drivers/net/usb/asix_devices.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * ASIX AX8817X based USB 2.0 Ethernet Devices
   4  * Copyright (C) 2003-2006 David Hollis <[email protected]>
   5  * Copyright (C) 2005 Phil Chang <[email protected]>
   6  * Copyright (C) 2006 James Painter <[email protected]>
   7  * Copyright (c) 2002-2003 TiVo Inc.
   8  */
   9
  10 #include "asix.h"
  11
  12 #define PHY_MODE_MARVELL        0x0000
  13 #define MII_MARVELL_LED_CTRL    0x0018
  14 #define MII_MARVELL_STATUS      0x001b
  15 #define MII_MARVELL_CTRL        0x0014
  16
  17 #define MARVELL_LED_MANUAL      0x0019
  18
  19 #define MARVELL_STATUS_HWCFG    0x0004
  20
  21 #define MARVELL_CTRL_TXDELAY    0x0002
  22 #define MARVELL_CTRL_RXDELAY    0x0080
  23
  24 #define PHY_MODE_RTL8211CL      0x000C
  25
  26 #define AX88772A_PHY14H         0x14
  27 #define AX88772A_PHY14H_DEFAULT 0x442C
  28
  29 #define AX88772A_PHY15H         0x15
  30 #define AX88772A_PHY15H_DEFAULT 0x03C8
  31
  32 #define AX88772A_PHY16H         0x16
  33 #define AX88772A_PHY16H_DEFAULT 0x4044
  34
  35 struct ax88172_int_data {
  36         __le16 res1;
  37         u8 link;
  38         __le16 res2;
  39         u8 status;
  40         __le16 res3;
  41 } __packed;
  42
  43 static void asix_status(struct usbnet *dev, struct urb *urb)
  44 {
  45         struct ax88172_int_data *event;
  46         int link;
  47
  48         if (urb->actual_length < 8)
  49                 return;
  50
  51         event = urb->transfer_buffer;
  52         link = event->link & 0x01;
  53         if (netif_carrier_ok(dev->net) != link) {
  54                 usbnet_link_change(dev, link, 1);
  55                 netdev_dbg(dev->net, "Link Status is: %d\n", link);
  56         }
  57 }
  58
  59 static void asix_set_netdev_dev_addr(struct usbnet *dev, u8 *addr)
  60 {
  61         if (is_valid_ether_addr(addr)) {
  62                 eth_hw_addr_set(dev->net, addr);
  63         } else {
  64                 netdev_info(dev->net, "invalid hw address, using random\n");
  65                 eth_hw_addr_random(dev->net);
  66         }
  67 }
  68
  69 /* Get the PHY Identifier from the PHYSID1 & PHYSID2 MII registers */
  70 static u32 asix_get_phyid(struct usbnet *dev)
  71 {
  72         int phy_reg;
  73         u32 phy_id;
  74         int i;
  75
  76         /* Poll for the rare case the FW or phy isn't ready yet.  */
  77         for (i = 0; i < 100; i++) {
  78                 phy_reg = asix_mdio_read(dev->net, dev->mii.phy_id, MII_PHYSID1);
  79                 if (phy_reg < 0)
  80                         return 0;
  81                 if (phy_reg != 0 && phy_reg != 0xFFFF)
  82                         break;
  83                 mdelay(1);
  84         }
  85
  86         if (phy_reg <= 0 || phy_reg == 0xFFFF)
  87                 return 0;
  88
  89         phy_id = (phy_reg & 0xffff) << 16;
  90
  91         phy_reg = asix_mdio_read(dev->net, dev->mii.phy_id, MII_PHYSID2);
  92         if (phy_reg < 0)
  93                 return 0;
  94
  95         phy_id |= (phy_reg & 0xffff);
  96
  97         return phy_id;
  98 }
  99
 100 static u32 asix_get_link(struct net_device *net)
 101 {
 102         struct usbnet *dev = netdev_priv(net);
 103
 104         return mii_link_ok(&dev->mii);
 105 }
 106
 107 static int asix_ioctl (struct net_device *net, struct ifreq *rq, int cmd)
 108 {
 109         struct usbnet *dev = netdev_priv(net);
 110
 111         return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
 112 }
 113
 114 /* We need to override some ethtool_ops so we require our
 115    own structure so we don't interfere with other usbnet
 116    devices that may be connected at the same time. */
 117 static const struct ethtool_ops ax88172_ethtool_ops = {
 118         .get_drvinfo            = asix_get_drvinfo,
 119         .get_link               = asix_get_link,
 120         .get_msglevel           = usbnet_get_msglevel,
 121         .set_msglevel           = usbnet_set_msglevel,
 122         .get_wol                = asix_get_wol,
 123         .set_wol                = asix_set_wol,
 124         .get_eeprom_len         = asix_get_eeprom_len,
 125         .get_eeprom             = asix_get_eeprom,
 126         .set_eeprom             = asix_set_eeprom,
 127         .nway_reset             = usbnet_nway_reset,
 128         .get_link_ksettings     = usbnet_get_link_ksettings_mii,
 129         .set_link_ksettings     = usbnet_set_link_ksettings_mii,
 130 };
 131
 132 static void ax88172_set_multicast(struct net_device *net)
 133 {
 134         struct usbnet *dev = netdev_priv(net);
 135         struct asix_data *data = (struct asix_data *)&dev->data;
 136         u8 rx_ctl = 0x8c;
 137
 138         if (net->flags & IFF_PROMISC) {
 139                 rx_ctl |= 0x01;
 140         } else if (net->flags & IFF_ALLMULTI ||
 141                    netdev_mc_count(net) > AX_MAX_MCAST) {
 142                 rx_ctl |= 0x02;
 143         } else if (netdev_mc_empty(net)) {
 144                 /* just broadcast and directed */
 145         } else {
 146                 /* We use the 20 byte dev->data
 147                  * for our 8 byte filter buffer
 148                  * to avoid allocating memory that
 149                  * is tricky to free later */
 150                 struct netdev_hw_addr *ha;
 151                 u32 crc_bits;
 152
 153                 memset(data->multi_filter, 0, AX_MCAST_FILTER_SIZE);
 154
 155                 /* Build the multicast hash filter. */
 156                 netdev_for_each_mc_addr(ha, net) {
 157                         crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26;
 158                         data->multi_filter[crc_bits >> 3] |=
 159                             1 << (crc_bits & 7);
 160                 }
 161
 162                 asix_write_cmd_async(dev, AX_CMD_WRITE_MULTI_FILTER, 0, 0,
 163                                    AX_MCAST_FILTER_SIZE, data->multi_filter);
 164
 165                 rx_ctl |= 0x10;
 166         }
 167
 168         asix_write_cmd_async(dev, AX_CMD_WRITE_RX_CTL, rx_ctl, 0, 0, NULL);
 169 }
 170
 171 static int ax88172_link_reset(struct usbnet *dev)
 172 {
 173         u8 mode;
 174         struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET };
 175
 176         mii_check_media(&dev->mii, 1, 1);
 177         mii_ethtool_gset(&dev->mii, &ecmd);
 178         mode = AX88172_MEDIUM_DEFAULT;
 179
 180         if (ecmd.duplex != DUPLEX_FULL)
 181                 mode |= ~AX88172_MEDIUM_FD;
 182
 183         netdev_dbg(dev->net, "ax88172_link_reset() speed: %u duplex: %d setting mode to 0x%04x\n",
 184                    ethtool_cmd_speed(&ecmd), ecmd.duplex, mode);
 185
 186         asix_write_medium_mode(dev, mode, 0);
 187
 188         return 0;
 189 }
 190
 191 static const struct net_device_ops ax88172_netdev_ops = {
 192         .ndo_open               = usbnet_open,
 193         .ndo_stop               = usbnet_stop,
 194         .ndo_start_xmit         = usbnet_start_xmit,
 195         .ndo_tx_timeout         = usbnet_tx_timeout,
 196         .ndo_change_mtu         = usbnet_change_mtu,
 197         .ndo_get_stats64        = dev_get_tstats64,
 198         .ndo_set_mac_address    = eth_mac_addr,
 199         .ndo_validate_addr      = eth_validate_addr,
 200         .ndo_eth_ioctl          = asix_ioctl,
 201         .ndo_set_rx_mode        = ax88172_set_multicast,
 202 };
 203
 204 static void asix_phy_reset(struct usbnet *dev, unsigned int reset_bits)
 205 {
 206         unsigned int timeout = 5000;
 207
 208         asix_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, reset_bits);
 209
 210         /* give phy_id a chance to process reset */
 211         udelay(500);
 212
 213         /* See IEEE 802.3 "22.2.4.1.1 Reset": 500ms max */
 214         while (timeout--) {
 215                 if (asix_mdio_read(dev->net, dev->mii.phy_id, MII_BMCR)
 216                                                         & BMCR_RESET)
 217                         udelay(100);
 218                 else
 219                         return;
 220         }
 221
 222         netdev_err(dev->net, "BMCR_RESET timeout on phy_id %d\n",
 223                    dev->mii.phy_id);
 224 }
 225
 226 static int ax88172_bind(struct usbnet *dev, struct usb_interface *intf)
 227 {
 228         int ret = 0;
 229         u8 buf[ETH_ALEN] = {0};
 230         int i;
 231         unsigned long gpio_bits = dev->driver_info->data;
 232
 233         usbnet_get_endpoints(dev,intf);
 234
 235         /* Toggle the GPIOs in a manufacturer/model specific way */
 236         for (i = 2; i >= 0; i--) {
 237                 ret = asix_write_cmd(dev, AX_CMD_WRITE_GPIOS,
 238                                 (gpio_bits >> (i * 8)) & 0xff, 0, 0, NULL, 0);
 239                 if (ret < 0)
 240                         goto out;
 241                 msleep(5);
 242         }
 243
 244         ret = asix_write_rx_ctl(dev, 0x80, 0);
 245         if (ret < 0)
 246                 goto out;
 247
 248         /* Get the MAC address */
 249         ret = asix_read_cmd(dev, AX88172_CMD_READ_NODE_ID,
 250                             0, 0, ETH_ALEN, buf, 0);
 251         if (ret < 0) {
 252                 netdev_dbg(dev->net, "read AX_CMD_READ_NODE_ID failed: %d\n",
 253                            ret);
 254                 goto out;
 255         }
 256
 257         asix_set_netdev_dev_addr(dev, buf);
 258
 259         /* Initialize MII structure */
 260         dev->mii.dev = dev->net;
 261         dev->mii.mdio_read = asix_mdio_read;
 262         dev->mii.mdio_write = asix_mdio_write;
 263         dev->mii.phy_id_mask = 0x3f;
 264         dev->mii.reg_num_mask = 0x1f;
 265
 266         dev->mii.phy_id = asix_read_phy_addr(dev, true);
 267         if (dev->mii.phy_id < 0)
 268                 return dev->mii.phy_id;
 269
 270         dev->net->netdev_ops = &ax88172_netdev_ops;
 271         dev->net->ethtool_ops = &ax88172_ethtool_ops;
 272         dev->net->needed_headroom = 4; /* cf asix_tx_fixup() */
 273         dev->net->needed_tailroom = 4; /* cf asix_tx_fixup() */
 274
 275         asix_phy_reset(dev, BMCR_RESET);
 276         asix_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
 277                 ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP);
 278         mii_nway_restart(&dev->mii);
 279
 280         return 0;
 281
 282 out:
 283         return ret;
 284 }
 285
 286 static void ax88772_ethtool_get_strings(struct net_device *netdev, u32 sset,
 287                                         u8 *data)
 288 {
 289         switch (sset) {
 290         case ETH_SS_TEST:
 291                 net_selftest_get_strings(data);
 292                 break;
 293         }
 294 }
 295
 296 static int ax88772_ethtool_get_sset_count(struct net_device *ndev, int sset)
 297 {
 298         switch (sset) {
 299         case ETH_SS_TEST:
 300                 return net_selftest_get_count();
 301         default:
 302                 return -EOPNOTSUPP;
 303         }
 304 }
 305
 306 static void ax88772_ethtool_get_pauseparam(struct net_device *ndev,
 307                                           struct ethtool_pauseparam *pause)
 308 {
 309         struct usbnet *dev = netdev_priv(ndev);
 310         struct asix_common_private *priv = dev->driver_priv;
 311
 312         phylink_ethtool_get_pauseparam(priv->phylink, pause);
 313 }
 314
 315 static int ax88772_ethtool_set_pauseparam(struct net_device *ndev,
 316                                          struct ethtool_pauseparam *pause)
 317 {
 318         struct usbnet *dev = netdev_priv(ndev);
 319         struct asix_common_private *priv = dev->driver_priv;
 320
 321         return phylink_ethtool_set_pauseparam(priv->phylink, pause);
 322 }
 323
 324 static const struct ethtool_ops ax88772_ethtool_ops = {
 325         .get_drvinfo            = asix_get_drvinfo,
 326         .get_link               = usbnet_get_link,
 327         .get_msglevel           = usbnet_get_msglevel,
 328         .set_msglevel           = usbnet_set_msglevel,
 329         .get_wol                = asix_get_wol,
 330         .set_wol                = asix_set_wol,
 331         .get_eeprom_len         = asix_get_eeprom_len,
 332         .get_eeprom             = asix_get_eeprom,
 333         .set_eeprom             = asix_set_eeprom,
 334         .nway_reset             = phy_ethtool_nway_reset,
 335         .get_link_ksettings     = phy_ethtool_get_link_ksettings,
 336         .set_link_ksettings     = phy_ethtool_set_link_ksettings,
 337         .self_test              = net_selftest,
 338         .get_strings            = ax88772_ethtool_get_strings,
 339         .get_sset_count         = ax88772_ethtool_get_sset_count,
 340         .get_pauseparam         = ax88772_ethtool_get_pauseparam,
 341         .set_pauseparam         = ax88772_ethtool_set_pauseparam,
 342 };
 343
 344 static int ax88772_reset(struct usbnet *dev)
 345 {
 346         struct asix_data *data = (struct asix_data *)&dev->data;
 347         struct asix_common_private *priv = dev->driver_priv;
 348         int ret;
 349
 350         /* Rewrite MAC address */
 351         ether_addr_copy(data->mac_addr, dev->net->dev_addr);
 352         ret = asix_write_cmd(dev, AX_CMD_WRITE_NODE_ID, 0, 0,
 353                              ETH_ALEN, data->mac_addr, 0);
 354         if (ret < 0)
 355                 goto out;
 356
 357         /* Set RX_CTL to default values with 2k buffer, and enable cactus */
 358         ret = asix_write_rx_ctl(dev, AX_DEFAULT_RX_CTL, 0);
 359         if (ret < 0)
 360                 goto out;
 361
 362         ret = asix_write_medium_mode(dev, AX88772_MEDIUM_DEFAULT, 0);
 363         if (ret < 0)
 364                 goto out;
 365
 366         phylink_start(priv->phylink);
 367
 368         return 0;
 369
 370 out:
 371         return ret;
 372 }
 373
 374 static int ax88772_hw_reset(struct usbnet *dev, int in_pm)
 375 {
 376         struct asix_data *data = (struct asix_data *)&dev->data;
 377         struct asix_common_private *priv = dev->driver_priv;
 378         u16 rx_ctl;
 379         int ret;
 380
 381         ret = asix_write_gpio(dev, AX_GPIO_RSE | AX_GPIO_GPO_2 |
 382                               AX_GPIO_GPO2EN, 5, in_pm);
 383         if (ret < 0)
 384                 goto out;
 385
 386         ret = asix_write_cmd(dev, AX_CMD_SW_PHY_SELECT, priv->embd_phy,
 387                              0, 0, NULL, in_pm);
 388         if (ret < 0) {
 389                 netdev_dbg(dev->net, "Select PHY #1 failed: %d\n", ret);
 390                 goto out;
 391         }
 392
 393         if (priv->embd_phy) {
 394                 ret = asix_sw_reset(dev, AX_SWRESET_IPPD, in_pm);
 395                 if (ret < 0)
 396                         goto out;
 397
 398                 usleep_range(10000, 11000);
 399
 400                 ret = asix_sw_reset(dev, AX_SWRESET_CLEAR, in_pm);
 401                 if (ret < 0)
 402                         goto out;
 403
 404                 msleep(60);
 405
 406                 ret = asix_sw_reset(dev, AX_SWRESET_IPRL | AX_SWRESET_PRL,
 407                                     in_pm);
 408                 if (ret < 0)
 409                         goto out;
 410         } else {
 411                 ret = asix_sw_reset(dev, AX_SWRESET_IPPD | AX_SWRESET_PRL,
 412                                     in_pm);
 413                 if (ret < 0)
 414                         goto out;
 415         }
 416
 417         msleep(150);
 418
 419         if (in_pm && (!asix_mdio_read_nopm(dev->net, dev->mii.phy_id,
 420                                            MII_PHYSID1))){
 421                 ret = -EIO;
 422                 goto out;
 423         }
 424
 425         ret = asix_write_rx_ctl(dev, AX_DEFAULT_RX_CTL, in_pm);
 426         if (ret < 0)
 427                 goto out;
 428
 429         ret = asix_write_medium_mode(dev, AX88772_MEDIUM_DEFAULT, in_pm);
 430         if (ret < 0)
 431                 goto out;
 432
 433         ret = asix_write_cmd(dev, AX_CMD_WRITE_IPG0,
 434                              AX88772_IPG0_DEFAULT | AX88772_IPG1_DEFAULT,
 435                              AX88772_IPG2_DEFAULT, 0, NULL, in_pm);
 436         if (ret < 0) {
 437                 netdev_dbg(dev->net, "Write IPG,IPG1,IPG2 failed: %d\n", ret);
 438                 goto out;
 439         }
 440
 441         /* Rewrite MAC address */
 442         ether_addr_copy(data->mac_addr, dev->net->dev_addr);
 443         ret = asix_write_cmd(dev, AX_CMD_WRITE_NODE_ID, 0, 0,
 444                              ETH_ALEN, data->mac_addr, in_pm);
 445         if (ret < 0)
 446                 goto out;
 447
 448         /* Set RX_CTL to default values with 2k buffer, and enable cactus */
 449         ret = asix_write_rx_ctl(dev, AX_DEFAULT_RX_CTL, in_pm);
 450         if (ret < 0)
 451                 goto out;
 452
 453         rx_ctl = asix_read_rx_ctl(dev, in_pm);
 454         netdev_dbg(dev->net, "RX_CTL is 0x%04x after all initializations\n",
 455                    rx_ctl);
 456
 457         rx_ctl = asix_read_medium_status(dev, in_pm);
 458         netdev_dbg(dev->net,
 459                    "Medium Status is 0x%04x after all initializations\n",
 460                    rx_ctl);
 461
 462         return 0;
 463
 464 out:
 465         return ret;
 466 }
 467
 468 static int ax88772a_hw_reset(struct usbnet *dev, int in_pm)
 469 {
 470         struct asix_data *data = (struct asix_data *)&dev->data;
 471         struct asix_common_private *priv = dev->driver_priv;
 472         u16 rx_ctl, phy14h, phy15h, phy16h;
 473         int ret;
 474
 475         ret = asix_write_gpio(dev, AX_GPIO_RSE, 5, in_pm);
 476         if (ret < 0)
 477                 goto out;
 478
 479         ret = asix_write_cmd(dev, AX_CMD_SW_PHY_SELECT, priv->embd_phy |
 480                              AX_PHYSEL_SSEN, 0, 0, NULL, in_pm);
 481         if (ret < 0) {
 482                 netdev_dbg(dev->net, "Select PHY #1 failed: %d\n", ret);
 483                 goto out;
 484         }
 485         usleep_range(10000, 11000);
 486
 487         ret = asix_sw_reset(dev, AX_SWRESET_IPPD | AX_SWRESET_IPRL, in_pm);
 488         if (ret < 0)
 489                 goto out;
 490
 491         usleep_range(10000, 11000);
 492
 493         ret = asix_sw_reset(dev, AX_SWRESET_IPRL, in_pm);
 494         if (ret < 0)
 495                 goto out;
 496
 497         msleep(160);
 498
 499         ret = asix_sw_reset(dev, AX_SWRESET_CLEAR, in_pm);
 500         if (ret < 0)
 501                 goto out;
 502
 503         ret = asix_sw_reset(dev, AX_SWRESET_IPRL, in_pm);
 504         if (ret < 0)
 505                 goto out;
 506
 507         msleep(200);
 508
 509         if (in_pm && (!asix_mdio_read_nopm(dev->net, dev->mii.phy_id,
 510                                            MII_PHYSID1))) {
 511                 ret = -1;
 512                 goto out;
 513         }
 514
 515         if (priv->chipcode == AX_AX88772B_CHIPCODE) {
 516                 ret = asix_write_cmd(dev, AX_QCTCTRL, 0x8000, 0x8001,
 517                                      0, NULL, in_pm);
 518                 if (ret < 0) {
 519                         netdev_dbg(dev->net, "Write BQ setting failed: %d\n",
 520                                    ret);
 521                         goto out;
 522                 }
 523         } else if (priv->chipcode == AX_AX88772A_CHIPCODE) {
 524                 /* Check if the PHY registers have default settings */
 525                 phy14h = asix_mdio_read_nopm(dev->net, dev->mii.phy_id,
 526                                              AX88772A_PHY14H);
 527                 phy15h = asix_mdio_read_nopm(dev->net, dev->mii.phy_id,
 528                                              AX88772A_PHY15H);
 529                 phy16h = asix_mdio_read_nopm(dev->net, dev->mii.phy_id,
 530                                              AX88772A_PHY16H);
 531
 532                 netdev_dbg(dev->net,
 533                            "772a_hw_reset: MR20=0x%x MR21=0x%x MR22=0x%x\n",
 534                            phy14h, phy15h, phy16h);
 535
 536                 /* Restore PHY registers default setting if not */
 537                 if (phy14h != AX88772A_PHY14H_DEFAULT)
 538                         asix_mdio_write_nopm(dev->net, dev->mii.phy_id,
 539                                              AX88772A_PHY14H,
 540                                              AX88772A_PHY14H_DEFAULT);
 541                 if (phy15h != AX88772A_PHY15H_DEFAULT)
 542                         asix_mdio_write_nopm(dev->net, dev->mii.phy_id,
 543                                              AX88772A_PHY15H,
 544                                              AX88772A_PHY15H_DEFAULT);
 545                 if (phy16h != AX88772A_PHY16H_DEFAULT)
 546                         asix_mdio_write_nopm(dev->net, dev->mii.phy_id,
 547                                              AX88772A_PHY16H,
 548                                              AX88772A_PHY16H_DEFAULT);
 549         }
 550
 551         ret = asix_write_cmd(dev, AX_CMD_WRITE_IPG0,
 552                                 AX88772_IPG0_DEFAULT | AX88772_IPG1_DEFAULT,
 553                                 AX88772_IPG2_DEFAULT, 0, NULL, in_pm);
 554         if (ret < 0) {
 555                 netdev_dbg(dev->net, "Write IPG,IPG1,IPG2 failed: %d\n", ret);
 556                 goto out;
 557         }
 558
 559         /* Rewrite MAC address */
 560         memcpy(data->mac_addr, dev->net->dev_addr, ETH_ALEN);
 561         ret = asix_write_cmd(dev, AX_CMD_WRITE_NODE_ID, 0, 0, ETH_ALEN,
 562                                                         data->mac_addr, in_pm);
 563         if (ret < 0)
 564                 goto out;
 565
 566         /* Set RX_CTL to default values with 2k buffer, and enable cactus */
 567         ret = asix_write_rx_ctl(dev, AX_DEFAULT_RX_CTL, in_pm);
 568         if (ret < 0)
 569                 goto out;
 570
 571         ret = asix_write_medium_mode(dev, AX88772_MEDIUM_DEFAULT, in_pm);
 572         if (ret < 0)
 573                 return ret;
 574
 575         /* Set RX_CTL to default values with 2k buffer, and enable cactus */
 576         ret = asix_write_rx_ctl(dev, AX_DEFAULT_RX_CTL, in_pm);
 577         if (ret < 0)
 578                 goto out;
 579
 580         rx_ctl = asix_read_rx_ctl(dev, in_pm);
 581         netdev_dbg(dev->net, "RX_CTL is 0x%04x after all initializations\n",
 582                    rx_ctl);
 583
 584         rx_ctl = asix_read_medium_status(dev, in_pm);
 585         netdev_dbg(dev->net,
 586                    "Medium Status is 0x%04x after all initializations\n",
 587                    rx_ctl);
 588
 589         return 0;
 590
 591 out:
 592         return ret;
 593 }
 594
 595 static const struct net_device_ops ax88772_netdev_ops = {
 596         .ndo_open               = usbnet_open,
 597         .ndo_stop               = usbnet_stop,
 598         .ndo_start_xmit         = usbnet_start_xmit,
 599         .ndo_tx_timeout         = usbnet_tx_timeout,
 600         .ndo_change_mtu         = usbnet_change_mtu,
 601         .ndo_get_stats64        = dev_get_tstats64,
 602         .ndo_set_mac_address    = asix_set_mac_address,
 603         .ndo_validate_addr      = eth_validate_addr,
 604         .ndo_eth_ioctl          = phy_do_ioctl_running,
 605         .ndo_set_rx_mode        = asix_set_multicast,
 606 };
 607
 608 static void ax88772_suspend(struct usbnet *dev)
 609 {
 610         struct asix_common_private *priv = dev->driver_priv;
 611         u16 medium;
 612
 613         if (netif_running(dev->net)) {
 614                 rtnl_lock();
 615                 phylink_suspend(priv->phylink, false);
 616                 rtnl_unlock();
 617         }
 618
 619         /* Stop MAC operation */
 620         medium = asix_read_medium_status(dev, 1);
 621         medium &= ~AX_MEDIUM_RE;
 622         asix_write_medium_mode(dev, medium, 1);
 623
 624         netdev_dbg(dev->net, "ax88772_suspend: medium=0x%04x\n",
 625                    asix_read_medium_status(dev, 1));
 626 }
 627
 628 static int asix_suspend(struct usb_interface *intf, pm_message_t message)
 629 {
 630         struct usbnet *dev = usb_get_intfdata(intf);
 631         struct asix_common_private *priv = dev->driver_priv;
 632
 633         if (priv && priv->suspend)
 634                 priv->suspend(dev);
 635
 636         return usbnet_suspend(intf, message);
 637 }
 638
 639 static void ax88772_resume(struct usbnet *dev)
 640 {
 641         struct asix_common_private *priv = dev->driver_priv;
 642         int i;
 643
 644         for (i = 0; i < 3; i++)
 645                 if (!priv->reset(dev, 1))
 646                         break;
 647
 648         if (netif_running(dev->net)) {
 649                 rtnl_lock();
 650                 phylink_resume(priv->phylink);
 651                 rtnl_unlock();
 652         }
 653 }
 654
 655 static int asix_resume(struct usb_interface *intf)
 656 {
 657         struct usbnet *dev = usb_get_intfdata(intf);
 658         struct asix_common_private *priv = dev->driver_priv;
 659
 660         if (priv && priv->resume)
 661                 priv->resume(dev);
 662
 663         return usbnet_resume(intf);
 664 }
 665
 666 static int ax88772_init_mdio(struct usbnet *dev)
 667 {
 668         struct asix_common_private *priv = dev->driver_priv;
 669         int ret;
 670
 671         priv->mdio = mdiobus_alloc();
 672         if (!priv->mdio)
 673                 return -ENOMEM;
 674
 675         priv->mdio->priv = dev;
 676         priv->mdio->read = &asix_mdio_bus_read;
 677         priv->mdio->write = &asix_mdio_bus_write;
 678         priv->mdio->name = "Asix MDIO Bus";
 679         /* mii bus name is usb-<usb bus number>-<usb device number> */
 680         snprintf(priv->mdio->id, MII_BUS_ID_SIZE, "usb-%03d:%03d",
 681                  dev->udev->bus->busnum, dev->udev->devnum);
 682
 683         ret = mdiobus_register(priv->mdio);
 684         if (ret) {
 685                 netdev_err(dev->net, "Could not register MDIO bus (err %d)\n", ret);
 686                 mdiobus_free(priv->mdio);
 687                 priv->mdio = NULL;
 688         }
 689
 690         return ret;
 691 }
 692
 693 static void ax88772_mdio_unregister(struct asix_common_private *priv)
 694 {
 695         mdiobus_unregister(priv->mdio);
 696         mdiobus_free(priv->mdio);
 697 }
 698
 699 static int ax88772_init_phy(struct usbnet *dev)
 700 {
 701         struct asix_common_private *priv = dev->driver_priv;
 702         int ret;
 703
 704         priv->phydev = mdiobus_get_phy(priv->mdio, priv->phy_addr);
 705         if (!priv->phydev) {
 706                 netdev_err(dev->net, "Could not find PHY\n");
 707                 return -ENODEV;
 708         }
 709
 710         ret = phylink_connect_phy(priv->phylink, priv->phydev);
 711         if (ret) {
 712                 netdev_err(dev->net, "Could not connect PHY\n");
 713                 return ret;
 714         }
 715
 716         phy_suspend(priv->phydev);
 717         priv->phydev->mac_managed_pm = true;
 718
 719         phy_attached_info(priv->phydev);
 720
 721         if (priv->embd_phy)
 722                 return 0;
 723
 724         /* In case main PHY is not the embedded PHY and MAC is RMII clock
 725          * provider, we need to suspend embedded PHY by keeping PLL enabled
 726          * (AX_SWRESET_IPPD == 0).
 727          */
 728         priv->phydev_int = mdiobus_get_phy(priv->mdio, AX_EMBD_PHY_ADDR);
 729         if (!priv->phydev_int) {
 730                 rtnl_lock();
 731                 phylink_disconnect_phy(priv->phylink);
 732                 rtnl_unlock();
 733                 netdev_err(dev->net, "Could not find internal PHY\n");
 734                 return -ENODEV;
 735         }
 736
 737         priv->phydev_int->mac_managed_pm = true;
 738         phy_suspend(priv->phydev_int);
 739
 740         return 0;
 741 }
 742
 743 static void ax88772_mac_config(struct phylink_config *config, unsigned int mode,
 744                               const struct phylink_link_state *state)
 745 {
 746         /* Nothing to do */
 747 }
 748
 749 static void ax88772_mac_link_down(struct phylink_config *config,
 750                                  unsigned int mode, phy_interface_t interface)
 751 {
 752         struct usbnet *dev = netdev_priv(to_net_dev(config->dev));
 753
 754         asix_write_medium_mode(dev, 0, 0);
 755         usbnet_link_change(dev, false, false);
 756 }
 757
 758 static void ax88772_mac_link_up(struct phylink_config *config,
 759                                struct phy_device *phy,
 760                                unsigned int mode, phy_interface_t interface,
 761                                int speed, int duplex,
 762                                bool tx_pause, bool rx_pause)
 763 {
 764         struct usbnet *dev = netdev_priv(to_net_dev(config->dev));
 765         u16 m = AX_MEDIUM_AC | AX_MEDIUM_RE;
 766
 767         m |= duplex ? AX_MEDIUM_FD : 0;
 768
 769         switch (speed) {
 770         case SPEED_100:
 771                 m |= AX_MEDIUM_PS;
 772                 break;
 773         case SPEED_10:
 774                 break;
 775         default:
 776                 return;
 777         }
 778
 779         if (tx_pause)
 780                 m |= AX_MEDIUM_TFC;
 781
 782         if (rx_pause)
 783                 m |= AX_MEDIUM_RFC;
 784
 785         asix_write_medium_mode(dev, m, 0);
 786         usbnet_link_change(dev, true, false);
 787 }
 788
 789 static const struct phylink_mac_ops ax88772_phylink_mac_ops = {
 790         .mac_config = ax88772_mac_config,
 791         .mac_link_down = ax88772_mac_link_down,
 792         .mac_link_up = ax88772_mac_link_up,
 793 };
 794
 795 static int ax88772_phylink_setup(struct usbnet *dev)
 796 {
 797         struct asix_common_private *priv = dev->driver_priv;
 798         phy_interface_t phy_if_mode;
 799         struct phylink *phylink;
 800
 801         priv->phylink_config.dev = &dev->net->dev;
 802         priv->phylink_config.type = PHYLINK_NETDEV;
 803         priv->phylink_config.mac_capabilities = MAC_SYM_PAUSE | MAC_ASYM_PAUSE |
 804                 MAC_10 | MAC_100;
 805
 806         __set_bit(PHY_INTERFACE_MODE_INTERNAL,
 807                   priv->phylink_config.supported_interfaces);
 808         __set_bit(PHY_INTERFACE_MODE_RMII,
 809                   priv->phylink_config.supported_interfaces);
 810
 811         if (priv->embd_phy)
 812                 phy_if_mode = PHY_INTERFACE_MODE_INTERNAL;
 813         else
 814                 phy_if_mode = PHY_INTERFACE_MODE_RMII;
 815
 816         phylink = phylink_create(&priv->phylink_config, dev->net->dev.fwnode,
 817                                  phy_if_mode, &ax88772_phylink_mac_ops);
 818         if (IS_ERR(phylink))
 819                 return PTR_ERR(phylink);
 820
 821         priv->phylink = phylink;
 822         return 0;
 823 }
 824
 825 static int ax88772_bind(struct usbnet *dev, struct usb_interface *intf)
 826 {
 827         struct asix_common_private *priv;
 828         u8 buf[ETH_ALEN] = {0};
 829         int ret, i;
 830
 831         priv = devm_kzalloc(&dev->udev->dev, sizeof(*priv), GFP_KERNEL);
 832         if (!priv)
 833                 return -ENOMEM;
 834
 835         dev->driver_priv = priv;
 836
 837         usbnet_get_endpoints(dev, intf);
 838
 839         /* Maybe the boot loader passed the MAC address via device tree */
 840         if (!eth_platform_get_mac_address(&dev->udev->dev, buf)) {
 841                 netif_dbg(dev, ifup, dev->net,
 842                           "MAC address read from device tree");
 843         } else {
 844                 /* Try getting the MAC address from EEPROM */
 845                 if (dev->driver_info->data & FLAG_EEPROM_MAC) {
 846                         for (i = 0; i < (ETH_ALEN >> 1); i++) {
 847                                 ret = asix_read_cmd(dev, AX_CMD_READ_EEPROM,
 848                                                     0x04 + i, 0, 2, buf + i * 2,
 849                                                     0);
 850                                 if (ret < 0)
 851                                         break;
 852                         }
 853                 } else {
 854                         ret = asix_read_cmd(dev, AX_CMD_READ_NODE_ID,
 855                                             0, 0, ETH_ALEN, buf, 0);
 856                 }
 857
 858                 if (ret < 0) {
 859                         netdev_dbg(dev->net, "Failed to read MAC address: %d\n",
 860                                    ret);
 861                         return ret;
 862                 }
 863         }
 864
 865         asix_set_netdev_dev_addr(dev, buf);
 866
 867         dev->net->netdev_ops = &ax88772_netdev_ops;
 868         dev->net->ethtool_ops = &ax88772_ethtool_ops;
 869         dev->net->needed_headroom = 4; /* cf asix_tx_fixup() */
 870         dev->net->needed_tailroom = 4; /* cf asix_tx_fixup() */
 871
 872         ret = asix_read_phy_addr(dev, true);
 873         if (ret < 0)
 874                 return ret;
 875
 876         priv->phy_addr = ret;
 877         priv->embd_phy = ((priv->phy_addr & 0x1f) == AX_EMBD_PHY_ADDR);
 878
 879         ret = asix_read_cmd(dev, AX_CMD_STATMNGSTS_REG, 0, 0, 1,
 880                             &priv->chipcode, 0);
 881         if (ret < 0) {
 882                 netdev_dbg(dev->net, "Failed to read STATMNGSTS_REG: %d\n", ret);
 883                 return ret;
 884         }
 885
 886         priv->chipcode &= AX_CHIPCODE_MASK;
 887
 888         priv->resume = ax88772_resume;
 889         priv->suspend = ax88772_suspend;
 890         if (priv->chipcode == AX_AX88772_CHIPCODE)
 891                 priv->reset = ax88772_hw_reset;
 892         else
 893                 priv->reset = ax88772a_hw_reset;
 894
 895         ret = priv->reset(dev, 0);
 896         if (ret < 0) {
 897                 netdev_dbg(dev->net, "Failed to reset AX88772: %d\n", ret);
 898                 return ret;
 899         }
 900
 901         /* Asix framing packs multiple eth frames into a 2K usb bulk transfer */
 902         if (dev->driver_info->flags & FLAG_FRAMING_AX) {
 903                 /* hard_mtu  is still the default - the device does not support
 904                    jumbo eth frames */
 905                 dev->rx_urb_size = 2048;
 906         }
 907
 908         priv->presvd_phy_bmcr = 0;
 909         priv->presvd_phy_advertise = 0;
 910
 911         ret = ax88772_init_mdio(dev);
 912         if (ret)
 913                 goto mdio_err;
 914
 915         ret = ax88772_phylink_setup(dev);
 916         if (ret)
 917                 goto phylink_err;
 918
 919         ret = ax88772_init_phy(dev);
 920         if (ret)
 921                 goto initphy_err;
 922
 923         return 0;
 924
 925 initphy_err:
 926         phylink_destroy(priv->phylink);
 927 phylink_err:
 928         ax88772_mdio_unregister(priv);
 929 mdio_err:
 930         return ret;
 931 }
 932
 933 static int ax88772_stop(struct usbnet *dev)
 934 {
 935         struct asix_common_private *priv = dev->driver_priv;
 936
 937         phylink_stop(priv->phylink);
 938
 939         return 0;
 940 }
 941
 942 static void ax88772_unbind(struct usbnet *dev, struct usb_interface *intf)
 943 {
 944         struct asix_common_private *priv = dev->driver_priv;
 945
 946         rtnl_lock();
 947         phylink_disconnect_phy(priv->phylink);
 948         rtnl_unlock();
 949         phylink_destroy(priv->phylink);
 950         ax88772_mdio_unregister(priv);
 951         asix_rx_fixup_common_free(dev->driver_priv);
 952 }
 953
 954 static void ax88178_unbind(struct usbnet *dev, struct usb_interface *intf)
 955 {
 956         asix_rx_fixup_common_free(dev->driver_priv);
 957         kfree(dev->driver_priv);
 958 }
 959
 960 static const struct ethtool_ops ax88178_ethtool_ops = {
 961         .get_drvinfo            = asix_get_drvinfo,
 962         .get_link               = asix_get_link,
 963         .get_msglevel           = usbnet_get_msglevel,
 964         .set_msglevel           = usbnet_set_msglevel,
 965         .get_wol                = asix_get_wol,
 966         .set_wol                = asix_set_wol,
 967         .get_eeprom_len         = asix_get_eeprom_len,
 968         .get_eeprom             = asix_get_eeprom,
 969         .set_eeprom             = asix_set_eeprom,
 970         .nway_reset             = usbnet_nway_reset,
 971         .get_link_ksettings     = usbnet_get_link_ksettings_mii,
 972         .set_link_ksettings     = usbnet_set_link_ksettings_mii,
 973 };
 974
 975 static int marvell_phy_init(struct usbnet *dev)
 976 {
 977         struct asix_data *data = (struct asix_data *)&dev->data;
 978         u16 reg;
 979
 980         netdev_dbg(dev->net, "marvell_phy_init()\n");
 981
 982         reg = asix_mdio_read(dev->net, dev->mii.phy_id, MII_MARVELL_STATUS);
 983         netdev_dbg(dev->net, "MII_MARVELL_STATUS = 0x%04x\n", reg);
 984
 985         asix_mdio_write(dev->net, dev->mii.phy_id, MII_MARVELL_CTRL,
 986                         MARVELL_CTRL_RXDELAY | MARVELL_CTRL_TXDELAY);
 987
 988         if (data->ledmode) {
 989                 reg = asix_mdio_read(dev->net, dev->mii.phy_id,
 990                         MII_MARVELL_LED_CTRL);
 991                 netdev_dbg(dev->net, "MII_MARVELL_LED_CTRL (1) = 0x%04x\n", reg);
 992
 993                 reg &= 0xf8ff;
 994                 reg |= (1 + 0x0100);
 995                 asix_mdio_write(dev->net, dev->mii.phy_id,
 996                         MII_MARVELL_LED_CTRL, reg);
 997
 998                 reg = asix_mdio_read(dev->net, dev->mii.phy_id,
 999                         MII_MARVELL_LED_CTRL);
1000                 netdev_dbg(dev->net, "MII_MARVELL_LED_CTRL (2) = 0x%04x\n", reg);
1001         }
1002
1003         return 0;
1004 }
1005
1006 static int rtl8211cl_phy_init(struct usbnet *dev)
1007 {
1008         struct asix_data *data = (struct asix_data *)&dev->data;
1009
1010         netdev_dbg(dev->net, "rtl8211cl_phy_init()\n");
1011
1012         asix_mdio_write (dev->net, dev->mii.phy_id, 0x1f, 0x0005);
1013         asix_mdio_write (dev->net, dev->mii.phy_id, 0x0c, 0);
1014         asix_mdio_write (dev->net, dev->mii.phy_id, 0x01,
1015                 asix_mdio_read (dev->net, dev->mii.phy_id, 0x01) | 0x0080);
1016         asix_mdio_write (dev->net, dev->mii.phy_id, 0x1f, 0);
1017
1018         if (data->ledmode == 12) {
1019                 asix_mdio_write (dev->net, dev->mii.phy_id, 0x1f, 0x0002);
1020                 asix_mdio_write (dev->net, dev->mii.phy_id, 0x1a, 0x00cb);
1021                 asix_mdio_write (dev->net, dev->mii.phy_id, 0x1f, 0);
1022         }
1023
1024         return 0;
1025 }
1026
1027 static int marvell_led_status(struct usbnet *dev, u16 speed)
1028 {
1029         u16 reg = asix_mdio_read(dev->net, dev->mii.phy_id, MARVELL_LED_MANUAL);
1030
1031         netdev_dbg(dev->net, "marvell_led_status() read 0x%04x\n", reg);
1032
1033         /* Clear out the center LED bits - 0x03F0 */
1034         reg &= 0xfc0f;
1035
1036         switch (speed) {
1037                 case SPEED_1000:
1038                         reg |= 0x03e0;
1039                         break;
1040                 case SPEED_100:
1041                         reg |= 0x03b0;
1042                         break;
1043                 default:
1044                         reg |= 0x02f0;
1045         }
1046
1047         netdev_dbg(dev->net, "marvell_led_status() writing 0x%04x\n", reg);
1048         asix_mdio_write(dev->net, dev->mii.phy_id, MARVELL_LED_MANUAL, reg);
1049
1050         return 0;
1051 }
1052
1053 static int ax88178_reset(struct usbnet *dev)
1054 {
1055         struct asix_data *data = (struct asix_data *)&dev->data;
1056         int ret;
1057         __le16 eeprom;
1058         u8 status;
1059         int gpio0 = 0;
1060         u32 phyid;
1061
1062         ret = asix_read_cmd(dev, AX_CMD_READ_GPIOS, 0, 0, 1, &status, 0);
1063         if (ret < 0) {
1064                 netdev_dbg(dev->net, "Failed to read GPIOS: %d\n", ret);
1065                 return ret;
1066         }
1067
1068         netdev_dbg(dev->net, "GPIO Status: 0x%04x\n", status);
1069
1070         asix_write_cmd(dev, AX_CMD_WRITE_ENABLE, 0, 0, 0, NULL, 0);
1071         ret = asix_read_cmd(dev, AX_CMD_READ_EEPROM, 0x0017, 0, 2, &eeprom, 0);
1072         if (ret < 0) {
1073                 netdev_dbg(dev->net, "Failed to read EEPROM: %d\n", ret);
1074                 return ret;
1075         }
1076
1077         asix_write_cmd(dev, AX_CMD_WRITE_DISABLE, 0, 0, 0, NULL, 0);
1078
1079         netdev_dbg(dev->net, "EEPROM index 0x17 is 0x%04x\n", eeprom);
1080
1081         if (eeprom == cpu_to_le16(0xffff)) {
1082                 data->phymode = PHY_MODE_MARVELL;
1083                 data->ledmode = 0;
1084                 gpio0 = 1;
1085         } else {
1086                 data->phymode = le16_to_cpu(eeprom) & 0x7F;
1087                 data->ledmode = le16_to_cpu(eeprom) >> 8;
1088                 gpio0 = (le16_to_cpu(eeprom) & 0x80) ? 0 : 1;
1089         }
1090         netdev_dbg(dev->net, "GPIO0: %d, PhyMode: %d\n", gpio0, data->phymode);
1091
1092         /* Power up external GigaPHY through AX88178 GPIO pin */
1093         asix_write_gpio(dev, AX_GPIO_RSE | AX_GPIO_GPO_1 |
1094                         AX_GPIO_GPO1EN, 40, 0);
1095         if ((le16_to_cpu(eeprom) >> 8) != 1) {
1096                 asix_write_gpio(dev, 0x003c, 30, 0);
1097                 asix_write_gpio(dev, 0x001c, 300, 0);
1098                 asix_write_gpio(dev, 0x003c, 30, 0);
1099         } else {
1100                 netdev_dbg(dev->net, "gpio phymode == 1 path\n");
1101                 asix_write_gpio(dev, AX_GPIO_GPO1EN, 30, 0);
1102                 asix_write_gpio(dev, AX_GPIO_GPO1EN | AX_GPIO_GPO_1, 30, 0);
1103         }
1104
1105         /* Read PHYID register *AFTER* powering up PHY */
1106         phyid = asix_get_phyid(dev);
1107         netdev_dbg(dev->net, "PHYID=0x%08x\n", phyid);
1108
1109         /* Set AX88178 to enable MII/GMII/RGMII interface for external PHY */
1110         asix_write_cmd(dev, AX_CMD_SW_PHY_SELECT, 0, 0, 0, NULL, 0);
1111
1112         asix_sw_reset(dev, 0, 0);
1113         msleep(150);
1114
1115         asix_sw_reset(dev, AX_SWRESET_PRL | AX_SWRESET_IPPD, 0);
1116         msleep(150);
1117
1118         asix_write_rx_ctl(dev, 0, 0);
1119
1120         if (data->phymode == PHY_MODE_MARVELL) {
1121                 marvell_phy_init(dev);
1122                 msleep(60);
1123         } else if (data->phymode == PHY_MODE_RTL8211CL)
1124                 rtl8211cl_phy_init(dev);
1125
1126         asix_phy_reset(dev, BMCR_RESET | BMCR_ANENABLE);
1127         asix_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
1128                         ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP);
1129         asix_mdio_write(dev->net, dev->mii.phy_id, MII_CTRL1000,
1130                         ADVERTISE_1000FULL);
1131
1132         asix_write_medium_mode(dev, AX88178_MEDIUM_DEFAULT, 0);
1133         mii_nway_restart(&dev->mii);
1134
1135         /* Rewrite MAC address */
1136         memcpy(data->mac_addr, dev->net->dev_addr, ETH_ALEN);
1137         ret = asix_write_cmd(dev, AX_CMD_WRITE_NODE_ID, 0, 0, ETH_ALEN,
1138                                                         data->mac_addr, 0);
1139         if (ret < 0)
1140                 return ret;
1141
1142         ret = asix_write_rx_ctl(dev, AX_DEFAULT_RX_CTL, 0);
1143         if (ret < 0)
1144                 return ret;
1145
1146         return 0;
1147 }
1148
1149 static int ax88178_link_reset(struct usbnet *dev)
1150 {
1151         u16 mode;
1152         struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET };
1153         struct asix_data *data = (struct asix_data *)&dev->data;
1154         u32 speed;
1155
1156         netdev_dbg(dev->net, "ax88178_link_reset()\n");
1157
1158         mii_check_media(&dev->mii, 1, 1);
1159         mii_ethtool_gset(&dev->mii, &ecmd);
1160         mode = AX88178_MEDIUM_DEFAULT;
1161         speed = ethtool_cmd_speed(&ecmd);
1162
1163         if (speed == SPEED_1000)
1164                 mode |= AX_MEDIUM_GM;
1165         else if (speed == SPEED_100)
1166                 mode |= AX_MEDIUM_PS;
1167         else
1168                 mode &= ~(AX_MEDIUM_PS | AX_MEDIUM_GM);
1169
1170         mode |= AX_MEDIUM_ENCK;
1171
1172         if (ecmd.duplex == DUPLEX_FULL)
1173                 mode |= AX_MEDIUM_FD;
1174         else
1175                 mode &= ~AX_MEDIUM_FD;
1176
1177         netdev_dbg(dev->net, "ax88178_link_reset() speed: %u duplex: %d setting mode to 0x%04x\n",
1178                    speed, ecmd.duplex, mode);
1179
1180         asix_write_medium_mode(dev, mode, 0);
1181
1182         if (data->phymode == PHY_MODE_MARVELL && data->ledmode)
1183                 marvell_led_status(dev, speed);
1184
1185         return 0;
1186 }
1187
1188 static void ax88178_set_mfb(struct usbnet *dev)
1189 {
1190         u16 mfb = AX_RX_CTL_MFB_16384;
1191         u16 rxctl;
1192         u16 medium;
1193         int old_rx_urb_size = dev->rx_urb_size;
1194
1195         if (dev->hard_mtu < 2048) {
1196                 dev->rx_urb_size = 2048;
1197                 mfb = AX_RX_CTL_MFB_2048;
1198         } else if (dev->hard_mtu < 4096) {
1199                 dev->rx_urb_size = 4096;
1200                 mfb = AX_RX_CTL_MFB_4096;
1201         } else if (dev->hard_mtu < 8192) {
1202                 dev->rx_urb_size = 8192;
1203                 mfb = AX_RX_CTL_MFB_8192;
1204         } else if (dev->hard_mtu < 16384) {
1205                 dev->rx_urb_size = 16384;
1206                 mfb = AX_RX_CTL_MFB_16384;
1207         }
1208
1209         rxctl = asix_read_rx_ctl(dev, 0);
1210         asix_write_rx_ctl(dev, (rxctl & ~AX_RX_CTL_MFB_16384) | mfb, 0);
1211
1212         medium = asix_read_medium_status(dev, 0);
1213         if (dev->net->mtu > 1500)
1214                 medium |= AX_MEDIUM_JFE;
1215         else
1216                 medium &= ~AX_MEDIUM_JFE;
1217         asix_write_medium_mode(dev, medium, 0);
1218
1219         if (dev->rx_urb_size > old_rx_urb_size)
1220                 usbnet_unlink_rx_urbs(dev);
1221 }
1222
1223 static int ax88178_change_mtu(struct net_device *net, int new_mtu)
1224 {
1225         struct usbnet *dev = netdev_priv(net);
1226         int ll_mtu = new_mtu + net->hard_header_len + 4;
1227
1228         netdev_dbg(dev->net, "ax88178_change_mtu() new_mtu=%d\n", new_mtu);
1229
1230         if ((ll_mtu % dev->maxpacket) == 0)
1231                 return -EDOM;
1232
1233         net->mtu = new_mtu;
1234         dev->hard_mtu = net->mtu + net->hard_header_len;
1235         ax88178_set_mfb(dev);
1236
1237         /* max qlen depend on hard_mtu and rx_urb_size */
1238         usbnet_update_max_qlen(dev);
1239
1240         return 0;
1241 }
1242
1243 static const struct net_device_ops ax88178_netdev_ops = {
1244         .ndo_open               = usbnet_open,
1245         .ndo_stop               = usbnet_stop,
1246         .ndo_start_xmit         = usbnet_start_xmit,
1247         .ndo_tx_timeout         = usbnet_tx_timeout,
1248         .ndo_get_stats64        = dev_get_tstats64,
1249         .ndo_set_mac_address    = asix_set_mac_address,
1250         .ndo_validate_addr      = eth_validate_addr,
1251         .ndo_set_rx_mode        = asix_set_multicast,
1252         .ndo_eth_ioctl          = asix_ioctl,
1253         .ndo_change_mtu         = ax88178_change_mtu,
1254 };
1255
1256 static int ax88178_bind(struct usbnet *dev, struct usb_interface *intf)
1257 {
1258         int ret;
1259         u8 buf[ETH_ALEN] = {0};
1260
1261         usbnet_get_endpoints(dev,intf);
1262
1263         /* Get the MAC address */
1264         ret = asix_read_cmd(dev, AX_CMD_READ_NODE_ID, 0, 0, ETH_ALEN, buf, 0);
1265         if (ret < 0) {
1266                 netdev_dbg(dev->net, "Failed to read MAC address: %d\n", ret);
1267                 return ret;
1268         }
1269
1270         asix_set_netdev_dev_addr(dev, buf);
1271
1272         /* Initialize MII structure */
1273         dev->mii.dev = dev->net;
1274         dev->mii.mdio_read = asix_mdio_read;
1275         dev->mii.mdio_write = asix_mdio_write;
1276         dev->mii.phy_id_mask = 0x1f;
1277         dev->mii.reg_num_mask = 0xff;
1278         dev->mii.supports_gmii = 1;
1279
1280         dev->mii.phy_id = asix_read_phy_addr(dev, true);
1281         if (dev->mii.phy_id < 0)
1282                 return dev->mii.phy_id;
1283
1284         dev->net->netdev_ops = &ax88178_netdev_ops;
1285         dev->net->ethtool_ops = &ax88178_ethtool_ops;
1286         dev->net->max_mtu = 16384 - (dev->net->hard_header_len + 4);
1287
1288         /* Blink LEDS so users know driver saw dongle */
1289         asix_sw_reset(dev, 0, 0);
1290         msleep(150);
1291
1292         asix_sw_reset(dev, AX_SWRESET_PRL | AX_SWRESET_IPPD, 0);
1293         msleep(150);
1294
1295         /* Asix framing packs multiple eth frames into a 2K usb bulk transfer */
1296         if (dev->driver_info->flags & FLAG_FRAMING_AX) {
1297                 /* hard_mtu  is still the default - the device does not support
1298                    jumbo eth frames */
1299                 dev->rx_urb_size = 2048;
1300         }
1301
1302         dev->driver_priv = kzalloc(sizeof(struct asix_common_private), GFP_KERNEL);
1303         if (!dev->driver_priv)
1304                         return -ENOMEM;
1305
1306         return 0;
1307 }
1308
1309 static const struct driver_info ax8817x_info = {
1310         .description = "ASIX AX8817x USB 2.0 Ethernet",
1311         .bind = ax88172_bind,
1312         .status = asix_status,
1313         .link_reset = ax88172_link_reset,
1314         .reset = ax88172_link_reset,
1315         .flags =  FLAG_ETHER | FLAG_LINK_INTR,
1316         .data = 0x00130103,
1317 };
1318
1319 static const struct driver_info dlink_dub_e100_info = {
1320         .description = "DLink DUB-E100 USB Ethernet",
1321         .bind = ax88172_bind,
1322         .status = asix_status,
1323         .link_reset = ax88172_link_reset,
1324         .reset = ax88172_link_reset,
1325         .flags =  FLAG_ETHER | FLAG_LINK_INTR,
1326         .data = 0x009f9d9f,
1327 };
1328
1329 static const struct driver_info netgear_fa120_info = {
1330         .description = "Netgear FA-120 USB Ethernet",
1331         .bind = ax88172_bind,
1332         .status = asix_status,
1333         .link_reset = ax88172_link_reset,
1334         .reset = ax88172_link_reset,
1335         .flags =  FLAG_ETHER | FLAG_LINK_INTR,
1336         .data = 0x00130103,
1337 };
1338
1339 static const struct driver_info hawking_uf200_info = {
1340         .description = "Hawking UF200 USB Ethernet",
1341         .bind = ax88172_bind,
1342         .status = asix_status,
1343         .link_reset = ax88172_link_reset,
1344         .reset = ax88172_link_reset,
1345         .flags =  FLAG_ETHER | FLAG_LINK_INTR,
1346         .data = 0x001f1d1f,
1347 };
1348
1349 static const struct driver_info ax88772_info = {
1350         .description = "ASIX AX88772 USB 2.0 Ethernet",
1351         .bind = ax88772_bind,
1352         .unbind = ax88772_unbind,
1353         .status = asix_status,
1354         .reset = ax88772_reset,
1355         .stop = ax88772_stop,
1356         .flags = FLAG_ETHER | FLAG_FRAMING_AX | FLAG_LINK_INTR | FLAG_MULTI_PACKET,
1357         .rx_fixup = asix_rx_fixup_common,
1358         .tx_fixup = asix_tx_fixup,
1359 };
1360
1361 static const struct driver_info ax88772b_info = {
1362         .description = "ASIX AX88772B USB 2.0 Ethernet",
1363         .bind = ax88772_bind,
1364         .unbind = ax88772_unbind,
1365         .status = asix_status,
1366         .reset = ax88772_reset,
1367         .stop = ax88772_stop,
1368         .flags = FLAG_ETHER | FLAG_FRAMING_AX | FLAG_LINK_INTR |
1369                  FLAG_MULTI_PACKET,
1370         .rx_fixup = asix_rx_fixup_common,
1371         .tx_fixup = asix_tx_fixup,
1372         .data = FLAG_EEPROM_MAC,
1373 };
1374
1375 static const struct driver_info lxausb_t1l_info = {
1376         .description = "Linux Automation GmbH USB 10Base-T1L",
1377         .bind = ax88772_bind,
1378         .unbind = ax88772_unbind,
1379         .status = asix_status,
1380         .reset = ax88772_reset,
1381         .stop = ax88772_stop,
1382         .flags = FLAG_ETHER | FLAG_FRAMING_AX | FLAG_LINK_INTR |
1383                  FLAG_MULTI_PACKET,
1384         .rx_fixup = asix_rx_fixup_common,
1385         .tx_fixup = asix_tx_fixup,
1386         .data = FLAG_EEPROM_MAC,
1387 };
1388
1389 static const struct driver_info ax88178_info = {
1390         .description = "ASIX AX88178 USB 2.0 Ethernet",
1391         .bind = ax88178_bind,
1392         .unbind = ax88178_unbind,
1393         .status = asix_status,
1394         .link_reset = ax88178_link_reset,
1395         .reset = ax88178_reset,
1396         .flags = FLAG_ETHER | FLAG_FRAMING_AX | FLAG_LINK_INTR |
1397                  FLAG_MULTI_PACKET,
1398         .rx_fixup = asix_rx_fixup_common,
1399         .tx_fixup = asix_tx_fixup,
1400 };
1401
1402 /*
1403  * USBLINK 20F9 "USB 2.0 LAN" USB ethernet adapter, typically found in
1404  * no-name packaging.
1405  * USB device strings are:
1406  *   1: Manufacturer: USBLINK
1407  *   2: Product: HG20F9 USB2.0
1408  *   3: Serial: 000003
1409  * Appears to be compatible with Asix 88772B.
1410  */
1411 static const struct driver_info hg20f9_info = {
1412         .description = "HG20F9 USB 2.0 Ethernet",
1413         .bind = ax88772_bind,
1414         .unbind = ax88772_unbind,
1415         .status = asix_status,
1416         .reset = ax88772_reset,
1417         .flags = FLAG_ETHER | FLAG_FRAMING_AX | FLAG_LINK_INTR |
1418                  FLAG_MULTI_PACKET,
1419         .rx_fixup = asix_rx_fixup_common,
1420         .tx_fixup = asix_tx_fixup,
1421         .data = FLAG_EEPROM_MAC,
1422 };
1423
1424 static const struct usb_device_id       products [] = {
1425 {
1426         // Linksys USB200M
1427         USB_DEVICE (0x077b, 0x2226),
1428         .driver_info =  (unsigned long) &ax8817x_info,
1429 }, {
1430         // Netgear FA120
1431         USB_DEVICE (0x0846, 0x1040),
1432         .driver_info =  (unsigned long) &netgear_fa120_info,
1433 }, {
1434         // DLink DUB-E100
1435         USB_DEVICE (0x2001, 0x1a00),
1436         .driver_info =  (unsigned long) &dlink_dub_e100_info,
1437 }, {
1438         // Intellinet, ST Lab USB Ethernet
1439         USB_DEVICE (0x0b95, 0x1720),
1440         .driver_info =  (unsigned long) &ax8817x_info,
1441 }, {
1442         // Hawking UF200, TrendNet TU2-ET100
1443         USB_DEVICE (0x07b8, 0x420a),
1444         .driver_info =  (unsigned long) &hawking_uf200_info,
1445 }, {
1446         // Billionton Systems, USB2AR
1447         USB_DEVICE (0x08dd, 0x90ff),
1448         .driver_info =  (unsigned long) &ax8817x_info,
1449 }, {
1450         // Billionton Systems, GUSB2AM-1G-B
1451         USB_DEVICE(0x08dd, 0x0114),
1452         .driver_info =  (unsigned long) &ax88178_info,
1453 }, {
1454         // ATEN UC210T
1455         USB_DEVICE (0x0557, 0x2009),
1456         .driver_info =  (unsigned long) &ax8817x_info,
1457 }, {
1458         // Buffalo LUA-U2-KTX
1459         USB_DEVICE (0x0411, 0x003d),
1460         .driver_info =  (unsigned long) &ax8817x_info,
1461 }, {
1462         // Buffalo LUA-U2-GT 10/100/1000
1463         USB_DEVICE (0x0411, 0x006e),
1464         .driver_info =  (unsigned long) &ax88178_info,
1465 }, {
1466         // Sitecom LN-029 "USB 2.0 10/100 Ethernet adapter"
1467         USB_DEVICE (0x6189, 0x182d),
1468         .driver_info =  (unsigned long) &ax8817x_info,
1469 }, {
1470         // Sitecom LN-031 "USB 2.0 10/100/1000 Ethernet adapter"
1471         USB_DEVICE (0x0df6, 0x0056),
1472         .driver_info =  (unsigned long) &ax88178_info,
1473 }, {
1474         // Sitecom LN-028 "USB 2.0 10/100/1000 Ethernet adapter"
1475         USB_DEVICE (0x0df6, 0x061c),
1476         .driver_info =  (unsigned long) &ax88178_info,
1477 }, {
1478         // corega FEther USB2-TX
1479         USB_DEVICE (0x07aa, 0x0017),
1480         .driver_info =  (unsigned long) &ax8817x_info,
1481 }, {
1482         // Surecom EP-1427X-2
1483         USB_DEVICE (0x1189, 0x0893),
1484         .driver_info = (unsigned long) &ax8817x_info,
1485 }, {
1486         // goodway corp usb gwusb2e
1487         USB_DEVICE (0x1631, 0x6200),
1488         .driver_info = (unsigned long) &ax8817x_info,
1489 }, {
1490         // JVC MP-PRX1 Port Replicator
1491         USB_DEVICE (0x04f1, 0x3008),
1492         .driver_info = (unsigned long) &ax8817x_info,
1493 }, {
1494         // Lenovo U2L100P 10/100
1495         USB_DEVICE (0x17ef, 0x7203),
1496         .driver_info = (unsigned long)&ax88772b_info,
1497 }, {
1498         // ASIX AX88772B 10/100
1499         USB_DEVICE (0x0b95, 0x772b),
1500         .driver_info = (unsigned long) &ax88772b_info,
1501 }, {
1502         // ASIX AX88772 10/100
1503         USB_DEVICE (0x0b95, 0x7720),
1504         .driver_info = (unsigned long) &ax88772_info,
1505 }, {
1506         // ASIX AX88178 10/100/1000
1507         USB_DEVICE (0x0b95, 0x1780),
1508         .driver_info = (unsigned long) &ax88178_info,
1509 }, {
1510         // Logitec LAN-GTJ/U2A
1511         USB_DEVICE (0x0789, 0x0160),
1512         .driver_info = (unsigned long) &ax88178_info,
1513 }, {
1514         // Linksys USB200M Rev 2
1515         USB_DEVICE (0x13b1, 0x0018),
1516         .driver_info = (unsigned long) &ax88772_info,
1517 }, {
1518         // 0Q0 cable ethernet
1519         USB_DEVICE (0x1557, 0x7720),
1520         .driver_info = (unsigned long) &ax88772_info,
1521 }, {
1522         // DLink DUB-E100 H/W Ver B1
1523         USB_DEVICE (0x07d1, 0x3c05),
1524         .driver_info = (unsigned long) &ax88772_info,
1525 }, {
1526         // DLink DUB-E100 H/W Ver B1 Alternate
1527         USB_DEVICE (0x2001, 0x3c05),
1528         .driver_info = (unsigned long) &ax88772_info,
1529 }, {
1530        // DLink DUB-E100 H/W Ver C1
1531        USB_DEVICE (0x2001, 0x1a02),
1532        .driver_info = (unsigned long) &ax88772_info,
1533 }, {
1534         // Linksys USB1000
1535         USB_DEVICE (0x1737, 0x0039),
1536         .driver_info = (unsigned long) &ax88178_info,
1537 }, {
1538         // IO-DATA ETG-US2
1539         USB_DEVICE (0x04bb, 0x0930),
1540         .driver_info = (unsigned long) &ax88178_info,
1541 }, {
1542         // Belkin F5D5055
1543         USB_DEVICE(0x050d, 0x5055),
1544         .driver_info = (unsigned long) &ax88178_info,
1545 }, {
1546         // Apple USB Ethernet Adapter
1547         USB_DEVICE(0x05ac, 0x1402),
1548         .driver_info = (unsigned long) &ax88772_info,
1549 }, {
1550         // Cables-to-Go USB Ethernet Adapter
1551         USB_DEVICE(0x0b95, 0x772a),
1552         .driver_info = (unsigned long) &ax88772_info,
1553 }, {
1554         // ABOCOM for pci
1555         USB_DEVICE(0x14ea, 0xab11),
1556         .driver_info = (unsigned long) &ax88178_info,
1557 }, {
1558         // ASIX 88772a
1559         USB_DEVICE(0x0db0, 0xa877),
1560         .driver_info = (unsigned long) &ax88772_info,
1561 }, {
1562         // Asus USB Ethernet Adapter
1563         USB_DEVICE (0x0b95, 0x7e2b),
1564         .driver_info = (unsigned long)&ax88772b_info,
1565 }, {
1566         /* ASIX 88172a demo board */
1567         USB_DEVICE(0x0b95, 0x172a),
1568         .driver_info = (unsigned long) &ax88172a_info,
1569 }, {
1570         /*
1571          * USBLINK HG20F9 "USB 2.0 LAN"
1572          * Appears to have gazumped Linksys's manufacturer ID but
1573          * doesn't (yet) conflict with any known Linksys product.
1574          */
1575         USB_DEVICE(0x066b, 0x20f9),
1576         .driver_info = (unsigned long) &hg20f9_info,
1577 }, {
1578         // Linux Automation GmbH USB 10Base-T1L
1579         USB_DEVICE(0x33f7, 0x0004),
1580         .driver_info = (unsigned long) &lxausb_t1l_info,
1581 },
1582         { },            // END
1583 };
1584 MODULE_DEVICE_TABLE(usb, products);
1585
1586 static struct usb_driver asix_driver = {
1587         .name =         DRIVER_NAME,
1588         .id_table =     products,
1589         .probe =        usbnet_probe,
1590         .suspend =      asix_suspend,
1591         .resume =       asix_resume,
1592         .reset_resume = asix_resume,
1593         .disconnect =   usbnet_disconnect,
1594         .supports_autosuspend = 1,
1595         .disable_hub_initiated_lpm = 1,
1596 };
1597
1598 module_usb_driver(asix_driver);
1599
1600 MODULE_AUTHOR("David Hollis");
1601 MODULE_VERSION(DRIVER_VERSION);
1602 MODULE_DESCRIPTION("ASIX AX8817X based USB 2.0 Ethernet Devices");
1603 MODULE_LICENSE("GPL");
1604