The patch titled
Subject: io-64-nonatomic: add io{read|write}64[be]{_lo_hi|_hi_lo} macros
has been added to the -mm tree. Its filename is
io-64-nonatomic-add-ioreadwrite64_lo_hi_hi_lo-macros.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/io-64-nonatomic-add-ioreadwrite64_lo_hi_hi_lo-macros.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/io-64-nonatomic-add-ioreadwrite64_lo_hi_hi_lo-macros.patch
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------------------------------------------------------
From: Logan Gunthorpe <logang@xxxxxxxxxxxx>
Subject: io-64-nonatomic: add io{read|write}64[be]{_lo_hi|_hi_lo} macros
This patch adds generic io{read|write}64[be]{_lo_hi|_hi_lo} macros if they
are not already defined by the architecture. (As they are provided by the
generic iomap library).
The patch also points io{read|write}64[be] to the variant specified by the
header name.
This is because new drivers are encouraged to use ioreadXX, et al instead
of readX[1], et al -- and mixing ioreadXX with readq is pretty ugly.
[1] LDD3: section 9.4.2
Link: http://lkml.kernel.org/r/20180622194752.11221-5-logang@xxxxxxxxxxxx
Signed-off-by: Logan Gunthorpe <logang@xxxxxxxxxxxx>
Reviewed-by: Andy Shevchenko <andy.shevchenko@xxxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Alan Cox <gnomes@xxxxxxxxxxxxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Allen Hubbe <Allen.Hubbe@xxxxxxxx>
Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Cc: Dan Douglass <dan.douglass@xxxxxxx>
Cc: Dave Jiang <dave.jiang@xxxxxxxxx>
Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
Cc: Helge Deller <deller@xxxxxx>
Cc: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Cc: Horia Geantă <horia.geanta@xxxxxxx>
Cc: "James E.J. Bottomley" <jejb@xxxxxxxxxxxxxxxx>
Cc: Jon Mason <jdmason@xxxxxxxx>
Cc: Kate Stewart <kstewart@xxxxxxxxxxxxxxxxxxx>
Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Cc: Nicholas Piggin <npiggin@xxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Philippe Ombredanne <pombredanne@xxxxxxxx>
Cc: Suresh Warrier <warrier@xxxxxxxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/io-64-nonatomic-hi-lo.h | 64 ++++++++++++++++++++++++
include/linux/io-64-nonatomic-lo-hi.h | 64 ++++++++++++++++++++++++
2 files changed, 128 insertions(+)
diff -puN include/linux/io-64-nonatomic-hi-lo.h~io-64-nonatomic-add-ioreadwrite64_lo_hi_hi_lo-macros include/linux/io-64-nonatomic-hi-lo.h
--- a/include/linux/io-64-nonatomic-hi-lo.h~io-64-nonatomic-add-ioreadwrite64_lo_hi_hi_lo-macros
+++ a/include/linux/io-64-nonatomic-hi-lo.h
@@ -55,4 +55,68 @@ static inline void hi_lo_writeq_relaxed(
#define writeq_relaxed hi_lo_writeq_relaxed
#endif
+#ifndef ioread64_hi_lo
+#define ioread64_hi_lo ioread64_hi_lo
+static inline u64 ioread64_hi_lo(void __iomem *addr)
+{
+ u32 low, high;
+
+ high = ioread32(addr + sizeof(u32));
+ low = ioread32(addr);
+
+ return low + ((u64)high << 32);
+}
+#endif
+
+#ifndef iowrite64_hi_lo
+#define iowrite64_hi_lo iowrite64_hi_lo
+static inline void iowrite64_hi_lo(u64 val, void __iomem *addr)
+{
+ iowrite32(val >> 32, addr + sizeof(u32));
+ iowrite32(val, addr);
+}
+#endif
+
+#ifndef ioread64be_hi_lo
+#define ioread64be_hi_lo ioread64be_hi_lo
+static inline u64 ioread64be_hi_lo(void __iomem *addr)
+{
+ u32 low, high;
+
+ high = ioread32be(addr);
+ low = ioread32be(addr + sizeof(u32));
+
+ return low + ((u64)high << 32);
+}
+#endif
+
+#ifndef iowrite64be_hi_lo
+#define iowrite64be_hi_lo iowrite64be_hi_lo
+static inline void iowrite64be_hi_lo(u64 val, void __iomem *addr)
+{
+ iowrite32be(val >> 32, addr);
+ iowrite32be(val, addr + sizeof(u32));
+}
+#endif
+
+#ifndef ioread64
+#define ioread64_is_nonatomic
+#define ioread64 ioread64_hi_lo
+#endif
+
+#ifndef iowrite64
+#define iowrite64_is_nonatomic
+#define iowrite64 iowrite64_hi_lo
+#endif
+
+#ifndef ioread64be
+#define ioread64be_is_nonatomic
+#define ioread64be ioread64be_hi_lo
+#endif
+
+#ifndef iowrite64be
+#define iowrite64be_is_nonatomic
+#define iowrite64be iowrite64be_hi_lo
+#endif
+
#endif /* _LINUX_IO_64_NONATOMIC_HI_LO_H_ */
diff -puN include/linux/io-64-nonatomic-lo-hi.h~io-64-nonatomic-add-ioreadwrite64_lo_hi_hi_lo-macros include/linux/io-64-nonatomic-lo-hi.h
--- a/include/linux/io-64-nonatomic-lo-hi.h~io-64-nonatomic-add-ioreadwrite64_lo_hi_hi_lo-macros
+++ a/include/linux/io-64-nonatomic-lo-hi.h
@@ -55,4 +55,68 @@ static inline void lo_hi_writeq_relaxed(
#define writeq_relaxed lo_hi_writeq_relaxed
#endif
+#ifndef ioread64_lo_hi
+#define ioread64_lo_hi ioread64_lo_hi
+static inline u64 ioread64_lo_hi(void __iomem *addr)
+{
+ u32 low, high;
+
+ low = ioread32(addr);
+ high = ioread32(addr + sizeof(u32));
+
+ return low + ((u64)high << 32);
+}
+#endif
+
+#ifndef iowrite64_lo_hi
+#define iowrite64_lo_hi iowrite64_lo_hi
+static inline void iowrite64_lo_hi(u64 val, void __iomem *addr)
+{
+ iowrite32(val, addr);
+ iowrite32(val >> 32, addr + sizeof(u32));
+}
+#endif
+
+#ifndef ioread64be_lo_hi
+#define ioread64be_lo_hi ioread64be_lo_hi
+static inline u64 ioread64be_lo_hi(void __iomem *addr)
+{
+ u32 low, high;
+
+ low = ioread32be(addr + sizeof(u32));
+ high = ioread32be(addr);
+
+ return low + ((u64)high << 32);
+}
+#endif
+
+#ifndef iowrite64be_lo_hi
+#define iowrite64be_lo_hi iowrite64be_lo_hi
+static inline void iowrite64be_lo_hi(u64 val, void __iomem *addr)
+{
+ iowrite32be(val, addr + sizeof(u32));
+ iowrite32be(val >> 32, addr);
+}
+#endif
+
+#ifndef ioread64
+#define ioread64_is_nonatomic
+#define ioread64 ioread64_lo_hi
+#endif
+
+#ifndef iowrite64
+#define iowrite64_is_nonatomic
+#define iowrite64 iowrite64_lo_hi
+#endif
+
+#ifndef ioread64be
+#define ioread64be_is_nonatomic
+#define ioread64be ioread64be_lo_hi
+#endif
+
+#ifndef iowrite64be
+#define iowrite64be_is_nonatomic
+#define iowrite64be iowrite64be_lo_hi
+#endif
+
#endif /* _LINUX_IO_64_NONATOMIC_LO_HI_H_ */
_
Patches currently in -mm which might be from logang@xxxxxxxxxxxx are
iomap-use-non-raw-io-functions-for-ioreadwritexxbe.patch
parisc-iomap-introduce-ioreadwrite64.patch
iomap-introduce-ioreadwrite64_lo_hihi_lo.patch
io-64-nonatomic-add-ioreadwrite64_lo_hi_hi_lo-macros.patch
ntb-ntb_hw_intel-use-io-64-nonatomic-instead-of-in-driver-hacks.patch
crypto-caam-cleanup-config_64bit-ifdefs-when-using-ioreadwrite64.patch
ntb-ntb_hw_switchtec-cleanup-64bit-io-defines-to-use-the-common-header.patch
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