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
6 * Copyright (C) 2003, 2004 Ralf Baechle
7 * Copyright (C) 2004 Maciej W. Rozycki
9 #ifndef __ASM_CPU_FEATURES_H
10 #define __ASM_CPU_FEATURES_H
13 #include <asm/cpu-info.h>
14 #include <cpu-feature-overrides.h>
16 #ifndef current_cpu_type
17 #define current_cpu_type() current_cpu_data.cputype
21 * SMP assumption: Options of CPU 0 are a superset of all processors.
22 * This is true for all known MIPS systems.
25 #define cpu_has_tlb (cpu_data[0].options & MIPS_CPU_TLB)
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
35 #define cpu_has_3kex (!cpu_has_4kex)
38 #define cpu_has_4kex (cpu_data[0].options & MIPS_CPU_4KEX)
40 #ifndef cpu_has_3k_cache
41 #define cpu_has_3k_cache (cpu_data[0].options & MIPS_CPU_3K_CACHE)
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)
48 #ifndef cpu_has_tx39_cache
49 #define cpu_has_tx39_cache (cpu_data[0].options & MIPS_CPU_TX39_CACHE)
51 #ifndef cpu_has_octeon_cache
52 #define cpu_has_octeon_cache 0
55 #define cpu_has_fpu (current_cpu_data.options & MIPS_CPU_FPU)
56 #define raw_cpu_has_fpu (raw_current_cpu_data.options & MIPS_CPU_FPU)
58 #define raw_cpu_has_fpu cpu_has_fpu
61 #define cpu_has_32fpr (cpu_data[0].options & MIPS_CPU_32FPR)
63 #ifndef cpu_has_counter
64 #define cpu_has_counter (cpu_data[0].options & MIPS_CPU_COUNTER)
67 #define cpu_has_watch (cpu_data[0].options & MIPS_CPU_WATCH)
70 #define cpu_has_divec (cpu_data[0].options & MIPS_CPU_DIVEC)
73 #define cpu_has_vce (cpu_data[0].options & MIPS_CPU_VCE)
75 #ifndef cpu_has_cache_cdex_p
76 #define cpu_has_cache_cdex_p (cpu_data[0].options & MIPS_CPU_CACHE_CDEX_P)
78 #ifndef cpu_has_cache_cdex_s
79 #define cpu_has_cache_cdex_s (cpu_data[0].options & MIPS_CPU_CACHE_CDEX_S)
81 #ifndef cpu_has_prefetch
82 #define cpu_has_prefetch (cpu_data[0].options & MIPS_CPU_PREFETCH)
84 #ifndef cpu_has_mcheck
85 #define cpu_has_mcheck (cpu_data[0].options & MIPS_CPU_MCHECK)
88 #define cpu_has_ejtag (cpu_data[0].options & MIPS_CPU_EJTAG)
91 #define cpu_has_llsc (cpu_data[0].options & MIPS_CPU_LLSC)
93 #ifndef kernel_uses_llsc
94 #define kernel_uses_llsc cpu_has_llsc
96 #ifndef cpu_has_mips16
97 #define cpu_has_mips16 (cpu_data[0].ases & MIPS_ASE_MIPS16)
100 #define cpu_has_mdmx (cpu_data[0].ases & MIPS_ASE_MDMX)
102 #ifndef cpu_has_mips3d
103 #define cpu_has_mips3d (cpu_data[0].ases & MIPS_ASE_MIPS3D)
105 #ifndef cpu_has_smartmips
106 #define cpu_has_smartmips (cpu_data[0].ases & MIPS_ASE_SMARTMIPS)
109 #define cpu_has_rixi (cpu_data[0].options & MIPS_CPU_RIXI)
111 #ifndef cpu_has_mmips
112 # ifdef CONFIG_SYS_SUPPORTS_MICROMIPS
113 # define cpu_has_mmips (cpu_data[0].options & MIPS_CPU_MICROMIPS)
115 # define cpu_has_mmips 0
118 #ifndef cpu_has_vtag_icache
119 #define cpu_has_vtag_icache (cpu_data[0].icache.flags & MIPS_CACHE_VTAG)
121 #ifndef cpu_has_dc_aliases
122 #define cpu_has_dc_aliases (cpu_data[0].dcache.flags & MIPS_CACHE_ALIASES)
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)
127 #ifndef cpu_has_pindexed_dcache
128 #define cpu_has_pindexed_dcache (cpu_data[0].dcache.flags & MIPS_CACHE_PINDEX)
130 #ifndef cpu_has_local_ebase
131 #define cpu_has_local_ebase 1
135 * I-Cache snoops remote store. This only matters on SMP. Some multiprocessors
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
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
145 #ifndef cpu_icache_snoops_remote_store
147 #define cpu_icache_snoops_remote_store (cpu_data[0].icache.flags & MIPS_IC_SNOOPS_REMOTE)
149 #define cpu_icache_snoops_remote_store 1
153 #ifndef cpu_has_mips_2
154 # define cpu_has_mips_2 (cpu_data[0].isa_level & MIPS_CPU_ISA_II)
156 #ifndef cpu_has_mips_3
157 # define cpu_has_mips_3 (cpu_data[0].isa_level & MIPS_CPU_ISA_III)
159 #ifndef cpu_has_mips_4
160 # define cpu_has_mips_4 (cpu_data[0].isa_level & MIPS_CPU_ISA_IV)
162 #ifndef cpu_has_mips_5
163 # define cpu_has_mips_5 (cpu_data[0].isa_level & MIPS_CPU_ISA_V)
165 #ifndef cpu_has_mips32r1
166 # define cpu_has_mips32r1 (cpu_data[0].isa_level & MIPS_CPU_ISA_M32R1)
168 #ifndef cpu_has_mips32r2
169 # define cpu_has_mips32r2 (cpu_data[0].isa_level & MIPS_CPU_ISA_M32R2)
171 #ifndef cpu_has_mips64r1
172 # define cpu_has_mips64r1 (cpu_data[0].isa_level & MIPS_CPU_ISA_M64R1)
174 #ifndef cpu_has_mips64r2
175 # define cpu_has_mips64r2 (cpu_data[0].isa_level & MIPS_CPU_ISA_M64R2)
181 #define cpu_has_mips32 (cpu_has_mips32r1 | cpu_has_mips32r2)
182 #define cpu_has_mips64 (cpu_has_mips64r1 | cpu_has_mips64r2)
183 #define cpu_has_mips_r1 (cpu_has_mips32r1 | cpu_has_mips64r1)
184 #define cpu_has_mips_r2 (cpu_has_mips32r2 | cpu_has_mips64r2)
185 #define cpu_has_mips_r (cpu_has_mips32r1 | cpu_has_mips32r2 | \
186 cpu_has_mips64r1 | cpu_has_mips64r2)
188 #ifndef cpu_has_mips_r2_exec_hazard
189 #define cpu_has_mips_r2_exec_hazard cpu_has_mips_r2
193 * MIPS32, MIPS64, VR5500, IDT32332, IDT32334 and maybe a few other
194 * pre-MIPS32/MIPS53 processors have CLO, CLZ. The IDT RC64574 is 64-bit and
195 * has CLO and CLZ but not DCLO nor DCLZ. For 64-bit kernels
196 * cpu_has_clo_clz also indicates the availability of DCLO and DCLZ.
198 #ifndef cpu_has_clo_clz
199 #define cpu_has_clo_clz cpu_has_mips_r
203 #define cpu_has_dsp (cpu_data[0].ases & MIPS_ASE_DSP)
207 #define cpu_has_dsp2 (cpu_data[0].ases & MIPS_ASE_DSP2P)
210 #ifndef cpu_has_mipsmt
211 #define cpu_has_mipsmt (cpu_data[0].ases & MIPS_ASE_MIPSMT)
214 #ifndef cpu_has_userlocal
215 #define cpu_has_userlocal (cpu_data[0].options & MIPS_CPU_ULRI)
219 # ifndef cpu_has_nofpuex
220 # define cpu_has_nofpuex (cpu_data[0].options & MIPS_CPU_NOFPUEX)
222 # ifndef cpu_has_64bits
223 # define cpu_has_64bits (cpu_data[0].isa_level & MIPS_CPU_ISA_64BIT)
225 # ifndef cpu_has_64bit_zero_reg
226 # define cpu_has_64bit_zero_reg (cpu_data[0].isa_level & MIPS_CPU_ISA_64BIT)
228 # ifndef cpu_has_64bit_gp_regs
229 # define cpu_has_64bit_gp_regs 0
231 # ifndef cpu_has_64bit_addresses
232 # define cpu_has_64bit_addresses 0
235 # define cpu_vmbits 31
240 # ifndef cpu_has_nofpuex
241 # define cpu_has_nofpuex 0
243 # ifndef cpu_has_64bits
244 # define cpu_has_64bits 1
246 # ifndef cpu_has_64bit_zero_reg
247 # define cpu_has_64bit_zero_reg 1
249 # ifndef cpu_has_64bit_gp_regs
250 # define cpu_has_64bit_gp_regs 1
252 # ifndef cpu_has_64bit_addresses
253 # define cpu_has_64bit_addresses 1
256 # define cpu_vmbits cpu_data[0].vmbits
257 # define __NEED_VMBITS_PROBE
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)
264 # define cpu_has_vint 0
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)
270 # define cpu_has_veic 0
273 #ifndef cpu_has_inclusive_pcaches
274 #define cpu_has_inclusive_pcaches (cpu_data[0].options & MIPS_CPU_INCLUSIVE_CACHES)
277 #ifndef cpu_dcache_line_size
278 #define cpu_dcache_line_size() cpu_data[0].dcache.linesz
280 #ifndef cpu_icache_line_size
281 #define cpu_icache_line_size() cpu_data[0].icache.linesz
283 #ifndef cpu_scache_line_size
284 #define cpu_scache_line_size() cpu_data[0].scache.linesz
287 #ifndef cpu_hwrena_impl_bits
288 #define cpu_hwrena_impl_bits 0
291 #ifndef cpu_has_perf_cntr_intr_bit
292 #define cpu_has_perf_cntr_intr_bit (cpu_data[0].options & MIPS_CPU_PCI)
296 #define cpu_has_vz (cpu_data[0].ases & MIPS_ASE_VZ)
299 #endif /* __ASM_CPU_FEATURES_H */