Add virtio-sound device stub

Add a new VIRTIO device for the virtio sound device id. Functionality
will be added in the following commits.

Based-on: https://github.com/OpenSynergy/qemu/commit/5a2f350eec5d157b90d9c7b40a8e603f4da92471
Signed-off-by: Igor Skalkin <Igor.Skalkin@opensynergy.com>
Signed-off-by: Anton Yakovlev <Anton.Yakovlev@opensynergy.com>
Signed-off-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <f9678a41fe97b5886c1b04795f1be046509de866.1698062525.git.manos.pitsidianakis@linaro.org>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

1 files changed, 79 insertions, 0 deletions

diff --git a/include/hw/audio/virtio-snd.h b/include/hw/audio/virtio-snd.h
new file mode 100644
index 0000000000..d08065941c
--- /dev/null
+++ b/include/hw/audio/virtio-snd.h
@@ -0,0 +1,79 @@
+/*
+ * VIRTIO Sound Device conforming to
+ *
+ * "Virtual I/O Device (VIRTIO) Version 1.2
+ * Committee Specification Draft 01
+ * 09 May 2022"
+ *
+ * Copyright (c) 2023 Emmanouil Pitsidianakis <manos.pitsidianakis@linaro.org>
+ * Copyright (C) 2019 OpenSynergy GmbH
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or
+ * (at your option) any later version.  See the COPYING file in the
+ * top-level directory.
+ */
+
+#ifndef QEMU_VIRTIO_SOUND_H
+#define QEMU_VIRTIO_SOUND_H
+
+#include "hw/virtio/virtio.h"
+#include "audio/audio.h"
+#include "standard-headers/linux/virtio_ids.h"
+#include "standard-headers/linux/virtio_snd.h"
+
+#define TYPE_VIRTIO_SND "virtio-sound-device"
+#define VIRTIO_SND(obj) \
+        OBJECT_CHECK(VirtIOSound, (obj), TYPE_VIRTIO_SND)
+
+/* CONFIGURATION SPACE */
+
+typedef struct virtio_snd_config virtio_snd_config;
+
+/* COMMON DEFINITIONS */
+
+/* common header for request/response*/
+typedef struct virtio_snd_hdr virtio_snd_hdr;
+
+/* event notification */
+typedef struct virtio_snd_event virtio_snd_event;
+
+/* common control request to query an item information */
+typedef struct virtio_snd_query_info virtio_snd_query_info;
+
+/* JACK CONTROL MESSAGES */
+
+typedef struct virtio_snd_jack_hdr virtio_snd_jack_hdr;
+
+/* jack information structure */
+typedef struct virtio_snd_jack_info virtio_snd_jack_info;
+
+/* jack remapping control request */
+typedef struct virtio_snd_jack_remap virtio_snd_jack_remap;
+
+/*
+ * PCM CONTROL MESSAGES
+ */
+typedef struct virtio_snd_pcm_hdr virtio_snd_pcm_hdr;
+
+/* PCM stream info structure */
+typedef struct virtio_snd_pcm_info virtio_snd_pcm_info;
+
+/* set PCM stream params */
+typedef struct virtio_snd_pcm_set_params virtio_snd_pcm_set_params;
+
+/* I/O request header */
+typedef struct virtio_snd_pcm_xfer virtio_snd_pcm_xfer;
+
+/* I/O request status */
+typedef struct virtio_snd_pcm_status virtio_snd_pcm_status;
+
+typedef struct VirtIOSound {
+    VirtIODevice parent_obj;
+
+    VirtQueue *queues[VIRTIO_SND_VQ_MAX];
+    uint64_t features;
+    QEMUSoundCard card;
+    VMChangeStateEntry *vmstate;
+    virtio_snd_config snd_conf;
+} VirtIOSound;
+#endif