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| author | Jeremy Kerr <jk@ozlabs.org> | 2009-03-19 16:46:35 +0000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-03-24 13:47:32 +1100 |
| commit | 2a7d55fda58eb4e3652252d4f71222bd1ff90c5e (patch) | |
| tree | 7c6fd2b80064ca8e80b1770034dcdcbb616a3de5 /arch/powerpc/platforms/cell/iommu.c | |
| parent | 2319f1239592d0de80414ad2338c2bd7384a2a41 (diff) | |
| download | linux-2a7d55fda58eb4e3652252d4f71222bd1ff90c5e.tar.gz linux-2a7d55fda58eb4e3652252d4f71222bd1ff90c5e.tar.bz2 linux-2a7d55fda58eb4e3652252d4f71222bd1ff90c5e.zip | |
powerpc/cell: Fix iommu exception reporting
Currently, we will report a page fault as a segment fault, and report
a segment fault as both a page and segment fault.
Fix the SPF_P definition to be correct according to the iommu docs, and
mask before comparing.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/platforms/cell/iommu.c')
| -rw-r--r-- | arch/powerpc/platforms/cell/iommu.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/arch/powerpc/platforms/cell/iommu.c b/arch/powerpc/platforms/cell/iommu.c index ee5033eddf01..5744527a7f2a 100644 --- a/arch/powerpc/platforms/cell/iommu.c +++ b/arch/powerpc/platforms/cell/iommu.c @@ -74,7 +74,7 @@ #define IOC_IO_ExcpStat_V 0x8000000000000000ul #define IOC_IO_ExcpStat_SPF_Mask 0x6000000000000000ul #define IOC_IO_ExcpStat_SPF_S 0x6000000000000000ul -#define IOC_IO_ExcpStat_SPF_P 0x4000000000000000ul +#define IOC_IO_ExcpStat_SPF_P 0x2000000000000000ul #define IOC_IO_ExcpStat_ADDR_Mask 0x00000007fffff000ul #define IOC_IO_ExcpStat_RW_Mask 0x0000000000000800ul #define IOC_IO_ExcpStat_IOID_Mask 0x00000000000007fful @@ -247,17 +247,18 @@ static void tce_free_cell(struct iommu_table *tbl, long index, long npages) static irqreturn_t ioc_interrupt(int irq, void *data) { - unsigned long stat; + unsigned long stat, spf; struct cbe_iommu *iommu = data; stat = in_be64(iommu->xlate_regs + IOC_IO_ExcpStat); + spf = stat & IOC_IO_ExcpStat_SPF_Mask; /* Might want to rate limit it */ printk(KERN_ERR "iommu: DMA exception 0x%016lx\n", stat); printk(KERN_ERR " V=%d, SPF=[%c%c], RW=%s, IOID=0x%04x\n", !!(stat & IOC_IO_ExcpStat_V), - (stat & IOC_IO_ExcpStat_SPF_S) ? 'S' : ' ', - (stat & IOC_IO_ExcpStat_SPF_P) ? 'P' : ' ', + (spf == IOC_IO_ExcpStat_SPF_S) ? 'S' : ' ', + (spf == IOC_IO_ExcpStat_SPF_P) ? 'P' : ' ', (stat & IOC_IO_ExcpStat_RW_Mask) ? "Read" : "Write", (unsigned int)(stat & IOC_IO_ExcpStat_IOID_Mask)); printk(KERN_ERR " page=0x%016lx\n", |