Merge remote-tracking branch 'regulator/fix/qcom-spmi' into regulator-linus
[sfrench/cifs-2.6.git] / arch / arm64 / include / asm / lse.h
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __ASM_LSE_H
3 #define __ASM_LSE_H
4
5 #if defined(CONFIG_AS_LSE) && defined(CONFIG_ARM64_LSE_ATOMICS)
6
7 #include <linux/stringify.h>
8 #include <asm/alternative.h>
9
10 #ifdef __ASSEMBLER__
11
12 .arch_extension lse
13
14 .macro alt_lse, llsc, lse
15         alternative_insn "\llsc", "\lse", ARM64_HAS_LSE_ATOMICS
16 .endm
17
18 #else   /* __ASSEMBLER__ */
19
20 __asm__(".arch_extension        lse");
21
22 /* Move the ll/sc atomics out-of-line */
23 #define __LL_SC_INLINE          notrace
24 #define __LL_SC_PREFIX(x)       __ll_sc_##x
25 #define __LL_SC_EXPORT(x)       EXPORT_SYMBOL(__LL_SC_PREFIX(x))
26
27 /* Macro for constructing calls to out-of-line ll/sc atomics */
28 #define __LL_SC_CALL(op)        "bl\t" __stringify(__LL_SC_PREFIX(op)) "\n"
29 #define __LL_SC_CLOBBERS        "x16", "x17", "x30"
30
31 /* In-line patching at runtime */
32 #define ARM64_LSE_ATOMIC_INSN(llsc, lse)                                \
33         ALTERNATIVE(llsc, lse, ARM64_HAS_LSE_ATOMICS)
34
35 #endif  /* __ASSEMBLER__ */
36 #else   /* CONFIG_AS_LSE && CONFIG_ARM64_LSE_ATOMICS */
37
38 #ifdef __ASSEMBLER__
39
40 .macro alt_lse, llsc, lse
41         \llsc
42 .endm
43
44 #else   /* __ASSEMBLER__ */
45
46 #define __LL_SC_INLINE          static inline
47 #define __LL_SC_PREFIX(x)       x
48 #define __LL_SC_EXPORT(x)
49
50 #define ARM64_LSE_ATOMIC_INSN(llsc, lse)        llsc
51
52 #endif  /* __ASSEMBLER__ */
53 #endif  /* CONFIG_AS_LSE && CONFIG_ARM64_LSE_ATOMICS */
54 #endif  /* __ASM_LSE_H */