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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * Huawei HiNIC PCI Express Linux driver4 * Copyright(c) 2017 Huawei Technologies Co., Ltd5 */6 7#include <linux/kernel.h>8#include <linux/types.h>9#include <asm/byteorder.h>10 11#include "hinic_common.h"12 13/**14 * hinic_cpu_to_be32 - convert data to big endian 32 bit format15 * @data: the data to convert16 * @len: length of data to convert17 **/18void hinic_cpu_to_be32(void *data, int len)19{20 u32 *mem = data;21 int i;22 23 len = len / sizeof(u32);24 25 for (i = 0; i < len; i++) {26 *mem = cpu_to_be32(*mem);27 mem++;28 }29}30 31/**32 * hinic_be32_to_cpu - convert data from big endian 32 bit format33 * @data: the data to convert34 * @len: length of data to convert35 **/36void hinic_be32_to_cpu(void *data, int len)37{38 u32 *mem = data;39 int i;40 41 len = len / sizeof(u32);42 43 for (i = 0; i < len; i++) {44 *mem = be32_to_cpu(*mem);45 mem++;46 }47}48 49/**50 * hinic_set_sge - set dma area in scatter gather entry51 * @sge: scatter gather entry52 * @addr: dma address53 * @len: length of relevant data in the dma address54 **/55void hinic_set_sge(struct hinic_sge *sge, dma_addr_t addr, int len)56{57 sge->hi_addr = upper_32_bits(addr);58 sge->lo_addr = lower_32_bits(addr);59 sge->len = len;60}61 62/**63 * hinic_sge_to_dma - get dma address from scatter gather entry64 * @sge: scatter gather entry65 *66 * Return dma address of sg entry67 **/68dma_addr_t hinic_sge_to_dma(struct hinic_sge *sge)69{70 return (dma_addr_t)((((u64)sge->hi_addr) << 32) | sge->lo_addr);71}72