drivers/net/usb/aqc111.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /* Aquantia Corp. Aquantia AQtion USB to 5GbE Controller
   3  * Copyright (C) 2003-2005 David Hollis <dhollis@davehollis.com>
   4  * Copyright (C) 2005 Phil Chang <pchang23@sbcglobal.net>
   5  * Copyright (C) 2002-2003 TiVo Inc.
   6  * Copyright (C) 2017-2018 ASIX
   7  * Copyright (C) 2018 Aquantia Corp.
   8  */
   9
  10 #include <linux/module.h>
  11 #include <linux/netdevice.h>
  12 #include <linux/ethtool.h>
  13 #include <linux/mii.h>
  14 #include <linux/usb.h>
  15 #include <linux/crc32.h>
  16 #include <linux/if_vlan.h>
  17 #include <linux/usb/cdc.h>
  18 #include <linux/usb/usbnet.h>
  19 #include <linux/linkmode.h>
  20
  21 #include "aqc111.h"
  22
  23 #define DRIVER_NAME "aqc111"
  24
  25 static int aqc111_read_cmd_nopm(struct usbnet *dev, u8 cmd, u16 value,
  26                                 u16 index, u16 size, void *data)
  27 {
  28         int ret;
  29
  30         ret = usbnet_read_cmd_nopm(dev, cmd, USB_DIR_IN | USB_TYPE_VENDOR |
  31                                    USB_RECIP_DEVICE, value, index, data, size);
  32
  33         if (unlikely(ret < 0))
  34                 netdev_warn(dev->net,
  35                             "Failed to read(0x%x) reg index 0x%04x: %d\n",
  36                             cmd, index, ret);
  37
  38         return ret;
  39 }
  40
  41 static int aqc111_read_cmd(struct usbnet *dev, u8 cmd, u16 value,
  42                            u16 index, u16 size, void *data)
  43 {
  44         int ret;
  45
  46         ret = usbnet_read_cmd(dev, cmd, USB_DIR_IN | USB_TYPE_VENDOR |
  47                               USB_RECIP_DEVICE, value, index, data, size);
  48
  49         if (unlikely(ret < 0))
  50                 netdev_warn(dev->net,
  51                             "Failed to read(0x%x) reg index 0x%04x: %d\n",
  52                             cmd, index, ret);
  53
  54         return ret;
  55 }
  56
  57 static int aqc111_read16_cmd_nopm(struct usbnet *dev, u8 cmd, u16 value,
  58                                   u16 index, u16 *data)
  59 {
  60         int ret = 0;
  61
  62         ret = aqc111_read_cmd_nopm(dev, cmd, value, index, sizeof(*data), data);
  63         le16_to_cpus(data);
  64
  65         return ret;
  66 }
  67
  68 static int aqc111_read16_cmd(struct usbnet *dev, u8 cmd, u16 value,
  69                              u16 index, u16 *data)
  70 {
  71         int ret = 0;
  72
  73         ret = aqc111_read_cmd(dev, cmd, value, index, sizeof(*data), data);
  74         le16_to_cpus(data);
  75
  76         return ret;
  77 }
  78
  79 static int __aqc111_write_cmd(struct usbnet *dev, u8 cmd, u8 reqtype,
  80                               u16 value, u16 index, u16 size, const void *data)
  81 {
  82         int err = -ENOMEM;
  83         void *buf = NULL;
  84
  85         netdev_dbg(dev->net,
  86                    "%s cmd=%#x reqtype=%#x value=%#x index=%#x size=%d\n",
  87                    __func__, cmd, reqtype, value, index, size);
  88
  89         if (data) {
  90                 buf = kmemdup(data, size, GFP_KERNEL);
  91                 if (!buf)
  92                         goto out;
  93         }
  94
  95         err = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0),
  96                               cmd, reqtype, value, index, buf, size,
  97                               (cmd == AQ_PHY_POWER) ? AQ_USB_PHY_SET_TIMEOUT :
  98                               AQ_USB_SET_TIMEOUT);
  99
 100         if (unlikely(err < 0))
 101                 netdev_warn(dev->net,
 102                             "Failed to write(0x%x) reg index 0x%04x: %d\n",
 103                             cmd, index, err);
 104         kfree(buf);
 105
 106 out:
 107         return err;
 108 }
 109
 110 static int aqc111_write_cmd_nopm(struct usbnet *dev, u8 cmd, u16 value,
 111                                  u16 index, u16 size, void *data)
 112 {
 113         int ret;
 114
 115         ret = __aqc111_write_cmd(dev, cmd, USB_DIR_OUT | USB_TYPE_VENDOR |
 116                                  USB_RECIP_DEVICE, value, index, size, data);
 117
 118         return ret;
 119 }
 120
 121 static int aqc111_write_cmd(struct usbnet *dev, u8 cmd, u16 value,
 122                             u16 index, u16 size, void *data)
 123 {
 124         int ret;
 125
 126         if (usb_autopm_get_interface(dev->intf) < 0)
 127                 return -ENODEV;
 128
 129         ret = __aqc111_write_cmd(dev, cmd, USB_DIR_OUT | USB_TYPE_VENDOR |
 130                                  USB_RECIP_DEVICE, value, index, size, data);
 131
 132         usb_autopm_put_interface(dev->intf);
 133
 134         return ret;
 135 }
 136
 137 static int aqc111_write16_cmd_nopm(struct usbnet *dev, u8 cmd, u16 value,
 138                                    u16 index, u16 *data)
 139 {
 140         u16 tmp = *data;
 141
 142         cpu_to_le16s(&tmp);
 143
 144         return aqc111_write_cmd_nopm(dev, cmd, value, index, sizeof(tmp), &tmp);
 145 }
 146
 147 static int aqc111_write16_cmd(struct usbnet *dev, u8 cmd, u16 value,
 148                               u16 index, u16 *data)
 149 {
 150         u16 tmp = *data;
 151
 152         cpu_to_le16s(&tmp);
 153
 154         return aqc111_write_cmd(dev, cmd, value, index, sizeof(tmp), &tmp);
 155 }
 156
 157 static int aqc111_write32_cmd_nopm(struct usbnet *dev, u8 cmd, u16 value,
 158                                    u16 index, u32 *data)
 159 {
 160         u32 tmp = *data;
 161
 162         cpu_to_le32s(&tmp);
 163
 164         return aqc111_write_cmd_nopm(dev, cmd, value, index, sizeof(tmp), &tmp);
 165 }
 166
 167 static int aqc111_write32_cmd(struct usbnet *dev, u8 cmd, u16 value,
 168                               u16 index, u32 *data)
 169 {
 170         u32 tmp = *data;
 171
 172         cpu_to_le32s(&tmp);
 173
 174         return aqc111_write_cmd(dev, cmd, value, index, sizeof(tmp), &tmp);
 175 }
 176
 177 static int aqc111_write_cmd_async(struct usbnet *dev, u8 cmd, u16 value,
 178                                   u16 index, u16 size, void *data)
 179 {
 180         return usbnet_write_cmd_async(dev, cmd, USB_DIR_OUT | USB_TYPE_VENDOR |
 181                                       USB_RECIP_DEVICE, value, index, data,
 182                                       size);
 183 }
 184
 185 static int aqc111_write16_cmd_async(struct usbnet *dev, u8 cmd, u16 value,
 186                                     u16 index, u16 *data)
 187 {
 188         u16 tmp = *data;
 189
 190         cpu_to_le16s(&tmp);
 191
 192         return aqc111_write_cmd_async(dev, cmd, value, index,
 193                                       sizeof(tmp), &tmp);
 194 }
 195
 196 static void aqc111_get_drvinfo(struct net_device *net,
 197                                struct ethtool_drvinfo *info)
 198 {
 199         struct usbnet *dev = netdev_priv(net);
 200         struct aqc111_data *aqc111_data = dev->driver_priv;
 201
 202         /* Inherit standard device info */
 203         usbnet_get_drvinfo(net, info);
 204         strlcpy(info->driver, DRIVER_NAME, sizeof(info->driver));
 205         snprintf(info->fw_version, sizeof(info->fw_version), "%u.%u.%u",
 206                  aqc111_data->fw_ver.major,
 207                  aqc111_data->fw_ver.minor,
 208                  aqc111_data->fw_ver.rev);
 209         info->eedump_len = 0x00;
 210         info->regdump_len = 0x00;
 211 }
 212
 213 static void aqc111_get_wol(struct net_device *net,
 214                            struct ethtool_wolinfo *wolinfo)
 215 {
 216         struct usbnet *dev = netdev_priv(net);
 217         struct aqc111_data *aqc111_data = dev->driver_priv;
 218
 219         wolinfo->supported = WAKE_MAGIC;
 220         wolinfo->wolopts = 0;
 221
 222         if (aqc111_data->wol_flags & AQ_WOL_FLAG_MP)
 223                 wolinfo->wolopts |= WAKE_MAGIC;
 224 }
 225
 226 static int aqc111_set_wol(struct net_device *net,
 227                           struct ethtool_wolinfo *wolinfo)
 228 {
 229         struct usbnet *dev = netdev_priv(net);
 230         struct aqc111_data *aqc111_data = dev->driver_priv;
 231
 232         if (wolinfo->wolopts & ~WAKE_MAGIC)
 233                 return -EINVAL;
 234
 235         aqc111_data->wol_flags = 0;
 236         if (wolinfo->wolopts & WAKE_MAGIC)
 237                 aqc111_data->wol_flags |= AQ_WOL_FLAG_MP;
 238
 239         return 0;
 240 }
 241
 242 static void aqc111_speed_to_link_mode(u32 speed,
 243                                       struct ethtool_link_ksettings *elk)
 244 {
 245         switch (speed) {
 246         case SPEED_5000:
 247                 ethtool_link_ksettings_add_link_mode(elk, advertising,
 248                                                      5000baseT_Full);
 249                 break;
 250         case SPEED_2500:
 251                 ethtool_link_ksettings_add_link_mode(elk, advertising,
 252                                                      2500baseT_Full);
 253                 break;
 254         case SPEED_1000:
 255                 ethtool_link_ksettings_add_link_mode(elk, advertising,
 256                                                      1000baseT_Full);
 257                 break;
 258         case SPEED_100:
 259                 ethtool_link_ksettings_add_link_mode(elk, advertising,
 260                                                      100baseT_Full);
 261                 break;
 262         }
 263 }
 264
 265 static int aqc111_get_link_ksettings(struct net_device *net,
 266                                      struct ethtool_link_ksettings *elk)
 267 {
 268         struct usbnet *dev = netdev_priv(net);
 269         struct aqc111_data *aqc111_data = dev->driver_priv;
 270         enum usb_device_speed usb_speed = dev->udev->speed;
 271         u32 speed = SPEED_UNKNOWN;
 272
 273         ethtool_link_ksettings_zero_link_mode(elk, supported);
 274         ethtool_link_ksettings_add_link_mode(elk, supported,
 275                                              100baseT_Full);
 276         ethtool_link_ksettings_add_link_mode(elk, supported,
 277                                              1000baseT_Full);
 278         if (usb_speed == USB_SPEED_SUPER) {
 279                 ethtool_link_ksettings_add_link_mode(elk, supported,
 280                                                      2500baseT_Full);
 281                 ethtool_link_ksettings_add_link_mode(elk, supported,
 282                                                      5000baseT_Full);
 283         }
 284         ethtool_link_ksettings_add_link_mode(elk, supported, TP);
 285         ethtool_link_ksettings_add_link_mode(elk, supported, Autoneg);
 286
 287         elk->base.port = PORT_TP;
 288         elk->base.transceiver = XCVR_INTERNAL;
 289
 290         elk->base.mdio_support = 0x00; /*Not supported*/
 291
 292         if (aqc111_data->autoneg)
 293                 linkmode_copy(elk->link_modes.advertising,
 294                               elk->link_modes.supported);
 295         else
 296                 aqc111_speed_to_link_mode(aqc111_data->advertised_speed, elk);
 297
 298         elk->base.autoneg = aqc111_data->autoneg;
 299
 300         switch (aqc111_data->link_speed) {
 301         case AQ_INT_SPEED_5G:
 302                 speed = SPEED_5000;
 303                 break;
 304         case AQ_INT_SPEED_2_5G:
 305                 speed = SPEED_2500;
 306                 break;
 307         case AQ_INT_SPEED_1G:
 308                 speed = SPEED_1000;
 309                 break;
 310         case AQ_INT_SPEED_100M:
 311                 speed = SPEED_100;
 312                 break;
 313         }
 314         elk->base.duplex = DUPLEX_FULL;
 315         elk->base.speed = speed;
 316
 317         return 0;
 318 }
 319
 320 static void aqc111_set_phy_speed(struct usbnet *dev, u8 autoneg, u16 speed)
 321 {
 322         struct aqc111_data *aqc111_data = dev->driver_priv;
 323
 324         aqc111_data->phy_cfg &= ~AQ_ADV_MASK;
 325         aqc111_data->phy_cfg |= AQ_PAUSE;
 326         aqc111_data->phy_cfg |= AQ_ASYM_PAUSE;
 327         aqc111_data->phy_cfg |= AQ_DOWNSHIFT;
 328         aqc111_data->phy_cfg &= ~AQ_DSH_RETRIES_MASK;
 329         aqc111_data->phy_cfg |= (3 << AQ_DSH_RETRIES_SHIFT) &
 330                                 AQ_DSH_RETRIES_MASK;
 331
 332         if (autoneg == AUTONEG_ENABLE) {
 333                 switch (speed) {
 334                 case SPEED_5000:
 335                         aqc111_data->phy_cfg |= AQ_ADV_5G;
 336                         /* fall-through */
 337                 case SPEED_2500:
 338                         aqc111_data->phy_cfg |= AQ_ADV_2G5;
 339                         /* fall-through */
 340                 case SPEED_1000:
 341                         aqc111_data->phy_cfg |= AQ_ADV_1G;
 342                         /* fall-through */
 343                 case SPEED_100:
 344                         aqc111_data->phy_cfg |= AQ_ADV_100M;
 345                         /* fall-through */
 346                 }
 347         } else {
 348                 switch (speed) {
 349                 case SPEED_5000:
 350                         aqc111_data->phy_cfg |= AQ_ADV_5G;
 351                         break;
 352                 case SPEED_2500:
 353                         aqc111_data->phy_cfg |= AQ_ADV_2G5;
 354                         break;
 355                 case SPEED_1000:
 356                         aqc111_data->phy_cfg |= AQ_ADV_1G;
 357                         break;
 358                 case SPEED_100:
 359                         aqc111_data->phy_cfg |= AQ_ADV_100M;
 360                         break;
 361                 }
 362         }
 363
 364         aqc111_write32_cmd(dev, AQ_PHY_OPS, 0, 0, &aqc111_data->phy_cfg);
 365 }
 366
 367 static int aqc111_set_link_ksettings(struct net_device *net,
 368                                      const struct ethtool_link_ksettings *elk)
 369 {
 370         struct usbnet *dev = netdev_priv(net);
 371         struct aqc111_data *aqc111_data = dev->driver_priv;
 372         enum usb_device_speed usb_speed = dev->udev->speed;
 373         u8 autoneg = elk->base.autoneg;
 374         u32 speed = elk->base.speed;
 375
 376         if (autoneg == AUTONEG_ENABLE) {
 377                 if (aqc111_data->autoneg != AUTONEG_ENABLE) {
 378                         aqc111_data->autoneg = AUTONEG_ENABLE;
 379                         aqc111_data->advertised_speed =
 380                                         (usb_speed == USB_SPEED_SUPER) ?
 381                                          SPEED_5000 : SPEED_1000;
 382                         aqc111_set_phy_speed(dev, aqc111_data->autoneg,
 383                                              aqc111_data->advertised_speed);
 384                 }
 385         } else {
 386                 if (speed != SPEED_100 &&
 387                     speed != SPEED_1000 &&
 388                     speed != SPEED_2500 &&
 389                     speed != SPEED_5000 &&
 390                     speed != SPEED_UNKNOWN)
 391                         return -EINVAL;
 392
 393                 if (elk->base.duplex != DUPLEX_FULL)
 394                         return -EINVAL;
 395
 396                 if (usb_speed != USB_SPEED_SUPER && speed > SPEED_1000)
 397                         return -EINVAL;
 398
 399                 aqc111_data->autoneg = AUTONEG_DISABLE;
 400                 if (speed != SPEED_UNKNOWN)
 401                         aqc111_data->advertised_speed = speed;
 402
 403                 aqc111_set_phy_speed(dev, aqc111_data->autoneg,
 404                                      aqc111_data->advertised_speed);
 405         }
 406
 407         return 0;
 408 }
 409
 410 static const struct ethtool_ops aqc111_ethtool_ops = {
 411         .get_drvinfo = aqc111_get_drvinfo,
 412         .get_wol = aqc111_get_wol,
 413         .set_wol = aqc111_set_wol,
 414         .get_msglevel = usbnet_get_msglevel,
 415         .set_msglevel = usbnet_set_msglevel,
 416         .get_link = ethtool_op_get_link,
 417         .get_link_ksettings = aqc111_get_link_ksettings,
 418         .set_link_ksettings = aqc111_set_link_ksettings
 419 };
 420
 421 static int aqc111_change_mtu(struct net_device *net, int new_mtu)
 422 {
 423         struct usbnet *dev = netdev_priv(net);
 424         u16 reg16 = 0;
 425         u8 buf[5];
 426
 427         net->mtu = new_mtu;
 428         dev->hard_mtu = net->mtu + net->hard_header_len;
 429
 430         aqc111_read16_cmd(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE,
 431                           2, &reg16);
 432         if (net->mtu > 1500)
 433                 reg16 |= SFR_MEDIUM_JUMBO_EN;
 434         else
 435                 reg16 &= ~SFR_MEDIUM_JUMBO_EN;
 436
 437         aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE,
 438                            2, &reg16);
 439
 440         if (dev->net->mtu > 12500 && dev->net->mtu <= 16334) {
 441                 memcpy(buf, &AQC111_BULKIN_SIZE[2], 5);
 442                 /* RX bulk configuration */
 443                 aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_RX_BULKIN_QCTRL,
 444                                  5, 5, buf);
 445         }
 446
 447         /* Set high low water level */
 448         if (dev->net->mtu <= 4500)
 449                 reg16 = 0x0810;
 450         else if (dev->net->mtu <= 9500)
 451                 reg16 = 0x1020;
 452         else if (dev->net->mtu <= 12500)
 453                 reg16 = 0x1420;
 454         else if (dev->net->mtu <= 16334)
 455                 reg16 = 0x1A20;
 456         else
 457                 return 0;
 458
 459         aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_PAUSE_WATERLVL_LOW,
 460                            2, &reg16);
 461
 462         return 0;
 463 }
 464
 465 static int aqc111_set_mac_addr(struct net_device *net, void *p)
 466 {
 467         struct usbnet *dev = netdev_priv(net);
 468         int ret = 0;
 469
 470         ret = eth_mac_addr(net, p);
 471         if (ret < 0)
 472                 return ret;
 473
 474         /* Set the MAC address */
 475         return aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_NODE_ID, ETH_ALEN,
 476                                 ETH_ALEN, net->dev_addr);
 477 }
 478
 479 static int aqc111_vlan_rx_kill_vid(struct net_device *net,
 480                                    __be16 proto, u16 vid)
 481 {
 482         struct usbnet *dev = netdev_priv(net);
 483         u8 vlan_ctrl = 0;
 484         u16 reg16 = 0;
 485         u8 reg8 = 0;
 486
 487         aqc111_read_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_CONTROL, 1, 1, &reg8);
 488         vlan_ctrl = reg8;
 489
 490         /* Address */
 491         reg8 = (vid / 16);
 492         aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_ADDRESS, 1, 1, &reg8);
 493         /* Data */
 494         reg8 = vlan_ctrl | SFR_VLAN_CONTROL_RD;
 495         aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_CONTROL, 1, 1, &reg8);
 496         aqc111_read16_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_DATA0, 2, &reg16);
 497         reg16 &= ~(1 << (vid % 16));
 498         aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_DATA0, 2, &reg16);
 499         reg8 = vlan_ctrl | SFR_VLAN_CONTROL_WE;
 500         aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_CONTROL, 1, 1, &reg8);
 501
 502         return 0;
 503 }
 504
 505 static int aqc111_vlan_rx_add_vid(struct net_device *net, __be16 proto, u16 vid)
 506 {
 507         struct usbnet *dev = netdev_priv(net);
 508         u8 vlan_ctrl = 0;
 509         u16 reg16 = 0;
 510         u8 reg8 = 0;
 511
 512         aqc111_read_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_CONTROL, 1, 1, &reg8);
 513         vlan_ctrl = reg8;
 514
 515         /* Address */
 516         reg8 = (vid / 16);
 517         aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_ADDRESS, 1, 1, &reg8);
 518         /* Data */
 519         reg8 = vlan_ctrl | SFR_VLAN_CONTROL_RD;
 520         aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_CONTROL, 1, 1, &reg8);
 521         aqc111_read16_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_DATA0, 2, &reg16);
 522         reg16 |= (1 << (vid % 16));
 523         aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_DATA0, 2, &reg16);
 524         reg8 = vlan_ctrl | SFR_VLAN_CONTROL_WE;
 525         aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_CONTROL, 1, 1, &reg8);
 526
 527         return 0;
 528 }
 529
 530 static void aqc111_set_rx_mode(struct net_device *net)
 531 {
 532         struct usbnet *dev = netdev_priv(net);
 533         struct aqc111_data *aqc111_data = dev->driver_priv;
 534         int mc_count = 0;
 535
 536         mc_count = netdev_mc_count(net);
 537
 538         aqc111_data->rxctl &= ~(SFR_RX_CTL_PRO | SFR_RX_CTL_AMALL |
 539                                 SFR_RX_CTL_AM);
 540
 541         if (net->flags & IFF_PROMISC) {
 542                 aqc111_data->rxctl |= SFR_RX_CTL_PRO;
 543         } else if ((net->flags & IFF_ALLMULTI) || mc_count > AQ_MAX_MCAST) {
 544                 aqc111_data->rxctl |= SFR_RX_CTL_AMALL;
 545         } else if (!netdev_mc_empty(net)) {
 546                 u8 m_filter[AQ_MCAST_FILTER_SIZE] = { 0 };
 547                 struct netdev_hw_addr *ha = NULL;
 548                 u32 crc_bits = 0;
 549
 550                 netdev_for_each_mc_addr(ha, net) {
 551                         crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26;
 552                         m_filter[crc_bits >> 3] |= BIT(crc_bits & 7);
 553                 }
 554
 555                 aqc111_write_cmd_async(dev, AQ_ACCESS_MAC,
 556                                        SFR_MULTI_FILTER_ARRY,
 557                                        AQ_MCAST_FILTER_SIZE,
 558                                        AQ_MCAST_FILTER_SIZE, m_filter);
 559
 560                 aqc111_data->rxctl |= SFR_RX_CTL_AM;
 561         }
 562
 563         aqc111_write16_cmd_async(dev, AQ_ACCESS_MAC, SFR_RX_CTL,
 564                                  2, &aqc111_data->rxctl);
 565 }
 566
 567 static int aqc111_set_features(struct net_device *net,
 568                                netdev_features_t features)
 569 {
 570         struct usbnet *dev = netdev_priv(net);
 571         struct aqc111_data *aqc111_data = dev->driver_priv;
 572         netdev_features_t changed = net->features ^ features;
 573         u16 reg16 = 0;
 574         u8 reg8 = 0;
 575
 576         if (changed & NETIF_F_IP_CSUM) {
 577                 aqc111_read_cmd(dev, AQ_ACCESS_MAC, SFR_TXCOE_CTL, 1, 1, &reg8);
 578                 reg8 ^= SFR_TXCOE_TCP | SFR_TXCOE_UDP;
 579                 aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_TXCOE_CTL,
 580                                  1, 1, &reg8);
 581         }
 582
 583         if (changed & NETIF_F_IPV6_CSUM) {
 584                 aqc111_read_cmd(dev, AQ_ACCESS_MAC, SFR_TXCOE_CTL, 1, 1, &reg8);
 585                 reg8 ^= SFR_TXCOE_TCPV6 | SFR_TXCOE_UDPV6;
 586                 aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_TXCOE_CTL,
 587                                  1, 1, &reg8);
 588         }
 589
 590         if (changed & NETIF_F_RXCSUM) {
 591                 aqc111_read_cmd(dev, AQ_ACCESS_MAC, SFR_RXCOE_CTL, 1, 1, &reg8);
 592                 if (features & NETIF_F_RXCSUM) {
 593                         aqc111_data->rx_checksum = 1;
 594                         reg8 &= ~(SFR_RXCOE_IP | SFR_RXCOE_TCP | SFR_RXCOE_UDP |
 595                                   SFR_RXCOE_TCPV6 | SFR_RXCOE_UDPV6);
 596                 } else {
 597                         aqc111_data->rx_checksum = 0;
 598                         reg8 |= SFR_RXCOE_IP | SFR_RXCOE_TCP | SFR_RXCOE_UDP |
 599                                 SFR_RXCOE_TCPV6 | SFR_RXCOE_UDPV6;
 600                 }
 601
 602                 aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_RXCOE_CTL,
 603                                  1, 1, &reg8);
 604         }
 605         if (changed & NETIF_F_HW_VLAN_CTAG_FILTER) {
 606                 if (features & NETIF_F_HW_VLAN_CTAG_FILTER) {
 607                         u16 i = 0;
 608
 609                         for (i = 0; i < 256; i++) {
 610                                 /* Address */
 611                                 reg8 = i;
 612                                 aqc111_write_cmd(dev, AQ_ACCESS_MAC,
 613                                                  SFR_VLAN_ID_ADDRESS,
 614                                                  1, 1, &reg8);
 615                                 /* Data */
 616                                 aqc111_write16_cmd(dev, AQ_ACCESS_MAC,
 617                                                    SFR_VLAN_ID_DATA0,
 618                                                    2, &reg16);
 619                                 reg8 = SFR_VLAN_CONTROL_WE;
 620                                 aqc111_write_cmd(dev, AQ_ACCESS_MAC,
 621                                                  SFR_VLAN_ID_CONTROL,
 622                                                  1, 1, &reg8);
 623                         }
 624                         aqc111_read_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_CONTROL,
 625                                         1, 1, &reg8);
 626                         reg8 |= SFR_VLAN_CONTROL_VFE;
 627                         aqc111_write_cmd(dev, AQ_ACCESS_MAC,
 628                                          SFR_VLAN_ID_CONTROL, 1, 1, &reg8);
 629                 } else {
 630                         aqc111_read_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_CONTROL,
 631                                         1, 1, &reg8);
 632                         reg8 &= ~SFR_VLAN_CONTROL_VFE;
 633                         aqc111_write_cmd(dev, AQ_ACCESS_MAC,
 634                                          SFR_VLAN_ID_CONTROL, 1, 1, &reg8);
 635                 }
 636         }
 637
 638         return 0;
 639 }
 640
 641 static const struct net_device_ops aqc111_netdev_ops = {
 642         .ndo_open               = usbnet_open,
 643         .ndo_stop               = usbnet_stop,
 644         .ndo_start_xmit         = usbnet_start_xmit,
 645         .ndo_tx_timeout         = usbnet_tx_timeout,
 646         .ndo_get_stats64        = usbnet_get_stats64,
 647         .ndo_change_mtu         = aqc111_change_mtu,
 648         .ndo_set_mac_address    = aqc111_set_mac_addr,
 649         .ndo_validate_addr      = eth_validate_addr,
 650         .ndo_vlan_rx_add_vid    = aqc111_vlan_rx_add_vid,
 651         .ndo_vlan_rx_kill_vid   = aqc111_vlan_rx_kill_vid,
 652         .ndo_set_rx_mode        = aqc111_set_rx_mode,
 653         .ndo_set_features       = aqc111_set_features,
 654 };
 655
 656 static int aqc111_read_perm_mac(struct usbnet *dev)
 657 {
 658         u8 buf[ETH_ALEN];
 659         int ret;
 660
 661         ret = aqc111_read_cmd(dev, AQ_FLASH_PARAMETERS, 0, 0, ETH_ALEN, buf);
 662         if (ret < 0)
 663                 goto out;
 664
 665         ether_addr_copy(dev->net->perm_addr, buf);
 666
 667         return 0;
 668 out:
 669         return ret;
 670 }
 671
 672 static void aqc111_read_fw_version(struct usbnet *dev,
 673                                    struct aqc111_data *aqc111_data)
 674 {
 675         aqc111_read_cmd(dev, AQ_ACCESS_MAC, AQ_FW_VER_MAJOR,
 676                         1, 1, &aqc111_data->fw_ver.major);
 677         aqc111_read_cmd(dev, AQ_ACCESS_MAC, AQ_FW_VER_MINOR,
 678                         1, 1, &aqc111_data->fw_ver.minor);
 679         aqc111_read_cmd(dev, AQ_ACCESS_MAC, AQ_FW_VER_REV,
 680                         1, 1, &aqc111_data->fw_ver.rev);
 681
 682         if (aqc111_data->fw_ver.major & 0x80)
 683                 aqc111_data->fw_ver.major &= ~0x80;
 684 }
 685
 686 static int aqc111_bind(struct usbnet *dev, struct usb_interface *intf)
 687 {
 688         struct usb_device *udev = interface_to_usbdev(intf);
 689         enum usb_device_speed usb_speed = udev->speed;
 690         struct aqc111_data *aqc111_data;
 691         int ret;
 692
 693         /* Check if vendor configuration */
 694         if (udev->actconfig->desc.bConfigurationValue != 1) {
 695                 usb_driver_set_configuration(udev, 1);
 696                 return -ENODEV;
 697         }
 698
 699         usb_reset_configuration(dev->udev);
 700
 701         ret = usbnet_get_endpoints(dev, intf);
 702         if (ret < 0) {
 703                 netdev_dbg(dev->net, "usbnet_get_endpoints failed");
 704                 return ret;
 705         }
 706
 707         aqc111_data = kzalloc(sizeof(*aqc111_data), GFP_KERNEL);
 708         if (!aqc111_data)
 709                 return -ENOMEM;
 710
 711         /* store aqc111_data pointer in device data field */
 712         dev->driver_priv = aqc111_data;
 713
 714         /* Init the MAC address */
 715         ret = aqc111_read_perm_mac(dev);
 716         if (ret)
 717                 goto out;
 718
 719         ether_addr_copy(dev->net->dev_addr, dev->net->perm_addr);
 720
 721         /* Set Rx urb size */
 722         dev->rx_urb_size = URB_SIZE;
 723
 724         /* Set TX needed headroom & tailroom */
 725         dev->net->needed_headroom += sizeof(u64);
 726         dev->net->needed_tailroom += sizeof(u64);
 727
 728         dev->net->max_mtu = 16334;
 729
 730         dev->net->netdev_ops = &aqc111_netdev_ops;
 731         dev->net->ethtool_ops = &aqc111_ethtool_ops;
 732
 733         if (usb_device_no_sg_constraint(dev->udev))
 734                 dev->can_dma_sg = 1;
 735
 736         dev->net->hw_features |= AQ_SUPPORT_HW_FEATURE;
 737         dev->net->features |= AQ_SUPPORT_FEATURE;
 738         dev->net->vlan_features |= AQ_SUPPORT_VLAN_FEATURE;
 739
 740         netif_set_gso_max_size(dev->net, 65535);
 741
 742         aqc111_read_fw_version(dev, aqc111_data);
 743         aqc111_data->autoneg = AUTONEG_ENABLE;
 744         aqc111_data->advertised_speed = (usb_speed == USB_SPEED_SUPER) ?
 745                                          SPEED_5000 : SPEED_1000;
 746
 747         return 0;
 748
 749 out:
 750         kfree(aqc111_data);
 751         return ret;
 752 }
 753
 754 static void aqc111_unbind(struct usbnet *dev, struct usb_interface *intf)
 755 {
 756         struct aqc111_data *aqc111_data = dev->driver_priv;
 757         u16 reg16;
 758
 759         /* Force bz */
 760         reg16 = SFR_PHYPWR_RSTCTL_BZ;
 761         aqc111_write16_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_PHYPWR_RSTCTL,
 762                                 2, &reg16);
 763         reg16 = 0;
 764         aqc111_write16_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_PHYPWR_RSTCTL,
 765                                 2, &reg16);
 766
 767         /* Power down ethernet PHY */
 768         aqc111_data->phy_cfg &= ~AQ_ADV_MASK;
 769         aqc111_data->phy_cfg |= AQ_LOW_POWER;
 770         aqc111_data->phy_cfg &= ~AQ_PHY_POWER_EN;
 771         aqc111_write32_cmd_nopm(dev, AQ_PHY_OPS, 0, 0,
 772                                 &aqc111_data->phy_cfg);
 773
 774         kfree(aqc111_data);
 775 }
 776
 777 static void aqc111_status(struct usbnet *dev, struct urb *urb)
 778 {
 779         struct aqc111_data *aqc111_data = dev->driver_priv;
 780         u64 *event_data = NULL;
 781         int link = 0;
 782
 783         if (urb->actual_length < sizeof(*event_data))
 784                 return;
 785
 786         event_data = urb->transfer_buffer;
 787         le64_to_cpus(event_data);
 788
 789         if (*event_data & AQ_LS_MASK)
 790                 link = 1;
 791         else
 792                 link = 0;
 793
 794         aqc111_data->link_speed = (*event_data & AQ_SPEED_MASK) >>
 795                                   AQ_SPEED_SHIFT;
 796         aqc111_data->link = link;
 797
 798         if (netif_carrier_ok(dev->net) != link)
 799                 usbnet_defer_kevent(dev, EVENT_LINK_RESET);
 800 }
 801
 802 static void aqc111_configure_rx(struct usbnet *dev,
 803                                 struct aqc111_data *aqc111_data)
 804 {
 805         enum usb_device_speed usb_speed = dev->udev->speed;
 806         u16 link_speed = 0, usb_host = 0;
 807         u8 buf[5] = { 0 };
 808         u8 queue_num = 0;
 809         u16 reg16 = 0;
 810         u8 reg8 = 0;
 811
 812         buf[0] = 0x00;
 813         buf[1] = 0xF8;
 814         buf[2] = 0x07;
 815         switch (aqc111_data->link_speed) {
 816         case AQ_INT_SPEED_5G:
 817                 link_speed = 5000;
 818                 reg8 = 0x05;
 819                 reg16 = 0x001F;
 820                 break;
 821         case AQ_INT_SPEED_2_5G:
 822                 link_speed = 2500;
 823                 reg16 = 0x003F;
 824                 break;
 825         case AQ_INT_SPEED_1G:
 826                 link_speed = 1000;
 827                 reg16 = 0x009F;
 828                 break;
 829         case AQ_INT_SPEED_100M:
 830                 link_speed = 100;
 831                 queue_num = 1;
 832                 reg16 = 0x063F;
 833                 buf[1] = 0xFB;
 834                 buf[2] = 0x4;
 835                 break;
 836         }
 837
 838         aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_INTER_PACKET_GAP_0,
 839                          1, 1, &reg8);
 840
 841         aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_TX_PAUSE_RESEND_T, 3, 3, buf);
 842
 843         switch (usb_speed) {
 844         case USB_SPEED_SUPER:
 845                 usb_host = 3;
 846                 break;
 847         case USB_SPEED_HIGH:
 848                 usb_host = 2;
 849                 break;
 850         case USB_SPEED_FULL:
 851         case USB_SPEED_LOW:
 852                 usb_host = 1;
 853                 queue_num = 0;
 854                 break;
 855         default:
 856                 usb_host = 0;
 857                 break;
 858         }
 859
 860         if (dev->net->mtu > 12500 && dev->net->mtu <= 16334)
 861                 queue_num = 2; /* For Jumbo packet 16KB */
 862
 863         memcpy(buf, &AQC111_BULKIN_SIZE[queue_num], 5);
 864         /* RX bulk configuration */
 865         aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_RX_BULKIN_QCTRL, 5, 5, buf);
 866
 867         /* Set high low water level */
 868         if (dev->net->mtu <= 4500)
 869                 reg16 = 0x0810;
 870         else if (dev->net->mtu <= 9500)
 871                 reg16 = 0x1020;
 872         else if (dev->net->mtu <= 12500)
 873                 reg16 = 0x1420;
 874         else if (dev->net->mtu <= 16334)
 875                 reg16 = 0x1A20;
 876
 877         aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_PAUSE_WATERLVL_LOW,
 878                            2, &reg16);
 879         netdev_info(dev->net, "Link Speed %d, USB %d", link_speed, usb_host);
 880 }
 881
 882 static void aqc111_configure_csum_offload(struct usbnet *dev)
 883 {
 884         u8 reg8 = 0;
 885
 886         if (dev->net->features & NETIF_F_RXCSUM) {
 887                 reg8 |= SFR_RXCOE_IP | SFR_RXCOE_TCP | SFR_RXCOE_UDP |
 888                         SFR_RXCOE_TCPV6 | SFR_RXCOE_UDPV6;
 889         }
 890         aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_RXCOE_CTL, 1, 1, &reg8);
 891
 892         reg8 = 0;
 893         if (dev->net->features & NETIF_F_IP_CSUM)
 894                 reg8 |= SFR_TXCOE_IP | SFR_TXCOE_TCP | SFR_TXCOE_UDP;
 895
 896         if (dev->net->features & NETIF_F_IPV6_CSUM)
 897                 reg8 |= SFR_TXCOE_TCPV6 | SFR_TXCOE_UDPV6;
 898
 899         aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_TXCOE_CTL, 1, 1, &reg8);
 900 }
 901
 902 static int aqc111_link_reset(struct usbnet *dev)
 903 {
 904         struct aqc111_data *aqc111_data = dev->driver_priv;
 905         u16 reg16 = 0;
 906         u8 reg8 = 0;
 907
 908         if (aqc111_data->link == 1) { /* Link up */
 909                 aqc111_configure_rx(dev, aqc111_data);
 910
 911                 /* Vlan Tag Filter */
 912                 reg8 = SFR_VLAN_CONTROL_VSO;
 913                 if (dev->net->features & NETIF_F_HW_VLAN_CTAG_FILTER)
 914                         reg8 |= SFR_VLAN_CONTROL_VFE;
 915
 916                 aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_CONTROL,
 917                                  1, 1, &reg8);
 918
 919                 reg8 = 0x0;
 920                 aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_BMRX_DMA_CONTROL,
 921                                  1, 1, &reg8);
 922
 923                 aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_BMTX_DMA_CONTROL,
 924                                  1, 1, &reg8);
 925
 926                 aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_ARC_CTRL, 1, 1, &reg8);
 927
 928                 reg16 = SFR_RX_CTL_IPE | SFR_RX_CTL_AB;
 929                 aqc111_data->rxctl = reg16;
 930                 aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_RX_CTL, 2, &reg16);
 931
 932                 reg8 = SFR_RX_PATH_READY;
 933                 aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_ETH_MAC_PATH,
 934                                  1, 1, &reg8);
 935
 936                 reg8 = SFR_BULK_OUT_EFF_EN;
 937                 aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_BULK_OUT_CTRL,
 938                                  1, 1, &reg8);
 939
 940                 reg16 = 0;
 941                 aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE,
 942                                    2, &reg16);
 943
 944                 reg16 = SFR_MEDIUM_XGMIIMODE | SFR_MEDIUM_FULL_DUPLEX;
 945                 aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE,
 946                                    2, &reg16);
 947
 948                 aqc111_configure_csum_offload(dev);
 949
 950                 aqc111_set_rx_mode(dev->net);
 951
 952                 aqc111_read16_cmd(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE,
 953                                   2, &reg16);
 954
 955                 if (dev->net->mtu > 1500)
 956                         reg16 |= SFR_MEDIUM_JUMBO_EN;
 957
 958                 reg16 |= SFR_MEDIUM_RECEIVE_EN | SFR_MEDIUM_RXFLOW_CTRLEN |
 959                          SFR_MEDIUM_TXFLOW_CTRLEN;
 960                 aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE,
 961                                    2, &reg16);
 962
 963                 aqc111_data->rxctl |= SFR_RX_CTL_START;
 964                 aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_RX_CTL,
 965                                    2, &aqc111_data->rxctl);
 966
 967                 netif_carrier_on(dev->net);
 968         } else {
 969                 aqc111_read16_cmd(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE,
 970                                   2, &reg16);
 971                 reg16 &= ~SFR_MEDIUM_RECEIVE_EN;
 972                 aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE,
 973                                    2, &reg16);
 974
 975                 aqc111_data->rxctl &= ~SFR_RX_CTL_START;
 976                 aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_RX_CTL,
 977                                    2, &aqc111_data->rxctl);
 978
 979                 reg8 = SFR_BULK_OUT_FLUSH_EN | SFR_BULK_OUT_EFF_EN;
 980                 aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_BULK_OUT_CTRL,
 981                                  1, 1, &reg8);
 982                 reg8 = SFR_BULK_OUT_EFF_EN;
 983                 aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_BULK_OUT_CTRL,
 984                                  1, 1, &reg8);
 985
 986                 netif_carrier_off(dev->net);
 987         }
 988         return 0;
 989 }
 990
 991 static int aqc111_reset(struct usbnet *dev)
 992 {
 993         struct aqc111_data *aqc111_data = dev->driver_priv;
 994         u8 reg8 = 0;
 995
 996         dev->rx_urb_size = URB_SIZE;
 997
 998         if (usb_device_no_sg_constraint(dev->udev))
 999                 dev->can_dma_sg = 1;
1000
1001         dev->net->hw_features |= AQ_SUPPORT_HW_FEATURE;
1002         dev->net->features |= AQ_SUPPORT_FEATURE;
1003         dev->net->vlan_features |= AQ_SUPPORT_VLAN_FEATURE;
1004
1005         /* Power up ethernet PHY */
1006         aqc111_data->phy_cfg = AQ_PHY_POWER_EN;
1007         aqc111_write32_cmd(dev, AQ_PHY_OPS, 0, 0,
1008                            &aqc111_data->phy_cfg);
1009
1010         /* Set the MAC address */
1011         aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_NODE_ID, ETH_ALEN,
1012                          ETH_ALEN, dev->net->dev_addr);
1013
1014         reg8 = 0xFF;
1015         aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_BM_INT_MASK, 1, 1, &reg8);
1016
1017         reg8 = 0x0;
1018         aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_SWP_CTRL, 1, 1, &reg8);
1019
1020         aqc111_read_cmd(dev, AQ_ACCESS_MAC, SFR_MONITOR_MODE, 1, 1, &reg8);
1021         reg8 &= ~(SFR_MONITOR_MODE_EPHYRW | SFR_MONITOR_MODE_RWLC |
1022                   SFR_MONITOR_MODE_RWMP | SFR_MONITOR_MODE_RWWF |
1023                   SFR_MONITOR_MODE_RW_FLAG);
1024         aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_MONITOR_MODE, 1, 1, &reg8);
1025
1026         netif_carrier_off(dev->net);
1027
1028         /* Phy advertise */
1029         aqc111_set_phy_speed(dev, aqc111_data->autoneg,
1030                              aqc111_data->advertised_speed);
1031
1032         return 0;
1033 }
1034
1035 static int aqc111_stop(struct usbnet *dev)
1036 {
1037         struct aqc111_data *aqc111_data = dev->driver_priv;
1038         u16 reg16 = 0;
1039
1040         aqc111_read16_cmd(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE,
1041                           2, &reg16);
1042         reg16 &= ~SFR_MEDIUM_RECEIVE_EN;
1043         aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE,
1044                            2, &reg16);
1045         reg16 = 0;
1046         aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_RX_CTL, 2, &reg16);
1047
1048         /* Put PHY to low power*/
1049         aqc111_data->phy_cfg |= AQ_LOW_POWER;
1050         aqc111_write32_cmd(dev, AQ_PHY_OPS, 0, 0,
1051                            &aqc111_data->phy_cfg);
1052
1053         netif_carrier_off(dev->net);
1054
1055         return 0;
1056 }
1057
1058 static void aqc111_rx_checksum(struct sk_buff *skb, u64 pkt_desc)
1059 {
1060         u32 pkt_type = 0;
1061
1062         skb->ip_summed = CHECKSUM_NONE;
1063         /* checksum error bit is set */
1064         if (pkt_desc & AQ_RX_PD_L4_ERR || pkt_desc & AQ_RX_PD_L3_ERR)
1065                 return;
1066
1067         pkt_type = pkt_desc & AQ_RX_PD_L4_TYPE_MASK;
1068         /* It must be a TCP or UDP packet with a valid checksum */
1069         if (pkt_type == AQ_RX_PD_L4_TCP || pkt_type == AQ_RX_PD_L4_UDP)
1070                 skb->ip_summed = CHECKSUM_UNNECESSARY;
1071 }
1072
1073 static int aqc111_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
1074 {
1075         struct aqc111_data *aqc111_data = dev->driver_priv;
1076         struct sk_buff *new_skb = NULL;
1077         u32 pkt_total_offset = 0;
1078         u64 *pkt_desc_ptr = NULL;
1079         u32 start_of_descs = 0;
1080         u32 desc_offset = 0; /*RX Header Offset*/
1081         u16 pkt_count = 0;
1082         u64 desc_hdr = 0;
1083         u16 vlan_tag = 0;
1084         u32 skb_len = 0;
1085
1086         if (!skb)
1087                 goto err;
1088
1089         if (skb->len == 0)
1090                 goto err;
1091
1092         skb_len = skb->len;
1093         /* RX Descriptor Header */
1094         skb_trim(skb, skb->len - sizeof(desc_hdr));
1095         desc_hdr = le64_to_cpup((u64 *)skb_tail_pointer(skb));
1096
1097         /* Check these packets */
1098         desc_offset = (desc_hdr & AQ_RX_DH_DESC_OFFSET_MASK) >>
1099                       AQ_RX_DH_DESC_OFFSET_SHIFT;
1100         pkt_count = desc_hdr & AQ_RX_DH_PKT_CNT_MASK;
1101         start_of_descs = skb_len - ((pkt_count + 1) *  sizeof(desc_hdr));
1102
1103         /* self check descs position */
1104         if (start_of_descs != desc_offset)
1105                 goto err;
1106
1107         /* self check desc_offset from header*/
1108         if (desc_offset >= skb_len)
1109                 goto err;
1110
1111         if (pkt_count == 0)
1112                 goto err;
1113
1114         /* Get the first RX packet descriptor */
1115         pkt_desc_ptr = (u64 *)(skb->data + desc_offset);
1116
1117         while (pkt_count--) {
1118                 u64 pkt_desc = le64_to_cpup(pkt_desc_ptr);
1119                 u32 pkt_len_with_padd = 0;
1120                 u32 pkt_len = 0;
1121
1122                 pkt_len = (u32)((pkt_desc & AQ_RX_PD_LEN_MASK) >>
1123                           AQ_RX_PD_LEN_SHIFT);
1124                 pkt_len_with_padd = ((pkt_len + 7) & 0x7FFF8);
1125
1126                 pkt_total_offset += pkt_len_with_padd;
1127                 if (pkt_total_offset > desc_offset ||
1128                     (pkt_count == 0 && pkt_total_offset != desc_offset)) {
1129                         goto err;
1130                 }
1131
1132                 if (pkt_desc & AQ_RX_PD_DROP ||
1133                     !(pkt_desc & AQ_RX_PD_RX_OK) ||
1134                     pkt_len > (dev->hard_mtu + AQ_RX_HW_PAD)) {
1135                         skb_pull(skb, pkt_len_with_padd);
1136                         /* Next RX Packet Descriptor */
1137                         pkt_desc_ptr++;
1138                         continue;
1139                 }
1140
1141                 /* Clone SKB */
1142                 new_skb = skb_clone(skb, GFP_ATOMIC);
1143
1144                 if (!new_skb)
1145                         goto err;
1146
1147                 new_skb->len = pkt_len;
1148                 skb_pull(new_skb, AQ_RX_HW_PAD);
1149                 skb_set_tail_pointer(new_skb, new_skb->len);
1150
1151                 new_skb->truesize = SKB_TRUESIZE(new_skb->len);
1152                 if (aqc111_data->rx_checksum)
1153                         aqc111_rx_checksum(new_skb, pkt_desc);
1154
1155                 if (pkt_desc & AQ_RX_PD_VLAN) {
1156                         vlan_tag = pkt_desc >> AQ_RX_PD_VLAN_SHIFT;
1157                         __vlan_hwaccel_put_tag(new_skb, htons(ETH_P_8021Q),
1158                                                vlan_tag & VLAN_VID_MASK);
1159                 }
1160
1161                 usbnet_skb_return(dev, new_skb);
1162                 if (pkt_count == 0)
1163                         break;
1164
1165                 skb_pull(skb, pkt_len_with_padd);
1166
1167                 /* Next RX Packet Header */
1168                 pkt_desc_ptr++;
1169
1170                 new_skb = NULL;
1171         }
1172
1173         return 1;
1174
1175 err:
1176         return 0;
1177 }
1178
1179 static struct sk_buff *aqc111_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
1180                                        gfp_t flags)
1181 {
1182         int frame_size = dev->maxpacket;
1183         struct sk_buff *new_skb = NULL;
1184         u64 *tx_desc_ptr = NULL;
1185         int padding_size = 0;
1186         int headroom = 0;
1187         int tailroom = 0;
1188         u64 tx_desc = 0;
1189         u16 tci = 0;
1190
1191         /*Length of actual data*/
1192         tx_desc |= skb->len & AQ_TX_DESC_LEN_MASK;
1193
1194         /* TSO MSS */
1195         tx_desc |= ((u64)(skb_shinfo(skb)->gso_size & AQ_TX_DESC_MSS_MASK)) <<
1196                    AQ_TX_DESC_MSS_SHIFT;
1197
1198         headroom = (skb->len + sizeof(tx_desc)) % 8;
1199         if (headroom != 0)
1200                 padding_size = 8 - headroom;
1201
1202         if (((skb->len + sizeof(tx_desc) + padding_size) % frame_size) == 0) {
1203                 padding_size += 8;
1204                 tx_desc |= AQ_TX_DESC_DROP_PADD;
1205         }
1206
1207         /* Vlan Tag */
1208         if (vlan_get_tag(skb, &tci) >= 0) {
1209                 tx_desc |= AQ_TX_DESC_VLAN;
1210                 tx_desc |= ((u64)tci & AQ_TX_DESC_VLAN_MASK) <<
1211                            AQ_TX_DESC_VLAN_SHIFT;
1212         }
1213
1214         if (!dev->can_dma_sg && (dev->net->features & NETIF_F_SG) &&
1215             skb_linearize(skb))
1216                 return NULL;
1217
1218         headroom = skb_headroom(skb);
1219         tailroom = skb_tailroom(skb);
1220
1221         if (!(headroom >= sizeof(tx_desc) && tailroom >= padding_size)) {
1222                 new_skb = skb_copy_expand(skb, sizeof(tx_desc),
1223                                           padding_size, flags);
1224                 dev_kfree_skb_any(skb);
1225                 skb = new_skb;
1226                 if (!skb)
1227                         return NULL;
1228         }
1229         if (padding_size != 0)
1230                 skb_put_zero(skb, padding_size);
1231         /* Copy TX header */
1232         tx_desc_ptr = skb_push(skb, sizeof(tx_desc));
1233         *tx_desc_ptr = cpu_to_le64(tx_desc);
1234
1235         usbnet_set_skb_tx_stats(skb, 1, 0);
1236
1237         return skb;
1238 }
1239
1240 static const struct driver_info aqc111_info = {
1241         .description    = "Aquantia AQtion USB to 5GbE Controller",
1242         .bind           = aqc111_bind,
1243         .unbind         = aqc111_unbind,
1244         .status         = aqc111_status,
1245         .link_reset     = aqc111_link_reset,
1246         .reset          = aqc111_reset,
1247         .stop           = aqc111_stop,
1248         .flags          = FLAG_ETHER | FLAG_FRAMING_AX |
1249                           FLAG_AVOID_UNLINK_URBS | FLAG_MULTI_PACKET,
1250         .rx_fixup       = aqc111_rx_fixup,
1251         .tx_fixup       = aqc111_tx_fixup,
1252 };
1253
1254 #define ASIX111_DESC \
1255 "ASIX USB 3.1 Gen1 to 5G Multi-Gigabit Ethernet Adapter"
1256
1257 static const struct driver_info asix111_info = {
1258         .description    = ASIX111_DESC,
1259         .bind           = aqc111_bind,
1260         .unbind         = aqc111_unbind,
1261         .status         = aqc111_status,
1262         .link_reset     = aqc111_link_reset,
1263         .reset          = aqc111_reset,
1264         .stop           = aqc111_stop,
1265         .flags          = FLAG_ETHER | FLAG_FRAMING_AX |
1266                           FLAG_AVOID_UNLINK_URBS | FLAG_MULTI_PACKET,
1267         .rx_fixup       = aqc111_rx_fixup,
1268         .tx_fixup       = aqc111_tx_fixup,
1269 };
1270
1271 #undef ASIX111_DESC
1272
1273 #define ASIX112_DESC \
1274 "ASIX USB 3.1 Gen1 to 2.5G Multi-Gigabit Ethernet Adapter"
1275
1276 static const struct driver_info asix112_info = {
1277         .description    = ASIX112_DESC,
1278         .bind           = aqc111_bind,
1279         .unbind         = aqc111_unbind,
1280         .status         = aqc111_status,
1281         .link_reset     = aqc111_link_reset,
1282         .reset          = aqc111_reset,
1283         .stop           = aqc111_stop,
1284         .flags          = FLAG_ETHER | FLAG_FRAMING_AX |
1285                           FLAG_AVOID_UNLINK_URBS | FLAG_MULTI_PACKET,
1286         .rx_fixup       = aqc111_rx_fixup,
1287         .tx_fixup       = aqc111_tx_fixup,
1288 };
1289
1290 #undef ASIX112_DESC
1291
1292 static const struct driver_info trendnet_info = {
1293         .description    = "USB-C 3.1 to 5GBASE-T Ethernet Adapter",
1294         .bind           = aqc111_bind,
1295         .unbind         = aqc111_unbind,
1296         .status         = aqc111_status,
1297         .link_reset     = aqc111_link_reset,
1298         .reset          = aqc111_reset,
1299         .stop           = aqc111_stop,
1300         .flags          = FLAG_ETHER | FLAG_FRAMING_AX |
1301                           FLAG_AVOID_UNLINK_URBS | FLAG_MULTI_PACKET,
1302         .rx_fixup       = aqc111_rx_fixup,
1303         .tx_fixup       = aqc111_tx_fixup,
1304 };
1305
1306 static const struct driver_info qnap_info = {
1307         .description    = "QNAP QNA-UC5G1T USB to 5GbE Adapter",
1308         .bind           = aqc111_bind,
1309         .unbind         = aqc111_unbind,
1310         .status         = aqc111_status,
1311         .link_reset     = aqc111_link_reset,
1312         .reset          = aqc111_reset,
1313         .stop           = aqc111_stop,
1314         .flags          = FLAG_ETHER | FLAG_FRAMING_AX |
1315                           FLAG_AVOID_UNLINK_URBS | FLAG_MULTI_PACKET,
1316         .rx_fixup       = aqc111_rx_fixup,
1317         .tx_fixup       = aqc111_tx_fixup,
1318 };
1319
1320 static int aqc111_suspend(struct usb_interface *intf, pm_message_t message)
1321 {
1322         struct usbnet *dev = usb_get_intfdata(intf);
1323         struct aqc111_data *aqc111_data = dev->driver_priv;
1324         u16 temp_rx_ctrl = 0x00;
1325         u16 reg16;
1326         u8 reg8;
1327
1328         usbnet_suspend(intf, message);
1329
1330         aqc111_read16_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_RX_CTL, 2, &reg16);
1331         temp_rx_ctrl = reg16;
1332         /* Stop RX operations*/
1333         reg16 &= ~SFR_RX_CTL_START;
1334         aqc111_write16_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_RX_CTL, 2, &reg16);
1335         /* Force bz */
1336         aqc111_read16_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_PHYPWR_RSTCTL,
1337                                2, &reg16);
1338         reg16 |= SFR_PHYPWR_RSTCTL_BZ;
1339         aqc111_write16_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_PHYPWR_RSTCTL,
1340                                 2, &reg16);
1341
1342         reg8 = SFR_BULK_OUT_EFF_EN;
1343         aqc111_write_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_BULK_OUT_CTRL,
1344                               1, 1, &reg8);
1345
1346         temp_rx_ctrl &= ~(SFR_RX_CTL_START | SFR_RX_CTL_RF_WAK |
1347                           SFR_RX_CTL_AP | SFR_RX_CTL_AM);
1348         aqc111_write16_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_RX_CTL,
1349                                 2, &temp_rx_ctrl);
1350
1351         reg8 = 0x00;
1352         aqc111_write_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_ETH_MAC_PATH,
1353                               1, 1, &reg8);
1354
1355         if (aqc111_data->wol_flags) {
1356                 struct aqc111_wol_cfg wol_cfg;
1357
1358                 memset(&wol_cfg, 0, sizeof(struct aqc111_wol_cfg));
1359
1360                 aqc111_data->phy_cfg |= AQ_WOL;
1361                 ether_addr_copy(wol_cfg.hw_addr, dev->net->dev_addr);
1362                 wol_cfg.flags = aqc111_data->wol_flags;
1363
1364                 temp_rx_ctrl |= (SFR_RX_CTL_AB | SFR_RX_CTL_START);
1365                 aqc111_write16_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_RX_CTL,
1366                                         2, &temp_rx_ctrl);
1367                 reg8 = 0x00;
1368                 aqc111_write_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_BM_INT_MASK,
1369                                       1, 1, &reg8);
1370                 reg8 = SFR_BMRX_DMA_EN;
1371                 aqc111_write_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_BMRX_DMA_CONTROL,
1372                                       1, 1, &reg8);
1373                 reg8 = SFR_RX_PATH_READY;
1374                 aqc111_write_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_ETH_MAC_PATH,
1375                                       1, 1, &reg8);
1376                 reg8 = 0x07;
1377                 aqc111_write_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_RX_BULKIN_QCTRL,
1378                                       1, 1, &reg8);
1379                 reg8 = 0x00;
1380                 aqc111_write_cmd_nopm(dev, AQ_ACCESS_MAC,
1381                                       SFR_RX_BULKIN_QTIMR_LOW, 1, 1, &reg8);
1382                 aqc111_write_cmd_nopm(dev, AQ_ACCESS_MAC,
1383                                       SFR_RX_BULKIN_QTIMR_HIGH, 1, 1, &reg8);
1384                 reg8 = 0xFF;
1385                 aqc111_write_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_RX_BULKIN_QSIZE,
1386                                       1, 1, &reg8);
1387                 aqc111_write_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_RX_BULKIN_QIFG,
1388                                       1, 1, &reg8);
1389
1390                 aqc111_read16_cmd_nopm(dev, AQ_ACCESS_MAC,
1391                                        SFR_MEDIUM_STATUS_MODE, 2, &reg16);
1392                 reg16 |= SFR_MEDIUM_RECEIVE_EN;
1393                 aqc111_write16_cmd_nopm(dev, AQ_ACCESS_MAC,
1394                                         SFR_MEDIUM_STATUS_MODE, 2, &reg16);
1395
1396                 aqc111_write_cmd(dev, AQ_WOL_CFG, 0, 0,
1397                                  WOL_CFG_SIZE, &wol_cfg);
1398                 aqc111_write32_cmd(dev, AQ_PHY_OPS, 0, 0,
1399                                    &aqc111_data->phy_cfg);
1400         } else {
1401                 aqc111_data->phy_cfg |= AQ_LOW_POWER;
1402                 aqc111_write32_cmd(dev, AQ_PHY_OPS, 0, 0,
1403                                    &aqc111_data->phy_cfg);
1404
1405                 /* Disable RX path */
1406                 aqc111_read16_cmd_nopm(dev, AQ_ACCESS_MAC,
1407                                        SFR_MEDIUM_STATUS_MODE, 2, &reg16);
1408                 reg16 &= ~SFR_MEDIUM_RECEIVE_EN;
1409                 aqc111_write16_cmd_nopm(dev, AQ_ACCESS_MAC,
1410                                         SFR_MEDIUM_STATUS_MODE, 2, &reg16);
1411         }
1412
1413         return 0;
1414 }
1415
1416 static int aqc111_resume(struct usb_interface *intf)
1417 {
1418         struct usbnet *dev = usb_get_intfdata(intf);
1419         struct aqc111_data *aqc111_data = dev->driver_priv;
1420         u16 reg16;
1421         u8 reg8;
1422
1423         netif_carrier_off(dev->net);
1424
1425         /* Power up ethernet PHY */
1426         aqc111_data->phy_cfg |= AQ_PHY_POWER_EN;
1427         aqc111_data->phy_cfg &= ~AQ_LOW_POWER;
1428         aqc111_data->phy_cfg &= ~AQ_WOL;
1429
1430         reg8 = 0xFF;
1431         aqc111_write_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_BM_INT_MASK,
1432                               1, 1, &reg8);
1433         /* Configure RX control register => start operation */
1434         reg16 = aqc111_data->rxctl;
1435         reg16 &= ~SFR_RX_CTL_START;
1436         aqc111_write16_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_RX_CTL, 2, &reg16);
1437
1438         reg16 |= SFR_RX_CTL_START;
1439         aqc111_write16_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_RX_CTL, 2, &reg16);
1440
1441         aqc111_set_phy_speed(dev, aqc111_data->autoneg,
1442                              aqc111_data->advertised_speed);
1443
1444         aqc111_read16_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE,
1445                                2, &reg16);
1446         reg16 |= SFR_MEDIUM_RECEIVE_EN;
1447         aqc111_write16_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE,
1448                                 2, &reg16);
1449         reg8 = SFR_RX_PATH_READY;
1450         aqc111_write_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_ETH_MAC_PATH,
1451                               1, 1, &reg8);
1452         reg8 = 0x0;
1453         aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_BMRX_DMA_CONTROL, 1, 1, &reg8);
1454
1455         return usbnet_resume(intf);
1456 }
1457
1458 #define AQC111_USB_ETH_DEV(vid, pid, table) \
1459         USB_DEVICE_INTERFACE_CLASS((vid), (pid), USB_CLASS_VENDOR_SPEC), \
1460         .driver_info = (unsigned long)&(table) \
1461 }, \
1462 { \
1463         USB_DEVICE_AND_INTERFACE_INFO((vid), (pid), \
1464                                       USB_CLASS_COMM, \
1465                                       USB_CDC_SUBCLASS_ETHERNET, \
1466                                       USB_CDC_PROTO_NONE), \
1467         .driver_info = (unsigned long)&(table),
1468
1469 static const struct usb_device_id products[] = {
1470         {AQC111_USB_ETH_DEV(0x2eca, 0xc101, aqc111_info)},
1471         {AQC111_USB_ETH_DEV(0x0b95, 0x2790, asix111_info)},
1472         {AQC111_USB_ETH_DEV(0x0b95, 0x2791, asix112_info)},
1473         {AQC111_USB_ETH_DEV(0x20f4, 0xe05a, trendnet_info)},
1474         {AQC111_USB_ETH_DEV(0x1c04, 0x0015, qnap_info)},
1475         { },/* END */
1476 };
1477 MODULE_DEVICE_TABLE(usb, products);
1478
1479 static struct usb_driver aq_driver = {
1480         .name           = "aqc111",
1481         .id_table       = products,
1482         .probe          = usbnet_probe,
1483         .suspend        = aqc111_suspend,
1484         .resume         = aqc111_resume,
1485         .disconnect     = usbnet_disconnect,
1486 };
1487
1488 module_usb_driver(aq_driver);
1489
1490 MODULE_DESCRIPTION("Aquantia AQtion USB to 5/2.5GbE Controllers");
1491 MODULE_LICENSE("GPL");