summaryrefslogtreecommitdiffstats
path: root/include/asm-sparc64/spitfire.h
blob: 9d7613eea8129a58dbbcca8dbaef05f2228f6d66 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
/* $Id: spitfire.h,v 1.18 2001/11/29 16:42:10 kanoj Exp $
 * spitfire.h: SpitFire/BlackBird/Cheetah inline MMU operations.
 *
 * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
 */

#ifndef _SPARC64_SPITFIRE_H
#define _SPARC64_SPITFIRE_H

#include <asm/asi.h>

/* The following register addresses are accessible via ASI_DMMU
 * and ASI_IMMU, that is there is a distinct and unique copy of
 * each these registers for each TLB.
 */
#define TSB_TAG_TARGET		0x0000000000000000 /* All chips				*/
#define TLB_SFSR		0x0000000000000018 /* All chips				*/
#define TSB_REG			0x0000000000000028 /* All chips				*/
#define TLB_TAG_ACCESS		0x0000000000000030 /* All chips				*/
#define VIRT_WATCHPOINT		0x0000000000000038 /* All chips				*/
#define PHYS_WATCHPOINT		0x0000000000000040 /* All chips				*/
#define TSB_EXTENSION_P		0x0000000000000048 /* Ultra-III and later		*/
#define TSB_EXTENSION_S		0x0000000000000050 /* Ultra-III and later, D-TLB only	*/
#define TSB_EXTENSION_N		0x0000000000000058 /* Ultra-III and later		*/
#define TLB_TAG_ACCESS_EXT	0x0000000000000060 /* Ultra-III+ and later		*/

/* These registers only exist as one entity, and are accessed
 * via ASI_DMMU only.
 */
#define PRIMARY_CONTEXT		0x0000000000000008
#define SECONDARY_CONTEXT	0x0000000000000010
#define DMMU_SFAR		0x0000000000000020
#define VIRT_WATCHPOINT		0x0000000000000038
#define PHYS_WATCHPOINT		0x0000000000000040

#define SPITFIRE_HIGHEST_LOCKED_TLBENT	(64 - 1)
#define CHEETAH_HIGHEST_LOCKED_TLBENT	(16 - 1)

#define L1DCACHE_SIZE		0x4000

#ifndef __ASSEMBLY__

enum ultra_tlb_layout {
	spitfire = 0,
	cheetah = 1,
	cheetah_plus = 2,
};

extern enum ultra_tlb_layout tlb_type;

extern int cheetah_pcache_forced_on;
extern void cheetah_enable_pcache(void);

#define sparc64_highest_locked_tlbent()	\
	(tlb_type == spitfire ? \
	 SPITFIRE_HIGHEST_LOCKED_TLBENT : \
	 CHEETAH_HIGHEST_LOCKED_TLBENT)

static __inline__ unsigned long spitfire_get_isfsr(void)
{
	unsigned long ret;

	__asm__ __volatile__("ldxa	[%1] %2, %0"
			     : "=r" (ret)
			     : "r" (TLB_SFSR), "i" (ASI_IMMU));
	return ret;
}

static __inline__ unsigned long spitfire_get_dsfsr(void)
{
	unsigned long ret;

	__asm__ __volatile__("ldxa	[%1] %2, %0"
			     : "=r" (ret)
			     : "r" (TLB_SFSR), "i" (ASI_DMMU));
	return ret;
}

static __inline__ unsigned long spitfire_get_sfar(void)
{
	unsigned long ret;

	__asm__ __volatile__("ldxa	[%1] %2, %0"
			     : "=r" (ret)
			     : "r" (DMMU_SFAR), "i" (ASI_DMMU));
	return ret;
}

static __inline__ void spitfire_put_isfsr(unsigned long sfsr)
{
	__asm__ __volatile__("stxa	%0, [%1] %2\n\t"
			     "membar	#Sync"
			     : /* no outputs */
			     : "r" (sfsr), "r" (TLB_SFSR), "i" (ASI_IMMU));
}

static __inline__ void spitfire_put_dsfsr(unsigned long sfsr)
{
	__asm__ __volatile__("stxa	%0, [%1] %2\n\t"
			     "membar	#Sync"
			     : /* no outputs */
			     : "r" (sfsr), "r" (TLB_SFSR), "i" (ASI_DMMU));
}

/* The data cache is write through, so this just invalidates the
 * specified line.
 */
static __inline__ void spitfire_put_dcache_tag(unsigned long addr, unsigned long tag)
{
	__asm__ __volatile__("stxa	%0, [%1] %2\n\t"
			     "membar	#Sync"
			     : /* No outputs */
			     : "r" (tag), "r" (addr), "i" (ASI_DCACHE_TAG));
	__asm__ __volatile__ ("membar #Sync" : : : "memory");
}

/* The instruction cache lines are flushed with this, but note that
 * this does not flush the pipeline.  It is possible for a line to
 * get flushed but stale instructions to still be in the pipeline,
 * a flush instruction (to any address) is sufficient to handle
 * this issue after the line is invalidated.
 */
static __inline__ void spitfire_put_icache_tag(unsigned long addr, unsigned long tag)
{
	__asm__ __volatile__("stxa	%0, [%1] %2\n\t"
			     "membar	#Sync"
			     : /* No outputs */
			     : "r" (tag), "r" (addr), "i" (ASI_IC_TAG));
}

static __inline__ unsigned long spitfire_get_dtlb_data(int entry)
{
	unsigned long data;

	__asm__ __volatile__("ldxa	[%1] %2, %0"
			     : "=r" (data)
			     : "r" (entry << 3), "i" (ASI_DTLB_DATA_ACCESS));

	/* Clear TTE diag bits. */
	data &= ~0x0003fe0000000000UL;

	return data;
}

static __inline__ unsigned long spitfire_get_dtlb_tag(int entry)
{
	unsigned long tag;

	__asm__ __volatile__("ldxa	[%1] %2, %0"
			     : "=r" (tag)
			     : "r" (entry << 3), "i" (ASI_DTLB_TAG_READ));
	return tag;
}

static __inline__ void spitfire_put_dtlb_data(int entry, unsigned long data)
{
	__asm__ __volatile__("stxa	%0, [%1] %2\n\t"
			     "membar	#Sync"
			     : /* No outputs */
			     : "r" (data), "r" (entry << 3),
			       "i" (ASI_DTLB_DATA_ACCESS));
}

static __inline__ unsigned long spitfire_get_itlb_data(int entry)
{
	unsigned long data;

	__asm__ __volatile__("ldxa	[%1] %2, %0"
			     : "=r" (data)
			     : "r" (entry << 3), "i" (ASI_ITLB_DATA_ACCESS));

	/* Clear TTE diag bits. */
	data &= ~0x0003fe0000000000UL;

	return data;
}

static __inline__ unsigned long spitfire_get_itlb_tag(int entry)
{
	unsigned long tag;

	__asm__ __volatile__("ldxa	[%1] %2, %0"
			     : "=r" (tag)
			     : "r" (entry << 3), "i" (ASI_ITLB_TAG_READ));
	return tag;
}

static __inline__ void spitfire_put_itlb_data(int entry, unsigned long data)
{
	__asm__ __volatile__("stxa	%0, [%1] %2\n\t"
			     "membar	#Sync"
			     : /* No outputs */
			     : "r" (data), "r" (entry << 3),
			       "i" (ASI_ITLB_DATA_ACCESS));
}

/* Spitfire hardware assisted TLB flushes. */

/* Context level flushes. */
static __inline__ void spitfire_flush_dtlb_primary_context(void)
{
	__asm__ __volatile__("stxa	%%g0, [%0] %1\n\t"
			     "membar	#Sync"
			     : /* No outputs */
			     : "r" (0x40), "i" (ASI_DMMU_DEMAP));
}

static __inline__ void spitfire_flush_itlb_primary_context(void)
{
	__asm__ __volatile__("stxa	%%g0, [%0] %1\n\t"
			     "membar	#Sync"
			     : /* No outputs */
			     : "r" (0x40), "i" (ASI_IMMU_DEMAP));
}

static __inline__ void spitfire_flush_dtlb_secondary_context(void)
{
	__asm__ __volatile__("stxa	%%g0, [%0] %1\n\t"
			     "membar	#Sync"
			     : /* No outputs */
			     : "r" (0x50), "i" (ASI_DMMU_DEMAP));
}

static __inline__ void spitfire_flush_itlb_secondary_context(void)
{
	__asm__ __volatile__("stxa	%%g0, [%0] %1\n\t"
			     "membar	#Sync"
			     : /* No outputs */
			     : "r" (0x50), "i" (ASI_IMMU_DEMAP));
}

static __inline__ void spitfire_flush_dtlb_nucleus_context(void)
{
	__asm__ __volatile__("stxa	%%g0, [%0] %1\n\t"
			     "membar	#Sync"
			     : /* No outputs */
			     : "r" (0x60), "i" (ASI_DMMU_DEMAP));
}

static __inline__ void spitfire_flush_itlb_nucleus_context(void)
{
	__asm__ __volatile__("stxa	%%g0, [%0] %1\n\t"
			     "membar	#Sync"
			     : /* No outputs */
			     : "r" (0x60), "i" (ASI_IMMU_DEMAP));
}

/* Page level flushes. */
static __inline__ void spitfire_flush_dtlb_primary_page(unsigned long page)
{
	__asm__ __volatile__("stxa	%%g0, [%0] %1\n\t"
			     "membar	#Sync"
			     : /* No outputs */
			     : "r" (page), "i" (ASI_DMMU_DEMAP));
}

static __inline__ void spitfire_flush_itlb_primary_page(unsigned long page)
{
	__asm__ __volatile__("stxa	%%g0, [%0] %1\n\t"
			     "membar	#Sync"
			     : /* No outputs */
			     : "r" (page), "i" (ASI_IMMU_DEMAP));
}

static __inline__ void spitfire_flush_dtlb_secondary_page(unsigned long page)
{
	__asm__ __volatile__("stxa	%%g0, [%0] %1\n\t"
			     "membar	#Sync"
			     : /* No outputs */
			     : "r" (page | 0x10), "i" (ASI_DMMU_DEMAP));
}

static __inline__ void spitfire_flush_itlb_secondary_page(unsigned long page)
{
	__asm__ __volatile__("stxa	%%g0, [%0] %1\n\t"
			     "membar	#Sync"
			     : /* No outputs */
			     : "r" (page | 0x10), "i" (ASI_IMMU_DEMAP));
}

static __inline__ void spitfire_flush_dtlb_nucleus_page(unsigned long page)
{
	__asm__ __volatile__("stxa	%%g0, [%0] %1\n\t"
			     "membar	#Sync"
			     : /* No outputs */
			     : "r" (page | 0x20), "i" (ASI_DMMU_DEMAP));
}

static __inline__ void spitfire_flush_itlb_nucleus_page(unsigned long page)
{
	__asm__ __volatile__("stxa	%%g0, [%0] %1\n\t"
			     "membar	#Sync"
			     : /* No outputs */
			     : "r" (page | 0x20), "i" (ASI_IMMU_DEMAP));
}

/* Cheetah has "all non-locked" tlb flushes. */
static __inline__ void cheetah_flush_dtlb_all(void)
{
	__asm__ __volatile__("stxa	%%g0, [%0] %1\n\t"
			     "membar	#Sync"
			     : /* No outputs */
			     : "r" (0x80), "i" (ASI_DMMU_DEMAP));
}

static __inline__ void cheetah_flush_itlb_all(void)
{
	__asm__ __volatile__("stxa	%%g0, [%0] %1\n\t"
			     "membar	#Sync"
			     : /* No outputs */
			     : "r" (0x80), "i" (ASI_IMMU_DEMAP));
}

/* Cheetah has a 4-tlb layout so direct access is a bit different.
 * The first two TLBs are fully assosciative, hold 16 entries, and are
 * used only for locked and >8K sized translations.  One exists for
 * data accesses and one for instruction accesses.
 *
 * The third TLB is for data accesses to 8K non-locked translations, is
 * 2 way assosciative, and holds 512 entries.  The fourth TLB is for
 * instruction accesses to 8K non-locked translations, is 2 way
 * assosciative, and holds 128 entries.
 *
 * Cheetah has some bug where bogus data can be returned from
 * ASI_{D,I}TLB_DATA_ACCESS loads, doing the load twice fixes
 * the problem for me. -DaveM
 */
static __inline__ unsigned long cheetah_get_ldtlb_data(int entry)
{
	unsigned long data;

	__asm__ __volatile__("ldxa	[%1] %2, %%g0\n\t"
			     "ldxa	[%1] %2, %0"
			     : "=r" (data)
			     : "r" ((0 << 16) | (entry << 3)),
			     "i" (ASI_DTLB_DATA_ACCESS));

	return data;
}

static __inline__ unsigned long cheetah_get_litlb_data(int entry)
{
	unsigned long data;

	__asm__ __volatile__("ldxa	[%1] %2, %%g0\n\t"
			     "ldxa	[%1] %2, %0"
			     : "=r" (data)
			     : "r" ((0 << 16) | (entry << 3)),
			     "i" (ASI_ITLB_DATA_ACCESS));

	return data;
}

static __inline__ unsigned long cheetah_get_ldtlb_tag(int entry)
{
	unsigned long tag;

	__asm__ __volatile__("ldxa	[%1] %2, %0"
			     : "=r" (tag)
			     : "r" ((0 << 16) | (entry << 3)),
			     "i" (ASI_DTLB_TAG_READ));

	return tag;
}

static __inline__ unsigned long cheetah_get_litlb_tag(int entry)
{
	unsigned long tag;

	__asm__ __volatile__("ldxa	[%1] %2, %0"
			     : "=r" (tag)
			     : "r" ((0 << 16) | (entry << 3)),
			     "i" (ASI_ITLB_TAG_READ));

	return tag;
}

static __inline__ void cheetah_put_ldtlb_data(int entry, unsigned long data)
{
	__asm__ __volatile__("stxa	%0, [%1] %2\n\t"
			     "membar	#Sync"
			     : /* No outputs */
			     : "r" (data),
			       "r" ((0 << 16) | (entry << 3)),
			       "i" (ASI_DTLB_DATA_ACCESS));
}

static __inline__ void cheetah_put_litlb_data(int entry, unsigned long data)
{
	__asm__ __volatile__("stxa	%0, [%1] %2\n\t"
			     "membar	#Sync"
			     : /* No outputs */
			     : "r" (data),
			       "r" ((0 << 16) | (entry << 3)),
			       "i" (ASI_ITLB_DATA_ACCESS));
}

static __inline__ unsigned long cheetah_get_dtlb_data(int entry, int tlb)
{
	unsigned long data;

	__asm__ __volatile__("ldxa	[%1] %2, %%g0\n\t"
			     "ldxa	[%1] %2, %0"
			     : "=r" (data)
			     : "r" ((tlb << 16) | (entry << 3)), "i" (ASI_DTLB_DATA_ACCESS));

	return data;
}

static __inline__ unsigned long cheetah_get_dtlb_tag(int entry, int tlb)
{
	unsigned long tag;

	__asm__ __volatile__("ldxa	[%1] %2, %0"
			     : "=r" (tag)
			     : "r" ((tlb << 16) | (entry << 3)), "i" (ASI_DTLB_TAG_READ));
	return tag;
}

static __inline__ void cheetah_put_dtlb_data(int entry, unsigned long data, int tlb)
{
	__asm__ __volatile__("stxa	%0, [%1] %2\n\t"
			     "membar	#Sync"
			     : /* No outputs */
			     : "r" (data),
			       "r" ((tlb << 16) | (entry << 3)),
			       "i" (ASI_DTLB_DATA_ACCESS));
}

static __inline__ unsigned long cheetah_get_itlb_data(int entry)
{
	unsigned long data;

	__asm__ __volatile__("ldxa	[%1] %2, %%g0\n\t"
			     "ldxa	[%1] %2, %0"
			     : "=r" (data)
			     : "r" ((2 << 16) | (entry << 3)),
                               "i" (ASI_ITLB_DATA_ACCESS));

	return data;
}

static __inline__ unsigned long cheetah_get_itlb_tag(int entry)
{
	unsigned long tag;

	__asm__ __volatile__("ldxa	[%1] %2, %0"
			     : "=r" (tag)
			     : "r" ((2 << 16) | (entry << 3)), "i" (ASI_ITLB_TAG_READ));
	return tag;
}

static __inline__ void cheetah_put_itlb_data(int entry, unsigned long data)
{
	__asm__ __volatile__("stxa	%0, [%1] %2\n\t"
			     "membar	#Sync"
			     : /* No outputs */
			     : "r" (data), "r" ((2 << 16) | (entry << 3)),
			       "i" (ASI_ITLB_DATA_ACCESS));
}

#endif /* !(__ASSEMBLY__) */

#endif /* !(_SPARC64_SPITFIRE_H) */
OpenPOWER on IntegriCloud