 980 sizeof(u_int64_t))); 981 return (sysname); 982 } 983 984 /* 985 * Lookup the system specified system variation in the provided table, 986 * returning the model string on match. 987 */ 988 const char * 989 alpha_variation_name(variation, avtp) 990 u_int64_t variation; 991 const struct alpha_variation_table *avtp; 992 { 993 int i; 994 995 for (i = 0; avtp[i].avt_model != NULL; i++) 996 if (avtp[i].avt_variation == variation) 997 return (avtp[i].avt_model); 998 return (NULL); 999 } 1000 1001 /* 1002 * Generate a default platform name based for unknown system variations. 1003 */ 1004 const char * 1005 alpha_unknown_sysname() 1006 { 1007 static char s[128]; /* safe size */ 1008 1009 sprintf(s, "%s family, unknown model variation 0x%lx", 1010 platform.family, hwrpb->rpb_variation & SV_ST_MASK); 1011 return ((const char *)s); 1012 } 1013 1014 void 1015 identifycpu() 1016 { 1017 char *s; 1018 int i; 1019 1020 /* 1021 * print out CPU identification information. 1022 */ 1023 printf("%s", cpu_model); 1024 for(s = cpu_model; *s; ++s) 1025 if(strncasecmp(s, "MHz", 3) == 0) 1026 goto skipMHz; 1027 printf(", %ldMHz", hwrpb->rpb_cc_freq / 1000000); 1028 skipMHz: 1029 printf(", s/n "); 1030 for (i = 0; i < 10; i++) 1031 printf("%c", hwrpb->rpb_ssn[i]); 1032 printf("\n"); 1033 printf("%ld byte page size, %d processor%s.\n", 1034 hwrpb->rpb_page_size, ncpus, ncpus == 1 ? "" : "s"); 1035 #if 0 1036 /* this isn't defined for any systems that we run on? */ 1037 printf("serial number 0x%lx 0x%lx\n", 1038 ((long *)hwrpb->rpb_ssn)[0], ((long *)hwrpb->rpb_ssn)[1]); 1039 1040 /* and these aren't particularly useful! */ 1041 printf("variation: 0x%lx, revision 0x%lx\n", 1042 hwrpb->rpb_variation, *(long *)hwrpb->rpb_revision); 1043 #endif 1044 } 1045 1046 int waittime = -1; 1047 struct pcb dumppcb; 1048 1049 void 1050 cpu_reboot(howto, bootstr) 1051 int howto; 1052 char *bootstr; 1053 { 1054 #if defined(MULTIPROCESSOR) 1055 u_long cpu_id = cpu_number(); 1056 u_long wait_mask = (1UL << cpu_id) | 1057 (1UL << hwrpb->rpb_primary_cpu_id); 1058 int i; 1059 #endif 1060 1061 /* If "always halt" was specified as a boot flag, obey. */ 1062 if ((boothowto & RB_HALT) != 0) 1063 howto |= RB_HALT; 1064 1065 boothowto = howto; 1066 1067 /* If system is cold, just halt. */ 1068 if (cold) { 1069 boothowto |= RB_HALT; 1070 goto haltsys; 1071 } 1072 1073 if ((boothowto & RB_NOSYNC) == 0 && waittime < 0) { 1074 waittime = 0; 1075 vfs_shutdown(); 1076 /* 1077 * If we've been adjusting the clock, the todr 1078 * will be out of synch; adjust it now. 1079 */ 1080 resettodr(); 1081 } 1082 1083 /* Disable interrupts. */ 1084 splhigh(); 1085 1086 #if defined(MULTIPROCESSOR) 1087 /* 1088 * Halt all other CPUs. If we're not the primary, the 1089 * primary will spin, waiting for us to halt. 1090 */ 1091 alpha_broadcast_ipi(ALPHA_IPI_HALT); 1092 1093 for (i = 0; i < 10000; i++) { 1094 alpha_mb(); 1095 if (cpus_running == wait_mask) 1096 break; 1097 delay(1000); 1098 } 1099 alpha_mb(); 1100 if (cpus_running != wait_mask) 1101 printf("WARNING: Unable to halt secondary CPUs (0x%lx)\n", 1102 cpus_running); 1103 #endif /* MULTIPROCESSOR */ 1104 1105 /* If rebooting and a dump is requested do it. */ 1106 #if 0 1107 if ((boothowto & (RB_DUMP | RB_HALT)) == RB_DUMP) 1108 #else 1109 if (boothowto & RB_DUMP) 1110 #endif 1111 dumpsys(); 1112 1113 haltsys: 1114 1115 /* run any shutdown hooks */ 1116 doshutdownhooks(); 1117 1118 #ifdef BOOTKEY 1119 printf("hit any key to %s...\n", howto & RB_HALT ? "halt" : "reboot"); 1120 cnpollc(1); /* for proper keyboard command handling */ 1121 cngetc(); 1122 cnpollc(0); 1123 printf("\n"); 1124 #endif 1125 1126 /* Finally, powerdown/halt/reboot the system. */ 1127 if ((boothowto & RB_POWERDOWN) == RB_POWERDOWN && 1128 platform.powerdown != NULL) { 1129 (*platform.powerdown)(); 1130 printf("WARNING: powerdown failed!\n"); 1131 } 1132 printf("%s\n\n", (boothowto & RB_HALT) ? "halted." : "rebooting..."); 1133 #if defined(MULTIPROCESSOR) 1134 if (cpu_id != hwrpb->rpb_primary_cpu_id) 1135 cpu_halt(); 1136 else 1137 #endif 1138 prom_halt(boothowto & RB_HALT); 1139 /*NOTREACHED*/ 1140 } 1141 1142 /* 1143 * These variables are needed by /sbin/savecore 1144 */ 1145 u_long dumpmag = 0x8fca0101; /* magic number */ 1146 int dumpsize = 0; /* pages */ 1147 long dumplo = 0; /* blocks */ 1148 1149 /* 1150 * cpu_dumpsize: calculate size of machine-dependent kernel core dump headers. 1151 */ 1152 int 1153 cpu_dumpsize() 1154 { 1155 int size; 1156 1157 size = ALIGN(sizeof(kcore_seg_t)) + ALIGN(sizeof(cpu_kcore_hdr_t)) + 1158 ALIGN(mem_cluster_cnt * sizeof(phys_ram_seg_t)); 1159 if (roundup(size, dbtob(1)) != dbtob(1)) 1160 return -1; 1161 1162 return (1); 1163 } 1164 1165 /* 1166 * cpu_dump_mempagecnt: calculate size of RAM (in pages) to be dumped. 1167 */ 1168 u_long 1169 cpu_dump_mempagecnt() 1170 { 1171 u_long i, n; 1172 1173 n = 0; 1174 for (i = 0; i < mem_cluster_cnt; i++) 1175 n += atop(mem_clusters[i].size); 1176 return (n); 1177 } 1178 1179 /* 1180 * cpu_dump: dump machine-dependent kernel core dump headers. 1181 */ 1182 int 1183 cpu_dump() 1184 { 1185 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1186 char buf[dbtob(1)]; 1187 kcore_seg_t *segp; 1188 cpu_kcore_hdr_t *cpuhdrp; 1189 phys_ram_seg_t *memsegp; 1190 int i; 1191 1192 dump = bdevsw[major(dumpdev)].d_dump; 1193 1194 bzero(buf, sizeof buf); 1195 segp = (kcore_seg_t *)buf; 1196 cpuhdrp = (cpu_kcore_hdr_t *)&buf[ALIGN(sizeof(*segp))]; 1197 memsegp = (phys_ram_seg_t *)&buf[ ALIGN(sizeof(*segp)) + 1198 ALIGN(sizeof(*cpuhdrp))]; 1199 1200 /* 1201 * Generate a segment header. 1202 */ 1203 CORE_SETMAGIC(*segp, KCORE_MAGIC, MID_MACHINE, CORE_CPU); 1204 segp->c_size = dbtob(1) - ALIGN(sizeof(*segp)); 1205 1206 /* 1207 * Add the machine-dependent header info. 1208 */ 1209 cpuhdrp->lev1map_pa = ALPHA_K0SEG_TO_PHYS((vaddr_t)kernel_lev1map); 1210 cpuhdrp->page_size = PAGE_SIZE; 1211 cpuhdrp->nmemsegs = mem_cluster_cnt; 1212 1213 /* 1214 * Fill in the memory segment descriptors. 1215 */ 1216 for (i = 0; i < mem_cluster_cnt; i++) { 1217 memsegp[i].start = mem_clusters[i].start; 1218 memsegp[i].size = mem_clusters[i].size & ~PAGE_MASK; 1219 } 1220 1221 return (dump(dumpdev, dumplo, (caddr_t)buf, dbtob(1))); 1222 } 1223 1224 /* 1225 * This is called by main to set dumplo and dumpsize. 1226 * Dumps always skip the first NBPG of disk space 1227 * in case there might be a disk label stored there. 1228 * If there is extra space, put dump at the end to 1229 * reduce the chance that swapping trashes it. 1230 */ 1231 void 1232 cpu_dumpconf() 1233 { 1234 int nblks, dumpblks; /* size of dump area */ 1235 int maj; 1236 1237 if (dumpdev == NODEV) 1238 goto bad; 1239 maj = major(dumpdev); 1240 if (maj < 0 || maj >= nblkdev) 1241 panic("dumpconf: bad dumpdev=0x%x", dumpdev); 1242 if (bdevsw[maj].d_psize == NULL) 1243 goto bad; 1244 nblks = (*bdevsw[maj].d_psize)(dumpdev); 1245 if (nblks <= ctod(1)) 1246 goto bad; 1247 1248 dumpblks = cpu_dumpsize(); 1249 if (dumpblks < 0) 1250 goto bad; 1251 dumpblks += ctod(cpu_dump_mempagecnt()); 1252 1253 /* If dump won't fit (incl. room for possible label), punt. */ 1254 if (dumpblks > (nblks - ctod(1))) 1255 goto bad; 1256 1257 /* Put dump at end of partition */ 1258 dumplo = nblks - dumpblks; 1259 1260 /* dumpsize is in page units, and doesn't include headers. */ 1261 dumpsize = cpu_dump_mempagecnt(); 1262 return; 1263 1264 bad: 1265 dumpsize = 0; 1266 return; 1267 } 1268 1269 /* 1270 * Dump the kernel's image to the swap partition. 1271 */ 1272 #define BYTES_PER_DUMP NBPG 1273 1274 void 1275 dumpsys() 1276 { 1277 u_long totalbytesleft, bytes, i, n, memcl; 1278 u_long maddr; 1279 int psize; 1280 daddr_t blkno; 1281 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1282 int error; 1283 1284 /* Save registers. */ 1285 savectx(&dumppcb); 1286 1287 if (dumpdev == NODEV) 1288 return; 1289 1290 /* 1291 * For dumps during autoconfiguration, 1292 * if dump device has already configured... 1293 */ 1294 if (dumpsize == 0) 1295 cpu_dumpconf(); 1296 if (dumplo <= 0) { 1297 printf("\ndump to dev %u,%u not possible\n", major(dumpdev), 1298 minor(dumpdev)); 1299 return; 1300 } 1301 printf("\ndumping to dev %u,%u offset %ld\n", major(dumpdev), 1302 minor(dumpdev), dumplo); 1303 1304 psize = (*bdevsw[major(dumpdev)].d_psize)(dumpdev); 1305 printf("dump "); 1306 if (psize == -1) { 1307 printf("area unavailable\n"); 1308 return; 1309 } 1310 1311 /* XXX should purge all outstanding keystrokes. */ 1312 1313 if ((error = cpu_dump()) != 0) 1314 goto err; 1315 1316 totalbytesleft = ptoa(cpu_dump_mempagecnt()); 1317 blkno = dumplo + cpu_dumpsize(); 1318 dump = bdevsw[major(dumpdev)].d_dump; 1319 error = 0; 1320 1321 for (memcl = 0; memcl < mem_cluster_cnt; memcl++) { 1322 maddr = mem_clusters[memcl].start; 1323 bytes = mem_clusters[memcl].size & ~PAGE_MASK; 1324 1325 for (i = 0; i < bytes; i += n, totalbytesleft -= n) { 1326 1327 /* Print out how many MBs we to go. */ 1328 if ((totalbytesleft % (1024*1024)) == 0) 1329 printf("%ld ", totalbytesleft / (1024 * 1024)); 1330 1331 /* Limit size for next transfer. */ 1332 n = bytes - i; 1333 if (n > BYTES_PER_DUMP) 1334 n = BYTES_PER_DUMP; 1335 1336 error = (*dump)(dumpdev, blkno, 1337 (caddr_t)ALPHA_PHYS_TO_K0SEG(maddr), n); 1338 if (error) 1339 goto err; 1340 maddr += n; 1341 blkno += btodb(n); /* XXX? */ 1342 1343 /* XXX should look for keystrokes, to cancel. */ 1344 } 1345 } 1346 1347 err: 1348 switch (error) { 1349 1350 case ENXIO: 1351 printf("device bad\n"); 1352 break; 1353 1354 case EFAULT: 1355 printf("device not ready\n"); 1356 break; 1357 1358 case EINVAL: 1359 printf("area improper\n"); 1360 break; 1361 1362 case EIO: 1363 printf("i/o error\n"); 1364 break; 1365 1366 case EINTR: 1367 printf("aborted from console\n"); 1368 break; 1369 1370 case 0: 1371 printf("succeeded\n"); 1372 break; 1373 1374 default: 1375 printf("error %d\n", error); 1376 break; 1377 } 1378 printf("\n\n"); 1379 delay(1000); 1380 } 1381 1382 void 1383 frametoreg(framep, regp) 1384 struct trapframe *framep; 1385 struct reg *regp; 1386 { 1387 1388 regp->r_regs[R_V0] = framep->tf_regs[FRAME_V0]; 1389 regp->r_regs[R_T0] = framep->tf_regs[FRAME_T0]; 1390 regp->r_regs[R_T1] = framep->tf_regs[FRAME_T1]; 1391 regp->r_regs[R_T2] = framep->tf_regs[FRAME_T2]; 1392 regp->r_regs[R_T3] = framep->tf_regs[FRAME_T3]; 1393 regp->r_regs[R_T4] = framep->tf_regs[FRAME_T4]; 1394 regp->r_regs[R_T5] = framep->tf_regs[FRAME_T5]; 1395 regp->r_regs[R_T6] = framep->tf_regs[FRAME_T6]; 1396 regp->r_regs[R_T7] = framep->tf_regs[FRAME_T7]; 1397 regp->r_regs[R_S0] = framep->tf_regs[FRAME_S0]; 1398 regp->r_regs[R_S1] = framep->tf_regs[FRAME_S1]; 1399 regp->r_regs[R_S2] = framep->tf_regs[FRAME_S2]; 1400 regp->r_regs[R_S3] = framep->tf_regs[FRAME_S3]; 1401 regp->r_regs[R_S4] = framep->tf_regs[FRAME_S4]; 1402 regp->r_regs[R_S5] = framep->tf_regs[FRAME_S5]; 1403 regp->r_regs[R_S6] = framep->tf_regs[FRAME_S6]; 1404 regp->r_regs[R_A0] = framep->tf_regs[FRAME_A0]; 1405 regp->r_regs[R_A1] = framep->tf_regs[FRAME_A1]; 1406 regp->r_regs[R_A2] = framep->tf_regs[FRAME_A2]; 1407 regp->r_regs[R_A3] = framep->tf_regs[FRAME_A3]; 1408 regp->r_regs[R_A4] = framep->tf_regs[FRAME_A4]; 1409 regp->r_regs[R_A5] = framep->tf_regs[FRAME_A5]; 1410 regp->r_regs[R_T8] = framep->tf_regs[FRAME_T8]; 1411 regp->r_regs[R_T9] = framep->tf_regs[FRAME_T9]; 1412 regp->r_regs[R_T10] = framep->tf_regs[FRAME_T10]; 1413 regp->r_regs[R_T11] = framep->tf_regs[FRAME_T11]; 1414 regp->r_regs[R_RA] = framep->tf_regs[FRAME_RA]; 1415 regp->r_regs[R_T12] = framep->tf_regs[FRAME_T12]; 1416 regp->r_regs[R_AT] = framep->tf_regs[FRAME_AT]; 1417 regp->r_regs[R_GP] = framep->tf_regs[FRAME_GP]; 1418 /* regp->r_regs[R_SP] = framep->tf_regs[FRAME_SP]; XXX */ 1419 regp->r_regs[R_ZERO] = 0; 1420 } 1421 1422 void 1423 regtoframe(regp, framep) 1424 struct reg *regp; 1425 struct trapframe *framep; 1426 { 1427 1428 framep->tf_regs[FRAME_V0] = regp->r_regs[R_V0]; 1429 framep->tf_regs[FRAME_T0] = regp->r_regs[R_T0]; 1430 framep->tf_regs[FRAME_T1] = regp->r_regs[R_T1]; 1431 framep->tf_regs[FRAME_T2] = regp->r_regs[R_T2]; 1432 framep->tf_regs[FRAME_T3] = regp->r_regs[R_T3]; 1433 framep->tf_regs[FRAME_T4] = regp->r_regs[R_T4]; 1434 framep->tf_regs[FRAME_T5] = regp->r_regs[R_T5]; 1435 framep->tf_regs[FRAME_T6] = regp->r_regs[R_T6]; 1436 framep->tf_regs[FRAME_T7] = regp->r_regs[R_T7]; 1437 framep->tf_regs[FRAME_S0] = regp->r_regs[R_S0]; 1438 framep->tf_regs[FRAME_S1] = regp->r_regs[R_S1]; 1439 framep->tf_regs[FRAME_S2] = regp->r_regs[R_S2]; 1440 framep->tf_regs[FRAME_S3] = regp->r_regs[R_S3]; 1441 framep->tf_regs[FRAME_S4] = regp->r_regs[R_S4]; 1442 framep->tf_regs[FRAME_S5] = regp->r_regs[R_S5]; 1443 framep->tf_regs[FRAME_S6] = regp->r_regs[R_S6]; 1444 framep->tf_regs[FRAME_A0] = regp->r_regs[R_A0]; 1445 framep->tf_regs[FRAME_A1] = regp->r_regs[R_A1]; 1446 framep->tf_regs[FRAME_A2] = regp->r_regs[R_A2]; 1447 framep->tf_regs[FRAME_A3] = regp->r_regs[R_A3]; 1448 framep->tf_regs[FRAME_A4] = regp->r_regs[R_A4]; 1449 framep->tf_regs[FRAME_A5] = regp->r_regs[R_A5]; 1450 framep->tf_regs[FRAME_T8] = regp->r_regs[R_T8]; 1451 framep->tf_regs[FRAME_T9] = regp->r_regs[R_T9]; 1452 framep->tf_regs[FRAME_T10] = regp->r_regs[R_T10]; 1453 framep->tf_regs[FRAME_T11] = regp->r_regs[R_T11]; 1454 framep->tf_regs[FRAME_RA] = regp->r_regs[R_RA]; 1455 framep->tf_regs[FRAME_T12] = regp->r_regs[R_T12]; 1456 framep->tf_regs[FRAME_AT] = regp->r_regs[R_AT]; 1457 framep->tf_regs[FRAME_GP] = regp->r_regs[R_GP]; 1458 /* framep->tf_regs[FRAME_SP] = regp->r_regs[R_SP]; XXX */ 1459 /* ??? = regp->r_regs[R_ZERO]; */ 1460 } 1461 1462 void 1463 printregs(regp) 1464 struct reg *regp; 1465 { 1466 int i; 1467 1468 for (i = 0; i < 32; i++) 1469 printf("R%d:\t0x%016lx%s", i, regp->r_regs[i], 1470 i & 1 ? "\n" : "\t"); 1471 } 1472 1473 void 1474 regdump(framep) 1475 struct trapframe *framep; 1476 { 1477 struct reg reg; 1478 1479 frametoreg(framep, ®); 1480 reg.r_regs[R_SP] = alpha_pal_rdusp(); 1481 1482 printf("REGISTERS:\n"); 1483 printregs(®); 1484 } 1485 1486 1487 /* 1488 * Send an interrupt to process. 1489 */ 1490 void 1491 sendsig(catcher, sig, mask, code) 1492 sig_t catcher; 1493 int sig; 1494 sigset_t *mask; 1495 u_long code; 1496 { 1497 struct proc *p = curproc; 1498 struct sigcontext *scp, ksc; 1499 struct trapframe *frame; 1500 int onstack, fsize, rndfsize; 1501 1502 frame = p->p_md.md_tf; 1503 1504 /* Do we need to jump onto the signal stack? */ 1505 onstack = 1506 (p->p_sigctx.ps_sigstk.ss_flags & (SS_DISABLE | SS_ONSTACK)) == 0 && 1507 (SIGACTION(p, sig).sa_flags & SA_ONSTACK) != 0; 1508 1509 /* Allocate space for the signal handler context. */ 1510 fsize = sizeof(ksc); 1511 rndfsize = ((fsize + 15) / 16) * 16; 1512 1513 if (onstack) 1514 scp = (struct sigcontext *)((caddr_t)p->p_sigctx.ps_sigstk.ss_sp + 1515 p->p_sigctx.ps_sigstk.ss_size); 1516 else 1517 scp = (struct sigcontext *)(alpha_pal_rdusp()); 1518 scp = (struct sigcontext *)((caddr_t)scp - rndfsize); 1519 1520 #ifdef DEBUG 1521 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1522 printf("sendsig(%d): sig %d ssp %p usp %p\n", p->p_pid, 1523 sig, &onstack, scp); 1524 #endif 1525 1526 /* Build stack frame for signal trampoline. */ 1527 ksc.sc_pc = frame->tf_regs[FRAME_PC]; 1528 ksc.sc_ps = frame->tf_regs[FRAME_PS]; 1529 1530 /* Save register context. */ 1531 frametoreg(frame, (struct reg *)ksc.sc_regs); 1532 ksc.sc_regs[R_ZERO] = 0xACEDBADE; /* magic number */ 1533 ksc.sc_regs[R_SP] = alpha_pal_rdusp(); 1534 1535 /* save the floating-point state, if necessary, then copy it. */ 1536 if (p->p_addr->u_pcb.pcb_fpcpu != NULL) 1537 fpusave_proc(p, 1); 1538 ksc.sc_ownedfp = p->p_md.md_flags & MDP_FPUSED; 1539 bcopy(&p->p_addr->u_pcb.pcb_fp, (struct fpreg *)ksc.sc_fpregs, 1540 sizeof(struct fpreg)); 1541 ksc.sc_fp_control = 0; /* XXX ? */ 1542 bzero(ksc.sc_reserved, sizeof ksc.sc_reserved); /* XXX */ 1543 bzero(ksc.sc_xxx, sizeof ksc.sc_xxx); /* XXX */ 1544 1545 /* Save signal stack. */ 1546 ksc.sc_onstack = p->p_sigctx.ps_sigstk.ss_flags & SS_ONSTACK; 1547 1548 /* Save signal mask. */ 1549 ksc.sc_mask = *mask; 1550 1551 #ifdef COMPAT_13 1552 /* 1553 * XXX We always have to save an old style signal mask because 1554 * XXX we might be delivering a signal to a process which will 1555 * XXX escape from the signal in a non-standard way and invoke 1556 * XXX sigreturn() directly. 1557 */ 1558 { 1559 /* Note: it's a long in the stack frame. */ 1560 sigset13_t mask13; 1561 1562 native_sigset_to_sigset13(mask, &mask13); 1563 ksc.__sc_mask13 = mask13; 1564 } 1565 #endif 1566 1567 #ifdef COMPAT_OSF1 1568 /* 1569 * XXX Create an OSF/1-style sigcontext and associated goo. 1570 */ 1571 #endif 1572 1573 if (copyout(&ksc, (caddr_t)scp, fsize) != 0) { 1574 /* 1575 * Process has trashed its stack; give it an illegal 1576 * instruction to halt it in its tracks. 1577 */ 1578 #ifdef DEBUG 1579 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1580 printf("sendsig(%d): copyout failed on sig %d\n", 1581 p->p_pid, sig); 1582 #endif 1583 sigexit(p, SIGILL); 1584 /* NOTREACHED */ 1585 } 1586 #ifdef DEBUG 1587 if (sigdebug & SDB_FOLLOW) 1588 printf("sendsig(%d): sig %d scp %p code %lx\n", p->p_pid, sig, 1589 scp, code); 1590 #endif 1591 1592 /* Set up the registers to return to sigcode. */ 1593 frame->tf_regs[FRAME_PC] = (u_int64_t)p->p_sigctx.ps_sigcode; 1594 frame->tf_regs[FRAME_A0] = sig; 1595 frame->tf_regs[FRAME_A1] = code; 1596 frame->tf_regs[FRAME_A2] = (u_int64_t)scp; 1597 frame->tf_regs[FRAME_T12] = (u_int64_t)catcher; /* t12 is pv */ 1598 alpha_pal_wrusp((unsigned long)scp); 1599 1600 /* Remember that we're now on the signal stack. */ 1601 if (onstack) 1602 p->p_sigctx.ps_sigstk.ss_flags |= SS_ONSTACK; 1603 1604 #ifdef DEBUG 1605 if (sigdebug & SDB_FOLLOW) 1606 printf("sendsig(%d): pc %lx, catcher %lx\n", p->p_pid, 1607 frame->tf_regs[FRAME_PC], frame->tf_regs[FRAME_A3]); 1608 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1609 printf("sendsig(%d): sig %d returns\n", 1610 p->p_pid, sig); 1611 #endif 1612 } 1613 1614 /* 1615 * System call to cleanup state after a signal 1616 * has been taken. Reset signal mask and 1617 * stack state from context left by sendsig (above). 1618 * Return to previous pc and psl as specified by 1619 * context left by sendsig. Check carefully to 1620 * make sure that the user has not modified the 1621 * psl to gain improper privileges or to cause 1622 * a machine fault. 1623 */ 1624 /* ARGSUSED */ 1625 int 1626 sys___sigreturn14(p, v, retval) 1627 struct proc *p; 1628 void *v; 1629 register_t *retval; 1630 { 1631 struct sys___sigreturn14_args /* { 1632 syscallarg(struct sigcontext *) sigcntxp; 1633 } */ *uap = v; 1634 struct sigcontext *scp, ksc; 1635 1636 /* 1637 * The trampoline code hands us the context. 1638 * It is unsafe to keep track of it ourselves, in the event that a 1639 * program jumps out of a signal handler. 1640 */ 1641 scp = SCARG(uap, sigcntxp); 1642 #ifdef DEBUG 1643 if (sigdebug & SDB_FOLLOW) 1644 printf("sigreturn: pid %d, scp %p\n", p->p_pid, scp); 1645 #endif 1646 if (ALIGN(scp) != (u_int64_t)scp) 1647 return (EINVAL); 1648 1649 if (copyin((caddr_t)scp, &ksc, sizeof(ksc)) != 0) 1650 return (EFAULT); 1651 1652 if (ksc.sc_regs[R_ZERO] != 0xACEDBADE) /* magic number */ 1653 return (EINVAL); 1654 1655 /* Restore register context. */ 1656 p->p_md.md_tf->tf_regs[FRAME_PC] = ksc.sc_pc; 1657 p->p_md.md_tf->tf_regs[FRAME_PS] = 1658 (ksc.sc_ps | ALPHA_PSL_USERSET) & ~ALPHA_PSL_USERCLR; 1659 1660 regtoframe((struct reg *)ksc.sc_regs, p->p_md.md_tf); 1661 alpha_pal_wrusp(ksc.sc_regs[R_SP]); 1662 1663 /* XXX ksc.sc_ownedfp ? */ 1664 if (p->p_addr->u_pcb.pcb_fpcpu != NULL) 1665 fpusave_proc(p, 0); 1666 bcopy((struct fpreg *)ksc.sc_fpregs, &p->p_addr->u_pcb.pcb_fp, 1667 sizeof(struct fpreg)); 1668 /* XXX ksc.sc_fp_control ? */ 1669 1670 /* Restore signal stack. */ 1671 if (ksc.sc_onstack & SS_ONSTACK) 1672 p->p_sigctx.ps_sigstk.ss_flags |= SS_ONSTACK; 1673 else 1674 p->p_sigctx.ps_sigstk.ss_flags &= ~SS_ONSTACK; 1675 1676 /* Restore signal mask. */ 1677 (void) sigprocmask1(p, SIG_SETMASK, &ksc.sc_mask, 0); 1678 1679 #ifdef DEBUG 1680 if (sigdebug & SDB_FOLLOW) 1681 printf("sigreturn(%d): returns\n", p->p_pid); 1682 #endif 1683 return (EJUSTRETURN); 1684 } 1685 1686 /* 1687 * machine dependent system variables. 1688 */ 1689 int 1690 cpu_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 1691 int *name; 1692 u_int namelen; 1693 void *oldp; 1694 size_t *oldlenp; 1695 void *newp; 1696 size_t newlen; 1697 struct proc *p; 1698 { 1699 dev_t consdev; 1700 1701 /* all sysctl names at this level are terminal */ 1702 if (namelen != 1) 1703 return (ENOTDIR); /* overloaded */ 1704 1705 switch (name[0]) { 1706 case CPU_CONSDEV: 1707 if (cn_tab != NULL) 1708 consdev = cn_tab->cn_dev; 1709 else 1710 consdev = NODEV; 1711 return (sysctl_rdstruct(oldp, oldlenp, newp, &consdev, 1712 sizeof consdev)); 1713 1714 case CPU_ROOT_DEVICE: 1715 return (sysctl_rdstring(oldp, oldlenp, newp, 1716 root_device->dv_xname)); 1717 1718 case CPU_UNALIGNED_PRINT: 1719 return (sysctl_int(oldp, oldlenp, newp, newlen, 1720 &alpha_unaligned_print)); 1721 1722 case CPU_UNALIGNED_FIX: 1723 return (sysctl_int(oldp, oldlenp, newp, newlen, 1724 &alpha_unaligned_fix)); 1725 1726 case CPU_UNALIGNED_SIGBUS: 1727 return (sysctl_int(oldp, oldlenp, newp, newlen, 1728 &alpha_unaligned_sigbus)); 1729 1730 case CPU_BOOTED_KERNEL: 1731 return (sysctl_rdstring(oldp, oldlenp, newp, 1732 bootinfo.booted_kernel)); 1733 1734 default: 1735 return (EOPNOTSUPP); 1736 } 1737 /* NOTREACHED */ 1738 } 1739 1740 /* 1741 * Set registers on exec. 1742 */ 1743 void 1744 setregs(p, pack, stack) 1745 register struct proc *p; 1746 struct exec_package *pack; 1747 u_long stack; 1748 { 1749 struct trapframe *tfp = p->p_md.md_tf; 1750 #ifdef DEBUG 1751 int i; 1752 #endif 1753 1754 #ifdef DEBUG 1755 /* 1756 * Crash and dump, if the user requested it. 1757 */ 1758 if (boothowto & RB_DUMP) 1759 panic("crash requested by boot flags"); 1760 #endif 1761 1762 #ifdef DEBUG 1763 for (i = 0; i < FRAME_SIZE; i++) 1764 tfp->tf_regs[i] = 0xbabefacedeadbeef; 1765 #else 1766 bzero(tfp->tf_regs, FRAME_SIZE * sizeof tfp->tf_regs[0]); 1767 #endif 1768 bzero(&p->p_addr->u_pcb.pcb_fp, sizeof p->p_addr->u_pcb.pcb_fp); 1769 p->p_addr->u_pcb.pcb_fp.fpr_cr = FPCR_INED 1770 | FPCR_UNFD 1771 | FPCR_UNDZ 1772 | FPCR_DYN(FP_RN) 1773 | FPCR_OVFD 1774 | FPCR_DZED 1775 | FPCR_INVD 1776 | FPCR_DNZ; 1777 alpha_pal_wrusp(stack); 1778 tfp->tf_regs[FRAME_PS] = ALPHA_PSL_USERSET; 1779 tfp->tf_regs[FRAME_PC] = pack->ep_entry & ~3; 1780 1781 tfp->tf_regs[FRAME_A0] = stack; /* a0 = sp */ 1782 tfp->tf_regs[FRAME_A1] = 0; /* a1 = rtld cleanup */ 1783 tfp->tf_regs[FRAME_A2] = 0; /* a2 = rtld object */ 1784 tfp->tf_regs[FRAME_A3] = (u_int64_t)PS_STRINGS; /* a3 = ps_strings */ 1785 tfp->tf_regs[FRAME_T12] = tfp->tf_regs[FRAME_PC]; /* a.k.a. PV */ 1786 1787 p->p_md.md_flags &= ~MDP_FPUSED; 1788 if (p->p_addr->u_pcb.pcb_fpcpu != NULL) 1789 fpusave_proc(p, 0); 1790 } 1791 1792 /* 1793 * Release the FPU. 1794 */ 1795 void 1796 fpusave_cpu(struct cpu_info *ci, int save) 1797 { 1798 struct proc *p; 1799 #if defined(MULTIPROCESSOR) 1800 int s; 1801 #endif 1802 1803 KDASSERT(ci == curcpu()); 1804 1805 #if defined(MULTIPROCESSOR) 1806 atomic_setbits_ulong(&ci->ci_flags, CPUF_FPUSAVE); 1807 #endif 1808 1809 p = ci->ci_fpcurproc; 1810 if (p == NULL) 1811 goto out; 1812 1813 if (save) { 1814 alpha_pal_wrfen(1); 1815 savefpstate(&p->p_addr->u_pcb.pcb_fp); 1816 } 1817 1818 alpha_pal_wrfen(0); 1819 1820 FPCPU_LOCK(&p->p_addr->u_pcb, s); 1821 1822 p->p_addr->u_pcb.pcb_fpcpu = NULL; 1823 ci->ci_fpcurproc = NULL; 1824 1825 FPCPU_UNLOCK(&p->p_addr->u_pcb, s); 1826 1827 out: 1828 #if defined(MULTIPROCESSOR) 1829 atomic_clearbits_ulong(&ci->ci_flags, CPUF_FPUSAVE); 1830 #endif 1831 return; 1832 } 1833 1834 /* 1835 * Synchronize FP state for this process. 1836 */ 1837 void 1838 fpusave_proc(struct proc *p, int save) 1839 { 1840 struct cpu_info *ci = curcpu(); 1841 struct cpu_info *oci; 1842 #if defined(MULTIPROCESSOR) 1843 u_long ipi = save ? ALPHA_IPI_SYNCH_FPU : ALPHA_IPI_DISCARD_FPU; 1844 int s, spincount; 1845 #endif 1846 1847 KDASSERT(p->p_addr != NULL); 1848 KDASSERT(p->p_flag & P_INMEM); 1849 1850 FPCPU_LOCK(&p->p_addr->u_pcb, s); 1851 1852 oci = p->p_addr->u_pcb.pcb_fpcpu; 1853 if (oci == NULL) { 1854 FPCPU_UNLOCK(&p->p_addr->u_pcb, s); 1855 return; 1856 } 1857 1858 #if defined(MULTIPROCESSOR) 1859 if (oci == ci) { 1860 KASSERT(ci->ci_fpcurproc == p); 1861 FPCPU_UNLOCK(&p->p_addr->u_pcb, s); 1862 fpusave_cpu(ci, save); 1863 return; 1864 } 1865 1866 KASSERT(oci->ci_fpcurproc == p); 1867 alpha_send_ipi(oci->ci_cpuid, ipi); 1868 FPCPU_UNLOCK(&p->p_addr->u_pcb, s); 1869 1870 spincount = 0; 1871 while (p->p_addr->u_pcb.pcb_fpcpu != NULL) { 1872 spincount++; 1873 delay(1000); /* XXX */ 1874 if (spincount > 10000) 1875 panic("fpsave ipi didn't"); 1876 } 1877 #else 1878 KASSERT(ci->ci_fpcurproc == p); 1879 FPCPU_UNLOCK(&p->p_addr->u_pcb, s); 1880 fpusave_cpu(ci, save); 1881 #endif /* MULTIPROCESSOR */ 1882 } 1883 1884 /* 1885 * The following primitives manipulate the run queues. _whichqs tells which 1886 * of the 32 queues _qs have processes in them. Setrunqueue puts processes 1887 * into queues, Remrunqueue removes them from queues. The running process is 1888 * on no queue, other processes are on a queue related to p->p_priority, 1889 * divided by 4 actually to shrink the 0-127 range of priorities into the 32 1890 * available queues. 1891 */ 1892 /* 1893 * setrunqueue(p) 1894 * proc *p; 1895 * 1896 * Call should be made at splclock(), and p->p_stat should be SRUN. 1897 */ 1898 1899 void 1900 setrunqueue(p) 1901 struct proc *p; 1902 { 1903 int bit; 1904 1905 /* firewall: p->p_back must be NULL */ 1906 if (p->p_back != NULL) 1907 panic("setrunqueue"); 1908 1909 bit = p->p_priority >> 2; 1910 sched_whichqs |= (1 << bit); 1911 p->p_forw = (struct proc *)&sched_qs[bit]; 1912 p->p_back = sched_qs[bit].ph_rlink; 1913 p->p_back->p_forw = p; 1914 sched_qs[bit].ph_rlink = p; 1915 } 1916 1917 /* 1918 * remrunqueue(p) 1919 * 1920 * Call should be made at splclock(). 1921 */ 1922 void 1923 remrunqueue(p) 1924 struct proc *p; 1925 { 1926 int bit; 1927 1928 bit = p->p_priority >> 2; 1929 if ((sched_whichqs & (1 << bit)) == 0) 1930 panic("remrunqueue"); 1931 1932 p->p_back->p_forw = p->p_forw; 1933 p->p_forw->p_back = p->p_back; 1934 p->p_back = NULL; /* for firewall checking. */ 1935 1936 if ((struct proc *)&sched_qs[bit] == sched_qs[bit].ph_link) 1937 sched_whichqs &= ~(1 << bit); 1938 } 1939 1940 /* 1941 * Return the best possible estimate of the time in the timeval 1942 * to which tvp points. Unfortunately, we can't read the hardware registers. 1943 * We guarantee that the time will be greater than the value obtained by a 1944 * previous call. 1945 * 1946 * XXX PLEASE REWRITE ME TO USE THE CYCLE COUNTER AND DEAL WITH 1947 * XXX MULTIPLE CPUs IN A SANE WAY! 1948 */ 1949 void 1950 microtime(tvp) 1951 register struct timeval *tvp; 1952 { 1953 static struct timeval lasttime; 1954 static struct simplelock microtime_slock = SIMPLELOCK_INITIALIZER; 1955 int s; 1956 1957 s = splclock(); 1958 simple_lock(µtime_slock); 1959 1960 *tvp = time; 1961 #ifdef notdef 1962 tvp->tv_usec += clkread(); 1963 while (tvp->tv_usec >= 1000000) { 1964 tvp->tv_sec++; 1965 tvp->tv_usec -= 1000000; 1966 } 1967 #endif 1968 if (tvp->tv_sec == lasttime.tv_sec && 1969 tvp->tv_usec <= lasttime.tv_usec && 1970 (tvp->tv_usec = lasttime.tv_usec + 1) >= 1000000) { 1971 tvp->tv_sec++; 1972 tvp->tv_usec -= 1000000; 1973 } 1974 lasttime = *tvp; 1975 1976 simple_unlock(µtime_slock); 1977 splx(s); 1978 } 1979 1980 /* 1981 * Wait "n" microseconds. 1982 */ 1983 void 1984 delay(n) 1985 unsigned long n; 1986 { 1987 unsigned long pcc0, pcc1, curcycle, cycles, usec; 1988 1989 if (n == 0) 1990 return; 1991 1992 pcc0 = alpha_rpcc() & 0xffffffffUL; 1993 cycles = 0; 1994 usec = 0; 1995 1996 while (usec <= n) { 1997 /* 1998 * Get the next CPU cycle count- assumes that we cannot 1999 * have had more than one 32 bit overflow. 2000 */ 2001 pcc1 = alpha_rpcc() & 0xffffffffUL; 2002 if (pcc1 < pcc0) 2003 curcycle = (pcc1 + 0x100000000UL) - pcc0; 2004 else 2005 curcycle = pcc1 - pcc0; 2006 2007 /* 2008 * We now have the number of processor cycles since we 2009 * last checked. Add the current cycle count to the 2010 * running total. If it's over cycles_per_usec, increment 2011 * the usec counter. 2012 */ 2013 cycles += curcycle; 2014 while (cycles > cycles_per_usec) { 2015 usec++; 2016 cycles -= cycles_per_usec; 2017 } 2018 pcc0 = pcc1; 2019 } 2020 } 2021 2022 #if defined(COMPAT_OSF1) || 1 /* XXX */ 2023 void cpu_exec_ecoff_setregs __P((struct proc *, struct exec_package *, 2024 u_long)); 2025 #endif 2026 2027 #if 1 /* XXX */ 2028 void 2029 cpu_exec_ecoff_setregs(p, epp, stack) 2030 struct proc *p; 2031 struct exec_package *epp; 2032 u_long stack; 2033 { 2034 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2035 2036 setregs(p, epp, stack); 2037 p->p_md.md_tf->tf_regs[FRAME_GP] = execp->a.gp_value; 2038 } 2039 2040 /* 2041 * cpu_exec_ecoff_hook(): 2042 * cpu-dependent ECOFF format hook for execve(). 2043 * 2044 * Do any machine-dependent diddling of the exec package when doing ECOFF. 2045 * 2046 */ 2047 int 2048 cpu_exec_ecoff_probe(p, epp) 2049 struct proc *p; 2050 struct exec_package *epp; 2051 { 2052 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2053 int error; 2054 2055 if (execp->f.f_magic == ECOFF_MAGIC_NETBSD_ALPHA) 2056 error = 0; 2057 else 2058 error = ENOEXEC; 2059 2060 return (error); 2061 } 2062 #endif 2063 2064 int 2065 alpha_pa_access(pa) 2066 u_long pa; 2067 { 2068 int i; 2069 2070 for (i = 0; i < mem_cluster_cnt; i++) { 2071 if (pa < mem_clusters[i].start) 2072 continue; 2073 if ((pa - mem_clusters[i].start) >= 2074 (mem_clusters[i].size & ~PAGE_MASK)) 2075 continue; 2076 return (mem_clusters[i].size & PAGE_MASK); /* prot */ 2077 } 2078 2079 /* 2080 * Address is not a memory address. If we're secure, disallow 2081 * access. Otherwise, grant read/write. 2082 */ 2083 if (securelevel > 0) 2084 return (PROT_NONE); 2085 else 2086 return (PROT_READ | PROT_WRITE); 2087 } 2088 2089 /* XXX XXX BEGIN XXX XXX */ 2090 paddr_t alpha_XXX_dmamap_or; /* XXX */ 2091 /* XXX */ 2092 paddr_t /* XXX */ 2093 alpha_XXX_dmamap(v) /* XXX */ 2094 vaddr_t v; /* XXX */ 2095 { /* XXX */ 2096 /* XXX */ 2097 return (vtophys(v) | alpha_XXX_dmamap_or); /* XXX */ 2098 } /* XXX */ 2099 /* XXX XXX END XXX XXX */ 2100 2101 char * 2102 dot_conv(x) 2103 unsigned long x; 2104 { 2105 int i; 2106 char *xc; 2107 static int next; 2108 static char space[2][20]; 2109 2110 xc = space[next ^= 1] + sizeof space[0]; 2111 *--xc = '\0'; 2112 for (i = 0;; ++i) { 2113 if (i && (i & 3) == 0) 2114 *--xc = '.'; 2115 *--xc = "0123456789abcdef"[x & 0xf]; 2116 x >>= 4; 2117 if (x == 0) 2118 break; 2119 } 2120 return xc; 2121 } 2122
Indexes created Sat Oct 11 19:10:01 GMT 2025