From patchwork Thu Apr 15 10:33:46 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Viswas G X-Patchwork-Id: 423063 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=-16.6 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 11D50C43460 for ; Thu, 15 Apr 2021 10:24:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E3519613B1 for ; Thu, 15 Apr 2021 10:24:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232362AbhDOKYr (ORCPT ); Thu, 15 Apr 2021 06:24:47 -0400 Received: from esa.microchip.iphmx.com ([68.232.153.233]:35455 "EHLO esa.microchip.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232315AbhDOKYq (ORCPT ); Thu, 15 Apr 2021 06:24:46 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1618482263; x=1650018263; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=cOEw6hwvqZLDddzkN4vF8KBDSW5RRYekt8cbWZTJfeE=; b=BYD3oEDpLc2hzI/K4CbsMwZ+iy6vFYWNZ4XeK+vsdqY9m7tAAREXGD6l Wk9qsNPNgrX6OubBKBFBPBYiVki38+GkE2Pj482FeZCGTPXk/QWtO+The TmX9/ywZYCl+NZd8WjnH/NtaW9qR//7HYzmVL0K5KwwdXzD3DpKsTzI6L ABfcCIALWfto07PWumfdm6P03NkPAp6xdZO61JUI/jtj6A77lpbLhDdQj mq4eT/F3tM92RGZYOSgIjHNoRebd3G5sfZ/J3MBQjCMQpHu96+6h9Z6Kb 26lZDIRknlenhpi/nILGNuAfzKi+jVccMHrsT3bgri352d2/VICDBTEFh A==; IronPort-SDR: DxRviuQq17iDZ67lac8721TkD9lwAdPqQLO4wqQJ6J6JO7MtFQC0mT672BK5mze26y4pFzPx2w omQQZ60pX3M5D6e4yaPQ//P6PIQ8VQw3ewC30bvhdWEai02ntpulQDoicbTgUwozzB/kLfHjwQ 7kKVO58+0PzO9HHJbBFPB+qTvDdP9TOZk9f/09qdv3o7ZInycyU95LjDijoS4kabsSLeJ5/Bdl Fsif1ZCRFNJrA2VKkAniDOt7x4/qOvcsW7iH5fE6/unWM9pD2jhbQy4NUmq0WC8tXHwW47Rvrp iJE= X-IronPort-AV: E=Sophos;i="5.82,223,1613458800"; d="scan'208";a="123165425" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa1.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 15 Apr 2021 03:24:22 -0700 Received: from chn-vm-ex04.mchp-main.com (10.10.85.152) by chn-vm-ex01.mchp-main.com (10.10.85.143) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Thu, 15 Apr 2021 03:24:22 -0700 Received: from localhost (10.10.115.15) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server id 15.1.2176.2 via Frontend Transport; Thu, 15 Apr 2021 03:24:22 -0700 From: Viswas G To: CC: , , , , , , Ashokkumar N , "John Garry" , Dan Carpenter , "Martin K . Petersen" , Bart Van Assche Subject: [PATCH v4 2/8] pm80xx: Add sysfs attribute to check controller hmi error Date: Thu, 15 Apr 2021 16:03:46 +0530 Message-ID: <20210415103352.3580-3-Viswas.G@microchip.com> X-Mailer: git-send-email 2.16.3 In-Reply-To: <20210415103352.3580-1-Viswas.G@microchip.com> References: <20210415103352.3580-1-Viswas.G@microchip.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org From: Vishakha Channapattan A new sysfs variable 'ctl_hmi_error' is being introduced to give the error details if the MPI initialization fails Tested: Using 'ctl_hmi_error' sysfs variable we check the error details linux-2dq0:~# cat /sys/class/scsi_host/host*/ctl_hmi_error 0x00000000 0x00000000 0x00000000 Signed-off-by: Vishakha Channapattan Signed-off-by: Viswas G Signed-off-by: Ruksar Devadi --- drivers/scsi/pm8001/pm8001_ctl.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/drivers/scsi/pm8001/pm8001_ctl.c b/drivers/scsi/pm8001/pm8001_ctl.c index a93799bd3a32..b1f105253a12 100644 --- a/drivers/scsi/pm8001/pm8001_ctl.c +++ b/drivers/scsi/pm8001/pm8001_ctl.c @@ -915,6 +915,27 @@ static ssize_t ctl_mpi_state_show(struct device *cdev, } static DEVICE_ATTR_RO(ctl_mpi_state); +/** + * ctl_hmi_error_show - controller MPI initialization fails + * @cdev: pointer to embedded class device + * @buf: the buffer returned + * + * A sysfs 'read-only' shost attribute. + */ + +static ssize_t ctl_hmi_error_show(struct device *cdev, + struct device_attribute *attr, char *buf) +{ + struct Scsi_Host *shost = class_to_shost(cdev); + struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost); + struct pm8001_hba_info *pm8001_ha = sha->lldd_ha; + unsigned int mpidw0; + + mpidw0 = pm8001_mr32(pm8001_ha->general_stat_tbl_addr, 0); + return sysfs_emit(buf, "0x%08x\n", (mpidw0 >> 16)); +} +static DEVICE_ATTR_RO(ctl_hmi_error); + struct device_attribute *pm8001_host_attrs[] = { &dev_attr_interface_rev, &dev_attr_controller_fatal_error, @@ -939,6 +960,7 @@ struct device_attribute *pm8001_host_attrs[] = { &dev_attr_ila_version, &dev_attr_inc_fw_ver, &dev_attr_ctl_mpi_state, + &dev_attr_ctl_hmi_error, NULL, };