// SPDX-License-Identifier: GPL-2.0-only/* * Based on arch/arm/kernel/io.c * * Copyright (C) 2012 ARM Ltd. */ #include <linux/export.h>#include <linux/types.h>#include <linux/io.h> /* * This generates a memcpy that works on a from/to address which is aligned to * bits. Count is in terms of the number of bits sized quantities to copy. It * optimizes to use the STR groupings when possible so that it is WC friendly. */#define memcpy_toio_aligned(to, from, count, bits)                        \	({                                                                \		volatile u##bits __iomem *_to = to;                       \		const u##bits *_from = from;                              \		size_t _count = count;                                    \		const u##bits *_end_from = _from + ALIGN_DOWN(_count, 8); \                                                                          \		for (; _from < _end_from; _from += 8, _to += 8)           \			__const_memcpy_toio_aligned##bits(_to, _from, 8); \		if ((_count % 8) >= 4) {                                  \			__const_memcpy_toio_aligned##bits(_to, _from, 4); \			_from += 4;                                       \			_to += 4;                                         \		}                                                         \		if ((_count % 4) >= 2) {                                  \			__const_memcpy_toio_aligned##bits(_to, _from, 2); \			_from += 2;                                       \			_to += 2;                                         \		}                                                         \		if (_count % 2)                                           \			__const_memcpy_toio_aligned##bits(_to, _from, 1); \	}) void __iowrite64_copy_full(void __iomem *to, const void *from, size_t count){	memcpy_toio_aligned(to, from, count, 64);	dgh();}EXPORT_SYMBOL(__iowrite64_copy_full); void __iowrite32_copy_full(void __iomem *to, const void *from, size_t count){	memcpy_toio_aligned(to, from, count, 32);	dgh();}EXPORT_SYMBOL(__iowrite32_copy_full);