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iommu: Convert iommu-caps from define to enum 

Allow compile-time type-checking.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
hifive-unleashed-5.1
Joerg Roedel 2014-09-03 18:34:04 +02:00
parent 0f33be009b
commit 1aed074869
2 changed files with 8 additions and 5 deletions
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2
drivers/iommu/iommu.c
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@ -948,7 +948,7 @@ phys_addr_t iommu_iova_to_phys(struct iommu_domain *domain, dma_addr_t iova)
EXPORT_SYMBOL_GPL(iommu_iova_to_phys);
int iommu_domain_has_cap(struct iommu_domain *domain,
unsigned long cap)
enum iommu_cap cap)
{
if (unlikely(domain->ops->domain_has_cap == NULL))
return 0;

11
include/linux/iommu.h
View File

@ -57,8 +57,11 @@ struct iommu_domain {
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 @@ extern size_t iommu_unmap(struct iommu_domain *domain, unsigned long iova,
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 phys_addr_t iommu_iova_to_phys(struct iommu_domain *domain, dma_ad
}
static inline int iommu_domain_has_cap(struct iommu_domain *domain,
unsigned long cap)
enum iommu_cap cap)
{
return 0;
}