* [PATCH v3 4/8] powerpc: add io{read,write}64 accessors
[not found] <1463670405-1059-1-git-send-email-horia.geanta@nxp.com>
@ 2016-05-19 15:11 ` Horia Geantă
0 siblings, 0 replies; only message in thread
From: Horia Geantă @ 2016-05-19 15:11 UTC (permalink / raw)
To: Herbert Xu
Cc: linux-crypto, David S. Miller, Michael Ellerman, linuxppc-dev,
linux-kernel
This will allow device drivers to consistently use io{read,write}XX
also for 64-bit accesses.
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
---
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
^ permalink raw reply related [flat|nested] only message in thread