1 | // SPDX-License-Identifier: GPL-2.0+ |
2 | /* Copyright (c) 2021 Hisilicon Limited. */ |
3 | |
4 | #include <net/devlink.h> |
5 | |
6 | #include "hclgevf_devlink.h" |
7 | |
8 | static 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 | |
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 hclgevf_devlink_reload_down(struct devlink *devlink, |
33 | bool netns_change, |
34 | enum devlink_reload_action action, |
35 | enum devlink_reload_limit limit, |
36 | struct netlink_ext_ack *extack) |
37 | { |
38 | struct hclgevf_devlink_priv *priv = devlink_priv(devlink); |
39 | struct hclgevf_dev *hdev = priv->hdev; |
40 | struct hnae3_handle *h = &hdev->nic; |
41 | struct pci_dev *pdev = hdev->pdev; |
42 | int ret; |
43 | |
44 | if (test_bit(HCLGEVF_STATE_RST_HANDLING, &hdev->state)) { |
45 | dev_err(&pdev->dev, "reset is handling\n" ); |
46 | return -EBUSY; |
47 | } |
48 | |
49 | switch (action) { |
50 | case DEVLINK_RELOAD_ACTION_DRIVER_REINIT: |
51 | rtnl_lock(); |
52 | ret = hdev->nic_client->ops->reset_notify(h, HNAE3_DOWN_CLIENT); |
53 | if (ret) { |
54 | rtnl_unlock(); |
55 | return ret; |
56 | } |
57 | |
58 | ret = hdev->nic_client->ops->reset_notify(h, |
59 | HNAE3_UNINIT_CLIENT); |
60 | rtnl_unlock(); |
61 | return ret; |
62 | default: |
63 | return -EOPNOTSUPP; |
64 | } |
65 | } |
66 | |
67 | static int hclgevf_devlink_reload_up(struct devlink *devlink, |
68 | enum devlink_reload_action action, |
69 | enum devlink_reload_limit limit, |
70 | u32 *actions_performed, |
71 | struct netlink_ext_ack *extack) |
72 | { |
73 | struct hclgevf_devlink_priv *priv = devlink_priv(devlink); |
74 | struct hclgevf_dev *hdev = priv->hdev; |
75 | struct hnae3_handle *h = &hdev->nic; |
76 | int ret; |
77 | |
78 | *actions_performed = BIT(action); |
79 | switch (action) { |
80 | case DEVLINK_RELOAD_ACTION_DRIVER_REINIT: |
81 | rtnl_lock(); |
82 | ret = hdev->nic_client->ops->reset_notify(h, HNAE3_INIT_CLIENT); |
83 | if (ret) { |
84 | rtnl_unlock(); |
85 | return ret; |
86 | } |
87 | |
88 | ret = hdev->nic_client->ops->reset_notify(h, HNAE3_UP_CLIENT); |
89 | rtnl_unlock(); |
90 | return ret; |
91 | default: |
92 | return -EOPNOTSUPP; |
93 | } |
94 | } |
95 | |
96 | static const struct devlink_ops hclgevf_devlink_ops = { |
97 | .info_get = hclgevf_devlink_info_get, |
98 | .reload_actions = BIT(DEVLINK_RELOAD_ACTION_DRIVER_REINIT), |
99 | .reload_down = hclgevf_devlink_reload_down, |
100 | .reload_up = hclgevf_devlink_reload_up, |
101 | }; |
102 | |
103 | int hclgevf_devlink_init(struct hclgevf_dev *hdev) |
104 | { |
105 | struct pci_dev *pdev = hdev->pdev; |
106 | struct hclgevf_devlink_priv *priv; |
107 | struct devlink *devlink; |
108 | |
109 | devlink = |
110 | devlink_alloc(ops: &hclgevf_devlink_ops, |
111 | priv_size: sizeof(struct hclgevf_devlink_priv), dev: &pdev->dev); |
112 | if (!devlink) |
113 | return -ENOMEM; |
114 | |
115 | priv = devlink_priv(devlink); |
116 | priv->hdev = hdev; |
117 | hdev->devlink = devlink; |
118 | |
119 | devlink_register(devlink); |
120 | return 0; |
121 | } |
122 | |
123 | void hclgevf_devlink_uninit(struct hclgevf_dev *hdev) |
124 | { |
125 | struct devlink *devlink = hdev->devlink; |
126 | |
127 | devlink_unregister(devlink); |
128 | |
129 | devlink_free(devlink); |
130 | } |
131 | |