119  * iommu_set_fault_handler() - set a fault handler for an iommu domain
120  * @domain: iommu domain
129 void iommu_set_fault_handler(struct iommu_domain *domain,  in iommu_set_fault_handler()  argument
132 	BUG_ON(!domain);  in iommu_set_fault_handler()
134 	domain->handler = handler;  in iommu_set_fault_handler()
140 	struct iommu_domain *domain;  in iommu_domain_alloc()  local
146 	domain = kzalloc(sizeof(*domain), GFP_KERNEL);  in iommu_domain_alloc()
147 	if (!domain)  in iommu_domain_alloc()
150 	domain->ops = bus->iommu_ops;  in iommu_domain_alloc()
152 	ret = domain->ops->domain_init(domain);  in iommu_domain_alloc()
156 	return domain;  in iommu_domain_alloc()
159 	kfree(domain);  in iommu_domain_alloc()
165 void iommu_domain_free(struct iommu_domain *domain)  in iommu_domain_free()  argument
167 	if (likely(domain->ops->domain_destroy != NULL))  in iommu_domain_free()
168 		domain->ops->domain_destroy(domain);  in iommu_domain_free()
170 	kfree(domain);  in iommu_domain_free()
174 int iommu_attach_device(struct iommu_domain *domain, struct device *dev)  in iommu_attach_device()  argument
176 	if (unlikely(domain->ops->attach_dev == NULL))  in iommu_attach_device()
179 	return domain->ops->attach_dev(domain, dev);  in iommu_attach_device()
183 void iommu_detach_device(struct iommu_domain *domain, struct device *dev)  in iommu_detach_device()  argument
185 	if (unlikely(domain->ops->detach_dev == NULL))  in iommu_detach_device()
188 	domain->ops->detach_dev(domain, dev);  in iommu_detach_device()
192 phys_addr_t iommu_iova_to_phys(struct iommu_domain *domain,  in iommu_iova_to_phys()  argument
195 	if (unlikely(domain->ops->iova_to_phys == NULL))  in iommu_iova_to_phys()
198 	return domain->ops->iova_to_phys(domain, iova);  in iommu_iova_to_phys()
202 int iommu_domain_has_cap(struct iommu_domain *domain,  in iommu_domain_has_cap()  argument
205 	if (unlikely(domain->ops->domain_has_cap == NULL))  in iommu_domain_has_cap()
208 	return domain->ops->domain_has_cap(domain, cap);  in iommu_domain_has_cap()
212 int iommu_map(struct iommu_domain *domain, unsigned long iova,  in iommu_map()  argument
220 	if (unlikely(domain->ops->map == NULL))  in iommu_map()
224 	min_pagesz = 1 << __ffs(domain->ops->pgsize_bitmap);  in iommu_map()
260 		pgsize &= domain->ops->pgsize_bitmap;  in iommu_map()
272 		ret = domain->ops->map(domain, iova, paddr, pgsize, prot);  in iommu_map()
283 		iommu_unmap(domain, orig_iova, orig_size - size);  in iommu_map()
289 size_t iommu_unmap(struct iommu_domain *domain, unsigned long iova, size_t size)  in iommu_unmap()  argument
294 	if (unlikely(domain->ops->unmap == NULL))  in iommu_unmap()
298 	min_pagesz = 1 << __ffs(domain->ops->pgsize_bitmap);  in iommu_unmap()
321 		unmapped_page = domain->ops->unmap(domain, iova, left);  in iommu_unmap()