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Diffstat (limited to 'arch/arm64/include/asm/fpsimd.h')
-rw-r--r--arch/arm64/include/asm/fpsimd.h38
1 files changed, 33 insertions, 5 deletions
diff --git a/arch/arm64/include/asm/fpsimd.h b/arch/arm64/include/asm/fpsimd.h
index 8df46f186c..7780d343ef 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);
/*
@@ -360,6 +386,7 @@ extern void sme_alloc(struct task_struct *task, bool flush);
extern unsigned int sme_get_vl(void);
extern int sme_set_current_vl(unsigned long arg);
extern int sme_get_current_vl(void);
+extern void sme_suspend_exit(void);
/*
* Return how many bytes of memory are required to store the full SME
@@ -395,6 +422,7 @@ static inline int sme_max_vl(void) { return 0; }
static inline int sme_max_virtualisable_vl(void) { return 0; }
static inline int sme_set_current_vl(unsigned long arg) { return -EINVAL; }
static inline int sme_get_current_vl(void) { return -EINVAL; }
+static inline void sme_suspend_exit(void) { }
static inline size_t sme_state_size(struct task_struct const *task)
{