From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,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 2D3A2C43381 for ; Mon, 25 Mar 2019 03:24:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0544620835 for ; Mon, 25 Mar 2019 03:24:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729648AbfCYDYQ (ORCPT ); Sun, 24 Mar 2019 23:24:16 -0400 Received: from mga18.intel.com ([134.134.136.126]:19159 "EHLO mga18.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729608AbfCYDYN (ORCPT ); Sun, 24 Mar 2019 23:24:13 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by orsmga106.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 24 Mar 2019 20:24:13 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.60,256,1549958400"; d="scan'208";a="310109732" Received: from hao-dev.bj.intel.com ([10.238.157.65]) by orsmga005.jf.intel.com with ESMTP; 24 Mar 2019 20:24:11 -0700 From: Wu Hao To: atull@kernel.org, mdf@kernel.org, linux-fpga@vger.kernel.org, linux-kernel@vger.kernel.org Cc: linux-api@vger.kernel.org, Wu Hao , Xu Yilun Subject: [PATCH 12/17] fpga: dfl: afu: add STP (SignalTap) support Date: Mon, 25 Mar 2019 11:07:39 +0800 Message-Id: <1553483264-5379-13-git-send-email-hao.wu@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1553483264-5379-1-git-send-email-hao.wu@intel.com> References: <1553483264-5379-1-git-send-email-hao.wu@intel.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org STP (SignalTap) is one of the private features under the port for debugging. This patch adds private feature driver support for it to allow userspace applications to mmap related mmio region and provide STP service. Signed-off-by: Xu Yilun Signed-off-by: Wu Hao --- drivers/fpga/dfl-afu-main.c | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) diff --git a/drivers/fpga/dfl-afu-main.c b/drivers/fpga/dfl-afu-main.c index 754729e..14970a4 100644 --- a/drivers/fpga/dfl-afu-main.c +++ b/drivers/fpga/dfl-afu-main.c @@ -518,6 +518,36 @@ static const struct dfl_feature_ops port_afu_ops = { .uinit = port_afu_uinit, }; +static int port_stp_init(struct platform_device *pdev, + struct dfl_feature *feature) +{ + struct resource *res = &pdev->resource[feature->resource_index]; + + dev_dbg(&pdev->dev, "PORT STP Init.\n"); + + return afu_mmio_region_add(dev_get_platdata(&pdev->dev), + DFL_PORT_REGION_INDEX_STP, + resource_size(res), res->start, + DFL_PORT_REGION_MMAP | DFL_PORT_REGION_READ | + DFL_PORT_REGION_WRITE); +} + +static void port_stp_uinit(struct platform_device *pdev, + struct dfl_feature *feature) +{ + dev_dbg(&pdev->dev, "PORT STP UInit.\n"); +} + +static const struct dfl_feature_id port_stp_id_table[] = { + {.id = PORT_FEATURE_ID_STP,}, + {0,} +}; + +static const struct dfl_feature_ops port_stp_ops = { + .init = port_stp_init, + .uinit = port_stp_uinit, +}; + static struct dfl_feature_driver port_feature_drvs[] = { { .id_table = port_hdr_id_table, @@ -532,6 +562,10 @@ static struct dfl_feature_driver port_feature_drvs[] = { .ops = &port_err_ops, }, { + .id_table = port_stp_id_table, + .ops = &port_stp_ops, + }, + { .ops = NULL, } }; -- 2.7.4