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xor_32.h
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1 /*
2  * include/asm/xor.h
3  *
4  * Optimized RAID-5 checksumming functions for 32-bit Sparc.
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2, or (at your option)
9  * any later version.
10  *
11  * You should have received a copy of the GNU General Public License
12  * (for example /usr/src/linux/COPYING); if not, write to the Free
13  * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
14  */
15 
16 /*
17  * High speed xor_block operation for RAID4/5 utilizing the
18  * ldd/std SPARC instructions.
19  *
20  * Copyright (C) 1999 Jakub Jelinek ([email protected])
21  */
22 
23 static void
24 sparc_2(unsigned long bytes, unsigned long *p1, unsigned long *p2)
25 {
26  int lines = bytes / (sizeof (long)) / 8;
27 
28  do {
29  __asm__ __volatile__(
30  "ldd [%0 + 0x00], %%g2\n\t"
31  "ldd [%0 + 0x08], %%g4\n\t"
32  "ldd [%0 + 0x10], %%o0\n\t"
33  "ldd [%0 + 0x18], %%o2\n\t"
34  "ldd [%1 + 0x00], %%o4\n\t"
35  "ldd [%1 + 0x08], %%l0\n\t"
36  "ldd [%1 + 0x10], %%l2\n\t"
37  "ldd [%1 + 0x18], %%l4\n\t"
38  "xor %%g2, %%o4, %%g2\n\t"
39  "xor %%g3, %%o5, %%g3\n\t"
40  "xor %%g4, %%l0, %%g4\n\t"
41  "xor %%g5, %%l1, %%g5\n\t"
42  "xor %%o0, %%l2, %%o0\n\t"
43  "xor %%o1, %%l3, %%o1\n\t"
44  "xor %%o2, %%l4, %%o2\n\t"
45  "xor %%o3, %%l5, %%o3\n\t"
46  "std %%g2, [%0 + 0x00]\n\t"
47  "std %%g4, [%0 + 0x08]\n\t"
48  "std %%o0, [%0 + 0x10]\n\t"
49  "std %%o2, [%0 + 0x18]\n"
50  :
51  : "r" (p1), "r" (p2)
52  : "g2", "g3", "g4", "g5",
53  "o0", "o1", "o2", "o3", "o4", "o5",
54  "l0", "l1", "l2", "l3", "l4", "l5");
55  p1 += 8;
56  p2 += 8;
57  } while (--lines > 0);
58 }
59 
60 static void
61 sparc_3(unsigned long bytes, unsigned long *p1, unsigned long *p2,
62  unsigned long *p3)
63 {
64  int lines = bytes / (sizeof (long)) / 8;
65 
66  do {
67  __asm__ __volatile__(
68  "ldd [%0 + 0x00], %%g2\n\t"
69  "ldd [%0 + 0x08], %%g4\n\t"
70  "ldd [%0 + 0x10], %%o0\n\t"
71  "ldd [%0 + 0x18], %%o2\n\t"
72  "ldd [%1 + 0x00], %%o4\n\t"
73  "ldd [%1 + 0x08], %%l0\n\t"
74  "ldd [%1 + 0x10], %%l2\n\t"
75  "ldd [%1 + 0x18], %%l4\n\t"
76  "xor %%g2, %%o4, %%g2\n\t"
77  "xor %%g3, %%o5, %%g3\n\t"
78  "ldd [%2 + 0x00], %%o4\n\t"
79  "xor %%g4, %%l0, %%g4\n\t"
80  "xor %%g5, %%l1, %%g5\n\t"
81  "ldd [%2 + 0x08], %%l0\n\t"
82  "xor %%o0, %%l2, %%o0\n\t"
83  "xor %%o1, %%l3, %%o1\n\t"
84  "ldd [%2 + 0x10], %%l2\n\t"
85  "xor %%o2, %%l4, %%o2\n\t"
86  "xor %%o3, %%l5, %%o3\n\t"
87  "ldd [%2 + 0x18], %%l4\n\t"
88  "xor %%g2, %%o4, %%g2\n\t"
89  "xor %%g3, %%o5, %%g3\n\t"
90  "xor %%g4, %%l0, %%g4\n\t"
91  "xor %%g5, %%l1, %%g5\n\t"
92  "xor %%o0, %%l2, %%o0\n\t"
93  "xor %%o1, %%l3, %%o1\n\t"
94  "xor %%o2, %%l4, %%o2\n\t"
95  "xor %%o3, %%l5, %%o3\n\t"
96  "std %%g2, [%0 + 0x00]\n\t"
97  "std %%g4, [%0 + 0x08]\n\t"
98  "std %%o0, [%0 + 0x10]\n\t"
99  "std %%o2, [%0 + 0x18]\n"
100  :
101  : "r" (p1), "r" (p2), "r" (p3)
102  : "g2", "g3", "g4", "g5",
103  "o0", "o1", "o2", "o3", "o4", "o5",
104  "l0", "l1", "l2", "l3", "l4", "l5");
105  p1 += 8;
106  p2 += 8;
107  p3 += 8;
108  } while (--lines > 0);
109 }
110 
111 static void
112 sparc_4(unsigned long bytes, unsigned long *p1, unsigned long *p2,
113  unsigned long *p3, unsigned long *p4)
114 {
115  int lines = bytes / (sizeof (long)) / 8;
116 
117  do {
118  __asm__ __volatile__(
119  "ldd [%0 + 0x00], %%g2\n\t"
120  "ldd [%0 + 0x08], %%g4\n\t"
121  "ldd [%0 + 0x10], %%o0\n\t"
122  "ldd [%0 + 0x18], %%o2\n\t"
123  "ldd [%1 + 0x00], %%o4\n\t"
124  "ldd [%1 + 0x08], %%l0\n\t"
125  "ldd [%1 + 0x10], %%l2\n\t"
126  "ldd [%1 + 0x18], %%l4\n\t"
127  "xor %%g2, %%o4, %%g2\n\t"
128  "xor %%g3, %%o5, %%g3\n\t"
129  "ldd [%2 + 0x00], %%o4\n\t"
130  "xor %%g4, %%l0, %%g4\n\t"
131  "xor %%g5, %%l1, %%g5\n\t"
132  "ldd [%2 + 0x08], %%l0\n\t"
133  "xor %%o0, %%l2, %%o0\n\t"
134  "xor %%o1, %%l3, %%o1\n\t"
135  "ldd [%2 + 0x10], %%l2\n\t"
136  "xor %%o2, %%l4, %%o2\n\t"
137  "xor %%o3, %%l5, %%o3\n\t"
138  "ldd [%2 + 0x18], %%l4\n\t"
139  "xor %%g2, %%o4, %%g2\n\t"
140  "xor %%g3, %%o5, %%g3\n\t"
141  "ldd [%3 + 0x00], %%o4\n\t"
142  "xor %%g4, %%l0, %%g4\n\t"
143  "xor %%g5, %%l1, %%g5\n\t"
144  "ldd [%3 + 0x08], %%l0\n\t"
145  "xor %%o0, %%l2, %%o0\n\t"
146  "xor %%o1, %%l3, %%o1\n\t"
147  "ldd [%3 + 0x10], %%l2\n\t"
148  "xor %%o2, %%l4, %%o2\n\t"
149  "xor %%o3, %%l5, %%o3\n\t"
150  "ldd [%3 + 0x18], %%l4\n\t"
151  "xor %%g2, %%o4, %%g2\n\t"
152  "xor %%g3, %%o5, %%g3\n\t"
153  "xor %%g4, %%l0, %%g4\n\t"
154  "xor %%g5, %%l1, %%g5\n\t"
155  "xor %%o0, %%l2, %%o0\n\t"
156  "xor %%o1, %%l3, %%o1\n\t"
157  "xor %%o2, %%l4, %%o2\n\t"
158  "xor %%o3, %%l5, %%o3\n\t"
159  "std %%g2, [%0 + 0x00]\n\t"
160  "std %%g4, [%0 + 0x08]\n\t"
161  "std %%o0, [%0 + 0x10]\n\t"
162  "std %%o2, [%0 + 0x18]\n"
163  :
164  : "r" (p1), "r" (p2), "r" (p3), "r" (p4)
165  : "g2", "g3", "g4", "g5",
166  "o0", "o1", "o2", "o3", "o4", "o5",
167  "l0", "l1", "l2", "l3", "l4", "l5");
168  p1 += 8;
169  p2 += 8;
170  p3 += 8;
171  p4 += 8;
172  } while (--lines > 0);
173 }
174 
175 static void
176 sparc_5(unsigned long bytes, unsigned long *p1, unsigned long *p2,
177  unsigned long *p3, unsigned long *p4, unsigned long *p5)
178 {
179  int lines = bytes / (sizeof (long)) / 8;
180 
181  do {
182  __asm__ __volatile__(
183  "ldd [%0 + 0x00], %%g2\n\t"
184  "ldd [%0 + 0x08], %%g4\n\t"
185  "ldd [%0 + 0x10], %%o0\n\t"
186  "ldd [%0 + 0x18], %%o2\n\t"
187  "ldd [%1 + 0x00], %%o4\n\t"
188  "ldd [%1 + 0x08], %%l0\n\t"
189  "ldd [%1 + 0x10], %%l2\n\t"
190  "ldd [%1 + 0x18], %%l4\n\t"
191  "xor %%g2, %%o4, %%g2\n\t"
192  "xor %%g3, %%o5, %%g3\n\t"
193  "ldd [%2 + 0x00], %%o4\n\t"
194  "xor %%g4, %%l0, %%g4\n\t"
195  "xor %%g5, %%l1, %%g5\n\t"
196  "ldd [%2 + 0x08], %%l0\n\t"
197  "xor %%o0, %%l2, %%o0\n\t"
198  "xor %%o1, %%l3, %%o1\n\t"
199  "ldd [%2 + 0x10], %%l2\n\t"
200  "xor %%o2, %%l4, %%o2\n\t"
201  "xor %%o3, %%l5, %%o3\n\t"
202  "ldd [%2 + 0x18], %%l4\n\t"
203  "xor %%g2, %%o4, %%g2\n\t"
204  "xor %%g3, %%o5, %%g3\n\t"
205  "ldd [%3 + 0x00], %%o4\n\t"
206  "xor %%g4, %%l0, %%g4\n\t"
207  "xor %%g5, %%l1, %%g5\n\t"
208  "ldd [%3 + 0x08], %%l0\n\t"
209  "xor %%o0, %%l2, %%o0\n\t"
210  "xor %%o1, %%l3, %%o1\n\t"
211  "ldd [%3 + 0x10], %%l2\n\t"
212  "xor %%o2, %%l4, %%o2\n\t"
213  "xor %%o3, %%l5, %%o3\n\t"
214  "ldd [%3 + 0x18], %%l4\n\t"
215  "xor %%g2, %%o4, %%g2\n\t"
216  "xor %%g3, %%o5, %%g3\n\t"
217  "ldd [%4 + 0x00], %%o4\n\t"
218  "xor %%g4, %%l0, %%g4\n\t"
219  "xor %%g5, %%l1, %%g5\n\t"
220  "ldd [%4 + 0x08], %%l0\n\t"
221  "xor %%o0, %%l2, %%o0\n\t"
222  "xor %%o1, %%l3, %%o1\n\t"
223  "ldd [%4 + 0x10], %%l2\n\t"
224  "xor %%o2, %%l4, %%o2\n\t"
225  "xor %%o3, %%l5, %%o3\n\t"
226  "ldd [%4 + 0x18], %%l4\n\t"
227  "xor %%g2, %%o4, %%g2\n\t"
228  "xor %%g3, %%o5, %%g3\n\t"
229  "xor %%g4, %%l0, %%g4\n\t"
230  "xor %%g5, %%l1, %%g5\n\t"
231  "xor %%o0, %%l2, %%o0\n\t"
232  "xor %%o1, %%l3, %%o1\n\t"
233  "xor %%o2, %%l4, %%o2\n\t"
234  "xor %%o3, %%l5, %%o3\n\t"
235  "std %%g2, [%0 + 0x00]\n\t"
236  "std %%g4, [%0 + 0x08]\n\t"
237  "std %%o0, [%0 + 0x10]\n\t"
238  "std %%o2, [%0 + 0x18]\n"
239  :
240  : "r" (p1), "r" (p2), "r" (p3), "r" (p4), "r" (p5)
241  : "g2", "g3", "g4", "g5",
242  "o0", "o1", "o2", "o3", "o4", "o5",
243  "l0", "l1", "l2", "l3", "l4", "l5");
244  p1 += 8;
245  p2 += 8;
246  p3 += 8;
247  p4 += 8;
248  p5 += 8;
249  } while (--lines > 0);
250 }
251 
252 static struct xor_block_template xor_block_SPARC = {
253  .name = "SPARC",
254  .do_2 = sparc_2,
255  .do_3 = sparc_3,
256  .do_4 = sparc_4,
257  .do_5 = sparc_5,
258 };
259 
260 /* For grins, also test the generic routines. */
261 #include <asm-generic/xor.h>
262 
263 #undef XOR_TRY_TEMPLATES
264 #define XOR_TRY_TEMPLATES \
265  do { \
266  xor_speed(&xor_block_8regs); \
267  xor_speed(&xor_block_32regs); \
268  xor_speed(&xor_block_SPARC); \
269  } while (0)
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