Revision 93918e9afc76717176e9e114e79cdbb602a45ae8 authored by Linus Torvalds on 20 October 2005, 06:23:05 UTC, committed by Linus Torvalds on 20 October 2005, 06:23:05 UTC
The -rc4 release was supposed to be the last -rc, but here goes. The RCU fixes and the swiotlb changes need an -rc for final testing.
1 parent 450da6c
io_trivial.h
/* Trivial implementations of basic i/o routines. Assumes that all
of the hard work has been done by ioremap and ioportmap, and that
access to i/o space is linear. */
/* This file may be included multiple times. */
#if IO_CONCAT(__IO_PREFIX,trivial_io_bw)
__EXTERN_INLINE unsigned int
IO_CONCAT(__IO_PREFIX,ioread8)(void __iomem *a)
{
return __kernel_ldbu(*(volatile u8 __force *)a);
}
__EXTERN_INLINE unsigned int
IO_CONCAT(__IO_PREFIX,ioread16)(void __iomem *a)
{
return __kernel_ldwu(*(volatile u16 __force *)a);
}
__EXTERN_INLINE void
IO_CONCAT(__IO_PREFIX,iowrite8)(u8 b, void __iomem *a)
{
__kernel_stb(b, *(volatile u8 __force *)a);
}
__EXTERN_INLINE void
IO_CONCAT(__IO_PREFIX,iowrite16)(u16 b, void __iomem *a)
{
__kernel_stw(b, *(volatile u16 __force *)a);
}
#endif
#if IO_CONCAT(__IO_PREFIX,trivial_io_lq)
__EXTERN_INLINE unsigned int
IO_CONCAT(__IO_PREFIX,ioread32)(void __iomem *a)
{
return *(volatile u32 __force *)a;
}
__EXTERN_INLINE void
IO_CONCAT(__IO_PREFIX,iowrite32)(u32 b, void __iomem *a)
{
*(volatile u32 __force *)a = b;
}
#endif
#if IO_CONCAT(__IO_PREFIX,trivial_rw_bw) == 1
__EXTERN_INLINE u8
IO_CONCAT(__IO_PREFIX,readb)(const volatile void __iomem *a)
{
return __kernel_ldbu(*(const volatile u8 __force *)a);
}
__EXTERN_INLINE u16
IO_CONCAT(__IO_PREFIX,readw)(const volatile void __iomem *a)
{
return __kernel_ldwu(*(const volatile u16 __force *)a);
}
__EXTERN_INLINE void
IO_CONCAT(__IO_PREFIX,writeb)(u8 b, volatile void __iomem *a)
{
__kernel_stb(b, *(volatile u8 __force *)a);
}
__EXTERN_INLINE void
IO_CONCAT(__IO_PREFIX,writew)(u16 b, volatile void __iomem *a)
{
__kernel_stw(b, *(volatile u16 __force *)a);
}
#elif IO_CONCAT(__IO_PREFIX,trivial_rw_bw) == 2
__EXTERN_INLINE u8
IO_CONCAT(__IO_PREFIX,readb)(const volatile void __iomem *a)
{
return IO_CONCAT(__IO_PREFIX,ioread8)((void __iomem *)a);
}
__EXTERN_INLINE u16
IO_CONCAT(__IO_PREFIX,readw)(const volatile void __iomem *a)
{
return IO_CONCAT(__IO_PREFIX,ioread16)((void __iomem *)a);
}
__EXTERN_INLINE void
IO_CONCAT(__IO_PREFIX,writeb)(u8 b, volatile void __iomem *a)
{
IO_CONCAT(__IO_PREFIX,iowrite8)(b, (void __iomem *)a);
}
__EXTERN_INLINE void
IO_CONCAT(__IO_PREFIX,writew)(u16 b, volatile void __iomem *a)
{
IO_CONCAT(__IO_PREFIX,iowrite16)(b, (void __iomem *)a);
}
#endif
#if IO_CONCAT(__IO_PREFIX,trivial_rw_lq) == 1
__EXTERN_INLINE u32
IO_CONCAT(__IO_PREFIX,readl)(const volatile void __iomem *a)
{
return *(const volatile u32 __force *)a;
}
__EXTERN_INLINE u64
IO_CONCAT(__IO_PREFIX,readq)(const volatile void __iomem *a)
{
return *(const volatile u64 __force *)a;
}
__EXTERN_INLINE void
IO_CONCAT(__IO_PREFIX,writel)(u32 b, volatile void __iomem *a)
{
*(volatile u32 __force *)a = b;
}
__EXTERN_INLINE void
IO_CONCAT(__IO_PREFIX,writeq)(u64 b, volatile void __iomem *a)
{
*(volatile u64 __force *)a = b;
}
#endif
#if IO_CONCAT(__IO_PREFIX,trivial_iounmap)
__EXTERN_INLINE void IO_CONCAT(__IO_PREFIX,iounmap)(volatile void __iomem *a)
{
}
#endif
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