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qemu/hw/acpi/ich9.c
Bernhard Beschow 1a6981bbdc hw: Move ich9.h to southbridge/ 
ICH9 is a south bridge which doesn't necessarily depend on x86, so move
it into the southbridge folder, analoguous to PIIX.

Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230213173033.98762-13-shentey@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2023-02-27 22:29:01 +01:00

591 lines
20 KiB
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/*
* ACPI implementation
*
* Copyright (c) 2006 Fabrice Bellard
* Copyright (c) 2009 Isaku Yamahata <yamahata at valinux co jp>
* VA Linux Systems Japan K.K.
* Copyright (C) 2012 Jason Baron <jbaron@redhat.com>
*
* This is based on acpi.c.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1 as published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>
*
* Contributions after 2012-01-13 are licensed under the terms of the
* GNU GPL, version 2 or (at your option) any later version.
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "qapi/visitor.h"
#include "hw/pci/pci.h"
#include "migration/vmstate.h"
#include "qemu/timer.h"
#include "hw/core/cpu.h"
#include "sysemu/reset.h"
#include "sysemu/runstate.h"
#include "hw/acpi/acpi.h"
#include "hw/acpi/ich9_tco.h"
#include "hw/southbridge/ich9.h"
#include "hw/mem/pc-dimm.h"
#include "hw/mem/nvdimm.h"
//#define DEBUG
#ifdef DEBUG
#define ICH9_DEBUG(fmt, ...) \
do { printf("%s "fmt, __func__, ## __VA_ARGS__); } while (0)
#else
#define ICH9_DEBUG(fmt, ...) do { } while (0)
#endif
static void ich9_pm_update_sci_fn(ACPIREGS *regs)
{
ICH9LPCPMRegs *pm = container_of(regs, ICH9LPCPMRegs, acpi_regs);
acpi_update_sci(&pm->acpi_regs, pm->irq);
}
static uint64_t ich9_gpe_readb(void *opaque, hwaddr addr, unsigned width)
{
ICH9LPCPMRegs *pm = opaque;
return acpi_gpe_ioport_readb(&pm->acpi_regs, addr);
}
static void ich9_gpe_writeb(void *opaque, hwaddr addr, uint64_t val,
unsigned width)
{
ICH9LPCPMRegs *pm = opaque;
acpi_gpe_ioport_writeb(&pm->acpi_regs, addr, val);
acpi_update_sci(&pm->acpi_regs, pm->irq);
}
static const MemoryRegionOps ich9_gpe_ops = {
.read = ich9_gpe_readb,
.write = ich9_gpe_writeb,
.valid.min_access_size = 1,
.valid.max_access_size = 4,
.impl.min_access_size = 1,
.impl.max_access_size = 1,
.endianness = DEVICE_LITTLE_ENDIAN,
};
static uint64_t ich9_smi_readl(void *opaque, hwaddr addr, unsigned width)
{
ICH9LPCPMRegs *pm = opaque;
switch (addr) {
case 0:
return pm->smi_en;
case 4:
return pm->smi_sts;
default:
return 0;
}
}
static void ich9_smi_writel(void *opaque, hwaddr addr, uint64_t val,
unsigned width)
{
ICH9LPCPMRegs *pm = opaque;
TCOIORegs *tr = &pm->tco_regs;
uint64_t tco_en;
switch (addr) {
case 0:
tco_en = pm->smi_en & ICH9_PMIO_SMI_EN_TCO_EN;
/* once TCO_LOCK bit is set, TCO_EN bit cannot be overwritten */
if (tr->tco.cnt1 & TCO_LOCK) {
val = (val & ~ICH9_PMIO_SMI_EN_TCO_EN) | tco_en;
}
pm->smi_en &= ~pm->smi_en_wmask;
pm->smi_en |= (val & pm->smi_en_wmask);
break;
}
}
static const MemoryRegionOps ich9_smi_ops = {
.read = ich9_smi_readl,
.write = ich9_smi_writel,
.valid.min_access_size = 4,
.valid.max_access_size = 4,
.endianness = DEVICE_LITTLE_ENDIAN,
};
void ich9_pm_iospace_update(ICH9LPCPMRegs *pm, uint32_t pm_io_base)
{
ICH9_DEBUG("to 0x%x\n", pm_io_base);
assert((pm_io_base & ICH9_PMIO_MASK) == 0);
pm->pm_io_base = pm_io_base;
memory_region_transaction_begin();
memory_region_set_enabled(&pm->io, pm->pm_io_base != 0);
memory_region_set_address(&pm->io, pm->pm_io_base);
memory_region_transaction_commit();
}
static int ich9_pm_post_load(void *opaque, int version_id)
{
ICH9LPCPMRegs *pm = opaque;
uint32_t pm_io_base = pm->pm_io_base;
pm->pm_io_base = 0;
ich9_pm_iospace_update(pm, pm_io_base);
return 0;
}
#define VMSTATE_GPE_ARRAY(_field, _state) \
{ \
.name = (stringify(_field)), \
.version_id = 0, \
.num = ICH9_PMIO_GPE0_LEN, \
.info = &vmstate_info_uint8, \
.size = sizeof(uint8_t), \
.flags = VMS_ARRAY | VMS_POINTER, \
.offset = vmstate_offset_pointer(_state, _field, uint8_t), \
}
static bool vmstate_test_use_memhp(void *opaque)
{
ICH9LPCPMRegs *s = opaque;
return s->acpi_memory_hotplug.is_enabled;
}
static const VMStateDescription vmstate_memhp_state = {
.name = "ich9_pm/memhp",
.version_id = 1,
.minimum_version_id = 1,
.needed = vmstate_test_use_memhp,
.fields = (VMStateField[]) {
VMSTATE_MEMORY_HOTPLUG(acpi_memory_hotplug, ICH9LPCPMRegs),
VMSTATE_END_OF_LIST()
}
};
static bool vmstate_test_use_tco(void *opaque)
{
ICH9LPCPMRegs *s = opaque;
return s->enable_tco;
}
static const VMStateDescription vmstate_tco_io_state = {
.name = "ich9_pm/tco",
.version_id = 1,
.minimum_version_id = 1,
.needed = vmstate_test_use_tco,
.fields = (VMStateField[]) {
VMSTATE_STRUCT(tco_regs, ICH9LPCPMRegs, 1, vmstate_tco_io_sts,
TCOIORegs),
VMSTATE_END_OF_LIST()
}
};
static bool vmstate_test_use_cpuhp(void *opaque)
{
ICH9LPCPMRegs *s = opaque;
return !s->cpu_hotplug_legacy;
}
static int vmstate_cpuhp_pre_load(void *opaque)
{
ICH9LPCPMRegs *s = opaque;
Object *obj = OBJECT(s->gpe_cpu.device);
object_property_set_bool(obj, "cpu-hotplug-legacy", false, &error_abort);
return 0;
}
static const VMStateDescription vmstate_cpuhp_state = {
.name = "ich9_pm/cpuhp",
.version_id = 1,
.minimum_version_id = 1,
.needed = vmstate_test_use_cpuhp,
.pre_load = vmstate_cpuhp_pre_load,
.fields = (VMStateField[]) {
VMSTATE_CPU_HOTPLUG(cpuhp_state, ICH9LPCPMRegs),
VMSTATE_END_OF_LIST()
}
};
static bool vmstate_test_use_pcihp(void *opaque)
{
ICH9LPCPMRegs *s = opaque;
return s->use_acpi_hotplug_bridge;
}
static const VMStateDescription vmstate_pcihp_state = {
.name = "ich9_pm/pcihp",
.version_id = 1,
.minimum_version_id = 1,
.needed = vmstate_test_use_pcihp,
.fields = (VMStateField[]) {
VMSTATE_PCI_HOTPLUG(acpi_pci_hotplug,
ICH9LPCPMRegs,
NULL, NULL),
VMSTATE_END_OF_LIST()
}
};
const VMStateDescription vmstate_ich9_pm = {
.name = "ich9_pm",
.version_id = 1,
.minimum_version_id = 1,
.post_load = ich9_pm_post_load,
.fields = (VMStateField[]) {
VMSTATE_UINT16(acpi_regs.pm1.evt.sts, ICH9LPCPMRegs),
VMSTATE_UINT16(acpi_regs.pm1.evt.en, ICH9LPCPMRegs),
VMSTATE_UINT16(acpi_regs.pm1.cnt.cnt, ICH9LPCPMRegs),
VMSTATE_TIMER_PTR(acpi_regs.tmr.timer, ICH9LPCPMRegs),
VMSTATE_INT64(acpi_regs.tmr.overflow_time, ICH9LPCPMRegs),
VMSTATE_GPE_ARRAY(acpi_regs.gpe.sts, ICH9LPCPMRegs),
VMSTATE_GPE_ARRAY(acpi_regs.gpe.en, ICH9LPCPMRegs),
VMSTATE_UINT32(smi_en, ICH9LPCPMRegs),
VMSTATE_UINT32(smi_sts, ICH9LPCPMRegs),
VMSTATE_END_OF_LIST()
},
.subsections = (const VMStateDescription*[]) {
&vmstate_memhp_state,
&vmstate_tco_io_state,
&vmstate_cpuhp_state,
&vmstate_pcihp_state,
NULL
}
};
static void pm_reset(void *opaque)
{
ICH9LPCPMRegs *pm = opaque;
ich9_pm_iospace_update(pm, 0);
acpi_pm1_evt_reset(&pm->acpi_regs);
acpi_pm1_cnt_reset(&pm->acpi_regs);
acpi_pm_tmr_reset(&pm->acpi_regs);
acpi_gpe_reset(&pm->acpi_regs);
pm->smi_en = 0;
if (!pm->smm_enabled) {
/* Mark SMM as already inited to prevent SMM from running. */
pm->smi_en |= ICH9_PMIO_SMI_EN_APMC_EN;
}
pm->smi_en_wmask = ~0;
if (pm->use_acpi_hotplug_bridge) {
acpi_pcihp_reset(&pm->acpi_pci_hotplug, true);
}
acpi_update_sci(&pm->acpi_regs, pm->irq);
}
static void pm_powerdown_req(Notifier *n, void *opaque)
{
ICH9LPCPMRegs *pm = container_of(n, ICH9LPCPMRegs, powerdown_notifier);
acpi_pm1_evt_power_down(&pm->acpi_regs);
}
void ich9_pm_init(PCIDevice *lpc_pci, ICH9LPCPMRegs *pm, qemu_irq sci_irq)
{
memory_region_init(&pm->io, OBJECT(lpc_pci), "ich9-pm", ICH9_PMIO_SIZE);
memory_region_set_enabled(&pm->io, false);
memory_region_add_subregion(pci_address_space_io(lpc_pci),
0, &pm->io);
acpi_pm_tmr_init(&pm->acpi_regs, ich9_pm_update_sci_fn, &pm->io);
acpi_pm1_evt_init(&pm->acpi_regs, ich9_pm_update_sci_fn, &pm->io);
acpi_pm1_cnt_init(&pm->acpi_regs, &pm->io, pm->disable_s3, pm->disable_s4,
pm->s4_val, !pm->smm_compat && !pm->smm_enabled);
acpi_gpe_init(&pm->acpi_regs, ICH9_PMIO_GPE0_LEN);
memory_region_init_io(&pm->io_gpe, OBJECT(lpc_pci), &ich9_gpe_ops, pm,
"acpi-gpe0", ICH9_PMIO_GPE0_LEN);
memory_region_add_subregion(&pm->io, ICH9_PMIO_GPE0_STS, &pm->io_gpe);
memory_region_init_io(&pm->io_smi, OBJECT(lpc_pci), &ich9_smi_ops, pm,
"acpi-smi", 8);
memory_region_add_subregion(&pm->io, ICH9_PMIO_SMI_EN, &pm->io_smi);
if (pm->enable_tco) {
acpi_pm_tco_init(&pm->tco_regs, &pm->io);
}
if (pm->use_acpi_hotplug_bridge) {
acpi_pcihp_init(OBJECT(lpc_pci),
&pm->acpi_pci_hotplug,
pci_get_bus(lpc_pci),
pci_address_space_io(lpc_pci),
true,
ACPI_PCIHP_ADDR_ICH9);
qbus_set_hotplug_handler(BUS(pci_get_bus(lpc_pci)),
OBJECT(lpc_pci));
}
pm->irq = sci_irq;
qemu_register_reset(pm_reset, pm);
pm->powerdown_notifier.notify = pm_powerdown_req;
qemu_register_powerdown_notifier(&pm->powerdown_notifier);
legacy_acpi_cpu_hotplug_init(pci_address_space_io(lpc_pci),
OBJECT(lpc_pci), &pm->gpe_cpu, ICH9_CPU_HOTPLUG_IO_BASE);
if (pm->acpi_memory_hotplug.is_enabled) {
acpi_memory_hotplug_init(pci_address_space_io(lpc_pci), OBJECT(lpc_pci),
&pm->acpi_memory_hotplug,
ACPI_MEMORY_HOTPLUG_BASE);
}
}
static void ich9_pm_get_gpe0_blk(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
ICH9LPCPMRegs *pm = opaque;
uint32_t value = pm->pm_io_base + ICH9_PMIO_GPE0_STS;
visit_type_uint32(v, name, &value, errp);
}
static bool ich9_pm_get_memory_hotplug_support(Object *obj, Error **errp)
{
ICH9LPCState *s = ICH9_LPC_DEVICE(obj);
return s->pm.acpi_memory_hotplug.is_enabled;
}
static void ich9_pm_set_memory_hotplug_support(Object *obj, bool value,
Error **errp)
{
ICH9LPCState *s = ICH9_LPC_DEVICE(obj);
s->pm.acpi_memory_hotplug.is_enabled = value;
}
static bool ich9_pm_get_cpu_hotplug_legacy(Object *obj, Error **errp)
{
ICH9LPCState *s = ICH9_LPC_DEVICE(obj);
return s->pm.cpu_hotplug_legacy;
}
static void ich9_pm_set_cpu_hotplug_legacy(Object *obj, bool value,
Error **errp)
{
ICH9LPCState *s = ICH9_LPC_DEVICE(obj);
assert(!value);
if (s->pm.cpu_hotplug_legacy && value == false) {
acpi_switch_to_modern_cphp(&s->pm.gpe_cpu, &s->pm.cpuhp_state,
ICH9_CPU_HOTPLUG_IO_BASE);
}
s->pm.cpu_hotplug_legacy = value;
}
static bool ich9_pm_get_enable_tco(Object *obj, Error **errp)
{
ICH9LPCState *s = ICH9_LPC_DEVICE(obj);
return s->pm.enable_tco;
}
static void ich9_pm_set_enable_tco(Object *obj, bool value, Error **errp)
{
ICH9LPCState *s = ICH9_LPC_DEVICE(obj);
s->pm.enable_tco = value;
}
static bool ich9_pm_get_acpi_pci_hotplug(Object *obj, Error **errp)
{
ICH9LPCState *s = ICH9_LPC_DEVICE(obj);
return s->pm.use_acpi_hotplug_bridge;
}
static void ich9_pm_set_acpi_pci_hotplug(Object *obj, bool value, Error **errp)
{
ICH9LPCState *s = ICH9_LPC_DEVICE(obj);
s->pm.use_acpi_hotplug_bridge = value;
}
static bool ich9_pm_get_keep_pci_slot_hpc(Object *obj, Error **errp)
{
ICH9LPCState *s = ICH9_LPC_DEVICE(obj);
return s->pm.keep_pci_slot_hpc;
}
static void ich9_pm_set_keep_pci_slot_hpc(Object *obj, bool value, Error **errp)
{
ICH9LPCState *s = ICH9_LPC_DEVICE(obj);
s->pm.keep_pci_slot_hpc = value;
}
void ich9_pm_add_properties(Object *obj, ICH9LPCPMRegs *pm)
{
static const uint32_t gpe0_len = ICH9_PMIO_GPE0_LEN;
pm->acpi_memory_hotplug.is_enabled = true;
pm->cpu_hotplug_legacy = true;
pm->disable_s3 = 0;
pm->disable_s4 = 0;
pm->s4_val = 2;
pm->use_acpi_hotplug_bridge = true;
pm->keep_pci_slot_hpc = true;
pm->enable_tco = true;
object_property_add_uint32_ptr(obj, ACPI_PM_PROP_PM_IO_BASE,
&pm->pm_io_base, OBJ_PROP_FLAG_READ);
object_property_add(obj, ACPI_PM_PROP_GPE0_BLK, "uint32",
ich9_pm_get_gpe0_blk,
NULL, NULL, pm);
object_property_add_uint32_ptr(obj, ACPI_PM_PROP_GPE0_BLK_LEN,
&gpe0_len, OBJ_PROP_FLAG_READ);
object_property_add_bool(obj, "memory-hotplug-support",
ich9_pm_get_memory_hotplug_support,
ich9_pm_set_memory_hotplug_support);
object_property_add_bool(obj, "cpu-hotplug-legacy",
ich9_pm_get_cpu_hotplug_legacy,
ich9_pm_set_cpu_hotplug_legacy);
object_property_add_uint8_ptr(obj, ACPI_PM_PROP_S3_DISABLED,
&pm->disable_s3, OBJ_PROP_FLAG_READWRITE);
object_property_add_uint8_ptr(obj, ACPI_PM_PROP_S4_DISABLED,
&pm->disable_s4, OBJ_PROP_FLAG_READWRITE);
object_property_add_uint8_ptr(obj, ACPI_PM_PROP_S4_VAL,
&pm->s4_val, OBJ_PROP_FLAG_READWRITE);
object_property_add_bool(obj, ACPI_PM_PROP_TCO_ENABLED,
ich9_pm_get_enable_tco,
ich9_pm_set_enable_tco);
object_property_add_bool(obj, ACPI_PM_PROP_ACPI_PCIHP_BRIDGE,
ich9_pm_get_acpi_pci_hotplug,
ich9_pm_set_acpi_pci_hotplug);
object_property_add_bool(obj, "x-keep-pci-slot-hpc",
ich9_pm_get_keep_pci_slot_hpc,
ich9_pm_set_keep_pci_slot_hpc);
}
void ich9_pm_device_pre_plug_cb(HotplugHandler *hotplug_dev, DeviceState *dev,
Error **errp)
{
ICH9LPCState *lpc = ICH9_LPC_DEVICE(hotplug_dev);
if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
acpi_pcihp_device_pre_plug_cb(hotplug_dev, dev, errp);
return;
}
if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM) &&
!lpc->pm.acpi_memory_hotplug.is_enabled) {
error_setg(errp,
"memory hotplug is not enabled: %s.memory-hotplug-support "
"is not set", object_get_typename(OBJECT(lpc)));
} else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
uint64_t negotiated = lpc->smi_negotiated_features;
if (negotiated & BIT_ULL(ICH9_LPC_SMI_F_BROADCAST_BIT) &&
!(negotiated & BIT_ULL(ICH9_LPC_SMI_F_CPU_HOTPLUG_BIT))) {
error_setg(errp, "cpu hotplug with SMI wasn't enabled by firmware");
error_append_hint(errp, "update machine type to newer than 5.1 "
"and firmware that suppors CPU hotplug with SMM");
}
}
}
void ich9_pm_device_plug_cb(HotplugHandler *hotplug_dev, DeviceState *dev,
Error **errp)
{
ICH9LPCState *lpc = ICH9_LPC_DEVICE(hotplug_dev);
if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
if (object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM)) {
nvdimm_acpi_plug_cb(hotplug_dev, dev);
} else {
acpi_memory_plug_cb(hotplug_dev, &lpc->pm.acpi_memory_hotplug,
dev, errp);
}
} else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
if (lpc->pm.cpu_hotplug_legacy) {
legacy_acpi_cpu_plug_cb(hotplug_dev, &lpc->pm.gpe_cpu, dev, errp);
} else {
acpi_cpu_plug_cb(hotplug_dev, &lpc->pm.cpuhp_state, dev, errp);
}
} else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
acpi_pcihp_device_plug_cb(hotplug_dev, &lpc->pm.acpi_pci_hotplug,
dev, errp);
} else {
error_setg(errp, "acpi: device plug request for not supported device"
" type: %s", object_get_typename(OBJECT(dev)));
}
}
void ich9_pm_device_unplug_request_cb(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
ICH9LPCState *lpc = ICH9_LPC_DEVICE(hotplug_dev);
if (lpc->pm.acpi_memory_hotplug.is_enabled &&
object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
acpi_memory_unplug_request_cb(hotplug_dev,
&lpc->pm.acpi_memory_hotplug, dev,
errp);
} else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU) &&
!lpc->pm.cpu_hotplug_legacy) {
uint64_t negotiated = lpc->smi_negotiated_features;
if (negotiated & BIT_ULL(ICH9_LPC_SMI_F_BROADCAST_BIT) &&
!(negotiated & BIT_ULL(ICH9_LPC_SMI_F_CPU_HOT_UNPLUG_BIT))) {
error_setg(errp, "cpu hot-unplug with SMI wasn't enabled "
"by firmware");
error_append_hint(errp, "update machine type to a version having "
"x-smi-cpu-hotunplug=on and firmware that "
"supports CPU hot-unplug with SMM");
return;
}
acpi_cpu_unplug_request_cb(hotplug_dev, &lpc->pm.cpuhp_state,
dev, errp);
} else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
acpi_pcihp_device_unplug_request_cb(hotplug_dev,
&lpc->pm.acpi_pci_hotplug,
dev, errp);
} else {
error_setg(errp, "acpi: device unplug request for not supported device"
" type: %s", object_get_typename(OBJECT(dev)));
}
}
void ich9_pm_device_unplug_cb(HotplugHandler *hotplug_dev, DeviceState *dev,
Error **errp)
{
ICH9LPCState *lpc = ICH9_LPC_DEVICE(hotplug_dev);
if (lpc->pm.acpi_memory_hotplug.is_enabled &&
object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
acpi_memory_unplug_cb(&lpc->pm.acpi_memory_hotplug, dev, errp);
} else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU) &&
!lpc->pm.cpu_hotplug_legacy) {
acpi_cpu_unplug_cb(&lpc->pm.cpuhp_state, dev, errp);
} else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
acpi_pcihp_device_unplug_cb(hotplug_dev, &lpc->pm.acpi_pci_hotplug,
dev, errp);
} else {
error_setg(errp, "acpi: device unplug for not supported device"
" type: %s", object_get_typename(OBJECT(dev)));
}
}
void ich9_pm_ospm_status(AcpiDeviceIf *adev, ACPIOSTInfoList ***list)
{
ICH9LPCState *s = ICH9_LPC_DEVICE(adev);
acpi_memory_ospm_status(&s->pm.acpi_memory_hotplug, list);
if (!s->pm.cpu_hotplug_legacy) {
acpi_cpu_ospm_status(&s->pm.cpuhp_state, list);
}
}
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