xref: /openbmc/linux/arch/mips/include/asm/r4kcache.h (revision ccb01374) 
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  * Inline assembly cache operations.
7  *
8  * Copyright (C) 1996 David S. Miller (davem@davemloft.net)
9  * Copyright (C) 1997 - 2002 Ralf Baechle (ralf@gnu.org)
10  * Copyright (C) 2004 Ralf Baechle (ralf@linux-mips.org)
11  */
12 #ifndef _ASM_R4KCACHE_H
13 #define _ASM_R4KCACHE_H
14 
15 #include <linux/stringify.h>
16 
17 #include <asm/asm.h>
18 #include <asm/cacheops.h>
19 #include <asm/compiler.h>
20 #include <asm/cpu-features.h>
21 #include <asm/cpu-type.h>
22 #include <asm/mipsmtregs.h>
23 #include <asm/mmzone.h>
24 #include <linux/uaccess.h> /* for uaccess_kernel() */
25 
26 extern void (*r4k_blast_dcache)(void);
27 extern void (*r4k_blast_icache)(void);
28 
29 /*
30  * This macro return a properly sign-extended address suitable as base address
31  * for indexed cache operations.  Two issues here:
32  *
33  *  - The MIPS32 and MIPS64 specs permit an implementation to directly derive
34  *    the index bits from the virtual address.	This breaks with tradition
35  *    set by the R4000.	 To keep unpleasant surprises from happening we pick
36  *    an address in KSEG0 / CKSEG0.
37  *  - We need a properly sign extended address for 64-bit code.	 To get away
38  *    without ifdefs we let the compiler do it by a type cast.
39  */
40 #define INDEX_BASE	CKSEG0
41 
42 #define cache_op(op,addr)						\
43 	__asm__ __volatile__(						\
44 	"	.set	push					\n"	\
45 	"	.set	noreorder				\n"	\
46 	"	.set "MIPS_ISA_ARCH_LEVEL"			\n"	\
47 	"	cache	%0, %1					\n"	\
48 	"	.set	pop					\n"	\
49 	:								\
50 	: "i" (op), "R" (*(unsigned char *)(addr)))
51 
52 static inline void flush_icache_line_indexed(unsigned long addr)
53 {
54 	cache_op(Index_Invalidate_I, addr);
55 }
56 
57 static inline void flush_dcache_line_indexed(unsigned long addr)
58 {
59 	cache_op(Index_Writeback_Inv_D, addr);
60 }
61 
62 static inline void flush_scache_line_indexed(unsigned long addr)
63 {
64 	cache_op(Index_Writeback_Inv_SD, addr);
65 }
66 
67 static inline void flush_icache_line(unsigned long addr)
68 {
69 	switch (boot_cpu_type()) {
70 	case CPU_LOONGSON2:
71 		cache_op(Hit_Invalidate_I_Loongson2, addr);
72 		break;
73 
74 	default:
75 		cache_op(Hit_Invalidate_I, addr);
76 		break;
77 	}
78 }
79 
80 static inline void flush_dcache_line(unsigned long addr)
81 {
82 	cache_op(Hit_Writeback_Inv_D, addr);
83 }
84 
85 static inline void invalidate_dcache_line(unsigned long addr)
86 {
87 	cache_op(Hit_Invalidate_D, addr);
88 }
89 
90 static inline void invalidate_scache_line(unsigned long addr)
91 {
92 	cache_op(Hit_Invalidate_SD, addr);
93 }
94 
95 static inline void flush_scache_line(unsigned long addr)
96 {
97 	cache_op(Hit_Writeback_Inv_SD, addr);
98 }
99 
100 #define protected_cache_op(op,addr)				\
101 ({								\
102 	int __err = 0;						\
103 	__asm__ __volatile__(					\
104 	"	.set	push			\n"		\
105 	"	.set	noreorder		\n"		\
106 	"	.set "MIPS_ISA_ARCH_LEVEL"	\n"		\
107 	"1:	cache	%1, (%2)		\n"		\
108 	"2:	.insn				\n"		\
109 	"	.set	pop			\n"		\
110 	"	.section .fixup,\"ax\"		\n"		\
111 	"3:	li	%0, %3			\n"		\
112 	"	j	2b			\n"		\
113 	"	.previous			\n"		\
114 	"	.section __ex_table,\"a\"	\n"		\
115 	"	"STR(PTR)" 1b, 3b		\n"		\
116 	"	.previous"					\
117 	: "+r" (__err)						\
118 	: "i" (op), "r" (addr), "i" (-EFAULT));			\
119 	__err;							\
120 })
121 
122 
123 #define protected_cachee_op(op,addr)				\
124 ({								\
125 	int __err = 0;						\
126 	__asm__ __volatile__(					\
127 	"	.set	push			\n"		\
128 	"	.set	noreorder		\n"		\
129 	"	.set	mips0			\n"		\
130 	"	.set	eva			\n"		\
131 	"1:	cachee	%1, (%2)		\n"		\
132 	"2:	.insn				\n"		\
133 	"	.set	pop			\n"		\
134 	"	.section .fixup,\"ax\"		\n"		\
135 	"3:	li	%0, %3			\n"		\
136 	"	j	2b			\n"		\
137 	"	.previous			\n"		\
138 	"	.section __ex_table,\"a\"	\n"		\
139 	"	"STR(PTR)" 1b, 3b		\n"		\
140 	"	.previous"					\
141 	: "+r" (__err)						\
142 	: "i" (op), "r" (addr), "i" (-EFAULT));			\
143 	__err;							\
144 })
145 
146 /*
147  * The next two are for badland addresses like signal trampolines.
148  */
149 static inline int protected_flush_icache_line(unsigned long addr)
150 {
151 	switch (boot_cpu_type()) {
152 	case CPU_LOONGSON2:
153 		return protected_cache_op(Hit_Invalidate_I_Loongson2, addr);
154 
155 	default:
156 #ifdef CONFIG_EVA
157 		return protected_cachee_op(Hit_Invalidate_I, addr);
158 #else
159 		return protected_cache_op(Hit_Invalidate_I, addr);
160 #endif
161 	}
162 }
163 
164 /*
165  * R10000 / R12000 hazard - these processors don't support the Hit_Writeback_D
166  * cacheop so we use Hit_Writeback_Inv_D which is supported by all R4000-style
167  * caches.  We're talking about one cacheline unnecessarily getting invalidated
168  * here so the penalty isn't overly hard.
169  */
170 static inline int protected_writeback_dcache_line(unsigned long addr)
171 {
172 #ifdef CONFIG_EVA
173 	return protected_cachee_op(Hit_Writeback_Inv_D, addr);
174 #else
175 	return protected_cache_op(Hit_Writeback_Inv_D, addr);
176 #endif
177 }
178 
179 static inline int protected_writeback_scache_line(unsigned long addr)
180 {
181 #ifdef CONFIG_EVA
182 	return protected_cachee_op(Hit_Writeback_Inv_SD, addr);
183 #else
184 	return protected_cache_op(Hit_Writeback_Inv_SD, addr);
185 #endif
186 }
187 
188 /*
189  * This one is RM7000-specific
190  */
191 static inline void invalidate_tcache_page(unsigned long addr)
192 {
193 	cache_op(Page_Invalidate_T, addr);
194 }
195 
196 #ifndef CONFIG_CPU_MIPSR6
197 #define cache16_unroll32(base,op)					\
198 	__asm__ __volatile__(						\
199 	"	.set push					\n"	\
200 	"	.set noreorder					\n"	\
201 	"	.set mips3					\n"	\
202 	"	cache %1, 0x000(%0); cache %1, 0x010(%0)	\n"	\
203 	"	cache %1, 0x020(%0); cache %1, 0x030(%0)	\n"	\
204 	"	cache %1, 0x040(%0); cache %1, 0x050(%0)	\n"	\
205 	"	cache %1, 0x060(%0); cache %1, 0x070(%0)	\n"	\
206 	"	cache %1, 0x080(%0); cache %1, 0x090(%0)	\n"	\
207 	"	cache %1, 0x0a0(%0); cache %1, 0x0b0(%0)	\n"	\
208 	"	cache %1, 0x0c0(%0); cache %1, 0x0d0(%0)	\n"	\
209 	"	cache %1, 0x0e0(%0); cache %1, 0x0f0(%0)	\n"	\
210 	"	cache %1, 0x100(%0); cache %1, 0x110(%0)	\n"	\
211 	"	cache %1, 0x120(%0); cache %1, 0x130(%0)	\n"	\
212 	"	cache %1, 0x140(%0); cache %1, 0x150(%0)	\n"	\
213 	"	cache %1, 0x160(%0); cache %1, 0x170(%0)	\n"	\
214 	"	cache %1, 0x180(%0); cache %1, 0x190(%0)	\n"	\
215 	"	cache %1, 0x1a0(%0); cache %1, 0x1b0(%0)	\n"	\
216 	"	cache %1, 0x1c0(%0); cache %1, 0x1d0(%0)	\n"	\
217 	"	cache %1, 0x1e0(%0); cache %1, 0x1f0(%0)	\n"	\
218 	"	.set pop					\n"	\
219 		:							\
220 		: "r" (base),						\
221 		  "i" (op));
222 
223 #define cache32_unroll32(base,op)					\
224 	__asm__ __volatile__(						\
225 	"	.set push					\n"	\
226 	"	.set noreorder					\n"	\
227 	"	.set mips3					\n"	\
228 	"	cache %1, 0x000(%0); cache %1, 0x020(%0)	\n"	\
229 	"	cache %1, 0x040(%0); cache %1, 0x060(%0)	\n"	\
230 	"	cache %1, 0x080(%0); cache %1, 0x0a0(%0)	\n"	\
231 	"	cache %1, 0x0c0(%0); cache %1, 0x0e0(%0)	\n"	\
232 	"	cache %1, 0x100(%0); cache %1, 0x120(%0)	\n"	\
233 	"	cache %1, 0x140(%0); cache %1, 0x160(%0)	\n"	\
234 	"	cache %1, 0x180(%0); cache %1, 0x1a0(%0)	\n"	\
235 	"	cache %1, 0x1c0(%0); cache %1, 0x1e0(%0)	\n"	\
236 	"	cache %1, 0x200(%0); cache %1, 0x220(%0)	\n"	\
237 	"	cache %1, 0x240(%0); cache %1, 0x260(%0)	\n"	\
238 	"	cache %1, 0x280(%0); cache %1, 0x2a0(%0)	\n"	\
239 	"	cache %1, 0x2c0(%0); cache %1, 0x2e0(%0)	\n"	\
240 	"	cache %1, 0x300(%0); cache %1, 0x320(%0)	\n"	\
241 	"	cache %1, 0x340(%0); cache %1, 0x360(%0)	\n"	\
242 	"	cache %1, 0x380(%0); cache %1, 0x3a0(%0)	\n"	\
243 	"	cache %1, 0x3c0(%0); cache %1, 0x3e0(%0)	\n"	\
244 	"	.set pop					\n"	\
245 		:							\
246 		: "r" (base),						\
247 		  "i" (op));
248 
249 #define cache64_unroll32(base,op)					\
250 	__asm__ __volatile__(						\
251 	"	.set push					\n"	\
252 	"	.set noreorder					\n"	\
253 	"	.set mips3					\n"	\
254 	"	cache %1, 0x000(%0); cache %1, 0x040(%0)	\n"	\
255 	"	cache %1, 0x080(%0); cache %1, 0x0c0(%0)	\n"	\
256 	"	cache %1, 0x100(%0); cache %1, 0x140(%0)	\n"	\
257 	"	cache %1, 0x180(%0); cache %1, 0x1c0(%0)	\n"	\
258 	"	cache %1, 0x200(%0); cache %1, 0x240(%0)	\n"	\
259 	"	cache %1, 0x280(%0); cache %1, 0x2c0(%0)	\n"	\
260 	"	cache %1, 0x300(%0); cache %1, 0x340(%0)	\n"	\
261 	"	cache %1, 0x380(%0); cache %1, 0x3c0(%0)	\n"	\
262 	"	cache %1, 0x400(%0); cache %1, 0x440(%0)	\n"	\
263 	"	cache %1, 0x480(%0); cache %1, 0x4c0(%0)	\n"	\
264 	"	cache %1, 0x500(%0); cache %1, 0x540(%0)	\n"	\
265 	"	cache %1, 0x580(%0); cache %1, 0x5c0(%0)	\n"	\
266 	"	cache %1, 0x600(%0); cache %1, 0x640(%0)	\n"	\
267 	"	cache %1, 0x680(%0); cache %1, 0x6c0(%0)	\n"	\
268 	"	cache %1, 0x700(%0); cache %1, 0x740(%0)	\n"	\
269 	"	cache %1, 0x780(%0); cache %1, 0x7c0(%0)	\n"	\
270 	"	.set pop					\n"	\
271 		:							\
272 		: "r" (base),						\
273 		  "i" (op));
274 
275 #define cache128_unroll32(base,op)					\
276 	__asm__ __volatile__(						\
277 	"	.set push					\n"	\
278 	"	.set noreorder					\n"	\
279 	"	.set mips3					\n"	\
280 	"	cache %1, 0x000(%0); cache %1, 0x080(%0)	\n"	\
281 	"	cache %1, 0x100(%0); cache %1, 0x180(%0)	\n"	\
282 	"	cache %1, 0x200(%0); cache %1, 0x280(%0)	\n"	\
283 	"	cache %1, 0x300(%0); cache %1, 0x380(%0)	\n"	\
284 	"	cache %1, 0x400(%0); cache %1, 0x480(%0)	\n"	\
285 	"	cache %1, 0x500(%0); cache %1, 0x580(%0)	\n"	\
286 	"	cache %1, 0x600(%0); cache %1, 0x680(%0)	\n"	\
287 	"	cache %1, 0x700(%0); cache %1, 0x780(%0)	\n"	\
288 	"	cache %1, 0x800(%0); cache %1, 0x880(%0)	\n"	\
289 	"	cache %1, 0x900(%0); cache %1, 0x980(%0)	\n"	\
290 	"	cache %1, 0xa00(%0); cache %1, 0xa80(%0)	\n"	\
291 	"	cache %1, 0xb00(%0); cache %1, 0xb80(%0)	\n"	\
292 	"	cache %1, 0xc00(%0); cache %1, 0xc80(%0)	\n"	\
293 	"	cache %1, 0xd00(%0); cache %1, 0xd80(%0)	\n"	\
294 	"	cache %1, 0xe00(%0); cache %1, 0xe80(%0)	\n"	\
295 	"	cache %1, 0xf00(%0); cache %1, 0xf80(%0)	\n"	\
296 	"	.set pop					\n"	\
297 		:							\
298 		: "r" (base),						\
299 		  "i" (op));
300 
301 #else
302 /*
303  * MIPS R6 changed the cache opcode and moved to a 8-bit offset field.
304  * This means we now need to increment the base register before we flush
305  * more cache lines
306  */
307 #define cache16_unroll32(base,op)				\
308 	__asm__ __volatile__(					\
309 	"	.set push\n"					\
310 	"	.set noreorder\n"				\
311 	"	.set mips64r6\n"				\
312 	"	.set noat\n"					\
313 	"	cache %1, 0x000(%0); cache %1, 0x010(%0)\n"	\
314 	"	cache %1, 0x020(%0); cache %1, 0x030(%0)\n"	\
315 	"	cache %1, 0x040(%0); cache %1, 0x050(%0)\n"	\
316 	"	cache %1, 0x060(%0); cache %1, 0x070(%0)\n"	\
317 	"	cache %1, 0x080(%0); cache %1, 0x090(%0)\n"	\
318 	"	cache %1, 0x0a0(%0); cache %1, 0x0b0(%0)\n"	\
319 	"	cache %1, 0x0c0(%0); cache %1, 0x0d0(%0)\n"	\
320 	"	cache %1, 0x0e0(%0); cache %1, 0x0f0(%0)\n"	\
321 	"	"__stringify(LONG_ADDIU)" $1, %0, 0x100	\n"	\
322 	"	cache %1, 0x000($1); cache %1, 0x010($1)\n"	\
323 	"	cache %1, 0x020($1); cache %1, 0x030($1)\n"	\
324 	"	cache %1, 0x040($1); cache %1, 0x050($1)\n"	\
325 	"	cache %1, 0x060($1); cache %1, 0x070($1)\n"	\
326 	"	cache %1, 0x080($1); cache %1, 0x090($1)\n"	\
327 	"	cache %1, 0x0a0($1); cache %1, 0x0b0($1)\n"	\
328 	"	cache %1, 0x0c0($1); cache %1, 0x0d0($1)\n"	\
329 	"	cache %1, 0x0e0($1); cache %1, 0x0f0($1)\n"	\
330 	"	.set pop\n"					\
331 		:						\
332 		: "r" (base),					\
333 		  "i" (op));
334 
335 #define cache32_unroll32(base,op)				\
336 	__asm__ __volatile__(					\
337 	"	.set push\n"					\
338 	"	.set noreorder\n"				\
339 	"	.set mips64r6\n"				\
340 	"	.set noat\n"					\
341 	"	cache %1, 0x000(%0); cache %1, 0x020(%0)\n"	\
342 	"	cache %1, 0x040(%0); cache %1, 0x060(%0)\n"	\
343 	"	cache %1, 0x080(%0); cache %1, 0x0a0(%0)\n"	\
344 	"	cache %1, 0x0c0(%0); cache %1, 0x0e0(%0)\n"	\
345 	"	"__stringify(LONG_ADDIU)" $1, %0, 0x100 \n"	\
346 	"	cache %1, 0x000($1); cache %1, 0x020($1)\n"	\
347 	"	cache %1, 0x040($1); cache %1, 0x060($1)\n"	\
348 	"	cache %1, 0x080($1); cache %1, 0x0a0($1)\n"	\
349 	"	cache %1, 0x0c0($1); cache %1, 0x0e0($1)\n"	\
350 	"	"__stringify(LONG_ADDIU)" $1, $1, 0x100 \n"	\
351 	"	cache %1, 0x000($1); cache %1, 0x020($1)\n"	\
352 	"	cache %1, 0x040($1); cache %1, 0x060($1)\n"	\
353 	"	cache %1, 0x080($1); cache %1, 0x0a0($1)\n"	\
354 	"	cache %1, 0x0c0($1); cache %1, 0x0e0($1)\n"	\
355 	"	"__stringify(LONG_ADDIU)" $1, $1, 0x100\n"	\
356 	"	cache %1, 0x000($1); cache %1, 0x020($1)\n"	\
357 	"	cache %1, 0x040($1); cache %1, 0x060($1)\n"	\
358 	"	cache %1, 0x080($1); cache %1, 0x0a0($1)\n"	\
359 	"	cache %1, 0x0c0($1); cache %1, 0x0e0($1)\n"	\
360 	"	.set pop\n"					\
361 		:						\
362 		: "r" (base),					\
363 		  "i" (op));
364 
365 #define cache64_unroll32(base,op)				\
366 	__asm__ __volatile__(					\
367 	"	.set push\n"					\
368 	"	.set noreorder\n"				\
369 	"	.set mips64r6\n"				\
370 	"	.set noat\n"					\
371 	"	cache %1, 0x000(%0); cache %1, 0x040(%0)\n"	\
372 	"	cache %1, 0x080(%0); cache %1, 0x0c0(%0)\n"	\
373 	"	"__stringify(LONG_ADDIU)" $1, %0, 0x100 \n"	\
374 	"	cache %1, 0x000($1); cache %1, 0x040($1)\n"	\
375 	"	cache %1, 0x080($1); cache %1, 0x0c0($1)\n"	\
376 	"	"__stringify(LONG_ADDIU)" $1, $1, 0x100 \n"	\
377 	"	cache %1, 0x000($1); cache %1, 0x040($1)\n"	\
378 	"	cache %1, 0x080($1); cache %1, 0x0c0($1)\n"	\
379 	"	"__stringify(LONG_ADDIU)" $1, $1, 0x100 \n"	\
380 	"	cache %1, 0x000($1); cache %1, 0x040($1)\n"	\
381 	"	cache %1, 0x080($1); cache %1, 0x0c0($1)\n"	\
382 	"	"__stringify(LONG_ADDIU)" $1, $1, 0x100 \n"	\
383 	"	cache %1, 0x000($1); cache %1, 0x040($1)\n"	\
384 	"	cache %1, 0x080($1); cache %1, 0x0c0($1)\n"	\
385 	"	"__stringify(LONG_ADDIU)" $1, $1, 0x100 \n"	\
386 	"	cache %1, 0x000($1); cache %1, 0x040($1)\n"	\
387 	"	cache %1, 0x080($1); cache %1, 0x0c0($1)\n"	\
388 	"	"__stringify(LONG_ADDIU)" $1, $1, 0x100 \n"	\
389 	"	cache %1, 0x000($1); cache %1, 0x040($1)\n"	\
390 	"	cache %1, 0x080($1); cache %1, 0x0c0($1)\n"	\
391 	"	"__stringify(LONG_ADDIU)" $1, $1, 0x100 \n"	\
392 	"	cache %1, 0x000($1); cache %1, 0x040($1)\n"	\
393 	"	cache %1, 0x080($1); cache %1, 0x0c0($1)\n"	\
394 	"	.set pop\n"					\
395 		:						\
396 		: "r" (base),					\
397 		  "i" (op));
398 
399 #define cache128_unroll32(base,op)				\
400 	__asm__ __volatile__(					\
401 	"	.set push\n"					\
402 	"	.set noreorder\n"				\
403 	"	.set mips64r6\n"				\
404 	"	.set noat\n"					\
405 	"	cache %1, 0x000(%0); cache %1, 0x080(%0)\n"	\
406 	"	"__stringify(LONG_ADDIU)" $1, %0, 0x100 \n"	\
407 	"	cache %1, 0x000($1); cache %1, 0x080($1)\n"	\
408 	"	"__stringify(LONG_ADDIU)" $1, $1, 0x100 \n"	\
409 	"	cache %1, 0x000($1); cache %1, 0x080($1)\n"	\
410 	"	"__stringify(LONG_ADDIU)" $1, $1, 0x100 \n"	\
411 	"	cache %1, 0x000($1); cache %1, 0x080($1)\n"	\
412 	"	"__stringify(LONG_ADDIU)" $1, $1, 0x100 \n"	\
413 	"	cache %1, 0x000($1); cache %1, 0x080($1)\n"	\
414 	"	"__stringify(LONG_ADDIU)" $1, $1, 0x100 \n"	\
415 	"	cache %1, 0x000($1); cache %1, 0x080($1)\n"	\
416 	"	"__stringify(LONG_ADDIU)" $1, $1, 0x100 \n"	\
417 	"	cache %1, 0x000($1); cache %1, 0x080($1)\n"	\
418 	"	"__stringify(LONG_ADDIU)" $1, $1, 0x100 \n"	\
419 	"	cache %1, 0x000($1); cache %1, 0x080($1)\n"	\
420 	"	"__stringify(LONG_ADDIU)" $1, $1, 0x100 \n"	\
421 	"	cache %1, 0x000($1); cache %1, 0x080($1)\n"	\
422 	"	"__stringify(LONG_ADDIU)" $1, $1, 0x100 \n"	\
423 	"	cache %1, 0x000($1); cache %1, 0x080($1)\n"	\
424 	"	"__stringify(LONG_ADDIU)" $1, $1, 0x100 \n"	\
425 	"	cache %1, 0x000($1); cache %1, 0x080($1)\n"	\
426 	"	"__stringify(LONG_ADDIU)" $1, $1, 0x100 \n"	\
427 	"	cache %1, 0x000($1); cache %1, 0x080($1)\n"	\
428 	"	"__stringify(LONG_ADDIU)" $1, $1, 0x100 \n"	\
429 	"	cache %1, 0x000($1); cache %1, 0x080($1)\n"	\
430 	"	"__stringify(LONG_ADDIU)" $1, $1, 0x100 \n"	\
431 	"	cache %1, 0x000($1); cache %1, 0x080($1)\n"	\
432 	"	"__stringify(LONG_ADDIU)" $1, $1, 0x100 \n"	\
433 	"	cache %1, 0x000($1); cache %1, 0x080($1)\n"	\
434 	"	"__stringify(LONG_ADDIU)" $1, $1, 0x100 \n"	\
435 	"	cache %1, 0x000($1); cache %1, 0x080($1)\n"	\
436 	"	"__stringify(LONG_ADDIU)" $1, $1, 0x100 \n"	\
437 	"	cache %1, 0x000($1); cache %1, 0x080($1)\n"	\
438 	"	.set pop\n"					\
439 		:						\
440 		: "r" (base),					\
441 		  "i" (op));
442 #endif /* CONFIG_CPU_MIPSR6 */
443 
444 /*
445  * Perform the cache operation specified by op using a user mode virtual
446  * address while in kernel mode.
447  */
448 #define cache16_unroll32_user(base,op)					\
449 	__asm__ __volatile__(						\
450 	"	.set push					\n"	\
451 	"	.set noreorder					\n"	\
452 	"	.set mips0					\n"	\
453 	"	.set eva					\n"	\
454 	"	cachee %1, 0x000(%0); cachee %1, 0x010(%0)	\n"	\
455 	"	cachee %1, 0x020(%0); cachee %1, 0x030(%0)	\n"	\
456 	"	cachee %1, 0x040(%0); cachee %1, 0x050(%0)	\n"	\
457 	"	cachee %1, 0x060(%0); cachee %1, 0x070(%0)	\n"	\
458 	"	cachee %1, 0x080(%0); cachee %1, 0x090(%0)	\n"	\
459 	"	cachee %1, 0x0a0(%0); cachee %1, 0x0b0(%0)	\n"	\
460 	"	cachee %1, 0x0c0(%0); cachee %1, 0x0d0(%0)	\n"	\
461 	"	cachee %1, 0x0e0(%0); cachee %1, 0x0f0(%0)	\n"	\
462 	"	cachee %1, 0x100(%0); cachee %1, 0x110(%0)	\n"	\
463 	"	cachee %1, 0x120(%0); cachee %1, 0x130(%0)	\n"	\
464 	"	cachee %1, 0x140(%0); cachee %1, 0x150(%0)	\n"	\
465 	"	cachee %1, 0x160(%0); cachee %1, 0x170(%0)	\n"	\
466 	"	cachee %1, 0x180(%0); cachee %1, 0x190(%0)	\n"	\
467 	"	cachee %1, 0x1a0(%0); cachee %1, 0x1b0(%0)	\n"	\
468 	"	cachee %1, 0x1c0(%0); cachee %1, 0x1d0(%0)	\n"	\
469 	"	cachee %1, 0x1e0(%0); cachee %1, 0x1f0(%0)	\n"	\
470 	"	.set pop					\n"	\
471 		:							\
472 		: "r" (base),						\
473 		  "i" (op));
474 
475 #define cache32_unroll32_user(base, op)					\
476 	__asm__ __volatile__(						\
477 	"	.set push					\n"	\
478 	"	.set noreorder					\n"	\
479 	"	.set mips0					\n"	\
480 	"	.set eva					\n"	\
481 	"	cachee %1, 0x000(%0); cachee %1, 0x020(%0)	\n"	\
482 	"	cachee %1, 0x040(%0); cachee %1, 0x060(%0)	\n"	\
483 	"	cachee %1, 0x080(%0); cachee %1, 0x0a0(%0)	\n"	\
484 	"	cachee %1, 0x0c0(%0); cachee %1, 0x0e0(%0)	\n"	\
485 	"	cachee %1, 0x100(%0); cachee %1, 0x120(%0)	\n"	\
486 	"	cachee %1, 0x140(%0); cachee %1, 0x160(%0)	\n"	\
487 	"	cachee %1, 0x180(%0); cachee %1, 0x1a0(%0)	\n"	\
488 	"	cachee %1, 0x1c0(%0); cachee %1, 0x1e0(%0)	\n"	\
489 	"	cachee %1, 0x200(%0); cachee %1, 0x220(%0)	\n"	\
490 	"	cachee %1, 0x240(%0); cachee %1, 0x260(%0)	\n"	\
491 	"	cachee %1, 0x280(%0); cachee %1, 0x2a0(%0)	\n"	\
492 	"	cachee %1, 0x2c0(%0); cachee %1, 0x2e0(%0)	\n"	\
493 	"	cachee %1, 0x300(%0); cachee %1, 0x320(%0)	\n"	\
494 	"	cachee %1, 0x340(%0); cachee %1, 0x360(%0)	\n"	\
495 	"	cachee %1, 0x380(%0); cachee %1, 0x3a0(%0)	\n"	\
496 	"	cachee %1, 0x3c0(%0); cachee %1, 0x3e0(%0)	\n"	\
497 	"	.set pop					\n"	\
498 		:							\
499 		: "r" (base),						\
500 		  "i" (op));
501 
502 #define cache64_unroll32_user(base, op)					\
503 	__asm__ __volatile__(						\
504 	"	.set push					\n"	\
505 	"	.set noreorder					\n"	\
506 	"	.set mips0					\n"	\
507 	"	.set eva					\n"	\
508 	"	cachee %1, 0x000(%0); cachee %1, 0x040(%0)	\n"	\
509 	"	cachee %1, 0x080(%0); cachee %1, 0x0c0(%0)	\n"	\
510 	"	cachee %1, 0x100(%0); cachee %1, 0x140(%0)	\n"	\
511 	"	cachee %1, 0x180(%0); cachee %1, 0x1c0(%0)	\n"	\
512 	"	cachee %1, 0x200(%0); cachee %1, 0x240(%0)	\n"	\
513 	"	cachee %1, 0x280(%0); cachee %1, 0x2c0(%0)	\n"	\
514 	"	cachee %1, 0x300(%0); cachee %1, 0x340(%0)	\n"	\
515 	"	cachee %1, 0x380(%0); cachee %1, 0x3c0(%0)	\n"	\
516 	"	cachee %1, 0x400(%0); cachee %1, 0x440(%0)	\n"	\
517 	"	cachee %1, 0x480(%0); cachee %1, 0x4c0(%0)	\n"	\
518 	"	cachee %1, 0x500(%0); cachee %1, 0x540(%0)	\n"	\
519 	"	cachee %1, 0x580(%0); cachee %1, 0x5c0(%0)	\n"	\
520 	"	cachee %1, 0x600(%0); cachee %1, 0x640(%0)	\n"	\
521 	"	cachee %1, 0x680(%0); cachee %1, 0x6c0(%0)	\n"	\
522 	"	cachee %1, 0x700(%0); cachee %1, 0x740(%0)	\n"	\
523 	"	cachee %1, 0x780(%0); cachee %1, 0x7c0(%0)	\n"	\
524 	"	.set pop					\n"	\
525 		:							\
526 		: "r" (base),						\
527 		  "i" (op));
528 
529 /* build blast_xxx, blast_xxx_page, blast_xxx_page_indexed */
530 #define __BUILD_BLAST_CACHE(pfx, desc, indexop, hitop, lsize, extra)	\
531 static inline void extra##blast_##pfx##cache##lsize(void)		\
532 {									\
533 	unsigned long start = INDEX_BASE;				\
534 	unsigned long end = start + current_cpu_data.desc.waysize;	\
535 	unsigned long ws_inc = 1UL << current_cpu_data.desc.waybit;	\
536 	unsigned long ws_end = current_cpu_data.desc.ways <<		\
537 			       current_cpu_data.desc.waybit;		\
538 	unsigned long ws, addr;						\
539 									\
540 	for (ws = 0; ws < ws_end; ws += ws_inc)				\
541 		for (addr = start; addr < end; addr += lsize * 32)	\
542 			cache##lsize##_unroll32(addr|ws, indexop);	\
543 }									\
544 									\
545 static inline void extra##blast_##pfx##cache##lsize##_page(unsigned long page) \
546 {									\
547 	unsigned long start = page;					\
548 	unsigned long end = page + PAGE_SIZE;				\
549 									\
550 	do {								\
551 		cache##lsize##_unroll32(start, hitop);			\
552 		start += lsize * 32;					\
553 	} while (start < end);						\
554 }									\
555 									\
556 static inline void extra##blast_##pfx##cache##lsize##_page_indexed(unsigned long page) \
557 {									\
558 	unsigned long indexmask = current_cpu_data.desc.waysize - 1;	\
559 	unsigned long start = INDEX_BASE + (page & indexmask);		\
560 	unsigned long end = start + PAGE_SIZE;				\
561 	unsigned long ws_inc = 1UL << current_cpu_data.desc.waybit;	\
562 	unsigned long ws_end = current_cpu_data.desc.ways <<		\
563 			       current_cpu_data.desc.waybit;		\
564 	unsigned long ws, addr;						\
565 									\
566 	for (ws = 0; ws < ws_end; ws += ws_inc)				\
567 		for (addr = start; addr < end; addr += lsize * 32)	\
568 			cache##lsize##_unroll32(addr|ws, indexop);	\
569 }
570 
571 __BUILD_BLAST_CACHE(d, dcache, Index_Writeback_Inv_D, Hit_Writeback_Inv_D, 16, )
572 __BUILD_BLAST_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 16, )
573 __BUILD_BLAST_CACHE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 16, )
574 __BUILD_BLAST_CACHE(d, dcache, Index_Writeback_Inv_D, Hit_Writeback_Inv_D, 32, )
575 __BUILD_BLAST_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 32, )
576 __BUILD_BLAST_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I_Loongson2, 32, loongson2_)
577 __BUILD_BLAST_CACHE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 32, )
578 __BUILD_BLAST_CACHE(d, dcache, Index_Writeback_Inv_D, Hit_Writeback_Inv_D, 64, )
579 __BUILD_BLAST_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 64, )
580 __BUILD_BLAST_CACHE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 64, )
581 __BUILD_BLAST_CACHE(d, dcache, Index_Writeback_Inv_D, Hit_Writeback_Inv_D, 128, )
582 __BUILD_BLAST_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 128, )
583 __BUILD_BLAST_CACHE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 128, )
584 
585 __BUILD_BLAST_CACHE(inv_d, dcache, Index_Writeback_Inv_D, Hit_Invalidate_D, 16, )
586 __BUILD_BLAST_CACHE(inv_d, dcache, Index_Writeback_Inv_D, Hit_Invalidate_D, 32, )
587 __BUILD_BLAST_CACHE(inv_s, scache, Index_Writeback_Inv_SD, Hit_Invalidate_SD, 16, )
588 __BUILD_BLAST_CACHE(inv_s, scache, Index_Writeback_Inv_SD, Hit_Invalidate_SD, 32, )
589 __BUILD_BLAST_CACHE(inv_s, scache, Index_Writeback_Inv_SD, Hit_Invalidate_SD, 64, )
590 __BUILD_BLAST_CACHE(inv_s, scache, Index_Writeback_Inv_SD, Hit_Invalidate_SD, 128, )
591 
592 #define __BUILD_BLAST_USER_CACHE(pfx, desc, indexop, hitop, lsize) \
593 static inline void blast_##pfx##cache##lsize##_user_page(unsigned long page) \
594 {									\
595 	unsigned long start = page;					\
596 	unsigned long end = page + PAGE_SIZE;				\
597 									\
598 	do {								\
599 		cache##lsize##_unroll32_user(start, hitop);             \
600 		start += lsize * 32;					\
601 	} while (start < end);						\
602 }
603 
604 __BUILD_BLAST_USER_CACHE(d, dcache, Index_Writeback_Inv_D, Hit_Writeback_Inv_D,
605 			 16)
606 __BUILD_BLAST_USER_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 16)
607 __BUILD_BLAST_USER_CACHE(d, dcache, Index_Writeback_Inv_D, Hit_Writeback_Inv_D,
608 			 32)
609 __BUILD_BLAST_USER_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 32)
610 __BUILD_BLAST_USER_CACHE(d, dcache, Index_Writeback_Inv_D, Hit_Writeback_Inv_D,
611 			 64)
612 __BUILD_BLAST_USER_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 64)
613 
614 /* build blast_xxx_range, protected_blast_xxx_range */
615 #define __BUILD_BLAST_CACHE_RANGE(pfx, desc, hitop, prot, extra)	\
616 static inline void prot##extra##blast_##pfx##cache##_range(unsigned long start, \
617 						    unsigned long end)	\
618 {									\
619 	unsigned long lsize = cpu_##desc##_line_size();			\
620 	unsigned long addr = start & ~(lsize - 1);			\
621 	unsigned long aend = (end - 1) & ~(lsize - 1);			\
622 									\
623 	while (1) {							\
624 		prot##cache_op(hitop, addr);				\
625 		if (addr == aend)					\
626 			break;						\
627 		addr += lsize;						\
628 	}								\
629 }
630 
631 #ifndef CONFIG_EVA
632 
633 __BUILD_BLAST_CACHE_RANGE(d, dcache, Hit_Writeback_Inv_D, protected_, )
634 __BUILD_BLAST_CACHE_RANGE(i, icache, Hit_Invalidate_I, protected_, )
635 
636 #else
637 
638 #define __BUILD_PROT_BLAST_CACHE_RANGE(pfx, desc, hitop)		\
639 static inline void protected_blast_##pfx##cache##_range(unsigned long start,\
640 							unsigned long end) \
641 {									\
642 	unsigned long lsize = cpu_##desc##_line_size();			\
643 	unsigned long addr = start & ~(lsize - 1);			\
644 	unsigned long aend = (end - 1) & ~(lsize - 1);			\
645 									\
646 	if (!uaccess_kernel()) {					\
647 		while (1) {						\
648 			protected_cachee_op(hitop, addr);		\
649 			if (addr == aend)				\
650 				break;					\
651 			addr += lsize;					\
652 		}							\
653 	} else {							\
654 		while (1) {						\
655 			protected_cache_op(hitop, addr);		\
656 			if (addr == aend)				\
657 				break;					\
658 			addr += lsize;					\
659 		}                                                       \
660 									\
661 	}								\
662 }
663 
664 __BUILD_PROT_BLAST_CACHE_RANGE(d, dcache, Hit_Writeback_Inv_D)
665 __BUILD_PROT_BLAST_CACHE_RANGE(i, icache, Hit_Invalidate_I)
666 
667 #endif
668 __BUILD_BLAST_CACHE_RANGE(s, scache, Hit_Writeback_Inv_SD, protected_, )
669 __BUILD_BLAST_CACHE_RANGE(i, icache, Hit_Invalidate_I_Loongson2, \
670 	protected_, loongson2_)
671 __BUILD_BLAST_CACHE_RANGE(d, dcache, Hit_Writeback_Inv_D, , )
672 __BUILD_BLAST_CACHE_RANGE(i, icache, Hit_Invalidate_I, , )
673 __BUILD_BLAST_CACHE_RANGE(s, scache, Hit_Writeback_Inv_SD, , )
674 /* blast_inv_dcache_range */
675 __BUILD_BLAST_CACHE_RANGE(inv_d, dcache, Hit_Invalidate_D, , )
676 __BUILD_BLAST_CACHE_RANGE(inv_s, scache, Hit_Invalidate_SD, , )
677 
678 /* Currently, this is very specific to Loongson-3 */
679 #define __BUILD_BLAST_CACHE_NODE(pfx, desc, indexop, hitop, lsize)	\
680 static inline void blast_##pfx##cache##lsize##_node(long node)		\
681 {									\
682 	unsigned long start = CAC_BASE | nid_to_addrbase(node);		\
683 	unsigned long end = start + current_cpu_data.desc.waysize;	\
684 	unsigned long ws_inc = 1UL << current_cpu_data.desc.waybit;	\
685 	unsigned long ws_end = current_cpu_data.desc.ways <<		\
686 			       current_cpu_data.desc.waybit;		\
687 	unsigned long ws, addr;						\
688 									\
689 	for (ws = 0; ws < ws_end; ws += ws_inc)				\
690 		for (addr = start; addr < end; addr += lsize * 32)	\
691 			cache##lsize##_unroll32(addr|ws, indexop);	\
692 }
693 
694 __BUILD_BLAST_CACHE_NODE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 16)
695 __BUILD_BLAST_CACHE_NODE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 32)
696 __BUILD_BLAST_CACHE_NODE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 64)
697 __BUILD_BLAST_CACHE_NODE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 128)
698 
699 #endif /* _ASM_R4KCACHE_H */
700