// SPDX-License-Identifier: GPL-2.0+
// Copyright (c) 2016-2017 Hisilicon Limited.

#include <linux/etherdevice.h>
#include <net/rtnetlink.h>
#include "hclgevf_cmd.h"
#include "hclgevf_main.h"
#include "hclge_mbx.h"
#include "hnae3.h"

#define HCLGEVF_NAME    "hclgevf"

static int hclgevf_init_hdev(struct hclgevf_dev *hdev);
static void hclgevf_uninit_hdev(struct hclgevf_dev *hdev);
static struct hnae3_ae_algo ae_algovf;

static const struct pci_device_id ae_algovf_pci_tbl[] = {
        {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_100G_VF), 0},
        {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_100G_RDMA_DCB_PFC_VF), 0},
        /* required last entry */
        {0, }
};

MODULE_DEVICE_TABLE(pci, ae_algovf_pci_tbl);

static inline struct hclgevf_dev *hclgevf_ae_get_hdev(
        struct hnae3_handle *handle)
{
        return container_of(handle, struct hclgevf_dev, nic);
}

static int hclgevf_tqps_update_stats(struct hnae3_handle *handle)
{
        struct hclgevf_dev *hdev = hclgevf_ae_get_hdev(handle);
        struct hnae3_queue *queue;
        struct hclgevf_desc desc;
        struct hclgevf_tqp *tqp;
        int status;
        int i;

        for (i = 0; i < hdev->num_tqps; i++) {
                queue = handle->kinfo.tqp[i];
                tqp = container_of(queue, struct hclgevf_tqp, q);
                hclgevf_cmd_setup_basic_desc(&desc,
                                             HCLGEVF_OPC_QUERY_RX_STATUS,
                                             true);

                desc.data[0] = cpu_to_le32(tqp->index & 0x1ff);
                status = hclgevf_cmd_send(&hdev->hw, &desc, 1);
                if (status) {
                        dev_err(&hdev->pdev->dev,
                                "Query tqp stat fail, status = %d,queue = %d\n",
                                status, i);
                        return status;
                }
                tqp->tqp_stats.rcb_rx_ring_pktnum_rcd +=
                        le32_to_cpu(desc.data[1]);

                hclgevf_cmd_setup_basic_desc(&desc, HCLGEVF_OPC_QUERY_TX_STATUS,
                                             true);

                desc.data[0] = cpu_to_le32(tqp->index & 0x1ff);
                status = hclgevf_cmd_send(&hdev->hw, &desc, 1);
                if (status) {
                        dev_err(&hdev->pdev->dev,
                                "Query tqp stat fail, status = %d,queue = %d\n",
                                status, i);
                        return status;
                }
                tqp->tqp_stats.rcb_tx_ring_pktnum_rcd +=
                        le32_to_cpu(desc.data[1]);
        }

        return 0;
}

static u64 *hclgevf_tqps_get_stats(struct hnae3_handle *handle, u64 *data)
{
        struct hnae3_knic_private_info *kinfo = &handle->kinfo;
        struct hclgevf_dev *hdev = hclgevf_ae_get_hdev(handle);
        struct hclgevf_tqp *tqp;
        u64 *buff = data;
        int i;

        for (i = 0; i < hdev->num_tqps; i++) {
                tqp = container_of(handle->kinfo.tqp[i], struct hclgevf_tqp, q);
                *buff++ = tqp->tqp_stats.rcb_tx_ring_pktnum_rcd;
        }
        for (i = 0; i < kinfo->num_tqps; i++) {
                tqp = container_of(handle->kinfo.tqp[i], struct hclgevf_tqp, q);
                *buff++ = tqp->tqp_stats.rcb_rx_ring_pktnum_rcd;
        }

        return buff;
}

static int hclgevf_tqps_get_sset_count(struct hnae3_handle *handle, int strset)
{
        struct hclgevf_dev *hdev = hclgevf_ae_get_hdev(handle);

        return hdev->num_tqps * 2;
}

static u8 *hclgevf_tqps_get_strings(struct hnae3_handle *handle, u8 *data)
{
        struct hclgevf_dev *hdev = hclgevf_ae_get_hdev(handle);
        u8 *buff = data;
        int i = 0;

        for (i = 0; i < hdev->num_tqps; i++) {
                struct hclgevf_tqp *tqp = container_of(handle->kinfo.tqp[i],
                        struct hclgevf_tqp, q);
                snprintf(buff, ETH_GSTRING_LEN, "txq#%d_pktnum_rcd",
                         tqp->index);
                buff += ETH_GSTRING_LEN;
        }

        for (i = 0; i < hdev->num_tqps; i++) {
                struct hclgevf_tqp *tqp = container_of(handle->kinfo.tqp[i],
                        struct hclgevf_tqp, q);
                snprintf(buff, ETH_GSTRING_LEN, "rxq#%d_pktnum_rcd",
                         tqp->index);
                buff += ETH_GSTRING_LEN;
        }

        return buff;
}

static void hclgevf_update_stats(struct hnae3_handle *handle,
                                 struct net_device_stats *net_stats)
{
        struct hclgevf_dev *hdev = hclgevf_ae_get_hdev(handle);
        int status;

        status = hclgevf_tqps_update_stats(handle);
        if (status)
                dev_err(&hdev->pdev->dev,
                        "VF update of TQPS stats fail, status = %d.\n",
                        status);
}

static int hclgevf_get_sset_count(struct hnae3_handle *handle, int strset)
{
        if (strset == ETH_SS_TEST)
                return -EOPNOTSUPP;
        else if (strset == ETH_SS_STATS)
                return hclgevf_tqps_get_sset_count(handle, strset);

        return 0;
}

static void hclgevf_get_strings(struct hnae3_handle *handle, u32 strset,
                                u8 *data)
{
        u8 *p = (char *)data;

        if (strset == ETH_SS_STATS)
                p = hclgevf_tqps_get_strings(handle, p);
}

static void hclgevf_get_stats(struct hnae3_handle *handle, u64 *data)
{
        hclgevf_tqps_get_stats(handle, data);
}

static int hclgevf_get_tc_info(struct hclgevf_dev *hdev)
{
        u8 resp_msg;
        int status;

        status = hclgevf_send_mbx_msg(hdev, HCLGE_MBX_GET_TCINFO, 0, NULL, 0,
                                      true, &resp_msg, sizeof(u8));
        if (status) {
                dev_err(&hdev->pdev->dev,
                        "VF request to get TC info from PF failed %d",
                        status);
                return status;
        }

        hdev->hw_tc_map = resp_msg;

        return 0;
}

static int hclge_get_queue_info(struct hclgevf_dev *hdev)
{
#define HCLGEVF_TQPS_RSS_INFO_LEN       8
        u8 resp_msg[HCLGEVF_TQPS_RSS_INFO_LEN];
        int status;

        status = hclgevf_send_mbx_msg(hdev, HCLGE_MBX_GET_QINFO, 0, NULL, 0,
                                      true, resp_msg,
                                      HCLGEVF_TQPS_RSS_INFO_LEN);
        if (status) {
                dev_err(&hdev->pdev->dev,
                        "VF request to get tqp info from PF failed %d",
                        status);
                return status;
        }

        memcpy(&hdev->num_tqps, &resp_msg[0], sizeof(u16));
        memcpy(&hdev->rss_size_max, &resp_msg[2], sizeof(u16));
        memcpy(&hdev->num_desc, &resp_msg[4], sizeof(u16));
        memcpy(&hdev->rx_buf_len, &resp_msg[6], sizeof(u16));

        return 0;
}

static int hclgevf_alloc_tqps(struct hclgevf_dev *hdev)
{
        struct hclgevf_tqp *tqp;
        int i;

        /* if this is on going reset then we need to re-allocate the TPQs
         * since we cannot assume we would get same number of TPQs back from PF
         */
        if (hclgevf_dev_ongoing_reset(hdev))
                devm_kfree(&hdev->pdev->dev, hdev->htqp);

        hdev->htqp = devm_kcalloc(&hdev->pdev->dev, hdev->num_tqps,
                                  sizeof(struct hclgevf_tqp), GFP_KERNEL);
        if (!hdev->htqp)
                return -ENOMEM;

        tqp = hdev->htqp;

        for (i = 0; i < hdev->num_tqps; i++) {
                tqp->dev = &hdev->pdev->dev;
                tqp->index = i;

                tqp->q.ae_algo = &ae_algovf;
                tqp->q.buf_size = hdev->rx_buf_len;
                tqp->q.desc_num = hdev->num_desc;
                tqp->q.io_base = hdev->hw.io_base + HCLGEVF_TQP_REG_OFFSET +
                        i * HCLGEVF_TQP_REG_SIZE;

                tqp++;
        }

        return 0;
}

static int hclgevf_knic_setup(struct hclgevf_dev *hdev)
{
        struct hnae3_handle *nic = &hdev->nic;
        struct hnae3_knic_private_info *kinfo;
        u16 new_tqps = hdev->num_tqps;
        int i;

        kinfo = &nic->kinfo;
        kinfo->num_tc = 0;
        kinfo->num_desc = hdev->num_desc;
        kinfo->rx_buf_len = hdev->rx_buf_len;
        for (i = 0; i < HCLGEVF_MAX_TC_NUM; i++)
                if (hdev->hw_tc_map & BIT(i))
                        kinfo->num_tc++;

        kinfo->rss_size
                = min_t(u16, hdev->rss_size_max, new_tqps / kinfo->num_tc);
        new_tqps = kinfo->rss_size * kinfo->num_tc;
        kinfo->num_tqps = min(new_tqps, hdev->num_tqps);

        /* if this is on going reset then we need to re-allocate the hnae queues
         * as well since number of TPQs from PF might have changed.
         */
        if (hclgevf_dev_ongoing_reset(hdev))
                devm_kfree(&hdev->pdev->dev, kinfo->tqp);

        kinfo->tqp = devm_kcalloc(&hdev->pdev->dev, kinfo->num_tqps,
                                  sizeof(struct hnae3_queue *), GFP_KERNEL);
        if (!kinfo->tqp)
                return -ENOMEM;

        for (i = 0; i < kinfo->num_tqps; i++) {
                hdev->htqp[i].q.handle = &hdev->nic;
                hdev->htqp[i].q.tqp_index = i;
                kinfo->tqp[i] = &hdev->htqp[i].q;
        }

        return 0;
}

static void hclgevf_request_link_info(struct hclgevf_dev *hdev)
{
        int status;
        u8 resp_msg;

        status = hclgevf_send_mbx_msg(hdev, HCLGE_MBX_GET_LINK_STATUS, 0, NULL,
                                      0, false, &resp_msg, sizeof(u8));
        if (status)
                dev_err(&hdev->pdev->dev,
                        "VF failed to fetch link status(%d) from PF", status);
}

void hclgevf_update_link_status(struct hclgevf_dev *hdev, int link_state)
{
        struct hnae3_handle *handle = &hdev->nic;
        struct hnae3_client *client;

        client = handle->client;

        if (link_state != hdev->hw.mac.link) {
                client->ops->link_status_change(handle, !!link_state);
                hdev->hw.mac.link = link_state;
        }
}

static int hclgevf_set_handle_info(struct hclgevf_dev *hdev)
{
        struct hnae3_handle *nic = &hdev->nic;
        int ret;

        nic->ae_algo = &ae_algovf;
        nic->pdev = hdev->pdev;
        nic->numa_node_mask = hdev->numa_node_mask;
        nic->flags |= HNAE3_SUPPORT_VF;

        if (hdev->ae_dev->dev_type != HNAE3_DEV_KNIC) {
                dev_err(&hdev->pdev->dev, "unsupported device type %d\n",
                        hdev->ae_dev->dev_type);
                return -EINVAL;
        }

        ret = hclgevf_knic_setup(hdev);
        if (ret)
                dev_err(&hdev->pdev->dev, "VF knic setup failed %d\n",
                        ret);
        return ret;
}

static void hclgevf_free_vector(struct hclgevf_dev *hdev, int vector_id)
{
        hdev->vector_status[vector_id] = HCLGEVF_INVALID_VPORT;
        hdev->num_msi_left += 1;
        hdev->num_msi_used -= 1;
}

static int hclgevf_get_vector(struct hnae3_handle *handle, u16 vector_num,
                              struct hnae3_vector_info *vector_info)
{
        struct hclgevf_dev *hdev = hclgevf_ae_get_hdev(handle);
        struct hnae3_vector_info *vector = vector_info;
        int alloc = 0;
        int i, j;

        vector_num = min(hdev->num_msi_left, vector_num);

        for (j = 0; j < vector_num; j++) {
                for (i = HCLGEVF_MISC_VECTOR_NUM + 1; i < hdev->num_msi; i++) {
                        if (hdev->vector_status[i] == HCLGEVF_INVALID_VPORT) {
                                vector->vector = pci_irq_vector(hdev->pdev, i);
                                vector->io_addr = hdev->hw.io_base +
                                        HCLGEVF_VECTOR_REG_BASE +
                                        (i - 1) * HCLGEVF_VECTOR_REG_OFFSET;
                                hdev->vector_status[i] = 0;
                                hdev->vector_irq[i] = vector->vector;

                                vector++;
                                alloc++;

                                break;
                        }
                }
        }
        hdev->num_msi_left -= alloc;
        hdev->num_msi_used += alloc;

        return alloc;
}

static int hclgevf_get_vector_index(struct hclgevf_dev *hdev, int vector)
{
        int i;

        for (i = 0; i < hdev->num_msi; i++)
                if (vector == hdev->vector_irq[i])
                        return i;

        return -EINVAL;
}

static u32 hclgevf_get_rss_key_size(struct hnae3_handle *handle)
{
        return HCLGEVF_RSS_KEY_SIZE;
}

static u32 hclgevf_get_rss_indir_size(struct hnae3_handle *handle)
{
        return HCLGEVF_RSS_IND_TBL_SIZE;
}

static int hclgevf_set_rss_indir_table(struct hclgevf_dev *hdev)
{
        const u8 *indir = hdev->rss_cfg.rss_indirection_tbl;
        struct hclgevf_rss_indirection_table_cmd *req;
        struct hclgevf_desc desc;
        int status;
        int i, j;

        req = (struct hclgevf_rss_indirection_table_cmd *)desc.data;

        for (i = 0; i < HCLGEVF_RSS_CFG_TBL_NUM; i++) {
                hclgevf_cmd_setup_basic_desc(&desc, HCLGEVF_OPC_RSS_INDIR_TABLE,
                                             false);
                req->start_table_index = i * HCLGEVF_RSS_CFG_TBL_SIZE;
                req->rss_set_bitmap = HCLGEVF_RSS_SET_BITMAP_MSK;
                for (j = 0; j < HCLGEVF_RSS_CFG_TBL_SIZE; j++)
                        req->rss_result[j] =
                                indir[i * HCLGEVF_RSS_CFG_TBL_SIZE + j];

                status = hclgevf_cmd_send(&hdev->hw, &desc, 1);
                if (status) {
                        dev_err(&hdev->pdev->dev,
                                "VF failed(=%d) to set RSS indirection table\n",
                                status);
                        return status;
                }
        }

        return 0;
}

static int hclgevf_set_rss_tc_mode(struct hclgevf_dev *hdev,  u16 rss_size)
{
        struct hclgevf_rss_tc_mode_cmd *req;
        u16 tc_offset[HCLGEVF_MAX_TC_NUM];
        u16 tc_valid[HCLGEVF_MAX_TC_NUM];
        u16 tc_size[HCLGEVF_MAX_TC_NUM];
        struct hclgevf_desc desc;
        u16 roundup_size;
        int status;
        int i;

        req = (struct hclgevf_rss_tc_mode_cmd *)desc.data;

        roundup_size = roundup_pow_of_two(rss_size);
        roundup_size = ilog2(roundup_size);

        for (i = 0; i < HCLGEVF_MAX_TC_NUM; i++) {
                tc_valid[i] = !!(hdev->hw_tc_map & BIT(i));
                tc_size[i] = roundup_size;
                tc_offset[i] = rss_size * i;
        }

        hclgevf_cmd_setup_basic_desc(&desc, HCLGEVF_OPC_RSS_TC_MODE, false);
        for (i = 0; i < HCLGEVF_MAX_TC_NUM; i++) {
                hnae_set_bit(req->rss_tc_mode[i], HCLGEVF_RSS_TC_VALID_B,
                             (tc_valid[i] & 0x1));
                hnae_set_field(req->rss_tc_mode[i], HCLGEVF_RSS_TC_SIZE_M,
                               HCLGEVF_RSS_TC_SIZE_S, tc_size[i]);
                hnae_set_field(req->rss_tc_mode[i], HCLGEVF_RSS_TC_OFFSET_M,
                               HCLGEVF_RSS_TC_OFFSET_S, tc_offset[i]);
        }
        status = hclgevf_cmd_send(&hdev->hw, &desc, 1);
        if (status)
                dev_err(&hdev->pdev->dev,
                        "VF failed(=%d) to set rss tc mode\n", status);

        return status;
}

static int hclgevf_get_rss_hw_cfg(struct hnae3_handle *handle, u8 *hash,
                                  u8 *key)
{
        struct hclgevf_dev *hdev = hclgevf_ae_get_hdev(handle);
        struct hclgevf_rss_config_cmd *req;
        int lkup_times = key ? 3 : 1;
        struct hclgevf_desc desc;
        int key_offset;
        int key_size;
        int status;

        req = (struct hclgevf_rss_config_cmd *)desc.data;
        lkup_times = (lkup_times == 3) ? 3 : ((hash) ? 1 : 0);

        for (key_offset = 0; key_offset < lkup_times; key_offset++) {
                hclgevf_cmd_setup_basic_desc(&desc,
                                             HCLGEVF_OPC_RSS_GENERIC_CONFIG,
                                             true);
                req->hash_config |= (key_offset << HCLGEVF_RSS_HASH_KEY_OFFSET);

                status = hclgevf_cmd_send(&hdev->hw, &desc, 1);
                if (status) {
                        dev_err(&hdev->pdev->dev,
                                "failed to get hardware RSS cfg, status = %d\n",
                                status);
                        return status;
                }

                if (key_offset == 2)
                        key_size =
                        HCLGEVF_RSS_KEY_SIZE - HCLGEVF_RSS_HASH_KEY_NUM * 2;
                else
                        key_size = HCLGEVF_RSS_HASH_KEY_NUM;

                if (key)
                        memcpy(key + key_offset * HCLGEVF_RSS_HASH_KEY_NUM,
                               req->hash_key,
                               key_size);
        }

        if (hash) {
                if ((req->hash_config & 0xf) == HCLGEVF_RSS_HASH_ALGO_TOEPLITZ)
                        *hash = ETH_RSS_HASH_TOP;
                else
                        *hash = ETH_RSS_HASH_UNKNOWN;
        }

        return 0;
}

static int hclgevf_get_rss(struct hnae3_handle *handle, u32 *indir, u8 *key,
                           u8 *hfunc)
{
        struct hclgevf_dev *hdev = hclgevf_ae_get_hdev(handle);
        struct hclgevf_rss_cfg *rss_cfg = &hdev->rss_cfg;
        int i;

        if (indir)
                for (i = 0; i < HCLGEVF_RSS_IND_TBL_SIZE; i++)
                        indir[i] = rss_cfg->rss_indirection_tbl[i];

        return hclgevf_get_rss_hw_cfg(handle, hfunc, key);
}

static int hclgevf_set_rss(struct hnae3_handle *handle, const u32 *indir,
                           const  u8 *key, const  u8 hfunc)
{
        struct hclgevf_dev *hdev = hclgevf_ae_get_hdev(handle);
        struct hclgevf_rss_cfg *rss_cfg = &hdev->rss_cfg;
        int i;

        /* update the shadow RSS table with user specified qids */
        for (i = 0; i < HCLGEVF_RSS_IND_TBL_SIZE; i++)
                rss_cfg->rss_indirection_tbl[i] = indir[i];

        /* update the hardware */
        return hclgevf_set_rss_indir_table(hdev);
}

static int hclgevf_get_tc_size(struct hnae3_handle *handle)
{
        struct hclgevf_dev *hdev = hclgevf_ae_get_hdev(handle);
        struct hclgevf_rss_cfg *rss_cfg = &hdev->rss_cfg;

        return rss_cfg->rss_size;
}

static int hclgevf_bind_ring_to_vector(struct hnae3_handle *handle, bool en,
                                       int vector,
                                       struct hnae3_ring_chain_node *ring_chain)
{
        struct hclgevf_dev *hdev = hclgevf_ae_get_hdev(handle);
        struct hnae3_ring_chain_node *node;
        struct hclge_mbx_vf_to_pf_cmd *req;
        struct hclgevf_desc desc;
        int i = 0, vector_id;
        int status;
        u8 type;

        req = (struct hclge_mbx_vf_to_pf_cmd *)desc.data;
        vector_id = hclgevf_get_vector_index(hdev, vector);
        if (vector_id < 0) {
                dev_err(&handle->pdev->dev,
                        "Get vector index fail. ret =%d\n", vector_id);
                return vector_id;
        }

        for (node = ring_chain; node; node = node->next) {
                int idx_offset = HCLGE_MBX_RING_MAP_BASIC_MSG_NUM +
                                        HCLGE_MBX_RING_NODE_VARIABLE_NUM * i;

                if (i == 0) {
                        hclgevf_cmd_setup_basic_desc(&desc,
                                                     HCLGEVF_OPC_MBX_VF_TO_PF,
                                                     false);
                        type = en ?
                                HCLGE_MBX_MAP_RING_TO_VECTOR :
                                HCLGE_MBX_UNMAP_RING_TO_VECTOR;
                        req->msg[0] = type;
                        req->msg[1] = vector_id;
                }

                req->msg[idx_offset] =
                                hnae_get_bit(node->flag, HNAE3_RING_TYPE_B);
                req->msg[idx_offset + 1] = node->tqp_index;
                req->msg[idx_offset + 2] = hnae_get_field(node->int_gl_idx,
                                                          HNAE3_RING_GL_IDX_M,
                                                          HNAE3_RING_GL_IDX_S);

                i++;
                if ((i == (HCLGE_MBX_VF_MSG_DATA_NUM -
                     HCLGE_MBX_RING_MAP_BASIC_MSG_NUM) /
                     HCLGE_MBX_RING_NODE_VARIABLE_NUM) ||
                    !node->next) {
                        req->msg[2] = i;

                        status = hclgevf_cmd_send(&hdev->hw, &desc, 1);
                        if (status) {
                                dev_err(&hdev->pdev->dev,
                                        "Map TQP fail, status is %d.\n",
                                        status);
                                return status;
                        }
                        i = 0;
                        hclgevf_cmd_setup_basic_desc(&desc,
                                                     HCLGEVF_OPC_MBX_VF_TO_PF,
                                                     false);
                        req->msg[0] = type;
                        req->msg[1] = vector_id;
                }
        }

        return 0;
}

static int hclgevf_map_ring_to_vector(struct hnae3_handle *handle, int vector,
                                      struct hnae3_ring_chain_node *ring_chain)
{
        return hclgevf_bind_ring_to_vector(handle, true, vector, ring_chain);
}

static int hclgevf_unmap_ring_from_vector(
                                struct hnae3_handle *handle,
                                int vector,
                                struct hnae3_ring_chain_node *ring_chain)
{
        struct hclgevf_dev *hdev = hclgevf_ae_get_hdev(handle);
        int ret, vector_id;

        vector_id = hclgevf_get_vector_index(hdev, vector);
        if (vector_id < 0) {
                dev_err(&handle->pdev->dev,
                        "Get vector index fail. ret =%d\n", vector_id);
                return vector_id;
        }

        ret = hclgevf_bind_ring_to_vector(handle, false, vector, ring_chain);
        if (ret)
                dev_err(&handle->pdev->dev,
                        "Unmap ring from vector fail. vector=%d, ret =%d\n",
                        vector_id,
                        ret);

        return ret;
}

static int hclgevf_put_vector(struct hnae3_handle *handle, int vector)
{
        struct hclgevf_dev *hdev = hclgevf_ae_get_hdev(handle);

        hclgevf_free_vector(hdev, vector);

        return 0;
}

static int hclgevf_cmd_set_promisc_mode(struct hclgevf_dev *hdev,
                                        bool en_uc_pmc, bool en_mc_pmc)
{
        struct hclge_mbx_vf_to_pf_cmd *req;
        struct hclgevf_desc desc;
        int status;

        req = (struct hclge_mbx_vf_to_pf_cmd *)desc.data;

        hclgevf_cmd_setup_basic_desc(&desc, HCLGEVF_OPC_MBX_VF_TO_PF, false);
        req->msg[0] = HCLGE_MBX_SET_PROMISC_MODE;
        req->msg[1] = en_uc_pmc ? 1 : 0;
        req->msg[2] = en_mc_pmc ? 1 : 0;

        status = hclgevf_cmd_send(&hdev->hw, &desc, 1);
        if (status)
                dev_err(&hdev->pdev->dev,
                        "Set promisc mode fail, status is %d.\n", status);

        return status;
}

static void hclgevf_set_promisc_mode(struct hnae3_handle *handle,
                                     bool en_uc_pmc, bool en_mc_pmc)
{
        struct hclgevf_dev *hdev = hclgevf_ae_get_hdev(handle);

        hclgevf_cmd_set_promisc_mode(hdev, en_uc_pmc, en_mc_pmc);
}

static int hclgevf_tqp_enable(struct hclgevf_dev *hdev, int tqp_id,
                              int stream_id, bool enable)
{
        struct hclgevf_cfg_com_tqp_queue_cmd *req;
        struct hclgevf_desc desc;
        int status;

        req = (struct hclgevf_cfg_com_tqp_queue_cmd *)desc.data;

        hclgevf_cmd_setup_basic_desc(&desc, HCLGEVF_OPC_CFG_COM_TQP_QUEUE,
                                     false);
        req->tqp_id = cpu_to_le16(tqp_id & HCLGEVF_RING_ID_MASK);
        req->stream_id = cpu_to_le16(stream_id);
        req->enable |= enable << HCLGEVF_TQP_ENABLE_B;

        status = hclgevf_cmd_send(&hdev->hw, &desc, 1);
        if (status)
                dev_err(&hdev->pdev->dev,
                        "TQP enable fail, status =%d.\n", status);

        return status;
}

static int hclgevf_get_queue_id(struct hnae3_queue *queue)
{
        struct hclgevf_tqp *tqp = container_of(queue, struct hclgevf_tqp, q);

        return tqp->index;
}

static void hclgevf_reset_tqp_stats(struct hnae3_handle *handle)
{
        struct hclgevf_dev *hdev = hclgevf_ae_get_hdev(handle);
        struct hnae3_queue *queue;
        struct hclgevf_tqp *tqp;
        int i;

        for (i = 0; i < hdev->num_tqps; i++) {
                queue = handle->kinfo.tqp[i];
                tqp = container_of(queue, struct hclgevf_tqp, q);
                memset(&tqp->tqp_stats, 0, sizeof(tqp->tqp_stats));
        }
}

static int hclgevf_cfg_func_mta_type(struct hclgevf_dev *hdev)
{
        u8 resp_msg = HCLGEVF_MTA_TYPE_SEL_MAX;
        int ret;

        ret = hclgevf_send_mbx_msg(hdev, HCLGE_MBX_SET_MULTICAST,
                                   HCLGE_MBX_MAC_VLAN_MTA_TYPE_READ,
                                   NULL, 0, true, &resp_msg, sizeof(u8));

        if (ret) {
                dev_err(&hdev->pdev->dev,
                        "Read mta type fail, ret=%d.\n", ret);
                return ret;
        }

        if (resp_msg > HCLGEVF_MTA_TYPE_SEL_MAX) {
                dev_err(&hdev->pdev->dev,
                        "Read mta type invalid, resp=%d.\n", resp_msg);
                return -EINVAL;
        }

        hdev->mta_mac_sel_type = resp_msg;

        return 0;
}

static u16 hclgevf_get_mac_addr_to_mta_index(struct hclgevf_dev *hdev,
                                             const u8 *addr)
{
        u32 rsh = HCLGEVF_MTA_TYPE_SEL_MAX - hdev->mta_mac_sel_type;
        u16 high_val = addr[1] | (addr[0] << 8);

        return (high_val >> rsh) & 0xfff;
}

static int hclgevf_do_update_mta_status(struct hclgevf_dev *hdev,
                                        unsigned long *status)
{
#define HCLGEVF_MTA_STATUS_MSG_SIZE 13
#define HCLGEVF_MTA_STATUS_MSG_BITS \
                        (HCLGEVF_MTA_STATUS_MSG_SIZE * BITS_PER_BYTE)
#define HCLGEVF_MTA_STATUS_MSG_END_BITS \
                        (HCLGEVF_MTA_TBL_SIZE % HCLGEVF_MTA_STATUS_MSG_BITS)
        u16 tbl_cnt;
        u16 tbl_idx;
        u8 msg_cnt;
        u8 msg_idx;
        int ret;

        msg_cnt = DIV_ROUND_UP(HCLGEVF_MTA_TBL_SIZE,
                               HCLGEVF_MTA_STATUS_MSG_BITS);
        tbl_idx = 0;
        msg_idx = 0;
        while (msg_cnt--) {
                u8 msg[HCLGEVF_MTA_STATUS_MSG_SIZE + 1];
                u8 *p = &msg[1];
                u8 msg_ofs;
                u8 msg_bit;

                memset(msg, 0, sizeof(msg));

                /* set index field */
                msg[0] = 0x7F & msg_idx;

                /* set end flag field */
                if (msg_cnt == 0) {
                        msg[0] |= 0x80;
                        tbl_cnt = HCLGEVF_MTA_STATUS_MSG_END_BITS;
                } else {
                        tbl_cnt = HCLGEVF_MTA_STATUS_MSG_BITS;
                }

                /* set status field */
                msg_ofs = 0;
                msg_bit = 0;
                while (tbl_cnt--) {
                        if (test_bit(tbl_idx, status))
                                p[msg_ofs] |= BIT(msg_bit);

                        tbl_idx++;

                        msg_bit++;
                        if (msg_bit == BITS_PER_BYTE) {
                                msg_bit = 0;
                                msg_ofs++;
                        }
                }

                ret = hclgevf_send_mbx_msg(hdev, HCLGE_MBX_SET_MULTICAST,
                                           HCLGE_MBX_MAC_VLAN_MTA_STATUS_UPDATE,
                                           msg, sizeof(msg), false, NULL, 0);
                if (ret)
                        break;

                msg_idx++;
        }

        return ret;
}

static int hclgevf_update_mta_status(struct hnae3_handle *handle)
{
        unsigned long mta_status[BITS_TO_LONGS(HCLGEVF_MTA_TBL_SIZE)];
        struct hclgevf_dev *hdev = hclgevf_ae_get_hdev(handle);
        struct net_device *netdev = hdev->nic.kinfo.netdev;
        struct netdev_hw_addr *ha;
        u16 tbl_idx;

        /* clear status */
        memset(mta_status, 0, sizeof(mta_status));

        /* update status from mc addr list */
        netdev_for_each_mc_addr(ha, netdev) {
                tbl_idx = hclgevf_get_mac_addr_to_mta_index(hdev, ha->addr);
                set_bit(tbl_idx, mta_status);
        }

        return hclgevf_do_update_mta_status(hdev, mta_status);
}

static void hclgevf_get_mac_addr(struct hnae3_handle *handle, u8 *p)
{
        struct hclgevf_dev *hdev = hclgevf_ae_get_hdev(handle);

        ether_addr_copy(p, hdev->hw.mac.mac_addr);
}

static int hclgevf_set_mac_addr(struct hnae3_handle *handle, void *p,
                                bool is_first)
{
        struct hclgevf_dev *hdev = hclgevf_ae_get_hdev(handle);
        u8 *old_mac_addr = (u8 *)hdev->hw.mac.mac_addr;
        u8 *new_mac_addr = (u8 *)p;
        u8 msg_data[ETH_ALEN * 2];
        u16 subcode;
        int status;

        ether_addr_copy(msg_data, new_mac_addr);
        ether_addr_copy(&msg_data[ETH_ALEN], old_mac_addr);

        subcode = is_first ? HCLGE_MBX_MAC_VLAN_UC_ADD :
                        HCLGE_MBX_MAC_VLAN_UC_MODIFY;

        status = hclgevf_send_mbx_msg(hdev, HCLGE_MBX_SET_UNICAST,
                                      subcode, msg_data, ETH_ALEN * 2,
                                      true, NULL, 0);
        if (!status)
                ether_addr_copy(hdev->hw.mac.mac_addr, new_mac_addr);

        return status;
}

static int hclgevf_add_uc_addr(struct hnae3_handle *handle,
                               const unsigned char *addr)
{
        struct hclgevf_dev *hdev = hclgevf_ae_get_hdev(handle);

        return hclgevf_send_mbx_msg(hdev, HCLGE_MBX_SET_UNICAST,
                                    HCLGE_MBX_MAC_VLAN_UC_ADD,
                                    addr, ETH_ALEN, false, NULL, 0);
}

static int hclgevf_rm_uc_addr(struct hnae3_handle *handle,
                              const unsigned char *addr)
{
        struct hclgevf_dev *hdev = hclgevf_ae_get_hdev(handle);

        return hclgevf_send_mbx_msg(hdev, HCLGE_MBX_SET_UNICAST,
                                    HCLGE_MBX_MAC_VLAN_UC_REMOVE,
                                    addr, ETH_ALEN, false, NULL, 0);
}

static int hclgevf_add_mc_addr(struct hnae3_handle *handle,
                               const unsigned char *addr)
{
        struct hclgevf_dev *hdev = hclgevf_ae_get_hdev(handle);

        return hclgevf_send_mbx_msg(hdev, HCLGE_MBX_SET_MULTICAST,
                                    HCLGE_MBX_MAC_VLAN_MC_ADD,
                                    addr, ETH_ALEN, false, NULL, 0);
}

static int hclgevf_rm_mc_addr(struct hnae3_handle *handle,
                              const unsigned char *addr)
{
        struct hclgevf_dev *hdev = hclgevf_ae_get_hdev(handle);

        return hclgevf_send_mbx_msg(hdev, HCLGE_MBX_SET_MULTICAST,
                                    HCLGE_MBX_MAC_VLAN_MC_REMOVE,
                                    addr, ETH_ALEN, false, NULL, 0);
}

static int hclgevf_set_vlan_filter(struct hnae3_handle *handle,
                                   __be16 proto, u16 vlan_id,
                                   bool is_kill)
{
#define HCLGEVF_VLAN_MBX_MSG_LEN 5
        struct hclgevf_dev *hdev = hclgevf_ae_get_hdev(handle);
        u8 msg_data[HCLGEVF_VLAN_MBX_MSG_LEN];

        if (vlan_id > 4095)
                return -EINVAL;

        if (proto != htons(ETH_P_8021Q))
                return -EPROTONOSUPPORT;

        msg_data[0] = is_kill;
        memcpy(&msg_data[1], &vlan_id, sizeof(vlan_id));
        memcpy(&msg_data[3], &proto, sizeof(proto));
        return hclgevf_send_mbx_msg(hdev, HCLGE_MBX_SET_VLAN,
                                    HCLGE_MBX_VLAN_FILTER, msg_data,
                                    HCLGEVF_VLAN_MBX_MSG_LEN, false, NULL, 0);
}

static int hclgevf_en_hw_strip_rxvtag(struct hnae3_handle *handle, bool enable)
{
        struct hclgevf_dev *hdev = hclgevf_ae_get_hdev(handle);
        u8 msg_data;

        msg_data = enable ? 1 : 0;
        return hclgevf_send_mbx_msg(hdev, HCLGE_MBX_SET_VLAN,
                                    HCLGE_MBX_VLAN_RX_OFF_CFG, &msg_data,
                                    1, false, NULL, 0);
}

static void hclgevf_reset_tqp(struct hnae3_handle *handle, u16 queue_id)
{
        struct hclgevf_dev *hdev = hclgevf_ae_get_hdev(handle);
        u8 msg_data[2];
        int ret;

        memcpy(&msg_data[0], &queue_id, sizeof(queue_id));

        /* disable vf queue before send queue reset msg to PF */
        ret = hclgevf_tqp_enable(hdev, queue_id, 0, false);
        if (ret)
                return;

        hclgevf_send_mbx_msg(hdev, HCLGE_MBX_QUEUE_RESET, 0, msg_data,
                             2, true, NULL, 0);
}

static int hclgevf_notify_client(struct hclgevf_dev *hdev,
                                 enum hnae3_reset_notify_type type)
{
        struct hnae3_client *client = hdev->nic_client;
        struct hnae3_handle *handle = &hdev->nic;

        if (!client->ops->reset_notify)
                return -EOPNOTSUPP;

        return client->ops->reset_notify(handle, type);
}

static int hclgevf_reset_wait(struct hclgevf_dev *hdev)
{
#define HCLGEVF_RESET_WAIT_MS   500
#define HCLGEVF_RESET_WAIT_CNT  20
        u32 val, cnt = 0;

        /* wait to check the hardware reset completion status */
        val = hclgevf_read_dev(&hdev->hw, HCLGEVF_FUN_RST_ING);
        while (hnae_get_bit(val, HCLGEVF_FUN_RST_ING_B) &&
                            (cnt < HCLGEVF_RESET_WAIT_CNT)) {
                msleep(HCLGEVF_RESET_WAIT_MS);
                val = hclgevf_read_dev(&hdev->hw, HCLGEVF_FUN_RST_ING);
                cnt++;
        }

        /* hardware completion status should be available by this time */

        if (cnt >= HCLGEVF_RESET_WAIT_CNT) {
                dev_warn(&hdev->pdev->dev,
                         "could'nt get reset done status from h/w, timeout!\n");
                return -EBUSY;
        }

        /* we will wait a bit more to let reset of the stack to complete. This
         * might happen in case reset assertion was made by PF. Yes, this also
         * means we might end up waiting bit more even for VF reset.
         */
        msleep(5000);

        return 0;
}

static int hclgevf_reset_stack(struct hclgevf_dev *hdev)
{
        int ret;

        /* uninitialize the nic client */
        hclgevf_notify_client(hdev, HNAE3_UNINIT_CLIENT);

        /* re-initialize the hclge device */
        ret = hclgevf_init_hdev(hdev);
        if (ret) {
                dev_err(&hdev->pdev->dev,
                        "hclge device re-init failed, VF is disabled!\n");
                return ret;
        }

        /* bring up the nic client again */
        hclgevf_notify_client(hdev, HNAE3_INIT_CLIENT);

        return 0;
}

static int hclgevf_reset(struct hclgevf_dev *hdev)
{
        int ret;

        rtnl_lock();

        /* bring down the nic to stop any ongoing TX/RX */
        hclgevf_notify_client(hdev, HNAE3_DOWN_CLIENT);

        /* check if VF could successfully fetch the hardware reset completion
         * status from the hardware
         */
        ret = hclgevf_reset_wait(hdev);
        if (ret) {
                /* can't do much in this situation, will disable VF */
                dev_err(&hdev->pdev->dev,
                        "VF failed(=%d) to fetch H/W reset completion status\n",
                        ret);

                dev_warn(&hdev->pdev->dev, "VF reset failed, disabling VF!\n");
                hclgevf_notify_client(hdev, HNAE3_UNINIT_CLIENT);

                rtnl_unlock();
                return ret;
        }

        /* now, re-initialize the nic client and ae device*/
        ret = hclgevf_reset_stack(hdev);
        if (ret)
                dev_err(&hdev->pdev->dev, "failed to reset VF stack\n");

        /* bring up the nic to enable TX/RX again */
        hclgevf_notify_client(hdev, HNAE3_UP_CLIENT);

        rtnl_unlock();

        return ret;
}

static int hclgevf_do_reset(struct hclgevf_dev *hdev)
{
        int status;
        u8 respmsg;

        status = hclgevf_send_mbx_msg(hdev, HCLGE_MBX_RESET, 0, NULL,
                                      0, false, &respmsg, sizeof(u8));
        if (status)
                dev_err(&hdev->pdev->dev,
                        "VF reset request to PF failed(=%d)\n", status);

        return status;
}

static void hclgevf_reset_event(struct hnae3_handle *handle)
{
        struct hclgevf_dev *hdev = hclgevf_ae_get_hdev(handle);

        dev_info(&hdev->pdev->dev, "received reset request from VF enet\n");

        handle->reset_level = HNAE3_VF_RESET;

        /* reset of this VF requested */
        set_bit(HCLGEVF_RESET_REQUESTED, &hdev->reset_state);
        hclgevf_reset_task_schedule(hdev);

        handle->last_reset_time = jiffies;
}

static u32 hclgevf_get_fw_version(struct hnae3_handle *handle)
{
        struct hclgevf_dev *hdev = hclgevf_ae_get_hdev(handle);

        return hdev->fw_version;
}

static void hclgevf_get_misc_vector(struct hclgevf_dev *hdev)
{
        struct hclgevf_misc_vector *vector = &hdev->misc_vector;

        vector->vector_irq = pci_irq_vector(hdev->pdev,
                                            HCLGEVF_MISC_VECTOR_NUM);
        vector->addr = hdev->hw.io_base + HCLGEVF_MISC_VECTOR_REG_BASE;
        /* vector status always valid for Vector 0 */
        hdev->vector_status[HCLGEVF_MISC_VECTOR_NUM] = 0;
        hdev->vector_irq[HCLGEVF_MISC_VECTOR_NUM] = vector->vector_irq;

        hdev->num_msi_left -= 1;
        hdev->num_msi_used += 1;
}

void hclgevf_reset_task_schedule(struct hclgevf_dev *hdev)
{
        if (!test_bit(HCLGEVF_STATE_RST_SERVICE_SCHED, &hdev->state) &&
            !test_bit(HCLGEVF_STATE_RST_HANDLING, &hdev->state)) {
                set_bit(HCLGEVF_STATE_RST_SERVICE_SCHED, &hdev->state);
                schedule_work(&hdev->rst_service_task);
        }
}

void hclgevf_mbx_task_schedule(struct hclgevf_dev *hdev)
{
        if (!test_bit(HCLGEVF_STATE_MBX_SERVICE_SCHED, &hdev->state) &&
            !test_bit(HCLGEVF_STATE_MBX_HANDLING, &hdev->state)) {
                set_bit(HCLGEVF_STATE_MBX_SERVICE_SCHED, &hdev->state);
                schedule_work(&hdev->mbx_service_task);
        }
}

static void hclgevf_task_schedule(struct hclgevf_dev *hdev)
{
        if (!test_bit(HCLGEVF_STATE_DOWN, &hdev->state)  &&
            !test_and_set_bit(HCLGEVF_STATE_SERVICE_SCHED, &hdev->state))
                schedule_work(&hdev->service_task);
}

static void hclgevf_deferred_task_schedule(struct hclgevf_dev *hdev)
{
        /* if we have any pending mailbox event then schedule the mbx task */
        if (hdev->mbx_event_pending)
                hclgevf_mbx_task_schedule(hdev);

        if (test_bit(HCLGEVF_RESET_PENDING, &hdev->reset_state))
                hclgevf_reset_task_schedule(hdev);
}

static void hclgevf_service_timer(struct timer_list *t)
{
        struct hclgevf_dev *hdev = from_timer(hdev, t, service_timer);

        mod_timer(&hdev->service_timer, jiffies + 5 * HZ);

        hclgevf_task_schedule(hdev);
}

static void hclgevf_reset_service_task(struct work_struct *work)
{
        struct hclgevf_dev *hdev =
                container_of(work, struct hclgevf_dev, rst_service_task);
        int ret;

        if (test_and_set_bit(HCLGEVF_STATE_RST_HANDLING, &hdev->state))
                return;

        clear_bit(HCLGEVF_STATE_RST_SERVICE_SCHED, &hdev->state);

        if (test_and_clear_bit(HCLGEVF_RESET_PENDING,
                               &hdev->reset_state)) {
                /* PF has initmated that it is about to reset the hardware.
                 * We now have to poll & check if harware has actually completed
                 * the reset sequence. On hardware reset completion, VF needs to
                 * reset the client and ae device.
                 */
                hdev->reset_attempts = 0;

                ret = hclgevf_reset(hdev);
                if (ret)
                        dev_err(&hdev->pdev->dev, "VF stack reset failed.\n");
        } else if (test_and_clear_bit(HCLGEVF_RESET_REQUESTED,
                                      &hdev->reset_state)) {
                /* we could be here when either of below happens:
                 * 1. reset was initiated due to watchdog timeout due to
                 *    a. IMP was earlier reset and our TX got choked down and
                 *       which resulted in watchdog reacting and inducing VF
                 *       reset. This also means our cmdq would be unreliable.
                 *    b. problem in TX due to other lower layer(example link
                 *       layer not functioning properly etc.)
                 * 2. VF reset might have been initiated due to some config
                 *    change.
                 *
                 * NOTE: Theres no clear way to detect above cases than to react
                 * to the response of PF for this reset request. PF will ack the
                 * 1b and 2. cases but we will not get any intimation about 1a
                 * from PF as cmdq would be in unreliable state i.e. mailbox
                 * communication between PF and VF would be broken.
                 */

                /* if we are never geting into pending state it means either:
                 * 1. PF is not receiving our request which could be due to IMP
                 *    reset
                 * 2. PF is screwed
                 * We cannot do much for 2. but to check first we can try reset
                 * our PCIe + stack and see if it alleviates the problem.
                 */
                if (hdev->reset_attempts > 3) {
                        /* prepare for full reset of stack + pcie interface */
                        hdev->nic.reset_level = HNAE3_VF_FULL_RESET;

                        /* "defer" schedule the reset task again */
                        set_bit(HCLGEVF_RESET_PENDING, &hdev->reset_state);
                } else {
                        hdev->reset_attempts++;

                        /* request PF for resetting this VF via mailbox */
                        ret = hclgevf_do_reset(hdev);
                        if (ret)
                                dev_warn(&hdev->pdev->dev,
                                         "VF rst fail, stack will call\n");
                }
        }

        clear_bit(HCLGEVF_STATE_RST_HANDLING, &hdev->state);
}

static void hclgevf_mailbox_service_task(struct work_struct *work)
{
        struct hclgevf_dev *hdev;

        hdev = container_of(work, struct hclgevf_dev, mbx_service_task);

        if (test_and_set_bit(HCLGEVF_STATE_MBX_HANDLING, &hdev->state))
                return;

        clear_bit(HCLGEVF_STATE_MBX_SERVICE_SCHED, &hdev->state);

        hclgevf_mbx_async_handler(hdev);

        clear_bit(HCLGEVF_STATE_MBX_HANDLING, &hdev->state);
}

static void hclgevf_service_task(struct work_struct *work)
{
        struct hclgevf_dev *hdev;

        hdev = container_of(work, struct hclgevf_dev, service_task);

        /* request the link status from the PF. PF would be able to tell VF
         * about such updates in future so we might remove this later
         */
        hclgevf_request_link_info(hdev);

        hclgevf_deferred_task_schedule(hdev);

        clear_bit(HCLGEVF_STATE_SERVICE_SCHED, &hdev->state);
}

static void hclgevf_clear_event_cause(struct hclgevf_dev *hdev, u32 regclr)
{
        hclgevf_write_dev(&hdev->hw, HCLGEVF_VECTOR0_CMDQ_SRC_REG, regclr);
}

static bool hclgevf_check_event_cause(struct hclgevf_dev *hdev, u32 *clearval)
{
        u32 cmdq_src_reg;

        /* fetch the events from their corresponding regs */
        cmdq_src_reg = hclgevf_read_dev(&hdev->hw,
                                        HCLGEVF_VECTOR0_CMDQ_SRC_REG);

        /* check for vector0 mailbox(=CMDQ RX) event source */
        if (BIT(HCLGEVF_VECTOR0_RX_CMDQ_INT_B) & cmdq_src_reg) {
                cmdq_src_reg &= ~BIT(HCLGEVF_VECTOR0_RX_CMDQ_INT_B);
                *clearval = cmdq_src_reg;
                return true;
        }

        dev_dbg(&hdev->pdev->dev, "vector 0 interrupt from unknown source\n");

        return false;
}

static void hclgevf_enable_vector(struct hclgevf_misc_vector *vector, bool en)
{
        writel(en ? 1 : 0, vector->addr);
}

static irqreturn_t hclgevf_misc_irq_handle(int irq, void *data)
{
        struct hclgevf_dev *hdev = data;
        u32 clearval;

        hclgevf_enable_vector(&hdev->misc_vector, false);
        if (!hclgevf_check_event_cause(hdev, &clearval))
                goto skip_sched;

        hclgevf_mbx_handler(hdev);

        hclgevf_clear_event_cause(hdev, clearval);

skip_sched:
        hclgevf_enable_vector(&hdev->misc_vector, true);

        return IRQ_HANDLED;
}

static int hclgevf_configure(struct hclgevf_dev *hdev)
{
        int ret;

        /* get queue configuration from PF */
        ret = hclge_get_queue_info(hdev);
        if (ret)
                return ret;
        /* get tc configuration from PF */
        return hclgevf_get_tc_info(hdev);
}

static int hclgevf_alloc_hdev(struct hnae3_ae_dev *ae_dev)
{
        struct pci_dev *pdev = ae_dev->pdev;
        struct hclgevf_dev *hdev = ae_dev->priv;

        hdev = devm_kzalloc(&pdev->dev, sizeof(*hdev), GFP_KERNEL);
        if (!hdev)
                return -ENOMEM;

        hdev->pdev = pdev;
        hdev->ae_dev = ae_dev;
        ae_dev->priv = hdev;

        return 0;
}

static int hclgevf_init_roce_base_info(struct hclgevf_dev *hdev)
{
        struct hnae3_handle *roce = &hdev->roce;
        struct hnae3_handle *nic = &hdev->nic;

        roce->rinfo.num_vectors = HCLGEVF_ROCEE_VECTOR_NUM;

        if (hdev->num_msi_left < roce->rinfo.num_vectors ||
            hdev->num_msi_left == 0)
                return -EINVAL;

        roce->rinfo.base_vector =
                hdev->vector_status[hdev->num_msi_used];

        roce->rinfo.netdev = nic->kinfo.netdev;
        roce->rinfo.roce_io_base = hdev->hw.io_base;

        roce->pdev = nic->pdev;
        roce->ae_algo = nic->ae_algo;
        roce->numa_node_mask = nic->numa_node_mask;

        return 0;
}

static int hclgevf_rss_init_hw(struct hclgevf_dev *hdev)
{
        struct hclgevf_rss_cfg *rss_cfg = &hdev->rss_cfg;
        int i, ret;

        rss_cfg->rss_size = hdev->rss_size_max;

        /* Initialize RSS indirect table for each vport */
        for (i = 0; i < HCLGEVF_RSS_IND_TBL_SIZE; i++)
                rss_cfg->rss_indirection_tbl[i] = i % hdev->rss_size_max;

        ret = hclgevf_set_rss_indir_table(hdev);
        if (ret)
                return ret;

        return hclgevf_set_rss_tc_mode(hdev, hdev->rss_size_max);
}

static int hclgevf_init_vlan_config(struct hclgevf_dev *hdev)
{
        /* other vlan config(like, VLAN TX/RX offload) would also be added
         * here later
         */
        return hclgevf_set_vlan_filter(&hdev->nic, htons(ETH_P_8021Q), 0,
                                       false);
}

static int hclgevf_ae_start(struct hnae3_handle *handle)
{
        struct hclgevf_dev *hdev = hclgevf_ae_get_hdev(handle);
        int i, queue_id;

        for (i = 0; i < handle->kinfo.num_tqps; i++) {
                /* ring enable */
                queue_id = hclgevf_get_queue_id(handle->kinfo.tqp[i]);
                if (queue_id < 0) {
                        dev_warn(&hdev->pdev->dev,
                                 "Get invalid queue id, ignore it\n");
                        continue;
                }

                hclgevf_tqp_enable(hdev, queue_id, 0, true);
        }

        /* reset tqp stats */
        hclgevf_reset_tqp_stats(handle);

        hclgevf_request_link_info(hdev);

        clear_bit(HCLGEVF_STATE_DOWN, &hdev->state);
        mod_timer(&hdev->service_timer, jiffies + HZ);

        return 0;
}

static void hclgevf_ae_stop(struct hnae3_handle *handle)
{
        struct hclgevf_dev *hdev = hclgevf_ae_get_hdev(handle);
        int i, queue_id;

        for (i = 0; i < hdev->num_tqps; i++) {
                /* Ring disable */
                queue_id = hclgevf_get_queue_id(handle->kinfo.tqp[i]);
                if (queue_id < 0) {
                        dev_warn(&hdev->pdev->dev,
                                 "Get invalid queue id, ignore it\n");
                        continue;
                }

                hclgevf_tqp_enable(hdev, queue_id, 0, false);
        }

        /* reset tqp stats */
        hclgevf_reset_tqp_stats(handle);
        del_timer_sync(&hdev->service_timer);
        cancel_work_sync(&hdev->service_task);
        clear_bit(HCLGEVF_STATE_SERVICE_SCHED, &hdev->state);
        hclgevf_update_link_status(hdev, 0);
}

static void hclgevf_state_init(struct hclgevf_dev *hdev)
{
        /* if this is on going reset then skip this initialization */
        if (hclgevf_dev_ongoing_reset(hdev))
                return;

        /* setup tasks for the MBX */
        INIT_WORK(&hdev->mbx_service_task, hclgevf_mailbox_service_task);
        clear_bit(HCLGEVF_STATE_MBX_SERVICE_SCHED, &hdev->state);
        clear_bit(HCLGEVF_STATE_MBX_HANDLING, &hdev->state);

        /* setup tasks for service timer */
        timer_setup(&hdev->service_timer, hclgevf_service_timer, 0);

        INIT_WORK(&hdev->service_task, hclgevf_service_task);
        clear_bit(HCLGEVF_STATE_SERVICE_SCHED, &hdev->state);

        INIT_WORK(&hdev->rst_service_task, hclgevf_reset_service_task);

        mutex_init(&hdev->mbx_resp.mbx_mutex);

        /* bring the device down */
        set_bit(HCLGEVF_STATE_DOWN, &hdev->state);
}

static void hclgevf_state_uninit(struct hclgevf_dev *hdev)
{
        set_bit(HCLGEVF_STATE_DOWN, &hdev->state);

        if (hdev->service_timer.function)
                del_timer_sync(&hdev->service_timer);
        if (hdev->service_task.func)
                cancel_work_sync(&hdev->service_task);
        if (hdev->mbx_service_task.func)
                cancel_work_sync(&hdev->mbx_service_task);
        if (hdev->rst_service_task.func)
                cancel_work_sync(&hdev->rst_service_task);

        mutex_destroy(&hdev->mbx_resp.mbx_mutex);
}

static int hclgevf_init_msi(struct hclgevf_dev *hdev)
{
        struct pci_dev *pdev = hdev->pdev;
        int vectors;
        int i;

        /* if this is on going reset then skip this initialization */
        if (hclgevf_dev_ongoing_reset(hdev))
                return 0;

        hdev->num_msi = HCLGEVF_MAX_VF_VECTOR_NUM;

        vectors = pci_alloc_irq_vectors(pdev, 1, hdev->num_msi,
                                        PCI_IRQ_MSI | PCI_IRQ_MSIX);
        if (vectors < 0) {
                dev_err(&pdev->dev,
                        "failed(%d) to allocate MSI/MSI-X vectors\n",
                        vectors);
                return vectors;
        }
        if (vectors < hdev->num_msi)
                dev_warn(&hdev->pdev->dev,
                         "requested %d MSI/MSI-X, but allocated %d MSI/MSI-X\n",
                         hdev->num_msi, vectors);

        hdev->num_msi = vectors;
        hdev->num_msi_left = vectors;
        hdev->base_msi_vector = pdev->irq;

        hdev->vector_status = devm_kcalloc(&pdev->dev, hdev->num_msi,
                                           sizeof(u16), GFP_KERNEL);
        if (!hdev->vector_status) {
                pci_free_irq_vectors(pdev);
                return -ENOMEM;
        }

        for (i = 0; i < hdev->num_msi; i++)
                hdev->vector_status[i] = HCLGEVF_INVALID_VPORT;

        hdev->vector_irq = devm_kcalloc(&pdev->dev, hdev->num_msi,
                                        sizeof(int), GFP_KERNEL);
        if (!hdev->vector_irq) {
                pci_free_irq_vectors(pdev);
                return -ENOMEM;
        }

        return 0;
}

static void hclgevf_uninit_msi(struct hclgevf_dev *hdev)
{
        struct pci_dev *pdev = hdev->pdev;

        pci_free_irq_vectors(pdev);
}

static int hclgevf_misc_irq_init(struct hclgevf_dev *hdev)
{
        int ret = 0;

        /* if this is on going reset then skip this initialization */
        if (hclgevf_dev_ongoing_reset(hdev))
                return 0;

        hclgevf_get_misc_vector(hdev);

        ret = request_irq(hdev->misc_vector.vector_irq, hclgevf_misc_irq_handle,
                          0, "hclgevf_cmd", hdev);
        if (ret) {
                dev_err(&hdev->pdev->dev, "VF failed to request misc irq(%d)\n",
                        hdev->misc_vector.vector_irq);
                return ret;
        }

        hclgevf_clear_event_cause(hdev, 0);

        /* enable misc. vector(vector 0) */
        hclgevf_enable_vector(&hdev->misc_vector, true);

        return ret;
}

static void hclgevf_misc_irq_uninit(struct hclgevf_dev *hdev)
{
        /* disable misc vector(vector 0) */
        hclgevf_enable_vector(&hdev->misc_vector, false);
        synchronize_irq(hdev->misc_vector.vector_irq);
        free_irq(hdev->misc_vector.vector_irq, hdev);
        hclgevf_free_vector(hdev, 0);
}

static int hclgevf_init_instance(struct hclgevf_dev *hdev,
                                 struct hnae3_client *client)
{
        int ret;

        switch (client->type) {
        case HNAE3_CLIENT_KNIC:
                hdev->nic_client = client;
                hdev->nic.client = client;

                ret = client->ops->init_instance(&hdev->nic);
                if (ret)
                        return ret;

                if (hdev->roce_client && hnae3_dev_roce_supported(hdev)) {
                        struct hnae3_client *rc = hdev->roce_client;

                        ret = hclgevf_init_roce_base_info(hdev);
                        if (ret)
                                return ret;
                        ret = rc->ops->init_instance(&hdev->roce);
                        if (ret)
                                return ret;
                }
                break;
        case HNAE3_CLIENT_UNIC:
                hdev->nic_client = client;
                hdev->nic.client = client;

                ret = client->ops->init_instance(&hdev->nic);
                if (ret)
                        return ret;
                break;
        case HNAE3_CLIENT_ROCE:
                if (hnae3_dev_roce_supported(hdev)) {
                        hdev->roce_client = client;
                        hdev->roce.client = client;
                }

                if (hdev->roce_client && hdev->nic_client) {
                        ret = hclgevf_init_roce_base_info(hdev);
                        if (ret)
                                return ret;

                        ret = client->ops->init_instance(&hdev->roce);
                        if (ret)
                                return ret;
                }
        }

        return 0;
}

static void hclgevf_uninit_instance(struct hclgevf_dev *hdev,
                                    struct hnae3_client *client)
{
        /* un-init roce, if it exists */
        if (hdev->roce_client)
                hdev->roce_client->ops->uninit_instance(&hdev->roce, 0);

        /* un-init nic/unic, if this was not called by roce client */
        if ((client->ops->uninit_instance) &&
            (client->type != HNAE3_CLIENT_ROCE))
                client->ops->uninit_instance(&hdev->nic, 0);
}

static int hclgevf_register_client(struct hnae3_client *client,
                                   struct hnae3_ae_dev *ae_dev)
{
        struct hclgevf_dev *hdev = ae_dev->priv;

        return hclgevf_init_instance(hdev, client);
}

static void hclgevf_unregister_client(struct hnae3_client *client,
                                      struct hnae3_ae_dev *ae_dev)
{
        struct hclgevf_dev *hdev = ae_dev->priv;

        hclgevf_uninit_instance(hdev, client);
}

static int hclgevf_pci_init(struct hclgevf_dev *hdev)
{
        struct pci_dev *pdev = hdev->pdev;
        struct hclgevf_hw *hw;
        int ret;

        /* check if we need to skip initialization of pci. This will happen if
         * device is undergoing VF reset. Otherwise, we would need to
         * re-initialize pci interface again i.e. when device is not going
         * through *any* reset or actually undergoing full reset.
         */
        if (hclgevf_dev_ongoing_reset(hdev))
                return 0;

        ret = pci_enable_device(pdev);
        if (ret) {
                dev_err(&pdev->dev, "failed to enable PCI device\n");
                return ret;
        }

        ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
        if (ret) {
                dev_err(&pdev->dev, "can't set consistent PCI DMA, exiting");
                goto err_disable_device;
        }

        ret = pci_request_regions(pdev, HCLGEVF_DRIVER_NAME);
        if (ret) {
                dev_err(&pdev->dev, "PCI request regions failed %d\n", ret);
                goto err_disable_device;
        }

        pci_set_master(pdev);
        hw = &hdev->hw;
        hw->hdev = hdev;
        hw->io_base = pci_iomap(pdev, 2, 0);
        if (!hw->io_base) {
                dev_err(&pdev->dev, "can't map configuration register space\n");
                ret = -ENOMEM;
                goto err_clr_master;
        }

        return 0;

err_clr_master:
        pci_clear_master(pdev);
        pci_release_regions(pdev);
err_disable_device:
        pci_disable_device(pdev);

        return ret;
}

static void hclgevf_pci_uninit(struct hclgevf_dev *hdev)
{
        struct pci_dev *pdev = hdev->pdev;

        pci_iounmap(pdev, hdev->hw.io_base);
        pci_clear_master(pdev);
        pci_release_regions(pdev);
        pci_disable_device(pdev);
}

static int hclgevf_init_hdev(struct hclgevf_dev *hdev)
{
        struct pci_dev *pdev = hdev->pdev;
        int ret;

        /* check if device is on-going full reset(i.e. pcie as well) */
        if (hclgevf_dev_ongoing_full_reset(hdev)) {
                dev_warn(&pdev->dev, "device is going full reset\n");
                hclgevf_uninit_hdev(hdev);
        }

        ret = hclgevf_pci_init(hdev);
        if (ret) {
                dev_err(&pdev->dev, "PCI initialization failed\n");
                return ret;
        }

        ret = hclgevf_init_msi(hdev);
        if (ret) {
                dev_err(&pdev->dev, "failed(%d) to init MSI/MSI-X\n", ret);
                goto err_irq_init;
        }

        hclgevf_state_init(hdev);

        ret = hclgevf_cmd_init(hdev);
        if (ret)
                goto err_cmd_init;

        ret = hclgevf_misc_irq_init(hdev);
        if (ret) {
                dev_err(&pdev->dev, "failed(%d) to init Misc IRQ(vector0)\n",
                        ret);
                goto err_misc_irq_init;
        }

        ret = hclgevf_configure(hdev);
        if (ret) {
                dev_err(&pdev->dev, "failed(%d) to fetch configuration\n", ret);
                goto err_config;
        }

        ret = hclgevf_alloc_tqps(hdev);
        if (ret) {
                dev_err(&pdev->dev, "failed(%d) to allocate TQPs\n", ret);
                goto err_config;
        }

        ret = hclgevf_set_handle_info(hdev);
        if (ret) {
                dev_err(&pdev->dev, "failed(%d) to set handle info\n", ret);
                goto err_config;
        }

        /* Initialize mta type for this VF */
        ret = hclgevf_cfg_func_mta_type(hdev);
        if (ret) {
                dev_err(&hdev->pdev->dev,
                        "failed(%d) to initialize MTA type\n", ret);
                goto err_config;
        }

        /* Initialize RSS for this VF */
        ret = hclgevf_rss_init_hw(hdev);
        if (ret) {
                dev_err(&hdev->pdev->dev,
                        "failed(%d) to initialize RSS\n", ret);
                goto err_config;
        }

        ret = hclgevf_init_vlan_config(hdev);
        if (ret) {
                dev_err(&hdev->pdev->dev,
                        "failed(%d) to initialize VLAN config\n", ret);
                goto err_config;
        }

        pr_info("finished initializing %s driver\n", HCLGEVF_DRIVER_NAME);

        return 0;

err_config:
        hclgevf_misc_irq_uninit(hdev);
err_misc_irq_init:
        hclgevf_cmd_uninit(hdev);
err_cmd_init:
        hclgevf_state_uninit(hdev);
        hclgevf_uninit_msi(hdev);
err_irq_init:
        hclgevf_pci_uninit(hdev);
        return ret;
}

static void hclgevf_uninit_hdev(struct hclgevf_dev *hdev)
{
        hclgevf_state_uninit(hdev);
        hclgevf_misc_irq_uninit(hdev);
        hclgevf_cmd_uninit(hdev);
        hclgevf_uninit_msi(hdev);
        hclgevf_pci_uninit(hdev);
}

static int hclgevf_init_ae_dev(struct hnae3_ae_dev *ae_dev)
{
        struct pci_dev *pdev = ae_dev->pdev;
        int ret;

        ret = hclgevf_alloc_hdev(ae_dev);
        if (ret) {
                dev_err(&pdev->dev, "hclge device allocation failed\n");
                return ret;
        }

        ret = hclgevf_init_hdev(ae_dev->priv);
        if (ret)
                dev_err(&pdev->dev, "hclge device initialization failed\n");

        return ret;
}

static void hclgevf_uninit_ae_dev(struct hnae3_ae_dev *ae_dev)
{
        struct hclgevf_dev *hdev = ae_dev->priv;

        hclgevf_uninit_hdev(hdev);
        ae_dev->priv = NULL;
}

static u32 hclgevf_get_max_channels(struct hclgevf_dev *hdev)
{
        struct hnae3_handle *nic = &hdev->nic;
        struct hnae3_knic_private_info *kinfo = &nic->kinfo;

        return min_t(u32, hdev->rss_size_max * kinfo->num_tc, hdev->num_tqps);
}

/**
 * hclgevf_get_channels - Get the current channels enabled and max supported.
 * @handle: hardware information for network interface
 * @ch: ethtool channels structure
 *
 * We don't support separate tx and rx queues as channels. The other count
 * represents how many queues are being used for control. max_combined counts
 * how many queue pairs we can support. They may not be mapped 1 to 1 with
 * q_vectors since we support a lot more queue pairs than q_vectors.
 **/
static void hclgevf_get_channels(struct hnae3_handle *handle,
                                 struct ethtool_channels *ch)
{
        struct hclgevf_dev *hdev = hclgevf_ae_get_hdev(handle);

        ch->max_combined = hclgevf_get_max_channels(hdev);
        ch->other_count = 0;
        ch->max_other = 0;
        ch->combined_count = hdev->num_tqps;
}

static void hclgevf_get_tqps_and_rss_info(struct hnae3_handle *handle,
                                          u16 *free_tqps, u16 *max_rss_size)
{
        struct hclgevf_dev *hdev = hclgevf_ae_get_hdev(handle);

        *free_tqps = 0;
        *max_rss_size = hdev->rss_size_max;
}

static int hclgevf_get_status(struct hnae3_handle *handle)
{
        struct hclgevf_dev *hdev = hclgevf_ae_get_hdev(handle);

        return hdev->hw.mac.link;
}

static void hclgevf_get_ksettings_an_result(struct hnae3_handle *handle,
                                            u8 *auto_neg, u32 *speed,
                                            u8 *duplex)
{
        struct hclgevf_dev *hdev = hclgevf_ae_get_hdev(handle);

        if (speed)
                *speed = hdev->hw.mac.speed;
        if (duplex)
                *duplex = hdev->hw.mac.duplex;
        if (auto_neg)
                *auto_neg = AUTONEG_DISABLE;
}

void hclgevf_update_speed_duplex(struct hclgevf_dev *hdev, u32 speed,
                                 u8 duplex)
{
        hdev->hw.mac.speed = speed;
        hdev->hw.mac.duplex = duplex;
}

static const struct hnae3_ae_ops hclgevf_ops = {
        .init_ae_dev = hclgevf_init_ae_dev,
        .uninit_ae_dev = hclgevf_uninit_ae_dev,
        .init_client_instance = hclgevf_register_client,
        .uninit_client_instance = hclgevf_unregister_client,
        .start = hclgevf_ae_start,
        .stop = hclgevf_ae_stop,
        .map_ring_to_vector = hclgevf_map_ring_to_vector,
        .unmap_ring_from_vector = hclgevf_unmap_ring_from_vector,
        .get_vector = hclgevf_get_vector,
        .put_vector = hclgevf_put_vector,
        .reset_queue = hclgevf_reset_tqp,
        .set_promisc_mode = hclgevf_set_promisc_mode,
        .get_mac_addr = hclgevf_get_mac_addr,
        .set_mac_addr = hclgevf_set_mac_addr,
        .add_uc_addr = hclgevf_add_uc_addr,
        .rm_uc_addr = hclgevf_rm_uc_addr,
        .add_mc_addr = hclgevf_add_mc_addr,
        .rm_mc_addr = hclgevf_rm_mc_addr,
        .update_mta_status = hclgevf_update_mta_status,
        .get_stats = hclgevf_get_stats,
        .update_stats = hclgevf_update_stats,
        .get_strings = hclgevf_get_strings,
        .get_sset_count = hclgevf_get_sset_count,
        .get_rss_key_size = hclgevf_get_rss_key_size,
        .get_rss_indir_size = hclgevf_get_rss_indir_size,
        .get_rss = hclgevf_get_rss,
        .set_rss = hclgevf_set_rss,
        .get_tc_size = hclgevf_get_tc_size,
        .get_fw_version = hclgevf_get_fw_version,
        .set_vlan_filter = hclgevf_set_vlan_filter,
        .enable_hw_strip_rxvtag = hclgevf_en_hw_strip_rxvtag,
        .reset_event = hclgevf_reset_event,
        .get_channels = hclgevf_get_channels,
        .get_tqps_and_rss_info = hclgevf_get_tqps_and_rss_info,
        .get_status = hclgevf_get_status,
        .get_ksettings_an_result = hclgevf_get_ksettings_an_result,
};

static struct hnae3_ae_algo ae_algovf = {
        .ops = &hclgevf_ops,
        .name = HCLGEVF_NAME,
        .pdev_id_table = ae_algovf_pci_tbl,
};

static int hclgevf_init(void)
{
        pr_info("%s is initializing\n", HCLGEVF_NAME);

        hnae3_register_ae_algo(&ae_algovf);

        return 0;
}

static void hclgevf_exit(void)
{
        hnae3_unregister_ae_algo(&ae_algovf);
}
module_init(hclgevf_init);
module_exit(hclgevf_exit);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Huawei Tech. Co., Ltd.");
MODULE_DESCRIPTION("HCLGEVF Driver");
MODULE_VERSION(HCLGEVF_MOD_VERSION);