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     PowerPCCPU *cpu;
 305     CPUPPCState *env;
 306     Error *err = NULL;
 307
 308     assert(icp->xics);
 309     assert(icp->cs);
 310
 311     cpu = POWERPC_CPU(icp->cs);
 312     env = &cpu->env;
 313     switch (PPC_INPUT(env)) {
 314     case PPC_FLAGS_INPUT_POWER7:
 315         icp->output = qdev_get_gpio_in(DEVICE(cpu), POWER7_INPUT_INT);
 316         break;
 317     case PPC_FLAGS_INPUT_POWER9: /* For SPAPR xics emulation */
 318         icp->output = qdev_get_gpio_in(DEVICE(cpu), POWER9_INPUT_INT);
 319         break;
 320
 321     case PPC_FLAGS_INPUT_970:
 322         icp->output = qdev_get_gpio_in(DEVICE(cpu), PPC970_INPUT_INT);
 323         break;
 324
 325     default:
 326         error_setg(errp, "XICS interrupt controller does not support this CPU bus model");
 327         return;
 328     }
 329
 330     /* Connect the presenter to the VCPU (required for CPU hotplug) */
 331     if (kvm_irqchip_in_kernel()) {
 332         icp_kvm_realize(dev, &err);
 333         if (err) {
 334             error_propagate(errp, err);
 335             return;
 336         }
 337     }
 338
 339     vmstate_register(NULL, icp->cs->cpu_index, &vmstate_icp_server, icp);
 340 }
 341
 342 static void icp_unrealize(DeviceState *dev)
 343 {
 344     ICPState *icp = ICP(dev);
 345
 346     vmstate_unregister(NULL, &vmstate_icp_server, icp);
 347 }
 348
 349 static Property icp_properties[] = {
 350     DEFINE_PROP_LINK(ICP_PROP_XICS, ICPState, xics, TYPE_XICS_FABRIC,
 351                      XICSFabric *),
 352     DEFINE_PROP_LINK(ICP_PROP_CPU, ICPState, cs, TYPE_CPU, CPUState *),
 353     DEFINE_PROP_END_OF_LIST(),
 354 };
 355
 356 static void icp_class_init(ObjectClass *klass, void *data)
 357 {
 358     DeviceClass *dc = DEVICE_CLASS(klass);
 359
 360     dc->realize = icp_realize;
 361     dc->unrealize = icp_unrealize;
 362     device_class_set_props(dc, icp_properties);
 363     /*
 364      * Reason: part of XICS interrupt controller, needs to be wired up
 365      * by icp_create().
 366      */
 367     dc->user_creatable = false;
 368 }
 369
 370 static const TypeInfo icp_info = {
 371     .name = TYPE_ICP,
 372     .parent = TYPE_DEVICE,
 373     .instance_size = sizeof(ICPState),
 374     .class_init = icp_class_init,
 375     .class_size = sizeof(ICPStateClass),
 376 };
 377
 378 Object *icp_create(Object *cpu, const char *type, XICSFabric *xi, Error **errp)
 379 {
 380     Object *obj;
 381
 382     obj = object_new(type);
 383     object_property_add_child(cpu, type, obj);
 384     object_unref(obj);
 385     object_property_set_link(obj, ICP_PROP_XICS, OBJECT(xi), &error_abort);
 386     object_property_set_link(obj, ICP_PROP_CPU, cpu, &error_abort);
 387     if (!qdev_realize(DEVICE(obj), NULL, errp)) {
 388         object_unparent(obj);
 389         obj = NULL;
 390     }
 391
 392     return obj;
 393 }
 394
 395 void icp_destroy(ICPState *icp)
 396 {
 397     Object *obj = OBJECT(icp);
 398
 399     object_unparent(obj);
 400 }
 401
 402 /*
 403  * ICS: Source layer
 404  */
 405 static void ics_resend_msi(ICSState *ics, int srcno)
 406 {
 407     ICSIRQState *irq = ics->irqs + srcno;
 408
 409     /* FIXME: filter by server#? */
 410     if (irq->status & XICS_STATUS_REJECTED) {
 411         irq->status &= ~XICS_STATUS_REJECTED;
 412         if (irq->priority != 0xff) {
 413             icp_irq(ics, irq->server, srcno + ics->offset, irq->priority);
 414         }
 415     }
 416 }
 417
 418 static void ics_resend_lsi(ICSState *ics, int srcno)
 419 {
 420     ICSIRQState *irq = ics->irqs + srcno;
 421
 422     if ((irq->priority != 0xff)
 423         && (irq->status & XICS_STATUS_ASSERTED)
 424         && !(irq->status & XICS_STATUS_SENT)) {
 425         irq->status |= XICS_STATUS_SENT;
 426         icp_irq(ics, irq->server, srcno + ics->offset, irq->priority);
 427     }
 428 }
 429
 430 static void ics_set_irq_msi(ICSState *ics, int srcno, int val)
 431 {
 432     ICSIRQState *irq = ics->irqs + srcno;
 433
 434     trace_xics_ics_set_irq_msi(srcno, srcno + ics->offset);
 435
 436     if (val) {
 437         if (irq->priority == 0xff) {
 438             irq->status |= XICS_STATUS_MASKED_PENDING;
 439             trace_xics_masked_pending();
 440         } else  {
 441             icp_irq(ics, irq->server, srcno + ics->offset, irq->priority);
 442         }
 443     }
 444 }
 445
 446 static void ics_set_irq_lsi(ICSState *ics, int srcno, int val)
 447 {
 448     ICSIRQState *irq = ics->irqs + srcno;
 449
 450     trace_xics_ics_set_irq_lsi(srcno, srcno + ics->offset);
 451     if (val) {
 452         irq->status |= XICS_STATUS_ASSERTED;
 453     } else {
 454         irq->status &= ~XICS_STATUS_ASSERTED;
 455     }
 456     ics_resend_lsi(ics, srcno);
 457 }
 458
 459 void ics_set_irq(void *opaque, int srcno, int val)
 460 {
 461     ICSState *ics = (ICSState *)opaque;
 462
 463     if (kvm_irqchip_in_kernel()) {
 464         ics_kvm_set_irq(ics, srcno, val);
 465         return;
 466     }
 467
 468     if (ics->irqs[srcno].flags & XICS_FLAGS_IRQ_LSI) {
 469         ics_set_irq_lsi(ics, srcno, val);
 470     } else {
 471         ics_set_irq_msi(ics, srcno, val);
 472     }
 473 }
 474
 475 static void ics_write_xive_msi(ICSState *ics, int srcno)
 476 {
 477     ICSIRQState *irq = ics->irqs + srcno;
 478
 479     if (!(irq->status & XICS_STATUS_MASKED_PENDING)
 480         || (irq->priority == 0xff)) {
 481         return;
 482     }
 483
 484     irq->status &= ~XICS_STATUS_MASKED_PENDING;
 485     icp_irq(ics, irq->server, srcno + ics->offset, irq->priority);
 486 }
 487
 488 static void ics_write_xive_lsi(ICSState *ics, int srcno)
 489 {
 490     ics_resend_lsi(ics, srcno);
 491 }
 492
 493 void ics_write_xive(ICSState *ics, int srcno, int server,
 494                     uint8_t priority, uint8_t saved_priority)
 495 {
 496     ICSIRQState *irq = ics->irqs + srcno;
 497
 498     irq->server = server;
 499     irq->priority = priority;
 500     irq->saved_priority = saved_priority;
 501
 502     trace_xics_ics_write_xive(ics->offset + srcno, srcno, server, priority);
 503
 504     if (ics->irqs[srcno].flags & XICS_FLAGS_IRQ_LSI) {
 505         ics_write_xive_lsi(ics, srcno);
 506     } else {
 507         ics_write_xive_msi(ics, srcno);
 508     }
 509 }
 510
 511 static void ics_reject(ICSState *ics, uint32_t nr)
 512 {
 513     ICSStateClass *isc = ICS_GET_CLASS(ics);
 514     ICSIRQState *irq = ics->irqs + nr - ics->offset;
 515
 516     if (isc->reject) {
 517         isc->reject(ics, nr);
 518         return;
 519     }
 520
 521     trace_xics_ics_reject(nr, nr - ics->offset);
 522     if (irq->flags & XICS_FLAGS_IRQ_MSI) {
 523         irq->status |= XICS_STATUS_REJECTED;
 524     } else if (irq->flags & XICS_FLAGS_IRQ_LSI) {
 525         irq->status &= ~XICS_STATUS_SENT;
 526     }
 527 }
 528
 529 void ics_resend(ICSState *ics)
 530 {
 531     ICSStateClass *isc = ICS_GET_CLASS(ics);
 532     int i;
 533
 534     if (isc->resend) {
 535         isc->resend(ics);
 536         return;
 537     }
 538
 539     for (i = 0; i < ics->nr_irqs; i++) {
 540         /* FIXME: filter by server#? */
 541         if (ics->irqs[i].flags & XICS_FLAGS_IRQ_LSI) {
 542             ics_resend_lsi(ics, i);
 543         } else {
 544             ics_resend_msi(ics, i);
 545         }
 546     }
 547 }
 548
 549 static void ics_eoi(ICSState *ics, uint32_t nr)
 550 {
 551     int srcno = nr - ics->offset;
 552     ICSIRQState *irq = ics->irqs + srcno;
 553
 554     trace_xics_ics_eoi(nr);
 555
 556     if (ics->irqs[srcno].flags & XICS_FLAGS_IRQ_LSI) {
 557         irq->status &= ~XICS_STATUS_SENT;
 558     }
 559 }
 560
 561 static void ics_reset_irq(ICSIRQState *irq)
 562 {
 563     irq->priority = 0xff;
 564     irq->saved_priority = 0xff;
 565 }
 566
 567 static void ics_reset_hold(Object *obj)
 568 {
 569     ICSState *ics = ICS(obj);
 570     g_autofree uint8_t *flags = g_malloc(ics->nr_irqs);
 571     int i;
 572
 573     for (i = 0; i < ics->nr_irqs; i++) {
 574         flags[i] = ics->irqs[i].flags;
 575     }
 576
 577     memset(ics->irqs, 0, sizeof(ICSIRQState) * ics->nr_irqs);
 578
 579     for (i = 0; i < ics->nr_irqs; i++) {
 580         ics_reset_irq(ics->irqs + i);
 581         ics->irqs[i].flags = flags[i];
 582     }
 583
 584     if (kvm_irqchip_in_kernel()) {
 585         Error *local_err = NULL;
 586
 587         ics_set_kvm_state(ics, &local_err);
 588         if (local_err) {
 589             error_report_err(local_err);
 590         }
 591     }
 592 }
 593
 594 static void ics_reset_handler(void *dev)
 595 {
 596     device_cold_reset(dev);
 597 }
 598
 599 static void ics_realize(DeviceState *dev, Error **errp)
 600 {
 601     ICSState *ics = ICS(dev);
 602
 603     assert(ics->xics);
 604
 605     if (!ics->nr_irqs) {
 606         error_setg(errp, "Number of interrupts needs to be greater 0");
 607         return;
 608     }
 609     ics->irqs = g_new0(ICSIRQState, ics->nr_irqs);
 610
 611     qemu_register_reset(ics_reset_handler, ics);
 612 }
 613
 614 static void ics_instance_init(Object *obj)
 615 {
 616     ICSState *ics = ICS(obj);
 617
 618     ics->offset = XICS_IRQ_BASE;
 619 }
 620
 621 static int ics_pre_save(void *opaque)
 622 {
 623     ICSState *ics = opaque;
 624
 625     if (kvm_irqchip_in_kernel()) {
 626         ics_get_kvm_state(ics);
 627     }
 628
 629     return 0;
 630 }
 631
 632 static int ics_post_load(void *opaque, int version_id)
 633 {
 634     ICSState *ics = opaque;
 635
 636     if (kvm_irqchip_in_kernel()) {
 637         Error *local_err = NULL;
 638         int ret;
 639
 640         ret = ics_set_kvm_state(ics, &local_err);
 641         if (ret < 0) {
 642             error_report_err(local_err);
 643             return ret;
 644         }
 645     }
 646
 647     return 0;
 648 }
 649
 650 static const VMStateDescription vmstate_ics_irq = {
 651     .name = "ics/irq",
 652     .version_id = 2,
 653     .minimum_version_id = 1,
 654     .fields = (VMStateField[]) {
 655         VMSTATE_UINT32(server, ICSIRQState),
 656         VMSTATE_UINT8(priority, ICSIRQState),
 657         VMSTATE_UINT8(saved_priority, ICSIRQState),
 658         VMSTATE_UINT8(status, ICSIRQState),
 659         VMSTATE_UINT8(flags, ICSIRQState),
 660         VMSTATE_END_OF_LIST()
 661     },
 662 };
 663
 664 static const VMStateDescription vmstate_ics = {
 665     .name = "ics",
 666     .version_id = 1,
 667     .minimum_version_id = 1,
 668     .pre_save = ics_pre_save,
 669     .post_load = ics_post_load,
 670     .fields = (VMStateField[]) {
 671         /* Sanity check */
 672         VMSTATE_UINT32_EQUAL(nr_irqs, ICSState, NULL),
 673
 674         VMSTATE_STRUCT_VARRAY_POINTER_UINT32(irqs, ICSState, nr_irqs,
 675                                              vmstate_ics_irq,
 676                                              ICSIRQState),
 677         VMSTATE_END_OF_LIST()
 678     },
 679 };
 680
 681 static Property ics_properties[] = {
 682     DEFINE_PROP_UINT32("nr-irqs", ICSState, nr_irqs, 0),
 683     DEFINE_PROP_LINK(ICS_PROP_XICS, ICSState, xics, TYPE_XICS_FABRIC,
 684                      XICSFabric *),
 685     DEFINE_PROP_END_OF_LIST(),
 686 };
 687
 688 static void ics_class_init(ObjectClass *klass, void *data)
 689 {
 690     DeviceClass *dc = DEVICE_CLASS(klass);
 691     ResettableClass *rc = RESETTABLE_CLASS(klass);
 692
 693     dc->realize = ics_realize;
 694     device_class_set_props(dc, ics_properties);
 695     dc->vmsd = &vmstate_ics;
 696     /*
 697      * Reason: part of XICS interrupt controller, needs to be wired up,
 698      * e.g. by spapr_irq_init().
 699      */
 700     dc->user_creatable = false;
 701     rc->phases.hold = ics_reset_hold;
 702 }
 703
 704 static const TypeInfo ics_info = {
 705     .name = TYPE_ICS,
 706     .parent = TYPE_DEVICE,
 707     .instance_size = sizeof(ICSState),
 708     .instance_init = ics_instance_init,
 709     .class_init = ics_class_init,
 710     .class_size = sizeof(ICSStateClass),
 711 };
 712
 713 static const TypeInfo xics_fabric_info = {
 714     .name = TYPE_XICS_FABRIC,
 715     .parent = TYPE_INTERFACE,
 716     .class_size = sizeof(XICSFabricClass),
 717 };
 718
 719 /*
 720  * Exported functions
 721  */
 722 ICPState *xics_icp_get(XICSFabric *xi, int server)
 723 {
 724     XICSFabricClass *xic = XICS_FABRIC_GET_CLASS(xi);
 725
 726     return xic->icp_get(xi, server);
 727 }
 728
 729 void ics_set_irq_type(ICSState *ics, int srcno, bool lsi)
 730 {
 731     assert(!(ics->irqs[srcno].flags & XICS_FLAGS_IRQ_MASK));
 732
 733     ics->irqs[srcno].flags |=
 734         lsi ? XICS_FLAGS_IRQ_LSI : XICS_FLAGS_IRQ_MSI;
 735
 736     if (kvm_irqchip_in_kernel()) {
 737         Error *local_err = NULL;
 738
 739         ics_reset_irq(ics->irqs + srcno);
 740         ics_set_kvm_state_one(ics, srcno, &local_err);
 741         if (local_err) {
 742             error_report_err(local_err);
 743         }
 744     }
 745 }
 746
 747 static void xics_register_types(void)
 748 {
 749     type_register_static(&ics_info);
 750     type_register_static(&icp_info);
 751     type_register_static(&xics_fabric_info);
 752 }
 753
 754 type_init(xics_register_types)