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
20 #define boot_cpu_type() cpu_data[0].cputype
23 * SMP assumption: Options of CPU 0 are a superset of all processors.
24 * This is true for all known MIPS systems.
27 #define cpu_has_tlb (cpu_data[0].options & MIPS_CPU_TLB)
31 * For the moment we don't consider R6000 and R8000 so we can assume that
32 * anything that doesn't support R4000-style exceptions and interrupts is
33 * R3000-like. Users should still treat these two macro definitions as
37 #define cpu_has_3kex (!cpu_has_4kex)
40 #define cpu_has_4kex (cpu_data[0].options & MIPS_CPU_4KEX)
42 #ifndef cpu_has_3k_cache
43 #define cpu_has_3k_cache (cpu_data[0].options & MIPS_CPU_3K_CACHE)
45 #define cpu_has_6k_cache 0
46 #define cpu_has_8k_cache 0
47 #ifndef cpu_has_4k_cache
48 #define cpu_has_4k_cache (cpu_data[0].options & MIPS_CPU_4K_CACHE)
50 #ifndef cpu_has_tx39_cache
51 #define cpu_has_tx39_cache (cpu_data[0].options & MIPS_CPU_TX39_CACHE)
53 #ifndef cpu_has_octeon_cache
54 #define cpu_has_octeon_cache 0
57 #define cpu_has_fpu (current_cpu_data.options & MIPS_CPU_FPU)
58 #define raw_cpu_has_fpu (raw_current_cpu_data.options & MIPS_CPU_FPU)
60 #define raw_cpu_has_fpu cpu_has_fpu
63 #define cpu_has_32fpr (cpu_data[0].options & MIPS_CPU_32FPR)
65 #ifndef cpu_has_counter
66 #define cpu_has_counter (cpu_data[0].options & MIPS_CPU_COUNTER)
69 #define cpu_has_watch (cpu_data[0].options & MIPS_CPU_WATCH)
72 #define cpu_has_divec (cpu_data[0].options & MIPS_CPU_DIVEC)
75 #define cpu_has_vce (cpu_data[0].options & MIPS_CPU_VCE)
77 #ifndef cpu_has_cache_cdex_p
78 #define cpu_has_cache_cdex_p (cpu_data[0].options & MIPS_CPU_CACHE_CDEX_P)
80 #ifndef cpu_has_cache_cdex_s
81 #define cpu_has_cache_cdex_s (cpu_data[0].options & MIPS_CPU_CACHE_CDEX_S)
83 #ifndef cpu_has_prefetch
84 #define cpu_has_prefetch (cpu_data[0].options & MIPS_CPU_PREFETCH)
86 #ifndef cpu_has_mcheck
87 #define cpu_has_mcheck (cpu_data[0].options & MIPS_CPU_MCHECK)
90 #define cpu_has_ejtag (cpu_data[0].options & MIPS_CPU_EJTAG)
93 #define cpu_has_llsc (cpu_data[0].options & MIPS_CPU_LLSC)
95 #ifndef kernel_uses_llsc
96 #define kernel_uses_llsc cpu_has_llsc
98 #ifndef cpu_has_mips16
99 #define cpu_has_mips16 (cpu_data[0].ases & MIPS_ASE_MIPS16)
102 #define cpu_has_mdmx (cpu_data[0].ases & MIPS_ASE_MDMX)
104 #ifndef cpu_has_mips3d
105 #define cpu_has_mips3d (cpu_data[0].ases & MIPS_ASE_MIPS3D)
107 #ifndef cpu_has_smartmips
108 #define cpu_has_smartmips (cpu_data[0].ases & MIPS_ASE_SMARTMIPS)
111 #define cpu_has_rixi (cpu_data[0].options & MIPS_CPU_RIXI)
113 #ifndef cpu_has_mmips
114 # ifdef CONFIG_SYS_SUPPORTS_MICROMIPS
115 # define cpu_has_mmips (cpu_data[0].options & MIPS_CPU_MICROMIPS)
117 # define cpu_has_mmips 0
120 #ifndef cpu_has_vtag_icache
121 #define cpu_has_vtag_icache (cpu_data[0].icache.flags & MIPS_CACHE_VTAG)
123 #ifndef cpu_has_dc_aliases
124 #define cpu_has_dc_aliases (cpu_data[0].dcache.flags & MIPS_CACHE_ALIASES)
126 #ifndef cpu_has_ic_fills_f_dc
127 #define cpu_has_ic_fills_f_dc (cpu_data[0].icache.flags & MIPS_CACHE_IC_F_DC)
129 #ifndef cpu_has_pindexed_dcache
130 #define cpu_has_pindexed_dcache (cpu_data[0].dcache.flags & MIPS_CACHE_PINDEX)
132 #ifndef cpu_has_local_ebase
133 #define cpu_has_local_ebase 1
137 * I-Cache snoops remote store. This only matters on SMP. Some multiprocessors
138 * such as the R10000 have I-Caches that snoop local stores; the embedded ones
139 * don't. For maintaining I-cache coherency this means we need to flush the
140 * D-cache all the way back to whever the I-cache does refills from, so the
141 * I-cache has a chance to see the new data at all. Then we have to flush the
143 * Note we may have been rescheduled and may no longer be running on the CPU
144 * that did the store so we can't optimize this into only doing the flush on
147 #ifndef cpu_icache_snoops_remote_store
149 #define cpu_icache_snoops_remote_store (cpu_data[0].icache.flags & MIPS_IC_SNOOPS_REMOTE)
151 #define cpu_icache_snoops_remote_store 1
155 #ifndef cpu_has_mips_2
156 # define cpu_has_mips_2 (cpu_data[0].isa_level & MIPS_CPU_ISA_II)
158 #ifndef cpu_has_mips_3
159 # define cpu_has_mips_3 (cpu_data[0].isa_level & MIPS_CPU_ISA_III)
161 #ifndef cpu_has_mips_4
162 # define cpu_has_mips_4 (cpu_data[0].isa_level & MIPS_CPU_ISA_IV)
164 #ifndef cpu_has_mips_5
165 # define cpu_has_mips_5 (cpu_data[0].isa_level & MIPS_CPU_ISA_V)
167 #ifndef cpu_has_mips32r1
168 # define cpu_has_mips32r1 (cpu_data[0].isa_level & MIPS_CPU_ISA_M32R1)
170 #ifndef cpu_has_mips32r2
171 # define cpu_has_mips32r2 (cpu_data[0].isa_level & MIPS_CPU_ISA_M32R2)
173 #ifndef cpu_has_mips64r1
174 # define cpu_has_mips64r1 (cpu_data[0].isa_level & MIPS_CPU_ISA_M64R1)
176 #ifndef cpu_has_mips64r2
177 # define cpu_has_mips64r2 (cpu_data[0].isa_level & MIPS_CPU_ISA_M64R2)
183 #define cpu_has_mips32 (cpu_has_mips32r1 | cpu_has_mips32r2)
184 #define cpu_has_mips64 (cpu_has_mips64r1 | cpu_has_mips64r2)
185 #define cpu_has_mips_r1 (cpu_has_mips32r1 | cpu_has_mips64r1)
186 #define cpu_has_mips_r2 (cpu_has_mips32r2 | cpu_has_mips64r2)
187 #define cpu_has_mips_r (cpu_has_mips32r1 | cpu_has_mips32r2 | \
188 cpu_has_mips64r1 | cpu_has_mips64r2)
190 #ifndef cpu_has_mips_r2_exec_hazard
191 #define cpu_has_mips_r2_exec_hazard cpu_has_mips_r2
195 * MIPS32, MIPS64, VR5500, IDT32332, IDT32334 and maybe a few other
196 * pre-MIPS32/MIPS53 processors have CLO, CLZ. The IDT RC64574 is 64-bit and
197 * has CLO and CLZ but not DCLO nor DCLZ. For 64-bit kernels
198 * cpu_has_clo_clz also indicates the availability of DCLO and DCLZ.
200 #ifndef cpu_has_clo_clz
201 #define cpu_has_clo_clz cpu_has_mips_r
205 #define cpu_has_dsp (cpu_data[0].ases & MIPS_ASE_DSP)
209 #define cpu_has_dsp2 (cpu_data[0].ases & MIPS_ASE_DSP2P)
212 #ifndef cpu_has_mipsmt
213 #define cpu_has_mipsmt (cpu_data[0].ases & MIPS_ASE_MIPSMT)
216 #ifndef cpu_has_userlocal
217 #define cpu_has_userlocal (cpu_data[0].options & MIPS_CPU_ULRI)
221 # ifndef cpu_has_nofpuex
222 # define cpu_has_nofpuex (cpu_data[0].options & MIPS_CPU_NOFPUEX)
224 # ifndef cpu_has_64bits
225 # define cpu_has_64bits (cpu_data[0].isa_level & MIPS_CPU_ISA_64BIT)
227 # ifndef cpu_has_64bit_zero_reg
228 # define cpu_has_64bit_zero_reg (cpu_data[0].isa_level & MIPS_CPU_ISA_64BIT)
230 # ifndef cpu_has_64bit_gp_regs
231 # define cpu_has_64bit_gp_regs 0
233 # ifndef cpu_has_64bit_addresses
234 # define cpu_has_64bit_addresses 0
237 # define cpu_vmbits 31
242 # ifndef cpu_has_nofpuex
243 # define cpu_has_nofpuex 0
245 # ifndef cpu_has_64bits
246 # define cpu_has_64bits 1
248 # ifndef cpu_has_64bit_zero_reg
249 # define cpu_has_64bit_zero_reg 1
251 # ifndef cpu_has_64bit_gp_regs
252 # define cpu_has_64bit_gp_regs 1
254 # ifndef cpu_has_64bit_addresses
255 # define cpu_has_64bit_addresses 1
258 # define cpu_vmbits cpu_data[0].vmbits
259 # define __NEED_VMBITS_PROBE
263 #if defined(CONFIG_CPU_MIPSR2_IRQ_VI) && !defined(cpu_has_vint)
264 # define cpu_has_vint (cpu_data[0].options & MIPS_CPU_VINT)
265 #elif !defined(cpu_has_vint)
266 # define cpu_has_vint 0
269 #if defined(CONFIG_CPU_MIPSR2_IRQ_EI) && !defined(cpu_has_veic)
270 # define cpu_has_veic (cpu_data[0].options & MIPS_CPU_VEIC)
271 #elif !defined(cpu_has_veic)
272 # define cpu_has_veic 0
275 #ifndef cpu_has_inclusive_pcaches
276 #define cpu_has_inclusive_pcaches (cpu_data[0].options & MIPS_CPU_INCLUSIVE_CACHES)
279 #ifndef cpu_dcache_line_size
280 #define cpu_dcache_line_size() cpu_data[0].dcache.linesz
282 #ifndef cpu_icache_line_size
283 #define cpu_icache_line_size() cpu_data[0].icache.linesz
285 #ifndef cpu_scache_line_size
286 #define cpu_scache_line_size() cpu_data[0].scache.linesz
289 #ifndef cpu_hwrena_impl_bits
290 #define cpu_hwrena_impl_bits 0
293 #ifndef cpu_has_perf_cntr_intr_bit
294 #define cpu_has_perf_cntr_intr_bit (cpu_data[0].options & MIPS_CPU_PCI)
298 #define cpu_has_vz (cpu_data[0].ases & MIPS_ASE_VZ)
301 #endif /* __ASM_CPU_FEATURES_H */