1 files changed, 71 insertions, 0 deletions
diff --git a/drivers/net/ethernet/huawei/hinic/hinic_common.c b/drivers/net/ethernet/huawei/hinic/hinic_common.c
new file mode 100644
index 000000000..8e9b4a6c8
--- /dev/null
+++ b/drivers/net/ethernet/huawei/hinic/hinic_common.c
@@ -0,0 +1,71 @@
+// 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);
+}