diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mips/include/asm/cpu-features.h | 176 |
1 files changed, 107 insertions, 69 deletions
diff --git a/arch/mips/include/asm/cpu-features.h b/arch/mips/include/asm/cpu-features.h index 9cdb4e4ce258..0edba3e75747 100644 --- a/arch/mips/include/asm/cpu-features.h +++ b/arch/mips/include/asm/cpu-features.h @@ -14,39 +14,77 @@ #include <asm/isa-rev.h> #include <cpu-feature-overrides.h> +#define __ase(ase) (cpu_data[0].ases & (ase)) +#define __opt(opt) (cpu_data[0].options & (opt)) + +/* + * Check if MIPS_ISA_REV is >= isa *and* an option or ASE is detected during + * boot (typically by cpu_probe()). + * + * Note that these should only be used in cases where a kernel built for an + * older ISA *cannot* run on a CPU which supports the feature in question. For + * example this may be used for features introduced with MIPSr6, since a kernel + * built for an older ISA cannot run on a MIPSr6 CPU. This should not be used + * for MIPSr2 features however, since a MIPSr1 or earlier kernel might run on a + * MIPSr2 CPU. + */ +#define __isa_ge_and_ase(isa, ase) ((MIPS_ISA_REV >= (isa)) && __ase(ase)) +#define __isa_ge_and_opt(isa, opt) ((MIPS_ISA_REV >= (isa)) && __opt(opt)) + +/* + * Check if MIPS_ISA_REV is >= isa *or* an option or ASE is detected during + * boot (typically by cpu_probe()). + * + * These are for use with features that are optional up until a particular ISA + * revision & then become required. + */ +#define __isa_ge_or_ase(isa, ase) ((MIPS_ISA_REV >= (isa)) || __ase(ase)) +#define __isa_ge_or_opt(isa, opt) ((MIPS_ISA_REV >= (isa)) || __opt(opt)) + +/* + * Check if MIPS_ISA_REV is < isa *and* an option or ASE is detected during + * boot (typically by cpu_probe()). + * + * These are for use with features that are optional up until a particular ISA + * revision & are then removed - ie. no longer present in any CPU implementing + * the given ISA revision. + */ +#define __isa_lt_and_ase(isa, ase) ((MIPS_ISA_REV < (isa)) && __ase(ase)) +#define __isa_lt_and_opt(isa, opt) ((MIPS_ISA_REV < (isa)) && __opt(opt)) + /* * SMP assumption: Options of CPU 0 are a superset of all processors. * This is true for all known MIPS systems. */ #ifndef cpu_has_tlb -#define cpu_has_tlb (cpu_data[0].options & MIPS_CPU_TLB) +#define cpu_has_tlb __opt(MIPS_CPU_TLB) #endif #ifndef cpu_has_ftlb -#define cpu_has_ftlb (cpu_data[0].options & MIPS_CPU_FTLB) +#define cpu_has_ftlb __opt(MIPS_CPU_FTLB) #endif #ifndef cpu_has_tlbinv -#define cpu_has_tlbinv (cpu_data[0].options & MIPS_CPU_TLBINV) +#define cpu_has_tlbinv __opt(MIPS_CPU_TLBINV) #endif #ifndef cpu_has_segments -#define cpu_has_segments (cpu_data[0].options & MIPS_CPU_SEGMENTS) +#define cpu_has_segments __opt(MIPS_CPU_SEGMENTS) #endif #ifndef cpu_has_eva -#define cpu_has_eva (cpu_data[0].options & MIPS_CPU_EVA) +#define cpu_has_eva __opt(MIPS_CPU_EVA) #endif #ifndef cpu_has_htw -#define cpu_has_htw (cpu_data[0].options & MIPS_CPU_HTW) +#define cpu_has_htw __opt(MIPS_CPU_HTW) #endif #ifndef cpu_has_ldpte -#define cpu_has_ldpte (cpu_data[0].options & MIPS_CPU_LDPTE) +#define cpu_has_ldpte __opt(MIPS_CPU_LDPTE) #endif #ifndef cpu_has_rixiex -#define cpu_has_rixiex (cpu_data[0].options & MIPS_CPU_RIXIEX) +#define cpu_has_rixiex __isa_ge_or_opt(6, MIPS_CPU_RIXIEX) #endif #ifndef cpu_has_maar -#define cpu_has_maar (cpu_data[0].options & MIPS_CPU_MAAR) +#define cpu_has_maar __opt(MIPS_CPU_MAAR) #endif #ifndef cpu_has_rw_llb -#define cpu_has_rw_llb (cpu_data[0].options & MIPS_CPU_RW_LLB) +#define cpu_has_rw_llb __isa_ge_or_opt(6, MIPS_CPU_RW_LLB) #endif /* @@ -59,18 +97,18 @@ #define cpu_has_3kex (!cpu_has_4kex) #endif #ifndef cpu_has_4kex -#define cpu_has_4kex (cpu_data[0].options & MIPS_CPU_4KEX) +#define cpu_has_4kex __isa_ge_or_opt(1, MIPS_CPU_4KEX) #endif #ifndef cpu_has_3k_cache -#define cpu_has_3k_cache (cpu_data[0].options & MIPS_CPU_3K_CACHE) +#define cpu_has_3k_cache __isa_lt_and_opt(1, MIPS_CPU_3K_CACHE) #endif #define cpu_has_6k_cache 0 #define cpu_has_8k_cache 0 #ifndef cpu_has_4k_cache -#define cpu_has_4k_cache (cpu_data[0].options & MIPS_CPU_4K_CACHE) +#define cpu_has_4k_cache __isa_ge_or_opt(1, MIPS_CPU_4K_CACHE) #endif #ifndef cpu_has_tx39_cache -#define cpu_has_tx39_cache (cpu_data[0].options & MIPS_CPU_TX39_CACHE) +#define cpu_has_tx39_cache __opt(MIPS_CPU_TX39_CACHE) #endif #ifndef cpu_has_octeon_cache #define cpu_has_octeon_cache 0 @@ -83,92 +121,92 @@ #define raw_cpu_has_fpu cpu_has_fpu #endif #ifndef cpu_has_32fpr -#define cpu_has_32fpr (cpu_data[0].options & MIPS_CPU_32FPR) +#define cpu_has_32fpr __isa_ge_or_opt(1, MIPS_CPU_32FPR) #endif #ifndef cpu_has_counter -#define cpu_has_counter (cpu_data[0].options & MIPS_CPU_COUNTER) +#define cpu_has_counter __opt(MIPS_CPU_COUNTER) #endif #ifndef cpu_has_watch -#define cpu_has_watch (cpu_data[0].options & MIPS_CPU_WATCH) +#define cpu_has_watch __opt(MIPS_CPU_WATCH) #endif #ifndef cpu_has_divec -#define cpu_has_divec (cpu_data[0].options & MIPS_CPU_DIVEC) +#define cpu_has_divec __isa_ge_or_opt(1, MIPS_CPU_DIVEC) #endif #ifndef cpu_has_vce -#define cpu_has_vce (cpu_data[0].options & MIPS_CPU_VCE) +#define cpu_has_vce __opt(MIPS_CPU_VCE) #endif #ifndef cpu_has_cache_cdex_p -#define cpu_has_cache_cdex_p (cpu_data[0].options & MIPS_CPU_CACHE_CDEX_P) +#define cpu_has_cache_cdex_p __opt(MIPS_CPU_CACHE_CDEX_P) #endif #ifndef cpu_has_cache_cdex_s -#define cpu_has_cache_cdex_s (cpu_data[0].options & MIPS_CPU_CACHE_CDEX_S) +#define cpu_has_cache_cdex_s __opt(MIPS_CPU_CACHE_CDEX_S) #endif #ifndef cpu_has_prefetch -#define cpu_has_prefetch (cpu_data[0].options & MIPS_CPU_PREFETCH) +#define cpu_has_prefetch __isa_ge_or_opt(1, MIPS_CPU_PREFETCH) #endif #ifndef cpu_has_mcheck -#define cpu_has_mcheck (cpu_data[0].options & MIPS_CPU_MCHECK) +#define cpu_has_mcheck __isa_ge_or_opt(1, MIPS_CPU_MCHECK) #endif #ifndef cpu_has_ejtag -#define cpu_has_ejtag (cpu_data[0].options & MIPS_CPU_EJTAG) +#define cpu_has_ejtag __opt(MIPS_CPU_EJTAG) #endif #ifndef cpu_has_llsc -#define cpu_has_llsc (cpu_data[0].options & MIPS_CPU_LLSC) +#define cpu_has_llsc __isa_ge_or_opt(1, MIPS_CPU_LLSC) #endif #ifndef cpu_has_bp_ghist -#define cpu_has_bp_ghist (cpu_data[0].options & MIPS_CPU_BP_GHIST) +#define cpu_has_bp_ghist __opt(MIPS_CPU_BP_GHIST) #endif #ifndef kernel_uses_llsc #define kernel_uses_llsc cpu_has_llsc #endif #ifndef cpu_has_guestctl0ext -#define cpu_has_guestctl0ext (cpu_data[0].options & MIPS_CPU_GUESTCTL0EXT) +#define cpu_has_guestctl0ext __opt(MIPS_CPU_GUESTCTL0EXT) #endif #ifndef cpu_has_guestctl1 -#define cpu_has_guestctl1 (cpu_data[0].options & MIPS_CPU_GUESTCTL1) +#define cpu_has_guestctl1 __opt(MIPS_CPU_GUESTCTL1) #endif #ifndef cpu_has_guestctl2 -#define cpu_has_guestctl2 (cpu_data[0].options & MIPS_CPU_GUESTCTL2) +#define cpu_has_guestctl2 __opt(MIPS_CPU_GUESTCTL2) #endif #ifndef cpu_has_guestid -#define cpu_has_guestid (cpu_data[0].options & MIPS_CPU_GUESTID) +#define cpu_has_guestid __opt(MIPS_CPU_GUESTID) #endif #ifndef cpu_has_drg -#define cpu_has_drg (cpu_data[0].options & MIPS_CPU_DRG) +#define cpu_has_drg __opt(MIPS_CPU_DRG) #endif #ifndef cpu_has_mips16 -#define cpu_has_mips16 (cpu_data[0].ases & MIPS_ASE_MIPS16) +#define cpu_has_mips16 __isa_lt_and_ase(6, MIPS_ASE_MIPS16) #endif #ifndef cpu_has_mips16e2 -#define cpu_has_mips16e2 (cpu_data[0].ases & MIPS_ASE_MIPS16E2) +#define cpu_has_mips16e2 __isa_lt_and_ase(6, MIPS_ASE_MIPS16E2) #endif #ifndef cpu_has_mdmx -#define cpu_has_mdmx (cpu_data[0].ases & MIPS_ASE_MDMX) +#define cpu_has_mdmx __isa_lt_and_ase(6, MIPS_ASE_MDMX) #endif #ifndef cpu_has_mips3d -#define cpu_has_mips3d (cpu_data[0].ases & MIPS_ASE_MIPS3D) +#define cpu_has_mips3d __isa_lt_and_ase(6, MIPS_ASE_MIPS3D) #endif #ifndef cpu_has_smartmips -#define cpu_has_smartmips (cpu_data[0].ases & MIPS_ASE_SMARTMIPS) +#define cpu_has_smartmips __isa_lt_and_ase(6, MIPS_ASE_SMARTMIPS) #endif #ifndef cpu_has_rixi -#define cpu_has_rixi (cpu_data[0].options & MIPS_CPU_RIXI) +#define cpu_has_rixi __isa_ge_or_opt(6, MIPS_CPU_RIXI) #endif #ifndef cpu_has_mmips # ifdef CONFIG_SYS_SUPPORTS_MICROMIPS -# define cpu_has_mmips (cpu_data[0].options & MIPS_CPU_MICROMIPS) +# define cpu_has_mmips __opt(MIPS_CPU_MICROMIPS) # else # define cpu_has_mmips 0 # endif #endif #ifndef cpu_has_lpa -#define cpu_has_lpa (cpu_data[0].options & MIPS_CPU_LPA) +#define cpu_has_lpa __opt(MIPS_CPU_LPA) #endif #ifndef cpu_has_mvh -#define cpu_has_mvh (cpu_data[0].options & MIPS_CPU_MVH) +#define cpu_has_mvh __opt(MIPS_CPU_MVH) #endif #ifndef cpu_has_xpa #define cpu_has_xpa (cpu_has_lpa && cpu_has_mvh) @@ -338,32 +376,32 @@ #endif #ifndef cpu_has_dsp -#define cpu_has_dsp (cpu_data[0].ases & MIPS_ASE_DSP) +#define cpu_has_dsp __ase(MIPS_ASE_DSP) #endif #ifndef cpu_has_dsp2 -#define cpu_has_dsp2 (cpu_data[0].ases & MIPS_ASE_DSP2P) +#define cpu_has_dsp2 __ase(MIPS_ASE_DSP2P) #endif #ifndef cpu_has_dsp3 -#define cpu_has_dsp3 (cpu_data[0].ases & MIPS_ASE_DSP3) +#define cpu_has_dsp3 __ase(MIPS_ASE_DSP3) #endif #ifndef cpu_has_mipsmt -#define cpu_has_mipsmt (cpu_data[0].ases & MIPS_ASE_MIPSMT) +#define cpu_has_mipsmt __isa_lt_and_ase(6, MIPS_ASE_MIPSMT) #endif #ifndef cpu_has_vp -#define cpu_has_vp (cpu_data[0].options & MIPS_CPU_VP) +#define cpu_has_vp __isa_ge_and_opt(6, MIPS_CPU_VP) #endif #ifndef cpu_has_userlocal -#define cpu_has_userlocal (cpu_data[0].options & MIPS_CPU_ULRI) +#define cpu_has_userlocal __isa_ge_or_opt(6, MIPS_CPU_ULRI) #endif #ifdef CONFIG_32BIT # ifndef cpu_has_nofpuex -# define cpu_has_nofpuex (cpu_data[0].options & MIPS_CPU_NOFPUEX) +# define cpu_has_nofpuex __isa_lt_and_opt(1, MIPS_CPU_NOFPUEX) # endif # ifndef cpu_has_64bits # define cpu_has_64bits (cpu_data[0].isa_level & MIPS_CPU_ISA_64BIT) @@ -405,19 +443,19 @@ #endif #if defined(CONFIG_CPU_MIPSR2_IRQ_VI) && !defined(cpu_has_vint) -# define cpu_has_vint (cpu_data[0].options & MIPS_CPU_VINT) +# define cpu_has_vint __opt(MIPS_CPU_VINT) #elif !defined(cpu_has_vint) # define cpu_has_vint 0 #endif #if defined(CONFIG_CPU_MIPSR2_IRQ_EI) && !defined(cpu_has_veic) -# define cpu_has_veic (cpu_data[0].options & MIPS_CPU_VEIC) +# define cpu_has_veic __opt(MIPS_CPU_VEIC) #elif !defined(cpu_has_veic) # define cpu_has_veic 0 #endif #ifndef cpu_has_inclusive_pcaches -#define cpu_has_inclusive_pcaches (cpu_data[0].options & MIPS_CPU_INCLUSIVE_CACHES) +#define cpu_has_inclusive_pcaches __opt(MIPS_CPU_INCLUSIVE_CACHES) #endif #ifndef cpu_dcache_line_size @@ -438,63 +476,63 @@ #endif #ifndef cpu_has_perf_cntr_intr_bit -#define cpu_has_perf_cntr_intr_bit (cpu_data[0].options & MIPS_CPU_PCI) +#define cpu_has_perf_cntr_intr_bit __opt(MIPS_CPU_PCI) #endif #ifndef cpu_has_vz -#define cpu_has_vz (cpu_data[0].ases & MIPS_ASE_VZ) +#define cpu_has_vz __ase(MIPS_ASE_VZ) #endif #if defined(CONFIG_CPU_HAS_MSA) && !defined(cpu_has_msa) -# define cpu_has_msa (cpu_data[0].ases & MIPS_ASE_MSA) +# define cpu_has_msa __ase(MIPS_ASE_MSA) #elif !defined(cpu_has_msa) # define cpu_has_msa 0 #endif #ifndef cpu_has_ufr -# define cpu_has_ufr (cpu_data[0].options & MIPS_CPU_UFR) +# define cpu_has_ufr __opt(MIPS_CPU_UFR) #endif #ifndef cpu_has_fre -# define cpu_has_fre (cpu_data[0].options & MIPS_CPU_FRE) +# define cpu_has_fre __opt(MIPS_CPU_FRE) #endif #ifndef cpu_has_cdmm -# define cpu_has_cdmm (cpu_data[0].options & MIPS_CPU_CDMM) +# define cpu_has_cdmm __opt(MIPS_CPU_CDMM) #endif #ifndef cpu_has_small_pages -# define cpu_has_small_pages (cpu_data[0].options & MIPS_CPU_SP) +# define cpu_has_small_pages __opt(MIPS_CPU_SP) #endif #ifndef cpu_has_nan_legacy -#define cpu_has_nan_legacy (cpu_data[0].options & MIPS_CPU_NAN_LEGACY) +#define cpu_has_nan_legacy __isa_lt_and_opt(6, MIPS_CPU_NAN_LEGACY) #endif #ifndef cpu_has_nan_2008 -#define cpu_has_nan_2008 (cpu_data[0].options & MIPS_CPU_NAN_2008) +#define cpu_has_nan_2008 __isa_ge_or_opt(6, MIPS_CPU_NAN_2008) #endif #ifndef cpu_has_ebase_wg -# define cpu_has_ebase_wg (cpu_data[0].options & MIPS_CPU_EBASE_WG) +# define cpu_has_ebase_wg __opt(MIPS_CPU_EBASE_WG) #endif #ifndef cpu_has_badinstr -# define cpu_has_badinstr (cpu_data[0].options & MIPS_CPU_BADINSTR) +# define cpu_has_badinstr __isa_ge_or_opt(6, MIPS_CPU_BADINSTR) #endif #ifndef cpu_has_badinstrp -# define cpu_has_badinstrp (cpu_data[0].options & MIPS_CPU_BADINSTRP) +# define cpu_has_badinstrp __isa_ge_or_opt(6, MIPS_CPU_BADINSTRP) #endif #ifndef cpu_has_contextconfig -# define cpu_has_contextconfig (cpu_data[0].options & MIPS_CPU_CTXTC) +# define cpu_has_contextconfig __opt(MIPS_CPU_CTXTC) #endif #ifndef cpu_has_perf -# define cpu_has_perf (cpu_data[0].options & MIPS_CPU_PERF) +# define cpu_has_perf __opt(MIPS_CPU_PERF) #endif -#if defined(CONFIG_SMP) && (MIPS_ISA_REV >= 6) +#ifdef CONFIG_SMP /* * Some systems share FTLB RAMs between threads within a core (siblings in * kernel parlance). This means that FTLB entries may become invalid at almost @@ -507,7 +545,7 @@ */ # ifndef cpu_has_shared_ftlb_ram # define cpu_has_shared_ftlb_ram \ - (current_cpu_data.options & MIPS_CPU_SHARED_FTLB_RAM) + __isa_ge_and_opt(6, MIPS_CPU_SHARED_FTLB_RAM) # endif /* @@ -524,9 +562,9 @@ */ # ifndef cpu_has_shared_ftlb_entries # define cpu_has_shared_ftlb_entries \ - (current_cpu_data.options & MIPS_CPU_SHARED_FTLB_ENTRIES) + __isa_ge_and_opt(6, MIPS_CPU_SHARED_FTLB_ENTRIES) # endif -#endif /* SMP && MIPS_ISA_REV >= 6 */ +#endif /* SMP */ #ifndef cpu_has_shared_ftlb_ram # define cpu_has_shared_ftlb_ram 0 @@ -537,7 +575,7 @@ #ifdef CONFIG_MIPS_MT_SMP # define cpu_has_mipsmt_pertccounters \ - (cpu_data[0].options & MIPS_CPU_MT_PER_TC_PERF_COUNTERS) + __isa_lt_and_opt(6, MIPS_CPU_MT_PER_TC_PERF_COUNTERS) #else # define cpu_has_mipsmt_pertccounters 0 #endif /* CONFIG_MIPS_MT_SMP */ |