c44ce17374
Update copyright notice text and include year 2005. Add Copyright notice for Christoph Hellwig to several files: lpfc.h lpfc_attr.c lpfc_els.c lpfc_hbadisc.c lpfc_init.c lpfc_mbox.c lpfc_mem.c lpfc_nportdisc.c lpfc_scsi.c lpfc_sli.c Signed-off-by: James Smart <James.Smart@emulex.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
1276 lines
36 KiB
C
1276 lines
36 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) 2004-2005 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/interrupt.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_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_hw.h"
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#include "lpfc_sli.h"
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#include "lpfc_disc.h"
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#include "lpfc_scsi.h"
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#include "lpfc.h"
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#include "lpfc_logmsg.h"
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#include "lpfc_crtn.h"
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#define LPFC_RESET_WAIT 2
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#define LPFC_ABORT_WAIT 2
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static inline void lpfc_put_lun(struct fcp_cmnd *fcmd, unsigned int lun)
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{
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fcmd->fcpLunLsl = 0;
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fcmd->fcpLunMsl = swab16((uint16_t)lun);
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}
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/*
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* This routine allocates a scsi buffer, which contains all the necessary
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* information needed to initiate a SCSI I/O. The non-DMAable buffer region
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* contains information to build the IOCB. The DMAable region contains
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* memory for the FCP CMND, FCP RSP, and the inital BPL. In addition to
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* allocating memeory, the FCP CMND and FCP RSP BDEs are setup in the BPL
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* and the BPL BDE is setup in the IOCB.
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*/
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static struct lpfc_scsi_buf *
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lpfc_get_scsi_buf(struct lpfc_hba * phba)
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{
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struct lpfc_scsi_buf *psb;
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struct ulp_bde64 *bpl;
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IOCB_t *iocb;
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dma_addr_t pdma_phys;
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psb = kmalloc(sizeof(struct lpfc_scsi_buf), GFP_KERNEL);
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if (!psb)
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return NULL;
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memset(psb, 0, sizeof (struct lpfc_scsi_buf));
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psb->scsi_hba = phba;
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/*
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* Get memory from the pci pool to map the virt space to pci bus space
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* for an I/O. The DMA buffer includes space for the struct fcp_cmnd,
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* struct fcp_rsp and the number of bde's necessary to support the
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* sg_tablesize.
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*/
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psb->data = pci_pool_alloc(phba->lpfc_scsi_dma_buf_pool, GFP_KERNEL,
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&psb->dma_handle);
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if (!psb->data) {
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kfree(psb);
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return NULL;
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}
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/* Initialize virtual ptrs to dma_buf region. */
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memset(psb->data, 0, phba->cfg_sg_dma_buf_size);
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psb->fcp_cmnd = psb->data;
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psb->fcp_rsp = psb->data + sizeof(struct fcp_cmnd);
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psb->fcp_bpl = psb->data + sizeof(struct fcp_cmnd) +
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sizeof(struct fcp_rsp);
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/* Initialize local short-hand pointers. */
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bpl = psb->fcp_bpl;
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pdma_phys = psb->dma_handle;
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/*
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* The first two bdes are the FCP_CMD and FCP_RSP. The balance are sg
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* list bdes. Initialize the first two and leave the rest for
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* queuecommand.
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*/
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bpl->addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys));
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bpl->addrLow = le32_to_cpu(putPaddrLow(pdma_phys));
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bpl->tus.f.bdeSize = sizeof (struct fcp_cmnd);
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bpl->tus.f.bdeFlags = BUFF_USE_CMND;
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bpl->tus.w = le32_to_cpu(bpl->tus.w);
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bpl++;
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/* Setup the physical region for the FCP RSP */
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pdma_phys += sizeof (struct fcp_cmnd);
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bpl->addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys));
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bpl->addrLow = le32_to_cpu(putPaddrLow(pdma_phys));
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bpl->tus.f.bdeSize = sizeof (struct fcp_rsp);
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bpl->tus.f.bdeFlags = (BUFF_USE_CMND | BUFF_USE_RCV);
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bpl->tus.w = le32_to_cpu(bpl->tus.w);
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/*
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* Since the IOCB for the FCP I/O is built into this lpfc_scsi_buf,
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* initialize it with all known data now.
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*/
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pdma_phys += (sizeof (struct fcp_rsp));
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iocb = &psb->cur_iocbq.iocb;
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iocb->un.fcpi64.bdl.ulpIoTag32 = 0;
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iocb->un.fcpi64.bdl.addrHigh = putPaddrHigh(pdma_phys);
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iocb->un.fcpi64.bdl.addrLow = putPaddrLow(pdma_phys);
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iocb->un.fcpi64.bdl.bdeSize = (2 * sizeof (struct ulp_bde64));
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iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDL;
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iocb->ulpBdeCount = 1;
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iocb->ulpClass = CLASS3;
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return psb;
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}
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static void
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lpfc_free_scsi_buf(struct lpfc_scsi_buf * psb)
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{
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struct lpfc_hba *phba = psb->scsi_hba;
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/*
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* There are only two special cases to consider. (1) the scsi command
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* requested scatter-gather usage or (2) the scsi command allocated
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* a request buffer, but did not request use_sg. There is a third
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* case, but it does not require resource deallocation.
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*/
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if ((psb->seg_cnt > 0) && (psb->pCmd->use_sg)) {
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dma_unmap_sg(&phba->pcidev->dev, psb->pCmd->request_buffer,
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psb->seg_cnt, psb->pCmd->sc_data_direction);
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} else {
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if ((psb->nonsg_phys) && (psb->pCmd->request_bufflen)) {
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dma_unmap_single(&phba->pcidev->dev, psb->nonsg_phys,
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psb->pCmd->request_bufflen,
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psb->pCmd->sc_data_direction);
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}
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}
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list_add_tail(&psb->list, &phba->lpfc_scsi_buf_list);
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}
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static int
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lpfc_scsi_prep_dma_buf(struct lpfc_hba * phba, struct lpfc_scsi_buf * lpfc_cmd)
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{
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struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
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struct scatterlist *sgel = NULL;
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struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
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struct ulp_bde64 *bpl = lpfc_cmd->fcp_bpl;
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IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
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dma_addr_t physaddr;
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uint32_t i, num_bde = 0;
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int datadir = scsi_cmnd->sc_data_direction;
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int dma_error;
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/*
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* There are three possibilities here - use scatter-gather segment, use
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* the single mapping, or neither. Start the lpfc command prep by
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* bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first
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* data bde entry.
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*/
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bpl += 2;
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if (scsi_cmnd->use_sg) {
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/*
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* The driver stores the segment count returned from pci_map_sg
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* because this a count of dma-mappings used to map the use_sg
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* pages. They are not guaranteed to be the same for those
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* architectures that implement an IOMMU.
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*/
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sgel = (struct scatterlist *)scsi_cmnd->request_buffer;
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lpfc_cmd->seg_cnt = dma_map_sg(&phba->pcidev->dev, sgel,
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scsi_cmnd->use_sg, datadir);
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if (lpfc_cmd->seg_cnt == 0)
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return 1;
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if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) {
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printk(KERN_ERR "%s: Too many sg segments from "
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"dma_map_sg. Config %d, seg_cnt %d",
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__FUNCTION__, phba->cfg_sg_seg_cnt,
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lpfc_cmd->seg_cnt);
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dma_unmap_sg(&phba->pcidev->dev, sgel,
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lpfc_cmd->seg_cnt, datadir);
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return 1;
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}
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/*
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* The driver established a maximum scatter-gather segment count
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* during probe that limits the number of sg elements in any
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* single scsi command. Just run through the seg_cnt and format
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* the bde's.
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*/
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for (i = 0; i < lpfc_cmd->seg_cnt; i++) {
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physaddr = sg_dma_address(sgel);
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bpl->addrLow = le32_to_cpu(putPaddrLow(physaddr));
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bpl->addrHigh = le32_to_cpu(putPaddrHigh(physaddr));
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bpl->tus.f.bdeSize = sg_dma_len(sgel);
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if (datadir == DMA_TO_DEVICE)
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bpl->tus.f.bdeFlags = 0;
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else
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bpl->tus.f.bdeFlags = BUFF_USE_RCV;
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bpl->tus.w = le32_to_cpu(bpl->tus.w);
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bpl++;
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sgel++;
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num_bde++;
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}
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} else if (scsi_cmnd->request_buffer && scsi_cmnd->request_bufflen) {
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physaddr = dma_map_single(&phba->pcidev->dev,
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scsi_cmnd->request_buffer,
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scsi_cmnd->request_bufflen,
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datadir);
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dma_error = dma_mapping_error(physaddr);
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if (dma_error) {
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lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
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"%d:0718 Unable to dma_map_single "
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"request_buffer: x%x\n",
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phba->brd_no, dma_error);
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return 1;
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}
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lpfc_cmd->nonsg_phys = physaddr;
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bpl->addrLow = le32_to_cpu(putPaddrLow(physaddr));
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bpl->addrHigh = le32_to_cpu(putPaddrHigh(physaddr));
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bpl->tus.f.bdeSize = scsi_cmnd->request_bufflen;
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if (datadir == DMA_TO_DEVICE)
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bpl->tus.f.bdeFlags = 0;
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bpl->tus.w = le32_to_cpu(bpl->tus.w);
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num_bde = 1;
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bpl++;
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}
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/*
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* Finish initializing those IOCB fields that are dependent on the
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* scsi_cmnd request_buffer
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*/
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iocb_cmd->un.fcpi64.bdl.bdeSize +=
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(num_bde * sizeof (struct ulp_bde64));
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iocb_cmd->ulpBdeCount = 1;
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iocb_cmd->ulpLe = 1;
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fcp_cmnd->fcpDl = be32_to_cpu(scsi_cmnd->request_bufflen);
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return 0;
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}
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static void
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lpfc_handle_fcp_err(struct lpfc_scsi_buf *lpfc_cmd)
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{
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struct scsi_cmnd *cmnd = lpfc_cmd->pCmd;
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struct fcp_cmnd *fcpcmd = lpfc_cmd->fcp_cmnd;
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struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp;
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struct lpfc_hba *phba = lpfc_cmd->scsi_hba;
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uint32_t fcpi_parm = lpfc_cmd->cur_iocbq.iocb.un.fcpi.fcpi_parm;
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uint32_t resp_info = fcprsp->rspStatus2;
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uint32_t scsi_status = fcprsp->rspStatus3;
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uint32_t host_status = DID_OK;
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uint32_t rsplen = 0;
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/*
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* If this is a task management command, there is no
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* scsi packet associated with this lpfc_cmd. The driver
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* consumes it.
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*/
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if (fcpcmd->fcpCntl2) {
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scsi_status = 0;
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goto out;
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}
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lpfc_printf_log(phba, KERN_WARNING, LOG_FCP,
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"%d:0730 FCP command failed: RSP "
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"Data: x%x x%x x%x x%x x%x x%x\n",
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phba->brd_no, resp_info, scsi_status,
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be32_to_cpu(fcprsp->rspResId),
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be32_to_cpu(fcprsp->rspSnsLen),
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be32_to_cpu(fcprsp->rspRspLen),
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fcprsp->rspInfo3);
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if (resp_info & RSP_LEN_VALID) {
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rsplen = be32_to_cpu(fcprsp->rspRspLen);
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if ((rsplen != 0 && rsplen != 4 && rsplen != 8) ||
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(fcprsp->rspInfo3 != RSP_NO_FAILURE)) {
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host_status = DID_ERROR;
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goto out;
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}
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}
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if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen) {
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uint32_t snslen = be32_to_cpu(fcprsp->rspSnsLen);
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if (snslen > SCSI_SENSE_BUFFERSIZE)
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snslen = SCSI_SENSE_BUFFERSIZE;
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memcpy(cmnd->sense_buffer, &fcprsp->rspInfo0 + rsplen, snslen);
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}
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cmnd->resid = 0;
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if (resp_info & RESID_UNDER) {
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cmnd->resid = be32_to_cpu(fcprsp->rspResId);
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lpfc_printf_log(phba, KERN_INFO, LOG_FCP,
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"%d:0716 FCP Read Underrun, expected %d, "
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"residual %d Data: x%x x%x x%x\n", phba->brd_no,
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be32_to_cpu(fcpcmd->fcpDl), cmnd->resid,
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fcpi_parm, cmnd->cmnd[0], cmnd->underflow);
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/*
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* The cmnd->underflow is the minimum number of bytes that must
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* be transfered for this command. Provided a sense condition
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* is not present, make sure the actual amount transferred is at
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* least the underflow value or fail.
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*/
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if (!(resp_info & SNS_LEN_VALID) &&
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(scsi_status == SAM_STAT_GOOD) &&
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(cmnd->request_bufflen - cmnd->resid) < cmnd->underflow) {
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lpfc_printf_log(phba, KERN_INFO, LOG_FCP,
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"%d:0717 FCP command x%x residual "
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"underrun converted to error "
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"Data: x%x x%x x%x\n", phba->brd_no,
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cmnd->cmnd[0], cmnd->request_bufflen,
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cmnd->resid, cmnd->underflow);
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host_status = DID_ERROR;
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}
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} else if (resp_info & RESID_OVER) {
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lpfc_printf_log(phba, KERN_WARNING, LOG_FCP,
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"%d:0720 FCP command x%x residual "
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"overrun error. Data: x%x x%x \n",
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phba->brd_no, cmnd->cmnd[0],
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cmnd->request_bufflen, cmnd->resid);
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host_status = DID_ERROR;
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/*
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* Check SLI validation that all the transfer was actually done
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* (fcpi_parm should be zero). Apply check only to reads.
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*/
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} else if ((scsi_status == SAM_STAT_GOOD) && fcpi_parm &&
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(cmnd->sc_data_direction == DMA_FROM_DEVICE)) {
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lpfc_printf_log(phba, KERN_WARNING, LOG_FCP,
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"%d:0734 FCP Read Check Error Data: "
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"x%x x%x x%x x%x\n", phba->brd_no,
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be32_to_cpu(fcpcmd->fcpDl),
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be32_to_cpu(fcprsp->rspResId),
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fcpi_parm, cmnd->cmnd[0]);
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host_status = DID_ERROR;
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cmnd->resid = cmnd->request_bufflen;
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}
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out:
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cmnd->result = ScsiResult(host_status, scsi_status);
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}
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|
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static void
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lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn,
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struct lpfc_iocbq *pIocbOut)
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{
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struct lpfc_scsi_buf *lpfc_cmd =
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(struct lpfc_scsi_buf *) pIocbIn->context1;
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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 iflag;
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lpfc_cmd->result = pIocbOut->iocb.un.ulpWord[4];
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lpfc_cmd->status = pIocbOut->iocb.ulpStatus;
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if (lpfc_cmd->status) {
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if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT &&
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(lpfc_cmd->result & IOERR_DRVR_MASK))
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lpfc_cmd->status = IOSTAT_DRIVER_REJECT;
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else if (lpfc_cmd->status >= IOSTAT_CNT)
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lpfc_cmd->status = IOSTAT_DEFAULT;
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lpfc_printf_log(phba, KERN_WARNING, LOG_FCP,
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"%d:0729 FCP cmd x%x failed <%d/%d> status: "
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"x%x result: x%x Data: x%x x%x\n",
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phba->brd_no, cmd->cmnd[0], cmd->device->id,
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cmd->device->lun, lpfc_cmd->status,
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lpfc_cmd->result, pIocbOut->iocb.ulpContext,
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lpfc_cmd->cur_iocbq.iocb.ulpIoTag);
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switch (lpfc_cmd->status) {
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case IOSTAT_FCP_RSP_ERROR:
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/* Call FCP RSP handler to determine result */
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lpfc_handle_fcp_err(lpfc_cmd);
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break;
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case IOSTAT_NPORT_BSY:
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case IOSTAT_FABRIC_BSY:
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cmd->result = ScsiResult(DID_BUS_BUSY, 0);
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break;
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default:
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cmd->result = ScsiResult(DID_ERROR, 0);
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break;
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}
|
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|
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if (pnode) {
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if (pnode->nlp_state != NLP_STE_MAPPED_NODE)
|
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cmd->result = ScsiResult(DID_BUS_BUSY,
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SAM_STAT_BUSY);
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}
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else {
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cmd->result = ScsiResult(DID_NO_CONNECT, 0);
|
|
}
|
|
} 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_log(phba, KERN_INFO, LOG_FCP,
|
|
"%d:0710 Iodone <%d/%d> cmd %p, error x%x "
|
|
"SNS x%x x%x Data: x%x x%x\n",
|
|
phba->brd_no, cmd->device->id,
|
|
cmd->device->lun, cmd, cmd->result,
|
|
*lp, *(lp + 3), cmd->retries, cmd->resid);
|
|
}
|
|
|
|
spin_lock_irqsave(phba->host->host_lock, iflag);
|
|
lpfc_free_scsi_buf(lpfc_cmd);
|
|
cmd->host_scribble = NULL;
|
|
spin_unlock_irqrestore(phba->host->host_lock, iflag);
|
|
|
|
cmd->scsi_done(cmd);
|
|
}
|
|
|
|
static void
|
|
lpfc_scsi_prep_cmnd(struct lpfc_hba * phba, struct lpfc_scsi_buf * lpfc_cmd,
|
|
struct lpfc_nodelist *pnode)
|
|
{
|
|
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;
|
|
|
|
lpfc_cmd->fcp_rsp->rspSnsLen = 0;
|
|
|
|
lpfc_put_lun(lpfc_cmd->fcp_cmnd, lpfc_cmd->pCmd->device->lun);
|
|
|
|
memcpy(&fcp_cmnd->fcpCdb[0], scsi_cmnd->cmnd, 16);
|
|
|
|
if (scsi_cmnd->device->tagged_supported) {
|
|
switch (scsi_cmnd->tag) {
|
|
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_cmnd->use_sg) {
|
|
if (datadir == DMA_TO_DEVICE) {
|
|
iocb_cmd->ulpCommand = CMD_FCP_IWRITE64_CR;
|
|
iocb_cmd->un.fcpi.fcpi_parm = 0;
|
|
iocb_cmd->ulpPU = 0;
|
|
fcp_cmnd->fcpCntl3 = WRITE_DATA;
|
|
phba->fc4OutputRequests++;
|
|
} else {
|
|
iocb_cmd->ulpCommand = CMD_FCP_IREAD64_CR;
|
|
iocb_cmd->ulpPU = PARM_READ_CHECK;
|
|
iocb_cmd->un.fcpi.fcpi_parm =
|
|
scsi_cmnd->request_bufflen;
|
|
fcp_cmnd->fcpCntl3 = READ_DATA;
|
|
phba->fc4InputRequests++;
|
|
}
|
|
} else if (scsi_cmnd->request_buffer && scsi_cmnd->request_bufflen) {
|
|
if (datadir == DMA_TO_DEVICE) {
|
|
iocb_cmd->ulpCommand = CMD_FCP_IWRITE64_CR;
|
|
iocb_cmd->un.fcpi.fcpi_parm = 0;
|
|
iocb_cmd->ulpPU = 0;
|
|
fcp_cmnd->fcpCntl3 = WRITE_DATA;
|
|
phba->fc4OutputRequests++;
|
|
} else {
|
|
iocb_cmd->ulpCommand = CMD_FCP_IREAD64_CR;
|
|
iocb_cmd->ulpPU = PARM_READ_CHECK;
|
|
iocb_cmd->un.fcpi.fcpi_parm =
|
|
scsi_cmnd->request_bufflen;
|
|
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++;
|
|
}
|
|
|
|
/*
|
|
* Finish initializing those IOCB fields that are independent
|
|
* of the scsi_cmnd request_buffer
|
|
*/
|
|
piocbq->iocb.ulpContext = pnode->nlp_rpi;
|
|
if (pnode->nlp_fcp_info & NLP_FCP_2_DEVICE)
|
|
piocbq->iocb.ulpFCP2Rcvy = 1;
|
|
|
|
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;
|
|
}
|
|
|
|
static int
|
|
lpfc_scsi_prep_task_mgmt_cmd(struct lpfc_hba *phba,
|
|
struct lpfc_scsi_buf *lpfc_cmd,
|
|
uint8_t task_mgmt_cmd)
|
|
{
|
|
struct lpfc_sli *psli;
|
|
struct lpfc_iocbq *piocbq;
|
|
IOCB_t *piocb;
|
|
struct fcp_cmnd *fcp_cmnd;
|
|
struct scsi_device *scsi_dev = lpfc_cmd->pCmd->device;
|
|
struct lpfc_rport_data *rdata = scsi_dev->hostdata;
|
|
struct lpfc_nodelist *ndlp = rdata->pnode;
|
|
|
|
if ((ndlp == 0) || (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) {
|
|
return 0;
|
|
}
|
|
|
|
psli = &phba->sli;
|
|
piocbq = &(lpfc_cmd->cur_iocbq);
|
|
piocb = &piocbq->iocb;
|
|
|
|
fcp_cmnd = lpfc_cmd->fcp_cmnd;
|
|
lpfc_put_lun(lpfc_cmd->fcp_cmnd, lpfc_cmd->pCmd->device->lun);
|
|
fcp_cmnd->fcpCntl2 = task_mgmt_cmd;
|
|
|
|
piocb->ulpCommand = CMD_FCP_ICMND64_CR;
|
|
|
|
piocb->ulpContext = 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;
|
|
}
|
|
|
|
lpfc_cmd->rdata = rdata;
|
|
|
|
switch (task_mgmt_cmd) {
|
|
case FCP_LUN_RESET:
|
|
/* Issue LUN Reset to TGT <num> LUN <num> */
|
|
lpfc_printf_log(phba,
|
|
KERN_INFO,
|
|
LOG_FCP,
|
|
"%d:0703 Issue LUN Reset to TGT %d LUN %d "
|
|
"Data: x%x x%x\n",
|
|
phba->brd_no,
|
|
scsi_dev->id, scsi_dev->lun,
|
|
ndlp->nlp_rpi, ndlp->nlp_flag);
|
|
|
|
break;
|
|
case FCP_ABORT_TASK_SET:
|
|
/* Issue Abort Task Set to TGT <num> LUN <num> */
|
|
lpfc_printf_log(phba,
|
|
KERN_INFO,
|
|
LOG_FCP,
|
|
"%d:0701 Issue Abort Task Set to TGT %d LUN %d "
|
|
"Data: x%x x%x\n",
|
|
phba->brd_no,
|
|
scsi_dev->id, scsi_dev->lun,
|
|
ndlp->nlp_rpi, ndlp->nlp_flag);
|
|
|
|
break;
|
|
case FCP_TARGET_RESET:
|
|
/* Issue Target Reset to TGT <num> */
|
|
lpfc_printf_log(phba,
|
|
KERN_INFO,
|
|
LOG_FCP,
|
|
"%d:0702 Issue Target Reset to TGT %d "
|
|
"Data: x%x x%x\n",
|
|
phba->brd_no,
|
|
scsi_dev->id, ndlp->nlp_rpi,
|
|
ndlp->nlp_flag);
|
|
break;
|
|
}
|
|
|
|
return (1);
|
|
}
|
|
|
|
static int
|
|
lpfc_scsi_tgt_reset(struct lpfc_scsi_buf * lpfc_cmd, struct lpfc_hba * phba)
|
|
{
|
|
struct lpfc_iocbq *iocbq;
|
|
struct lpfc_iocbq *iocbqrsp = NULL;
|
|
struct list_head *lpfc_iocb_list = &phba->lpfc_iocb_list;
|
|
int ret;
|
|
|
|
ret = lpfc_scsi_prep_task_mgmt_cmd(phba, lpfc_cmd, FCP_TARGET_RESET);
|
|
if (!ret)
|
|
return FAILED;
|
|
|
|
lpfc_cmd->scsi_hba = phba;
|
|
iocbq = &lpfc_cmd->cur_iocbq;
|
|
list_remove_head(lpfc_iocb_list, iocbqrsp, struct lpfc_iocbq, list);
|
|
if (!iocbqrsp)
|
|
return FAILED;
|
|
memset(iocbqrsp, 0, sizeof (struct lpfc_iocbq));
|
|
|
|
iocbq->iocb_flag |= LPFC_IO_POLL;
|
|
ret = lpfc_sli_issue_iocb_wait_high_priority(phba,
|
|
&phba->sli.ring[phba->sli.fcp_ring],
|
|
iocbq, SLI_IOCB_HIGH_PRIORITY,
|
|
iocbqrsp,
|
|
lpfc_cmd->timeout);
|
|
if (ret != IOCB_SUCCESS) {
|
|
lpfc_cmd->status = IOSTAT_DRIVER_REJECT;
|
|
ret = FAILED;
|
|
} else {
|
|
ret = SUCCESS;
|
|
lpfc_cmd->result = iocbqrsp->iocb.un.ulpWord[4];
|
|
lpfc_cmd->status = iocbqrsp->iocb.ulpStatus;
|
|
if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT &&
|
|
(lpfc_cmd->result & IOERR_DRVR_MASK))
|
|
lpfc_cmd->status = IOSTAT_DRIVER_REJECT;
|
|
}
|
|
|
|
/*
|
|
* All outstanding txcmplq I/Os should have been aborted by the target.
|
|
* Unfortunately, some targets do not abide by this forcing the driver
|
|
* to double check.
|
|
*/
|
|
lpfc_sli_abort_iocb(phba, &phba->sli.ring[phba->sli.fcp_ring],
|
|
lpfc_cmd->pCmd->device->id,
|
|
lpfc_cmd->pCmd->device->lun, 0, LPFC_CTX_TGT);
|
|
|
|
/* Return response IOCB to free list. */
|
|
list_add_tail(&iocbqrsp->list, lpfc_iocb_list);
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
lpfc_scsi_cmd_iocb_cleanup (struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn,
|
|
struct lpfc_iocbq *pIocbOut)
|
|
{
|
|
unsigned long iflag;
|
|
struct lpfc_scsi_buf *lpfc_cmd =
|
|
(struct lpfc_scsi_buf *) pIocbIn->context1;
|
|
|
|
spin_lock_irqsave(phba->host->host_lock, iflag);
|
|
lpfc_free_scsi_buf(lpfc_cmd);
|
|
spin_unlock_irqrestore(phba->host->host_lock, iflag);
|
|
}
|
|
|
|
static void
|
|
lpfc_scsi_cmd_iocb_cmpl_aborted(struct lpfc_hba *phba,
|
|
struct lpfc_iocbq *pIocbIn,
|
|
struct lpfc_iocbq *pIocbOut)
|
|
{
|
|
struct scsi_cmnd *ml_cmd =
|
|
((struct lpfc_scsi_buf *) pIocbIn->context1)->pCmd;
|
|
|
|
lpfc_scsi_cmd_iocb_cleanup (phba, pIocbIn, pIocbOut);
|
|
ml_cmd->host_scribble = NULL;
|
|
}
|
|
|
|
const char *
|
|
lpfc_info(struct Scsi_Host *host)
|
|
{
|
|
struct lpfc_hba *phba = (struct lpfc_hba *) host->hostdata[0];
|
|
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);
|
|
}
|
|
}
|
|
return lpfcinfobuf;
|
|
}
|
|
|
|
static int
|
|
lpfc_queuecommand(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
|
|
{
|
|
struct lpfc_hba *phba =
|
|
(struct lpfc_hba *) cmnd->device->host->hostdata[0];
|
|
struct lpfc_sli *psli = &phba->sli;
|
|
struct lpfc_rport_data *rdata = cmnd->device->hostdata;
|
|
struct lpfc_nodelist *ndlp = rdata->pnode;
|
|
struct lpfc_scsi_buf *lpfc_cmd = NULL;
|
|
struct list_head *scsi_buf_list = &phba->lpfc_scsi_buf_list;
|
|
int err = 0;
|
|
|
|
/*
|
|
* The target pointer is guaranteed not to be NULL because the driver
|
|
* only clears the device->hostdata field in lpfc_slave_destroy. This
|
|
* approach guarantees no further IO calls on this target.
|
|
*/
|
|
if (!ndlp) {
|
|
cmnd->result = ScsiResult(DID_NO_CONNECT, 0);
|
|
goto out_fail_command;
|
|
}
|
|
|
|
/*
|
|
* A Fibre Channel target is present and functioning only when the node
|
|
* state is MAPPED. Any other state is a failure.
|
|
*/
|
|
if (ndlp->nlp_state != NLP_STE_MAPPED_NODE) {
|
|
if ((ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) ||
|
|
(ndlp->nlp_state == NLP_STE_UNUSED_NODE)) {
|
|
cmnd->result = ScsiResult(DID_NO_CONNECT, 0);
|
|
goto out_fail_command;
|
|
}
|
|
/*
|
|
* The device is most likely recovered and the driver
|
|
* needs a bit more time to finish. Ask the midlayer
|
|
* to retry.
|
|
*/
|
|
goto out_host_busy;
|
|
}
|
|
|
|
list_remove_head(scsi_buf_list, lpfc_cmd, struct lpfc_scsi_buf, list);
|
|
if (lpfc_cmd == NULL) {
|
|
printk(KERN_WARNING "%s: No buffer available - list empty, "
|
|
"total count %d\n", __FUNCTION__, phba->total_scsi_bufs);
|
|
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;
|
|
cmnd->host_scribble = (unsigned char *)lpfc_cmd;
|
|
cmnd->scsi_done = done;
|
|
|
|
err = lpfc_scsi_prep_dma_buf(phba, lpfc_cmd);
|
|
if (err)
|
|
goto out_host_busy_free_buf;
|
|
|
|
lpfc_scsi_prep_cmnd(phba, lpfc_cmd, ndlp);
|
|
|
|
err = lpfc_sli_issue_iocb(phba, &phba->sli.ring[psli->fcp_ring],
|
|
&lpfc_cmd->cur_iocbq, SLI_IOCB_RET_IOCB);
|
|
if (err)
|
|
goto out_host_busy_free_buf;
|
|
return 0;
|
|
|
|
out_host_busy_free_buf:
|
|
lpfc_free_scsi_buf(lpfc_cmd);
|
|
cmnd->host_scribble = NULL;
|
|
out_host_busy:
|
|
return SCSI_MLQUEUE_HOST_BUSY;
|
|
|
|
out_fail_command:
|
|
done(cmnd);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
__lpfc_abort_handler(struct scsi_cmnd *cmnd)
|
|
{
|
|
struct lpfc_hba *phba =
|
|
(struct lpfc_hba *)cmnd->device->host->hostdata[0];
|
|
struct lpfc_sli_ring *pring = &phba->sli.ring[phba->sli.fcp_ring];
|
|
struct lpfc_iocbq *iocb, *next_iocb;
|
|
struct lpfc_iocbq *abtsiocb = NULL;
|
|
struct lpfc_scsi_buf *lpfc_cmd;
|
|
struct list_head *lpfc_iocb_list = &phba->lpfc_iocb_list;
|
|
IOCB_t *cmd, *icmd;
|
|
unsigned long snum;
|
|
unsigned int id, lun;
|
|
unsigned int loop_count = 0;
|
|
int ret = IOCB_SUCCESS;
|
|
|
|
/*
|
|
* If the host_scribble data area is NULL, then the driver has already
|
|
* completed this command, but the midlayer did not see the completion
|
|
* before the eh fired. Just return SUCCESS.
|
|
*/
|
|
lpfc_cmd = (struct lpfc_scsi_buf *)cmnd->host_scribble;
|
|
if (!lpfc_cmd)
|
|
return SUCCESS;
|
|
|
|
/* save these now since lpfc_cmd can be freed */
|
|
id = lpfc_cmd->pCmd->device->id;
|
|
lun = lpfc_cmd->pCmd->device->lun;
|
|
snum = lpfc_cmd->pCmd->serial_number;
|
|
|
|
list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
|
|
cmd = &iocb->iocb;
|
|
if (iocb->context1 != lpfc_cmd)
|
|
continue;
|
|
|
|
list_del_init(&iocb->list);
|
|
pring->txq_cnt--;
|
|
if (!iocb->iocb_cmpl) {
|
|
list_add_tail(&iocb->list, lpfc_iocb_list);
|
|
}
|
|
else {
|
|
cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
|
|
cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
|
|
lpfc_scsi_cmd_iocb_cmpl_aborted(phba, iocb, iocb);
|
|
}
|
|
|
|
goto out;
|
|
}
|
|
|
|
list_remove_head(lpfc_iocb_list, abtsiocb, struct lpfc_iocbq, list);
|
|
if (abtsiocb == NULL)
|
|
return FAILED;
|
|
|
|
memset(abtsiocb, 0, sizeof (struct lpfc_iocbq));
|
|
|
|
/*
|
|
* The scsi command was not in the txq. Check the txcmplq and if it is
|
|
* found, send an abort to the FW.
|
|
*/
|
|
list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
|
|
if (iocb->context1 != lpfc_cmd)
|
|
continue;
|
|
|
|
iocb->iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl_aborted;
|
|
cmd = &iocb->iocb;
|
|
icmd = &abtsiocb->iocb;
|
|
icmd->un.acxri.abortType = ABORT_TYPE_ABTS;
|
|
icmd->un.acxri.abortContextTag = cmd->ulpContext;
|
|
icmd->un.acxri.abortIoTag = cmd->ulpIoTag;
|
|
|
|
icmd->ulpLe = 1;
|
|
icmd->ulpClass = cmd->ulpClass;
|
|
if (phba->hba_state >= LPFC_LINK_UP)
|
|
icmd->ulpCommand = CMD_ABORT_XRI_CN;
|
|
else
|
|
icmd->ulpCommand = CMD_CLOSE_XRI_CN;
|
|
|
|
abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl;
|
|
if (lpfc_sli_issue_iocb(phba, pring, abtsiocb, 0) ==
|
|
IOCB_ERROR) {
|
|
list_add_tail(&abtsiocb->list, lpfc_iocb_list);
|
|
ret = IOCB_ERROR;
|
|
break;
|
|
}
|
|
|
|
/* Wait for abort to complete */
|
|
while (cmnd->host_scribble)
|
|
{
|
|
spin_unlock_irq(phba->host->host_lock);
|
|
set_current_state(TASK_UNINTERRUPTIBLE);
|
|
schedule_timeout(LPFC_ABORT_WAIT*HZ);
|
|
spin_lock_irq(phba->host->host_lock);
|
|
if (++loop_count
|
|
> (2 * phba->cfg_nodev_tmo)/LPFC_ABORT_WAIT)
|
|
break;
|
|
}
|
|
|
|
if(cmnd->host_scribble) {
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
|
|
"%d:0748 abort handler timed "
|
|
"out waiting for abort to "
|
|
"complete. Data: "
|
|
"x%x x%x x%x x%lx\n",
|
|
phba->brd_no, ret, id, lun, snum);
|
|
cmnd->host_scribble = NULL;
|
|
iocb->iocb_cmpl = lpfc_scsi_cmd_iocb_cleanup;
|
|
ret = IOCB_ERROR;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
out:
|
|
lpfc_printf_log(phba, KERN_WARNING, LOG_FCP,
|
|
"%d:0749 SCSI layer issued abort device "
|
|
"Data: x%x x%x x%x x%lx\n",
|
|
phba->brd_no, ret, id, lun, snum);
|
|
|
|
return ret == IOCB_SUCCESS ? SUCCESS : FAILED;
|
|
}
|
|
|
|
static int
|
|
lpfc_abort_handler(struct scsi_cmnd *cmnd)
|
|
{
|
|
int rc;
|
|
spin_lock_irq(cmnd->device->host->host_lock);
|
|
rc = __lpfc_abort_handler(cmnd);
|
|
spin_unlock_irq(cmnd->device->host->host_lock);
|
|
return rc;
|
|
}
|
|
|
|
static int
|
|
__lpfc_reset_lun_handler(struct scsi_cmnd *cmnd)
|
|
{
|
|
struct Scsi_Host *shost = cmnd->device->host;
|
|
struct lpfc_hba *phba = (struct lpfc_hba *)shost->hostdata[0];
|
|
struct lpfc_sli *psli = &phba->sli;
|
|
struct lpfc_scsi_buf *lpfc_cmd = NULL;
|
|
struct list_head *scsi_buf_list = &phba->lpfc_scsi_buf_list;
|
|
struct list_head *lpfc_iocb_list = &phba->lpfc_iocb_list;
|
|
struct lpfc_iocbq *iocbq, *iocbqrsp = NULL;
|
|
struct lpfc_rport_data *rdata = cmnd->device->hostdata;
|
|
struct lpfc_nodelist *pnode = rdata->pnode;
|
|
int ret = FAILED;
|
|
int cnt, loopcnt;
|
|
|
|
/*
|
|
* If target is not in a MAPPED state, delay the reset until
|
|
* target is rediscovered or nodev timeout expires.
|
|
*/
|
|
while ( 1 ) {
|
|
if (!pnode)
|
|
break;
|
|
|
|
if (pnode->nlp_state != NLP_STE_MAPPED_NODE) {
|
|
spin_unlock_irq(phba->host->host_lock);
|
|
set_current_state(TASK_UNINTERRUPTIBLE);
|
|
schedule_timeout( HZ/2);
|
|
spin_lock_irq(phba->host->host_lock);
|
|
}
|
|
if ((pnode) && (pnode->nlp_state == NLP_STE_MAPPED_NODE))
|
|
break;
|
|
}
|
|
|
|
list_remove_head(scsi_buf_list, lpfc_cmd, struct lpfc_scsi_buf, list);
|
|
if (lpfc_cmd == NULL)
|
|
goto out;
|
|
|
|
lpfc_cmd->pCmd = cmnd;
|
|
lpfc_cmd->timeout = 60;
|
|
lpfc_cmd->scsi_hba = phba;
|
|
|
|
ret = lpfc_scsi_prep_task_mgmt_cmd(phba, lpfc_cmd, FCP_LUN_RESET);
|
|
if (!ret)
|
|
goto out_free_scsi_buf;
|
|
|
|
iocbq = &lpfc_cmd->cur_iocbq;
|
|
|
|
/* get a buffer for this IOCB command response */
|
|
list_remove_head(lpfc_iocb_list, iocbqrsp, struct lpfc_iocbq, list);
|
|
if (iocbqrsp == NULL)
|
|
goto out_free_scsi_buf;
|
|
|
|
memset(iocbqrsp, 0, sizeof (struct lpfc_iocbq));
|
|
|
|
iocbq->iocb_flag |= LPFC_IO_POLL;
|
|
iocbq->iocb_cmpl = lpfc_sli_wake_iocb_high_priority;
|
|
|
|
ret = lpfc_sli_issue_iocb_wait_high_priority(phba,
|
|
&phba->sli.ring[psli->fcp_ring],
|
|
iocbq, 0, iocbqrsp, 60);
|
|
if (ret == IOCB_SUCCESS)
|
|
ret = SUCCESS;
|
|
|
|
lpfc_cmd->result = iocbqrsp->iocb.un.ulpWord[4];
|
|
lpfc_cmd->status = iocbqrsp->iocb.ulpStatus;
|
|
if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT)
|
|
if (lpfc_cmd->result & IOERR_DRVR_MASK)
|
|
lpfc_cmd->status = IOSTAT_DRIVER_REJECT;
|
|
|
|
/*
|
|
* All outstanding txcmplq I/Os should have been aborted by the target.
|
|
* Unfortunately, some targets do not abide by this forcing the driver
|
|
* to double check.
|
|
*/
|
|
lpfc_sli_abort_iocb(phba, &phba->sli.ring[phba->sli.fcp_ring],
|
|
cmnd->device->id, cmnd->device->lun, 0,
|
|
LPFC_CTX_LUN);
|
|
|
|
loopcnt = 0;
|
|
while((cnt = lpfc_sli_sum_iocb(phba,
|
|
&phba->sli.ring[phba->sli.fcp_ring],
|
|
cmnd->device->id, cmnd->device->lun,
|
|
LPFC_CTX_LUN))) {
|
|
spin_unlock_irq(phba->host->host_lock);
|
|
set_current_state(TASK_UNINTERRUPTIBLE);
|
|
schedule_timeout(LPFC_RESET_WAIT*HZ);
|
|
spin_lock_irq(phba->host->host_lock);
|
|
|
|
if (++loopcnt
|
|
> (2 * phba->cfg_nodev_tmo)/LPFC_RESET_WAIT)
|
|
break;
|
|
}
|
|
|
|
if (cnt) {
|
|
lpfc_printf_log(phba, KERN_INFO, LOG_FCP,
|
|
"%d:0719 LUN Reset I/O flush failure: cnt x%x\n",
|
|
phba->brd_no, cnt);
|
|
}
|
|
|
|
list_add_tail(&iocbqrsp->list, lpfc_iocb_list);
|
|
|
|
out_free_scsi_buf:
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
|
|
"%d:0713 SCSI layer issued LUN reset (%d, %d) "
|
|
"Data: x%x x%x x%x\n",
|
|
phba->brd_no, lpfc_cmd->pCmd->device->id,
|
|
lpfc_cmd->pCmd->device->lun, ret, lpfc_cmd->status,
|
|
lpfc_cmd->result);
|
|
lpfc_free_scsi_buf(lpfc_cmd);
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static int
|
|
lpfc_reset_lun_handler(struct scsi_cmnd *cmnd)
|
|
{
|
|
int rc;
|
|
spin_lock_irq(cmnd->device->host->host_lock);
|
|
rc = __lpfc_reset_lun_handler(cmnd);
|
|
spin_unlock_irq(cmnd->device->host->host_lock);
|
|
return rc;
|
|
}
|
|
|
|
/*
|
|
* Note: midlayer calls this function with the host_lock held
|
|
*/
|
|
static int
|
|
__lpfc_reset_bus_handler(struct scsi_cmnd *cmnd)
|
|
{
|
|
struct Scsi_Host *shost = cmnd->device->host;
|
|
struct lpfc_hba *phba = (struct lpfc_hba *)shost->hostdata[0];
|
|
struct lpfc_nodelist *ndlp = NULL;
|
|
int match;
|
|
int ret = FAILED, i, err_count = 0;
|
|
int cnt, loopcnt;
|
|
unsigned int midlayer_id = 0;
|
|
struct lpfc_scsi_buf * lpfc_cmd = NULL;
|
|
struct list_head *scsi_buf_list = &phba->lpfc_scsi_buf_list;
|
|
|
|
list_remove_head(scsi_buf_list, lpfc_cmd, struct lpfc_scsi_buf, list);
|
|
if (lpfc_cmd == NULL)
|
|
goto out;
|
|
|
|
/* The lpfc_cmd storage is reused. Set all loop invariants. */
|
|
lpfc_cmd->timeout = 60;
|
|
lpfc_cmd->pCmd = cmnd;
|
|
lpfc_cmd->scsi_hba = phba;
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
midlayer_id = cmnd->device->id;
|
|
for (i = 0; i < MAX_FCP_TARGET; i++) {
|
|
/* Search the mapped list for this target ID */
|
|
match = 0;
|
|
list_for_each_entry(ndlp, &phba->fc_nlpmap_list, nlp_listp) {
|
|
if ((i == ndlp->nlp_sid) && ndlp->rport) {
|
|
match = 1;
|
|
break;
|
|
}
|
|
}
|
|
if (!match)
|
|
continue;
|
|
|
|
lpfc_cmd->pCmd->device->id = i;
|
|
lpfc_cmd->pCmd->device->hostdata = ndlp->rport->dd_data;
|
|
ret = lpfc_scsi_tgt_reset(lpfc_cmd, phba);
|
|
if (ret != SUCCESS) {
|
|
lpfc_printf_log(phba, KERN_INFO, LOG_FCP,
|
|
"%d:0713 Bus Reset on target %d failed\n",
|
|
phba->brd_no, i);
|
|
err_count++;
|
|
}
|
|
}
|
|
|
|
cmnd->device->id = midlayer_id;
|
|
loopcnt = 0;
|
|
while((cnt = lpfc_sli_sum_iocb(phba,
|
|
&phba->sli.ring[phba->sli.fcp_ring],
|
|
0, 0, LPFC_CTX_HOST))) {
|
|
spin_unlock_irq(phba->host->host_lock);
|
|
set_current_state(TASK_UNINTERRUPTIBLE);
|
|
schedule_timeout(LPFC_RESET_WAIT*HZ);
|
|
spin_lock_irq(phba->host->host_lock);
|
|
|
|
if (++loopcnt
|
|
> (2 * phba->cfg_nodev_tmo)/LPFC_RESET_WAIT)
|
|
break;
|
|
}
|
|
|
|
if (cnt) {
|
|
/* flush all outstanding commands on the host */
|
|
i = lpfc_sli_abort_iocb(phba,
|
|
&phba->sli.ring[phba->sli.fcp_ring], 0, 0, 0,
|
|
LPFC_CTX_HOST);
|
|
|
|
lpfc_printf_log(phba, KERN_INFO, LOG_FCP,
|
|
"%d:0715 Bus Reset I/O flush failure: cnt x%x left x%x\n",
|
|
phba->brd_no, cnt, i);
|
|
}
|
|
|
|
if (!err_count)
|
|
ret = SUCCESS;
|
|
|
|
lpfc_free_scsi_buf(lpfc_cmd);
|
|
lpfc_printf_log(phba,
|
|
KERN_ERR,
|
|
LOG_FCP,
|
|
"%d:0714 SCSI layer issued Bus Reset Data: x%x\n",
|
|
phba->brd_no, ret);
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static int
|
|
lpfc_reset_bus_handler(struct scsi_cmnd *cmnd)
|
|
{
|
|
int rc;
|
|
spin_lock_irq(cmnd->device->host->host_lock);
|
|
rc = __lpfc_reset_bus_handler(cmnd);
|
|
spin_unlock_irq(cmnd->device->host->host_lock);
|
|
return rc;
|
|
}
|
|
|
|
static int
|
|
lpfc_slave_alloc(struct scsi_device *sdev)
|
|
{
|
|
struct lpfc_hba *phba = (struct lpfc_hba *)sdev->host->hostdata[0];
|
|
struct lpfc_nodelist *ndlp = NULL;
|
|
int match = 0;
|
|
struct lpfc_scsi_buf *scsi_buf = NULL;
|
|
uint32_t total = 0, i;
|
|
uint32_t num_to_alloc = 0;
|
|
unsigned long flags;
|
|
struct list_head *listp;
|
|
struct list_head *node_list[6];
|
|
|
|
/*
|
|
* Store the target pointer in the scsi_device hostdata pointer provided
|
|
* the driver has already discovered the target id.
|
|
*/
|
|
|
|
/* Search the nlp lists other than unmap_list for this target ID */
|
|
node_list[0] = &phba->fc_npr_list;
|
|
node_list[1] = &phba->fc_nlpmap_list;
|
|
node_list[2] = &phba->fc_prli_list;
|
|
node_list[3] = &phba->fc_reglogin_list;
|
|
node_list[4] = &phba->fc_adisc_list;
|
|
node_list[5] = &phba->fc_plogi_list;
|
|
|
|
for (i = 0; i < 6 && !match; i++) {
|
|
listp = node_list[i];
|
|
if (list_empty(listp))
|
|
continue;
|
|
list_for_each_entry(ndlp, listp, nlp_listp) {
|
|
if ((sdev->id == ndlp->nlp_sid) && ndlp->rport) {
|
|
match = 1;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!match)
|
|
return -ENXIO;
|
|
|
|
sdev->hostdata = ndlp->rport->dd_data;
|
|
|
|
/*
|
|
* 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. Note
|
|
* that this list of scsi bufs exists for the lifetime of the driver.
|
|
*/
|
|
total = phba->total_scsi_bufs;
|
|
num_to_alloc = LPFC_CMD_PER_LUN;
|
|
if (total >= phba->cfg_hba_queue_depth) {
|
|
printk(KERN_WARNING "%s, At config limitation of "
|
|
"%d allocated scsi_bufs\n", __FUNCTION__, total);
|
|
return 0;
|
|
} else if (total + num_to_alloc > phba->cfg_hba_queue_depth) {
|
|
num_to_alloc = phba->cfg_hba_queue_depth - total;
|
|
}
|
|
|
|
for (i = 0; i < num_to_alloc; i++) {
|
|
scsi_buf = lpfc_get_scsi_buf(phba);
|
|
if (!scsi_buf) {
|
|
printk(KERN_ERR "%s, failed to allocate "
|
|
"scsi_buf\n", __FUNCTION__);
|
|
break;
|
|
}
|
|
|
|
spin_lock_irqsave(phba->host->host_lock, flags);
|
|
phba->total_scsi_bufs++;
|
|
list_add_tail(&scsi_buf->list, &phba->lpfc_scsi_buf_list);
|
|
spin_unlock_irqrestore(phba->host->host_lock, flags);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
lpfc_slave_configure(struct scsi_device *sdev)
|
|
{
|
|
struct lpfc_hba *phba = (struct lpfc_hba *) sdev->host->hostdata[0];
|
|
struct fc_rport *rport = starget_to_rport(sdev->sdev_target);
|
|
|
|
if (sdev->tagged_supported)
|
|
scsi_activate_tcq(sdev, phba->cfg_lun_queue_depth);
|
|
else
|
|
scsi_deactivate_tcq(sdev, phba->cfg_lun_queue_depth);
|
|
|
|
/*
|
|
* Initialize the fc transport attributes for the target
|
|
* containing this scsi device. Also note that the driver's
|
|
* target pointer is stored in the starget_data for the
|
|
* driver's sysfs entry point functions.
|
|
*/
|
|
rport->dev_loss_tmo = phba->cfg_nodev_tmo + 5;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
lpfc_slave_destroy(struct scsi_device *sdev)
|
|
{
|
|
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_reset_lun_handler,
|
|
.eh_bus_reset_handler = lpfc_reset_bus_handler,
|
|
.slave_alloc = lpfc_slave_alloc,
|
|
.slave_configure = lpfc_slave_configure,
|
|
.slave_destroy = lpfc_slave_destroy,
|
|
.this_id = -1,
|
|
.sg_tablesize = LPFC_SG_SEG_CNT,
|
|
.cmd_per_lun = LPFC_CMD_PER_LUN,
|
|
.use_clustering = ENABLE_CLUSTERING,
|
|
.shost_attrs = lpfc_host_attrs,
|
|
.max_sectors = 0xFFFF,
|
|
};
|