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 "qapi/error.h"
  17 #include "cpu.h"
  18 #include "sysemu/kvm.h"
  19 #include "exec/memory.h"
  20 #include "sysemu/sysemu.h"
  21 #include "exec/address-spaces.h"
  22 #include "hw/boards.h"
  23 #include "hw/s390x/sclp.h"
  24 #include "hw/s390x/event-facility.h"
  25 #include "hw/s390x/s390-pci-bus.h"
  26
  27 static inline SCLPDevice *get_sclp_device(void)
  28 {
  29     return SCLP(object_resolve_path_type("", TYPE_SCLP, NULL));
  30 }
  31
  32 /* Provide information about the configuration, CPUs and storage */
  33 static void read_SCP_info(SCLPDevice *sclp, SCCB *sccb)
  34 {
  35     ReadInfo *read_info = (ReadInfo *) sccb;
  36     MachineState *machine = MACHINE(qdev_get_machine());
  37     sclpMemoryHotplugDev *mhd = get_sclp_memory_hotplug_dev();
  38     CPUState *cpu;
  39     int cpu_count = 0;
  40     int i = 0;
  41     int rnsize, rnmax;
  42     int slots = MIN(machine->ram_slots, s390_get_memslot_count(kvm_state));
  43
  44     CPU_FOREACH(cpu) {
  45         cpu_count++;
  46     }
  47
  48     /* CPU information */
  49     read_info->entries_cpu = cpu_to_be16(cpu_count);
  50     read_info->offset_cpu = cpu_to_be16(offsetof(ReadInfo, entries));
  51     read_info->highest_cpu = cpu_to_be16(max_cpus);
  52
  53     for (i = 0; i < cpu_count; i++) {
  54         read_info->entries[i].address = i;
  55         read_info->entries[i].type = 0;
  56     }
  57
  58     read_info->facilities = cpu_to_be64(SCLP_HAS_CPU_INFO |
  59                                         SCLP_HAS_PCI_RECONFIG);
  60
  61     /* Memory Hotplug is only supported for the ccw machine type */
  62     if (mhd) {
  63         mhd->standby_subregion_size = MEM_SECTION_SIZE;
  64         /* Deduct the memory slot already used for core */
  65         if (slots > 0) {
  66             while ((mhd->standby_subregion_size * (slots - 1)
  67                     < mhd->standby_mem_size)) {
  68                 mhd->standby_subregion_size = mhd->standby_subregion_size << 1;
  69             }
  70         }
  71         /*
  72          * Initialize mapping of guest standby memory sections indicating which
  73          * are and are not online. Assume all standby memory begins offline.
  74          */
  75         if (mhd->standby_state_map == 0) {
  76             if (mhd->standby_mem_size % mhd->standby_subregion_size) {
  77                 mhd->standby_state_map = g_malloc0((mhd->standby_mem_size /
  78                                              mhd->standby_subregion_size + 1) *
  79                                              (mhd->standby_subregion_size /
  80                                              MEM_SECTION_SIZE));
  81             } else {
  82                 mhd->standby_state_map = g_malloc0(mhd->standby_mem_size /
  83                                                    MEM_SECTION_SIZE);
  84             }
  85         }
  86         mhd->padded_ram_size = ram_size + mhd->pad_size;
  87         mhd->rzm = 1 << mhd->increment_size;
  88
  89         read_info->facilities |= cpu_to_be64(SCLP_FC_ASSIGN_ATTACH_READ_STOR);
  90     }
  91
  92     rnsize = 1 << (sclp->increment_size - 20);
  93     if (rnsize <= 128) {
  94         read_info->rnsize = rnsize;
  95     } else {
  96         read_info->rnsize = 0;
  97         read_info->rnsize2 = cpu_to_be32(rnsize);
  98     }
  99
 100     rnmax = machine->maxram_size >> sclp->increment_size;
 101     if (rnmax < 0x10000) {
 102         read_info->rnmax = cpu_to_be16(rnmax);
 103     } else {
 104         read_info->rnmax = cpu_to_be16(0);
 105         read_info->rnmax2 = cpu_to_be64(rnmax);
 106     }
 107
 108     sccb->h.response_code = cpu_to_be16(SCLP_RC_NORMAL_READ_COMPLETION);
 109 }
 110
 111 static void read_storage_element0_info(SCLPDevice *sclp, SCCB *sccb)
 112 {
 113     int i, assigned;
 114     int subincrement_id = SCLP_STARTING_SUBINCREMENT_ID;
 115     ReadStorageElementInfo *storage_info = (ReadStorageElementInfo *) sccb;
 116     sclpMemoryHotplugDev *mhd = get_sclp_memory_hotplug_dev();
 117
 118     if (!mhd) {
 119         sccb->h.response_code = cpu_to_be16(SCLP_RC_INVALID_SCLP_COMMAND);
 120         return;
 121     }
 122
 123     if ((ram_size >> mhd->increment_size) >= 0x10000) {
 124         sccb->h.response_code = cpu_to_be16(SCLP_RC_SCCB_BOUNDARY_VIOLATION);
 125         return;
 126     }
 127
 128     /* Return information regarding core memory */
 129     storage_info->max_id = cpu_to_be16(mhd->standby_mem_size ? 1 : 0);
 130     assigned = ram_size >> mhd->increment_size;
 131     storage_info->assigned = cpu_to_be16(assigned);
 132
 133     for (i = 0; i < assigned; i++) {
 134         storage_info->entries[i] = cpu_to_be32(subincrement_id);
 135         subincrement_id += SCLP_INCREMENT_UNIT;
 136     }
 137     sccb->h.response_code = cpu_to_be16(SCLP_RC_NORMAL_READ_COMPLETION);
 138 }
 139
 140 static void read_storage_element1_info(SCLPDevice *sclp, SCCB *sccb)
 141 {
 142     ReadStorageElementInfo *storage_info = (ReadStorageElementInfo *) sccb;
 143     sclpMemoryHotplugDev *mhd = get_sclp_memory_hotplug_dev();
 144
 145     if (!mhd) {
 146         sccb->h.response_code = cpu_to_be16(SCLP_RC_INVALID_SCLP_COMMAND);
 147         return;
 148     }
 149
 150     if ((mhd->standby_mem_size >> mhd->increment_size) >= 0x10000) {
 151         sccb->h.response_code = cpu_to_be16(SCLP_RC_SCCB_BOUNDARY_VIOLATION);
 152         return;
 153     }
 154
 155     /* Return information regarding standby memory */
 156     storage_info->max_id = cpu_to_be16(mhd->standby_mem_size ? 1 : 0);
 157     storage_info->assigned = cpu_to_be16(mhd->standby_mem_size >>
 158                                          mhd->increment_size);
 159     storage_info->standby = cpu_to_be16(mhd->standby_mem_size >>
 160                                         mhd->increment_size);
 161     sccb->h.response_code = cpu_to_be16(SCLP_RC_STANDBY_READ_COMPLETION);
 162 }
 163
 164 static void attach_storage_element(SCLPDevice *sclp, SCCB *sccb,
 165                                    uint16_t element)
 166 {
 167     int i, assigned, subincrement_id;
 168     AttachStorageElement *attach_info = (AttachStorageElement *) sccb;
 169     sclpMemoryHotplugDev *mhd = get_sclp_memory_hotplug_dev();
 170
 171     if (!mhd) {
 172         sccb->h.response_code = cpu_to_be16(SCLP_RC_INVALID_SCLP_COMMAND);
 173         return;
 174     }
 175
 176     if (element != 1) {
 177         sccb->h.response_code = cpu_to_be16(SCLP_RC_INVALID_SCLP_COMMAND);
 178         return;
 179     }
 180
 181     assigned = mhd->standby_mem_size >> mhd->increment_size;
 182     attach_info->assigned = cpu_to_be16(assigned);
 183     subincrement_id = ((ram_size >> mhd->increment_size) << 16)
 184                       + SCLP_STARTING_SUBINCREMENT_ID;
 185     for (i = 0; i < assigned; i++) {
 186         attach_info->entries[i] = cpu_to_be32(subincrement_id);
 187         subincrement_id += SCLP_INCREMENT_UNIT;
 188     }
 189     sccb->h.response_code = cpu_to_be16(SCLP_RC_NORMAL_COMPLETION);
 190 }
 191
 192 static void assign_storage(SCLPDevice *sclp, SCCB *sccb)
 193 {
 194     MemoryRegion *mr = NULL;
 195     uint64_t this_subregion_size;
 196     AssignStorage *assign_info = (AssignStorage *) sccb;
 197     sclpMemoryHotplugDev *mhd = get_sclp_memory_hotplug_dev();
 198     ram_addr_t assign_addr;
 199     MemoryRegion *sysmem = get_system_memory();
 200
 201     if (!mhd) {
 202         sccb->h.response_code = cpu_to_be16(SCLP_RC_INVALID_SCLP_COMMAND);
 203         return;
 204     }
 205     assign_addr = (assign_info->rn - 1) * mhd->rzm;
 206
 207     if ((assign_addr % MEM_SECTION_SIZE == 0) &&
 208         (assign_addr >= mhd->padded_ram_size)) {
 209         /* Re-use existing memory region if found */
 210         mr = memory_region_find(sysmem, assign_addr, 1).mr;
 211         memory_region_unref(mr);
 212         if (!mr) {
 213
 214             MemoryRegion *standby_ram = g_new(MemoryRegion, 1);
 215
 216             /* offset to align to standby_subregion_size for allocation */
 217             ram_addr_t offset = assign_addr -
 218                                 (assign_addr - mhd->padded_ram_size)
 219                                 % mhd->standby_subregion_size;
 220
 221             /* strlen("standby.ram") + 4 (Max of KVM_MEMORY_SLOTS) +  NULL */
 222             char id[16];
 223             snprintf(id, 16, "standby.ram%d",
 224                      (int)((offset - mhd->padded_ram_size) /
 225                      mhd->standby_subregion_size) + 1);
 226
 227             /* Allocate a subregion of the calculated standby_subregion_size */
 228             if (offset + mhd->standby_subregion_size >
 229                 mhd->padded_ram_size + mhd->standby_mem_size) {
 230                 this_subregion_size = mhd->padded_ram_size +
 231                   mhd->standby_mem_size - offset;
 232             } else {
 233                 this_subregion_size = mhd->standby_subregion_size;
 234             }
 235
 236             memory_region_init_ram(standby_ram, NULL, id, this_subregion_size,
 237                                    &error_fatal);
 238             /* This is a hack to make memory hotunplug work again. Once we have
 239              * subdevices, we have to unparent them when unassigning memory,
 240              * instead of doing it via the ref count of the MemoryRegion. */
 241             object_ref(OBJECT(standby_ram));
 242             object_unparent(OBJECT(standby_ram));
 243             vmstate_register_ram_global(standby_ram);
 244             memory_region_add_subregion(sysmem, offset, standby_ram);
 245         }
 246         /* The specified subregion is no longer in standby */
 247         mhd->standby_state_map[(assign_addr - mhd->padded_ram_size)
 248                                / MEM_SECTION_SIZE] = 1;
 249     }
 250     sccb->h.response_code = cpu_to_be16(SCLP_RC_NORMAL_COMPLETION);
 251 }
 252
 253 static void unassign_storage(SCLPDevice *sclp, SCCB *sccb)
 254 {
 255     MemoryRegion *mr = NULL;
 256     AssignStorage *assign_info = (AssignStorage *) sccb;
 257     sclpMemoryHotplugDev *mhd = get_sclp_memory_hotplug_dev();
 258     ram_addr_t unassign_addr;
 259     MemoryRegion *sysmem = get_system_memory();
 260
 261     if (!mhd) {
 262         sccb->h.response_code = cpu_to_be16(SCLP_RC_INVALID_SCLP_COMMAND);
 263         return;
 264     }
 265     unassign_addr = (assign_info->rn - 1) * mhd->rzm;
 266
 267     /* if the addr is a multiple of 256 MB */
 268     if ((unassign_addr % MEM_SECTION_SIZE == 0) &&
 269         (unassign_addr >= mhd->padded_ram_size)) {
 270         mhd->standby_state_map[(unassign_addr -
 271                            mhd->padded_ram_size) / MEM_SECTION_SIZE] = 0;
 272
 273         /* find the specified memory region and destroy it */
 274         mr = memory_region_find(sysmem, unassign_addr, 1).mr;
 275         memory_region_unref(mr);
 276         if (mr) {
 277             int i;
 278             int is_removable = 1;
 279             ram_addr_t map_offset = (unassign_addr - mhd->padded_ram_size -
 280                                      (unassign_addr - mhd->padded_ram_size)
 281                                      % mhd->standby_subregion_size);
 282             /* Mark all affected subregions as 'standby' once again */
 283             for (i = 0;
 284                  i < (mhd->standby_subregion_size / MEM_SECTION_SIZE);
 285                  i++) {
 286
 287                 if (mhd->standby_state_map[i + map_offset / MEM_SECTION_SIZE]) {
 288                     is_removable = 0;
 289                     break;
 290                 }
 291             }
 292             if (is_removable) {
 293                 memory_region_del_subregion(sysmem, mr);
 294                 object_unref(OBJECT(mr));
 295             }
 296         }
 297     }
 298     sccb->h.response_code = cpu_to_be16(SCLP_RC_NORMAL_COMPLETION);
 299 }
 300
 301 /* Provide information about the CPU */
 302 static void sclp_read_cpu_info(SCLPDevice *sclp, SCCB *sccb)
 303 {
 304     ReadCpuInfo *cpu_info = (ReadCpuInfo *) sccb;
 305     CPUState *cpu;
 306     int cpu_count = 0;
 307     int i = 0;
 308
 309     CPU_FOREACH(cpu) {
 310         cpu_count++;
 311     }
 312
 313     cpu_info->nr_configured = cpu_to_be16(cpu_count);
 314     cpu_info->offset_configured = cpu_to_be16(offsetof(ReadCpuInfo, entries));
 315     cpu_info->nr_standby = cpu_to_be16(0);
 316
 317     /* The standby offset is 16-byte for each CPU */
 318     cpu_info->offset_standby = cpu_to_be16(cpu_info->offset_configured
 319         + cpu_info->nr_configured*sizeof(CPUEntry));
 320
 321     for (i = 0; i < cpu_count; i++) {
 322         cpu_info->entries[i].address = i;
 323         cpu_info->entries[i].type = 0;
 324     }
 325
 326     sccb->h.response_code = cpu_to_be16(SCLP_RC_NORMAL_READ_COMPLETION);
 327 }
 328
 329 static void sclp_execute(SCLPDevice *sclp, SCCB *sccb, uint32_t code)
 330 {
 331     SCLPDeviceClass *sclp_c = SCLP_GET_CLASS(sclp);
 332     SCLPEventFacility *ef = sclp->event_facility;
 333     SCLPEventFacilityClass *efc = EVENT_FACILITY_GET_CLASS(ef);
 334
 335     switch (code & SCLP_CMD_CODE_MASK) {
 336     case SCLP_CMDW_READ_SCP_INFO:
 337     case SCLP_CMDW_READ_SCP_INFO_FORCED:
 338         sclp_c->read_SCP_info(sclp, sccb);
 339         break;
 340     case SCLP_CMDW_READ_CPU_INFO:
 341         sclp_c->read_cpu_info(sclp, sccb);
 342         break;
 343     case SCLP_READ_STORAGE_ELEMENT_INFO:
 344         if (code & 0xff00) {
 345             sclp_c->read_storage_element1_info(sclp, sccb);
 346         } else {
 347             sclp_c->read_storage_element0_info(sclp, sccb);
 348         }
 349         break;
 350     case SCLP_ATTACH_STORAGE_ELEMENT:
 351         sclp_c->attach_storage_element(sclp, sccb, (code & 0xff00) >> 8);
 352         break;
 353     case SCLP_ASSIGN_STORAGE:
 354         sclp_c->assign_storage(sclp, sccb);
 355         break;
 356     case SCLP_UNASSIGN_STORAGE:
 357         sclp_c->unassign_storage(sclp, sccb);
 358         break;
 359     case SCLP_CMDW_CONFIGURE_PCI:
 360         s390_pci_sclp_configure(sccb);
 361         break;
 362     case SCLP_CMDW_DECONFIGURE_PCI:
 363         s390_pci_sclp_deconfigure(sccb);
 364         break;
 365     default:
 366         efc->command_handler(ef, sccb, code);
 367         break;
 368     }
 369 }
 370
 371 int sclp_service_call(CPUS390XState *env, uint64_t sccb, uint32_t code)
 372 {
 373     SCLPDevice *sclp = get_sclp_device();
 374     SCLPDeviceClass *sclp_c = SCLP_GET_CLASS(sclp);
 375     int r = 0;
 376     SCCB work_sccb;
 377
 378     hwaddr sccb_len = sizeof(SCCB);
 379
 380     /* first some basic checks on program checks */
 381     if (env->psw.mask & PSW_MASK_PSTATE) {
 382         r = -PGM_PRIVILEGED;
 383         goto out;
 384     }
 385     if (cpu_physical_memory_is_io(sccb)) {
 386         r = -PGM_ADDRESSING;
 387         goto out;
 388     }
 389     if ((sccb & ~0x1fffUL) == 0 || (sccb & ~0x1fffUL) == env->psa
 390         || (sccb & ~0x7ffffff8UL) != 0) {
 391         r = -PGM_SPECIFICATION;
 392         goto out;
 393     }
 394
 395     /*
 396      * we want to work on a private copy of the sccb, to prevent guests
 397      * from playing dirty tricks by modifying the memory content after
 398      * the host has checked the values
 399      */
 400     cpu_physical_memory_read(sccb, &work_sccb, sccb_len);
 401
 402     /* Valid sccb sizes */
 403     if (be16_to_cpu(work_sccb.h.length) < sizeof(SCCBHeader) ||
 404         be16_to_cpu(work_sccb.h.length) > SCCB_SIZE) {
 405         r = -PGM_SPECIFICATION;
 406         goto out;
 407     }
 408
 409     sclp_c->execute(sclp, (SCCB *)&work_sccb, code);
 410
 411     cpu_physical_memory_write(sccb, &work_sccb,
 412                               be16_to_cpu(work_sccb.h.length));
 413
 414     sclp_c->service_interrupt(sclp, sccb);
 415
 416 out:
 417     return r;
 418 }
 419
 420 static void service_interrupt(SCLPDevice *sclp, uint32_t sccb)
 421 {
 422     SCLPEventFacility *ef = sclp->event_facility;
 423     SCLPEventFacilityClass *efc = EVENT_FACILITY_GET_CLASS(ef);
 424
 425     uint32_t param = sccb & ~3;
 426
 427     /* Indicate whether an event is still pending */
 428     param |= efc->event_pending(ef) ? 1 : 0;
 429
 430     if (!param) {
 431         /* No need to send an interrupt, there's nothing to be notified about */
 432         return;
 433     }
 434     s390_sclp_extint(param);
 435 }
 436
 437 void sclp_service_interrupt(uint32_t sccb)
 438 {
 439     SCLPDevice *sclp = get_sclp_device();
 440     SCLPDeviceClass *sclp_c = SCLP_GET_CLASS(sclp);
 441
 442     sclp_c->service_interrupt(sclp, sccb);
 443 }
 444
 445 /* qemu object creation and initialization functions */
 446
 447 void s390_sclp_init(void)
 448 {
 449     Object *new = object_new(TYPE_SCLP);
 450
 451     object_property_add_child(qdev_get_machine(), TYPE_SCLP, new,
 452                               NULL);
 453     object_unref(OBJECT(new));
 454     qdev_init_nofail(DEVICE(new));
 455 }
 456
 457 static void sclp_realize(DeviceState *dev, Error **errp)
 458 {
 459     MachineState *machine = MACHINE(qdev_get_machine());
 460     SCLPDevice *sclp = SCLP(dev);
 461     Error *err = NULL;
 462     uint64_t hw_limit;
 463     int ret;
 464
 465     object_property_set_bool(OBJECT(sclp->event_facility), true, "realized",
 466                              &err);
 467     if (err) {
 468         goto out;
 469     }
 470     /*
 471      * qdev_device_add searches the sysbus for TYPE_SCLP_EVENTS_BUS. As long
 472      * as we can't find a fitting bus via the qom tree, we have to add the
 473      * event facility to the sysbus, so e.g. a sclp console can be created.
 474      */
 475     qdev_set_parent_bus(DEVICE(sclp->event_facility), sysbus_get_default());
 476
 477     ret = s390_set_memory_limit(machine->maxram_size, &hw_limit);
 478     if (ret == -E2BIG) {
 479         error_setg(&err, "qemu: host supports a maximum of %" PRIu64 " GB",
 480                    hw_limit >> 30);
 481     } else if (ret) {
 482         error_setg(&err, "qemu: setting the guest size failed");
 483     }
 484
 485 out:
 486     error_propagate(errp, err);
 487 }
 488
 489 static void sclp_memory_init(SCLPDevice *sclp)
 490 {
 491     MachineState *machine = MACHINE(qdev_get_machine());
 492     ram_addr_t initial_mem = machine->ram_size;
 493     ram_addr_t max_mem = machine->maxram_size;
 494     ram_addr_t standby_mem = max_mem - initial_mem;
 495     ram_addr_t pad_mem = 0;
 496     int increment_size = 20;
 497
 498     /* The storage increment size is a multiple of 1M and is a power of 2.
 499      * The number of storage increments must be MAX_STORAGE_INCREMENTS or fewer.
 500      * The variable 'increment_size' is an exponent of 2 that can be
 501      * used to calculate the size (in bytes) of an increment. */
 502     while ((initial_mem >> increment_size) > MAX_STORAGE_INCREMENTS) {
 503         increment_size++;
 504     }
 505     if (machine->ram_slots) {
 506         while ((standby_mem >> increment_size) > MAX_STORAGE_INCREMENTS) {
 507             increment_size++;
 508         }
 509     }
 510     sclp->increment_size = increment_size;
 511
 512     /* The core and standby memory areas need to be aligned with
 513      * the increment size.  In effect, this can cause the
 514      * user-specified memory size to be rounded down to align
 515      * with the nearest increment boundary. */
 516     initial_mem = initial_mem >> increment_size << increment_size;
 517     standby_mem = standby_mem >> increment_size << increment_size;
 518
 519     /* If the size of ram is not on a MEM_SECTION_SIZE boundary,
 520        calculate the pad size necessary to force this boundary. */
 521     if (machine->ram_slots && standby_mem) {
 522         sclpMemoryHotplugDev *mhd = init_sclp_memory_hotplug_dev();
 523
 524         if (initial_mem % MEM_SECTION_SIZE) {
 525             pad_mem = MEM_SECTION_SIZE - initial_mem % MEM_SECTION_SIZE;
 526         }
 527         mhd->increment_size = increment_size;
 528         mhd->pad_size = pad_mem;
 529         mhd->standby_mem_size = standby_mem;
 530     }
 531     machine->ram_size = initial_mem;
 532     machine->maxram_size = initial_mem + pad_mem + standby_mem;
 533     /* let's propagate the changed ram size into the global variable. */
 534     ram_size = initial_mem;
 535 }
 536
 537 static void sclp_init(Object *obj)
 538 {
 539     SCLPDevice *sclp = SCLP(obj);
 540     Object *new;
 541
 542     new = object_new(TYPE_SCLP_EVENT_FACILITY);
 543     object_property_add_child(obj, TYPE_SCLP_EVENT_FACILITY, new, NULL);
 544     object_unref(new);
 545     sclp->event_facility = EVENT_FACILITY(new);
 546
 547     sclp_memory_init(sclp);
 548 }
 549
 550 static void sclp_class_init(ObjectClass *oc, void *data)
 551 {
 552     SCLPDeviceClass *sc = SCLP_CLASS(oc);
 553     DeviceClass *dc = DEVICE_CLASS(oc);
 554
 555     dc->desc = "SCLP (Service-Call Logical Processor)";
 556     dc->realize = sclp_realize;
 557     dc->hotpluggable = false;
 558     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
 559
 560     sc->read_SCP_info = read_SCP_info;
 561     sc->read_storage_element0_info = read_storage_element0_info;
 562     sc->read_storage_element1_info = read_storage_element1_info;
 563     sc->attach_storage_element = attach_storage_element;
 564     sc->assign_storage = assign_storage;
 565     sc->unassign_storage = unassign_storage;
 566     sc->read_cpu_info = sclp_read_cpu_info;
 567     sc->execute = sclp_execute;
 568     sc->service_interrupt = service_interrupt;
 569 }
 570
 571 static TypeInfo sclp_info = {
 572     .name = TYPE_SCLP,
 573     .parent = TYPE_DEVICE,
 574     .instance_init = sclp_init,
 575     .instance_size = sizeof(SCLPDevice),
 576     .class_init = sclp_class_init,
 577     .class_size = sizeof(SCLPDeviceClass),
 578 };
 579
 580 sclpMemoryHotplugDev *init_sclp_memory_hotplug_dev(void)
 581 {
 582     DeviceState *dev;
 583     dev = qdev_create(NULL, TYPE_SCLP_MEMORY_HOTPLUG_DEV);
 584     object_property_add_child(qdev_get_machine(),
 585                               TYPE_SCLP_MEMORY_HOTPLUG_DEV,
 586                               OBJECT(dev), NULL);
 587     qdev_init_nofail(dev);
 588     return SCLP_MEMORY_HOTPLUG_DEV(object_resolve_path(
 589                                    TYPE_SCLP_MEMORY_HOTPLUG_DEV, NULL));
 590 }
 591
 592 sclpMemoryHotplugDev *get_sclp_memory_hotplug_dev(void)
 593 {
 594     return SCLP_MEMORY_HOTPLUG_DEV(object_resolve_path(
 595                                    TYPE_SCLP_MEMORY_HOTPLUG_DEV, NULL));
 596 }
 597
 598 static void sclp_memory_hotplug_dev_class_init(ObjectClass *klass,
 599                                                void *data)
 600 {
 601     DeviceClass *dc = DEVICE_CLASS(klass);
 602
 603     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
 604 }
 605
 606 static TypeInfo sclp_memory_hotplug_dev_info = {
 607     .name = TYPE_SCLP_MEMORY_HOTPLUG_DEV,
 608     .parent = TYPE_SYS_BUS_DEVICE,
 609     .instance_size = sizeof(sclpMemoryHotplugDev),
 610     .class_init = sclp_memory_hotplug_dev_class_init,
 611 };
 612
 613 static void register_types(void)
 614 {
 615     type_register_static(&sclp_memory_hotplug_dev_info);
 616     type_register_static(&sclp_info);
 617 }
 618 type_init(register_types);