diff options
Diffstat (limited to 'drivers/staging/media/ipu3/ipu3-mmu.h')
| -rw-r--r-- | drivers/staging/media/ipu3/ipu3-mmu.h | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/staging/media/ipu3/ipu3-mmu.h b/drivers/staging/media/ipu3/ipu3-mmu.h new file mode 100644 index 000000000000..8fe63b4c6e1c --- /dev/null +++ b/drivers/staging/media/ipu3/ipu3-mmu.h @@ -0,0 +1,35 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright (C) 2018 Intel Corporation */ +/* Copyright 2018 Google LLC. */ + +#ifndef __IPU3_MMU_H +#define __IPU3_MMU_H + +/** + * struct ipu3_mmu_info - Describes mmu geometry + * + * @aperture_start: First address that can be mapped + * @aperture_end: Last address that can be mapped + * @pgsize_bitmap: Bitmap of page sizes in use + */ +struct ipu3_mmu_info { + dma_addr_t aperture_start; + dma_addr_t aperture_end; + unsigned long pgsize_bitmap; +}; + +struct device; +struct scatterlist; + +struct ipu3_mmu_info *ipu3_mmu_init(struct device *parent, void __iomem *base); +void ipu3_mmu_exit(struct ipu3_mmu_info *info); +void ipu3_mmu_suspend(struct ipu3_mmu_info *info); +void ipu3_mmu_resume(struct ipu3_mmu_info *info); + +int ipu3_mmu_map(struct ipu3_mmu_info *info, unsigned long iova, + phys_addr_t paddr, size_t size); +size_t ipu3_mmu_unmap(struct ipu3_mmu_info *info, unsigned long iova, + size_t size); +size_t ipu3_mmu_map_sg(struct ipu3_mmu_info *info, unsigned long iova, + struct scatterlist *sg, unsigned int nents); +#endif |