@@ -28,6 +28,8 @@
#include "qapi-visit.h"
#include "qapi-event.h"
+#define ACPI_VM_GENERATION_ID_CHANGED_STATUS 1
+
struct acpi_table_header {
uint16_t _length; /* our length, not actual part of the hdr */
/* allows easier parsing for fw_cfg clients */
@@ -683,3 +685,9 @@ void acpi_update_sci(ACPIREGS *regs, qemu_irq irq)
(regs->pm1.evt.en & ACPI_BITMASK_TIMER_ENABLE) &&
!(pm1a_sts & ACPI_BITMASK_TIMER_STATUS));
}
+
+void acpi_vm_generation_id_changed(ACPIREGS *acpi_regs, qemu_irq irq)
+{
+ acpi_regs->gpe.sts[0] |= ACPI_VM_GENERATION_ID_CHANGED_STATUS;
+ acpi_update_sci(acpi_regs, irq);
+}
@@ -417,3 +417,11 @@ void ich9_pm_ospm_status(AcpiDeviceIf *adev, ACPIOSTInfoList ***list)
acpi_memory_ospm_status(&s->pm.acpi_memory_hotplug, list);
}
+
+void ich9_vm_generation_id_changed(AcpiDeviceIf *adev)
+{
+ ICH9LPCState *s = ICH9_LPC_DEVICE(adev);
+ ICH9LPCPMRegs *pm = &s->pm;
+
+ acpi_vm_generation_id_changed(&pm->acpi_regs, pm->irq);
+}
@@ -580,6 +580,13 @@ static void piix4_ospm_status(AcpiDeviceIf *adev, ACPIOSTInfoList ***list)
acpi_memory_ospm_status(&s->acpi_memory_hotplug, list);
}
+static void piix4_vm_generation_id_changed(AcpiDeviceIf *adev)
+{
+ PIIX4PMState *s = PIIX4_PM(adev);
+
+ acpi_vm_generation_id_changed(&s->ar, s->irq);
+}
+
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),
@@ -618,6 +625,7 @@ static void piix4_pm_class_init(ObjectClass *klass, void *data)
hc->unplug_request = piix4_device_unplug_request_cb;
hc->unplug = piix4_device_unplug_cb;
adevc->ospm_status = piix4_ospm_status;
+ adevc->vm_generation_id_changed = piix4_vm_generation_id_changed;
}
static const TypeInfo piix4_pm_info = {
@@ -688,6 +688,7 @@ static void ich9_lpc_class_init(ObjectClass *klass, void *data)
hc->unplug_request = ich9_device_unplug_request_cb;
hc->unplug = ich9_device_unplug_cb;
adevc->ospm_status = ich9_pm_ospm_status;
+ adevc->vm_generation_id_changed = ich9_vm_generation_id_changed;
}
static const TypeInfo ich9_lpc_info = {
@@ -185,4 +185,6 @@ unsigned acpi_table_len(void *current);
void acpi_table_add(const QemuOpts *opts, Error **errp);
void acpi_table_add_builtin(const QemuOpts *opts, Error **errp);
+void acpi_vm_generation_id_changed(ACPIREGS *acpi_regs, qemu_irq irq);
+
#endif /* !QEMU_HW_ACPI_H */
@@ -28,6 +28,9 @@ typedef struct AcpiDeviceIf {
* ospm_status: returns status of ACPI device objects, reported
* via _OST method if device supports it.
*
+ * vm_generation_id_changed: notify the guest that it generation
+ * id was changed.
+ *
* Interface is designed for providing unified interface
* to generic ACPI functionality that could be used without
* knowledge about internals of actual device that implements
@@ -39,5 +42,6 @@ typedef struct AcpiDeviceIfClass {
/* <public> */
void (*ospm_status)(AcpiDeviceIf *adev, ACPIOSTInfoList ***list);
+ void (*vm_generation_id_changed)(AcpiDeviceIf *adev);
} AcpiDeviceIfClass;
#endif
@@ -69,4 +69,6 @@ void ich9_pm_device_unplug_cb(ICH9LPCPMRegs *pm, DeviceState *dev,
Error **errp);
void ich9_pm_ospm_status(AcpiDeviceIf *adev, ACPIOSTInfoList ***list);
+
+void ich9_vm_generation_id_changed(AcpiDeviceIf *adev);
#endif /* HW_ACPI_ICH9_H */
Add a new method to the AcpiDeviceIfClass interface. The new method send an ACPI notfication when the VM generation id is changed. Signed-off-by: Gal Hammer <ghammer@redhat.com> --- hw/acpi/core.c | 8 ++++++++ hw/acpi/ich9.c | 8 ++++++++ hw/acpi/piix4.c | 8 ++++++++ hw/isa/lpc_ich9.c | 1 + include/hw/acpi/acpi.h | 2 ++ include/hw/acpi/acpi_dev_interface.h | 4 ++++ include/hw/acpi/ich9.h | 2 ++ 7 files changed, 33 insertions(+)