123 lines
2.4 KiB
C
123 lines
2.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _LINUX_IO_64_NONATOMIC_LO_HI_H_
|
|
#define _LINUX_IO_64_NONATOMIC_LO_HI_H_
|
|
|
|
#include <linux/io.h>
|
|
#include <asm-generic/int-ll64.h>
|
|
|
|
static inline __u64 lo_hi_readq(const volatile void __iomem *addr)
|
|
{
|
|
const volatile u32 __iomem *p = addr;
|
|
u32 low, high;
|
|
|
|
low = readl(p);
|
|
high = readl(p + 1);
|
|
|
|
return low + ((u64)high << 32);
|
|
}
|
|
|
|
static inline void lo_hi_writeq(__u64 val, volatile void __iomem *addr)
|
|
{
|
|
writel(val, addr);
|
|
writel(val >> 32, addr + 4);
|
|
}
|
|
|
|
static inline __u64 lo_hi_readq_relaxed(const volatile void __iomem *addr)
|
|
{
|
|
const volatile u32 __iomem *p = addr;
|
|
u32 low, high;
|
|
|
|
low = readl_relaxed(p);
|
|
high = readl_relaxed(p + 1);
|
|
|
|
return low + ((u64)high << 32);
|
|
}
|
|
|
|
static inline void lo_hi_writeq_relaxed(__u64 val, volatile void __iomem *addr)
|
|
{
|
|
writel_relaxed(val, addr);
|
|
writel_relaxed(val >> 32, addr + 4);
|
|
}
|
|
|
|
#ifndef readq
|
|
#define readq lo_hi_readq
|
|
#endif
|
|
|
|
#ifndef writeq
|
|
#define writeq lo_hi_writeq
|
|
#endif
|
|
|
|
#ifndef readq_relaxed
|
|
#define readq_relaxed lo_hi_readq_relaxed
|
|
#endif
|
|
|
|
#ifndef writeq_relaxed
|
|
#define writeq_relaxed lo_hi_writeq_relaxed
|
|
#endif
|
|
|
|
#ifndef ioread64_lo_hi
|
|
#define ioread64_lo_hi ioread64_lo_hi
|
|
static inline u64 ioread64_lo_hi(void __iomem *addr)
|
|
{
|
|
u32 low, high;
|
|
|
|
low = ioread32(addr);
|
|
high = ioread32(addr + sizeof(u32));
|
|
|
|
return low + ((u64)high << 32);
|
|
}
|
|
#endif
|
|
|
|
#ifndef iowrite64_lo_hi
|
|
#define iowrite64_lo_hi iowrite64_lo_hi
|
|
static inline void iowrite64_lo_hi(u64 val, void __iomem *addr)
|
|
{
|
|
iowrite32(val, addr);
|
|
iowrite32(val >> 32, addr + sizeof(u32));
|
|
}
|
|
#endif
|
|
|
|
#ifndef ioread64be_lo_hi
|
|
#define ioread64be_lo_hi ioread64be_lo_hi
|
|
static inline u64 ioread64be_lo_hi(void __iomem *addr)
|
|
{
|
|
u32 low, high;
|
|
|
|
low = ioread32be(addr + sizeof(u32));
|
|
high = ioread32be(addr);
|
|
|
|
return low + ((u64)high << 32);
|
|
}
|
|
#endif
|
|
|
|
#ifndef iowrite64be_lo_hi
|
|
#define iowrite64be_lo_hi iowrite64be_lo_hi
|
|
static inline void iowrite64be_lo_hi(u64 val, void __iomem *addr)
|
|
{
|
|
iowrite32be(val, addr + sizeof(u32));
|
|
iowrite32be(val >> 32, addr);
|
|
}
|
|
#endif
|
|
|
|
#ifndef ioread64
|
|
#define ioread64_is_nonatomic
|
|
#define ioread64 ioread64_lo_hi
|
|
#endif
|
|
|
|
#ifndef iowrite64
|
|
#define iowrite64_is_nonatomic
|
|
#define iowrite64 iowrite64_lo_hi
|
|
#endif
|
|
|
|
#ifndef ioread64be
|
|
#define ioread64be_is_nonatomic
|
|
#define ioread64be ioread64be_lo_hi
|
|
#endif
|
|
|
|
#ifndef iowrite64be
|
|
#define iowrite64be_is_nonatomic
|
|
#define iowrite64be iowrite64be_lo_hi
|
|
#endif
|
|
|
|
#endif /* _LINUX_IO_64_NONATOMIC_LO_HI_H_ */
|