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powerpc/85xx: workaround for chips with MSI hardware errata

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The MPIC version 2.0 has a MSI errata (errata PIC1 of mpc8544), It causes
that neither MSI nor MSI-X can work fine. This is a workaround to allow
MSI-X to function properly.

Signed-off-by: Liu Shuo <soniccat.liu@gmail.com>
Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Jia Hongtao <hongtao.jia@freescale.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
This commit is contained in:
Hongtao Jia
2015-02-26 15:23:08 +08:00
committed by Scott Wood
parent 807d38b73b
commit ff015659b6
2 changed files with 28 additions and 3 deletions
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2
arch/powerpc/sysdev/fsl_msi.h
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@@ -27,6 +27,8 @@
#define FSL_PIC_IP_IPIC 0x00000002
#define FSL_PIC_IP_VMPIC 0x00000003
#define MSI_HW_ERRATA_ENDIAN 0x00000010
struct fsl_msi_cascade_data;
struct fsl_msi {