machdep.c revision 1.126
1 /* $NetBSD: machdep.c,v 1.126 1998/06/24 01:09:45 ross 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_uvm.h" 68 #include "opt_pmap_new.h" 69 #include "opt_dec_3000_300.h" 70 #include "opt_dec_3000_500.h" 71 72 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 73 74 __KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.126 1998/06/24 01:09:45 ross Exp $"); 75 76 #include <sys/param.h> 77 #include <sys/systm.h> 78 #include <sys/signalvar.h> 79 #include <sys/kernel.h> 80 #include <sys/map.h> 81 #include <sys/proc.h> 82 #include <sys/buf.h> 83 #include <sys/reboot.h> 84 #include <sys/device.h> 85 #include <sys/file.h> 86 #ifdef REAL_CLISTS 87 #include <sys/clist.h> 88 #endif 89 #include <sys/callout.h> 90 #include <sys/malloc.h> 91 #include <sys/mbuf.h> 92 #include <sys/mman.h> 93 #include <sys/msgbuf.h> 94 #include <sys/ioctl.h> 95 #include <sys/tty.h> 96 #include <sys/user.h> 97 #include <sys/exec.h> 98 #include <sys/exec_ecoff.h> 99 #include <vm/vm.h> 100 #include <sys/sysctl.h> 101 #include <sys/core.h> 102 #include <sys/kcore.h> 103 #include <machine/kcore.h> 104 #ifdef SYSVMSG 105 #include <sys/msg.h> 106 #endif 107 #ifdef SYSVSEM 108 #include <sys/sem.h> 109 #endif 110 #ifdef SYSVSHM 111 #include <sys/shm.h> 112 #endif 113 114 #include <sys/mount.h> 115 #include <sys/syscallargs.h> 116 117 #include <vm/vm_kern.h> 118 119 #if defined(UVM) 120 #include <uvm/uvm_extern.h> 121 #endif 122 123 #include <dev/cons.h> 124 125 #include <machine/autoconf.h> 126 #include <machine/cpu.h> 127 #include <machine/reg.h> 128 #include <machine/rpb.h> 129 #include <machine/prom.h> 130 #include <machine/conf.h> 131 132 #include <net/netisr.h> 133 #include <net/if.h> 134 135 #ifdef INET 136 #include <net/route.h> 137 #include <netinet/in.h> 138 #include <netinet/ip_var.h> 139 #include "arp.h" 140 #if NARP > 0 141 #include <netinet/if_inarp.h> 142 #endif 143 #endif 144 #ifdef NS 145 #include <netns/ns_var.h> 146 #endif 147 #ifdef ISO 148 #include <netiso/iso.h> 149 #include <netiso/clnp.h> 150 #endif 151 #ifdef CCITT 152 #include <netccitt/x25.h> 153 #include <netccitt/pk.h> 154 #include <netccitt/pk_extern.h> 155 #endif 156 #ifdef NATM 157 #include <netnatm/natm.h> 158 #endif 159 #ifdef NETATALK 160 #include <netatalk/at_extern.h> 161 #endif 162 #include "ppp.h" 163 #if NPPP > 0 164 #include <net/ppp_defs.h> 165 #include <net/if_ppp.h> 166 #endif 167 168 #ifdef DDB 169 #include <machine/db_machdep.h> 170 #include <ddb/db_access.h> 171 #include <ddb/db_sym.h> 172 #include <ddb/db_extern.h> 173 #include <ddb/db_interface.h> 174 #endif 175 176 #if defined(UVM) 177 vm_map_t exec_map = NULL; 178 vm_map_t mb_map = NULL; 179 vm_map_t phys_map = NULL; 180 #else 181 vm_map_t buffer_map; 182 #endif 183 184 /* 185 * Declare these as initialized data so we can patch them. 186 */ 187 int nswbuf = 0; 188 #ifdef NBUF 189 int nbuf = NBUF; 190 #else 191 int nbuf = 0; 192 #endif 193 #ifdef BUFPAGES 194 int bufpages = BUFPAGES; 195 #else 196 int bufpages = 0; 197 #endif 198 caddr_t msgbufaddr; 199 200 int maxmem; /* max memory per process */ 201 202 int totalphysmem; /* total amount of physical memory in system */ 203 int physmem; /* physical memory used by NetBSD + some rsvd */ 204 int resvmem; /* amount of memory reserved for PROM */ 205 int unusedmem; /* amount of memory for OS that we don't use */ 206 int unknownmem; /* amount of memory with an unknown use */ 207 208 int cputype; /* system type, from the RPB */ 209 210 /* 211 * XXX We need an address to which we can assign things so that they 212 * won't be optimized away because we didn't use the value. 213 */ 214 u_int32_t no_optimize; 215 216 /* the following is used externally (sysctl_hw) */ 217 char machine[] = MACHINE; /* from <machine/param.h> */ 218 char machine_arch[] = MACHINE_ARCH; /* from <machine/param.h> */ 219 char cpu_model[128]; 220 221 struct user *proc0paddr; 222 223 /* Number of machine cycles per microsecond */ 224 u_int64_t cycles_per_usec; 225 226 /* number of cpus in the box. really! */ 227 int ncpus; 228 229 struct bootinfo_kernel bootinfo; 230 231 /* For built-in TCDS */ 232 #if defined(DEC_3000_300) || defined(DEC_3000_500) 233 u_int8_t dec_3000_scsiid[2], dec_3000_scsifast[2]; 234 #endif 235 236 struct platform platform; 237 238 u_int32_t vm_mbuf_size = _VM_MBUF_SIZE; 239 u_int32_t vm_kmem_size = _VM_KMEM_SIZE; 240 u_int32_t vm_phys_size = _VM_PHYS_SIZE; 241 242 #ifdef DDB 243 /* start and end of kernel symbol table */ 244 void *ksym_start, *ksym_end; 245 #endif 246 247 /* for cpu_sysctl() */ 248 int alpha_unaligned_print = 1; /* warn about unaligned accesses */ 249 int alpha_unaligned_fix = 1; /* fix up unaligned accesses */ 250 int alpha_unaligned_sigbus = 0; /* don't SIGBUS on fixed-up accesses */ 251 252 /* 253 * XXX This should be dynamically sized, but we have the chicken-egg problem! 254 * XXX it should also be larger than it is, because not all of the mddt 255 * XXX clusters end up being used for VM. 256 */ 257 phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX]; /* low size bits overloaded */ 258 int mem_cluster_cnt; 259 260 caddr_t allocsys __P((caddr_t)); 261 int cpu_dump __P((void)); 262 int cpu_dumpsize __P((void)); 263 u_long cpu_dump_mempagecnt __P((void)); 264 void dumpsys __P((void)); 265 void identifycpu __P((void)); 266 void netintr __P((void)); 267 void printregs __P((struct reg *)); 268 269 void 270 alpha_init(pfn, ptb, bim, bip, biv) 271 u_long pfn; /* first free PFN number */ 272 u_long ptb; /* PFN of current level 1 page table */ 273 u_long bim; /* bootinfo magic */ 274 u_long bip; /* bootinfo pointer */ 275 u_long biv; /* bootinfo version */ 276 { 277 extern char kernel_text[], _end[]; 278 struct mddt *mddtp; 279 struct mddt_cluster *memc; 280 int i, mddtweird; 281 struct vm_physseg *vps; 282 vm_offset_t kernstart, kernend; 283 vm_offset_t kernstartpfn, kernendpfn, pfn0, pfn1; 284 vm_size_t size; 285 char *p; 286 caddr_t v; 287 char *bootinfo_msg; 288 289 /* NO OUTPUT ALLOWED UNTIL FURTHER NOTICE */ 290 291 /* 292 * Turn off interrupts (not mchecks) and floating point. 293 * Make sure the instruction and data streams are consistent. 294 */ 295 (void)alpha_pal_swpipl(ALPHA_PSL_IPL_HIGH); 296 alpha_pal_wrfen(0); 297 ALPHA_TBIA(); 298 alpha_pal_imb(); 299 300 /* 301 * Get critical system information (if possible, from the 302 * information provided by the boot program). 303 */ 304 bootinfo_msg = NULL; 305 if (bim == BOOTINFO_MAGIC) { 306 if (biv == 0) { /* backward compat */ 307 biv = *(u_long *)bip; 308 bip += 8; 309 } 310 switch (biv) { 311 case 1: { 312 struct bootinfo_v1 *v1p = (struct bootinfo_v1 *)bip; 313 314 bootinfo.ssym = v1p->ssym; 315 bootinfo.esym = v1p->esym; 316 /* hwrpb may not be provided by boot block in v1 */ 317 if (v1p->hwrpb != NULL) { 318 bootinfo.hwrpb_phys = 319 ((struct rpb *)v1p->hwrpb)->rpb_phys; 320 bootinfo.hwrpb_size = v1p->hwrpbsize; 321 } else { 322 bootinfo.hwrpb_phys = 323 ((struct rpb *)HWRPB_ADDR)->rpb_phys; 324 bootinfo.hwrpb_size = 325 ((struct rpb *)HWRPB_ADDR)->rpb_size; 326 } 327 bcopy(v1p->boot_flags, bootinfo.boot_flags, 328 min(sizeof v1p->boot_flags, 329 sizeof bootinfo.boot_flags)); 330 bcopy(v1p->booted_kernel, bootinfo.booted_kernel, 331 min(sizeof v1p->booted_kernel, 332 sizeof bootinfo.booted_kernel)); 333 /* booted dev not provided in bootinfo */ 334 init_prom_interface((struct rpb *) 335 ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys)); 336 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 337 sizeof bootinfo.booted_dev); 338 break; 339 } 340 default: 341 bootinfo_msg = "unknown bootinfo version"; 342 goto nobootinfo; 343 } 344 } else { 345 bootinfo_msg = "boot program did not pass bootinfo"; 346 nobootinfo: 347 bootinfo.ssym = (u_long)_end; 348 bootinfo.esym = (u_long)_end; 349 bootinfo.hwrpb_phys = ((struct rpb *)HWRPB_ADDR)->rpb_phys; 350 bootinfo.hwrpb_size = ((struct rpb *)HWRPB_ADDR)->rpb_size; 351 init_prom_interface((struct rpb *)HWRPB_ADDR); 352 prom_getenv(PROM_E_BOOTED_OSFLAGS, bootinfo.boot_flags, 353 sizeof bootinfo.boot_flags); 354 prom_getenv(PROM_E_BOOTED_FILE, bootinfo.booted_kernel, 355 sizeof bootinfo.booted_kernel); 356 prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev, 357 sizeof bootinfo.booted_dev); 358 } 359 360 /* 361 * Initialize the kernel's mapping of the RPB. It's needed for 362 * lots of things. 363 */ 364 hwrpb = (struct rpb *)ALPHA_PHYS_TO_K0SEG(bootinfo.hwrpb_phys); 365 366 #if defined(DEC_3000_300) || defined(DEC_3000_500) 367 if (hwrpb->rpb_type == ST_DEC_3000_300 || 368 hwrpb->rpb_type == ST_DEC_3000_500) { 369 prom_getenv(PROM_E_SCSIID, dec_3000_scsiid, 370 sizeof(dec_3000_scsiid)); 371 prom_getenv(PROM_E_SCSIFAST, dec_3000_scsifast, 372 sizeof(dec_3000_scsifast)); 373 } 374 #endif 375 376 /* 377 * Remember how many cycles there are per microsecond, 378 * so that we can use delay(). Round up, for safety. 379 */ 380 cycles_per_usec = (hwrpb->rpb_cc_freq + 999999) / 1000000; 381 382 /* 383 * Initalize the (temporary) bootstrap console interface, so 384 * we can use printf until the VM system starts being setup. 385 * The real console is initialized before then. 386 */ 387 init_bootstrap_console(); 388 389 /* OUTPUT NOW ALLOWED */ 390 391 /* delayed from above */ 392 if (bootinfo_msg) 393 printf("WARNING: %s (0x%lx, 0x%lx, 0x%lx)\n", 394 bootinfo_msg, bim, bip, biv); 395 396 /* 397 * Point interrupt/exception vectors to our own. 398 */ 399 alpha_pal_wrent(XentInt, ALPHA_KENTRY_INT); 400 alpha_pal_wrent(XentArith, ALPHA_KENTRY_ARITH); 401 alpha_pal_wrent(XentMM, ALPHA_KENTRY_MM); 402 alpha_pal_wrent(XentIF, ALPHA_KENTRY_IF); 403 alpha_pal_wrent(XentUna, ALPHA_KENTRY_UNA); 404 alpha_pal_wrent(XentSys, ALPHA_KENTRY_SYS); 405 406 /* 407 * Clear pending machine checks and error reports, and enable 408 * system- and processor-correctable error reporting. 409 */ 410 alpha_pal_wrmces(alpha_pal_rdmces() & 411 ~(ALPHA_MCES_DSC|ALPHA_MCES_DPC)); 412 413 /* 414 * Find out what hardware we're on, and do basic initialization. 415 */ 416 cputype = hwrpb->rpb_type; 417 if (cputype >= ncpuinit) { 418 platform_not_supported(); 419 /* NOTREACHED */ 420 } 421 (*cpuinit[cputype].init)(); 422 strcpy(cpu_model, platform.model); 423 424 /* 425 * Initalize the real console, so the the bootstrap console is 426 * no longer necessary. 427 */ 428 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 429 if (!pmap_uses_prom_console()) 430 #endif 431 (*platform.cons_init)(); 432 433 #ifdef DIAGNOSTIC 434 /* Paranoid sanity checking */ 435 436 /* We should always be running on the the primary. */ 437 assert(hwrpb->rpb_primary_cpu_id == alpha_pal_whami()); 438 439 /* 440 * On single-CPU systypes, the primary should always be CPU 0, 441 * except on Alpha 8200 systems where the CPU id is related 442 * to the VID, which is related to the Turbo Laser node id. 443 */ 444 if (cputype != ST_DEC_21000) 445 assert(hwrpb->rpb_primary_cpu_id == 0); 446 #endif 447 448 /* NO MORE FIRMWARE ACCESS ALLOWED */ 449 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 450 /* 451 * XXX (unless _PMAP_MAY_USE_PROM_CONSOLE is defined and 452 * XXX pmap_uses_prom_console() evaluates to non-zero.) 453 */ 454 #endif 455 456 /* 457 * find out this system's page size 458 */ 459 PAGE_SIZE = hwrpb->rpb_page_size; 460 if (PAGE_SIZE != 8192) 461 panic("page size %d != 8192?!", PAGE_SIZE); 462 463 /* 464 * Initialize PAGE_SIZE-dependent variables. 465 */ 466 #if defined(UVM) 467 uvm_setpagesize(); 468 #else 469 vm_set_page_size(); 470 #endif 471 472 /* 473 * Find the beginning and end of the kernel (and leave a 474 * bit of space before the beginning for the bootstrap 475 * stack). 476 */ 477 kernstart = trunc_page(kernel_text) - 2 * PAGE_SIZE; 478 #ifdef DDB 479 ksym_start = (void *)bootinfo.ssym; 480 ksym_end = (void *)bootinfo.esym; 481 kernend = (vm_offset_t)round_page(ksym_end); 482 #else 483 kernend = (vm_offset_t)round_page(_end); 484 #endif 485 486 kernstartpfn = atop(ALPHA_K0SEG_TO_PHYS(kernstart)); 487 kernendpfn = atop(ALPHA_K0SEG_TO_PHYS(kernend)); 488 489 /* 490 * Find out how much memory is available, by looking at 491 * the memory cluster descriptors. This also tries to do 492 * its best to detect things things that have never been seen 493 * before... 494 */ 495 mddtp = (struct mddt *)(((caddr_t)hwrpb) + hwrpb->rpb_memdat_off); 496 497 /* MDDT SANITY CHECKING */ 498 mddtweird = 0; 499 if (mddtp->mddt_cluster_cnt < 2) { 500 mddtweird = 1; 501 printf("WARNING: weird number of mem clusters: %d\n", 502 mddtp->mddt_cluster_cnt); 503 } 504 505 #if 0 506 printf("Memory cluster count: %d\n", mddtp->mddt_cluster_cnt); 507 #endif 508 509 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 510 memc = &mddtp->mddt_clusters[i]; 511 #if 0 512 printf("MEMC %d: pfn 0x%lx cnt 0x%lx usage 0x%lx\n", i, 513 memc->mddt_pfn, memc->mddt_pg_cnt, memc->mddt_usage); 514 #endif 515 totalphysmem += memc->mddt_pg_cnt; 516 if (mem_cluster_cnt < VM_PHYSSEG_MAX) { /* XXX */ 517 mem_clusters[mem_cluster_cnt].start = 518 ptoa(memc->mddt_pfn); 519 mem_clusters[mem_cluster_cnt].size = 520 ptoa(memc->mddt_pg_cnt); 521 if (memc->mddt_usage & MDDT_mbz || 522 memc->mddt_usage & MDDT_NONVOLATILE || /* XXX */ 523 memc->mddt_usage & MDDT_PALCODE) 524 mem_clusters[mem_cluster_cnt].size |= 525 PROT_READ; 526 else 527 mem_clusters[mem_cluster_cnt].size |= 528 PROT_READ | PROT_WRITE | PROT_EXEC; 529 mem_cluster_cnt++; 530 } 531 532 if (memc->mddt_usage & MDDT_mbz) { 533 mddtweird = 1; 534 printf("WARNING: mem cluster %d has weird " 535 "usage 0x%lx\n", i, memc->mddt_usage); 536 unknownmem += memc->mddt_pg_cnt; 537 continue; 538 } 539 if (memc->mddt_usage & MDDT_NONVOLATILE) { 540 /* XXX should handle these... */ 541 printf("WARNING: skipping non-volatile mem " 542 "cluster %d\n", i); 543 unusedmem += memc->mddt_pg_cnt; 544 continue; 545 } 546 if (memc->mddt_usage & MDDT_PALCODE) { 547 resvmem += memc->mddt_pg_cnt; 548 continue; 549 } 550 551 /* 552 * We have a memory cluster available for system 553 * software use. We must determine if this cluster 554 * holds the kernel. 555 */ 556 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 557 /* 558 * XXX If the kernel uses the PROM console, we only use the 559 * XXX memory after the kernel in the first system segment, 560 * XXX to avoid clobbering prom mapping, data, etc. 561 */ 562 if (!pmap_uses_prom_console() || physmem == 0) { 563 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 564 physmem += memc->mddt_pg_cnt; 565 pfn0 = memc->mddt_pfn; 566 pfn1 = memc->mddt_pfn + memc->mddt_pg_cnt; 567 if (pfn0 <= kernstartpfn && kernendpfn <= pfn1) { 568 /* 569 * Must compute the location of the kernel 570 * within the segment. 571 */ 572 #if 0 573 printf("Cluster %d contains kernel\n", i); 574 #endif 575 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 576 if (!pmap_uses_prom_console()) { 577 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 578 if (pfn0 < kernstartpfn) { 579 /* 580 * There is a chunk before the kernel. 581 */ 582 #if 0 583 printf("Loading chunk before kernel: " 584 "0x%lx / 0x%lx\n", pfn0, kernstartpfn); 585 #endif 586 #if defined(UVM) 587 uvm_page_physload(pfn0, kernstartpfn, 588 pfn0, kernstartpfn); 589 #else 590 vm_page_physload(pfn0, kernstartpfn, 591 pfn0, kernstartpfn); 592 #endif 593 } 594 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 595 } 596 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 597 if (kernendpfn < pfn1) { 598 /* 599 * There is a chunk after the kernel. 600 */ 601 #if 0 602 printf("Loading chunk after kernel: " 603 "0x%lx / 0x%lx\n", kernendpfn, pfn1); 604 #endif 605 #if defined(UVM) 606 uvm_page_physload(kernendpfn, pfn1, 607 kernendpfn, pfn1); 608 #else 609 vm_page_physload(kernendpfn, pfn1, 610 kernendpfn, pfn1); 611 #endif 612 } 613 } else { 614 /* 615 * Just load this cluster as one chunk. 616 */ 617 #if 0 618 printf("Loading cluster %d: 0x%lx / 0x%lx\n", i, 619 pfn0, pfn1); 620 #endif 621 #if defined(UVM) 622 uvm_page_physload(pfn0, pfn1, pfn0, pfn1); 623 #else 624 vm_page_physload(pfn0, pfn1, pfn0, pfn1); 625 #endif 626 } 627 #ifdef _PMAP_MAY_USE_PROM_CONSOLE 628 } 629 #endif /* _PMAP_MAY_USE_PROM_CONSOLE */ 630 } 631 632 /* 633 * Dump out the MDDT if it looks odd... 634 */ 635 if (mddtweird) { 636 printf("\n"); 637 printf("complete memory cluster information:\n"); 638 for (i = 0; i < mddtp->mddt_cluster_cnt; i++) { 639 printf("mddt %d:\n", i); 640 printf("\tpfn %lx\n", 641 mddtp->mddt_clusters[i].mddt_pfn); 642 printf("\tcnt %lx\n", 643 mddtp->mddt_clusters[i].mddt_pg_cnt); 644 printf("\ttest %lx\n", 645 mddtp->mddt_clusters[i].mddt_pg_test); 646 printf("\tbva %lx\n", 647 mddtp->mddt_clusters[i].mddt_v_bitaddr); 648 printf("\tbpa %lx\n", 649 mddtp->mddt_clusters[i].mddt_p_bitaddr); 650 printf("\tbcksum %lx\n", 651 mddtp->mddt_clusters[i].mddt_bit_cksum); 652 printf("\tusage %lx\n", 653 mddtp->mddt_clusters[i].mddt_usage); 654 } 655 printf("\n"); 656 } 657 658 if (totalphysmem == 0) 659 panic("can't happen: system seems to have no memory!"); 660 661 #ifdef LIMITMEM 662 /* 663 * XXX Kludge so we can run on machines with memory larger 664 * XXX than 1G until all device drivers are converted to 665 * XXX use bus_dma. (Relies on the fact that vm_physmem 666 * XXX sorted in order of increasing addresses.) 667 */ 668 if (vm_physmem[vm_nphysseg - 1].end > atop(LIMITMEM * 1024 * 1024)) { 669 670 printf("******** LIMITING MEMORY TO %dMB **********\n", 671 LIMITMEM); 672 673 do { 674 u_long ovf; 675 676 vps = &vm_physmem[vm_nphysseg - 1]; 677 678 if (vps->start >= atop(LIMITMEM * 1024 * 1024)) { 679 /* 680 * If the start is too high, just drop 681 * the whole segment. 682 * 683 * XXX can start != avail_start in this 684 * XXX case? wouldn't that mean that 685 * XXX some memory was stolen above the 686 * XXX limit? What to do? 687 */ 688 ovf = vps->end - vps->start; 689 vm_nphysseg--; 690 } else { 691 /* 692 * If the start is OK, calculate how much 693 * to drop and drop it. 694 */ 695 ovf = vps->end - atop(LIMITMEM * 1024 * 1024); 696 vps->end -= ovf; 697 vps->avail_end -= ovf; 698 } 699 physmem -= ovf; 700 unusedmem += ovf; 701 } while (vps->end > atop(LIMITMEM * 1024 * 1024)); 702 } 703 #endif /* LIMITMEM */ 704 705 maxmem = physmem; 706 707 #if 0 708 printf("totalphysmem = %d\n", totalphysmem); 709 printf("physmem = %d\n", physmem); 710 printf("resvmem = %d\n", resvmem); 711 printf("unusedmem = %d\n", unusedmem); 712 printf("unknownmem = %d\n", unknownmem); 713 #endif 714 715 /* 716 * Adjust some parameters if the amount of physmem 717 * available would cause us to croak. This is completely 718 * eyeballed and isn't meant to be the final answer. 719 * vm_phys_size is probably the only one to really worry 720 * about. 721 * 722 * It's for booting a GENERIC kernel on a large memory platform. 723 */ 724 if (physmem >= atop(128 * 1024 * 1024)) { 725 vm_mbuf_size <<= 1; 726 vm_kmem_size <<= 3; 727 vm_phys_size <<= 2; 728 } 729 730 /* 731 * Initialize error message buffer (at end of core). 732 */ 733 { 734 size_t sz = round_page(MSGBUFSIZE); 735 736 vps = &vm_physmem[vm_nphysseg - 1]; 737 738 /* shrink so that it'll fit in the last segment */ 739 if ((vps->avail_end - vps->avail_start) < atop(sz)) 740 sz = ptoa(vps->avail_end - vps->avail_start); 741 742 vps->end -= atop(sz); 743 vps->avail_end -= atop(sz); 744 msgbufaddr = (caddr_t) ALPHA_PHYS_TO_K0SEG(ptoa(vps->end)); 745 initmsgbuf(msgbufaddr, sz); 746 747 /* Remove the last segment if it now has no pages. */ 748 if (vps->start == vps->end) 749 vm_nphysseg--; 750 751 /* warn if the message buffer had to be shrunk */ 752 if (sz != round_page(MSGBUFSIZE)) 753 printf("WARNING: %d bytes not available for msgbuf in last cluster (%d used)\n", 754 round_page(MSGBUFSIZE), sz); 755 756 } 757 758 /* 759 * Init mapping for u page(s) for proc 0 760 */ 761 proc0.p_addr = proc0paddr = 762 (struct user *)pmap_steal_memory(UPAGES * PAGE_SIZE, NULL, NULL); 763 764 /* 765 * Allocate space for system data structures. These data structures 766 * are allocated here instead of cpu_startup() because physical 767 * memory is directly addressable. We don't have to map these into 768 * virtual address space. 769 */ 770 size = (vm_size_t)allocsys(0); 771 v = (caddr_t)pmap_steal_memory(size, NULL, NULL); 772 if ((allocsys(v) - v) != size) 773 panic("alpha_init: table size inconsistency"); 774 775 /* 776 * Initialize the virtual memory system, and set the 777 * page table base register in proc 0's PCB. 778 */ 779 pmap_bootstrap(ALPHA_PHYS_TO_K0SEG(ptb << PGSHIFT), 780 hwrpb->rpb_max_asn); 781 782 /* 783 * Initialize the rest of proc 0's PCB, and cache its physical 784 * address. 785 */ 786 proc0.p_md.md_pcbpaddr = 787 (struct pcb *)ALPHA_K0SEG_TO_PHYS((vm_offset_t)&proc0paddr->u_pcb); 788 789 /* 790 * Set the kernel sp, reserving space for an (empty) trapframe, 791 * and make proc0's trapframe pointer point to it for sanity. 792 */ 793 proc0paddr->u_pcb.pcb_hw.apcb_ksp = 794 (u_int64_t)proc0paddr + USPACE - sizeof(struct trapframe); 795 proc0.p_md.md_tf = 796 (struct trapframe *)proc0paddr->u_pcb.pcb_hw.apcb_ksp; 797 798 /* 799 * Look at arguments passed to us and compute boothowto. 800 */ 801 802 boothowto = RB_SINGLE; 803 #ifdef KADB 804 boothowto |= RB_KDB; 805 #endif 806 for (p = bootinfo.boot_flags; p && *p != '\0'; p++) { 807 /* 808 * Note that we'd really like to differentiate case here, 809 * but the Alpha AXP Architecture Reference Manual 810 * says that we shouldn't. 811 */ 812 switch (*p) { 813 case 'a': /* autoboot */ 814 case 'A': 815 boothowto &= ~RB_SINGLE; 816 break; 817 818 #ifdef DEBUG 819 case 'c': /* crash dump immediately after autoconfig */ 820 case 'C': 821 boothowto |= RB_DUMP; 822 break; 823 #endif 824 825 #if defined(KGDB) || defined(DDB) 826 case 'd': /* break into the kernel debugger ASAP */ 827 case 'D': 828 boothowto |= RB_KDB; 829 break; 830 #endif 831 832 case 'h': /* always halt, never reboot */ 833 case 'H': 834 boothowto |= RB_HALT; 835 break; 836 837 #if 0 838 case 'm': /* mini root present in memory */ 839 case 'M': 840 boothowto |= RB_MINIROOT; 841 break; 842 #endif 843 844 case 'n': /* askname */ 845 case 'N': 846 boothowto |= RB_ASKNAME; 847 break; 848 849 case 's': /* single-user (default, supported for sanity) */ 850 case 'S': 851 boothowto |= RB_SINGLE; 852 break; 853 854 case '-': 855 /* 856 * Just ignore this. It's not required, but it's 857 * common for it to be passed regardless. 858 */ 859 break; 860 861 default: 862 printf("Unrecognized boot flag '%c'.\n", *p); 863 break; 864 } 865 } 866 867 /* 868 * Initialize debuggers, and break into them if appropriate. 869 */ 870 #ifdef DDB 871 db_machine_init(); 872 ddb_init(ksym_start, ksym_end); 873 if (boothowto & RB_KDB) 874 Debugger(); 875 #endif 876 #ifdef KGDB 877 if (boothowto & RB_KDB) 878 kgdb_connect(0); 879 #endif 880 881 /* 882 * Figure out the number of cpus in the box, from RPB fields. 883 * Really. We mean it. 884 */ 885 for (i = 0; i < hwrpb->rpb_pcs_cnt; i++) { 886 struct pcs *pcsp; 887 888 pcsp = LOCATE_PCS(hwrpb, i); 889 if ((pcsp->pcs_flags & PCS_PP) != 0) 890 ncpus++; 891 } 892 893 /* 894 * Figure out our clock frequency, from RPB fields. 895 */ 896 hz = hwrpb->rpb_intr_freq >> 12; 897 if (!(60 <= hz && hz <= 10240)) { 898 hz = 1024; 899 #ifdef DIAGNOSTIC 900 printf("WARNING: unbelievable rpb_intr_freq: %ld (%d hz)\n", 901 hwrpb->rpb_intr_freq, hz); 902 #endif 903 } 904 905 } 906 907 /* 908 * Allocate space for system data structures. We are given 909 * a starting virtual address and we return a final virtual 910 * address; along the way we set each data structure pointer. 911 * 912 * We call allocsys() with 0 to find out how much space we want, 913 * allocate that much and fill it with zeroes, and the call 914 * allocsys() again with the correct base virtual address. 915 */ 916 caddr_t 917 allocsys(v) 918 caddr_t v; 919 { 920 921 #define valloc(name, type, num) \ 922 (name) = (type *)v; v = (caddr_t)ALIGN((name)+(num)) 923 #ifdef REAL_CLISTS 924 valloc(cfree, struct cblock, nclist); 925 #endif 926 valloc(callout, struct callout, ncallout); 927 #ifdef SYSVSHM 928 valloc(shmsegs, struct shmid_ds, shminfo.shmmni); 929 #endif 930 #ifdef SYSVSEM 931 valloc(sema, struct semid_ds, seminfo.semmni); 932 valloc(sem, struct sem, seminfo.semmns); 933 /* This is pretty disgusting! */ 934 valloc(semu, int, (seminfo.semmnu * seminfo.semusz) / sizeof(int)); 935 #endif 936 #ifdef SYSVMSG 937 valloc(msgpool, char, msginfo.msgmax); 938 valloc(msgmaps, struct msgmap, msginfo.msgseg); 939 valloc(msghdrs, struct msg, msginfo.msgtql); 940 valloc(msqids, struct msqid_ds, msginfo.msgmni); 941 #endif 942 943 /* 944 * Determine how many buffers to allocate. 945 * We allocate 10% of memory for buffer space. Insure a 946 * minimum of 16 buffers. We allocate 1/2 as many swap buffer 947 * headers as file i/o buffers. 948 */ 949 if (bufpages == 0) 950 bufpages = (physmem * 10) / (CLSIZE * 100); 951 if (nbuf == 0) { 952 nbuf = bufpages; 953 if (nbuf < 16) 954 nbuf = 16; 955 } 956 if (nswbuf == 0) { 957 nswbuf = (nbuf / 2) &~ 1; /* force even */ 958 if (nswbuf > 256) 959 nswbuf = 256; /* sanity */ 960 } 961 #if !defined(UVM) 962 valloc(swbuf, struct buf, nswbuf); 963 #endif 964 valloc(buf, struct buf, nbuf); 965 return (v); 966 #undef valloc 967 } 968 969 void 970 consinit() 971 { 972 973 /* 974 * Everything related to console initialization is done 975 * in alpha_init(). 976 */ 977 #if defined(DIAGNOSTIC) && defined(_PMAP_MAY_USE_PROM_CONSOLE) 978 printf("consinit: %susing prom console\n", 979 pmap_uses_prom_console() ? "" : "not "); 980 #endif 981 } 982 983 #include "pckbc.h" 984 #include "pckbd.h" 985 #if (NPCKBC > 0) && (NPCKBD == 0) 986 987 #include <machine/bus.h> 988 #include <dev/isa/pckbcvar.h> 989 990 /* 991 * This is called by the pbkbc driver if no pckbd is configured. 992 * On the i386, it is used to glue in the old, deprecated console 993 * code. On the Alpha, it does nothing. 994 */ 995 int 996 pckbc_machdep_cnattach(kbctag, kbcslot) 997 pckbc_tag_t kbctag; 998 pckbc_slot_t kbcslot; 999 { 1000 1001 return (ENXIO); 1002 } 1003 #endif /* NPCKBC > 0 && NPCKBD == 0 */ 1004 1005 void 1006 cpu_startup() 1007 { 1008 register unsigned i; 1009 int base, residual; 1010 vm_offset_t minaddr, maxaddr; 1011 vm_size_t size; 1012 #if defined(DEBUG) 1013 extern int pmapdebug; 1014 int opmapdebug = pmapdebug; 1015 1016 pmapdebug = 0; 1017 #endif 1018 1019 /* 1020 * Good {morning,afternoon,evening,night}. 1021 */ 1022 printf(version); 1023 identifycpu(); 1024 printf("real mem = %lu (%lu reserved for PROM, %lu used by NetBSD)\n", 1025 ptoa(totalphysmem), ptoa(resvmem), ptoa(physmem)); 1026 if (unusedmem) 1027 printf("WARNING: unused memory = %d bytes\n", ctob(unusedmem)); 1028 if (unknownmem) 1029 printf("WARNING: %d bytes of memory with unknown purpose\n", 1030 ctob(unknownmem)); 1031 1032 /* 1033 * Allocate virtual address space for file I/O buffers. 1034 * Note they are different than the array of headers, 'buf', 1035 * and usually occupy more virtual memory than physical. 1036 */ 1037 size = MAXBSIZE * nbuf; 1038 #if defined(UVM) 1039 if (uvm_map(kernel_map, (vm_offset_t *) &buffers, round_page(size), 1040 NULL, UVM_UNKNOWN_OFFSET, 1041 UVM_MAPFLAG(UVM_PROT_NONE, UVM_PROT_NONE, UVM_INH_NONE, 1042 UVM_ADV_NORMAL, 0)) != KERN_SUCCESS) 1043 panic("startup: cannot allocate VM for buffers"); 1044 #else 1045 buffer_map = kmem_suballoc(kernel_map, (vm_offset_t *)&buffers, 1046 &maxaddr, size, TRUE); 1047 minaddr = (vm_offset_t)buffers; 1048 if (vm_map_find(buffer_map, vm_object_allocate(size), (vm_offset_t)0, 1049 &minaddr, size, FALSE) != KERN_SUCCESS) 1050 panic("startup: cannot allocate buffers"); 1051 #endif /* UVM */ 1052 base = bufpages / nbuf; 1053 residual = bufpages % nbuf; 1054 for (i = 0; i < nbuf; i++) { 1055 #if defined(UVM) 1056 vm_size_t curbufsize; 1057 vm_offset_t curbuf; 1058 struct vm_page *pg; 1059 1060 /* 1061 * Each buffer has MAXBSIZE bytes of VM space allocated. Of 1062 * that MAXBSIZE space, we allocate and map (base+1) pages 1063 * for the first "residual" buffers, and then we allocate 1064 * "base" pages for the rest. 1065 */ 1066 curbuf = (vm_offset_t) buffers + (i * MAXBSIZE); 1067 curbufsize = CLBYTES * ((i < residual) ? (base+1) : base); 1068 1069 while (curbufsize) { 1070 pg = uvm_pagealloc(NULL, 0, NULL); 1071 if (pg == NULL) 1072 panic("cpu_startup: not enough memory for " 1073 "buffer cache"); 1074 #if defined(PMAP_NEW) 1075 pmap_kenter_pgs(curbuf, &pg, 1); 1076 #else 1077 pmap_enter(kernel_map->pmap, curbuf, 1078 VM_PAGE_TO_PHYS(pg), VM_PROT_ALL, TRUE); 1079 #endif 1080 curbuf += PAGE_SIZE; 1081 curbufsize -= PAGE_SIZE; 1082 } 1083 #else /* ! UVM */ 1084 vm_size_t curbufsize; 1085 vm_offset_t curbuf; 1086 1087 /* 1088 * First <residual> buffers get (base+1) physical pages 1089 * allocated for them. The rest get (base) physical pages. 1090 * 1091 * The rest of each buffer occupies virtual space, 1092 * but has no physical memory allocated for it. 1093 */ 1094 curbuf = (vm_offset_t)buffers + i * MAXBSIZE; 1095 curbufsize = CLBYTES * (i < residual ? base+1 : base); 1096 vm_map_pageable(buffer_map, curbuf, curbuf+curbufsize, FALSE); 1097 vm_map_simplify(buffer_map, curbuf); 1098 #endif /* UVM */ 1099 } 1100 /* 1101 * Allocate a submap for exec arguments. This map effectively 1102 * limits the number of processes exec'ing at any time. 1103 */ 1104 #if defined(UVM) 1105 exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 1106 16 * NCARGS, TRUE, FALSE, NULL); 1107 #else 1108 exec_map = kmem_suballoc(kernel_map, &minaddr, &maxaddr, 1109 16 * NCARGS, TRUE); 1110 #endif 1111 1112 /* 1113 * Allocate a submap for physio 1114 */ 1115 #if defined(UVM) 1116 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 1117 VM_PHYS_SIZE, TRUE, FALSE, NULL); 1118 #else 1119 phys_map = kmem_suballoc(kernel_map, &minaddr, &maxaddr, 1120 VM_PHYS_SIZE, TRUE); 1121 #endif 1122 1123 /* 1124 * Finally, allocate mbuf cluster submap. 1125 */ 1126 #if defined(UVM) 1127 mb_map = uvm_km_suballoc(kernel_map, (vm_offset_t *)&mbutl, &maxaddr, 1128 VM_MBUF_SIZE, FALSE, FALSE, NULL); 1129 #else 1130 mb_map = kmem_suballoc(kernel_map, (vm_offset_t *)&mbutl, &maxaddr, 1131 VM_MBUF_SIZE, FALSE); 1132 #endif 1133 /* 1134 * Initialize callouts 1135 */ 1136 callfree = callout; 1137 for (i = 1; i < ncallout; i++) 1138 callout[i-1].c_next = &callout[i]; 1139 callout[i-1].c_next = NULL; 1140 1141 #if defined(DEBUG) 1142 pmapdebug = opmapdebug; 1143 #endif 1144 #if defined(UVM) 1145 printf("avail mem = %ld\n", (long)ptoa(uvmexp.free)); 1146 #else 1147 printf("avail mem = %ld\n", (long)ptoa(cnt.v_free_count)); 1148 #endif 1149 printf("using %ld buffers containing %ld bytes of memory\n", 1150 (long)nbuf, (long)(bufpages * CLBYTES)); 1151 1152 /* 1153 * Set up buffers, so they can be used to read disk labels. 1154 */ 1155 bufinit(); 1156 1157 /* 1158 * Configure the system. 1159 */ 1160 configure(); 1161 1162 /* 1163 * Note that bootstrapping is finished, and set the HWRPB up 1164 * to do restarts. 1165 */ 1166 hwrpb_restart_setup(); 1167 } 1168 1169 /* 1170 * Retrieve the platform name from the DSR. 1171 */ 1172 const char * 1173 alpha_dsr_sysname() 1174 { 1175 struct dsrdb *dsr; 1176 const char *sysname; 1177 1178 /* 1179 * DSR does not exist on early HWRPB versions. 1180 */ 1181 if (hwrpb->rpb_version < HWRPB_DSRDB_MINVERS) 1182 return (NULL); 1183 1184 dsr = (struct dsrdb *)(((caddr_t)hwrpb) + hwrpb->rpb_dsrdb_off); 1185 sysname = (const char *)((caddr_t)dsr + (dsr->dsr_sysname_off + 1186 sizeof(u_int64_t))); 1187 return (sysname); 1188 } 1189 1190 /* 1191 * Lookup the system specified system variation in the provided table, 1192 * returning the model string on match. 1193 */ 1194 const char * 1195 alpha_variation_name(variation, avtp) 1196 u_int64_t variation; 1197 const struct alpha_variation_table *avtp; 1198 { 1199 int i; 1200 1201 for (i = 0; avtp[i].avt_model != NULL; i++) 1202 if (avtp[i].avt_variation == variation) 1203 return (avtp[i].avt_model); 1204 return (NULL); 1205 } 1206 1207 /* 1208 * Generate a default platform name based for unknown system variations. 1209 */ 1210 const char * 1211 alpha_unknown_sysname() 1212 { 1213 static char s[128]; /* safe size */ 1214 1215 sprintf(s, "%s family, unknown model variation 0x%lx", 1216 platform.family, hwrpb->rpb_variation & SV_ST_MASK); 1217 return ((const char *)s); 1218 } 1219 1220 void 1221 identifycpu() 1222 { 1223 1224 /* 1225 * print out CPU identification information. 1226 */ 1227 printf("%s, %ldMHz\n", cpu_model, 1228 hwrpb->rpb_cc_freq / 1000000); /* XXX true for 21164? */ 1229 printf("%ld byte page size, %d processor%s.\n", 1230 hwrpb->rpb_page_size, ncpus, ncpus == 1 ? "" : "s"); 1231 #if 0 1232 /* this isn't defined for any systems that we run on? */ 1233 printf("serial number 0x%lx 0x%lx\n", 1234 ((long *)hwrpb->rpb_ssn)[0], ((long *)hwrpb->rpb_ssn)[1]); 1235 1236 /* and these aren't particularly useful! */ 1237 printf("variation: 0x%lx, revision 0x%lx\n", 1238 hwrpb->rpb_variation, *(long *)hwrpb->rpb_revision); 1239 #endif 1240 } 1241 1242 int waittime = -1; 1243 struct pcb dumppcb; 1244 1245 void 1246 cpu_reboot(howto, bootstr) 1247 int howto; 1248 char *bootstr; 1249 { 1250 extern int cold; 1251 1252 /* If system is cold, just halt. */ 1253 if (cold) { 1254 howto |= RB_HALT; 1255 goto haltsys; 1256 } 1257 1258 /* If "always halt" was specified as a boot flag, obey. */ 1259 if ((boothowto & RB_HALT) != 0) 1260 howto |= RB_HALT; 1261 1262 boothowto = howto; 1263 if ((howto & RB_NOSYNC) == 0 && waittime < 0) { 1264 waittime = 0; 1265 vfs_shutdown(); 1266 /* 1267 * If we've been adjusting the clock, the todr 1268 * will be out of synch; adjust it now. 1269 */ 1270 resettodr(); 1271 } 1272 1273 /* Disable interrupts. */ 1274 splhigh(); 1275 1276 /* If rebooting and a dump is requested do it. */ 1277 #if 0 1278 if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP) 1279 #else 1280 if (howto & RB_DUMP) 1281 #endif 1282 dumpsys(); 1283 1284 haltsys: 1285 1286 /* run any shutdown hooks */ 1287 doshutdownhooks(); 1288 1289 #ifdef BOOTKEY 1290 printf("hit any key to %s...\n", howto & RB_HALT ? "halt" : "reboot"); 1291 cnpollc(1); /* for proper keyboard command handling */ 1292 cngetc(); 1293 cnpollc(0); 1294 printf("\n"); 1295 #endif 1296 1297 /* Finally, powerdown/halt/reboot the system. */ 1298 if ((howto && RB_POWERDOWN) == RB_POWERDOWN && 1299 platform.powerdown != NULL) { 1300 (*platform.powerdown)(); 1301 printf("WARNING: powerdown failed!\n"); 1302 } 1303 printf("%s\n\n", howto & RB_HALT ? "halted." : "rebooting..."); 1304 prom_halt(howto & RB_HALT); 1305 /*NOTREACHED*/ 1306 } 1307 1308 /* 1309 * These variables are needed by /sbin/savecore 1310 */ 1311 u_long dumpmag = 0x8fca0101; /* magic number */ 1312 int dumpsize = 0; /* pages */ 1313 long dumplo = 0; /* blocks */ 1314 1315 /* 1316 * cpu_dumpsize: calculate size of machine-dependent kernel core dump headers. 1317 */ 1318 int 1319 cpu_dumpsize() 1320 { 1321 int size; 1322 1323 size = ALIGN(sizeof(kcore_seg_t)) + ALIGN(sizeof(cpu_kcore_hdr_t)) + 1324 ALIGN(mem_cluster_cnt * sizeof(phys_ram_seg_t)); 1325 if (roundup(size, dbtob(1)) != dbtob(1)) 1326 return -1; 1327 1328 return (1); 1329 } 1330 1331 /* 1332 * cpu_dump_mempagecnt: calculate size of RAM (in pages) to be dumped. 1333 */ 1334 u_long 1335 cpu_dump_mempagecnt() 1336 { 1337 u_long i, n; 1338 1339 n = 0; 1340 for (i = 0; i < mem_cluster_cnt; i++) 1341 n += atop(mem_clusters[i].size); 1342 return (n); 1343 } 1344 1345 /* 1346 * cpu_dump: dump machine-dependent kernel core dump headers. 1347 */ 1348 int 1349 cpu_dump() 1350 { 1351 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1352 char buf[dbtob(1)]; 1353 kcore_seg_t *segp; 1354 cpu_kcore_hdr_t *cpuhdrp; 1355 phys_ram_seg_t *memsegp; 1356 int i; 1357 1358 dump = bdevsw[major(dumpdev)].d_dump; 1359 1360 bzero(buf, sizeof buf); 1361 segp = (kcore_seg_t *)buf; 1362 cpuhdrp = (cpu_kcore_hdr_t *)&buf[ALIGN(sizeof(*segp))]; 1363 memsegp = (phys_ram_seg_t *)&buf[ ALIGN(sizeof(*segp)) + 1364 ALIGN(sizeof(*cpuhdrp))]; 1365 1366 /* 1367 * Generate a segment header. 1368 */ 1369 CORE_SETMAGIC(*segp, KCORE_MAGIC, MID_MACHINE, CORE_CPU); 1370 segp->c_size = dbtob(1) - ALIGN(sizeof(*segp)); 1371 1372 /* 1373 * Add the machine-dependent header info. 1374 */ 1375 cpuhdrp->lev1map_pa = ALPHA_K0SEG_TO_PHYS((vm_offset_t)kernel_lev1map); 1376 cpuhdrp->page_size = PAGE_SIZE; 1377 cpuhdrp->nmemsegs = mem_cluster_cnt; 1378 1379 /* 1380 * Fill in the memory segment descriptors. 1381 */ 1382 for (i = 0; i < mem_cluster_cnt; i++) { 1383 memsegp[i].start = mem_clusters[i].start; 1384 memsegp[i].size = mem_clusters[i].size & ~PAGE_MASK; 1385 } 1386 1387 return (dump(dumpdev, dumplo, (caddr_t)buf, dbtob(1))); 1388 } 1389 1390 /* 1391 * This is called by main to set dumplo and dumpsize. 1392 * Dumps always skip the first CLBYTES of disk space 1393 * in case there might be a disk label stored there. 1394 * If there is extra space, put dump at the end to 1395 * reduce the chance that swapping trashes it. 1396 */ 1397 void 1398 cpu_dumpconf() 1399 { 1400 int nblks, dumpblks; /* size of dump area */ 1401 int maj; 1402 1403 if (dumpdev == NODEV) 1404 goto bad; 1405 maj = major(dumpdev); 1406 if (maj < 0 || maj >= nblkdev) 1407 panic("dumpconf: bad dumpdev=0x%x", dumpdev); 1408 if (bdevsw[maj].d_psize == NULL) 1409 goto bad; 1410 nblks = (*bdevsw[maj].d_psize)(dumpdev); 1411 if (nblks <= ctod(1)) 1412 goto bad; 1413 1414 dumpblks = cpu_dumpsize(); 1415 if (dumpblks < 0) 1416 goto bad; 1417 dumpblks += ctod(cpu_dump_mempagecnt()); 1418 1419 /* If dump won't fit (incl. room for possible label), punt. */ 1420 if (dumpblks > (nblks - ctod(1))) 1421 goto bad; 1422 1423 /* Put dump at end of partition */ 1424 dumplo = nblks - dumpblks; 1425 1426 /* dumpsize is in page units, and doesn't include headers. */ 1427 dumpsize = cpu_dump_mempagecnt(); 1428 return; 1429 1430 bad: 1431 dumpsize = 0; 1432 return; 1433 } 1434 1435 /* 1436 * Dump the kernel's image to the swap partition. 1437 */ 1438 #define BYTES_PER_DUMP NBPG 1439 1440 void 1441 dumpsys() 1442 { 1443 u_long totalbytesleft, bytes, i, n, memcl; 1444 u_long maddr; 1445 int psize; 1446 daddr_t blkno; 1447 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1448 int error; 1449 1450 /* Save registers. */ 1451 savectx(&dumppcb); 1452 1453 msgbufenabled = 0; /* don't record dump msgs in msgbuf */ 1454 if (dumpdev == NODEV) 1455 return; 1456 1457 /* 1458 * For dumps during autoconfiguration, 1459 * if dump device has already configured... 1460 */ 1461 if (dumpsize == 0) 1462 cpu_dumpconf(); 1463 if (dumplo <= 0) { 1464 printf("\ndump to dev %u,%u not possible\n", major(dumpdev), 1465 minor(dumpdev)); 1466 return; 1467 } 1468 printf("\ndumping to dev %u,%u offset %ld\n", major(dumpdev), 1469 minor(dumpdev), dumplo); 1470 1471 psize = (*bdevsw[major(dumpdev)].d_psize)(dumpdev); 1472 printf("dump "); 1473 if (psize == -1) { 1474 printf("area unavailable\n"); 1475 return; 1476 } 1477 1478 /* XXX should purge all outstanding keystrokes. */ 1479 1480 if ((error = cpu_dump()) != 0) 1481 goto err; 1482 1483 totalbytesleft = ptoa(cpu_dump_mempagecnt()); 1484 blkno = dumplo + cpu_dumpsize(); 1485 dump = bdevsw[major(dumpdev)].d_dump; 1486 error = 0; 1487 1488 for (memcl = 0; memcl < mem_cluster_cnt; memcl++) { 1489 maddr = mem_clusters[memcl].start; 1490 bytes = mem_clusters[memcl].size & ~PAGE_MASK; 1491 1492 for (i = 0; i < bytes; i += n, totalbytesleft -= n) { 1493 1494 /* Print out how many MBs we to go. */ 1495 if ((totalbytesleft % (1024*1024)) == 0) 1496 printf("%d ", totalbytesleft / (1024 * 1024)); 1497 1498 /* Limit size for next transfer. */ 1499 n = bytes - i; 1500 if (n > BYTES_PER_DUMP) 1501 n = BYTES_PER_DUMP; 1502 1503 error = (*dump)(dumpdev, blkno, 1504 (caddr_t)ALPHA_PHYS_TO_K0SEG(maddr), n); 1505 if (error) 1506 goto err; 1507 maddr += n; 1508 blkno += btodb(n); /* XXX? */ 1509 1510 /* XXX should look for keystrokes, to cancel. */ 1511 } 1512 } 1513 1514 err: 1515 switch (error) { 1516 1517 case ENXIO: 1518 printf("device bad\n"); 1519 break; 1520 1521 case EFAULT: 1522 printf("device not ready\n"); 1523 break; 1524 1525 case EINVAL: 1526 printf("area improper\n"); 1527 break; 1528 1529 case EIO: 1530 printf("i/o error\n"); 1531 break; 1532 1533 case EINTR: 1534 printf("aborted from console\n"); 1535 break; 1536 1537 case 0: 1538 printf("succeeded\n"); 1539 break; 1540 1541 default: 1542 printf("error %d\n", error); 1543 break; 1544 } 1545 printf("\n\n"); 1546 delay(1000); 1547 } 1548 1549 void 1550 frametoreg(framep, regp) 1551 struct trapframe *framep; 1552 struct reg *regp; 1553 { 1554 1555 regp->r_regs[R_V0] = framep->tf_regs[FRAME_V0]; 1556 regp->r_regs[R_T0] = framep->tf_regs[FRAME_T0]; 1557 regp->r_regs[R_T1] = framep->tf_regs[FRAME_T1]; 1558 regp->r_regs[R_T2] = framep->tf_regs[FRAME_T2]; 1559 regp->r_regs[R_T3] = framep->tf_regs[FRAME_T3]; 1560 regp->r_regs[R_T4] = framep->tf_regs[FRAME_T4]; 1561 regp->r_regs[R_T5] = framep->tf_regs[FRAME_T5]; 1562 regp->r_regs[R_T6] = framep->tf_regs[FRAME_T6]; 1563 regp->r_regs[R_T7] = framep->tf_regs[FRAME_T7]; 1564 regp->r_regs[R_S0] = framep->tf_regs[FRAME_S0]; 1565 regp->r_regs[R_S1] = framep->tf_regs[FRAME_S1]; 1566 regp->r_regs[R_S2] = framep->tf_regs[FRAME_S2]; 1567 regp->r_regs[R_S3] = framep->tf_regs[FRAME_S3]; 1568 regp->r_regs[R_S4] = framep->tf_regs[FRAME_S4]; 1569 regp->r_regs[R_S5] = framep->tf_regs[FRAME_S5]; 1570 regp->r_regs[R_S6] = framep->tf_regs[FRAME_S6]; 1571 regp->r_regs[R_A0] = framep->tf_regs[FRAME_A0]; 1572 regp->r_regs[R_A1] = framep->tf_regs[FRAME_A1]; 1573 regp->r_regs[R_A2] = framep->tf_regs[FRAME_A2]; 1574 regp->r_regs[R_A3] = framep->tf_regs[FRAME_A3]; 1575 regp->r_regs[R_A4] = framep->tf_regs[FRAME_A4]; 1576 regp->r_regs[R_A5] = framep->tf_regs[FRAME_A5]; 1577 regp->r_regs[R_T8] = framep->tf_regs[FRAME_T8]; 1578 regp->r_regs[R_T9] = framep->tf_regs[FRAME_T9]; 1579 regp->r_regs[R_T10] = framep->tf_regs[FRAME_T10]; 1580 regp->r_regs[R_T11] = framep->tf_regs[FRAME_T11]; 1581 regp->r_regs[R_RA] = framep->tf_regs[FRAME_RA]; 1582 regp->r_regs[R_T12] = framep->tf_regs[FRAME_T12]; 1583 regp->r_regs[R_AT] = framep->tf_regs[FRAME_AT]; 1584 regp->r_regs[R_GP] = framep->tf_regs[FRAME_GP]; 1585 /* regp->r_regs[R_SP] = framep->tf_regs[FRAME_SP]; XXX */ 1586 regp->r_regs[R_ZERO] = 0; 1587 } 1588 1589 void 1590 regtoframe(regp, framep) 1591 struct reg *regp; 1592 struct trapframe *framep; 1593 { 1594 1595 framep->tf_regs[FRAME_V0] = regp->r_regs[R_V0]; 1596 framep->tf_regs[FRAME_T0] = regp->r_regs[R_T0]; 1597 framep->tf_regs[FRAME_T1] = regp->r_regs[R_T1]; 1598 framep->tf_regs[FRAME_T2] = regp->r_regs[R_T2]; 1599 framep->tf_regs[FRAME_T3] = regp->r_regs[R_T3]; 1600 framep->tf_regs[FRAME_T4] = regp->r_regs[R_T4]; 1601 framep->tf_regs[FRAME_T5] = regp->r_regs[R_T5]; 1602 framep->tf_regs[FRAME_T6] = regp->r_regs[R_T6]; 1603 framep->tf_regs[FRAME_T7] = regp->r_regs[R_T7]; 1604 framep->tf_regs[FRAME_S0] = regp->r_regs[R_S0]; 1605 framep->tf_regs[FRAME_S1] = regp->r_regs[R_S1]; 1606 framep->tf_regs[FRAME_S2] = regp->r_regs[R_S2]; 1607 framep->tf_regs[FRAME_S3] = regp->r_regs[R_S3]; 1608 framep->tf_regs[FRAME_S4] = regp->r_regs[R_S4]; 1609 framep->tf_regs[FRAME_S5] = regp->r_regs[R_S5]; 1610 framep->tf_regs[FRAME_S6] = regp->r_regs[R_S6]; 1611 framep->tf_regs[FRAME_A0] = regp->r_regs[R_A0]; 1612 framep->tf_regs[FRAME_A1] = regp->r_regs[R_A1]; 1613 framep->tf_regs[FRAME_A2] = regp->r_regs[R_A2]; 1614 framep->tf_regs[FRAME_A3] = regp->r_regs[R_A3]; 1615 framep->tf_regs[FRAME_A4] = regp->r_regs[R_A4]; 1616 framep->tf_regs[FRAME_A5] = regp->r_regs[R_A5]; 1617 framep->tf_regs[FRAME_T8] = regp->r_regs[R_T8]; 1618 framep->tf_regs[FRAME_T9] = regp->r_regs[R_T9]; 1619 framep->tf_regs[FRAME_T10] = regp->r_regs[R_T10]; 1620 framep->tf_regs[FRAME_T11] = regp->r_regs[R_T11]; 1621 framep->tf_regs[FRAME_RA] = regp->r_regs[R_RA]; 1622 framep->tf_regs[FRAME_T12] = regp->r_regs[R_T12]; 1623 framep->tf_regs[FRAME_AT] = regp->r_regs[R_AT]; 1624 framep->tf_regs[FRAME_GP] = regp->r_regs[R_GP]; 1625 /* framep->tf_regs[FRAME_SP] = regp->r_regs[R_SP]; XXX */ 1626 /* ??? = regp->r_regs[R_ZERO]; */ 1627 } 1628 1629 void 1630 printregs(regp) 1631 struct reg *regp; 1632 { 1633 int i; 1634 1635 for (i = 0; i < 32; i++) 1636 printf("R%d:\t0x%016lx%s", i, regp->r_regs[i], 1637 i & 1 ? "\n" : "\t"); 1638 } 1639 1640 void 1641 regdump(framep) 1642 struct trapframe *framep; 1643 { 1644 struct reg reg; 1645 1646 frametoreg(framep, ®); 1647 reg.r_regs[R_SP] = alpha_pal_rdusp(); 1648 1649 printf("REGISTERS:\n"); 1650 printregs(®); 1651 } 1652 1653 #ifdef DEBUG 1654 int sigdebug = 0; 1655 int sigpid = 0; 1656 #define SDB_FOLLOW 0x01 1657 #define SDB_KSTACK 0x02 1658 #endif 1659 1660 /* 1661 * Send an interrupt to process. 1662 */ 1663 void 1664 sendsig(catcher, sig, mask, code) 1665 sig_t catcher; 1666 int sig, mask; 1667 u_long code; 1668 { 1669 struct proc *p = curproc; 1670 struct sigcontext *scp, ksc; 1671 struct trapframe *frame; 1672 struct sigacts *psp = p->p_sigacts; 1673 int oonstack, fsize, rndfsize; 1674 extern char sigcode[], esigcode[]; 1675 extern struct proc *fpcurproc; 1676 1677 frame = p->p_md.md_tf; 1678 oonstack = psp->ps_sigstk.ss_flags & SS_ONSTACK; 1679 fsize = sizeof ksc; 1680 rndfsize = ((fsize + 15) / 16) * 16; 1681 /* 1682 * Allocate and validate space for the signal handler 1683 * context. Note that if the stack is in P0 space, the 1684 * call to grow() is a nop, and the useracc() check 1685 * will fail if the process has not already allocated 1686 * the space with a `brk'. 1687 */ 1688 if ((psp->ps_flags & SAS_ALTSTACK) && !oonstack && 1689 (psp->ps_sigonstack & sigmask(sig))) { 1690 scp = (struct sigcontext *)((caddr_t)psp->ps_sigstk.ss_sp + 1691 psp->ps_sigstk.ss_size - rndfsize); 1692 psp->ps_sigstk.ss_flags |= SS_ONSTACK; 1693 } else 1694 scp = (struct sigcontext *)(alpha_pal_rdusp() - rndfsize); 1695 if ((u_long)scp <= USRSTACK - ctob(p->p_vmspace->vm_ssize)) 1696 #if defined(UVM) 1697 (void)uvm_grow(p, (u_long)scp); 1698 #else 1699 (void)grow(p, (u_long)scp); 1700 #endif 1701 #ifdef DEBUG 1702 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1703 printf("sendsig(%d): sig %d ssp %p usp %p\n", p->p_pid, 1704 sig, &oonstack, scp); 1705 #endif 1706 #if defined(UVM) 1707 if (uvm_useracc((caddr_t)scp, fsize, B_WRITE) == 0) { 1708 #else 1709 if (useracc((caddr_t)scp, fsize, B_WRITE) == 0) { 1710 #endif 1711 #ifdef DEBUG 1712 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1713 printf("sendsig(%d): useracc failed on sig %d\n", 1714 p->p_pid, sig); 1715 #endif 1716 /* 1717 * Process has trashed its stack; give it an illegal 1718 * instruction to halt it in its tracks. 1719 */ 1720 SIGACTION(p, SIGILL) = SIG_DFL; 1721 sig = sigmask(SIGILL); 1722 p->p_sigignore &= ~sig; 1723 p->p_sigcatch &= ~sig; 1724 p->p_sigmask &= ~sig; 1725 psignal(p, SIGILL); 1726 return; 1727 #if !defined(UVM) /* this construct will balance braces for ctags(1) */ 1728 } 1729 #else 1730 } 1731 #endif 1732 1733 /* 1734 * Build the signal context to be used by sigreturn. 1735 */ 1736 ksc.sc_onstack = oonstack; 1737 ksc.sc_mask = mask; 1738 ksc.sc_pc = frame->tf_regs[FRAME_PC]; 1739 ksc.sc_ps = frame->tf_regs[FRAME_PS]; 1740 1741 /* copy the registers. */ 1742 frametoreg(frame, (struct reg *)ksc.sc_regs); 1743 ksc.sc_regs[R_ZERO] = 0xACEDBADE; /* magic number */ 1744 ksc.sc_regs[R_SP] = alpha_pal_rdusp(); 1745 1746 /* save the floating-point state, if necessary, then copy it. */ 1747 if (p == fpcurproc) { 1748 alpha_pal_wrfen(1); 1749 savefpstate(&p->p_addr->u_pcb.pcb_fp); 1750 alpha_pal_wrfen(0); 1751 fpcurproc = NULL; 1752 } 1753 ksc.sc_ownedfp = p->p_md.md_flags & MDP_FPUSED; 1754 bcopy(&p->p_addr->u_pcb.pcb_fp, (struct fpreg *)ksc.sc_fpregs, 1755 sizeof(struct fpreg)); 1756 ksc.sc_fp_control = 0; /* XXX ? */ 1757 bzero(ksc.sc_reserved, sizeof ksc.sc_reserved); /* XXX */ 1758 bzero(ksc.sc_xxx, sizeof ksc.sc_xxx); /* XXX */ 1759 1760 1761 #ifdef COMPAT_OSF1 1762 /* 1763 * XXX Create an OSF/1-style sigcontext and associated goo. 1764 */ 1765 #endif 1766 1767 /* 1768 * copy the frame out to userland. 1769 */ 1770 (void) copyout((caddr_t)&ksc, (caddr_t)scp, fsize); 1771 #ifdef DEBUG 1772 if (sigdebug & SDB_FOLLOW) 1773 printf("sendsig(%d): sig %d scp %p code %lx\n", p->p_pid, sig, 1774 scp, code); 1775 #endif 1776 1777 /* 1778 * Set up the registers to return to sigcode. 1779 */ 1780 frame->tf_regs[FRAME_PC] = 1781 (u_int64_t)PS_STRINGS - (esigcode - sigcode); 1782 frame->tf_regs[FRAME_A0] = sig; 1783 frame->tf_regs[FRAME_A1] = code; 1784 frame->tf_regs[FRAME_A2] = (u_int64_t)scp; 1785 frame->tf_regs[FRAME_T12] = (u_int64_t)catcher; /* t12 is pv */ 1786 alpha_pal_wrusp((unsigned long)scp); 1787 1788 #ifdef DEBUG 1789 if (sigdebug & SDB_FOLLOW) 1790 printf("sendsig(%d): pc %lx, catcher %lx\n", p->p_pid, 1791 frame->tf_regs[FRAME_PC], frame->tf_regs[FRAME_A3]); 1792 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1793 printf("sendsig(%d): sig %d returns\n", 1794 p->p_pid, sig); 1795 #endif 1796 } 1797 1798 /* 1799 * System call to cleanup state after a signal 1800 * has been taken. Reset signal mask and 1801 * stack state from context left by sendsig (above). 1802 * Return to previous pc and psl as specified by 1803 * context left by sendsig. Check carefully to 1804 * make sure that the user has not modified the 1805 * psl to gain improper priviledges or to cause 1806 * a machine fault. 1807 */ 1808 /* ARGSUSED */ 1809 int 1810 sys_sigreturn(p, v, retval) 1811 struct proc *p; 1812 void *v; 1813 register_t *retval; 1814 { 1815 struct sys_sigreturn_args /* { 1816 syscallarg(struct sigcontext *) sigcntxp; 1817 } */ *uap = v; 1818 struct sigcontext *scp, ksc; 1819 extern struct proc *fpcurproc; 1820 1821 scp = SCARG(uap, sigcntxp); 1822 #ifdef DEBUG 1823 if (sigdebug & SDB_FOLLOW) 1824 printf("sigreturn: pid %d, scp %p\n", p->p_pid, scp); 1825 #endif 1826 1827 if (ALIGN(scp) != (u_int64_t)scp) 1828 return (EINVAL); 1829 1830 /* 1831 * Test and fetch the context structure. 1832 * We grab it all at once for speed. 1833 */ 1834 #if defined(UVM) 1835 if (uvm_useracc((caddr_t)scp, sizeof (*scp), B_WRITE) == 0 || 1836 copyin((caddr_t)scp, (caddr_t)&ksc, sizeof ksc)) 1837 return (EINVAL); 1838 #else 1839 if (useracc((caddr_t)scp, sizeof (*scp), B_WRITE) == 0 || 1840 copyin((caddr_t)scp, (caddr_t)&ksc, sizeof ksc)) 1841 return (EINVAL); 1842 #endif 1843 1844 if (ksc.sc_regs[R_ZERO] != 0xACEDBADE) /* magic number */ 1845 return (EINVAL); 1846 /* 1847 * Restore the user-supplied information 1848 */ 1849 if (ksc.sc_onstack) 1850 p->p_sigacts->ps_sigstk.ss_flags |= SS_ONSTACK; 1851 else 1852 p->p_sigacts->ps_sigstk.ss_flags &= ~SS_ONSTACK; 1853 p->p_sigmask = ksc.sc_mask &~ sigcantmask; 1854 1855 p->p_md.md_tf->tf_regs[FRAME_PC] = ksc.sc_pc; 1856 p->p_md.md_tf->tf_regs[FRAME_PS] = 1857 (ksc.sc_ps | ALPHA_PSL_USERSET) & ~ALPHA_PSL_USERCLR; 1858 1859 regtoframe((struct reg *)ksc.sc_regs, p->p_md.md_tf); 1860 alpha_pal_wrusp(ksc.sc_regs[R_SP]); 1861 1862 /* XXX ksc.sc_ownedfp ? */ 1863 if (p == fpcurproc) 1864 fpcurproc = NULL; 1865 bcopy((struct fpreg *)ksc.sc_fpregs, &p->p_addr->u_pcb.pcb_fp, 1866 sizeof(struct fpreg)); 1867 /* XXX ksc.sc_fp_control ? */ 1868 1869 #ifdef DEBUG 1870 if (sigdebug & SDB_FOLLOW) 1871 printf("sigreturn(%d): returns\n", p->p_pid); 1872 #endif 1873 return (EJUSTRETURN); 1874 } 1875 1876 /* 1877 * machine dependent system variables. 1878 */ 1879 int 1880 cpu_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 1881 int *name; 1882 u_int namelen; 1883 void *oldp; 1884 size_t *oldlenp; 1885 void *newp; 1886 size_t newlen; 1887 struct proc *p; 1888 { 1889 dev_t consdev; 1890 1891 /* all sysctl names at this level are terminal */ 1892 if (namelen != 1) 1893 return (ENOTDIR); /* overloaded */ 1894 1895 switch (name[0]) { 1896 case CPU_CONSDEV: 1897 if (cn_tab != NULL) 1898 consdev = cn_tab->cn_dev; 1899 else 1900 consdev = NODEV; 1901 return (sysctl_rdstruct(oldp, oldlenp, newp, &consdev, 1902 sizeof consdev)); 1903 1904 case CPU_ROOT_DEVICE: 1905 return (sysctl_rdstring(oldp, oldlenp, newp, 1906 root_device->dv_xname)); 1907 1908 case CPU_UNALIGNED_PRINT: 1909 return (sysctl_int(oldp, oldlenp, newp, newlen, 1910 &alpha_unaligned_print)); 1911 1912 case CPU_UNALIGNED_FIX: 1913 return (sysctl_int(oldp, oldlenp, newp, newlen, 1914 &alpha_unaligned_fix)); 1915 1916 case CPU_UNALIGNED_SIGBUS: 1917 return (sysctl_int(oldp, oldlenp, newp, newlen, 1918 &alpha_unaligned_sigbus)); 1919 1920 case CPU_BOOTED_KERNEL: 1921 return (sysctl_rdstring(oldp, oldlenp, newp, 1922 bootinfo.booted_kernel)); 1923 1924 default: 1925 return (EOPNOTSUPP); 1926 } 1927 /* NOTREACHED */ 1928 } 1929 1930 /* 1931 * Set registers on exec. 1932 */ 1933 void 1934 setregs(p, pack, stack) 1935 register struct proc *p; 1936 struct exec_package *pack; 1937 u_long stack; 1938 { 1939 struct trapframe *tfp = p->p_md.md_tf; 1940 extern struct proc *fpcurproc; 1941 #ifdef DEBUG 1942 int i; 1943 #endif 1944 1945 #ifdef DEBUG 1946 /* 1947 * Crash and dump, if the user requested it. 1948 */ 1949 if (boothowto & RB_DUMP) 1950 panic("crash requested by boot flags"); 1951 #endif 1952 1953 #ifdef DEBUG 1954 for (i = 0; i < FRAME_SIZE; i++) 1955 tfp->tf_regs[i] = 0xbabefacedeadbeef; 1956 #else 1957 bzero(tfp->tf_regs, FRAME_SIZE * sizeof tfp->tf_regs[0]); 1958 #endif 1959 bzero(&p->p_addr->u_pcb.pcb_fp, sizeof p->p_addr->u_pcb.pcb_fp); 1960 #define FP_RN 2 /* XXX */ 1961 p->p_addr->u_pcb.pcb_fp.fpr_cr = (long)FP_RN << 58; 1962 alpha_pal_wrusp(stack); 1963 tfp->tf_regs[FRAME_PS] = ALPHA_PSL_USERSET; 1964 tfp->tf_regs[FRAME_PC] = pack->ep_entry & ~3; 1965 1966 tfp->tf_regs[FRAME_A0] = stack; /* a0 = sp */ 1967 tfp->tf_regs[FRAME_A1] = 0; /* a1 = rtld cleanup */ 1968 tfp->tf_regs[FRAME_A2] = 0; /* a2 = rtld object */ 1969 tfp->tf_regs[FRAME_A3] = (u_int64_t)PS_STRINGS; /* a3 = ps_strings */ 1970 tfp->tf_regs[FRAME_T12] = tfp->tf_regs[FRAME_PC]; /* a.k.a. PV */ 1971 1972 p->p_md.md_flags &= ~MDP_FPUSED; 1973 if (fpcurproc == p) 1974 fpcurproc = NULL; 1975 } 1976 1977 void 1978 netintr() 1979 { 1980 int n, s; 1981 1982 s = splhigh(); 1983 n = netisr; 1984 netisr = 0; 1985 splx(s); 1986 1987 #define DONETISR(bit, fn) \ 1988 do { \ 1989 if (n & (1 << (bit))) \ 1990 fn; \ 1991 } while (0) 1992 1993 #ifdef INET 1994 #if NARP > 0 1995 DONETISR(NETISR_ARP, arpintr()); 1996 #endif 1997 DONETISR(NETISR_IP, ipintr()); 1998 #endif 1999 #ifdef NETATALK 2000 DONETISR(NETISR_ATALK, atintr()); 2001 #endif 2002 #ifdef NS 2003 DONETISR(NETISR_NS, nsintr()); 2004 #endif 2005 #ifdef ISO 2006 DONETISR(NETISR_ISO, clnlintr()); 2007 #endif 2008 #ifdef CCITT 2009 DONETISR(NETISR_CCITT, ccittintr()); 2010 #endif 2011 #ifdef NATM 2012 DONETISR(NETISR_NATM, natmintr()); 2013 #endif 2014 #if NPPP > 1 2015 DONETISR(NETISR_PPP, pppintr()); 2016 #endif 2017 2018 #undef DONETISR 2019 } 2020 2021 void 2022 do_sir() 2023 { 2024 u_int64_t n; 2025 2026 do { 2027 (void)splhigh(); 2028 n = ssir; 2029 ssir = 0; 2030 splsoft(); /* don't recurse through spl0() */ 2031 2032 #if defined(UVM) 2033 #define COUNT_SOFT uvmexp.softs++ 2034 #else 2035 #define COUNT_SOFT cnt.v_soft++ 2036 #endif 2037 2038 #define DO_SIR(bit, fn) \ 2039 do { \ 2040 if (n & (bit)) { \ 2041 COUNT_SOFT; \ 2042 fn; \ 2043 } \ 2044 } while (0) 2045 2046 DO_SIR(SIR_NET, netintr()); 2047 DO_SIR(SIR_CLOCK, softclock()); 2048 2049 #undef COUNT_SOFT 2050 #undef DO_SIR 2051 } while (ssir != 0); 2052 } 2053 2054 int 2055 spl0() 2056 { 2057 2058 if (ssir) 2059 do_sir(); /* it lowers the IPL itself */ 2060 2061 return (alpha_pal_swpipl(ALPHA_PSL_IPL_0)); 2062 } 2063 2064 /* 2065 * The following primitives manipulate the run queues. _whichqs tells which 2066 * of the 32 queues _qs have processes in them. Setrunqueue puts processes 2067 * into queues, Remrunqueue removes them from queues. The running process is 2068 * on no queue, other processes are on a queue related to p->p_priority, 2069 * divided by 4 actually to shrink the 0-127 range of priorities into the 32 2070 * available queues. 2071 */ 2072 /* 2073 * setrunqueue(p) 2074 * proc *p; 2075 * 2076 * Call should be made at splclock(), and p->p_stat should be SRUN. 2077 */ 2078 2079 void 2080 setrunqueue(p) 2081 struct proc *p; 2082 { 2083 int bit; 2084 2085 /* firewall: p->p_back must be NULL */ 2086 if (p->p_back != NULL) 2087 panic("setrunqueue"); 2088 2089 bit = p->p_priority >> 2; 2090 whichqs |= (1 << bit); 2091 p->p_forw = (struct proc *)&qs[bit]; 2092 p->p_back = qs[bit].ph_rlink; 2093 p->p_back->p_forw = p; 2094 qs[bit].ph_rlink = p; 2095 } 2096 2097 /* 2098 * remrunqueue(p) 2099 * 2100 * Call should be made at splclock(). 2101 */ 2102 void 2103 remrunqueue(p) 2104 struct proc *p; 2105 { 2106 int bit; 2107 2108 bit = p->p_priority >> 2; 2109 if ((whichqs & (1 << bit)) == 0) 2110 panic("remrunqueue"); 2111 2112 p->p_back->p_forw = p->p_forw; 2113 p->p_forw->p_back = p->p_back; 2114 p->p_back = NULL; /* for firewall checking. */ 2115 2116 if ((struct proc *)&qs[bit] == qs[bit].ph_link) 2117 whichqs &= ~(1 << bit); 2118 } 2119 2120 /* 2121 * Return the best possible estimate of the time in the timeval 2122 * to which tvp points. Unfortunately, we can't read the hardware registers. 2123 * We guarantee that the time will be greater than the value obtained by a 2124 * previous call. 2125 */ 2126 void 2127 microtime(tvp) 2128 register struct timeval *tvp; 2129 { 2130 int s = splclock(); 2131 static struct timeval lasttime; 2132 2133 *tvp = time; 2134 #ifdef notdef 2135 tvp->tv_usec += clkread(); 2136 while (tvp->tv_usec > 1000000) { 2137 tvp->tv_sec++; 2138 tvp->tv_usec -= 1000000; 2139 } 2140 #endif 2141 if (tvp->tv_sec == lasttime.tv_sec && 2142 tvp->tv_usec <= lasttime.tv_usec && 2143 (tvp->tv_usec = lasttime.tv_usec + 1) > 1000000) { 2144 tvp->tv_sec++; 2145 tvp->tv_usec -= 1000000; 2146 } 2147 lasttime = *tvp; 2148 splx(s); 2149 } 2150 2151 /* 2152 * Wait "n" microseconds. 2153 */ 2154 void 2155 delay(n) 2156 unsigned long n; 2157 { 2158 long N = cycles_per_usec * (n); 2159 2160 while (N > 0) /* XXX */ 2161 N -= 3; /* XXX */ 2162 } 2163 2164 #if defined(COMPAT_OSF1) || 1 /* XXX */ 2165 void cpu_exec_ecoff_setregs __P((struct proc *, struct exec_package *, 2166 u_long)); 2167 2168 void 2169 cpu_exec_ecoff_setregs(p, epp, stack) 2170 struct proc *p; 2171 struct exec_package *epp; 2172 u_long stack; 2173 { 2174 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2175 2176 setregs(p, epp, stack); 2177 p->p_md.md_tf->tf_regs[FRAME_GP] = execp->a.gp_value; 2178 } 2179 2180 /* 2181 * cpu_exec_ecoff_hook(): 2182 * cpu-dependent ECOFF format hook for execve(). 2183 * 2184 * Do any machine-dependent diddling of the exec package when doing ECOFF. 2185 * 2186 */ 2187 int 2188 cpu_exec_ecoff_hook(p, epp) 2189 struct proc *p; 2190 struct exec_package *epp; 2191 { 2192 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2193 extern struct emul emul_netbsd; 2194 #ifdef COMPAT_OSF1 2195 extern struct emul emul_osf1; 2196 #endif 2197 2198 switch (execp->f.f_magic) { 2199 #ifdef COMPAT_OSF1 2200 case ECOFF_MAGIC_ALPHA: 2201 epp->ep_emul = &emul_osf1; 2202 break; 2203 #endif 2204 2205 case ECOFF_MAGIC_NETBSD_ALPHA: 2206 epp->ep_emul = &emul_netbsd; 2207 break; 2208 2209 default: 2210 return ENOEXEC; 2211 } 2212 return 0; 2213 } 2214 #endif 2215 2216 int 2217 alpha_pa_access(pa) 2218 u_long pa; 2219 { 2220 int i; 2221 2222 for (i = 0; i < mem_cluster_cnt; i++) { 2223 if (pa < mem_clusters[i].start) 2224 continue; 2225 if ((pa - mem_clusters[i].start) >= 2226 (mem_clusters[i].size & ~PAGE_MASK)) 2227 continue; 2228 return (mem_clusters[i].size & PAGE_MASK); /* prot */ 2229 } 2230 return (PROT_NONE); 2231 } 2232 2233 /* XXX XXX BEGIN XXX XXX */ 2234 vm_offset_t alpha_XXX_dmamap_or; /* XXX */ 2235 /* XXX */ 2236 vm_offset_t /* XXX */ 2237 alpha_XXX_dmamap(v) /* XXX */ 2238 vm_offset_t v; /* XXX */ 2239 { /* XXX */ 2240 /* XXX */ 2241 return (vtophys(v) | alpha_XXX_dmamap_or); /* XXX */ 2242 } /* XXX */ 2243 /* XXX XXX END XXX XXX */ 2244
Indexes created Thu Oct 02 14:10:14 GMT 2025