From patchwork Tue Aug 31 20:03:15 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dinh Nguyen X-Patchwork-Id: 12467737 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=-16.6 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNWANTED_LANGUAGE_BODY, 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 1167EC43214 for ; Tue, 31 Aug 2021 20:03:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E42F761059 for ; Tue, 31 Aug 2021 20:03:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240004AbhHaUEf (ORCPT ); Tue, 31 Aug 2021 16:04:35 -0400 Received: from mail.kernel.org ([198.145.29.99]:38320 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239662AbhHaUEe (ORCPT ); Tue, 31 Aug 2021 16:04:34 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 7133960238; Tue, 31 Aug 2021 20:03:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1630440219; bh=vRW9bfliGgi3M2Pqi3B8DPXC75HrCI/z3OLaZgRrVm4=; h=From:To:Cc:Subject:Date:From; b=c+n2C2uXjpsgG+IMvy7GFarjuyy9OOh88JPopnrmM35XUt2kVJLSW0TqcN0C4t5+H LpygCEwaDdIkUIgSIqInztLZy9fnac8wWg+YrRfeETvap2T2/iySy+ZyvFW48jCDhe UPSWmECNnA8+QXePzRs/O7cgRK9XfTb/sfKjS9JJB/l7s/MNVTv9B3OubY7/HHnor7 SvxYhbBpCNqFfrsciovk8c2h73yCkqORUSPm6L6MGMBx713OQe9Q4CwKPCBoiBIvbm EMIoIIaICTARiBGN8INkzBo0Wm/PNT7JHl62l8zL2F74TJMck3eRx5lUOZdkQY7sjs 0aInPP90zpCMA== From: Dinh Nguyen To: michal.simek@xilinx.com Cc: dinguyen@kernel.org, bp@alien8.de, mchehab@kernel.org, tony.luck@intel.com, james.morse@arm.com, rric@kernel.org, linux-kernel@vger.kernel.org, linux-edac@vger.kernel.org Subject: [PATCH 1/2] EDAC/synopsys: add support for version 3 of the Synopsys EDAC DDR Date: Tue, 31 Aug 2021 15:03:15 -0500 Message-Id: <20210831200316.3208310-1-dinguyen@kernel.org> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-edac@vger.kernel.org This patch adds support for version 3.80a of the Synopsys DDR controller with EDAC. This version of the controller has the following differences: - UE/CE are auto cleared - Interrupts are supported by default Signed-off-by: Dinh Nguyen --- drivers/edac/synopsys_edac.c | 53 ++++++++++++++++++++++++++++++------ 1 file changed, 44 insertions(+), 9 deletions(-) diff --git a/drivers/edac/synopsys_edac.c b/drivers/edac/synopsys_edac.c index 7e7146b22c16..297845e65b65 100644 --- a/drivers/edac/synopsys_edac.c +++ b/drivers/edac/synopsys_edac.c @@ -101,6 +101,7 @@ /* DDR ECC Quirks */ #define DDR_ECC_INTR_SUPPORT BIT(0) #define DDR_ECC_DATA_POISON_SUPPORT BIT(1) +#define DDR_ECC_INTR_SELF_CLEAR BIT(2) /* ZynqMP Enhanced DDR memory controller registers that are relevant to ECC */ /* ECC Configuration Registers */ @@ -171,6 +172,10 @@ #define DDR_QOS_IRQ_EN_OFST 0x20208 #define DDR_QOS_IRQ_DB_OFST 0x2020C +/* DDR QOS Interrupt register definitions */ +#define DDR_UE_MASK 0x200 +#define DDR_CE_MASK 0x100 + /* ECC Corrected Error Register Mask and Shifts*/ #define ECC_CEADDR0_RW_MASK 0x3FFFF #define ECC_CEADDR0_RNK_MASK BIT(24) @@ -533,10 +538,16 @@ static irqreturn_t intr_handler(int irq, void *dev_id) priv = mci->pvt_info; p_data = priv->p_data; - regval = readl(priv->baseaddr + DDR_QOS_IRQ_STAT_OFST); - regval &= (DDR_QOSCE_MASK | DDR_QOSUE_MASK); - if (!(regval & ECC_CE_UE_INTR_MASK)) - return IRQ_NONE; + /* + * v3.0 of the controller has the ce/ue bits cleared automatically + * cleared, so this condition does not apply. + */ + if (!(priv->p_data->quirks & DDR_ECC_INTR_SELF_CLEAR)) { + regval = readl(priv->baseaddr + DDR_QOS_IRQ_STAT_OFST); + regval &= (DDR_QOSCE_MASK | DDR_QOSUE_MASK); + if (!(regval & ECC_CE_UE_INTR_MASK)) + return IRQ_NONE; + } status = p_data->get_error_info(priv); if (status) @@ -548,7 +559,9 @@ static irqreturn_t intr_handler(int irq, void *dev_id) edac_dbg(3, "Total error count CE %d UE %d\n", priv->ce_cnt, priv->ue_cnt); - writel(regval, priv->baseaddr + DDR_QOS_IRQ_STAT_OFST); + /* v3.0 of the controller does not have this register */ + if (!(priv->p_data->quirks & DDR_ECC_INTR_SELF_CLEAR)) + writel(regval, priv->baseaddr + DDR_QOS_IRQ_STAT_OFST); return IRQ_HANDLED; } @@ -834,8 +847,13 @@ static void mc_init(struct mem_ctl_info *mci, struct platform_device *pdev) static void enable_intr(struct synps_edac_priv *priv) { /* Enable UE/CE Interrupts */ - writel(DDR_QOSUE_MASK | DDR_QOSCE_MASK, - priv->baseaddr + DDR_QOS_IRQ_EN_OFST); + if (priv->p_data->quirks & DDR_ECC_INTR_SELF_CLEAR) + writel(DDR_UE_MASK | DDR_CE_MASK, + priv->baseaddr + ECC_CLR_OFST); + else + writel(DDR_QOSUE_MASK | DDR_QOSCE_MASK, + priv->baseaddr + DDR_QOS_IRQ_EN_OFST); + } static void disable_intr(struct synps_edac_priv *priv) @@ -890,6 +908,19 @@ static const struct synps_platform_data zynqmp_edac_def = { ), }; +static const struct synps_platform_data synopsys_edac_def = { + .get_error_info = zynqmp_get_error_info, + .get_mtype = zynqmp_get_mtype, + .get_dtype = zynqmp_get_dtype, + .get_ecc_state = zynqmp_get_ecc_state, + .quirks = (DDR_ECC_INTR_SUPPORT | DDR_ECC_INTR_SELF_CLEAR +#ifdef CONFIG_EDAC_DEBUG + | DDR_ECC_DATA_POISON_SUPPORT +#endif + ), +}; + + static const struct of_device_id synps_edac_match[] = { { .compatible = "xlnx,zynq-ddrc-a05", @@ -899,6 +930,10 @@ static const struct of_device_id synps_edac_match[] = { .compatible = "xlnx,zynqmp-ddrc-2.40a", .data = (void *)&zynqmp_edac_def }, + { + .compatible = "snps,ddrc-3.80a", + .data = (void *)&synopsys_edac_def + }, { /* end of table */ } @@ -1352,8 +1387,8 @@ static int mc_probe(struct platform_device *pdev) } } - if (of_device_is_compatible(pdev->dev.of_node, - "xlnx,zynqmp-ddrc-2.40a")) + if (!of_device_is_compatible(pdev->dev.of_node, + "xlnx,zynq-ddrc-a05")) setup_address_map(priv); #endif