diff options
Diffstat (limited to 'include/linux/iommu.h')
| -rw-r--r-- | include/linux/iommu.h | 33 |
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 */ |