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iommu/vt-d: Clear PPR bit to ensure we get more page request interrupts
[firefly-linux-kernel-4.4.55.git]
/
include
/
linux
/
intel-iommu.h
diff --git
a/include/linux/intel-iommu.h
b/include/linux/intel-iommu.h
index 821273ca4873b147136f46f235d83b344b192373..2d9b650047a5b96582f66dff2b2581cce97c2b65 100644
(file)
--- a/
include/linux/intel-iommu.h
+++ b/
include/linux/intel-iommu.h
@@
-235,6
+235,9
@@
static inline void dmar_writeq(void __iomem *addr, u64 val)
/* low 64 bit */
#define dma_frcd_page_addr(d) (d & (((u64)-1) << PAGE_SHIFT))
+/* PRS_REG */
+#define DMA_PRS_PPR ((u32)1)
+
#define IOMMU_WAIT_OP(iommu, offset, op, cond, sts) \
do { \
cycles_t start_time = get_cycles(); \