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| author | Manos Pitsidianakis <manos.pitsidianakis@linaro.org> | 2023-10-23 15:03:24 +0300 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2023-11-07 03:39:10 -0500 |
| commit | e5788b8fbf9361c978eb8347471d8f855580777f (patch) | |
| tree | 10e4dd552148e8291738b04ca42e99b46a584fe3 /hw | |
| parent | 64704ce04b0a62184d49f899e7f300f67480a2a6 (diff) | |
| download | qemu-e5788b8fbf9361c978eb8347471d8f855580777f.zip qemu-e5788b8fbf9361c978eb8347471d8f855580777f.tar.gz qemu-e5788b8fbf9361c978eb8347471d8f855580777f.tar.bz2 | |
virtio-sound: handle VIRTIO_SND_R_PCM_PREPARE
Handles the PCM prepare control request. It initializes a PCM stream
when the guests asks for it.
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: <c6a9c437ef48e45f083fc957dcf7fe18a028e657.1698062525.git.manos.pitsidianakis@linaro.org>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/audio/virtio-snd.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/hw/audio/virtio-snd.c b/hw/audio/virtio-snd.c index 084890e..31a1942 100644 --- a/hw/audio/virtio-snd.c +++ b/hw/audio/virtio-snd.c @@ -479,6 +479,28 @@ static const char *print_code(uint32_t code) }; /* + * Handles VIRTIO_SND_R_PCM_PREPARE. + * + * @s: VirtIOSound device + * @cmd: The request command queue element from VirtIOSound cmdq field + */ +static void virtio_snd_handle_pcm_prepare(VirtIOSound *s, + virtio_snd_ctrl_command *cmd) +{ + uint32_t stream_id; + size_t msg_sz = iov_to_buf(cmd->elem->out_sg, + cmd->elem->out_num, + sizeof(virtio_snd_hdr), + &stream_id, + sizeof(stream_id)); + + stream_id = le32_to_cpu(stream_id); + cmd->resp.code = msg_sz == sizeof(stream_id) + ? virtio_snd_pcm_prepare(s, stream_id) + : cpu_to_le32(VIRTIO_SND_S_BAD_MSG); +} + +/* * Handles VIRTIO_SND_R_PCM_START. * * @s: VirtIOSound device @@ -569,6 +591,8 @@ process_cmd(VirtIOSound *s, virtio_snd_ctrl_command *cmd) virtio_snd_handle_pcm_set_params(s, cmd); break; case VIRTIO_SND_R_PCM_PREPARE: + virtio_snd_handle_pcm_prepare(s, cmd); + break; case VIRTIO_SND_R_PCM_RELEASE: cmd->resp.code = cpu_to_le32(VIRTIO_SND_S_NOT_SUPP); break; |