mirror of https://gitee.com/openkylin/linux.git
[SCSI] lpfc 8.1.12 : Rework offline path to solve HBA reset issues
Rework offline path to solve HBA reset issues Signed-off-by: James Smart <James.Smart@emulex.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
parent
07951076ae
commit
46fa311e69
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@ -244,6 +244,7 @@ struct lpfc_hba {
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#define FC_FABRIC 0x100 /* We are fabric attached */
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#define FC_ESTABLISH_LINK 0x200 /* Reestablish Link */
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#define FC_RSCN_DISCOVERY 0x400 /* Authenticate all devices after RSCN*/
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#define FC_BLOCK_MGMT_IO 0x800 /* Don't allow mgmt mbx or iocb cmds */
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#define FC_LOADING 0x1000 /* HBA in process of loading drvr */
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#define FC_UNLOADING 0x2000 /* HBA in process of unloading drvr */
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#define FC_SCSI_SCAN_TMO 0x4000 /* scsi scan timer running */
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@ -20,6 +20,7 @@
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*******************************************************************/
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#include <linux/ctype.h>
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#include <linux/delay.h>
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#include <linux/pci.h>
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#include <linux/interrupt.h>
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@ -213,6 +214,7 @@ lpfc_issue_lip(struct Scsi_Host *host)
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int mbxstatus = MBXERR_ERROR;
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if ((phba->fc_flag & FC_OFFLINE_MODE) ||
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(phba->fc_flag & FC_BLOCK_MGMT_IO) ||
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(phba->hba_state != LPFC_HBA_READY))
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return -EPERM;
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@ -246,19 +248,62 @@ lpfc_issue_lip(struct Scsi_Host *host)
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return 0;
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}
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static int
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lpfc_do_offline(struct lpfc_hba *phba, uint32_t type)
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{
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struct completion online_compl;
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struct lpfc_sli_ring *pring;
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struct lpfc_sli *psli;
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int status = 0;
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int cnt = 0;
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int i;
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init_completion(&online_compl);
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lpfc_workq_post_event(phba, &status, &online_compl,
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LPFC_EVT_OFFLINE_PREP);
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wait_for_completion(&online_compl);
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if (status != 0)
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return -EIO;
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psli = &phba->sli;
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for (i = 0; i < psli->num_rings; i++) {
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pring = &psli->ring[i];
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/* The linkdown event takes 30 seconds to timeout. */
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while (pring->txcmplq_cnt) {
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msleep(10);
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if (cnt++ > 3000) {
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lpfc_printf_log(phba,
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KERN_WARNING, LOG_INIT,
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"%d:0466 Outstanding IO when "
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"bringing Adapter offline\n",
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phba->brd_no);
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break;
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}
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}
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}
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init_completion(&online_compl);
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lpfc_workq_post_event(phba, &status, &online_compl, type);
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wait_for_completion(&online_compl);
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if (status != 0)
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return -EIO;
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return 0;
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}
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static int
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lpfc_selective_reset(struct lpfc_hba *phba)
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{
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struct completion online_compl;
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int status = 0;
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init_completion(&online_compl);
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lpfc_workq_post_event(phba, &status, &online_compl,
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LPFC_EVT_OFFLINE);
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wait_for_completion(&online_compl);
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status = lpfc_do_offline(phba, LPFC_EVT_OFFLINE);
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if (status != 0)
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return -EIO;
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return status;
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init_completion(&online_compl);
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lpfc_workq_post_event(phba, &status, &online_compl,
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@ -324,23 +369,19 @@ lpfc_board_mode_store(struct class_device *cdev, const char *buf, size_t count)
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init_completion(&online_compl);
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if(strncmp(buf, "online", sizeof("online") - 1) == 0)
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if(strncmp(buf, "online", sizeof("online") - 1) == 0) {
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lpfc_workq_post_event(phba, &status, &online_compl,
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LPFC_EVT_ONLINE);
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else if (strncmp(buf, "offline", sizeof("offline") - 1) == 0)
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lpfc_workq_post_event(phba, &status, &online_compl,
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LPFC_EVT_OFFLINE);
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wait_for_completion(&online_compl);
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} else if (strncmp(buf, "offline", sizeof("offline") - 1) == 0)
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status = lpfc_do_offline(phba, LPFC_EVT_OFFLINE);
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else if (strncmp(buf, "warm", sizeof("warm") - 1) == 0)
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lpfc_workq_post_event(phba, &status, &online_compl,
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LPFC_EVT_WARM_START);
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else if (strncmp(buf, "error", sizeof("error") - 1) == 0)
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lpfc_workq_post_event(phba, &status, &online_compl,
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LPFC_EVT_KILL);
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status = lpfc_do_offline(phba, LPFC_EVT_WARM_START);
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else if (strncmp(buf, "error", sizeof("error") - 1) == 0)
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status = lpfc_do_offline(phba, LPFC_EVT_KILL);
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else
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return -EINVAL;
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wait_for_completion(&online_compl);
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if (!status)
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return strlen(buf);
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else
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@ -645,9 +686,7 @@ lpfc_soft_wwpn_store(struct class_device *cdev, const char *buf, size_t count)
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dev_printk(KERN_NOTICE, &phba->pcidev->dev,
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"lpfc%d: Reinitializing to use soft_wwpn\n", phba->brd_no);
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init_completion(&online_compl);
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lpfc_workq_post_event(phba, &stat1, &online_compl, LPFC_EVT_OFFLINE);
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wait_for_completion(&online_compl);
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stat1 = lpfc_do_offline(phba, LPFC_EVT_OFFLINE);
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if (stat1)
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lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
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"%d:0463 lpfc_soft_wwpn attribute set failed to reinit "
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@ -1307,6 +1346,12 @@ sysfs_mbox_read(struct kobject *kobj, char *buf, loff_t off, size_t count)
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return -EPERM;
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}
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if (phba->fc_flag & FC_BLOCK_MGMT_IO) {
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sysfs_mbox_idle(phba);
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spin_unlock_irq(host->host_lock);
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return -EAGAIN;
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}
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if ((phba->fc_flag & FC_OFFLINE_MODE) ||
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(!(phba->sli.sli_flag & LPFC_SLI2_ACTIVE))){
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@ -1551,6 +1596,9 @@ lpfc_get_stats(struct Scsi_Host *shost)
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unsigned long seconds;
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int rc = 0;
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if (phba->fc_flag & FC_BLOCK_MGMT_IO)
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return NULL;
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pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
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if (!pmboxq)
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return NULL;
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@ -1651,6 +1699,9 @@ lpfc_reset_stats(struct Scsi_Host *shost)
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MAILBOX_t *pmb;
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int rc = 0;
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if (phba->fc_flag & FC_BLOCK_MGMT_IO)
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return;
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pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
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if (!pmboxq)
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return;
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@ -112,7 +112,10 @@ void lpfc_hba_init(struct lpfc_hba *, uint32_t *);
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int lpfc_post_buffer(struct lpfc_hba *, struct lpfc_sli_ring *, int, int);
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void lpfc_decode_firmware_rev(struct lpfc_hba *, char *, int);
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int lpfc_online(struct lpfc_hba *);
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int lpfc_offline(struct lpfc_hba *);
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void lpfc_block_mgmt_io(struct lpfc_hba *);
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void lpfc_unblock_mgmt_io(struct lpfc_hba *);
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void lpfc_offline_prep(struct lpfc_hba *);
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void lpfc_offline(struct lpfc_hba *);
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int lpfc_sli_setup(struct lpfc_hba *);
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int lpfc_sli_queue_setup(struct lpfc_hba *);
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@ -31,6 +31,7 @@
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/* worker thread events */
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enum lpfc_work_type {
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LPFC_EVT_ONLINE,
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LPFC_EVT_OFFLINE_PREP,
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LPFC_EVT_OFFLINE,
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LPFC_EVT_WARM_START,
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LPFC_EVT_KILL,
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@ -185,29 +185,35 @@ lpfc_work_list_done(struct lpfc_hba * phba)
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*(int *)(evtp->evt_arg1) = 0;
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complete((struct completion *)(evtp->evt_arg2));
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break;
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case LPFC_EVT_OFFLINE:
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case LPFC_EVT_OFFLINE_PREP:
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if (phba->hba_state >= LPFC_LINK_DOWN)
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lpfc_offline(phba);
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lpfc_offline_prep(phba);
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*(int *)(evtp->evt_arg1) = 0;
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complete((struct completion *)(evtp->evt_arg2));
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break;
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case LPFC_EVT_OFFLINE:
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lpfc_offline(phba);
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lpfc_sli_brdrestart(phba);
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*(int *)(evtp->evt_arg1) =
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lpfc_sli_brdready(phba,HS_FFRDY | HS_MBRDY);
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lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
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lpfc_unblock_mgmt_io(phba);
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complete((struct completion *)(evtp->evt_arg2));
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break;
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case LPFC_EVT_WARM_START:
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if (phba->hba_state >= LPFC_LINK_DOWN)
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lpfc_offline(phba);
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lpfc_offline(phba);
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lpfc_reset_barrier(phba);
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lpfc_sli_brdreset(phba);
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lpfc_hba_down_post(phba);
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*(int *)(evtp->evt_arg1) =
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lpfc_sli_brdready(phba, HS_MBRDY);
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lpfc_unblock_mgmt_io(phba);
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complete((struct completion *)(evtp->evt_arg2));
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break;
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case LPFC_EVT_KILL:
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if (phba->hba_state >= LPFC_LINK_DOWN)
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lpfc_offline(phba);
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lpfc_offline(phba);
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*(int *)(evtp->evt_arg1)
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= (phba->stopped) ? 0 : lpfc_sli_brdkill(phba);
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lpfc_unblock_mgmt_io(phba);
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complete((struct completion *)(evtp->evt_arg2));
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break;
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}
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@ -549,12 +549,15 @@ lpfc_handle_eratt(struct lpfc_hba * phba)
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* There was a firmware error. Take the hba offline and then
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* attempt to restart it.
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*/
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lpfc_offline_prep(phba);
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lpfc_offline(phba);
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lpfc_sli_brdrestart(phba);
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if (lpfc_online(phba) == 0) { /* Initialize the HBA */
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mod_timer(&phba->fc_estabtmo, jiffies + HZ * 60);
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lpfc_unblock_mgmt_io(phba);
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return;
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}
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lpfc_unblock_mgmt_io(phba);
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} else {
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/* The if clause above forces this code path when the status
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* failure is a value other than FFER6. Do not call the offline
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@ -572,7 +575,9 @@ lpfc_handle_eratt(struct lpfc_hba * phba)
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SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX);
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psli->sli_flag &= ~LPFC_SLI2_ACTIVE;
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lpfc_offline_prep(phba);
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lpfc_offline(phba);
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lpfc_unblock_mgmt_io(phba);
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phba->hba_state = LPFC_HBA_ERROR;
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lpfc_hba_down_post(phba);
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}
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@ -1286,55 +1291,87 @@ lpfc_online(struct lpfc_hba * phba)
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"%d:0458 Bring Adapter online\n",
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phba->brd_no);
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if (!lpfc_sli_queue_setup(phba))
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return 1;
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lpfc_block_mgmt_io(phba);
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if (lpfc_sli_hba_setup(phba)) /* Initialize the HBA */
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if (!lpfc_sli_queue_setup(phba)) {
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lpfc_unblock_mgmt_io(phba);
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return 1;
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}
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if (lpfc_sli_hba_setup(phba)) { /* Initialize the HBA */
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lpfc_unblock_mgmt_io(phba);
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return 1;
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}
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spin_lock_irq(phba->host->host_lock);
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phba->fc_flag &= ~FC_OFFLINE_MODE;
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spin_unlock_irq(phba->host->host_lock);
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lpfc_unblock_mgmt_io(phba);
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return 0;
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}
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int
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lpfc_offline(struct lpfc_hba * phba)
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void
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lpfc_block_mgmt_io(struct lpfc_hba * phba)
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{
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struct lpfc_sli_ring *pring;
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struct lpfc_sli *psli;
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unsigned long iflag;
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int i;
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int cnt = 0;
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if (!phba)
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return 0;
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spin_lock_irqsave(phba->host->host_lock, iflag);
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phba->fc_flag |= FC_BLOCK_MGMT_IO;
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spin_unlock_irqrestore(phba->host->host_lock, iflag);
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}
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void
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lpfc_unblock_mgmt_io(struct lpfc_hba * phba)
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{
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unsigned long iflag;
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spin_lock_irqsave(phba->host->host_lock, iflag);
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phba->fc_flag &= ~FC_BLOCK_MGMT_IO;
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spin_unlock_irqrestore(phba->host->host_lock, iflag);
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}
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void
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lpfc_offline_prep(struct lpfc_hba * phba)
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{
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struct lpfc_nodelist *ndlp, *next_ndlp;
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struct list_head *listp, *node_list[7];
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int i;
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if (phba->fc_flag & FC_OFFLINE_MODE)
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return 0;
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return;
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psli = &phba->sli;
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lpfc_block_mgmt_io(phba);
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lpfc_linkdown(phba);
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lpfc_sli_flush_mbox_queue(phba);
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for (i = 0; i < psli->num_rings; i++) {
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pring = &psli->ring[i];
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/* The linkdown event takes 30 seconds to timeout. */
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while (pring->txcmplq_cnt) {
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msleep(10);
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if (cnt++ > 3000) {
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lpfc_printf_log(phba,
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KERN_WARNING, LOG_INIT,
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"%d:0466 Outstanding IO when "
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"bringing Adapter offline\n",
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phba->brd_no);
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break;
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}
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}
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/* Issue an unreg_login to all nodes */
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node_list[0] = &phba->fc_npr_list; /* MUST do this list first */
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node_list[1] = &phba->fc_nlpmap_list;
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node_list[2] = &phba->fc_nlpunmap_list;
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node_list[3] = &phba->fc_prli_list;
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node_list[4] = &phba->fc_reglogin_list;
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node_list[5] = &phba->fc_adisc_list;
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node_list[6] = &phba->fc_plogi_list;
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for (i = 0; i < 7; i++) {
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listp = node_list[i];
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if (list_empty(listp))
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continue;
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list_for_each_entry_safe(ndlp, next_ndlp, listp, nlp_listp)
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lpfc_unreg_rpi(phba, ndlp);
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}
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lpfc_sli_flush_mbox_queue(phba);
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}
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void
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lpfc_offline(struct lpfc_hba * phba)
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{
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unsigned long iflag;
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if (phba->fc_flag & FC_OFFLINE_MODE)
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return;
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/* stop all timers associated with this hba */
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lpfc_stop_timer(phba);
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spin_lock_irqsave(phba->host->host_lock, iflag);
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phba->fc_flag |= FC_OFFLINE_MODE;
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spin_unlock_irqrestore(phba->host->host_lock, iflag);
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return 0;
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}
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/******************************************************************************
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