参照元

説明

参考

$ egrep -r 'struct iommu_ops [^*]' . | grep '='
drivers/iommu/msm_iommu.c:static const struct iommu_ops msm_iommu_ops = {
drivers/iommu/omap-iommu.c:static const struct iommu_ops omap_iommu_ops = {
drivers/iommu/exynos-iommu.c:static struct iommu_ops exynos_iommu_ops = {
drivers/iommu/arm-smmu-v3.c:static struct iommu_ops arm_smmu_ops = {
drivers/iommu/s390-iommu.c:static struct iommu_ops s390_iommu_ops = {
drivers/iommu/amd_iommu.c:static const struct iommu_ops amd_iommu_ops = {
drivers/iommu/tegra-gart.c:static const struct iommu_ops gart_iommu_ops = {
drivers/iommu/arm-smmu.c:static struct iommu_ops arm_smmu_ops = {
drivers/iommu/tegra-smmu.c:static const struct iommu_ops tegra_smmu_ops = {
drivers/iommu/intel-iommu.c:static const struct iommu_ops intel_iommu_ops = {
drivers/iommu/rockchip-iommu.c:static const struct iommu_ops rk_iommu_ops = {
drivers/iommu/ipmmu-vmsa.c:static const struct iommu_ops ipmmu_ops = {
drivers/iommu/shmobile-iommu.c:static const struct iommu_ops shmobile_iommu_ops = {
drivers/iommu/fsl_pamu_domain.c:static const struct iommu_ops fsl_pamu_ops = {

実装

/**
 * 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);
	/* Domain allocation and freeing by the iommu driver */
	struct iommu_domain *(*domain_alloc)(unsigned iommu_domain_type);
	void (*domain_free)(struct iommu_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, 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);
	phys_addr_t (*iova_to_phys)(struct iommu_domain *domain, dma_addr_t iova);
	int (*add_device)(struct device *dev);
	void (*remove_device)(struct device *dev);
	struct iommu_group *(*device_group)(struct device *dev);
	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);
	/* 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);
	/* 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
	int (*of_xlate)(struct device *dev, struct of_phandle_args *args);
#endif

	unsigned long pgsize_bitmap;
	void *priv;
};

コメント


トップ   編集 凍結 差分 履歴 添付 複製 名前変更 リロード   新規 一覧 検索 最終更新   ヘルプ   最終更新のRSS
Last-modified: 2017-11-28 (火) 16:23:08