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-rw-r--r--include/linux/iommu.h33
1 files changed, 27 insertions, 6 deletions
diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index 432acc4c054..d937580417b 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -48,19 +48,34 @@ struct iommu_domain {
#ifdef CONFIG_IOMMU_API
+/**
+ * struct iommu_ops - iommu ops and capabilities
+ * @domain_init: init iommu domain
+ * @domain_destroy: destroy iommu domain
+ * @attach_dev: attach device to an iommu domain
+ * @detach_dev: detach device from an iommu domain
+ * @map: map a physically contiguous memory region to an iommu domain
+ * @unmap: unmap a physically contiguous memory region from an iommu domain
+ * @iova_to_phys: translate iova to physical address
+ * @domain_has_cap: domain capabilities query
+ * @commit: commit iommu domain
+ * @pgsize_bitmap: bitmap of supported page sizes
+ */
struct iommu_ops {
int (*domain_init)(struct iommu_domain *domain);
void (*domain_destroy)(struct iommu_domain *domain);
int (*attach_dev)(struct iommu_domain *domain, struct device *dev);
void (*detach_dev)(struct iommu_domain *domain, struct device *dev);
int (*map)(struct iommu_domain *domain, unsigned long iova,
- phys_addr_t paddr, int gfp_order, int prot);
- int (*unmap)(struct iommu_domain *domain, unsigned long iova,
- int gfp_order);
+ phys_addr_t paddr, size_t size, int prot);
+ size_t (*unmap)(struct iommu_domain *domain, unsigned long iova,
+ size_t size);
phys_addr_t (*iova_to_phys)(struct iommu_domain *domain,
unsigned long iova);
int (*domain_has_cap)(struct iommu_domain *domain,
unsigned long cap);
+ int (*device_group)(struct device *dev, unsigned int *groupid);
+ unsigned long pgsize_bitmap;
};
extern int bus_set_iommu(struct bus_type *bus, struct iommu_ops *ops);
@@ -72,15 +87,16 @@ extern int iommu_attach_device(struct iommu_domain *domain,
extern void iommu_detach_device(struct iommu_domain *domain,
struct device *dev);
extern int iommu_map(struct iommu_domain *domain, unsigned long iova,
- phys_addr_t paddr, int gfp_order, int prot);
-extern int iommu_unmap(struct iommu_domain *domain, unsigned long iova,
- int gfp_order);
+ phys_addr_t paddr, size_t size, int prot);
+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,
unsigned long iova);
extern int iommu_domain_has_cap(struct iommu_domain *domain,
unsigned long cap);
extern void iommu_set_fault_handler(struct iommu_domain *domain,
iommu_fault_handler_t handler);
+extern int iommu_device_group(struct device *dev, unsigned int *groupid);
/**
* report_iommu_fault() - report about an IOMMU fault to the IOMMU framework
@@ -179,6 +195,11 @@ static inline void iommu_set_fault_handler(struct iommu_domain *domain,
{
}
+static inline int iommu_device_group(struct device *dev, unsigned int *groupid)
+{
+ return -ENODEV;
+}
+
#endif /* CONFIG_IOMMU_API */
#endif /* __LINUX_IOMMU_H */