x86/efi: Enforce CONFIG_RELOCATABLE for EFI boot stub
[linux/fpc-iii.git] / arch / sparc / include / asm / spitfire.h
blob6b67e50fb9b4cf934dade73c9d10dfeec6afe364
1 /* spitfire.h: SpitFire/BlackBird/Cheetah inline MMU operations.
3 * Copyright (C) 1996 David S. Miller (davem@davemloft.net)
4 */
6 #ifndef _SPARC64_SPITFIRE_H
7 #define _SPARC64_SPITFIRE_H
9 #ifdef CONFIG_SPARC64
11 #include <asm/asi.h>
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.
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 */
28 /* These registers only exist as one entity, and are accessed
29 * via ASI_DMMU only.
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
37 #define SPITFIRE_HIGHEST_LOCKED_TLBENT (64 - 1)
38 #define CHEETAH_HIGHEST_LOCKED_TLBENT (16 - 1)
40 #define L1DCACHE_SIZE 0x4000
42 #define SUN4V_CHIP_INVALID 0x00
43 #define SUN4V_CHIP_NIAGARA1 0x01
44 #define SUN4V_CHIP_NIAGARA2 0x02
45 #define SUN4V_CHIP_NIAGARA3 0x03
46 #define SUN4V_CHIP_NIAGARA4 0x04
47 #define SUN4V_CHIP_NIAGARA5 0x05
48 #define SUN4V_CHIP_SPARC64X 0x8a
49 #define SUN4V_CHIP_UNKNOWN 0xff
51 #ifndef __ASSEMBLY__
53 enum ultra_tlb_layout {
54 spitfire = 0,
55 cheetah = 1,
56 cheetah_plus = 2,
57 hypervisor = 3,
60 extern enum ultra_tlb_layout tlb_type;
62 extern int sun4v_chip_type;
64 extern int cheetah_pcache_forced_on;
65 extern void cheetah_enable_pcache(void);
67 #define sparc64_highest_locked_tlbent() \
68 (tlb_type == spitfire ? \
69 SPITFIRE_HIGHEST_LOCKED_TLBENT : \
70 CHEETAH_HIGHEST_LOCKED_TLBENT)
72 extern int num_kernel_image_mappings;
74 /* The data cache is write through, so this just invalidates the
75 * specified line.
77 static inline void spitfire_put_dcache_tag(unsigned long addr, unsigned long tag)
79 __asm__ __volatile__("stxa %0, [%1] %2\n\t"
80 "membar #Sync"
81 : /* No outputs */
82 : "r" (tag), "r" (addr), "i" (ASI_DCACHE_TAG));
85 /* The instruction cache lines are flushed with this, but note that
86 * this does not flush the pipeline. It is possible for a line to
87 * get flushed but stale instructions to still be in the pipeline,
88 * a flush instruction (to any address) is sufficient to handle
89 * this issue after the line is invalidated.
91 static inline void spitfire_put_icache_tag(unsigned long addr, unsigned long tag)
93 __asm__ __volatile__("stxa %0, [%1] %2\n\t"
94 "membar #Sync"
95 : /* No outputs */
96 : "r" (tag), "r" (addr), "i" (ASI_IC_TAG));
99 static inline unsigned long spitfire_get_dtlb_data(int entry)
101 unsigned long data;
103 __asm__ __volatile__("ldxa [%1] %2, %0"
104 : "=r" (data)
105 : "r" (entry << 3), "i" (ASI_DTLB_DATA_ACCESS));
107 /* Clear TTE diag bits. */
108 data &= ~0x0003fe0000000000UL;
110 return data;
113 static inline unsigned long spitfire_get_dtlb_tag(int entry)
115 unsigned long tag;
117 __asm__ __volatile__("ldxa [%1] %2, %0"
118 : "=r" (tag)
119 : "r" (entry << 3), "i" (ASI_DTLB_TAG_READ));
120 return tag;
123 static inline void spitfire_put_dtlb_data(int entry, unsigned long data)
125 __asm__ __volatile__("stxa %0, [%1] %2\n\t"
126 "membar #Sync"
127 : /* No outputs */
128 : "r" (data), "r" (entry << 3),
129 "i" (ASI_DTLB_DATA_ACCESS));
132 static inline unsigned long spitfire_get_itlb_data(int entry)
134 unsigned long data;
136 __asm__ __volatile__("ldxa [%1] %2, %0"
137 : "=r" (data)
138 : "r" (entry << 3), "i" (ASI_ITLB_DATA_ACCESS));
140 /* Clear TTE diag bits. */
141 data &= ~0x0003fe0000000000UL;
143 return data;
146 static inline unsigned long spitfire_get_itlb_tag(int entry)
148 unsigned long tag;
150 __asm__ __volatile__("ldxa [%1] %2, %0"
151 : "=r" (tag)
152 : "r" (entry << 3), "i" (ASI_ITLB_TAG_READ));
153 return tag;
156 static inline void spitfire_put_itlb_data(int entry, unsigned long data)
158 __asm__ __volatile__("stxa %0, [%1] %2\n\t"
159 "membar #Sync"
160 : /* No outputs */
161 : "r" (data), "r" (entry << 3),
162 "i" (ASI_ITLB_DATA_ACCESS));
165 static inline void spitfire_flush_dtlb_nucleus_page(unsigned long page)
167 __asm__ __volatile__("stxa %%g0, [%0] %1\n\t"
168 "membar #Sync"
169 : /* No outputs */
170 : "r" (page | 0x20), "i" (ASI_DMMU_DEMAP));
173 static inline void spitfire_flush_itlb_nucleus_page(unsigned long page)
175 __asm__ __volatile__("stxa %%g0, [%0] %1\n\t"
176 "membar #Sync"
177 : /* No outputs */
178 : "r" (page | 0x20), "i" (ASI_IMMU_DEMAP));
181 /* Cheetah has "all non-locked" tlb flushes. */
182 static inline void cheetah_flush_dtlb_all(void)
184 __asm__ __volatile__("stxa %%g0, [%0] %1\n\t"
185 "membar #Sync"
186 : /* No outputs */
187 : "r" (0x80), "i" (ASI_DMMU_DEMAP));
190 static inline void cheetah_flush_itlb_all(void)
192 __asm__ __volatile__("stxa %%g0, [%0] %1\n\t"
193 "membar #Sync"
194 : /* No outputs */
195 : "r" (0x80), "i" (ASI_IMMU_DEMAP));
198 /* Cheetah has a 4-tlb layout so direct access is a bit different.
199 * The first two TLBs are fully assosciative, hold 16 entries, and are
200 * used only for locked and >8K sized translations. One exists for
201 * data accesses and one for instruction accesses.
203 * The third TLB is for data accesses to 8K non-locked translations, is
204 * 2 way assosciative, and holds 512 entries. The fourth TLB is for
205 * instruction accesses to 8K non-locked translations, is 2 way
206 * assosciative, and holds 128 entries.
208 * Cheetah has some bug where bogus data can be returned from
209 * ASI_{D,I}TLB_DATA_ACCESS loads, doing the load twice fixes
210 * the problem for me. -DaveM
212 static inline unsigned long cheetah_get_ldtlb_data(int entry)
214 unsigned long data;
216 __asm__ __volatile__("ldxa [%1] %2, %%g0\n\t"
217 "ldxa [%1] %2, %0"
218 : "=r" (data)
219 : "r" ((0 << 16) | (entry << 3)),
220 "i" (ASI_DTLB_DATA_ACCESS));
222 return data;
225 static inline unsigned long cheetah_get_litlb_data(int entry)
227 unsigned long data;
229 __asm__ __volatile__("ldxa [%1] %2, %%g0\n\t"
230 "ldxa [%1] %2, %0"
231 : "=r" (data)
232 : "r" ((0 << 16) | (entry << 3)),
233 "i" (ASI_ITLB_DATA_ACCESS));
235 return data;
238 static inline unsigned long cheetah_get_ldtlb_tag(int entry)
240 unsigned long tag;
242 __asm__ __volatile__("ldxa [%1] %2, %0"
243 : "=r" (tag)
244 : "r" ((0 << 16) | (entry << 3)),
245 "i" (ASI_DTLB_TAG_READ));
247 return tag;
250 static inline unsigned long cheetah_get_litlb_tag(int entry)
252 unsigned long tag;
254 __asm__ __volatile__("ldxa [%1] %2, %0"
255 : "=r" (tag)
256 : "r" ((0 << 16) | (entry << 3)),
257 "i" (ASI_ITLB_TAG_READ));
259 return tag;
262 static inline void cheetah_put_ldtlb_data(int entry, unsigned long data)
264 __asm__ __volatile__("stxa %0, [%1] %2\n\t"
265 "membar #Sync"
266 : /* No outputs */
267 : "r" (data),
268 "r" ((0 << 16) | (entry << 3)),
269 "i" (ASI_DTLB_DATA_ACCESS));
272 static inline void cheetah_put_litlb_data(int entry, unsigned long data)
274 __asm__ __volatile__("stxa %0, [%1] %2\n\t"
275 "membar #Sync"
276 : /* No outputs */
277 : "r" (data),
278 "r" ((0 << 16) | (entry << 3)),
279 "i" (ASI_ITLB_DATA_ACCESS));
282 static inline unsigned long cheetah_get_dtlb_data(int entry, int tlb)
284 unsigned long data;
286 __asm__ __volatile__("ldxa [%1] %2, %%g0\n\t"
287 "ldxa [%1] %2, %0"
288 : "=r" (data)
289 : "r" ((tlb << 16) | (entry << 3)), "i" (ASI_DTLB_DATA_ACCESS));
291 return data;
294 static inline unsigned long cheetah_get_dtlb_tag(int entry, int tlb)
296 unsigned long tag;
298 __asm__ __volatile__("ldxa [%1] %2, %0"
299 : "=r" (tag)
300 : "r" ((tlb << 16) | (entry << 3)), "i" (ASI_DTLB_TAG_READ));
301 return tag;
304 static inline void cheetah_put_dtlb_data(int entry, unsigned long data, int tlb)
306 __asm__ __volatile__("stxa %0, [%1] %2\n\t"
307 "membar #Sync"
308 : /* No outputs */
309 : "r" (data),
310 "r" ((tlb << 16) | (entry << 3)),
311 "i" (ASI_DTLB_DATA_ACCESS));
314 static inline unsigned long cheetah_get_itlb_data(int entry)
316 unsigned long data;
318 __asm__ __volatile__("ldxa [%1] %2, %%g0\n\t"
319 "ldxa [%1] %2, %0"
320 : "=r" (data)
321 : "r" ((2 << 16) | (entry << 3)),
322 "i" (ASI_ITLB_DATA_ACCESS));
324 return data;
327 static inline unsigned long cheetah_get_itlb_tag(int entry)
329 unsigned long tag;
331 __asm__ __volatile__("ldxa [%1] %2, %0"
332 : "=r" (tag)
333 : "r" ((2 << 16) | (entry << 3)), "i" (ASI_ITLB_TAG_READ));
334 return tag;
337 static inline void cheetah_put_itlb_data(int entry, unsigned long data)
339 __asm__ __volatile__("stxa %0, [%1] %2\n\t"
340 "membar #Sync"
341 : /* No outputs */
342 : "r" (data), "r" ((2 << 16) | (entry << 3)),
343 "i" (ASI_ITLB_DATA_ACCESS));
346 #endif /* !(__ASSEMBLY__) */
347 #endif /* CONFIG_SPARC64 */
348 #endif /* !(_SPARC64_SPITFIRE_H) */