RTW_RCR_RXFTH_MASK
rsc->sc_rcr &= ~(RTW_RCR_MXDMA_MASK | RTW_RCR_RXFTH_MASK);
#define RTW_RCR_RXFTH_64 LSHIFT(2, RTW_RCR_RXFTH_MASK)
#define RTW_RCR_RXFTH_128 LSHIFT(3, RTW_RCR_RXFTH_MASK)
#define RTW_RCR_RXFTH_256 LSHIFT(4, RTW_RCR_RXFTH_MASK)
#define RTW_RCR_RXFTH_512 LSHIFT(5, RTW_RCR_RXFTH_MASK)
#define RTW_RCR_RXFTH_1024 LSHIFT(6, RTW_RCR_RXFTH_MASK)
#define RTW_RCR_RXFTH_WHOLE LSHIFT(7, RTW_RCR_RXFTH_MASK)