hw/intc/arm_gic_kvm.c

   1 /*
   2  * ARM Generic Interrupt Controller using KVM in-kernel support
   3  *
   4  * Copyright (c) 2012 Linaro Limited
   5  * Written by Peter Maydell
   6  * Save/Restore logic added by Christoffer Dall.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation, either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along
  19  * with this program; if not, see <http://www.gnu.org/licenses/>.
  20  */
  21
  22 #include "qemu/osdep.h"
  23 #include "qapi/error.h"
  24 #include "qemu/module.h"
  25 #include "cpu.h"
  26 #include "hw/sysbus.h"
  27 #include "migration/blocker.h"
  28 #include "sysemu/kvm.h"
  29 #include "kvm_arm.h"
  30 #include "gic_internal.h"
  31 #include "vgic_common.h"
  32 #include "qom/object.h"
  33
  34 #define TYPE_KVM_ARM_GIC "kvm-arm-gic"
  35 typedef struct KVMARMGICClass KVMARMGICClass;
  36 #define KVM_ARM_GIC(obj) \
  37      OBJECT_CHECK(GICState, (obj), TYPE_KVM_ARM_GIC)
  38 #define KVM_ARM_GIC_CLASS(klass) \
  39      OBJECT_CLASS_CHECK(KVMARMGICClass, (klass), TYPE_KVM_ARM_GIC)
  40 #define KVM_ARM_GIC_GET_CLASS(obj) \
  41      OBJECT_GET_CLASS(KVMARMGICClass, (obj), TYPE_KVM_ARM_GIC)
  42
  43 struct KVMARMGICClass {
  44     ARMGICCommonClass parent_class;
  45     DeviceRealize parent_realize;
  46     void (*parent_reset)(DeviceState *dev);
  47 };
  48
  49 void kvm_arm_gic_set_irq(uint32_t num_irq, int irq, int level)
  50 {
  51     /* Meaning of the 'irq' parameter:
  52      *  [0..N-1] : external interrupts
  53      *  [N..N+31] : PPI (internal) interrupts for CPU 0
  54      *  [N+32..N+63] : PPI (internal interrupts for CPU 1
  55      *  ...
  56      * Convert this to the kernel's desired encoding, which
  57      * has separate fields in the irq number for type,
  58      * CPU number and interrupt number.
  59      */
  60     int irqtype, cpu;
  61
  62     if (irq < (num_irq - GIC_INTERNAL)) {
  63         /* External interrupt. The kernel numbers these like the GIC
  64          * hardware, with external interrupt IDs starting after the
  65          * internal ones.
  66          */
  67         irqtype = KVM_ARM_IRQ_TYPE_SPI;
  68         cpu = 0;
  69         irq += GIC_INTERNAL;
  70     } else {
  71         /* Internal interrupt: decode into (cpu, interrupt id) */
  72         irqtype = KVM_ARM_IRQ_TYPE_PPI;
  73         irq -= (num_irq - GIC_INTERNAL);
  74         cpu = irq / GIC_INTERNAL;
  75         irq %= GIC_INTERNAL;
  76     }
  77     kvm_arm_set_irq(cpu, irqtype, irq, !!level);
  78 }
  79
  80 static void kvm_arm_gicv2_set_irq(void *opaque, int irq, int level)
  81 {
  82     GICState *s = (GICState *)opaque;
  83
  84     kvm_arm_gic_set_irq(s->num_irq, irq, level);
  85 }
  86
  87 static bool kvm_arm_gic_can_save_restore(GICState *s)
  88 {
  89     return s->dev_fd >= 0;
  90 }
  91
  92 #define KVM_VGIC_ATTR(offset, cpu) \
  93     ((((uint64_t)(cpu) << KVM_DEV_ARM_VGIC_CPUID_SHIFT) & \
  94       KVM_DEV_ARM_VGIC_CPUID_MASK) | \
  95      (((uint64_t)(offset) << KVM_DEV_ARM_VGIC_OFFSET_SHIFT) & \
  96       KVM_DEV_ARM_VGIC_OFFSET_MASK))
  97
  98 static void kvm_gicd_access(GICState *s, int offset, int cpu,
  99                             uint32_t *val, bool write)
 100 {
 101     kvm_device_access(s->dev_fd, KVM_DEV_ARM_VGIC_GRP_DIST_REGS,
 102                       KVM_VGIC_ATTR(offset, cpu), val, write, &error_abort);
 103 }
 104
 105 static void kvm_gicc_access(GICState *s, int offset, int cpu,
 106                             uint32_t *val, bool write)
 107 {
 108     kvm_device_access(s->dev_fd, KVM_DEV_ARM_VGIC_GRP_CPU_REGS,
 109                       KVM_VGIC_ATTR(offset, cpu), val, write, &error_abort);
 110 }
 111
 112 #define for_each_irq_reg(_ctr, _max_irq, _field_width) \
 113     for (_ctr = 0; _ctr < ((_max_irq) / (32 / (_field_width))); _ctr++)
 114
 115 /*
 116  * Translate from the in-kernel field for an IRQ value to/from the qemu
 117  * representation.
 118  */
 119 typedef void (*vgic_translate_fn)(GICState *s, int irq, int cpu,
 120                                   uint32_t *field, bool to_kernel);
 121
 122 /* synthetic translate function used for clear/set registers to completely
 123  * clear a setting using a clear-register before setting the remaining bits
 124  * using a set-register */
 125 static void translate_clear(GICState *s, int irq, int cpu,
 126                             uint32_t *field, bool to_kernel)
 127 {
 128     if (to_kernel) {
 129         *field = ~0;
 130     } else {
 131         /* does not make sense: qemu model doesn't use set/clear regs */
 132         abort();
 133     }
 134 }
 135
 136 static void translate_group(GICState *s, int irq, int cpu,
 137                             uint32_t *field, bool to_kernel)
 138 {
 139     int cm = (irq < GIC_INTERNAL) ? (1 << cpu) : ALL_CPU_MASK;
 140
 141     if (to_kernel) {
 142         *field = GIC_DIST_TEST_GROUP(irq, cm);
 143     } else {
 144         if (*field & 1) {
 145             GIC_DIST_SET_GROUP(irq, cm);
 146         }
 147     }
 148 }
 149
 150 static void translate_enabled(GICState *s, int irq, int cpu,
 151                               uint32_t *field, bool to_kernel)
 152 {
 153     int cm = (irq < GIC_INTERNAL) ? (1 << cpu) : ALL_CPU_MASK;
 154
 155     if (to_kernel) {
 156         *field = GIC_DIST_TEST_ENABLED(irq, cm);
 157     } else {
 158         if (*field & 1) {
 159             GIC_DIST_SET_ENABLED(irq, cm);
 160         }
 161     }
 162 }
 163
 164 static void translate_pending(GICState *s, int irq, int cpu,
 165                               uint32_t *field, bool to_kernel)
 166 {
 167     int cm = (irq < GIC_INTERNAL) ? (1 << cpu) : ALL_CPU_MASK;
 168
 169     if (to_kernel) {
 170         *field = gic_test_pending(s, irq, cm);
 171     } else {
 172         if (*field & 1) {
 173             GIC_DIST_SET_PENDING(irq, cm);
 174             /* TODO: Capture is level-line is held high in the kernel */
 175         }
 176     }
 177 }
 178
 179 static void translate_active(GICState *s, int irq, int cpu,
 180                              uint32_t *field, bool to_kernel)
 181 {
 182     int cm = (irq < GIC_INTERNAL) ? (1 << cpu) : ALL_CPU_MASK;
 183
 184     if (to_kernel) {
 185         *field = GIC_DIST_TEST_ACTIVE(irq, cm);
 186     } else {
 187         if (*field & 1) {
 188             GIC_DIST_SET_ACTIVE(irq, cm);
 189         }
 190     }
 191 }
 192
 193 static void translate_trigger(GICState *s, int irq, int cpu,
 194                               uint32_t *field, bool to_kernel)
 195 {
 196     if (to_kernel) {
 197         *field = (GIC_DIST_TEST_EDGE_TRIGGER(irq)) ? 0x2 : 0x0;
 198     } else {
 199         if (*field & 0x2) {
 200             GIC_DIST_SET_EDGE_TRIGGER(irq);
 201         }
 202     }
 203 }
 204
 205 static void translate_priority(GICState *s, int irq, int cpu,
 206                                uint32_t *field, bool to_kernel)
 207 {
 208     if (to_kernel) {
 209         *field = GIC_DIST_GET_PRIORITY(irq, cpu) & 0xff;
 210     } else {
 211         gic_dist_set_priority(s, cpu, irq,
 212                               *field & 0xff, MEMTXATTRS_UNSPECIFIED);
 213     }
 214 }
 215
 216 static void translate_targets(GICState *s, int irq, int cpu,
 217                               uint32_t *field, bool to_kernel)
 218 {
 219     if (to_kernel) {
 220         *field = s->irq_target[irq] & 0xff;
 221     } else {
 222         s->irq_target[irq] = *field & 0xff;
 223     }
 224 }
 225
 226 static void translate_sgisource(GICState *s, int irq, int cpu,
 227                                 uint32_t *field, bool to_kernel)
 228 {
 229     if (to_kernel) {
 230         *field = s->sgi_pending[irq][cpu] & 0xff;
 231     } else {
 232         s->sgi_pending[irq][cpu] = *field & 0xff;
 233     }
 234 }
 235
 236 /* Read a register group from the kernel VGIC */
 237 static void kvm_dist_get(GICState *s, uint32_t offset, int width,
 238                          int maxirq, vgic_translate_fn translate_fn)
 239 {
 240     uint32_t reg;
 241     int i;
 242     int j;
 243     int irq;
 244     int cpu;
 245     int regsz = 32 / width; /* irqs per kernel register */
 246     uint32_t field;
 247
 248     for_each_irq_reg(i, maxirq, width) {
 249         irq = i * regsz;
 250         cpu = 0;
 251         while ((cpu < s->num_cpu && irq < GIC_INTERNAL) || cpu == 0) {
 252             kvm_gicd_access(s, offset, cpu, &reg, false);
 253             for (j = 0; j < regsz; j++) {
 254                 field = extract32(reg, j * width, width);
 255                 translate_fn(s, irq + j, cpu, &field, false);
 256             }
 257
 258             cpu++;
 259         }
 260         offset += 4;
 261     }
 262 }
 263
 264 /* Write a register group to the kernel VGIC */
 265 static void kvm_dist_put(GICState *s, uint32_t offset, int width,
 266                          int maxirq, vgic_translate_fn translate_fn)
 267 {
 268     uint32_t reg;
 269     int i;
 270     int j;
 271     int irq;
 272     int cpu;
 273     int regsz = 32 / width; /* irqs per kernel register */
 274     uint32_t field;
 275
 276     for_each_irq_reg(i, maxirq, width) {
 277         irq = i * regsz;
 278         cpu = 0;
 279         while ((cpu < s->num_cpu && irq < GIC_INTERNAL) || cpu == 0) {
 280             reg = 0;
 281             for (j = 0; j < regsz; j++) {
 282                 translate_fn(s, irq + j, cpu, &field, true);
 283                 reg = deposit32(reg, j * width, width, field);
 284             }
 285             kvm_gicd_access(s, offset, cpu, &reg, true);
 286
 287             cpu++;
 288         }
 289         offset += 4;
 290     }
 291 }
 292
 293 static void kvm_arm_gic_put(GICState *s)
 294 {
 295     uint32_t reg;
 296     int i;
 297     int cpu;
 298     int num_cpu;
 299     int num_irq;
 300
 301     /* Note: We do the restore in a slightly different order than the save
 302      * (where the order doesn't matter and is simply ordered according to the
 303      * register offset values */
 304
 305     /*****************************************************************
 306      * Distributor State
 307      */
 308
 309     /* s->ctlr -> GICD_CTLR */
 310     reg = s->ctlr;
 311     kvm_gicd_access(s, 0x0, 0, &reg, true);
 312
 313     /* Sanity checking on GICD_TYPER and s->num_irq, s->num_cpu */
 314     kvm_gicd_access(s, 0x4, 0, &reg, false);
 315     num_irq = ((reg & 0x1f) + 1) * 32;
 316     num_cpu = ((reg & 0xe0) >> 5) + 1;
 317
 318     if (num_irq < s->num_irq) {
 319             fprintf(stderr, "Restoring %u IRQs, but kernel supports max %d\n",
 320                     s->num_irq, num_irq);
 321             abort();
 322     } else if (num_cpu != s->num_cpu) {
 323             fprintf(stderr, "Restoring %u CPU interfaces, kernel only has %d\n",
 324                     s->num_cpu, num_cpu);
 325             /* Did we not create the VCPUs in the kernel yet? */
 326             abort();
 327     }
 328
 329     /* TODO: Consider checking compatibility with the IIDR ? */
 330
 331     /* irq_state[n].enabled -> GICD_ISENABLERn */
 332     kvm_dist_put(s, 0x180, 1, s->num_irq, translate_clear);
 333     kvm_dist_put(s, 0x100, 1, s->num_irq, translate_enabled);
 334
 335     /* irq_state[n].group -> GICD_IGROUPRn */
 336     kvm_dist_put(s, 0x80, 1, s->num_irq, translate_group);
 337
 338     /* s->irq_target[irq] -> GICD_ITARGETSRn
 339      * (restore targets before pending to ensure the pending state is set on
 340      * the appropriate CPU interfaces in the kernel) */
 341     kvm_dist_put(s, 0x800, 8, s->num_irq, translate_targets);
 342
 343     /* irq_state[n].trigger -> GICD_ICFGRn
 344      * (restore configuration registers before pending IRQs so we treat
 345      * level/edge correctly) */
 346     kvm_dist_put(s, 0xc00, 2, s->num_irq, translate_trigger);
 347
 348     /* irq_state[n].pending + irq_state[n].level -> GICD_ISPENDRn */
 349     kvm_dist_put(s, 0x280, 1, s->num_irq, translate_clear);
 350     kvm_dist_put(s, 0x200, 1, s->num_irq, translate_pending);
 351
 352     /* irq_state[n].active -> GICD_ISACTIVERn */
 353     kvm_dist_put(s, 0x380, 1, s->num_irq, translate_clear);
 354     kvm_dist_put(s, 0x300, 1, s->num_irq, translate_active);
 355
 356
 357     /* s->priorityX[irq] -> ICD_IPRIORITYRn */
 358     kvm_dist_put(s, 0x400, 8, s->num_irq, translate_priority);
 359
 360     /* s->sgi_pending -> ICD_CPENDSGIRn */
 361     kvm_dist_put(s, 0xf10, 8, GIC_NR_SGIS, translate_clear);
 362     kvm_dist_put(s, 0xf20, 8, GIC_NR_SGIS, translate_sgisource);
 363
 364
 365     /*****************************************************************
 366      * CPU Interface(s) State
 367      */
 368
 369     for (cpu = 0; cpu < s->num_cpu; cpu++) {
 370         /* s->cpu_ctlr[cpu] -> GICC_CTLR */
 371         reg = s->cpu_ctlr[cpu];
 372         kvm_gicc_access(s, 0x00, cpu, &reg, true);
 373
 374         /* s->priority_mask[cpu] -> GICC_PMR */
 375         reg = (s->priority_mask[cpu] & 0xff);
 376         kvm_gicc_access(s, 0x04, cpu, &reg, true);
 377
 378         /* s->bpr[cpu] -> GICC_BPR */
 379         reg = (s->bpr[cpu] & 0x7);
 380         kvm_gicc_access(s, 0x08, cpu, &reg, true);
 381
 382         /* s->abpr[cpu] -> GICC_ABPR */
 383         reg = (s->abpr[cpu] & 0x7);
 384         kvm_gicc_access(s, 0x1c, cpu, &reg, true);
 385
 386         /* s->apr[n][cpu] -> GICC_APRn */
 387         for (i = 0; i < 4; i++) {
 388             reg = s->apr[i][cpu];
 389             kvm_gicc_access(s, 0xd0 + i * 4, cpu, &reg, true);
 390         }
 391     }
 392 }
 393
 394 static void kvm_arm_gic_get(GICState *s)
 395 {
 396     uint32_t reg;
 397     int i;
 398     int cpu;
 399
 400     /*****************************************************************
 401      * Distributor State
 402      */
 403
 404     /* GICD_CTLR -> s->ctlr */
 405     kvm_gicd_access(s, 0x0, 0, &reg, false);
 406     s->ctlr = reg;
 407
 408     /* Sanity checking on GICD_TYPER -> s->num_irq, s->num_cpu */
 409     kvm_gicd_access(s, 0x4, 0, &reg, false);
 410     s->num_irq = ((reg & 0x1f) + 1) * 32;
 411     s->num_cpu = ((reg & 0xe0) >> 5) + 1;
 412
 413     if (s->num_irq > GIC_MAXIRQ) {
 414             fprintf(stderr, "Too many IRQs reported from the kernel: %d\n",
 415                     s->num_irq);
 416             abort();
 417     }
 418
 419     /* GICD_IIDR -> ? */
 420     kvm_gicd_access(s, 0x8, 0, &reg, false);
 421
 422     /* Clear all the IRQ settings */
 423     for (i = 0; i < s->num_irq; i++) {
 424         memset(&s->irq_state[i], 0, sizeof(s->irq_state[0]));
 425     }
 426
 427     /* GICD_IGROUPRn -> irq_state[n].group */
 428     kvm_dist_get(s, 0x80, 1, s->num_irq, translate_group);
 429
 430     /* GICD_ISENABLERn -> irq_state[n].enabled */
 431     kvm_dist_get(s, 0x100, 1, s->num_irq, translate_enabled);
 432
 433     /* GICD_ISPENDRn -> irq_state[n].pending + irq_state[n].level */
 434     kvm_dist_get(s, 0x200, 1, s->num_irq, translate_pending);
 435
 436     /* GICD_ISACTIVERn -> irq_state[n].active */
 437     kvm_dist_get(s, 0x300, 1, s->num_irq, translate_active);
 438
 439     /* GICD_ICFRn -> irq_state[n].trigger */
 440     kvm_dist_get(s, 0xc00, 2, s->num_irq, translate_trigger);
 441
 442     /* GICD_IPRIORITYRn -> s->priorityX[irq] */
 443     kvm_dist_get(s, 0x400, 8, s->num_irq, translate_priority);
 444
 445     /* GICD_ITARGETSRn -> s->irq_target[irq] */
 446     kvm_dist_get(s, 0x800, 8, s->num_irq, translate_targets);
 447
 448     /* GICD_CPENDSGIRn -> s->sgi_pending */
 449     kvm_dist_get(s, 0xf10, 8, GIC_NR_SGIS, translate_sgisource);
 450
 451
 452     /*****************************************************************
 453      * CPU Interface(s) State
 454      */
 455
 456     for (cpu = 0; cpu < s->num_cpu; cpu++) {
 457         /* GICC_CTLR -> s->cpu_ctlr[cpu] */
 458         kvm_gicc_access(s, 0x00, cpu, &reg, false);
 459         s->cpu_ctlr[cpu] = reg;
 460
 461         /* GICC_PMR -> s->priority_mask[cpu] */
 462         kvm_gicc_access(s, 0x04, cpu, &reg, false);
 463         s->priority_mask[cpu] = (reg & 0xff);
 464
 465         /* GICC_BPR -> s->bpr[cpu] */
 466         kvm_gicc_access(s, 0x08, cpu, &reg, false);
 467         s->bpr[cpu] = (reg & 0x7);
 468
 469         /* GICC_ABPR -> s->abpr[cpu] */
 470         kvm_gicc_access(s, 0x1c, cpu, &reg, false);
 471         s->abpr[cpu] = (reg & 0x7);
 472
 473         /* GICC_APRn -> s->apr[n][cpu] */
 474         for (i = 0; i < 4; i++) {
 475             kvm_gicc_access(s, 0xd0 + i * 4, cpu, &reg, false);
 476             s->apr[i][cpu] = reg;
 477         }
 478     }
 479 }
 480
 481 static void kvm_arm_gic_reset(DeviceState *dev)
 482 {
 483     GICState *s = ARM_GIC_COMMON(dev);
 484     KVMARMGICClass *kgc = KVM_ARM_GIC_GET_CLASS(s);
 485
 486     kgc->parent_reset(dev);
 487
 488     if (kvm_arm_gic_can_save_restore(s)) {
 489         kvm_arm_gic_put(s);
 490     }
 491 }
 492
 493 static void kvm_arm_gic_realize(DeviceState *dev, Error **errp)
 494 {
 495     int i;
 496     GICState *s = KVM_ARM_GIC(dev);
 497     KVMARMGICClass *kgc = KVM_ARM_GIC_GET_CLASS(s);
 498     Error *local_err = NULL;
 499     int ret;
 500
 501     kgc->parent_realize(dev, &local_err);
 502     if (local_err) {
 503         error_propagate(errp, local_err);
 504         return;
 505     }
 506
 507     if (s->security_extn) {
 508         error_setg(errp, "the in-kernel VGIC does not implement the "
 509                    "security extensions");
 510         return;
 511     }
 512
 513     if (s->virt_extn) {
 514         error_setg(errp, "the in-kernel VGIC does not implement the "
 515                    "virtualization extensions");
 516         return;
 517     }
 518
 519     if (!kvm_arm_gic_can_save_restore(s)) {
 520         error_setg(&s->migration_blocker, "This operating system kernel does "
 521                                           "not support vGICv2 migration");
 522         if (migrate_add_blocker(s->migration_blocker, errp) < 0) {
 523             error_free(s->migration_blocker);
 524             return;
 525         }
 526     }
 527
 528     gic_init_irqs_and_mmio(s, kvm_arm_gicv2_set_irq, NULL, NULL);
 529
 530     for (i = 0; i < s->num_irq - GIC_INTERNAL; i++) {
 531         qemu_irq irq = qdev_get_gpio_in(dev, i);
 532         kvm_irqchip_set_qemuirq_gsi(kvm_state, irq, i);
 533     }
 534
 535     /* Try to create the device via the device control API */
 536     s->dev_fd = -1;
 537     ret = kvm_create_device(kvm_state, KVM_DEV_TYPE_ARM_VGIC_V2, false);
 538     if (ret >= 0) {
 539         s->dev_fd = ret;
 540
 541         /* Newstyle API is used, we may have attributes */
 542         if (kvm_device_check_attr(s->dev_fd, KVM_DEV_ARM_VGIC_GRP_NR_IRQS, 0)) {
 543             uint32_t numirqs = s->num_irq;
 544             kvm_device_access(s->dev_fd, KVM_DEV_ARM_VGIC_GRP_NR_IRQS, 0,
 545                               &numirqs, true, &error_abort);
 546         }
 547         /* Tell the kernel to complete VGIC initialization now */
 548         if (kvm_device_check_attr(s->dev_fd, KVM_DEV_ARM_VGIC_GRP_CTRL,
 549                                   KVM_DEV_ARM_VGIC_CTRL_INIT)) {
 550             kvm_device_access(s->dev_fd, KVM_DEV_ARM_VGIC_GRP_CTRL,
 551                               KVM_DEV_ARM_VGIC_CTRL_INIT, NULL, true,
 552                               &error_abort);
 553         }
 554     } else if (kvm_check_extension(kvm_state, KVM_CAP_DEVICE_CTRL)) {
 555         error_setg_errno(errp, -ret, "error creating in-kernel VGIC");
 556         error_append_hint(errp,
 557                           "Perhaps the host CPU does not support GICv2?\n");
 558     } else if (ret != -ENODEV && ret != -ENOTSUP) {
 559         /*
 560          * Very ancient kernel without KVM_CAP_DEVICE_CTRL: assume that
 561          * ENODEV or ENOTSUP mean "can't create GICv2 with KVM_CREATE_DEVICE",
 562          * and that we will get a GICv2 via KVM_CREATE_IRQCHIP.
 563          */
 564         error_setg_errno(errp, -ret, "error creating in-kernel VGIC");
 565         return;
 566     }
 567
 568     /* Distributor */
 569     kvm_arm_register_device(&s->iomem,
 570                             (KVM_ARM_DEVICE_VGIC_V2 << KVM_ARM_DEVICE_ID_SHIFT)
 571                             | KVM_VGIC_V2_ADDR_TYPE_DIST,
 572                             KVM_DEV_ARM_VGIC_GRP_ADDR,
 573                             KVM_VGIC_V2_ADDR_TYPE_DIST,
 574                             s->dev_fd, 0);
 575     /* CPU interface for current core. Unlike arm_gic, we don't
 576      * provide the "interface for core #N" memory regions, because
 577      * cores with a VGIC don't have those.
 578      */
 579     kvm_arm_register_device(&s->cpuiomem[0],
 580                             (KVM_ARM_DEVICE_VGIC_V2 << KVM_ARM_DEVICE_ID_SHIFT)
 581                             | KVM_VGIC_V2_ADDR_TYPE_CPU,
 582                             KVM_DEV_ARM_VGIC_GRP_ADDR,
 583                             KVM_VGIC_V2_ADDR_TYPE_CPU,
 584                             s->dev_fd, 0);
 585
 586     if (kvm_has_gsi_routing()) {
 587         /* set up irq routing */
 588         for (i = 0; i < s->num_irq - GIC_INTERNAL; ++i) {
 589             kvm_irqchip_add_irq_route(kvm_state, i, 0, i);
 590         }
 591
 592         kvm_gsi_routing_allowed = true;
 593
 594         kvm_irqchip_commit_routes(kvm_state);
 595     }
 596 }
 597
 598 static void kvm_arm_gic_class_init(ObjectClass *klass, void *data)
 599 {
 600     DeviceClass *dc = DEVICE_CLASS(klass);
 601     ARMGICCommonClass *agcc = ARM_GIC_COMMON_CLASS(klass);
 602     KVMARMGICClass *kgc = KVM_ARM_GIC_CLASS(klass);
 603
 604     agcc->pre_save = kvm_arm_gic_get;
 605     agcc->post_load = kvm_arm_gic_put;
 606     device_class_set_parent_realize(dc, kvm_arm_gic_realize,
 607                                     &kgc->parent_realize);
 608     device_class_set_parent_reset(dc, kvm_arm_gic_reset, &kgc->parent_reset);
 609 }
 610
 611 static const TypeInfo kvm_arm_gic_info = {
 612     .name = TYPE_KVM_ARM_GIC,
 613     .parent = TYPE_ARM_GIC_COMMON,
 614     .instance_size = sizeof(GICState),
 615     .class_init = kvm_arm_gic_class_init,
 616     .class_size = sizeof(KVMARMGICClass),
 617 };
 618
 619 static void kvm_arm_gic_register_types(void)
 620 {
 621     type_register_static(&kvm_arm_gic_info);
 622 }
 623
 624 type_init(kvm_arm_gic_register_types)