#define IOMMU_WRITE (2)
#define IOMMU_CACHE (4) /* DMA cache coherency */
+struct iommu_ops;
+struct bus_type;
struct device;
struct iommu_domain {
+ struct iommu_ops *ops;
void *priv;
};
#define IOMMU_CAP_CACHE_COHERENCY 0x1
#define IOMMU_CAP_INTR_REMAP 0x2 /* isolates device intrs */
+#ifdef CONFIG_IOMMU_API
+
struct iommu_ops {
int (*domain_init)(struct iommu_domain *domain);
void (*domain_destroy)(struct iommu_domain *domain);
unsigned long cap);
};
-#ifdef CONFIG_IOMMU_API
-
extern void register_iommu(struct iommu_ops *ops);
-extern bool iommu_found(void);
-extern struct iommu_domain *iommu_domain_alloc(void);
+extern int bus_set_iommu(struct bus_type *bus, struct iommu_ops *ops);
+extern bool iommu_present(struct bus_type *bus);
+extern struct iommu_domain *iommu_domain_alloc(struct bus_type *bus);
extern void iommu_domain_free(struct iommu_domain *domain);
extern int iommu_attach_device(struct iommu_domain *domain,
struct device *dev);
#else /* CONFIG_IOMMU_API */
-static inline void register_iommu(struct iommu_ops *ops)
-{
-}
+struct iommu_ops {};
-static inline bool iommu_found(void)
+static inline bool iommu_present(struct bus_type *bus)
{
return false;
}
-static inline struct iommu_domain *iommu_domain_alloc(void)
+static inline struct iommu_domain *iommu_domain_alloc(struct bus_type *bus)
{
return NULL;
}