mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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f5e706ad88
With this commit all sparc64 header files are moved to asm-sparc.
The remaining files (71 files) were too different to be trivially
merged so divide them up in a _32.h and a _64.h file which
are both included from the file with no bit size.
The following script were used:
cd include
FILES=`wc -l asm-sparc64/*h | grep -v '^ 1' | cut -b 20-`
for FILE in ${FILES}; do
echo $FILE:
BASE=`echo $FILE | cut -d '.' -f 1`
FN32=${BASE}_32.h
FN64=${BASE}_64.h
GUARD=___ASM_SPARC_`echo $BASE | tr '-' '_' | tr [:lower:] [:upper:]`_H
git mv asm-sparc/$FILE asm-sparc/$FN32
git mv asm-sparc64/$FILE asm-sparc/$FN64
echo git mv done
printf "#ifndef %s\n" $GUARD > asm-sparc/$FILE
printf "#define %s\n" $GUARD >> asm-sparc/$FILE
printf "#if defined(__sparc__) && defined(__arch64__)\n" >> asm-sparc/$FILE
printf "#include <asm-sparc/%s>\n" $FN64 >> asm-sparc/$FILE
printf "#else\n" >> asm-sparc/$FILE
printf "#include <asm-sparc/%s>\n" $FN32 >> asm-sparc/$FILE
printf "#endif\n" >> asm-sparc/$FILE
printf "#endif\n" >> asm-sparc/$FILE
git add asm-sparc/$FILE
echo new file done
printf "#include <asm-sparc/%s>\n" $FILE > asm-sparc64/$FILE
git add asm-sparc64/$FILE
echo sparc64 file done
done
The guard contains three '_' to avoid conflict with existing guards.
In additing the two Kbuild files are emptied to avoid breaking
headers_* targets.
We will reintroduce the exported header files when the necessary
kbuild changes are merged.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
168 lines
4.3 KiB
C
168 lines
4.3 KiB
C
#ifndef __SPARC64_CHECKSUM_H
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#define __SPARC64_CHECKSUM_H
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/* checksum.h: IP/UDP/TCP checksum routines on the V9.
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*
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* Copyright(C) 1995 Linus Torvalds
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* Copyright(C) 1995 Miguel de Icaza
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* Copyright(C) 1996 David S. Miller
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* Copyright(C) 1996 Eddie C. Dost
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* Copyright(C) 1997 Jakub Jelinek
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*
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* derived from:
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* Alpha checksum c-code
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* ix86 inline assembly
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* RFC1071 Computing the Internet Checksum
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*/
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#include <linux/in6.h>
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#include <asm/uaccess.h>
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/* computes the checksum of a memory block at buff, length len,
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* and adds in "sum" (32-bit)
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*
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* returns a 32-bit number suitable for feeding into itself
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* or csum_tcpudp_magic
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*
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* this function must be called with even lengths, except
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* for the last fragment, which may be odd
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*
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* it's best to have buff aligned on a 32-bit boundary
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*/
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extern __wsum csum_partial(const void * buff, int len, __wsum sum);
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/* the same as csum_partial, but copies from user space while it
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* checksums
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*
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* here even more important to align src and dst on a 32-bit (or even
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* better 64-bit) boundary
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*/
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extern __wsum csum_partial_copy_nocheck(const void *src, void *dst,
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int len, __wsum sum);
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extern long __csum_partial_copy_from_user(const void __user *src,
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void *dst, int len,
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__wsum sum);
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static inline __wsum
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csum_partial_copy_from_user(const void __user *src,
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void *dst, int len,
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__wsum sum, int *err)
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{
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long ret = __csum_partial_copy_from_user(src, dst, len, sum);
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if (ret < 0)
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*err = -EFAULT;
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return (__force __wsum) ret;
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}
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/*
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* Copy and checksum to user
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*/
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#define HAVE_CSUM_COPY_USER
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extern long __csum_partial_copy_to_user(const void *src,
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void __user *dst, int len,
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__wsum sum);
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static inline __wsum
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csum_and_copy_to_user(const void *src,
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void __user *dst, int len,
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__wsum sum, int *err)
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{
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long ret = __csum_partial_copy_to_user(src, dst, len, sum);
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if (ret < 0)
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*err = -EFAULT;
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return (__force __wsum) ret;
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}
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/* ihl is always 5 or greater, almost always is 5, and iph is word aligned
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* the majority of the time.
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*/
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extern __sum16 ip_fast_csum(const void *iph, unsigned int ihl);
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/* Fold a partial checksum without adding pseudo headers. */
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static inline __sum16 csum_fold(__wsum sum)
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{
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unsigned int tmp;
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__asm__ __volatile__(
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" addcc %0, %1, %1\n"
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" srl %1, 16, %1\n"
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" addc %1, %%g0, %1\n"
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" xnor %%g0, %1, %0\n"
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: "=&r" (sum), "=r" (tmp)
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: "0" (sum), "1" ((__force u32)sum<<16)
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: "cc");
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return (__force __sum16)sum;
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}
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static inline __wsum csum_tcpudp_nofold(__be32 saddr, __be32 daddr,
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unsigned int len,
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unsigned short proto,
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__wsum sum)
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{
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__asm__ __volatile__(
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" addcc %1, %0, %0\n"
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" addccc %2, %0, %0\n"
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" addccc %3, %0, %0\n"
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" addc %0, %%g0, %0\n"
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: "=r" (sum), "=r" (saddr)
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: "r" (daddr), "r" (proto + len), "0" (sum), "1" (saddr)
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: "cc");
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return sum;
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}
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/*
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* computes the checksum of the TCP/UDP pseudo-header
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* returns a 16-bit checksum, already complemented
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*/
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static inline __sum16 csum_tcpudp_magic(__be32 saddr, __be32 daddr,
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unsigned short len,
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unsigned short proto,
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__wsum sum)
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{
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return csum_fold(csum_tcpudp_nofold(saddr,daddr,len,proto,sum));
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}
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#define _HAVE_ARCH_IPV6_CSUM
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static inline __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
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const struct in6_addr *daddr,
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__u32 len, unsigned short proto,
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__wsum sum)
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{
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__asm__ __volatile__ (
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" addcc %3, %4, %%g7\n"
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" addccc %5, %%g7, %%g7\n"
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" lduw [%2 + 0x0c], %%g2\n"
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" lduw [%2 + 0x08], %%g3\n"
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" addccc %%g2, %%g7, %%g7\n"
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" lduw [%2 + 0x04], %%g2\n"
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" addccc %%g3, %%g7, %%g7\n"
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" lduw [%2 + 0x00], %%g3\n"
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" addccc %%g2, %%g7, %%g7\n"
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" lduw [%1 + 0x0c], %%g2\n"
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" addccc %%g3, %%g7, %%g7\n"
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" lduw [%1 + 0x08], %%g3\n"
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" addccc %%g2, %%g7, %%g7\n"
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" lduw [%1 + 0x04], %%g2\n"
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" addccc %%g3, %%g7, %%g7\n"
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" lduw [%1 + 0x00], %%g3\n"
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" addccc %%g2, %%g7, %%g7\n"
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" addccc %%g3, %%g7, %0\n"
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" addc 0, %0, %0\n"
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: "=&r" (sum)
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: "r" (saddr), "r" (daddr), "r"(htonl(len)),
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"r"(htonl(proto)), "r"(sum)
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: "g2", "g3", "g7", "cc");
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return csum_fold(sum);
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}
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/* this routine is used for miscellaneous IP-like checksums, mainly in icmp.c */
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static inline __sum16 ip_compute_csum(const void *buff, int len)
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{
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return csum_fold(csum_partial(buff, len, 0));
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}
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#endif /* !(__SPARC64_CHECKSUM_H) */
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