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| author | Joe Perches <joe@perches.com> | 2015-05-05 10:06:06 -0700 |
|---|---|---|
| committer | Michael Grzeschik <m.grzeschik@pengutronix.de> | 2015-09-23 08:44:26 +0200 |
| commit | 0fec65130b9f11a73d74f47025491f97f82ba070 (patch) | |
| tree | 52b39e84ef4717d17e62a0d9401e8d7f7f718f34 /drivers/net/arcnet/arcdevice.h | |
| parent | e5fcfc1f8d3cfaf432a93d39df3e5d7718c58848 (diff) | |
| download | lwn-0fec65130b9f11a73d74f47025491f97f82ba070.tar.gz lwn-0fec65130b9f11a73d74f47025491f97f82ba070.zip | |
arcnet: com20020: Use arcnet_<I/O> routines
Simplify and make consistent the current uses of inb/outb
by using the newly introduced arcnet_<I/O> equivalents.
o Add new #defines for register offsets
There is an register offset, 8, that is unnamed and used as-is.
o Remove old #defines that included the ioaddr
o Remove obfuscating macros by expanding them in-place where appropriate
o Create static inline com20020_set_subaddress for the SET_SUBADR macro
There is an unused arcnet config entry CONFIGSA100_CT6001 which added a
special #define BUS_ALIGN which was introduced but never used in fullhist git
tree commit 22cfce4b82b0 ("[ARCNET]: Fixes.") in Nov 2004 for Linux v2.6.10.
This BUS_ALIGN #define tries to allow 8 bit devices to work on a 16 bit
bus by aligning addresses to 16 bit boundaries.
Move this currently unused CONFIG_SA1100_CT6001 BUS_ALIGN macro from
com20020.h to arcdevice.h.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Diffstat (limited to 'drivers/net/arcnet/arcdevice.h')
| -rw-r--r-- | drivers/net/arcnet/arcdevice.h | 22 |
1 files changed, 14 insertions, 8 deletions
diff --git a/drivers/net/arcnet/arcdevice.h b/drivers/net/arcnet/arcdevice.h index 95e7ed6781c3..4afa32b5e9f1 100644 --- a/drivers/net/arcnet/arcdevice.h +++ b/drivers/net/arcnet/arcdevice.h @@ -344,28 +344,34 @@ void arcnet_timeout(struct net_device *dev); /* I/O equivalents */ +#ifdef CONFIG_SA1100_CT6001 +#define BUS_ALIGN 2 /* 8 bit device on a 16 bit bus - needs padding */ +#else +#define BUS_ALIGN 1 +#endif + /* 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)) + inb((addr) + BUS_ALIGN * (offset)) #define arcnet_outb(value, addr, offset) \ - outb(value, (addr) + (offset)) + outb(value, (addr) + BUS_ALIGN * (offset)) #define arcnet_insb(addr, offset, buffer, count) \ - insb((addr) + (offset), buffer, count) + insb((addr) + BUS_ALIGN * (offset), buffer, count) #define arcnet_outsb(addr, offset, buffer, count) \ - outsb((addr) + (offset), buffer, count) + outsb((addr) + BUS_ALIGN * (offset), buffer, count) #define arcnet_inw(addr, offset) \ - inw((addr) + (offset)) + inw((addr) + BUS_ALIGN * (offset)) #define arcnet_outw(value, addr, offset) \ - outw(value, (addr) + (offset)) + outw(value, (addr) + BUS_ALIGN * (offset)) #define arcnet_insw(addr, offset, buffer, count) \ - insw((addr) + (offset), buffer, count) + insw((addr) + BUS_ALIGN * (offset), buffer, count) #define arcnet_outsw(addr, offset, buffer, count) \ - outsw((addr) + (offset), buffer, count) + outsw((addr) + BUS_ALIGN * (offset), buffer, count) #endif /* __KERNEL__ */ #endif /* _LINUX_ARCDEVICE_H */ |