[RFC PATCH 01/27] virtio-snd: Add virtio sound header file

[Shreyansh Chouhan <chouhan.shreyansh2702@gmail.com>]

Added device configuration and common definitions to the header
file.

Signed-off-by: Shreyansh Chouhan <chouhan.shreyansh2702@gmail.com>
---
 include/hw/virtio/virtio-snd.h | 97 ++++++++++++++++++++++++++++++++++
 1 file changed, 97 insertions(+)
 create mode 100644 include/hw/virtio/virtio-snd.h

diff --git a/include/hw/virtio/virtio-snd.h b/include/hw/virtio/virtio-snd.h
new file mode 100644
index 0000000000..bbbf174c51
--- /dev/null
+++ b/include/hw/virtio/virtio-snd.h
@@ -0,0 +1,97 @@
+/*
+ * Virtio Sound Device
+ */
+
+#ifndef QEMU_VIRTIO_SOUND_H
+#define QEMU_VIRTIO_SOUND_H
+
+#include "qemu/units.h"
+#include "hw/virtio/virtio.h"
+#include "qemu/queue.h"
+#include "audio/audio.h"
+#include "audio/audio_int.h"
+
+#define VIRTIO_ID_SOUND 25
+
+/* CONFIGURATION SPACE */
+
+typedef struct virtio_snd_config {
+    /* # of jacks available */
+    uint32_t jacks;
+    /* # of streams avalable */
+    uint32_t streams;
+    /* # chmaps available */
+    uint32_t chmaps;
+} virtio_snd_config;
+
+/* COMMON DEFINITIONS */
+
+/* supported sample data directions. */
+enum {
+    VIRTIO_SND_D_OUTPUT = 0,
+    VIRTIO_SND_D_INPUT
+};
+
+enum {
+    /* jack control request types */
+    VIRTIO_SND_R_JACK_INFO = 1,
+    VIRTIO_SND_R_JACK_REMAP,
+
+    /* PCM control request types */
+    VIRTIO_SND_R_PCM_INFO = 0x0100,
+    VIRTIO_SND_R_PCM_SET_PARAMS,
+    VIRTIO_SND_R_PCM_PREPARE,
+    VIRTIO_SND_R_PCM_RELEASE,
+    VIRTIO_SND_R_PCM_START,
+    VIRTIO_SND_R_PCM_STOP,
+
+    /* channel map control request type */
+    VIRTIO_SND_R_CHMAP_INFO = 0x200,
+
+    /* jack event types */
+    VIRTIO_SND_EVT_JACK_CONNECTED = 0x1000,
+    VIRTIO_SND_EVT_JACK_DISCONNECTED,
+
+    /* PCM event types */
+    VIRTIO_SND_EVT_PCM_PERIOD_ELAPSED = 0x1100,
+    VIRTIO_SND_EVT_PCM_XRUN,
+
+    /* common status codes */
+    VIRTIO_SND_S_OK = 0x8000,
+    VIRTIO_SND_S_BAD_MSG,
+    VIRTIO_SND_S_NOT_SUPP,
+    VIRTIO_SND_S_IO_ERR
+};
+
+/* common header for request/response*/
+typedef struct virtio_snd_hdr {
+    uint32_t code;
+} virtio_snd_hdr;
+
+/* event notification */
+typedef struct virtio_snd_event {
+    /* VIRTIO_SND_EVT_* */
+    virtio_snd_hdr hdr;
+    /* Optional event data */
+    uint32_t data;
+} virtio_snd_event;
+
+/* common control request to query an item information */
+typedef struct virtio_snd_query_info {
+    /* VIRTIO_SND_R_*_INFO */
+    struct virtio_snd_hdr hdr;
+    /* item start identifier */
+    uint32_t start_id;
+    /* # of items to query */
+    uint32_t count;
+    /* size of a single item information in bytes */
+    uint32_t size;
+} virtio_snd_query_info;
+
+/* common item information header */
+typedef struct virtio_snd_info {
+    /* functional group node id (HDA Spec 7.1.2) */
+    uint32_t hda_fn_nid;
+} virtio_snd_info;
+
+#endif
-- 
2.25.1