lpfc: Add recovery from adapter parity errors on some SLI4 adapters
authorJames Smart <james.smart@broadcom.com>
Wed, 6 Jul 2016 19:35:56 +0000 (12:35 -0700)
committerMartin K. Petersen <martin.petersen@oracle.com>
Fri, 15 Jul 2016 19:25:06 +0000 (15:25 -0400)
Add recovery from adapter parity errors on some SLI4 adapters

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
drivers/scsi/lpfc/lpfc.h
drivers/scsi/lpfc/lpfc_hw4.h
drivers/scsi/lpfc/lpfc_init.c
drivers/scsi/lpfc/lpfc_sli.c
drivers/scsi/lpfc/lpfc_sli4.h

index c6ade9b..64d6e33 100644 (file)
@@ -647,6 +647,7 @@ struct lpfc_hba {
 #define HBA_RRQ_ACTIVE         0x4000 /* process the rrq active list */
 #define HBA_FCP_IOQ_FLUSH      0x8000 /* FCP I/O queues being flushed */
 #define HBA_FW_DUMP_OP         0x10000 /* Skips fn reset before FW dump */
+#define HBA_RECOVERABLE_UE     0x20000 /* Firmware supports recoverable UE */
        uint32_t fcp_ring_in_use; /* When polling test if intr-hndlr active*/
        struct lpfc_dmabuf slim2p;
 
@@ -827,6 +828,7 @@ struct lpfc_hba {
 
        struct timer_list fcp_poll_timer;
        struct timer_list eratt_poll;
+       uint32_t eratt_poll_interval;
 
        /*
         * stat  counters
index 8a5e08d..8738b3d 100644 (file)
@@ -544,6 +544,8 @@ struct lpfc_register {
        uint32_t word0;
 };
 
+#define LPFC_PORT_SEM_UE_RECOVERABLE    0xE000
+#define LPFC_PORT_SEM_MASK             0xF000
 /* The following BAR0 Registers apply to SLI4 if_type 0 UCNAs. */
 #define LPFC_UERR_STATUS_HI            0x00A4
 #define LPFC_UERR_STATUS_LO            0x00A0
@@ -937,6 +939,7 @@ struct mbox_header {
 #define LPFC_MBOX_OPCODE_READ_OBJECT_LIST              0xAD
 #define LPFC_MBOX_OPCODE_DELETE_OBJECT                 0xAE
 #define LPFC_MBOX_OPCODE_GET_SLI4_PARAMETERS           0xB5
+#define LPFC_MBOX_OPCODE_SET_FEATURES                   0xBF
 
 /* FCoE Opcodes */
 #define LPFC_MBOX_OPCODE_FCOE_WQ_CREATE                        0x01
@@ -2887,6 +2890,25 @@ struct lpfc_sli4_parameters {
 #define cfg_ext_embed_cb_WORD                  word19
 };
 
+#define LPFC_SET_UE_RECOVERY            0x10
+struct lpfc_mbx_set_feature {
+       struct mbox_header header;
+       uint32_t feature;
+       uint32_t param_len;
+       uint32_t word6;
+#define lpfc_mbx_set_feature_UER_SHIFT  0
+#define lpfc_mbx_set_feature_UER_MASK   0x00000001
+#define lpfc_mbx_set_feature_UER_WORD   word6
+       uint32_t word7;
+#define lpfc_mbx_set_feature_UERP_SHIFT 0
+#define lpfc_mbx_set_feature_UERP_MASK  0x0000ffff
+#define lpfc_mbx_set_feature_UERP_WORD  word7
+#define lpfc_mbx_set_feature_UESR_SHIFT 16
+#define lpfc_mbx_set_feature_UESR_MASK  0x0000ffff
+#define lpfc_mbx_set_feature_UESR_WORD  word7
+};
+
+
 struct lpfc_mbx_get_sli4_parameters {
        struct mbox_header header;
        struct lpfc_sli4_parameters sli4_parameters;
@@ -3279,6 +3301,7 @@ struct lpfc_mqe {
                struct lpfc_mbx_get_prof_cfg get_prof_cfg;
                struct lpfc_mbx_wr_object wr_object;
                struct lpfc_mbx_get_port_name get_port_name;
+               struct lpfc_mbx_set_feature  set_feature;
                struct lpfc_mbx_memory_dump_type3 mem_dump_type3;
                struct lpfc_mbx_nop nop;
        } un;
index bce73b4..f11e33e 100644 (file)
@@ -568,7 +568,7 @@ lpfc_config_port_post(struct lpfc_hba *phba)
        phba->last_completion_time = jiffies;
        /* Set up error attention (ERATT) polling timer */
        mod_timer(&phba->eratt_poll,
-                 jiffies + msecs_to_jiffies(1000 * LPFC_ERATT_POLL_INTERVAL));
+                 jiffies + msecs_to_jiffies(1000 * phba->eratt_poll_interval));
 
        if (phba->hba_flag & LINK_DISABLED) {
                lpfc_printf_log(phba,
@@ -1587,35 +1587,38 @@ lpfc_sli4_port_sta_fn_reset(struct lpfc_hba *phba, int mbx_action,
        int rc;
        uint32_t intr_mode;
 
-       /*
-        * On error status condition, driver need to wait for port
-        * ready before performing reset.
-        */
-       rc = lpfc_sli4_pdev_status_reg_wait(phba);
-       if (!rc) {
-               /* need reset: attempt for port recovery */
-               if (en_rn_msg)
-                       lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
-                                       "2887 Reset Needed: Attempting Port "
-                                       "Recovery...\n");
-               lpfc_offline_prep(phba, mbx_action);
-               lpfc_offline(phba);
-               /* release interrupt for possible resource change */
-               lpfc_sli4_disable_intr(phba);
-               lpfc_sli_brdrestart(phba);
-               /* request and enable interrupt */
-               intr_mode = lpfc_sli4_enable_intr(phba, phba->intr_mode);
-               if (intr_mode == LPFC_INTR_ERROR) {
-                       lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
-                                       "3175 Failed to enable interrupt\n");
-                       return -EIO;
-               } else {
-                       phba->intr_mode = intr_mode;
-               }
-               rc = lpfc_online(phba);
-               if (rc == 0)
-                       lpfc_unblock_mgmt_io(phba);
+       if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
+           LPFC_SLI_INTF_IF_TYPE_2) {
+               /*
+                * On error status condition, driver need to wait for port
+                * ready before performing reset.
+                */
+               rc = lpfc_sli4_pdev_status_reg_wait(phba);
+               if (!rc)
+                       return rc;
+       }
+       /* need reset: attempt for port recovery */
+       if (en_rn_msg)
+               lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+                               "2887 Reset Needed: Attempting Port "
+                               "Recovery...\n");
+       lpfc_offline_prep(phba, mbx_action);
+       lpfc_offline(phba);
+       /* release interrupt for possible resource change */
+       lpfc_sli4_disable_intr(phba);
+       lpfc_sli_brdrestart(phba);
+       /* request and enable interrupt */
+       intr_mode = lpfc_sli4_enable_intr(phba, phba->intr_mode);
+       if (intr_mode == LPFC_INTR_ERROR) {
+               lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+                               "3175 Failed to enable interrupt\n");
+               return -EIO;
        }
+       phba->intr_mode = intr_mode;
+       rc = lpfc_online(phba);
+       if (rc == 0)
+               lpfc_unblock_mgmt_io(phba);
+
        return rc;
 }
 
@@ -1636,10 +1639,11 @@ lpfc_handle_eratt_s4(struct lpfc_hba *phba)
        struct lpfc_register portstat_reg = {0};
        uint32_t reg_err1, reg_err2;
        uint32_t uerrlo_reg, uemasklo_reg;
-       uint32_t pci_rd_rc1, pci_rd_rc2;
+       uint32_t smphr_port_status = 0, pci_rd_rc1, pci_rd_rc2;
        bool en_rn_msg = true;
        struct temp_event temp_event_data;
-       int rc;
+       struct lpfc_register portsmphr_reg;
+       int rc, i;
 
        /* If the pci channel is offline, ignore possible errors, since
         * we cannot communicate with the pci card anyway.
@@ -1647,6 +1651,7 @@ lpfc_handle_eratt_s4(struct lpfc_hba *phba)
        if (pci_channel_offline(phba->pcidev))
                return;
 
+       memset(&portsmphr_reg, 0, sizeof(portsmphr_reg));
        if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
        switch (if_type) {
        case LPFC_SLI_INTF_IF_TYPE_0:
@@ -1659,6 +1664,55 @@ lpfc_handle_eratt_s4(struct lpfc_hba *phba)
                /* consider PCI bus read error as pci_channel_offline */
                if (pci_rd_rc1 == -EIO && pci_rd_rc2 == -EIO)
                        return;
+               if (!(phba->hba_flag & HBA_RECOVERABLE_UE)) {
+                       lpfc_sli4_offline_eratt(phba);
+                       return;
+               }
+               lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+                               "7623 Checking UE recoverable");
+
+               for (i = 0; i < phba->sli4_hba.ue_to_sr / 1000; i++) {
+                       if (lpfc_readl(phba->sli4_hba.PSMPHRregaddr,
+                                      &portsmphr_reg.word0))
+                               continue;
+
+                       smphr_port_status = bf_get(lpfc_port_smphr_port_status,
+                                                  &portsmphr_reg);
+                       if ((smphr_port_status & LPFC_PORT_SEM_MASK) ==
+                           LPFC_PORT_SEM_UE_RECOVERABLE)
+                               break;
+                       /*Sleep for 1Sec, before checking SEMAPHORE */
+                       msleep(1000);
+               }
+
+               lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+                               "4827 smphr_port_status x%x : Waited %dSec",
+                               smphr_port_status, i);
+
+               /* Recoverable UE, reset the HBA device */
+               if ((smphr_port_status & LPFC_PORT_SEM_MASK) ==
+                   LPFC_PORT_SEM_UE_RECOVERABLE) {
+                       for (i = 0; i < 20; i++) {
+                               msleep(1000);
+                               if (!lpfc_readl(phba->sli4_hba.PSMPHRregaddr,
+                                   &portsmphr_reg.word0) &&
+                                   (LPFC_POST_STAGE_PORT_READY ==
+                                    bf_get(lpfc_port_smphr_port_status,
+                                    &portsmphr_reg))) {
+                                       rc = lpfc_sli4_port_sta_fn_reset(phba,
+                                               LPFC_MBX_NO_WAIT, en_rn_msg);
+                                       if (rc == 0)
+                                               return;
+                                       lpfc_printf_log(phba,
+                                               KERN_ERR, LOG_INIT,
+                                               "4215 Failed to recover UE");
+                                       break;
+                               }
+                       }
+               }
+               lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+                               "7624 Firmware not ready: Failing UE recovery,"
+                               " waited %dSec", i);
                lpfc_sli4_offline_eratt(phba);
                break;
 
@@ -5365,6 +5419,7 @@ lpfc_sli4_driver_resource_setup(struct lpfc_hba *phba)
                        goto out_free_bsmbx;
                }
        }
+
        /*
         * Get sli4 parameters that override parameters from Port capabilities.
         * If this call fails, it isn't critical unless the SLI4 parameters come
@@ -6093,6 +6148,7 @@ lpfc_hba_alloc(struct pci_dev *pdev)
                kfree(phba);
                return NULL;
        }
+       phba->eratt_poll_interval = LPFC_ERATT_POLL_INTERVAL;
 
        spin_lock_init(&phba->ct_ev_lock);
        INIT_LIST_HEAD(&phba->ct_ev_waiters);
index 70edf21..b3a781d 100644 (file)
@@ -2947,8 +2947,8 @@ void lpfc_poll_eratt(unsigned long ptr)
        else
                cnt = (sli_intr - phba->sli.slistat.sli_prev_intr);
 
-       /* 64-bit integer division not supporte on 32-bit x86 - use do_div */
-       do_div(cnt, LPFC_ERATT_POLL_INTERVAL);
+       /* 64-bit integer division not supported on 32-bit x86 - use do_div */
+       do_div(cnt, phba->eratt_poll_interval);
        phba->sli.slistat.sli_ips = cnt;
 
        phba->sli.slistat.sli_prev_intr = sli_intr;
@@ -2963,7 +2963,7 @@ void lpfc_poll_eratt(unsigned long ptr)
                /* Restart the timer for next eratt poll */
                mod_timer(&phba->eratt_poll,
                          jiffies +
-                         msecs_to_jiffies(1000 * LPFC_ERATT_POLL_INTERVAL));
+                         msecs_to_jiffies(1000 * phba->eratt_poll_interval));
        return;
 }
 
@@ -5690,6 +5690,40 @@ lpfc_sli4_dealloc_extent(struct lpfc_hba *phba, uint16_t type)
        return rc;
 }
 
+void
+lpfc_set_features(struct lpfc_hba *phba)
+{
+       LPFC_MBOXQ_t *mbox = NULL;
+       uint32_t len;
+       int rc;
+
+       mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+       if (!mbox)
+               return;
+       len = sizeof(struct lpfc_mbx_set_feature) -
+               sizeof(struct lpfc_sli4_cfg_mhdr);
+       lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
+                        LPFC_MBOX_OPCODE_SET_FEATURES, len,
+                        LPFC_SLI4_MBX_EMBED);
+       bf_set(lpfc_mbx_set_feature_UER,
+              &mbox->u.mqe.un.set_feature, 1);
+       mbox->u.mqe.un.set_feature.feature = LPFC_SET_UE_RECOVERY;
+       mbox->u.mqe.un.set_feature.param_len = 8;
+       rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
+
+       if (rc != MBX_SUCCESS) {
+               mempool_free(mbox, phba->mbox_mem_pool);
+               return;
+       }
+       phba->hba_flag |= HBA_RECOVERABLE_UE;
+       phba->eratt_poll_interval = 1;  /* Set 1Sec interval to detect UE */
+       phba->sli4_hba.ue_to_sr = bf_get(lpfc_mbx_set_feature_UESR,
+                                        &mbox->u.mqe.un.set_feature);
+       phba->sli4_hba.ue_to_rp = bf_get(lpfc_mbx_set_feature_UERP,
+                                        &mbox->u.mqe.un.set_feature);
+       mempool_free(mbox, phba->mbox_mem_pool);
+}
+
 /**
  * lpfc_sli4_alloc_resource_identifiers - Allocate all SLI4 resource extents.
  * @phba: Pointer to HBA context object.
@@ -6414,6 +6448,9 @@ lpfc_sli4_hba_setup(struct lpfc_hba *phba)
                phba->pport->cfg_lun_queue_depth = rc;
        }
 
+       if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
+           LPFC_SLI_INTF_IF_TYPE_0)
+               lpfc_set_features(phba);
 
        /*
         * Discover the port's supported feature set and match it against the
@@ -6612,7 +6649,7 @@ lpfc_sli4_hba_setup(struct lpfc_hba *phba)
 
        /* Start error attention (ERATT) polling timer */
        mod_timer(&phba->eratt_poll,
-                 jiffies + msecs_to_jiffies(1000 * LPFC_ERATT_POLL_INTERVAL));
+                 jiffies + msecs_to_jiffies(1000 * phba->eratt_poll_interval));
 
        /* Enable PCIe device Advanced Error Reporting (AER) if configured */
        if (phba->cfg_aer_support == 1 && !(phba->hba_flag & HBA_AER_ENABLED)) {
index cd780c2..1f45723 100644 (file)
@@ -511,6 +511,8 @@ struct lpfc_sli4_hba {
 
        uint32_t ue_mask_lo;
        uint32_t ue_mask_hi;
+       uint32_t ue_to_sr;
+       uint32_t ue_to_rp;
        struct lpfc_register sli_intf;
        struct lpfc_pc_sli4_params pc_sli4_params;
        struct msix_entry *msix_entries;