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qemu-e2k/hw/acpi/piix4.c
David Hildenbrand c97adf3ccf pci/pcihp: perform unplug via the hotplug handler 
Introduce and use the "unplug" callback.

This is a preparation for multi-stage hotplug handlers, whereby the bus
hotplug handler is overwritten by the machine hotplug handler. This handler
will then pass control to the bus hotplug handler. So to get this running
cleanly, we also have to make sure to go via the hotplug handler chain when
actually unplugging a device after an unplug request. Lookup the hotplug
handler and call "unplug".

Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-12-20 11:19:12 -05:00

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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 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/hw.h"
#include "hw/i386/pc.h"
#include "hw/isa/apm.h"
#include "hw/i2c/pm_smbus.h"
#include "hw/pci/pci.h"
#include "hw/acpi/acpi.h"
#include "sysemu/sysemu.h"
#include "qapi/error.h"
#include "qemu/range.h"
#include "hw/nvram/fw_cfg.h"
#include "exec/address-spaces.h"
#include "hw/acpi/piix4.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/acpi/memory_hotplug.h"
#include "hw/acpi/acpi_dev_interface.h"
#include "hw/xen/xen.h"
#include "qom/cpu.h"
//#define DEBUG
#ifdef DEBUG
# define PIIX4_DPRINTF(format, ...) printf(format, ## __VA_ARGS__)
#else
# define PIIX4_DPRINTF(format, ...) do { } while (0)
#endif
#define GPE_BASE 0xafe0
#define GPE_LEN 4
struct pci_status {
uint32_t up; /* deprecated, maintained for migration compatibility */
uint32_t down;
};
typedef 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;
Notifier machine_ready;
Notifier powerdown_notifier;
AcpiPciHpState acpi_pci_hotplug;
bool use_acpi_pci_hotplug;
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;
} PIIX4PMState;
#define TYPE_PIIX4_PM "PIIX4_PM"
#define PIIX4_PM(obj) \
OBJECT_CHECK(PIIX4PMState, (obj), TYPE_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 int acpi_load_old(QEMUFile *f, void *opaque, int version_id)
{
PIIX4PMState *s = opaque;
int ret, i;
uint16_t temp;
ret = pci_device_load(PCI_DEVICE(s), f);
if (ret < 0) {
return ret;
}
qemu_get_be16s(f, &s->ar.pm1.evt.sts);
qemu_get_be16s(f, &s->ar.pm1.evt.en);
qemu_get_be16s(f, &s->ar.pm1.cnt.cnt);
ret = vmstate_load_state(f, &vmstate_apm, &s->apm, 1);
if (ret) {
return ret;
}
timer_get(f, s->ar.tmr.timer);
qemu_get_sbe64s(f, &s->ar.tmr.overflow_time);
qemu_get_be16s(f, (uint16_t *)s->ar.gpe.sts);
for (i = 0; i < 3; i++) {
qemu_get_be16s(f, &temp);
}
qemu_get_be16s(f, (uint16_t *)s->ar.gpe.en);
for (i = 0; i < 3; i++) {
qemu_get_be16s(f, &temp);
}
ret = vmstate_load_state(f, &vmstate_pci_status,
&s->acpi_pci_hotplug.acpi_pcihp_pci_status[ACPI_PCIHP_BSEL_DEFAULT], 1);
return ret;
}
static bool vmstate_test_use_acpi_pci_hotplug(void *opaque, int version_id)
{
PIIX4PMState *s = opaque;
return s->use_acpi_pci_hotplug;
}
static bool vmstate_test_no_use_acpi_pci_hotplug(void *opaque, int version_id)
{
PIIX4PMState *s = opaque;
return !s->use_acpi_pci_hotplug;
}
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,
.minimum_version_id_old = 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, false, "cpu-hotplug-legacy", &error_abort);
return 0;
}
static const VMStateDescription vmstate_cpuhp_state = {
.name = "piix4_pm/cpuhp",
.version_id = 1,
.minimum_version_id = 1,
.minimum_version_id_old = 1,
.needed = vmstate_test_use_cpuhp,
.pre_load = vmstate_cpuhp_pre_load,
.fields = (VMStateField[]) {
VMSTATE_CPU_HOTPLUG(cpuhp_state, PIIX4PMState),
VMSTATE_END_OF_LIST()
}
};
/* 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,
.minimum_version_id_old = 1,
.load_state_old = acpi_load_old,
.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_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_pci_hotplug,
2, vmstate_pci_status,
struct AcpiPciHpPciStatus),
VMSTATE_PCI_HOTPLUG(acpi_pci_hotplug, PIIX4PMState,
vmstate_test_use_acpi_pci_hotplug),
VMSTATE_END_OF_LIST()
},
.subsections = (const VMStateDescription*[]) {
&vmstate_memhp_state,
&vmstate_cpuhp_state,
NULL
}
};
static void piix4_reset(void *opaque)
{
PIIX4PMState *s = opaque;
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;
}
pm_io_space_update(s);
acpi_pcihp_reset(&s->acpi_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)
{
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) &&
!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 (s->acpi_memory_hotplug.is_enabled &&
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_propeties(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, NULL);
object_property_add_uint8_ptr(OBJECT(s), ACPI_PM_PROP_ACPI_DISABLE_CMD,
&acpi_disable_cmd, NULL);
object_property_add_uint32_ptr(OBJECT(s), ACPI_PM_PROP_GPE0_BLK,
&gpe0_blk, NULL);
object_property_add_uint32_ptr(OBJECT(s), ACPI_PM_PROP_GPE0_BLK_LEN,
&gpe0_blk_len, NULL);
object_property_add_uint16_ptr(OBJECT(s), ACPI_PM_PROP_SCI_INT,
&sci_int, NULL);
object_property_add_uint32_ptr(OBJECT(s), ACPI_PM_PROP_PM_IO_BASE,
&s->io_base, NULL);
}
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);
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);
qemu_register_reset(piix4_reset, s);
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)), DEVICE(s), &error_abort);
piix4_pm_add_propeties(s);
}
Object *piix4_pm_find(void)
{
bool ambig;
Object *o = object_resolve_path_type("", TYPE_PIIX4_PM, &ambig);
if (ambig || !o) {
return NULL;
}
return o;
}
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)
{
DeviceState *dev;
PIIX4PMState *s;
dev = DEVICE(pci_create(bus, devfn, TYPE_PIIX4_PM));
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_pci_hotplug = false;
}
qdev_init_nofail(dev);
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);
PIIX4_DPRINTF("gpe read %" HWADDR_PRIx " == %" PRIu32 "\n", addr, val);
return val;
}
static void gpe_writeb(void *opaque, hwaddr addr, uint64_t val,
unsigned width)
{
PIIX4PMState *s = opaque;
acpi_gpe_ioport_writeb(&s->ar, addr, val);
acpi_update_sci(&s->ar, s->irq);
PIIX4_DPRINTF("gpe write %" HWADDR_PRIx " <== %" PRIu64 "\n", addr, val);
}
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);
acpi_pcihp_init(OBJECT(s), &s->acpi_pci_hotplug, bus, parent,
s->use_acpi_pci_hotplug);
s->cpu_hotplug_legacy = true;
object_property_add_bool(OBJECT(s), "cpu-hotplug-legacy",
piix4_get_cpu_hotplug_legacy,
piix4_set_cpu_hotplug_legacy,
NULL);
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-pci-hotplug-with-bridge-support", PIIX4PMState,
use_acpi_pci_hotplug, true),
DEFINE_PROP_BOOL("memory-hotplug-support", PIIX4PMState,
acpi_memory_hotplug.is_enabled, true),
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->desc = "PM";
dc->vmsd = &vmstate_acpi;
dc->props = 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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