From patchwork Tue May 4 23:37:55 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bhaumik Bhatt X-Patchwork-Id: 431277 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=-16.8 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, 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 3C8F4C433ED for ; Tue, 4 May 2021 23:38:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1CED6613DD for ; Tue, 4 May 2021 23:38:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231527AbhEDXjF (ORCPT ); Tue, 4 May 2021 19:39:05 -0400 Received: from m43-7.mailgun.net ([69.72.43.7]:36778 "EHLO m43-7.mailgun.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231501AbhEDXjE (ORCPT ); Tue, 4 May 2021 19:39:04 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1620171489; h=References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=8Skz9Xf7R3TKF0meTNKBjx7NrjKcGugqSKALGry+O8g=; b=lShh5d2n+lwi44WIb5ekP2VdWA/oebGue/V96gXHBLDnRS2BZWu8R18ucaEeh06GOqfxUrOu ZzCDy7h4CDBVmU+6s2ZF/DWuBpCDEYjo9NMb1bi2fgOEEwXZ8j+FTGuTqawjL0eU/7Pf2qId 1KfZei/JODbe84xErbkhEsHK7dY= X-Mailgun-Sending-Ip: 69.72.43.7 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-n04.prod.us-west-2.postgun.com with SMTP id 6091dae0f34440a9d4e2cd33 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Tue, 04 May 2021 23:38:08 GMT Sender: bbhatt=codeaurora.org@mg.codeaurora.org Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 9033EC433D3; Tue, 4 May 2021 23:38:08 +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 64686C43460; Tue, 4 May 2021 23:38:07 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 64686C43460 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, linux-wireless@vger.kernel.org, kvalo@codeaurora.org, ath11k@lists.infradead.org, Bhaumik Bhatt Subject: [PATCH v2 3/6] bus: mhi: Add MMIO region length to controller structure Date: Tue, 4 May 2021 16:37:55 -0700 Message-Id: <1620171478-35679-4-git-send-email-bbhatt@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1620171478-35679-1-git-send-email-bbhatt@codeaurora.org> References: <1620171478-35679-1-git-send-email-bbhatt@codeaurora.org> Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Make controller driver specify the MMIO register region length for range checking of BHI or BHIe space. This can help validate that offsets are in acceptable memory region or not and avoid any boot-up issues due to BHI or BHIe memory accesses. Signed-off-by: Bhaumik Bhatt --- include/linux/mhi.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/linux/mhi.h b/include/linux/mhi.h index 944aa3a..f6901db 100644 --- a/include/linux/mhi.h +++ b/include/linux/mhi.h @@ -293,6 +293,7 @@ struct mhi_controller_config { * @mhi_dev: MHI device instance for the controller * @debugfs_dentry: MHI controller debugfs directory * @regs: Base address of MHI MMIO register space (required) + * @reg_len: Length of the MHI MMIO region (required) * @bhi: Points to base of MHI BHI register space * @bhie: Points to base of MHI BHIe register space * @wake_db: MHI WAKE doorbell register address @@ -386,6 +387,7 @@ struct mhi_controller { size_t rddm_size; size_t sbl_size; size_t seg_len; + size_t reg_len; struct image_info *fbc_image; struct image_info *rddm_image; struct mhi_chan *mhi_chan;