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[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>
This commit is contained in:
James Smart 2008-08-24 21:50:11 -04:00 committed by James Bottomley
parent 84774a4d0a
commit a8e497d51e
5 changed files with 103 additions and 3 deletions
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2
drivers/scsi/lpfc/lpfc_crtn.h
View File

@ -199,6 +199,7 @@ int lpfc_sli_issue_iocb(struct lpfc_hba *, struct lpfc_sli_ring *,
struct lpfc_iocbq *, uint32_t);
void lpfc_sli_pcimem_bcopy(void *, void *, uint32_t);
void lpfc_sli_abort_iocb_ring(struct lpfc_hba *, struct lpfc_sli_ring *);
void lpfc_sli_flush_fcp_rings(struct lpfc_hba *);
int lpfc_sli_ringpostbuf_put(struct lpfc_hba *, struct lpfc_sli_ring *,
struct lpfc_dmabuf *);
struct lpfc_dmabuf *lpfc_sli_ringpostbuf_get(struct lpfc_hba *,
@ -290,6 +291,7 @@ void lpfc_unblock_fabric_iocbs(struct lpfc_hba *);
void lpfc_adjust_queue_depth(struct lpfc_hba *);
void lpfc_ramp_down_queue_handler(struct lpfc_hba *);
void lpfc_ramp_up_queue_handler(struct lpfc_hba *);
void lpfc_scsi_dev_block(struct lpfc_hba *);
#define ScsiResult(host_code, scsi_code) (((host_code) << 16) | scsi_code)
#define HBA_EVENT_RSCN 5

2
drivers/scsi/lpfc/lpfc_hbadisc.c
View File

@ -237,8 +237,6 @@ lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
ndlp->nlp_sid, 0, LPFC_CTX_TGT);
}
if (vport->load_flag & FC_UNLOADING)
warn_on = 0;
if (warn_on) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,

9
drivers/scsi/lpfc/lpfc_init.c
View File

@ -2661,8 +2661,15 @@ static pci_ers_result_t lpfc_io_error_detected(struct pci_dev *pdev,
struct lpfc_sli *psli = &phba->sli;
struct lpfc_sli_ring *pring;
if (state == pci_channel_io_perm_failure)
if (state == pci_channel_io_perm_failure) {
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"0472 PCI channel I/O permanent failure\n");
/* Block all SCSI devices' I/Os on the host */
lpfc_scsi_dev_block(phba);
/* Clean up all driver's outstanding SCSI I/Os */
lpfc_sli_flush_fcp_rings(phba);
return PCI_ERS_RESULT_DISCONNECT;
}
pci_disable_device(pdev);
/*

29
drivers/scsi/lpfc/lpfc_scsi.c
View File

@ -183,6 +183,35 @@ lpfc_ramp_up_queue_handler(struct lpfc_hba *phba)
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_vpi && 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);
}
/*
* This routine allocates a scsi buffer, which contains all the necessary
* information needed to initiate a SCSI I/O. The non-DMAable buffer region

64
drivers/scsi/lpfc/lpfc_sli.c
View File

@ -2376,6 +2376,70 @@ lpfc_sli_abort_iocb_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
}
}
/**
* lpfc_sli_flush_fcp_rings: flush all iocbs in the fcp ring.
* @phba: Pointer to HBA context object.
*
* This function flushes all iocbs in the fcp ring and frees all the iocb
* objects in txq and txcmplq. This function will not issue abort iocbs
* for all the iocb commands in txcmplq, they will just be returned with
* IOERR_SLI_DOWN. This function is invoked with EEH when device's PCI
* slot has been permanently disabled.
**/
void
lpfc_sli_flush_fcp_rings(struct lpfc_hba *phba)
{
LIST_HEAD(txq);
LIST_HEAD(txcmplq);
struct lpfc_iocbq *iocb;
IOCB_t *cmd = NULL;
struct lpfc_sli *psli = &phba->sli;
struct lpfc_sli_ring *pring;
/* Currently, only one fcp ring */
pring = &psli->ring[psli->fcp_ring];
spin_lock_irq(&phba->hbalock);
/* Retrieve everything on txq */
list_splice_init(&pring->txq, &txq);
pring->txq_cnt = 0;
/* Retrieve everything on the txcmplq */
list_splice_init(&pring->txcmplq, &txcmplq);
pring->txcmplq_cnt = 0;
spin_unlock_irq(&phba->hbalock);
/* Flush the txq */
while (!list_empty(&txq)) {
iocb = list_get_first(&txq, struct lpfc_iocbq, list);
cmd = &iocb->iocb;
list_del_init(&iocb->list);
if (!iocb->iocb_cmpl)
lpfc_sli_release_iocbq(phba, iocb);
else {
cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
cmd->un.ulpWord[4] = IOERR_SLI_DOWN;
(iocb->iocb_cmpl) (phba, iocb, iocb);
}
}
/* Flush the txcmpq */
while (!list_empty(&txcmplq)) {
iocb = list_get_first(&txcmplq, struct lpfc_iocbq, list);
cmd = &iocb->iocb;
list_del_init(&iocb->list);
if (!iocb->iocb_cmpl)
lpfc_sli_release_iocbq(phba, iocb);
else {
cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
cmd->un.ulpWord[4] = IOERR_SLI_DOWN;
(iocb->iocb_cmpl) (phba, iocb, iocb);
}
}
}
/**
* lpfc_sli_brdready: Check for host status bits.
* @phba: Pointer to HBA context object.