From patchwork Wed Feb 24 23:23:03 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bhaumik Bhatt X-Patchwork-Id: 12102931 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=-16.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 4F023C433E6 for ; Wed, 24 Feb 2021 23:24:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1D75B64F0B for ; Wed, 24 Feb 2021 23:24:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236228AbhBXXYP (ORCPT ); Wed, 24 Feb 2021 18:24:15 -0500 Received: from m42-2.mailgun.net ([69.72.42.2]:51757 "EHLO m42-2.mailgun.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236231AbhBXXYG (ORCPT ); Wed, 24 Feb 2021 18:24:06 -0500 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1614209021; h=References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=gFp1MHXgiFd4va2p4bGUn5Sa9t9xzQ+yKlWBiArh0+M=; b=wMxUcfhnP4jQ02sfgVpzbnweNpt6D0RCdVtddnjUQtIHUDO//BpPTg83pC74j4/ARt4bZpNH y6Lr1ZqTJ4/u85noZsAw1+77hZR5aQjSEpb7FFd/Zq9VFVSN4abYhtGZsJM/uSd4mvkXv99b YQeeTH5Olh1WglFiQwhLGQj54hU= X-Mailgun-Sending-Ip: 69.72.42.2 X-Mailgun-Sid: WyI1MzIzYiIsICJsaW51eC1hcm0tbXNtQHZnZXIua2VybmVsLm9yZyIsICJiZTllNGEiXQ== 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 6036dfe248e80e1dc5bab88c (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Wed, 24 Feb 2021 23:23:14 GMT Sender: bbhatt=codeaurora.org@mg.codeaurora.org Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 529E7C43464; Wed, 24 Feb 2021 23:23:13 +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 36F1BC433ED; Wed, 24 Feb 2021 23:23:12 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 36F1BC433ED 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 v6 2/4] bus: mhi: core: Download AMSS image from appropriate function Date: Wed, 24 Feb 2021 15:23:03 -0800 Message-Id: <1614208985-20851-3-git-send-email-bbhatt@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1614208985-20851-1-git-send-email-bbhatt@codeaurora.org> References: <1614208985-20851-1-git-send-email-bbhatt@codeaurora.org> Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org During full boot chain firmware download, the PM state worker downloads the AMSS image after a blocking wait for the SBL execution environment change when running in PBL transition itself. Improve this design by having the host download the AMSS image from the SBL transition of PM state worker thread when a DEV_ST_TRANSITION_SBL is queued instead of the blocking wait. Signed-off-by: Bhaumik Bhatt Reviewed-by: Manivannan Sadhasivam Reviewed-by: Loic Poulain --- drivers/bus/mhi/core/boot.c | 51 +++++++++++++++++++---------------------- drivers/bus/mhi/core/internal.h | 1 + drivers/bus/mhi/core/pm.c | 2 ++ 3 files changed, 27 insertions(+), 27 deletions(-) diff --git a/drivers/bus/mhi/core/boot.c b/drivers/bus/mhi/core/boot.c index c2546bf..08c2874 100644 --- a/drivers/bus/mhi/core/boot.c +++ b/drivers/bus/mhi/core/boot.c @@ -389,7 +389,6 @@ static void mhi_firmware_copy(struct mhi_controller *mhi_cntrl, void mhi_fw_load_handler(struct mhi_controller *mhi_cntrl) { const struct firmware *firmware = NULL; - struct image_info *image_info; struct device *dev = &mhi_cntrl->mhi_dev->dev; const char *fw_name; void *buf; @@ -491,44 +490,42 @@ void mhi_fw_load_handler(struct mhi_controller *mhi_cntrl) fw_load_ee_pthru: /* Transitioning into MHI RESET->READY state */ ret = mhi_ready_state_transition(mhi_cntrl); - - if (!mhi_cntrl->fbc_download) - return; - if (ret) { dev_err(dev, "MHI did not enter READY state\n"); goto error_ready_state; } - /* Wait for the SBL event */ - ret = wait_event_timeout(mhi_cntrl->state_event, - mhi_cntrl->ee == MHI_EE_SBL || - MHI_PM_IN_ERROR_STATE(mhi_cntrl->pm_state), - msecs_to_jiffies(mhi_cntrl->timeout_ms)); + dev_info(dev, "Wait for device to enter SBL or Mission mode\n"); + return; - if (!ret || MHI_PM_IN_ERROR_STATE(mhi_cntrl->pm_state)) { - dev_err(dev, "MHI did not enter SBL\n"); - goto error_ready_state; +error_ready_state: + if (mhi_cntrl->fbc_download) { + mhi_free_bhie_table(mhi_cntrl, mhi_cntrl->fbc_image); + mhi_cntrl->fbc_image = NULL; } - /* Start full firmware image download */ - image_info = mhi_cntrl->fbc_image; +error_fw_load: + mhi_cntrl->pm_state = MHI_PM_FW_DL_ERR; + wake_up_all(&mhi_cntrl->state_event); +} + +int mhi_download_amss_image(struct mhi_controller *mhi_cntrl) +{ + struct image_info *image_info = mhi_cntrl->fbc_image; + struct device *dev = &mhi_cntrl->mhi_dev->dev; + int ret; + + if (!image_info) + return -EIO; + ret = mhi_fw_load_bhie(mhi_cntrl, /* Vector table is the last entry */ &image_info->mhi_buf[image_info->entries - 1]); if (ret) { - dev_err(dev, "MHI did not load image over BHIe, ret: %d\n", - ret); - goto error_fw_load; + dev_err(dev, "MHI did not load AMSS, ret:%d\n", ret); + mhi_cntrl->pm_state = MHI_PM_FW_DL_ERR; + wake_up_all(&mhi_cntrl->state_event); } - return; - -error_ready_state: - mhi_free_bhie_table(mhi_cntrl, mhi_cntrl->fbc_image); - mhi_cntrl->fbc_image = NULL; - -error_fw_load: - mhi_cntrl->pm_state = MHI_PM_FW_DL_ERR; - wake_up_all(&mhi_cntrl->state_event); + return ret; } diff --git a/drivers/bus/mhi/core/internal.h b/drivers/bus/mhi/core/internal.h index 6f80ec3..6f37439 100644 --- a/drivers/bus/mhi/core/internal.h +++ b/drivers/bus/mhi/core/internal.h @@ -619,6 +619,7 @@ int mhi_pm_m3_transition(struct mhi_controller *mhi_cntrl); int __mhi_device_get_sync(struct mhi_controller *mhi_cntrl); int mhi_send_cmd(struct mhi_controller *mhi_cntrl, struct mhi_chan *mhi_chan, enum mhi_cmd_type cmd); +int mhi_download_amss_image(struct mhi_controller *mhi_cntrl); static inline bool mhi_is_active(struct mhi_controller *mhi_cntrl) { return (mhi_cntrl->dev_state >= MHI_STATE_M0 && diff --git a/drivers/bus/mhi/core/pm.c b/drivers/bus/mhi/core/pm.c index 3bd81d0..c09ec13 100644 --- a/drivers/bus/mhi/core/pm.c +++ b/drivers/bus/mhi/core/pm.c @@ -758,6 +758,8 @@ void mhi_pm_st_worker(struct work_struct *work) * either SBL or AMSS states */ mhi_create_devices(mhi_cntrl); + if (mhi_cntrl->fbc_download) + mhi_download_amss_image(mhi_cntrl); break; case DEV_ST_TRANSITION_MISSION_MODE: mhi_pm_mission_mode_transition(mhi_cntrl);