1 | // SPDX-License-Identifier: GPL-2.0+ |
2 | /* Copyright (c) 2021 Hisilicon Limited. */ |
3 | |
4 | #include <net/devlink.h> |
5 | |
6 | #include "hclge_devlink.h" |
7 | |
8 | static int hclge_devlink_info_get(struct devlink *devlink, |
9 | struct devlink_info_req *req, |
10 | struct netlink_ext_ack *extack) |
11 | { |
12 | #define HCLGE_DEVLINK_FW_STRING_LEN 32 |
13 | struct hclge_devlink_priv *priv = devlink_priv(devlink); |
14 | char version_str[HCLGE_DEVLINK_FW_STRING_LEN]; |
15 | struct hclge_dev *hdev = priv->hdev; |
16 | |
17 | snprintf(buf: version_str, size: sizeof(version_str), fmt: "%lu.%lu.%lu.%lu" , |
18 | hnae3_get_field(hdev->fw_version, HNAE3_FW_VERSION_BYTE3_MASK, |
19 | HNAE3_FW_VERSION_BYTE3_SHIFT), |
20 | hnae3_get_field(hdev->fw_version, HNAE3_FW_VERSION_BYTE2_MASK, |
21 | HNAE3_FW_VERSION_BYTE2_SHIFT), |
22 | hnae3_get_field(hdev->fw_version, HNAE3_FW_VERSION_BYTE1_MASK, |
23 | HNAE3_FW_VERSION_BYTE1_SHIFT), |
24 | hnae3_get_field(hdev->fw_version, HNAE3_FW_VERSION_BYTE0_MASK, |
25 | HNAE3_FW_VERSION_BYTE0_SHIFT)); |
26 | |
27 | return devlink_info_version_running_put(req, |
28 | DEVLINK_INFO_VERSION_GENERIC_FW, |
29 | version_value: version_str); |
30 | } |
31 | |
32 | static int hclge_devlink_reload_down(struct devlink *devlink, bool netns_change, |
33 | enum devlink_reload_action action, |
34 | enum devlink_reload_limit limit, |
35 | struct netlink_ext_ack *extack) |
36 | { |
37 | struct hclge_devlink_priv *priv = devlink_priv(devlink); |
38 | struct hclge_dev *hdev = priv->hdev; |
39 | struct hnae3_handle *h = &hdev->vport->nic; |
40 | struct pci_dev *pdev = hdev->pdev; |
41 | int ret; |
42 | |
43 | if (test_bit(HCLGE_STATE_RST_HANDLING, &hdev->state)) { |
44 | dev_err(&pdev->dev, "reset is handling\n" ); |
45 | return -EBUSY; |
46 | } |
47 | |
48 | switch (action) { |
49 | case DEVLINK_RELOAD_ACTION_DRIVER_REINIT: |
50 | rtnl_lock(); |
51 | ret = hdev->nic_client->ops->reset_notify(h, HNAE3_DOWN_CLIENT); |
52 | if (ret) { |
53 | rtnl_unlock(); |
54 | return ret; |
55 | } |
56 | |
57 | ret = hdev->nic_client->ops->reset_notify(h, |
58 | HNAE3_UNINIT_CLIENT); |
59 | rtnl_unlock(); |
60 | return ret; |
61 | default: |
62 | return -EOPNOTSUPP; |
63 | } |
64 | } |
65 | |
66 | static int hclge_devlink_reload_up(struct devlink *devlink, |
67 | enum devlink_reload_action action, |
68 | enum devlink_reload_limit limit, |
69 | u32 *actions_performed, |
70 | struct netlink_ext_ack *extack) |
71 | { |
72 | struct hclge_devlink_priv *priv = devlink_priv(devlink); |
73 | struct hclge_dev *hdev = priv->hdev; |
74 | struct hnae3_handle *h = &hdev->vport->nic; |
75 | int ret; |
76 | |
77 | *actions_performed = BIT(action); |
78 | switch (action) { |
79 | case DEVLINK_RELOAD_ACTION_DRIVER_REINIT: |
80 | rtnl_lock(); |
81 | ret = hdev->nic_client->ops->reset_notify(h, HNAE3_INIT_CLIENT); |
82 | if (ret) { |
83 | rtnl_unlock(); |
84 | return ret; |
85 | } |
86 | |
87 | ret = hdev->nic_client->ops->reset_notify(h, HNAE3_UP_CLIENT); |
88 | rtnl_unlock(); |
89 | return ret; |
90 | default: |
91 | return -EOPNOTSUPP; |
92 | } |
93 | } |
94 | |
95 | static const struct devlink_ops hclge_devlink_ops = { |
96 | .info_get = hclge_devlink_info_get, |
97 | .reload_actions = BIT(DEVLINK_RELOAD_ACTION_DRIVER_REINIT), |
98 | .reload_down = hclge_devlink_reload_down, |
99 | .reload_up = hclge_devlink_reload_up, |
100 | }; |
101 | |
102 | int hclge_devlink_init(struct hclge_dev *hdev) |
103 | { |
104 | struct pci_dev *pdev = hdev->pdev; |
105 | struct hclge_devlink_priv *priv; |
106 | struct devlink *devlink; |
107 | |
108 | devlink = devlink_alloc(ops: &hclge_devlink_ops, |
109 | priv_size: sizeof(struct hclge_devlink_priv), dev: &pdev->dev); |
110 | if (!devlink) |
111 | return -ENOMEM; |
112 | |
113 | priv = devlink_priv(devlink); |
114 | priv->hdev = hdev; |
115 | hdev->devlink = devlink; |
116 | |
117 | devlink_register(devlink); |
118 | return 0; |
119 | } |
120 | |
121 | void hclge_devlink_uninit(struct hclge_dev *hdev) |
122 | { |
123 | struct devlink *devlink = hdev->devlink; |
124 | |
125 | devlink_unregister(devlink); |
126 | |
127 | devlink_free(devlink); |
128 | } |
129 | |