1 // SPDX-License-Identifier: GPL-2.0-or-later
9  * Copyright (C) 2003-2006 David Hollis <dhollis@davehollis.com>
12  * Copyright (c) 2002-2003 TiVo Inc.
19 	struct mii_bus *mdio;  member
31 	struct phy_device *phydev = netdev->phydev;  in ax88172a_adjust_link()
33 	struct ax88172a_private *priv = dev->driver_priv;  in ax88172a_adjust_link()
34 	u16 mode = 0;  in ax88172a_adjust_link()
36 	if (phydev->link) {  in ax88172a_adjust_link()
39 		if (phydev->duplex == DUPLEX_HALF)  in ax88172a_adjust_link()
42 		if (phydev->speed != SPEED_100)  in ax88172a_adjust_link()
46 	if (mode != priv->oldmode) {  in ax88172a_adjust_link()
47 		asix_write_medium_mode(dev, mode, 0);  in ax88172a_adjust_link()
48 		priv->oldmode = mode;  in ax88172a_adjust_link()
49 		netdev_dbg(netdev, "speed %u duplex %d, setting mode to 0x%04x\n",  in ax88172a_adjust_link()
50 			   phydev->speed, phydev->duplex, mode);  in ax88172a_adjust_link()
63 	struct ax88172a_private *priv = dev->driver_priv;  in ax88172a_init_mdio()
66 	priv->mdio = mdiobus_alloc();  in ax88172a_init_mdio()
67 	if (!priv->mdio) {  in ax88172a_init_mdio()
68 		netdev_err(dev->net, "Could not allocate MDIO bus\n");  in ax88172a_init_mdio()
69 		return -ENOMEM;  in ax88172a_init_mdio()
72 	priv->mdio->priv = (void *)dev;  in ax88172a_init_mdio()
73 	priv->mdio->read = &asix_mdio_bus_read;  in ax88172a_init_mdio()
74 	priv->mdio->write = &asix_mdio_bus_write;  in ax88172a_init_mdio()
75 	priv->mdio->name = "Asix MDIO Bus";  in ax88172a_init_mdio()
76 	/* mii bus name is usb-<usb bus number>-<usb device number> */  in ax88172a_init_mdio()
77 	snprintf(priv->mdio->id, MII_BUS_ID_SIZE, "usb-%03d:%03d",  in ax88172a_init_mdio()
78 		 dev->udev->bus->busnum, dev->udev->devnum);  in ax88172a_init_mdio()
80 	ret = mdiobus_register(priv->mdio);  in ax88172a_init_mdio()
82 		netdev_err(dev->net, "Could not register MDIO bus\n");  in ax88172a_init_mdio()
86 	netdev_info(dev->net, "registered mdio bus %s\n", priv->mdio->id);  in ax88172a_init_mdio()
87 	return 0;  in ax88172a_init_mdio()
90 	mdiobus_free(priv->mdio);  in ax88172a_init_mdio()
96 	struct ax88172a_private *priv = dev->driver_priv;  in ax88172a_remove_mdio()
98 	netdev_info(dev->net, "deregistering mdio bus %s\n", priv->mdio->id);  in ax88172a_remove_mdio()
99 	mdiobus_unregister(priv->mdio);  in ax88172a_remove_mdio()
100 	mdiobus_free(priv->mdio);  in ax88172a_remove_mdio()
135 	ret = asix_sw_reset(dev, AX_SWRESET_IPPD, 0);  in ax88172a_reset_phy()
136 	if (ret < 0)  in ax88172a_reset_phy()
140 	ret = asix_sw_reset(dev, AX_SWRESET_CLEAR, 0);  in ax88172a_reset_phy()
141 	if (ret < 0)  in ax88172a_reset_phy()
147 			    0);  in ax88172a_reset_phy()
148 	if (ret < 0)  in ax88172a_reset_phy()
151 	return 0;  in ax88172a_reset_phy()
170 		return -ENOMEM;  in ax88172a_bind()
172 	dev->driver_priv = priv;  in ax88172a_bind()
175 	ret = asix_read_cmd(dev, AX_CMD_READ_NODE_ID, 0, 0, ETH_ALEN, buf, 0);  in ax88172a_bind()
177 		netdev_err(dev->net, "Failed to read MAC address: %d\n", ret);  in ax88172a_bind()
178 		ret = -EIO;  in ax88172a_bind()
181 	eth_hw_addr_set(dev->net, buf);  in ax88172a_bind()
183 	dev->net->netdev_ops = &ax88172a_netdev_ops;  in ax88172a_bind()
184 	dev->net->ethtool_ops = &ax88172a_ethtool_ops;  in ax88172a_bind()
187 	ret = asix_read_cmd(dev, AX_CMD_SW_PHY_STATUS, 0, 0, 1, buf, 0);  in ax88172a_bind()
188 	if (ret < 0) {  in ax88172a_bind()
189 		netdev_err(dev->net, "Failed to read software interface selection register: %d\n",  in ax88172a_bind()
194 	netdev_dbg(dev->net, "AX_CMD_SW_PHY_STATUS = 0x%02x\n", buf[0]);  in ax88172a_bind()
195 	switch (buf[0] & AX_PHY_SELECT_MASK) {  in ax88172a_bind()
197 		netdev_dbg(dev->net, "use internal phy\n");  in ax88172a_bind()
198 		priv->use_embdphy = 1;  in ax88172a_bind()
201 		netdev_dbg(dev->net, "use external phy\n");  in ax88172a_bind()
202 		priv->use_embdphy = 0;  in ax88172a_bind()
205 		netdev_err(dev->net, "Interface mode not supported by driver\n");  in ax88172a_bind()
206 		ret = -ENOTSUPP;  in ax88172a_bind()
210 	ret = asix_read_phy_addr(dev, priv->use_embdphy);  in ax88172a_bind()
211 	if (ret < 0)  in ax88172a_bind()
214 		netdev_err(dev->net, "Invalid PHY address %#x\n", ret);  in ax88172a_bind()
215 		ret = -ENODEV;  in ax88172a_bind()
218 	priv->phy_addr = ret;  in ax88172a_bind()
220 	ax88172a_reset_phy(dev, priv->use_embdphy);  in ax88172a_bind()
223 	if (dev->driver_info->flags & FLAG_FRAMING_AX) {  in ax88172a_bind()
224 		/* hard_mtu  is still the default - the device does not support  in ax88172a_bind()
226 		dev->rx_urb_size = 2048;  in ax88172a_bind()
229 	/* init MDIO bus */  in ax88172a_bind()
234 	return 0;  in ax88172a_bind()
243 	struct ax88172a_private *priv = dev->driver_priv;  in ax88172a_stop()
245 	netdev_dbg(dev->net, "Stopping interface\n");  in ax88172a_stop()
247 	if (priv->phydev) {  in ax88172a_stop()
248 		netdev_info(dev->net, "Disconnecting from phy %s\n",  in ax88172a_stop()
249 			    priv->phy_name);  in ax88172a_stop()
250 		phy_stop(priv->phydev);  in ax88172a_stop()
251 		phy_disconnect(priv->phydev);  in ax88172a_stop()
254 	return 0;  in ax88172a_stop()
259 	struct ax88172a_private *priv = dev->driver_priv;  in ax88172a_unbind()
267 	struct asix_data *data = (struct asix_data *)&dev->data;  in ax88172a_reset()
268 	struct ax88172a_private *priv = dev->driver_priv;  in ax88172a_reset()
272 	ax88172a_reset_phy(dev, priv->use_embdphy);  in ax88172a_reset()
275 	rx_ctl = asix_read_rx_ctl(dev, 0);  in ax88172a_reset()
276 	netdev_dbg(dev->net, "RX_CTL is 0x%04x after software reset\n", rx_ctl);  in ax88172a_reset()
277 	ret = asix_write_rx_ctl(dev, 0x0000, 0);  in ax88172a_reset()
278 	if (ret < 0)  in ax88172a_reset()
281 	rx_ctl = asix_read_rx_ctl(dev, 0);  in ax88172a_reset()
282 	netdev_dbg(dev->net, "RX_CTL is 0x%04x setting to 0x0000\n", rx_ctl);  in ax88172a_reset()
288 			     AX88772_IPG2_DEFAULT, 0, NULL, 0);  in ax88172a_reset()
289 	if (ret < 0) {  in ax88172a_reset()
290 		netdev_err(dev->net, "Write IPG,IPG1,IPG2 failed: %d\n", ret);  in ax88172a_reset()
295 	memcpy(data->mac_addr, dev->net->dev_addr, ETH_ALEN);  in ax88172a_reset()
296 	ret = asix_write_cmd(dev, AX_CMD_WRITE_NODE_ID, 0, 0, ETH_ALEN,  in ax88172a_reset()
297 			     data->mac_addr, 0);  in ax88172a_reset()
298 	if (ret < 0)  in ax88172a_reset()
302 	ret = asix_write_rx_ctl(dev, AX_DEFAULT_RX_CTL, 0);  in ax88172a_reset()
303 	if (ret < 0)  in ax88172a_reset()
306 	rx_ctl = asix_read_rx_ctl(dev, 0);  in ax88172a_reset()
307 	netdev_dbg(dev->net, "RX_CTL is 0x%04x after all initializations\n",  in ax88172a_reset()
310 	rx_ctl = asix_read_medium_status(dev, 0);  in ax88172a_reset()
311 	netdev_dbg(dev->net, "Medium Status is 0x%04x after all initializations\n",  in ax88172a_reset()
315 	snprintf(priv->phy_name, sizeof(priv->phy_name), PHY_ID_FMT,  in ax88172a_reset()
316 		 priv->mdio->id, priv->phy_addr);  in ax88172a_reset()
318 	priv->phydev = phy_connect(dev->net, priv->phy_name,  in ax88172a_reset()
321 	if (IS_ERR(priv->phydev)) {  in ax88172a_reset()
322 		netdev_err(dev->net, "Could not connect to PHY device %s\n",  in ax88172a_reset()
323 			   priv->phy_name);  in ax88172a_reset()
324 		ret = PTR_ERR(priv->phydev);  in ax88172a_reset()
328 	netdev_info(dev->net, "Connected to phy %s\n", priv->phy_name);  in ax88172a_reset()
330 	/* During power-up, the AX88172A set the power down (BMCR_PDOWN)  in ax88172a_reset()
333 	genphy_resume(priv->phydev);  in ax88172a_reset()
334 	phy_start(priv->phydev);  in ax88172a_reset()
336 	return 0;  in ax88172a_reset()
345 	struct ax88172a_private *dp = dev->driver_priv;  in ax88172a_rx_fixup()
346 	struct asix_rx_fixup_info *rx = &dp->rx_fixup_info;  in ax88172a_rx_fixup()