diff options
author | Sam Ravnborg <sam@ravnborg.org> | 2008-07-18 00:55:51 -0400 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2008-07-18 00:55:51 -0400 |
commit | f5e706ad886b6a5eb59637830110b09ccebf01c5 (patch) | |
tree | ea043a0a28e16a2ac6395c35d737f52698a165b7 /include/asm-sparc/checksum.h | |
parent | 5e3609f60c09f0f15f71f80c6d7933b2c7be71a6 (diff) |
sparc: join the remaining header files
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>
Diffstat (limited to 'include/asm-sparc/checksum.h')
-rw-r--r-- | include/asm-sparc/checksum.h | 249 |
1 files changed, 8 insertions, 241 deletions
diff --git a/include/asm-sparc/checksum.h b/include/asm-sparc/checksum.h index d044ddb5a3cf..4e3553d4f6e1 100644 --- a/include/asm-sparc/checksum.h +++ b/include/asm-sparc/checksum.h | |||
@@ -1,241 +1,8 @@ | |||
1 | #ifndef __SPARC_CHECKSUM_H | 1 | #ifndef ___ASM_SPARC_CHECKSUM_H |
2 | #define __SPARC_CHECKSUM_H | 2 | #define ___ASM_SPARC_CHECKSUM_H |
3 | 3 | #if defined(__sparc__) && defined(__arch64__) | |
4 | /* checksum.h: IP/UDP/TCP checksum routines on the Sparc. | 4 | #include <asm-sparc/checksum_64.h> |
5 | * | 5 | #else |
6 | * Copyright(C) 1995 Linus Torvalds | 6 | #include <asm-sparc/checksum_32.h> |
7 | * Copyright(C) 1995 Miguel de Icaza | 7 | #endif |
8 | * Copyright(C) 1996 David S. Miller | 8 | #endif |
9 | * Copyright(C) 1996 Eddie C. Dost | ||
10 | * Copyright(C) 1997 Jakub Jelinek | ||
11 | * | ||
12 | * derived from: | ||
13 | * Alpha checksum c-code | ||
14 | * ix86 inline assembly | ||
15 | * RFC1071 Computing the Internet Checksum | ||
16 | */ | ||
17 | |||
18 | #include <linux/in6.h> | ||
19 | #include <asm/uaccess.h> | ||
20 | |||
21 | /* computes the checksum of a memory block at buff, length len, | ||
22 | * and adds in "sum" (32-bit) | ||
23 | * | ||
24 | * returns a 32-bit number suitable for feeding into itself | ||
25 | * or csum_tcpudp_magic | ||
26 | * | ||
27 | * this function must be called with even lengths, except | ||
28 | * for the last fragment, which may be odd | ||
29 | * | ||
30 | * it's best to have buff aligned on a 32-bit boundary | ||
31 | */ | ||
32 | extern __wsum csum_partial(const void *buff, int len, __wsum sum); | ||
33 | |||
34 | /* the same as csum_partial, but copies from fs:src while it | ||
35 | * checksums | ||
36 | * | ||
37 | * here even more important to align src and dst on a 32-bit (or even | ||
38 | * better 64-bit) boundary | ||
39 | */ | ||
40 | |||
41 | extern unsigned int __csum_partial_copy_sparc_generic (const unsigned char *, unsigned char *); | ||
42 | |||
43 | static inline __wsum | ||
44 | csum_partial_copy_nocheck(const void *src, void *dst, int len, __wsum sum) | ||
45 | { | ||
46 | register unsigned int ret asm("o0") = (unsigned int)src; | ||
47 | register char *d asm("o1") = dst; | ||
48 | register int l asm("g1") = len; | ||
49 | |||
50 | __asm__ __volatile__ ( | ||
51 | "call __csum_partial_copy_sparc_generic\n\t" | ||
52 | " mov %6, %%g7\n" | ||
53 | : "=&r" (ret), "=&r" (d), "=&r" (l) | ||
54 | : "0" (ret), "1" (d), "2" (l), "r" (sum) | ||
55 | : "o2", "o3", "o4", "o5", "o7", | ||
56 | "g2", "g3", "g4", "g5", "g7", | ||
57 | "memory", "cc"); | ||
58 | return (__force __wsum)ret; | ||
59 | } | ||
60 | |||
61 | static inline __wsum | ||
62 | csum_partial_copy_from_user(const void __user *src, void *dst, int len, | ||
63 | __wsum sum, int *err) | ||
64 | { | ||
65 | register unsigned long ret asm("o0") = (unsigned long)src; | ||
66 | register char *d asm("o1") = dst; | ||
67 | register int l asm("g1") = len; | ||
68 | register __wsum s asm("g7") = sum; | ||
69 | |||
70 | __asm__ __volatile__ ( | ||
71 | ".section __ex_table,#alloc\n\t" | ||
72 | ".align 4\n\t" | ||
73 | ".word 1f,2\n\t" | ||
74 | ".previous\n" | ||
75 | "1:\n\t" | ||
76 | "call __csum_partial_copy_sparc_generic\n\t" | ||
77 | " st %8, [%%sp + 64]\n" | ||
78 | : "=&r" (ret), "=&r" (d), "=&r" (l), "=&r" (s) | ||
79 | : "0" (ret), "1" (d), "2" (l), "3" (s), "r" (err) | ||
80 | : "o2", "o3", "o4", "o5", "o7", "g2", "g3", "g4", "g5", | ||
81 | "cc", "memory"); | ||
82 | return (__force __wsum)ret; | ||
83 | } | ||
84 | |||
85 | static inline __wsum | ||
86 | csum_partial_copy_to_user(const void *src, void __user *dst, int len, | ||
87 | __wsum sum, int *err) | ||
88 | { | ||
89 | if (!access_ok (VERIFY_WRITE, dst, len)) { | ||
90 | *err = -EFAULT; | ||
91 | return sum; | ||
92 | } else { | ||
93 | register unsigned long ret asm("o0") = (unsigned long)src; | ||
94 | register char __user *d asm("o1") = dst; | ||
95 | register int l asm("g1") = len; | ||
96 | register __wsum s asm("g7") = sum; | ||
97 | |||
98 | __asm__ __volatile__ ( | ||
99 | ".section __ex_table,#alloc\n\t" | ||
100 | ".align 4\n\t" | ||
101 | ".word 1f,1\n\t" | ||
102 | ".previous\n" | ||
103 | "1:\n\t" | ||
104 | "call __csum_partial_copy_sparc_generic\n\t" | ||
105 | " st %8, [%%sp + 64]\n" | ||
106 | : "=&r" (ret), "=&r" (d), "=&r" (l), "=&r" (s) | ||
107 | : "0" (ret), "1" (d), "2" (l), "3" (s), "r" (err) | ||
108 | : "o2", "o3", "o4", "o5", "o7", | ||
109 | "g2", "g3", "g4", "g5", | ||
110 | "cc", "memory"); | ||
111 | return (__force __wsum)ret; | ||
112 | } | ||
113 | } | ||
114 | |||
115 | #define HAVE_CSUM_COPY_USER | ||
116 | #define csum_and_copy_to_user csum_partial_copy_to_user | ||
117 | |||
118 | /* ihl is always 5 or greater, almost always is 5, and iph is word aligned | ||
119 | * the majority of the time. | ||
120 | */ | ||
121 | static inline __sum16 ip_fast_csum(const void *iph, unsigned int ihl) | ||
122 | { | ||
123 | __sum16 sum; | ||
124 | |||
125 | /* Note: We must read %2 before we touch %0 for the first time, | ||
126 | * because GCC can legitimately use the same register for | ||
127 | * both operands. | ||
128 | */ | ||
129 | __asm__ __volatile__("sub\t%2, 4, %%g4\n\t" | ||
130 | "ld\t[%1 + 0x00], %0\n\t" | ||
131 | "ld\t[%1 + 0x04], %%g2\n\t" | ||
132 | "ld\t[%1 + 0x08], %%g3\n\t" | ||
133 | "addcc\t%%g2, %0, %0\n\t" | ||
134 | "addxcc\t%%g3, %0, %0\n\t" | ||
135 | "ld\t[%1 + 0x0c], %%g2\n\t" | ||
136 | "ld\t[%1 + 0x10], %%g3\n\t" | ||
137 | "addxcc\t%%g2, %0, %0\n\t" | ||
138 | "addx\t%0, %%g0, %0\n" | ||
139 | "1:\taddcc\t%%g3, %0, %0\n\t" | ||
140 | "add\t%1, 4, %1\n\t" | ||
141 | "addxcc\t%0, %%g0, %0\n\t" | ||
142 | "subcc\t%%g4, 1, %%g4\n\t" | ||
143 | "be,a\t2f\n\t" | ||
144 | "sll\t%0, 16, %%g2\n\t" | ||
145 | "b\t1b\n\t" | ||
146 | "ld\t[%1 + 0x10], %%g3\n" | ||
147 | "2:\taddcc\t%0, %%g2, %%g2\n\t" | ||
148 | "srl\t%%g2, 16, %0\n\t" | ||
149 | "addx\t%0, %%g0, %0\n\t" | ||
150 | "xnor\t%%g0, %0, %0" | ||
151 | : "=r" (sum), "=&r" (iph) | ||
152 | : "r" (ihl), "1" (iph) | ||
153 | : "g2", "g3", "g4", "cc", "memory"); | ||
154 | return sum; | ||
155 | } | ||
156 | |||
157 | /* Fold a partial checksum without adding pseudo headers. */ | ||
158 | static inline __sum16 csum_fold(__wsum sum) | ||
159 | { | ||
160 | unsigned int tmp; | ||
161 | |||
162 | __asm__ __volatile__("addcc\t%0, %1, %1\n\t" | ||
163 | "srl\t%1, 16, %1\n\t" | ||
164 | "addx\t%1, %%g0, %1\n\t" | ||
165 | "xnor\t%%g0, %1, %0" | ||
166 | : "=&r" (sum), "=r" (tmp) | ||
167 | : "0" (sum), "1" ((__force u32)sum<<16) | ||
168 | : "cc"); | ||
169 | return (__force __sum16)sum; | ||
170 | } | ||
171 | |||
172 | static inline __wsum csum_tcpudp_nofold(__be32 saddr, __be32 daddr, | ||
173 | unsigned short len, | ||
174 | unsigned short proto, | ||
175 | __wsum sum) | ||
176 | { | ||
177 | __asm__ __volatile__("addcc\t%1, %0, %0\n\t" | ||
178 | "addxcc\t%2, %0, %0\n\t" | ||
179 | "addxcc\t%3, %0, %0\n\t" | ||
180 | "addx\t%0, %%g0, %0\n\t" | ||
181 | : "=r" (sum), "=r" (saddr) | ||
182 | : "r" (daddr), "r" (proto + len), "0" (sum), | ||
183 | "1" (saddr) | ||
184 | : "cc"); | ||
185 | return sum; | ||
186 | } | ||
187 | |||
188 | /* | ||
189 | * computes the checksum of the TCP/UDP pseudo-header | ||
190 | * returns a 16-bit checksum, already complemented | ||
191 | */ | ||
192 | static inline __sum16 csum_tcpudp_magic(__be32 saddr, __be32 daddr, | ||
193 | unsigned short len, | ||
194 | unsigned short proto, | ||
195 | __wsum sum) | ||
196 | { | ||
197 | return csum_fold(csum_tcpudp_nofold(saddr,daddr,len,proto,sum)); | ||
198 | } | ||
199 | |||
200 | #define _HAVE_ARCH_IPV6_CSUM | ||
201 | |||
202 | static inline __sum16 csum_ipv6_magic(const struct in6_addr *saddr, | ||
203 | const struct in6_addr *daddr, | ||
204 | __u32 len, unsigned short proto, | ||
205 | __wsum sum) | ||
206 | { | ||
207 | __asm__ __volatile__ ( | ||
208 | "addcc %3, %4, %%g4\n\t" | ||
209 | "addxcc %5, %%g4, %%g4\n\t" | ||
210 | "ld [%2 + 0x0c], %%g2\n\t" | ||
211 | "ld [%2 + 0x08], %%g3\n\t" | ||
212 | "addxcc %%g2, %%g4, %%g4\n\t" | ||
213 | "ld [%2 + 0x04], %%g2\n\t" | ||
214 | "addxcc %%g3, %%g4, %%g4\n\t" | ||
215 | "ld [%2 + 0x00], %%g3\n\t" | ||
216 | "addxcc %%g2, %%g4, %%g4\n\t" | ||
217 | "ld [%1 + 0x0c], %%g2\n\t" | ||
218 | "addxcc %%g3, %%g4, %%g4\n\t" | ||
219 | "ld [%1 + 0x08], %%g3\n\t" | ||
220 | "addxcc %%g2, %%g4, %%g4\n\t" | ||
221 | "ld [%1 + 0x04], %%g2\n\t" | ||
222 | "addxcc %%g3, %%g4, %%g4\n\t" | ||
223 | "ld [%1 + 0x00], %%g3\n\t" | ||
224 | "addxcc %%g2, %%g4, %%g4\n\t" | ||
225 | "addxcc %%g3, %%g4, %0\n\t" | ||
226 | "addx 0, %0, %0\n" | ||
227 | : "=&r" (sum) | ||
228 | : "r" (saddr), "r" (daddr), | ||
229 | "r"(htonl(len)), "r"(htonl(proto)), "r"(sum) | ||
230 | : "g2", "g3", "g4", "cc"); | ||
231 | |||
232 | return csum_fold(sum); | ||
233 | } | ||
234 | |||
235 | /* this routine is used for miscellaneous IP-like checksums, mainly in icmp.c */ | ||
236 | static inline __sum16 ip_compute_csum(const void *buff, int len) | ||
237 | { | ||
238 | return csum_fold(csum_partial(buff, len, 0)); | ||
239 | } | ||
240 | |||
241 | #endif /* !(__SPARC_CHECKSUM_H) */ | ||