*参照元 [#j02ed86a] #backlinks *説明 [#v9c36bc6] -パス: [[linux-4.4.1/include/linux/iommu.h]] -FIXME: これは何? --説明 **参考 [#n29a51b5] *実装 [#n9a339a2] /** * 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 * @map_sg: map a scatter-gather list of physically contiguous memory chunks * to an iommu domain * @iova_to_phys: translate iova to physical address * @add_device: add device to iommu grouping * @remove_device: remove device from iommu grouping * @domain_get_attr: Query domain attributes * @domain_set_attr: Change domain attributes * @of_xlate: add OF master IDs to iommu grouping * @pgsize_bitmap: bitmap of supported page sizes * @priv: per-instance data private to the iommu driver */ struct iommu_ops { bool (*capable)(enum iommu_cap); - --[[linux-4.4.1/iommu_cap]] /* Domain allocation and freeing by the iommu driver */ struct iommu_domain *(*domain_alloc)(unsigned iommu_domain_type); void (*domain_free)(struct iommu_domain *); - --[[linux-4.4.1/iommu_domain]] int (*attach_dev)(struct iommu_domain *domain, struct device *dev); void (*detach_dev)(struct iommu_domain *domain, struct device *dev); - --[[linux-4.4.1/device]] int (*map)(struct iommu_domain *domain, unsigned long iova, phys_addr_t paddr, size_t size, int prot); size_t (*unmap)(struct iommu_domain *domain, unsigned long iova, size_t size); size_t (*map_sg)(struct iommu_domain *domain, unsigned long iova, struct scatterlist *sg, unsigned int nents, int prot); - --[[linux-4.4.1/phys_addr_t]] --[[linux-4.4.1/scatterlist]] phys_addr_t (*iova_to_phys)(struct iommu_domain *domain, dma_addr_t iova); - --[[linux-4.4.1/dma_addr_t]] int (*add_device)(struct device *dev); void (*remove_device)(struct device *dev); struct iommu_group *(*device_group)(struct device *dev); - --[[linux-4.4.1/iommu_group]] int (*domain_get_attr)(struct iommu_domain *domain, enum iommu_attr attr, void *data); int (*domain_set_attr)(struct iommu_domain *domain, enum iommu_attr attr, void *data); - --[[linux-4.4.1/iommu_attr]] /* Request/Free a list of direct mapping requirements for a device */ void (*get_dm_regions)(struct device *dev, struct list_head *list); void (*put_dm_regions)(struct device *dev, struct list_head *list); - --[[linux-4.4.1/list_head]] /* Window handling functions */ int (*domain_window_enable)(struct iommu_domain *domain, u32 wnd_nr, phys_addr_t paddr, u64 size, int prot); void (*domain_window_disable)(struct iommu_domain *domain, u32 wnd_nr); /* Set the numer of window per domain */ int (*domain_set_windows)(struct iommu_domain *domain, u32 w_count); /* Get the numer of window per domain */ u32 (*domain_get_windows)(struct iommu_domain *domain); #ifdef CONFIG_OF_IOMMU - --[[linux-4.4.1/CONFIG_OF_IOMMU]] int (*of_xlate)(struct device *dev, struct of_phandle_args *args); - --[[linux-4.4.1/of_phandle_args]] #endif unsigned long pgsize_bitmap; void *priv; }; *コメント [#da17bbcf]