openpic.c (47243B)
1/* 2 * OpenPIC emulation 3 * 4 * Copyright (c) 2004 Jocelyn Mayer 5 * 2011 Alexander Graf 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a copy 8 * of this software and associated documentation files (the "Software"), to deal 9 * in the Software without restriction, including without limitation the rights 10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 11 * copies of the Software, and to permit persons to whom the Software is 12 * furnished to do so, subject to the following conditions: 13 * 14 * The above copyright notice and this permission notice shall be included in 15 * all copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 23 * THE SOFTWARE. 24 */ 25/* 26 * 27 * Based on OpenPic implementations: 28 * - Motorola MPC8245 & MPC8540 user manuals. 29 * - Motorola Harrier programmer manual 30 * 31 */ 32 33#include "qemu/osdep.h" 34#include "hw/irq.h" 35#include "hw/ppc/mac.h" 36#include "hw/pci/pci.h" 37#include "hw/ppc/openpic.h" 38#include "hw/ppc/ppc_e500.h" 39#include "hw/qdev-properties.h" 40#include "hw/sysbus.h" 41#include "migration/vmstate.h" 42#include "hw/pci/msi.h" 43#include "qapi/error.h" 44#include "qemu/bitops.h" 45#include "qapi/qmp/qerror.h" 46#include "qemu/module.h" 47#include "qemu/timer.h" 48#include "qemu/error-report.h" 49 50/* #define DEBUG_OPENPIC */ 51 52#ifdef DEBUG_OPENPIC 53static const int debug_openpic = 1; 54#else 55static const int debug_openpic = 0; 56#endif 57 58static int get_current_cpu(void); 59#define DPRINTF(fmt, ...) do { \ 60 if (debug_openpic) { \ 61 info_report("Core%d: " fmt, get_current_cpu(), ## __VA_ARGS__); \ 62 } \ 63 } while (0) 64 65/* OpenPIC capability flags */ 66#define OPENPIC_FLAG_IDR_CRIT (1 << 0) 67#define OPENPIC_FLAG_ILR (2 << 0) 68 69/* OpenPIC address map */ 70#define OPENPIC_GLB_REG_START 0x0 71#define OPENPIC_GLB_REG_SIZE 0x10F0 72#define OPENPIC_TMR_REG_START 0x10F0 73#define OPENPIC_TMR_REG_SIZE 0x220 74#define OPENPIC_MSI_REG_START 0x1600 75#define OPENPIC_MSI_REG_SIZE 0x200 76#define OPENPIC_SUMMARY_REG_START 0x3800 77#define OPENPIC_SUMMARY_REG_SIZE 0x800 78#define OPENPIC_SRC_REG_START 0x10000 79#define OPENPIC_SRC_REG_SIZE (OPENPIC_MAX_SRC * 0x20) 80#define OPENPIC_CPU_REG_START 0x20000 81#define OPENPIC_CPU_REG_SIZE 0x100 + ((MAX_CPU - 1) * 0x1000) 82 83static FslMpicInfo fsl_mpic_20 = { 84 .max_ext = 12, 85}; 86 87static FslMpicInfo fsl_mpic_42 = { 88 .max_ext = 12, 89}; 90 91#define FRR_NIRQ_SHIFT 16 92#define FRR_NCPU_SHIFT 8 93#define FRR_VID_SHIFT 0 94 95#define VID_REVISION_1_2 2 96#define VID_REVISION_1_3 3 97 98#define VIR_GENERIC 0x00000000 /* Generic Vendor ID */ 99#define VIR_MPIC2A 0x00004614 /* IBM MPIC-2A */ 100 101#define GCR_RESET 0x80000000 102#define GCR_MODE_PASS 0x00000000 103#define GCR_MODE_MIXED 0x20000000 104#define GCR_MODE_PROXY 0x60000000 105 106#define TBCR_CI 0x80000000 /* count inhibit */ 107#define TCCR_TOG 0x80000000 /* toggles when decrement to zero */ 108 109#define IDR_EP_SHIFT 31 110#define IDR_EP_MASK (1U << IDR_EP_SHIFT) 111#define IDR_CI0_SHIFT 30 112#define IDR_CI1_SHIFT 29 113#define IDR_P1_SHIFT 1 114#define IDR_P0_SHIFT 0 115 116#define ILR_INTTGT_MASK 0x000000ff 117#define ILR_INTTGT_INT 0x00 118#define ILR_INTTGT_CINT 0x01 /* critical */ 119#define ILR_INTTGT_MCP 0x02 /* machine check */ 120 121/* 122 * The currently supported INTTGT values happen to be the same as QEMU's 123 * openpic output codes, but don't depend on this. The output codes 124 * could change (unlikely, but...) or support could be added for 125 * more INTTGT values. 126 */ 127static const int inttgt_output[][2] = { 128 { ILR_INTTGT_INT, OPENPIC_OUTPUT_INT }, 129 { ILR_INTTGT_CINT, OPENPIC_OUTPUT_CINT }, 130 { ILR_INTTGT_MCP, OPENPIC_OUTPUT_MCK }, 131}; 132 133static int inttgt_to_output(int inttgt) 134{ 135 int i; 136 137 for (i = 0; i < ARRAY_SIZE(inttgt_output); i++) { 138 if (inttgt_output[i][0] == inttgt) { 139 return inttgt_output[i][1]; 140 } 141 } 142 143 error_report("%s: unsupported inttgt %d", __func__, inttgt); 144 return OPENPIC_OUTPUT_INT; 145} 146 147static int output_to_inttgt(int output) 148{ 149 int i; 150 151 for (i = 0; i < ARRAY_SIZE(inttgt_output); i++) { 152 if (inttgt_output[i][1] == output) { 153 return inttgt_output[i][0]; 154 } 155 } 156 157 abort(); 158} 159 160#define MSIIR_OFFSET 0x140 161#define MSIIR_SRS_SHIFT 29 162#define MSIIR_SRS_MASK (0x7 << MSIIR_SRS_SHIFT) 163#define MSIIR_IBS_SHIFT 24 164#define MSIIR_IBS_MASK (0x1f << MSIIR_IBS_SHIFT) 165 166static int get_current_cpu(void) 167{ 168 if (!current_cpu) { 169 return -1; 170 } 171 172 return current_cpu->cpu_index; 173} 174 175static uint32_t openpic_cpu_read_internal(void *opaque, hwaddr addr, 176 int idx); 177static void openpic_cpu_write_internal(void *opaque, hwaddr addr, 178 uint32_t val, int idx); 179static void openpic_reset(DeviceState *d); 180 181/* 182 * Convert between openpic clock ticks and nanosecs. In the hardware the clock 183 * frequency is driven by board inputs to the PIC which the PIC would then 184 * divide by 4 or 8. For now hard code to 25MZ. 185 */ 186#define OPENPIC_TIMER_FREQ_MHZ 25 187#define OPENPIC_TIMER_NS_PER_TICK (1000 / OPENPIC_TIMER_FREQ_MHZ) 188static inline uint64_t ns_to_ticks(uint64_t ns) 189{ 190 return ns / OPENPIC_TIMER_NS_PER_TICK; 191} 192static inline uint64_t ticks_to_ns(uint64_t ticks) 193{ 194 return ticks * OPENPIC_TIMER_NS_PER_TICK; 195} 196 197static inline void IRQ_setbit(IRQQueue *q, int n_IRQ) 198{ 199 set_bit(n_IRQ, q->queue); 200} 201 202static inline void IRQ_resetbit(IRQQueue *q, int n_IRQ) 203{ 204 clear_bit(n_IRQ, q->queue); 205} 206 207static void IRQ_check(OpenPICState *opp, IRQQueue *q) 208{ 209 int irq = -1; 210 int next = -1; 211 int priority = -1; 212 213 for (;;) { 214 irq = find_next_bit(q->queue, opp->max_irq, irq + 1); 215 if (irq == opp->max_irq) { 216 break; 217 } 218 219 DPRINTF("IRQ_check: irq %d set ivpr_pr=%d pr=%d", 220 irq, IVPR_PRIORITY(opp->src[irq].ivpr), priority); 221 222 if (IVPR_PRIORITY(opp->src[irq].ivpr) > priority) { 223 next = irq; 224 priority = IVPR_PRIORITY(opp->src[irq].ivpr); 225 } 226 } 227 228 q->next = next; 229 q->priority = priority; 230} 231 232static int IRQ_get_next(OpenPICState *opp, IRQQueue *q) 233{ 234 /* XXX: optimize */ 235 IRQ_check(opp, q); 236 237 return q->next; 238} 239 240static void IRQ_local_pipe(OpenPICState *opp, int n_CPU, int n_IRQ, 241 bool active, bool was_active) 242{ 243 IRQDest *dst; 244 IRQSource *src; 245 int priority; 246 247 dst = &opp->dst[n_CPU]; 248 src = &opp->src[n_IRQ]; 249 250 DPRINTF("%s: IRQ %d active %d was %d", 251 __func__, n_IRQ, active, was_active); 252 253 if (src->output != OPENPIC_OUTPUT_INT) { 254 DPRINTF("%s: output %d irq %d active %d was %d count %d", 255 __func__, src->output, n_IRQ, active, was_active, 256 dst->outputs_active[src->output]); 257 258 /* 259 * On Freescale MPIC, critical interrupts ignore priority, 260 * IACK, EOI, etc. Before MPIC v4.1 they also ignore 261 * masking. 262 */ 263 if (active) { 264 if (!was_active && dst->outputs_active[src->output]++ == 0) { 265 DPRINTF("%s: Raise OpenPIC output %d cpu %d irq %d", 266 __func__, src->output, n_CPU, n_IRQ); 267 qemu_irq_raise(dst->irqs[src->output]); 268 } 269 } else { 270 if (was_active && --dst->outputs_active[src->output] == 0) { 271 DPRINTF("%s: Lower OpenPIC output %d cpu %d irq %d", 272 __func__, src->output, n_CPU, n_IRQ); 273 qemu_irq_lower(dst->irqs[src->output]); 274 } 275 } 276 277 return; 278 } 279 280 priority = IVPR_PRIORITY(src->ivpr); 281 282 /* 283 * Even if the interrupt doesn't have enough priority, 284 * it is still raised, in case ctpr is lowered later. 285 */ 286 if (active) { 287 IRQ_setbit(&dst->raised, n_IRQ); 288 } else { 289 IRQ_resetbit(&dst->raised, n_IRQ); 290 } 291 292 IRQ_check(opp, &dst->raised); 293 294 if (active && priority <= dst->ctpr) { 295 DPRINTF("%s: IRQ %d priority %d too low for ctpr %d on CPU %d", 296 __func__, n_IRQ, priority, dst->ctpr, n_CPU); 297 active = 0; 298 } 299 300 if (active) { 301 if (IRQ_get_next(opp, &dst->servicing) >= 0 && 302 priority <= dst->servicing.priority) { 303 DPRINTF("%s: IRQ %d is hidden by servicing IRQ %d on CPU %d", 304 __func__, n_IRQ, dst->servicing.next, n_CPU); 305 } else { 306 DPRINTF("%s: Raise OpenPIC INT output cpu %d irq %d/%d", 307 __func__, n_CPU, n_IRQ, dst->raised.next); 308 qemu_irq_raise(opp->dst[n_CPU].irqs[OPENPIC_OUTPUT_INT]); 309 } 310 } else { 311 IRQ_get_next(opp, &dst->servicing); 312 if (dst->raised.priority > dst->ctpr && 313 dst->raised.priority > dst->servicing.priority) { 314 DPRINTF("%s: IRQ %d inactive, IRQ %d prio %d above %d/%d, CPU %d", 315 __func__, n_IRQ, dst->raised.next, dst->raised.priority, 316 dst->ctpr, dst->servicing.priority, n_CPU); 317 /* IRQ line stays asserted */ 318 } else { 319 DPRINTF("%s: IRQ %d inactive, current prio %d/%d, CPU %d", 320 __func__, n_IRQ, dst->ctpr, dst->servicing.priority, n_CPU); 321 qemu_irq_lower(opp->dst[n_CPU].irqs[OPENPIC_OUTPUT_INT]); 322 } 323 } 324} 325 326/* update pic state because registers for n_IRQ have changed value */ 327static void openpic_update_irq(OpenPICState *opp, int n_IRQ) 328{ 329 IRQSource *src; 330 bool active, was_active; 331 int i; 332 333 src = &opp->src[n_IRQ]; 334 active = src->pending; 335 336 if ((src->ivpr & IVPR_MASK_MASK) && !src->nomask) { 337 /* Interrupt source is disabled */ 338 DPRINTF("%s: IRQ %d is disabled", __func__, n_IRQ); 339 active = false; 340 } 341 342 was_active = !!(src->ivpr & IVPR_ACTIVITY_MASK); 343 344 /* 345 * We don't have a similar check for already-active because 346 * ctpr may have changed and we need to withdraw the interrupt. 347 */ 348 if (!active && !was_active) { 349 DPRINTF("%s: IRQ %d is already inactive", __func__, n_IRQ); 350 return; 351 } 352 353 if (active) { 354 src->ivpr |= IVPR_ACTIVITY_MASK; 355 } else { 356 src->ivpr &= ~IVPR_ACTIVITY_MASK; 357 } 358 359 if (src->destmask == 0) { 360 /* No target */ 361 DPRINTF("%s: IRQ %d has no target", __func__, n_IRQ); 362 return; 363 } 364 365 if (src->destmask == (1 << src->last_cpu)) { 366 /* Only one CPU is allowed to receive this IRQ */ 367 IRQ_local_pipe(opp, src->last_cpu, n_IRQ, active, was_active); 368 } else if (!(src->ivpr & IVPR_MODE_MASK)) { 369 /* Directed delivery mode */ 370 for (i = 0; i < opp->nb_cpus; i++) { 371 if (src->destmask & (1 << i)) { 372 IRQ_local_pipe(opp, i, n_IRQ, active, was_active); 373 } 374 } 375 } else { 376 /* Distributed delivery mode */ 377 for (i = src->last_cpu + 1; i != src->last_cpu; i++) { 378 if (i == opp->nb_cpus) { 379 i = 0; 380 } 381 if (src->destmask & (1 << i)) { 382 IRQ_local_pipe(opp, i, n_IRQ, active, was_active); 383 src->last_cpu = i; 384 break; 385 } 386 } 387 } 388} 389 390static void openpic_set_irq(void *opaque, int n_IRQ, int level) 391{ 392 OpenPICState *opp = opaque; 393 IRQSource *src; 394 395 if (n_IRQ >= OPENPIC_MAX_IRQ) { 396 error_report("%s: IRQ %d out of range", __func__, n_IRQ); 397 abort(); 398 } 399 400 src = &opp->src[n_IRQ]; 401 DPRINTF("openpic: set irq %d = %d ivpr=0x%08x", 402 n_IRQ, level, src->ivpr); 403 if (src->level) { 404 /* level-sensitive irq */ 405 src->pending = level; 406 openpic_update_irq(opp, n_IRQ); 407 } else { 408 /* edge-sensitive irq */ 409 if (level) { 410 src->pending = 1; 411 openpic_update_irq(opp, n_IRQ); 412 } 413 414 if (src->output != OPENPIC_OUTPUT_INT) { 415 /* 416 * Edge-triggered interrupts shouldn't be used 417 * with non-INT delivery, but just in case, 418 * try to make it do something sane rather than 419 * cause an interrupt storm. This is close to 420 * what you'd probably see happen in real hardware. 421 */ 422 src->pending = 0; 423 openpic_update_irq(opp, n_IRQ); 424 } 425 } 426} 427 428static inline uint32_t read_IRQreg_idr(OpenPICState *opp, int n_IRQ) 429{ 430 return opp->src[n_IRQ].idr; 431} 432 433static inline uint32_t read_IRQreg_ilr(OpenPICState *opp, int n_IRQ) 434{ 435 if (opp->flags & OPENPIC_FLAG_ILR) { 436 return output_to_inttgt(opp->src[n_IRQ].output); 437 } 438 439 return 0xffffffff; 440} 441 442static inline uint32_t read_IRQreg_ivpr(OpenPICState *opp, int n_IRQ) 443{ 444 return opp->src[n_IRQ].ivpr; 445} 446 447static inline void write_IRQreg_idr(OpenPICState *opp, int n_IRQ, uint32_t val) 448{ 449 IRQSource *src = &opp->src[n_IRQ]; 450 uint32_t normal_mask = (1UL << opp->nb_cpus) - 1; 451 uint32_t crit_mask = 0; 452 uint32_t mask = normal_mask; 453 int crit_shift = IDR_EP_SHIFT - opp->nb_cpus; 454 int i; 455 456 if (opp->flags & OPENPIC_FLAG_IDR_CRIT) { 457 crit_mask = mask << crit_shift; 458 mask |= crit_mask | IDR_EP; 459 } 460 461 src->idr = val & mask; 462 DPRINTF("Set IDR %d to 0x%08x", n_IRQ, src->idr); 463 464 if (opp->flags & OPENPIC_FLAG_IDR_CRIT) { 465 if (src->idr & crit_mask) { 466 if (src->idr & normal_mask) { 467 DPRINTF("%s: IRQ configured for multiple output types, using " 468 "critical", __func__); 469 } 470 471 src->output = OPENPIC_OUTPUT_CINT; 472 src->nomask = true; 473 src->destmask = 0; 474 475 for (i = 0; i < opp->nb_cpus; i++) { 476 int n_ci = IDR_CI0_SHIFT - i; 477 478 if (src->idr & (1UL << n_ci)) { 479 src->destmask |= 1UL << i; 480 } 481 } 482 } else { 483 src->output = OPENPIC_OUTPUT_INT; 484 src->nomask = false; 485 src->destmask = src->idr & normal_mask; 486 } 487 } else { 488 src->destmask = src->idr; 489 } 490} 491 492static inline void write_IRQreg_ilr(OpenPICState *opp, int n_IRQ, uint32_t val) 493{ 494 if (opp->flags & OPENPIC_FLAG_ILR) { 495 IRQSource *src = &opp->src[n_IRQ]; 496 497 src->output = inttgt_to_output(val & ILR_INTTGT_MASK); 498 DPRINTF("Set ILR %d to 0x%08x, output %d", n_IRQ, src->idr, 499 src->output); 500 501 /* TODO: on MPIC v4.0 only, set nomask for non-INT */ 502 } 503} 504 505static inline void write_IRQreg_ivpr(OpenPICState *opp, int n_IRQ, uint32_t val) 506{ 507 uint32_t mask; 508 509 /* 510 * NOTE when implementing newer FSL MPIC models: starting with v4.0, 511 * the polarity bit is read-only on internal interrupts. 512 */ 513 mask = IVPR_MASK_MASK | IVPR_PRIORITY_MASK | IVPR_SENSE_MASK | 514 IVPR_POLARITY_MASK | opp->vector_mask; 515 516 /* ACTIVITY bit is read-only */ 517 opp->src[n_IRQ].ivpr = 518 (opp->src[n_IRQ].ivpr & IVPR_ACTIVITY_MASK) | (val & mask); 519 520 /* 521 * For FSL internal interrupts, The sense bit is reserved and zero, 522 * and the interrupt is always level-triggered. Timers and IPIs 523 * have no sense or polarity bits, and are edge-triggered. 524 */ 525 switch (opp->src[n_IRQ].type) { 526 case IRQ_TYPE_NORMAL: 527 opp->src[n_IRQ].level = !!(opp->src[n_IRQ].ivpr & IVPR_SENSE_MASK); 528 break; 529 530 case IRQ_TYPE_FSLINT: 531 opp->src[n_IRQ].ivpr &= ~IVPR_SENSE_MASK; 532 break; 533 534 case IRQ_TYPE_FSLSPECIAL: 535 opp->src[n_IRQ].ivpr &= ~(IVPR_POLARITY_MASK | IVPR_SENSE_MASK); 536 break; 537 } 538 539 openpic_update_irq(opp, n_IRQ); 540 DPRINTF("Set IVPR %d to 0x%08x -> 0x%08x", n_IRQ, val, 541 opp->src[n_IRQ].ivpr); 542} 543 544static void openpic_gcr_write(OpenPICState *opp, uint64_t val) 545{ 546 bool mpic_proxy = false; 547 548 if (val & GCR_RESET) { 549 openpic_reset(DEVICE(opp)); 550 return; 551 } 552 553 opp->gcr &= ~opp->mpic_mode_mask; 554 opp->gcr |= val & opp->mpic_mode_mask; 555 556 /* Set external proxy mode */ 557 if ((val & opp->mpic_mode_mask) == GCR_MODE_PROXY) { 558 mpic_proxy = true; 559 } 560 561 ppce500_set_mpic_proxy(mpic_proxy); 562} 563 564static void openpic_gbl_write(void *opaque, hwaddr addr, uint64_t val, 565 unsigned len) 566{ 567 OpenPICState *opp = opaque; 568 IRQDest *dst; 569 int idx; 570 571 DPRINTF("%s: addr %#" HWADDR_PRIx " <= %08" PRIx64, 572 __func__, addr, val); 573 if (addr & 0xF) { 574 return; 575 } 576 switch (addr) { 577 case 0x00: /* Block Revision Register1 (BRR1) is Readonly */ 578 break; 579 case 0x40: 580 case 0x50: 581 case 0x60: 582 case 0x70: 583 case 0x80: 584 case 0x90: 585 case 0xA0: 586 case 0xB0: 587 openpic_cpu_write_internal(opp, addr, val, get_current_cpu()); 588 break; 589 case 0x1000: /* FRR */ 590 break; 591 case 0x1020: /* GCR */ 592 openpic_gcr_write(opp, val); 593 break; 594 case 0x1080: /* VIR */ 595 break; 596 case 0x1090: /* PIR */ 597 for (idx = 0; idx < opp->nb_cpus; idx++) { 598 if ((val & (1 << idx)) && !(opp->pir & (1 << idx))) { 599 DPRINTF("Raise OpenPIC RESET output for CPU %d", idx); 600 dst = &opp->dst[idx]; 601 qemu_irq_raise(dst->irqs[OPENPIC_OUTPUT_RESET]); 602 } else if (!(val & (1 << idx)) && (opp->pir & (1 << idx))) { 603 DPRINTF("Lower OpenPIC RESET output for CPU %d", idx); 604 dst = &opp->dst[idx]; 605 qemu_irq_lower(dst->irqs[OPENPIC_OUTPUT_RESET]); 606 } 607 } 608 opp->pir = val; 609 break; 610 case 0x10A0: /* IPI_IVPR */ 611 case 0x10B0: 612 case 0x10C0: 613 case 0x10D0: 614 { 615 int idx; 616 idx = (addr - 0x10A0) >> 4; 617 write_IRQreg_ivpr(opp, opp->irq_ipi0 + idx, val); 618 } 619 break; 620 case 0x10E0: /* SPVE */ 621 opp->spve = val & opp->vector_mask; 622 break; 623 default: 624 break; 625 } 626} 627 628static uint64_t openpic_gbl_read(void *opaque, hwaddr addr, unsigned len) 629{ 630 OpenPICState *opp = opaque; 631 uint32_t retval; 632 633 DPRINTF("%s: addr %#" HWADDR_PRIx, __func__, addr); 634 retval = 0xFFFFFFFF; 635 if (addr & 0xF) { 636 return retval; 637 } 638 switch (addr) { 639 case 0x1000: /* FRR */ 640 retval = opp->frr; 641 break; 642 case 0x1020: /* GCR */ 643 retval = opp->gcr; 644 break; 645 case 0x1080: /* VIR */ 646 retval = opp->vir; 647 break; 648 case 0x1090: /* PIR */ 649 retval = 0x00000000; 650 break; 651 case 0x00: /* Block Revision Register1 (BRR1) */ 652 retval = opp->brr1; 653 break; 654 case 0x40: 655 case 0x50: 656 case 0x60: 657 case 0x70: 658 case 0x80: 659 case 0x90: 660 case 0xA0: 661 case 0xB0: 662 retval = openpic_cpu_read_internal(opp, addr, get_current_cpu()); 663 break; 664 case 0x10A0: /* IPI_IVPR */ 665 case 0x10B0: 666 case 0x10C0: 667 case 0x10D0: 668 { 669 int idx; 670 idx = (addr - 0x10A0) >> 4; 671 retval = read_IRQreg_ivpr(opp, opp->irq_ipi0 + idx); 672 } 673 break; 674 case 0x10E0: /* SPVE */ 675 retval = opp->spve; 676 break; 677 default: 678 break; 679 } 680 DPRINTF("%s: => 0x%08x", __func__, retval); 681 682 return retval; 683} 684 685static void openpic_tmr_set_tmr(OpenPICTimer *tmr, uint32_t val, bool enabled); 686 687static void qemu_timer_cb(void *opaque) 688{ 689 OpenPICTimer *tmr = opaque; 690 OpenPICState *opp = tmr->opp; 691 uint32_t n_IRQ = tmr->n_IRQ; 692 uint32_t val = tmr->tbcr & ~TBCR_CI; 693 uint32_t tog = ((tmr->tccr & TCCR_TOG) ^ TCCR_TOG); /* invert toggle. */ 694 695 DPRINTF("%s n_IRQ=%d", __func__, n_IRQ); 696 /* Reload current count from base count and setup timer. */ 697 tmr->tccr = val | tog; 698 openpic_tmr_set_tmr(tmr, val, /*enabled=*/true); 699 /* Raise the interrupt. */ 700 opp->src[n_IRQ].destmask = read_IRQreg_idr(opp, n_IRQ); 701 openpic_set_irq(opp, n_IRQ, 1); 702 openpic_set_irq(opp, n_IRQ, 0); 703} 704 705/* 706 * If enabled is true, arranges for an interrupt to be raised val clocks into 707 * the future, if enabled is false cancels the timer. 708 */ 709static void openpic_tmr_set_tmr(OpenPICTimer *tmr, uint32_t val, bool enabled) 710{ 711 uint64_t ns = ticks_to_ns(val & ~TCCR_TOG); 712 /* 713 * A count of zero causes a timer to be set to expire immediately. This 714 * effectively stops the simulation since the timer is constantly expiring 715 * which prevents guest code execution, so we don't honor that 716 * configuration. On real hardware, this situation would generate an 717 * interrupt on every clock cycle if the interrupt was unmasked. 718 */ 719 if ((ns == 0) || !enabled) { 720 tmr->qemu_timer_active = false; 721 tmr->tccr = tmr->tccr & TCCR_TOG; 722 timer_del(tmr->qemu_timer); /* set timer to never expire. */ 723 } else { 724 tmr->qemu_timer_active = true; 725 uint64_t now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); 726 tmr->origin_time = now; 727 timer_mod(tmr->qemu_timer, now + ns); /* set timer expiration. */ 728 } 729} 730 731/* 732 * Returns the currrent tccr value, i.e., timer value (in clocks) with 733 * appropriate TOG. 734 */ 735static uint64_t openpic_tmr_get_timer(OpenPICTimer *tmr) 736{ 737 uint64_t retval; 738 if (!tmr->qemu_timer_active) { 739 retval = tmr->tccr; 740 } else { 741 uint64_t now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); 742 uint64_t used = now - tmr->origin_time; /* nsecs */ 743 uint32_t used_ticks = (uint32_t)ns_to_ticks(used); 744 uint32_t count = (tmr->tccr & ~TCCR_TOG) - used_ticks; 745 retval = (uint32_t)((tmr->tccr & TCCR_TOG) | (count & ~TCCR_TOG)); 746 } 747 return retval; 748} 749 750static void openpic_tmr_write(void *opaque, hwaddr addr, uint64_t val, 751 unsigned len) 752{ 753 OpenPICState *opp = opaque; 754 int idx; 755 756 DPRINTF("%s: addr %#" HWADDR_PRIx " <= %08" PRIx64, 757 __func__, (addr + 0x10f0), val); 758 if (addr & 0xF) { 759 return; 760 } 761 762 if (addr == 0) { 763 /* TFRR */ 764 opp->tfrr = val; 765 return; 766 } 767 addr -= 0x10; /* correct for TFRR */ 768 idx = (addr >> 6) & 0x3; 769 770 switch (addr & 0x30) { 771 case 0x00: /* TCCR */ 772 break; 773 case 0x10: /* TBCR */ 774 /* Did the enable status change? */ 775 if ((opp->timers[idx].tbcr & TBCR_CI) != (val & TBCR_CI)) { 776 /* Did "Count Inhibit" transition from 1 to 0? */ 777 if ((val & TBCR_CI) == 0) { 778 opp->timers[idx].tccr = val & ~TCCR_TOG; 779 } 780 openpic_tmr_set_tmr(&opp->timers[idx], 781 (val & ~TBCR_CI), 782 /*enabled=*/((val & TBCR_CI) == 0)); 783 } 784 opp->timers[idx].tbcr = val; 785 break; 786 case 0x20: /* TVPR */ 787 write_IRQreg_ivpr(opp, opp->irq_tim0 + idx, val); 788 break; 789 case 0x30: /* TDR */ 790 write_IRQreg_idr(opp, opp->irq_tim0 + idx, val); 791 break; 792 } 793} 794 795static uint64_t openpic_tmr_read(void *opaque, hwaddr addr, unsigned len) 796{ 797 OpenPICState *opp = opaque; 798 uint32_t retval = -1; 799 int idx; 800 801 DPRINTF("%s: addr %#" HWADDR_PRIx, __func__, addr + 0x10f0); 802 if (addr & 0xF) { 803 goto out; 804 } 805 if (addr == 0) { 806 /* TFRR */ 807 retval = opp->tfrr; 808 goto out; 809 } 810 addr -= 0x10; /* correct for TFRR */ 811 idx = (addr >> 6) & 0x3; 812 switch (addr & 0x30) { 813 case 0x00: /* TCCR */ 814 retval = openpic_tmr_get_timer(&opp->timers[idx]); 815 break; 816 case 0x10: /* TBCR */ 817 retval = opp->timers[idx].tbcr; 818 break; 819 case 0x20: /* TVPR */ 820 retval = read_IRQreg_ivpr(opp, opp->irq_tim0 + idx); 821 break; 822 case 0x30: /* TDR */ 823 retval = read_IRQreg_idr(opp, opp->irq_tim0 + idx); 824 break; 825 } 826 827out: 828 DPRINTF("%s: => 0x%08x", __func__, retval); 829 830 return retval; 831} 832 833static void openpic_src_write(void *opaque, hwaddr addr, uint64_t val, 834 unsigned len) 835{ 836 OpenPICState *opp = opaque; 837 int idx; 838 839 DPRINTF("%s: addr %#" HWADDR_PRIx " <= %08" PRIx64, 840 __func__, addr, val); 841 842 addr = addr & 0xffff; 843 idx = addr >> 5; 844 845 switch (addr & 0x1f) { 846 case 0x00: 847 write_IRQreg_ivpr(opp, idx, val); 848 break; 849 case 0x10: 850 write_IRQreg_idr(opp, idx, val); 851 break; 852 case 0x18: 853 write_IRQreg_ilr(opp, idx, val); 854 break; 855 } 856} 857 858static uint64_t openpic_src_read(void *opaque, uint64_t addr, unsigned len) 859{ 860 OpenPICState *opp = opaque; 861 uint32_t retval; 862 int idx; 863 864 DPRINTF("%s: addr %#" HWADDR_PRIx, __func__, addr); 865 retval = 0xFFFFFFFF; 866 867 addr = addr & 0xffff; 868 idx = addr >> 5; 869 870 switch (addr & 0x1f) { 871 case 0x00: 872 retval = read_IRQreg_ivpr(opp, idx); 873 break; 874 case 0x10: 875 retval = read_IRQreg_idr(opp, idx); 876 break; 877 case 0x18: 878 retval = read_IRQreg_ilr(opp, idx); 879 break; 880 } 881 882 DPRINTF("%s: => 0x%08x", __func__, retval); 883 return retval; 884} 885 886static void openpic_msi_write(void *opaque, hwaddr addr, uint64_t val, 887 unsigned size) 888{ 889 OpenPICState *opp = opaque; 890 int idx = opp->irq_msi; 891 int srs, ibs; 892 893 DPRINTF("%s: addr %#" HWADDR_PRIx " <= 0x%08" PRIx64, 894 __func__, addr, val); 895 if (addr & 0xF) { 896 return; 897 } 898 899 switch (addr) { 900 case MSIIR_OFFSET: 901 srs = val >> MSIIR_SRS_SHIFT; 902 idx += srs; 903 ibs = (val & MSIIR_IBS_MASK) >> MSIIR_IBS_SHIFT; 904 opp->msi[srs].msir |= 1 << ibs; 905 openpic_set_irq(opp, idx, 1); 906 break; 907 default: 908 /* most registers are read-only, thus ignored */ 909 break; 910 } 911} 912 913static uint64_t openpic_msi_read(void *opaque, hwaddr addr, unsigned size) 914{ 915 OpenPICState *opp = opaque; 916 uint64_t r = 0; 917 int i, srs; 918 919 DPRINTF("%s: addr %#" HWADDR_PRIx, __func__, addr); 920 if (addr & 0xF) { 921 return -1; 922 } 923 924 srs = addr >> 4; 925 926 switch (addr) { 927 case 0x00: 928 case 0x10: 929 case 0x20: 930 case 0x30: 931 case 0x40: 932 case 0x50: 933 case 0x60: 934 case 0x70: /* MSIRs */ 935 r = opp->msi[srs].msir; 936 /* Clear on read */ 937 opp->msi[srs].msir = 0; 938 openpic_set_irq(opp, opp->irq_msi + srs, 0); 939 break; 940 case 0x120: /* MSISR */ 941 for (i = 0; i < MAX_MSI; i++) { 942 r |= (opp->msi[i].msir ? 1 : 0) << i; 943 } 944 break; 945 } 946 947 return r; 948} 949 950static uint64_t openpic_summary_read(void *opaque, hwaddr addr, unsigned size) 951{ 952 uint64_t r = 0; 953 954 DPRINTF("%s: addr %#" HWADDR_PRIx, __func__, addr); 955 956 /* TODO: EISR/EIMR */ 957 958 return r; 959} 960 961static void openpic_summary_write(void *opaque, hwaddr addr, uint64_t val, 962 unsigned size) 963{ 964 DPRINTF("%s: addr %#" HWADDR_PRIx " <= 0x%08" PRIx64, 965 __func__, addr, val); 966 967 /* TODO: EISR/EIMR */ 968} 969 970static void openpic_cpu_write_internal(void *opaque, hwaddr addr, 971 uint32_t val, int idx) 972{ 973 OpenPICState *opp = opaque; 974 IRQSource *src; 975 IRQDest *dst; 976 int s_IRQ, n_IRQ; 977 978 DPRINTF("%s: cpu %d addr %#" HWADDR_PRIx " <= 0x%08x", __func__, idx, 979 addr, val); 980 981 if (idx < 0 || idx >= opp->nb_cpus) { 982 return; 983 } 984 985 if (addr & 0xF) { 986 return; 987 } 988 dst = &opp->dst[idx]; 989 addr &= 0xFF0; 990 switch (addr) { 991 case 0x40: /* IPIDR */ 992 case 0x50: 993 case 0x60: 994 case 0x70: 995 idx = (addr - 0x40) >> 4; 996 /* we use IDE as mask which CPUs to deliver the IPI to still. */ 997 opp->src[opp->irq_ipi0 + idx].destmask |= val; 998 openpic_set_irq(opp, opp->irq_ipi0 + idx, 1); 999 openpic_set_irq(opp, opp->irq_ipi0 + idx, 0); 1000 break; 1001 case 0x80: /* CTPR */ 1002 dst->ctpr = val & 0x0000000F; 1003 1004 DPRINTF("%s: set CPU %d ctpr to %d, raised %d servicing %d", 1005 __func__, idx, dst->ctpr, dst->raised.priority, 1006 dst->servicing.priority); 1007 1008 if (dst->raised.priority <= dst->ctpr) { 1009 DPRINTF("%s: Lower OpenPIC INT output cpu %d due to ctpr", 1010 __func__, idx); 1011 qemu_irq_lower(dst->irqs[OPENPIC_OUTPUT_INT]); 1012 } else if (dst->raised.priority > dst->servicing.priority) { 1013 DPRINTF("%s: Raise OpenPIC INT output cpu %d irq %d", 1014 __func__, idx, dst->raised.next); 1015 qemu_irq_raise(dst->irqs[OPENPIC_OUTPUT_INT]); 1016 } 1017 1018 break; 1019 case 0x90: /* WHOAMI */ 1020 /* Read-only register */ 1021 break; 1022 case 0xA0: /* IACK */ 1023 /* Read-only register */ 1024 break; 1025 case 0xB0: /* EOI */ 1026 DPRINTF("EOI"); 1027 s_IRQ = IRQ_get_next(opp, &dst->servicing); 1028 1029 if (s_IRQ < 0) { 1030 DPRINTF("%s: EOI with no interrupt in service", __func__); 1031 break; 1032 } 1033 1034 IRQ_resetbit(&dst->servicing, s_IRQ); 1035 /* Set up next servicing IRQ */ 1036 s_IRQ = IRQ_get_next(opp, &dst->servicing); 1037 /* Check queued interrupts. */ 1038 n_IRQ = IRQ_get_next(opp, &dst->raised); 1039 src = &opp->src[n_IRQ]; 1040 if (n_IRQ != -1 && 1041 (s_IRQ == -1 || 1042 IVPR_PRIORITY(src->ivpr) > dst->servicing.priority)) { 1043 DPRINTF("Raise OpenPIC INT output cpu %d irq %d", 1044 idx, n_IRQ); 1045 qemu_irq_raise(opp->dst[idx].irqs[OPENPIC_OUTPUT_INT]); 1046 } 1047 break; 1048 default: 1049 break; 1050 } 1051} 1052 1053static void openpic_cpu_write(void *opaque, hwaddr addr, uint64_t val, 1054 unsigned len) 1055{ 1056 openpic_cpu_write_internal(opaque, addr, val, (addr & 0x1f000) >> 12); 1057} 1058 1059 1060static uint32_t openpic_iack(OpenPICState *opp, IRQDest *dst, int cpu) 1061{ 1062 IRQSource *src; 1063 int retval, irq; 1064 1065 DPRINTF("Lower OpenPIC INT output"); 1066 qemu_irq_lower(dst->irqs[OPENPIC_OUTPUT_INT]); 1067 1068 irq = IRQ_get_next(opp, &dst->raised); 1069 DPRINTF("IACK: irq=%d", irq); 1070 1071 if (irq == -1) { 1072 /* No more interrupt pending */ 1073 return opp->spve; 1074 } 1075 1076 src = &opp->src[irq]; 1077 if (!(src->ivpr & IVPR_ACTIVITY_MASK) || 1078 !(IVPR_PRIORITY(src->ivpr) > dst->ctpr)) { 1079 error_report("%s: bad raised IRQ %d ctpr %d ivpr 0x%08x", 1080 __func__, irq, dst->ctpr, src->ivpr); 1081 openpic_update_irq(opp, irq); 1082 retval = opp->spve; 1083 } else { 1084 /* IRQ enter servicing state */ 1085 IRQ_setbit(&dst->servicing, irq); 1086 retval = IVPR_VECTOR(opp, src->ivpr); 1087 } 1088 1089 if (!src->level) { 1090 /* edge-sensitive IRQ */ 1091 src->ivpr &= ~IVPR_ACTIVITY_MASK; 1092 src->pending = 0; 1093 IRQ_resetbit(&dst->raised, irq); 1094 } 1095 1096 /* Timers and IPIs support multicast. */ 1097 if (((irq >= opp->irq_ipi0) && (irq < (opp->irq_ipi0 + OPENPIC_MAX_IPI))) || 1098 ((irq >= opp->irq_tim0) && (irq < (opp->irq_tim0 + OPENPIC_MAX_TMR)))) { 1099 DPRINTF("irq is IPI or TMR"); 1100 src->destmask &= ~(1 << cpu); 1101 if (src->destmask && !src->level) { 1102 /* trigger on CPUs that didn't know about it yet */ 1103 openpic_set_irq(opp, irq, 1); 1104 openpic_set_irq(opp, irq, 0); 1105 /* if all CPUs knew about it, set active bit again */ 1106 src->ivpr |= IVPR_ACTIVITY_MASK; 1107 } 1108 } 1109 1110 return retval; 1111} 1112 1113static uint32_t openpic_cpu_read_internal(void *opaque, hwaddr addr, 1114 int idx) 1115{ 1116 OpenPICState *opp = opaque; 1117 IRQDest *dst; 1118 uint32_t retval; 1119 1120 DPRINTF("%s: cpu %d addr %#" HWADDR_PRIx, __func__, idx, addr); 1121 retval = 0xFFFFFFFF; 1122 1123 if (idx < 0 || idx >= opp->nb_cpus) { 1124 return retval; 1125 } 1126 1127 if (addr & 0xF) { 1128 return retval; 1129 } 1130 dst = &opp->dst[idx]; 1131 addr &= 0xFF0; 1132 switch (addr) { 1133 case 0x80: /* CTPR */ 1134 retval = dst->ctpr; 1135 break; 1136 case 0x90: /* WHOAMI */ 1137 retval = idx; 1138 break; 1139 case 0xA0: /* IACK */ 1140 retval = openpic_iack(opp, dst, idx); 1141 break; 1142 case 0xB0: /* EOI */ 1143 retval = 0; 1144 break; 1145 default: 1146 break; 1147 } 1148 DPRINTF("%s: => 0x%08x", __func__, retval); 1149 1150 return retval; 1151} 1152 1153static uint64_t openpic_cpu_read(void *opaque, hwaddr addr, unsigned len) 1154{ 1155 return openpic_cpu_read_internal(opaque, addr, (addr & 0x1f000) >> 12); 1156} 1157 1158static const MemoryRegionOps openpic_glb_ops_le = { 1159 .write = openpic_gbl_write, 1160 .read = openpic_gbl_read, 1161 .endianness = DEVICE_LITTLE_ENDIAN, 1162 .impl = { 1163 .min_access_size = 4, 1164 .max_access_size = 4, 1165 }, 1166}; 1167 1168static const MemoryRegionOps openpic_glb_ops_be = { 1169 .write = openpic_gbl_write, 1170 .read = openpic_gbl_read, 1171 .endianness = DEVICE_BIG_ENDIAN, 1172 .impl = { 1173 .min_access_size = 4, 1174 .max_access_size = 4, 1175 }, 1176}; 1177 1178static const MemoryRegionOps openpic_tmr_ops_le = { 1179 .write = openpic_tmr_write, 1180 .read = openpic_tmr_read, 1181 .endianness = DEVICE_LITTLE_ENDIAN, 1182 .impl = { 1183 .min_access_size = 4, 1184 .max_access_size = 4, 1185 }, 1186}; 1187 1188static const MemoryRegionOps openpic_tmr_ops_be = { 1189 .write = openpic_tmr_write, 1190 .read = openpic_tmr_read, 1191 .endianness = DEVICE_BIG_ENDIAN, 1192 .impl = { 1193 .min_access_size = 4, 1194 .max_access_size = 4, 1195 }, 1196}; 1197 1198static const MemoryRegionOps openpic_cpu_ops_le = { 1199 .write = openpic_cpu_write, 1200 .read = openpic_cpu_read, 1201 .endianness = DEVICE_LITTLE_ENDIAN, 1202 .impl = { 1203 .min_access_size = 4, 1204 .max_access_size = 4, 1205 }, 1206}; 1207 1208static const MemoryRegionOps openpic_cpu_ops_be = { 1209 .write = openpic_cpu_write, 1210 .read = openpic_cpu_read, 1211 .endianness = DEVICE_BIG_ENDIAN, 1212 .impl = { 1213 .min_access_size = 4, 1214 .max_access_size = 4, 1215 }, 1216}; 1217 1218static const MemoryRegionOps openpic_src_ops_le = { 1219 .write = openpic_src_write, 1220 .read = openpic_src_read, 1221 .endianness = DEVICE_LITTLE_ENDIAN, 1222 .impl = { 1223 .min_access_size = 4, 1224 .max_access_size = 4, 1225 }, 1226}; 1227 1228static const MemoryRegionOps openpic_src_ops_be = { 1229 .write = openpic_src_write, 1230 .read = openpic_src_read, 1231 .endianness = DEVICE_BIG_ENDIAN, 1232 .impl = { 1233 .min_access_size = 4, 1234 .max_access_size = 4, 1235 }, 1236}; 1237 1238static const MemoryRegionOps openpic_msi_ops_be = { 1239 .read = openpic_msi_read, 1240 .write = openpic_msi_write, 1241 .endianness = DEVICE_BIG_ENDIAN, 1242 .impl = { 1243 .min_access_size = 4, 1244 .max_access_size = 4, 1245 }, 1246}; 1247 1248static const MemoryRegionOps openpic_summary_ops_be = { 1249 .read = openpic_summary_read, 1250 .write = openpic_summary_write, 1251 .endianness = DEVICE_BIG_ENDIAN, 1252 .impl = { 1253 .min_access_size = 4, 1254 .max_access_size = 4, 1255 }, 1256}; 1257 1258static void openpic_reset(DeviceState *d) 1259{ 1260 OpenPICState *opp = OPENPIC(d); 1261 int i; 1262 1263 opp->gcr = GCR_RESET; 1264 /* Initialise controller registers */ 1265 opp->frr = ((opp->nb_irqs - 1) << FRR_NIRQ_SHIFT) | 1266 ((opp->nb_cpus - 1) << FRR_NCPU_SHIFT) | 1267 (opp->vid << FRR_VID_SHIFT); 1268 1269 opp->pir = 0; 1270 opp->spve = -1 & opp->vector_mask; 1271 opp->tfrr = opp->tfrr_reset; 1272 /* Initialise IRQ sources */ 1273 for (i = 0; i < opp->max_irq; i++) { 1274 opp->src[i].ivpr = opp->ivpr_reset; 1275 switch (opp->src[i].type) { 1276 case IRQ_TYPE_NORMAL: 1277 opp->src[i].level = !!(opp->ivpr_reset & IVPR_SENSE_MASK); 1278 break; 1279 1280 case IRQ_TYPE_FSLINT: 1281 opp->src[i].ivpr |= IVPR_POLARITY_MASK; 1282 break; 1283 1284 case IRQ_TYPE_FSLSPECIAL: 1285 break; 1286 } 1287 1288 /* Mask all IPI interrupts for Freescale OpenPIC */ 1289 if ((opp->model == OPENPIC_MODEL_FSL_MPIC_20) || 1290 (opp->model == OPENPIC_MODEL_FSL_MPIC_42)) { 1291 if (i >= opp->irq_ipi0 && i < opp->irq_tim0) { 1292 write_IRQreg_idr(opp, i, 0); 1293 continue; 1294 } 1295 } 1296 1297 write_IRQreg_idr(opp, i, opp->idr_reset); 1298 } 1299 /* Initialise IRQ destinations */ 1300 for (i = 0; i < opp->nb_cpus; i++) { 1301 opp->dst[i].ctpr = 15; 1302 opp->dst[i].raised.next = -1; 1303 opp->dst[i].raised.priority = 0; 1304 bitmap_clear(opp->dst[i].raised.queue, 0, IRQQUEUE_SIZE_BITS); 1305 opp->dst[i].servicing.next = -1; 1306 opp->dst[i].servicing.priority = 0; 1307 bitmap_clear(opp->dst[i].servicing.queue, 0, IRQQUEUE_SIZE_BITS); 1308 } 1309 /* Initialise timers */ 1310 for (i = 0; i < OPENPIC_MAX_TMR; i++) { 1311 opp->timers[i].tccr = 0; 1312 opp->timers[i].tbcr = TBCR_CI; 1313 if (opp->timers[i].qemu_timer_active) { 1314 timer_del(opp->timers[i].qemu_timer); /* Inhibit timer */ 1315 opp->timers[i].qemu_timer_active = false; 1316 } 1317 } 1318 /* Go out of RESET state */ 1319 opp->gcr = 0; 1320} 1321 1322typedef struct MemReg { 1323 const char *name; 1324 MemoryRegionOps const *ops; 1325 hwaddr start_addr; 1326 ram_addr_t size; 1327} MemReg; 1328 1329static void fsl_common_init(OpenPICState *opp) 1330{ 1331 int i; 1332 int virq = OPENPIC_MAX_SRC; 1333 1334 opp->vid = VID_REVISION_1_2; 1335 opp->vir = VIR_GENERIC; 1336 opp->vector_mask = 0xFFFF; 1337 opp->tfrr_reset = 0; 1338 opp->ivpr_reset = IVPR_MASK_MASK; 1339 opp->idr_reset = 1 << 0; 1340 opp->max_irq = OPENPIC_MAX_IRQ; 1341 1342 opp->irq_ipi0 = virq; 1343 virq += OPENPIC_MAX_IPI; 1344 opp->irq_tim0 = virq; 1345 virq += OPENPIC_MAX_TMR; 1346 1347 assert(virq <= OPENPIC_MAX_IRQ); 1348 1349 opp->irq_msi = 224; 1350 1351 msi_nonbroken = true; 1352 for (i = 0; i < opp->fsl->max_ext; i++) { 1353 opp->src[i].level = false; 1354 } 1355 1356 /* Internal interrupts, including message and MSI */ 1357 for (i = 16; i < OPENPIC_MAX_SRC; i++) { 1358 opp->src[i].type = IRQ_TYPE_FSLINT; 1359 opp->src[i].level = true; 1360 } 1361 1362 /* timers and IPIs */ 1363 for (i = OPENPIC_MAX_SRC; i < virq; i++) { 1364 opp->src[i].type = IRQ_TYPE_FSLSPECIAL; 1365 opp->src[i].level = false; 1366 } 1367 1368 for (i = 0; i < OPENPIC_MAX_TMR; i++) { 1369 opp->timers[i].n_IRQ = opp->irq_tim0 + i; 1370 opp->timers[i].qemu_timer_active = false; 1371 opp->timers[i].qemu_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, 1372 &qemu_timer_cb, 1373 &opp->timers[i]); 1374 opp->timers[i].opp = opp; 1375 } 1376} 1377 1378static void map_list(OpenPICState *opp, const MemReg *list, int *count) 1379{ 1380 while (list->name) { 1381 assert(*count < ARRAY_SIZE(opp->sub_io_mem)); 1382 1383 memory_region_init_io(&opp->sub_io_mem[*count], OBJECT(opp), list->ops, 1384 opp, list->name, list->size); 1385 1386 memory_region_add_subregion(&opp->mem, list->start_addr, 1387 &opp->sub_io_mem[*count]); 1388 1389 (*count)++; 1390 list++; 1391 } 1392} 1393 1394static const VMStateDescription vmstate_openpic_irq_queue = { 1395 .name = "openpic_irq_queue", 1396 .version_id = 0, 1397 .minimum_version_id = 0, 1398 .fields = (VMStateField[]) { 1399 VMSTATE_BITMAP(queue, IRQQueue, 0, queue_size), 1400 VMSTATE_INT32(next, IRQQueue), 1401 VMSTATE_INT32(priority, IRQQueue), 1402 VMSTATE_END_OF_LIST() 1403 } 1404}; 1405 1406static const VMStateDescription vmstate_openpic_irqdest = { 1407 .name = "openpic_irqdest", 1408 .version_id = 0, 1409 .minimum_version_id = 0, 1410 .fields = (VMStateField[]) { 1411 VMSTATE_INT32(ctpr, IRQDest), 1412 VMSTATE_STRUCT(raised, IRQDest, 0, vmstate_openpic_irq_queue, 1413 IRQQueue), 1414 VMSTATE_STRUCT(servicing, IRQDest, 0, vmstate_openpic_irq_queue, 1415 IRQQueue), 1416 VMSTATE_UINT32_ARRAY(outputs_active, IRQDest, OPENPIC_OUTPUT_NB), 1417 VMSTATE_END_OF_LIST() 1418 } 1419}; 1420 1421static const VMStateDescription vmstate_openpic_irqsource = { 1422 .name = "openpic_irqsource", 1423 .version_id = 0, 1424 .minimum_version_id = 0, 1425 .fields = (VMStateField[]) { 1426 VMSTATE_UINT32(ivpr, IRQSource), 1427 VMSTATE_UINT32(idr, IRQSource), 1428 VMSTATE_UINT32(destmask, IRQSource), 1429 VMSTATE_INT32(last_cpu, IRQSource), 1430 VMSTATE_INT32(pending, IRQSource), 1431 VMSTATE_END_OF_LIST() 1432 } 1433}; 1434 1435static const VMStateDescription vmstate_openpic_timer = { 1436 .name = "openpic_timer", 1437 .version_id = 0, 1438 .minimum_version_id = 0, 1439 .fields = (VMStateField[]) { 1440 VMSTATE_UINT32(tccr, OpenPICTimer), 1441 VMSTATE_UINT32(tbcr, OpenPICTimer), 1442 VMSTATE_END_OF_LIST() 1443 } 1444}; 1445 1446static const VMStateDescription vmstate_openpic_msi = { 1447 .name = "openpic_msi", 1448 .version_id = 0, 1449 .minimum_version_id = 0, 1450 .fields = (VMStateField[]) { 1451 VMSTATE_UINT32(msir, OpenPICMSI), 1452 VMSTATE_END_OF_LIST() 1453 } 1454}; 1455 1456static int openpic_post_load(void *opaque, int version_id) 1457{ 1458 OpenPICState *opp = (OpenPICState *)opaque; 1459 int i; 1460 1461 /* Update internal ivpr and idr variables */ 1462 for (i = 0; i < opp->max_irq; i++) { 1463 write_IRQreg_idr(opp, i, opp->src[i].idr); 1464 write_IRQreg_ivpr(opp, i, opp->src[i].ivpr); 1465 } 1466 1467 return 0; 1468} 1469 1470static const VMStateDescription vmstate_openpic = { 1471 .name = "openpic", 1472 .version_id = 3, 1473 .minimum_version_id = 3, 1474 .post_load = openpic_post_load, 1475 .fields = (VMStateField[]) { 1476 VMSTATE_UINT32(gcr, OpenPICState), 1477 VMSTATE_UINT32(vir, OpenPICState), 1478 VMSTATE_UINT32(pir, OpenPICState), 1479 VMSTATE_UINT32(spve, OpenPICState), 1480 VMSTATE_UINT32(tfrr, OpenPICState), 1481 VMSTATE_UINT32(max_irq, OpenPICState), 1482 VMSTATE_STRUCT_VARRAY_UINT32(src, OpenPICState, max_irq, 0, 1483 vmstate_openpic_irqsource, IRQSource), 1484 VMSTATE_UINT32_EQUAL(nb_cpus, OpenPICState, NULL), 1485 VMSTATE_STRUCT_VARRAY_UINT32(dst, OpenPICState, nb_cpus, 0, 1486 vmstate_openpic_irqdest, IRQDest), 1487 VMSTATE_STRUCT_ARRAY(timers, OpenPICState, OPENPIC_MAX_TMR, 0, 1488 vmstate_openpic_timer, OpenPICTimer), 1489 VMSTATE_STRUCT_ARRAY(msi, OpenPICState, MAX_MSI, 0, 1490 vmstate_openpic_msi, OpenPICMSI), 1491 VMSTATE_UINT32(irq_ipi0, OpenPICState), 1492 VMSTATE_UINT32(irq_tim0, OpenPICState), 1493 VMSTATE_UINT32(irq_msi, OpenPICState), 1494 VMSTATE_END_OF_LIST() 1495 } 1496}; 1497 1498static void openpic_init(Object *obj) 1499{ 1500 OpenPICState *opp = OPENPIC(obj); 1501 1502 memory_region_init(&opp->mem, obj, "openpic", 0x40000); 1503} 1504 1505static void openpic_realize(DeviceState *dev, Error **errp) 1506{ 1507 SysBusDevice *d = SYS_BUS_DEVICE(dev); 1508 OpenPICState *opp = OPENPIC(dev); 1509 int i, j; 1510 int list_count = 0; 1511 static const MemReg list_le[] = { 1512 {"glb", &openpic_glb_ops_le, 1513 OPENPIC_GLB_REG_START, OPENPIC_GLB_REG_SIZE}, 1514 {"tmr", &openpic_tmr_ops_le, 1515 OPENPIC_TMR_REG_START, OPENPIC_TMR_REG_SIZE}, 1516 {"src", &openpic_src_ops_le, 1517 OPENPIC_SRC_REG_START, OPENPIC_SRC_REG_SIZE}, 1518 {"cpu", &openpic_cpu_ops_le, 1519 OPENPIC_CPU_REG_START, OPENPIC_CPU_REG_SIZE}, 1520 {NULL} 1521 }; 1522 static const MemReg list_be[] = { 1523 {"glb", &openpic_glb_ops_be, 1524 OPENPIC_GLB_REG_START, OPENPIC_GLB_REG_SIZE}, 1525 {"tmr", &openpic_tmr_ops_be, 1526 OPENPIC_TMR_REG_START, OPENPIC_TMR_REG_SIZE}, 1527 {"src", &openpic_src_ops_be, 1528 OPENPIC_SRC_REG_START, OPENPIC_SRC_REG_SIZE}, 1529 {"cpu", &openpic_cpu_ops_be, 1530 OPENPIC_CPU_REG_START, OPENPIC_CPU_REG_SIZE}, 1531 {NULL} 1532 }; 1533 static const MemReg list_fsl[] = { 1534 {"msi", &openpic_msi_ops_be, 1535 OPENPIC_MSI_REG_START, OPENPIC_MSI_REG_SIZE}, 1536 {"summary", &openpic_summary_ops_be, 1537 OPENPIC_SUMMARY_REG_START, OPENPIC_SUMMARY_REG_SIZE}, 1538 {NULL} 1539 }; 1540 1541 if (opp->nb_cpus > MAX_CPU) { 1542 error_setg(errp, QERR_PROPERTY_VALUE_OUT_OF_RANGE, 1543 TYPE_OPENPIC, "nb_cpus", (uint64_t)opp->nb_cpus, 1544 (uint64_t)0, (uint64_t)MAX_CPU); 1545 return; 1546 } 1547 1548 switch (opp->model) { 1549 case OPENPIC_MODEL_FSL_MPIC_20: 1550 default: 1551 opp->fsl = &fsl_mpic_20; 1552 opp->brr1 = 0x00400200; 1553 opp->flags |= OPENPIC_FLAG_IDR_CRIT; 1554 opp->nb_irqs = 80; 1555 opp->mpic_mode_mask = GCR_MODE_MIXED; 1556 1557 fsl_common_init(opp); 1558 map_list(opp, list_be, &list_count); 1559 map_list(opp, list_fsl, &list_count); 1560 1561 break; 1562 1563 case OPENPIC_MODEL_FSL_MPIC_42: 1564 opp->fsl = &fsl_mpic_42; 1565 opp->brr1 = 0x00400402; 1566 opp->flags |= OPENPIC_FLAG_ILR; 1567 opp->nb_irqs = 196; 1568 opp->mpic_mode_mask = GCR_MODE_PROXY; 1569 1570 fsl_common_init(opp); 1571 map_list(opp, list_be, &list_count); 1572 map_list(opp, list_fsl, &list_count); 1573 1574 break; 1575 1576 case OPENPIC_MODEL_KEYLARGO: 1577 opp->nb_irqs = KEYLARGO_MAX_EXT; 1578 opp->vid = VID_REVISION_1_2; 1579 opp->vir = VIR_GENERIC; 1580 opp->vector_mask = 0xFF; 1581 opp->tfrr_reset = 4160000; 1582 opp->ivpr_reset = IVPR_MASK_MASK | IVPR_MODE_MASK; 1583 opp->idr_reset = 0; 1584 opp->max_irq = KEYLARGO_MAX_IRQ; 1585 opp->irq_ipi0 = KEYLARGO_IPI_IRQ; 1586 opp->irq_tim0 = KEYLARGO_TMR_IRQ; 1587 opp->brr1 = -1; 1588 opp->mpic_mode_mask = GCR_MODE_MIXED; 1589 1590 if (opp->nb_cpus != 1) { 1591 error_setg(errp, "Only UP supported today"); 1592 return; 1593 } 1594 1595 map_list(opp, list_le, &list_count); 1596 break; 1597 } 1598 1599 for (i = 0; i < opp->nb_cpus; i++) { 1600 opp->dst[i].irqs = g_new0(qemu_irq, OPENPIC_OUTPUT_NB); 1601 for (j = 0; j < OPENPIC_OUTPUT_NB; j++) { 1602 sysbus_init_irq(d, &opp->dst[i].irqs[j]); 1603 } 1604 1605 opp->dst[i].raised.queue_size = IRQQUEUE_SIZE_BITS; 1606 opp->dst[i].raised.queue = bitmap_new(IRQQUEUE_SIZE_BITS); 1607 opp->dst[i].servicing.queue_size = IRQQUEUE_SIZE_BITS; 1608 opp->dst[i].servicing.queue = bitmap_new(IRQQUEUE_SIZE_BITS); 1609 } 1610 1611 sysbus_init_mmio(d, &opp->mem); 1612 qdev_init_gpio_in(dev, openpic_set_irq, opp->max_irq); 1613} 1614 1615static Property openpic_properties[] = { 1616 DEFINE_PROP_UINT32("model", OpenPICState, model, OPENPIC_MODEL_FSL_MPIC_20), 1617 DEFINE_PROP_UINT32("nb_cpus", OpenPICState, nb_cpus, 1), 1618 DEFINE_PROP_END_OF_LIST(), 1619}; 1620 1621static void openpic_class_init(ObjectClass *oc, void *data) 1622{ 1623 DeviceClass *dc = DEVICE_CLASS(oc); 1624 1625 dc->realize = openpic_realize; 1626 device_class_set_props(dc, openpic_properties); 1627 dc->reset = openpic_reset; 1628 dc->vmsd = &vmstate_openpic; 1629 set_bit(DEVICE_CATEGORY_MISC, dc->categories); 1630} 1631 1632static const TypeInfo openpic_info = { 1633 .name = TYPE_OPENPIC, 1634 .parent = TYPE_SYS_BUS_DEVICE, 1635 .instance_size = sizeof(OpenPICState), 1636 .instance_init = openpic_init, 1637 .class_init = openpic_class_init, 1638}; 1639 1640static void openpic_register_types(void) 1641{ 1642 type_register_static(&openpic_info); 1643} 1644 1645type_init(openpic_register_types)