diff options
| -rw-r--r-- | drivers/iommu/iommu.c | 14 | ||||
| -rw-r--r-- | include/linux/iommu.h | 6 |
2 files changed, 20 insertions, 0 deletions
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 8b9ded88e6f5..fe1ae51e0f14 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -192,6 +192,20 @@ void iommu_detach_device(struct iommu_domain *domain, struct device *dev) } EXPORT_SYMBOL_GPL(iommu_detach_device); +void iommu_domain_activate(struct iommu_domain *domain) +{ + if (likely(domain->ops->domain_activate != NULL)) + domain->ops->domain_activate(domain); +} +EXPORT_SYMBOL_GPL(iommu_domain_activate); + +void iommu_domain_idle(struct iommu_domain *domain) +{ + if (likely(domain->ops->domain_idle != NULL)) + domain->ops->domain_idle(domain); +} +EXPORT_SYMBOL_GPL(iommu_domain_idle); + phys_addr_t iommu_iova_to_phys(struct iommu_domain *domain, unsigned long iova) { diff --git a/include/linux/iommu.h b/include/linux/iommu.h index eb72d3b890e9..0f3f36f4420c 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -55,6 +55,8 @@ struct iommu_domain { * @domain_destroy: destroy iommu domain * @attach_dev: attach device to an iommu domain * @detach_dev: detach device from an iommu domain + * @domain_activate: enable iommu pm domain and restore configuration registers + * @domain_idle: save iommu configuration registers and idle pm domain * @map: map a physically contiguous memory region to an iommu domain * @unmap: unmap a physically contiguous memory region from an iommu domain * @iova_to_phys: translate iova to physical address @@ -67,6 +69,8 @@ struct iommu_ops { void (*domain_destroy)(struct iommu_domain *domain); int (*attach_dev)(struct iommu_domain *domain, struct device *dev); void (*detach_dev)(struct iommu_domain *domain, struct device *dev); + void (*domain_activate)(struct iommu_domain *domain); + void (*domain_idle)(struct iommu_domain *domain); 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, @@ -87,6 +91,8 @@ extern int iommu_attach_device(struct iommu_domain *domain, struct device *dev); extern void iommu_detach_device(struct iommu_domain *domain, struct device *dev); +extern void iommu_domain_activate(struct iommu_domain *domain); +extern void iommu_domain_idle(struct iommu_domain *domain); extern int iommu_map(struct iommu_domain *domain, unsigned long iova, phys_addr_t paddr, size_t size, int prot); extern size_t iommu_unmap(struct iommu_domain *domain, unsigned long iova, |