BWFM_PCI_DMA_KVA
ring->r_ptr = *(uint16_t *)(BWFM_PCI_DMA_KVA(sc->sc_dma_idx_buf)
ring->w_ptr = *(uint16_t *)(BWFM_PCI_DMA_KVA(sc->sc_dma_idx_buf)
*(uint16_t *)(BWFM_PCI_DMA_KVA(sc->sc_dma_idx_buf)
*(uint16_t *)(BWFM_PCI_DMA_KVA(sc->sc_dma_idx_buf)
ret = BWFM_PCI_DMA_KVA(ring->ring) + (ring->w_ptr * ring->itemsz);
ret = BWFM_PCI_DMA_KVA(ring->ring) + (ring->w_ptr * ring->itemsz);
return BWFM_PCI_DMA_KVA(ring->ring) + (ring->r_ptr * ring->itemsz);