NVIF_CHAN906F_PBPTR_BITS
#define NVIF_CHAN906F_PBPTR_MASK ((1 << NVIF_CHAN906F_PBPTR_BITS) - 1)
#define NVIF_CHAN906F_GPPTR_SHIFT NVIF_CHAN906F_PBPTR_BITS
#define NVIF_CHAN906F_GPPTR_BITS (32 - NVIF_CHAN906F_PBPTR_BITS)