machdep.c revision 1.125
1 /* $NetBSD: machdep.c,v 1.125 1998/06/09 09:31:58 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 1.125 1998/06/09 09:31:58 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 = (struct pcs *)((char *)hwrpb + hwrpb->rpb_pcs_off + 889 (i * hwrpb->rpb_pcs_size)); 890 if ((pcsp->pcs_flags & PCS_PP) != 0) 891 ncpus++; 892 } 893 894 /* 895 * Figure out our clock frequency, from RPB fields. 896 */ 897 hz = hwrpb->rpb_intr_freq >> 12; 898 if (!(60 <= hz && hz <= 10240)) { 899 hz = 1024; 900 #ifdef DIAGNOSTIC 901 printf("WARNING: unbelievable rpb_intr_freq: %ld (%d hz)\n", 902 hwrpb->rpb_intr_freq, hz); 903 #endif 904 } 905 906 } 907 908 /* 909 * Allocate space for system data structures. We are given 910 * a starting virtual address and we return a final virtual 911 * address; along the way we set each data structure pointer. 912 * 913 * We call allocsys() with 0 to find out how much space we want, 914 * allocate that much and fill it with zeroes, and the call 915 * allocsys() again with the correct base virtual address. 916 */ 917 caddr_t 918 allocsys(v) 919 caddr_t v; 920 { 921 922 #define valloc(name, type, num) \ 923 (name) = (type *)v; v = (caddr_t)ALIGN((name)+(num)) 924 #ifdef REAL_CLISTS 925 valloc(cfree, struct cblock, nclist); 926 #endif 927 valloc(callout, struct callout, ncallout); 928 #ifdef SYSVSHM 929 valloc(shmsegs, struct shmid_ds, shminfo.shmmni); 930 #endif 931 #ifdef SYSVSEM 932 valloc(sema, struct semid_ds, seminfo.semmni); 933 valloc(sem, struct sem, seminfo.semmns); 934 /* This is pretty disgusting! */ 935 valloc(semu, int, (seminfo.semmnu * seminfo.semusz) / sizeof(int)); 936 #endif 937 #ifdef SYSVMSG 938 valloc(msgpool, char, msginfo.msgmax); 939 valloc(msgmaps, struct msgmap, msginfo.msgseg); 940 valloc(msghdrs, struct msg, msginfo.msgtql); 941 valloc(msqids, struct msqid_ds, msginfo.msgmni); 942 #endif 943 944 /* 945 * Determine how many buffers to allocate. 946 * We allocate 10% of memory for buffer space. Insure a 947 * minimum of 16 buffers. We allocate 1/2 as many swap buffer 948 * headers as file i/o buffers. 949 */ 950 if (bufpages == 0) 951 bufpages = (physmem * 10) / (CLSIZE * 100); 952 if (nbuf == 0) { 953 nbuf = bufpages; 954 if (nbuf < 16) 955 nbuf = 16; 956 } 957 if (nswbuf == 0) { 958 nswbuf = (nbuf / 2) &~ 1; /* force even */ 959 if (nswbuf > 256) 960 nswbuf = 256; /* sanity */ 961 } 962 #if !defined(UVM) 963 valloc(swbuf, struct buf, nswbuf); 964 #endif 965 valloc(buf, struct buf, nbuf); 966 return (v); 967 #undef valloc 968 } 969 970 void 971 consinit() 972 { 973 974 /* 975 * Everything related to console initialization is done 976 * in alpha_init(). 977 */ 978 #if defined(DIAGNOSTIC) && defined(_PMAP_MAY_USE_PROM_CONSOLE) 979 printf("consinit: %susing prom console\n", 980 pmap_uses_prom_console() ? "" : "not "); 981 #endif 982 } 983 984 #include "pckbc.h" 985 #include "pckbd.h" 986 #if (NPCKBC > 0) && (NPCKBD == 0) 987 988 #include <machine/bus.h> 989 #include <dev/isa/pckbcvar.h> 990 991 /* 992 * This is called by the pbkbc driver if no pckbd is configured. 993 * On the i386, it is used to glue in the old, deprecated console 994 * code. On the Alpha, it does nothing. 995 */ 996 int 997 pckbc_machdep_cnattach(kbctag, kbcslot) 998 pckbc_tag_t kbctag; 999 pckbc_slot_t kbcslot; 1000 { 1001 1002 return (ENXIO); 1003 } 1004 #endif /* NPCKBC > 0 && NPCKBD == 0 */ 1005 1006 void 1007 cpu_startup() 1008 { 1009 register unsigned i; 1010 int base, residual; 1011 vm_offset_t minaddr, maxaddr; 1012 vm_size_t size; 1013 #if defined(DEBUG) 1014 extern int pmapdebug; 1015 int opmapdebug = pmapdebug; 1016 1017 pmapdebug = 0; 1018 #endif 1019 1020 /* 1021 * Good {morning,afternoon,evening,night}. 1022 */ 1023 printf(version); 1024 identifycpu(); 1025 printf("real mem = %lu (%lu reserved for PROM, %lu used by NetBSD)\n", 1026 ptoa(totalphysmem), ptoa(resvmem), ptoa(physmem)); 1027 if (unusedmem) 1028 printf("WARNING: unused memory = %d bytes\n", ctob(unusedmem)); 1029 if (unknownmem) 1030 printf("WARNING: %d bytes of memory with unknown purpose\n", 1031 ctob(unknownmem)); 1032 1033 /* 1034 * Allocate virtual address space for file I/O buffers. 1035 * Note they are different than the array of headers, 'buf', 1036 * and usually occupy more virtual memory than physical. 1037 */ 1038 size = MAXBSIZE * nbuf; 1039 #if defined(UVM) 1040 if (uvm_map(kernel_map, (vm_offset_t *) &buffers, round_page(size), 1041 NULL, UVM_UNKNOWN_OFFSET, 1042 UVM_MAPFLAG(UVM_PROT_NONE, UVM_PROT_NONE, UVM_INH_NONE, 1043 UVM_ADV_NORMAL, 0)) != KERN_SUCCESS) 1044 panic("startup: cannot allocate VM for buffers"); 1045 #else 1046 buffer_map = kmem_suballoc(kernel_map, (vm_offset_t *)&buffers, 1047 &maxaddr, size, TRUE); 1048 minaddr = (vm_offset_t)buffers; 1049 if (vm_map_find(buffer_map, vm_object_allocate(size), (vm_offset_t)0, 1050 &minaddr, size, FALSE) != KERN_SUCCESS) 1051 panic("startup: cannot allocate buffers"); 1052 #endif /* UVM */ 1053 base = bufpages / nbuf; 1054 residual = bufpages % nbuf; 1055 for (i = 0; i < nbuf; i++) { 1056 #if defined(UVM) 1057 vm_size_t curbufsize; 1058 vm_offset_t curbuf; 1059 struct vm_page *pg; 1060 1061 /* 1062 * Each buffer has MAXBSIZE bytes of VM space allocated. Of 1063 * that MAXBSIZE space, we allocate and map (base+1) pages 1064 * for the first "residual" buffers, and then we allocate 1065 * "base" pages for the rest. 1066 */ 1067 curbuf = (vm_offset_t) buffers + (i * MAXBSIZE); 1068 curbufsize = CLBYTES * ((i < residual) ? (base+1) : base); 1069 1070 while (curbufsize) { 1071 pg = uvm_pagealloc(NULL, 0, NULL); 1072 if (pg == NULL) 1073 panic("cpu_startup: not enough memory for " 1074 "buffer cache"); 1075 #if defined(PMAP_NEW) 1076 pmap_kenter_pgs(curbuf, &pg, 1); 1077 #else 1078 pmap_enter(kernel_map->pmap, curbuf, 1079 VM_PAGE_TO_PHYS(pg), VM_PROT_ALL, TRUE); 1080 #endif 1081 curbuf += PAGE_SIZE; 1082 curbufsize -= PAGE_SIZE; 1083 } 1084 #else /* ! UVM */ 1085 vm_size_t curbufsize; 1086 vm_offset_t curbuf; 1087 1088 /* 1089 * First <residual> buffers get (base+1) physical pages 1090 * allocated for them. The rest get (base) physical pages. 1091 * 1092 * The rest of each buffer occupies virtual space, 1093 * but has no physical memory allocated for it. 1094 */ 1095 curbuf = (vm_offset_t)buffers + i * MAXBSIZE; 1096 curbufsize = CLBYTES * (i < residual ? base+1 : base); 1097 vm_map_pageable(buffer_map, curbuf, curbuf+curbufsize, FALSE); 1098 vm_map_simplify(buffer_map, curbuf); 1099 #endif /* UVM */ 1100 } 1101 /* 1102 * Allocate a submap for exec arguments. This map effectively 1103 * limits the number of processes exec'ing at any time. 1104 */ 1105 #if defined(UVM) 1106 exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 1107 16 * NCARGS, TRUE, FALSE, NULL); 1108 #else 1109 exec_map = kmem_suballoc(kernel_map, &minaddr, &maxaddr, 1110 16 * NCARGS, TRUE); 1111 #endif 1112 1113 /* 1114 * Allocate a submap for physio 1115 */ 1116 #if defined(UVM) 1117 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 1118 VM_PHYS_SIZE, TRUE, FALSE, NULL); 1119 #else 1120 phys_map = kmem_suballoc(kernel_map, &minaddr, &maxaddr, 1121 VM_PHYS_SIZE, TRUE); 1122 #endif 1123 1124 /* 1125 * Finally, allocate mbuf cluster submap. 1126 */ 1127 #if defined(UVM) 1128 mb_map = uvm_km_suballoc(kernel_map, (vm_offset_t *)&mbutl, &maxaddr, 1129 VM_MBUF_SIZE, FALSE, FALSE, NULL); 1130 #else 1131 mb_map = kmem_suballoc(kernel_map, (vm_offset_t *)&mbutl, &maxaddr, 1132 VM_MBUF_SIZE, FALSE); 1133 #endif 1134 /* 1135 * Initialize callouts 1136 */ 1137 callfree = callout; 1138 for (i = 1; i < ncallout; i++) 1139 callout[i-1].c_next = &callout[i]; 1140 callout[i-1].c_next = NULL; 1141 1142 #if defined(DEBUG) 1143 pmapdebug = opmapdebug; 1144 #endif 1145 #if defined(UVM) 1146 printf("avail mem = %ld\n", (long)ptoa(uvmexp.free)); 1147 #else 1148 printf("avail mem = %ld\n", (long)ptoa(cnt.v_free_count)); 1149 #endif 1150 printf("using %ld buffers containing %ld bytes of memory\n", 1151 (long)nbuf, (long)(bufpages * CLBYTES)); 1152 1153 /* 1154 * Set up buffers, so they can be used to read disk labels. 1155 */ 1156 bufinit(); 1157 1158 /* 1159 * Configure the system. 1160 */ 1161 configure(); 1162 1163 /* 1164 * Note that bootstrapping is finished, and set the HWRPB up 1165 * to do restarts. 1166 */ 1167 hwrpb_restart_setup(); 1168 } 1169 1170 /* 1171 * Retrieve the platform name from the DSR. 1172 */ 1173 const char * 1174 alpha_dsr_sysname() 1175 { 1176 struct dsrdb *dsr; 1177 const char *sysname; 1178 1179 /* 1180 * DSR does not exist on early HWRPB versions. 1181 */ 1182 if (hwrpb->rpb_version < HWRPB_DSRDB_MINVERS) 1183 return (NULL); 1184 1185 dsr = (struct dsrdb *)(((caddr_t)hwrpb) + hwrpb->rpb_dsrdb_off); 1186 sysname = (const char *)((caddr_t)dsr + (dsr->dsr_sysname_off + 1187 sizeof(u_int64_t))); 1188 return (sysname); 1189 } 1190 1191 /* 1192 * Lookup the system specified system variation in the provided table, 1193 * returning the model string on match. 1194 */ 1195 const char * 1196 alpha_variation_name(variation, avtp) 1197 u_int64_t variation; 1198 const struct alpha_variation_table *avtp; 1199 { 1200 int i; 1201 1202 for (i = 0; avtp[i].avt_model != NULL; i++) 1203 if (avtp[i].avt_variation == variation) 1204 return (avtp[i].avt_model); 1205 return (NULL); 1206 } 1207 1208 /* 1209 * Generate a default platform name based for unknown system variations. 1210 */ 1211 const char * 1212 alpha_unknown_sysname() 1213 { 1214 static char s[128]; /* safe size */ 1215 1216 sprintf(s, "%s family, unknown model variation 0x%lx", 1217 platform.family, hwrpb->rpb_variation & SV_ST_MASK); 1218 return ((const char *)s); 1219 } 1220 1221 void 1222 identifycpu() 1223 { 1224 1225 /* 1226 * print out CPU identification information. 1227 */ 1228 printf("%s, %ldMHz\n", cpu_model, 1229 hwrpb->rpb_cc_freq / 1000000); /* XXX true for 21164? */ 1230 printf("%ld byte page size, %d processor%s.\n", 1231 hwrpb->rpb_page_size, ncpus, ncpus == 1 ? "" : "s"); 1232 #if 0 1233 /* this isn't defined for any systems that we run on? */ 1234 printf("serial number 0x%lx 0x%lx\n", 1235 ((long *)hwrpb->rpb_ssn)[0], ((long *)hwrpb->rpb_ssn)[1]); 1236 1237 /* and these aren't particularly useful! */ 1238 printf("variation: 0x%lx, revision 0x%lx\n", 1239 hwrpb->rpb_variation, *(long *)hwrpb->rpb_revision); 1240 #endif 1241 } 1242 1243 int waittime = -1; 1244 struct pcb dumppcb; 1245 1246 void 1247 cpu_reboot(howto, bootstr) 1248 int howto; 1249 char *bootstr; 1250 { 1251 extern int cold; 1252 1253 /* If system is cold, just halt. */ 1254 if (cold) { 1255 howto |= RB_HALT; 1256 goto haltsys; 1257 } 1258 1259 /* If "always halt" was specified as a boot flag, obey. */ 1260 if ((boothowto & RB_HALT) != 0) 1261 howto |= RB_HALT; 1262 1263 boothowto = howto; 1264 if ((howto & RB_NOSYNC) == 0 && waittime < 0) { 1265 waittime = 0; 1266 vfs_shutdown(); 1267 /* 1268 * If we've been adjusting the clock, the todr 1269 * will be out of synch; adjust it now. 1270 */ 1271 resettodr(); 1272 } 1273 1274 /* Disable interrupts. */ 1275 splhigh(); 1276 1277 /* If rebooting and a dump is requested do it. */ 1278 #if 0 1279 if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP) 1280 #else 1281 if (howto & RB_DUMP) 1282 #endif 1283 dumpsys(); 1284 1285 haltsys: 1286 1287 /* run any shutdown hooks */ 1288 doshutdownhooks(); 1289 1290 #ifdef BOOTKEY 1291 printf("hit any key to %s...\n", howto & RB_HALT ? "halt" : "reboot"); 1292 cnpollc(1); /* for proper keyboard command handling */ 1293 cngetc(); 1294 cnpollc(0); 1295 printf("\n"); 1296 #endif 1297 1298 /* Finally, powerdown/halt/reboot the system. */ 1299 if ((howto && RB_POWERDOWN) == RB_POWERDOWN && 1300 platform.powerdown != NULL) { 1301 (*platform.powerdown)(); 1302 printf("WARNING: powerdown failed!\n"); 1303 } 1304 printf("%s\n\n", howto & RB_HALT ? "halted." : "rebooting..."); 1305 prom_halt(howto & RB_HALT); 1306 /*NOTREACHED*/ 1307 } 1308 1309 /* 1310 * These variables are needed by /sbin/savecore 1311 */ 1312 u_long dumpmag = 0x8fca0101; /* magic number */ 1313 int dumpsize = 0; /* pages */ 1314 long dumplo = 0; /* blocks */ 1315 1316 /* 1317 * cpu_dumpsize: calculate size of machine-dependent kernel core dump headers. 1318 */ 1319 int 1320 cpu_dumpsize() 1321 { 1322 int size; 1323 1324 size = ALIGN(sizeof(kcore_seg_t)) + ALIGN(sizeof(cpu_kcore_hdr_t)) + 1325 ALIGN(mem_cluster_cnt * sizeof(phys_ram_seg_t)); 1326 if (roundup(size, dbtob(1)) != dbtob(1)) 1327 return -1; 1328 1329 return (1); 1330 } 1331 1332 /* 1333 * cpu_dump_mempagecnt: calculate size of RAM (in pages) to be dumped. 1334 */ 1335 u_long 1336 cpu_dump_mempagecnt() 1337 { 1338 u_long i, n; 1339 1340 n = 0; 1341 for (i = 0; i < mem_cluster_cnt; i++) 1342 n += atop(mem_clusters[i].size); 1343 return (n); 1344 } 1345 1346 /* 1347 * cpu_dump: dump machine-dependent kernel core dump headers. 1348 */ 1349 int 1350 cpu_dump() 1351 { 1352 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1353 char buf[dbtob(1)]; 1354 kcore_seg_t *segp; 1355 cpu_kcore_hdr_t *cpuhdrp; 1356 phys_ram_seg_t *memsegp; 1357 int i; 1358 1359 dump = bdevsw[major(dumpdev)].d_dump; 1360 1361 bzero(buf, sizeof buf); 1362 segp = (kcore_seg_t *)buf; 1363 cpuhdrp = (cpu_kcore_hdr_t *)&buf[ALIGN(sizeof(*segp))]; 1364 memsegp = (phys_ram_seg_t *)&buf[ ALIGN(sizeof(*segp)) + 1365 ALIGN(sizeof(*cpuhdrp))]; 1366 1367 /* 1368 * Generate a segment header. 1369 */ 1370 CORE_SETMAGIC(*segp, KCORE_MAGIC, MID_MACHINE, CORE_CPU); 1371 segp->c_size = dbtob(1) - ALIGN(sizeof(*segp)); 1372 1373 /* 1374 * Add the machine-dependent header info. 1375 */ 1376 cpuhdrp->lev1map_pa = ALPHA_K0SEG_TO_PHYS((vm_offset_t)kernel_lev1map); 1377 cpuhdrp->page_size = PAGE_SIZE; 1378 cpuhdrp->nmemsegs = mem_cluster_cnt; 1379 1380 /* 1381 * Fill in the memory segment descriptors. 1382 */ 1383 for (i = 0; i < mem_cluster_cnt; i++) { 1384 memsegp[i].start = mem_clusters[i].start; 1385 memsegp[i].size = mem_clusters[i].size & ~PAGE_MASK; 1386 } 1387 1388 return (dump(dumpdev, dumplo, (caddr_t)buf, dbtob(1))); 1389 } 1390 1391 /* 1392 * This is called by main to set dumplo and dumpsize. 1393 * Dumps always skip the first CLBYTES of disk space 1394 * in case there might be a disk label stored there. 1395 * If there is extra space, put dump at the end to 1396 * reduce the chance that swapping trashes it. 1397 */ 1398 void 1399 cpu_dumpconf() 1400 { 1401 int nblks, dumpblks; /* size of dump area */ 1402 int maj; 1403 1404 if (dumpdev == NODEV) 1405 goto bad; 1406 maj = major(dumpdev); 1407 if (maj < 0 || maj >= nblkdev) 1408 panic("dumpconf: bad dumpdev=0x%x", dumpdev); 1409 if (bdevsw[maj].d_psize == NULL) 1410 goto bad; 1411 nblks = (*bdevsw[maj].d_psize)(dumpdev); 1412 if (nblks <= ctod(1)) 1413 goto bad; 1414 1415 dumpblks = cpu_dumpsize(); 1416 if (dumpblks < 0) 1417 goto bad; 1418 dumpblks += ctod(cpu_dump_mempagecnt()); 1419 1420 /* If dump won't fit (incl. room for possible label), punt. */ 1421 if (dumpblks > (nblks - ctod(1))) 1422 goto bad; 1423 1424 /* Put dump at end of partition */ 1425 dumplo = nblks - dumpblks; 1426 1427 /* dumpsize is in page units, and doesn't include headers. */ 1428 dumpsize = cpu_dump_mempagecnt(); 1429 return; 1430 1431 bad: 1432 dumpsize = 0; 1433 return; 1434 } 1435 1436 /* 1437 * Dump the kernel's image to the swap partition. 1438 */ 1439 #define BYTES_PER_DUMP NBPG 1440 1441 void 1442 dumpsys() 1443 { 1444 u_long totalbytesleft, bytes, i, n, memcl; 1445 u_long maddr; 1446 int psize; 1447 daddr_t blkno; 1448 int (*dump) __P((dev_t, daddr_t, caddr_t, size_t)); 1449 int error; 1450 1451 /* Save registers. */ 1452 savectx(&dumppcb); 1453 1454 msgbufenabled = 0; /* don't record dump msgs in msgbuf */ 1455 if (dumpdev == NODEV) 1456 return; 1457 1458 /* 1459 * For dumps during autoconfiguration, 1460 * if dump device has already configured... 1461 */ 1462 if (dumpsize == 0) 1463 cpu_dumpconf(); 1464 if (dumplo <= 0) { 1465 printf("\ndump to dev %u,%u not possible\n", major(dumpdev), 1466 minor(dumpdev)); 1467 return; 1468 } 1469 printf("\ndumping to dev %u,%u offset %ld\n", major(dumpdev), 1470 minor(dumpdev), dumplo); 1471 1472 psize = (*bdevsw[major(dumpdev)].d_psize)(dumpdev); 1473 printf("dump "); 1474 if (psize == -1) { 1475 printf("area unavailable\n"); 1476 return; 1477 } 1478 1479 /* XXX should purge all outstanding keystrokes. */ 1480 1481 if ((error = cpu_dump()) != 0) 1482 goto err; 1483 1484 totalbytesleft = ptoa(cpu_dump_mempagecnt()); 1485 blkno = dumplo + cpu_dumpsize(); 1486 dump = bdevsw[major(dumpdev)].d_dump; 1487 error = 0; 1488 1489 for (memcl = 0; memcl < mem_cluster_cnt; memcl++) { 1490 maddr = mem_clusters[memcl].start; 1491 bytes = mem_clusters[memcl].size & ~PAGE_MASK; 1492 1493 for (i = 0; i < bytes; i += n, totalbytesleft -= n) { 1494 1495 /* Print out how many MBs we to go. */ 1496 if ((totalbytesleft % (1024*1024)) == 0) 1497 printf("%d ", totalbytesleft / (1024 * 1024)); 1498 1499 /* Limit size for next transfer. */ 1500 n = bytes - i; 1501 if (n > BYTES_PER_DUMP) 1502 n = BYTES_PER_DUMP; 1503 1504 error = (*dump)(dumpdev, blkno, 1505 (caddr_t)ALPHA_PHYS_TO_K0SEG(maddr), n); 1506 if (error) 1507 goto err; 1508 maddr += n; 1509 blkno += btodb(n); /* XXX? */ 1510 1511 /* XXX should look for keystrokes, to cancel. */ 1512 } 1513 } 1514 1515 err: 1516 switch (error) { 1517 1518 case ENXIO: 1519 printf("device bad\n"); 1520 break; 1521 1522 case EFAULT: 1523 printf("device not ready\n"); 1524 break; 1525 1526 case EINVAL: 1527 printf("area improper\n"); 1528 break; 1529 1530 case EIO: 1531 printf("i/o error\n"); 1532 break; 1533 1534 case EINTR: 1535 printf("aborted from console\n"); 1536 break; 1537 1538 case 0: 1539 printf("succeeded\n"); 1540 break; 1541 1542 default: 1543 printf("error %d\n", error); 1544 break; 1545 } 1546 printf("\n\n"); 1547 delay(1000); 1548 } 1549 1550 void 1551 frametoreg(framep, regp) 1552 struct trapframe *framep; 1553 struct reg *regp; 1554 { 1555 1556 regp->r_regs[R_V0] = framep->tf_regs[FRAME_V0]; 1557 regp->r_regs[R_T0] = framep->tf_regs[FRAME_T0]; 1558 regp->r_regs[R_T1] = framep->tf_regs[FRAME_T1]; 1559 regp->r_regs[R_T2] = framep->tf_regs[FRAME_T2]; 1560 regp->r_regs[R_T3] = framep->tf_regs[FRAME_T3]; 1561 regp->r_regs[R_T4] = framep->tf_regs[FRAME_T4]; 1562 regp->r_regs[R_T5] = framep->tf_regs[FRAME_T5]; 1563 regp->r_regs[R_T6] = framep->tf_regs[FRAME_T6]; 1564 regp->r_regs[R_T7] = framep->tf_regs[FRAME_T7]; 1565 regp->r_regs[R_S0] = framep->tf_regs[FRAME_S0]; 1566 regp->r_regs[R_S1] = framep->tf_regs[FRAME_S1]; 1567 regp->r_regs[R_S2] = framep->tf_regs[FRAME_S2]; 1568 regp->r_regs[R_S3] = framep->tf_regs[FRAME_S3]; 1569 regp->r_regs[R_S4] = framep->tf_regs[FRAME_S4]; 1570 regp->r_regs[R_S5] = framep->tf_regs[FRAME_S5]; 1571 regp->r_regs[R_S6] = framep->tf_regs[FRAME_S6]; 1572 regp->r_regs[R_A0] = framep->tf_regs[FRAME_A0]; 1573 regp->r_regs[R_A1] = framep->tf_regs[FRAME_A1]; 1574 regp->r_regs[R_A2] = framep->tf_regs[FRAME_A2]; 1575 regp->r_regs[R_A3] = framep->tf_regs[FRAME_A3]; 1576 regp->r_regs[R_A4] = framep->tf_regs[FRAME_A4]; 1577 regp->r_regs[R_A5] = framep->tf_regs[FRAME_A5]; 1578 regp->r_regs[R_T8] = framep->tf_regs[FRAME_T8]; 1579 regp->r_regs[R_T9] = framep->tf_regs[FRAME_T9]; 1580 regp->r_regs[R_T10] = framep->tf_regs[FRAME_T10]; 1581 regp->r_regs[R_T11] = framep->tf_regs[FRAME_T11]; 1582 regp->r_regs[R_RA] = framep->tf_regs[FRAME_RA]; 1583 regp->r_regs[R_T12] = framep->tf_regs[FRAME_T12]; 1584 regp->r_regs[R_AT] = framep->tf_regs[FRAME_AT]; 1585 regp->r_regs[R_GP] = framep->tf_regs[FRAME_GP]; 1586 /* regp->r_regs[R_SP] = framep->tf_regs[FRAME_SP]; XXX */ 1587 regp->r_regs[R_ZERO] = 0; 1588 } 1589 1590 void 1591 regtoframe(regp, framep) 1592 struct reg *regp; 1593 struct trapframe *framep; 1594 { 1595 1596 framep->tf_regs[FRAME_V0] = regp->r_regs[R_V0]; 1597 framep->tf_regs[FRAME_T0] = regp->r_regs[R_T0]; 1598 framep->tf_regs[FRAME_T1] = regp->r_regs[R_T1]; 1599 framep->tf_regs[FRAME_T2] = regp->r_regs[R_T2]; 1600 framep->tf_regs[FRAME_T3] = regp->r_regs[R_T3]; 1601 framep->tf_regs[FRAME_T4] = regp->r_regs[R_T4]; 1602 framep->tf_regs[FRAME_T5] = regp->r_regs[R_T5]; 1603 framep->tf_regs[FRAME_T6] = regp->r_regs[R_T6]; 1604 framep->tf_regs[FRAME_T7] = regp->r_regs[R_T7]; 1605 framep->tf_regs[FRAME_S0] = regp->r_regs[R_S0]; 1606 framep->tf_regs[FRAME_S1] = regp->r_regs[R_S1]; 1607 framep->tf_regs[FRAME_S2] = regp->r_regs[R_S2]; 1608 framep->tf_regs[FRAME_S3] = regp->r_regs[R_S3]; 1609 framep->tf_regs[FRAME_S4] = regp->r_regs[R_S4]; 1610 framep->tf_regs[FRAME_S5] = regp->r_regs[R_S5]; 1611 framep->tf_regs[FRAME_S6] = regp->r_regs[R_S6]; 1612 framep->tf_regs[FRAME_A0] = regp->r_regs[R_A0]; 1613 framep->tf_regs[FRAME_A1] = regp->r_regs[R_A1]; 1614 framep->tf_regs[FRAME_A2] = regp->r_regs[R_A2]; 1615 framep->tf_regs[FRAME_A3] = regp->r_regs[R_A3]; 1616 framep->tf_regs[FRAME_A4] = regp->r_regs[R_A4]; 1617 framep->tf_regs[FRAME_A5] = regp->r_regs[R_A5]; 1618 framep->tf_regs[FRAME_T8] = regp->r_regs[R_T8]; 1619 framep->tf_regs[FRAME_T9] = regp->r_regs[R_T9]; 1620 framep->tf_regs[FRAME_T10] = regp->r_regs[R_T10]; 1621 framep->tf_regs[FRAME_T11] = regp->r_regs[R_T11]; 1622 framep->tf_regs[FRAME_RA] = regp->r_regs[R_RA]; 1623 framep->tf_regs[FRAME_T12] = regp->r_regs[R_T12]; 1624 framep->tf_regs[FRAME_AT] = regp->r_regs[R_AT]; 1625 framep->tf_regs[FRAME_GP] = regp->r_regs[R_GP]; 1626 /* framep->tf_regs[FRAME_SP] = regp->r_regs[R_SP]; XXX */ 1627 /* ??? = regp->r_regs[R_ZERO]; */ 1628 } 1629 1630 void 1631 printregs(regp) 1632 struct reg *regp; 1633 { 1634 int i; 1635 1636 for (i = 0; i < 32; i++) 1637 printf("R%d:\t0x%016lx%s", i, regp->r_regs[i], 1638 i & 1 ? "\n" : "\t"); 1639 } 1640 1641 void 1642 regdump(framep) 1643 struct trapframe *framep; 1644 { 1645 struct reg reg; 1646 1647 frametoreg(framep, ®); 1648 reg.r_regs[R_SP] = alpha_pal_rdusp(); 1649 1650 printf("REGISTERS:\n"); 1651 printregs(®); 1652 } 1653 1654 #ifdef DEBUG 1655 int sigdebug = 0; 1656 int sigpid = 0; 1657 #define SDB_FOLLOW 0x01 1658 #define SDB_KSTACK 0x02 1659 #endif 1660 1661 /* 1662 * Send an interrupt to process. 1663 */ 1664 void 1665 sendsig(catcher, sig, mask, code) 1666 sig_t catcher; 1667 int sig, mask; 1668 u_long code; 1669 { 1670 struct proc *p = curproc; 1671 struct sigcontext *scp, ksc; 1672 struct trapframe *frame; 1673 struct sigacts *psp = p->p_sigacts; 1674 int oonstack, fsize, rndfsize; 1675 extern char sigcode[], esigcode[]; 1676 extern struct proc *fpcurproc; 1677 1678 frame = p->p_md.md_tf; 1679 oonstack = psp->ps_sigstk.ss_flags & SS_ONSTACK; 1680 fsize = sizeof ksc; 1681 rndfsize = ((fsize + 15) / 16) * 16; 1682 /* 1683 * Allocate and validate space for the signal handler 1684 * context. Note that if the stack is in P0 space, the 1685 * call to grow() is a nop, and the useracc() check 1686 * will fail if the process has not already allocated 1687 * the space with a `brk'. 1688 */ 1689 if ((psp->ps_flags & SAS_ALTSTACK) && !oonstack && 1690 (psp->ps_sigonstack & sigmask(sig))) { 1691 scp = (struct sigcontext *)((caddr_t)psp->ps_sigstk.ss_sp + 1692 psp->ps_sigstk.ss_size - rndfsize); 1693 psp->ps_sigstk.ss_flags |= SS_ONSTACK; 1694 } else 1695 scp = (struct sigcontext *)(alpha_pal_rdusp() - rndfsize); 1696 if ((u_long)scp <= USRSTACK - ctob(p->p_vmspace->vm_ssize)) 1697 #if defined(UVM) 1698 (void)uvm_grow(p, (u_long)scp); 1699 #else 1700 (void)grow(p, (u_long)scp); 1701 #endif 1702 #ifdef DEBUG 1703 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1704 printf("sendsig(%d): sig %d ssp %p usp %p\n", p->p_pid, 1705 sig, &oonstack, scp); 1706 #endif 1707 #if defined(UVM) 1708 if (uvm_useracc((caddr_t)scp, fsize, B_WRITE) == 0) { 1709 #else 1710 if (useracc((caddr_t)scp, fsize, B_WRITE) == 0) { 1711 #endif 1712 #ifdef DEBUG 1713 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1714 printf("sendsig(%d): useracc failed on sig %d\n", 1715 p->p_pid, sig); 1716 #endif 1717 /* 1718 * Process has trashed its stack; give it an illegal 1719 * instruction to halt it in its tracks. 1720 */ 1721 SIGACTION(p, SIGILL) = SIG_DFL; 1722 sig = sigmask(SIGILL); 1723 p->p_sigignore &= ~sig; 1724 p->p_sigcatch &= ~sig; 1725 p->p_sigmask &= ~sig; 1726 psignal(p, SIGILL); 1727 return; 1728 #if !defined(UVM) /* this construct will balance braces for ctags(1) */ 1729 } 1730 #else 1731 } 1732 #endif 1733 1734 /* 1735 * Build the signal context to be used by sigreturn. 1736 */ 1737 ksc.sc_onstack = oonstack; 1738 ksc.sc_mask = mask; 1739 ksc.sc_pc = frame->tf_regs[FRAME_PC]; 1740 ksc.sc_ps = frame->tf_regs[FRAME_PS]; 1741 1742 /* copy the registers. */ 1743 frametoreg(frame, (struct reg *)ksc.sc_regs); 1744 ksc.sc_regs[R_ZERO] = 0xACEDBADE; /* magic number */ 1745 ksc.sc_regs[R_SP] = alpha_pal_rdusp(); 1746 1747 /* save the floating-point state, if necessary, then copy it. */ 1748 if (p == fpcurproc) { 1749 alpha_pal_wrfen(1); 1750 savefpstate(&p->p_addr->u_pcb.pcb_fp); 1751 alpha_pal_wrfen(0); 1752 fpcurproc = NULL; 1753 } 1754 ksc.sc_ownedfp = p->p_md.md_flags & MDP_FPUSED; 1755 bcopy(&p->p_addr->u_pcb.pcb_fp, (struct fpreg *)ksc.sc_fpregs, 1756 sizeof(struct fpreg)); 1757 ksc.sc_fp_control = 0; /* XXX ? */ 1758 bzero(ksc.sc_reserved, sizeof ksc.sc_reserved); /* XXX */ 1759 bzero(ksc.sc_xxx, sizeof ksc.sc_xxx); /* XXX */ 1760 1761 1762 #ifdef COMPAT_OSF1 1763 /* 1764 * XXX Create an OSF/1-style sigcontext and associated goo. 1765 */ 1766 #endif 1767 1768 /* 1769 * copy the frame out to userland. 1770 */ 1771 (void) copyout((caddr_t)&ksc, (caddr_t)scp, fsize); 1772 #ifdef DEBUG 1773 if (sigdebug & SDB_FOLLOW) 1774 printf("sendsig(%d): sig %d scp %p code %lx\n", p->p_pid, sig, 1775 scp, code); 1776 #endif 1777 1778 /* 1779 * Set up the registers to return to sigcode. 1780 */ 1781 frame->tf_regs[FRAME_PC] = 1782 (u_int64_t)PS_STRINGS - (esigcode - sigcode); 1783 frame->tf_regs[FRAME_A0] = sig; 1784 frame->tf_regs[FRAME_A1] = code; 1785 frame->tf_regs[FRAME_A2] = (u_int64_t)scp; 1786 frame->tf_regs[FRAME_T12] = (u_int64_t)catcher; /* t12 is pv */ 1787 alpha_pal_wrusp((unsigned long)scp); 1788 1789 #ifdef DEBUG 1790 if (sigdebug & SDB_FOLLOW) 1791 printf("sendsig(%d): pc %lx, catcher %lx\n", p->p_pid, 1792 frame->tf_regs[FRAME_PC], frame->tf_regs[FRAME_A3]); 1793 if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 1794 printf("sendsig(%d): sig %d returns\n", 1795 p->p_pid, sig); 1796 #endif 1797 } 1798 1799 /* 1800 * System call to cleanup state after a signal 1801 * has been taken. Reset signal mask and 1802 * stack state from context left by sendsig (above). 1803 * Return to previous pc and psl as specified by 1804 * context left by sendsig. Check carefully to 1805 * make sure that the user has not modified the 1806 * psl to gain improper priviledges or to cause 1807 * a machine fault. 1808 */ 1809 /* ARGSUSED */ 1810 int 1811 sys_sigreturn(p, v, retval) 1812 struct proc *p; 1813 void *v; 1814 register_t *retval; 1815 { 1816 struct sys_sigreturn_args /* { 1817 syscallarg(struct sigcontext *) sigcntxp; 1818 } */ *uap = v; 1819 struct sigcontext *scp, ksc; 1820 extern struct proc *fpcurproc; 1821 1822 scp = SCARG(uap, sigcntxp); 1823 #ifdef DEBUG 1824 if (sigdebug & SDB_FOLLOW) 1825 printf("sigreturn: pid %d, scp %p\n", p->p_pid, scp); 1826 #endif 1827 1828 if (ALIGN(scp) != (u_int64_t)scp) 1829 return (EINVAL); 1830 1831 /* 1832 * Test and fetch the context structure. 1833 * We grab it all at once for speed. 1834 */ 1835 #if defined(UVM) 1836 if (uvm_useracc((caddr_t)scp, sizeof (*scp), B_WRITE) == 0 || 1837 copyin((caddr_t)scp, (caddr_t)&ksc, sizeof ksc)) 1838 return (EINVAL); 1839 #else 1840 if (useracc((caddr_t)scp, sizeof (*scp), B_WRITE) == 0 || 1841 copyin((caddr_t)scp, (caddr_t)&ksc, sizeof ksc)) 1842 return (EINVAL); 1843 #endif 1844 1845 if (ksc.sc_regs[R_ZERO] != 0xACEDBADE) /* magic number */ 1846 return (EINVAL); 1847 /* 1848 * Restore the user-supplied information 1849 */ 1850 if (ksc.sc_onstack) 1851 p->p_sigacts->ps_sigstk.ss_flags |= SS_ONSTACK; 1852 else 1853 p->p_sigacts->ps_sigstk.ss_flags &= ~SS_ONSTACK; 1854 p->p_sigmask = ksc.sc_mask &~ sigcantmask; 1855 1856 p->p_md.md_tf->tf_regs[FRAME_PC] = ksc.sc_pc; 1857 p->p_md.md_tf->tf_regs[FRAME_PS] = 1858 (ksc.sc_ps | ALPHA_PSL_USERSET) & ~ALPHA_PSL_USERCLR; 1859 1860 regtoframe((struct reg *)ksc.sc_regs, p->p_md.md_tf); 1861 alpha_pal_wrusp(ksc.sc_regs[R_SP]); 1862 1863 /* XXX ksc.sc_ownedfp ? */ 1864 if (p == fpcurproc) 1865 fpcurproc = NULL; 1866 bcopy((struct fpreg *)ksc.sc_fpregs, &p->p_addr->u_pcb.pcb_fp, 1867 sizeof(struct fpreg)); 1868 /* XXX ksc.sc_fp_control ? */ 1869 1870 #ifdef DEBUG 1871 if (sigdebug & SDB_FOLLOW) 1872 printf("sigreturn(%d): returns\n", p->p_pid); 1873 #endif 1874 return (EJUSTRETURN); 1875 } 1876 1877 /* 1878 * machine dependent system variables. 1879 */ 1880 int 1881 cpu_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 1882 int *name; 1883 u_int namelen; 1884 void *oldp; 1885 size_t *oldlenp; 1886 void *newp; 1887 size_t newlen; 1888 struct proc *p; 1889 { 1890 dev_t consdev; 1891 1892 /* all sysctl names at this level are terminal */ 1893 if (namelen != 1) 1894 return (ENOTDIR); /* overloaded */ 1895 1896 switch (name[0]) { 1897 case CPU_CONSDEV: 1898 if (cn_tab != NULL) 1899 consdev = cn_tab->cn_dev; 1900 else 1901 consdev = NODEV; 1902 return (sysctl_rdstruct(oldp, oldlenp, newp, &consdev, 1903 sizeof consdev)); 1904 1905 case CPU_ROOT_DEVICE: 1906 return (sysctl_rdstring(oldp, oldlenp, newp, 1907 root_device->dv_xname)); 1908 1909 case CPU_UNALIGNED_PRINT: 1910 return (sysctl_int(oldp, oldlenp, newp, newlen, 1911 &alpha_unaligned_print)); 1912 1913 case CPU_UNALIGNED_FIX: 1914 return (sysctl_int(oldp, oldlenp, newp, newlen, 1915 &alpha_unaligned_fix)); 1916 1917 case CPU_UNALIGNED_SIGBUS: 1918 return (sysctl_int(oldp, oldlenp, newp, newlen, 1919 &alpha_unaligned_sigbus)); 1920 1921 case CPU_BOOTED_KERNEL: 1922 return (sysctl_rdstring(oldp, oldlenp, newp, 1923 bootinfo.booted_kernel)); 1924 1925 default: 1926 return (EOPNOTSUPP); 1927 } 1928 /* NOTREACHED */ 1929 } 1930 1931 /* 1932 * Set registers on exec. 1933 */ 1934 void 1935 setregs(p, pack, stack) 1936 register struct proc *p; 1937 struct exec_package *pack; 1938 u_long stack; 1939 { 1940 struct trapframe *tfp = p->p_md.md_tf; 1941 extern struct proc *fpcurproc; 1942 #ifdef DEBUG 1943 int i; 1944 #endif 1945 1946 #ifdef DEBUG 1947 /* 1948 * Crash and dump, if the user requested it. 1949 */ 1950 if (boothowto & RB_DUMP) 1951 panic("crash requested by boot flags"); 1952 #endif 1953 1954 #ifdef DEBUG 1955 for (i = 0; i < FRAME_SIZE; i++) 1956 tfp->tf_regs[i] = 0xbabefacedeadbeef; 1957 #else 1958 bzero(tfp->tf_regs, FRAME_SIZE * sizeof tfp->tf_regs[0]); 1959 #endif 1960 bzero(&p->p_addr->u_pcb.pcb_fp, sizeof p->p_addr->u_pcb.pcb_fp); 1961 #define FP_RN 2 /* XXX */ 1962 p->p_addr->u_pcb.pcb_fp.fpr_cr = (long)FP_RN << 58; 1963 alpha_pal_wrusp(stack); 1964 tfp->tf_regs[FRAME_PS] = ALPHA_PSL_USERSET; 1965 tfp->tf_regs[FRAME_PC] = pack->ep_entry & ~3; 1966 1967 tfp->tf_regs[FRAME_A0] = stack; /* a0 = sp */ 1968 tfp->tf_regs[FRAME_A1] = 0; /* a1 = rtld cleanup */ 1969 tfp->tf_regs[FRAME_A2] = 0; /* a2 = rtld object */ 1970 tfp->tf_regs[FRAME_A3] = (u_int64_t)PS_STRINGS; /* a3 = ps_strings */ 1971 tfp->tf_regs[FRAME_T12] = tfp->tf_regs[FRAME_PC]; /* a.k.a. PV */ 1972 1973 p->p_md.md_flags &= ~MDP_FPUSED; 1974 if (fpcurproc == p) 1975 fpcurproc = NULL; 1976 } 1977 1978 void 1979 netintr() 1980 { 1981 int n, s; 1982 1983 s = splhigh(); 1984 n = netisr; 1985 netisr = 0; 1986 splx(s); 1987 1988 #define DONETISR(bit, fn) \ 1989 do { \ 1990 if (n & (1 << (bit))) \ 1991 fn; \ 1992 } while (0) 1993 1994 #ifdef INET 1995 #if NARP > 0 1996 DONETISR(NETISR_ARP, arpintr()); 1997 #endif 1998 DONETISR(NETISR_IP, ipintr()); 1999 #endif 2000 #ifdef NETATALK 2001 DONETISR(NETISR_ATALK, atintr()); 2002 #endif 2003 #ifdef NS 2004 DONETISR(NETISR_NS, nsintr()); 2005 #endif 2006 #ifdef ISO 2007 DONETISR(NETISR_ISO, clnlintr()); 2008 #endif 2009 #ifdef CCITT 2010 DONETISR(NETISR_CCITT, ccittintr()); 2011 #endif 2012 #ifdef NATM 2013 DONETISR(NETISR_NATM, natmintr()); 2014 #endif 2015 #if NPPP > 1 2016 DONETISR(NETISR_PPP, pppintr()); 2017 #endif 2018 2019 #undef DONETISR 2020 } 2021 2022 void 2023 do_sir() 2024 { 2025 u_int64_t n; 2026 2027 do { 2028 (void)splhigh(); 2029 n = ssir; 2030 ssir = 0; 2031 splsoft(); /* don't recurse through spl0() */ 2032 2033 #if defined(UVM) 2034 #define COUNT_SOFT uvmexp.softs++ 2035 #else 2036 #define COUNT_SOFT cnt.v_soft++ 2037 #endif 2038 2039 #define DO_SIR(bit, fn) \ 2040 do { \ 2041 if (n & (bit)) { \ 2042 COUNT_SOFT; \ 2043 fn; \ 2044 } \ 2045 } while (0) 2046 2047 DO_SIR(SIR_NET, netintr()); 2048 DO_SIR(SIR_CLOCK, softclock()); 2049 2050 #undef COUNT_SOFT 2051 #undef DO_SIR 2052 } while (ssir != 0); 2053 } 2054 2055 int 2056 spl0() 2057 { 2058 2059 if (ssir) 2060 do_sir(); /* it lowers the IPL itself */ 2061 2062 return (alpha_pal_swpipl(ALPHA_PSL_IPL_0)); 2063 } 2064 2065 /* 2066 * The following primitives manipulate the run queues. _whichqs tells which 2067 * of the 32 queues _qs have processes in them. Setrunqueue puts processes 2068 * into queues, Remrunqueue removes them from queues. The running process is 2069 * on no queue, other processes are on a queue related to p->p_priority, 2070 * divided by 4 actually to shrink the 0-127 range of priorities into the 32 2071 * available queues. 2072 */ 2073 /* 2074 * setrunqueue(p) 2075 * proc *p; 2076 * 2077 * Call should be made at splclock(), and p->p_stat should be SRUN. 2078 */ 2079 2080 void 2081 setrunqueue(p) 2082 struct proc *p; 2083 { 2084 int bit; 2085 2086 /* firewall: p->p_back must be NULL */ 2087 if (p->p_back != NULL) 2088 panic("setrunqueue"); 2089 2090 bit = p->p_priority >> 2; 2091 whichqs |= (1 << bit); 2092 p->p_forw = (struct proc *)&qs[bit]; 2093 p->p_back = qs[bit].ph_rlink; 2094 p->p_back->p_forw = p; 2095 qs[bit].ph_rlink = p; 2096 } 2097 2098 /* 2099 * remrunqueue(p) 2100 * 2101 * Call should be made at splclock(). 2102 */ 2103 void 2104 remrunqueue(p) 2105 struct proc *p; 2106 { 2107 int bit; 2108 2109 bit = p->p_priority >> 2; 2110 if ((whichqs & (1 << bit)) == 0) 2111 panic("remrunqueue"); 2112 2113 p->p_back->p_forw = p->p_forw; 2114 p->p_forw->p_back = p->p_back; 2115 p->p_back = NULL; /* for firewall checking. */ 2116 2117 if ((struct proc *)&qs[bit] == qs[bit].ph_link) 2118 whichqs &= ~(1 << bit); 2119 } 2120 2121 /* 2122 * Return the best possible estimate of the time in the timeval 2123 * to which tvp points. Unfortunately, we can't read the hardware registers. 2124 * We guarantee that the time will be greater than the value obtained by a 2125 * previous call. 2126 */ 2127 void 2128 microtime(tvp) 2129 register struct timeval *tvp; 2130 { 2131 int s = splclock(); 2132 static struct timeval lasttime; 2133 2134 *tvp = time; 2135 #ifdef notdef 2136 tvp->tv_usec += clkread(); 2137 while (tvp->tv_usec > 1000000) { 2138 tvp->tv_sec++; 2139 tvp->tv_usec -= 1000000; 2140 } 2141 #endif 2142 if (tvp->tv_sec == lasttime.tv_sec && 2143 tvp->tv_usec <= lasttime.tv_usec && 2144 (tvp->tv_usec = lasttime.tv_usec + 1) > 1000000) { 2145 tvp->tv_sec++; 2146 tvp->tv_usec -= 1000000; 2147 } 2148 lasttime = *tvp; 2149 splx(s); 2150 } 2151 2152 /* 2153 * Wait "n" microseconds. 2154 */ 2155 void 2156 delay(n) 2157 unsigned long n; 2158 { 2159 long N = cycles_per_usec * (n); 2160 2161 while (N > 0) /* XXX */ 2162 N -= 3; /* XXX */ 2163 } 2164 2165 #if defined(COMPAT_OSF1) || 1 /* XXX */ 2166 void cpu_exec_ecoff_setregs __P((struct proc *, struct exec_package *, 2167 u_long)); 2168 2169 void 2170 cpu_exec_ecoff_setregs(p, epp, stack) 2171 struct proc *p; 2172 struct exec_package *epp; 2173 u_long stack; 2174 { 2175 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2176 2177 setregs(p, epp, stack); 2178 p->p_md.md_tf->tf_regs[FRAME_GP] = execp->a.gp_value; 2179 } 2180 2181 /* 2182 * cpu_exec_ecoff_hook(): 2183 * cpu-dependent ECOFF format hook for execve(). 2184 * 2185 * Do any machine-dependent diddling of the exec package when doing ECOFF. 2186 * 2187 */ 2188 int 2189 cpu_exec_ecoff_hook(p, epp) 2190 struct proc *p; 2191 struct exec_package *epp; 2192 { 2193 struct ecoff_exechdr *execp = (struct ecoff_exechdr *)epp->ep_hdr; 2194 extern struct emul emul_netbsd; 2195 #ifdef COMPAT_OSF1 2196 extern struct emul emul_osf1; 2197 #endif 2198 2199 switch (execp->f.f_magic) { 2200 #ifdef COMPAT_OSF1 2201 case ECOFF_MAGIC_ALPHA: 2202 epp->ep_emul = &emul_osf1; 2203 break; 2204 #endif 2205 2206 case ECOFF_MAGIC_NETBSD_ALPHA: 2207 epp->ep_emul = &emul_netbsd; 2208 break; 2209 2210 default: 2211 return ENOEXEC; 2212 } 2213 return 0; 2214 } 2215 #endif 2216 2217 int 2218 alpha_pa_access(pa) 2219 u_long pa; 2220 { 2221 int i; 2222 2223 for (i = 0; i < mem_cluster_cnt; i++) { 2224 if (pa < mem_clusters[i].start) 2225 continue; 2226 if ((pa - mem_clusters[i].start) >= 2227 (mem_clusters[i].size & ~PAGE_MASK)) 2228 continue; 2229 return (mem_clusters[i].size & PAGE_MASK); /* prot */ 2230 } 2231 return (PROT_NONE); 2232 } 2233 2234 /* XXX XXX BEGIN XXX XXX */ 2235 vm_offset_t alpha_XXX_dmamap_or; /* XXX */ 2236 /* XXX */ 2237 vm_offset_t /* XXX */ 2238 alpha_XXX_dmamap(v) /* XXX */ 2239 vm_offset_t v; /* XXX */ 2240 { /* XXX */ 2241 /* XXX */ 2242 return (vtophys(v) | alpha_XXX_dmamap_or); /* XXX */ 2243 } /* XXX */ 2244 /* XXX XXX END XXX XXX */ 2245
Indexes created Thu Oct 02 01:09:59 GMT 2025