From patchwork Wed Sep 15 06:04:07 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Avri Altman X-Patchwork-Id: 513454 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=-16.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED, 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 ACCC7C4332F for ; Wed, 15 Sep 2021 06:04:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8C9786113E for ; Wed, 15 Sep 2021 06:04:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236294AbhIOGFu (ORCPT ); Wed, 15 Sep 2021 02:05:50 -0400 Received: from esa3.hgst.iphmx.com ([216.71.153.141]:28442 "EHLO esa3.hgst.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236377AbhIOGFt (ORCPT ); Wed, 15 Sep 2021 02:05:49 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=wdc.com; i=@wdc.com; q=dns/txt; s=dkim.wdc.com; t=1631685870; x=1663221870; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=3ryheFD8WMYGXqB3SQZsHh9i8atB7PV0ql6LV51neAI=; b=cZGh3kvq9trh1aJzX3mRGvTdwsi9RyIQTPEykNzokKCy/MOkcUHnaz0d mcEPcCcRsSQRKtVr6tB0OO9B7zmEWPwnNxMZSAukANolFLdxeNKPKKKqL Ht/oxO2Qlor7kHueti56GYqlDGy+/n42gJGitYjZa7HSGD6CWD8ThQMaH x7HeFdbsZHHn+ALv2eGsQf3OpHJBjW++gEZGiAmdIk+IB4J5K+E7HOhEC SkSvFTrVUVwgdNoEndk483aMBXDeihCc+SPgxRaTRZQ/VKKhjbkmJ7U/h 6kn8ZCvm1wX8HfDQqZAHvO04N7A9a60n/cdKXce7ogaDJb2WL6iUX5euB Q==; X-IronPort-AV: E=Sophos;i="5.85,294,1624291200"; d="scan'208";a="184828931" Received: from h199-255-45-14.hgst.com (HELO uls-op-cesaep01.wdc.com) ([199.255.45.14]) by ob1.hgst.iphmx.com with ESMTP; 15 Sep 2021 14:04:30 +0800 IronPort-SDR: ICUVpuiofCjTTjRPY4804mexlyWAGWDB7rK61tNHdG1Ygj0nmKwW14mRjr/SWNlmcYqZkl6FJQ 1cmj00LVQNMkSIkzWiX4k1U0ZtCHZJW080aa9hvoer07ZlG1P1CSg/XLOvi0v0+uYKEua84bW/ +1k1HpYdu616SHpMPtQjt5sxM9exoLcuQoeKp60HoIKGrW2HFt6UJFuHOXAXppwPpi2y+I0ULa 97PdniAI9RZq/zAbqFVItJE6MfiqvHmK1VTGIwJ5KbcOGlz6JOKlsF1ZMmGBahByjTZEFDtnyS YjItlbQ4NYPk+OyE7Tfa0dJK Received: from uls-op-cesaip02.wdc.com ([10.248.3.37]) by uls-op-cesaep01.wdc.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Sep 2021 22:40:54 -0700 IronPort-SDR: CL+LRpxFApAQWu19BKH/sXv8rUNXHaK2SLUWRqrvpa1unfASF/U24ZGWL8HJAHBW6ssP3QvSxF 56qi+eWsmVZuJCOjvK1OMD0tfL+fEDwZM2dlGFfcotmwM+aKSxTEJM49THbCZHZ0G/bGmkKFTi kjZ46XYYMAEVvKrJ+R5776K1cz4YKgNjm8Q1U7y7tUH5hnOjZWyWHcCeh/KheIy90gFqsTzCRd cfbWvsyJJg0Dcad0cVyS7aRI/tbyFX+KoJqsvXt0d6AIlT5WxGPvr0BB9j52ocMxrlMfxg9hQl nlU= WDCIronportException: Internal Received: from bxygm33.ad.shared ([10.225.32.116]) by uls-op-cesaip02.wdc.com with ESMTP; 14 Sep 2021 23:04:28 -0700 From: Avri Altman To: "James E . J . Bottomley" , "Martin K . Petersen" Cc: linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, Bart Van Assche , Adrian Hunter , Bean Huo , Guenter Roeck , Avri Altman Subject: [PATCH v7 2/2] scsi: ufs: Add temperature notification exception handling Date: Wed, 15 Sep 2021 09:04:07 +0300 Message-Id: <20210915060407.40-3-avri.altman@wdc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210915060407.40-1-avri.altman@wdc.com> References: <20210915060407.40-1-avri.altman@wdc.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org The device may notify the host of an extreme temperature by using the exception event mechanism. The exception can be raised when the device’s Tcase temperature is either too high or too low. It is essentially up to the platform to decide what further actions need to be taken. leave a placeholder for a designated vop for that. Signed-off-by: Avri Altman --- drivers/scsi/ufs/ufs-hwmon.c | 12 ++++++++++++ drivers/scsi/ufs/ufshcd.c | 21 +++++++++++++++++++++ drivers/scsi/ufs/ufshcd.h | 2 ++ 3 files changed, 35 insertions(+) diff --git a/drivers/scsi/ufs/ufs-hwmon.c b/drivers/scsi/ufs/ufs-hwmon.c index 33b66736aaa4..74855491dc8f 100644 --- a/drivers/scsi/ufs/ufs-hwmon.c +++ b/drivers/scsi/ufs/ufs-hwmon.c @@ -196,3 +196,15 @@ void ufs_hwmon_remove(struct ufs_hba *hba) hba->hwmon_device = NULL; kfree(data); } + +void ufs_hwmon_notify_event(struct ufs_hba *hba, u8 ee_mask) +{ + if (!hba->hwmon_device) + return; + + if (ee_mask & MASK_EE_TOO_HIGH_TEMP) + hwmon_notify_event(hba->hwmon_device, hwmon_temp, hwmon_temp_max_alarm, 0); + + if (ee_mask & MASK_EE_TOO_LOW_TEMP) + hwmon_notify_event(hba->hwmon_device, hwmon_temp, hwmon_temp_min_alarm, 0); +} diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index ce22340024ce..debef631c89a 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -5642,6 +5642,24 @@ static void ufshcd_bkops_exception_event_handler(struct ufs_hba *hba) __func__, err); } +static void ufshcd_temp_exception_event_handler(struct ufs_hba *hba, u16 status) +{ + u32 value; + + if (ufshcd_query_attr_retry(hba, UPIU_QUERY_OPCODE_READ_ATTR, + QUERY_ATTR_IDN_CASE_ROUGH_TEMP, 0, 0, &value)) + return; + + dev_info(hba->dev, "exception Tcase %d\n", value - 80); + + ufs_hwmon_notify_event(hba, status & MASK_EE_URGENT_TEMP); + + /* + * A placeholder for the platform vendors to add whatever additional + * steps required + */ +} + static int __ufshcd_wb_toggle(struct ufs_hba *hba, bool set, enum flag_idn idn) { u8 index; @@ -5821,6 +5839,9 @@ static void ufshcd_exception_event_handler(struct work_struct *work) if (status & hba->ee_drv_mask & MASK_EE_URGENT_BKOPS) ufshcd_bkops_exception_event_handler(hba); + if (status & hba->ee_drv_mask & MASK_EE_URGENT_TEMP) + ufshcd_temp_exception_event_handler(hba, status); + ufs_debugfs_exception_event(hba, status); out: ufshcd_scsi_unblock_requests(hba); diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h index 021c858955af..92d05329de68 100644 --- a/drivers/scsi/ufs/ufshcd.h +++ b/drivers/scsi/ufs/ufshcd.h @@ -1062,9 +1062,11 @@ static inline u8 ufshcd_wb_get_query_index(struct ufs_hba *hba) #ifdef CONFIG_SCSI_UFS_HWMON void ufs_hwmon_probe(struct ufs_hba *hba, u8 mask); void ufs_hwmon_remove(struct ufs_hba *hba); +void ufs_hwmon_notify_event(struct ufs_hba *hba, u8 ee_mask); #else static inline void ufs_hwmon_probe(struct ufs_hba *hba, u8 mask) {} static inline void ufs_hwmon_remove(struct ufs_hba *hba) {} +static inline void ufs_hwmon_notify_event(struct ufs_hba *hba, u8 ee_mask) {} #endif #ifdef CONFIG_PM