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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2013-05-10 06:59:18 (GMT) |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2013-05-10 06:59:18 (GMT) |
| commit | 73ed148aea9dc0508be7e30e7a447f55c1b2f378 (patch) | |
| tree | 2571b5d1851a9f2bef62e92def3608f738748251 /arch/powerpc/platforms/powernv/pci.h | |
| parent | 1de1455f33709a8afd8d41d26d09739a1148105b (diff) | |
| download | linux-fsl-qoriq-73ed148aea9dc0508be7e30e7a447f55c1b2f378.tar.xz | |
powerpc/powernv: Improve kexec reliability
We add a machine_shutdown hook that frees the OPAL interrupts
(so they get masked at the source and don't fire while kexec'ing)
and which triggers an IODA reset on all the PCIe host bridges
which will have the effect of blocking all DMAs and subsequent
PCIs interrupts.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/platforms/powernv/pci.h')
| -rw-r--r-- | arch/powerpc/platforms/powernv/pci.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/powernv/pci.h b/arch/powerpc/platforms/powernv/pci.h index 48dc4bb..25d76c4 100644 --- a/arch/powerpc/platforms/powernv/pci.h +++ b/arch/powerpc/platforms/powernv/pci.h @@ -86,6 +86,7 @@ struct pnv_phb { void (*dma_dev_setup)(struct pnv_phb *phb, struct pci_dev *pdev); void (*fixup_phb)(struct pci_controller *hose); u32 (*bdfn_to_pe)(struct pnv_phb *phb, struct pci_bus *bus, u32 devfn); + void (*shutdown)(struct pnv_phb *phb); union { struct { @@ -158,4 +159,5 @@ extern void pnv_pci_init_ioda_hub(struct device_node *np); extern void pnv_pci_init_ioda2_phb(struct device_node *np); extern void pnv_pci_ioda_tce_invalidate(struct iommu_table *tbl, u64 *startp, u64 *endp); + #endif /* __POWERNV_PCI_H */ |