[dpdk-dev] [PATCH v5 06/15] net/hinic/base: add mgmt module function code

[Ziyang Xuan <xuanziyang2@huawei.com>]

Mgmt module is a kinkd of administration module for the chip.
It is responsible for handling administration command from host.
It uses api channel. This patch adds related data structures,
packaged interfaces and function codes.

Signed-off-by: Ziyang Xuan <xuanziyang2@huawei.com>
---
 drivers/net/hinic/base/hinic_pmd_mgmt.c | 773 ++++++++++++++++++++++++
 drivers/net/hinic/base/hinic_pmd_mgmt.h | 119 ++++
 2 files changed, 892 insertions(+)
 create mode 100644 drivers/net/hinic/base/hinic_pmd_mgmt.c
 create mode 100644 drivers/net/hinic/base/hinic_pmd_mgmt.h

diff --git a/drivers/net/hinic/base/hinic_pmd_mgmt.c b/drivers/net/hinic/base/hinic_pmd_mgmt.c
new file mode 100644
index 000000000..bc18765ff
--- /dev/null
+++ b/drivers/net/hinic/base/hinic_pmd_mgmt.c
@@ -0,0 +1,773 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2017 Huawei Technologies Co., Ltd
+ */
+
+#include "hinic_compat.h"
+#include "hinic_csr.h"
+#include "hinic_pmd_hwdev.h"
+#include "hinic_pmd_hwif.h"
+#include "hinic_pmd_mgmt.h"
+
+#define BUF_OUT_DEFAULT_SIZE		1
+
+#define MAX_PF_MGMT_BUF_SIZE		2048UL
+
+#define MGMT_MSG_SIZE_MIN		20
+#define MGMT_MSG_SIZE_STEP		16
+#define	MGMT_MSG_RSVD_FOR_DEV		8
+
+#define MGMT_MSG_TIMEOUT		5000	/* millisecond */
+
+#define SYNC_MSG_ID_MASK		0x1FF
+#define ASYNC_MSG_ID_MASK		0x1FF
+#define ASYNC_MSG_FLAG			0x200
+
+#define MSG_NO_RESP			0xFFFF
+
+#define MAX_MSG_SZ			2016
+
+#define MSG_SZ_IS_VALID(in_size)	((in_size) <= MAX_MSG_SZ)
+
+#define SYNC_MSG_ID(pf_to_mgmt)		((pf_to_mgmt)->sync_msg_id)
+
+#define SYNC_MSG_ID_INC(pf_to_mgmt)	(SYNC_MSG_ID(pf_to_mgmt) = \
+			(SYNC_MSG_ID(pf_to_mgmt) + 1) & SYNC_MSG_ID_MASK)
+
+#define ASYNC_MSG_ID(pf_to_mgmt)	((pf_to_mgmt)->async_msg_id)
+
+#define ASYNC_MSG_ID_INC(pf_to_mgmt)	(ASYNC_MSG_ID(pf_to_mgmt) = \
+			((ASYNC_MSG_ID(pf_to_mgmt) + 1) & ASYNC_MSG_ID_MASK) \
+			| ASYNC_MSG_FLAG)
+
+#define HINIC_SEQ_ID_MAX_VAL		42
+#define HINIC_MSG_SEG_LEN		48
+
+#define GET_CURR_AEQ_ELEM(eq)		GET_AEQ_ELEM((eq), (eq)->cons_idx)
+
+#define EQ_ELEM_DESC_TYPE_SHIFT			0
+#define EQ_ELEM_DESC_SRC_SHIFT			7
+#define EQ_ELEM_DESC_SIZE_SHIFT			8
+#define EQ_ELEM_DESC_WRAPPED_SHIFT		31
+
+#define EQ_ELEM_DESC_TYPE_MASK			0x7FU
+#define EQ_ELEM_DESC_SRC_MASK			0x1U
+#define EQ_ELEM_DESC_SIZE_MASK			0xFFU
+#define EQ_ELEM_DESC_WRAPPED_MASK		0x1U
+
+#define EQ_MSIX_RESEND_TIMER_CLEAR		1
+
+#define EQ_ELEM_DESC_GET(val, member)		\
+				(((val) >> EQ_ELEM_DESC_##member##_SHIFT) & \
+				EQ_ELEM_DESC_##member##_MASK)
+
+#define HINIC_MGMT_CHANNEL_STATUS_SHIFT		0x0
+#define HINIC_MGMT_CHANNEL_STATUS_MASK		0x1
+
+#define HINIC_GET_MGMT_CHANNEL_STATUS(val, member)	\
+	(((val) >> HINIC_##member##_SHIFT) & HINIC_##member##_MASK)
+
+#define HINIC_MSG_TO_MGMT_MAX_LEN		2016
+
+/**
+ * mgmt_msg_len - calculate the total message length
+ * @msg_data_len: the length of the message data
+ * Return: the total message length
+ **/
+static u16 mgmt_msg_len(u16 msg_data_len)
+{
+	/* u64 - the size of the header */
+	u16 msg_size = (u16)(MGMT_MSG_RSVD_FOR_DEV + sizeof(u64) +
+			     msg_data_len);
+
+	if (msg_size > MGMT_MSG_SIZE_MIN)
+		msg_size = MGMT_MSG_SIZE_MIN +
+			ALIGN((msg_size - MGMT_MSG_SIZE_MIN),
+			      MGMT_MSG_SIZE_STEP);
+	else
+		msg_size = MGMT_MSG_SIZE_MIN;
+
+	return msg_size;
+}
+
+/**
+ * prepare_header - prepare the header of the message
+ * @pf_to_mgmt: PF to MGMT channel
+ * @header: pointer of the header to prepare
+ * @msg_len: the length of the message
+ * @mod: module in the chip that will get the message
+ * @ack_type: the type to response
+ * @direction: the direction of the original message
+ * @cmd: the command to do
+ * @msg_id: message id
+ **/
+static void prepare_header(struct hinic_msg_pf_to_mgmt *pf_to_mgmt,
+			   u64 *header, int msg_len, enum hinic_mod_type mod,
+			   enum hinic_msg_ack_type ack_type,
+			   enum hinic_msg_direction_type direction,
+			   u8 cmd, u32 msg_id)
+{
+	struct hinic_hwif *hwif = pf_to_mgmt->hwdev->hwif;
+
+	*header = HINIC_MSG_HEADER_SET(msg_len, MSG_LEN) |
+		HINIC_MSG_HEADER_SET(mod, MODULE) |
+		HINIC_MSG_HEADER_SET(msg_len, SEG_LEN) |
+		HINIC_MSG_HEADER_SET(ack_type, NO_ACK) |
+		HINIC_MSG_HEADER_SET(0, ASYNC_MGMT_TO_PF) |
+		HINIC_MSG_HEADER_SET(0, SEQID) |
+		HINIC_MSG_HEADER_SET(LAST_SEGMENT, LAST) |
+		HINIC_MSG_HEADER_SET(direction, DIRECTION) |
+		HINIC_MSG_HEADER_SET(cmd, CMD) |
+		HINIC_MSG_HEADER_SET(HINIC_PCI_INTF_IDX(hwif), PCI_INTF_IDX) |
+		HINIC_MSG_HEADER_SET(hwif->attr.port_to_port_idx, P2P_IDX) |
+		HINIC_MSG_HEADER_SET(msg_id, MSG_ID);
+}
+
+/**
+ * prepare_mgmt_cmd - prepare the mgmt command
+ * @mgmt_cmd: pointer to the command to prepare
+ * @header: pointer of the header to prepare
+ * @msg: the data of the message
+ * @msg_len: the length of the message
+ **/
+static void prepare_mgmt_cmd(u8 *mgmt_cmd, u64 *header, void *msg,
+			     int msg_len)
+{
+	u32 cmd_buf_max = MAX_PF_MGMT_BUF_SIZE;
+
+	memset(mgmt_cmd, 0, MGMT_MSG_RSVD_FOR_DEV);
+
+	mgmt_cmd += MGMT_MSG_RSVD_FOR_DEV;
+	cmd_buf_max -= MGMT_MSG_RSVD_FOR_DEV;
+	memcpy(mgmt_cmd, header, sizeof(*header));
+
+	mgmt_cmd += sizeof(*header);
+	cmd_buf_max -= sizeof(*header);
+	memcpy(mgmt_cmd, msg, msg_len);
+}
+
+/**
+ * alloc_recv_msg - allocate received message memory
+ * @recv_msg: pointer that will hold the allocated data
+ * Return: 0 - success, negative - failure
+ **/
+static int alloc_recv_msg(struct hinic_recv_msg *recv_msg)
+{
+	int err;
+
+	recv_msg->msg = kzalloc(MAX_PF_MGMT_BUF_SIZE, GFP_KERNEL);
+	if (!recv_msg->msg) {
+		PMD_DRV_LOG(ERR, "Allocate recv msg buf failed");
+		return -ENOMEM;
+	}
+
+	recv_msg->buf_out = kzalloc(MAX_PF_MGMT_BUF_SIZE, GFP_KERNEL);
+	if (!recv_msg->buf_out) {
+		PMD_DRV_LOG(ERR, "Allocate recv msg output buf failed");
+		err = -ENOMEM;
+		goto alloc_buf_out_err;
+	}
+
+	return 0;
+
+alloc_buf_out_err:
+	kfree(recv_msg->msg);
+	return err;
+}
+
+/**
+ * free_recv_msg - free received message memory
+ * @recv_msg: pointer that holds the allocated data
+ **/
+static void free_recv_msg(struct hinic_recv_msg *recv_msg)
+{
+	kfree(recv_msg->buf_out);
+	kfree(recv_msg->msg);
+}
+
+/**
+ * alloc_msg_buf - allocate all the message buffers of PF to MGMT channel
+ * @pf_to_mgmt: PF to MGMT channel
+ * Return: 0 - success, negative - failure
+ **/
+static int alloc_msg_buf(struct hinic_msg_pf_to_mgmt *pf_to_mgmt)
+{
+	int err;
+
+	err = alloc_recv_msg(&pf_to_mgmt->recv_msg_from_mgmt);
+	if (err) {
+		PMD_DRV_LOG(ERR, "Allocate recv msg failed");
+		return err;
+	}
+
+	err = alloc_recv_msg(&pf_to_mgmt->recv_resp_msg_from_mgmt);
+	if (err) {
+		PMD_DRV_LOG(ERR, "Allocate resp recv msg failed");
+		goto alloc_msg_for_resp_err;
+	}
+
+	pf_to_mgmt->async_msg_buf = kzalloc(MAX_PF_MGMT_BUF_SIZE, GFP_KERNEL);
+	if (!pf_to_mgmt->async_msg_buf)	{
+		PMD_DRV_LOG(ERR, "Allocate async msg buf failed");
+		err = -ENOMEM;
+		goto async_msg_buf_err;
+	}
+
+	pf_to_mgmt->sync_msg_buf = kzalloc(MAX_PF_MGMT_BUF_SIZE, GFP_KERNEL);
+	if (!pf_to_mgmt->sync_msg_buf)	{
+		PMD_DRV_LOG(ERR, "Allocate sync msg buf failed");
+		err = -ENOMEM;
+		goto sync_msg_buf_err;
+	}
+
+	return 0;
+
+sync_msg_buf_err:
+	kfree(pf_to_mgmt->async_msg_buf);
+
+async_msg_buf_err:
+	free_recv_msg(&pf_to_mgmt->recv_resp_msg_from_mgmt);
+
+alloc_msg_for_resp_err:
+	free_recv_msg(&pf_to_mgmt->recv_msg_from_mgmt);
+
+	return err;
+}
+
+/**
+ * free_msg_buf - free all the message buffers of PF to MGMT channel
+ * @pf_to_mgmt: PF to MGMT channel
+ * Return: 0 - success, negative - failure
+ **/
+static void free_msg_buf(struct hinic_msg_pf_to_mgmt *pf_to_mgmt)
+{
+	kfree(pf_to_mgmt->sync_msg_buf);
+	kfree(pf_to_mgmt->async_msg_buf);
+
+	free_recv_msg(&pf_to_mgmt->recv_resp_msg_from_mgmt);
+	free_recv_msg(&pf_to_mgmt->recv_msg_from_mgmt);
+}
+
+/**
+ * send_msg_to_mgmt_async - send async message
+ * @pf_to_mgmt: PF to MGMT channel
+ * @mod: module in the chip that will get the message
+ * @cmd: command of the message
+ * @msg: the data of the message
+ * @msg_len: the length of the message
+ * @direction: the direction of the original message
+ * @resp_msg_id: message id of response
+ * Return: 0 - success, negative - failure
+ **/
+static int send_msg_to_mgmt_async(struct hinic_msg_pf_to_mgmt *pf_to_mgmt,
+				  enum hinic_mod_type mod, u8 cmd,
+				  void *msg, u16 msg_len,
+				  enum hinic_msg_direction_type direction,
+				  u16 resp_msg_id)
+{
+	void *mgmt_cmd = pf_to_mgmt->async_msg_buf;
+	struct hinic_api_cmd_chain *chain;
+	u64 header;
+	u16 cmd_size = mgmt_msg_len(msg_len);
+
+	if (direction == HINIC_MSG_RESPONSE)
+		prepare_header(pf_to_mgmt, &header, msg_len, mod, HINIC_MSG_ACK,
+			       direction, cmd, resp_msg_id);
+	else
+		prepare_header(pf_to_mgmt, &header, msg_len, mod, HINIC_MSG_ACK,
+			       direction, cmd, ASYNC_MSG_ID(pf_to_mgmt));
+
+	prepare_mgmt_cmd((u8 *)mgmt_cmd, &header, msg, msg_len);
+
+	chain = pf_to_mgmt->cmd_chain[HINIC_API_CMD_WRITE_ASYNC_TO_MGMT_CPU];
+
+	return hinic_api_cmd_write(chain, HINIC_NODE_ID_MGMT_HOST, mgmt_cmd,
+				   cmd_size);
+}
+
+/**
+ * send_msg_to_mgmt_sync - send async message
+ * @pf_to_mgmt: PF to MGMT channel
+ * @mod: module in the chip that will get the message
+ * @cmd: command of the message
+ * @msg: the msg data
+ * @msg_len: the msg data length
+ * @ack_type: indicate mgmt command whether need ack or not
+ * @direction: the direction of the original message
+ * @resp_msg_id: msg id to response for
+ * Return: 0 - success, negative - failure
+ **/
+static int send_msg_to_mgmt_sync(struct hinic_msg_pf_to_mgmt *pf_to_mgmt,
+				 enum hinic_mod_type mod, u8 cmd,
+				 void *msg, u16 msg_len,
+				 enum hinic_msg_ack_type ack_type,
+				 enum hinic_msg_direction_type direction,
+				 __rte_unused u16 resp_msg_id)
+{
+	void *mgmt_cmd = pf_to_mgmt->sync_msg_buf;
+	struct hinic_api_cmd_chain *chain;
+	u64 header;
+	u16 cmd_size = mgmt_msg_len(msg_len);
+
+	if (direction == HINIC_MSG_RESPONSE)
+		prepare_header(pf_to_mgmt, &header, msg_len, mod, ack_type,
+			       direction, cmd, resp_msg_id);
+	else
+		prepare_header(pf_to_mgmt, &header, msg_len, mod, ack_type,
+			       direction, cmd, SYNC_MSG_ID(pf_to_mgmt));
+
+	prepare_mgmt_cmd((u8 *)mgmt_cmd, &header, msg, msg_len);
+
+	chain = pf_to_mgmt->cmd_chain[HINIC_API_CMD_PMD_WRITE_TO_MGMT];
+
+	return hinic_api_cmd_write(chain, HINIC_NODE_ID_MGMT_HOST,
+				   mgmt_cmd, cmd_size);
+}
+
+/**
+ * hinic_pf_to_mgmt_init - initialize PF to MGMT channel
+ * @hwdev: the pointer to the private hardware device object
+ * Return: 0 - success, negative - failure
+ **/
+static int hinic_pf_to_mgmt_init(struct hinic_hwdev *hwdev)
+{
+	struct hinic_msg_pf_to_mgmt *pf_to_mgmt;
+	int err;
+
+	pf_to_mgmt = kzalloc(sizeof(*pf_to_mgmt), GFP_KERNEL);
+	if (!pf_to_mgmt) {
+		PMD_DRV_LOG(ERR, "Allocate pf to mgmt mem failed");
+		return -ENOMEM;
+	}
+
+	hwdev->pf_to_mgmt = pf_to_mgmt;
+	pf_to_mgmt->hwdev = hwdev;
+
+	spin_lock_init(&pf_to_mgmt->async_msg_lock);
+	spin_lock_init(&pf_to_mgmt->sync_msg_lock);
+
+	err = alloc_msg_buf(pf_to_mgmt);
+	if (err) {
+		PMD_DRV_LOG(ERR, "Allocate msg buffers failed");
+		goto alloc_msg_buf_err;
+	}
+
+	err = hinic_api_cmd_init(hwdev, pf_to_mgmt->cmd_chain);
+	if (err) {
+		PMD_DRV_LOG(ERR, "Init the api cmd chains failed");
+		goto api_cmd_init_err;
+	}
+
+	return 0;
+
+api_cmd_init_err:
+	free_msg_buf(pf_to_mgmt);
+
+alloc_msg_buf_err:
+	kfree(pf_to_mgmt);
+
+	return err;
+}
+
+/**
+ * hinic_pf_to_mgmt_free - free PF to MGMT channel
+ * @hwdev: the pointer to the private hardware device object
+ **/
+static void hinic_pf_to_mgmt_free(struct hinic_hwdev *hwdev)
+{
+	struct hinic_msg_pf_to_mgmt *pf_to_mgmt = hwdev->pf_to_mgmt;
+
+	hinic_api_cmd_free(pf_to_mgmt->cmd_chain);
+	free_msg_buf(pf_to_mgmt);
+	kfree(pf_to_mgmt);
+}
+
+static int
+hinic_pf_to_mgmt_sync(struct hinic_hwdev *hwdev,
+		enum hinic_mod_type mod, u8 cmd, void *buf_in, u16 in_size,
+		void *buf_out, u16 *out_size, u32 timeout)
+{
+	struct hinic_msg_pf_to_mgmt *pf_to_mgmt = hwdev->pf_to_mgmt;
+	struct hinic_recv_msg *recv_msg;
+	u32 timeo;
+	int err, i;
+
+	spin_lock(&pf_to_mgmt->sync_msg_lock);
+
+	SYNC_MSG_ID_INC(pf_to_mgmt);
+	recv_msg = &pf_to_mgmt->recv_resp_msg_from_mgmt;
+
+	err = send_msg_to_mgmt_sync(pf_to_mgmt, mod, cmd, buf_in, in_size,
+				    HINIC_MSG_ACK, HINIC_MSG_DIRECT_SEND,
+				    MSG_NO_RESP);
+	if (err) {
+		PMD_DRV_LOG(ERR, "Send msg to mgmt failed");
+		goto unlock_sync_msg;
+	}
+
+	timeo = msecs_to_jiffies(timeout ? timeout : MGMT_MSG_TIMEOUT);
+	for (i = 0; i < pf_to_mgmt->rx_aeq->poll_retry_nr; i++) {
+		err = hinic_aeq_poll_msg(pf_to_mgmt->rx_aeq, timeo, NULL);
+		if (err) {
+			PMD_DRV_LOG(ERR, "Poll mgmt rsp timeout, mod=%d cmd=%d msg_id=%u rc=%d",
+				mod, cmd, pf_to_mgmt->sync_msg_id, err);
+			err = -ETIMEDOUT;
+			hinic_dump_aeq_info(hwdev);
+			goto unlock_sync_msg;
+		} else {
+			if (mod == recv_msg->mod && cmd == recv_msg->cmd &&
+			    recv_msg->msg_id == pf_to_mgmt->sync_msg_id) {
+				/* the expected response polled */
+				break;
+			}
+			PMD_DRV_LOG(ERR, "AEQ[%d] poll(mod=%d, cmd=%d, msg_id=%u) an "
+				"unexpected(mod=%d, cmd=%d, msg_id=%u) response",
+				pf_to_mgmt->rx_aeq->q_id, mod, cmd,
+				pf_to_mgmt->sync_msg_id, recv_msg->mod,
+				recv_msg->cmd, recv_msg->msg_id);
+		}
+	}
+
+	if (i == pf_to_mgmt->rx_aeq->poll_retry_nr) {
+		PMD_DRV_LOG(ERR, "Get %d unexpected mgmt rsp from AEQ[%d], poll mgmt rsp failed",
+			i, pf_to_mgmt->rx_aeq->q_id);
+		err = -EBADMSG;
+		goto unlock_sync_msg;
+	}
+
+	rte_smp_rmb();
+	if (recv_msg->msg_len && buf_out && out_size) {
+		if (recv_msg->msg_len <= *out_size) {
+			memcpy(buf_out, recv_msg->msg,
+			       recv_msg->msg_len);
+			*out_size = recv_msg->msg_len;
+		} else {
+			PMD_DRV_LOG(ERR, "Mgmt rsp's msg len:%u overflow.",
+				recv_msg->msg_len);
+			err = -ERANGE;
+		}
+	}
+
+unlock_sync_msg:
+	if (err && out_size)
+		*out_size = 0;
+	spin_unlock(&pf_to_mgmt->sync_msg_lock);
+	return err;
+}
+
+static int hinic_get_mgmt_channel_status(void *hwdev)
+{
+	struct hinic_hwif *hwif = ((struct hinic_hwdev *)hwdev)->hwif;
+	u32 val;
+
+	val = hinic_hwif_read_reg(hwif, HINIC_ICPL_RESERVD_ADDR);
+
+	return HINIC_GET_MGMT_CHANNEL_STATUS(val, MGMT_CHANNEL_STATUS);
+}
+
+int hinic_msg_to_mgmt_sync(void *hwdev, enum hinic_mod_type mod, u8 cmd,
+			   void *buf_in, u16 in_size,
+			   void *buf_out, u16 *out_size, u32 timeout)
+{
+	int rc = HINIC_ERROR;
+
+	if (!hwdev || in_size > HINIC_MSG_TO_MGMT_MAX_LEN)
+		return -EINVAL;
+
+	/* If status is hot upgrading, don't send message to mgmt */
+	if (hinic_get_mgmt_channel_status(hwdev))
+		return -EPERM;
+
+	rc = hinic_pf_to_mgmt_sync(hwdev, mod, cmd, buf_in,
+				   in_size, buf_out, out_size,
+				   timeout);
+
+	return rc;
+}
+
+int hinic_msg_to_mgmt_no_ack(void *hwdev, enum hinic_mod_type mod, u8 cmd,
+		     void *buf_in, u16 in_size, __rte_unused void *buf_out,
+		     __rte_unused u16 *out_size)
+{
+	struct hinic_msg_pf_to_mgmt *pf_to_mgmt =
+				((struct hinic_hwdev *)hwdev)->pf_to_mgmt;
+	int err = -EINVAL;
+
+	if (!MSG_SZ_IS_VALID(in_size)) {
+		PMD_DRV_LOG(ERR, "Mgmt msg buffer size is invalid");
+		return err;
+	}
+
+	spin_lock(&pf_to_mgmt->sync_msg_lock);
+
+	err = send_msg_to_mgmt_sync(pf_to_mgmt, mod, cmd, buf_in, in_size,
+				    HINIC_MSG_NO_ACK, HINIC_MSG_DIRECT_SEND,
+				    MSG_NO_RESP);
+
+	spin_unlock(&pf_to_mgmt->sync_msg_lock);
+
+	return err;
+}
+
+static bool check_mgmt_seq_id_and_seg_len(struct hinic_recv_msg *recv_msg,
+					  u8 seq_id, u8 seg_len)
+{
+	if (seq_id > HINIC_SEQ_ID_MAX_VAL || seg_len > HINIC_MSG_SEG_LEN)
+		return false;
+
+	if (seq_id == 0) {
+		recv_msg->sed_id = seq_id;
+	} else {
+		if (seq_id != recv_msg->sed_id + 1) {
+			recv_msg->sed_id = 0;
+			return false;
+		}
+		recv_msg->sed_id = seq_id;
+	}
+
+	return true;
+}
+
+/**
+ * hinic_mgmt_recv_msg_handler - handler for message from mgmt cpu
+ * @pf_to_mgmt: PF to MGMT channel
+ * @recv_msg: received message details
+ * @param: customized parameter
+ **/
+static void hinic_mgmt_recv_msg_handler(struct hinic_msg_pf_to_mgmt *pf_to_mgmt,
+					struct hinic_recv_msg *recv_msg,
+					void *param)
+{
+	void *buf_out = recv_msg->buf_out;
+	u16 out_size = 0;
+
+	switch (recv_msg->mod) {
+	case HINIC_MOD_COMM:
+		hinic_comm_async_event_handle(pf_to_mgmt->hwdev,
+					      recv_msg->cmd, recv_msg->msg,
+					      recv_msg->msg_len,
+					      buf_out, &out_size);
+		break;
+	case HINIC_MOD_L2NIC:
+		hinic_l2nic_async_event_handle(pf_to_mgmt->hwdev, param,
+					       recv_msg->cmd, recv_msg->msg,
+					       recv_msg->msg_len,
+					       buf_out, &out_size);
+		break;
+	case HINIC_MOD_HILINK:
+		hinic_hilink_async_event_handle(pf_to_mgmt->hwdev,
+						recv_msg->cmd, recv_msg->msg,
+						recv_msg->msg_len,
+						buf_out, &out_size);
+		break;
+	default:
+		PMD_DRV_LOG(ERR, "No handler, mod = %d", recv_msg->mod);
+		break;
+	}
+
+	if (!recv_msg->async_mgmt_to_pf) {
+		if (!out_size)
+			out_size = BUF_OUT_DEFAULT_SIZE;
+
+		/* MGMT sent sync msg, send the response */
+		(void)send_msg_to_mgmt_async(pf_to_mgmt, recv_msg->mod,
+					     recv_msg->cmd, buf_out, out_size,
+					     HINIC_MSG_RESPONSE,
+					     recv_msg->msg_id);
+	}
+}
+
+/**
+ * recv_mgmt_msg_handler - handler a message from mgmt cpu
+ * @pf_to_mgmt: PF to MGMT channel
+ * @header: the header of the message
+ * @recv_msg: received message details
+ * @param: customized parameter
+ * Return: 0 when aeq is response message, -1 default result,
+ * and when wrong message or not last message
+ **/
+static int recv_mgmt_msg_handler(struct hinic_msg_pf_to_mgmt *pf_to_mgmt,
+				 u8 *header, struct hinic_recv_msg *recv_msg,
+				 void *param)
+{
+	u64 msg_header = *((u64 *)header);
+	void *msg_body = header + sizeof(msg_header);
+	u8 *dest_msg;
+	u8 seq_id, seq_len;
+	u32 msg_buf_max = MAX_PF_MGMT_BUF_SIZE;
+
+	seq_id = HINIC_MSG_HEADER_GET(msg_header, SEQID);
+	seq_len = HINIC_MSG_HEADER_GET(msg_header, SEG_LEN);
+
+	if (!check_mgmt_seq_id_and_seg_len(recv_msg, seq_id, seq_len)) {
+		PMD_DRV_LOG(ERR,
+			"Mgmt msg sequence and segment check fail, "
+			"func id: 0x%x, front id: 0x%x, current id: 0x%x, seg len: 0x%x",
+			hinic_global_func_id(pf_to_mgmt->hwdev),
+			recv_msg->sed_id, seq_id, seq_len);
+		return HINIC_RECV_NEXT_AEQE;
+	}
+
+	dest_msg = (u8 *)recv_msg->msg + seq_id * HINIC_MSG_SEG_LEN;
+	msg_buf_max -= seq_id * HINIC_MSG_SEG_LEN;
+	memcpy(dest_msg, msg_body, seq_len);
+
+	if (!HINIC_MSG_HEADER_GET(msg_header, LAST))
+		return HINIC_RECV_NEXT_AEQE;
+
+	recv_msg->cmd = HINIC_MSG_HEADER_GET(msg_header, CMD);
+	recv_msg->mod = HINIC_MSG_HEADER_GET(msg_header, MODULE);
+	recv_msg->async_mgmt_to_pf = HINIC_MSG_HEADER_GET(msg_header,
+							  ASYNC_MGMT_TO_PF);
+	recv_msg->msg_len = HINIC_MSG_HEADER_GET(msg_header, MSG_LEN);
+	recv_msg->msg_id = HINIC_MSG_HEADER_GET(msg_header, MSG_ID);
+
+	if (HINIC_MSG_HEADER_GET(msg_header, DIRECTION) == HINIC_MSG_RESPONSE)
+		return HINIC_RECV_DONE;
+
+	hinic_mgmt_recv_msg_handler(pf_to_mgmt, recv_msg, param);
+
+	return HINIC_RECV_NEXT_AEQE;
+}
+
+/**
+ * hinic_mgmt_msg_aeqe_handler - handler for a mgmt message event
+ * @hwdev: the pointer to the private hardware device object
+ * @header: the header of the message
+ * @size: unused
+ * @param: customized parameter
+ * Return: 0 when aeq is response message,
+ *	   -1 default result, and when wrong message or not last message
+ **/
+static int hinic_mgmt_msg_aeqe_handler(void *hwdev, u8 *header,
+			__rte_unused u8 size, void *param)
+{
+	struct hinic_msg_pf_to_mgmt *pf_to_mgmt =
+				((struct hinic_hwdev *)hwdev)->pf_to_mgmt;
+	struct hinic_recv_msg *recv_msg;
+
+	recv_msg = (HINIC_MSG_HEADER_GET(*(u64 *)header, DIRECTION) ==
+		    HINIC_MSG_DIRECT_SEND) ?
+		    &pf_to_mgmt->recv_msg_from_mgmt :
+		    &pf_to_mgmt->recv_resp_msg_from_mgmt;
+
+	return recv_mgmt_msg_handler(pf_to_mgmt, header, recv_msg, param);
+}
+
+static int hinic_handle_aeqe(void *handle, enum hinic_aeq_type event,
+		      u8 *data, u8 size, void *param)
+{
+	int rc = 0;
+
+	switch (event) {
+	case HINIC_MSG_FROM_MGMT_CPU:
+		rc = hinic_mgmt_msg_aeqe_handler(handle, data, size, param);
+		break;
+	default:
+		PMD_DRV_LOG(ERR, "Unknown event type: 0x%x, size: %d",
+			    event, size);
+		rc = HINIC_RECV_NEXT_AEQE;
+		break;
+	}
+
+	return rc;
+}
+
+/**
+ * hinic_aeq_poll_msg - poll one or continue aeqe, and call dedicated process
+ * @eq: aeq of the chip
+ * @timeout: 0   - poll all aeqe in eq, used in interrupt mode,
+ *           > 0 - poll aeq until get aeqe with 'last' field set to 1,
+ *           used in polling mode.
+ * @param: customized parameter
+ * Return: 0 - Success, EIO - poll timeout, ENODEV - swe not support
+ **/
+int hinic_aeq_poll_msg(struct hinic_eq *eq, u32 timeout, void *param)
+{
+	struct hinic_aeq_elem *aeqe_pos;
+	enum hinic_aeq_type event;
+	u32 aeqe_desc = 0;
+	u16 i;
+	u8 size;
+	int done = HINIC_ERROR;
+	int err = -EFAULT;
+	unsigned long end;
+
+	for (i = 0; ((timeout == 0) && (i < eq->eq_len)) ||
+	     ((timeout > 0) && (done != HINIC_OK) && (i < eq->eq_len)); i++) {
+		err = -EIO;
+		end = jiffies + msecs_to_jiffies(timeout);
+		do {
+			aeqe_pos = GET_CURR_AEQ_ELEM(eq);
+			rte_rmb();
+
+			/* Data in HW is in Big endian Format */
+			aeqe_desc = be32_to_cpu(aeqe_pos->desc);
+
+			/* HW updates wrapped bit,
+			 * when it adds eq element event
+			 */
+			if (EQ_ELEM_DESC_GET(aeqe_desc, WRAPPED)
+			    != eq->wrapped) {
+				err = 0;
+				break;
+			}
+
+			if (timeout != 0)
+				rte_delay_ms(1);
+		} while (time_before(jiffies, end));
+
+		if (err != HINIC_OK) /*poll time out*/
+			break;
+
+		event = EQ_ELEM_DESC_GET(aeqe_desc, TYPE);
+		if (EQ_ELEM_DESC_GET(aeqe_desc, SRC)) {
+			PMD_DRV_LOG(ERR, "AEQ sw event not support %d",
+				event);
+			return -ENODEV;
+
+		} else {
+			size = EQ_ELEM_DESC_GET(aeqe_desc, SIZE);
+			done = hinic_handle_aeqe(eq->hwdev, event,
+						 aeqe_pos->aeqe_data,
+						 size, param);
+		}
+
+		eq->cons_idx++;
+		if (eq->cons_idx == eq->eq_len) {
+			eq->cons_idx = 0;
+			eq->wrapped = !eq->wrapped;
+		}
+	}
+
+	eq_update_ci(eq);
+
+	return err;
+}
+
+int hinic_comm_pf_to_mgmt_init(struct hinic_hwdev *hwdev)
+{
+	int rc;
+
+	rc = hinic_pf_to_mgmt_init(hwdev);
+	if (rc)
+		return rc;
+
+	hwdev->pf_to_mgmt->rx_aeq = &hwdev->aeqs->aeq[HINIC_MGMT_RSP_AEQN];
+
+	return 0;
+}
+
+void hinic_comm_pf_to_mgmt_free(struct hinic_hwdev *hwdev)
+{
+	hinic_pf_to_mgmt_free(hwdev);
+}
+
+void hinic_dev_handle_aeq_event(struct hinic_hwdev *hwdev, void *param)
+{
+	struct hinic_eq *aeq = &hwdev->aeqs->aeq[0];
+
+	/* clear resend timer cnt register */
+	hinic_misx_intr_clear_resend_bit(hwdev, aeq->eq_irq.msix_entry_idx,
+					 EQ_MSIX_RESEND_TIMER_CLEAR);
+	(void)hinic_aeq_poll_msg(aeq, 0, param);
+}
diff --git a/drivers/net/hinic/base/hinic_pmd_mgmt.h b/drivers/net/hinic/base/hinic_pmd_mgmt.h
new file mode 100644
index 000000000..23951cb7e
--- /dev/null
+++ b/drivers/net/hinic/base/hinic_pmd_mgmt.h
@@ -0,0 +1,119 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2017 Huawei Technologies Co., Ltd
+ */
+
+#ifndef _HINIC_PMD_MGMT_H_
+#define _HINIC_PMD_MGMT_H_
+
+#include "hinic_pmd_api_cmd.h"
+#include "hinic_pmd_eqs.h"
+
+#define HINIC_MSG_HEADER_MSG_LEN_SHIFT				0
+#define HINIC_MSG_HEADER_MODULE_SHIFT				11
+#define HINIC_MSG_HEADER_SEG_LEN_SHIFT				16
+#define HINIC_MSG_HEADER_NO_ACK_SHIFT				22
+#define HINIC_MSG_HEADER_ASYNC_MGMT_TO_PF_SHIFT			23
+#define HINIC_MSG_HEADER_SEQID_SHIFT				24
+#define HINIC_MSG_HEADER_LAST_SHIFT				30
+#define HINIC_MSG_HEADER_DIRECTION_SHIFT			31
+#define HINIC_MSG_HEADER_CMD_SHIFT				32
+#define HINIC_MSG_HEADER_PCI_INTF_IDX_SHIFT			48
+#define HINIC_MSG_HEADER_P2P_IDX_SHIFT				50
+#define HINIC_MSG_HEADER_MSG_ID_SHIFT				54
+
+#define HINIC_MSG_HEADER_MSG_LEN_MASK				0x7FF
+#define HINIC_MSG_HEADER_MODULE_MASK				0x1F
+#define HINIC_MSG_HEADER_SEG_LEN_MASK				0x3F
+#define HINIC_MSG_HEADER_NO_ACK_MASK				0x1
+#define HINIC_MSG_HEADER_ASYNC_MGMT_TO_PF_MASK			0x1
+#define HINIC_MSG_HEADER_SEQID_MASK				0x3F
+#define HINIC_MSG_HEADER_LAST_MASK				0x1
+#define HINIC_MSG_HEADER_DIRECTION_MASK				0x1
+#define HINIC_MSG_HEADER_CMD_MASK				0xFF
+#define HINIC_MSG_HEADER_PCI_INTF_IDX_MASK			0x3
+#define HINIC_MSG_HEADER_P2P_IDX_MASK				0xF
+#define HINIC_MSG_HEADER_MSG_ID_MASK				0x3FF
+
+#define HINIC_MSG_HEADER_GET(val, member)			\
+		(((val) >> HINIC_MSG_HEADER_##member##_SHIFT) & \
+		HINIC_MSG_HEADER_##member##_MASK)
+
+#define HINIC_MSG_HEADER_SET(val, member)			\
+		((u64)((val) & HINIC_MSG_HEADER_##member##_MASK) << \
+		HINIC_MSG_HEADER_##member##_SHIFT)
+
+#define HINIC_MGMT_RSP_AEQN		(1)
+
+enum hinic_msg_direction_type {
+	HINIC_MSG_DIRECT_SEND	= 0,
+	HINIC_MSG_RESPONSE	= 1
+};
+enum hinic_msg_segment_type {
+	NOT_LAST_SEGMENT = 0,
+	LAST_SEGMENT	= 1,
+};
+
+enum hinic_msg_ack_type {
+	HINIC_MSG_ACK = 0,
+	HINIC_MSG_NO_ACK = 1,
+};
+
+struct hinic_recv_msg {
+	void			*msg;
+	void			*buf_out;
+
+	u16			msg_len;
+	enum hinic_mod_type	mod;
+	u8			cmd;
+	u16			msg_id;
+	int			async_mgmt_to_pf;
+	u8			sed_id;
+};
+
+#define HINIC_COMM_SELF_CMD_MAX 8
+
+enum comm_pf_to_mgmt_event_state {
+	SEND_EVENT_START = 0,
+	SEND_EVENT_TIMEOUT,
+	SEND_EVENT_END,
+};
+
+struct hinic_msg_pf_to_mgmt {
+	struct hinic_hwdev		*hwdev;
+
+	/* Async cmd can not be scheduling */
+	spinlock_t			async_msg_lock;
+	/* spinlock for sync message */
+	spinlock_t			sync_msg_lock;
+
+	void				*async_msg_buf;
+	void				*sync_msg_buf;
+
+	struct hinic_recv_msg		recv_msg_from_mgmt;
+	struct hinic_recv_msg		recv_resp_msg_from_mgmt;
+
+	u16				async_msg_id;
+	u16				sync_msg_id;
+
+	struct hinic_api_cmd_chain	*cmd_chain[HINIC_API_CMD_MAX];
+
+	struct hinic_eq *rx_aeq;
+};
+
+int hinic_msg_to_mgmt_no_ack(void *hwdev, enum hinic_mod_type mod, u8 cmd,
+			     void *buf_in, u16 in_size, void *buf_out,
+			     u16 *out_size);
+
+int hinic_comm_pf_to_mgmt_init(struct hinic_hwdev *hwdev);
+
+void hinic_comm_pf_to_mgmt_free(struct hinic_hwdev *hwdev);
+
+int hinic_aeq_poll_msg(struct hinic_eq *eq, u32 timeout, void *param);
+
+int hinic_msg_to_mgmt_sync(void *hwdev, enum hinic_mod_type mod, u8 cmd,
+			   void *buf_in, u16 in_size,
+			   void *buf_out, u16 *out_size, u32 timeout);
+
+void hinic_dev_handle_aeq_event(struct hinic_hwdev *hwdev, void *param);
+
+#endif /* _HINIC_PMD_MGMT_H_ */
-- 
2.18.0