bwn_dma_ringsetup
static struct bwn_dma_ring *bwn_dma_ringsetup(struct bwn_mac *,
dma->wme[WME_AC_BK] = bwn_dma_ringsetup(mac, 0, 1);
dma->wme[WME_AC_BE] = bwn_dma_ringsetup(mac, 1, 1);
dma->wme[WME_AC_VI] = bwn_dma_ringsetup(mac, 2, 1);
dma->wme[WME_AC_VO] = bwn_dma_ringsetup(mac, 3, 1);
dma->mcast = bwn_dma_ringsetup(mac, 4, 1);
dma->rx = bwn_dma_ringsetup(mac, 0, 0);