mirror of https://gitee.com/openkylin/linux.git
81 lines
1.8 KiB
C
81 lines
1.8 KiB
C
/*
|
|
* 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);
|
|
}
|