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author | Stuart Menefy <stuart.menefy@st.com> | 2009-08-24 08:26:39 (GMT) |
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committer | Paul Mundt <lethal@linux-sh.org> | 2009-08-24 08:26:39 (GMT) |
commit | 8af57f8b4c0ada9063b1cee9d81e3e59f04ce5a2 (patch) | |
tree | 0a5395049fc234ad9cdbe97641628152afe4c1c7 /arch/sh | |
parent | 7d9c035150897c2bebedae280505513dbdef2abc (diff) | |
download | linux-8af57f8b4c0ada9063b1cee9d81e3e59f04ce5a2.tar.xz |
sh: generic_in/outs{bwl} optimizations.
After performing the port2addr conversion, and checking that the data is
correctly aligned, simply call __raw_readsX/writesX. These have already been
optimised.
Signed-off-by: Stuart Menefy <stuart.menefy@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh')
-rw-r--r-- | arch/sh/kernel/io_generic.c | 50 |
1 files changed, 8 insertions, 42 deletions
diff --git a/arch/sh/kernel/io_generic.c b/arch/sh/kernel/io_generic.c index 5a7f554..4ff5072 100644 --- a/arch/sh/kernel/io_generic.c +++ b/arch/sh/kernel/io_generic.c @@ -73,35 +73,19 @@ u32 generic_inl_p(unsigned long port) void generic_insb(unsigned long port, void *dst, unsigned long count) { - volatile u8 *port_addr; - u8 *buf = dst; - - port_addr = (volatile u8 __force *)__ioport_map(port, 1); - while (count--) - *buf++ = *port_addr; + __raw_readsb(__ioport_map(port, 1), dst, count); + dummy_read(); } void generic_insw(unsigned long port, void *dst, unsigned long count) { - volatile u16 *port_addr; - u16 *buf = dst; - - port_addr = (volatile u16 __force *)__ioport_map(port, 2); - while (count--) - *buf++ = *port_addr; - + __raw_readsw(__ioport_map(port, 2), dst, count); dummy_read(); } void generic_insl(unsigned long port, void *dst, unsigned long count) { - volatile u32 *port_addr; - u32 *buf = dst; - - port_addr = (volatile u32 __force *)__ioport_map(port, 4); - while (count--) - *buf++ = *port_addr; - + __raw_readsl(__ioport_map(port, 4), dst, count); dummy_read(); } @@ -145,37 +129,19 @@ void generic_outl_p(u32 b, unsigned long port) */ void generic_outsb(unsigned long port, const void *src, unsigned long count) { - volatile u8 *port_addr; - const u8 *buf = src; - - port_addr = (volatile u8 __force *)__ioport_map(port, 1); - - while (count--) - *port_addr = *buf++; + __raw_writesb(__ioport_map(port, 1), src, count); + dummy_read(); } void generic_outsw(unsigned long port, const void *src, unsigned long count) { - volatile u16 *port_addr; - const u16 *buf = src; - - port_addr = (volatile u16 __force *)__ioport_map(port, 2); - - while (count--) - *port_addr = *buf++; - + __raw_writesw(__ioport_map(port, 2), src, count); dummy_read(); } void generic_outsl(unsigned long port, const void *src, unsigned long count) { - volatile u32 *port_addr; - const u32 *buf = src; - - port_addr = (volatile u32 __force *)__ioport_map(port, 4); - while (count--) - *port_addr = *buf++; - + __raw_writesl(__ioport_map(port, 4), src, count); dummy_read(); } |