/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2003, 2004 Ralf Baechle
* Copyright (C) 2004 Maciej W. Rozycki
*/
#ifndef __ASM_CPU_FEATURES_H
#define __ASM_CPU_FEATURES_H
#include <asm/cpu.h>
#include <asm/cpu-info.h>
#include <asm/isa-rev.h>
#include <cpu-feature-overrides.h>
#define __ase(ase) (cpu_data[0].ases & (ase))
#define __isa(isa) (cpu_data[0].isa_level & (isa))
#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))
/*
* Similarly allow for ISA level checks that take into account knowledge of the
* ISA targeted by the kernel build, provided by MIPS_ISA_REV.
*/
#define __isa_ge_and_flag(isa, flag) ((MIPS_ISA_REV >= (isa)) && __isa(flag))
#define __isa_ge_or_flag(isa, flag) ((MIPS_ISA_REV >= (isa)) || __isa(flag))
#define __isa_lt_and_flag(isa, flag) ((MIPS_ISA_REV < (isa)) && __isa(flag))
#define __isa_range(ge, lt) \
((MIPS_ISA_REV >= (ge)) && (MIPS_ISA_REV < (lt)))
#define __isa_range_or_flag(ge, lt, flag) \
(__isa_range(ge, lt) || ((MIPS_ISA_REV < (lt)) && __isa(flag)))
#define __isa_range_and_ase(ge, lt, ase) \
(__isa_range(ge, lt) && __ase(ase))
/*
* 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 __opt(MIPS_CPU_TLB)
#endif
#ifndef cpu_has_ftlb
#define cpu_has_ftlb __opt(MIPS_CPU_FTLB)
#endif
#ifndef cpu_has_tlbinv
#define cpu_has_tlbinv __opt(MIPS_CPU_TLBINV)
#endif
#ifndef cpu_has_segments
#define cpu_has_segments __opt(MIPS_CPU_SEGMENTS)
#endif
#ifndef cpu_has_eva
#define cpu_has_eva __opt(MIPS_CPU_EVA)
#endif
#ifndef cpu_has_htw
#define cpu_has_htw __opt(MIPS_CPU_HTW)
#endif
#ifndef cpu_has_ldpte
#define cpu_has_ldpte __opt(MIPS_CPU_LDPTE)
#endif
#ifndef cpu_has_rixiex
#define cpu_has_rixiex __isa_ge_or_opt(6, MIPS_CPU_RIXIEX)
#endif
#ifndef cpu_has_maar
#define cpu_has_maar __opt(MIPS_CPU_MAAR)
#endif
#ifndef cpu_has_rw_llb
#define cpu_has_rw_llb __isa_ge_or_opt(6, MIPS_CPU_RW_LLB)
#endif
/*
* For the moment we don't consider R6000 and R8000 so we can assume that
* anything that doesn't support R4000-style exceptions and interrupts is
* R3000-like. Users should still treat these two macro definitions as
* opaque.
*/
#ifndef cpu_has_3kex
#define cpu_has_3kex (!cpu_has_4kex)
#endif
#ifndef cpu_has_4kex
#define cpu_has_4kex __isa_ge_or_opt(1, MIPS_CPU_4KEX)
#endif
#ifndef cpu_has_3k_cache
#define cpu_has_3k_cache __isa_lt_and_opt(1, MIPS_CPU_3K_CACHE)
#endif
#ifndef cpu_has_4k_cache
#define cpu_has_4k_cache __opt(MIPS_CPU_4K_CACHE)
#endif
#ifndef cpu_has_octeon_cache
#define cpu_has_octeon_cache \
({ \
int __res; \
\
switch (boot_cpu_type()) { \
case CPU_CAVIUM_OCTEON: \
case CPU_CAVIUM_OCTEON_PLUS: \
case CPU_CAVIUM_OCTEON2: \
case CPU_CAVIUM_OCTEON3: \
__res = 1; \
break; \
\
default: \
__res = 0; \
} \
\
__res; \
})
#endif
/* Don't override `cpu_has_fpu' to 1 or the "nofpu" option won't work. */
#ifndef cpu_has_fpu
# ifdef CONFIG_MIPS_FP_SUPPORT
# define cpu_has_fpu (current_cpu_data.options & MIPS_CPU_FPU)
# define raw_cpu_has_fpu (raw_current_cpu_data.options & MIPS_CPU_FPU)
# else
# define cpu_has_fpu 0
# define raw_cpu_has_fpu 0
# endif
#else
# if cpu_has_fpu
# error "Forcing `cpu_has_fpu' to non-zero is not supported"
# endif
# define raw_cpu_has_fpu cpu_has_fpu
#endif
#ifndef cpu_has_32fpr
#define cpu_has_32fpr __isa_ge_or_opt(1, MIPS_CPU_32FPR)
#endif
#ifndef cpu_has_counter
#define cpu_has_counter __opt(MIPS_CPU_COUNTER)
#endif
#ifndef cpu_has_watch
#define cpu_has_watch __opt(MIPS_CPU_WATCH)
#endif
#ifndef cpu_has_divec
#define cpu_has_divec __isa_ge_or_opt(1, MIPS_CPU_DIVEC)
#endif
#ifndef cpu_has_vce
#define cpu_has_vce __opt(MIPS_CPU_VCE)
#endif
#ifndef cpu_has_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 __opt(MIPS_CPU_CACHE_CDEX_S)
#endif
#ifndef cpu_has_prefetch
#define cpu_has_prefetch __isa_ge_or_opt(1, MIPS_CPU_PREFETCH)
#endif
#ifndef cpu_has_mcheck
#define cpu_has_mcheck __isa_ge_or_opt(1, MIPS_CPU_MCHECK)
#endif
#ifndef cpu_has_ejtag
#define cpu_has_ejtag __opt(MIPS_CPU_EJTAG)
#endif
#ifndef cpu_has_llsc
#define cpu_has_llsc __isa_ge_or_opt(1, MIPS_CPU_LLSC)
#endif
#ifndef kernel_uses_llsc
#define kernel_uses_llsc cpu_has_llsc
#endif
#ifndef cpu_has_guestctl0ext
#define cpu_has_guestctl0ext __opt(MIPS_CPU_GUESTCTL0EXT)
#endif
#ifndef cpu_has_guestctl1
#define cpu_has_guestctl1 __opt(MIPS_CPU_GUESTCTL1)
#endif
#ifndef cpu_has_guestctl2
#define cpu_has_guestctl2 __opt(MIPS_CPU_GUESTCTL2)
#endif
#ifndef cpu_has_guestid
#define cpu_has_guestid __opt(MIPS_CPU_GUESTID)
#endif
#ifndef cpu_has_drg
#define cpu_has_drg __opt(MIPS_CPU_DRG)
#endif
#ifndef cpu_has_mips16
#define cpu_has_mips16 __isa_lt_and_ase(6, MIPS_ASE_MIPS16)
#endif
#ifndef cpu_has_mips16e2
#define cpu_has_mips16e2 __isa_lt_and_ase(6, MIPS_ASE_MIPS16E2)
#endif
#ifndef cpu_has_mdmx
#define cpu_has_mdmx __isa_lt_and_ase(6, MIPS_ASE_MDMX)
#endif
#ifndef cpu_has_mips3d
#define cpu_has_mips3d __isa_lt_and_ase(6, MIPS_ASE_MIPS3D)
#endif
#ifndef cpu_has_smartmips
#define cpu_has_smartmips __isa_lt_and_ase(6, MIPS_ASE_SMARTMIPS)
#endif
#ifndef cpu_has_rixi
#define cpu_has_rixi __isa_ge_or_opt(6, MIPS_CPU_RIXI)
#endif
#ifndef cpu_has_mmips
# if defined(__mips_micromips)
# define cpu_has_mmips 1
# elif defined(CONFIG_SYS_SUPPORTS_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 __opt(MIPS_CPU_LPA)
#endif
#ifndef cpu_has_mvh
#define cpu_has_mvh __opt(MIPS_CPU_MVH)
#endif
#ifndef cpu_has_xpa
#define cpu_has_xpa (cpu_has_lpa && cpu_has_mvh)
#endif
#ifndef cpu_has_vtag_icache
#define cpu_has_vtag_icache (cpu_data[0].icache.flags & MIPS_CACHE_VTAG)
#endif
#ifndef cpu_has_dc_aliases
#define cpu_has_dc_aliases (cpu_data[0].dcache.flags & MIPS_CACHE_ALIASES)
#endif
#ifndef cpu_has_ic_fills_f_dc
#define cpu_has_ic_fills_f_dc (cpu_data[0].icache.flags & MIPS_CACHE_IC_F_DC)
#endif
#ifndef cpu_has_pindexed_dcache
#define cpu_has_pindexed_dcache (cpu_data[0].dcache.flags & MIPS_CACHE_PINDEX)
#endif
/*
* I-Cache snoops remote store. This only matters on SMP. Some multiprocessors
* such as the R10000 have I-Caches that snoop local stores; the embedded ones
* don't. For maintaining I-cache coherency this means we need to flush the
* D-cache all the way back to whever the I-cache does refills from, so the
* I-cache has a chance to see the new data at all. Then we have to flush the
* I-cache also.
* Note we may have been rescheduled and may no longer be running on the CPU
* that did the store so we can't optimize this into only doing the flush on
* the local CPU.
*/
#ifndef cpu_icache_snoops_remote_store
#ifdef CONFIG_SMP
#define cpu_icache_snoops_remote_store (cpu_data[0].icache.flags & MIPS_IC_SNOOPS_REMOTE)
#else
#define cpu_icache_snoops_remote_store 1
#endif
#endif
#ifndef cpu_has_mips_1
# define cpu_has_mips_1 (MIPS_ISA_REV < 6)
#endif
#ifndef cpu_has_mips_2
# define cpu_has_mips_2 __isa_lt_and_flag(6, MIPS_CPU_ISA_II)
#endif
#ifndef cpu_has_mips_3
# define cpu_has_mips_3 __isa_lt_and_flag(6, MIPS_CPU_ISA_III)
#endif
#ifndef cpu_has_mips_4
# define cpu_has_mips_4 __isa_lt_and_flag(6, MIPS_CPU_ISA_IV)
#endif
#ifndef cpu_has_mips_5
# define cpu_has_mips_5 __isa_lt_and_flag(6, MIPS_CPU_ISA_V)
#endif
#ifndef cpu_has_mips32r1
# define cpu_has_mips32r1 __isa_range_or_flag(1, 6, MIPS_CPU_ISA_M32R1)
#endif
#ifndef cpu_has_mips32r2
# define cpu_has_mips32r2 __isa_range_or_flag(2, 6, MIPS_CPU_ISA_M32R2)
#endif
#ifndef cpu_has_mips32r5
# define cpu_has_mips32r5 __isa_range_or_flag(5, 6, MIPS_CPU_ISA_M32R5)
#endif
#ifndef cpu_has_mips32r6
# define cpu_has_mips32r6 __isa_ge_or_flag(6, MIPS_CPU_ISA_M32R6)
#endif
#ifndef cpu_has_mips64r1
# define cpu_has_mips64r1 (cpu_has_64bits && \
__isa_range_or_flag(1, 6, MIPS_CPU_ISA_M64R1))
#endif
#ifndef cpu_has_mips64r2
# define cpu_has_mips64r2 (cpu_has_64bits && \
__isa_range_or_flag(2, 6, MIPS_CPU_ISA_M64R2))
#endif
#ifndef cpu_has_mips64r5
# define cpu_has_mips64r5 (cpu_has_64bits && \
__isa_range_or_flag(5, 6, MIPS_CPU_ISA_M64R5))
#endif
#ifndef cpu_has_mips64r6
# define cpu_has_mips64r6 __isa_ge_and_flag(6, MIPS_CPU_ISA_M64R6)
#endif
/*
* Shortcuts ...
*/
#define cpu_has_mips_2_3_4_5 (cpu_has_mips_2 | cpu_has_mips_3_4_5)
#define cpu_has_mips_3_4_5 (cpu_has_mips_3 | cpu_has_mips_4_5)
#define cpu_has_mips_4_5 (cpu_has_mips_4 | cpu_has_mips_5)
#define cpu_has_mips_2_3_4_5_r (cpu_has_mips_2 | cpu_has_mips_3_4_5_r)
#define cpu_has_mips_3_4_5_r (cpu_has_mips_3 | cpu_has_mips_4_5_r)
#define cpu_has_mips_4_5_r (cpu_has_mips_4 | cpu_has_mips_5_r)
#define cpu_has_mips_5_r (cpu_has_mips_5 | cpu_has_mips_r)
#define cpu_has_mips_3_4_5_64_r2_r6 \
(cpu_has_mips_3 | cpu_has_mips_4_5_64_r2_r6)
#define cpu_has_mips_4_5_64_r2_r6 \
(cpu_has_mips_4_5 | cpu_has_mips64r1 | \
cpu_has_mips_r2 | cpu_has_mips_r5 | \
cpu_has_mips_r6)
#define cpu_has_mips32 (cpu_has_mips32r1 | cpu_has_mips32r2 | \
cpu_has_mips32r5 | cpu_has_mips32r6)
#define cpu_has_mips64 (cpu_has_mips64r1 | cpu_has_mips64r2 | \
cpu_has_mips64r5 | cpu_has_mips64r6)
#define cpu_has_mips_r1 (cpu_has_mips32r1 | cpu_has_mips64r1)
#define cpu_has_mips_r2 (cpu_has_mips32r2 | cpu_has_mips64r2)
#define cpu_has_mips_r5 (cpu_has_mips32r5 | cpu_has_mips64r5)
#define cpu_has_mips_r6 (cpu_has_mips32r6 | cpu_has_mips64r6)
#define cpu_has_mips_r (cpu_has_mips32r1 | cpu_has_mips32r2 | \
cpu_has_mips32r5 | cpu_has_mips32r6 | \
cpu_has_mips64r1 | cpu_has_mips64r2 | \
cpu_has_mips64r5 | cpu_has_mips64r6)
/* MIPSR2 - MIPSR6 have a lot of similarities */
#define cpu_has_mips_r2_r6 (cpu_has_mips_r2 | cpu_has_mips_r5 | \
cpu_has_mips_r6)
/*
* cpu_has_mips_r2_exec_hazard - return if IHB is required on current processor
*
* Returns non-zero value if the current processor implementation requires
* an IHB instruction to deal with an instruction hazard as per MIPS R2
* architecture specification, zero otherwise.
*/
#ifndef cpu_has_mips_r2_exec_hazard
#define cpu_has_mips_r2_exec_hazard \
({ \
int __res; \
\
switch (boot_cpu_type()) { \
case CPU_M14KC: \
case CPU_74K: \
case CPU_1074K: \
case CPU_PROAPTIV: \
case CPU_P5600: \
case CPU_M5150: \
case CPU_QEMU_GENERIC: \
case CPU_CAVIUM_OCTEON: \
case CPU_CAVIUM_OCTEON_PLUS: \
case CPU_CAVIUM_OCTEON2: \
case CPU_CAVIUM_OCTEON3: \
__res = 0; \
break; \
\
default: \
__res = 1; \
} \
\
__res; \
})
#endif
/*
* MIPS32, MIPS64, VR5500, IDT32332, IDT32334 and maybe a few other
* pre-MIPS32/MIPS64 processors have CLO, CLZ. The IDT RC64574 is 64-bit and
* has CLO and CLZ but not DCLO nor DCLZ. For 64-bit kernels
* cpu_has_clo_clz also indicates the availability of DCLO and DCLZ.
*/
#ifndef cpu_has_clo_clz
#define cpu_has_clo_clz cpu_has_mips_r
#endif
/*
* MIPS32 R2, MIPS64 R2, Loongson 3A and Octeon have WSBH.
* MIPS64 R2, Loongson 3A and Octeon have WSBH, DSBH and DSHD.
* This indicates the availability of WSBH and in case of 64 bit CPUs also
* DSBH and DSHD.
*/
#ifndef cpu_has_wsbh
#define cpu_has_wsbh cpu_has_mips_r2
#endif
#ifndef cpu_has_dsp
#define cpu_has_dsp __ase(MIPS_ASE_DSP)
#endif
#ifndef cpu_has_dsp2
#define cpu_has_dsp2 __ase(MIPS_ASE_DSP2P)
#endif
#ifndef cpu_has_dsp3
#define cpu_has_dsp3 __ase(MIPS_ASE_DSP3)
#endif
#ifndef cpu_has_loongson_mmi
#define cpu_has_loongson_mmi __ase(MIPS_ASE_LOONGSON_MMI)
#endif
#ifndef cpu_has_loongson_cam
#define cpu_has_loongson_cam __ase(MIPS_ASE_LOONGSON_CAM)
#endif
#ifndef cpu_has_loongson_ext
#define cpu_has_loongson_ext __ase(MIPS_ASE_LOONGSON_EXT)
#endif
#ifndef cpu_has_loongson_ext2
#define cpu_has_loongson_ext2 __ase(MIPS_ASE_LOONGSON_EXT2)
#endif
#ifndef cpu_has_mipsmt
#define cpu_has_mipsmt __isa_range_and_ase(2, 6, MIPS_ASE_MIPSMT)
#endif
#ifndef cpu_has_vp
#define cpu_has_vp __isa_ge_and_opt(6, MIPS_CPU_VP)
#endif
#ifndef cpu_has_userlocal
#define cpu_has_userlocal __isa_ge_or_opt(6, MIPS_CPU_ULRI)
#endif
#ifdef CONFIG_32BIT
# ifndef cpu_has_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)
# endif
# ifndef cpu_has_64bit_zero_reg
# define cpu_has_64bit_zero_reg (cpu_data[0].isa_level & MIPS_CPU_ISA_64BIT)
# endif
# ifndef cpu_has_64bit_gp_regs
# define cpu_has_64bit_gp_regs 0
# endif
# ifndef cpu_vmbits
# define cpu_vmbits 31
# endif
#endif
#ifdef CONFIG_64BIT
# ifndef cpu_has_nofpuex
# define cpu_has_nofpuex 0
# endif
# ifndef cpu_has_64bits
# define cpu_has_64bits 1
# endif
# ifndef cpu_has_64bit_zero_reg
# define cpu_has_64bit_zero_reg 1
# endif
# ifndef cpu_has_64bit_gp_regs
# define cpu_has_64bit_gp_regs 1
# endif
# ifndef cpu_vmbits
# define cpu_vmbits cpu_data[0].vmbits
# define __NEED_VMBITS_PROBE
# endif
#endif
#if defined(CONFIG_CPU_MIPSR2_IRQ_VI) && !defined(cpu_has_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 __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 __opt(MIPS_CPU_INCLUSIVE_CACHES)
#endif
#ifndef cpu_dcache_line_size
#define cpu_dcache_line_size() cpu_data[0].dcache.linesz
#endif
#ifndef cpu_icache_line_size
#define cpu_icache_line_size() cpu_data[0].icache.linesz
#endif
#ifndef cpu_scache_line_size
#define cpu_scache_line_size() cpu_data[0].scache.linesz
#endif
#ifndef cpu_tcache_line_size
#define cpu_tcache_line_size() cpu_data[0].tcache.linesz
#endif
#ifndef cpu_hwrena_impl_bits
#define cpu_hwrena_impl_bits 0
#endif
#ifndef cpu_has_perf_cntr_intr_bit
#define cpu_has_perf_cntr_intr_bit __opt(MIPS_CPU_PCI)
#endif
#ifndef cpu_has_vz
#define cpu_has_vz __ase(MIPS_ASE_VZ)
#endif
#if defined(CONFIG_CPU_HAS_MSA) && !defined(cpu_has_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 __opt(MIPS_CPU_UFR)
#endif
#ifndef cpu_has_fre
# define cpu_has_fre __opt(MIPS_CPU_FRE)
#endif
#ifndef cpu_has_cdmm
# define cpu_has_cdmm __opt(MIPS_CPU_CDMM)
#endif
#ifndef cpu_has_small_pages
# define cpu_has_small_pages __opt(MIPS_CPU_SP)
#endif
#ifndef cpu_has_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 __isa_ge_or_opt(6, MIPS_CPU_NAN_2008)
#endif
#ifndef cpu_has_ebase_wg
# define cpu_has_ebase_wg __opt(MIPS_CPU_EBASE_WG)
#endif
#ifndef cpu_has_badinstr
# define cpu_has_badinstr __isa_ge_or_opt(6, MIPS_CPU_BADINSTR)
#endif
#ifndef cpu_has_badinstrp
# define cpu_has_badinstrp __isa_ge_or_opt(6, MIPS_CPU_BADINSTRP)
#endif
#ifndef cpu_has_contextconfig
# define cpu_has_contextconfig __opt(MIPS_CPU_CTXTC)
#endif
#ifndef cpu_has_perf
# define cpu_has_perf __opt(MIPS_CPU_PERF)
#endif
#ifndef cpu_has_mac2008_only
# define cpu_has_mac2008_only __opt(MIPS_CPU_MAC_2008_ONLY)
#endif
#ifndef cpu_has_ftlbparex
# define cpu_has_ftlbparex __opt(MIPS_CPU_FTLBPAREX)
#endif
#ifndef cpu_has_gsexcex
# define cpu_has_gsexcex __opt(MIPS_CPU_GSEXCEX)
#endif
#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
* any point when an entry is evicted due to a sibling thread writing an entry
* to the shared FTLB RAM.
*
* This is only relevant to SMP systems, and the only systems that exhibit this
* property implement MIPSr6 or higher so we constrain support for this to
* kernels that will run on such systems.
*/
# ifndef cpu_has_shared_ftlb_ram
# define cpu_has_shared_ftlb_ram \
__isa_ge_and_opt(6, MIPS_CPU_SHARED_FTLB_RAM)
# endif
/*
* Some systems take this a step further & share FTLB entries between siblings.
* This is implemented as TLB writes happening as usual, but if an entry
* written by a sibling exists in the shared FTLB for a translation which would
* otherwise cause a TLB refill exception then the CPU will use the entry
* written by its sibling rather than triggering a refill & writing a matching
* TLB entry for itself.
*
* This is naturally only valid if a TLB entry is known to be suitable for use
* on all siblings in a CPU, and so it only takes effect when MMIDs are in use
* rather than ASIDs or when a TLB entry is marked global.
*/
# ifndef cpu_has_shared_ftlb_entries
# define cpu_has_shared_ftlb_entries \
__isa_ge_and_opt(6, MIPS_CPU_SHARED_FTLB_ENTRIES)
# endif
#endif /* SMP */
#ifndef cpu_has_shared_ftlb_ram
# define cpu_has_shared_ftlb_ram 0
#endif
#ifndef cpu_has_shared_ftlb_entries
# define cpu_has_shared_ftlb_entries 0
#endif
#ifdef CONFIG_MIPS_MT_SMP
# define cpu_has_mipsmt_pertccounters \
__isa_lt_and_opt(6, MIPS_CPU_MT_PER_TC_PERF_COUNTERS)
#else
# define cpu_has_mipsmt_pertccounters 0
#endif /* CONFIG_MIPS_MT_SMP */
/*
* We only enable MMID support for configurations which natively support 64 bit
* atomics because getting good performance from the allocator relies upon
* efficient atomic64_*() functions.
*/
#ifndef cpu_has_mmid
# ifdef CONFIG_GENERIC_ATOMIC64
# define cpu_has_mmid 0
# else
# define cpu_has_mmid __isa_ge_and_opt(6, MIPS_CPU_MMID)
# endif
#endif
#ifndef cpu_has_mm_sysad
# define cpu_has_mm_sysad __opt(MIPS_CPU_MM_SYSAD)
#endif
#ifndef cpu_has_mm_full
# define cpu_has_mm_full __opt(MIPS_CPU_MM_FULL)
#endif
/*
* Guest capabilities
*/
#ifndef cpu_guest_has_conf1
#define cpu_guest_has_conf1 (cpu_data[0].guest.conf & (1 << 1))
#endif
#ifndef cpu_guest_has_conf2
#define cpu_guest_has_conf2 (cpu_data[0].guest.conf & (1 << 2))
#endif
#ifndef cpu_guest_has_conf3
#define cpu_guest_has_conf3 (cpu_data[0].guest.conf & (1 << 3))
#endif
#ifndef cpu_guest_has_conf4
#define cpu_guest_has_conf4 (cpu_data[0].guest.conf & (1 << 4))
#endif
#ifndef cpu_guest_has_conf5
#define cpu_guest_has_conf5 (cpu_data[0].guest.conf & (1 << 5))
#endif
#ifndef cpu_guest_has_conf6
#define cpu_guest_has_conf6 (cpu_data[0].guest.conf & (1 << 6))
#endif
#ifndef cpu_guest_has_conf7
#define cpu_guest_has_conf7 (cpu_data[0].guest.conf & (1 << 7))
#endif
#ifndef cpu_guest_has_fpu
#define cpu_guest_has_fpu (cpu_data[0].guest.options & MIPS_CPU_FPU)
#endif
#ifndef cpu_guest_has_watch
#define cpu_guest_has_watch (cpu_data[0].guest.options & MIPS_CPU_WATCH)
#endif
#ifndef cpu_guest_has_contextconfig
#define cpu_guest_has_contextconfig (cpu_data[0].guest.options & MIPS_CPU_CTXTC)
#endif
#ifndef cpu_guest_has_segments
#define cpu_guest_has_segments (cpu_data[0].guest.options & MIPS_CPU_SEGMENTS)
#endif
#ifndef cpu_guest_has_badinstr
#define cpu_guest_has_badinstr (cpu_data[0].guest.options & MIPS_CPU_BADINSTR)
#endif
#ifndef cpu_guest_has_badinstrp
#define cpu_guest_has_badinstrp (cpu_data[0].guest.options & MIPS_CPU_BADINSTRP)
#endif
#ifndef cpu_guest_has_htw
#define cpu_guest_has_htw (cpu_data[0].guest.options & MIPS_CPU_HTW)
#endif
#ifndef cpu_guest_has_ldpte
#define cpu_guest_has_ldpte (cpu_data[0].guest.options & MIPS_CPU_LDPTE)
#endif
#ifndef cpu_guest_has_mvh
#define cpu_guest_has_mvh (cpu_data[0].guest.options & MIPS_CPU_MVH)
#endif
#ifndef cpu_guest_has_msa
#define cpu_guest_has_msa (cpu_data[0].guest.ases & MIPS_ASE_MSA)
#endif
#ifndef cpu_guest_has_kscr
#define cpu_guest_has_kscr(n) (cpu_data[0].guest.kscratch_mask & (1u << (n)))
#endif
#ifndef cpu_guest_has_rw_llb
#define cpu_guest_has_rw_llb (cpu_has_mips_r6 || (cpu_data[0].guest.options & MIPS_CPU_RW_LLB))
#endif
#ifndef cpu_guest_has_perf
#define cpu_guest_has_perf (cpu_data[0].guest.options & MIPS_CPU_PERF)
#endif
#ifndef cpu_guest_has_maar
#define cpu_guest_has_maar (cpu_data[0].guest.options & MIPS_CPU_MAAR)
#endif
#ifndef cpu_guest_has_userlocal
#define cpu_guest_has_userlocal (cpu_data[0].guest.options & MIPS_CPU_ULRI)
#endif
/*
* Guest dynamic capabilities
*/
#ifndef cpu_guest_has_dyn_fpu
#define cpu_guest_has_dyn_fpu (cpu_data[0].guest.options_dyn & MIPS_CPU_FPU)
#endif
#ifndef cpu_guest_has_dyn_watch
#define cpu_guest_has_dyn_watch (cpu_data[0].guest.options_dyn & MIPS_CPU_WATCH)
#endif
#ifndef cpu_guest_has_dyn_contextconfig
#define cpu_guest_has_dyn_contextconfig (cpu_data[0].guest.options_dyn & MIPS_CPU_CTXTC)
#endif
#ifndef cpu_guest_has_dyn_perf
#define cpu_guest_has_dyn_perf (cpu_data[0].guest.options_dyn & MIPS_CPU_PERF)
#endif
#ifndef cpu_guest_has_dyn_msa
#define cpu_guest_has_dyn_msa (cpu_data[0].guest.ases_dyn & MIPS_ASE_MSA)
#endif
#ifndef cpu_guest_has_dyn_maar
#define cpu_guest_has_dyn_maar (cpu_data[0].guest.options_dyn & MIPS_CPU_MAAR)
#endif
#endif /* __ASM_CPU_FEATURES_H */
