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1da177e4 LT |
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) 2003, 2004 Ralf Baechle | |
4194318c | 7 | * Copyright (C) 2004 Maciej W. Rozycki |
1da177e4 LT |
8 | */ |
9 | #ifndef __ASM_CPU_FEATURES_H | |
10 | #define __ASM_CPU_FEATURES_H | |
11 | ||
1da177e4 LT |
12 | #include <asm/cpu.h> |
13 | #include <asm/cpu-info.h> | |
14 | #include <cpu-feature-overrides.h> | |
15 | ||
10cc3529 | 16 | #ifndef current_cpu_type |
70342287 | 17 | #define current_cpu_type() current_cpu_data.cputype |
10cc3529 RB |
18 | #endif |
19 | ||
1da177e4 LT |
20 | /* |
21 | * SMP assumption: Options of CPU 0 are a superset of all processors. | |
22 | * This is true for all known MIPS systems. | |
23 | */ | |
24 | #ifndef cpu_has_tlb | |
25 | #define cpu_has_tlb (cpu_data[0].options & MIPS_CPU_TLB) | |
26 | #endif | |
1990e542 RB |
27 | |
28 | /* | |
29 | * For the moment we don't consider R6000 and R8000 so we can assume that | |
30 | * anything that doesn't support R4000-style exceptions and interrupts is | |
31 | * R3000-like. Users should still treat these two macro definitions as | |
32 | * opaque. | |
33 | */ | |
34 | #ifndef cpu_has_3kex | |
35 | #define cpu_has_3kex (!cpu_has_4kex) | |
36 | #endif | |
1da177e4 LT |
37 | #ifndef cpu_has_4kex |
38 | #define cpu_has_4kex (cpu_data[0].options & MIPS_CPU_4KEX) | |
39 | #endif | |
02cf2119 RB |
40 | #ifndef cpu_has_3k_cache |
41 | #define cpu_has_3k_cache (cpu_data[0].options & MIPS_CPU_3K_CACHE) | |
42 | #endif | |
43 | #define cpu_has_6k_cache 0 | |
44 | #define cpu_has_8k_cache 0 | |
45 | #ifndef cpu_has_4k_cache | |
46 | #define cpu_has_4k_cache (cpu_data[0].options & MIPS_CPU_4K_CACHE) | |
47 | #endif | |
48 | #ifndef cpu_has_tx39_cache | |
49 | #define cpu_has_tx39_cache (cpu_data[0].options & MIPS_CPU_TX39_CACHE) | |
50 | #endif | |
47d979ec DD |
51 | #ifndef cpu_has_octeon_cache |
52 | #define cpu_has_octeon_cache 0 | |
53 | #endif | |
1da177e4 | 54 | #ifndef cpu_has_fpu |
f088fc84 | 55 | #define cpu_has_fpu (current_cpu_data.options & MIPS_CPU_FPU) |
53dc8028 AN |
56 | #define raw_cpu_has_fpu (raw_current_cpu_data.options & MIPS_CPU_FPU) |
57 | #else | |
58 | #define raw_cpu_has_fpu cpu_has_fpu | |
1da177e4 LT |
59 | #endif |
60 | #ifndef cpu_has_32fpr | |
61 | #define cpu_has_32fpr (cpu_data[0].options & MIPS_CPU_32FPR) | |
62 | #endif | |
63 | #ifndef cpu_has_counter | |
64 | #define cpu_has_counter (cpu_data[0].options & MIPS_CPU_COUNTER) | |
65 | #endif | |
66 | #ifndef cpu_has_watch | |
67 | #define cpu_has_watch (cpu_data[0].options & MIPS_CPU_WATCH) | |
68 | #endif | |
1da177e4 LT |
69 | #ifndef cpu_has_divec |
70 | #define cpu_has_divec (cpu_data[0].options & MIPS_CPU_DIVEC) | |
71 | #endif | |
72 | #ifndef cpu_has_vce | |
73 | #define cpu_has_vce (cpu_data[0].options & MIPS_CPU_VCE) | |
74 | #endif | |
75 | #ifndef cpu_has_cache_cdex_p | |
76 | #define cpu_has_cache_cdex_p (cpu_data[0].options & MIPS_CPU_CACHE_CDEX_P) | |
77 | #endif | |
78 | #ifndef cpu_has_cache_cdex_s | |
79 | #define cpu_has_cache_cdex_s (cpu_data[0].options & MIPS_CPU_CACHE_CDEX_S) | |
80 | #endif | |
81 | #ifndef cpu_has_prefetch | |
82 | #define cpu_has_prefetch (cpu_data[0].options & MIPS_CPU_PREFETCH) | |
83 | #endif | |
84 | #ifndef cpu_has_mcheck | |
85 | #define cpu_has_mcheck (cpu_data[0].options & MIPS_CPU_MCHECK) | |
86 | #endif | |
87 | #ifndef cpu_has_ejtag | |
88 | #define cpu_has_ejtag (cpu_data[0].options & MIPS_CPU_EJTAG) | |
89 | #endif | |
90 | #ifndef cpu_has_llsc | |
91 | #define cpu_has_llsc (cpu_data[0].options & MIPS_CPU_LLSC) | |
92 | #endif | |
b791d119 DD |
93 | #ifndef kernel_uses_llsc |
94 | #define kernel_uses_llsc cpu_has_llsc | |
95 | #endif | |
4194318c RB |
96 | #ifndef cpu_has_mips16 |
97 | #define cpu_has_mips16 (cpu_data[0].ases & MIPS_ASE_MIPS16) | |
98 | #endif | |
99 | #ifndef cpu_has_mdmx | |
70342287 | 100 | #define cpu_has_mdmx (cpu_data[0].ases & MIPS_ASE_MDMX) |
4194318c RB |
101 | #endif |
102 | #ifndef cpu_has_mips3d | |
70342287 | 103 | #define cpu_has_mips3d (cpu_data[0].ases & MIPS_ASE_MIPS3D) |
4194318c RB |
104 | #endif |
105 | #ifndef cpu_has_smartmips | |
106 | #define cpu_has_smartmips (cpu_data[0].ases & MIPS_ASE_SMARTMIPS) | |
107 | #endif | |
b2ab4f08 SH |
108 | #ifndef cpu_has_rixi |
109 | #define cpu_has_rixi (cpu_data[0].options & MIPS_CPU_RIXI) | |
110 | #endif | |
f8fa4811 | 111 | #ifndef cpu_has_mmips |
3ddc14ad DD |
112 | # ifdef CONFIG_SYS_SUPPORTS_MICROMIPS |
113 | # define cpu_has_mmips (cpu_data[0].options & MIPS_CPU_MICROMIPS) | |
114 | # else | |
115 | # define cpu_has_mmips 0 | |
116 | # endif | |
f8fa4811 | 117 | #endif |
1da177e4 LT |
118 | #ifndef cpu_has_vtag_icache |
119 | #define cpu_has_vtag_icache (cpu_data[0].icache.flags & MIPS_CACHE_VTAG) | |
120 | #endif | |
121 | #ifndef cpu_has_dc_aliases | |
122 | #define cpu_has_dc_aliases (cpu_data[0].dcache.flags & MIPS_CACHE_ALIASES) | |
123 | #endif | |
124 | #ifndef cpu_has_ic_fills_f_dc | |
125 | #define cpu_has_ic_fills_f_dc (cpu_data[0].icache.flags & MIPS_CACHE_IC_F_DC) | |
126 | #endif | |
de62893b | 127 | #ifndef cpu_has_pindexed_dcache |
70342287 | 128 | #define cpu_has_pindexed_dcache (cpu_data[0].dcache.flags & MIPS_CACHE_PINDEX) |
de62893b | 129 | #endif |
8759934e HC |
130 | #ifndef cpu_has_local_ebase |
131 | #define cpu_has_local_ebase 1 | |
132 | #endif | |
1da177e4 LT |
133 | |
134 | /* | |
70342287 | 135 | * I-Cache snoops remote store. This only matters on SMP. Some multiprocessors |
1da177e4 LT |
136 | * such as the R10000 have I-Caches that snoop local stores; the embedded ones |
137 | * don't. For maintaining I-cache coherency this means we need to flush the | |
138 | * D-cache all the way back to whever the I-cache does refills from, so the | |
139 | * I-cache has a chance to see the new data at all. Then we have to flush the | |
140 | * I-cache also. | |
141 | * Note we may have been rescheduled and may no longer be running on the CPU | |
142 | * that did the store so we can't optimize this into only doing the flush on | |
143 | * the local CPU. | |
144 | */ | |
145 | #ifndef cpu_icache_snoops_remote_store | |
146 | #ifdef CONFIG_SMP | |
147 | #define cpu_icache_snoops_remote_store (cpu_data[0].icache.flags & MIPS_IC_SNOOPS_REMOTE) | |
148 | #else | |
149 | #define cpu_icache_snoops_remote_store 1 | |
150 | #endif | |
151 | #endif | |
152 | ||
a96102be SH |
153 | #ifndef cpu_has_mips_2 |
154 | # define cpu_has_mips_2 (cpu_data[0].isa_level & MIPS_CPU_ISA_II) | |
155 | #endif | |
156 | #ifndef cpu_has_mips_3 | |
157 | # define cpu_has_mips_3 (cpu_data[0].isa_level & MIPS_CPU_ISA_III) | |
158 | #endif | |
159 | #ifndef cpu_has_mips_4 | |
160 | # define cpu_has_mips_4 (cpu_data[0].isa_level & MIPS_CPU_ISA_IV) | |
161 | #endif | |
162 | #ifndef cpu_has_mips_5 | |
163 | # define cpu_has_mips_5 (cpu_data[0].isa_level & MIPS_CPU_ISA_V) | |
164 | #endif | |
0401572a RB |
165 | # ifndef cpu_has_mips32r1 |
166 | # define cpu_has_mips32r1 (cpu_data[0].isa_level & MIPS_CPU_ISA_M32R1) | |
167 | # endif | |
168 | # ifndef cpu_has_mips32r2 | |
169 | # define cpu_has_mips32r2 (cpu_data[0].isa_level & MIPS_CPU_ISA_M32R2) | |
170 | # endif | |
171 | # ifndef cpu_has_mips64r1 | |
172 | # define cpu_has_mips64r1 (cpu_data[0].isa_level & MIPS_CPU_ISA_M64R1) | |
173 | # endif | |
174 | # ifndef cpu_has_mips64r2 | |
175 | # define cpu_has_mips64r2 (cpu_data[0].isa_level & MIPS_CPU_ISA_M64R2) | |
176 | # endif | |
177 | ||
178 | /* | |
179 | * Shortcuts ... | |
180 | */ | |
181 | #define cpu_has_mips32 (cpu_has_mips32r1 | cpu_has_mips32r2) | |
182 | #define cpu_has_mips64 (cpu_has_mips64r1 | cpu_has_mips64r2) | |
70342287 RB |
183 | #define cpu_has_mips_r1 (cpu_has_mips32r1 | cpu_has_mips64r1) |
184 | #define cpu_has_mips_r2 (cpu_has_mips32r2 | cpu_has_mips64r2) | |
c46b302b RB |
185 | #define cpu_has_mips_r (cpu_has_mips32r1 | cpu_has_mips32r2 | \ |
186 | cpu_has_mips64r1 | cpu_has_mips64r2) | |
0401572a | 187 | |
41f0e4d0 DD |
188 | #ifndef cpu_has_mips_r2_exec_hazard |
189 | #define cpu_has_mips_r2_exec_hazard cpu_has_mips_r2 | |
190 | #endif | |
191 | ||
47740eb8 RB |
192 | /* |
193 | * MIPS32, MIPS64, VR5500, IDT32332, IDT32334 and maybe a few other | |
70342287 | 194 | * pre-MIPS32/MIPS53 processors have CLO, CLZ. The IDT RC64574 is 64-bit and |
417a5eb0 | 195 | * has CLO and CLZ but not DCLO nor DCLZ. For 64-bit kernels |
47740eb8 RB |
196 | * cpu_has_clo_clz also indicates the availability of DCLO and DCLZ. |
197 | */ | |
198 | # ifndef cpu_has_clo_clz | |
199 | # define cpu_has_clo_clz cpu_has_mips_r | |
200 | # endif | |
201 | ||
e50c0a8f RB |
202 | #ifndef cpu_has_dsp |
203 | #define cpu_has_dsp (cpu_data[0].ases & MIPS_ASE_DSP) | |
204 | #endif | |
205 | ||
ee80f7c7 SH |
206 | #ifndef cpu_has_dsp2 |
207 | #define cpu_has_dsp2 (cpu_data[0].ases & MIPS_ASE_DSP2P) | |
208 | #endif | |
209 | ||
8f40611d | 210 | #ifndef cpu_has_mipsmt |
2e128ded | 211 | #define cpu_has_mipsmt (cpu_data[0].ases & MIPS_ASE_MIPSMT) |
8f40611d RB |
212 | #endif |
213 | ||
a3692020 RB |
214 | #ifndef cpu_has_userlocal |
215 | #define cpu_has_userlocal (cpu_data[0].options & MIPS_CPU_ULRI) | |
216 | #endif | |
217 | ||
875d43e7 | 218 | #ifdef CONFIG_32BIT |
1da177e4 LT |
219 | # ifndef cpu_has_nofpuex |
220 | # define cpu_has_nofpuex (cpu_data[0].options & MIPS_CPU_NOFPUEX) | |
221 | # endif | |
222 | # ifndef cpu_has_64bits | |
223 | # define cpu_has_64bits (cpu_data[0].isa_level & MIPS_CPU_ISA_64BIT) | |
224 | # endif | |
225 | # ifndef cpu_has_64bit_zero_reg | |
70342287 | 226 | # define cpu_has_64bit_zero_reg (cpu_data[0].isa_level & MIPS_CPU_ISA_64BIT) |
1da177e4 LT |
227 | # endif |
228 | # ifndef cpu_has_64bit_gp_regs | |
229 | # define cpu_has_64bit_gp_regs 0 | |
230 | # endif | |
231 | # ifndef cpu_has_64bit_addresses | |
232 | # define cpu_has_64bit_addresses 0 | |
233 | # endif | |
91dfc423 GR |
234 | # ifndef cpu_vmbits |
235 | # define cpu_vmbits 31 | |
236 | # endif | |
1da177e4 LT |
237 | #endif |
238 | ||
875d43e7 | 239 | #ifdef CONFIG_64BIT |
1da177e4 LT |
240 | # ifndef cpu_has_nofpuex |
241 | # define cpu_has_nofpuex 0 | |
242 | # endif | |
243 | # ifndef cpu_has_64bits | |
244 | # define cpu_has_64bits 1 | |
245 | # endif | |
246 | # ifndef cpu_has_64bit_zero_reg | |
247 | # define cpu_has_64bit_zero_reg 1 | |
248 | # endif | |
249 | # ifndef cpu_has_64bit_gp_regs | |
250 | # define cpu_has_64bit_gp_regs 1 | |
251 | # endif | |
252 | # ifndef cpu_has_64bit_addresses | |
253 | # define cpu_has_64bit_addresses 1 | |
254 | # endif | |
91dfc423 GR |
255 | # ifndef cpu_vmbits |
256 | # define cpu_vmbits cpu_data[0].vmbits | |
257 | # define __NEED_VMBITS_PROBE | |
258 | # endif | |
1da177e4 LT |
259 | #endif |
260 | ||
f41ae0b2 RB |
261 | #if defined(CONFIG_CPU_MIPSR2_IRQ_VI) && !defined(cpu_has_vint) |
262 | # define cpu_has_vint (cpu_data[0].options & MIPS_CPU_VINT) | |
263 | #elif !defined(cpu_has_vint) | |
8f40611d | 264 | # define cpu_has_vint 0 |
f41ae0b2 RB |
265 | #endif |
266 | ||
267 | #if defined(CONFIG_CPU_MIPSR2_IRQ_EI) && !defined(cpu_has_veic) | |
268 | # define cpu_has_veic (cpu_data[0].options & MIPS_CPU_VEIC) | |
269 | #elif !defined(cpu_has_veic) | |
8f40611d RB |
270 | # define cpu_has_veic 0 |
271 | #endif | |
272 | ||
fc5d2d27 RB |
273 | #ifndef cpu_has_inclusive_pcaches |
274 | #define cpu_has_inclusive_pcaches (cpu_data[0].options & MIPS_CPU_INCLUSIVE_CACHES) | |
1da177e4 LT |
275 | #endif |
276 | ||
277 | #ifndef cpu_dcache_line_size | |
54fd6441 | 278 | #define cpu_dcache_line_size() cpu_data[0].dcache.linesz |
1da177e4 LT |
279 | #endif |
280 | #ifndef cpu_icache_line_size | |
54fd6441 | 281 | #define cpu_icache_line_size() cpu_data[0].icache.linesz |
1da177e4 LT |
282 | #endif |
283 | #ifndef cpu_scache_line_size | |
54fd6441 | 284 | #define cpu_scache_line_size() cpu_data[0].scache.linesz |
1da177e4 LT |
285 | #endif |
286 | ||
fbeda19f DD |
287 | #ifndef cpu_hwrena_impl_bits |
288 | #define cpu_hwrena_impl_bits 0 | |
289 | #endif | |
290 | ||
da4b62cd AC |
291 | #ifndef cpu_has_perf_cntr_intr_bit |
292 | #define cpu_has_perf_cntr_intr_bit (cpu_data[0].options & MIPS_CPU_PCI) | |
293 | #endif | |
294 | ||
1e7decdb DD |
295 | #ifndef cpu_has_vz |
296 | #define cpu_has_vz (cpu_data[0].ases & MIPS_ASE_VZ) | |
297 | #endif | |
298 | ||
1da177e4 | 299 | #endif /* __ASM_CPU_FEATURES_H */ |