[PATCH] powerpc: merge include/asm-ppc*/checksum.h into include/asm-powerpc/checksum.h

Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

diff --git a/include/asm-powerpc/checksum.h b/include/asm-powerpc/checksum.h
new file mode 100644 (file)
index 0000000..d8354d8
--- /dev/null
+++ b/include/asm-powerpc/checksum.h
@@ -0,0 +1,132 @@
+#ifndef _ASM_POWERPC_CHECKSUM_H
+#define _ASM_POWERPC_CHECKSUM_H
+
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+/*
+ * This is a version of ip_compute_csum() optimized for IP headers,
+ * which always checksum on 4 octet boundaries.  ihl is the number
+ * of 32-bit words and is always >= 5.
+ */
+extern unsigned short ip_fast_csum(unsigned char * iph, unsigned int ihl);
+
+/*
+ * computes the checksum of the TCP/UDP pseudo-header
+ * returns a 16-bit checksum, already complemented
+ */
+extern unsigned short csum_tcpudp_magic(unsigned long saddr,
+                                       unsigned long daddr,
+                                       unsigned short len,
+                                       unsigned short proto,
+                                       unsigned int sum);
+
+/*
+ * computes the checksum of a memory block at buff, length len,
+ * and adds in "sum" (32-bit)
+ *
+ * returns a 32-bit number suitable for feeding into itself
+ * or csum_tcpudp_magic
+ *
+ * this function must be called with even lengths, except
+ * for the last fragment, which may be odd
+ *
+ * it's best to have buff aligned on a 32-bit boundary
+ */
+extern unsigned int csum_partial(const unsigned char * buff, int len,
+                                unsigned int sum);
+
+/*
+ * Computes the checksum of a memory block at src, length len,
+ * and adds in "sum" (32-bit), while copying the block to dst.
+ * If an access exception occurs on src or dst, it stores -EFAULT
+ * to *src_err or *dst_err respectively (if that pointer is not
+ * NULL), and, for an error on src, zeroes the rest of dst.
+ *
+ * Like csum_partial, this must be called with even lengths,
+ * except for the last fragment.
+ */
+extern unsigned int csum_partial_copy_generic(const char *src, char *dst,
+                                             int len, unsigned int sum,
+                                             int *src_err, int *dst_err);
+/*
+ * the same as csum_partial, but copies from src to dst while it
+ * checksums.
+ */
+unsigned int csum_partial_copy_nocheck(const char *src, 
+                                      char *dst, 
+                                      int len, 
+                                      unsigned int sum);
+
+#define csum_partial_copy_from_user(src, dst, len, sum, errp)   \
+        csum_partial_copy_generic((src), (dst), (len), (sum), (errp), NULL)
+
+#define csum_partial_copy_nocheck(src, dst, len, sum)   \
+        csum_partial_copy_generic((src), (dst), (len), (sum), NULL, NULL)
+
+
+/*
+ * turns a 32-bit partial checksum (e.g. from csum_partial) into a
+ * 1's complement 16-bit checksum.
+ */
+static inline unsigned int csum_fold(unsigned int sum)
+{
+       unsigned int tmp;
+
+       /* swap the two 16-bit halves of sum */
+       __asm__("rlwinm %0,%1,16,0,31" : "=r" (tmp) : "r" (sum));
+       /* if there is a carry from adding the two 16-bit halves,
+          it will carry from the lower half into the upper half,
+          giving us the correct sum in the upper half. */
+       sum = ~(sum + tmp) >> 16;
+       return sum;
+}
+
+/*
+ * this routine is used for miscellaneous IP-like checksums, mainly
+ * in icmp.c
+ */
+static inline unsigned short ip_compute_csum(unsigned char * buff, int len)
+{
+       return csum_fold(csum_partial(buff, len, 0));
+}
+
+#ifdef __powerpc64__
+static inline u32 csum_tcpudp_nofold(u32 saddr,
+                                     u32 daddr,
+                                     unsigned short len,
+                                     unsigned short proto,
+                                     unsigned int sum)
+{
+       unsigned long s = sum;
+
+       s += saddr;
+       s += daddr;
+       s += (proto << 16) + len;
+       s += (s >> 32);
+       return (u32) s;
+}
+#else
+static inline unsigned long csum_tcpudp_nofold(unsigned long saddr,
+                                                  unsigned long daddr,
+                                                  unsigned short len,
+                                                  unsigned short proto,
+                                                  unsigned int sum)
+{
+    __asm__("\n\
+       addc %0,%0,%1 \n\
+       adde %0,%0,%2 \n\
+       adde %0,%0,%3 \n\
+       addze %0,%0 \n\
+       "
+       : "=r" (sum)
+       : "r" (daddr), "r"(saddr), "r"((proto<<16)+len), "0"(sum));
+    return sum;
+}
+
+#endif
+#endif

diff --git a/include/asm-ppc/checksum.h b/include/asm-ppc/checksum.h
deleted file mode 100644 (file)
index cf953a9..0000000
--- a/include/asm-ppc/checksum.h
+++ /dev/null
@@ -1,107 +0,0 @@
-#ifdef __KERNEL__
-#ifndef _PPC_CHECKSUM_H
-#define _PPC_CHECKSUM_H
-
-
-/*
- * computes the checksum of a memory block at buff, length len,
- * and adds in "sum" (32-bit)
- *
- * returns a 32-bit number suitable for feeding into itself
- * or csum_tcpudp_magic
- *
- * this function must be called with even lengths, except
- * for the last fragment, which may be odd
- *
- * it's best to have buff aligned on a 32-bit boundary
- */
-extern unsigned int csum_partial(const unsigned char * buff, int len,
-                                unsigned int sum);
-
-/*
- * Computes the checksum of a memory block at src, length len,
- * and adds in "sum" (32-bit), while copying the block to dst.
- * If an access exception occurs on src or dst, it stores -EFAULT
- * to *src_err or *dst_err respectively (if that pointer is not
- * NULL), and, for an error on src, zeroes the rest of dst.
- *
- * Like csum_partial, this must be called with even lengths,
- * except for the last fragment.
- */
-extern unsigned int csum_partial_copy_generic(const char *src, char *dst,
-                                             int len, unsigned int sum,
-                                             int *src_err, int *dst_err);
-
-#define csum_partial_copy_from_user(src, dst, len, sum, errp)  \
-       csum_partial_copy_generic((__force void *)(src), (dst), (len), (sum), (errp), NULL)
-
-/* FIXME: this needs to be written to really do no check -- Cort */
-#define csum_partial_copy_nocheck(src, dst, len, sum)  \
-       csum_partial_copy_generic((src), (dst), (len), (sum), NULL, NULL)
-
-/*
- * turns a 32-bit partial checksum (e.g. from csum_partial) into a
- * 1's complement 16-bit checksum.
- */
-static inline unsigned int csum_fold(unsigned int sum)
-{
-       unsigned int tmp;
-
-       /* swap the two 16-bit halves of sum */
-       __asm__("rlwinm %0,%1,16,0,31" : "=r" (tmp) : "r" (sum));
-       /* if there is a carry from adding the two 16-bit halves,
-          it will carry from the lower half into the upper half,
-          giving us the correct sum in the upper half. */
-       sum = ~(sum + tmp) >> 16;
-       return sum;
-}
-
-/*
- * this routine is used for miscellaneous IP-like checksums, mainly
- * in icmp.c
- */
-static inline unsigned short ip_compute_csum(unsigned char * buff, int len)
-{
-       return csum_fold(csum_partial(buff, len, 0));
-}
-
-/*
- * FIXME: I swiped this one from the sparc and made minor modifications.
- * It may not be correct.  -- Cort
- */
-static inline unsigned long csum_tcpudp_nofold(unsigned long saddr,
-                                                  unsigned long daddr,
-                                                  unsigned short len,
-                                                  unsigned short proto,
-                                                  unsigned int sum)
-{
-    __asm__("\n\
-       addc %0,%0,%1 \n\
-       adde %0,%0,%2 \n\
-       adde %0,%0,%3 \n\
-       addze %0,%0 \n\
-       "
-       : "=r" (sum)
-       : "r" (daddr), "r"(saddr), "r"((proto<<16)+len), "0"(sum));
-    return sum;
-}
-
-/*
- * This is a version of ip_compute_csum() optimized for IP headers,
- * which always checksum on 4 octet boundaries.  ihl is the number
- * of 32-bit words and is always >= 5.
- */
-extern unsigned short ip_fast_csum(unsigned char * iph, unsigned int ihl);
-
-/*
- * computes the checksum of the TCP/UDP pseudo-header
- * returns a 16-bit checksum, already complemented
- */
-extern unsigned short csum_tcpudp_magic(unsigned long saddr,
-                                       unsigned long daddr,
-                                       unsigned short len,
-                                       unsigned short proto,
-                                       unsigned int sum);
-
-#endif
-#endif /* __KERNEL__ */

diff --git a/include/asm-ppc64/checksum.h b/include/asm-ppc64/checksum.h
deleted file mode 100644 (file)
index d22d446..0000000
--- a/include/asm-ppc64/checksum.h
+++ /dev/null
@@ -1,107 +0,0 @@
-#ifndef _PPC64_CHECKSUM_H
-#define _PPC64_CHECKSUM_H
-
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-/*
- * This is a version of ip_compute_csum() optimized for IP headers,
- * which always checksum on 4 octet boundaries.  ihl is the number
- * of 32-bit words and is always >= 5.
- */
-extern unsigned short ip_fast_csum(unsigned char * iph, unsigned int ihl);
-
-/*
- * computes the checksum of the TCP/UDP pseudo-header
- * returns a 16-bit checksum, already complemented
- */
-extern unsigned short csum_tcpudp_magic(unsigned long saddr,
-                                       unsigned long daddr,
-                                       unsigned short len,
-                                       unsigned short proto,
-                                       unsigned int sum);
-
-/*
- * computes the checksum of a memory block at buff, length len,
- * and adds in "sum" (32-bit)
- *
- * returns a 32-bit number suitable for feeding into itself
- * or csum_tcpudp_magic
- *
- * this function must be called with even lengths, except
- * for the last fragment, which may be odd
- *
- * it's best to have buff aligned on a 32-bit boundary
- */
-extern unsigned int csum_partial(const unsigned char * buff, int len,
-                                unsigned int sum);
-
-/*
- * the same as csum_partial, but copies from src to dst while it
- * checksums
- */
-extern unsigned int csum_partial_copy_generic(const char *src, char *dst,
-                                             int len, unsigned int sum,
-                                             int *src_err, int *dst_err);
-/*
- * the same as csum_partial, but copies from src to dst while it
- * checksums.
- */
-
-unsigned int csum_partial_copy_nocheck(const char *src, 
-                                      char *dst, 
-                                      int len, 
-                                      unsigned int sum);
-
-/*
- * turns a 32-bit partial checksum (e.g. from csum_partial) into a
- * 1's complement 16-bit checksum.
- */
-static inline unsigned int csum_fold(unsigned int sum)
-{
-       unsigned int tmp;
-
-       /* swap the two 16-bit halves of sum */
-       __asm__("rlwinm %0,%1,16,0,31" : "=r" (tmp) : "r" (sum));
-       /* if there is a carry from adding the two 16-bit halves,
-          it will carry from the lower half into the upper half,
-          giving us the correct sum in the upper half. */
-       sum = ~(sum + tmp) >> 16;
-       return sum;
-}
-
-/*
- * this routine is used for miscellaneous IP-like checksums, mainly
- * in icmp.c
- */
-static inline unsigned short ip_compute_csum(unsigned char * buff, int len)
-{
-       return csum_fold(csum_partial(buff, len, 0));
-}
-
-#define csum_partial_copy_from_user(src, dst, len, sum, errp)   \
-        csum_partial_copy_generic((src), (dst), (len), (sum), (errp), NULL)
-
-#define csum_partial_copy_nocheck(src, dst, len, sum)   \
-        csum_partial_copy_generic((src), (dst), (len), (sum), NULL, NULL)
-
-static inline u32 csum_tcpudp_nofold(u32 saddr,
-                                     u32 daddr,
-                                     unsigned short len,
-                                     unsigned short proto,
-                                     unsigned int sum)
-{
-       unsigned long s = sum;
-
-       s += saddr;
-       s += daddr;
-       s += (proto << 16) + len;
-       s += (s >> 32);
-       return (u32) s;
-}
-
-#endif