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| author | Huacai Chen <chenhuacai@loongson.cn> | 2022-05-31 18:04:11 +0800 |
|---|---|---|
| committer | Huacai Chen <chenhuacai@loongson.cn> | 2022-06-03 20:09:28 +0800 |
| commit | 559671e04a33b183b6e65fd585ab2e2a0578208b (patch) | |
| tree | 1fe8b2bf52ca14bad194049ff85d662f3b3b2e81 /arch/loongarch/include | |
| parent | 7153c3cbb5b9b99755659b97861fd4fc909ed86f (diff) | |
| download | linux-559671e04a33b183b6e65fd585ab2e2a0578208b.tar.gz | |
LoongArch: Add some library functions
Add some library functions for LoongArch, including: delay, memset,
memcpy, memmove, copy_user, strncpy_user, strnlen_user and tlb dump
functions.
Reviewed-by: WANG Xuerui <git@xen0n.name>
Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Diffstat (limited to 'arch/loongarch/include')
| -rw-r--r-- | arch/loongarch/include/asm/delay.h | 26 | ||||
| -rw-r--r-- | arch/loongarch/include/asm/string.h | 12 |
2 files changed, 38 insertions, 0 deletions
diff --git a/arch/loongarch/include/asm/delay.h b/arch/loongarch/include/asm/delay.h new file mode 100644 index 000000000000..36d775191310 --- /dev/null +++ b/arch/loongarch/include/asm/delay.h @@ -0,0 +1,26 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2020-2022 Loongson Technology Corporation Limited + */ +#ifndef _ASM_DELAY_H +#define _ASM_DELAY_H + +#include <linux/param.h> + +extern void __delay(unsigned long cycles); +extern void __ndelay(unsigned long ns); +extern void __udelay(unsigned long us); + +#define ndelay(ns) __ndelay(ns) +#define udelay(us) __udelay(us) + +/* make sure "usecs *= ..." in udelay do not overflow. */ +#if HZ >= 1000 +#define MAX_UDELAY_MS 1 +#elif HZ <= 200 +#define MAX_UDELAY_MS 5 +#else +#define MAX_UDELAY_MS (1000 / HZ) +#endif + +#endif /* _ASM_DELAY_H */ diff --git a/arch/loongarch/include/asm/string.h b/arch/loongarch/include/asm/string.h new file mode 100644 index 000000000000..b07e60ded957 --- /dev/null +++ b/arch/loongarch/include/asm/string.h @@ -0,0 +1,12 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2020-2022 Loongson Technology Corporation Limited + */ +#ifndef _ASM_STRING_H +#define _ASM_STRING_H + +extern void *memset(void *__s, int __c, size_t __count); +extern void *memcpy(void *__to, __const__ void *__from, size_t __n); +extern void *memmove(void *__dest, __const__ void *__src, size_t __n); + +#endif /* _ASM_STRING_H */ |