1 /* SPDX-License-Identifier: MIT */ 2 #ifndef __NVKM_MEMORY_H__ 3 #define __NVKM_MEMORY_H__ 4 #include <core/os.h> 5 struct nvkm_device; 6 struct nvkm_vma; 7 struct nvkm_vmm; 8 9 struct nvkm_tags { 10 struct nvkm_mm_node *mn; 11 refcount_t refcount; 12 }; 13 14 enum nvkm_memory_target { 15 NVKM_MEM_TARGET_INST_SR_LOST, /* instance memory - not preserved across suspend */ 16 NVKM_MEM_TARGET_INST, /* instance memory */ 17 NVKM_MEM_TARGET_VRAM, /* video memory */ 18 NVKM_MEM_TARGET_HOST, /* coherent system memory */ 19 NVKM_MEM_TARGET_NCOH, /* non-coherent system memory */ 20 }; 21 22 struct nvkm_memory { 23 const struct nvkm_memory_func *func; 24 const struct nvkm_memory_ptrs *ptrs; 25 struct kref kref; 26 struct nvkm_tags *tags; 27 }; 28 29 struct nvkm_memory_func { 30 void *(*dtor)(struct nvkm_memory *); 31 enum nvkm_memory_target (*target)(struct nvkm_memory *); 32 u8 (*page)(struct nvkm_memory *); 33 u64 (*bar2)(struct nvkm_memory *); 34 u64 (*addr)(struct nvkm_memory *); 35 u64 (*size)(struct nvkm_memory *); 36 void (*boot)(struct nvkm_memory *, struct nvkm_vmm *); 37 void __iomem *(*acquire)(struct nvkm_memory *); 38 void (*release)(struct nvkm_memory *); 39 int (*map)(struct nvkm_memory *, u64 offset, struct nvkm_vmm *, 40 struct nvkm_vma *, void *argv, u32 argc); 41 int (*kmap)(struct nvkm_memory *, struct nvkm_memory **); 42 }; 43 44 struct nvkm_memory_ptrs { 45 u32 (*rd32)(struct nvkm_memory *, u64 offset); 46 void (*wr32)(struct nvkm_memory *, u64 offset, u32 data); 47 }; 48 49 void nvkm_memory_ctor(const struct nvkm_memory_func *, struct nvkm_memory *); 50 int nvkm_memory_new(struct nvkm_device *, enum nvkm_memory_target, 51 u64 size, u32 align, bool zero, struct nvkm_memory **); 52 struct nvkm_memory *nvkm_memory_ref(struct nvkm_memory *); 53 void nvkm_memory_unref(struct nvkm_memory **); 54 int nvkm_memory_tags_get(struct nvkm_memory *, struct nvkm_device *, u32 tags, 55 void (*clear)(struct nvkm_device *, u32, u32), 56 struct nvkm_tags **); 57 void nvkm_memory_tags_put(struct nvkm_memory *, struct nvkm_device *, 58 struct nvkm_tags **); 59 60 #define nvkm_memory_target(p) (p)->func->target(p) 61 #define nvkm_memory_page(p) (p)->func->page(p) 62 #define nvkm_memory_bar2(p) (p)->func->bar2(p) 63 #define nvkm_memory_addr(p) (p)->func->addr(p) 64 #define nvkm_memory_size(p) (p)->func->size(p) 65 #define nvkm_memory_boot(p,v) (p)->func->boot((p),(v)) 66 #define nvkm_memory_map(p,o,vm,va,av,ac) \ 67 (p)->func->map((p),(o),(vm),(va),(av),(ac)) 68 #define nvkm_memory_kmap(p,i) ((p)->func->kmap ? (p)->func->kmap((p), (i)) : -ENOSYS) 69 70 /* accessor macros - kmap()/done() must bracket use of the other accessor 71 * macros to guarantee correct behaviour across all chipsets 72 */ 73 #define nvkm_kmap(o) (o)->func->acquire(o) 74 #define nvkm_done(o) (o)->func->release(o) 75 76 #define nvkm_ro32(o,a) (o)->ptrs->rd32((o), (a)) 77 #define nvkm_wo32(o,a,d) (o)->ptrs->wr32((o), (a), (d)) 78 #define nvkm_mo32(o,a,m,d) ({ \ 79 u32 _addr = (a), _data = nvkm_ro32((o), _addr); \ 80 nvkm_wo32((o), _addr, (_data & ~(m)) | (d)); \ 81 _data; \ 82 }) 83 84 #define nvkm_wo64(o,a,d) do { \ 85 u64 __a = (a), __d = (d); \ 86 nvkm_wo32((o), __a + 0, lower_32_bits(__d)); \ 87 nvkm_wo32((o), __a + 4, upper_32_bits(__d)); \ 88 } while(0) 89 90 #define nvkm_robj(o,a,p,s) do { \ 91 u32 _addr = (a), _size = (s) >> 2, *_data = (void *)(p); \ 92 while (_size--) { \ 93 *(_data++) = nvkm_ro32((o), _addr); \ 94 _addr += 4; \ 95 } \ 96 } while(0) 97 98 #define nvkm_wobj(o,a,p,s) do { \ 99 u32 _addr = (a), _size = (s) >> 2, *_data = (void *)(p); \ 100 while (_size--) { \ 101 nvkm_wo32((o), _addr, *(_data++)); \ 102 _addr += 4; \ 103 } \ 104 } while(0) 105 106 #define nvkm_fill(t,s,o,a,d,c) do { \ 107 u64 _a = (a), _c = (c), _d = (d), _o = _a >> s, _s = _c << s; \ 108 u##t __iomem *_m = nvkm_kmap(o); \ 109 if (likely(_m)) { \ 110 if (_d) { \ 111 while (_c--) \ 112 iowrite##t##_native(_d, &_m[_o++]); \ 113 } else { \ 114 memset_io(&_m[_o], _d, _s); \ 115 } \ 116 } else { \ 117 for (; _c; _c--, _a += BIT(s)) \ 118 nvkm_wo##t((o), _a, _d); \ 119 } \ 120 nvkm_done(o); \ 121 } while(0) 122 #define nvkm_fo32(o,a,d,c) nvkm_fill(32, 2, (o), (a), (d), (c)) 123 #define nvkm_fo64(o,a,d,c) nvkm_fill(64, 3, (o), (a), (d), (c)) 124 #endif 125