hw/intc/xics.c

   1 /*
   2  * QEMU PowerPC pSeries Logical Partition (aka sPAPR) hardware System Emulator
   3  *
   4  * PAPR Virtualized Interrupt System, aka ICS/ICP aka xics
   5  *
   6  * Copyright (c) 2010,2011 David Gibson, IBM Corporation.
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a copy
   9  * of this software and associated documentation files (the "Software"), to deal
  10  * in the Software without restriction, including without limitation the rights
  11  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  12  * copies of the Software, and to permit persons to whom the Software is
  13  * furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice shall be included in
  16  * all copies or substantial portions of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  21  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  22  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  23  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  24  * THE SOFTWARE.
  25  *
  26  */
  27
  28 #include "qemu/osdep.h"
  29 #include "qapi/error.h"
  30 #include "qemu-common.h"
  31 #include "cpu.h"
  32 #include "hw/hw.h"
  33 #include "trace.h"
  34 #include "qemu/timer.h"
  35 #include "hw/ppc/xics.h"
  36 #include "qemu/error-report.h"
  37 #include "qapi/visitor.h"
  38 #include "monitor/monitor.h"
  39 #include "hw/intc/intc.h"
  40 #include "sysemu/kvm.h"
  41
  42 void icp_pic_print_info(ICPState *icp, Monitor *mon)
  43 {
  44     int cpu_index = icp->cs ? icp->cs->cpu_index : -1;
  45
  46     if (!icp->output) {
  47         return;
  48     }
  49
  50     if (kvm_irqchip_in_kernel()) {
  51         icp_synchronize_state(icp);
  52     }
  53
  54     monitor_printf(mon, "CPU %d XIRR=%08x (%p) PP=%02x MFRR=%02x\n",
  55                    cpu_index, icp->xirr, icp->xirr_owner,
  56                    icp->pending_priority, icp->mfrr);
  57 }
  58
  59 void ics_pic_print_info(ICSState *ics, Monitor *mon)
  60 {
  61     uint32_t i;
  62
  63     monitor_printf(mon, "ICS %4x..%4x %p\n",
  64                    ics->offset, ics->offset + ics->nr_irqs - 1, ics);
  65
  66     if (!ics->irqs) {
  67         return;
  68     }
  69
  70     if (kvm_irqchip_in_kernel()) {
  71         ics_synchronize_state(ics);
  72     }
  73
  74     for (i = 0; i < ics->nr_irqs; i++) {
  75         ICSIRQState *irq = ics->irqs + i;
  76
  77         if (!(irq->flags & XICS_FLAGS_IRQ_MASK)) {
  78             continue;
  79         }
  80         monitor_printf(mon, "  %4x %s %02x %02x\n",
  81                        ics->offset + i,
  82                        (irq->flags & XICS_FLAGS_IRQ_LSI) ?
  83                        "LSI" : "MSI",
  84                        irq->priority, irq->status);
  85     }
  86 }
  87
  88 /*
  89  * ICP: Presentation layer
  90  */
  91
  92 #define XISR_MASK  0x00ffffff
  93 #define CPPR_MASK  0xff000000
  94
  95 #define XISR(icp)   (((icp)->xirr) & XISR_MASK)
  96 #define CPPR(icp)   (((icp)->xirr) >> 24)
  97
  98 static void ics_reject(ICSState *ics, uint32_t nr)
  99 {
 100     ICSStateClass *k = ICS_BASE_GET_CLASS(ics);
 101
 102     if (k->reject) {
 103         k->reject(ics, nr);
 104     }
 105 }
 106
 107 void ics_resend(ICSState *ics)
 108 {
 109     ICSStateClass *k = ICS_BASE_GET_CLASS(ics);
 110
 111     if (k->resend) {
 112         k->resend(ics);
 113     }
 114 }
 115
 116 static void ics_eoi(ICSState *ics, int nr)
 117 {
 118     ICSStateClass *k = ICS_BASE_GET_CLASS(ics);
 119
 120     if (k->eoi) {
 121         k->eoi(ics, nr);
 122     }
 123 }
 124
 125 static void icp_check_ipi(ICPState *icp)
 126 {
 127     if (XISR(icp) && (icp->pending_priority <= icp->mfrr)) {
 128         return;
 129     }
 130
 131     trace_xics_icp_check_ipi(icp->cs->cpu_index, icp->mfrr);
 132
 133     if (XISR(icp) && icp->xirr_owner) {
 134         ics_reject(icp->xirr_owner, XISR(icp));
 135     }
 136
 137     icp->xirr = (icp->xirr & ~XISR_MASK) | XICS_IPI;
 138     icp->pending_priority = icp->mfrr;
 139     icp->xirr_owner = NULL;
 140     qemu_irq_raise(icp->output);
 141 }
 142
 143 void icp_resend(ICPState *icp)
 144 {
 145     XICSFabric *xi = icp->xics;
 146     XICSFabricClass *xic = XICS_FABRIC_GET_CLASS(xi);
 147
 148     if (icp->mfrr < CPPR(icp)) {
 149         icp_check_ipi(icp);
 150     }
 151
 152     xic->ics_resend(xi);
 153 }
 154
 155 void icp_set_cppr(ICPState *icp, uint8_t cppr)
 156 {
 157     uint8_t old_cppr;
 158     uint32_t old_xisr;
 159
 160     old_cppr = CPPR(icp);
 161     icp->xirr = (icp->xirr & ~CPPR_MASK) | (cppr << 24);
 162
 163     if (cppr < old_cppr) {
 164         if (XISR(icp) && (cppr <= icp->pending_priority)) {
 165             old_xisr = XISR(icp);
 166             icp->xirr &= ~XISR_MASK; /* Clear XISR */
 167             icp->pending_priority = 0xff;
 168             qemu_irq_lower(icp->output);
 169             if (icp->xirr_owner) {
 170                 ics_reject(icp->xirr_owner, old_xisr);
 171                 icp->xirr_owner = NULL;
 172             }
 173         }
 174     } else {
 175         if (!XISR(icp)) {
 176             icp_resend(icp);
 177         }
 178     }
 179 }
 180
 181 void icp_set_mfrr(ICPState *icp, uint8_t mfrr)
 182 {
 183     icp->mfrr = mfrr;
 184     if (mfrr < CPPR(icp)) {
 185         icp_check_ipi(icp);
 186     }
 187 }
 188
 189 uint32_t icp_accept(ICPState *icp)
 190 {
 191     uint32_t xirr = icp->xirr;
 192
 193     qemu_irq_lower(icp->output);
 194     icp->xirr = icp->pending_priority << 24;
 195     icp->pending_priority = 0xff;
 196     icp->xirr_owner = NULL;
 197
 198     trace_xics_icp_accept(xirr, icp->xirr);
 199
 200     return xirr;
 201 }
 202
 203 uint32_t icp_ipoll(ICPState *icp, uint32_t *mfrr)
 204 {
 205     if (mfrr) {
 206         *mfrr = icp->mfrr;
 207     }
 208     return icp->xirr;
 209 }
 210
 211 void icp_eoi(ICPState *icp, uint32_t xirr)
 212 {
 213     XICSFabric *xi = icp->xics;
 214     XICSFabricClass *xic = XICS_FABRIC_GET_CLASS(xi);
 215     ICSState *ics;
 216     uint32_t irq;
 217
 218     /* Send EOI -> ICS */
 219     icp->xirr = (icp->xirr & ~CPPR_MASK) | (xirr & CPPR_MASK);
 220     trace_xics_icp_eoi(icp->cs->cpu_index, xirr, icp->xirr);
 221     irq = xirr & XISR_MASK;
 222
 223     ics = xic->ics_get(xi, irq);
 224     if (ics) {
 225         ics_eoi(ics, irq);
 226     }
 227     if (!XISR(icp)) {
 228         icp_resend(icp);
 229     }
 230 }
 231
 232 static void icp_irq(ICSState *ics, int server, int nr, uint8_t priority)
 233 {
 234     ICPState *icp = xics_icp_get(ics->xics, server);
 235
 236     trace_xics_icp_irq(server, nr, priority);
 237
 238     if ((priority >= CPPR(icp))
 239         || (XISR(icp) && (icp->pending_priority <= priority))) {
 240         ics_reject(ics, nr);
 241     } else {
 242         if (XISR(icp) && icp->xirr_owner) {
 243             ics_reject(icp->xirr_owner, XISR(icp));
 244             icp->xirr_owner = NULL;
 245         }
 246         icp->xirr = (icp->xirr & ~XISR_MASK) | (nr & XISR_MASK);
 247         icp->xirr_owner = ics;
 248         icp->pending_priority = priority;
 249         trace_xics_icp_raise(icp->xirr, icp->pending_priority);
 250         qemu_irq_raise(icp->output);
 251     }
 252 }
 253
 254 static int icp_pre_save(void *opaque)
 255 {
 256     ICPState *icp = opaque;
 257
 258     if (kvm_irqchip_in_kernel()) {
 259         icp_get_kvm_state(icp);
 260     }
 261
 262     return 0;
 263 }
 264
 265 static int icp_post_load(void *opaque, int version_id)
 266 {
 267     ICPState *icp = opaque;
 268
 269     if (kvm_irqchip_in_kernel()) {
 270         return icp_set_kvm_state(icp);
 271     }
 272
 273     return 0;
 274 }
 275
 276 static const VMStateDescription vmstate_icp_server = {
 277     .name = "icp/server",
 278     .version_id = 1,
 279     .minimum_version_id = 1,
 280     .pre_save = icp_pre_save,
 281     .post_load = icp_post_load,
 282     .fields = (VMStateField[]) {
 283         /* Sanity check */
 284         VMSTATE_UINT32(xirr, ICPState),
 285         VMSTATE_UINT8(pending_priority, ICPState),
 286         VMSTATE_UINT8(mfrr, ICPState),
 287         VMSTATE_END_OF_LIST()
 288     },
 289 };
 290
 291 static void icp_reset_handler(void *dev)
 292 {
 293     ICPState *icp = ICP(dev);
 294
 295     icp->xirr = 0;
 296     icp->pending_priority = 0xff;
 297     icp->mfrr = 0xff;
 298
 299     /* Make all outputs are deasserted */
 300     qemu_set_irq(icp->output, 0);
 301
 302     if (kvm_irqchip_in_kernel()) {
 303         icp_set_kvm_state(ICP(dev));
 304     }
 305 }
 306
 307 static void icp_realize(DeviceState *dev, Error **errp)
 308 {
 309     ICPState *icp = ICP(dev);
 310     PowerPCCPU *cpu;
 311     CPUPPCState *env;
 312     Object *obj;
 313     Error *err = NULL;
 314
 315     obj = object_property_get_link(OBJECT(dev), ICP_PROP_XICS, &err);
 316     if (!obj) {
 317         error_propagate_prepend(errp, err,
 318                                 "required link '" ICP_PROP_XICS
 319                                 "' not found: ");
 320         return;
 321     }
 322
 323     icp->xics = XICS_FABRIC(obj);
 324
 325     obj = object_property_get_link(OBJECT(dev), ICP_PROP_CPU, &err);
 326     if (!obj) {
 327         error_propagate_prepend(errp, err,
 328                                 "required link '" ICP_PROP_CPU
 329                                 "' not found: ");
 330         return;
 331     }
 332
 333     cpu = POWERPC_CPU(obj);
 334     icp->cs = CPU(obj);
 335
 336     env = &cpu->env;
 337     switch (PPC_INPUT(env)) {
 338     case PPC_FLAGS_INPUT_POWER7:
 339         icp->output = env->irq_inputs[POWER7_INPUT_INT];
 340         break;
 341     case PPC_FLAGS_INPUT_POWER9: /* For SPAPR xics emulation */
 342         icp->output = env->irq_inputs[POWER9_INPUT_INT];
 343         break;
 344
 345     case PPC_FLAGS_INPUT_970:
 346         icp->output = env->irq_inputs[PPC970_INPUT_INT];
 347         break;
 348
 349     default:
 350         error_setg(errp, "XICS interrupt controller does not support this CPU bus model");
 351         return;
 352     }
 353
 354     if (kvm_irqchip_in_kernel()) {
 355         icp_kvm_realize(dev, &err);
 356         if (err) {
 357             error_propagate(errp, err);
 358             return;
 359         }
 360     }
 361
 362     qemu_register_reset(icp_reset_handler, dev);
 363     vmstate_register(NULL, icp->cs->cpu_index, &vmstate_icp_server, icp);
 364 }
 365
 366 static void icp_unrealize(DeviceState *dev, Error **errp)
 367 {
 368     ICPState *icp = ICP(dev);
 369
 370     vmstate_unregister(NULL, &vmstate_icp_server, icp);
 371     qemu_unregister_reset(icp_reset_handler, dev);
 372 }
 373
 374 static void icp_class_init(ObjectClass *klass, void *data)
 375 {
 376     DeviceClass *dc = DEVICE_CLASS(klass);
 377
 378     dc->realize = icp_realize;
 379     dc->unrealize = icp_unrealize;
 380 }
 381
 382 static const TypeInfo icp_info = {
 383     .name = TYPE_ICP,
 384     .parent = TYPE_DEVICE,
 385     .instance_size = sizeof(ICPState),
 386     .class_init = icp_class_init,
 387     .class_size = sizeof(ICPStateClass),
 388 };
 389
 390 Object *icp_create(Object *cpu, const char *type, XICSFabric *xi, Error **errp)
 391 {
 392     Error *local_err = NULL;
 393     Object *obj;
 394
 395     obj = object_new(type);
 396     object_property_add_child(cpu, type, obj, &error_abort);
 397     object_unref(obj);
 398     object_property_add_const_link(obj, ICP_PROP_XICS, OBJECT(xi),
 399                                    &error_abort);
 400     object_property_add_const_link(obj, ICP_PROP_CPU, cpu, &error_abort);
 401     object_property_set_bool(obj, true, "realized", &local_err);
 402     if (local_err) {
 403         object_unparent(obj);
 404         error_propagate(errp, local_err);
 405         obj = NULL;
 406     }
 407
 408     return obj;
 409 }
 410
 411 /*
 412  * ICS: Source layer
 413  */
 414 static void ics_simple_resend_msi(ICSState *ics, int srcno)
 415 {
 416     ICSIRQState *irq = ics->irqs + srcno;
 417
 418     /* FIXME: filter by server#? */
 419     if (irq->status & XICS_STATUS_REJECTED) {
 420         irq->status &= ~XICS_STATUS_REJECTED;
 421         if (irq->priority != 0xff) {
 422             icp_irq(ics, irq->server, srcno + ics->offset, irq->priority);
 423         }
 424     }
 425 }
 426
 427 static void ics_simple_resend_lsi(ICSState *ics, int srcno)
 428 {
 429     ICSIRQState *irq = ics->irqs + srcno;
 430
 431     if ((irq->priority != 0xff)
 432         && (irq->status & XICS_STATUS_ASSERTED)
 433         && !(irq->status & XICS_STATUS_SENT)) {
 434         irq->status |= XICS_STATUS_SENT;
 435         icp_irq(ics, irq->server, srcno + ics->offset, irq->priority);
 436     }
 437 }
 438
 439 static void ics_simple_set_irq_msi(ICSState *ics, int srcno, int val)
 440 {
 441     ICSIRQState *irq = ics->irqs + srcno;
 442
 443     trace_xics_ics_simple_set_irq_msi(srcno, srcno + ics->offset);
 444
 445     if (val) {
 446         if (irq->priority == 0xff) {
 447             irq->status |= XICS_STATUS_MASKED_PENDING;
 448             trace_xics_masked_pending();
 449         } else  {
 450             icp_irq(ics, irq->server, srcno + ics->offset, irq->priority);
 451         }
 452     }
 453 }
 454
 455 static void ics_simple_set_irq_lsi(ICSState *ics, int srcno, int val)
 456 {
 457     ICSIRQState *irq = ics->irqs + srcno;
 458
 459     trace_xics_ics_simple_set_irq_lsi(srcno, srcno + ics->offset);
 460     if (val) {
 461         irq->status |= XICS_STATUS_ASSERTED;
 462     } else {
 463         irq->status &= ~XICS_STATUS_ASSERTED;
 464     }
 465     ics_simple_resend_lsi(ics, srcno);
 466 }
 467
 468 void ics_simple_set_irq(void *opaque, int srcno, int val)
 469 {
 470     ICSState *ics = (ICSState *)opaque;
 471
 472     if (kvm_irqchip_in_kernel()) {
 473         ics_kvm_set_irq(ics, srcno, val);
 474         return;
 475     }
 476
 477     if (ics->irqs[srcno].flags & XICS_FLAGS_IRQ_LSI) {
 478         ics_simple_set_irq_lsi(ics, srcno, val);
 479     } else {
 480         ics_simple_set_irq_msi(ics, srcno, val);
 481     }
 482 }
 483
 484 static void ics_simple_write_xive_msi(ICSState *ics, int srcno)
 485 {
 486     ICSIRQState *irq = ics->irqs + srcno;
 487
 488     if (!(irq->status & XICS_STATUS_MASKED_PENDING)
 489         || (irq->priority == 0xff)) {
 490         return;
 491     }
 492
 493     irq->status &= ~XICS_STATUS_MASKED_PENDING;
 494     icp_irq(ics, irq->server, srcno + ics->offset, irq->priority);
 495 }
 496
 497 static void ics_simple_write_xive_lsi(ICSState *ics, int srcno)
 498 {
 499     ics_simple_resend_lsi(ics, srcno);
 500 }
 501
 502 void ics_simple_write_xive(ICSState *ics, int srcno, int server,
 503                            uint8_t priority, uint8_t saved_priority)
 504 {
 505     ICSIRQState *irq = ics->irqs + srcno;
 506
 507     irq->server = server;
 508     irq->priority = priority;
 509     irq->saved_priority = saved_priority;
 510
 511     trace_xics_ics_simple_write_xive(ics->offset + srcno, srcno, server,
 512                                      priority);
 513
 514     if (ics->irqs[srcno].flags & XICS_FLAGS_IRQ_LSI) {
 515         ics_simple_write_xive_lsi(ics, srcno);
 516     } else {
 517         ics_simple_write_xive_msi(ics, srcno);
 518     }
 519 }
 520
 521 static void ics_simple_reject(ICSState *ics, uint32_t nr)
 522 {
 523     ICSIRQState *irq = ics->irqs + nr - ics->offset;
 524
 525     trace_xics_ics_simple_reject(nr, nr - ics->offset);
 526     if (irq->flags & XICS_FLAGS_IRQ_MSI) {
 527         irq->status |= XICS_STATUS_REJECTED;
 528     } else if (irq->flags & XICS_FLAGS_IRQ_LSI) {
 529         irq->status &= ~XICS_STATUS_SENT;
 530     }
 531 }
 532
 533 static void ics_simple_resend(ICSState *ics)
 534 {
 535     int i;
 536
 537     for (i = 0; i < ics->nr_irqs; i++) {
 538         /* FIXME: filter by server#? */
 539         if (ics->irqs[i].flags & XICS_FLAGS_IRQ_LSI) {
 540             ics_simple_resend_lsi(ics, i);
 541         } else {
 542             ics_simple_resend_msi(ics, i);
 543         }
 544     }
 545 }
 546
 547 static void ics_simple_eoi(ICSState *ics, uint32_t nr)
 548 {
 549     int srcno = nr - ics->offset;
 550     ICSIRQState *irq = ics->irqs + srcno;
 551
 552     trace_xics_ics_simple_eoi(nr);
 553
 554     if (ics->irqs[srcno].flags & XICS_FLAGS_IRQ_LSI) {
 555         irq->status &= ~XICS_STATUS_SENT;
 556     }
 557 }
 558
 559 static void ics_simple_reset(DeviceState *dev)
 560 {
 561     ICSStateClass *icsc = ICS_BASE_GET_CLASS(dev);
 562
 563     icsc->parent_reset(dev);
 564
 565     if (kvm_irqchip_in_kernel()) {
 566         ics_set_kvm_state(ICS_BASE(dev));
 567     }
 568 }
 569
 570 static void ics_simple_reset_handler(void *dev)
 571 {
 572     ics_simple_reset(dev);
 573 }
 574
 575 static void ics_simple_realize(DeviceState *dev, Error **errp)
 576 {
 577     ICSState *ics = ICS_SIMPLE(dev);
 578     ICSStateClass *icsc = ICS_BASE_GET_CLASS(ics);
 579     Error *local_err = NULL;
 580
 581     icsc->parent_realize(dev, &local_err);
 582     if (local_err) {
 583         error_propagate(errp, local_err);
 584         return;
 585     }
 586
 587     qemu_register_reset(ics_simple_reset_handler, ics);
 588 }
 589
 590 static void ics_simple_class_init(ObjectClass *klass, void *data)
 591 {
 592     DeviceClass *dc = DEVICE_CLASS(klass);
 593     ICSStateClass *isc = ICS_BASE_CLASS(klass);
 594
 595     device_class_set_parent_realize(dc, ics_simple_realize,
 596                                     &isc->parent_realize);
 597     device_class_set_parent_reset(dc, ics_simple_reset,
 598                                   &isc->parent_reset);
 599
 600     isc->reject = ics_simple_reject;
 601     isc->resend = ics_simple_resend;
 602     isc->eoi = ics_simple_eoi;
 603 }
 604
 605 static const TypeInfo ics_simple_info = {
 606     .name = TYPE_ICS_SIMPLE,
 607     .parent = TYPE_ICS_BASE,
 608     .instance_size = sizeof(ICSState),
 609     .class_init = ics_simple_class_init,
 610     .class_size = sizeof(ICSStateClass),
 611 };
 612
 613 static void ics_reset_irq(ICSIRQState *irq)
 614 {
 615     irq->priority = 0xff;
 616     irq->saved_priority = 0xff;
 617 }
 618
 619 static void ics_base_reset(DeviceState *dev)
 620 {
 621     ICSState *ics = ICS_BASE(dev);
 622     int i;
 623     uint8_t flags[ics->nr_irqs];
 624
 625     for (i = 0; i < ics->nr_irqs; i++) {
 626         flags[i] = ics->irqs[i].flags;
 627     }
 628
 629     memset(ics->irqs, 0, sizeof(ICSIRQState) * ics->nr_irqs);
 630
 631     for (i = 0; i < ics->nr_irqs; i++) {
 632         ics_reset_irq(ics->irqs + i);
 633         ics->irqs[i].flags = flags[i];
 634     }
 635 }
 636
 637 static void ics_base_realize(DeviceState *dev, Error **errp)
 638 {
 639     ICSState *ics = ICS_BASE(dev);
 640     Object *obj;
 641     Error *err = NULL;
 642
 643     obj = object_property_get_link(OBJECT(dev), ICS_PROP_XICS, &err);
 644     if (!obj) {
 645         error_propagate_prepend(errp, err,
 646                                 "required link '" ICS_PROP_XICS
 647                                 "' not found: ");
 648         return;
 649     }
 650     ics->xics = XICS_FABRIC(obj);
 651
 652     if (!ics->nr_irqs) {
 653         error_setg(errp, "Number of interrupts needs to be greater 0");
 654         return;
 655     }
 656     ics->irqs = g_malloc0(ics->nr_irqs * sizeof(ICSIRQState));
 657 }
 658
 659 static void ics_base_instance_init(Object *obj)
 660 {
 661     ICSState *ics = ICS_BASE(obj);
 662
 663     ics->offset = XICS_IRQ_BASE;
 664 }
 665
 666 static int ics_base_pre_save(void *opaque)
 667 {
 668     ICSState *ics = opaque;
 669
 670     if (kvm_irqchip_in_kernel()) {
 671         ics_get_kvm_state(ics);
 672     }
 673
 674     return 0;
 675 }
 676
 677 static int ics_base_post_load(void *opaque, int version_id)
 678 {
 679     ICSState *ics = opaque;
 680
 681     if (kvm_irqchip_in_kernel()) {
 682         return ics_set_kvm_state(ics);
 683     }
 684
 685     return 0;
 686 }
 687
 688 static const VMStateDescription vmstate_ics_base_irq = {
 689     .name = "ics/irq",
 690     .version_id = 2,
 691     .minimum_version_id = 1,
 692     .fields = (VMStateField[]) {
 693         VMSTATE_UINT32(server, ICSIRQState),
 694         VMSTATE_UINT8(priority, ICSIRQState),
 695         VMSTATE_UINT8(saved_priority, ICSIRQState),
 696         VMSTATE_UINT8(status, ICSIRQState),
 697         VMSTATE_UINT8(flags, ICSIRQState),
 698         VMSTATE_END_OF_LIST()
 699     },
 700 };
 701
 702 static const VMStateDescription vmstate_ics_base = {
 703     .name = "ics",
 704     .version_id = 1,
 705     .minimum_version_id = 1,
 706     .pre_save = ics_base_pre_save,
 707     .post_load = ics_base_post_load,
 708     .fields = (VMStateField[]) {
 709         /* Sanity check */
 710         VMSTATE_UINT32_EQUAL(nr_irqs, ICSState, NULL),
 711
 712         VMSTATE_STRUCT_VARRAY_POINTER_UINT32(irqs, ICSState, nr_irqs,
 713                                              vmstate_ics_base_irq,
 714                                              ICSIRQState),
 715         VMSTATE_END_OF_LIST()
 716     },
 717 };
 718
 719 static Property ics_base_properties[] = {
 720     DEFINE_PROP_UINT32("nr-irqs", ICSState, nr_irqs, 0),
 721     DEFINE_PROP_END_OF_LIST(),
 722 };
 723
 724 static void ics_base_class_init(ObjectClass *klass, void *data)
 725 {
 726     DeviceClass *dc = DEVICE_CLASS(klass);
 727
 728     dc->realize = ics_base_realize;
 729     dc->props = ics_base_properties;
 730     dc->reset = ics_base_reset;
 731     dc->vmsd = &vmstate_ics_base;
 732 }
 733
 734 static const TypeInfo ics_base_info = {
 735     .name = TYPE_ICS_BASE,
 736     .parent = TYPE_DEVICE,
 737     .abstract = true,
 738     .instance_size = sizeof(ICSState),
 739     .instance_init = ics_base_instance_init,
 740     .class_init = ics_base_class_init,
 741     .class_size = sizeof(ICSStateClass),
 742 };
 743
 744 static const TypeInfo xics_fabric_info = {
 745     .name = TYPE_XICS_FABRIC,
 746     .parent = TYPE_INTERFACE,
 747     .class_size = sizeof(XICSFabricClass),
 748 };
 749
 750 /*
 751  * Exported functions
 752  */
 753 ICPState *xics_icp_get(XICSFabric *xi, int server)
 754 {
 755     XICSFabricClass *xic = XICS_FABRIC_GET_CLASS(xi);
 756
 757     return xic->icp_get(xi, server);
 758 }
 759
 760 void ics_set_irq_type(ICSState *ics, int srcno, bool lsi)
 761 {
 762     assert(!(ics->irqs[srcno].flags & XICS_FLAGS_IRQ_MASK));
 763
 764     ics->irqs[srcno].flags |=
 765         lsi ? XICS_FLAGS_IRQ_LSI : XICS_FLAGS_IRQ_MSI;
 766
 767     if (kvm_irqchip_in_kernel()) {
 768         ics_reset_irq(ics->irqs + srcno);
 769         ics_set_kvm_state_one(ics, srcno);
 770     }
 771 }
 772
 773 static void xics_register_types(void)
 774 {
 775     type_register_static(&ics_simple_info);
 776     type_register_static(&ics_base_info);
 777     type_register_static(&icp_info);
 778     type_register_static(&xics_fabric_info);
 779 }
 780
 781 type_init(xics_register_types)