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a00736e9 SR |
1 | /* spitfire.h: SpitFire/BlackBird/Cheetah inline MMU operations. |
2 | * | |
3 | * Copyright (C) 1996 David S. Miller (davem@davemloft.net) | |
4 | */ | |
5 | ||
6 | #ifndef _SPARC64_SPITFIRE_H | |
7 | #define _SPARC64_SPITFIRE_H | |
8 | ||
d34dd829 SR |
9 | #ifdef CONFIG_SPARC64 |
10 | ||
a00736e9 SR |
11 | #include <asm/asi.h> |
12 | ||
13 | /* The following register addresses are accessible via ASI_DMMU | |
14 | * and ASI_IMMU, that is there is a distinct and unique copy of | |
15 | * each these registers for each TLB. | |
16 | */ | |
17 | #define TSB_TAG_TARGET 0x0000000000000000 /* All chips */ | |
18 | #define TLB_SFSR 0x0000000000000018 /* All chips */ | |
19 | #define TSB_REG 0x0000000000000028 /* All chips */ | |
20 | #define TLB_TAG_ACCESS 0x0000000000000030 /* All chips */ | |
21 | #define VIRT_WATCHPOINT 0x0000000000000038 /* All chips */ | |
22 | #define PHYS_WATCHPOINT 0x0000000000000040 /* All chips */ | |
23 | #define TSB_EXTENSION_P 0x0000000000000048 /* Ultra-III and later */ | |
24 | #define TSB_EXTENSION_S 0x0000000000000050 /* Ultra-III and later, D-TLB only */ | |
25 | #define TSB_EXTENSION_N 0x0000000000000058 /* Ultra-III and later */ | |
26 | #define TLB_TAG_ACCESS_EXT 0x0000000000000060 /* Ultra-III+ and later */ | |
27 | ||
28 | /* These registers only exist as one entity, and are accessed | |
29 | * via ASI_DMMU only. | |
30 | */ | |
31 | #define PRIMARY_CONTEXT 0x0000000000000008 | |
32 | #define SECONDARY_CONTEXT 0x0000000000000010 | |
33 | #define DMMU_SFAR 0x0000000000000020 | |
34 | #define VIRT_WATCHPOINT 0x0000000000000038 | |
35 | #define PHYS_WATCHPOINT 0x0000000000000040 | |
36 | ||
37 | #define SPITFIRE_HIGHEST_LOCKED_TLBENT (64 - 1) | |
38 | #define CHEETAH_HIGHEST_LOCKED_TLBENT (16 - 1) | |
39 | ||
40 | #define L1DCACHE_SIZE 0x4000 | |
41 | ||
42 | #define SUN4V_CHIP_INVALID 0x00 | |
43 | #define SUN4V_CHIP_NIAGARA1 0x01 | |
44 | #define SUN4V_CHIP_NIAGARA2 0x02 | |
15e3608d | 45 | #define SUN4V_CHIP_NIAGARA3 0x03 |
08cefa9f DM |
46 | #define SUN4V_CHIP_NIAGARA4 0x04 |
47 | #define SUN4V_CHIP_NIAGARA5 0x05 | |
cadbb580 AP |
48 | #define SUN4V_CHIP_SPARC_M6 0x06 |
49 | #define SUN4V_CHIP_SPARC_M7 0x07 | |
7d484acb | 50 | #define SUN4V_CHIP_SPARC_M8 0x08 |
76950e6e | 51 | #define SUN4V_CHIP_SPARC64X 0x8a |
c5b8b5be | 52 | #define SUN4V_CHIP_SPARC_SN 0x8b |
a00736e9 SR |
53 | #define SUN4V_CHIP_UNKNOWN 0xff |
54 | ||
9e48cd4a AP |
55 | /* |
56 | * The following CPU_ID_xxx constants are used | |
57 | * to identify the CPU type in the setup phase | |
58 | * (see head_64.S) | |
59 | */ | |
60 | #define CPU_ID_NIAGARA1 ('1') | |
61 | #define CPU_ID_NIAGARA2 ('2') | |
62 | #define CPU_ID_NIAGARA3 ('3') | |
63 | #define CPU_ID_NIAGARA4 ('4') | |
64 | #define CPU_ID_NIAGARA5 ('5') | |
65 | #define CPU_ID_M6 ('6') | |
66 | #define CPU_ID_M7 ('7') | |
7d484acb | 67 | #define CPU_ID_M8 ('8') |
9e48cd4a AP |
68 | #define CPU_ID_SONOMA1 ('N') |
69 | ||
a00736e9 SR |
70 | #ifndef __ASSEMBLY__ |
71 | ||
72 | enum ultra_tlb_layout { | |
73 | spitfire = 0, | |
74 | cheetah = 1, | |
75 | cheetah_plus = 2, | |
76 | hypervisor = 3, | |
77 | }; | |
78 | ||
79 | extern enum ultra_tlb_layout tlb_type; | |
80 | ||
81 | extern int sun4v_chip_type; | |
82 | ||
83 | extern int cheetah_pcache_forced_on; | |
f05a6865 | 84 | void cheetah_enable_pcache(void); |
a00736e9 SR |
85 | |
86 | #define sparc64_highest_locked_tlbent() \ | |
87 | (tlb_type == spitfire ? \ | |
88 | SPITFIRE_HIGHEST_LOCKED_TLBENT : \ | |
89 | CHEETAH_HIGHEST_LOCKED_TLBENT) | |
90 | ||
91 | extern int num_kernel_image_mappings; | |
92 | ||
93 | /* The data cache is write through, so this just invalidates the | |
94 | * specified line. | |
95 | */ | |
96 | static inline void spitfire_put_dcache_tag(unsigned long addr, unsigned long tag) | |
97 | { | |
98 | __asm__ __volatile__("stxa %0, [%1] %2\n\t" | |
99 | "membar #Sync" | |
100 | : /* No outputs */ | |
101 | : "r" (tag), "r" (addr), "i" (ASI_DCACHE_TAG)); | |
102 | } | |
103 | ||
104 | /* The instruction cache lines are flushed with this, but note that | |
105 | * this does not flush the pipeline. It is possible for a line to | |
106 | * get flushed but stale instructions to still be in the pipeline, | |
107 | * a flush instruction (to any address) is sufficient to handle | |
108 | * this issue after the line is invalidated. | |
109 | */ | |
110 | static inline void spitfire_put_icache_tag(unsigned long addr, unsigned long tag) | |
111 | { | |
112 | __asm__ __volatile__("stxa %0, [%1] %2\n\t" | |
113 | "membar #Sync" | |
114 | : /* No outputs */ | |
115 | : "r" (tag), "r" (addr), "i" (ASI_IC_TAG)); | |
116 | } | |
117 | ||
118 | static inline unsigned long spitfire_get_dtlb_data(int entry) | |
119 | { | |
120 | unsigned long data; | |
121 | ||
122 | __asm__ __volatile__("ldxa [%1] %2, %0" | |
123 | : "=r" (data) | |
124 | : "r" (entry << 3), "i" (ASI_DTLB_DATA_ACCESS)); | |
125 | ||
126 | /* Clear TTE diag bits. */ | |
127 | data &= ~0x0003fe0000000000UL; | |
128 | ||
129 | return data; | |
130 | } | |
131 | ||
132 | static inline unsigned long spitfire_get_dtlb_tag(int entry) | |
133 | { | |
134 | unsigned long tag; | |
135 | ||
136 | __asm__ __volatile__("ldxa [%1] %2, %0" | |
137 | : "=r" (tag) | |
138 | : "r" (entry << 3), "i" (ASI_DTLB_TAG_READ)); | |
139 | return tag; | |
140 | } | |
141 | ||
142 | static inline void spitfire_put_dtlb_data(int entry, unsigned long data) | |
143 | { | |
144 | __asm__ __volatile__("stxa %0, [%1] %2\n\t" | |
145 | "membar #Sync" | |
146 | : /* No outputs */ | |
147 | : "r" (data), "r" (entry << 3), | |
148 | "i" (ASI_DTLB_DATA_ACCESS)); | |
149 | } | |
150 | ||
151 | static inline unsigned long spitfire_get_itlb_data(int entry) | |
152 | { | |
153 | unsigned long data; | |
154 | ||
155 | __asm__ __volatile__("ldxa [%1] %2, %0" | |
156 | : "=r" (data) | |
157 | : "r" (entry << 3), "i" (ASI_ITLB_DATA_ACCESS)); | |
158 | ||
159 | /* Clear TTE diag bits. */ | |
160 | data &= ~0x0003fe0000000000UL; | |
161 | ||
162 | return data; | |
163 | } | |
164 | ||
165 | static inline unsigned long spitfire_get_itlb_tag(int entry) | |
166 | { | |
167 | unsigned long tag; | |
168 | ||
169 | __asm__ __volatile__("ldxa [%1] %2, %0" | |
170 | : "=r" (tag) | |
171 | : "r" (entry << 3), "i" (ASI_ITLB_TAG_READ)); | |
172 | return tag; | |
173 | } | |
174 | ||
175 | static inline void spitfire_put_itlb_data(int entry, unsigned long data) | |
176 | { | |
177 | __asm__ __volatile__("stxa %0, [%1] %2\n\t" | |
178 | "membar #Sync" | |
179 | : /* No outputs */ | |
180 | : "r" (data), "r" (entry << 3), | |
181 | "i" (ASI_ITLB_DATA_ACCESS)); | |
182 | } | |
183 | ||
184 | static inline void spitfire_flush_dtlb_nucleus_page(unsigned long page) | |
185 | { | |
186 | __asm__ __volatile__("stxa %%g0, [%0] %1\n\t" | |
187 | "membar #Sync" | |
188 | : /* No outputs */ | |
189 | : "r" (page | 0x20), "i" (ASI_DMMU_DEMAP)); | |
190 | } | |
191 | ||
192 | static inline void spitfire_flush_itlb_nucleus_page(unsigned long page) | |
193 | { | |
194 | __asm__ __volatile__("stxa %%g0, [%0] %1\n\t" | |
195 | "membar #Sync" | |
196 | : /* No outputs */ | |
197 | : "r" (page | 0x20), "i" (ASI_IMMU_DEMAP)); | |
198 | } | |
199 | ||
200 | /* Cheetah has "all non-locked" tlb flushes. */ | |
201 | static inline void cheetah_flush_dtlb_all(void) | |
202 | { | |
203 | __asm__ __volatile__("stxa %%g0, [%0] %1\n\t" | |
204 | "membar #Sync" | |
205 | : /* No outputs */ | |
206 | : "r" (0x80), "i" (ASI_DMMU_DEMAP)); | |
207 | } | |
208 | ||
209 | static inline void cheetah_flush_itlb_all(void) | |
210 | { | |
211 | __asm__ __volatile__("stxa %%g0, [%0] %1\n\t" | |
212 | "membar #Sync" | |
213 | : /* No outputs */ | |
214 | : "r" (0x80), "i" (ASI_IMMU_DEMAP)); | |
215 | } | |
216 | ||
217 | /* Cheetah has a 4-tlb layout so direct access is a bit different. | |
218 | * The first two TLBs are fully assosciative, hold 16 entries, and are | |
219 | * used only for locked and >8K sized translations. One exists for | |
220 | * data accesses and one for instruction accesses. | |
221 | * | |
222 | * The third TLB is for data accesses to 8K non-locked translations, is | |
223 | * 2 way assosciative, and holds 512 entries. The fourth TLB is for | |
224 | * instruction accesses to 8K non-locked translations, is 2 way | |
225 | * assosciative, and holds 128 entries. | |
226 | * | |
227 | * Cheetah has some bug where bogus data can be returned from | |
228 | * ASI_{D,I}TLB_DATA_ACCESS loads, doing the load twice fixes | |
229 | * the problem for me. -DaveM | |
230 | */ | |
231 | static inline unsigned long cheetah_get_ldtlb_data(int entry) | |
232 | { | |
233 | unsigned long data; | |
234 | ||
235 | __asm__ __volatile__("ldxa [%1] %2, %%g0\n\t" | |
236 | "ldxa [%1] %2, %0" | |
237 | : "=r" (data) | |
238 | : "r" ((0 << 16) | (entry << 3)), | |
239 | "i" (ASI_DTLB_DATA_ACCESS)); | |
240 | ||
241 | return data; | |
242 | } | |
243 | ||
244 | static inline unsigned long cheetah_get_litlb_data(int entry) | |
245 | { | |
246 | unsigned long data; | |
247 | ||
248 | __asm__ __volatile__("ldxa [%1] %2, %%g0\n\t" | |
249 | "ldxa [%1] %2, %0" | |
250 | : "=r" (data) | |
251 | : "r" ((0 << 16) | (entry << 3)), | |
252 | "i" (ASI_ITLB_DATA_ACCESS)); | |
253 | ||
254 | return data; | |
255 | } | |
256 | ||
257 | static inline unsigned long cheetah_get_ldtlb_tag(int entry) | |
258 | { | |
259 | unsigned long tag; | |
260 | ||
261 | __asm__ __volatile__("ldxa [%1] %2, %0" | |
262 | : "=r" (tag) | |
263 | : "r" ((0 << 16) | (entry << 3)), | |
264 | "i" (ASI_DTLB_TAG_READ)); | |
265 | ||
266 | return tag; | |
267 | } | |
268 | ||
269 | static inline unsigned long cheetah_get_litlb_tag(int entry) | |
270 | { | |
271 | unsigned long tag; | |
272 | ||
273 | __asm__ __volatile__("ldxa [%1] %2, %0" | |
274 | : "=r" (tag) | |
275 | : "r" ((0 << 16) | (entry << 3)), | |
276 | "i" (ASI_ITLB_TAG_READ)); | |
277 | ||
278 | return tag; | |
279 | } | |
280 | ||
281 | static inline void cheetah_put_ldtlb_data(int entry, unsigned long data) | |
282 | { | |
283 | __asm__ __volatile__("stxa %0, [%1] %2\n\t" | |
284 | "membar #Sync" | |
285 | : /* No outputs */ | |
286 | : "r" (data), | |
287 | "r" ((0 << 16) | (entry << 3)), | |
288 | "i" (ASI_DTLB_DATA_ACCESS)); | |
289 | } | |
290 | ||
291 | static inline void cheetah_put_litlb_data(int entry, unsigned long data) | |
292 | { | |
293 | __asm__ __volatile__("stxa %0, [%1] %2\n\t" | |
294 | "membar #Sync" | |
295 | : /* No outputs */ | |
296 | : "r" (data), | |
297 | "r" ((0 << 16) | (entry << 3)), | |
298 | "i" (ASI_ITLB_DATA_ACCESS)); | |
299 | } | |
300 | ||
301 | static inline unsigned long cheetah_get_dtlb_data(int entry, int tlb) | |
302 | { | |
303 | unsigned long data; | |
304 | ||
305 | __asm__ __volatile__("ldxa [%1] %2, %%g0\n\t" | |
306 | "ldxa [%1] %2, %0" | |
307 | : "=r" (data) | |
308 | : "r" ((tlb << 16) | (entry << 3)), "i" (ASI_DTLB_DATA_ACCESS)); | |
309 | ||
310 | return data; | |
311 | } | |
312 | ||
313 | static inline unsigned long cheetah_get_dtlb_tag(int entry, int tlb) | |
314 | { | |
315 | unsigned long tag; | |
316 | ||
317 | __asm__ __volatile__("ldxa [%1] %2, %0" | |
318 | : "=r" (tag) | |
319 | : "r" ((tlb << 16) | (entry << 3)), "i" (ASI_DTLB_TAG_READ)); | |
320 | return tag; | |
321 | } | |
322 | ||
323 | static inline void cheetah_put_dtlb_data(int entry, unsigned long data, int tlb) | |
324 | { | |
325 | __asm__ __volatile__("stxa %0, [%1] %2\n\t" | |
326 | "membar #Sync" | |
327 | : /* No outputs */ | |
328 | : "r" (data), | |
329 | "r" ((tlb << 16) | (entry << 3)), | |
330 | "i" (ASI_DTLB_DATA_ACCESS)); | |
331 | } | |
332 | ||
333 | static inline unsigned long cheetah_get_itlb_data(int entry) | |
334 | { | |
335 | unsigned long data; | |
336 | ||
337 | __asm__ __volatile__("ldxa [%1] %2, %%g0\n\t" | |
338 | "ldxa [%1] %2, %0" | |
339 | : "=r" (data) | |
340 | : "r" ((2 << 16) | (entry << 3)), | |
341 | "i" (ASI_ITLB_DATA_ACCESS)); | |
342 | ||
343 | return data; | |
344 | } | |
345 | ||
346 | static inline unsigned long cheetah_get_itlb_tag(int entry) | |
347 | { | |
348 | unsigned long tag; | |
349 | ||
350 | __asm__ __volatile__("ldxa [%1] %2, %0" | |
351 | : "=r" (tag) | |
352 | : "r" ((2 << 16) | (entry << 3)), "i" (ASI_ITLB_TAG_READ)); | |
353 | return tag; | |
354 | } | |
355 | ||
356 | static inline void cheetah_put_itlb_data(int entry, unsigned long data) | |
357 | { | |
358 | __asm__ __volatile__("stxa %0, [%1] %2\n\t" | |
359 | "membar #Sync" | |
360 | : /* No outputs */ | |
361 | : "r" (data), "r" ((2 << 16) | (entry << 3)), | |
362 | "i" (ASI_ITLB_DATA_ACCESS)); | |
363 | } | |
364 | ||
365 | #endif /* !(__ASSEMBLY__) */ | |
d34dd829 | 366 | #endif /* CONFIG_SPARC64 */ |
a00736e9 | 367 | #endif /* !(_SPARC64_SPITFIRE_H) */ |