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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: Logan Gunthorpe <logang@deltatee.com>
Tested-by: Horia Geantă <horia.geanta@nxp.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
hifive-unleashed-5.1
Logan Gunthorpe 2018-03-27 17:08:29 -06:00 committed by Michael Ellerman
parent ef237039c5
commit 07c3d9eaa4
1 changed files with 40 additions and 0 deletions
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40
arch/powerpc/kernel/iomap.c
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@ -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__ */
/*