Version:  2.0.40 2.2.26 2.4.37 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18

Linux/drivers/net/usb/asix_devices.c

  1 /*
  2  * ASIX AX8817X based USB 2.0 Ethernet Devices
  3  * Copyright (C) 2003-2006 David Hollis <dhollis@davehollis.com>
  4  * Copyright (C) 2005 Phil Chang <pchang23@sbcglobal.net>
  5  * Copyright (C) 2006 James Painter <jamie.painter@iname.com>
  6  * Copyright (c) 2002-2003 TiVo Inc.
  7  *
  8  * This program is free software; you can redistribute it and/or modify
  9  * it under the terms of the GNU General Public License as published by
 10  * the Free Software Foundation; either version 2 of the License, or
 11  * (at your option) any later version.
 12  *
 13  * This program is distributed in the hope that it will be useful,
 14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
 15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 16  * GNU General Public License for more details.
 17  *
 18  * You should have received a copy of the GNU General Public License
 19  * along with this program; if not, see <http://www.gnu.org/licenses/>.
 20  */
 21 
 22 #include "asix.h"
 23 
 24 #define PHY_MODE_MARVELL        0x0000
 25 #define MII_MARVELL_LED_CTRL    0x0018
 26 #define MII_MARVELL_STATUS      0x001b
 27 #define MII_MARVELL_CTRL        0x0014
 28 
 29 #define MARVELL_LED_MANUAL      0x0019
 30 
 31 #define MARVELL_STATUS_HWCFG    0x0004
 32 
 33 #define MARVELL_CTRL_TXDELAY    0x0002
 34 #define MARVELL_CTRL_RXDELAY    0x0080
 35 
 36 #define PHY_MODE_RTL8211CL      0x000C
 37 
 38 struct ax88172_int_data {
 39         __le16 res1;
 40         u8 link;
 41         __le16 res2;
 42         u8 status;
 43         __le16 res3;
 44 } __packed;
 45 
 46 static void asix_status(struct usbnet *dev, struct urb *urb)
 47 {
 48         struct ax88172_int_data *event;
 49         int link;
 50 
 51         if (urb->actual_length < 8)
 52                 return;
 53 
 54         event = urb->transfer_buffer;
 55         link = event->link & 0x01;
 56         if (netif_carrier_ok(dev->net) != link) {
 57                 usbnet_link_change(dev, link, 1);
 58                 netdev_dbg(dev->net, "Link Status is: %d\n", link);
 59         }
 60 }
 61 
 62 static void asix_set_netdev_dev_addr(struct usbnet *dev, u8 *addr)
 63 {
 64         if (is_valid_ether_addr(addr)) {
 65                 memcpy(dev->net->dev_addr, addr, ETH_ALEN);
 66         } else {
 67                 netdev_info(dev->net, "invalid hw address, using random\n");
 68                 eth_hw_addr_random(dev->net);
 69         }
 70 }
 71 
 72 /* Get the PHY Identifier from the PHYSID1 & PHYSID2 MII registers */
 73 static u32 asix_get_phyid(struct usbnet *dev)
 74 {
 75         int phy_reg;
 76         u32 phy_id;
 77         int i;
 78 
 79         /* Poll for the rare case the FW or phy isn't ready yet.  */
 80         for (i = 0; i < 100; i++) {
 81                 phy_reg = asix_mdio_read(dev->net, dev->mii.phy_id, MII_PHYSID1);
 82                 if (phy_reg != 0 && phy_reg != 0xFFFF)
 83                         break;
 84                 mdelay(1);
 85         }
 86 
 87         if (phy_reg <= 0 || phy_reg == 0xFFFF)
 88                 return 0;
 89 
 90         phy_id = (phy_reg & 0xffff) << 16;
 91 
 92         phy_reg = asix_mdio_read(dev->net, dev->mii.phy_id, MII_PHYSID2);
 93         if (phy_reg < 0)
 94                 return 0;
 95 
 96         phy_id |= (phy_reg & 0xffff);
 97 
 98         return phy_id;
 99 }
100 
101 static u32 asix_get_link(struct net_device *net)
102 {
103         struct usbnet *dev = netdev_priv(net);
104 
105         return mii_link_ok(&dev->mii);
106 }
107 
108 static int asix_ioctl (struct net_device *net, struct ifreq *rq, int cmd)
109 {
110         struct usbnet *dev = netdev_priv(net);
111 
112         return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
113 }
114 
115 /* We need to override some ethtool_ops so we require our
116    own structure so we don't interfere with other usbnet
117    devices that may be connected at the same time. */
118 static const struct ethtool_ops ax88172_ethtool_ops = {
119         .get_drvinfo            = asix_get_drvinfo,
120         .get_link               = asix_get_link,
121         .get_msglevel           = usbnet_get_msglevel,
122         .set_msglevel           = usbnet_set_msglevel,
123         .get_wol                = asix_get_wol,
124         .set_wol                = asix_set_wol,
125         .get_eeprom_len         = asix_get_eeprom_len,
126         .get_eeprom             = asix_get_eeprom,
127         .set_eeprom             = asix_set_eeprom,
128         .get_settings           = usbnet_get_settings,
129         .set_settings           = usbnet_set_settings,
130         .nway_reset             = usbnet_nway_reset,
131 };
132 
133 static void ax88172_set_multicast(struct net_device *net)
134 {
135         struct usbnet *dev = netdev_priv(net);
136         struct asix_data *data = (struct asix_data *)&dev->data;
137         u8 rx_ctl = 0x8c;
138 
139         if (net->flags & IFF_PROMISC) {
140                 rx_ctl |= 0x01;
141         } else if (net->flags & IFF_ALLMULTI ||
142                    netdev_mc_count(net) > AX_MAX_MCAST) {
143                 rx_ctl |= 0x02;
144         } else if (netdev_mc_empty(net)) {
145                 /* just broadcast and directed */
146         } else {
147                 /* We use the 20 byte dev->data
148                  * for our 8 byte filter buffer
149                  * to avoid allocating memory that
150                  * is tricky to free later */
151                 struct netdev_hw_addr *ha;
152                 u32 crc_bits;
153 
154                 memset(data->multi_filter, 0, AX_MCAST_FILTER_SIZE);
155 
156                 /* Build the multicast hash filter. */
157                 netdev_for_each_mc_addr(ha, net) {
158                         crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26;
159                         data->multi_filter[crc_bits >> 3] |=
160                             1 << (crc_bits & 7);
161                 }
162 
163                 asix_write_cmd_async(dev, AX_CMD_WRITE_MULTI_FILTER, 0, 0,
164                                    AX_MCAST_FILTER_SIZE, data->multi_filter);
165 
166                 rx_ctl |= 0x10;
167         }
168 
169         asix_write_cmd_async(dev, AX_CMD_WRITE_RX_CTL, rx_ctl, 0, 0, NULL);
170 }
171 
172 static int ax88172_link_reset(struct usbnet *dev)
173 {
174         u8 mode;
175         struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET };
176 
177         mii_check_media(&dev->mii, 1, 1);
178         mii_ethtool_gset(&dev->mii, &ecmd);
179         mode = AX88172_MEDIUM_DEFAULT;
180 
181         if (ecmd.duplex != DUPLEX_FULL)
182                 mode |= ~AX88172_MEDIUM_FD;
183 
184         netdev_dbg(dev->net, "ax88172_link_reset() speed: %u duplex: %d setting mode to 0x%04x\n",
185                    ethtool_cmd_speed(&ecmd), ecmd.duplex, mode);
186 
187         asix_write_medium_mode(dev, mode);
188 
189         return 0;
190 }
191 
192 static const struct net_device_ops ax88172_netdev_ops = {
193         .ndo_open               = usbnet_open,
194         .ndo_stop               = usbnet_stop,
195         .ndo_start_xmit         = usbnet_start_xmit,
196         .ndo_tx_timeout         = usbnet_tx_timeout,
197         .ndo_change_mtu         = usbnet_change_mtu,
198         .ndo_set_mac_address    = eth_mac_addr,
199         .ndo_validate_addr      = eth_validate_addr,
200         .ndo_do_ioctl           = asix_ioctl,
201         .ndo_set_rx_mode        = ax88172_set_multicast,
202 };
203 
204 static int ax88172_bind(struct usbnet *dev, struct usb_interface *intf)
205 {
206         int ret = 0;
207         u8 buf[ETH_ALEN];
208         int i;
209         unsigned long gpio_bits = dev->driver_info->data;
210 
211         usbnet_get_endpoints(dev,intf);
212 
213         /* Toggle the GPIOs in a manufacturer/model specific way */
214         for (i = 2; i >= 0; i--) {
215                 ret = asix_write_cmd(dev, AX_CMD_WRITE_GPIOS,
216                                 (gpio_bits >> (i * 8)) & 0xff, 0, 0, NULL);
217                 if (ret < 0)
218                         goto out;
219                 msleep(5);
220         }
221 
222         ret = asix_write_rx_ctl(dev, 0x80);
223         if (ret < 0)
224                 goto out;
225 
226         /* Get the MAC address */
227         ret = asix_read_cmd(dev, AX88172_CMD_READ_NODE_ID, 0, 0, ETH_ALEN, buf);
228         if (ret < 0) {
229                 netdev_dbg(dev->net, "read AX_CMD_READ_NODE_ID failed: %d\n",
230                            ret);
231                 goto out;
232         }
233 
234         asix_set_netdev_dev_addr(dev, buf);
235 
236         /* Initialize MII structure */
237         dev->mii.dev = dev->net;
238         dev->mii.mdio_read = asix_mdio_read;
239         dev->mii.mdio_write = asix_mdio_write;
240         dev->mii.phy_id_mask = 0x3f;
241         dev->mii.reg_num_mask = 0x1f;
242         dev->mii.phy_id = asix_get_phy_addr(dev);
243 
244         dev->net->netdev_ops = &ax88172_netdev_ops;
245         dev->net->ethtool_ops = &ax88172_ethtool_ops;
246         dev->net->needed_headroom = 4; /* cf asix_tx_fixup() */
247         dev->net->needed_tailroom = 4; /* cf asix_tx_fixup() */
248 
249         asix_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET);
250         asix_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
251                 ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP);
252         mii_nway_restart(&dev->mii);
253 
254         return 0;
255 
256 out:
257         return ret;
258 }
259 
260 static const struct ethtool_ops ax88772_ethtool_ops = {
261         .get_drvinfo            = asix_get_drvinfo,
262         .get_link               = asix_get_link,
263         .get_msglevel           = usbnet_get_msglevel,
264         .set_msglevel           = usbnet_set_msglevel,
265         .get_wol                = asix_get_wol,
266         .set_wol                = asix_set_wol,
267         .get_eeprom_len         = asix_get_eeprom_len,
268         .get_eeprom             = asix_get_eeprom,
269         .set_eeprom             = asix_set_eeprom,
270         .get_settings           = usbnet_get_settings,
271         .set_settings           = usbnet_set_settings,
272         .nway_reset             = usbnet_nway_reset,
273 };
274 
275 static int ax88772_link_reset(struct usbnet *dev)
276 {
277         u16 mode;
278         struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET };
279 
280         mii_check_media(&dev->mii, 1, 1);
281         mii_ethtool_gset(&dev->mii, &ecmd);
282         mode = AX88772_MEDIUM_DEFAULT;
283 
284         if (ethtool_cmd_speed(&ecmd) != SPEED_100)
285                 mode &= ~AX_MEDIUM_PS;
286 
287         if (ecmd.duplex != DUPLEX_FULL)
288                 mode &= ~AX_MEDIUM_FD;
289 
290         netdev_dbg(dev->net, "ax88772_link_reset() speed: %u duplex: %d setting mode to 0x%04x\n",
291                    ethtool_cmd_speed(&ecmd), ecmd.duplex, mode);
292 
293         asix_write_medium_mode(dev, mode);
294 
295         return 0;
296 }
297 
298 static int ax88772_reset(struct usbnet *dev)
299 {
300         struct asix_data *data = (struct asix_data *)&dev->data;
301         int ret, embd_phy;
302         u16 rx_ctl;
303 
304         ret = asix_write_gpio(dev,
305                         AX_GPIO_RSE | AX_GPIO_GPO_2 | AX_GPIO_GPO2EN, 5);
306         if (ret < 0)
307                 goto out;
308 
309         embd_phy = ((asix_get_phy_addr(dev) & 0x1f) == 0x10 ? 1 : 0);
310 
311         ret = asix_write_cmd(dev, AX_CMD_SW_PHY_SELECT, embd_phy, 0, 0, NULL);
312         if (ret < 0) {
313                 netdev_dbg(dev->net, "Select PHY #1 failed: %d\n", ret);
314                 goto out;
315         }
316 
317         ret = asix_sw_reset(dev, AX_SWRESET_IPPD | AX_SWRESET_PRL);
318         if (ret < 0)
319                 goto out;
320 
321         msleep(150);
322 
323         ret = asix_sw_reset(dev, AX_SWRESET_CLEAR);
324         if (ret < 0)
325                 goto out;
326 
327         msleep(150);
328 
329         if (embd_phy) {
330                 ret = asix_sw_reset(dev, AX_SWRESET_IPRL);
331                 if (ret < 0)
332                         goto out;
333         } else {
334                 ret = asix_sw_reset(dev, AX_SWRESET_PRTE);
335                 if (ret < 0)
336                         goto out;
337         }
338 
339         msleep(150);
340         rx_ctl = asix_read_rx_ctl(dev);
341         netdev_dbg(dev->net, "RX_CTL is 0x%04x after software reset\n", rx_ctl);
342         ret = asix_write_rx_ctl(dev, 0x0000);
343         if (ret < 0)
344                 goto out;
345 
346         rx_ctl = asix_read_rx_ctl(dev);
347         netdev_dbg(dev->net, "RX_CTL is 0x%04x setting to 0x0000\n", rx_ctl);
348 
349         ret = asix_sw_reset(dev, AX_SWRESET_PRL);
350         if (ret < 0)
351                 goto out;
352 
353         msleep(150);
354 
355         ret = asix_sw_reset(dev, AX_SWRESET_IPRL | AX_SWRESET_PRL);
356         if (ret < 0)
357                 goto out;
358 
359         msleep(150);
360 
361         asix_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET);
362         asix_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
363                         ADVERTISE_ALL | ADVERTISE_CSMA);
364         mii_nway_restart(&dev->mii);
365 
366         ret = asix_write_medium_mode(dev, AX88772_MEDIUM_DEFAULT);
367         if (ret < 0)
368                 goto out;
369 
370         ret = asix_write_cmd(dev, AX_CMD_WRITE_IPG0,
371                                 AX88772_IPG0_DEFAULT | AX88772_IPG1_DEFAULT,
372                                 AX88772_IPG2_DEFAULT, 0, NULL);
373         if (ret < 0) {
374                 netdev_dbg(dev->net, "Write IPG,IPG1,IPG2 failed: %d\n", ret);
375                 goto out;
376         }
377 
378         /* Rewrite MAC address */
379         memcpy(data->mac_addr, dev->net->dev_addr, ETH_ALEN);
380         ret = asix_write_cmd(dev, AX_CMD_WRITE_NODE_ID, 0, 0, ETH_ALEN,
381                                                         data->mac_addr);
382         if (ret < 0)
383                 goto out;
384 
385         /* Set RX_CTL to default values with 2k buffer, and enable cactus */
386         ret = asix_write_rx_ctl(dev, AX_DEFAULT_RX_CTL);
387         if (ret < 0)
388                 goto out;
389 
390         rx_ctl = asix_read_rx_ctl(dev);
391         netdev_dbg(dev->net, "RX_CTL is 0x%04x after all initializations\n",
392                    rx_ctl);
393 
394         rx_ctl = asix_read_medium_status(dev);
395         netdev_dbg(dev->net,
396                    "Medium Status is 0x%04x after all initializations\n",
397                    rx_ctl);
398 
399         return 0;
400 
401 out:
402         return ret;
403 
404 }
405 
406 static const struct net_device_ops ax88772_netdev_ops = {
407         .ndo_open               = usbnet_open,
408         .ndo_stop               = usbnet_stop,
409         .ndo_start_xmit         = usbnet_start_xmit,
410         .ndo_tx_timeout         = usbnet_tx_timeout,
411         .ndo_change_mtu         = usbnet_change_mtu,
412         .ndo_set_mac_address    = asix_set_mac_address,
413         .ndo_validate_addr      = eth_validate_addr,
414         .ndo_do_ioctl           = asix_ioctl,
415         .ndo_set_rx_mode        = asix_set_multicast,
416 };
417 
418 static int ax88772_bind(struct usbnet *dev, struct usb_interface *intf)
419 {
420         int ret, embd_phy, i;
421         u8 buf[ETH_ALEN];
422         u32 phyid;
423 
424         usbnet_get_endpoints(dev,intf);
425 
426         /* Get the MAC address */
427         if (dev->driver_info->data & FLAG_EEPROM_MAC) {
428                 for (i = 0; i < (ETH_ALEN >> 1); i++) {
429                         ret = asix_read_cmd(dev, AX_CMD_READ_EEPROM, 0x04 + i,
430                                         0, 2, buf + i * 2);
431                         if (ret < 0)
432                                 break;
433                 }
434         } else {
435                 ret = asix_read_cmd(dev, AX_CMD_READ_NODE_ID,
436                                 0, 0, ETH_ALEN, buf);
437         }
438 
439         if (ret < 0) {
440                 netdev_dbg(dev->net, "Failed to read MAC address: %d\n", ret);
441                 return ret;
442         }
443 
444         asix_set_netdev_dev_addr(dev, buf);
445 
446         /* Initialize MII structure */
447         dev->mii.dev = dev->net;
448         dev->mii.mdio_read = asix_mdio_read;
449         dev->mii.mdio_write = asix_mdio_write;
450         dev->mii.phy_id_mask = 0x1f;
451         dev->mii.reg_num_mask = 0x1f;
452         dev->mii.phy_id = asix_get_phy_addr(dev);
453 
454         dev->net->netdev_ops = &ax88772_netdev_ops;
455         dev->net->ethtool_ops = &ax88772_ethtool_ops;
456         dev->net->needed_headroom = 4; /* cf asix_tx_fixup() */
457         dev->net->needed_tailroom = 4; /* cf asix_tx_fixup() */
458 
459         embd_phy = ((dev->mii.phy_id & 0x1f) == 0x10 ? 1 : 0);
460 
461         /* Reset the PHY to normal operation mode */
462         ret = asix_write_cmd(dev, AX_CMD_SW_PHY_SELECT, embd_phy, 0, 0, NULL);
463         if (ret < 0) {
464                 netdev_dbg(dev->net, "Select PHY #1 failed: %d\n", ret);
465                 return ret;
466         }
467 
468         ax88772_reset(dev);
469 
470         /* Read PHYID register *AFTER* the PHY was reset properly */
471         phyid = asix_get_phyid(dev);
472         netdev_dbg(dev->net, "PHYID=0x%08x\n", phyid);
473 
474         /* Asix framing packs multiple eth frames into a 2K usb bulk transfer */
475         if (dev->driver_info->flags & FLAG_FRAMING_AX) {
476                 /* hard_mtu  is still the default - the device does not support
477                    jumbo eth frames */
478                 dev->rx_urb_size = 2048;
479         }
480 
481         dev->driver_priv = kzalloc(sizeof(struct asix_common_private), GFP_KERNEL);
482         if (!dev->driver_priv)
483                 return -ENOMEM;
484 
485         return 0;
486 }
487 
488 static void ax88772_unbind(struct usbnet *dev, struct usb_interface *intf)
489 {
490         if (dev->driver_priv)
491                 kfree(dev->driver_priv);
492 }
493 
494 static const struct ethtool_ops ax88178_ethtool_ops = {
495         .get_drvinfo            = asix_get_drvinfo,
496         .get_link               = asix_get_link,
497         .get_msglevel           = usbnet_get_msglevel,
498         .set_msglevel           = usbnet_set_msglevel,
499         .get_wol                = asix_get_wol,
500         .set_wol                = asix_set_wol,
501         .get_eeprom_len         = asix_get_eeprom_len,
502         .get_eeprom             = asix_get_eeprom,
503         .set_eeprom             = asix_set_eeprom,
504         .get_settings           = usbnet_get_settings,
505         .set_settings           = usbnet_set_settings,
506         .nway_reset             = usbnet_nway_reset,
507 };
508 
509 static int marvell_phy_init(struct usbnet *dev)
510 {
511         struct asix_data *data = (struct asix_data *)&dev->data;
512         u16 reg;
513 
514         netdev_dbg(dev->net, "marvell_phy_init()\n");
515 
516         reg = asix_mdio_read(dev->net, dev->mii.phy_id, MII_MARVELL_STATUS);
517         netdev_dbg(dev->net, "MII_MARVELL_STATUS = 0x%04x\n", reg);
518 
519         asix_mdio_write(dev->net, dev->mii.phy_id, MII_MARVELL_CTRL,
520                         MARVELL_CTRL_RXDELAY | MARVELL_CTRL_TXDELAY);
521 
522         if (data->ledmode) {
523                 reg = asix_mdio_read(dev->net, dev->mii.phy_id,
524                         MII_MARVELL_LED_CTRL);
525                 netdev_dbg(dev->net, "MII_MARVELL_LED_CTRL (1) = 0x%04x\n", reg);
526 
527                 reg &= 0xf8ff;
528                 reg |= (1 + 0x0100);
529                 asix_mdio_write(dev->net, dev->mii.phy_id,
530                         MII_MARVELL_LED_CTRL, reg);
531 
532                 reg = asix_mdio_read(dev->net, dev->mii.phy_id,
533                         MII_MARVELL_LED_CTRL);
534                 netdev_dbg(dev->net, "MII_MARVELL_LED_CTRL (2) = 0x%04x\n", reg);
535                 reg &= 0xfc0f;
536         }
537 
538         return 0;
539 }
540 
541 static int rtl8211cl_phy_init(struct usbnet *dev)
542 {
543         struct asix_data *data = (struct asix_data *)&dev->data;
544 
545         netdev_dbg(dev->net, "rtl8211cl_phy_init()\n");
546 
547         asix_mdio_write (dev->net, dev->mii.phy_id, 0x1f, 0x0005);
548         asix_mdio_write (dev->net, dev->mii.phy_id, 0x0c, 0);
549         asix_mdio_write (dev->net, dev->mii.phy_id, 0x01,
550                 asix_mdio_read (dev->net, dev->mii.phy_id, 0x01) | 0x0080);
551         asix_mdio_write (dev->net, dev->mii.phy_id, 0x1f, 0);
552 
553         if (data->ledmode == 12) {
554                 asix_mdio_write (dev->net, dev->mii.phy_id, 0x1f, 0x0002);
555                 asix_mdio_write (dev->net, dev->mii.phy_id, 0x1a, 0x00cb);
556                 asix_mdio_write (dev->net, dev->mii.phy_id, 0x1f, 0);
557         }
558 
559         return 0;
560 }
561 
562 static int marvell_led_status(struct usbnet *dev, u16 speed)
563 {
564         u16 reg = asix_mdio_read(dev->net, dev->mii.phy_id, MARVELL_LED_MANUAL);
565 
566         netdev_dbg(dev->net, "marvell_led_status() read 0x%04x\n", reg);
567 
568         /* Clear out the center LED bits - 0x03F0 */
569         reg &= 0xfc0f;
570 
571         switch (speed) {
572                 case SPEED_1000:
573                         reg |= 0x03e0;
574                         break;
575                 case SPEED_100:
576                         reg |= 0x03b0;
577                         break;
578                 default:
579                         reg |= 0x02f0;
580         }
581 
582         netdev_dbg(dev->net, "marvell_led_status() writing 0x%04x\n", reg);
583         asix_mdio_write(dev->net, dev->mii.phy_id, MARVELL_LED_MANUAL, reg);
584 
585         return 0;
586 }
587 
588 static int ax88178_reset(struct usbnet *dev)
589 {
590         struct asix_data *data = (struct asix_data *)&dev->data;
591         int ret;
592         __le16 eeprom;
593         u8 status;
594         int gpio0 = 0;
595         u32 phyid;
596 
597         asix_read_cmd(dev, AX_CMD_READ_GPIOS, 0, 0, 1, &status);
598         netdev_dbg(dev->net, "GPIO Status: 0x%04x\n", status);
599 
600         asix_write_cmd(dev, AX_CMD_WRITE_ENABLE, 0, 0, 0, NULL);
601         asix_read_cmd(dev, AX_CMD_READ_EEPROM, 0x0017, 0, 2, &eeprom);
602         asix_write_cmd(dev, AX_CMD_WRITE_DISABLE, 0, 0, 0, NULL);
603 
604         netdev_dbg(dev->net, "EEPROM index 0x17 is 0x%04x\n", eeprom);
605 
606         if (eeprom == cpu_to_le16(0xffff)) {
607                 data->phymode = PHY_MODE_MARVELL;
608                 data->ledmode = 0;
609                 gpio0 = 1;
610         } else {
611                 data->phymode = le16_to_cpu(eeprom) & 0x7F;
612                 data->ledmode = le16_to_cpu(eeprom) >> 8;
613                 gpio0 = (le16_to_cpu(eeprom) & 0x80) ? 0 : 1;
614         }
615         netdev_dbg(dev->net, "GPIO0: %d, PhyMode: %d\n", gpio0, data->phymode);
616 
617         /* Power up external GigaPHY through AX88178 GPIO pin */
618         asix_write_gpio(dev, AX_GPIO_RSE | AX_GPIO_GPO_1 | AX_GPIO_GPO1EN, 40);
619         if ((le16_to_cpu(eeprom) >> 8) != 1) {
620                 asix_write_gpio(dev, 0x003c, 30);
621                 asix_write_gpio(dev, 0x001c, 300);
622                 asix_write_gpio(dev, 0x003c, 30);
623         } else {
624                 netdev_dbg(dev->net, "gpio phymode == 1 path\n");
625                 asix_write_gpio(dev, AX_GPIO_GPO1EN, 30);
626                 asix_write_gpio(dev, AX_GPIO_GPO1EN | AX_GPIO_GPO_1, 30);
627         }
628 
629         /* Read PHYID register *AFTER* powering up PHY */
630         phyid = asix_get_phyid(dev);
631         netdev_dbg(dev->net, "PHYID=0x%08x\n", phyid);
632 
633         /* Set AX88178 to enable MII/GMII/RGMII interface for external PHY */
634         asix_write_cmd(dev, AX_CMD_SW_PHY_SELECT, 0, 0, 0, NULL);
635 
636         asix_sw_reset(dev, 0);
637         msleep(150);
638 
639         asix_sw_reset(dev, AX_SWRESET_PRL | AX_SWRESET_IPPD);
640         msleep(150);
641 
642         asix_write_rx_ctl(dev, 0);
643 
644         if (data->phymode == PHY_MODE_MARVELL) {
645                 marvell_phy_init(dev);
646                 msleep(60);
647         } else if (data->phymode == PHY_MODE_RTL8211CL)
648                 rtl8211cl_phy_init(dev);
649 
650         asix_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR,
651                         BMCR_RESET | BMCR_ANENABLE);
652         asix_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
653                         ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP);
654         asix_mdio_write(dev->net, dev->mii.phy_id, MII_CTRL1000,
655                         ADVERTISE_1000FULL);
656 
657         mii_nway_restart(&dev->mii);
658 
659         ret = asix_write_medium_mode(dev, AX88178_MEDIUM_DEFAULT);
660         if (ret < 0)
661                 return ret;
662 
663         /* Rewrite MAC address */
664         memcpy(data->mac_addr, dev->net->dev_addr, ETH_ALEN);
665         ret = asix_write_cmd(dev, AX_CMD_WRITE_NODE_ID, 0, 0, ETH_ALEN,
666                                                         data->mac_addr);
667         if (ret < 0)
668                 return ret;
669 
670         ret = asix_write_rx_ctl(dev, AX_DEFAULT_RX_CTL);
671         if (ret < 0)
672                 return ret;
673 
674         return 0;
675 }
676 
677 static int ax88178_link_reset(struct usbnet *dev)
678 {
679         u16 mode;
680         struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET };
681         struct asix_data *data = (struct asix_data *)&dev->data;
682         u32 speed;
683 
684         netdev_dbg(dev->net, "ax88178_link_reset()\n");
685 
686         mii_check_media(&dev->mii, 1, 1);
687         mii_ethtool_gset(&dev->mii, &ecmd);
688         mode = AX88178_MEDIUM_DEFAULT;
689         speed = ethtool_cmd_speed(&ecmd);
690 
691         if (speed == SPEED_1000)
692                 mode |= AX_MEDIUM_GM;
693         else if (speed == SPEED_100)
694                 mode |= AX_MEDIUM_PS;
695         else
696                 mode &= ~(AX_MEDIUM_PS | AX_MEDIUM_GM);
697 
698         mode |= AX_MEDIUM_ENCK;
699 
700         if (ecmd.duplex == DUPLEX_FULL)
701                 mode |= AX_MEDIUM_FD;
702         else
703                 mode &= ~AX_MEDIUM_FD;
704 
705         netdev_dbg(dev->net, "ax88178_link_reset() speed: %u duplex: %d setting mode to 0x%04x\n",
706                    speed, ecmd.duplex, mode);
707 
708         asix_write_medium_mode(dev, mode);
709 
710         if (data->phymode == PHY_MODE_MARVELL && data->ledmode)
711                 marvell_led_status(dev, speed);
712 
713         return 0;
714 }
715 
716 static void ax88178_set_mfb(struct usbnet *dev)
717 {
718         u16 mfb = AX_RX_CTL_MFB_16384;
719         u16 rxctl;
720         u16 medium;
721         int old_rx_urb_size = dev->rx_urb_size;
722 
723         if (dev->hard_mtu < 2048) {
724                 dev->rx_urb_size = 2048;
725                 mfb = AX_RX_CTL_MFB_2048;
726         } else if (dev->hard_mtu < 4096) {
727                 dev->rx_urb_size = 4096;
728                 mfb = AX_RX_CTL_MFB_4096;
729         } else if (dev->hard_mtu < 8192) {
730                 dev->rx_urb_size = 8192;
731                 mfb = AX_RX_CTL_MFB_8192;
732         } else if (dev->hard_mtu < 16384) {
733                 dev->rx_urb_size = 16384;
734                 mfb = AX_RX_CTL_MFB_16384;
735         }
736 
737         rxctl = asix_read_rx_ctl(dev);
738         asix_write_rx_ctl(dev, (rxctl & ~AX_RX_CTL_MFB_16384) | mfb);
739 
740         medium = asix_read_medium_status(dev);
741         if (dev->net->mtu > 1500)
742                 medium |= AX_MEDIUM_JFE;
743         else
744                 medium &= ~AX_MEDIUM_JFE;
745         asix_write_medium_mode(dev, medium);
746 
747         if (dev->rx_urb_size > old_rx_urb_size)
748                 usbnet_unlink_rx_urbs(dev);
749 }
750 
751 static int ax88178_change_mtu(struct net_device *net, int new_mtu)
752 {
753         struct usbnet *dev = netdev_priv(net);
754         int ll_mtu = new_mtu + net->hard_header_len + 4;
755 
756         netdev_dbg(dev->net, "ax88178_change_mtu() new_mtu=%d\n", new_mtu);
757 
758         if (new_mtu <= 0 || ll_mtu > 16384)
759                 return -EINVAL;
760 
761         if ((ll_mtu % dev->maxpacket) == 0)
762                 return -EDOM;
763 
764         net->mtu = new_mtu;
765         dev->hard_mtu = net->mtu + net->hard_header_len;
766         ax88178_set_mfb(dev);
767 
768         /* max qlen depend on hard_mtu and rx_urb_size */
769         usbnet_update_max_qlen(dev);
770 
771         return 0;
772 }
773 
774 static const struct net_device_ops ax88178_netdev_ops = {
775         .ndo_open               = usbnet_open,
776         .ndo_stop               = usbnet_stop,
777         .ndo_start_xmit         = usbnet_start_xmit,
778         .ndo_tx_timeout         = usbnet_tx_timeout,
779         .ndo_set_mac_address    = asix_set_mac_address,
780         .ndo_validate_addr      = eth_validate_addr,
781         .ndo_set_rx_mode        = asix_set_multicast,
782         .ndo_do_ioctl           = asix_ioctl,
783         .ndo_change_mtu         = ax88178_change_mtu,
784 };
785 
786 static int ax88178_bind(struct usbnet *dev, struct usb_interface *intf)
787 {
788         int ret;
789         u8 buf[ETH_ALEN];
790 
791         usbnet_get_endpoints(dev,intf);
792 
793         /* Get the MAC address */
794         ret = asix_read_cmd(dev, AX_CMD_READ_NODE_ID, 0, 0, ETH_ALEN, buf);
795         if (ret < 0) {
796                 netdev_dbg(dev->net, "Failed to read MAC address: %d\n", ret);
797                 return ret;
798         }
799 
800         asix_set_netdev_dev_addr(dev, buf);
801 
802         /* Initialize MII structure */
803         dev->mii.dev = dev->net;
804         dev->mii.mdio_read = asix_mdio_read;
805         dev->mii.mdio_write = asix_mdio_write;
806         dev->mii.phy_id_mask = 0x1f;
807         dev->mii.reg_num_mask = 0xff;
808         dev->mii.supports_gmii = 1;
809         dev->mii.phy_id = asix_get_phy_addr(dev);
810 
811         dev->net->netdev_ops = &ax88178_netdev_ops;
812         dev->net->ethtool_ops = &ax88178_ethtool_ops;
813 
814         /* Blink LEDS so users know driver saw dongle */
815         asix_sw_reset(dev, 0);
816         msleep(150);
817 
818         asix_sw_reset(dev, AX_SWRESET_PRL | AX_SWRESET_IPPD);
819         msleep(150);
820 
821         /* Asix framing packs multiple eth frames into a 2K usb bulk transfer */
822         if (dev->driver_info->flags & FLAG_FRAMING_AX) {
823                 /* hard_mtu  is still the default - the device does not support
824                    jumbo eth frames */
825                 dev->rx_urb_size = 2048;
826         }
827 
828         dev->driver_priv = kzalloc(sizeof(struct asix_common_private), GFP_KERNEL);
829         if (!dev->driver_priv)
830                         return -ENOMEM;
831 
832         return 0;
833 }
834 
835 static const struct driver_info ax8817x_info = {
836         .description = "ASIX AX8817x USB 2.0 Ethernet",
837         .bind = ax88172_bind,
838         .status = asix_status,
839         .link_reset = ax88172_link_reset,
840         .reset = ax88172_link_reset,
841         .flags =  FLAG_ETHER | FLAG_LINK_INTR,
842         .data = 0x00130103,
843 };
844 
845 static const struct driver_info dlink_dub_e100_info = {
846         .description = "DLink DUB-E100 USB Ethernet",
847         .bind = ax88172_bind,
848         .status = asix_status,
849         .link_reset = ax88172_link_reset,
850         .reset = ax88172_link_reset,
851         .flags =  FLAG_ETHER | FLAG_LINK_INTR,
852         .data = 0x009f9d9f,
853 };
854 
855 static const struct driver_info netgear_fa120_info = {
856         .description = "Netgear FA-120 USB Ethernet",
857         .bind = ax88172_bind,
858         .status = asix_status,
859         .link_reset = ax88172_link_reset,
860         .reset = ax88172_link_reset,
861         .flags =  FLAG_ETHER | FLAG_LINK_INTR,
862         .data = 0x00130103,
863 };
864 
865 static const struct driver_info hawking_uf200_info = {
866         .description = "Hawking UF200 USB Ethernet",
867         .bind = ax88172_bind,
868         .status = asix_status,
869         .link_reset = ax88172_link_reset,
870         .reset = ax88172_link_reset,
871         .flags =  FLAG_ETHER | FLAG_LINK_INTR,
872         .data = 0x001f1d1f,
873 };
874 
875 static const struct driver_info ax88772_info = {
876         .description = "ASIX AX88772 USB 2.0 Ethernet",
877         .bind = ax88772_bind,
878         .unbind = ax88772_unbind,
879         .status = asix_status,
880         .link_reset = ax88772_link_reset,
881         .reset = ax88772_link_reset,
882         .flags = FLAG_ETHER | FLAG_FRAMING_AX | FLAG_LINK_INTR | FLAG_MULTI_PACKET,
883         .rx_fixup = asix_rx_fixup_common,
884         .tx_fixup = asix_tx_fixup,
885 };
886 
887 static const struct driver_info ax88772b_info = {
888         .description = "ASIX AX88772B USB 2.0 Ethernet",
889         .bind = ax88772_bind,
890         .unbind = ax88772_unbind,
891         .status = asix_status,
892         .link_reset = ax88772_link_reset,
893         .reset = ax88772_reset,
894         .flags = FLAG_ETHER | FLAG_FRAMING_AX | FLAG_LINK_INTR |
895                  FLAG_MULTI_PACKET,
896         .rx_fixup = asix_rx_fixup_common,
897         .tx_fixup = asix_tx_fixup,
898         .data = FLAG_EEPROM_MAC,
899 };
900 
901 static const struct driver_info ax88178_info = {
902         .description = "ASIX AX88178 USB 2.0 Ethernet",
903         .bind = ax88178_bind,
904         .unbind = ax88772_unbind,
905         .status = asix_status,
906         .link_reset = ax88178_link_reset,
907         .reset = ax88178_reset,
908         .flags = FLAG_ETHER | FLAG_FRAMING_AX | FLAG_LINK_INTR |
909                  FLAG_MULTI_PACKET,
910         .rx_fixup = asix_rx_fixup_common,
911         .tx_fixup = asix_tx_fixup,
912 };
913 
914 /*
915  * USBLINK 20F9 "USB 2.0 LAN" USB ethernet adapter, typically found in
916  * no-name packaging.
917  * USB device strings are:
918  *   1: Manufacturer: USBLINK
919  *   2: Product: HG20F9 USB2.0
920  *   3: Serial: 000003
921  * Appears to be compatible with Asix 88772B.
922  */
923 static const struct driver_info hg20f9_info = {
924         .description = "HG20F9 USB 2.0 Ethernet",
925         .bind = ax88772_bind,
926         .unbind = ax88772_unbind,
927         .status = asix_status,
928         .link_reset = ax88772_link_reset,
929         .reset = ax88772_reset,
930         .flags = FLAG_ETHER | FLAG_FRAMING_AX | FLAG_LINK_INTR |
931                  FLAG_MULTI_PACKET,
932         .rx_fixup = asix_rx_fixup_common,
933         .tx_fixup = asix_tx_fixup,
934         .data = FLAG_EEPROM_MAC,
935 };
936 
937 static const struct usb_device_id       products [] = {
938 {
939         // Linksys USB200M
940         USB_DEVICE (0x077b, 0x2226),
941         .driver_info =  (unsigned long) &ax8817x_info,
942 }, {
943         // Netgear FA120
944         USB_DEVICE (0x0846, 0x1040),
945         .driver_info =  (unsigned long) &netgear_fa120_info,
946 }, {
947         // DLink DUB-E100
948         USB_DEVICE (0x2001, 0x1a00),
949         .driver_info =  (unsigned long) &dlink_dub_e100_info,
950 }, {
951         // Intellinet, ST Lab USB Ethernet
952         USB_DEVICE (0x0b95, 0x1720),
953         .driver_info =  (unsigned long) &ax8817x_info,
954 }, {
955         // Hawking UF200, TrendNet TU2-ET100
956         USB_DEVICE (0x07b8, 0x420a),
957         .driver_info =  (unsigned long) &hawking_uf200_info,
958 }, {
959         // Billionton Systems, USB2AR
960         USB_DEVICE (0x08dd, 0x90ff),
961         .driver_info =  (unsigned long) &ax8817x_info,
962 }, {
963         // ATEN UC210T
964         USB_DEVICE (0x0557, 0x2009),
965         .driver_info =  (unsigned long) &ax8817x_info,
966 }, {
967         // Buffalo LUA-U2-KTX
968         USB_DEVICE (0x0411, 0x003d),
969         .driver_info =  (unsigned long) &ax8817x_info,
970 }, {
971         // Buffalo LUA-U2-GT 10/100/1000
972         USB_DEVICE (0x0411, 0x006e),
973         .driver_info =  (unsigned long) &ax88178_info,
974 }, {
975         // Sitecom LN-029 "USB 2.0 10/100 Ethernet adapter"
976         USB_DEVICE (0x6189, 0x182d),
977         .driver_info =  (unsigned long) &ax8817x_info,
978 }, {
979         // Sitecom LN-031 "USB 2.0 10/100/1000 Ethernet adapter"
980         USB_DEVICE (0x0df6, 0x0056),
981         .driver_info =  (unsigned long) &ax88178_info,
982 }, {
983         // corega FEther USB2-TX
984         USB_DEVICE (0x07aa, 0x0017),
985         .driver_info =  (unsigned long) &ax8817x_info,
986 }, {
987         // Surecom EP-1427X-2
988         USB_DEVICE (0x1189, 0x0893),
989         .driver_info = (unsigned long) &ax8817x_info,
990 }, {
991         // goodway corp usb gwusb2e
992         USB_DEVICE (0x1631, 0x6200),
993         .driver_info = (unsigned long) &ax8817x_info,
994 }, {
995         // JVC MP-PRX1 Port Replicator
996         USB_DEVICE (0x04f1, 0x3008),
997         .driver_info = (unsigned long) &ax8817x_info,
998 }, {
999         // Lenovo U2L100P 10/100
1000         USB_DEVICE (0x17ef, 0x7203),
1001         .driver_info = (unsigned long) &ax88772_info,
1002 }, {
1003         // ASIX AX88772B 10/100
1004         USB_DEVICE (0x0b95, 0x772b),
1005         .driver_info = (unsigned long) &ax88772b_info,
1006 }, {
1007         // ASIX AX88772 10/100
1008         USB_DEVICE (0x0b95, 0x7720),
1009         .driver_info = (unsigned long) &ax88772_info,
1010 }, {
1011         // ASIX AX88178 10/100/1000
1012         USB_DEVICE (0x0b95, 0x1780),
1013         .driver_info = (unsigned long) &ax88178_info,
1014 }, {
1015         // Logitec LAN-GTJ/U2A
1016         USB_DEVICE (0x0789, 0x0160),
1017         .driver_info = (unsigned long) &ax88178_info,
1018 }, {
1019         // Linksys USB200M Rev 2
1020         USB_DEVICE (0x13b1, 0x0018),
1021         .driver_info = (unsigned long) &ax88772_info,
1022 }, {
1023         // 0Q0 cable ethernet
1024         USB_DEVICE (0x1557, 0x7720),
1025         .driver_info = (unsigned long) &ax88772_info,
1026 }, {
1027         // DLink DUB-E100 H/W Ver B1
1028         USB_DEVICE (0x07d1, 0x3c05),
1029         .driver_info = (unsigned long) &ax88772_info,
1030 }, {
1031         // DLink DUB-E100 H/W Ver B1 Alternate
1032         USB_DEVICE (0x2001, 0x3c05),
1033         .driver_info = (unsigned long) &ax88772_info,
1034 }, {
1035        // DLink DUB-E100 H/W Ver C1
1036        USB_DEVICE (0x2001, 0x1a02),
1037        .driver_info = (unsigned long) &ax88772_info,
1038 }, {
1039         // Linksys USB1000
1040         USB_DEVICE (0x1737, 0x0039),
1041         .driver_info = (unsigned long) &ax88178_info,
1042 }, {
1043         // IO-DATA ETG-US2
1044         USB_DEVICE (0x04bb, 0x0930),
1045         .driver_info = (unsigned long) &ax88178_info,
1046 }, {
1047         // Belkin F5D5055
1048         USB_DEVICE(0x050d, 0x5055),
1049         .driver_info = (unsigned long) &ax88178_info,
1050 }, {
1051         // Apple USB Ethernet Adapter
1052         USB_DEVICE(0x05ac, 0x1402),
1053         .driver_info = (unsigned long) &ax88772_info,
1054 }, {
1055         // Cables-to-Go USB Ethernet Adapter
1056         USB_DEVICE(0x0b95, 0x772a),
1057         .driver_info = (unsigned long) &ax88772_info,
1058 }, {
1059         // ABOCOM for pci
1060         USB_DEVICE(0x14ea, 0xab11),
1061         .driver_info = (unsigned long) &ax88178_info,
1062 }, {
1063         // ASIX 88772a
1064         USB_DEVICE(0x0db0, 0xa877),
1065         .driver_info = (unsigned long) &ax88772_info,
1066 }, {
1067         // Asus USB Ethernet Adapter
1068         USB_DEVICE (0x0b95, 0x7e2b),
1069         .driver_info = (unsigned long) &ax88772_info,
1070 }, {
1071         /* ASIX 88172a demo board */
1072         USB_DEVICE(0x0b95, 0x172a),
1073         .driver_info = (unsigned long) &ax88172a_info,
1074 }, {
1075         /*
1076          * USBLINK HG20F9 "USB 2.0 LAN"
1077          * Appears to have gazumped Linksys's manufacturer ID but
1078          * doesn't (yet) conflict with any known Linksys product.
1079          */
1080         USB_DEVICE(0x066b, 0x20f9),
1081         .driver_info = (unsigned long) &hg20f9_info,
1082 },
1083         { },            // END
1084 };
1085 MODULE_DEVICE_TABLE(usb, products);
1086 
1087 static struct usb_driver asix_driver = {
1088         .name =         DRIVER_NAME,
1089         .id_table =     products,
1090         .probe =        usbnet_probe,
1091         .suspend =      usbnet_suspend,
1092         .resume =       usbnet_resume,
1093         .disconnect =   usbnet_disconnect,
1094         .supports_autosuspend = 1,
1095         .disable_hub_initiated_lpm = 1,
1096 };
1097 
1098 module_usb_driver(asix_driver);
1099 
1100 MODULE_AUTHOR("David Hollis");
1101 MODULE_VERSION(DRIVER_VERSION);
1102 MODULE_DESCRIPTION("ASIX AX8817X based USB 2.0 Ethernet Devices");
1103 MODULE_LICENSE("GPL");
1104 
1105 

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