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 <[email protected]>
   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     .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->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->use_acpi_hotplug_bridge) {
 281         acpi_pcihp_reset(&pm->acpi_pci_hotplug, true);
 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,
 295                   bool smm_enabled,
 296                   qemu_irq sci_irq)
 297 {
 298     memory_region_init(&pm->io, OBJECT(lpc_pci), "ich9-pm", ICH9_PMIO_SIZE);
 299     memory_region_set_enabled(&pm->io, false);
 300     memory_region_add_subregion(pci_address_space_io(lpc_pci),
 301                                 0, &pm->io);
 302
 303     acpi_pm_tmr_init(&pm->acpi_regs, ich9_pm_update_sci_fn, &pm->io);
 304     acpi_pm1_evt_init(&pm->acpi_regs, ich9_pm_update_sci_fn, &pm->io);
 305     acpi_pm1_cnt_init(&pm->acpi_regs, &pm->io, pm->disable_s3, pm->disable_s4,
 306                       pm->s4_val, !pm->smm_compat && !smm_enabled);
 307
 308     acpi_gpe_init(&pm->acpi_regs, ICH9_PMIO_GPE0_LEN);
 309     memory_region_init_io(&pm->io_gpe, OBJECT(lpc_pci), &ich9_gpe_ops, pm,
 310                           "acpi-gpe0", ICH9_PMIO_GPE0_LEN);
 311     memory_region_add_subregion(&pm->io, ICH9_PMIO_GPE0_STS, &pm->io_gpe);
 312
 313     memory_region_init_io(&pm->io_smi, OBJECT(lpc_pci), &ich9_smi_ops, pm,
 314                           "acpi-smi", 8);
 315     memory_region_add_subregion(&pm->io, ICH9_PMIO_SMI_EN, &pm->io_smi);
 316
 317     pm->smm_enabled = smm_enabled;
 318
 319     if (pm->enable_tco) {
 320         acpi_pm_tco_init(&pm->tco_regs, &pm->io);
 321     }
 322
 323     if (pm->use_acpi_hotplug_bridge) {
 324         acpi_pcihp_init(OBJECT(lpc_pci),
 325                         &pm->acpi_pci_hotplug,
 326                         pci_get_bus(lpc_pci),
 327                         pci_address_space_io(lpc_pci),
 328                         true,
 329                         ACPI_PCIHP_ADDR_ICH9);
 330
 331         qbus_set_hotplug_handler(BUS(pci_get_bus(lpc_pci)),
 332                                  OBJECT(lpc_pci));
 333     }
 334
 335     pm->irq = sci_irq;
 336     qemu_register_reset(pm_reset, pm);
 337     pm->powerdown_notifier.notify = pm_powerdown_req;
 338     qemu_register_powerdown_notifier(&pm->powerdown_notifier);
 339
 340     legacy_acpi_cpu_hotplug_init(pci_address_space_io(lpc_pci),
 341         OBJECT(lpc_pci), &pm->gpe_cpu, ICH9_CPU_HOTPLUG_IO_BASE);
 342
 343     if (pm->acpi_memory_hotplug.is_enabled) {
 344         acpi_memory_hotplug_init(pci_address_space_io(lpc_pci), OBJECT(lpc_pci),
 345                                  &pm->acpi_memory_hotplug,
 346                                  ACPI_MEMORY_HOTPLUG_BASE);
 347     }
 348 }
 349
 350 static void ich9_pm_get_gpe0_blk(Object *obj, Visitor *v, const char *name,
 351                                  void *opaque, Error **errp)
 352 {
 353     ICH9LPCPMRegs *pm = opaque;
 354     uint32_t value = pm->pm_io_base + ICH9_PMIO_GPE0_STS;
 355
 356     visit_type_uint32(v, name, &value, errp);
 357 }
 358
 359 static bool ich9_pm_get_memory_hotplug_support(Object *obj, Error **errp)
 360 {
 361     ICH9LPCState *s = ICH9_LPC_DEVICE(obj);
 362
 363     return s->pm.acpi_memory_hotplug.is_enabled;
 364 }
 365
 366 static void ich9_pm_set_memory_hotplug_support(Object *obj, bool value,
 367                                                Error **errp)
 368 {
 369     ICH9LPCState *s = ICH9_LPC_DEVICE(obj);
 370
 371     s->pm.acpi_memory_hotplug.is_enabled = value;
 372 }
 373
 374 static bool ich9_pm_get_cpu_hotplug_legacy(Object *obj, Error **errp)
 375 {
 376     ICH9LPCState *s = ICH9_LPC_DEVICE(obj);
 377
 378     return s->pm.cpu_hotplug_legacy;
 379 }
 380
 381 static void ich9_pm_set_cpu_hotplug_legacy(Object *obj, bool value,
 382                                            Error **errp)
 383 {
 384     ICH9LPCState *s = ICH9_LPC_DEVICE(obj);
 385
 386     assert(!value);
 387     if (s->pm.cpu_hotplug_legacy && value == false) {
 388         acpi_switch_to_modern_cphp(&s->pm.gpe_cpu, &s->pm.cpuhp_state,
 389                                    ICH9_CPU_HOTPLUG_IO_BASE);
 390     }
 391     s->pm.cpu_hotplug_legacy = value;
 392 }
 393
 394 static bool ich9_pm_get_enable_tco(Object *obj, Error **errp)
 395 {
 396     ICH9LPCState *s = ICH9_LPC_DEVICE(obj);
 397     return s->pm.enable_tco;
 398 }
 399
 400 static void ich9_pm_set_enable_tco(Object *obj, bool value, Error **errp)
 401 {
 402     ICH9LPCState *s = ICH9_LPC_DEVICE(obj);
 403     s->pm.enable_tco = value;
 404 }
 405
 406 static bool ich9_pm_get_acpi_pci_hotplug(Object *obj, Error **errp)
 407 {
 408     ICH9LPCState *s = ICH9_LPC_DEVICE(obj);
 409
 410     return s->pm.use_acpi_hotplug_bridge;
 411 }
 412
 413 static void ich9_pm_set_acpi_pci_hotplug(Object *obj, bool value, Error **errp)
 414 {
 415     ICH9LPCState *s = ICH9_LPC_DEVICE(obj);
 416
 417     s->pm.use_acpi_hotplug_bridge = value;
 418 }
 419
 420 static bool ich9_pm_get_keep_pci_slot_hpc(Object *obj, Error **errp)
 421 {
 422     ICH9LPCState *s = ICH9_LPC_DEVICE(obj);
 423
 424     return s->pm.keep_pci_slot_hpc;
 425 }
 426
 427 static void ich9_pm_set_keep_pci_slot_hpc(Object *obj, bool value, Error **errp)
 428 {
 429     ICH9LPCState *s = ICH9_LPC_DEVICE(obj);
 430
 431     s->pm.keep_pci_slot_hpc = value;
 432 }
 433
 434 void ich9_pm_add_properties(Object *obj, ICH9LPCPMRegs *pm)
 435 {
 436     static const uint32_t gpe0_len = ICH9_PMIO_GPE0_LEN;
 437     pm->acpi_memory_hotplug.is_enabled = true;
 438     pm->cpu_hotplug_legacy = true;
 439     pm->disable_s3 = 0;
 440     pm->disable_s4 = 0;
 441     pm->s4_val = 2;
 442     pm->use_acpi_hotplug_bridge = true;
 443     pm->keep_pci_slot_hpc = true;
 444     pm->enable_tco = true;
 445
 446     object_property_add_uint32_ptr(obj, ACPI_PM_PROP_PM_IO_BASE,
 447                                    &pm->pm_io_base, OBJ_PROP_FLAG_READ);
 448     object_property_add(obj, ACPI_PM_PROP_GPE0_BLK, "uint32",
 449                         ich9_pm_get_gpe0_blk,
 450                         NULL, NULL, pm);
 451     object_property_add_uint32_ptr(obj, ACPI_PM_PROP_GPE0_BLK_LEN,
 452                                    &gpe0_len, OBJ_PROP_FLAG_READ);
 453     object_property_add_bool(obj, "memory-hotplug-support",
 454                              ich9_pm_get_memory_hotplug_support,
 455                              ich9_pm_set_memory_hotplug_support);
 456     object_property_add_bool(obj, "cpu-hotplug-legacy",
 457                              ich9_pm_get_cpu_hotplug_legacy,
 458                              ich9_pm_set_cpu_hotplug_legacy);
 459     object_property_add_uint8_ptr(obj, ACPI_PM_PROP_S3_DISABLED,
 460                                   &pm->disable_s3, OBJ_PROP_FLAG_READWRITE);
 461     object_property_add_uint8_ptr(obj, ACPI_PM_PROP_S4_DISABLED,
 462                                   &pm->disable_s4, OBJ_PROP_FLAG_READWRITE);
 463     object_property_add_uint8_ptr(obj, ACPI_PM_PROP_S4_VAL,
 464                                   &pm->s4_val, OBJ_PROP_FLAG_READWRITE);
 465     object_property_add_bool(obj, ACPI_PM_PROP_TCO_ENABLED,
 466                              ich9_pm_get_enable_tco,
 467                              ich9_pm_set_enable_tco);
 468     object_property_add_bool(obj, ACPI_PM_PROP_ACPI_PCIHP_BRIDGE,
 469                              ich9_pm_get_acpi_pci_hotplug,
 470                              ich9_pm_set_acpi_pci_hotplug);
 471     object_property_add_bool(obj, "x-keep-pci-slot-hpc",
 472                              ich9_pm_get_keep_pci_slot_hpc,
 473                              ich9_pm_set_keep_pci_slot_hpc);
 474 }
 475
 476 void ich9_pm_device_pre_plug_cb(HotplugHandler *hotplug_dev, DeviceState *dev,
 477                                 Error **errp)
 478 {
 479     ICH9LPCState *lpc = ICH9_LPC_DEVICE(hotplug_dev);
 480
 481     if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
 482         acpi_pcihp_device_pre_plug_cb(hotplug_dev, dev, errp);
 483         return;
 484     }
 485
 486     if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM) &&
 487         !lpc->pm.acpi_memory_hotplug.is_enabled) {
 488         error_setg(errp,
 489                    "memory hotplug is not enabled: %s.memory-hotplug-support "
 490                    "is not set", object_get_typename(OBJECT(lpc)));
 491     } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
 492         uint64_t negotiated = lpc->smi_negotiated_features;
 493
 494         if (negotiated & BIT_ULL(ICH9_LPC_SMI_F_BROADCAST_BIT) &&
 495             !(negotiated & BIT_ULL(ICH9_LPC_SMI_F_CPU_HOTPLUG_BIT))) {
 496             error_setg(errp, "cpu hotplug with SMI wasn't enabled by firmware");
 497             error_append_hint(errp, "update machine type to newer than 5.1 "
 498                 "and firmware that suppors CPU hotplug with SMM");
 499         }
 500     }
 501 }
 502
 503 void ich9_pm_device_plug_cb(HotplugHandler *hotplug_dev, DeviceState *dev,
 504                             Error **errp)
 505 {
 506     ICH9LPCState *lpc = ICH9_LPC_DEVICE(hotplug_dev);
 507
 508     if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
 509         if (object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM)) {
 510             nvdimm_acpi_plug_cb(hotplug_dev, dev);
 511         } else {
 512             acpi_memory_plug_cb(hotplug_dev, &lpc->pm.acpi_memory_hotplug,
 513                                 dev, errp);
 514         }
 515     } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
 516         if (lpc->pm.cpu_hotplug_legacy) {
 517             legacy_acpi_cpu_plug_cb(hotplug_dev, &lpc->pm.gpe_cpu, dev, errp);
 518         } else {
 519             acpi_cpu_plug_cb(hotplug_dev, &lpc->pm.cpuhp_state, dev, errp);
 520         }
 521     } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
 522         acpi_pcihp_device_plug_cb(hotplug_dev, &lpc->pm.acpi_pci_hotplug,
 523                                   dev, errp);
 524     } else {
 525         error_setg(errp, "acpi: device plug request for not supported device"
 526                    " type: %s", object_get_typename(OBJECT(dev)));
 527     }
 528 }
 529
 530 void ich9_pm_device_unplug_request_cb(HotplugHandler *hotplug_dev,
 531                                       DeviceState *dev, Error **errp)
 532 {
 533     ICH9LPCState *lpc = ICH9_LPC_DEVICE(hotplug_dev);
 534
 535     if (lpc->pm.acpi_memory_hotplug.is_enabled &&
 536         object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
 537         acpi_memory_unplug_request_cb(hotplug_dev,
 538                                       &lpc->pm.acpi_memory_hotplug, dev,
 539                                       errp);
 540     } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU) &&
 541                !lpc->pm.cpu_hotplug_legacy) {
 542         uint64_t negotiated = lpc->smi_negotiated_features;
 543
 544         if (negotiated & BIT_ULL(ICH9_LPC_SMI_F_BROADCAST_BIT) &&
 545             !(negotiated & BIT_ULL(ICH9_LPC_SMI_F_CPU_HOT_UNPLUG_BIT))) {
 546             error_setg(errp, "cpu hot-unplug with SMI wasn't enabled "
 547                              "by firmware");
 548             error_append_hint(errp, "update machine type to a version having "
 549                                     "x-smi-cpu-hotunplug=on and firmware that "
 550                                     "supports CPU hot-unplug with SMM");
 551             return;
 552         }
 553
 554         acpi_cpu_unplug_request_cb(hotplug_dev, &lpc->pm.cpuhp_state,
 555                                    dev, errp);
 556     } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
 557         acpi_pcihp_device_unplug_request_cb(hotplug_dev,
 558                                             &lpc->pm.acpi_pci_hotplug,
 559                                             dev, errp);
 560     } else {
 561         error_setg(errp, "acpi: device unplug request for not supported device"
 562                    " type: %s", object_get_typename(OBJECT(dev)));
 563     }
 564 }
 565
 566 void ich9_pm_device_unplug_cb(HotplugHandler *hotplug_dev, DeviceState *dev,
 567                               Error **errp)
 568 {
 569     ICH9LPCState *lpc = ICH9_LPC_DEVICE(hotplug_dev);
 570
 571     if (lpc->pm.acpi_memory_hotplug.is_enabled &&
 572         object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
 573         acpi_memory_unplug_cb(&lpc->pm.acpi_memory_hotplug, dev, errp);
 574     } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU) &&
 575                !lpc->pm.cpu_hotplug_legacy) {
 576         acpi_cpu_unplug_cb(&lpc->pm.cpuhp_state, dev, errp);
 577     } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
 578         acpi_pcihp_device_unplug_cb(hotplug_dev, &lpc->pm.acpi_pci_hotplug,
 579                                     dev, errp);
 580     } else {
 581         error_setg(errp, "acpi: device unplug for not supported device"
 582                    " type: %s", object_get_typename(OBJECT(dev)));
 583     }
 584 }
 585
 586 void ich9_pm_ospm_status(AcpiDeviceIf *adev, ACPIOSTInfoList ***list)
 587 {
 588     ICH9LPCState *s = ICH9_LPC_DEVICE(adev);
 589
 590     acpi_memory_ospm_status(&s->pm.acpi_memory_hotplug, list);
 591     if (!s->pm.cpu_hotplug_legacy) {
 592         acpi_cpu_ospm_status(&s->pm.cpuhp_state, list);
 593     }
 594 }