Commit 7d1689a2 authored by Logan Gunthorpe's avatar Logan Gunthorpe Committed by Greg Kroah-Hartman
Browse files

parisc: iomap: introduce io{read|write}64 



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: default avatarLogan Gunthorpe <logang@deltatee.com>
Reviewed-by: default avatarAndy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: default avatarHelge 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>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent aecc787c

arch/parisc/include/asm/io.h

+9 −0
Original line number Diff line number Diff line
@@ -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>



/*

arch/parisc/lib/iomap.c

+64 −0
Original line number Diff line number Diff line
@@ -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);

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