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Fri, 7 Jun 2019 14:48:12 +0000 Received: from hqnvemgw01.nvidia.com (172.20.150.20) by HQMAIL106.nvidia.com (172.18.146.12) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Fri, 7 Jun 2019 14:48:12 +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 ; Fri, 07 Jun 2019 07:48:11 -0700 From: Vidya Sagar To: , , , , , , , , , , Subject: [PATCH V9 07/15] PCI: dwc: Add support to enable CDM register check Date: Fri, 7 Jun 2019 20:16:32 +0530 Message-ID: <20190607144640.13427-8-vidyas@nvidia.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190607144640.13427-1-vidyas@nvidia.com> References: <20190607144640.13427-1-vidyas@nvidia.com> X-NVConfidentiality: public MIME-Version: 1.0 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1559918892; bh=2GBeMR3LkVaG4OFwVDfH40B9iaVHJt5VRaWHXUfJHms=; h=X-PGP-Universal:From:To:CC:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:X-NVConfidentiality:MIME-Version: Content-Type; b=IGlhM8d7N8C4ilu6InzsTagVZQn0GlxPN4al1IaQ6QHUDIrqJ5qv2FVehQ+xxBIhY tyM8q4g58vnfqQRl53b0lhTs0ihDDS/zGr7tCu+3ZuNV+0o46wnsW4/rVC+/CTcgCg S41cscJrqaU2wwGtRxXd26GGsV77f2N7dI70JZdkQMFvSmyRWO7IVMuu2hShkQDl6R F6WIzos+VpsY6lNCq96f1m6o7Bd746rFPfhY/yZhshqUkhncRvjnnu3S2MtoDrgl2J jNjrPuqyT74H9tajiZcxiZQxspeDt77kJcxzaYZrwKcTc2MFiEoW1uenZM2rDw/Vj5 rvdXHZauNA7fA== X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190607_074813_765838_6B89A989 X-CRM114-Status: UNSURE ( 6.79 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, mmaddireddy@nvidia.com, kthota@nvidia.com, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, mperttunen@nvidia.com, linux-tegra@vger.kernel.org, digetx@gmail.com, vidyas@nvidia.com, linux-arm-kernel@lists.infradead.org, sagar.tv@gmail.com Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add support to enable CDM (Configuration Dependent Module) register check for any data corruption based on the device-tree flag 'snps,enable-cdm-check'. Signed-off-by: Vidya Sagar Acked-by: Gustavo Pimentel Reviewed-by: Thierry Reding --- Changes since [v8]: * None Changes since [v7]: * None Changes since [v6]: * Changed "enable-cdm-check" to "snps,enable-cdm-check" Changes since [v5]: * None Changes since [v4]: * None Changes since [v3]: * None 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 d8be6c3339fa..e9a059163034 100644 --- a/drivers/pci/controller/dwc/pcie-designware.c +++ b/drivers/pci/controller/dwc/pcie-designware.c @@ -521,4 +521,11 @@ 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, "snps,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 45cd7c88d28a..6f555025caf9 100644 --- a/drivers/pci/controller/dwc/pcie-designware.h +++ b/drivers/pci/controller/dwc/pcie-designware.h @@ -86,6 +86,15 @@ #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 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel