diff mbox

[v2,2/8] asm-generic/io.h: add io{read,write}64 accessors

Message ID 1462462556-27684-1-git-send-email-horia.geanta@nxp.com (mailing list archive)
State Superseded
Delegated to: Herbert Xu
Headers show

Commit Message

Horia Geanta May 5, 2016, 3:35 p.m. UTC 
This will allow device drivers to consistently use io{read,write}XX
also for 64-bit accesses.

Signed-off-by: Horia Geant? <horia.geanta@nxp.com>
---
 include/asm-generic/io.h    | 63 +++++++++++++++++++++++++++++++++++++++++++++
 include/asm-generic/iomap.h |  8 ++++++
 2 files changed, 71 insertions(+)

Comments

Arnd Bergmann May 5, 2016, 4:29 p.m. UTC | #1 
On Thursday 05 May 2016 18:35:56 Horia Geant? wrote:
> This will allow device drivers to consistently use io{read,write}XX
> also for 64-bit accesses.
> 
> Signed-off-by: Horia Geant? <horia.geanta@nxp.com>
> 

Acked-by: Arnd Bergmann <arnd@arndb.de>
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Herbert Xu May 10, 2016, 9:33 a.m. UTC | #2 
On Thu, May 05, 2016 at 06:35:56PM +0300, Horia Geant? wrote:
> This will allow device drivers to consistently use io{read,write}XX
> also for 64-bit accesses.
> 
> Signed-off-by: Horia Geant? <horia.geanta@nxp.com>

I don't see patch 1/8.

Cheers,
Herbert Xu May 10, 2016, 9:34 a.m. UTC | #3 
On Tue, May 10, 2016 at 05:33:21PM +0800, Herbert Xu wrote:
> On Thu, May 05, 2016 at 06:35:56PM +0300, Horia Geant? wrote:
> > This will allow device drivers to consistently use io{read,write}XX
> > also for 64-bit accesses.
> > 
> > Signed-off-by: Horia Geant? <horia.geanta@nxp.com>
> 
> I don't see patch 1/8.

Never mind, I've found it now.

Cheers,
diff mbox

Patch

diff --git a/include/asm-generic/io.h b/include/asm-generic/io.h
index b79fb2c248a1..2af6ea95762d 100644
--- a/include/asm-generic/io.h
+++ b/include/asm-generic/io.h
@@ -585,6 +585,16 @@  static inline u32 ioread32(const volatile void __iomem *addr)
 }
 #endif
 
+#ifdef CONFIG_64BIT
+#ifndef ioread64
+#define ioread64 ioread64
+static inline u64 ioread64(const volatile void __iomem *addr)
+{
+	return readq(addr);
+}
+#endif
+#endif /* CONFIG_64BIT */
+
 #ifndef iowrite8
 #define iowrite8 iowrite8
 static inline void iowrite8(u8 value, volatile void __iomem *addr)
@@ -609,6 +619,16 @@  static inline void iowrite32(u32 value, volatile void __iomem *addr)
 }
 #endif
 
+#ifdef CONFIG_64BIT
+#ifndef iowrite64
+#define iowrite64 iowrite64
+static inline void iowrite64(u64 value, volatile void __iomem *addr)
+{
+	writeq(value, addr);
+}
+#endif
+#endif /* CONFIG_64BIT */
+
 #ifndef ioread16be
 #define ioread16be ioread16be
 static inline u16 ioread16be(const volatile void __iomem *addr)
@@ -625,6 +645,16 @@  static inline u32 ioread32be(const volatile void __iomem *addr)
 }
 #endif
 
+#ifdef CONFIG_64BIT
+#ifndef ioread64be
+#define ioread64be ioread64be
+static inline u64 ioread64be(const volatile void __iomem *addr)
+{
+	return swab64(readq(addr));
+}
+#endif
+#endif /* CONFIG_64BIT */
+
 #ifndef iowrite16be
 #define iowrite16be iowrite16be
 static inline void iowrite16be(u16 value, void volatile __iomem *addr)
@@ -641,6 +671,16 @@  static inline void iowrite32be(u32 value, volatile void __iomem *addr)
 }
 #endif
 
+#ifdef CONFIG_64BIT
+#ifndef iowrite64be
+#define iowrite64be iowrite64be
+static inline void iowrite64be(u64 value, volatile void __iomem *addr)
+{
+	writeq(swab64(value), addr);
+}
+#endif
+#endif /* CONFIG_64BIT */
+
 #ifndef ioread8_rep
 #define ioread8_rep ioread8_rep
 static inline void ioread8_rep(const volatile void __iomem *addr, void *buffer,
@@ -668,6 +708,17 @@  static inline void ioread32_rep(const volatile void __iomem *addr,
 }
 #endif
 
+#ifdef CONFIG_64BIT
+#ifndef ioread64_rep
+#define ioread64_rep ioread64_rep
+static inline void ioread64_rep(const volatile void __iomem *addr,
+				void *buffer, unsigned int count)
+{
+	readsq(addr, buffer, count);
+}
+#endif
+#endif /* CONFIG_64BIT */
+
 #ifndef iowrite8_rep
 #define iowrite8_rep iowrite8_rep
 static inline void iowrite8_rep(volatile void __iomem *addr,
@@ -697,6 +748,18 @@  static inline void iowrite32_rep(volatile void __iomem *addr,
 	writesl(addr, buffer, count);
 }
 #endif
+
+#ifdef CONFIG_64BIT
+#ifndef iowrite64_rep
+#define iowrite64_rep iowrite64_rep
+static inline void iowrite64_rep(volatile void __iomem *addr,
+				 const void *buffer,
+				 unsigned int count)
+{
+	writesq(addr, buffer, count);
+}
+#endif
+#endif /* CONFIG_64BIT */
 #endif /* CONFIG_GENERIC_IOMAP */
 
 #ifdef __KERNEL__
diff --git a/include/asm-generic/iomap.h b/include/asm-generic/iomap.h
index d8f8622fa044..650fede33c25 100644
--- a/include/asm-generic/iomap.h
+++ b/include/asm-generic/iomap.h
@@ -30,12 +30,20 @@  extern unsigned int ioread16(void __iomem *);
 extern unsigned int ioread16be(void __iomem *);
 extern unsigned int ioread32(void __iomem *);
 extern unsigned int ioread32be(void __iomem *);
+#ifdef CONFIG_64BIT
+extern u64 ioread64(void __iomem *);
+extern u64 ioread64be(void __iomem *);
+#endif
 
 extern void iowrite8(u8, void __iomem *);
 extern void iowrite16(u16, void __iomem *);
 extern void iowrite16be(u16, void __iomem *);
 extern void iowrite32(u32, void __iomem *);
 extern void iowrite32be(u32, void __iomem *);
+#ifdef CONFIG_64BIT
+extern void iowrite64(u64, void __iomem *);
+extern void iowrite64be(u64, void __iomem *);
+#endif
 
 /*
  * "string" versions of the above. Note that they