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powerpc/eeh: pseries platform EEH wait PE state

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On pSeries platform, the PE state might be temporarily unavailable.
In that case, the firmware will return the corresponding wait time.
That means the kernel has to wait for appropriate time in order to
get the PE state.

The patch does the implementation for that. Besides, the function
has been abstracted through struct eeh_ops::wait_state so that EEH core
components could support multiple platforms in future.

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
2012-02-27 20:03:58 +00:00
committed by Benjamin Herrenschmidt
parent eb594a4754
commit b0e5f742f1
4 changed files with 49 additions and 47 deletions
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1
arch/powerpc/include/asm/ppc-pci.h
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@@ -58,7 +58,6 @@ struct pci_dev *pci_get_device_by_addr(unsigned long addr);
void eeh_slot_error_detail (struct pci_dn *pdn, int severity);
int eeh_pci_enable(struct pci_dn *pdn, int function);
int eeh_reset_pe(struct pci_dn *);
int eeh_wait_for_slot_status(struct pci_dn *pdn, int max_wait_msecs);
void eeh_restore_bars(struct pci_dn *);
void eeh_configure_bridge(struct pci_dn *);
int rtas_write_config(struct pci_dn *, int where, int size, u32 val);