From mboxrd@z Thu Jan 1 00:00:00 1970 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=-18.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,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 A68FCC6379D for ; Thu, 26 Nov 2020 09:45:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 397F921D7F for ; Thu, 26 Nov 2020 09:45:57 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=broadcom.com header.i=@broadcom.com header.b="ct2lJWyf" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1733248AbgKZJpp (ORCPT ); Thu, 26 Nov 2020 04:45:45 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50152 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1733240AbgKZJpo (ORCPT ); Thu, 26 Nov 2020 04:45:44 -0500 Received: from mail-pf1-x442.google.com (mail-pf1-x442.google.com [IPv6:2607:f8b0:4864:20::442]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4B3A3C0613D4 for ; Thu, 26 Nov 2020 01:45:44 -0800 (PST) Received: by mail-pf1-x442.google.com with SMTP id n137so1191521pfd.3 for ; Thu, 26 Nov 2020 01:45:44 -0800 (PST) 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 :mime-version; bh=U7+tT/+gThjwd4e5TUlYCvovURlt3tudJGVem9Fj3lQ=; b=ct2lJWyfhim8B1RibAM2cy/6+C3n7NpLrZI3JVKq3f8TKqTRHFHVTqcxtitJPS6saI P/wjp3zZx+X5Vd82fDrvJ/UHwR2CBPk+k/Ui5CQ0SHWuN7EJM8w6RlHzcDSXYB+0JhLK 4w13W6ZX9C0AJOBThDJBDmX0n1xfTR7YQv/zg= 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:mime-version; bh=U7+tT/+gThjwd4e5TUlYCvovURlt3tudJGVem9Fj3lQ=; b=R7KgkYmLDvjBfSWGID2OytcbsQEvMyy9Np4QluqBBaa4LaQKS9ePHITMKNzYBcuse6 sjVPjaTx9i1gxLaAdNJQ3oue89BSEw9tc1BNUzcdHt/sLI9aiVRBU93R5IYZwOSApH4s xMd4B0D44ljQYMpcRljVPW+ewTCFm+eMFBJU/n8L6Yr7UClA1zjnbaxBJ5rfBgltxKWy FnfNI2xDmOSx2Z1zfyPt/J/n93lQg1ByzREGQh1DDnKPcs/Ws/qP0whEnYCTe3Tf/pfq Znq1yTV+ap64TO2xXnn/8Kl/+MCrtHLJChcwjF7dDVCNopV66iD1UYPsBaHakVFw7ZhV 0MWg== X-Gm-Message-State: AOAM5315Bznw2KUAleDU5R1nniJsXXN3SkJ3p0kngAI7cManuuGuVEt3 cDXhrpiA88nb26Pk1kjhfNvRFDfU8Ss966biPRbIKdbr+Zr5adzzmDgp8RK3imYdRXTFGJMCgx0 tMEo/g0PMRe9ZPEFUgylyXn1cQC0cbChnUuPSsJRXflkmZmxA6X+urSVEQpq68SewLiS/xKbEj1 7vGImVZ/SFNNWKgsF2TivO0UM= X-Google-Smtp-Source: ABdhPJzXzOCZTlsdodujkf4SgwRega1arIyjtG1h9CzBSiPPM1q8uIRfkp+sXuT2lQMkA0q25p0IkQ== X-Received: by 2002:a63:4d0e:: with SMTP id a14mr1871124pgb.91.1606383943091; Thu, 26 Nov 2020 01:45:43 -0800 (PST) Received: from dhcp-10-123-20-14.dhcp.broadcom.net ([192.19.234.250]) by smtp.gmail.com with ESMTPSA id i10sm4343220pfk.206.2020.11.26.01.45.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 26 Nov 2020 01:45:42 -0800 (PST) From: Suganath Prabu S To: linux-scsi@vger.kernel.org, martin.petersen@oracle.com Cc: Sathya.Prakash@broadcom.com, sreekanth.reddy@broadcom.com, Suganath Prabu S , kernel test robot Subject: [PATCH v1 1/8] mpt3sas: Sync time stamp periodically between Driver and FW Date: Thu, 26 Nov 2020 15:13:04 +0530 Message-Id: <20201126094311.8686-2-suganath-prabu.subramani@broadcom.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20201126094311.8686-1-suganath-prabu.subramani@broadcom.com> References: <20201126094311.8686-1-suganath-prabu.subramani@broadcom.com> MIME-Version: 1.0 Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="00000000000056298805b4ff68e3" Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org --00000000000056298805b4ff68e3 Content-Transfer-Encoding: 8bit Issue Description: In current Driver/FW, the controller timestamp gets updated with host time during driver load time or when a controller reset is issued. i.e. when host issues the IOCInit request message to the HBA FW. This IOCInit message has a field named 'TimeStamp' using which the host updates the controller timestamp. Over a period, sometimes we may observe controller time drifting away from host and it is difficult to co-relate host logs with controller logs with respect to time. And every time driver cannot issue the IOCInit request message just for updating the controller timestamp. Implementation: Instead of IOCInit, driver sends IO_UNIT_CONTROL Request to sync time stamp periodically with controller. Timestamp synchronization interval is specified in 'TimeSyncInterval' field of Manufacturing Page11 by controller. TimeSyncInterval - 8 bits bits 0-6: Time stamp Synchronization interval value bit 7: Time stamp Synchronization interval unit, (if this bit is one then Timestamp Synchronization interval value is specified in terms of hours else Timestamp Synchronization interval value is specified in terms of minutes). Driver sends this IO_UNIT_CONTROL Request message from watchdog thread (which gets invoked every one second). Driver keeps tracks of timer using ioc's timestamp_update_count field. This field value gets incremented whenever the watchdog thread gets invoked. And whenever this field value is greater than or equals to the Time stamp Synchronization interval value then driver sends the IO_UNIT_CONTROL Request message to controller to update the time stamp and then it resets the timestamp_update_count field to zero. Syncing Driver and FW timestamp periodically makes correlating the FW logs and OS events easier. Signed-off-by: Suganath Prabu S Reported-by: kernel test robot --- v1 Changes: Fixed sparse warnings. drivers/scsi/mpt3sas/mpt3sas_base.c | 93 ++++++++++++++++++++++++++++- drivers/scsi/mpt3sas/mpt3sas_base.h | 14 ++++- 2 files changed, 104 insertions(+), 3 deletions(-) diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.c b/drivers/scsi/mpt3sas/mpt3sas_base.c index 93230cd..8538c2d 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_base.c +++ b/drivers/scsi/mpt3sas/mpt3sas_base.c @@ -596,6 +596,71 @@ static int mpt3sas_remove_dead_ioc_func(void *arg) return 0; } +/** + * _base_sync_drv_fw_timestamp - Sync Drive-Fw TimeStamp. + * @ioc: Per Adapter Object + * + * Return nothing. + */ +static void _base_sync_drv_fw_timestamp(struct MPT3SAS_ADAPTER *ioc) +{ + Mpi26IoUnitControlRequest_t *mpi_request; + Mpi26IoUnitControlReply_t *mpi_reply; + u16 smid; + ktime_t current_time; + u64 TimeStamp = 0; + u8 issue_reset = 0; + + mutex_lock(&ioc->scsih_cmds.mutex); + if (ioc->scsih_cmds.status != MPT3_CMD_NOT_USED) { + ioc_err(ioc, "scsih_cmd in use %s\n", __func__); + goto out; + } + ioc->scsih_cmds.status = MPT3_CMD_PENDING; + smid = mpt3sas_base_get_smid(ioc, ioc->scsih_cb_idx); + if (!smid) { + ioc_err(ioc, "Failed obtaining a smid %s\n", __func__); + ioc->scsih_cmds.status = MPT3_CMD_NOT_USED; + goto out; + } + mpi_request = mpt3sas_base_get_msg_frame(ioc, smid); + ioc->scsih_cmds.smid = smid; + memset(mpi_request, 0, sizeof(Mpi26IoUnitControlRequest_t)); + mpi_request->Function = MPI2_FUNCTION_IO_UNIT_CONTROL; + mpi_request->Operation = MPI26_CTRL_OP_SET_IOC_PARAMETER; + mpi_request->IOCParameter = MPI26_SET_IOC_PARAMETER_SYNC_TIMESTAMP; + current_time = ktime_get_real(); + TimeStamp = ktime_to_ms(current_time); + mpi_request->Reserved7 = cpu_to_le32(TimeStamp & 0xFFFFFFFF); + mpi_request->IOCParameterValue = cpu_to_le32(TimeStamp >> 32); + init_completion(&ioc->scsih_cmds.done); + ioc->put_smid_default(ioc, smid); + dinitprintk(ioc, ioc_info(ioc, + "Io Unit Control Sync TimeStamp (sending), @time %lld ms\n", + TimeStamp)); + wait_for_completion_timeout(&ioc->scsih_cmds.done, + MPT3SAS_TIMESYNC_TIMEOUT_SECONDS*HZ); + if (!(ioc->scsih_cmds.status & MPT3_CMD_COMPLETE)) { + mpt3sas_check_cmd_timeout(ioc, + ioc->scsih_cmds.status, mpi_request, + sizeof(Mpi2SasIoUnitControlRequest_t)/4, issue_reset); + goto issue_host_reset; + } + if (ioc->scsih_cmds.status & MPT3_CMD_REPLY_VALID) { + mpi_reply = ioc->scsih_cmds.reply; + dinitprintk(ioc, ioc_info(ioc, + "Io Unit Control sync timestamp (complete): ioc_status(0x%04x), loginfo(0x%08x)\n", + le16_to_cpu(mpi_reply->IOCStatus), + le32_to_cpu(mpi_reply->IOCLogInfo))); + } +issue_host_reset: + if (issue_reset) + mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER); + ioc->scsih_cmds.status = MPT3_CMD_NOT_USED; +out: + mutex_unlock(&ioc->scsih_cmds.mutex); +} + /** * _base_fault_reset_work - workq handling ioc fault conditions * @work: input argument, used to derive ioc @@ -720,7 +785,11 @@ _base_fault_reset_work(struct work_struct *work) return; /* don't rearm timer */ } ioc->ioc_coredump_loop = 0; - + if (ioc->time_sync_interval && + ++ioc->timestamp_update_count >= ioc->time_sync_interval) { + ioc->timestamp_update_count = 0; + _base_sync_drv_fw_timestamp(ioc); + } spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags); rearm_timer: if (ioc->fault_reset_work_q) @@ -744,6 +813,7 @@ mpt3sas_base_start_watchdog(struct MPT3SAS_ADAPTER *ioc) if (ioc->fault_reset_work_q) return; + ioc->timestamp_update_count = 0; /* initialize fault polling */ INIT_DELAYED_WORK(&ioc->fault_reset_work, _base_fault_reset_work); @@ -4754,7 +4824,24 @@ _base_static_config_pages(struct MPT3SAS_ADAPTER *ioc) else ioc->nvme_abort_timeout = ioc->manu_pg11.NVMeAbortTO; } - + ioc->time_sync_interval = + ioc->manu_pg11.TimeSyncInterval & MPT3SAS_TIMESYNC_MASK; + if (ioc->time_sync_interval) { + if (ioc->manu_pg11.TimeSyncInterval & MPT3SAS_TIMESYNC_UNIT_MASK) + ioc->time_sync_interval = + ioc->time_sync_interval * SECONDS_PER_HOUR; + else + ioc->time_sync_interval = + ioc->time_sync_interval * SECONDS_PER_MIN; + dinitprintk(ioc, ioc_info(ioc, + "Driver-FW TimeSync interval is %d seconds. ManuPg11 TimeSync Unit is in %s\n", + ioc->time_sync_interval, (ioc->manu_pg11.TimeSyncInterval & + MPT3SAS_TIMESYNC_UNIT_MASK) ? "Hour" : "Minute")); + } else { + if (ioc->is_gen35_ioc) + ioc_warn(ioc, + "TimeSync Interval in Manuf page-11 is not enabled. Periodic Time-Sync will be disabled\n"); + } mpt3sas_config_get_bios_pg2(ioc, &mpi_reply, &ioc->bios_pg2); mpt3sas_config_get_bios_pg3(ioc, &mpi_reply, &ioc->bios_pg3); mpt3sas_config_get_ioc_pg8(ioc, &mpi_reply, &ioc->ioc_pg8); @@ -6466,6 +6553,8 @@ _base_send_ioc_init(struct MPT3SAS_ADAPTER *ioc) r = -EIO; } + /* Reset TimeSync Counter*/ + ioc->timestamp_update_count = 0; return r; } diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.h b/drivers/scsi/mpt3sas/mpt3sas_base.h index 7dab579..cc4815c 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_base.h +++ b/drivers/scsi/mpt3sas/mpt3sas_base.h @@ -93,6 +93,14 @@ /* CoreDump: Default timeout */ #define MPT3SAS_DEFAULT_COREDUMP_TIMEOUT_SECONDS (15) /*15 seconds*/ #define MPT3SAS_COREDUMP_LOOP_DONE (0xFF) +#define MPT3SAS_TIMESYNC_TIMEOUT_SECONDS (10) /* 10 seconds */ +#define MPT3SAS_TIMESYNC_UPDATE_INTERVAL (900) /* 15 minutes */ +#define MPT3SAS_TIMESYNC_UNIT_MASK (0x80) /* bit 7 */ +#define MPT3SAS_TIMESYNC_MASK (0x7F) /* 0 - 6 bits */ +#define SECONDS_PER_MIN (60) +#define SECONDS_PER_HOUR (3600) +#define MPT3SAS_COREDUMP_LOOP_DONE (0xFF) +#define MPI26_SET_IOC_PARAMETER_SYNC_TIMESTAMP (0x81) /* * Set MPT3SAS_SG_DEPTH value based on user input. @@ -405,7 +413,7 @@ struct Mpi2ManufacturingPage11_t { u16 HostTraceBufferMaxSizeKB; /* 50h */ u16 HostTraceBufferMinSizeKB; /* 52h */ u8 CoreDumpTOSec; /* 54h */ - u8 Reserved8; /* 55h */ + u8 TimeSyncInterval; /* 55h */ u16 Reserved9; /* 56h */ __le32 Reserved10; /* 58h */ }; @@ -1113,6 +1121,8 @@ typedef void (*MPT3SAS_FLUSH_RUNNING_CMDS)(struct MPT3SAS_ADAPTER *ioc); * @cpu_msix_table_sz: table size * @total_io_cnt: Gives total IO count, used to load balance the interrupts * @ioc_coredump_loop: will have non-zero value when FW is in CoreDump state + * @timestamp_update_count: Counter to fire timeSync command + * time_sync_interval: Time sync interval read from man page 11 * @high_iops_outstanding: used to load balance the interrupts * within high iops reply queues * @msix_load_balance: Enables load balancing of interrupts across @@ -1308,6 +1318,8 @@ struct MPT3SAS_ADAPTER { MPT3SAS_FLUSH_RUNNING_CMDS schedule_dead_ioc_flush_running_cmds; u32 non_operational_loop; u8 ioc_coredump_loop; + u32 timestamp_update_count; + u32 time_sync_interval; atomic64_t total_io_cnt; atomic64_t high_iops_outstanding; bool msix_load_balance; -- 2.27.0 --00000000000056298805b4ff68e3 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIIQZgYJKoZIhvcNAQcCoIIQVzCCEFMCAQExDzANBglghkgBZQMEAgEFADALBgkqhkiG9w0BBwGg gg27MIIE6DCCA9CgAwIBAgIOSBtqCRO9gCTKXSLwFPMwDQYJKoZIhvcNAQELBQAwTDEgMB4GA1UE CxMXR2xvYmFsU2lnbiBSb290IENBIC0gUjMxEzARBgNVBAoTCkdsb2JhbFNpZ24xEzARBgNVBAMT Ckdsb2JhbFNpZ24wHhcNMTYwNjE1MDAwMDAwWhcNMjQwNjE1MDAwMDAwWjBdMQswCQYDVQQGEwJC RTEZMBcGA1UEChMQR2xvYmFsU2lnbiBudi1zYTEzMDEGA1UEAxMqR2xvYmFsU2lnbiBQZXJzb25h 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