From patchwork Thu Sep 20 11:04:05 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: 10607431 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 3006114BD for ; Thu, 20 Sep 2018 11:04:31 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 20B1E2CE9D for ; Thu, 20 Sep 2018 11:04:31 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 14FED2CFA3; Thu, 20 Sep 2018 11:04:31 +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 68C4D2CE9D for ; Thu, 20 Sep 2018 11:04:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731580AbeITQrZ (ORCPT ); Thu, 20 Sep 2018 12:47:25 -0400 Received: from mail-ed1-f65.google.com ([209.85.208.65]:42617 "EHLO mail-ed1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726954AbeITQrZ (ORCPT ); Thu, 20 Sep 2018 12:47:25 -0400 Received: by mail-ed1-f65.google.com with SMTP id l5so7476727edw.9 for ; Thu, 20 Sep 2018 04:04:27 -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=CoDW66MzWENm3Is/Q7t09OOrS5SFG5MdugHEwLlDPHc=; b=e3IcV2DfxDlavk6zYeQxWDwuvIa5DRZ8+NRawGesTjJKhs2RZoT6bpVmdJbc6XKYAq 0zktmS6FK8Z9bGoWGhPIe9iv82AbXnYC7jJSsn5SnU2uJptNDEjQ3xf6UxiXpOyH2T8E BKnt8/YL4+eQWKeSWgHDziZYEFvhm1cORcNJo= 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=CoDW66MzWENm3Is/Q7t09OOrS5SFG5MdugHEwLlDPHc=; b=UF9jYYD+t6aSU07pHuAyg16EHzyDKWXTWlH0P+SFdaCNaQg2StM8xbRsXzzu8Skg5C jO0ktP4mPfSupL+8XP3a/XCIUdC+k6aDSlAvkLuWrGAQHWkddl3qq3VfywosnDwpmj/j 1NKFBkVLGS+qig30BalTdiXuR8aTamV9tUPXhhxY2rqqUsmd8UlbShwMVBJbcBoyM5Vw gIESvfwrl9mcURrb8p/qyozlhlq3vfR2a0dukSKmqsVOjQFEeVt+PMLrzcsLLPnWEAyG y+w9El+Pz43xLVdpIXLBfWvxoMQQb4FYLFcPfkvBE3e39Q4AQNHjWND+FtS4deYylqy+ /O1w== X-Gm-Message-State: APzg51AePy/BFOkGJU+Ari0dhMXSPeiytUuNM+YwXYYawhXjtVIHIFFz c5Rtuq6DQ/t/30iBtIpDbmPefim+93k= X-Google-Smtp-Source: ANB0VdYv0nDs9iByJ9rqkSbGVrrHvkyhLZAuMxwlfhDZ8TKjWlc3QiOwaJtUF/9xtuzI6liMj//BGA== X-Received: by 2002:aa7:c990:: with SMTP id c16-v6mr3503626edt.165.1537441466325; Thu, 20 Sep 2018 04:04:26 -0700 (PDT) Received: from dhcp-10-123-74-106.dhcp.broadcom.net ([192.19.234.250]) by smtp.gmail.com with ESMTPSA id s36-v6sm1232534edb.56.2018.09.20.04.04.23 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 20 Sep 2018 04:04:25 -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 v2 1/6] mpt3sas: Introduce mpt3sas_base_pci_device_is_available Date: Thu, 20 Sep 2018 16:34:05 +0530 Message-Id: <1537441450-12434-2-git-send-email-suganath-prabu.subramani@broadcom.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1537441450-12434-1-git-send-email-suganath-prabu.subramani@broadcom.com> References: <1537441450-12434-1-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 * Driver uses "pci_device_is_present" to check whether If Hot unplugged: the outstanding IOs with 'DID_NO_CONNECT' before removing the drives attached to the HBA. "DID_NO_CONNECT" status and free the smid, if driver detects that HBA is hot unplugged. * In the hard reset flush out all the outstanding IOs even if diag reset fails and also if driver detects that HBA is hot unplugged. v1 change set: ============== unlock mutex before goto "out_unlocked", if active reset is in progress. v2 change set: ============== 1) Use pci_device_is_present instead of mpt3sas_base_pci_device_is_unplugged. 2) As suggested by Lukas, removed using watchdog thread for checking hba hot unplug(Patch 02 of V1). Added Hot unplug checks in scan finish and reset paths. Signed-off-by: Suganath Prabu S --- drivers/scsi/mpt3sas/mpt3sas_base.c | 46 ++++++++++++++++++++++++++++++++- drivers/scsi/mpt3sas/mpt3sas_base.h | 2 +- drivers/scsi/mpt3sas/mpt3sas_scsih.c | 50 ++++++++++++++++++++++++++++++++---- 3 files changed, 91 insertions(+), 7 deletions(-) diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.c b/drivers/scsi/mpt3sas/mpt3sas_base.c index 59d7844..89b74ed 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_base.c +++ b/drivers/scsi/mpt3sas/mpt3sas_base.c @@ -62,7 +62,6 @@ #include /* To get host page size per arch */ #include - #include "mpt3sas_base.h" static MPT_CALLBACK mpt_callbacks[MPT_MAX_CALLBACKS]; @@ -543,6 +542,24 @@ static int mpt3sas_remove_dead_ioc_func(void *arg) } /** + * mpt3sas_base_pci_device_is_available - check whether pci device is + * available for any transactions with FW + * + * @ioc: per adapter object + * + * Return 1 if pci device state is up and running else return 0. + */ +u8 +mpt3sas_base_pci_device_is_available(struct MPT3SAS_ADAPTER *ioc) +{ + if (ioc->pci_error_recovery || + (!pci_device_is_present(ioc->pdev))) + return 0; + + return 1; +} + +/** * _base_fault_reset_work - workq handling ioc fault conditions * @work: input argument, used to derive ioc * @@ -6122,6 +6139,11 @@ _base_diag_reset(struct MPT3SAS_ADAPTER *ioc) count = 0; do { + if (!pci_device_is_present(ioc->pdev)) { + ioc->remove_host = 1; + pr_err(MPT3SAS_FMT "Hba Hot unplugged\n", ioc->name); + goto out; + } /* Write magic sequence to WriteSequence register * Loop until in diagnostic mode */ @@ -6853,6 +6875,14 @@ mpt3sas_wait_for_commands_to_complete(struct MPT3SAS_ADAPTER *ioc) ioc->pending_io_count = 0; + if (!mpt3sas_base_pci_device_is_available(ioc)) { + pr_err(MPT3SAS_FMT + "%s: pci error recovery reset or" + " pci device unplug occurred\n", + ioc->name, __func__); + return; + } + ioc_state = mpt3sas_base_get_iocstate(ioc, 0); if ((ioc_state & MPI2_IOC_STATE_MASK) != MPI2_IOC_STATE_OPERATIONAL) return; @@ -6899,6 +6929,20 @@ mpt3sas_base_hard_reset_handler(struct MPT3SAS_ADAPTER *ioc, /* wait for an active reset in progress to complete */ mutex_lock(&ioc->reset_in_progress_mutex); + if (!mpt3sas_base_pci_device_is_available(ioc)) { + pr_err(MPT3SAS_FMT + "%s: pci error recovery reset or" + " pci device unplug occurred\n", + ioc->name, __func__); + if (!pci_device_is_present(ioc->pdev)) + ioc->schedule_dead_ioc_flush_running_cmds(ioc); + r = 0; + mutex_unlock(&ioc->reset_in_progress_mutex); + goto out_unlocked; + } + + mpt3sas_halt_firmware(ioc); + spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags); ioc->shost_recovery = 1; spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags); diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.h b/drivers/scsi/mpt3sas/mpt3sas_base.h index 96dc15e..d673b00 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_base.h +++ b/drivers/scsi/mpt3sas/mpt3sas_base.h @@ -1474,7 +1474,7 @@ void mpt3sas_base_update_missing_delay(struct MPT3SAS_ADAPTER *ioc, u16 device_missing_delay, u8 io_missing_delay); int mpt3sas_port_enable(struct MPT3SAS_ADAPTER *ioc); - +u8 mpt3sas_base_pci_device_is_available(struct MPT3SAS_ADAPTER *ioc); void mpt3sas_wait_for_commands_to_complete(struct MPT3SAS_ADAPTER *ioc); diff --git a/drivers/scsi/mpt3sas/mpt3sas_scsih.c b/drivers/scsi/mpt3sas/mpt3sas_scsih.c index 53133cf..566a550 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_scsih.c +++ b/drivers/scsi/mpt3sas/mpt3sas_scsih.c @@ -2846,9 +2846,19 @@ scsih_abort(struct scsi_cmnd *scmd) "attempting task abort! scmd(%p)\n", scmd); _scsih_tm_display_info(ioc, scmd); + if (!pci_device_is_present(ioc->pdev) || ioc->remove_host) { + sdev_printk(KERN_INFO, scmd->device, "%s scmd(%p)\n", + ((ioc->remove_host) ? ("shost is getting removed!") : + ("pci device been removed!")), scmd); + if (st && st->smid) + mpt3sas_base_free_smid(ioc, st->smid); + scmd->result = DID_NO_CONNECT << 16; + r = FAST_IO_FAIL; + goto out; + } + sas_device_priv_data = scmd->device->hostdata; - if (!sas_device_priv_data || !sas_device_priv_data->sas_target || - ioc->remove_host) { + if (!sas_device_priv_data || !sas_device_priv_data->sas_target) { sdev_printk(KERN_INFO, scmd->device, "device been deleted! scmd(%p)\n", scmd); scmd->result = DID_NO_CONNECT << 16; @@ -2918,6 +2928,15 @@ scsih_dev_reset(struct scsi_cmnd *scmd) "attempting device reset! scmd(%p)\n", scmd); _scsih_tm_display_info(ioc, scmd); + if (!pci_device_is_present(ioc->pdev) || ioc->remove_host) { + sdev_printk(KERN_INFO, scmd->device, "%s scmd(%p)\n", + ((ioc->remove_host) ? ("shost is getting removed!") : + ("pci device been removed!")), scmd); + scmd->result = DID_NO_CONNECT << 16; + r = FAST_IO_FAIL; + goto out; + } + sas_device_priv_data = scmd->device->hostdata; if (!sas_device_priv_data || !sas_device_priv_data->sas_target || ioc->remove_host) { @@ -2995,9 +3014,17 @@ scsih_target_reset(struct scsi_cmnd *scmd) scmd); _scsih_tm_display_info(ioc, scmd); + if ((!pci_device_is_present(ioc->pdev)) || ioc->remove_host) { + sdev_printk(KERN_INFO, scmd->device, "%s scmd(%p)\n", + ((ioc->remove_host) ? ("shost is getting removed!") : + ("pci device been removed!")), scmd); + scmd->result = DID_NO_CONNECT << 16; + r = FAST_IO_FAIL; + goto out; + } + sas_device_priv_data = scmd->device->hostdata; - if (!sas_device_priv_data || !sas_device_priv_data->sas_target || - ioc->remove_host) { + if (!sas_device_priv_data || !sas_device_priv_data->sas_target) { starget_printk(KERN_INFO, starget, "target been deleted! scmd(%p)\n", scmd); scmd->result = DID_NO_CONNECT << 16; @@ -4474,7 +4501,9 @@ _scsih_flush_running_cmds(struct MPT3SAS_ADAPTER *ioc) st = scsi_cmd_priv(scmd); mpt3sas_base_clear_st(ioc, st); scsi_dma_unmap(scmd); - if (ioc->pci_error_recovery || ioc->remove_host) + + if ((!mpt3sas_base_pci_device_is_available(ioc)) + || ioc->remove_host) scmd->result = DID_NO_CONNECT << 16; else scmd->result = DID_RESET << 16; @@ -9726,6 +9755,9 @@ _scsih_ir_shutdown(struct MPT3SAS_ADAPTER *ioc) if (list_empty(&ioc->raid_device_list)) return; + if (!pci_device_is_present(ioc->pdev)) + return; + mutex_lock(&ioc->scsih_cmds.mutex); if (ioc->scsih_cmds.status != MPT3_CMD_NOT_USED) { @@ -10247,6 +10279,14 @@ scsih_scan_finished(struct Scsi_Host *shost, unsigned long time) { struct MPT3SAS_ADAPTER *ioc = shost_priv(shost); + if (!pci_device_is_present(ioc->pdev)) { + complete(&ioc->port_enable_cmds.done); + ioc->port_enable_cmds.status = MPT3_CMD_NOT_USED; + ioc->is_driver_loading = 0; + ioc->remove_host = 1; + return 1; + } + if (disable_discovery > 0) { ioc->is_driver_loading = 0; ioc->wait_for_discovery_to_complete = 0;