arch/loongarch/include/asm/cpu-features.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Copyright (C) 2020-2022 Loongson Technology Corporation Limited
   4  *
   5  * Derived from MIPS:
   6  * Copyright (C) 2003, 2004 Ralf Baechle
   7  * Copyright (C) 2004  Maciej W. Rozycki
   8  */
   9 #ifndef __ASM_CPU_FEATURES_H
  10 #define __ASM_CPU_FEATURES_H
  11
  12 #include <asm/cpu.h>
  13 #include <asm/cpu-info.h>
  14
  15 #define cpu_opt(opt)                    (cpu_data[0].options & (opt))
  16 #define cpu_has(feat)                   (cpu_data[0].options & BIT_ULL(feat))
  17
  18 #define cpu_has_loongarch               (cpu_has_loongarch32 | cpu_has_loongarch64)
  19 #define cpu_has_loongarch32             (cpu_data[0].isa_level & LOONGARCH_CPU_ISA_32BIT)
  20 #define cpu_has_loongarch64             (cpu_data[0].isa_level & LOONGARCH_CPU_ISA_64BIT)
  21
  22 #define cpu_icache_line_size()          cpu_data[0].icache.linesz
  23 #define cpu_dcache_line_size()          cpu_data[0].dcache.linesz
  24 #define cpu_vcache_line_size()          cpu_data[0].vcache.linesz
  25 #define cpu_scache_line_size()          cpu_data[0].scache.linesz
  26
  27 #ifdef CONFIG_32BIT
  28 # define cpu_has_64bits                 (cpu_data[0].isa_level & LOONGARCH_CPU_ISA_64BIT)
  29 # define cpu_vabits                     31
  30 # define cpu_pabits                     31
  31 #endif
  32
  33 #ifdef CONFIG_64BIT
  34 # define cpu_has_64bits                 1
  35 # define cpu_vabits                     cpu_data[0].vabits
  36 # define cpu_pabits                     cpu_data[0].pabits
  37 # define __NEED_ADDRBITS_PROBE
  38 #endif
  39
  40 /*
  41  * SMP assumption: Options of CPU 0 are a superset of all processors.
  42  * This is true for all known LoongArch systems.
  43  */
  44 #define cpu_has_cpucfg          cpu_opt(LOONGARCH_CPU_CPUCFG)
  45 #define cpu_has_lam             cpu_opt(LOONGARCH_CPU_LAM)
  46 #define cpu_has_ual             cpu_opt(LOONGARCH_CPU_UAL)
  47 #define cpu_has_fpu             cpu_opt(LOONGARCH_CPU_FPU)
  48 #define cpu_has_lsx             cpu_opt(LOONGARCH_CPU_LSX)
  49 #define cpu_has_lasx            cpu_opt(LOONGARCH_CPU_LASX)
  50 #define cpu_has_complex         cpu_opt(LOONGARCH_CPU_COMPLEX)
  51 #define cpu_has_crypto          cpu_opt(LOONGARCH_CPU_CRYPTO)
  52 #define cpu_has_lvz             cpu_opt(LOONGARCH_CPU_LVZ)
  53 #define cpu_has_lbt_x86         cpu_opt(LOONGARCH_CPU_LBT_X86)
  54 #define cpu_has_lbt_arm         cpu_opt(LOONGARCH_CPU_LBT_ARM)
  55 #define cpu_has_lbt_mips        cpu_opt(LOONGARCH_CPU_LBT_MIPS)
  56 #define cpu_has_lbt             (cpu_has_lbt_x86|cpu_has_lbt_arm|cpu_has_lbt_mips)
  57 #define cpu_has_csr             cpu_opt(LOONGARCH_CPU_CSR)
  58 #define cpu_has_tlb             cpu_opt(LOONGARCH_CPU_TLB)
  59 #define cpu_has_watch           cpu_opt(LOONGARCH_CPU_WATCH)
  60 #define cpu_has_vint            cpu_opt(LOONGARCH_CPU_VINT)
  61 #define cpu_has_csripi          cpu_opt(LOONGARCH_CPU_CSRIPI)
  62 #define cpu_has_extioi          cpu_opt(LOONGARCH_CPU_EXTIOI)
  63 #define cpu_has_prefetch        cpu_opt(LOONGARCH_CPU_PREFETCH)
  64 #define cpu_has_pmp             cpu_opt(LOONGARCH_CPU_PMP)
  65 #define cpu_has_perf            cpu_opt(LOONGARCH_CPU_PMP)
  66 #define cpu_has_scalefreq       cpu_opt(LOONGARCH_CPU_SCALEFREQ)
  67 #define cpu_has_flatmode        cpu_opt(LOONGARCH_CPU_FLATMODE)
  68 #define cpu_has_eiodecode       cpu_opt(LOONGARCH_CPU_EIODECODE)
  69 #define cpu_has_guestid         cpu_opt(LOONGARCH_CPU_GUESTID)
  70 #define cpu_has_hypervisor      cpu_opt(LOONGARCH_CPU_HYPERVISOR)
  71
  72
  73 #endif /* __ASM_CPU_FEATURES_H */