Commit 07c3d9ea authored by Logan Gunthorpe's avatar Logan Gunthorpe Committed by Michael Ellerman
Browse files

powerpc: iomap.c: introduce io{read|write}64_{lo_hi|hi_lo} 



These functions will be introduced into the generic iomap.c so they
can deal with PIO accesses in hi-lo/lo-hi variants. Thus, the powerpc
version of iomap.c will need to provide the same functions even
though, in this arch, they are identical to the regular
io{read|write}64 functions.

Signed-off-by: default avatarLogan Gunthorpe <logang@deltatee.com>
Tested-by: default avatarHoria Geantă <horia.geanta@nxp.com>
Reviewed-by: default avatarAndy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent ef237039

arch/powerpc/kernel/iomap.c

+40 −0
Original line number Diff line number Diff line
@@ -45,12 +45,32 @@ u64 ioread64(void __iomem *addr) 
{

	return readq(addr);

}

u64 ioread64_lo_hi(void __iomem *addr)

{

	return readq(addr);

}

u64 ioread64_hi_lo(void __iomem *addr)

{

	return readq(addr);

}

u64 ioread64be(void __iomem *addr)

{

	return readq_be(addr);

}

u64 ioread64be_lo_hi(void __iomem *addr)

{

	return readq_be(addr);

}

u64 ioread64be_hi_lo(void __iomem *addr)

{

	return readq_be(addr);

}

EXPORT_SYMBOL(ioread64);

EXPORT_SYMBOL(ioread64_lo_hi);

EXPORT_SYMBOL(ioread64_hi_lo);

EXPORT_SYMBOL(ioread64be);

EXPORT_SYMBOL(ioread64be_lo_hi);

EXPORT_SYMBOL(ioread64be_hi_lo);

#endif /* __powerpc64__ */



void iowrite8(u8 val, void __iomem *addr)
@@ -83,12 +103,32 @@ void iowrite64(u64 val, void __iomem *addr) 
{

	writeq(val, addr);

}

void iowrite64_lo_hi(u64 val, void __iomem *addr)

{

	writeq(val, addr);

}

void iowrite64_hi_lo(u64 val, void __iomem *addr)

{

	writeq(val, addr);

}

void iowrite64be(u64 val, void __iomem *addr)

{

	writeq_be(val, addr);

}

void iowrite64be_lo_hi(u64 val, void __iomem *addr)

{

	writeq_be(val, addr);

}

void iowrite64be_hi_lo(u64 val, void __iomem *addr)

{

	writeq_be(val, addr);

}

EXPORT_SYMBOL(iowrite64);

EXPORT_SYMBOL(iowrite64_lo_hi);

EXPORT_SYMBOL(iowrite64_hi_lo);

EXPORT_SYMBOL(iowrite64be);

EXPORT_SYMBOL(iowrite64be_lo_hi);

EXPORT_SYMBOL(iowrite64be_hi_lo);

#endif /* __powerpc64__ */



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