From patchwork Fri Feb 21 06:39:16 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sherry Sun X-Patchwork-Id: 11395663 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 19292930 for ; Fri, 21 Feb 2020 06:47:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id ED80224650 for ; Fri, 21 Feb 2020 06:47:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727259AbgBUGrU (ORCPT ); Fri, 21 Feb 2020 01:47:20 -0500 Received: from inva020.nxp.com ([92.121.34.13]:41458 "EHLO inva020.nxp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727066AbgBUGrT (ORCPT ); Fri, 21 Feb 2020 01:47:19 -0500 Received: from inva020.nxp.com (localhost [127.0.0.1]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id B69FE1A6D88; Fri, 21 Feb 2020 07:47:16 +0100 (CET) Received: from invc005.ap-rdc01.nxp.com (invc005.ap-rdc01.nxp.com [165.114.16.14]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 8931A1A6D82; Fri, 21 Feb 2020 07:47:08 +0100 (CET) Received: from localhost.localdomain (shlinux2.ap.freescale.net [10.192.224.44]) by invc005.ap-rdc01.nxp.com (Postfix) with ESMTP id C85EB4043C; Fri, 21 Feb 2020 14:46:10 +0800 (SGT) From: sherry sun To: bp@alien8.de, mchehab@kernel.org, tony.luck@intel.com, james.morse@arm.com, rrichter@marvell.com, michal.simek@xilinx.com, shawnguo@kernel.org, s.hauer@pengutronix.de, robh+dt@kernel.org, mark.rutland@arm.com Cc: linux-edac@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-imx@nxp.com, frank.li@nxp.com Subject: [PATCH 3/3] EDAC: synopsys: Add edac driver support for i.MX8MP Date: Fri, 21 Feb 2020 14:39:16 +0800 Message-Id: <1582267156-20189-4-git-send-email-sherry.sun@nxp.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1582267156-20189-1-git-send-email-sherry.sun@nxp.com> References: <1582267156-20189-1-git-send-email-sherry.sun@nxp.com> X-Virus-Scanned: ClamAV using ClamSMTP Sender: linux-edac-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-edac@vger.kernel.org From: Sherry Sun Since i.MX8MP use synopsys ddr controller IP, so add edac support for i.MX8MP based on synopsys edac driver. i.MX8MP use LPDDR4 and support interrupts for corrected and uncorrected errors. The main difference between ZynqMP and i.MX8MP ddr controller is the interrupt registers. So add another interrupt handler function, enable/disable interrupt function to distinguish with ZynqMP. Signed-off-by: Sherry Sun --- drivers/edac/synopsys_edac.c | 77 +++++++++++++++++++++++++++++++++++- 1 file changed, 76 insertions(+), 1 deletion(-) diff --git a/drivers/edac/synopsys_edac.c b/drivers/edac/synopsys_edac.c index 2d263382d797..66c801502212 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_IMX8MP BIT(2) /* ZynqMP Enhanced DDR memory controller registers that are relevant to ECC */ /* ECC Configuration Registers */ @@ -266,6 +267,11 @@ #define RANK_B0_BASE 6 +/* ECCCTL UE/CE Interrupt enable/disable for IMX8MP*/ +#define DDR_CE_INTR_EN_MASK 0x100 +#define DDR_UE_INTR_EN_MASK 0x200 +#define ECC_INTR_MASK 0x10100 + /** * struct ecc_error_info - ECC error log information. * @row: Row number. @@ -524,6 +530,54 @@ static void handle_error(struct mem_ctl_info *mci, struct synps_ecc_status *p) memset(p, 0, sizeof(*p)); } +static void enable_intr_imx8mp(struct synps_edac_priv *priv) +{ + int regval; + + regval = readl(priv->baseaddr + ECC_CLR_OFST); + regval |= (DDR_CE_INTR_EN_MASK | DDR_UE_INTR_EN_MASK); + writel(regval, priv->baseaddr + ECC_CLR_OFST); +} + +static void disable_intr_imx8mp(struct synps_edac_priv *priv) +{ + int regval; + + regval = readl(priv->baseaddr + ECC_CLR_OFST); + regval &= ~(DDR_CE_INTR_EN_MASK | DDR_UE_INTR_EN_MASK); + writel(regval, priv->baseaddr + ECC_CLR_OFST); +} + +/* Interrupt Handler for ECC interrupts on imx8mp platform. */ +static irqreturn_t intr_handler_imx8mp(int irq, void *dev_id) +{ + const struct synps_platform_data *p_data; + struct mem_ctl_info *mci = dev_id; + struct synps_edac_priv *priv; + int status, regval; + + priv = mci->pvt_info; + p_data = priv->p_data; + + regval = readl(priv->baseaddr + ECC_STAT_OFST); + if (!(regval & ECC_INTR_MASK)) + return IRQ_NONE; + + status = p_data->get_error_info(priv); + if (status) + return IRQ_NONE; + + priv->ce_cnt += priv->stat.ce_cnt; + priv->ue_cnt += priv->stat.ue_cnt; + handle_error(mci, &priv->stat); + + edac_dbg(3, "Total error count CE %d UE %d\n", + priv->ce_cnt, priv->ue_cnt); + enable_intr_imx8mp(priv); + + return IRQ_HANDLED; +} + /** * intr_handler - Interrupt Handler for ECC interrupts. * @irq: IRQ number. @@ -541,6 +595,9 @@ static irqreturn_t intr_handler(int irq, void *dev_id) priv = mci->pvt_info; p_data = priv->p_data; + if (p_data->quirks & DDR_ECC_IMX8MP) + return intr_handler_imx8mp(irq, dev_id); + regval = readl(priv->baseaddr + DDR_QOS_IRQ_STAT_OFST); regval &= (DDR_QOSCE_MASK | DDR_QOSUE_MASK); if (!(regval & ECC_CE_UE_INTR_MASK)) @@ -817,7 +874,7 @@ static void mc_init(struct mem_ctl_info *mci, struct platform_device *pdev) platform_set_drvdata(pdev, mci); /* Initialize controller capabilities and configuration */ - mci->mtype_cap = MEM_FLAG_DDR3 | MEM_FLAG_DDR2; + mci->mtype_cap = MEM_FLAG_LRDDR4 | MEM_FLAG_DDR3 | MEM_FLAG_DDR2; mci->edac_ctl_cap = EDAC_FLAG_NONE | EDAC_FLAG_SECDED; mci->scrub_cap = SCRUB_HW_SRC; mci->scrub_mode = SCRUB_NONE; @@ -842,6 +899,9 @@ 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 */ + if (priv->p_data->quirks & DDR_ECC_IMX8MP) + return enable_intr_imx8mp(priv); + writel(DDR_QOSUE_MASK | DDR_QOSCE_MASK, priv->baseaddr + DDR_QOS_IRQ_EN_OFST); } @@ -849,6 +909,9 @@ static void enable_intr(struct synps_edac_priv *priv) static void disable_intr(struct synps_edac_priv *priv) { /* Disable UE/CE Interrupts */ + if (priv->p_data->quirks & DDR_ECC_IMX8MP) + return disable_intr_imx8mp(priv); + writel(DDR_QOSUE_MASK | DDR_QOSCE_MASK, priv->baseaddr + DDR_QOS_IRQ_DB_OFST); } @@ -898,6 +961,14 @@ static const struct synps_platform_data zynqmp_edac_def = { ), }; +static const struct synps_platform_data imx8mp_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_IMX8MP), +}; + static const struct of_device_id synps_edac_match[] = { { .compatible = "xlnx,zynq-ddrc-a05", @@ -907,6 +978,10 @@ static const struct of_device_id synps_edac_match[] = { .compatible = "xlnx,zynqmp-ddrc-2.40a", .data = (void *)&zynqmp_edac_def }, + { + .compatible = "fsl,imx8mp-ddrc", + .data = (void *)&imx8mp_edac_def + }, { /* end of table */ }