5 files changed, 56 insertions, 0 deletions

diff --git a/include/hw/virtio/vhost-user-scmi.h b/include/hw/virtio/vhost-user-scmi.h
new file mode 100644
index 0000000000..6175a74ebd
--- /dev/null
+++ b/include/hw/virtio/vhost-user-scmi.h
@@ -0,0 +1,30 @@
+/*
+ * Vhost-user SCMI virtio device
+ *
+ * Copyright (c) 2023 Red Hat, Inc.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#ifndef _QEMU_VHOST_USER_SCMI_H
+#define _QEMU_VHOST_USER_SCMI_H
+
+#include "hw/virtio/virtio.h"
+#include "hw/virtio/vhost.h"
+#include "hw/virtio/vhost-user.h"
+
+#define TYPE_VHOST_USER_SCMI "vhost-user-scmi"
+OBJECT_DECLARE_SIMPLE_TYPE(VHostUserSCMI, VHOST_USER_SCMI);
+
+struct VHostUserSCMI {
+    VirtIODevice parent;
+    CharBackend chardev;
+    struct vhost_virtqueue *vhost_vqs;
+    struct vhost_dev vhost_dev;
+    VhostUserState vhost_user;
+    VirtQueue *cmd_vq;
+    VirtQueue *event_vq;
+    bool connected;
+};
+
+#endif /* _QEMU_VHOST_USER_SCMI_H */
diff --git a/include/hw/virtio/vhost.h b/include/hw/virtio/vhost.h
index f7f10c8fb7..6a173cb9fa 100644
--- a/include/hw/virtio/vhost.h
+++ b/include/hw/virtio/vhost.h
@@ -320,6 +320,7 @@ bool vhost_has_free_slot(void);
 int vhost_net_set_backend(struct vhost_dev *hdev,
                           struct vhost_vring_file *file);
 
+void vhost_toggle_device_iotlb(VirtIODevice *vdev);
 int vhost_device_iotlb_miss(struct vhost_dev *dev, uint64_t iova, int write);
 
 int vhost_virtqueue_start(struct vhost_dev *dev, struct VirtIODevice *vdev,
diff --git a/include/hw/virtio/virtio-gpu.h b/include/hw/virtio/virtio-gpu.h
index 7a5f8056ea..7ea8ae2bee 100644
--- a/include/hw/virtio/virtio-gpu.h
+++ b/include/hw/virtio/virtio-gpu.h
@@ -242,6 +242,8 @@ void virtio_gpu_base_reset(VirtIOGPUBase *g);
 void virtio_gpu_base_fill_display_info(VirtIOGPUBase *g,
                         struct virtio_gpu_resp_display_info *dpy_info);
 
+void virtio_gpu_base_generate_edid(VirtIOGPUBase *g, int scanout,
+                                   struct virtio_gpu_resp_edid *edid);
 /* virtio-gpu.c */
 void virtio_gpu_ctrl_response(VirtIOGPU *g,
                               struct virtio_gpu_ctrl_command *cmd,
diff --git a/include/hw/virtio/virtio-iommu.h b/include/hw/virtio/virtio-iommu.h
index 2ad5ee320b..a93fc5383e 100644
--- a/include/hw/virtio/virtio-iommu.h
+++ b/include/hw/virtio/virtio-iommu.h
@@ -61,6 +61,8 @@ struct VirtIOIOMMU {
     QemuRecMutex mutex;
     GTree *endpoints;
     bool boot_bypass;
+    Notifier machine_done;
+    bool granule_frozen;
 };
 
 #endif
diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h
index 0492d26900..c8f72850bc 100644
--- a/include/hw/virtio/virtio.h
+++ b/include/hw/virtio/virtio.h
@@ -150,10 +150,18 @@ struct VirtIODevice
     VMChangeStateEntry *vmstate;
     char *bus_name;
     uint8_t device_endian;
+    /**
+     * @user_guest_notifier_mask: gate usage of ->guest_notifier_mask() callback.
+     * This is used to suppress the masking of guest updates for
+     * vhost-user devices which are asynchronous by design.
+     */
     bool use_guest_notifier_mask;
     AddressSpace *dma_as;
     QLIST_HEAD(, VirtQueue) *vector_queues;
     QTAILQ_ENTRY(VirtIODevice) next;
+    /**
+     * @config_notifier: the event notifier that handles config events
+     */
     EventNotifier config_notifier;
     bool device_iotlb_enabled;
 };
@@ -219,6 +227,12 @@ struct VirtioDeviceClass {
 void virtio_instance_init_common(Object *proxy_obj, void *data,
                                  size_t vdev_size, const char *vdev_name);
 
+/**
+ * virtio_init() - initialise the common VirtIODevice structure
+ * @vdev: pointer to VirtIODevice
+ * @device_id: the VirtIO device ID (see virtio_ids.h)
+ * @config_size: size of the config space
+ */
 void virtio_init(VirtIODevice *vdev, uint16_t device_id, size_t config_size);
 
 void virtio_cleanup(VirtIODevice *vdev);
@@ -276,6 +290,13 @@ extern const VMStateInfo virtio_vmstate_info;
 
 int virtio_load(VirtIODevice *vdev, QEMUFile *f, int version_id);
 
+/**
+ * virtio_notify_config() - signal a change to device config
+ * @vdev: the virtio device
+ *
+ * Assuming the virtio device is up (VIRTIO_CONFIG_S_DRIVER_OK) this
+ * will trigger a guest interrupt and update the config version.
+ */
 void virtio_notify_config(VirtIODevice *vdev);
 
 bool virtio_queue_get_notification(VirtQueue *vq);