arm32_machdep.c revision 1.58.8.1
1 /* $NetBSD: arm32_machdep.c,v 1.58.8.1 2014/02/15 16:18:36 matt Exp $ */ 2 3 /* 4 * Copyright (c) 1994-1998 Mark Brinicombe. 5 * Copyright (c) 1994 Brini. 6 * All rights reserved. 7 * 8 * This code is derived from software written for Brini by Mark Brinicombe 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by Mark Brinicombe 21 * for the NetBSD Project. 22 * 4. The name of the company nor the name of the author may be used to 23 * endorse or promote products derived from this software without specific 24 * prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 27 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 28 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 29 * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 30 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 31 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 32 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * Machine dependent functions for kernel setup 39 * 40 * Created : 17/09/94 41 * Updated : 18/04/01 updated for new wscons 42 */ 43 44 #include <sys/cdefs.h> 45 __KERNEL_RCSID(0, "$NetBSD: arm32_machdep.c,v 1.58.8.1 2014/02/15 16:18:36 matt Exp $"); 46 47 #include "opt_modular.h" 48 #include "opt_md.h" 49 #include "opt_pmap_debug.h" 50 51 #include <sys/param.h> 52 #include <sys/systm.h> 53 #include <sys/reboot.h> 54 #include <sys/proc.h> 55 #include <sys/kauth.h> 56 #include <sys/kernel.h> 57 #include <sys/mbuf.h> 58 #include <sys/mount.h> 59 #include <sys/buf.h> 60 #include <sys/msgbuf.h> 61 #include <sys/device.h> 62 #include <sys/sysctl.h> 63 #include <sys/cpu.h> 64 #include <sys/intr.h> 65 #include <sys/module.h> 66 #include <sys/atomic.h> 67 #include <sys/xcall.h> 68 69 #include <uvm/uvm_extern.h> 70 71 #include <dev/cons.h> 72 73 #include <arm/locore.h> 74 75 #include <arm/arm32/katelib.h> 76 #include <arm/arm32/machdep.h> 77 78 #include <machine/bootconfig.h> 79 #include <machine/pcb.h> 80 81 void (*cpu_reset_address)(void); /* Used by locore */ 82 paddr_t cpu_reset_address_paddr; /* Used by locore */ 83 84 struct vm_map *mb_map = NULL; 85 struct vm_map *phys_map = NULL; 86 87 #if defined(MEMORY_DISK_HOOKS) && !defined(MEMORY_DISK_ROOT_SIZE) 88 extern size_t md_root_size; /* Memory disc size */ 89 #endif /* MEMORY_DISK_HOOKS && !MEMORY_DISK_ROOT_SIZE */ 90 91 pv_addr_t kernelstack; 92 pv_addr_t abtstack; 93 pv_addr_t fiqstack; 94 pv_addr_t irqstack; 95 pv_addr_t undstack; 96 pv_addr_t idlestack; 97 98 void * msgbufaddr; 99 extern paddr_t msgbufphys; 100 101 struct user *proc0paddr; 102 103 int kernel_debug = 0; 104 int cpu_printfataltraps = 0; 105 int cpu_fpu_present; 106 int cpu_hwdiv_present; 107 int cpu_neon_present; 108 int cpu_simd_present; 109 int cpu_simdex_present; 110 int cpu_umull_present; 111 const char *cpu_arch = ""; 112 113 int cpu_instruction_set_attributes[6]; 114 int cpu_memory_model_features[4]; 115 int cpu_processor_features[2]; 116 int cpu_media_and_vfp_features[2]; 117 118 /* exported variable to be filled in by the bootloaders */ 119 char *booted_kernel; 120 121 /* Prototypes */ 122 123 void data_abort_handler(trapframe_t *frame); 124 void prefetch_abort_handler(trapframe_t *frame); 125 extern void configure(void); 126 127 /* 128 * arm32_vector_init: 129 * 130 * Initialize the vector page, and select whether or not to 131 * relocate the vectors. 132 * 133 * NOTE: We expect the vector page to be mapped at its expected 134 * destination. 135 */ 136 void 137 arm32_vector_init(vaddr_t va, int which) 138 { 139 #if defined(CPU_ARMV7) || defined(CPU_ARM11) || defined(ARM_HAS_VBAR) 140 /* 141 * If this processor has the security extension, don't bother 142 * to move/map the vector page. Simply point VBAR to the copy 143 * that exists in the .text segment. 144 */ 145 #ifndef ARM_HAS_VBAR 146 if (va == ARM_VECTORS_LOW 147 && (armreg_pfr1_read() & ARM_PFR1_SEC_MASK) != 0) { 148 #endif 149 extern const uint32_t page0rel[]; 150 vector_page = (vaddr_t)page0rel; 151 KASSERT((vector_page & 0x1f) == 0); 152 armreg_vbar_write(vector_page); 153 #ifdef VERBOSE_INIT_ARM 154 printf(" vbar=%p", page0rel); 155 #endif 156 cpu_control(CPU_CONTROL_VECRELOC, 0); 157 return; 158 #ifndef ARM_HAS_VBAR 159 } 160 #endif 161 #endif 162 #ifndef ARM_HAS_VBAR 163 if (CPU_IS_PRIMARY(curcpu())) { 164 extern unsigned int page0[], page0_data[]; 165 unsigned int *vectors = (int *) va; 166 unsigned int *vectors_data = vectors + (page0_data - page0); 167 int vec; 168 169 /* 170 * Loop through the vectors we're taking over, and copy the 171 * vector's insn and data word. 172 */ 173 for (vec = 0; vec < ARM_NVEC; vec++) { 174 if ((which & (1 << vec)) == 0) { 175 /* Don't want to take over this vector. */ 176 continue; 177 } 178 vectors[vec] = page0[vec]; 179 vectors_data[vec] = page0_data[vec]; 180 } 181 182 /* Now sync the vectors. */ 183 cpu_icache_sync_range(va, (ARM_NVEC * 2) * sizeof(u_int)); 184 185 vector_page = va; 186 } 187 188 if (va == ARM_VECTORS_HIGH) { 189 /* 190 * Assume the MD caller knows what it's doing here, and 191 * really does want the vector page relocated. 192 * 193 * Note: This has to be done here (and not just in 194 * cpu_setup()) because the vector page needs to be 195 * accessible *before* cpu_startup() is called. 196 * Think ddb(9) ... 197 * 198 * NOTE: If the CPU control register is not readable, 199 * this will totally fail! We'll just assume that 200 * any system that has high vector support has a 201 * readable CPU control register, for now. If we 202 * ever encounter one that does not, we'll have to 203 * rethink this. 204 */ 205 cpu_control(CPU_CONTROL_VECRELOC, CPU_CONTROL_VECRELOC); 206 } 207 #endif 208 } 209 210 /* 211 * Debug function just to park the CPU 212 */ 213 214 void 215 halt(void) 216 { 217 while (1) 218 cpu_sleep(0); 219 } 220 221 222 /* Sync the discs, unmount the filesystems, and adjust the todr */ 223 224 void 225 bootsync(void) 226 { 227 static bool bootsyncdone = false; 228 229 if (bootsyncdone) return; 230 231 bootsyncdone = true; 232 233 /* Make sure we can still manage to do things */ 234 if (GetCPSR() & I32_bit) { 235 /* 236 * If we get here then boot has been called without RB_NOSYNC 237 * and interrupts were disabled. This means the boot() call 238 * did not come from a user process e.g. shutdown, but must 239 * have come from somewhere in the kernel. 240 */ 241 IRQenable; 242 printf("Warning IRQ's disabled during boot()\n"); 243 } 244 245 vfs_shutdown(); 246 247 resettodr(); 248 } 249 250 /* 251 * void cpu_startup(void) 252 * 253 * Machine dependent startup code. 254 * 255 */ 256 void 257 cpu_startup(void) 258 { 259 vaddr_t minaddr; 260 vaddr_t maxaddr; 261 u_int loop; 262 char pbuf[9]; 263 264 /* 265 * Until we better locking, we have to live under the kernel lock. 266 */ 267 //KERNEL_LOCK(1, NULL); 268 269 /* Set the CPU control register */ 270 cpu_setup(boot_args); 271 272 #ifndef ARM_HAS_VBAR 273 /* Lock down zero page */ 274 vector_page_setprot(VM_PROT_READ); 275 #endif 276 277 /* 278 * Give pmap a chance to set up a few more things now the vm 279 * is initialised 280 */ 281 pmap_postinit(); 282 283 /* 284 * Initialize error message buffer (at end of core). 285 */ 286 287 /* msgbufphys was setup during the secondary boot strap */ 288 for (loop = 0; loop < btoc(MSGBUFSIZE); ++loop) 289 pmap_kenter_pa((vaddr_t)msgbufaddr + loop * PAGE_SIZE, 290 msgbufphys + loop * PAGE_SIZE, 291 VM_PROT_READ|VM_PROT_WRITE); 292 pmap_update(pmap_kernel()); 293 initmsgbuf(msgbufaddr, round_page(MSGBUFSIZE)); 294 295 /* 296 * Identify ourselves for the msgbuf (everything printed earlier will 297 * not be buffered). 298 */ 299 printf("%s%s", copyright, version); 300 301 format_bytes(pbuf, sizeof(pbuf), arm_ptob(physmem)); 302 printf("total memory = %s\n", pbuf); 303 304 minaddr = 0; 305 306 /* 307 * Allocate a submap for physio 308 */ 309 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 310 VM_PHYS_SIZE, 0, false, NULL); 311 312 /* 313 * Finally, allocate mbuf cluster submap. 314 */ 315 mb_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 316 nmbclusters * mclbytes, VM_MAP_INTRSAFE, 317 false, NULL); 318 319 format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 320 printf("avail memory = %s\n", pbuf); 321 322 struct lwp * const l = &lwp0; 323 struct pcb * const pcb = lwp_getpcb(l); 324 pcb->pcb_ksp = (vaddr_t)l->l_addr + USPACE_SVC_STACK_TOP; 325 lwp_settrapframe(l, (struct trapframe *)pcb->pcb_ksp - 1); 326 } 327 328 /* 329 * machine dependent system variables. 330 */ 331 static int 332 sysctl_machdep_booted_device(SYSCTLFN_ARGS) 333 { 334 struct sysctlnode node; 335 336 if (booted_device == NULL) 337 return (EOPNOTSUPP); 338 339 node = *rnode; 340 node.sysctl_data = __UNCONST(device_xname(booted_device)); 341 node.sysctl_size = strlen(device_xname(booted_device)) + 1; 342 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 343 } 344 345 static int 346 sysctl_machdep_booted_kernel(SYSCTLFN_ARGS) 347 { 348 struct sysctlnode node; 349 350 if (booted_kernel == NULL || booted_kernel[0] == '\0') 351 return (EOPNOTSUPP); 352 353 node = *rnode; 354 node.sysctl_data = booted_kernel; 355 node.sysctl_size = strlen(booted_kernel) + 1; 356 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 357 } 358 359 static int 360 sysctl_machdep_cpu_arch(SYSCTLFN_ARGS) 361 { 362 struct sysctlnode node = *rnode; 363 node.sysctl_data = __UNCONST(cpu_arch); 364 node.sysctl_size = strlen(cpu_arch) + 1; 365 return sysctl_lookup(SYSCTLFN_CALL(&node)); 366 } 367 368 static int 369 sysctl_machdep_powersave(SYSCTLFN_ARGS) 370 { 371 struct sysctlnode node = *rnode; 372 int error, newval; 373 374 newval = cpu_do_powersave; 375 node.sysctl_data = &newval; 376 if (cpufuncs.cf_sleep == (void *) cpufunc_nullop) 377 node.sysctl_flags &= ~CTLFLAG_READWRITE; 378 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 379 if (error || newp == NULL || newval == cpu_do_powersave) 380 return (error); 381 382 if (newval < 0 || newval > 1) 383 return (EINVAL); 384 cpu_do_powersave = newval; 385 386 return (0); 387 } 388 389 SYSCTL_SETUP(sysctl_machdep_setup, "sysctl machdep subtree setup") 390 { 391 392 sysctl_createv(clog, 0, NULL, NULL, 393 CTLFLAG_PERMANENT, 394 CTLTYPE_NODE, "machdep", NULL, 395 NULL, 0, NULL, 0, 396 CTL_MACHDEP, CTL_EOL); 397 398 sysctl_createv(clog, 0, NULL, NULL, 399 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 400 CTLTYPE_INT, "debug", NULL, 401 NULL, 0, &kernel_debug, 0, 402 CTL_MACHDEP, CPU_DEBUG, CTL_EOL); 403 sysctl_createv(clog, 0, NULL, NULL, 404 CTLFLAG_PERMANENT, 405 CTLTYPE_STRING, "booted_device", NULL, 406 sysctl_machdep_booted_device, 0, NULL, 0, 407 CTL_MACHDEP, CPU_BOOTED_DEVICE, CTL_EOL); 408 sysctl_createv(clog, 0, NULL, NULL, 409 CTLFLAG_PERMANENT, 410 CTLTYPE_STRING, "booted_kernel", NULL, 411 sysctl_machdep_booted_kernel, 0, NULL, 0, 412 CTL_MACHDEP, CPU_BOOTED_KERNEL, CTL_EOL); 413 sysctl_createv(clog, 0, NULL, NULL, 414 CTLFLAG_PERMANENT, 415 CTLTYPE_STRUCT, "console_device", NULL, 416 sysctl_consdev, 0, NULL, sizeof(dev_t), 417 CTL_MACHDEP, CPU_CONSDEV, CTL_EOL); 418 sysctl_createv(clog, 0, NULL, NULL, 419 CTLFLAG_PERMANENT, 420 CTLTYPE_STRING, "cpu_arch", NULL, 421 sysctl_machdep_cpu_arch, 0, NULL, 0, 422 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 423 sysctl_createv(clog, 0, NULL, NULL, 424 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 425 CTLTYPE_INT, "powersave", NULL, 426 sysctl_machdep_powersave, 0, &cpu_do_powersave, 0, 427 CTL_MACHDEP, CPU_POWERSAVE, CTL_EOL); 428 sysctl_createv(clog, 0, NULL, NULL, 429 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 430 CTLTYPE_INT, "cpu_id", NULL, 431 NULL, curcpu()->ci_arm_cpuid, NULL, 0, 432 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 433 #ifdef FPU_VFP 434 sysctl_createv(clog, 0, NULL, NULL, 435 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 436 CTLTYPE_INT, "fpu_id", NULL, 437 NULL, 0, &cpu_info_store.ci_vfp_id, 0, 438 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 439 #endif 440 sysctl_createv(clog, 0, NULL, NULL, 441 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 442 CTLTYPE_INT, "fpu_present", NULL, 443 NULL, 0, &cpu_fpu_present, 0, 444 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 445 sysctl_createv(clog, 0, NULL, NULL, 446 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 447 CTLTYPE_INT, "hwdiv_present", NULL, 448 NULL, 0, &cpu_hwdiv_present, 0, 449 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 450 sysctl_createv(clog, 0, NULL, NULL, 451 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 452 CTLTYPE_INT, "neon_present", NULL, 453 NULL, 0, &cpu_neon_present, 0, 454 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 455 sysctl_createv(clog, 0, NULL, NULL, 456 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 457 CTLTYPE_STRUCT, "id_isar", NULL, 458 NULL, 0, 459 cpu_instruction_set_attributes, 460 sizeof(cpu_instruction_set_attributes), 461 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 462 sysctl_createv(clog, 0, NULL, NULL, 463 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 464 CTLTYPE_STRUCT, "id_mmfr", NULL, 465 NULL, 0, 466 cpu_memory_model_features, 467 sizeof(cpu_memory_model_features), 468 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 469 sysctl_createv(clog, 0, NULL, NULL, 470 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 471 CTLTYPE_STRUCT, "id_pfr", NULL, 472 NULL, 0, 473 cpu_processor_features, 474 sizeof(cpu_processor_features), 475 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 476 sysctl_createv(clog, 0, NULL, NULL, 477 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 478 CTLTYPE_STRUCT, "id_mvfr", NULL, 479 NULL, 0, 480 cpu_media_and_vfp_features, 481 sizeof(cpu_media_and_vfp_features), 482 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 483 sysctl_createv(clog, 0, NULL, NULL, 484 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 485 CTLTYPE_INT, "simd_present", NULL, 486 NULL, 0, &cpu_simd_present, 0, 487 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 488 sysctl_createv(clog, 0, NULL, NULL, 489 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 490 CTLTYPE_INT, "simdex_present", NULL, 491 NULL, 0, &cpu_simdex_present, 0, 492 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 493 sysctl_createv(clog, 0, NULL, NULL, 494 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 495 CTLTYPE_INT, "printfataltraps", NULL, 496 NULL, 0, &cpu_printfataltraps, 0, 497 CTL_MACHDEP, CTL_CREATE, CTL_EOL); 498 } 499 500 void 501 parse_mi_bootargs(char *args) 502 { 503 int integer; 504 505 if (get_bootconf_option(args, "single", BOOTOPT_TYPE_BOOLEAN, &integer) 506 || get_bootconf_option(args, "-s", BOOTOPT_TYPE_BOOLEAN, &integer)) 507 if (integer) 508 boothowto |= RB_SINGLE; 509 if (get_bootconf_option(args, "kdb", BOOTOPT_TYPE_BOOLEAN, &integer) 510 || get_bootconf_option(args, "-k", BOOTOPT_TYPE_BOOLEAN, &integer) 511 || get_bootconf_option(args, "-d", BOOTOPT_TYPE_BOOLEAN, &integer)) 512 if (integer) 513 boothowto |= RB_KDB; 514 if (get_bootconf_option(args, "ask", BOOTOPT_TYPE_BOOLEAN, &integer) 515 || get_bootconf_option(args, "-a", BOOTOPT_TYPE_BOOLEAN, &integer)) 516 if (integer) 517 boothowto |= RB_ASKNAME; 518 519 #ifdef PMAP_DEBUG 520 if (get_bootconf_option(args, "pmapdebug", BOOTOPT_TYPE_INT, &integer)) { 521 pmap_debug_level = integer; 522 pmap_debug(pmap_debug_level); 523 } 524 #endif /* PMAP_DEBUG */ 525 526 /* if (get_bootconf_option(args, "nbuf", BOOTOPT_TYPE_INT, &integer)) 527 bufpages = integer;*/ 528 529 #if defined(MEMORY_DISK_HOOKS) && !defined(MEMORY_DISK_ROOT_SIZE) 530 if (get_bootconf_option(args, "memorydisc", BOOTOPT_TYPE_INT, &integer) 531 || get_bootconf_option(args, "memorydisk", BOOTOPT_TYPE_INT, &integer)) { 532 md_root_size = integer; 533 md_root_size *= 1024; 534 if (md_root_size < 32*1024) 535 md_root_size = 32*1024; 536 if (md_root_size > 2048*1024) 537 md_root_size = 2048*1024; 538 } 539 #endif /* MEMORY_DISK_HOOKS && !MEMORY_DISK_ROOT_SIZE */ 540 541 if (get_bootconf_option(args, "quiet", BOOTOPT_TYPE_BOOLEAN, &integer) 542 || get_bootconf_option(args, "-q", BOOTOPT_TYPE_BOOLEAN, &integer)) 543 if (integer) 544 boothowto |= AB_QUIET; 545 if (get_bootconf_option(args, "verbose", BOOTOPT_TYPE_BOOLEAN, &integer) 546 || get_bootconf_option(args, "-v", BOOTOPT_TYPE_BOOLEAN, &integer)) 547 if (integer) 548 boothowto |= AB_VERBOSE; 549 } 550 551 #ifdef __HAVE_FAST_SOFTINTS 552 #if IPL_SOFTSERIAL != IPL_SOFTNET + 1 553 #error IPLs are screwed up 554 #elif IPL_SOFTNET != IPL_SOFTBIO + 1 555 #error IPLs are screwed up 556 #elif IPL_SOFTBIO != IPL_SOFTCLOCK + 1 557 #error IPLs are screwed up 558 #elif !(IPL_SOFTCLOCK > IPL_NONE) 559 #error IPLs are screwed up 560 #elif (IPL_NONE != 0) 561 #error IPLs are screwed up 562 #endif 563 564 #ifndef __HAVE_PIC_FAST_SOFTINTS 565 #define SOFTINT2IPLMAP \ 566 (((IPL_SOFTSERIAL - IPL_SOFTCLOCK) << (SOFTINT_SERIAL * 4)) | \ 567 ((IPL_SOFTNET - IPL_SOFTCLOCK) << (SOFTINT_NET * 4)) | \ 568 ((IPL_SOFTBIO - IPL_SOFTCLOCK) << (SOFTINT_BIO * 4)) | \ 569 ((IPL_SOFTCLOCK - IPL_SOFTCLOCK) << (SOFTINT_CLOCK * 4))) 570 #define SOFTINT2IPL(l) ((SOFTINT2IPLMAP >> ((l) * 4)) & 0x0f) 571 572 /* 573 * This returns a mask of softint IPLs that be dispatch at <ipl> 574 * SOFTIPLMASK(IPL_NONE) = 0x0000000f 575 * SOFTIPLMASK(IPL_SOFTCLOCK) = 0x0000000e 576 * SOFTIPLMASK(IPL_SOFTBIO) = 0x0000000c 577 * SOFTIPLMASK(IPL_SOFTNET) = 0x00000008 578 * SOFTIPLMASK(IPL_SOFTSERIAL) = 0x00000000 579 */ 580 #define SOFTIPLMASK(ipl) ((0x0f << (ipl)) & 0x0f) 581 582 void softint_switch(lwp_t *, int); 583 584 void 585 softint_trigger(uintptr_t mask) 586 { 587 curcpu()->ci_softints |= mask; 588 } 589 590 void 591 softint_init_md(lwp_t *l, u_int level, uintptr_t *machdep) 592 { 593 lwp_t ** lp = &l->l_cpu->ci_softlwps[level]; 594 KASSERT(*lp == NULL || *lp == l); 595 *lp = l; 596 *machdep = 1 << SOFTINT2IPL(level); 597 KASSERT(level != SOFTINT_CLOCK || *machdep == (1 << (IPL_SOFTCLOCK - IPL_SOFTCLOCK))); 598 KASSERT(level != SOFTINT_BIO || *machdep == (1 << (IPL_SOFTBIO - IPL_SOFTCLOCK))); 599 KASSERT(level != SOFTINT_NET || *machdep == (1 << (IPL_SOFTNET - IPL_SOFTCLOCK))); 600 KASSERT(level != SOFTINT_SERIAL || *machdep == (1 << (IPL_SOFTSERIAL - IPL_SOFTCLOCK))); 601 } 602 603 void 604 dosoftints(void) 605 { 606 struct cpu_info * const ci = curcpu(); 607 const int opl = ci->ci_cpl; 608 const uint32_t softiplmask = SOFTIPLMASK(opl); 609 610 splhigh(); 611 for (;;) { 612 u_int softints = ci->ci_softints & softiplmask; 613 KASSERT((softints != 0) == ((ci->ci_softints >> opl) != 0)); 614 KASSERT(opl == IPL_NONE || (softints & (1 << (opl - IPL_SOFTCLOCK))) == 0); 615 if (softints == 0) { 616 splx(opl); 617 return; 618 } 619 #define DOSOFTINT(n) \ 620 if (ci->ci_softints & (1 << (IPL_SOFT ## n - IPL_SOFTCLOCK))) { \ 621 ci->ci_softints &= \ 622 ~(1 << (IPL_SOFT ## n - IPL_SOFTCLOCK)); \ 623 softint_switch(ci->ci_softlwps[SOFTINT_ ## n], \ 624 IPL_SOFT ## n); \ 625 continue; \ 626 } 627 DOSOFTINT(SERIAL); 628 DOSOFTINT(NET); 629 DOSOFTINT(BIO); 630 DOSOFTINT(CLOCK); 631 panic("dosoftints wtf (softints=%u?, ipl=%d)", softints, opl); 632 } 633 } 634 #endif /* !__HAVE_PIC_FAST_SOFTINTS */ 635 #endif /* __HAVE_FAST_SOFTINTS */ 636 637 #ifdef MODULAR 638 /* 639 * Push any modules loaded by the boot loader. 640 */ 641 void 642 module_init_md(void) 643 { 644 } 645 #endif /* MODULAR */ 646 647 #ifdef __HAVE_CPU_UAREA_ALLOC_IDLELWP 648 vaddr_t 649 cpu_uarea_alloc_idlelwp(struct cpu_info *ci) 650 { 651 const vaddr_t va = idlestack.pv_va + ci->ci_cpuid * USPACE; 652 // printf("%s: %s: va=%lx\n", __func__, ci->ci_data.cpu_name, va); 653 return va; 654 } 655 #endif 656 657 #ifdef MULTIPROCESSOR 658 void 659 cpu_boot_secondary_processors(void) 660 { 661 uint32_t mbox; 662 kcpuset_export_u32(kcpuset_attached, &mbox, sizeof(mbox)); 663 atomic_swap_32(&arm_cpu_mbox, mbox); 664 membar_producer(); 665 #ifdef _ARM_ARCH_7 666 __asm __volatile("sev; sev; sev"); 667 #endif 668 } 669 670 void 671 xc_send_ipi(struct cpu_info *ci) 672 { 673 KASSERT(kpreempt_disabled()); 674 KASSERT(curcpu() != ci); 675 676 677 if (ci) { 678 /* Unicast, remote CPU */ 679 printf("%s: -> %s", __func__, ci->ci_data.cpu_name); 680 intr_ipi_send(ci->ci_kcpuset, IPI_XCALL); 681 } else { 682 printf("%s: -> !%s", __func__, ci->ci_data.cpu_name); 683 /* Broadcast to all but ourselves */ 684 kcpuset_t *kcp; 685 kcpuset_create(&kcp, (ci != NULL)); 686 KASSERT(kcp != NULL); 687 kcpuset_copy(kcp, kcpuset_running); 688 kcpuset_clear(kcp, cpu_index(ci)); 689 intr_ipi_send(kcp, IPI_XCALL); 690 kcpuset_destroy(kcp); 691 } 692 printf("\n"); 693 } 694 #endif /* MULTIPROCESSOR */ 695
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