net: hns3: create new cmdq hardware description structure hclge_comm_hw

Currently PF and VF cmdq APIs use struct hclge(vf)_hw to describe cmdq
hardware information needed by hclge(vf)_cmd_send. There are a little
differences between its child struct hclge_cmq_ring and hclgevf_cmq_ring.
It is redundent to use two sets of structures to support same functions.

So this patch creates new set of common cmdq hardware description
structures(hclge_comm_hw) to unify PF and VF cmdq functions. The struct
hclge_desc is still kept to avoid too many meaningless replacement.

These new structures will be used to unify hclge(vf)_hw structures in PF
and VF cmdq APIs in next patches.

Signed-off-by: Jie Wang <wangjie125@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 55 insertions, 0 deletions

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_common/hclge_comm_cmd.h b/drivers/net/ethernet/hisilicon/hns3/hns3_common/hclge_comm_cmd.h
new file mode 100644
index 000000000000..f1e39003ceeb
--- /dev/null
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_common/hclge_comm_cmd.h
@@ -0,0 +1,55 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+// Copyright (c) 2021-2021 Hisilicon Limited.
+
+#ifndef __HCLGE_COMM_CMD_H
+#define __HCLGE_COMM_CMD_H
+#include <linux/types.h>
+
+#include "hnae3.h"
+
+#define HCLGE_DESC_DATA_LEN		6
+struct hclge_desc {
+	__le16 opcode;
+	__le16 flag;
+	__le16 retval;
+	__le16 rsv;
+	__le32 data[HCLGE_DESC_DATA_LEN];
+};
+
+struct hclge_comm_cmq_ring {
+	dma_addr_t desc_dma_addr;
+	struct hclge_desc *desc;
+	struct pci_dev *pdev;
+	u32 head;
+	u32 tail;
+
+	u16 buf_size;
+	u16 desc_num;
+	int next_to_use;
+	int next_to_clean;
+	u8 ring_type; /* cmq ring type */
+	spinlock_t lock; /* Command queue lock */
+};
+
+enum hclge_comm_cmd_status {
+	HCLGE_COMM_STATUS_SUCCESS	= 0,
+	HCLGE_COMM_ERR_CSQ_FULL		= -1,
+	HCLGE_COMM_ERR_CSQ_TIMEOUT	= -2,
+	HCLGE_COMM_ERR_CSQ_ERROR	= -3,
+};
+
+struct hclge_comm_cmq {
+	struct hclge_comm_cmq_ring csq;
+	struct hclge_comm_cmq_ring crq;
+	u16 tx_timeout;
+	enum hclge_comm_cmd_status last_status;
+};
+
+struct hclge_comm_hw {
+	void __iomem *io_base;
+	void __iomem *mem_base;
+	struct hclge_comm_cmq cmq;
+	unsigned long comm_state;
+};
+
+#endif