LXR linux/drivers/gpu/drm/nouveau/include/nvkm/core/memory.h

   1#ifndef __NVKM_MEMORY_H__
   2#define __NVKM_MEMORY_H__
   3#include <core/os.h>
   4struct nvkm_device;
   5struct nvkm_vma;
   6struct nvkm_vm;
   7
   8enum nvkm_memory_target {
   9        NVKM_MEM_TARGET_INST, /* instance memory */
  10        NVKM_MEM_TARGET_VRAM, /* video memory */
  11        NVKM_MEM_TARGET_HOST, /* coherent system memory */
  12        NVKM_MEM_TARGET_NCOH, /* non-coherent system memory */
  13};
  14
  15struct nvkm_memory {
  16        const struct nvkm_memory_func *func;
  17};
  18
  19struct nvkm_memory_func {
  20        void *(*dtor)(struct nvkm_memory *);
  21        enum nvkm_memory_target (*target)(struct nvkm_memory *);
  22        u64 (*addr)(struct nvkm_memory *);
  23        u64 (*size)(struct nvkm_memory *);
  24        void (*boot)(struct nvkm_memory *, struct nvkm_vm *);
  25        void __iomem *(*acquire)(struct nvkm_memory *);
  26        void (*release)(struct nvkm_memory *);
  27        u32 (*rd32)(struct nvkm_memory *, u64 offset);
  28        void (*wr32)(struct nvkm_memory *, u64 offset, u32 data);
  29        void (*map)(struct nvkm_memory *, struct nvkm_vma *, u64 offset);
  30};
  31
  32void nvkm_memory_ctor(const struct nvkm_memory_func *, struct nvkm_memory *);
  33int nvkm_memory_new(struct nvkm_device *, enum nvkm_memory_target,
  34                    u64 size, u32 align, bool zero, struct nvkm_memory **);
  35void nvkm_memory_del(struct nvkm_memory **);
  36#define nvkm_memory_target(p) (p)->func->target(p)
  37#define nvkm_memory_addr(p) (p)->func->addr(p)
  38#define nvkm_memory_size(p) (p)->func->size(p)
  39#define nvkm_memory_boot(p,v) (p)->func->boot((p),(v))
  40#define nvkm_memory_map(p,v,o) (p)->func->map((p),(v),(o))
  41
  42/* accessor macros - kmap()/done() must bracket use of the other accessor
  43 * macros to guarantee correct behaviour across all chipsets
  44 */
  45#define nvkm_kmap(o)     (o)->func->acquire(o)
  46#define nvkm_ro32(o,a)   (o)->func->rd32((o), (a))
  47#define nvkm_wo32(o,a,d) (o)->func->wr32((o), (a), (d))
  48#define nvkm_mo32(o,a,m,d) ({                                                  \
  49        u32 _addr = (a), _data = nvkm_ro32((o), _addr);                        \
  50        nvkm_wo32((o), _addr, (_data & ~(m)) | (d));                           \
  51        _data;                                                                 \
  52})
  53#define nvkm_done(o)     (o)->func->release(o)
  54#endif
  55