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=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 601CBC282DA for ; Tue, 16 Apr 2019 19:28:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3223420880 for ; Tue, 16 Apr 2019 19:28:50 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=nvidia.com header.i=@nvidia.com header.b="WPYT0BEa" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730564AbfDPT2s (ORCPT ); Tue, 16 Apr 2019 15:28:48 -0400 Received: from hqemgate15.nvidia.com ([216.228.121.64]:6742 "EHLO hqemgate15.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728734AbfDPT2r (ORCPT ); Tue, 16 Apr 2019 15:28:47 -0400 Received: from hqpgpgate101.nvidia.com (Not Verified[216.228.121.13]) by hqemgate15.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Tue, 16 Apr 2019 12:28:26 -0700 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate101.nvidia.com (PGP Universal service); Tue, 16 Apr 2019 12:28:46 -0700 X-PGP-Universal: processed; by hqpgpgate101.nvidia.com on Tue, 16 Apr 2019 12:28:46 -0700 Received: from HQMAIL110.nvidia.com (172.18.146.15) by HQMAIL101.nvidia.com (172.20.187.10) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Tue, 16 Apr 2019 19:28:46 +0000 Received: from HQMAIL108.nvidia.com (172.18.146.13) by hqmail110.nvidia.com (172.18.146.15) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Tue, 16 Apr 2019 19:28:39 +0000 Received: from hqnvemgw01.nvidia.com (172.20.150.20) by HQMAIL108.nvidia.com (172.18.146.13) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Tue, 16 Apr 2019 19:28:39 +0000 Received: from vidyas-desktop.nvidia.com (Not Verified[10.24.37.38]) by hqnvemgw01.nvidia.com with Trustwave SEG (v7,5,8,10121) id ; Tue, 16 Apr 2019 12:28:38 -0700 From: Vidya Sagar To: , , , , , , , , , , CC: , , , , , , , , , Subject: [PATCH V3 08/16] PCI: dwc: Add support to enable CDM register check Date: Wed, 17 Apr 2019 00:57:22 +0530 Message-ID: <20190416192730.15681-9-vidyas@nvidia.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190416192730.15681-1-vidyas@nvidia.com> References: <20190416192730.15681-1-vidyas@nvidia.com> X-NVConfidentiality: public MIME-Version: 1.0 Content-Type: text/plain DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1555442906; bh=Wo5s7qFXVF6yP4raZG59sUaja/C5ExrZQIki8sI6xLA=; h=X-PGP-Universal:From:To:CC:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:X-NVConfidentiality:MIME-Version: Content-Type; b=WPYT0BEaKyXBakDHkBpcPJa1GAO7/CsVD4CSsTM8e/YYBHBwGpcY+GGtYhRSLWgoW S3dDCciCPFRK9ON4+A27BnS/4i18zL4Wlf0qKGyFUzKaKj/gMZRqjCh9dZ3jg3cMXV xVzSHhqJJO7fyKUk6UjfFtomChaxRgwQKFlZ76fAvB+5xv4mT9lDTUbqLphg4MtnU6 giNc+mh+J1sMkHgfgEZAbbLtkVV2bFoKA91264ydF5yX+DyPw/Sy2Iu0BKKRx42uq0 ppwDAWWRF7YWqt6ptFoKiHAHDdWkCmkQbVfUXQmi2BLSNjaoUdMP3388jtvL4DhOjN S+m/bDTNrQmhQ== Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Add support to enable CDM (Configuration Dependent Module) register check for any data corruption based on the device-tree flag 'enable-cdm-check'. Signed-off-by: Vidya Sagar --- Changes since [v2]: * Changed code and commit description to reflect change in flag from 'cdm-check' to 'enable-cdm-check' Changes since [v1]: * This is a new patch in v2 series drivers/pci/controller/dwc/pcie-designware.c | 7 +++++++ drivers/pci/controller/dwc/pcie-designware.h | 9 +++++++++ 2 files changed, 16 insertions(+) diff --git a/drivers/pci/controller/dwc/pcie-designware.c b/drivers/pci/controller/dwc/pcie-designware.c index 44c0ba078452..5b416f483426 100644 --- a/drivers/pci/controller/dwc/pcie-designware.c +++ b/drivers/pci/controller/dwc/pcie-designware.c @@ -503,4 +503,11 @@ void dw_pcie_setup(struct dw_pcie *pci) break; } dw_pcie_writel_dbi(pci, PCIE_LINK_WIDTH_SPEED_CONTROL, val); + + if (of_property_read_bool(np, "enable-cdm-check")) { + val = dw_pcie_readl_dbi(pci, PCIE_PL_CHK_REG_CONTROL_STATUS); + val |= PCIE_PL_CHK_REG_CHK_REG_CONTINUOUS | + PCIE_PL_CHK_REG_CHK_REG_START; + dw_pcie_writel_dbi(pci, PCIE_PL_CHK_REG_CONTROL_STATUS, val); + } } diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h index fa41d675c48f..7f57fe019fbf 100644 --- a/drivers/pci/controller/dwc/pcie-designware.h +++ b/drivers/pci/controller/dwc/pcie-designware.h @@ -83,6 +83,15 @@ #define PCIE_MISC_CONTROL_1_OFF 0x8BC #define PCIE_DBI_RO_WR_EN BIT(0) +#define PCIE_PL_CHK_REG_CONTROL_STATUS 0xB20 +#define PCIE_PL_CHK_REG_CHK_REG_START BIT(0) +#define PCIE_PL_CHK_REG_CHK_REG_CONTINUOUS BIT(1) +#define PCIE_PL_CHK_REG_CHK_REG_COMPARISON_ERROR BIT(16) +#define PCIE_PL_CHK_REG_CHK_REG_LOGIC_ERROR BIT(17) +#define PCIE_PL_CHK_REG_CHK_REG_COMPLETE BIT(18) + +#define PCIE_PL_CHK_REG_ERR_ADDR 0xB28 + /* * iATU Unroll-specific register definitions * From 4.80 core version the address translation will be made by unroll -- 2.17.1