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powerpc/eeh: Do probe on pci_dn

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Originally, EEH core probes on device_node or pci_dev to populate
EEH devices and PEs, which conflicts with the fact: SRIOV VFs are
usually enabled and created by PF's driver and they don't have the
corresponding device_nodes. Instead, SRIOV VFs have dynamically
created pci_dn, which can be used for EEH probe.

The patch reworks EEH probe for PowerNV and pSeries platforms to
do probing based on pci_dn, instead of pci_dev or device_node any
more.

Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Gavin Shan
2015-03-17 16:15:06 +11:00
committed by Benjamin Herrenschmidt
parent e8e9b34cef
commit ff57b454dd
8 changed files with 172 additions and 138 deletions
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11
arch/powerpc/include/asm/eeh.h
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@@ -207,8 +207,7 @@ struct eeh_ops {
char *name;
int (*init)(void);
int (*post_init)(void);
void* (*of_probe)(struct device_node *dn, void *flag);
int (*dev_probe)(struct pci_dev *dev, void *flag);
void* (*probe)(struct pci_dn *pdn, void *data);
int (*set_option)(struct eeh_pe *pe, int option);
int (*get_pe_addr)(struct eeh_pe *pe);
int (*get_state)(struct eeh_pe *pe, int *state);
@@ -287,8 +286,8 @@ int __exit eeh_ops_unregister(const char *name);
int eeh_check_failure(const volatile void __iomem *token);
int eeh_dev_check_failure(struct eeh_dev *edev);
void eeh_addr_cache_build(void);
void eeh_add_device_early(struct device_node *);
void eeh_add_device_tree_early(struct device_node *);
void eeh_add_device_early(struct pci_dn *);
void eeh_add_device_tree_early(struct pci_dn *);
void eeh_add_device_late(struct pci_dev *);
void eeh_add_device_tree_late(struct pci_bus *);
void eeh_add_sysfs_files(struct pci_bus *);
@@ -346,9 +345,9 @@ static inline int eeh_check_failure(const volatile void __iomem *token)
static inline void eeh_addr_cache_build(void) { }
static inline void eeh_add_device_early(struct device_node *dn) { }
static inline void eeh_add_device_early(struct pci_dn *pdn) { }
static inline void eeh_add_device_tree_early(struct device_node *dn) { }
static inline void eeh_add_device_tree_early(struct pci_dn *pdn) { }
static inline void eeh_add_device_late(struct pci_dev *dev) { }