net: hns3: Add HNS3 VF IMP(Integrated Management Proc) cmd interface

This patch adds support of command interface for communication with
the IMP(Integrated Management Processor) for HNS3 Virtual Function
Driver.

Each VF has support of CQP(Command Queue Pair) ring interface.
Each CQP consis of send queue CSQ and receive queue CRQ.
There are various commands a VF may support, like to query frimware
version, TQP management, statistics, interrupt related, mailbox etc.

This also contains code to initialize the command queue, manage the
command queue descriptors and Rx/Tx protocol with the command processor
in the form of various commands/results and acknowledgements.
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: lipeng <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_cmd.c

+// SPDX-License-Identifier: GPL-2.0+
+// Copyright (c) 2016-2017 Hisilicon Limited.
+
+#include <linux/device.h>
+#include <linux/dma-direction.h>
+#include <linux/dma-mapping.h>
+#include <linux/err.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include "hclgevf_cmd.h"
+#include "hclgevf_main.h"
+#include "hnae3.h"
+
+#define hclgevf_is_csq(ring) ((ring)->flag & HCLGEVF_TYPE_CSQ)
+#define hclgevf_ring_to_dma_dir(ring) (hclgevf_is_csq(ring) ? \
+					DMA_TO_DEVICE : DMA_FROM_DEVICE)
+#define cmq_ring_to_dev(ring)   (&(ring)->dev->pdev->dev)
+
+static int hclgevf_ring_space(struct hclgevf_cmq_ring *ring)
+{
+	int ntc = ring->next_to_clean;
+	int ntu = ring->next_to_use;
+	int used;
+
+	used = (ntu - ntc + ring->desc_num) % ring->desc_num;
+
+	return ring->desc_num - used - 1;
+}
+
+static int hclgevf_cmd_csq_clean(struct hclgevf_hw *hw)
+{
+	struct hclgevf_cmq_ring *csq = &hw->cmq.csq;
+	u16 ntc = csq->next_to_clean;
+	struct hclgevf_desc *desc;
+	int clean = 0;
+	u32 head;
+
+	desc = &csq->desc[ntc];
+	head = hclgevf_read_dev(hw, HCLGEVF_NIC_CSQ_HEAD_REG);
+	while (head != ntc) {
+		memset(desc, 0, sizeof(*desc));
+		ntc++;
+		if (ntc == csq->desc_num)
+			ntc = 0;
+		desc = &csq->desc[ntc];
+		clean++;
+	}
+	csq->next_to_clean = ntc;
+
+	return clean;
+}
+
+static bool hclgevf_cmd_csq_done(struct hclgevf_hw *hw)
+{
+	u32 head;
+
+	head = hclgevf_read_dev(hw, HCLGEVF_NIC_CSQ_HEAD_REG);
+
+	return head == hw->cmq.csq.next_to_use;
+}
+
+static bool hclgevf_is_special_opcode(u16 opcode)
+{
+	u16 spec_opcode[] = {0x30, 0x31, 0x32};
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(spec_opcode); i++) {
+		if (spec_opcode[i] == opcode)
+			return true;
+	}
+
+	return false;
+}
+
+static int hclgevf_alloc_cmd_desc(struct hclgevf_cmq_ring *ring)
+{
+	int size = ring->desc_num * sizeof(struct hclgevf_desc);
+
+	ring->desc = kzalloc(size, GFP_KERNEL);
+	if (!ring->desc)
+		return -ENOMEM;
+
+	ring->desc_dma_addr = dma_map_single(cmq_ring_to_dev(ring), ring->desc,
+					     size, DMA_BIDIRECTIONAL);
+
+	if (dma_mapping_error(cmq_ring_to_dev(ring), ring->desc_dma_addr)) {
+		ring->desc_dma_addr = 0;
+		kfree(ring->desc);
+		ring->desc = NULL;
+		return -ENOMEM;
+	}
+
+	return 0;
+}
+
+static void hclgevf_free_cmd_desc(struct hclgevf_cmq_ring *ring)
+{
+	dma_unmap_single(cmq_ring_to_dev(ring), ring->desc_dma_addr,
+			 ring->desc_num * sizeof(ring->desc[0]),
+			 hclgevf_ring_to_dma_dir(ring));
+
+	ring->desc_dma_addr = 0;
+	kfree(ring->desc);
+	ring->desc = NULL;
+}
+
+static int hclgevf_init_cmd_queue(struct hclgevf_dev *hdev,
+				  struct hclgevf_cmq_ring *ring)
+{
+	struct hclgevf_hw *hw = &hdev->hw;
+	int ring_type = ring->flag;
+	u32 reg_val;
+	int ret;
+
+	ring->desc_num = HCLGEVF_NIC_CMQ_DESC_NUM;
+	spin_lock_init(&ring->lock);
+	ring->next_to_clean = 0;
+	ring->next_to_use = 0;
+	ring->dev = hdev;
+
+	/* allocate CSQ/CRQ descriptor */
+	ret = hclgevf_alloc_cmd_desc(ring);
+	if (ret) {
+		dev_err(&hdev->pdev->dev, "failed(%d) to alloc %s desc\n", ret,
+			(ring_type == HCLGEVF_TYPE_CSQ) ? "CSQ" : "CRQ");
+		return ret;
+	}
+
+	/* initialize the hardware registers with csq/crq dma-address,
+	 * descriptor number, head & tail pointers
+	 */
+	switch (ring_type) {
+	case HCLGEVF_TYPE_CSQ:
+		reg_val = (u32)ring->desc_dma_addr;
+		hclgevf_write_dev(hw, HCLGEVF_NIC_CSQ_BASEADDR_L_REG, reg_val);
+		reg_val = (u32)((ring->desc_dma_addr >> 31) >> 1);
+		hclgevf_write_dev(hw, HCLGEVF_NIC_CSQ_BASEADDR_H_REG, reg_val);
+
+		reg_val = (ring->desc_num >> HCLGEVF_NIC_CMQ_DESC_NUM_S);
+		reg_val |= HCLGEVF_NIC_CMQ_ENABLE;
+		hclgevf_write_dev(hw, HCLGEVF_NIC_CSQ_DEPTH_REG, reg_val);
+
+		hclgevf_write_dev(hw, HCLGEVF_NIC_CSQ_TAIL_REG, 0);
+		hclgevf_write_dev(hw, HCLGEVF_NIC_CSQ_HEAD_REG, 0);
+		break;
+	case HCLGEVF_TYPE_CRQ:
+		reg_val = (u32)ring->desc_dma_addr;
+		hclgevf_write_dev(hw, HCLGEVF_NIC_CRQ_BASEADDR_L_REG, reg_val);
+		reg_val = (u32)((ring->desc_dma_addr >> 31) >> 1);
+		hclgevf_write_dev(hw, HCLGEVF_NIC_CRQ_BASEADDR_H_REG, reg_val);
+
+		reg_val = (ring->desc_num >> HCLGEVF_NIC_CMQ_DESC_NUM_S);
+		reg_val |= HCLGEVF_NIC_CMQ_ENABLE;
+		hclgevf_write_dev(hw, HCLGEVF_NIC_CRQ_DEPTH_REG, reg_val);
+
+		hclgevf_write_dev(hw, HCLGEVF_NIC_CRQ_TAIL_REG, 0);
+		hclgevf_write_dev(hw, HCLGEVF_NIC_CRQ_HEAD_REG, 0);
+		break;
+	}
+
+	return 0;
+}
+
+void hclgevf_cmd_setup_basic_desc(struct hclgevf_desc *desc,
+				  enum hclgevf_opcode_type opcode, bool is_read)
+{
+	memset(desc, 0, sizeof(struct hclgevf_desc));
+	desc->opcode = cpu_to_le16(opcode);
+	desc->flag = cpu_to_le16(HCLGEVF_CMD_FLAG_NO_INTR |
+				 HCLGEVF_CMD_FLAG_IN);
+	if (is_read)
+		desc->flag |= cpu_to_le16(HCLGEVF_CMD_FLAG_WR);
+	else
+		desc->flag &= cpu_to_le16(~HCLGEVF_CMD_FLAG_WR);
+}
+
+/* hclgevf_cmd_send - send command to command queue
+ * @hw: pointer to the hw struct
+ * @desc: prefilled descriptor for describing the command
+ * @num : the number of descriptors to be sent
+ *
+ * This is the main send command for command queue, it
+ * sends the queue, cleans the queue, etc
+ */
+int hclgevf_cmd_send(struct hclgevf_hw *hw, struct hclgevf_desc *desc, int num)
+{
+	struct hclgevf_dev *hdev = (struct hclgevf_dev *)hw->hdev;
+	struct hclgevf_desc *desc_to_use;
+	bool complete = false;
+	u32 timeout = 0;
+	int handle = 0;
+	int status = 0;
+	u16 retval;
+	u16 opcode;
+	int ntc;
+
+	spin_lock_bh(&hw->cmq.csq.lock);
+
+	if (num > hclgevf_ring_space(&hw->cmq.csq)) {
+		spin_unlock_bh(&hw->cmq.csq.lock);
+		return -EBUSY;
+	}
+
+	/* Record the location of desc in the ring for this time
+	 * which will be use for hardware to write back
+	 */
+	ntc = hw->cmq.csq.next_to_use;
+	opcode = le16_to_cpu(desc[0].opcode);
+	while (handle < num) {
+		desc_to_use = &hw->cmq.csq.desc[hw->cmq.csq.next_to_use];
+		*desc_to_use = desc[handle];
+		(hw->cmq.csq.next_to_use)++;
+		if (hw->cmq.csq.next_to_use == hw->cmq.csq.desc_num)
+			hw->cmq.csq.next_to_use = 0;
+		handle++;
+	}
+
+	/* Write to hardware */
+	hclgevf_write_dev(hw, HCLGEVF_NIC_CSQ_TAIL_REG,
+			  hw->cmq.csq.next_to_use);
+
+	/* If the command is sync, wait for the firmware to write back,
+	 * if multi descriptors to be sent, use the first one to check
+	 */
+	if (HCLGEVF_SEND_SYNC(le16_to_cpu(desc->flag))) {
+		do {
+			if (hclgevf_cmd_csq_done(hw))
+				break;
+			udelay(1);
+			timeout++;
+		} while (timeout < hw->cmq.tx_timeout);
+	}
+
+	if (hclgevf_cmd_csq_done(hw)) {
+		complete = true;
+		handle = 0;
+
+		while (handle < num) {
+			/* Get the result of hardware write back */
+			desc_to_use = &hw->cmq.csq.desc[ntc];
+			desc[handle] = *desc_to_use;
+
+			if (likely(!hclgevf_is_special_opcode(opcode)))
+				retval = le16_to_cpu(desc[handle].retval);
+			else
+				retval = le16_to_cpu(desc[0].retval);
+
+			if ((enum hclgevf_cmd_return_status)retval ==
+			    HCLGEVF_CMD_EXEC_SUCCESS)
+				status = 0;
+			else
+				status = -EIO;
+			hw->cmq.last_status = (enum hclgevf_cmd_status)retval;
+			ntc++;
+			handle++;
+			if (ntc == hw->cmq.csq.desc_num)
+				ntc = 0;
+		}
+	}
+
+	if (!complete)
+		status = -EAGAIN;
+
+	/* Clean the command send queue */
+	handle = hclgevf_cmd_csq_clean(hw);
+	if (handle != num) {
+		dev_warn(&hdev->pdev->dev,
+			 "cleaned %d, need to clean %d\n", handle, num);
+	}
+
+	spin_unlock_bh(&hw->cmq.csq.lock);
+
+	return status;
+}
+
+static int  hclgevf_cmd_query_firmware_version(struct hclgevf_hw *hw,
+					       u32 *version)
+{
+	struct hclgevf_query_version_cmd *resp;
+	struct hclgevf_desc desc;
+	int status;
+
+	resp = (struct hclgevf_query_version_cmd *)desc.data;
+
+	hclgevf_cmd_setup_basic_desc(&desc, HCLGEVF_OPC_QUERY_FW_VER, 1);
+	status = hclgevf_cmd_send(hw, &desc, 1);
+	if (!status)
+		*version = le32_to_cpu(resp->firmware);
+
+	return status;
+}
+
+int hclgevf_cmd_init(struct hclgevf_dev *hdev)
+{
+	u32 version;
+	int ret;
+
+	/* setup Tx write back timeout */
+	hdev->hw.cmq.tx_timeout = HCLGEVF_CMDQ_TX_TIMEOUT;
+
+	/* setup queue CSQ/CRQ rings */
+	hdev->hw.cmq.csq.flag = HCLGEVF_TYPE_CSQ;
+	ret = hclgevf_init_cmd_queue(hdev, &hdev->hw.cmq.csq);
+	if (ret) {
+		dev_err(&hdev->pdev->dev,
+			"failed(%d) to initialize CSQ ring\n", ret);
+		return ret;
+	}
+
+	hdev->hw.cmq.crq.flag = HCLGEVF_TYPE_CRQ;
+	ret = hclgevf_init_cmd_queue(hdev, &hdev->hw.cmq.crq);
+	if (ret) {
+		dev_err(&hdev->pdev->dev,
+			"failed(%d) to initialize CRQ ring\n", ret);
+		goto err_csq;
+	}
+
+	/* get firmware version */
+	ret = hclgevf_cmd_query_firmware_version(&hdev->hw, &version);
+	if (ret) {
+		dev_err(&hdev->pdev->dev,
+			"failed(%d) to query firmware version\n", ret);
+		goto err_crq;
+	}
+	hdev->fw_version = version;
+
+	dev_info(&hdev->pdev->dev, "The firmware version is %08x\n", version);
+
+	return 0;
+err_crq:
+	hclgevf_free_cmd_desc(&hdev->hw.cmq.crq);
+err_csq:
+	hclgevf_free_cmd_desc(&hdev->hw.cmq.csq);
+
+	return ret;
+}
+
+void hclgevf_cmd_uninit(struct hclgevf_dev *hdev)
+{
+	hclgevf_free_cmd_desc(&hdev->hw.cmq.csq);
+	hclgevf_free_cmd_desc(&hdev->hw.cmq.crq);
+}

drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_cmd.h

+/* SPDX-License-Identifier: GPL-2.0+ */
+/* Copyright (c) 2016-2017 Hisilicon Limited. */
+
+#ifndef __HCLGEVF_CMD_H
+#define __HCLGEVF_CMD_H
+#include <linux/io.h>
+#include <linux/types.h>
+#include "hnae3.h"
+
+#define HCLGEVF_CMDQ_TX_TIMEOUT		200
+#define HCLGEVF_CMDQ_RX_INVLD_B		0
+#define HCLGEVF_CMDQ_RX_OUTVLD_B	1
+
+struct hclgevf_hw;
+struct hclgevf_dev;
+
+struct hclgevf_desc {
+	__le16 opcode;
+	__le16 flag;
+	__le16 retval;
+	__le16 rsv;
+	__le32 data[6];
+};
+
+struct hclgevf_desc_cb {
+	dma_addr_t dma;
+	void *va;
+	u32 length;
+};
+
+struct hclgevf_cmq_ring {
+	dma_addr_t desc_dma_addr;
+	struct hclgevf_desc *desc;
+	struct hclgevf_desc_cb *desc_cb;
+	struct hclgevf_dev  *dev;
+	u32 head;
+	u32 tail;
+
+	u16 buf_size;
+	u16 desc_num;
+	int next_to_use;
+	int next_to_clean;
+	u8 flag;
+	spinlock_t lock; /* Command queue lock */
+};
+
+enum hclgevf_cmd_return_status {
+	HCLGEVF_CMD_EXEC_SUCCESS	= 0,
+	HCLGEVF_CMD_NO_AUTH	= 1,
+	HCLGEVF_CMD_NOT_EXEC	= 2,
+	HCLGEVF_CMD_QUEUE_FULL	= 3,
+};
+
+enum hclgevf_cmd_status {
+	HCLGEVF_STATUS_SUCCESS	= 0,
+	HCLGEVF_ERR_CSQ_FULL	= -1,
+	HCLGEVF_ERR_CSQ_TIMEOUT	= -2,
+	HCLGEVF_ERR_CSQ_ERROR	= -3
+};
+
+struct hclgevf_cmq {
+	struct hclgevf_cmq_ring csq;
+	struct hclgevf_cmq_ring crq;
+	u16 tx_timeout; /* Tx timeout */
+	enum hclgevf_cmd_status last_status;
+};
+
+#define HCLGEVF_CMD_FLAG_IN_VALID_SHIFT		0
+#define HCLGEVF_CMD_FLAG_OUT_VALID_SHIFT	1
+#define HCLGEVF_CMD_FLAG_NEXT_SHIFT		2
+#define HCLGEVF_CMD_FLAG_WR_OR_RD_SHIFT		3
+#define HCLGEVF_CMD_FLAG_NO_INTR_SHIFT		4
+#define HCLGEVF_CMD_FLAG_ERR_INTR_SHIFT		5
+
+#define HCLGEVF_CMD_FLAG_IN		BIT(HCLGEVF_CMD_FLAG_IN_VALID_SHIFT)
+#define HCLGEVF_CMD_FLAG_OUT		BIT(HCLGEVF_CMD_FLAG_OUT_VALID_SHIFT)
+#define HCLGEVF_CMD_FLAG_NEXT		BIT(HCLGEVF_CMD_FLAG_NEXT_SHIFT)
+#define HCLGEVF_CMD_FLAG_WR		BIT(HCLGEVF_CMD_FLAG_WR_OR_RD_SHIFT)
+#define HCLGEVF_CMD_FLAG_NO_INTR	BIT(HCLGEVF_CMD_FLAG_NO_INTR_SHIFT)
+#define HCLGEVF_CMD_FLAG_ERR_INTR	BIT(HCLGEVF_CMD_FLAG_ERR_INTR_SHIFT)
+
+enum hclgevf_opcode_type {
+	/* Generic command */
+	HCLGEVF_OPC_QUERY_FW_VER	= 0x0001,
+	/* TQP command */
+	HCLGEVF_OPC_QUERY_TX_STATUS	= 0x0B03,
+	HCLGEVF_OPC_QUERY_RX_STATUS	= 0x0B13,
+	HCLGEVF_OPC_CFG_COM_TQP_QUEUE	= 0x0B20,
+	/* TSO cmd */
+	HCLGEVF_OPC_TSO_GENERIC_CONFIG	= 0x0C01,
+	/* RSS cmd */
+	HCLGEVF_OPC_RSS_GENERIC_CONFIG	= 0x0D01,
+	HCLGEVF_OPC_RSS_INDIR_TABLE	= 0x0D07,
+	HCLGEVF_OPC_RSS_TC_MODE		= 0x0D08,
+	/* Mailbox cmd */
+	HCLGEVF_OPC_MBX_VF_TO_PF	= 0x2001,
+};
+
+#define HCLGEVF_TQP_REG_OFFSET		0x80000
+#define HCLGEVF_TQP_REG_SIZE		0x200
+
+struct hclgevf_tqp_map {
+	__le16 tqp_id;	/* Absolute tqp id for in this pf */
+	u8 tqp_vf; /* VF id */
+#define HCLGEVF_TQP_MAP_TYPE_PF		0
+#define HCLGEVF_TQP_MAP_TYPE_VF		1
+#define HCLGEVF_TQP_MAP_TYPE_B		0
+#define HCLGEVF_TQP_MAP_EN_B		1
+	u8 tqp_flag;	/* Indicate it's pf or vf tqp */
+	__le16 tqp_vid; /* Virtual id in this pf/vf */
+	u8 rsv[18];
+};
+
+#define HCLGEVF_VECTOR_ELEMENTS_PER_CMD	10
+
+enum hclgevf_int_type {
+	HCLGEVF_INT_TX = 0,
+	HCLGEVF_INT_RX,
+	HCLGEVF_INT_EVENT,
+};
+
+struct hclgevf_ctrl_vector_chain {
+	u8 int_vector_id;
+	u8 int_cause_num;
+#define HCLGEVF_INT_TYPE_S	0
+#define HCLGEVF_INT_TYPE_M	0x3
+#define HCLGEVF_TQP_ID_S	2
+#define HCLGEVF_TQP_ID_M	(0x3fff << HCLGEVF_TQP_ID_S)
+	__le16 tqp_type_and_id[HCLGEVF_VECTOR_ELEMENTS_PER_CMD];
+	u8 vfid;
+	u8 resv;
+};
+
+struct hclgevf_query_version_cmd {
+	__le32 firmware;
+	__le32 firmware_rsv[5];
+};
+
+#define HCLGEVF_RSS_HASH_KEY_OFFSET	4
+#define HCLGEVF_RSS_HASH_KEY_NUM	16
+struct hclgevf_rss_config_cmd {
+	u8 hash_config;
+	u8 rsv[7];
+	u8 hash_key[HCLGEVF_RSS_HASH_KEY_NUM];
+};
+
+struct hclgevf_rss_input_tuple_cmd {
+	u8 ipv4_tcp_en;
+	u8 ipv4_udp_en;
+	u8 ipv4_stcp_en;
+	u8 ipv4_fragment_en;
+	u8 ipv6_tcp_en;
+	u8 ipv6_udp_en;
+	u8 ipv6_stcp_en;
+	u8 ipv6_fragment_en;
+	u8 rsv[16];
+};
+
+#define HCLGEVF_RSS_CFG_TBL_SIZE	16
+
+struct hclgevf_rss_indirection_table_cmd {
+	u16 start_table_index;
+	u16 rss_set_bitmap;
+	u8 rsv[4];
+	u8 rss_result[HCLGEVF_RSS_CFG_TBL_SIZE];
+};
+
+#define HCLGEVF_RSS_TC_OFFSET_S		0
+#define HCLGEVF_RSS_TC_OFFSET_M		(0x3ff << HCLGEVF_RSS_TC_OFFSET_S)
+#define HCLGEVF_RSS_TC_SIZE_S		12
+#define HCLGEVF_RSS_TC_SIZE_M		(0x7 << HCLGEVF_RSS_TC_SIZE_S)
+#define HCLGEVF_RSS_TC_VALID_B		15
+#define HCLGEVF_MAX_TC_NUM		8
+struct hclgevf_rss_tc_mode_cmd {
+	u16 rss_tc_mode[HCLGEVF_MAX_TC_NUM];
+	u8 rsv[8];
+};
+
+#define HCLGEVF_LINK_STS_B	0
+#define HCLGEVF_LINK_STATUS	BIT(HCLGEVF_LINK_STS_B)
+struct hclgevf_link_status_cmd {
+	u8 status;
+	u8 rsv[23];
+};
+
+#define HCLGEVF_RING_ID_MASK	0x3ff
+#define HCLGEVF_TQP_ENABLE_B	0
+
+struct hclgevf_cfg_com_tqp_queue_cmd {
+	__le16 tqp_id;
+	__le16 stream_id;
+	u8 enable;
+	u8 rsv[19];
+};
+
+struct hclgevf_cfg_tx_queue_pointer_cmd {
+	__le16 tqp_id;
+	__le16 tx_tail;
+	__le16 tx_head;
+	__le16 fbd_num;
+	__le16 ring_offset;
+	u8 rsv[14];
+};
+
+#define HCLGEVF_TSO_ENABLE_B	0
+struct hclgevf_cfg_tso_status_cmd {
+	u8 tso_enable;
+	u8 rsv[23];
+};
+
+#define HCLGEVF_TYPE_CRQ		0
+#define HCLGEVF_TYPE_CSQ		1
+#define HCLGEVF_NIC_CSQ_BASEADDR_L_REG	0x27000
+#define HCLGEVF_NIC_CSQ_BASEADDR_H_REG	0x27004
+#define HCLGEVF_NIC_CSQ_DEPTH_REG	0x27008
+#define HCLGEVF_NIC_CSQ_TAIL_REG	0x27010
+#define HCLGEVF_NIC_CSQ_HEAD_REG	0x27014
+#define HCLGEVF_NIC_CRQ_BASEADDR_L_REG	0x27018
+#define HCLGEVF_NIC_CRQ_BASEADDR_H_REG	0x2701c
+#define HCLGEVF_NIC_CRQ_DEPTH_REG	0x27020
+#define HCLGEVF_NIC_CRQ_TAIL_REG	0x27024
+#define HCLGEVF_NIC_CRQ_HEAD_REG	0x27028
+#define HCLGEVF_NIC_CMQ_EN_B		16
+#define HCLGEVF_NIC_CMQ_ENABLE		BIT(HCLGEVF_NIC_CMQ_EN_B)
+#define HCLGEVF_NIC_CMQ_DESC_NUM	1024
+#define HCLGEVF_NIC_CMQ_DESC_NUM_S	3
+#define HCLGEVF_NIC_CMDQ_INT_SRC_REG	0x27100
+
+static inline void hclgevf_write_reg(void __iomem *base, u32 reg, u32 value)
+{
+	writel(value, base + reg);
+}
+
+static inline u32 hclgevf_read_reg(u8 __iomem *base, u32 reg)
+{
+	u8 __iomem *reg_addr = READ_ONCE(base);
+
+	return readl(reg_addr + reg);
+}
+
+#define hclgevf_write_dev(a, reg, value) \
+	hclgevf_write_reg((a)->io_base, (reg), (value))
+#define hclgevf_read_dev(a, reg) \
+	hclgevf_read_reg((a)->io_base, (reg))
+
+#define HCLGEVF_SEND_SYNC(flag) \
+	((flag) & HCLGEVF_CMD_FLAG_NO_INTR)
+
+int hclgevf_cmd_init(struct hclgevf_dev *hdev);
+void hclgevf_cmd_uninit(struct hclgevf_dev *hdev);
+
+int hclgevf_cmd_send(struct hclgevf_hw *hw, struct hclgevf_desc *desc, int num);
+void hclgevf_cmd_setup_basic_desc(struct hclgevf_desc *desc,
+				  enum hclgevf_opcode_type opcode,
+				  bool is_read);
+#endif