From patchwork Wed Feb 24 15:57:56 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Viswas G X-Patchwork-Id: 12102085 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 5A8C4C433DB for ; Wed, 24 Feb 2021 16:10:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EDFF764EDD for ; Wed, 24 Feb 2021 16:10:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234363AbhBXQJu (ORCPT ); Wed, 24 Feb 2021 11:09:50 -0500 Received: from esa.microchip.iphmx.com ([68.232.153.233]:38001 "EHLO esa.microchip.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236635AbhBXPt5 (ORCPT ); Wed, 24 Feb 2021 10:49:57 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1614181791; x=1645717791; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=nI5/bg6No1F8JoRKUbYwabAkQJqZx4lwIVciE3yr8Zw=; b=UQ4mtdpTdn5caoyCXtKLi2J4fi9DzzUS5AZzd7IiiEBRMTPe3SOM4V7h nhMeYNDh2KkNc810vMHaLNpW0Pcm19zcZpU0r2xQFeudzzKUEeodaCfaH fAsFoi5E7VDexar9p/nTbVNtdC+3bWQJahj3VZ3W7WsZ1QF3D91oewTTS T+pxkzB8EiPmFcndCe2NzYbEq5tVV9rDIOTYAiW8GsjOOpEY/P8mY74nv K6hIkNdOtWbAMirm4yRQZwLbmaG1O1JdeIxfigyDPwxdTmKfphnYTsFp9 UKIL/LEeHjX+ioc3jGxJ9Z+SstX/K1e58+7HHSyxMeApmuldETZ1VK2wQ w==; IronPort-SDR: wDWqeJ8zwX4ieTd/d/GsWfsykfdy7mU/3E8l4Km30UsDNT2OZXrXphVtQrA31sFT/VpLBHYII5 Aw2WJTptmHWj3ehzMeDWUgr4nXuEvLC5gVwouUbNAe3+vG0nLByHwY+0T/mZh4FsPES5pAiZQL gtFK5AMIhzl25jC990zlSLwQdkIdEUUaUSi2X3OnXY/wGZV+IFtU6N1eSyVbRXK3HgXtAtZsmL RxbQ2yqZ8Gr7UNIOTc6hVdLckQa0H5oneI/msfnZey/fClcv03Tx9yA5z9wOTv9gtQeSio7BKR b1s= X-IronPort-AV: E=Sophos;i="5.81,203,1610434800"; d="scan'208";a="116451446" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa1.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 24 Feb 2021 08:48:18 -0700 Received: from chn-vm-ex03.mchp-main.com (10.10.85.151) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1979.3; Wed, 24 Feb 2021 08:48:18 -0700 Received: from localhost (10.10.115.15) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server id 15.1.1979.3 via Frontend Transport; Wed, 24 Feb 2021 08:48:18 -0700 From: Viswas G To: CC: , , , , , Subject: [PATCH 1/7] pm80xx: Add sysfs attribute to check mpi state Date: Wed, 24 Feb 2021 21:27:56 +0530 Message-ID: <20210224155802.13292-2-Viswas.G@microchip.com> X-Mailer: git-send-email 2.16.3 In-Reply-To: <20210224155802.13292-1-Viswas.G@microchip.com> References: <20210224155802.13292-1-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 mvae14:~# cat /sys/class/scsi_host/host*/ctl_mpi_state MPI-S=MPI is successfully initialized HMI_ERR=0 MPI-S=MPI is successfully initialized HMI_ERR=0 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 --- drivers/scsi/pm8001/pm8001_ctl.c | 36 +++++++++++++++++++++++++++++++++++- 1 file changed, 35 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/pm8001/pm8001_ctl.c b/drivers/scsi/pm8001/pm8001_ctl.c index 12035baf0997..035969ed1c2e 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 +884,41 @@ 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. + */ + +char mpiStateText[][80] = { + "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 = 0; + int c; + + pm8001_dbg(pm8001_ha, IOCTL, "%s\n", __func__); + mpidw0 = pm8001_mr32(pm8001_ha->general_stat_tbl_addr, 0); + c = sprintf(buf, "MPI-S=%s\t HMI_ERR=%x\n", mpiStateText[mpidw0 & 0x0003], + ((mpidw0 & 0xff00) >> 16)); + return c; +} +static DEVICE_ATTR_RO(ctl_mpi_state); + struct device_attribute *pm8001_host_attrs[] = { &dev_attr_interface_rev, &dev_attr_controller_fatal_error, @@ -909,6 +942,7 @@ 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, };