6802 lines
196 KiB
C
6802 lines
196 KiB
C
/*******************************************************************
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* This file is part of the Emulex Linux Device Driver for *
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* Fibre Channel Host Bus Adapters. *
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* Copyright (C) 2017-2023 Broadcom. All Rights Reserved. The term *
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* “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. *
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* Copyright (C) 2004-2016 Emulex. All rights reserved. *
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* EMULEX and SLI are trademarks of Emulex. *
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* www.broadcom.com *
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* Portions Copyright (C) 2004-2005 Christoph Hellwig *
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* *
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* This program is free software; you can redistribute it and/or *
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* modify it under the terms of version 2 of the GNU General *
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* Public License as published by the Free Software Foundation. *
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* This program is distributed in the hope that it will be useful. *
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* ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
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* WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
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* FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
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* DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
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* TO BE LEGALLY INVALID. See the GNU General Public License for *
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* more details, a copy of which can be found in the file COPYING *
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* included with this package. *
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*******************************************************************/
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#include <linux/pci.h>
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#include <linux/slab.h>
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#include <linux/interrupt.h>
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#include <linux/export.h>
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#include <linux/delay.h>
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#include <asm/unaligned.h>
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#include <linux/t10-pi.h>
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#include <linux/crc-t10dif.h>
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#include <linux/blk-cgroup.h>
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#include <net/checksum.h>
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#include <scsi/scsi.h>
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#include <scsi/scsi_device.h>
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#include <scsi/scsi_eh.h>
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#include <scsi/scsi_host.h>
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#include <scsi/scsi_tcq.h>
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#include <scsi/scsi_transport_fc.h>
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#include "lpfc_version.h"
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#include "lpfc_hw4.h"
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#include "lpfc_hw.h"
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#include "lpfc_sli.h"
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#include "lpfc_sli4.h"
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#include "lpfc_nl.h"
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#include "lpfc_disc.h"
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#include "lpfc.h"
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#include "lpfc_scsi.h"
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#include "lpfc_logmsg.h"
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#include "lpfc_crtn.h"
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#include "lpfc_vport.h"
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#define LPFC_RESET_WAIT 2
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#define LPFC_ABORT_WAIT 2
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static char *dif_op_str[] = {
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"PROT_NORMAL",
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"PROT_READ_INSERT",
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"PROT_WRITE_STRIP",
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"PROT_READ_STRIP",
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"PROT_WRITE_INSERT",
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"PROT_READ_PASS",
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"PROT_WRITE_PASS",
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};
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struct scsi_dif_tuple {
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__be16 guard_tag; /* Checksum */
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__be16 app_tag; /* Opaque storage */
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__be32 ref_tag; /* Target LBA or indirect LBA */
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};
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static struct lpfc_rport_data *
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lpfc_rport_data_from_scsi_device(struct scsi_device *sdev)
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{
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struct lpfc_vport *vport = (struct lpfc_vport *)sdev->host->hostdata;
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if (vport->phba->cfg_fof)
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return ((struct lpfc_device_data *)sdev->hostdata)->rport_data;
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else
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return (struct lpfc_rport_data *)sdev->hostdata;
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}
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static void
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lpfc_release_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_io_buf *psb);
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static void
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lpfc_release_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_io_buf *psb);
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static int
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lpfc_prot_group_type(struct lpfc_hba *phba, struct scsi_cmnd *sc);
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/**
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* lpfc_sli4_set_rsp_sgl_last - Set the last bit in the response sge.
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* @phba: Pointer to HBA object.
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* @lpfc_cmd: lpfc scsi command object pointer.
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*
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* This function is called from the lpfc_prep_task_mgmt_cmd function to
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* set the last bit in the response sge entry.
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**/
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static void
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lpfc_sli4_set_rsp_sgl_last(struct lpfc_hba *phba,
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struct lpfc_io_buf *lpfc_cmd)
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{
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struct sli4_sge *sgl = (struct sli4_sge *)lpfc_cmd->dma_sgl;
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if (sgl) {
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sgl += 1;
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sgl->word2 = le32_to_cpu(sgl->word2);
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bf_set(lpfc_sli4_sge_last, sgl, 1);
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sgl->word2 = cpu_to_le32(sgl->word2);
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}
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}
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/**
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* lpfc_rampdown_queue_depth - Post RAMP_DOWN_QUEUE event to worker thread
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* @phba: The Hba for which this call is being executed.
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*
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* This routine is called when there is resource error in driver or firmware.
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* This routine posts WORKER_RAMP_DOWN_QUEUE event for @phba. This routine
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* posts at most 1 event each second. This routine wakes up worker thread of
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* @phba to process WORKER_RAM_DOWN_EVENT event.
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*
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* This routine should be called with no lock held.
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**/
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void
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lpfc_rampdown_queue_depth(struct lpfc_hba *phba)
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{
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unsigned long flags;
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uint32_t evt_posted;
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unsigned long expires;
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spin_lock_irqsave(&phba->hbalock, flags);
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atomic_inc(&phba->num_rsrc_err);
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phba->last_rsrc_error_time = jiffies;
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expires = phba->last_ramp_down_time + QUEUE_RAMP_DOWN_INTERVAL;
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if (time_after(expires, jiffies)) {
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spin_unlock_irqrestore(&phba->hbalock, flags);
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return;
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}
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phba->last_ramp_down_time = jiffies;
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spin_unlock_irqrestore(&phba->hbalock, flags);
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spin_lock_irqsave(&phba->pport->work_port_lock, flags);
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evt_posted = phba->pport->work_port_events & WORKER_RAMP_DOWN_QUEUE;
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if (!evt_posted)
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phba->pport->work_port_events |= WORKER_RAMP_DOWN_QUEUE;
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spin_unlock_irqrestore(&phba->pport->work_port_lock, flags);
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if (!evt_posted)
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lpfc_worker_wake_up(phba);
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return;
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}
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/**
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* lpfc_ramp_down_queue_handler - WORKER_RAMP_DOWN_QUEUE event handler
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* @phba: The Hba for which this call is being executed.
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*
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* This routine is called to process WORKER_RAMP_DOWN_QUEUE event for worker
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* thread.This routine reduces queue depth for all scsi device on each vport
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* associated with @phba.
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**/
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void
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lpfc_ramp_down_queue_handler(struct lpfc_hba *phba)
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{
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struct lpfc_vport **vports;
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struct Scsi_Host *shost;
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struct scsi_device *sdev;
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unsigned long new_queue_depth;
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unsigned long num_rsrc_err, num_cmd_success;
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int i;
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num_rsrc_err = atomic_read(&phba->num_rsrc_err);
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num_cmd_success = atomic_read(&phba->num_cmd_success);
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/*
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* The error and success command counters are global per
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* driver instance. If another handler has already
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* operated on this error event, just exit.
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*/
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if (num_rsrc_err == 0)
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return;
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vports = lpfc_create_vport_work_array(phba);
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if (vports != NULL)
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for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
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shost = lpfc_shost_from_vport(vports[i]);
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shost_for_each_device(sdev, shost) {
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new_queue_depth =
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sdev->queue_depth * num_rsrc_err /
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(num_rsrc_err + num_cmd_success);
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if (!new_queue_depth)
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new_queue_depth = sdev->queue_depth - 1;
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else
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new_queue_depth = sdev->queue_depth -
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new_queue_depth;
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scsi_change_queue_depth(sdev, new_queue_depth);
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}
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}
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lpfc_destroy_vport_work_array(phba, vports);
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atomic_set(&phba->num_rsrc_err, 0);
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atomic_set(&phba->num_cmd_success, 0);
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}
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/**
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* lpfc_scsi_dev_block - set all scsi hosts to block state
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* @phba: Pointer to HBA context object.
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*
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* This function walks vport list and set each SCSI host to block state
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* by invoking fc_remote_port_delete() routine. This function is invoked
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* with EEH when device's PCI slot has been permanently disabled.
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**/
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void
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lpfc_scsi_dev_block(struct lpfc_hba *phba)
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{
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struct lpfc_vport **vports;
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struct Scsi_Host *shost;
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struct scsi_device *sdev;
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struct fc_rport *rport;
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int i;
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vports = lpfc_create_vport_work_array(phba);
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if (vports != NULL)
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for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
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shost = lpfc_shost_from_vport(vports[i]);
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shost_for_each_device(sdev, shost) {
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rport = starget_to_rport(scsi_target(sdev));
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fc_remote_port_delete(rport);
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}
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}
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lpfc_destroy_vport_work_array(phba, vports);
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}
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/**
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* lpfc_new_scsi_buf_s3 - Scsi buffer allocator for HBA with SLI3 IF spec
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* @vport: The virtual port for which this call being executed.
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* @num_to_alloc: The requested number of buffers to allocate.
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*
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* This routine allocates a scsi buffer for device with SLI-3 interface spec,
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* the scsi buffer contains all the necessary information needed to initiate
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* a SCSI I/O. The non-DMAable buffer region contains information to build
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* the IOCB. The DMAable region contains memory for the FCP CMND, FCP RSP,
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* and the initial BPL. In addition to allocating memory, the FCP CMND and
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* FCP RSP BDEs are setup in the BPL and the BPL BDE is setup in the IOCB.
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*
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* Return codes:
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* int - number of scsi buffers that were allocated.
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* 0 = failure, less than num_to_alloc is a partial failure.
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**/
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static int
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lpfc_new_scsi_buf_s3(struct lpfc_vport *vport, int num_to_alloc)
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{
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struct lpfc_hba *phba = vport->phba;
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struct lpfc_io_buf *psb;
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struct ulp_bde64 *bpl;
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IOCB_t *iocb;
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dma_addr_t pdma_phys_fcp_cmd;
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dma_addr_t pdma_phys_fcp_rsp;
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dma_addr_t pdma_phys_sgl;
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uint16_t iotag;
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int bcnt, bpl_size;
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bpl_size = phba->cfg_sg_dma_buf_size -
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(sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp));
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lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
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"9067 ALLOC %d scsi_bufs: %d (%d + %d + %d)\n",
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num_to_alloc, phba->cfg_sg_dma_buf_size,
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(int)sizeof(struct fcp_cmnd),
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(int)sizeof(struct fcp_rsp), bpl_size);
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for (bcnt = 0; bcnt < num_to_alloc; bcnt++) {
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psb = kzalloc(sizeof(struct lpfc_io_buf), GFP_KERNEL);
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if (!psb)
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break;
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/*
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* Get memory from the pci pool to map the virt space to pci
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* bus space for an I/O. The DMA buffer includes space for the
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* struct fcp_cmnd, struct fcp_rsp and the number of bde's
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* necessary to support the sg_tablesize.
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*/
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psb->data = dma_pool_zalloc(phba->lpfc_sg_dma_buf_pool,
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GFP_KERNEL, &psb->dma_handle);
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if (!psb->data) {
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kfree(psb);
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break;
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}
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/* Allocate iotag for psb->cur_iocbq. */
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iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq);
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if (iotag == 0) {
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dma_pool_free(phba->lpfc_sg_dma_buf_pool,
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psb->data, psb->dma_handle);
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kfree(psb);
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break;
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}
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psb->cur_iocbq.cmd_flag |= LPFC_IO_FCP;
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psb->fcp_cmnd = psb->data;
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psb->fcp_rsp = psb->data + sizeof(struct fcp_cmnd);
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psb->dma_sgl = psb->data + sizeof(struct fcp_cmnd) +
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sizeof(struct fcp_rsp);
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/* Initialize local short-hand pointers. */
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bpl = (struct ulp_bde64 *)psb->dma_sgl;
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pdma_phys_fcp_cmd = psb->dma_handle;
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pdma_phys_fcp_rsp = psb->dma_handle + sizeof(struct fcp_cmnd);
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pdma_phys_sgl = psb->dma_handle + sizeof(struct fcp_cmnd) +
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sizeof(struct fcp_rsp);
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/*
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* The first two bdes are the FCP_CMD and FCP_RSP. The balance
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* are sg list bdes. Initialize the first two and leave the
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* rest for queuecommand.
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*/
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bpl[0].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_cmd));
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bpl[0].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_cmd));
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bpl[0].tus.f.bdeSize = sizeof(struct fcp_cmnd);
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bpl[0].tus.f.bdeFlags = BUFF_TYPE_BDE_64;
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bpl[0].tus.w = le32_to_cpu(bpl[0].tus.w);
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/* Setup the physical region for the FCP RSP */
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bpl[1].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_rsp));
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bpl[1].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_rsp));
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bpl[1].tus.f.bdeSize = sizeof(struct fcp_rsp);
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bpl[1].tus.f.bdeFlags = BUFF_TYPE_BDE_64;
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bpl[1].tus.w = le32_to_cpu(bpl[1].tus.w);
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/*
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* Since the IOCB for the FCP I/O is built into this
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* lpfc_scsi_buf, initialize it with all known data now.
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*/
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iocb = &psb->cur_iocbq.iocb;
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iocb->un.fcpi64.bdl.ulpIoTag32 = 0;
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if ((phba->sli_rev == 3) &&
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!(phba->sli3_options & LPFC_SLI3_BG_ENABLED)) {
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/* fill in immediate fcp command BDE */
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iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDE_IMMED;
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iocb->un.fcpi64.bdl.bdeSize = sizeof(struct fcp_cmnd);
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iocb->un.fcpi64.bdl.addrLow = offsetof(IOCB_t,
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unsli3.fcp_ext.icd);
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iocb->un.fcpi64.bdl.addrHigh = 0;
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iocb->ulpBdeCount = 0;
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iocb->ulpLe = 0;
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/* fill in response BDE */
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iocb->unsli3.fcp_ext.rbde.tus.f.bdeFlags =
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BUFF_TYPE_BDE_64;
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iocb->unsli3.fcp_ext.rbde.tus.f.bdeSize =
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sizeof(struct fcp_rsp);
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iocb->unsli3.fcp_ext.rbde.addrLow =
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putPaddrLow(pdma_phys_fcp_rsp);
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iocb->unsli3.fcp_ext.rbde.addrHigh =
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putPaddrHigh(pdma_phys_fcp_rsp);
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} else {
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iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
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iocb->un.fcpi64.bdl.bdeSize =
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(2 * sizeof(struct ulp_bde64));
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iocb->un.fcpi64.bdl.addrLow =
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putPaddrLow(pdma_phys_sgl);
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iocb->un.fcpi64.bdl.addrHigh =
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putPaddrHigh(pdma_phys_sgl);
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iocb->ulpBdeCount = 1;
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iocb->ulpLe = 1;
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}
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iocb->ulpClass = CLASS3;
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psb->status = IOSTAT_SUCCESS;
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/* Put it back into the SCSI buffer list */
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psb->cur_iocbq.io_buf = psb;
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spin_lock_init(&psb->buf_lock);
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lpfc_release_scsi_buf_s3(phba, psb);
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}
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return bcnt;
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}
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/**
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* lpfc_sli4_vport_delete_fcp_xri_aborted -Remove all ndlp references for vport
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* @vport: pointer to lpfc vport data structure.
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*
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* This routine is invoked by the vport cleanup for deletions and the cleanup
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* for an ndlp on removal.
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**/
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void
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lpfc_sli4_vport_delete_fcp_xri_aborted(struct lpfc_vport *vport)
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{
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struct lpfc_hba *phba = vport->phba;
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struct lpfc_io_buf *psb, *next_psb;
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struct lpfc_sli4_hdw_queue *qp;
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unsigned long iflag = 0;
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int idx;
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if (!(vport->cfg_enable_fc4_type & LPFC_ENABLE_FCP))
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return;
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spin_lock_irqsave(&phba->hbalock, iflag);
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for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
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qp = &phba->sli4_hba.hdwq[idx];
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spin_lock(&qp->abts_io_buf_list_lock);
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list_for_each_entry_safe(psb, next_psb,
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&qp->lpfc_abts_io_buf_list, list) {
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if (psb->cur_iocbq.cmd_flag & LPFC_IO_NVME)
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continue;
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if (psb->rdata && psb->rdata->pnode &&
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psb->rdata->pnode->vport == vport)
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psb->rdata = NULL;
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}
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spin_unlock(&qp->abts_io_buf_list_lock);
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}
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spin_unlock_irqrestore(&phba->hbalock, iflag);
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}
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/**
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* lpfc_sli4_io_xri_aborted - Fast-path process of fcp xri abort
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* @phba: pointer to lpfc hba data structure.
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* @axri: pointer to the fcp xri abort wcqe structure.
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* @idx: index into hdwq
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*
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* This routine is invoked by the worker thread to process a SLI4 fast-path
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* FCP or NVME aborted xri.
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**/
|
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void
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lpfc_sli4_io_xri_aborted(struct lpfc_hba *phba,
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struct sli4_wcqe_xri_aborted *axri, int idx)
|
|
{
|
|
u16 xri = 0;
|
|
u16 rxid = 0;
|
|
struct lpfc_io_buf *psb, *next_psb;
|
|
struct lpfc_sli4_hdw_queue *qp;
|
|
unsigned long iflag = 0;
|
|
struct lpfc_iocbq *iocbq;
|
|
int i;
|
|
struct lpfc_nodelist *ndlp;
|
|
int rrq_empty = 0;
|
|
struct lpfc_sli_ring *pring = phba->sli4_hba.els_wq->pring;
|
|
struct scsi_cmnd *cmd;
|
|
int offline = 0;
|
|
|
|
if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP))
|
|
return;
|
|
offline = pci_channel_offline(phba->pcidev);
|
|
if (!offline) {
|
|
xri = bf_get(lpfc_wcqe_xa_xri, axri);
|
|
rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri);
|
|
}
|
|
qp = &phba->sli4_hba.hdwq[idx];
|
|
spin_lock_irqsave(&phba->hbalock, iflag);
|
|
spin_lock(&qp->abts_io_buf_list_lock);
|
|
list_for_each_entry_safe(psb, next_psb,
|
|
&qp->lpfc_abts_io_buf_list, list) {
|
|
if (offline)
|
|
xri = psb->cur_iocbq.sli4_xritag;
|
|
if (psb->cur_iocbq.sli4_xritag == xri) {
|
|
list_del_init(&psb->list);
|
|
psb->flags &= ~LPFC_SBUF_XBUSY;
|
|
psb->status = IOSTAT_SUCCESS;
|
|
if (psb->cur_iocbq.cmd_flag & LPFC_IO_NVME) {
|
|
qp->abts_nvme_io_bufs--;
|
|
spin_unlock(&qp->abts_io_buf_list_lock);
|
|
spin_unlock_irqrestore(&phba->hbalock, iflag);
|
|
if (!offline) {
|
|
lpfc_sli4_nvme_xri_aborted(phba, axri,
|
|
psb);
|
|
return;
|
|
}
|
|
lpfc_sli4_nvme_pci_offline_aborted(phba, psb);
|
|
spin_lock_irqsave(&phba->hbalock, iflag);
|
|
spin_lock(&qp->abts_io_buf_list_lock);
|
|
continue;
|
|
}
|
|
qp->abts_scsi_io_bufs--;
|
|
spin_unlock(&qp->abts_io_buf_list_lock);
|
|
|
|
if (psb->rdata && psb->rdata->pnode)
|
|
ndlp = psb->rdata->pnode;
|
|
else
|
|
ndlp = NULL;
|
|
|
|
rrq_empty = list_empty(&phba->active_rrq_list);
|
|
spin_unlock_irqrestore(&phba->hbalock, iflag);
|
|
if (ndlp && !offline) {
|
|
lpfc_set_rrq_active(phba, ndlp,
|
|
psb->cur_iocbq.sli4_lxritag, rxid, 1);
|
|
lpfc_sli4_abts_err_handler(phba, ndlp, axri);
|
|
}
|
|
|
|
if (phba->cfg_fcp_wait_abts_rsp || offline) {
|
|
spin_lock_irqsave(&psb->buf_lock, iflag);
|
|
cmd = psb->pCmd;
|
|
psb->pCmd = NULL;
|
|
spin_unlock_irqrestore(&psb->buf_lock, iflag);
|
|
|
|
/* The sdev is not guaranteed to be valid post
|
|
* scsi_done upcall.
|
|
*/
|
|
if (cmd)
|
|
scsi_done(cmd);
|
|
|
|
/*
|
|
* We expect there is an abort thread waiting
|
|
* for command completion wake up the thread.
|
|
*/
|
|
spin_lock_irqsave(&psb->buf_lock, iflag);
|
|
psb->cur_iocbq.cmd_flag &=
|
|
~LPFC_DRIVER_ABORTED;
|
|
if (psb->waitq)
|
|
wake_up(psb->waitq);
|
|
spin_unlock_irqrestore(&psb->buf_lock, iflag);
|
|
}
|
|
|
|
lpfc_release_scsi_buf_s4(phba, psb);
|
|
if (rrq_empty)
|
|
lpfc_worker_wake_up(phba);
|
|
if (!offline)
|
|
return;
|
|
spin_lock_irqsave(&phba->hbalock, iflag);
|
|
spin_lock(&qp->abts_io_buf_list_lock);
|
|
continue;
|
|
}
|
|
}
|
|
spin_unlock(&qp->abts_io_buf_list_lock);
|
|
if (!offline) {
|
|
for (i = 1; i <= phba->sli.last_iotag; i++) {
|
|
iocbq = phba->sli.iocbq_lookup[i];
|
|
|
|
if (!(iocbq->cmd_flag & LPFC_IO_FCP) ||
|
|
(iocbq->cmd_flag & LPFC_IO_LIBDFC))
|
|
continue;
|
|
if (iocbq->sli4_xritag != xri)
|
|
continue;
|
|
psb = container_of(iocbq, struct lpfc_io_buf, cur_iocbq);
|
|
psb->flags &= ~LPFC_SBUF_XBUSY;
|
|
spin_unlock_irqrestore(&phba->hbalock, iflag);
|
|
if (!list_empty(&pring->txq))
|
|
lpfc_worker_wake_up(phba);
|
|
return;
|
|
}
|
|
}
|
|
spin_unlock_irqrestore(&phba->hbalock, iflag);
|
|
}
|
|
|
|
/**
|
|
* lpfc_get_scsi_buf_s3 - Get a scsi buffer from lpfc_scsi_buf_list of the HBA
|
|
* @phba: The HBA for which this call is being executed.
|
|
* @ndlp: pointer to a node-list data structure.
|
|
* @cmnd: Pointer to scsi_cmnd data structure.
|
|
*
|
|
* This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list
|
|
* and returns to caller.
|
|
*
|
|
* Return codes:
|
|
* NULL - Error
|
|
* Pointer to lpfc_scsi_buf - Success
|
|
**/
|
|
static struct lpfc_io_buf *
|
|
lpfc_get_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp,
|
|
struct scsi_cmnd *cmnd)
|
|
{
|
|
struct lpfc_io_buf *lpfc_cmd = NULL;
|
|
struct list_head *scsi_buf_list_get = &phba->lpfc_scsi_buf_list_get;
|
|
unsigned long iflag = 0;
|
|
|
|
spin_lock_irqsave(&phba->scsi_buf_list_get_lock, iflag);
|
|
list_remove_head(scsi_buf_list_get, lpfc_cmd, struct lpfc_io_buf,
|
|
list);
|
|
if (!lpfc_cmd) {
|
|
spin_lock(&phba->scsi_buf_list_put_lock);
|
|
list_splice(&phba->lpfc_scsi_buf_list_put,
|
|
&phba->lpfc_scsi_buf_list_get);
|
|
INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list_put);
|
|
list_remove_head(scsi_buf_list_get, lpfc_cmd,
|
|
struct lpfc_io_buf, list);
|
|
spin_unlock(&phba->scsi_buf_list_put_lock);
|
|
}
|
|
spin_unlock_irqrestore(&phba->scsi_buf_list_get_lock, iflag);
|
|
|
|
if (lpfc_ndlp_check_qdepth(phba, ndlp) && lpfc_cmd) {
|
|
atomic_inc(&ndlp->cmd_pending);
|
|
lpfc_cmd->flags |= LPFC_SBUF_BUMP_QDEPTH;
|
|
}
|
|
return lpfc_cmd;
|
|
}
|
|
/**
|
|
* lpfc_get_scsi_buf_s4 - Get a scsi buffer from io_buf_list of the HBA
|
|
* @phba: The HBA for which this call is being executed.
|
|
* @ndlp: pointer to a node-list data structure.
|
|
* @cmnd: Pointer to scsi_cmnd data structure.
|
|
*
|
|
* This routine removes a scsi buffer from head of @hdwq io_buf_list
|
|
* and returns to caller.
|
|
*
|
|
* Return codes:
|
|
* NULL - Error
|
|
* Pointer to lpfc_scsi_buf - Success
|
|
**/
|
|
static struct lpfc_io_buf *
|
|
lpfc_get_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp,
|
|
struct scsi_cmnd *cmnd)
|
|
{
|
|
struct lpfc_io_buf *lpfc_cmd;
|
|
struct lpfc_sli4_hdw_queue *qp;
|
|
struct sli4_sge *sgl;
|
|
dma_addr_t pdma_phys_fcp_rsp;
|
|
dma_addr_t pdma_phys_fcp_cmd;
|
|
uint32_t cpu, idx;
|
|
int tag;
|
|
struct fcp_cmd_rsp_buf *tmp = NULL;
|
|
|
|
cpu = raw_smp_processor_id();
|
|
if (cmnd && phba->cfg_fcp_io_sched == LPFC_FCP_SCHED_BY_HDWQ) {
|
|
tag = blk_mq_unique_tag(scsi_cmd_to_rq(cmnd));
|
|
idx = blk_mq_unique_tag_to_hwq(tag);
|
|
} else {
|
|
idx = phba->sli4_hba.cpu_map[cpu].hdwq;
|
|
}
|
|
|
|
lpfc_cmd = lpfc_get_io_buf(phba, ndlp, idx,
|
|
!phba->cfg_xri_rebalancing);
|
|
if (!lpfc_cmd) {
|
|
qp = &phba->sli4_hba.hdwq[idx];
|
|
qp->empty_io_bufs++;
|
|
return NULL;
|
|
}
|
|
|
|
/* Setup key fields in buffer that may have been changed
|
|
* if other protocols used this buffer.
|
|
*/
|
|
lpfc_cmd->cur_iocbq.cmd_flag = LPFC_IO_FCP;
|
|
lpfc_cmd->prot_seg_cnt = 0;
|
|
lpfc_cmd->seg_cnt = 0;
|
|
lpfc_cmd->timeout = 0;
|
|
lpfc_cmd->flags = 0;
|
|
lpfc_cmd->start_time = jiffies;
|
|
lpfc_cmd->waitq = NULL;
|
|
lpfc_cmd->cpu = cpu;
|
|
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
|
|
lpfc_cmd->prot_data_type = 0;
|
|
#endif
|
|
tmp = lpfc_get_cmd_rsp_buf_per_hdwq(phba, lpfc_cmd);
|
|
if (!tmp) {
|
|
lpfc_release_io_buf(phba, lpfc_cmd, lpfc_cmd->hdwq);
|
|
return NULL;
|
|
}
|
|
|
|
lpfc_cmd->fcp_cmnd = tmp->fcp_cmnd;
|
|
lpfc_cmd->fcp_rsp = tmp->fcp_rsp;
|
|
|
|
/*
|
|
* The first two SGEs are the FCP_CMD and FCP_RSP.
|
|
* The balance are sg list bdes. Initialize the
|
|
* first two and leave the rest for queuecommand.
|
|
*/
|
|
sgl = (struct sli4_sge *)lpfc_cmd->dma_sgl;
|
|
pdma_phys_fcp_cmd = tmp->fcp_cmd_rsp_dma_handle;
|
|
sgl->addr_hi = cpu_to_le32(putPaddrHigh(pdma_phys_fcp_cmd));
|
|
sgl->addr_lo = cpu_to_le32(putPaddrLow(pdma_phys_fcp_cmd));
|
|
sgl->word2 = le32_to_cpu(sgl->word2);
|
|
bf_set(lpfc_sli4_sge_last, sgl, 0);
|
|
sgl->word2 = cpu_to_le32(sgl->word2);
|
|
sgl->sge_len = cpu_to_le32(sizeof(struct fcp_cmnd));
|
|
sgl++;
|
|
|
|
/* Setup the physical region for the FCP RSP */
|
|
pdma_phys_fcp_rsp = pdma_phys_fcp_cmd + sizeof(struct fcp_cmnd);
|
|
sgl->addr_hi = cpu_to_le32(putPaddrHigh(pdma_phys_fcp_rsp));
|
|
sgl->addr_lo = cpu_to_le32(putPaddrLow(pdma_phys_fcp_rsp));
|
|
sgl->word2 = le32_to_cpu(sgl->word2);
|
|
bf_set(lpfc_sli4_sge_last, sgl, 1);
|
|
sgl->word2 = cpu_to_le32(sgl->word2);
|
|
sgl->sge_len = cpu_to_le32(sizeof(struct fcp_rsp));
|
|
|
|
if (lpfc_ndlp_check_qdepth(phba, ndlp)) {
|
|
atomic_inc(&ndlp->cmd_pending);
|
|
lpfc_cmd->flags |= LPFC_SBUF_BUMP_QDEPTH;
|
|
}
|
|
return lpfc_cmd;
|
|
}
|
|
/**
|
|
* lpfc_get_scsi_buf - Get a scsi buffer from lpfc_scsi_buf_list of the HBA
|
|
* @phba: The HBA for which this call is being executed.
|
|
* @ndlp: pointer to a node-list data structure.
|
|
* @cmnd: Pointer to scsi_cmnd data structure.
|
|
*
|
|
* This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list
|
|
* and returns to caller.
|
|
*
|
|
* Return codes:
|
|
* NULL - Error
|
|
* Pointer to lpfc_scsi_buf - Success
|
|
**/
|
|
static struct lpfc_io_buf*
|
|
lpfc_get_scsi_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp,
|
|
struct scsi_cmnd *cmnd)
|
|
{
|
|
return phba->lpfc_get_scsi_buf(phba, ndlp, cmnd);
|
|
}
|
|
|
|
/**
|
|
* lpfc_release_scsi_buf_s3 - Return a scsi buffer back to hba scsi buf list
|
|
* @phba: The Hba for which this call is being executed.
|
|
* @psb: The scsi buffer which is being released.
|
|
*
|
|
* This routine releases @psb scsi buffer by adding it to tail of @phba
|
|
* lpfc_scsi_buf_list list.
|
|
**/
|
|
static void
|
|
lpfc_release_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_io_buf *psb)
|
|
{
|
|
unsigned long iflag = 0;
|
|
|
|
psb->seg_cnt = 0;
|
|
psb->prot_seg_cnt = 0;
|
|
|
|
spin_lock_irqsave(&phba->scsi_buf_list_put_lock, iflag);
|
|
psb->pCmd = NULL;
|
|
psb->cur_iocbq.cmd_flag = LPFC_IO_FCP;
|
|
list_add_tail(&psb->list, &phba->lpfc_scsi_buf_list_put);
|
|
spin_unlock_irqrestore(&phba->scsi_buf_list_put_lock, iflag);
|
|
}
|
|
|
|
/**
|
|
* lpfc_release_scsi_buf_s4: Return a scsi buffer back to hba scsi buf list.
|
|
* @phba: The Hba for which this call is being executed.
|
|
* @psb: The scsi buffer which is being released.
|
|
*
|
|
* This routine releases @psb scsi buffer by adding it to tail of @hdwq
|
|
* io_buf_list list. For SLI4 XRI's are tied to the scsi buffer
|
|
* and cannot be reused for at least RA_TOV amount of time if it was
|
|
* aborted.
|
|
**/
|
|
static void
|
|
lpfc_release_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_io_buf *psb)
|
|
{
|
|
struct lpfc_sli4_hdw_queue *qp;
|
|
unsigned long iflag = 0;
|
|
|
|
psb->seg_cnt = 0;
|
|
psb->prot_seg_cnt = 0;
|
|
|
|
qp = psb->hdwq;
|
|
if (psb->flags & LPFC_SBUF_XBUSY) {
|
|
spin_lock_irqsave(&qp->abts_io_buf_list_lock, iflag);
|
|
if (!phba->cfg_fcp_wait_abts_rsp)
|
|
psb->pCmd = NULL;
|
|
list_add_tail(&psb->list, &qp->lpfc_abts_io_buf_list);
|
|
qp->abts_scsi_io_bufs++;
|
|
spin_unlock_irqrestore(&qp->abts_io_buf_list_lock, iflag);
|
|
} else {
|
|
lpfc_release_io_buf(phba, (struct lpfc_io_buf *)psb, qp);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* lpfc_release_scsi_buf: Return a scsi buffer back to hba scsi buf list.
|
|
* @phba: The Hba for which this call is being executed.
|
|
* @psb: The scsi buffer which is being released.
|
|
*
|
|
* This routine releases @psb scsi buffer by adding it to tail of @phba
|
|
* lpfc_scsi_buf_list list.
|
|
**/
|
|
static void
|
|
lpfc_release_scsi_buf(struct lpfc_hba *phba, struct lpfc_io_buf *psb)
|
|
{
|
|
if ((psb->flags & LPFC_SBUF_BUMP_QDEPTH) && psb->ndlp)
|
|
atomic_dec(&psb->ndlp->cmd_pending);
|
|
|
|
psb->flags &= ~LPFC_SBUF_BUMP_QDEPTH;
|
|
phba->lpfc_release_scsi_buf(phba, psb);
|
|
}
|
|
|
|
/**
|
|
* lpfc_fcpcmd_to_iocb - copy the fcp_cmd data into the IOCB
|
|
* @data: A pointer to the immediate command data portion of the IOCB.
|
|
* @fcp_cmnd: The FCP Command that is provided by the SCSI layer.
|
|
*
|
|
* The routine copies the entire FCP command from @fcp_cmnd to @data while
|
|
* byte swapping the data to big endian format for transmission on the wire.
|
|
**/
|
|
static void
|
|
lpfc_fcpcmd_to_iocb(u8 *data, struct fcp_cmnd *fcp_cmnd)
|
|
{
|
|
int i, j;
|
|
|
|
for (i = 0, j = 0; i < sizeof(struct fcp_cmnd);
|
|
i += sizeof(uint32_t), j++) {
|
|
((uint32_t *)data)[j] = cpu_to_be32(((uint32_t *)fcp_cmnd)[j]);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* lpfc_scsi_prep_dma_buf_s3 - DMA mapping for scsi buffer to SLI3 IF spec
|
|
* @phba: The Hba for which this call is being executed.
|
|
* @lpfc_cmd: The scsi buffer which is going to be mapped.
|
|
*
|
|
* This routine does the pci dma mapping for scatter-gather list of scsi cmnd
|
|
* field of @lpfc_cmd for device with SLI-3 interface spec. This routine scans
|
|
* through sg elements and format the bde. This routine also initializes all
|
|
* IOCB fields which are dependent on scsi command request buffer.
|
|
*
|
|
* Return codes:
|
|
* 1 - Error
|
|
* 0 - Success
|
|
**/
|
|
static int
|
|
lpfc_scsi_prep_dma_buf_s3(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd)
|
|
{
|
|
struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
|
|
struct scatterlist *sgel = NULL;
|
|
struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
|
|
struct ulp_bde64 *bpl = (struct ulp_bde64 *)lpfc_cmd->dma_sgl;
|
|
struct lpfc_iocbq *iocbq = &lpfc_cmd->cur_iocbq;
|
|
IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
|
|
struct ulp_bde64 *data_bde = iocb_cmd->unsli3.fcp_ext.dbde;
|
|
dma_addr_t physaddr;
|
|
uint32_t num_bde = 0;
|
|
int nseg, datadir = scsi_cmnd->sc_data_direction;
|
|
|
|
/*
|
|
* There are three possibilities here - use scatter-gather segment, use
|
|
* the single mapping, or neither. Start the lpfc command prep by
|
|
* bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first
|
|
* data bde entry.
|
|
*/
|
|
bpl += 2;
|
|
if (scsi_sg_count(scsi_cmnd)) {
|
|
/*
|
|
* The driver stores the segment count returned from dma_map_sg
|
|
* because this a count of dma-mappings used to map the use_sg
|
|
* pages. They are not guaranteed to be the same for those
|
|
* architectures that implement an IOMMU.
|
|
*/
|
|
|
|
nseg = dma_map_sg(&phba->pcidev->dev, scsi_sglist(scsi_cmnd),
|
|
scsi_sg_count(scsi_cmnd), datadir);
|
|
if (unlikely(!nseg))
|
|
return 1;
|
|
|
|
lpfc_cmd->seg_cnt = nseg;
|
|
if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) {
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
|
|
"9064 BLKGRD: %s: Too many sg segments"
|
|
" from dma_map_sg. Config %d, seg_cnt"
|
|
" %d\n", __func__, phba->cfg_sg_seg_cnt,
|
|
lpfc_cmd->seg_cnt);
|
|
WARN_ON_ONCE(lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt);
|
|
lpfc_cmd->seg_cnt = 0;
|
|
scsi_dma_unmap(scsi_cmnd);
|
|
return 2;
|
|
}
|
|
|
|
/*
|
|
* The driver established a maximum scatter-gather segment count
|
|
* during probe that limits the number of sg elements in any
|
|
* single scsi command. Just run through the seg_cnt and format
|
|
* the bde's.
|
|
* When using SLI-3 the driver will try to fit all the BDEs into
|
|
* the IOCB. If it can't then the BDEs get added to a BPL as it
|
|
* does for SLI-2 mode.
|
|
*/
|
|
scsi_for_each_sg(scsi_cmnd, sgel, nseg, num_bde) {
|
|
physaddr = sg_dma_address(sgel);
|
|
if (phba->sli_rev == 3 &&
|
|
!(phba->sli3_options & LPFC_SLI3_BG_ENABLED) &&
|
|
!(iocbq->cmd_flag & DSS_SECURITY_OP) &&
|
|
nseg <= LPFC_EXT_DATA_BDE_COUNT) {
|
|
data_bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
|
|
data_bde->tus.f.bdeSize = sg_dma_len(sgel);
|
|
data_bde->addrLow = putPaddrLow(physaddr);
|
|
data_bde->addrHigh = putPaddrHigh(physaddr);
|
|
data_bde++;
|
|
} else {
|
|
bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
|
|
bpl->tus.f.bdeSize = sg_dma_len(sgel);
|
|
bpl->tus.w = le32_to_cpu(bpl->tus.w);
|
|
bpl->addrLow =
|
|
le32_to_cpu(putPaddrLow(physaddr));
|
|
bpl->addrHigh =
|
|
le32_to_cpu(putPaddrHigh(physaddr));
|
|
bpl++;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Finish initializing those IOCB fields that are dependent on the
|
|
* scsi_cmnd request_buffer. Note that for SLI-2 the bdeSize is
|
|
* explicitly reinitialized and for SLI-3 the extended bde count is
|
|
* explicitly reinitialized since all iocb memory resources are reused.
|
|
*/
|
|
if (phba->sli_rev == 3 &&
|
|
!(phba->sli3_options & LPFC_SLI3_BG_ENABLED) &&
|
|
!(iocbq->cmd_flag & DSS_SECURITY_OP)) {
|
|
if (num_bde > LPFC_EXT_DATA_BDE_COUNT) {
|
|
/*
|
|
* The extended IOCB format can only fit 3 BDE or a BPL.
|
|
* This I/O has more than 3 BDE so the 1st data bde will
|
|
* be a BPL that is filled in here.
|
|
*/
|
|
physaddr = lpfc_cmd->dma_handle;
|
|
data_bde->tus.f.bdeFlags = BUFF_TYPE_BLP_64;
|
|
data_bde->tus.f.bdeSize = (num_bde *
|
|
sizeof(struct ulp_bde64));
|
|
physaddr += (sizeof(struct fcp_cmnd) +
|
|
sizeof(struct fcp_rsp) +
|
|
(2 * sizeof(struct ulp_bde64)));
|
|
data_bde->addrHigh = putPaddrHigh(physaddr);
|
|
data_bde->addrLow = putPaddrLow(physaddr);
|
|
/* ebde count includes the response bde and data bpl */
|
|
iocb_cmd->unsli3.fcp_ext.ebde_count = 2;
|
|
} else {
|
|
/* ebde count includes the response bde and data bdes */
|
|
iocb_cmd->unsli3.fcp_ext.ebde_count = (num_bde + 1);
|
|
}
|
|
} else {
|
|
iocb_cmd->un.fcpi64.bdl.bdeSize =
|
|
((num_bde + 2) * sizeof(struct ulp_bde64));
|
|
iocb_cmd->unsli3.fcp_ext.ebde_count = (num_bde + 1);
|
|
}
|
|
fcp_cmnd->fcpDl = cpu_to_be32(scsi_bufflen(scsi_cmnd));
|
|
|
|
/*
|
|
* Due to difference in data length between DIF/non-DIF paths,
|
|
* we need to set word 4 of IOCB here
|
|
*/
|
|
iocb_cmd->un.fcpi.fcpi_parm = scsi_bufflen(scsi_cmnd);
|
|
lpfc_fcpcmd_to_iocb(iocb_cmd->unsli3.fcp_ext.icd, fcp_cmnd);
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
|
|
|
|
/* Return BG_ERR_INIT if error injection is detected by Initiator */
|
|
#define BG_ERR_INIT 0x1
|
|
/* Return BG_ERR_TGT if error injection is detected by Target */
|
|
#define BG_ERR_TGT 0x2
|
|
/* Return BG_ERR_SWAP if swapping CSUM<-->CRC is required for error injection */
|
|
#define BG_ERR_SWAP 0x10
|
|
/*
|
|
* Return BG_ERR_CHECK if disabling Guard/Ref/App checking is required for
|
|
* error injection
|
|
*/
|
|
#define BG_ERR_CHECK 0x20
|
|
|
|
/**
|
|
* lpfc_bg_err_inject - Determine if we should inject an error
|
|
* @phba: The Hba for which this call is being executed.
|
|
* @sc: The SCSI command to examine
|
|
* @reftag: (out) BlockGuard reference tag for transmitted data
|
|
* @apptag: (out) BlockGuard application tag for transmitted data
|
|
* @new_guard: (in) Value to replace CRC with if needed
|
|
*
|
|
* Returns BG_ERR_* bit mask or 0 if request ignored
|
|
**/
|
|
static int
|
|
lpfc_bg_err_inject(struct lpfc_hba *phba, struct scsi_cmnd *sc,
|
|
uint32_t *reftag, uint16_t *apptag, uint32_t new_guard)
|
|
{
|
|
struct scatterlist *sgpe; /* s/g prot entry */
|
|
struct lpfc_io_buf *lpfc_cmd = NULL;
|
|
struct scsi_dif_tuple *src = NULL;
|
|
struct lpfc_nodelist *ndlp;
|
|
struct lpfc_rport_data *rdata;
|
|
uint32_t op = scsi_get_prot_op(sc);
|
|
uint32_t blksize;
|
|
uint32_t numblks;
|
|
u32 lba;
|
|
int rc = 0;
|
|
int blockoff = 0;
|
|
|
|
if (op == SCSI_PROT_NORMAL)
|
|
return 0;
|
|
|
|
sgpe = scsi_prot_sglist(sc);
|
|
lba = scsi_prot_ref_tag(sc);
|
|
|
|
/* First check if we need to match the LBA */
|
|
if (phba->lpfc_injerr_lba != LPFC_INJERR_LBA_OFF) {
|
|
blksize = scsi_prot_interval(sc);
|
|
numblks = (scsi_bufflen(sc) + blksize - 1) / blksize;
|
|
|
|
/* Make sure we have the right LBA if one is specified */
|
|
if (phba->lpfc_injerr_lba < (u64)lba ||
|
|
(phba->lpfc_injerr_lba >= (u64)(lba + numblks)))
|
|
return 0;
|
|
if (sgpe) {
|
|
blockoff = phba->lpfc_injerr_lba - (u64)lba;
|
|
numblks = sg_dma_len(sgpe) /
|
|
sizeof(struct scsi_dif_tuple);
|
|
if (numblks < blockoff)
|
|
blockoff = numblks;
|
|
}
|
|
}
|
|
|
|
/* Next check if we need to match the remote NPortID or WWPN */
|
|
rdata = lpfc_rport_data_from_scsi_device(sc->device);
|
|
if (rdata && rdata->pnode) {
|
|
ndlp = rdata->pnode;
|
|
|
|
/* Make sure we have the right NPortID if one is specified */
|
|
if (phba->lpfc_injerr_nportid &&
|
|
(phba->lpfc_injerr_nportid != ndlp->nlp_DID))
|
|
return 0;
|
|
|
|
/*
|
|
* Make sure we have the right WWPN if one is specified.
|
|
* wwn[0] should be a non-zero NAA in a good WWPN.
|
|
*/
|
|
if (phba->lpfc_injerr_wwpn.u.wwn[0] &&
|
|
(memcmp(&ndlp->nlp_portname, &phba->lpfc_injerr_wwpn,
|
|
sizeof(struct lpfc_name)) != 0))
|
|
return 0;
|
|
}
|
|
|
|
/* Setup a ptr to the protection data if the SCSI host provides it */
|
|
if (sgpe) {
|
|
src = (struct scsi_dif_tuple *)sg_virt(sgpe);
|
|
src += blockoff;
|
|
lpfc_cmd = (struct lpfc_io_buf *)sc->host_scribble;
|
|
}
|
|
|
|
/* Should we change the Reference Tag */
|
|
if (reftag) {
|
|
if (phba->lpfc_injerr_wref_cnt) {
|
|
switch (op) {
|
|
case SCSI_PROT_WRITE_PASS:
|
|
if (src) {
|
|
/*
|
|
* For WRITE_PASS, force the error
|
|
* to be sent on the wire. It should
|
|
* be detected by the Target.
|
|
* If blockoff != 0 error will be
|
|
* inserted in middle of the IO.
|
|
*/
|
|
|
|
lpfc_printf_log(phba, KERN_ERR,
|
|
LOG_TRACE_EVENT,
|
|
"9076 BLKGRD: Injecting reftag error: "
|
|
"write lba x%lx + x%x oldrefTag x%x\n",
|
|
(unsigned long)lba, blockoff,
|
|
be32_to_cpu(src->ref_tag));
|
|
|
|
/*
|
|
* Save the old ref_tag so we can
|
|
* restore it on completion.
|
|
*/
|
|
if (lpfc_cmd) {
|
|
lpfc_cmd->prot_data_type =
|
|
LPFC_INJERR_REFTAG;
|
|
lpfc_cmd->prot_data_segment =
|
|
src;
|
|
lpfc_cmd->prot_data =
|
|
src->ref_tag;
|
|
}
|
|
src->ref_tag = cpu_to_be32(0xDEADBEEF);
|
|
phba->lpfc_injerr_wref_cnt--;
|
|
if (phba->lpfc_injerr_wref_cnt == 0) {
|
|
phba->lpfc_injerr_nportid = 0;
|
|
phba->lpfc_injerr_lba =
|
|
LPFC_INJERR_LBA_OFF;
|
|
memset(&phba->lpfc_injerr_wwpn,
|
|
0, sizeof(struct lpfc_name));
|
|
}
|
|
rc = BG_ERR_TGT | BG_ERR_CHECK;
|
|
|
|
break;
|
|
}
|
|
fallthrough;
|
|
case SCSI_PROT_WRITE_INSERT:
|
|
/*
|
|
* For WRITE_INSERT, force the error
|
|
* to be sent on the wire. It should be
|
|
* detected by the Target.
|
|
*/
|
|
/* DEADBEEF will be the reftag on the wire */
|
|
*reftag = 0xDEADBEEF;
|
|
phba->lpfc_injerr_wref_cnt--;
|
|
if (phba->lpfc_injerr_wref_cnt == 0) {
|
|
phba->lpfc_injerr_nportid = 0;
|
|
phba->lpfc_injerr_lba =
|
|
LPFC_INJERR_LBA_OFF;
|
|
memset(&phba->lpfc_injerr_wwpn,
|
|
0, sizeof(struct lpfc_name));
|
|
}
|
|
rc = BG_ERR_TGT | BG_ERR_CHECK;
|
|
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
|
|
"9078 BLKGRD: Injecting reftag error: "
|
|
"write lba x%lx\n", (unsigned long)lba);
|
|
break;
|
|
case SCSI_PROT_WRITE_STRIP:
|
|
/*
|
|
* For WRITE_STRIP and WRITE_PASS,
|
|
* force the error on data
|
|
* being copied from SLI-Host to SLI-Port.
|
|
*/
|
|
*reftag = 0xDEADBEEF;
|
|
phba->lpfc_injerr_wref_cnt--;
|
|
if (phba->lpfc_injerr_wref_cnt == 0) {
|
|
phba->lpfc_injerr_nportid = 0;
|
|
phba->lpfc_injerr_lba =
|
|
LPFC_INJERR_LBA_OFF;
|
|
memset(&phba->lpfc_injerr_wwpn,
|
|
0, sizeof(struct lpfc_name));
|
|
}
|
|
rc = BG_ERR_INIT;
|
|
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
|
|
"9077 BLKGRD: Injecting reftag error: "
|
|
"write lba x%lx\n", (unsigned long)lba);
|
|
break;
|
|
}
|
|
}
|
|
if (phba->lpfc_injerr_rref_cnt) {
|
|
switch (op) {
|
|
case SCSI_PROT_READ_INSERT:
|
|
case SCSI_PROT_READ_STRIP:
|
|
case SCSI_PROT_READ_PASS:
|
|
/*
|
|
* For READ_STRIP and READ_PASS, force the
|
|
* error on data being read off the wire. It
|
|
* should force an IO error to the driver.
|
|
*/
|
|
*reftag = 0xDEADBEEF;
|
|
phba->lpfc_injerr_rref_cnt--;
|
|
if (phba->lpfc_injerr_rref_cnt == 0) {
|
|
phba->lpfc_injerr_nportid = 0;
|
|
phba->lpfc_injerr_lba =
|
|
LPFC_INJERR_LBA_OFF;
|
|
memset(&phba->lpfc_injerr_wwpn,
|
|
0, sizeof(struct lpfc_name));
|
|
}
|
|
rc = BG_ERR_INIT;
|
|
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
|
|
"9079 BLKGRD: Injecting reftag error: "
|
|
"read lba x%lx\n", (unsigned long)lba);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Should we change the Application Tag */
|
|
if (apptag) {
|
|
if (phba->lpfc_injerr_wapp_cnt) {
|
|
switch (op) {
|
|
case SCSI_PROT_WRITE_PASS:
|
|
if (src) {
|
|
/*
|
|
* For WRITE_PASS, force the error
|
|
* to be sent on the wire. It should
|
|
* be detected by the Target.
|
|
* If blockoff != 0 error will be
|
|
* inserted in middle of the IO.
|
|
*/
|
|
|
|
lpfc_printf_log(phba, KERN_ERR,
|
|
LOG_TRACE_EVENT,
|
|
"9080 BLKGRD: Injecting apptag error: "
|
|
"write lba x%lx + x%x oldappTag x%x\n",
|
|
(unsigned long)lba, blockoff,
|
|
be16_to_cpu(src->app_tag));
|
|
|
|
/*
|
|
* Save the old app_tag so we can
|
|
* restore it on completion.
|
|
*/
|
|
if (lpfc_cmd) {
|
|
lpfc_cmd->prot_data_type =
|
|
LPFC_INJERR_APPTAG;
|
|
lpfc_cmd->prot_data_segment =
|
|
src;
|
|
lpfc_cmd->prot_data =
|
|
src->app_tag;
|
|
}
|
|
src->app_tag = cpu_to_be16(0xDEAD);
|
|
phba->lpfc_injerr_wapp_cnt--;
|
|
if (phba->lpfc_injerr_wapp_cnt == 0) {
|
|
phba->lpfc_injerr_nportid = 0;
|
|
phba->lpfc_injerr_lba =
|
|
LPFC_INJERR_LBA_OFF;
|
|
memset(&phba->lpfc_injerr_wwpn,
|
|
0, sizeof(struct lpfc_name));
|
|
}
|
|
rc = BG_ERR_TGT | BG_ERR_CHECK;
|
|
break;
|
|
}
|
|
fallthrough;
|
|
case SCSI_PROT_WRITE_INSERT:
|
|
/*
|
|
* For WRITE_INSERT, force the
|
|
* error to be sent on the wire. It should be
|
|
* detected by the Target.
|
|
*/
|
|
/* DEAD will be the apptag on the wire */
|
|
*apptag = 0xDEAD;
|
|
phba->lpfc_injerr_wapp_cnt--;
|
|
if (phba->lpfc_injerr_wapp_cnt == 0) {
|
|
phba->lpfc_injerr_nportid = 0;
|
|
phba->lpfc_injerr_lba =
|
|
LPFC_INJERR_LBA_OFF;
|
|
memset(&phba->lpfc_injerr_wwpn,
|
|
0, sizeof(struct lpfc_name));
|
|
}
|
|
rc = BG_ERR_TGT | BG_ERR_CHECK;
|
|
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
|
|
"0813 BLKGRD: Injecting apptag error: "
|
|
"write lba x%lx\n", (unsigned long)lba);
|
|
break;
|
|
case SCSI_PROT_WRITE_STRIP:
|
|
/*
|
|
* For WRITE_STRIP and WRITE_PASS,
|
|
* force the error on data
|
|
* being copied from SLI-Host to SLI-Port.
|
|
*/
|
|
*apptag = 0xDEAD;
|
|
phba->lpfc_injerr_wapp_cnt--;
|
|
if (phba->lpfc_injerr_wapp_cnt == 0) {
|
|
phba->lpfc_injerr_nportid = 0;
|
|
phba->lpfc_injerr_lba =
|
|
LPFC_INJERR_LBA_OFF;
|
|
memset(&phba->lpfc_injerr_wwpn,
|
|
0, sizeof(struct lpfc_name));
|
|
}
|
|
rc = BG_ERR_INIT;
|
|
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
|
|
"0812 BLKGRD: Injecting apptag error: "
|
|
"write lba x%lx\n", (unsigned long)lba);
|
|
break;
|
|
}
|
|
}
|
|
if (phba->lpfc_injerr_rapp_cnt) {
|
|
switch (op) {
|
|
case SCSI_PROT_READ_INSERT:
|
|
case SCSI_PROT_READ_STRIP:
|
|
case SCSI_PROT_READ_PASS:
|
|
/*
|
|
* For READ_STRIP and READ_PASS, force the
|
|
* error on data being read off the wire. It
|
|
* should force an IO error to the driver.
|
|
*/
|
|
*apptag = 0xDEAD;
|
|
phba->lpfc_injerr_rapp_cnt--;
|
|
if (phba->lpfc_injerr_rapp_cnt == 0) {
|
|
phba->lpfc_injerr_nportid = 0;
|
|
phba->lpfc_injerr_lba =
|
|
LPFC_INJERR_LBA_OFF;
|
|
memset(&phba->lpfc_injerr_wwpn,
|
|
0, sizeof(struct lpfc_name));
|
|
}
|
|
rc = BG_ERR_INIT;
|
|
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
|
|
"0814 BLKGRD: Injecting apptag error: "
|
|
"read lba x%lx\n", (unsigned long)lba);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/* Should we change the Guard Tag */
|
|
if (new_guard) {
|
|
if (phba->lpfc_injerr_wgrd_cnt) {
|
|
switch (op) {
|
|
case SCSI_PROT_WRITE_PASS:
|
|
rc = BG_ERR_CHECK;
|
|
fallthrough;
|
|
|
|
case SCSI_PROT_WRITE_INSERT:
|
|
/*
|
|
* For WRITE_INSERT, force the
|
|
* error to be sent on the wire. It should be
|
|
* detected by the Target.
|
|
*/
|
|
phba->lpfc_injerr_wgrd_cnt--;
|
|
if (phba->lpfc_injerr_wgrd_cnt == 0) {
|
|
phba->lpfc_injerr_nportid = 0;
|
|
phba->lpfc_injerr_lba =
|
|
LPFC_INJERR_LBA_OFF;
|
|
memset(&phba->lpfc_injerr_wwpn,
|
|
0, sizeof(struct lpfc_name));
|
|
}
|
|
|
|
rc |= BG_ERR_TGT | BG_ERR_SWAP;
|
|
/* Signals the caller to swap CRC->CSUM */
|
|
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
|
|
"0817 BLKGRD: Injecting guard error: "
|
|
"write lba x%lx\n", (unsigned long)lba);
|
|
break;
|
|
case SCSI_PROT_WRITE_STRIP:
|
|
/*
|
|
* For WRITE_STRIP and WRITE_PASS,
|
|
* force the error on data
|
|
* being copied from SLI-Host to SLI-Port.
|
|
*/
|
|
phba->lpfc_injerr_wgrd_cnt--;
|
|
if (phba->lpfc_injerr_wgrd_cnt == 0) {
|
|
phba->lpfc_injerr_nportid = 0;
|
|
phba->lpfc_injerr_lba =
|
|
LPFC_INJERR_LBA_OFF;
|
|
memset(&phba->lpfc_injerr_wwpn,
|
|
0, sizeof(struct lpfc_name));
|
|
}
|
|
|
|
rc = BG_ERR_INIT | BG_ERR_SWAP;
|
|
/* Signals the caller to swap CRC->CSUM */
|
|
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
|
|
"0816 BLKGRD: Injecting guard error: "
|
|
"write lba x%lx\n", (unsigned long)lba);
|
|
break;
|
|
}
|
|
}
|
|
if (phba->lpfc_injerr_rgrd_cnt) {
|
|
switch (op) {
|
|
case SCSI_PROT_READ_INSERT:
|
|
case SCSI_PROT_READ_STRIP:
|
|
case SCSI_PROT_READ_PASS:
|
|
/*
|
|
* For READ_STRIP and READ_PASS, force the
|
|
* error on data being read off the wire. It
|
|
* should force an IO error to the driver.
|
|
*/
|
|
phba->lpfc_injerr_rgrd_cnt--;
|
|
if (phba->lpfc_injerr_rgrd_cnt == 0) {
|
|
phba->lpfc_injerr_nportid = 0;
|
|
phba->lpfc_injerr_lba =
|
|
LPFC_INJERR_LBA_OFF;
|
|
memset(&phba->lpfc_injerr_wwpn,
|
|
0, sizeof(struct lpfc_name));
|
|
}
|
|
|
|
rc = BG_ERR_INIT | BG_ERR_SWAP;
|
|
/* Signals the caller to swap CRC->CSUM */
|
|
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
|
|
"0818 BLKGRD: Injecting guard error: "
|
|
"read lba x%lx\n", (unsigned long)lba);
|
|
}
|
|
}
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
#endif
|
|
|
|
/**
|
|
* lpfc_sc_to_bg_opcodes - Determine the BlockGuard opcodes to be used with
|
|
* the specified SCSI command.
|
|
* @phba: The Hba for which this call is being executed.
|
|
* @sc: The SCSI command to examine
|
|
* @txop: (out) BlockGuard operation for transmitted data
|
|
* @rxop: (out) BlockGuard operation for received data
|
|
*
|
|
* Returns: zero on success; non-zero if tx and/or rx op cannot be determined
|
|
*
|
|
**/
|
|
static int
|
|
lpfc_sc_to_bg_opcodes(struct lpfc_hba *phba, struct scsi_cmnd *sc,
|
|
uint8_t *txop, uint8_t *rxop)
|
|
{
|
|
uint8_t ret = 0;
|
|
|
|
if (sc->prot_flags & SCSI_PROT_IP_CHECKSUM) {
|
|
switch (scsi_get_prot_op(sc)) {
|
|
case SCSI_PROT_READ_INSERT:
|
|
case SCSI_PROT_WRITE_STRIP:
|
|
*rxop = BG_OP_IN_NODIF_OUT_CSUM;
|
|
*txop = BG_OP_IN_CSUM_OUT_NODIF;
|
|
break;
|
|
|
|
case SCSI_PROT_READ_STRIP:
|
|
case SCSI_PROT_WRITE_INSERT:
|
|
*rxop = BG_OP_IN_CRC_OUT_NODIF;
|
|
*txop = BG_OP_IN_NODIF_OUT_CRC;
|
|
break;
|
|
|
|
case SCSI_PROT_READ_PASS:
|
|
case SCSI_PROT_WRITE_PASS:
|
|
*rxop = BG_OP_IN_CRC_OUT_CSUM;
|
|
*txop = BG_OP_IN_CSUM_OUT_CRC;
|
|
break;
|
|
|
|
case SCSI_PROT_NORMAL:
|
|
default:
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
|
|
"9063 BLKGRD: Bad op/guard:%d/IP combination\n",
|
|
scsi_get_prot_op(sc));
|
|
ret = 1;
|
|
break;
|
|
|
|
}
|
|
} else {
|
|
switch (scsi_get_prot_op(sc)) {
|
|
case SCSI_PROT_READ_STRIP:
|
|
case SCSI_PROT_WRITE_INSERT:
|
|
*rxop = BG_OP_IN_CRC_OUT_NODIF;
|
|
*txop = BG_OP_IN_NODIF_OUT_CRC;
|
|
break;
|
|
|
|
case SCSI_PROT_READ_PASS:
|
|
case SCSI_PROT_WRITE_PASS:
|
|
*rxop = BG_OP_IN_CRC_OUT_CRC;
|
|
*txop = BG_OP_IN_CRC_OUT_CRC;
|
|
break;
|
|
|
|
case SCSI_PROT_READ_INSERT:
|
|
case SCSI_PROT_WRITE_STRIP:
|
|
*rxop = BG_OP_IN_NODIF_OUT_CRC;
|
|
*txop = BG_OP_IN_CRC_OUT_NODIF;
|
|
break;
|
|
|
|
case SCSI_PROT_NORMAL:
|
|
default:
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
|
|
"9075 BLKGRD: Bad op/guard:%d/CRC combination\n",
|
|
scsi_get_prot_op(sc));
|
|
ret = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
|
|
/**
|
|
* lpfc_bg_err_opcodes - reDetermine the BlockGuard opcodes to be used with
|
|
* the specified SCSI command in order to force a guard tag error.
|
|
* @phba: The Hba for which this call is being executed.
|
|
* @sc: The SCSI command to examine
|
|
* @txop: (out) BlockGuard operation for transmitted data
|
|
* @rxop: (out) BlockGuard operation for received data
|
|
*
|
|
* Returns: zero on success; non-zero if tx and/or rx op cannot be determined
|
|
*
|
|
**/
|
|
static int
|
|
lpfc_bg_err_opcodes(struct lpfc_hba *phba, struct scsi_cmnd *sc,
|
|
uint8_t *txop, uint8_t *rxop)
|
|
{
|
|
|
|
if (sc->prot_flags & SCSI_PROT_IP_CHECKSUM) {
|
|
switch (scsi_get_prot_op(sc)) {
|
|
case SCSI_PROT_READ_INSERT:
|
|
case SCSI_PROT_WRITE_STRIP:
|
|
*rxop = BG_OP_IN_NODIF_OUT_CRC;
|
|
*txop = BG_OP_IN_CRC_OUT_NODIF;
|
|
break;
|
|
|
|
case SCSI_PROT_READ_STRIP:
|
|
case SCSI_PROT_WRITE_INSERT:
|
|
*rxop = BG_OP_IN_CSUM_OUT_NODIF;
|
|
*txop = BG_OP_IN_NODIF_OUT_CSUM;
|
|
break;
|
|
|
|
case SCSI_PROT_READ_PASS:
|
|
case SCSI_PROT_WRITE_PASS:
|
|
*rxop = BG_OP_IN_CSUM_OUT_CRC;
|
|
*txop = BG_OP_IN_CRC_OUT_CSUM;
|
|
break;
|
|
|
|
case SCSI_PROT_NORMAL:
|
|
default:
|
|
break;
|
|
|
|
}
|
|
} else {
|
|
switch (scsi_get_prot_op(sc)) {
|
|
case SCSI_PROT_READ_STRIP:
|
|
case SCSI_PROT_WRITE_INSERT:
|
|
*rxop = BG_OP_IN_CSUM_OUT_NODIF;
|
|
*txop = BG_OP_IN_NODIF_OUT_CSUM;
|
|
break;
|
|
|
|
case SCSI_PROT_READ_PASS:
|
|
case SCSI_PROT_WRITE_PASS:
|
|
*rxop = BG_OP_IN_CSUM_OUT_CSUM;
|
|
*txop = BG_OP_IN_CSUM_OUT_CSUM;
|
|
break;
|
|
|
|
case SCSI_PROT_READ_INSERT:
|
|
case SCSI_PROT_WRITE_STRIP:
|
|
*rxop = BG_OP_IN_NODIF_OUT_CSUM;
|
|
*txop = BG_OP_IN_CSUM_OUT_NODIF;
|
|
break;
|
|
|
|
case SCSI_PROT_NORMAL:
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
/**
|
|
* lpfc_bg_setup_bpl - Setup BlockGuard BPL with no protection data
|
|
* @phba: The Hba for which this call is being executed.
|
|
* @sc: pointer to scsi command we're working on
|
|
* @bpl: pointer to buffer list for protection groups
|
|
* @datasegcnt: number of segments of data that have been dma mapped
|
|
*
|
|
* This function sets up BPL buffer list for protection groups of
|
|
* type LPFC_PG_TYPE_NO_DIF
|
|
*
|
|
* This is usually used when the HBA is instructed to generate
|
|
* DIFs and insert them into data stream (or strip DIF from
|
|
* incoming data stream)
|
|
*
|
|
* The buffer list consists of just one protection group described
|
|
* below:
|
|
* +-------------------------+
|
|
* start of prot group --> | PDE_5 |
|
|
* +-------------------------+
|
|
* | PDE_6 |
|
|
* +-------------------------+
|
|
* | Data BDE |
|
|
* +-------------------------+
|
|
* |more Data BDE's ... (opt)|
|
|
* +-------------------------+
|
|
*
|
|
*
|
|
* Note: Data s/g buffers have been dma mapped
|
|
*
|
|
* Returns the number of BDEs added to the BPL.
|
|
**/
|
|
static int
|
|
lpfc_bg_setup_bpl(struct lpfc_hba *phba, struct scsi_cmnd *sc,
|
|
struct ulp_bde64 *bpl, int datasegcnt)
|
|
{
|
|
struct scatterlist *sgde = NULL; /* s/g data entry */
|
|
struct lpfc_pde5 *pde5 = NULL;
|
|
struct lpfc_pde6 *pde6 = NULL;
|
|
dma_addr_t physaddr;
|
|
int i = 0, num_bde = 0, status;
|
|
int datadir = sc->sc_data_direction;
|
|
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
|
|
uint32_t rc;
|
|
#endif
|
|
uint32_t checking = 1;
|
|
uint32_t reftag;
|
|
uint8_t txop, rxop;
|
|
|
|
status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop);
|
|
if (status)
|
|
goto out;
|
|
|
|
/* extract some info from the scsi command for pde*/
|
|
reftag = scsi_prot_ref_tag(sc);
|
|
|
|
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
|
|
rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1);
|
|
if (rc) {
|
|
if (rc & BG_ERR_SWAP)
|
|
lpfc_bg_err_opcodes(phba, sc, &txop, &rxop);
|
|
if (rc & BG_ERR_CHECK)
|
|
checking = 0;
|
|
}
|
|
#endif
|
|
|
|
/* setup PDE5 with what we have */
|
|
pde5 = (struct lpfc_pde5 *) bpl;
|
|
memset(pde5, 0, sizeof(struct lpfc_pde5));
|
|
bf_set(pde5_type, pde5, LPFC_PDE5_DESCRIPTOR);
|
|
|
|
/* Endianness conversion if necessary for PDE5 */
|
|
pde5->word0 = cpu_to_le32(pde5->word0);
|
|
pde5->reftag = cpu_to_le32(reftag);
|
|
|
|
/* advance bpl and increment bde count */
|
|
num_bde++;
|
|
bpl++;
|
|
pde6 = (struct lpfc_pde6 *) bpl;
|
|
|
|
/* setup PDE6 with the rest of the info */
|
|
memset(pde6, 0, sizeof(struct lpfc_pde6));
|
|
bf_set(pde6_type, pde6, LPFC_PDE6_DESCRIPTOR);
|
|
bf_set(pde6_optx, pde6, txop);
|
|
bf_set(pde6_oprx, pde6, rxop);
|
|
|
|
/*
|
|
* We only need to check the data on READs, for WRITEs
|
|
* protection data is automatically generated, not checked.
|
|
*/
|
|
if (datadir == DMA_FROM_DEVICE) {
|
|
if (sc->prot_flags & SCSI_PROT_GUARD_CHECK)
|
|
bf_set(pde6_ce, pde6, checking);
|
|
else
|
|
bf_set(pde6_ce, pde6, 0);
|
|
|
|
if (sc->prot_flags & SCSI_PROT_REF_CHECK)
|
|
bf_set(pde6_re, pde6, checking);
|
|
else
|
|
bf_set(pde6_re, pde6, 0);
|
|
}
|
|
bf_set(pde6_ai, pde6, 1);
|
|
bf_set(pde6_ae, pde6, 0);
|
|
bf_set(pde6_apptagval, pde6, 0);
|
|
|
|
/* Endianness conversion if necessary for PDE6 */
|
|
pde6->word0 = cpu_to_le32(pde6->word0);
|
|
pde6->word1 = cpu_to_le32(pde6->word1);
|
|
pde6->word2 = cpu_to_le32(pde6->word2);
|
|
|
|
/* advance bpl and increment bde count */
|
|
num_bde++;
|
|
bpl++;
|
|
|
|
/* assumption: caller has already run dma_map_sg on command data */
|
|
scsi_for_each_sg(sc, sgde, datasegcnt, i) {
|
|
physaddr = sg_dma_address(sgde);
|
|
bpl->addrLow = le32_to_cpu(putPaddrLow(physaddr));
|
|
bpl->addrHigh = le32_to_cpu(putPaddrHigh(physaddr));
|
|
bpl->tus.f.bdeSize = sg_dma_len(sgde);
|
|
if (datadir == DMA_TO_DEVICE)
|
|
bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
|
|
else
|
|
bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
|
|
bpl->tus.w = le32_to_cpu(bpl->tus.w);
|
|
bpl++;
|
|
num_bde++;
|
|
}
|
|
|
|
out:
|
|
return num_bde;
|
|
}
|
|
|
|
/**
|
|
* lpfc_bg_setup_bpl_prot - Setup BlockGuard BPL with protection data
|
|
* @phba: The Hba for which this call is being executed.
|
|
* @sc: pointer to scsi command we're working on
|
|
* @bpl: pointer to buffer list for protection groups
|
|
* @datacnt: number of segments of data that have been dma mapped
|
|
* @protcnt: number of segment of protection data that have been dma mapped
|
|
*
|
|
* This function sets up BPL buffer list for protection groups of
|
|
* type LPFC_PG_TYPE_DIF
|
|
*
|
|
* This is usually used when DIFs are in their own buffers,
|
|
* separate from the data. The HBA can then by instructed
|
|
* to place the DIFs in the outgoing stream. For read operations,
|
|
* The HBA could extract the DIFs and place it in DIF buffers.
|
|
*
|
|
* The buffer list for this type consists of one or more of the
|
|
* protection groups described below:
|
|
* +-------------------------+
|
|
* start of first prot group --> | PDE_5 |
|
|
* +-------------------------+
|
|
* | PDE_6 |
|
|
* +-------------------------+
|
|
* | PDE_7 (Prot BDE) |
|
|
* +-------------------------+
|
|
* | Data BDE |
|
|
* +-------------------------+
|
|
* |more Data BDE's ... (opt)|
|
|
* +-------------------------+
|
|
* start of new prot group --> | PDE_5 |
|
|
* +-------------------------+
|
|
* | ... |
|
|
* +-------------------------+
|
|
*
|
|
* Note: It is assumed that both data and protection s/g buffers have been
|
|
* mapped for DMA
|
|
*
|
|
* Returns the number of BDEs added to the BPL.
|
|
**/
|
|
static int
|
|
lpfc_bg_setup_bpl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc,
|
|
struct ulp_bde64 *bpl, int datacnt, int protcnt)
|
|
{
|
|
struct scatterlist *sgde = NULL; /* s/g data entry */
|
|
struct scatterlist *sgpe = NULL; /* s/g prot entry */
|
|
struct lpfc_pde5 *pde5 = NULL;
|
|
struct lpfc_pde6 *pde6 = NULL;
|
|
struct lpfc_pde7 *pde7 = NULL;
|
|
dma_addr_t dataphysaddr, protphysaddr;
|
|
unsigned short curr_prot = 0;
|
|
unsigned int split_offset;
|
|
unsigned int protgroup_len, protgroup_offset = 0, protgroup_remainder;
|
|
unsigned int protgrp_blks, protgrp_bytes;
|
|
unsigned int remainder, subtotal;
|
|
int status;
|
|
int datadir = sc->sc_data_direction;
|
|
unsigned char pgdone = 0, alldone = 0;
|
|
unsigned blksize;
|
|
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
|
|
uint32_t rc;
|
|
#endif
|
|
uint32_t checking = 1;
|
|
uint32_t reftag;
|
|
uint8_t txop, rxop;
|
|
int num_bde = 0;
|
|
|
|
sgpe = scsi_prot_sglist(sc);
|
|
sgde = scsi_sglist(sc);
|
|
|
|
if (!sgpe || !sgde) {
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
|
|
"9020 Invalid s/g entry: data=x%px prot=x%px\n",
|
|
sgpe, sgde);
|
|
return 0;
|
|
}
|
|
|
|
status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop);
|
|
if (status)
|
|
goto out;
|
|
|
|
/* extract some info from the scsi command */
|
|
blksize = scsi_prot_interval(sc);
|
|
reftag = scsi_prot_ref_tag(sc);
|
|
|
|
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
|
|
rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1);
|
|
if (rc) {
|
|
if (rc & BG_ERR_SWAP)
|
|
lpfc_bg_err_opcodes(phba, sc, &txop, &rxop);
|
|
if (rc & BG_ERR_CHECK)
|
|
checking = 0;
|
|
}
|
|
#endif
|
|
|
|
split_offset = 0;
|
|
do {
|
|
/* Check to see if we ran out of space */
|
|
if (num_bde >= (phba->cfg_total_seg_cnt - 2))
|
|
return num_bde + 3;
|
|
|
|
/* setup PDE5 with what we have */
|
|
pde5 = (struct lpfc_pde5 *) bpl;
|
|
memset(pde5, 0, sizeof(struct lpfc_pde5));
|
|
bf_set(pde5_type, pde5, LPFC_PDE5_DESCRIPTOR);
|
|
|
|
/* Endianness conversion if necessary for PDE5 */
|
|
pde5->word0 = cpu_to_le32(pde5->word0);
|
|
pde5->reftag = cpu_to_le32(reftag);
|
|
|
|
/* advance bpl and increment bde count */
|
|
num_bde++;
|
|
bpl++;
|
|
pde6 = (struct lpfc_pde6 *) bpl;
|
|
|
|
/* setup PDE6 with the rest of the info */
|
|
memset(pde6, 0, sizeof(struct lpfc_pde6));
|
|
bf_set(pde6_type, pde6, LPFC_PDE6_DESCRIPTOR);
|
|
bf_set(pde6_optx, pde6, txop);
|
|
bf_set(pde6_oprx, pde6, rxop);
|
|
|
|
if (sc->prot_flags & SCSI_PROT_GUARD_CHECK)
|
|
bf_set(pde6_ce, pde6, checking);
|
|
else
|
|
bf_set(pde6_ce, pde6, 0);
|
|
|
|
if (sc->prot_flags & SCSI_PROT_REF_CHECK)
|
|
bf_set(pde6_re, pde6, checking);
|
|
else
|
|
bf_set(pde6_re, pde6, 0);
|
|
|
|
bf_set(pde6_ai, pde6, 1);
|
|
bf_set(pde6_ae, pde6, 0);
|
|
bf_set(pde6_apptagval, pde6, 0);
|
|
|
|
/* Endianness conversion if necessary for PDE6 */
|
|
pde6->word0 = cpu_to_le32(pde6->word0);
|
|
pde6->word1 = cpu_to_le32(pde6->word1);
|
|
pde6->word2 = cpu_to_le32(pde6->word2);
|
|
|
|
/* advance bpl and increment bde count */
|
|
num_bde++;
|
|
bpl++;
|
|
|
|
/* setup the first BDE that points to protection buffer */
|
|
protphysaddr = sg_dma_address(sgpe) + protgroup_offset;
|
|
protgroup_len = sg_dma_len(sgpe) - protgroup_offset;
|
|
|
|
/* must be integer multiple of the DIF block length */
|
|
BUG_ON(protgroup_len % 8);
|
|
|
|
pde7 = (struct lpfc_pde7 *) bpl;
|
|
memset(pde7, 0, sizeof(struct lpfc_pde7));
|
|
bf_set(pde7_type, pde7, LPFC_PDE7_DESCRIPTOR);
|
|
|
|
pde7->addrHigh = le32_to_cpu(putPaddrHigh(protphysaddr));
|
|
pde7->addrLow = le32_to_cpu(putPaddrLow(protphysaddr));
|
|
|
|
protgrp_blks = protgroup_len / 8;
|
|
protgrp_bytes = protgrp_blks * blksize;
|
|
|
|
/* check if this pde is crossing the 4K boundary; if so split */
|
|
if ((pde7->addrLow & 0xfff) + protgroup_len > 0x1000) {
|
|
protgroup_remainder = 0x1000 - (pde7->addrLow & 0xfff);
|
|
protgroup_offset += protgroup_remainder;
|
|
protgrp_blks = protgroup_remainder / 8;
|
|
protgrp_bytes = protgrp_blks * blksize;
|
|
} else {
|
|
protgroup_offset = 0;
|
|
curr_prot++;
|
|
}
|
|
|
|
num_bde++;
|
|
|
|
/* setup BDE's for data blocks associated with DIF data */
|
|
pgdone = 0;
|
|
subtotal = 0; /* total bytes processed for current prot grp */
|
|
while (!pgdone) {
|
|
/* Check to see if we ran out of space */
|
|
if (num_bde >= phba->cfg_total_seg_cnt)
|
|
return num_bde + 1;
|
|
|
|
if (!sgde) {
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
|
|
"9065 BLKGRD:%s Invalid data segment\n",
|
|
__func__);
|
|
return 0;
|
|
}
|
|
bpl++;
|
|
dataphysaddr = sg_dma_address(sgde) + split_offset;
|
|
bpl->addrLow = le32_to_cpu(putPaddrLow(dataphysaddr));
|
|
bpl->addrHigh = le32_to_cpu(putPaddrHigh(dataphysaddr));
|
|
|
|
remainder = sg_dma_len(sgde) - split_offset;
|
|
|
|
if ((subtotal + remainder) <= protgrp_bytes) {
|
|
/* we can use this whole buffer */
|
|
bpl->tus.f.bdeSize = remainder;
|
|
split_offset = 0;
|
|
|
|
if ((subtotal + remainder) == protgrp_bytes)
|
|
pgdone = 1;
|
|
} else {
|
|
/* must split this buffer with next prot grp */
|
|
bpl->tus.f.bdeSize = protgrp_bytes - subtotal;
|
|
split_offset += bpl->tus.f.bdeSize;
|
|
}
|
|
|
|
subtotal += bpl->tus.f.bdeSize;
|
|
|
|
if (datadir == DMA_TO_DEVICE)
|
|
bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
|
|
else
|
|
bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
|
|
bpl->tus.w = le32_to_cpu(bpl->tus.w);
|
|
|
|
num_bde++;
|
|
|
|
if (split_offset)
|
|
break;
|
|
|
|
/* Move to the next s/g segment if possible */
|
|
sgde = sg_next(sgde);
|
|
|
|
}
|
|
|
|
if (protgroup_offset) {
|
|
/* update the reference tag */
|
|
reftag += protgrp_blks;
|
|
bpl++;
|
|
continue;
|
|
}
|
|
|
|
/* are we done ? */
|
|
if (curr_prot == protcnt) {
|
|
alldone = 1;
|
|
} else if (curr_prot < protcnt) {
|
|
/* advance to next prot buffer */
|
|
sgpe = sg_next(sgpe);
|
|
bpl++;
|
|
|
|
/* update the reference tag */
|
|
reftag += protgrp_blks;
|
|
} else {
|
|
/* if we're here, we have a bug */
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
|
|
"9054 BLKGRD: bug in %s\n", __func__);
|
|
}
|
|
|
|
} while (!alldone);
|
|
out:
|
|
|
|
return num_bde;
|
|
}
|
|
|
|
/**
|
|
* lpfc_bg_setup_sgl - Setup BlockGuard SGL with no protection data
|
|
* @phba: The Hba for which this call is being executed.
|
|
* @sc: pointer to scsi command we're working on
|
|
* @sgl: pointer to buffer list for protection groups
|
|
* @datasegcnt: number of segments of data that have been dma mapped
|
|
* @lpfc_cmd: lpfc scsi command object pointer.
|
|
*
|
|
* This function sets up SGL buffer list for protection groups of
|
|
* type LPFC_PG_TYPE_NO_DIF
|
|
*
|
|
* This is usually used when the HBA is instructed to generate
|
|
* DIFs and insert them into data stream (or strip DIF from
|
|
* incoming data stream)
|
|
*
|
|
* The buffer list consists of just one protection group described
|
|
* below:
|
|
* +-------------------------+
|
|
* start of prot group --> | DI_SEED |
|
|
* +-------------------------+
|
|
* | Data SGE |
|
|
* +-------------------------+
|
|
* |more Data SGE's ... (opt)|
|
|
* +-------------------------+
|
|
*
|
|
*
|
|
* Note: Data s/g buffers have been dma mapped
|
|
*
|
|
* Returns the number of SGEs added to the SGL.
|
|
**/
|
|
static uint32_t
|
|
lpfc_bg_setup_sgl(struct lpfc_hba *phba, struct scsi_cmnd *sc,
|
|
struct sli4_sge *sgl, int datasegcnt,
|
|
struct lpfc_io_buf *lpfc_cmd)
|
|
{
|
|
struct scatterlist *sgde = NULL; /* s/g data entry */
|
|
struct sli4_sge_diseed *diseed = NULL;
|
|
dma_addr_t physaddr;
|
|
int i = 0, status;
|
|
uint32_t reftag, num_sge = 0;
|
|
uint8_t txop, rxop;
|
|
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
|
|
uint32_t rc;
|
|
#endif
|
|
uint32_t checking = 1;
|
|
uint32_t dma_len;
|
|
uint32_t dma_offset = 0;
|
|
struct sli4_hybrid_sgl *sgl_xtra = NULL;
|
|
int j;
|
|
bool lsp_just_set = false;
|
|
|
|
status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop);
|
|
if (status)
|
|
goto out;
|
|
|
|
/* extract some info from the scsi command for pde*/
|
|
reftag = scsi_prot_ref_tag(sc);
|
|
|
|
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
|
|
rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1);
|
|
if (rc) {
|
|
if (rc & BG_ERR_SWAP)
|
|
lpfc_bg_err_opcodes(phba, sc, &txop, &rxop);
|
|
if (rc & BG_ERR_CHECK)
|
|
checking = 0;
|
|
}
|
|
#endif
|
|
|
|
/* setup DISEED with what we have */
|
|
diseed = (struct sli4_sge_diseed *) sgl;
|
|
memset(diseed, 0, sizeof(struct sli4_sge_diseed));
|
|
bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DISEED);
|
|
|
|
/* Endianness conversion if necessary */
|
|
diseed->ref_tag = cpu_to_le32(reftag);
|
|
diseed->ref_tag_tran = diseed->ref_tag;
|
|
|
|
/*
|
|
* We only need to check the data on READs, for WRITEs
|
|
* protection data is automatically generated, not checked.
|
|
*/
|
|
if (sc->sc_data_direction == DMA_FROM_DEVICE) {
|
|
if (sc->prot_flags & SCSI_PROT_GUARD_CHECK)
|
|
bf_set(lpfc_sli4_sge_dif_ce, diseed, checking);
|
|
else
|
|
bf_set(lpfc_sli4_sge_dif_ce, diseed, 0);
|
|
|
|
if (sc->prot_flags & SCSI_PROT_REF_CHECK)
|
|
bf_set(lpfc_sli4_sge_dif_re, diseed, checking);
|
|
else
|
|
bf_set(lpfc_sli4_sge_dif_re, diseed, 0);
|
|
}
|
|
|
|
/* setup DISEED with the rest of the info */
|
|
bf_set(lpfc_sli4_sge_dif_optx, diseed, txop);
|
|
bf_set(lpfc_sli4_sge_dif_oprx, diseed, rxop);
|
|
|
|
bf_set(lpfc_sli4_sge_dif_ai, diseed, 1);
|
|
bf_set(lpfc_sli4_sge_dif_me, diseed, 0);
|
|
|
|
/* Endianness conversion if necessary for DISEED */
|
|
diseed->word2 = cpu_to_le32(diseed->word2);
|
|
diseed->word3 = cpu_to_le32(diseed->word3);
|
|
|
|
/* advance bpl and increment sge count */
|
|
num_sge++;
|
|
sgl++;
|
|
|
|
/* assumption: caller has already run dma_map_sg on command data */
|
|
sgde = scsi_sglist(sc);
|
|
j = 3;
|
|
for (i = 0; i < datasegcnt; i++) {
|
|
/* clear it */
|
|
sgl->word2 = 0;
|
|
|
|
/* do we need to expand the segment */
|
|
if (!lsp_just_set && !((j + 1) % phba->border_sge_num) &&
|
|
((datasegcnt - 1) != i)) {
|
|
/* set LSP type */
|
|
bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_LSP);
|
|
|
|
sgl_xtra = lpfc_get_sgl_per_hdwq(phba, lpfc_cmd);
|
|
|
|
if (unlikely(!sgl_xtra)) {
|
|
lpfc_cmd->seg_cnt = 0;
|
|
return 0;
|
|
}
|
|
sgl->addr_lo = cpu_to_le32(putPaddrLow(
|
|
sgl_xtra->dma_phys_sgl));
|
|
sgl->addr_hi = cpu_to_le32(putPaddrHigh(
|
|
sgl_xtra->dma_phys_sgl));
|
|
|
|
} else {
|
|
bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA);
|
|
}
|
|
|
|
if (!(bf_get(lpfc_sli4_sge_type, sgl) & LPFC_SGE_TYPE_LSP)) {
|
|
if ((datasegcnt - 1) == i)
|
|
bf_set(lpfc_sli4_sge_last, sgl, 1);
|
|
physaddr = sg_dma_address(sgde);
|
|
dma_len = sg_dma_len(sgde);
|
|
sgl->addr_lo = cpu_to_le32(putPaddrLow(physaddr));
|
|
sgl->addr_hi = cpu_to_le32(putPaddrHigh(physaddr));
|
|
|
|
bf_set(lpfc_sli4_sge_offset, sgl, dma_offset);
|
|
sgl->word2 = cpu_to_le32(sgl->word2);
|
|
sgl->sge_len = cpu_to_le32(dma_len);
|
|
|
|
dma_offset += dma_len;
|
|
sgde = sg_next(sgde);
|
|
|
|
sgl++;
|
|
num_sge++;
|
|
lsp_just_set = false;
|
|
|
|
} else {
|
|
sgl->word2 = cpu_to_le32(sgl->word2);
|
|
sgl->sge_len = cpu_to_le32(phba->cfg_sg_dma_buf_size);
|
|
|
|
sgl = (struct sli4_sge *)sgl_xtra->dma_sgl;
|
|
i = i - 1;
|
|
|
|
lsp_just_set = true;
|
|
}
|
|
|
|
j++;
|
|
|
|
}
|
|
|
|
out:
|
|
return num_sge;
|
|
}
|
|
|
|
/**
|
|
* lpfc_bg_setup_sgl_prot - Setup BlockGuard SGL with protection data
|
|
* @phba: The Hba for which this call is being executed.
|
|
* @sc: pointer to scsi command we're working on
|
|
* @sgl: pointer to buffer list for protection groups
|
|
* @datacnt: number of segments of data that have been dma mapped
|
|
* @protcnt: number of segment of protection data that have been dma mapped
|
|
* @lpfc_cmd: lpfc scsi command object pointer.
|
|
*
|
|
* This function sets up SGL buffer list for protection groups of
|
|
* type LPFC_PG_TYPE_DIF
|
|
*
|
|
* This is usually used when DIFs are in their own buffers,
|
|
* separate from the data. The HBA can then by instructed
|
|
* to place the DIFs in the outgoing stream. For read operations,
|
|
* The HBA could extract the DIFs and place it in DIF buffers.
|
|
*
|
|
* The buffer list for this type consists of one or more of the
|
|
* protection groups described below:
|
|
* +-------------------------+
|
|
* start of first prot group --> | DISEED |
|
|
* +-------------------------+
|
|
* | DIF (Prot SGE) |
|
|
* +-------------------------+
|
|
* | Data SGE |
|
|
* +-------------------------+
|
|
* |more Data SGE's ... (opt)|
|
|
* +-------------------------+
|
|
* start of new prot group --> | DISEED |
|
|
* +-------------------------+
|
|
* | ... |
|
|
* +-------------------------+
|
|
*
|
|
* Note: It is assumed that both data and protection s/g buffers have been
|
|
* mapped for DMA
|
|
*
|
|
* Returns the number of SGEs added to the SGL.
|
|
**/
|
|
static uint32_t
|
|
lpfc_bg_setup_sgl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc,
|
|
struct sli4_sge *sgl, int datacnt, int protcnt,
|
|
struct lpfc_io_buf *lpfc_cmd)
|
|
{
|
|
struct scatterlist *sgde = NULL; /* s/g data entry */
|
|
struct scatterlist *sgpe = NULL; /* s/g prot entry */
|
|
struct sli4_sge_diseed *diseed = NULL;
|
|
dma_addr_t dataphysaddr, protphysaddr;
|
|
unsigned short curr_prot = 0;
|
|
unsigned int split_offset;
|
|
unsigned int protgroup_len, protgroup_offset = 0, protgroup_remainder;
|
|
unsigned int protgrp_blks, protgrp_bytes;
|
|
unsigned int remainder, subtotal;
|
|
int status;
|
|
unsigned char pgdone = 0, alldone = 0;
|
|
unsigned blksize;
|
|
uint32_t reftag;
|
|
uint8_t txop, rxop;
|
|
uint32_t dma_len;
|
|
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
|
|
uint32_t rc;
|
|
#endif
|
|
uint32_t checking = 1;
|
|
uint32_t dma_offset = 0, num_sge = 0;
|
|
int j = 2;
|
|
struct sli4_hybrid_sgl *sgl_xtra = NULL;
|
|
|
|
sgpe = scsi_prot_sglist(sc);
|
|
sgde = scsi_sglist(sc);
|
|
|
|
if (!sgpe || !sgde) {
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
|
|
"9082 Invalid s/g entry: data=x%px prot=x%px\n",
|
|
sgpe, sgde);
|
|
return 0;
|
|
}
|
|
|
|
status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop);
|
|
if (status)
|
|
goto out;
|
|
|
|
/* extract some info from the scsi command */
|
|
blksize = scsi_prot_interval(sc);
|
|
reftag = scsi_prot_ref_tag(sc);
|
|
|
|
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
|
|
rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1);
|
|
if (rc) {
|
|
if (rc & BG_ERR_SWAP)
|
|
lpfc_bg_err_opcodes(phba, sc, &txop, &rxop);
|
|
if (rc & BG_ERR_CHECK)
|
|
checking = 0;
|
|
}
|
|
#endif
|
|
|
|
split_offset = 0;
|
|
do {
|
|
/* Check to see if we ran out of space */
|
|
if ((num_sge >= (phba->cfg_total_seg_cnt - 2)) &&
|
|
!(phba->cfg_xpsgl))
|
|
return num_sge + 3;
|
|
|
|
/* DISEED and DIF have to be together */
|
|
if (!((j + 1) % phba->border_sge_num) ||
|
|
!((j + 2) % phba->border_sge_num) ||
|
|
!((j + 3) % phba->border_sge_num)) {
|
|
sgl->word2 = 0;
|
|
|
|
/* set LSP type */
|
|
bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_LSP);
|
|
|
|
sgl_xtra = lpfc_get_sgl_per_hdwq(phba, lpfc_cmd);
|
|
|
|
if (unlikely(!sgl_xtra)) {
|
|
goto out;
|
|
} else {
|
|
sgl->addr_lo = cpu_to_le32(putPaddrLow(
|
|
sgl_xtra->dma_phys_sgl));
|
|
sgl->addr_hi = cpu_to_le32(putPaddrHigh(
|
|
sgl_xtra->dma_phys_sgl));
|
|
}
|
|
|
|
sgl->word2 = cpu_to_le32(sgl->word2);
|
|
sgl->sge_len = cpu_to_le32(phba->cfg_sg_dma_buf_size);
|
|
|
|
sgl = (struct sli4_sge *)sgl_xtra->dma_sgl;
|
|
j = 0;
|
|
}
|
|
|
|
/* setup DISEED with what we have */
|
|
diseed = (struct sli4_sge_diseed *) sgl;
|
|
memset(diseed, 0, sizeof(struct sli4_sge_diseed));
|
|
bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DISEED);
|
|
|
|
/* Endianness conversion if necessary */
|
|
diseed->ref_tag = cpu_to_le32(reftag);
|
|
diseed->ref_tag_tran = diseed->ref_tag;
|
|
|
|
if (sc->prot_flags & SCSI_PROT_GUARD_CHECK) {
|
|
bf_set(lpfc_sli4_sge_dif_ce, diseed, checking);
|
|
} else {
|
|
bf_set(lpfc_sli4_sge_dif_ce, diseed, 0);
|
|
/*
|
|
* When in this mode, the hardware will replace
|
|
* the guard tag from the host with a
|
|
* newly generated good CRC for the wire.
|
|
* Switch to raw mode here to avoid this
|
|
* behavior. What the host sends gets put on the wire.
|
|
*/
|
|
if (txop == BG_OP_IN_CRC_OUT_CRC) {
|
|
txop = BG_OP_RAW_MODE;
|
|
rxop = BG_OP_RAW_MODE;
|
|
}
|
|
}
|
|
|
|
|
|
if (sc->prot_flags & SCSI_PROT_REF_CHECK)
|
|
bf_set(lpfc_sli4_sge_dif_re, diseed, checking);
|
|
else
|
|
bf_set(lpfc_sli4_sge_dif_re, diseed, 0);
|
|
|
|
/* setup DISEED with the rest of the info */
|
|
bf_set(lpfc_sli4_sge_dif_optx, diseed, txop);
|
|
bf_set(lpfc_sli4_sge_dif_oprx, diseed, rxop);
|
|
|
|
bf_set(lpfc_sli4_sge_dif_ai, diseed, 1);
|
|
bf_set(lpfc_sli4_sge_dif_me, diseed, 0);
|
|
|
|
/* Endianness conversion if necessary for DISEED */
|
|
diseed->word2 = cpu_to_le32(diseed->word2);
|
|
diseed->word3 = cpu_to_le32(diseed->word3);
|
|
|
|
/* advance sgl and increment bde count */
|
|
num_sge++;
|
|
|
|
sgl++;
|
|
j++;
|
|
|
|
/* setup the first BDE that points to protection buffer */
|
|
protphysaddr = sg_dma_address(sgpe) + protgroup_offset;
|
|
protgroup_len = sg_dma_len(sgpe) - protgroup_offset;
|
|
|
|
/* must be integer multiple of the DIF block length */
|
|
BUG_ON(protgroup_len % 8);
|
|
|
|
/* Now setup DIF SGE */
|
|
sgl->word2 = 0;
|
|
bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DIF);
|
|
sgl->addr_hi = le32_to_cpu(putPaddrHigh(protphysaddr));
|
|
sgl->addr_lo = le32_to_cpu(putPaddrLow(protphysaddr));
|
|
sgl->word2 = cpu_to_le32(sgl->word2);
|
|
sgl->sge_len = 0;
|
|
|
|
protgrp_blks = protgroup_len / 8;
|
|
protgrp_bytes = protgrp_blks * blksize;
|
|
|
|
/* check if DIF SGE is crossing the 4K boundary; if so split */
|
|
if ((sgl->addr_lo & 0xfff) + protgroup_len > 0x1000) {
|
|
protgroup_remainder = 0x1000 - (sgl->addr_lo & 0xfff);
|
|
protgroup_offset += protgroup_remainder;
|
|
protgrp_blks = protgroup_remainder / 8;
|
|
protgrp_bytes = protgrp_blks * blksize;
|
|
} else {
|
|
protgroup_offset = 0;
|
|
curr_prot++;
|
|
}
|
|
|
|
num_sge++;
|
|
|
|
/* setup SGE's for data blocks associated with DIF data */
|
|
pgdone = 0;
|
|
subtotal = 0; /* total bytes processed for current prot grp */
|
|
|
|
sgl++;
|
|
j++;
|
|
|
|
while (!pgdone) {
|
|
/* Check to see if we ran out of space */
|
|
if ((num_sge >= phba->cfg_total_seg_cnt) &&
|
|
!phba->cfg_xpsgl)
|
|
return num_sge + 1;
|
|
|
|
if (!sgde) {
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
|
|
"9086 BLKGRD:%s Invalid data segment\n",
|
|
__func__);
|
|
return 0;
|
|
}
|
|
|
|
if (!((j + 1) % phba->border_sge_num)) {
|
|
sgl->word2 = 0;
|
|
|
|
/* set LSP type */
|
|
bf_set(lpfc_sli4_sge_type, sgl,
|
|
LPFC_SGE_TYPE_LSP);
|
|
|
|
sgl_xtra = lpfc_get_sgl_per_hdwq(phba,
|
|
lpfc_cmd);
|
|
|
|
if (unlikely(!sgl_xtra)) {
|
|
goto out;
|
|
} else {
|
|
sgl->addr_lo = cpu_to_le32(
|
|
putPaddrLow(sgl_xtra->dma_phys_sgl));
|
|
sgl->addr_hi = cpu_to_le32(
|
|
putPaddrHigh(sgl_xtra->dma_phys_sgl));
|
|
}
|
|
|
|
sgl->word2 = cpu_to_le32(sgl->word2);
|
|
sgl->sge_len = cpu_to_le32(
|
|
phba->cfg_sg_dma_buf_size);
|
|
|
|
sgl = (struct sli4_sge *)sgl_xtra->dma_sgl;
|
|
} else {
|
|
dataphysaddr = sg_dma_address(sgde) +
|
|
split_offset;
|
|
|
|
remainder = sg_dma_len(sgde) - split_offset;
|
|
|
|
if ((subtotal + remainder) <= protgrp_bytes) {
|
|
/* we can use this whole buffer */
|
|
dma_len = remainder;
|
|
split_offset = 0;
|
|
|
|
if ((subtotal + remainder) ==
|
|
protgrp_bytes)
|
|
pgdone = 1;
|
|
} else {
|
|
/* must split this buffer with next
|
|
* prot grp
|
|
*/
|
|
dma_len = protgrp_bytes - subtotal;
|
|
split_offset += dma_len;
|
|
}
|
|
|
|
subtotal += dma_len;
|
|
|
|
sgl->word2 = 0;
|
|
sgl->addr_lo = cpu_to_le32(putPaddrLow(
|
|
dataphysaddr));
|
|
sgl->addr_hi = cpu_to_le32(putPaddrHigh(
|
|
dataphysaddr));
|
|
bf_set(lpfc_sli4_sge_last, sgl, 0);
|
|
bf_set(lpfc_sli4_sge_offset, sgl, dma_offset);
|
|
bf_set(lpfc_sli4_sge_type, sgl,
|
|
LPFC_SGE_TYPE_DATA);
|
|
|
|
sgl->sge_len = cpu_to_le32(dma_len);
|
|
dma_offset += dma_len;
|
|
|
|
num_sge++;
|
|
|
|
if (split_offset) {
|
|
sgl++;
|
|
j++;
|
|
break;
|
|
}
|
|
|
|
/* Move to the next s/g segment if possible */
|
|
sgde = sg_next(sgde);
|
|
|
|
sgl++;
|
|
}
|
|
|
|
j++;
|
|
}
|
|
|
|
if (protgroup_offset) {
|
|
/* update the reference tag */
|
|
reftag += protgrp_blks;
|
|
continue;
|
|
}
|
|
|
|
/* are we done ? */
|
|
if (curr_prot == protcnt) {
|
|
/* mark the last SGL */
|
|
sgl--;
|
|
bf_set(lpfc_sli4_sge_last, sgl, 1);
|
|
alldone = 1;
|
|
} else if (curr_prot < protcnt) {
|
|
/* advance to next prot buffer */
|
|
sgpe = sg_next(sgpe);
|
|
|
|
/* update the reference tag */
|
|
reftag += protgrp_blks;
|
|
} else {
|
|
/* if we're here, we have a bug */
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
|
|
"9085 BLKGRD: bug in %s\n", __func__);
|
|
}
|
|
|
|
} while (!alldone);
|
|
|
|
out:
|
|
|
|
return num_sge;
|
|
}
|
|
|
|
/**
|
|
* lpfc_prot_group_type - Get prtotection group type of SCSI command
|
|
* @phba: The Hba for which this call is being executed.
|
|
* @sc: pointer to scsi command we're working on
|
|
*
|
|
* Given a SCSI command that supports DIF, determine composition of protection
|
|
* groups involved in setting up buffer lists
|
|
*
|
|
* Returns: Protection group type (with or without DIF)
|
|
*
|
|
**/
|
|
static int
|
|
lpfc_prot_group_type(struct lpfc_hba *phba, struct scsi_cmnd *sc)
|
|
{
|
|
int ret = LPFC_PG_TYPE_INVALID;
|
|
unsigned char op = scsi_get_prot_op(sc);
|
|
|
|
switch (op) {
|
|
case SCSI_PROT_READ_STRIP:
|
|
case SCSI_PROT_WRITE_INSERT:
|
|
ret = LPFC_PG_TYPE_NO_DIF;
|
|
break;
|
|
case SCSI_PROT_READ_INSERT:
|
|
case SCSI_PROT_WRITE_STRIP:
|
|
case SCSI_PROT_READ_PASS:
|
|
case SCSI_PROT_WRITE_PASS:
|
|
ret = LPFC_PG_TYPE_DIF_BUF;
|
|
break;
|
|
default:
|
|
if (phba)
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
|
|
"9021 Unsupported protection op:%d\n",
|
|
op);
|
|
break;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* lpfc_bg_scsi_adjust_dl - Adjust SCSI data length for BlockGuard
|
|
* @phba: The Hba for which this call is being executed.
|
|
* @lpfc_cmd: The scsi buffer which is going to be adjusted.
|
|
*
|
|
* Adjust the data length to account for how much data
|
|
* is actually on the wire.
|
|
*
|
|
* returns the adjusted data length
|
|
**/
|
|
static int
|
|
lpfc_bg_scsi_adjust_dl(struct lpfc_hba *phba,
|
|
struct lpfc_io_buf *lpfc_cmd)
|
|
{
|
|
struct scsi_cmnd *sc = lpfc_cmd->pCmd;
|
|
int fcpdl;
|
|
|
|
fcpdl = scsi_bufflen(sc);
|
|
|
|
/* Check if there is protection data on the wire */
|
|
if (sc->sc_data_direction == DMA_FROM_DEVICE) {
|
|
/* Read check for protection data */
|
|
if (scsi_get_prot_op(sc) == SCSI_PROT_READ_INSERT)
|
|
return fcpdl;
|
|
|
|
} else {
|
|
/* Write check for protection data */
|
|
if (scsi_get_prot_op(sc) == SCSI_PROT_WRITE_STRIP)
|
|
return fcpdl;
|
|
}
|
|
|
|
/*
|
|
* If we are in DIF Type 1 mode every data block has a 8 byte
|
|
* DIF (trailer) attached to it. Must ajust FCP data length
|
|
* to account for the protection data.
|
|
*/
|
|
fcpdl += (fcpdl / scsi_prot_interval(sc)) * 8;
|
|
|
|
return fcpdl;
|
|
}
|
|
|
|
/**
|
|
* lpfc_bg_scsi_prep_dma_buf_s3 - DMA mapping for scsi buffer to SLI3 IF spec
|
|
* @phba: The Hba for which this call is being executed.
|
|
* @lpfc_cmd: The scsi buffer which is going to be prep'ed.
|
|
*
|
|
* This is the protection/DIF aware version of
|
|
* lpfc_scsi_prep_dma_buf(). It may be a good idea to combine the
|
|
* two functions eventually, but for now, it's here.
|
|
* RETURNS 0 - SUCCESS,
|
|
* 1 - Failed DMA map, retry.
|
|
* 2 - Invalid scsi cmd or prot-type. Do not rety.
|
|
**/
|
|
static int
|
|
lpfc_bg_scsi_prep_dma_buf_s3(struct lpfc_hba *phba,
|
|
struct lpfc_io_buf *lpfc_cmd)
|
|
{
|
|
struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
|
|
struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
|
|
struct ulp_bde64 *bpl = (struct ulp_bde64 *)lpfc_cmd->dma_sgl;
|
|
IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
|
|
uint32_t num_bde = 0;
|
|
int datasegcnt, protsegcnt, datadir = scsi_cmnd->sc_data_direction;
|
|
int prot_group_type = 0;
|
|
int fcpdl;
|
|
int ret = 1;
|
|
struct lpfc_vport *vport = phba->pport;
|
|
|
|
/*
|
|
* Start the lpfc command prep by bumping the bpl beyond fcp_cmnd
|
|
* fcp_rsp regions to the first data bde entry
|
|
*/
|
|
bpl += 2;
|
|
if (scsi_sg_count(scsi_cmnd)) {
|
|
/*
|
|
* The driver stores the segment count returned from dma_map_sg
|
|
* because this a count of dma-mappings used to map the use_sg
|
|
* pages. They are not guaranteed to be the same for those
|
|
* architectures that implement an IOMMU.
|
|
*/
|
|
datasegcnt = dma_map_sg(&phba->pcidev->dev,
|
|
scsi_sglist(scsi_cmnd),
|
|
scsi_sg_count(scsi_cmnd), datadir);
|
|
if (unlikely(!datasegcnt))
|
|
return 1;
|
|
|
|
lpfc_cmd->seg_cnt = datasegcnt;
|
|
|
|
/* First check if data segment count from SCSI Layer is good */
|
|
if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) {
|
|
WARN_ON_ONCE(lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt);
|
|
ret = 2;
|
|
goto err;
|
|
}
|
|
|
|
prot_group_type = lpfc_prot_group_type(phba, scsi_cmnd);
|
|
|
|
switch (prot_group_type) {
|
|
case LPFC_PG_TYPE_NO_DIF:
|
|
|
|
/* Here we need to add a PDE5 and PDE6 to the count */
|
|
if ((lpfc_cmd->seg_cnt + 2) > phba->cfg_total_seg_cnt) {
|
|
ret = 2;
|
|
goto err;
|
|
}
|
|
|
|
num_bde = lpfc_bg_setup_bpl(phba, scsi_cmnd, bpl,
|
|
datasegcnt);
|
|
/* we should have 2 or more entries in buffer list */
|
|
if (num_bde < 2) {
|
|
ret = 2;
|
|
goto err;
|
|
}
|
|
break;
|
|
|
|
case LPFC_PG_TYPE_DIF_BUF:
|
|
/*
|
|
* This type indicates that protection buffers are
|
|
* passed to the driver, so that needs to be prepared
|
|
* for DMA
|
|
*/
|
|
protsegcnt = dma_map_sg(&phba->pcidev->dev,
|
|
scsi_prot_sglist(scsi_cmnd),
|
|
scsi_prot_sg_count(scsi_cmnd), datadir);
|
|
if (unlikely(!protsegcnt)) {
|
|
scsi_dma_unmap(scsi_cmnd);
|
|
return 1;
|
|
}
|
|
|
|
lpfc_cmd->prot_seg_cnt = protsegcnt;
|
|
|
|
/*
|
|
* There is a minimun of 4 BPLs used for every
|
|
* protection data segment.
|
|
*/
|
|
if ((lpfc_cmd->prot_seg_cnt * 4) >
|
|
(phba->cfg_total_seg_cnt - 2)) {
|
|
ret = 2;
|
|
goto err;
|
|
}
|
|
|
|
num_bde = lpfc_bg_setup_bpl_prot(phba, scsi_cmnd, bpl,
|
|
datasegcnt, protsegcnt);
|
|
/* we should have 3 or more entries in buffer list */
|
|
if ((num_bde < 3) ||
|
|
(num_bde > phba->cfg_total_seg_cnt)) {
|
|
ret = 2;
|
|
goto err;
|
|
}
|
|
break;
|
|
|
|
case LPFC_PG_TYPE_INVALID:
|
|
default:
|
|
scsi_dma_unmap(scsi_cmnd);
|
|
lpfc_cmd->seg_cnt = 0;
|
|
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
|
|
"9022 Unexpected protection group %i\n",
|
|
prot_group_type);
|
|
return 2;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Finish initializing those IOCB fields that are dependent on the
|
|
* scsi_cmnd request_buffer. Note that the bdeSize is explicitly
|
|
* reinitialized since all iocb memory resources are used many times
|
|
* for transmit, receive, and continuation bpl's.
|
|
*/
|
|
iocb_cmd->un.fcpi64.bdl.bdeSize = (2 * sizeof(struct ulp_bde64));
|
|
iocb_cmd->un.fcpi64.bdl.bdeSize += (num_bde * sizeof(struct ulp_bde64));
|
|
iocb_cmd->ulpBdeCount = 1;
|
|
iocb_cmd->ulpLe = 1;
|
|
|
|
fcpdl = lpfc_bg_scsi_adjust_dl(phba, lpfc_cmd);
|
|
fcp_cmnd->fcpDl = be32_to_cpu(fcpdl);
|
|
|
|
/*
|
|
* Due to difference in data length between DIF/non-DIF paths,
|
|
* we need to set word 4 of IOCB here
|
|
*/
|
|
iocb_cmd->un.fcpi.fcpi_parm = fcpdl;
|
|
|
|
/*
|
|
* For First burst, we may need to adjust the initial transfer
|
|
* length for DIF
|
|
*/
|
|
if (iocb_cmd->un.fcpi.fcpi_XRdy &&
|
|
(fcpdl < vport->cfg_first_burst_size))
|
|
iocb_cmd->un.fcpi.fcpi_XRdy = fcpdl;
|
|
|
|
return 0;
|
|
err:
|
|
if (lpfc_cmd->seg_cnt)
|
|
scsi_dma_unmap(scsi_cmnd);
|
|
if (lpfc_cmd->prot_seg_cnt)
|
|
dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(scsi_cmnd),
|
|
scsi_prot_sg_count(scsi_cmnd),
|
|
scsi_cmnd->sc_data_direction);
|
|
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
|
|
"9023 Cannot setup S/G List for HBA"
|
|
"IO segs %d/%d BPL %d SCSI %d: %d %d\n",
|
|
lpfc_cmd->seg_cnt, lpfc_cmd->prot_seg_cnt,
|
|
phba->cfg_total_seg_cnt, phba->cfg_sg_seg_cnt,
|
|
prot_group_type, num_bde);
|
|
|
|
lpfc_cmd->seg_cnt = 0;
|
|
lpfc_cmd->prot_seg_cnt = 0;
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* This function calcuates the T10 DIF guard tag
|
|
* on the specified data using a CRC algorithmn
|
|
* using crc_t10dif.
|
|
*/
|
|
static uint16_t
|
|
lpfc_bg_crc(uint8_t *data, int count)
|
|
{
|
|
uint16_t crc = 0;
|
|
uint16_t x;
|
|
|
|
crc = crc_t10dif(data, count);
|
|
x = cpu_to_be16(crc);
|
|
return x;
|
|
}
|
|
|
|
/*
|
|
* This function calcuates the T10 DIF guard tag
|
|
* on the specified data using a CSUM algorithmn
|
|
* using ip_compute_csum.
|
|
*/
|
|
static uint16_t
|
|
lpfc_bg_csum(uint8_t *data, int count)
|
|
{
|
|
uint16_t ret;
|
|
|
|
ret = ip_compute_csum(data, count);
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* This function examines the protection data to try to determine
|
|
* what type of T10-DIF error occurred.
|
|
*/
|
|
static void
|
|
lpfc_calc_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd)
|
|
{
|
|
struct scatterlist *sgpe; /* s/g prot entry */
|
|
struct scatterlist *sgde; /* s/g data entry */
|
|
struct scsi_cmnd *cmd = lpfc_cmd->pCmd;
|
|
struct scsi_dif_tuple *src = NULL;
|
|
uint8_t *data_src = NULL;
|
|
uint16_t guard_tag;
|
|
uint16_t start_app_tag, app_tag;
|
|
uint32_t start_ref_tag, ref_tag;
|
|
int prot, protsegcnt;
|
|
int err_type, len, data_len;
|
|
int chk_ref, chk_app, chk_guard;
|
|
uint16_t sum;
|
|
unsigned blksize;
|
|
|
|
err_type = BGS_GUARD_ERR_MASK;
|
|
sum = 0;
|
|
guard_tag = 0;
|
|
|
|
/* First check to see if there is protection data to examine */
|
|
prot = scsi_get_prot_op(cmd);
|
|
if ((prot == SCSI_PROT_READ_STRIP) ||
|
|
(prot == SCSI_PROT_WRITE_INSERT) ||
|
|
(prot == SCSI_PROT_NORMAL))
|
|
goto out;
|
|
|
|
/* Currently the driver just supports ref_tag and guard_tag checking */
|
|
chk_ref = 1;
|
|
chk_app = 0;
|
|
chk_guard = 0;
|
|
|
|
/* Setup a ptr to the protection data provided by the SCSI host */
|
|
sgpe = scsi_prot_sglist(cmd);
|
|
protsegcnt = lpfc_cmd->prot_seg_cnt;
|
|
|
|
if (sgpe && protsegcnt) {
|
|
|
|
/*
|
|
* We will only try to verify guard tag if the segment
|
|
* data length is a multiple of the blksize.
|
|
*/
|
|
sgde = scsi_sglist(cmd);
|
|
blksize = scsi_prot_interval(cmd);
|
|
data_src = (uint8_t *)sg_virt(sgde);
|
|
data_len = sgde->length;
|
|
if ((data_len & (blksize - 1)) == 0)
|
|
chk_guard = 1;
|
|
|
|
src = (struct scsi_dif_tuple *)sg_virt(sgpe);
|
|
start_ref_tag = scsi_prot_ref_tag(cmd);
|
|
start_app_tag = src->app_tag;
|
|
len = sgpe->length;
|
|
while (src && protsegcnt) {
|
|
while (len) {
|
|
|
|
/*
|
|
* First check to see if a protection data
|
|
* check is valid
|
|
*/
|
|
if ((src->ref_tag == T10_PI_REF_ESCAPE) ||
|
|
(src->app_tag == T10_PI_APP_ESCAPE)) {
|
|
start_ref_tag++;
|
|
goto skipit;
|
|
}
|
|
|
|
/* First Guard Tag checking */
|
|
if (chk_guard) {
|
|
guard_tag = src->guard_tag;
|
|
if (cmd->prot_flags
|
|
& SCSI_PROT_IP_CHECKSUM)
|
|
sum = lpfc_bg_csum(data_src,
|
|
blksize);
|
|
else
|
|
sum = lpfc_bg_crc(data_src,
|
|
blksize);
|
|
if ((guard_tag != sum)) {
|
|
err_type = BGS_GUARD_ERR_MASK;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
/* Reference Tag checking */
|
|
ref_tag = be32_to_cpu(src->ref_tag);
|
|
if (chk_ref && (ref_tag != start_ref_tag)) {
|
|
err_type = BGS_REFTAG_ERR_MASK;
|
|
goto out;
|
|
}
|
|
start_ref_tag++;
|
|
|
|
/* App Tag checking */
|
|
app_tag = src->app_tag;
|
|
if (chk_app && (app_tag != start_app_tag)) {
|
|
err_type = BGS_APPTAG_ERR_MASK;
|
|
goto out;
|
|
}
|
|
skipit:
|
|
len -= sizeof(struct scsi_dif_tuple);
|
|
if (len < 0)
|
|
len = 0;
|
|
src++;
|
|
|
|
data_src += blksize;
|
|
data_len -= blksize;
|
|
|
|
/*
|
|
* Are we at the end of the Data segment?
|
|
* The data segment is only used for Guard
|
|
* tag checking.
|
|
*/
|
|
if (chk_guard && (data_len == 0)) {
|
|
chk_guard = 0;
|
|
sgde = sg_next(sgde);
|
|
if (!sgde)
|
|
goto out;
|
|
|
|
data_src = (uint8_t *)sg_virt(sgde);
|
|
data_len = sgde->length;
|
|
if ((data_len & (blksize - 1)) == 0)
|
|
chk_guard = 1;
|
|
}
|
|
}
|
|
|
|
/* Goto the next Protection data segment */
|
|
sgpe = sg_next(sgpe);
|
|
if (sgpe) {
|
|
src = (struct scsi_dif_tuple *)sg_virt(sgpe);
|
|
len = sgpe->length;
|
|
} else {
|
|
src = NULL;
|
|
}
|
|
protsegcnt--;
|
|
}
|
|
}
|
|
out:
|
|
if (err_type == BGS_GUARD_ERR_MASK) {
|
|
scsi_build_sense(cmd, 1, ILLEGAL_REQUEST, 0x10, 0x1);
|
|
set_host_byte(cmd, DID_ABORT);
|
|
phba->bg_guard_err_cnt++;
|
|
lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
|
|
"9069 BLKGRD: reftag %x grd_tag err %x != %x\n",
|
|
scsi_prot_ref_tag(cmd),
|
|
sum, guard_tag);
|
|
|
|
} else if (err_type == BGS_REFTAG_ERR_MASK) {
|
|
scsi_build_sense(cmd, 1, ILLEGAL_REQUEST, 0x10, 0x3);
|
|
set_host_byte(cmd, DID_ABORT);
|
|
|
|
phba->bg_reftag_err_cnt++;
|
|
lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
|
|
"9066 BLKGRD: reftag %x ref_tag err %x != %x\n",
|
|
scsi_prot_ref_tag(cmd),
|
|
ref_tag, start_ref_tag);
|
|
|
|
} else if (err_type == BGS_APPTAG_ERR_MASK) {
|
|
scsi_build_sense(cmd, 1, ILLEGAL_REQUEST, 0x10, 0x2);
|
|
set_host_byte(cmd, DID_ABORT);
|
|
|
|
phba->bg_apptag_err_cnt++;
|
|
lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
|
|
"9041 BLKGRD: reftag %x app_tag err %x != %x\n",
|
|
scsi_prot_ref_tag(cmd),
|
|
app_tag, start_app_tag);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* This function checks for BlockGuard errors detected by
|
|
* the HBA. In case of errors, the ASC/ASCQ fields in the
|
|
* sense buffer will be set accordingly, paired with
|
|
* ILLEGAL_REQUEST to signal to the kernel that the HBA
|
|
* detected corruption.
|
|
*
|
|
* Returns:
|
|
* 0 - No error found
|
|
* 1 - BlockGuard error found
|
|
* -1 - Internal error (bad profile, ...etc)
|
|
*/
|
|
static int
|
|
lpfc_parse_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd,
|
|
struct lpfc_iocbq *pIocbOut)
|
|
{
|
|
struct scsi_cmnd *cmd = lpfc_cmd->pCmd;
|
|
struct sli3_bg_fields *bgf;
|
|
int ret = 0;
|
|
struct lpfc_wcqe_complete *wcqe;
|
|
u32 status;
|
|
u32 bghm = 0;
|
|
u32 bgstat = 0;
|
|
u64 failing_sector = 0;
|
|
|
|
if (phba->sli_rev == LPFC_SLI_REV4) {
|
|
wcqe = &pIocbOut->wcqe_cmpl;
|
|
status = bf_get(lpfc_wcqe_c_status, wcqe);
|
|
|
|
if (status == CQE_STATUS_DI_ERROR) {
|
|
/* Guard Check failed */
|
|
if (bf_get(lpfc_wcqe_c_bg_ge, wcqe))
|
|
bgstat |= BGS_GUARD_ERR_MASK;
|
|
|
|
/* AppTag Check failed */
|
|
if (bf_get(lpfc_wcqe_c_bg_ae, wcqe))
|
|
bgstat |= BGS_APPTAG_ERR_MASK;
|
|
|
|
/* RefTag Check failed */
|
|
if (bf_get(lpfc_wcqe_c_bg_re, wcqe))
|
|
bgstat |= BGS_REFTAG_ERR_MASK;
|
|
|
|
/* Check to see if there was any good data before the
|
|
* error
|
|
*/
|
|
if (bf_get(lpfc_wcqe_c_bg_tdpv, wcqe)) {
|
|
bgstat |= BGS_HI_WATER_MARK_PRESENT_MASK;
|
|
bghm = wcqe->total_data_placed;
|
|
}
|
|
|
|
/*
|
|
* Set ALL the error bits to indicate we don't know what
|
|
* type of error it is.
|
|
*/
|
|
if (!bgstat)
|
|
bgstat |= (BGS_REFTAG_ERR_MASK |
|
|
BGS_APPTAG_ERR_MASK |
|
|
BGS_GUARD_ERR_MASK);
|
|
}
|
|
|
|
} else {
|
|
bgf = &pIocbOut->iocb.unsli3.sli3_bg;
|
|
bghm = bgf->bghm;
|
|
bgstat = bgf->bgstat;
|
|
}
|
|
|
|
if (lpfc_bgs_get_invalid_prof(bgstat)) {
|
|
cmd->result = DID_ERROR << 16;
|
|
lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
|
|
"9072 BLKGRD: Invalid BG Profile in cmd "
|
|
"0x%x reftag 0x%x blk cnt 0x%x "
|
|
"bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
|
|
scsi_prot_ref_tag(cmd),
|
|
scsi_logical_block_count(cmd), bgstat, bghm);
|
|
ret = (-1);
|
|
goto out;
|
|
}
|
|
|
|
if (lpfc_bgs_get_uninit_dif_block(bgstat)) {
|
|
cmd->result = DID_ERROR << 16;
|
|
lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
|
|
"9073 BLKGRD: Invalid BG PDIF Block in cmd "
|
|
"0x%x reftag 0x%x blk cnt 0x%x "
|
|
"bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
|
|
scsi_prot_ref_tag(cmd),
|
|
scsi_logical_block_count(cmd), bgstat, bghm);
|
|
ret = (-1);
|
|
goto out;
|
|
}
|
|
|
|
if (lpfc_bgs_get_guard_err(bgstat)) {
|
|
ret = 1;
|
|
scsi_build_sense(cmd, 1, ILLEGAL_REQUEST, 0x10, 0x1);
|
|
set_host_byte(cmd, DID_ABORT);
|
|
phba->bg_guard_err_cnt++;
|
|
lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
|
|
"9055 BLKGRD: Guard Tag error in cmd "
|
|
"0x%x reftag 0x%x blk cnt 0x%x "
|
|
"bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
|
|
scsi_prot_ref_tag(cmd),
|
|
scsi_logical_block_count(cmd), bgstat, bghm);
|
|
}
|
|
|
|
if (lpfc_bgs_get_reftag_err(bgstat)) {
|
|
ret = 1;
|
|
scsi_build_sense(cmd, 1, ILLEGAL_REQUEST, 0x10, 0x3);
|
|
set_host_byte(cmd, DID_ABORT);
|
|
phba->bg_reftag_err_cnt++;
|
|
lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
|
|
"9056 BLKGRD: Ref Tag error in cmd "
|
|
"0x%x reftag 0x%x blk cnt 0x%x "
|
|
"bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
|
|
scsi_prot_ref_tag(cmd),
|
|
scsi_logical_block_count(cmd), bgstat, bghm);
|
|
}
|
|
|
|
if (lpfc_bgs_get_apptag_err(bgstat)) {
|
|
ret = 1;
|
|
scsi_build_sense(cmd, 1, ILLEGAL_REQUEST, 0x10, 0x2);
|
|
set_host_byte(cmd, DID_ABORT);
|
|
phba->bg_apptag_err_cnt++;
|
|
lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
|
|
"9061 BLKGRD: App Tag error in cmd "
|
|
"0x%x reftag 0x%x blk cnt 0x%x "
|
|
"bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
|
|
scsi_prot_ref_tag(cmd),
|
|
scsi_logical_block_count(cmd), bgstat, bghm);
|
|
}
|
|
|
|
if (lpfc_bgs_get_hi_water_mark_present(bgstat)) {
|
|
/*
|
|
* setup sense data descriptor 0 per SPC-4 as an information
|
|
* field, and put the failing LBA in it.
|
|
* This code assumes there was also a guard/app/ref tag error
|
|
* indication.
|
|
*/
|
|
cmd->sense_buffer[7] = 0xc; /* Additional sense length */
|
|
cmd->sense_buffer[8] = 0; /* Information descriptor type */
|
|
cmd->sense_buffer[9] = 0xa; /* Additional descriptor length */
|
|
cmd->sense_buffer[10] = 0x80; /* Validity bit */
|
|
|
|
/* bghm is a "on the wire" FC frame based count */
|
|
switch (scsi_get_prot_op(cmd)) {
|
|
case SCSI_PROT_READ_INSERT:
|
|
case SCSI_PROT_WRITE_STRIP:
|
|
bghm /= cmd->device->sector_size;
|
|
break;
|
|
case SCSI_PROT_READ_STRIP:
|
|
case SCSI_PROT_WRITE_INSERT:
|
|
case SCSI_PROT_READ_PASS:
|
|
case SCSI_PROT_WRITE_PASS:
|
|
bghm /= (cmd->device->sector_size +
|
|
sizeof(struct scsi_dif_tuple));
|
|
break;
|
|
}
|
|
|
|
failing_sector = scsi_get_lba(cmd);
|
|
failing_sector += bghm;
|
|
|
|
/* Descriptor Information */
|
|
put_unaligned_be64(failing_sector, &cmd->sense_buffer[12]);
|
|
}
|
|
|
|
if (!ret) {
|
|
/* No error was reported - problem in FW? */
|
|
lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
|
|
"9057 BLKGRD: Unknown error in cmd "
|
|
"0x%x reftag 0x%x blk cnt 0x%x "
|
|
"bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
|
|
scsi_prot_ref_tag(cmd),
|
|
scsi_logical_block_count(cmd), bgstat, bghm);
|
|
|
|
/* Calculate what type of error it was */
|
|
lpfc_calc_bg_err(phba, lpfc_cmd);
|
|
}
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* lpfc_scsi_prep_dma_buf_s4 - DMA mapping for scsi buffer to SLI4 IF spec
|
|
* @phba: The Hba for which this call is being executed.
|
|
* @lpfc_cmd: The scsi buffer which is going to be mapped.
|
|
*
|
|
* This routine does the pci dma mapping for scatter-gather list of scsi cmnd
|
|
* field of @lpfc_cmd for device with SLI-4 interface spec.
|
|
*
|
|
* Return codes:
|
|
* 2 - Error - Do not retry
|
|
* 1 - Error - Retry
|
|
* 0 - Success
|
|
**/
|
|
static int
|
|
lpfc_scsi_prep_dma_buf_s4(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd)
|
|
{
|
|
struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
|
|
struct scatterlist *sgel = NULL;
|
|
struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
|
|
struct sli4_sge *sgl = (struct sli4_sge *)lpfc_cmd->dma_sgl;
|
|
struct sli4_sge *first_data_sgl;
|
|
struct lpfc_iocbq *pwqeq = &lpfc_cmd->cur_iocbq;
|
|
struct lpfc_vport *vport = phba->pport;
|
|
union lpfc_wqe128 *wqe = &pwqeq->wqe;
|
|
dma_addr_t physaddr;
|
|
uint32_t dma_len;
|
|
uint32_t dma_offset = 0;
|
|
int nseg, i, j;
|
|
struct ulp_bde64 *bde;
|
|
bool lsp_just_set = false;
|
|
struct sli4_hybrid_sgl *sgl_xtra = NULL;
|
|
|
|
/*
|
|
* There are three possibilities here - use scatter-gather segment, use
|
|
* the single mapping, or neither. Start the lpfc command prep by
|
|
* bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first
|
|
* data bde entry.
|
|
*/
|
|
if (scsi_sg_count(scsi_cmnd)) {
|
|
/*
|
|
* The driver stores the segment count returned from dma_map_sg
|
|
* because this a count of dma-mappings used to map the use_sg
|
|
* pages. They are not guaranteed to be the same for those
|
|
* architectures that implement an IOMMU.
|
|
*/
|
|
|
|
nseg = scsi_dma_map(scsi_cmnd);
|
|
if (unlikely(nseg <= 0))
|
|
return 1;
|
|
sgl += 1;
|
|
/* clear the last flag in the fcp_rsp map entry */
|
|
sgl->word2 = le32_to_cpu(sgl->word2);
|
|
bf_set(lpfc_sli4_sge_last, sgl, 0);
|
|
sgl->word2 = cpu_to_le32(sgl->word2);
|
|
sgl += 1;
|
|
first_data_sgl = sgl;
|
|
lpfc_cmd->seg_cnt = nseg;
|
|
if (!phba->cfg_xpsgl &&
|
|
lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) {
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
|
|
"9074 BLKGRD:"
|
|
" %s: Too many sg segments from "
|
|
"dma_map_sg. Config %d, seg_cnt %d\n",
|
|
__func__, phba->cfg_sg_seg_cnt,
|
|
lpfc_cmd->seg_cnt);
|
|
WARN_ON_ONCE(lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt);
|
|
lpfc_cmd->seg_cnt = 0;
|
|
scsi_dma_unmap(scsi_cmnd);
|
|
return 2;
|
|
}
|
|
|
|
/*
|
|
* The driver established a maximum scatter-gather segment count
|
|
* during probe that limits the number of sg elements in any
|
|
* single scsi command. Just run through the seg_cnt and format
|
|
* the sge's.
|
|
* When using SLI-3 the driver will try to fit all the BDEs into
|
|
* the IOCB. If it can't then the BDEs get added to a BPL as it
|
|
* does for SLI-2 mode.
|
|
*/
|
|
|
|
/* for tracking segment boundaries */
|
|
sgel = scsi_sglist(scsi_cmnd);
|
|
j = 2;
|
|
for (i = 0; i < nseg; i++) {
|
|
sgl->word2 = 0;
|
|
if (nseg == 1) {
|
|
bf_set(lpfc_sli4_sge_last, sgl, 1);
|
|
bf_set(lpfc_sli4_sge_type, sgl,
|
|
LPFC_SGE_TYPE_DATA);
|
|
} else {
|
|
bf_set(lpfc_sli4_sge_last, sgl, 0);
|
|
|
|
/* do we need to expand the segment */
|
|
if (!lsp_just_set &&
|
|
!((j + 1) % phba->border_sge_num) &&
|
|
((nseg - 1) != i)) {
|
|
/* set LSP type */
|
|
bf_set(lpfc_sli4_sge_type, sgl,
|
|
LPFC_SGE_TYPE_LSP);
|
|
|
|
sgl_xtra = lpfc_get_sgl_per_hdwq(
|
|
phba, lpfc_cmd);
|
|
|
|
if (unlikely(!sgl_xtra)) {
|
|
lpfc_cmd->seg_cnt = 0;
|
|
scsi_dma_unmap(scsi_cmnd);
|
|
return 1;
|
|
}
|
|
sgl->addr_lo = cpu_to_le32(putPaddrLow(
|
|
sgl_xtra->dma_phys_sgl));
|
|
sgl->addr_hi = cpu_to_le32(putPaddrHigh(
|
|
sgl_xtra->dma_phys_sgl));
|
|
|
|
} else {
|
|
bf_set(lpfc_sli4_sge_type, sgl,
|
|
LPFC_SGE_TYPE_DATA);
|
|
}
|
|
}
|
|
|
|
if (!(bf_get(lpfc_sli4_sge_type, sgl) &
|
|
LPFC_SGE_TYPE_LSP)) {
|
|
if ((nseg - 1) == i)
|
|
bf_set(lpfc_sli4_sge_last, sgl, 1);
|
|
|
|
physaddr = sg_dma_address(sgel);
|
|
dma_len = sg_dma_len(sgel);
|
|
sgl->addr_lo = cpu_to_le32(putPaddrLow(
|
|
physaddr));
|
|
sgl->addr_hi = cpu_to_le32(putPaddrHigh(
|
|
physaddr));
|
|
|
|
bf_set(lpfc_sli4_sge_offset, sgl, dma_offset);
|
|
sgl->word2 = cpu_to_le32(sgl->word2);
|
|
sgl->sge_len = cpu_to_le32(dma_len);
|
|
|
|
dma_offset += dma_len;
|
|
sgel = sg_next(sgel);
|
|
|
|
sgl++;
|
|
lsp_just_set = false;
|
|
|
|
} else {
|
|
sgl->word2 = cpu_to_le32(sgl->word2);
|
|
sgl->sge_len = cpu_to_le32(
|
|
phba->cfg_sg_dma_buf_size);
|
|
|
|
sgl = (struct sli4_sge *)sgl_xtra->dma_sgl;
|
|
i = i - 1;
|
|
|
|
lsp_just_set = true;
|
|
}
|
|
|
|
j++;
|
|
}
|
|
|
|
/* PBDE support for first data SGE only.
|
|
* For FCoE, we key off Performance Hints.
|
|
* For FC, we key off lpfc_enable_pbde.
|
|
*/
|
|
if (nseg == 1 &&
|
|
((phba->sli3_options & LPFC_SLI4_PERFH_ENABLED) ||
|
|
phba->cfg_enable_pbde)) {
|
|
/* Words 13-15 */
|
|
bde = (struct ulp_bde64 *)
|
|
&wqe->words[13];
|
|
bde->addrLow = first_data_sgl->addr_lo;
|
|
bde->addrHigh = first_data_sgl->addr_hi;
|
|
bde->tus.f.bdeSize =
|
|
le32_to_cpu(first_data_sgl->sge_len);
|
|
bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
|
|
bde->tus.w = cpu_to_le32(bde->tus.w);
|
|
|
|
/* Word 11 - set PBDE bit */
|
|
bf_set(wqe_pbde, &wqe->generic.wqe_com, 1);
|
|
} else {
|
|
memset(&wqe->words[13], 0, (sizeof(uint32_t) * 3));
|
|
/* Word 11 - PBDE bit disabled by default template */
|
|
}
|
|
} else {
|
|
sgl += 1;
|
|
/* set the last flag in the fcp_rsp map entry */
|
|
sgl->word2 = le32_to_cpu(sgl->word2);
|
|
bf_set(lpfc_sli4_sge_last, sgl, 1);
|
|
sgl->word2 = cpu_to_le32(sgl->word2);
|
|
|
|
if ((phba->sli3_options & LPFC_SLI4_PERFH_ENABLED) ||
|
|
phba->cfg_enable_pbde) {
|
|
bde = (struct ulp_bde64 *)
|
|
&wqe->words[13];
|
|
memset(bde, 0, (sizeof(uint32_t) * 3));
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Finish initializing those IOCB fields that are dependent on the
|
|
* scsi_cmnd request_buffer. Note that for SLI-2 the bdeSize is
|
|
* explicitly reinitialized.
|
|
* all iocb memory resources are reused.
|
|
*/
|
|
fcp_cmnd->fcpDl = cpu_to_be32(scsi_bufflen(scsi_cmnd));
|
|
/* Set first-burst provided it was successfully negotiated */
|
|
if (!(phba->hba_flag & HBA_FCOE_MODE) &&
|
|
vport->cfg_first_burst_size &&
|
|
scsi_cmnd->sc_data_direction == DMA_TO_DEVICE) {
|
|
u32 init_len, total_len;
|
|
|
|
total_len = be32_to_cpu(fcp_cmnd->fcpDl);
|
|
init_len = min(total_len, vport->cfg_first_burst_size);
|
|
|
|
/* Word 4 & 5 */
|
|
wqe->fcp_iwrite.initial_xfer_len = init_len;
|
|
wqe->fcp_iwrite.total_xfer_len = total_len;
|
|
} else {
|
|
/* Word 4 */
|
|
wqe->fcp_iwrite.total_xfer_len =
|
|
be32_to_cpu(fcp_cmnd->fcpDl);
|
|
}
|
|
|
|
/*
|
|
* If the OAS driver feature is enabled and the lun is enabled for
|
|
* OAS, set the oas iocb related flags.
|
|
*/
|
|
if ((phba->cfg_fof) && ((struct lpfc_device_data *)
|
|
scsi_cmnd->device->hostdata)->oas_enabled) {
|
|
lpfc_cmd->cur_iocbq.cmd_flag |= (LPFC_IO_OAS | LPFC_IO_FOF);
|
|
lpfc_cmd->cur_iocbq.priority = ((struct lpfc_device_data *)
|
|
scsi_cmnd->device->hostdata)->priority;
|
|
|
|
/* Word 10 */
|
|
bf_set(wqe_oas, &wqe->generic.wqe_com, 1);
|
|
bf_set(wqe_ccpe, &wqe->generic.wqe_com, 1);
|
|
|
|
if (lpfc_cmd->cur_iocbq.priority)
|
|
bf_set(wqe_ccp, &wqe->generic.wqe_com,
|
|
(lpfc_cmd->cur_iocbq.priority << 1));
|
|
else
|
|
bf_set(wqe_ccp, &wqe->generic.wqe_com,
|
|
(phba->cfg_XLanePriority << 1));
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* lpfc_bg_scsi_prep_dma_buf_s4 - DMA mapping for scsi buffer to SLI4 IF spec
|
|
* @phba: The Hba for which this call is being executed.
|
|
* @lpfc_cmd: The scsi buffer which is going to be mapped.
|
|
*
|
|
* This is the protection/DIF aware version of
|
|
* lpfc_scsi_prep_dma_buf(). It may be a good idea to combine the
|
|
* two functions eventually, but for now, it's here
|
|
* Return codes:
|
|
* 2 - Error - Do not retry
|
|
* 1 - Error - Retry
|
|
* 0 - Success
|
|
**/
|
|
static int
|
|
lpfc_bg_scsi_prep_dma_buf_s4(struct lpfc_hba *phba,
|
|
struct lpfc_io_buf *lpfc_cmd)
|
|
{
|
|
struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
|
|
struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
|
|
struct sli4_sge *sgl = (struct sli4_sge *)(lpfc_cmd->dma_sgl);
|
|
struct lpfc_iocbq *pwqeq = &lpfc_cmd->cur_iocbq;
|
|
union lpfc_wqe128 *wqe = &pwqeq->wqe;
|
|
uint32_t num_sge = 0;
|
|
int datasegcnt, protsegcnt, datadir = scsi_cmnd->sc_data_direction;
|
|
int prot_group_type = 0;
|
|
int fcpdl;
|
|
int ret = 1;
|
|
struct lpfc_vport *vport = phba->pport;
|
|
|
|
/*
|
|
* Start the lpfc command prep by bumping the sgl beyond fcp_cmnd
|
|
* fcp_rsp regions to the first data sge entry
|
|
*/
|
|
if (scsi_sg_count(scsi_cmnd)) {
|
|
/*
|
|
* The driver stores the segment count returned from dma_map_sg
|
|
* because this a count of dma-mappings used to map the use_sg
|
|
* pages. They are not guaranteed to be the same for those
|
|
* architectures that implement an IOMMU.
|
|
*/
|
|
datasegcnt = dma_map_sg(&phba->pcidev->dev,
|
|
scsi_sglist(scsi_cmnd),
|
|
scsi_sg_count(scsi_cmnd), datadir);
|
|
if (unlikely(!datasegcnt))
|
|
return 1;
|
|
|
|
sgl += 1;
|
|
/* clear the last flag in the fcp_rsp map entry */
|
|
sgl->word2 = le32_to_cpu(sgl->word2);
|
|
bf_set(lpfc_sli4_sge_last, sgl, 0);
|
|
sgl->word2 = cpu_to_le32(sgl->word2);
|
|
|
|
sgl += 1;
|
|
lpfc_cmd->seg_cnt = datasegcnt;
|
|
|
|
/* First check if data segment count from SCSI Layer is good */
|
|
if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt &&
|
|
!phba->cfg_xpsgl) {
|
|
WARN_ON_ONCE(lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt);
|
|
ret = 2;
|
|
goto err;
|
|
}
|
|
|
|
prot_group_type = lpfc_prot_group_type(phba, scsi_cmnd);
|
|
|
|
switch (prot_group_type) {
|
|
case LPFC_PG_TYPE_NO_DIF:
|
|
/* Here we need to add a DISEED to the count */
|
|
if (((lpfc_cmd->seg_cnt + 1) >
|
|
phba->cfg_total_seg_cnt) &&
|
|
!phba->cfg_xpsgl) {
|
|
ret = 2;
|
|
goto err;
|
|
}
|
|
|
|
num_sge = lpfc_bg_setup_sgl(phba, scsi_cmnd, sgl,
|
|
datasegcnt, lpfc_cmd);
|
|
|
|
/* we should have 2 or more entries in buffer list */
|
|
if (num_sge < 2) {
|
|
ret = 2;
|
|
goto err;
|
|
}
|
|
break;
|
|
|
|
case LPFC_PG_TYPE_DIF_BUF:
|
|
/*
|
|
* This type indicates that protection buffers are
|
|
* passed to the driver, so that needs to be prepared
|
|
* for DMA
|
|
*/
|
|
protsegcnt = dma_map_sg(&phba->pcidev->dev,
|
|
scsi_prot_sglist(scsi_cmnd),
|
|
scsi_prot_sg_count(scsi_cmnd), datadir);
|
|
if (unlikely(!protsegcnt)) {
|
|
scsi_dma_unmap(scsi_cmnd);
|
|
return 1;
|
|
}
|
|
|
|
lpfc_cmd->prot_seg_cnt = protsegcnt;
|
|
/*
|
|
* There is a minimun of 3 SGEs used for every
|
|
* protection data segment.
|
|
*/
|
|
if (((lpfc_cmd->prot_seg_cnt * 3) >
|
|
(phba->cfg_total_seg_cnt - 2)) &&
|
|
!phba->cfg_xpsgl) {
|
|
ret = 2;
|
|
goto err;
|
|
}
|
|
|
|
num_sge = lpfc_bg_setup_sgl_prot(phba, scsi_cmnd, sgl,
|
|
datasegcnt, protsegcnt, lpfc_cmd);
|
|
|
|
/* we should have 3 or more entries in buffer list */
|
|
if (num_sge < 3 ||
|
|
(num_sge > phba->cfg_total_seg_cnt &&
|
|
!phba->cfg_xpsgl)) {
|
|
ret = 2;
|
|
goto err;
|
|
}
|
|
break;
|
|
|
|
case LPFC_PG_TYPE_INVALID:
|
|
default:
|
|
scsi_dma_unmap(scsi_cmnd);
|
|
lpfc_cmd->seg_cnt = 0;
|
|
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
|
|
"9083 Unexpected protection group %i\n",
|
|
prot_group_type);
|
|
return 2;
|
|
}
|
|
}
|
|
|
|
switch (scsi_get_prot_op(scsi_cmnd)) {
|
|
case SCSI_PROT_WRITE_STRIP:
|
|
case SCSI_PROT_READ_STRIP:
|
|
lpfc_cmd->cur_iocbq.cmd_flag |= LPFC_IO_DIF_STRIP;
|
|
break;
|
|
case SCSI_PROT_WRITE_INSERT:
|
|
case SCSI_PROT_READ_INSERT:
|
|
lpfc_cmd->cur_iocbq.cmd_flag |= LPFC_IO_DIF_INSERT;
|
|
break;
|
|
case SCSI_PROT_WRITE_PASS:
|
|
case SCSI_PROT_READ_PASS:
|
|
lpfc_cmd->cur_iocbq.cmd_flag |= LPFC_IO_DIF_PASS;
|
|
break;
|
|
}
|
|
|
|
fcpdl = lpfc_bg_scsi_adjust_dl(phba, lpfc_cmd);
|
|
fcp_cmnd->fcpDl = be32_to_cpu(fcpdl);
|
|
|
|
/* Set first-burst provided it was successfully negotiated */
|
|
if (!(phba->hba_flag & HBA_FCOE_MODE) &&
|
|
vport->cfg_first_burst_size &&
|
|
scsi_cmnd->sc_data_direction == DMA_TO_DEVICE) {
|
|
u32 init_len, total_len;
|
|
|
|
total_len = be32_to_cpu(fcp_cmnd->fcpDl);
|
|
init_len = min(total_len, vport->cfg_first_burst_size);
|
|
|
|
/* Word 4 & 5 */
|
|
wqe->fcp_iwrite.initial_xfer_len = init_len;
|
|
wqe->fcp_iwrite.total_xfer_len = total_len;
|
|
} else {
|
|
/* Word 4 */
|
|
wqe->fcp_iwrite.total_xfer_len =
|
|
be32_to_cpu(fcp_cmnd->fcpDl);
|
|
}
|
|
|
|
/*
|
|
* If the OAS driver feature is enabled and the lun is enabled for
|
|
* OAS, set the oas iocb related flags.
|
|
*/
|
|
if ((phba->cfg_fof) && ((struct lpfc_device_data *)
|
|
scsi_cmnd->device->hostdata)->oas_enabled) {
|
|
lpfc_cmd->cur_iocbq.cmd_flag |= (LPFC_IO_OAS | LPFC_IO_FOF);
|
|
|
|
/* Word 10 */
|
|
bf_set(wqe_oas, &wqe->generic.wqe_com, 1);
|
|
bf_set(wqe_ccpe, &wqe->generic.wqe_com, 1);
|
|
bf_set(wqe_ccp, &wqe->generic.wqe_com,
|
|
(phba->cfg_XLanePriority << 1));
|
|
}
|
|
|
|
/* Word 7. DIF Flags */
|
|
if (lpfc_cmd->cur_iocbq.cmd_flag & LPFC_IO_DIF_PASS)
|
|
bf_set(wqe_dif, &wqe->generic.wqe_com, LPFC_WQE_DIF_PASSTHRU);
|
|
else if (lpfc_cmd->cur_iocbq.cmd_flag & LPFC_IO_DIF_STRIP)
|
|
bf_set(wqe_dif, &wqe->generic.wqe_com, LPFC_WQE_DIF_STRIP);
|
|
else if (lpfc_cmd->cur_iocbq.cmd_flag & LPFC_IO_DIF_INSERT)
|
|
bf_set(wqe_dif, &wqe->generic.wqe_com, LPFC_WQE_DIF_INSERT);
|
|
|
|
lpfc_cmd->cur_iocbq.cmd_flag &= ~(LPFC_IO_DIF_PASS |
|
|
LPFC_IO_DIF_STRIP | LPFC_IO_DIF_INSERT);
|
|
|
|
return 0;
|
|
err:
|
|
if (lpfc_cmd->seg_cnt)
|
|
scsi_dma_unmap(scsi_cmnd);
|
|
if (lpfc_cmd->prot_seg_cnt)
|
|
dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(scsi_cmnd),
|
|
scsi_prot_sg_count(scsi_cmnd),
|
|
scsi_cmnd->sc_data_direction);
|
|
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
|
|
"9084 Cannot setup S/G List for HBA "
|
|
"IO segs %d/%d SGL %d SCSI %d: %d %d %d\n",
|
|
lpfc_cmd->seg_cnt, lpfc_cmd->prot_seg_cnt,
|
|
phba->cfg_total_seg_cnt, phba->cfg_sg_seg_cnt,
|
|
prot_group_type, num_sge, ret);
|
|
|
|
lpfc_cmd->seg_cnt = 0;
|
|
lpfc_cmd->prot_seg_cnt = 0;
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* lpfc_scsi_prep_dma_buf - Wrapper function for DMA mapping of scsi buffer
|
|
* @phba: The Hba for which this call is being executed.
|
|
* @lpfc_cmd: The scsi buffer which is going to be mapped.
|
|
*
|
|
* This routine wraps the actual DMA mapping function pointer from the
|
|
* lpfc_hba struct.
|
|
*
|
|
* Return codes:
|
|
* 1 - Error
|
|
* 0 - Success
|
|
**/
|
|
static inline int
|
|
lpfc_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd)
|
|
{
|
|
return phba->lpfc_scsi_prep_dma_buf(phba, lpfc_cmd);
|
|
}
|
|
|
|
/**
|
|
* lpfc_bg_scsi_prep_dma_buf - Wrapper function for DMA mapping of scsi buffer
|
|
* using BlockGuard.
|
|
* @phba: The Hba for which this call is being executed.
|
|
* @lpfc_cmd: The scsi buffer which is going to be mapped.
|
|
*
|
|
* This routine wraps the actual DMA mapping function pointer from the
|
|
* lpfc_hba struct.
|
|
*
|
|
* Return codes:
|
|
* 1 - Error
|
|
* 0 - Success
|
|
**/
|
|
static inline int
|
|
lpfc_bg_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd)
|
|
{
|
|
return phba->lpfc_bg_scsi_prep_dma_buf(phba, lpfc_cmd);
|
|
}
|
|
|
|
/**
|
|
* lpfc_scsi_prep_cmnd_buf - Wrapper function for IOCB/WQE mapping of scsi
|
|
* buffer
|
|
* @vport: Pointer to vport object.
|
|
* @lpfc_cmd: The scsi buffer which is going to be mapped.
|
|
* @tmo: Timeout value for IO
|
|
*
|
|
* This routine initializes IOCB/WQE data structure from scsi command
|
|
*
|
|
* Return codes:
|
|
* 1 - Error
|
|
* 0 - Success
|
|
**/
|
|
static inline int
|
|
lpfc_scsi_prep_cmnd_buf(struct lpfc_vport *vport, struct lpfc_io_buf *lpfc_cmd,
|
|
uint8_t tmo)
|
|
{
|
|
return vport->phba->lpfc_scsi_prep_cmnd_buf(vport, lpfc_cmd, tmo);
|
|
}
|
|
|
|
/**
|
|
* lpfc_send_scsi_error_event - Posts an event when there is SCSI error
|
|
* @phba: Pointer to hba context object.
|
|
* @vport: Pointer to vport object.
|
|
* @lpfc_cmd: Pointer to lpfc scsi command which reported the error.
|
|
* @fcpi_parm: FCP Initiator parameter.
|
|
*
|
|
* This function posts an event when there is a SCSI command reporting
|
|
* error from the scsi device.
|
|
**/
|
|
static void
|
|
lpfc_send_scsi_error_event(struct lpfc_hba *phba, struct lpfc_vport *vport,
|
|
struct lpfc_io_buf *lpfc_cmd, uint32_t fcpi_parm) {
|
|
struct scsi_cmnd *cmnd = lpfc_cmd->pCmd;
|
|
struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp;
|
|
uint32_t resp_info = fcprsp->rspStatus2;
|
|
uint32_t scsi_status = fcprsp->rspStatus3;
|
|
struct lpfc_fast_path_event *fast_path_evt = NULL;
|
|
struct lpfc_nodelist *pnode = lpfc_cmd->rdata->pnode;
|
|
unsigned long flags;
|
|
|
|
if (!pnode)
|
|
return;
|
|
|
|
/* If there is queuefull or busy condition send a scsi event */
|
|
if ((cmnd->result == SAM_STAT_TASK_SET_FULL) ||
|
|
(cmnd->result == SAM_STAT_BUSY)) {
|
|
fast_path_evt = lpfc_alloc_fast_evt(phba);
|
|
if (!fast_path_evt)
|
|
return;
|
|
fast_path_evt->un.scsi_evt.event_type =
|
|
FC_REG_SCSI_EVENT;
|
|
fast_path_evt->un.scsi_evt.subcategory =
|
|
(cmnd->result == SAM_STAT_TASK_SET_FULL) ?
|
|
LPFC_EVENT_QFULL : LPFC_EVENT_DEVBSY;
|
|
fast_path_evt->un.scsi_evt.lun = cmnd->device->lun;
|
|
memcpy(&fast_path_evt->un.scsi_evt.wwpn,
|
|
&pnode->nlp_portname, sizeof(struct lpfc_name));
|
|
memcpy(&fast_path_evt->un.scsi_evt.wwnn,
|
|
&pnode->nlp_nodename, sizeof(struct lpfc_name));
|
|
} else if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen &&
|
|
((cmnd->cmnd[0] == READ_10) || (cmnd->cmnd[0] == WRITE_10))) {
|
|
fast_path_evt = lpfc_alloc_fast_evt(phba);
|
|
if (!fast_path_evt)
|
|
return;
|
|
fast_path_evt->un.check_cond_evt.scsi_event.event_type =
|
|
FC_REG_SCSI_EVENT;
|
|
fast_path_evt->un.check_cond_evt.scsi_event.subcategory =
|
|
LPFC_EVENT_CHECK_COND;
|
|
fast_path_evt->un.check_cond_evt.scsi_event.lun =
|
|
cmnd->device->lun;
|
|
memcpy(&fast_path_evt->un.check_cond_evt.scsi_event.wwpn,
|
|
&pnode->nlp_portname, sizeof(struct lpfc_name));
|
|
memcpy(&fast_path_evt->un.check_cond_evt.scsi_event.wwnn,
|
|
&pnode->nlp_nodename, sizeof(struct lpfc_name));
|
|
fast_path_evt->un.check_cond_evt.sense_key =
|
|
cmnd->sense_buffer[2] & 0xf;
|
|
fast_path_evt->un.check_cond_evt.asc = cmnd->sense_buffer[12];
|
|
fast_path_evt->un.check_cond_evt.ascq = cmnd->sense_buffer[13];
|
|
} else if ((cmnd->sc_data_direction == DMA_FROM_DEVICE) &&
|
|
fcpi_parm &&
|
|
((be32_to_cpu(fcprsp->rspResId) != fcpi_parm) ||
|
|
((scsi_status == SAM_STAT_GOOD) &&
|
|
!(resp_info & (RESID_UNDER | RESID_OVER))))) {
|
|
/*
|
|
* If status is good or resid does not match with fcp_param and
|
|
* there is valid fcpi_parm, then there is a read_check error
|
|
*/
|
|
fast_path_evt = lpfc_alloc_fast_evt(phba);
|
|
if (!fast_path_evt)
|
|
return;
|
|
fast_path_evt->un.read_check_error.header.event_type =
|
|
FC_REG_FABRIC_EVENT;
|
|
fast_path_evt->un.read_check_error.header.subcategory =
|
|
LPFC_EVENT_FCPRDCHKERR;
|
|
memcpy(&fast_path_evt->un.read_check_error.header.wwpn,
|
|
&pnode->nlp_portname, sizeof(struct lpfc_name));
|
|
memcpy(&fast_path_evt->un.read_check_error.header.wwnn,
|
|
&pnode->nlp_nodename, sizeof(struct lpfc_name));
|
|
fast_path_evt->un.read_check_error.lun = cmnd->device->lun;
|
|
fast_path_evt->un.read_check_error.opcode = cmnd->cmnd[0];
|
|
fast_path_evt->un.read_check_error.fcpiparam =
|
|
fcpi_parm;
|
|
} else
|
|
return;
|
|
|
|
fast_path_evt->vport = vport;
|
|
spin_lock_irqsave(&phba->hbalock, flags);
|
|
list_add_tail(&fast_path_evt->work_evt.evt_listp, &phba->work_list);
|
|
spin_unlock_irqrestore(&phba->hbalock, flags);
|
|
lpfc_worker_wake_up(phba);
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* lpfc_scsi_unprep_dma_buf - Un-map DMA mapping of SG-list for dev
|
|
* @phba: The HBA for which this call is being executed.
|
|
* @psb: The scsi buffer which is going to be un-mapped.
|
|
*
|
|
* This routine does DMA un-mapping of scatter gather list of scsi command
|
|
* field of @lpfc_cmd for device with SLI-3 interface spec.
|
|
**/
|
|
static void
|
|
lpfc_scsi_unprep_dma_buf(struct lpfc_hba *phba, struct lpfc_io_buf *psb)
|
|
{
|
|
/*
|
|
* There are only two special cases to consider. (1) the scsi command
|
|
* requested scatter-gather usage or (2) the scsi command allocated
|
|
* a request buffer, but did not request use_sg. There is a third
|
|
* case, but it does not require resource deallocation.
|
|
*/
|
|
if (psb->seg_cnt > 0)
|
|
scsi_dma_unmap(psb->pCmd);
|
|
if (psb->prot_seg_cnt > 0)
|
|
dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(psb->pCmd),
|
|
scsi_prot_sg_count(psb->pCmd),
|
|
psb->pCmd->sc_data_direction);
|
|
}
|
|
|
|
/**
|
|
* lpfc_unblock_requests - allow further commands to be queued.
|
|
* @phba: pointer to phba object
|
|
*
|
|
* For single vport, just call scsi_unblock_requests on physical port.
|
|
* For multiple vports, send scsi_unblock_requests for all the vports.
|
|
*/
|
|
void
|
|
lpfc_unblock_requests(struct lpfc_hba *phba)
|
|
{
|
|
struct lpfc_vport **vports;
|
|
struct Scsi_Host *shost;
|
|
int i;
|
|
|
|
if (phba->sli_rev == LPFC_SLI_REV4 &&
|
|
!phba->sli4_hba.max_cfg_param.vpi_used) {
|
|
shost = lpfc_shost_from_vport(phba->pport);
|
|
scsi_unblock_requests(shost);
|
|
return;
|
|
}
|
|
|
|
vports = lpfc_create_vport_work_array(phba);
|
|
if (vports != NULL)
|
|
for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
|
|
shost = lpfc_shost_from_vport(vports[i]);
|
|
scsi_unblock_requests(shost);
|
|
}
|
|
lpfc_destroy_vport_work_array(phba, vports);
|
|
}
|
|
|
|
/**
|
|
* lpfc_block_requests - prevent further commands from being queued.
|
|
* @phba: pointer to phba object
|
|
*
|
|
* For single vport, just call scsi_block_requests on physical port.
|
|
* For multiple vports, send scsi_block_requests for all the vports.
|
|
*/
|
|
void
|
|
lpfc_block_requests(struct lpfc_hba *phba)
|
|
{
|
|
struct lpfc_vport **vports;
|
|
struct Scsi_Host *shost;
|
|
int i;
|
|
|
|
if (atomic_read(&phba->cmf_stop_io))
|
|
return;
|
|
|
|
if (phba->sli_rev == LPFC_SLI_REV4 &&
|
|
!phba->sli4_hba.max_cfg_param.vpi_used) {
|
|
shost = lpfc_shost_from_vport(phba->pport);
|
|
scsi_block_requests(shost);
|
|
return;
|
|
}
|
|
|
|
vports = lpfc_create_vport_work_array(phba);
|
|
if (vports != NULL)
|
|
for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
|
|
shost = lpfc_shost_from_vport(vports[i]);
|
|
scsi_block_requests(shost);
|
|
}
|
|
lpfc_destroy_vport_work_array(phba, vports);
|
|
}
|
|
|
|
/**
|
|
* lpfc_update_cmf_cmpl - Adjust CMF counters for IO completion
|
|
* @phba: The HBA for which this call is being executed.
|
|
* @time: The latency of the IO that completed (in ns)
|
|
* @size: The size of the IO that completed
|
|
* @shost: SCSI host the IO completed on (NULL for a NVME IO)
|
|
*
|
|
* The routine adjusts the various Burst and Bandwidth counters used in
|
|
* Congestion management and E2E. If time is set to LPFC_CGN_NOT_SENT,
|
|
* that means the IO was never issued to the HBA, so this routine is
|
|
* just being called to cleanup the counter from a previous
|
|
* lpfc_update_cmf_cmd call.
|
|
*/
|
|
int
|
|
lpfc_update_cmf_cmpl(struct lpfc_hba *phba,
|
|
uint64_t time, uint32_t size, struct Scsi_Host *shost)
|
|
{
|
|
struct lpfc_cgn_stat *cgs;
|
|
|
|
if (time != LPFC_CGN_NOT_SENT) {
|
|
/* lat is ns coming in, save latency in us */
|
|
if (time < 1000)
|
|
time = 1;
|
|
else
|
|
time = div_u64(time + 500, 1000); /* round it */
|
|
|
|
cgs = per_cpu_ptr(phba->cmf_stat, raw_smp_processor_id());
|
|
atomic64_add(size, &cgs->rcv_bytes);
|
|
atomic64_add(time, &cgs->rx_latency);
|
|
atomic_inc(&cgs->rx_io_cnt);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* lpfc_update_cmf_cmd - Adjust CMF counters for IO submission
|
|
* @phba: The HBA for which this call is being executed.
|
|
* @size: The size of the IO that will be issued
|
|
*
|
|
* The routine adjusts the various Burst and Bandwidth counters used in
|
|
* Congestion management and E2E.
|
|
*/
|
|
int
|
|
lpfc_update_cmf_cmd(struct lpfc_hba *phba, uint32_t size)
|
|
{
|
|
uint64_t total;
|
|
struct lpfc_cgn_stat *cgs;
|
|
int cpu;
|
|
|
|
/* At this point we are either LPFC_CFG_MANAGED or LPFC_CFG_MONITOR */
|
|
if (phba->cmf_active_mode == LPFC_CFG_MANAGED &&
|
|
phba->cmf_max_bytes_per_interval) {
|
|
total = 0;
|
|
for_each_present_cpu(cpu) {
|
|
cgs = per_cpu_ptr(phba->cmf_stat, cpu);
|
|
total += atomic64_read(&cgs->total_bytes);
|
|
}
|
|
if (total >= phba->cmf_max_bytes_per_interval) {
|
|
if (!atomic_xchg(&phba->cmf_bw_wait, 1)) {
|
|
lpfc_block_requests(phba);
|
|
phba->cmf_last_ts =
|
|
lpfc_calc_cmf_latency(phba);
|
|
}
|
|
atomic_inc(&phba->cmf_busy);
|
|
return -EBUSY;
|
|
}
|
|
if (size > atomic_read(&phba->rx_max_read_cnt))
|
|
atomic_set(&phba->rx_max_read_cnt, size);
|
|
}
|
|
|
|
cgs = per_cpu_ptr(phba->cmf_stat, raw_smp_processor_id());
|
|
atomic64_add(size, &cgs->total_bytes);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* lpfc_handle_fcp_err - FCP response handler
|
|
* @vport: The virtual port for which this call is being executed.
|
|
* @lpfc_cmd: Pointer to lpfc_io_buf data structure.
|
|
* @fcpi_parm: FCP Initiator parameter.
|
|
*
|
|
* This routine is called to process response IOCB with status field
|
|
* IOSTAT_FCP_RSP_ERROR. This routine sets result field of scsi command
|
|
* based upon SCSI and FCP error.
|
|
**/
|
|
static void
|
|
lpfc_handle_fcp_err(struct lpfc_vport *vport, struct lpfc_io_buf *lpfc_cmd,
|
|
uint32_t fcpi_parm)
|
|
{
|
|
struct scsi_cmnd *cmnd = lpfc_cmd->pCmd;
|
|
struct fcp_cmnd *fcpcmd = lpfc_cmd->fcp_cmnd;
|
|
struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp;
|
|
uint32_t resp_info = fcprsp->rspStatus2;
|
|
uint32_t scsi_status = fcprsp->rspStatus3;
|
|
uint32_t *lp;
|
|
uint32_t host_status = DID_OK;
|
|
uint32_t rsplen = 0;
|
|
uint32_t fcpDl;
|
|
uint32_t logit = LOG_FCP | LOG_FCP_ERROR;
|
|
|
|
|
|
/*
|
|
* If this is a task management command, there is no
|
|
* scsi packet associated with this lpfc_cmd. The driver
|
|
* consumes it.
|
|
*/
|
|
if (fcpcmd->fcpCntl2) {
|
|
scsi_status = 0;
|
|
goto out;
|
|
}
|
|
|
|
if (resp_info & RSP_LEN_VALID) {
|
|
rsplen = be32_to_cpu(fcprsp->rspRspLen);
|
|
if (rsplen != 0 && rsplen != 4 && rsplen != 8) {
|
|
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
|
|
"2719 Invalid response length: "
|
|
"tgt x%x lun x%llx cmnd x%x rsplen "
|
|
"x%x\n", cmnd->device->id,
|
|
cmnd->device->lun, cmnd->cmnd[0],
|
|
rsplen);
|
|
host_status = DID_ERROR;
|
|
goto out;
|
|
}
|
|
if (fcprsp->rspInfo3 != RSP_NO_FAILURE) {
|
|
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
|
|
"2757 Protocol failure detected during "
|
|
"processing of FCP I/O op: "
|
|
"tgt x%x lun x%llx cmnd x%x rspInfo3 x%x\n",
|
|
cmnd->device->id,
|
|
cmnd->device->lun, cmnd->cmnd[0],
|
|
fcprsp->rspInfo3);
|
|
host_status = DID_ERROR;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen) {
|
|
uint32_t snslen = be32_to_cpu(fcprsp->rspSnsLen);
|
|
if (snslen > SCSI_SENSE_BUFFERSIZE)
|
|
snslen = SCSI_SENSE_BUFFERSIZE;
|
|
|
|
if (resp_info & RSP_LEN_VALID)
|
|
rsplen = be32_to_cpu(fcprsp->rspRspLen);
|
|
memcpy(cmnd->sense_buffer, &fcprsp->rspInfo0 + rsplen, snslen);
|
|
}
|
|
lp = (uint32_t *)cmnd->sense_buffer;
|
|
|
|
/* special handling for under run conditions */
|
|
if (!scsi_status && (resp_info & RESID_UNDER)) {
|
|
/* don't log under runs if fcp set... */
|
|
if (vport->cfg_log_verbose & LOG_FCP)
|
|
logit = LOG_FCP_ERROR;
|
|
/* unless operator says so */
|
|
if (vport->cfg_log_verbose & LOG_FCP_UNDER)
|
|
logit = LOG_FCP_UNDER;
|
|
}
|
|
|
|
lpfc_printf_vlog(vport, KERN_WARNING, logit,
|
|
"9024 FCP command x%x failed: x%x SNS x%x x%x "
|
|
"Data: x%x x%x x%x x%x x%x\n",
|
|
cmnd->cmnd[0], scsi_status,
|
|
be32_to_cpu(*lp), be32_to_cpu(*(lp + 3)), resp_info,
|
|
be32_to_cpu(fcprsp->rspResId),
|
|
be32_to_cpu(fcprsp->rspSnsLen),
|
|
be32_to_cpu(fcprsp->rspRspLen),
|
|
fcprsp->rspInfo3);
|
|
|
|
scsi_set_resid(cmnd, 0);
|
|
fcpDl = be32_to_cpu(fcpcmd->fcpDl);
|
|
if (resp_info & RESID_UNDER) {
|
|
scsi_set_resid(cmnd, be32_to_cpu(fcprsp->rspResId));
|
|
|
|
lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP_UNDER,
|
|
"9025 FCP Underrun, expected %d, "
|
|
"residual %d Data: x%x x%x x%x\n",
|
|
fcpDl,
|
|
scsi_get_resid(cmnd), fcpi_parm, cmnd->cmnd[0],
|
|
cmnd->underflow);
|
|
|
|
/*
|
|
* If there is an under run, check if under run reported by
|
|
* storage array is same as the under run reported by HBA.
|
|
* If this is not same, there is a dropped frame.
|
|
*/
|
|
if (fcpi_parm && (scsi_get_resid(cmnd) != fcpi_parm)) {
|
|
lpfc_printf_vlog(vport, KERN_WARNING,
|
|
LOG_FCP | LOG_FCP_ERROR,
|
|
"9026 FCP Read Check Error "
|
|
"and Underrun Data: x%x x%x x%x x%x\n",
|
|
fcpDl,
|
|
scsi_get_resid(cmnd), fcpi_parm,
|
|
cmnd->cmnd[0]);
|
|
scsi_set_resid(cmnd, scsi_bufflen(cmnd));
|
|
host_status = DID_ERROR;
|
|
}
|
|
/*
|
|
* The cmnd->underflow is the minimum number of bytes that must
|
|
* be transferred for this command. Provided a sense condition
|
|
* is not present, make sure the actual amount transferred is at
|
|
* least the underflow value or fail.
|
|
*/
|
|
if (!(resp_info & SNS_LEN_VALID) &&
|
|
(scsi_status == SAM_STAT_GOOD) &&
|
|
(scsi_bufflen(cmnd) - scsi_get_resid(cmnd)
|
|
< cmnd->underflow)) {
|
|
lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
|
|
"9027 FCP command x%x residual "
|
|
"underrun converted to error "
|
|
"Data: x%x x%x x%x\n",
|
|
cmnd->cmnd[0], scsi_bufflen(cmnd),
|
|
scsi_get_resid(cmnd), cmnd->underflow);
|
|
host_status = DID_ERROR;
|
|
}
|
|
} else if (resp_info & RESID_OVER) {
|
|
lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
|
|
"9028 FCP command x%x residual overrun error. "
|
|
"Data: x%x x%x\n", cmnd->cmnd[0],
|
|
scsi_bufflen(cmnd), scsi_get_resid(cmnd));
|
|
host_status = DID_ERROR;
|
|
|
|
/*
|
|
* Check SLI validation that all the transfer was actually done
|
|
* (fcpi_parm should be zero). Apply check only to reads.
|
|
*/
|
|
} else if (fcpi_parm) {
|
|
lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP | LOG_FCP_ERROR,
|
|
"9029 FCP %s Check Error Data: "
|
|
"x%x x%x x%x x%x x%x\n",
|
|
((cmnd->sc_data_direction == DMA_FROM_DEVICE) ?
|
|
"Read" : "Write"),
|
|
fcpDl, be32_to_cpu(fcprsp->rspResId),
|
|
fcpi_parm, cmnd->cmnd[0], scsi_status);
|
|
|
|
/* There is some issue with the LPe12000 that causes it
|
|
* to miscalculate the fcpi_parm and falsely trip this
|
|
* recovery logic. Detect this case and don't error when true.
|
|
*/
|
|
if (fcpi_parm > fcpDl)
|
|
goto out;
|
|
|
|
switch (scsi_status) {
|
|
case SAM_STAT_GOOD:
|
|
case SAM_STAT_CHECK_CONDITION:
|
|
/* Fabric dropped a data frame. Fail any successful
|
|
* command in which we detected dropped frames.
|
|
* A status of good or some check conditions could
|
|
* be considered a successful command.
|
|
*/
|
|
host_status = DID_ERROR;
|
|
break;
|
|
}
|
|
scsi_set_resid(cmnd, scsi_bufflen(cmnd));
|
|
}
|
|
|
|
out:
|
|
cmnd->result = host_status << 16 | scsi_status;
|
|
lpfc_send_scsi_error_event(vport->phba, vport, lpfc_cmd, fcpi_parm);
|
|
}
|
|
|
|
/**
|
|
* lpfc_fcp_io_cmd_wqe_cmpl - Complete a FCP IO
|
|
* @phba: The hba for which this call is being executed.
|
|
* @pwqeIn: The command WQE for the scsi cmnd.
|
|
* @pwqeOut: Pointer to driver response WQE object.
|
|
*
|
|
* This routine assigns scsi command result by looking into response WQE
|
|
* status field appropriately. This routine handles QUEUE FULL condition as
|
|
* well by ramping down device queue depth.
|
|
**/
|
|
static void
|
|
lpfc_fcp_io_cmd_wqe_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeIn,
|
|
struct lpfc_iocbq *pwqeOut)
|
|
{
|
|
struct lpfc_io_buf *lpfc_cmd = pwqeIn->io_buf;
|
|
struct lpfc_wcqe_complete *wcqe = &pwqeOut->wcqe_cmpl;
|
|
struct lpfc_vport *vport = pwqeIn->vport;
|
|
struct lpfc_rport_data *rdata;
|
|
struct lpfc_nodelist *ndlp;
|
|
struct scsi_cmnd *cmd;
|
|
unsigned long flags;
|
|
struct lpfc_fast_path_event *fast_path_evt;
|
|
struct Scsi_Host *shost;
|
|
u32 logit = LOG_FCP;
|
|
u32 idx;
|
|
u32 lat;
|
|
u8 wait_xb_clr = 0;
|
|
|
|
/* Sanity check on return of outstanding command */
|
|
if (!lpfc_cmd) {
|
|
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
|
|
"9032 Null lpfc_cmd pointer. No "
|
|
"release, skip completion\n");
|
|
return;
|
|
}
|
|
|
|
rdata = lpfc_cmd->rdata;
|
|
ndlp = rdata->pnode;
|
|
|
|
/* Sanity check on return of outstanding command */
|
|
cmd = lpfc_cmd->pCmd;
|
|
if (!cmd) {
|
|
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
|
|
"9042 I/O completion: Not an active IO\n");
|
|
lpfc_release_scsi_buf(phba, lpfc_cmd);
|
|
return;
|
|
}
|
|
/* Guard against abort handler being called at same time */
|
|
spin_lock(&lpfc_cmd->buf_lock);
|
|
idx = lpfc_cmd->cur_iocbq.hba_wqidx;
|
|
if (phba->sli4_hba.hdwq)
|
|
phba->sli4_hba.hdwq[idx].scsi_cstat.io_cmpls++;
|
|
|
|
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
|
|
if (unlikely(phba->hdwqstat_on & LPFC_CHECK_SCSI_IO))
|
|
this_cpu_inc(phba->sli4_hba.c_stat->cmpl_io);
|
|
#endif
|
|
shost = cmd->device->host;
|
|
|
|
lpfc_cmd->status = bf_get(lpfc_wcqe_c_status, wcqe);
|
|
lpfc_cmd->result = (wcqe->parameter & IOERR_PARAM_MASK);
|
|
|
|
lpfc_cmd->flags &= ~LPFC_SBUF_XBUSY;
|
|
if (bf_get(lpfc_wcqe_c_xb, wcqe)) {
|
|
lpfc_cmd->flags |= LPFC_SBUF_XBUSY;
|
|
if (phba->cfg_fcp_wait_abts_rsp)
|
|
wait_xb_clr = 1;
|
|
}
|
|
|
|
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
|
|
if (lpfc_cmd->prot_data_type) {
|
|
struct scsi_dif_tuple *src = NULL;
|
|
|
|
src = (struct scsi_dif_tuple *)lpfc_cmd->prot_data_segment;
|
|
/*
|
|
* Used to restore any changes to protection
|
|
* data for error injection.
|
|
*/
|
|
switch (lpfc_cmd->prot_data_type) {
|
|
case LPFC_INJERR_REFTAG:
|
|
src->ref_tag =
|
|
lpfc_cmd->prot_data;
|
|
break;
|
|
case LPFC_INJERR_APPTAG:
|
|
src->app_tag =
|
|
(uint16_t)lpfc_cmd->prot_data;
|
|
break;
|
|
case LPFC_INJERR_GUARD:
|
|
src->guard_tag =
|
|
(uint16_t)lpfc_cmd->prot_data;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
lpfc_cmd->prot_data = 0;
|
|
lpfc_cmd->prot_data_type = 0;
|
|
lpfc_cmd->prot_data_segment = NULL;
|
|
}
|
|
#endif
|
|
if (unlikely(lpfc_cmd->status)) {
|
|
if (lpfc_cmd->status == IOSTAT_FCP_RSP_ERROR &&
|
|
!lpfc_cmd->fcp_rsp->rspStatus3 &&
|
|
(lpfc_cmd->fcp_rsp->rspStatus2 & RESID_UNDER) &&
|
|
!(vport->cfg_log_verbose & LOG_FCP_UNDER))
|
|
logit = 0;
|
|
else
|
|
logit = LOG_FCP | LOG_FCP_UNDER;
|
|
lpfc_printf_vlog(vport, KERN_WARNING, logit,
|
|
"9034 FCP cmd x%x failed <%d/%lld> "
|
|
"status: x%x result: x%x "
|
|
"sid: x%x did: x%x oxid: x%x "
|
|
"Data: x%x x%x x%x\n",
|
|
cmd->cmnd[0],
|
|
cmd->device ? cmd->device->id : 0xffff,
|
|
cmd->device ? cmd->device->lun : 0xffff,
|
|
lpfc_cmd->status, lpfc_cmd->result,
|
|
vport->fc_myDID,
|
|
(ndlp) ? ndlp->nlp_DID : 0,
|
|
lpfc_cmd->cur_iocbq.sli4_xritag,
|
|
wcqe->parameter, wcqe->total_data_placed,
|
|
lpfc_cmd->cur_iocbq.iotag);
|
|
}
|
|
|
|
switch (lpfc_cmd->status) {
|
|
case CQE_STATUS_SUCCESS:
|
|
cmd->result = DID_OK << 16;
|
|
break;
|
|
case CQE_STATUS_FCP_RSP_FAILURE:
|
|
lpfc_handle_fcp_err(vport, lpfc_cmd,
|
|
pwqeIn->wqe.fcp_iread.total_xfer_len -
|
|
wcqe->total_data_placed);
|
|
break;
|
|
case CQE_STATUS_NPORT_BSY:
|
|
case CQE_STATUS_FABRIC_BSY:
|
|
cmd->result = DID_TRANSPORT_DISRUPTED << 16;
|
|
fast_path_evt = lpfc_alloc_fast_evt(phba);
|
|
if (!fast_path_evt)
|
|
break;
|
|
fast_path_evt->un.fabric_evt.event_type =
|
|
FC_REG_FABRIC_EVENT;
|
|
fast_path_evt->un.fabric_evt.subcategory =
|
|
(lpfc_cmd->status == IOSTAT_NPORT_BSY) ?
|
|
LPFC_EVENT_PORT_BUSY : LPFC_EVENT_FABRIC_BUSY;
|
|
if (ndlp) {
|
|
memcpy(&fast_path_evt->un.fabric_evt.wwpn,
|
|
&ndlp->nlp_portname,
|
|
sizeof(struct lpfc_name));
|
|
memcpy(&fast_path_evt->un.fabric_evt.wwnn,
|
|
&ndlp->nlp_nodename,
|
|
sizeof(struct lpfc_name));
|
|
}
|
|
fast_path_evt->vport = vport;
|
|
fast_path_evt->work_evt.evt =
|
|
LPFC_EVT_FASTPATH_MGMT_EVT;
|
|
spin_lock_irqsave(&phba->hbalock, flags);
|
|
list_add_tail(&fast_path_evt->work_evt.evt_listp,
|
|
&phba->work_list);
|
|
spin_unlock_irqrestore(&phba->hbalock, flags);
|
|
lpfc_worker_wake_up(phba);
|
|
lpfc_printf_vlog(vport, KERN_WARNING, logit,
|
|
"9035 Fabric/Node busy FCP cmd x%x failed"
|
|
" <%d/%lld> "
|
|
"status: x%x result: x%x "
|
|
"sid: x%x did: x%x oxid: x%x "
|
|
"Data: x%x x%x x%x\n",
|
|
cmd->cmnd[0],
|
|
cmd->device ? cmd->device->id : 0xffff,
|
|
cmd->device ? cmd->device->lun : 0xffff,
|
|
lpfc_cmd->status, lpfc_cmd->result,
|
|
vport->fc_myDID,
|
|
(ndlp) ? ndlp->nlp_DID : 0,
|
|
lpfc_cmd->cur_iocbq.sli4_xritag,
|
|
wcqe->parameter,
|
|
wcqe->total_data_placed,
|
|
lpfc_cmd->cur_iocbq.iocb.ulpIoTag);
|
|
break;
|
|
case CQE_STATUS_DI_ERROR:
|
|
if (bf_get(lpfc_wcqe_c_bg_edir, wcqe))
|
|
lpfc_cmd->result = IOERR_RX_DMA_FAILED;
|
|
else
|
|
lpfc_cmd->result = IOERR_TX_DMA_FAILED;
|
|
lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP | LOG_BG,
|
|
"9048 DI Error xri x%x status x%x DI ext "
|
|
"status x%x data placed x%x\n",
|
|
lpfc_cmd->cur_iocbq.sli4_xritag,
|
|
lpfc_cmd->status, wcqe->parameter,
|
|
wcqe->total_data_placed);
|
|
if (scsi_get_prot_op(cmd) != SCSI_PROT_NORMAL) {
|
|
/* BG enabled cmd. Parse BG error */
|
|
lpfc_parse_bg_err(phba, lpfc_cmd, pwqeOut);
|
|
break;
|
|
}
|
|
cmd->result = DID_ERROR << 16;
|
|
lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG,
|
|
"9040 DI Error on unprotected cmd\n");
|
|
break;
|
|
case CQE_STATUS_REMOTE_STOP:
|
|
if (ndlp) {
|
|
/* This I/O was aborted by the target, we don't
|
|
* know the rxid and because we did not send the
|
|
* ABTS we cannot generate and RRQ.
|
|
*/
|
|
lpfc_set_rrq_active(phba, ndlp,
|
|
lpfc_cmd->cur_iocbq.sli4_lxritag,
|
|
0, 0);
|
|
}
|
|
fallthrough;
|
|
case CQE_STATUS_LOCAL_REJECT:
|
|
if (lpfc_cmd->result & IOERR_DRVR_MASK)
|
|
lpfc_cmd->status = IOSTAT_DRIVER_REJECT;
|
|
if (lpfc_cmd->result == IOERR_ELXSEC_KEY_UNWRAP_ERROR ||
|
|
lpfc_cmd->result ==
|
|
IOERR_ELXSEC_KEY_UNWRAP_COMPARE_ERROR ||
|
|
lpfc_cmd->result == IOERR_ELXSEC_CRYPTO_ERROR ||
|
|
lpfc_cmd->result ==
|
|
IOERR_ELXSEC_CRYPTO_COMPARE_ERROR) {
|
|
cmd->result = DID_NO_CONNECT << 16;
|
|
break;
|
|
}
|
|
if (lpfc_cmd->result == IOERR_INVALID_RPI ||
|
|
lpfc_cmd->result == IOERR_LINK_DOWN ||
|
|
lpfc_cmd->result == IOERR_NO_RESOURCES ||
|
|
lpfc_cmd->result == IOERR_ABORT_REQUESTED ||
|
|
lpfc_cmd->result == IOERR_RPI_SUSPENDED ||
|
|
lpfc_cmd->result == IOERR_SLER_CMD_RCV_FAILURE) {
|
|
cmd->result = DID_TRANSPORT_DISRUPTED << 16;
|
|
break;
|
|
}
|
|
lpfc_printf_vlog(vport, KERN_WARNING, logit,
|
|
"9036 Local Reject FCP cmd x%x failed"
|
|
" <%d/%lld> "
|
|
"status: x%x result: x%x "
|
|
"sid: x%x did: x%x oxid: x%x "
|
|
"Data: x%x x%x x%x\n",
|
|
cmd->cmnd[0],
|
|
cmd->device ? cmd->device->id : 0xffff,
|
|
cmd->device ? cmd->device->lun : 0xffff,
|
|
lpfc_cmd->status, lpfc_cmd->result,
|
|
vport->fc_myDID,
|
|
(ndlp) ? ndlp->nlp_DID : 0,
|
|
lpfc_cmd->cur_iocbq.sli4_xritag,
|
|
wcqe->parameter,
|
|
wcqe->total_data_placed,
|
|
lpfc_cmd->cur_iocbq.iocb.ulpIoTag);
|
|
fallthrough;
|
|
default:
|
|
cmd->result = DID_ERROR << 16;
|
|
lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
|
|
"9037 FCP Completion Error: xri %x "
|
|
"status x%x result x%x [x%x] "
|
|
"placed x%x\n",
|
|
lpfc_cmd->cur_iocbq.sli4_xritag,
|
|
lpfc_cmd->status, lpfc_cmd->result,
|
|
wcqe->parameter,
|
|
wcqe->total_data_placed);
|
|
}
|
|
if (cmd->result || lpfc_cmd->fcp_rsp->rspSnsLen) {
|
|
u32 *lp = (u32 *)cmd->sense_buffer;
|
|
|
|
lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
|
|
"9039 Iodone <%d/%llu> cmd x%px, error "
|
|
"x%x SNS x%x x%x LBA x%llx Data: x%x x%x\n",
|
|
cmd->device->id, cmd->device->lun, cmd,
|
|
cmd->result, *lp, *(lp + 3),
|
|
(cmd->device->sector_size) ?
|
|
(u64)scsi_get_lba(cmd) : 0,
|
|
cmd->retries, scsi_get_resid(cmd));
|
|
}
|
|
|
|
if (vport->cfg_max_scsicmpl_time &&
|
|
time_after(jiffies, lpfc_cmd->start_time +
|
|
msecs_to_jiffies(vport->cfg_max_scsicmpl_time))) {
|
|
spin_lock_irqsave(shost->host_lock, flags);
|
|
if (ndlp) {
|
|
if (ndlp->cmd_qdepth >
|
|
atomic_read(&ndlp->cmd_pending) &&
|
|
(atomic_read(&ndlp->cmd_pending) >
|
|
LPFC_MIN_TGT_QDEPTH) &&
|
|
(cmd->cmnd[0] == READ_10 ||
|
|
cmd->cmnd[0] == WRITE_10))
|
|
ndlp->cmd_qdepth =
|
|
atomic_read(&ndlp->cmd_pending);
|
|
|
|
ndlp->last_change_time = jiffies;
|
|
}
|
|
spin_unlock_irqrestore(shost->host_lock, flags);
|
|
}
|
|
lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd);
|
|
|
|
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
|
|
if (lpfc_cmd->ts_cmd_start) {
|
|
lpfc_cmd->ts_isr_cmpl = lpfc_cmd->cur_iocbq.isr_timestamp;
|
|
lpfc_cmd->ts_data_io = ktime_get_ns();
|
|
phba->ktime_last_cmd = lpfc_cmd->ts_data_io;
|
|
lpfc_io_ktime(phba, lpfc_cmd);
|
|
}
|
|
#endif
|
|
if (likely(!wait_xb_clr))
|
|
lpfc_cmd->pCmd = NULL;
|
|
spin_unlock(&lpfc_cmd->buf_lock);
|
|
|
|
/* Check if IO qualified for CMF */
|
|
if (phba->cmf_active_mode != LPFC_CFG_OFF &&
|
|
cmd->sc_data_direction == DMA_FROM_DEVICE &&
|
|
(scsi_sg_count(cmd))) {
|
|
/* Used when calculating average latency */
|
|
lat = ktime_get_ns() - lpfc_cmd->rx_cmd_start;
|
|
lpfc_update_cmf_cmpl(phba, lat, scsi_bufflen(cmd), shost);
|
|
}
|
|
|
|
if (wait_xb_clr)
|
|
goto out;
|
|
|
|
/* The sdev is not guaranteed to be valid post scsi_done upcall. */
|
|
scsi_done(cmd);
|
|
|
|
/*
|
|
* If there is an abort thread waiting for command completion
|
|
* wake up the thread.
|
|
*/
|
|
spin_lock(&lpfc_cmd->buf_lock);
|
|
lpfc_cmd->cur_iocbq.cmd_flag &= ~LPFC_DRIVER_ABORTED;
|
|
if (lpfc_cmd->waitq)
|
|
wake_up(lpfc_cmd->waitq);
|
|
spin_unlock(&lpfc_cmd->buf_lock);
|
|
out:
|
|
lpfc_release_scsi_buf(phba, lpfc_cmd);
|
|
}
|
|
|
|
/**
|
|
* lpfc_scsi_cmd_iocb_cmpl - Scsi cmnd IOCB completion routine
|
|
* @phba: The Hba for which this call is being executed.
|
|
* @pIocbIn: The command IOCBQ for the scsi cmnd.
|
|
* @pIocbOut: The response IOCBQ for the scsi cmnd.
|
|
*
|
|
* This routine assigns scsi command result by looking into response IOCB
|
|
* status field appropriately. This routine handles QUEUE FULL condition as
|
|
* well by ramping down device queue depth.
|
|
**/
|
|
static void
|
|
lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn,
|
|
struct lpfc_iocbq *pIocbOut)
|
|
{
|
|
struct lpfc_io_buf *lpfc_cmd =
|
|
(struct lpfc_io_buf *) pIocbIn->io_buf;
|
|
struct lpfc_vport *vport = pIocbIn->vport;
|
|
struct lpfc_rport_data *rdata = lpfc_cmd->rdata;
|
|
struct lpfc_nodelist *pnode = rdata->pnode;
|
|
struct scsi_cmnd *cmd;
|
|
unsigned long flags;
|
|
struct lpfc_fast_path_event *fast_path_evt;
|
|
struct Scsi_Host *shost;
|
|
int idx;
|
|
uint32_t logit = LOG_FCP;
|
|
|
|
/* Guard against abort handler being called at same time */
|
|
spin_lock(&lpfc_cmd->buf_lock);
|
|
|
|
/* Sanity check on return of outstanding command */
|
|
cmd = lpfc_cmd->pCmd;
|
|
if (!cmd || !phba) {
|
|
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
|
|
"2621 IO completion: Not an active IO\n");
|
|
spin_unlock(&lpfc_cmd->buf_lock);
|
|
return;
|
|
}
|
|
|
|
idx = lpfc_cmd->cur_iocbq.hba_wqidx;
|
|
if (phba->sli4_hba.hdwq)
|
|
phba->sli4_hba.hdwq[idx].scsi_cstat.io_cmpls++;
|
|
|
|
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
|
|
if (unlikely(phba->hdwqstat_on & LPFC_CHECK_SCSI_IO))
|
|
this_cpu_inc(phba->sli4_hba.c_stat->cmpl_io);
|
|
#endif
|
|
shost = cmd->device->host;
|
|
|
|
lpfc_cmd->result = (pIocbOut->iocb.un.ulpWord[4] & IOERR_PARAM_MASK);
|
|
lpfc_cmd->status = pIocbOut->iocb.ulpStatus;
|
|
/* pick up SLI4 exchange busy status from HBA */
|
|
lpfc_cmd->flags &= ~LPFC_SBUF_XBUSY;
|
|
if (pIocbOut->cmd_flag & LPFC_EXCHANGE_BUSY)
|
|
lpfc_cmd->flags |= LPFC_SBUF_XBUSY;
|
|
|
|
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
|
|
if (lpfc_cmd->prot_data_type) {
|
|
struct scsi_dif_tuple *src = NULL;
|
|
|
|
src = (struct scsi_dif_tuple *)lpfc_cmd->prot_data_segment;
|
|
/*
|
|
* Used to restore any changes to protection
|
|
* data for error injection.
|
|
*/
|
|
switch (lpfc_cmd->prot_data_type) {
|
|
case LPFC_INJERR_REFTAG:
|
|
src->ref_tag =
|
|
lpfc_cmd->prot_data;
|
|
break;
|
|
case LPFC_INJERR_APPTAG:
|
|
src->app_tag =
|
|
(uint16_t)lpfc_cmd->prot_data;
|
|
break;
|
|
case LPFC_INJERR_GUARD:
|
|
src->guard_tag =
|
|
(uint16_t)lpfc_cmd->prot_data;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
lpfc_cmd->prot_data = 0;
|
|
lpfc_cmd->prot_data_type = 0;
|
|
lpfc_cmd->prot_data_segment = NULL;
|
|
}
|
|
#endif
|
|
|
|
if (unlikely(lpfc_cmd->status)) {
|
|
if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT &&
|
|
(lpfc_cmd->result & IOERR_DRVR_MASK))
|
|
lpfc_cmd->status = IOSTAT_DRIVER_REJECT;
|
|
else if (lpfc_cmd->status >= IOSTAT_CNT)
|
|
lpfc_cmd->status = IOSTAT_DEFAULT;
|
|
if (lpfc_cmd->status == IOSTAT_FCP_RSP_ERROR &&
|
|
!lpfc_cmd->fcp_rsp->rspStatus3 &&
|
|
(lpfc_cmd->fcp_rsp->rspStatus2 & RESID_UNDER) &&
|
|
!(vport->cfg_log_verbose & LOG_FCP_UNDER))
|
|
logit = 0;
|
|
else
|
|
logit = LOG_FCP | LOG_FCP_UNDER;
|
|
lpfc_printf_vlog(vport, KERN_WARNING, logit,
|
|
"9030 FCP cmd x%x failed <%d/%lld> "
|
|
"status: x%x result: x%x "
|
|
"sid: x%x did: x%x oxid: x%x "
|
|
"Data: x%x x%x\n",
|
|
cmd->cmnd[0],
|
|
cmd->device ? cmd->device->id : 0xffff,
|
|
cmd->device ? cmd->device->lun : 0xffff,
|
|
lpfc_cmd->status, lpfc_cmd->result,
|
|
vport->fc_myDID,
|
|
(pnode) ? pnode->nlp_DID : 0,
|
|
phba->sli_rev == LPFC_SLI_REV4 ?
|
|
lpfc_cmd->cur_iocbq.sli4_xritag : 0xffff,
|
|
pIocbOut->iocb.ulpContext,
|
|
lpfc_cmd->cur_iocbq.iocb.ulpIoTag);
|
|
|
|
switch (lpfc_cmd->status) {
|
|
case IOSTAT_FCP_RSP_ERROR:
|
|
/* Call FCP RSP handler to determine result */
|
|
lpfc_handle_fcp_err(vport, lpfc_cmd,
|
|
pIocbOut->iocb.un.fcpi.fcpi_parm);
|
|
break;
|
|
case IOSTAT_NPORT_BSY:
|
|
case IOSTAT_FABRIC_BSY:
|
|
cmd->result = DID_TRANSPORT_DISRUPTED << 16;
|
|
fast_path_evt = lpfc_alloc_fast_evt(phba);
|
|
if (!fast_path_evt)
|
|
break;
|
|
fast_path_evt->un.fabric_evt.event_type =
|
|
FC_REG_FABRIC_EVENT;
|
|
fast_path_evt->un.fabric_evt.subcategory =
|
|
(lpfc_cmd->status == IOSTAT_NPORT_BSY) ?
|
|
LPFC_EVENT_PORT_BUSY : LPFC_EVENT_FABRIC_BUSY;
|
|
if (pnode) {
|
|
memcpy(&fast_path_evt->un.fabric_evt.wwpn,
|
|
&pnode->nlp_portname,
|
|
sizeof(struct lpfc_name));
|
|
memcpy(&fast_path_evt->un.fabric_evt.wwnn,
|
|
&pnode->nlp_nodename,
|
|
sizeof(struct lpfc_name));
|
|
}
|
|
fast_path_evt->vport = vport;
|
|
fast_path_evt->work_evt.evt =
|
|
LPFC_EVT_FASTPATH_MGMT_EVT;
|
|
spin_lock_irqsave(&phba->hbalock, flags);
|
|
list_add_tail(&fast_path_evt->work_evt.evt_listp,
|
|
&phba->work_list);
|
|
spin_unlock_irqrestore(&phba->hbalock, flags);
|
|
lpfc_worker_wake_up(phba);
|
|
break;
|
|
case IOSTAT_LOCAL_REJECT:
|
|
case IOSTAT_REMOTE_STOP:
|
|
if (lpfc_cmd->result == IOERR_ELXSEC_KEY_UNWRAP_ERROR ||
|
|
lpfc_cmd->result ==
|
|
IOERR_ELXSEC_KEY_UNWRAP_COMPARE_ERROR ||
|
|
lpfc_cmd->result == IOERR_ELXSEC_CRYPTO_ERROR ||
|
|
lpfc_cmd->result ==
|
|
IOERR_ELXSEC_CRYPTO_COMPARE_ERROR) {
|
|
cmd->result = DID_NO_CONNECT << 16;
|
|
break;
|
|
}
|
|
if (lpfc_cmd->result == IOERR_INVALID_RPI ||
|
|
lpfc_cmd->result == IOERR_NO_RESOURCES ||
|
|
lpfc_cmd->result == IOERR_ABORT_REQUESTED ||
|
|
lpfc_cmd->result == IOERR_SLER_CMD_RCV_FAILURE) {
|
|
cmd->result = DID_TRANSPORT_DISRUPTED << 16;
|
|
break;
|
|
}
|
|
if ((lpfc_cmd->result == IOERR_RX_DMA_FAILED ||
|
|
lpfc_cmd->result == IOERR_TX_DMA_FAILED) &&
|
|
pIocbOut->iocb.unsli3.sli3_bg.bgstat) {
|
|
if (scsi_get_prot_op(cmd) != SCSI_PROT_NORMAL) {
|
|
/*
|
|
* This is a response for a BG enabled
|
|
* cmd. Parse BG error
|
|
*/
|
|
lpfc_parse_bg_err(phba, lpfc_cmd,
|
|
pIocbOut);
|
|
break;
|
|
} else {
|
|
lpfc_printf_vlog(vport, KERN_WARNING,
|
|
LOG_BG,
|
|
"9031 non-zero BGSTAT "
|
|
"on unprotected cmd\n");
|
|
}
|
|
}
|
|
if ((lpfc_cmd->status == IOSTAT_REMOTE_STOP)
|
|
&& (phba->sli_rev == LPFC_SLI_REV4)
|
|
&& pnode) {
|
|
/* This IO was aborted by the target, we don't
|
|
* know the rxid and because we did not send the
|
|
* ABTS we cannot generate and RRQ.
|
|
*/
|
|
lpfc_set_rrq_active(phba, pnode,
|
|
lpfc_cmd->cur_iocbq.sli4_lxritag,
|
|
0, 0);
|
|
}
|
|
fallthrough;
|
|
default:
|
|
cmd->result = DID_ERROR << 16;
|
|
break;
|
|
}
|
|
|
|
if (!pnode || (pnode->nlp_state != NLP_STE_MAPPED_NODE))
|
|
cmd->result = DID_TRANSPORT_DISRUPTED << 16 |
|
|
SAM_STAT_BUSY;
|
|
} else
|
|
cmd->result = DID_OK << 16;
|
|
|
|
if (cmd->result || lpfc_cmd->fcp_rsp->rspSnsLen) {
|
|
uint32_t *lp = (uint32_t *)cmd->sense_buffer;
|
|
|
|
lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
|
|
"0710 Iodone <%d/%llu> cmd x%px, error "
|
|
"x%x SNS x%x x%x Data: x%x x%x\n",
|
|
cmd->device->id, cmd->device->lun, cmd,
|
|
cmd->result, *lp, *(lp + 3), cmd->retries,
|
|
scsi_get_resid(cmd));
|
|
}
|
|
|
|
if (vport->cfg_max_scsicmpl_time &&
|
|
time_after(jiffies, lpfc_cmd->start_time +
|
|
msecs_to_jiffies(vport->cfg_max_scsicmpl_time))) {
|
|
spin_lock_irqsave(shost->host_lock, flags);
|
|
if (pnode) {
|
|
if (pnode->cmd_qdepth >
|
|
atomic_read(&pnode->cmd_pending) &&
|
|
(atomic_read(&pnode->cmd_pending) >
|
|
LPFC_MIN_TGT_QDEPTH) &&
|
|
((cmd->cmnd[0] == READ_10) ||
|
|
(cmd->cmnd[0] == WRITE_10)))
|
|
pnode->cmd_qdepth =
|
|
atomic_read(&pnode->cmd_pending);
|
|
|
|
pnode->last_change_time = jiffies;
|
|
}
|
|
spin_unlock_irqrestore(shost->host_lock, flags);
|
|
}
|
|
lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd);
|
|
|
|
lpfc_cmd->pCmd = NULL;
|
|
spin_unlock(&lpfc_cmd->buf_lock);
|
|
|
|
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
|
|
if (lpfc_cmd->ts_cmd_start) {
|
|
lpfc_cmd->ts_isr_cmpl = pIocbIn->isr_timestamp;
|
|
lpfc_cmd->ts_data_io = ktime_get_ns();
|
|
phba->ktime_last_cmd = lpfc_cmd->ts_data_io;
|
|
lpfc_io_ktime(phba, lpfc_cmd);
|
|
}
|
|
#endif
|
|
|
|
/* The sdev is not guaranteed to be valid post scsi_done upcall. */
|
|
scsi_done(cmd);
|
|
|
|
/*
|
|
* If there is an abort thread waiting for command completion
|
|
* wake up the thread.
|
|
*/
|
|
spin_lock(&lpfc_cmd->buf_lock);
|
|
lpfc_cmd->cur_iocbq.cmd_flag &= ~LPFC_DRIVER_ABORTED;
|
|
if (lpfc_cmd->waitq)
|
|
wake_up(lpfc_cmd->waitq);
|
|
spin_unlock(&lpfc_cmd->buf_lock);
|
|
|
|
lpfc_release_scsi_buf(phba, lpfc_cmd);
|
|
}
|
|
|
|
/**
|
|
* lpfc_scsi_prep_cmnd_buf_s3 - SLI-3 IOCB init for the IO
|
|
* @vport: Pointer to vport object.
|
|
* @lpfc_cmd: The scsi buffer which is going to be prep'ed.
|
|
* @tmo: timeout value for the IO
|
|
*
|
|
* Based on the data-direction of the command, initialize IOCB
|
|
* in the I/O buffer. Fill in the IOCB fields which are independent
|
|
* of the scsi buffer
|
|
*
|
|
* RETURNS 0 - SUCCESS,
|
|
**/
|
|
static int lpfc_scsi_prep_cmnd_buf_s3(struct lpfc_vport *vport,
|
|
struct lpfc_io_buf *lpfc_cmd,
|
|
uint8_t tmo)
|
|
{
|
|
IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
|
|
struct lpfc_iocbq *piocbq = &lpfc_cmd->cur_iocbq;
|
|
struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
|
|
struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
|
|
struct lpfc_nodelist *pnode = lpfc_cmd->ndlp;
|
|
int datadir = scsi_cmnd->sc_data_direction;
|
|
u32 fcpdl;
|
|
|
|
piocbq->iocb.un.fcpi.fcpi_XRdy = 0;
|
|
|
|
/*
|
|
* There are three possibilities here - use scatter-gather segment, use
|
|
* the single mapping, or neither. Start the lpfc command prep by
|
|
* bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first
|
|
* data bde entry.
|
|
*/
|
|
if (scsi_sg_count(scsi_cmnd)) {
|
|
if (datadir == DMA_TO_DEVICE) {
|
|
iocb_cmd->ulpCommand = CMD_FCP_IWRITE64_CR;
|
|
iocb_cmd->ulpPU = PARM_READ_CHECK;
|
|
if (vport->cfg_first_burst_size &&
|
|
(pnode->nlp_flag & NLP_FIRSTBURST)) {
|
|
u32 xrdy_len;
|
|
|
|
fcpdl = scsi_bufflen(scsi_cmnd);
|
|
xrdy_len = min(fcpdl,
|
|
vport->cfg_first_burst_size);
|
|
piocbq->iocb.un.fcpi.fcpi_XRdy = xrdy_len;
|
|
}
|
|
fcp_cmnd->fcpCntl3 = WRITE_DATA;
|
|
} else {
|
|
iocb_cmd->ulpCommand = CMD_FCP_IREAD64_CR;
|
|
iocb_cmd->ulpPU = PARM_READ_CHECK;
|
|
fcp_cmnd->fcpCntl3 = READ_DATA;
|
|
}
|
|
} else {
|
|
iocb_cmd->ulpCommand = CMD_FCP_ICMND64_CR;
|
|
iocb_cmd->un.fcpi.fcpi_parm = 0;
|
|
iocb_cmd->ulpPU = 0;
|
|
fcp_cmnd->fcpCntl3 = 0;
|
|
}
|
|
|
|
/*
|
|
* Finish initializing those IOCB fields that are independent
|
|
* of the scsi_cmnd request_buffer
|
|
*/
|
|
piocbq->iocb.ulpContext = pnode->nlp_rpi;
|
|
if (pnode->nlp_fcp_info & NLP_FCP_2_DEVICE)
|
|
piocbq->iocb.ulpFCP2Rcvy = 1;
|
|
else
|
|
piocbq->iocb.ulpFCP2Rcvy = 0;
|
|
|
|
piocbq->iocb.ulpClass = (pnode->nlp_fcp_info & 0x0f);
|
|
piocbq->io_buf = lpfc_cmd;
|
|
if (!piocbq->cmd_cmpl)
|
|
piocbq->cmd_cmpl = lpfc_scsi_cmd_iocb_cmpl;
|
|
piocbq->iocb.ulpTimeout = tmo;
|
|
piocbq->vport = vport;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* lpfc_scsi_prep_cmnd_buf_s4 - SLI-4 WQE init for the IO
|
|
* @vport: Pointer to vport object.
|
|
* @lpfc_cmd: The scsi buffer which is going to be prep'ed.
|
|
* @tmo: timeout value for the IO
|
|
*
|
|
* Based on the data-direction of the command copy WQE template
|
|
* to I/O buffer WQE. Fill in the WQE fields which are independent
|
|
* of the scsi buffer
|
|
*
|
|
* RETURNS 0 - SUCCESS,
|
|
**/
|
|
static int lpfc_scsi_prep_cmnd_buf_s4(struct lpfc_vport *vport,
|
|
struct lpfc_io_buf *lpfc_cmd,
|
|
uint8_t tmo)
|
|
{
|
|
struct lpfc_hba *phba = vport->phba;
|
|
struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
|
|
struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
|
|
struct lpfc_sli4_hdw_queue *hdwq = NULL;
|
|
struct lpfc_iocbq *pwqeq = &lpfc_cmd->cur_iocbq;
|
|
struct lpfc_nodelist *pnode = lpfc_cmd->ndlp;
|
|
union lpfc_wqe128 *wqe = &pwqeq->wqe;
|
|
u16 idx = lpfc_cmd->hdwq_no;
|
|
int datadir = scsi_cmnd->sc_data_direction;
|
|
|
|
hdwq = &phba->sli4_hba.hdwq[idx];
|
|
|
|
/* Initialize 64 bytes only */
|
|
memset(wqe, 0, sizeof(union lpfc_wqe128));
|
|
|
|
/*
|
|
* There are three possibilities here - use scatter-gather segment, use
|
|
* the single mapping, or neither.
|
|
*/
|
|
if (scsi_sg_count(scsi_cmnd)) {
|
|
if (datadir == DMA_TO_DEVICE) {
|
|
/* From the iwrite template, initialize words 7 - 11 */
|
|
memcpy(&wqe->words[7],
|
|
&lpfc_iwrite_cmd_template.words[7],
|
|
sizeof(uint32_t) * 5);
|
|
|
|
fcp_cmnd->fcpCntl3 = WRITE_DATA;
|
|
if (hdwq)
|
|
hdwq->scsi_cstat.output_requests++;
|
|
} else {
|
|
/* From the iread template, initialize words 7 - 11 */
|
|
memcpy(&wqe->words[7],
|
|
&lpfc_iread_cmd_template.words[7],
|
|
sizeof(uint32_t) * 5);
|
|
|
|
/* Word 7 */
|
|
bf_set(wqe_tmo, &wqe->fcp_iread.wqe_com, tmo);
|
|
|
|
fcp_cmnd->fcpCntl3 = READ_DATA;
|
|
if (hdwq)
|
|
hdwq->scsi_cstat.input_requests++;
|
|
|
|
/* For a CMF Managed port, iod must be zero'ed */
|
|
if (phba->cmf_active_mode == LPFC_CFG_MANAGED)
|
|
bf_set(wqe_iod, &wqe->fcp_iread.wqe_com,
|
|
LPFC_WQE_IOD_NONE);
|
|
}
|
|
} else {
|
|
/* From the icmnd template, initialize words 4 - 11 */
|
|
memcpy(&wqe->words[4], &lpfc_icmnd_cmd_template.words[4],
|
|
sizeof(uint32_t) * 8);
|
|
|
|
/* Word 7 */
|
|
bf_set(wqe_tmo, &wqe->fcp_icmd.wqe_com, tmo);
|
|
|
|
fcp_cmnd->fcpCntl3 = 0;
|
|
if (hdwq)
|
|
hdwq->scsi_cstat.control_requests++;
|
|
}
|
|
|
|
/*
|
|
* Finish initializing those WQE fields that are independent
|
|
* of the request_buffer
|
|
*/
|
|
|
|
/* Word 3 */
|
|
bf_set(payload_offset_len, &wqe->fcp_icmd,
|
|
sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp));
|
|
|
|
/* Word 6 */
|
|
bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
|
|
phba->sli4_hba.rpi_ids[pnode->nlp_rpi]);
|
|
bf_set(wqe_xri_tag, &wqe->generic.wqe_com, pwqeq->sli4_xritag);
|
|
|
|
/* Word 7*/
|
|
if (pnode->nlp_fcp_info & NLP_FCP_2_DEVICE)
|
|
bf_set(wqe_erp, &wqe->generic.wqe_com, 1);
|
|
|
|
bf_set(wqe_class, &wqe->generic.wqe_com,
|
|
(pnode->nlp_fcp_info & 0x0f));
|
|
|
|
/* Word 8 */
|
|
wqe->generic.wqe_com.abort_tag = pwqeq->iotag;
|
|
|
|
/* Word 9 */
|
|
bf_set(wqe_reqtag, &wqe->generic.wqe_com, pwqeq->iotag);
|
|
|
|
pwqeq->vport = vport;
|
|
pwqeq->io_buf = lpfc_cmd;
|
|
pwqeq->hba_wqidx = lpfc_cmd->hdwq_no;
|
|
pwqeq->cmd_cmpl = lpfc_fcp_io_cmd_wqe_cmpl;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* lpfc_scsi_prep_cmnd - Wrapper func for convert scsi cmnd to FCP info unit
|
|
* @vport: The virtual port for which this call is being executed.
|
|
* @lpfc_cmd: The scsi command which needs to send.
|
|
* @pnode: Pointer to lpfc_nodelist.
|
|
*
|
|
* This routine initializes fcp_cmnd and iocb data structure from scsi command
|
|
* to transfer for device with SLI3 interface spec.
|
|
**/
|
|
static int
|
|
lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_io_buf *lpfc_cmd,
|
|
struct lpfc_nodelist *pnode)
|
|
{
|
|
struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
|
|
struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
|
|
u8 *ptr;
|
|
|
|
if (!pnode)
|
|
return 0;
|
|
|
|
lpfc_cmd->fcp_rsp->rspSnsLen = 0;
|
|
/* clear task management bits */
|
|
lpfc_cmd->fcp_cmnd->fcpCntl2 = 0;
|
|
|
|
int_to_scsilun(lpfc_cmd->pCmd->device->lun,
|
|
&lpfc_cmd->fcp_cmnd->fcp_lun);
|
|
|
|
ptr = &fcp_cmnd->fcpCdb[0];
|
|
memcpy(ptr, scsi_cmnd->cmnd, scsi_cmnd->cmd_len);
|
|
if (scsi_cmnd->cmd_len < LPFC_FCP_CDB_LEN) {
|
|
ptr += scsi_cmnd->cmd_len;
|
|
memset(ptr, 0, (LPFC_FCP_CDB_LEN - scsi_cmnd->cmd_len));
|
|
}
|
|
|
|
fcp_cmnd->fcpCntl1 = SIMPLE_Q;
|
|
|
|
lpfc_scsi_prep_cmnd_buf(vport, lpfc_cmd, lpfc_cmd->timeout);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* lpfc_scsi_prep_task_mgmt_cmd_s3 - Convert SLI3 scsi TM cmd to FCP info unit
|
|
* @vport: The virtual port for which this call is being executed.
|
|
* @lpfc_cmd: Pointer to lpfc_io_buf data structure.
|
|
* @lun: Logical unit number.
|
|
* @task_mgmt_cmd: SCSI task management command.
|
|
*
|
|
* This routine creates FCP information unit corresponding to @task_mgmt_cmd
|
|
* for device with SLI-3 interface spec.
|
|
*
|
|
* Return codes:
|
|
* 0 - Error
|
|
* 1 - Success
|
|
**/
|
|
static int
|
|
lpfc_scsi_prep_task_mgmt_cmd_s3(struct lpfc_vport *vport,
|
|
struct lpfc_io_buf *lpfc_cmd,
|
|
u64 lun, u8 task_mgmt_cmd)
|
|
{
|
|
struct lpfc_iocbq *piocbq;
|
|
IOCB_t *piocb;
|
|
struct fcp_cmnd *fcp_cmnd;
|
|
struct lpfc_rport_data *rdata = lpfc_cmd->rdata;
|
|
struct lpfc_nodelist *ndlp = rdata->pnode;
|
|
|
|
if (!ndlp || ndlp->nlp_state != NLP_STE_MAPPED_NODE)
|
|
return 0;
|
|
|
|
piocbq = &(lpfc_cmd->cur_iocbq);
|
|
piocbq->vport = vport;
|
|
|
|
piocb = &piocbq->iocb;
|
|
|
|
fcp_cmnd = lpfc_cmd->fcp_cmnd;
|
|
/* Clear out any old data in the FCP command area */
|
|
memset(fcp_cmnd, 0, sizeof(struct fcp_cmnd));
|
|
int_to_scsilun(lun, &fcp_cmnd->fcp_lun);
|
|
fcp_cmnd->fcpCntl2 = task_mgmt_cmd;
|
|
if (!(vport->phba->sli3_options & LPFC_SLI3_BG_ENABLED))
|
|
lpfc_fcpcmd_to_iocb(piocb->unsli3.fcp_ext.icd, fcp_cmnd);
|
|
piocb->ulpCommand = CMD_FCP_ICMND64_CR;
|
|
piocb->ulpContext = ndlp->nlp_rpi;
|
|
piocb->ulpFCP2Rcvy = (ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) ? 1 : 0;
|
|
piocb->ulpClass = (ndlp->nlp_fcp_info & 0x0f);
|
|
piocb->ulpPU = 0;
|
|
piocb->un.fcpi.fcpi_parm = 0;
|
|
|
|
/* ulpTimeout is only one byte */
|
|
if (lpfc_cmd->timeout > 0xff) {
|
|
/*
|
|
* Do not timeout the command at the firmware level.
|
|
* The driver will provide the timeout mechanism.
|
|
*/
|
|
piocb->ulpTimeout = 0;
|
|
} else
|
|
piocb->ulpTimeout = lpfc_cmd->timeout;
|
|
|
|
return 1;
|
|
}
|
|
|
|
/**
|
|
* lpfc_scsi_prep_task_mgmt_cmd_s4 - Convert SLI4 scsi TM cmd to FCP info unit
|
|
* @vport: The virtual port for which this call is being executed.
|
|
* @lpfc_cmd: Pointer to lpfc_io_buf data structure.
|
|
* @lun: Logical unit number.
|
|
* @task_mgmt_cmd: SCSI task management command.
|
|
*
|
|
* This routine creates FCP information unit corresponding to @task_mgmt_cmd
|
|
* for device with SLI-4 interface spec.
|
|
*
|
|
* Return codes:
|
|
* 0 - Error
|
|
* 1 - Success
|
|
**/
|
|
static int
|
|
lpfc_scsi_prep_task_mgmt_cmd_s4(struct lpfc_vport *vport,
|
|
struct lpfc_io_buf *lpfc_cmd,
|
|
u64 lun, u8 task_mgmt_cmd)
|
|
{
|
|
struct lpfc_iocbq *pwqeq = &lpfc_cmd->cur_iocbq;
|
|
union lpfc_wqe128 *wqe = &pwqeq->wqe;
|
|
struct fcp_cmnd *fcp_cmnd;
|
|
struct lpfc_rport_data *rdata = lpfc_cmd->rdata;
|
|
struct lpfc_nodelist *ndlp = rdata->pnode;
|
|
|
|
if (!ndlp || ndlp->nlp_state != NLP_STE_MAPPED_NODE)
|
|
return 0;
|
|
|
|
pwqeq->vport = vport;
|
|
/* Initialize 64 bytes only */
|
|
memset(wqe, 0, sizeof(union lpfc_wqe128));
|
|
|
|
/* From the icmnd template, initialize words 4 - 11 */
|
|
memcpy(&wqe->words[4], &lpfc_icmnd_cmd_template.words[4],
|
|
sizeof(uint32_t) * 8);
|
|
|
|
fcp_cmnd = lpfc_cmd->fcp_cmnd;
|
|
/* Clear out any old data in the FCP command area */
|
|
memset(fcp_cmnd, 0, sizeof(struct fcp_cmnd));
|
|
int_to_scsilun(lun, &fcp_cmnd->fcp_lun);
|
|
fcp_cmnd->fcpCntl3 = 0;
|
|
fcp_cmnd->fcpCntl2 = task_mgmt_cmd;
|
|
|
|
bf_set(payload_offset_len, &wqe->fcp_icmd,
|
|
sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp));
|
|
bf_set(cmd_buff_len, &wqe->fcp_icmd, 0);
|
|
bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, /* ulpContext */
|
|
vport->phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]);
|
|
bf_set(wqe_erp, &wqe->fcp_icmd.wqe_com,
|
|
((ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) ? 1 : 0));
|
|
bf_set(wqe_class, &wqe->fcp_icmd.wqe_com,
|
|
(ndlp->nlp_fcp_info & 0x0f));
|
|
|
|
/* ulpTimeout is only one byte */
|
|
if (lpfc_cmd->timeout > 0xff) {
|
|
/*
|
|
* Do not timeout the command at the firmware level.
|
|
* The driver will provide the timeout mechanism.
|
|
*/
|
|
bf_set(wqe_tmo, &wqe->fcp_icmd.wqe_com, 0);
|
|
} else {
|
|
bf_set(wqe_tmo, &wqe->fcp_icmd.wqe_com, lpfc_cmd->timeout);
|
|
}
|
|
|
|
lpfc_prep_embed_io(vport->phba, lpfc_cmd);
|
|
bf_set(wqe_xri_tag, &wqe->generic.wqe_com, pwqeq->sli4_xritag);
|
|
wqe->generic.wqe_com.abort_tag = pwqeq->iotag;
|
|
bf_set(wqe_reqtag, &wqe->generic.wqe_com, pwqeq->iotag);
|
|
|
|
lpfc_sli4_set_rsp_sgl_last(vport->phba, lpfc_cmd);
|
|
|
|
return 1;
|
|
}
|
|
|
|
/**
|
|
* lpfc_scsi_api_table_setup - Set up scsi api function jump table
|
|
* @phba: The hba struct for which this call is being executed.
|
|
* @dev_grp: The HBA PCI-Device group number.
|
|
*
|
|
* This routine sets up the SCSI interface API function jump table in @phba
|
|
* struct.
|
|
* Returns: 0 - success, -ENODEV - failure.
|
|
**/
|
|
int
|
|
lpfc_scsi_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
|
|
{
|
|
|
|
phba->lpfc_scsi_unprep_dma_buf = lpfc_scsi_unprep_dma_buf;
|
|
|
|
switch (dev_grp) {
|
|
case LPFC_PCI_DEV_LP:
|
|
phba->lpfc_scsi_prep_dma_buf = lpfc_scsi_prep_dma_buf_s3;
|
|
phba->lpfc_bg_scsi_prep_dma_buf = lpfc_bg_scsi_prep_dma_buf_s3;
|
|
phba->lpfc_release_scsi_buf = lpfc_release_scsi_buf_s3;
|
|
phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf_s3;
|
|
phba->lpfc_scsi_prep_cmnd_buf = lpfc_scsi_prep_cmnd_buf_s3;
|
|
phba->lpfc_scsi_prep_task_mgmt_cmd =
|
|
lpfc_scsi_prep_task_mgmt_cmd_s3;
|
|
break;
|
|
case LPFC_PCI_DEV_OC:
|
|
phba->lpfc_scsi_prep_dma_buf = lpfc_scsi_prep_dma_buf_s4;
|
|
phba->lpfc_bg_scsi_prep_dma_buf = lpfc_bg_scsi_prep_dma_buf_s4;
|
|
phba->lpfc_release_scsi_buf = lpfc_release_scsi_buf_s4;
|
|
phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf_s4;
|
|
phba->lpfc_scsi_prep_cmnd_buf = lpfc_scsi_prep_cmnd_buf_s4;
|
|
phba->lpfc_scsi_prep_task_mgmt_cmd =
|
|
lpfc_scsi_prep_task_mgmt_cmd_s4;
|
|
break;
|
|
default:
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
|
|
"1418 Invalid HBA PCI-device group: 0x%x\n",
|
|
dev_grp);
|
|
return -ENODEV;
|
|
}
|
|
phba->lpfc_rampdown_queue_depth = lpfc_rampdown_queue_depth;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* lpfc_tskmgmt_def_cmpl - IOCB completion routine for task management command
|
|
* @phba: The Hba for which this call is being executed.
|
|
* @cmdiocbq: Pointer to lpfc_iocbq data structure.
|
|
* @rspiocbq: Pointer to lpfc_iocbq data structure.
|
|
*
|
|
* This routine is IOCB completion routine for device reset and target reset
|
|
* routine. This routine release scsi buffer associated with lpfc_cmd.
|
|
**/
|
|
static void
|
|
lpfc_tskmgmt_def_cmpl(struct lpfc_hba *phba,
|
|
struct lpfc_iocbq *cmdiocbq,
|
|
struct lpfc_iocbq *rspiocbq)
|
|
{
|
|
struct lpfc_io_buf *lpfc_cmd = cmdiocbq->io_buf;
|
|
if (lpfc_cmd)
|
|
lpfc_release_scsi_buf(phba, lpfc_cmd);
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* lpfc_check_pci_resettable - Walks list of devices on pci_dev's bus to check
|
|
* if issuing a pci_bus_reset is possibly unsafe
|
|
* @phba: lpfc_hba pointer.
|
|
*
|
|
* Description:
|
|
* Walks the bus_list to ensure only PCI devices with Emulex
|
|
* vendor id, device ids that support hot reset, and only one occurrence
|
|
* of function 0.
|
|
*
|
|
* Returns:
|
|
* -EBADSLT, detected invalid device
|
|
* 0, successful
|
|
*/
|
|
int
|
|
lpfc_check_pci_resettable(struct lpfc_hba *phba)
|
|
{
|
|
const struct pci_dev *pdev = phba->pcidev;
|
|
struct pci_dev *ptr = NULL;
|
|
u8 counter = 0;
|
|
|
|
/* Walk the list of devices on the pci_dev's bus */
|
|
list_for_each_entry(ptr, &pdev->bus->devices, bus_list) {
|
|
/* Check for Emulex Vendor ID */
|
|
if (ptr->vendor != PCI_VENDOR_ID_EMULEX) {
|
|
lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
|
|
"8346 Non-Emulex vendor found: "
|
|
"0x%04x\n", ptr->vendor);
|
|
return -EBADSLT;
|
|
}
|
|
|
|
/* Check for valid Emulex Device ID */
|
|
if (phba->sli_rev != LPFC_SLI_REV4 ||
|
|
phba->hba_flag & HBA_FCOE_MODE) {
|
|
lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
|
|
"8347 Incapable PCI reset device: "
|
|
"0x%04x\n", ptr->device);
|
|
return -EBADSLT;
|
|
}
|
|
|
|
/* Check for only one function 0 ID to ensure only one HBA on
|
|
* secondary bus
|
|
*/
|
|
if (ptr->devfn == 0) {
|
|
if (++counter > 1) {
|
|
lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
|
|
"8348 More than one device on "
|
|
"secondary bus found\n");
|
|
return -EBADSLT;
|
|
}
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* lpfc_info - Info entry point of scsi_host_template data structure
|
|
* @host: The scsi host for which this call is being executed.
|
|
*
|
|
* This routine provides module information about hba.
|
|
*
|
|
* Reutrn code:
|
|
* Pointer to char - Success.
|
|
**/
|
|
const char *
|
|
lpfc_info(struct Scsi_Host *host)
|
|
{
|
|
struct lpfc_vport *vport = (struct lpfc_vport *) host->hostdata;
|
|
struct lpfc_hba *phba = vport->phba;
|
|
int link_speed = 0;
|
|
static char lpfcinfobuf[384];
|
|
char tmp[384] = {0};
|
|
|
|
memset(lpfcinfobuf, 0, sizeof(lpfcinfobuf));
|
|
if (phba && phba->pcidev){
|
|
/* Model Description */
|
|
scnprintf(tmp, sizeof(tmp), phba->ModelDesc);
|
|
if (strlcat(lpfcinfobuf, tmp, sizeof(lpfcinfobuf)) >=
|
|
sizeof(lpfcinfobuf))
|
|
goto buffer_done;
|
|
|
|
/* PCI Info */
|
|
scnprintf(tmp, sizeof(tmp),
|
|
" on PCI bus %02x device %02x irq %d",
|
|
phba->pcidev->bus->number, phba->pcidev->devfn,
|
|
phba->pcidev->irq);
|
|
if (strlcat(lpfcinfobuf, tmp, sizeof(lpfcinfobuf)) >=
|
|
sizeof(lpfcinfobuf))
|
|
goto buffer_done;
|
|
|
|
/* Port Number */
|
|
if (phba->Port[0]) {
|
|
scnprintf(tmp, sizeof(tmp), " port %s", phba->Port);
|
|
if (strlcat(lpfcinfobuf, tmp, sizeof(lpfcinfobuf)) >=
|
|
sizeof(lpfcinfobuf))
|
|
goto buffer_done;
|
|
}
|
|
|
|
/* Link Speed */
|
|
link_speed = lpfc_sli_port_speed_get(phba);
|
|
if (link_speed != 0) {
|
|
scnprintf(tmp, sizeof(tmp),
|
|
" Logical Link Speed: %d Mbps", link_speed);
|
|
if (strlcat(lpfcinfobuf, tmp, sizeof(lpfcinfobuf)) >=
|
|
sizeof(lpfcinfobuf))
|
|
goto buffer_done;
|
|
}
|
|
|
|
/* PCI resettable */
|
|
if (!lpfc_check_pci_resettable(phba)) {
|
|
scnprintf(tmp, sizeof(tmp), " PCI resettable");
|
|
strlcat(lpfcinfobuf, tmp, sizeof(lpfcinfobuf));
|
|
}
|
|
}
|
|
|
|
buffer_done:
|
|
return lpfcinfobuf;
|
|
}
|
|
|
|
/**
|
|
* lpfc_poll_rearm_timer - Routine to modify fcp_poll timer of hba
|
|
* @phba: The Hba for which this call is being executed.
|
|
*
|
|
* This routine modifies fcp_poll_timer field of @phba by cfg_poll_tmo.
|
|
* The default value of cfg_poll_tmo is 10 milliseconds.
|
|
**/
|
|
static __inline__ void lpfc_poll_rearm_timer(struct lpfc_hba * phba)
|
|
{
|
|
unsigned long poll_tmo_expires =
|
|
(jiffies + msecs_to_jiffies(phba->cfg_poll_tmo));
|
|
|
|
if (!list_empty(&phba->sli.sli3_ring[LPFC_FCP_RING].txcmplq))
|
|
mod_timer(&phba->fcp_poll_timer,
|
|
poll_tmo_expires);
|
|
}
|
|
|
|
/**
|
|
* lpfc_poll_start_timer - Routine to start fcp_poll_timer of HBA
|
|
* @phba: The Hba for which this call is being executed.
|
|
*
|
|
* This routine starts the fcp_poll_timer of @phba.
|
|
**/
|
|
void lpfc_poll_start_timer(struct lpfc_hba * phba)
|
|
{
|
|
lpfc_poll_rearm_timer(phba);
|
|
}
|
|
|
|
/**
|
|
* lpfc_poll_timeout - Restart polling timer
|
|
* @t: Timer construct where lpfc_hba data structure pointer is obtained.
|
|
*
|
|
* This routine restarts fcp_poll timer, when FCP ring polling is enable
|
|
* and FCP Ring interrupt is disable.
|
|
**/
|
|
void lpfc_poll_timeout(struct timer_list *t)
|
|
{
|
|
struct lpfc_hba *phba = from_timer(phba, t, fcp_poll_timer);
|
|
|
|
if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
|
|
lpfc_sli_handle_fast_ring_event(phba,
|
|
&phba->sli.sli3_ring[LPFC_FCP_RING], HA_R0RE_REQ);
|
|
|
|
if (phba->cfg_poll & DISABLE_FCP_RING_INT)
|
|
lpfc_poll_rearm_timer(phba);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* lpfc_is_command_vm_io - get the UUID from blk cgroup
|
|
* @cmd: Pointer to scsi_cmnd data structure
|
|
* Returns UUID if present, otherwise NULL
|
|
*/
|
|
static char *lpfc_is_command_vm_io(struct scsi_cmnd *cmd)
|
|
{
|
|
struct bio *bio = scsi_cmd_to_rq(cmd)->bio;
|
|
|
|
if (!IS_ENABLED(CONFIG_BLK_CGROUP_FC_APPID) || !bio)
|
|
return NULL;
|
|
return blkcg_get_fc_appid(bio);
|
|
}
|
|
|
|
/**
|
|
* lpfc_queuecommand - scsi_host_template queuecommand entry point
|
|
* @shost: kernel scsi host pointer.
|
|
* @cmnd: Pointer to scsi_cmnd data structure.
|
|
*
|
|
* Driver registers this routine to scsi midlayer to submit a @cmd to process.
|
|
* This routine prepares an IOCB from scsi command and provides to firmware.
|
|
* The @done callback is invoked after driver finished processing the command.
|
|
*
|
|
* Return value :
|
|
* 0 - Success
|
|
* SCSI_MLQUEUE_HOST_BUSY - Block all devices served by this host temporarily.
|
|
**/
|
|
static int
|
|
lpfc_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *cmnd)
|
|
{
|
|
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
|
|
struct lpfc_hba *phba = vport->phba;
|
|
struct lpfc_iocbq *cur_iocbq = NULL;
|
|
struct lpfc_rport_data *rdata;
|
|
struct lpfc_nodelist *ndlp;
|
|
struct lpfc_io_buf *lpfc_cmd;
|
|
struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
|
|
int err, idx;
|
|
u8 *uuid = NULL;
|
|
uint64_t start;
|
|
|
|
start = ktime_get_ns();
|
|
rdata = lpfc_rport_data_from_scsi_device(cmnd->device);
|
|
|
|
/* sanity check on references */
|
|
if (unlikely(!rdata) || unlikely(!rport))
|
|
goto out_fail_command;
|
|
|
|
err = fc_remote_port_chkready(rport);
|
|
if (err) {
|
|
cmnd->result = err;
|
|
goto out_fail_command;
|
|
}
|
|
ndlp = rdata->pnode;
|
|
|
|
if ((scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) &&
|
|
(!(phba->sli3_options & LPFC_SLI3_BG_ENABLED))) {
|
|
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
|
|
"9058 BLKGRD: ERROR: rcvd protected cmd:%02x"
|
|
" op:%02x str=%s without registering for"
|
|
" BlockGuard - Rejecting command\n",
|
|
cmnd->cmnd[0], scsi_get_prot_op(cmnd),
|
|
dif_op_str[scsi_get_prot_op(cmnd)]);
|
|
goto out_fail_command;
|
|
}
|
|
|
|
/*
|
|
* Catch race where our node has transitioned, but the
|
|
* transport is still transitioning.
|
|
*/
|
|
if (!ndlp)
|
|
goto out_tgt_busy1;
|
|
|
|
/* Check if IO qualifies for CMF */
|
|
if (phba->cmf_active_mode != LPFC_CFG_OFF &&
|
|
cmnd->sc_data_direction == DMA_FROM_DEVICE &&
|
|
(scsi_sg_count(cmnd))) {
|
|
/* Latency start time saved in rx_cmd_start later in routine */
|
|
err = lpfc_update_cmf_cmd(phba, scsi_bufflen(cmnd));
|
|
if (err)
|
|
goto out_tgt_busy1;
|
|
}
|
|
|
|
if (lpfc_ndlp_check_qdepth(phba, ndlp)) {
|
|
if (atomic_read(&ndlp->cmd_pending) >= ndlp->cmd_qdepth) {
|
|
lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP_ERROR,
|
|
"3377 Target Queue Full, scsi Id:%d "
|
|
"Qdepth:%d Pending command:%d"
|
|
" WWNN:%02x:%02x:%02x:%02x:"
|
|
"%02x:%02x:%02x:%02x, "
|
|
" WWPN:%02x:%02x:%02x:%02x:"
|
|
"%02x:%02x:%02x:%02x",
|
|
ndlp->nlp_sid, ndlp->cmd_qdepth,
|
|
atomic_read(&ndlp->cmd_pending),
|
|
ndlp->nlp_nodename.u.wwn[0],
|
|
ndlp->nlp_nodename.u.wwn[1],
|
|
ndlp->nlp_nodename.u.wwn[2],
|
|
ndlp->nlp_nodename.u.wwn[3],
|
|
ndlp->nlp_nodename.u.wwn[4],
|
|
ndlp->nlp_nodename.u.wwn[5],
|
|
ndlp->nlp_nodename.u.wwn[6],
|
|
ndlp->nlp_nodename.u.wwn[7],
|
|
ndlp->nlp_portname.u.wwn[0],
|
|
ndlp->nlp_portname.u.wwn[1],
|
|
ndlp->nlp_portname.u.wwn[2],
|
|
ndlp->nlp_portname.u.wwn[3],
|
|
ndlp->nlp_portname.u.wwn[4],
|
|
ndlp->nlp_portname.u.wwn[5],
|
|
ndlp->nlp_portname.u.wwn[6],
|
|
ndlp->nlp_portname.u.wwn[7]);
|
|
goto out_tgt_busy2;
|
|
}
|
|
}
|
|
|
|
lpfc_cmd = lpfc_get_scsi_buf(phba, ndlp, cmnd);
|
|
if (lpfc_cmd == NULL) {
|
|
lpfc_rampdown_queue_depth(phba);
|
|
|
|
lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP_ERROR,
|
|
"0707 driver's buffer pool is empty, "
|
|
"IO busied\n");
|
|
goto out_host_busy;
|
|
}
|
|
lpfc_cmd->rx_cmd_start = start;
|
|
|
|
cur_iocbq = &lpfc_cmd->cur_iocbq;
|
|
/*
|
|
* Store the midlayer's command structure for the completion phase
|
|
* and complete the command initialization.
|
|
*/
|
|
lpfc_cmd->pCmd = cmnd;
|
|
lpfc_cmd->rdata = rdata;
|
|
lpfc_cmd->ndlp = ndlp;
|
|
cur_iocbq->cmd_cmpl = NULL;
|
|
cmnd->host_scribble = (unsigned char *)lpfc_cmd;
|
|
|
|
err = lpfc_scsi_prep_cmnd(vport, lpfc_cmd, ndlp);
|
|
if (err)
|
|
goto out_host_busy_release_buf;
|
|
|
|
if (scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) {
|
|
if (vport->phba->cfg_enable_bg) {
|
|
lpfc_printf_vlog(vport,
|
|
KERN_INFO, LOG_SCSI_CMD,
|
|
"9033 BLKGRD: rcvd %s cmd:x%x "
|
|
"reftag x%x cnt %u pt %x\n",
|
|
dif_op_str[scsi_get_prot_op(cmnd)],
|
|
cmnd->cmnd[0],
|
|
scsi_prot_ref_tag(cmnd),
|
|
scsi_logical_block_count(cmnd),
|
|
(cmnd->cmnd[1]>>5));
|
|
}
|
|
err = lpfc_bg_scsi_prep_dma_buf(phba, lpfc_cmd);
|
|
} else {
|
|
if (vport->phba->cfg_enable_bg) {
|
|
lpfc_printf_vlog(vport,
|
|
KERN_INFO, LOG_SCSI_CMD,
|
|
"9038 BLKGRD: rcvd PROT_NORMAL cmd: "
|
|
"x%x reftag x%x cnt %u pt %x\n",
|
|
cmnd->cmnd[0],
|
|
scsi_prot_ref_tag(cmnd),
|
|
scsi_logical_block_count(cmnd),
|
|
(cmnd->cmnd[1]>>5));
|
|
}
|
|
err = lpfc_scsi_prep_dma_buf(phba, lpfc_cmd);
|
|
}
|
|
|
|
if (unlikely(err)) {
|
|
if (err == 2) {
|
|
cmnd->result = DID_ERROR << 16;
|
|
goto out_fail_command_release_buf;
|
|
}
|
|
goto out_host_busy_free_buf;
|
|
}
|
|
|
|
/* check the necessary and sufficient condition to support VMID */
|
|
if (lpfc_is_vmid_enabled(phba) &&
|
|
(ndlp->vmid_support ||
|
|
phba->pport->vmid_priority_tagging ==
|
|
LPFC_VMID_PRIO_TAG_ALL_TARGETS)) {
|
|
/* is the I/O generated by a VM, get the associated virtual */
|
|
/* entity id */
|
|
uuid = lpfc_is_command_vm_io(cmnd);
|
|
|
|
if (uuid) {
|
|
err = lpfc_vmid_get_appid(vport, uuid,
|
|
cmnd->sc_data_direction,
|
|
(union lpfc_vmid_io_tag *)
|
|
&cur_iocbq->vmid_tag);
|
|
if (!err)
|
|
cur_iocbq->cmd_flag |= LPFC_IO_VMID;
|
|
}
|
|
}
|
|
|
|
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
|
|
if (unlikely(phba->hdwqstat_on & LPFC_CHECK_SCSI_IO))
|
|
this_cpu_inc(phba->sli4_hba.c_stat->xmt_io);
|
|
#endif
|
|
/* Issue I/O to adapter */
|
|
err = lpfc_sli_issue_fcp_io(phba, LPFC_FCP_RING, cur_iocbq,
|
|
SLI_IOCB_RET_IOCB);
|
|
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
|
|
if (start) {
|
|
lpfc_cmd->ts_cmd_start = start;
|
|
lpfc_cmd->ts_last_cmd = phba->ktime_last_cmd;
|
|
lpfc_cmd->ts_cmd_wqput = ktime_get_ns();
|
|
} else {
|
|
lpfc_cmd->ts_cmd_start = 0;
|
|
}
|
|
#endif
|
|
if (err) {
|
|
lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
|
|
"3376 FCP could not issue iocb err %x "
|
|
"FCP cmd x%x <%d/%llu> "
|
|
"sid: x%x did: x%x oxid: x%x "
|
|
"Data: x%x x%x x%x x%x\n",
|
|
err, cmnd->cmnd[0],
|
|
cmnd->device ? cmnd->device->id : 0xffff,
|
|
cmnd->device ? cmnd->device->lun : (u64)-1,
|
|
vport->fc_myDID, ndlp->nlp_DID,
|
|
phba->sli_rev == LPFC_SLI_REV4 ?
|
|
cur_iocbq->sli4_xritag : 0xffff,
|
|
phba->sli_rev == LPFC_SLI_REV4 ?
|
|
phba->sli4_hba.rpi_ids[ndlp->nlp_rpi] :
|
|
cur_iocbq->iocb.ulpContext,
|
|
cur_iocbq->iotag,
|
|
phba->sli_rev == LPFC_SLI_REV4 ?
|
|
bf_get(wqe_tmo,
|
|
&cur_iocbq->wqe.generic.wqe_com) :
|
|
cur_iocbq->iocb.ulpTimeout,
|
|
(uint32_t)(scsi_cmd_to_rq(cmnd)->timeout / 1000));
|
|
|
|
goto out_host_busy_free_buf;
|
|
}
|
|
|
|
if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
|
|
lpfc_sli_handle_fast_ring_event(phba,
|
|
&phba->sli.sli3_ring[LPFC_FCP_RING], HA_R0RE_REQ);
|
|
|
|
if (phba->cfg_poll & DISABLE_FCP_RING_INT)
|
|
lpfc_poll_rearm_timer(phba);
|
|
}
|
|
|
|
if (phba->cfg_xri_rebalancing)
|
|
lpfc_keep_pvt_pool_above_lowwm(phba, lpfc_cmd->hdwq_no);
|
|
|
|
return 0;
|
|
|
|
out_host_busy_free_buf:
|
|
idx = lpfc_cmd->hdwq_no;
|
|
lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd);
|
|
if (phba->sli4_hba.hdwq) {
|
|
switch (lpfc_cmd->fcp_cmnd->fcpCntl3) {
|
|
case WRITE_DATA:
|
|
phba->sli4_hba.hdwq[idx].scsi_cstat.output_requests--;
|
|
break;
|
|
case READ_DATA:
|
|
phba->sli4_hba.hdwq[idx].scsi_cstat.input_requests--;
|
|
break;
|
|
default:
|
|
phba->sli4_hba.hdwq[idx].scsi_cstat.control_requests--;
|
|
}
|
|
}
|
|
out_host_busy_release_buf:
|
|
lpfc_release_scsi_buf(phba, lpfc_cmd);
|
|
out_host_busy:
|
|
lpfc_update_cmf_cmpl(phba, LPFC_CGN_NOT_SENT, scsi_bufflen(cmnd),
|
|
shost);
|
|
return SCSI_MLQUEUE_HOST_BUSY;
|
|
|
|
out_tgt_busy2:
|
|
lpfc_update_cmf_cmpl(phba, LPFC_CGN_NOT_SENT, scsi_bufflen(cmnd),
|
|
shost);
|
|
out_tgt_busy1:
|
|
return SCSI_MLQUEUE_TARGET_BUSY;
|
|
|
|
out_fail_command_release_buf:
|
|
lpfc_release_scsi_buf(phba, lpfc_cmd);
|
|
lpfc_update_cmf_cmpl(phba, LPFC_CGN_NOT_SENT, scsi_bufflen(cmnd),
|
|
shost);
|
|
|
|
out_fail_command:
|
|
scsi_done(cmnd);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* lpfc_vmid_vport_cleanup - cleans up the resources associated with a vport
|
|
* @vport: The virtual port for which this call is being executed.
|
|
*/
|
|
void lpfc_vmid_vport_cleanup(struct lpfc_vport *vport)
|
|
{
|
|
u32 bucket;
|
|
struct lpfc_vmid *cur;
|
|
|
|
if (vport->port_type == LPFC_PHYSICAL_PORT)
|
|
del_timer_sync(&vport->phba->inactive_vmid_poll);
|
|
|
|
kfree(vport->qfpa_res);
|
|
kfree(vport->vmid_priority.vmid_range);
|
|
kfree(vport->vmid);
|
|
|
|
if (!hash_empty(vport->hash_table))
|
|
hash_for_each(vport->hash_table, bucket, cur, hnode)
|
|
hash_del(&cur->hnode);
|
|
|
|
vport->qfpa_res = NULL;
|
|
vport->vmid_priority.vmid_range = NULL;
|
|
vport->vmid = NULL;
|
|
vport->cur_vmid_cnt = 0;
|
|
}
|
|
|
|
/**
|
|
* lpfc_abort_handler - scsi_host_template eh_abort_handler entry point
|
|
* @cmnd: Pointer to scsi_cmnd data structure.
|
|
*
|
|
* This routine aborts @cmnd pending in base driver.
|
|
*
|
|
* Return code :
|
|
* 0x2003 - Error
|
|
* 0x2002 - Success
|
|
**/
|
|
static int
|
|
lpfc_abort_handler(struct scsi_cmnd *cmnd)
|
|
{
|
|
struct Scsi_Host *shost = cmnd->device->host;
|
|
struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
|
|
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
|
|
struct lpfc_hba *phba = vport->phba;
|
|
struct lpfc_iocbq *iocb;
|
|
struct lpfc_io_buf *lpfc_cmd;
|
|
int ret = SUCCESS, status = 0;
|
|
struct lpfc_sli_ring *pring_s4 = NULL;
|
|
struct lpfc_sli_ring *pring = NULL;
|
|
int ret_val;
|
|
unsigned long flags;
|
|
DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waitq);
|
|
|
|
status = fc_block_rport(rport);
|
|
if (status != 0 && status != SUCCESS)
|
|
return status;
|
|
|
|
lpfc_cmd = (struct lpfc_io_buf *)cmnd->host_scribble;
|
|
if (!lpfc_cmd)
|
|
return ret;
|
|
|
|
/* Guard against IO completion being called at same time */
|
|
spin_lock_irqsave(&lpfc_cmd->buf_lock, flags);
|
|
|
|
spin_lock(&phba->hbalock);
|
|
/* driver queued commands are in process of being flushed */
|
|
if (phba->hba_flag & HBA_IOQ_FLUSH) {
|
|
lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
|
|
"3168 SCSI Layer abort requested I/O has been "
|
|
"flushed by LLD.\n");
|
|
ret = FAILED;
|
|
goto out_unlock_hba;
|
|
}
|
|
|
|
if (!lpfc_cmd->pCmd) {
|
|
lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
|
|
"2873 SCSI Layer I/O Abort Request IO CMPL Status "
|
|
"x%x ID %d LUN %llu\n",
|
|
SUCCESS, cmnd->device->id, cmnd->device->lun);
|
|
goto out_unlock_hba;
|
|
}
|
|
|
|
iocb = &lpfc_cmd->cur_iocbq;
|
|
if (phba->sli_rev == LPFC_SLI_REV4) {
|
|
pring_s4 = phba->sli4_hba.hdwq[iocb->hba_wqidx].io_wq->pring;
|
|
if (!pring_s4) {
|
|
ret = FAILED;
|
|
goto out_unlock_hba;
|
|
}
|
|
spin_lock(&pring_s4->ring_lock);
|
|
}
|
|
/* the command is in process of being cancelled */
|
|
if (!(iocb->cmd_flag & LPFC_IO_ON_TXCMPLQ)) {
|
|
lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
|
|
"3169 SCSI Layer abort requested I/O has been "
|
|
"cancelled by LLD.\n");
|
|
ret = FAILED;
|
|
goto out_unlock_ring;
|
|
}
|
|
/*
|
|
* If pCmd field of the corresponding lpfc_io_buf structure
|
|
* points to a different SCSI command, then the driver has
|
|
* already completed this command, but the midlayer did not
|
|
* see the completion before the eh fired. Just return SUCCESS.
|
|
*/
|
|
if (lpfc_cmd->pCmd != cmnd) {
|
|
lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
|
|
"3170 SCSI Layer abort requested I/O has been "
|
|
"completed by LLD.\n");
|
|
goto out_unlock_ring;
|
|
}
|
|
|
|
WARN_ON(iocb->io_buf != lpfc_cmd);
|
|
|
|
/* abort issued in recovery is still in progress */
|
|
if (iocb->cmd_flag & LPFC_DRIVER_ABORTED) {
|
|
lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
|
|
"3389 SCSI Layer I/O Abort Request is pending\n");
|
|
if (phba->sli_rev == LPFC_SLI_REV4)
|
|
spin_unlock(&pring_s4->ring_lock);
|
|
spin_unlock(&phba->hbalock);
|
|
spin_unlock_irqrestore(&lpfc_cmd->buf_lock, flags);
|
|
goto wait_for_cmpl;
|
|
}
|
|
|
|
lpfc_cmd->waitq = &waitq;
|
|
if (phba->sli_rev == LPFC_SLI_REV4) {
|
|
spin_unlock(&pring_s4->ring_lock);
|
|
ret_val = lpfc_sli4_issue_abort_iotag(phba, iocb,
|
|
lpfc_sli_abort_fcp_cmpl);
|
|
} else {
|
|
pring = &phba->sli.sli3_ring[LPFC_FCP_RING];
|
|
ret_val = lpfc_sli_issue_abort_iotag(phba, pring, iocb,
|
|
lpfc_sli_abort_fcp_cmpl);
|
|
}
|
|
|
|
/* Make sure HBA is alive */
|
|
lpfc_issue_hb_tmo(phba);
|
|
|
|
if (ret_val != IOCB_SUCCESS) {
|
|
/* Indicate the IO is not being aborted by the driver. */
|
|
lpfc_cmd->waitq = NULL;
|
|
ret = FAILED;
|
|
goto out_unlock_hba;
|
|
}
|
|
|
|
/* no longer need the lock after this point */
|
|
spin_unlock(&phba->hbalock);
|
|
spin_unlock_irqrestore(&lpfc_cmd->buf_lock, flags);
|
|
|
|
if (phba->cfg_poll & DISABLE_FCP_RING_INT)
|
|
lpfc_sli_handle_fast_ring_event(phba,
|
|
&phba->sli.sli3_ring[LPFC_FCP_RING], HA_R0RE_REQ);
|
|
|
|
wait_for_cmpl:
|
|
/*
|
|
* cmd_flag is set to LPFC_DRIVER_ABORTED before we wait
|
|
* for abort to complete.
|
|
*/
|
|
wait_event_timeout(waitq,
|
|
(lpfc_cmd->pCmd != cmnd),
|
|
msecs_to_jiffies(2*vport->cfg_devloss_tmo*1000));
|
|
|
|
spin_lock(&lpfc_cmd->buf_lock);
|
|
|
|
if (lpfc_cmd->pCmd == cmnd) {
|
|
ret = FAILED;
|
|
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
|
|
"0748 abort handler timed out waiting "
|
|
"for aborting I/O (xri:x%x) to complete: "
|
|
"ret %#x, ID %d, LUN %llu\n",
|
|
iocb->sli4_xritag, ret,
|
|
cmnd->device->id, cmnd->device->lun);
|
|
}
|
|
|
|
lpfc_cmd->waitq = NULL;
|
|
|
|
spin_unlock(&lpfc_cmd->buf_lock);
|
|
goto out;
|
|
|
|
out_unlock_ring:
|
|
if (phba->sli_rev == LPFC_SLI_REV4)
|
|
spin_unlock(&pring_s4->ring_lock);
|
|
out_unlock_hba:
|
|
spin_unlock(&phba->hbalock);
|
|
spin_unlock_irqrestore(&lpfc_cmd->buf_lock, flags);
|
|
out:
|
|
lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
|
|
"0749 SCSI Layer I/O Abort Request Status x%x ID %d "
|
|
"LUN %llu\n", ret, cmnd->device->id,
|
|
cmnd->device->lun);
|
|
return ret;
|
|
}
|
|
|
|
static char *
|
|
lpfc_taskmgmt_name(uint8_t task_mgmt_cmd)
|
|
{
|
|
switch (task_mgmt_cmd) {
|
|
case FCP_ABORT_TASK_SET:
|
|
return "ABORT_TASK_SET";
|
|
case FCP_CLEAR_TASK_SET:
|
|
return "FCP_CLEAR_TASK_SET";
|
|
case FCP_BUS_RESET:
|
|
return "FCP_BUS_RESET";
|
|
case FCP_LUN_RESET:
|
|
return "FCP_LUN_RESET";
|
|
case FCP_TARGET_RESET:
|
|
return "FCP_TARGET_RESET";
|
|
case FCP_CLEAR_ACA:
|
|
return "FCP_CLEAR_ACA";
|
|
case FCP_TERMINATE_TASK:
|
|
return "FCP_TERMINATE_TASK";
|
|
default:
|
|
return "unknown";
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* lpfc_check_fcp_rsp - check the returned fcp_rsp to see if task failed
|
|
* @vport: The virtual port for which this call is being executed.
|
|
* @lpfc_cmd: Pointer to lpfc_io_buf data structure.
|
|
*
|
|
* This routine checks the FCP RSP INFO to see if the tsk mgmt command succeded
|
|
*
|
|
* Return code :
|
|
* 0x2003 - Error
|
|
* 0x2002 - Success
|
|
**/
|
|
static int
|
|
lpfc_check_fcp_rsp(struct lpfc_vport *vport, struct lpfc_io_buf *lpfc_cmd)
|
|
{
|
|
struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp;
|
|
uint32_t rsp_info;
|
|
uint32_t rsp_len;
|
|
uint8_t rsp_info_code;
|
|
int ret = FAILED;
|
|
|
|
|
|
if (fcprsp == NULL)
|
|
lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
|
|
"0703 fcp_rsp is missing\n");
|
|
else {
|
|
rsp_info = fcprsp->rspStatus2;
|
|
rsp_len = be32_to_cpu(fcprsp->rspRspLen);
|
|
rsp_info_code = fcprsp->rspInfo3;
|
|
|
|
|
|
lpfc_printf_vlog(vport, KERN_INFO,
|
|
LOG_FCP,
|
|
"0706 fcp_rsp valid 0x%x,"
|
|
" rsp len=%d code 0x%x\n",
|
|
rsp_info,
|
|
rsp_len, rsp_info_code);
|
|
|
|
/* If FCP_RSP_LEN_VALID bit is one, then the FCP_RSP_LEN
|
|
* field specifies the number of valid bytes of FCP_RSP_INFO.
|
|
* The FCP_RSP_LEN field shall be set to 0x04 or 0x08
|
|
*/
|
|
if ((fcprsp->rspStatus2 & RSP_LEN_VALID) &&
|
|
((rsp_len == 8) || (rsp_len == 4))) {
|
|
switch (rsp_info_code) {
|
|
case RSP_NO_FAILURE:
|
|
lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
|
|
"0715 Task Mgmt No Failure\n");
|
|
ret = SUCCESS;
|
|
break;
|
|
case RSP_TM_NOT_SUPPORTED: /* TM rejected */
|
|
lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
|
|
"0716 Task Mgmt Target "
|
|
"reject\n");
|
|
break;
|
|
case RSP_TM_NOT_COMPLETED: /* TM failed */
|
|
lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
|
|
"0717 Task Mgmt Target "
|
|
"failed TM\n");
|
|
break;
|
|
case RSP_TM_INVALID_LU: /* TM to invalid LU! */
|
|
lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
|
|
"0718 Task Mgmt to invalid "
|
|
"LUN\n");
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
|
|
/**
|
|
* lpfc_send_taskmgmt - Generic SCSI Task Mgmt Handler
|
|
* @vport: The virtual port for which this call is being executed.
|
|
* @rport: Pointer to remote port
|
|
* @tgt_id: Target ID of remote device.
|
|
* @lun_id: Lun number for the TMF
|
|
* @task_mgmt_cmd: type of TMF to send
|
|
*
|
|
* This routine builds and sends a TMF (SCSI Task Mgmt Function) to
|
|
* a remote port.
|
|
*
|
|
* Return Code:
|
|
* 0x2003 - Error
|
|
* 0x2002 - Success.
|
|
**/
|
|
static int
|
|
lpfc_send_taskmgmt(struct lpfc_vport *vport, struct fc_rport *rport,
|
|
unsigned int tgt_id, uint64_t lun_id,
|
|
uint8_t task_mgmt_cmd)
|
|
{
|
|
struct lpfc_hba *phba = vport->phba;
|
|
struct lpfc_io_buf *lpfc_cmd;
|
|
struct lpfc_iocbq *iocbq;
|
|
struct lpfc_iocbq *iocbqrsp;
|
|
struct lpfc_rport_data *rdata;
|
|
struct lpfc_nodelist *pnode;
|
|
int ret;
|
|
int status;
|
|
|
|
rdata = rport->dd_data;
|
|
if (!rdata || !rdata->pnode)
|
|
return FAILED;
|
|
pnode = rdata->pnode;
|
|
|
|
lpfc_cmd = lpfc_get_scsi_buf(phba, rdata->pnode, NULL);
|
|
if (lpfc_cmd == NULL)
|
|
return FAILED;
|
|
lpfc_cmd->timeout = phba->cfg_task_mgmt_tmo;
|
|
lpfc_cmd->rdata = rdata;
|
|
lpfc_cmd->pCmd = NULL;
|
|
lpfc_cmd->ndlp = pnode;
|
|
|
|
status = phba->lpfc_scsi_prep_task_mgmt_cmd(vport, lpfc_cmd, lun_id,
|
|
task_mgmt_cmd);
|
|
if (!status) {
|
|
lpfc_release_scsi_buf(phba, lpfc_cmd);
|
|
return FAILED;
|
|
}
|
|
|
|
iocbq = &lpfc_cmd->cur_iocbq;
|
|
iocbqrsp = lpfc_sli_get_iocbq(phba);
|
|
if (iocbqrsp == NULL) {
|
|
lpfc_release_scsi_buf(phba, lpfc_cmd);
|
|
return FAILED;
|
|
}
|
|
iocbq->cmd_cmpl = lpfc_tskmgmt_def_cmpl;
|
|
iocbq->vport = vport;
|
|
|
|
lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
|
|
"0702 Issue %s to TGT %d LUN %llu "
|
|
"rpi x%x nlp_flag x%x Data: x%x x%x\n",
|
|
lpfc_taskmgmt_name(task_mgmt_cmd), tgt_id, lun_id,
|
|
pnode->nlp_rpi, pnode->nlp_flag, iocbq->sli4_xritag,
|
|
iocbq->cmd_flag);
|
|
|
|
status = lpfc_sli_issue_iocb_wait(phba, LPFC_FCP_RING,
|
|
iocbq, iocbqrsp, lpfc_cmd->timeout);
|
|
if ((status != IOCB_SUCCESS) ||
|
|
(get_job_ulpstatus(phba, iocbqrsp) != IOSTAT_SUCCESS)) {
|
|
if (status != IOCB_SUCCESS ||
|
|
get_job_ulpstatus(phba, iocbqrsp) != IOSTAT_FCP_RSP_ERROR)
|
|
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
|
|
"0727 TMF %s to TGT %d LUN %llu "
|
|
"failed (%d, %d) cmd_flag x%x\n",
|
|
lpfc_taskmgmt_name(task_mgmt_cmd),
|
|
tgt_id, lun_id,
|
|
get_job_ulpstatus(phba, iocbqrsp),
|
|
get_job_word4(phba, iocbqrsp),
|
|
iocbq->cmd_flag);
|
|
/* if ulpStatus != IOCB_SUCCESS, then status == IOCB_SUCCESS */
|
|
if (status == IOCB_SUCCESS) {
|
|
if (get_job_ulpstatus(phba, iocbqrsp) ==
|
|
IOSTAT_FCP_RSP_ERROR)
|
|
/* Something in the FCP_RSP was invalid.
|
|
* Check conditions */
|
|
ret = lpfc_check_fcp_rsp(vport, lpfc_cmd);
|
|
else
|
|
ret = FAILED;
|
|
} else if ((status == IOCB_TIMEDOUT) ||
|
|
(status == IOCB_ABORTED)) {
|
|
ret = TIMEOUT_ERROR;
|
|
} else {
|
|
ret = FAILED;
|
|
}
|
|
} else
|
|
ret = SUCCESS;
|
|
|
|
lpfc_sli_release_iocbq(phba, iocbqrsp);
|
|
|
|
if (status != IOCB_TIMEDOUT)
|
|
lpfc_release_scsi_buf(phba, lpfc_cmd);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* lpfc_chk_tgt_mapped -
|
|
* @vport: The virtual port to check on
|
|
* @rport: Pointer to fc_rport data structure.
|
|
*
|
|
* This routine delays until the scsi target (aka rport) for the
|
|
* command exists (is present and logged in) or we declare it non-existent.
|
|
*
|
|
* Return code :
|
|
* 0x2003 - Error
|
|
* 0x2002 - Success
|
|
**/
|
|
static int
|
|
lpfc_chk_tgt_mapped(struct lpfc_vport *vport, struct fc_rport *rport)
|
|
{
|
|
struct lpfc_rport_data *rdata;
|
|
struct lpfc_nodelist *pnode = NULL;
|
|
unsigned long later;
|
|
|
|
rdata = rport->dd_data;
|
|
if (!rdata) {
|
|
lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
|
|
"0797 Tgt Map rport failure: rdata x%px\n", rdata);
|
|
return FAILED;
|
|
}
|
|
pnode = rdata->pnode;
|
|
|
|
/*
|
|
* If target is not in a MAPPED state, delay until
|
|
* target is rediscovered or devloss timeout expires.
|
|
*/
|
|
later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies;
|
|
while (time_after(later, jiffies)) {
|
|
if (!pnode)
|
|
return FAILED;
|
|
if (pnode->nlp_state == NLP_STE_MAPPED_NODE)
|
|
return SUCCESS;
|
|
schedule_timeout_uninterruptible(msecs_to_jiffies(500));
|
|
rdata = rport->dd_data;
|
|
if (!rdata)
|
|
return FAILED;
|
|
pnode = rdata->pnode;
|
|
}
|
|
if (!pnode || (pnode->nlp_state != NLP_STE_MAPPED_NODE))
|
|
return FAILED;
|
|
return SUCCESS;
|
|
}
|
|
|
|
/**
|
|
* lpfc_reset_flush_io_context -
|
|
* @vport: The virtual port (scsi_host) for the flush context
|
|
* @tgt_id: If aborting by Target contect - specifies the target id
|
|
* @lun_id: If aborting by Lun context - specifies the lun id
|
|
* @context: specifies the context level to flush at.
|
|
*
|
|
* After a reset condition via TMF, we need to flush orphaned i/o
|
|
* contexts from the adapter. This routine aborts any contexts
|
|
* outstanding, then waits for their completions. The wait is
|
|
* bounded by devloss_tmo though.
|
|
*
|
|
* Return code :
|
|
* 0x2003 - Error
|
|
* 0x2002 - Success
|
|
**/
|
|
static int
|
|
lpfc_reset_flush_io_context(struct lpfc_vport *vport, uint16_t tgt_id,
|
|
uint64_t lun_id, lpfc_ctx_cmd context)
|
|
{
|
|
struct lpfc_hba *phba = vport->phba;
|
|
unsigned long later;
|
|
int cnt;
|
|
|
|
cnt = lpfc_sli_sum_iocb(vport, tgt_id, lun_id, context);
|
|
if (cnt)
|
|
lpfc_sli_abort_taskmgmt(vport,
|
|
&phba->sli.sli3_ring[LPFC_FCP_RING],
|
|
tgt_id, lun_id, context);
|
|
later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies;
|
|
while (time_after(later, jiffies) && cnt) {
|
|
schedule_timeout_uninterruptible(msecs_to_jiffies(20));
|
|
cnt = lpfc_sli_sum_iocb(vport, tgt_id, lun_id, context);
|
|
}
|
|
if (cnt) {
|
|
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
|
|
"0724 I/O flush failure for context %s : cnt x%x\n",
|
|
((context == LPFC_CTX_LUN) ? "LUN" :
|
|
((context == LPFC_CTX_TGT) ? "TGT" :
|
|
((context == LPFC_CTX_HOST) ? "HOST" : "Unknown"))),
|
|
cnt);
|
|
return FAILED;
|
|
}
|
|
return SUCCESS;
|
|
}
|
|
|
|
/**
|
|
* lpfc_device_reset_handler - scsi_host_template eh_device_reset entry point
|
|
* @cmnd: Pointer to scsi_cmnd data structure.
|
|
*
|
|
* This routine does a device reset by sending a LUN_RESET task management
|
|
* command.
|
|
*
|
|
* Return code :
|
|
* 0x2003 - Error
|
|
* 0x2002 - Success
|
|
**/
|
|
static int
|
|
lpfc_device_reset_handler(struct scsi_cmnd *cmnd)
|
|
{
|
|
struct Scsi_Host *shost = cmnd->device->host;
|
|
struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
|
|
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
|
|
struct lpfc_rport_data *rdata;
|
|
struct lpfc_nodelist *pnode;
|
|
unsigned tgt_id = cmnd->device->id;
|
|
uint64_t lun_id = cmnd->device->lun;
|
|
struct lpfc_scsi_event_header scsi_event;
|
|
int status;
|
|
u32 logit = LOG_FCP;
|
|
|
|
if (!rport)
|
|
return FAILED;
|
|
|
|
rdata = rport->dd_data;
|
|
if (!rdata || !rdata->pnode) {
|
|
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
|
|
"0798 Device Reset rdata failure: rdata x%px\n",
|
|
rdata);
|
|
return FAILED;
|
|
}
|
|
pnode = rdata->pnode;
|
|
status = fc_block_rport(rport);
|
|
if (status != 0 && status != SUCCESS)
|
|
return status;
|
|
|
|
status = lpfc_chk_tgt_mapped(vport, rport);
|
|
if (status == FAILED) {
|
|
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
|
|
"0721 Device Reset rport failure: rdata x%px\n", rdata);
|
|
return FAILED;
|
|
}
|
|
|
|
scsi_event.event_type = FC_REG_SCSI_EVENT;
|
|
scsi_event.subcategory = LPFC_EVENT_LUNRESET;
|
|
scsi_event.lun = lun_id;
|
|
memcpy(scsi_event.wwpn, &pnode->nlp_portname, sizeof(struct lpfc_name));
|
|
memcpy(scsi_event.wwnn, &pnode->nlp_nodename, sizeof(struct lpfc_name));
|
|
|
|
fc_host_post_vendor_event(shost, fc_get_event_number(),
|
|
sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID);
|
|
|
|
status = lpfc_send_taskmgmt(vport, rport, tgt_id, lun_id,
|
|
FCP_LUN_RESET);
|
|
if (status != SUCCESS)
|
|
logit = LOG_TRACE_EVENT;
|
|
|
|
lpfc_printf_vlog(vport, KERN_ERR, logit,
|
|
"0713 SCSI layer issued Device Reset (%d, %llu) "
|
|
"return x%x\n", tgt_id, lun_id, status);
|
|
|
|
/*
|
|
* We have to clean up i/o as : they may be orphaned by the TMF;
|
|
* or if the TMF failed, they may be in an indeterminate state.
|
|
* So, continue on.
|
|
* We will report success if all the i/o aborts successfully.
|
|
*/
|
|
if (status == SUCCESS)
|
|
status = lpfc_reset_flush_io_context(vport, tgt_id, lun_id,
|
|
LPFC_CTX_LUN);
|
|
|
|
return status;
|
|
}
|
|
|
|
/**
|
|
* lpfc_target_reset_handler - scsi_host_template eh_target_reset entry point
|
|
* @cmnd: Pointer to scsi_cmnd data structure.
|
|
*
|
|
* This routine does a target reset by sending a TARGET_RESET task management
|
|
* command.
|
|
*
|
|
* Return code :
|
|
* 0x2003 - Error
|
|
* 0x2002 - Success
|
|
**/
|
|
static int
|
|
lpfc_target_reset_handler(struct scsi_cmnd *cmnd)
|
|
{
|
|
struct Scsi_Host *shost = cmnd->device->host;
|
|
struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
|
|
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
|
|
struct lpfc_rport_data *rdata;
|
|
struct lpfc_nodelist *pnode;
|
|
unsigned tgt_id = cmnd->device->id;
|
|
uint64_t lun_id = cmnd->device->lun;
|
|
struct lpfc_scsi_event_header scsi_event;
|
|
int status;
|
|
u32 logit = LOG_FCP;
|
|
u32 dev_loss_tmo = vport->cfg_devloss_tmo;
|
|
unsigned long flags;
|
|
DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waitq);
|
|
|
|
if (!rport)
|
|
return FAILED;
|
|
|
|
rdata = rport->dd_data;
|
|
if (!rdata || !rdata->pnode) {
|
|
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
|
|
"0799 Target Reset rdata failure: rdata x%px\n",
|
|
rdata);
|
|
return FAILED;
|
|
}
|
|
pnode = rdata->pnode;
|
|
status = fc_block_rport(rport);
|
|
if (status != 0 && status != SUCCESS)
|
|
return status;
|
|
|
|
status = lpfc_chk_tgt_mapped(vport, rport);
|
|
if (status == FAILED) {
|
|
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
|
|
"0722 Target Reset rport failure: rdata x%px\n", rdata);
|
|
if (pnode) {
|
|
spin_lock_irqsave(&pnode->lock, flags);
|
|
pnode->nlp_flag &= ~NLP_NPR_ADISC;
|
|
pnode->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
|
|
spin_unlock_irqrestore(&pnode->lock, flags);
|
|
}
|
|
lpfc_reset_flush_io_context(vport, tgt_id, lun_id,
|
|
LPFC_CTX_TGT);
|
|
return FAST_IO_FAIL;
|
|
}
|
|
|
|
scsi_event.event_type = FC_REG_SCSI_EVENT;
|
|
scsi_event.subcategory = LPFC_EVENT_TGTRESET;
|
|
scsi_event.lun = 0;
|
|
memcpy(scsi_event.wwpn, &pnode->nlp_portname, sizeof(struct lpfc_name));
|
|
memcpy(scsi_event.wwnn, &pnode->nlp_nodename, sizeof(struct lpfc_name));
|
|
|
|
fc_host_post_vendor_event(shost, fc_get_event_number(),
|
|
sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID);
|
|
|
|
status = lpfc_send_taskmgmt(vport, rport, tgt_id, lun_id,
|
|
FCP_TARGET_RESET);
|
|
if (status != SUCCESS) {
|
|
logit = LOG_TRACE_EVENT;
|
|
|
|
/* Issue LOGO, if no LOGO is outstanding */
|
|
spin_lock_irqsave(&pnode->lock, flags);
|
|
if (!(pnode->save_flags & NLP_WAIT_FOR_LOGO) &&
|
|
!pnode->logo_waitq) {
|
|
pnode->logo_waitq = &waitq;
|
|
pnode->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
|
|
pnode->nlp_flag |= NLP_ISSUE_LOGO;
|
|
pnode->save_flags |= NLP_WAIT_FOR_LOGO;
|
|
spin_unlock_irqrestore(&pnode->lock, flags);
|
|
lpfc_unreg_rpi(vport, pnode);
|
|
wait_event_timeout(waitq,
|
|
(!(pnode->save_flags &
|
|
NLP_WAIT_FOR_LOGO)),
|
|
msecs_to_jiffies(dev_loss_tmo *
|
|
1000));
|
|
|
|
if (pnode->save_flags & NLP_WAIT_FOR_LOGO) {
|
|
lpfc_printf_vlog(vport, KERN_ERR, logit,
|
|
"0725 SCSI layer TGTRST "
|
|
"failed & LOGO TMO (%d, %llu) "
|
|
"return x%x\n",
|
|
tgt_id, lun_id, status);
|
|
spin_lock_irqsave(&pnode->lock, flags);
|
|
pnode->save_flags &= ~NLP_WAIT_FOR_LOGO;
|
|
} else {
|
|
spin_lock_irqsave(&pnode->lock, flags);
|
|
}
|
|
pnode->logo_waitq = NULL;
|
|
spin_unlock_irqrestore(&pnode->lock, flags);
|
|
status = SUCCESS;
|
|
|
|
} else {
|
|
spin_unlock_irqrestore(&pnode->lock, flags);
|
|
status = FAILED;
|
|
}
|
|
}
|
|
|
|
lpfc_printf_vlog(vport, KERN_ERR, logit,
|
|
"0723 SCSI layer issued Target Reset (%d, %llu) "
|
|
"return x%x\n", tgt_id, lun_id, status);
|
|
|
|
/*
|
|
* We have to clean up i/o as : they may be orphaned by the TMF;
|
|
* or if the TMF failed, they may be in an indeterminate state.
|
|
* So, continue on.
|
|
* We will report success if all the i/o aborts successfully.
|
|
*/
|
|
if (status == SUCCESS)
|
|
status = lpfc_reset_flush_io_context(vport, tgt_id, lun_id,
|
|
LPFC_CTX_TGT);
|
|
return status;
|
|
}
|
|
|
|
/**
|
|
* lpfc_host_reset_handler - scsi_host_template eh_host_reset_handler entry pt
|
|
* @cmnd: Pointer to scsi_cmnd data structure.
|
|
*
|
|
* This routine does host reset to the adaptor port. It brings the HBA
|
|
* offline, performs a board restart, and then brings the board back online.
|
|
* The lpfc_offline calls lpfc_sli_hba_down which will abort and local
|
|
* reject all outstanding SCSI commands to the host and error returned
|
|
* back to SCSI mid-level. As this will be SCSI mid-level's last resort
|
|
* of error handling, it will only return error if resetting of the adapter
|
|
* is not successful; in all other cases, will return success.
|
|
*
|
|
* Return code :
|
|
* 0x2003 - Error
|
|
* 0x2002 - Success
|
|
**/
|
|
static int
|
|
lpfc_host_reset_handler(struct scsi_cmnd *cmnd)
|
|
{
|
|
struct Scsi_Host *shost = cmnd->device->host;
|
|
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
|
|
struct lpfc_hba *phba = vport->phba;
|
|
int rc, ret = SUCCESS;
|
|
|
|
lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
|
|
"3172 SCSI layer issued Host Reset Data:\n");
|
|
|
|
lpfc_offline_prep(phba, LPFC_MBX_WAIT);
|
|
lpfc_offline(phba);
|
|
rc = lpfc_sli_brdrestart(phba);
|
|
if (rc)
|
|
goto error;
|
|
|
|
/* Wait for successful restart of adapter */
|
|
if (phba->sli_rev < LPFC_SLI_REV4) {
|
|
rc = lpfc_sli_chipset_init(phba);
|
|
if (rc)
|
|
goto error;
|
|
}
|
|
|
|
rc = lpfc_online(phba);
|
|
if (rc)
|
|
goto error;
|
|
|
|
lpfc_unblock_mgmt_io(phba);
|
|
|
|
return ret;
|
|
error:
|
|
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
|
|
"3323 Failed host reset\n");
|
|
lpfc_unblock_mgmt_io(phba);
|
|
return FAILED;
|
|
}
|
|
|
|
/**
|
|
* lpfc_slave_alloc - scsi_host_template slave_alloc entry point
|
|
* @sdev: Pointer to scsi_device.
|
|
*
|
|
* This routine populates the cmds_per_lun count + 2 scsi_bufs into this host's
|
|
* globally available list of scsi buffers. This routine also makes sure scsi
|
|
* buffer is not allocated more than HBA limit conveyed to midlayer. This list
|
|
* of scsi buffer exists for the lifetime of the driver.
|
|
*
|
|
* Return codes:
|
|
* non-0 - Error
|
|
* 0 - Success
|
|
**/
|
|
static int
|
|
lpfc_slave_alloc(struct scsi_device *sdev)
|
|
{
|
|
struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata;
|
|
struct lpfc_hba *phba = vport->phba;
|
|
struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
|
|
uint32_t total = 0;
|
|
uint32_t num_to_alloc = 0;
|
|
int num_allocated = 0;
|
|
uint32_t sdev_cnt;
|
|
struct lpfc_device_data *device_data;
|
|
unsigned long flags;
|
|
struct lpfc_name target_wwpn;
|
|
|
|
if (!rport || fc_remote_port_chkready(rport))
|
|
return -ENXIO;
|
|
|
|
if (phba->cfg_fof) {
|
|
|
|
/*
|
|
* Check to see if the device data structure for the lun
|
|
* exists. If not, create one.
|
|
*/
|
|
|
|
u64_to_wwn(rport->port_name, target_wwpn.u.wwn);
|
|
spin_lock_irqsave(&phba->devicelock, flags);
|
|
device_data = __lpfc_get_device_data(phba,
|
|
&phba->luns,
|
|
&vport->fc_portname,
|
|
&target_wwpn,
|
|
sdev->lun);
|
|
if (!device_data) {
|
|
spin_unlock_irqrestore(&phba->devicelock, flags);
|
|
device_data = lpfc_create_device_data(phba,
|
|
&vport->fc_portname,
|
|
&target_wwpn,
|
|
sdev->lun,
|
|
phba->cfg_XLanePriority,
|
|
true);
|
|
if (!device_data)
|
|
return -ENOMEM;
|
|
spin_lock_irqsave(&phba->devicelock, flags);
|
|
list_add_tail(&device_data->listentry, &phba->luns);
|
|
}
|
|
device_data->rport_data = rport->dd_data;
|
|
device_data->available = true;
|
|
spin_unlock_irqrestore(&phba->devicelock, flags);
|
|
sdev->hostdata = device_data;
|
|
} else {
|
|
sdev->hostdata = rport->dd_data;
|
|
}
|
|
sdev_cnt = atomic_inc_return(&phba->sdev_cnt);
|
|
|
|
/* For SLI4, all IO buffers are pre-allocated */
|
|
if (phba->sli_rev == LPFC_SLI_REV4)
|
|
return 0;
|
|
|
|
/* This code path is now ONLY for SLI3 adapters */
|
|
|
|
/*
|
|
* Populate the cmds_per_lun count scsi_bufs into this host's globally
|
|
* available list of scsi buffers. Don't allocate more than the
|
|
* HBA limit conveyed to the midlayer via the host structure. The
|
|
* formula accounts for the lun_queue_depth + error handlers + 1
|
|
* extra. This list of scsi bufs exists for the lifetime of the driver.
|
|
*/
|
|
total = phba->total_scsi_bufs;
|
|
num_to_alloc = vport->cfg_lun_queue_depth + 2;
|
|
|
|
/* If allocated buffers are enough do nothing */
|
|
if ((sdev_cnt * (vport->cfg_lun_queue_depth + 2)) < total)
|
|
return 0;
|
|
|
|
/* Allow some exchanges to be available always to complete discovery */
|
|
if (total >= phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) {
|
|
lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
|
|
"0704 At limitation of %d preallocated "
|
|
"command buffers\n", total);
|
|
return 0;
|
|
/* Allow some exchanges to be available always to complete discovery */
|
|
} else if (total + num_to_alloc >
|
|
phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) {
|
|
lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
|
|
"0705 Allocation request of %d "
|
|
"command buffers will exceed max of %d. "
|
|
"Reducing allocation request to %d.\n",
|
|
num_to_alloc, phba->cfg_hba_queue_depth,
|
|
(phba->cfg_hba_queue_depth - total));
|
|
num_to_alloc = phba->cfg_hba_queue_depth - total;
|
|
}
|
|
num_allocated = lpfc_new_scsi_buf_s3(vport, num_to_alloc);
|
|
if (num_to_alloc != num_allocated) {
|
|
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
|
|
"0708 Allocation request of %d "
|
|
"command buffers did not succeed. "
|
|
"Allocated %d buffers.\n",
|
|
num_to_alloc, num_allocated);
|
|
}
|
|
if (num_allocated > 0)
|
|
phba->total_scsi_bufs += num_allocated;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* lpfc_slave_configure - scsi_host_template slave_configure entry point
|
|
* @sdev: Pointer to scsi_device.
|
|
*
|
|
* This routine configures following items
|
|
* - Tag command queuing support for @sdev if supported.
|
|
* - Enable SLI polling for fcp ring if ENABLE_FCP_RING_POLLING flag is set.
|
|
*
|
|
* Return codes:
|
|
* 0 - Success
|
|
**/
|
|
static int
|
|
lpfc_slave_configure(struct scsi_device *sdev)
|
|
{
|
|
struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata;
|
|
struct lpfc_hba *phba = vport->phba;
|
|
|
|
scsi_change_queue_depth(sdev, vport->cfg_lun_queue_depth);
|
|
|
|
if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
|
|
lpfc_sli_handle_fast_ring_event(phba,
|
|
&phba->sli.sli3_ring[LPFC_FCP_RING], HA_R0RE_REQ);
|
|
if (phba->cfg_poll & DISABLE_FCP_RING_INT)
|
|
lpfc_poll_rearm_timer(phba);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* lpfc_slave_destroy - slave_destroy entry point of SHT data structure
|
|
* @sdev: Pointer to scsi_device.
|
|
*
|
|
* This routine sets @sdev hostatdata filed to null.
|
|
**/
|
|
static void
|
|
lpfc_slave_destroy(struct scsi_device *sdev)
|
|
{
|
|
struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata;
|
|
struct lpfc_hba *phba = vport->phba;
|
|
unsigned long flags;
|
|
struct lpfc_device_data *device_data = sdev->hostdata;
|
|
|
|
atomic_dec(&phba->sdev_cnt);
|
|
if ((phba->cfg_fof) && (device_data)) {
|
|
spin_lock_irqsave(&phba->devicelock, flags);
|
|
device_data->available = false;
|
|
if (!device_data->oas_enabled)
|
|
lpfc_delete_device_data(phba, device_data);
|
|
spin_unlock_irqrestore(&phba->devicelock, flags);
|
|
}
|
|
sdev->hostdata = NULL;
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* lpfc_create_device_data - creates and initializes device data structure for OAS
|
|
* @phba: Pointer to host bus adapter structure.
|
|
* @vport_wwpn: Pointer to vport's wwpn information
|
|
* @target_wwpn: Pointer to target's wwpn information
|
|
* @lun: Lun on target
|
|
* @pri: Priority
|
|
* @atomic_create: Flag to indicate if memory should be allocated using the
|
|
* GFP_ATOMIC flag or not.
|
|
*
|
|
* This routine creates a device data structure which will contain identifying
|
|
* information for the device (host wwpn, target wwpn, lun), state of OAS,
|
|
* whether or not the corresponding lun is available by the system,
|
|
* and pointer to the rport data.
|
|
*
|
|
* Return codes:
|
|
* NULL - Error
|
|
* Pointer to lpfc_device_data - Success
|
|
**/
|
|
struct lpfc_device_data*
|
|
lpfc_create_device_data(struct lpfc_hba *phba, struct lpfc_name *vport_wwpn,
|
|
struct lpfc_name *target_wwpn, uint64_t lun,
|
|
uint32_t pri, bool atomic_create)
|
|
{
|
|
|
|
struct lpfc_device_data *lun_info;
|
|
int memory_flags;
|
|
|
|
if (unlikely(!phba) || !vport_wwpn || !target_wwpn ||
|
|
!(phba->cfg_fof))
|
|
return NULL;
|
|
|
|
/* Attempt to create the device data to contain lun info */
|
|
|
|
if (atomic_create)
|
|
memory_flags = GFP_ATOMIC;
|
|
else
|
|
memory_flags = GFP_KERNEL;
|
|
lun_info = mempool_alloc(phba->device_data_mem_pool, memory_flags);
|
|
if (!lun_info)
|
|
return NULL;
|
|
INIT_LIST_HEAD(&lun_info->listentry);
|
|
lun_info->rport_data = NULL;
|
|
memcpy(&lun_info->device_id.vport_wwpn, vport_wwpn,
|
|
sizeof(struct lpfc_name));
|
|
memcpy(&lun_info->device_id.target_wwpn, target_wwpn,
|
|
sizeof(struct lpfc_name));
|
|
lun_info->device_id.lun = lun;
|
|
lun_info->oas_enabled = false;
|
|
lun_info->priority = pri;
|
|
lun_info->available = false;
|
|
return lun_info;
|
|
}
|
|
|
|
/**
|
|
* lpfc_delete_device_data - frees a device data structure for OAS
|
|
* @phba: Pointer to host bus adapter structure.
|
|
* @lun_info: Pointer to device data structure to free.
|
|
*
|
|
* This routine frees the previously allocated device data structure passed.
|
|
*
|
|
**/
|
|
void
|
|
lpfc_delete_device_data(struct lpfc_hba *phba,
|
|
struct lpfc_device_data *lun_info)
|
|
{
|
|
|
|
if (unlikely(!phba) || !lun_info ||
|
|
!(phba->cfg_fof))
|
|
return;
|
|
|
|
if (!list_empty(&lun_info->listentry))
|
|
list_del(&lun_info->listentry);
|
|
mempool_free(lun_info, phba->device_data_mem_pool);
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* __lpfc_get_device_data - returns the device data for the specified lun
|
|
* @phba: Pointer to host bus adapter structure.
|
|
* @list: Point to list to search.
|
|
* @vport_wwpn: Pointer to vport's wwpn information
|
|
* @target_wwpn: Pointer to target's wwpn information
|
|
* @lun: Lun on target
|
|
*
|
|
* This routine searches the list passed for the specified lun's device data.
|
|
* This function does not hold locks, it is the responsibility of the caller
|
|
* to ensure the proper lock is held before calling the function.
|
|
*
|
|
* Return codes:
|
|
* NULL - Error
|
|
* Pointer to lpfc_device_data - Success
|
|
**/
|
|
struct lpfc_device_data*
|
|
__lpfc_get_device_data(struct lpfc_hba *phba, struct list_head *list,
|
|
struct lpfc_name *vport_wwpn,
|
|
struct lpfc_name *target_wwpn, uint64_t lun)
|
|
{
|
|
|
|
struct lpfc_device_data *lun_info;
|
|
|
|
if (unlikely(!phba) || !list || !vport_wwpn || !target_wwpn ||
|
|
!phba->cfg_fof)
|
|
return NULL;
|
|
|
|
/* Check to see if the lun is already enabled for OAS. */
|
|
|
|
list_for_each_entry(lun_info, list, listentry) {
|
|
if ((memcmp(&lun_info->device_id.vport_wwpn, vport_wwpn,
|
|
sizeof(struct lpfc_name)) == 0) &&
|
|
(memcmp(&lun_info->device_id.target_wwpn, target_wwpn,
|
|
sizeof(struct lpfc_name)) == 0) &&
|
|
(lun_info->device_id.lun == lun))
|
|
return lun_info;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* lpfc_find_next_oas_lun - searches for the next oas lun
|
|
* @phba: Pointer to host bus adapter structure.
|
|
* @vport_wwpn: Pointer to vport's wwpn information
|
|
* @target_wwpn: Pointer to target's wwpn information
|
|
* @starting_lun: Pointer to the lun to start searching for
|
|
* @found_vport_wwpn: Pointer to the found lun's vport wwpn information
|
|
* @found_target_wwpn: Pointer to the found lun's target wwpn information
|
|
* @found_lun: Pointer to the found lun.
|
|
* @found_lun_status: Pointer to status of the found lun.
|
|
* @found_lun_pri: Pointer to priority of the found lun.
|
|
*
|
|
* This routine searches the luns list for the specified lun
|
|
* or the first lun for the vport/target. If the vport wwpn contains
|
|
* a zero value then a specific vport is not specified. In this case
|
|
* any vport which contains the lun will be considered a match. If the
|
|
* target wwpn contains a zero value then a specific target is not specified.
|
|
* In this case any target which contains the lun will be considered a
|
|
* match. If the lun is found, the lun, vport wwpn, target wwpn and lun status
|
|
* are returned. The function will also return the next lun if available.
|
|
* If the next lun is not found, starting_lun parameter will be set to
|
|
* NO_MORE_OAS_LUN.
|
|
*
|
|
* Return codes:
|
|
* non-0 - Error
|
|
* 0 - Success
|
|
**/
|
|
bool
|
|
lpfc_find_next_oas_lun(struct lpfc_hba *phba, struct lpfc_name *vport_wwpn,
|
|
struct lpfc_name *target_wwpn, uint64_t *starting_lun,
|
|
struct lpfc_name *found_vport_wwpn,
|
|
struct lpfc_name *found_target_wwpn,
|
|
uint64_t *found_lun,
|
|
uint32_t *found_lun_status,
|
|
uint32_t *found_lun_pri)
|
|
{
|
|
|
|
unsigned long flags;
|
|
struct lpfc_device_data *lun_info;
|
|
struct lpfc_device_id *device_id;
|
|
uint64_t lun;
|
|
bool found = false;
|
|
|
|
if (unlikely(!phba) || !vport_wwpn || !target_wwpn ||
|
|
!starting_lun || !found_vport_wwpn ||
|
|
!found_target_wwpn || !found_lun || !found_lun_status ||
|
|
(*starting_lun == NO_MORE_OAS_LUN) ||
|
|
!phba->cfg_fof)
|
|
return false;
|
|
|
|
lun = *starting_lun;
|
|
*found_lun = NO_MORE_OAS_LUN;
|
|
*starting_lun = NO_MORE_OAS_LUN;
|
|
|
|
/* Search for lun or the lun closet in value */
|
|
|
|
spin_lock_irqsave(&phba->devicelock, flags);
|
|
list_for_each_entry(lun_info, &phba->luns, listentry) {
|
|
if (((wwn_to_u64(vport_wwpn->u.wwn) == 0) ||
|
|
(memcmp(&lun_info->device_id.vport_wwpn, vport_wwpn,
|
|
sizeof(struct lpfc_name)) == 0)) &&
|
|
((wwn_to_u64(target_wwpn->u.wwn) == 0) ||
|
|
(memcmp(&lun_info->device_id.target_wwpn, target_wwpn,
|
|
sizeof(struct lpfc_name)) == 0)) &&
|
|
(lun_info->oas_enabled)) {
|
|
device_id = &lun_info->device_id;
|
|
if ((!found) &&
|
|
((lun == FIND_FIRST_OAS_LUN) ||
|
|
(device_id->lun == lun))) {
|
|
*found_lun = device_id->lun;
|
|
memcpy(found_vport_wwpn,
|
|
&device_id->vport_wwpn,
|
|
sizeof(struct lpfc_name));
|
|
memcpy(found_target_wwpn,
|
|
&device_id->target_wwpn,
|
|
sizeof(struct lpfc_name));
|
|
if (lun_info->available)
|
|
*found_lun_status =
|
|
OAS_LUN_STATUS_EXISTS;
|
|
else
|
|
*found_lun_status = 0;
|
|
*found_lun_pri = lun_info->priority;
|
|
if (phba->cfg_oas_flags & OAS_FIND_ANY_VPORT)
|
|
memset(vport_wwpn, 0x0,
|
|
sizeof(struct lpfc_name));
|
|
if (phba->cfg_oas_flags & OAS_FIND_ANY_TARGET)
|
|
memset(target_wwpn, 0x0,
|
|
sizeof(struct lpfc_name));
|
|
found = true;
|
|
} else if (found) {
|
|
*starting_lun = device_id->lun;
|
|
memcpy(vport_wwpn, &device_id->vport_wwpn,
|
|
sizeof(struct lpfc_name));
|
|
memcpy(target_wwpn, &device_id->target_wwpn,
|
|
sizeof(struct lpfc_name));
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
spin_unlock_irqrestore(&phba->devicelock, flags);
|
|
return found;
|
|
}
|
|
|
|
/**
|
|
* lpfc_enable_oas_lun - enables a lun for OAS operations
|
|
* @phba: Pointer to host bus adapter structure.
|
|
* @vport_wwpn: Pointer to vport's wwpn information
|
|
* @target_wwpn: Pointer to target's wwpn information
|
|
* @lun: Lun
|
|
* @pri: Priority
|
|
*
|
|
* This routine enables a lun for oas operations. The routines does so by
|
|
* doing the following :
|
|
*
|
|
* 1) Checks to see if the device data for the lun has been created.
|
|
* 2) If found, sets the OAS enabled flag if not set and returns.
|
|
* 3) Otherwise, creates a device data structure.
|
|
* 4) If successfully created, indicates the device data is for an OAS lun,
|
|
* indicates the lun is not available and add to the list of luns.
|
|
*
|
|
* Return codes:
|
|
* false - Error
|
|
* true - Success
|
|
**/
|
|
bool
|
|
lpfc_enable_oas_lun(struct lpfc_hba *phba, struct lpfc_name *vport_wwpn,
|
|
struct lpfc_name *target_wwpn, uint64_t lun, uint8_t pri)
|
|
{
|
|
|
|
struct lpfc_device_data *lun_info;
|
|
unsigned long flags;
|
|
|
|
if (unlikely(!phba) || !vport_wwpn || !target_wwpn ||
|
|
!phba->cfg_fof)
|
|
return false;
|
|
|
|
spin_lock_irqsave(&phba->devicelock, flags);
|
|
|
|
/* Check to see if the device data for the lun has been created */
|
|
lun_info = __lpfc_get_device_data(phba, &phba->luns, vport_wwpn,
|
|
target_wwpn, lun);
|
|
if (lun_info) {
|
|
if (!lun_info->oas_enabled)
|
|
lun_info->oas_enabled = true;
|
|
lun_info->priority = pri;
|
|
spin_unlock_irqrestore(&phba->devicelock, flags);
|
|
return true;
|
|
}
|
|
|
|
/* Create an lun info structure and add to list of luns */
|
|
lun_info = lpfc_create_device_data(phba, vport_wwpn, target_wwpn, lun,
|
|
pri, true);
|
|
if (lun_info) {
|
|
lun_info->oas_enabled = true;
|
|
lun_info->priority = pri;
|
|
lun_info->available = false;
|
|
list_add_tail(&lun_info->listentry, &phba->luns);
|
|
spin_unlock_irqrestore(&phba->devicelock, flags);
|
|
return true;
|
|
}
|
|
spin_unlock_irqrestore(&phba->devicelock, flags);
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* lpfc_disable_oas_lun - disables a lun for OAS operations
|
|
* @phba: Pointer to host bus adapter structure.
|
|
* @vport_wwpn: Pointer to vport's wwpn information
|
|
* @target_wwpn: Pointer to target's wwpn information
|
|
* @lun: Lun
|
|
* @pri: Priority
|
|
*
|
|
* This routine disables a lun for oas operations. The routines does so by
|
|
* doing the following :
|
|
*
|
|
* 1) Checks to see if the device data for the lun is created.
|
|
* 2) If present, clears the flag indicating this lun is for OAS.
|
|
* 3) If the lun is not available by the system, the device data is
|
|
* freed.
|
|
*
|
|
* Return codes:
|
|
* false - Error
|
|
* true - Success
|
|
**/
|
|
bool
|
|
lpfc_disable_oas_lun(struct lpfc_hba *phba, struct lpfc_name *vport_wwpn,
|
|
struct lpfc_name *target_wwpn, uint64_t lun, uint8_t pri)
|
|
{
|
|
|
|
struct lpfc_device_data *lun_info;
|
|
unsigned long flags;
|
|
|
|
if (unlikely(!phba) || !vport_wwpn || !target_wwpn ||
|
|
!phba->cfg_fof)
|
|
return false;
|
|
|
|
spin_lock_irqsave(&phba->devicelock, flags);
|
|
|
|
/* Check to see if the lun is available. */
|
|
lun_info = __lpfc_get_device_data(phba,
|
|
&phba->luns, vport_wwpn,
|
|
target_wwpn, lun);
|
|
if (lun_info) {
|
|
lun_info->oas_enabled = false;
|
|
lun_info->priority = pri;
|
|
if (!lun_info->available)
|
|
lpfc_delete_device_data(phba, lun_info);
|
|
spin_unlock_irqrestore(&phba->devicelock, flags);
|
|
return true;
|
|
}
|
|
|
|
spin_unlock_irqrestore(&phba->devicelock, flags);
|
|
return false;
|
|
}
|
|
|
|
static int
|
|
lpfc_no_command(struct Scsi_Host *shost, struct scsi_cmnd *cmnd)
|
|
{
|
|
return SCSI_MLQUEUE_HOST_BUSY;
|
|
}
|
|
|
|
static int
|
|
lpfc_no_slave(struct scsi_device *sdev)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
|
|
struct scsi_host_template lpfc_template_nvme = {
|
|
.module = THIS_MODULE,
|
|
.name = LPFC_DRIVER_NAME,
|
|
.proc_name = LPFC_DRIVER_NAME,
|
|
.info = lpfc_info,
|
|
.queuecommand = lpfc_no_command,
|
|
.slave_alloc = lpfc_no_slave,
|
|
.slave_configure = lpfc_no_slave,
|
|
.scan_finished = lpfc_scan_finished,
|
|
.this_id = -1,
|
|
.sg_tablesize = 1,
|
|
.cmd_per_lun = 1,
|
|
.shost_groups = lpfc_hba_groups,
|
|
.max_sectors = 0xFFFFFFFF,
|
|
.vendor_id = LPFC_NL_VENDOR_ID,
|
|
.track_queue_depth = 0,
|
|
};
|
|
|
|
struct scsi_host_template lpfc_template = {
|
|
.module = THIS_MODULE,
|
|
.name = LPFC_DRIVER_NAME,
|
|
.proc_name = LPFC_DRIVER_NAME,
|
|
.info = lpfc_info,
|
|
.queuecommand = lpfc_queuecommand,
|
|
.eh_timed_out = fc_eh_timed_out,
|
|
.eh_should_retry_cmd = fc_eh_should_retry_cmd,
|
|
.eh_abort_handler = lpfc_abort_handler,
|
|
.eh_device_reset_handler = lpfc_device_reset_handler,
|
|
.eh_target_reset_handler = lpfc_target_reset_handler,
|
|
.eh_host_reset_handler = lpfc_host_reset_handler,
|
|
.slave_alloc = lpfc_slave_alloc,
|
|
.slave_configure = lpfc_slave_configure,
|
|
.slave_destroy = lpfc_slave_destroy,
|
|
.scan_finished = lpfc_scan_finished,
|
|
.this_id = -1,
|
|
.sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT,
|
|
.cmd_per_lun = LPFC_CMD_PER_LUN,
|
|
.shost_groups = lpfc_hba_groups,
|
|
.max_sectors = 0xFFFFFFFF,
|
|
.vendor_id = LPFC_NL_VENDOR_ID,
|
|
.change_queue_depth = scsi_change_queue_depth,
|
|
.track_queue_depth = 1,
|
|
};
|
|
|
|
struct scsi_host_template lpfc_vport_template = {
|
|
.module = THIS_MODULE,
|
|
.name = LPFC_DRIVER_NAME,
|
|
.proc_name = LPFC_DRIVER_NAME,
|
|
.info = lpfc_info,
|
|
.queuecommand = lpfc_queuecommand,
|
|
.eh_timed_out = fc_eh_timed_out,
|
|
.eh_should_retry_cmd = fc_eh_should_retry_cmd,
|
|
.eh_abort_handler = lpfc_abort_handler,
|
|
.eh_device_reset_handler = lpfc_device_reset_handler,
|
|
.eh_target_reset_handler = lpfc_target_reset_handler,
|
|
.eh_bus_reset_handler = NULL,
|
|
.eh_host_reset_handler = NULL,
|
|
.slave_alloc = lpfc_slave_alloc,
|
|
.slave_configure = lpfc_slave_configure,
|
|
.slave_destroy = lpfc_slave_destroy,
|
|
.scan_finished = lpfc_scan_finished,
|
|
.this_id = -1,
|
|
.sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT,
|
|
.cmd_per_lun = LPFC_CMD_PER_LUN,
|
|
.shost_groups = lpfc_vport_groups,
|
|
.max_sectors = 0xFFFFFFFF,
|
|
.vendor_id = 0,
|
|
.change_queue_depth = scsi_change_queue_depth,
|
|
.track_queue_depth = 1,
|
|
};
|