[5/7] mpt3sas: Added helper functions to check any cmd is outstanding on Target and LUN.

Message ID	1596096229-3341-6-git-send-email-suganath-prabu.subramani@broadcom.com (mailing list archive)
State	Accepted
Headers	show Return-Path: <SRS0=dYxQ=BJ=vger.kernel.org=linux-scsi-owner@kernel.org> From: Suganath Prabu S <suganath-prabu.subramani@broadcom.com> To: martin.petersen@oracle.com Cc: linux-scsi@vger.kernel.org, sreekanth.reddy@broadcom.com, sathya.prakash@broadcom.com, Suganath Prabu S <suganath-prabu.subramani@broadcom.com> Subject: [PATCH 5/7] mpt3sas: Added helper functions to check any cmd is outstanding on Target and LUN. Date: Thu, 30 Jul 2020 13:33:47 +0530 Message-Id: <1596096229-3341-6-git-send-email-suganath-prabu.subramani@broadcom.com> In-Reply-To: <1596096229-3341-1-git-send-email-suganath-prabu.subramani@broadcom.com> References: <1596096229-3341-1-git-send-email-suganath-prabu.subramani@broadcom.com> Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk
Series	mpt3sas: Enhancements and bug fixes \| expand [0/7] mpt3sas: Enhancements and bug fixes [1/7] mpt3sas: Memset config_cmds.reply buffer with zeros [2/7] mpt3sas: Dump system registers for debugging. [3/7] mpt3sas: Cancel the running work during host reset. [4/7] mpt3sas: Rename and export interrupt mask/unmask fn's. [5/7] mpt3sas: Added helper functions to check any cmd is outstanding on Target and LUN. [6/7] mpt3sas: Postprocessing of target and LUN reset. [7/7] mpt3sas: Update driver version to 35.100.00.00

diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.h b/drivers/scsi/mpt3sas/mpt3sas_base.h index 9da7265..fd61deb 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_base.h +++ b/drivers/scsi/mpt3sas/mpt3sas_base.h @@ -1610,11 +1610,12 @@ void mpt3sas_scsih_clear_outstanding_scsi_tm_commands( struct MPT3SAS_ADAPTER *ioc); void mpt3sas_scsih_reset_done_handler(struct MPT3SAS_ADAPTER *ioc); -int mpt3sas_scsih_issue_tm(struct MPT3SAS_ADAPTER *ioc, u16 handle, u64 lun, - u8 type, u16 smid_task, u16 msix_task, u8 timeout, u8 tr_method); +int mpt3sas_scsih_issue_tm(struct MPT3SAS_ADAPTER *ioc, u16 handle, + uint channel, uint id, u64 lun, u8 type, u16 smid_task, + u16 msix_task, u8 timeout, u8 tr_method); int mpt3sas_scsih_issue_locked_tm(struct MPT3SAS_ADAPTER *ioc, u16 handle, - u64 lun, u8 type, u16 smid_task, u16 msix_task, - u8 timeout, u8 tr_method); + uint channel, uint id, u64 lun, u8 type, u16 smid_task, + u16 msix_task, u8 timeout, u8 tr_method); void mpt3sas_scsih_set_tm_flag(struct MPT3SAS_ADAPTER *ioc, u16 handle); void mpt3sas_scsih_clear_tm_flag(struct MPT3SAS_ADAPTER *ioc, u16 handle); diff --git a/drivers/scsi/mpt3sas/mpt3sas_ctl.c b/drivers/scsi/mpt3sas/mpt3sas_ctl.c index 62e5528..98d6b9c 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_ctl.c +++ b/drivers/scsi/mpt3sas/mpt3sas_ctl.c @@ -1109,13 +1109,15 @@ _ctl_do_mpt_command(struct MPT3SAS_ADAPTER *ioc, struct mpt3_ioctl_command karg, pcie_device->device_info)))) mpt3sas_scsih_issue_locked_tm(ioc, le16_to_cpu(mpi_request->FunctionDependent1), - 0, MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET, 0, + 0, 0, 0, + MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET, 0, 0, pcie_device->reset_timeout, MPI26_SCSITASKMGMT_MSGFLAGS_PROTOCOL_LVL_RST_PCIE); else mpt3sas_scsih_issue_locked_tm(ioc, le16_to_cpu(mpi_request->FunctionDependent1), - 0, MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET, 0, + 0, 0, 0, + MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET, 0, 0, 30, MPI2_SCSITASKMGMT_MSGFLAGS_LINK_RESET); } else mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER); diff --git a/drivers/scsi/mpt3sas/mpt3sas_scsih.c b/drivers/scsi/mpt3sas/mpt3sas_scsih.c index 66b29d4..ce12253 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_scsih.c +++ b/drivers/scsi/mpt3sas/mpt3sas_scsih.c @@ -1512,6 +1512,66 @@ _scsih_is_nvme_pciescsi_device(u32 device_info) return 0; } +/** + * _scsih_scsi_lookup_find_by_target - search for matching channel:id + * @ioc: per adapter object + * @id: target id + * @channel: channel + * Context: This function will acquire ioc->scsi_lookup_lock. + * + * This will search for a matching channel:id in the scsi_lookup array, + * returning 1 if found. + */ +static u8 +_scsih_scsi_lookup_find_by_target(struct MPT3SAS_ADAPTER *ioc, int id, + int channel) +{ + int smid; + struct scsi_cmnd *scmd; + + for (smid = 1; + smid <= ioc->shost->can_queue; smid++) { + scmd = mpt3sas_scsih_scsi_lookup_get(ioc, smid); + if (!scmd) + continue; + if (scmd->device->id == id && + scmd->device->channel == channel) + return 1; + } + return 0; +} + +/** + * _scsih_scsi_lookup_find_by_lun - search for matching channel:id:lun + * @ioc: per adapter object + * @id: target id + * @lun: lun number + * @channel: channel + * Context: This function will acquire ioc->scsi_lookup_lock. + * + * This will search for a matching channel:id:lun in the scsi_lookup array, + * returning 1 if found. + */ +static u8 +_scsih_scsi_lookup_find_by_lun(struct MPT3SAS_ADAPTER *ioc, int id, + unsigned int lun, int channel) +{ + int smid; + struct scsi_cmnd *scmd; + + for (smid = 1; smid <= ioc->shost->can_queue; smid++) { + + scmd = mpt3sas_scsih_scsi_lookup_get(ioc, smid); + if (!scmd) + continue; + if (scmd->device->id == id && + scmd->device->channel == channel && + scmd->device->lun == lun) + return 1; + } + return 0; +} + /** * mpt3sas_scsih_scsi_lookup_get - returns scmd entry * @ioc: per adapter object @@ -2704,6 +2764,8 @@ mpt3sas_scsih_clear_tm_flag(struct MPT3SAS_ADAPTER *ioc, u16 handle) * mpt3sas_scsih_issue_tm - main routine for sending tm requests * @ioc: per adapter struct * @handle: device handle + * @channel: the channel assigned by the OS + * @id: the id assigned by the OS * @lun: lun number * @type: MPI2_SCSITASKMGMT_TASKTYPE__XXX (defined in mpi2_init.h) * @smid_task: smid assigned to the task @@ -2720,8 +2782,9 @@ mpt3sas_scsih_clear_tm_flag(struct MPT3SAS_ADAPTER *ioc, u16 handle) * Return: SUCCESS or FAILED. */ int -mpt3sas_scsih_issue_tm(struct MPT3SAS_ADAPTER *ioc, u16 handle, u64 lun, - u8 type, u16 smid_task, u16 msix_task, u8 timeout, u8 tr_method) +mpt3sas_scsih_issue_tm(struct MPT3SAS_ADAPTER *ioc, u16 handle, uint channel, + uint id, u64 lun, u8 type, u16 smid_task, u16 msix_task, + u8 timeout, u8 tr_method) { Mpi2SCSITaskManagementRequest_t *mpi_request; Mpi2SCSITaskManagementReply_t *mpi_reply; @@ -2826,14 +2889,14 @@ out: } int mpt3sas_scsih_issue_locked_tm(struct MPT3SAS_ADAPTER *ioc, u16 handle, - u64 lun, u8 type, u16 smid_task, u16 msix_task, - u8 timeout, u8 tr_method) + uint channel, uint id, u64 lun, u8 type, u16 smid_task, + u16 msix_task, u8 timeout, u8 tr_method) { int ret; mutex_lock(&ioc->tm_cmds.mutex); - ret = mpt3sas_scsih_issue_tm(ioc, handle, lun, type, smid_task, - msix_task, timeout, tr_method); + ret = mpt3sas_scsih_issue_tm(ioc, handle, channel, id, lun, type, + smid_task, msix_task, timeout, tr_method); mutex_unlock(&ioc->tm_cmds.mutex); return ret; @@ -2980,7 +3043,8 @@ scsih_abort(struct scsi_cmnd *scmd) if (pcie_device && (!ioc->tm_custom_handling) && (!(mpt3sas_scsih_is_pcie_scsi_device(pcie_device->device_info)))) timeout = ioc->nvme_abort_timeout; - r = mpt3sas_scsih_issue_locked_tm(ioc, handle, scmd->device->lun, + r = mpt3sas_scsih_issue_locked_tm(ioc, handle, scmd->device->channel, + scmd->device->id, scmd->device->lun, MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK, st->smid, st->msix_io, timeout, 0); /* Command must be cleared after abort */ @@ -3056,7 +3120,8 @@ scsih_dev_reset(struct scsi_cmnd *scmd) } else tr_method = MPI2_SCSITASKMGMT_MSGFLAGS_LINK_RESET; - r = mpt3sas_scsih_issue_locked_tm(ioc, handle, scmd->device->lun, + r = mpt3sas_scsih_issue_locked_tm(ioc, handle, scmd->device->channel, + scmd->device->id, scmd->device->lun, MPI2_SCSITASKMGMT_TASKTYPE_LOGICAL_UNIT_RESET, 0, 0, tr_timeout, tr_method); /* Check for busy commands after reset */ @@ -3134,7 +3199,8 @@ scsih_target_reset(struct scsi_cmnd *scmd) tr_method = MPI26_SCSITASKMGMT_MSGFLAGS_PROTOCOL_LVL_RST_PCIE; } else tr_method = MPI2_SCSITASKMGMT_MSGFLAGS_LINK_RESET; - r = mpt3sas_scsih_issue_locked_tm(ioc, handle, 0, + r = mpt3sas_scsih_issue_locked_tm(ioc, handle, scmd->device->channel, + scmd->device->id, 0, MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET, 0, 0, tr_timeout, tr_method); /* Check for busy commands after reset */ @@ -7530,7 +7596,7 @@ _scsih_sas_broadcast_primitive_event(struct MPT3SAS_ADAPTER *ioc, goto out; spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags); - r = mpt3sas_scsih_issue_tm(ioc, handle, lun, + r = mpt3sas_scsih_issue_tm(ioc, handle, 0, 0, lun, MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK, st->smid, st->msix_io, 30, 0); if (r == FAILED) { @@ -7571,9 +7637,9 @@ _scsih_sas_broadcast_primitive_event(struct MPT3SAS_ADAPTER *ioc, if (ioc->shost_recovery) goto out_no_lock; - r = mpt3sas_scsih_issue_tm(ioc, handle, sdev->lun, - MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK, st->smid, - st->msix_io, 30, 0); + r = mpt3sas_scsih_issue_tm(ioc, handle, sdev->channel, sdev->id, + sdev->lun, MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK, + st->smid, st->msix_io, 30, 0); if (r == FAILED || st->cb_idx != 0xFF) { sdev_printk(KERN_WARNING, sdev, "mpt3sas_scsih_issue_tm: ABORT_TASK: FAILED : "

[5/7] mpt3sas: Added helper functions to check any cmd is outstanding on Target and LUN.

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