Commit c2327da0 authored by Andy Shevchenko's avatar Andy Shevchenko Committed by Ingo Molnar
Browse files

x86/io: Remove mem*io() duplications 



Generic header defines memset_io, memcpy_fromio(). and memcpy_toio().

Reuse them from generic header and remove in x86 code.
Move the descriptions to the generic header as well.

Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Baolin Wang <baolin.wang@spreadtrum.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: intel-gfx@lists.freedesktop.org
Cc: linux-i2c@vger.kernel.org
Cc: wsa@the-dreams.de
Link: http://lkml.kernel.org/r/20170630170934.83028-4-andriy.shevchenko@linux.intel.com


Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
parent 31952011

arch/x86/include/asm/io.h

+0 −45
Original line number Diff line number Diff line
@@ -220,51 +220,6 @@ extern void set_iounmap_nonlazy(void); 
 */

#define xlate_dev_kmem_ptr(p)	p



/**

 * memset_io	Set a range of I/O memory to a constant value

 * @addr:	The beginning of the I/O-memory range to set

 * @val:	The value to set the memory to

 * @count:	The number of bytes to set

 *

 * Set a range of I/O memory to a given value.

 */

static inline void

memset_io(volatile void __iomem *addr, unsigned char val, size_t count)

{

	memset((void __force *)addr, val, count);

}

#define memset_io(dst,c,count) memset_io(dst,c,count)



/**

 * memcpy_fromio	Copy a block of data from I/O memory

 * @dst:		The (RAM) destination for the copy

 * @src:		The (I/O memory) source for the data

 * @count:		The number of bytes to copy

 *

 * Copy a block of data from I/O memory.

 */

static inline void

memcpy_fromio(void *dst, const volatile void __iomem *src, size_t count)

{

	memcpy(dst, (const void __force *)src, count);

}

#define memcpy_fromio(to,from,count) memcpy_fromio(to,from,count)



/**

 * memcpy_toio		Copy a block of data into I/O memory

 * @dst:		The (I/O memory) destination for the copy

 * @src:		The (RAM) source for the data

 * @count:		The number of bytes to copy

 *

 * Copy a block of data to I/O memory.

 */

static inline void

memcpy_toio(volatile void __iomem *dst, const void *src, size_t count)

{

	memcpy((void __force *)dst, src, count);

}

#define memcpy_toio(to,from,count) memcpy_toio(to,from,count)



/*

 * ISA space is 'always mapped' on a typical x86 system, no need to

 * explicitly ioremap() it. The fact that the ISA IO space is mapped

include/asm-generic/io.h

+24 −0
Original line number Diff line number Diff line
@@ -954,6 +954,14 @@ static inline void *bus_to_virt(unsigned long address) 


#ifndef memset_io

#define memset_io memset_io

/**

 * memset_io	Set a range of I/O memory to a constant value

 * @addr:	The beginning of the I/O-memory range to set

 * @val:	The value to set the memory to

 * @count:	The number of bytes to set

 *

 * Set a range of I/O memory to a given value.

 */

static inline void memset_io(volatile void __iomem *addr, int value,

			     size_t size)

{
@@ -963,6 +971,14 @@ static inline void memset_io(volatile void __iomem *addr, int value, 


#ifndef memcpy_fromio

#define memcpy_fromio memcpy_fromio

/**

 * memcpy_fromio	Copy a block of data from I/O memory

 * @dst:		The (RAM) destination for the copy

 * @src:		The (I/O memory) source for the data

 * @count:		The number of bytes to copy

 *

 * Copy a block of data from I/O memory.

 */

static inline void memcpy_fromio(void *buffer,

				 const volatile void __iomem *addr,

				 size_t size)
@@ -973,6 +989,14 @@ static inline void memcpy_fromio(void *buffer, 


#ifndef memcpy_toio

#define memcpy_toio memcpy_toio

/**

 * memcpy_toio		Copy a block of data into I/O memory

 * @dst:		The (I/O memory) destination for the copy

 * @src:		The (RAM) source for the data

 * @count:		The number of bytes to copy

 *

 * Copy a block of data to I/O memory.

 */

static inline void memcpy_toio(volatile void __iomem *addr, const void *buffer,

			       size_t size)

{

CRA Git | Maintained and supported by SUSTech CRA and CCSE