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=-10.1 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_HELO_NONE,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 49711C48BDB for ; Sun, 7 Jul 2019 11:58:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 13EC8206A3 for ; Sun, 7 Jul 2019 11:58:39 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=amazon.com header.i=@amazon.com header.b="CSUd//Ax" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726679AbfGGL6i (ORCPT ); Sun, 7 Jul 2019 07:58:38 -0400 Received: from smtp-fw-2101.amazon.com ([72.21.196.25]:13293 "EHLO smtp-fw-2101.amazon.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725981AbfGGL6i (ORCPT ); Sun, 7 Jul 2019 07:58:38 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazon201209; t=1562500716; x=1594036716; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=9LRlJaT4dXezi7EmuXIekZ0qpY4nRH6HUPbB+TX/bTY=; b=CSUd//AxzTjE9iEN6xvM26gwrWhpnlUpbrpR31Ezei5mC6z/bhwQKeJc sX572tx5a/Nuk07zuW68GvdyoXNjThERLppOH91TFWySIk9cBRFwTo7MC jMmGW8BlCWInh1x4CDucbkqUQ6+AqiDDomoT57lCxkK7Ii6xrezRWezla A=; X-IronPort-AV: E=Sophos;i="5.62,462,1554768000"; d="scan'208";a="740672455" Received: from iad6-co-svc-p1-lb1-vlan2.amazon.com (HELO email-inbound-relay-2a-119b4f96.us-west-2.amazon.com) ([10.124.125.2]) by smtp-border-fw-out-2101.iad2.amazon.com with ESMTP; 07 Jul 2019 11:58:34 +0000 Received: from EX13MTAUEA001.ant.amazon.com (pdx4-ws-svc-p6-lb7-vlan2.pdx.amazon.com [10.170.41.162]) by email-inbound-relay-2a-119b4f96.us-west-2.amazon.com (Postfix) with ESMTPS id 31C871A0AF9; Sun, 7 Jul 2019 11:58:33 +0000 (UTC) Received: from EX13D19EUB003.ant.amazon.com (10.43.166.69) by EX13MTAUEA001.ant.amazon.com (10.43.61.243) with Microsoft SMTP Server (TLS) id 15.0.1367.3; Sun, 7 Jul 2019 11:58:32 +0000 Received: from ub6d44c9ce3e25c.ant.amazon.com (10.43.161.16) by EX13D19EUB003.ant.amazon.com (10.43.166.69) with Microsoft SMTP Server (TLS) id 15.0.1367.3; Sun, 7 Jul 2019 11:58:23 +0000 From: Hanna Hawa To: , , , , , , , , , , CC: , , , , , , , , , Subject: [PATCH v2 2/4] edac: Add support for Amazon's Annapurna Labs L1 EDAC Date: Sun, 7 Jul 2019 14:57:36 +0300 Message-ID: <1562500658-14717-3-git-send-email-hhhawa@amazon.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1562500658-14717-1-git-send-email-hhhawa@amazon.com> References: <1562500658-14717-1-git-send-email-hhhawa@amazon.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.43.161.16] X-ClientProxiedBy: EX13D12UWC004.ant.amazon.com (10.43.162.182) To EX13D19EUB003.ant.amazon.com (10.43.166.69) Sender: linux-edac-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-edac@vger.kernel.org Adds support for Amazon's Annapurna Labs L1 EDAC driver to detect and report L1 errors. Signed-off-by: Hanna Hawa --- MAINTAINERS | 6 ++ drivers/edac/Kconfig | 8 +++ drivers/edac/Makefile | 1 + drivers/edac/al_l1_edac.c | 154 ++++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 169 insertions(+) create mode 100644 drivers/edac/al_l1_edac.c diff --git a/MAINTAINERS b/MAINTAINERS index 77eae44..fd29ea6 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -743,6 +743,12 @@ F: drivers/tty/serial/altera_jtaguart.c F: include/linux/altera_uart.h F: include/linux/altera_jtaguart.h +AMAZON ANNAPURNA LABS L1 EDAC +M: Hanna Hawa +S: Maintained +F: drivers/edac/al_l1_edac.c +F: Documentation/devicetree/bindings/edac/amazon,al-l1-edac.txt + AMAZON ANNAPURNA LABS THERMAL MMIO DRIVER M: Talel Shenhar S: Maintained diff --git a/drivers/edac/Kconfig b/drivers/edac/Kconfig index 200c04c..58b92bc 100644 --- a/drivers/edac/Kconfig +++ b/drivers/edac/Kconfig @@ -74,6 +74,14 @@ config EDAC_GHES In doubt, say 'Y'. +config EDAC_AL_L1 + bool "Amazon's Annapurna Labs L1 EDAC" + depends on ARCH_ALPINE + help + Support for L1 error detection and correction + for Amazon's Annapurna Labs SoCs. + This driver detects errors of L1 caches. + config EDAC_AMD64 tristate "AMD64 (Opteron, Athlon64)" depends on AMD_NB && EDAC_DECODE_MCE diff --git a/drivers/edac/Makefile b/drivers/edac/Makefile index 165ca65e..caa2dc9 100644 --- a/drivers/edac/Makefile +++ b/drivers/edac/Makefile @@ -22,6 +22,7 @@ obj-$(CONFIG_EDAC_GHES) += ghes_edac.o edac_mce_amd-y := mce_amd.o obj-$(CONFIG_EDAC_DECODE_MCE) += edac_mce_amd.o +obj-$(CONFIG_EDAC_AL_L1) += al_l1_edac.o obj-$(CONFIG_EDAC_AMD76X) += amd76x_edac.o obj-$(CONFIG_EDAC_CPC925) += cpc925_edac.o obj-$(CONFIG_EDAC_I5000) += i5000_edac.o diff --git a/drivers/edac/al_l1_edac.c b/drivers/edac/al_l1_edac.c new file mode 100644 index 0000000..f51a6c3 --- /dev/null +++ b/drivers/edac/al_l1_edac.c @@ -0,0 +1,154 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright 2019 Amazon.com, Inc. or its affiliates. All Rights Reserved. + */ + +#include + +#include "edac_device.h" +#include "edac_module.h" + +/* Same bit assignments of CPUMERRSR_EL1 in ARM CA57/CA72 */ +#define ARM_CA57_CPUMERRSR_EL1 sys_reg(3, 1, 15, 2, 2) +#define ARM_CA57_CPUMERRSR_RAM_ID GENMASK(30, 24) +#define ARM_CA57_L1_I_TAG_RAM 0x00 +#define ARM_CA57_L1_I_DATA_RAM 0x01 +#define ARM_CA57_L1_D_TAG_RAM 0x08 +#define ARM_CA57_L1_D_DATA_RAM 0x09 +#define ARM_CA57_L2_TLB_RAM 0x18 +#define ARM_CA57_CPUMERRSR_VALID GENMASK(31, 31) +#define ARM_CA57_CPUMERRSR_REPEAT GENMASK(39, 32) +#define ARM_CA57_CPUMERRSR_OTHER GENMASK(47, 40) +#define ARM_CA57_CPUMERRSR_FATAL GENMASK(63, 63) + +#define AL_L1_EDAC_MSG_MAX 256 + +static void al_l1_edac_cpumerrsr(void *arg) +{ + struct edac_device_ctl_info *edac_dev = arg; + int cpu, i; + u32 ramid, repeat, other, fatal; + u64 val = read_sysreg_s(ARM_CA57_CPUMERRSR_EL1); + char msg[AL_L1_EDAC_MSG_MAX]; + int space, count; + char *p; + + if (!(FIELD_GET(ARM_CA57_CPUMERRSR_VALID, val))) + return; + + cpu = smp_processor_id(); + ramid = FIELD_GET(ARM_CA57_CPUMERRSR_RAM_ID, val); + repeat = FIELD_GET(ARM_CA57_CPUMERRSR_REPEAT, val); + other = FIELD_GET(ARM_CA57_CPUMERRSR_OTHER, val); + fatal = FIELD_GET(ARM_CA57_CPUMERRSR_FATAL, val); + + space = sizeof(msg); + p = msg; + count = snprintf(p, space, "CPU%d L1 %serror detected", cpu, + (fatal) ? "Fatal " : ""); + p += count; + space -= count; + + switch (ramid) { + case ARM_CA57_L1_I_TAG_RAM: + count = snprintf(p, space, " RAMID='L1-I Tag RAM'"); + break; + case ARM_CA57_L1_I_DATA_RAM: + count = snprintf(p, space, " RAMID='L1-I Data RAM'"); + break; + case ARM_CA57_L1_D_TAG_RAM: + count = snprintf(p, space, " RAMID='L1-D Tag RAM'"); + break; + case ARM_CA57_L1_D_DATA_RAM: + count = snprintf(p, space, " RAMID='L1-D Data RAM'"); + break; + case ARM_CA57_L2_TLB_RAM: + count = snprintf(p, space, " RAMID='L2 TLB RAM'"); + break; + default: + count = snprintf(p, space, " RAMID='unknown'"); + break; + } + + p += count; + space -= count; + count = snprintf(p, space, + " repeat=%d, other=%d (CPUMERRSR_EL1=0x%llx)", + repeat, other, val); + + for (i = 0; i < repeat; i++) { + if (fatal) + edac_device_handle_ue(edac_dev, 0, 0, msg); + else + edac_device_handle_ce(edac_dev, 0, 0, msg); + } + + write_sysreg_s(0, ARM_CA57_CPUMERRSR_EL1); +} + +static void al_l1_edac_check(struct edac_device_ctl_info *edac_dev) +{ + on_each_cpu(al_l1_edac_cpumerrsr, edac_dev, 1); +} + +static int al_l1_edac_probe(struct platform_device *pdev) +{ + struct edac_device_ctl_info *edac_dev; + struct device *dev = &pdev->dev; + int ret; + + edac_dev = edac_device_alloc_ctl_info(0, (char *)dev_name(dev), 1, "L", + 1, 1, NULL, 0, + edac_device_alloc_index()); + if (IS_ERR(edac_dev)) + return -ENOMEM; + + edac_dev->edac_check = al_l1_edac_check; + edac_dev->dev = dev; + edac_dev->mod_name = dev_name(dev); + edac_dev->dev_name = dev_name(dev); + edac_dev->ctl_name = dev_name(dev); + platform_set_drvdata(pdev, edac_dev); + + ret = edac_device_add_device(edac_dev); + if (ret) { + dev_err(dev, "Failed to add L1 edac device\n"); + goto err; + } + + return 0; +err: + edac_device_free_ctl_info(edac_dev); + + return ret; +} + +static int al_l1_edac_remove(struct platform_device *pdev) +{ + struct edac_device_ctl_info *edac_dev = platform_get_drvdata(pdev); + + edac_device_del_device(edac_dev->dev); + edac_device_free_ctl_info(edac_dev); + + return 0; +} + +static const struct of_device_id al_l1_edac_of_match[] = { + { .compatible = "amazon,al-l1-edac" }, + {} +}; +MODULE_DEVICE_TABLE(of, al_l1_edac_of_match); + +static struct platform_driver al_l1_edac_driver = { + .probe = al_l1_edac_probe, + .remove = al_l1_edac_remove, + .driver = { + .name = "al_l1_edac", + .of_match_table = al_l1_edac_of_match, + }, +}; +module_platform_driver(al_l1_edac_driver); + +MODULE_LICENSE("GPL v2"); +MODULE_AUTHOR("Hanna Hawa "); +MODULE_DESCRIPTION("Amazon's Annapurna Lab's L1 EDAC Driver"); -- 2.7.4