137 lines
3.5 KiB
C
137 lines
3.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/* Copyright (c) 2021 Hisilicon Limited. */
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#include <net/devlink.h>
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#include "hclgevf_devlink.h"
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static int hclgevf_devlink_info_get(struct devlink *devlink,
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struct devlink_info_req *req,
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struct netlink_ext_ack *extack)
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{
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#define HCLGEVF_DEVLINK_FW_STRING_LEN 32
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struct hclgevf_devlink_priv *priv = devlink_priv(devlink);
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char version_str[HCLGEVF_DEVLINK_FW_STRING_LEN];
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struct hclgevf_dev *hdev = priv->hdev;
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int ret;
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ret = devlink_info_driver_name_put(req, KBUILD_MODNAME);
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if (ret)
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return ret;
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snprintf(version_str, sizeof(version_str), "%lu.%lu.%lu.%lu",
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hnae3_get_field(hdev->fw_version, HNAE3_FW_VERSION_BYTE3_MASK,
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HNAE3_FW_VERSION_BYTE3_SHIFT),
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hnae3_get_field(hdev->fw_version, HNAE3_FW_VERSION_BYTE2_MASK,
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HNAE3_FW_VERSION_BYTE2_SHIFT),
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hnae3_get_field(hdev->fw_version, HNAE3_FW_VERSION_BYTE1_MASK,
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HNAE3_FW_VERSION_BYTE1_SHIFT),
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hnae3_get_field(hdev->fw_version, HNAE3_FW_VERSION_BYTE0_MASK,
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HNAE3_FW_VERSION_BYTE0_SHIFT));
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return devlink_info_version_running_put(req,
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DEVLINK_INFO_VERSION_GENERIC_FW,
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version_str);
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}
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static int hclgevf_devlink_reload_down(struct devlink *devlink,
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bool netns_change,
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enum devlink_reload_action action,
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enum devlink_reload_limit limit,
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struct netlink_ext_ack *extack)
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{
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struct hclgevf_devlink_priv *priv = devlink_priv(devlink);
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struct hclgevf_dev *hdev = priv->hdev;
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struct hnae3_handle *h = &hdev->nic;
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struct pci_dev *pdev = hdev->pdev;
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int ret;
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if (test_bit(HCLGEVF_STATE_RST_HANDLING, &hdev->state)) {
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dev_err(&pdev->dev, "reset is handling\n");
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return -EBUSY;
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}
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switch (action) {
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case DEVLINK_RELOAD_ACTION_DRIVER_REINIT:
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rtnl_lock();
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ret = hdev->nic_client->ops->reset_notify(h, HNAE3_DOWN_CLIENT);
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if (ret) {
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rtnl_unlock();
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return ret;
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}
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ret = hdev->nic_client->ops->reset_notify(h,
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HNAE3_UNINIT_CLIENT);
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rtnl_unlock();
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return ret;
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default:
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return -EOPNOTSUPP;
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}
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}
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static int hclgevf_devlink_reload_up(struct devlink *devlink,
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enum devlink_reload_action action,
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enum devlink_reload_limit limit,
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u32 *actions_performed,
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struct netlink_ext_ack *extack)
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{
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struct hclgevf_devlink_priv *priv = devlink_priv(devlink);
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struct hclgevf_dev *hdev = priv->hdev;
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struct hnae3_handle *h = &hdev->nic;
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int ret;
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*actions_performed = BIT(action);
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switch (action) {
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case DEVLINK_RELOAD_ACTION_DRIVER_REINIT:
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rtnl_lock();
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ret = hdev->nic_client->ops->reset_notify(h, HNAE3_INIT_CLIENT);
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if (ret) {
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rtnl_unlock();
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return ret;
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}
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ret = hdev->nic_client->ops->reset_notify(h, HNAE3_UP_CLIENT);
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rtnl_unlock();
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return ret;
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default:
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return -EOPNOTSUPP;
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}
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}
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static const struct devlink_ops hclgevf_devlink_ops = {
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.info_get = hclgevf_devlink_info_get,
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.reload_actions = BIT(DEVLINK_RELOAD_ACTION_DRIVER_REINIT),
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.reload_down = hclgevf_devlink_reload_down,
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.reload_up = hclgevf_devlink_reload_up,
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};
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int hclgevf_devlink_init(struct hclgevf_dev *hdev)
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{
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struct pci_dev *pdev = hdev->pdev;
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struct hclgevf_devlink_priv *priv;
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struct devlink *devlink;
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devlink =
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devlink_alloc(&hclgevf_devlink_ops,
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sizeof(struct hclgevf_devlink_priv), &pdev->dev);
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if (!devlink)
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return -ENOMEM;
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priv = devlink_priv(devlink);
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priv->hdev = hdev;
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hdev->devlink = devlink;
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devlink_set_features(devlink, DEVLINK_F_RELOAD);
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devlink_register(devlink);
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return 0;
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}
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void hclgevf_devlink_uninit(struct hclgevf_dev *hdev)
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{
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struct devlink *devlink = hdev->devlink;
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devlink_unregister(devlink);
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devlink_free(devlink);
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}
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