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/*
* Huawei HiNIC PCI Express Linux driver
* Copyright(c) 2017 Huawei Technologies Co., Ltd
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
*/
#include <linux/kernel.h>
#include <linux/types.h>
#include <asm/byteorder.h>
#include "hinic_common.h"
/**
* hinic_cpu_to_be32 - convert data to big endian 32 bit format
* @data: the data to convert
* @len: length of data to convert
**/
void hinic_cpu_to_be32(void *data, int len)
{
u32 *mem = data;
int i;
len = len / sizeof(u32);
for (i = 0; i < len; i++) {
*mem = cpu_to_be32(*mem);
mem++;
}
}
/**
* hinic_be32_to_cpu - convert data from big endian 32 bit format
* @data: the data to convert
* @len: length of data to convert
**/
void hinic_be32_to_cpu(void *data, int len)
{
u32 *mem = data;
int i;
len = len / sizeof(u32);
for (i = 0; i < len; i++) {
*mem = be32_to_cpu(*mem);
mem++;
}
}
/**
* hinic_set_sge - set dma area in scatter gather entry
* @sge: scatter gather entry
* @addr: dma address
* @len: length of relevant data in the dma address
**/
void hinic_set_sge(struct hinic_sge *sge, dma_addr_t addr, int len)
{
sge->hi_addr = upper_32_bits(addr);
sge->lo_addr = lower_32_bits(addr);
sge->len = len;
}
/**
* hinic_sge_to_dma - get dma address from scatter gather entry
* @sge: scatter gather entry
*
* Return dma address of sg entry
**/
dma_addr_t hinic_sge_to_dma(struct hinic_sge *sge)
{
return (dma_addr_t)((((u64)sge->hi_addr) << 32) | sge->lo_addr);
}
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