[PATCH] add __iowrite64_copy

#include <asm/io.h>

void __iowrite32_copy(void __iomem *to, const void *from, size_t count);

void __iowrite64_copy(void __iomem *to, const void *from, size_t count);

#endif /* _LINUX_IO_H */

		__raw_writel(*src++, dst++);

}

EXPORT_SYMBOL_GPL(__iowrite32_copy);

/**

 * __iowrite64_copy - copy data to MMIO space, in 64-bit or 32-bit units

 * @to: destination, in MMIO space (must be 64-bit aligned)

 * @from: source (must be 64-bit aligned)

 * @count: number of 64-bit quantities to copy

 *

 * Copy data from kernel space to MMIO space, in units of 32 or 64 bits at a

 * time.  Order of access is not guaranteed, nor is a memory barrier

 * performed afterwards.

 */

void __attribute__((weak)) __iowrite64_copy(void __iomem *to,

					    const void *from,

					    size_t count)

{

#ifdef CONFIG_64BIT

	u64 __iomem *dst = to;

	const u64 *src = from;

	const u64 *end = src + count;

	while (src < end)

		__raw_writeq(*src++, dst++);

#else

	__iowrite32_copy(to, from, count * 2);

#endif

}

EXPORT_SYMBOL_GPL(__iowrite64_copy);