1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #ifndef _LINUX_IO_64_NONATOMIC_HI_LO_H_ |
3 | #define _LINUX_IO_64_NONATOMIC_HI_LO_H_ |
4 | |
5 | #include <linux/io.h> |
6 | #include <asm-generic/int-ll64.h> |
7 | |
8 | static inline __u64 hi_lo_readq(const volatile void __iomem *addr) |
9 | { |
10 | const volatile u32 __iomem *p = addr; |
11 | u32 low, high; |
12 | |
13 | high = readl(addr: p + 1); |
14 | low = readl(addr: p); |
15 | |
16 | return low + ((u64)high << 32); |
17 | } |
18 | |
19 | static inline void hi_lo_writeq(__u64 val, volatile void __iomem *addr) |
20 | { |
21 | writel(val: val >> 32, addr: addr + 4); |
22 | writel(val, addr); |
23 | } |
24 | |
25 | static inline __u64 hi_lo_readq_relaxed(const volatile void __iomem *addr) |
26 | { |
27 | const volatile u32 __iomem *p = addr; |
28 | u32 low, high; |
29 | |
30 | high = readl_relaxed(p + 1); |
31 | low = readl_relaxed(p); |
32 | |
33 | return low + ((u64)high << 32); |
34 | } |
35 | |
36 | static inline void hi_lo_writeq_relaxed(__u64 val, volatile void __iomem *addr) |
37 | { |
38 | writel_relaxed(val >> 32, addr + 4); |
39 | writel_relaxed(val, addr); |
40 | } |
41 | |
42 | #ifndef readq |
43 | #define readq hi_lo_readq |
44 | #endif |
45 | |
46 | #ifndef writeq |
47 | #define writeq hi_lo_writeq |
48 | #endif |
49 | |
50 | #ifndef readq_relaxed |
51 | #define readq_relaxed hi_lo_readq_relaxed |
52 | #endif |
53 | |
54 | #ifndef writeq_relaxed |
55 | #define writeq_relaxed hi_lo_writeq_relaxed |
56 | #endif |
57 | |
58 | #ifndef ioread64_hi_lo |
59 | #define ioread64_hi_lo ioread64_hi_lo |
60 | static inline u64 ioread64_hi_lo(const void __iomem *addr) |
61 | { |
62 | u32 low, high; |
63 | |
64 | high = ioread32(addr + sizeof(u32)); |
65 | low = ioread32(addr); |
66 | |
67 | return low + ((u64)high << 32); |
68 | } |
69 | #endif |
70 | |
71 | #ifndef iowrite64_hi_lo |
72 | #define iowrite64_hi_lo iowrite64_hi_lo |
73 | static inline void iowrite64_hi_lo(u64 val, void __iomem *addr) |
74 | { |
75 | iowrite32(val >> 32, addr + sizeof(u32)); |
76 | iowrite32(val, addr); |
77 | } |
78 | #endif |
79 | |
80 | #ifndef ioread64be_hi_lo |
81 | #define ioread64be_hi_lo ioread64be_hi_lo |
82 | static inline u64 ioread64be_hi_lo(const void __iomem *addr) |
83 | { |
84 | u32 low, high; |
85 | |
86 | high = ioread32be(addr); |
87 | low = ioread32be(addr + sizeof(u32)); |
88 | |
89 | return low + ((u64)high << 32); |
90 | } |
91 | #endif |
92 | |
93 | #ifndef iowrite64be_hi_lo |
94 | #define iowrite64be_hi_lo iowrite64be_hi_lo |
95 | static inline void iowrite64be_hi_lo(u64 val, void __iomem *addr) |
96 | { |
97 | iowrite32be(val >> 32, addr); |
98 | iowrite32be(val, addr + sizeof(u32)); |
99 | } |
100 | #endif |
101 | |
102 | #ifndef ioread64 |
103 | #define ioread64_is_nonatomic |
104 | #define ioread64 ioread64_hi_lo |
105 | #endif |
106 | |
107 | #ifndef iowrite64 |
108 | #define iowrite64_is_nonatomic |
109 | #define iowrite64 iowrite64_hi_lo |
110 | #endif |
111 | |
112 | #ifndef ioread64be |
113 | #define ioread64be_is_nonatomic |
114 | #define ioread64be ioread64be_hi_lo |
115 | #endif |
116 | |
117 | #ifndef iowrite64be |
118 | #define iowrite64be_is_nonatomic |
119 | #define iowrite64be iowrite64be_hi_lo |
120 | #endif |
121 | |
122 | #endif /* _LINUX_IO_64_NONATOMIC_HI_LO_H_ */ |
123 | |