5032 lines
148 KiB
C
5032 lines
148 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) 2004-2012 Emulex. All rights reserved. *
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* EMULEX and SLI are trademarks of Emulex. *
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* www.emulex.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 <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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int _dump_buf_done;
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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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static char *dif_grd_str[] = {
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"NO_GUARD",
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"DIF_CRC",
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"DIX_IP",
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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 void
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lpfc_release_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb);
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static void
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lpfc_release_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb);
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static void
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lpfc_debug_save_data(struct lpfc_hba *phba, struct scsi_cmnd *cmnd)
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{
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void *src, *dst;
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struct scatterlist *sgde = scsi_sglist(cmnd);
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if (!_dump_buf_data) {
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lpfc_printf_log(phba, KERN_ERR, LOG_BG,
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"9050 BLKGRD: ERROR %s _dump_buf_data is NULL\n",
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__func__);
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return;
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}
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if (!sgde) {
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lpfc_printf_log(phba, KERN_ERR, LOG_BG,
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"9051 BLKGRD: ERROR: data scatterlist is null\n");
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return;
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}
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dst = (void *) _dump_buf_data;
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while (sgde) {
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src = sg_virt(sgde);
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memcpy(dst, src, sgde->length);
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dst += sgde->length;
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sgde = sg_next(sgde);
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}
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}
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static void
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lpfc_debug_save_dif(struct lpfc_hba *phba, struct scsi_cmnd *cmnd)
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{
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void *src, *dst;
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struct scatterlist *sgde = scsi_prot_sglist(cmnd);
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if (!_dump_buf_dif) {
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lpfc_printf_log(phba, KERN_ERR, LOG_BG,
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"9052 BLKGRD: ERROR %s _dump_buf_data is NULL\n",
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__func__);
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return;
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}
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if (!sgde) {
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lpfc_printf_log(phba, KERN_ERR, LOG_BG,
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"9053 BLKGRD: ERROR: prot scatterlist is null\n");
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return;
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}
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dst = _dump_buf_dif;
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while (sgde) {
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src = sg_virt(sgde);
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memcpy(dst, src, sgde->length);
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dst += sgde->length;
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sgde = sg_next(sgde);
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}
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}
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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_scsi_buf *lpfc_cmd)
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{
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struct sli4_sge *sgl = (struct sli4_sge *)lpfc_cmd->fcp_bpl;
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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_update_stats - Update statistical data for the command completion
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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 when there is a command completion and this
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* function updates the statistical data for the command completion.
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**/
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static void
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lpfc_update_stats(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd)
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{
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struct lpfc_rport_data *rdata = lpfc_cmd->rdata;
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struct lpfc_nodelist *pnode = rdata->pnode;
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struct scsi_cmnd *cmd = lpfc_cmd->pCmd;
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unsigned long flags;
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struct Scsi_Host *shost = cmd->device->host;
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struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
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unsigned long latency;
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int i;
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if (cmd->result)
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return;
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latency = jiffies_to_msecs((long)jiffies - (long)lpfc_cmd->start_time);
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spin_lock_irqsave(shost->host_lock, flags);
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if (!vport->stat_data_enabled ||
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vport->stat_data_blocked ||
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!pnode ||
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!pnode->lat_data ||
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(phba->bucket_type == LPFC_NO_BUCKET)) {
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spin_unlock_irqrestore(shost->host_lock, flags);
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return;
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}
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if (phba->bucket_type == LPFC_LINEAR_BUCKET) {
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i = (latency + phba->bucket_step - 1 - phba->bucket_base)/
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phba->bucket_step;
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/* check array subscript bounds */
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if (i < 0)
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i = 0;
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else if (i >= LPFC_MAX_BUCKET_COUNT)
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i = LPFC_MAX_BUCKET_COUNT - 1;
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} else {
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for (i = 0; i < LPFC_MAX_BUCKET_COUNT-1; i++)
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if (latency <= (phba->bucket_base +
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((1<<i)*phba->bucket_step)))
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break;
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}
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pnode->lat_data[i].cmd_count++;
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spin_unlock_irqrestore(shost->host_lock, flags);
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}
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/**
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* lpfc_send_sdev_queuedepth_change_event - Posts a queuedepth change event
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* @phba: Pointer to HBA context object.
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* @vport: Pointer to vport object.
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* @ndlp: Pointer to FC node associated with the target.
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* @lun: Lun number of the scsi device.
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* @old_val: Old value of the queue depth.
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* @new_val: New value of the queue depth.
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*
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* This function sends an event to the mgmt application indicating
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* there is a change in the scsi device queue depth.
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**/
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static void
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lpfc_send_sdev_queuedepth_change_event(struct lpfc_hba *phba,
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struct lpfc_vport *vport,
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struct lpfc_nodelist *ndlp,
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uint32_t lun,
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uint32_t old_val,
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uint32_t new_val)
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{
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struct lpfc_fast_path_event *fast_path_evt;
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unsigned long flags;
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fast_path_evt = lpfc_alloc_fast_evt(phba);
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if (!fast_path_evt)
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return;
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fast_path_evt->un.queue_depth_evt.scsi_event.event_type =
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FC_REG_SCSI_EVENT;
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fast_path_evt->un.queue_depth_evt.scsi_event.subcategory =
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LPFC_EVENT_VARQUEDEPTH;
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/* Report all luns with change in queue depth */
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fast_path_evt->un.queue_depth_evt.scsi_event.lun = lun;
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if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
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memcpy(&fast_path_evt->un.queue_depth_evt.scsi_event.wwpn,
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&ndlp->nlp_portname, sizeof(struct lpfc_name));
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memcpy(&fast_path_evt->un.queue_depth_evt.scsi_event.wwnn,
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&ndlp->nlp_nodename, sizeof(struct lpfc_name));
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}
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fast_path_evt->un.queue_depth_evt.oldval = old_val;
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fast_path_evt->un.queue_depth_evt.newval = new_val;
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fast_path_evt->vport = vport;
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fast_path_evt->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT;
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spin_lock_irqsave(&phba->hbalock, flags);
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list_add_tail(&fast_path_evt->work_evt.evt_listp, &phba->work_list);
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spin_unlock_irqrestore(&phba->hbalock, flags);
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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_change_queue_depth - Alter scsi device queue depth
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* @sdev: Pointer the scsi device on which to change the queue depth.
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* @qdepth: New queue depth to set the sdev to.
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* @reason: The reason for the queue depth change.
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*
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* This function is called by the midlayer and the LLD to alter the queue
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* depth for a scsi device. This function sets the queue depth to the new
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* value and sends an event out to log the queue depth change.
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**/
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int
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lpfc_change_queue_depth(struct scsi_device *sdev, int qdepth, int reason)
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{
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struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata;
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struct lpfc_hba *phba = vport->phba;
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struct lpfc_rport_data *rdata;
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unsigned long new_queue_depth, old_queue_depth;
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old_queue_depth = sdev->queue_depth;
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scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
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new_queue_depth = sdev->queue_depth;
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rdata = sdev->hostdata;
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if (rdata)
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lpfc_send_sdev_queuedepth_change_event(phba, vport,
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rdata->pnode, sdev->lun,
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old_queue_depth,
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new_queue_depth);
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return sdev->queue_depth;
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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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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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if ((phba->last_ramp_down_time + QUEUE_RAMP_DOWN_INTERVAL) > 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_rampup_queue_depth - Post RAMP_UP_QUEUE event for 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 post WORKER_RAMP_UP_QUEUE event for @phba vport. This routine
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* post at most 1 event every 5 minute after last_ramp_up_time or
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* last_rsrc_error_time. This routine wakes up worker thread of @phba
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* 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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static inline void
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lpfc_rampup_queue_depth(struct lpfc_vport *vport,
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uint32_t queue_depth)
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{
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unsigned long flags;
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struct lpfc_hba *phba = vport->phba;
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uint32_t evt_posted;
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atomic_inc(&phba->num_cmd_success);
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if (vport->cfg_lun_queue_depth <= queue_depth)
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return;
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spin_lock_irqsave(&phba->hbalock, flags);
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if (time_before(jiffies,
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phba->last_ramp_up_time + QUEUE_RAMP_UP_INTERVAL) ||
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time_before(jiffies,
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phba->last_rsrc_error_time + QUEUE_RAMP_UP_INTERVAL)) {
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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_up_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_UP_QUEUE;
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if (!evt_posted)
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phba->pport->work_port_events |= WORKER_RAMP_UP_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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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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lpfc_change_queue_depth(sdev, new_queue_depth,
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SCSI_QDEPTH_DEFAULT);
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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_ramp_up_queue_handler - WORKER_RAMP_UP_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_UP_QUEUE event for worker
|
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* thread.This routine increases queue depth for all scsi device on each vport
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* associated with @phba by 1. This routine also sets @phba num_rsrc_err and
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* num_cmd_success to zero.
|
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**/
|
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void
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lpfc_ramp_up_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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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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if (vports[i]->cfg_lun_queue_depth <=
|
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sdev->queue_depth)
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continue;
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lpfc_change_queue_depth(sdev,
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sdev->queue_depth+1,
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SCSI_QDEPTH_RAMP_UP);
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}
|
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}
|
|
lpfc_destroy_vport_work_array(phba, vports);
|
|
atomic_set(&phba->num_rsrc_err, 0);
|
|
atomic_set(&phba->num_cmd_success, 0);
|
|
}
|
|
|
|
/**
|
|
* lpfc_scsi_dev_block - set all scsi hosts to block state
|
|
* @phba: Pointer to HBA context object.
|
|
*
|
|
* This function walks vport list and set each SCSI host to block state
|
|
* by invoking fc_remote_port_delete() routine. This function is invoked
|
|
* with EEH when device's PCI slot has been permanently disabled.
|
|
**/
|
|
void
|
|
lpfc_scsi_dev_block(struct lpfc_hba *phba)
|
|
{
|
|
struct lpfc_vport **vports;
|
|
struct Scsi_Host *shost;
|
|
struct scsi_device *sdev;
|
|
struct fc_rport *rport;
|
|
int i;
|
|
|
|
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]);
|
|
shost_for_each_device(sdev, shost) {
|
|
rport = starget_to_rport(scsi_target(sdev));
|
|
fc_remote_port_delete(rport);
|
|
}
|
|
}
|
|
lpfc_destroy_vport_work_array(phba, vports);
|
|
}
|
|
|
|
/**
|
|
* lpfc_new_scsi_buf_s3 - Scsi buffer allocator for HBA with SLI3 IF spec
|
|
* @vport: The virtual port for which this call being executed.
|
|
* @num_to_allocate: The requested number of buffers to allocate.
|
|
*
|
|
* This routine allocates a scsi buffer for device with SLI-3 interface spec,
|
|
* the scsi buffer contains all the necessary information needed to initiate
|
|
* a SCSI I/O. The non-DMAable buffer region contains information to build
|
|
* the IOCB. The DMAable region contains memory for the FCP CMND, FCP RSP,
|
|
* and the initial BPL. In addition to allocating memory, the FCP CMND and
|
|
* FCP RSP BDEs are setup in the BPL and the BPL BDE is setup in the IOCB.
|
|
*
|
|
* Return codes:
|
|
* int - number of scsi buffers that were allocated.
|
|
* 0 = failure, less than num_to_alloc is a partial failure.
|
|
**/
|
|
static int
|
|
lpfc_new_scsi_buf_s3(struct lpfc_vport *vport, int num_to_alloc)
|
|
{
|
|
struct lpfc_hba *phba = vport->phba;
|
|
struct lpfc_scsi_buf *psb;
|
|
struct ulp_bde64 *bpl;
|
|
IOCB_t *iocb;
|
|
dma_addr_t pdma_phys_fcp_cmd;
|
|
dma_addr_t pdma_phys_fcp_rsp;
|
|
dma_addr_t pdma_phys_bpl;
|
|
uint16_t iotag;
|
|
int bcnt;
|
|
|
|
for (bcnt = 0; bcnt < num_to_alloc; bcnt++) {
|
|
psb = kzalloc(sizeof(struct lpfc_scsi_buf), GFP_KERNEL);
|
|
if (!psb)
|
|
break;
|
|
|
|
/*
|
|
* Get memory from the pci pool to map the virt space to pci
|
|
* bus space for an I/O. The DMA buffer includes space for the
|
|
* struct fcp_cmnd, struct fcp_rsp and the number of bde's
|
|
* necessary to support the sg_tablesize.
|
|
*/
|
|
psb->data = pci_pool_alloc(phba->lpfc_scsi_dma_buf_pool,
|
|
GFP_KERNEL, &psb->dma_handle);
|
|
if (!psb->data) {
|
|
kfree(psb);
|
|
break;
|
|
}
|
|
|
|
/* Initialize virtual ptrs to dma_buf region. */
|
|
memset(psb->data, 0, phba->cfg_sg_dma_buf_size);
|
|
|
|
/* Allocate iotag for psb->cur_iocbq. */
|
|
iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq);
|
|
if (iotag == 0) {
|
|
pci_pool_free(phba->lpfc_scsi_dma_buf_pool,
|
|
psb->data, psb->dma_handle);
|
|
kfree(psb);
|
|
break;
|
|
}
|
|
psb->cur_iocbq.iocb_flag |= LPFC_IO_FCP;
|
|
|
|
psb->fcp_cmnd = psb->data;
|
|
psb->fcp_rsp = psb->data + sizeof(struct fcp_cmnd);
|
|
psb->fcp_bpl = psb->data + sizeof(struct fcp_cmnd) +
|
|
sizeof(struct fcp_rsp);
|
|
|
|
/* Initialize local short-hand pointers. */
|
|
bpl = psb->fcp_bpl;
|
|
pdma_phys_fcp_cmd = psb->dma_handle;
|
|
pdma_phys_fcp_rsp = psb->dma_handle + sizeof(struct fcp_cmnd);
|
|
pdma_phys_bpl = psb->dma_handle + sizeof(struct fcp_cmnd) +
|
|
sizeof(struct fcp_rsp);
|
|
|
|
/*
|
|
* The first two bdes are the FCP_CMD and FCP_RSP. The balance
|
|
* are sg list bdes. Initialize the first two and leave the
|
|
* rest for queuecommand.
|
|
*/
|
|
bpl[0].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_cmd));
|
|
bpl[0].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_cmd));
|
|
bpl[0].tus.f.bdeSize = sizeof(struct fcp_cmnd);
|
|
bpl[0].tus.f.bdeFlags = BUFF_TYPE_BDE_64;
|
|
bpl[0].tus.w = le32_to_cpu(bpl[0].tus.w);
|
|
|
|
/* Setup the physical region for the FCP RSP */
|
|
bpl[1].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_rsp));
|
|
bpl[1].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_rsp));
|
|
bpl[1].tus.f.bdeSize = sizeof(struct fcp_rsp);
|
|
bpl[1].tus.f.bdeFlags = BUFF_TYPE_BDE_64;
|
|
bpl[1].tus.w = le32_to_cpu(bpl[1].tus.w);
|
|
|
|
/*
|
|
* Since the IOCB for the FCP I/O is built into this
|
|
* lpfc_scsi_buf, initialize it with all known data now.
|
|
*/
|
|
iocb = &psb->cur_iocbq.iocb;
|
|
iocb->un.fcpi64.bdl.ulpIoTag32 = 0;
|
|
if ((phba->sli_rev == 3) &&
|
|
!(phba->sli3_options & LPFC_SLI3_BG_ENABLED)) {
|
|
/* fill in immediate fcp command BDE */
|
|
iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDE_IMMED;
|
|
iocb->un.fcpi64.bdl.bdeSize = sizeof(struct fcp_cmnd);
|
|
iocb->un.fcpi64.bdl.addrLow = offsetof(IOCB_t,
|
|
unsli3.fcp_ext.icd);
|
|
iocb->un.fcpi64.bdl.addrHigh = 0;
|
|
iocb->ulpBdeCount = 0;
|
|
iocb->ulpLe = 0;
|
|
/* fill in response BDE */
|
|
iocb->unsli3.fcp_ext.rbde.tus.f.bdeFlags =
|
|
BUFF_TYPE_BDE_64;
|
|
iocb->unsli3.fcp_ext.rbde.tus.f.bdeSize =
|
|
sizeof(struct fcp_rsp);
|
|
iocb->unsli3.fcp_ext.rbde.addrLow =
|
|
putPaddrLow(pdma_phys_fcp_rsp);
|
|
iocb->unsli3.fcp_ext.rbde.addrHigh =
|
|
putPaddrHigh(pdma_phys_fcp_rsp);
|
|
} else {
|
|
iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
|
|
iocb->un.fcpi64.bdl.bdeSize =
|
|
(2 * sizeof(struct ulp_bde64));
|
|
iocb->un.fcpi64.bdl.addrLow =
|
|
putPaddrLow(pdma_phys_bpl);
|
|
iocb->un.fcpi64.bdl.addrHigh =
|
|
putPaddrHigh(pdma_phys_bpl);
|
|
iocb->ulpBdeCount = 1;
|
|
iocb->ulpLe = 1;
|
|
}
|
|
iocb->ulpClass = CLASS3;
|
|
psb->status = IOSTAT_SUCCESS;
|
|
/* Put it back into the SCSI buffer list */
|
|
psb->cur_iocbq.context1 = psb;
|
|
lpfc_release_scsi_buf_s3(phba, psb);
|
|
|
|
}
|
|
|
|
return bcnt;
|
|
}
|
|
|
|
/**
|
|
* lpfc_sli4_vport_delete_fcp_xri_aborted -Remove all ndlp references for vport
|
|
* @vport: pointer to lpfc vport data structure.
|
|
*
|
|
* This routine is invoked by the vport cleanup for deletions and the cleanup
|
|
* for an ndlp on removal.
|
|
**/
|
|
void
|
|
lpfc_sli4_vport_delete_fcp_xri_aborted(struct lpfc_vport *vport)
|
|
{
|
|
struct lpfc_hba *phba = vport->phba;
|
|
struct lpfc_scsi_buf *psb, *next_psb;
|
|
unsigned long iflag = 0;
|
|
|
|
spin_lock_irqsave(&phba->hbalock, iflag);
|
|
spin_lock(&phba->sli4_hba.abts_scsi_buf_list_lock);
|
|
list_for_each_entry_safe(psb, next_psb,
|
|
&phba->sli4_hba.lpfc_abts_scsi_buf_list, list) {
|
|
if (psb->rdata && psb->rdata->pnode
|
|
&& psb->rdata->pnode->vport == vport)
|
|
psb->rdata = NULL;
|
|
}
|
|
spin_unlock(&phba->sli4_hba.abts_scsi_buf_list_lock);
|
|
spin_unlock_irqrestore(&phba->hbalock, iflag);
|
|
}
|
|
|
|
/**
|
|
* lpfc_sli4_fcp_xri_aborted - Fast-path process of fcp xri abort
|
|
* @phba: pointer to lpfc hba data structure.
|
|
* @axri: pointer to the fcp xri abort wcqe structure.
|
|
*
|
|
* This routine is invoked by the worker thread to process a SLI4 fast-path
|
|
* FCP aborted xri.
|
|
**/
|
|
void
|
|
lpfc_sli4_fcp_xri_aborted(struct lpfc_hba *phba,
|
|
struct sli4_wcqe_xri_aborted *axri)
|
|
{
|
|
uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri);
|
|
uint16_t rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri);
|
|
struct lpfc_scsi_buf *psb, *next_psb;
|
|
unsigned long iflag = 0;
|
|
struct lpfc_iocbq *iocbq;
|
|
int i;
|
|
struct lpfc_nodelist *ndlp;
|
|
int rrq_empty = 0;
|
|
struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
|
|
|
|
spin_lock_irqsave(&phba->hbalock, iflag);
|
|
spin_lock(&phba->sli4_hba.abts_scsi_buf_list_lock);
|
|
list_for_each_entry_safe(psb, next_psb,
|
|
&phba->sli4_hba.lpfc_abts_scsi_buf_list, list) {
|
|
if (psb->cur_iocbq.sli4_xritag == xri) {
|
|
list_del(&psb->list);
|
|
psb->exch_busy = 0;
|
|
psb->status = IOSTAT_SUCCESS;
|
|
spin_unlock(
|
|
&phba->sli4_hba.abts_scsi_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) {
|
|
lpfc_set_rrq_active(phba, ndlp, xri, rxid, 1);
|
|
lpfc_sli4_abts_err_handler(phba, ndlp, axri);
|
|
}
|
|
lpfc_release_scsi_buf_s4(phba, psb);
|
|
if (rrq_empty)
|
|
lpfc_worker_wake_up(phba);
|
|
return;
|
|
}
|
|
}
|
|
spin_unlock(&phba->sli4_hba.abts_scsi_buf_list_lock);
|
|
for (i = 1; i <= phba->sli.last_iotag; i++) {
|
|
iocbq = phba->sli.iocbq_lookup[i];
|
|
|
|
if (!(iocbq->iocb_flag & LPFC_IO_FCP) ||
|
|
(iocbq->iocb_flag & LPFC_IO_LIBDFC))
|
|
continue;
|
|
if (iocbq->sli4_xritag != xri)
|
|
continue;
|
|
psb = container_of(iocbq, struct lpfc_scsi_buf, cur_iocbq);
|
|
psb->exch_busy = 0;
|
|
spin_unlock_irqrestore(&phba->hbalock, iflag);
|
|
if (pring->txq_cnt)
|
|
lpfc_worker_wake_up(phba);
|
|
return;
|
|
|
|
}
|
|
spin_unlock_irqrestore(&phba->hbalock, iflag);
|
|
}
|
|
|
|
/**
|
|
* lpfc_sli4_repost_scsi_sgl_list - Repsot the Scsi buffers sgl pages as block
|
|
* @phba: pointer to lpfc hba data structure.
|
|
*
|
|
* This routine walks the list of scsi buffers that have been allocated and
|
|
* repost them to the HBA by using SGL block post. This is needed after a
|
|
* pci_function_reset/warm_start or start. The lpfc_hba_down_post_s4 routine
|
|
* is responsible for moving all scsi buffers on the lpfc_abts_scsi_sgl_list
|
|
* to the lpfc_scsi_buf_list. If the repost fails, reject all scsi buffers.
|
|
*
|
|
* Returns: 0 = success, non-zero failure.
|
|
**/
|
|
int
|
|
lpfc_sli4_repost_scsi_sgl_list(struct lpfc_hba *phba)
|
|
{
|
|
struct lpfc_scsi_buf *psb;
|
|
int index, status, bcnt = 0, rcnt = 0, rc = 0;
|
|
LIST_HEAD(sblist);
|
|
|
|
for (index = 0; index < phba->sli4_hba.scsi_xri_cnt; index++) {
|
|
psb = phba->sli4_hba.lpfc_scsi_psb_array[index];
|
|
if (psb) {
|
|
/* Remove from SCSI buffer list */
|
|
list_del(&psb->list);
|
|
/* Add it to a local SCSI buffer list */
|
|
list_add_tail(&psb->list, &sblist);
|
|
if (++rcnt == LPFC_NEMBED_MBOX_SGL_CNT) {
|
|
bcnt = rcnt;
|
|
rcnt = 0;
|
|
}
|
|
} else
|
|
/* A hole present in the XRI array, need to skip */
|
|
bcnt = rcnt;
|
|
|
|
if (index == phba->sli4_hba.scsi_xri_cnt - 1)
|
|
/* End of XRI array for SCSI buffer, complete */
|
|
bcnt = rcnt;
|
|
|
|
/* Continue until collect up to a nembed page worth of sgls */
|
|
if (bcnt == 0)
|
|
continue;
|
|
/* Now, post the SCSI buffer list sgls as a block */
|
|
if (!phba->sli4_hba.extents_in_use)
|
|
status = lpfc_sli4_post_scsi_sgl_block(phba,
|
|
&sblist,
|
|
bcnt);
|
|
else
|
|
status = lpfc_sli4_post_scsi_sgl_blk_ext(phba,
|
|
&sblist,
|
|
bcnt);
|
|
/* Reset SCSI buffer count for next round of posting */
|
|
bcnt = 0;
|
|
while (!list_empty(&sblist)) {
|
|
list_remove_head(&sblist, psb, struct lpfc_scsi_buf,
|
|
list);
|
|
if (status) {
|
|
/* Put this back on the abort scsi list */
|
|
psb->exch_busy = 1;
|
|
rc++;
|
|
} else {
|
|
psb->exch_busy = 0;
|
|
psb->status = IOSTAT_SUCCESS;
|
|
}
|
|
/* Put it back into the SCSI buffer list */
|
|
lpfc_release_scsi_buf_s4(phba, psb);
|
|
}
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* lpfc_new_scsi_buf_s4 - Scsi buffer allocator for HBA with SLI4 IF spec
|
|
* @vport: The virtual port for which this call being executed.
|
|
* @num_to_allocate: The requested number of buffers to allocate.
|
|
*
|
|
* This routine allocates a scsi buffer for device with SLI-4 interface spec,
|
|
* the scsi buffer contains all the necessary information needed to initiate
|
|
* a SCSI I/O.
|
|
*
|
|
* Return codes:
|
|
* int - number of scsi buffers that were allocated.
|
|
* 0 = failure, less than num_to_alloc is a partial failure.
|
|
**/
|
|
static int
|
|
lpfc_new_scsi_buf_s4(struct lpfc_vport *vport, int num_to_alloc)
|
|
{
|
|
struct lpfc_hba *phba = vport->phba;
|
|
struct lpfc_scsi_buf *psb;
|
|
struct sli4_sge *sgl;
|
|
IOCB_t *iocb;
|
|
dma_addr_t pdma_phys_fcp_cmd;
|
|
dma_addr_t pdma_phys_fcp_rsp;
|
|
dma_addr_t pdma_phys_bpl, pdma_phys_bpl1;
|
|
uint16_t iotag, last_xritag = NO_XRI, lxri = 0;
|
|
int status = 0, index;
|
|
int bcnt;
|
|
int non_sequential_xri = 0;
|
|
LIST_HEAD(sblist);
|
|
|
|
for (bcnt = 0; bcnt < num_to_alloc; bcnt++) {
|
|
psb = kzalloc(sizeof(struct lpfc_scsi_buf), GFP_KERNEL);
|
|
if (!psb)
|
|
break;
|
|
|
|
/*
|
|
* Get memory from the pci pool to map the virt space to pci bus
|
|
* space for an I/O. The DMA buffer includes space for the
|
|
* struct fcp_cmnd, struct fcp_rsp and the number of bde's
|
|
* necessary to support the sg_tablesize.
|
|
*/
|
|
psb->data = pci_pool_alloc(phba->lpfc_scsi_dma_buf_pool,
|
|
GFP_KERNEL, &psb->dma_handle);
|
|
if (!psb->data) {
|
|
kfree(psb);
|
|
break;
|
|
}
|
|
|
|
/* Initialize virtual ptrs to dma_buf region. */
|
|
memset(psb->data, 0, phba->cfg_sg_dma_buf_size);
|
|
|
|
/* Allocate iotag for psb->cur_iocbq. */
|
|
iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq);
|
|
if (iotag == 0) {
|
|
pci_pool_free(phba->lpfc_scsi_dma_buf_pool,
|
|
psb->data, psb->dma_handle);
|
|
kfree(psb);
|
|
break;
|
|
}
|
|
|
|
lxri = lpfc_sli4_next_xritag(phba);
|
|
if (lxri == NO_XRI) {
|
|
pci_pool_free(phba->lpfc_scsi_dma_buf_pool,
|
|
psb->data, psb->dma_handle);
|
|
kfree(psb);
|
|
break;
|
|
}
|
|
psb->cur_iocbq.sli4_lxritag = lxri;
|
|
psb->cur_iocbq.sli4_xritag = phba->sli4_hba.xri_ids[lxri];
|
|
if (last_xritag != NO_XRI
|
|
&& psb->cur_iocbq.sli4_xritag != (last_xritag+1)) {
|
|
non_sequential_xri = 1;
|
|
} else
|
|
list_add_tail(&psb->list, &sblist);
|
|
last_xritag = psb->cur_iocbq.sli4_xritag;
|
|
|
|
index = phba->sli4_hba.scsi_xri_cnt++;
|
|
psb->cur_iocbq.iocb_flag |= LPFC_IO_FCP;
|
|
|
|
psb->fcp_bpl = psb->data;
|
|
psb->fcp_cmnd = (psb->data + phba->cfg_sg_dma_buf_size)
|
|
- (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp));
|
|
psb->fcp_rsp = (struct fcp_rsp *)((uint8_t *)psb->fcp_cmnd +
|
|
sizeof(struct fcp_cmnd));
|
|
|
|
/* Initialize local short-hand pointers. */
|
|
sgl = (struct sli4_sge *)psb->fcp_bpl;
|
|
pdma_phys_bpl = psb->dma_handle;
|
|
pdma_phys_fcp_cmd =
|
|
(psb->dma_handle + phba->cfg_sg_dma_buf_size)
|
|
- (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp));
|
|
pdma_phys_fcp_rsp = pdma_phys_fcp_cmd + sizeof(struct fcp_cmnd);
|
|
|
|
/*
|
|
* The first two bdes are the FCP_CMD and FCP_RSP. The balance
|
|
* are sg list bdes. Initialize the first two and leave the
|
|
* rest for queuecommand.
|
|
*/
|
|
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 */
|
|
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));
|
|
|
|
/*
|
|
* Since the IOCB for the FCP I/O is built into this
|
|
* lpfc_scsi_buf, initialize it with all known data now.
|
|
*/
|
|
iocb = &psb->cur_iocbq.iocb;
|
|
iocb->un.fcpi64.bdl.ulpIoTag32 = 0;
|
|
iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDE_64;
|
|
/* setting the BLP size to 2 * sizeof BDE may not be correct.
|
|
* We are setting the bpl to point to out sgl. An sgl's
|
|
* entries are 16 bytes, a bpl entries are 12 bytes.
|
|
*/
|
|
iocb->un.fcpi64.bdl.bdeSize = sizeof(struct fcp_cmnd);
|
|
iocb->un.fcpi64.bdl.addrLow = putPaddrLow(pdma_phys_fcp_cmd);
|
|
iocb->un.fcpi64.bdl.addrHigh = putPaddrHigh(pdma_phys_fcp_cmd);
|
|
iocb->ulpBdeCount = 1;
|
|
iocb->ulpLe = 1;
|
|
iocb->ulpClass = CLASS3;
|
|
psb->cur_iocbq.context1 = psb;
|
|
if (phba->cfg_sg_dma_buf_size > SGL_PAGE_SIZE)
|
|
pdma_phys_bpl1 = pdma_phys_bpl + SGL_PAGE_SIZE;
|
|
else
|
|
pdma_phys_bpl1 = 0;
|
|
psb->dma_phys_bpl = pdma_phys_bpl;
|
|
phba->sli4_hba.lpfc_scsi_psb_array[index] = psb;
|
|
if (non_sequential_xri) {
|
|
status = lpfc_sli4_post_sgl(phba, pdma_phys_bpl,
|
|
pdma_phys_bpl1,
|
|
psb->cur_iocbq.sli4_xritag);
|
|
if (status) {
|
|
/* Put this back on the abort scsi list */
|
|
psb->exch_busy = 1;
|
|
} else {
|
|
psb->exch_busy = 0;
|
|
psb->status = IOSTAT_SUCCESS;
|
|
}
|
|
/* Put it back into the SCSI buffer list */
|
|
lpfc_release_scsi_buf_s4(phba, psb);
|
|
break;
|
|
}
|
|
}
|
|
if (bcnt) {
|
|
if (!phba->sli4_hba.extents_in_use)
|
|
status = lpfc_sli4_post_scsi_sgl_block(phba,
|
|
&sblist,
|
|
bcnt);
|
|
else
|
|
status = lpfc_sli4_post_scsi_sgl_blk_ext(phba,
|
|
&sblist,
|
|
bcnt);
|
|
|
|
if (status) {
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
|
|
"3021 SCSI SGL post error %d\n",
|
|
status);
|
|
bcnt = 0;
|
|
}
|
|
/* Reset SCSI buffer count for next round of posting */
|
|
while (!list_empty(&sblist)) {
|
|
list_remove_head(&sblist, psb, struct lpfc_scsi_buf,
|
|
list);
|
|
if (status) {
|
|
/* Put this back on the abort scsi list */
|
|
psb->exch_busy = 1;
|
|
} else {
|
|
psb->exch_busy = 0;
|
|
psb->status = IOSTAT_SUCCESS;
|
|
}
|
|
/* Put it back into the SCSI buffer list */
|
|
lpfc_release_scsi_buf_s4(phba, psb);
|
|
}
|
|
}
|
|
|
|
return bcnt + non_sequential_xri;
|
|
}
|
|
|
|
/**
|
|
* lpfc_new_scsi_buf - Wrapper funciton for scsi buffer allocator
|
|
* @vport: The virtual port for which this call being executed.
|
|
* @num_to_allocate: The requested number of buffers to allocate.
|
|
*
|
|
* This routine wraps the actual SCSI buffer allocator function pointer from
|
|
* the lpfc_hba struct.
|
|
*
|
|
* Return codes:
|
|
* int - number of scsi buffers that were allocated.
|
|
* 0 = failure, less than num_to_alloc is a partial failure.
|
|
**/
|
|
static inline int
|
|
lpfc_new_scsi_buf(struct lpfc_vport *vport, int num_to_alloc)
|
|
{
|
|
return vport->phba->lpfc_new_scsi_buf(vport, num_to_alloc);
|
|
}
|
|
|
|
/**
|
|
* 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.
|
|
*
|
|
* 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_scsi_buf*
|
|
lpfc_get_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
|
|
{
|
|
struct lpfc_scsi_buf * lpfc_cmd = NULL;
|
|
struct list_head *scsi_buf_list = &phba->lpfc_scsi_buf_list;
|
|
unsigned long iflag = 0;
|
|
|
|
spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag);
|
|
list_remove_head(scsi_buf_list, lpfc_cmd, struct lpfc_scsi_buf, list);
|
|
if (lpfc_cmd) {
|
|
lpfc_cmd->seg_cnt = 0;
|
|
lpfc_cmd->nonsg_phys = 0;
|
|
lpfc_cmd->prot_seg_cnt = 0;
|
|
}
|
|
spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag);
|
|
return lpfc_cmd;
|
|
}
|
|
/**
|
|
* lpfc_get_scsi_buf_s4 - Get a scsi buffer from lpfc_scsi_buf_list of the HBA
|
|
* @phba: The HBA for which this call is being executed.
|
|
*
|
|
* 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_scsi_buf*
|
|
lpfc_get_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
|
|
{
|
|
struct lpfc_scsi_buf *lpfc_cmd ;
|
|
unsigned long iflag = 0;
|
|
int found = 0;
|
|
|
|
spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag);
|
|
list_for_each_entry(lpfc_cmd, &phba->lpfc_scsi_buf_list,
|
|
list) {
|
|
if (lpfc_test_rrq_active(phba, ndlp,
|
|
lpfc_cmd->cur_iocbq.sli4_xritag))
|
|
continue;
|
|
list_del(&lpfc_cmd->list);
|
|
found = 1;
|
|
lpfc_cmd->seg_cnt = 0;
|
|
lpfc_cmd->nonsg_phys = 0;
|
|
lpfc_cmd->prot_seg_cnt = 0;
|
|
break;
|
|
}
|
|
spin_unlock_irqrestore(&phba->scsi_buf_list_lock,
|
|
iflag);
|
|
if (!found)
|
|
return NULL;
|
|
else
|
|
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.
|
|
*
|
|
* 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_scsi_buf*
|
|
lpfc_get_scsi_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
|
|
{
|
|
return phba->lpfc_get_scsi_buf(phba, ndlp);
|
|
}
|
|
|
|
/**
|
|
* 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_s3(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb)
|
|
{
|
|
unsigned long iflag = 0;
|
|
|
|
spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag);
|
|
psb->pCmd = NULL;
|
|
list_add_tail(&psb->list, &phba->lpfc_scsi_buf_list);
|
|
spin_unlock_irqrestore(&phba->scsi_buf_list_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 @phba
|
|
* lpfc_scsi_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_scsi_buf *psb)
|
|
{
|
|
unsigned long iflag = 0;
|
|
|
|
if (psb->exch_busy) {
|
|
spin_lock_irqsave(&phba->sli4_hba.abts_scsi_buf_list_lock,
|
|
iflag);
|
|
psb->pCmd = NULL;
|
|
list_add_tail(&psb->list,
|
|
&phba->sli4_hba.lpfc_abts_scsi_buf_list);
|
|
spin_unlock_irqrestore(&phba->sli4_hba.abts_scsi_buf_list_lock,
|
|
iflag);
|
|
} else {
|
|
|
|
spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag);
|
|
psb->pCmd = NULL;
|
|
list_add_tail(&psb->list, &phba->lpfc_scsi_buf_list);
|
|
spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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_scsi_buf *psb)
|
|
{
|
|
|
|
phba->lpfc_release_scsi_buf(phba, psb);
|
|
}
|
|
|
|
/**
|
|
* 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 bdea. 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_scsi_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 = lpfc_cmd->fcp_bpl;
|
|
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 pci_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_BG,
|
|
"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);
|
|
scsi_dma_unmap(scsi_cmnd);
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* 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->iocb_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->iocb_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);
|
|
return 0;
|
|
}
|
|
|
|
static inline unsigned
|
|
lpfc_cmd_blksize(struct scsi_cmnd *sc)
|
|
{
|
|
return sc->device->sector_size;
|
|
}
|
|
|
|
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
|
|
|
|
/* Return if if error injection is detected by Initiator */
|
|
#define BG_ERR_INIT 0x1
|
|
/* Return if if error injection is detected by Target */
|
|
#define BG_ERR_TGT 0x2
|
|
/* Return if if swapping CSUM<-->CRC is required for error injection */
|
|
#define BG_ERR_SWAP 0x10
|
|
/* Return 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 scatterlist *sgde; /* s/g data entry */
|
|
struct lpfc_scsi_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;
|
|
sector_t lba;
|
|
int rc = 0;
|
|
int blockoff = 0;
|
|
|
|
if (op == SCSI_PROT_NORMAL)
|
|
return 0;
|
|
|
|
sgpe = scsi_prot_sglist(sc);
|
|
sgde = scsi_sglist(sc);
|
|
lba = scsi_get_lba(sc);
|
|
|
|
/* First check if we need to match the LBA */
|
|
if (phba->lpfc_injerr_lba != LPFC_INJERR_LBA_OFF) {
|
|
blksize = lpfc_cmd_blksize(sc);
|
|
numblks = (scsi_bufflen(sc) + blksize - 1) / blksize;
|
|
|
|
/* Make sure we have the right LBA if one is specified */
|
|
if ((phba->lpfc_injerr_lba < lba) ||
|
|
(phba->lpfc_injerr_lba >= (lba + numblks)))
|
|
return 0;
|
|
if (sgpe) {
|
|
blockoff = phba->lpfc_injerr_lba - 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 = sc->device->hostdata;
|
|
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_scsi_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_BG,
|
|
"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;
|
|
}
|
|
/* Drop thru */
|
|
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_BG,
|
|
"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_BG,
|
|
"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_BG,
|
|
"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_BG,
|
|
"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;
|
|
}
|
|
/* Drop thru */
|
|
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_BG,
|
|
"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_BG,
|
|
"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_BG,
|
|
"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;
|
|
/* Drop thru */
|
|
|
|
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_BG,
|
|
"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_BG,
|
|
"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_BG,
|
|
"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
|
|
* @txopt: (out) BlockGuard operation for transmitted data
|
|
* @rxopt: (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 guard_type = scsi_host_get_guard(sc->device->host);
|
|
uint8_t ret = 0;
|
|
|
|
if (guard_type == SHOST_DIX_GUARD_IP) {
|
|
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_BG,
|
|
"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_BG,
|
|
"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
|
|
* @txopt: (out) BlockGuard operation for transmitted data
|
|
* @rxopt: (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)
|
|
{
|
|
uint8_t guard_type = scsi_host_get_guard(sc->device->host);
|
|
uint8_t ret = 0;
|
|
|
|
if (guard_type == SHOST_DIX_GUARD_IP) {
|
|
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 ret;
|
|
}
|
|
#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
|
|
* @datacnt: 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;
|
|
uint32_t rc;
|
|
uint32_t checking = 1;
|
|
uint32_t reftag;
|
|
unsigned blksize;
|
|
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*/
|
|
blksize = lpfc_cmd_blksize(sc);
|
|
reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */
|
|
|
|
#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);
|
|
if (datadir == DMA_FROM_DEVICE) {
|
|
bf_set(pde6_ce, pde6, checking);
|
|
bf_set(pde6_re, pde6, checking);
|
|
}
|
|
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_data = 0, 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;
|
|
uint32_t rc;
|
|
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_FCP,
|
|
"9020 Invalid s/g entry: data=0x%p prot=0x%p\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 = lpfc_cmd_blksize(sc);
|
|
reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */
|
|
|
|
#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 {
|
|
/* 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);
|
|
bf_set(pde6_ce, pde6, checking);
|
|
bf_set(pde6_re, pde6, checking);
|
|
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) {
|
|
if (!sgde) {
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_BG,
|
|
"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++;
|
|
curr_data++;
|
|
|
|
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_BG,
|
|
"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
|
|
* @datacnt: number of segments of data that have been dma mapped
|
|
*
|
|
* 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 int
|
|
lpfc_bg_setup_sgl(struct lpfc_hba *phba, struct scsi_cmnd *sc,
|
|
struct sli4_sge *sgl, int datasegcnt)
|
|
{
|
|
struct scatterlist *sgde = NULL; /* s/g data entry */
|
|
struct sli4_sge_diseed *diseed = NULL;
|
|
dma_addr_t physaddr;
|
|
int i = 0, num_sge = 0, status;
|
|
int datadir = sc->sc_data_direction;
|
|
uint32_t reftag;
|
|
unsigned blksize;
|
|
uint8_t txop, rxop;
|
|
uint32_t rc;
|
|
uint32_t checking = 1;
|
|
uint32_t dma_len;
|
|
uint32_t dma_offset = 0;
|
|
|
|
status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop);
|
|
if (status)
|
|
goto out;
|
|
|
|
/* extract some info from the scsi command for pde*/
|
|
blksize = lpfc_cmd_blksize(sc);
|
|
reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */
|
|
|
|
#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;
|
|
|
|
/* 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);
|
|
if (datadir == DMA_FROM_DEVICE) {
|
|
bf_set(lpfc_sli4_sge_dif_ce, diseed, checking);
|
|
bf_set(lpfc_sli4_sge_dif_re, diseed, checking);
|
|
}
|
|
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 */
|
|
scsi_for_each_sg(sc, sgde, datasegcnt, i) {
|
|
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));
|
|
if ((i + 1) == datasegcnt)
|
|
bf_set(lpfc_sli4_sge_last, sgl, 1);
|
|
else
|
|
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;
|
|
|
|
sgl++;
|
|
num_sge++;
|
|
}
|
|
|
|
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
|
|
*
|
|
* 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 int
|
|
lpfc_bg_setup_sgl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc,
|
|
struct sli4_sge *sgl, int datacnt, int protcnt)
|
|
{
|
|
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_data = 0, 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;
|
|
uint32_t rc;
|
|
uint32_t checking = 1;
|
|
uint32_t dma_offset = 0;
|
|
int num_sge = 0;
|
|
|
|
sgpe = scsi_prot_sglist(sc);
|
|
sgde = scsi_sglist(sc);
|
|
|
|
if (!sgpe || !sgde) {
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
|
|
"9082 Invalid s/g entry: data=0x%p prot=0x%p\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 = lpfc_cmd_blksize(sc);
|
|
reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */
|
|
|
|
#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 {
|
|
/* 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;
|
|
|
|
/* 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_ce, diseed, checking);
|
|
bf_set(lpfc_sli4_sge_dif_re, diseed, checking);
|
|
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++;
|
|
|
|
/* 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);
|
|
|
|
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 */
|
|
while (!pgdone) {
|
|
if (!sgde) {
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_BG,
|
|
"9086 BLKGRD:%s Invalid data segment\n",
|
|
__func__);
|
|
return 0;
|
|
}
|
|
sgl++;
|
|
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->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++;
|
|
curr_data++;
|
|
|
|
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;
|
|
sgl++;
|
|
continue;
|
|
}
|
|
|
|
/* are we done ? */
|
|
if (curr_prot == protcnt) {
|
|
bf_set(lpfc_sli4_sge_last, sgl, 1);
|
|
alldone = 1;
|
|
} else if (curr_prot < protcnt) {
|
|
/* advance to next prot buffer */
|
|
sgpe = sg_next(sgpe);
|
|
sgl++;
|
|
|
|
/* update the reference tag */
|
|
reftag += protgrp_blks;
|
|
} else {
|
|
/* if we're here, we have a bug */
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_BG,
|
|
"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:
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
|
|
"9021 Unsupported protection op:%d\n", op);
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* 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
|
|
**/
|
|
static int
|
|
lpfc_bg_scsi_prep_dma_buf_s3(struct lpfc_hba *phba,
|
|
struct lpfc_scsi_buf *lpfc_cmd)
|
|
{
|
|
struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
|
|
struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
|
|
struct ulp_bde64 *bpl = lpfc_cmd->fcp_bpl;
|
|
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 diflen, fcpdl;
|
|
unsigned blksize;
|
|
|
|
/*
|
|
* 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 pci_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;
|
|
if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) {
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_BG,
|
|
"9067 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);
|
|
scsi_dma_unmap(scsi_cmnd);
|
|
return 1;
|
|
}
|
|
|
|
prot_group_type = lpfc_prot_group_type(phba, scsi_cmnd);
|
|
|
|
switch (prot_group_type) {
|
|
case LPFC_PG_TYPE_NO_DIF:
|
|
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)
|
|
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;
|
|
if (lpfc_cmd->prot_seg_cnt
|
|
> phba->cfg_prot_sg_seg_cnt) {
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_BG,
|
|
"9068 BLKGRD: %s: Too many prot sg "
|
|
"segments from dma_map_sg. Config %d,"
|
|
"prot_seg_cnt %d\n", __func__,
|
|
phba->cfg_prot_sg_seg_cnt,
|
|
lpfc_cmd->prot_seg_cnt);
|
|
dma_unmap_sg(&phba->pcidev->dev,
|
|
scsi_prot_sglist(scsi_cmnd),
|
|
scsi_prot_sg_count(scsi_cmnd),
|
|
datadir);
|
|
scsi_dma_unmap(scsi_cmnd);
|
|
return 1;
|
|
}
|
|
|
|
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)
|
|
goto err;
|
|
break;
|
|
}
|
|
case LPFC_PG_TYPE_INVALID:
|
|
default:
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
|
|
"9022 Unexpected protection group %i\n",
|
|
prot_group_type);
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 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 = scsi_bufflen(scsi_cmnd);
|
|
|
|
if (scsi_get_prot_type(scsi_cmnd) == SCSI_PROT_DIF_TYPE1) {
|
|
/*
|
|
* We are in DIF Type 1 mode
|
|
* Every data block has a 8 byte DIF (trailer)
|
|
* attached to it. Must ajust FCP data length
|
|
*/
|
|
blksize = lpfc_cmd_blksize(scsi_cmnd);
|
|
diflen = (fcpdl / blksize) * 8;
|
|
fcpdl += diflen;
|
|
}
|
|
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;
|
|
|
|
return 0;
|
|
err:
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
|
|
"9023 Could not setup all needed BDE's"
|
|
"prot_group_type=%d, num_bde=%d\n",
|
|
prot_group_type, num_bde);
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* 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_scsi_buf *lpfc_cmd,
|
|
struct lpfc_iocbq *pIocbOut)
|
|
{
|
|
struct scsi_cmnd *cmd = lpfc_cmd->pCmd;
|
|
struct sli3_bg_fields *bgf = &pIocbOut->iocb.unsli3.sli3_bg;
|
|
int ret = 0;
|
|
uint32_t bghm = bgf->bghm;
|
|
uint32_t bgstat = bgf->bgstat;
|
|
uint64_t failing_sector = 0;
|
|
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9069 BLKGRD: BG ERROR in cmd"
|
|
" 0x%x lba 0x%llx blk cnt 0x%x "
|
|
"bgstat=0x%x bghm=0x%x\n",
|
|
cmd->cmnd[0], (unsigned long long)scsi_get_lba(cmd),
|
|
blk_rq_sectors(cmd->request), bgstat, bghm);
|
|
|
|
spin_lock(&_dump_buf_lock);
|
|
if (!_dump_buf_done) {
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9070 BLKGRD: Saving"
|
|
" Data for %u blocks to debugfs\n",
|
|
(cmd->cmnd[7] << 8 | cmd->cmnd[8]));
|
|
lpfc_debug_save_data(phba, cmd);
|
|
|
|
/* If we have a prot sgl, save the DIF buffer */
|
|
if (lpfc_prot_group_type(phba, cmd) ==
|
|
LPFC_PG_TYPE_DIF_BUF) {
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9071 BLKGRD: "
|
|
"Saving DIF for %u blocks to debugfs\n",
|
|
(cmd->cmnd[7] << 8 | cmd->cmnd[8]));
|
|
lpfc_debug_save_dif(phba, cmd);
|
|
}
|
|
|
|
_dump_buf_done = 1;
|
|
}
|
|
spin_unlock(&_dump_buf_lock);
|
|
|
|
if (lpfc_bgs_get_invalid_prof(bgstat)) {
|
|
cmd->result = ScsiResult(DID_ERROR, 0);
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9072 BLKGRD: Invalid"
|
|
" BlockGuard profile. bgstat:0x%x\n",
|
|
bgstat);
|
|
ret = (-1);
|
|
goto out;
|
|
}
|
|
|
|
if (lpfc_bgs_get_uninit_dif_block(bgstat)) {
|
|
cmd->result = ScsiResult(DID_ERROR, 0);
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9073 BLKGRD: "
|
|
"Invalid BlockGuard DIF Block. bgstat:0x%x\n",
|
|
bgstat);
|
|
ret = (-1);
|
|
goto out;
|
|
}
|
|
|
|
if (lpfc_bgs_get_guard_err(bgstat)) {
|
|
ret = 1;
|
|
|
|
scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
|
|
0x10, 0x1);
|
|
cmd->result = DRIVER_SENSE << 24
|
|
| ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION);
|
|
phba->bg_guard_err_cnt++;
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_BG,
|
|
"9055 BLKGRD: guard_tag error\n");
|
|
}
|
|
|
|
if (lpfc_bgs_get_reftag_err(bgstat)) {
|
|
ret = 1;
|
|
|
|
scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
|
|
0x10, 0x3);
|
|
cmd->result = DRIVER_SENSE << 24
|
|
| ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION);
|
|
|
|
phba->bg_reftag_err_cnt++;
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_BG,
|
|
"9056 BLKGRD: ref_tag error\n");
|
|
}
|
|
|
|
if (lpfc_bgs_get_apptag_err(bgstat)) {
|
|
ret = 1;
|
|
|
|
scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
|
|
0x10, 0x2);
|
|
cmd->result = DRIVER_SENSE << 24
|
|
| ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION);
|
|
|
|
phba->bg_apptag_err_cnt++;
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_BG,
|
|
"9061 BLKGRD: app_tag error\n");
|
|
}
|
|
|
|
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? */
|
|
cmd->result = ScsiResult(DID_ERROR, 0);
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_BG,
|
|
"9057 BLKGRD: Unknown error reported!\n");
|
|
}
|
|
|
|
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:
|
|
* 1 - Error
|
|
* 0 - Success
|
|
**/
|
|
static int
|
|
lpfc_scsi_prep_dma_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_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->fcp_bpl;
|
|
struct sli4_sge *first_data_sgl;
|
|
IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
|
|
dma_addr_t physaddr;
|
|
uint32_t num_bde = 0;
|
|
uint32_t dma_len;
|
|
uint32_t dma_offset = 0;
|
|
int nseg;
|
|
struct ulp_bde64 *bde;
|
|
|
|
/*
|
|
* 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 pci_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))
|
|
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 (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) {
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_BG, "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);
|
|
scsi_dma_unmap(scsi_cmnd);
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
scsi_for_each_sg(scsi_cmnd, sgel, nseg, num_bde) {
|
|
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));
|
|
sgl->word2 = le32_to_cpu(sgl->word2);
|
|
if ((num_bde + 1) == nseg)
|
|
bf_set(lpfc_sli4_sge_last, sgl, 1);
|
|
else
|
|
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->word2 = cpu_to_le32(sgl->word2);
|
|
sgl->sge_len = cpu_to_le32(dma_len);
|
|
dma_offset += dma_len;
|
|
sgl++;
|
|
}
|
|
/* setup the performance hint (first data BDE) if enabled */
|
|
if (phba->sli3_options & LPFC_SLI4_PERFH_ENABLED) {
|
|
bde = (struct ulp_bde64 *)
|
|
&(iocb_cmd->unsli3.sli3Words[5]);
|
|
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);
|
|
}
|
|
} else {
|
|
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, 1);
|
|
sgl->word2 = cpu_to_le32(sgl->word2);
|
|
}
|
|
|
|
/*
|
|
* 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));
|
|
|
|
/*
|
|
* 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);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* 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_scsi_buf *lpfc_cmd)
|
|
{
|
|
struct scsi_cmnd *sc = lpfc_cmd->pCmd;
|
|
int diflen, fcpdl;
|
|
unsigned blksize;
|
|
|
|
fcpdl = scsi_bufflen(sc);
|
|
|
|
/* Check if there is protection data on the wire */
|
|
if (sc->sc_data_direction == DMA_FROM_DEVICE) {
|
|
/* Read */
|
|
if (scsi_get_prot_op(sc) == SCSI_PROT_READ_INSERT)
|
|
return fcpdl;
|
|
|
|
} else {
|
|
/* Write */
|
|
if (scsi_get_prot_op(sc) == SCSI_PROT_WRITE_STRIP)
|
|
return fcpdl;
|
|
}
|
|
|
|
/* If protection data on the wire, adjust the count accordingly */
|
|
blksize = lpfc_cmd_blksize(sc);
|
|
diflen = (fcpdl / blksize) * 8;
|
|
fcpdl += diflen;
|
|
return fcpdl;
|
|
}
|
|
|
|
/**
|
|
* 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
|
|
**/
|
|
static int
|
|
lpfc_bg_scsi_prep_dma_buf_s4(struct lpfc_hba *phba,
|
|
struct lpfc_scsi_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->fcp_bpl);
|
|
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;
|
|
|
|
/*
|
|
* Start the lpfc command prep by bumping the sgl beyond fcp_cmnd
|
|
* fcp_rsp regions to the first data bde entry
|
|
*/
|
|
if (scsi_sg_count(scsi_cmnd)) {
|
|
/*
|
|
* The driver stores the segment count returned from pci_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;
|
|
if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) {
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_BG,
|
|
"9087 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);
|
|
scsi_dma_unmap(scsi_cmnd);
|
|
return 1;
|
|
}
|
|
|
|
prot_group_type = lpfc_prot_group_type(phba, scsi_cmnd);
|
|
|
|
switch (prot_group_type) {
|
|
case LPFC_PG_TYPE_NO_DIF:
|
|
num_bde = lpfc_bg_setup_sgl(phba, scsi_cmnd, sgl,
|
|
datasegcnt);
|
|
/* we should have 2 or more entries in buffer list */
|
|
if (num_bde < 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;
|
|
if (lpfc_cmd->prot_seg_cnt
|
|
> phba->cfg_prot_sg_seg_cnt) {
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_BG,
|
|
"9088 BLKGRD: %s: Too many prot sg "
|
|
"segments from dma_map_sg. Config %d,"
|
|
"prot_seg_cnt %d\n", __func__,
|
|
phba->cfg_prot_sg_seg_cnt,
|
|
lpfc_cmd->prot_seg_cnt);
|
|
dma_unmap_sg(&phba->pcidev->dev,
|
|
scsi_prot_sglist(scsi_cmnd),
|
|
scsi_prot_sg_count(scsi_cmnd),
|
|
datadir);
|
|
scsi_dma_unmap(scsi_cmnd);
|
|
return 1;
|
|
}
|
|
|
|
num_bde = lpfc_bg_setup_sgl_prot(phba, scsi_cmnd, sgl,
|
|
datasegcnt, protsegcnt);
|
|
/* we should have 3 or more entries in buffer list */
|
|
if (num_bde < 3)
|
|
goto err;
|
|
break;
|
|
}
|
|
case LPFC_PG_TYPE_INVALID:
|
|
default:
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
|
|
"9083 Unexpected protection group %i\n",
|
|
prot_group_type);
|
|
return 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;
|
|
lpfc_cmd->cur_iocbq.iocb_flag |= LPFC_IO_DIF;
|
|
|
|
return 0;
|
|
err:
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
|
|
"9084 Could not setup all needed BDE's"
|
|
"prot_group_type=%d, num_bde=%d\n",
|
|
prot_group_type, num_bde);
|
|
return 1;
|
|
}
|
|
|
|
/**
|
|
* 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_scsi_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_scsi_buf *lpfc_cmd)
|
|
{
|
|
return phba->lpfc_bg_scsi_prep_dma_buf(phba, lpfc_cmd);
|
|
}
|
|
|
|
/**
|
|
* 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.
|
|
* @rsp_iocb: Pointer to response iocb object which reported error.
|
|
*
|
|
* 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_scsi_buf *lpfc_cmd, struct lpfc_iocbq *rsp_iocb) {
|
|
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;
|
|
uint32_t fcpi_parm = rsp_iocb->iocb.un.fcpi.fcpi_parm;
|
|
struct lpfc_fast_path_event *fast_path_evt = NULL;
|
|
struct lpfc_nodelist *pnode = lpfc_cmd->rdata->pnode;
|
|
unsigned long flags;
|
|
|
|
if (!pnode || !NLP_CHK_NODE_ACT(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_scsi_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_handler_fcp_err - FCP response handler
|
|
* @vport: The virtual port for which this call is being executed.
|
|
* @lpfc_cmd: Pointer to lpfc_scsi_buf data structure.
|
|
* @rsp_iocb: The response IOCB which contains FCP error.
|
|
*
|
|
* 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_scsi_buf *lpfc_cmd,
|
|
struct lpfc_iocbq *rsp_iocb)
|
|
{
|
|
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 fcpi_parm = rsp_iocb->iocb.un.fcpi.fcpi_parm;
|
|
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 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_FCP,
|
|
"2719 Invalid response length: "
|
|
"tgt x%x lun x%x 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_FCP,
|
|
"2757 Protocol failure detected during "
|
|
"processing of FCP I/O op: "
|
|
"tgt x%x lun x%x 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;
|
|
|
|
if (!scsi_status && (resp_info & RESID_UNDER) &&
|
|
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);
|
|
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 Read Underrun, expected %d, "
|
|
"residual %d Data: x%x x%x x%x\n",
|
|
be32_to_cpu(fcpcmd->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 ((cmnd->sc_data_direction == DMA_FROM_DEVICE) &&
|
|
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",
|
|
be32_to_cpu(fcpcmd->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 && (cmnd->sc_data_direction == DMA_FROM_DEVICE)) {
|
|
lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP | LOG_FCP_ERROR,
|
|
"9029 FCP Read Check Error Data: "
|
|
"x%x x%x x%x x%x x%x\n",
|
|
be32_to_cpu(fcpcmd->fcpDl),
|
|
be32_to_cpu(fcprsp->rspResId),
|
|
fcpi_parm, cmnd->cmnd[0], scsi_status);
|
|
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 = ScsiResult(host_status, scsi_status);
|
|
lpfc_send_scsi_error_event(vport->phba, vport, lpfc_cmd, rsp_iocb);
|
|
}
|
|
|
|
/**
|
|
* 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_scsi_buf *lpfc_cmd =
|
|
(struct lpfc_scsi_buf *) pIocbIn->context1;
|
|
struct lpfc_vport *vport = pIocbIn->vport;
|
|
struct lpfc_rport_data *rdata = lpfc_cmd->rdata;
|
|
struct lpfc_nodelist *pnode = rdata->pnode;
|
|
struct scsi_cmnd *cmd;
|
|
int result;
|
|
struct scsi_device *tmp_sdev;
|
|
int depth;
|
|
unsigned long flags;
|
|
struct lpfc_fast_path_event *fast_path_evt;
|
|
struct Scsi_Host *shost;
|
|
uint32_t queue_depth, scsi_id;
|
|
uint32_t logit = LOG_FCP;
|
|
|
|
/* Sanity check on return of outstanding command */
|
|
if (!(lpfc_cmd->pCmd))
|
|
return;
|
|
cmd = lpfc_cmd->pCmd;
|
|
shost = cmd->device->host;
|
|
|
|
lpfc_cmd->result = pIocbOut->iocb.un.ulpWord[4];
|
|
lpfc_cmd->status = pIocbOut->iocb.ulpStatus;
|
|
/* pick up SLI4 exhange busy status from HBA */
|
|
lpfc_cmd->exch_busy = pIocbOut->iocb_flag & LPFC_EXCHANGE_BUSY;
|
|
|
|
#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 (pnode && NLP_CHK_NODE_ACT(pnode))
|
|
atomic_dec(&pnode->cmd_pending);
|
|
|
|
if (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)
|
|
&& !(phba->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/%d> "
|
|
"status: x%x result: 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,
|
|
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);
|
|
break;
|
|
case IOSTAT_NPORT_BSY:
|
|
case IOSTAT_FABRIC_BSY:
|
|
cmd->result = ScsiResult(DID_TRANSPORT_DISRUPTED, 0);
|
|
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 && NLP_CHK_NODE_ACT(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 = ScsiResult(DID_NO_CONNECT, 0);
|
|
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 = ScsiResult(DID_REQUEUE, 0);
|
|
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 && NLP_CHK_NODE_ACT(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_xritag,
|
|
0, 0);
|
|
}
|
|
/* else: fall through */
|
|
default:
|
|
cmd->result = ScsiResult(DID_ERROR, 0);
|
|
break;
|
|
}
|
|
|
|
if (!pnode || !NLP_CHK_NODE_ACT(pnode)
|
|
|| (pnode->nlp_state != NLP_STE_MAPPED_NODE))
|
|
cmd->result = ScsiResult(DID_TRANSPORT_DISRUPTED,
|
|
SAM_STAT_BUSY);
|
|
} else
|
|
cmd->result = ScsiResult(DID_OK, 0);
|
|
|
|
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/%d> cmd %p, 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));
|
|
}
|
|
|
|
lpfc_update_stats(phba, lpfc_cmd);
|
|
result = cmd->result;
|
|
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 && NLP_CHK_NODE_ACT(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);
|
|
} else if (pnode && NLP_CHK_NODE_ACT(pnode)) {
|
|
if ((pnode->cmd_qdepth < vport->cfg_tgt_queue_depth) &&
|
|
time_after(jiffies, pnode->last_change_time +
|
|
msecs_to_jiffies(LPFC_TGTQ_INTERVAL))) {
|
|
spin_lock_irqsave(shost->host_lock, flags);
|
|
depth = pnode->cmd_qdepth * LPFC_TGTQ_RAMPUP_PCENT
|
|
/ 100;
|
|
depth = depth ? depth : 1;
|
|
pnode->cmd_qdepth += depth;
|
|
if (pnode->cmd_qdepth > vport->cfg_tgt_queue_depth)
|
|
pnode->cmd_qdepth = vport->cfg_tgt_queue_depth;
|
|
pnode->last_change_time = jiffies;
|
|
spin_unlock_irqrestore(shost->host_lock, flags);
|
|
}
|
|
}
|
|
|
|
lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd);
|
|
|
|
/* The sdev is not guaranteed to be valid post scsi_done upcall. */
|
|
queue_depth = cmd->device->queue_depth;
|
|
scsi_id = cmd->device->id;
|
|
cmd->scsi_done(cmd);
|
|
|
|
if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
|
|
/*
|
|
* If there is a thread waiting for command completion
|
|
* wake up the thread.
|
|
*/
|
|
spin_lock_irqsave(shost->host_lock, flags);
|
|
lpfc_cmd->pCmd = NULL;
|
|
if (lpfc_cmd->waitq)
|
|
wake_up(lpfc_cmd->waitq);
|
|
spin_unlock_irqrestore(shost->host_lock, flags);
|
|
lpfc_release_scsi_buf(phba, lpfc_cmd);
|
|
return;
|
|
}
|
|
|
|
if (!result)
|
|
lpfc_rampup_queue_depth(vport, queue_depth);
|
|
|
|
/*
|
|
* Check for queue full. If the lun is reporting queue full, then
|
|
* back off the lun queue depth to prevent target overloads.
|
|
*/
|
|
if (result == SAM_STAT_TASK_SET_FULL && pnode &&
|
|
NLP_CHK_NODE_ACT(pnode)) {
|
|
shost_for_each_device(tmp_sdev, shost) {
|
|
if (tmp_sdev->id != scsi_id)
|
|
continue;
|
|
depth = scsi_track_queue_full(tmp_sdev,
|
|
tmp_sdev->queue_depth-1);
|
|
if (depth <= 0)
|
|
continue;
|
|
lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
|
|
"0711 detected queue full - lun queue "
|
|
"depth adjusted to %d.\n", depth);
|
|
lpfc_send_sdev_queuedepth_change_event(phba, vport,
|
|
pnode,
|
|
tmp_sdev->lun,
|
|
depth+1, depth);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If there is a thread waiting for command completion
|
|
* wake up the thread.
|
|
*/
|
|
spin_lock_irqsave(shost->host_lock, flags);
|
|
lpfc_cmd->pCmd = NULL;
|
|
if (lpfc_cmd->waitq)
|
|
wake_up(lpfc_cmd->waitq);
|
|
spin_unlock_irqrestore(shost->host_lock, flags);
|
|
|
|
lpfc_release_scsi_buf(phba, lpfc_cmd);
|
|
}
|
|
|
|
/**
|
|
* 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(uint8_t *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_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 void
|
|
lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd,
|
|
struct lpfc_nodelist *pnode)
|
|
{
|
|
struct lpfc_hba *phba = vport->phba;
|
|
struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
|
|
struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
|
|
IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
|
|
struct lpfc_iocbq *piocbq = &(lpfc_cmd->cur_iocbq);
|
|
int datadir = scsi_cmnd->sc_data_direction;
|
|
char tag[2];
|
|
|
|
if (!pnode || !NLP_CHK_NODE_ACT(pnode))
|
|
return;
|
|
|
|
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);
|
|
|
|
memset(&fcp_cmnd->fcpCdb[0], 0, LPFC_FCP_CDB_LEN);
|
|
memcpy(&fcp_cmnd->fcpCdb[0], scsi_cmnd->cmnd, scsi_cmnd->cmd_len);
|
|
if (scsi_populate_tag_msg(scsi_cmnd, tag)) {
|
|
switch (tag[0]) {
|
|
case HEAD_OF_QUEUE_TAG:
|
|
fcp_cmnd->fcpCntl1 = HEAD_OF_Q;
|
|
break;
|
|
case ORDERED_QUEUE_TAG:
|
|
fcp_cmnd->fcpCntl1 = ORDERED_Q;
|
|
break;
|
|
default:
|
|
fcp_cmnd->fcpCntl1 = SIMPLE_Q;
|
|
break;
|
|
}
|
|
} else
|
|
fcp_cmnd->fcpCntl1 = 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;
|
|
if (phba->sli_rev < LPFC_SLI_REV4) {
|
|
iocb_cmd->un.fcpi.fcpi_parm = 0;
|
|
iocb_cmd->ulpPU = 0;
|
|
} else
|
|
iocb_cmd->ulpPU = PARM_READ_CHECK;
|
|
fcp_cmnd->fcpCntl3 = WRITE_DATA;
|
|
phba->fc4OutputRequests++;
|
|
} else {
|
|
iocb_cmd->ulpCommand = CMD_FCP_IREAD64_CR;
|
|
iocb_cmd->ulpPU = PARM_READ_CHECK;
|
|
fcp_cmnd->fcpCntl3 = READ_DATA;
|
|
phba->fc4InputRequests++;
|
|
}
|
|
} else {
|
|
iocb_cmd->ulpCommand = CMD_FCP_ICMND64_CR;
|
|
iocb_cmd->un.fcpi.fcpi_parm = 0;
|
|
iocb_cmd->ulpPU = 0;
|
|
fcp_cmnd->fcpCntl3 = 0;
|
|
phba->fc4ControlRequests++;
|
|
}
|
|
if (phba->sli_rev == 3 &&
|
|
!(phba->sli3_options & LPFC_SLI3_BG_ENABLED))
|
|
lpfc_fcpcmd_to_iocb(iocb_cmd->unsli3.fcp_ext.icd, fcp_cmnd);
|
|
/*
|
|
* Finish initializing those IOCB fields that are independent
|
|
* of the scsi_cmnd request_buffer
|
|
*/
|
|
piocbq->iocb.ulpContext = pnode->nlp_rpi;
|
|
if (phba->sli_rev == LPFC_SLI_REV4)
|
|
piocbq->iocb.ulpContext =
|
|
phba->sli4_hba.rpi_ids[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->context1 = lpfc_cmd;
|
|
piocbq->iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl;
|
|
piocbq->iocb.ulpTimeout = lpfc_cmd->timeout;
|
|
piocbq->vport = vport;
|
|
}
|
|
|
|
/**
|
|
* lpfc_scsi_prep_task_mgmt_cmd - 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_scsi_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(struct lpfc_vport *vport,
|
|
struct lpfc_scsi_buf *lpfc_cmd,
|
|
unsigned int lun,
|
|
uint8_t 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 || !NLP_CHK_NODE_ACT(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->sli_rev == 3 &&
|
|
!(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;
|
|
if (vport->phba->sli_rev == LPFC_SLI_REV4) {
|
|
piocb->ulpContext =
|
|
vport->phba->sli4_hba.rpi_ids[ndlp->nlp_rpi];
|
|
}
|
|
if (ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) {
|
|
piocb->ulpFCP2Rcvy = 1;
|
|
}
|
|
piocb->ulpClass = (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.
|
|
*/
|
|
piocb->ulpTimeout = 0;
|
|
} else
|
|
piocb->ulpTimeout = lpfc_cmd->timeout;
|
|
|
|
if (vport->phba->sli_rev == LPFC_SLI_REV4)
|
|
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;
|
|
phba->lpfc_scsi_prep_cmnd = lpfc_scsi_prep_cmnd;
|
|
|
|
switch (dev_grp) {
|
|
case LPFC_PCI_DEV_LP:
|
|
phba->lpfc_new_scsi_buf = lpfc_new_scsi_buf_s3;
|
|
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;
|
|
break;
|
|
case LPFC_PCI_DEV_OC:
|
|
phba->lpfc_new_scsi_buf = lpfc_new_scsi_buf_s4;
|
|
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;
|
|
break;
|
|
default:
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
|
|
"1418 Invalid HBA PCI-device group: 0x%x\n",
|
|
dev_grp);
|
|
return -ENODEV;
|
|
break;
|
|
}
|
|
phba->lpfc_rampdown_queue_depth = lpfc_rampdown_queue_depth;
|
|
phba->lpfc_scsi_cmd_iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* lpfc_taskmgmt_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_scsi_buf *lpfc_cmd =
|
|
(struct lpfc_scsi_buf *) cmdiocbq->context1;
|
|
if (lpfc_cmd)
|
|
lpfc_release_scsi_buf(phba, lpfc_cmd);
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* 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 len;
|
|
static char lpfcinfobuf[384];
|
|
|
|
memset(lpfcinfobuf,0,384);
|
|
if (phba && phba->pcidev){
|
|
strncpy(lpfcinfobuf, phba->ModelDesc, 256);
|
|
len = strlen(lpfcinfobuf);
|
|
snprintf(lpfcinfobuf + len,
|
|
384-len,
|
|
" on PCI bus %02x device %02x irq %d",
|
|
phba->pcidev->bus->number,
|
|
phba->pcidev->devfn,
|
|
phba->pcidev->irq);
|
|
len = strlen(lpfcinfobuf);
|
|
if (phba->Port[0]) {
|
|
snprintf(lpfcinfobuf + len,
|
|
384-len,
|
|
" port %s",
|
|
phba->Port);
|
|
}
|
|
len = strlen(lpfcinfobuf);
|
|
if (phba->sli4_hba.link_state.logical_speed) {
|
|
snprintf(lpfcinfobuf + len,
|
|
384-len,
|
|
" Logical Link Speed: %d Mbps",
|
|
phba->sli4_hba.link_state.logical_speed * 10);
|
|
}
|
|
}
|
|
return lpfcinfobuf;
|
|
}
|
|
|
|
/**
|
|
* lpfc_poll_rearm_time - 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 (phba->sli.ring[LPFC_FCP_RING].txcmplq_cnt)
|
|
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
|
|
* @ptr: Map to lpfc_hba data structure pointer.
|
|
*
|
|
* This routine restarts fcp_poll timer, when FCP ring polling is enable
|
|
* and FCP Ring interrupt is disable.
|
|
**/
|
|
|
|
void lpfc_poll_timeout(unsigned long ptr)
|
|
{
|
|
struct lpfc_hba *phba = (struct lpfc_hba *) ptr;
|
|
|
|
if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
|
|
lpfc_sli_handle_fast_ring_event(phba,
|
|
&phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ);
|
|
|
|
if (phba->cfg_poll & DISABLE_FCP_RING_INT)
|
|
lpfc_poll_rearm_timer(phba);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* lpfc_queuecommand - scsi_host_template queuecommand entry point
|
|
* @cmnd: Pointer to scsi_cmnd data structure.
|
|
* @done: Pointer to done routine.
|
|
*
|
|
* 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_lck(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
|
|
{
|
|
struct Scsi_Host *shost = cmnd->device->host;
|
|
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
|
|
struct lpfc_hba *phba = vport->phba;
|
|
struct lpfc_rport_data *rdata = cmnd->device->hostdata;
|
|
struct lpfc_nodelist *ndlp;
|
|
struct lpfc_scsi_buf *lpfc_cmd;
|
|
struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
|
|
int err;
|
|
|
|
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_BG,
|
|
"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 || !NLP_CHK_NODE_ACT(ndlp)) {
|
|
cmnd->result = ScsiResult(DID_IMM_RETRY, 0);
|
|
goto out_fail_command;
|
|
}
|
|
if (atomic_read(&ndlp->cmd_pending) >= ndlp->cmd_qdepth)
|
|
goto out_tgt_busy;
|
|
|
|
lpfc_cmd = lpfc_get_scsi_buf(phba, ndlp);
|
|
if (lpfc_cmd == NULL) {
|
|
lpfc_rampdown_queue_depth(phba);
|
|
|
|
lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
|
|
"0707 driver's buffer pool is empty, "
|
|
"IO busied\n");
|
|
goto out_host_busy;
|
|
}
|
|
|
|
/*
|
|
* 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->timeout = 0;
|
|
lpfc_cmd->start_time = jiffies;
|
|
cmnd->host_scribble = (unsigned char *)lpfc_cmd;
|
|
cmnd->scsi_done = done;
|
|
|
|
if (scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) {
|
|
if (vport->phba->cfg_enable_bg) {
|
|
lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG,
|
|
"9033 BLKGRD: rcvd protected cmd:%02x op=%s "
|
|
"guard=%s\n", cmnd->cmnd[0],
|
|
dif_op_str[scsi_get_prot_op(cmnd)],
|
|
dif_grd_str[scsi_host_get_guard(shost)]);
|
|
if (cmnd->cmnd[0] == READ_10)
|
|
lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG,
|
|
"9035 BLKGRD: READ @ sector %llu, "
|
|
"cnt %u, rpt %d\n",
|
|
(unsigned long long)scsi_get_lba(cmnd),
|
|
blk_rq_sectors(cmnd->request),
|
|
(cmnd->cmnd[1]>>5));
|
|
else if (cmnd->cmnd[0] == WRITE_10)
|
|
lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG,
|
|
"9036 BLKGRD: WRITE @ sector %llu, "
|
|
"cnt %u, wpt %d\n",
|
|
(unsigned long long)scsi_get_lba(cmnd),
|
|
blk_rq_sectors(cmnd->request),
|
|
(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_WARNING, LOG_BG,
|
|
"9038 BLKGRD: rcvd unprotected cmd:"
|
|
"%02x op=%s guard=%s\n", cmnd->cmnd[0],
|
|
dif_op_str[scsi_get_prot_op(cmnd)],
|
|
dif_grd_str[scsi_host_get_guard(shost)]);
|
|
if (cmnd->cmnd[0] == READ_10)
|
|
lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG,
|
|
"9040 dbg: READ @ sector %llu, "
|
|
"cnt %u, rpt %d\n",
|
|
(unsigned long long)scsi_get_lba(cmnd),
|
|
blk_rq_sectors(cmnd->request),
|
|
(cmnd->cmnd[1]>>5));
|
|
else if (cmnd->cmnd[0] == WRITE_10)
|
|
lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG,
|
|
"9041 dbg: WRITE @ sector %llu, "
|
|
"cnt %u, wpt %d\n",
|
|
(unsigned long long)scsi_get_lba(cmnd),
|
|
blk_rq_sectors(cmnd->request),
|
|
(cmnd->cmnd[1]>>5));
|
|
}
|
|
err = lpfc_scsi_prep_dma_buf(phba, lpfc_cmd);
|
|
}
|
|
|
|
if (err)
|
|
goto out_host_busy_free_buf;
|
|
|
|
lpfc_scsi_prep_cmnd(vport, lpfc_cmd, ndlp);
|
|
|
|
atomic_inc(&ndlp->cmd_pending);
|
|
err = lpfc_sli_issue_iocb(phba, LPFC_FCP_RING,
|
|
&lpfc_cmd->cur_iocbq, SLI_IOCB_RET_IOCB);
|
|
if (err) {
|
|
atomic_dec(&ndlp->cmd_pending);
|
|
goto out_host_busy_free_buf;
|
|
}
|
|
if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
|
|
spin_unlock(shost->host_lock);
|
|
lpfc_sli_handle_fast_ring_event(phba,
|
|
&phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ);
|
|
|
|
spin_lock(shost->host_lock);
|
|
if (phba->cfg_poll & DISABLE_FCP_RING_INT)
|
|
lpfc_poll_rearm_timer(phba);
|
|
}
|
|
|
|
return 0;
|
|
|
|
out_host_busy_free_buf:
|
|
lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd);
|
|
lpfc_release_scsi_buf(phba, lpfc_cmd);
|
|
out_host_busy:
|
|
return SCSI_MLQUEUE_HOST_BUSY;
|
|
|
|
out_tgt_busy:
|
|
return SCSI_MLQUEUE_TARGET_BUSY;
|
|
|
|
out_fail_command:
|
|
done(cmnd);
|
|
return 0;
|
|
}
|
|
|
|
static DEF_SCSI_QCMD(lpfc_queuecommand)
|
|
|
|
/**
|
|
* 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 lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
|
|
struct lpfc_hba *phba = vport->phba;
|
|
struct lpfc_iocbq *iocb;
|
|
struct lpfc_iocbq *abtsiocb;
|
|
struct lpfc_scsi_buf *lpfc_cmd;
|
|
IOCB_t *cmd, *icmd;
|
|
int ret = SUCCESS;
|
|
DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waitq);
|
|
|
|
ret = fc_block_scsi_eh(cmnd);
|
|
if (ret)
|
|
return ret;
|
|
lpfc_cmd = (struct lpfc_scsi_buf *)cmnd->host_scribble;
|
|
if (!lpfc_cmd) {
|
|
lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
|
|
"2873 SCSI Layer I/O Abort Request IO CMPL Status "
|
|
"x%x ID %d LUN %d\n",
|
|
ret, cmnd->device->id, cmnd->device->lun);
|
|
return SUCCESS;
|
|
}
|
|
|
|
/*
|
|
* If pCmd field of the corresponding lpfc_scsi_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.
|
|
*/
|
|
iocb = &lpfc_cmd->cur_iocbq;
|
|
if (lpfc_cmd->pCmd != cmnd)
|
|
goto out;
|
|
|
|
BUG_ON(iocb->context1 != lpfc_cmd);
|
|
|
|
abtsiocb = lpfc_sli_get_iocbq(phba);
|
|
if (abtsiocb == NULL) {
|
|
ret = FAILED;
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* The scsi command can not be in txq and it is in flight because the
|
|
* pCmd is still pointig at the SCSI command we have to abort. There
|
|
* is no need to search the txcmplq. Just send an abort to the FW.
|
|
*/
|
|
|
|
cmd = &iocb->iocb;
|
|
icmd = &abtsiocb->iocb;
|
|
icmd->un.acxri.abortType = ABORT_TYPE_ABTS;
|
|
icmd->un.acxri.abortContextTag = cmd->ulpContext;
|
|
if (phba->sli_rev == LPFC_SLI_REV4)
|
|
icmd->un.acxri.abortIoTag = iocb->sli4_xritag;
|
|
else
|
|
icmd->un.acxri.abortIoTag = cmd->ulpIoTag;
|
|
|
|
icmd->ulpLe = 1;
|
|
icmd->ulpClass = cmd->ulpClass;
|
|
|
|
/* ABTS WQE must go to the same WQ as the WQE to be aborted */
|
|
abtsiocb->fcp_wqidx = iocb->fcp_wqidx;
|
|
abtsiocb->iocb_flag |= LPFC_USE_FCPWQIDX;
|
|
|
|
if (lpfc_is_link_up(phba))
|
|
icmd->ulpCommand = CMD_ABORT_XRI_CN;
|
|
else
|
|
icmd->ulpCommand = CMD_CLOSE_XRI_CN;
|
|
|
|
abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl;
|
|
abtsiocb->vport = vport;
|
|
if (lpfc_sli_issue_iocb(phba, LPFC_FCP_RING, abtsiocb, 0) ==
|
|
IOCB_ERROR) {
|
|
lpfc_sli_release_iocbq(phba, abtsiocb);
|
|
ret = FAILED;
|
|
goto out;
|
|
}
|
|
|
|
if (phba->cfg_poll & DISABLE_FCP_RING_INT)
|
|
lpfc_sli_handle_fast_ring_event(phba,
|
|
&phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ);
|
|
|
|
lpfc_cmd->waitq = &waitq;
|
|
/* Wait for abort to complete */
|
|
wait_event_timeout(waitq,
|
|
(lpfc_cmd->pCmd != cmnd),
|
|
(2*vport->cfg_devloss_tmo*HZ));
|
|
|
|
spin_lock_irq(shost->host_lock);
|
|
lpfc_cmd->waitq = NULL;
|
|
spin_unlock_irq(shost->host_lock);
|
|
|
|
if (lpfc_cmd->pCmd == cmnd) {
|
|
ret = FAILED;
|
|
lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
|
|
"0748 abort handler timed out waiting "
|
|
"for abort to complete: ret %#x, ID %d, "
|
|
"LUN %d\n",
|
|
ret, cmnd->device->id, cmnd->device->lun);
|
|
}
|
|
|
|
out:
|
|
lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
|
|
"0749 SCSI Layer I/O Abort Request Status x%x ID %d "
|
|
"LUN %d\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_send_taskmgmt - Generic SCSI Task Mgmt Handler
|
|
* @vport: The virtual port for which this call is being executed.
|
|
* @rdata: Pointer to remote port local data
|
|
* @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 lpfc_rport_data *rdata,
|
|
unsigned tgt_id, unsigned int lun_id,
|
|
uint8_t task_mgmt_cmd)
|
|
{
|
|
struct lpfc_hba *phba = vport->phba;
|
|
struct lpfc_scsi_buf *lpfc_cmd;
|
|
struct lpfc_iocbq *iocbq;
|
|
struct lpfc_iocbq *iocbqrsp;
|
|
struct lpfc_nodelist *pnode = rdata->pnode;
|
|
int ret;
|
|
int status;
|
|
|
|
if (!pnode || !NLP_CHK_NODE_ACT(pnode))
|
|
return FAILED;
|
|
|
|
lpfc_cmd = lpfc_get_scsi_buf(phba, rdata->pnode);
|
|
if (lpfc_cmd == NULL)
|
|
return FAILED;
|
|
lpfc_cmd->timeout = 60;
|
|
lpfc_cmd->rdata = rdata;
|
|
|
|
status = 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;
|
|
}
|
|
|
|
lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
|
|
"0702 Issue %s to TGT %d LUN %d "
|
|
"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->iocb_flag);
|
|
|
|
status = lpfc_sli_issue_iocb_wait(phba, LPFC_FCP_RING,
|
|
iocbq, iocbqrsp, lpfc_cmd->timeout);
|
|
if (status != IOCB_SUCCESS) {
|
|
if (status == IOCB_TIMEDOUT) {
|
|
iocbq->iocb_cmpl = lpfc_tskmgmt_def_cmpl;
|
|
ret = TIMEOUT_ERROR;
|
|
} else
|
|
ret = FAILED;
|
|
lpfc_cmd->status = IOSTAT_DRIVER_REJECT;
|
|
lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
|
|
"0727 TMF %s to TGT %d LUN %d failed (%d, %d) "
|
|
"iocb_flag x%x\n",
|
|
lpfc_taskmgmt_name(task_mgmt_cmd),
|
|
tgt_id, lun_id, iocbqrsp->iocb.ulpStatus,
|
|
iocbqrsp->iocb.un.ulpWord[4],
|
|
iocbq->iocb_flag);
|
|
} else if (status == IOCB_BUSY)
|
|
ret = FAILED;
|
|
else
|
|
ret = SUCCESS;
|
|
|
|
lpfc_sli_release_iocbq(phba, iocbqrsp);
|
|
|
|
if (ret != TIMEOUT_ERROR)
|
|
lpfc_release_scsi_buf(phba, lpfc_cmd);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* lpfc_chk_tgt_mapped -
|
|
* @vport: The virtual port to check on
|
|
* @cmnd: Pointer to scsi_cmnd 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 scsi_cmnd *cmnd)
|
|
{
|
|
struct lpfc_rport_data *rdata = cmnd->device->hostdata;
|
|
struct lpfc_nodelist *pnode;
|
|
unsigned long later;
|
|
|
|
if (!rdata) {
|
|
lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
|
|
"0797 Tgt Map rport failure: rdata x%p\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 || !NLP_CHK_NODE_ACT(pnode))
|
|
return FAILED;
|
|
if (pnode->nlp_state == NLP_STE_MAPPED_NODE)
|
|
return SUCCESS;
|
|
schedule_timeout_uninterruptible(msecs_to_jiffies(500));
|
|
rdata = cmnd->device->hostdata;
|
|
if (!rdata)
|
|
return FAILED;
|
|
pnode = rdata->pnode;
|
|
}
|
|
if (!pnode || !NLP_CHK_NODE_ACT(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_iocb(vport, &phba->sli.ring[phba->sli.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_FCP,
|
|
"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 lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
|
|
struct lpfc_rport_data *rdata = cmnd->device->hostdata;
|
|
struct lpfc_nodelist *pnode;
|
|
unsigned tgt_id = cmnd->device->id;
|
|
unsigned int lun_id = cmnd->device->lun;
|
|
struct lpfc_scsi_event_header scsi_event;
|
|
int status;
|
|
|
|
if (!rdata) {
|
|
lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
|
|
"0798 Device Reset rport failure: rdata x%p\n", rdata);
|
|
return FAILED;
|
|
}
|
|
pnode = rdata->pnode;
|
|
status = fc_block_scsi_eh(cmnd);
|
|
if (status)
|
|
return status;
|
|
|
|
status = lpfc_chk_tgt_mapped(vport, cmnd);
|
|
if (status == FAILED) {
|
|
lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
|
|
"0721 Device Reset rport failure: rdata x%p\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, rdata, tgt_id, lun_id,
|
|
FCP_LUN_RESET);
|
|
|
|
lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
|
|
"0713 SCSI layer issued Device Reset (%d, %d) "
|
|
"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.
|
|
*/
|
|
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 lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
|
|
struct lpfc_rport_data *rdata = cmnd->device->hostdata;
|
|
struct lpfc_nodelist *pnode;
|
|
unsigned tgt_id = cmnd->device->id;
|
|
unsigned int lun_id = cmnd->device->lun;
|
|
struct lpfc_scsi_event_header scsi_event;
|
|
int status;
|
|
|
|
if (!rdata) {
|
|
lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
|
|
"0799 Target Reset rport failure: rdata x%p\n", rdata);
|
|
return FAILED;
|
|
}
|
|
pnode = rdata->pnode;
|
|
status = fc_block_scsi_eh(cmnd);
|
|
if (status)
|
|
return status;
|
|
|
|
status = lpfc_chk_tgt_mapped(vport, cmnd);
|
|
if (status == FAILED) {
|
|
lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
|
|
"0722 Target Reset rport failure: rdata x%p\n", rdata);
|
|
return FAILED;
|
|
}
|
|
|
|
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, rdata, tgt_id, lun_id,
|
|
FCP_TARGET_RESET);
|
|
|
|
lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
|
|
"0723 SCSI layer issued Target Reset (%d, %d) "
|
|
"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.
|
|
*/
|
|
status = lpfc_reset_flush_io_context(vport, tgt_id, lun_id,
|
|
LPFC_CTX_TGT);
|
|
return status;
|
|
}
|
|
|
|
/**
|
|
* lpfc_bus_reset_handler - scsi_host_template eh_bus_reset_handler entry point
|
|
* @cmnd: Pointer to scsi_cmnd data structure.
|
|
*
|
|
* This routine does target reset to all targets on @cmnd->device->host.
|
|
* This emulates Parallel SCSI Bus Reset Semantics.
|
|
*
|
|
* Return code :
|
|
* 0x2003 - Error
|
|
* 0x2002 - Success
|
|
**/
|
|
static int
|
|
lpfc_bus_reset_handler(struct scsi_cmnd *cmnd)
|
|
{
|
|
struct Scsi_Host *shost = cmnd->device->host;
|
|
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
|
|
struct lpfc_nodelist *ndlp = NULL;
|
|
struct lpfc_scsi_event_header scsi_event;
|
|
int match;
|
|
int ret = SUCCESS, status, i;
|
|
|
|
scsi_event.event_type = FC_REG_SCSI_EVENT;
|
|
scsi_event.subcategory = LPFC_EVENT_BUSRESET;
|
|
scsi_event.lun = 0;
|
|
memcpy(scsi_event.wwpn, &vport->fc_portname, sizeof(struct lpfc_name));
|
|
memcpy(scsi_event.wwnn, &vport->fc_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 = fc_block_scsi_eh(cmnd);
|
|
if (status)
|
|
return status;
|
|
|
|
/*
|
|
* Since the driver manages a single bus device, reset all
|
|
* targets known to the driver. Should any target reset
|
|
* fail, this routine returns failure to the midlayer.
|
|
*/
|
|
for (i = 0; i < LPFC_MAX_TARGET; i++) {
|
|
/* Search for mapped node by target ID */
|
|
match = 0;
|
|
spin_lock_irq(shost->host_lock);
|
|
list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
|
|
if (!NLP_CHK_NODE_ACT(ndlp))
|
|
continue;
|
|
if (ndlp->nlp_state == NLP_STE_MAPPED_NODE &&
|
|
ndlp->nlp_sid == i &&
|
|
ndlp->rport) {
|
|
match = 1;
|
|
break;
|
|
}
|
|
}
|
|
spin_unlock_irq(shost->host_lock);
|
|
if (!match)
|
|
continue;
|
|
|
|
status = lpfc_send_taskmgmt(vport, ndlp->rport->dd_data,
|
|
i, 0, FCP_TARGET_RESET);
|
|
|
|
if (status != SUCCESS) {
|
|
lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
|
|
"0700 Bus Reset on target %d failed\n",
|
|
i);
|
|
ret = FAILED;
|
|
}
|
|
}
|
|
/*
|
|
* We have to clean up i/o as : they may be orphaned by the TMFs
|
|
* above; or if any of the TMFs failed, they may be in an
|
|
* indeterminate state.
|
|
* We will report success if all the i/o aborts successfully.
|
|
*/
|
|
|
|
status = lpfc_reset_flush_io_context(vport, 0, 0, LPFC_CTX_HOST);
|
|
if (status != SUCCESS)
|
|
ret = FAILED;
|
|
|
|
lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
|
|
"0714 SCSI layer issued Bus Reset Data: x%x\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
|
|
if (!rport || fc_remote_port_chkready(rport))
|
|
return -ENXIO;
|
|
|
|
sdev->hostdata = rport->dd_data;
|
|
sdev_cnt = atomic_inc_return(&phba->sdev_cnt);
|
|
|
|
/*
|
|
* 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(vport, num_to_alloc);
|
|
if (num_to_alloc != num_allocated) {
|
|
lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
|
|
"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;
|
|
|
|
if (sdev->tagged_supported)
|
|
scsi_activate_tcq(sdev, vport->cfg_lun_queue_depth);
|
|
else
|
|
scsi_deactivate_tcq(sdev, vport->cfg_lun_queue_depth);
|
|
|
|
if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
|
|
lpfc_sli_handle_fast_ring_event(phba,
|
|
&phba->sli.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;
|
|
atomic_dec(&phba->sdev_cnt);
|
|
sdev->hostdata = NULL;
|
|
return;
|
|
}
|
|
|
|
|
|
struct scsi_host_template lpfc_template = {
|
|
.module = THIS_MODULE,
|
|
.name = LPFC_DRIVER_NAME,
|
|
.info = lpfc_info,
|
|
.queuecommand = lpfc_queuecommand,
|
|
.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 = lpfc_bus_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,
|
|
.use_clustering = ENABLE_CLUSTERING,
|
|
.shost_attrs = lpfc_hba_attrs,
|
|
.max_sectors = 0xFFFF,
|
|
.vendor_id = LPFC_NL_VENDOR_ID,
|
|
.change_queue_depth = lpfc_change_queue_depth,
|
|
};
|
|
|
|
struct scsi_host_template lpfc_vport_template = {
|
|
.module = THIS_MODULE,
|
|
.name = LPFC_DRIVER_NAME,
|
|
.info = lpfc_info,
|
|
.queuecommand = lpfc_queuecommand,
|
|
.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 = lpfc_bus_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,
|
|
.use_clustering = ENABLE_CLUSTERING,
|
|
.shost_attrs = lpfc_vport_attrs,
|
|
.max_sectors = 0xFFFF,
|
|
.change_queue_depth = lpfc_change_queue_depth,
|
|
};
|