This will allow device drivers to consistently use io{read,write}XX
also for 64-bit accesses.
Acked-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Signed-off-by: Horia Geantă <horia.geanta@xxxxxxx>
---
arch/powerpc/kernel/iomap.c | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
diff --git a/arch/powerpc/kernel/iomap.c b/arch/powerpc/kernel/iomap.c
index 12e48d56f771..3963f0b68d52 100644
--- a/arch/powerpc/kernel/iomap.c
+++ b/arch/powerpc/kernel/iomap.c
@@ -38,6 +38,18 @@ EXPORT_SYMBOL(ioread16);
EXPORT_SYMBOL(ioread16be);
EXPORT_SYMBOL(ioread32);
EXPORT_SYMBOL(ioread32be);
+#ifdef __powerpc64__
+u64 ioread64(void __iomem *addr)
+{
+ return readq(addr);
+}
+u64 ioread64be(void __iomem *addr)
+{
+ return readq_be(addr);
+}
+EXPORT_SYMBOL(ioread64);
+EXPORT_SYMBOL(ioread64be);
+#endif /* __powerpc64__ */
void iowrite8(u8 val, void __iomem *addr)
{
@@ -64,6 +76,18 @@ EXPORT_SYMBOL(iowrite16);
EXPORT_SYMBOL(iowrite16be);
EXPORT_SYMBOL(iowrite32);
EXPORT_SYMBOL(iowrite32be);
+#ifdef __powerpc64__
+void iowrite64(u64 val, void __iomem *addr)
+{
+ writeq(val, addr);
+}
+void iowrite64be(u64 val, void __iomem *addr)
+{
+ writeq_be(val, addr);
+}
+EXPORT_SYMBOL(iowrite64);
+EXPORT_SYMBOL(iowrite64be);
+#endif /* __powerpc64__ */
/*
* These are the "repeat read/write" functions. Note the
--
2.4.4
--
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