From patchwork Thu Aug 30 03:26:31 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Suganath Prabu S X-Patchwork-Id: 10581181 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2C9F75A4 for ; Thu, 30 Aug 2018 03:27:16 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1DD232BCE4 for ; Thu, 30 Aug 2018 03:27:16 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 123342BCE6; Thu, 30 Aug 2018 03:27:16 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A50EF2BCE4 for ; Thu, 30 Aug 2018 03:27:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727507AbeH3H1P (ORCPT ); Thu, 30 Aug 2018 03:27:15 -0400 Received: from mail-qt0-f196.google.com ([209.85.216.196]:38759 "EHLO mail-qt0-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727281AbeH3H1P (ORCPT ); Thu, 30 Aug 2018 03:27:15 -0400 Received: by mail-qt0-f196.google.com with SMTP id x7-v6so8301234qtk.5 for ; Wed, 29 Aug 2018 20:27:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=bx2mMoM9mJWCNDw4nD8Qjv9n9w+y6A5e1Wcu1/6t4ew=; b=JuUya5hF9UJiHaboDylyei6Lfy0ss48AtV0tux0jfCD2FV919vuqfMm66g3BeGU37d sECMHYiHA/Eo6bFQIjRlYj2QpCgZYPoGEdwh4PsLXoQ7xeajUiU72Pl5Gq8okwdRjzKh EUuyNxeZowzsMp8dmPKMCshKqAyBteG3PGAOY= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=bx2mMoM9mJWCNDw4nD8Qjv9n9w+y6A5e1Wcu1/6t4ew=; b=VXHE4pUhA/BfIpEkHYj4DpyGUny1iR7YBmhmA+pT/raOC3IGL0h3DblgUsWtad5+Jv iiuv5UaR2hvCMv+VKjHFVFR+csWwODXQaLVO9Usesto0EXdhAH8S2SsB4AwR8FCqLd+m RTJNCSFpf/SHYc6pBt/wbxP1wbJuiCCL6JOxZpBvOtqDsCNDJMYCIVwGDf0mU3uZkXB+ TC4Wp4MYBQQwXC0pL73Nu3O45pFbS6xcCVqEEAjxRMVLMIPGnzKPhb5QcF+Yz29ayJ7E 0trXYcT2RVaYLYPm1VKD2Z4RIJW4abjV+3C12Rma14+ll6C6KPkw+sh/VLsC2JfjrzFt FL/g== X-Gm-Message-State: APzg51Aud3lIpVaNVH5VSxsU7rC7FuoJvfP94E3sEeDcCHfBoEeDlcdm mXSfYtqkSk2fI5hhYV0FiLF5Kb40zYE= X-Google-Smtp-Source: ANB0VdaARkFK1VB+Biomb0FIn7ZAoH6LCyVAEUReGGs3XBAyCPMCNFHf5V+j0VoiFlGFIGkcO9ScBQ== X-Received: by 2002:aed:2947:: with SMTP id s65-v6mr9749563qtd.189.1535599633730; Wed, 29 Aug 2018 20:27:13 -0700 (PDT) Received: from localhost.localdomain.localdomain ([192.19.234.250]) by smtp.gmail.com with ESMTPSA id f184-v6sm3215427qkc.23.2018.08.29.20.27.11 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 29 Aug 2018 20:27:13 -0700 (PDT) From: Suganath Prabu S To: linux-scsi@vger.kernel.org Cc: Sathya.Prakash@broadcom.com, sreekanth.reddy@broadcom.com, Suganath Prabu S Subject: [PATCH 5/7] mpt3sas: Fix Sync cache command failure during driver unload. Date: Wed, 29 Aug 2018 23:26:31 -0400 Message-Id: <1535599593-4739-6-git-send-email-suganath-prabu.subramani@broadcom.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1535599593-4739-1-git-send-email-suganath-prabu.subramani@broadcom.com> References: <1535599593-4739-1-git-send-email-suganath-prabu.subramani@broadcom.com> Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This is to fix Sync cache and start stop command failures with DID_NO_CONNECT during driver unload. 1) Release drives first from SML, then remove internally in driver. 2) And allow sync cache and Start stop commands to firmware, even when remove_host flag is set. Signed-off-by: Suganath Prabu S --- drivers/scsi/mpt3sas/mpt3sas_scsih.c | 41 ++++++++++++++++++++++++++++++-- drivers/scsi/mpt3sas/mpt3sas_transport.c | 7 ++++-- 2 files changed, 44 insertions(+), 4 deletions(-) diff --git a/drivers/scsi/mpt3sas/mpt3sas_scsih.c b/drivers/scsi/mpt3sas/mpt3sas_scsih.c index 2c7f44c..f796808 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_scsih.c +++ b/drivers/scsi/mpt3sas/mpt3sas_scsih.c @@ -3806,6 +3806,43 @@ _scsih_tm_tr_complete(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index, return _scsih_check_for_pending_tm(ioc, smid); } +/** _scsih_allow_scmd_to_device - check whether scmd needs to + * issue to IOC or not. + * @ioc: per adapter object + * @scmd: pointer to scsi command object + * + * Returns true if scmd can be issued to IOC otherwise returns false. + */ +inline bool _scsih_allow_scmd_to_device(struct MPT3SAS_ADAPTER *ioc, + struct scsi_cmnd *scmd) +{ + + if (ioc->pci_error_recovery) + return false; + + if (ioc->hba_mpi_version_belonged == MPI2_VERSION) { + if (ioc->remove_host) + return false; + + return true; + } + + + if (ioc->remove_host) { + if (mpt3sas_base_pci_device_is_unplugged(ioc)) + return false; + + switch (scmd->cmnd[0]) { + case SYNCHRONIZE_CACHE: + case START_STOP: + return true; + default: + return false; + } + } + + return true; +} /** * _scsih_sas_control_complete - completion routine @@ -4640,7 +4677,7 @@ scsih_qcmd(struct Scsi_Host *shost, struct scsi_cmnd *scmd) return 0; } - if (ioc->pci_error_recovery || ioc->remove_host) { + if (!(_scsih_allow_scmd_to_device(ioc, scmd))) { scmd->result = DID_NO_CONNECT << 16; scmd->scsi_done(scmd); return 0; @@ -9876,6 +9913,7 @@ static void scsih_remove(struct pci_dev *pdev) /* release all the volumes */ _scsih_ir_shutdown(ioc); + sas_remove_host(shost); list_for_each_entry_safe(raid_device, next, &ioc->raid_device_list, list) { if (raid_device->starget) { @@ -9918,7 +9956,6 @@ static void scsih_remove(struct pci_dev *pdev) ioc->sas_hba.num_phys = 0; } - sas_remove_host(shost); mpt3sas_base_detach(ioc); spin_lock(&gioc_lock); list_del(&ioc->list); diff --git a/drivers/scsi/mpt3sas/mpt3sas_transport.c b/drivers/scsi/mpt3sas/mpt3sas_transport.c index b10d73e..742da74 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_transport.c +++ b/drivers/scsi/mpt3sas/mpt3sas_transport.c @@ -817,10 +817,13 @@ mpt3sas_transport_port_remove(struct MPT3SAS_ADAPTER *ioc, u64 sas_address, mpt3sas_port->remote_identify.sas_address, mpt3sas_phy->phy_id); mpt3sas_phy->phy_belongs_to_port = 0; - sas_port_delete_phy(mpt3sas_port->port, mpt3sas_phy->phy); + if (!ioc->remove_host) + sas_port_delete_phy(mpt3sas_port->port, + mpt3sas_phy->phy); list_del(&mpt3sas_phy->port_siblings); } - sas_port_delete(mpt3sas_port->port); + if (!ioc->remove_host) + sas_port_delete(mpt3sas_port->port); kfree(mpt3sas_port); }