[PATCH v3 04/25] net/spnic: introduce event queue

[Yanling Song <songyl@ramaxel.com>]

This patch introduce event queue to receive response message
from hardware or destiation function when a source function
send mbox to it. This commit implements the related data
structure, initialization and interfaces handling the message.

Signed-off-by: Yanling Song <songyl@ramaxel.com>
---
 drivers/net/spnic/base/meson.build   |   1 +
 drivers/net/spnic/base/spnic_eqs.c   | 606 +++++++++++++++++++++++++++
 drivers/net/spnic/base/spnic_eqs.h   | 102 +++++
 drivers/net/spnic/base/spnic_hwdev.c |  44 +-
 drivers/net/spnic/base/spnic_hwdev.h |  22 +
 drivers/net/spnic/base/spnic_mbox.c  |  20 +-
 6 files changed, 790 insertions(+), 5 deletions(-)
 create mode 100644 drivers/net/spnic/base/spnic_eqs.c
 create mode 100644 drivers/net/spnic/base/spnic_eqs.h

diff --git a/drivers/net/spnic/base/meson.build b/drivers/net/spnic/base/meson.build
index de80eef7c4..ce7457f400 100644
--- a/drivers/net/spnic/base/meson.build
+++ b/drivers/net/spnic/base/meson.build
@@ -2,6 +2,7 @@
 # Copyright(c) 2021 Ramaxel Memory Technology, Ltd
 
 sources = [
+	'spnic_eqs.c',
 	'spnic_hwdev.c',
 	'spnic_hwif.c',
 	'spnic_mbox.c'
diff --git a/drivers/net/spnic/base/spnic_eqs.c b/drivers/net/spnic/base/spnic_eqs.c
new file mode 100644
index 0000000000..7953976441
--- /dev/null
+++ b/drivers/net/spnic/base/spnic_eqs.c
@@ -0,0 +1,606 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2021 Ramaxel Memory Technology, Ltd
+ */
+
+#include <ethdev_driver.h>
+#include <rte_memory.h>
+#include <rte_memzone.h>
+#include "spnic_compat.h"
+#include "spnic_hwdev.h"
+#include "spnic_hwif.h"
+#include "spnic_csr.h"
+#include "spnic_eqs.h"
+#include "spnic_mgmt.h"
+#include "spnic_mbox.h"
+
+#define AEQ_CTRL_0_INTR_IDX_SHIFT		0
+#define AEQ_CTRL_0_DMA_ATTR_SHIFT		12
+#define AEQ_CTRL_0_PCI_INTF_IDX_SHIFT		20
+#define AEQ_CTRL_0_INTR_MODE_SHIFT		31
+
+#define AEQ_CTRL_0_INTR_IDX_MASK		0x3FFU
+#define AEQ_CTRL_0_DMA_ATTR_MASK		0x3FU
+#define AEQ_CTRL_0_PCI_INTF_IDX_MASK		0x7U
+#define AEQ_CTRL_0_INTR_MODE_MASK		0x1U
+
+#define AEQ_CTRL_0_SET(val, member)		\
+				(((val) & AEQ_CTRL_0_##member##_MASK) << \
+				AEQ_CTRL_0_##member##_SHIFT)
+
+#define AEQ_CTRL_0_CLEAR(val, member)		\
+				((val) & (~(AEQ_CTRL_0_##member##_MASK \
+					<< AEQ_CTRL_0_##member##_SHIFT)))
+
+#define AEQ_CTRL_1_LEN_SHIFT			0
+#define AEQ_CTRL_1_ELEM_SIZE_SHIFT		24
+#define AEQ_CTRL_1_PAGE_SIZE_SHIFT		28
+
+#define AEQ_CTRL_1_LEN_MASK			0x1FFFFFU
+#define AEQ_CTRL_1_ELEM_SIZE_MASK		0x3U
+#define AEQ_CTRL_1_PAGE_SIZE_MASK		0xFU
+
+#define AEQ_CTRL_1_SET(val, member)		\
+				(((val) & AEQ_CTRL_1_##member##_MASK) << \
+				AEQ_CTRL_1_##member##_SHIFT)
+
+#define AEQ_CTRL_1_CLEAR(val, member)		\
+				((val) & (~(AEQ_CTRL_1_##member##_MASK \
+					<< AEQ_CTRL_1_##member##_SHIFT)))
+
+#define SPNIC_EQ_PROD_IDX_MASK			0xFFFFF
+#define SPNIC_TASK_PROCESS_EQE_LIMIT		1024
+#define SPNIC_EQ_UPDATE_CI_STEP                 64
+
+#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_ELEM_DESC_GET(val, member)		\
+				(((val) >> EQ_ELEM_DESC_##member##_SHIFT) & \
+				EQ_ELEM_DESC_##member##_MASK)
+
+#define EQ_CI_SIMPLE_INDIR_CI_SHIFT		0
+#define EQ_CI_SIMPLE_INDIR_ARMED_SHIFT		21
+#define EQ_CI_SIMPLE_INDIR_AEQ_IDX_SHIFT	30
+
+#define EQ_CI_SIMPLE_INDIR_CI_MASK		0x1FFFFFU
+#define EQ_CI_SIMPLE_INDIR_ARMED_MASK		0x1U
+#define EQ_CI_SIMPLE_INDIR_AEQ_IDX_MASK		0x3U
+
+#define EQ_CI_SIMPLE_INDIR_SET(val, member)		\
+			(((val) & EQ_CI_SIMPLE_INDIR_##member##_MASK) << \
+			EQ_CI_SIMPLE_INDIR_##member##_SHIFT)
+
+#define EQ_CI_SIMPLE_INDIR_CLEAR(val, member)		\
+				((val) & (~(EQ_CI_SIMPLE_INDIR_##member##_MASK \
+				<< EQ_CI_SIMPLE_INDIR_##member##_SHIFT)))
+
+#define EQ_WRAPPED(eq)		((u32)(eq)->wrapped << EQ_VALID_SHIFT)
+
+#define EQ_CONS_IDX(eq)		((eq)->cons_idx | \
+				((u32)(eq)->wrapped << EQ_WRAPPED_SHIFT))
+#define GET_EQ_NUM_PAGES(eq, size)	\
+		((u16)(RTE_ALIGN((u32)((eq)->eq_len * (eq)->elem_size), \
+		(size)) / (size)))
+
+#define GET_EQ_NUM_ELEMS(eq, pg_size)	((pg_size) / (u32)(eq)->elem_size)
+
+#define GET_EQ_ELEMENT(eq, idx)		\
+		(((u8 *)(eq)->virt_addr[(idx) / (eq)->num_elem_in_pg]) + \
+		(u32)(((idx) & ((eq)->num_elem_in_pg - 1)) * (eq)->elem_size))
+
+#define GET_AEQ_ELEM(eq, idx)		((struct spnic_aeq_elem *)\
+					GET_EQ_ELEMENT((eq), (idx)))
+
+#define GET_CURR_AEQ_ELEM(eq)		GET_AEQ_ELEM((eq), (eq)->cons_idx)
+
+#define PAGE_IN_4K(page_size)		((page_size) >> 12)
+#define EQ_SET_HW_PAGE_SIZE_VAL(eq)	\
+		((u32)ilog2(PAGE_IN_4K((eq)->page_size)))
+
+#define ELEMENT_SIZE_IN_32B(eq)		(((eq)->elem_size) >> 5)
+#define EQ_SET_HW_ELEM_SIZE_VAL(eq)	((u32)ilog2(ELEMENT_SIZE_IN_32B(eq)))
+
+#define AEQ_DMA_ATTR_DEFAULT			0
+
+#define EQ_MSIX_RESEND_TIMER_CLEAR		1
+
+#define EQ_WRAPPED_SHIFT			20
+
+#define	EQ_VALID_SHIFT				31
+
+#define aeq_to_aeqs(eq) \
+		container_of((eq) - (eq)->q_id, struct spnic_aeqs, aeq[0])
+
+#define AEQ_MSIX_ENTRY_IDX_0			0
+
+/**
+ * Write the cons idx to hw
+ *
+ * @param[in] eq
+ *   The event queue to update the cons idx
+ * @param[in] arm_state
+ *   Indicate whether report interrupts when generate eq element
+ */
+static void set_eq_cons_idx(struct spnic_eq *eq, u32 arm_state)
+{
+	u32 eq_wrap_ci, val;
+	u32 addr = SPNIC_CSR_AEQ_CI_SIMPLE_INDIR_ADDR;
+
+	eq_wrap_ci = EQ_CONS_IDX(eq);
+
+	/* dpdk pmd driver only aeq0 use int_arm mode */
+	if (eq->q_id != 0)
+		val = EQ_CI_SIMPLE_INDIR_SET(SPNIC_EQ_NOT_ARMED, ARMED);
+	else
+		val = EQ_CI_SIMPLE_INDIR_SET(arm_state, ARMED);
+
+	val = val | EQ_CI_SIMPLE_INDIR_SET(eq_wrap_ci, CI) |
+	      EQ_CI_SIMPLE_INDIR_SET(eq->q_id, AEQ_IDX);
+
+	spnic_hwif_write_reg(eq->hwdev->hwif, addr, val);
+}
+
+/**
+ * Set aeq's ctrls registers
+ *
+ * @param[in] eq
+ *   The event queue for setting
+ */
+static void set_aeq_ctrls(struct spnic_eq *eq)
+{
+	struct spnic_hwif *hwif = eq->hwdev->hwif;
+	struct irq_info *eq_irq = &eq->eq_irq;
+	u32 addr, val, ctrl0, ctrl1, page_size_val, elem_size;
+	u32 pci_intf_idx = SPNIC_PCI_INTF_IDX(hwif);
+
+	/* Set ctrl0 */
+	addr = SPNIC_CSR_AEQ_CTRL_0_ADDR;
+
+	val = spnic_hwif_read_reg(hwif, addr);
+
+	val = AEQ_CTRL_0_CLEAR(val, INTR_IDX) &
+	      AEQ_CTRL_0_CLEAR(val, DMA_ATTR) &
+	      AEQ_CTRL_0_CLEAR(val, PCI_INTF_IDX) &
+	      AEQ_CTRL_0_CLEAR(val, INTR_MODE);
+
+	ctrl0 = AEQ_CTRL_0_SET(eq_irq->msix_entry_idx, INTR_IDX) |
+		AEQ_CTRL_0_SET(AEQ_DMA_ATTR_DEFAULT, DMA_ATTR) |
+		AEQ_CTRL_0_SET(pci_intf_idx, PCI_INTF_IDX) |
+		AEQ_CTRL_0_SET(SPNIC_INTR_MODE_ARMED, INTR_MODE);
+
+	val |= ctrl0;
+
+	spnic_hwif_write_reg(hwif, addr, val);
+
+	/* Set ctrl1 */
+	addr = SPNIC_CSR_AEQ_CTRL_1_ADDR;
+
+	page_size_val = EQ_SET_HW_PAGE_SIZE_VAL(eq);
+	elem_size = EQ_SET_HW_ELEM_SIZE_VAL(eq);
+
+	ctrl1 = AEQ_CTRL_1_SET(eq->eq_len, LEN)	|
+		AEQ_CTRL_1_SET(elem_size, ELEM_SIZE)	|
+		AEQ_CTRL_1_SET(page_size_val, PAGE_SIZE);
+
+	spnic_hwif_write_reg(hwif, addr, ctrl1);
+}
+
+/**
+ * Initialize all the elements in the aeq
+ *
+ * @param[in] eq
+ *   The event queue
+ * @param[in] init_val
+ *   Value to init
+ */
+static void aeq_elements_init(struct spnic_eq *eq, u32 init_val)
+{
+	struct spnic_aeq_elem *aeqe = NULL;
+	u32 i;
+
+	for (i = 0; i < eq->eq_len; i++) {
+		aeqe = GET_AEQ_ELEM(eq, i);
+		aeqe->desc = cpu_to_be32(init_val);
+	}
+
+	rte_wmb(); /* Write the init values */
+}
+
+/**
+ * Allocate the pages for the queue
+ *
+ * @param[in] eq
+ *   The event queue
+ *
+ * @retval zero : Success
+ * @retval negative : Failure.
+ */
+static int alloc_eq_pages(struct spnic_eq *eq)
+{
+	struct spnic_hwif *hwif = eq->hwdev->hwif;
+	u64 dma_addr_size, virt_addr_size, eq_mz_size;
+	u32 reg, init_val;
+	u16 pg_num, i;
+	int err;
+
+	dma_addr_size = eq->num_pages * sizeof(*eq->dma_addr);
+	virt_addr_size = eq->num_pages * sizeof(*eq->virt_addr);
+	eq_mz_size = eq->num_pages * sizeof(*eq->eq_mz);
+
+	eq->dma_addr = rte_zmalloc("eq_dma", dma_addr_size,
+				   SPNIC_MEM_ALLOC_ALIGN_MIN);
+	if (!eq->dma_addr)
+		return -ENOMEM;
+
+	eq->virt_addr = rte_zmalloc("eq_va", virt_addr_size,
+				    SPNIC_MEM_ALLOC_ALIGN_MIN);
+	if (!eq->virt_addr) {
+		err = -ENOMEM;
+		goto virt_addr_alloc_err;
+	}
+
+	eq->eq_mz = rte_zmalloc("eq_mz", eq_mz_size, SPNIC_MEM_ALLOC_ALIGN_MIN);
+	if (!eq->eq_mz) {
+		err = -ENOMEM;
+		goto eq_mz_alloc_err;
+	}
+
+	for (pg_num = 0; pg_num < eq->num_pages; pg_num++) {
+		eq->eq_mz[pg_num] = rte_eth_dma_zone_reserve(eq->hwdev->eth_dev,
+					"eq_mz", eq->q_id, eq->page_size,
+					eq->page_size, SOCKET_ID_ANY);
+		if (!eq->eq_mz[pg_num]) {
+			err = -ENOMEM;
+			goto dma_alloc_err;
+		}
+
+		eq->dma_addr[pg_num] = eq->eq_mz[pg_num]->iova;
+		eq->virt_addr[pg_num] = eq->eq_mz[pg_num]->addr;
+
+		reg = SPNIC_AEQ_HI_PHYS_ADDR_REG(pg_num);
+		spnic_hwif_write_reg(hwif, reg,
+				     upper_32_bits(eq->dma_addr[pg_num]));
+
+		reg = SPNIC_AEQ_LO_PHYS_ADDR_REG(pg_num);
+		spnic_hwif_write_reg(hwif, reg,
+				     lower_32_bits(eq->dma_addr[pg_num]));
+	}
+
+	eq->num_elem_in_pg = GET_EQ_NUM_ELEMS(eq, eq->page_size);
+	if (eq->num_elem_in_pg & (eq->num_elem_in_pg - 1)) {
+		PMD_DRV_LOG(ERR, "Number element in eq page != power of 2");
+		err = -EINVAL;
+		goto dma_alloc_err;
+	}
+	init_val = EQ_WRAPPED(eq);
+
+	aeq_elements_init(eq, init_val);
+
+	return 0;
+
+dma_alloc_err:
+	for (i = 0; i < pg_num; i++)
+		rte_memzone_free(eq->eq_mz[i]);
+
+eq_mz_alloc_err:
+	rte_free(eq->virt_addr);
+
+virt_addr_alloc_err:
+	rte_free(eq->dma_addr);
+
+	return err;
+}
+
+/**
+ * Free the pages of the queue
+ *
+ * @param[in] eq
+ *   The event queue
+ */
+static void free_eq_pages(struct spnic_eq *eq)
+{
+	u16 pg_num;
+
+	for (pg_num = 0; pg_num < eq->num_pages; pg_num++)
+		rte_memzone_free(eq->eq_mz[pg_num]);
+
+	rte_free(eq->eq_mz);
+	rte_free(eq->virt_addr);
+	rte_free(eq->dma_addr);
+}
+
+static inline u32 get_page_size(struct spnic_eq *eq)
+{
+	u32 total_size;
+	u16 count, n = 0;
+
+	total_size = RTE_ALIGN((eq->eq_len * eq->elem_size),
+			       SPNIC_MIN_EQ_PAGE_SIZE);
+	if (total_size <= (SPNIC_EQ_MAX_PAGES * SPNIC_MIN_EQ_PAGE_SIZE))
+		return SPNIC_MIN_EQ_PAGE_SIZE;
+
+	count = (u16)(RTE_ALIGN((total_size / SPNIC_EQ_MAX_PAGES),
+		      SPNIC_MIN_EQ_PAGE_SIZE) / SPNIC_MIN_EQ_PAGE_SIZE);
+	if (!(count & (count - 1)))
+		return SPNIC_MIN_EQ_PAGE_SIZE * count;
+
+	while (count) {
+		count >>= 1;
+		n++;
+	}
+
+	return ((u32)SPNIC_MIN_EQ_PAGE_SIZE) << n;
+}
+
+/**
+ * Initialize aeq
+ *
+ * @param[in] eq
+ *   The event queue
+ * @param[in] hwdev
+ *   The pointer to the private hardware device object
+ * @param[in] q_id
+ *   Queue id number
+ * @param[in] q_len
+ *   The number of EQ elements
+ *
+ * @retval zero : Success
+ * @retval non-zero : Failure.
+ */
+static int init_aeq(struct spnic_eq *eq, struct spnic_hwdev *hwdev,
+		    u16 q_id, u32 q_len)
+{
+	int err = 0;
+
+	eq->hwdev = hwdev;
+	eq->q_id = q_id;
+	eq->eq_len = q_len;
+
+	/* Indirect access should set q_id first */
+	spnic_hwif_write_reg(hwdev->hwif, SPNIC_AEQ_INDIR_IDX_ADDR, eq->q_id);
+	rte_wmb(); /* write index before config */
+
+	/* Clear eq_len to force eqe drop in hardware */
+	spnic_hwif_write_reg(eq->hwdev->hwif, SPNIC_CSR_AEQ_CTRL_1_ADDR, 0);
+	rte_wmb();
+	/* Init aeq pi to 0 before allocating aeq pages */
+	spnic_hwif_write_reg(eq->hwdev->hwif, SPNIC_CSR_AEQ_PROD_IDX_ADDR, 0);
+
+	eq->cons_idx = 0;
+	eq->wrapped = 0;
+
+	eq->elem_size = SPNIC_AEQE_SIZE;
+	eq->page_size = get_page_size(eq);
+	eq->orig_page_size = eq->page_size;
+	eq->num_pages = GET_EQ_NUM_PAGES(eq, eq->page_size);
+	if (eq->num_pages > SPNIC_EQ_MAX_PAGES) {
+		PMD_DRV_LOG(ERR, "Too many pages: %d for aeq", eq->num_pages);
+		return -EINVAL;
+	}
+
+	err = alloc_eq_pages(eq);
+	if (err) {
+		PMD_DRV_LOG(ERR, "Allocate pages for eq failed");
+		return err;
+	}
+
+	/* Pmd driver uses AEQ_MSIX_ENTRY_IDX_0 */
+	eq->eq_irq.msix_entry_idx = AEQ_MSIX_ENTRY_IDX_0;
+	set_aeq_ctrls(eq);
+
+	set_eq_cons_idx(eq, SPNIC_EQ_ARMED);
+
+	if (eq->q_id == 0)
+		spnic_set_msix_state(hwdev, 0, SPNIC_MSIX_ENABLE);
+
+	eq->poll_retry_nr = SPNIC_RETRY_NUM;
+
+	return 0;
+}
+
+/**
+ * Remove aeq
+ *
+ * @param[in] eq
+ *   The event queue
+ */
+static void remove_aeq(struct spnic_eq *eq)
+{
+	struct irq_info *entry = &eq->eq_irq;
+
+	if (eq->q_id == 0)
+		spnic_set_msix_state(eq->hwdev, entry->msix_entry_idx,
+				     SPNIC_MSIX_DISABLE);
+
+	/* Indirect access should set q_id first */
+	spnic_hwif_write_reg(eq->hwdev->hwif, SPNIC_AEQ_INDIR_IDX_ADDR,
+			     eq->q_id);
+
+	rte_wmb(); /* Write index before config */
+
+	/* Clear eq_len to avoid hw access host memory */
+	spnic_hwif_write_reg(eq->hwdev->hwif, SPNIC_CSR_AEQ_CTRL_1_ADDR, 0);
+
+	/* Update cons_idx to avoid invalid interrupt */
+	eq->cons_idx = spnic_hwif_read_reg(eq->hwdev->hwif,
+					   SPNIC_CSR_AEQ_PROD_IDX_ADDR);
+	set_eq_cons_idx(eq, SPNIC_EQ_NOT_ARMED);
+
+	free_eq_pages(eq);
+}
+
+/**
+ * Init all aeqs
+ *
+ * @param[in] hwdev
+ *   The pointer to the private hardware device object
+ *
+ * @retval zero : Success
+ * @retval non-zero : Failure.
+ */
+int spnic_aeqs_init(struct spnic_hwdev *hwdev)
+{
+	struct spnic_aeqs *aeqs = NULL;
+	u16 num_aeqs;
+	int err;
+	u16 i, q_id;
+
+	if (!hwdev)
+		return -EINVAL;
+
+	num_aeqs = SPNIC_HWIF_NUM_AEQS(hwdev->hwif);
+	if (num_aeqs > SPNIC_MAX_AEQS) {
+		PMD_DRV_LOG(INFO, "Adjust aeq num to %d", SPNIC_MAX_AEQS);
+		num_aeqs = SPNIC_MAX_AEQS;
+	} else if (num_aeqs < SPNIC_MIN_AEQS) {
+		PMD_DRV_LOG(ERR, "PMD needs %d AEQs, Chip has %d",
+			    SPNIC_MIN_AEQS, num_aeqs);
+		return -EINVAL;
+	}
+
+	aeqs = rte_zmalloc("spnic_aeqs", sizeof(*aeqs),
+			   SPNIC_MEM_ALLOC_ALIGN_MIN);
+	if (!aeqs)
+		return -ENOMEM;
+
+	hwdev->aeqs = aeqs;
+	aeqs->hwdev = hwdev;
+	aeqs->num_aeqs = num_aeqs;
+
+	for (q_id = 0; q_id < num_aeqs; q_id++) {
+		err = init_aeq(&aeqs->aeq[q_id], hwdev, q_id,
+			       SPNIC_DEFAULT_AEQ_LEN);
+		if (err) {
+			PMD_DRV_LOG(ERR, "Init aeq %d failed", q_id);
+			goto init_aeq_err;
+		}
+	}
+
+	return 0;
+
+init_aeq_err:
+	for (i = 0; i < q_id; i++)
+		remove_aeq(&aeqs->aeq[i]);
+
+	rte_free(aeqs);
+	return err;
+}
+
+/**
+ * Free all aeqs
+ *
+ * @param[in] hwdev
+ *   The pointer to the private hardware device object
+ */
+void spnic_aeqs_free(struct spnic_hwdev *hwdev)
+{
+	struct spnic_aeqs *aeqs = hwdev->aeqs;
+	u16 q_id;
+
+	for (q_id = 0; q_id < aeqs->num_aeqs; q_id++)
+		remove_aeq(&aeqs->aeq[q_id]);
+
+	rte_free(aeqs);
+}
+
+static int aeq_elem_handler(struct spnic_eq *eq, u32 aeqe_desc,
+			    struct spnic_aeq_elem *aeqe_pos, void *param)
+{
+	enum spnic_aeq_type event;
+	u8 data[SPNIC_AEQE_DATA_SIZE];
+	u8 size;
+
+	event = EQ_ELEM_DESC_GET(aeqe_desc, TYPE);
+
+	memcpy(data, aeqe_pos->aeqe_data, SPNIC_AEQE_DATA_SIZE);
+	spnic_be32_to_cpu(data, SPNIC_AEQE_DATA_SIZE);
+	size = EQ_ELEM_DESC_GET(aeqe_desc, SIZE);
+
+	if (event == SPNIC_MBX_FROM_FUNC) {
+		return spnic_mbox_func_aeqe_handler(eq->hwdev, data, size,
+						    param);
+	} else {
+		PMD_DRV_LOG(ERR, "AEQ hw event not support %d", event);
+		return -EINVAL;
+	}
+}
+
+/**
+ * Poll one or continue aeqe, and call dedicated process
+ *
+ * @param[in] eq
+ *   The event queue
+ * @param[in] 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[in] param
+ *   Customized parameter
+ *
+ * @retval zero : Success
+ * @retval -EIO : Poll timeout
+ * @retval -ENODEV : Swe not support
+ */
+int spnic_aeq_poll_msg(struct spnic_eq *eq, u32 timeout, void *param)
+{
+	struct spnic_aeq_elem *aeqe_pos = NULL;
+	u32 aeqe_desc = 0;
+	u32 eqe_cnt = 0;
+	int err = -EFAULT;
+	int done = SPNIC_MSG_HANDLER_RES;
+	unsigned long end;
+	u16 i;
+
+	for (i = 0; ((timeout == 0) && (i < eq->eq_len)) ||
+	     ((timeout > 0) && (done != 0) && (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)
+				usleep(1000);
+		} while (time_before(jiffies, end));
+
+		if (err != 0) /* Poll time out */
+			break;
+
+		done = aeq_elem_handler(eq, aeqe_desc, aeqe_pos, param);
+
+		eq->cons_idx++;
+		if (eq->cons_idx == eq->eq_len) {
+			eq->cons_idx = 0;
+			eq->wrapped = !eq->wrapped;
+		}
+
+		if (++eqe_cnt >= SPNIC_EQ_UPDATE_CI_STEP) {
+			eqe_cnt = 0;
+			set_eq_cons_idx(eq, SPNIC_EQ_NOT_ARMED);
+		}
+	}
+
+	set_eq_cons_idx(eq, SPNIC_EQ_ARMED);
+
+	return err;
+}
diff --git a/drivers/net/spnic/base/spnic_eqs.h b/drivers/net/spnic/base/spnic_eqs.h
new file mode 100644
index 0000000000..70ddbe19e1
--- /dev/null
+++ b/drivers/net/spnic/base/spnic_eqs.h
@@ -0,0 +1,102 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2021 Ramaxel Memory Technology, Ltd
+ */
+
+#ifndef _SPNIC_EQS_H_
+#define _SPNIC_EQS_H_
+
+#define SPNIC_MAX_AEQS			4
+#define SPNIC_MIN_AEQS			2
+#define SPNIC_EQ_MAX_PAGES		4
+
+#define SPNIC_AEQE_SIZE                 64
+
+#define SPNIC_AEQE_DESC_SIZE		4
+#define SPNIC_AEQE_DATA_SIZE		\
+			(SPNIC_AEQE_SIZE - SPNIC_AEQE_DESC_SIZE)
+
+/* Linux is 1K, dpdk is 64 */
+#define SPNIC_DEFAULT_AEQ_LEN		64
+
+#define SPNIC_MIN_EQ_PAGE_SIZE		0x1000   /* Min eq page size 4K Bytes */
+#define SPNIC_MAX_EQ_PAGE_SIZE		0x400000 /* Max eq page size 4M Bytes */
+
+#define SPNIC_MIN_AEQ_LEN		64
+#define SPNIC_MAX_AEQ_LEN		\
+	((SPNIC_MAX_EQ_PAGE_SIZE / SPNIC_AEQE_SIZE) * SPNIC_EQ_MAX_PAGES)
+
+#define EQ_IRQ_NAME_LEN			64
+
+enum spnic_eq_intr_mode {
+	SPNIC_INTR_MODE_ARMED,
+	SPNIC_INTR_MODE_ALWAYS
+};
+
+enum spnic_eq_ci_arm_state {
+	SPNIC_EQ_NOT_ARMED,
+	SPNIC_EQ_ARMED
+};
+
+struct irq_info {
+	u16 msix_entry_idx; /* IRQ corresponding index number */
+	u32 irq_id;         /* The IRQ number from OS */
+};
+
+#define SPNIC_RETRY_NUM	10
+
+enum spnic_aeq_type {
+	SPNIC_HW_INTER_INT = 0,
+	SPNIC_MBX_FROM_FUNC = 1,
+	SPNIC_MSG_FROM_MGMT_CPU = 2,
+	SPNIC_API_RSP = 3,
+	SPNIC_API_CHAIN_STS = 4,
+	SPNIC_MBX_SEND_RSLT = 5,
+	SPNIC_MAX_AEQ_EVENTS
+};
+
+struct spnic_eq {
+	struct spnic_hwdev *hwdev;
+	u16 q_id;
+	u32 page_size;
+	u32 orig_page_size;
+	u32 eq_len;
+
+	u32 cons_idx;
+	u16 wrapped;
+
+	u16 elem_size;
+	u16 num_pages;
+	u32 num_elem_in_pg;
+
+	struct irq_info eq_irq;
+
+	const struct rte_memzone **eq_mz;
+	rte_iova_t *dma_addr;
+	u8 **virt_addr;
+
+	u16 poll_retry_nr;
+};
+
+struct spnic_aeq_elem {
+	u8  aeqe_data[SPNIC_AEQE_DATA_SIZE];
+	u32 desc;
+};
+
+struct spnic_aeqs {
+	struct spnic_hwdev *hwdev;
+
+	struct spnic_eq aeq[SPNIC_MAX_AEQS];
+	u16 num_aeqs;
+};
+
+int spnic_aeqs_init(struct spnic_hwdev *hwdev);
+
+void spnic_aeqs_free(struct spnic_hwdev *hwdev);
+
+void spnic_dump_aeq_info(struct spnic_hwdev *hwdev);
+
+int spnic_aeq_poll_msg(struct spnic_eq *eq, u32 timeout, void *param);
+
+void spnic_dev_handle_aeq_event(struct spnic_hwdev *hwdev, void *param);
+
+#endif /* _SPNIC_EQS_H_ */
diff --git a/drivers/net/spnic/base/spnic_hwdev.c b/drivers/net/spnic/base/spnic_hwdev.c
index bcecbaa895..e45058423c 100644
--- a/drivers/net/spnic/base/spnic_hwdev.c
+++ b/drivers/net/spnic/base/spnic_hwdev.c
@@ -5,10 +5,45 @@
 #include "spnic_compat.h"
 #include "spnic_csr.h"
 #include "spnic_hwif.h"
+#include "spnic_eqs.h"
 #include "spnic_mgmt.h"
 #include "spnic_mbox.h"
 #include "spnic_hwdev.h"
 
+typedef void (*mgmt_event_cb)(void *handle, void *buf_in, u16 in_size,
+			      void *buf_out, u16 *out_size);
+
+struct mgmt_event_handle {
+	u16 cmd;
+	mgmt_event_cb proc;
+};
+
+const struct mgmt_event_handle mgmt_event_proc[] = {
+};
+
+void pf_handle_mgmt_comm_event(void *handle, __rte_unused void *pri_handle,
+			       u16 cmd, void *buf_in, u16 in_size,
+			       void *buf_out, u16 *out_size)
+{
+	struct spnic_hwdev *hwdev = handle;
+	u32 i, event_num = RTE_DIM(mgmt_event_proc);
+
+	if (!hwdev)
+		return;
+
+	for (i = 0; i < event_num; i++) {
+		if (cmd == mgmt_event_proc[i].cmd) {
+			if (mgmt_event_proc[i].proc)
+				mgmt_event_proc[i].proc(handle, buf_in, in_size,
+							buf_out, out_size);
+
+			return;
+		}
+	}
+
+	PMD_DRV_LOG(WARNING, "Unsupported mgmt cpu event %d to process", cmd);
+}
+
 int vf_handle_pf_comm_mbox(void *handle, __rte_unused void *pri_handle,
 			   __rte_unused u16 cmd, __rte_unused void *buf_in,
 			   __rte_unused u16 in_size, __rte_unused void *buf_out,
@@ -28,6 +63,12 @@ static int init_mgmt_channel(struct spnic_hwdev *hwdev)
 {
 	int err;
 
+	err = spnic_aeqs_init(hwdev);
+	if (err) {
+		PMD_DRV_LOG(ERR, "Init async event queues failed");
+		return err;
+	}
+
 	err = spnic_func_to_func_init(hwdev);
 	if (err) {
 		PMD_DRV_LOG(ERR, "Init mailbox channel failed");
@@ -37,6 +78,7 @@ static int init_mgmt_channel(struct spnic_hwdev *hwdev)
 	return 0;
 
 func_to_func_init_err:
+	spnic_aeqs_free(hwdev);
 
 	return err;
 }
@@ -44,9 +86,9 @@ static int init_mgmt_channel(struct spnic_hwdev *hwdev)
 static void free_mgmt_channel(struct spnic_hwdev *hwdev)
 {
 	spnic_func_to_func_free(hwdev);
+	spnic_aeqs_free(hwdev);
 }
 
-
 static int spnic_init_comm_ch(struct spnic_hwdev *hwdev)
 {
 	int err;
diff --git a/drivers/net/spnic/base/spnic_hwdev.h b/drivers/net/spnic/base/spnic_hwdev.h
index 4a20e34754..48f3db7658 100644
--- a/drivers/net/spnic/base/spnic_hwdev.h
+++ b/drivers/net/spnic/base/spnic_hwdev.h
@@ -8,6 +8,21 @@
 #include <rte_ether.h>
 
 #define SPNIC_CHIP_FAULT_SIZE		(110 * 1024)
+struct cfg_mgmt_info;
+struct spnic_hwif;
+struct spnic_aeqs;
+struct spnic_mbox;
+struct spnic_msg_pf_to_mgmt;
+
+struct ffm_intr_info {
+	u8 node_id;
+	/* Error level of the interrupt source */
+	u8 err_level;
+	/* Classification by interrupt source properties */
+	u16 err_type;
+	u32 err_csr_addr;
+	u32 err_csr_value;
+};
 
 struct spnic_hwdev {
 	void *dev_handle; /* Pointer to spnic_nic_dev */
@@ -18,6 +33,9 @@ struct spnic_hwdev {
 
 	struct spnic_hwif *hwif;
 	struct spnic_mbox *func_to_func;
+	struct cfg_mgmt_info *cfg_mgmt;
+	struct spnic_aeqs *aeqs;
+	struct spnic_msg_pf_to_mgmt *pf_to_mgmt;
 	u8 *chip_fault_stats;
 
 	u16 max_vfs;
@@ -29,6 +47,10 @@ int vf_handle_pf_comm_mbox(void *handle, __rte_unused void *pri_handle,
 			   __rte_unused u16 in_size, __rte_unused void *buf_out,
 			   __rte_unused u16 *out_size);
 
+void pf_handle_mgmt_comm_event(void *handle, __rte_unused void *pri_handle,
+			       u16 cmd, void *buf_in, u16 in_size,
+			       void *buf_out, u16 *out_size);
+
 int spnic_init_hwdev(struct spnic_hwdev *hwdev);
 
 void spnic_free_hwdev(struct spnic_hwdev *hwdev);
diff --git a/drivers/net/spnic/base/spnic_mbox.c b/drivers/net/spnic/base/spnic_mbox.c
index 0a15017874..789f5c245e 100644
--- a/drivers/net/spnic/base/spnic_mbox.c
+++ b/drivers/net/spnic/base/spnic_mbox.c
@@ -2,13 +2,13 @@
  * Copyright(c) 2021 Ramaxel Memory Technology, Ltd
  */
 
-#include <rte_atomic.h>
 #include <ethdev_driver.h>
 #include "spnic_compat.h"
 #include "spnic_hwdev.h"
 #include "spnic_csr.h"
-#include "spnic_hwif.h"
 #include "spnic_mgmt.h"
+#include "spnic_hwif.h"
+#include "spnic_eqs.h"
 #include "spnic_mbox.h"
 
 #define SPNIC_MBOX_INT_DST_FUNC_SHIFT				0
@@ -713,7 +713,9 @@ static int spnic_mbox_to_func(struct spnic_mbox *func_to_func,
 	/* Use mbox_resp to hole data which responded from other function */
 	struct spnic_recv_mbox *mbox_for_resp = NULL;
 	struct mbox_msg_info msg_info = {0};
+	struct spnic_eq *aeq = NULL;
 	u16 mbox_rsp_idx;
+	u32 time;
 	int err;
 
 	mbox_rsp_idx = (dst_func == SPNIC_MGMT_SRC_ID) ?
@@ -748,9 +750,19 @@ static int spnic_mbox_to_func(struct spnic_mbox *func_to_func,
 		goto send_err;
 	}
 
+	time = msecs_to_jiffies(timeout ? timeout : SPNIC_MBOX_COMP_TIME);
+	aeq = &func_to_func->hwdev->aeqs->aeq[SPNIC_MBOX_RSP_MSG_AEQ];
+	err = spnic_aeq_poll_msg(aeq, time, NULL);
+	if (err) {
+		set_mbox_to_func_event(func_to_func, EVENT_TIMEOUT);
+		PMD_DRV_LOG(ERR, "Send mailbox message time out");
+		err = -ETIMEDOUT;
+		goto send_err;
+	}
+
 	if (mod != mbox_for_resp->mod || cmd != mbox_for_resp->cmd) {
-		PMD_DRV_LOG(ERR, "Invalid response mbox message, mod: 0x%x, cmd: 0x%x, expect mod: 0x%x, cmd: 0x%x, timeout0x%x\n",
-			    mbox_for_resp->mod, mbox_for_resp->cmd, mod, cmd, timeout);
+		PMD_DRV_LOG(ERR, "Invalid response mbox message, mod: 0x%x, cmd: 0x%x, expect mod: 0x%x, cmd: 0x%x\n",
+			    mbox_for_resp->mod, mbox_for_resp->cmd, mod, cmd);
 		err = -EFAULT;
 		goto send_err;
 	}
-- 
2.32.0