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From: Logan Gunthorpe <logang@deltatee.com>
To: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org,
	linux-ntb@googlegroups.com, linux-crypto@vger.kernel.org,
	Andrew Morton <akpm@linux-foundation.org>
Cc: "Arnd Bergmann" <arnd@arndb.de>,
	"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
	"Andy Shevchenko" <andy.shevchenko@gmail.com>,
	"Horia Geantă" <horia.geanta@nxp.com>,
	"Logan Gunthorpe" <logang@deltatee.com>,
	"James E.J. Bottomley" <jejb@parisc-linux.org>,
	"Philippe Ombredanne" <pombredanne@nexb.com>,
	"Kate Stewart" <kstewart@linuxfoundation.org>,
	"Thomas Gleixner" <tglx@linutronix.de>
Subject: [PATCH v17 2/7] parisc: iomap: introduce io{read|write}64
Date: Mon,  7 May 2018 14:36:00 -0600	[thread overview]
Message-ID: <20180507203605.15865-3-logang@deltatee.com> (raw)
In-Reply-To: <20180507203605.15865-1-logang@deltatee.com>

Add support for io{read|write}64() functions in parisc architecture.
These are pretty straightforward copies of similar functions which
make use of readq and writeq.

Also, indicate that the lo_hi and hi_lo variants of these functions
are not provided by this architecture.

Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Helge Deller <deller@gmx.de>
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Philippe Ombredanne <pombredanne@nexb.com>
Cc: Kate Stewart <kstewart@linuxfoundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
---
 arch/parisc/include/asm/io.h |  9 +++++++
 arch/parisc/lib/iomap.c      | 64 ++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 73 insertions(+)

diff --git a/arch/parisc/include/asm/io.h b/arch/parisc/include/asm/io.h
index afe493b23d04..30a8315d5c07 100644
--- a/arch/parisc/include/asm/io.h
+++ b/arch/parisc/include/asm/io.h
@@ -311,6 +311,15 @@ extern void outsl (unsigned long port, const void *src, unsigned long count);
  * value for either 32 or 64 bit mode */
 #define F_EXTEND(x) ((unsigned long)((x) | (0xffffffff00000000ULL)))
 
+#define ioread64 ioread64
+#define ioread64be ioread64be
+#define iowrite64 iowrite64
+#define iowrite64be iowrite64be
+extern u64 ioread64(void __iomem *addr);
+extern u64 ioread64be(void __iomem *addr);
+extern void iowrite64(u64 val, void __iomem *addr);
+extern void iowrite64be(u64 val, void __iomem *addr);
+
 #include <asm-generic/iomap.h>
 
 /*
diff --git a/arch/parisc/lib/iomap.c b/arch/parisc/lib/iomap.c
index 4b19e6e64fb7..0195aec657e2 100644
--- a/arch/parisc/lib/iomap.c
+++ b/arch/parisc/lib/iomap.c
@@ -48,11 +48,15 @@ struct iomap_ops {
 	unsigned int (*read16be)(void __iomem *);
 	unsigned int (*read32)(void __iomem *);
 	unsigned int (*read32be)(void __iomem *);
+	u64 (*read64)(void __iomem *);
+	u64 (*read64be)(void __iomem *);
 	void (*write8)(u8, void __iomem *);
 	void (*write16)(u16, void __iomem *);
 	void (*write16be)(u16, void __iomem *);
 	void (*write32)(u32, void __iomem *);
 	void (*write32be)(u32, void __iomem *);
+	void (*write64)(u64, void __iomem *);
+	void (*write64be)(u64, void __iomem *);
 	void (*read8r)(void __iomem *, void *, unsigned long);
 	void (*read16r)(void __iomem *, void *, unsigned long);
 	void (*read32r)(void __iomem *, void *, unsigned long);
@@ -171,6 +175,16 @@ static unsigned int iomem_read32be(void __iomem *addr)
 	return __raw_readl(addr);
 }
 
+static u64 iomem_read64(void __iomem *addr)
+{
+	return readq(addr);
+}
+
+static u64 iomem_read64be(void __iomem *addr)
+{
+	return __raw_readq(addr);
+}
+
 static void iomem_write8(u8 datum, void __iomem *addr)
 {
 	writeb(datum, addr);
@@ -196,6 +210,16 @@ static void iomem_write32be(u32 datum, void __iomem *addr)
 	__raw_writel(datum, addr);
 }
 
+static void iomem_write64(u64 datum, void __iomem *addr)
+{
+	writel(datum, addr);
+}
+
+static void iomem_write64be(u64 datum, void __iomem *addr)
+{
+	__raw_writel(datum, addr);
+}
+
 static void iomem_read8r(void __iomem *addr, void *dst, unsigned long count)
 {
 	while (count--) {
@@ -250,11 +274,15 @@ static const struct iomap_ops iomem_ops = {
 	.read16be = iomem_read16be,
 	.read32 = iomem_read32,
 	.read32be = iomem_read32be,
+	.read64 = iomem_read64,
+	.read64be = iomem_read64be,
 	.write8 = iomem_write8,
 	.write16 = iomem_write16,
 	.write16be = iomem_write16be,
 	.write32 = iomem_write32,
 	.write32be = iomem_write32be,
+	.write64 = iomem_write64,
+	.write64be = iomem_write64be,
 	.read8r = iomem_read8r,
 	.read16r = iomem_read16r,
 	.read32r = iomem_read32r,
@@ -304,6 +332,20 @@ unsigned int ioread32be(void __iomem *addr)
 	return *((u32 *)addr);
 }
 
+u64 ioread64(void __iomem *addr)
+{
+	if (unlikely(INDIRECT_ADDR(addr)))
+		return iomap_ops[ADDR_TO_REGION(addr)]->read64(addr);
+	return le64_to_cpup((u64 *)addr);
+}
+
+u64 ioread64be(void __iomem *addr)
+{
+	if (unlikely(INDIRECT_ADDR(addr)))
+		return iomap_ops[ADDR_TO_REGION(addr)]->read64be(addr);
+	return *((u64 *)addr);
+}
+
 void iowrite8(u8 datum, void __iomem *addr)
 {
 	if (unlikely(INDIRECT_ADDR(addr))) {
@@ -349,6 +391,24 @@ void iowrite32be(u32 datum, void __iomem *addr)
 	}
 }
 
+void iowrite64(u64 datum, void __iomem *addr)
+{
+	if (unlikely(INDIRECT_ADDR(addr))) {
+		iomap_ops[ADDR_TO_REGION(addr)]->write64(datum, addr);
+	} else {
+		*((u64 *)addr) = cpu_to_le64(datum);
+	}
+}
+
+void iowrite64be(u64 datum, void __iomem *addr)
+{
+	if (unlikely(INDIRECT_ADDR(addr))) {
+		iomap_ops[ADDR_TO_REGION(addr)]->write64be(datum, addr);
+	} else {
+		*((u64 *)addr) = datum;
+	}
+}
+
 /* Repeating interfaces */
 
 void ioread8_rep(void __iomem *addr, void *dst, unsigned long count)
@@ -449,11 +509,15 @@ EXPORT_SYMBOL(ioread16);
 EXPORT_SYMBOL(ioread16be);
 EXPORT_SYMBOL(ioread32);
 EXPORT_SYMBOL(ioread32be);
+EXPORT_SYMBOL(ioread64);
+EXPORT_SYMBOL(ioread64be);
 EXPORT_SYMBOL(iowrite8);
 EXPORT_SYMBOL(iowrite16);
 EXPORT_SYMBOL(iowrite16be);
 EXPORT_SYMBOL(iowrite32);
 EXPORT_SYMBOL(iowrite32be);
+EXPORT_SYMBOL(iowrite64);
+EXPORT_SYMBOL(iowrite64be);
 EXPORT_SYMBOL(ioread8_rep);
 EXPORT_SYMBOL(ioread16_rep);
 EXPORT_SYMBOL(ioread32_rep);
-- 
2.11.0

  parent reply	other threads:[~2018-05-07 20:36 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-07 20:35 [PATCH v17 0/7] Add io{read|write}64 to io-64-atomic headers Logan Gunthorpe
2018-05-07 20:35 ` [PATCH v17 1/7] iomap: Use non-raw io functions for io{read|write}XXbe Logan Gunthorpe
2018-05-07 20:36 ` Logan Gunthorpe [this message]
2018-05-07 20:36 ` [PATCH v17 3/7] iomap: introduce io{read|write}64_{lo_hi|hi_lo} Logan Gunthorpe
2018-05-07 20:36 ` [PATCH v17 4/7] io-64-nonatomic: add io{read|write}64[be]{_lo_hi|_hi_lo} macros Logan Gunthorpe
2018-05-07 20:36 ` [PATCH v17 5/7] ntb: ntb_hw_intel: use io-64-nonatomic instead of in-driver hacks Logan Gunthorpe
2018-05-07 20:36 ` [PATCH v17 6/7] crypto: caam: cleanup CONFIG_64BIT ifdefs when using io{read|write}64 Logan Gunthorpe
2018-05-07 20:36 ` [PATCH v17 7/7] ntb: ntb_hw_switchtec: Cleanup 64bit IO defines to use the common header Logan Gunthorpe

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