From patchwork Wed May 25 07:40:12 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Roese X-Patchwork-Id: 1635296 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=denx.de header.i=@denx.de header.a=rsa-sha256 header.s=phobos-20191101 header.b=ueEV3tVr; dkim-atps=neutral Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de (client-ip=2a01:238:438b:c500:173d:9f52:ddab:ee01; helo=phobos.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=) Received: from phobos.denx.de (phobos.denx.de [IPv6:2a01:238:438b:c500:173d:9f52:ddab:ee01]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by bilbo.ozlabs.org (Postfix) with ESMTPS id 4L7NJx6kQHz9sBB for ; Wed, 25 May 2022 17:40:33 +1000 (AEST) Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id ED8A3842C3; Wed, 25 May 2022 09:40:30 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=none (p=none dis=none) header.from=denx.de Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=denx.de; s=phobos-20191101; t=1653464431; bh=wFyLIOawKQbHwyboKJYlEotQKdlFJ4yg47kSCxbkQXk=; h=From:To:Cc:Subject:Date:List-Id:List-Unsubscribe:List-Archive: List-Post:List-Help:List-Subscribe:From; b=ueEV3tVrCNVK419NoHLJlQv7mDHU+w260TGVNK+F96V22XcL+bbEAFCwnVJfiyf6d 9ZdcdQZWse1JQz6i14HRVVNP9QVbOv0v8PTCtpzAGXLdCowcb7PxObnjv7V58F3yOa gGFIVHsSijVLbUbNd85bAInwDGyuVdQvH/q6PVGTRLB4sw0k6tZe/+22Nf6Mmd+m94 fQo2FlbbvW5DR1/ivoLz89mFSL0dssIKU2Qb3B2kljEdR+6k8BlxCstuWVBETGIFde IlKixUVmRP4VvaRgb7zdCG6CZKwQm3e3QaQ2lVWBRLmlFM4CGaVudjsiSOOufh+kRW VqsnCvAGGm05g== Received: by phobos.denx.de (Postfix, from userid 109) id 31227842C4; Wed, 25 May 2022 09:40:28 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on phobos.denx.de X-Spam-Level: X-Spam-Status: No, score=-1.1 required=5.0 tests=BAYES_00,SPF_HELO_NONE, SPF_NEUTRAL,T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.2 Received: from mout-u-107.mailbox.org (mout-u-107.mailbox.org [91.198.250.252]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by phobos.denx.de (Postfix) with ESMTPS id 80C17842C9 for ; Wed, 25 May 2022 09:40:22 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=none (p=none dis=none) header.from=denx.de Authentication-Results: phobos.denx.de; spf=fail smtp.mailfrom=sr@denx.de Received: from smtp1.mailbox.org (smtp1.mailbox.org [IPv6:2001:67c:2050:b231:465::1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-384) server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mout-u-107.mailbox.org (Postfix) with ESMTPS id 4L7NJh4JZ2z9sSx; Wed, 25 May 2022 09:40:20 +0200 (CEST) From: Stefan Roese To: u-boot@lists.denx.de Cc: trini@konsulko.com, sjg@chromium.org, cchavva@marvell.com, awilliams@marvell.com Subject: [PATCH 0/7] Add support for cyclic function execution infrastruture Date: Wed, 25 May 2022 09:40:12 +0200 Message-Id: <20220525074019.946607-1-sr@denx.de> MIME-Version: 1.0 X-Rspamd-Queue-Id: 4L7NJh4JZ2z9sSx X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.39 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.5 at phobos.denx.de X-Virus-Status: Clean This patchset adds the basic infrastructure to periodically execute code, e.g. all 100ms. Examples for such functions might be LED blinking etc. The functions that are hooked into this cyclic list should be small timewise as otherwise the execution of the other code that relies on a high frequent polling (e.g. UART rx char ready check) might be delayed too much. This patch also adds the Kconfig option CONFIG_CYCLIC_MAX_CPU_TIME_US, which configures the max allowed time for such a cyclic function. If it's execution time exceeds this time, this cyclic function will get removed from the cyclic list. How is this cyclic functionality executed? This patchset integrates the main function responsible for calling all registered cyclic functions cyclic_run() into the common WATCHDOG_RESET macro. This guarantees that cyclic_run() is executed very often, which is necessary for the cyclic functions to get scheduled and executed at their configured periods. This cyclic infrastructure will be used by a board specific function on the NIC23 MIPS Octeon board, which needs to check periodically, if a PCIe FLR has occurred. Ideas how to continue: One idea is to rename WATCHDOG_RESET to something like SCHEDULE and move the watchdog_reset call into this cyclic infrastructure as well. Or to perhaps move the shell UART RX ready polling to a cyclic function. It's also possible to extend the "cyclic" command, to support the creation of periodically executed shell commands (for testing etc). Thanks, Stefan Aaron Williams (1): mips: octeon_nic23: Add PCIe FLR fixup via cyclic infrastructure Stefan Roese (6): time: Import time_after64() and friends from Linux cyclic: Add basic support for cyclic function execution infrastruture cyclic: Integrate cyclic infrastructure into WATCHDOG_RESET cyclic: Integrate cyclic functionality at bootup in board_r/f cyclic: Add 'cyclic list' command sandbox: Add cyclic demo function MAINTAINERS | 7 + board/Marvell/octeon_nic23/board.c | 197 +++++++++++++++++++++++++++++ board/sandbox/sandbox.c | 15 +++ cmd/Kconfig | 6 + cmd/Makefile | 1 + cmd/cyclic.c | 40 ++++++ common/Kconfig | 22 ++++ common/Makefile | 1 + common/board_f.c | 2 + common/board_r.c | 2 + common/cyclic.c | 112 ++++++++++++++++ configs/octeon_nic23_defconfig | 3 + configs/sandbox_defconfig | 2 + fs/cramfs/uncompress.c | 2 +- include/cyclic.h | 84 ++++++++++++ include/time.h | 19 +++ include/watchdog.h | 23 +++- 17 files changed, 534 insertions(+), 4 deletions(-) create mode 100644 cmd/cyclic.c create mode 100644 common/cyclic.c create mode 100644 include/cyclic.h