rtl88x2CE_WiFi_linux driver

hc

2024-05-10 cde9070d9970eef1f7ec2360586c802a16230ad8

 kernel/arch/arm64/include/asm/lse.h
..
..
@@ -2,56 +2,47 @@
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 #ifndef __ASM_LSE_H
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 #define __ASM_LSE_H
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-#if defined(CONFIG_AS_LSE) && defined(CONFIG_ARM64_LSE_ATOMICS)
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+#include <asm/atomic_ll_sc.h>
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+
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+#if defined(CONFIG_ARM64_LSE_ATOMICS) && !defined(BUILD_FIPS140_KO)
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 #define __LSE_PREAMBLE	".arch_extension lse\n"
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 #include <linux/compiler_types.h>
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 #include <linux/export.h>
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+#include <linux/jump_label.h>
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 #include <linux/stringify.h>
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 #include <asm/alternative.h>
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+#include <asm/atomic_lse.h>
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 #include <asm/cpucaps.h>
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-#ifdef __ASSEMBLER__
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+extern struct static_key_false cpu_hwcap_keys[ARM64_NCAPS];
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+extern struct static_key_false arm64_const_caps_ready;
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-.arch_extension	lse
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+static inline bool system_uses_lse_atomics(void)
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+{
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+	return (static_branch_likely(&arm64_const_caps_ready)) &&
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+		static_branch_likely(&cpu_hwcap_keys[ARM64_HAS_LSE_ATOMICS]);
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+}
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-.macro alt_lse, llsc, lse
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-	alternative_insn "\llsc", "\lse", ARM64_HAS_LSE_ATOMICS
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-.endm
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-
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-#else	/* __ASSEMBLER__ */
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-
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-/* Move the ll/sc atomics out-of-line */
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-#define __LL_SC_INLINE		notrace
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-#define __LL_SC_PREFIX(x)	__ll_sc_##x
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-#define __LL_SC_EXPORT(x)	EXPORT_SYMBOL(__LL_SC_PREFIX(x))
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-
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-/* Macro for constructing calls to out-of-line ll/sc atomics */
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-#define __LL_SC_CALL(op)	"bl\t" __stringify(__LL_SC_PREFIX(op)) "\n"
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-#define __LL_SC_CLOBBERS	"x16", "x17", "x30"
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+#define __lse_ll_sc_body(op, ...)					\
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+({									\
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+	system_uses_lse_atomics() ?					\
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+		__lse_##op(__VA_ARGS__) :				\
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+		__ll_sc_##op(__VA_ARGS__);				\
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+})
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 /* In-line patching at runtime */
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 #define ARM64_LSE_ATOMIC_INSN(llsc, lse)				\
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 	ALTERNATIVE(llsc, __LSE_PREAMBLE lse, ARM64_HAS_LSE_ATOMICS)
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-#endif	/* __ASSEMBLER__ */
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-#else	/* CONFIG_AS_LSE && CONFIG_ARM64_LSE_ATOMICS */
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+#else	/* CONFIG_ARM64_LSE_ATOMICS */
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-#ifdef __ASSEMBLER__
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+static inline bool system_uses_lse_atomics(void) { return false; }
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-.macro alt_lse, llsc, lse
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-	\llsc
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-.endm
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-
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-#else	/* __ASSEMBLER__ */
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-
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-#define __LL_SC_INLINE		static inline
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-#define __LL_SC_PREFIX(x)	x
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-#define __LL_SC_EXPORT(x)
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+#define __lse_ll_sc_body(op, ...)		__ll_sc_##op(__VA_ARGS__)
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 #define ARM64_LSE_ATOMIC_INSN(llsc, lse)	llsc
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-#endif	/* __ASSEMBLER__ */
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-#endif	/* CONFIG_AS_LSE && CONFIG_ARM64_LSE_ATOMICS */
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+#endif	/* CONFIG_ARM64_LSE_ATOMICS */
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 #endif	/* __ASM_LSE_H */