From patchwork Tue Sep 3 11:47:13 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Qunqin Zhao X-Patchwork-Id: 13788578 Received: from mail.loongson.cn (mail.loongson.cn [114.242.206.163]) by smtp.subspace.kernel.org (Postfix) with ESMTP id DC0AD19F41F; Tue, 3 Sep 2024 11:46:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=114.242.206.163 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725364017; cv=none; b=Dssdcjz1bzqWNK90XtMUW3W2tdyFCO6iaP690qhqa8qWlU4v5immzaq8XXfItxJwdcXtWqXJgKKKduFFGYct74im9ZcwtyEexsV8i5rUfJD+eoGXdglyAcG/4IN4Lki1cs/LJpGYU+IXg4CMIPWxhFxy8nqwa3zuwhEfA9PpM6Q= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725364017; c=relaxed/simple; bh=EvHFZxR8lI+0dioSBkQb9HmMWv9zSBxynOIFR624PsY=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=ahp3bMrcNDIQQWQHogl+FWyClg1xR0UNH443Qii75t6gOe0x0c/eutXkm5I7Wsx/GF4Rk2xDg77323lxHec5DO+x/U3nJEVBfi3QPksXnWrh1e8W+qNf/fmwgvjxE/84tZkOhgNKPvXknF2zbZEAUf835Z0NXrMV22W7RdU8Raw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=loongson.cn; spf=pass smtp.mailfrom=loongson.cn; arc=none smtp.client-ip=114.242.206.163 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=loongson.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=loongson.cn Received: from loongson.cn (unknown [10.40.54.90]) by gateway (Coremail) with SMTP id _____8Axjpst99ZmLiUpAA--.53875S3; Tue, 03 Sep 2024 19:46:53 +0800 (CST) Received: from localhost.localdomain (unknown [10.40.54.90]) by front2 (Coremail) with SMTP id qciowMAxvsUr99ZmONYEAA--.13062S3; Tue, 03 Sep 2024 19:46:53 +0800 (CST) From: Zhao Qunqin To: robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, chenhuacai@kernel.org Cc: linux-edac@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, kernel@xen0n.name, bp@alien8.de, tony.luck@intel.com, james.morse@arm.com, mchehab@kernel.org, rric@kernel.org, loongarch@lists.linux.dev, Zhao Qunqin Subject: [PATCH V3 1/2] dt-bindings: EDAC for ls3a5000 memory controller Date: Tue, 3 Sep 2024 19:47:13 +0800 Message-Id: <20240903114714.11428-2-zhaoqunqin@loongson.cn> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20240903114714.11428-1-zhaoqunqin@loongson.cn> References: <20240903114714.11428-1-zhaoqunqin@loongson.cn> Precedence: bulk X-Mailing-List: linux-edac@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-CM-TRANSID: qciowMAxvsUr99ZmONYEAA--.13062S3 X-CM-SenderInfo: 52kd01pxqtx0o6or00hjvr0hdfq/ X-Coremail-Antispam: 1Uk129KBj93XoW7urWkuFW7Jw1UuF1Utry3ZFc_yoW8KF18pr s3Aan3Kr18K3W7AanYqa48A3WFq34kZ3W7XFsrK3W7KryDWasYvFyYkryUJa15JFykXFW5 ZFySgr42kFsFkabCm3ZEXasCq-sJn29KB7ZKAUJUUUUJ529EdanIXcx71UUUUU7KY7ZEXa sCq-sGcSsGvfJ3Ic02F40EFcxC0VAKzVAqx4xG6I80ebIjqfuFe4nvWSU5nxnvy29KBjDU 0xBIdaVrnRJUUUBmb4IE77IF4wAFF20E14v26r1j6r4UM7CY07I20VC2zVCF04k26cxKx2 IYs7xG6rWj6s0DM7CIcVAFz4kK6r1Y6r17M28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48v e4kI8wA2z4x0Y4vE2Ix0cI8IcVAFwI0_Xr0_Ar1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI 0_Cr0_Gr1UM28EF7xvwVC2z280aVAFwI0_Gr1j6F4UJwA2z4x0Y4vEx4A2jsIEc7CjxVAF wI0_Gr1j6F4UJwAaw2AFwI0_Jw0_GFyle2I262IYc4CY6c8Ij28IcVAaY2xG8wAqjxCEc2 xF0cIa020Ex4CE44I27wAqx4xG64xvF2IEw4CE5I8CrVC2j2WlYx0E2Ix0cI8IcVAFwI0_ Wrv_ZF1lYx0Ex4A2jsIE14v26F4j6r4UJwAm72CE4IkC6x0Yz7v_Jr0_Gr1lF7xvr2IYc2 Ij64vIr41lc7CjxVAaw2AFwI0_GFv_Wryl42xK82IYc2Ij64vIr41l4I8I3I0E4IkC6x0Y z7v_Jr0_Gr1l4IxYO2xFxVAFwI0_Jw0_GFylx2IqxVAqx4xG67AKxVWUJVWUGwC20s026x 8GjcxK67AKxVWUGVWUWwC2zVAF1VAY17CE14v26r1q6r43MIIYrxkI7VAKI48JMIIF0xvE 2Ix0cI8IcVAFwI0_Xr0_Ar1lIxAIcVC0I7IYx2IY6xkF7I0E14v26F4j6r4UJwCI42IY6x AIw20EY4v20xvaj40_Jr0_JF4lIxAIcVC2z280aVAFwI0_Cr0_Gr1UMIIF0xvEx4A2jsIE c7CjxVAFwI0_Gr1j6F4UJbIYCTnIWIevJa73UjIFyTuYvjxUhGNtUUUUU add device tree bindings for ls3a5000 EDAC driver. Signed-off-by: Zhao Qunqin --- .../edac/loongson,ls3a5000-mc-edac.yaml | 44 +++++++++++++++++++ MAINTAINERS | 6 +++ 2 files changed, 50 insertions(+) create mode 100644 Documentation/devicetree/bindings/edac/loongson,ls3a5000-mc-edac.yaml diff --git a/Documentation/devicetree/bindings/edac/loongson,ls3a5000-mc-edac.yaml b/Documentation/devicetree/bindings/edac/loongson,ls3a5000-mc-edac.yaml new file mode 100644 index 000000000..52f10bc94 --- /dev/null +++ b/Documentation/devicetree/bindings/edac/loongson,ls3a5000-mc-edac.yaml @@ -0,0 +1,44 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/edac/loongson,ls3a5000-mc-edac.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Loongson Memory Controller EDAC + +maintainers: + - Zhao Qunqin + +description: | + EDAC node is defined to describe on-chip error detection and correction for + Loongson Memory Controller. + +properties: + compatible: + oneOf: + - enum: + - loongson,ls3a5000-mc-edac + - items: + - enum: + - loongson,ls3c5000l-mc-edac + - loongson,ls3c5000-mc-edac + - loongson,ls3d5000-mc-edac + - loongson,ls3a6000-mc-edac + - loongson,ls3c6000-mc-edac + - const: loongson,ls3a5000-mc-edac + + reg: + maxItems: 1 + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + memory-controller@1fe00600 { + compatible = "loongson,ls3a5000-mc-edac"; + reg = <0x1fe00600 0x50>; + }; diff --git a/MAINTAINERS b/MAINTAINERS index 42decde38..6cc8cfc8f 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -13237,6 +13237,12 @@ S: Maintained F: Documentation/devicetree/bindings/thermal/loongson,ls2k-thermal.yaml F: drivers/thermal/loongson2_thermal.c +LOONGSON EDAC DRIVER +M: Zhao Qunqin +L: linux-edac@vger.kernel.org +S: Maintained +F: Documentation/devicetree/bindings/edac/loongson,ls3a5000-mc-edac.yaml + LSILOGIC MPT FUSION DRIVERS (FC/SAS/SPI) M: Sathya Prakash M: Sreekanth Reddy From patchwork Tue Sep 3 11:47:14 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Qunqin Zhao X-Patchwork-Id: 13788579 Received: from mail.loongson.cn (mail.loongson.cn [114.242.206.163]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 5FBE91B9832; Tue, 3 Sep 2024 11:46:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=114.242.206.163 ARC-Seal: i=1; a=rsa-sha256; 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Tue, 03 Sep 2024 19:46:55 +0800 (CST) Received: from localhost.localdomain (unknown [10.40.54.90]) by front2 (Coremail) with SMTP id qciowMAxvsUr99ZmONYEAA--.13062S4; Tue, 03 Sep 2024 19:46:54 +0800 (CST) From: Zhao Qunqin To: robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, chenhuacai@kernel.org Cc: linux-edac@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, kernel@xen0n.name, bp@alien8.de, tony.luck@intel.com, james.morse@arm.com, mchehab@kernel.org, rric@kernel.org, loongarch@lists.linux.dev, Zhao Qunqin Subject: [PATCH V3 2/2] Loongarch: EDAC driver for loongson memory controller Date: Tue, 3 Sep 2024 19:47:14 +0800 Message-Id: <20240903114714.11428-3-zhaoqunqin@loongson.cn> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20240903114714.11428-1-zhaoqunqin@loongson.cn> References: <20240903114714.11428-1-zhaoqunqin@loongson.cn> Precedence: bulk X-Mailing-List: linux-edac@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-CM-TRANSID: qciowMAxvsUr99ZmONYEAA--.13062S4 X-CM-SenderInfo: 52kd01pxqtx0o6or00hjvr0hdfq/ X-Coremail-Antispam: 1Uk129KBj93XoW3ArWUXr18Kr45Jr1DJw15KFX_yoWxZFy5pr 13A3W3GrWftr13uws3ArWDuF1Yyw4Sva42kay3A3yjkr9xAryDZ34ktFy2yFnrCryDJrW3 X34rGw4UCF4UGrbCm3ZEXasCq-sJn29KB7ZKAUJUUUUJ529EdanIXcx71UUUUU7KY7ZEXa sCq-sGcSsGvfJ3Ic02F40EFcxC0VAKzVAqx4xG6I80ebIjqfuFe4nvWSU5nxnvy29KBjDU 0xBIdaVrnRJUUUBmb4IE77IF4wAFF20E14v26r1j6r4UM7CY07I20VC2zVCF04k26cxKx2 IYs7xG6rWj6s0DM7CIcVAFz4kK6r1Y6r17M28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48v e4kI8wA2z4x0Y4vE2Ix0cI8IcVAFwI0_Ar0_tr1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI 0_Cr0_Gr1UM28EF7xvwVC2z280aVAFwI0_Gr1j6F4UJwA2z4x0Y4vEx4A2jsIEc7CjxVAF wI0_Gr1j6F4UJwAaw2AFwI0_Jw0_GFyle2I262IYc4CY6c8Ij28IcVAaY2xG8wAqjxCEc2 xF0cIa020Ex4CE44I27wAqx4xG64xvF2IEw4CE5I8CrVC2j2WlYx0E2Ix0cI8IcVAFwI0_ Wrv_ZF1lYx0Ex4A2jsIE14v26F4j6r4UJwAm72CE4IkC6x0Yz7v_Jr0_Gr1lF7xvr2IYc2 Ij64vIr41lc7CjxVAaw2AFwI0_GFv_Wryl42xK82IYc2Ij64vIr41l4I8I3I0E4IkC6x0Y z7v_Jr0_Gr1l4IxYO2xFxVAFwI0_Jw0_GFylx2IqxVAqx4xG67AKxVWUJVWUGwC20s026x 8GjcxK67AKxVWUGVWUWwC2zVAF1VAY17CE14v26r1q6r43MIIYrxkI7VAKI48JMIIF0xvE 2Ix0cI8IcVAFwI0_Ar0_tr1lIxAIcVC0I7IYx2IY6xkF7I0E14v26F4j6r4UJwCI42IY6x AIw20EY4v20xvaj40_Jr0_JF4lIxAIcVC2z280aVAFwI0_Cr0_Gr1UMIIF0xvEx4A2jsIE c7CjxVAFwI0_Gr1j6F4UJbIYCTnIWIevJa73UjIFyTuYvjxUhGNtUUUUU Reports single bit errors (CE) only. Signed-off-by: Zhao Qunqin --- MAINTAINERS | 1 + arch/loongarch/Kconfig | 1 + drivers/edac/Kconfig | 8 ++ drivers/edac/Makefile | 1 + drivers/edac/loongson_edac.c | 182 +++++++++++++++++++++++++++++++++++ 5 files changed, 193 insertions(+) create mode 100644 drivers/edac/loongson_edac.c diff --git a/MAINTAINERS b/MAINTAINERS index 6cc8cfc8f..5b4526638 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -13242,6 +13242,7 @@ M: Zhao Qunqin L: linux-edac@vger.kernel.org S: Maintained F: Documentation/devicetree/bindings/edac/loongson,ls3a5000-mc-edac.yaml +F: drivers/edac/loongson_edac.c LSILOGIC MPT FUSION DRIVERS (FC/SAS/SPI) M: Sathya Prakash diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig index 70f169210..9c135f1a2 100644 --- a/arch/loongarch/Kconfig +++ b/arch/loongarch/Kconfig @@ -181,6 +181,7 @@ config LOONGARCH select PCI_MSI_ARCH_FALLBACKS select PCI_QUIRKS select PERF_USE_VMALLOC + select EDAC_SUPPORT select RTC_LIB select SPARSE_IRQ select SYSCTL_ARCH_UNALIGN_ALLOW diff --git a/drivers/edac/Kconfig b/drivers/edac/Kconfig index 16c8de505..1193e92f6 100644 --- a/drivers/edac/Kconfig +++ b/drivers/edac/Kconfig @@ -573,5 +573,13 @@ config EDAC_VERSAL Support injecting both correctable and uncorrectable errors for debugging purposes. +config EDAC_LOONGSON3 + tristate "Loongson-3 Memory Controller" + depends on LOONGARCH || COMPILE_TEST + help + Support for error detection and correction on the Loongson-3 + family memory controller. This driver reports single bit + errors (CE) only. Loongson-3A5000/3C5000/3D5000/3C5000L/3A6000/3C6000 + are compatible. endif # EDAC diff --git a/drivers/edac/Makefile b/drivers/edac/Makefile index 4edfb83ff..7d04ac43d 100644 --- a/drivers/edac/Makefile +++ b/drivers/edac/Makefile @@ -89,3 +89,4 @@ obj-$(CONFIG_EDAC_DMC520) += dmc520_edac.o obj-$(CONFIG_EDAC_NPCM) += npcm_edac.o obj-$(CONFIG_EDAC_ZYNQMP) += zynqmp_edac.o obj-$(CONFIG_EDAC_VERSAL) += versal_edac.o +obj-$(CONFIG_EDAC_LOONGSON3) += loongson_edac.o diff --git a/drivers/edac/loongson_edac.c b/drivers/edac/loongson_edac.c new file mode 100644 index 000000000..b89d6e0e7 --- /dev/null +++ b/drivers/edac/loongson_edac.c @@ -0,0 +1,182 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2024 Loongson Technology Corporation Limited. + */ + +#include +#include +#include +#include + +#include "edac_module.h" + +enum ecc_index { + ECC_SET = 0, + ECC_RESERVED, + ECC_COUNT, + ECC_CS_COUNT, + ECC_CODE, + ECC_ADDR, + ECC_DATA0, + ECC_DATA1, + ECC_DATA2, + ECC_DATA3, +}; + +struct loongson_edac_pvt { + u64 *ecc_base; + int last_ce_count; +}; + +static void loongson_update_ce_count(struct mem_ctl_info *mci, + int chan, + int new) +{ + int add; + struct loongson_edac_pvt *pvt = mci->pvt_info; + + add = new - pvt->last_ce_count; + + /* Store the new value */ + pvt->last_ce_count = new; + + /* device resume or any other exceptions*/ + if (add < 0) + return; + + /*updated the edac core */ + if (add != 0) { + edac_mc_handle_error(HW_EVENT_ERR_CORRECTED, mci, add, + 0, 0, 0, + chan, 0, -1, "error", ""); + edac_mc_printk(mci, KERN_INFO, "add: %d", add); + } +} + +static int loongson_read_ecc(struct mem_ctl_info *mci) +{ + u64 ecc; + int cs = 0; + struct loongson_edac_pvt *pvt = mci->pvt_info; + + if (!pvt->ecc_base) + return pvt->last_ce_count; + + ecc = pvt->ecc_base[ECC_CS_COUNT]; + cs += ecc & 0xff; // cs0 + cs += (ecc >> 8) & 0xff; // cs1 + cs += (ecc >> 16) & 0xff; // cs2 + cs += (ecc >> 24) & 0xff; // cs3 + + return cs; +} + +static void loongson_edac_check(struct mem_ctl_info *mci) +{ + loongson_update_ce_count(mci, 0, loongson_read_ecc(mci)); +} + +static int get_dimm_config(struct mem_ctl_info *mci) +{ + u32 size, npages; + struct dimm_info *dimm; + + /* size not used */ + size = -1; + npages = MiB_TO_PAGES(size); + + dimm = edac_get_dimm(mci, 0, 0, 0); + dimm->nr_pages = npages; + snprintf(dimm->label, sizeof(dimm->label), + "MC#%uChannel#%u_DIMM#%u", + mci->mc_idx, 0, 0); + dimm->grain = 8; + + return 0; +} + +static void loongson_pvt_init(struct mem_ctl_info *mci, u64 *vbase) +{ + struct loongson_edac_pvt *pvt = mci->pvt_info; + + pvt->ecc_base = vbase; + pvt->last_ce_count = loongson_read_ecc(mci); +} + +static int loongson_edac_probe(struct platform_device *pdev) +{ + struct mem_ctl_info *mci; + struct edac_mc_layer layers[2]; + struct loongson_edac_pvt *pvt; + u64 *vbase = NULL; + int ret; + + vbase = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(vbase)) + return PTR_ERR(vbase); + + /* allocate a new MC control structure */ + layers[0].type = EDAC_MC_LAYER_CHANNEL; + layers[0].size = 1; + layers[0].is_virt_csrow = false; + layers[1].type = EDAC_MC_LAYER_SLOT; + layers[1].size = 1; + layers[1].is_virt_csrow = true; + mci = edac_mc_alloc(0, ARRAY_SIZE(layers), layers, sizeof(*pvt)); + if (mci == NULL) + return -ENOMEM; + + mci->mc_idx = edac_device_alloc_index(); + mci->mtype_cap = MEM_FLAG_RDDR4; + mci->edac_ctl_cap = EDAC_FLAG_NONE; + mci->edac_cap = EDAC_FLAG_NONE; + mci->mod_name = "loongson_edac.c"; + mci->ctl_name = "loongson_edac_ctl"; + mci->dev_name = "loongson_edac_dev"; + mci->ctl_page_to_phys = NULL; + mci->pdev = &pdev->dev; + mci->error_desc.grain = 8; + /* Set the function pointer to an actual operation function */ + mci->edac_check = loongson_edac_check; + + loongson_pvt_init(mci, vbase); + get_dimm_config(mci); + + ret = edac_mc_add_mc(mci); + if (ret) { + edac_dbg(0, "MC: failed edac_mc_add_mc()\n"); + edac_mc_free(mci); + return ret; + } + edac_op_state = EDAC_OPSTATE_POLL; + + return 0; +} + +static void loongson_edac_remove(struct platform_device *pdev) +{ + struct mem_ctl_info *mci = edac_mc_del_mc(&pdev->dev); + + if (mci) + edac_mc_free(mci); +} + +static const struct of_device_id loongson_edac_of_match[] = { + { .compatible = "loongson,ls3a5000-mc-edac", }, + {} +}; +MODULE_DEVICE_TABLE(of, loongson_edac_of_match); + +static struct platform_driver loongson_edac_driver = { + .probe = loongson_edac_probe, + .remove = loongson_edac_remove, + .driver = { + .name = "loongson-mc-edac", + .of_match_table = loongson_edac_of_match, + }, +}; +module_platform_driver(loongson_edac_driver); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Zhao Qunqin "); +MODULE_DESCRIPTION("EDAC driver for loongson memory controller");