From patchwork Fri Oct 30 04:10:51 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bhaumik Bhatt X-Patchwork-Id: 11868447 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id B73B314C0 for ; Fri, 30 Oct 2020 04:11:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8E88D20729 for ; Fri, 30 Oct 2020 04:11:19 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="WzSsqstd" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726517AbgJ3ELS (ORCPT ); Fri, 30 Oct 2020 00:11:18 -0400 Received: from m42-4.mailgun.net ([69.72.42.4]:39318 "EHLO m42-4.mailgun.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726478AbgJ3ELR (ORCPT ); Fri, 30 Oct 2020 00:11:17 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1604031077; h=References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=wkZr8yAMWfrDxLTJYk/pE4tcsp7MzV+FFMEPUJwqI/I=; b=WzSsqstdd4NgMnEm4t69sxh8+osahKFMO7USk4CAbwnkONVR0A98OVHWFV2IL71WowkcZVby yz5+qz7GUPemtktCrzofbSR65gkh//Ha8d4ZblCyE7wRwIZuFW5G0a2MKdCrOOoMIO744drc XWEhey2xRjXCGoRpLxNBBE4LE2k= X-Mailgun-Sending-Ip: 69.72.42.4 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-n03.prod.us-east-1.postgun.com with SMTP id 5f9b925d519f072fa43d6b6c (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Fri, 30 Oct 2020 04:11:09 GMT Sender: bbhatt=codeaurora.org@mg.codeaurora.org Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 677B4C433C9; Fri, 30 Oct 2020 04:11:08 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-caf-mail-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=ALL_TRUSTED,BAYES_00,SPF_FAIL, URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 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 8B14DC433C8; Fri, 30 Oct 2020 04:11:07 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 8B14DC433C8 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, Bhaumik Bhatt Subject: [PATCH v3 06/12] bus: mhi: core: Move to an error state on any firmware load failure Date: Thu, 29 Oct 2020 21:10:51 -0700 Message-Id: <1604031057-32820-7-git-send-email-bbhatt@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1604031057-32820-1-git-send-email-bbhatt@codeaurora.org> References: <1604031057-32820-1-git-send-email-bbhatt@codeaurora.org> Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Move MHI to a firmware download error state for a failure to find the firmware files or to load SBL or EBL image using BHI/BHIe. This helps detect an error state sooner and shortens the wait for a synchronous power up timeout. Signed-off-by: Bhaumik Bhatt Reviewed-by: Manivannan Sadhasivam --- drivers/bus/mhi/core/boot.c | 35 ++++++++++++++++++++--------------- 1 file changed, 20 insertions(+), 15 deletions(-) diff --git a/drivers/bus/mhi/core/boot.c b/drivers/bus/mhi/core/boot.c index 7d6b3a7..cec5010 100644 --- a/drivers/bus/mhi/core/boot.c +++ b/drivers/bus/mhi/core/boot.c @@ -425,13 +425,13 @@ void mhi_fw_load_handler(struct mhi_controller *mhi_cntrl) !mhi_cntrl->seg_len))) { dev_err(dev, "No firmware image defined or !sbl_size || !seg_len\n"); - return; + goto error_fw_load; } ret = request_firmware(&firmware, fw_name, dev); if (ret) { dev_err(dev, "Error loading firmware: %d\n", ret); - return; + goto error_fw_load; } size = (mhi_cntrl->fbc_download) ? mhi_cntrl->sbl_size : firmware->size; @@ -443,7 +443,7 @@ void mhi_fw_load_handler(struct mhi_controller *mhi_cntrl) buf = mhi_alloc_coherent(mhi_cntrl, size, &dma_addr, GFP_KERNEL); if (!buf) { release_firmware(firmware); - return; + goto error_fw_load; } /* Download image using BHI */ @@ -451,17 +451,17 @@ void mhi_fw_load_handler(struct mhi_controller *mhi_cntrl) ret = mhi_fw_load_bhi(mhi_cntrl, dma_addr, size); mhi_free_coherent(mhi_cntrl, size, buf, dma_addr); - if (!mhi_cntrl->fbc_download || ret || mhi_cntrl->ee == MHI_EE_EDL) - release_firmware(firmware); - /* Error or in EDL mode, we're done */ if (ret) { dev_err(dev, "MHI did not load image over BHI, ret: %d\n", ret); - return; + release_firmware(firmware); + goto error_fw_load; } - if (mhi_cntrl->ee == MHI_EE_EDL) + if (mhi_cntrl->ee == MHI_EE_EDL) { + release_firmware(firmware); return; + } write_lock_irq(&mhi_cntrl->pm_lock); mhi_cntrl->dev_state = MHI_STATE_RESET; @@ -474,13 +474,17 @@ void mhi_fw_load_handler(struct mhi_controller *mhi_cntrl) if (mhi_cntrl->fbc_download) { ret = mhi_alloc_bhie_table(mhi_cntrl, &mhi_cntrl->fbc_image, firmware->size); - if (ret) - goto error_alloc_fw_table; + if (ret) { + release_firmware(firmware); + goto error_fw_load; + } /* Load the firmware into BHIE vec table */ mhi_firmware_copy(mhi_cntrl, firmware, mhi_cntrl->fbc_image); } + release_firmware(firmware); + fw_load_ee_pthru: /* Transitioning into MHI RESET->READY state */ ret = mhi_ready_state_transition(mhi_cntrl); @@ -509,11 +513,11 @@ void mhi_fw_load_handler(struct mhi_controller *mhi_cntrl) ret = mhi_fw_load_bhie(mhi_cntrl, /* Vector table is the last entry */ &image_info->mhi_buf[image_info->entries - 1]); - if (ret) + if (ret) { dev_err(dev, "MHI did not load image over BHIe, ret: %d\n", ret); - - release_firmware(firmware); + goto error_fw_load; + } return; @@ -521,6 +525,7 @@ void mhi_fw_load_handler(struct mhi_controller *mhi_cntrl) mhi_free_bhie_table(mhi_cntrl, mhi_cntrl->fbc_image); mhi_cntrl->fbc_image = NULL; -error_alloc_fw_table: - release_firmware(firmware); +error_fw_load: + mhi_cntrl->pm_state = MHI_PM_FW_DL_ERR; + wake_up_all(&mhi_cntrl->state_event); }