1 // SPDX-License-Identifier: GPL-2.0+
2 // Copyright (c) 2016-2017 Hisilicon Limited.
4 #include <linux/etherdevice.h>
5 #include <linux/kernel.h>
8 #include "hclge_main.h"
9 #include "hclge_mdio.h"
11 #define HCLGE_PHY_SUPPORTED_FEATURES (SUPPORTED_Autoneg | \
14 PHY_100BT_FEATURES | \
15 SUPPORTED_1000baseT_Full)
17 enum hclge_mdio_c22_op_seq {
18 HCLGE_MDIO_C22_WRITE = 1,
19 HCLGE_MDIO_C22_READ = 2
22 #define HCLGE_MDIO_CTRL_START_B 0
23 #define HCLGE_MDIO_CTRL_ST_S 1
24 #define HCLGE_MDIO_CTRL_ST_M (0x3 << HCLGE_MDIO_CTRL_ST_S)
25 #define HCLGE_MDIO_CTRL_OP_S 3
26 #define HCLGE_MDIO_CTRL_OP_M (0x3 << HCLGE_MDIO_CTRL_OP_S)
28 #define HCLGE_MDIO_PHYID_S 0
29 #define HCLGE_MDIO_PHYID_M (0x1f << HCLGE_MDIO_PHYID_S)
31 #define HCLGE_MDIO_PHYREG_S 0
32 #define HCLGE_MDIO_PHYREG_M (0x1f << HCLGE_MDIO_PHYREG_S)
34 #define HCLGE_MDIO_STA_B 0
36 struct hclge_mdio_cfg_cmd {
47 static int hclge_mdio_write(struct mii_bus *bus, int phyid, int regnum,
50 struct hclge_mdio_cfg_cmd *mdio_cmd;
51 struct hclge_dev *hdev = bus->priv;
52 struct hclge_desc desc;
55 if (test_bit(HCLGE_STATE_CMD_DISABLE, &hdev->state))
58 hclge_cmd_setup_basic_desc(&desc, HCLGE_OPC_MDIO_CONFIG, false);
60 mdio_cmd = (struct hclge_mdio_cfg_cmd *)desc.data;
62 hnae3_set_field(mdio_cmd->phyid, HCLGE_MDIO_PHYID_M,
63 HCLGE_MDIO_PHYID_S, phyid);
64 hnae3_set_field(mdio_cmd->phyad, HCLGE_MDIO_PHYREG_M,
65 HCLGE_MDIO_PHYREG_S, regnum);
67 hnae3_set_bit(mdio_cmd->ctrl_bit, HCLGE_MDIO_CTRL_START_B, 1);
68 hnae3_set_field(mdio_cmd->ctrl_bit, HCLGE_MDIO_CTRL_ST_M,
69 HCLGE_MDIO_CTRL_ST_S, 1);
70 hnae3_set_field(mdio_cmd->ctrl_bit, HCLGE_MDIO_CTRL_OP_M,
71 HCLGE_MDIO_CTRL_OP_S, HCLGE_MDIO_C22_WRITE);
73 mdio_cmd->data_wr = cpu_to_le16(data);
75 ret = hclge_cmd_send(&hdev->hw, &desc, 1);
77 dev_err(&hdev->pdev->dev,
78 "mdio write fail when sending cmd, status is %d.\n",
86 static int hclge_mdio_read(struct mii_bus *bus, int phyid, int regnum)
88 struct hclge_mdio_cfg_cmd *mdio_cmd;
89 struct hclge_dev *hdev = bus->priv;
90 struct hclge_desc desc;
93 if (test_bit(HCLGE_STATE_CMD_DISABLE, &hdev->state))
96 hclge_cmd_setup_basic_desc(&desc, HCLGE_OPC_MDIO_CONFIG, true);
98 mdio_cmd = (struct hclge_mdio_cfg_cmd *)desc.data;
100 hnae3_set_field(mdio_cmd->phyid, HCLGE_MDIO_PHYID_M,
101 HCLGE_MDIO_PHYID_S, phyid);
102 hnae3_set_field(mdio_cmd->phyad, HCLGE_MDIO_PHYREG_M,
103 HCLGE_MDIO_PHYREG_S, regnum);
105 hnae3_set_bit(mdio_cmd->ctrl_bit, HCLGE_MDIO_CTRL_START_B, 1);
106 hnae3_set_field(mdio_cmd->ctrl_bit, HCLGE_MDIO_CTRL_ST_M,
107 HCLGE_MDIO_CTRL_ST_S, 1);
108 hnae3_set_field(mdio_cmd->ctrl_bit, HCLGE_MDIO_CTRL_OP_M,
109 HCLGE_MDIO_CTRL_OP_S, HCLGE_MDIO_C22_READ);
111 /* Read out phy data */
112 ret = hclge_cmd_send(&hdev->hw, &desc, 1);
114 dev_err(&hdev->pdev->dev,
115 "mdio read fail when get data, status is %d.\n",
120 if (hnae3_get_bit(le16_to_cpu(mdio_cmd->sta), HCLGE_MDIO_STA_B)) {
121 dev_err(&hdev->pdev->dev, "mdio read data error\n");
125 return le16_to_cpu(mdio_cmd->data_rd);
128 int hclge_mac_mdio_config(struct hclge_dev *hdev)
130 struct hclge_mac *mac = &hdev->hw.mac;
131 struct phy_device *phydev;
132 struct mii_bus *mdio_bus;
135 if (hdev->hw.mac.phy_addr >= PHY_MAX_ADDR) {
136 dev_err(&hdev->pdev->dev, "phy_addr(%d) is too large.\n",
137 hdev->hw.mac.phy_addr);
141 mdio_bus = devm_mdiobus_alloc(&hdev->pdev->dev);
145 mdio_bus->name = "hisilicon MII bus";
146 mdio_bus->read = hclge_mdio_read;
147 mdio_bus->write = hclge_mdio_write;
148 snprintf(mdio_bus->id, MII_BUS_ID_SIZE, "%s-%s", "mii",
149 dev_name(&hdev->pdev->dev));
151 mdio_bus->parent = &hdev->pdev->dev;
152 mdio_bus->priv = hdev;
153 mdio_bus->phy_mask = ~(1 << mac->phy_addr);
154 ret = mdiobus_register(mdio_bus);
156 dev_err(mdio_bus->parent,
157 "Failed to register MDIO bus ret = %#x\n", ret);
161 phydev = mdiobus_get_phy(mdio_bus, mac->phy_addr);
163 dev_err(mdio_bus->parent, "Failed to get phy device\n");
164 mdiobus_unregister(mdio_bus);
168 mac->phydev = phydev;
169 mac->mdio_bus = mdio_bus;
174 static void hclge_mac_adjust_link(struct net_device *netdev)
176 struct hnae3_handle *h = *((void **)netdev_priv(netdev));
177 struct hclge_vport *vport = hclge_get_vport(h);
178 struct hclge_dev *hdev = vport->back;
182 /* When phy link down, do nothing */
183 if (netdev->phydev->link == 0)
186 speed = netdev->phydev->speed;
187 duplex = netdev->phydev->duplex;
189 ret = hclge_cfg_mac_speed_dup(hdev, speed, duplex);
191 netdev_err(netdev, "failed to adjust link.\n");
193 ret = hclge_cfg_flowctrl(hdev);
195 netdev_err(netdev, "failed to configure flow control.\n");
198 int hclge_mac_connect_phy(struct hclge_dev *hdev)
200 struct net_device *netdev = hdev->vport[0].nic.netdev;
201 struct phy_device *phydev = hdev->hw.mac.phydev;
202 __ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, };
208 linkmode_clear_bit(ETHTOOL_LINK_MODE_FIBRE_BIT, phydev->supported);
210 ret = phy_connect_direct(netdev, phydev,
211 hclge_mac_adjust_link,
212 PHY_INTERFACE_MODE_SGMII);
214 netdev_err(netdev, "phy_connect_direct err.\n");
218 linkmode_set_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, mask);
219 linkmode_set_bit(ETHTOOL_LINK_MODE_TP_BIT, mask);
220 linkmode_set_bit_array(phy_10_100_features_array,
221 ARRAY_SIZE(phy_10_100_features_array),
223 linkmode_set_bit_array(phy_gbit_features_array,
224 ARRAY_SIZE(phy_gbit_features_array),
226 linkmode_and(phydev->supported, phydev->supported, mask);
227 phy_support_asym_pause(phydev);
232 void hclge_mac_disconnect_phy(struct hclge_dev *hdev)
234 struct phy_device *phydev = hdev->hw.mac.phydev;
239 phy_disconnect(phydev);
242 void hclge_mac_start_phy(struct hclge_dev *hdev)
244 struct phy_device *phydev = hdev->hw.mac.phydev;
252 void hclge_mac_stop_phy(struct hclge_dev *hdev)
254 struct net_device *netdev = hdev->vport[0].nic.netdev;
255 struct phy_device *phydev = netdev->phydev;