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 busy:1; /* Region busy (for temporarily preventing user access). */ 19 bool mapped:1; /* Region contains valid pages. */ 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 bool replay; 49 }; 50 51 int nvkm_vmm_new(struct nvkm_device *, u64 addr, u64 size, void *argv, u32 argc, 52 struct lock_class_key *, const char *name, struct nvkm_vmm **); 53 struct nvkm_vmm *nvkm_vmm_ref(struct nvkm_vmm *); 54 void nvkm_vmm_unref(struct nvkm_vmm **); 55 int nvkm_vmm_boot(struct nvkm_vmm *); 56 int nvkm_vmm_join(struct nvkm_vmm *, struct nvkm_memory *inst); 57 void nvkm_vmm_part(struct nvkm_vmm *, struct nvkm_memory *inst); 58 int nvkm_vmm_get(struct nvkm_vmm *, u8 page, u64 size, struct nvkm_vma **); 59 void nvkm_vmm_put(struct nvkm_vmm *, struct nvkm_vma **); 60 61 struct nvkm_vmm_map { 62 struct nvkm_memory *memory; 63 u64 offset; 64 65 struct nvkm_mm_node *mem; 66 struct scatterlist *sgl; 67 dma_addr_t *dma; 68 u64 *pfn; 69 u64 off; 70 71 const struct nvkm_vmm_page *page; 72 73 struct nvkm_tags *tags; 74 u64 next; 75 u64 type; 76 u64 ctag; 77 }; 78 79 int nvkm_vmm_map(struct nvkm_vmm *, struct nvkm_vma *, void *argv, u32 argc, 80 struct nvkm_vmm_map *); 81 void nvkm_vmm_unmap(struct nvkm_vmm *, struct nvkm_vma *); 82 83 struct nvkm_memory *nvkm_umem_search(struct nvkm_client *, u64); 84 struct nvkm_vmm *nvkm_uvmm_search(struct nvkm_client *, u64 handle); 85 86 struct nvkm_mmu { 87 const struct nvkm_mmu_func *func; 88 struct nvkm_subdev subdev; 89 90 u8 dma_bits; 91 92 int heap_nr; 93 struct { 94 #define NVKM_MEM_VRAM 0x01 95 #define NVKM_MEM_HOST 0x02 96 #define NVKM_MEM_COMP 0x04 97 #define NVKM_MEM_DISP 0x08 98 u8 type; 99 u64 size; 100 } heap[4]; 101 102 int type_nr; 103 struct { 104 #define NVKM_MEM_KIND 0x10 105 #define NVKM_MEM_MAPPABLE 0x20 106 #define NVKM_MEM_COHERENT 0x40 107 #define NVKM_MEM_UNCACHED 0x80 108 u8 type; 109 u8 heap; 110 } type[16]; 111 112 struct nvkm_vmm *vmm; 113 114 struct { 115 struct mutex mutex; 116 struct list_head list; 117 } ptc, ptp; 118 119 struct mutex mutex; /* serialises mmu invalidations */ 120 121 struct nvkm_device_oclass user; 122 }; 123 124 int nv04_mmu_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_mmu **); 125 int nv41_mmu_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_mmu **); 126 int nv44_mmu_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_mmu **); 127 int nv50_mmu_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_mmu **); 128 int g84_mmu_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_mmu **); 129 int mcp77_mmu_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_mmu **); 130 int gf100_mmu_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_mmu **); 131 int gk104_mmu_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_mmu **); 132 int gk20a_mmu_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_mmu **); 133 int gm200_mmu_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_mmu **); 134 int gm20b_mmu_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_mmu **); 135 int gp100_mmu_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_mmu **); 136 int gp10b_mmu_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_mmu **); 137 int gv100_mmu_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_mmu **); 138 int tu102_mmu_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_mmu **); 139 #endif 140