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