4 #define ARCH_HAS_IOREMAP_WC
6 #include <linux/compiler.h>
7 #include <asm-generic/int-ll64.h>
9 #define build_mmio_read(name, size, type, reg, barrier) \
10 static inline type name(const volatile void __iomem *addr) \
11 { type ret; asm volatile("mov" size " %1,%0":reg (ret) \
12 :"m" (*(volatile type __force *)addr) barrier); return ret; }
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); }
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")
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", )
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")
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", )
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
42 #define __raw_writeb __writeb
43 #define __raw_writew __writew
44 #define __raw_writel __writel
46 #define mmiowb() barrier()
50 build_mmio_read(readq
, "q", unsigned long, "=r", :"memory")
51 build_mmio_write(writeq
, "q", unsigned long, "r", :"memory")
55 static inline __u64
readq(const volatile void __iomem
*addr
)
57 const volatile u32 __iomem
*p
= addr
;
63 return low
+ ((u64
)high
<< 32);
66 static inline void writeq(__u64 val
, volatile void __iomem
*addr
)
69 writel(val
>> 32, addr
+4);
74 #define readq_relaxed(a) readq(a)
76 #define __raw_readq(a) readq(a)
77 #define __raw_writeq(val, addr) writeq(val, addr)
79 /* Let people know that we have them */
89 extern void *xlate_dev_mem_ptr(unsigned long phys
);
90 extern void unxlate_dev_mem_ptr(unsigned long phys
, void *addr
);
92 extern int ioremap_change_attr(unsigned long vaddr
, unsigned long size
,
93 unsigned long prot_val
);
94 extern void __iomem
*ioremap_wc(unsigned long offset
, unsigned long size
);
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.
101 extern void early_ioremap_init(void);
102 extern void early_ioremap_clear(void);
103 extern void early_ioremap_reset(void);
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
);
107 extern void __iomem
*fix_ioremap(unsigned idx
, unsigned long phys
);
110 #endif /* _ASM_X86_IO_H */
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