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77ef50a5 VN |
1 | #ifndef ASM_X86__IO_H |
2 | #define ASM_X86__IO_H | |
e045fb2a | 3 | |
b310f381 | 4 | #define ARCH_HAS_IOREMAP_WC |
5 | ||
c1f64a58 LT |
6 | #include <linux/compiler.h> |
7 | ||
8 | #define build_mmio_read(name, size, type, reg, barrier) \ | |
9 | static inline type name(const volatile void __iomem *addr) \ | |
1c5b0eb6 | 10 | { type ret; asm volatile("mov" size " %1,%0":reg (ret) \ |
c1f64a58 LT |
11 | :"m" (*(volatile type __force *)addr) barrier); return ret; } |
12 | ||
13 | #define build_mmio_write(name, size, type, reg, barrier) \ | |
14 | static inline void name(type val, volatile void __iomem *addr) \ | |
15 | { asm volatile("mov" size " %0,%1": :reg (val), \ | |
16 | "m" (*(volatile type __force *)addr) barrier); } | |
17 | ||
1c5b0eb6 MP |
18 | build_mmio_read(readb, "b", unsigned char, "=q", :"memory") |
19 | build_mmio_read(readw, "w", unsigned short, "=r", :"memory") | |
20 | build_mmio_read(readl, "l", unsigned int, "=r", :"memory") | |
c1f64a58 | 21 | |
1c5b0eb6 MP |
22 | build_mmio_read(__readb, "b", unsigned char, "=q", ) |
23 | build_mmio_read(__readw, "w", unsigned short, "=r", ) | |
24 | build_mmio_read(__readl, "l", unsigned int, "=r", ) | |
c1f64a58 LT |
25 | |
26 | build_mmio_write(writeb, "b", unsigned char, "q", :"memory") | |
27 | build_mmio_write(writew, "w", unsigned short, "r", :"memory") | |
28 | build_mmio_write(writel, "l", unsigned int, "r", :"memory") | |
29 | ||
30 | build_mmio_write(__writeb, "b", unsigned char, "q", ) | |
31 | build_mmio_write(__writew, "w", unsigned short, "r", ) | |
32 | build_mmio_write(__writel, "l", unsigned int, "r", ) | |
33 | ||
34 | #define readb_relaxed(a) __readb(a) | |
35 | #define readw_relaxed(a) __readw(a) | |
36 | #define readl_relaxed(a) __readl(a) | |
37 | #define __raw_readb __readb | |
38 | #define __raw_readw __readw | |
39 | #define __raw_readl __readl | |
40 | ||
41 | #define __raw_writeb __writeb | |
42 | #define __raw_writew __writew | |
43 | #define __raw_writel __writel | |
44 | ||
45 | #define mmiowb() barrier() | |
46 | ||
47 | #ifdef CONFIG_X86_64 | |
1c5b0eb6 MP |
48 | build_mmio_read(readq, "q", unsigned long, "=r", :"memory") |
49 | build_mmio_read(__readq, "q", unsigned long, "=r", ) | |
c1f64a58 LT |
50 | build_mmio_write(writeq, "q", unsigned long, "r", :"memory") |
51 | build_mmio_write(__writeq, "q", unsigned long, "r", ) | |
52 | ||
53 | #define readq_relaxed(a) __readq(a) | |
54 | #define __raw_readq __readq | |
55 | #define __raw_writeq writeq | |
56 | ||
57 | /* Let people know we have them */ | |
58 | #define readq readq | |
59 | #define writeq writeq | |
60 | #endif | |
61 | ||
9321b8cb JS |
62 | extern int iommu_bio_merge; |
63 | ||
96a388de TG |
64 | #ifdef CONFIG_X86_32 |
65 | # include "io_32.h" | |
66 | #else | |
67 | # include "io_64.h" | |
68 | #endif | |
e045fb2a | 69 | |
70 | extern void *xlate_dev_mem_ptr(unsigned long phys); | |
71 | extern void unxlate_dev_mem_ptr(unsigned long phys, void *addr); | |
72 | ||
3a96ce8c | 73 | extern int ioremap_change_attr(unsigned long vaddr, unsigned long size, |
74 | unsigned long prot_val); | |
1774a5be | 75 | extern void __iomem *ioremap_wc(unsigned long offset, unsigned long size); |
3a96ce8c | 76 | |
4583ed51 JF |
77 | /* |
78 | * early_ioremap() and early_iounmap() are for temporary early boot-time | |
79 | * mappings, before the real ioremap() is functional. | |
80 | * A boot-time mapping is currently limited to at most 16 pages. | |
81 | */ | |
82 | extern void early_ioremap_init(void); | |
83 | extern void early_ioremap_clear(void); | |
84 | extern void early_ioremap_reset(void); | |
85 | extern void *early_ioremap(unsigned long offset, unsigned long size); | |
14941779 | 86 | extern void *early_memremap(unsigned long offset, unsigned long size); |
4583ed51 JF |
87 | extern void early_iounmap(void *addr, unsigned long size); |
88 | extern void __iomem *fix_ioremap(unsigned idx, unsigned long phys); | |
89 | ||
90 | ||
77ef50a5 | 91 | #endif /* ASM_X86__IO_H */ |