linux/crypto/async_tx/async_memcpy.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * copy offload engine support
 *
 * Copyright © 2006, Intel Corporation.
 *
 *      Dan Williams <[email protected]>
 *
 *      with architecture considerations by:
 *      Neil Brown <[email protected]>
 *      Jeff Garzik <[email protected]>
 */
#include <linux/kernel.h>
#include <linux/highmem.h>
#include <linux/module.h>
#include <linux/mm.h>
#include <linux/dma-mapping.h>
#include <linux/async_tx.h>

/**
 * async_memcpy - attempt to copy memory with a dma engine.
 * @dest: destination page
 * @src: src page
 * @dest_offset: offset into 'dest' to start transaction
 * @src_offset: offset into 'src' to start transaction
 * @len: length in bytes
 * @submit: submission / completion modifiers
 *
 * honored flags: ASYNC_TX_ACK
 */
struct dma_async_tx_descriptor *
async_memcpy(struct page *dest, struct page *src, unsigned int dest_offset,
	     unsigned int src_offset, size_t len,
	     struct async_submit_ctl *submit)
{ … }
EXPORT_SYMBOL_GPL(…);

MODULE_AUTHOR(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;