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[PATCH] w1: hotplug support.
[linux-2.6/verdex.git] / include / asm-ppc / ppc_asm.h
blobbb53e2def363df54400d8cedfbfdb2d56addf23c
1 /*
2 * include/asm-ppc/ppc_asm.h
3 *
4 * Definitions used by various bits of low-level assembly code on PowerPC.
5 *
6 * Copyright (C) 1995-1999 Gary Thomas, Paul Mackerras, Cort Dougan.
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * as published by the Free Software Foundation; either version
11 * 2 of the License, or (at your option) any later version.
12 */
13
14 #include <linux/config.h>
15
16 /*
17 * Macros for storing registers into and loading registers from
18 * exception frames.
19 */
20 #define SAVE_GPR(n, base) stw n,GPR0+4*(n)(base)
21 #define SAVE_2GPRS(n, base) SAVE_GPR(n, base); SAVE_GPR(n+1, base)
22 #define SAVE_4GPRS(n, base) SAVE_2GPRS(n, base); SAVE_2GPRS(n+2, base)
23 #define SAVE_8GPRS(n, base) SAVE_4GPRS(n, base); SAVE_4GPRS(n+4, base)
24 #define SAVE_10GPRS(n, base) SAVE_8GPRS(n, base); SAVE_2GPRS(n+8, base)
25 #define REST_GPR(n, base) lwz n,GPR0+4*(n)(base)
26 #define REST_2GPRS(n, base) REST_GPR(n, base); REST_GPR(n+1, base)
27 #define REST_4GPRS(n, base) REST_2GPRS(n, base); REST_2GPRS(n+2, base)
28 #define REST_8GPRS(n, base) REST_4GPRS(n, base); REST_4GPRS(n+4, base)
29 #define REST_10GPRS(n, base) REST_8GPRS(n, base); REST_2GPRS(n+8, base)
30
31 #define SAVE_NVGPRS(base) SAVE_GPR(13, base); SAVE_8GPRS(14, base); \
32 SAVE_10GPRS(22, base)
33 #define REST_NVGPRS(base) REST_GPR(13, base); REST_8GPRS(14, base); \
34 REST_10GPRS(22, base)
35
36 #define SAVE_FPR(n, base) stfd n,THREAD_FPR0+8*(n)(base)
37 #define SAVE_2FPRS(n, base) SAVE_FPR(n, base); SAVE_FPR(n+1, base)
38 #define SAVE_4FPRS(n, base) SAVE_2FPRS(n, base); SAVE_2FPRS(n+2, base)
39 #define SAVE_8FPRS(n, base) SAVE_4FPRS(n, base); SAVE_4FPRS(n+4, base)
40 #define SAVE_16FPRS(n, base) SAVE_8FPRS(n, base); SAVE_8FPRS(n+8, base)
41 #define SAVE_32FPRS(n, base) SAVE_16FPRS(n, base); SAVE_16FPRS(n+16, base)
42 #define REST_FPR(n, base) lfd n,THREAD_FPR0+8*(n)(base)
43 #define REST_2FPRS(n, base) REST_FPR(n, base); REST_FPR(n+1, base)
44 #define REST_4FPRS(n, base) REST_2FPRS(n, base); REST_2FPRS(n+2, base)
45 #define REST_8FPRS(n, base) REST_4FPRS(n, base); REST_4FPRS(n+4, base)
46 #define REST_16FPRS(n, base) REST_8FPRS(n, base); REST_8FPRS(n+8, base)
47 #define REST_32FPRS(n, base) REST_16FPRS(n, base); REST_16FPRS(n+16, base)
48
49 #define SAVE_VR(n,b,base) li b,THREAD_VR0+(16*(n)); stvx n,b,base
50 #define SAVE_2VR(n,b,base) SAVE_VR(n,b,base); SAVE_VR(n+1,b,base)
51 #define SAVE_4VR(n,b,base) SAVE_2VR(n,b,base); SAVE_2VR(n+2,b,base)
52 #define SAVE_8VR(n,b,base) SAVE_4VR(n,b,base); SAVE_4VR(n+4,b,base)
53 #define SAVE_16VR(n,b,base) SAVE_8VR(n,b,base); SAVE_8VR(n+8,b,base)
54 #define SAVE_32VR(n,b,base) SAVE_16VR(n,b,base); SAVE_16VR(n+16,b,base)
55 #define REST_VR(n,b,base) li b,THREAD_VR0+(16*(n)); lvx n,b,base
56 #define REST_2VR(n,b,base) REST_VR(n,b,base); REST_VR(n+1,b,base)
57 #define REST_4VR(n,b,base) REST_2VR(n,b,base); REST_2VR(n+2,b,base)
58 #define REST_8VR(n,b,base) REST_4VR(n,b,base); REST_4VR(n+4,b,base)
59 #define REST_16VR(n,b,base) REST_8VR(n,b,base); REST_8VR(n+8,b,base)
60 #define REST_32VR(n,b,base) REST_16VR(n,b,base); REST_16VR(n+16,b,base)
61
62 #define SAVE_EVR(n,s,base) evmergehi s,s,n; stw s,THREAD_EVR0+4*(n)(base)
63 #define SAVE_2EVR(n,s,base) SAVE_EVR(n,s,base); SAVE_EVR(n+1,s,base)
64 #define SAVE_4EVR(n,s,base) SAVE_2EVR(n,s,base); SAVE_2EVR(n+2,s,base)
65 #define SAVE_8EVR(n,s,base) SAVE_4EVR(n,s,base); SAVE_4EVR(n+4,s,base)
66 #define SAVE_16EVR(n,s,base) SAVE_8EVR(n,s,base); SAVE_8EVR(n+8,s,base)
67 #define SAVE_32EVR(n,s,base) SAVE_16EVR(n,s,base); SAVE_16EVR(n+16,s,base)
68
69 #define REST_EVR(n,s,base) lwz s,THREAD_EVR0+4*(n)(base); evmergelo n,s,n
70 #define REST_2EVR(n,s,base) REST_EVR(n,s,base); REST_EVR(n+1,s,base)
71 #define REST_4EVR(n,s,base) REST_2EVR(n,s,base); REST_2EVR(n+2,s,base)
72 #define REST_8EVR(n,s,base) REST_4EVR(n,s,base); REST_4EVR(n+4,s,base)
73 #define REST_16EVR(n,s,base) REST_8EVR(n,s,base); REST_8EVR(n+8,s,base)
74 #define REST_32EVR(n,s,base) REST_16EVR(n,s,base); REST_16EVR(n+16,s,base)
75
76 #ifdef CONFIG_PPC601_SYNC_FIX
77 #define SYNC \
78 BEGIN_FTR_SECTION \
79 sync; \
80 isync; \
81 END_FTR_SECTION_IFSET(CPU_FTR_601)
82 #define SYNC_601 \
83 BEGIN_FTR_SECTION \
84 sync; \
85 END_FTR_SECTION_IFSET(CPU_FTR_601)
86 #define ISYNC_601 \
87 BEGIN_FTR_SECTION \
88 isync; \
89 END_FTR_SECTION_IFSET(CPU_FTR_601)
90 #else
91 #define SYNC
92 #define SYNC_601
93 #define ISYNC_601
94 #endif
95
96 #ifndef CONFIG_SMP
97 #define TLBSYNC
98 #else /* CONFIG_SMP */
99 /* tlbsync is not implemented on 601 */
100 #define TLBSYNC \
101 BEGIN_FTR_SECTION \
102 tlbsync; \
103 sync; \
104 END_FTR_SECTION_IFCLR(CPU_FTR_601)
105 #endif
106
107 /*
108 * This instruction is not implemented on the PPC 603 or 601; however, on
109 * the 403GCX and 405GP tlbia IS defined and tlbie is not.
110 * All of these instructions exist in the 8xx, they have magical powers,
111 * and they must be used.
112 */
113
114 #if !defined(CONFIG_4xx) && !defined(CONFIG_8xx)
115 #define tlbia \
116 li r4,1024; \
117 mtctr r4; \
118 lis r4,KERNELBASE@h; \
119 0: tlbie r4; \
120 addi r4,r4,0x1000; \
121 bdnz 0b
122 #endif
123
124 #ifdef CONFIG_BOOKE
125 #define tophys(rd,rs) \
126 addis rd,rs,0
127
128 #define tovirt(rd,rs) \
129 addis rd,rs,0
130
131 #else /* CONFIG_BOOKE */
132 /*
133 * On APUS (Amiga PowerPC cpu upgrade board), we don't know the
134 * physical base address of RAM at compile time.
135 */
136 #define tophys(rd,rs) \
137 0: addis rd,rs,-KERNELBASE@h; \
138 .section ".vtop_fixup","aw"; \
139 .align 1; \
140 .long 0b; \
141 .previous
142
143 #define tovirt(rd,rs) \
144 0: addis rd,rs,KERNELBASE@h; \
145 .section ".ptov_fixup","aw"; \
146 .align 1; \
147 .long 0b; \
148 .previous
149 #endif /* CONFIG_BOOKE */
150
151 /*
152 * On 64-bit cpus, we use the rfid instruction instead of rfi, but
153 * we then have to make sure we preserve the top 32 bits except for
154 * the 64-bit mode bit, which we clear.
155 */
156 #ifdef CONFIG_PPC64BRIDGE
157 #define FIX_SRR1(ra, rb) \
158 mr rb,ra; \
159 mfmsr ra; \
160 clrldi ra,ra,1; /* turn off 64-bit mode */ \
161 rldimi ra,rb,0,32
162 #define RFI .long 0x4c000024 /* rfid instruction */
163 #define MTMSRD(r) .long (0x7c000164 + ((r) << 21)) /* mtmsrd */
164 #define CLR_TOP32(r) rlwinm (r),(r),0,0,31 /* clear top 32 bits */
165
166 #else
167 #define FIX_SRR1(ra, rb)
168 #ifndef CONFIG_40x
169 #define RFI rfi
170 #else
171 #define RFI rfi; b . /* Prevent prefetch past rfi */
172 #endif
173 #define MTMSRD(r) mtmsr r
174 #define CLR_TOP32(r)
175 #endif /* CONFIG_PPC64BRIDGE */
176
177 #define RFCI .long 0x4c000066 /* rfci instruction */
178 #define RFDI .long 0x4c00004e /* rfdi instruction */
179 #define RFMCI .long 0x4c00004c /* rfmci instruction */
180
181 #ifdef CONFIG_IBM405_ERR77
182 #define PPC405_ERR77(ra,rb) dcbt ra, rb;
183 #define PPC405_ERR77_SYNC sync;
184 #else
185 #define PPC405_ERR77(ra,rb)
186 #define PPC405_ERR77_SYNC
187 #endif
188
189 #ifdef CONFIG_IBM440EP_ERR42
190 #define PPC440EP_ERR42 isync
191 #else
192 #define PPC440EP_ERR42
193 #endif
194
195 /* The boring bits... */
196
197 /* Condition Register Bit Fields */
198
199 #define cr0 0
200 #define cr1 1
201 #define cr2 2
202 #define cr3 3
203 #define cr4 4
204 #define cr5 5
205 #define cr6 6
206 #define cr7 7
207
208
209 /* General Purpose Registers (GPRs) */
210
211 #define r0 0
212 #define r1 1
213 #define r2 2
214 #define r3 3
215 #define r4 4
216 #define r5 5
217 #define r6 6
218 #define r7 7
219 #define r8 8
220 #define r9 9
221 #define r10 10
222 #define r11 11
223 #define r12 12
224 #define r13 13
225 #define r14 14
226 #define r15 15
227 #define r16 16
228 #define r17 17
229 #define r18 18
230 #define r19 19
231 #define r20 20
232 #define r21 21
233 #define r22 22
234 #define r23 23
235 #define r24 24
236 #define r25 25
237 #define r26 26
238 #define r27 27
239 #define r28 28
240 #define r29 29
241 #define r30 30
242 #define r31 31
243
244
245 /* Floating Point Registers (FPRs) */
246
247 #define fr0 0
248 #define fr1 1
249 #define fr2 2
250 #define fr3 3
251 #define fr4 4
252 #define fr5 5
253 #define fr6 6
254 #define fr7 7
255 #define fr8 8
256 #define fr9 9
257 #define fr10 10
258 #define fr11 11
259 #define fr12 12
260 #define fr13 13
261 #define fr14 14
262 #define fr15 15
263 #define fr16 16
264 #define fr17 17
265 #define fr18 18
266 #define fr19 19
267 #define fr20 20
268 #define fr21 21
269 #define fr22 22
270 #define fr23 23
271 #define fr24 24
272 #define fr25 25
273 #define fr26 26
274 #define fr27 27
275 #define fr28 28
276 #define fr29 29
277 #define fr30 30
278 #define fr31 31
279
280 #define vr0 0
281 #define vr1 1
282 #define vr2 2
283 #define vr3 3
284 #define vr4 4
285 #define vr5 5
286 #define vr6 6
287 #define vr7 7
288 #define vr8 8
289 #define vr9 9
290 #define vr10 10
291 #define vr11 11
292 #define vr12 12
293 #define vr13 13
294 #define vr14 14
295 #define vr15 15
296 #define vr16 16
297 #define vr17 17
298 #define vr18 18
299 #define vr19 19
300 #define vr20 20
301 #define vr21 21
302 #define vr22 22
303 #define vr23 23
304 #define vr24 24
305 #define vr25 25
306 #define vr26 26
307 #define vr27 27
308 #define vr28 28
309 #define vr29 29
310 #define vr30 30
311 #define vr31 31
312
313 #define evr0 0
314 #define evr1 1
315 #define evr2 2
316 #define evr3 3
317 #define evr4 4
318 #define evr5 5
319 #define evr6 6
320 #define evr7 7
321 #define evr8 8
322 #define evr9 9
323 #define evr10 10
324 #define evr11 11
325 #define evr12 12
326 #define evr13 13
327 #define evr14 14
328 #define evr15 15
329 #define evr16 16
330 #define evr17 17
331 #define evr18 18
332 #define evr19 19
333 #define evr20 20
334 #define evr21 21
335 #define evr22 22
336 #define evr23 23
337 #define evr24 24
338 #define evr25 25
339 #define evr26 26
340 #define evr27 27
341 #define evr28 28
342 #define evr29 29
343 #define evr30 30
344 #define evr31 31
345
346 /* some stab codes */
347 #define N_FUN 36
348 #define N_RSYM 64
349 #define N_SLINE 68
350 #define N_SO 100
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