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
12 #include <linux/config.h>
15 #include <asm/cpu-info.h>
16 #include <cpu-feature-overrides.h>
19 * SMP assumption: Options of CPU 0 are a superset of all processors.
20 * This is true for all known MIPS systems.
23 #define cpu_has_tlb (cpu_data[0].options & MIPS_CPU_TLB)
26 #define cpu_has_4kex (cpu_data[0].options & MIPS_CPU_4KEX)
28 #ifndef cpu_has_3k_cache
29 #define cpu_has_3k_cache (cpu_data[0].options & MIPS_CPU_3K_CACHE)
31 #define cpu_has_6k_cache 0
32 #define cpu_has_8k_cache 0
33 #ifndef cpu_has_4k_cache
34 #define cpu_has_4k_cache (cpu_data[0].options & MIPS_CPU_4K_CACHE)
36 #ifndef cpu_has_tx39_cache
37 #define cpu_has_tx39_cache (cpu_data[0].options & MIPS_CPU_TX39_CACHE)
39 #ifndef cpu_has_sb1_cache
40 #define cpu_has_sb1_cache (cpu_data[0].options & MIPS_CPU_SB1_CACHE)
43 #define cpu_has_fpu (cpu_data[0].options & MIPS_CPU_FPU)
46 #define cpu_has_32fpr (cpu_data[0].options & MIPS_CPU_32FPR)
48 #ifndef cpu_has_counter
49 #define cpu_has_counter (cpu_data[0].options & MIPS_CPU_COUNTER)
52 #define cpu_has_watch (cpu_data[0].options & MIPS_CPU_WATCH)
55 #define cpu_has_divec (cpu_data[0].options & MIPS_CPU_DIVEC)
58 #define cpu_has_vce (cpu_data[0].options & MIPS_CPU_VCE)
60 #ifndef cpu_has_cache_cdex_p
61 #define cpu_has_cache_cdex_p (cpu_data[0].options & MIPS_CPU_CACHE_CDEX_P)
63 #ifndef cpu_has_cache_cdex_s
64 #define cpu_has_cache_cdex_s (cpu_data[0].options & MIPS_CPU_CACHE_CDEX_S)
66 #ifndef cpu_has_prefetch
67 #define cpu_has_prefetch (cpu_data[0].options & MIPS_CPU_PREFETCH)
69 #ifndef cpu_has_mcheck
70 #define cpu_has_mcheck (cpu_data[0].options & MIPS_CPU_MCHECK)
73 #define cpu_has_ejtag (cpu_data[0].options & MIPS_CPU_EJTAG)
76 #define cpu_has_llsc (cpu_data[0].options & MIPS_CPU_LLSC)
78 #ifndef cpu_has_mips16
79 #define cpu_has_mips16 (cpu_data[0].ases & MIPS_ASE_MIPS16)
82 #define cpu_has_mdmx (cpu_data[0].ases & MIPS_ASE_MDMX)
84 #ifndef cpu_has_mips3d
85 #define cpu_has_mips3d (cpu_data[0].ases & MIPS_ASE_MIPS3D)
87 #ifndef cpu_has_smartmips
88 #define cpu_has_smartmips (cpu_data[0].ases & MIPS_ASE_SMARTMIPS)
90 #ifndef cpu_has_vtag_icache
91 #define cpu_has_vtag_icache (cpu_data[0].icache.flags & MIPS_CACHE_VTAG)
93 #ifndef cpu_has_dc_aliases
94 #define cpu_has_dc_aliases (cpu_data[0].dcache.flags & MIPS_CACHE_ALIASES)
96 #ifndef cpu_has_ic_fills_f_dc
97 #define cpu_has_ic_fills_f_dc (cpu_data[0].icache.flags & MIPS_CACHE_IC_F_DC)
99 #ifndef cpu_has_pindexed_dcache
100 #define cpu_has_pindexed_dcache (cpu_data[0].dcache.flags & MIPS_CACHE_PINDEX)
104 * I-Cache snoops remote store. This only matters on SMP. Some multiprocessors
105 * such as the R10000 have I-Caches that snoop local stores; the embedded ones
106 * don't. For maintaining I-cache coherency this means we need to flush the
107 * D-cache all the way back to whever the I-cache does refills from, so the
108 * I-cache has a chance to see the new data at all. Then we have to flush the
110 * Note we may have been rescheduled and may no longer be running on the CPU
111 * that did the store so we can't optimize this into only doing the flush on
114 #ifndef cpu_icache_snoops_remote_store
116 #define cpu_icache_snoops_remote_store (cpu_data[0].icache.flags & MIPS_IC_SNOOPS_REMOTE)
118 #define cpu_icache_snoops_remote_store 1
122 # ifndef cpu_has_mips32r1
123 # define cpu_has_mips32r1 (cpu_data[0].isa_level & MIPS_CPU_ISA_M32R1)
125 # ifndef cpu_has_mips32r2
126 # define cpu_has_mips32r2 (cpu_data[0].isa_level & MIPS_CPU_ISA_M32R2)
128 # ifndef cpu_has_mips64r1
129 # define cpu_has_mips64r1 (cpu_data[0].isa_level & MIPS_CPU_ISA_M64R1)
131 # ifndef cpu_has_mips64r2
132 # define cpu_has_mips64r2 (cpu_data[0].isa_level & MIPS_CPU_ISA_M64R2)
138 #define cpu_has_mips32 (cpu_has_mips32r1 | cpu_has_mips32r2)
139 #define cpu_has_mips64 (cpu_has_mips64r1 | cpu_has_mips64r2)
140 #define cpu_has_mips_r1 (cpu_has_mips32r1 | cpu_has_mips64r1)
141 #define cpu_has_mips_r2 (cpu_has_mips32r2 | cpu_has_mips64r2)
144 #define cpu_has_dsp (cpu_data[0].ases & MIPS_ASE_DSP)
147 #ifdef CONFIG_MIPS_MT
148 #ifndef cpu_has_mipsmt
149 # define cpu_has_mipsmt (cpu_data[0].ases & MIPS_ASE_MIPSMT)
152 # define cpu_has_mipsmt 0
156 # ifndef cpu_has_nofpuex
157 # define cpu_has_nofpuex (cpu_data[0].options & MIPS_CPU_NOFPUEX)
159 # ifndef cpu_has_64bits
160 # define cpu_has_64bits (cpu_data[0].isa_level & MIPS_CPU_ISA_64BIT)
162 # ifndef cpu_has_64bit_zero_reg
163 # define cpu_has_64bit_zero_reg (cpu_data[0].isa_level & MIPS_CPU_ISA_64BIT)
165 # ifndef cpu_has_64bit_gp_regs
166 # define cpu_has_64bit_gp_regs 0
168 # ifndef cpu_has_64bit_addresses
169 # define cpu_has_64bit_addresses 0
174 # ifndef cpu_has_nofpuex
175 # define cpu_has_nofpuex 0
177 # ifndef cpu_has_64bits
178 # define cpu_has_64bits 1
180 # ifndef cpu_has_64bit_zero_reg
181 # define cpu_has_64bit_zero_reg 1
183 # ifndef cpu_has_64bit_gp_regs
184 # define cpu_has_64bit_gp_regs 1
186 # ifndef cpu_has_64bit_addresses
187 # define cpu_has_64bit_addresses 1
191 #ifdef CONFIG_CPU_MIPSR2
192 # if defined(CONFIG_CPU_MIPSR2_IRQ_VI) && !defined(cpu_has_vint)
193 # define cpu_has_vint (cpu_data[0].options & MIPS_CPU_VINT)
195 # define cpu_has_vint 0
197 # if defined(CONFIG_CPU_MIPSR2_IRQ_EI) && !defined(cpu_has_veic)
198 # define cpu_has_veic (cpu_data[0].options & MIPS_CPU_VEIC)
200 # define cpu_has_veic 0
203 # define cpu_has_vint 0
204 # define cpu_has_veic 0
207 #ifndef cpu_has_subset_pcaches
208 #define cpu_has_subset_pcaches (cpu_data[0].options & MIPS_CPU_SUBSET_CACHES)
211 #ifndef cpu_dcache_line_size
212 #define cpu_dcache_line_size() current_cpu_data.dcache.linesz
214 #ifndef cpu_icache_line_size
215 #define cpu_icache_line_size() current_cpu_data.icache.linesz
217 #ifndef cpu_scache_line_size
218 #define cpu_scache_line_size() current_cpu_data.scache.linesz
221 #endif /* __ASM_CPU_FEATURES_H */