drivers/gpu/drm/nouveau/include/nvkm/subdev/mmu.h

   1 #ifndef __NVKM_MMU_H__
   2 #define __NVKM_MMU_H__
   3 #include <core/subdev.h>
   4 #include <core/mm.h>
   5 struct nvkm_device;
   6 struct nvkm_mem;
   7
   8 struct nvkm_vm_pgt {
   9         struct nvkm_gpuobj *obj[2];
  10         u32 refcount[2];
  11 };
  12
  13 struct nvkm_vm_pgd {
  14         struct list_head head;
  15         struct nvkm_gpuobj *obj;
  16 };
  17
  18 struct nvkm_vma {
  19         struct list_head head;
  20         int refcount;
  21         struct nvkm_vm *vm;
  22         struct nvkm_mm_node *node;
  23         u64 offset;
  24         u32 access;
  25 };
  26
  27 struct nvkm_vm {
  28         struct nvkm_mmu *mmu;
  29         struct nvkm_mm mm;
  30         struct kref refcount;
  31
  32         struct list_head pgd_list;
  33         atomic_t engref[NVDEV_SUBDEV_NR];
  34
  35         struct nvkm_vm_pgt *pgt;
  36         u32 fpde;
  37         u32 lpde;
  38 };
  39
  40 struct nvkm_mmu {
  41         struct nvkm_subdev base;
  42
  43         u64 limit;
  44         u8  dma_bits;
  45         u32 pgt_bits;
  46         u8  spg_shift;
  47         u8  lpg_shift;
  48
  49         int  (*create)(struct nvkm_mmu *, u64 offset, u64 length,
  50                        u64 mm_offset, struct nvkm_vm **);
  51
  52         void (*map_pgt)(struct nvkm_gpuobj *pgd, u32 pde,
  53                         struct nvkm_gpuobj *pgt[2]);
  54         void (*map)(struct nvkm_vma *, struct nvkm_gpuobj *,
  55                     struct nvkm_mem *, u32 pte, u32 cnt,
  56                     u64 phys, u64 delta);
  57         void (*map_sg)(struct nvkm_vma *, struct nvkm_gpuobj *,
  58                        struct nvkm_mem *, u32 pte, u32 cnt, dma_addr_t *);
  59         void (*unmap)(struct nvkm_gpuobj *pgt, u32 pte, u32 cnt);
  60         void (*flush)(struct nvkm_vm *);
  61 };
  62
  63 static inline struct nvkm_mmu *
  64 nvkm_mmu(void *obj)
  65 {
  66         return (void *)nvkm_subdev(obj, NVDEV_SUBDEV_MMU);
  67 }
  68
  69 #define nvkm_mmu_create(p,e,o,i,f,d)                                      \
  70         nvkm_subdev_create((p), (e), (o), 0, (i), (f), (d))
  71 #define nvkm_mmu_destroy(p)                                               \
  72         nvkm_subdev_destroy(&(p)->base)
  73 #define nvkm_mmu_init(p)                                                  \
  74         nvkm_subdev_init(&(p)->base)
  75 #define nvkm_mmu_fini(p,s)                                                \
  76         nvkm_subdev_fini(&(p)->base, (s))
  77
  78 #define _nvkm_mmu_dtor _nvkm_subdev_dtor
  79 #define _nvkm_mmu_init _nvkm_subdev_init
  80 #define _nvkm_mmu_fini _nvkm_subdev_fini
  81
  82 extern struct nvkm_oclass nv04_mmu_oclass;
  83 extern struct nvkm_oclass nv41_mmu_oclass;
  84 extern struct nvkm_oclass nv44_mmu_oclass;
  85 extern struct nvkm_oclass nv50_mmu_oclass;
  86 extern struct nvkm_oclass gf100_mmu_oclass;
  87
  88 int  nv04_vm_create(struct nvkm_mmu *, u64, u64, u64,
  89                     struct nvkm_vm **);
  90 void nv04_mmu_dtor(struct nvkm_object *);
  91
  92 int  nvkm_vm_create(struct nvkm_mmu *, u64 offset, u64 length, u64 mm_offset,
  93                     u32 block, struct nvkm_vm **);
  94 int  nvkm_vm_new(struct nvkm_device *, u64 offset, u64 length, u64 mm_offset,
  95                  struct nvkm_vm **);
  96 int  nvkm_vm_ref(struct nvkm_vm *, struct nvkm_vm **, struct nvkm_gpuobj *pgd);
  97 int  nvkm_vm_get(struct nvkm_vm *, u64 size, u32 page_shift, u32 access,
  98                  struct nvkm_vma *);
  99 void nvkm_vm_put(struct nvkm_vma *);
 100 void nvkm_vm_map(struct nvkm_vma *, struct nvkm_mem *);
 101 void nvkm_vm_map_at(struct nvkm_vma *, u64 offset, struct nvkm_mem *);
 102 void nvkm_vm_unmap(struct nvkm_vma *);
 103 void nvkm_vm_unmap_at(struct nvkm_vma *, u64 offset, u64 length);
 104 #endif