diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/core/subdev/fb/ramfuc.h')
-rw-r--r-- | drivers/gpu/drm/nouveau/core/subdev/fb/ramfuc.h | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/core/subdev/fb/ramfuc.h b/drivers/gpu/drm/nouveau/core/subdev/fb/ramfuc.h new file mode 100644 index 000000000000..0f57fcfe0bbf --- /dev/null +++ b/drivers/gpu/drm/nouveau/core/subdev/fb/ramfuc.h @@ -0,0 +1,118 @@ +#ifndef __NVKM_FBRAM_FUC_H__ +#define __NVKM_FBRAM_FUC_H__ + +#include <subdev/pwr.h> + +struct ramfuc { + struct nouveau_memx *memx; + struct nouveau_fb *pfb; + int sequence; +}; + +struct ramfuc_reg { + int sequence; + bool force; + u32 addr[2]; + u32 data; +}; + +static inline struct ramfuc_reg +ramfuc_reg2(u32 addr1, u32 addr2) +{ + return (struct ramfuc_reg) { + .sequence = 0, + .addr = { addr1, addr2 }, + .data = 0xdeadbeef, + }; +} + +static inline struct ramfuc_reg +ramfuc_reg(u32 addr) +{ + return ramfuc_reg2(addr, addr); +} + +static inline int +ramfuc_init(struct ramfuc *ram, struct nouveau_fb *pfb) +{ + struct nouveau_pwr *ppwr = nouveau_pwr(pfb); + int ret; + + ret = nouveau_memx_init(ppwr, &ram->memx); + if (ret) + return ret; + + ram->sequence++; + ram->pfb = pfb; + return 0; +} + +static inline int +ramfuc_exec(struct ramfuc *ram, bool exec) +{ + int ret = 0; + if (ram->pfb) { + ret = nouveau_memx_fini(&ram->memx, exec); + ram->pfb = NULL; + } + return ret; +} + +static inline u32 +ramfuc_rd32(struct ramfuc *ram, struct ramfuc_reg *reg) +{ + if (reg->sequence != ram->sequence) + reg->data = nv_rd32(ram->pfb, reg->addr[0]); + return reg->data; +} + +static inline void +ramfuc_wr32(struct ramfuc *ram, struct ramfuc_reg *reg, u32 data) +{ + reg->sequence = ram->sequence; + reg->data = data; + if (reg->addr[0] != reg->addr[1]) + nouveau_memx_wr32(ram->memx, reg->addr[1], reg->data); + nouveau_memx_wr32(ram->memx, reg->addr[0], reg->data); +} + +static inline void +ramfuc_nuke(struct ramfuc *ram, struct ramfuc_reg *reg) +{ + reg->force = true; +} + +static inline u32 +ramfuc_mask(struct ramfuc *ram, struct ramfuc_reg *reg, u32 mask, u32 data) +{ + u32 temp = ramfuc_rd32(ram, reg); + if (temp != ((temp & ~mask) | data) || reg->force) { + ramfuc_wr32(ram, reg, (temp & ~mask) | data); + reg->force = false; + } + return temp; +} + +static inline void +ramfuc_wait(struct ramfuc *ram, u32 addr, u32 mask, u32 data, u32 nsec) +{ + nouveau_memx_wait(ram->memx, addr, mask, data, nsec); +} + +static inline void +ramfuc_nsec(struct ramfuc *ram, u32 nsec) +{ + nouveau_memx_nsec(ram->memx, nsec); +} + +#define ram_init(s,p) ramfuc_init(&(s)->base, (p)) +#define ram_exec(s,e) ramfuc_exec(&(s)->base, (e)) +#define ram_have(s,r) ((s)->r_##r.addr != 0x000000) +#define ram_rd32(s,r) ramfuc_rd32(&(s)->base, &(s)->r_##r) +#define ram_wr32(s,r,d) ramfuc_wr32(&(s)->base, &(s)->r_##r, (d)) +#define ram_nuke(s,r) ramfuc_nuke(&(s)->base, &(s)->r_##r) +#define ram_mask(s,r,m,d) ramfuc_mask(&(s)->base, &(s)->r_##r, (m), (d)) +#define ram_wait(s,r,m,d,n) ramfuc_wait(&(s)->base, (r), (m), (d), (n)) +#define ram_nsec(s,n) ramfuc_nsec(&(s)->base, (n)) + +#endif |