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