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 <j...@ozlabs.org>
---
arch/powerpc/platforms/cell/iommu.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/arch/powerpc/platforms/cell/iommu.c
b/arch/powerpc/platforms/cell/iommu.c
index faabc3f..6bd4be5 100644
--- a/arch/powerpc/platforms/cell/iommu.c
+++ b/arch/powerpc/platforms/cell/iommu.c
@@ -72,7 +72,7 @@
#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
@@ -242,17 +242,18 @@ 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",
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