From patchwork Tue Dec 22 10:57:24 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnaud Pouliquen X-Patchwork-Id: 346670 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C2917C432C3 for ; Tue, 22 Dec 2020 10:59:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9F70E2313C for ; Tue, 22 Dec 2020 10:59:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725847AbgLVK64 (ORCPT ); Tue, 22 Dec 2020 05:58:56 -0500 Received: from mx08-00178001.pphosted.com ([91.207.212.93]:10238 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726666AbgLVK64 (ORCPT ); Tue, 22 Dec 2020 05:58:56 -0500 Received: from pps.filterd (m0046660.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.16.0.43/8.16.0.43) with SMTP id 0BMAw87T012890; Tue, 22 Dec 2020 11:58:10 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=selector1; bh=9YJwuMmhvQjiQZdfwPozN0/SAPH4XLa1zY4sMK1+Xeg=; b=LeAUFUX7Ip/yc7kvLlcHnK+5FhabePxZma6STCdwPaRczv/OYzqvNyKBXq1FAZEV//xT kGnmaZ20KVgX1YxFkgtRqc4p64lipOqivFYKl8pg4DgiKOqDjQuYMyOheRqe3XcYJo6t iIXgsIqhOzVVcSyPlACyFo5lywcEGVjkCzG+czalBomy3+pbEGCbq5hS+U8G8pZARuTX dPoyhidDxg/vC8ADIKmZlF4nif61MA/hHvP10wYcJNCWhnLiwCOfF9PJaor65VmdZAlh aNA0D6G3C5vRy7iS669Ir8LjGBT05c3oojSEe37uLBsjTZI62usn1h05y5lRKvQ2PZqc IQ== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com with ESMTP id 35k0eb3xc6-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 22 Dec 2020 11:58:10 +0100 Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id C270810002A; Tue, 22 Dec 2020 11:58:09 +0100 (CET) Received: from Webmail-eu.st.com (sfhdag2node3.st.com [10.75.127.6]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id B51FB22ECB4; Tue, 22 Dec 2020 11:58:09 +0100 (CET) Received: from localhost (10.75.127.50) by SFHDAG2NODE3.st.com (10.75.127.6) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Tue, 22 Dec 2020 11:58:09 +0100 From: Arnaud Pouliquen To: Bjorn Andersson , Ohad Ben-Cohen , Mathieu Poirier , Andy Gross CC: , , , , Subject: [PATCH v2 14/16] rpmsg: glink: add create and release rpmsg channel ops Date: Tue, 22 Dec 2020 11:57:24 +0100 Message-ID: <20201222105726.16906-15-arnaud.pouliquen@foss.st.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20201222105726.16906-1-arnaud.pouliquen@foss.st.com> References: <20201222105726.16906-1-arnaud.pouliquen@foss.st.com> MIME-Version: 1.0 X-Originating-IP: [10.75.127.50] X-ClientProxiedBy: SFHDAG1NODE2.st.com (10.75.127.2) To SFHDAG2NODE3.st.com (10.75.127.6) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.343, 18.0.737 definitions=2020-12-22_04:2020-12-21,2020-12-22 signatures=0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Add the new ops introduced by the rpmsg_ns series and used by the rpmsg_ctrl driver to instantiate a new rpmsg channel. Signed-off-by: Arnaud Pouliquen --- drivers/rpmsg/qcom_glink_native.c | 94 ++++++++++++++++++++++++------- 1 file changed, 75 insertions(+), 19 deletions(-) diff --git a/drivers/rpmsg/qcom_glink_native.c b/drivers/rpmsg/qcom_glink_native.c index 27a05167c18c..d74c338de077 100644 --- a/drivers/rpmsg/qcom_glink_native.c +++ b/drivers/rpmsg/qcom_glink_native.c @@ -205,6 +205,9 @@ static const struct rpmsg_endpoint_ops glink_endpoint_ops; #define GLINK_FEATURE_INTENTLESS BIT(1) static void qcom_glink_rx_done_work(struct work_struct *work); +static struct rpmsg_device * +qcom_glink_create_rpdev(struct qcom_glink *glink, + struct rpmsg_channel_info *chinfo); static struct glink_channel *qcom_glink_alloc_channel(struct qcom_glink *glink, const char *name) @@ -1203,6 +1206,37 @@ static int qcom_glink_announce_create(struct rpmsg_device *rpdev) return 0; } +static struct rpmsg_device * +qcom_glink_create_channel(struct rpmsg_device *rp_parent, + struct rpmsg_channel_info *chinfo) +{ + struct glink_channel *channel = to_glink_channel(rp_parent->ept); + struct qcom_glink *glink = channel->glink; + struct rpmsg_device *rpdev; + const char *name = chinfo->name; + + channel = qcom_glink_alloc_channel(glink, name); + if (IS_ERR(channel)) + return ERR_PTR(PTR_ERR(channel)); + + rpdev = qcom_glink_create_rpdev(glink, chinfo); + if (!IS_ERR(rpdev)) { + rpdev->ept = &channel->ept; + channel->rpdev = rpdev; + } + + return rpdev; +} + +static int qcom_glink_release_channel(struct rpmsg_device *rpdev, + struct rpmsg_channel_info *chinfo) +{ + struct glink_channel *channel = to_glink_channel(rpdev->ept); + struct qcom_glink *glink = channel->glink; + + return rpmsg_unregister_device(glink->dev, chinfo); +} + static void qcom_glink_destroy_ept(struct rpmsg_endpoint *ept) { struct glink_channel *channel = to_glink_channel(ept); @@ -1359,6 +1393,8 @@ static struct device_node *qcom_glink_match_channel(struct device_node *node, static const struct rpmsg_device_ops glink_device_ops = { .create_ept = qcom_glink_create_ept, .announce_create = qcom_glink_announce_create, + .create_channel = qcom_glink_create_channel, + .release_channel = qcom_glink_release_channel, }; static const struct rpmsg_endpoint_ops glink_endpoint_ops = { @@ -1376,13 +1412,45 @@ static void qcom_glink_rpdev_release(struct device *dev) kfree(rpdev); } +static struct rpmsg_device * +qcom_glink_create_rpdev(struct qcom_glink *glink, + struct rpmsg_channel_info *chinfo) +{ + struct rpmsg_device *rpdev; + struct device_node *node; + int ret; + + rpdev = kzalloc(sizeof(*rpdev), GFP_KERNEL); + if (!rpdev) + return ERR_PTR(-ENOMEM); + + strncpy(rpdev->id.name, chinfo->name, RPMSG_NAME_SIZE); + rpdev->src = chinfo->src; + rpdev->dst = chinfo->dst; + rpdev->ops = &glink_device_ops; + + node = qcom_glink_match_channel(glink->dev->of_node, chinfo->name); + rpdev->dev.of_node = node; + rpdev->dev.parent = glink->dev; + rpdev->dev.release = qcom_glink_rpdev_release; + rpdev->driver_override = (char *)chinfo->driver_override; + + ret = rpmsg_register_device(rpdev); + if (ret) { + kfree(rpdev); + return ERR_PTR(ret); + } + + return rpdev; +} + static int qcom_glink_rx_open(struct qcom_glink *glink, unsigned int rcid, char *name) { struct glink_channel *channel; struct rpmsg_device *rpdev; bool create_device = false; - struct device_node *node; + struct rpmsg_channel_info chinfo; int lcid; int ret; unsigned long flags; @@ -1416,27 +1484,15 @@ static int qcom_glink_rx_open(struct qcom_glink *glink, unsigned int rcid, complete_all(&channel->open_req); if (create_device) { - rpdev = kzalloc(sizeof(*rpdev), GFP_KERNEL); - if (!rpdev) { - ret = -ENOMEM; + strncpy(chinfo.name, channel->name, sizeof(chinfo.name)); + chinfo.src = RPMSG_ADDR_ANY; + chinfo.dst = RPMSG_ADDR_ANY; + rpdev = qcom_glink_create_rpdev(glink, &chinfo); + if (IS_ERR(rpdev)) { + ret = PTR_ERR(rpdev); goto rcid_remove; } - rpdev->ept = &channel->ept; - strncpy(rpdev->id.name, name, RPMSG_NAME_SIZE); - rpdev->src = RPMSG_ADDR_ANY; - rpdev->dst = RPMSG_ADDR_ANY; - rpdev->ops = &glink_device_ops; - - node = qcom_glink_match_channel(glink->dev->of_node, name); - rpdev->dev.of_node = node; - rpdev->dev.parent = glink->dev; - rpdev->dev.release = qcom_glink_rpdev_release; - - ret = rpmsg_register_device(rpdev); - if (ret) - goto rcid_remove; - channel->rpdev = rpdev; }