| 1 | /* |
| 2 | * |
| 3 | * Copyright (c) 2018 Intel Corporation |
| 4 | * Copyright (c) 2019 Huawei Technologies R & D (UK) Ltd |
| 5 | * Written by Samuel Ortiz, Shameer Kolothum |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify it |
| 8 | * under the terms and conditions of the GNU General Public License, |
| 9 | * version 2 or later, as published by the Free Software Foundation. |
| 10 | */ |
| 11 | |
| 12 | #include "qemu/osdep.h" |
| 13 | #include "qapi/error.h" |
| 14 | #include "qapi/visitor.h" |
| 15 | #include "hw/acpi/acpi.h" |
| 16 | #include "hw/acpi/pcihp.h" |
| 17 | #include "hw/acpi/cpu.h" |
| 18 | #include "hw/acpi/generic_event_device.h" |
| 19 | #include "hw/pci/pci.h" |
| 20 | #include "hw/core/irq.h" |
| 21 | #include "hw/mem/pc-dimm.h" |
| 22 | #include "hw/mem/nvdimm.h" |
| 23 | #include "hw/pci/pci_device.h" |
| 24 | #include "hw/core/qdev-properties.h" |
| 25 | #include "migration/vmstate.h" |
| 26 | #include "qemu/error-report.h" |
| 27 | #include "system/runstate.h" |
| 28 | |
| 29 | static const uint32_t ged_supported_events[] = { |
| 30 | ACPI_GED_MEM_HOTPLUG_EVT, |
| 31 | ACPI_GED_PWR_DOWN_EVT, |
| 32 | ACPI_GED_NVDIMM_HOTPLUG_EVT, |
| 33 | ACPI_GED_CPU_HOTPLUG_EVT, |
| 34 | ACPI_GED_PCI_HOTPLUG_EVT, |
| 35 | ACPI_GED_ERROR_EVT, |
| 36 | }; |
| 37 | |
| 38 | /* |
| 39 | * The ACPI Generic Event Device (GED) is a hardware-reduced specific |
| 40 | * device[ACPI v6.1 Section 5.6.9] that handles all platform events, |
| 41 | * including the hotplug ones. Platforms need to specify their own |
| 42 | * GED Event bitmap to describe what kind of events they want to support |
| 43 | * through GED. This routine uses a single interrupt for the GED device, |
| 44 | * relying on IO memory region to communicate the type of device |
| 45 | * affected by the interrupt. This way, we can support up to 32 events |
| 46 | * with a unique interrupt. |
| 47 | */ |
| 48 | void build_ged_aml(Aml *table, const char *name, HotplugHandler *hotplug_dev, |
| 49 | uint32_t ged_irq, AmlRegionSpace rs, hwaddr ged_base) |
| 50 | { |
| 51 | AcpiGedState *s = ACPI_GED(hotplug_dev); |
| 52 | Aml *crs = aml_resource_template(); |
| 53 | Aml *evt, *field; |
| 54 | Aml *dev = aml_device("%s", name); |
| 55 | Aml *evt_sel = aml_local(0); |
| 56 | Aml *esel = aml_name(AML_GED_EVT_SEL); |
| 57 | |
| 58 | /* _CRS interrupt */ |
| 59 | aml_append(crs, aml_interrupt(AML_CONSUMER, AML_EDGE, AML_ACTIVE_HIGH, |
| 60 | AML_EXCLUSIVE, &ged_irq, 1)); |
| 61 | |
| 62 | aml_append(dev, aml_name_decl("_HID", aml_string("ACPI0013"))); |
| 63 | aml_append(dev, aml_name_decl("_UID", aml_string(GED_DEVICE))); |
| 64 | aml_append(dev, aml_name_decl("_CRS", crs)); |
| 65 | |
| 66 | /* Append IO region */ |
| 67 | aml_append(dev, aml_operation_region(AML_GED_EVT_REG, rs, |
| 68 | aml_int(ged_base + ACPI_GED_EVT_SEL_OFFSET), |
| 69 | ACPI_GED_EVT_SEL_LEN)); |
| 70 | field = aml_field(AML_GED_EVT_REG, AML_DWORD_ACC, AML_NOLOCK, |
| 71 | AML_WRITE_AS_ZEROS); |
| 72 | aml_append(field, aml_named_field(AML_GED_EVT_SEL, |
| 73 | ACPI_GED_EVT_SEL_LEN * BITS_PER_BYTE)); |
| 74 | aml_append(dev, field); |
| 75 | |
| 76 | /* |
| 77 | * For each GED event we: |
| 78 | * - Add a conditional block for each event, inside a loop. |
| 79 | * - Call a method for each supported GED event type. |
| 80 | * |
| 81 | * The resulting ASL code looks like: |
| 82 | * |
| 83 | * Local0 = ESEL |
| 84 | * If ((Local0 & One) == One) |
| 85 | * { |
| 86 | * MethodEvent0() |
| 87 | * } |
| 88 | * |
| 89 | * If ((Local0 & 0x2) == 0x2) |
| 90 | * { |
| 91 | * MethodEvent1() |
| 92 | * } |
| 93 | * ... |
| 94 | */ |
| 95 | evt = aml_method("_EVT", 1, AML_SERIALIZED); |
| 96 | { |
| 97 | Aml *if_ctx; |
| 98 | uint32_t i; |
| 99 | uint32_t ged_events = ctpop32(s->ged_event_bitmap); |
| 100 | |
| 101 | /* Local0 = ESEL */ |
| 102 | aml_append(evt, aml_store(esel, evt_sel)); |
| 103 | |
| 104 | for (i = 0; i < ARRAY_SIZE(ged_supported_events) && ged_events; i++) { |
| 105 | uint32_t event = s->ged_event_bitmap & ged_supported_events[i]; |
| 106 | |
| 107 | if (!event) { |
| 108 | continue; |
| 109 | } |
| 110 | |
| 111 | if_ctx = aml_if(aml_equal(aml_and(evt_sel, aml_int(event), NULL), |
| 112 | aml_int(event))); |
| 113 | switch (event) { |
| 114 | case ACPI_GED_MEM_HOTPLUG_EVT: |
| 115 | aml_append(if_ctx, aml_call0(MEMORY_DEVICES_CONTAINER "." |
| 116 | MEMORY_SLOT_SCAN_METHOD)); |
| 117 | break; |
| 118 | case ACPI_GED_CPU_HOTPLUG_EVT: |
| 119 | aml_append(if_ctx, aml_call0(AML_GED_EVT_CPU_SCAN_METHOD)); |
| 120 | break; |
| 121 | case ACPI_GED_PWR_DOWN_EVT: |
| 122 | aml_append(if_ctx, |
| 123 | aml_notify(aml_name(ACPI_POWER_BUTTON_DEVICE), |
| 124 | aml_int(0x80))); |
| 125 | break; |
| 126 | case ACPI_GED_ERROR_EVT: |
| 127 | /* |
| 128 | * ACPI 5.0b: 5.6.6 Device Object Notifications |
| 129 | * Table 5-135 Error Device Notification Values |
| 130 | * Defines 0x80 as the value to be used on notifications |
| 131 | */ |
| 132 | aml_append(if_ctx, |
| 133 | aml_notify(aml_name(ACPI_APEI_ERROR_DEVICE), |
| 134 | aml_int(0x80))); |
| 135 | break; |
| 136 | case ACPI_GED_NVDIMM_HOTPLUG_EVT: |
| 137 | aml_append(if_ctx, |
| 138 | aml_notify(aml_name("\\_SB.NVDR"), |
| 139 | aml_int(0x80))); |
| 140 | break; |
| 141 | case ACPI_GED_PCI_HOTPLUG_EVT: |
| 142 | aml_append(if_ctx, |
| 143 | aml_acquire(aml_name("\\_SB.PCI0.BLCK"), 0xFFFF)); |
| 144 | aml_append(if_ctx, aml_call0("\\_SB.PCI0.PCNT")); |
| 145 | aml_append(if_ctx, aml_release(aml_name("\\_SB.PCI0.BLCK"))); |
| 146 | break; |
| 147 | default: |
| 148 | /* |
| 149 | * Please make sure all the events in ged_supported_events[] |
| 150 | * are handled above. |
| 151 | */ |
| 152 | g_assert_not_reached(); |
| 153 | } |
| 154 | |
| 155 | aml_append(evt, if_ctx); |
| 156 | ged_events--; |
| 157 | } |
| 158 | |
| 159 | if (ged_events) { |
| 160 | error_report("Unsupported events specified"); |
| 161 | abort(); |
| 162 | } |
| 163 | } |
| 164 | |
| 165 | /* Append _EVT method */ |
| 166 | aml_append(dev, evt); |
| 167 | |
| 168 | aml_append(table, dev); |
| 169 | } |
| 170 | |
| 171 | void acpi_dsdt_add_power_button(Aml *scope) |
| 172 | { |
| 173 | Aml *dev = aml_device(ACPI_POWER_BUTTON_DEVICE); |
| 174 | aml_append(dev, aml_name_decl("_HID", aml_string("PNP0C0C"))); |
| 175 | aml_append(dev, aml_name_decl("_UID", aml_int(0))); |
| 176 | aml_append(scope, dev); |
| 177 | } |
| 178 | |
| 179 | /* Memory read by the GED _EVT AML dynamic method */ |
| 180 | static uint64_t ged_evt_read(void *opaque, hwaddr addr, unsigned size) |
| 181 | { |
| 182 | uint64_t val = 0; |
| 183 | GEDState *ged_st = opaque; |
| 184 | |
| 185 | switch (addr) { |
| 186 | case ACPI_GED_EVT_SEL_OFFSET: |
| 187 | /* Read the selector value and reset it */ |
| 188 | val = ged_st->sel; |
| 189 | ged_st->sel = 0; |
| 190 | break; |
| 191 | default: |
| 192 | break; |
| 193 | } |
| 194 | |
| 195 | return val; |
| 196 | } |
| 197 | |
| 198 | /* Nothing is expected to be written to the GED memory region */ |
| 199 | static void ged_evt_write(void *opaque, hwaddr addr, uint64_t data, |
| 200 | unsigned int size) |
| 201 | { |
| 202 | } |
| 203 | |
| 204 | static const MemoryRegionOps ged_evt_ops = { |
| 205 | .read = ged_evt_read, |
| 206 | .write = ged_evt_write, |
| 207 | .endianness = DEVICE_LITTLE_ENDIAN, |
| 208 | .valid = { |
| 209 | .min_access_size = 4, |
| 210 | .max_access_size = 4, |
| 211 | }, |
| 212 | }; |
| 213 | |
| 214 | static uint64_t ged_regs_read(void *opaque, hwaddr addr, unsigned size) |
| 215 | { |
| 216 | return 0; |
| 217 | } |
| 218 | |
| 219 | static void ged_regs_write(void *opaque, hwaddr addr, uint64_t data, |
| 220 | unsigned int size) |
| 221 | { |
| 222 | bool slp_en; |
| 223 | int slp_typ; |
| 224 | |
| 225 | switch (addr) { |
| 226 | case ACPI_GED_REG_SLEEP_CTL: |
| 227 | slp_typ = (data >> ACPI_GED_SLP_TYP_POS) & ACPI_GED_SLP_TYP_MASK; |
| 228 | slp_en = !!(data & ACPI_GED_SLP_EN); |
| 229 | if (slp_en && slp_typ == ACPI_GED_SLP_TYP_S5) { |
| 230 | qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN); |
| 231 | } |
| 232 | return; |
| 233 | case ACPI_GED_REG_SLEEP_STS: |
| 234 | return; |
| 235 | case ACPI_GED_REG_RESET: |
| 236 | if (data == ACPI_GED_RESET_VALUE) { |
| 237 | qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET); |
| 238 | } |
| 239 | return; |
| 240 | } |
| 241 | } |
| 242 | |
| 243 | static const MemoryRegionOps ged_regs_ops = { |
| 244 | .read = ged_regs_read, |
| 245 | .write = ged_regs_write, |
| 246 | .endianness = DEVICE_LITTLE_ENDIAN, |
| 247 | .valid = { |
| 248 | .min_access_size = 1, |
| 249 | .max_access_size = 1, |
| 250 | }, |
| 251 | }; |
| 252 | |
| 253 | static void acpi_ged_device_pre_plug_cb(HotplugHandler *hotplug_dev, |
| 254 | DeviceState *dev, Error **errp) |
| 255 | { |
| 256 | if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) { |
| 257 | acpi_pcihp_device_pre_plug_cb(hotplug_dev, dev, errp); |
| 258 | } |
| 259 | } |
| 260 | |
| 261 | static void acpi_ged_device_plug_cb(HotplugHandler *hotplug_dev, |
| 262 | DeviceState *dev, Error **errp) |
| 263 | { |
| 264 | AcpiGedState *s = ACPI_GED(hotplug_dev); |
| 265 | |
| 266 | if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { |
| 267 | if (object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM)) { |
| 268 | nvdimm_acpi_plug_cb(hotplug_dev, dev); |
| 269 | } else { |
| 270 | acpi_memory_plug_cb(hotplug_dev, &s->memhp_state, dev, errp); |
| 271 | } |
| 272 | } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) { |
| 273 | acpi_cpu_plug_cb(hotplug_dev, &s->cpuhp_state, dev, errp); |
| 274 | } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) { |
| 275 | acpi_pcihp_device_plug_cb(hotplug_dev, &s->pcihp_state, dev, errp); |
| 276 | } else { |
| 277 | error_setg(errp, "virt: device plug request for unsupported device" |
| 278 | " type: %s", object_get_typename(OBJECT(dev))); |
| 279 | } |
| 280 | } |
| 281 | |
| 282 | static void acpi_ged_unplug_request_cb(HotplugHandler *hotplug_dev, |
| 283 | DeviceState *dev, Error **errp) |
| 284 | { |
| 285 | AcpiGedState *s = ACPI_GED(hotplug_dev); |
| 286 | |
| 287 | if ((object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM) && |
| 288 | !(object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM)))) { |
| 289 | acpi_memory_unplug_request_cb(hotplug_dev, &s->memhp_state, dev, errp); |
| 290 | } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) { |
| 291 | acpi_cpu_unplug_request_cb(hotplug_dev, &s->cpuhp_state, dev, errp); |
| 292 | } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) { |
| 293 | acpi_pcihp_device_unplug_request_cb(hotplug_dev, &s->pcihp_state, |
| 294 | dev, errp); |
| 295 | } else { |
| 296 | error_setg(errp, "acpi: device unplug request for unsupported device" |
| 297 | " type: %s", object_get_typename(OBJECT(dev))); |
| 298 | } |
| 299 | } |
| 300 | |
| 301 | static void acpi_ged_unplug_cb(HotplugHandler *hotplug_dev, |
| 302 | DeviceState *dev, Error **errp) |
| 303 | { |
| 304 | AcpiGedState *s = ACPI_GED(hotplug_dev); |
| 305 | |
| 306 | if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { |
| 307 | acpi_memory_unplug_cb(&s->memhp_state, dev, errp); |
| 308 | } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) { |
| 309 | acpi_cpu_unplug_cb(&s->cpuhp_state, dev, errp); |
| 310 | } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) { |
| 311 | acpi_pcihp_device_unplug_cb(hotplug_dev, &s->pcihp_state, dev, errp); |
| 312 | } else { |
| 313 | error_setg(errp, "acpi: device unplug for unsupported device" |
| 314 | " type: %s", object_get_typename(OBJECT(dev))); |
| 315 | } |
| 316 | } |
| 317 | |
| 318 | static void acpi_ged_ospm_status(AcpiDeviceIf *adev, ACPIOSTInfoList ***list) |
| 319 | { |
| 320 | AcpiGedState *s = ACPI_GED(adev); |
| 321 | |
| 322 | acpi_memory_ospm_status(&s->memhp_state, list); |
| 323 | acpi_cpu_ospm_status(&s->cpuhp_state, list); |
| 324 | } |
| 325 | |
| 326 | static void acpi_ged_send_event(AcpiDeviceIf *adev, AcpiEventStatusBits ev) |
| 327 | { |
| 328 | AcpiGedState *s = ACPI_GED(adev); |
| 329 | GEDState *ged_st = &s->ged_state; |
| 330 | uint32_t sel; |
| 331 | |
| 332 | if (ev & ACPI_MEMORY_HOTPLUG_STATUS) { |
| 333 | sel = ACPI_GED_MEM_HOTPLUG_EVT; |
| 334 | } else if (ev & ACPI_POWER_DOWN_STATUS) { |
| 335 | sel = ACPI_GED_PWR_DOWN_EVT; |
| 336 | } else if (ev & ACPI_GENERIC_ERROR) { |
| 337 | sel = ACPI_GED_ERROR_EVT; |
| 338 | } else if (ev & ACPI_NVDIMM_HOTPLUG_STATUS) { |
| 339 | sel = ACPI_GED_NVDIMM_HOTPLUG_EVT; |
| 340 | } else if (ev & ACPI_CPU_HOTPLUG_STATUS) { |
| 341 | sel = ACPI_GED_CPU_HOTPLUG_EVT; |
| 342 | } else if (ev & ACPI_PCI_HOTPLUG_STATUS) { |
| 343 | sel = ACPI_GED_PCI_HOTPLUG_EVT; |
| 344 | } else { |
| 345 | /* Unknown event. Return without generating interrupt. */ |
| 346 | warn_report("GED: Unsupported event %d. No irq injected", ev); |
| 347 | return; |
| 348 | } |
| 349 | |
| 350 | /* |
| 351 | * Set the GED selector field to communicate the event type. |
| 352 | * This will be read by GED aml code to select the appropriate |
| 353 | * event method. |
| 354 | */ |
| 355 | ged_st->sel |= sel; |
| 356 | |
| 357 | /* Trigger the event by sending an interrupt to the guest. */ |
| 358 | qemu_irq_pulse(s->irq); |
| 359 | } |
| 360 | |
| 361 | static const Property acpi_ged_properties[] = { |
| 362 | DEFINE_PROP_UINT32("ged-event", AcpiGedState, ged_event_bitmap, 0), |
| 363 | DEFINE_PROP_BOOL(ACPI_PM_PROP_ACPI_PCIHP_BRIDGE, AcpiGedState, |
| 364 | pcihp_state.use_acpi_hotplug_bridge, 0), |
| 365 | DEFINE_PROP_LINK("bus", AcpiGedState, pcihp_state.root, |
| 366 | TYPE_PCI_BUS, PCIBus *), |
| 367 | DEFINE_PROP_BOOL("x-has-hest-addr", AcpiGedState, |
| 368 | ghes_state.use_hest_addr, true), |
| 369 | }; |
| 370 | |
| 371 | static const VMStateDescription vmstate_memhp_state = { |
| 372 | .name = "acpi-ged/memhp", |
| 373 | .version_id = 1, |
| 374 | .minimum_version_id = 1, |
| 375 | .fields = (const VMStateField[]) { |
| 376 | VMSTATE_MEMORY_HOTPLUG(memhp_state, AcpiGedState), |
| 377 | VMSTATE_END_OF_LIST() |
| 378 | } |
| 379 | }; |
| 380 | |
| 381 | static bool cpuhp_needed(void *opaque) |
| 382 | { |
| 383 | MachineClass *mc = MACHINE_GET_CLASS(qdev_get_machine()); |
| 384 | |
| 385 | return mc->has_hotpluggable_cpus; |
| 386 | } |
| 387 | |
| 388 | static const VMStateDescription vmstate_cpuhp_state = { |
| 389 | .name = "acpi-ged/cpuhp", |
| 390 | .version_id = 1, |
| 391 | .minimum_version_id = 1, |
| 392 | .needed = cpuhp_needed, |
| 393 | .fields = (VMStateField[]) { |
| 394 | VMSTATE_CPU_HOTPLUG(cpuhp_state, AcpiGedState), |
| 395 | VMSTATE_END_OF_LIST() |
| 396 | } |
| 397 | }; |
| 398 | |
| 399 | static const VMStateDescription vmstate_ged_state = { |
| 400 | .name = "acpi-ged-state", |
| 401 | .version_id = 1, |
| 402 | .minimum_version_id = 1, |
| 403 | .fields = (const VMStateField[]) { |
| 404 | VMSTATE_UINT32(sel, GEDState), |
| 405 | VMSTATE_END_OF_LIST() |
| 406 | } |
| 407 | }; |
| 408 | |
| 409 | static const VMStateDescription vmstate_ghes = { |
| 410 | .name = "acpi-ghes", |
| 411 | .version_id = 1, |
| 412 | .minimum_version_id = 1, |
| 413 | .fields = (const VMStateField[]) { |
| 414 | VMSTATE_UINT64(hw_error_le, AcpiGhesState), |
| 415 | VMSTATE_END_OF_LIST() |
| 416 | }, |
| 417 | }; |
| 418 | |
| 419 | static bool ghes_needed(void *opaque) |
| 420 | { |
| 421 | AcpiGedState *s = opaque; |
| 422 | return s->ghes_state.hw_error_le; |
| 423 | } |
| 424 | |
| 425 | static const VMStateDescription vmstate_ghes_state = { |
| 426 | .name = "acpi-ged/ghes", |
| 427 | .version_id = 1, |
| 428 | .minimum_version_id = 1, |
| 429 | .needed = ghes_needed, |
| 430 | .fields = (const VMStateField[]) { |
| 431 | VMSTATE_STRUCT(ghes_state, AcpiGedState, 1, |
| 432 | vmstate_ghes, AcpiGhesState), |
| 433 | VMSTATE_END_OF_LIST() |
| 434 | } |
| 435 | }; |
| 436 | |
| 437 | static bool pcihp_needed(void *opaque) |
| 438 | { |
| 439 | AcpiGedState *s = opaque; |
| 440 | return s->pcihp_state.use_acpi_hotplug_bridge; |
| 441 | } |
| 442 | |
| 443 | static const VMStateDescription vmstate_pcihp_state = { |
| 444 | .name = "acpi-ged/pcihp", |
| 445 | .version_id = 1, |
| 446 | .minimum_version_id = 1, |
| 447 | .needed = pcihp_needed, |
| 448 | .fields = (const VMStateField[]) { |
| 449 | VMSTATE_PCI_HOTPLUG(pcihp_state, |
| 450 | AcpiGedState, |
| 451 | NULL, NULL), |
| 452 | VMSTATE_END_OF_LIST() |
| 453 | } |
| 454 | }; |
| 455 | |
| 456 | static const VMStateDescription vmstate_hest = { |
| 457 | .name = "acpi-hest", |
| 458 | .version_id = 1, |
| 459 | .minimum_version_id = 1, |
| 460 | .fields = (const VMStateField[]) { |
| 461 | VMSTATE_UINT64(hest_addr_le, AcpiGhesState), |
| 462 | VMSTATE_END_OF_LIST() |
| 463 | }, |
| 464 | }; |
| 465 | |
| 466 | static bool hest_needed(void *opaque) |
| 467 | { |
| 468 | AcpiGedState *s = opaque; |
| 469 | return s->ghes_state.hest_addr_le; |
| 470 | } |
| 471 | |
| 472 | static const VMStateDescription vmstate_hest_state = { |
| 473 | .name = "acpi-ged/hest", |
| 474 | .version_id = 1, |
| 475 | .minimum_version_id = 1, |
| 476 | .needed = hest_needed, |
| 477 | .fields = (const VMStateField[]) { |
| 478 | VMSTATE_STRUCT(ghes_state, AcpiGedState, 1, |
| 479 | vmstate_hest, AcpiGhesState), |
| 480 | VMSTATE_END_OF_LIST() |
| 481 | } |
| 482 | }; |
| 483 | |
| 484 | static const VMStateDescription vmstate_acpi_ged = { |
| 485 | .name = "acpi-ged", |
| 486 | .version_id = 1, |
| 487 | .minimum_version_id = 1, |
| 488 | .fields = (const VMStateField[]) { |
| 489 | VMSTATE_STRUCT(ged_state, AcpiGedState, 1, vmstate_ged_state, GEDState), |
| 490 | VMSTATE_END_OF_LIST(), |
| 491 | }, |
| 492 | .subsections = (const VMStateDescription * const []) { |
| 493 | &vmstate_memhp_state, |
| 494 | &vmstate_cpuhp_state, |
| 495 | &vmstate_ghes_state, |
| 496 | &vmstate_pcihp_state, |
| 497 | &vmstate_hest_state, |
| 498 | NULL |
| 499 | } |
| 500 | }; |
| 501 | |
| 502 | static void acpi_ged_realize(DeviceState *dev, Error **errp) |
| 503 | { |
| 504 | SysBusDevice *sbd = SYS_BUS_DEVICE(dev); |
| 505 | AcpiGedState *s = ACPI_GED(dev); |
| 506 | AcpiPciHpState *pcihp_state = &s->pcihp_state; |
| 507 | uint32_t ged_events; |
| 508 | int i; |
| 509 | |
| 510 | acpi_memory_hotplug_init(&s->container_memhp, OBJECT(dev), |
| 511 | &s->memhp_state, 0); |
| 512 | |
| 513 | if (pcihp_state->use_acpi_hotplug_bridge) { |
| 514 | s->ged_event_bitmap |= ACPI_GED_PCI_HOTPLUG_EVT; |
| 515 | } |
| 516 | ged_events = ctpop32(s->ged_event_bitmap); |
| 517 | |
| 518 | for (i = 0; i < ARRAY_SIZE(ged_supported_events) && ged_events; i++) { |
| 519 | uint32_t event = s->ged_event_bitmap & ged_supported_events[i]; |
| 520 | |
| 521 | if (!event) { |
| 522 | continue; |
| 523 | } |
| 524 | |
| 525 | switch (event) { |
| 526 | case ACPI_GED_CPU_HOTPLUG_EVT: |
| 527 | /* initialize CPU Hotplug related regions */ |
| 528 | memory_region_init(&s->container_cpuhp, OBJECT(dev), |
| 529 | "cpuhp container", |
| 530 | ACPI_CPU_HOTPLUG_REG_LEN); |
| 531 | sysbus_init_mmio(sbd, &s->container_cpuhp); |
| 532 | cpu_hotplug_hw_init(&s->container_cpuhp, OBJECT(dev), |
| 533 | &s->cpuhp_state, 0); |
| 534 | break; |
| 535 | case ACPI_GED_PCI_HOTPLUG_EVT: |
| 536 | memory_region_init(&s->container_pcihp, OBJECT(dev), |
| 537 | ACPI_PCIHP_REGION_NAME, ACPI_PCIHP_SIZE); |
| 538 | sysbus_init_mmio(sbd, &s->container_pcihp); |
| 539 | acpi_pcihp_init(OBJECT(s), &s->pcihp_state, |
| 540 | &s->container_pcihp, 0); |
| 541 | qbus_set_hotplug_handler(BUS(s->pcihp_state.root), OBJECT(dev)); |
| 542 | } |
| 543 | ged_events--; |
| 544 | } |
| 545 | |
| 546 | if (ged_events) { |
| 547 | error_report("Unsupported events specified"); |
| 548 | abort(); |
| 549 | } |
| 550 | } |
| 551 | |
| 552 | static void acpi_ged_initfn(Object *obj) |
| 553 | { |
| 554 | DeviceState *dev = DEVICE(obj); |
| 555 | AcpiGedState *s = ACPI_GED(dev); |
| 556 | SysBusDevice *sbd = SYS_BUS_DEVICE(obj); |
| 557 | GEDState *ged_st = &s->ged_state; |
| 558 | |
| 559 | memory_region_init_io(&ged_st->evt, obj, &ged_evt_ops, ged_st, |
| 560 | TYPE_ACPI_GED, ACPI_GED_EVT_SEL_LEN); |
| 561 | sysbus_init_mmio(sbd, &ged_st->evt); |
| 562 | |
| 563 | sysbus_init_irq(sbd, &s->irq); |
| 564 | |
| 565 | s->memhp_state.is_enabled = true; |
| 566 | /* |
| 567 | * GED handles memory hotplug event and acpi-mem-hotplug |
| 568 | * memory region gets initialized here. Create an exclusive |
| 569 | * container for memory hotplug IO and expose it as GED sysbus |
| 570 | * MMIO so that boards can map it separately. |
| 571 | */ |
| 572 | memory_region_init(&s->container_memhp, OBJECT(dev), "memhp container", |
| 573 | MEMORY_HOTPLUG_IO_LEN); |
| 574 | sysbus_init_mmio(sbd, &s->container_memhp); |
| 575 | |
| 576 | memory_region_init_io(&ged_st->regs, obj, &ged_regs_ops, ged_st, |
| 577 | TYPE_ACPI_GED "-regs", ACPI_GED_REG_COUNT); |
| 578 | sysbus_init_mmio(sbd, &ged_st->regs); |
| 579 | } |
| 580 | |
| 581 | static void ged_reset_hold(Object *obj, ResetType type) |
| 582 | { |
| 583 | AcpiGedState *s = ACPI_GED(obj); |
| 584 | |
| 585 | if (s->pcihp_state.use_acpi_hotplug_bridge) { |
| 586 | acpi_pcihp_reset(&s->pcihp_state); |
| 587 | } |
| 588 | } |
| 589 | |
| 590 | static void acpi_ged_class_init(ObjectClass *class, const void *data) |
| 591 | { |
| 592 | DeviceClass *dc = DEVICE_CLASS(class); |
| 593 | HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(class); |
| 594 | AcpiDeviceIfClass *adevc = ACPI_DEVICE_IF_CLASS(class); |
| 595 | ResettableClass *rc = RESETTABLE_CLASS(class); |
| 596 | AcpiGedClass *gedc = ACPI_GED_CLASS(class); |
| 597 | |
| 598 | dc->desc = "ACPI Generic Event Device"; |
| 599 | device_class_set_props(dc, acpi_ged_properties); |
| 600 | dc->vmsd = &vmstate_acpi_ged; |
| 601 | dc->realize = acpi_ged_realize; |
| 602 | |
| 603 | hc->pre_plug = acpi_ged_device_pre_plug_cb; |
| 604 | hc->plug = acpi_ged_device_plug_cb; |
| 605 | hc->unplug_request = acpi_ged_unplug_request_cb; |
| 606 | hc->unplug = acpi_ged_unplug_cb; |
| 607 | resettable_class_set_parent_phases(rc, NULL, ged_reset_hold, NULL, |
| 608 | &gedc->parent_phases); |
| 609 | |
| 610 | adevc->ospm_status = acpi_ged_ospm_status; |
| 611 | adevc->send_event = acpi_ged_send_event; |
| 612 | |
| 613 | object_class_property_add_uint16_ptr(class, ACPI_PCIHP_IO_BASE_PROP, |
| 614 | offsetof(AcpiGedState, |
| 615 | pcihp_state.io_base), |
| 616 | OBJ_PROP_FLAG_READ); |
| 617 | object_class_property_add_uint16_ptr(class, ACPI_PCIHP_IO_LEN_PROP, |
| 618 | offsetof(AcpiGedState, |
| 619 | pcihp_state.io_len), |
| 620 | OBJ_PROP_FLAG_READ); |
| 621 | } |
| 622 | |
| 623 | static const TypeInfo acpi_ged_info = { |
| 624 | .name = TYPE_ACPI_GED, |
| 625 | .parent = TYPE_SYS_BUS_DEVICE, |
| 626 | .instance_size = sizeof(AcpiGedState), |
| 627 | .instance_init = acpi_ged_initfn, |
| 628 | .class_init = acpi_ged_class_init, |
| 629 | .class_size = sizeof(AcpiGedClass), |
| 630 | .interfaces = (const InterfaceInfo[]) { |
| 631 | { TYPE_HOTPLUG_HANDLER }, |
| 632 | { TYPE_ACPI_DEVICE_IF }, |
| 633 | { } |
| 634 | } |
| 635 | }; |
| 636 | |
| 637 | static void acpi_ged_register_types(void) |
| 638 | { |
| 639 | type_register_static(&acpi_ged_info); |
| 640 | } |
| 641 | |
| 642 | type_init(acpi_ged_register_types) |