1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved. 24 */ 25 /* 26 * Copyright (c) 2010, Intel Corporation. 27 * All rights reserved. 28 */ 29 30 /* 31 * PSMI 1.1 extensions are supported only in 2.6 and later versions. 32 * PSMI 1.2 extensions are supported only in 2.7 and later versions. 33 * PSMI 1.3 and 1.4 extensions are supported in Solaris 10. 34 * PSMI 1.5 extensions are supported in Solaris Nevada. 35 * PSMI 1.6 extensions are supported in Solaris Nevada. 36 * PSMI 1.7 extensions are supported in Solaris Nevada. 37 */ 38 #define PSMI_1_7 39 40 #include <sys/processor.h> 41 #include <sys/time.h> 42 #include <sys/psm.h> 43 #include <sys/smp_impldefs.h> 44 #include <sys/cram.h> 45 #include <sys/acpi/acpi.h> 46 #include <sys/acpica.h> 47 #include <sys/psm_common.h> 48 #include <sys/pit.h> 49 #include <sys/ddi.h> 50 #include <sys/sunddi.h> 51 #include <sys/ddi_impldefs.h> 52 #include <sys/pci.h> 53 #include <sys/promif.h> 54 #include <sys/x86_archext.h> 55 #include <sys/cpc_impl.h> 56 #include <sys/uadmin.h> 57 #include <sys/panic.h> 58 #include <sys/debug.h> 59 #include <sys/archsystm.h> 60 #include <sys/trap.h> 61 #include <sys/machsystm.h> 62 #include <sys/sysmacros.h> 63 #include <sys/cpuvar.h> 64 #include <sys/rm_platter.h> 65 #include <sys/privregs.h> 66 #include <sys/note.h> 67 #include <sys/pci_intr_lib.h> 68 #include <sys/spl.h> 69 #include <sys/clock.h> 70 #include <sys/dditypes.h> 71 #include <sys/sunddi.h> 72 #include <sys/x_call.h> 73 #include <sys/reboot.h> 74 #include <sys/mach_intr.h> 75 #include <sys/apix.h> 76 #include <sys/apix_irm_impl.h> 77 78 static int apix_probe(); 79 static void apix_init(); 80 static void apix_picinit(void); 81 static int apix_intr_enter(int, int *); 82 static void apix_intr_exit(int, int); 83 static void apix_setspl(int); 84 static int apix_disable_intr(processorid_t); 85 static void apix_enable_intr(processorid_t); 86 static int apix_get_clkvect(int); 87 static int apix_get_ipivect(int, int); 88 static void apix_post_cyclic_setup(void *); 89 static int apix_post_cpu_start(); 90 static int apix_intr_ops(dev_info_t *, ddi_intr_handle_impl_t *, 91 psm_intr_op_t, int *); 92 93 /* 94 * Helper functions for apix_intr_ops() 95 */ 96 static void apix_redistribute_compute(void); 97 static int apix_get_pending(apix_vector_t *); 98 static apix_vector_t *apix_get_req_vector(ddi_intr_handle_impl_t *, ushort_t); 99 static int apix_get_intr_info(ddi_intr_handle_impl_t *, apic_get_intr_t *); 100 static char *apix_get_apic_type(void); 101 static int apix_intx_get_pending(int); 102 static void apix_intx_set_mask(int irqno); 103 static void apix_intx_clear_mask(int irqno); 104 static int apix_intx_get_shared(int irqno); 105 static void apix_intx_set_shared(int irqno, int delta); 106 static apix_vector_t *apix_intx_xlate_vector(dev_info_t *, int, 107 struct intrspec *); 108 static int apix_intx_alloc_vector(dev_info_t *, int, struct intrspec *); 109 110 extern int apic_clkinit(int); 111 112 /* IRM initialization for APIX PSM module */ 113 extern void apix_irm_init(void); 114 115 extern int irm_enable; 116 117 /* 118 * Local static data 119 */ 120 static struct psm_ops apix_ops = { 121 apix_probe, 122 123 apix_init, 124 apix_picinit, 125 apix_intr_enter, 126 apix_intr_exit, 127 apix_setspl, 128 apix_addspl, 129 apix_delspl, 130 apix_disable_intr, 131 apix_enable_intr, 132 NULL, /* psm_softlvl_to_irq */ 133 NULL, /* psm_set_softintr */ 134 135 apic_set_idlecpu, 136 apic_unset_idlecpu, 137 138 apic_clkinit, 139 apix_get_clkvect, 140 NULL, /* psm_hrtimeinit */ 141 apic_gethrtime, 142 143 apic_get_next_processorid, 144 apic_cpu_start, 145 apix_post_cpu_start, 146 apic_shutdown, 147 apix_get_ipivect, 148 apic_send_ipi, 149 150 NULL, /* psm_translate_irq */ 151 NULL, /* psm_notify_error */ 152 NULL, /* psm_notify_func */ 153 apic_timer_reprogram, 154 apic_timer_enable, 155 apic_timer_disable, 156 apix_post_cyclic_setup, 157 apic_preshutdown, 158 apix_intr_ops, /* Advanced DDI Interrupt framework */ 159 apic_state, /* save, restore apic state for S3 */ 160 apic_cpu_ops, /* CPU control interface. */ 161 }; 162 163 struct psm_ops *psmops = &apix_ops; 164 165 static struct psm_info apix_psm_info = { 166 PSM_INFO_VER01_7, /* version */ 167 PSM_OWN_EXCLUSIVE, /* ownership */ 168 &apix_ops, /* operation */ 169 APIX_NAME, /* machine name */ 170 "apix MPv1.4 compatible", 171 }; 172 173 static void *apix_hdlp; 174 175 static int apix_is_enabled = 0; 176 177 /* 178 * Flag to indicate if APIX is to be enabled only for platforms 179 * with specific hw feature(s). 180 */ 181 int apix_hw_chk_enable = 1; 182 183 /* 184 * Hw features that are checked for enabling APIX support. 185 */ 186 #define APIX_SUPPORT_X2APIC 0x00000001 187 uint_t apix_supported_hw = APIX_SUPPORT_X2APIC; 188 189 /* 190 * apix_lock is used for cpu selection and vector re-binding 191 */ 192 lock_t apix_lock; 193 apix_impl_t *apixs[NCPU]; 194 /* 195 * Mapping between device interrupt and the allocated vector. Indexed 196 * by major number. 197 */ 198 apix_dev_vector_t **apix_dev_vector; 199 /* 200 * Mapping between device major number and cpu id. It gets used 201 * when interrupt binding policy round robin with affinity is 202 * applied. With that policy, devices with the same major number 203 * will be bound to the same CPU. 204 */ 205 processorid_t *apix_major_to_cpu; /* major to cpu mapping */ 206 kmutex_t apix_mutex; /* for apix_dev_vector & apix_major_to_cpu */ 207 208 int apix_nipis = 16; /* Maximum number of IPIs */ 209 /* 210 * Maximum number of vectors in a CPU that can be used for interrupt 211 * allocation (including IPIs and the reserved vectors). 212 */ 213 int apix_cpu_nvectors = APIX_NVECTOR; 214 215 /* gcpu.h */ 216 217 extern void apic_do_interrupt(struct regs *rp, trap_trace_rec_t *ttp); 218 extern void apic_change_eoi(); 219 220 /* 221 * This is the loadable module wrapper 222 */ 223 224 int 225 _init(void) 226 { 227 if (apic_coarse_hrtime) 228 apix_ops.psm_gethrtime = &apic_gettime; 229 return (psm_mod_init(&apix_hdlp, &apix_psm_info)); 230 } 231 232 int 233 _fini(void) 234 { 235 return (psm_mod_fini(&apix_hdlp, &apix_psm_info)); 236 } 237 238 int 239 _info(struct modinfo *modinfop) 240 { 241 return (psm_mod_info(&apix_hdlp, &apix_psm_info, modinfop)); 242 } 243 244 static int 245 apix_probe() 246 { 247 int rval; 248 249 if (apix_enable == 0) 250 return (PSM_FAILURE); 251 252 /* check for hw features if specified */ 253 if (apix_hw_chk_enable) { 254 /* check if x2APIC mode is supported */ 255 if ((apix_supported_hw & APIX_SUPPORT_X2APIC) == 256 APIX_SUPPORT_X2APIC) { 257 if (!((apic_local_mode() == LOCAL_X2APIC) || 258 apic_detect_x2apic())) { 259 /* x2APIC mode is not supported in the hw */ 260 apix_enable = 0; 261 } 262 } 263 if (apix_enable == 0) 264 return (PSM_FAILURE); 265 } 266 267 rval = apic_probe_common(apix_psm_info.p_mach_idstring); 268 if (rval == PSM_SUCCESS) 269 apix_is_enabled = 1; 270 else 271 apix_is_enabled = 0; 272 return (rval); 273 } 274 275 /* 276 * Initialize the data structures needed by pcplusmpx module. 277 * Specifically, the data structures used by addspl() and delspl() 278 * routines. 279 */ 280 static void 281 apix_softinit() 282 { 283 int i, *iptr; 284 apix_impl_t *hdlp; 285 int nproc; 286 287 nproc = max(apic_nproc, apic_max_nproc); 288 289 hdlp = kmem_zalloc(nproc * sizeof (apix_impl_t), KM_SLEEP); 290 for (i = 0; i < nproc; i++) { 291 apixs[i] = &hdlp[i]; 292 apixs[i]->x_cpuid = i; 293 LOCK_INIT_CLEAR(&apixs[i]->x_lock); 294 } 295 296 /* cpu 0 is always up (for now) */ 297 apic_cpus[0].aci_status = APIC_CPU_ONLINE | APIC_CPU_INTR_ENABLE; 298 299 iptr = (int *)&apic_irq_table[0]; 300 for (i = 0; i <= APIC_MAX_VECTOR; i++) { 301 apic_level_intr[i] = 0; 302 *iptr++ = NULL; 303 } 304 mutex_init(&airq_mutex, NULL, MUTEX_DEFAULT, NULL); 305 306 apix_dev_vector = kmem_zalloc(sizeof (apix_dev_vector_t *) * devcnt, 307 KM_SLEEP); 308 309 if (apic_intr_policy == INTR_ROUND_ROBIN_WITH_AFFINITY) { 310 apix_major_to_cpu = kmem_zalloc(sizeof (int) * devcnt, 311 KM_SLEEP); 312 for (i = 0; i < devcnt; i++) 313 apix_major_to_cpu[i] = IRQ_UNINIT; 314 } 315 316 mutex_init(&apix_mutex, NULL, MUTEX_DEFAULT, NULL); 317 } 318 319 static int 320 apix_get_pending_spl(void) 321 { 322 int cpuid = CPU->cpu_id; 323 324 return (bsrw_insn(apixs[cpuid]->x_intr_pending)); 325 } 326 327 static uintptr_t 328 apix_get_intr_handler(int cpu, short vec) 329 { 330 apix_vector_t *apix_vector; 331 332 ASSERT(cpu < apic_nproc && vec < APIX_NVECTOR); 333 if (cpu >= apic_nproc) 334 return (NULL); 335 336 apix_vector = apixs[cpu]->x_vectbl[vec]; 337 338 return ((uintptr_t)(apix_vector->v_autovect)); 339 } 340 341 #if defined(__amd64) 342 static unsigned char dummy_cpu_pri[MAXIPL + 1] = { 343 0, 0, 0, 0, 0, 0, 0, 0, 344 0, 0, 0, 0, 0, 0, 0, 0, 0 345 }; 346 #endif 347 348 static void 349 apix_init() 350 { 351 extern void (*do_interrupt_common)(struct regs *, trap_trace_rec_t *); 352 353 APIC_VERBOSE(INIT, (CE_CONT, "apix: psm_softinit\n")); 354 355 do_interrupt_common = apix_do_interrupt; 356 addintr = apix_add_avintr; 357 remintr = apix_rem_avintr; 358 get_pending_spl = apix_get_pending_spl; 359 get_intr_handler = apix_get_intr_handler; 360 psm_get_localapicid = apic_get_localapicid; 361 psm_get_ioapicid = apic_get_ioapicid; 362 363 apix_softinit(); 364 #if defined(__amd64) 365 /* 366 * Make cpu-specific interrupt info point to cr8pri vector 367 */ 368 CPU->cpu_pri_data = dummy_cpu_pri; 369 #else 370 if (cpuid_have_cr8access(CPU)) 371 apic_have_32bit_cr8 = 1; 372 #endif /* __amd64 */ 373 374 /* 375 * Initialize IRM pool parameters 376 */ 377 if (irm_enable) { 378 int i; 379 int lowest_irq; 380 int highest_irq; 381 382 /* number of CPUs present */ 383 apix_irminfo.apix_ncpus = apic_nproc; 384 /* total number of entries in all of the IOAPICs present */ 385 lowest_irq = apic_io_vectbase[0]; 386 highest_irq = apic_io_vectend[0]; 387 for (i = 1; i < apic_io_max; i++) { 388 if (apic_io_vectbase[i] < lowest_irq) 389 lowest_irq = apic_io_vectbase[i]; 390 if (apic_io_vectend[i] > highest_irq) 391 highest_irq = apic_io_vectend[i]; 392 } 393 apix_irminfo.apix_ioapic_max_vectors = 394 highest_irq - lowest_irq + 1; 395 /* 396 * Number of available per-CPU vectors excluding 397 * reserved vectors for Dtrace, int80, system-call, 398 * fast-trap, etc. 399 */ 400 apix_irminfo.apix_per_cpu_vectors = APIX_NAVINTR - 401 APIX_SW_RESERVED_VECTORS; 402 403 /* Number of vectors (pre) allocated (SCI and HPET) */ 404 apix_irminfo.apix_vectors_allocated = 0; 405 if (apic_hpet_vect != -1) 406 apix_irminfo.apix_vectors_allocated++; 407 if (apic_sci_vect != -1) 408 apix_irminfo.apix_vectors_allocated++; 409 } 410 } 411 412 static void 413 apix_init_intr() 414 { 415 processorid_t cpun = psm_get_cpu_id(); 416 uint_t nlvt; 417 uint32_t svr = AV_UNIT_ENABLE | APIC_SPUR_INTR; 418 extern void cmi_cmci_trap(void); 419 420 apic_reg_ops->apic_write_task_reg(APIC_MASK_ALL); 421 422 if (apic_mode == LOCAL_APIC) { 423 /* 424 * We are running APIC in MMIO mode. 425 */ 426 if (apic_flat_model) { 427 apic_reg_ops->apic_write(APIC_FORMAT_REG, 428 APIC_FLAT_MODEL); 429 } else { 430 apic_reg_ops->apic_write(APIC_FORMAT_REG, 431 APIC_CLUSTER_MODEL); 432 } 433 434 apic_reg_ops->apic_write(APIC_DEST_REG, 435 AV_HIGH_ORDER >> cpun); 436 } 437 438 if (apic_directed_EOI_supported()) { 439 /* 440 * Setting the 12th bit in the Spurious Interrupt Vector 441 * Register suppresses broadcast EOIs generated by the local 442 * APIC. The suppression of broadcast EOIs happens only when 443 * interrupts are level-triggered. 444 */ 445 svr |= APIC_SVR_SUPPRESS_BROADCAST_EOI; 446 } 447 448 /* need to enable APIC before unmasking NMI */ 449 apic_reg_ops->apic_write(APIC_SPUR_INT_REG, svr); 450 451 /* 452 * Presence of an invalid vector with delivery mode AV_FIXED can 453 * cause an error interrupt, even if the entry is masked...so 454 * write a valid vector to LVT entries along with the mask bit 455 */ 456 457 /* All APICs have timer and LINT0/1 */ 458 apic_reg_ops->apic_write(APIC_LOCAL_TIMER, AV_MASK|APIC_RESV_IRQ); 459 apic_reg_ops->apic_write(APIC_INT_VECT0, AV_MASK|APIC_RESV_IRQ); 460 apic_reg_ops->apic_write(APIC_INT_VECT1, AV_NMI); /* enable NMI */ 461 462 /* 463 * On integrated APICs, the number of LVT entries is 464 * 'Max LVT entry' + 1; on 82489DX's (non-integrated 465 * APICs), nlvt is "3" (LINT0, LINT1, and timer) 466 */ 467 468 if (apic_cpus[cpun].aci_local_ver < APIC_INTEGRATED_VERS) { 469 nlvt = 3; 470 } else { 471 nlvt = ((apic_reg_ops->apic_read(APIC_VERS_REG) >> 16) & 472 0xFF) + 1; 473 } 474 475 if (nlvt >= 5) { 476 /* Enable performance counter overflow interrupt */ 477 478 if ((x86_feature & X86_MSR) != X86_MSR) 479 apic_enable_cpcovf_intr = 0; 480 if (apic_enable_cpcovf_intr) { 481 if (apic_cpcovf_vect == 0) { 482 int ipl = APIC_PCINT_IPL; 483 484 apic_cpcovf_vect = apix_get_ipivect(ipl, -1); 485 ASSERT(apic_cpcovf_vect); 486 487 (void) add_avintr(NULL, ipl, 488 (avfunc)kcpc_hw_overflow_intr, 489 "apic pcint", apic_cpcovf_vect, 490 NULL, NULL, NULL, NULL); 491 kcpc_hw_overflow_intr_installed = 1; 492 kcpc_hw_enable_cpc_intr = 493 apic_cpcovf_mask_clear; 494 } 495 apic_reg_ops->apic_write(APIC_PCINT_VECT, 496 apic_cpcovf_vect); 497 } 498 } 499 500 if (nlvt >= 6) { 501 /* Only mask TM intr if the BIOS apparently doesn't use it */ 502 503 uint32_t lvtval; 504 505 lvtval = apic_reg_ops->apic_read(APIC_THERM_VECT); 506 if (((lvtval & AV_MASK) == AV_MASK) || 507 ((lvtval & AV_DELIV_MODE) != AV_SMI)) { 508 apic_reg_ops->apic_write(APIC_THERM_VECT, 509 AV_MASK|APIC_RESV_IRQ); 510 } 511 } 512 513 /* Enable error interrupt */ 514 515 if (nlvt >= 4 && apic_enable_error_intr) { 516 if (apic_errvect == 0) { 517 int ipl = 0xf; /* get highest priority intr */ 518 apic_errvect = apix_get_ipivect(ipl, -1); 519 ASSERT(apic_errvect); 520 /* 521 * Not PSMI compliant, but we are going to merge 522 * with ON anyway 523 */ 524 (void) add_avintr(NULL, ipl, 525 (avfunc)apic_error_intr, "apic error intr", 526 apic_errvect, NULL, NULL, NULL, NULL); 527 } 528 apic_reg_ops->apic_write(APIC_ERR_VECT, apic_errvect); 529 apic_reg_ops->apic_write(APIC_ERROR_STATUS, 0); 530 apic_reg_ops->apic_write(APIC_ERROR_STATUS, 0); 531 } 532 533 /* Enable CMCI interrupt */ 534 if (cmi_enable_cmci) { 535 mutex_enter(&cmci_cpu_setup_lock); 536 if (cmci_cpu_setup_registered == 0) { 537 mutex_enter(&cpu_lock); 538 register_cpu_setup_func(cmci_cpu_setup, NULL); 539 mutex_exit(&cpu_lock); 540 cmci_cpu_setup_registered = 1; 541 } 542 mutex_exit(&cmci_cpu_setup_lock); 543 544 if (apic_cmci_vect == 0) { 545 int ipl = 0x2; 546 apic_cmci_vect = apix_get_ipivect(ipl, -1); 547 ASSERT(apic_cmci_vect); 548 549 (void) add_avintr(NULL, ipl, 550 (avfunc)cmi_cmci_trap, "apic cmci intr", 551 apic_cmci_vect, NULL, NULL, NULL, NULL); 552 } 553 apic_reg_ops->apic_write(APIC_CMCI_VECT, apic_cmci_vect); 554 } 555 556 apic_reg_ops->apic_write_task_reg(0); 557 } 558 559 static void 560 apix_picinit(void) 561 { 562 int i, j; 563 uint_t isr; 564 565 APIC_VERBOSE(INIT, (CE_CONT, "apix: psm_picinit\n")); 566 567 /* 568 * initialize interrupt remapping before apic 569 * hardware initialization 570 */ 571 apic_intrmap_init(apic_mode); 572 if (apic_vt_ops == psm_vt_ops) 573 apix_mul_ioapic_method = APIC_MUL_IOAPIC_IIR; 574 575 /* 576 * On UniSys Model 6520, the BIOS leaves vector 0x20 isr 577 * bit on without clearing it with EOI. Since softint 578 * uses vector 0x20 to interrupt itself, so softint will 579 * not work on this machine. In order to fix this problem 580 * a check is made to verify all the isr bits are clear. 581 * If not, EOIs are issued to clear the bits. 582 */ 583 for (i = 7; i >= 1; i--) { 584 isr = apic_reg_ops->apic_read(APIC_ISR_REG + (i * 4)); 585 if (isr != 0) 586 for (j = 0; ((j < 32) && (isr != 0)); j++) 587 if (isr & (1 << j)) { 588 apic_reg_ops->apic_write( 589 APIC_EOI_REG, 0); 590 isr &= ~(1 << j); 591 apic_error |= APIC_ERR_BOOT_EOI; 592 } 593 } 594 595 /* set a flag so we know we have run apic_picinit() */ 596 apic_picinit_called = 1; 597 LOCK_INIT_CLEAR(&apic_gethrtime_lock); 598 LOCK_INIT_CLEAR(&apic_ioapic_lock); 599 LOCK_INIT_CLEAR(&apic_error_lock); 600 LOCK_INIT_CLEAR(&apic_mode_switch_lock); 601 602 picsetup(); /* initialise the 8259 */ 603 604 /* add nmi handler - least priority nmi handler */ 605 LOCK_INIT_CLEAR(&apic_nmi_lock); 606 607 if (!psm_add_nmintr(0, (avfunc) apic_nmi_intr, 608 "apix NMI handler", (caddr_t)NULL)) 609 cmn_err(CE_WARN, "apix: Unable to add nmi handler"); 610 611 apix_init_intr(); 612 613 /* enable apic mode if imcr present */ 614 if (apic_imcrp) { 615 outb(APIC_IMCR_P1, (uchar_t)APIC_IMCR_SELECT); 616 outb(APIC_IMCR_P2, (uchar_t)APIC_IMCR_APIC); 617 } 618 619 ioapix_init_intr(IOAPIC_MASK); 620 621 /* setup global IRM pool if applicable */ 622 if (irm_enable) 623 apix_irm_init(); 624 } 625 626 static __inline__ void 627 apix_send_eoi(void) 628 { 629 if (apic_mode == LOCAL_APIC) 630 LOCAL_APIC_WRITE_REG(APIC_EOI_REG, 0); 631 else 632 X2APIC_WRITE(APIC_EOI_REG, 0); 633 } 634 635 /* 636 * platform_intr_enter 637 * 638 * Called at the beginning of the interrupt service routine to 639 * mask all level equal to and below the interrupt priority 640 * of the interrupting vector. An EOI should be given to 641 * the interrupt controller to enable other HW interrupts. 642 * 643 * Return -1 for spurious interrupts 644 * 645 */ 646 static int 647 apix_intr_enter(int ipl, int *vectorp) 648 { 649 struct cpu *cpu = CPU; 650 uint32_t cpuid = CPU->cpu_id; 651 apic_cpus_info_t *cpu_infop; 652 uchar_t vector; 653 apix_vector_t *vecp; 654 int nipl = -1; 655 656 /* 657 * The real vector delivered is (*vectorp + 0x20), but our caller 658 * subtracts 0x20 from the vector before passing it to us. 659 * (That's why APIC_BASE_VECT is 0x20.) 660 */ 661 vector = *vectorp = (uchar_t)*vectorp + APIC_BASE_VECT; 662 663 cpu_infop = &apic_cpus[cpuid]; 664 if (vector == APIC_SPUR_INTR) { 665 cpu_infop->aci_spur_cnt++; 666 return (APIC_INT_SPURIOUS); 667 } 668 669 vecp = xv_vector(cpuid, vector); 670 if (vecp == NULL) { 671 if (APIX_IS_FAKE_INTR(vector)) 672 nipl = apix_rebindinfo.i_pri; 673 apix_send_eoi(); 674 return (nipl); 675 } 676 nipl = vecp->v_pri; 677 678 /* if interrupted by the clock, increment apic_nsec_since_boot */ 679 if (vector == (apic_clkvect + APIC_BASE_VECT)) { 680 if (!apic_oneshot) { 681 /* NOTE: this is not MT aware */ 682 apic_hrtime_stamp++; 683 apic_nsec_since_boot += apic_nsec_per_intr; 684 apic_hrtime_stamp++; 685 last_count_read = apic_hertz_count; 686 apix_redistribute_compute(); 687 } 688 689 apix_send_eoi(); 690 691 return (nipl); 692 } 693 694 ASSERT(vecp->v_state != APIX_STATE_OBSOLETED); 695 696 /* pre-EOI handling for level-triggered interrupts */ 697 if (!APIX_IS_DIRECTED_EOI(apix_mul_ioapic_method) && 698 (vecp->v_type & APIX_TYPE_FIXED) && apic_level_intr[vecp->v_inum]) 699 apix_level_intr_pre_eoi(vecp->v_inum); 700 701 /* send back EOI */ 702 apix_send_eoi(); 703 704 cpu_infop->aci_current[nipl] = vector; 705 if ((nipl > ipl) && (nipl > cpu->cpu_base_spl)) { 706 cpu_infop->aci_curipl = (uchar_t)nipl; 707 cpu_infop->aci_ISR_in_progress |= 1 << nipl; 708 } 709 710 #ifdef DEBUG 711 if (vector >= APIX_IPI_MIN) 712 return (nipl); /* skip IPI */ 713 714 APIC_DEBUG_BUF_PUT(vector); 715 APIC_DEBUG_BUF_PUT(vecp->v_inum); 716 APIC_DEBUG_BUF_PUT(nipl); 717 APIC_DEBUG_BUF_PUT(psm_get_cpu_id()); 718 if ((apic_stretch_interrupts) && (apic_stretch_ISR & (1 << nipl))) 719 drv_usecwait(apic_stretch_interrupts); 720 #endif /* DEBUG */ 721 722 return (nipl); 723 } 724 725 /* 726 * Any changes made to this function must also change X2APIC 727 * version of intr_exit. 728 */ 729 static void 730 apix_intr_exit(int prev_ipl, int arg2) 731 { 732 int cpuid = psm_get_cpu_id(); 733 apic_cpus_info_t *cpu_infop = &apic_cpus[cpuid]; 734 apix_impl_t *apixp = apixs[cpuid]; 735 736 UNREFERENCED_1PARAMETER(arg2); 737 738 cpu_infop->aci_curipl = (uchar_t)prev_ipl; 739 /* ISR above current pri could not be in progress */ 740 cpu_infop->aci_ISR_in_progress &= (2 << prev_ipl) - 1; 741 742 if (apixp->x_obsoletes != NULL) { 743 if (APIX_CPU_LOCK_HELD(cpuid)) 744 return; 745 746 APIX_ENTER_CPU_LOCK(cpuid); 747 (void) apix_obsolete_vector(apixp->x_obsoletes); 748 APIX_LEAVE_CPU_LOCK(cpuid); 749 } 750 } 751 752 /* 753 * Mask all interrupts below or equal to the given IPL. 754 * Any changes made to this function must also change X2APIC 755 * version of setspl. 756 */ 757 static void 758 apix_setspl(int ipl) 759 { 760 /* interrupts at ipl above this cannot be in progress */ 761 apic_cpus[psm_get_cpu_id()].aci_ISR_in_progress &= (2 << ipl) - 1; 762 763 /* 764 * Mask all interrupts for XC_HI_PIL (i.e set TPR to 0xf). 765 * Otherwise, enable all interrupts (i.e. set TPR to 0). 766 */ 767 if (ipl != XC_HI_PIL) 768 ipl = 0; 769 770 #if defined(__amd64) 771 setcr8((ulong_t)ipl); 772 #else 773 if (apic_have_32bit_cr8) 774 setcr8((ulong_t)ipl); 775 else 776 apicadr[APIC_TASK_REG] = ipl << APIC_IPL_SHIFT; 777 #endif 778 779 /* 780 * this is a patch fix for the ALR QSMP P5 machine, so that interrupts 781 * have enough time to come in before the priority is raised again 782 * during the idle() loop. 783 */ 784 if (apic_setspl_delay) 785 (void) apic_reg_ops->apic_get_pri(); 786 } 787 788 /* 789 * X2APIC version of setspl. 790 */ 791 static void 792 x2apix_setspl(int ipl) 793 { 794 /* interrupts at ipl above this cannot be in progress */ 795 apic_cpus[psm_get_cpu_id()].aci_ISR_in_progress &= (2 << ipl) - 1; 796 797 /* 798 * Mask all interrupts for XC_HI_PIL (i.e set TPR to 0xf). 799 * Otherwise, enable all interrupts (i.e. set TPR to 0). 800 */ 801 if (ipl != XC_HI_PIL) 802 ipl = 0; 803 804 X2APIC_WRITE(APIC_TASK_REG, ipl << APIC_IPL_SHIFT); 805 } 806 807 int 808 apix_addspl(int virtvec, int ipl, int min_ipl, int max_ipl) 809 { 810 uint32_t cpuid = APIX_VIRTVEC_CPU(virtvec); 811 uchar_t vector = (uchar_t)APIX_VIRTVEC_VECTOR(virtvec); 812 apix_vector_t *vecp = xv_vector(cpuid, vector); 813 814 UNREFERENCED_3PARAMETER(ipl, min_ipl, max_ipl); 815 ASSERT(vecp != NULL && LOCK_HELD(&apix_lock)); 816 817 if (vecp->v_type == APIX_TYPE_FIXED) 818 apix_intx_set_shared(vecp->v_inum, 1); 819 820 /* There are more interrupts, so it's already been enabled */ 821 if (vecp->v_share > 1) 822 return (PSM_SUCCESS); 823 824 /* return if it is not hardware interrupt */ 825 if (vecp->v_type == APIX_TYPE_IPI) 826 return (PSM_SUCCESS); 827 828 /* 829 * if apix_picinit() has not been called yet, just return. 830 * At the end of apic_picinit(), we will call setup_io_intr(). 831 */ 832 if (!apic_picinit_called) 833 return (PSM_SUCCESS); 834 835 (void) apix_setup_io_intr(vecp); 836 837 return (PSM_SUCCESS); 838 } 839 840 int 841 apix_delspl(int virtvec, int ipl, int min_ipl, int max_ipl) 842 { 843 uint32_t cpuid = APIX_VIRTVEC_CPU(virtvec); 844 uchar_t vector = (uchar_t)APIX_VIRTVEC_VECTOR(virtvec); 845 apix_vector_t *vecp = xv_vector(cpuid, vector); 846 847 UNREFERENCED_3PARAMETER(ipl, min_ipl, max_ipl); 848 ASSERT(vecp != NULL && LOCK_HELD(&apix_lock)); 849 850 if (vecp->v_type == APIX_TYPE_FIXED) 851 apix_intx_set_shared(vecp->v_inum, -1); 852 853 /* There are more interrupts */ 854 if (vecp->v_share > 1) 855 return (PSM_SUCCESS); 856 857 /* return if it is not hardware interrupt */ 858 if (vecp->v_type == APIX_TYPE_IPI) 859 return (PSM_SUCCESS); 860 861 if (!apic_picinit_called) { 862 cmn_err(CE_WARN, "apix: delete 0x%x before apic init", 863 virtvec); 864 return (PSM_SUCCESS); 865 } 866 867 apix_disable_vector(vecp); 868 869 return (PSM_SUCCESS); 870 } 871 872 /* 873 * Try and disable all interrupts. We just assign interrupts to other 874 * processors based on policy. If any were bound by user request, we 875 * let them continue and return failure. We do not bother to check 876 * for cache affinity while rebinding. 877 */ 878 static int 879 apix_disable_intr(processorid_t cpun) 880 { 881 apix_impl_t *apixp = apixs[cpun]; 882 apix_vector_t *vecp, *newp; 883 int bindcpu, i, hardbound = 0, errbound = 0, ret, loop, type; 884 885 lock_set(&apix_lock); 886 887 apic_cpus[cpun].aci_status &= ~APIC_CPU_INTR_ENABLE; 888 apic_cpus[cpun].aci_curipl = 0; 889 890 /* if this is for SUSPEND operation, skip rebinding */ 891 if (apic_cpus[cpun].aci_status & APIC_CPU_SUSPEND) { 892 for (i = APIX_AVINTR_MIN; i <= APIX_AVINTR_MAX; i++) { 893 vecp = apixp->x_vectbl[i]; 894 if (!IS_VECT_ENABLED(vecp)) 895 continue; 896 897 apix_disable_vector(vecp); 898 } 899 lock_clear(&apix_lock); 900 return (PSM_SUCCESS); 901 } 902 903 for (i = APIX_AVINTR_MIN; i <= APIX_AVINTR_MAX; i++) { 904 vecp = apixp->x_vectbl[i]; 905 if (!IS_VECT_ENABLED(vecp)) 906 continue; 907 908 if (vecp->v_flags & APIX_VECT_USER_BOUND) { 909 hardbound++; 910 continue; 911 } 912 type = vecp->v_type; 913 914 /* 915 * If there are bound interrupts on this cpu, then 916 * rebind them to other processors. 917 */ 918 loop = 0; 919 do { 920 bindcpu = apic_find_cpu(APIC_CPU_INTR_ENABLE); 921 922 if (type != APIX_TYPE_MSI) 923 newp = apix_set_cpu(vecp, bindcpu, &ret); 924 else 925 newp = apix_grp_set_cpu(vecp, bindcpu, &ret); 926 } while ((newp == NULL) && (loop++ < apic_nproc)); 927 928 if (loop >= apic_nproc) { 929 errbound++; 930 cmn_err(CE_WARN, "apix: failed to rebind vector %x/%x", 931 vecp->v_cpuid, vecp->v_vector); 932 } 933 } 934 935 lock_clear(&apix_lock); 936 937 if (hardbound || errbound) { 938 cmn_err(CE_WARN, "Could not disable interrupts on %d" 939 "due to user bound interrupts or failed operation", 940 cpun); 941 return (PSM_FAILURE); 942 } 943 944 return (PSM_SUCCESS); 945 } 946 947 /* 948 * Bind interrupts to specified CPU 949 */ 950 static void 951 apix_enable_intr(processorid_t cpun) 952 { 953 apix_vector_t *vecp; 954 int i, ret; 955 processorid_t n; 956 957 lock_set(&apix_lock); 958 959 apic_cpus[cpun].aci_status |= APIC_CPU_INTR_ENABLE; 960 961 /* interrupt enabling for system resume */ 962 if (apic_cpus[cpun].aci_status & APIC_CPU_SUSPEND) { 963 for (i = APIX_AVINTR_MIN; i <= APIX_AVINTR_MAX; i++) { 964 vecp = xv_vector(cpun, i); 965 if (!IS_VECT_ENABLED(vecp)) 966 continue; 967 968 apix_enable_vector(vecp); 969 } 970 apic_cpus[cpun].aci_status &= ~APIC_CPU_SUSPEND; 971 } 972 973 for (n = 0; n < apic_nproc; n++) { 974 if (!apic_cpu_in_range(n) || n == cpun || 975 (apic_cpus[n].aci_status & APIC_CPU_INTR_ENABLE) == 0) 976 continue; 977 978 for (i = APIX_AVINTR_MIN; i <= APIX_AVINTR_MAX; i++) { 979 vecp = xv_vector(n, i); 980 if (!IS_VECT_ENABLED(vecp) || 981 vecp->v_bound_cpuid != cpun) 982 continue; 983 984 if (vecp->v_type != APIX_TYPE_MSI) 985 (void) apix_set_cpu(vecp, cpun, &ret); 986 else 987 (void) apix_grp_set_cpu(vecp, cpun, &ret); 988 } 989 } 990 991 lock_clear(&apix_lock); 992 } 993 994 /* 995 * Allocate vector for IPI 996 * type == -1 indicates it is an internal request. Do not change 997 * resv_vector for these requests. 998 */ 999 static int 1000 apix_get_ipivect(int ipl, int type) 1001 { 1002 uchar_t vector; 1003 1004 if ((vector = apix_alloc_ipi(ipl)) > 0) { 1005 if (type != -1) 1006 apic_resv_vector[ipl] = vector; 1007 return (vector); 1008 } 1009 apic_error |= APIC_ERR_GET_IPIVECT_FAIL; 1010 return (-1); /* shouldn't happen */ 1011 } 1012 1013 static int 1014 apix_get_clkvect(int ipl) 1015 { 1016 int vector; 1017 1018 if ((vector = apix_get_ipivect(ipl, -1)) == -1) 1019 return (-1); 1020 1021 apic_clkvect = vector - APIC_BASE_VECT; 1022 APIC_VERBOSE(IPI, (CE_CONT, "apix: clock vector = %x\n", 1023 apic_clkvect)); 1024 return (vector); 1025 } 1026 1027 static int 1028 apix_post_cpu_start() 1029 { 1030 int cpun; 1031 static int cpus_started = 1; 1032 1033 /* We know this CPU + BSP started successfully. */ 1034 cpus_started++; 1035 1036 /* 1037 * On BSP we would have enabled X2APIC, if supported by processor, 1038 * in acpi_probe(), but on AP we do it here. 1039 * 1040 * We enable X2APIC mode only if BSP is running in X2APIC & the 1041 * local APIC mode of the current CPU is MMIO (xAPIC). 1042 */ 1043 if (apic_mode == LOCAL_X2APIC && apic_detect_x2apic() && 1044 apic_local_mode() == LOCAL_APIC) { 1045 apic_enable_x2apic(); 1046 } 1047 1048 /* 1049 * Switch back to x2apic IPI sending method for performance when target 1050 * CPU has entered x2apic mode. 1051 */ 1052 if (apic_mode == LOCAL_X2APIC) { 1053 apic_switch_ipi_callback(B_FALSE); 1054 } 1055 1056 splx(ipltospl(LOCK_LEVEL)); 1057 apix_init_intr(); 1058 1059 /* 1060 * since some systems don't enable the internal cache on the non-boot 1061 * cpus, so we have to enable them here 1062 */ 1063 setcr0(getcr0() & ~(CR0_CD | CR0_NW)); 1064 1065 #ifdef DEBUG 1066 APIC_AV_PENDING_SET(); 1067 #else 1068 if (apic_mode == LOCAL_APIC) 1069 APIC_AV_PENDING_SET(); 1070 #endif /* DEBUG */ 1071 1072 /* 1073 * We may be booting, or resuming from suspend; aci_status will 1074 * be APIC_CPU_INTR_ENABLE if coming from suspend, so we add the 1075 * APIC_CPU_ONLINE flag here rather than setting aci_status completely. 1076 */ 1077 cpun = psm_get_cpu_id(); 1078 apic_cpus[cpun].aci_status |= APIC_CPU_ONLINE; 1079 1080 apic_reg_ops->apic_write(APIC_DIVIDE_REG, apic_divide_reg_init); 1081 1082 return (PSM_SUCCESS); 1083 } 1084 1085 /* 1086 * If this module needs a periodic handler for the interrupt distribution, it 1087 * can be added here. The argument to the periodic handler is not currently 1088 * used, but is reserved for future. 1089 */ 1090 static void 1091 apix_post_cyclic_setup(void *arg) 1092 { 1093 UNREFERENCED_1PARAMETER(arg); 1094 1095 /* cpu_lock is held */ 1096 /* set up a periodic handler for intr redistribution */ 1097 1098 /* 1099 * In peridoc mode intr redistribution processing is done in 1100 * apic_intr_enter during clk intr processing 1101 */ 1102 if (!apic_oneshot) 1103 return; 1104 1105 /* 1106 * Register a periodical handler for the redistribution processing. 1107 * On X86, CY_LOW_LEVEL is mapped to the level 2 interrupt, so 1108 * DDI_IPL_2 should be passed to ddi_periodic_add() here. 1109 */ 1110 apic_periodic_id = ddi_periodic_add( 1111 (void (*)(void *))apix_redistribute_compute, NULL, 1112 apic_redistribute_sample_interval, DDI_IPL_2); 1113 } 1114 1115 void 1116 x2apic_update_psm() 1117 { 1118 struct psm_ops *pops = &apix_ops; 1119 1120 ASSERT(pops != NULL); 1121 1122 /* 1123 * The xxx_intr_exit() sets TPR and sends back EOI. The 1124 * xxx_setspl() sets TPR. These two routines are not 1125 * needed in new design. 1126 * 1127 * pops->psm_intr_exit = x2apic_intr_exit; 1128 * pops->psm_setspl = x2apic_setspl; 1129 */ 1130 pops->psm_setspl = x2apix_setspl; 1131 pops->psm_send_ipi = x2apic_send_ipi; 1132 1133 send_dirintf = pops->psm_send_ipi; 1134 1135 apic_mode = LOCAL_X2APIC; 1136 apic_change_ops(); 1137 } 1138 1139 /* 1140 * This function provides external interface to the nexus for all 1141 * functionalities related to the new DDI interrupt framework. 1142 * 1143 * Input: 1144 * dip - pointer to the dev_info structure of the requested device 1145 * hdlp - pointer to the internal interrupt handle structure for the 1146 * requested interrupt 1147 * intr_op - opcode for this call 1148 * result - pointer to the integer that will hold the result to be 1149 * passed back if return value is PSM_SUCCESS 1150 * 1151 * Output: 1152 * return value is either PSM_SUCCESS or PSM_FAILURE 1153 */ 1154 static int 1155 apix_intr_ops(dev_info_t *dip, ddi_intr_handle_impl_t *hdlp, 1156 psm_intr_op_t intr_op, int *result) 1157 { 1158 int cap; 1159 apix_vector_t *vecp, *newvecp; 1160 struct intrspec *ispec, intr_spec; 1161 processorid_t target; 1162 1163 ispec = &intr_spec; 1164 ispec->intrspec_pri = hdlp->ih_pri; 1165 ispec->intrspec_vec = hdlp->ih_inum; 1166 ispec->intrspec_func = hdlp->ih_cb_func; 1167 1168 switch (intr_op) { 1169 case PSM_INTR_OP_ALLOC_VECTORS: 1170 switch (hdlp->ih_type) { 1171 case DDI_INTR_TYPE_MSI: 1172 /* allocate MSI vectors */ 1173 *result = apix_alloc_msi(dip, hdlp->ih_inum, 1174 hdlp->ih_scratch1, 1175 (int)(uintptr_t)hdlp->ih_scratch2); 1176 break; 1177 case DDI_INTR_TYPE_MSIX: 1178 /* allocate MSI-X vectors */ 1179 *result = apix_alloc_msix(dip, hdlp->ih_inum, 1180 hdlp->ih_scratch1, 1181 (int)(uintptr_t)hdlp->ih_scratch2); 1182 break; 1183 case DDI_INTR_TYPE_FIXED: 1184 /* allocate or share vector for fixed */ 1185 if ((ihdl_plat_t *)hdlp->ih_private == NULL) { 1186 return (PSM_FAILURE); 1187 } 1188 ispec = ((ihdl_plat_t *)hdlp->ih_private)->ip_ispecp; 1189 *result = apix_intx_alloc_vector(dip, hdlp->ih_inum, 1190 ispec); 1191 break; 1192 default: 1193 return (PSM_FAILURE); 1194 } 1195 break; 1196 case PSM_INTR_OP_FREE_VECTORS: 1197 apix_free_vectors(dip, hdlp->ih_inum, hdlp->ih_scratch1, 1198 hdlp->ih_type); 1199 break; 1200 case PSM_INTR_OP_XLATE_VECTOR: 1201 /* 1202 * Vectors are allocated by ALLOC and freed by FREE. 1203 * XLATE finds and returns APIX_VIRTVEC_VECTOR(cpu, vector). 1204 */ 1205 *result = APIX_INVALID_VECT; 1206 vecp = apix_get_dev_map(dip, hdlp->ih_inum, hdlp->ih_type); 1207 if (vecp != NULL) { 1208 *result = APIX_VIRTVECTOR(vecp->v_cpuid, 1209 vecp->v_vector); 1210 break; 1211 } 1212 1213 /* 1214 * No vector to device mapping exists. If this is FIXED type 1215 * then check if this IRQ is already mapped for another device 1216 * then return the vector number for it (i.e. shared IRQ case). 1217 * Otherwise, return PSM_FAILURE. 1218 */ 1219 if (hdlp->ih_type == DDI_INTR_TYPE_FIXED) { 1220 vecp = apix_intx_xlate_vector(dip, hdlp->ih_inum, 1221 ispec); 1222 *result = (vecp == NULL) ? APIX_INVALID_VECT : 1223 APIX_VIRTVECTOR(vecp->v_cpuid, vecp->v_vector); 1224 } 1225 if (*result == APIX_INVALID_VECT) 1226 return (PSM_FAILURE); 1227 break; 1228 case PSM_INTR_OP_GET_PENDING: 1229 vecp = apix_get_dev_map(dip, hdlp->ih_inum, hdlp->ih_type); 1230 if (vecp == NULL) 1231 return (PSM_FAILURE); 1232 1233 *result = apix_get_pending(vecp); 1234 break; 1235 case PSM_INTR_OP_CLEAR_MASK: 1236 if (hdlp->ih_type != DDI_INTR_TYPE_FIXED) 1237 return (PSM_FAILURE); 1238 1239 vecp = apix_get_dev_map(dip, hdlp->ih_inum, hdlp->ih_type); 1240 if (vecp == NULL) 1241 return (PSM_FAILURE); 1242 1243 apix_intx_clear_mask(vecp->v_inum); 1244 break; 1245 case PSM_INTR_OP_SET_MASK: 1246 if (hdlp->ih_type != DDI_INTR_TYPE_FIXED) 1247 return (PSM_FAILURE); 1248 1249 vecp = apix_get_dev_map(dip, hdlp->ih_inum, hdlp->ih_type); 1250 if (vecp == NULL) 1251 return (PSM_FAILURE); 1252 1253 apix_intx_set_mask(vecp->v_inum); 1254 break; 1255 case PSM_INTR_OP_GET_SHARED: 1256 if (hdlp->ih_type != DDI_INTR_TYPE_FIXED) 1257 return (PSM_FAILURE); 1258 1259 vecp = apix_get_dev_map(dip, hdlp->ih_inum, hdlp->ih_type); 1260 if (vecp == NULL) 1261 return (PSM_FAILURE); 1262 1263 *result = apix_intx_get_shared(vecp->v_inum); 1264 break; 1265 case PSM_INTR_OP_SET_PRI: 1266 /* 1267 * Called prior to adding the interrupt handler or when 1268 * an interrupt handler is unassigned. 1269 */ 1270 if (hdlp->ih_type == DDI_INTR_TYPE_FIXED) 1271 return (PSM_SUCCESS); 1272 1273 if (apix_get_dev_map(dip, hdlp->ih_inum, hdlp->ih_type) == NULL) 1274 return (PSM_FAILURE); 1275 1276 break; 1277 case PSM_INTR_OP_SET_CPU: 1278 case PSM_INTR_OP_GRP_SET_CPU: 1279 /* 1280 * The interrupt handle given here has been allocated 1281 * specifically for this command, and ih_private carries 1282 * a CPU value. 1283 */ 1284 *result = EINVAL; 1285 target = (int)(intptr_t)hdlp->ih_private; 1286 if (!apic_cpu_in_range(target)) { 1287 DDI_INTR_IMPLDBG((CE_WARN, 1288 "[grp_]set_cpu: cpu out of range: %d\n", target)); 1289 return (PSM_FAILURE); 1290 } 1291 1292 lock_set(&apix_lock); 1293 1294 vecp = apix_get_req_vector(hdlp, hdlp->ih_flags); 1295 if (!IS_VECT_ENABLED(vecp)) { 1296 DDI_INTR_IMPLDBG((CE_WARN, 1297 "[grp]_set_cpu: invalid vector 0x%x\n", 1298 hdlp->ih_vector)); 1299 lock_clear(&apix_lock); 1300 return (PSM_FAILURE); 1301 } 1302 1303 *result = 0; 1304 1305 if (intr_op == PSM_INTR_OP_SET_CPU) 1306 newvecp = apix_set_cpu(vecp, target, result); 1307 else 1308 newvecp = apix_grp_set_cpu(vecp, target, result); 1309 1310 lock_clear(&apix_lock); 1311 1312 if (newvecp == NULL) { 1313 *result = EIO; 1314 return (PSM_FAILURE); 1315 } 1316 newvecp->v_bound_cpuid = target; 1317 hdlp->ih_vector = APIX_VIRTVECTOR(newvecp->v_cpuid, 1318 newvecp->v_vector); 1319 break; 1320 1321 case PSM_INTR_OP_GET_INTR: 1322 /* 1323 * The interrupt handle given here has been allocated 1324 * specifically for this command, and ih_private carries 1325 * a pointer to a apic_get_intr_t. 1326 */ 1327 if (apix_get_intr_info(hdlp, hdlp->ih_private) != PSM_SUCCESS) 1328 return (PSM_FAILURE); 1329 break; 1330 1331 case PSM_INTR_OP_CHECK_MSI: 1332 /* 1333 * Check MSI/X is supported or not at APIC level and 1334 * masked off the MSI/X bits in hdlp->ih_type if not 1335 * supported before return. If MSI/X is supported, 1336 * leave the ih_type unchanged and return. 1337 * 1338 * hdlp->ih_type passed in from the nexus has all the 1339 * interrupt types supported by the device. 1340 */ 1341 if (apic_support_msi == 0) { /* uninitialized */ 1342 /* 1343 * if apic_support_msi is not set, call 1344 * apic_check_msi_support() to check whether msi 1345 * is supported first 1346 */ 1347 if (apic_check_msi_support() == PSM_SUCCESS) 1348 apic_support_msi = 1; /* supported */ 1349 else 1350 apic_support_msi = -1; /* not-supported */ 1351 } 1352 if (apic_support_msi == 1) { 1353 if (apic_msix_enable) 1354 *result = hdlp->ih_type; 1355 else 1356 *result = hdlp->ih_type & ~DDI_INTR_TYPE_MSIX; 1357 } else 1358 *result = hdlp->ih_type & ~(DDI_INTR_TYPE_MSI | 1359 DDI_INTR_TYPE_MSIX); 1360 break; 1361 case PSM_INTR_OP_GET_CAP: 1362 cap = DDI_INTR_FLAG_PENDING; 1363 if (hdlp->ih_type == DDI_INTR_TYPE_FIXED) 1364 cap |= DDI_INTR_FLAG_MASKABLE; 1365 *result = cap; 1366 break; 1367 case PSM_INTR_OP_APIC_TYPE: 1368 ((apic_get_type_t *)(hdlp->ih_private))->avgi_type = 1369 apix_get_apic_type(); 1370 ((apic_get_type_t *)(hdlp->ih_private))->avgi_num_intr = 1371 APIX_IPI_MIN; 1372 ((apic_get_type_t *)(hdlp->ih_private))->avgi_num_cpu = 1373 apic_nproc; 1374 hdlp->ih_ver = apic_get_apic_version(); 1375 break; 1376 case PSM_INTR_OP_SET_CAP: 1377 default: 1378 return (PSM_FAILURE); 1379 } 1380 1381 return (PSM_SUCCESS); 1382 } 1383 1384 static void 1385 apix_cleanup_busy(void) 1386 { 1387 int i, j; 1388 apix_vector_t *vecp; 1389 1390 for (i = 0; i < apic_nproc; i++) { 1391 if (!apic_cpu_in_range(i)) 1392 continue; 1393 apic_cpus[i].aci_busy = 0; 1394 for (j = APIX_AVINTR_MIN; j < APIX_AVINTR_MAX; j++) { 1395 if ((vecp = xv_vector(i, j)) != NULL) 1396 vecp->v_busy = 0; 1397 } 1398 } 1399 } 1400 1401 static void 1402 apix_redistribute_compute(void) 1403 { 1404 int i, j, max_busy; 1405 1406 if (!apic_enable_dynamic_migration) 1407 return; 1408 1409 if (++apic_nticks == apic_sample_factor_redistribution) { 1410 /* 1411 * Time to call apic_intr_redistribute(). 1412 * reset apic_nticks. This will cause max_busy 1413 * to be calculated below and if it is more than 1414 * apic_int_busy, we will do the whole thing 1415 */ 1416 apic_nticks = 0; 1417 } 1418 max_busy = 0; 1419 for (i = 0; i < apic_nproc; i++) { 1420 if (!apic_cpu_in_range(i)) 1421 continue; 1422 /* 1423 * Check if curipl is non zero & if ISR is in 1424 * progress 1425 */ 1426 if (((j = apic_cpus[i].aci_curipl) != 0) && 1427 (apic_cpus[i].aci_ISR_in_progress & (1 << j))) { 1428 1429 int vect; 1430 apic_cpus[i].aci_busy++; 1431 vect = apic_cpus[i].aci_current[j]; 1432 apixs[i]->x_vectbl[vect]->v_busy++; 1433 } 1434 1435 if (!apic_nticks && 1436 (apic_cpus[i].aci_busy > max_busy)) 1437 max_busy = apic_cpus[i].aci_busy; 1438 } 1439 if (!apic_nticks) { 1440 if (max_busy > apic_int_busy_mark) { 1441 /* 1442 * We could make the following check be 1443 * skipped > 1 in which case, we get a 1444 * redistribution at half the busy mark (due to 1445 * double interval). Need to be able to collect 1446 * more empirical data to decide if that is a 1447 * good strategy. Punt for now. 1448 */ 1449 apix_cleanup_busy(); 1450 apic_skipped_redistribute = 0; 1451 } else 1452 apic_skipped_redistribute++; 1453 } 1454 } 1455 1456 /* 1457 * intr_ops() service routines 1458 */ 1459 1460 static int 1461 apix_get_pending(apix_vector_t *vecp) 1462 { 1463 int bit, index, irr, pending; 1464 1465 /* need to get on the bound cpu */ 1466 mutex_enter(&cpu_lock); 1467 affinity_set(vecp->v_cpuid); 1468 1469 index = vecp->v_vector / 32; 1470 bit = vecp->v_vector % 32; 1471 irr = apic_reg_ops->apic_read(APIC_IRR_REG + index); 1472 1473 affinity_clear(); 1474 mutex_exit(&cpu_lock); 1475 1476 pending = (irr & (1 << bit)) ? 1 : 0; 1477 if (!pending && vecp->v_type == APIX_TYPE_FIXED) 1478 pending = apix_intx_get_pending(vecp->v_inum); 1479 1480 return (pending); 1481 } 1482 1483 static apix_vector_t * 1484 apix_get_req_vector(ddi_intr_handle_impl_t *hdlp, ushort_t flags) 1485 { 1486 apix_vector_t *vecp; 1487 processorid_t cpuid; 1488 int32_t virt_vec = 0; 1489 1490 switch (flags & PSMGI_INTRBY_FLAGS) { 1491 case PSMGI_INTRBY_IRQ: 1492 return (apix_intx_get_vector(hdlp->ih_vector)); 1493 case PSMGI_INTRBY_VEC: 1494 virt_vec = (virt_vec == 0) ? hdlp->ih_vector : virt_vec; 1495 1496 cpuid = APIX_VIRTVEC_CPU(virt_vec); 1497 if (!apic_cpu_in_range(cpuid)) 1498 return (NULL); 1499 1500 vecp = xv_vector(cpuid, APIX_VIRTVEC_VECTOR(virt_vec)); 1501 break; 1502 case PSMGI_INTRBY_DEFAULT: 1503 vecp = apix_get_dev_map(hdlp->ih_dip, hdlp->ih_inum, 1504 hdlp->ih_type); 1505 break; 1506 default: 1507 return (NULL); 1508 } 1509 1510 return (vecp); 1511 } 1512 1513 static int 1514 apix_get_intr_info(ddi_intr_handle_impl_t *hdlp, 1515 apic_get_intr_t *intr_params_p) 1516 { 1517 apix_vector_t *vecp; 1518 struct autovec *av_dev; 1519 int i; 1520 1521 vecp = apix_get_req_vector(hdlp, intr_params_p->avgi_req_flags); 1522 if (IS_VECT_FREE(vecp)) { 1523 intr_params_p->avgi_num_devs = 0; 1524 intr_params_p->avgi_cpu_id = 0; 1525 intr_params_p->avgi_req_flags = 0; 1526 return (PSM_SUCCESS); 1527 } 1528 1529 if (intr_params_p->avgi_req_flags & PSMGI_REQ_CPUID) { 1530 intr_params_p->avgi_cpu_id = vecp->v_cpuid; 1531 1532 /* Return user bound info for intrd. */ 1533 if (intr_params_p->avgi_cpu_id & IRQ_USER_BOUND) { 1534 intr_params_p->avgi_cpu_id &= ~IRQ_USER_BOUND; 1535 intr_params_p->avgi_cpu_id |= PSMGI_CPU_USER_BOUND; 1536 } 1537 } 1538 1539 if (intr_params_p->avgi_req_flags & PSMGI_REQ_VECTOR) 1540 intr_params_p->avgi_vector = vecp->v_vector; 1541 1542 if (intr_params_p->avgi_req_flags & 1543 (PSMGI_REQ_NUM_DEVS | PSMGI_REQ_GET_DEVS)) 1544 /* Get number of devices from apic_irq table shared field. */ 1545 intr_params_p->avgi_num_devs = vecp->v_share; 1546 1547 if (intr_params_p->avgi_req_flags & PSMGI_REQ_GET_DEVS) { 1548 1549 intr_params_p->avgi_req_flags |= PSMGI_REQ_NUM_DEVS; 1550 1551 /* Some devices have NULL dip. Don't count these. */ 1552 if (intr_params_p->avgi_num_devs > 0) { 1553 for (i = 0, av_dev = vecp->v_autovect; av_dev; 1554 av_dev = av_dev->av_link) { 1555 if (av_dev->av_vector && av_dev->av_dip) 1556 i++; 1557 } 1558 intr_params_p->avgi_num_devs = 1559 (uint8_t)MIN(intr_params_p->avgi_num_devs, i); 1560 } 1561 1562 /* There are no viable dips to return. */ 1563 if (intr_params_p->avgi_num_devs == 0) { 1564 intr_params_p->avgi_dip_list = NULL; 1565 1566 } else { /* Return list of dips */ 1567 1568 /* Allocate space in array for that number of devs. */ 1569 intr_params_p->avgi_dip_list = kmem_zalloc( 1570 intr_params_p->avgi_num_devs * 1571 sizeof (dev_info_t *), 1572 KM_NOSLEEP); 1573 if (intr_params_p->avgi_dip_list == NULL) { 1574 DDI_INTR_IMPLDBG((CE_WARN, 1575 "apix_get_vector_intr_info: no memory")); 1576 return (PSM_FAILURE); 1577 } 1578 1579 /* 1580 * Loop through the device list of the autovec table 1581 * filling in the dip array. 1582 * 1583 * Note that the autovect table may have some special 1584 * entries which contain NULL dips. These will be 1585 * ignored. 1586 */ 1587 for (i = 0, av_dev = vecp->v_autovect; av_dev; 1588 av_dev = av_dev->av_link) { 1589 if (av_dev->av_vector && av_dev->av_dip) 1590 intr_params_p->avgi_dip_list[i++] = 1591 av_dev->av_dip; 1592 } 1593 } 1594 } 1595 1596 return (PSM_SUCCESS); 1597 } 1598 1599 static char * 1600 apix_get_apic_type(void) 1601 { 1602 return (apix_psm_info.p_mach_idstring); 1603 } 1604 1605 apix_vector_t * 1606 apix_set_cpu(apix_vector_t *vecp, int new_cpu, int *result) 1607 { 1608 apix_vector_t *newp = NULL; 1609 dev_info_t *dip; 1610 int inum, cap_ptr; 1611 ddi_acc_handle_t handle; 1612 ddi_intr_msix_t *msix_p; 1613 ushort_t msix_ctrl; 1614 uintptr_t off; 1615 uint32_t mask; 1616 1617 ASSERT(LOCK_HELD(&apix_lock)); 1618 *result = ENXIO; 1619 1620 /* Fail if this is an MSI intr and is part of a group. */ 1621 if (vecp->v_type == APIX_TYPE_MSI) { 1622 if (i_ddi_intr_get_current_nintrs(APIX_GET_DIP(vecp)) > 1) 1623 return (NULL); 1624 else 1625 return (apix_grp_set_cpu(vecp, new_cpu, result)); 1626 } 1627 1628 /* 1629 * Mask MSI-X. It's unmasked when MSI-X gets enabled. 1630 */ 1631 if (vecp->v_type == APIX_TYPE_MSIX) { 1632 if ((dip = APIX_GET_DIP(vecp)) == NULL) 1633 return (NULL); 1634 inum = vecp->v_devp->dv_inum; 1635 1636 handle = i_ddi_get_pci_config_handle(dip); 1637 cap_ptr = i_ddi_get_msi_msix_cap_ptr(dip); 1638 msix_ctrl = pci_config_get16(handle, cap_ptr + PCI_MSIX_CTRL); 1639 if ((msix_ctrl & PCI_MSIX_FUNCTION_MASK) == 0) { 1640 /* 1641 * Function is not masked, then mask "inum"th 1642 * entry in the MSI-X table 1643 */ 1644 msix_p = i_ddi_get_msix(dip); 1645 off = (uintptr_t)msix_p->msix_tbl_addr + (inum * 1646 PCI_MSIX_VECTOR_SIZE) + PCI_MSIX_VECTOR_CTRL_OFFSET; 1647 mask = ddi_get32(msix_p->msix_tbl_hdl, (uint32_t *)off); 1648 ddi_put32(msix_p->msix_tbl_hdl, (uint32_t *)off, 1649 mask | 1); 1650 } 1651 } 1652 1653 *result = 0; 1654 1655 if ((newp = apix_rebind(vecp, new_cpu, 1)) == NULL) 1656 *result = EIO; 1657 1658 return (newp); 1659 } 1660 1661 /* 1662 * Set cpu for MSIs 1663 */ 1664 apix_vector_t * 1665 apix_grp_set_cpu(apix_vector_t *vecp, int new_cpu, int *result) 1666 { 1667 apix_vector_t *newp, *vp; 1668 uint32_t orig_cpu = vecp->v_cpuid; 1669 int orig_vect = vecp->v_vector; 1670 int i, num_vectors, cap_ptr, msi_mask_off; 1671 uint32_t msi_pvm; 1672 ushort_t msi_ctrl; 1673 ddi_acc_handle_t handle; 1674 dev_info_t *dip; 1675 1676 APIC_VERBOSE(INTR, (CE_CONT, "apix_grp_set_cpu: oldcpu: %x, vector: %x," 1677 " newcpu:%x\n", vecp->v_cpuid, vecp->v_vector, new_cpu)); 1678 1679 ASSERT(LOCK_HELD(&apix_lock)); 1680 1681 *result = ENXIO; 1682 1683 if (vecp->v_type != APIX_TYPE_MSI) { 1684 DDI_INTR_IMPLDBG((CE_WARN, "set_grp: intr not MSI\n")); 1685 return (NULL); 1686 } 1687 1688 if ((dip = APIX_GET_DIP(vecp)) == NULL) 1689 return (NULL); 1690 1691 num_vectors = i_ddi_intr_get_current_nintrs(dip); 1692 if ((num_vectors < 1) || ((num_vectors - 1) & orig_vect)) { 1693 APIC_VERBOSE(INTR, (CE_WARN, 1694 "set_grp: base vec not part of a grp or not aligned: " 1695 "vec:0x%x, num_vec:0x%x\n", orig_vect, num_vectors)); 1696 return (NULL); 1697 } 1698 1699 if (vecp->v_inum != apix_get_min_dev_inum(dip, vecp->v_type)) 1700 return (NULL); 1701 1702 *result = EIO; 1703 for (i = 1; i < num_vectors; i++) { 1704 if ((vp = xv_vector(orig_cpu, orig_vect + i)) == NULL) 1705 return (NULL); 1706 #ifdef DEBUG 1707 /* 1708 * Sanity check: CPU and dip is the same for all entries. 1709 * May be called when first msi to be enabled, at this time 1710 * add_avintr() is not called for other msi 1711 */ 1712 if ((vp->v_share != 0) && 1713 ((APIX_GET_DIP(vp) != dip) || 1714 (vp->v_cpuid != vecp->v_cpuid))) { 1715 APIC_VERBOSE(INTR, (CE_WARN, 1716 "set_grp: cpu or dip for vec 0x%x difft than for " 1717 "vec 0x%x\n", orig_vect, orig_vect + i)); 1718 APIC_VERBOSE(INTR, (CE_WARN, 1719 " cpu: %d vs %d, dip: 0x%p vs 0x%p\n", orig_cpu, 1720 vp->v_cpuid, (void *)dip, 1721 (void *)APIX_GET_DIP(vp))); 1722 return (NULL); 1723 } 1724 #endif /* DEBUG */ 1725 } 1726 1727 cap_ptr = i_ddi_get_msi_msix_cap_ptr(dip); 1728 handle = i_ddi_get_pci_config_handle(dip); 1729 msi_ctrl = pci_config_get16(handle, cap_ptr + PCI_MSI_CTRL); 1730 1731 /* MSI Per vector masking is supported. */ 1732 if (msi_ctrl & PCI_MSI_PVM_MASK) { 1733 if (msi_ctrl & PCI_MSI_64BIT_MASK) 1734 msi_mask_off = cap_ptr + PCI_MSI_64BIT_MASKBITS; 1735 else 1736 msi_mask_off = cap_ptr + PCI_MSI_32BIT_MASK; 1737 msi_pvm = pci_config_get32(handle, msi_mask_off); 1738 pci_config_put32(handle, msi_mask_off, (uint32_t)-1); 1739 APIC_VERBOSE(INTR, (CE_CONT, 1740 "set_grp: pvm supported. Mask set to 0x%x\n", 1741 pci_config_get32(handle, msi_mask_off))); 1742 } 1743 1744 if ((newp = apix_rebind(vecp, new_cpu, num_vectors)) != NULL) 1745 *result = 0; 1746 1747 /* Reenable vectors if per vector masking is supported. */ 1748 if (msi_ctrl & PCI_MSI_PVM_MASK) { 1749 pci_config_put32(handle, msi_mask_off, msi_pvm); 1750 APIC_VERBOSE(INTR, (CE_CONT, 1751 "set_grp: pvm supported. Mask restored to 0x%x\n", 1752 pci_config_get32(handle, msi_mask_off))); 1753 } 1754 1755 return (newp); 1756 } 1757 1758 void 1759 apix_intx_set_vector(int irqno, uint32_t cpuid, uchar_t vector) 1760 { 1761 apic_irq_t *irqp; 1762 1763 mutex_enter(&airq_mutex); 1764 irqp = apic_irq_table[irqno]; 1765 irqp->airq_cpu = cpuid; 1766 irqp->airq_vector = vector; 1767 apic_record_rdt_entry(irqp, irqno); 1768 mutex_exit(&airq_mutex); 1769 } 1770 1771 apix_vector_t * 1772 apix_intx_get_vector(int irqno) 1773 { 1774 apic_irq_t *irqp; 1775 uint32_t cpuid; 1776 uchar_t vector; 1777 1778 mutex_enter(&airq_mutex); 1779 irqp = apic_irq_table[irqno & 0xff]; 1780 if (IS_IRQ_FREE(irqp) || (irqp->airq_cpu == IRQ_UNINIT)) { 1781 mutex_exit(&airq_mutex); 1782 return (NULL); 1783 } 1784 cpuid = irqp->airq_cpu; 1785 vector = irqp->airq_vector; 1786 mutex_exit(&airq_mutex); 1787 1788 return (xv_vector(cpuid, vector)); 1789 } 1790 1791 /* 1792 * Must called with interrupts disabled and apic_ioapic_lock held 1793 */ 1794 void 1795 apix_intx_enable(int irqno) 1796 { 1797 uchar_t ioapicindex, intin; 1798 apic_irq_t *irqp = apic_irq_table[irqno]; 1799 ioapic_rdt_t irdt; 1800 apic_cpus_info_t *cpu_infop; 1801 apix_vector_t *vecp = xv_vector(irqp->airq_cpu, irqp->airq_vector); 1802 1803 ASSERT(LOCK_HELD(&apic_ioapic_lock) && !IS_IRQ_FREE(irqp)); 1804 1805 ioapicindex = irqp->airq_ioapicindex; 1806 intin = irqp->airq_intin_no; 1807 cpu_infop = &apic_cpus[irqp->airq_cpu]; 1808 1809 irdt.ir_lo = AV_PDEST | AV_FIXED | irqp->airq_rdt_entry; 1810 irdt.ir_hi = cpu_infop->aci_local_id; 1811 1812 apic_vt_ops->apic_intrmap_alloc_entry(&vecp->v_intrmap_private, NULL, 1813 vecp->v_type, 1, ioapicindex); 1814 apic_vt_ops->apic_intrmap_map_entry(vecp->v_intrmap_private, 1815 (void *)&irdt, vecp->v_type, 1); 1816 apic_vt_ops->apic_intrmap_record_rdt(vecp->v_intrmap_private, &irdt); 1817 1818 /* write RDT entry high dword - destination */ 1819 WRITE_IOAPIC_RDT_ENTRY_HIGH_DWORD(ioapicindex, intin, 1820 irdt.ir_hi); 1821 1822 /* Write the vector, trigger, and polarity portion of the RDT */ 1823 WRITE_IOAPIC_RDT_ENTRY_LOW_DWORD(ioapicindex, intin, irdt.ir_lo); 1824 1825 vecp->v_state = APIX_STATE_ENABLED; 1826 1827 APIC_VERBOSE_IOAPIC((CE_CONT, "apix_intx_enable: ioapic 0x%x" 1828 " intin 0x%x rdt_low 0x%x rdt_high 0x%x\n", 1829 ioapicindex, intin, irdt.ir_lo, irdt.ir_hi)); 1830 } 1831 1832 /* 1833 * Must called with interrupts disabled and apic_ioapic_lock held 1834 */ 1835 void 1836 apix_intx_disable(int irqno) 1837 { 1838 apic_irq_t *irqp = apic_irq_table[irqno]; 1839 int ioapicindex, intin; 1840 1841 ASSERT(LOCK_HELD(&apic_ioapic_lock) && !IS_IRQ_FREE(irqp)); 1842 /* 1843 * The assumption here is that this is safe, even for 1844 * systems with IOAPICs that suffer from the hardware 1845 * erratum because all devices have been quiesced before 1846 * they unregister their interrupt handlers. If that 1847 * assumption turns out to be false, this mask operation 1848 * can induce the same erratum result we're trying to 1849 * avoid. 1850 */ 1851 ioapicindex = irqp->airq_ioapicindex; 1852 intin = irqp->airq_intin_no; 1853 ioapic_write(ioapicindex, APIC_RDT_CMD + 2 * intin, AV_MASK); 1854 1855 APIC_VERBOSE_IOAPIC((CE_CONT, "apix_intx_disable: ioapic 0x%x" 1856 " intin 0x%x\n", ioapicindex, intin)); 1857 } 1858 1859 void 1860 apix_intx_free(int irqno) 1861 { 1862 apic_irq_t *irqp; 1863 1864 mutex_enter(&airq_mutex); 1865 irqp = apic_irq_table[irqno]; 1866 1867 if (IS_IRQ_FREE(irqp)) { 1868 mutex_exit(&airq_mutex); 1869 return; 1870 } 1871 1872 irqp->airq_mps_intr_index = FREE_INDEX; 1873 irqp->airq_cpu = IRQ_UNINIT; 1874 irqp->airq_vector = APIX_INVALID_VECT; 1875 mutex_exit(&airq_mutex); 1876 } 1877 1878 #ifdef DEBUG 1879 int apix_intr_deliver_timeouts = 0; 1880 int apix_intr_rirr_timeouts = 0; 1881 int apix_intr_rirr_reset_failure = 0; 1882 #endif 1883 int apix_max_reps_irr_pending = 10; 1884 1885 #define GET_RDT_BITS(ioapic, intin, bits) \ 1886 (READ_IOAPIC_RDT_ENTRY_LOW_DWORD((ioapic), (intin)) & (bits)) 1887 #define APIX_CHECK_IRR_DELAY drv_usectohz(5000) 1888 1889 int 1890 apix_intx_rebind(int irqno, processorid_t cpuid, uchar_t vector) 1891 { 1892 apic_irq_t *irqp = apic_irq_table[irqno]; 1893 ulong_t iflag; 1894 int waited, ioapic_ix, intin_no, level, repeats, rdt_entry, masked; 1895 1896 ASSERT(irqp != NULL); 1897 1898 iflag = intr_clear(); 1899 lock_set(&apic_ioapic_lock); 1900 1901 ioapic_ix = irqp->airq_ioapicindex; 1902 intin_no = irqp->airq_intin_no; 1903 level = apic_level_intr[irqno]; 1904 1905 /* 1906 * Wait for the delivery status bit to be cleared. This should 1907 * be a very small amount of time. 1908 */ 1909 repeats = 0; 1910 do { 1911 repeats++; 1912 1913 for (waited = 0; waited < apic_max_reps_clear_pending; 1914 waited++) { 1915 if (GET_RDT_BITS(ioapic_ix, intin_no, AV_PENDING) == 0) 1916 break; 1917 } 1918 if (!level) 1919 break; 1920 1921 /* 1922 * Mask the RDT entry for level-triggered interrupts. 1923 */ 1924 irqp->airq_rdt_entry |= AV_MASK; 1925 rdt_entry = READ_IOAPIC_RDT_ENTRY_LOW_DWORD(ioapic_ix, 1926 intin_no); 1927 if ((masked = (rdt_entry & AV_MASK)) == 0) { 1928 /* Mask it */ 1929 WRITE_IOAPIC_RDT_ENTRY_LOW_DWORD(ioapic_ix, intin_no, 1930 AV_MASK | rdt_entry); 1931 } 1932 1933 /* 1934 * If there was a race and an interrupt was injected 1935 * just before we masked, check for that case here. 1936 * Then, unmask the RDT entry and try again. If we're 1937 * on our last try, don't unmask (because we want the 1938 * RDT entry to remain masked for the rest of the 1939 * function). 1940 */ 1941 rdt_entry = READ_IOAPIC_RDT_ENTRY_LOW_DWORD(ioapic_ix, 1942 intin_no); 1943 if ((masked == 0) && ((rdt_entry & AV_PENDING) != 0) && 1944 (repeats < apic_max_reps_clear_pending)) { 1945 /* Unmask it */ 1946 WRITE_IOAPIC_RDT_ENTRY_LOW_DWORD(ioapic_ix, 1947 intin_no, rdt_entry & ~AV_MASK); 1948 irqp->airq_rdt_entry &= ~AV_MASK; 1949 } 1950 } while ((rdt_entry & AV_PENDING) && 1951 (repeats < apic_max_reps_clear_pending)); 1952 1953 #ifdef DEBUG 1954 if (GET_RDT_BITS(ioapic_ix, intin_no, AV_PENDING) != 0) 1955 apix_intr_deliver_timeouts++; 1956 #endif 1957 1958 if (!level || !APIX_IS_MASK_RDT(apix_mul_ioapic_method)) 1959 goto done; 1960 1961 /* 1962 * wait for remote IRR to be cleared for level-triggered 1963 * interrupts 1964 */ 1965 repeats = 0; 1966 do { 1967 repeats++; 1968 1969 for (waited = 0; waited < apic_max_reps_clear_pending; 1970 waited++) { 1971 if (GET_RDT_BITS(ioapic_ix, intin_no, AV_REMOTE_IRR) 1972 == 0) 1973 break; 1974 } 1975 1976 if (GET_RDT_BITS(ioapic_ix, intin_no, AV_REMOTE_IRR) != 0) { 1977 lock_clear(&apic_ioapic_lock); 1978 intr_restore(iflag); 1979 1980 delay(APIX_CHECK_IRR_DELAY); 1981 1982 iflag = intr_clear(); 1983 lock_set(&apic_ioapic_lock); 1984 } 1985 } while (repeats < apix_max_reps_irr_pending); 1986 1987 if (repeats >= apix_max_reps_irr_pending) { 1988 #ifdef DEBUG 1989 apix_intr_rirr_timeouts++; 1990 #endif 1991 1992 /* 1993 * If we waited and the Remote IRR bit is still not cleared, 1994 * AND if we've invoked the timeout APIC_REPROGRAM_MAX_TIMEOUTS 1995 * times for this interrupt, try the last-ditch workaround: 1996 */ 1997 if (GET_RDT_BITS(ioapic_ix, intin_no, AV_REMOTE_IRR) != 0) { 1998 /* 1999 * Trying to clear the bit through normal 2000 * channels has failed. So as a last-ditch 2001 * effort, try to set the trigger mode to 2002 * edge, then to level. This has been 2003 * observed to work on many systems. 2004 */ 2005 WRITE_IOAPIC_RDT_ENTRY_LOW_DWORD(ioapic_ix, 2006 intin_no, 2007 READ_IOAPIC_RDT_ENTRY_LOW_DWORD(ioapic_ix, 2008 intin_no) & ~AV_LEVEL); 2009 WRITE_IOAPIC_RDT_ENTRY_LOW_DWORD(ioapic_ix, 2010 intin_no, 2011 READ_IOAPIC_RDT_ENTRY_LOW_DWORD(ioapic_ix, 2012 intin_no) | AV_LEVEL); 2013 } 2014 2015 if (GET_RDT_BITS(ioapic_ix, intin_no, AV_REMOTE_IRR) != 0) { 2016 #ifdef DEBUG 2017 apix_intr_rirr_reset_failure++; 2018 #endif 2019 lock_clear(&apic_ioapic_lock); 2020 intr_restore(iflag); 2021 prom_printf("apix: Remote IRR still " 2022 "not clear for IOAPIC %d intin %d.\n" 2023 "\tInterrupts to this pin may cease " 2024 "functioning.\n", ioapic_ix, intin_no); 2025 return (1); /* return failure */ 2026 } 2027 } 2028 2029 done: 2030 /* change apic_irq_table */ 2031 lock_clear(&apic_ioapic_lock); 2032 intr_restore(iflag); 2033 apix_intx_set_vector(irqno, cpuid, vector); 2034 iflag = intr_clear(); 2035 lock_set(&apic_ioapic_lock); 2036 2037 /* reprogramme IO-APIC RDT entry */ 2038 apix_intx_enable(irqno); 2039 2040 lock_clear(&apic_ioapic_lock); 2041 intr_restore(iflag); 2042 2043 return (0); 2044 } 2045 2046 static int 2047 apix_intx_get_pending(int irqno) 2048 { 2049 apic_irq_t *irqp; 2050 int intin, ioapicindex, pending; 2051 ulong_t iflag; 2052 2053 mutex_enter(&airq_mutex); 2054 irqp = apic_irq_table[irqno]; 2055 if (IS_IRQ_FREE(irqp)) { 2056 mutex_exit(&airq_mutex); 2057 return (0); 2058 } 2059 2060 /* check IO-APIC delivery status */ 2061 intin = irqp->airq_intin_no; 2062 ioapicindex = irqp->airq_ioapicindex; 2063 mutex_exit(&airq_mutex); 2064 2065 iflag = intr_clear(); 2066 lock_set(&apic_ioapic_lock); 2067 2068 pending = (READ_IOAPIC_RDT_ENTRY_LOW_DWORD(ioapicindex, intin) & 2069 AV_PENDING) ? 1 : 0; 2070 2071 lock_clear(&apic_ioapic_lock); 2072 intr_restore(iflag); 2073 2074 return (pending); 2075 } 2076 2077 static void 2078 apix_intx_set_mask(int irqno) 2079 { 2080 int intin, ioapixindex, rdt_entry; 2081 ulong_t iflag; 2082 apic_irq_t *irqp; 2083 2084 mutex_enter(&airq_mutex); 2085 irqp = apic_irq_table[irqno]; 2086 2087 ASSERT(irqp->airq_mps_intr_index != FREE_INDEX); 2088 2089 intin = irqp->airq_intin_no; 2090 ioapixindex = irqp->airq_ioapicindex; 2091 mutex_exit(&airq_mutex); 2092 2093 iflag = intr_clear(); 2094 lock_set(&apic_ioapic_lock); 2095 2096 rdt_entry = READ_IOAPIC_RDT_ENTRY_LOW_DWORD(ioapixindex, intin); 2097 2098 /* clear mask */ 2099 WRITE_IOAPIC_RDT_ENTRY_LOW_DWORD(ioapixindex, intin, 2100 (AV_MASK | rdt_entry)); 2101 2102 lock_clear(&apic_ioapic_lock); 2103 intr_restore(iflag); 2104 } 2105 2106 static void 2107 apix_intx_clear_mask(int irqno) 2108 { 2109 int intin, ioapixindex, rdt_entry; 2110 ulong_t iflag; 2111 apic_irq_t *irqp; 2112 2113 mutex_enter(&airq_mutex); 2114 irqp = apic_irq_table[irqno]; 2115 2116 ASSERT(irqp->airq_mps_intr_index != FREE_INDEX); 2117 2118 intin = irqp->airq_intin_no; 2119 ioapixindex = irqp->airq_ioapicindex; 2120 mutex_exit(&airq_mutex); 2121 2122 iflag = intr_clear(); 2123 lock_set(&apic_ioapic_lock); 2124 2125 rdt_entry = READ_IOAPIC_RDT_ENTRY_LOW_DWORD(ioapixindex, intin); 2126 2127 /* clear mask */ 2128 WRITE_IOAPIC_RDT_ENTRY_LOW_DWORD(ioapixindex, intin, 2129 ((~AV_MASK) & rdt_entry)); 2130 2131 lock_clear(&apic_ioapic_lock); 2132 intr_restore(iflag); 2133 } 2134 2135 /* 2136 * For level-triggered interrupt, mask the IRQ line. Mask means 2137 * new interrupts will not be delivered. The interrupt already 2138 * accepted by a local APIC is not affected 2139 */ 2140 void 2141 apix_level_intr_pre_eoi(int irq) 2142 { 2143 apic_irq_t *irqp = apic_irq_table[irq]; 2144 int apic_ix, intin_ix; 2145 2146 if (irqp == NULL) 2147 return; 2148 2149 ASSERT(apic_level_intr[irq] == TRIGGER_MODE_LEVEL); 2150 2151 lock_set(&apic_ioapic_lock); 2152 2153 intin_ix = irqp->airq_intin_no; 2154 apic_ix = irqp->airq_ioapicindex; 2155 2156 if (irqp->airq_cpu != CPU->cpu_id) { 2157 if (!APIX_IS_MASK_RDT(apix_mul_ioapic_method)) 2158 ioapic_write_eoi(apic_ix, irqp->airq_vector); 2159 lock_clear(&apic_ioapic_lock); 2160 return; 2161 } 2162 2163 if (apix_mul_ioapic_method == APIC_MUL_IOAPIC_IOXAPIC) { 2164 /* 2165 * This is a IOxAPIC and there is EOI register: 2166 * Change the vector to reserved unused vector, so that 2167 * the EOI from Local APIC won't clear the Remote IRR for 2168 * this level trigger interrupt. Instead, we'll manually 2169 * clear it in apix_post_hardint() after ISR handling. 2170 */ 2171 WRITE_IOAPIC_RDT_ENTRY_LOW_DWORD(apic_ix, intin_ix, 2172 (irqp->airq_rdt_entry & (~0xff)) | APIX_RESV_VECTOR); 2173 } else { 2174 WRITE_IOAPIC_RDT_ENTRY_LOW_DWORD(apic_ix, intin_ix, 2175 AV_MASK | irqp->airq_rdt_entry); 2176 } 2177 2178 lock_clear(&apic_ioapic_lock); 2179 } 2180 2181 /* 2182 * For level-triggered interrupt, unmask the IRQ line 2183 * or restore the original vector number. 2184 */ 2185 void 2186 apix_level_intr_post_dispatch(int irq) 2187 { 2188 apic_irq_t *irqp = apic_irq_table[irq]; 2189 int apic_ix, intin_ix; 2190 2191 if (irqp == NULL) 2192 return; 2193 2194 lock_set(&apic_ioapic_lock); 2195 2196 intin_ix = irqp->airq_intin_no; 2197 apic_ix = irqp->airq_ioapicindex; 2198 2199 if (APIX_IS_DIRECTED_EOI(apix_mul_ioapic_method)) { 2200 /* 2201 * Already sent EOI back to Local APIC. 2202 * Send EOI to IO-APIC 2203 */ 2204 ioapic_write_eoi(apic_ix, irqp->airq_vector); 2205 } else { 2206 /* clear the mask or restore the vector */ 2207 WRITE_IOAPIC_RDT_ENTRY_LOW_DWORD(apic_ix, intin_ix, 2208 irqp->airq_rdt_entry); 2209 2210 /* send EOI to IOxAPIC */ 2211 if (apix_mul_ioapic_method == APIC_MUL_IOAPIC_IOXAPIC) 2212 ioapic_write_eoi(apic_ix, irqp->airq_vector); 2213 } 2214 2215 lock_clear(&apic_ioapic_lock); 2216 } 2217 2218 static int 2219 apix_intx_get_shared(int irqno) 2220 { 2221 apic_irq_t *irqp; 2222 int share; 2223 2224 mutex_enter(&airq_mutex); 2225 irqp = apic_irq_table[irqno]; 2226 if (IS_IRQ_FREE(irqp) || (irqp->airq_cpu == IRQ_UNINIT)) { 2227 mutex_exit(&airq_mutex); 2228 return (0); 2229 } 2230 share = irqp->airq_share; 2231 mutex_exit(&airq_mutex); 2232 2233 return (share); 2234 } 2235 2236 static void 2237 apix_intx_set_shared(int irqno, int delta) 2238 { 2239 apic_irq_t *irqp; 2240 2241 mutex_enter(&airq_mutex); 2242 irqp = apic_irq_table[irqno]; 2243 if (IS_IRQ_FREE(irqp)) { 2244 mutex_exit(&airq_mutex); 2245 return; 2246 } 2247 irqp->airq_share += delta; 2248 mutex_exit(&airq_mutex); 2249 } 2250 2251 /* 2252 * Setup IRQ table. Return IRQ no or -1 on failure 2253 */ 2254 static int 2255 apix_intx_setup(dev_info_t *dip, int inum, int irqno, 2256 struct apic_io_intr *intrp, struct intrspec *ispec, iflag_t *iflagp) 2257 { 2258 int origirq = ispec->intrspec_vec; 2259 int newirq; 2260 short intr_index; 2261 uchar_t ipin, ioapic, ioapicindex; 2262 apic_irq_t *irqp; 2263 2264 UNREFERENCED_1PARAMETER(inum); 2265 2266 if (intrp != NULL) { 2267 intr_index = (short)(intrp - apic_io_intrp); 2268 ioapic = intrp->intr_destid; 2269 ipin = intrp->intr_destintin; 2270 2271 /* Find ioapicindex. If destid was ALL, we will exit with 0. */ 2272 for (ioapicindex = apic_io_max - 1; ioapicindex; ioapicindex--) 2273 if (apic_io_id[ioapicindex] == ioapic) 2274 break; 2275 ASSERT((ioapic == apic_io_id[ioapicindex]) || 2276 (ioapic == INTR_ALL_APIC)); 2277 2278 /* check whether this intin# has been used by another irqno */ 2279 if ((newirq = apic_find_intin(ioapicindex, ipin)) != -1) 2280 return (newirq); 2281 2282 } else if (iflagp != NULL) { /* ACPI */ 2283 intr_index = ACPI_INDEX; 2284 ioapicindex = acpi_find_ioapic(irqno); 2285 ASSERT(ioapicindex != 0xFF); 2286 ioapic = apic_io_id[ioapicindex]; 2287 ipin = irqno - apic_io_vectbase[ioapicindex]; 2288 2289 if (apic_irq_table[irqno] && 2290 apic_irq_table[irqno]->airq_mps_intr_index == ACPI_INDEX) { 2291 ASSERT(apic_irq_table[irqno]->airq_intin_no == ipin && 2292 apic_irq_table[irqno]->airq_ioapicindex == 2293 ioapicindex); 2294 return (irqno); 2295 } 2296 2297 } else { /* default configuration */ 2298 intr_index = DEFAULT_INDEX; 2299 ioapicindex = 0; 2300 ioapic = apic_io_id[ioapicindex]; 2301 ipin = (uchar_t)irqno; 2302 } 2303 2304 /* allocate a new IRQ no */ 2305 if ((irqp = apic_irq_table[irqno]) == NULL) { 2306 irqp = kmem_zalloc(sizeof (apic_irq_t), KM_SLEEP); 2307 apic_irq_table[irqno] = irqp; 2308 } else { 2309 if (irqp->airq_mps_intr_index != FREE_INDEX) { 2310 newirq = apic_allocate_irq(apic_first_avail_irq); 2311 if (newirq == -1) { 2312 return (-1); 2313 } 2314 irqno = newirq; 2315 irqp = apic_irq_table[irqno]; 2316 ASSERT(irqp != NULL); 2317 } 2318 } 2319 apic_max_device_irq = max(irqno, apic_max_device_irq); 2320 apic_min_device_irq = min(irqno, apic_min_device_irq); 2321 2322 irqp->airq_mps_intr_index = intr_index; 2323 irqp->airq_ioapicindex = ioapicindex; 2324 irqp->airq_intin_no = ipin; 2325 irqp->airq_dip = dip; 2326 irqp->airq_origirq = (uchar_t)origirq; 2327 if (iflagp != NULL) 2328 irqp->airq_iflag = *iflagp; 2329 irqp->airq_cpu = IRQ_UNINIT; 2330 irqp->airq_vector = 0; 2331 2332 return (irqno); 2333 } 2334 2335 /* 2336 * Setup IRQ table for non-pci devices. Return IRQ no or -1 on error 2337 */ 2338 static int 2339 apix_intx_setup_nonpci(dev_info_t *dip, int inum, int bustype, 2340 struct intrspec *ispec) 2341 { 2342 int irqno = ispec->intrspec_vec; 2343 int newirq, i; 2344 iflag_t intr_flag; 2345 ACPI_SUBTABLE_HEADER *hp; 2346 ACPI_MADT_INTERRUPT_OVERRIDE *isop; 2347 struct apic_io_intr *intrp; 2348 2349 if (!apic_enable_acpi || apic_use_acpi_madt_only) { 2350 int busid; 2351 2352 if (bustype == 0) 2353 bustype = eisa_level_intr_mask ? BUS_EISA : BUS_ISA; 2354 2355 /* loop checking BUS_ISA/BUS_EISA */ 2356 for (i = 0; i < 2; i++) { 2357 if (((busid = apic_find_bus_id(bustype)) != -1) && 2358 ((intrp = apic_find_io_intr_w_busid(irqno, busid)) 2359 != NULL)) { 2360 return (apix_intx_setup(dip, inum, irqno, 2361 intrp, ispec, NULL)); 2362 } 2363 bustype = (bustype == BUS_EISA) ? BUS_ISA : BUS_EISA; 2364 } 2365 2366 /* fall back to default configuration */ 2367 return (-1); 2368 } 2369 2370 /* search iso entries first */ 2371 if (acpi_iso_cnt != 0) { 2372 hp = (ACPI_SUBTABLE_HEADER *)acpi_isop; 2373 i = 0; 2374 while (i < acpi_iso_cnt) { 2375 if (hp->Type == ACPI_MADT_TYPE_INTERRUPT_OVERRIDE) { 2376 isop = (ACPI_MADT_INTERRUPT_OVERRIDE *) hp; 2377 if (isop->Bus == 0 && 2378 isop->SourceIrq == irqno) { 2379 newirq = isop->GlobalIrq; 2380 intr_flag.intr_po = isop->IntiFlags & 2381 ACPI_MADT_POLARITY_MASK; 2382 intr_flag.intr_el = (isop->IntiFlags & 2383 ACPI_MADT_TRIGGER_MASK) >> 2; 2384 intr_flag.bustype = BUS_ISA; 2385 2386 return (apix_intx_setup(dip, inum, 2387 newirq, NULL, ispec, &intr_flag)); 2388 } 2389 i++; 2390 } 2391 hp = (ACPI_SUBTABLE_HEADER *)(((char *)hp) + 2392 hp->Length); 2393 } 2394 } 2395 intr_flag.intr_po = INTR_PO_ACTIVE_HIGH; 2396 intr_flag.intr_el = INTR_EL_EDGE; 2397 intr_flag.bustype = BUS_ISA; 2398 return (apix_intx_setup(dip, inum, irqno, NULL, ispec, &intr_flag)); 2399 } 2400 2401 2402 /* 2403 * Setup IRQ table for pci devices. Return IRQ no or -1 on error 2404 */ 2405 static int 2406 apix_intx_setup_pci(dev_info_t *dip, int inum, int bustype, 2407 struct intrspec *ispec) 2408 { 2409 int busid, devid, pci_irq; 2410 ddi_acc_handle_t cfg_handle; 2411 uchar_t ipin; 2412 iflag_t intr_flag; 2413 struct apic_io_intr *intrp; 2414 2415 if (acpica_get_bdf(dip, &busid, &devid, NULL) != 0) 2416 return (-1); 2417 2418 if (busid == 0 && apic_pci_bus_total == 1) 2419 busid = (int)apic_single_pci_busid; 2420 2421 if (pci_config_setup(dip, &cfg_handle) != DDI_SUCCESS) 2422 return (-1); 2423 ipin = pci_config_get8(cfg_handle, PCI_CONF_IPIN) - PCI_INTA; 2424 pci_config_teardown(&cfg_handle); 2425 2426 if (apic_enable_acpi && !apic_use_acpi_madt_only) { /* ACPI */ 2427 if (apic_acpi_translate_pci_irq(dip, busid, devid, 2428 ipin, &pci_irq, &intr_flag) != ACPI_PSM_SUCCESS) 2429 return (-1); 2430 2431 intr_flag.bustype = (uchar_t)bustype; 2432 return (apix_intx_setup(dip, inum, pci_irq, NULL, ispec, 2433 &intr_flag)); 2434 } 2435 2436 /* MP configuration table */ 2437 pci_irq = ((devid & 0x1f) << 2) | (ipin & 0x3); 2438 if ((intrp = apic_find_io_intr_w_busid(pci_irq, busid)) == NULL) { 2439 pci_irq = apic_handle_pci_pci_bridge(dip, devid, ipin, &intrp); 2440 if (pci_irq == -1) 2441 return (-1); 2442 } 2443 2444 return (apix_intx_setup(dip, inum, pci_irq, intrp, ispec, NULL)); 2445 } 2446 2447 /* 2448 * Translate and return IRQ no 2449 */ 2450 static int 2451 apix_intx_xlate_irq(dev_info_t *dip, int inum, struct intrspec *ispec) 2452 { 2453 int newirq, irqno = ispec->intrspec_vec; 2454 int parent_is_pci_or_pciex = 0, child_is_pciex = 0; 2455 int bustype = 0, dev_len; 2456 char dev_type[16]; 2457 2458 if (apic_defconf) { 2459 mutex_enter(&airq_mutex); 2460 goto defconf; 2461 } 2462 2463 if ((dip == NULL) || (!apic_irq_translate && !apic_enable_acpi)) { 2464 mutex_enter(&airq_mutex); 2465 goto nonpci; 2466 } 2467 2468 /* 2469 * use ddi_getlongprop_buf() instead of ddi_prop_lookup_string() 2470 * to avoid extra buffer allocation. 2471 */ 2472 dev_len = sizeof (dev_type); 2473 if (ddi_getlongprop_buf(DDI_DEV_T_ANY, ddi_get_parent(dip), 2474 DDI_PROP_DONTPASS, "device_type", (caddr_t)dev_type, 2475 &dev_len) == DDI_PROP_SUCCESS) { 2476 if ((strcmp(dev_type, "pci") == 0) || 2477 (strcmp(dev_type, "pciex") == 0)) 2478 parent_is_pci_or_pciex = 1; 2479 } 2480 2481 if (ddi_getlongprop_buf(DDI_DEV_T_ANY, dip, 2482 DDI_PROP_DONTPASS, "compatible", (caddr_t)dev_type, 2483 &dev_len) == DDI_PROP_SUCCESS) { 2484 if (strstr(dev_type, "pciex")) 2485 child_is_pciex = 1; 2486 } 2487 2488 mutex_enter(&airq_mutex); 2489 2490 if (parent_is_pci_or_pciex) { 2491 bustype = child_is_pciex ? BUS_PCIE : BUS_PCI; 2492 newirq = apix_intx_setup_pci(dip, inum, bustype, ispec); 2493 if (newirq != -1) 2494 goto done; 2495 bustype = 0; 2496 } else if (strcmp(dev_type, "isa") == 0) 2497 bustype = BUS_ISA; 2498 else if (strcmp(dev_type, "eisa") == 0) 2499 bustype = BUS_EISA; 2500 2501 nonpci: 2502 newirq = apix_intx_setup_nonpci(dip, inum, bustype, ispec); 2503 if (newirq != -1) 2504 goto done; 2505 2506 defconf: 2507 newirq = apix_intx_setup(dip, inum, irqno, NULL, ispec, NULL); 2508 if (newirq == -1) { 2509 mutex_exit(&airq_mutex); 2510 return (-1); 2511 } 2512 done: 2513 ASSERT(apic_irq_table[newirq]); 2514 mutex_exit(&airq_mutex); 2515 return (newirq); 2516 } 2517 2518 static int 2519 apix_intx_alloc_vector(dev_info_t *dip, int inum, struct intrspec *ispec) 2520 { 2521 int irqno; 2522 apix_vector_t *vecp; 2523 2524 if ((irqno = apix_intx_xlate_irq(dip, inum, ispec)) == -1) 2525 return (0); 2526 2527 if ((vecp = apix_alloc_intx(dip, inum, irqno)) == NULL) 2528 return (0); 2529 2530 DDI_INTR_IMPLDBG((CE_CONT, "apix_intx_alloc_vector: dip=0x%p name=%s " 2531 "irqno=0x%x cpuid=%d vector=0x%x\n", 2532 (void *)dip, ddi_driver_name(dip), irqno, 2533 vecp->v_cpuid, vecp->v_vector)); 2534 2535 return (1); 2536 } 2537 2538 /* 2539 * Return the vector number if the translated IRQ for this device 2540 * has a vector mapping setup. If no IRQ setup exists or no vector is 2541 * allocated to it then return 0. 2542 */ 2543 static apix_vector_t * 2544 apix_intx_xlate_vector(dev_info_t *dip, int inum, struct intrspec *ispec) 2545 { 2546 int irqno; 2547 apix_vector_t *vecp; 2548 2549 /* get the IRQ number */ 2550 if ((irqno = apix_intx_xlate_irq(dip, inum, ispec)) == -1) 2551 return (NULL); 2552 2553 /* get the vector number if a vector is allocated to this irqno */ 2554 vecp = apix_intx_get_vector(irqno); 2555 2556 return (vecp); 2557 } 2558 2559 /* stub function */ 2560 int 2561 apix_loaded(void) 2562 { 2563 return (apix_is_enabled); 2564 } 2565