PERF_SPAD_CMD
PERF_SPAD_CMD(perf->gidx));
PERF_SPAD_CMD(perf->gidx),
val = ntb_spad_read(perf->ntb, PERF_SPAD_CMD(peer->gidx));
ntb_spad_write(perf->ntb, PERF_SPAD_CMD(peer->gidx),
ntb_spad_write(perf->ntb, PERF_SPAD_CMD(peer->gidx), 0);