1 /* SPDX-License-Identifier: MIT */ 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 bool mapped:1; /* Region contains valid pages. */ 21 struct nvkm_memory *memory; /* Memory currently mapped into VMA. */ 22 struct nvkm_tags *tags; /* Compression tag reference. */ 23 }; 24 25 struct nvkm_vmm { 26 const struct nvkm_vmm_func *func; 27 struct nvkm_mmu *mmu; 28 const char *name; 29 u32 debug; 30 struct kref kref; 31 struct mutex mutex; 32 33 u64 start; 34 u64 limit; 35 36 struct nvkm_vmm_pt *pd; 37 struct list_head join; 38 39 struct list_head list; 40 struct rb_root free; 41 struct rb_root root; 42 43 bool bootstrapped; 44 atomic_t engref[NVKM_SUBDEV_NR]; 45 46 dma_addr_t null; 47 void *nullp; 48 49 bool replay; 50 }; 51 52 int nvkm_vmm_new(struct nvkm_device *, u64 addr, u64 size, void *argv, u32 argc, 53 struct lock_class_key *, const char *name, struct nvkm_vmm **); 54 struct nvkm_vmm *nvkm_vmm_ref(struct nvkm_vmm *); 55 void nvkm_vmm_unref(struct nvkm_vmm **); 56 int nvkm_vmm_boot(struct nvkm_vmm *); 57 int nvkm_vmm_join(struct nvkm_vmm *, struct nvkm_memory *inst); 58 void nvkm_vmm_part(struct nvkm_vmm *, struct nvkm_memory *inst); 59 int nvkm_vmm_get(struct nvkm_vmm *, u8 page, u64 size, struct nvkm_vma **); 60 void nvkm_vmm_put(struct nvkm_vmm *, struct nvkm_vma **); 61 62 struct nvkm_vmm_map { 63 struct nvkm_memory *memory; 64 u64 offset; 65 66 struct nvkm_mm_node *mem; 67 struct scatterlist *sgl; 68 dma_addr_t *dma; 69 u64 *pfn; 70 u64 off; 71 72 const struct nvkm_vmm_page *page; 73 74 struct nvkm_tags *tags; 75 u64 next; 76 u64 type; 77 u64 ctag; 78 }; 79 80 int nvkm_vmm_map(struct nvkm_vmm *, struct nvkm_vma *, void *argv, u32 argc, 81 struct nvkm_vmm_map *); 82 void nvkm_vmm_unmap(struct nvkm_vmm *, struct nvkm_vma *); 83 84 struct nvkm_memory *nvkm_umem_search(struct nvkm_client *, u64); 85 struct nvkm_vmm *nvkm_uvmm_search(struct nvkm_client *, u64 handle); 86 87 struct nvkm_mmu { 88 const struct nvkm_mmu_func *func; 89 struct nvkm_subdev subdev; 90 91 u8 dma_bits; 92 93 int heap_nr; 94 struct { 95 #define NVKM_MEM_VRAM 0x01 96 #define NVKM_MEM_HOST 0x02 97 #define NVKM_MEM_COMP 0x04 98 #define NVKM_MEM_DISP 0x08 99 u8 type; 100 u64 size; 101 } heap[4]; 102 103 int type_nr; 104 struct { 105 #define NVKM_MEM_KIND 0x10 106 #define NVKM_MEM_MAPPABLE 0x20 107 #define NVKM_MEM_COHERENT 0x40 108 #define NVKM_MEM_UNCACHED 0x80 109 u8 type; 110 u8 heap; 111 } type[16]; 112 113 struct nvkm_vmm *vmm; 114 115 struct { 116 struct mutex mutex; 117 struct list_head list; 118 } ptc, ptp; 119 120 struct mutex mutex; /* serialises mmu invalidations */ 121 122 struct nvkm_device_oclass user; 123 }; 124 125 int nv04_mmu_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_mmu **); 126 int nv41_mmu_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_mmu **); 127 int nv44_mmu_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_mmu **); 128 int nv50_mmu_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_mmu **); 129 int g84_mmu_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_mmu **); 130 int mcp77_mmu_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_mmu **); 131 int gf100_mmu_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_mmu **); 132 int gk104_mmu_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_mmu **); 133 int gk20a_mmu_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_mmu **); 134 int gm200_mmu_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_mmu **); 135 int gm20b_mmu_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_mmu **); 136 int gp100_mmu_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_mmu **); 137 int gp10b_mmu_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_mmu **); 138 int gv100_mmu_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_mmu **); 139 int tu102_mmu_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_mmu **); 140 #endif 141