86 lines
2.5 KiB
C
86 lines
2.5 KiB
C
// SPDX-License-Identifier: GPL-2.0
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// Copyright (C) 2005-2017 Andes Technology Corporation
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#ifndef __ASM_NDS32_IO_H
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#define __ASM_NDS32_IO_H
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#include <linux/types.h>
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extern void iounmap(volatile void __iomem *addr);
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#define __raw_writeb __raw_writeb
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static inline void __raw_writeb(u8 val, volatile void __iomem *addr)
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{
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asm volatile("sbi %0, [%1]" : : "r" (val), "r" (addr));
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}
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#define __raw_writew __raw_writew
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static inline void __raw_writew(u16 val, volatile void __iomem *addr)
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{
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asm volatile("shi %0, [%1]" : : "r" (val), "r" (addr));
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}
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#define __raw_writel __raw_writel
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static inline void __raw_writel(u32 val, volatile void __iomem *addr)
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{
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asm volatile("swi %0, [%1]" : : "r" (val), "r" (addr));
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}
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#define __raw_readb __raw_readb
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static inline u8 __raw_readb(const volatile void __iomem *addr)
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{
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u8 val;
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asm volatile("lbi %0, [%1]" : "=r" (val) : "r" (addr));
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return val;
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}
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#define __raw_readw __raw_readw
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static inline u16 __raw_readw(const volatile void __iomem *addr)
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{
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u16 val;
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asm volatile("lhi %0, [%1]" : "=r" (val) : "r" (addr));
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return val;
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}
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#define __raw_readl __raw_readl
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static inline u32 __raw_readl(const volatile void __iomem *addr)
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{
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u32 val;
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asm volatile("lwi %0, [%1]" : "=r" (val) : "r" (addr));
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return val;
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}
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#define __iormb() rmb()
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#define __iowmb() wmb()
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#define mmiowb() __asm__ __volatile__ ("msync all" : : : "memory");
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/*
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* {read,write}{b,w,l,q}_relaxed() are like the regular version, but
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* are not guaranteed to provide ordering against spinlocks or memory
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* accesses.
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*/
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#define readb_relaxed(c) ({ u8 __v = __raw_readb(c); __v; })
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#define readw_relaxed(c) ({ u16 __v = le16_to_cpu((__force __le16)__raw_readw(c)); __v; })
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#define readl_relaxed(c) ({ u32 __v = le32_to_cpu((__force __le32)__raw_readl(c)); __v; })
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#define writeb_relaxed(v,c) ((void)__raw_writeb((v),(c)))
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#define writew_relaxed(v,c) ((void)__raw_writew((__force u16)cpu_to_le16(v),(c)))
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#define writel_relaxed(v,c) ((void)__raw_writel((__force u32)cpu_to_le32(v),(c)))
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/*
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* {read,write}{b,w,l,q}() access little endian memory and return result in
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* native endianness.
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*/
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#define readb(c) ({ u8 __v = readb_relaxed(c); __iormb(); __v; })
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#define readw(c) ({ u16 __v = readw_relaxed(c); __iormb(); __v; })
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#define readl(c) ({ u32 __v = readl_relaxed(c); __iormb(); __v; })
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#define writeb(v,c) ({ __iowmb(); writeb_relaxed((v),(c)); })
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#define writew(v,c) ({ __iowmb(); writew_relaxed((v),(c)); })
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#define writel(v,c) ({ __iowmb(); writel_relaxed((v),(c)); })
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#include <asm-generic/io.h>
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#endif /* __ASM_NDS32_IO_H */
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