Commit | Line | Data |
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1965aae3 PA |
1 | #ifndef _ASM_X86_IO_H |
2 | #define _ASM_X86_IO_H | |
e045fb2a | 3 | |
b310f381 | 4 | #define ARCH_HAS_IOREMAP_WC |
5 | ||
c1f64a58 | 6 | #include <linux/compiler.h> |
2c5643b1 | 7 | #include <asm-generic/int-ll64.h> |
c1f64a58 LT |
8 | |
9 | #define build_mmio_read(name, size, type, reg, barrier) \ | |
10 | static inline type name(const volatile void __iomem *addr) \ | |
1c5b0eb6 | 11 | { type ret; asm volatile("mov" size " %1,%0":reg (ret) \ |
c1f64a58 LT |
12 | :"m" (*(volatile type __force *)addr) barrier); return ret; } |
13 | ||
14 | #define build_mmio_write(name, size, type, reg, barrier) \ | |
15 | static inline void name(type val, volatile void __iomem *addr) \ | |
16 | { asm volatile("mov" size " %0,%1": :reg (val), \ | |
17 | "m" (*(volatile type __force *)addr) barrier); } | |
18 | ||
1c5b0eb6 MP |
19 | build_mmio_read(readb, "b", unsigned char, "=q", :"memory") |
20 | build_mmio_read(readw, "w", unsigned short, "=r", :"memory") | |
21 | build_mmio_read(readl, "l", unsigned int, "=r", :"memory") | |
c1f64a58 | 22 | |
1c5b0eb6 MP |
23 | build_mmio_read(__readb, "b", unsigned char, "=q", ) |
24 | build_mmio_read(__readw, "w", unsigned short, "=r", ) | |
25 | build_mmio_read(__readl, "l", unsigned int, "=r", ) | |
c1f64a58 LT |
26 | |
27 | build_mmio_write(writeb, "b", unsigned char, "q", :"memory") | |
28 | build_mmio_write(writew, "w", unsigned short, "r", :"memory") | |
29 | build_mmio_write(writel, "l", unsigned int, "r", :"memory") | |
30 | ||
31 | build_mmio_write(__writeb, "b", unsigned char, "q", ) | |
32 | build_mmio_write(__writew, "w", unsigned short, "r", ) | |
33 | build_mmio_write(__writel, "l", unsigned int, "r", ) | |
34 | ||
35 | #define readb_relaxed(a) __readb(a) | |
36 | #define readw_relaxed(a) __readw(a) | |
37 | #define readl_relaxed(a) __readl(a) | |
38 | #define __raw_readb __readb | |
39 | #define __raw_readw __readw | |
40 | #define __raw_readl __readl | |
41 | ||
42 | #define __raw_writeb __writeb | |
43 | #define __raw_writew __writew | |
44 | #define __raw_writel __writel | |
45 | ||
46 | #define mmiowb() barrier() | |
47 | ||
48 | #ifdef CONFIG_X86_64 | |
93093d09 | 49 | |
1c5b0eb6 | 50 | build_mmio_read(readq, "q", unsigned long, "=r", :"memory") |
c1f64a58 | 51 | build_mmio_write(writeq, "q", unsigned long, "r", :"memory") |
c1f64a58 | 52 | |
93093d09 | 53 | #else |
2c5643b1 HM |
54 | |
55 | static inline __u64 readq(const volatile void __iomem *addr) | |
56 | { | |
57 | const volatile u32 __iomem *p = addr; | |
a0b1131e | 58 | u32 low, high; |
2c5643b1 | 59 | |
a0b1131e IM |
60 | low = readl(p); |
61 | high = readl(p + 1); | |
2c5643b1 | 62 | |
a0b1131e | 63 | return low + ((u64)high << 32); |
2c5643b1 HM |
64 | } |
65 | ||
66 | static inline void writeq(__u64 val, volatile void __iomem *addr) | |
67 | { | |
68 | writel(val, addr); | |
69 | writel(val >> 32, addr+4); | |
70 | } | |
71 | ||
a0b1131e IM |
72 | #endif |
73 | ||
93093d09 IM |
74 | #define readq_relaxed(a) readq(a) |
75 | ||
76 | #define __raw_readq(a) readq(a) | |
77 | #define __raw_writeq(val, addr) writeq(val, addr) | |
78 | ||
a0b1131e | 79 | /* Let people know that we have them */ |
93093d09 IM |
80 | #define readq readq |
81 | #define writeq writeq | |
2c5643b1 | 82 | |
96a388de TG |
83 | #ifdef CONFIG_X86_32 |
84 | # include "io_32.h" | |
85 | #else | |
86 | # include "io_64.h" | |
87 | #endif | |
e045fb2a | 88 | |
89 | extern void *xlate_dev_mem_ptr(unsigned long phys); | |
90 | extern void unxlate_dev_mem_ptr(unsigned long phys, void *addr); | |
91 | ||
3a96ce8c | 92 | extern int ioremap_change_attr(unsigned long vaddr, unsigned long size, |
93 | unsigned long prot_val); | |
1774a5be | 94 | extern void __iomem *ioremap_wc(unsigned long offset, unsigned long size); |
3a96ce8c | 95 | |
4583ed51 JF |
96 | /* |
97 | * early_ioremap() and early_iounmap() are for temporary early boot-time | |
98 | * mappings, before the real ioremap() is functional. | |
99 | * A boot-time mapping is currently limited to at most 16 pages. | |
100 | */ | |
101 | extern void early_ioremap_init(void); | |
102 | extern void early_ioremap_clear(void); | |
103 | extern void early_ioremap_reset(void); | |
1d6cf1fe HH |
104 | extern void __iomem *early_ioremap(unsigned long offset, unsigned long size); |
105 | extern void __iomem *early_memremap(unsigned long offset, unsigned long size); | |
106 | extern void early_iounmap(void __iomem *addr, unsigned long size); | |
4583ed51 JF |
107 | extern void __iomem *fix_ioremap(unsigned idx, unsigned long phys); |
108 | ||
109 | ||
1965aae3 | 110 | #endif /* _ASM_X86_IO_H */ |