diff options
Diffstat (limited to 'arch/arm64/include/asm/fpsimd.h')
| -rw-r--r-- | arch/arm64/include/asm/fpsimd.h | 36 |
1 files changed, 31 insertions, 5 deletions
diff --git a/arch/arm64/include/asm/fpsimd.h b/arch/arm64/include/asm/fpsimd.h index 8df46f186c64..50e5f25d3024 100644 --- a/arch/arm64/include/asm/fpsimd.h +++ b/arch/arm64/include/asm/fpsimd.h @@ -32,6 +32,32 @@ #define VFP_STATE_SIZE ((32 * 8) + 4) #endif +static inline unsigned long cpacr_save_enable_kernel_sve(void) +{ + unsigned long old = read_sysreg(cpacr_el1); + unsigned long set = CPACR_EL1_FPEN_EL1EN | CPACR_EL1_ZEN_EL1EN; + + write_sysreg(old | set, cpacr_el1); + isb(); + return old; +} + +static inline unsigned long cpacr_save_enable_kernel_sme(void) +{ + unsigned long old = read_sysreg(cpacr_el1); + unsigned long set = CPACR_EL1_FPEN_EL1EN | CPACR_EL1_SMEN_EL1EN; + + write_sysreg(old | set, cpacr_el1); + isb(); + return old; +} + +static inline void cpacr_restore(unsigned long cpacr) +{ + write_sysreg(cpacr, cpacr_el1); + isb(); +} + /* * When we defined the maximum SVE vector length we defined the ABI so * that the maximum vector length included all the reserved for future @@ -123,12 +149,12 @@ extern void sme_save_state(void *state, int zt); extern void sme_load_state(void const *state, int zt); struct arm64_cpu_capabilities; -extern void sve_kernel_enable(const struct arm64_cpu_capabilities *__unused); -extern void sme_kernel_enable(const struct arm64_cpu_capabilities *__unused); -extern void sme2_kernel_enable(const struct arm64_cpu_capabilities *__unused); -extern void fa64_kernel_enable(const struct arm64_cpu_capabilities *__unused); +extern void cpu_enable_fpsimd(const struct arm64_cpu_capabilities *__unused); +extern void cpu_enable_sve(const struct arm64_cpu_capabilities *__unused); +extern void cpu_enable_sme(const struct arm64_cpu_capabilities *__unused); +extern void cpu_enable_sme2(const struct arm64_cpu_capabilities *__unused); +extern void cpu_enable_fa64(const struct arm64_cpu_capabilities *__unused); -extern u64 read_zcr_features(void); extern u64 read_smcr_features(void); /* |