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 "qemu/osdep.h"
  16 #include "cpu.h"
  17 #include "sysemu/kvm.h"
  18 #include "exec/memory.h"
  19 #include "sysemu/sysemu.h"
  20 #include "exec/address-spaces.h"
  21 #include "hw/boards.h"
  22 #include "hw/s390x/sclp.h"
  23 #include "hw/s390x/event-facility.h"
  24 #include "hw/s390x/s390-pci-bus.h"
  25
  26 static inline SCLPDevice *get_sclp_device(void)
  27 {
  28     return SCLP(object_resolve_path_type("", TYPE_SCLP, NULL));
  29 }
  30
  31 /* Provide information about the configuration, CPUs and storage */
  32 static void read_SCP_info(SCLPDevice *sclp, SCCB *sccb)
  33 {
  34     ReadInfo *read_info = (ReadInfo *) sccb;
  35     MachineState *machine = MACHINE(qdev_get_machine());
  36     sclpMemoryHotplugDev *mhd = get_sclp_memory_hotplug_dev();
  37     CPUState *cpu;
  38     int cpu_count = 0;
  39     int i = 0;
  40     int rnsize, rnmax;
  41     int slots = MIN(machine->ram_slots, s390_get_memslot_count(kvm_state));
  42
  43     CPU_FOREACH(cpu) {
  44         cpu_count++;
  45     }
  46
  47     /* CPU information */
  48     read_info->entries_cpu = cpu_to_be16(cpu_count);
  49     read_info->offset_cpu = cpu_to_be16(offsetof(ReadInfo, entries));
  50     read_info->highest_cpu = cpu_to_be16(max_cpus);
  51
  52     for (i = 0; i < cpu_count; i++) {
  53         read_info->entries[i].address = i;
  54         read_info->entries[i].type = 0;
  55     }
  56
  57     read_info->facilities = cpu_to_be64(SCLP_HAS_CPU_INFO |
  58                                         SCLP_HAS_PCI_RECONFIG);
  59
  60     /* Memory Hotplug is only supported for the ccw machine type */
  61     if (mhd) {
  62         mhd->standby_subregion_size = MEM_SECTION_SIZE;
  63         /* Deduct the memory slot already used for core */
  64         if (slots > 0) {
  65             while ((mhd->standby_subregion_size * (slots - 1)
  66                     < mhd->standby_mem_size)) {
  67                 mhd->standby_subregion_size = mhd->standby_subregion_size << 1;
  68             }
  69         }
  70         /*
  71          * Initialize mapping of guest standby memory sections indicating which
  72          * are and are not online. Assume all standby memory begins offline.
  73          */
  74         if (mhd->standby_state_map == 0) {
  75             if (mhd->standby_mem_size % mhd->standby_subregion_size) {
  76                 mhd->standby_state_map = g_malloc0((mhd->standby_mem_size /
  77                                              mhd->standby_subregion_size + 1) *
  78                                              (mhd->standby_subregion_size /
  79                                              MEM_SECTION_SIZE));
  80             } else {
  81                 mhd->standby_state_map = g_malloc0(mhd->standby_mem_size /
  82                                                    MEM_SECTION_SIZE);
  83             }
  84         }
  85         mhd->padded_ram_size = ram_size + mhd->pad_size;
  86         mhd->rzm = 1 << mhd->increment_size;
  87
  88         read_info->facilities |= cpu_to_be64(SCLP_FC_ASSIGN_ATTACH_READ_STOR);
  89     }
  90
  91     rnsize = 1 << (sclp->increment_size - 20);
  92     if (rnsize <= 128) {
  93         read_info->rnsize = rnsize;
  94     } else {
  95         read_info->rnsize = 0;
  96         read_info->rnsize2 = cpu_to_be32(rnsize);
  97     }
  98
  99     rnmax = machine->maxram_size >> sclp->increment_size;
 100     if (rnmax < 0x10000) {
 101         read_info->rnmax = cpu_to_be16(rnmax);
 102     } else {
 103         read_info->rnmax = cpu_to_be16(0);
 104         read_info->rnmax2 = cpu_to_be64(rnmax);
 105     }
 106
 107     sccb->h.response_code = cpu_to_be16(SCLP_RC_NORMAL_READ_COMPLETION);
 108 }
 109
 110 static void read_storage_element0_info(SCLPDevice *sclp, SCCB *sccb)
 111 {
 112     int i, assigned;
 113     int subincrement_id = SCLP_STARTING_SUBINCREMENT_ID;
 114     ReadStorageElementInfo *storage_info = (ReadStorageElementInfo *) sccb;
 115     sclpMemoryHotplugDev *mhd = get_sclp_memory_hotplug_dev();
 116
 117     if (!mhd) {
 118         sccb->h.response_code = cpu_to_be16(SCLP_RC_INVALID_SCLP_COMMAND);
 119         return;
 120     }
 121
 122     if ((ram_size >> mhd->increment_size) >= 0x10000) {
 123         sccb->h.response_code = cpu_to_be16(SCLP_RC_SCCB_BOUNDARY_VIOLATION);
 124         return;
 125     }
 126
 127     /* Return information regarding core memory */
 128     storage_info->max_id = cpu_to_be16(mhd->standby_mem_size ? 1 : 0);
 129     assigned = ram_size >> mhd->increment_size;
 130     storage_info->assigned = cpu_to_be16(assigned);
 131
 132     for (i = 0; i < assigned; i++) {
 133         storage_info->entries[i] = cpu_to_be32(subincrement_id);
 134         subincrement_id += SCLP_INCREMENT_UNIT;
 135     }
 136     sccb->h.response_code = cpu_to_be16(SCLP_RC_NORMAL_READ_COMPLETION);
 137 }
 138
 139 static void read_storage_element1_info(SCLPDevice *sclp, SCCB *sccb)
 140 {
 141     ReadStorageElementInfo *storage_info = (ReadStorageElementInfo *) sccb;
 142     sclpMemoryHotplugDev *mhd = get_sclp_memory_hotplug_dev();
 143
 144     if (!mhd) {
 145         sccb->h.response_code = cpu_to_be16(SCLP_RC_INVALID_SCLP_COMMAND);
 146         return;
 147     }
 148
 149     if ((mhd->standby_mem_size >> mhd->increment_size) >= 0x10000) {
 150         sccb->h.response_code = cpu_to_be16(SCLP_RC_SCCB_BOUNDARY_VIOLATION);
 151         return;
 152     }
 153
 154     /* Return information regarding standby memory */
 155     storage_info->max_id = cpu_to_be16(mhd->standby_mem_size ? 1 : 0);
 156     storage_info->assigned = cpu_to_be16(mhd->standby_mem_size >>
 157                                          mhd->increment_size);
 158     storage_info->standby = cpu_to_be16(mhd->standby_mem_size >>
 159                                         mhd->increment_size);
 160     sccb->h.response_code = cpu_to_be16(SCLP_RC_STANDBY_READ_COMPLETION);
 161 }
 162
 163 static void attach_storage_element(SCLPDevice *sclp, SCCB *sccb,
 164                                    uint16_t element)
 165 {
 166     int i, assigned, subincrement_id;
 167     AttachStorageElement *attach_info = (AttachStorageElement *) sccb;
 168     sclpMemoryHotplugDev *mhd = get_sclp_memory_hotplug_dev();
 169
 170     if (!mhd) {
 171         sccb->h.response_code = cpu_to_be16(SCLP_RC_INVALID_SCLP_COMMAND);
 172         return;
 173     }
 174
 175     if (element != 1) {
 176         sccb->h.response_code = cpu_to_be16(SCLP_RC_INVALID_SCLP_COMMAND);
 177         return;
 178     }
 179
 180     assigned = mhd->standby_mem_size >> mhd->increment_size;
 181     attach_info->assigned = cpu_to_be16(assigned);
 182     subincrement_id = ((ram_size >> mhd->increment_size) << 16)
 183                       + SCLP_STARTING_SUBINCREMENT_ID;
 184     for (i = 0; i < assigned; i++) {
 185         attach_info->entries[i] = cpu_to_be32(subincrement_id);
 186         subincrement_id += SCLP_INCREMENT_UNIT;
 187     }
 188     sccb->h.response_code = cpu_to_be16(SCLP_RC_NORMAL_COMPLETION);
 189 }
 190
 191 static void assign_storage(SCLPDevice *sclp, SCCB *sccb)
 192 {
 193     MemoryRegion *mr = NULL;
 194     uint64_t this_subregion_size;
 195     AssignStorage *assign_info = (AssignStorage *) sccb;
 196     sclpMemoryHotplugDev *mhd = get_sclp_memory_hotplug_dev();
 197     ram_addr_t assign_addr;
 198     MemoryRegion *sysmem = get_system_memory();
 199
 200     if (!mhd) {
 201         sccb->h.response_code = cpu_to_be16(SCLP_RC_INVALID_SCLP_COMMAND);
 202         return;
 203     }
 204     assign_addr = (assign_info->rn - 1) * mhd->rzm;
 205
 206     if ((assign_addr % MEM_SECTION_SIZE == 0) &&
 207         (assign_addr >= mhd->padded_ram_size)) {
 208         /* Re-use existing memory region if found */
 209         mr = memory_region_find(sysmem, assign_addr, 1).mr;
 210         memory_region_unref(mr);
 211         if (!mr) {
 212
 213             MemoryRegion *standby_ram = g_new(MemoryRegion, 1);
 214
 215             /* offset to align to standby_subregion_size for allocation */
 216             ram_addr_t offset = assign_addr -
 217                                 (assign_addr - mhd->padded_ram_size)
 218                                 % mhd->standby_subregion_size;
 219
 220             /* strlen("standby.ram") + 4 (Max of KVM_MEMORY_SLOTS) +  NULL */
 221             char id[16];
 222             snprintf(id, 16, "standby.ram%d",
 223                      (int)((offset - mhd->padded_ram_size) /
 224                      mhd->standby_subregion_size) + 1);
 225
 226             /* Allocate a subregion of the calculated standby_subregion_size */
 227             if (offset + mhd->standby_subregion_size >
 228                 mhd->padded_ram_size + mhd->standby_mem_size) {
 229                 this_subregion_size = mhd->padded_ram_size +
 230                   mhd->standby_mem_size - offset;
 231             } else {
 232                 this_subregion_size = mhd->standby_subregion_size;
 233             }
 234
 235             memory_region_init_ram(standby_ram, NULL, id, this_subregion_size,
 236                                    &error_fatal);
 237             /* This is a hack to make memory hotunplug work again. Once we have
 238              * subdevices, we have to unparent them when unassigning memory,
 239              * instead of doing it via the ref count of the MemoryRegion. */
 240             object_ref(OBJECT(standby_ram));
 241             object_unparent(OBJECT(standby_ram));
 242             vmstate_register_ram_global(standby_ram);
 243             memory_region_add_subregion(sysmem, offset, standby_ram);
 244         }
 245         /* The specified subregion is no longer in standby */
 246         mhd->standby_state_map[(assign_addr - mhd->padded_ram_size)
 247                                / MEM_SECTION_SIZE] = 1;
 248     }
 249     sccb->h.response_code = cpu_to_be16(SCLP_RC_NORMAL_COMPLETION);
 250 }
 251
 252 static void unassign_storage(SCLPDevice *sclp, SCCB *sccb)
 253 {
 254     MemoryRegion *mr = NULL;
 255     AssignStorage *assign_info = (AssignStorage *) sccb;
 256     sclpMemoryHotplugDev *mhd = get_sclp_memory_hotplug_dev();
 257     ram_addr_t unassign_addr;
 258     MemoryRegion *sysmem = get_system_memory();
 259
 260     if (!mhd) {
 261         sccb->h.response_code = cpu_to_be16(SCLP_RC_INVALID_SCLP_COMMAND);
 262         return;
 263     }
 264     unassign_addr = (assign_info->rn - 1) * mhd->rzm;
 265
 266     /* if the addr is a multiple of 256 MB */
 267     if ((unassign_addr % MEM_SECTION_SIZE == 0) &&
 268         (unassign_addr >= mhd->padded_ram_size)) {
 269         mhd->standby_state_map[(unassign_addr -
 270                            mhd->padded_ram_size) / MEM_SECTION_SIZE] = 0;
 271
 272         /* find the specified memory region and destroy it */
 273         mr = memory_region_find(sysmem, unassign_addr, 1).mr;
 274         memory_region_unref(mr);
 275         if (mr) {
 276             int i;
 277             int is_removable = 1;
 278             ram_addr_t map_offset = (unassign_addr - mhd->padded_ram_size -
 279                                      (unassign_addr - mhd->padded_ram_size)
 280                                      % mhd->standby_subregion_size);
 281             /* Mark all affected subregions as 'standby' once again */
 282             for (i = 0;
 283                  i < (mhd->standby_subregion_size / MEM_SECTION_SIZE);
 284                  i++) {
 285
 286                 if (mhd->standby_state_map[i + map_offset / MEM_SECTION_SIZE]) {
 287                     is_removable = 0;
 288                     break;
 289                 }
 290             }
 291             if (is_removable) {
 292                 memory_region_del_subregion(sysmem, mr);
 293                 object_unref(OBJECT(mr));
 294             }
 295         }
 296     }
 297     sccb->h.response_code = cpu_to_be16(SCLP_RC_NORMAL_COMPLETION);
 298 }
 299
 300 /* Provide information about the CPU */
 301 static void sclp_read_cpu_info(SCLPDevice *sclp, SCCB *sccb)
 302 {
 303     ReadCpuInfo *cpu_info = (ReadCpuInfo *) sccb;
 304     CPUState *cpu;
 305     int cpu_count = 0;
 306     int i = 0;
 307
 308     CPU_FOREACH(cpu) {
 309         cpu_count++;
 310     }
 311
 312     cpu_info->nr_configured = cpu_to_be16(cpu_count);
 313     cpu_info->offset_configured = cpu_to_be16(offsetof(ReadCpuInfo, entries));
 314     cpu_info->nr_standby = cpu_to_be16(0);
 315
 316     /* The standby offset is 16-byte for each CPU */
 317     cpu_info->offset_standby = cpu_to_be16(cpu_info->offset_configured
 318         + cpu_info->nr_configured*sizeof(CPUEntry));
 319
 320     for (i = 0; i < cpu_count; i++) {
 321         cpu_info->entries[i].address = i;
 322         cpu_info->entries[i].type = 0;
 323     }
 324
 325     sccb->h.response_code = cpu_to_be16(SCLP_RC_NORMAL_READ_COMPLETION);
 326 }
 327
 328 static void sclp_execute(SCLPDevice *sclp, SCCB *sccb, uint32_t code)
 329 {
 330     SCLPDeviceClass *sclp_c = SCLP_GET_CLASS(sclp);
 331     SCLPEventFacility *ef = sclp->event_facility;
 332     SCLPEventFacilityClass *efc = EVENT_FACILITY_GET_CLASS(ef);
 333
 334     switch (code & SCLP_CMD_CODE_MASK) {
 335     case SCLP_CMDW_READ_SCP_INFO:
 336     case SCLP_CMDW_READ_SCP_INFO_FORCED:
 337         sclp_c->read_SCP_info(sclp, sccb);
 338         break;
 339     case SCLP_CMDW_READ_CPU_INFO:
 340         sclp_c->read_cpu_info(sclp, sccb);
 341         break;
 342     case SCLP_READ_STORAGE_ELEMENT_INFO:
 343         if (code & 0xff00) {
 344             sclp_c->read_storage_element1_info(sclp, sccb);
 345         } else {
 346             sclp_c->read_storage_element0_info(sclp, sccb);
 347         }
 348         break;
 349     case SCLP_ATTACH_STORAGE_ELEMENT:
 350         sclp_c->attach_storage_element(sclp, sccb, (code & 0xff00) >> 8);
 351         break;
 352     case SCLP_ASSIGN_STORAGE:
 353         sclp_c->assign_storage(sclp, sccb);
 354         break;
 355     case SCLP_UNASSIGN_STORAGE:
 356         sclp_c->unassign_storage(sclp, sccb);
 357         break;
 358     case SCLP_CMDW_CONFIGURE_PCI:
 359         s390_pci_sclp_configure(1, sccb);
 360         break;
 361     case SCLP_CMDW_DECONFIGURE_PCI:
 362         s390_pci_sclp_configure(0, sccb);
 363         break;
 364     default:
 365         efc->command_handler(ef, sccb, code);
 366         break;
 367     }
 368 }
 369
 370 int sclp_service_call(CPUS390XState *env, uint64_t sccb, uint32_t code)
 371 {
 372     SCLPDevice *sclp = get_sclp_device();
 373     SCLPDeviceClass *sclp_c = SCLP_GET_CLASS(sclp);
 374     int r = 0;
 375     SCCB work_sccb;
 376
 377     hwaddr sccb_len = sizeof(SCCB);
 378
 379     /* first some basic checks on program checks */
 380     if (env->psw.mask & PSW_MASK_PSTATE) {
 381         r = -PGM_PRIVILEGED;
 382         goto out;
 383     }
 384     if (cpu_physical_memory_is_io(sccb)) {
 385         r = -PGM_ADDRESSING;
 386         goto out;
 387     }
 388     if ((sccb & ~0x1fffUL) == 0 || (sccb & ~0x1fffUL) == env->psa
 389         || (sccb & ~0x7ffffff8UL) != 0) {
 390         r = -PGM_SPECIFICATION;
 391         goto out;
 392     }
 393
 394     /*
 395      * we want to work on a private copy of the sccb, to prevent guests
 396      * from playing dirty tricks by modifying the memory content after
 397      * the host has checked the values
 398      */
 399     cpu_physical_memory_read(sccb, &work_sccb, sccb_len);
 400
 401     /* Valid sccb sizes */
 402     if (be16_to_cpu(work_sccb.h.length) < sizeof(SCCBHeader) ||
 403         be16_to_cpu(work_sccb.h.length) > SCCB_SIZE) {
 404         r = -PGM_SPECIFICATION;
 405         goto out;
 406     }
 407
 408     sclp_c->execute(sclp, (SCCB *)&work_sccb, code);
 409
 410     cpu_physical_memory_write(sccb, &work_sccb,
 411                               be16_to_cpu(work_sccb.h.length));
 412
 413     sclp_c->service_interrupt(sclp, sccb);
 414
 415 out:
 416     return r;
 417 }
 418
 419 static void service_interrupt(SCLPDevice *sclp, uint32_t sccb)
 420 {
 421     SCLPEventFacility *ef = sclp->event_facility;
 422     SCLPEventFacilityClass *efc = EVENT_FACILITY_GET_CLASS(ef);
 423
 424     uint32_t param = sccb & ~3;
 425
 426     /* Indicate whether an event is still pending */
 427     param |= efc->event_pending(ef) ? 1 : 0;
 428
 429     if (!param) {
 430         /* No need to send an interrupt, there's nothing to be notified about */
 431         return;
 432     }
 433     s390_sclp_extint(param);
 434 }
 435
 436 void sclp_service_interrupt(uint32_t sccb)
 437 {
 438     SCLPDevice *sclp = get_sclp_device();
 439     SCLPDeviceClass *sclp_c = SCLP_GET_CLASS(sclp);
 440
 441     sclp_c->service_interrupt(sclp, sccb);
 442 }
 443
 444 /* qemu object creation and initialization functions */
 445
 446 void s390_sclp_init(void)
 447 {
 448     Object *new = object_new(TYPE_SCLP);
 449
 450     object_property_add_child(qdev_get_machine(), TYPE_SCLP, new,
 451                               NULL);
 452     object_unref(OBJECT(new));
 453     qdev_init_nofail(DEVICE(new));
 454 }
 455
 456 static void sclp_realize(DeviceState *dev, Error **errp)
 457 {
 458     MachineState *machine = MACHINE(qdev_get_machine());
 459     SCLPDevice *sclp = SCLP(dev);
 460     Error *err = NULL;
 461     uint64_t hw_limit;
 462     int ret;
 463
 464     object_property_set_bool(OBJECT(sclp->event_facility), true, "realized",
 465                              &err);
 466     if (err) {
 467         goto out;
 468     }
 469     /*
 470      * qdev_device_add searches the sysbus for TYPE_SCLP_EVENTS_BUS. As long
 471      * as we can't find a fitting bus via the qom tree, we have to add the
 472      * event facility to the sysbus, so e.g. a sclp console can be created.
 473      */
 474     qdev_set_parent_bus(DEVICE(sclp->event_facility), sysbus_get_default());
 475
 476     ret = s390_set_memory_limit(machine->maxram_size, &hw_limit);
 477     if (ret == -E2BIG) {
 478         error_setg(&err, "qemu: host supports a maximum of %" PRIu64 " GB",
 479                    hw_limit >> 30);
 480     } else if (ret) {
 481         error_setg(&err, "qemu: setting the guest size failed");
 482     }
 483
 484 out:
 485     error_propagate(errp, err);
 486 }
 487
 488 static void sclp_memory_init(SCLPDevice *sclp)
 489 {
 490     MachineState *machine = MACHINE(qdev_get_machine());
 491     ram_addr_t initial_mem = machine->ram_size;
 492     ram_addr_t max_mem = machine->maxram_size;
 493     ram_addr_t standby_mem = max_mem - initial_mem;
 494     ram_addr_t pad_mem = 0;
 495     int increment_size = 20;
 496
 497     /* The storage increment size is a multiple of 1M and is a power of 2.
 498      * The number of storage increments must be MAX_STORAGE_INCREMENTS or fewer.
 499      * The variable 'increment_size' is an exponent of 2 that can be
 500      * used to calculate the size (in bytes) of an increment. */
 501     while ((initial_mem >> increment_size) > MAX_STORAGE_INCREMENTS) {
 502         increment_size++;
 503     }
 504     if (machine->ram_slots) {
 505         while ((standby_mem >> increment_size) > MAX_STORAGE_INCREMENTS) {
 506             increment_size++;
 507         }
 508     }
 509     sclp->increment_size = increment_size;
 510
 511     /* The core and standby memory areas need to be aligned with
 512      * the increment size.  In effect, this can cause the
 513      * user-specified memory size to be rounded down to align
 514      * with the nearest increment boundary. */
 515     initial_mem = initial_mem >> increment_size << increment_size;
 516     standby_mem = standby_mem >> increment_size << increment_size;
 517
 518     /* If the size of ram is not on a MEM_SECTION_SIZE boundary,
 519        calculate the pad size necessary to force this boundary. */
 520     if (machine->ram_slots && standby_mem) {
 521         sclpMemoryHotplugDev *mhd = init_sclp_memory_hotplug_dev();
 522
 523         if (initial_mem % MEM_SECTION_SIZE) {
 524             pad_mem = MEM_SECTION_SIZE - initial_mem % MEM_SECTION_SIZE;
 525         }
 526         mhd->increment_size = increment_size;
 527         mhd->pad_size = pad_mem;
 528         mhd->standby_mem_size = standby_mem;
 529     }
 530     machine->ram_size = initial_mem;
 531     machine->maxram_size = initial_mem + pad_mem + standby_mem;
 532     /* let's propagate the changed ram size into the global variable. */
 533     ram_size = initial_mem;
 534 }
 535
 536 static void sclp_init(Object *obj)
 537 {
 538     SCLPDevice *sclp = SCLP(obj);
 539     Object *new;
 540
 541     new = object_new(TYPE_SCLP_EVENT_FACILITY);
 542     object_property_add_child(obj, TYPE_SCLP_EVENT_FACILITY, new, NULL);
 543     object_unref(new);
 544     sclp->event_facility = EVENT_FACILITY(new);
 545
 546     sclp_memory_init(sclp);
 547 }
 548
 549 static void sclp_class_init(ObjectClass *oc, void *data)
 550 {
 551     SCLPDeviceClass *sc = SCLP_CLASS(oc);
 552     DeviceClass *dc = DEVICE_CLASS(oc);
 553
 554     dc->desc = "SCLP (Service-Call Logical Processor)";
 555     dc->realize = sclp_realize;
 556     dc->hotpluggable = false;
 557     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
 558
 559     sc->read_SCP_info = read_SCP_info;
 560     sc->read_storage_element0_info = read_storage_element0_info;
 561     sc->read_storage_element1_info = read_storage_element1_info;
 562     sc->attach_storage_element = attach_storage_element;
 563     sc->assign_storage = assign_storage;
 564     sc->unassign_storage = unassign_storage;
 565     sc->read_cpu_info = sclp_read_cpu_info;
 566     sc->execute = sclp_execute;
 567     sc->service_interrupt = service_interrupt;
 568 }
 569
 570 static TypeInfo sclp_info = {
 571     .name = TYPE_SCLP,
 572     .parent = TYPE_DEVICE,
 573     .instance_init = sclp_init,
 574     .instance_size = sizeof(SCLPDevice),
 575     .class_init = sclp_class_init,
 576     .class_size = sizeof(SCLPDeviceClass),
 577 };
 578
 579 sclpMemoryHotplugDev *init_sclp_memory_hotplug_dev(void)
 580 {
 581     DeviceState *dev;
 582     dev = qdev_create(NULL, TYPE_SCLP_MEMORY_HOTPLUG_DEV);
 583     object_property_add_child(qdev_get_machine(),
 584                               TYPE_SCLP_MEMORY_HOTPLUG_DEV,
 585                               OBJECT(dev), NULL);
 586     qdev_init_nofail(dev);
 587     return SCLP_MEMORY_HOTPLUG_DEV(object_resolve_path(
 588                                    TYPE_SCLP_MEMORY_HOTPLUG_DEV, NULL));
 589 }
 590
 591 sclpMemoryHotplugDev *get_sclp_memory_hotplug_dev(void)
 592 {
 593     return SCLP_MEMORY_HOTPLUG_DEV(object_resolve_path(
 594                                    TYPE_SCLP_MEMORY_HOTPLUG_DEV, NULL));
 595 }
 596
 597 static void sclp_memory_hotplug_dev_class_init(ObjectClass *klass,
 598                                                void *data)
 599 {
 600     DeviceClass *dc = DEVICE_CLASS(klass);
 601
 602     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
 603 }
 604
 605 static TypeInfo sclp_memory_hotplug_dev_info = {
 606     .name = TYPE_SCLP_MEMORY_HOTPLUG_DEV,
 607     .parent = TYPE_SYS_BUS_DEVICE,
 608     .instance_size = sizeof(sclpMemoryHotplugDev),
 609     .class_init = sclp_memory_hotplug_dev_class_init,
 610 };
 611
 612 static void register_types(void)
 613 {
 614     type_register_static(&sclp_memory_hotplug_dev_info);
 615     type_register_static(&sclp_info);
 616 }
 617 type_init(register_types);