| /* |
| * Copyright (c) 2017, The Linux Foundation. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 and |
| * only version 2 as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| */ |
| |
| #ifndef __ARM_SMMU_ERRATA_H__ |
| #define __ARM_SMMU_ERRATA_H__ |
| |
| #define ARM_SMMU_MIN_IOVA_ALIGN SZ_16K |
| #define ARM_SMMU_GUARD_PROT (IOMMU_READ | IOMMU_WRITE | IOMMU_GUARD) |
| |
| #ifdef CONFIG_ARM_SMMU |
| |
| struct page *arm_smmu_errata_get_guard_page(int vmid); |
| #else |
| |
| static inline struct page *arm_smmu_errata_get_guard_page( |
| int vmid) |
| { |
| return NULL; |
| } |
| #endif |
| #endif |