4 #define ARCH_HAS_IOREMAP_WC
6 #include <linux/compiler.h>
8 #define build_mmio_read(name, size, type, reg, barrier) \
9 static inline type name(const volatile void __iomem *addr) \
10 { type ret; asm volatile("mov" size " %1,%0":reg (ret) \
11 :"m" (*(volatile type __force *)addr) barrier); return ret; }
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); }
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")
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", )
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")
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", )
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
41 #define __raw_writeb __writeb
42 #define __raw_writew __writew
43 #define __raw_writel __writel
45 #define mmiowb() barrier()
48 build_mmio_read(readq
, "q", unsigned long, "=r", :"memory")
49 build_mmio_read(__readq
, "q", unsigned long, "=r", )
50 build_mmio_write(writeq
, "q", unsigned long, "r", :"memory")
51 build_mmio_write(__writeq
, "q", unsigned long, "r", )
53 #define readq_relaxed(a) __readq(a)
54 #define __raw_readq __readq
55 #define __raw_writeq writeq
57 /* Let people know we have them */
62 extern int iommu_bio_merge
;
70 extern void *xlate_dev_mem_ptr(unsigned long phys
);
71 extern void unxlate_dev_mem_ptr(unsigned long phys
, void *addr
);
73 extern int ioremap_change_attr(unsigned long vaddr
, unsigned long size
,
74 unsigned long prot_val
);
75 extern void __iomem
*ioremap_wc(unsigned long offset
, unsigned long size
);
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.
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
);
86 extern void *early_memremap(unsigned long offset
, unsigned long size
);
87 extern void early_iounmap(void *addr
, unsigned long size
);
88 extern void __iomem
*fix_ioremap(unsigned idx
, unsigned long phys
);
91 #endif /* _ASM_X86_IO_H */
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