From patchwork Thu Jun 11 18:13:40 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hemant Kumar X-Patchwork-Id: 188543 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=-3.5 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=no 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 87A76C433E1 for ; Thu, 11 Jun 2020 18:13:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 61E8B20792 for ; Thu, 11 Jun 2020 18:13:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="Vrcn8xrU" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726880AbgFKSNw (ORCPT ); Thu, 11 Jun 2020 14:13:52 -0400 Received: from m43-7.mailgun.net ([69.72.43.7]:32723 "EHLO m43-7.mailgun.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726651AbgFKSNw (ORCPT ); Thu, 11 Jun 2020 14:13:52 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1591899231; h=Message-Id: Date: Subject: Cc: To: From: Sender; bh=ARvpbt1PAqKaTDTiz8q5xriN6+LTIAWuDHcex9Yx34M=; b=Vrcn8xrUJRax9907fn7CtGTHUHrI0+Cjz0XWl9SRoPulK3N7zkwva/XVfSjUZzkoFtyEU5Gg k5PZLE7mCouvcIkVtqqcNE9LnbQMZ5zPqaZWWLFYgystnFSRdFmd/ijl0YhpzoRRnijrJrb1 0ghaMVTjOIZ1ebAcmyKyHdfx204= 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-n09.prod.us-west-2.postgun.com with SMTP id 5ee2745e117610c7ff93e9f1 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Thu, 11 Jun 2020 18:13:50 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id DB692C433CB; Thu, 11 Jun 2020 18:13:49 +0000 (UTC) Received: from codeaurora.org (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: hemantk) by smtp.codeaurora.org (Postfix) with ESMTPSA id 3A3CFC433C8; Thu, 11 Jun 2020 18:13:49 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 3A3CFC433C8 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=none smtp.mailfrom=hemantk@codeaurora.org From: Hemant Kumar To: manivannan.sadhasivam@linaro.org Cc: linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, jhugo@codeaurora.org, bbhatt@codeaurora.org, Hemant Kumar Subject: [PATCH v3 0/4] user space client interface driver Date: Thu, 11 Jun 2020 11:13:40 -0700 Message-Id: <1591899224-3403-1-git-send-email-hemantk@codeaurora.org> X-Mailer: git-send-email 2.7.4 Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org V3: Added documentation for MHI UCI driver. V2: Added mutex lock to prevent multiple readers to access same mhi buffer which can result into use after free. Hemant Kumar (4): bus: mhi: core: Add helper API to return number of free TREs bus: mhi: core: Move MHI_MAX_MTU to external header file docs: Add documentation for user space client interface bus: mhi: clients: Add user space client interface driver Documentation/mhi/index.rst | 1 + Documentation/mhi/uci.rst | 19 ++ drivers/bus/mhi/Kconfig | 2 + drivers/bus/mhi/Makefile | 1 + drivers/bus/mhi/clients/Kconfig | 16 + drivers/bus/mhi/clients/Makefile | 3 + drivers/bus/mhi/clients/uci.c | 652 +++++++++++++++++++++++++++++++++++++++ drivers/bus/mhi/core/main.c | 12 + include/linux/mhi.h | 12 + 9 files changed, 718 insertions(+) create mode 100644 Documentation/mhi/uci.rst create mode 100644 drivers/bus/mhi/clients/Kconfig create mode 100644 drivers/bus/mhi/clients/Makefile create mode 100644 drivers/bus/mhi/clients/uci.c