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authorJoe Perches <joe@perches.com>2015-05-05 10:06:05 -0700
committerMichael Grzeschik <m.grzeschik@pengutronix.de>2015-09-23 08:44:26 +0200
commite5fcfc1f8d3cfaf432a93d39df3e5d7718c58848 (patch)
tree554a74f45005628e2e5fe7eede627bcc677d0a9f /drivers/net/arcnet
parent4e299b922c44d242ac855805aee94d938b06944f (diff)
downloadlinux-e5fcfc1f8d3cfaf432a93d39df3e5d7718c58848.tar.bz2
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: Joe Perches <joe@perches.com> Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Diffstat (limited to 'drivers/net/arcnet')
-rw-r--r--drivers/net/arcnet/arcdevice.h25
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/net/arcnet/arcdevice.h b/drivers/net/arcnet/arcdevice.h
index 9ca135d0f114..95e7ed6781c3 100644
--- a/drivers/net/arcnet/arcdevice.h
+++ b/drivers/net/arcnet/arcdevice.h
@@ -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 */