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Commit e5fcfc1f authored by Joe Perches's avatar Joe Perches Committed by Michael Grzeschik
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arcnet: Add arcnet_<I/O> macros 



arcnet uses an I/O scheme which can align I/O addresses to word boundaries
on different architectures.

Add arcnet specific macros which can hide this alignment calculation.

Signed-off-by: default avatarJoe Perches <joe@perches.com>
Signed-off-by: default avatarMichael Grzeschik <m.grzeschik@pengutronix.de>
parent 4e299b92

drivers/net/arcnet/arcdevice.h

+25 −0
Original line number Diff line number Diff line
@@ -342,5 +342,30 @@ netdev_tx_t arcnet_send_packet(struct sk_buff *skb, 
			       struct net_device *dev);

void arcnet_timeout(struct net_device *dev);



/* I/O equivalents */



/* addr and offset allow register like names to define the actual IO  address.

 * A configuration option multiplies the offset for alignment.

 */

#define arcnet_inb(addr, offset)					\

	inb((addr) + (offset))

#define arcnet_outb(value, addr, offset)				\

	outb(value, (addr) + (offset))



#define arcnet_insb(addr, offset, buffer, count)			\

	insb((addr) + (offset), buffer, count)

#define arcnet_outsb(addr, offset, buffer, count)			\

	outsb((addr) + (offset), buffer, count)



#define arcnet_inw(addr, offset)					\

	inw((addr) + (offset))

#define arcnet_outw(value, addr, offset)				\

	outw(value, (addr) + (offset))



#define arcnet_insw(addr, offset, buffer, count)			\

	insw((addr) + (offset), buffer, count)

#define arcnet_outsw(addr, offset, buffer, count)			\

	outsw((addr) + (offset), buffer, count)



#endif				/* __KERNEL__ */

#endif				/* _LINUX_ARCDEVICE_H */