drivers/iommu/iommu-priv.h

Source file repositories/reference/linux-study-clean/drivers/iommu/iommu-priv.h

File Facts

System
Linux kernel
Corpus path
drivers/iommu/iommu-priv.h
Extension
.h
Size
3992 bytes
Lines
127
Domain
Driver Families
Bucket
drivers/iommu
Inferred role
Driver Families: operation-table or driver-model contract
Status
pattern implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

const struct bus_type *bus,
			      struct notifier_block *nb);
void iommu_device_unregister_bus(struct iommu_device *iommu,
				 const struct bus_type *bus,
				 struct notifier_block *nb);

int iommu_mock_device_add(struct device *dev, struct iommu_device *iommu);

struct iommu_attach_handle *iommu_attach_handle_get(struct iommu_group *group,
						    ioasid_t pasid,
						    unsigned int type);
int iommu_attach_group_handle(struct iommu_domain *domain,
			      struct iommu_group *group,
			      struct iommu_attach_handle *handle);
void iommu_detach_group_handle(struct iommu_domain *domain,
			       struct iommu_group *group);
int iommu_replace_group_handle(struct iommu_group *group,
			       struct iommu_domain *new_domain,
			       struct iommu_attach_handle *handle);

#if IS_ENABLED(CONFIG_IOMMUFD_DRIVER_CORE) && IS_ENABLED(CONFIG_IRQ_MSI_IOMMU)
int iommufd_sw_msi(struct iommu_domain *domain, struct msi_desc *desc,
		   phys_addr_t msi_addr);
#else /* !CONFIG_IOMMUFD_DRIVER_CORE || !CONFIG_IRQ_MSI_IOMMU */
static inline int iommufd_sw_msi(struct iommu_domain *domain,
				 struct msi_desc *desc, phys_addr_t msi_addr)
{
	return -EOPNOTSUPP;
}
#endif /* CONFIG_IOMMUFD_DRIVER_CORE && CONFIG_IRQ_MSI_IOMMU */

int iommu_replace_device_pasid(struct iommu_domain *domain,
			       struct device *dev, ioasid_t pasid,
			       struct iommu_attach_handle *handle);

#ifdef CONFIG_IOMMU_DEBUG_PAGEALLOC

void __iommu_debug_map(struct iommu_domain *domain, phys_addr_t phys,
		       size_t size);
void __iommu_debug_unmap_begin(struct iommu_domain *domain,
			       unsigned long iova, size_t size);
void __iommu_debug_unmap_end(struct iommu_domain *domain,
			     unsigned long iova, size_t size, size_t unmapped);

static inline void iommu_debug_map(struct iommu_domain *domain,
				   phys_addr_t phys, size_t size)
{
	if (static_branch_unlikely(&iommu_debug_initialized))
		__iommu_debug_map(domain, phys, size);
}

static inline void iommu_debug_unmap_begin(struct iommu_domain *domain,
					   unsigned long iova, size_t size)
{
	if (static_branch_unlikely(&iommu_debug_initialized))
		__iommu_debug_unmap_begin(domain, iova, size);
}

static inline void iommu_debug_unmap_end(struct iommu_domain *domain,
					 unsigned long iova, size_t size,
					 size_t unmapped)
{
	if (static_branch_unlikely(&iommu_debug_initialized))
		__iommu_debug_unmap_end(domain, iova, size, unmapped);
}

void iommu_debug_init(void);

#else
static inline void iommu_debug_map(struct iommu_domain *domain,
				   phys_addr_t phys, size_t size)
{
}

static inline void iommu_debug_unmap_begin(struct iommu_domain *domain,
					   unsigned long iova, size_t size)
{
}

static inline void iommu_debug_unmap_end(struct iommu_domain *domain,
					 unsigned long iova, size_t size,
					 size_t unmapped)
{
}

static inline void iommu_debug_init(void)
{
}

#endif /* CONFIG_IOMMU_DEBUG_PAGEALLOC */

Annotation

Implementation Notes