From: Emmanouil Pitsidianakis <manos.pitsidiana...@linaro.org> Handle the set parameters control request. It reconfigures a stream based on a guest's preference if the values are valid and supported.
Based-on: https://github.com/OpenSynergy/qemu/commit/5a2f350eec5d157b90d9c7b40a8e603f4da92471 Signed-off-by: Igor Skalkin <igor.skal...@opensynergy.com> Signed-off-by: Anton Yakovlev <anton.yakov...@opensynergy.com> Signed-off-by: Emmanouil Pitsidianakis <manos.pitsidiana...@linaro.org> Reviewed-by: Alex Bennée <alex.ben...@linaro.org> --- hw/virtio/trace-events | 1 + hw/virtio/virtio-snd.c | 34 ++++++++++++++++++++++++++++++++++ 2 files changed, 35 insertions(+) diff --git a/hw/virtio/trace-events b/hw/virtio/trace-events index 7044b110b7..7907b610c1 100644 --- a/hw/virtio/trace-events +++ b/hw/virtio/trace-events @@ -163,6 +163,7 @@ virtio_snd_vm_state_running(void) "vm state running" virtio_snd_vm_state_stopped(void) "vm state stopped" virtio_snd_realize(void *snd) "snd %p: realize" virtio_snd_unrealize(void *snd) "snd %p: unrealize" +virtio_snd_handle_pcm_set_params(uint32_t stream) "VIRTIO_SND_PCM_SET_PARAMS called for stream %"PRIu32 virtio_snd_handle_ctrl(void *vdev, void *vq) "snd %p: handle ctrl event for queue %p" virtio_snd_handle_pcm_info(uint32_t stream) "VIRTIO_SND_R_PCM_INFO called for stream %"PRIu32 virtio_snd_handle_pcm_start_stop(const char *code, uint32_t stream) "%s called for stream %"PRIu32 diff --git a/hw/virtio/virtio-snd.c b/hw/virtio/virtio-snd.c index 50b5a9d5df..6a7545536b 100644 --- a/hw/virtio/virtio-snd.c +++ b/hw/virtio/virtio-snd.c @@ -250,43 +250,75 @@ static uint32_t virtio_snd_set_pcm_params(VirtIOSound *s, uint32_t stream_id, virtio_snd_pcm_set_params *params) { virtio_snd_pcm_set_params *st_params; if (stream_id >= s->snd_conf.streams || s->pcm->pcm_params == NULL) { /* * TODO: do we need to set DEVICE_NEEDS_RESET? */ virtio_error(VIRTIO_DEVICE(s), "Streams have not been initialized.\n"); return cpu_to_le32(VIRTIO_SND_S_BAD_MSG); } st_params = virtio_snd_pcm_get_params(s, stream_id); if (params->channels < 1 || params->channels > AUDIO_MAX_CHANNELS) { error_report("Number of channels is not supported."); return cpu_to_le32(VIRTIO_SND_S_NOT_SUPP); } if (!(supported_formats & BIT(params->format))) { error_report("Stream format is not supported."); return cpu_to_le32(VIRTIO_SND_S_NOT_SUPP); } if (!(supported_rates & BIT(params->rate))) { error_report("Stream rate is not supported."); return cpu_to_le32(VIRTIO_SND_S_NOT_SUPP); } st_params->buffer_bytes = le32_to_cpu(params->buffer_bytes); st_params->period_bytes = le32_to_cpu(params->period_bytes); st_params->features = le32_to_cpu(params->features); /* the following are uint8_t, so there's no need to bswap the values. */ st_params->channels = params->channels; st_params->format = params->format; st_params->rate = params->rate; return cpu_to_le32(VIRTIO_SND_S_OK); } +/* + * Handles the VIRTIO_SND_R_PCM_SET_PARAMS request. + * + * @s: VirtIOSound device + * @cmd: The request command queue element from VirtIOSound cmdq field + */ +static void virtio_snd_handle_pcm_set_params(VirtIOSound *s, + virtio_snd_ctrl_command *cmd) +{ + virtio_snd_pcm_set_params req = { 0 }; + uint32_t stream_id; + size_t msg_sz = iov_to_buf(cmd->elem->out_sg, + cmd->elem->out_num, + 0, + &req, + sizeof(virtio_snd_pcm_set_params)); + + if (msg_sz != sizeof(virtio_snd_pcm_set_params)) { + /* + * TODO: do we need to set DEVICE_NEEDS_RESET? + */ + qemu_log_mask(LOG_GUEST_ERROR, + "%s: virtio-snd command size incorrect %zu vs \ + %zu\n", __func__, msg_sz, sizeof(virtio_snd_pcm_set_params)); + cmd->resp.code = cpu_to_le32(VIRTIO_SND_S_BAD_MSG); + return; + } + stream_id = le32_to_cpu(req.hdr.stream_id); + trace_virtio_snd_handle_pcm_set_params(stream_id); + cmd->resp.code = virtio_snd_set_pcm_params(s, stream_id, &req); +} + /* * Get a QEMU Audiosystem compatible format value from a VIRTIO_SND_PCM_FMT_* */ @@ -497,70 +529,72 @@ static inline void process_cmd(VirtIOSound *s, virtio_snd_ctrl_command *cmd) { uint32_t code; size_t msg_sz = iov_to_buf(cmd->elem->out_sg, cmd->elem->out_num, 0, &cmd->ctrl, sizeof(virtio_snd_hdr)); if (msg_sz != sizeof(virtio_snd_hdr)) { /* * TODO: do we need to set DEVICE_NEEDS_RESET? */ qemu_log_mask(LOG_GUEST_ERROR, "%s: virtio-snd command size incorrect %zu vs \ %zu\n", __func__, msg_sz, sizeof(virtio_snd_hdr)); return; } code = le32_to_cpu(cmd->ctrl.code); trace_virtio_snd_handle_code(code, print_code(code)); switch (code) { case VIRTIO_SND_R_JACK_INFO: case VIRTIO_SND_R_JACK_REMAP: qemu_log_mask(LOG_UNIMP, "virtio_snd: jack functionality is unimplemented.\n"); cmd->resp.code = cpu_to_le32(VIRTIO_SND_S_NOT_SUPP); break; case VIRTIO_SND_R_PCM_INFO: virtio_snd_handle_pcm_info(s, cmd); break; case VIRTIO_SND_R_PCM_START: virtio_snd_handle_pcm_start_stop(s, cmd, true); break; case VIRTIO_SND_R_PCM_STOP: virtio_snd_handle_pcm_start_stop(s, cmd, false); break; case VIRTIO_SND_R_PCM_SET_PARAMS: + virtio_snd_handle_pcm_set_params(s, cmd); + break; case VIRTIO_SND_R_PCM_PREPARE: case VIRTIO_SND_R_PCM_RELEASE: cmd->resp.code = cpu_to_le32(VIRTIO_SND_S_NOT_SUPP); break; case VIRTIO_SND_R_CHMAP_INFO: qemu_log_mask(LOG_UNIMP, "virtio_snd: chmap info functionality is unimplemented.\n"); trace_virtio_snd_handle_chmap_info(); cmd->resp.code = cpu_to_le32(VIRTIO_SND_S_NOT_SUPP); break; default: /* error */ error_report("virtio snd header not recognized: %"PRIu32, code); cmd->resp.code = cpu_to_le32(VIRTIO_SND_S_BAD_MSG); } iov_from_buf(cmd->elem->in_sg, cmd->elem->in_num, 0, &cmd->resp, sizeof(virtio_snd_hdr)); virtqueue_push(cmd->vq, cmd->elem, sizeof(virtio_snd_hdr)); virtio_notify(VIRTIO_DEVICE(s), cmd->vq); } /* * Consume all elements in command queue. * * @s: VirtIOSound device */ -- 2.39.2
