iommu: Convert iommu-caps from define to enum
Allow compile-time type-checking.
Signed-off-by: Joerg Roedel <jroedel@suse.de>
diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index 20f9a52..98fc126 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -57,8 +57,11 @@
struct iommu_domain_geometry geometry;
};
-#define IOMMU_CAP_CACHE_COHERENCY 0x1
-#define IOMMU_CAP_INTR_REMAP 0x2 /* isolates device intrs */
+enum iommu_cap {
+ IOMMU_CAP_CACHE_COHERENCY, /* IOMMU can enforce cache coherent DMA
+ transactions */
+ IOMMU_CAP_INTR_REMAP, /* IOMMU supports interrupt isolation */
+};
/*
* Following constraints are specifc to FSL_PAMUV1:
@@ -155,7 +158,7 @@
size_t size);
extern phys_addr_t iommu_iova_to_phys(struct iommu_domain *domain, dma_addr_t iova);
extern int iommu_domain_has_cap(struct iommu_domain *domain,
- unsigned long cap);
+ enum iommu_cap cap);
extern void iommu_set_fault_handler(struct iommu_domain *domain,
iommu_fault_handler_t handler, void *token);
@@ -305,7 +308,7 @@
}
static inline int iommu_domain_has_cap(struct iommu_domain *domain,
- unsigned long cap)
+ enum iommu_cap cap)
{
return 0;
}