PCH_R_BAR_HD1
pchsmbus_write8(pch, PCH_R_BAR_HD1, req->smbr_cmd);
pch->ps_req->smbr_rdata[1] = pchsmbus_read8(pch, PCH_R_BAR_HD1);
pchsmbus_write8(pch, PCH_R_BAR_HD1, req->smbr_wdata[1]);