[PATCH 21/21] ppc/eeh: trace eeh device from I/O cache
The idea comes from Benjamin Herrenschmidt. The eeh cache helps
fetching the pci device according to the given I/O address. Since
the eeh cache is serving for eeh, it's reasonable for eeh cache
to trace eeh device except pci device.
The patch make eeh cache to trace eeh device. Also, the major
eeh entry function eeh_dn_check_failure has been renamed to
eeh_dev_check_failure since it will take eeh device as input
parameter.
Signed-off-by: Gavin Shan sha...@linux.vnet.ibm.com
---
arch/powerpc/include/asm/eeh.h |7 +
arch/powerpc/include/asm/pci-bridge.h |2 +
arch/powerpc/include/asm/ppc-pci.h |2 +-
arch/powerpc/kernel/rtas_pci.c |2 +-
arch/powerpc/platforms/pseries/eeh.c | 33 +++
arch/powerpc/platforms/pseries/eeh_cache.c | 14 ++-
6 files changed, 28 insertions(+), 32 deletions(-)
diff --git a/arch/powerpc/include/asm/eeh.h b/arch/powerpc/include/asm/eeh.h
index 91c38b7..4d59da0 100644
--- a/arch/powerpc/include/asm/eeh.h
+++ b/arch/powerpc/include/asm/eeh.h
@@ -196,7 +196,7 @@ int __init eeh_ops_register(struct eeh_ops *ops);
int __exit eeh_ops_unregister(const char *name);
unsigned long eeh_check_failure(const volatile void __iomem *token,
unsigned long val);
-int eeh_dn_check_failure(struct device_node *dn, struct pci_dev *dev);
+int eeh_dev_check_failure(struct eeh_dev *edev);
void __init pci_addr_cache_build(void);
void eeh_add_device_tree_early(struct device_node *);
void eeh_add_device_tree_late(struct pci_bus *);
@@ -231,10 +231,7 @@ static inline unsigned long eeh_check_failure(const
volatile void __iomem *token
return val;
}
-static inline int eeh_dn_check_failure(struct device_node *dn, struct pci_dev
*dev)
-{
- return 0;
-}
+#define eeh_dev_check_failure(x) (0)
static inline void pci_addr_cache_build(void) { }
diff --git a/arch/powerpc/include/asm/pci-bridge.h
b/arch/powerpc/include/asm/pci-bridge.h
index 8cccbee..973df4d 100644
--- a/arch/powerpc/include/asm/pci-bridge.h
+++ b/arch/powerpc/include/asm/pci-bridge.h
@@ -184,6 +184,8 @@ static inline struct eeh_dev *of_node_to_eeh_dev(struct
device_node *dn)
{
return PCI_DN(dn)-edev;
}
+#else
+#define of_node_to_eeh_dev(x) (NULL)
#endif
/** Find the bus corresponding to the indicated device node */
diff --git a/arch/powerpc/include/asm/ppc-pci.h
b/arch/powerpc/include/asm/ppc-pci.h
index 56d55c7..962a902 100644
--- a/arch/powerpc/include/asm/ppc-pci.h
+++ b/arch/powerpc/include/asm/ppc-pci.h
@@ -50,7 +50,7 @@ extern int rtas_setup_phb(struct pci_controller *phb);
void pci_addr_cache_build(void);
void pci_addr_cache_insert_device(struct pci_dev *dev);
void pci_addr_cache_remove_device(struct pci_dev *dev);
-struct pci_dev *pci_addr_cache_get_device(unsigned long addr);
+struct eeh_dev *pci_addr_cache_get_device(unsigned long addr);
void eeh_slot_error_detail(struct eeh_pe *pe, int severity);
int eeh_pci_enable(struct eeh_pe *pe, int function);
int eeh_reset_pe(struct eeh_pe *);
diff --git a/arch/powerpc/kernel/rtas_pci.c b/arch/powerpc/kernel/rtas_pci.c
index 140735c..6de63e3 100644
--- a/arch/powerpc/kernel/rtas_pci.c
+++ b/arch/powerpc/kernel/rtas_pci.c
@@ -81,7 +81,7 @@ int rtas_read_config(struct pci_dn *pdn, int where, int size,
u32 *val)
return PCIBIOS_DEVICE_NOT_FOUND;
if (returnval == EEH_IO_ERROR_VALUE(size)
- eeh_dn_check_failure (pdn-node, NULL))
+ eeh_dev_check_failure(of_node_to_eeh_dev(pdn-node)))
return PCIBIOS_DEVICE_NOT_FOUND;
return PCIBIOS_SUCCESSFUL;
diff --git a/arch/powerpc/platforms/pseries/eeh.c
b/arch/powerpc/platforms/pseries/eeh.c
index b2caf84..81e8c8e 100644
--- a/arch/powerpc/platforms/pseries/eeh.c
+++ b/arch/powerpc/platforms/pseries/eeh.c
@@ -270,9 +270,8 @@ static inline unsigned long eeh_token_to_phys(unsigned long
token)
}
/**
- * eeh_dn_check_failure - Check if all 1's data is due to EEH slot freeze
- * @dn: device node
- * @dev: pci device, if known
+ * eeh_dev_check_failure - Check if all 1's data is due to EEH slot freeze
+ * @edev: eeh device
*
* Check for an EEH failure for the given device node. Call this
* routine if the result of a read was all 0xff's and you want to
@@ -284,12 +283,13 @@ static inline unsigned long eeh_token_to_phys(unsigned
long token)
*
* It is safe to call this routine in an interrupt context.
*/
-int eeh_dn_check_failure(struct device_node *dn, struct pci_dev *dev)
+int eeh_dev_check_failure(struct eeh_dev *edev)
{
int ret;
unsigned long flags;
+ struct device_node *dn;
+ struct pci_dev *dev;
struct eeh_pe *pe;
- struct eeh_dev *edev;
int rc = 0;
const char *location;
@@ -298,15 +298,12 @@ int eeh_dn_check_failure(struct device_node *dn, struct
pci_dev *dev)
if (!eeh_subsystem_enabled)
return 0;
- if (dn) {
-
[PATCH 21/21] ppc/eeh: trace eeh device from I/O cache
The idea comes from Benjamin Herrenschmidt. The eeh cache helps
fetching the pci device according to the given I/O address. Since
the eeh cache is serving for eeh, it's reasonable for eeh cache
to trace eeh device except pci device.
The patch make eeh cache to trace eeh device. Also, the major
eeh entry function eeh_dn_check_failure has been renamed to
eeh_dev_check_failure since it will take eeh device as input
parameter.
Signed-off-by: Gavin Shan sha...@linux.vnet.ibm.com
---
arch/powerpc/include/asm/eeh.h |7 ++
arch/powerpc/include/asm/pci-bridge.h |2 ++
arch/powerpc/include/asm/ppc-pci.h |2 +-
arch/powerpc/kernel/rtas_pci.c |2 +-
arch/powerpc/platforms/pseries/eeh.c | 33
arch/powerpc/platforms/pseries/eeh_cache.c | 14 +++-
6 files changed, 28 insertions(+), 32 deletions(-)
diff --git a/arch/powerpc/include/asm/eeh.h b/arch/powerpc/include/asm/eeh.h
index 91c38b7..4d59da0 100644
--- a/arch/powerpc/include/asm/eeh.h
+++ b/arch/powerpc/include/asm/eeh.h
@@ -196,7 +196,7 @@ int __init eeh_ops_register(struct eeh_ops *ops);
int __exit eeh_ops_unregister(const char *name);
unsigned long eeh_check_failure(const volatile void __iomem *token,
unsigned long val);
-int eeh_dn_check_failure(struct device_node *dn, struct pci_dev *dev);
+int eeh_dev_check_failure(struct eeh_dev *edev);
void __init pci_addr_cache_build(void);
void eeh_add_device_tree_early(struct device_node *);
void eeh_add_device_tree_late(struct pci_bus *);
@@ -231,10 +231,7 @@ static inline unsigned long eeh_check_failure(const
volatile void __iomem *token
return val;
}
-static inline int eeh_dn_check_failure(struct device_node *dn, struct pci_dev
*dev)
-{
- return 0;
-}
+#define eeh_dev_check_failure(x) (0)
static inline void pci_addr_cache_build(void) { }
diff --git a/arch/powerpc/include/asm/pci-bridge.h
b/arch/powerpc/include/asm/pci-bridge.h
index ac39e6a..f6bd6b2 100644
--- a/arch/powerpc/include/asm/pci-bridge.h
+++ b/arch/powerpc/include/asm/pci-bridge.h
@@ -183,6 +183,8 @@ static inline struct eeh_dev *of_node_to_eeh_dev(struct
device_node *dn)
{
return PCI_DN(dn)-edev;
}
+#else
+#define of_node_to_eeh_dev(x) (NULL)
#endif
/** Find the bus corresponding to the indicated device node */
diff --git a/arch/powerpc/include/asm/ppc-pci.h
b/arch/powerpc/include/asm/ppc-pci.h
index 56d55c7..962a902 100644
--- a/arch/powerpc/include/asm/ppc-pci.h
+++ b/arch/powerpc/include/asm/ppc-pci.h
@@ -50,7 +50,7 @@ extern int rtas_setup_phb(struct pci_controller *phb);
void pci_addr_cache_build(void);
void pci_addr_cache_insert_device(struct pci_dev *dev);
void pci_addr_cache_remove_device(struct pci_dev *dev);
-struct pci_dev *pci_addr_cache_get_device(unsigned long addr);
+struct eeh_dev *pci_addr_cache_get_device(unsigned long addr);
void eeh_slot_error_detail(struct eeh_pe *pe, int severity);
int eeh_pci_enable(struct eeh_pe *pe, int function);
int eeh_reset_pe(struct eeh_pe *);
diff --git a/arch/powerpc/kernel/rtas_pci.c b/arch/powerpc/kernel/rtas_pci.c
index 140735c..6de63e3 100644
--- a/arch/powerpc/kernel/rtas_pci.c
+++ b/arch/powerpc/kernel/rtas_pci.c
@@ -81,7 +81,7 @@ int rtas_read_config(struct pci_dn *pdn, int where, int size,
u32 *val)
return PCIBIOS_DEVICE_NOT_FOUND;
if (returnval == EEH_IO_ERROR_VALUE(size)
- eeh_dn_check_failure (pdn-node, NULL))
+ eeh_dev_check_failure(of_node_to_eeh_dev(pdn-node)))
return PCIBIOS_DEVICE_NOT_FOUND;
return PCIBIOS_SUCCESSFUL;
diff --git a/arch/powerpc/platforms/pseries/eeh.c
b/arch/powerpc/platforms/pseries/eeh.c
index b2caf84..81e8c8e 100644
--- a/arch/powerpc/platforms/pseries/eeh.c
+++ b/arch/powerpc/platforms/pseries/eeh.c
@@ -270,9 +270,8 @@ static inline unsigned long eeh_token_to_phys(unsigned long
token)
}
/**
- * eeh_dn_check_failure - Check if all 1's data is due to EEH slot freeze
- * @dn: device node
- * @dev: pci device, if known
+ * eeh_dev_check_failure - Check if all 1's data is due to EEH slot freeze
+ * @edev: eeh device
*
* Check for an EEH failure for the given device node. Call this
* routine if the result of a read was all 0xff's and you want to
@@ -284,12 +283,13 @@ static inline unsigned long eeh_token_to_phys(unsigned
long token)
*
* It is safe to call this routine in an interrupt context.
*/
-int eeh_dn_check_failure(struct device_node *dn, struct pci_dev *dev)
+int eeh_dev_check_failure(struct eeh_dev *edev)
{
int ret;
unsigned long flags;
+ struct device_node *dn;
+ struct pci_dev *dev;
struct eeh_pe *pe;
- struct eeh_dev *edev;
int rc = 0;
const char *location;
@@ -298,15 +298,12 @@ int eeh_dn_check_failure(struct device_node *dn, struct
pci_dev *dev)
if (!eeh_subsystem_enabled)
return 0;
- if (dn)
