hw/s390x/sclp.c

   1 /*
   2  * SCLP Support
   3  *
   4  * Copyright IBM, Corp. 2012
   5  *
   6  * Authors:
   7  *  Christian Borntraeger <borntraeger@de.ibm.com>
   8  *  Heinz Graalfs <graalfs@linux.vnet.ibm.com>
   9  *
  10  * This work is licensed under the terms of the GNU GPL, version 2 or (at your
  11  * option) any later version.  See the COPYING file in the top-level directory.
  12  *
  13  */
  14
  15 #include "cpu.h"
  16 #include "sysemu/kvm.h"
  17 #include "exec/memory.h"
  18 #include "sysemu/sysemu.h"
  19 #include "exec/address-spaces.h"
  20 #include "hw/boards.h"
  21 #include "hw/s390x/sclp.h"
  22 #include "hw/s390x/event-facility.h"
  23 #include "hw/s390x/s390-pci-bus.h"
  24
  25 static inline SCLPDevice *get_sclp_device(void)
  26 {
  27     return SCLP(object_resolve_path_type("", TYPE_SCLP, NULL));
  28 }
  29
  30 /* Provide information about the configuration, CPUs and storage */
  31 static void read_SCP_info(SCLPDevice *sclp, SCCB *sccb)
  32 {
  33     ReadInfo *read_info = (ReadInfo *) sccb;
  34     MachineState *machine = MACHINE(qdev_get_machine());
  35     sclpMemoryHotplugDev *mhd = get_sclp_memory_hotplug_dev();
  36     CPUState *cpu;
  37     int cpu_count = 0;
  38     int i = 0;
  39     int rnsize, rnmax;
  40     int slots = MIN(machine->ram_slots, s390_get_memslot_count(kvm_state));
  41
  42     CPU_FOREACH(cpu) {
  43         cpu_count++;
  44     }
  45
  46     /* CPU information */
  47     read_info->entries_cpu = cpu_to_be16(cpu_count);
  48     read_info->offset_cpu = cpu_to_be16(offsetof(ReadInfo, entries));
  49     read_info->highest_cpu = cpu_to_be16(max_cpus);
  50
  51     for (i = 0; i < cpu_count; i++) {
  52         read_info->entries[i].address = i;
  53         read_info->entries[i].type = 0;
  54     }
  55
  56     read_info->facilities = cpu_to_be64(SCLP_HAS_CPU_INFO |
  57                                         SCLP_HAS_PCI_RECONFIG);
  58
  59     /* Memory Hotplug is only supported for the ccw machine type */
  60     if (mhd) {
  61         mhd->standby_subregion_size = MEM_SECTION_SIZE;
  62         /* Deduct the memory slot already used for core */
  63         if (slots > 0) {
  64             while ((mhd->standby_subregion_size * (slots - 1)
  65                     < mhd->standby_mem_size)) {
  66                 mhd->standby_subregion_size = mhd->standby_subregion_size << 1;
  67             }
  68         }
  69         /*
  70          * Initialize mapping of guest standby memory sections indicating which
  71          * are and are not online. Assume all standby memory begins offline.
  72          */
  73         if (mhd->standby_state_map == 0) {
  74             if (mhd->standby_mem_size % mhd->standby_subregion_size) {
  75                 mhd->standby_state_map = g_malloc0((mhd->standby_mem_size /
  76                                              mhd->standby_subregion_size + 1) *
  77                                              (mhd->standby_subregion_size /
  78                                              MEM_SECTION_SIZE));
  79             } else {
  80                 mhd->standby_state_map = g_malloc0(mhd->standby_mem_size /
  81                                                    MEM_SECTION_SIZE);
  82             }
  83         }
  84         mhd->padded_ram_size = ram_size + mhd->pad_size;
  85         mhd->rzm = 1 << mhd->increment_size;
  86
  87         read_info->facilities |= cpu_to_be64(SCLP_FC_ASSIGN_ATTACH_READ_STOR);
  88     }
  89
  90     rnsize = 1 << (sclp->increment_size - 20);
  91     if (rnsize <= 128) {
  92         read_info->rnsize = rnsize;
  93     } else {
  94         read_info->rnsize = 0;
  95         read_info->rnsize2 = cpu_to_be32(rnsize);
  96     }
  97
  98     rnmax = machine->maxram_size >> sclp->increment_size;
  99     if (rnmax < 0x10000) {
 100         read_info->rnmax = cpu_to_be16(rnmax);
 101     } else {
 102         read_info->rnmax = cpu_to_be16(0);
 103         read_info->rnmax2 = cpu_to_be64(rnmax);
 104     }
 105
 106     sccb->h.response_code = cpu_to_be16(SCLP_RC_NORMAL_READ_COMPLETION);
 107 }
 108
 109 static void read_storage_element0_info(SCLPDevice *sclp, SCCB *sccb)
 110 {
 111     int i, assigned;
 112     int subincrement_id = SCLP_STARTING_SUBINCREMENT_ID;
 113     ReadStorageElementInfo *storage_info = (ReadStorageElementInfo *) sccb;
 114     sclpMemoryHotplugDev *mhd = get_sclp_memory_hotplug_dev();
 115
 116     if (!mhd) {
 117         sccb->h.response_code = cpu_to_be16(SCLP_RC_INVALID_SCLP_COMMAND);
 118         return;
 119     }
 120
 121     if ((ram_size >> mhd->increment_size) >= 0x10000) {
 122         sccb->h.response_code = cpu_to_be16(SCLP_RC_SCCB_BOUNDARY_VIOLATION);
 123         return;
 124     }
 125
 126     /* Return information regarding core memory */
 127     storage_info->max_id = cpu_to_be16(mhd->standby_mem_size ? 1 : 0);
 128     assigned = ram_size >> mhd->increment_size;
 129     storage_info->assigned = cpu_to_be16(assigned);
 130
 131     for (i = 0; i < assigned; i++) {
 132         storage_info->entries[i] = cpu_to_be32(subincrement_id);
 133         subincrement_id += SCLP_INCREMENT_UNIT;
 134     }
 135     sccb->h.response_code = cpu_to_be16(SCLP_RC_NORMAL_READ_COMPLETION);
 136 }
 137
 138 static void read_storage_element1_info(SCLPDevice *sclp, SCCB *sccb)
 139 {
 140     ReadStorageElementInfo *storage_info = (ReadStorageElementInfo *) sccb;
 141     sclpMemoryHotplugDev *mhd = get_sclp_memory_hotplug_dev();
 142
 143     if (!mhd) {
 144         sccb->h.response_code = cpu_to_be16(SCLP_RC_INVALID_SCLP_COMMAND);
 145         return;
 146     }
 147
 148     if ((mhd->standby_mem_size >> mhd->increment_size) >= 0x10000) {
 149         sccb->h.response_code = cpu_to_be16(SCLP_RC_SCCB_BOUNDARY_VIOLATION);
 150         return;
 151     }
 152
 153     /* Return information regarding standby memory */
 154     storage_info->max_id = cpu_to_be16(mhd->standby_mem_size ? 1 : 0);
 155     storage_info->assigned = cpu_to_be16(mhd->standby_mem_size >>
 156                                          mhd->increment_size);
 157     storage_info->standby = cpu_to_be16(mhd->standby_mem_size >>
 158                                         mhd->increment_size);
 159     sccb->h.response_code = cpu_to_be16(SCLP_RC_STANDBY_READ_COMPLETION);
 160 }
 161
 162 static void attach_storage_element(SCLPDevice *sclp, SCCB *sccb,
 163                                    uint16_t element)
 164 {
 165     int i, assigned, subincrement_id;
 166     AttachStorageElement *attach_info = (AttachStorageElement *) sccb;
 167     sclpMemoryHotplugDev *mhd = get_sclp_memory_hotplug_dev();
 168
 169     if (!mhd) {
 170         sccb->h.response_code = cpu_to_be16(SCLP_RC_INVALID_SCLP_COMMAND);
 171         return;
 172     }
 173
 174     if (element != 1) {
 175         sccb->h.response_code = cpu_to_be16(SCLP_RC_INVALID_SCLP_COMMAND);
 176         return;
 177     }
 178
 179     assigned = mhd->standby_mem_size >> mhd->increment_size;
 180     attach_info->assigned = cpu_to_be16(assigned);
 181     subincrement_id = ((ram_size >> mhd->increment_size) << 16)
 182                       + SCLP_STARTING_SUBINCREMENT_ID;
 183     for (i = 0; i < assigned; i++) {
 184         attach_info->entries[i] = cpu_to_be32(subincrement_id);
 185         subincrement_id += SCLP_INCREMENT_UNIT;
 186     }
 187     sccb->h.response_code = cpu_to_be16(SCLP_RC_NORMAL_COMPLETION);
 188 }
 189
 190 static void assign_storage(SCLPDevice *sclp, SCCB *sccb)
 191 {
 192     MemoryRegion *mr = NULL;
 193     uint64_t this_subregion_size;
 194     AssignStorage *assign_info = (AssignStorage *) sccb;
 195     sclpMemoryHotplugDev *mhd = get_sclp_memory_hotplug_dev();
 196     ram_addr_t assign_addr;
 197     MemoryRegion *sysmem = get_system_memory();
 198
 199     if (!mhd) {
 200         sccb->h.response_code = cpu_to_be16(SCLP_RC_INVALID_SCLP_COMMAND);
 201         return;
 202     }
 203     assign_addr = (assign_info->rn - 1) * mhd->rzm;
 204
 205     if ((assign_addr % MEM_SECTION_SIZE == 0) &&
 206         (assign_addr >= mhd->padded_ram_size)) {
 207         /* Re-use existing memory region if found */
 208         mr = memory_region_find(sysmem, assign_addr, 1).mr;
 209         memory_region_unref(mr);
 210         if (!mr) {
 211
 212             MemoryRegion *standby_ram = g_new(MemoryRegion, 1);
 213
 214             /* offset to align to standby_subregion_size for allocation */
 215             ram_addr_t offset = assign_addr -
 216                                 (assign_addr - mhd->padded_ram_size)
 217                                 % mhd->standby_subregion_size;
 218
 219             /* strlen("standby.ram") + 4 (Max of KVM_MEMORY_SLOTS) +  NULL */
 220             char id[16];
 221             snprintf(id, 16, "standby.ram%d",
 222                      (int)((offset - mhd->padded_ram_size) /
 223                      mhd->standby_subregion_size) + 1);
 224
 225             /* Allocate a subregion of the calculated standby_subregion_size */
 226             if (offset + mhd->standby_subregion_size >
 227                 mhd->padded_ram_size + mhd->standby_mem_size) {
 228                 this_subregion_size = mhd->padded_ram_size +
 229                   mhd->standby_mem_size - offset;
 230             } else {
 231                 this_subregion_size = mhd->standby_subregion_size;
 232             }
 233
 234             memory_region_init_ram(standby_ram, NULL, id, this_subregion_size,
 235                                    &error_fatal);
 236             /* This is a hack to make memory hotunplug work again. Once we have
 237              * subdevices, we have to unparent them when unassigning memory,
 238              * instead of doing it via the ref count of the MemoryRegion. */
 239             object_ref(OBJECT(standby_ram));
 240             object_unparent(OBJECT(standby_ram));
 241             vmstate_register_ram_global(standby_ram);
 242             memory_region_add_subregion(sysmem, offset, standby_ram);
 243         }
 244         /* The specified subregion is no longer in standby */
 245         mhd->standby_state_map[(assign_addr - mhd->padded_ram_size)
 246                                / MEM_SECTION_SIZE] = 1;
 247     }
 248     sccb->h.response_code = cpu_to_be16(SCLP_RC_NORMAL_COMPLETION);
 249 }
 250
 251 static void unassign_storage(SCLPDevice *sclp, SCCB *sccb)
 252 {
 253     MemoryRegion *mr = NULL;
 254     AssignStorage *assign_info = (AssignStorage *) sccb;
 255     sclpMemoryHotplugDev *mhd = get_sclp_memory_hotplug_dev();
 256     ram_addr_t unassign_addr;
 257     MemoryRegion *sysmem = get_system_memory();
 258
 259     if (!mhd) {
 260         sccb->h.response_code = cpu_to_be16(SCLP_RC_INVALID_SCLP_COMMAND);
 261         return;
 262     }
 263     unassign_addr = (assign_info->rn - 1) * mhd->rzm;
 264
 265     /* if the addr is a multiple of 256 MB */
 266     if ((unassign_addr % MEM_SECTION_SIZE == 0) &&
 267         (unassign_addr >= mhd->padded_ram_size)) {
 268         mhd->standby_state_map[(unassign_addr -
 269                            mhd->padded_ram_size) / MEM_SECTION_SIZE] = 0;
 270
 271         /* find the specified memory region and destroy it */
 272         mr = memory_region_find(sysmem, unassign_addr, 1).mr;
 273         memory_region_unref(mr);
 274         if (mr) {
 275             int i;
 276             int is_removable = 1;
 277             ram_addr_t map_offset = (unassign_addr - mhd->padded_ram_size -
 278                                      (unassign_addr - mhd->padded_ram_size)
 279                                      % mhd->standby_subregion_size);
 280             /* Mark all affected subregions as 'standby' once again */
 281             for (i = 0;
 282                  i < (mhd->standby_subregion_size / MEM_SECTION_SIZE);
 283                  i++) {
 284
 285                 if (mhd->standby_state_map[i + map_offset / MEM_SECTION_SIZE]) {
 286                     is_removable = 0;
 287                     break;
 288                 }
 289             }
 290             if (is_removable) {
 291                 memory_region_del_subregion(sysmem, mr);
 292                 object_unref(OBJECT(mr));
 293             }
 294         }
 295     }
 296     sccb->h.response_code = cpu_to_be16(SCLP_RC_NORMAL_COMPLETION);
 297 }
 298
 299 /* Provide information about the CPU */
 300 static void sclp_read_cpu_info(SCLPDevice *sclp, SCCB *sccb)
 301 {
 302     ReadCpuInfo *cpu_info = (ReadCpuInfo *) sccb;
 303     CPUState *cpu;
 304     int cpu_count = 0;
 305     int i = 0;
 306
 307     CPU_FOREACH(cpu) {
 308         cpu_count++;
 309     }
 310
 311     cpu_info->nr_configured = cpu_to_be16(cpu_count);
 312     cpu_info->offset_configured = cpu_to_be16(offsetof(ReadCpuInfo, entries));
 313     cpu_info->nr_standby = cpu_to_be16(0);
 314
 315     /* The standby offset is 16-byte for each CPU */
 316     cpu_info->offset_standby = cpu_to_be16(cpu_info->offset_configured
 317         + cpu_info->nr_configured*sizeof(CPUEntry));
 318
 319     for (i = 0; i < cpu_count; i++) {
 320         cpu_info->entries[i].address = i;
 321         cpu_info->entries[i].type = 0;
 322     }
 323
 324     sccb->h.response_code = cpu_to_be16(SCLP_RC_NORMAL_READ_COMPLETION);
 325 }
 326
 327 static void sclp_execute(SCLPDevice *sclp, SCCB *sccb, uint32_t code)
 328 {
 329     SCLPDeviceClass *sclp_c = SCLP_GET_CLASS(sclp);
 330     SCLPEventFacility *ef = sclp->event_facility;
 331     SCLPEventFacilityClass *efc = EVENT_FACILITY_GET_CLASS(ef);
 332
 333     switch (code & SCLP_CMD_CODE_MASK) {
 334     case SCLP_CMDW_READ_SCP_INFO:
 335     case SCLP_CMDW_READ_SCP_INFO_FORCED:
 336         sclp_c->read_SCP_info(sclp, sccb);
 337         break;
 338     case SCLP_CMDW_READ_CPU_INFO:
 339         sclp_c->read_cpu_info(sclp, sccb);
 340         break;
 341     case SCLP_READ_STORAGE_ELEMENT_INFO:
 342         if (code & 0xff00) {
 343             sclp_c->read_storage_element1_info(sclp, sccb);
 344         } else {
 345             sclp_c->read_storage_element0_info(sclp, sccb);
 346         }
 347         break;
 348     case SCLP_ATTACH_STORAGE_ELEMENT:
 349         sclp_c->attach_storage_element(sclp, sccb, (code & 0xff00) >> 8);
 350         break;
 351     case SCLP_ASSIGN_STORAGE:
 352         sclp_c->assign_storage(sclp, sccb);
 353         break;
 354     case SCLP_UNASSIGN_STORAGE:
 355         sclp_c->unassign_storage(sclp, sccb);
 356         break;
 357     case SCLP_CMDW_CONFIGURE_PCI:
 358         s390_pci_sclp_configure(1, sccb);
 359         break;
 360     case SCLP_CMDW_DECONFIGURE_PCI:
 361         s390_pci_sclp_configure(0, sccb);
 362         break;
 363     default:
 364         efc->command_handler(ef, sccb, code);
 365         break;
 366     }
 367 }
 368
 369 int sclp_service_call(CPUS390XState *env, uint64_t sccb, uint32_t code)
 370 {
 371     SCLPDevice *sclp = get_sclp_device();
 372     SCLPDeviceClass *sclp_c = SCLP_GET_CLASS(sclp);
 373     int r = 0;
 374     SCCB work_sccb;
 375
 376     hwaddr sccb_len = sizeof(SCCB);
 377
 378     /* first some basic checks on program checks */
 379     if (env->psw.mask & PSW_MASK_PSTATE) {
 380         r = -PGM_PRIVILEGED;
 381         goto out;
 382     }
 383     if (cpu_physical_memory_is_io(sccb)) {
 384         r = -PGM_ADDRESSING;
 385         goto out;
 386     }
 387     if ((sccb & ~0x1fffUL) == 0 || (sccb & ~0x1fffUL) == env->psa
 388         || (sccb & ~0x7ffffff8UL) != 0) {
 389         r = -PGM_SPECIFICATION;
 390         goto out;
 391     }
 392
 393     /*
 394      * we want to work on a private copy of the sccb, to prevent guests
 395      * from playing dirty tricks by modifying the memory content after
 396      * the host has checked the values
 397      */
 398     cpu_physical_memory_read(sccb, &work_sccb, sccb_len);
 399
 400     /* Valid sccb sizes */
 401     if (be16_to_cpu(work_sccb.h.length) < sizeof(SCCBHeader) ||
 402         be16_to_cpu(work_sccb.h.length) > SCCB_SIZE) {
 403         r = -PGM_SPECIFICATION;
 404         goto out;
 405     }
 406
 407     sclp_c->execute(sclp, (SCCB *)&work_sccb, code);
 408
 409     cpu_physical_memory_write(sccb, &work_sccb,
 410                               be16_to_cpu(work_sccb.h.length));
 411
 412     sclp_c->service_interrupt(sclp, sccb);
 413
 414 out:
 415     return r;
 416 }
 417
 418 static void service_interrupt(SCLPDevice *sclp, uint32_t sccb)
 419 {
 420     SCLPEventFacility *ef = sclp->event_facility;
 421     SCLPEventFacilityClass *efc = EVENT_FACILITY_GET_CLASS(ef);
 422
 423     uint32_t param = sccb & ~3;
 424
 425     /* Indicate whether an event is still pending */
 426     param |= efc->event_pending(ef) ? 1 : 0;
 427
 428     if (!param) {
 429         /* No need to send an interrupt, there's nothing to be notified about */
 430         return;
 431     }
 432     s390_sclp_extint(param);
 433 }
 434
 435 void sclp_service_interrupt(uint32_t sccb)
 436 {
 437     SCLPDevice *sclp = get_sclp_device();
 438     SCLPDeviceClass *sclp_c = SCLP_GET_CLASS(sclp);
 439
 440     sclp_c->service_interrupt(sclp, sccb);
 441 }
 442
 443 /* qemu object creation and initialization functions */
 444
 445 void s390_sclp_init(void)
 446 {
 447     Object *new = object_new(TYPE_SCLP);
 448
 449     object_property_add_child(qdev_get_machine(), TYPE_SCLP, new,
 450                               NULL);
 451     object_unref(OBJECT(new));
 452     qdev_init_nofail(DEVICE(new));
 453 }
 454
 455 static void sclp_realize(DeviceState *dev, Error **errp)
 456 {
 457     MachineState *machine = MACHINE(qdev_get_machine());
 458     SCLPDevice *sclp = SCLP(dev);
 459     Error *err = NULL;
 460     uint64_t hw_limit;
 461     int ret;
 462
 463     object_property_set_bool(OBJECT(sclp->event_facility), true, "realized",
 464                              &err);
 465     if (err) {
 466         goto out;
 467     }
 468
 469     ret = s390_set_memory_limit(machine->maxram_size, &hw_limit);
 470     if (ret == -E2BIG) {
 471         error_setg(&err, "qemu: host supports a maximum of %" PRIu64 " GB",
 472                    hw_limit >> 30);
 473     } else if (ret) {
 474         error_setg(&err, "qemu: setting the guest size failed");
 475     }
 476
 477 out:
 478     error_propagate(errp, err);
 479 }
 480
 481 static void sclp_memory_init(SCLPDevice *sclp)
 482 {
 483     MachineState *machine = MACHINE(qdev_get_machine());
 484     ram_addr_t initial_mem = machine->ram_size;
 485     ram_addr_t max_mem = machine->maxram_size;
 486     ram_addr_t standby_mem = max_mem - initial_mem;
 487     ram_addr_t pad_mem = 0;
 488     int increment_size = 20;
 489
 490     /* The storage increment size is a multiple of 1M and is a power of 2.
 491      * The number of storage increments must be MAX_STORAGE_INCREMENTS or fewer.
 492      * The variable 'increment_size' is an exponent of 2 that can be
 493      * used to calculate the size (in bytes) of an increment. */
 494     while ((initial_mem >> increment_size) > MAX_STORAGE_INCREMENTS) {
 495         increment_size++;
 496     }
 497     if (machine->ram_slots) {
 498         while ((standby_mem >> increment_size) > MAX_STORAGE_INCREMENTS) {
 499             increment_size++;
 500         }
 501     }
 502     sclp->increment_size = increment_size;
 503
 504     /* The core and standby memory areas need to be aligned with
 505      * the increment size.  In effect, this can cause the
 506      * user-specified memory size to be rounded down to align
 507      * with the nearest increment boundary. */
 508     initial_mem = initial_mem >> increment_size << increment_size;
 509     standby_mem = standby_mem >> increment_size << increment_size;
 510
 511     /* If the size of ram is not on a MEM_SECTION_SIZE boundary,
 512        calculate the pad size necessary to force this boundary. */
 513     if (machine->ram_slots && standby_mem) {
 514         sclpMemoryHotplugDev *mhd = init_sclp_memory_hotplug_dev();
 515
 516         if (initial_mem % MEM_SECTION_SIZE) {
 517             pad_mem = MEM_SECTION_SIZE - initial_mem % MEM_SECTION_SIZE;
 518         }
 519         mhd->increment_size = increment_size;
 520         mhd->pad_size = pad_mem;
 521         mhd->standby_mem_size = standby_mem;
 522     }
 523     machine->ram_size = initial_mem;
 524     machine->maxram_size = initial_mem + pad_mem + standby_mem;
 525     /* let's propagate the changed ram size into the global variable. */
 526     ram_size = initial_mem;
 527 }
 528
 529 static void sclp_init(Object *obj)
 530 {
 531     SCLPDevice *sclp = SCLP(obj);
 532     Object *new;
 533
 534     new = object_new(TYPE_SCLP_EVENT_FACILITY);
 535     object_property_add_child(obj, TYPE_SCLP_EVENT_FACILITY, new, NULL);
 536     /* qdev_device_add searches the sysbus for TYPE_SCLP_EVENTS_BUS */
 537     qdev_set_parent_bus(DEVICE(new), sysbus_get_default());
 538     object_unref(new);
 539     sclp->event_facility = EVENT_FACILITY(new);
 540
 541     sclp_memory_init(sclp);
 542 }
 543
 544 static void sclp_class_init(ObjectClass *oc, void *data)
 545 {
 546     SCLPDeviceClass *sc = SCLP_CLASS(oc);
 547     DeviceClass *dc = DEVICE_CLASS(oc);
 548
 549     dc->desc = "SCLP (Service-Call Logical Processor)";
 550     dc->realize = sclp_realize;
 551     dc->hotpluggable = false;
 552     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
 553
 554     sc->read_SCP_info = read_SCP_info;
 555     sc->read_storage_element0_info = read_storage_element0_info;
 556     sc->read_storage_element1_info = read_storage_element1_info;
 557     sc->attach_storage_element = attach_storage_element;
 558     sc->assign_storage = assign_storage;
 559     sc->unassign_storage = unassign_storage;
 560     sc->read_cpu_info = sclp_read_cpu_info;
 561     sc->execute = sclp_execute;
 562     sc->service_interrupt = service_interrupt;
 563 }
 564
 565 static TypeInfo sclp_info = {
 566     .name = TYPE_SCLP,
 567     .parent = TYPE_DEVICE,
 568     .instance_init = sclp_init,
 569     .instance_size = sizeof(SCLPDevice),
 570     .class_init = sclp_class_init,
 571     .class_size = sizeof(SCLPDeviceClass),
 572 };
 573
 574 sclpMemoryHotplugDev *init_sclp_memory_hotplug_dev(void)
 575 {
 576     DeviceState *dev;
 577     dev = qdev_create(NULL, TYPE_SCLP_MEMORY_HOTPLUG_DEV);
 578     object_property_add_child(qdev_get_machine(),
 579                               TYPE_SCLP_MEMORY_HOTPLUG_DEV,
 580                               OBJECT(dev), NULL);
 581     qdev_init_nofail(dev);
 582     return SCLP_MEMORY_HOTPLUG_DEV(object_resolve_path(
 583                                    TYPE_SCLP_MEMORY_HOTPLUG_DEV, NULL));
 584 }
 585
 586 sclpMemoryHotplugDev *get_sclp_memory_hotplug_dev(void)
 587 {
 588     return SCLP_MEMORY_HOTPLUG_DEV(object_resolve_path(
 589                                    TYPE_SCLP_MEMORY_HOTPLUG_DEV, NULL));
 590 }
 591
 592 static void sclp_memory_hotplug_dev_class_init(ObjectClass *klass,
 593                                                void *data)
 594 {
 595     DeviceClass *dc = DEVICE_CLASS(klass);
 596
 597     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
 598 }
 599
 600 static TypeInfo sclp_memory_hotplug_dev_info = {
 601     .name = TYPE_SCLP_MEMORY_HOTPLUG_DEV,
 602     .parent = TYPE_SYS_BUS_DEVICE,
 603     .instance_size = sizeof(sclpMemoryHotplugDev),
 604     .class_init = sclp_memory_hotplug_dev_class_init,
 605 };
 606
 607 static void register_types(void)
 608 {
 609     type_register_static(&sclp_memory_hotplug_dev_info);
 610     type_register_static(&sclp_info);
 611 }
 612 type_init(register_types);