From mboxrd@z Thu Jan 1 00:00:00 1970 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=-11.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 ABA3CC433DB for ; Mon, 8 Feb 2021 21:23:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4D85C64E6F for ; Mon, 8 Feb 2021 21:23:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236582AbhBHVXD (ORCPT ); Mon, 8 Feb 2021 16:23:03 -0500 Received: from so15.mailgun.net ([198.61.254.15]:18999 "EHLO so15.mailgun.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236710AbhBHUMJ (ORCPT ); Mon, 8 Feb 2021 15:12:09 -0500 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1612815118; h=Message-Id: Date: Subject: Cc: To: From: Sender; bh=pF/H3tz47abRO9pnlfNLvpGP6QEDv7YTlTn7Ou/sjps=; b=Zfu64rhc33QZr18eY3Fa8cjFBoDCdf8F3W92eBWWFmOw1D3hYSNrXVyRiCvz5p3YSCjRJKQU z4j/cfhsFAQI9iOZudVNbgHz/CyVuld7d7T4J27b4WYvQh/QPBVbvGnPj07OSJSuY+DV4sss UXEw6XmLKUhN9J71U8AWHbbH2aQ= X-Mailgun-Sending-Ip: 198.61.254.15 X-Mailgun-Sid: WyI0MWYwYSIsICJsaW51eC1rZXJuZWxAdmdlci5rZXJuZWwub3JnIiwgImJlOWU0YSJd Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n07.prod.us-east-1.postgun.com with SMTP id 60219ae2e4842e91287f3397 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Mon, 08 Feb 2021 20:11:14 GMT Sender: bbhatt=codeaurora.org@mg.codeaurora.org Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 0A540C43461; Mon, 8 Feb 2021 20:11:14 +0000 (UTC) Received: from malabar-linux.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: bbhatt) by smtp.codeaurora.org (Postfix) with ESMTPSA id E2E55C433C6; Mon, 8 Feb 2021 20:11:12 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org E2E55C433C6 Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=fail smtp.mailfrom=bbhatt@codeaurora.org From: Bhaumik Bhatt To: manivannan.sadhasivam@linaro.org Cc: linux-arm-msm@vger.kernel.org, hemantk@codeaurora.org, jhugo@codeaurora.org, linux-kernel@vger.kernel.org, loic.poulain@linaro.org, carl.yin@quectel.com, naveen.kumar@quectel.com, Bhaumik Bhatt Subject: [PATCH v3 0/3] Serialize execution environment changes for MHI Date: Mon, 8 Feb 2021 12:10:59 -0800 Message-Id: <1612815062-4738-1-git-send-email-bbhatt@codeaurora.org> X-Mailer: git-send-email 2.7.4 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org v3: -Update commit text to accurately reflect changes and reasoning based on reviews v2: -Add patch to clear devices when moving execution environments During full boot chain firmware download, the PM state worker downloads the AMSS image after waiting for the SBL execution environment change in PBL mode itself. Since getting rid of the firmware load worker thread, this design needs to change and MHI host must download the AMSS image from the SBL mode of PM state worker thread instead of blocking waits for SBL EE in PBL transition processing. Ensure that EE changes are handled only from appropriate places and occur one after another and handle only PBL or RDDM EE changes as critical events directly from the interrupt handler and the status callback is given to the controller drivers promptly. When moving from SBL to AMSS EE, clear SBL specific client devices by calling remove callbacks for them so they are not left opened in a different execution environment. Bhaumik Bhatt (3): bus: mhi: core: Clear devices when moving execution environments bus: mhi: core: Download AMSS image from appropriate function bus: mhi: core: Process execution environment changes serially drivers/bus/mhi/core/boot.c | 44 ++++++++++++++++++++--------------------- drivers/bus/mhi/core/internal.h | 1 + drivers/bus/mhi/core/main.c | 36 +++++++++++++++++++++++---------- drivers/bus/mhi/core/pm.c | 10 ++++++++-- 4 files changed, 56 insertions(+), 35 deletions(-) -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project