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/ich9_tco.h"
  38
  39 #include "hw/southbridge/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     .needed = vmstate_test_use_memhp,
 167     .fields      = (VMStateField[]) {
 168         VMSTATE_MEMORY_HOTPLUG(acpi_memory_hotplug, ICH9LPCPMRegs),
 169         VMSTATE_END_OF_LIST()
 170     }
 171 };
 172
 173 static bool vmstate_test_use_tco(void *opaque)
 174 {
 175     ICH9LPCPMRegs *s = opaque;
 176     return s->enable_tco;
 177 }
 178
 179 static const VMStateDescription vmstate_tco_io_state = {
 180     .name = "ich9_pm/tco",
 181     .version_id = 1,
 182     .minimum_version_id = 1,
 183     .needed = vmstate_test_use_tco,
 184     .fields      = (VMStateField[]) {
 185         VMSTATE_STRUCT(tco_regs, ICH9LPCPMRegs, 1, vmstate_tco_io_sts,
 186                        TCOIORegs),
 187         VMSTATE_END_OF_LIST()
 188     }
 189 };
 190
 191 static bool vmstate_test_use_cpuhp(void *opaque)
 192 {
 193     ICH9LPCPMRegs *s = opaque;
 194     return !s->cpu_hotplug_legacy;
 195 }
 196
 197 static int vmstate_cpuhp_pre_load(void *opaque)
 198 {
 199     ICH9LPCPMRegs *s = opaque;
 200     Object *obj = OBJECT(s->gpe_cpu.device);
 201     object_property_set_bool(obj, "cpu-hotplug-legacy", false, &error_abort);
 202     return 0;
 203 }
 204
 205 static const VMStateDescription vmstate_cpuhp_state = {
 206     .name = "ich9_pm/cpuhp",
 207     .version_id = 1,
 208     .minimum_version_id = 1,
 209     .needed = vmstate_test_use_cpuhp,
 210     .pre_load = vmstate_cpuhp_pre_load,
 211     .fields      = (VMStateField[]) {
 212         VMSTATE_CPU_HOTPLUG(cpuhp_state, ICH9LPCPMRegs),
 213         VMSTATE_END_OF_LIST()
 214     }
 215 };
 216
 217 static bool vmstate_test_use_pcihp(void *opaque)
 218 {
 219     ICH9LPCPMRegs *s = opaque;
 220
 221     return s->acpi_pci_hotplug.use_acpi_hotplug_bridge;
 222 }
 223
 224 static const VMStateDescription vmstate_pcihp_state = {
 225     .name = "ich9_pm/pcihp",
 226     .version_id = 1,
 227     .minimum_version_id = 1,
 228     .needed = vmstate_test_use_pcihp,
 229     .fields      = (VMStateField[]) {
 230         VMSTATE_PCI_HOTPLUG(acpi_pci_hotplug,
 231                             ICH9LPCPMRegs,
 232                             NULL, NULL),
 233         VMSTATE_END_OF_LIST()
 234     }
 235 };
 236
 237 const VMStateDescription vmstate_ich9_pm = {
 238     .name = "ich9_pm",
 239     .version_id = 1,
 240     .minimum_version_id = 1,
 241     .post_load = ich9_pm_post_load,
 242     .fields = (VMStateField[]) {
 243         VMSTATE_UINT16(acpi_regs.pm1.evt.sts, ICH9LPCPMRegs),
 244         VMSTATE_UINT16(acpi_regs.pm1.evt.en, ICH9LPCPMRegs),
 245         VMSTATE_UINT16(acpi_regs.pm1.cnt.cnt, ICH9LPCPMRegs),
 246         VMSTATE_TIMER_PTR(acpi_regs.tmr.timer, ICH9LPCPMRegs),
 247         VMSTATE_INT64(acpi_regs.tmr.overflow_time, ICH9LPCPMRegs),
 248         VMSTATE_GPE_ARRAY(acpi_regs.gpe.sts, ICH9LPCPMRegs),
 249         VMSTATE_GPE_ARRAY(acpi_regs.gpe.en, ICH9LPCPMRegs),
 250         VMSTATE_UINT32(smi_en, ICH9LPCPMRegs),
 251         VMSTATE_UINT32(smi_sts, ICH9LPCPMRegs),
 252         VMSTATE_END_OF_LIST()
 253     },
 254     .subsections = (const VMStateDescription*[]) {
 255         &vmstate_memhp_state,
 256         &vmstate_tco_io_state,
 257         &vmstate_cpuhp_state,
 258         &vmstate_pcihp_state,
 259         NULL
 260     }
 261 };
 262
 263 static void pm_reset(void *opaque)
 264 {
 265     ICH9LPCPMRegs *pm = opaque;
 266     ich9_pm_iospace_update(pm, 0);
 267
 268     acpi_pm1_evt_reset(&pm->acpi_regs);
 269     acpi_pm1_cnt_reset(&pm->acpi_regs);
 270     acpi_pm_tmr_reset(&pm->acpi_regs);
 271     acpi_gpe_reset(&pm->acpi_regs);
 272
 273     pm->smi_en = 0;
 274     if (!pm->smm_enabled) {
 275         /* Mark SMM as already inited to prevent SMM from running. */
 276         pm->smi_en |= ICH9_PMIO_SMI_EN_APMC_EN;
 277     }
 278     pm->smi_en_wmask = ~0;
 279
 280     if (pm->acpi_pci_hotplug.use_acpi_hotplug_bridge) {
 281         acpi_pcihp_reset(&pm->acpi_pci_hotplug);
 282     }
 283
 284     acpi_update_sci(&pm->acpi_regs, pm->irq);
 285 }
 286
 287 static void pm_powerdown_req(Notifier *n, void *opaque)
 288 {
 289     ICH9LPCPMRegs *pm = container_of(n, ICH9LPCPMRegs, powerdown_notifier);
 290
 291     acpi_pm1_evt_power_down(&pm->acpi_regs);
 292 }
 293
 294 void ich9_pm_init(PCIDevice *lpc_pci, ICH9LPCPMRegs *pm, qemu_irq sci_irq)
 295 {
 296     memory_region_init(&pm->io, OBJECT(lpc_pci), "ich9-pm", ICH9_PMIO_SIZE);
 297     memory_region_set_enabled(&pm->io, false);
 298     memory_region_add_subregion(pci_address_space_io(lpc_pci),
 299                                 0, &pm->io);
 300
 301     acpi_pm_tmr_init(&pm->acpi_regs, ich9_pm_update_sci_fn, &pm->io);
 302     acpi_pm1_evt_init(&pm->acpi_regs, ich9_pm_update_sci_fn, &pm->io);
 303     acpi_pm1_cnt_init(&pm->acpi_regs, &pm->io, pm->disable_s3, pm->disable_s4,
 304                       pm->s4_val, !pm->smm_compat && !pm->smm_enabled);
 305
 306     acpi_gpe_init(&pm->acpi_regs, ICH9_PMIO_GPE0_LEN);
 307     memory_region_init_io(&pm->io_gpe, OBJECT(lpc_pci), &ich9_gpe_ops, pm,
 308                           "acpi-gpe0", ICH9_PMIO_GPE0_LEN);
 309     memory_region_add_subregion(&pm->io, ICH9_PMIO_GPE0_STS, &pm->io_gpe);
 310
 311     memory_region_init_io(&pm->io_smi, OBJECT(lpc_pci), &ich9_smi_ops, pm,
 312                           "acpi-smi", 8);
 313     memory_region_add_subregion(&pm->io, ICH9_PMIO_SMI_EN, &pm->io_smi);
 314
 315     if (pm->enable_tco) {
 316         acpi_pm_tco_init(&pm->tco_regs, &pm->io);
 317     }
 318
 319     if (pm->acpi_pci_hotplug.use_acpi_hotplug_bridge) {
 320         acpi_pcihp_init(OBJECT(lpc_pci),
 321                         &pm->acpi_pci_hotplug,
 322                         pci_get_bus(lpc_pci),
 323                         pci_address_space_io(lpc_pci),
 324                         ACPI_PCIHP_ADDR_ICH9);
 325
 326         qbus_set_hotplug_handler(BUS(pci_get_bus(lpc_pci)),
 327                                  OBJECT(lpc_pci));
 328     }
 329
 330     pm->irq = sci_irq;
 331     qemu_register_reset(pm_reset, pm);
 332     pm->powerdown_notifier.notify = pm_powerdown_req;
 333     qemu_register_powerdown_notifier(&pm->powerdown_notifier);
 334
 335     legacy_acpi_cpu_hotplug_init(pci_address_space_io(lpc_pci),
 336         OBJECT(lpc_pci), &pm->gpe_cpu, ICH9_CPU_HOTPLUG_IO_BASE);
 337
 338     if (pm->acpi_memory_hotplug.is_enabled) {
 339         acpi_memory_hotplug_init(pci_address_space_io(lpc_pci), OBJECT(lpc_pci),
 340                                  &pm->acpi_memory_hotplug,
 341                                  ACPI_MEMORY_HOTPLUG_BASE);
 342     }
 343 }
 344
 345 static void ich9_pm_get_gpe0_blk(Object *obj, Visitor *v, const char *name,
 346                                  void *opaque, Error **errp)
 347 {
 348     ICH9LPCPMRegs *pm = opaque;
 349     uint32_t value = pm->pm_io_base + ICH9_PMIO_GPE0_STS;
 350
 351     visit_type_uint32(v, name, &value, errp);
 352 }
 353
 354 static bool ich9_pm_get_memory_hotplug_support(Object *obj, Error **errp)
 355 {
 356     ICH9LPCState *s = ICH9_LPC_DEVICE(obj);
 357
 358     return s->pm.acpi_memory_hotplug.is_enabled;
 359 }
 360
 361 static void ich9_pm_set_memory_hotplug_support(Object *obj, bool value,
 362                                                Error **errp)
 363 {
 364     ICH9LPCState *s = ICH9_LPC_DEVICE(obj);
 365
 366     s->pm.acpi_memory_hotplug.is_enabled = value;
 367 }
 368
 369 static bool ich9_pm_get_cpu_hotplug_legacy(Object *obj, Error **errp)
 370 {
 371     ICH9LPCState *s = ICH9_LPC_DEVICE(obj);
 372
 373     return s->pm.cpu_hotplug_legacy;
 374 }
 375
 376 static void ich9_pm_set_cpu_hotplug_legacy(Object *obj, bool value,
 377                                            Error **errp)
 378 {
 379     ICH9LPCState *s = ICH9_LPC_DEVICE(obj);
 380
 381     assert(!value);
 382     if (s->pm.cpu_hotplug_legacy && value == false) {
 383         acpi_switch_to_modern_cphp(&s->pm.gpe_cpu, &s->pm.cpuhp_state,
 384                                    ICH9_CPU_HOTPLUG_IO_BASE);
 385     }
 386     s->pm.cpu_hotplug_legacy = value;
 387 }
 388
 389 static bool ich9_pm_get_enable_tco(Object *obj, Error **errp)
 390 {
 391     ICH9LPCState *s = ICH9_LPC_DEVICE(obj);
 392     return s->pm.enable_tco;
 393 }
 394
 395 static void ich9_pm_set_enable_tco(Object *obj, bool value, Error **errp)
 396 {
 397     ICH9LPCState *s = ICH9_LPC_DEVICE(obj);
 398     s->pm.enable_tco = value;
 399 }
 400
 401 static bool ich9_pm_get_acpi_pci_hotplug(Object *obj, Error **errp)
 402 {
 403     ICH9LPCState *s = ICH9_LPC_DEVICE(obj);
 404
 405     return s->pm.acpi_pci_hotplug.use_acpi_hotplug_bridge;
 406 }
 407
 408 static void ich9_pm_set_acpi_pci_hotplug(Object *obj, bool value, Error **errp)
 409 {
 410     ICH9LPCState *s = ICH9_LPC_DEVICE(obj);
 411
 412     s->pm.acpi_pci_hotplug.use_acpi_hotplug_bridge = value;
 413 }
 414
 415 static bool ich9_pm_get_keep_pci_slot_hpc(Object *obj, Error **errp)
 416 {
 417     ICH9LPCState *s = ICH9_LPC_DEVICE(obj);
 418
 419     return s->pm.keep_pci_slot_hpc;
 420 }
 421
 422 static void ich9_pm_set_keep_pci_slot_hpc(Object *obj, bool value, Error **errp)
 423 {
 424     ICH9LPCState *s = ICH9_LPC_DEVICE(obj);
 425
 426     s->pm.keep_pci_slot_hpc = value;
 427 }
 428
 429 void ich9_pm_add_properties(Object *obj, ICH9LPCPMRegs *pm)
 430 {
 431     static const uint32_t gpe0_len = ICH9_PMIO_GPE0_LEN;
 432     pm->acpi_memory_hotplug.is_enabled = true;
 433     pm->cpu_hotplug_legacy = true;
 434     pm->disable_s3 = 0;
 435     pm->disable_s4 = 0;
 436     pm->s4_val = 2;
 437     pm->acpi_pci_hotplug.use_acpi_hotplug_bridge = true;
 438     pm->keep_pci_slot_hpc = true;
 439     pm->enable_tco = true;
 440
 441     object_property_add_uint32_ptr(obj, ACPI_PM_PROP_PM_IO_BASE,
 442                                    &pm->pm_io_base, OBJ_PROP_FLAG_READ);
 443     object_property_add(obj, ACPI_PM_PROP_GPE0_BLK, "uint32",
 444                         ich9_pm_get_gpe0_blk,
 445                         NULL, NULL, pm);
 446     object_property_add_uint32_ptr(obj, ACPI_PM_PROP_GPE0_BLK_LEN,
 447                                    &gpe0_len, OBJ_PROP_FLAG_READ);
 448     object_property_add_bool(obj, "memory-hotplug-support",
 449                              ich9_pm_get_memory_hotplug_support,
 450                              ich9_pm_set_memory_hotplug_support);
 451     object_property_add_bool(obj, "cpu-hotplug-legacy",
 452                              ich9_pm_get_cpu_hotplug_legacy,
 453                              ich9_pm_set_cpu_hotplug_legacy);
 454     object_property_add_uint8_ptr(obj, ACPI_PM_PROP_S3_DISABLED,
 455                                   &pm->disable_s3, OBJ_PROP_FLAG_READWRITE);
 456     object_property_add_uint8_ptr(obj, ACPI_PM_PROP_S4_DISABLED,
 457                                   &pm->disable_s4, OBJ_PROP_FLAG_READWRITE);
 458     object_property_add_uint8_ptr(obj, ACPI_PM_PROP_S4_VAL,
 459                                   &pm->s4_val, OBJ_PROP_FLAG_READWRITE);
 460     object_property_add_bool(obj, ACPI_PM_PROP_TCO_ENABLED,
 461                              ich9_pm_get_enable_tco,
 462                              ich9_pm_set_enable_tco);
 463     object_property_add_bool(obj, ACPI_PM_PROP_ACPI_PCIHP_BRIDGE,
 464                              ich9_pm_get_acpi_pci_hotplug,
 465                              ich9_pm_set_acpi_pci_hotplug);
 466     object_property_add_bool(obj, "x-keep-pci-slot-hpc",
 467                              ich9_pm_get_keep_pci_slot_hpc,
 468                              ich9_pm_set_keep_pci_slot_hpc);
 469 }
 470
 471 void ich9_pm_device_pre_plug_cb(HotplugHandler *hotplug_dev, DeviceState *dev,
 472                                 Error **errp)
 473 {
 474     ICH9LPCState *lpc = ICH9_LPC_DEVICE(hotplug_dev);
 475
 476     if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
 477         acpi_pcihp_device_pre_plug_cb(hotplug_dev, dev, errp);
 478         return;
 479     }
 480
 481     if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM) &&
 482         !lpc->pm.acpi_memory_hotplug.is_enabled) {
 483         error_setg(errp,
 484                    "memory hotplug is not enabled: %s.memory-hotplug-support "
 485                    "is not set", object_get_typename(OBJECT(lpc)));
 486     } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
 487         uint64_t negotiated = lpc->smi_negotiated_features;
 488
 489         if (negotiated & BIT_ULL(ICH9_LPC_SMI_F_BROADCAST_BIT) &&
 490             !(negotiated & BIT_ULL(ICH9_LPC_SMI_F_CPU_HOTPLUG_BIT))) {
 491             error_setg(errp, "cpu hotplug with SMI wasn't enabled by firmware");
 492             error_append_hint(errp, "update machine type to newer than 5.1 "
 493                 "and firmware that suppors CPU hotplug with SMM");
 494         }
 495     }
 496 }
 497
 498 void ich9_pm_device_plug_cb(HotplugHandler *hotplug_dev, DeviceState *dev,
 499                             Error **errp)
 500 {
 501     ICH9LPCState *lpc = ICH9_LPC_DEVICE(hotplug_dev);
 502
 503     if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
 504         if (object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM)) {
 505             nvdimm_acpi_plug_cb(hotplug_dev, dev);
 506         } else {
 507             acpi_memory_plug_cb(hotplug_dev, &lpc->pm.acpi_memory_hotplug,
 508                                 dev, errp);
 509         }
 510     } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
 511         if (lpc->pm.cpu_hotplug_legacy) {
 512             legacy_acpi_cpu_plug_cb(hotplug_dev, &lpc->pm.gpe_cpu, dev, errp);
 513         } else {
 514             acpi_cpu_plug_cb(hotplug_dev, &lpc->pm.cpuhp_state, dev, errp);
 515         }
 516     } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
 517         acpi_pcihp_device_plug_cb(hotplug_dev, &lpc->pm.acpi_pci_hotplug,
 518                                   dev, errp);
 519     } else {
 520         error_setg(errp, "acpi: device plug request for not supported device"
 521                    " type: %s", object_get_typename(OBJECT(dev)));
 522     }
 523 }
 524
 525 void ich9_pm_device_unplug_request_cb(HotplugHandler *hotplug_dev,
 526                                       DeviceState *dev, Error **errp)
 527 {
 528     ICH9LPCState *lpc = ICH9_LPC_DEVICE(hotplug_dev);
 529
 530     if (lpc->pm.acpi_memory_hotplug.is_enabled &&
 531         object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
 532         acpi_memory_unplug_request_cb(hotplug_dev,
 533                                       &lpc->pm.acpi_memory_hotplug, dev,
 534                                       errp);
 535     } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU) &&
 536                !lpc->pm.cpu_hotplug_legacy) {
 537         uint64_t negotiated = lpc->smi_negotiated_features;
 538
 539         if (negotiated & BIT_ULL(ICH9_LPC_SMI_F_BROADCAST_BIT) &&
 540             !(negotiated & BIT_ULL(ICH9_LPC_SMI_F_CPU_HOT_UNPLUG_BIT))) {
 541             error_setg(errp, "cpu hot-unplug with SMI wasn't enabled "
 542                              "by firmware");
 543             error_append_hint(errp, "update machine type to a version having "
 544                                     "x-smi-cpu-hotunplug=on and firmware that "
 545                                     "supports CPU hot-unplug with SMM");
 546             return;
 547         }
 548
 549         acpi_cpu_unplug_request_cb(hotplug_dev, &lpc->pm.cpuhp_state,
 550                                    dev, errp);
 551     } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
 552         acpi_pcihp_device_unplug_request_cb(hotplug_dev,
 553                                             &lpc->pm.acpi_pci_hotplug,
 554                                             dev, errp);
 555     } else {
 556         error_setg(errp, "acpi: device unplug request for not supported device"
 557                    " type: %s", object_get_typename(OBJECT(dev)));
 558     }
 559 }
 560
 561 void ich9_pm_device_unplug_cb(HotplugHandler *hotplug_dev, DeviceState *dev,
 562                               Error **errp)
 563 {
 564     ICH9LPCState *lpc = ICH9_LPC_DEVICE(hotplug_dev);
 565
 566     if (lpc->pm.acpi_memory_hotplug.is_enabled &&
 567         object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
 568         acpi_memory_unplug_cb(&lpc->pm.acpi_memory_hotplug, dev, errp);
 569     } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU) &&
 570                !lpc->pm.cpu_hotplug_legacy) {
 571         acpi_cpu_unplug_cb(&lpc->pm.cpuhp_state, dev, errp);
 572     } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
 573         acpi_pcihp_device_unplug_cb(hotplug_dev, &lpc->pm.acpi_pci_hotplug,
 574                                     dev, errp);
 575     } else {
 576         error_setg(errp, "acpi: device unplug for not supported device"
 577                    " type: %s", object_get_typename(OBJECT(dev)));
 578     }
 579 }
 580
 581 bool ich9_pm_is_hotpluggable_bus(HotplugHandler *hotplug_dev, BusState *bus)
 582 {
 583     ICH9LPCState *lpc = ICH9_LPC_DEVICE(hotplug_dev);
 584     return acpi_pcihp_is_hotpluggbale_bus(&lpc->pm.acpi_pci_hotplug, bus);
 585 }
 586
 587 void ich9_pm_ospm_status(AcpiDeviceIf *adev, ACPIOSTInfoList ***list)
 588 {
 589     ICH9LPCState *s = ICH9_LPC_DEVICE(adev);
 590
 591     acpi_memory_ospm_status(&s->pm.acpi_memory_hotplug, list);
 592     if (!s->pm.cpu_hotplug_legacy) {
 593         acpi_cpu_ospm_status(&s->pm.cpuhp_state, list);
 594     }
 595 }