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1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 1994, 1995, 1996, 1997, 2000, 2001 by Ralf Baechle
7 * Copyright (C) 2000 Silicon Graphics, Inc.
8 * Modified for further R[236]000 support by Paul M. Antoine, 1996.
9 * Kevin D. Kissell, kevink@mips.com and Carsten Langgaard, carstenl@mips.com
10 * Copyright (C) 2000, 07 MIPS Technologies, Inc.
11 * Copyright (C) 2003, 2004 Maciej W. Rozycki
12 */
13#ifndef _ASM_MIPSREGS_H
14#define _ASM_MIPSREGS_H
15
16#include <linux/linkage.h>
17#include <asm/hazards.h>
18#include <asm/war.h>
19
20/*
21 * The following macros are especially useful for __asm__
22 * inline assembler.
23 */
24#ifndef __STR
25#define __STR(x) #x
26#endif
27#ifndef STR
28#define STR(x) __STR(x)
29#endif
30
31/*
32 * Configure language
33 */
34#ifdef __ASSEMBLY__
35#define _ULCAST_
36#else
37#define _ULCAST_ (unsigned long)
38#endif
39
40/*
41 * Coprocessor 0 register names
42 */
43#define CP0_INDEX $0
44#define CP0_RANDOM $1
45#define CP0_ENTRYLO0 $2
46#define CP0_ENTRYLO1 $3
47#define CP0_CONF $3
48#define CP0_CONTEXT $4
49#define CP0_PAGEMASK $5
50#define CP0_WIRED $6
51#define CP0_INFO $7
52#define CP0_BADVADDR $8
53#define CP0_COUNT $9
54#define CP0_ENTRYHI $10
55#define CP0_COMPARE $11
56#define CP0_STATUS $12
57#define CP0_CAUSE $13
58#define CP0_EPC $14
59#define CP0_PRID $15
60#define CP0_CONFIG $16
61#define CP0_LLADDR $17
62#define CP0_WATCHLO $18
63#define CP0_WATCHHI $19
64#define CP0_XCONTEXT $20
65#define CP0_FRAMEMASK $21
66#define CP0_DIAGNOSTIC $22
67#define CP0_DEBUG $23
68#define CP0_DEPC $24
69#define CP0_PERFORMANCE $25
70#define CP0_ECC $26
71#define CP0_CACHEERR $27
72#define CP0_TAGLO $28
73#define CP0_TAGHI $29
74#define CP0_ERROREPC $30
75#define CP0_DESAVE $31
76
77/*
78 * R4640/R4650 cp0 register names. These registers are listed
79 * here only for completeness; without MMU these CPUs are not useable
80 * by Linux. A future ELKS port might take make Linux run on them
81 * though ...
82 */
83#define CP0_IBASE $0
84#define CP0_IBOUND $1
85#define CP0_DBASE $2
86#define CP0_DBOUND $3
87#define CP0_CALG $17
88#define CP0_IWATCH $18
89#define CP0_DWATCH $19
90
91/*
92 * Coprocessor 0 Set 1 register names
93 */
94#define CP0_S1_DERRADDR0 $26
95#define CP0_S1_DERRADDR1 $27
96#define CP0_S1_INTCONTROL $20
97
98/*
99 * Coprocessor 0 Set 2 register names
100 */
101#define CP0_S2_SRSCTL $12 /* MIPSR2 */
102
103/*
104 * Coprocessor 0 Set 3 register names
105 */
106#define CP0_S3_SRSMAP $12 /* MIPSR2 */
107
108/*
109 * TX39 Series
110 */
111#define CP0_TX39_CACHE $7
112
113/*
114 * Coprocessor 1 (FPU) register names
115 */
116#define CP1_REVISION $0
117#define CP1_STATUS $31
118
119/*
120 * FPU Status Register Values
121 */
122/*
123 * Status Register Values
124 */
125
126#define FPU_CSR_FLUSH 0x01000000 /* flush denormalised results to 0 */
127#define FPU_CSR_COND 0x00800000 /* $fcc0 */
128#define FPU_CSR_COND0 0x00800000 /* $fcc0 */
129#define FPU_CSR_COND1 0x02000000 /* $fcc1 */
130#define FPU_CSR_COND2 0x04000000 /* $fcc2 */
131#define FPU_CSR_COND3 0x08000000 /* $fcc3 */
132#define FPU_CSR_COND4 0x10000000 /* $fcc4 */
133#define FPU_CSR_COND5 0x20000000 /* $fcc5 */
134#define FPU_CSR_COND6 0x40000000 /* $fcc6 */
135#define FPU_CSR_COND7 0x80000000 /* $fcc7 */
136
137/*
138 * X the exception cause indicator
139 * E the exception enable
140 * S the sticky/flag bit
141*/
142#define FPU_CSR_ALL_X 0x0003f000
143#define FPU_CSR_UNI_X 0x00020000
144#define FPU_CSR_INV_X 0x00010000
145#define FPU_CSR_DIV_X 0x00008000
146#define FPU_CSR_OVF_X 0x00004000
147#define FPU_CSR_UDF_X 0x00002000
148#define FPU_CSR_INE_X 0x00001000
149
150#define FPU_CSR_ALL_E 0x00000f80
151#define FPU_CSR_INV_E 0x00000800
152#define FPU_CSR_DIV_E 0x00000400
153#define FPU_CSR_OVF_E 0x00000200
154#define FPU_CSR_UDF_E 0x00000100
155#define FPU_CSR_INE_E 0x00000080
156
157#define FPU_CSR_ALL_S 0x0000007c
158#define FPU_CSR_INV_S 0x00000040
159#define FPU_CSR_DIV_S 0x00000020
160#define FPU_CSR_OVF_S 0x00000010
161#define FPU_CSR_UDF_S 0x00000008
162#define FPU_CSR_INE_S 0x00000004
163
164/* rounding mode */
165#define FPU_CSR_RN 0x0 /* nearest */
166#define FPU_CSR_RZ 0x1 /* towards zero */
167#define FPU_CSR_RU 0x2 /* towards +Infinity */
168#define FPU_CSR_RD 0x3 /* towards -Infinity */
169
170
171/*
172 * Values for PageMask register
173 */
174#ifdef CONFIG_CPU_VR41XX
175
176/* Why doesn't stupidity hurt ... */
177
178#define PM_1K 0x00000000
179#define PM_4K 0x00001800
180#define PM_16K 0x00007800
181#define PM_64K 0x0001f800
182#define PM_256K 0x0007f800
183
184#else
185
186#define PM_4K 0x00000000
187#define PM_16K 0x00006000
188#define PM_64K 0x0001e000
189#define PM_256K 0x0007e000
190#define PM_1M 0x001fe000
191#define PM_4M 0x007fe000
192#define PM_16M 0x01ffe000
193#define PM_64M 0x07ffe000
194#define PM_256M 0x1fffe000
195
196#endif
197
198/*
199 * Default page size for a given kernel configuration
200 */
201#ifdef CONFIG_PAGE_SIZE_4KB
202#define PM_DEFAULT_MASK PM_4K
203#elif defined(CONFIG_PAGE_SIZE_16KB)
204#define PM_DEFAULT_MASK PM_16K
205#elif defined(CONFIG_PAGE_SIZE_64KB)
206#define PM_DEFAULT_MASK PM_64K
207#else
208#error Bad page size configuration!
209#endif
210
211
212/*
213 * Values used for computation of new tlb entries
214 */
215#define PL_4K 12
216#define PL_16K 14
217#define PL_64K 16
218#define PL_256K 18
219#define PL_1M 20
220#define PL_4M 22
221#define PL_16M 24
222#define PL_64M 26
223#define PL_256M 28
224
225/*
226 * R4x00 interrupt enable / cause bits
227 */
228#define IE_SW0 (_ULCAST_(1) << 8)
229#define IE_SW1 (_ULCAST_(1) << 9)
230#define IE_IRQ0 (_ULCAST_(1) << 10)
231#define IE_IRQ1 (_ULCAST_(1) << 11)
232#define IE_IRQ2 (_ULCAST_(1) << 12)
233#define IE_IRQ3 (_ULCAST_(1) << 13)
234#define IE_IRQ4 (_ULCAST_(1) << 14)
235#define IE_IRQ5 (_ULCAST_(1) << 15)
236
237/*
238 * R4x00 interrupt cause bits
239 */
240#define C_SW0 (_ULCAST_(1) << 8)
241#define C_SW1 (_ULCAST_(1) << 9)
242#define C_IRQ0 (_ULCAST_(1) << 10)
243#define C_IRQ1 (_ULCAST_(1) << 11)
244#define C_IRQ2 (_ULCAST_(1) << 12)
245#define C_IRQ3 (_ULCAST_(1) << 13)
246#define C_IRQ4 (_ULCAST_(1) << 14)
247#define C_IRQ5 (_ULCAST_(1) << 15)
248
249/*
250 * Bitfields in the R4xx0 cp0 status register
251 */
252#define ST0_IE 0x00000001
253#define ST0_EXL 0x00000002
254#define ST0_ERL 0x00000004
255#define ST0_KSU 0x00000018
256# define KSU_USER 0x00000010
257# define KSU_SUPERVISOR 0x00000008
258# define KSU_KERNEL 0x00000000
259#define ST0_UX 0x00000020
260#define ST0_SX 0x00000040
261#define ST0_KX 0x00000080
262#define ST0_DE 0x00010000
263#define ST0_CE 0x00020000
264
265/*
266 * Setting c0_status.co enables Hit_Writeback and Hit_Writeback_Invalidate
267 * cacheops in userspace. This bit exists only on RM7000 and RM9000
268 * processors.
269 */
270#define ST0_CO 0x08000000
271
272/*
273 * Bitfields in the R[23]000 cp0 status register.
274 */
275#define ST0_IEC 0x00000001
276#define ST0_KUC 0x00000002
277#define ST0_IEP 0x00000004
278#define ST0_KUP 0x00000008
279#define ST0_IEO 0x00000010
280#define ST0_KUO 0x00000020
281/* bits 6 & 7 are reserved on R[23]000 */
282#define ST0_ISC 0x00010000
283#define ST0_SWC 0x00020000
284#define ST0_CM 0x00080000
285
286/*
287 * Bits specific to the R4640/R4650
288 */
289#define ST0_UM (_ULCAST_(1) << 4)
290#define ST0_IL (_ULCAST_(1) << 23)
291#define ST0_DL (_ULCAST_(1) << 24)
292
293/*
294 * Enable the MIPS MDMX and DSP ASEs
295 */
296#define ST0_MX 0x01000000
297
298/*
299 * Bitfields in the TX39 family CP0 Configuration Register 3
300 */
301#define TX39_CONF_ICS_SHIFT 19
302#define TX39_CONF_ICS_MASK 0x00380000
303#define TX39_CONF_ICS_1KB 0x00000000
304#define TX39_CONF_ICS_2KB 0x00080000
305#define TX39_CONF_ICS_4KB 0x00100000
306#define TX39_CONF_ICS_8KB 0x00180000
307#define TX39_CONF_ICS_16KB 0x00200000
308
309#define TX39_CONF_DCS_SHIFT 16
310#define TX39_CONF_DCS_MASK 0x00070000
311#define TX39_CONF_DCS_1KB 0x00000000
312#define TX39_CONF_DCS_2KB 0x00010000
313#define TX39_CONF_DCS_4KB 0x00020000
314#define TX39_CONF_DCS_8KB 0x00030000
315#define TX39_CONF_DCS_16KB 0x00040000
316
317#define TX39_CONF_CWFON 0x00004000
318#define TX39_CONF_WBON 0x00002000
319#define TX39_CONF_RF_SHIFT 10
320#define TX39_CONF_RF_MASK 0x00000c00
321#define TX39_CONF_DOZE 0x00000200
322#define TX39_CONF_HALT 0x00000100
323#define TX39_CONF_LOCK 0x00000080
324#define TX39_CONF_ICE 0x00000020
325#define TX39_CONF_DCE 0x00000010
326#define TX39_CONF_IRSIZE_SHIFT 2
327#define TX39_CONF_IRSIZE_MASK 0x0000000c
328#define TX39_CONF_DRSIZE_SHIFT 0
329#define TX39_CONF_DRSIZE_MASK 0x00000003
330
331/*
332 * Status register bits available in all MIPS CPUs.
333 */
334#define ST0_IM 0x0000ff00
335#define STATUSB_IP0 8
336#define STATUSF_IP0 (_ULCAST_(1) << 8)
337#define STATUSB_IP1 9
338#define STATUSF_IP1 (_ULCAST_(1) << 9)
339#define STATUSB_IP2 10
340#define STATUSF_IP2 (_ULCAST_(1) << 10)
341#define STATUSB_IP3 11
342#define STATUSF_IP3 (_ULCAST_(1) << 11)
343#define STATUSB_IP4 12
344#define STATUSF_IP4 (_ULCAST_(1) << 12)
345#define STATUSB_IP5 13
346#define STATUSF_IP5 (_ULCAST_(1) << 13)
347#define STATUSB_IP6 14
348#define STATUSF_IP6 (_ULCAST_(1) << 14)
349#define STATUSB_IP7 15
350#define STATUSF_IP7 (_ULCAST_(1) << 15)
351#define STATUSB_IP8 0
352#define STATUSF_IP8 (_ULCAST_(1) << 0)
353#define STATUSB_IP9 1
354#define STATUSF_IP9 (_ULCAST_(1) << 1)
355#define STATUSB_IP10 2
356#define STATUSF_IP10 (_ULCAST_(1) << 2)
357#define STATUSB_IP11 3
358#define STATUSF_IP11 (_ULCAST_(1) << 3)
359#define STATUSB_IP12 4
360#define STATUSF_IP12 (_ULCAST_(1) << 4)
361#define STATUSB_IP13 5
362#define STATUSF_IP13 (_ULCAST_(1) << 5)
363#define STATUSB_IP14 6
364#define STATUSF_IP14 (_ULCAST_(1) << 6)
365#define STATUSB_IP15 7
366#define STATUSF_IP15 (_ULCAST_(1) << 7)
367#define ST0_CH 0x00040000
368#define ST0_SR 0x00100000
369#define ST0_TS 0x00200000
370#define ST0_BEV 0x00400000
371#define ST0_RE 0x02000000
372#define ST0_FR 0x04000000
373#define ST0_CU 0xf0000000
374#define ST0_CU0 0x10000000
375#define ST0_CU1 0x20000000
376#define ST0_CU2 0x40000000
377#define ST0_CU3 0x80000000
378#define ST0_XX 0x80000000 /* MIPS IV naming */
379
380/*
381 * Bitfields and bit numbers in the coprocessor 0 cause register.
382 *
383 * Refer to your MIPS R4xx0 manual, chapter 5 for explanation.
384 */
385#define CAUSEB_EXCCODE 2
386#define CAUSEF_EXCCODE (_ULCAST_(31) << 2)
387#define CAUSEB_IP 8
388#define CAUSEF_IP (_ULCAST_(255) << 8)
389#define CAUSEB_IP0 8
390#define CAUSEF_IP0 (_ULCAST_(1) << 8)
391#define CAUSEB_IP1 9
392#define CAUSEF_IP1 (_ULCAST_(1) << 9)
393#define CAUSEB_IP2 10
394#define CAUSEF_IP2 (_ULCAST_(1) << 10)
395#define CAUSEB_IP3 11
396#define CAUSEF_IP3 (_ULCAST_(1) << 11)
397#define CAUSEB_IP4 12
398#define CAUSEF_IP4 (_ULCAST_(1) << 12)
399#define CAUSEB_IP5 13
400#define CAUSEF_IP5 (_ULCAST_(1) << 13)
401#define CAUSEB_IP6 14
402#define CAUSEF_IP6 (_ULCAST_(1) << 14)
403#define CAUSEB_IP7 15
404#define CAUSEF_IP7 (_ULCAST_(1) << 15)
405#define CAUSEB_IV 23
406#define CAUSEF_IV (_ULCAST_(1) << 23)
407#define CAUSEB_CE 28
408#define CAUSEF_CE (_ULCAST_(3) << 28)
409#define CAUSEB_BD 31
410#define CAUSEF_BD (_ULCAST_(1) << 31)
411
412/*
413 * Bits in the coprocessor 0 config register.
414 */
415/* Generic bits. */
416#define CONF_CM_CACHABLE_NO_WA 0
417#define CONF_CM_CACHABLE_WA 1
418#define CONF_CM_UNCACHED 2
419#define CONF_CM_CACHABLE_NONCOHERENT 3
420#define CONF_CM_CACHABLE_CE 4
421#define CONF_CM_CACHABLE_COW 5
422#define CONF_CM_CACHABLE_CUW 6
423#define CONF_CM_CACHABLE_ACCELERATED 7
424#define CONF_CM_CMASK 7
425#define CONF_BE (_ULCAST_(1) << 15)
426
427/* Bits common to various processors. */
428#define CONF_CU (_ULCAST_(1) << 3)
429#define CONF_DB (_ULCAST_(1) << 4)
430#define CONF_IB (_ULCAST_(1) << 5)
431#define CONF_DC (_ULCAST_(7) << 6)
432#define CONF_IC (_ULCAST_(7) << 9)
433#define CONF_EB (_ULCAST_(1) << 13)
434#define CONF_EM (_ULCAST_(1) << 14)
435#define CONF_SM (_ULCAST_(1) << 16)
436#define CONF_SC (_ULCAST_(1) << 17)
437#define CONF_EW (_ULCAST_(3) << 18)
438#define CONF_EP (_ULCAST_(15)<< 24)
439#define CONF_EC (_ULCAST_(7) << 28)
440#define CONF_CM (_ULCAST_(1) << 31)
441
442/* Bits specific to the R4xx0. */
443#define R4K_CONF_SW (_ULCAST_(1) << 20)
444#define R4K_CONF_SS (_ULCAST_(1) << 21)
445#define R4K_CONF_SB (_ULCAST_(3) << 22)
446
447/* Bits specific to the R5000. */
448#define R5K_CONF_SE (_ULCAST_(1) << 12)
449#define R5K_CONF_SS (_ULCAST_(3) << 20)
450
451/* Bits specific to the RM7000. */
452#define RM7K_CONF_SE (_ULCAST_(1) << 3)
453#define RM7K_CONF_TE (_ULCAST_(1) << 12)
454#define RM7K_CONF_CLK (_ULCAST_(1) << 16)
455#define RM7K_CONF_TC (_ULCAST_(1) << 17)
456#define RM7K_CONF_SI (_ULCAST_(3) << 20)
457#define RM7K_CONF_SC (_ULCAST_(1) << 31)
458
459/* Bits specific to the R10000. */
460#define R10K_CONF_DN (_ULCAST_(3) << 3)
461#define R10K_CONF_CT (_ULCAST_(1) << 5)
462#define R10K_CONF_PE (_ULCAST_(1) << 6)
463#define R10K_CONF_PM (_ULCAST_(3) << 7)
464#define R10K_CONF_EC (_ULCAST_(15)<< 9)
465#define R10K_CONF_SB (_ULCAST_(1) << 13)
466#define R10K_CONF_SK (_ULCAST_(1) << 14)
467#define R10K_CONF_SS (_ULCAST_(7) << 16)
468#define R10K_CONF_SC (_ULCAST_(7) << 19)
469#define R10K_CONF_DC (_ULCAST_(7) << 26)
470#define R10K_CONF_IC (_ULCAST_(7) << 29)
471
472/* Bits specific to the VR41xx. */
473#define VR41_CONF_CS (_ULCAST_(1) << 12)
474#define VR41_CONF_P4K (_ULCAST_(1) << 13)
475#define VR41_CONF_BP (_ULCAST_(1) << 16)
476#define VR41_CONF_M16 (_ULCAST_(1) << 20)
477#define VR41_CONF_AD (_ULCAST_(1) << 23)
478
479/* Bits specific to the R30xx. */
480#define R30XX_CONF_FDM (_ULCAST_(1) << 19)
481#define R30XX_CONF_REV (_ULCAST_(1) << 22)
482#define R30XX_CONF_AC (_ULCAST_(1) << 23)
483#define R30XX_CONF_RF (_ULCAST_(1) << 24)
484#define R30XX_CONF_HALT (_ULCAST_(1) << 25)
485#define R30XX_CONF_FPINT (_ULCAST_(7) << 26)
486#define R30XX_CONF_DBR (_ULCAST_(1) << 29)
487#define R30XX_CONF_SB (_ULCAST_(1) << 30)
488#define R30XX_CONF_LOCK (_ULCAST_(1) << 31)
489
490/* Bits specific to the TX49. */
491#define TX49_CONF_DC (_ULCAST_(1) << 16)
492#define TX49_CONF_IC (_ULCAST_(1) << 17) /* conflict with CONF_SC */
493#define TX49_CONF_HALT (_ULCAST_(1) << 18)
494#define TX49_CONF_CWFON (_ULCAST_(1) << 27)
495
496/* Bits specific to the MIPS32/64 PRA. */
497#define MIPS_CONF_MT (_ULCAST_(7) << 7)
498#define MIPS_CONF_AR (_ULCAST_(7) << 10)
499#define MIPS_CONF_AT (_ULCAST_(3) << 13)
500#define MIPS_CONF_M (_ULCAST_(1) << 31)
501
502/*
503 * Bits in the MIPS32/64 PRA coprocessor 0 config registers 1 and above.
504 */
505#define MIPS_CONF1_FP (_ULCAST_(1) << 0)
506#define MIPS_CONF1_EP (_ULCAST_(1) << 1)
507#define MIPS_CONF1_CA (_ULCAST_(1) << 2)
508#define MIPS_CONF1_WR (_ULCAST_(1) << 3)
509#define MIPS_CONF1_PC (_ULCAST_(1) << 4)
510#define MIPS_CONF1_MD (_ULCAST_(1) << 5)
511#define MIPS_CONF1_C2 (_ULCAST_(1) << 6)
512#define MIPS_CONF1_DA (_ULCAST_(7) << 7)
513#define MIPS_CONF1_DL (_ULCAST_(7) << 10)
514#define MIPS_CONF1_DS (_ULCAST_(7) << 13)
515#define MIPS_CONF1_IA (_ULCAST_(7) << 16)
516#define MIPS_CONF1_IL (_ULCAST_(7) << 19)
517#define MIPS_CONF1_IS (_ULCAST_(7) << 22)
518#define MIPS_CONF1_TLBS (_ULCAST_(63)<< 25)
519
520#define MIPS_CONF2_SA (_ULCAST_(15)<< 0)
521#define MIPS_CONF2_SL (_ULCAST_(15)<< 4)
522#define MIPS_CONF2_SS (_ULCAST_(15)<< 8)
523#define MIPS_CONF2_SU (_ULCAST_(15)<< 12)
524#define MIPS_CONF2_TA (_ULCAST_(15)<< 16)
525#define MIPS_CONF2_TL (_ULCAST_(15)<< 20)
526#define MIPS_CONF2_TS (_ULCAST_(15)<< 24)
527#define MIPS_CONF2_TU (_ULCAST_(7) << 28)
528
529#define MIPS_CONF3_TL (_ULCAST_(1) << 0)
530#define MIPS_CONF3_SM (_ULCAST_(1) << 1)
531#define MIPS_CONF3_MT (_ULCAST_(1) << 2)
532#define MIPS_CONF3_SP (_ULCAST_(1) << 4)
533#define MIPS_CONF3_VINT (_ULCAST_(1) << 5)
534#define MIPS_CONF3_VEIC (_ULCAST_(1) << 6)
535#define MIPS_CONF3_LPA (_ULCAST_(1) << 7)
536#define MIPS_CONF3_DSP (_ULCAST_(1) << 10)
537#define MIPS_CONF3_ULRI (_ULCAST_(1) << 13)
538
539#define MIPS_CONF7_WII (_ULCAST_(1) << 31)
540
541#define MIPS_CONF7_RPS (_ULCAST_(1) << 2)
542
543
544/*
545 * Bits in the MIPS32/64 coprocessor 1 (FPU) revision register.
546 */
547#define MIPS_FPIR_S (_ULCAST_(1) << 16)
548#define MIPS_FPIR_D (_ULCAST_(1) << 17)
549#define MIPS_FPIR_PS (_ULCAST_(1) << 18)
550#define MIPS_FPIR_3D (_ULCAST_(1) << 19)
551#define MIPS_FPIR_W (_ULCAST_(1) << 20)
552#define MIPS_FPIR_L (_ULCAST_(1) << 21)
553#define MIPS_FPIR_F64 (_ULCAST_(1) << 22)
554
555#ifndef __ASSEMBLY__
556
557/*
558 * Functions to access the R10000 performance counters. These are basically
559 * mfc0 and mtc0 instructions from and to coprocessor register with a 5-bit
560 * performance counter number encoded into bits 1 ... 5 of the instruction.
561 * Only performance counters 0 to 1 actually exist, so for a non-R10000 aware
562 * disassembler these will look like an access to sel 0 or 1.
563 */
564#define read_r10k_perf_cntr(counter) \
565({ \
566 unsigned int __res; \
567 __asm__ __volatile__( \
568 "mfpc\t%0, %1" \
569 : "=r" (__res) \
570 : "i" (counter)); \
571 \
572 __res; \
573})
574
575#define write_r10k_perf_cntr(counter,val) \
576do { \
577 __asm__ __volatile__( \
578 "mtpc\t%0, %1" \
579 : \
580 : "r" (val), "i" (counter)); \
581} while (0)
582
583#define read_r10k_perf_event(counter) \
584({ \
585 unsigned int __res; \
586 __asm__ __volatile__( \
587 "mfps\t%0, %1" \
588 : "=r" (__res) \
589 : "i" (counter)); \
590 \
591 __res; \
592})
593
594#define write_r10k_perf_cntl(counter,val) \
595do { \
596 __asm__ __volatile__( \
597 "mtps\t%0, %1" \
598 : \
599 : "r" (val), "i" (counter)); \
600} while (0)
601
602
603/*
604 * Macros to access the system control coprocessor
605 */
606
607#define __read_32bit_c0_register(source, sel) \
608({ int __res; \
609 if (sel == 0) \
610 __asm__ __volatile__( \
611 "mfc0\t%0, " #source "\n\t" \
612 : "=r" (__res)); \
613 else \
614 __asm__ __volatile__( \
615 ".set\tmips32\n\t" \
616 "mfc0\t%0, " #source ", " #sel "\n\t" \
617 ".set\tmips0\n\t" \
618 : "=r" (__res)); \
619 __res; \
620})
621
622#define __read_64bit_c0_register(source, sel) \
623({ unsigned long long __res; \
624 if (sizeof(unsigned long) == 4) \
625 __res = __read_64bit_c0_split(source, sel); \
626 else if (sel == 0) \
627 __asm__ __volatile__( \
628 ".set\tmips3\n\t" \
629 "dmfc0\t%0, " #source "\n\t" \
630 ".set\tmips0" \
631 : "=r" (__res)); \
632 else \
633 __asm__ __volatile__( \
634 ".set\tmips64\n\t" \
635 "dmfc0\t%0, " #source ", " #sel "\n\t" \
636 ".set\tmips0" \
637 : "=r" (__res)); \
638 __res; \
639})
640
641#define __write_32bit_c0_register(register, sel, value) \
642do { \
643 if (sel == 0) \
644 __asm__ __volatile__( \
645 "mtc0\t%z0, " #register "\n\t" \
646 : : "Jr" ((unsigned int)(value))); \
647 else \
648 __asm__ __volatile__( \
649 ".set\tmips32\n\t" \
650 "mtc0\t%z0, " #register ", " #sel "\n\t" \
651 ".set\tmips0" \
652 : : "Jr" ((unsigned int)(value))); \
653} while (0)
654
655#define __write_64bit_c0_register(register, sel, value) \
656do { \
657 if (sizeof(unsigned long) == 4) \
658 __write_64bit_c0_split(register, sel, value); \
659 else if (sel == 0) \
660 __asm__ __volatile__( \
661 ".set\tmips3\n\t" \
662 "dmtc0\t%z0, " #register "\n\t" \
663 ".set\tmips0" \
664 : : "Jr" (value)); \
665 else \
666 __asm__ __volatile__( \
667 ".set\tmips64\n\t" \
668 "dmtc0\t%z0, " #register ", " #sel "\n\t" \
669 ".set\tmips0" \
670 : : "Jr" (value)); \
671} while (0)
672
673#define __read_ulong_c0_register(reg, sel) \
674 ((sizeof(unsigned long) == 4) ? \
675 (unsigned long) __read_32bit_c0_register(reg, sel) : \
676 (unsigned long) __read_64bit_c0_register(reg, sel))
677
678#define __write_ulong_c0_register(reg, sel, val) \
679do { \
680 if (sizeof(unsigned long) == 4) \
681 __write_32bit_c0_register(reg, sel, val); \
682 else \
683 __write_64bit_c0_register(reg, sel, val); \
684} while (0)
685
686/*
687 * On RM7000/RM9000 these are uses to access cop0 set 1 registers
688 */
689#define __read_32bit_c0_ctrl_register(source) \
690({ int __res; \
691 __asm__ __volatile__( \
692 "cfc0\t%0, " #source "\n\t" \
693 : "=r" (__res)); \
694 __res; \
695})
696
697#define __write_32bit_c0_ctrl_register(register, value) \
698do { \
699 __asm__ __volatile__( \
700 "ctc0\t%z0, " #register "\n\t" \
701 : : "Jr" ((unsigned int)(value))); \
702} while (0)
703
704/*
705 * These versions are only needed for systems with more than 38 bits of
706 * physical address space running the 32-bit kernel. That's none atm :-)
707 */
708#define __read_64bit_c0_split(source, sel) \
709({ \
710 unsigned long long __val; \
711 unsigned long __flags; \
712 \
713 local_irq_save(__flags); \
714 if (sel == 0) \
715 __asm__ __volatile__( \
716 ".set\tmips64\n\t" \
717 "dmfc0\t%M0, " #source "\n\t" \
718 "dsll\t%L0, %M0, 32\n\t" \
719 "dsrl\t%M0, %M0, 32\n\t" \
720 "dsrl\t%L0, %L0, 32\n\t" \
721 ".set\tmips0" \
722 : "=r" (__val)); \
723 else \
724 __asm__ __volatile__( \
725 ".set\tmips64\n\t" \
726 "dmfc0\t%M0, " #source ", " #sel "\n\t" \
727 "dsll\t%L0, %M0, 32\n\t" \
728 "dsrl\t%M0, %M0, 32\n\t" \
729 "dsrl\t%L0, %L0, 32\n\t" \
730 ".set\tmips0" \
731 : "=r" (__val)); \
732 local_irq_restore(__flags); \
733 \
734 __val; \
735})
736
737#define __write_64bit_c0_split(source, sel, val) \
738do { \
739 unsigned long __flags; \
740 \
741 local_irq_save(__flags); \
742 if (sel == 0) \
743 __asm__ __volatile__( \
744 ".set\tmips64\n\t" \
745 "dsll\t%L0, %L0, 32\n\t" \
746 "dsrl\t%L0, %L0, 32\n\t" \
747 "dsll\t%M0, %M0, 32\n\t" \
748 "or\t%L0, %L0, %M0\n\t" \
749 "dmtc0\t%L0, " #source "\n\t" \
750 ".set\tmips0" \
751 : : "r" (val)); \
752 else \
753 __asm__ __volatile__( \
754 ".set\tmips64\n\t" \
755 "dsll\t%L0, %L0, 32\n\t" \
756 "dsrl\t%L0, %L0, 32\n\t" \
757 "dsll\t%M0, %M0, 32\n\t" \
758 "or\t%L0, %L0, %M0\n\t" \
759 "dmtc0\t%L0, " #source ", " #sel "\n\t" \
760 ".set\tmips0" \
761 : : "r" (val)); \
762 local_irq_restore(__flags); \
763} while (0)
764
765#define read_c0_index() __read_32bit_c0_register($0, 0)
766#define write_c0_index(val) __write_32bit_c0_register($0, 0, val)
767
768#define read_c0_random() __read_32bit_c0_register($1, 0)
769#define write_c0_random(val) __write_32bit_c0_register($1, 0, val)
770
771#define read_c0_entrylo0() __read_ulong_c0_register($2, 0)
772#define write_c0_entrylo0(val) __write_ulong_c0_register($2, 0, val)
773
774#define read_c0_entrylo1() __read_ulong_c0_register($3, 0)
775#define write_c0_entrylo1(val) __write_ulong_c0_register($3, 0, val)
776
777#define read_c0_conf() __read_32bit_c0_register($3, 0)
778#define write_c0_conf(val) __write_32bit_c0_register($3, 0, val)
779
780#define read_c0_context() __read_ulong_c0_register($4, 0)
781#define write_c0_context(val) __write_ulong_c0_register($4, 0, val)
782
783#define read_c0_userlocal() __read_ulong_c0_register($4, 2)
784#define write_c0_userlocal(val) __write_ulong_c0_register($4, 2, val)
785
786#define read_c0_pagemask() __read_32bit_c0_register($5, 0)
787#define write_c0_pagemask(val) __write_32bit_c0_register($5, 0, val)
788
789#define read_c0_wired() __read_32bit_c0_register($6, 0)
790#define write_c0_wired(val) __write_32bit_c0_register($6, 0, val)
791
792#define read_c0_info() __read_32bit_c0_register($7, 0)
793
794#define read_c0_cache() __read_32bit_c0_register($7, 0) /* TX39xx */
795#define write_c0_cache(val) __write_32bit_c0_register($7, 0, val)
796
797#define read_c0_badvaddr() __read_ulong_c0_register($8, 0)
798#define write_c0_badvaddr(val) __write_ulong_c0_register($8, 0, val)
799
800#define read_c0_count() __read_32bit_c0_register($9, 0)
801#define write_c0_count(val) __write_32bit_c0_register($9, 0, val)
802
803#define read_c0_count2() __read_32bit_c0_register($9, 6) /* pnx8550 */
804#define write_c0_count2(val) __write_32bit_c0_register($9, 6, val)
805
806#define read_c0_count3() __read_32bit_c0_register($9, 7) /* pnx8550 */
807#define write_c0_count3(val) __write_32bit_c0_register($9, 7, val)
808
809#define read_c0_entryhi() __read_ulong_c0_register($10, 0)
810#define write_c0_entryhi(val) __write_ulong_c0_register($10, 0, val)
811
812#define read_c0_compare() __read_32bit_c0_register($11, 0)
813#define write_c0_compare(val) __write_32bit_c0_register($11, 0, val)
814
815#define read_c0_compare2() __read_32bit_c0_register($11, 6) /* pnx8550 */
816#define write_c0_compare2(val) __write_32bit_c0_register($11, 6, val)
817
818#define read_c0_compare3() __read_32bit_c0_register($11, 7) /* pnx8550 */
819#define write_c0_compare3(val) __write_32bit_c0_register($11, 7, val)
820
821#define read_c0_status() __read_32bit_c0_register($12, 0)
822#ifdef CONFIG_MIPS_MT_SMTC
823#define write_c0_status(val) \
824do { \
825 __write_32bit_c0_register($12, 0, val); \
826 __ehb(); \
827} while (0)
828#else
829/*
830 * Legacy non-SMTC code, which may be hazardous
831 * but which might not support EHB
832 */
833#define write_c0_status(val) __write_32bit_c0_register($12, 0, val)
834#endif /* CONFIG_MIPS_MT_SMTC */
835
836#define read_c0_cause() __read_32bit_c0_register($13, 0)
837#define write_c0_cause(val) __write_32bit_c0_register($13, 0, val)
838
839#define read_c0_epc() __read_ulong_c0_register($14, 0)
840#define write_c0_epc(val) __write_ulong_c0_register($14, 0, val)
841
842#define read_c0_prid() __read_32bit_c0_register($15, 0)
843
844#define read_c0_config() __read_32bit_c0_register($16, 0)
845#define read_c0_config1() __read_32bit_c0_register($16, 1)
846#define read_c0_config2() __read_32bit_c0_register($16, 2)
847#define read_c0_config3() __read_32bit_c0_register($16, 3)
848#define read_c0_config4() __read_32bit_c0_register($16, 4)
849#define read_c0_config5() __read_32bit_c0_register($16, 5)
850#define read_c0_config6() __read_32bit_c0_register($16, 6)
851#define read_c0_config7() __read_32bit_c0_register($16, 7)
852#define write_c0_config(val) __write_32bit_c0_register($16, 0, val)
853#define write_c0_config1(val) __write_32bit_c0_register($16, 1, val)
854#define write_c0_config2(val) __write_32bit_c0_register($16, 2, val)
855#define write_c0_config3(val) __write_32bit_c0_register($16, 3, val)
856#define write_c0_config4(val) __write_32bit_c0_register($16, 4, val)
857#define write_c0_config5(val) __write_32bit_c0_register($16, 5, val)
858#define write_c0_config6(val) __write_32bit_c0_register($16, 6, val)
859#define write_c0_config7(val) __write_32bit_c0_register($16, 7, val)
860
861/*
862 * The WatchLo register. There may be upto 8 of them.
863 */
864#define read_c0_watchlo0() __read_ulong_c0_register($18, 0)
865#define read_c0_watchlo1() __read_ulong_c0_register($18, 1)
866#define read_c0_watchlo2() __read_ulong_c0_register($18, 2)
867#define read_c0_watchlo3() __read_ulong_c0_register($18, 3)
868#define read_c0_watchlo4() __read_ulong_c0_register($18, 4)
869#define read_c0_watchlo5() __read_ulong_c0_register($18, 5)
870#define read_c0_watchlo6() __read_ulong_c0_register($18, 6)
871#define read_c0_watchlo7() __read_ulong_c0_register($18, 7)
872#define write_c0_watchlo0(val) __write_ulong_c0_register($18, 0, val)
873#define write_c0_watchlo1(val) __write_ulong_c0_register($18, 1, val)
874#define write_c0_watchlo2(val) __write_ulong_c0_register($18, 2, val)
875#define write_c0_watchlo3(val) __write_ulong_c0_register($18, 3, val)
876#define write_c0_watchlo4(val) __write_ulong_c0_register($18, 4, val)
877#define write_c0_watchlo5(val) __write_ulong_c0_register($18, 5, val)
878#define write_c0_watchlo6(val) __write_ulong_c0_register($18, 6, val)
879#define write_c0_watchlo7(val) __write_ulong_c0_register($18, 7, val)
880
881/*
882 * The WatchHi register. There may be upto 8 of them.
883 */
884#define read_c0_watchhi0() __read_32bit_c0_register($19, 0)
885#define read_c0_watchhi1() __read_32bit_c0_register($19, 1)
886#define read_c0_watchhi2() __read_32bit_c0_register($19, 2)
887#define read_c0_watchhi3() __read_32bit_c0_register($19, 3)
888#define read_c0_watchhi4() __read_32bit_c0_register($19, 4)
889#define read_c0_watchhi5() __read_32bit_c0_register($19, 5)
890#define read_c0_watchhi6() __read_32bit_c0_register($19, 6)
891#define read_c0_watchhi7() __read_32bit_c0_register($19, 7)
892
893#define write_c0_watchhi0(val) __write_32bit_c0_register($19, 0, val)
894#define write_c0_watchhi1(val) __write_32bit_c0_register($19, 1, val)
895#define write_c0_watchhi2(val) __write_32bit_c0_register($19, 2, val)
896#define write_c0_watchhi3(val) __write_32bit_c0_register($19, 3, val)
897#define write_c0_watchhi4(val) __write_32bit_c0_register($19, 4, val)
898#define write_c0_watchhi5(val) __write_32bit_c0_register($19, 5, val)
899#define write_c0_watchhi6(val) __write_32bit_c0_register($19, 6, val)
900#define write_c0_watchhi7(val) __write_32bit_c0_register($19, 7, val)
901
902#define read_c0_xcontext() __read_ulong_c0_register($20, 0)
903#define write_c0_xcontext(val) __write_ulong_c0_register($20, 0, val)
904
905#define read_c0_intcontrol() __read_32bit_c0_ctrl_register($20)
906#define write_c0_intcontrol(val) __write_32bit_c0_ctrl_register($20, val)
907
908#define read_c0_framemask() __read_32bit_c0_register($21, 0)
909#define write_c0_framemask(val) __write_32bit_c0_register($21, 0, val)
910
911/* RM9000 PerfControl performance counter control register */
912#define read_c0_perfcontrol() __read_32bit_c0_register($22, 0)
913#define write_c0_perfcontrol(val) __write_32bit_c0_register($22, 0, val)
914
915#define read_c0_diag() __read_32bit_c0_register($22, 0)
916#define write_c0_diag(val) __write_32bit_c0_register($22, 0, val)
917
918#define read_c0_diag1() __read_32bit_c0_register($22, 1)
919#define write_c0_diag1(val) __write_32bit_c0_register($22, 1, val)
920
921#define read_c0_diag2() __read_32bit_c0_register($22, 2)
922#define write_c0_diag2(val) __write_32bit_c0_register($22, 2, val)
923
924#define read_c0_diag3() __read_32bit_c0_register($22, 3)
925#define write_c0_diag3(val) __write_32bit_c0_register($22, 3, val)
926
927#define read_c0_diag4() __read_32bit_c0_register($22, 4)
928#define write_c0_diag4(val) __write_32bit_c0_register($22, 4, val)
929
930#define read_c0_diag5() __read_32bit_c0_register($22, 5)
931#define write_c0_diag5(val) __write_32bit_c0_register($22, 5, val)
932
933#define read_c0_debug() __read_32bit_c0_register($23, 0)
934#define write_c0_debug(val) __write_32bit_c0_register($23, 0, val)
935
936#define read_c0_depc() __read_ulong_c0_register($24, 0)
937#define write_c0_depc(val) __write_ulong_c0_register($24, 0, val)
938
939/*
940 * MIPS32 / MIPS64 performance counters
941 */
942#define read_c0_perfctrl0() __read_32bit_c0_register($25, 0)
943#define write_c0_perfctrl0(val) __write_32bit_c0_register($25, 0, val)
944#define read_c0_perfcntr0() __read_32bit_c0_register($25, 1)
945#define write_c0_perfcntr0(val) __write_32bit_c0_register($25, 1, val)
946#define read_c0_perfctrl1() __read_32bit_c0_register($25, 2)
947#define write_c0_perfctrl1(val) __write_32bit_c0_register($25, 2, val)
948#define read_c0_perfcntr1() __read_32bit_c0_register($25, 3)
949#define write_c0_perfcntr1(val) __write_32bit_c0_register($25, 3, val)
950#define read_c0_perfctrl2() __read_32bit_c0_register($25, 4)
951#define write_c0_perfctrl2(val) __write_32bit_c0_register($25, 4, val)
952#define read_c0_perfcntr2() __read_32bit_c0_register($25, 5)
953#define write_c0_perfcntr2(val) __write_32bit_c0_register($25, 5, val)
954#define read_c0_perfctrl3() __read_32bit_c0_register($25, 6)
955#define write_c0_perfctrl3(val) __write_32bit_c0_register($25, 6, val)
956#define read_c0_perfcntr3() __read_32bit_c0_register($25, 7)
957#define write_c0_perfcntr3(val) __write_32bit_c0_register($25, 7, val)
958
959/* RM9000 PerfCount performance counter register */
960#define read_c0_perfcount() __read_64bit_c0_register($25, 0)
961#define write_c0_perfcount(val) __write_64bit_c0_register($25, 0, val)
962
963#define read_c0_ecc() __read_32bit_c0_register($26, 0)
964#define write_c0_ecc(val) __write_32bit_c0_register($26, 0, val)
965
966#define read_c0_derraddr0() __read_ulong_c0_register($26, 1)
967#define write_c0_derraddr0(val) __write_ulong_c0_register($26, 1, val)
968
969#define read_c0_cacheerr() __read_32bit_c0_register($27, 0)
970
971#define read_c0_derraddr1() __read_ulong_c0_register($27, 1)
972#define write_c0_derraddr1(val) __write_ulong_c0_register($27, 1, val)
973
974#define read_c0_taglo() __read_32bit_c0_register($28, 0)
975#define write_c0_taglo(val) __write_32bit_c0_register($28, 0, val)
976
977#define read_c0_dtaglo() __read_32bit_c0_register($28, 2)
978#define write_c0_dtaglo(val) __write_32bit_c0_register($28, 2, val)
979
980#define read_c0_taghi() __read_32bit_c0_register($29, 0)
981#define write_c0_taghi(val) __write_32bit_c0_register($29, 0, val)
982
983#define read_c0_errorepc() __read_ulong_c0_register($30, 0)
984#define write_c0_errorepc(val) __write_ulong_c0_register($30, 0, val)
985
986/* MIPSR2 */
987#define read_c0_hwrena() __read_32bit_c0_register($7, 0)
988#define write_c0_hwrena(val) __write_32bit_c0_register($7, 0, val)
989
990#define read_c0_intctl() __read_32bit_c0_register($12, 1)
991#define write_c0_intctl(val) __write_32bit_c0_register($12, 1, val)
992
993#define read_c0_srsctl() __read_32bit_c0_register($12, 2)
994#define write_c0_srsctl(val) __write_32bit_c0_register($12, 2, val)
995
996#define read_c0_srsmap() __read_32bit_c0_register($12, 3)
997#define write_c0_srsmap(val) __write_32bit_c0_register($12, 3, val)
998
999#define read_c0_ebase() __read_32bit_c0_register($15, 1)
1000#define write_c0_ebase(val) __write_32bit_c0_register($15, 1, val)
1001
1002/*
1003 * Macros to access the floating point coprocessor control registers
1004 */
1005#define read_32bit_cp1_register(source) \
1006({ int __res; \
1007 __asm__ __volatile__( \
1008 ".set\tpush\n\t" \
1009 ".set\treorder\n\t" \
1010 "cfc1\t%0,"STR(source)"\n\t" \
1011 ".set\tpop" \
1012 : "=r" (__res)); \
1013 __res;})
1014
1015#define rddsp(mask) \
1016({ \
1017 unsigned int __res; \
1018 \
1019 __asm__ __volatile__( \
1020 " .set push \n" \
1021 " .set noat \n" \
1022 " # rddsp $1, %x1 \n" \
1023 " .word 0x7c000cb8 | (%x1 << 16) \n" \
1024 " move %0, $1 \n" \
1025 " .set pop \n" \
1026 : "=r" (__res) \
1027 : "i" (mask)); \
1028 __res; \
1029})
1030
1031#define wrdsp(val, mask) \
1032do { \
1033 __asm__ __volatile__( \
1034 " .set push \n" \
1035 " .set noat \n" \
1036 " move $1, %0 \n" \
1037 " # wrdsp $1, %x1 \n" \
1038 " .word 0x7c2004f8 | (%x1 << 11) \n" \
1039 " .set pop \n" \
1040 : \
1041 : "r" (val), "i" (mask)); \
1042} while (0)
1043
1044#if 0 /* Need DSP ASE capable assembler ... */
1045#define mflo0() ({ long mflo0; __asm__("mflo %0, $ac0" : "=r" (mflo0)); mflo0;})
1046#define mflo1() ({ long mflo1; __asm__("mflo %0, $ac1" : "=r" (mflo1)); mflo1;})
1047#define mflo2() ({ long mflo2; __asm__("mflo %0, $ac2" : "=r" (mflo2)); mflo2;})
1048#define mflo3() ({ long mflo3; __asm__("mflo %0, $ac3" : "=r" (mflo3)); mflo3;})
1049
1050#define mfhi0() ({ long mfhi0; __asm__("mfhi %0, $ac0" : "=r" (mfhi0)); mfhi0;})
1051#define mfhi1() ({ long mfhi1; __asm__("mfhi %0, $ac1" : "=r" (mfhi1)); mfhi1;})
1052#define mfhi2() ({ long mfhi2; __asm__("mfhi %0, $ac2" : "=r" (mfhi2)); mfhi2;})
1053#define mfhi3() ({ long mfhi3; __asm__("mfhi %0, $ac3" : "=r" (mfhi3)); mfhi3;})
1054
1055#define mtlo0(x) __asm__("mtlo %0, $ac0" ::"r" (x))
1056#define mtlo1(x) __asm__("mtlo %0, $ac1" ::"r" (x))
1057#define mtlo2(x) __asm__("mtlo %0, $ac2" ::"r" (x))
1058#define mtlo3(x) __asm__("mtlo %0, $ac3" ::"r" (x))
1059
1060#define mthi0(x) __asm__("mthi %0, $ac0" ::"r" (x))
1061#define mthi1(x) __asm__("mthi %0, $ac1" ::"r" (x))
1062#define mthi2(x) __asm__("mthi %0, $ac2" ::"r" (x))
1063#define mthi3(x) __asm__("mthi %0, $ac3" ::"r" (x))
1064
1065#else
1066
1067#define mfhi0() \
1068({ \
1069 unsigned long __treg; \
1070 \
1071 __asm__ __volatile__( \
1072 " .set push \n" \
1073 " .set noat \n" \
1074 " # mfhi %0, $ac0 \n" \
1075 " .word 0x00000810 \n" \
1076 " move %0, $1 \n" \
1077 " .set pop \n" \
1078 : "=r" (__treg)); \
1079 __treg; \
1080})
1081
1082#define mfhi1() \
1083({ \
1084 unsigned long __treg; \
1085 \
1086 __asm__ __volatile__( \
1087 " .set push \n" \
1088 " .set noat \n" \
1089 " # mfhi %0, $ac1 \n" \
1090 " .word 0x00200810 \n" \
1091 " move %0, $1 \n" \
1092 " .set pop \n" \
1093 : "=r" (__treg)); \
1094 __treg; \
1095})
1096
1097#define mfhi2() \
1098({ \
1099 unsigned long __treg; \
1100 \
1101 __asm__ __volatile__( \
1102 " .set push \n" \
1103 " .set noat \n" \
1104 " # mfhi %0, $ac2 \n" \
1105 " .word 0x00400810 \n" \
1106 " move %0, $1 \n" \
1107 " .set pop \n" \
1108 : "=r" (__treg)); \
1109 __treg; \
1110})
1111
1112#define mfhi3() \
1113({ \
1114 unsigned long __treg; \
1115 \
1116 __asm__ __volatile__( \
1117 " .set push \n" \
1118 " .set noat \n" \
1119 " # mfhi %0, $ac3 \n" \
1120 " .word 0x00600810 \n" \
1121 " move %0, $1 \n" \
1122 " .set pop \n" \
1123 : "=r" (__treg)); \
1124 __treg; \
1125})
1126
1127#define mflo0() \
1128({ \
1129 unsigned long __treg; \
1130 \
1131 __asm__ __volatile__( \
1132 " .set push \n" \
1133 " .set noat \n" \
1134 " # mflo %0, $ac0 \n" \
1135 " .word 0x00000812 \n" \
1136 " move %0, $1 \n" \
1137 " .set pop \n" \
1138 : "=r" (__treg)); \
1139 __treg; \
1140})
1141
1142#define mflo1() \
1143({ \
1144 unsigned long __treg; \
1145 \
1146 __asm__ __volatile__( \
1147 " .set push \n" \
1148 " .set noat \n" \
1149 " # mflo %0, $ac1 \n" \
1150 " .word 0x00200812 \n" \
1151 " move %0, $1 \n" \
1152 " .set pop \n" \
1153 : "=r" (__treg)); \
1154 __treg; \
1155})
1156
1157#define mflo2() \
1158({ \
1159 unsigned long __treg; \
1160 \
1161 __asm__ __volatile__( \
1162 " .set push \n" \
1163 " .set noat \n" \
1164 " # mflo %0, $ac2 \n" \
1165 " .word 0x00400812 \n" \
1166 " move %0, $1 \n" \
1167 " .set pop \n" \
1168 : "=r" (__treg)); \
1169 __treg; \
1170})
1171
1172#define mflo3() \
1173({ \
1174 unsigned long __treg; \
1175 \
1176 __asm__ __volatile__( \
1177 " .set push \n" \
1178 " .set noat \n" \
1179 " # mflo %0, $ac3 \n" \
1180 " .word 0x00600812 \n" \
1181 " move %0, $1 \n" \
1182 " .set pop \n" \
1183 : "=r" (__treg)); \
1184 __treg; \
1185})
1186
1187#define mthi0(x) \
1188do { \
1189 __asm__ __volatile__( \
1190 " .set push \n" \
1191 " .set noat \n" \
1192 " move $1, %0 \n" \
1193 " # mthi $1, $ac0 \n" \
1194 " .word 0x00200011 \n" \
1195 " .set pop \n" \
1196 : \
1197 : "r" (x)); \
1198} while (0)
1199
1200#define mthi1(x) \
1201do { \
1202 __asm__ __volatile__( \
1203 " .set push \n" \
1204 " .set noat \n" \
1205 " move $1, %0 \n" \
1206 " # mthi $1, $ac1 \n" \
1207 " .word 0x00200811 \n" \
1208 " .set pop \n" \
1209 : \
1210 : "r" (x)); \
1211} while (0)
1212
1213#define mthi2(x) \
1214do { \
1215 __asm__ __volatile__( \
1216 " .set push \n" \
1217 " .set noat \n" \
1218 " move $1, %0 \n" \
1219 " # mthi $1, $ac2 \n" \
1220 " .word 0x00201011 \n" \
1221 " .set pop \n" \
1222 : \
1223 : "r" (x)); \
1224} while (0)
1225
1226#define mthi3(x) \
1227do { \
1228 __asm__ __volatile__( \
1229 " .set push \n" \
1230 " .set noat \n" \
1231 " move $1, %0 \n" \
1232 " # mthi $1, $ac3 \n" \
1233 " .word 0x00201811 \n" \
1234 " .set pop \n" \
1235 : \
1236 : "r" (x)); \
1237} while (0)
1238
1239#define mtlo0(x) \
1240do { \
1241 __asm__ __volatile__( \
1242 " .set push \n" \
1243 " .set noat \n" \
1244 " move $1, %0 \n" \
1245 " # mtlo $1, $ac0 \n" \
1246 " .word 0x00200013 \n" \
1247 " .set pop \n" \
1248 : \
1249 : "r" (x)); \
1250} while (0)
1251
1252#define mtlo1(x) \
1253do { \
1254 __asm__ __volatile__( \
1255 " .set push \n" \
1256 " .set noat \n" \
1257 " move $1, %0 \n" \
1258 " # mtlo $1, $ac1 \n" \
1259 " .word 0x00200813 \n" \
1260 " .set pop \n" \
1261 : \
1262 : "r" (x)); \
1263} while (0)
1264
1265#define mtlo2(x) \
1266do { \
1267 __asm__ __volatile__( \
1268 " .set push \n" \
1269 " .set noat \n" \
1270 " move $1, %0 \n" \
1271 " # mtlo $1, $ac2 \n" \
1272 " .word 0x00201013 \n" \
1273 " .set pop \n" \
1274 : \
1275 : "r" (x)); \
1276} while (0)
1277
1278#define mtlo3(x) \
1279do { \
1280 __asm__ __volatile__( \
1281 " .set push \n" \
1282 " .set noat \n" \
1283 " move $1, %0 \n" \
1284 " # mtlo $1, $ac3 \n" \
1285 " .word 0x00201813 \n" \
1286 " .set pop \n" \
1287 : \
1288 : "r" (x)); \
1289} while (0)
1290
1291#endif
1292
1293/*
1294 * TLB operations.
1295 *
1296 * It is responsibility of the caller to take care of any TLB hazards.
1297 */
1298static inline void tlb_probe(void)
1299{
1300 __asm__ __volatile__(
1301 ".set noreorder\n\t"
1302 "tlbp\n\t"
1303 ".set reorder");
1304}
1305
1306static inline void tlb_read(void)
1307{
1308#if MIPS34K_MISSED_ITLB_WAR
1309 int res = 0;
1310
1311 __asm__ __volatile__(
1312 " .set push \n"
1313 " .set noreorder \n"
1314 " .set noat \n"
1315 " .set mips32r2 \n"
1316 " .word 0x41610001 # dvpe $1 \n"
1317 " move %0, $1 \n"
1318 " ehb \n"
1319 " .set pop \n"
1320 : "=r" (res));
1321
1322 instruction_hazard();
1323#endif
1324
1325 __asm__ __volatile__(
1326 ".set noreorder\n\t"
1327 "tlbr\n\t"
1328 ".set reorder");
1329
1330#if MIPS34K_MISSED_ITLB_WAR
1331 if ((res & _ULCAST_(1)))
1332 __asm__ __volatile__(
1333 " .set push \n"
1334 " .set noreorder \n"
1335 " .set noat \n"
1336 " .set mips32r2 \n"
1337 " .word 0x41600021 # evpe \n"
1338 " ehb \n"
1339 " .set pop \n");
1340#endif
1341}
1342
1343static inline void tlb_write_indexed(void)
1344{
1345 __asm__ __volatile__(
1346 ".set noreorder\n\t"
1347 "tlbwi\n\t"
1348 ".set reorder");
1349}
1350
1351static inline void tlb_write_random(void)
1352{
1353 __asm__ __volatile__(
1354 ".set noreorder\n\t"
1355 "tlbwr\n\t"
1356 ".set reorder");
1357}
1358
1359/*
1360 * Manipulate bits in a c0 register.
1361 */
1362#ifndef CONFIG_MIPS_MT_SMTC
1363/*
1364 * SMTC Linux requires shutting-down microthread scheduling
1365 * during CP0 register read-modify-write sequences.
1366 */
1367#define __BUILD_SET_C0(name) \
1368static inline unsigned int \
1369set_c0_##name(unsigned int set) \
1370{ \
1371 unsigned int res; \
1372 \
1373 res = read_c0_##name(); \
1374 res |= set; \
1375 write_c0_##name(res); \
1376 \
1377 return res; \
1378} \
1379 \
1380static inline unsigned int \
1381clear_c0_##name(unsigned int clear) \
1382{ \
1383 unsigned int res; \
1384 \
1385 res = read_c0_##name(); \
1386 res &= ~clear; \
1387 write_c0_##name(res); \
1388 \
1389 return res; \
1390} \
1391 \
1392static inline unsigned int \
1393change_c0_##name(unsigned int change, unsigned int new) \
1394{ \
1395 unsigned int res; \
1396 \
1397 res = read_c0_##name(); \
1398 res &= ~change; \
1399 res |= (new & change); \
1400 write_c0_##name(res); \
1401 \
1402 return res; \
1403}
1404
1405#else /* SMTC versions that manage MT scheduling */
1406
1407#include <linux/irqflags.h>
1408
1409/*
1410 * This is a duplicate of dmt() in mipsmtregs.h to avoid problems with
1411 * header file recursion.
1412 */
1413static inline unsigned int __dmt(void)
1414{
1415 int res;
1416
1417 __asm__ __volatile__(
1418 " .set push \n"
1419 " .set mips32r2 \n"
1420 " .set noat \n"
1421 " .word 0x41610BC1 # dmt $1 \n"
1422 " ehb \n"
1423 " move %0, $1 \n"
1424 " .set pop \n"
1425 : "=r" (res));
1426
1427 instruction_hazard();
1428
1429 return res;
1430}
1431
1432#define __VPECONTROL_TE_SHIFT 15
1433#define __VPECONTROL_TE (1UL << __VPECONTROL_TE_SHIFT)
1434
1435#define __EMT_ENABLE __VPECONTROL_TE
1436
1437static inline void __emt(unsigned int previous)
1438{
1439 if ((previous & __EMT_ENABLE))
1440 __asm__ __volatile__(
1441 " .set mips32r2 \n"
1442 " .word 0x41600be1 # emt \n"
1443 " ehb \n"
1444 " .set mips0 \n");
1445}
1446
1447static inline void __ehb(void)
1448{
1449 __asm__ __volatile__(
1450 " .set mips32r2 \n"
1451 " ehb \n" " .set mips0 \n");
1452}
1453
1454/*
1455 * Note that local_irq_save/restore affect TC-specific IXMT state,
1456 * not Status.IE as in non-SMTC kernel.
1457 */
1458
1459#define __BUILD_SET_C0(name) \
1460static inline unsigned int \
1461set_c0_##name(unsigned int set) \
1462{ \
1463 unsigned int res; \
1464 unsigned int omt; \
1465 unsigned long flags; \
1466 \
1467 local_irq_save(flags); \
1468 omt = __dmt(); \
1469 res = read_c0_##name(); \
1470 res |= set; \
1471 write_c0_##name(res); \
1472 __emt(omt); \
1473 local_irq_restore(flags); \
1474 \
1475 return res; \
1476} \
1477 \
1478static inline unsigned int \
1479clear_c0_##name(unsigned int clear) \
1480{ \
1481 unsigned int res; \
1482 unsigned int omt; \
1483 unsigned long flags; \
1484 \
1485 local_irq_save(flags); \
1486 omt = __dmt(); \
1487 res = read_c0_##name(); \
1488 res &= ~clear; \
1489 write_c0_##name(res); \
1490 __emt(omt); \
1491 local_irq_restore(flags); \
1492 \
1493 return res; \
1494} \
1495 \
1496static inline unsigned int \
1497change_c0_##name(unsigned int change, unsigned int new) \
1498{ \
1499 unsigned int res; \
1500 unsigned int omt; \
1501 unsigned long flags; \
1502 \
1503 local_irq_save(flags); \
1504 \
1505 omt = __dmt(); \
1506 res = read_c0_##name(); \
1507 res &= ~change; \
1508 res |= (new & change); \
1509 write_c0_##name(res); \
1510 __emt(omt); \
1511 local_irq_restore(flags); \
1512 \
1513 return res; \
1514}
1515#endif
1516
1517__BUILD_SET_C0(status)
1518__BUILD_SET_C0(cause)
1519__BUILD_SET_C0(config)
1520__BUILD_SET_C0(intcontrol)
1521__BUILD_SET_C0(intctl)
1522__BUILD_SET_C0(srsmap)
1523
1524#endif /* !__ASSEMBLY__ */
1525
1526#endif /* _ASM_MIPSREGS_H */
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-23 13:04:37 -0500