| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef _LINUX_IO_64_NONATOMIC_HI_LO_H_ |
| #define _LINUX_IO_64_NONATOMIC_HI_LO_H_ |
| |
| #include <linux/io.h> |
| #include <asm-generic/int-ll64.h> |
| |
| static inline __u64 hi_lo_readq(const volatile void __iomem *addr) |
| { |
| const volatile u32 __iomem *p = addr; |
| u32 low, high; |
| |
| high = readl(p + 1); |
| low = readl(p); |
| |
| return low + ((u64)high << 32); |
| } |
| |
| static inline void hi_lo_writeq(__u64 val, volatile void __iomem *addr) |
| { |
| writel(val >> 32, addr + 4); |
| writel(val, addr); |
| } |
| |
| static inline __u64 hi_lo_readq_relaxed(const volatile void __iomem *addr) |
| { |
| const volatile u32 __iomem *p = addr; |
| u32 low, high; |
| |
| high = readl_relaxed(p + 1); |
| low = readl_relaxed(p); |
| |
| return low + ((u64)high << 32); |
| } |
| |
| static inline void hi_lo_writeq_relaxed(__u64 val, volatile void __iomem *addr) |
| { |
| writel_relaxed(val >> 32, addr + 4); |
| writel_relaxed(val, addr); |
| } |
| |
| #ifndef readq |
| #define readq hi_lo_readq |
| #endif |
| |
| #ifndef writeq |
| #define writeq hi_lo_writeq |
| #endif |
| |
| #ifndef readq_relaxed |
| #define readq_relaxed hi_lo_readq_relaxed |
| #endif |
| |
| #ifndef writeq_relaxed |
| #define writeq_relaxed hi_lo_writeq_relaxed |
| #endif |
| |
| #ifndef ioread64_hi_lo |
| #define ioread64_hi_lo ioread64_hi_lo |
| static inline u64 ioread64_hi_lo(const void __iomem *addr) |
| { |
| u32 low, high; |
| |
| high = ioread32(addr + sizeof(u32)); |
| low = ioread32(addr); |
| |
| return low + ((u64)high << 32); |
| } |
| #endif |
| |
| #ifndef iowrite64_hi_lo |
| #define iowrite64_hi_lo iowrite64_hi_lo |
| static inline void iowrite64_hi_lo(u64 val, void __iomem *addr) |
| { |
| iowrite32(val >> 32, addr + sizeof(u32)); |
| iowrite32(val, addr); |
| } |
| #endif |
| |
| #ifndef ioread64be_hi_lo |
| #define ioread64be_hi_lo ioread64be_hi_lo |
| static inline u64 ioread64be_hi_lo(const void __iomem *addr) |
| { |
| u32 low, high; |
| |
| high = ioread32be(addr); |
| low = ioread32be(addr + sizeof(u32)); |
| |
| return low + ((u64)high << 32); |
| } |
| #endif |
| |
| #ifndef iowrite64be_hi_lo |
| #define iowrite64be_hi_lo iowrite64be_hi_lo |
| static inline void iowrite64be_hi_lo(u64 val, void __iomem *addr) |
| { |
| iowrite32be(val >> 32, addr); |
| iowrite32be(val, addr + sizeof(u32)); |
| } |
| #endif |
| |
| #ifndef ioread64 |
| #define ioread64_is_nonatomic |
| #define ioread64 ioread64_hi_lo |
| #endif |
| |
| #ifndef iowrite64 |
| #define iowrite64_is_nonatomic |
| #define iowrite64 iowrite64_hi_lo |
| #endif |
| |
| #ifndef ioread64be |
| #define ioread64be_is_nonatomic |
| #define ioread64be ioread64be_hi_lo |
| #endif |
| |
| #ifndef iowrite64be |
| #define iowrite64be_is_nonatomic |
| #define iowrite64be iowrite64be_hi_lo |
| #endif |
| |
| #endif /* _LINUX_IO_64_NONATOMIC_HI_LO_H_ */ |