From patchwork Fri May 22 02:51:27 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hemant Kumar X-Patchwork-Id: 11564425 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 3EA8490 for ; Fri, 22 May 2020 02:51:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 19C9E207FB for ; Fri, 22 May 2020 02:51:41 +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="XUXZQA/o" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728165AbgEVCvk (ORCPT ); Thu, 21 May 2020 22:51:40 -0400 Received: from mail26.static.mailgun.info ([104.130.122.26]:39250 "EHLO mail26.static.mailgun.info" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727975AbgEVCvj (ORCPT ); Thu, 21 May 2020 22:51:39 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1590115898; h=Message-Id: Date: Subject: Cc: To: From: Sender; bh=NYcDgZyyahLLE5f9Z+PU8f3BZ+2lpwR0G4U8MadhPdY=; b=XUXZQA/osFnGtsTTwFBzr0USxQgnqzPGkJB2s17pvYQO0ek4wl6RIVKcPL+yas6GmyoymZE0 4q6kmPwYqBleLij6loKA4jiafQBlo8RMu1FI2EcgmxhQd54qC3f+doOzRlEwgfqRvBq7+6DP vKTqLxkopnQK0bGSVscdzSwsK9g= X-Mailgun-Sending-Ip: 104.130.122.26 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-west-2.postgun.com with SMTP id 5ec73e3982c96b5d3b12526a (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Fri, 22 May 2020 02:51:37 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 1CDBFC433A0; Fri, 22 May 2020 02:51:37 +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=-1.0 required=2.0 tests=ALL_TRUSTED,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.0 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 3FF93C43387; Fri, 22 May 2020 02:51:36 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 3FF93C43387 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 v2 0/3] user space client interface driver Date: Thu, 21 May 2020 19:51:27 -0700 Message-Id: <1590115890-12278-1-git-send-email-hemantk@codeaurora.org> X-Mailer: git-send-email 1.9.1 Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org V2: Added mutex lock to prevent multiple readers to access same mhi buffer which can result into use after free. Hemant Kumar (3): bus: mhi: core: Add helper API to return number of free TREs bus: mhi: core: Move MHI_MAX_MTU to external header file bus: mhi: clients: Add user space client interface driver 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 + 7 files changed, 698 insertions(+) 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