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qemu/hw/acpi/piix4.c
Dr. David Alan Gilbert a83c284490 acpi: fix acpi_index migration 
vmstate_acpi_pcihp_use_acpi_index() was expecting AcpiPciHpState
as state but it actually received PIIX4PMState, because
VMSTATE_PCI_HOTPLUG is a macro and not another struct.
So it ended up accessing random pointer, which resulted
in 'false' return value and acpi_index field wasn't ever
sent.

However in 7.0 that pointer de-references to value > 0, and
destination QEMU starts to expect the field which isn't
sent in migratioon stream from older QEMU (6.2 and older).
As result migration fails with:
  qemu-system-x86_64: Missing section footer for 0000:00:01.3/piix4_pm
  qemu-system-x86_64: load of migration failed: Invalid argument

In addition with QEMU-6.2, destination due to not expected
state, also never expects the acpi_index field in migration
stream.

Q35 is not affected as it always sends/expects the field as
long as acpi based PCI hotplug is enabled.

Fix issue by introducing compat knob to never send/expect
acpi_index in migration stream for 6.2 and older PC machine
types and always send it for 7.0 and newer PC machine types.

Diagnosed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Fixes: b32bd76 ("pci: introduce acpi-index property for PCI device")
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/932
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-04-06 20:03:26 +01:00

722 lines
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/*
* ACPI implementation
*
* Copyright (c) 2006 Fabrice Bellard
*
* 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 "hw/i386/pc.h"
#include "hw/southbridge/piix.h"
#include "hw/irq.h"
#include "hw/isa/apm.h"
#include "hw/i2c/pm_smbus.h"
#include "hw/pci/pci.h"
#include "hw/qdev-properties.h"
#include "hw/acpi/acpi.h"
#include "sysemu/runstate.h"
#include "sysemu/sysemu.h"
#include "sysemu/xen.h"
#include "qapi/error.h"
#include "qemu/range.h"
#include "hw/acpi/pcihp.h"
#include "hw/acpi/cpu_hotplug.h"
#include "hw/acpi/cpu.h"
#include "hw/hotplug.h"
#include "hw/mem/pc-dimm.h"
#include "hw/mem/nvdimm.h"
#include "hw/acpi/memory_hotplug.h"
#include "hw/acpi/acpi_dev_interface.h"
#include "migration/vmstate.h"
#include "hw/core/cpu.h"
#include "trace.h"
#include "qom/object.h"
#define GPE_BASE 0xafe0
#define GPE_LEN 4
#define ACPI_PCIHP_ADDR_PIIX4 0xae00
struct pci_status {
uint32_t up; /* deprecated, maintained for migration compatibility */
uint32_t down;
};
struct PIIX4PMState {
/*< private >*/
PCIDevice parent_obj;
/*< public >*/
MemoryRegion io;
uint32_t io_base;
MemoryRegion io_gpe;
ACPIREGS ar;
APMState apm;
PMSMBus smb;
uint32_t smb_io_base;
qemu_irq irq;
qemu_irq smi_irq;
int smm_enabled;
bool smm_compat;
Notifier machine_ready;
Notifier powerdown_notifier;
AcpiPciHpState acpi_pci_hotplug;
bool use_acpi_hotplug_bridge;
bool use_acpi_root_pci_hotplug;
bool not_migrate_acpi_index;
uint8_t disable_s3;
uint8_t disable_s4;
uint8_t s4_val;
bool cpu_hotplug_legacy;
AcpiCpuHotplug gpe_cpu;
CPUHotplugState cpuhp_state;
MemHotplugState acpi_memory_hotplug;
};
OBJECT_DECLARE_SIMPLE_TYPE(PIIX4PMState, PIIX4_PM)
static void piix4_acpi_system_hot_add_init(MemoryRegion *parent,
PCIBus *bus, PIIX4PMState *s);
#define ACPI_ENABLE 0xf1
#define ACPI_DISABLE 0xf0
static void pm_tmr_timer(ACPIREGS *ar)
{
PIIX4PMState *s = container_of(ar, PIIX4PMState, ar);
acpi_update_sci(&s->ar, s->irq);
}
static void apm_ctrl_changed(uint32_t val, void *arg)
{
PIIX4PMState *s = arg;
PCIDevice *d = PCI_DEVICE(s);
/* ACPI specs 3.0, 4.7.2.5 */
acpi_pm1_cnt_update(&s->ar, val == ACPI_ENABLE, val == ACPI_DISABLE);
if (val == ACPI_ENABLE || val == ACPI_DISABLE) {
return;
}
if (d->config[0x5b] & (1 << 1)) {
if (s->smi_irq) {
qemu_irq_raise(s->smi_irq);
}
}
}
static void pm_io_space_update(PIIX4PMState *s)
{
PCIDevice *d = PCI_DEVICE(s);
s->io_base = le32_to_cpu(*(uint32_t *)(d->config + 0x40));
s->io_base &= 0xffc0;
memory_region_transaction_begin();
memory_region_set_enabled(&s->io, d->config[0x80] & 1);
memory_region_set_address(&s->io, s->io_base);
memory_region_transaction_commit();
}
static void smbus_io_space_update(PIIX4PMState *s)
{
PCIDevice *d = PCI_DEVICE(s);
s->smb_io_base = le32_to_cpu(*(uint32_t *)(d->config + 0x90));
s->smb_io_base &= 0xffc0;
memory_region_transaction_begin();
memory_region_set_enabled(&s->smb.io, d->config[0xd2] & 1);
memory_region_set_address(&s->smb.io, s->smb_io_base);
memory_region_transaction_commit();
}
static void pm_write_config(PCIDevice *d,
uint32_t address, uint32_t val, int len)
{
pci_default_write_config(d, address, val, len);
if (range_covers_byte(address, len, 0x80) ||
ranges_overlap(address, len, 0x40, 4)) {
pm_io_space_update((PIIX4PMState *)d);
}
if (range_covers_byte(address, len, 0xd2) ||
ranges_overlap(address, len, 0x90, 4)) {
smbus_io_space_update((PIIX4PMState *)d);
}
}
static int vmstate_acpi_post_load(void *opaque, int version_id)
{
PIIX4PMState *s = opaque;
pm_io_space_update(s);
smbus_io_space_update(s);
return 0;
}
#define VMSTATE_GPE_ARRAY(_field, _state) \
{ \
.name = (stringify(_field)), \
.version_id = 0, \
.info = &vmstate_info_uint16, \
.size = sizeof(uint16_t), \
.flags = VMS_SINGLE | VMS_POINTER, \
.offset = vmstate_offset_pointer(_state, _field, uint8_t), \
}
static const VMStateDescription vmstate_gpe = {
.name = "gpe",
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_GPE_ARRAY(sts, ACPIGPE),
VMSTATE_GPE_ARRAY(en, ACPIGPE),
VMSTATE_END_OF_LIST()
}
};
static const VMStateDescription vmstate_pci_status = {
.name = "pci_status",
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_UINT32(up, struct AcpiPciHpPciStatus),
VMSTATE_UINT32(down, struct AcpiPciHpPciStatus),
VMSTATE_END_OF_LIST()
}
};
static bool vmstate_test_use_acpi_hotplug_bridge(void *opaque, int version_id)
{
PIIX4PMState *s = opaque;
return s->use_acpi_hotplug_bridge;
}
static bool vmstate_test_no_use_acpi_hotplug_bridge(void *opaque,
int version_id)
{
PIIX4PMState *s = opaque;
return !s->use_acpi_hotplug_bridge;
}
static bool vmstate_test_use_memhp(void *opaque)
{
PIIX4PMState *s = opaque;
return s->acpi_memory_hotplug.is_enabled;
}
static const VMStateDescription vmstate_memhp_state = {
.name = "piix4_pm/memhp",
.version_id = 1,
.minimum_version_id = 1,
.needed = vmstate_test_use_memhp,
.fields = (VMStateField[]) {
VMSTATE_MEMORY_HOTPLUG(acpi_memory_hotplug, PIIX4PMState),
VMSTATE_END_OF_LIST()
}
};
static bool vmstate_test_use_cpuhp(void *opaque)
{
PIIX4PMState *s = opaque;
return !s->cpu_hotplug_legacy;
}
static int vmstate_cpuhp_pre_load(void *opaque)
{
Object *obj = OBJECT(opaque);
object_property_set_bool(obj, "cpu-hotplug-legacy", false, &error_abort);
return 0;
}
static const VMStateDescription vmstate_cpuhp_state = {
.name = "piix4_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, PIIX4PMState),
VMSTATE_END_OF_LIST()
}
};
static bool piix4_vmstate_need_smbus(void *opaque, int version_id)
{
return pm_smbus_vmstate_needed();
}
/*
* This is a fudge to turn off the acpi_index field,
* whose test was always broken on piix4 with 6.2 and older machine types.
*/
static bool vmstate_test_migrate_acpi_index(void *opaque, int version_id)
{
PIIX4PMState *s = PIIX4_PM(opaque);
return s->use_acpi_hotplug_bridge && !s->not_migrate_acpi_index;
}
/* qemu-kvm 1.2 uses version 3 but advertised as 2
* To support incoming qemu-kvm 1.2 migration, change version_id
* and minimum_version_id to 2 below (which breaks migration from
* qemu 1.2).
*
*/
static const VMStateDescription vmstate_acpi = {
.name = "piix4_pm",
.version_id = 3,
.minimum_version_id = 3,
.post_load = vmstate_acpi_post_load,
.fields = (VMStateField[]) {
VMSTATE_PCI_DEVICE(parent_obj, PIIX4PMState),
VMSTATE_UINT16(ar.pm1.evt.sts, PIIX4PMState),
VMSTATE_UINT16(ar.pm1.evt.en, PIIX4PMState),
VMSTATE_UINT16(ar.pm1.cnt.cnt, PIIX4PMState),
VMSTATE_STRUCT(apm, PIIX4PMState, 0, vmstate_apm, APMState),
VMSTATE_STRUCT_TEST(smb, PIIX4PMState, piix4_vmstate_need_smbus, 3,
pmsmb_vmstate, PMSMBus),
VMSTATE_TIMER_PTR(ar.tmr.timer, PIIX4PMState),
VMSTATE_INT64(ar.tmr.overflow_time, PIIX4PMState),
VMSTATE_STRUCT(ar.gpe, PIIX4PMState, 2, vmstate_gpe, ACPIGPE),
VMSTATE_STRUCT_TEST(
acpi_pci_hotplug.acpi_pcihp_pci_status[ACPI_PCIHP_BSEL_DEFAULT],
PIIX4PMState,
vmstate_test_no_use_acpi_hotplug_bridge,
2, vmstate_pci_status,
struct AcpiPciHpPciStatus),
VMSTATE_PCI_HOTPLUG(acpi_pci_hotplug, PIIX4PMState,
vmstate_test_use_acpi_hotplug_bridge,
vmstate_test_migrate_acpi_index),
VMSTATE_END_OF_LIST()
},
.subsections = (const VMStateDescription*[]) {
&vmstate_memhp_state,
&vmstate_cpuhp_state,
NULL
}
};
static void piix4_pm_reset(DeviceState *dev)
{
PIIX4PMState *s = PIIX4_PM(dev);
PCIDevice *d = PCI_DEVICE(s);
uint8_t *pci_conf = d->config;
pci_conf[0x58] = 0;
pci_conf[0x59] = 0;
pci_conf[0x5a] = 0;
pci_conf[0x5b] = 0;
pci_conf[0x40] = 0x01; /* PM io base read only bit */
pci_conf[0x80] = 0;
if (!s->smm_enabled) {
/* Mark SMM as already inited (until KVM supports SMM). */
pci_conf[0x5B] = 0x02;
}
acpi_pm1_evt_reset(&s->ar);
acpi_pm1_cnt_reset(&s->ar);
acpi_pm_tmr_reset(&s->ar);
acpi_gpe_reset(&s->ar);
acpi_update_sci(&s->ar, s->irq);
pm_io_space_update(s);
acpi_pcihp_reset(&s->acpi_pci_hotplug, !s->use_acpi_root_pci_hotplug);
}
static void piix4_pm_powerdown_req(Notifier *n, void *opaque)
{
PIIX4PMState *s = container_of(n, PIIX4PMState, powerdown_notifier);
assert(s != NULL);
acpi_pm1_evt_power_down(&s->ar);
}
static void piix4_device_pre_plug_cb(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
PIIX4PMState *s = PIIX4_PM(hotplug_dev);
if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
acpi_pcihp_device_pre_plug_cb(hotplug_dev, dev, errp);
} else if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
if (!s->acpi_memory_hotplug.is_enabled) {
error_setg(errp,
"memory hotplug is not enabled: %s.memory-hotplug-support "
"is not set", object_get_typename(OBJECT(s)));
}
} else if (
!object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
error_setg(errp, "acpi: device pre plug request for not supported"
" device type: %s", object_get_typename(OBJECT(dev)));
}
}
static void piix4_device_plug_cb(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
PIIX4PMState *s = PIIX4_PM(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, &s->acpi_memory_hotplug,
dev, errp);
}
} else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
acpi_pcihp_device_plug_cb(hotplug_dev, &s->acpi_pci_hotplug, dev, errp);
} else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
if (s->cpu_hotplug_legacy) {
legacy_acpi_cpu_plug_cb(hotplug_dev, &s->gpe_cpu, dev, errp);
} else {
acpi_cpu_plug_cb(hotplug_dev, &s->cpuhp_state, dev, errp);
}
} else {
g_assert_not_reached();
}
}
static void piix4_device_unplug_request_cb(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
PIIX4PMState *s = PIIX4_PM(hotplug_dev);
if (s->acpi_memory_hotplug.is_enabled &&
object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
acpi_memory_unplug_request_cb(hotplug_dev, &s->acpi_memory_hotplug,
dev, errp);
} else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
acpi_pcihp_device_unplug_request_cb(hotplug_dev, &s->acpi_pci_hotplug,
dev, errp);
} else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU) &&
!s->cpu_hotplug_legacy) {
acpi_cpu_unplug_request_cb(hotplug_dev, &s->cpuhp_state, dev, errp);
} else {
error_setg(errp, "acpi: device unplug request for not supported device"
" type: %s", object_get_typename(OBJECT(dev)));
}
}
static void piix4_device_unplug_cb(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
PIIX4PMState *s = PIIX4_PM(hotplug_dev);
if (s->acpi_memory_hotplug.is_enabled &&
object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
acpi_memory_unplug_cb(&s->acpi_memory_hotplug, dev, errp);
} else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
acpi_pcihp_device_unplug_cb(hotplug_dev, &s->acpi_pci_hotplug, dev,
errp);
} else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU) &&
!s->cpu_hotplug_legacy) {
acpi_cpu_unplug_cb(&s->cpuhp_state, dev, errp);
} else {
error_setg(errp, "acpi: device unplug for not supported device"
" type: %s", object_get_typename(OBJECT(dev)));
}
}
static void piix4_pm_machine_ready(Notifier *n, void *opaque)
{
PIIX4PMState *s = container_of(n, PIIX4PMState, machine_ready);
PCIDevice *d = PCI_DEVICE(s);
MemoryRegion *io_as = pci_address_space_io(d);
uint8_t *pci_conf;
pci_conf = d->config;
pci_conf[0x5f] = 0x10 |
(memory_region_present(io_as, 0x378) ? 0x80 : 0);
pci_conf[0x63] = 0x60;
pci_conf[0x67] = (memory_region_present(io_as, 0x3f8) ? 0x08 : 0) |
(memory_region_present(io_as, 0x2f8) ? 0x90 : 0);
}
static void piix4_pm_add_properties(PIIX4PMState *s)
{
static const uint8_t acpi_enable_cmd = ACPI_ENABLE;
static const uint8_t acpi_disable_cmd = ACPI_DISABLE;
static const uint32_t gpe0_blk = GPE_BASE;
static const uint32_t gpe0_blk_len = GPE_LEN;
static const uint16_t sci_int = 9;
object_property_add_uint8_ptr(OBJECT(s), ACPI_PM_PROP_ACPI_ENABLE_CMD,
&acpi_enable_cmd, OBJ_PROP_FLAG_READ);
object_property_add_uint8_ptr(OBJECT(s), ACPI_PM_PROP_ACPI_DISABLE_CMD,
&acpi_disable_cmd, OBJ_PROP_FLAG_READ);
object_property_add_uint32_ptr(OBJECT(s), ACPI_PM_PROP_GPE0_BLK,
&gpe0_blk, OBJ_PROP_FLAG_READ);
object_property_add_uint32_ptr(OBJECT(s), ACPI_PM_PROP_GPE0_BLK_LEN,
&gpe0_blk_len, OBJ_PROP_FLAG_READ);
object_property_add_uint16_ptr(OBJECT(s), ACPI_PM_PROP_SCI_INT,
&sci_int, OBJ_PROP_FLAG_READ);
object_property_add_uint32_ptr(OBJECT(s), ACPI_PM_PROP_PM_IO_BASE,
&s->io_base, OBJ_PROP_FLAG_READ);
}
static void piix4_pm_realize(PCIDevice *dev, Error **errp)
{
PIIX4PMState *s = PIIX4_PM(dev);
uint8_t *pci_conf;
pci_conf = dev->config;
pci_conf[0x06] = 0x80;
pci_conf[0x07] = 0x02;
pci_conf[0x09] = 0x00;
pci_conf[0x3d] = 0x01; // interrupt pin 1
/* APM */
apm_init(dev, &s->apm, apm_ctrl_changed, s);
if (!s->smm_enabled) {
/* Mark SMM as already inited to prevent SMM from running. KVM does not
* support SMM mode. */
pci_conf[0x5B] = 0x02;
}
/* XXX: which specification is used ? The i82731AB has different
mappings */
pci_conf[0x90] = s->smb_io_base | 1;
pci_conf[0x91] = s->smb_io_base >> 8;
pci_conf[0xd2] = 0x09;
pm_smbus_init(DEVICE(dev), &s->smb, true);
memory_region_set_enabled(&s->smb.io, pci_conf[0xd2] & 1);
memory_region_add_subregion(pci_address_space_io(dev),
s->smb_io_base, &s->smb.io);
memory_region_init(&s->io, OBJECT(s), "piix4-pm", 64);
memory_region_set_enabled(&s->io, false);
memory_region_add_subregion(pci_address_space_io(dev),
0, &s->io);
acpi_pm_tmr_init(&s->ar, pm_tmr_timer, &s->io);
acpi_pm1_evt_init(&s->ar, pm_tmr_timer, &s->io);
acpi_pm1_cnt_init(&s->ar, &s->io, s->disable_s3, s->disable_s4, s->s4_val,
!s->smm_compat && !s->smm_enabled);
acpi_gpe_init(&s->ar, GPE_LEN);
s->powerdown_notifier.notify = piix4_pm_powerdown_req;
qemu_register_powerdown_notifier(&s->powerdown_notifier);
s->machine_ready.notify = piix4_pm_machine_ready;
qemu_add_machine_init_done_notifier(&s->machine_ready);
piix4_acpi_system_hot_add_init(pci_address_space_io(dev),
pci_get_bus(dev), s);
qbus_set_hotplug_handler(BUS(pci_get_bus(dev)), OBJECT(s));
piix4_pm_add_properties(s);
}
I2CBus *piix4_pm_init(PCIBus *bus, int devfn, uint32_t smb_io_base,
qemu_irq sci_irq, qemu_irq smi_irq,
int smm_enabled, DeviceState **piix4_pm)
{
PCIDevice *pci_dev;
DeviceState *dev;
PIIX4PMState *s;
pci_dev = pci_new(devfn, TYPE_PIIX4_PM);
dev = DEVICE(pci_dev);
qdev_prop_set_uint32(dev, "smb_io_base", smb_io_base);
if (piix4_pm) {
*piix4_pm = dev;
}
s = PIIX4_PM(dev);
s->irq = sci_irq;
s->smi_irq = smi_irq;
s->smm_enabled = smm_enabled;
if (xen_enabled()) {
s->use_acpi_hotplug_bridge = false;
}
pci_realize_and_unref(pci_dev, bus, &error_fatal);
return s->smb.smbus;
}
static uint64_t gpe_readb(void *opaque, hwaddr addr, unsigned width)
{
PIIX4PMState *s = opaque;
uint32_t val = acpi_gpe_ioport_readb(&s->ar, addr);
trace_piix4_gpe_readb(addr, width, val);
return val;
}
static void gpe_writeb(void *opaque, hwaddr addr, uint64_t val,
unsigned width)
{
PIIX4PMState *s = opaque;
trace_piix4_gpe_writeb(addr, width, val);
acpi_gpe_ioport_writeb(&s->ar, addr, val);
acpi_update_sci(&s->ar, s->irq);
}
static const MemoryRegionOps piix4_gpe_ops = {
.read = gpe_readb,
.write = 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 bool piix4_get_cpu_hotplug_legacy(Object *obj, Error **errp)
{
PIIX4PMState *s = PIIX4_PM(obj);
return s->cpu_hotplug_legacy;
}
static void piix4_set_cpu_hotplug_legacy(Object *obj, bool value, Error **errp)
{
PIIX4PMState *s = PIIX4_PM(obj);
assert(!value);
if (s->cpu_hotplug_legacy && value == false) {
acpi_switch_to_modern_cphp(&s->gpe_cpu, &s->cpuhp_state,
PIIX4_CPU_HOTPLUG_IO_BASE);
}
s->cpu_hotplug_legacy = value;
}
static void piix4_acpi_system_hot_add_init(MemoryRegion *parent,
PCIBus *bus, PIIX4PMState *s)
{
memory_region_init_io(&s->io_gpe, OBJECT(s), &piix4_gpe_ops, s,
"acpi-gpe0", GPE_LEN);
memory_region_add_subregion(parent, GPE_BASE, &s->io_gpe);
if (s->use_acpi_hotplug_bridge || s->use_acpi_root_pci_hotplug) {
acpi_pcihp_init(OBJECT(s), &s->acpi_pci_hotplug, bus, parent,
s->use_acpi_hotplug_bridge, ACPI_PCIHP_ADDR_PIIX4);
}
s->cpu_hotplug_legacy = true;
object_property_add_bool(OBJECT(s), "cpu-hotplug-legacy",
piix4_get_cpu_hotplug_legacy,
piix4_set_cpu_hotplug_legacy);
legacy_acpi_cpu_hotplug_init(parent, OBJECT(s), &s->gpe_cpu,
PIIX4_CPU_HOTPLUG_IO_BASE);
if (s->acpi_memory_hotplug.is_enabled) {
acpi_memory_hotplug_init(parent, OBJECT(s), &s->acpi_memory_hotplug,
ACPI_MEMORY_HOTPLUG_BASE);
}
}
static void piix4_ospm_status(AcpiDeviceIf *adev, ACPIOSTInfoList ***list)
{
PIIX4PMState *s = PIIX4_PM(adev);
acpi_memory_ospm_status(&s->acpi_memory_hotplug, list);
if (!s->cpu_hotplug_legacy) {
acpi_cpu_ospm_status(&s->cpuhp_state, list);
}
}
static void piix4_send_gpe(AcpiDeviceIf *adev, AcpiEventStatusBits ev)
{
PIIX4PMState *s = PIIX4_PM(adev);
acpi_send_gpe_event(&s->ar, s->irq, ev);
}
static Property piix4_pm_properties[] = {
DEFINE_PROP_UINT32("smb_io_base", PIIX4PMState, smb_io_base, 0),
DEFINE_PROP_UINT8(ACPI_PM_PROP_S3_DISABLED, PIIX4PMState, disable_s3, 0),
DEFINE_PROP_UINT8(ACPI_PM_PROP_S4_DISABLED, PIIX4PMState, disable_s4, 0),
DEFINE_PROP_UINT8(ACPI_PM_PROP_S4_VAL, PIIX4PMState, s4_val, 2),
DEFINE_PROP_BOOL(ACPI_PM_PROP_ACPI_PCIHP_BRIDGE, PIIX4PMState,
use_acpi_hotplug_bridge, true),
DEFINE_PROP_BOOL(ACPI_PM_PROP_ACPI_PCI_ROOTHP, PIIX4PMState,
use_acpi_root_pci_hotplug, true),
DEFINE_PROP_BOOL("memory-hotplug-support", PIIX4PMState,
acpi_memory_hotplug.is_enabled, true),
DEFINE_PROP_BOOL("smm-compat", PIIX4PMState, smm_compat, false),
DEFINE_PROP_BOOL("x-not-migrate-acpi-index", PIIX4PMState,
not_migrate_acpi_index, false),
DEFINE_PROP_END_OF_LIST(),
};
static void piix4_pm_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass);
AcpiDeviceIfClass *adevc = ACPI_DEVICE_IF_CLASS(klass);
k->realize = piix4_pm_realize;
k->config_write = pm_write_config;
k->vendor_id = PCI_VENDOR_ID_INTEL;
k->device_id = PCI_DEVICE_ID_INTEL_82371AB_3;
k->revision = 0x03;
k->class_id = PCI_CLASS_BRIDGE_OTHER;
dc->reset = piix4_pm_reset;
dc->desc = "PM";
dc->vmsd = &vmstate_acpi;
device_class_set_props(dc, piix4_pm_properties);
/*
* Reason: part of PIIX4 southbridge, needs to be wired up,
* e.g. by mips_malta_init()
*/
dc->user_creatable = false;
dc->hotpluggable = false;
hc->pre_plug = piix4_device_pre_plug_cb;
hc->plug = piix4_device_plug_cb;
hc->unplug_request = piix4_device_unplug_request_cb;
hc->unplug = piix4_device_unplug_cb;
adevc->ospm_status = piix4_ospm_status;
adevc->send_event = piix4_send_gpe;
adevc->madt_cpu = pc_madt_cpu_entry;
}
static const TypeInfo piix4_pm_info = {
.name = TYPE_PIIX4_PM,
.parent = TYPE_PCI_DEVICE,
.instance_size = sizeof(PIIX4PMState),
.class_init = piix4_pm_class_init,
.interfaces = (InterfaceInfo[]) {
{ TYPE_HOTPLUG_HANDLER },
{ TYPE_ACPI_DEVICE_IF },
{ INTERFACE_CONVENTIONAL_PCI_DEVICE },
{ }
}
};
static void piix4_pm_register_types(void)
{
type_register_static(&piix4_pm_info);
}
type_init(piix4_pm_register_types)
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