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Diffstat (limited to 'include/linux/dma-iommu.h')
| -rw-r--r-- | include/linux/dma-iommu.h | 112 |
1 files changed, 0 insertions, 112 deletions
diff --git a/include/linux/dma-iommu.h b/include/linux/dma-iommu.h deleted file mode 100644 index e760dc5d1fa8..000000000000 --- a/include/linux/dma-iommu.h +++ /dev/null @@ -1,112 +0,0 @@ -/* - * Copyright (C) 2014-2015 ARM Ltd. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License 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. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - */ -#ifndef __DMA_IOMMU_H -#define __DMA_IOMMU_H - -#ifdef __KERNEL__ -#include <linux/types.h> -#include <asm/errno.h> - -#ifdef CONFIG_IOMMU_DMA -#include <linux/dma-mapping.h> -#include <linux/iommu.h> -#include <linux/msi.h> - -int iommu_dma_init(void); - -/* Domain management interface for IOMMU drivers */ -int iommu_get_dma_cookie(struct iommu_domain *domain); -int iommu_get_msi_cookie(struct iommu_domain *domain, dma_addr_t base); -void iommu_put_dma_cookie(struct iommu_domain *domain); - -/* Setup call for arch DMA mapping code */ -int iommu_dma_init_domain(struct iommu_domain *domain, dma_addr_t base, - u64 size, struct device *dev); - -/* General helpers for DMA-API <-> IOMMU-API interaction */ -int dma_info_to_prot(enum dma_data_direction dir, bool coherent, - unsigned long attrs); - -/* - * These implement the bulk of the relevant DMA mapping callbacks, but require - * the arch code to take care of attributes and cache maintenance - */ -struct page **iommu_dma_alloc(struct device *dev, size_t size, gfp_t gfp, - unsigned long attrs, int prot, dma_addr_t *handle, - void (*flush_page)(struct device *, const void *, phys_addr_t)); -void iommu_dma_free(struct device *dev, struct page **pages, size_t size, - dma_addr_t *handle); - -int iommu_dma_mmap(struct page **pages, size_t size, struct vm_area_struct *vma); - -dma_addr_t iommu_dma_map_page(struct device *dev, struct page *page, - unsigned long offset, size_t size, int prot); -int iommu_dma_map_sg(struct device *dev, struct scatterlist *sg, - int nents, int prot); - -/* - * Arch code with no special attribute handling may use these - * directly as DMA mapping callbacks for simplicity - */ -void iommu_dma_unmap_page(struct device *dev, dma_addr_t handle, size_t size, - enum dma_data_direction dir, unsigned long attrs); -void iommu_dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nents, - enum dma_data_direction dir, unsigned long attrs); -dma_addr_t iommu_dma_map_resource(struct device *dev, phys_addr_t phys, - size_t size, enum dma_data_direction dir, unsigned long attrs); -void iommu_dma_unmap_resource(struct device *dev, dma_addr_t handle, - size_t size, enum dma_data_direction dir, unsigned long attrs); - -/* The DMA API isn't _quite_ the whole story, though... */ -void iommu_dma_map_msi_msg(int irq, struct msi_msg *msg); -void iommu_dma_get_resv_regions(struct device *dev, struct list_head *list); - -#else - -struct iommu_domain; -struct msi_msg; -struct device; - -static inline int iommu_dma_init(void) -{ - return 0; -} - -static inline int iommu_get_dma_cookie(struct iommu_domain *domain) -{ - return -ENODEV; -} - -static inline int iommu_get_msi_cookie(struct iommu_domain *domain, dma_addr_t base) -{ - return -ENODEV; -} - -static inline void iommu_put_dma_cookie(struct iommu_domain *domain) -{ -} - -static inline void iommu_dma_map_msi_msg(int irq, struct msi_msg *msg) -{ -} - -static inline void iommu_dma_get_resv_regions(struct device *dev, struct list_head *list) -{ -} - -#endif /* CONFIG_IOMMU_DMA */ -#endif /* __KERNEL__ */ -#endif /* __DMA_IOMMU_H */ |
