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License cleanup: add SPDX GPL-2.0 license identifier to files with no license
[linux-2.6/btrfs-unstable.git] / arch / mips / include / asm / mipsmtregs.h
blob212336b7c0f455b4396bc6b1caf75ae8d2ebec17
1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * MT regs definitions, follows on from mipsregs.h
4 * Copyright (C) 2004 - 2005 MIPS Technologies, Inc. All rights reserved.
5 * Elizabeth Clarke et. al.
6 *
7 */
8 #ifndef _ASM_MIPSMTREGS_H
9 #define _ASM_MIPSMTREGS_H
10
11 #include <asm/mipsregs.h>
12 #include <asm/war.h>
13
14 #ifndef __ASSEMBLY__
15
16 /*
17 * C macros
18 */
19
20 #define read_c0_mvpcontrol() __read_32bit_c0_register($0, 1)
21 #define write_c0_mvpcontrol(val) __write_32bit_c0_register($0, 1, val)
22
23 #define read_c0_mvpconf0() __read_32bit_c0_register($0, 2)
24 #define read_c0_mvpconf1() __read_32bit_c0_register($0, 3)
25
26 #define read_c0_vpecontrol() __read_32bit_c0_register($1, 1)
27 #define write_c0_vpecontrol(val) __write_32bit_c0_register($1, 1, val)
28
29 #define read_c0_vpeconf0() __read_32bit_c0_register($1, 2)
30 #define write_c0_vpeconf0(val) __write_32bit_c0_register($1, 2, val)
31
32 #define read_c0_vpeconf1() __read_32bit_c0_register($1, 3)
33 #define write_c0_vpeconf1(val) __write_32bit_c0_register($1, 3, val)
34
35 #define read_c0_tcstatus() __read_32bit_c0_register($2, 1)
36 #define write_c0_tcstatus(val) __write_32bit_c0_register($2, 1, val)
37
38 #define read_c0_tcbind() __read_32bit_c0_register($2, 2)
39
40 #define write_c0_tchalt(val) __write_32bit_c0_register($2, 4, val)
41
42 #define read_c0_tccontext() __read_32bit_c0_register($2, 5)
43 #define write_c0_tccontext(val) __write_32bit_c0_register($2, 5, val)
44
45 #else /* Assembly */
46 /*
47 * Macros for use in assembly language code
48 */
49
50 #define CP0_MVPCONTROL $0, 1
51 #define CP0_MVPCONF0 $0, 2
52 #define CP0_MVPCONF1 $0, 3
53 #define CP0_VPECONTROL $1, 1
54 #define CP0_VPECONF0 $1, 2
55 #define CP0_VPECONF1 $1, 3
56 #define CP0_YQMASK $1, 4
57 #define CP0_VPESCHEDULE $1, 5
58 #define CP0_VPESCHEFBK $1, 6
59 #define CP0_TCSTATUS $2, 1
60 #define CP0_TCBIND $2, 2
61 #define CP0_TCRESTART $2, 3
62 #define CP0_TCHALT $2, 4
63 #define CP0_TCCONTEXT $2, 5
64 #define CP0_TCSCHEDULE $2, 6
65 #define CP0_TCSCHEFBK $2, 7
66 #define CP0_SRSCONF0 $6, 1
67 #define CP0_SRSCONF1 $6, 2
68 #define CP0_SRSCONF2 $6, 3
69 #define CP0_SRSCONF3 $6, 4
70 #define CP0_SRSCONF4 $6, 5
71
72 #endif
73
74 /* MVPControl fields */
75 #define MVPCONTROL_EVP (_ULCAST_(1))
76
77 #define MVPCONTROL_VPC_SHIFT 1
78 #define MVPCONTROL_VPC (_ULCAST_(1) << MVPCONTROL_VPC_SHIFT)
79
80 #define MVPCONTROL_STLB_SHIFT 2
81 #define MVPCONTROL_STLB (_ULCAST_(1) << MVPCONTROL_STLB_SHIFT)
82
83
84 /* MVPConf0 fields */
85 #define MVPCONF0_PTC_SHIFT 0
86 #define MVPCONF0_PTC ( _ULCAST_(0xff))
87 #define MVPCONF0_PVPE_SHIFT 10
88 #define MVPCONF0_PVPE ( _ULCAST_(0xf) << MVPCONF0_PVPE_SHIFT)
89 #define MVPCONF0_TCA_SHIFT 15
90 #define MVPCONF0_TCA ( _ULCAST_(1) << MVPCONF0_TCA_SHIFT)
91 #define MVPCONF0_PTLBE_SHIFT 16
92 #define MVPCONF0_PTLBE (_ULCAST_(0x3ff) << MVPCONF0_PTLBE_SHIFT)
93 #define MVPCONF0_TLBS_SHIFT 29
94 #define MVPCONF0_TLBS (_ULCAST_(1) << MVPCONF0_TLBS_SHIFT)
95 #define MVPCONF0_M_SHIFT 31
96 #define MVPCONF0_M (_ULCAST_(0x1) << MVPCONF0_M_SHIFT)
97
98
99 /* config3 fields */
100 #define CONFIG3_MT_SHIFT 2
101 #define CONFIG3_MT (_ULCAST_(1) << CONFIG3_MT_SHIFT)
102
103
104 /* VPEControl fields (per VPE) */
105 #define VPECONTROL_TARGTC (_ULCAST_(0xff))
106
107 #define VPECONTROL_TE_SHIFT 15
108 #define VPECONTROL_TE (_ULCAST_(1) << VPECONTROL_TE_SHIFT)
109 #define VPECONTROL_EXCPT_SHIFT 16
110 #define VPECONTROL_EXCPT (_ULCAST_(0x7) << VPECONTROL_EXCPT_SHIFT)
111
112 /* Thread Exception Codes for EXCPT field */
113 #define THREX_TU 0
114 #define THREX_TO 1
115 #define THREX_IYQ 2
116 #define THREX_GSX 3
117 #define THREX_YSCH 4
118 #define THREX_GSSCH 5
119
120 #define VPECONTROL_GSI_SHIFT 20
121 #define VPECONTROL_GSI (_ULCAST_(1) << VPECONTROL_GSI_SHIFT)
122 #define VPECONTROL_YSI_SHIFT 21
123 #define VPECONTROL_YSI (_ULCAST_(1) << VPECONTROL_YSI_SHIFT)
124
125 /* VPEConf0 fields (per VPE) */
126 #define VPECONF0_VPA_SHIFT 0
127 #define VPECONF0_VPA (_ULCAST_(1) << VPECONF0_VPA_SHIFT)
128 #define VPECONF0_MVP_SHIFT 1
129 #define VPECONF0_MVP (_ULCAST_(1) << VPECONF0_MVP_SHIFT)
130 #define VPECONF0_XTC_SHIFT 21
131 #define VPECONF0_XTC (_ULCAST_(0xff) << VPECONF0_XTC_SHIFT)
132
133 /* VPEConf1 fields (per VPE) */
134 #define VPECONF1_NCP1_SHIFT 0
135 #define VPECONF1_NCP1 (_ULCAST_(0xff) << VPECONF1_NCP1_SHIFT)
136 #define VPECONF1_NCP2_SHIFT 10
137 #define VPECONF1_NCP2 (_ULCAST_(0xff) << VPECONF1_NCP2_SHIFT)
138 #define VPECONF1_NCX_SHIFT 20
139 #define VPECONF1_NCX (_ULCAST_(0xff) << VPECONF1_NCX_SHIFT)
140
141 /* TCStatus fields (per TC) */
142 #define TCSTATUS_TASID (_ULCAST_(0xff))
143 #define TCSTATUS_IXMT_SHIFT 10
144 #define TCSTATUS_IXMT (_ULCAST_(1) << TCSTATUS_IXMT_SHIFT)
145 #define TCSTATUS_TKSU_SHIFT 11
146 #define TCSTATUS_TKSU (_ULCAST_(3) << TCSTATUS_TKSU_SHIFT)
147 #define TCSTATUS_A_SHIFT 13
148 #define TCSTATUS_A (_ULCAST_(1) << TCSTATUS_A_SHIFT)
149 #define TCSTATUS_DA_SHIFT 15
150 #define TCSTATUS_DA (_ULCAST_(1) << TCSTATUS_DA_SHIFT)
151 #define TCSTATUS_DT_SHIFT 20
152 #define TCSTATUS_DT (_ULCAST_(1) << TCSTATUS_DT_SHIFT)
153 #define TCSTATUS_TDS_SHIFT 21
154 #define TCSTATUS_TDS (_ULCAST_(1) << TCSTATUS_TDS_SHIFT)
155 #define TCSTATUS_TSST_SHIFT 22
156 #define TCSTATUS_TSST (_ULCAST_(1) << TCSTATUS_TSST_SHIFT)
157 #define TCSTATUS_RNST_SHIFT 23
158 #define TCSTATUS_RNST (_ULCAST_(3) << TCSTATUS_RNST_SHIFT)
159 /* Codes for RNST */
160 #define TC_RUNNING 0
161 #define TC_WAITING 1
162 #define TC_YIELDING 2
163 #define TC_GATED 3
164
165 #define TCSTATUS_TMX_SHIFT 27
166 #define TCSTATUS_TMX (_ULCAST_(1) << TCSTATUS_TMX_SHIFT)
167 /* TCStatus TCU bits can use same definitions/offsets as CU bits in Status */
168
169 /* TCBind */
170 #define TCBIND_CURVPE_SHIFT 0
171 #define TCBIND_CURVPE (_ULCAST_(0xf))
172
173 #define TCBIND_CURTC_SHIFT 21
174
175 #define TCBIND_CURTC (_ULCAST_(0xff) << TCBIND_CURTC_SHIFT)
176
177 /* TCHalt */
178 #define TCHALT_H (_ULCAST_(1))
179
180 #ifndef __ASSEMBLY__
181
182 static inline unsigned core_nvpes(void)
183 {
184 unsigned conf0;
185
186 if (!cpu_has_mipsmt)
187 return 1;
188
189 conf0 = read_c0_mvpconf0();
190 return ((conf0 & MVPCONF0_PVPE) >> MVPCONF0_PVPE_SHIFT) + 1;
191 }
192
193 static inline unsigned int dvpe(void)
194 {
195 int res = 0;
196
197 __asm__ __volatile__(
198 " .set push \n"
199 " .set noreorder \n"
200 " .set noat \n"
201 " .set mips32r2 \n"
202 " .word 0x41610001 # dvpe $1 \n"
203 " move %0, $1 \n"
204 " ehb \n"
205 " .set pop \n"
206 : "=r" (res));
207
208 instruction_hazard();
209
210 return res;
211 }
212
213 static inline void __raw_evpe(void)
214 {
215 __asm__ __volatile__(
216 " .set push \n"
217 " .set noreorder \n"
218 " .set noat \n"
219 " .set mips32r2 \n"
220 " .word 0x41600021 # evpe \n"
221 " ehb \n"
222 " .set pop \n");
223 }
224
225 /* Enable virtual processor execution if previous suggested it should be.
226 EVPE_ENABLE to force */
227
228 #define EVPE_ENABLE MVPCONTROL_EVP
229
230 static inline void evpe(int previous)
231 {
232 if ((previous & MVPCONTROL_EVP))
233 __raw_evpe();
234 }
235
236 static inline unsigned int dmt(void)
237 {
238 int res;
239
240 __asm__ __volatile__(
241 " .set push \n"
242 " .set mips32r2 \n"
243 " .set noat \n"
244 " .word 0x41610BC1 # dmt $1 \n"
245 " ehb \n"
246 " move %0, $1 \n"
247 " .set pop \n"
248 : "=r" (res));
249
250 instruction_hazard();
251
252 return res;
253 }
254
255 static inline void __raw_emt(void)
256 {
257 __asm__ __volatile__(
258 " .set noreorder \n"
259 " .set mips32r2 \n"
260 " .word 0x41600be1 # emt \n"
261 " ehb \n"
262 " .set mips0 \n"
263 " .set reorder");
264 }
265
266 /* enable multi-threaded execution if previous suggested it should be.
267 EMT_ENABLE to force */
268
269 #define EMT_ENABLE VPECONTROL_TE
270
271 static inline void emt(int previous)
272 {
273 if ((previous & EMT_ENABLE))
274 __raw_emt();
275 }
276
277 static inline void ehb(void)
278 {
279 __asm__ __volatile__(
280 " .set mips32r2 \n"
281 " ehb \n"
282 " .set mips0 \n");
283 }
284
285 #define mftc0(rt,sel) \
286 ({ \
287 unsigned long __res; \
288 \
289 __asm__ __volatile__( \
290 " .set push \n" \
291 " .set mips32r2 \n" \
292 " .set noat \n" \
293 " # mftc0 $1, $" #rt ", " #sel " \n" \
294 " .word 0x41000800 | (" #rt " << 16) | " #sel " \n" \
295 " move %0, $1 \n" \
296 " .set pop \n" \
297 : "=r" (__res)); \
298 \
299 __res; \
300 })
301
302 #define mftgpr(rt) \
303 ({ \
304 unsigned long __res; \
305 \
306 __asm__ __volatile__( \
307 " .set push \n" \
308 " .set noat \n" \
309 " .set mips32r2 \n" \
310 " # mftgpr $1," #rt " \n" \
311 " .word 0x41000820 | (" #rt " << 16) \n" \
312 " move %0, $1 \n" \
313 " .set pop \n" \
314 : "=r" (__res)); \
315 \
316 __res; \
317 })
318
319 #define mftr(rt, u, sel) \
320 ({ \
321 unsigned long __res; \
322 \
323 __asm__ __volatile__( \
324 " mftr %0, " #rt ", " #u ", " #sel " \n" \
325 : "=r" (__res)); \
326 \
327 __res; \
328 })
329
330 #define mttgpr(rd,v) \
331 do { \
332 __asm__ __volatile__( \
333 " .set push \n" \
334 " .set mips32r2 \n" \
335 " .set noat \n" \
336 " move $1, %0 \n" \
337 " # mttgpr $1, " #rd " \n" \
338 " .word 0x41810020 | (" #rd " << 11) \n" \
339 " .set pop \n" \
340 : : "r" (v)); \
341 } while (0)
342
343 #define mttc0(rd, sel, v) \
344 ({ \
345 __asm__ __volatile__( \
346 " .set push \n" \
347 " .set mips32r2 \n" \
348 " .set noat \n" \
349 " move $1, %0 \n" \
350 " # mttc0 %0," #rd ", " #sel " \n" \
351 " .word 0x41810000 | (" #rd " << 11) | " #sel " \n" \
352 " .set pop \n" \
353 : \
354 : "r" (v)); \
355 })
356
357
358 #define mttr(rd, u, sel, v) \
359 ({ \
360 __asm__ __volatile__( \
361 "mttr %0," #rd ", " #u ", " #sel \
362 : : "r" (v)); \
363 })
364
365
366 #define settc(tc) \
367 do { \
368 write_c0_vpecontrol((read_c0_vpecontrol()&~VPECONTROL_TARGTC) | (tc)); \
369 ehb(); \
370 } while (0)
371
372
373 /* you *must* set the target tc (settc) before trying to use these */
374 #define read_vpe_c0_vpecontrol() mftc0(1, 1)
375 #define write_vpe_c0_vpecontrol(val) mttc0(1, 1, val)
376 #define read_vpe_c0_vpeconf0() mftc0(1, 2)
377 #define write_vpe_c0_vpeconf0(val) mttc0(1, 2, val)
378 #define read_vpe_c0_vpeconf1() mftc0(1, 3)
379 #define write_vpe_c0_vpeconf1(val) mttc0(1, 3, val)
380 #define read_vpe_c0_count() mftc0(9, 0)
381 #define write_vpe_c0_count(val) mttc0(9, 0, val)
382 #define read_vpe_c0_status() mftc0(12, 0)
383 #define write_vpe_c0_status(val) mttc0(12, 0, val)
384 #define read_vpe_c0_cause() mftc0(13, 0)
385 #define write_vpe_c0_cause(val) mttc0(13, 0, val)
386 #define read_vpe_c0_config() mftc0(16, 0)
387 #define write_vpe_c0_config(val) mttc0(16, 0, val)
388 #define read_vpe_c0_config1() mftc0(16, 1)
389 #define write_vpe_c0_config1(val) mttc0(16, 1, val)
390 #define read_vpe_c0_config7() mftc0(16, 7)
391 #define write_vpe_c0_config7(val) mttc0(16, 7, val)
392 #define read_vpe_c0_ebase() mftc0(15, 1)
393 #define write_vpe_c0_ebase(val) mttc0(15, 1, val)
394 #define write_vpe_c0_compare(val) mttc0(11, 0, val)
395 #define read_vpe_c0_badvaddr() mftc0(8, 0)
396 #define read_vpe_c0_epc() mftc0(14, 0)
397 #define write_vpe_c0_epc(val) mttc0(14, 0, val)
398
399
400 /* TC */
401 #define read_tc_c0_tcstatus() mftc0(2, 1)
402 #define write_tc_c0_tcstatus(val) mttc0(2, 1, val)
403 #define read_tc_c0_tcbind() mftc0(2, 2)
404 #define write_tc_c0_tcbind(val) mttc0(2, 2, val)
405 #define read_tc_c0_tcrestart() mftc0(2, 3)
406 #define write_tc_c0_tcrestart(val) mttc0(2, 3, val)
407 #define read_tc_c0_tchalt() mftc0(2, 4)
408 #define write_tc_c0_tchalt(val) mttc0(2, 4, val)
409 #define read_tc_c0_tccontext() mftc0(2, 5)
410 #define write_tc_c0_tccontext(val) mttc0(2, 5, val)
411
412 /* GPR */
413 #define read_tc_gpr_sp() mftgpr(29)
414 #define write_tc_gpr_sp(val) mttgpr(29, val)
415 #define read_tc_gpr_gp() mftgpr(28)
416 #define write_tc_gpr_gp(val) mttgpr(28, val)
417
418 __BUILD_SET_C0(mvpcontrol)
419
420 #endif /* Not __ASSEMBLY__ */
421
422 #endif
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