acpi:ich9: add memory hotplug handling

Add memory hotplug initialization/handling to ICH9 LPC device
and enable it by default for post 2.0 machine types

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Igor Mammedov 2014-06-02 15:25:22 +02:00 committed by Michael S. Tsirkin
parent d6b38b6611
commit 1f8621842e
4 changed files with 68 additions and 1 deletions

View file

@ -34,6 +34,7 @@
#include "exec/address-spaces.h"
#include "hw/i386/ich9.h"
#include "hw/mem/pc-dimm.h"
//#define DEBUG
@ -223,6 +224,11 @@ void ich9_pm_init(PCIDevice *lpc_pci, ICH9LPCPMRegs *pm,
&pm->gpe_cpu, ICH9_CPU_HOTPLUG_IO_BASE);
pm->cpu_added_notifier.notify = ich9_cpu_added_req;
qemu_register_cpu_added_notifier(&pm->cpu_added_notifier);
if (pm->acpi_memory_hotplug.is_enabled) {
acpi_memory_hotplug_init(pci_address_space_io(lpc_pci), OBJECT(lpc_pci),
&pm->acpi_memory_hotplug);
}
}
static void ich9_pm_get_gpe0_blk(Object *obj, Visitor *v,
@ -235,9 +241,25 @@ static void ich9_pm_get_gpe0_blk(Object *obj, Visitor *v,
visit_type_uint32(v, &value, name, 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;
}
void ich9_pm_add_properties(Object *obj, ICH9LPCPMRegs *pm, Error **errp)
{
static const uint32_t gpe0_len = ICH9_PMIO_GPE0_LEN;
pm->acpi_memory_hotplug.is_enabled = true;
object_property_add_uint32_ptr(obj, ACPI_PM_PROP_PM_IO_BASE,
&pm->pm_io_base, errp);
@ -246,4 +268,20 @@ void ich9_pm_add_properties(Object *obj, ICH9LPCPMRegs *pm, Error **errp)
NULL, NULL, pm, NULL);
object_property_add_uint32_ptr(obj, ACPI_PM_PROP_GPE0_BLK_LEN,
&gpe0_len, errp);
object_property_add_bool(obj, "memory-hotplug-support",
ich9_pm_get_memory_hotplug_support,
ich9_pm_set_memory_hotplug_support,
NULL);
}
void ich9_pm_device_plug_cb(ICH9LPCPMRegs *pm, DeviceState *dev, Error **errp)
{
if (pm->acpi_memory_hotplug.is_enabled &&
object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
acpi_memory_plug_cb(&pm->acpi_regs, pm->irq, &pm->acpi_memory_hotplug,
dev, errp);
} else {
error_setg(errp, "acpi: device plug request for not supported device"
" type: %s", object_get_typename(OBJECT(dev)));
}
}

View file

@ -599,6 +599,19 @@ static int ich9_lpc_init(PCIDevice *d)
return 0;
}
static void ich9_device_plug_cb(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
ICH9LPCState *lpc = ICH9_LPC_DEVICE(hotplug_dev);
ich9_pm_device_plug_cb(&lpc->pm, dev, errp);
}
static void ich9_device_unplug_cb(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
}
static bool ich9_rst_cnt_needed(void *opaque)
{
ICH9LPCState *lpc = opaque;
@ -642,6 +655,7 @@ static void ich9_lpc_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass);
set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
dc->reset = ich9_lpc_reset;
@ -658,6 +672,8 @@ static void ich9_lpc_class_init(ObjectClass *klass, void *data)
* pc_q35_init()
*/
dc->cannot_instantiate_with_device_add_yet = true;
hc->plug = ich9_device_plug_cb;
hc->unplug = ich9_device_unplug_cb;
}
static const TypeInfo ich9_lpc_info = {
@ -666,6 +682,10 @@ static const TypeInfo ich9_lpc_info = {
.instance_size = sizeof(struct ICH9LPCState),
.instance_init = ich9_lpc_initfn,
.class_init = ich9_lpc_class_init,
.interfaces = (InterfaceInfo[]) {
{ TYPE_HOTPLUG_HANDLER },
{ }
}
};
static void ich9_lpc_register(void)

View file

@ -23,6 +23,7 @@
#include "hw/acpi/acpi.h"
#include "hw/acpi/cpu_hotplug.h"
#include "hw/acpi/memory_hotplug.h"
typedef struct ICH9LPCPMRegs {
/*
@ -46,6 +47,8 @@ typedef struct ICH9LPCPMRegs {
AcpiCpuHotplug gpe_cpu;
Notifier cpu_added_notifier;
MemHotplugState acpi_memory_hotplug;
} ICH9LPCPMRegs;
void ich9_pm_init(PCIDevice *lpc_pci, ICH9LPCPMRegs *pm,
@ -55,4 +58,5 @@ extern const VMStateDescription vmstate_ich9_pm;
void ich9_pm_add_properties(Object *obj, ICH9LPCPMRegs *pm, Error **errp);
void ich9_pm_device_plug_cb(ICH9LPCPMRegs *pm, DeviceState *dev, Error **errp);
#endif /* HW_ACPI_ICH9_H */

View file

@ -286,7 +286,12 @@ int e820_get_num_entries(void);
bool e820_get_entry(int, uint32_t, uint64_t *, uint64_t *);
#define PC_Q35_COMPAT_2_0 \
PC_COMPAT_2_0
PC_COMPAT_2_0, \
{\
.driver = "ICH9 LPC",\
.property = "memory-hotplug-support",\
.value = "off",\
}
#define PC_Q35_COMPAT_1_7 \
PC_COMPAT_1_7, \