xref: /openbmc/linux/arch/mips/include/asm/mipsregs.h (revision b34e08d5)
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 <linux/types.h>
18 #include <asm/hazards.h>
19 #include <asm/war.h>
20 
21 /*
22  * The following macros are especially useful for __asm__
23  * inline assembler.
24  */
25 #ifndef __STR
26 #define __STR(x) #x
27 #endif
28 #ifndef STR
29 #define STR(x) __STR(x)
30 #endif
31 
32 /*
33  *  Configure language
34  */
35 #ifdef __ASSEMBLY__
36 #define _ULCAST_
37 #else
38 #define _ULCAST_ (unsigned long)
39 #endif
40 
41 /*
42  * Coprocessor 0 register names
43  */
44 #define CP0_INDEX $0
45 #define CP0_RANDOM $1
46 #define CP0_ENTRYLO0 $2
47 #define CP0_ENTRYLO1 $3
48 #define CP0_CONF $3
49 #define CP0_CONTEXT $4
50 #define CP0_PAGEMASK $5
51 #define CP0_WIRED $6
52 #define CP0_INFO $7
53 #define CP0_BADVADDR $8
54 #define CP0_COUNT $9
55 #define CP0_ENTRYHI $10
56 #define CP0_COMPARE $11
57 #define CP0_STATUS $12
58 #define CP0_CAUSE $13
59 #define CP0_EPC $14
60 #define CP0_PRID $15
61 #define CP0_CONFIG $16
62 #define CP0_LLADDR $17
63 #define CP0_WATCHLO $18
64 #define CP0_WATCHHI $19
65 #define CP0_XCONTEXT $20
66 #define CP0_FRAMEMASK $21
67 #define CP0_DIAGNOSTIC $22
68 #define CP0_DEBUG $23
69 #define CP0_DEPC $24
70 #define CP0_PERFORMANCE $25
71 #define CP0_ECC $26
72 #define CP0_CACHEERR $27
73 #define CP0_TAGLO $28
74 #define CP0_TAGHI $29
75 #define CP0_ERROREPC $30
76 #define CP0_DESAVE $31
77 
78 /*
79  * R4640/R4650 cp0 register names.  These registers are listed
80  * here only for completeness; without MMU these CPUs are not useable
81  * by Linux.  A future ELKS port might take make Linux run on them
82  * though ...
83  */
84 #define CP0_IBASE $0
85 #define CP0_IBOUND $1
86 #define CP0_DBASE $2
87 #define CP0_DBOUND $3
88 #define CP0_CALG $17
89 #define CP0_IWATCH $18
90 #define CP0_DWATCH $19
91 
92 /*
93  * Coprocessor 0 Set 1 register names
94  */
95 #define CP0_S1_DERRADDR0  $26
96 #define CP0_S1_DERRADDR1  $27
97 #define CP0_S1_INTCONTROL $20
98 
99 /*
100  * Coprocessor 0 Set 2 register names
101  */
102 #define CP0_S2_SRSCTL	  $12	/* MIPSR2 */
103 
104 /*
105  * Coprocessor 0 Set 3 register names
106  */
107 #define CP0_S3_SRSMAP	  $12	/* MIPSR2 */
108 
109 /*
110  *  TX39 Series
111  */
112 #define CP0_TX39_CACHE	$7
113 
114 /*
115  * Coprocessor 1 (FPU) register names
116  */
117 #define CP1_REVISION   $0
118 #define CP1_STATUS     $31
119 
120 /*
121  * FPU Status Register Values
122  */
123 /*
124  * Status Register Values
125  */
126 
127 #define FPU_CSR_FLUSH	0x01000000	/* flush denormalised results to 0 */
128 #define FPU_CSR_COND	0x00800000	/* $fcc0 */
129 #define FPU_CSR_COND0	0x00800000	/* $fcc0 */
130 #define FPU_CSR_COND1	0x02000000	/* $fcc1 */
131 #define FPU_CSR_COND2	0x04000000	/* $fcc2 */
132 #define FPU_CSR_COND3	0x08000000	/* $fcc3 */
133 #define FPU_CSR_COND4	0x10000000	/* $fcc4 */
134 #define FPU_CSR_COND5	0x20000000	/* $fcc5 */
135 #define FPU_CSR_COND6	0x40000000	/* $fcc6 */
136 #define FPU_CSR_COND7	0x80000000	/* $fcc7 */
137 
138 /*
139  * Bits 18 - 20 of the FPU Status Register will be read as 0,
140  * and should be written as zero.
141  */
142 #define FPU_CSR_RSVD	0x001c0000
143 
144 /*
145  * X the exception cause indicator
146  * E the exception enable
147  * S the sticky/flag bit
148 */
149 #define FPU_CSR_ALL_X	0x0003f000
150 #define FPU_CSR_UNI_X	0x00020000
151 #define FPU_CSR_INV_X	0x00010000
152 #define FPU_CSR_DIV_X	0x00008000
153 #define FPU_CSR_OVF_X	0x00004000
154 #define FPU_CSR_UDF_X	0x00002000
155 #define FPU_CSR_INE_X	0x00001000
156 
157 #define FPU_CSR_ALL_E	0x00000f80
158 #define FPU_CSR_INV_E	0x00000800
159 #define FPU_CSR_DIV_E	0x00000400
160 #define FPU_CSR_OVF_E	0x00000200
161 #define FPU_CSR_UDF_E	0x00000100
162 #define FPU_CSR_INE_E	0x00000080
163 
164 #define FPU_CSR_ALL_S	0x0000007c
165 #define FPU_CSR_INV_S	0x00000040
166 #define FPU_CSR_DIV_S	0x00000020
167 #define FPU_CSR_OVF_S	0x00000010
168 #define FPU_CSR_UDF_S	0x00000008
169 #define FPU_CSR_INE_S	0x00000004
170 
171 /* Bits 0 and 1 of FPU Status Register specify the rounding mode */
172 #define FPU_CSR_RM	0x00000003
173 #define FPU_CSR_RN	0x0	/* nearest */
174 #define FPU_CSR_RZ	0x1	/* towards zero */
175 #define FPU_CSR_RU	0x2	/* towards +Infinity */
176 #define FPU_CSR_RD	0x3	/* towards -Infinity */
177 
178 
179 /*
180  * Values for PageMask register
181  */
182 #ifdef CONFIG_CPU_VR41XX
183 
184 /* Why doesn't stupidity hurt ... */
185 
186 #define PM_1K		0x00000000
187 #define PM_4K		0x00001800
188 #define PM_16K		0x00007800
189 #define PM_64K		0x0001f800
190 #define PM_256K		0x0007f800
191 
192 #else
193 
194 #define PM_4K		0x00000000
195 #define PM_8K		0x00002000
196 #define PM_16K		0x00006000
197 #define PM_32K		0x0000e000
198 #define PM_64K		0x0001e000
199 #define PM_128K		0x0003e000
200 #define PM_256K		0x0007e000
201 #define PM_512K		0x000fe000
202 #define PM_1M		0x001fe000
203 #define PM_2M		0x003fe000
204 #define PM_4M		0x007fe000
205 #define PM_8M		0x00ffe000
206 #define PM_16M		0x01ffe000
207 #define PM_32M		0x03ffe000
208 #define PM_64M		0x07ffe000
209 #define PM_256M		0x1fffe000
210 #define PM_1G		0x7fffe000
211 
212 #endif
213 
214 /*
215  * Default page size for a given kernel configuration
216  */
217 #ifdef CONFIG_PAGE_SIZE_4KB
218 #define PM_DEFAULT_MASK PM_4K
219 #elif defined(CONFIG_PAGE_SIZE_8KB)
220 #define PM_DEFAULT_MASK PM_8K
221 #elif defined(CONFIG_PAGE_SIZE_16KB)
222 #define PM_DEFAULT_MASK PM_16K
223 #elif defined(CONFIG_PAGE_SIZE_32KB)
224 #define PM_DEFAULT_MASK PM_32K
225 #elif defined(CONFIG_PAGE_SIZE_64KB)
226 #define PM_DEFAULT_MASK PM_64K
227 #else
228 #error Bad page size configuration!
229 #endif
230 
231 /*
232  * Default huge tlb size for a given kernel configuration
233  */
234 #ifdef CONFIG_PAGE_SIZE_4KB
235 #define PM_HUGE_MASK	PM_1M
236 #elif defined(CONFIG_PAGE_SIZE_8KB)
237 #define PM_HUGE_MASK	PM_4M
238 #elif defined(CONFIG_PAGE_SIZE_16KB)
239 #define PM_HUGE_MASK	PM_16M
240 #elif defined(CONFIG_PAGE_SIZE_32KB)
241 #define PM_HUGE_MASK	PM_64M
242 #elif defined(CONFIG_PAGE_SIZE_64KB)
243 #define PM_HUGE_MASK	PM_256M
244 #elif defined(CONFIG_MIPS_HUGE_TLB_SUPPORT)
245 #error Bad page size configuration for hugetlbfs!
246 #endif
247 
248 /*
249  * Values used for computation of new tlb entries
250  */
251 #define PL_4K		12
252 #define PL_16K		14
253 #define PL_64K		16
254 #define PL_256K		18
255 #define PL_1M		20
256 #define PL_4M		22
257 #define PL_16M		24
258 #define PL_64M		26
259 #define PL_256M		28
260 
261 /*
262  * PageGrain bits
263  */
264 #define PG_RIE		(_ULCAST_(1) <<	 31)
265 #define PG_XIE		(_ULCAST_(1) <<	 30)
266 #define PG_ELPA		(_ULCAST_(1) <<	 29)
267 #define PG_ESP		(_ULCAST_(1) <<	 28)
268 
269 /*
270  * R4x00 interrupt enable / cause bits
271  */
272 #define IE_SW0		(_ULCAST_(1) <<	 8)
273 #define IE_SW1		(_ULCAST_(1) <<	 9)
274 #define IE_IRQ0		(_ULCAST_(1) << 10)
275 #define IE_IRQ1		(_ULCAST_(1) << 11)
276 #define IE_IRQ2		(_ULCAST_(1) << 12)
277 #define IE_IRQ3		(_ULCAST_(1) << 13)
278 #define IE_IRQ4		(_ULCAST_(1) << 14)
279 #define IE_IRQ5		(_ULCAST_(1) << 15)
280 
281 /*
282  * R4x00 interrupt cause bits
283  */
284 #define C_SW0		(_ULCAST_(1) <<	 8)
285 #define C_SW1		(_ULCAST_(1) <<	 9)
286 #define C_IRQ0		(_ULCAST_(1) << 10)
287 #define C_IRQ1		(_ULCAST_(1) << 11)
288 #define C_IRQ2		(_ULCAST_(1) << 12)
289 #define C_IRQ3		(_ULCAST_(1) << 13)
290 #define C_IRQ4		(_ULCAST_(1) << 14)
291 #define C_IRQ5		(_ULCAST_(1) << 15)
292 
293 /*
294  * Bitfields in the R4xx0 cp0 status register
295  */
296 #define ST0_IE			0x00000001
297 #define ST0_EXL			0x00000002
298 #define ST0_ERL			0x00000004
299 #define ST0_KSU			0x00000018
300 #  define KSU_USER		0x00000010
301 #  define KSU_SUPERVISOR	0x00000008
302 #  define KSU_KERNEL		0x00000000
303 #define ST0_UX			0x00000020
304 #define ST0_SX			0x00000040
305 #define ST0_KX			0x00000080
306 #define ST0_DE			0x00010000
307 #define ST0_CE			0x00020000
308 
309 /*
310  * Setting c0_status.co enables Hit_Writeback and Hit_Writeback_Invalidate
311  * cacheops in userspace.  This bit exists only on RM7000 and RM9000
312  * processors.
313  */
314 #define ST0_CO			0x08000000
315 
316 /*
317  * Bitfields in the R[23]000 cp0 status register.
318  */
319 #define ST0_IEC			0x00000001
320 #define ST0_KUC			0x00000002
321 #define ST0_IEP			0x00000004
322 #define ST0_KUP			0x00000008
323 #define ST0_IEO			0x00000010
324 #define ST0_KUO			0x00000020
325 /* bits 6 & 7 are reserved on R[23]000 */
326 #define ST0_ISC			0x00010000
327 #define ST0_SWC			0x00020000
328 #define ST0_CM			0x00080000
329 
330 /*
331  * Bits specific to the R4640/R4650
332  */
333 #define ST0_UM			(_ULCAST_(1) <<	 4)
334 #define ST0_IL			(_ULCAST_(1) << 23)
335 #define ST0_DL			(_ULCAST_(1) << 24)
336 
337 /*
338  * Enable the MIPS MDMX and DSP ASEs
339  */
340 #define ST0_MX			0x01000000
341 
342 /*
343  * Bitfields in the TX39 family CP0 Configuration Register 3
344  */
345 #define TX39_CONF_ICS_SHIFT	19
346 #define TX39_CONF_ICS_MASK	0x00380000
347 #define TX39_CONF_ICS_1KB	0x00000000
348 #define TX39_CONF_ICS_2KB	0x00080000
349 #define TX39_CONF_ICS_4KB	0x00100000
350 #define TX39_CONF_ICS_8KB	0x00180000
351 #define TX39_CONF_ICS_16KB	0x00200000
352 
353 #define TX39_CONF_DCS_SHIFT	16
354 #define TX39_CONF_DCS_MASK	0x00070000
355 #define TX39_CONF_DCS_1KB	0x00000000
356 #define TX39_CONF_DCS_2KB	0x00010000
357 #define TX39_CONF_DCS_4KB	0x00020000
358 #define TX39_CONF_DCS_8KB	0x00030000
359 #define TX39_CONF_DCS_16KB	0x00040000
360 
361 #define TX39_CONF_CWFON		0x00004000
362 #define TX39_CONF_WBON		0x00002000
363 #define TX39_CONF_RF_SHIFT	10
364 #define TX39_CONF_RF_MASK	0x00000c00
365 #define TX39_CONF_DOZE		0x00000200
366 #define TX39_CONF_HALT		0x00000100
367 #define TX39_CONF_LOCK		0x00000080
368 #define TX39_CONF_ICE		0x00000020
369 #define TX39_CONF_DCE		0x00000010
370 #define TX39_CONF_IRSIZE_SHIFT	2
371 #define TX39_CONF_IRSIZE_MASK	0x0000000c
372 #define TX39_CONF_DRSIZE_SHIFT	0
373 #define TX39_CONF_DRSIZE_MASK	0x00000003
374 
375 /*
376  * Status register bits available in all MIPS CPUs.
377  */
378 #define ST0_IM			0x0000ff00
379 #define	 STATUSB_IP0		8
380 #define	 STATUSF_IP0		(_ULCAST_(1) <<	 8)
381 #define	 STATUSB_IP1		9
382 #define	 STATUSF_IP1		(_ULCAST_(1) <<	 9)
383 #define	 STATUSB_IP2		10
384 #define	 STATUSF_IP2		(_ULCAST_(1) << 10)
385 #define	 STATUSB_IP3		11
386 #define	 STATUSF_IP3		(_ULCAST_(1) << 11)
387 #define	 STATUSB_IP4		12
388 #define	 STATUSF_IP4		(_ULCAST_(1) << 12)
389 #define	 STATUSB_IP5		13
390 #define	 STATUSF_IP5		(_ULCAST_(1) << 13)
391 #define	 STATUSB_IP6		14
392 #define	 STATUSF_IP6		(_ULCAST_(1) << 14)
393 #define	 STATUSB_IP7		15
394 #define	 STATUSF_IP7		(_ULCAST_(1) << 15)
395 #define	 STATUSB_IP8		0
396 #define	 STATUSF_IP8		(_ULCAST_(1) <<	 0)
397 #define	 STATUSB_IP9		1
398 #define	 STATUSF_IP9		(_ULCAST_(1) <<	 1)
399 #define	 STATUSB_IP10		2
400 #define	 STATUSF_IP10		(_ULCAST_(1) <<	 2)
401 #define	 STATUSB_IP11		3
402 #define	 STATUSF_IP11		(_ULCAST_(1) <<	 3)
403 #define	 STATUSB_IP12		4
404 #define	 STATUSF_IP12		(_ULCAST_(1) <<	 4)
405 #define	 STATUSB_IP13		5
406 #define	 STATUSF_IP13		(_ULCAST_(1) <<	 5)
407 #define	 STATUSB_IP14		6
408 #define	 STATUSF_IP14		(_ULCAST_(1) <<	 6)
409 #define	 STATUSB_IP15		7
410 #define	 STATUSF_IP15		(_ULCAST_(1) <<	 7)
411 #define ST0_CH			0x00040000
412 #define ST0_NMI			0x00080000
413 #define ST0_SR			0x00100000
414 #define ST0_TS			0x00200000
415 #define ST0_BEV			0x00400000
416 #define ST0_RE			0x02000000
417 #define ST0_FR			0x04000000
418 #define ST0_CU			0xf0000000
419 #define ST0_CU0			0x10000000
420 #define ST0_CU1			0x20000000
421 #define ST0_CU2			0x40000000
422 #define ST0_CU3			0x80000000
423 #define ST0_XX			0x80000000	/* MIPS IV naming */
424 
425 /*
426  * Bitfields and bit numbers in the coprocessor 0 IntCtl register. (MIPSR2)
427  *
428  * Refer to your MIPS R4xx0 manual, chapter 5 for explanation.
429  */
430 #define INTCTLB_IPPCI		26
431 #define INTCTLF_IPPCI		(_ULCAST_(7) << INTCTLB_IPPCI)
432 #define INTCTLB_IPTI		29
433 #define INTCTLF_IPTI		(_ULCAST_(7) << INTCTLB_IPTI)
434 
435 /*
436  * Bitfields and bit numbers in the coprocessor 0 cause register.
437  *
438  * Refer to your MIPS R4xx0 manual, chapter 5 for explanation.
439  */
440 #define	 CAUSEB_EXCCODE		2
441 #define	 CAUSEF_EXCCODE		(_ULCAST_(31)  <<  2)
442 #define	 CAUSEB_IP		8
443 #define	 CAUSEF_IP		(_ULCAST_(255) <<  8)
444 #define	 CAUSEB_IP0		8
445 #define	 CAUSEF_IP0		(_ULCAST_(1)   <<  8)
446 #define	 CAUSEB_IP1		9
447 #define	 CAUSEF_IP1		(_ULCAST_(1)   <<  9)
448 #define	 CAUSEB_IP2		10
449 #define	 CAUSEF_IP2		(_ULCAST_(1)   << 10)
450 #define	 CAUSEB_IP3		11
451 #define	 CAUSEF_IP3		(_ULCAST_(1)   << 11)
452 #define	 CAUSEB_IP4		12
453 #define	 CAUSEF_IP4		(_ULCAST_(1)   << 12)
454 #define	 CAUSEB_IP5		13
455 #define	 CAUSEF_IP5		(_ULCAST_(1)   << 13)
456 #define	 CAUSEB_IP6		14
457 #define	 CAUSEF_IP6		(_ULCAST_(1)   << 14)
458 #define	 CAUSEB_IP7		15
459 #define	 CAUSEF_IP7		(_ULCAST_(1)   << 15)
460 #define	 CAUSEB_IV		23
461 #define	 CAUSEF_IV		(_ULCAST_(1)   << 23)
462 #define	 CAUSEB_PCI		26
463 #define	 CAUSEF_PCI		(_ULCAST_(1)   << 26)
464 #define	 CAUSEB_CE		28
465 #define	 CAUSEF_CE		(_ULCAST_(3)   << 28)
466 #define	 CAUSEB_TI		30
467 #define	 CAUSEF_TI		(_ULCAST_(1)   << 30)
468 #define	 CAUSEB_BD		31
469 #define	 CAUSEF_BD		(_ULCAST_(1)   << 31)
470 
471 /*
472  * Bits in the coprocessor 0 config register.
473  */
474 /* Generic bits.  */
475 #define CONF_CM_CACHABLE_NO_WA		0
476 #define CONF_CM_CACHABLE_WA		1
477 #define CONF_CM_UNCACHED		2
478 #define CONF_CM_CACHABLE_NONCOHERENT	3
479 #define CONF_CM_CACHABLE_CE		4
480 #define CONF_CM_CACHABLE_COW		5
481 #define CONF_CM_CACHABLE_CUW		6
482 #define CONF_CM_CACHABLE_ACCELERATED	7
483 #define CONF_CM_CMASK			7
484 #define CONF_BE			(_ULCAST_(1) << 15)
485 
486 /* Bits common to various processors.  */
487 #define CONF_CU			(_ULCAST_(1) <<	 3)
488 #define CONF_DB			(_ULCAST_(1) <<	 4)
489 #define CONF_IB			(_ULCAST_(1) <<	 5)
490 #define CONF_DC			(_ULCAST_(7) <<	 6)
491 #define CONF_IC			(_ULCAST_(7) <<	 9)
492 #define CONF_EB			(_ULCAST_(1) << 13)
493 #define CONF_EM			(_ULCAST_(1) << 14)
494 #define CONF_SM			(_ULCAST_(1) << 16)
495 #define CONF_SC			(_ULCAST_(1) << 17)
496 #define CONF_EW			(_ULCAST_(3) << 18)
497 #define CONF_EP			(_ULCAST_(15)<< 24)
498 #define CONF_EC			(_ULCAST_(7) << 28)
499 #define CONF_CM			(_ULCAST_(1) << 31)
500 
501 /* Bits specific to the R4xx0.	*/
502 #define R4K_CONF_SW		(_ULCAST_(1) << 20)
503 #define R4K_CONF_SS		(_ULCAST_(1) << 21)
504 #define R4K_CONF_SB		(_ULCAST_(3) << 22)
505 
506 /* Bits specific to the R5000.	*/
507 #define R5K_CONF_SE		(_ULCAST_(1) << 12)
508 #define R5K_CONF_SS		(_ULCAST_(3) << 20)
509 
510 /* Bits specific to the RM7000.	 */
511 #define RM7K_CONF_SE		(_ULCAST_(1) <<	 3)
512 #define RM7K_CONF_TE		(_ULCAST_(1) << 12)
513 #define RM7K_CONF_CLK		(_ULCAST_(1) << 16)
514 #define RM7K_CONF_TC		(_ULCAST_(1) << 17)
515 #define RM7K_CONF_SI		(_ULCAST_(3) << 20)
516 #define RM7K_CONF_SC		(_ULCAST_(1) << 31)
517 
518 /* Bits specific to the R10000.	 */
519 #define R10K_CONF_DN		(_ULCAST_(3) <<	 3)
520 #define R10K_CONF_CT		(_ULCAST_(1) <<	 5)
521 #define R10K_CONF_PE		(_ULCAST_(1) <<	 6)
522 #define R10K_CONF_PM		(_ULCAST_(3) <<	 7)
523 #define R10K_CONF_EC		(_ULCAST_(15)<<	 9)
524 #define R10K_CONF_SB		(_ULCAST_(1) << 13)
525 #define R10K_CONF_SK		(_ULCAST_(1) << 14)
526 #define R10K_CONF_SS		(_ULCAST_(7) << 16)
527 #define R10K_CONF_SC		(_ULCAST_(7) << 19)
528 #define R10K_CONF_DC		(_ULCAST_(7) << 26)
529 #define R10K_CONF_IC		(_ULCAST_(7) << 29)
530 
531 /* Bits specific to the VR41xx.	 */
532 #define VR41_CONF_CS		(_ULCAST_(1) << 12)
533 #define VR41_CONF_P4K		(_ULCAST_(1) << 13)
534 #define VR41_CONF_BP		(_ULCAST_(1) << 16)
535 #define VR41_CONF_M16		(_ULCAST_(1) << 20)
536 #define VR41_CONF_AD		(_ULCAST_(1) << 23)
537 
538 /* Bits specific to the R30xx.	*/
539 #define R30XX_CONF_FDM		(_ULCAST_(1) << 19)
540 #define R30XX_CONF_REV		(_ULCAST_(1) << 22)
541 #define R30XX_CONF_AC		(_ULCAST_(1) << 23)
542 #define R30XX_CONF_RF		(_ULCAST_(1) << 24)
543 #define R30XX_CONF_HALT		(_ULCAST_(1) << 25)
544 #define R30XX_CONF_FPINT	(_ULCAST_(7) << 26)
545 #define R30XX_CONF_DBR		(_ULCAST_(1) << 29)
546 #define R30XX_CONF_SB		(_ULCAST_(1) << 30)
547 #define R30XX_CONF_LOCK		(_ULCAST_(1) << 31)
548 
549 /* Bits specific to the TX49.  */
550 #define TX49_CONF_DC		(_ULCAST_(1) << 16)
551 #define TX49_CONF_IC		(_ULCAST_(1) << 17)  /* conflict with CONF_SC */
552 #define TX49_CONF_HALT		(_ULCAST_(1) << 18)
553 #define TX49_CONF_CWFON		(_ULCAST_(1) << 27)
554 
555 /* Bits specific to the MIPS32/64 PRA.	*/
556 #define MIPS_CONF_MT		(_ULCAST_(7) <<	 7)
557 #define MIPS_CONF_AR		(_ULCAST_(7) << 10)
558 #define MIPS_CONF_AT		(_ULCAST_(3) << 13)
559 #define MIPS_CONF_M		(_ULCAST_(1) << 31)
560 
561 /*
562  * Bits in the MIPS32/64 PRA coprocessor 0 config registers 1 and above.
563  */
564 #define MIPS_CONF1_FP		(_ULCAST_(1) <<	 0)
565 #define MIPS_CONF1_EP		(_ULCAST_(1) <<	 1)
566 #define MIPS_CONF1_CA		(_ULCAST_(1) <<	 2)
567 #define MIPS_CONF1_WR		(_ULCAST_(1) <<	 3)
568 #define MIPS_CONF1_PC		(_ULCAST_(1) <<	 4)
569 #define MIPS_CONF1_MD		(_ULCAST_(1) <<	 5)
570 #define MIPS_CONF1_C2		(_ULCAST_(1) <<	 6)
571 #define MIPS_CONF1_DA_SHF	7
572 #define MIPS_CONF1_DA_SZ	3
573 #define MIPS_CONF1_DA		(_ULCAST_(7) <<	 7)
574 #define MIPS_CONF1_DL_SHF	10
575 #define MIPS_CONF1_DL_SZ	3
576 #define MIPS_CONF1_DL		(_ULCAST_(7) << 10)
577 #define MIPS_CONF1_DS_SHF	13
578 #define MIPS_CONF1_DS_SZ	3
579 #define MIPS_CONF1_DS		(_ULCAST_(7) << 13)
580 #define MIPS_CONF1_IA_SHF	16
581 #define MIPS_CONF1_IA_SZ	3
582 #define MIPS_CONF1_IA		(_ULCAST_(7) << 16)
583 #define MIPS_CONF1_IL_SHF	19
584 #define MIPS_CONF1_IL_SZ	3
585 #define MIPS_CONF1_IL		(_ULCAST_(7) << 19)
586 #define MIPS_CONF1_IS_SHF	22
587 #define MIPS_CONF1_IS_SZ	3
588 #define MIPS_CONF1_IS		(_ULCAST_(7) << 22)
589 #define MIPS_CONF1_TLBS_SHIFT   (25)
590 #define MIPS_CONF1_TLBS_SIZE    (6)
591 #define MIPS_CONF1_TLBS         (_ULCAST_(63) << MIPS_CONF1_TLBS_SHIFT)
592 
593 #define MIPS_CONF2_SA		(_ULCAST_(15)<<	 0)
594 #define MIPS_CONF2_SL		(_ULCAST_(15)<<	 4)
595 #define MIPS_CONF2_SS		(_ULCAST_(15)<<	 8)
596 #define MIPS_CONF2_SU		(_ULCAST_(15)<< 12)
597 #define MIPS_CONF2_TA		(_ULCAST_(15)<< 16)
598 #define MIPS_CONF2_TL		(_ULCAST_(15)<< 20)
599 #define MIPS_CONF2_TS		(_ULCAST_(15)<< 24)
600 #define MIPS_CONF2_TU		(_ULCAST_(7) << 28)
601 
602 #define MIPS_CONF3_TL		(_ULCAST_(1) <<	 0)
603 #define MIPS_CONF3_SM		(_ULCAST_(1) <<	 1)
604 #define MIPS_CONF3_MT		(_ULCAST_(1) <<	 2)
605 #define MIPS_CONF3_CDMM		(_ULCAST_(1) <<	 3)
606 #define MIPS_CONF3_SP		(_ULCAST_(1) <<	 4)
607 #define MIPS_CONF3_VINT		(_ULCAST_(1) <<	 5)
608 #define MIPS_CONF3_VEIC		(_ULCAST_(1) <<	 6)
609 #define MIPS_CONF3_LPA		(_ULCAST_(1) <<	 7)
610 #define MIPS_CONF3_ITL		(_ULCAST_(1) <<	 8)
611 #define MIPS_CONF3_CTXTC	(_ULCAST_(1) <<	 9)
612 #define MIPS_CONF3_DSP		(_ULCAST_(1) << 10)
613 #define MIPS_CONF3_DSP2P	(_ULCAST_(1) << 11)
614 #define MIPS_CONF3_RXI		(_ULCAST_(1) << 12)
615 #define MIPS_CONF3_ULRI		(_ULCAST_(1) << 13)
616 #define MIPS_CONF3_ISA		(_ULCAST_(3) << 14)
617 #define MIPS_CONF3_ISA_OE	(_ULCAST_(1) << 16)
618 #define MIPS_CONF3_MCU		(_ULCAST_(1) << 17)
619 #define MIPS_CONF3_MMAR		(_ULCAST_(7) << 18)
620 #define MIPS_CONF3_IPLW		(_ULCAST_(3) << 21)
621 #define MIPS_CONF3_VZ		(_ULCAST_(1) << 23)
622 #define MIPS_CONF3_PW		(_ULCAST_(1) << 24)
623 #define MIPS_CONF3_SC		(_ULCAST_(1) << 25)
624 #define MIPS_CONF3_BI		(_ULCAST_(1) << 26)
625 #define MIPS_CONF3_BP		(_ULCAST_(1) << 27)
626 #define MIPS_CONF3_MSA		(_ULCAST_(1) << 28)
627 #define MIPS_CONF3_CMGCR	(_ULCAST_(1) << 29)
628 #define MIPS_CONF3_BPG		(_ULCAST_(1) << 30)
629 
630 #define MIPS_CONF4_MMUSIZEEXT_SHIFT	(0)
631 #define MIPS_CONF4_MMUSIZEEXT	(_ULCAST_(255) << 0)
632 #define MIPS_CONF4_FTLBSETS_SHIFT	(0)
633 #define MIPS_CONF4_FTLBSETS_SHIFT	(0)
634 #define MIPS_CONF4_FTLBSETS	(_ULCAST_(15) << MIPS_CONF4_FTLBSETS_SHIFT)
635 #define MIPS_CONF4_FTLBWAYS_SHIFT	(4)
636 #define MIPS_CONF4_FTLBWAYS	(_ULCAST_(15) << MIPS_CONF4_FTLBWAYS_SHIFT)
637 #define MIPS_CONF4_FTLBPAGESIZE_SHIFT	(8)
638 /* bits 10:8 in FTLB-only configurations */
639 #define MIPS_CONF4_FTLBPAGESIZE (_ULCAST_(7) << MIPS_CONF4_FTLBPAGESIZE_SHIFT)
640 /* bits 12:8 in VTLB-FTLB only configurations */
641 #define MIPS_CONF4_VFTLBPAGESIZE (_ULCAST_(31) << MIPS_CONF4_FTLBPAGESIZE_SHIFT)
642 #define MIPS_CONF4_MMUEXTDEF	(_ULCAST_(3) << 14)
643 #define MIPS_CONF4_MMUEXTDEF_MMUSIZEEXT (_ULCAST_(1) << 14)
644 #define MIPS_CONF4_MMUEXTDEF_FTLBSIZEEXT	(_ULCAST_(2) << 14)
645 #define MIPS_CONF4_MMUEXTDEF_VTLBSIZEEXT	(_ULCAST_(3) << 14)
646 #define MIPS_CONF4_KSCREXIST	(_ULCAST_(255) << 16)
647 #define MIPS_CONF4_VTLBSIZEEXT_SHIFT	(24)
648 #define MIPS_CONF4_VTLBSIZEEXT	(_ULCAST_(15) << MIPS_CONF4_VTLBSIZEEXT_SHIFT)
649 #define MIPS_CONF4_AE		(_ULCAST_(1) << 28)
650 #define MIPS_CONF4_IE		(_ULCAST_(3) << 29)
651 #define MIPS_CONF4_TLBINV	(_ULCAST_(2) << 29)
652 
653 #define MIPS_CONF5_NF		(_ULCAST_(1) << 0)
654 #define MIPS_CONF5_UFR		(_ULCAST_(1) << 2)
655 #define MIPS_CONF5_MSAEN	(_ULCAST_(1) << 27)
656 #define MIPS_CONF5_EVA		(_ULCAST_(1) << 28)
657 #define MIPS_CONF5_CV		(_ULCAST_(1) << 29)
658 #define MIPS_CONF5_K		(_ULCAST_(1) << 30)
659 
660 #define MIPS_CONF6_SYND		(_ULCAST_(1) << 13)
661 /* proAptiv FTLB on/off bit */
662 #define MIPS_CONF6_FTLBEN	(_ULCAST_(1) << 15)
663 
664 #define MIPS_CONF7_WII		(_ULCAST_(1) << 31)
665 
666 #define MIPS_CONF7_RPS		(_ULCAST_(1) << 2)
667 
668 #define MIPS_CONF7_IAR		(_ULCAST_(1) << 10)
669 #define MIPS_CONF7_AR		(_ULCAST_(1) << 16)
670 
671 /*  EntryHI bit definition */
672 #define MIPS_ENTRYHI_EHINV	(_ULCAST_(1) << 10)
673 
674 /* CMGCRBase bit definitions */
675 #define MIPS_CMGCRB_BASE	11
676 #define MIPS_CMGCRF_BASE	(~_ULCAST_((1 << MIPS_CMGCRB_BASE) - 1))
677 
678 /*
679  * Bits in the MIPS32/64 coprocessor 1 (FPU) revision register.
680  */
681 #define MIPS_FPIR_S		(_ULCAST_(1) << 16)
682 #define MIPS_FPIR_D		(_ULCAST_(1) << 17)
683 #define MIPS_FPIR_PS		(_ULCAST_(1) << 18)
684 #define MIPS_FPIR_3D		(_ULCAST_(1) << 19)
685 #define MIPS_FPIR_W		(_ULCAST_(1) << 20)
686 #define MIPS_FPIR_L		(_ULCAST_(1) << 21)
687 #define MIPS_FPIR_F64		(_ULCAST_(1) << 22)
688 
689 /*
690  * Bits in the MIPS32 Memory Segmentation registers.
691  */
692 #define MIPS_SEGCFG_PA_SHIFT	9
693 #define MIPS_SEGCFG_PA		(_ULCAST_(127) << MIPS_SEGCFG_PA_SHIFT)
694 #define MIPS_SEGCFG_AM_SHIFT	4
695 #define MIPS_SEGCFG_AM		(_ULCAST_(7) << MIPS_SEGCFG_AM_SHIFT)
696 #define MIPS_SEGCFG_EU_SHIFT	3
697 #define MIPS_SEGCFG_EU		(_ULCAST_(1) << MIPS_SEGCFG_EU_SHIFT)
698 #define MIPS_SEGCFG_C_SHIFT	0
699 #define MIPS_SEGCFG_C		(_ULCAST_(7) << MIPS_SEGCFG_C_SHIFT)
700 
701 #define MIPS_SEGCFG_UUSK	_ULCAST_(7)
702 #define MIPS_SEGCFG_USK		_ULCAST_(5)
703 #define MIPS_SEGCFG_MUSUK	_ULCAST_(4)
704 #define MIPS_SEGCFG_MUSK	_ULCAST_(3)
705 #define MIPS_SEGCFG_MSK		_ULCAST_(2)
706 #define MIPS_SEGCFG_MK		_ULCAST_(1)
707 #define MIPS_SEGCFG_UK		_ULCAST_(0)
708 
709 #ifndef __ASSEMBLY__
710 
711 /*
712  * Macros for handling the ISA mode bit for microMIPS.
713  */
714 #define get_isa16_mode(x)		((x) & 0x1)
715 #define msk_isa16_mode(x)		((x) & ~0x1)
716 #define set_isa16_mode(x)		do { (x) |= 0x1; } while(0)
717 
718 /*
719  * microMIPS instructions can be 16-bit or 32-bit in length. This
720  * returns a 1 if the instruction is 16-bit and a 0 if 32-bit.
721  */
722 static inline int mm_insn_16bit(u16 insn)
723 {
724 	u16 opcode = (insn >> 10) & 0x7;
725 
726 	return (opcode >= 1 && opcode <= 3) ? 1 : 0;
727 }
728 
729 /*
730  * TLB Invalidate Flush
731  */
732 static inline void tlbinvf(void)
733 {
734 	__asm__ __volatile__(
735 		".set push\n\t"
736 		".set noreorder\n\t"
737 		".word 0x42000004\n\t" /* tlbinvf */
738 		".set pop");
739 }
740 
741 
742 /*
743  * Functions to access the R10000 performance counters.	 These are basically
744  * mfc0 and mtc0 instructions from and to coprocessor register with a 5-bit
745  * performance counter number encoded into bits 1 ... 5 of the instruction.
746  * Only performance counters 0 to 1 actually exist, so for a non-R10000 aware
747  * disassembler these will look like an access to sel 0 or 1.
748  */
749 #define read_r10k_perf_cntr(counter)				\
750 ({								\
751 	unsigned int __res;					\
752 	__asm__ __volatile__(					\
753 	"mfpc\t%0, %1"						\
754 	: "=r" (__res)						\
755 	: "i" (counter));					\
756 								\
757 	__res;							\
758 })
759 
760 #define write_r10k_perf_cntr(counter,val)			\
761 do {								\
762 	__asm__ __volatile__(					\
763 	"mtpc\t%0, %1"						\
764 	:							\
765 	: "r" (val), "i" (counter));				\
766 } while (0)
767 
768 #define read_r10k_perf_event(counter)				\
769 ({								\
770 	unsigned int __res;					\
771 	__asm__ __volatile__(					\
772 	"mfps\t%0, %1"						\
773 	: "=r" (__res)						\
774 	: "i" (counter));					\
775 								\
776 	__res;							\
777 })
778 
779 #define write_r10k_perf_cntl(counter,val)			\
780 do {								\
781 	__asm__ __volatile__(					\
782 	"mtps\t%0, %1"						\
783 	:							\
784 	: "r" (val), "i" (counter));				\
785 } while (0)
786 
787 
788 /*
789  * Macros to access the system control coprocessor
790  */
791 
792 #define __read_32bit_c0_register(source, sel)				\
793 ({ int __res;								\
794 	if (sel == 0)							\
795 		__asm__ __volatile__(					\
796 			"mfc0\t%0, " #source "\n\t"			\
797 			: "=r" (__res));				\
798 	else								\
799 		__asm__ __volatile__(					\
800 			".set\tmips32\n\t"				\
801 			"mfc0\t%0, " #source ", " #sel "\n\t"		\
802 			".set\tmips0\n\t"				\
803 			: "=r" (__res));				\
804 	__res;								\
805 })
806 
807 #define __read_64bit_c0_register(source, sel)				\
808 ({ unsigned long long __res;						\
809 	if (sizeof(unsigned long) == 4)					\
810 		__res = __read_64bit_c0_split(source, sel);		\
811 	else if (sel == 0)						\
812 		__asm__ __volatile__(					\
813 			".set\tmips3\n\t"				\
814 			"dmfc0\t%0, " #source "\n\t"			\
815 			".set\tmips0"					\
816 			: "=r" (__res));				\
817 	else								\
818 		__asm__ __volatile__(					\
819 			".set\tmips64\n\t"				\
820 			"dmfc0\t%0, " #source ", " #sel "\n\t"		\
821 			".set\tmips0"					\
822 			: "=r" (__res));				\
823 	__res;								\
824 })
825 
826 #define __write_32bit_c0_register(register, sel, value)			\
827 do {									\
828 	if (sel == 0)							\
829 		__asm__ __volatile__(					\
830 			"mtc0\t%z0, " #register "\n\t"			\
831 			: : "Jr" ((unsigned int)(value)));		\
832 	else								\
833 		__asm__ __volatile__(					\
834 			".set\tmips32\n\t"				\
835 			"mtc0\t%z0, " #register ", " #sel "\n\t"	\
836 			".set\tmips0"					\
837 			: : "Jr" ((unsigned int)(value)));		\
838 } while (0)
839 
840 #define __write_64bit_c0_register(register, sel, value)			\
841 do {									\
842 	if (sizeof(unsigned long) == 4)					\
843 		__write_64bit_c0_split(register, sel, value);		\
844 	else if (sel == 0)						\
845 		__asm__ __volatile__(					\
846 			".set\tmips3\n\t"				\
847 			"dmtc0\t%z0, " #register "\n\t"			\
848 			".set\tmips0"					\
849 			: : "Jr" (value));				\
850 	else								\
851 		__asm__ __volatile__(					\
852 			".set\tmips64\n\t"				\
853 			"dmtc0\t%z0, " #register ", " #sel "\n\t"	\
854 			".set\tmips0"					\
855 			: : "Jr" (value));				\
856 } while (0)
857 
858 #define __read_ulong_c0_register(reg, sel)				\
859 	((sizeof(unsigned long) == 4) ?					\
860 	(unsigned long) __read_32bit_c0_register(reg, sel) :		\
861 	(unsigned long) __read_64bit_c0_register(reg, sel))
862 
863 #define __write_ulong_c0_register(reg, sel, val)			\
864 do {									\
865 	if (sizeof(unsigned long) == 4)					\
866 		__write_32bit_c0_register(reg, sel, val);		\
867 	else								\
868 		__write_64bit_c0_register(reg, sel, val);		\
869 } while (0)
870 
871 /*
872  * On RM7000/RM9000 these are uses to access cop0 set 1 registers
873  */
874 #define __read_32bit_c0_ctrl_register(source)				\
875 ({ int __res;								\
876 	__asm__ __volatile__(						\
877 		"cfc0\t%0, " #source "\n\t"				\
878 		: "=r" (__res));					\
879 	__res;								\
880 })
881 
882 #define __write_32bit_c0_ctrl_register(register, value)			\
883 do {									\
884 	__asm__ __volatile__(						\
885 		"ctc0\t%z0, " #register "\n\t"				\
886 		: : "Jr" ((unsigned int)(value)));			\
887 } while (0)
888 
889 /*
890  * These versions are only needed for systems with more than 38 bits of
891  * physical address space running the 32-bit kernel.  That's none atm :-)
892  */
893 #define __read_64bit_c0_split(source, sel)				\
894 ({									\
895 	unsigned long long __val;					\
896 	unsigned long __flags;						\
897 									\
898 	local_irq_save(__flags);					\
899 	if (sel == 0)							\
900 		__asm__ __volatile__(					\
901 			".set\tmips64\n\t"				\
902 			"dmfc0\t%M0, " #source "\n\t"			\
903 			"dsll\t%L0, %M0, 32\n\t"			\
904 			"dsra\t%M0, %M0, 32\n\t"			\
905 			"dsra\t%L0, %L0, 32\n\t"			\
906 			".set\tmips0"					\
907 			: "=r" (__val));				\
908 	else								\
909 		__asm__ __volatile__(					\
910 			".set\tmips64\n\t"				\
911 			"dmfc0\t%M0, " #source ", " #sel "\n\t"		\
912 			"dsll\t%L0, %M0, 32\n\t"			\
913 			"dsra\t%M0, %M0, 32\n\t"			\
914 			"dsra\t%L0, %L0, 32\n\t"			\
915 			".set\tmips0"					\
916 			: "=r" (__val));				\
917 	local_irq_restore(__flags);					\
918 									\
919 	__val;								\
920 })
921 
922 #define __write_64bit_c0_split(source, sel, val)			\
923 do {									\
924 	unsigned long __flags;						\
925 									\
926 	local_irq_save(__flags);					\
927 	if (sel == 0)							\
928 		__asm__ __volatile__(					\
929 			".set\tmips64\n\t"				\
930 			"dsll\t%L0, %L0, 32\n\t"			\
931 			"dsrl\t%L0, %L0, 32\n\t"			\
932 			"dsll\t%M0, %M0, 32\n\t"			\
933 			"or\t%L0, %L0, %M0\n\t"				\
934 			"dmtc0\t%L0, " #source "\n\t"			\
935 			".set\tmips0"					\
936 			: : "r" (val));					\
937 	else								\
938 		__asm__ __volatile__(					\
939 			".set\tmips64\n\t"				\
940 			"dsll\t%L0, %L0, 32\n\t"			\
941 			"dsrl\t%L0, %L0, 32\n\t"			\
942 			"dsll\t%M0, %M0, 32\n\t"			\
943 			"or\t%L0, %L0, %M0\n\t"				\
944 			"dmtc0\t%L0, " #source ", " #sel "\n\t"		\
945 			".set\tmips0"					\
946 			: : "r" (val));					\
947 	local_irq_restore(__flags);					\
948 } while (0)
949 
950 #define read_c0_index()		__read_32bit_c0_register($0, 0)
951 #define write_c0_index(val)	__write_32bit_c0_register($0, 0, val)
952 
953 #define read_c0_random()	__read_32bit_c0_register($1, 0)
954 #define write_c0_random(val)	__write_32bit_c0_register($1, 0, val)
955 
956 #define read_c0_entrylo0()	__read_ulong_c0_register($2, 0)
957 #define write_c0_entrylo0(val)	__write_ulong_c0_register($2, 0, val)
958 
959 #define read_c0_entrylo1()	__read_ulong_c0_register($3, 0)
960 #define write_c0_entrylo1(val)	__write_ulong_c0_register($3, 0, val)
961 
962 #define read_c0_conf()		__read_32bit_c0_register($3, 0)
963 #define write_c0_conf(val)	__write_32bit_c0_register($3, 0, val)
964 
965 #define read_c0_context()	__read_ulong_c0_register($4, 0)
966 #define write_c0_context(val)	__write_ulong_c0_register($4, 0, val)
967 
968 #define read_c0_userlocal()	__read_ulong_c0_register($4, 2)
969 #define write_c0_userlocal(val) __write_ulong_c0_register($4, 2, val)
970 
971 #define read_c0_pagemask()	__read_32bit_c0_register($5, 0)
972 #define write_c0_pagemask(val)	__write_32bit_c0_register($5, 0, val)
973 
974 #define read_c0_pagegrain()	__read_32bit_c0_register($5, 1)
975 #define write_c0_pagegrain(val) __write_32bit_c0_register($5, 1, val)
976 
977 #define read_c0_wired()		__read_32bit_c0_register($6, 0)
978 #define write_c0_wired(val)	__write_32bit_c0_register($6, 0, val)
979 
980 #define read_c0_info()		__read_32bit_c0_register($7, 0)
981 
982 #define read_c0_cache()		__read_32bit_c0_register($7, 0) /* TX39xx */
983 #define write_c0_cache(val)	__write_32bit_c0_register($7, 0, val)
984 
985 #define read_c0_badvaddr()	__read_ulong_c0_register($8, 0)
986 #define write_c0_badvaddr(val)	__write_ulong_c0_register($8, 0, val)
987 
988 #define read_c0_count()		__read_32bit_c0_register($9, 0)
989 #define write_c0_count(val)	__write_32bit_c0_register($9, 0, val)
990 
991 #define read_c0_count2()	__read_32bit_c0_register($9, 6) /* pnx8550 */
992 #define write_c0_count2(val)	__write_32bit_c0_register($9, 6, val)
993 
994 #define read_c0_count3()	__read_32bit_c0_register($9, 7) /* pnx8550 */
995 #define write_c0_count3(val)	__write_32bit_c0_register($9, 7, val)
996 
997 #define read_c0_entryhi()	__read_ulong_c0_register($10, 0)
998 #define write_c0_entryhi(val)	__write_ulong_c0_register($10, 0, val)
999 
1000 #define read_c0_compare()	__read_32bit_c0_register($11, 0)
1001 #define write_c0_compare(val)	__write_32bit_c0_register($11, 0, val)
1002 
1003 #define read_c0_compare2()	__read_32bit_c0_register($11, 6) /* pnx8550 */
1004 #define write_c0_compare2(val)	__write_32bit_c0_register($11, 6, val)
1005 
1006 #define read_c0_compare3()	__read_32bit_c0_register($11, 7) /* pnx8550 */
1007 #define write_c0_compare3(val)	__write_32bit_c0_register($11, 7, val)
1008 
1009 #define read_c0_status()	__read_32bit_c0_register($12, 0)
1010 #ifdef CONFIG_MIPS_MT_SMTC
1011 #define write_c0_status(val)						\
1012 do {									\
1013 	__write_32bit_c0_register($12, 0, val);				\
1014 	__ehb();							\
1015 } while (0)
1016 #else
1017 /*
1018  * Legacy non-SMTC code, which may be hazardous
1019  * but which might not support EHB
1020  */
1021 #define write_c0_status(val)	__write_32bit_c0_register($12, 0, val)
1022 #endif /* CONFIG_MIPS_MT_SMTC */
1023 
1024 #define read_c0_cause()		__read_32bit_c0_register($13, 0)
1025 #define write_c0_cause(val)	__write_32bit_c0_register($13, 0, val)
1026 
1027 #define read_c0_epc()		__read_ulong_c0_register($14, 0)
1028 #define write_c0_epc(val)	__write_ulong_c0_register($14, 0, val)
1029 
1030 #define read_c0_prid()		__read_32bit_c0_register($15, 0)
1031 
1032 #define read_c0_cmgcrbase()	__read_ulong_c0_register($15, 3)
1033 
1034 #define read_c0_config()	__read_32bit_c0_register($16, 0)
1035 #define read_c0_config1()	__read_32bit_c0_register($16, 1)
1036 #define read_c0_config2()	__read_32bit_c0_register($16, 2)
1037 #define read_c0_config3()	__read_32bit_c0_register($16, 3)
1038 #define read_c0_config4()	__read_32bit_c0_register($16, 4)
1039 #define read_c0_config5()	__read_32bit_c0_register($16, 5)
1040 #define read_c0_config6()	__read_32bit_c0_register($16, 6)
1041 #define read_c0_config7()	__read_32bit_c0_register($16, 7)
1042 #define write_c0_config(val)	__write_32bit_c0_register($16, 0, val)
1043 #define write_c0_config1(val)	__write_32bit_c0_register($16, 1, val)
1044 #define write_c0_config2(val)	__write_32bit_c0_register($16, 2, val)
1045 #define write_c0_config3(val)	__write_32bit_c0_register($16, 3, val)
1046 #define write_c0_config4(val)	__write_32bit_c0_register($16, 4, val)
1047 #define write_c0_config5(val)	__write_32bit_c0_register($16, 5, val)
1048 #define write_c0_config6(val)	__write_32bit_c0_register($16, 6, val)
1049 #define write_c0_config7(val)	__write_32bit_c0_register($16, 7, val)
1050 
1051 /*
1052  * The WatchLo register.  There may be up to 8 of them.
1053  */
1054 #define read_c0_watchlo0()	__read_ulong_c0_register($18, 0)
1055 #define read_c0_watchlo1()	__read_ulong_c0_register($18, 1)
1056 #define read_c0_watchlo2()	__read_ulong_c0_register($18, 2)
1057 #define read_c0_watchlo3()	__read_ulong_c0_register($18, 3)
1058 #define read_c0_watchlo4()	__read_ulong_c0_register($18, 4)
1059 #define read_c0_watchlo5()	__read_ulong_c0_register($18, 5)
1060 #define read_c0_watchlo6()	__read_ulong_c0_register($18, 6)
1061 #define read_c0_watchlo7()	__read_ulong_c0_register($18, 7)
1062 #define write_c0_watchlo0(val)	__write_ulong_c0_register($18, 0, val)
1063 #define write_c0_watchlo1(val)	__write_ulong_c0_register($18, 1, val)
1064 #define write_c0_watchlo2(val)	__write_ulong_c0_register($18, 2, val)
1065 #define write_c0_watchlo3(val)	__write_ulong_c0_register($18, 3, val)
1066 #define write_c0_watchlo4(val)	__write_ulong_c0_register($18, 4, val)
1067 #define write_c0_watchlo5(val)	__write_ulong_c0_register($18, 5, val)
1068 #define write_c0_watchlo6(val)	__write_ulong_c0_register($18, 6, val)
1069 #define write_c0_watchlo7(val)	__write_ulong_c0_register($18, 7, val)
1070 
1071 /*
1072  * The WatchHi register.  There may be up to 8 of them.
1073  */
1074 #define read_c0_watchhi0()	__read_32bit_c0_register($19, 0)
1075 #define read_c0_watchhi1()	__read_32bit_c0_register($19, 1)
1076 #define read_c0_watchhi2()	__read_32bit_c0_register($19, 2)
1077 #define read_c0_watchhi3()	__read_32bit_c0_register($19, 3)
1078 #define read_c0_watchhi4()	__read_32bit_c0_register($19, 4)
1079 #define read_c0_watchhi5()	__read_32bit_c0_register($19, 5)
1080 #define read_c0_watchhi6()	__read_32bit_c0_register($19, 6)
1081 #define read_c0_watchhi7()	__read_32bit_c0_register($19, 7)
1082 
1083 #define write_c0_watchhi0(val)	__write_32bit_c0_register($19, 0, val)
1084 #define write_c0_watchhi1(val)	__write_32bit_c0_register($19, 1, val)
1085 #define write_c0_watchhi2(val)	__write_32bit_c0_register($19, 2, val)
1086 #define write_c0_watchhi3(val)	__write_32bit_c0_register($19, 3, val)
1087 #define write_c0_watchhi4(val)	__write_32bit_c0_register($19, 4, val)
1088 #define write_c0_watchhi5(val)	__write_32bit_c0_register($19, 5, val)
1089 #define write_c0_watchhi6(val)	__write_32bit_c0_register($19, 6, val)
1090 #define write_c0_watchhi7(val)	__write_32bit_c0_register($19, 7, val)
1091 
1092 #define read_c0_xcontext()	__read_ulong_c0_register($20, 0)
1093 #define write_c0_xcontext(val)	__write_ulong_c0_register($20, 0, val)
1094 
1095 #define read_c0_intcontrol()	__read_32bit_c0_ctrl_register($20)
1096 #define write_c0_intcontrol(val) __write_32bit_c0_ctrl_register($20, val)
1097 
1098 #define read_c0_framemask()	__read_32bit_c0_register($21, 0)
1099 #define write_c0_framemask(val) __write_32bit_c0_register($21, 0, val)
1100 
1101 #define read_c0_diag()		__read_32bit_c0_register($22, 0)
1102 #define write_c0_diag(val)	__write_32bit_c0_register($22, 0, val)
1103 
1104 #define read_c0_diag1()		__read_32bit_c0_register($22, 1)
1105 #define write_c0_diag1(val)	__write_32bit_c0_register($22, 1, val)
1106 
1107 #define read_c0_diag2()		__read_32bit_c0_register($22, 2)
1108 #define write_c0_diag2(val)	__write_32bit_c0_register($22, 2, val)
1109 
1110 #define read_c0_diag3()		__read_32bit_c0_register($22, 3)
1111 #define write_c0_diag3(val)	__write_32bit_c0_register($22, 3, val)
1112 
1113 #define read_c0_diag4()		__read_32bit_c0_register($22, 4)
1114 #define write_c0_diag4(val)	__write_32bit_c0_register($22, 4, val)
1115 
1116 #define read_c0_diag5()		__read_32bit_c0_register($22, 5)
1117 #define write_c0_diag5(val)	__write_32bit_c0_register($22, 5, val)
1118 
1119 #define read_c0_debug()		__read_32bit_c0_register($23, 0)
1120 #define write_c0_debug(val)	__write_32bit_c0_register($23, 0, val)
1121 
1122 #define read_c0_depc()		__read_ulong_c0_register($24, 0)
1123 #define write_c0_depc(val)	__write_ulong_c0_register($24, 0, val)
1124 
1125 /*
1126  * MIPS32 / MIPS64 performance counters
1127  */
1128 #define read_c0_perfctrl0()	__read_32bit_c0_register($25, 0)
1129 #define write_c0_perfctrl0(val) __write_32bit_c0_register($25, 0, val)
1130 #define read_c0_perfcntr0()	__read_32bit_c0_register($25, 1)
1131 #define write_c0_perfcntr0(val) __write_32bit_c0_register($25, 1, val)
1132 #define read_c0_perfcntr0_64()	__read_64bit_c0_register($25, 1)
1133 #define write_c0_perfcntr0_64(val) __write_64bit_c0_register($25, 1, val)
1134 #define read_c0_perfctrl1()	__read_32bit_c0_register($25, 2)
1135 #define write_c0_perfctrl1(val) __write_32bit_c0_register($25, 2, val)
1136 #define read_c0_perfcntr1()	__read_32bit_c0_register($25, 3)
1137 #define write_c0_perfcntr1(val) __write_32bit_c0_register($25, 3, val)
1138 #define read_c0_perfcntr1_64()	__read_64bit_c0_register($25, 3)
1139 #define write_c0_perfcntr1_64(val) __write_64bit_c0_register($25, 3, val)
1140 #define read_c0_perfctrl2()	__read_32bit_c0_register($25, 4)
1141 #define write_c0_perfctrl2(val) __write_32bit_c0_register($25, 4, val)
1142 #define read_c0_perfcntr2()	__read_32bit_c0_register($25, 5)
1143 #define write_c0_perfcntr2(val) __write_32bit_c0_register($25, 5, val)
1144 #define read_c0_perfcntr2_64()	__read_64bit_c0_register($25, 5)
1145 #define write_c0_perfcntr2_64(val) __write_64bit_c0_register($25, 5, val)
1146 #define read_c0_perfctrl3()	__read_32bit_c0_register($25, 6)
1147 #define write_c0_perfctrl3(val) __write_32bit_c0_register($25, 6, val)
1148 #define read_c0_perfcntr3()	__read_32bit_c0_register($25, 7)
1149 #define write_c0_perfcntr3(val) __write_32bit_c0_register($25, 7, val)
1150 #define read_c0_perfcntr3_64()	__read_64bit_c0_register($25, 7)
1151 #define write_c0_perfcntr3_64(val) __write_64bit_c0_register($25, 7, val)
1152 
1153 #define read_c0_ecc()		__read_32bit_c0_register($26, 0)
1154 #define write_c0_ecc(val)	__write_32bit_c0_register($26, 0, val)
1155 
1156 #define read_c0_derraddr0()	__read_ulong_c0_register($26, 1)
1157 #define write_c0_derraddr0(val) __write_ulong_c0_register($26, 1, val)
1158 
1159 #define read_c0_cacheerr()	__read_32bit_c0_register($27, 0)
1160 
1161 #define read_c0_derraddr1()	__read_ulong_c0_register($27, 1)
1162 #define write_c0_derraddr1(val) __write_ulong_c0_register($27, 1, val)
1163 
1164 #define read_c0_taglo()		__read_32bit_c0_register($28, 0)
1165 #define write_c0_taglo(val)	__write_32bit_c0_register($28, 0, val)
1166 
1167 #define read_c0_dtaglo()	__read_32bit_c0_register($28, 2)
1168 #define write_c0_dtaglo(val)	__write_32bit_c0_register($28, 2, val)
1169 
1170 #define read_c0_ddatalo()	__read_32bit_c0_register($28, 3)
1171 #define write_c0_ddatalo(val)	__write_32bit_c0_register($28, 3, val)
1172 
1173 #define read_c0_staglo()	__read_32bit_c0_register($28, 4)
1174 #define write_c0_staglo(val)	__write_32bit_c0_register($28, 4, val)
1175 
1176 #define read_c0_taghi()		__read_32bit_c0_register($29, 0)
1177 #define write_c0_taghi(val)	__write_32bit_c0_register($29, 0, val)
1178 
1179 #define read_c0_errorepc()	__read_ulong_c0_register($30, 0)
1180 #define write_c0_errorepc(val)	__write_ulong_c0_register($30, 0, val)
1181 
1182 /* MIPSR2 */
1183 #define read_c0_hwrena()	__read_32bit_c0_register($7, 0)
1184 #define write_c0_hwrena(val)	__write_32bit_c0_register($7, 0, val)
1185 
1186 #define read_c0_intctl()	__read_32bit_c0_register($12, 1)
1187 #define write_c0_intctl(val)	__write_32bit_c0_register($12, 1, val)
1188 
1189 #define read_c0_srsctl()	__read_32bit_c0_register($12, 2)
1190 #define write_c0_srsctl(val)	__write_32bit_c0_register($12, 2, val)
1191 
1192 #define read_c0_srsmap()	__read_32bit_c0_register($12, 3)
1193 #define write_c0_srsmap(val)	__write_32bit_c0_register($12, 3, val)
1194 
1195 #define read_c0_ebase()		__read_32bit_c0_register($15, 1)
1196 #define write_c0_ebase(val)	__write_32bit_c0_register($15, 1, val)
1197 
1198 /* MIPSR3 */
1199 #define read_c0_segctl0()	__read_32bit_c0_register($5, 2)
1200 #define write_c0_segctl0(val)	__write_32bit_c0_register($5, 2, val)
1201 
1202 #define read_c0_segctl1()	__read_32bit_c0_register($5, 3)
1203 #define write_c0_segctl1(val)	__write_32bit_c0_register($5, 3, val)
1204 
1205 #define read_c0_segctl2()	__read_32bit_c0_register($5, 4)
1206 #define write_c0_segctl2(val)	__write_32bit_c0_register($5, 4, val)
1207 
1208 /* Cavium OCTEON (cnMIPS) */
1209 #define read_c0_cvmcount()	__read_ulong_c0_register($9, 6)
1210 #define write_c0_cvmcount(val)	__write_ulong_c0_register($9, 6, val)
1211 
1212 #define read_c0_cvmctl()	__read_64bit_c0_register($9, 7)
1213 #define write_c0_cvmctl(val)	__write_64bit_c0_register($9, 7, val)
1214 
1215 #define read_c0_cvmmemctl()	__read_64bit_c0_register($11, 7)
1216 #define write_c0_cvmmemctl(val) __write_64bit_c0_register($11, 7, val)
1217 /*
1218  * The cacheerr registers are not standardized.	 On OCTEON, they are
1219  * 64 bits wide.
1220  */
1221 #define read_octeon_c0_icacheerr()	__read_64bit_c0_register($27, 0)
1222 #define write_octeon_c0_icacheerr(val)	__write_64bit_c0_register($27, 0, val)
1223 
1224 #define read_octeon_c0_dcacheerr()	__read_64bit_c0_register($27, 1)
1225 #define write_octeon_c0_dcacheerr(val)	__write_64bit_c0_register($27, 1, val)
1226 
1227 /* BMIPS3300 */
1228 #define read_c0_brcm_config_0()		__read_32bit_c0_register($22, 0)
1229 #define write_c0_brcm_config_0(val)	__write_32bit_c0_register($22, 0, val)
1230 
1231 #define read_c0_brcm_bus_pll()		__read_32bit_c0_register($22, 4)
1232 #define write_c0_brcm_bus_pll(val)	__write_32bit_c0_register($22, 4, val)
1233 
1234 #define read_c0_brcm_reset()		__read_32bit_c0_register($22, 5)
1235 #define write_c0_brcm_reset(val)	__write_32bit_c0_register($22, 5, val)
1236 
1237 /* BMIPS43xx */
1238 #define read_c0_brcm_cmt_intr()		__read_32bit_c0_register($22, 1)
1239 #define write_c0_brcm_cmt_intr(val)	__write_32bit_c0_register($22, 1, val)
1240 
1241 #define read_c0_brcm_cmt_ctrl()		__read_32bit_c0_register($22, 2)
1242 #define write_c0_brcm_cmt_ctrl(val)	__write_32bit_c0_register($22, 2, val)
1243 
1244 #define read_c0_brcm_cmt_local()	__read_32bit_c0_register($22, 3)
1245 #define write_c0_brcm_cmt_local(val)	__write_32bit_c0_register($22, 3, val)
1246 
1247 #define read_c0_brcm_config_1()		__read_32bit_c0_register($22, 5)
1248 #define write_c0_brcm_config_1(val)	__write_32bit_c0_register($22, 5, val)
1249 
1250 #define read_c0_brcm_cbr()		__read_32bit_c0_register($22, 6)
1251 #define write_c0_brcm_cbr(val)		__write_32bit_c0_register($22, 6, val)
1252 
1253 /* BMIPS5000 */
1254 #define read_c0_brcm_config()		__read_32bit_c0_register($22, 0)
1255 #define write_c0_brcm_config(val)	__write_32bit_c0_register($22, 0, val)
1256 
1257 #define read_c0_brcm_mode()		__read_32bit_c0_register($22, 1)
1258 #define write_c0_brcm_mode(val)		__write_32bit_c0_register($22, 1, val)
1259 
1260 #define read_c0_brcm_action()		__read_32bit_c0_register($22, 2)
1261 #define write_c0_brcm_action(val)	__write_32bit_c0_register($22, 2, val)
1262 
1263 #define read_c0_brcm_edsp()		__read_32bit_c0_register($22, 3)
1264 #define write_c0_brcm_edsp(val)		__write_32bit_c0_register($22, 3, val)
1265 
1266 #define read_c0_brcm_bootvec()		__read_32bit_c0_register($22, 4)
1267 #define write_c0_brcm_bootvec(val)	__write_32bit_c0_register($22, 4, val)
1268 
1269 #define read_c0_brcm_sleepcount()	__read_32bit_c0_register($22, 7)
1270 #define write_c0_brcm_sleepcount(val)	__write_32bit_c0_register($22, 7, val)
1271 
1272 /*
1273  * Macros to access the floating point coprocessor control registers
1274  */
1275 #define read_32bit_cp1_register(source)					\
1276 ({									\
1277 	int __res;							\
1278 									\
1279 	__asm__ __volatile__(						\
1280 	"	.set	push					\n"	\
1281 	"	.set	reorder					\n"	\
1282 	"	# gas fails to assemble cfc1 for some archs,	\n"	\
1283 	"	# like Octeon.					\n"	\
1284 	"	.set	mips1					\n"	\
1285 	"	cfc1	%0,"STR(source)"			\n"	\
1286 	"	.set	pop					\n"	\
1287 	: "=r" (__res));						\
1288 	__res;								\
1289 })
1290 
1291 #ifdef HAVE_AS_DSP
1292 #define rddsp(mask)							\
1293 ({									\
1294 	unsigned int __dspctl;						\
1295 									\
1296 	__asm__ __volatile__(						\
1297 	"	.set push					\n"	\
1298 	"	.set dsp					\n"	\
1299 	"	rddsp	%0, %x1					\n"	\
1300 	"	.set pop					\n"	\
1301 	: "=r" (__dspctl)						\
1302 	: "i" (mask));							\
1303 	__dspctl;							\
1304 })
1305 
1306 #define wrdsp(val, mask)						\
1307 do {									\
1308 	__asm__ __volatile__(						\
1309 	"	.set push					\n"	\
1310 	"	.set dsp					\n"	\
1311 	"	wrdsp	%0, %x1					\n"	\
1312 	"	.set pop					\n"	\
1313 	:								\
1314 	: "r" (val), "i" (mask));					\
1315 } while (0)
1316 
1317 #define mflo0()								\
1318 ({									\
1319 	long mflo0;							\
1320 	__asm__(							\
1321 	"	.set push					\n"	\
1322 	"	.set dsp					\n"	\
1323 	"	mflo %0, $ac0					\n"	\
1324 	"	.set pop					\n" 	\
1325 	: "=r" (mflo0)); 						\
1326 	mflo0;								\
1327 })
1328 
1329 #define mflo1()								\
1330 ({									\
1331 	long mflo1;							\
1332 	__asm__(							\
1333 	"	.set push					\n"	\
1334 	"	.set dsp					\n"	\
1335 	"	mflo %0, $ac1					\n"	\
1336 	"	.set pop					\n" 	\
1337 	: "=r" (mflo1)); 						\
1338 	mflo1;								\
1339 })
1340 
1341 #define mflo2()								\
1342 ({									\
1343 	long mflo2;							\
1344 	__asm__(							\
1345 	"	.set push					\n"	\
1346 	"	.set dsp					\n"	\
1347 	"	mflo %0, $ac2					\n"	\
1348 	"	.set pop					\n" 	\
1349 	: "=r" (mflo2)); 						\
1350 	mflo2;								\
1351 })
1352 
1353 #define mflo3()								\
1354 ({									\
1355 	long mflo3;							\
1356 	__asm__(							\
1357 	"	.set push					\n"	\
1358 	"	.set dsp					\n"	\
1359 	"	mflo %0, $ac3					\n"	\
1360 	"	.set pop					\n" 	\
1361 	: "=r" (mflo3)); 						\
1362 	mflo3;								\
1363 })
1364 
1365 #define mfhi0()								\
1366 ({									\
1367 	long mfhi0;							\
1368 	__asm__(							\
1369 	"	.set push					\n"	\
1370 	"	.set dsp					\n"	\
1371 	"	mfhi %0, $ac0					\n"	\
1372 	"	.set pop					\n" 	\
1373 	: "=r" (mfhi0)); 						\
1374 	mfhi0;								\
1375 })
1376 
1377 #define mfhi1()								\
1378 ({									\
1379 	long mfhi1;							\
1380 	__asm__(							\
1381 	"	.set push					\n"	\
1382 	"	.set dsp					\n"	\
1383 	"	mfhi %0, $ac1					\n"	\
1384 	"	.set pop					\n" 	\
1385 	: "=r" (mfhi1)); 						\
1386 	mfhi1;								\
1387 })
1388 
1389 #define mfhi2()								\
1390 ({									\
1391 	long mfhi2;							\
1392 	__asm__(							\
1393 	"	.set push					\n"	\
1394 	"	.set dsp					\n"	\
1395 	"	mfhi %0, $ac2					\n"	\
1396 	"	.set pop					\n" 	\
1397 	: "=r" (mfhi2)); 						\
1398 	mfhi2;								\
1399 })
1400 
1401 #define mfhi3()								\
1402 ({									\
1403 	long mfhi3;							\
1404 	__asm__(							\
1405 	"	.set push					\n"	\
1406 	"	.set dsp					\n"	\
1407 	"	mfhi %0, $ac3					\n"	\
1408 	"	.set pop					\n" 	\
1409 	: "=r" (mfhi3)); 						\
1410 	mfhi3;								\
1411 })
1412 
1413 
1414 #define mtlo0(x)							\
1415 ({									\
1416 	__asm__(							\
1417 	"	.set push					\n"	\
1418 	"	.set dsp					\n"	\
1419 	"	mtlo %0, $ac0					\n"	\
1420 	"	.set pop					\n"	\
1421 	:								\
1422 	: "r" (x));							\
1423 })
1424 
1425 #define mtlo1(x)							\
1426 ({									\
1427 	__asm__(							\
1428 	"	.set push					\n"	\
1429 	"	.set dsp					\n"	\
1430 	"	mtlo %0, $ac1					\n"	\
1431 	"	.set pop					\n"	\
1432 	:								\
1433 	: "r" (x));							\
1434 })
1435 
1436 #define mtlo2(x)							\
1437 ({									\
1438 	__asm__(							\
1439 	"	.set push					\n"	\
1440 	"	.set dsp					\n"	\
1441 	"	mtlo %0, $ac2					\n"	\
1442 	"	.set pop					\n"	\
1443 	:								\
1444 	: "r" (x));							\
1445 })
1446 
1447 #define mtlo3(x)							\
1448 ({									\
1449 	__asm__(							\
1450 	"	.set push					\n"	\
1451 	"	.set dsp					\n"	\
1452 	"	mtlo %0, $ac3					\n"	\
1453 	"	.set pop					\n"	\
1454 	:								\
1455 	: "r" (x));							\
1456 })
1457 
1458 #define mthi0(x)							\
1459 ({									\
1460 	__asm__(							\
1461 	"	.set push					\n"	\
1462 	"	.set dsp					\n"	\
1463 	"	mthi %0, $ac0					\n"	\
1464 	"	.set pop					\n"	\
1465 	:								\
1466 	: "r" (x));							\
1467 })
1468 
1469 #define mthi1(x)							\
1470 ({									\
1471 	__asm__(							\
1472 	"	.set push					\n"	\
1473 	"	.set dsp					\n"	\
1474 	"	mthi %0, $ac1					\n"	\
1475 	"	.set pop					\n"	\
1476 	:								\
1477 	: "r" (x));							\
1478 })
1479 
1480 #define mthi2(x)							\
1481 ({									\
1482 	__asm__(							\
1483 	"	.set push					\n"	\
1484 	"	.set dsp					\n"	\
1485 	"	mthi %0, $ac2					\n"	\
1486 	"	.set pop					\n"	\
1487 	:								\
1488 	: "r" (x));							\
1489 })
1490 
1491 #define mthi3(x)							\
1492 ({									\
1493 	__asm__(							\
1494 	"	.set push					\n"	\
1495 	"	.set dsp					\n"	\
1496 	"	mthi %0, $ac3					\n"	\
1497 	"	.set pop					\n"	\
1498 	:								\
1499 	: "r" (x));							\
1500 })
1501 
1502 #else
1503 
1504 #ifdef CONFIG_CPU_MICROMIPS
1505 #define rddsp(mask)							\
1506 ({									\
1507 	unsigned int __res;						\
1508 									\
1509 	__asm__ __volatile__(						\
1510 	"	.set	push					\n"	\
1511 	"	.set	noat					\n"	\
1512 	"	# rddsp $1, %x1					\n"	\
1513 	"	.hword	((0x0020067c | (%x1 << 14)) >> 16)	\n"	\
1514 	"	.hword	((0x0020067c | (%x1 << 14)) & 0xffff)	\n"	\
1515 	"	move	%0, $1					\n"	\
1516 	"	.set	pop					\n"	\
1517 	: "=r" (__res)							\
1518 	: "i" (mask));							\
1519 	__res;								\
1520 })
1521 
1522 #define wrdsp(val, mask)						\
1523 do {									\
1524 	__asm__ __volatile__(						\
1525 	"	.set	push					\n"	\
1526 	"	.set	noat					\n"	\
1527 	"	move	$1, %0					\n"	\
1528 	"	# wrdsp $1, %x1					\n"	\
1529 	"	.hword	((0x0020167c | (%x1 << 14)) >> 16)	\n"	\
1530 	"	.hword	((0x0020167c | (%x1 << 14)) & 0xffff)	\n"	\
1531 	"	.set	pop					\n"	\
1532 	:								\
1533 	: "r" (val), "i" (mask));					\
1534 } while (0)
1535 
1536 #define _umips_dsp_mfxxx(ins)						\
1537 ({									\
1538 	unsigned long __treg;						\
1539 									\
1540 	__asm__ __volatile__(						\
1541 	"	.set	push					\n"	\
1542 	"	.set	noat					\n"	\
1543 	"	.hword	0x0001					\n"	\
1544 	"	.hword	%x1					\n"	\
1545 	"	move	%0, $1					\n"	\
1546 	"	.set	pop					\n"	\
1547 	: "=r" (__treg)							\
1548 	: "i" (ins));							\
1549 	__treg;								\
1550 })
1551 
1552 #define _umips_dsp_mtxxx(val, ins)					\
1553 do {									\
1554 	__asm__ __volatile__(						\
1555 	"	.set	push					\n"	\
1556 	"	.set	noat					\n"	\
1557 	"	move	$1, %0					\n"	\
1558 	"	.hword	0x0001					\n"	\
1559 	"	.hword	%x1					\n"	\
1560 	"	.set	pop					\n"	\
1561 	:								\
1562 	: "r" (val), "i" (ins));					\
1563 } while (0)
1564 
1565 #define _umips_dsp_mflo(reg) _umips_dsp_mfxxx((reg << 14) | 0x107c)
1566 #define _umips_dsp_mfhi(reg) _umips_dsp_mfxxx((reg << 14) | 0x007c)
1567 
1568 #define _umips_dsp_mtlo(val, reg) _umips_dsp_mtxxx(val, ((reg << 14) | 0x307c))
1569 #define _umips_dsp_mthi(val, reg) _umips_dsp_mtxxx(val, ((reg << 14) | 0x207c))
1570 
1571 #define mflo0() _umips_dsp_mflo(0)
1572 #define mflo1() _umips_dsp_mflo(1)
1573 #define mflo2() _umips_dsp_mflo(2)
1574 #define mflo3() _umips_dsp_mflo(3)
1575 
1576 #define mfhi0() _umips_dsp_mfhi(0)
1577 #define mfhi1() _umips_dsp_mfhi(1)
1578 #define mfhi2() _umips_dsp_mfhi(2)
1579 #define mfhi3() _umips_dsp_mfhi(3)
1580 
1581 #define mtlo0(x) _umips_dsp_mtlo(x, 0)
1582 #define mtlo1(x) _umips_dsp_mtlo(x, 1)
1583 #define mtlo2(x) _umips_dsp_mtlo(x, 2)
1584 #define mtlo3(x) _umips_dsp_mtlo(x, 3)
1585 
1586 #define mthi0(x) _umips_dsp_mthi(x, 0)
1587 #define mthi1(x) _umips_dsp_mthi(x, 1)
1588 #define mthi2(x) _umips_dsp_mthi(x, 2)
1589 #define mthi3(x) _umips_dsp_mthi(x, 3)
1590 
1591 #else  /* !CONFIG_CPU_MICROMIPS */
1592 #define rddsp(mask)							\
1593 ({									\
1594 	unsigned int __res;						\
1595 									\
1596 	__asm__ __volatile__(						\
1597 	"	.set	push				\n"		\
1598 	"	.set	noat				\n"		\
1599 	"	# rddsp $1, %x1				\n"		\
1600 	"	.word	0x7c000cb8 | (%x1 << 16)	\n"		\
1601 	"	move	%0, $1				\n"		\
1602 	"	.set	pop				\n"		\
1603 	: "=r" (__res)							\
1604 	: "i" (mask));							\
1605 	__res;								\
1606 })
1607 
1608 #define wrdsp(val, mask)						\
1609 do {									\
1610 	__asm__ __volatile__(						\
1611 	"	.set	push					\n"	\
1612 	"	.set	noat					\n"	\
1613 	"	move	$1, %0					\n"	\
1614 	"	# wrdsp $1, %x1					\n"	\
1615 	"	.word	0x7c2004f8 | (%x1 << 11)		\n"	\
1616 	"	.set	pop					\n"	\
1617         :								\
1618 	: "r" (val), "i" (mask));					\
1619 } while (0)
1620 
1621 #define _dsp_mfxxx(ins)							\
1622 ({									\
1623 	unsigned long __treg;						\
1624 									\
1625 	__asm__ __volatile__(						\
1626 	"	.set	push					\n"	\
1627 	"	.set	noat					\n"	\
1628 	"	.word	(0x00000810 | %1)			\n"	\
1629 	"	move	%0, $1					\n"	\
1630 	"	.set	pop					\n"	\
1631 	: "=r" (__treg)							\
1632 	: "i" (ins));							\
1633 	__treg;								\
1634 })
1635 
1636 #define _dsp_mtxxx(val, ins)						\
1637 do {									\
1638 	__asm__ __volatile__(						\
1639 	"	.set	push					\n"	\
1640 	"	.set	noat					\n"	\
1641 	"	move	$1, %0					\n"	\
1642 	"	.word	(0x00200011 | %1)			\n"	\
1643 	"	.set	pop					\n"	\
1644 	:								\
1645 	: "r" (val), "i" (ins));					\
1646 } while (0)
1647 
1648 #define _dsp_mflo(reg) _dsp_mfxxx((reg << 21) | 0x0002)
1649 #define _dsp_mfhi(reg) _dsp_mfxxx((reg << 21) | 0x0000)
1650 
1651 #define _dsp_mtlo(val, reg) _dsp_mtxxx(val, ((reg << 11) | 0x0002))
1652 #define _dsp_mthi(val, reg) _dsp_mtxxx(val, ((reg << 11) | 0x0000))
1653 
1654 #define mflo0() _dsp_mflo(0)
1655 #define mflo1() _dsp_mflo(1)
1656 #define mflo2() _dsp_mflo(2)
1657 #define mflo3() _dsp_mflo(3)
1658 
1659 #define mfhi0() _dsp_mfhi(0)
1660 #define mfhi1() _dsp_mfhi(1)
1661 #define mfhi2() _dsp_mfhi(2)
1662 #define mfhi3() _dsp_mfhi(3)
1663 
1664 #define mtlo0(x) _dsp_mtlo(x, 0)
1665 #define mtlo1(x) _dsp_mtlo(x, 1)
1666 #define mtlo2(x) _dsp_mtlo(x, 2)
1667 #define mtlo3(x) _dsp_mtlo(x, 3)
1668 
1669 #define mthi0(x) _dsp_mthi(x, 0)
1670 #define mthi1(x) _dsp_mthi(x, 1)
1671 #define mthi2(x) _dsp_mthi(x, 2)
1672 #define mthi3(x) _dsp_mthi(x, 3)
1673 
1674 #endif /* CONFIG_CPU_MICROMIPS */
1675 #endif
1676 
1677 /*
1678  * TLB operations.
1679  *
1680  * It is responsibility of the caller to take care of any TLB hazards.
1681  */
1682 static inline void tlb_probe(void)
1683 {
1684 	__asm__ __volatile__(
1685 		".set noreorder\n\t"
1686 		"tlbp\n\t"
1687 		".set reorder");
1688 }
1689 
1690 static inline void tlb_read(void)
1691 {
1692 #if MIPS34K_MISSED_ITLB_WAR
1693 	int res = 0;
1694 
1695 	__asm__ __volatile__(
1696 	"	.set	push					\n"
1697 	"	.set	noreorder				\n"
1698 	"	.set	noat					\n"
1699 	"	.set	mips32r2				\n"
1700 	"	.word	0x41610001		# dvpe $1	\n"
1701 	"	move	%0, $1					\n"
1702 	"	ehb						\n"
1703 	"	.set	pop					\n"
1704 	: "=r" (res));
1705 
1706 	instruction_hazard();
1707 #endif
1708 
1709 	__asm__ __volatile__(
1710 		".set noreorder\n\t"
1711 		"tlbr\n\t"
1712 		".set reorder");
1713 
1714 #if MIPS34K_MISSED_ITLB_WAR
1715 	if ((res & _ULCAST_(1)))
1716 		__asm__ __volatile__(
1717 		"	.set	push				\n"
1718 		"	.set	noreorder			\n"
1719 		"	.set	noat				\n"
1720 		"	.set	mips32r2			\n"
1721 		"	.word	0x41600021	# evpe		\n"
1722 		"	ehb					\n"
1723 		"	.set	pop				\n");
1724 #endif
1725 }
1726 
1727 static inline void tlb_write_indexed(void)
1728 {
1729 	__asm__ __volatile__(
1730 		".set noreorder\n\t"
1731 		"tlbwi\n\t"
1732 		".set reorder");
1733 }
1734 
1735 static inline void tlb_write_random(void)
1736 {
1737 	__asm__ __volatile__(
1738 		".set noreorder\n\t"
1739 		"tlbwr\n\t"
1740 		".set reorder");
1741 }
1742 
1743 /*
1744  * Manipulate bits in a c0 register.
1745  */
1746 #ifndef CONFIG_MIPS_MT_SMTC
1747 /*
1748  * SMTC Linux requires shutting-down microthread scheduling
1749  * during CP0 register read-modify-write sequences.
1750  */
1751 #define __BUILD_SET_C0(name)					\
1752 static inline unsigned int					\
1753 set_c0_##name(unsigned int set)					\
1754 {								\
1755 	unsigned int res, new;					\
1756 								\
1757 	res = read_c0_##name();					\
1758 	new = res | set;					\
1759 	write_c0_##name(new);					\
1760 								\
1761 	return res;						\
1762 }								\
1763 								\
1764 static inline unsigned int					\
1765 clear_c0_##name(unsigned int clear)				\
1766 {								\
1767 	unsigned int res, new;					\
1768 								\
1769 	res = read_c0_##name();					\
1770 	new = res & ~clear;					\
1771 	write_c0_##name(new);					\
1772 								\
1773 	return res;						\
1774 }								\
1775 								\
1776 static inline unsigned int					\
1777 change_c0_##name(unsigned int change, unsigned int val)		\
1778 {								\
1779 	unsigned int res, new;					\
1780 								\
1781 	res = read_c0_##name();					\
1782 	new = res & ~change;					\
1783 	new |= (val & change);					\
1784 	write_c0_##name(new);					\
1785 								\
1786 	return res;						\
1787 }
1788 
1789 #else /* SMTC versions that manage MT scheduling */
1790 
1791 #include <linux/irqflags.h>
1792 
1793 /*
1794  * This is a duplicate of dmt() in mipsmtregs.h to avoid problems with
1795  * header file recursion.
1796  */
1797 static inline unsigned int __dmt(void)
1798 {
1799 	int res;
1800 
1801 	__asm__ __volatile__(
1802 	"	.set	push						\n"
1803 	"	.set	mips32r2					\n"
1804 	"	.set	noat						\n"
1805 	"	.word	0x41610BC1			# dmt $1	\n"
1806 	"	ehb							\n"
1807 	"	move	%0, $1						\n"
1808 	"	.set	pop						\n"
1809 	: "=r" (res));
1810 
1811 	instruction_hazard();
1812 
1813 	return res;
1814 }
1815 
1816 #define __VPECONTROL_TE_SHIFT	15
1817 #define __VPECONTROL_TE		(1UL << __VPECONTROL_TE_SHIFT)
1818 
1819 #define __EMT_ENABLE		__VPECONTROL_TE
1820 
1821 static inline void __emt(unsigned int previous)
1822 {
1823 	if ((previous & __EMT_ENABLE))
1824 		__asm__ __volatile__(
1825 		"	.set	mips32r2				\n"
1826 		"	.word	0x41600be1		# emt		\n"
1827 		"	ehb						\n"
1828 		"	.set	mips0					\n");
1829 }
1830 
1831 static inline void __ehb(void)
1832 {
1833 	__asm__ __volatile__(
1834 	"	.set	mips32r2					\n"
1835 	"	ehb							\n"		"	.set	mips0						\n");
1836 }
1837 
1838 /*
1839  * Note that local_irq_save/restore affect TC-specific IXMT state,
1840  * not Status.IE as in non-SMTC kernel.
1841  */
1842 
1843 #define __BUILD_SET_C0(name)					\
1844 static inline unsigned int					\
1845 set_c0_##name(unsigned int set)					\
1846 {								\
1847 	unsigned int res;					\
1848 	unsigned int new;					\
1849 	unsigned int omt;					\
1850 	unsigned long flags;					\
1851 								\
1852 	local_irq_save(flags);					\
1853 	omt = __dmt();						\
1854 	res = read_c0_##name();					\
1855 	new = res | set;					\
1856 	write_c0_##name(new);					\
1857 	__emt(omt);						\
1858 	local_irq_restore(flags);				\
1859 								\
1860 	return res;						\
1861 }								\
1862 								\
1863 static inline unsigned int					\
1864 clear_c0_##name(unsigned int clear)				\
1865 {								\
1866 	unsigned int res;					\
1867 	unsigned int new;					\
1868 	unsigned int omt;					\
1869 	unsigned long flags;					\
1870 								\
1871 	local_irq_save(flags);					\
1872 	omt = __dmt();						\
1873 	res = read_c0_##name();					\
1874 	new = res & ~clear;					\
1875 	write_c0_##name(new);					\
1876 	__emt(omt);						\
1877 	local_irq_restore(flags);				\
1878 								\
1879 	return res;						\
1880 }								\
1881 								\
1882 static inline unsigned int					\
1883 change_c0_##name(unsigned int change, unsigned int newbits)	\
1884 {								\
1885 	unsigned int res;					\
1886 	unsigned int new;					\
1887 	unsigned int omt;					\
1888 	unsigned long flags;					\
1889 								\
1890 	local_irq_save(flags);					\
1891 								\
1892 	omt = __dmt();						\
1893 	res = read_c0_##name();					\
1894 	new = res & ~change;					\
1895 	new |= (newbits & change);				\
1896 	write_c0_##name(new);					\
1897 	__emt(omt);						\
1898 	local_irq_restore(flags);				\
1899 								\
1900 	return res;						\
1901 }
1902 #endif
1903 
1904 __BUILD_SET_C0(status)
1905 __BUILD_SET_C0(cause)
1906 __BUILD_SET_C0(config)
1907 __BUILD_SET_C0(config5)
1908 __BUILD_SET_C0(intcontrol)
1909 __BUILD_SET_C0(intctl)
1910 __BUILD_SET_C0(srsmap)
1911 __BUILD_SET_C0(brcm_config_0)
1912 __BUILD_SET_C0(brcm_bus_pll)
1913 __BUILD_SET_C0(brcm_reset)
1914 __BUILD_SET_C0(brcm_cmt_intr)
1915 __BUILD_SET_C0(brcm_cmt_ctrl)
1916 __BUILD_SET_C0(brcm_config)
1917 __BUILD_SET_C0(brcm_mode)
1918 
1919 #endif /* !__ASSEMBLY__ */
1920 
1921 #endif /* _ASM_MIPSREGS_H */
1922