machdep.c revision 1.129
1 /* $NetBSD: machdep.c,v 1.129 1998/07/05 00:51:04 jonathan Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 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_uvm.h" 69 #include "opt_pmap_new.h" 70 #include "opt_dec_3000_300.h" 71 #include "opt_dec_3000_500.h" 72 #include "opt_compat_osf1.h" 73 #include "opt_inet.h" 74 #include "opt_atalk.h" 75 76 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 77 78 __KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.129 1998/07/05 00:51:04 jonathan Exp $"); 79 80 #include <sys/param.h> 81 #include <sys/systm.h> 82 #include <sys/signalvar.h> 83 #include <sys/kernel.h> 84 #include <sys/map.h> 85 #include <sys/proc.h> 86 #include <sys/buf.h> 87 #include <sys/reboot.h> 88 #include <sys/device.h> 89 #include <sys/file.h> 90 #ifdef REAL_CLISTS 91 #include <sys/clist.h> 92 #endif 93 #include <sys/callout.h> 94 #include <sys/malloc.h> 95 #include <sys/mbuf.h> 96 #include <sys/mman.h> 97 #include <sys/msgbuf.h> 98 #include <sys/ioctl.h> 99 #include <sys/tty.h> 100 #include <sys/user.h> 101 #include <sys/exec.h> 102 #include <sys/exec_ecoff.h> 103 #include <vm/vm.h> 104 #include <sys/sysctl.h> 105 #include <sys/core.h> 106 #include <sys/kcore.h> 107 #include <machine/kcore.h> 108 #ifdef SYSVMSG 109 #include <sys/msg.h> 110 #endif 111 #ifdef SYSVSEM 112 #include <sys/sem.h> 113 #endif 114 #ifdef SYSVSHM 115 #include <sys/shm.h> 116 #endif 117 118 #include <sys/mount.h> 119 #include <sys/syscallargs.h> 120 121 #include <vm/vm_kern.h> 122 123 #if defined(UVM) 124 #include <uvm/uvm_extern.h> 125 #endif 126 127 #include <dev/cons.h> 128 129 #include <machine/autoconf.h> 130 #include <machine/cpu.h> 131 #include <machine/reg.h> 132 #include <machine/rpb.h> 133 #include <machine/prom.h> 134 #include <machine/conf.h> 135 136 #include <net/netisr.h> 137 #include <net/if.h> 138 139 #ifdef INET 140 #include <net/route.h> 141 #include <netinet/in.h> 142 #include <netinet/ip_var.h> 143 #include "arp.h" 144 #if NARP > 0 145 #include <netinet/if_inarp.h> 146 #endif 147 #endif 148 #ifdef NS 149 #include <netns/ns_var.h> 150 #endif 151 #ifdef ISO 152 #include <netiso/iso.h> 153 #include <netiso/clnp.h> 154 #endif 155 #ifdef CCITT 156 #include <netccitt/x25.h> 157 #include <netccitt/pk.h> 158 #include <netccitt/pk_extern.h> 159 #endif 160 #ifdef NATM 161 #include <netnatm/natm.h> 162 #endif 163 #ifdef NETATALK 164 #include <netatalk/at_extern.h> 165 #endif 166 #include "ppp.h" 167 #if NPPP > 0 168 #include <net/ppp_defs.h> 169 #include <net/if_ppp.h> 170 #endif 171 172 #ifdef DDB 173 #include <machine/db_machdep.h> 174 #include <ddb/db_access.h> 175 #include <ddb/db_sym.h> 176 #include <ddb/db_extern.h> 177 #include <ddb/db_interface.h> 178 #endif 179 180 #if defined(UVM) 181 vm_map_t exec_map = NULL; 182 vm_map_t mb_map = NULL; 183 vm_map_t phys_map = NULL; 184 #else 185 vm_map_t buffer_map; 186 #endif 187 188 /* 189 * Declare these as initialized data so we can patch them. 190 */ 191 int nswbuf = 0; 192 #ifdef NBUF 193 int nbuf = NBUF; 194 #else 195 int nbuf = 0; 196 #endif 197 #ifdef BUFPAGES 198 int bufpages = BUFPAGES; 199 #else 200 int bufpages = 0; 201 #endif 202 caddr_t msgbufaddr; 203 204 int maxmem; /* max memory per process */ 205 206 int totalphysmem; /* total amount of physical memory in system */ 207 int physmem; /* physical memory used by NetBSD + some rsvd */ 208 int resvmem; /* amount of memory reserved for PROM */ 209 int unusedmem; /* amount of memory for OS that we don't use */ 210 int unknownmem; /* amount of memory with an unknown use */ 211 212 int cputype; /* system type, from the RPB */ 213 214 /* 215 * XXX We need an address to which we can assign things so that they 216 * won't be optimized away because we didn't use the value. 217 */ 218 u_int32_t no_optimize; 219 220 /* the following is used externally (sysctl_hw) */ 221 char machine[] = MACHINE; /* from <machine/param.h> */ 222 char machine_arch[] = MACHINE_ARCH; /* from <machine/param.h> */ 223 char cpu_model[128]; 224 225 struct user *proc0paddr; 226 227 /* Number of machine cycles per microsecond */ 228 u_int64_t cycles_per_usec; 229 230 /* number of cpus in the box. really! */ 231 int ncpus; 232 233 struct bootinfo_kernel bootinfo; 234 235 /* For built-in TCDS */ 236 #if defined(DEC_3000_300) || defined(DEC_3000_500) 237 u_int8_t dec_3000_scsiid[2], dec_3000_scsifast[2]; 238 #endif 239 240 struct platform platform; 241 242 u_int32_t vm_mbuf_size = _VM_MBUF_SIZE; 243 u_int32_t vm_kmem_size = _VM_KMEM_SIZE; 244 u_int32_t vm_phys_size = _VM_PHYS_SIZE; 245 246 #ifdef DDB 247 /* start and end of kernel symbol table */ 248 void *ksym_start, *ksym_end; 249 #endif 250 251 /* for cpu_sysctl() */ 252 int alpha_unaligned_print = 1; /* warn about unaligned accesses */ 253 int alpha_unaligned_fix = 1; /* fix up unaligned accesses */ 254 int alpha_unaligned_sigbus = 0; /* don't SIGBUS on fixed-up accesses */ 255 256 /* 257 * XXX This should be dynamically sized, but we have the chicken-egg problem! 258 * XXX it should also be larger than it is, because not all of the mddt 259 * XXX clusters end up being used for VM. 260 */ 261 phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX]; /* low size bits overloaded */ 262 int mem_cluster_cnt; 263 264 caddr_t allocsys __P((caddr_t)); 265 int cpu_dump __P((void)); 266 int cpu_dumpsize __P((void)); 267 u_long cpu_dump_mempagecnt __P((void)); 268 void dumpsys __P((void)); 269 void identifycpu __P((void)); 270 void netintr __P((void)); 271 void printregs __P((struct reg *)); 272 273 void 274 alpha_init(pfn, ptb, bim, bip, biv) 275 u_long pfn; /* first free PFN number */ 276 u_long ptb; /* PFN of current level 1 page table */ 277 u_long bim; /* bootinfo magic */ 278 u_long bip; /* bootinfo pointer */ 279 u_long biv; /* bootinfo version */ 280 { 281 extern char kernel_text[], _end[]; 282 struct mddt *mddtp; 283 struct mddt_cluster *memc; 284 int i, mddtweird; 285 struct vm_physseg *vps; 286 vm_offset_t kernstart, kernend; 287 vm_offset_t kernstartpfn, kernendpfn, pfn0, pfn1; 288 vm_size_t size; 289 char *p; 290 caddr_t v; 291 char *bootinfo_msg; 292 293 /* NO OUTPUT ALLOWED UNTIL FURTHER NOTICE */ 294 295 /* 296 * Turn off interrupts (not mchecks) and floating point. 297 * Make sure the instruction and data streams are consistent. 298 */ 299 (void)alpha_pal_swpipl(ALPHA_PSL_IPL_HIGH); 300 alpha_pal_wrfen(0); 301 ALPHA_TBIA(); 302 alpha_pal_imb(); 303 304 /* 305 * Get critical system information (if possible, from the 306 * information provided by the boot program). 307 */ 308 bootinfo_msg = NULL; 309 if (bim == BOOTINFO_MAGIC) { 310 if (biv == 0) { /* backward compat */ 311 biv = *(u_long *)bip; 312 bip += 8; 313 } 314 switch (biv) { 315 case 1: { 316 struct bootinfo_v1 *v1p = (struct bootinfo_v1 *)bip; 317 318 bootinfo.ssym = v1p->ssym; 319 bootinfo.esym = v1p->esym; 320 /* hwrpb may not be provided by boot block in v1 */ 321 if (v1p->hwrpb != NULL) { 322 bootinfo.hwrpb_phys = 323 ((struct rpb *)v1p->hwrpb)->rpb_phys; 324 bootinfo.hwrpb_size = v1p->hwrpbsize; 325 } else { 326 bootinfo.hwrpb_phys = 327 ((struct rpb *)HWRPB_ADDR)->rpb_phys; 328 bootinfo.hwrpb_size = 329 ((struct rpb *)HWRPB_ADDR)->rpb_size; 330 } 331 bcopy(v1p->boot_flags, bootinfo.boot_flags, 332 min(sizeof v1p->boot_flags, 333 sizeof bootinfo.boot_flags)); 334 bcopy(v1p->booted_kernel, bootinfo.booted_kernel, 335 min(sizeof v1p->booted_kernel, 336 sizeof bootinfo.booted_kernel)); 337 /* booted dev not provided in bootinfo */ 338 init_prom_interface((struct rpb *) 339 ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys)); 340 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 341 sizeof bootinfo.booted_dev); 342 break; 343 } 344 default: 345 bootinfo_msg = "unknown bootinfo version"; 346 goto nobootinfo; 347 } 348 } else { 349 bootinfo_msg = "boot program did not pass bootinfo"; 350 nobootinfo: 351 bootinfo.ssym = (u_long)_end; 352 bootinfo.esym = (u_long)_end; 353 bootinfo.hwrpb_phys = ((struct rpb *)HWRPB_ADDR)->rpb_phys; 354 bootinfo.hwrpb_size = ((struct rpb *)HWRPB_ADDR)->rpb_size; 355 init_prom_interface((struct rpb *)HWRPB_ADDR); 356 prom_getenv(PROM_E_BOOTED_OSFLAGS, bootinfo.boot_flags, 357 sizeof bootinfo.boot_flags); 358 prom_getenv(PROM_E_BOOTED_FILE, bootinfo.booted_kernel, 359 sizeof bootinfo.booted_kernel); 360 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 361 sizeof bootinfo.booted_dev); 362 } 363 364 /* 365 * Initialize the kernel's mapping of the RPB. It's needed for 366 * lots of things. 367 */ 368 hwrpb = (struct rpb *)ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys); 369 370 #if defined(DEC_3000_300) || defined(DEC_3000_500) 371 if (hwrpb->rpb_type == ST_DEC_3000_300 || 372 hwrpb->rpb_type == ST_DEC_3000_500) { 373 prom_getenv(PROM_E_SCSIID, dec_3000_scsiid, 374 sizeof(dec_3000_scsiid)); 375 prom_getenv(PROM_E_SCSIFAST, dec_3000_scsifast, 376 sizeof(dec_3000_scsifast)); 377 } 378 #endif 379 380 /* 381 * Remember how many cycles there are per microsecond, 382 * so that we can use delay(). Round up, for safety. 383 */ 384 cycles_per_usec = (hwrpb->rpb_cc_freq + 999999) / 1000000; 385 386 /* 387 * Initalize the (temporary) bootstrap console interface, so 388 * we can use printf until the VM system starts being setup. 389 * The real console is initialized before then. 390 */ 391 init_bootstrap_console(); 392 393 /* OUTPUT NOW ALLOWED */ 394 395 /* delayed from above */ 396 if (bootinfo_msg) 397 printf("WARNING: %s (0x%lx, 0x%lx, 0x%lx)\n", 398 bootinfo_msg, bim, bip, biv); 399 400 /* 401 * Point interrupt/exception vectors to our own. 402 */ 403 alpha_pal_wrent(XentInt, ALPHA_KENTRY_INT); 404 alpha_pal_wrent(XentArith, ALPHA_KENTRY_ARITH); 405 alpha_pal_wrent(XentMM, ALPHA_KENTRY_MM); 406 alpha_pal_wrent(XentIF, ALPHA_KENTRY_IF); 407 alpha_pal_wrent(XentUna, ALPHA_KENTRY_UNA); 408 alpha_pal_wrent(XentSys, ALPHA_KENTRY_SYS); 409 410 /* 411 * Clear pending machine checks and error reports, and enable 412 * system- and processor-correctable error reporting. 413 */ 414 alpha_pal_wrmces(alpha_pal_rdmces() & 415 ~(ALPHA_MCES_DSC|ALPHA_MCES_DPC)); 416 417 /* 418 * Find out what hardware we're on, and do basic initialization. 419 */ 420 cputype = hwrpb->rpb_type; 421 if (cputype >= ncpuinit) { 422 platform_not_supported(); 423 /* NOTREACHED */ 424 } 425 (*cpuinit[cputype].init)(); 426 strcpy(cpu_model, platform.model); 427 428 /* 429 * Initalize the real console, so the the bootstrap console is 430 * no longer necessary. 431 */ 432 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 433 if (!pmap_uses_prom_console()) 434 #endif 435 (*platform.cons_init)(); 436 437 #ifdef DIAGNOSTIC 438 /* Paranoid sanity checking */ 439 440 /* We should always be running on the the primary. */ 441 assert(hwrpb->rpb_primary_cpu_id == alpha_pal_whami()); 442 443 /* 444 * On single-CPU systypes, the primary should always be CPU 0, 445 * except on Alpha 8200 systems where the CPU id is related 446 * to the VID, which is related to the Turbo Laser node id. 447 */ 448 if (cputype != ST_DEC_21000) 449 assert(hwrpb->rpb_primary_cpu_id == 0); 450 #endif 451 452 /* NO MORE FIRMWARE ACCESS ALLOWED */ 453 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 454 /* 455 * XXX (unless _PMAP_MAY_USE_PROM_CONSOLE is defined and 456 * XXX pmap_uses_prom_console() evaluates to non-zero.) 457 */ 458 #endif 459 460 /* 461 * find out this system's page size 462 */ 463 PAGE_SIZE = hwrpb->rpb_page_size; 464 if (PAGE_SIZE != 8192) 465 panic("page size %d != 8192?!", PAGE_SIZE); 466 467 /* 468 * Initialize PAGE_SIZE-dependent variables. 469 */ 470 #if defined(UVM) 471 uvm_setpagesize(); 472 #else 473 vm_set_page_size(); 474 #endif 475 476 /* 477 * Find the beginning and end of the kernel (and leave a 478 * bit of space before the beginning for the bootstrap 479 * stack). 480 */ 481 kernstart = trunc_page(kernel_text) - 2 * PAGE_SIZE; 482 #ifdef DDB 483 ksym_start = (void *)bootinfo.ssym; 484 ksym_end = (void *)bootinfo.esym; 485 kernend = (vm_offset_t)round_page(ksym_end); 486 #else 487 kernend = (vm_offset_t)round_page(_end); 488 #endif 489 490 kernstartpfn = atop(ALPHA_K0SEG_TO_PHYS(kernstart)); 491 kernendpfn = atop(ALPHA_K0SEG_TO_PHYS(kernend)); 492 493 /* 494 * Find out how much memory is available, by looking at 495 * the memory cluster descriptors. This also tries to do 496 * its best to detect things things that have never been seen 497 * before... 498 */ 499 mddtp = (struct mddt *)(((caddr_t)hwrpb) + hwrpb->rpb_memdat_off); 500 501 /* MDDT SANITY CHECKING */ 502 mddtweird = 0; 503 if (mddtp->mddt_cluster_cnt < 2) { 504 mddtweird = 1; 505 printf("WARNING: weird number of mem clusters: %d\n", 506 mddtp->mddt_cluster_cnt); 507 } 508 509 #if 0 510 printf("Memory cluster count: %d\n", mddtp->mddt_cluster_cnt); 511 #endif 512 513 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 514 memc = &mddtp->mddt_clusters[i]; 515 #if 0 516 printf("MEMC %d: pfn 0x%lx cnt 0x%lx usage 0x%lx\n", i, 517 memc->mddt_pfn, memc->mddt_pg_cnt, memc->mddt_usage); 518 #endif 519 totalphysmem += memc->mddt_pg_cnt; 520 if (mem_cluster_cnt < VM_PHYSSEG_MAX) { /* XXX */ 521 mem_clusters[mem_cluster_cnt].start = 522 ptoa(memc->mddt_pfn); 523 mem_clusters[mem_cluster_cnt].size = 524 ptoa(memc->mddt_pg_cnt); 525 if (memc->mddt_usage & MDDT_mbz || 526 memc->mddt_usage & MDDT_NONVOLATILE || /* XXX */ 527 memc->mddt_usage & MDDT_PALCODE) 528 mem_clusters[mem_cluster_cnt].size |= 529 PROT_READ; 530 else 531 mem_clusters[mem_cluster_cnt].size |= 532 PROT_READ | PROT_WRITE | PROT_EXEC; 533 mem_cluster_cnt++; 534 } 535 536 if (memc->mddt_usage & MDDT_mbz) { 537 mddtweird = 1; 538 printf("WARNING: mem cluster %d has weird " 539 "usage 0x%lx\n", i, memc->mddt_usage); 540 unknownmem += memc->mddt_pg_cnt; 541 continue; 542 } 543 if (memc->mddt_usage & MDDT_NONVOLATILE) { 544 /* XXX should handle these... */ 545 printf("WARNING: skipping non-volatile mem " 546 "cluster %d\n", i); 547 unusedmem += memc->mddt_pg_cnt; 548 continue; 549 } 550 if (memc->mddt_usage & MDDT_PALCODE) { 551 resvmem += memc->mddt_pg_cnt; 552 continue; 553 } 554 555 /* 556 * We have a memory cluster available for system 557 * software use. We must determine if this cluster 558 * holds the kernel. 559 */ 560 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 561 /* 562 * XXX If the kernel uses the PROM console, we only use the 563 * XXX memory after the kernel in the first system segment, 564 * XXX to avoid clobbering prom mapping, data, etc. 565 */ 566 if (!pmap_uses_prom_console() || physmem == 0) { 567 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 568 physmem += memc->mddt_pg_cnt; 569 pfn0 = memc->mddt_pfn; 570 pfn1 = memc->mddt_pfn + memc->mddt_pg_cnt; 571 if (pfn0 <= kernstartpfn && kernendpfn <= pfn1) { 572 /* 573 * Must compute the location of the kernel 574 * within the segment. 575 */ 576 #if 0 577 printf("Cluster %d contains kernel\n", i); 578 #endif 579 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 580 if (!pmap_uses_prom_console()) { 581 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 582 if (pfn0 < kernstartpfn) { 583 /* 584 * There is a chunk before the kernel. 585 */ 586 #if 0 587 printf("Loading chunk before kernel: " 588 "0x%lx / 0x%lx\n", pfn0, kernstartpfn); 589 #endif 590 #if defined(UVM) 591 uvm_page_physload(pfn0, kernstartpfn, 592 pfn0, kernstartpfn); 593 #else 594 vm_page_physload(pfn0, kernstartpfn, 595 pfn0, kernstartpfn); 596 #endif 597 } 598 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 599 } 600 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 601 if (kernendpfn < pfn1) { 602 /* 603 * There is a chunk after the kernel. 604 */ 605 #if 0 606 printf("Loading chunk after kernel: " 607 "0x%lx / 0x%lx\n", kernendpfn, pfn1); 608 #endif 609 #if defined(UVM) 610 uvm_page_physload(kernendpfn, pfn1, 611 kernendpfn, pfn1); 612 #else 613 vm_page_physload(kernendpfn, pfn1, 614 kernendpfn, pfn1); 615 #endif 616 } 617 } else { 618 /* 619 * Just load this cluster as one chunk. 620 */ 621 #if 0 622 printf("Loading cluster %d: 0x%lx / 0x%lx\n", i, 623 pfn0, pfn1); 624 #endif 625 #if defined(UVM) 626 uvm_page_physload(pfn0, pfn1, pfn0, pfn1); 627 #else 628 vm_page_physload(pfn0, pfn1, pfn0, pfn1); 629 #endif 630 } 631 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 632 } 633 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 634 } 635 636 /* 637 * Dump out the MDDT if it looks odd... 638 */ 639 if (mddtweird) { 640 printf("\n"); 641 printf("complete memory cluster information:\n"); 642 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 643 printf("mddt %d:\n", i); 644 printf("\tpfn %lx\n", 645 mddtp->mddt_clusters[i].mddt_pfn); 646 printf("\tcnt %lx\n", 647 mddtp->mddt_clusters[i].mddt_pg_cnt); 648 printf("\ttest %lx\n", 649 mddtp->mddt_clusters[i].mddt_pg_test); 650 printf("\tbva %lx\n", 651 mddtp->mddt_clusters[i].mddt_v_bitaddr); 652 printf("\tbpa %lx\n", 653 mddtp->mddt_clusters[i].mddt_p_bitaddr); 654 printf("\tbcksum %lx\n", 655 mddtp->mddt_clusters[i].mddt_bit_cksum); 656 printf("\tusage %lx\n", 657 mddtp->mddt_clusters[i].mddt_usage); 658 } 659 printf("\n"); 660 } 661 662 if (totalphysmem == 0) 663 panic("can't happen: system seems to have no memory!"); 664 665 #ifdef LIMITMEM 666 /* 667 * XXX Kludge so we can run on machines with memory larger 668 * XXX than 1G until all device drivers are converted to 669 * XXX use bus_dma. (Relies on the fact that vm_physmem 670 * XXX sorted in order of increasing addresses.) 671 */ 672 if (vm_physmem[vm_nphysseg - 1].end > atop(LIMITMEM * 1024 * 1024)) { 673 674 printf("******** LIMITING MEMORY TO %dMB **********\n", 675 LIMITMEM); 676 677 do { 678 u_long ovf; 679 680 vps = &vm_physmem[vm_nphysseg - 1]; 681 682 if (vps->start >= atop(LIMITMEM * 1024 * 1024)) { 683 /* 684 * If the start is too high, just drop 685 * the whole segment. 686 * 687 * XXX can start != avail_start in this 688 * XXX case? wouldn't that mean that 689 * XXX some memory was stolen above the 690 * XXX limit? What to do? 691 */ 692 ovf = vps->end - vps->start; 693 vm_nphysseg--; 694 } else { 695 /* 696 * If the start is OK, calculate how much 697 * to drop and drop it. 698 */ 699 ovf = vps->end - atop(LIMITMEM * 1024 * 1024); 700 vps->end -= ovf; 701 vps->avail_end -= ovf; 702 } 703 physmem -= ovf; 704 unusedmem += ovf; 705 } while (vps->end > atop(LIMITMEM * 1024 * 1024)); 706 } 707 #endif /* LIMITMEM */ 708 709 maxmem = physmem; 710 711 #if 0 712 printf("totalphysmem = %d\n", totalphysmem); 713 printf("physmem = %d\n", physmem); 714 printf("resvmem = %d\n", resvmem); 715 printf("unusedmem = %d\n", unusedmem); 716 printf("unknownmem = %d\n", unknownmem); 717 #endif 718 719 /* 720 * Adjust some parameters if the amount of physmem 721 * available would cause us to croak. This is completely 722 * eyeballed and isn't meant to be the final answer. 723 * vm_phys_size is probably the only one to really worry 724 * about. 725 * 726 * It's for booting a GENERIC kernel on a large memory platform. 727 */ 728 if (physmem >= atop(128 * 1024 * 1024)) { 729 vm_mbuf_size <<= 1; 730 vm_kmem_size <<= 3; 731 vm_phys_size <<= 2; 732 } 733 734 /* 735 * Initialize error message buffer (at end of core). 736 */ 737 { 738 size_t sz = round_page(MSGBUFSIZE); 739 740 vps = &vm_physmem[vm_nphysseg - 1]; 741 742 /* shrink so that it'll fit in the last segment */ 743 if ((vps->avail_end - vps->avail_start) < atop(sz)) 744 sz = ptoa(vps->avail_end - vps->avail_start); 745 746 vps->end -= atop(sz); 747 vps->avail_end -= atop(sz); 748 msgbufaddr = (caddr_t) ALPHA_PHYS_TO_K0SEG(ptoa(vps->end)); 749 initmsgbuf(msgbufaddr, sz); 750 751 /* Remove the last segment if it now has no pages. */ 752 if (vps->start == vps->end) 753 vm_nphysseg--; 754 755 /* warn if the message buffer had to be shrunk */ 756 if (sz != round_page(MSGBUFSIZE)) 757 printf("WARNING: %d bytes not available for msgbuf in last cluster (%d used)\n", 758 round_page(MSGBUFSIZE), sz); 759 760 } 761 762 /* 763 * Init mapping for u page(s) for proc 0 764 */ 765 proc0.p_addr = proc0paddr = 766 (struct user *)pmap_steal_memory(UPAGES * PAGE_SIZE, NULL, NULL); 767 768 /* 769 * Allocate space for system data structures. These data structures 770 * are allocated here instead of cpu_startup() because physical 771 * memory is directly addressable. We don't have to map these into 772 * virtual address space. 773 */ 774 size = (vm_size_t)allocsys(0); 775 v = (caddr_t)pmap_steal_memory(size, NULL, NULL); 776 if ((allocsys(v) - v) != size) 777 panic("alpha_init: table size inconsistency"); 778 779 /* 780 * Initialize the virtual memory system, and set the 781 * page table base register in proc 0's PCB. 782 */ 783 pmap_bootstrap(ALPHA_PHYS_TO_K0SEG(ptb << PGSHIFT), 784 hwrpb->rpb_max_asn); 785 786 /* 787 * Initialize the rest of proc 0's PCB, and cache its physical 788 * address. 789 */ 790 proc0.p_md.md_pcbpaddr = 791 (struct pcb *)ALPHA_K0SEG_TO_PHYS((vm_offset_t)&proc0paddr->u_pcb); 792 793 /* 794 * Set the kernel sp, reserving space for an (empty) trapframe, 795 * and make proc0's trapframe pointer point to it for sanity. 796 */ 797 proc0paddr->u_pcb.pcb_hw.apcb_ksp = 798 (u_int64_t)proc0paddr + USPACE - sizeof(struct trapframe); 799 proc0.p_md.md_tf = 800 (struct trapframe *)proc0paddr->u_pcb.pcb_hw.apcb_ksp; 801 802 /* 803 * Look at arguments passed to us and compute boothowto. 804 */ 805 806 boothowto = RB_SINGLE; 807 #ifdef KADB 808 boothowto |= RB_KDB; 809 #endif 810 for (p = bootinfo.boot_flags; p && *p != '\0'; p++) { 811 /* 812 * Note that we'd really like to differentiate case here, 813 * but the Alpha AXP Architecture Reference Manual 814 * says that we shouldn't. 815 */ 816 switch (*p) { 817 case 'a': /* autoboot */ 818 case 'A': 819 boothowto &= ~RB_SINGLE; 820 break; 821 822 #ifdef DEBUG 823 case 'c': /* crash dump immediately after autoconfig */ 824 case 'C': 825 boothowto |= RB_DUMP; 826 break; 827 #endif 828 829 #if defined(KGDB) || defined(DDB) 830 case 'd': /* break into the kernel debugger ASAP */ 831 case 'D': 832 boothowto |= RB_KDB; 833 break; 834 #endif 835 836 case 'h': /* always halt, never reboot */ 837 case 'H': 838 boothowto |= RB_HALT; 839 break; 840 841 #if 0 842 case 'm': /* mini root present in memory */ 843 case 'M': 844 boothowto |= RB_MINIROOT; 845 break; 846 #endif 847 848 case 'n': /* askname */ 849 case 'N': 850 boothowto |= RB_ASKNAME; 851 break; 852 853 case 's': /* single-user (default, supported for sanity) */ 854 case 'S': 855 boothowto |= RB_SINGLE; 856 break; 857 858 case '-': 859 /* 860 * Just ignore this. It's not required, but it's 861 * common for it to be passed regardless. 862 */ 863 break; 864 865 default: 866 printf("Unrecognized boot flag '%c'.\n", *p); 867 break; 868 } 869 } 870 871 /* 872 * Initialize debuggers, and break into them if appropriate. 873 */ 874 #ifdef DDB 875 db_machine_init(); 876 ddb_init(ksym_start, ksym_end); 877 if (boothowto & RB_KDB) 878 Debugger(); 879 #endif 880 #ifdef KGDB 881 if (boothowto & RB_KDB) 882 kgdb_connect(0); 883 #endif 884 885 /* 886 * Figure out the number of cpus in the box, from RPB fields. 887 * Really. We mean it. 888 */ 889 for (i = 0; i < hwrpb->rpb_pcs_cnt; i++) { 890 struct pcs *pcsp; 891 892 pcsp = LOCATE_PCS(hwrpb, i); 893 if ((pcsp->pcs_flags & PCS_PP) != 0) 894 ncpus++; 895 } 896 897 /* 898 * Figure out our clock frequency, from RPB fields. 899 */ 900 hz = hwrpb->rpb_intr_freq >> 12; 901 if (!(60 <= hz && hz <= 10240)) { 902 hz = 1024; 903 #ifdef DIAGNOSTIC 904 printf("WARNING: unbelievable rpb_intr_freq: %ld (%d hz)\n", 905 hwrpb->rpb_intr_freq, hz); 906 #endif 907 } 908 909 } 910 911 /* 912 * Allocate space for system data structures. We are given 913 * a starting virtual address and we return a final virtual 914 * address; along the way we set each data structure pointer. 915 * 916 * We call allocsys() with 0 to find out how much space we want, 917 * allocate that much and fill it with zeroes, and the call 918 * allocsys() again with the correct base virtual address. 919 */ 920 caddr_t 921 allocsys(v) 922 caddr_t v; 923 { 924 925 #define valloc(name, type, num) \ 926 (name) = (type *)v; v = (caddr_t)ALIGN((name)+(num)) 927 #ifdef REAL_CLISTS 928 valloc(cfree, struct cblock, nclist); 929 #endif 930 valloc(callout, struct callout, ncallout); 931 #ifdef SYSVSHM 932 valloc(shmsegs, struct shmid_ds, shminfo.shmmni); 933 #endif 934 #ifdef SYSVSEM 935 valloc(sema, struct semid_ds, seminfo.semmni); 936 valloc(sem, struct sem, seminfo.semmns); 937 /* This is pretty disgusting! */ 938 valloc(semu, int, (seminfo.semmnu * seminfo.semusz) / sizeof(int)); 939 #endif 940 #ifdef SYSVMSG 941 valloc(msgpool, char, msginfo.msgmax); 942 valloc(msgmaps, struct msgmap, msginfo.msgseg); 943 valloc(msghdrs, struct msg, msginfo.msgtql); 944 valloc(msqids, struct msqid_ds, msginfo.msgmni); 945 #endif 946 947 /* 948 * Determine how many buffers to allocate. 949 * We allocate 10% of memory for buffer space. Insure a 950 * minimum of 16 buffers. We allocate 1/2 as many swap buffer 951 * headers as file i/o buffers. 952 */ 953 if (bufpages == 0) 954 bufpages = (physmem * 10) / (CLSIZE * 100); 955 if (nbuf == 0) { 956 nbuf = bufpages; 957 if (nbuf < 16) 958 nbuf = 16; 959 } 960 if (nswbuf == 0) { 961 nswbuf = (nbuf / 2) &~ 1; /* force even */ 962 if (nswbuf > 256) 963 nswbuf = 256; /* sanity */ 964 } 965 #if !defined(UVM) 966 valloc(swbuf, struct buf, nswbuf); 967 #endif 968 valloc(buf, struct buf, nbuf); 969 return (v); 970 #undef valloc 971 } 972 973 void 974 consinit() 975 { 976 977 /* 978 * Everything related to console initialization is done 979 * in alpha_init(). 980 */ 981 #if defined(DIAGNOSTIC) && defined(_PMAP_MAY_USE_PROM_CONSOLE) 982 printf("consinit: %susing prom console\n", 983 pmap_uses_prom_console() ? "" : "not "); 984 #endif 985 } 986 987 #include "pckbc.h" 988 #include "pckbd.h" 989 #if (NPCKBC > 0) && (NPCKBD == 0) 990 991 #include <machine/bus.h> 992 #include <dev/isa/pckbcvar.h> 993 994 /* 995 * This is called by the pbkbc driver if no pckbd is configured. 996 * On the i386, it is used to glue in the old, deprecated console 997 * code. On the Alpha, it does nothing. 998 */ 999 int 1000 pckbc_machdep_cnattach(kbctag, kbcslot) 1001 pckbc_tag_t kbctag; 1002 pckbc_slot_t kbcslot; 1003 { 1004 1005 return (ENXIO); 1006 } 1007 #endif /* NPCKBC > 0 && NPCKBD == 0 */ 1008 1009 void 1010 cpu_startup() 1011 { 1012 register unsigned i; 1013 int base, residual; 1014 vm_offset_t minaddr, maxaddr; 1015 vm_size_t size; 1016 #if defined(DEBUG) 1017 extern int pmapdebug; 1018 int opmapdebug = pmapdebug; 1019 1020 pmapdebug = 0; 1021 #endif 1022 1023 /* 1024 * Good {morning,afternoon,evening,night}. 1025 */ 1026 printf(version); 1027 identifycpu(); 1028 printf("real mem = %lu (%lu reserved for PROM, %lu used by NetBSD)\n", 1029 ptoa(totalphysmem), ptoa(resvmem), ptoa(physmem)); 1030 if (unusedmem) 1031 printf("WARNING: unused memory = %d bytes\n", ctob(unusedmem)); 1032 if (unknownmem) 1033 printf("WARNING: %d bytes of memory with unknown purpose\n", 1034 ctob(unknownmem)); 1035 1036 /* 1037 * Allocate virtual address space for file I/O buffers. 1038 * Note they are different than the array of headers, 'buf', 1039 * and usually occupy more virtual memory than physical. 1040 */ 1041 size = MAXBSIZE * nbuf; 1042 #if defined(UVM) 1043 if (uvm_map(kernel_map, (vm_offset_t *) &buffers, round_page(size), 1044 NULL, UVM_UNKNOWN_OFFSET, 1045 UVM_MAPFLAG(UVM_PROT_NONE, UVM_PROT_NONE, UVM_INH_NONE, 1046 UVM_ADV_NORMAL, 0)) != KERN_SUCCESS) 1047 panic("startup: cannot allocate VM for buffers"); 1048 #else 1049 buffer_map = kmem_suballoc(kernel_map, (vm_offset_t *)&buffers, 1050 &maxaddr, size, TRUE); 1051 minaddr = (vm_offset_t)buffers; 1052 if (vm_map_find(buffer_map, vm_object_allocate(size), (vm_offset_t)0, 1053 &minaddr, size, FALSE) != KERN_SUCCESS) 1054 panic("startup: cannot allocate buffers"); 1055 #endif /* UVM */ 1056 base = bufpages / nbuf; 1057 residual = bufpages % nbuf; 1058 for (i = 0; i < nbuf; i++) { 1059 #if defined(UVM) 1060 vm_size_t curbufsize; 1061 vm_offset_t curbuf; 1062 struct vm_page *pg; 1063 1064 /* 1065 * Each buffer has MAXBSIZE bytes of VM space allocated. Of 1066 * that MAXBSIZE space, we allocate and map (base+1) pages 1067 * for the first "residual" buffers, and then we allocate 1068 * "base" pages for the rest. 1069 */ 1070 curbuf = (vm_offset_t) buffers + (i * MAXBSIZE); 1071 curbufsize = CLBYTES * ((i < residual) ? (base+1) : base); 1072 1073 while (curbufsize) { 1074 pg = uvm_pagealloc(NULL, 0, NULL); 1075 if (pg == NULL) 1076 panic("cpu_startup: not enough memory for " 1077 "buffer cache"); 1078 #if defined(PMAP_NEW) 1079 pmap_kenter_pgs(curbuf, &pg, 1); 1080 #else 1081 pmap_enter(kernel_map->pmap, curbuf, 1082 VM_PAGE_TO_PHYS(pg), VM_PROT_ALL, TRUE); 1083 #endif 1084 curbuf += PAGE_SIZE; 1085 curbufsize -= PAGE_SIZE; 1086 } 1087 #else /* ! UVM */ 1088 vm_size_t curbufsize; 1089 vm_offset_t curbuf; 1090 1091 /* 1092 * First <residual> buffers get (base+1) physical pages 1093 * allocated for them. The rest get (base) physical pages. 1094 * 1095 * The rest of each buffer occupies virtual space, 1096 * but has no physical memory allocated for it. 1097 */ 1098 curbuf = (vm_offset_t)buffers + i * MAXBSIZE; 1099 curbufsize = CLBYTES * (i < residual ? base+1 : base); 1100 vm_map_pageable(buffer_map, curbuf, curbuf+curbufsize, FALSE); 1101 vm_map_simplify(buffer_map, curbuf); 1102 #endif /* UVM */ 1103 } 1104 /* 1105 * Allocate a submap for exec arguments. This map effectively 1106 * limits the number of processes exec'ing at any time. 1107 */ 1108 #if defined(UVM) 1109 exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 1110 16 * NCARGS, TRUE, FALSE, NULL); 1111 #else 1112 exec_map = kmem_suballoc(kernel_map, &minaddr, &maxaddr, 1113 16 * NCARGS, TRUE); 1114 #endif 1115 1116 /* 1117 * Allocate a submap for physio 1118 */ 1119 #if defined(UVM) 1120 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 1121 VM_PHYS_SIZE, TRUE, FALSE, NULL); 1122 #else 1123 phys_map = kmem_suballoc(kernel_map, &minaddr, &maxaddr, 1124 VM_PHYS_SIZE, TRUE); 1125 #endif 1126 1127 /* 1128 * Finally, allocate mbuf cluster submap. 1129 */ 1130 #if defined(UVM) 1131 mb_map = uvm_km_suballoc(kernel_map, (vm_offset_t *)&mbutl, &maxaddr, 1132 VM_MBUF_SIZE, FALSE, FALSE, NULL); 1133 #else 1134 mb_map = kmem_suballoc(kernel_map, (vm_offset_t *)&mbutl, &maxaddr, 1135 VM_MBUF_SIZE, FALSE); 1136 #endif 1137 /* 1138 * Initialize callouts 1139 */ 1140 callfree = callout; 1141 for (i = 1; i < ncallout; i++) 1142 callout[i-1].c_next = &callout[i]; 1143 callout[i-1].c_next = NULL; 1144 1145 #if defined(DEBUG) 1146 pmapdebug = opmapdebug; 1147 #endif 1148 #if defined(UVM) 1149 printf("avail mem = %ld\n", (long)ptoa(uvmexp.free)); 1150 #else 1151 printf("avail mem = %ld\n", (long)ptoa(cnt.v_free_count)); 1152 #endif 1153 printf("using %ld buffers containing %ld bytes of memory\n", 1154 (long)nbuf, (long)(bufpages * CLBYTES)); 1155 1156 /* 1157 * Set up buffers, so they can be used to read disk labels. 1158 */ 1159 bufinit(); 1160 1161 /* 1162 * Configure the system. 1163 */ 1164 configure(); 1165 1166 /* 1167 * Note that bootstrapping is finished, and set the HWRPB up 1168 * to do restarts. 1169 */ 1170 hwrpb_restart_setup(); 1171 } 1172 1173 /* 1174 * Retrieve the platform name from the DSR. 1175 */ 1176 const char * 1177 alpha_dsr_sysname() 1178 { 1179 struct dsrdb *dsr; 1180 const char *sysname; 1181 1182 /* 1183 * DSR does not exist on early HWRPB versions. 1184 */ 1185 if (hwrpb->rpb_version < HWRPB_DSRDB_MINVERS) 1186 return (NULL); 1187 1188 dsr = (struct dsrdb *)(((caddr_t)hwrpb) + hwrpb->rpb_dsrdb_off); 1189 sysname = (const char *)((caddr_t)dsr + (dsr->dsr_sysname_off + 1190 sizeof(u_int64_t))); 1191 return (sysname); 1192 } 1193 1194 /* 1195 * Lookup the system specified system variation in the provided table, 1196 * returning the model string on match. 1197 */ 1198 const char * 1199 alpha_variation_name(variation, avtp) 1200 u_int64_t variation; 1201 const struct alpha_variation_table *avtp; 1202 { 1203 int i; 1204 1205 for (i = 0; avtp[i].avt_model != NULL; i++) 1206 if (avtp[i].avt_variation == variation) 1207 return (avtp[i].avt_model); 1208 return (NULL); 1209 } 1210 1211 /* 1212 * Generate a default platform name based for unknown system variations. 1213 */ 1214 const char * 1215 alpha_unknown_sysname() 1216 { 1217 static char s[128]; /* safe size */ 1218 1219 sprintf(s, "%s family, unknown model variation 0x%lx", 1220 platform.family, hwrpb->rpb_variation & SV_ST_MASK); 1221 return ((const char *)s); 1222 } 1223 1224 void 1225 identifycpu() 1226 { 1227 1228 /* 1229 * print out CPU identification information. 1230 */ 1231 printf("%s, %ldMHz\n", cpu_model, 1232 hwrpb->rpb_cc_freq / 1000000); /* XXX true for 21164? */ 1233 printf("%ld byte page size, %d processor%s.\n", 1234 hwrpb->rpb_page_size, ncpus, ncpus == 1 ? "" : "s"); 1235 #if 0 1236 /* this isn't defined for any systems that we run on? */ 1237 printf("serial number 0x%lx 0x%lx\n", 1238 ((long *)hwrpb->rpb_ssn)[0], ((long *)hwrpb->rpb_ssn)[1]); 1239 1240 /* and these aren't particularly useful! */ 1241 printf("variation: 0x%lx, revision 0x%lx\n", 1242 hwrpb->rpb_variation, *(long *)hwrpb->rpb_revision); 1243 #endif 1244 } 1245 1246 int waittime = -1; 1247 struct pcb dumppcb; 1248 1249 void 1250 cpu_reboot(howto, bootstr) 1251 int howto; 1252 char *bootstr; 1253 { 1254 extern int cold; 1255 1256 /* If system is cold, just halt. */ 1257 if (cold) { 1258 howto |= RB_HALT; 1259 goto haltsys; 1260 } 1261 1262 /* If "always halt" was specified as a boot flag, obey. */ 1263 if ((boothowto & RB_HALT) != 0) 1264 howto |= RB_HALT; 1265 1266 boothowto = howto; 1267 if ((howto & RB_NOSYNC) == 0 && waittime < 0) { 1268 waittime = 0; 1269 vfs_shutdown(); 1270 /* 1271 * If we've been adjusting the clock, the todr 1272 * will be out of synch; adjust it now. 1273 */ 1274 resettodr(); 1275 } 1276 1277 /* Disable interrupts. */ 1278 splhigh(); 1279 1280 /* If rebooting and a dump is requested do it. */ 1281 #if 0 1282 if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP) 1283 #else 1284 if (howto & RB_DUMP) 1285 #endif 1286 dumpsys(); 1287 1288 haltsys: 1289 1290 /* run any shutdown hooks */ 1291 doshutdownhooks(); 1292 1293 #ifdef BOOTKEY 1294 printf("hit any key to %s...\n", howto & RB_HALT ? "halt" : "reboot"); 1295 cnpollc(1); /* for proper keyboard command handling */ 1296 cngetc(); 1297 cnpollc(0); 1298 printf("\n"); 1299 #endif 1300 1301 /* Finally, powerdown/halt/reboot the system. */ 1302 if ((howto && RB_POWERDOWN) == RB_POWERDOWN && 1303 platform.powerdown != NULL) { 1304 (*platform.powerdown)(); 1305 printf("WARNING: powerdown failed!\n"); 1306 } 1307 printf("%s\n\n", howto & RB_HALT ? "halted." : "rebooting..."); 1308 prom_halt(howto & RB_HALT); 1309 /*NOTREACHED*/ 1310 } 1311 1312 /* 1313 * These variables are needed by /sbin/savecore 1314 */ 1315 u_long dumpmag = 0x8fca0101; /* magic number */ 1316 int dumpsize = 0; /* pages */ 1317 long dumplo = 0; /* blocks */ 1318 1319 /* 1320 * cpu_dumpsize: calculate size of machine-dependent kernel core dump headers. 1321 */ 1322 int 1323 cpu_dumpsize() 1324 { 1325 int size; 1326 1327 size = ALIGN(sizeof(kcore_seg_t)) + ALIGN(sizeof(cpu_kcore_hdr_t)) + 1328 ALIGN(mem_cluster_cnt * sizeof(phys_ram_seg_t)); 1329 if (roundup(size, dbtob(1)) != dbtob(1)) 1330 return -1; 1331 1332 return (1); 1333 } 1334 1335 /* 1336 * cpu_dump_mempagecnt: calculate size of RAM (in pages) to be dumped. 1337 */ 1338 u_long 1339 cpu_dump_mempagecnt() 1340 { 1341 u_long i, n; 1342 1343 n = 0; 1344 for (i = 0; i < mem_cluster_cnt; i++) 1345 n += atop(mem_clusters[i].size); 1346 return (n); 1347 } 1348 1349 /* 1350 * cpu_dump: dump machine-dependent kernel core dump headers. 1351 */ 1352 int 1353 cpu_dump() 1354 { 1355 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1356 char buf[dbtob(1)]; 1357 kcore_seg_t *segp; 1358 cpu_kcore_hdr_t *cpuhdrp; 1359 phys_ram_seg_t *memsegp; 1360 int i; 1361 1362 dump = bdevsw[major(dumpdev)].d_dump; 1363 1364 bzero(buf, sizeof buf); 1365 segp = (kcore_seg_t *)buf; 1366 cpuhdrp = (cpu_kcore_hdr_t *)&buf[ALIGN(sizeof(*segp))]; 1367 memsegp = (phys_ram_seg_t *)&buf[ ALIGN(sizeof(*segp)) + 1368 ALIGN(sizeof(*cpuhdrp))]; 1369 1370 /* 1371 * Generate a segment header. 1372 */ 1373 CORE_SETMAGIC(*segp, KCORE_MAGIC, MID_MACHINE, CORE_CPU); 1374 segp->c_size = dbtob(1) - ALIGN(sizeof(*segp)); 1375 1376 /* 1377 * Add the machine-dependent header info. 1378 */ 1379 cpuhdrp->lev1map_pa = ALPHA_K0SEG_TO_PHYS((vm_offset_t)kernel_lev1map); 1380 cpuhdrp->page_size = PAGE_SIZE; 1381 cpuhdrp->nmemsegs = mem_cluster_cnt; 1382 1383 /* 1384 * Fill in the memory segment descriptors. 1385 */ 1386 for (i = 0; i < mem_cluster_cnt; i++) { 1387 memsegp[i].start = mem_clusters[i].start; 1388 memsegp[i].size = mem_clusters[i].size & ~PAGE_MASK; 1389 } 1390 1391 return (dump(dumpdev, dumplo, (caddr_t)buf, dbtob(1))); 1392 } 1393 1394 /* 1395 * This is called by main to set dumplo and dumpsize. 1396 * Dumps always skip the first CLBYTES of disk space 1397 * in case there might be a disk label stored there. 1398 * If there is extra space, put dump at the end to 1399 * reduce the chance that swapping trashes it. 1400 */ 1401 void 1402 cpu_dumpconf() 1403 { 1404 int nblks, dumpblks; /* size of dump area */ 1405 int maj; 1406 1407 if (dumpdev == NODEV) 1408 goto bad; 1409 maj = major(dumpdev); 1410 if (maj < 0 || maj >= nblkdev) 1411 panic("dumpconf: bad dumpdev=0x%x", dumpdev); 1412 if (bdevsw[maj].d_psize == NULL) 1413 goto bad; 1414 nblks = (*bdevsw[maj].d_psize)(dumpdev); 1415 if (nblks <= ctod(1)) 1416 goto bad; 1417 1418 dumpblks = cpu_dumpsize(); 1419 if (dumpblks < 0) 1420 goto bad; 1421 dumpblks += ctod(cpu_dump_mempagecnt()); 1422 1423 /* If dump won't fit (incl. room for possible label), punt. */ 1424 if (dumpblks > (nblks - ctod(1))) 1425 goto bad; 1426 1427 /* Put dump at end of partition */ 1428 dumplo = nblks - dumpblks; 1429 1430 /* dumpsize is in page units, and doesn't include headers. */ 1431 dumpsize = cpu_dump_mempagecnt(); 1432 return; 1433 1434 bad: 1435 dumpsize = 0; 1436 return; 1437 } 1438 1439 /* 1440 * Dump the kernel's image to the swap partition. 1441 */ 1442 #define BYTES_PER_DUMP NBPG 1443 1444 void 1445 dumpsys() 1446 { 1447 u_long totalbytesleft, bytes, i, n, memcl; 1448 u_long maddr; 1449 int psize; 1450 daddr_t blkno; 1451 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1452 int error; 1453 1454 /* Save registers. */ 1455 savectx(&dumppcb); 1456 1457 msgbufenabled = 0; /* don't record dump msgs in msgbuf */ 1458 if (dumpdev == NODEV) 1459 return; 1460 1461 /* 1462 * For dumps during autoconfiguration, 1463 * if dump device has already configured... 1464 */ 1465 if (dumpsize == 0) 1466 cpu_dumpconf(); 1467 if (dumplo <= 0) { 1468 printf("\ndump to dev %u,%u not possible\n", major(dumpdev), 1469 minor(dumpdev)); 1470 return; 1471 } 1472 printf("\ndumping to dev %u,%u offset %ld\n", major(dumpdev), 1473 minor(dumpdev), dumplo); 1474 1475 psize = (*bdevsw[major(dumpdev)].d_psize)(dumpdev); 1476 printf("dump "); 1477 if (psize == -1) { 1478 printf("area unavailable\n"); 1479 return; 1480 } 1481 1482 /* XXX should purge all outstanding keystrokes. */ 1483 1484 if ((error = cpu_dump()) != 0) 1485 goto err; 1486 1487 totalbytesleft = ptoa(cpu_dump_mempagecnt()); 1488 blkno = dumplo + cpu_dumpsize(); 1489 dump = bdevsw[major(dumpdev)].d_dump; 1490 error = 0; 1491 1492 for (memcl = 0; memcl < mem_cluster_cnt; memcl++) { 1493 maddr = mem_clusters[memcl].start; 1494 bytes = mem_clusters[memcl].size & ~PAGE_MASK; 1495 1496 for (i = 0; i < bytes; i += n, totalbytesleft -= n) { 1497 1498 /* Print out how many MBs we to go. */ 1499 if ((totalbytesleft % (1024*1024)) == 0) 1500 printf("%d ", totalbytesleft / (1024 * 1024)); 1501 1502 /* Limit size for next transfer. */ 1503 n = bytes - i; 1504 if (n > BYTES_PER_DUMP) 1505 n = BYTES_PER_DUMP; 1506 1507 error = (*dump)(dumpdev, blkno, 1508 (caddr_t)ALPHA_PHYS_TO_K0SEG(maddr), n); 1509 if (error) 1510 goto err; 1511 maddr += n; 1512 blkno += btodb(n); /* XXX? */ 1513 1514 /* XXX should look for keystrokes, to cancel. */ 1515 } 1516 } 1517 1518 err: 1519 switch (error) { 1520 1521 case ENXIO: 1522 printf("device bad\n"); 1523 break; 1524 1525 case EFAULT: 1526 printf("device not ready\n"); 1527 break; 1528 1529 case EINVAL: 1530 printf("area improper\n"); 1531 break; 1532 1533 case EIO: 1534 printf("i/o error\n"); 1535 break; 1536 1537 case EINTR: 1538 printf("aborted from console\n"); 1539 break; 1540 1541 case 0: 1542 printf("succeeded\n"); 1543 break; 1544 1545 default: 1546 printf("error %d\n", error); 1547 break; 1548 } 1549 printf("\n\n"); 1550 delay(1000); 1551 } 1552 1553 void 1554 frametoreg(framep, regp) 1555 struct trapframe *framep; 1556 struct reg *regp; 1557 { 1558 1559 regp->r_regs[R_V0] = framep->tf_regs[FRAME_V0]; 1560 regp->r_regs[R_T0] = framep->tf_regs[FRAME_T0]; 1561 regp->r_regs[R_T1] = framep->tf_regs[FRAME_T1]; 1562 regp->r_regs[R_T2] = framep->tf_regs[FRAME_T2]; 1563 regp->r_regs[R_T3] = framep->tf_regs[FRAME_T3]; 1564 regp->r_regs[R_T4] = framep->tf_regs[FRAME_T4]; 1565 regp->r_regs[R_T5] = framep->tf_regs[FRAME_T5]; 1566 regp->r_regs[R_T6] = framep->tf_regs[FRAME_T6]; 1567 regp->r_regs[R_T7] = framep->tf_regs[FRAME_T7]; 1568 regp->r_regs[R_S0] = framep->tf_regs[FRAME_S0]; 1569 regp->r_regs[R_S1] = framep->tf_regs[FRAME_S1]; 1570 regp->r_regs[R_S2] = framep->tf_regs[FRAME_S2]; 1571 regp->r_regs[R_S3] = framep->tf_regs[FRAME_S3]; 1572 regp->r_regs[R_S4] = framep->tf_regs[FRAME_S4]; 1573 regp->r_regs[R_S5] = framep->tf_regs[FRAME_S5]; 1574 regp->r_regs[R_S6] = framep->tf_regs[FRAME_S6]; 1575 regp->r_regs[R_A0] = framep->tf_regs[FRAME_A0]; 1576 regp->r_regs[R_A1] = framep->tf_regs[FRAME_A1]; 1577 regp->r_regs[R_A2] = framep->tf_regs[FRAME_A2]; 1578 regp->r_regs[R_A3] = framep->tf_regs[FRAME_A3]; 1579 regp->r_regs[R_A4] = framep->tf_regs[FRAME_A4]; 1580 regp->r_regs[R_A5] = framep->tf_regs[FRAME_A5]; 1581 regp->r_regs[R_T8] = framep->tf_regs[FRAME_T8]; 1582 regp->r_regs[R_T9] = framep->tf_regs[FRAME_T9]; 1583 regp->r_regs[R_T10] = framep->tf_regs[FRAME_T10]; 1584 regp->r_regs[R_T11] = framep->tf_regs[FRAME_T11]; 1585 regp->r_regs[R_RA] = framep->tf_regs[FRAME_RA]; 1586 regp->r_regs[R_T12] = framep->tf_regs[FRAME_T12]; 1587 regp->r_regs[R_AT] = framep->tf_regs[FRAME_AT]; 1588 regp->r_regs[R_GP] = framep->tf_regs[FRAME_GP]; 1589 /* regp->r_regs[R_SP] = framep->tf_regs[FRAME_SP]; XXX */ 1590 regp->r_regs[R_ZERO] = 0; 1591 } 1592 1593 void 1594 regtoframe(regp, framep) 1595 struct reg *regp; 1596 struct trapframe *framep; 1597 { 1598 1599 framep->tf_regs[FRAME_V0] = regp->r_regs[R_V0]; 1600 framep->tf_regs[FRAME_T0] = regp->r_regs[R_T0]; 1601 framep->tf_regs[FRAME_T1] = regp->r_regs[R_T1]; 1602 framep->tf_regs[FRAME_T2] = regp->r_regs[R_T2]; 1603 framep->tf_regs[FRAME_T3] = regp->r_regs[R_T3]; 1604 framep->tf_regs[FRAME_T4] = regp->r_regs[R_T4]; 1605 framep->tf_regs[FRAME_T5] = regp->r_regs[R_T5]; 1606 framep->tf_regs[FRAME_T6] = regp->r_regs[R_T6]; 1607 framep->tf_regs[FRAME_T7] = regp->r_regs[R_T7]; 1608 framep->tf_regs[FRAME_S0] = regp->r_regs[R_S0]; 1609 framep->tf_regs[FRAME_S1] = regp->r_regs[R_S1]; 1610 framep->tf_regs[FRAME_S2] = regp->r_regs[R_S2]; 1611 framep->tf_regs[FRAME_S3] = regp->r_regs[R_S3]; 1612 framep->tf_regs[FRAME_S4] = regp->r_regs[R_S4]; 1613 framep->tf_regs[FRAME_S5] = regp->r_regs[R_S5]; 1614 framep->tf_regs[FRAME_S6] = regp->r_regs[R_S6]; 1615 framep->tf_regs[FRAME_A0] = regp->r_regs[R_A0]; 1616 framep->tf_regs[FRAME_A1] = regp->r_regs[R_A1]; 1617 framep->tf_regs[FRAME_A2] = regp->r_regs[R_A2]; 1618 framep->tf_regs[FRAME_A3] = regp->r_regs[R_A3]; 1619 framep->tf_regs[FRAME_A4] = regp->r_regs[R_A4]; 1620 framep->tf_regs[FRAME_A5] = regp->r_regs[R_A5]; 1621 framep->tf_regs[FRAME_T8] = regp->r_regs[R_T8]; 1622 framep->tf_regs[FRAME_T9] = regp->r_regs[R_T9]; 1623 framep->tf_regs[FRAME_T10] = regp->r_regs[R_T10]; 1624 framep->tf_regs[FRAME_T11] = regp->r_regs[R_T11]; 1625 framep->tf_regs[FRAME_RA] = regp->r_regs[R_RA]; 1626 framep->tf_regs[FRAME_T12] = regp->r_regs[R_T12]; 1627 framep->tf_regs[FRAME_AT] = regp->r_regs[R_AT]; 1628 framep->tf_regs[FRAME_GP] = regp->r_regs[R_GP]; 1629 /* framep->tf_regs[FRAME_SP] = regp->r_regs[R_SP]; XXX */ 1630 /* ??? = regp->r_regs[R_ZERO]; */ 1631 } 1632 1633 void 1634 printregs(regp) 1635 struct reg *regp; 1636 { 1637 int i; 1638 1639 for (i = 0; i < 32; i++) 1640 printf("R%d:\t0x%016lx%s", i, regp->r_regs[i], 1641 i & 1 ? "\n" : "\t"); 1642 } 1643 1644 void 1645 regdump(framep) 1646 struct trapframe *framep; 1647 { 1648 struct reg reg; 1649 1650 frametoreg(framep, ®); 1651 reg.r_regs[R_SP] = alpha_pal_rdusp(); 1652 1653 printf("REGISTERS:\n"); 1654 printregs(®); 1655 } 1656 1657 #ifdef DEBUG 1658 int sigdebug = 0; 1659 int sigpid = 0; 1660 #define SDB_FOLLOW 0x01 1661 #define SDB_KSTACK 0x02 1662 #endif 1663 1664 /* 1665 * Send an interrupt to process. 1666 */ 1667 void 1668 sendsig(catcher, sig, mask, code) 1669 sig_t catcher; 1670 int sig, mask; 1671 u_long code; 1672 { 1673 struct proc *p = curproc; 1674 struct sigcontext *scp, ksc; 1675 struct trapframe *frame; 1676 struct sigacts *psp = p->p_sigacts; 1677 int oonstack, fsize, rndfsize; 1678 extern char sigcode[], esigcode[]; 1679 extern struct proc *fpcurproc; 1680 1681 frame = p->p_md.md_tf; 1682 oonstack = psp->ps_sigstk.ss_flags & SS_ONSTACK; 1683 fsize = sizeof ksc; 1684 rndfsize = ((fsize + 15) / 16) * 16; 1685 /* 1686 * Allocate and validate space for the signal handler 1687 * context. Note that if the stack is in P0 space, the 1688 * call to grow() is a nop, and the useracc() check 1689 * will fail if the process has not already allocated 1690 * the space with a `brk'. 1691 */ 1692 if ((psp->ps_flags & SAS_ALTSTACK) && !oonstack && 1693 (psp->ps_sigonstack & sigmask(sig))) { 1694 scp = (struct sigcontext *)((caddr_t)psp->ps_sigstk.ss_sp + 1695 psp->ps_sigstk.ss_size - rndfsize); 1696 psp->ps_sigstk.ss_flags |= SS_ONSTACK; 1697 } else 1698 scp = (struct sigcontext *)(alpha_pal_rdusp() - rndfsize); 1699 if ((u_long)scp <= USRSTACK - ctob(p->p_vmspace->vm_ssize)) 1700 #if defined(UVM) 1701 (void)uvm_grow(p, (u_long)scp); 1702 #else 1703 (void)grow(p, (u_long)scp); 1704 #endif 1705 #ifdef DEBUG 1706 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1707 printf("sendsig(%d): sig %d ssp %p usp %p\n", p->p_pid, 1708 sig, &oonstack, scp); 1709 #endif 1710 #if defined(UVM) 1711 if (uvm_useracc((caddr_t)scp, fsize, B_WRITE) == 0) { 1712 #else 1713 if (useracc((caddr_t)scp, fsize, B_WRITE) == 0) { 1714 #endif 1715 #ifdef DEBUG 1716 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1717 printf("sendsig(%d): useracc failed on sig %d\n", 1718 p->p_pid, sig); 1719 #endif 1720 /* 1721 * Process has trashed its stack; give it an illegal 1722 * instruction to halt it in its tracks. 1723 */ 1724 SIGACTION(p, SIGILL) = SIG_DFL; 1725 sig = sigmask(SIGILL); 1726 p->p_sigignore &= ~sig; 1727 p->p_sigcatch &= ~sig; 1728 p->p_sigmask &= ~sig; 1729 psignal(p, SIGILL); 1730 return; 1731 #if !defined(UVM) /* this construct will balance braces for ctags(1) */ 1732 } 1733 #else 1734 } 1735 #endif 1736 1737 /* 1738 * Build the signal context to be used by sigreturn. 1739 */ 1740 ksc.sc_onstack = oonstack; 1741 ksc.sc_mask = mask; 1742 ksc.sc_pc = frame->tf_regs[FRAME_PC]; 1743 ksc.sc_ps = frame->tf_regs[FRAME_PS]; 1744 1745 /* copy the registers. */ 1746 frametoreg(frame, (struct reg *)ksc.sc_regs); 1747 ksc.sc_regs[R_ZERO] = 0xACEDBADE; /* magic number */ 1748 ksc.sc_regs[R_SP] = alpha_pal_rdusp(); 1749 1750 /* save the floating-point state, if necessary, then copy it. */ 1751 if (p == fpcurproc) { 1752 alpha_pal_wrfen(1); 1753 savefpstate(&p->p_addr->u_pcb.pcb_fp); 1754 alpha_pal_wrfen(0); 1755 fpcurproc = NULL; 1756 } 1757 ksc.sc_ownedfp = p->p_md.md_flags & MDP_FPUSED; 1758 bcopy(&p->p_addr->u_pcb.pcb_fp, (struct fpreg *)ksc.sc_fpregs, 1759 sizeof(struct fpreg)); 1760 ksc.sc_fp_control = 0; /* XXX ? */ 1761 bzero(ksc.sc_reserved, sizeof ksc.sc_reserved); /* XXX */ 1762 bzero(ksc.sc_xxx, sizeof ksc.sc_xxx); /* XXX */ 1763 1764 1765 #ifdef COMPAT_OSF1 1766 /* 1767 * XXX Create an OSF/1-style sigcontext and associated goo. 1768 */ 1769 #endif 1770 1771 /* 1772 * copy the frame out to userland. 1773 */ 1774 (void) copyout((caddr_t)&ksc, (caddr_t)scp, fsize); 1775 #ifdef DEBUG 1776 if (sigdebug & SDB_FOLLOW) 1777 printf("sendsig(%d): sig %d scp %p code %lx\n", p->p_pid, sig, 1778 scp, code); 1779 #endif 1780 1781 /* 1782 * Set up the registers to return to sigcode. 1783 */ 1784 frame->tf_regs[FRAME_PC] = 1785 (u_int64_t)PS_STRINGS - (esigcode - sigcode); 1786 frame->tf_regs[FRAME_A0] = sig; 1787 frame->tf_regs[FRAME_A1] = code; 1788 frame->tf_regs[FRAME_A2] = (u_int64_t)scp; 1789 frame->tf_regs[FRAME_T12] = (u_int64_t)catcher; /* t12 is pv */ 1790 alpha_pal_wrusp((unsigned long)scp); 1791 1792 #ifdef DEBUG 1793 if (sigdebug & SDB_FOLLOW) 1794 printf("sendsig(%d): pc %lx, catcher %lx\n", p->p_pid, 1795 frame->tf_regs[FRAME_PC], frame->tf_regs[FRAME_A3]); 1796 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1797 printf("sendsig(%d): sig %d returns\n", 1798 p->p_pid, sig); 1799 #endif 1800 } 1801 1802 /* 1803 * System call to cleanup state after a signal 1804 * has been taken. Reset signal mask and 1805 * stack state from context left by sendsig (above). 1806 * Return to previous pc and psl as specified by 1807 * context left by sendsig. Check carefully to 1808 * make sure that the user has not modified the 1809 * psl to gain improper priviledges or to cause 1810 * a machine fault. 1811 */ 1812 /* ARGSUSED */ 1813 int 1814 sys_sigreturn(p, v, retval) 1815 struct proc *p; 1816 void *v; 1817 register_t *retval; 1818 { 1819 struct sys_sigreturn_args /* { 1820 syscallarg(struct sigcontext *) sigcntxp; 1821 } */ *uap = v; 1822 struct sigcontext *scp, ksc; 1823 extern struct proc *fpcurproc; 1824 1825 scp = SCARG(uap, sigcntxp); 1826 #ifdef DEBUG 1827 if (sigdebug & SDB_FOLLOW) 1828 printf("sigreturn: pid %d, scp %p\n", p->p_pid, scp); 1829 #endif 1830 1831 if (ALIGN(scp) != (u_int64_t)scp) 1832 return (EINVAL); 1833 1834 /* 1835 * Test and fetch the context structure. 1836 * We grab it all at once for speed. 1837 */ 1838 #if defined(UVM) 1839 if (uvm_useracc((caddr_t)scp, sizeof (*scp), B_WRITE) == 0 || 1840 copyin((caddr_t)scp, (caddr_t)&ksc, sizeof ksc)) 1841 return (EINVAL); 1842 #else 1843 if (useracc((caddr_t)scp, sizeof (*scp), B_WRITE) == 0 || 1844 copyin((caddr_t)scp, (caddr_t)&ksc, sizeof ksc)) 1845 return (EINVAL); 1846 #endif 1847 1848 if (ksc.sc_regs[R_ZERO] != 0xACEDBADE) /* magic number */ 1849 return (EINVAL); 1850 /* 1851 * Restore the user-supplied information 1852 */ 1853 if (ksc.sc_onstack) 1854 p->p_sigacts->ps_sigstk.ss_flags |= SS_ONSTACK; 1855 else 1856 p->p_sigacts->ps_sigstk.ss_flags &= ~SS_ONSTACK; 1857 p->p_sigmask = ksc.sc_mask &~ sigcantmask; 1858 1859 p->p_md.md_tf->tf_regs[FRAME_PC] = ksc.sc_pc; 1860 p->p_md.md_tf->tf_regs[FRAME_PS] = 1861 (ksc.sc_ps | ALPHA_PSL_USERSET) & ~ALPHA_PSL_USERCLR; 1862 1863 regtoframe((struct reg *)ksc.sc_regs, p->p_md.md_tf); 1864 alpha_pal_wrusp(ksc.sc_regs[R_SP]); 1865 1866 /* XXX ksc.sc_ownedfp ? */ 1867 if (p == fpcurproc) 1868 fpcurproc = NULL; 1869 bcopy((struct fpreg *)ksc.sc_fpregs, &p->p_addr->u_pcb.pcb_fp, 1870 sizeof(struct fpreg)); 1871 /* XXX ksc.sc_fp_control ? */ 1872 1873 #ifdef DEBUG 1874 if (sigdebug & SDB_FOLLOW) 1875 printf("sigreturn(%d): returns\n", p->p_pid); 1876 #endif 1877 return (EJUSTRETURN); 1878 } 1879 1880 /* 1881 * machine dependent system variables. 1882 */ 1883 int 1884 cpu_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 1885 int *name; 1886 u_int namelen; 1887 void *oldp; 1888 size_t *oldlenp; 1889 void *newp; 1890 size_t newlen; 1891 struct proc *p; 1892 { 1893 dev_t consdev; 1894 1895 /* all sysctl names at this level are terminal */ 1896 if (namelen != 1) 1897 return (ENOTDIR); /* overloaded */ 1898 1899 switch (name[0]) { 1900 case CPU_CONSDEV: 1901 if (cn_tab != NULL) 1902 consdev = cn_tab->cn_dev; 1903 else 1904 consdev = NODEV; 1905 return (sysctl_rdstruct(oldp, oldlenp, newp, &consdev, 1906 sizeof consdev)); 1907 1908 case CPU_ROOT_DEVICE: 1909 return (sysctl_rdstring(oldp, oldlenp, newp, 1910 root_device->dv_xname)); 1911 1912 case CPU_UNALIGNED_PRINT: 1913 return (sysctl_int(oldp, oldlenp, newp, newlen, 1914 &alpha_unaligned_print)); 1915 1916 case CPU_UNALIGNED_FIX: 1917 return (sysctl_int(oldp, oldlenp, newp, newlen, 1918 &alpha_unaligned_fix)); 1919 1920 case CPU_UNALIGNED_SIGBUS: 1921 return (sysctl_int(oldp, oldlenp, newp, newlen, 1922 &alpha_unaligned_sigbus)); 1923 1924 case CPU_BOOTED_KERNEL: 1925 return (sysctl_rdstring(oldp, oldlenp, newp, 1926 bootinfo.booted_kernel)); 1927 1928 default: 1929 return (EOPNOTSUPP); 1930 } 1931 /* NOTREACHED */ 1932 } 1933 1934 /* 1935 * Set registers on exec. 1936 */ 1937 void 1938 setregs(p, pack, stack) 1939 register struct proc *p; 1940 struct exec_package *pack; 1941 u_long stack; 1942 { 1943 struct trapframe *tfp = p->p_md.md_tf; 1944 extern struct proc *fpcurproc; 1945 #ifdef DEBUG 1946 int i; 1947 #endif 1948 1949 #ifdef DEBUG 1950 /* 1951 * Crash and dump, if the user requested it. 1952 */ 1953 if (boothowto & RB_DUMP) 1954 panic("crash requested by boot flags"); 1955 #endif 1956 1957 #ifdef DEBUG 1958 for (i = 0; i < FRAME_SIZE; i++) 1959 tfp->tf_regs[i] = 0xbabefacedeadbeef; 1960 #else 1961 bzero(tfp->tf_regs, FRAME_SIZE * sizeof tfp->tf_regs[0]); 1962 #endif 1963 bzero(&p->p_addr->u_pcb.pcb_fp, sizeof p->p_addr->u_pcb.pcb_fp); 1964 #define FP_RN 2 /* XXX */ 1965 p->p_addr->u_pcb.pcb_fp.fpr_cr = (long)FP_RN << 58; 1966 alpha_pal_wrusp(stack); 1967 tfp->tf_regs[FRAME_PS] = ALPHA_PSL_USERSET; 1968 tfp->tf_regs[FRAME_PC] = pack->ep_entry & ~3; 1969 1970 tfp->tf_regs[FRAME_A0] = stack; /* a0 = sp */ 1971 tfp->tf_regs[FRAME_A1] = 0; /* a1 = rtld cleanup */ 1972 tfp->tf_regs[FRAME_A2] = 0; /* a2 = rtld object */ 1973 tfp->tf_regs[FRAME_A3] = (u_int64_t)PS_STRINGS; /* a3 = ps_strings */ 1974 tfp->tf_regs[FRAME_T12] = tfp->tf_regs[FRAME_PC]; /* a.k.a. PV */ 1975 1976 p->p_md.md_flags &= ~MDP_FPUSED; 1977 if (fpcurproc == p) 1978 fpcurproc = NULL; 1979 } 1980 1981 void 1982 netintr() 1983 { 1984 int n, s; 1985 1986 s = splhigh(); 1987 n = netisr; 1988 netisr = 0; 1989 splx(s); 1990 1991 #define DONETISR(bit, fn) \ 1992 do { \ 1993 if (n & (1 << (bit))) \ 1994 fn; \ 1995 } while (0) 1996 1997 #ifdef INET 1998 #if NARP > 0 1999 DONETISR(NETISR_ARP, arpintr()); 2000 #endif 2001 DONETISR(NETISR_IP, ipintr()); 2002 #endif 2003 #ifdef NETATALK 2004 DONETISR(NETISR_ATALK, atintr()); 2005 #endif 2006 #ifdef NS 2007 DONETISR(NETISR_NS, nsintr()); 2008 #endif 2009 #ifdef ISO 2010 DONETISR(NETISR_ISO, clnlintr()); 2011 #endif 2012 #ifdef CCITT 2013 DONETISR(NETISR_CCITT, ccittintr()); 2014 #endif 2015 #ifdef NATM 2016 DONETISR(NETISR_NATM, natmintr()); 2017 #endif 2018 #if NPPP > 1 2019 DONETISR(NETISR_PPP, pppintr()); 2020 #endif 2021 2022 #undef DONETISR 2023 } 2024 2025 void 2026 do_sir() 2027 { 2028 u_int64_t n; 2029 2030 do { 2031 (void)splhigh(); 2032 n = ssir; 2033 ssir = 0; 2034 splsoft(); /* don't recurse through spl0() */ 2035 2036 #if defined(UVM) 2037 #define COUNT_SOFT uvmexp.softs++ 2038 #else 2039 #define COUNT_SOFT cnt.v_soft++ 2040 #endif 2041 2042 #define DO_SIR(bit, fn) \ 2043 do { \ 2044 if (n & (bit)) { \ 2045 COUNT_SOFT; \ 2046 fn; \ 2047 } \ 2048 } while (0) 2049 2050 DO_SIR(SIR_NET, netintr()); 2051 DO_SIR(SIR_CLOCK, softclock()); 2052 2053 #undef COUNT_SOFT 2054 #undef DO_SIR 2055 } while (ssir != 0); 2056 } 2057 2058 int 2059 spl0() 2060 { 2061 2062 if (ssir) 2063 do_sir(); /* it lowers the IPL itself */ 2064 2065 return (alpha_pal_swpipl(ALPHA_PSL_IPL_0)); 2066 } 2067 2068 /* 2069 * The following primitives manipulate the run queues. _whichqs tells which 2070 * of the 32 queues _qs have processes in them. Setrunqueue puts processes 2071 * into queues, Remrunqueue removes them from queues. The running process is 2072 * on no queue, other processes are on a queue related to p->p_priority, 2073 * divided by 4 actually to shrink the 0-127 range of priorities into the 32 2074 * available queues. 2075 */ 2076 /* 2077 * setrunqueue(p) 2078 * proc *p; 2079 * 2080 * Call should be made at splclock(), and p->p_stat should be SRUN. 2081 */ 2082 2083 void 2084 setrunqueue(p) 2085 struct proc *p; 2086 { 2087 int bit; 2088 2089 /* firewall: p->p_back must be NULL */ 2090 if (p->p_back != NULL) 2091 panic("setrunqueue"); 2092 2093 bit = p->p_priority >> 2; 2094 whichqs |= (1 << bit); 2095 p->p_forw = (struct proc *)&qs[bit]; 2096 p->p_back = qs[bit].ph_rlink; 2097 p->p_back->p_forw = p; 2098 qs[bit].ph_rlink = p; 2099 } 2100 2101 /* 2102 * remrunqueue(p) 2103 * 2104 * Call should be made at splclock(). 2105 */ 2106 void 2107 remrunqueue(p) 2108 struct proc *p; 2109 { 2110 int bit; 2111 2112 bit = p->p_priority >> 2; 2113 if ((whichqs & (1 << bit)) == 0) 2114 panic("remrunqueue"); 2115 2116 p->p_back->p_forw = p->p_forw; 2117 p->p_forw->p_back = p->p_back; 2118 p->p_back = NULL; /* for firewall checking. */ 2119 2120 if ((struct proc *)&qs[bit] == qs[bit].ph_link) 2121 whichqs &= ~(1 << bit); 2122 } 2123 2124 /* 2125 * Return the best possible estimate of the time in the timeval 2126 * to which tvp points. Unfortunately, we can't read the hardware registers. 2127 * We guarantee that the time will be greater than the value obtained by a 2128 * previous call. 2129 */ 2130 void 2131 microtime(tvp) 2132 register struct timeval *tvp; 2133 { 2134 int s = splclock(); 2135 static struct timeval lasttime; 2136 2137 *tvp = time; 2138 #ifdef notdef 2139 tvp->tv_usec += clkread(); 2140 while (tvp->tv_usec > 1000000) { 2141 tvp->tv_sec++; 2142 tvp->tv_usec -= 1000000; 2143 } 2144 #endif 2145 if (tvp->tv_sec == lasttime.tv_sec && 2146 tvp->tv_usec <= lasttime.tv_usec && 2147 (tvp->tv_usec = lasttime.tv_usec + 1) > 1000000) { 2148 tvp->tv_sec++; 2149 tvp->tv_usec -= 1000000; 2150 } 2151 lasttime = *tvp; 2152 splx(s); 2153 } 2154 2155 /* 2156 * Wait "n" microseconds. 2157 */ 2158 void 2159 delay(n) 2160 unsigned long n; 2161 { 2162 long N = cycles_per_usec * (n); 2163 2164 while (N > 0) /* XXX */ 2165 N -= 3; /* XXX */ 2166 } 2167 2168 #if defined(COMPAT_OSF1) || 1 /* XXX */ 2169 void cpu_exec_ecoff_setregs __P((struct proc *, struct exec_package *, 2170 u_long)); 2171 2172 void 2173 cpu_exec_ecoff_setregs(p, epp, stack) 2174 struct proc *p; 2175 struct exec_package *epp; 2176 u_long stack; 2177 { 2178 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2179 2180 setregs(p, epp, stack); 2181 p->p_md.md_tf->tf_regs[FRAME_GP] = execp->a.gp_value; 2182 } 2183 2184 /* 2185 * cpu_exec_ecoff_hook(): 2186 * cpu-dependent ECOFF format hook for execve(). 2187 * 2188 * Do any machine-dependent diddling of the exec package when doing ECOFF. 2189 * 2190 */ 2191 int 2192 cpu_exec_ecoff_hook(p, epp) 2193 struct proc *p; 2194 struct exec_package *epp; 2195 { 2196 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2197 extern struct emul emul_netbsd; 2198 #ifdef COMPAT_OSF1 2199 extern struct emul emul_osf1; 2200 #endif 2201 2202 switch (execp->f.f_magic) { 2203 #ifdef COMPAT_OSF1 2204 case ECOFF_MAGIC_ALPHA: 2205 epp->ep_emul = &emul_osf1; 2206 break; 2207 #endif 2208 2209 case ECOFF_MAGIC_NETBSD_ALPHA: 2210 epp->ep_emul = &emul_netbsd; 2211 break; 2212 2213 default: 2214 return ENOEXEC; 2215 } 2216 return 0; 2217 } 2218 #endif 2219 2220 int 2221 alpha_pa_access(pa) 2222 u_long pa; 2223 { 2224 int i; 2225 2226 for (i = 0; i < mem_cluster_cnt; i++) { 2227 if (pa < mem_clusters[i].start) 2228 continue; 2229 if ((pa - mem_clusters[i].start) >= 2230 (mem_clusters[i].size & ~PAGE_MASK)) 2231 continue; 2232 return (mem_clusters[i].size & PAGE_MASK); /* prot */ 2233 } 2234 return (PROT_NONE); 2235 } 2236 2237 /* XXX XXX BEGIN XXX XXX */ 2238 vm_offset_t alpha_XXX_dmamap_or; /* XXX */ 2239 /* XXX */ 2240 vm_offset_t /* XXX */ 2241 alpha_XXX_dmamap(v) /* XXX */ 2242 vm_offset_t v; /* XXX */ 2243 { /* XXX */ 2244 /* XXX */ 2245 return (vtophys(v) | alpha_XXX_dmamap_or); /* XXX */ 2246 } /* XXX */ 2247 /* XXX XXX END XXX XXX */ 2248
Indexes created Thu Oct 02 10:09:58 GMT 2025