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15#include "asix.h"
16#include <linux/phy.h>
17
18struct ax88172a_private {
19 struct mii_bus *mdio;
20 struct phy_device *phydev;
21 char phy_name[20];
22 u16 phy_addr;
23 u16 oldmode;
24 int use_embdphy;
25 struct asix_rx_fixup_info rx_fixup_info;
26};
27
28
29static int asix_mdio_bus_read(struct mii_bus *bus, int phy_id, int regnum)
30{
31 return asix_mdio_read(((struct usbnet *)bus->priv)->net, phy_id,
32 regnum);
33}
34
35static int asix_mdio_bus_write(struct mii_bus *bus, int phy_id, int regnum,
36 u16 val)
37{
38 asix_mdio_write(((struct usbnet *)bus->priv)->net, phy_id, regnum, val);
39 return 0;
40}
41
42
43static void ax88172a_adjust_link(struct net_device *netdev)
44{
45 struct phy_device *phydev = netdev->phydev;
46 struct usbnet *dev = netdev_priv(netdev);
47 struct ax88172a_private *priv = dev->driver_priv;
48 u16 mode = 0;
49
50 if (phydev->link) {
51 mode = AX88772_MEDIUM_DEFAULT;
52
53 if (phydev->duplex == DUPLEX_HALF)
54 mode &= ~AX_MEDIUM_FD;
55
56 if (phydev->speed != SPEED_100)
57 mode &= ~AX_MEDIUM_PS;
58 }
59
60 if (mode != priv->oldmode) {
61 asix_write_medium_mode(dev, mode, 0);
62 priv->oldmode = mode;
63 netdev_dbg(netdev, "speed %u duplex %d, setting mode to 0x%04x\n",
64 phydev->speed, phydev->duplex, mode);
65 phy_print_status(phydev);
66 }
67}
68
69static void ax88172a_status(struct usbnet *dev, struct urb *urb)
70{
71
72}
73
74
75static int ax88172a_init_mdio(struct usbnet *dev)
76{
77 struct ax88172a_private *priv = dev->driver_priv;
78 int ret;
79
80 priv->mdio = mdiobus_alloc();
81 if (!priv->mdio) {
82 netdev_err(dev->net, "Could not allocate MDIO bus\n");
83 return -ENOMEM;
84 }
85
86 priv->mdio->priv = (void *)dev;
87 priv->mdio->read = &asix_mdio_bus_read;
88 priv->mdio->write = &asix_mdio_bus_write;
89 priv->mdio->name = "Asix MDIO Bus";
90
91 snprintf(priv->mdio->id, MII_BUS_ID_SIZE, "usb-%03d:%03d",
92 dev->udev->bus->busnum, dev->udev->devnum);
93
94 ret = mdiobus_register(priv->mdio);
95 if (ret) {
96 netdev_err(dev->net, "Could not register MDIO bus\n");
97 goto mfree;
98 }
99
100 netdev_info(dev->net, "registered mdio bus %s\n", priv->mdio->id);
101 return 0;
102
103mfree:
104 mdiobus_free(priv->mdio);
105 return ret;
106}
107
108static void ax88172a_remove_mdio(struct usbnet *dev)
109{
110 struct ax88172a_private *priv = dev->driver_priv;
111
112 netdev_info(dev->net, "deregistering mdio bus %s\n", priv->mdio->id);
113 mdiobus_unregister(priv->mdio);
114 mdiobus_free(priv->mdio);
115}
116
117static const struct net_device_ops ax88172a_netdev_ops = {
118 .ndo_open = usbnet_open,
119 .ndo_stop = usbnet_stop,
120 .ndo_start_xmit = usbnet_start_xmit,
121 .ndo_tx_timeout = usbnet_tx_timeout,
122 .ndo_change_mtu = usbnet_change_mtu,
123 .ndo_get_stats64 = usbnet_get_stats64,
124 .ndo_set_mac_address = asix_set_mac_address,
125 .ndo_validate_addr = eth_validate_addr,
126 .ndo_do_ioctl = phy_do_ioctl_running,
127 .ndo_set_rx_mode = asix_set_multicast,
128};
129
130static const struct ethtool_ops ax88172a_ethtool_ops = {
131 .get_drvinfo = asix_get_drvinfo,
132 .get_link = usbnet_get_link,
133 .get_msglevel = usbnet_get_msglevel,
134 .set_msglevel = usbnet_set_msglevel,
135 .get_wol = asix_get_wol,
136 .set_wol = asix_set_wol,
137 .get_eeprom_len = asix_get_eeprom_len,
138 .get_eeprom = asix_get_eeprom,
139 .set_eeprom = asix_set_eeprom,
140 .nway_reset = phy_ethtool_nway_reset,
141 .get_link_ksettings = phy_ethtool_get_link_ksettings,
142 .set_link_ksettings = phy_ethtool_set_link_ksettings,
143};
144
145static int ax88172a_reset_phy(struct usbnet *dev, int embd_phy)
146{
147 int ret;
148
149 ret = asix_sw_reset(dev, AX_SWRESET_IPPD, 0);
150 if (ret < 0)
151 goto err;
152
153 msleep(150);
154 ret = asix_sw_reset(dev, AX_SWRESET_CLEAR, 0);
155 if (ret < 0)
156 goto err;
157
158 msleep(150);
159
160 ret = asix_sw_reset(dev, embd_phy ? AX_SWRESET_IPRL : AX_SWRESET_IPPD,
161 0);
162 if (ret < 0)
163 goto err;
164
165 return 0;
166
167err:
168 return ret;
169}
170
171
172static int ax88172a_bind(struct usbnet *dev, struct usb_interface *intf)
173{
174 int ret;
175 u8 buf[ETH_ALEN];
176 struct ax88172a_private *priv;
177
178 usbnet_get_endpoints(dev, intf);
179
180 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
181 if (!priv)
182 return -ENOMEM;
183
184 dev->driver_priv = priv;
185
186
187 ret = asix_read_cmd(dev, AX_CMD_READ_NODE_ID, 0, 0, ETH_ALEN, buf, 0);
188 if (ret < ETH_ALEN) {
189 netdev_err(dev->net, "Failed to read MAC address: %d\n", ret);
190 goto free;
191 }
192 memcpy(dev->net->dev_addr, buf, ETH_ALEN);
193
194 dev->net->netdev_ops = &ax88172a_netdev_ops;
195 dev->net->ethtool_ops = &ax88172a_ethtool_ops;
196
197
198 ret = asix_read_cmd(dev, AX_CMD_SW_PHY_STATUS, 0, 0, 1, buf, 0);
199 if (ret < 0) {
200 netdev_err(dev->net, "Failed to read software interface selection register: %d\n",
201 ret);
202 goto free;
203 }
204
205 netdev_dbg(dev->net, "AX_CMD_SW_PHY_STATUS = 0x%02x\n", buf[0]);
206 switch (buf[0] & AX_PHY_SELECT_MASK) {
207 case AX_PHY_SELECT_INTERNAL:
208 netdev_dbg(dev->net, "use internal phy\n");
209 priv->use_embdphy = 1;
210 break;
211 case AX_PHY_SELECT_EXTERNAL:
212 netdev_dbg(dev->net, "use external phy\n");
213 priv->use_embdphy = 0;
214 break;
215 default:
216 netdev_err(dev->net, "Interface mode not supported by driver\n");
217 ret = -ENOTSUPP;
218 goto free;
219 }
220
221 priv->phy_addr = asix_read_phy_addr(dev, priv->use_embdphy);
222 ax88172a_reset_phy(dev, priv->use_embdphy);
223
224
225 if (dev->driver_info->flags & FLAG_FRAMING_AX) {
226
227
228 dev->rx_urb_size = 2048;
229 }
230
231
232 ret = ax88172a_init_mdio(dev);
233 if (ret)
234 goto free;
235
236 return 0;
237
238free:
239 kfree(priv);
240 return ret;
241}
242
243static int ax88172a_stop(struct usbnet *dev)
244{
245 struct ax88172a_private *priv = dev->driver_priv;
246
247 netdev_dbg(dev->net, "Stopping interface\n");
248
249 if (priv->phydev) {
250 netdev_info(dev->net, "Disconnecting from phy %s\n",
251 priv->phy_name);
252 phy_stop(priv->phydev);
253 phy_disconnect(priv->phydev);
254 }
255
256 return 0;
257}
258
259static void ax88172a_unbind(struct usbnet *dev, struct usb_interface *intf)
260{
261 struct ax88172a_private *priv = dev->driver_priv;
262
263 ax88172a_remove_mdio(dev);
264 kfree(priv);
265}
266
267static int ax88172a_reset(struct usbnet *dev)
268{
269 struct asix_data *data = (struct asix_data *)&dev->data;
270 struct ax88172a_private *priv = dev->driver_priv;
271 int ret;
272 u16 rx_ctl;
273
274 ax88172a_reset_phy(dev, priv->use_embdphy);
275
276 msleep(150);
277 rx_ctl = asix_read_rx_ctl(dev, 0);
278 netdev_dbg(dev->net, "RX_CTL is 0x%04x after software reset\n", rx_ctl);
279 ret = asix_write_rx_ctl(dev, 0x0000, 0);
280 if (ret < 0)
281 goto out;
282
283 rx_ctl = asix_read_rx_ctl(dev, 0);
284 netdev_dbg(dev->net, "RX_CTL is 0x%04x setting to 0x0000\n", rx_ctl);
285
286 msleep(150);
287
288 ret = asix_write_cmd(dev, AX_CMD_WRITE_IPG0,
289 AX88772_IPG0_DEFAULT | AX88772_IPG1_DEFAULT,
290 AX88772_IPG2_DEFAULT, 0, NULL, 0);
291 if (ret < 0) {
292 netdev_err(dev->net, "Write IPG,IPG1,IPG2 failed: %d\n", ret);
293 goto out;
294 }
295
296
297 memcpy(data->mac_addr, dev->net->dev_addr, ETH_ALEN);
298 ret = asix_write_cmd(dev, AX_CMD_WRITE_NODE_ID, 0, 0, ETH_ALEN,
299 data->mac_addr, 0);
300 if (ret < 0)
301 goto out;
302
303
304 ret = asix_write_rx_ctl(dev, AX_DEFAULT_RX_CTL, 0);
305 if (ret < 0)
306 goto out;
307
308 rx_ctl = asix_read_rx_ctl(dev, 0);
309 netdev_dbg(dev->net, "RX_CTL is 0x%04x after all initializations\n",
310 rx_ctl);
311
312 rx_ctl = asix_read_medium_status(dev, 0);
313 netdev_dbg(dev->net, "Medium Status is 0x%04x after all initializations\n",
314 rx_ctl);
315
316
317 snprintf(priv->phy_name, 20, PHY_ID_FMT,
318 priv->mdio->id, priv->phy_addr);
319
320 priv->phydev = phy_connect(dev->net, priv->phy_name,
321 &ax88172a_adjust_link,
322 PHY_INTERFACE_MODE_MII);
323 if (IS_ERR(priv->phydev)) {
324 netdev_err(dev->net, "Could not connect to PHY device %s\n",
325 priv->phy_name);
326 ret = PTR_ERR(priv->phydev);
327 goto out;
328 }
329
330 netdev_info(dev->net, "Connected to phy %s\n", priv->phy_name);
331
332
333
334
335 genphy_resume(priv->phydev);
336 phy_start(priv->phydev);
337
338 return 0;
339
340out:
341 return ret;
342
343}
344
345static int ax88172a_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
346{
347 struct ax88172a_private *dp = dev->driver_priv;
348 struct asix_rx_fixup_info *rx = &dp->rx_fixup_info;
349
350 return asix_rx_fixup_internal(dev, skb, rx);
351}
352
353const struct driver_info ax88172a_info = {
354 .description = "ASIX AX88172A USB 2.0 Ethernet",
355 .bind = ax88172a_bind,
356 .reset = ax88172a_reset,
357 .stop = ax88172a_stop,
358 .unbind = ax88172a_unbind,
359 .status = ax88172a_status,
360 .flags = FLAG_ETHER | FLAG_FRAMING_AX | FLAG_LINK_INTR |
361 FLAG_MULTI_PACKET,
362 .rx_fixup = ax88172a_rx_fixup,
363 .tx_fixup = asix_tx_fixup,
364};
365
