REG_BUFWIN
writesw(REG_BUFWIN, (data), (length) >> 1)
writew((data), REG_BUFWIN)
void __iomem *reg_bufwin = REG_BUFWIN; \
readsw(REG_BUFWIN, (data), (length) >> 1)
readw(REG_BUFWIN)
readw(REG_BUFWIN) | (readw(REG_BUFWIN) << 16)
ether3_outb(dev->dev_addr[i], REG_BUFWIN);
ether3_outw((TX_END>>8) - 1, REG_BUFWIN);
ether3_outb(dev->dev_addr[i], REG_BUFWIN);
ether3_outw((TX_END>>8) - 1, REG_BUFWIN);