[PATCH v12 4/9] powerpc: iomap.c: introduce io{read|write}64_{lo_hi|hi_lo}

Logan Gunthorpe
2018-03-16T15:48:47Z

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>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
---
arch/powerpc/kernel/iomap.c | 40 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 40 insertions(+)

diff --git a/arch/powerpc/kernel/iomap.c b/arch/powerpc/kernel/iomap.c
index aab456ed2a00..5ac84efc6ede 100644
--- a/arch/powerpc/kernel/iomap.c
+++ b/arch/powerpc/kernel/iomap.c
@@ -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__ */

/*
--
2.11.0