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)
42 #define cpu_has_fpu (current_cpu_data.options & MIPS_CPU_FPU)
43 #define raw_cpu_has_fpu (raw_current_cpu_data.options & MIPS_CPU_FPU)
45 #define raw_cpu_has_fpu cpu_has_fpu
48 #define cpu_has_32fpr (cpu_data[0].options & MIPS_CPU_32FPR)
50 #ifndef cpu_has_counter
51 #define cpu_has_counter (cpu_data[0].options & MIPS_CPU_COUNTER)
54 #define cpu_has_watch (cpu_data[0].options & MIPS_CPU_WATCH)
57 #define cpu_has_divec (cpu_data[0].options & MIPS_CPU_DIVEC)
60 #define cpu_has_vce (cpu_data[0].options & MIPS_CPU_VCE)
62 #ifndef cpu_has_cache_cdex_p
63 #define cpu_has_cache_cdex_p (cpu_data[0].options & MIPS_CPU_CACHE_CDEX_P)
65 #ifndef cpu_has_cache_cdex_s
66 #define cpu_has_cache_cdex_s (cpu_data[0].options & MIPS_CPU_CACHE_CDEX_S)
68 #ifndef cpu_has_prefetch
69 #define cpu_has_prefetch (cpu_data[0].options & MIPS_CPU_PREFETCH)
71 #ifndef cpu_has_mcheck
72 #define cpu_has_mcheck (cpu_data[0].options & MIPS_CPU_MCHECK)
75 #define cpu_has_ejtag (cpu_data[0].options & MIPS_CPU_EJTAG)
78 #define cpu_has_llsc (cpu_data[0].options & MIPS_CPU_LLSC)
80 #ifndef cpu_has_mips16
81 #define cpu_has_mips16 (cpu_data[0].ases & MIPS_ASE_MIPS16)
84 #define cpu_has_mdmx (cpu_data[0].ases & MIPS_ASE_MDMX)
86 #ifndef cpu_has_mips3d
87 #define cpu_has_mips3d (cpu_data[0].ases & MIPS_ASE_MIPS3D)
89 #ifndef cpu_has_smartmips
90 #define cpu_has_smartmips (cpu_data[0].ases & MIPS_ASE_SMARTMIPS)
92 #ifndef cpu_has_vtag_icache
93 #define cpu_has_vtag_icache (cpu_data[0].icache.flags & MIPS_CACHE_VTAG)
95 #ifndef cpu_has_dc_aliases
96 #define cpu_has_dc_aliases (cpu_data[0].dcache.flags & MIPS_CACHE_ALIASES)
98 #ifndef cpu_has_ic_fills_f_dc
99 #define cpu_has_ic_fills_f_dc (cpu_data[0].icache.flags & MIPS_CACHE_IC_F_DC)
101 #ifndef cpu_has_pindexed_dcache
102 #define cpu_has_pindexed_dcache (cpu_data[0].dcache.flags & MIPS_CACHE_PINDEX)
106 * I-Cache snoops remote store. This only matters on SMP. Some multiprocessors
107 * such as the R10000 have I-Caches that snoop local stores; the embedded ones
108 * don't. For maintaining I-cache coherency this means we need to flush the
109 * D-cache all the way back to whever the I-cache does refills from, so the
110 * I-cache has a chance to see the new data at all. Then we have to flush the
112 * Note we may have been rescheduled and may no longer be running on the CPU
113 * that did the store so we can't optimize this into only doing the flush on
116 #ifndef cpu_icache_snoops_remote_store
118 #define cpu_icache_snoops_remote_store (cpu_data[0].icache.flags & MIPS_IC_SNOOPS_REMOTE)
120 #define cpu_icache_snoops_remote_store 1
124 # ifndef cpu_has_mips32r1
125 # define cpu_has_mips32r1 (cpu_data[0].isa_level & MIPS_CPU_ISA_M32R1)
127 # ifndef cpu_has_mips32r2
128 # define cpu_has_mips32r2 (cpu_data[0].isa_level & MIPS_CPU_ISA_M32R2)
130 # ifndef cpu_has_mips64r1
131 # define cpu_has_mips64r1 (cpu_data[0].isa_level & MIPS_CPU_ISA_M64R1)
133 # ifndef cpu_has_mips64r2
134 # define cpu_has_mips64r2 (cpu_data[0].isa_level & MIPS_CPU_ISA_M64R2)
140 #define cpu_has_mips32 (cpu_has_mips32r1 | cpu_has_mips32r2)
141 #define cpu_has_mips64 (cpu_has_mips64r1 | cpu_has_mips64r2)
142 #define cpu_has_mips_r1 (cpu_has_mips32r1 | cpu_has_mips64r1)
143 #define cpu_has_mips_r2 (cpu_has_mips32r2 | cpu_has_mips64r2)
144 #define cpu_has_mips_r (cpu_has_mips32r1 | cpu_has_mips32r2 | \
145 cpu_has_mips64r1 | cpu_has_mips64r2)
148 #define cpu_has_dsp (cpu_data[0].ases & MIPS_ASE_DSP)
151 #ifndef cpu_has_mipsmt
152 #define cpu_has_mipsmt (cpu_data[0].ases & MIPS_ASE_MIPSMT)
155 #ifndef cpu_has_userlocal
156 #define cpu_has_userlocal (cpu_data[0].options & MIPS_CPU_ULRI)
160 # ifndef cpu_has_nofpuex
161 # define cpu_has_nofpuex (cpu_data[0].options & MIPS_CPU_NOFPUEX)
163 # ifndef cpu_has_64bits
164 # define cpu_has_64bits (cpu_data[0].isa_level & MIPS_CPU_ISA_64BIT)
166 # ifndef cpu_has_64bit_zero_reg
167 # define cpu_has_64bit_zero_reg (cpu_data[0].isa_level & MIPS_CPU_ISA_64BIT)
169 # ifndef cpu_has_64bit_gp_regs
170 # define cpu_has_64bit_gp_regs 0
172 # ifndef cpu_has_64bit_addresses
173 # define cpu_has_64bit_addresses 0
178 # ifndef cpu_has_nofpuex
179 # define cpu_has_nofpuex 0
181 # ifndef cpu_has_64bits
182 # define cpu_has_64bits 1
184 # ifndef cpu_has_64bit_zero_reg
185 # define cpu_has_64bit_zero_reg 1
187 # ifndef cpu_has_64bit_gp_regs
188 # define cpu_has_64bit_gp_regs 1
190 # ifndef cpu_has_64bit_addresses
191 # define cpu_has_64bit_addresses 1
195 #if defined(CONFIG_CPU_MIPSR2_IRQ_VI) && !defined(cpu_has_vint)
196 # define cpu_has_vint (cpu_data[0].options & MIPS_CPU_VINT)
197 #elif !defined(cpu_has_vint)
198 # define cpu_has_vint 0
201 #if defined(CONFIG_CPU_MIPSR2_IRQ_EI) && !defined(cpu_has_veic)
202 # define cpu_has_veic (cpu_data[0].options & MIPS_CPU_VEIC)
203 #elif !defined(cpu_has_veic)
204 # define cpu_has_veic 0
207 #ifndef cpu_has_inclusive_pcaches
208 #define cpu_has_inclusive_pcaches (cpu_data[0].options & MIPS_CPU_INCLUSIVE_CACHES)
211 #ifndef cpu_dcache_line_size
212 #define cpu_dcache_line_size() cpu_data[0].dcache.linesz
214 #ifndef cpu_icache_line_size
215 #define cpu_icache_line_size() cpu_data[0].icache.linesz
217 #ifndef cpu_scache_line_size
218 #define cpu_scache_line_size() cpu_data[0].scache.linesz
221 #endif /* __ASM_CPU_FEATURES_H */