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/*
* Copyright (C) 2015 Etnaviv Project
*
* 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 __ETNAVIV_MMU_H__
#define __ETNAVIV_MMU_H__
#include <linux/iommu.h>
enum etnaviv_iommu_version {
ETNAVIV_IOMMU_V1 = 0,
ETNAVIV_IOMMU_V2,
};
struct etnaviv_gpu;
struct etnaviv_vram_mapping;
struct etnaviv_iommu_ops {
struct iommu_ops ops;
size_t (*dump_size)(struct iommu_domain *);
void (*dump)(struct iommu_domain *, void *);
};
struct etnaviv_iommu {
struct etnaviv_gpu *gpu;
struct iommu_domain *domain;
enum etnaviv_iommu_version version;
/* memory manager for GPU address area */
struct mutex lock;
struct list_head mappings;
struct drm_mm mm;
u32 last_iova;
bool need_flush;
};
struct etnaviv_gem_object;
int etnaviv_iommu_attach(struct etnaviv_iommu *iommu, const char **names,
int cnt);
int etnaviv_iommu_map(struct etnaviv_iommu *iommu, u32 iova,
struct sg_table *sgt, unsigned len, int prot);
int etnaviv_iommu_unmap(struct etnaviv_iommu *iommu, u32 iova,
struct sg_table *sgt, unsigned len);
int etnaviv_iommu_map_gem(struct etnaviv_iommu *mmu,
struct etnaviv_gem_object *etnaviv_obj, u32 memory_base,
struct etnaviv_vram_mapping *mapping);
void etnaviv_iommu_unmap_gem(struct etnaviv_iommu *mmu,
struct etnaviv_vram_mapping *mapping);
void etnaviv_iommu_destroy(struct etnaviv_iommu *iommu);
int etnaviv_iommu_get_suballoc_va(struct etnaviv_gpu *gpu, dma_addr_t paddr,
struct drm_mm_node *vram_node, size_t size,
u32 *iova);
void etnaviv_iommu_put_suballoc_va(struct etnaviv_gpu *gpu,
struct drm_mm_node *vram_node, size_t size,
u32 iova);
size_t etnaviv_iommu_dump_size(struct etnaviv_iommu *iommu);
void etnaviv_iommu_dump(struct etnaviv_iommu *iommu, void *buf);
struct etnaviv_iommu *etnaviv_iommu_new(struct etnaviv_gpu *gpu);
void etnaviv_iommu_restore(struct etnaviv_gpu *gpu);
#endif /* __ETNAVIV_MMU_H__ */
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