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 "trace.h"
  31 #include "qemu/timer.h"
  32 #include "hw/ppc/xics.h"
  33 #include "hw/qdev-properties.h"
  34 #include "qemu/error-report.h"
  35 #include "qemu/module.h"
  36 #include "qapi/visitor.h"
  37 #include "migration/vmstate.h"
  38 #include "monitor/monitor.h"
  39 #include "hw/intc/intc.h"
  40 #include "hw/irq.h"
  41 #include "sysemu/kvm.h"
  42 #include "sysemu/reset.h"
  43
  44 void icp_pic_print_info(ICPState *icp, Monitor *mon)
  45 {
  46     int cpu_index;
  47
  48     /* Skip partially initialized vCPUs. This can happen on sPAPR when vCPUs
  49      * are hot plugged or unplugged.
  50      */
  51     if (!icp) {
  52         return;
  53     }
  54
  55     cpu_index = icp->cs ? icp->cs->cpu_index : -1;
  56
  57     if (!icp->output) {
  58         return;
  59     }
  60
  61     if (kvm_irqchip_in_kernel()) {
  62         icp_synchronize_state(icp);
  63     }
  64
  65     monitor_printf(mon, "CPU %d XIRR=%08x (%p) PP=%02x MFRR=%02x\n",
  66                    cpu_index, icp->xirr, icp->xirr_owner,
  67                    icp->pending_priority, icp->mfrr);
  68 }
  69
  70 void ics_pic_print_info(ICSState *ics, Monitor *mon)
  71 {
  72     uint32_t i;
  73
  74     monitor_printf(mon, "ICS %4x..%4x %p\n",
  75                    ics->offset, ics->offset + ics->nr_irqs - 1, ics);
  76
  77     if (!ics->irqs) {
  78         return;
  79     }
  80
  81     if (kvm_irqchip_in_kernel()) {
  82         ics_synchronize_state(ics);
  83     }
  84
  85     for (i = 0; i < ics->nr_irqs; i++) {
  86         ICSIRQState *irq = ics->irqs + i;
  87
  88         if (!(irq->flags & XICS_FLAGS_IRQ_MASK)) {
  89             continue;
  90         }
  91         monitor_printf(mon, "  %4x %s %02x %02x\n",
  92                        ics->offset + i,
  93                        (irq->flags & XICS_FLAGS_IRQ_LSI) ?
  94                        "LSI" : "MSI",
  95                        irq->priority, irq->status);
  96     }
  97 }
  98
  99 /*
 100  * ICP: Presentation layer
 101  */
 102
 103 #define XISR_MASK  0x00ffffff
 104 #define CPPR_MASK  0xff000000
 105
 106 #define XISR(icp)   (((icp)->xirr) & XISR_MASK)
 107 #define CPPR(icp)   (((icp)->xirr) >> 24)
 108
 109 static void ics_reject(ICSState *ics, uint32_t nr);
 110 static void ics_eoi(ICSState *ics, uint32_t nr);
 111
 112 static void icp_check_ipi(ICPState *icp)
 113 {
 114     if (XISR(icp) && (icp->pending_priority <= icp->mfrr)) {
 115         return;
 116     }
 117
 118     trace_xics_icp_check_ipi(icp->cs->cpu_index, icp->mfrr);
 119
 120     if (XISR(icp) && icp->xirr_owner) {
 121         ics_reject(icp->xirr_owner, XISR(icp));
 122     }
 123
 124     icp->xirr = (icp->xirr & ~XISR_MASK) | XICS_IPI;
 125     icp->pending_priority = icp->mfrr;
 126     icp->xirr_owner = NULL;
 127     qemu_irq_raise(icp->output);
 128 }
 129
 130 void icp_resend(ICPState *icp)
 131 {
 132     XICSFabric *xi = icp->xics;
 133     XICSFabricClass *xic = XICS_FABRIC_GET_CLASS(xi);
 134
 135     if (icp->mfrr < CPPR(icp)) {
 136         icp_check_ipi(icp);
 137     }
 138
 139     xic->ics_resend(xi);
 140 }
 141
 142 void icp_set_cppr(ICPState *icp, uint8_t cppr)
 143 {
 144     uint8_t old_cppr;
 145     uint32_t old_xisr;
 146
 147     old_cppr = CPPR(icp);
 148     icp->xirr = (icp->xirr & ~CPPR_MASK) | (cppr << 24);
 149
 150     if (cppr < old_cppr) {
 151         if (XISR(icp) && (cppr <= icp->pending_priority)) {
 152             old_xisr = XISR(icp);
 153             icp->xirr &= ~XISR_MASK; /* Clear XISR */
 154             icp->pending_priority = 0xff;
 155             qemu_irq_lower(icp->output);
 156             if (icp->xirr_owner) {
 157                 ics_reject(icp->xirr_owner, old_xisr);
 158                 icp->xirr_owner = NULL;
 159             }
 160         }
 161     } else {
 162         if (!XISR(icp)) {
 163             icp_resend(icp);
 164         }
 165     }
 166 }
 167
 168 void icp_set_mfrr(ICPState *icp, uint8_t mfrr)
 169 {
 170     icp->mfrr = mfrr;
 171     if (mfrr < CPPR(icp)) {
 172         icp_check_ipi(icp);
 173     }
 174 }
 175
 176 uint32_t icp_accept(ICPState *icp)
 177 {
 178     uint32_t xirr = icp->xirr;
 179
 180     qemu_irq_lower(icp->output);
 181     icp->xirr = icp->pending_priority << 24;
 182     icp->pending_priority = 0xff;
 183     icp->xirr_owner = NULL;
 184
 185     trace_xics_icp_accept(xirr, icp->xirr);
 186
 187     return xirr;
 188 }
 189
 190 uint32_t icp_ipoll(ICPState *icp, uint32_t *mfrr)
 191 {
 192     if (mfrr) {
 193         *mfrr = icp->mfrr;
 194     }
 195     return icp->xirr;
 196 }
 197
 198 void icp_eoi(ICPState *icp, uint32_t xirr)
 199 {
 200     XICSFabric *xi = icp->xics;
 201     XICSFabricClass *xic = XICS_FABRIC_GET_CLASS(xi);
 202     ICSState *ics;
 203     uint32_t irq;
 204
 205     /* Send EOI -> ICS */
 206     icp->xirr = (icp->xirr & ~CPPR_MASK) | (xirr & CPPR_MASK);
 207     trace_xics_icp_eoi(icp->cs->cpu_index, xirr, icp->xirr);
 208     irq = xirr & XISR_MASK;
 209
 210     ics = xic->ics_get(xi, irq);
 211     if (ics) {
 212         ics_eoi(ics, irq);
 213     }
 214     if (!XISR(icp)) {
 215         icp_resend(icp);
 216     }
 217 }
 218
 219 void icp_irq(ICSState *ics, int server, int nr, uint8_t priority)
 220 {
 221     ICPState *icp = xics_icp_get(ics->xics, server);
 222
 223     trace_xics_icp_irq(server, nr, priority);
 224
 225     if ((priority >= CPPR(icp))
 226         || (XISR(icp) && (icp->pending_priority <= priority))) {
 227         ics_reject(ics, nr);
 228     } else {
 229         if (XISR(icp) && icp->xirr_owner) {
 230             ics_reject(icp->xirr_owner, XISR(icp));
 231             icp->xirr_owner = NULL;
 232         }
 233         icp->xirr = (icp->xirr & ~XISR_MASK) | (nr & XISR_MASK);
 234         icp->xirr_owner = ics;
 235         icp->pending_priority = priority;
 236         trace_xics_icp_raise(icp->xirr, icp->pending_priority);
 237         qemu_irq_raise(icp->output);
 238     }
 239 }
 240
 241 static int icp_pre_save(void *opaque)
 242 {
 243     ICPState *icp = opaque;
 244
 245     if (kvm_irqchip_in_kernel()) {
 246         icp_get_kvm_state(icp);
 247     }
 248
 249     return 0;
 250 }
 251
 252 static int icp_post_load(void *opaque, int version_id)
 253 {
 254     ICPState *icp = opaque;
 255
 256     if (kvm_irqchip_in_kernel()) {
 257         Error *local_err = NULL;
 258         int ret;
 259
 260         ret = icp_set_kvm_state(icp, &local_err);
 261         if (ret < 0) {
 262             error_report_err(local_err);
 263             return ret;
 264         }
 265     }
 266
 267     return 0;
 268 }
 269
 270 static const VMStateDescription vmstate_icp_server = {
 271     .name = "icp/server",
 272     .version_id = 1,
 273     .minimum_version_id = 1,
 274     .pre_save = icp_pre_save,
 275     .post_load = icp_post_load,
 276     .fields = (VMStateField[]) {
 277         /* Sanity check */
 278         VMSTATE_UINT32(xirr, ICPState),
 279         VMSTATE_UINT8(pending_priority, ICPState),
 280         VMSTATE_UINT8(mfrr, ICPState),
 281         VMSTATE_END_OF_LIST()
 282     },
 283 };
 284
 285 void icp_reset(ICPState *icp)
 286 {
 287     icp->xirr = 0;
 288     icp->pending_priority = 0xff;
 289     icp->mfrr = 0xff;
 290
 291     if (kvm_irqchip_in_kernel()) {
 292         Error *local_err = NULL;
 293
 294         icp_set_kvm_state(icp, &local_err);
 295         if (local_err) {
 296             error_report_err(local_err);
 297         }
 298     }
 299 }
 300
 301 static void icp_realize(DeviceState *dev, Error **errp)
 302 {
 303     ICPState *icp = ICP(dev);
 304     CPUPPCState *env;
 305     Error *err = NULL;
 306
 307     assert(icp->xics);
 308     assert(icp->cs);
 309
 310     env = &POWERPC_CPU(icp->cs)->env;
 311     switch (PPC_INPUT(env)) {
 312     case PPC_FLAGS_INPUT_POWER7:
 313         icp->output = env->irq_inputs[POWER7_INPUT_INT];
 314         break;
 315     case PPC_FLAGS_INPUT_POWER9: /* For SPAPR xics emulation */
 316         icp->output = env->irq_inputs[POWER9_INPUT_INT];
 317         break;
 318
 319     case PPC_FLAGS_INPUT_970:
 320         icp->output = env->irq_inputs[PPC970_INPUT_INT];
 321         break;
 322
 323     default:
 324         error_setg(errp, "XICS interrupt controller does not support this CPU bus model");
 325         return;
 326     }
 327
 328     /* Connect the presenter to the VCPU (required for CPU hotplug) */
 329     if (kvm_irqchip_in_kernel()) {
 330         icp_kvm_realize(dev, &err);
 331         if (err) {
 332             error_propagate(errp, err);
 333             return;
 334         }
 335     }
 336
 337     vmstate_register(NULL, icp->cs->cpu_index, &vmstate_icp_server, icp);
 338 }
 339
 340 static void icp_unrealize(DeviceState *dev)
 341 {
 342     ICPState *icp = ICP(dev);
 343
 344     vmstate_unregister(NULL, &vmstate_icp_server, icp);
 345 }
 346
 347 static Property icp_properties[] = {
 348     DEFINE_PROP_LINK(ICP_PROP_XICS, ICPState, xics, TYPE_XICS_FABRIC,
 349                      XICSFabric *),
 350     DEFINE_PROP_LINK(ICP_PROP_CPU, ICPState, cs, TYPE_CPU, CPUState *),
 351     DEFINE_PROP_END_OF_LIST(),
 352 };
 353
 354 static void icp_class_init(ObjectClass *klass, void *data)
 355 {
 356     DeviceClass *dc = DEVICE_CLASS(klass);
 357
 358     dc->realize = icp_realize;
 359     dc->unrealize = icp_unrealize;
 360     device_class_set_props(dc, icp_properties);
 361     /*
 362      * Reason: part of XICS interrupt controller, needs to be wired up
 363      * by icp_create().
 364      */
 365     dc->user_creatable = false;
 366 }
 367
 368 static const TypeInfo icp_info = {
 369     .name = TYPE_ICP,
 370     .parent = TYPE_DEVICE,
 371     .instance_size = sizeof(ICPState),
 372     .class_init = icp_class_init,
 373     .class_size = sizeof(ICPStateClass),
 374 };
 375
 376 Object *icp_create(Object *cpu, const char *type, XICSFabric *xi, Error **errp)
 377 {
 378     Object *obj;
 379
 380     obj = object_new(type);
 381     object_property_add_child(cpu, type, obj);
 382     object_unref(obj);
 383     object_property_set_link(obj, ICP_PROP_XICS, OBJECT(xi), &error_abort);
 384     object_property_set_link(obj, ICP_PROP_CPU, cpu, &error_abort);
 385     if (!qdev_realize(DEVICE(obj), NULL, errp)) {
 386         object_unparent(obj);
 387         obj = NULL;
 388     }
 389
 390     return obj;
 391 }
 392
 393 void icp_destroy(ICPState *icp)
 394 {
 395     Object *obj = OBJECT(icp);
 396
 397     object_unparent(obj);
 398 }
 399
 400 /*
 401  * ICS: Source layer
 402  */
 403 static void ics_resend_msi(ICSState *ics, int srcno)
 404 {
 405     ICSIRQState *irq = ics->irqs + srcno;
 406
 407     /* FIXME: filter by server#? */
 408     if (irq->status & XICS_STATUS_REJECTED) {
 409         irq->status &= ~XICS_STATUS_REJECTED;
 410         if (irq->priority != 0xff) {
 411             icp_irq(ics, irq->server, srcno + ics->offset, irq->priority);
 412         }
 413     }
 414 }
 415
 416 static void ics_resend_lsi(ICSState *ics, int srcno)
 417 {
 418     ICSIRQState *irq = ics->irqs + srcno;
 419
 420     if ((irq->priority != 0xff)
 421         && (irq->status & XICS_STATUS_ASSERTED)
 422         && !(irq->status & XICS_STATUS_SENT)) {
 423         irq->status |= XICS_STATUS_SENT;
 424         icp_irq(ics, irq->server, srcno + ics->offset, irq->priority);
 425     }
 426 }
 427
 428 static void ics_set_irq_msi(ICSState *ics, int srcno, int val)
 429 {
 430     ICSIRQState *irq = ics->irqs + srcno;
 431
 432     trace_xics_ics_set_irq_msi(srcno, srcno + ics->offset);
 433
 434     if (val) {
 435         if (irq->priority == 0xff) {
 436             irq->status |= XICS_STATUS_MASKED_PENDING;
 437             trace_xics_masked_pending();
 438         } else  {
 439             icp_irq(ics, irq->server, srcno + ics->offset, irq->priority);
 440         }
 441     }
 442 }
 443
 444 static void ics_set_irq_lsi(ICSState *ics, int srcno, int val)
 445 {
 446     ICSIRQState *irq = ics->irqs + srcno;
 447
 448     trace_xics_ics_set_irq_lsi(srcno, srcno + ics->offset);
 449     if (val) {
 450         irq->status |= XICS_STATUS_ASSERTED;
 451     } else {
 452         irq->status &= ~XICS_STATUS_ASSERTED;
 453     }
 454     ics_resend_lsi(ics, srcno);
 455 }
 456
 457 void ics_set_irq(void *opaque, int srcno, int val)
 458 {
 459     ICSState *ics = (ICSState *)opaque;
 460
 461     if (kvm_irqchip_in_kernel()) {
 462         ics_kvm_set_irq(ics, srcno, val);
 463         return;
 464     }
 465
 466     if (ics->irqs[srcno].flags & XICS_FLAGS_IRQ_LSI) {
 467         ics_set_irq_lsi(ics, srcno, val);
 468     } else {
 469         ics_set_irq_msi(ics, srcno, val);
 470     }
 471 }
 472
 473 static void ics_write_xive_msi(ICSState *ics, int srcno)
 474 {
 475     ICSIRQState *irq = ics->irqs + srcno;
 476
 477     if (!(irq->status & XICS_STATUS_MASKED_PENDING)
 478         || (irq->priority == 0xff)) {
 479         return;
 480     }
 481
 482     irq->status &= ~XICS_STATUS_MASKED_PENDING;
 483     icp_irq(ics, irq->server, srcno + ics->offset, irq->priority);
 484 }
 485
 486 static void ics_write_xive_lsi(ICSState *ics, int srcno)
 487 {
 488     ics_resend_lsi(ics, srcno);
 489 }
 490
 491 void ics_write_xive(ICSState *ics, int srcno, int server,
 492                     uint8_t priority, uint8_t saved_priority)
 493 {
 494     ICSIRQState *irq = ics->irqs + srcno;
 495
 496     irq->server = server;
 497     irq->priority = priority;
 498     irq->saved_priority = saved_priority;
 499
 500     trace_xics_ics_write_xive(ics->offset + srcno, srcno, server, priority);
 501
 502     if (ics->irqs[srcno].flags & XICS_FLAGS_IRQ_LSI) {
 503         ics_write_xive_lsi(ics, srcno);
 504     } else {
 505         ics_write_xive_msi(ics, srcno);
 506     }
 507 }
 508
 509 static void ics_reject(ICSState *ics, uint32_t nr)
 510 {
 511     ICSStateClass *isc = ICS_GET_CLASS(ics);
 512     ICSIRQState *irq = ics->irqs + nr - ics->offset;
 513
 514     if (isc->reject) {
 515         isc->reject(ics, nr);
 516         return;
 517     }
 518
 519     trace_xics_ics_reject(nr, nr - ics->offset);
 520     if (irq->flags & XICS_FLAGS_IRQ_MSI) {
 521         irq->status |= XICS_STATUS_REJECTED;
 522     } else if (irq->flags & XICS_FLAGS_IRQ_LSI) {
 523         irq->status &= ~XICS_STATUS_SENT;
 524     }
 525 }
 526
 527 void ics_resend(ICSState *ics)
 528 {
 529     ICSStateClass *isc = ICS_GET_CLASS(ics);
 530     int i;
 531
 532     if (isc->resend) {
 533         isc->resend(ics);
 534         return;
 535     }
 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_resend_lsi(ics, i);
 541         } else {
 542             ics_resend_msi(ics, i);
 543         }
 544     }
 545 }
 546
 547 static void ics_eoi(ICSState *ics, uint32_t nr)
 548 {
 549     int srcno = nr - ics->offset;
 550     ICSIRQState *irq = ics->irqs + srcno;
 551
 552     trace_xics_ics_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_reset_irq(ICSIRQState *irq)
 560 {
 561     irq->priority = 0xff;
 562     irq->saved_priority = 0xff;
 563 }
 564
 565 static void ics_reset(DeviceState *dev)
 566 {
 567     ICSState *ics = ICS(dev);
 568     int i;
 569     uint8_t flags[ics->nr_irqs];
 570
 571     for (i = 0; i < ics->nr_irqs; i++) {
 572         flags[i] = ics->irqs[i].flags;
 573     }
 574
 575     memset(ics->irqs, 0, sizeof(ICSIRQState) * ics->nr_irqs);
 576
 577     for (i = 0; i < ics->nr_irqs; i++) {
 578         ics_reset_irq(ics->irqs + i);
 579         ics->irqs[i].flags = flags[i];
 580     }
 581
 582     if (kvm_irqchip_in_kernel()) {
 583         Error *local_err = NULL;
 584
 585         ics_set_kvm_state(ICS(dev), &local_err);
 586         if (local_err) {
 587             error_report_err(local_err);
 588         }
 589     }
 590 }
 591
 592 static void ics_reset_handler(void *dev)
 593 {
 594     ics_reset(dev);
 595 }
 596
 597 static void ics_realize(DeviceState *dev, Error **errp)
 598 {
 599     ICSState *ics = ICS(dev);
 600
 601     assert(ics->xics);
 602
 603     if (!ics->nr_irqs) {
 604         error_setg(errp, "Number of interrupts needs to be greater 0");
 605         return;
 606     }
 607     ics->irqs = g_new0(ICSIRQState, ics->nr_irqs);
 608
 609     qemu_register_reset(ics_reset_handler, ics);
 610 }
 611
 612 static void ics_instance_init(Object *obj)
 613 {
 614     ICSState *ics = ICS(obj);
 615
 616     ics->offset = XICS_IRQ_BASE;
 617 }
 618
 619 static int ics_pre_save(void *opaque)
 620 {
 621     ICSState *ics = opaque;
 622
 623     if (kvm_irqchip_in_kernel()) {
 624         ics_get_kvm_state(ics);
 625     }
 626
 627     return 0;
 628 }
 629
 630 static int ics_post_load(void *opaque, int version_id)
 631 {
 632     ICSState *ics = opaque;
 633
 634     if (kvm_irqchip_in_kernel()) {
 635         Error *local_err = NULL;
 636         int ret;
 637
 638         ret = ics_set_kvm_state(ics, &local_err);
 639         if (ret < 0) {
 640             error_report_err(local_err);
 641             return ret;
 642         }
 643     }
 644
 645     return 0;
 646 }
 647
 648 static const VMStateDescription vmstate_ics_irq = {
 649     .name = "ics/irq",
 650     .version_id = 2,
 651     .minimum_version_id = 1,
 652     .fields = (VMStateField[]) {
 653         VMSTATE_UINT32(server, ICSIRQState),
 654         VMSTATE_UINT8(priority, ICSIRQState),
 655         VMSTATE_UINT8(saved_priority, ICSIRQState),
 656         VMSTATE_UINT8(status, ICSIRQState),
 657         VMSTATE_UINT8(flags, ICSIRQState),
 658         VMSTATE_END_OF_LIST()
 659     },
 660 };
 661
 662 static const VMStateDescription vmstate_ics = {
 663     .name = "ics",
 664     .version_id = 1,
 665     .minimum_version_id = 1,
 666     .pre_save = ics_pre_save,
 667     .post_load = ics_post_load,
 668     .fields = (VMStateField[]) {
 669         /* Sanity check */
 670         VMSTATE_UINT32_EQUAL(nr_irqs, ICSState, NULL),
 671
 672         VMSTATE_STRUCT_VARRAY_POINTER_UINT32(irqs, ICSState, nr_irqs,
 673                                              vmstate_ics_irq,
 674                                              ICSIRQState),
 675         VMSTATE_END_OF_LIST()
 676     },
 677 };
 678
 679 static Property ics_properties[] = {
 680     DEFINE_PROP_UINT32("nr-irqs", ICSState, nr_irqs, 0),
 681     DEFINE_PROP_LINK(ICS_PROP_XICS, ICSState, xics, TYPE_XICS_FABRIC,
 682                      XICSFabric *),
 683     DEFINE_PROP_END_OF_LIST(),
 684 };
 685
 686 static void ics_class_init(ObjectClass *klass, void *data)
 687 {
 688     DeviceClass *dc = DEVICE_CLASS(klass);
 689
 690     dc->realize = ics_realize;
 691     device_class_set_props(dc, ics_properties);
 692     dc->reset = ics_reset;
 693     dc->vmsd = &vmstate_ics;
 694     /*
 695      * Reason: part of XICS interrupt controller, needs to be wired up,
 696      * e.g. by spapr_irq_init().
 697      */
 698     dc->user_creatable = false;
 699 }
 700
 701 static const TypeInfo ics_info = {
 702     .name = TYPE_ICS,
 703     .parent = TYPE_DEVICE,
 704     .instance_size = sizeof(ICSState),
 705     .instance_init = ics_instance_init,
 706     .class_init = ics_class_init,
 707     .class_size = sizeof(ICSStateClass),
 708 };
 709
 710 static const TypeInfo xics_fabric_info = {
 711     .name = TYPE_XICS_FABRIC,
 712     .parent = TYPE_INTERFACE,
 713     .class_size = sizeof(XICSFabricClass),
 714 };
 715
 716 /*
 717  * Exported functions
 718  */
 719 ICPState *xics_icp_get(XICSFabric *xi, int server)
 720 {
 721     XICSFabricClass *xic = XICS_FABRIC_GET_CLASS(xi);
 722
 723     return xic->icp_get(xi, server);
 724 }
 725
 726 void ics_set_irq_type(ICSState *ics, int srcno, bool lsi)
 727 {
 728     assert(!(ics->irqs[srcno].flags & XICS_FLAGS_IRQ_MASK));
 729
 730     ics->irqs[srcno].flags |=
 731         lsi ? XICS_FLAGS_IRQ_LSI : XICS_FLAGS_IRQ_MSI;
 732
 733     if (kvm_irqchip_in_kernel()) {
 734         Error *local_err = NULL;
 735
 736         ics_reset_irq(ics->irqs + srcno);
 737         ics_set_kvm_state_one(ics, srcno, &local_err);
 738         if (local_err) {
 739             error_report_err(local_err);
 740         }
 741     }
 742 }
 743
 744 static void xics_register_types(void)
 745 {
 746     type_register_static(&ics_info);
 747     type_register_static(&icp_info);
 748     type_register_static(&xics_fabric_info);
 749 }
 750
 751 type_init(xics_register_types)