From patchwork Fri Jul 5 00:23:54 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Wu, Hao" X-Patchwork-Id: 11031975 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 0C84413B1 for ; Fri, 5 Jul 2019 00:42:47 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id F09AF28922 for ; Fri, 5 Jul 2019 00:42:46 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E540E28A75; Fri, 5 Jul 2019 00:42:46 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 821A228922 for ; Fri, 5 Jul 2019 00:42:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727532AbfGEAmm (ORCPT ); Thu, 4 Jul 2019 20:42:42 -0400 Received: from mga03.intel.com ([134.134.136.65]:40861 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727889AbfGEAmN (ORCPT ); Thu, 4 Jul 2019 20:42:13 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga103.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 04 Jul 2019 17:42:12 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.63,453,1557212400"; d="scan'208";a="185074803" Received: from hao-dev.bj.intel.com ([10.238.157.65]) by fmsmga001.fm.intel.com with ESMTP; 04 Jul 2019 17:42:10 -0700 From: Wu Hao To: gregkh@linuxfoundation.org, mdf@kernel.org, linux-fpga@vger.kernel.org Cc: linux-kernel@vger.kernel.org, linux-api@vger.kernel.org, atull@kernel.org, Wu Hao , Xu Yilun Subject: [PATCH v2 07/11] fpga: dfl: afu: export __port_enable/disable function. Date: Fri, 5 Jul 2019 08:23:54 +0800 Message-Id: <1562286238-11413-8-git-send-email-hao.wu@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1562286238-11413-1-git-send-email-hao.wu@intel.com> References: <1562286238-11413-1-git-send-email-hao.wu@intel.com> Sender: linux-fpga-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fpga@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP As these two functions are used by other private features. e.g. in error reporting private feature, it requires to check port status and reset port for error clearing. Signed-off-by: Xu Yilun Signed-off-by: Wu Hao Acked-by: Moritz Fischer Acked-by: Alan Tull Signed-off-by: Moritz Fischer --- v2: rebased. --- drivers/fpga/dfl-afu-main.c | 25 ++++++++++++++----------- drivers/fpga/dfl-afu.h | 3 +++ 2 files changed, 17 insertions(+), 11 deletions(-) diff --git a/drivers/fpga/dfl-afu-main.c b/drivers/fpga/dfl-afu-main.c index fbd9553..22d294b 100644 --- a/drivers/fpga/dfl-afu-main.c +++ b/drivers/fpga/dfl-afu-main.c @@ -22,14 +22,16 @@ #include "dfl-afu.h" /** - * port_enable - enable a port + * __port_enable - enable a port * @pdev: port platform device. * * Enable Port by clear the port soft reset bit, which is set by default. * The AFU is unable to respond to any MMIO access while in reset. - * port_enable function should only be used after port_disable function. + * __port_enable function should only be used after __port_disable function. + * + * The caller needs to hold lock for protection. */ -static void port_enable(struct platform_device *pdev) +void __port_enable(struct platform_device *pdev) { struct dfl_feature_platform_data *pdata = dev_get_platdata(&pdev->dev); void __iomem *base; @@ -52,13 +54,14 @@ static void port_enable(struct platform_device *pdev) #define RST_POLL_TIMEOUT 1000 /* us */ /** - * port_disable - disable a port + * __port_disable - disable a port * @pdev: port platform device. * - * Disable Port by setting the port soft reset bit, it puts the port into - * reset. + * Disable Port by setting the port soft reset bit, it puts the port into reset. + * + * The caller needs to hold lock for protection. */ -static int port_disable(struct platform_device *pdev) +int __port_disable(struct platform_device *pdev) { struct dfl_feature_platform_data *pdata = dev_get_platdata(&pdev->dev); void __iomem *base; @@ -104,9 +107,9 @@ static int __port_reset(struct platform_device *pdev) { int ret; - ret = port_disable(pdev); + ret = __port_disable(pdev); if (!ret) - port_enable(pdev); + __port_enable(pdev); return ret; } @@ -806,9 +809,9 @@ static int port_enable_set(struct platform_device *pdev, bool enable) mutex_lock(&pdata->lock); if (enable) - port_enable(pdev); + __port_enable(pdev); else - ret = port_disable(pdev); + ret = __port_disable(pdev); mutex_unlock(&pdata->lock); return ret; diff --git a/drivers/fpga/dfl-afu.h b/drivers/fpga/dfl-afu.h index 0c7630a..35e60c5 100644 --- a/drivers/fpga/dfl-afu.h +++ b/drivers/fpga/dfl-afu.h @@ -79,6 +79,9 @@ struct dfl_afu { struct dfl_feature_platform_data *pdata; }; +void __port_enable(struct platform_device *pdev); +int __port_disable(struct platform_device *pdev); + void afu_mmio_region_init(struct dfl_feature_platform_data *pdata); int afu_mmio_region_add(struct dfl_feature_platform_data *pdata, u32 region_index, u64 region_size, u64 phys, u32 flags);