From patchwork Wed Jul 13 11:36:08 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnaud POULIQUEN X-Patchwork-Id: 12916615 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A91F3C433EF for ; Wed, 13 Jul 2022 11:37:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236297AbiGMLhD (ORCPT ); Wed, 13 Jul 2022 07:37:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58750 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236210AbiGMLgy (ORCPT ); Wed, 13 Jul 2022 07:36:54 -0400 Received: from mx07-00178001.pphosted.com (mx08-00178001.pphosted.com [91.207.212.93]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 851381034D5; Wed, 13 Jul 2022 04:36:45 -0700 (PDT) Received: from pps.filterd (m0046660.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 26D8r3Gq023581; Wed, 13 Jul 2022 13:36:31 +0200 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-transfer-encoding : content-type; s=selector1; bh=u78HHDZ8gsijyl+0izTnhI2s/F/qPUzdVKZRzNXsq0Y=; b=bmLIdYrZClWz2YZX6qj0uN7Y2wBjGnGaYWoQew+9i2kHNfRX3/GzhEdOZBfdm59eyKY9 t5VMXp7DbAmOliXHUZW/ed3gZ/vGhXFZAROjvyRLUsh+dUNh8++Ew+E229jW8O/sneK1 xgki4krJODbXtpJpkelFwfeUb6gBdoAftkktOfjGobHBOoDRru9b+9D3EActHFBg+reg V9KJ5m+xDQhx0npM6NM6GrZy3NA9HK8cLTLK3oW53Zh2cgLqfUt4Y1bFSJoEr3RCcczr zkqhpuerKLf0VIn5IX1e6yZJxd64RtkvpLZi1n8yF+JIDwmUAuyH9Zpa8zloyaM2PnMX gw== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com (PPS) with ESMTPS id 3h94gugp7k-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 13 Jul 2022 13:36:30 +0200 Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id B1059100038; Wed, 13 Jul 2022 13:36:29 +0200 (CEST) Received: from Webmail-eu.st.com (shfdag1node2.st.com [10.75.129.70]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id AA18721D388; Wed, 13 Jul 2022 13:36:29 +0200 (CEST) Received: from localhost (10.75.127.49) by SHFDAG1NODE2.st.com (10.75.129.70) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.1.2308.20; Wed, 13 Jul 2022 13:36:27 +0200 From: Arnaud Pouliquen To: Bjorn Andersson , Mathieu Poirier CC: , , , Rob Herring , Christoph Hellwig , Stefano Stabellini , Bruce Ashfield , Subject: [PATCH v7 0/4] remoteproc: restructure the remoteproc VirtIO device Date: Wed, 13 Jul 2022 13:36:08 +0200 Message-ID: <20220713113612.2117279-1-arnaud.pouliquen@foss.st.com> X-Mailer: git-send-email 2.24.3 MIME-Version: 1.0 X-Originating-IP: [10.75.127.49] X-ClientProxiedBy: SFHDAG2NODE3.st.com (10.75.127.6) To SHFDAG1NODE2.st.com (10.75.129.70) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.883,Hydra:6.0.517,FMLib:17.11.122.1 definitions=2022-07-12_14,2022-07-13_02,2022-06-22_01 Precedence: bulk List-ID: X-Mailing-List: linux-remoteproc@vger.kernel.org 1) Update from V6 [1]: Updates based on Mathieu's comments. Updates are listed in the commit message of each patch. [1] https://lkml.org/lkml/2022/6/3/558 2) Patchset description: This series is a part of the work initiated a long time ago in the series "remoteproc: Decorelate virtio from core"[2] Objective of the work: - Update the remoteproc VirtIO device creation (use platform device) - Allow to declare remoteproc VirtIO device in DT - declare resources associated to a remote proc VirtIO - declare a list of VirtIO supported by the platform. - Prepare the enhancement to more VirtIO devices (e.g I2C, audio, video, ...). For instance be able to declare a I2C device in a virtio-i2C node. - Keep the legacy working! - Try to improve the picture about concerns reported by Christoph Hellwing [3][4] [2] https://lkml.org/lkml/2020/4/16/1817 [3] https://lkml.org/lkml/2021/6/23/607 [4] https://patchwork.kernel.org/project/linux-remoteproc/patch/AOKowLclCbOCKxyiJ71WeNyuAAj2q8EUtxrXbyky5E@cp7-web-042.plabs.ch/ In term of device tree this would result in such hierarchy (stm32mp1 example with 2 virtio RPMSG): m4_rproc: m4@10000000 { compatible = "st,stm32mp1-m4"; reg = <0x10000000 0x40000>, <0x30000000 0x40000>, <0x38000000 0x10000>; memory-region = <&retram>, <&mcuram>,<&mcuram2>; mboxes = <&ipcc 2>, <&ipcc 3>; mbox-names = "shutdown", "detach"; status = "okay"; #address-cells = <1>; #size-cells = <0>; vdev@0 { compatible = "rproc-virtio"; reg = <0>; virtio,id = <7>; /* RPMSG */ memory-region = <&vdev0vring0>, <&vdev0vring1>, <&vdev0buffer>; mboxes = <&ipcc 0>, <&ipcc 1>; mbox-names = "vq0", "vq1"; status = "okay"; }; vdev@1 { compatible = "rproc-virtio"; reg = <1>; virtio,id = <7>; /*RPMSG */ memory-region = <&vdev1vring0>, <&vdev1vring1>, <&vdev1buffer>; mboxes = <&ipcc 4>, <&ipcc 5>; mbox-names = "vq0", "vq1"; status = "okay"; }; }; I have divided the work in 4 steps to simplify the review, This series implements only the step 1: step 1: Redefine the remoteproc VirtIO device as a platform device - migrate rvdev management in remoteproc virtio.c, - create a remotproc virtio config ( can be disabled for platform that not use VirtIO IPC. step 2: Add possibility to declare and probe a VirtIO sub node - VirtIO bindings declaration, - multi DT VirtIO devices support, - introduction of a remote proc virtio bind device mechanism , => https://github.com/arnopo/linux/commits/step2-virtio-in-DT step 3: Add memory declaration in VirtIO subnode => https://github.com/arnopo/linux/commits/step3-virtio-memories step 4: Add mailbox declaration in VirtIO subnode => https://github.com/arnopo/linux/commits/step4-virtio-mailboxes Arnaud Pouliquen (4): remoteproc: core: Introduce rproc_rvdev_add_device function remoteproc: core: Introduce rproc_add_rvdev function remoteproc: Move rproc_vdev management to remoteproc_virtio.c remoteproc: virtio: Create platform device for the remoteproc_virtio drivers/remoteproc/remoteproc_core.c | 153 +++--------------- drivers/remoteproc/remoteproc_internal.h | 23 ++- drivers/remoteproc/remoteproc_virtio.c | 188 ++++++++++++++++++++--- include/linux/remoteproc.h | 6 +- 4 files changed, 209 insertions(+), 161 deletions(-)