gic.c revision 1.7
1/* $NetBSD: gic.c,v 1.7 2014/03/28 21:39:09 matt Exp $ */ 2/*- 3 * Copyright (c) 2012 The NetBSD Foundation, Inc. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to The NetBSD Foundation 7 * by Matt Thomas of 3am Software Foundry. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 19 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 22 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31#include "opt_ddb.h" 32 33#define _INTR_PRIVATE 34 35#include <sys/cdefs.h> 36__KERNEL_RCSID(0, "$NetBSD: gic.c,v 1.7 2014/03/28 21:39:09 matt Exp $"); 37 38#include <sys/param.h> 39#include <sys/bus.h> 40#include <sys/device.h> 41#include <sys/evcnt.h> 42#include <sys/intr.h> 43#include <sys/cpu.h> 44#include <sys/proc.h> 45#include <sys/xcall.h> /* for xc_ipi_handler */ 46 47#include <arm/armreg.h> 48#include <arm/cpufunc.h> 49#include <arm/atomic.h> 50 51#include <arm/cortex/gic_reg.h> 52#include <arm/cortex/mpcore_var.h> 53 54#define ARMGIC_SGI_IPIBASE (16 - NIPI) 55 56static int armgic_match(device_t, cfdata_t, void *); 57static void armgic_attach(device_t, device_t, void *); 58 59static void armgic_set_priority(struct pic_softc *, int); 60static void armgic_unblock_irqs(struct pic_softc *, size_t, uint32_t); 61static void armgic_block_irqs(struct pic_softc *, size_t, uint32_t); 62static void armgic_establish_irq(struct pic_softc *, struct intrsource *); 63#if 0 64static void armgic_source_name(struct pic_softc *, int, char *, size_t); 65#endif 66 67#ifdef MULTIPROCESSOR 68static void armgic_cpu_init(struct pic_softc *, struct cpu_info *); 69static void armgic_ipi_send(struct pic_softc *, const kcpuset_t *, u_long); 70#endif 71 72static const struct pic_ops armgic_picops = { 73 .pic_unblock_irqs = armgic_unblock_irqs, 74 .pic_block_irqs = armgic_block_irqs, 75 .pic_establish_irq = armgic_establish_irq, 76#if 0 77 .pic_source_name = armgic_source_name, 78#endif 79 .pic_set_priority = armgic_set_priority, 80#ifdef MULTIPROCESSOR 81 .pic_cpu_init = armgic_cpu_init, 82 .pic_ipi_send = armgic_ipi_send, 83#endif 84}; 85 86#define PICTOSOFTC(pic) ((struct armgic_softc *)(pic)) 87 88static struct armgic_softc { 89 struct pic_softc sc_pic; 90 device_t sc_dev; 91 bus_space_tag_t sc_memt; 92 bus_space_handle_t sc_gicch; 93 bus_space_handle_t sc_gicdh; 94 size_t sc_gic_lines; 95 uint32_t sc_gic_type; 96 uint32_t sc_gic_valid_lines[1024/32]; 97 uint32_t sc_enabled_local; 98#ifdef MULTIPROCESSOR 99 uint32_t sc_mptargets; 100#endif 101} armgic_softc = { 102 .sc_pic = { 103 .pic_ops = &armgic_picops, 104 .pic_name = "armgic", 105 }, 106}; 107 108static struct intrsource armgic_dummy_source; 109 110__CTASSERT(NIPL == 8); 111 112/* 113 * GIC register are always in little-endian. It is assumed the bus_space 114 * will do any endian conversion required. 115 */ 116static inline uint32_t 117gicc_read(struct armgic_softc *sc, bus_size_t o) 118{ 119 return bus_space_read_4(sc->sc_memt, sc->sc_gicch, o); 120} 121 122static inline void 123gicc_write(struct armgic_softc *sc, bus_size_t o, uint32_t v) 124{ 125 bus_space_write_4(sc->sc_memt, sc->sc_gicch, o, v); 126} 127 128static inline uint32_t 129gicd_read(struct armgic_softc *sc, bus_size_t o) 130{ 131 return bus_space_read_4(sc->sc_memt, sc->sc_gicdh, o); 132} 133 134static inline void 135gicd_write(struct armgic_softc *sc, bus_size_t o, uint32_t v) 136{ 137 bus_space_write_4(sc->sc_memt, sc->sc_gicdh, o, v); 138} 139 140/* 141 * In the GIC prioritization scheme, lower numbers have higher priority. 142 */ 143static inline uint32_t 144armgic_ipl_to_priority(int ipl) 145{ 146 return (IPL_HIGH - ipl) * GICC_PMR_PRIORITIES / NIPL; 147} 148 149#if 0 150static inline int 151armgic_priority_to_ipl(uint32_t priority) 152{ 153 return IPL_HIGH - priority * NIPL / GICC_PMR_PRIORITIES; 154} 155#endif 156 157static void 158armgic_unblock_irqs(struct pic_softc *pic, size_t irq_base, uint32_t irq_mask) 159{ 160 struct armgic_softc * const sc = PICTOSOFTC(pic); 161 const size_t group = irq_base / 32; 162 163 if (group == 0) 164 sc->sc_enabled_local |= irq_mask; 165 166 gicd_write(sc, GICD_ISENABLERn(group), irq_mask); 167} 168 169static void 170armgic_block_irqs(struct pic_softc *pic, size_t irq_base, uint32_t irq_mask) 171{ 172 struct armgic_softc * const sc = PICTOSOFTC(pic); 173 const size_t group = irq_base / 32; 174 175 if (group == 0) 176 sc->sc_enabled_local &= ~irq_mask; 177 178 gicd_write(sc, GICD_ICENABLERn(group), irq_mask); 179} 180 181static uint32_t armgic_last_priority; 182 183static void 184armgic_set_priority(struct pic_softc *pic, int ipl) 185{ 186 struct armgic_softc * const sc = PICTOSOFTC(pic); 187 188 const uint32_t priority = armgic_ipl_to_priority(ipl); 189 gicc_write(sc, GICC_PMR, priority); 190 armgic_last_priority = priority; 191} 192 193#ifdef __HAVE_PIC_FAST_SOFTINTS 194void 195softint_init_md(lwp_t *l, u_int level, uintptr_t *machdep_p) 196{ 197 lwp_t **lp = &l->l_cpu->ci_softlwps[level]; 198 KASSERT(*lp == NULL || *lp == l); 199 *lp = l; 200 /* 201 * Really easy. Just tell it to trigger the local CPU. 202 */ 203 *machdep_p = GICD_SGIR_TargetListFilter_Me 204 | __SHIFTIN(level, GICD_SGIR_SGIINTID); 205} 206 207void 208softint_trigger(uintptr_t machdep) 209{ 210 211 gicd_write(&armgic_softc, GICD_SGIR, machdep); 212} 213#endif 214 215void 216armgic_irq_handler(void *tf) 217{ 218 struct cpu_info * const ci = curcpu(); 219 struct armgic_softc * const sc = &armgic_softc; 220 const int old_ipl = ci->ci_cpl; 221#ifdef DIAGNOSTIC 222 const int old_mtx_count = ci->ci_mtx_count; 223 const int old_l_biglocks = ci->ci_curlwp->l_biglocks; 224#endif 225#ifdef DEBUG 226 size_t n = 0; 227#endif 228 229 ci->ci_data.cpu_nintr++; 230 231 KASSERTMSG(old_ipl != IPL_HIGH, "old_ipl %d pmr %#x hppir %#x", 232 old_ipl, gicc_read(sc, GICC_PMR), gicc_read(sc, GICC_HPPIR)); 233#if 0 234 printf("%s(enter): %s: pmr=%u hppir=%u\n", 235 __func__, ci->ci_data.cpu_name, 236 gicc_read(sc, GICC_PMR), 237 gicc_read(sc, GICC_HPPIR)); 238#elif 0 239 printf("(%u:%d", ci->ci_index, old_ipl); 240#endif 241 242 for (;;) { 243 uint32_t iar = gicc_read(sc, GICC_IAR); 244 uint32_t irq = __SHIFTOUT(iar, GICC_IAR_IRQ); 245 //printf(".%u", irq); 246 if (irq == GICC_IAR_IRQ_SPURIOUS) { 247 iar = gicc_read(sc, GICC_IAR); 248 irq = __SHIFTOUT(iar, GICC_IAR_IRQ); 249 if (irq == GICC_IAR_IRQ_SPURIOUS) 250 break; 251 //printf(".%u", irq); 252 } 253 254 //const uint32_t cpuid = __SHIFTOUT(iar, GICC_IAR_CPUID_MASK); 255 struct intrsource * const is = sc->sc_pic.pic_sources[irq]; 256 KASSERT(is != &armgic_dummy_source); 257 258 /* 259 * GIC has asserted IPL for us so we can just update ci_cpl. 260 * 261 * But it's not that simple. We may have already bumped ci_cpl 262 * due to a high priority interrupt and now we are about to 263 * dispatch one lower than the previous. It's possible for 264 * that previous interrupt to have deferred some interrupts 265 * so we need deal with those when lowering to the current 266 * interrupt's ipl. 267 * 268 * However, if are just raising ipl, we can just update ci_cpl. 269 */ 270#if 0 271 const int ipl = armgic_priority_to_ipl(gicc_read(sc, GICC_RPR)); 272 KASSERTMSG(panicstr != NULL || ipl == is->is_ipl, 273 "%s: irq %d: running ipl %d != source ipl %u", 274 ci->ci_data.cpu_name, irq, ipl, is->is_ipl); 275#else 276 const int ipl = is->is_ipl; 277#endif 278 if (__predict_false(ipl < ci->ci_cpl)) { 279 //printf("<"); 280 pic_do_pending_ints(I32_bit, ipl, tf); 281 KASSERT(ci->ci_cpl == ipl); 282 } else { 283 KASSERTMSG(ipl > ci->ci_cpl, "ipl %d cpl %d hw-ipl %#x", 284 ipl, ci->ci_cpl, 285 gicc_read(sc, GICC_PMR)); 286 //printf(">"); 287 gicc_write(sc, GICC_PMR, armgic_ipl_to_priority(ipl)); 288 ci->ci_cpl = ipl; 289 } 290 //printf("$"); 291 cpsie(I32_bit); 292 pic_dispatch(is, tf); 293 cpsid(I32_bit); 294 gicc_write(sc, GICC_EOIR, iar); 295#ifdef DEBUG 296 n++; 297 KDASSERTMSG(n < 5, "%s: processed too many (%zu)", 298 ci->ci_data.cpu_name, n); 299#endif 300 } 301 302 // printf("%s(%p): exit (%zu dispatched)\n", __func__, tf, n); 303 /* 304 * Now handle any pending ints. 305 */ 306 //printf("!"); 307 KASSERT(old_ipl != IPL_HIGH); 308 pic_do_pending_ints(I32_bit, old_ipl, tf); 309 KASSERTMSG(ci->ci_cpl == old_ipl, "ci_cpl %d old_ipl %d", ci->ci_cpl, old_ipl); 310 KASSERT(old_mtx_count == ci->ci_mtx_count); 311 KASSERT(old_l_biglocks == ci->ci_curlwp->l_biglocks); 312#if 0 313 printf("%s(exit): %s(%d): pmr=%u hppir=%u\n", 314 __func__, ci->ci_data.cpu_name, ci->ci_cpl, 315 gicc_read(sc, GICC_PMR), 316 gicc_read(sc, GICC_HPPIR)); 317#elif 0 318 printf("->%#x)", ((struct trapframe *)tf)->tf_pc); 319#endif 320} 321 322void 323armgic_establish_irq(struct pic_softc *pic, struct intrsource *is) 324{ 325 struct armgic_softc * const sc = PICTOSOFTC(pic); 326 const size_t group = is->is_irq / 32; 327 const u_int irq = is->is_irq & 31; 328 const u_int byte_shift = 8 * (irq & 3); 329 const u_int twopair_shift = 2 * (irq & 15); 330 331 KASSERTMSG(sc->sc_gic_valid_lines[group] & __BIT(irq), 332 "irq %u: not valid (group[%zu]=0x%08x [0x%08x])", 333 is->is_irq, group, sc->sc_gic_valid_lines[group], 334 (uint32_t)__BIT(irq)); 335 336 KASSERTMSG(is->is_type == IST_LEVEL || is->is_type == IST_EDGE, 337 "irq %u: type %u unsupported", is->is_irq, is->is_type); 338 339 const bus_size_t targets_reg = GICD_ITARGETSRn(is->is_irq / 4); 340 const bus_size_t cfg_reg = GICD_ICFGRn(is->is_irq / 16); 341 uint32_t targets = gicd_read(sc, targets_reg); 342 uint32_t cfg = gicd_read(sc, cfg_reg); 343 344 if (group > 0) { 345 /* 346 * There are 4 irqs per TARGETS register. For now bind 347 * to the primary cpu. 348 */ 349 targets &= ~(0xff << byte_shift); 350#ifdef MULTIPROCESSOR 351 if (is->is_mpsafe) { 352 targets |= sc->sc_mptargets; 353 } else 354#endif 355 targets |= 1 << byte_shift; 356 gicd_write(sc, targets_reg, targets); 357 358 /* 359 * There are 16 irqs per CFG register. 10=EDGE 00=LEVEL 360 */ 361 uint32_t new_cfg = cfg; 362 uint32_t old_cfg = (cfg >> twopair_shift) & 3; 363 if (is->is_type == IST_LEVEL && (old_cfg & 2) != 0) { 364 new_cfg &= ~(3 << twopair_shift); 365 } else if (is->is_type == IST_EDGE && (old_cfg & 2) == 0) { 366 new_cfg |= 2 << twopair_shift; 367 } 368 if (new_cfg != cfg) { 369 gicd_write(sc, cfg_reg, cfg); 370#if 0 371 printf("%s: irq %u: cfg changed from %#x to %#x\n", 372 pic->pic_name, is->is_irq, cfg, new_cfg); 373#endif 374 } 375#ifdef MULTIPROCESSOR 376 } else { 377 /* 378 * All group 0 interrupts are per processor and MPSAFE by 379 * default. 380 */ 381 is->is_mpsafe = true; 382#endif 383 } 384 385 /* 386 * There are 4 irqs per PRIORITY register. Map the IPL 387 * to GIC priority. 388 */ 389 const bus_size_t priority_reg = GICD_IPRIORITYRn(is->is_irq / 4); 390 uint32_t priority = gicd_read(sc, priority_reg); 391 priority &= ~(0xff << byte_shift); 392 priority |= armgic_ipl_to_priority(is->is_ipl) << byte_shift; 393 gicd_write(sc, priority_reg, priority); 394 395#if 0 396 printf("%s: irq %u: target %#x cfg %u priority %#x (%u)\n", 397 pic->pic_name, is->is_irq, (targets >> byte_shift) & 0xff, 398 (cfg >> twopair_shift) & 3, (priority >> byte_shift) & 0xff, 399 is->is_ipl); 400#endif 401} 402 403#ifdef MULTIPROCESSOR 404static void 405armgic_cpu_init_priorities(struct armgic_softc *sc) 406{ 407 uint32_t enabled = sc->sc_enabled_local; 408 for (size_t i = 0; i < 32; i += 4, enabled >>= 4) { 409 /* 410 * If there are no enabled interrupts for the priority register, 411 * don't bother changing it. 412 */ 413 if ((enabled & 0x0f) == 0) 414 continue; 415 /* 416 * Since priorities are in 3210 order, it' 417 */ 418 const bus_size_t priority_reg = GICD_IPRIORITYRn(i / 4); 419 uint32_t priority = gicd_read(sc, priority_reg); 420 uint32_t byte_mask = 0xff; 421 size_t byte_shift = 0; 422 for (size_t j = 0; j < 4; j++, byte_mask <<= 8, byte_shift += 8) { 423 struct intrsource * const is = sc->sc_pic.pic_sources[i+j]; 424 if (is == NULL || is == &armgic_dummy_source) 425 continue; 426 priority &= ~byte_mask; 427 priority |= armgic_ipl_to_priority(is->is_ipl) << byte_shift; 428 } 429 gicd_write(sc, priority_reg, priority); 430 } 431} 432 433static void 434armgic_cpu_init_targets(struct armgic_softc *sc) 435{ 436 /* 437 * Update the mpsafe targets 438 */ 439 for (size_t irq = 32; irq < sc->sc_gic_lines; irq++) { 440 struct intrsource * const is = sc->sc_pic.pic_sources[irq]; 441 const bus_size_t targets_reg = GICD_ITARGETSRn(irq / 4); 442 if (is != NULL && is->is_mpsafe) { 443 const u_int byte_shift = 0xff << (8 * (irq & 3)); 444 uint32_t targets = gicd_read(sc, targets_reg); 445 targets |= sc->sc_mptargets << byte_shift; 446 gicd_write(sc, targets_reg, targets); 447 } 448 } 449} 450 451void 452armgic_cpu_init(struct pic_softc *pic, struct cpu_info *ci) 453{ 454 struct armgic_softc * const sc = PICTOSOFTC(pic); 455 sc->sc_mptargets |= 1 << cpu_index(ci); 456 KASSERTMSG(ci->ci_cpl == IPL_HIGH, "ipl %d not IPL_HIGH", ci->ci_cpl); 457 if (!CPU_IS_PRIMARY(ci)) { 458 if (sc->sc_mptargets != 1) { 459 armgic_cpu_init_targets(sc); 460 } 461 if (sc->sc_enabled_local) { 462 armgic_cpu_init_priorities(sc); 463 gicd_write(sc, GICD_ISENABLERn(0), 464 sc->sc_enabled_local); 465 } 466 } 467 gicc_write(sc, GICC_PMR, armgic_ipl_to_priority(ci->ci_cpl)); // set PMR 468 gicc_write(sc, GICC_CTRL, GICC_CTRL_V1_Enable); // enable interrupt 469 cpsie(I32_bit); // allow IRQ exceptions 470} 471 472void 473armgic_ipi_send(struct pic_softc *pic, const kcpuset_t *kcp, u_long ipi) 474{ 475 struct armgic_softc * const sc = PICTOSOFTC(pic); 476 477#if 0 478 if (ipi == IPI_NOP) { 479 __asm __volatile("sev"); 480 return; 481 } 482#endif 483 484 uint32_t sgir = __SHIFTIN(ARMGIC_SGI_IPIBASE + ipi, GICD_SGIR_SGIINTID); 485 if (kcp != NULL) { 486 uint32_t targets; 487 kcpuset_export_u32(kcp, &targets, sizeof(targets)); 488 sgir |= __SHIFTIN(targets, GICD_SGIR_TargetList); 489 sgir |= GICD_SGIR_TargetListFilter_List; 490 } else { 491 if (ncpu == 1) 492 return; 493 sgir |= GICD_SGIR_TargetListFilter_NotMe; 494 } 495 496 //printf("%s: %s: %#x", __func__, curcpu()->ci_data.cpu_name, sgir); 497 gicd_write(sc, GICD_SGIR, sgir); 498 //printf("\n"); 499} 500#endif 501 502int 503armgic_match(device_t parent, cfdata_t cf, void *aux) 504{ 505 struct mpcore_attach_args * const mpcaa = aux; 506 507 if (strcmp(cf->cf_name, mpcaa->mpcaa_name) != 0) 508 return 0; 509 if (!CPU_ID_CORTEX_P(cputype) || CPU_ID_CORTEX_A8_P(cputype)) 510 return 0; 511 512 return 1; 513} 514 515void 516armgic_attach(device_t parent, device_t self, void *aux) 517{ 518 struct armgic_softc * const sc = &armgic_softc; 519 struct mpcore_attach_args * const mpcaa = aux; 520 521 sc->sc_dev = self; 522 self->dv_private = sc; 523 524 sc->sc_memt = mpcaa->mpcaa_memt; /* provided for us */ 525 bus_space_subregion(sc->sc_memt, mpcaa->mpcaa_memh, mpcaa->mpcaa_off1, 526 4096, &sc->sc_gicdh); 527 bus_space_subregion(sc->sc_memt, mpcaa->mpcaa_memh, mpcaa->mpcaa_off2, 528 4096, &sc->sc_gicch); 529 530 sc->sc_gic_type = gicd_read(sc, GICD_TYPER); 531 sc->sc_pic.pic_maxsources = GICD_TYPER_LINES(sc->sc_gic_type); 532 533 gicc_write(sc, GICC_CTRL, 0); /* disable all interrupts */ 534 gicd_write(sc, GICD_CTRL, 0); /* disable all interrupts */ 535 536 gicc_write(sc, GICC_PMR, 0xff); 537 uint32_t pmr = gicc_read(sc, GICC_PMR); 538 u_int priorities = 1 << popcount32(pmr); 539 540 /* 541 * Let's find out how many real sources we have. 542 */ 543 for (size_t i = 0, group = 0; 544 i < sc->sc_pic.pic_maxsources; 545 i += 32, group++) { 546 /* 547 * To figure what sources are real, one enables all interrupts 548 * and then reads back the enable mask so which ones really 549 * got enabled. 550 */ 551 gicd_write(sc, GICD_ISENABLERn(group), 0xffffffff); 552 uint32_t valid = gicd_read(sc, GICD_ISENABLERn(group)); 553 554 /* 555 * Now disable (clear enable) them again. 556 */ 557 gicd_write(sc, GICD_ICENABLERn(group), valid); 558 559 /* 560 * Count how many are valid. 561 */ 562 sc->sc_gic_lines += popcount32(valid); 563 sc->sc_gic_valid_lines[group] = valid; 564 } 565 566 pic_add(&sc->sc_pic, 0); 567 568 /* 569 * Force the GICD to IPL_HIGH and then enable interrupts. 570 */ 571 struct cpu_info * const ci = curcpu(); 572 KASSERTMSG(ci->ci_cpl == IPL_HIGH, "ipl %d not IPL_HIGH", ci->ci_cpl); 573 armgic_set_priority(&sc->sc_pic, ci->ci_cpl); // set PMR 574 gicd_write(sc, GICD_CTRL, GICD_CTRL_Enable); // enable Distributer 575 gicc_write(sc, GICC_CTRL, GICC_CTRL_V1_Enable); // enable CPU interrupts 576 cpsie(I32_bit); // allow interrupt exceptions 577 578 /* 579 * For each line that isn't valid, we set the intrsource for it to 580 * point at a dummy source so that pic_intr_establish will fail for it. 581 */ 582 for (size_t i = 0, group = 0; 583 i < sc->sc_pic.pic_maxsources; 584 i += 32, group++) { 585 uint32_t invalid = ~sc->sc_gic_valid_lines[group]; 586 for (size_t j = 0; invalid && j < 32; j++, invalid >>= 1) { 587 if (invalid & 1) { 588 sc->sc_pic.pic_sources[i + j] = 589 &armgic_dummy_source; 590 } 591 } 592 } 593#ifdef __HAVE_PIC_FAST_SOFTINTS 594 intr_establish(SOFTINT_BIO, IPL_SOFTBIO, IST_EDGE, 595 pic_handle_softint, (void *)SOFTINT_BIO); 596 intr_establish(SOFTINT_CLOCK, IPL_SOFTCLOCK, IST_EDGE, 597 pic_handle_softint, (void *)SOFTINT_CLOCK); 598 intr_establish(SOFTINT_NET, IPL_SOFTNET, IST_EDGE, 599 pic_handle_softint, (void *)SOFTINT_NET); 600 intr_establish(SOFTINT_SERIAL, IPL_SOFTSERIAL, IST_EDGE, 601 pic_handle_softint, (void *)SOFTINT_SERIAL); 602#endif 603#ifdef MULTIPROCESSOR 604 intr_establish(ARMGIC_SGI_IPIBASE + IPI_AST, IPL_VM, IST_EDGE, 605 pic_ipi_nop, (void *)-1); 606 intr_establish(ARMGIC_SGI_IPIBASE + IPI_XCALL, IPL_VM, IST_EDGE, 607 pic_ipi_xcall, (void *)-1); 608 intr_establish(ARMGIC_SGI_IPIBASE + IPI_NOP, IPL_VM, IST_EDGE, 609 pic_ipi_nop, (void *)-1); 610 intr_establish(ARMGIC_SGI_IPIBASE + IPI_SHOOTDOWN, IPL_VM, IST_EDGE, 611 pic_ipi_shootdown, (void *)-1); 612#ifdef DDB 613 intr_establish(ARMGIC_SGI_IPIBASE + IPI_DDB, IPL_HIGH, IST_EDGE, 614 pic_ipi_ddb, NULL); 615#endif 616#ifdef __HAVE_PREEMPTION 617 intr_establish(ARMGIC_SGI_IPIBASE + IPI_KPREEMPT, IPL_VM, IST_EDGE, 618 pic_ipi_nop, (void *)-1); 619#endif 620 armgic_cpu_init(&sc->sc_pic, curcpu()); 621#endif 622 623 aprint_normal(": Generic Interrupt Controller, " 624 "%zu sources (%zu valid)\n", 625 sc->sc_pic.pic_maxsources, sc->sc_gic_lines); 626 627 const u_int ppis = popcount32(sc->sc_gic_valid_lines[0] >> 16); 628 const u_int sgis = popcount32(sc->sc_gic_valid_lines[0] & 0xffff); 629 aprint_normal_dev(sc->sc_dev, "%u Priorities, %zu SPIs, %u PPIs, %u SGIs\n", 630 priorities, sc->sc_gic_lines - ppis - sgis, ppis, sgis); 631} 632 633CFATTACH_DECL_NEW(armgic, 0, 634 armgic_match, armgic_attach, NULL, NULL); 635