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
   5 struct nvkm_vma {
   6         struct list_head head;
   7         struct rb_node tree;
   8         u64 addr;
   9         u64 size:50;
  10         bool mapref:1; /* PTs (de)referenced on (un)map (vs pre-allocated). */
  11         bool sparse:1; /* Unmapped PDEs/PTEs will not trigger MMU faults. */
  12 #define NVKM_VMA_PAGE_NONE 7
  13         u8   page:3; /* Requested page type (index, or NONE for automatic). */
  14         u8   refd:3; /* Current page type (index, or NONE for unreferenced). */
  15         bool used:1; /* Region allocated. */
  16         bool part:1; /* Region was split from an allocated region by map(). */
  17         bool user:1; /* Region user-allocated. */
  18         bool busy:1; /* Region busy (for temporarily preventing user access). */
  19         struct nvkm_memory *memory; /* Memory currently mapped into VMA. */
  20         struct nvkm_tags *tags; /* Compression tag reference. */
  21 };
  22
  23 struct nvkm_vmm {
  24         const struct nvkm_vmm_func *func;
  25         struct nvkm_mmu *mmu;
  26         const char *name;
  27         u32 debug;
  28         struct kref kref;
  29         struct mutex mutex;
  30
  31         u64 start;
  32         u64 limit;
  33
  34         struct nvkm_vmm_pt *pd;
  35         struct list_head join;
  36
  37         struct list_head list;
  38         struct rb_root free;
  39         struct rb_root root;
  40
  41         bool bootstrapped;
  42         atomic_t engref[NVKM_SUBDEV_NR];
  43
  44         dma_addr_t null;
  45         void *nullp;
  46 };
  47
  48 int nvkm_vmm_new(struct nvkm_device *, u64 addr, u64 size, void *argv, u32 argc,
  49                  struct lock_class_key *, const char *name, struct nvkm_vmm **);
  50 struct nvkm_vmm *nvkm_vmm_ref(struct nvkm_vmm *);
  51 void nvkm_vmm_unref(struct nvkm_vmm **);
  52 int nvkm_vmm_boot(struct nvkm_vmm *);
  53 int nvkm_vmm_join(struct nvkm_vmm *, struct nvkm_memory *inst);
  54 void nvkm_vmm_part(struct nvkm_vmm *, struct nvkm_memory *inst);
  55 int nvkm_vmm_get(struct nvkm_vmm *, u8 page, u64 size, struct nvkm_vma **);
  56 void nvkm_vmm_put(struct nvkm_vmm *, struct nvkm_vma **);
  57
  58 struct nvkm_vmm_map {
  59         struct nvkm_memory *memory;
  60         u64 offset;
  61
  62         struct nvkm_mm_node *mem;
  63         struct scatterlist *sgl;
  64         dma_addr_t *dma;
  65         u64 off;
  66
  67         const struct nvkm_vmm_page *page;
  68
  69         struct nvkm_tags *tags;
  70         u64 next;
  71         u64 type;
  72         u64 ctag;
  73 };
  74
  75 int nvkm_vmm_map(struct nvkm_vmm *, struct nvkm_vma *, void *argv, u32 argc,
  76                  struct nvkm_vmm_map *);
  77 void nvkm_vmm_unmap(struct nvkm_vmm *, struct nvkm_vma *);
  78
  79 struct nvkm_memory *nvkm_umem_search(struct nvkm_client *, u64);
  80 struct nvkm_vmm *nvkm_uvmm_search(struct nvkm_client *, u64 handle);
  81
  82 struct nvkm_mmu {
  83         const struct nvkm_mmu_func *func;
  84         struct nvkm_subdev subdev;
  85
  86         u8  dma_bits;
  87
  88         int heap_nr;
  89         struct {
  90 #define NVKM_MEM_VRAM                                                      0x01
  91 #define NVKM_MEM_HOST                                                      0x02
  92 #define NVKM_MEM_COMP                                                      0x04
  93 #define NVKM_MEM_DISP                                                      0x08
  94                 u8  type;
  95                 u64 size;
  96         } heap[4];
  97
  98         int type_nr;
  99         struct {
 100 #define NVKM_MEM_KIND                                                      0x10
 101 #define NVKM_MEM_MAPPABLE                                                  0x20
 102 #define NVKM_MEM_COHERENT                                                  0x40
 103 #define NVKM_MEM_UNCACHED                                                  0x80
 104                 u8 type;
 105                 u8 heap;
 106         } type[16];
 107
 108         struct nvkm_vmm *vmm;
 109
 110         struct {
 111                 struct mutex mutex;
 112                 struct list_head list;
 113         } ptc, ptp;
 114
 115         struct nvkm_device_oclass user;
 116 };
 117
 118 int nv04_mmu_new(struct nvkm_device *, int, struct nvkm_mmu **);
 119 int nv41_mmu_new(struct nvkm_device *, int, struct nvkm_mmu **);
 120 int nv44_mmu_new(struct nvkm_device *, int, struct nvkm_mmu **);
 121 int nv50_mmu_new(struct nvkm_device *, int, struct nvkm_mmu **);
 122 int g84_mmu_new(struct nvkm_device *, int, struct nvkm_mmu **);
 123 int gf100_mmu_new(struct nvkm_device *, int, struct nvkm_mmu **);
 124 int gk104_mmu_new(struct nvkm_device *, int, struct nvkm_mmu **);
 125 int gk20a_mmu_new(struct nvkm_device *, int, struct nvkm_mmu **);
 126 int gm200_mmu_new(struct nvkm_device *, int, struct nvkm_mmu **);
 127 int gm20b_mmu_new(struct nvkm_device *, int, struct nvkm_mmu **);
 128 int gp100_mmu_new(struct nvkm_device *, int, struct nvkm_mmu **);
 129 int gp10b_mmu_new(struct nvkm_device *, int, struct nvkm_mmu **);
 130 #endif