[SCSI] lpfc 8.2.8 : Add support for PCI-EEH permanent disabling
Add support for PCI-EEH permanent-disabling a device via lpfc_pci_remove_one() Signed-off-by: James Smart <james.smart@emulex.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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84774a4d0a
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5 changed files with 103 additions and 3 deletions
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@ -199,6 +199,7 @@ int lpfc_sli_issue_iocb(struct lpfc_hba *, struct lpfc_sli_ring *,
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struct lpfc_iocbq *, uint32_t);
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void lpfc_sli_pcimem_bcopy(void *, void *, uint32_t);
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void lpfc_sli_abort_iocb_ring(struct lpfc_hba *, struct lpfc_sli_ring *);
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void lpfc_sli_flush_fcp_rings(struct lpfc_hba *);
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int lpfc_sli_ringpostbuf_put(struct lpfc_hba *, struct lpfc_sli_ring *,
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struct lpfc_dmabuf *);
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struct lpfc_dmabuf *lpfc_sli_ringpostbuf_get(struct lpfc_hba *,
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@ -290,6 +291,7 @@ void lpfc_unblock_fabric_iocbs(struct lpfc_hba *);
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void lpfc_adjust_queue_depth(struct lpfc_hba *);
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void lpfc_ramp_down_queue_handler(struct lpfc_hba *);
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void lpfc_ramp_up_queue_handler(struct lpfc_hba *);
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void lpfc_scsi_dev_block(struct lpfc_hba *);
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#define ScsiResult(host_code, scsi_code) (((host_code) << 16) | scsi_code)
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#define HBA_EVENT_RSCN 5
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@ -237,8 +237,6 @@ lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
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lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
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ndlp->nlp_sid, 0, LPFC_CTX_TGT);
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}
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if (vport->load_flag & FC_UNLOADING)
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warn_on = 0;
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if (warn_on) {
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lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
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@ -2661,8 +2661,15 @@ static pci_ers_result_t lpfc_io_error_detected(struct pci_dev *pdev,
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struct lpfc_sli *psli = &phba->sli;
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struct lpfc_sli_ring *pring;
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if (state == pci_channel_io_perm_failure)
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if (state == pci_channel_io_perm_failure) {
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lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
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"0472 PCI channel I/O permanent failure\n");
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/* Block all SCSI devices' I/Os on the host */
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lpfc_scsi_dev_block(phba);
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/* Clean up all driver's outstanding SCSI I/Os */
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lpfc_sli_flush_fcp_rings(phba);
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return PCI_ERS_RESULT_DISCONNECT;
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}
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pci_disable_device(pdev);
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/*
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@ -183,6 +183,35 @@ lpfc_ramp_up_queue_handler(struct lpfc_hba *phba)
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atomic_set(&phba->num_cmd_success, 0);
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}
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/**
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* lpfc_scsi_dev_block: set all scsi hosts to block state.
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* @phba: Pointer to HBA context object.
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*
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* This function walks vport list and set each SCSI host to block state
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* by invoking fc_remote_port_delete() routine. This function is invoked
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* with EEH when device's PCI slot has been permanently disabled.
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**/
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void
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lpfc_scsi_dev_block(struct lpfc_hba *phba)
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{
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struct lpfc_vport **vports;
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struct Scsi_Host *shost;
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struct scsi_device *sdev;
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struct fc_rport *rport;
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int i;
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vports = lpfc_create_vport_work_array(phba);
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if (vports != NULL)
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for (i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
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shost = lpfc_shost_from_vport(vports[i]);
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shost_for_each_device(sdev, shost) {
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rport = starget_to_rport(scsi_target(sdev));
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fc_remote_port_delete(rport);
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}
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}
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lpfc_destroy_vport_work_array(phba, vports);
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}
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/*
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* 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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@ -2376,6 +2376,70 @@ lpfc_sli_abort_iocb_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
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}
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}
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/**
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* lpfc_sli_flush_fcp_rings: flush all iocbs in the fcp ring.
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* @phba: Pointer to HBA context object.
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*
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* This function flushes all iocbs in the fcp ring and frees all the iocb
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* objects in txq and txcmplq. This function will not issue abort iocbs
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* for all the iocb commands in txcmplq, they will just be returned with
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* IOERR_SLI_DOWN. This function is invoked with EEH when device's PCI
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* slot has been permanently disabled.
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**/
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void
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lpfc_sli_flush_fcp_rings(struct lpfc_hba *phba)
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{
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LIST_HEAD(txq);
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LIST_HEAD(txcmplq);
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struct lpfc_iocbq *iocb;
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IOCB_t *cmd = NULL;
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struct lpfc_sli *psli = &phba->sli;
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struct lpfc_sli_ring *pring;
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/* Currently, only one fcp ring */
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pring = &psli->ring[psli->fcp_ring];
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spin_lock_irq(&phba->hbalock);
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/* Retrieve everything on txq */
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list_splice_init(&pring->txq, &txq);
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pring->txq_cnt = 0;
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/* Retrieve everything on the txcmplq */
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list_splice_init(&pring->txcmplq, &txcmplq);
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pring->txcmplq_cnt = 0;
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spin_unlock_irq(&phba->hbalock);
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/* Flush the txq */
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while (!list_empty(&txq)) {
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iocb = list_get_first(&txq, struct lpfc_iocbq, list);
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cmd = &iocb->iocb;
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list_del_init(&iocb->list);
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if (!iocb->iocb_cmpl)
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lpfc_sli_release_iocbq(phba, iocb);
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else {
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cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
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cmd->un.ulpWord[4] = IOERR_SLI_DOWN;
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(iocb->iocb_cmpl) (phba, iocb, iocb);
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}
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}
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/* Flush the txcmpq */
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while (!list_empty(&txcmplq)) {
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iocb = list_get_first(&txcmplq, struct lpfc_iocbq, list);
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cmd = &iocb->iocb;
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list_del_init(&iocb->list);
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if (!iocb->iocb_cmpl)
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lpfc_sli_release_iocbq(phba, iocb);
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else {
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cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
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cmd->un.ulpWord[4] = IOERR_SLI_DOWN;
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(iocb->iocb_cmpl) (phba, iocb, iocb);
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}
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}
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}
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/**
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* lpfc_sli_brdready: Check for host status bits.
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* @phba: Pointer to HBA context object.
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