1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Copyright (C) 2020-2023 Intel Corporation
4  */
5 
6 #ifndef __IVPU_MMU_CONTEXT_H__
7 #define __IVPU_MMU_CONTEXT_H__
8 
9 #include <drm/drm_mm.h>
10 
11 struct ivpu_device;
12 struct ivpu_file_priv;
13 struct ivpu_addr_range;
14 
15 #define IVPU_MMU_PGTABLE_ENTRIES	512ull
16 
17 struct ivpu_mmu_pgtable {
18 	u64		***pte_ptrs[IVPU_MMU_PGTABLE_ENTRIES];
19 	u64		**pmd_ptrs[IVPU_MMU_PGTABLE_ENTRIES];
20 	u64		*pud_ptrs[IVPU_MMU_PGTABLE_ENTRIES];
21 	u64		*pgd_dma_ptr;
22 	dma_addr_t	pgd_dma;
23 };
24 
25 struct ivpu_mmu_context {
26 	struct mutex lock; /* protects: mm, pgtable, bo_list */
27 	struct drm_mm mm;
28 	struct ivpu_mmu_pgtable pgtable;
29 	struct list_head bo_list;
30 	u32 id;
31 };
32 
33 int ivpu_mmu_global_context_init(struct ivpu_device *vdev);
34 void ivpu_mmu_global_context_fini(struct ivpu_device *vdev);
35 
36 int ivpu_mmu_user_context_init(struct ivpu_device *vdev, struct ivpu_mmu_context *ctx, u32 ctx_id);
37 void ivpu_mmu_user_context_fini(struct ivpu_device *vdev, struct ivpu_mmu_context *ctx);
38 void ivpu_mmu_user_context_mark_invalid(struct ivpu_device *vdev, u32 ssid);
39 
40 int ivpu_mmu_context_insert_node_locked(struct ivpu_mmu_context *ctx,
41 					const struct ivpu_addr_range *range,
42 					u64 size, struct drm_mm_node *node);
43 void ivpu_mmu_context_remove_node_locked(struct ivpu_mmu_context *ctx,
44 					 struct drm_mm_node *node);
45 
46 int ivpu_mmu_context_map_sgt(struct ivpu_device *vdev, struct ivpu_mmu_context *ctx,
47 			     u64 vpu_addr, struct sg_table *sgt, bool llc_coherent);
48 void ivpu_mmu_context_unmap_sgt(struct ivpu_device *vdev, struct ivpu_mmu_context *ctx,
49 				u64 vpu_addr, struct sg_table *sgt);
50 
51 #endif /* __IVPU_MMU_CONTEXT_H__ */
52