hw/acpi/ich9.c

   1 /*
   2  * ACPI implementation
   3  *
   4  * Copyright (c) 2006 Fabrice Bellard
   5  * Copyright (c) 2009 Isaku Yamahata <yamahata at valinux co jp>
   6  *                    VA Linux Systems Japan K.K.
   7  * Copyright (C) 2012 Jason Baron <jbaron@redhat.com>
   8  *
   9  * This is based on acpi.c.
  10  *
  11  * This library is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU Lesser General Public
  13  * License version 2.1 as published by the Free Software Foundation.
  14  *
  15  * This library is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * Lesser General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU Lesser General Public
  21  * License along with this library; if not, see <http://www.gnu.org/licenses/>
  22  *
  23  * Contributions after 2012-01-13 are licensed under the terms of the
  24  * GNU GPL, version 2 or (at your option) any later version.
  25  */
  26
  27 #include "qemu/osdep.h"
  28 #include "qapi/error.h"
  29 #include "qapi/visitor.h"
  30 #include "hw/pci/pci.h"
  31 #include "migration/vmstate.h"
  32 #include "qemu/timer.h"
  33 #include "hw/core/cpu.h"
  34 #include "sysemu/reset.h"
  35 #include "sysemu/runstate.h"
  36 #include "hw/acpi/acpi.h"
  37 #include "hw/acpi/tco.h"
  38
  39 #include "hw/i386/ich9.h"
  40 #include "hw/mem/pc-dimm.h"
  41 #include "hw/mem/nvdimm.h"
  42
  43 //#define DEBUG
  44
  45 #ifdef DEBUG
  46 #define ICH9_DEBUG(fmt, ...) \
  47 do { printf("%s "fmt, __func__, ## __VA_ARGS__); } while (0)
  48 #else
  49 #define ICH9_DEBUG(fmt, ...)    do { } while (0)
  50 #endif
  51
  52 static void ich9_pm_update_sci_fn(ACPIREGS *regs)
  53 {
  54     ICH9LPCPMRegs *pm = container_of(regs, ICH9LPCPMRegs, acpi_regs);
  55     acpi_update_sci(&pm->acpi_regs, pm->irq);
  56 }
  57
  58 static uint64_t ich9_gpe_readb(void *opaque, hwaddr addr, unsigned width)
  59 {
  60     ICH9LPCPMRegs *pm = opaque;
  61     return acpi_gpe_ioport_readb(&pm->acpi_regs, addr);
  62 }
  63
  64 static void ich9_gpe_writeb(void *opaque, hwaddr addr, uint64_t val,
  65                             unsigned width)
  66 {
  67     ICH9LPCPMRegs *pm = opaque;
  68     acpi_gpe_ioport_writeb(&pm->acpi_regs, addr, val);
  69     acpi_update_sci(&pm->acpi_regs, pm->irq);
  70 }
  71
  72 static const MemoryRegionOps ich9_gpe_ops = {
  73     .read = ich9_gpe_readb,
  74     .write = ich9_gpe_writeb,
  75     .valid.min_access_size = 1,
  76     .valid.max_access_size = 4,
  77     .impl.min_access_size = 1,
  78     .impl.max_access_size = 1,
  79     .endianness = DEVICE_LITTLE_ENDIAN,
  80 };
  81
  82 static uint64_t ich9_smi_readl(void *opaque, hwaddr addr, unsigned width)
  83 {
  84     ICH9LPCPMRegs *pm = opaque;
  85     switch (addr) {
  86     case 0:
  87         return pm->smi_en;
  88     case 4:
  89         return pm->smi_sts;
  90     default:
  91         return 0;
  92     }
  93 }
  94
  95 static void ich9_smi_writel(void *opaque, hwaddr addr, uint64_t val,
  96                             unsigned width)
  97 {
  98     ICH9LPCPMRegs *pm = opaque;
  99     TCOIORegs *tr = &pm->tco_regs;
 100     uint64_t tco_en;
 101
 102     switch (addr) {
 103     case 0:
 104         tco_en = pm->smi_en & ICH9_PMIO_SMI_EN_TCO_EN;
 105         /* once TCO_LOCK bit is set, TCO_EN bit cannot be overwritten */
 106         if (tr->tco.cnt1 & TCO_LOCK) {
 107             val = (val & ~ICH9_PMIO_SMI_EN_TCO_EN) | tco_en;
 108         }
 109         pm->smi_en &= ~pm->smi_en_wmask;
 110         pm->smi_en |= (val & pm->smi_en_wmask);
 111         break;
 112     }
 113 }
 114
 115 static const MemoryRegionOps ich9_smi_ops = {
 116     .read = ich9_smi_readl,
 117     .write = ich9_smi_writel,
 118     .valid.min_access_size = 4,
 119     .valid.max_access_size = 4,
 120     .endianness = DEVICE_LITTLE_ENDIAN,
 121 };
 122
 123 void ich9_pm_iospace_update(ICH9LPCPMRegs *pm, uint32_t pm_io_base)
 124 {
 125     ICH9_DEBUG("to 0x%x\n", pm_io_base);
 126
 127     assert((pm_io_base & ICH9_PMIO_MASK) == 0);
 128
 129     pm->pm_io_base = pm_io_base;
 130     memory_region_transaction_begin();
 131     memory_region_set_enabled(&pm->io, pm->pm_io_base != 0);
 132     memory_region_set_address(&pm->io, pm->pm_io_base);
 133     memory_region_transaction_commit();
 134 }
 135
 136 static int ich9_pm_post_load(void *opaque, int version_id)
 137 {
 138     ICH9LPCPMRegs *pm = opaque;
 139     uint32_t pm_io_base = pm->pm_io_base;
 140     pm->pm_io_base = 0;
 141     ich9_pm_iospace_update(pm, pm_io_base);
 142     return 0;
 143 }
 144
 145 #define VMSTATE_GPE_ARRAY(_field, _state)                            \
 146  {                                                                   \
 147      .name       = (stringify(_field)),                              \
 148      .version_id = 0,                                                \
 149      .num        = ICH9_PMIO_GPE0_LEN,                               \
 150      .info       = &vmstate_info_uint8,                              \
 151      .size       = sizeof(uint8_t),                                  \
 152      .flags      = VMS_ARRAY | VMS_POINTER,                          \
 153      .offset     = vmstate_offset_pointer(_state, _field, uint8_t),  \
 154  }
 155
 156 static bool vmstate_test_use_memhp(void *opaque)
 157 {
 158     ICH9LPCPMRegs *s = opaque;
 159     return s->acpi_memory_hotplug.is_enabled;
 160 }
 161
 162 static const VMStateDescription vmstate_memhp_state = {
 163     .name = "ich9_pm/memhp",
 164     .version_id = 1,
 165     .minimum_version_id = 1,
 166     .minimum_version_id_old = 1,
 167     .needed = vmstate_test_use_memhp,
 168     .fields      = (VMStateField[]) {
 169         VMSTATE_MEMORY_HOTPLUG(acpi_memory_hotplug, ICH9LPCPMRegs),
 170         VMSTATE_END_OF_LIST()
 171     }
 172 };
 173
 174 static bool vmstate_test_use_tco(void *opaque)
 175 {
 176     ICH9LPCPMRegs *s = opaque;
 177     return s->enable_tco;
 178 }
 179
 180 static const VMStateDescription vmstate_tco_io_state = {
 181     .name = "ich9_pm/tco",
 182     .version_id = 1,
 183     .minimum_version_id = 1,
 184     .minimum_version_id_old = 1,
 185     .needed = vmstate_test_use_tco,
 186     .fields      = (VMStateField[]) {
 187         VMSTATE_STRUCT(tco_regs, ICH9LPCPMRegs, 1, vmstate_tco_io_sts,
 188                        TCOIORegs),
 189         VMSTATE_END_OF_LIST()
 190     }
 191 };
 192
 193 static bool vmstate_test_use_cpuhp(void *opaque)
 194 {
 195     ICH9LPCPMRegs *s = opaque;
 196     return !s->cpu_hotplug_legacy;
 197 }
 198
 199 static int vmstate_cpuhp_pre_load(void *opaque)
 200 {
 201     ICH9LPCPMRegs *s = opaque;
 202     Object *obj = OBJECT(s->gpe_cpu.device);
 203     object_property_set_bool(obj, "cpu-hotplug-legacy", false, &error_abort);
 204     return 0;
 205 }
 206
 207 static const VMStateDescription vmstate_cpuhp_state = {
 208     .name = "ich9_pm/cpuhp",
 209     .version_id = 1,
 210     .minimum_version_id = 1,
 211     .minimum_version_id_old = 1,
 212     .needed = vmstate_test_use_cpuhp,
 213     .pre_load = vmstate_cpuhp_pre_load,
 214     .fields      = (VMStateField[]) {
 215         VMSTATE_CPU_HOTPLUG(cpuhp_state, ICH9LPCPMRegs),
 216         VMSTATE_END_OF_LIST()
 217     }
 218 };
 219
 220 static bool vmstate_test_use_pcihp(void *opaque)
 221 {
 222     ICH9LPCPMRegs *s = opaque;
 223
 224     return s->use_acpi_hotplug_bridge;
 225 }
 226
 227 static const VMStateDescription vmstate_pcihp_state = {
 228     .name = "ich9_pm/pcihp",
 229     .version_id = 1,
 230     .minimum_version_id = 1,
 231     .needed = vmstate_test_use_pcihp,
 232     .fields      = (VMStateField[]) {
 233         VMSTATE_PCI_HOTPLUG(acpi_pci_hotplug,
 234                             ICH9LPCPMRegs,
 235                             NULL, NULL),
 236         VMSTATE_END_OF_LIST()
 237     }
 238 };
 239
 240 const VMStateDescription vmstate_ich9_pm = {
 241     .name = "ich9_pm",
 242     .version_id = 1,
 243     .minimum_version_id = 1,
 244     .post_load = ich9_pm_post_load,
 245     .fields = (VMStateField[]) {
 246         VMSTATE_UINT16(acpi_regs.pm1.evt.sts, ICH9LPCPMRegs),
 247         VMSTATE_UINT16(acpi_regs.pm1.evt.en, ICH9LPCPMRegs),
 248         VMSTATE_UINT16(acpi_regs.pm1.cnt.cnt, ICH9LPCPMRegs),
 249         VMSTATE_TIMER_PTR(acpi_regs.tmr.timer, ICH9LPCPMRegs),
 250         VMSTATE_INT64(acpi_regs.tmr.overflow_time, ICH9LPCPMRegs),
 251         VMSTATE_GPE_ARRAY(acpi_regs.gpe.sts, ICH9LPCPMRegs),
 252         VMSTATE_GPE_ARRAY(acpi_regs.gpe.en, ICH9LPCPMRegs),
 253         VMSTATE_UINT32(smi_en, ICH9LPCPMRegs),
 254         VMSTATE_UINT32(smi_sts, ICH9LPCPMRegs),
 255         VMSTATE_END_OF_LIST()
 256     },
 257     .subsections = (const VMStateDescription*[]) {
 258         &vmstate_memhp_state,
 259         &vmstate_tco_io_state,
 260         &vmstate_cpuhp_state,
 261         &vmstate_pcihp_state,
 262         NULL
 263     }
 264 };
 265
 266 static void pm_reset(void *opaque)
 267 {
 268     ICH9LPCPMRegs *pm = opaque;
 269     ich9_pm_iospace_update(pm, 0);
 270
 271     acpi_pm1_evt_reset(&pm->acpi_regs);
 272     acpi_pm1_cnt_reset(&pm->acpi_regs);
 273     acpi_pm_tmr_reset(&pm->acpi_regs);
 274     acpi_gpe_reset(&pm->acpi_regs);
 275
 276     pm->smi_en = 0;
 277     if (!pm->smm_enabled) {
 278         /* Mark SMM as already inited to prevent SMM from running. */
 279         pm->smi_en |= ICH9_PMIO_SMI_EN_APMC_EN;
 280     }
 281     pm->smi_en_wmask = ~0;
 282
 283     if (pm->use_acpi_hotplug_bridge) {
 284         acpi_pcihp_reset(&pm->acpi_pci_hotplug, true);
 285     }
 286
 287     acpi_update_sci(&pm->acpi_regs, pm->irq);
 288 }
 289
 290 static void pm_powerdown_req(Notifier *n, void *opaque)
 291 {
 292     ICH9LPCPMRegs *pm = container_of(n, ICH9LPCPMRegs, powerdown_notifier);
 293
 294     acpi_pm1_evt_power_down(&pm->acpi_regs);
 295 }
 296
 297 void ich9_pm_init(PCIDevice *lpc_pci, ICH9LPCPMRegs *pm,
 298                   bool smm_enabled,
 299                   qemu_irq sci_irq)
 300 {
 301     memory_region_init(&pm->io, OBJECT(lpc_pci), "ich9-pm", ICH9_PMIO_SIZE);
 302     memory_region_set_enabled(&pm->io, false);
 303     memory_region_add_subregion(pci_address_space_io(lpc_pci),
 304                                 0, &pm->io);
 305
 306     acpi_pm_tmr_init(&pm->acpi_regs, ich9_pm_update_sci_fn, &pm->io);
 307     acpi_pm1_evt_init(&pm->acpi_regs, ich9_pm_update_sci_fn, &pm->io);
 308     acpi_pm1_cnt_init(&pm->acpi_regs, &pm->io, pm->disable_s3, pm->disable_s4,
 309                       pm->s4_val, !pm->smm_compat && !smm_enabled);
 310
 311     acpi_gpe_init(&pm->acpi_regs, ICH9_PMIO_GPE0_LEN);
 312     memory_region_init_io(&pm->io_gpe, OBJECT(lpc_pci), &ich9_gpe_ops, pm,
 313                           "acpi-gpe0", ICH9_PMIO_GPE0_LEN);
 314     memory_region_add_subregion(&pm->io, ICH9_PMIO_GPE0_STS, &pm->io_gpe);
 315
 316     memory_region_init_io(&pm->io_smi, OBJECT(lpc_pci), &ich9_smi_ops, pm,
 317                           "acpi-smi", 8);
 318     memory_region_add_subregion(&pm->io, ICH9_PMIO_SMI_EN, &pm->io_smi);
 319
 320     pm->smm_enabled = smm_enabled;
 321
 322     pm->enable_tco = true;
 323     acpi_pm_tco_init(&pm->tco_regs, &pm->io);
 324
 325     if (pm->use_acpi_hotplug_bridge) {
 326         acpi_pcihp_init(OBJECT(lpc_pci),
 327                         &pm->acpi_pci_hotplug,
 328                         pci_get_bus(lpc_pci),
 329                         pci_address_space_io(lpc_pci),
 330                         true,
 331                         ACPI_PCIHP_ADDR_ICH9);
 332
 333         qbus_set_hotplug_handler(BUS(pci_get_bus(lpc_pci)),
 334                                  OBJECT(lpc_pci));
 335     }
 336
 337     pm->irq = sci_irq;
 338     qemu_register_reset(pm_reset, pm);
 339     pm->powerdown_notifier.notify = pm_powerdown_req;
 340     qemu_register_powerdown_notifier(&pm->powerdown_notifier);
 341
 342     legacy_acpi_cpu_hotplug_init(pci_address_space_io(lpc_pci),
 343         OBJECT(lpc_pci), &pm->gpe_cpu, ICH9_CPU_HOTPLUG_IO_BASE);
 344
 345     if (pm->acpi_memory_hotplug.is_enabled) {
 346         acpi_memory_hotplug_init(pci_address_space_io(lpc_pci), OBJECT(lpc_pci),
 347                                  &pm->acpi_memory_hotplug,
 348                                  ACPI_MEMORY_HOTPLUG_BASE);
 349     }
 350 }
 351
 352 static void ich9_pm_get_gpe0_blk(Object *obj, Visitor *v, const char *name,
 353                                  void *opaque, Error **errp)
 354 {
 355     ICH9LPCPMRegs *pm = opaque;
 356     uint32_t value = pm->pm_io_base + ICH9_PMIO_GPE0_STS;
 357
 358     visit_type_uint32(v, name, &value, errp);
 359 }
 360
 361 static bool ich9_pm_get_memory_hotplug_support(Object *obj, Error **errp)
 362 {
 363     ICH9LPCState *s = ICH9_LPC_DEVICE(obj);
 364
 365     return s->pm.acpi_memory_hotplug.is_enabled;
 366 }
 367
 368 static void ich9_pm_set_memory_hotplug_support(Object *obj, bool value,
 369                                                Error **errp)
 370 {
 371     ICH9LPCState *s = ICH9_LPC_DEVICE(obj);
 372
 373     s->pm.acpi_memory_hotplug.is_enabled = value;
 374 }
 375
 376 static bool ich9_pm_get_cpu_hotplug_legacy(Object *obj, Error **errp)
 377 {
 378     ICH9LPCState *s = ICH9_LPC_DEVICE(obj);
 379
 380     return s->pm.cpu_hotplug_legacy;
 381 }
 382
 383 static void ich9_pm_set_cpu_hotplug_legacy(Object *obj, bool value,
 384                                            Error **errp)
 385 {
 386     ICH9LPCState *s = ICH9_LPC_DEVICE(obj);
 387
 388     assert(!value);
 389     if (s->pm.cpu_hotplug_legacy && value == false) {
 390         acpi_switch_to_modern_cphp(&s->pm.gpe_cpu, &s->pm.cpuhp_state,
 391                                    ICH9_CPU_HOTPLUG_IO_BASE);
 392     }
 393     s->pm.cpu_hotplug_legacy = value;
 394 }
 395
 396 static bool ich9_pm_get_enable_tco(Object *obj, Error **errp)
 397 {
 398     ICH9LPCState *s = ICH9_LPC_DEVICE(obj);
 399     return s->pm.enable_tco;
 400 }
 401
 402 static void ich9_pm_set_enable_tco(Object *obj, bool value, Error **errp)
 403 {
 404     ICH9LPCState *s = ICH9_LPC_DEVICE(obj);
 405     s->pm.enable_tco = value;
 406 }
 407
 408 static bool ich9_pm_get_acpi_pci_hotplug(Object *obj, Error **errp)
 409 {
 410     ICH9LPCState *s = ICH9_LPC_DEVICE(obj);
 411
 412     return s->pm.use_acpi_hotplug_bridge;
 413 }
 414
 415 static void ich9_pm_set_acpi_pci_hotplug(Object *obj, bool value, Error **errp)
 416 {
 417     ICH9LPCState *s = ICH9_LPC_DEVICE(obj);
 418
 419     s->pm.use_acpi_hotplug_bridge = value;
 420 }
 421
 422 void ich9_pm_add_properties(Object *obj, ICH9LPCPMRegs *pm)
 423 {
 424     static const uint32_t gpe0_len = ICH9_PMIO_GPE0_LEN;
 425     pm->acpi_memory_hotplug.is_enabled = true;
 426     pm->cpu_hotplug_legacy = true;
 427     pm->disable_s3 = 0;
 428     pm->disable_s4 = 0;
 429     pm->s4_val = 2;
 430     pm->use_acpi_hotplug_bridge = true;
 431
 432     object_property_add_uint32_ptr(obj, ACPI_PM_PROP_PM_IO_BASE,
 433                                    &pm->pm_io_base, OBJ_PROP_FLAG_READ);
 434     object_property_add(obj, ACPI_PM_PROP_GPE0_BLK, "uint32",
 435                         ich9_pm_get_gpe0_blk,
 436                         NULL, NULL, pm);
 437     object_property_add_uint32_ptr(obj, ACPI_PM_PROP_GPE0_BLK_LEN,
 438                                    &gpe0_len, OBJ_PROP_FLAG_READ);
 439     object_property_add_bool(obj, "memory-hotplug-support",
 440                              ich9_pm_get_memory_hotplug_support,
 441                              ich9_pm_set_memory_hotplug_support);
 442     object_property_add_bool(obj, "cpu-hotplug-legacy",
 443                              ich9_pm_get_cpu_hotplug_legacy,
 444                              ich9_pm_set_cpu_hotplug_legacy);
 445     object_property_add_uint8_ptr(obj, ACPI_PM_PROP_S3_DISABLED,
 446                                   &pm->disable_s3, OBJ_PROP_FLAG_READWRITE);
 447     object_property_add_uint8_ptr(obj, ACPI_PM_PROP_S4_DISABLED,
 448                                   &pm->disable_s4, OBJ_PROP_FLAG_READWRITE);
 449     object_property_add_uint8_ptr(obj, ACPI_PM_PROP_S4_VAL,
 450                                   &pm->s4_val, OBJ_PROP_FLAG_READWRITE);
 451     object_property_add_bool(obj, ACPI_PM_PROP_TCO_ENABLED,
 452                              ich9_pm_get_enable_tco,
 453                              ich9_pm_set_enable_tco);
 454     object_property_add_bool(obj, ACPI_PM_PROP_ACPI_PCIHP_BRIDGE,
 455                              ich9_pm_get_acpi_pci_hotplug,
 456                              ich9_pm_set_acpi_pci_hotplug);
 457 }
 458
 459 void ich9_pm_device_pre_plug_cb(HotplugHandler *hotplug_dev, DeviceState *dev,
 460                                 Error **errp)
 461 {
 462     ICH9LPCState *lpc = ICH9_LPC_DEVICE(hotplug_dev);
 463
 464     if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
 465         acpi_pcihp_device_pre_plug_cb(hotplug_dev, dev, errp);
 466         return;
 467     }
 468
 469     if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM) &&
 470         !lpc->pm.acpi_memory_hotplug.is_enabled) {
 471         error_setg(errp,
 472                    "memory hotplug is not enabled: %s.memory-hotplug-support "
 473                    "is not set", object_get_typename(OBJECT(lpc)));
 474     } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
 475         uint64_t negotiated = lpc->smi_negotiated_features;
 476
 477         if (negotiated & BIT_ULL(ICH9_LPC_SMI_F_BROADCAST_BIT) &&
 478             !(negotiated & BIT_ULL(ICH9_LPC_SMI_F_CPU_HOTPLUG_BIT))) {
 479             error_setg(errp, "cpu hotplug with SMI wasn't enabled by firmware");
 480             error_append_hint(errp, "update machine type to newer than 5.1 "
 481                 "and firmware that suppors CPU hotplug with SMM");
 482         }
 483     }
 484 }
 485
 486 void ich9_pm_device_plug_cb(HotplugHandler *hotplug_dev, DeviceState *dev,
 487                             Error **errp)
 488 {
 489     ICH9LPCState *lpc = ICH9_LPC_DEVICE(hotplug_dev);
 490
 491     if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
 492         if (object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM)) {
 493             nvdimm_acpi_plug_cb(hotplug_dev, dev);
 494         } else {
 495             acpi_memory_plug_cb(hotplug_dev, &lpc->pm.acpi_memory_hotplug,
 496                                 dev, errp);
 497         }
 498     } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
 499         if (lpc->pm.cpu_hotplug_legacy) {
 500             legacy_acpi_cpu_plug_cb(hotplug_dev, &lpc->pm.gpe_cpu, dev, errp);
 501         } else {
 502             acpi_cpu_plug_cb(hotplug_dev, &lpc->pm.cpuhp_state, dev, errp);
 503         }
 504     } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
 505         acpi_pcihp_device_plug_cb(hotplug_dev, &lpc->pm.acpi_pci_hotplug,
 506                                   dev, errp);
 507     } else {
 508         error_setg(errp, "acpi: device plug request for not supported device"
 509                    " type: %s", object_get_typename(OBJECT(dev)));
 510     }
 511 }
 512
 513 void ich9_pm_device_unplug_request_cb(HotplugHandler *hotplug_dev,
 514                                       DeviceState *dev, Error **errp)
 515 {
 516     ICH9LPCState *lpc = ICH9_LPC_DEVICE(hotplug_dev);
 517
 518     if (lpc->pm.acpi_memory_hotplug.is_enabled &&
 519         object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
 520         acpi_memory_unplug_request_cb(hotplug_dev,
 521                                       &lpc->pm.acpi_memory_hotplug, dev,
 522                                       errp);
 523     } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU) &&
 524                !lpc->pm.cpu_hotplug_legacy) {
 525         uint64_t negotiated = lpc->smi_negotiated_features;
 526
 527         if (negotiated & BIT_ULL(ICH9_LPC_SMI_F_BROADCAST_BIT) &&
 528             !(negotiated & BIT_ULL(ICH9_LPC_SMI_F_CPU_HOT_UNPLUG_BIT))) {
 529             error_setg(errp, "cpu hot-unplug with SMI wasn't enabled "
 530                              "by firmware");
 531             error_append_hint(errp, "update machine type to a version having "
 532                                     "x-smi-cpu-hotunplug=on and firmware that "
 533                                     "supports CPU hot-unplug with SMM");
 534             return;
 535         }
 536
 537         acpi_cpu_unplug_request_cb(hotplug_dev, &lpc->pm.cpuhp_state,
 538                                    dev, errp);
 539     } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
 540         acpi_pcihp_device_unplug_request_cb(hotplug_dev,
 541                                             &lpc->pm.acpi_pci_hotplug,
 542                                             dev, errp);
 543     } else {
 544         error_setg(errp, "acpi: device unplug request for not supported device"
 545                    " type: %s", object_get_typename(OBJECT(dev)));
 546     }
 547 }
 548
 549 void ich9_pm_device_unplug_cb(HotplugHandler *hotplug_dev, DeviceState *dev,
 550                               Error **errp)
 551 {
 552     ICH9LPCState *lpc = ICH9_LPC_DEVICE(hotplug_dev);
 553
 554     if (lpc->pm.acpi_memory_hotplug.is_enabled &&
 555         object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
 556         acpi_memory_unplug_cb(&lpc->pm.acpi_memory_hotplug, dev, errp);
 557     } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU) &&
 558                !lpc->pm.cpu_hotplug_legacy) {
 559         acpi_cpu_unplug_cb(&lpc->pm.cpuhp_state, dev, errp);
 560     } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
 561         acpi_pcihp_device_unplug_cb(hotplug_dev, &lpc->pm.acpi_pci_hotplug,
 562                                     dev, errp);
 563     } else {
 564         error_setg(errp, "acpi: device unplug for not supported device"
 565                    " type: %s", object_get_typename(OBJECT(dev)));
 566     }
 567 }
 568
 569 void ich9_pm_ospm_status(AcpiDeviceIf *adev, ACPIOSTInfoList ***list)
 570 {
 571     ICH9LPCState *s = ICH9_LPC_DEVICE(adev);
 572
 573     acpi_memory_ospm_status(&s->pm.acpi_memory_hotplug, list);
 574     if (!s->pm.cpu_hotplug_legacy) {
 575         acpi_cpu_ospm_status(&s->pm.cpuhp_state, list);
 576     }
 577 }