drivers/iommu/iommu-sva.c

73 	struct iommu_domain *domain;
93 		if (attach_handle->domain->mm != mm) {
113 	/* Search for an existing domain. */
114 	list_for_each_entry(domain, &mm->iommu_mm->sva_domains, next) {
115 		ret = iommu_attach_device_pasid(domain, dev, iommu_mm->pasid,
118 			domain->users++;
123 	/* Allocate a new domain and set it on device pasid. */
124 	domain = iommu_sva_domain_alloc(dev, mm);
125 	if (IS_ERR(domain)) {
126 		ret = PTR_ERR(domain);
130 	ret = iommu_attach_device_pasid(domain, dev, iommu_mm->pasid,
134 	domain->users = 1;
135 	list_add(&domain->next, &mm->iommu_mm->sva_domains);
144 	iommu_domain_free(domain);
163 	struct iommu_domain *domain = handle->handle.domain;
164 	struct iommu_mm_data *iommu_mm = domain->mm->iommu_mm;
173 	iommu_detach_device_pasid(domain, dev, iommu_mm->pasid);
174 	if (--domain->users == 0) {
175 		list_del(&domain->next);
176 		iommu_domain_free(domain);
185 	struct iommu_domain *domain = handle->handle.domain;
187 	return mm_get_enqcmd_pasid(domain->mm);
275 					     group->attach_handle->domain->mm);
297 	struct iommu_domain *domain;
302 	domain = ops->domain_alloc_sva(dev, mm);
303 	if (IS_ERR(domain))
304 		return domain;
306 	domain->type = IOMMU_DOMAIN_SVA;
307 	domain->cookie_type = IOMMU_COOKIE_SVA;
309 	domain->mm = mm;
310 	domain->owner = ops;
311 	domain->iopf_handler = iommu_sva_iopf_handler;
313 	return domain;