From patchwork Wed Dec 16 13:38:18 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Adrian Hunter X-Patchwork-Id: 344742 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, 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 62855C4361B for ; Wed, 16 Dec 2020 13:39:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 161262311B for ; Wed, 16 Dec 2020 13:39:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726246AbgLPNjX (ORCPT ); Wed, 16 Dec 2020 08:39:23 -0500 Received: from mga11.intel.com ([192.55.52.93]:64491 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726125AbgLPNjX (ORCPT ); Wed, 16 Dec 2020 08:39:23 -0500 IronPort-SDR: M1HedeNKR70YPFI3PUV3/PSyB9RkHTe4Ww/6TaTVc9Key1DKxtH6wCIv+m41nytkyBbhM6s9n2 h/zHNcdt/u6g== X-IronPort-AV: E=McAfee;i="6000,8403,9836"; a="171550069" X-IronPort-AV: E=Sophos;i="5.78,424,1599548400"; d="scan'208";a="171550069" Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Dec 2020 05:38:31 -0800 IronPort-SDR: F8EDWRhTrUaOTqRTA/g6WVx5UWybrGd2cqV3eiM+3vP3sy9lYz0AQN+zHil+Zn9LQgRIfMqtSw pjA6Zcn2qBnA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.78,424,1599548400"; d="scan'208";a="386454151" Received: from ahunter-desktop.fi.intel.com ([10.237.72.94]) by fmsmga002.fm.intel.com with ESMTP; 16 Dec 2020 05:38:26 -0800 From: Adrian Hunter To: "Martin K . Petersen" , "James E . J . Bottomley" Cc: linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, Alim Akhtar , Avri Altman , Bean Huo , Can Guo , Stanley Chu Subject: [PATCH] scsi: ufs-debugfs: Add error counters Date: Wed, 16 Dec 2020 15:38:18 +0200 Message-Id: <20201216133818.25935-1-adrian.hunter@intel.com> X-Mailer: git-send-email 2.17.1 Organization: Intel Finland Oy, Registered Address: PL 281, 00181 Helsinki, Business Identity Code: 0357606 - 4, Domiciled in Helsinki Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org People testing have a need to know how many errors might be occurring over time. Add error counters and expose them via debugfs. Signed-off-by: Adrian Hunter Reported-by: kernel test robot --- drivers/scsi/ufs/Makefile | 1 + drivers/scsi/ufs/ufs-debugfs.c | 55 ++++++++++++++++++++++++++++++++++ drivers/scsi/ufs/ufs-debugfs.h | 22 ++++++++++++++ drivers/scsi/ufs/ufshcd.c | 19 ++++++++++++ drivers/scsi/ufs/ufshcd.h | 5 ++++ 5 files changed, 102 insertions(+) create mode 100644 drivers/scsi/ufs/ufs-debugfs.c create mode 100644 drivers/scsi/ufs/ufs-debugfs.h diff --git a/drivers/scsi/ufs/Makefile b/drivers/scsi/ufs/Makefile index 4679af1b564e..9ca32b1143cb 100644 --- a/drivers/scsi/ufs/Makefile +++ b/drivers/scsi/ufs/Makefile @@ -9,6 +9,7 @@ ufs_qcom-$(CONFIG_SCSI_UFS_CRYPTO) += ufs-qcom-ice.o obj-$(CONFIG_SCSI_UFS_EXYNOS) += ufs-exynos.o obj-$(CONFIG_SCSI_UFSHCD) += ufshcd-core.o ufshcd-core-y += ufshcd.o ufs-sysfs.o +ufshcd-core-$(CONFIG_DEBUG_FS) += ufs-debugfs.o ufshcd-core-$(CONFIG_SCSI_UFS_BSG) += ufs_bsg.o ufshcd-core-$(CONFIG_SCSI_UFS_CRYPTO) += ufshcd-crypto.o obj-$(CONFIG_SCSI_UFSHCD_PCI) += ufshcd-pci.o diff --git a/drivers/scsi/ufs/ufs-debugfs.c b/drivers/scsi/ufs/ufs-debugfs.c new file mode 100644 index 000000000000..cb765e2d6c21 --- /dev/null +++ b/drivers/scsi/ufs/ufs-debugfs.c @@ -0,0 +1,55 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (C) 2020 Intel Corporation + +#include + +#include "ufshcd.h" + +static struct dentry *ufs_debugfs_root; + +void ufs_debugfs_init(void) +{ + ufs_debugfs_root = debugfs_create_dir("ufshcd", NULL); +} + +void ufs_debugfs_exit(void) +{ + debugfs_remove_recursive(ufs_debugfs_root); +} + +static int ufs_debugfs_stats_show(struct seq_file *s, void *data) +{ + struct ufs_hba *hba = s->private; + struct ufs_event_hist *e = hba->ufs_stats.event; + +#define PRT(fmt, typ) \ + seq_printf(s, fmt, e[UFS_EVT_ ## typ].cnt) + + PRT("PHY Adapter Layer errors (except LINERESET): %llu\n", PA_ERR); + PRT("Data Link Layer errors: %llu\n", DL_ERR); + PRT("Network Layer errors: %llu\n", NL_ERR); + PRT("Transport Layer errors: %llu\n", TL_ERR); + PRT("Generic DME errors: %llu\n", DME_ERR); + PRT("Auto-hibernate errors: %llu\n", AUTO_HIBERN8_ERR); + PRT("IS Fatal errors (CEFES, SBFES, HCFES, DFES): %llu\n", FATAL_ERR); + PRT("DME Link Startup errors: %llu\n", LINK_STARTUP_FAIL); + PRT("PM Resume errors: %llu\n", RESUME_ERR); + PRT("PM Suspend errors : %llu\n", SUSPEND_ERR); + PRT("Logical Unit Resets: %llu\n", DEV_RESET); + PRT("Host Resets: %llu\n", HOST_RESET); + PRT("SCSI command aborts: %llu\n", ABORT); +#undef PRT + return 0; +} +DEFINE_SHOW_ATTRIBUTE(ufs_debugfs_stats); + +void ufs_debugfs_hba_init(struct ufs_hba *hba) +{ + hba->debugfs_root = debugfs_create_dir(dev_name(hba->dev), ufs_debugfs_root); + debugfs_create_file("stats", 0400, hba->debugfs_root, hba, &ufs_debugfs_stats_fops); +} + +void ufs_debugfs_hba_exit(struct ufs_hba *hba) +{ + debugfs_remove_recursive(hba->debugfs_root); +} diff --git a/drivers/scsi/ufs/ufs-debugfs.h b/drivers/scsi/ufs/ufs-debugfs.h new file mode 100644 index 000000000000..d5e744c7bd2d --- /dev/null +++ b/drivers/scsi/ufs/ufs-debugfs.h @@ -0,0 +1,22 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright (C) 2020 Intel Corporation + */ + +#ifndef __UFS_DEBUGFS_H__ +#define __UFS_DEBUGFS_H__ + +struct ufs_hba; + +#ifdef CONFIG_DEBUG_FS +void ufs_debugfs_init(void); +void ufs_debugfs_exit(void); +void ufs_debugfs_hba_init(struct ufs_hba *hba); +void ufs_debugfs_hba_exit(struct ufs_hba *hba); +#else +static inline void ufs_debugfs_init(void) {} +static inline void ufs_debugfs_exit(void) {} +static inline void ufs_debugfs_hba_init(struct ufs_hba *hba) {} +static inline void ufs_debugfs_hba_exit(struct ufs_hba *hba) {} +#endif + +#endif diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 82ad31781bc9..d8a3cf0cd6d5 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -20,6 +20,7 @@ #include "ufs_quirks.h" #include "unipro.h" #include "ufs-sysfs.h" +#include "ufs-debugfs.h" #include "ufs_bsg.h" #include "ufshcd-crypto.h" #include @@ -4540,6 +4541,7 @@ void ufshcd_update_evt_hist(struct ufs_hba *hba, u32 id, u32 val) e = &hba->ufs_stats.event[id]; e->val[e->pos] = val; e->tstamp[e->pos] = ktime_get(); + e->cnt += 1; e->pos = (e->pos + 1) % UFS_EVENT_HIST_LENGTH; ufshcd_vops_event_notify(hba, id, &val); @@ -8334,6 +8336,8 @@ static int ufshcd_hba_init(struct ufs_hba *hba) if (err) goto out_disable_vreg; + ufs_debugfs_hba_init(hba); + hba->is_powered = true; goto out; @@ -8350,6 +8354,7 @@ static int ufshcd_hba_init(struct ufs_hba *hba) static void ufshcd_hba_exit(struct ufs_hba *hba) { if (hba->is_powered) { + ufs_debugfs_hba_exit(hba); ufshcd_variant_hba_exit(hba); ufshcd_setup_vreg(hba, false); ufshcd_suspend_clkscaling(hba); @@ -9436,6 +9441,20 @@ int ufshcd_init(struct ufs_hba *hba, void __iomem *mmio_base, unsigned int irq) } EXPORT_SYMBOL_GPL(ufshcd_init); +static int __init ufshcd_core_init(void) +{ + ufs_debugfs_init(); + return 0; +} + +static void __exit ufshcd_core_exit(void) +{ + ufs_debugfs_exit(); +} + +module_init(ufshcd_core_init); +module_exit(ufshcd_core_exit); + MODULE_AUTHOR("Santosh Yaragnavi "); MODULE_AUTHOR("Vinayak Holikatti "); MODULE_DESCRIPTION("Generic UFS host controller driver Core"); diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h index aa9ea3552323..8c51ce01517e 100644 --- a/drivers/scsi/ufs/ufshcd.h +++ b/drivers/scsi/ufs/ufshcd.h @@ -445,11 +445,13 @@ struct ufs_clk_scaling { * @pos: index to indicate cyclic buffer position * @reg: cyclic buffer for registers value * @tstamp: cyclic buffer for time stamp + * @cnt: error counter */ struct ufs_event_hist { int pos; u32 val[UFS_EVENT_HIST_LENGTH]; ktime_t tstamp[UFS_EVENT_HIST_LENGTH]; + unsigned long long cnt; }; /** @@ -817,6 +819,9 @@ struct ufs_hba { u32 crypto_cfg_register; struct blk_keyslot_manager ksm; #endif +#ifdef CONFIG_DEBUG_FS + struct dentry *debugfs_root; +#endif }; /* Returns true if clocks can be gated. Otherwise false */