BDMA_CORE_RSTB
spc, spc & ~(BDMA_CORE_RSTB|OSSP_RSTB));
pmcs_wr_topunit(pwp, PMCS_SPC_RESET, spc & ~(BDMA_CORE_RSTB|OSSP_RSTB));
spc, spc | (BDMA_CORE_RSTB|OSSP_RSTB));
pmcs_wr_topunit(pwp, PMCS_SPC_RESET, spc | (BDMA_CORE_RSTB|OSSP_RSTB));