From patchwork Mon Aug 7 07:43:12 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Oleksandr Andrushchenko X-Patchwork-Id: 9884851 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 44A98603FA for ; Mon, 7 Aug 2017 09:29:47 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 38A8928619 for ; Mon, 7 Aug 2017 09:29:47 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 29CBD2862A; Mon, 7 Aug 2017 09:29:47 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.3 required=2.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED,FREEMAIL_FROM,RCVD_IN_DNSWL_NONE,RCVD_IN_SORBS_SPAM, T_DKIM_INVALID autolearn=no version=3.3.1 Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1002B28616 for ; Mon, 7 Aug 2017 09:29:45 +0000 (UTC) Received: from alsa0.perex.cz (localhost [127.0.0.1]) by alsa0.perex.cz (Postfix) with ESMTP id 83FCB26707B; Mon, 7 Aug 2017 11:26:58 +0200 (CEST) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa0.perex.cz (Postfix, from userid 1000) id D2662267056; Mon, 7 Aug 2017 09:43:46 +0200 (CEST) Received: from mail-lf0-f66.google.com (mail-lf0-f66.google.com [209.85.215.66]) by alsa0.perex.cz (Postfix) with ESMTP id 21417267036 for ; Mon, 7 Aug 2017 09:43:42 +0200 (CEST) Received: by mail-lf0-f66.google.com with SMTP id t128so4875130lff.3 for ; Mon, 07 Aug 2017 00:43:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=LZ0g0vaT//LxhiMluvu9ir5HUSuqdLviy7IeyHu9opk=; b=IzuuHr7hzhKL7FUbbufZiDKpnaQULp0BcY1Kd4Td9avZzTsahjZjrUtTyjfkaOlAmU ARNrllwc1cZ4VFT9vOxJQJ/y4AA4xdy8i/fCH2aA82+CaUX6yZzjyCjwgkLn29Wghi6S HM3V3rCwSGpjikJnqx1dy2cZce0V0TpjYwQ5lw1Lx+OexBOvVaeV7kG2E6oMU8fXNe5D SgGYPyn9MYKCenGMzpyJIgFRVLYszw4/2avBQvhvOksJZZpBIgbVFXzwN8lU736gpDB7 J+W1H5eAefeOQQapOT5pvURJyde+cBLiYC+DEHzt+2DOiRMEscVfZS4fx5dgAYSkMA96 Ehcg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=LZ0g0vaT//LxhiMluvu9ir5HUSuqdLviy7IeyHu9opk=; b=MMG1Ub9c7C82kGwKa6lVwUzR8Isa9bmdA/ZPpSJhD0l+hY6g3Xf1aABM0/Rl4o0eOX DzxQwBXd85kr5TmwYusAGGQDlWC9Vjr/m+lyUjG5dOk2iecUpF6z4oLXDSLIFyPBxUZ3 7DN+ciQulfp4InQNpm8/YmNZbh8BoDjulhr0tVcVSHp0qwATo/reIun/TN74kQ+VhLYl ZBnWzsCsyr/G4WzELYiaLxcBjA+fLdME0iMTaIx4uReXKoi2OYqn+OTJwet0pXjBiuc/ 1WnVd2rrmaxrMuM2r85/+ngwjpo2vDk1qDBvWRoTkPj4ePmLNLYaYySdYcYnYiLT9IkN G+hA== X-Gm-Message-State: AHYfb5iC+5RqN78bNdMQjzqykU+fV71oetc0IJ5tBFeCkwH+yUEmHh7V XASI6wm8bGeGL6DA X-Received: by 10.46.13.18 with SMTP id 18mr3138505ljn.128.1502091822170; Mon, 07 Aug 2017 00:43:42 -0700 (PDT) Received: from a2k-HP-ProDesk-600-G2-SFF.kyiv.epam.com (ll-52.209.223.85.sovam.net.ua. [85.223.209.52]) by smtp.gmail.com with ESMTPSA id f136sm399062lff.34.2017.08.07.00.43.41 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 07 Aug 2017 00:43:41 -0700 (PDT) From: Oleksandr Andrushchenko To: alsa-devel@alsa-project.org, xen-devel@lists.xen.org, linux-kernel@vger.kernel.org Date: Mon, 7 Aug 2017 10:43:12 +0300 Message-Id: <1502091796-14413-8-git-send-email-andr2000@gmail.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1502091796-14413-1-git-send-email-andr2000@gmail.com> References: <1502091796-14413-1-git-send-email-andr2000@gmail.com> X-Mailman-Approved-At: Mon, 07 Aug 2017 11:26:50 +0200 Cc: andr2000@gmail.com, Oleksandr Andrushchenko , tiwai@suse.com Subject: [alsa-devel] [PATCH 07/11] ALSA: vsnd: Initialize virtul sound card X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org X-Virus-Scanned: ClamAV using ClamSMTP From: Oleksandr Andrushchenko Initialize virtual sound card with streams according to the Xen store configuration. Add stubs for stream PCM operations. Signed-off-by: Oleksandr Andrushchenko --- sound/drivers/xen-front.c | 232 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 232 insertions(+) diff --git a/sound/drivers/xen-front.c b/sound/drivers/xen-front.c index f3e3f64f0aa6..9f31e6832086 100644 --- a/sound/drivers/xen-front.c +++ b/sound/drivers/xen-front.c @@ -134,6 +134,129 @@ struct xdrv_info { struct sdev_card_plat_data cfg_plat_data; }; +static struct sdev_pcm_stream_info *sdrv_stream_get( + struct snd_pcm_substream *substream) +{ + struct sdev_pcm_instance_info *pcm_instance = + snd_pcm_substream_chip(substream); + struct sdev_pcm_stream_info *stream; + + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + stream = &pcm_instance->streams_pb[substream->number]; + else + stream = &pcm_instance->streams_cap[substream->number]; + return stream; +} + +static void sdrv_copy_pcm_hw(struct snd_pcm_hardware *dst, + struct snd_pcm_hardware *src, + struct snd_pcm_hardware *ref_pcm_hw) +{ + *dst = *ref_pcm_hw; + + if (src->formats) + dst->formats = src->formats; + if (src->buffer_bytes_max) + dst->buffer_bytes_max = + src->buffer_bytes_max; + if (src->period_bytes_min) + dst->period_bytes_min = + src->period_bytes_min; + if (src->period_bytes_max) + dst->period_bytes_max = + src->period_bytes_max; + if (src->periods_min) + dst->periods_min = src->periods_min; + if (src->periods_max) + dst->periods_max = src->periods_max; + if (src->rates) + dst->rates = src->rates; + if (src->rate_min) + dst->rate_min = src->rate_min; + if (src->rate_max) + dst->rate_max = src->rate_max; + if (src->channels_min) + dst->channels_min = src->channels_min; + if (src->channels_max) + dst->channels_max = src->channels_max; + if (src->buffer_bytes_max) { + dst->buffer_bytes_max = src->buffer_bytes_max; + dst->period_bytes_max = src->buffer_bytes_max / + src->periods_max; + dst->periods_max = dst->buffer_bytes_max / + dst->period_bytes_max; + } +} + +static int sdrv_alsa_open(struct snd_pcm_substream *substream) +{ + return 0; +} + +static int sdrv_alsa_close(struct snd_pcm_substream *substream) +{ + return 0; +} + +static int sdrv_alsa_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params) +{ + return 0; +} + +static int sdrv_alsa_hw_free(struct snd_pcm_substream *substream) +{ + return 0; +} + +static int sdrv_alsa_prepare(struct snd_pcm_substream *substream) +{ + return 0; +} + +static int sdrv_alsa_trigger(struct snd_pcm_substream *substream, int cmd) +{ + return 0; +} + +static inline snd_pcm_uframes_t sdrv_alsa_pointer( + struct snd_pcm_substream *substream) +{ + return 0; +} + +static int sdrv_alsa_playback_copy_user(struct snd_pcm_substream *substream, + int channel, unsigned long pos, void __user *buf, + unsigned long bytes) +{ + return 0; +} + +static int sdrv_alsa_playback_copy_kernel(struct snd_pcm_substream *substream, + int channel, unsigned long pos, void *buf, unsigned long bytes) +{ + return 0; +} + +static int sdrv_alsa_capture_copy_user(struct snd_pcm_substream *substream, + int channel, unsigned long pos, void __user *buf, + unsigned long bytes) +{ + return 0; +} + +static int sdrv_alsa_capture_copy_kernel(struct snd_pcm_substream *substream, + int channel, unsigned long pos, void *buf, unsigned long bytes) +{ + return 0; +} + +static int sdrv_alsa_playback_fill_silence(struct snd_pcm_substream *substream, + int channel, unsigned long pos, unsigned long bytes) +{ + return 0; +} + #define MAX_XEN_BUFFER_SIZE (64 * 1024) #define MAX_BUFFER_SIZE MAX_XEN_BUFFER_SIZE #define MIN_PERIOD_SIZE 64 @@ -168,10 +291,119 @@ static struct snd_pcm_hardware sdrv_pcm_hw_default = { .fifo_size = 0, }; +/* + * FIXME: The mmaped data transfer is asynchronous and there is no + * ack signal from user-space when it is done. This is the + * reason it is not implemented in the PV driver as we do need + * to know when the buffer can be transferred to the backend. + */ + +static struct snd_pcm_ops sdrv_alsa_playback_ops = { + .open = sdrv_alsa_open, + .close = sdrv_alsa_close, + .ioctl = snd_pcm_lib_ioctl, + .hw_params = sdrv_alsa_hw_params, + .hw_free = sdrv_alsa_hw_free, + .prepare = sdrv_alsa_prepare, + .trigger = sdrv_alsa_trigger, + .pointer = sdrv_alsa_pointer, + .copy_user = sdrv_alsa_playback_copy_user, + .copy_kernel = sdrv_alsa_playback_copy_kernel, + .fill_silence = sdrv_alsa_playback_fill_silence, +}; + +static struct snd_pcm_ops sdrv_alsa_capture_ops = { + .open = sdrv_alsa_open, + .close = sdrv_alsa_close, + .ioctl = snd_pcm_lib_ioctl, + .hw_params = sdrv_alsa_hw_params, + .hw_free = sdrv_alsa_hw_free, + .prepare = sdrv_alsa_prepare, + .trigger = sdrv_alsa_trigger, + .pointer = sdrv_alsa_pointer, + .copy_user = sdrv_alsa_capture_copy_user, + .copy_kernel = sdrv_alsa_capture_copy_kernel, +}; + static int sdrv_new_pcm(struct sdev_card_info *card_info, struct cfg_pcm_instance *instance_config, struct sdev_pcm_instance_info *pcm_instance_info) { + struct snd_pcm *pcm; + int ret, i; + + dev_dbg(&card_info->xdrv_info->xb_dev->dev, + "New PCM device \"%s\" with id %d playback %d capture %d", + instance_config->name, + instance_config->device_id, + instance_config->num_streams_pb, + instance_config->num_streams_cap); + + pcm_instance_info->card_info = card_info; + + sdrv_copy_pcm_hw(&pcm_instance_info->pcm_hw, + &instance_config->pcm_hw, &card_info->pcm_hw); + + if (instance_config->num_streams_pb) { + pcm_instance_info->streams_pb = devm_kcalloc( + &card_info->card->card_dev, + instance_config->num_streams_pb, + sizeof(struct sdev_pcm_stream_info), + GFP_KERNEL); + if (!pcm_instance_info->streams_pb) + return -ENOMEM; + } + + if (instance_config->num_streams_cap) { + pcm_instance_info->streams_cap = devm_kcalloc( + &card_info->card->card_dev, + instance_config->num_streams_cap, + sizeof(struct sdev_pcm_stream_info), + GFP_KERNEL); + if (!pcm_instance_info->streams_cap) + return -ENOMEM; + } + + pcm_instance_info->num_pcm_streams_pb = + instance_config->num_streams_pb; + pcm_instance_info->num_pcm_streams_cap = + instance_config->num_streams_cap; + + for (i = 0; i < pcm_instance_info->num_pcm_streams_pb; i++) { + pcm_instance_info->streams_pb[i].pcm_hw = + instance_config->streams_pb[i].pcm_hw; + pcm_instance_info->streams_pb[i].unique_id = + instance_config->streams_pb[i].unique_id; + } + + for (i = 0; i < pcm_instance_info->num_pcm_streams_cap; i++) { + pcm_instance_info->streams_cap[i].pcm_hw = + instance_config->streams_cap[i].pcm_hw; + pcm_instance_info->streams_cap[i].unique_id = + instance_config->streams_cap[i].unique_id; + } + + ret = snd_pcm_new(card_info->card, instance_config->name, + instance_config->device_id, + instance_config->num_streams_pb, + instance_config->num_streams_cap, + &pcm); + if (ret < 0) + return ret; + + pcm->private_data = pcm_instance_info; + pcm->info_flags = 0; + strncpy(pcm->name, "Virtual card PCM", sizeof(pcm->name)); + + if (instance_config->num_streams_pb) + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, + &sdrv_alsa_playback_ops); + + if (instance_config->num_streams_cap) + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, + &sdrv_alsa_capture_ops); + + pcm_instance_info->pcm = pcm; return 0; }