4 files changed, 58 insertions, 15 deletions

diff --git a/arch/powerpc/include/asm/eeh.h b/arch/powerpc/include/asm/eeh.h
index 494c3fff4623..9983c3d26bca 100644
--- a/arch/powerpc/include/asm/eeh.h
+++ b/arch/powerpc/include/asm/eeh.h
@@ -88,6 +88,7 @@ struct eeh_pe {
 	int false_positives;		/* Times of reported #ff's	*/
 	atomic_t pass_dev_cnt;		/* Count of passed through devs	*/
 	struct eeh_pe *parent;		/* Parent PE			*/
+	void *data;			/* PE auxillary data		*/
 	struct list_head child_list;	/* Link PE to the child list	*/
 	struct list_head edevs;		/* Link list of EEH devices	*/
 	struct list_head child;		/* Child PEs			*/
@@ -248,6 +249,7 @@ static inline void eeh_serialize_unlock(unsigned long flags)
 #define EEH_MAX_ALLOWED_FREEZES 5
 
 typedef void *(*eeh_traverse_func)(void *data, void *flag);
+void eeh_set_pe_aux_size(int size);
 int eeh_phb_pe_create(struct pci_controller *phb);
 struct eeh_pe *eeh_phb_pe_get(struct pci_controller *phb);
 struct eeh_pe *eeh_pe_get(struct eeh_dev *edev);
diff --git a/arch/powerpc/kernel/eeh_pe.c b/arch/powerpc/kernel/eeh_pe.c
index 77632abf6a75..00e3844525a6 100644
--- a/arch/powerpc/kernel/eeh_pe.c
+++ b/arch/powerpc/kernel/eeh_pe.c
@@ -32,9 +32,24 @@
 #include <asm/pci-bridge.h>
 #include <asm/ppc-pci.h>
 
+static int eeh_pe_aux_size = 0;
 static LIST_HEAD(eeh_phb_pe);
 
 /**
+ * eeh_set_pe_aux_size - Set PE auxillary data size
+ * @size: PE auxillary data size
+ *
+ * Set PE auxillary data size
+ */
+void eeh_set_pe_aux_size(int size)
+{
+	if (size < 0)
+		return;
+
+	eeh_pe_aux_size = size;
+}
+
+/**
  * eeh_pe_alloc - Allocate PE
  * @phb: PCI controller
  * @type: PE type
@@ -44,9 +59,16 @@ static LIST_HEAD(eeh_phb_pe);
 static struct eeh_pe *eeh_pe_alloc(struct pci_controller *phb, int type)
 {
 	struct eeh_pe *pe;
+	size_t alloc_size;
+
+	alloc_size = sizeof(struct eeh_pe);
+	if (eeh_pe_aux_size) {
+		alloc_size = ALIGN(alloc_size, cache_line_size());
+		alloc_size += eeh_pe_aux_size;
+	}
 
 	/* Allocate PHB PE */
-	pe = kzalloc(sizeof(struct eeh_pe), GFP_KERNEL);
+	pe = kzalloc(alloc_size, GFP_KERNEL);
 	if (!pe) return NULL;
 
 	/* Initialize PHB PE */
@@ -56,6 +78,8 @@ static struct eeh_pe *eeh_pe_alloc(struct pci_controller *phb, int type)
 	INIT_LIST_HEAD(&pe->child);
 	INIT_LIST_HEAD(&pe->edevs);
 
+	pe->data = (void *)pe + ALIGN(sizeof(struct eeh_pe),
+				      cache_line_size());
 	return pe;
 }
 
diff --git a/arch/powerpc/platforms/powernv/eeh-ioda.c b/arch/powerpc/platforms/powernv/eeh-ioda.c
index 4909e5f3adda..f4d0259a63c3 100644
--- a/arch/powerpc/platforms/powernv/eeh-ioda.c
+++ b/arch/powerpc/platforms/powernv/eeh-ioda.c
@@ -239,20 +239,16 @@ static int ioda_eeh_set_option(struct eeh_pe *pe, int option)
 	return ret;
 }
 
-static void ioda_eeh_phb_diag(struct pci_controller *hose)
+static void ioda_eeh_phb_diag(struct eeh_pe *pe)
 {
-	struct pnv_phb *phb = hose->private_data;
+	struct pnv_phb *phb = pe->phb->private_data;
 	long rc;
 
-	rc = opal_pci_get_phb_diag_data2(phb->opal_id, phb->diag.blob,
+	rc = opal_pci_get_phb_diag_data2(phb->opal_id, pe->data,
 					 PNV_PCI_DIAG_BUF_SIZE);
-	if (rc != OPAL_SUCCESS) {
+	if (rc != OPAL_SUCCESS)
 		pr_warn("%s: Failed to get diag-data for PHB#%x (%ld)\n",
-			__func__, hose->global_number, rc);
-		return;
-	}
-
-	pnv_pci_dump_phb_diag_data(hose, phb->diag.blob);
+			__func__, pe->phb->global_number, rc);
 }
 
 /**
@@ -323,7 +319,7 @@ static int ioda_eeh_get_state(struct eeh_pe *pe)
 			result |= EEH_STATE_DMA_ENABLED;
 		} else if (!(pe->state & EEH_PE_ISOLATED)) {
 			eeh_pe_state_mark(pe, EEH_PE_ISOLATED);
-			ioda_eeh_phb_diag(hose);
+			ioda_eeh_phb_diag(pe);
 		}
 
 		return result;
@@ -373,7 +369,7 @@ static int ioda_eeh_get_state(struct eeh_pe *pe)
 	    (EEH_STATE_MMIO_ACTIVE | EEH_STATE_DMA_ACTIVE) &&
 	    !(pe->state & EEH_PE_ISOLATED)) {
 		eeh_pe_state_mark(pe, EEH_PE_ISOLATED);
-		ioda_eeh_phb_diag(hose);
+		ioda_eeh_phb_diag(pe);
 	}
 
 	return result;
@@ -589,6 +585,24 @@ static int ioda_eeh_reset(struct eeh_pe *pe, int option)
 }
 
 /**
+ * ioda_eeh_get_log - Retrieve error log
+ * @pe: frozen PE
+ * @severity: permanent or temporary error
+ * @drv_log: device driver log
+ * @len: length of device driver log
+ *
+ * Retrieve error log, which contains log from device driver
+ * and firmware.
+ */
+int ioda_eeh_get_log(struct eeh_pe *pe, int severity,
+		     char *drv_log, unsigned long len)
+{
+	pnv_pci_dump_phb_diag_data(pe->phb, pe->data);
+
+	return 0;
+}
+
+/**
  * ioda_eeh_configure_bridge - Configure the PCI bridges for the indicated PE
  * @pe: EEH PE
  *
@@ -805,7 +819,8 @@ static int ioda_eeh_next_error(struct eeh_pe **pe)
 					"detected, location: %s\n",
 					hose->global_number,
 					eeh_pe_loc_get(phb_pe));
-				ioda_eeh_phb_diag(hose);
+				ioda_eeh_phb_diag(phb_pe);
+				pnv_pci_dump_phb_diag_data(hose, phb_pe->data);
 				ret = EEH_NEXT_ERR_NONE;
 			}
 
@@ -853,7 +868,7 @@ static int ioda_eeh_next_error(struct eeh_pe **pe)
 		    ret == EEH_NEXT_ERR_FENCED_PHB) &&
 		    !((*pe)->state & EEH_PE_ISOLATED)) {
 			eeh_pe_state_mark(*pe, EEH_PE_ISOLATED);
-			ioda_eeh_phb_diag(hose);
+			ioda_eeh_phb_diag(*pe);
 		}
 
 		/*
@@ -899,6 +914,7 @@ struct pnv_eeh_ops ioda_eeh_ops = {
 	.set_option		= ioda_eeh_set_option,
 	.get_state		= ioda_eeh_get_state,
 	.reset			= ioda_eeh_reset,
+	.get_log		= ioda_eeh_get_log,
 	.configure_bridge	= ioda_eeh_configure_bridge,
 	.next_error		= ioda_eeh_next_error
 };
diff --git a/arch/powerpc/platforms/powernv/eeh-powernv.c b/arch/powerpc/platforms/powernv/eeh-powernv.c
index 4a113f3c9171..fd7a16f855ed 100644
--- a/arch/powerpc/platforms/powernv/eeh-powernv.c
+++ b/arch/powerpc/platforms/powernv/eeh-powernv.c
@@ -326,7 +326,7 @@ static int powernv_eeh_wait_state(struct eeh_pe *pe, int max_wait)
  * Retrieve the temporary or permanent error from the PE.
  */
 static int powernv_eeh_get_log(struct eeh_pe *pe, int severity,
-			char *drv_log, unsigned long len)
+			       char *drv_log, unsigned long len)
 {
 	struct pci_controller *hose = pe->phb;
 	struct pnv_phb *phb = hose->private_data;
@@ -430,6 +430,7 @@ static int __init eeh_powernv_init(void)
 {
 	int ret = -EINVAL;
 
+	eeh_set_pe_aux_size(PNV_PCI_DIAG_BUF_SIZE);
 	ret = eeh_ops_register(&powernv_eeh_ops);
 	if (!ret)
 		pr_info("EEH: PowerNV platform initialized\n");