diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/include/nvkm/core/memory.h')
| -rw-r--r-- | drivers/gpu/drm/nouveau/include/nvkm/core/memory.h | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/include/nvkm/core/memory.h b/drivers/gpu/drm/nouveau/include/nvkm/core/memory.h new file mode 100644 index 000000000..74d3f1a80 --- /dev/null +++ b/drivers/gpu/drm/nouveau/include/nvkm/core/memory.h @@ -0,0 +1,121 @@ +/* SPDX-License-Identifier: MIT */ +#ifndef __NVKM_MEMORY_H__ +#define __NVKM_MEMORY_H__ +#include <core/os.h> +struct nvkm_device; +struct nvkm_vma; +struct nvkm_vmm; + +struct nvkm_tags { + struct nvkm_mm_node *mn; + refcount_t refcount; +}; + +enum nvkm_memory_target { + NVKM_MEM_TARGET_INST, /* instance memory */ + NVKM_MEM_TARGET_VRAM, /* video memory */ + NVKM_MEM_TARGET_HOST, /* coherent system memory */ + NVKM_MEM_TARGET_NCOH, /* non-coherent system memory */ +}; + +struct nvkm_memory { + const struct nvkm_memory_func *func; + const struct nvkm_memory_ptrs *ptrs; + struct kref kref; + struct nvkm_tags *tags; +}; + +struct nvkm_memory_func { + void *(*dtor)(struct nvkm_memory *); + enum nvkm_memory_target (*target)(struct nvkm_memory *); + u8 (*page)(struct nvkm_memory *); + u64 (*bar2)(struct nvkm_memory *); + u64 (*addr)(struct nvkm_memory *); + u64 (*size)(struct nvkm_memory *); + void (*boot)(struct nvkm_memory *, struct nvkm_vmm *); + void __iomem *(*acquire)(struct nvkm_memory *); + void (*release)(struct nvkm_memory *); + int (*map)(struct nvkm_memory *, u64 offset, struct nvkm_vmm *, + struct nvkm_vma *, void *argv, u32 argc); +}; + +struct nvkm_memory_ptrs { + u32 (*rd32)(struct nvkm_memory *, u64 offset); + void (*wr32)(struct nvkm_memory *, u64 offset, u32 data); +}; + +void nvkm_memory_ctor(const struct nvkm_memory_func *, struct nvkm_memory *); +int nvkm_memory_new(struct nvkm_device *, enum nvkm_memory_target, + u64 size, u32 align, bool zero, struct nvkm_memory **); +struct nvkm_memory *nvkm_memory_ref(struct nvkm_memory *); +void nvkm_memory_unref(struct nvkm_memory **); +int nvkm_memory_tags_get(struct nvkm_memory *, struct nvkm_device *, u32 tags, + void (*clear)(struct nvkm_device *, u32, u32), + struct nvkm_tags **); +void nvkm_memory_tags_put(struct nvkm_memory *, struct nvkm_device *, + struct nvkm_tags **); + +#define nvkm_memory_target(p) (p)->func->target(p) +#define nvkm_memory_page(p) (p)->func->page(p) +#define nvkm_memory_bar2(p) (p)->func->bar2(p) +#define nvkm_memory_addr(p) (p)->func->addr(p) +#define nvkm_memory_size(p) (p)->func->size(p) +#define nvkm_memory_boot(p,v) (p)->func->boot((p),(v)) +#define nvkm_memory_map(p,o,vm,va,av,ac) \ + (p)->func->map((p),(o),(vm),(va),(av),(ac)) + +/* accessor macros - kmap()/done() must bracket use of the other accessor + * macros to guarantee correct behaviour across all chipsets + */ +#define nvkm_kmap(o) (o)->func->acquire(o) +#define nvkm_done(o) (o)->func->release(o) + +#define nvkm_ro32(o,a) (o)->ptrs->rd32((o), (a)) +#define nvkm_wo32(o,a,d) (o)->ptrs->wr32((o), (a), (d)) +#define nvkm_mo32(o,a,m,d) ({ \ + u32 _addr = (a), _data = nvkm_ro32((o), _addr); \ + nvkm_wo32((o), _addr, (_data & ~(m)) | (d)); \ + _data; \ +}) + +#define nvkm_wo64(o,a,d) do { \ + u64 __a = (a), __d = (d); \ + nvkm_wo32((o), __a + 0, lower_32_bits(__d)); \ + nvkm_wo32((o), __a + 4, upper_32_bits(__d)); \ +} while(0) + +#define nvkm_robj(o,a,p,s) do { \ + u32 _addr = (a), _size = (s) >> 2, *_data = (void *)(p); \ + while (_size--) { \ + *(_data++) = nvkm_ro32((o), _addr); \ + _addr += 4; \ + } \ +} while(0) + +#define nvkm_wobj(o,a,p,s) do { \ + u32 _addr = (a), _size = (s) >> 2, *_data = (void *)(p); \ + while (_size--) { \ + nvkm_wo32((o), _addr, *(_data++)); \ + _addr += 4; \ + } \ +} while(0) + +#define nvkm_fill(t,s,o,a,d,c) do { \ + u64 _a = (a), _c = (c), _d = (d), _o = _a >> s, _s = _c << s; \ + u##t __iomem *_m = nvkm_kmap(o); \ + if (likely(_m)) { \ + if (_d) { \ + while (_c--) \ + iowrite##t##_native(_d, &_m[_o++]); \ + } else { \ + memset_io(&_m[_o], _d, _s); \ + } \ + } else { \ + for (; _c; _c--, _a += BIT(s)) \ + nvkm_wo##t((o), _a, _d); \ + } \ + nvkm_done(o); \ +} while(0) +#define nvkm_fo32(o,a,d,c) nvkm_fill(32, 2, (o), (a), (d), (c)) +#define nvkm_fo64(o,a,d,c) nvkm_fill(64, 3, (o), (a), (d), (c)) +#endif |