6 files changed, 56 insertions, 0 deletions
diff --git a/include/hw/acpi/ich9.h b/include/hw/acpi/ich9.h
index 2faf7f0cae..245fe08dc2 100644
--- a/include/hw/acpi/ich9.h
+++ b/include/hw/acpi/ich9.h
@@ -46,6 +46,7 @@ typedef struct ICH9LPCPMRegs {
     uint32_t smi_en;
     uint32_t smi_en_wmask;
     uint32_t smi_sts;
+    uint32_t smi_sts_wmask;
 
     qemu_irq irq;      /* SCI */
 
@@ -68,6 +69,11 @@ typedef struct ICH9LPCPMRegs {
     bool smm_compat;
     bool enable_tco;
     TCOIORegs tco_regs;
+
+    bool swsmi_timer_enabled;
+    bool periodic_timer_enabled;
+    QEMUTimer *swsmi_timer;
+    QEMUTimer *periodic_timer;
 } ICH9LPCPMRegs;
 
 #define ACPI_PM_PROP_TCO_ENABLED "enable_tco"
diff --git a/include/hw/acpi/ich9_timer.h b/include/hw/acpi/ich9_timer.h
new file mode 100644
index 0000000000..5112df4385
--- /dev/null
+++ b/include/hw/acpi/ich9_timer.h
@@ -0,0 +1,23 @@
+/*
+ * QEMU ICH9 Timer emulation
+ *
+ * Copyright (c) 2024 Dominic Prinz <git@dprinz.de>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#ifndef HW_ACPI_ICH9_TIMER_H
+#define HW_ACPI_ICH9_TIMER_H
+
+#include "hw/acpi/ich9.h"
+
+void ich9_pm_update_swsmi_timer(ICH9LPCPMRegs *pm, bool enable);
+
+void ich9_pm_swsmi_timer_init(ICH9LPCPMRegs *pm);
+
+void ich9_pm_update_periodic_timer(ICH9LPCPMRegs *pm, bool enable);
+
+void ich9_pm_periodic_timer_init(ICH9LPCPMRegs *pm);
+
+#endif
diff --git a/include/hw/irq.h b/include/hw/irq.h
index 645b73d251..c861c1debd 100644
--- a/include/hw/irq.h
+++ b/include/hw/irq.h
@@ -1,9 +1,20 @@
 #ifndef QEMU_IRQ_H
 #define QEMU_IRQ_H
 
+#include "qom/object.h"
+
 /* Generic IRQ/GPIO pin infrastructure.  */
 
 #define TYPE_IRQ "irq"
+OBJECT_DECLARE_SIMPLE_TYPE(IRQState, IRQ)
+
+struct IRQState {
+    Object parent_obj;
+
+    qemu_irq_handler handler;
+    void *opaque;
+    int n;
+};
 
 void qemu_set_irq(qemu_irq irq, int level);
 
@@ -23,6 +34,13 @@ static inline void qemu_irq_pulse(qemu_irq irq)
     qemu_set_irq(irq, 0);
 }
 
+/*
+ * Init a single IRQ. The irq is assigned with a handler, an opaque data
+ * and the interrupt number.
+ */
+void qemu_init_irq(IRQState *irq, qemu_irq_handler handler, void *opaque,
+                   int n);
+
 /* Returns an array of N IRQs. Each IRQ is assigned the argument handler and
  * opaque data.
  */
diff --git a/include/hw/southbridge/ich9.h b/include/hw/southbridge/ich9.h
index fd01649d04..6c60017024 100644
--- a/include/hw/southbridge/ich9.h
+++ b/include/hw/southbridge/ich9.h
@@ -196,8 +196,12 @@ struct ICH9LPCState {
 #define ICH9_PMIO_GPE0_LEN                      16
 #define ICH9_PMIO_SMI_EN                        0x30
 #define ICH9_PMIO_SMI_EN_APMC_EN                (1 << 5)
+#define ICH9_PMIO_SMI_EN_SWSMI_EN               (1 << 6)
 #define ICH9_PMIO_SMI_EN_TCO_EN                 (1 << 13)
+#define ICH9_PMIO_SMI_EN_PERIODIC_EN            (1 << 14)
 #define ICH9_PMIO_SMI_STS                       0x34
+#define ICH9_PMIO_SMI_STS_SWSMI_STS             (1 << 6)
+#define ICH9_PMIO_SMI_STS_PERIODIC_STS          (1 << 14)
 #define ICH9_PMIO_TCO_RLD                       0x60
 #define ICH9_PMIO_TCO_LEN                       32
 
diff --git a/include/hw/virtio/vhost.h b/include/hw/virtio/vhost.h
index d75faf46e9..c75be46c06 100644
--- a/include/hw/virtio/vhost.h
+++ b/include/hw/virtio/vhost.h
@@ -171,6 +171,10 @@ int vhost_dev_init(struct vhost_dev *hdev, void *opaque,
  */
 void vhost_dev_cleanup(struct vhost_dev *hdev);
 
+void vhost_dev_disable_notifiers_nvqs(struct vhost_dev *hdev,
+                                      VirtIODevice *vdev,
+                                      unsigned int nvqs);
+
 /**
  * vhost_dev_enable_notifiers() - enable event notifiers
  * @hdev: common vhost_dev structure
diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h
index 0fcbc5c0c6..f526ecc8fc 100644
--- a/include/hw/virtio/virtio.h
+++ b/include/hw/virtio/virtio.h
@@ -223,6 +223,7 @@ struct VirtioDeviceClass {
     int (*post_load)(VirtIODevice *vdev);
     const VMStateDescription *vmsd;
     bool (*primary_unplug_pending)(void *opaque);
+    /* May be called even when vdev->vhost_started is false */
     struct vhost_dev *(*get_vhost)(VirtIODevice *vdev);
     void (*toggle_device_iotlb)(VirtIODevice *vdev);
 };