From patchwork Thu Apr 15 10:33:45 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Viswas G X-Patchwork-Id: 422126 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 1ABCAC43460 for ; Thu, 15 Apr 2021 10:24:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EE3F5613B1 for ; Thu, 15 Apr 2021 10:24:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232332AbhDOKYp (ORCPT ); Thu, 15 Apr 2021 06:24:45 -0400 Received: from esa.microchip.iphmx.com ([68.232.153.233]:23250 "EHLO esa.microchip.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232303AbhDOKYn (ORCPT ); Thu, 15 Apr 2021 06:24:43 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1618482261; x=1650018261; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=1GJZzpKh7w6xcmwIOg6j3mF4rwt9tZpvPhZq7jvgvwo=; b=MCsuPpbDrWHDdnI5Xjt7ZvCdQ5vHnF3mFRQKUPKq9qpvE6oNOKMJKmsB 0ePcPbNIBhpV6kLZRXLJe8YLDghWOYUxh5KV+Z0+NTjsHHLTvCUdKitKw O3g4luIl8y5CLGWIVh8KmQviejLSr10J7w/Xg39S3rN2wgDusV7YVvYxq /9NXYeLyBfGHcjp4h1A//wGv4JM/LUepXwopo0KeHk5N7uiL+tFUDAqNn LZ5CCvPnAHpWrXz2j1UbXCHllXdWD6zFPXBJ9JHnf3YdbEG1wNOrj5n70 g9znjXe/eueTw9gCV1g8dGYQfI80bhwZizqAYvtR2GudE/+mPNwIo+Tdg Q==; IronPort-SDR: QHePRvJqqFzXpANxNFWnDpxPu9oHoMzE7tiI6oWrBIsqJ8RZTg1mj2llENMbrC9XwB5XmzVdB4 UYMgVq0folJG1tY933S3MTWrgiethf+ddbh1p7weeRz8C0biFtnZfw3OCE8EHNsb4oAb7HzXWK TqWvJKWYB0ZBQ7gkgaS5Arnm8KXBXndFUi0j62CepuP9pOX2zZcWwruMl5GA1+YzIAu0od50t/ 23G5KQMChmiAfcd+KIywGJ33/wM3TaK/Sku1mKLizMOBe6NvkazvHfzoJU0+KbKb6tLQ7K0ywA 0FM= X-IronPort-AV: E=Sophos;i="5.82,223,1613458800"; d="scan'208";a="116548099" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa5.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 15 Apr 2021 03:24:21 -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 03:24:20 -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 03:24:20 -0700 From: Viswas G To: CC: , , , , , , Ashokkumar N , "John Garry" , Dan Carpenter , "Martin K . Petersen" , Bart Van Assche Subject: [PATCH v4 1/8] pm80xx: Add sysfs attribute to check mpi state Date: Thu, 15 Apr 2021 16:03:45 +0530 Message-ID: <20210415103352.3580-2-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_mpi_state' is being introduced to check the state of mpi. Tested: Using 'ctl_mpi_state' sysfs variable we check the mpi state linux-2dq0:~# cat /sys/class/scsi_host/host*/ctl_mpi_state MPI is successfully initialized Reported-by: kernel test robot Reported-by: Dan Carpenter Signed-off-by: Vishakha Channapattan Signed-off-by: Viswas G Signed-off-by: Ruksar Devadi Signed-off-by: Ashokkumar N Signed-off-by: Radha Ramachandran Signed-off-by: kernel test robot --- drivers/scsi/pm8001/pm8001_ctl.c | 32 +++++++++++++++++++++++++++++++- 1 file changed, 31 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/pm8001/pm8001_ctl.c b/drivers/scsi/pm8001/pm8001_ctl.c index 12035baf0997..a93799bd3a32 100644 --- a/drivers/scsi/pm8001/pm8001_ctl.c +++ b/drivers/scsi/pm8001/pm8001_ctl.c @@ -41,6 +41,7 @@ #include #include "pm8001_sas.h" #include "pm8001_ctl.h" +#include "pm8001_chips.h" /* scsi host attributes */ @@ -883,9 +884,37 @@ static ssize_t pm8001_show_update_fw(struct device *cdev, flash_error_table[i].err_code, flash_error_table[i].reason); } - static DEVICE_ATTR(update_fw, S_IRUGO|S_IWUSR|S_IWGRP, pm8001_show_update_fw, pm8001_store_update_fw); + +/** + * ctl_mpi_state_show - controller MPI state check + * @cdev: pointer to embedded class device + * @buf: the buffer returned + * + * A sysfs 'read-only' shost attribute. + */ + +static const char *const mpiStateText[] = { + "MPI is not initialized", + "MPI is successfully initialized", + "MPI termination is in progress", + "MPI initialization failed with error in [31:16]" +}; + +static ssize_t ctl_mpi_state_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, "%s\n", mpiStateText[mpidw0 & 0x0003]); +} +static DEVICE_ATTR_RO(ctl_mpi_state); + struct device_attribute *pm8001_host_attrs[] = { &dev_attr_interface_rev, &dev_attr_controller_fatal_error, @@ -909,6 +938,7 @@ struct device_attribute *pm8001_host_attrs[] = { &dev_attr_ob_log, &dev_attr_ila_version, &dev_attr_inc_fw_ver, + &dev_attr_ctl_mpi_state, NULL, };