1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun #ifndef _LINUX_IO_64_NONATOMIC_LO_HI_H_
3*4882a593Smuzhiyun #define _LINUX_IO_64_NONATOMIC_LO_HI_H_
4*4882a593Smuzhiyun
5*4882a593Smuzhiyun #include <linux/io.h>
6*4882a593Smuzhiyun #include <asm-generic/int-ll64.h>
7*4882a593Smuzhiyun
lo_hi_readq(const volatile void __iomem * addr)8*4882a593Smuzhiyun static inline __u64 lo_hi_readq(const volatile void __iomem *addr)
9*4882a593Smuzhiyun {
10*4882a593Smuzhiyun const volatile u32 __iomem *p = addr;
11*4882a593Smuzhiyun u32 low, high;
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun low = readl(p);
14*4882a593Smuzhiyun high = readl(p + 1);
15*4882a593Smuzhiyun
16*4882a593Smuzhiyun return low + ((u64)high << 32);
17*4882a593Smuzhiyun }
18*4882a593Smuzhiyun
lo_hi_writeq(__u64 val,volatile void __iomem * addr)19*4882a593Smuzhiyun static inline void lo_hi_writeq(__u64 val, volatile void __iomem *addr)
20*4882a593Smuzhiyun {
21*4882a593Smuzhiyun writel(val, addr);
22*4882a593Smuzhiyun writel(val >> 32, addr + 4);
23*4882a593Smuzhiyun }
24*4882a593Smuzhiyun
lo_hi_readq_relaxed(const volatile void __iomem * addr)25*4882a593Smuzhiyun static inline __u64 lo_hi_readq_relaxed(const volatile void __iomem *addr)
26*4882a593Smuzhiyun {
27*4882a593Smuzhiyun const volatile u32 __iomem *p = addr;
28*4882a593Smuzhiyun u32 low, high;
29*4882a593Smuzhiyun
30*4882a593Smuzhiyun low = readl_relaxed(p);
31*4882a593Smuzhiyun high = readl_relaxed(p + 1);
32*4882a593Smuzhiyun
33*4882a593Smuzhiyun return low + ((u64)high << 32);
34*4882a593Smuzhiyun }
35*4882a593Smuzhiyun
lo_hi_writeq_relaxed(__u64 val,volatile void __iomem * addr)36*4882a593Smuzhiyun static inline void lo_hi_writeq_relaxed(__u64 val, volatile void __iomem *addr)
37*4882a593Smuzhiyun {
38*4882a593Smuzhiyun writel_relaxed(val, addr);
39*4882a593Smuzhiyun writel_relaxed(val >> 32, addr + 4);
40*4882a593Smuzhiyun }
41*4882a593Smuzhiyun
42*4882a593Smuzhiyun #ifndef readq
43*4882a593Smuzhiyun #define readq lo_hi_readq
44*4882a593Smuzhiyun #endif
45*4882a593Smuzhiyun
46*4882a593Smuzhiyun #ifndef writeq
47*4882a593Smuzhiyun #define writeq lo_hi_writeq
48*4882a593Smuzhiyun #endif
49*4882a593Smuzhiyun
50*4882a593Smuzhiyun #ifndef readq_relaxed
51*4882a593Smuzhiyun #define readq_relaxed lo_hi_readq_relaxed
52*4882a593Smuzhiyun #endif
53*4882a593Smuzhiyun
54*4882a593Smuzhiyun #ifndef writeq_relaxed
55*4882a593Smuzhiyun #define writeq_relaxed lo_hi_writeq_relaxed
56*4882a593Smuzhiyun #endif
57*4882a593Smuzhiyun
58*4882a593Smuzhiyun #ifndef ioread64_lo_hi
59*4882a593Smuzhiyun #define ioread64_lo_hi ioread64_lo_hi
ioread64_lo_hi(const void __iomem * addr)60*4882a593Smuzhiyun static inline u64 ioread64_lo_hi(const void __iomem *addr)
61*4882a593Smuzhiyun {
62*4882a593Smuzhiyun u32 low, high;
63*4882a593Smuzhiyun
64*4882a593Smuzhiyun low = ioread32(addr);
65*4882a593Smuzhiyun high = ioread32(addr + sizeof(u32));
66*4882a593Smuzhiyun
67*4882a593Smuzhiyun return low + ((u64)high << 32);
68*4882a593Smuzhiyun }
69*4882a593Smuzhiyun #endif
70*4882a593Smuzhiyun
71*4882a593Smuzhiyun #ifndef iowrite64_lo_hi
72*4882a593Smuzhiyun #define iowrite64_lo_hi iowrite64_lo_hi
iowrite64_lo_hi(u64 val,void __iomem * addr)73*4882a593Smuzhiyun static inline void iowrite64_lo_hi(u64 val, void __iomem *addr)
74*4882a593Smuzhiyun {
75*4882a593Smuzhiyun iowrite32(val, addr);
76*4882a593Smuzhiyun iowrite32(val >> 32, addr + sizeof(u32));
77*4882a593Smuzhiyun }
78*4882a593Smuzhiyun #endif
79*4882a593Smuzhiyun
80*4882a593Smuzhiyun #ifndef ioread64be_lo_hi
81*4882a593Smuzhiyun #define ioread64be_lo_hi ioread64be_lo_hi
ioread64be_lo_hi(const void __iomem * addr)82*4882a593Smuzhiyun static inline u64 ioread64be_lo_hi(const void __iomem *addr)
83*4882a593Smuzhiyun {
84*4882a593Smuzhiyun u32 low, high;
85*4882a593Smuzhiyun
86*4882a593Smuzhiyun low = ioread32be(addr + sizeof(u32));
87*4882a593Smuzhiyun high = ioread32be(addr);
88*4882a593Smuzhiyun
89*4882a593Smuzhiyun return low + ((u64)high << 32);
90*4882a593Smuzhiyun }
91*4882a593Smuzhiyun #endif
92*4882a593Smuzhiyun
93*4882a593Smuzhiyun #ifndef iowrite64be_lo_hi
94*4882a593Smuzhiyun #define iowrite64be_lo_hi iowrite64be_lo_hi
iowrite64be_lo_hi(u64 val,void __iomem * addr)95*4882a593Smuzhiyun static inline void iowrite64be_lo_hi(u64 val, void __iomem *addr)
96*4882a593Smuzhiyun {
97*4882a593Smuzhiyun iowrite32be(val, addr + sizeof(u32));
98*4882a593Smuzhiyun iowrite32be(val >> 32, addr);
99*4882a593Smuzhiyun }
100*4882a593Smuzhiyun #endif
101*4882a593Smuzhiyun
102*4882a593Smuzhiyun #ifndef ioread64
103*4882a593Smuzhiyun #define ioread64_is_nonatomic
104*4882a593Smuzhiyun #define ioread64 ioread64_lo_hi
105*4882a593Smuzhiyun #endif
106*4882a593Smuzhiyun
107*4882a593Smuzhiyun #ifndef iowrite64
108*4882a593Smuzhiyun #define iowrite64_is_nonatomic
109*4882a593Smuzhiyun #define iowrite64 iowrite64_lo_hi
110*4882a593Smuzhiyun #endif
111*4882a593Smuzhiyun
112*4882a593Smuzhiyun #ifndef ioread64be
113*4882a593Smuzhiyun #define ioread64be_is_nonatomic
114*4882a593Smuzhiyun #define ioread64be ioread64be_lo_hi
115*4882a593Smuzhiyun #endif
116*4882a593Smuzhiyun
117*4882a593Smuzhiyun #ifndef iowrite64be
118*4882a593Smuzhiyun #define iowrite64be_is_nonatomic
119*4882a593Smuzhiyun #define iowrite64be iowrite64be_lo_hi
120*4882a593Smuzhiyun #endif
121*4882a593Smuzhiyun
122*4882a593Smuzhiyun #endif /* _LINUX_IO_64_NONATOMIC_LO_HI_H_ */
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