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[adm5120] add initial support for hardware accelerated byte swapping

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@7708 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
juhosg
2007-06-22 10:16:47 +00:00
parent 45fb3b5d60
commit cb8ae31e96
6 changed files with 95 additions and 14 deletions
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38
target/linux/adm5120-2.6/patches/008-adm5120_hardware_swab.patch Normal file
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@@ -0,0 +1,38 @@
--- linux-2.6.19.2/include/asm-mips/byteorder.h 2007-01-10 20:10:37.000000000 +0100
+++ linux-2.6.19.2.new/include/asm-mips/byteorder.h 2007-05-16 21:14:47.000000000 +0200
@@ -58,6 +58,35 @@
#endif /* CONFIG_CPU_MIPSR2 */
+#ifdef CONFIG_ADM5120_HARDWARE_SWAB
+
+static __inline__ __attribute_const__ __u16 ___adm5120__swab16(__u16 x)
+{
+ __asm__ (
+ " sw %2, 0xC8(%1) \n"
+ " lhu %0, 0xCC(%1) \n"
+ : "=r" (x)
+ : "r" (0xB2000000), "r" (x));
+
+ return x;
+}
+
+static __inline__ __attribute_const__ __u32 ___adm5120__swab32(__u32 x)
+{
+ __asm__ (
+ " sw %2, 0xC8(%1) \n"
+ " lw %0, 0xCC(%1) \n"
+ : "=r" (x)
+ : "r" (0xB2000000), "r" (x));
+
+ return x;
+}
+
+#define __arch__swab16(x) ___adm5120__swab16(x)
+#define __arch__swab32(x) ___adm5120__swab32(x)
+
+#endif /* CONFIG_ADM5120_HARDWARE_SWAB */
+
#if !defined(__STRICT_ANSI__) || defined(__KERNEL__)
# define __BYTEORDER_HAS_U64__
# define __SWAB_64_THRU_32__