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

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __NVKM_MMU_H__
   3 #define __NVKM_MMU_H__
   4 #include <core/subdev.h>
   5
   6 struct nvkm_vma {
   7         struct list_head head;
   8         struct rb_node tree;
   9         u64 addr;
  10         u64 size:50;
  11         bool mapref:1; /* PTs (de)referenced on (un)map (vs pre-allocated). */
  12         bool sparse:1; /* Unmapped PDEs/PTEs will not trigger MMU faults. */
  13 #define NVKM_VMA_PAGE_NONE 7
  14         u8   page:3; /* Requested page type (index, or NONE for automatic). */
  15         u8   refd:3; /* Current page type (index, or NONE for unreferenced). */
  16         bool used:1; /* Region allocated. */
  17         bool part:1; /* Region was split from an allocated region by map(). */
  18         bool user:1; /* Region user-allocated. */
  19         bool busy:1; /* Region busy (for temporarily preventing user access). */
  20         struct nvkm_memory *memory; /* Memory currently mapped into VMA. */
  21         struct nvkm_tags *tags; /* Compression tag reference. */
  22 };
  23
  24 struct nvkm_vmm {
  25         const struct nvkm_vmm_func *func;
  26         struct nvkm_mmu *mmu;
  27         const char *name;
  28         u32 debug;
  29         struct kref kref;
  30         struct mutex mutex;
  31
  32         u64 start;
  33         u64 limit;
  34
  35         struct nvkm_vmm_pt *pd;
  36         struct list_head join;
  37
  38         struct list_head list;
  39         struct rb_root free;
  40         struct rb_root root;
  41
  42         bool bootstrapped;
  43         atomic_t engref[NVKM_SUBDEV_NR];
  44
  45         dma_addr_t null;
  46         void *nullp;
  47 };
  48
  49 int nvkm_vmm_new(struct nvkm_device *, u64 addr, u64 size, void *argv, u32 argc,
  50                  struct lock_class_key *, const char *name, struct nvkm_vmm **);
  51 struct nvkm_vmm *nvkm_vmm_ref(struct nvkm_vmm *);
  52 void nvkm_vmm_unref(struct nvkm_vmm **);
  53 int nvkm_vmm_boot(struct nvkm_vmm *);
  54 int nvkm_vmm_join(struct nvkm_vmm *, struct nvkm_memory *inst);
  55 void nvkm_vmm_part(struct nvkm_vmm *, struct nvkm_memory *inst);
  56 int nvkm_vmm_get(struct nvkm_vmm *, u8 page, u64 size, struct nvkm_vma **);
  57 void nvkm_vmm_put(struct nvkm_vmm *, struct nvkm_vma **);
  58
  59 struct nvkm_vmm_map {
  60         struct nvkm_memory *memory;
  61         u64 offset;
  62
  63         struct nvkm_mm_node *mem;
  64         struct scatterlist *sgl;
  65         dma_addr_t *dma;
  66         u64 off;
  67
  68         const struct nvkm_vmm_page *page;
  69
  70         struct nvkm_tags *tags;
  71         u64 next;
  72         u64 type;
  73         u64 ctag;
  74 };
  75
  76 int nvkm_vmm_map(struct nvkm_vmm *, struct nvkm_vma *, void *argv, u32 argc,
  77                  struct nvkm_vmm_map *);
  78 void nvkm_vmm_unmap(struct nvkm_vmm *, struct nvkm_vma *);
  79
  80 struct nvkm_memory *nvkm_umem_search(struct nvkm_client *, u64);
  81 struct nvkm_vmm *nvkm_uvmm_search(struct nvkm_client *, u64 handle);
  82
  83 struct nvkm_mmu {
  84         const struct nvkm_mmu_func *func;
  85         struct nvkm_subdev subdev;
  86
  87         u8  dma_bits;
  88
  89         int heap_nr;
  90         struct {
  91 #define NVKM_MEM_VRAM                                                      0x01
  92 #define NVKM_MEM_HOST                                                      0x02
  93 #define NVKM_MEM_COMP                                                      0x04
  94 #define NVKM_MEM_DISP                                                      0x08
  95                 u8  type;
  96                 u64 size;
  97         } heap[4];
  98
  99         int type_nr;
 100         struct {
 101 #define NVKM_MEM_KIND                                                      0x10
 102 #define NVKM_MEM_MAPPABLE                                                  0x20
 103 #define NVKM_MEM_COHERENT                                                  0x40
 104 #define NVKM_MEM_UNCACHED                                                  0x80
 105                 u8 type;
 106                 u8 heap;
 107         } type[16];
 108
 109         struct nvkm_vmm *vmm;
 110
 111         struct {
 112                 struct mutex mutex;
 113                 struct list_head list;
 114         } ptc, ptp;
 115
 116         struct nvkm_device_oclass user;
 117 };
 118
 119 int nv04_mmu_new(struct nvkm_device *, int, struct nvkm_mmu **);
 120 int nv41_mmu_new(struct nvkm_device *, int, struct nvkm_mmu **);
 121 int nv44_mmu_new(struct nvkm_device *, int, struct nvkm_mmu **);
 122 int nv50_mmu_new(struct nvkm_device *, int, struct nvkm_mmu **);
 123 int g84_mmu_new(struct nvkm_device *, int, struct nvkm_mmu **);
 124 int gf100_mmu_new(struct nvkm_device *, int, struct nvkm_mmu **);
 125 int gk104_mmu_new(struct nvkm_device *, int, struct nvkm_mmu **);
 126 int gk20a_mmu_new(struct nvkm_device *, int, struct nvkm_mmu **);
 127 int gm200_mmu_new(struct nvkm_device *, int, struct nvkm_mmu **);
 128 int gm20b_mmu_new(struct nvkm_device *, int, struct nvkm_mmu **);
 129 int gp100_mmu_new(struct nvkm_device *, int, struct nvkm_mmu **);
 130 int gp10b_mmu_new(struct nvkm_device *, int, struct nvkm_mmu **);
 131 #endif