From: Gavin Shan <gwshan@linux.vnet.ibm.com>
To: benh@kernel.crashing.org
Cc: linuxppc-dev@lists.ozlabs.org, Gavin Shan <gwshan@linux.vnet.ibm.com>
Subject: [PATCH 02/25] powerpc/powernv: Remove PNV_EEH_STATE_REMOVED
Date: Thu, 24 Apr 2014 18:00:08 +1000 [thread overview]
Message-ID: <1398326431-24305-3-git-send-email-gwshan@linux.vnet.ibm.com> (raw)
In-Reply-To: <1398326431-24305-1-git-send-email-gwshan@linux.vnet.ibm.com>
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>
---
arch/powerpc/platforms/powernv/eeh-ioda.c | 56 +++++++++----------------------
arch/powerpc/platforms/powernv/pci.h | 1 -
2 files changed, 15 insertions(+), 42 deletions(-)
diff --git a/arch/powerpc/platforms/powernv/eeh-ioda.c b/arch/powerpc/platforms/powernv/eeh-ioda.c
index 253fefe..5432598 100644
--- 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
--- 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 */
--
1.8.3.2
next prev parent reply other threads:[~2014-04-24 8:00 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-24 8:00 [PATCH 00/25] EEH Enhancement and bug fixes Gavin Shan
2014-04-24 8:00 ` [PATCH 01/25] powerpc/eeh: Remove EEH_PE_PHB_DEAD Gavin Shan
2014-04-24 8:00 ` Gavin Shan [this message]
2014-04-24 8:00 ` [PATCH 03/25] powerpc/powernv: Move PNV_EEH_STATE_ENABLED around Gavin Shan
2014-04-24 8:00 ` [PATCH 04/25] powerpc/powernv: Remove fields in PHB diag-data dump Gavin Shan
2014-04-24 8:00 ` [PATCH 05/25] powerpc/eeh: EEH_PE_ISOLATED not reflect HW state Gavin Shan
2014-04-24 8:00 ` [PATCH 06/25] powerpc/eeh: Block PCI-CFG access during PE reset Gavin Shan
2014-04-24 8:00 ` [PATCH 07/25] powerpc/powernv: Use EEH PCI config accessors Gavin Shan
2014-04-24 8:00 ` [PATCH 08/25] powerpc/eeh: Avoid I/O access during PE reset Gavin Shan
2014-04-24 8:00 ` [PATCH 09/25] powerpc/eeh: Cleanup eeh_gather_pci_data() Gavin Shan
2014-04-24 8:00 ` [PATCH 10/25] powerpc/eeh: Use cached capability for log dump Gavin Shan
2014-04-24 8:00 ` [PATCH 11/25] powerpc/eeh: Cleanup EEH subsystem variables Gavin Shan
2014-04-24 8:00 ` [PATCH 12/25] powerpc/eeh: Allow to disable EEH Gavin Shan
2014-04-24 8:00 ` [PATCH 13/25] powerpc/eeh: No hotplug on permanently removed dev Gavin Shan
2014-04-24 8:00 ` [PATCH 14/25] powerpc/powernv: Fix endless reporting frozen PE Gavin Shan
2014-04-24 8:00 ` [PATCH 15/25] powerpc/pseries: Fix overwritten PE state Gavin Shan
2014-04-24 8:00 ` [PATCH 16/25] powerpc/powernv: Reset root port in firmware Gavin Shan
2014-04-24 8:00 ` [PATCH 17/25] powerpc/eeh: Make the delay for PE reset unified Gavin Shan
2014-04-24 8:00 ` [PATCH 18/25] powerpc/pci: Mask linkDown on resetting PCI bus Gavin Shan
2014-04-24 8:00 ` [PATCH 19/25] powrpc/powernv: Reset PHB in kdump kernel Gavin Shan
2014-04-24 8:00 ` [PATCH 20/25] powerpc/eeh: Can't recover from non-PE-reset case Gavin Shan
2014-04-24 8:00 ` [PATCH 21/25] powerpc/powernv: Fundamental reset on PLX ports Gavin Shan
2014-04-24 8:00 ` [PATCH 22/25] powerpc/powernv: Missed IOMMU table type Gavin Shan
2014-04-24 8:00 ` [PATCH 23/25] powerpc/powernv: pci_domain_nr() not reliable Gavin Shan
2014-04-24 8:00 ` [PATCH 24/25] PCI: Fix return value from pci_user_{read, write}_config_*() Gavin Shan
2014-04-24 8:00 ` [PATCH 25/25] powerpc/prom: Stop scanning dev-tree for fdump early Gavin Shan
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