1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3 * include/asm/xor.h
4 *
5 * Optimized RAID-5 checksumming functions for 32-bit Sparc.
6 */
7
8 /*
9 * High speed xor_block operation for RAID4/5 utilizing the
10 * ldd/std SPARC instructions.
11 *
12 * Copyright (C) 1999 Jakub Jelinek (jj@ultra.linux.cz)
13 */
14
15 static void
16 sparc_2(unsigned long bytes, unsigned long * __restrict p1,
17 const unsigned long * __restrict p2)
18 {
19 int lines = bytes / (sizeof (long)) / 8;
20
21 do {
22 __asm__ __volatile__(
23 "ldd [%0 + 0x00], %%g2\n\t"
24 "ldd [%0 + 0x08], %%g4\n\t"
25 "ldd [%0 + 0x10], %%o0\n\t"
26 "ldd [%0 + 0x18], %%o2\n\t"
27 "ldd [%1 + 0x00], %%o4\n\t"
28 "ldd [%1 + 0x08], %%l0\n\t"
29 "ldd [%1 + 0x10], %%l2\n\t"
30 "ldd [%1 + 0x18], %%l4\n\t"
31 "xor %%g2, %%o4, %%g2\n\t"
32 "xor %%g3, %%o5, %%g3\n\t"
33 "xor %%g4, %%l0, %%g4\n\t"
34 "xor %%g5, %%l1, %%g5\n\t"
35 "xor %%o0, %%l2, %%o0\n\t"
36 "xor %%o1, %%l3, %%o1\n\t"
37 "xor %%o2, %%l4, %%o2\n\t"
38 "xor %%o3, %%l5, %%o3\n\t"
39 "std %%g2, [%0 + 0x00]\n\t"
40 "std %%g4, [%0 + 0x08]\n\t"
41 "std %%o0, [%0 + 0x10]\n\t"
42 "std %%o2, [%0 + 0x18]\n"
43 :
44 : "r" (p1), "r" (p2)
45 : "g2", "g3", "g4", "g5",
46 "o0", "o1", "o2", "o3", "o4", "o5",
47 "l0", "l1", "l2", "l3", "l4", "l5");
48 p1 += 8;
49 p2 += 8;
50 } while (--lines > 0);
51 }
52
53 static void
54 sparc_3(unsigned long bytes, unsigned long * __restrict p1,
55 const unsigned long * __restrict p2,
56 const unsigned long * __restrict p3)
57 {
58 int lines = bytes / (sizeof (long)) / 8;
59
60 do {
61 __asm__ __volatile__(
62 "ldd [%0 + 0x00], %%g2\n\t"
63 "ldd [%0 + 0x08], %%g4\n\t"
64 "ldd [%0 + 0x10], %%o0\n\t"
65 "ldd [%0 + 0x18], %%o2\n\t"
66 "ldd [%1 + 0x00], %%o4\n\t"
67 "ldd [%1 + 0x08], %%l0\n\t"
68 "ldd [%1 + 0x10], %%l2\n\t"
69 "ldd [%1 + 0x18], %%l4\n\t"
70 "xor %%g2, %%o4, %%g2\n\t"
71 "xor %%g3, %%o5, %%g3\n\t"
72 "ldd [%2 + 0x00], %%o4\n\t"
73 "xor %%g4, %%l0, %%g4\n\t"
74 "xor %%g5, %%l1, %%g5\n\t"
75 "ldd [%2 + 0x08], %%l0\n\t"
76 "xor %%o0, %%l2, %%o0\n\t"
77 "xor %%o1, %%l3, %%o1\n\t"
78 "ldd [%2 + 0x10], %%l2\n\t"
79 "xor %%o2, %%l4, %%o2\n\t"
80 "xor %%o3, %%l5, %%o3\n\t"
81 "ldd [%2 + 0x18], %%l4\n\t"
82 "xor %%g2, %%o4, %%g2\n\t"
83 "xor %%g3, %%o5, %%g3\n\t"
84 "xor %%g4, %%l0, %%g4\n\t"
85 "xor %%g5, %%l1, %%g5\n\t"
86 "xor %%o0, %%l2, %%o0\n\t"
87 "xor %%o1, %%l3, %%o1\n\t"
88 "xor %%o2, %%l4, %%o2\n\t"
89 "xor %%o3, %%l5, %%o3\n\t"
90 "std %%g2, [%0 + 0x00]\n\t"
91 "std %%g4, [%0 + 0x08]\n\t"
92 "std %%o0, [%0 + 0x10]\n\t"
93 "std %%o2, [%0 + 0x18]\n"
94 :
95 : "r" (p1), "r" (p2), "r" (p3)
96 : "g2", "g3", "g4", "g5",
97 "o0", "o1", "o2", "o3", "o4", "o5",
98 "l0", "l1", "l2", "l3", "l4", "l5");
99 p1 += 8;
100 p2 += 8;
101 p3 += 8;
102 } while (--lines > 0);
103 }
104
105 static void
106 sparc_4(unsigned long bytes, unsigned long * __restrict p1,
107 const unsigned long * __restrict p2,
108 const unsigned long * __restrict p3,
109 const unsigned long * __restrict p4)
110 {
111 int lines = bytes / (sizeof (long)) / 8;
112
113 do {
114 __asm__ __volatile__(
115 "ldd [%0 + 0x00], %%g2\n\t"
116 "ldd [%0 + 0x08], %%g4\n\t"
117 "ldd [%0 + 0x10], %%o0\n\t"
118 "ldd [%0 + 0x18], %%o2\n\t"
119 "ldd [%1 + 0x00], %%o4\n\t"
120 "ldd [%1 + 0x08], %%l0\n\t"
121 "ldd [%1 + 0x10], %%l2\n\t"
122 "ldd [%1 + 0x18], %%l4\n\t"
123 "xor %%g2, %%o4, %%g2\n\t"
124 "xor %%g3, %%o5, %%g3\n\t"
125 "ldd [%2 + 0x00], %%o4\n\t"
126 "xor %%g4, %%l0, %%g4\n\t"
127 "xor %%g5, %%l1, %%g5\n\t"
128 "ldd [%2 + 0x08], %%l0\n\t"
129 "xor %%o0, %%l2, %%o0\n\t"
130 "xor %%o1, %%l3, %%o1\n\t"
131 "ldd [%2 + 0x10], %%l2\n\t"
132 "xor %%o2, %%l4, %%o2\n\t"
133 "xor %%o3, %%l5, %%o3\n\t"
134 "ldd [%2 + 0x18], %%l4\n\t"
135 "xor %%g2, %%o4, %%g2\n\t"
136 "xor %%g3, %%o5, %%g3\n\t"
137 "ldd [%3 + 0x00], %%o4\n\t"
138 "xor %%g4, %%l0, %%g4\n\t"
139 "xor %%g5, %%l1, %%g5\n\t"
140 "ldd [%3 + 0x08], %%l0\n\t"
141 "xor %%o0, %%l2, %%o0\n\t"
142 "xor %%o1, %%l3, %%o1\n\t"
143 "ldd [%3 + 0x10], %%l2\n\t"
144 "xor %%o2, %%l4, %%o2\n\t"
145 "xor %%o3, %%l5, %%o3\n\t"
146 "ldd [%3 + 0x18], %%l4\n\t"
147 "xor %%g2, %%o4, %%g2\n\t"
148 "xor %%g3, %%o5, %%g3\n\t"
149 "xor %%g4, %%l0, %%g4\n\t"
150 "xor %%g5, %%l1, %%g5\n\t"
151 "xor %%o0, %%l2, %%o0\n\t"
152 "xor %%o1, %%l3, %%o1\n\t"
153 "xor %%o2, %%l4, %%o2\n\t"
154 "xor %%o3, %%l5, %%o3\n\t"
155 "std %%g2, [%0 + 0x00]\n\t"
156 "std %%g4, [%0 + 0x08]\n\t"
157 "std %%o0, [%0 + 0x10]\n\t"
158 "std %%o2, [%0 + 0x18]\n"
159 :
160 : "r" (p1), "r" (p2), "r" (p3), "r" (p4)
161 : "g2", "g3", "g4", "g5",
162 "o0", "o1", "o2", "o3", "o4", "o5",
163 "l0", "l1", "l2", "l3", "l4", "l5");
164 p1 += 8;
165 p2 += 8;
166 p3 += 8;
167 p4 += 8;
168 } while (--lines > 0);
169 }
170
171 static void
172 sparc_5(unsigned long bytes, unsigned long * __restrict p1,
173 const unsigned long * __restrict p2,
174 const unsigned long * __restrict p3,
175 const unsigned long * __restrict p4,
176 const unsigned long * __restrict p5)
177 {
178 int lines = bytes / (sizeof (long)) / 8;
179
180 do {
181 __asm__ __volatile__(
182 "ldd [%0 + 0x00], %%g2\n\t"
183 "ldd [%0 + 0x08], %%g4\n\t"
184 "ldd [%0 + 0x10], %%o0\n\t"
185 "ldd [%0 + 0x18], %%o2\n\t"
186 "ldd [%1 + 0x00], %%o4\n\t"
187 "ldd [%1 + 0x08], %%l0\n\t"
188 "ldd [%1 + 0x10], %%l2\n\t"
189 "ldd [%1 + 0x18], %%l4\n\t"
190 "xor %%g2, %%o4, %%g2\n\t"
191 "xor %%g3, %%o5, %%g3\n\t"
192 "ldd [%2 + 0x00], %%o4\n\t"
193 "xor %%g4, %%l0, %%g4\n\t"
194 "xor %%g5, %%l1, %%g5\n\t"
195 "ldd [%2 + 0x08], %%l0\n\t"
196 "xor %%o0, %%l2, %%o0\n\t"
197 "xor %%o1, %%l3, %%o1\n\t"
198 "ldd [%2 + 0x10], %%l2\n\t"
199 "xor %%o2, %%l4, %%o2\n\t"
200 "xor %%o3, %%l5, %%o3\n\t"
201 "ldd [%2 + 0x18], %%l4\n\t"
202 "xor %%g2, %%o4, %%g2\n\t"
203 "xor %%g3, %%o5, %%g3\n\t"
204 "ldd [%3 + 0x00], %%o4\n\t"
205 "xor %%g4, %%l0, %%g4\n\t"
206 "xor %%g5, %%l1, %%g5\n\t"
207 "ldd [%3 + 0x08], %%l0\n\t"
208 "xor %%o0, %%l2, %%o0\n\t"
209 "xor %%o1, %%l3, %%o1\n\t"
210 "ldd [%3 + 0x10], %%l2\n\t"
211 "xor %%o2, %%l4, %%o2\n\t"
212 "xor %%o3, %%l5, %%o3\n\t"
213 "ldd [%3 + 0x18], %%l4\n\t"
214 "xor %%g2, %%o4, %%g2\n\t"
215 "xor %%g3, %%o5, %%g3\n\t"
216 "ldd [%4 + 0x00], %%o4\n\t"
217 "xor %%g4, %%l0, %%g4\n\t"
218 "xor %%g5, %%l1, %%g5\n\t"
219 "ldd [%4 + 0x08], %%l0\n\t"
220 "xor %%o0, %%l2, %%o0\n\t"
221 "xor %%o1, %%l3, %%o1\n\t"
222 "ldd [%4 + 0x10], %%l2\n\t"
223 "xor %%o2, %%l4, %%o2\n\t"
224 "xor %%o3, %%l5, %%o3\n\t"
225 "ldd [%4 + 0x18], %%l4\n\t"
226 "xor %%g2, %%o4, %%g2\n\t"
227 "xor %%g3, %%o5, %%g3\n\t"
228 "xor %%g4, %%l0, %%g4\n\t"
229 "xor %%g5, %%l1, %%g5\n\t"
230 "xor %%o0, %%l2, %%o0\n\t"
231 "xor %%o1, %%l3, %%o1\n\t"
232 "xor %%o2, %%l4, %%o2\n\t"
233 "xor %%o3, %%l5, %%o3\n\t"
234 "std %%g2, [%0 + 0x00]\n\t"
235 "std %%g4, [%0 + 0x08]\n\t"
236 "std %%o0, [%0 + 0x10]\n\t"
237 "std %%o2, [%0 + 0x18]\n"
238 :
239 : "r" (p1), "r" (p2), "r" (p3), "r" (p4), "r" (p5)
240 : "g2", "g3", "g4", "g5",
241 "o0", "o1", "o2", "o3", "o4", "o5",
242 "l0", "l1", "l2", "l3", "l4", "l5");
243 p1 += 8;
244 p2 += 8;
245 p3 += 8;
246 p4 += 8;
247 p5 += 8;
248 } while (--lines > 0);
249 }
250
251 static struct xor_block_template xor_block_SPARC = {
252 .name = "SPARC",
253 .do_2 = sparc_2,
254 .do_3 = sparc_3,
255 .do_4 = sparc_4,
256 .do_5 = sparc_5,
257 };
258
259 /* For grins, also test the generic routines. */
260 #include <asm-generic/xor.h>
261
262 #undef XOR_TRY_TEMPLATES
263 #define XOR_TRY_TEMPLATES \
264 do { \
265 xor_speed(&xor_block_8regs); \
266 xor_speed(&xor_block_32regs); \
267 xor_speed(&xor_block_SPARC); \
268 } while (0)
269
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