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[109.242.226.170]) by smtp.gmail.com with ESMTPSA id l16-20020a5d5270000000b0031c6ae19e27sm14701671wrc.99.2023.09.13.00.34.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 13 Sep 2023 00:34:33 -0700 (PDT) From: Emmanouil Pitsidianakis To: qemu-devel@nongnu.org Cc: Emmanouil Pitsidianakis , "Igor Skalkin" , "Anton Yakovlev" , "Paolo Bonzini" , "Gerd Hoffmann" , "Michael S. Tsirkin" , "Marcel Apfelbaum" , =?utf-8?q?Daniel_P=2E_Berr?= =?utf-8?q?ang=C3=A9?= , "Eduardo Habkost" , =?utf-8?q?Marc-Andr=C3=A9_Lureau?= , =?utf-8?q?Volker_R=C3=BCmelin?= , =?utf-8?b?S8WRdsOh?= =?utf-8?b?Z8OzLCBab2x0w6Fu?= , =?utf-8?q?Alex_Benn?= =?utf-8?q?=C3=A9e?= , =?utf-8?q?Philippe_Mathieu-Da?= =?utf-8?q?ud=C3=A9?= , "Mark Cave-Ayland" Subject: [PATCH v9 08/12] virtio-sound: handle VIRTIO_SND_R_PCM_PREPARE Date: Wed, 13 Sep 2023 10:33:15 +0300 Message-Id: <6029975cf95c71573a461025f8cd6730cc93c010.1694588927.git.manos.pitsidianakis@linaro.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: References: MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::336; envelope-from=manos.pitsidianakis@linaro.org; helo=mail-wm1-x336.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org 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 Signed-off-by: Anton Yakovlev Signed-off-by: Emmanouil Pitsidianakis --- hw/virtio/virtio-snd.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/hw/virtio/virtio-snd.c b/hw/virtio/virtio-snd.c index 29a70cd7e8..343afc0531 100644 --- a/hw/virtio/virtio-snd.c +++ b/hw/virtio/virtio-snd.c @@ -452,6 +452,28 @@ static const char *print_code(uint32_t code) #undef CASE }; +/* + * 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(uint32_t) + ? virtio_snd_pcm_prepare(s, stream_id) + : cpu_to_le32(VIRTIO_SND_S_BAD_MSG); +} + /* * Handles VIRTIO_SND_R_PCM_START. * @@ -535,6 +557,8 @@ 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;