// SPDX-License-Identifier: GPL-2.0-only /* * Huawei HiNIC PCI Express Linux driver * Copyright(c) 2017 Huawei Technologies Co., Ltd */ #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); }