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powerpc/eeh: EEH post initialization operation

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The patch adds new EEH operation post_init. It's used to notify
the platform that EEH core has completed the EEH probe. By that,
PowerNV platform starts to use the services supplied by EEH
functionality.

Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Gavin Shan 2013-06-20 13:20:57 +08:00 committed by Benjamin Herrenschmidt
parent 51fb5f5632
commit 21fd21f590
2 changed files with 12 additions and 0 deletions
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1
arch/powerpc/include/asm/eeh.h
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@ -131,6 +131,7 @@ static inline struct pci_dev *eeh_dev_to_pci_dev(struct eeh_dev *edev)
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);
int (*set_option)(struct eeh_pe *pe, int option);

11
arch/powerpc/kernel/eeh.c
View File

@ -720,6 +720,17 @@ int __init eeh_init(void)
return -EINVAL;
}
/*
* Call platform post-initialization. Actually, It's good chance
* to inform platform that EEH is ready to supply service if the
* I/O cache stuff has been built up.
*/
if (eeh_ops->post_init) {
ret = eeh_ops->post_init();
if (ret)
return ret;
}
if (eeh_subsystem_enabled)
pr_info("EEH: PCI Enhanced I/O Error Handling Enabled\n");
else