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OpenCloudOS-Kernel/arch/microblaze/include/asm/checksum.h

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microblaze_v8: checksum support Reviewed-by: Ingo Molnar <mingo@elte.hu> Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com> Acked-by: John Linn <john.linn@xilinx.com> Acked-by: John Williams <john.williams@petalogix.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-03-27 21:25:22 +08:00
/*
* Copyright (C) 2008 Michal Simek <monstr@monstr.eu>
* Copyright (C) 2006 Atmark Techno, Inc.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#ifndef _ASM_MICROBLAZE_CHECKSUM_H
#define _ASM_MICROBLAZE_CHECKSUM_H
/*
* computes the checksum of the TCP/UDP pseudo-header
* returns a 16-bit checksum, already complemented
*/
microblaze: use the generic lib/checksum.c The microblaze checksum code is mostly identical to the asm-generic+lib version, so use that instead. Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-06-19 01:55:32 +08:00
#define csum_tcpudp_nofold csum_tcpudp_nofold
microblaze_v8: checksum support Reviewed-by: Ingo Molnar <mingo@elte.hu> Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com> Acked-by: John Linn <john.linn@xilinx.com> Acked-by: John Williams <john.williams@petalogix.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-03-27 21:25:22 +08:00
static inline __wsum
csum_tcpudp_nofold(__be32 saddr, __be32 daddr, unsigned short len,
unsigned short proto, __wsum sum)
{
__asm__("add %0, %0, %1\n\t"
"addc %0, %0, %2\n\t"
"addc %0, %0, %3\n\t"
"addc %0, %0, r0\n\t"
: "+&d" (sum)
microblaze: Add support for little-endian Microblaze Microblaze little-endian toolchain exports __MICROBLAZEEL__ which is used in the kernel to identify little/big endian. The most of the changes are in loading values from DTB which is always big endian. Little endian platforms are based on new AXI bus which has impact to early uartlite initialization. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-09-28 14:04:14 +08:00
: "d" (saddr), "d" (daddr),
#ifdef __MICROBLAZEEL__
"d" ((len + proto) << 8)
#else
"d" (len + proto)
#endif
);
microblaze_v8: checksum support Reviewed-by: Ingo Molnar <mingo@elte.hu> Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com> Acked-by: John Linn <john.linn@xilinx.com> Acked-by: John Williams <john.williams@petalogix.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-03-27 21:25:22 +08:00
return sum;
}
microblaze: use the generic lib/checksum.c The microblaze checksum code is mostly identical to the asm-generic+lib version, so use that instead. Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-06-19 01:55:32 +08:00
#include <asm-generic/checksum.h>
microblaze_v8: checksum support Reviewed-by: Ingo Molnar <mingo@elte.hu> Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com> Acked-by: John Linn <john.linn@xilinx.com> Acked-by: John Williams <john.williams@petalogix.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-03-27 21:25:22 +08:00
#endif /* _ASM_MICROBLAZE_CHECKSUM_H */