diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/core/subdev/bus/hwsq.h')
-rw-r--r-- | drivers/gpu/drm/nouveau/core/subdev/bus/hwsq.h | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/core/subdev/bus/hwsq.h b/drivers/gpu/drm/nouveau/core/subdev/bus/hwsq.h new file mode 100644 index 0000000..12176f9 --- /dev/null +++ b/drivers/gpu/drm/nouveau/core/subdev/bus/hwsq.h @@ -0,0 +1,113 @@ +#ifndef __NVKM_BUS_HWSQ_H__ +#define __NVKM_BUS_HWSQ_H__ + +#include <subdev/bus.h> + +struct hwsq { + struct nouveau_subdev *subdev; + struct nouveau_hwsq *hwsq; + int sequence; +}; + +struct hwsq_reg { + int sequence; + bool force; + u32 addr[2]; + u32 data; +}; + +static inline struct hwsq_reg +hwsq_reg2(u32 addr1, u32 addr2) +{ + return (struct hwsq_reg) { + .sequence = 0, + .force = 0, + .addr = { addr1, addr2 }, + .data = 0xdeadbeef, + }; +} + +static inline struct hwsq_reg +hwsq_reg(u32 addr) +{ + return hwsq_reg2(addr, addr); +} + +static inline int +hwsq_init(struct hwsq *ram, struct nouveau_subdev *subdev) +{ + struct nouveau_bus *pbus = nouveau_bus(subdev); + int ret; + + ret = nouveau_hwsq_init(pbus, &ram->hwsq); + if (ret) + return ret; + + ram->sequence++; + ram->subdev = subdev; + return 0; +} + +static inline int +hwsq_exec(struct hwsq *ram, bool exec) +{ + int ret = 0; + if (ram->subdev) { + ret = nouveau_hwsq_fini(&ram->hwsq, exec); + ram->subdev = NULL; + } + return ret; +} + +static inline u32 +hwsq_rd32(struct hwsq *ram, struct hwsq_reg *reg) +{ + if (reg->sequence != ram->sequence) + reg->data = nv_rd32(ram->subdev, reg->addr[0]); + return reg->data; +} + +static inline void +hwsq_wr32(struct hwsq *ram, struct hwsq_reg *reg, u32 data) +{ + reg->sequence = ram->sequence; + reg->data = data; + if (reg->addr[0] != reg->addr[1]) + nouveau_hwsq_wr32(ram->hwsq, reg->addr[1], reg->data); + nouveau_hwsq_wr32(ram->hwsq, reg->addr[0], reg->data); +} + +static inline void +hwsq_nuke(struct hwsq *ram, struct hwsq_reg *reg) +{ + reg->force = true; +} + +static inline u32 +hwsq_mask(struct hwsq *ram, struct hwsq_reg *reg, u32 mask, u32 data) +{ + u32 temp = hwsq_rd32(ram, reg); + if (temp != ((temp & ~mask) | data) || reg->force) + hwsq_wr32(ram, reg, (temp & ~mask) | data); + return temp; +} + +static inline void +hwsq_setf(struct hwsq *ram, u8 flag, int data) +{ + nouveau_hwsq_setf(ram->hwsq, flag, data); +} + +static inline void +hwsq_wait(struct hwsq *ram, u8 flag, u8 data) +{ + nouveau_hwsq_wait(ram->hwsq, flag, data); +} + +static inline void +hwsq_nsec(struct hwsq *ram, u32 nsec) +{ + nouveau_hwsq_nsec(ram->hwsq, nsec); +} + +#endif |