powernow_k8_fidvid
static uint64_t powernow_k8_fidvid(u_int fid, uint64_t vid, uint64_t ctrl);
status = powernow_k8_fidvid(cfid, (val > 0) ? val : 0, 1ULL);
status = powernow_k8_fidvid(cfid, cvid - 1, 1ULL);
status = powernow_k8_fidvid(val, cvid,
status = powernow_k8_fidvid(fid, cvid,
status = powernow_k8_fidvid(cfid, vid, 1ULL);