1
2
3
4#include <net/devlink.h>
5
6#include "hclgevf_devlink.h"
7
8static int hclgevf_devlink_info_get(struct devlink *devlink,
9 struct devlink_info_req *req,
10 struct netlink_ext_ack *extack)
11{
12#define HCLGEVF_DEVLINK_FW_STRING_LEN 32
13 struct hclgevf_devlink_priv *priv = devlink_priv(devlink);
14 char version_str[HCLGEVF_DEVLINK_FW_STRING_LEN];
15 struct hclgevf_dev *hdev = priv->hdev;
16 int ret;
17
18 ret = devlink_info_driver_name_put(req, KBUILD_MODNAME);
19 if (ret)
20 return ret;
21
22 snprintf(version_str, sizeof(version_str), "%lu.%lu.%lu.%lu",
23 hnae3_get_field(hdev->fw_version, HNAE3_FW_VERSION_BYTE3_MASK,
24 HNAE3_FW_VERSION_BYTE3_SHIFT),
25 hnae3_get_field(hdev->fw_version, HNAE3_FW_VERSION_BYTE2_MASK,
26 HNAE3_FW_VERSION_BYTE2_SHIFT),
27 hnae3_get_field(hdev->fw_version, HNAE3_FW_VERSION_BYTE1_MASK,
28 HNAE3_FW_VERSION_BYTE1_SHIFT),
29 hnae3_get_field(hdev->fw_version, HNAE3_FW_VERSION_BYTE0_MASK,
30 HNAE3_FW_VERSION_BYTE0_SHIFT));
31
32 return devlink_info_version_running_put(req,
33 DEVLINK_INFO_VERSION_GENERIC_FW,
34 version_str);
35}
36
37static int hclgevf_devlink_reload_down(struct devlink *devlink,
38 bool netns_change,
39 enum devlink_reload_action action,
40 enum devlink_reload_limit limit,
41 struct netlink_ext_ack *extack)
42{
43 struct hclgevf_devlink_priv *priv = devlink_priv(devlink);
44 struct hclgevf_dev *hdev = priv->hdev;
45 struct hnae3_handle *h = &hdev->nic;
46 struct pci_dev *pdev = hdev->pdev;
47 int ret;
48
49 if (test_bit(HCLGEVF_STATE_RST_HANDLING, &hdev->state)) {
50 dev_err(&pdev->dev, "reset is handling\n");
51 return -EBUSY;
52 }
53
54 switch (action) {
55 case DEVLINK_RELOAD_ACTION_DRIVER_REINIT:
56 rtnl_lock();
57 ret = hdev->nic_client->ops->reset_notify(h, HNAE3_DOWN_CLIENT);
58 if (ret) {
59 rtnl_unlock();
60 return ret;
61 }
62
63 ret = hdev->nic_client->ops->reset_notify(h,
64 HNAE3_UNINIT_CLIENT);
65 rtnl_unlock();
66 return ret;
67 default:
68 return -EOPNOTSUPP;
69 }
70}
71
72static int hclgevf_devlink_reload_up(struct devlink *devlink,
73 enum devlink_reload_action action,
74 enum devlink_reload_limit limit,
75 u32 *actions_performed,
76 struct netlink_ext_ack *extack)
77{
78 struct hclgevf_devlink_priv *priv = devlink_priv(devlink);
79 struct hclgevf_dev *hdev = priv->hdev;
80 struct hnae3_handle *h = &hdev->nic;
81 int ret;
82
83 *actions_performed = BIT(action);
84 switch (action) {
85 case DEVLINK_RELOAD_ACTION_DRIVER_REINIT:
86 rtnl_lock();
87 ret = hdev->nic_client->ops->reset_notify(h, HNAE3_INIT_CLIENT);
88 if (ret) {
89 rtnl_unlock();
90 return ret;
91 }
92
93 ret = hdev->nic_client->ops->reset_notify(h, HNAE3_UP_CLIENT);
94 rtnl_unlock();
95 return ret;
96 default:
97 return -EOPNOTSUPP;
98 }
99}
100
101static const struct devlink_ops hclgevf_devlink_ops = {
102 .info_get = hclgevf_devlink_info_get,
103 .reload_actions = BIT(DEVLINK_RELOAD_ACTION_DRIVER_REINIT),
104 .reload_down = hclgevf_devlink_reload_down,
105 .reload_up = hclgevf_devlink_reload_up,
106};
107
108int hclgevf_devlink_init(struct hclgevf_dev *hdev)
109{
110 struct pci_dev *pdev = hdev->pdev;
111 struct hclgevf_devlink_priv *priv;
112 struct devlink *devlink;
113 int ret;
114
115 devlink =
116 devlink_alloc(&hclgevf_devlink_ops,
117 sizeof(struct hclgevf_devlink_priv), &pdev->dev);
118 if (!devlink)
119 return -ENOMEM;
120
121 priv = devlink_priv(devlink);
122 priv->hdev = hdev;
123 hdev->devlink = devlink;
124
125 ret = devlink_register(devlink);
126 if (ret) {
127 dev_err(&pdev->dev, "failed to register devlink, ret = %d\n",
128 ret);
129 goto out_reg_fail;
130 }
131
132 devlink_reload_enable(devlink);
133
134 return 0;
135
136out_reg_fail:
137 devlink_free(devlink);
138 return ret;
139}
140
141void hclgevf_devlink_uninit(struct hclgevf_dev *hdev)
142{
143 struct devlink *devlink = hdev->devlink;
144
145 devlink_reload_disable(devlink);
146
147 devlink_unregister(devlink);
148
149 devlink_free(devlink);
150}
151
