CSR_SRV_REQ
case CSR_SRV_REQ | PHS_MESS_OUT:
sr == (CSR_SRV_REQ | PHS_MESS_IN)) {
case CSR_SRV_REQ | PHS_DATA_IN:
case CSR_SRV_REQ | PHS_DATA_OUT:
case CSR_SRV_REQ | PHS_COMMAND:
case CSR_SRV_REQ | PHS_STATUS:
case CSR_SRV_REQ | PHS_MESS_IN: