powerpc/powernv: Remove PNV_EEH_STATE_REMOVED

The PHB state PNV_EEH_STATE_REMOVED maintained in pnv_phb isn't
so useful any more and it's duplicated to EEH_PE_ISOLATED. The
patch replaces PNV_EEH_STATE_REMOVED with EEH_PE_ISOLATED.

Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

diff --git a/arch/powerpc/platforms/powernv/eeh-ioda.c b/arch/powerpc/platforms/powernv/eeh-ioda.c
index 253fefe..5432598 100644 (file)
--- a/arch/powerpc/platforms/powernv/eeh-ioda.c
+++ b/arch/powerpc/platforms/powernv/eeh-ioda.c
@@ -639,22 +639,6 @@ static void ioda_eeh_hub_diag(struct pci_controller *hose)
        }
 }
 
-static int ioda_eeh_get_phb_pe(struct pci_controller *hose,
-                              struct eeh_pe **pe)
-{
-       struct eeh_pe *phb_pe;
-
-       phb_pe = eeh_phb_pe_get(hose);
-       if (!phb_pe) {
-               pr_warning("%s Can't find PE for PHB#%d\n",
-                          __func__, hose->global_number);
-               return -EEXIST;
-       }
-
-       *pe = phb_pe;
-       return 0;
-}
-
 static int ioda_eeh_get_pe(struct pci_controller *hose,
                           u16 pe_no, struct eeh_pe **pe)
 {
@@ -662,7 +646,8 @@ static int ioda_eeh_get_pe(struct pci_controller *hose,
        struct eeh_dev dev;
 
        /* Find the PHB PE */
-       if (ioda_eeh_get_phb_pe(hose, &phb_pe))
+       phb_pe = eeh_phb_pe_get(hose);
+       if (!phb_pe)
                return -EEXIST;
 
        /* Find the PE according to PE# */
@@ -690,6 +675,7 @@ static int ioda_eeh_next_error(struct eeh_pe **pe)
 {
        struct pci_controller *hose;
        struct pnv_phb *phb;
+       struct eeh_pe *phb_pe;
        u64 frozen_pe_no;
        u16 err_type, severity;
        long rc;
@@ -706,10 +692,12 @@ static int ioda_eeh_next_error(struct eeh_pe **pe)
        list_for_each_entry(hose, &hose_list, list_node) {
                /*
                 * If the subordinate PCI buses of the PHB has been
-                * removed, we needn't take care of it any more.
+                * removed or is exactly under error recovery, we
+                * needn't take care of it any more.
                 */
                phb = hose->private_data;
-               if (phb->eeh_state & PNV_EEH_STATE_REMOVED)
+               phb_pe = eeh_phb_pe_get(hose);
+               if (!phb_pe || (phb_pe->state & EEH_PE_ISOLATED))
                        continue;
 
                rc = opal_pci_next_error(phb->opal_id,
@@ -742,12 +730,6 @@ static int ioda_eeh_next_error(struct eeh_pe **pe)
                switch (err_type) {
                case OPAL_EEH_IOC_ERROR:
                        if (severity == OPAL_EEH_SEV_IOC_DEAD) {
-                               list_for_each_entry(hose, &hose_list,
-                                                   list_node) {
-                                       phb = hose->private_data;
-                                       phb->eeh_state |= PNV_EEH_STATE_REMOVED;
-                               }
-
                                pr_err("EEH: dead IOC detected\n");
                                ret = EEH_NEXT_ERR_DEAD_IOC;
                        } else if (severity == OPAL_EEH_SEV_INF) {
@@ -760,17 +742,12 @@ static int ioda_eeh_next_error(struct eeh_pe **pe)
                        break;
                case OPAL_EEH_PHB_ERROR:
                        if (severity == OPAL_EEH_SEV_PHB_DEAD) {
-                               if (ioda_eeh_get_phb_pe(hose, pe))
-                                       break;
-
+                               *pe = phb_pe;
                                pr_err("EEH: dead PHB#%x detected\n",
                                        hose->global_number);
-                               phb->eeh_state |= PNV_EEH_STATE_REMOVED;
                                ret = EEH_NEXT_ERR_DEAD_PHB;
                        } else if (severity == OPAL_EEH_SEV_PHB_FENCED) {
-                               if (ioda_eeh_get_phb_pe(hose, pe))
-                                       break;
-
+                               *pe = phb_pe;
                                pr_err("EEH: fenced PHB#%x detected\n",
                                        hose->global_number);
                                ret = EEH_NEXT_ERR_FENCED_PHB;
@@ -790,15 +767,12 @@ static int ioda_eeh_next_error(struct eeh_pe **pe)
                         * fenced PHB so that it can be recovered.
                         */
                        if (ioda_eeh_get_pe(hose, frozen_pe_no, pe)) {
-                               if (!ioda_eeh_get_phb_pe(hose, pe)) {
-                                       pr_err("EEH: Escalated fenced PHB#%x "
-                                              "detected for PE#%llx\n",
-                                               hose->global_number,
-                                               frozen_pe_no);
-                                       ret = EEH_NEXT_ERR_FENCED_PHB;
-                               } else {
-                                       ret = EEH_NEXT_ERR_NONE;
-                               }
+                               *pe = phb_pe;
+                               pr_err("EEH: Escalated fenced PHB#%x "
+                                      "detected for PE#%llx\n",
+                                       hose->global_number,
+                                       frozen_pe_no);
+                               ret = EEH_NEXT_ERR_FENCED_PHB;
                        } else {
                                pr_err("EEH: Frozen PE#%x on PHB#%x detected\n",
                                        (*pe)->addr, (*pe)->phb->global_number);

diff --git a/arch/powerpc/platforms/powernv/pci.h b/arch/powerpc/platforms/powernv/pci.h
index cde1694..6870f60 100644 (file)
--- a/arch/powerpc/platforms/powernv/pci.h
+++ b/arch/powerpc/platforms/powernv/pci.h
@@ -83,7 +83,6 @@ struct pnv_eeh_ops {
 };
 
 #define PNV_EEH_STATE_ENABLED  (1 << 0)        /* EEH enabled  */
-#define PNV_EEH_STATE_REMOVED  (1 << 1)        /* PHB removed  */
 
 #endif /* CONFIG_EEH */