piix4.c (23059B)
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 "hw/acpi/pcihp.h" 37#include "hw/acpi/cpu_hotplug.h" 38#include "hw/acpi/cpu.h" 39#include "hw/hotplug.h" 40#include "hw/mem/pc-dimm.h" 41#include "hw/mem/nvdimm.h" 42#include "hw/acpi/memory_hotplug.h" 43#include "hw/acpi/acpi_dev_interface.h" 44#include "migration/vmstate.h" 45#include "hw/core/cpu.h" 46#include "trace.h" 47#include "qom/object.h" 48 49#define GPE_BASE 0xafe0 50#define GPE_LEN 4 51 52#define ACPI_PCIHP_ADDR_PIIX4 0xae00 53 54struct pci_status { 55 uint32_t up; /* deprecated, maintained for migration compatibility */ 56 uint32_t down; 57}; 58 59struct PIIX4PMState { 60 /*< private >*/ 61 PCIDevice parent_obj; 62 /*< public >*/ 63 64 MemoryRegion io; 65 uint32_t io_base; 66 67 MemoryRegion io_gpe; 68 ACPIREGS ar; 69 70 APMState apm; 71 72 PMSMBus smb; 73 uint32_t smb_io_base; 74 75 qemu_irq irq; 76 qemu_irq smi_irq; 77 int smm_enabled; 78 bool smm_compat; 79 Notifier machine_ready; 80 Notifier powerdown_notifier; 81 82 AcpiPciHpState acpi_pci_hotplug; 83 bool use_acpi_hotplug_bridge; 84 bool use_acpi_root_pci_hotplug; 85 86 uint8_t disable_s3; 87 uint8_t disable_s4; 88 uint8_t s4_val; 89 90 bool cpu_hotplug_legacy; 91 AcpiCpuHotplug gpe_cpu; 92 CPUHotplugState cpuhp_state; 93 94 MemHotplugState acpi_memory_hotplug; 95}; 96 97OBJECT_DECLARE_SIMPLE_TYPE(PIIX4PMState, PIIX4_PM) 98 99static void piix4_acpi_system_hot_add_init(MemoryRegion *parent, 100 PCIBus *bus, PIIX4PMState *s); 101 102#define ACPI_ENABLE 0xf1 103#define ACPI_DISABLE 0xf0 104 105static void pm_tmr_timer(ACPIREGS *ar) 106{ 107 PIIX4PMState *s = container_of(ar, PIIX4PMState, ar); 108 acpi_update_sci(&s->ar, s->irq); 109} 110 111static void apm_ctrl_changed(uint32_t val, void *arg) 112{ 113 PIIX4PMState *s = arg; 114 PCIDevice *d = PCI_DEVICE(s); 115 116 /* ACPI specs 3.0, 4.7.2.5 */ 117 acpi_pm1_cnt_update(&s->ar, val == ACPI_ENABLE, val == ACPI_DISABLE); 118 if (val == ACPI_ENABLE || val == ACPI_DISABLE) { 119 return; 120 } 121 122 if (d->config[0x5b] & (1 << 1)) { 123 if (s->smi_irq) { 124 qemu_irq_raise(s->smi_irq); 125 } 126 } 127} 128 129static void pm_io_space_update(PIIX4PMState *s) 130{ 131 PCIDevice *d = PCI_DEVICE(s); 132 133 s->io_base = le32_to_cpu(*(uint32_t *)(d->config + 0x40)); 134 s->io_base &= 0xffc0; 135 136 memory_region_transaction_begin(); 137 memory_region_set_enabled(&s->io, d->config[0x80] & 1); 138 memory_region_set_address(&s->io, s->io_base); 139 memory_region_transaction_commit(); 140} 141 142static void smbus_io_space_update(PIIX4PMState *s) 143{ 144 PCIDevice *d = PCI_DEVICE(s); 145 146 s->smb_io_base = le32_to_cpu(*(uint32_t *)(d->config + 0x90)); 147 s->smb_io_base &= 0xffc0; 148 149 memory_region_transaction_begin(); 150 memory_region_set_enabled(&s->smb.io, d->config[0xd2] & 1); 151 memory_region_set_address(&s->smb.io, s->smb_io_base); 152 memory_region_transaction_commit(); 153} 154 155static void pm_write_config(PCIDevice *d, 156 uint32_t address, uint32_t val, int len) 157{ 158 pci_default_write_config(d, address, val, len); 159 if (range_covers_byte(address, len, 0x80) || 160 ranges_overlap(address, len, 0x40, 4)) { 161 pm_io_space_update((PIIX4PMState *)d); 162 } 163 if (range_covers_byte(address, len, 0xd2) || 164 ranges_overlap(address, len, 0x90, 4)) { 165 smbus_io_space_update((PIIX4PMState *)d); 166 } 167} 168 169static int vmstate_acpi_post_load(void *opaque, int version_id) 170{ 171 PIIX4PMState *s = opaque; 172 173 pm_io_space_update(s); 174 smbus_io_space_update(s); 175 return 0; 176} 177 178#define VMSTATE_GPE_ARRAY(_field, _state) \ 179 { \ 180 .name = (stringify(_field)), \ 181 .version_id = 0, \ 182 .info = &vmstate_info_uint16, \ 183 .size = sizeof(uint16_t), \ 184 .flags = VMS_SINGLE | VMS_POINTER, \ 185 .offset = vmstate_offset_pointer(_state, _field, uint8_t), \ 186 } 187 188static const VMStateDescription vmstate_gpe = { 189 .name = "gpe", 190 .version_id = 1, 191 .minimum_version_id = 1, 192 .fields = (VMStateField[]) { 193 VMSTATE_GPE_ARRAY(sts, ACPIGPE), 194 VMSTATE_GPE_ARRAY(en, ACPIGPE), 195 VMSTATE_END_OF_LIST() 196 } 197}; 198 199static const VMStateDescription vmstate_pci_status = { 200 .name = "pci_status", 201 .version_id = 1, 202 .minimum_version_id = 1, 203 .fields = (VMStateField[]) { 204 VMSTATE_UINT32(up, struct AcpiPciHpPciStatus), 205 VMSTATE_UINT32(down, struct AcpiPciHpPciStatus), 206 VMSTATE_END_OF_LIST() 207 } 208}; 209 210static bool vmstate_test_use_acpi_hotplug_bridge(void *opaque, int version_id) 211{ 212 PIIX4PMState *s = opaque; 213 return s->use_acpi_hotplug_bridge; 214} 215 216static bool vmstate_test_no_use_acpi_hotplug_bridge(void *opaque, 217 int version_id) 218{ 219 PIIX4PMState *s = opaque; 220 return !s->use_acpi_hotplug_bridge; 221} 222 223static bool vmstate_test_use_memhp(void *opaque) 224{ 225 PIIX4PMState *s = opaque; 226 return s->acpi_memory_hotplug.is_enabled; 227} 228 229static const VMStateDescription vmstate_memhp_state = { 230 .name = "piix4_pm/memhp", 231 .version_id = 1, 232 .minimum_version_id = 1, 233 .minimum_version_id_old = 1, 234 .needed = vmstate_test_use_memhp, 235 .fields = (VMStateField[]) { 236 VMSTATE_MEMORY_HOTPLUG(acpi_memory_hotplug, PIIX4PMState), 237 VMSTATE_END_OF_LIST() 238 } 239}; 240 241static bool vmstate_test_use_cpuhp(void *opaque) 242{ 243 PIIX4PMState *s = opaque; 244 return !s->cpu_hotplug_legacy; 245} 246 247static int vmstate_cpuhp_pre_load(void *opaque) 248{ 249 Object *obj = OBJECT(opaque); 250 object_property_set_bool(obj, "cpu-hotplug-legacy", false, &error_abort); 251 return 0; 252} 253 254static const VMStateDescription vmstate_cpuhp_state = { 255 .name = "piix4_pm/cpuhp", 256 .version_id = 1, 257 .minimum_version_id = 1, 258 .minimum_version_id_old = 1, 259 .needed = vmstate_test_use_cpuhp, 260 .pre_load = vmstate_cpuhp_pre_load, 261 .fields = (VMStateField[]) { 262 VMSTATE_CPU_HOTPLUG(cpuhp_state, PIIX4PMState), 263 VMSTATE_END_OF_LIST() 264 } 265}; 266 267static bool piix4_vmstate_need_smbus(void *opaque, int version_id) 268{ 269 return pm_smbus_vmstate_needed(); 270} 271 272/* qemu-kvm 1.2 uses version 3 but advertised as 2 273 * To support incoming qemu-kvm 1.2 migration, change version_id 274 * and minimum_version_id to 2 below (which breaks migration from 275 * qemu 1.2). 276 * 277 */ 278static const VMStateDescription vmstate_acpi = { 279 .name = "piix4_pm", 280 .version_id = 3, 281 .minimum_version_id = 3, 282 .post_load = vmstate_acpi_post_load, 283 .fields = (VMStateField[]) { 284 VMSTATE_PCI_DEVICE(parent_obj, PIIX4PMState), 285 VMSTATE_UINT16(ar.pm1.evt.sts, PIIX4PMState), 286 VMSTATE_UINT16(ar.pm1.evt.en, PIIX4PMState), 287 VMSTATE_UINT16(ar.pm1.cnt.cnt, PIIX4PMState), 288 VMSTATE_STRUCT(apm, PIIX4PMState, 0, vmstate_apm, APMState), 289 VMSTATE_STRUCT_TEST(smb, PIIX4PMState, piix4_vmstate_need_smbus, 3, 290 pmsmb_vmstate, PMSMBus), 291 VMSTATE_TIMER_PTR(ar.tmr.timer, PIIX4PMState), 292 VMSTATE_INT64(ar.tmr.overflow_time, PIIX4PMState), 293 VMSTATE_STRUCT(ar.gpe, PIIX4PMState, 2, vmstate_gpe, ACPIGPE), 294 VMSTATE_STRUCT_TEST( 295 acpi_pci_hotplug.acpi_pcihp_pci_status[ACPI_PCIHP_BSEL_DEFAULT], 296 PIIX4PMState, 297 vmstate_test_no_use_acpi_hotplug_bridge, 298 2, vmstate_pci_status, 299 struct AcpiPciHpPciStatus), 300 VMSTATE_PCI_HOTPLUG(acpi_pci_hotplug, PIIX4PMState, 301 vmstate_test_use_acpi_hotplug_bridge, 302 vmstate_acpi_pcihp_use_acpi_index), 303 VMSTATE_END_OF_LIST() 304 }, 305 .subsections = (const VMStateDescription*[]) { 306 &vmstate_memhp_state, 307 &vmstate_cpuhp_state, 308 NULL 309 } 310}; 311 312static void piix4_pm_reset(DeviceState *dev) 313{ 314 PIIX4PMState *s = PIIX4_PM(dev); 315 PCIDevice *d = PCI_DEVICE(s); 316 uint8_t *pci_conf = d->config; 317 318 pci_conf[0x58] = 0; 319 pci_conf[0x59] = 0; 320 pci_conf[0x5a] = 0; 321 pci_conf[0x5b] = 0; 322 323 pci_conf[0x40] = 0x01; /* PM io base read only bit */ 324 pci_conf[0x80] = 0; 325 326 if (!s->smm_enabled) { 327 /* Mark SMM as already inited (until KVM supports SMM). */ 328 pci_conf[0x5B] = 0x02; 329 } 330 331 acpi_pm1_evt_reset(&s->ar); 332 acpi_pm1_cnt_reset(&s->ar); 333 acpi_pm_tmr_reset(&s->ar); 334 acpi_gpe_reset(&s->ar); 335 acpi_update_sci(&s->ar, s->irq); 336 337 pm_io_space_update(s); 338 acpi_pcihp_reset(&s->acpi_pci_hotplug, !s->use_acpi_root_pci_hotplug); 339} 340 341static void piix4_pm_powerdown_req(Notifier *n, void *opaque) 342{ 343 PIIX4PMState *s = container_of(n, PIIX4PMState, powerdown_notifier); 344 345 assert(s != NULL); 346 acpi_pm1_evt_power_down(&s->ar); 347} 348 349static void piix4_device_pre_plug_cb(HotplugHandler *hotplug_dev, 350 DeviceState *dev, Error **errp) 351{ 352 PIIX4PMState *s = PIIX4_PM(hotplug_dev); 353 354 if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) { 355 acpi_pcihp_device_pre_plug_cb(hotplug_dev, dev, errp); 356 } else if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { 357 if (!s->acpi_memory_hotplug.is_enabled) { 358 error_setg(errp, 359 "memory hotplug is not enabled: %s.memory-hotplug-support " 360 "is not set", object_get_typename(OBJECT(s))); 361 } 362 } else if ( 363 !object_dynamic_cast(OBJECT(dev), TYPE_CPU)) { 364 error_setg(errp, "acpi: device pre plug request for not supported" 365 " device type: %s", object_get_typename(OBJECT(dev))); 366 } 367} 368 369static void piix4_device_plug_cb(HotplugHandler *hotplug_dev, 370 DeviceState *dev, Error **errp) 371{ 372 PIIX4PMState *s = PIIX4_PM(hotplug_dev); 373 374 if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { 375 if (object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM)) { 376 nvdimm_acpi_plug_cb(hotplug_dev, dev); 377 } else { 378 acpi_memory_plug_cb(hotplug_dev, &s->acpi_memory_hotplug, 379 dev, errp); 380 } 381 } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) { 382 acpi_pcihp_device_plug_cb(hotplug_dev, &s->acpi_pci_hotplug, dev, errp); 383 } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) { 384 if (s->cpu_hotplug_legacy) { 385 legacy_acpi_cpu_plug_cb(hotplug_dev, &s->gpe_cpu, dev, errp); 386 } else { 387 acpi_cpu_plug_cb(hotplug_dev, &s->cpuhp_state, dev, errp); 388 } 389 } else { 390 g_assert_not_reached(); 391 } 392} 393 394static void piix4_device_unplug_request_cb(HotplugHandler *hotplug_dev, 395 DeviceState *dev, Error **errp) 396{ 397 PIIX4PMState *s = PIIX4_PM(hotplug_dev); 398 399 if (s->acpi_memory_hotplug.is_enabled && 400 object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { 401 acpi_memory_unplug_request_cb(hotplug_dev, &s->acpi_memory_hotplug, 402 dev, errp); 403 } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) { 404 acpi_pcihp_device_unplug_request_cb(hotplug_dev, &s->acpi_pci_hotplug, 405 dev, errp); 406 } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU) && 407 !s->cpu_hotplug_legacy) { 408 acpi_cpu_unplug_request_cb(hotplug_dev, &s->cpuhp_state, dev, errp); 409 } else { 410 error_setg(errp, "acpi: device unplug request for not supported device" 411 " type: %s", object_get_typename(OBJECT(dev))); 412 } 413} 414 415static void piix4_device_unplug_cb(HotplugHandler *hotplug_dev, 416 DeviceState *dev, Error **errp) 417{ 418 PIIX4PMState *s = PIIX4_PM(hotplug_dev); 419 420 if (s->acpi_memory_hotplug.is_enabled && 421 object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { 422 acpi_memory_unplug_cb(&s->acpi_memory_hotplug, dev, errp); 423 } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) { 424 acpi_pcihp_device_unplug_cb(hotplug_dev, &s->acpi_pci_hotplug, dev, 425 errp); 426 } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU) && 427 !s->cpu_hotplug_legacy) { 428 acpi_cpu_unplug_cb(&s->cpuhp_state, dev, errp); 429 } else { 430 error_setg(errp, "acpi: device unplug for not supported device" 431 " type: %s", object_get_typename(OBJECT(dev))); 432 } 433} 434 435static void piix4_pm_machine_ready(Notifier *n, void *opaque) 436{ 437 PIIX4PMState *s = container_of(n, PIIX4PMState, machine_ready); 438 PCIDevice *d = PCI_DEVICE(s); 439 MemoryRegion *io_as = pci_address_space_io(d); 440 uint8_t *pci_conf; 441 442 pci_conf = d->config; 443 pci_conf[0x5f] = 0x10 | 444 (memory_region_present(io_as, 0x378) ? 0x80 : 0); 445 pci_conf[0x63] = 0x60; 446 pci_conf[0x67] = (memory_region_present(io_as, 0x3f8) ? 0x08 : 0) | 447 (memory_region_present(io_as, 0x2f8) ? 0x90 : 0); 448} 449 450static void piix4_pm_add_properties(PIIX4PMState *s) 451{ 452 static const uint8_t acpi_enable_cmd = ACPI_ENABLE; 453 static const uint8_t acpi_disable_cmd = ACPI_DISABLE; 454 static const uint32_t gpe0_blk = GPE_BASE; 455 static const uint32_t gpe0_blk_len = GPE_LEN; 456 static const uint16_t sci_int = 9; 457 458 object_property_add_uint8_ptr(OBJECT(s), ACPI_PM_PROP_ACPI_ENABLE_CMD, 459 &acpi_enable_cmd, OBJ_PROP_FLAG_READ); 460 object_property_add_uint8_ptr(OBJECT(s), ACPI_PM_PROP_ACPI_DISABLE_CMD, 461 &acpi_disable_cmd, OBJ_PROP_FLAG_READ); 462 object_property_add_uint32_ptr(OBJECT(s), ACPI_PM_PROP_GPE0_BLK, 463 &gpe0_blk, OBJ_PROP_FLAG_READ); 464 object_property_add_uint32_ptr(OBJECT(s), ACPI_PM_PROP_GPE0_BLK_LEN, 465 &gpe0_blk_len, OBJ_PROP_FLAG_READ); 466 object_property_add_uint16_ptr(OBJECT(s), ACPI_PM_PROP_SCI_INT, 467 &sci_int, OBJ_PROP_FLAG_READ); 468 object_property_add_uint32_ptr(OBJECT(s), ACPI_PM_PROP_PM_IO_BASE, 469 &s->io_base, OBJ_PROP_FLAG_READ); 470} 471 472static void piix4_pm_realize(PCIDevice *dev, Error **errp) 473{ 474 PIIX4PMState *s = PIIX4_PM(dev); 475 uint8_t *pci_conf; 476 477 pci_conf = dev->config; 478 pci_conf[0x06] = 0x80; 479 pci_conf[0x07] = 0x02; 480 pci_conf[0x09] = 0x00; 481 pci_conf[0x3d] = 0x01; // interrupt pin 1 482 483 /* APM */ 484 apm_init(dev, &s->apm, apm_ctrl_changed, s); 485 486 if (!s->smm_enabled) { 487 /* Mark SMM as already inited to prevent SMM from running. KVM does not 488 * support SMM mode. */ 489 pci_conf[0x5B] = 0x02; 490 } 491 492 /* XXX: which specification is used ? The i82731AB has different 493 mappings */ 494 pci_conf[0x90] = s->smb_io_base | 1; 495 pci_conf[0x91] = s->smb_io_base >> 8; 496 pci_conf[0xd2] = 0x09; 497 pm_smbus_init(DEVICE(dev), &s->smb, true); 498 memory_region_set_enabled(&s->smb.io, pci_conf[0xd2] & 1); 499 memory_region_add_subregion(pci_address_space_io(dev), 500 s->smb_io_base, &s->smb.io); 501 502 memory_region_init(&s->io, OBJECT(s), "piix4-pm", 64); 503 memory_region_set_enabled(&s->io, false); 504 memory_region_add_subregion(pci_address_space_io(dev), 505 0, &s->io); 506 507 acpi_pm_tmr_init(&s->ar, pm_tmr_timer, &s->io); 508 acpi_pm1_evt_init(&s->ar, pm_tmr_timer, &s->io); 509 acpi_pm1_cnt_init(&s->ar, &s->io, s->disable_s3, s->disable_s4, s->s4_val, 510 !s->smm_compat && !s->smm_enabled); 511 acpi_gpe_init(&s->ar, GPE_LEN); 512 513 s->powerdown_notifier.notify = piix4_pm_powerdown_req; 514 qemu_register_powerdown_notifier(&s->powerdown_notifier); 515 516 s->machine_ready.notify = piix4_pm_machine_ready; 517 qemu_add_machine_init_done_notifier(&s->machine_ready); 518 519 piix4_acpi_system_hot_add_init(pci_address_space_io(dev), 520 pci_get_bus(dev), s); 521 qbus_set_hotplug_handler(BUS(pci_get_bus(dev)), OBJECT(s)); 522 523 piix4_pm_add_properties(s); 524} 525 526I2CBus *piix4_pm_init(PCIBus *bus, int devfn, uint32_t smb_io_base, 527 qemu_irq sci_irq, qemu_irq smi_irq, 528 int smm_enabled, DeviceState **piix4_pm) 529{ 530 PCIDevice *pci_dev; 531 DeviceState *dev; 532 PIIX4PMState *s; 533 534 pci_dev = pci_new(devfn, TYPE_PIIX4_PM); 535 dev = DEVICE(pci_dev); 536 qdev_prop_set_uint32(dev, "smb_io_base", smb_io_base); 537 if (piix4_pm) { 538 *piix4_pm = dev; 539 } 540 541 s = PIIX4_PM(dev); 542 s->irq = sci_irq; 543 s->smi_irq = smi_irq; 544 s->smm_enabled = smm_enabled; 545 if (xen_enabled()) { 546 s->use_acpi_hotplug_bridge = false; 547 } 548 549 pci_realize_and_unref(pci_dev, bus, &error_fatal); 550 551 return s->smb.smbus; 552} 553 554static uint64_t gpe_readb(void *opaque, hwaddr addr, unsigned width) 555{ 556 PIIX4PMState *s = opaque; 557 uint32_t val = acpi_gpe_ioport_readb(&s->ar, addr); 558 559 trace_piix4_gpe_readb(addr, width, val); 560 return val; 561} 562 563static void gpe_writeb(void *opaque, hwaddr addr, uint64_t val, 564 unsigned width) 565{ 566 PIIX4PMState *s = opaque; 567 568 trace_piix4_gpe_writeb(addr, width, val); 569 acpi_gpe_ioport_writeb(&s->ar, addr, val); 570 acpi_update_sci(&s->ar, s->irq); 571} 572 573static const MemoryRegionOps piix4_gpe_ops = { 574 .read = gpe_readb, 575 .write = gpe_writeb, 576 .valid.min_access_size = 1, 577 .valid.max_access_size = 4, 578 .impl.min_access_size = 1, 579 .impl.max_access_size = 1, 580 .endianness = DEVICE_LITTLE_ENDIAN, 581}; 582 583 584static bool piix4_get_cpu_hotplug_legacy(Object *obj, Error **errp) 585{ 586 PIIX4PMState *s = PIIX4_PM(obj); 587 588 return s->cpu_hotplug_legacy; 589} 590 591static void piix4_set_cpu_hotplug_legacy(Object *obj, bool value, Error **errp) 592{ 593 PIIX4PMState *s = PIIX4_PM(obj); 594 595 assert(!value); 596 if (s->cpu_hotplug_legacy && value == false) { 597 acpi_switch_to_modern_cphp(&s->gpe_cpu, &s->cpuhp_state, 598 PIIX4_CPU_HOTPLUG_IO_BASE); 599 } 600 s->cpu_hotplug_legacy = value; 601} 602 603static void piix4_acpi_system_hot_add_init(MemoryRegion *parent, 604 PCIBus *bus, PIIX4PMState *s) 605{ 606 memory_region_init_io(&s->io_gpe, OBJECT(s), &piix4_gpe_ops, s, 607 "acpi-gpe0", GPE_LEN); 608 memory_region_add_subregion(parent, GPE_BASE, &s->io_gpe); 609 610 if (s->use_acpi_hotplug_bridge || s->use_acpi_root_pci_hotplug) { 611 acpi_pcihp_init(OBJECT(s), &s->acpi_pci_hotplug, bus, parent, 612 s->use_acpi_hotplug_bridge, ACPI_PCIHP_ADDR_PIIX4); 613 } 614 615 s->cpu_hotplug_legacy = true; 616 object_property_add_bool(OBJECT(s), "cpu-hotplug-legacy", 617 piix4_get_cpu_hotplug_legacy, 618 piix4_set_cpu_hotplug_legacy); 619 legacy_acpi_cpu_hotplug_init(parent, OBJECT(s), &s->gpe_cpu, 620 PIIX4_CPU_HOTPLUG_IO_BASE); 621 622 if (s->acpi_memory_hotplug.is_enabled) { 623 acpi_memory_hotplug_init(parent, OBJECT(s), &s->acpi_memory_hotplug, 624 ACPI_MEMORY_HOTPLUG_BASE); 625 } 626} 627 628static void piix4_ospm_status(AcpiDeviceIf *adev, ACPIOSTInfoList ***list) 629{ 630 PIIX4PMState *s = PIIX4_PM(adev); 631 632 acpi_memory_ospm_status(&s->acpi_memory_hotplug, list); 633 if (!s->cpu_hotplug_legacy) { 634 acpi_cpu_ospm_status(&s->cpuhp_state, list); 635 } 636} 637 638static void piix4_send_gpe(AcpiDeviceIf *adev, AcpiEventStatusBits ev) 639{ 640 PIIX4PMState *s = PIIX4_PM(adev); 641 642 acpi_send_gpe_event(&s->ar, s->irq, ev); 643} 644 645static Property piix4_pm_properties[] = { 646 DEFINE_PROP_UINT32("smb_io_base", PIIX4PMState, smb_io_base, 0), 647 DEFINE_PROP_UINT8(ACPI_PM_PROP_S3_DISABLED, PIIX4PMState, disable_s3, 0), 648 DEFINE_PROP_UINT8(ACPI_PM_PROP_S4_DISABLED, PIIX4PMState, disable_s4, 0), 649 DEFINE_PROP_UINT8(ACPI_PM_PROP_S4_VAL, PIIX4PMState, s4_val, 2), 650 DEFINE_PROP_BOOL(ACPI_PM_PROP_ACPI_PCIHP_BRIDGE, PIIX4PMState, 651 use_acpi_hotplug_bridge, true), 652 DEFINE_PROP_BOOL(ACPI_PM_PROP_ACPI_PCI_ROOTHP, PIIX4PMState, 653 use_acpi_root_pci_hotplug, true), 654 DEFINE_PROP_BOOL("memory-hotplug-support", PIIX4PMState, 655 acpi_memory_hotplug.is_enabled, true), 656 DEFINE_PROP_BOOL("smm-compat", PIIX4PMState, smm_compat, false), 657 DEFINE_PROP_END_OF_LIST(), 658}; 659 660static void piix4_pm_class_init(ObjectClass *klass, void *data) 661{ 662 DeviceClass *dc = DEVICE_CLASS(klass); 663 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); 664 HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass); 665 AcpiDeviceIfClass *adevc = ACPI_DEVICE_IF_CLASS(klass); 666 667 k->realize = piix4_pm_realize; 668 k->config_write = pm_write_config; 669 k->vendor_id = PCI_VENDOR_ID_INTEL; 670 k->device_id = PCI_DEVICE_ID_INTEL_82371AB_3; 671 k->revision = 0x03; 672 k->class_id = PCI_CLASS_BRIDGE_OTHER; 673 dc->reset = piix4_pm_reset; 674 dc->desc = "PM"; 675 dc->vmsd = &vmstate_acpi; 676 device_class_set_props(dc, piix4_pm_properties); 677 /* 678 * Reason: part of PIIX4 southbridge, needs to be wired up, 679 * e.g. by mips_malta_init() 680 */ 681 dc->user_creatable = false; 682 dc->hotpluggable = false; 683 hc->pre_plug = piix4_device_pre_plug_cb; 684 hc->plug = piix4_device_plug_cb; 685 hc->unplug_request = piix4_device_unplug_request_cb; 686 hc->unplug = piix4_device_unplug_cb; 687 adevc->ospm_status = piix4_ospm_status; 688 adevc->send_event = piix4_send_gpe; 689 adevc->madt_cpu = pc_madt_cpu_entry; 690} 691 692static const TypeInfo piix4_pm_info = { 693 .name = TYPE_PIIX4_PM, 694 .parent = TYPE_PCI_DEVICE, 695 .instance_size = sizeof(PIIX4PMState), 696 .class_init = piix4_pm_class_init, 697 .interfaces = (InterfaceInfo[]) { 698 { TYPE_HOTPLUG_HANDLER }, 699 { TYPE_ACPI_DEVICE_IF }, 700 { INTERFACE_CONVENTIONAL_PCI_DEVICE }, 701 { } 702 } 703}; 704 705static void piix4_pm_register_types(void) 706{ 707 type_register_static(&piix4_pm_info); 708} 709 710type_init(piix4_pm_register_types)