drivers/accel/ivpu/ivpu_mmu_context.h

   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, is_cd_valid */
  27         struct drm_mm mm;
  28         struct ivpu_mmu_pgtable pgtable;
  29         bool is_cd_valid;
  30         u32 id;
  31 };
  32
  33 void ivpu_mmu_context_init(struct ivpu_device *vdev, struct ivpu_mmu_context *ctx, u32 context_id);
  34 void ivpu_mmu_context_fini(struct ivpu_device *vdev, struct ivpu_mmu_context *ctx);
  35 void ivpu_mmu_global_context_init(struct ivpu_device *vdev);
  36 void ivpu_mmu_global_context_fini(struct ivpu_device *vdev);
  37 int ivpu_mmu_reserved_context_init(struct ivpu_device *vdev);
  38 void ivpu_mmu_reserved_context_fini(struct ivpu_device *vdev);
  39
  40 void ivpu_mmu_user_context_mark_invalid(struct ivpu_device *vdev, u32 ssid);
  41
  42 int ivpu_mmu_context_insert_node(struct ivpu_mmu_context *ctx, const struct ivpu_addr_range *range,
  43                                  u64 size, struct drm_mm_node *node);
  44 void ivpu_mmu_context_remove_node(struct ivpu_mmu_context *ctx, 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 int ivpu_mmu_context_set_pages_ro(struct ivpu_device *vdev, struct ivpu_mmu_context *ctx,
  51                                   u64 vpu_addr, size_t size);
  52
  53 #endif /* __IVPU_MMU_CONTEXT_H__ */