diff options
| author | Jia Hongtao <hongtao.jia@freescale.com> | 2013-04-18 09:51:15 (GMT) |
|---|---|---|
| committer | Fleming Andrew-AFLEMING <AFLEMING@freescale.com> | 2013-04-18 21:50:34 (GMT) |
| commit | be3f3a93ea18a4e8db382eb171e02b0349d071f2 (patch) | |
| tree | afbc9df4964e2e2f376639463cd0f5ad4cb83526 /arch/powerpc/sysdev/fsl_pci.h | |
| parent | 51eff26d07e06cb4bb3bad3be3344be2c7e5dc14 (diff) | |
| download | linux-fsl-qoriq-be3f3a93ea18a4e8db382eb171e02b0349d071f2.tar.xz | |
powerpc/85xx: Add machine check handler to fix PCIe erratum on mpc85xx
A PCIe erratum of mpc85xx may causes a core hang when a link of PCIe
goes down. when the link goes down, Non-posted transactions issued
via the ATMU requiring completion result in an instruction stall.
At the same time a machine-check exception is generated to the core
to allow further processing by the handler. We implements the handler
which skips the instruction caused the stall.
This patch depends on patch:
powerpc/85xx: Add platform_device declaration to fsl_pci.h
Signed-off-by: Zhao Chenhui <b35336@freescale.com>
Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Liu Shuo <soniccat.liu@gmail.com>
Signed-off-by: Jia Hongtao <hongtao.jia@freescale.com>
Change-Id: Ie2d8e5db75b242a9687170bc9f7aac53698192c7
Reviewed-on: http://git.am.freescale.net:8181/1525
Reviewed-by: Wood Scott-B07421 <scottwood@freescale.com>
Reviewed-by: Fleming Andrew-AFLEMING <AFLEMING@freescale.com>
Tested-by: Fleming Andrew-AFLEMING <AFLEMING@freescale.com>
Diffstat (limited to 'arch/powerpc/sysdev/fsl_pci.h')
| -rw-r--r-- | arch/powerpc/sysdev/fsl_pci.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/powerpc/sysdev/fsl_pci.h b/arch/powerpc/sysdev/fsl_pci.h index 4854175..a288369 100644 --- a/arch/powerpc/sysdev/fsl_pci.h +++ b/arch/powerpc/sysdev/fsl_pci.h @@ -165,5 +165,11 @@ static inline int mpc85xx_pci_err_probe(struct platform_device *op) } #endif +#ifdef CONFIG_FSL_PCI +extern int fsl_pci_mcheck_exception(struct pt_regs *); +#else +static inline int fsl_pci_mcheck_exception(struct pt_regs *regs) {return 0; } +#endif + #endif /* __POWERPC_FSL_PCI_H */ #endif /* __KERNEL__ */ |