TG3PCI_DMA_RW_CTRL
val = tr32(TG3PCI_DMA_RW_CTRL) &
tw32(TG3PCI_DMA_RW_CTRL, val | tp->dma_rwctrl);
tw32(TG3PCI_DMA_RW_CTRL, tp->dma_rwctrl);
tw32(TG3PCI_DMA_RW_CTRL, tp->dma_rwctrl);
tw32(TG3PCI_DMA_RW_CTRL, tp->dma_rwctrl);
tw32(TG3PCI_DMA_RW_CTRL, tp->dma_rwctrl);
tw32(TG3PCI_DMA_RW_CTRL, tp->dma_rwctrl);