[adm5120] add initial support for hardware accelerated byte swapping
[openwrt/svn-archive/archive.git] / target / linux / adm5120-2.6 / patches / 008-adm5120_hardware_swab.patch
1 --- linux-2.6.19.2/include/asm-mips/byteorder.h 2007-01-10 20:10:37.000000000 +0100
2 +++ linux-2.6.19.2.new/include/asm-mips/byteorder.h 2007-05-16 21:14:47.000000000 +0200
3 @@ -58,6 +58,35 @@
4
5 #endif /* CONFIG_CPU_MIPSR2 */
6
7 +#ifdef CONFIG_ADM5120_HARDWARE_SWAB
8 +
9 +static __inline__ __attribute_const__ __u16 ___adm5120__swab16(__u16 x)
10 +{
11 + __asm__ (
12 + " sw %2, 0xC8(%1) \n"
13 + " lhu %0, 0xCC(%1) \n"
14 + : "=r" (x)
15 + : "r" (0xB2000000), "r" (x));
16 +
17 + return x;
18 +}
19 +
20 +static __inline__ __attribute_const__ __u32 ___adm5120__swab32(__u32 x)
21 +{
22 + __asm__ (
23 + " sw %2, 0xC8(%1) \n"
24 + " lw %0, 0xCC(%1) \n"
25 + : "=r" (x)
26 + : "r" (0xB2000000), "r" (x));
27 +
28 + return x;
29 +}
30 +
31 +#define __arch__swab16(x) ___adm5120__swab16(x)
32 +#define __arch__swab32(x) ___adm5120__swab32(x)
33 +
34 +#endif /* CONFIG_ADM5120_HARDWARE_SWAB */
35 +
36 #if !defined(__STRICT_ANSI__) || defined(__KERNEL__)
37 # define __BYTEORDER_HAS_U64__
38 # define __SWAB_64_THRU_32__