iommu: Add DOMAIN_ATTR_WINDOWS domain attribute

[firefly-linux-kernel-4.4.55.git] / include / linux / iommu.h

diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index 5ea3d725091746374c6d4dc5d29616700c8f5fe7..ba3b8a98a0499abcb4b24eff5d8e1201c2215d4e 100644 (file)
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -60,6 +60,7 @@ struct iommu_domain {
 enum iommu_attr {
        DOMAIN_ATTR_GEOMETRY,
        DOMAIN_ATTR_PAGING,
+       DOMAIN_ATTR_WINDOWS,
        DOMAIN_ATTR_MAX,
 };
 
@@ -106,6 +107,10 @@ struct iommu_ops {
        int (*domain_window_enable)(struct iommu_domain *domain, u32 wnd_nr,
                                    phys_addr_t paddr, u64 size);
        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);
 
        unsigned long pgsize_bitmap;
 };