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[37.6.0.56]) by smtp.gmail.com with ESMTPSA id g8-20020a7bc4c8000000b003fe505319ffsm19774707wmk.18.2023.08.15.02.08.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 15 Aug 2023 02:08:35 -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?= Subject: [PATCH v6 08/12] virtio-sound: handle VIRTIO_SND_R_PCM_PREPARE Date: Tue, 15 Aug 2023 12:07:13 +0300 Message-Id: <894b52532b7277b25409d73ae8dbe994c08d2940.1692089917.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::330; envelope-from=manos.pitsidianakis@linaro.org; helo=mail-wm1-x330.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. Signed-off-by: Emmanouil Pitsidianakis --- hw/virtio/virtio-snd.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/hw/virtio/virtio-snd.c b/hw/virtio/virtio-snd.c index c9909a29af..f314b6270f 100644 --- a/hw/virtio/virtio-snd.c +++ b/hw/virtio/virtio-snd.c @@ -441,6 +441,27 @@ static uint32_t virtio_snd_pcm_prepare_impl(VirtIOSound *s, uint32_t stream_id) return VIRTIO_SND_S_OK; } +/* + * 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 sz = iov_to_buf(cmd->elem->out_sg, + cmd->elem->out_num, + sizeof(virtio_snd_hdr), + &stream_id, + sizeof(stream_id)); + + cmd->resp.code = sz == sizeof(uint32_t) + ? virtio_snd_pcm_prepare_impl(s, stream_id) + : VIRTIO_SND_S_BAD_MSG; +} + /* * Handles VIRTIO_SND_R_PCM_START. * @@ -519,6 +540,8 @@ 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 = VIRTIO_SND_S_NOT_SUPP; break;