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 #include "hw/s390x/ipl.h"
  27
  28 static inline SCLPDevice *get_sclp_device(void)
  29 {
  30     static SCLPDevice *sclp;
  31
  32     if (!sclp) {
  33         sclp = SCLP(object_resolve_path_type("", TYPE_SCLP, NULL));
  34     }
  35     return sclp;
  36 }
  37
  38 static void prepare_cpu_entries(SCLPDevice *sclp, CPUEntry *entry, int count)
  39 {
  40     uint8_t features[SCCB_CPU_FEATURE_LEN] = { 0 };
  41     int i;
  42
  43     s390_get_feat_block(S390_FEAT_TYPE_SCLP_CPU, features);
  44     for (i = 0; i < count; i++) {
  45         entry[i].address = i;
  46         entry[i].type = 0;
  47         memcpy(entry[i].features, features, sizeof(entry[i].features));
  48     }
  49 }
  50
  51 /* Provide information about the configuration, CPUs and storage */
  52 static void read_SCP_info(SCLPDevice *sclp, SCCB *sccb)
  53 {
  54     ReadInfo *read_info = (ReadInfo *) sccb;
  55     MachineState *machine = MACHINE(qdev_get_machine());
  56     sclpMemoryHotplugDev *mhd = get_sclp_memory_hotplug_dev();
  57     CPUState *cpu;
  58     int cpu_count = 0;
  59     int rnsize, rnmax;
  60     int slots = MIN(machine->ram_slots, s390_get_memslot_count(kvm_state));
  61     IplParameterBlock *ipib = s390_ipl_get_iplb();
  62
  63     CPU_FOREACH(cpu) {
  64         cpu_count++;
  65     }
  66
  67     /* CPU information */
  68     read_info->entries_cpu = cpu_to_be16(cpu_count);
  69     read_info->offset_cpu = cpu_to_be16(offsetof(ReadInfo, entries));
  70     read_info->highest_cpu = cpu_to_be16(max_cpus);
  71
  72     read_info->ibc_val = cpu_to_be32(s390_get_ibc_val());
  73
  74     /* Configuration Characteristic (Extension) */
  75     s390_get_feat_block(S390_FEAT_TYPE_SCLP_CONF_CHAR,
  76                          read_info->conf_char);
  77     s390_get_feat_block(S390_FEAT_TYPE_SCLP_CONF_CHAR_EXT,
  78                          read_info->conf_char_ext);
  79
  80     prepare_cpu_entries(sclp, read_info->entries, cpu_count);
  81
  82     read_info->facilities = cpu_to_be64(SCLP_HAS_CPU_INFO |
  83                                         SCLP_HAS_PCI_RECONFIG);
  84
  85     /* Memory Hotplug is only supported for the ccw machine type */
  86     if (mhd) {
  87         mhd->standby_subregion_size = MEM_SECTION_SIZE;
  88         /* Deduct the memory slot already used for core */
  89         if (slots > 0) {
  90             while ((mhd->standby_subregion_size * (slots - 1)
  91                     < mhd->standby_mem_size)) {
  92                 mhd->standby_subregion_size = mhd->standby_subregion_size << 1;
  93             }
  94         }
  95         /*
  96          * Initialize mapping of guest standby memory sections indicating which
  97          * are and are not online. Assume all standby memory begins offline.
  98          */
  99         if (mhd->standby_state_map == 0) {
 100             if (mhd->standby_mem_size % mhd->standby_subregion_size) {
 101                 mhd->standby_state_map = g_malloc0((mhd->standby_mem_size /
 102                                              mhd->standby_subregion_size + 1) *
 103                                              (mhd->standby_subregion_size /
 104                                              MEM_SECTION_SIZE));
 105             } else {
 106                 mhd->standby_state_map = g_malloc0(mhd->standby_mem_size /
 107                                                    MEM_SECTION_SIZE);
 108             }
 109         }
 110         mhd->padded_ram_size = ram_size + mhd->pad_size;
 111         mhd->rzm = 1 << mhd->increment_size;
 112
 113         read_info->facilities |= cpu_to_be64(SCLP_FC_ASSIGN_ATTACH_READ_STOR);
 114     }
 115     read_info->mha_pow = s390_get_mha_pow();
 116     read_info->hmfai = cpu_to_be32(s390_get_hmfai());
 117
 118     rnsize = 1 << (sclp->increment_size - 20);
 119     if (rnsize <= 128) {
 120         read_info->rnsize = rnsize;
 121     } else {
 122         read_info->rnsize = 0;
 123         read_info->rnsize2 = cpu_to_be32(rnsize);
 124     }
 125
 126     rnmax = machine->maxram_size >> sclp->increment_size;
 127     if (rnmax < 0x10000) {
 128         read_info->rnmax = cpu_to_be16(rnmax);
 129     } else {
 130         read_info->rnmax = cpu_to_be16(0);
 131         read_info->rnmax2 = cpu_to_be64(rnmax);
 132     }
 133
 134     if (ipib && ipib->flags & DIAG308_FLAGS_LP_VALID) {
 135         memcpy(&read_info->loadparm, &ipib->loadparm,
 136                sizeof(read_info->loadparm));
 137     } else {
 138         s390_ipl_set_loadparm(read_info->loadparm);
 139     }
 140
 141     sccb->h.response_code = cpu_to_be16(SCLP_RC_NORMAL_READ_COMPLETION);
 142 }
 143
 144 static void read_storage_element0_info(SCLPDevice *sclp, SCCB *sccb)
 145 {
 146     int i, assigned;
 147     int subincrement_id = SCLP_STARTING_SUBINCREMENT_ID;
 148     ReadStorageElementInfo *storage_info = (ReadStorageElementInfo *) sccb;
 149     sclpMemoryHotplugDev *mhd = get_sclp_memory_hotplug_dev();
 150
 151     if (!mhd) {
 152         sccb->h.response_code = cpu_to_be16(SCLP_RC_INVALID_SCLP_COMMAND);
 153         return;
 154     }
 155
 156     if ((ram_size >> mhd->increment_size) >= 0x10000) {
 157         sccb->h.response_code = cpu_to_be16(SCLP_RC_SCCB_BOUNDARY_VIOLATION);
 158         return;
 159     }
 160
 161     /* Return information regarding core memory */
 162     storage_info->max_id = cpu_to_be16(mhd->standby_mem_size ? 1 : 0);
 163     assigned = ram_size >> mhd->increment_size;
 164     storage_info->assigned = cpu_to_be16(assigned);
 165
 166     for (i = 0; i < assigned; i++) {
 167         storage_info->entries[i] = cpu_to_be32(subincrement_id);
 168         subincrement_id += SCLP_INCREMENT_UNIT;
 169     }
 170     sccb->h.response_code = cpu_to_be16(SCLP_RC_NORMAL_READ_COMPLETION);
 171 }
 172
 173 static void read_storage_element1_info(SCLPDevice *sclp, SCCB *sccb)
 174 {
 175     ReadStorageElementInfo *storage_info = (ReadStorageElementInfo *) sccb;
 176     sclpMemoryHotplugDev *mhd = get_sclp_memory_hotplug_dev();
 177
 178     if (!mhd) {
 179         sccb->h.response_code = cpu_to_be16(SCLP_RC_INVALID_SCLP_COMMAND);
 180         return;
 181     }
 182
 183     if ((mhd->standby_mem_size >> mhd->increment_size) >= 0x10000) {
 184         sccb->h.response_code = cpu_to_be16(SCLP_RC_SCCB_BOUNDARY_VIOLATION);
 185         return;
 186     }
 187
 188     /* Return information regarding standby memory */
 189     storage_info->max_id = cpu_to_be16(mhd->standby_mem_size ? 1 : 0);
 190     storage_info->assigned = cpu_to_be16(mhd->standby_mem_size >>
 191                                          mhd->increment_size);
 192     storage_info->standby = cpu_to_be16(mhd->standby_mem_size >>
 193                                         mhd->increment_size);
 194     sccb->h.response_code = cpu_to_be16(SCLP_RC_STANDBY_READ_COMPLETION);
 195 }
 196
 197 static void attach_storage_element(SCLPDevice *sclp, SCCB *sccb,
 198                                    uint16_t element)
 199 {
 200     int i, assigned, subincrement_id;
 201     AttachStorageElement *attach_info = (AttachStorageElement *) sccb;
 202     sclpMemoryHotplugDev *mhd = get_sclp_memory_hotplug_dev();
 203
 204     if (!mhd) {
 205         sccb->h.response_code = cpu_to_be16(SCLP_RC_INVALID_SCLP_COMMAND);
 206         return;
 207     }
 208
 209     if (element != 1) {
 210         sccb->h.response_code = cpu_to_be16(SCLP_RC_INVALID_SCLP_COMMAND);
 211         return;
 212     }
 213
 214     assigned = mhd->standby_mem_size >> mhd->increment_size;
 215     attach_info->assigned = cpu_to_be16(assigned);
 216     subincrement_id = ((ram_size >> mhd->increment_size) << 16)
 217                       + SCLP_STARTING_SUBINCREMENT_ID;
 218     for (i = 0; i < assigned; i++) {
 219         attach_info->entries[i] = cpu_to_be32(subincrement_id);
 220         subincrement_id += SCLP_INCREMENT_UNIT;
 221     }
 222     sccb->h.response_code = cpu_to_be16(SCLP_RC_NORMAL_COMPLETION);
 223 }
 224
 225 static void assign_storage(SCLPDevice *sclp, SCCB *sccb)
 226 {
 227     MemoryRegion *mr = NULL;
 228     uint64_t this_subregion_size;
 229     AssignStorage *assign_info = (AssignStorage *) sccb;
 230     sclpMemoryHotplugDev *mhd = get_sclp_memory_hotplug_dev();
 231     ram_addr_t assign_addr;
 232     MemoryRegion *sysmem = get_system_memory();
 233
 234     if (!mhd) {
 235         sccb->h.response_code = cpu_to_be16(SCLP_RC_INVALID_SCLP_COMMAND);
 236         return;
 237     }
 238     assign_addr = (assign_info->rn - 1) * mhd->rzm;
 239
 240     if ((assign_addr % MEM_SECTION_SIZE == 0) &&
 241         (assign_addr >= mhd->padded_ram_size)) {
 242         /* Re-use existing memory region if found */
 243         mr = memory_region_find(sysmem, assign_addr, 1).mr;
 244         memory_region_unref(mr);
 245         if (!mr) {
 246
 247             MemoryRegion *standby_ram = g_new(MemoryRegion, 1);
 248
 249             /* offset to align to standby_subregion_size for allocation */
 250             ram_addr_t offset = assign_addr -
 251                                 (assign_addr - mhd->padded_ram_size)
 252                                 % mhd->standby_subregion_size;
 253
 254             /* strlen("standby.ram") + 4 (Max of KVM_MEMORY_SLOTS) +  NULL */
 255             char id[16];
 256             snprintf(id, 16, "standby.ram%d",
 257                      (int)((offset - mhd->padded_ram_size) /
 258                      mhd->standby_subregion_size) + 1);
 259
 260             /* Allocate a subregion of the calculated standby_subregion_size */
 261             if (offset + mhd->standby_subregion_size >
 262                 mhd->padded_ram_size + mhd->standby_mem_size) {
 263                 this_subregion_size = mhd->padded_ram_size +
 264                   mhd->standby_mem_size - offset;
 265             } else {
 266                 this_subregion_size = mhd->standby_subregion_size;
 267             }
 268
 269             memory_region_init_ram_nomigrate(standby_ram, NULL, id, this_subregion_size,
 270                                    &error_fatal);
 271             /* This is a hack to make memory hotunplug work again. Once we have
 272              * subdevices, we have to unparent them when unassigning memory,
 273              * instead of doing it via the ref count of the MemoryRegion. */
 274             object_ref(OBJECT(standby_ram));
 275             object_unparent(OBJECT(standby_ram));
 276             vmstate_register_ram_global(standby_ram);
 277             memory_region_add_subregion(sysmem, offset, standby_ram);
 278         }
 279         /* The specified subregion is no longer in standby */
 280         mhd->standby_state_map[(assign_addr - mhd->padded_ram_size)
 281                                / MEM_SECTION_SIZE] = 1;
 282     }
 283     sccb->h.response_code = cpu_to_be16(SCLP_RC_NORMAL_COMPLETION);
 284 }
 285
 286 static void unassign_storage(SCLPDevice *sclp, SCCB *sccb)
 287 {
 288     MemoryRegion *mr = NULL;
 289     AssignStorage *assign_info = (AssignStorage *) sccb;
 290     sclpMemoryHotplugDev *mhd = get_sclp_memory_hotplug_dev();
 291     ram_addr_t unassign_addr;
 292     MemoryRegion *sysmem = get_system_memory();
 293
 294     if (!mhd) {
 295         sccb->h.response_code = cpu_to_be16(SCLP_RC_INVALID_SCLP_COMMAND);
 296         return;
 297     }
 298     unassign_addr = (assign_info->rn - 1) * mhd->rzm;
 299
 300     /* if the addr is a multiple of 256 MB */
 301     if ((unassign_addr % MEM_SECTION_SIZE == 0) &&
 302         (unassign_addr >= mhd->padded_ram_size)) {
 303         mhd->standby_state_map[(unassign_addr -
 304                            mhd->padded_ram_size) / MEM_SECTION_SIZE] = 0;
 305
 306         /* find the specified memory region and destroy it */
 307         mr = memory_region_find(sysmem, unassign_addr, 1).mr;
 308         memory_region_unref(mr);
 309         if (mr) {
 310             int i;
 311             int is_removable = 1;
 312             ram_addr_t map_offset = (unassign_addr - mhd->padded_ram_size -
 313                                      (unassign_addr - mhd->padded_ram_size)
 314                                      % mhd->standby_subregion_size);
 315             /* Mark all affected subregions as 'standby' once again */
 316             for (i = 0;
 317                  i < (mhd->standby_subregion_size / MEM_SECTION_SIZE);
 318                  i++) {
 319
 320                 if (mhd->standby_state_map[i + map_offset / MEM_SECTION_SIZE]) {
 321                     is_removable = 0;
 322                     break;
 323                 }
 324             }
 325             if (is_removable) {
 326                 memory_region_del_subregion(sysmem, mr);
 327                 object_unref(OBJECT(mr));
 328             }
 329         }
 330     }
 331     sccb->h.response_code = cpu_to_be16(SCLP_RC_NORMAL_COMPLETION);
 332 }
 333
 334 /* Provide information about the CPU */
 335 static void sclp_read_cpu_info(SCLPDevice *sclp, SCCB *sccb)
 336 {
 337     ReadCpuInfo *cpu_info = (ReadCpuInfo *) sccb;
 338     CPUState *cpu;
 339     int cpu_count = 0;
 340
 341     CPU_FOREACH(cpu) {
 342         cpu_count++;
 343     }
 344
 345     cpu_info->nr_configured = cpu_to_be16(cpu_count);
 346     cpu_info->offset_configured = cpu_to_be16(offsetof(ReadCpuInfo, entries));
 347     cpu_info->nr_standby = cpu_to_be16(0);
 348
 349     /* The standby offset is 16-byte for each CPU */
 350     cpu_info->offset_standby = cpu_to_be16(cpu_info->offset_configured
 351         + cpu_info->nr_configured*sizeof(CPUEntry));
 352
 353     prepare_cpu_entries(sclp, cpu_info->entries, cpu_count);
 354
 355     sccb->h.response_code = cpu_to_be16(SCLP_RC_NORMAL_READ_COMPLETION);
 356 }
 357
 358 static void sclp_execute(SCLPDevice *sclp, SCCB *sccb, uint32_t code)
 359 {
 360     SCLPDeviceClass *sclp_c = SCLP_GET_CLASS(sclp);
 361     SCLPEventFacility *ef = sclp->event_facility;
 362     SCLPEventFacilityClass *efc = EVENT_FACILITY_GET_CLASS(ef);
 363
 364     switch (code & SCLP_CMD_CODE_MASK) {
 365     case SCLP_CMDW_READ_SCP_INFO:
 366     case SCLP_CMDW_READ_SCP_INFO_FORCED:
 367         sclp_c->read_SCP_info(sclp, sccb);
 368         break;
 369     case SCLP_CMDW_READ_CPU_INFO:
 370         sclp_c->read_cpu_info(sclp, sccb);
 371         break;
 372     case SCLP_READ_STORAGE_ELEMENT_INFO:
 373         if (code & 0xff00) {
 374             sclp_c->read_storage_element1_info(sclp, sccb);
 375         } else {
 376             sclp_c->read_storage_element0_info(sclp, sccb);
 377         }
 378         break;
 379     case SCLP_ATTACH_STORAGE_ELEMENT:
 380         sclp_c->attach_storage_element(sclp, sccb, (code & 0xff00) >> 8);
 381         break;
 382     case SCLP_ASSIGN_STORAGE:
 383         sclp_c->assign_storage(sclp, sccb);
 384         break;
 385     case SCLP_UNASSIGN_STORAGE:
 386         sclp_c->unassign_storage(sclp, sccb);
 387         break;
 388     case SCLP_CMDW_CONFIGURE_PCI:
 389         s390_pci_sclp_configure(sccb);
 390         break;
 391     case SCLP_CMDW_DECONFIGURE_PCI:
 392         s390_pci_sclp_deconfigure(sccb);
 393         break;
 394     default:
 395         efc->command_handler(ef, sccb, code);
 396         break;
 397     }
 398 }
 399
 400 int sclp_service_call(CPUS390XState *env, uint64_t sccb, uint32_t code)
 401 {
 402     SCLPDevice *sclp = get_sclp_device();
 403     SCLPDeviceClass *sclp_c = SCLP_GET_CLASS(sclp);
 404     int r = 0;
 405     SCCB work_sccb;
 406
 407     hwaddr sccb_len = sizeof(SCCB);
 408
 409     /* first some basic checks on program checks */
 410     if (env->psw.mask & PSW_MASK_PSTATE) {
 411         r = -PGM_PRIVILEGED;
 412         goto out;
 413     }
 414     if (cpu_physical_memory_is_io(sccb)) {
 415         r = -PGM_ADDRESSING;
 416         goto out;
 417     }
 418     if ((sccb & ~0x1fffUL) == 0 || (sccb & ~0x1fffUL) == env->psa
 419         || (sccb & ~0x7ffffff8UL) != 0) {
 420         r = -PGM_SPECIFICATION;
 421         goto out;
 422     }
 423
 424     /*
 425      * we want to work on a private copy of the sccb, to prevent guests
 426      * from playing dirty tricks by modifying the memory content after
 427      * the host has checked the values
 428      */
 429     cpu_physical_memory_read(sccb, &work_sccb, sccb_len);
 430
 431     /* Valid sccb sizes */
 432     if (be16_to_cpu(work_sccb.h.length) < sizeof(SCCBHeader) ||
 433         be16_to_cpu(work_sccb.h.length) > SCCB_SIZE) {
 434         r = -PGM_SPECIFICATION;
 435         goto out;
 436     }
 437
 438     sclp_c->execute(sclp, &work_sccb, code);
 439
 440     cpu_physical_memory_write(sccb, &work_sccb,
 441                               be16_to_cpu(work_sccb.h.length));
 442
 443     sclp_c->service_interrupt(sclp, sccb);
 444
 445 out:
 446     return r;
 447 }
 448
 449 static void service_interrupt(SCLPDevice *sclp, uint32_t sccb)
 450 {
 451     SCLPEventFacility *ef = sclp->event_facility;
 452     SCLPEventFacilityClass *efc = EVENT_FACILITY_GET_CLASS(ef);
 453
 454     uint32_t param = sccb & ~3;
 455
 456     /* Indicate whether an event is still pending */
 457     param |= efc->event_pending(ef) ? 1 : 0;
 458
 459     if (!param) {
 460         /* No need to send an interrupt, there's nothing to be notified about */
 461         return;
 462     }
 463     s390_sclp_extint(param);
 464 }
 465
 466 void sclp_service_interrupt(uint32_t sccb)
 467 {
 468     SCLPDevice *sclp = get_sclp_device();
 469     SCLPDeviceClass *sclp_c = SCLP_GET_CLASS(sclp);
 470
 471     sclp_c->service_interrupt(sclp, sccb);
 472 }
 473
 474 /* qemu object creation and initialization functions */
 475
 476 void s390_sclp_init(void)
 477 {
 478     Object *new = object_new(TYPE_SCLP);
 479
 480     object_property_add_child(qdev_get_machine(), TYPE_SCLP, new,
 481                               NULL);
 482     object_unref(OBJECT(new));
 483     qdev_init_nofail(DEVICE(new));
 484 }
 485
 486 static void sclp_realize(DeviceState *dev, Error **errp)
 487 {
 488     MachineState *machine = MACHINE(qdev_get_machine());
 489     SCLPDevice *sclp = SCLP(dev);
 490     Error *err = NULL;
 491     uint64_t hw_limit;
 492     int ret;
 493
 494     object_property_set_bool(OBJECT(sclp->event_facility), true, "realized",
 495                              &err);
 496     if (err) {
 497         goto out;
 498     }
 499     /*
 500      * qdev_device_add searches the sysbus for TYPE_SCLP_EVENTS_BUS. As long
 501      * as we can't find a fitting bus via the qom tree, we have to add the
 502      * event facility to the sysbus, so e.g. a sclp console can be created.
 503      */
 504     qdev_set_parent_bus(DEVICE(sclp->event_facility), sysbus_get_default());
 505
 506     ret = s390_set_memory_limit(machine->maxram_size, &hw_limit);
 507     if (ret == -E2BIG) {
 508         error_setg(&err, "host supports a maximum of %" PRIu64 " GB",
 509                    hw_limit >> 30);
 510     } else if (ret) {
 511         error_setg(&err, "setting the guest size failed");
 512     }
 513
 514 out:
 515     error_propagate(errp, err);
 516 }
 517
 518 static void sclp_memory_init(SCLPDevice *sclp)
 519 {
 520     MachineState *machine = MACHINE(qdev_get_machine());
 521     ram_addr_t initial_mem = machine->ram_size;
 522     ram_addr_t max_mem = machine->maxram_size;
 523     ram_addr_t standby_mem = max_mem - initial_mem;
 524     ram_addr_t pad_mem = 0;
 525     int increment_size = 20;
 526
 527     /* The storage increment size is a multiple of 1M and is a power of 2.
 528      * The number of storage increments must be MAX_STORAGE_INCREMENTS or fewer.
 529      * The variable 'increment_size' is an exponent of 2 that can be
 530      * used to calculate the size (in bytes) of an increment. */
 531     while ((initial_mem >> increment_size) > MAX_STORAGE_INCREMENTS) {
 532         increment_size++;
 533     }
 534     if (machine->ram_slots) {
 535         while ((standby_mem >> increment_size) > MAX_STORAGE_INCREMENTS) {
 536             increment_size++;
 537         }
 538     }
 539     sclp->increment_size = increment_size;
 540
 541     /* The core and standby memory areas need to be aligned with
 542      * the increment size.  In effect, this can cause the
 543      * user-specified memory size to be rounded down to align
 544      * with the nearest increment boundary. */
 545     initial_mem = initial_mem >> increment_size << increment_size;
 546     standby_mem = standby_mem >> increment_size << increment_size;
 547
 548     /* If the size of ram is not on a MEM_SECTION_SIZE boundary,
 549        calculate the pad size necessary to force this boundary. */
 550     if (machine->ram_slots && standby_mem) {
 551         sclpMemoryHotplugDev *mhd = init_sclp_memory_hotplug_dev();
 552
 553         if (initial_mem % MEM_SECTION_SIZE) {
 554             pad_mem = MEM_SECTION_SIZE - initial_mem % MEM_SECTION_SIZE;
 555         }
 556         mhd->increment_size = increment_size;
 557         mhd->pad_size = pad_mem;
 558         mhd->standby_mem_size = standby_mem;
 559     }
 560     machine->ram_size = initial_mem;
 561     machine->maxram_size = initial_mem + pad_mem + standby_mem;
 562     /* let's propagate the changed ram size into the global variable. */
 563     ram_size = initial_mem;
 564 }
 565
 566 static void sclp_init(Object *obj)
 567 {
 568     SCLPDevice *sclp = SCLP(obj);
 569     Object *new;
 570
 571     new = object_new(TYPE_SCLP_EVENT_FACILITY);
 572     object_property_add_child(obj, TYPE_SCLP_EVENT_FACILITY, new, NULL);
 573     object_unref(new);
 574     sclp->event_facility = EVENT_FACILITY(new);
 575
 576     sclp_memory_init(sclp);
 577 }
 578
 579 static void sclp_class_init(ObjectClass *oc, void *data)
 580 {
 581     SCLPDeviceClass *sc = SCLP_CLASS(oc);
 582     DeviceClass *dc = DEVICE_CLASS(oc);
 583
 584     dc->desc = "SCLP (Service-Call Logical Processor)";
 585     dc->realize = sclp_realize;
 586     dc->hotpluggable = false;
 587     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
 588
 589     sc->read_SCP_info = read_SCP_info;
 590     sc->read_storage_element0_info = read_storage_element0_info;
 591     sc->read_storage_element1_info = read_storage_element1_info;
 592     sc->attach_storage_element = attach_storage_element;
 593     sc->assign_storage = assign_storage;
 594     sc->unassign_storage = unassign_storage;
 595     sc->read_cpu_info = sclp_read_cpu_info;
 596     sc->execute = sclp_execute;
 597     sc->service_interrupt = service_interrupt;
 598 }
 599
 600 static TypeInfo sclp_info = {
 601     .name = TYPE_SCLP,
 602     .parent = TYPE_DEVICE,
 603     .instance_init = sclp_init,
 604     .instance_size = sizeof(SCLPDevice),
 605     .class_init = sclp_class_init,
 606     .class_size = sizeof(SCLPDeviceClass),
 607 };
 608
 609 sclpMemoryHotplugDev *init_sclp_memory_hotplug_dev(void)
 610 {
 611     DeviceState *dev;
 612     dev = qdev_create(NULL, TYPE_SCLP_MEMORY_HOTPLUG_DEV);
 613     object_property_add_child(qdev_get_machine(),
 614                               TYPE_SCLP_MEMORY_HOTPLUG_DEV,
 615                               OBJECT(dev), NULL);
 616     qdev_init_nofail(dev);
 617     return SCLP_MEMORY_HOTPLUG_DEV(object_resolve_path(
 618                                    TYPE_SCLP_MEMORY_HOTPLUG_DEV, NULL));
 619 }
 620
 621 sclpMemoryHotplugDev *get_sclp_memory_hotplug_dev(void)
 622 {
 623     return SCLP_MEMORY_HOTPLUG_DEV(object_resolve_path(
 624                                    TYPE_SCLP_MEMORY_HOTPLUG_DEV, NULL));
 625 }
 626
 627 static void sclp_memory_hotplug_dev_class_init(ObjectClass *klass,
 628                                                void *data)
 629 {
 630     DeviceClass *dc = DEVICE_CLASS(klass);
 631
 632     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
 633 }
 634
 635 static TypeInfo sclp_memory_hotplug_dev_info = {
 636     .name = TYPE_SCLP_MEMORY_HOTPLUG_DEV,
 637     .parent = TYPE_SYS_BUS_DEVICE,
 638     .instance_size = sizeof(sclpMemoryHotplugDev),
 639     .class_init = sclp_memory_hotplug_dev_class_init,
 640 };
 641
 642 static void register_types(void)
 643 {
 644     type_register_static(&sclp_memory_hotplug_dev_info);
 645     type_register_static(&sclp_info);
 646 }
 647 type_init(register_types);