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)
28 #define cpu_has_4kex (cpu_data[0].options & MIPS_CPU_4KEX)
30 #ifndef cpu_has_3k_cache
31 #define cpu_has_3k_cache (cpu_data[0].options & MIPS_CPU_3K_CACHE)
33 #define cpu_has_6k_cache 0
34 #define cpu_has_8k_cache 0
35 #ifndef cpu_has_4k_cache
36 #define cpu_has_4k_cache (cpu_data[0].options & MIPS_CPU_4K_CACHE)
38 #ifndef cpu_has_tx39_cache
39 #define cpu_has_tx39_cache (cpu_data[0].options & MIPS_CPU_TX39_CACHE)
41 #ifndef cpu_has_octeon_cache
42 #define cpu_has_octeon_cache 0
45 #define cpu_has_fpu (current_cpu_data.options & MIPS_CPU_FPU)
46 #define raw_cpu_has_fpu (raw_current_cpu_data.options & MIPS_CPU_FPU)
48 #define raw_cpu_has_fpu cpu_has_fpu
51 #define cpu_has_32fpr (cpu_data[0].options & MIPS_CPU_32FPR)
53 #ifndef cpu_has_counter
54 #define cpu_has_counter (cpu_data[0].options & MIPS_CPU_COUNTER)
57 #define cpu_has_watch (cpu_data[0].options & MIPS_CPU_WATCH)
60 #define cpu_has_divec (cpu_data[0].options & MIPS_CPU_DIVEC)
63 #define cpu_has_vce (cpu_data[0].options & MIPS_CPU_VCE)
65 #ifndef cpu_has_cache_cdex_p
66 #define cpu_has_cache_cdex_p (cpu_data[0].options & MIPS_CPU_CACHE_CDEX_P)
68 #ifndef cpu_has_cache_cdex_s
69 #define cpu_has_cache_cdex_s (cpu_data[0].options & MIPS_CPU_CACHE_CDEX_S)
71 #ifndef cpu_has_prefetch
72 #define cpu_has_prefetch (cpu_data[0].options & MIPS_CPU_PREFETCH)
74 #ifndef cpu_has_mcheck
75 #define cpu_has_mcheck (cpu_data[0].options & MIPS_CPU_MCHECK)
78 #define cpu_has_ejtag (cpu_data[0].options & MIPS_CPU_EJTAG)
81 #define cpu_has_llsc (cpu_data[0].options & MIPS_CPU_LLSC)
83 #ifndef cpu_has_mips16
84 #define cpu_has_mips16 (cpu_data[0].ases & MIPS_ASE_MIPS16)
87 #define cpu_has_mdmx (cpu_data[0].ases & MIPS_ASE_MDMX)
89 #ifndef cpu_has_mips3d
90 #define cpu_has_mips3d (cpu_data[0].ases & MIPS_ASE_MIPS3D)
92 #ifndef cpu_has_smartmips
93 #define cpu_has_smartmips (cpu_data[0].ases & MIPS_ASE_SMARTMIPS)
95 #ifndef cpu_has_vtag_icache
96 #define cpu_has_vtag_icache (cpu_data[0].icache.flags & MIPS_CACHE_VTAG)
98 #ifndef cpu_has_dc_aliases
99 #define cpu_has_dc_aliases (cpu_data[0].dcache.flags & MIPS_CACHE_ALIASES)
101 #ifndef cpu_has_ic_fills_f_dc
102 #define cpu_has_ic_fills_f_dc (cpu_data[0].icache.flags & MIPS_CACHE_IC_F_DC)
104 #ifndef cpu_has_pindexed_dcache
105 #define cpu_has_pindexed_dcache (cpu_data[0].dcache.flags & MIPS_CACHE_PINDEX)
109 * I-Cache snoops remote store. This only matters on SMP. Some multiprocessors
110 * such as the R10000 have I-Caches that snoop local stores; the embedded ones
111 * don't. For maintaining I-cache coherency this means we need to flush the
112 * D-cache all the way back to whever the I-cache does refills from, so the
113 * I-cache has a chance to see the new data at all. Then we have to flush the
115 * Note we may have been rescheduled and may no longer be running on the CPU
116 * that did the store so we can't optimize this into only doing the flush on
119 #ifndef cpu_icache_snoops_remote_store
121 #define cpu_icache_snoops_remote_store (cpu_data[0].icache.flags & MIPS_IC_SNOOPS_REMOTE)
123 #define cpu_icache_snoops_remote_store 1
127 # ifndef cpu_has_mips32r1
128 # define cpu_has_mips32r1 (cpu_data[0].isa_level & MIPS_CPU_ISA_M32R1)
130 # ifndef cpu_has_mips32r2
131 # define cpu_has_mips32r2 (cpu_data[0].isa_level & MIPS_CPU_ISA_M32R2)
133 # ifndef cpu_has_mips64r1
134 # define cpu_has_mips64r1 (cpu_data[0].isa_level & MIPS_CPU_ISA_M64R1)
136 # ifndef cpu_has_mips64r2
137 # define cpu_has_mips64r2 (cpu_data[0].isa_level & MIPS_CPU_ISA_M64R2)
143 #define cpu_has_mips32 (cpu_has_mips32r1 | cpu_has_mips32r2)
144 #define cpu_has_mips64 (cpu_has_mips64r1 | cpu_has_mips64r2)
145 #define cpu_has_mips_r1 (cpu_has_mips32r1 | cpu_has_mips64r1)
146 #define cpu_has_mips_r2 (cpu_has_mips32r2 | cpu_has_mips64r2)
147 #define cpu_has_mips_r (cpu_has_mips32r1 | cpu_has_mips32r2 | \
148 cpu_has_mips64r1 | cpu_has_mips64r2)
151 * MIPS32, MIPS64, VR5500, IDT32332, IDT32334 and maybe a few other
152 * pre-MIPS32/MIPS53 processors have CLO, CLZ. For 64-bit kernels
153 * cpu_has_clo_clz also indicates the availability of DCLO and DCLZ.
155 # ifndef cpu_has_clo_clz
156 # define cpu_has_clo_clz cpu_has_mips_r
160 #define cpu_has_dsp (cpu_data[0].ases & MIPS_ASE_DSP)
163 #ifndef cpu_has_mipsmt
164 #define cpu_has_mipsmt (cpu_data[0].ases & MIPS_ASE_MIPSMT)
167 #ifndef cpu_has_userlocal
168 #define cpu_has_userlocal (cpu_data[0].options & MIPS_CPU_ULRI)
172 # ifndef cpu_has_nofpuex
173 # define cpu_has_nofpuex (cpu_data[0].options & MIPS_CPU_NOFPUEX)
175 # ifndef cpu_has_64bits
176 # define cpu_has_64bits (cpu_data[0].isa_level & MIPS_CPU_ISA_64BIT)
178 # ifndef cpu_has_64bit_zero_reg
179 # define cpu_has_64bit_zero_reg (cpu_data[0].isa_level & MIPS_CPU_ISA_64BIT)
181 # ifndef cpu_has_64bit_gp_regs
182 # define cpu_has_64bit_gp_regs 0
184 # ifndef cpu_has_64bit_addresses
185 # define cpu_has_64bit_addresses 0
190 # ifndef cpu_has_nofpuex
191 # define cpu_has_nofpuex 0
193 # ifndef cpu_has_64bits
194 # define cpu_has_64bits 1
196 # ifndef cpu_has_64bit_zero_reg
197 # define cpu_has_64bit_zero_reg 1
199 # ifndef cpu_has_64bit_gp_regs
200 # define cpu_has_64bit_gp_regs 1
202 # ifndef cpu_has_64bit_addresses
203 # define cpu_has_64bit_addresses 1
207 #if defined(CONFIG_CPU_MIPSR2_IRQ_VI) && !defined(cpu_has_vint)
208 # define cpu_has_vint (cpu_data[0].options & MIPS_CPU_VINT)
209 #elif !defined(cpu_has_vint)
210 # define cpu_has_vint 0
213 #if defined(CONFIG_CPU_MIPSR2_IRQ_EI) && !defined(cpu_has_veic)
214 # define cpu_has_veic (cpu_data[0].options & MIPS_CPU_VEIC)
215 #elif !defined(cpu_has_veic)
216 # define cpu_has_veic 0
219 #ifndef cpu_has_inclusive_pcaches
220 #define cpu_has_inclusive_pcaches (cpu_data[0].options & MIPS_CPU_INCLUSIVE_CACHES)
223 #ifndef cpu_dcache_line_size
224 #define cpu_dcache_line_size() cpu_data[0].dcache.linesz
226 #ifndef cpu_icache_line_size
227 #define cpu_icache_line_size() cpu_data[0].icache.linesz
229 #ifndef cpu_scache_line_size
230 #define cpu_scache_line_size() cpu_data[0].scache.linesz
233 #endif /* __ASM_CPU_FEATURES_H */