[PATCH v7 28/37] nds32: Miscellaneous header files
This patch introduces some miscellaneous header files. Signed-off-by: Vincent ChenSigned-off-by: Greentime Hu Acked-by: Arnd Bergmann --- arch/nds32/include/asm/delay.h | 39 + arch/nds32/include/asm/linkage.h| 11 ++ arch/nds32/include/uapi/asm/byteorder.h | 13 +++ 3 files changed, 63 insertions(+) create mode 100644 arch/nds32/include/asm/delay.h create mode 100644 arch/nds32/include/asm/linkage.h create mode 100644 arch/nds32/include/uapi/asm/byteorder.h diff --git a/arch/nds32/include/asm/delay.h b/arch/nds32/include/asm/delay.h new file mode 100644 index ..519ba97acb6e --- /dev/null +++ b/arch/nds32/include/asm/delay.h @@ -0,0 +1,39 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (C) 2005-2017 Andes Technology Corporation + +#ifndef __NDS32_DELAY_H__ +#define __NDS32_DELAY_H__ + +#include + +/* There is no clocksource cycle counter in the CPU. */ +static inline void __delay(unsigned long loops) +{ + __asm__ __volatile__(".align 2\n" +"1:\n" +"\taddi\t%0, %0, -1\n" +"\tbgtz\t%0, 1b\n" +:"=r"(loops) +:"0"(loops)); +} + +static inline void __udelay(unsigned long usecs, unsigned long lpj) +{ + usecs *= (unsigned long)(((0x8000ULL / (50 / HZ)) + + 0x8000ULL) >> 32); + usecs = (unsigned long)(((unsigned long long)usecs * lpj) >> 32); + __delay(usecs); +} + +#define udelay(usecs) __udelay((usecs), loops_per_jiffy) + +/* 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 diff --git a/arch/nds32/include/asm/linkage.h b/arch/nds32/include/asm/linkage.h new file mode 100644 index ..e708c8bdb926 --- /dev/null +++ b/arch/nds32/include/asm/linkage.h @@ -0,0 +1,11 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (C) 2005-2017 Andes Technology Corporation + +#ifndef __ASM_LINKAGE_H +#define __ASM_LINKAGE_H + +/* This file is required by include/linux/linkage.h */ +#define __ALIGN .align 2 +#define __ALIGN_STR ".align 2" + +#endif diff --git a/arch/nds32/include/uapi/asm/byteorder.h b/arch/nds32/include/uapi/asm/byteorder.h new file mode 100644 index ..a23f6f3a2468 --- /dev/null +++ b/arch/nds32/include/uapi/asm/byteorder.h @@ -0,0 +1,13 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (C) 2005-2017 Andes Technology Corporation + +#ifndef __NDS32_BYTEORDER_H__ +#define __NDS32_BYTEORDER_H__ + +#ifdef __NDS32_EB__ +#include +#else +#include +#endif + +#endif /* __NDS32_BYTEORDER_H__ */ -- 2.16.1
[PATCH v7 28/37] nds32: Miscellaneous header files
This patch introduces some miscellaneous header files. Signed-off-by: Vincent Chen Signed-off-by: Greentime Hu Acked-by: Arnd Bergmann --- arch/nds32/include/asm/delay.h | 39 + arch/nds32/include/asm/linkage.h| 11 ++ arch/nds32/include/uapi/asm/byteorder.h | 13 +++ 3 files changed, 63 insertions(+) create mode 100644 arch/nds32/include/asm/delay.h create mode 100644 arch/nds32/include/asm/linkage.h create mode 100644 arch/nds32/include/uapi/asm/byteorder.h diff --git a/arch/nds32/include/asm/delay.h b/arch/nds32/include/asm/delay.h new file mode 100644 index ..519ba97acb6e --- /dev/null +++ b/arch/nds32/include/asm/delay.h @@ -0,0 +1,39 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (C) 2005-2017 Andes Technology Corporation + +#ifndef __NDS32_DELAY_H__ +#define __NDS32_DELAY_H__ + +#include + +/* There is no clocksource cycle counter in the CPU. */ +static inline void __delay(unsigned long loops) +{ + __asm__ __volatile__(".align 2\n" +"1:\n" +"\taddi\t%0, %0, -1\n" +"\tbgtz\t%0, 1b\n" +:"=r"(loops) +:"0"(loops)); +} + +static inline void __udelay(unsigned long usecs, unsigned long lpj) +{ + usecs *= (unsigned long)(((0x8000ULL / (50 / HZ)) + + 0x8000ULL) >> 32); + usecs = (unsigned long)(((unsigned long long)usecs * lpj) >> 32); + __delay(usecs); +} + +#define udelay(usecs) __udelay((usecs), loops_per_jiffy) + +/* 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 diff --git a/arch/nds32/include/asm/linkage.h b/arch/nds32/include/asm/linkage.h new file mode 100644 index ..e708c8bdb926 --- /dev/null +++ b/arch/nds32/include/asm/linkage.h @@ -0,0 +1,11 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (C) 2005-2017 Andes Technology Corporation + +#ifndef __ASM_LINKAGE_H +#define __ASM_LINKAGE_H + +/* This file is required by include/linux/linkage.h */ +#define __ALIGN .align 2 +#define __ALIGN_STR ".align 2" + +#endif diff --git a/arch/nds32/include/uapi/asm/byteorder.h b/arch/nds32/include/uapi/asm/byteorder.h new file mode 100644 index ..a23f6f3a2468 --- /dev/null +++ b/arch/nds32/include/uapi/asm/byteorder.h @@ -0,0 +1,13 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (C) 2005-2017 Andes Technology Corporation + +#ifndef __NDS32_BYTEORDER_H__ +#define __NDS32_BYTEORDER_H__ + +#ifdef __NDS32_EB__ +#include +#else +#include +#endif + +#endif /* __NDS32_BYTEORDER_H__ */ -- 2.16.1