From patchwork Tue Mar 23 12:27:30 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnaud Pouliquen X-Patchwork-Id: 12157655 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=-13.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,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 38F7FC433C1 for ; Tue, 23 Mar 2021 12:29:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E69D6619A5 for ; Tue, 23 Mar 2021 12:29:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230331AbhCWM2r (ORCPT ); Tue, 23 Mar 2021 08:28:47 -0400 Received: from mx08-00178001.pphosted.com ([91.207.212.93]:57230 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S230264AbhCWM2Y (ORCPT ); Tue, 23 Mar 2021 08:28:24 -0400 Received: from pps.filterd (m0046661.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.16.0.43/8.16.0.43) with SMTP id 12NCMA7O026737; Tue, 23 Mar 2021 13:28:19 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h=from : to : cc : subject : date : message-id : mime-version : content-type; s=selector1; bh=TFEaoGHubAcvTK6aBZnSgF+yw3/Ea8wZf8ITTSJeSZw=; b=YUhffOcZCMjghv1KUTC0P0PKD/SzaRtAlwZveZzaX8JomXbCm5I+zi8O+khx59dDNAxA m1TM6JsVrcYi4njCuyPIY7gtYY7REoeQKe26ZB6LgJeTTINNYytpk3PSWVDk3TVl1jf6 3530kzFNA7CdNAJRKWuuQ8HXnxUaP7/bmTJFEBEe8Z8RoEdibDk3PNxEcc7oQVmO1NJ1 rWyS4xB1wEX06mRNUk0dUeeBS8TUBVuZ7Jsx5bdKxaHxx5UsOzlmQvJHv+ydRANIv0is HLOCU1t4y6K7cnPU6wWG1jf6WbAHdU4KzHgzuN1WkDAqIwf9aNarZQbtcg6gsUWTB6AT LA== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com with ESMTP id 37d8tpfapv-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 23 Mar 2021 13:28:18 +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 62E0B100034; Tue, 23 Mar 2021 13:28:17 +0100 (CET) Received: from Webmail-eu.st.com (sfhdag2node3.st.com [10.75.127.6]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id C608824CF45; Tue, 23 Mar 2021 13:28:17 +0100 (CET) Received: from localhost (10.75.127.46) by SFHDAG2NODE3.st.com (10.75.127.6) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 23 Mar 2021 13:28:16 +0100 From: Arnaud Pouliquen To: Bjorn Andersson , Ohad Ben-Cohen , Mathieu Poirier , Andy Gross CC: , , , , Subject: [PATCH 0/7] Restructure the rpmsg char and introduce the rpmsg-raw channel Date: Tue, 23 Mar 2021 13:27:30 +0100 Message-ID: <20210323122737.23035-1-arnaud.pouliquen@foss.st.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 X-Originating-IP: [10.75.127.46] X-ClientProxiedBy: SFHDAG3NODE1.st.com (10.75.127.7) To SFHDAG2NODE3.st.com (10.75.127.6) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.369,18.0.761 definitions=2021-03-23_06:2021-03-22,2021-03-23 signatures=0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org This series is the second step in the division of the series [1]: "Introducing a Generic IOCTL Interface for RPMsg Channel Management". The purpose of this patchset is to: - split the control code related to the control and the endpoint. - define the rpmsg-raw channel, associated with the rpmsg char device to allow it to be instantiated using a name service announcement. An important point to keep in mind for this patchset is that the concept of channel is associated with a default endpoint. To facilitate communication with the remote side, this default endpoint must have a fixed address. Consequently, for this series, I made a design choice to fix the endpoint on the "rpmsg-raw" channel probe, and not allow to create/destroy an endpoint on FS open/close. This is only applicable for channels probed by the rpmsg bus. The behavior, using the RPMSG_CREATE_EPT_IOCTL and RPMSG_DESTROY_EPT_IOCTL controls, is preserved. The next steps should be to correct this: Introduce the IOCTLs RPMSG_CREATE_DEV_IOCTL and RPMSG_DESTROY_DEV_IOCTL to instantiate the rpmsg devices [1]: https://patchwork.kernel.org/project/linux-remoteproc/list/?series=435523 Arnaud Pouliquen (7): rpmsg: char: Export eptdev create an destroy functions rpmsg: Move the rpmsg control device from rpmsg_char to rpmsg_ctrl rpmsg: Update rpmsg_chrdev_register_device function rpmsg: char: Introduce __rpmsg_chrdev_create_eptdev function rpmsg: char: Introduce a rpmsg driver for the rpmsg char device rpmsg: char: No dynamic endpoint management for the default one rpmsg: char: Return error if user try to destroy a default endpoint. drivers/rpmsg/Kconfig | 9 ++ drivers/rpmsg/Makefile | 1 + drivers/rpmsg/qcom_glink_native.c | 2 +- drivers/rpmsg/qcom_smd.c | 2 +- drivers/rpmsg/rpmsg_char.c | 221 +++++++++------------------- drivers/rpmsg/rpmsg_char.h | 50 +++++++ drivers/rpmsg/rpmsg_ctrl.c | 233 ++++++++++++++++++++++++++++++ drivers/rpmsg/rpmsg_internal.h | 8 +- drivers/rpmsg/virtio_rpmsg_bus.c | 2 +- 9 files changed, 368 insertions(+), 160 deletions(-) create mode 100644 drivers/rpmsg/rpmsg_char.h create mode 100644 drivers/rpmsg/rpmsg_ctrl.c