1 /* 2 * ACPI implementation 3 * 4 * Copyright (c) 2006 Fabrice Bellard 5 * 6 * This library is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public 8 * License version 2.1 as published by the Free Software Foundation. 9 * 10 * This library is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * Lesser General Public License for more details. 14 * 15 * You should have received a copy of the GNU Lesser General Public 16 * License along with this library; if not, see <http://www.gnu.org/licenses/> 17 * 18 * Contributions after 2012-01-13 are licensed under the terms of the 19 * GNU GPL, version 2 or (at your option) any later version. 20 */ 21 22 #include "qemu/osdep.h" 23 #include "hw/i386/pc.h" 24 #include "hw/southbridge/piix.h" 25 #include "hw/irq.h" 26 #include "hw/isa/apm.h" 27 #include "hw/i2c/pm_smbus.h" 28 #include "hw/pci/pci.h" 29 #include "hw/qdev-properties.h" 30 #include "hw/acpi/acpi.h" 31 #include "sysemu/runstate.h" 32 #include "sysemu/sysemu.h" 33 #include "sysemu/xen.h" 34 #include "qapi/error.h" 35 #include "qemu/range.h" 36 #include "exec/address-spaces.h" 37 #include "hw/acpi/pcihp.h" 38 #include "hw/acpi/cpu_hotplug.h" 39 #include "hw/acpi/cpu.h" 40 #include "hw/hotplug.h" 41 #include "hw/mem/pc-dimm.h" 42 #include "hw/mem/nvdimm.h" 43 #include "hw/acpi/memory_hotplug.h" 44 #include "hw/acpi/acpi_dev_interface.h" 45 #include "migration/vmstate.h" 46 #include "hw/core/cpu.h" 47 #include "trace.h" 48 #include "qom/object.h" 49 50 #define GPE_BASE 0xafe0 51 #define GPE_LEN 4 52 53 struct pci_status { 54 uint32_t up; /* deprecated, maintained for migration compatibility */ 55 uint32_t down; 56 }; 57 58 struct PIIX4PMState { 59 /*< private >*/ 60 PCIDevice parent_obj; 61 /*< public >*/ 62 63 MemoryRegion io; 64 uint32_t io_base; 65 66 MemoryRegion io_gpe; 67 ACPIREGS ar; 68 69 APMState apm; 70 71 PMSMBus smb; 72 uint32_t smb_io_base; 73 74 qemu_irq irq; 75 qemu_irq smi_irq; 76 int smm_enabled; 77 bool smm_compat; 78 Notifier machine_ready; 79 Notifier powerdown_notifier; 80 81 AcpiPciHpState acpi_pci_hotplug; 82 bool use_acpi_hotplug_bridge; 83 bool use_acpi_root_pci_hotplug; 84 85 uint8_t disable_s3; 86 uint8_t disable_s4; 87 uint8_t s4_val; 88 89 bool cpu_hotplug_legacy; 90 AcpiCpuHotplug gpe_cpu; 91 CPUHotplugState cpuhp_state; 92 93 MemHotplugState acpi_memory_hotplug; 94 }; 95 96 OBJECT_DECLARE_SIMPLE_TYPE(PIIX4PMState, PIIX4_PM) 97 98 static void piix4_acpi_system_hot_add_init(MemoryRegion *parent, 99 PCIBus *bus, PIIX4PMState *s); 100 101 #define ACPI_ENABLE 0xf1 102 #define ACPI_DISABLE 0xf0 103 104 static void pm_tmr_timer(ACPIREGS *ar) 105 { 106 PIIX4PMState *s = container_of(ar, PIIX4PMState, ar); 107 acpi_update_sci(&s->ar, s->irq); 108 } 109 110 static void apm_ctrl_changed(uint32_t val, void *arg) 111 { 112 PIIX4PMState *s = arg; 113 PCIDevice *d = PCI_DEVICE(s); 114 115 /* ACPI specs 3.0, 4.7.2.5 */ 116 acpi_pm1_cnt_update(&s->ar, val == ACPI_ENABLE, val == ACPI_DISABLE); 117 if (val == ACPI_ENABLE || val == ACPI_DISABLE) { 118 return; 119 } 120 121 if (d->config[0x5b] & (1 << 1)) { 122 if (s->smi_irq) { 123 qemu_irq_raise(s->smi_irq); 124 } 125 } 126 } 127 128 static void pm_io_space_update(PIIX4PMState *s) 129 { 130 PCIDevice *d = PCI_DEVICE(s); 131 132 s->io_base = le32_to_cpu(*(uint32_t *)(d->config + 0x40)); 133 s->io_base &= 0xffc0; 134 135 memory_region_transaction_begin(); 136 memory_region_set_enabled(&s->io, d->config[0x80] & 1); 137 memory_region_set_address(&s->io, s->io_base); 138 memory_region_transaction_commit(); 139 } 140 141 static void smbus_io_space_update(PIIX4PMState *s) 142 { 143 PCIDevice *d = PCI_DEVICE(s); 144 145 s->smb_io_base = le32_to_cpu(*(uint32_t *)(d->config + 0x90)); 146 s->smb_io_base &= 0xffc0; 147 148 memory_region_transaction_begin(); 149 memory_region_set_enabled(&s->smb.io, d->config[0xd2] & 1); 150 memory_region_set_address(&s->smb.io, s->smb_io_base); 151 memory_region_transaction_commit(); 152 } 153 154 static void pm_write_config(PCIDevice *d, 155 uint32_t address, uint32_t val, int len) 156 { 157 pci_default_write_config(d, address, val, len); 158 if (range_covers_byte(address, len, 0x80) || 159 ranges_overlap(address, len, 0x40, 4)) { 160 pm_io_space_update((PIIX4PMState *)d); 161 } 162 if (range_covers_byte(address, len, 0xd2) || 163 ranges_overlap(address, len, 0x90, 4)) { 164 smbus_io_space_update((PIIX4PMState *)d); 165 } 166 } 167 168 static int vmstate_acpi_post_load(void *opaque, int version_id) 169 { 170 PIIX4PMState *s = opaque; 171 172 pm_io_space_update(s); 173 smbus_io_space_update(s); 174 return 0; 175 } 176 177 #define VMSTATE_GPE_ARRAY(_field, _state) \ 178 { \ 179 .name = (stringify(_field)), \ 180 .version_id = 0, \ 181 .info = &vmstate_info_uint16, \ 182 .size = sizeof(uint16_t), \ 183 .flags = VMS_SINGLE | VMS_POINTER, \ 184 .offset = vmstate_offset_pointer(_state, _field, uint8_t), \ 185 } 186 187 static const VMStateDescription vmstate_gpe = { 188 .name = "gpe", 189 .version_id = 1, 190 .minimum_version_id = 1, 191 .fields = (VMStateField[]) { 192 VMSTATE_GPE_ARRAY(sts, ACPIGPE), 193 VMSTATE_GPE_ARRAY(en, ACPIGPE), 194 VMSTATE_END_OF_LIST() 195 } 196 }; 197 198 static const VMStateDescription vmstate_pci_status = { 199 .name = "pci_status", 200 .version_id = 1, 201 .minimum_version_id = 1, 202 .fields = (VMStateField[]) { 203 VMSTATE_UINT32(up, struct AcpiPciHpPciStatus), 204 VMSTATE_UINT32(down, struct AcpiPciHpPciStatus), 205 VMSTATE_END_OF_LIST() 206 } 207 }; 208 209 static bool vmstate_test_use_acpi_hotplug_bridge(void *opaque, int version_id) 210 { 211 PIIX4PMState *s = opaque; 212 return s->use_acpi_hotplug_bridge; 213 } 214 215 static bool vmstate_test_no_use_acpi_hotplug_bridge(void *opaque, 216 int version_id) 217 { 218 PIIX4PMState *s = opaque; 219 return !s->use_acpi_hotplug_bridge; 220 } 221 222 static bool vmstate_test_use_memhp(void *opaque) 223 { 224 PIIX4PMState *s = opaque; 225 return s->acpi_memory_hotplug.is_enabled; 226 } 227 228 static const VMStateDescription vmstate_memhp_state = { 229 .name = "piix4_pm/memhp", 230 .version_id = 1, 231 .minimum_version_id = 1, 232 .minimum_version_id_old = 1, 233 .needed = vmstate_test_use_memhp, 234 .fields = (VMStateField[]) { 235 VMSTATE_MEMORY_HOTPLUG(acpi_memory_hotplug, PIIX4PMState), 236 VMSTATE_END_OF_LIST() 237 } 238 }; 239 240 static bool vmstate_test_use_cpuhp(void *opaque) 241 { 242 PIIX4PMState *s = opaque; 243 return !s->cpu_hotplug_legacy; 244 } 245 246 static int vmstate_cpuhp_pre_load(void *opaque) 247 { 248 Object *obj = OBJECT(opaque); 249 object_property_set_bool(obj, "cpu-hotplug-legacy", false, &error_abort); 250 return 0; 251 } 252 253 static const VMStateDescription vmstate_cpuhp_state = { 254 .name = "piix4_pm/cpuhp", 255 .version_id = 1, 256 .minimum_version_id = 1, 257 .minimum_version_id_old = 1, 258 .needed = vmstate_test_use_cpuhp, 259 .pre_load = vmstate_cpuhp_pre_load, 260 .fields = (VMStateField[]) { 261 VMSTATE_CPU_HOTPLUG(cpuhp_state, PIIX4PMState), 262 VMSTATE_END_OF_LIST() 263 } 264 }; 265 266 static bool piix4_vmstate_need_smbus(void *opaque, int version_id) 267 { 268 return pm_smbus_vmstate_needed(); 269 } 270 271 /* qemu-kvm 1.2 uses version 3 but advertised as 2 272 * To support incoming qemu-kvm 1.2 migration, change version_id 273 * and minimum_version_id to 2 below (which breaks migration from 274 * qemu 1.2). 275 * 276 */ 277 static const VMStateDescription vmstate_acpi = { 278 .name = "piix4_pm", 279 .version_id = 3, 280 .minimum_version_id = 3, 281 .post_load = vmstate_acpi_post_load, 282 .fields = (VMStateField[]) { 283 VMSTATE_PCI_DEVICE(parent_obj, PIIX4PMState), 284 VMSTATE_UINT16(ar.pm1.evt.sts, PIIX4PMState), 285 VMSTATE_UINT16(ar.pm1.evt.en, PIIX4PMState), 286 VMSTATE_UINT16(ar.pm1.cnt.cnt, PIIX4PMState), 287 VMSTATE_STRUCT(apm, PIIX4PMState, 0, vmstate_apm, APMState), 288 VMSTATE_STRUCT_TEST(smb, PIIX4PMState, piix4_vmstate_need_smbus, 3, 289 pmsmb_vmstate, PMSMBus), 290 VMSTATE_TIMER_PTR(ar.tmr.timer, PIIX4PMState), 291 VMSTATE_INT64(ar.tmr.overflow_time, PIIX4PMState), 292 VMSTATE_STRUCT(ar.gpe, PIIX4PMState, 2, vmstate_gpe, ACPIGPE), 293 VMSTATE_STRUCT_TEST( 294 acpi_pci_hotplug.acpi_pcihp_pci_status[ACPI_PCIHP_BSEL_DEFAULT], 295 PIIX4PMState, 296 vmstate_test_no_use_acpi_hotplug_bridge, 297 2, vmstate_pci_status, 298 struct AcpiPciHpPciStatus), 299 VMSTATE_PCI_HOTPLUG(acpi_pci_hotplug, PIIX4PMState, 300 vmstate_test_use_acpi_hotplug_bridge, 301 vmstate_acpi_pcihp_use_acpi_index), 302 VMSTATE_END_OF_LIST() 303 }, 304 .subsections = (const VMStateDescription*[]) { 305 &vmstate_memhp_state, 306 &vmstate_cpuhp_state, 307 NULL 308 } 309 }; 310 311 static void piix4_pm_reset(DeviceState *dev) 312 { 313 PIIX4PMState *s = PIIX4_PM(dev); 314 PCIDevice *d = PCI_DEVICE(s); 315 uint8_t *pci_conf = d->config; 316 317 pci_conf[0x58] = 0; 318 pci_conf[0x59] = 0; 319 pci_conf[0x5a] = 0; 320 pci_conf[0x5b] = 0; 321 322 pci_conf[0x40] = 0x01; /* PM io base read only bit */ 323 pci_conf[0x80] = 0; 324 325 if (!s->smm_enabled) { 326 /* Mark SMM as already inited (until KVM supports SMM). */ 327 pci_conf[0x5B] = 0x02; 328 } 329 pm_io_space_update(s); 330 acpi_pcihp_reset(&s->acpi_pci_hotplug, !s->use_acpi_root_pci_hotplug); 331 } 332 333 static void piix4_pm_powerdown_req(Notifier *n, void *opaque) 334 { 335 PIIX4PMState *s = container_of(n, PIIX4PMState, powerdown_notifier); 336 337 assert(s != NULL); 338 acpi_pm1_evt_power_down(&s->ar); 339 } 340 341 static void piix4_device_pre_plug_cb(HotplugHandler *hotplug_dev, 342 DeviceState *dev, Error **errp) 343 { 344 PIIX4PMState *s = PIIX4_PM(hotplug_dev); 345 346 if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) { 347 acpi_pcihp_device_pre_plug_cb(hotplug_dev, dev, errp); 348 } else if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { 349 if (!s->acpi_memory_hotplug.is_enabled) { 350 error_setg(errp, 351 "memory hotplug is not enabled: %s.memory-hotplug-support " 352 "is not set", object_get_typename(OBJECT(s))); 353 } 354 } else if ( 355 !object_dynamic_cast(OBJECT(dev), TYPE_CPU)) { 356 error_setg(errp, "acpi: device pre plug request for not supported" 357 " device type: %s", object_get_typename(OBJECT(dev))); 358 } 359 } 360 361 static void piix4_device_plug_cb(HotplugHandler *hotplug_dev, 362 DeviceState *dev, Error **errp) 363 { 364 PIIX4PMState *s = PIIX4_PM(hotplug_dev); 365 366 if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { 367 if (object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM)) { 368 nvdimm_acpi_plug_cb(hotplug_dev, dev); 369 } else { 370 acpi_memory_plug_cb(hotplug_dev, &s->acpi_memory_hotplug, 371 dev, errp); 372 } 373 } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) { 374 acpi_pcihp_device_plug_cb(hotplug_dev, &s->acpi_pci_hotplug, dev, errp); 375 } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) { 376 if (s->cpu_hotplug_legacy) { 377 legacy_acpi_cpu_plug_cb(hotplug_dev, &s->gpe_cpu, dev, errp); 378 } else { 379 acpi_cpu_plug_cb(hotplug_dev, &s->cpuhp_state, dev, errp); 380 } 381 } else { 382 g_assert_not_reached(); 383 } 384 } 385 386 static void piix4_device_unplug_request_cb(HotplugHandler *hotplug_dev, 387 DeviceState *dev, Error **errp) 388 { 389 PIIX4PMState *s = PIIX4_PM(hotplug_dev); 390 391 if (s->acpi_memory_hotplug.is_enabled && 392 object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { 393 acpi_memory_unplug_request_cb(hotplug_dev, &s->acpi_memory_hotplug, 394 dev, errp); 395 } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) { 396 acpi_pcihp_device_unplug_request_cb(hotplug_dev, &s->acpi_pci_hotplug, 397 dev, errp); 398 } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU) && 399 !s->cpu_hotplug_legacy) { 400 acpi_cpu_unplug_request_cb(hotplug_dev, &s->cpuhp_state, dev, errp); 401 } else { 402 error_setg(errp, "acpi: device unplug request for not supported device" 403 " type: %s", object_get_typename(OBJECT(dev))); 404 } 405 } 406 407 static void piix4_device_unplug_cb(HotplugHandler *hotplug_dev, 408 DeviceState *dev, Error **errp) 409 { 410 PIIX4PMState *s = PIIX4_PM(hotplug_dev); 411 412 if (s->acpi_memory_hotplug.is_enabled && 413 object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { 414 acpi_memory_unplug_cb(&s->acpi_memory_hotplug, dev, errp); 415 } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) { 416 acpi_pcihp_device_unplug_cb(hotplug_dev, &s->acpi_pci_hotplug, dev, 417 errp); 418 } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU) && 419 !s->cpu_hotplug_legacy) { 420 acpi_cpu_unplug_cb(&s->cpuhp_state, dev, errp); 421 } else { 422 error_setg(errp, "acpi: device unplug for not supported device" 423 " type: %s", object_get_typename(OBJECT(dev))); 424 } 425 } 426 427 static void piix4_pm_machine_ready(Notifier *n, void *opaque) 428 { 429 PIIX4PMState *s = container_of(n, PIIX4PMState, machine_ready); 430 PCIDevice *d = PCI_DEVICE(s); 431 MemoryRegion *io_as = pci_address_space_io(d); 432 uint8_t *pci_conf; 433 434 pci_conf = d->config; 435 pci_conf[0x5f] = 0x10 | 436 (memory_region_present(io_as, 0x378) ? 0x80 : 0); 437 pci_conf[0x63] = 0x60; 438 pci_conf[0x67] = (memory_region_present(io_as, 0x3f8) ? 0x08 : 0) | 439 (memory_region_present(io_as, 0x2f8) ? 0x90 : 0); 440 } 441 442 static void piix4_pm_add_properties(PIIX4PMState *s) 443 { 444 static const uint8_t acpi_enable_cmd = ACPI_ENABLE; 445 static const uint8_t acpi_disable_cmd = ACPI_DISABLE; 446 static const uint32_t gpe0_blk = GPE_BASE; 447 static const uint32_t gpe0_blk_len = GPE_LEN; 448 static const uint16_t sci_int = 9; 449 450 object_property_add_uint8_ptr(OBJECT(s), ACPI_PM_PROP_ACPI_ENABLE_CMD, 451 &acpi_enable_cmd, OBJ_PROP_FLAG_READ); 452 object_property_add_uint8_ptr(OBJECT(s), ACPI_PM_PROP_ACPI_DISABLE_CMD, 453 &acpi_disable_cmd, OBJ_PROP_FLAG_READ); 454 object_property_add_uint32_ptr(OBJECT(s), ACPI_PM_PROP_GPE0_BLK, 455 &gpe0_blk, OBJ_PROP_FLAG_READ); 456 object_property_add_uint32_ptr(OBJECT(s), ACPI_PM_PROP_GPE0_BLK_LEN, 457 &gpe0_blk_len, OBJ_PROP_FLAG_READ); 458 object_property_add_uint16_ptr(OBJECT(s), ACPI_PM_PROP_SCI_INT, 459 &sci_int, OBJ_PROP_FLAG_READ); 460 object_property_add_uint32_ptr(OBJECT(s), ACPI_PM_PROP_PM_IO_BASE, 461 &s->io_base, OBJ_PROP_FLAG_READ); 462 } 463 464 static void piix4_pm_realize(PCIDevice *dev, Error **errp) 465 { 466 PIIX4PMState *s = PIIX4_PM(dev); 467 uint8_t *pci_conf; 468 469 pci_conf = dev->config; 470 pci_conf[0x06] = 0x80; 471 pci_conf[0x07] = 0x02; 472 pci_conf[0x09] = 0x00; 473 pci_conf[0x3d] = 0x01; // interrupt pin 1 474 475 /* APM */ 476 apm_init(dev, &s->apm, apm_ctrl_changed, s); 477 478 if (!s->smm_enabled) { 479 /* Mark SMM as already inited to prevent SMM from running. KVM does not 480 * support SMM mode. */ 481 pci_conf[0x5B] = 0x02; 482 } 483 484 /* XXX: which specification is used ? The i82731AB has different 485 mappings */ 486 pci_conf[0x90] = s->smb_io_base | 1; 487 pci_conf[0x91] = s->smb_io_base >> 8; 488 pci_conf[0xd2] = 0x09; 489 pm_smbus_init(DEVICE(dev), &s->smb, true); 490 memory_region_set_enabled(&s->smb.io, pci_conf[0xd2] & 1); 491 memory_region_add_subregion(pci_address_space_io(dev), 492 s->smb_io_base, &s->smb.io); 493 494 memory_region_init(&s->io, OBJECT(s), "piix4-pm", 64); 495 memory_region_set_enabled(&s->io, false); 496 memory_region_add_subregion(pci_address_space_io(dev), 497 0, &s->io); 498 499 acpi_pm_tmr_init(&s->ar, pm_tmr_timer, &s->io); 500 acpi_pm1_evt_init(&s->ar, pm_tmr_timer, &s->io); 501 acpi_pm1_cnt_init(&s->ar, &s->io, s->disable_s3, s->disable_s4, s->s4_val, 502 !s->smm_compat && !s->smm_enabled); 503 acpi_gpe_init(&s->ar, GPE_LEN); 504 505 s->powerdown_notifier.notify = piix4_pm_powerdown_req; 506 qemu_register_powerdown_notifier(&s->powerdown_notifier); 507 508 s->machine_ready.notify = piix4_pm_machine_ready; 509 qemu_add_machine_init_done_notifier(&s->machine_ready); 510 511 piix4_acpi_system_hot_add_init(pci_address_space_io(dev), 512 pci_get_bus(dev), s); 513 qbus_set_hotplug_handler(BUS(pci_get_bus(dev)), OBJECT(s)); 514 515 piix4_pm_add_properties(s); 516 } 517 518 I2CBus *piix4_pm_init(PCIBus *bus, int devfn, uint32_t smb_io_base, 519 qemu_irq sci_irq, qemu_irq smi_irq, 520 int smm_enabled, DeviceState **piix4_pm) 521 { 522 PCIDevice *pci_dev; 523 DeviceState *dev; 524 PIIX4PMState *s; 525 526 pci_dev = pci_new(devfn, TYPE_PIIX4_PM); 527 dev = DEVICE(pci_dev); 528 qdev_prop_set_uint32(dev, "smb_io_base", smb_io_base); 529 if (piix4_pm) { 530 *piix4_pm = dev; 531 } 532 533 s = PIIX4_PM(dev); 534 s->irq = sci_irq; 535 s->smi_irq = smi_irq; 536 s->smm_enabled = smm_enabled; 537 if (xen_enabled()) { 538 s->use_acpi_hotplug_bridge = false; 539 } 540 541 pci_realize_and_unref(pci_dev, bus, &error_fatal); 542 543 return s->smb.smbus; 544 } 545 546 static uint64_t gpe_readb(void *opaque, hwaddr addr, unsigned width) 547 { 548 PIIX4PMState *s = opaque; 549 uint32_t val = acpi_gpe_ioport_readb(&s->ar, addr); 550 551 trace_piix4_gpe_readb(addr, width, val); 552 return val; 553 } 554 555 static void gpe_writeb(void *opaque, hwaddr addr, uint64_t val, 556 unsigned width) 557 { 558 PIIX4PMState *s = opaque; 559 560 trace_piix4_gpe_writeb(addr, width, val); 561 acpi_gpe_ioport_writeb(&s->ar, addr, val); 562 acpi_update_sci(&s->ar, s->irq); 563 } 564 565 static const MemoryRegionOps piix4_gpe_ops = { 566 .read = gpe_readb, 567 .write = gpe_writeb, 568 .valid.min_access_size = 1, 569 .valid.max_access_size = 4, 570 .impl.min_access_size = 1, 571 .impl.max_access_size = 1, 572 .endianness = DEVICE_LITTLE_ENDIAN, 573 }; 574 575 576 static bool piix4_get_cpu_hotplug_legacy(Object *obj, Error **errp) 577 { 578 PIIX4PMState *s = PIIX4_PM(obj); 579 580 return s->cpu_hotplug_legacy; 581 } 582 583 static void piix4_set_cpu_hotplug_legacy(Object *obj, bool value, Error **errp) 584 { 585 PIIX4PMState *s = PIIX4_PM(obj); 586 587 assert(!value); 588 if (s->cpu_hotplug_legacy && value == false) { 589 acpi_switch_to_modern_cphp(&s->gpe_cpu, &s->cpuhp_state, 590 PIIX4_CPU_HOTPLUG_IO_BASE); 591 } 592 s->cpu_hotplug_legacy = value; 593 } 594 595 static void piix4_acpi_system_hot_add_init(MemoryRegion *parent, 596 PCIBus *bus, PIIX4PMState *s) 597 { 598 memory_region_init_io(&s->io_gpe, OBJECT(s), &piix4_gpe_ops, s, 599 "acpi-gpe0", GPE_LEN); 600 memory_region_add_subregion(parent, GPE_BASE, &s->io_gpe); 601 602 if (s->use_acpi_hotplug_bridge || s->use_acpi_root_pci_hotplug) { 603 acpi_pcihp_init(OBJECT(s), &s->acpi_pci_hotplug, bus, parent, 604 s->use_acpi_hotplug_bridge); 605 } 606 607 s->cpu_hotplug_legacy = true; 608 object_property_add_bool(OBJECT(s), "cpu-hotplug-legacy", 609 piix4_get_cpu_hotplug_legacy, 610 piix4_set_cpu_hotplug_legacy); 611 legacy_acpi_cpu_hotplug_init(parent, OBJECT(s), &s->gpe_cpu, 612 PIIX4_CPU_HOTPLUG_IO_BASE); 613 614 if (s->acpi_memory_hotplug.is_enabled) { 615 acpi_memory_hotplug_init(parent, OBJECT(s), &s->acpi_memory_hotplug, 616 ACPI_MEMORY_HOTPLUG_BASE); 617 } 618 } 619 620 static void piix4_ospm_status(AcpiDeviceIf *adev, ACPIOSTInfoList ***list) 621 { 622 PIIX4PMState *s = PIIX4_PM(adev); 623 624 acpi_memory_ospm_status(&s->acpi_memory_hotplug, list); 625 if (!s->cpu_hotplug_legacy) { 626 acpi_cpu_ospm_status(&s->cpuhp_state, list); 627 } 628 } 629 630 static void piix4_send_gpe(AcpiDeviceIf *adev, AcpiEventStatusBits ev) 631 { 632 PIIX4PMState *s = PIIX4_PM(adev); 633 634 acpi_send_gpe_event(&s->ar, s->irq, ev); 635 } 636 637 static Property piix4_pm_properties[] = { 638 DEFINE_PROP_UINT32("smb_io_base", PIIX4PMState, smb_io_base, 0), 639 DEFINE_PROP_UINT8(ACPI_PM_PROP_S3_DISABLED, PIIX4PMState, disable_s3, 0), 640 DEFINE_PROP_UINT8(ACPI_PM_PROP_S4_DISABLED, PIIX4PMState, disable_s4, 0), 641 DEFINE_PROP_UINT8(ACPI_PM_PROP_S4_VAL, PIIX4PMState, s4_val, 2), 642 DEFINE_PROP_BOOL("acpi-pci-hotplug-with-bridge-support", PIIX4PMState, 643 use_acpi_hotplug_bridge, true), 644 DEFINE_PROP_BOOL("acpi-root-pci-hotplug", PIIX4PMState, 645 use_acpi_root_pci_hotplug, true), 646 DEFINE_PROP_BOOL("memory-hotplug-support", PIIX4PMState, 647 acpi_memory_hotplug.is_enabled, true), 648 DEFINE_PROP_BOOL("smm-compat", PIIX4PMState, smm_compat, false), 649 DEFINE_PROP_END_OF_LIST(), 650 }; 651 652 static void piix4_pm_class_init(ObjectClass *klass, void *data) 653 { 654 DeviceClass *dc = DEVICE_CLASS(klass); 655 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); 656 HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass); 657 AcpiDeviceIfClass *adevc = ACPI_DEVICE_IF_CLASS(klass); 658 659 k->realize = piix4_pm_realize; 660 k->config_write = pm_write_config; 661 k->vendor_id = PCI_VENDOR_ID_INTEL; 662 k->device_id = PCI_DEVICE_ID_INTEL_82371AB_3; 663 k->revision = 0x03; 664 k->class_id = PCI_CLASS_BRIDGE_OTHER; 665 dc->reset = piix4_pm_reset; 666 dc->desc = "PM"; 667 dc->vmsd = &vmstate_acpi; 668 device_class_set_props(dc, piix4_pm_properties); 669 /* 670 * Reason: part of PIIX4 southbridge, needs to be wired up, 671 * e.g. by mips_malta_init() 672 */ 673 dc->user_creatable = false; 674 dc->hotpluggable = false; 675 hc->pre_plug = piix4_device_pre_plug_cb; 676 hc->plug = piix4_device_plug_cb; 677 hc->unplug_request = piix4_device_unplug_request_cb; 678 hc->unplug = piix4_device_unplug_cb; 679 adevc->ospm_status = piix4_ospm_status; 680 adevc->send_event = piix4_send_gpe; 681 adevc->madt_cpu = pc_madt_cpu_entry; 682 } 683 684 static const TypeInfo piix4_pm_info = { 685 .name = TYPE_PIIX4_PM, 686 .parent = TYPE_PCI_DEVICE, 687 .instance_size = sizeof(PIIX4PMState), 688 .class_init = piix4_pm_class_init, 689 .interfaces = (InterfaceInfo[]) { 690 { TYPE_HOTPLUG_HANDLER }, 691 { TYPE_ACPI_DEVICE_IF }, 692 { INTERFACE_CONVENTIONAL_PCI_DEVICE }, 693 { } 694 } 695 }; 696 697 static void piix4_pm_register_types(void) 698 { 699 type_register_static(&piix4_pm_info); 700 } 701 702 type_init(piix4_pm_register_types) 703