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 <[email protected]>
   4  * Copyright (C) 2005 Phil Chang <[email protected]>
   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, const 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                         fallthrough;
 337                 case SPEED_2500:
 338                         aqc111_data->phy_cfg |= AQ_ADV_2G5;
 339                         fallthrough;
 340                 case SPEED_1000:
 341                         aqc111_data->phy_cfg |= AQ_ADV_1G;
 342                         fallthrough;
 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) {
 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
 455                 reg16 = 0x1A20;
 456
 457         aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_PAUSE_WATERLVL_LOW,
 458                            2, &reg16);
 459
 460         return 0;
 461 }
 462
 463 static int aqc111_set_mac_addr(struct net_device *net, void *p)
 464 {
 465         struct usbnet *dev = netdev_priv(net);
 466         int ret = 0;
 467
 468         ret = eth_mac_addr(net, p);
 469         if (ret < 0)
 470                 return ret;
 471
 472         /* Set the MAC address */
 473         return aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_NODE_ID, ETH_ALEN,
 474                                 ETH_ALEN, net->dev_addr);
 475 }
 476
 477 static int aqc111_vlan_rx_kill_vid(struct net_device *net,
 478                                    __be16 proto, u16 vid)
 479 {
 480         struct usbnet *dev = netdev_priv(net);
 481         u8 vlan_ctrl = 0;
 482         u16 reg16 = 0;
 483         u8 reg8 = 0;
 484
 485         aqc111_read_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_CONTROL, 1, 1, &reg8);
 486         vlan_ctrl = reg8;
 487
 488         /* Address */
 489         reg8 = (vid / 16);
 490         aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_ADDRESS, 1, 1, &reg8);
 491         /* Data */
 492         reg8 = vlan_ctrl | SFR_VLAN_CONTROL_RD;
 493         aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_CONTROL, 1, 1, &reg8);
 494         aqc111_read16_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_DATA0, 2, &reg16);
 495         reg16 &= ~(1 << (vid % 16));
 496         aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_DATA0, 2, &reg16);
 497         reg8 = vlan_ctrl | SFR_VLAN_CONTROL_WE;
 498         aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_CONTROL, 1, 1, &reg8);
 499
 500         return 0;
 501 }
 502
 503 static int aqc111_vlan_rx_add_vid(struct net_device *net, __be16 proto, u16 vid)
 504 {
 505         struct usbnet *dev = netdev_priv(net);
 506         u8 vlan_ctrl = 0;
 507         u16 reg16 = 0;
 508         u8 reg8 = 0;
 509
 510         aqc111_read_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_CONTROL, 1, 1, &reg8);
 511         vlan_ctrl = reg8;
 512
 513         /* Address */
 514         reg8 = (vid / 16);
 515         aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_ADDRESS, 1, 1, &reg8);
 516         /* Data */
 517         reg8 = vlan_ctrl | SFR_VLAN_CONTROL_RD;
 518         aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_CONTROL, 1, 1, &reg8);
 519         aqc111_read16_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_DATA0, 2, &reg16);
 520         reg16 |= (1 << (vid % 16));
 521         aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_DATA0, 2, &reg16);
 522         reg8 = vlan_ctrl | SFR_VLAN_CONTROL_WE;
 523         aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_CONTROL, 1, 1, &reg8);
 524
 525         return 0;
 526 }
 527
 528 static void aqc111_set_rx_mode(struct net_device *net)
 529 {
 530         struct usbnet *dev = netdev_priv(net);
 531         struct aqc111_data *aqc111_data = dev->driver_priv;
 532         int mc_count = 0;
 533
 534         mc_count = netdev_mc_count(net);
 535
 536         aqc111_data->rxctl &= ~(SFR_RX_CTL_PRO | SFR_RX_CTL_AMALL |
 537                                 SFR_RX_CTL_AM);
 538
 539         if (net->flags & IFF_PROMISC) {
 540                 aqc111_data->rxctl |= SFR_RX_CTL_PRO;
 541         } else if ((net->flags & IFF_ALLMULTI) || mc_count > AQ_MAX_MCAST) {
 542                 aqc111_data->rxctl |= SFR_RX_CTL_AMALL;
 543         } else if (!netdev_mc_empty(net)) {
 544                 u8 m_filter[AQ_MCAST_FILTER_SIZE] = { 0 };
 545                 struct netdev_hw_addr *ha = NULL;
 546                 u32 crc_bits = 0;
 547
 548                 netdev_for_each_mc_addr(ha, net) {
 549                         crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26;
 550                         m_filter[crc_bits >> 3] |= BIT(crc_bits & 7);
 551                 }
 552
 553                 aqc111_write_cmd_async(dev, AQ_ACCESS_MAC,
 554                                        SFR_MULTI_FILTER_ARRY,
 555                                        AQ_MCAST_FILTER_SIZE,
 556                                        AQ_MCAST_FILTER_SIZE, m_filter);
 557
 558                 aqc111_data->rxctl |= SFR_RX_CTL_AM;
 559         }
 560
 561         aqc111_write16_cmd_async(dev, AQ_ACCESS_MAC, SFR_RX_CTL,
 562                                  2, &aqc111_data->rxctl);
 563 }
 564
 565 static int aqc111_set_features(struct net_device *net,
 566                                netdev_features_t features)
 567 {
 568         struct usbnet *dev = netdev_priv(net);
 569         struct aqc111_data *aqc111_data = dev->driver_priv;
 570         netdev_features_t changed = net->features ^ features;
 571         u16 reg16 = 0;
 572         u8 reg8 = 0;
 573
 574         if (changed & NETIF_F_IP_CSUM) {
 575                 aqc111_read_cmd(dev, AQ_ACCESS_MAC, SFR_TXCOE_CTL, 1, 1, &reg8);
 576                 reg8 ^= SFR_TXCOE_TCP | SFR_TXCOE_UDP;
 577                 aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_TXCOE_CTL,
 578                                  1, 1, &reg8);
 579         }
 580
 581         if (changed & NETIF_F_IPV6_CSUM) {
 582                 aqc111_read_cmd(dev, AQ_ACCESS_MAC, SFR_TXCOE_CTL, 1, 1, &reg8);
 583                 reg8 ^= SFR_TXCOE_TCPV6 | SFR_TXCOE_UDPV6;
 584                 aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_TXCOE_CTL,
 585                                  1, 1, &reg8);
 586         }
 587
 588         if (changed & NETIF_F_RXCSUM) {
 589                 aqc111_read_cmd(dev, AQ_ACCESS_MAC, SFR_RXCOE_CTL, 1, 1, &reg8);
 590                 if (features & NETIF_F_RXCSUM) {
 591                         aqc111_data->rx_checksum = 1;
 592                         reg8 &= ~(SFR_RXCOE_IP | SFR_RXCOE_TCP | SFR_RXCOE_UDP |
 593                                   SFR_RXCOE_TCPV6 | SFR_RXCOE_UDPV6);
 594                 } else {
 595                         aqc111_data->rx_checksum = 0;
 596                         reg8 |= SFR_RXCOE_IP | SFR_RXCOE_TCP | SFR_RXCOE_UDP |
 597                                 SFR_RXCOE_TCPV6 | SFR_RXCOE_UDPV6;
 598                 }
 599
 600                 aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_RXCOE_CTL,
 601                                  1, 1, &reg8);
 602         }
 603         if (changed & NETIF_F_HW_VLAN_CTAG_FILTER) {
 604                 if (features & NETIF_F_HW_VLAN_CTAG_FILTER) {
 605                         u16 i = 0;
 606
 607                         for (i = 0; i < 256; i++) {
 608                                 /* Address */
 609                                 reg8 = i;
 610                                 aqc111_write_cmd(dev, AQ_ACCESS_MAC,
 611                                                  SFR_VLAN_ID_ADDRESS,
 612                                                  1, 1, &reg8);
 613                                 /* Data */
 614                                 aqc111_write16_cmd(dev, AQ_ACCESS_MAC,
 615                                                    SFR_VLAN_ID_DATA0,
 616                                                    2, &reg16);
 617                                 reg8 = SFR_VLAN_CONTROL_WE;
 618                                 aqc111_write_cmd(dev, AQ_ACCESS_MAC,
 619                                                  SFR_VLAN_ID_CONTROL,
 620                                                  1, 1, &reg8);
 621                         }
 622                         aqc111_read_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_CONTROL,
 623                                         1, 1, &reg8);
 624                         reg8 |= SFR_VLAN_CONTROL_VFE;
 625                         aqc111_write_cmd(dev, AQ_ACCESS_MAC,
 626                                          SFR_VLAN_ID_CONTROL, 1, 1, &reg8);
 627                 } else {
 628                         aqc111_read_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_CONTROL,
 629                                         1, 1, &reg8);
 630                         reg8 &= ~SFR_VLAN_CONTROL_VFE;
 631                         aqc111_write_cmd(dev, AQ_ACCESS_MAC,
 632                                          SFR_VLAN_ID_CONTROL, 1, 1, &reg8);
 633                 }
 634         }
 635
 636         return 0;
 637 }
 638
 639 static const struct net_device_ops aqc111_netdev_ops = {
 640         .ndo_open               = usbnet_open,
 641         .ndo_stop               = usbnet_stop,
 642         .ndo_start_xmit         = usbnet_start_xmit,
 643         .ndo_tx_timeout         = usbnet_tx_timeout,
 644         .ndo_get_stats64        = dev_get_tstats64,
 645         .ndo_change_mtu         = aqc111_change_mtu,
 646         .ndo_set_mac_address    = aqc111_set_mac_addr,
 647         .ndo_validate_addr      = eth_validate_addr,
 648         .ndo_vlan_rx_add_vid    = aqc111_vlan_rx_add_vid,
 649         .ndo_vlan_rx_kill_vid   = aqc111_vlan_rx_kill_vid,
 650         .ndo_set_rx_mode        = aqc111_set_rx_mode,
 651         .ndo_set_features       = aqc111_set_features,
 652 };
 653
 654 static int aqc111_read_perm_mac(struct usbnet *dev)
 655 {
 656         u8 buf[ETH_ALEN];
 657         int ret;
 658
 659         ret = aqc111_read_cmd(dev, AQ_FLASH_PARAMETERS, 0, 0, ETH_ALEN, buf);
 660         if (ret < 0)
 661                 goto out;
 662
 663         ether_addr_copy(dev->net->perm_addr, buf);
 664
 665         return 0;
 666 out:
 667         return ret;
 668 }
 669
 670 static void aqc111_read_fw_version(struct usbnet *dev,
 671                                    struct aqc111_data *aqc111_data)
 672 {
 673         aqc111_read_cmd(dev, AQ_ACCESS_MAC, AQ_FW_VER_MAJOR,
 674                         1, 1, &aqc111_data->fw_ver.major);
 675         aqc111_read_cmd(dev, AQ_ACCESS_MAC, AQ_FW_VER_MINOR,
 676                         1, 1, &aqc111_data->fw_ver.minor);
 677         aqc111_read_cmd(dev, AQ_ACCESS_MAC, AQ_FW_VER_REV,
 678                         1, 1, &aqc111_data->fw_ver.rev);
 679
 680         if (aqc111_data->fw_ver.major & 0x80)
 681                 aqc111_data->fw_ver.major &= ~0x80;
 682 }
 683
 684 static int aqc111_bind(struct usbnet *dev, struct usb_interface *intf)
 685 {
 686         struct usb_device *udev = interface_to_usbdev(intf);
 687         enum usb_device_speed usb_speed = udev->speed;
 688         struct aqc111_data *aqc111_data;
 689         int ret;
 690
 691         /* Check if vendor configuration */
 692         if (udev->actconfig->desc.bConfigurationValue != 1) {
 693                 usb_driver_set_configuration(udev, 1);
 694                 return -ENODEV;
 695         }
 696
 697         usb_reset_configuration(dev->udev);
 698
 699         ret = usbnet_get_endpoints(dev, intf);
 700         if (ret < 0) {
 701                 netdev_dbg(dev->net, "usbnet_get_endpoints failed");
 702                 return ret;
 703         }
 704
 705         aqc111_data = kzalloc(sizeof(*aqc111_data), GFP_KERNEL);
 706         if (!aqc111_data)
 707                 return -ENOMEM;
 708
 709         /* store aqc111_data pointer in device data field */
 710         dev->driver_priv = aqc111_data;
 711
 712         /* Init the MAC address */
 713         ret = aqc111_read_perm_mac(dev);
 714         if (ret)
 715                 goto out;
 716
 717         eth_hw_addr_set(dev->net, dev->net->perm_addr);
 718
 719         /* Set Rx urb size */
 720         dev->rx_urb_size = URB_SIZE;
 721
 722         /* Set TX needed headroom & tailroom */
 723         dev->net->needed_headroom += sizeof(u64);
 724         dev->net->needed_tailroom += sizeof(u64);
 725
 726         dev->net->max_mtu = 16334;
 727
 728         dev->net->netdev_ops = &aqc111_netdev_ops;
 729         dev->net->ethtool_ops = &aqc111_ethtool_ops;
 730
 731         if (usb_device_no_sg_constraint(dev->udev))
 732                 dev->can_dma_sg = 1;
 733
 734         dev->net->hw_features |= AQ_SUPPORT_HW_FEATURE;
 735         dev->net->features |= AQ_SUPPORT_FEATURE;
 736         dev->net->vlan_features |= AQ_SUPPORT_VLAN_FEATURE;
 737
 738         netif_set_gso_max_size(dev->net, 65535);
 739
 740         aqc111_read_fw_version(dev, aqc111_data);
 741         aqc111_data->autoneg = AUTONEG_ENABLE;
 742         aqc111_data->advertised_speed = (usb_speed == USB_SPEED_SUPER) ?
 743                                          SPEED_5000 : SPEED_1000;
 744
 745         return 0;
 746
 747 out:
 748         kfree(aqc111_data);
 749         return ret;
 750 }
 751
 752 static void aqc111_unbind(struct usbnet *dev, struct usb_interface *intf)
 753 {
 754         struct aqc111_data *aqc111_data = dev->driver_priv;
 755         u16 reg16;
 756
 757         /* Force bz */
 758         reg16 = SFR_PHYPWR_RSTCTL_BZ;
 759         aqc111_write16_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_PHYPWR_RSTCTL,
 760                                 2, &reg16);
 761         reg16 = 0;
 762         aqc111_write16_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_PHYPWR_RSTCTL,
 763                                 2, &reg16);
 764
 765         /* Power down ethernet PHY */
 766         aqc111_data->phy_cfg &= ~AQ_ADV_MASK;
 767         aqc111_data->phy_cfg |= AQ_LOW_POWER;
 768         aqc111_data->phy_cfg &= ~AQ_PHY_POWER_EN;
 769         aqc111_write32_cmd_nopm(dev, AQ_PHY_OPS, 0, 0,
 770                                 &aqc111_data->phy_cfg);
 771
 772         kfree(aqc111_data);
 773 }
 774
 775 static void aqc111_status(struct usbnet *dev, struct urb *urb)
 776 {
 777         struct aqc111_data *aqc111_data = dev->driver_priv;
 778         u64 *event_data = NULL;
 779         int link = 0;
 780
 781         if (urb->actual_length < sizeof(*event_data))
 782                 return;
 783
 784         event_data = urb->transfer_buffer;
 785         le64_to_cpus(event_data);
 786
 787         if (*event_data & AQ_LS_MASK)
 788                 link = 1;
 789         else
 790                 link = 0;
 791
 792         aqc111_data->link_speed = (*event_data & AQ_SPEED_MASK) >>
 793                                   AQ_SPEED_SHIFT;
 794         aqc111_data->link = link;
 795
 796         if (netif_carrier_ok(dev->net) != link)
 797                 usbnet_defer_kevent(dev, EVENT_LINK_RESET);
 798 }
 799
 800 static void aqc111_configure_rx(struct usbnet *dev,
 801                                 struct aqc111_data *aqc111_data)
 802 {
 803         enum usb_device_speed usb_speed = dev->udev->speed;
 804         u16 link_speed = 0, usb_host = 0;
 805         u8 buf[5] = { 0 };
 806         u8 queue_num = 0;
 807         u16 reg16 = 0;
 808         u8 reg8 = 0;
 809
 810         buf[0] = 0x00;
 811         buf[1] = 0xF8;
 812         buf[2] = 0x07;
 813         switch (aqc111_data->link_speed) {
 814         case AQ_INT_SPEED_5G:
 815                 link_speed = 5000;
 816                 reg8 = 0x05;
 817                 reg16 = 0x001F;
 818                 break;
 819         case AQ_INT_SPEED_2_5G:
 820                 link_speed = 2500;
 821                 reg16 = 0x003F;
 822                 break;
 823         case AQ_INT_SPEED_1G:
 824                 link_speed = 1000;
 825                 reg16 = 0x009F;
 826                 break;
 827         case AQ_INT_SPEED_100M:
 828                 link_speed = 100;
 829                 queue_num = 1;
 830                 reg16 = 0x063F;
 831                 buf[1] = 0xFB;
 832                 buf[2] = 0x4;
 833                 break;
 834         }
 835
 836         aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_INTER_PACKET_GAP_0,
 837                          1, 1, &reg8);
 838
 839         aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_TX_PAUSE_RESEND_T, 3, 3, buf);
 840
 841         switch (usb_speed) {
 842         case USB_SPEED_SUPER:
 843                 usb_host = 3;
 844                 break;
 845         case USB_SPEED_HIGH:
 846                 usb_host = 2;
 847                 break;
 848         case USB_SPEED_FULL:
 849         case USB_SPEED_LOW:
 850                 usb_host = 1;
 851                 queue_num = 0;
 852                 break;
 853         default:
 854                 usb_host = 0;
 855                 break;
 856         }
 857
 858         if (dev->net->mtu > 12500 && dev->net->mtu <= 16334)
 859                 queue_num = 2; /* For Jumbo packet 16KB */
 860
 861         memcpy(buf, &AQC111_BULKIN_SIZE[queue_num], 5);
 862         /* RX bulk configuration */
 863         aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_RX_BULKIN_QCTRL, 5, 5, buf);
 864
 865         /* Set high low water level */
 866         if (dev->net->mtu <= 4500)
 867                 reg16 = 0x0810;
 868         else if (dev->net->mtu <= 9500)
 869                 reg16 = 0x1020;
 870         else if (dev->net->mtu <= 12500)
 871                 reg16 = 0x1420;
 872         else if (dev->net->mtu <= 16334)
 873                 reg16 = 0x1A20;
 874
 875         aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_PAUSE_WATERLVL_LOW,
 876                            2, &reg16);
 877         netdev_info(dev->net, "Link Speed %d, USB %d", link_speed, usb_host);
 878 }
 879
 880 static void aqc111_configure_csum_offload(struct usbnet *dev)
 881 {
 882         u8 reg8 = 0;
 883
 884         if (dev->net->features & NETIF_F_RXCSUM) {
 885                 reg8 |= SFR_RXCOE_IP | SFR_RXCOE_TCP | SFR_RXCOE_UDP |
 886                         SFR_RXCOE_TCPV6 | SFR_RXCOE_UDPV6;
 887         }
 888         aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_RXCOE_CTL, 1, 1, &reg8);
 889
 890         reg8 = 0;
 891         if (dev->net->features & NETIF_F_IP_CSUM)
 892                 reg8 |= SFR_TXCOE_IP | SFR_TXCOE_TCP | SFR_TXCOE_UDP;
 893
 894         if (dev->net->features & NETIF_F_IPV6_CSUM)
 895                 reg8 |= SFR_TXCOE_TCPV6 | SFR_TXCOE_UDPV6;
 896
 897         aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_TXCOE_CTL, 1, 1, &reg8);
 898 }
 899
 900 static int aqc111_link_reset(struct usbnet *dev)
 901 {
 902         struct aqc111_data *aqc111_data = dev->driver_priv;
 903         u16 reg16 = 0;
 904         u8 reg8 = 0;
 905
 906         if (aqc111_data->link == 1) { /* Link up */
 907                 aqc111_configure_rx(dev, aqc111_data);
 908
 909                 /* Vlan Tag Filter */
 910                 reg8 = SFR_VLAN_CONTROL_VSO;
 911                 if (dev->net->features & NETIF_F_HW_VLAN_CTAG_FILTER)
 912                         reg8 |= SFR_VLAN_CONTROL_VFE;
 913
 914                 aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_VLAN_ID_CONTROL,
 915                                  1, 1, &reg8);
 916
 917                 reg8 = 0x0;
 918                 aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_BMRX_DMA_CONTROL,
 919                                  1, 1, &reg8);
 920
 921                 aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_BMTX_DMA_CONTROL,
 922                                  1, 1, &reg8);
 923
 924                 aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_ARC_CTRL, 1, 1, &reg8);
 925
 926                 reg16 = SFR_RX_CTL_IPE | SFR_RX_CTL_AB;
 927                 aqc111_data->rxctl = reg16;
 928                 aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_RX_CTL, 2, &reg16);
 929
 930                 reg8 = SFR_RX_PATH_READY;
 931                 aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_ETH_MAC_PATH,
 932                                  1, 1, &reg8);
 933
 934                 reg8 = SFR_BULK_OUT_EFF_EN;
 935                 aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_BULK_OUT_CTRL,
 936                                  1, 1, &reg8);
 937
 938                 reg16 = 0;
 939                 aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE,
 940                                    2, &reg16);
 941
 942                 reg16 = SFR_MEDIUM_XGMIIMODE | SFR_MEDIUM_FULL_DUPLEX;
 943                 aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE,
 944                                    2, &reg16);
 945
 946                 aqc111_configure_csum_offload(dev);
 947
 948                 aqc111_set_rx_mode(dev->net);
 949
 950                 aqc111_read16_cmd(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE,
 951                                   2, &reg16);
 952
 953                 if (dev->net->mtu > 1500)
 954                         reg16 |= SFR_MEDIUM_JUMBO_EN;
 955
 956                 reg16 |= SFR_MEDIUM_RECEIVE_EN | SFR_MEDIUM_RXFLOW_CTRLEN |
 957                          SFR_MEDIUM_TXFLOW_CTRLEN;
 958                 aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE,
 959                                    2, &reg16);
 960
 961                 aqc111_data->rxctl |= SFR_RX_CTL_START;
 962                 aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_RX_CTL,
 963                                    2, &aqc111_data->rxctl);
 964
 965                 netif_carrier_on(dev->net);
 966         } else {
 967                 aqc111_read16_cmd(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE,
 968                                   2, &reg16);
 969                 reg16 &= ~SFR_MEDIUM_RECEIVE_EN;
 970                 aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE,
 971                                    2, &reg16);
 972
 973                 aqc111_data->rxctl &= ~SFR_RX_CTL_START;
 974                 aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_RX_CTL,
 975                                    2, &aqc111_data->rxctl);
 976
 977                 reg8 = SFR_BULK_OUT_FLUSH_EN | SFR_BULK_OUT_EFF_EN;
 978                 aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_BULK_OUT_CTRL,
 979                                  1, 1, &reg8);
 980                 reg8 = SFR_BULK_OUT_EFF_EN;
 981                 aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_BULK_OUT_CTRL,
 982                                  1, 1, &reg8);
 983
 984                 netif_carrier_off(dev->net);
 985         }
 986         return 0;
 987 }
 988
 989 static int aqc111_reset(struct usbnet *dev)
 990 {
 991         struct aqc111_data *aqc111_data = dev->driver_priv;
 992         u8 reg8 = 0;
 993
 994         dev->rx_urb_size = URB_SIZE;
 995
 996         if (usb_device_no_sg_constraint(dev->udev))
 997                 dev->can_dma_sg = 1;
 998
 999         dev->net->hw_features |= AQ_SUPPORT_HW_FEATURE;
1000         dev->net->features |= AQ_SUPPORT_FEATURE;
1001         dev->net->vlan_features |= AQ_SUPPORT_VLAN_FEATURE;
1002
1003         /* Power up ethernet PHY */
1004         aqc111_data->phy_cfg = AQ_PHY_POWER_EN;
1005         aqc111_write32_cmd(dev, AQ_PHY_OPS, 0, 0,
1006                            &aqc111_data->phy_cfg);
1007
1008         /* Set the MAC address */
1009         aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_NODE_ID, ETH_ALEN,
1010                          ETH_ALEN, dev->net->dev_addr);
1011
1012         reg8 = 0xFF;
1013         aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_BM_INT_MASK, 1, 1, &reg8);
1014
1015         reg8 = 0x0;
1016         aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_SWP_CTRL, 1, 1, &reg8);
1017
1018         aqc111_read_cmd(dev, AQ_ACCESS_MAC, SFR_MONITOR_MODE, 1, 1, &reg8);
1019         reg8 &= ~(SFR_MONITOR_MODE_EPHYRW | SFR_MONITOR_MODE_RWLC |
1020                   SFR_MONITOR_MODE_RWMP | SFR_MONITOR_MODE_RWWF |
1021                   SFR_MONITOR_MODE_RW_FLAG);
1022         aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_MONITOR_MODE, 1, 1, &reg8);
1023
1024         netif_carrier_off(dev->net);
1025
1026         /* Phy advertise */
1027         aqc111_set_phy_speed(dev, aqc111_data->autoneg,
1028                              aqc111_data->advertised_speed);
1029
1030         return 0;
1031 }
1032
1033 static int aqc111_stop(struct usbnet *dev)
1034 {
1035         struct aqc111_data *aqc111_data = dev->driver_priv;
1036         u16 reg16 = 0;
1037
1038         aqc111_read16_cmd(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE,
1039                           2, &reg16);
1040         reg16 &= ~SFR_MEDIUM_RECEIVE_EN;
1041         aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE,
1042                            2, &reg16);
1043         reg16 = 0;
1044         aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_RX_CTL, 2, &reg16);
1045
1046         /* Put PHY to low power*/
1047         aqc111_data->phy_cfg |= AQ_LOW_POWER;
1048         aqc111_write32_cmd(dev, AQ_PHY_OPS, 0, 0,
1049                            &aqc111_data->phy_cfg);
1050
1051         netif_carrier_off(dev->net);
1052
1053         return 0;
1054 }
1055
1056 static void aqc111_rx_checksum(struct sk_buff *skb, u64 pkt_desc)
1057 {
1058         u32 pkt_type = 0;
1059
1060         skb->ip_summed = CHECKSUM_NONE;
1061         /* checksum error bit is set */
1062         if (pkt_desc & AQ_RX_PD_L4_ERR || pkt_desc & AQ_RX_PD_L3_ERR)
1063                 return;
1064
1065         pkt_type = pkt_desc & AQ_RX_PD_L4_TYPE_MASK;
1066         /* It must be a TCP or UDP packet with a valid checksum */
1067         if (pkt_type == AQ_RX_PD_L4_TCP || pkt_type == AQ_RX_PD_L4_UDP)
1068                 skb->ip_summed = CHECKSUM_UNNECESSARY;
1069 }
1070
1071 static int aqc111_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
1072 {
1073         struct aqc111_data *aqc111_data = dev->driver_priv;
1074         struct sk_buff *new_skb = NULL;
1075         u32 pkt_total_offset = 0;
1076         u64 *pkt_desc_ptr = NULL;
1077         u32 start_of_descs = 0;
1078         u32 desc_offset = 0; /*RX Header Offset*/
1079         u16 pkt_count = 0;
1080         u64 desc_hdr = 0;
1081         u16 vlan_tag = 0;
1082         u32 skb_len = 0;
1083
1084         if (!skb)
1085                 goto err;
1086
1087         if (skb->len == 0)
1088                 goto err;
1089
1090         skb_len = skb->len;
1091         /* RX Descriptor Header */
1092         skb_trim(skb, skb->len - sizeof(desc_hdr));
1093         desc_hdr = le64_to_cpup((u64 *)skb_tail_pointer(skb));
1094
1095         /* Check these packets */
1096         desc_offset = (desc_hdr & AQ_RX_DH_DESC_OFFSET_MASK) >>
1097                       AQ_RX_DH_DESC_OFFSET_SHIFT;
1098         pkt_count = desc_hdr & AQ_RX_DH_PKT_CNT_MASK;
1099         start_of_descs = skb_len - ((pkt_count + 1) *  sizeof(desc_hdr));
1100
1101         /* self check descs position */
1102         if (start_of_descs != desc_offset)
1103                 goto err;
1104
1105         /* self check desc_offset from header*/
1106         if (desc_offset >= skb_len)
1107                 goto err;
1108
1109         if (pkt_count == 0)
1110                 goto err;
1111
1112         /* Get the first RX packet descriptor */
1113         pkt_desc_ptr = (u64 *)(skb->data + desc_offset);
1114
1115         while (pkt_count--) {
1116                 u64 pkt_desc = le64_to_cpup(pkt_desc_ptr);
1117                 u32 pkt_len_with_padd = 0;
1118                 u32 pkt_len = 0;
1119
1120                 pkt_len = (u32)((pkt_desc & AQ_RX_PD_LEN_MASK) >>
1121                           AQ_RX_PD_LEN_SHIFT);
1122                 pkt_len_with_padd = ((pkt_len + 7) & 0x7FFF8);
1123
1124                 pkt_total_offset += pkt_len_with_padd;
1125                 if (pkt_total_offset > desc_offset ||
1126                     (pkt_count == 0 && pkt_total_offset != desc_offset)) {
1127                         goto err;
1128                 }
1129
1130                 if (pkt_desc & AQ_RX_PD_DROP ||
1131                     !(pkt_desc & AQ_RX_PD_RX_OK) ||
1132                     pkt_len > (dev->hard_mtu + AQ_RX_HW_PAD)) {
1133                         skb_pull(skb, pkt_len_with_padd);
1134                         /* Next RX Packet Descriptor */
1135                         pkt_desc_ptr++;
1136                         continue;
1137                 }
1138
1139                 /* Clone SKB */
1140                 new_skb = skb_clone(skb, GFP_ATOMIC);
1141
1142                 if (!new_skb)
1143                         goto err;
1144
1145                 new_skb->len = pkt_len;
1146                 skb_pull(new_skb, AQ_RX_HW_PAD);
1147                 skb_set_tail_pointer(new_skb, new_skb->len);
1148
1149                 new_skb->truesize = SKB_TRUESIZE(new_skb->len);
1150                 if (aqc111_data->rx_checksum)
1151                         aqc111_rx_checksum(new_skb, pkt_desc);
1152
1153                 if (pkt_desc & AQ_RX_PD_VLAN) {
1154                         vlan_tag = pkt_desc >> AQ_RX_PD_VLAN_SHIFT;
1155                         __vlan_hwaccel_put_tag(new_skb, htons(ETH_P_8021Q),
1156                                                vlan_tag & VLAN_VID_MASK);
1157                 }
1158
1159                 usbnet_skb_return(dev, new_skb);
1160                 if (pkt_count == 0)
1161                         break;
1162
1163                 skb_pull(skb, pkt_len_with_padd);
1164
1165                 /* Next RX Packet Header */
1166                 pkt_desc_ptr++;
1167
1168                 new_skb = NULL;
1169         }
1170
1171         return 1;
1172
1173 err:
1174         return 0;
1175 }
1176
1177 static struct sk_buff *aqc111_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
1178                                        gfp_t flags)
1179 {
1180         int frame_size = dev->maxpacket;
1181         struct sk_buff *new_skb = NULL;
1182         u64 *tx_desc_ptr = NULL;
1183         int padding_size = 0;
1184         int headroom = 0;
1185         int tailroom = 0;
1186         u64 tx_desc = 0;
1187         u16 tci = 0;
1188
1189         /*Length of actual data*/
1190         tx_desc |= skb->len & AQ_TX_DESC_LEN_MASK;
1191
1192         /* TSO MSS */
1193         tx_desc |= ((u64)(skb_shinfo(skb)->gso_size & AQ_TX_DESC_MSS_MASK)) <<
1194                    AQ_TX_DESC_MSS_SHIFT;
1195
1196         headroom = (skb->len + sizeof(tx_desc)) % 8;
1197         if (headroom != 0)
1198                 padding_size = 8 - headroom;
1199
1200         if (((skb->len + sizeof(tx_desc) + padding_size) % frame_size) == 0) {
1201                 padding_size += 8;
1202                 tx_desc |= AQ_TX_DESC_DROP_PADD;
1203         }
1204
1205         /* Vlan Tag */
1206         if (vlan_get_tag(skb, &tci) >= 0) {
1207                 tx_desc |= AQ_TX_DESC_VLAN;
1208                 tx_desc |= ((u64)tci & AQ_TX_DESC_VLAN_MASK) <<
1209                            AQ_TX_DESC_VLAN_SHIFT;
1210         }
1211
1212         if (!dev->can_dma_sg && (dev->net->features & NETIF_F_SG) &&
1213             skb_linearize(skb))
1214                 return NULL;
1215
1216         headroom = skb_headroom(skb);
1217         tailroom = skb_tailroom(skb);
1218
1219         if (!(headroom >= sizeof(tx_desc) && tailroom >= padding_size)) {
1220                 new_skb = skb_copy_expand(skb, sizeof(tx_desc),
1221                                           padding_size, flags);
1222                 dev_kfree_skb_any(skb);
1223                 skb = new_skb;
1224                 if (!skb)
1225                         return NULL;
1226         }
1227         if (padding_size != 0)
1228                 skb_put_zero(skb, padding_size);
1229         /* Copy TX header */
1230         tx_desc_ptr = skb_push(skb, sizeof(tx_desc));
1231         *tx_desc_ptr = cpu_to_le64(tx_desc);
1232
1233         usbnet_set_skb_tx_stats(skb, 1, 0);
1234
1235         return skb;
1236 }
1237
1238 static const struct driver_info aqc111_info = {
1239         .description    = "Aquantia AQtion USB to 5GbE Controller",
1240         .bind           = aqc111_bind,
1241         .unbind         = aqc111_unbind,
1242         .status         = aqc111_status,
1243         .link_reset     = aqc111_link_reset,
1244         .reset          = aqc111_reset,
1245         .stop           = aqc111_stop,
1246         .flags          = FLAG_ETHER | FLAG_FRAMING_AX |
1247                           FLAG_AVOID_UNLINK_URBS | FLAG_MULTI_PACKET,
1248         .rx_fixup       = aqc111_rx_fixup,
1249         .tx_fixup       = aqc111_tx_fixup,
1250 };
1251
1252 #define ASIX111_DESC \
1253 "ASIX USB 3.1 Gen1 to 5G Multi-Gigabit Ethernet Adapter"
1254
1255 static const struct driver_info asix111_info = {
1256         .description    = ASIX111_DESC,
1257         .bind           = aqc111_bind,
1258         .unbind         = aqc111_unbind,
1259         .status         = aqc111_status,
1260         .link_reset     = aqc111_link_reset,
1261         .reset          = aqc111_reset,
1262         .stop           = aqc111_stop,
1263         .flags          = FLAG_ETHER | FLAG_FRAMING_AX |
1264                           FLAG_AVOID_UNLINK_URBS | FLAG_MULTI_PACKET,
1265         .rx_fixup       = aqc111_rx_fixup,
1266         .tx_fixup       = aqc111_tx_fixup,
1267 };
1268
1269 #undef ASIX111_DESC
1270
1271 #define ASIX112_DESC \
1272 "ASIX USB 3.1 Gen1 to 2.5G Multi-Gigabit Ethernet Adapter"
1273
1274 static const struct driver_info asix112_info = {
1275         .description    = ASIX112_DESC,
1276         .bind           = aqc111_bind,
1277         .unbind         = aqc111_unbind,
1278         .status         = aqc111_status,
1279         .link_reset     = aqc111_link_reset,
1280         .reset          = aqc111_reset,
1281         .stop           = aqc111_stop,
1282         .flags          = FLAG_ETHER | FLAG_FRAMING_AX |
1283                           FLAG_AVOID_UNLINK_URBS | FLAG_MULTI_PACKET,
1284         .rx_fixup       = aqc111_rx_fixup,
1285         .tx_fixup       = aqc111_tx_fixup,
1286 };
1287
1288 #undef ASIX112_DESC
1289
1290 static const struct driver_info trendnet_info = {
1291         .description    = "USB-C 3.1 to 5GBASE-T Ethernet Adapter",
1292         .bind           = aqc111_bind,
1293         .unbind         = aqc111_unbind,
1294         .status         = aqc111_status,
1295         .link_reset     = aqc111_link_reset,
1296         .reset          = aqc111_reset,
1297         .stop           = aqc111_stop,
1298         .flags          = FLAG_ETHER | FLAG_FRAMING_AX |
1299                           FLAG_AVOID_UNLINK_URBS | FLAG_MULTI_PACKET,
1300         .rx_fixup       = aqc111_rx_fixup,
1301         .tx_fixup       = aqc111_tx_fixup,
1302 };
1303
1304 static const struct driver_info qnap_info = {
1305         .description    = "QNAP QNA-UC5G1T USB to 5GbE Adapter",
1306         .bind           = aqc111_bind,
1307         .unbind         = aqc111_unbind,
1308         .status         = aqc111_status,
1309         .link_reset     = aqc111_link_reset,
1310         .reset          = aqc111_reset,
1311         .stop           = aqc111_stop,
1312         .flags          = FLAG_ETHER | FLAG_FRAMING_AX |
1313                           FLAG_AVOID_UNLINK_URBS | FLAG_MULTI_PACKET,
1314         .rx_fixup       = aqc111_rx_fixup,
1315         .tx_fixup       = aqc111_tx_fixup,
1316 };
1317
1318 static int aqc111_suspend(struct usb_interface *intf, pm_message_t message)
1319 {
1320         struct usbnet *dev = usb_get_intfdata(intf);
1321         struct aqc111_data *aqc111_data = dev->driver_priv;
1322         u16 temp_rx_ctrl = 0x00;
1323         u16 reg16;
1324         u8 reg8;
1325
1326         usbnet_suspend(intf, message);
1327
1328         aqc111_read16_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_RX_CTL, 2, &reg16);
1329         temp_rx_ctrl = reg16;
1330         /* Stop RX operations*/
1331         reg16 &= ~SFR_RX_CTL_START;
1332         aqc111_write16_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_RX_CTL, 2, &reg16);
1333         /* Force bz */
1334         aqc111_read16_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_PHYPWR_RSTCTL,
1335                                2, &reg16);
1336         reg16 |= SFR_PHYPWR_RSTCTL_BZ;
1337         aqc111_write16_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_PHYPWR_RSTCTL,
1338                                 2, &reg16);
1339
1340         reg8 = SFR_BULK_OUT_EFF_EN;
1341         aqc111_write_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_BULK_OUT_CTRL,
1342                               1, 1, &reg8);
1343
1344         temp_rx_ctrl &= ~(SFR_RX_CTL_START | SFR_RX_CTL_RF_WAK |
1345                           SFR_RX_CTL_AP | SFR_RX_CTL_AM);
1346         aqc111_write16_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_RX_CTL,
1347                                 2, &temp_rx_ctrl);
1348
1349         reg8 = 0x00;
1350         aqc111_write_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_ETH_MAC_PATH,
1351                               1, 1, &reg8);
1352
1353         if (aqc111_data->wol_flags) {
1354                 struct aqc111_wol_cfg wol_cfg;
1355
1356                 memset(&wol_cfg, 0, sizeof(struct aqc111_wol_cfg));
1357
1358                 aqc111_data->phy_cfg |= AQ_WOL;
1359                 ether_addr_copy(wol_cfg.hw_addr, dev->net->dev_addr);
1360                 wol_cfg.flags = aqc111_data->wol_flags;
1361
1362                 temp_rx_ctrl |= (SFR_RX_CTL_AB | SFR_RX_CTL_START);
1363                 aqc111_write16_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_RX_CTL,
1364                                         2, &temp_rx_ctrl);
1365                 reg8 = 0x00;
1366                 aqc111_write_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_BM_INT_MASK,
1367                                       1, 1, &reg8);
1368                 reg8 = SFR_BMRX_DMA_EN;
1369                 aqc111_write_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_BMRX_DMA_CONTROL,
1370                                       1, 1, &reg8);
1371                 reg8 = SFR_RX_PATH_READY;
1372                 aqc111_write_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_ETH_MAC_PATH,
1373                                       1, 1, &reg8);
1374                 reg8 = 0x07;
1375                 aqc111_write_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_RX_BULKIN_QCTRL,
1376                                       1, 1, &reg8);
1377                 reg8 = 0x00;
1378                 aqc111_write_cmd_nopm(dev, AQ_ACCESS_MAC,
1379                                       SFR_RX_BULKIN_QTIMR_LOW, 1, 1, &reg8);
1380                 aqc111_write_cmd_nopm(dev, AQ_ACCESS_MAC,
1381                                       SFR_RX_BULKIN_QTIMR_HIGH, 1, 1, &reg8);
1382                 reg8 = 0xFF;
1383                 aqc111_write_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_RX_BULKIN_QSIZE,
1384                                       1, 1, &reg8);
1385                 aqc111_write_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_RX_BULKIN_QIFG,
1386                                       1, 1, &reg8);
1387
1388                 aqc111_read16_cmd_nopm(dev, AQ_ACCESS_MAC,
1389                                        SFR_MEDIUM_STATUS_MODE, 2, &reg16);
1390                 reg16 |= SFR_MEDIUM_RECEIVE_EN;
1391                 aqc111_write16_cmd_nopm(dev, AQ_ACCESS_MAC,
1392                                         SFR_MEDIUM_STATUS_MODE, 2, &reg16);
1393
1394                 aqc111_write_cmd(dev, AQ_WOL_CFG, 0, 0,
1395                                  WOL_CFG_SIZE, &wol_cfg);
1396                 aqc111_write32_cmd(dev, AQ_PHY_OPS, 0, 0,
1397                                    &aqc111_data->phy_cfg);
1398         } else {
1399                 aqc111_data->phy_cfg |= AQ_LOW_POWER;
1400                 aqc111_write32_cmd(dev, AQ_PHY_OPS, 0, 0,
1401                                    &aqc111_data->phy_cfg);
1402
1403                 /* Disable RX path */
1404                 aqc111_read16_cmd_nopm(dev, AQ_ACCESS_MAC,
1405                                        SFR_MEDIUM_STATUS_MODE, 2, &reg16);
1406                 reg16 &= ~SFR_MEDIUM_RECEIVE_EN;
1407                 aqc111_write16_cmd_nopm(dev, AQ_ACCESS_MAC,
1408                                         SFR_MEDIUM_STATUS_MODE, 2, &reg16);
1409         }
1410
1411         return 0;
1412 }
1413
1414 static int aqc111_resume(struct usb_interface *intf)
1415 {
1416         struct usbnet *dev = usb_get_intfdata(intf);
1417         struct aqc111_data *aqc111_data = dev->driver_priv;
1418         u16 reg16;
1419         u8 reg8;
1420
1421         netif_carrier_off(dev->net);
1422
1423         /* Power up ethernet PHY */
1424         aqc111_data->phy_cfg |= AQ_PHY_POWER_EN;
1425         aqc111_data->phy_cfg &= ~AQ_LOW_POWER;
1426         aqc111_data->phy_cfg &= ~AQ_WOL;
1427
1428         reg8 = 0xFF;
1429         aqc111_write_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_BM_INT_MASK,
1430                               1, 1, &reg8);
1431         /* Configure RX control register => start operation */
1432         reg16 = aqc111_data->rxctl;
1433         reg16 &= ~SFR_RX_CTL_START;
1434         aqc111_write16_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_RX_CTL, 2, &reg16);
1435
1436         reg16 |= SFR_RX_CTL_START;
1437         aqc111_write16_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_RX_CTL, 2, &reg16);
1438
1439         aqc111_set_phy_speed(dev, aqc111_data->autoneg,
1440                              aqc111_data->advertised_speed);
1441
1442         aqc111_read16_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE,
1443                                2, &reg16);
1444         reg16 |= SFR_MEDIUM_RECEIVE_EN;
1445         aqc111_write16_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE,
1446                                 2, &reg16);
1447         reg8 = SFR_RX_PATH_READY;
1448         aqc111_write_cmd_nopm(dev, AQ_ACCESS_MAC, SFR_ETH_MAC_PATH,
1449                               1, 1, &reg8);
1450         reg8 = 0x0;
1451         aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_BMRX_DMA_CONTROL, 1, 1, &reg8);
1452
1453         return usbnet_resume(intf);
1454 }
1455
1456 #define AQC111_USB_ETH_DEV(vid, pid, table) \
1457         USB_DEVICE_INTERFACE_CLASS((vid), (pid), USB_CLASS_VENDOR_SPEC), \
1458         .driver_info = (unsigned long)&(table) \
1459 }, \
1460 { \
1461         USB_DEVICE_AND_INTERFACE_INFO((vid), (pid), \
1462                                       USB_CLASS_COMM, \
1463                                       USB_CDC_SUBCLASS_ETHERNET, \
1464                                       USB_CDC_PROTO_NONE), \
1465         .driver_info = (unsigned long)&(table),
1466
1467 static const struct usb_device_id products[] = {
1468         {AQC111_USB_ETH_DEV(0x2eca, 0xc101, aqc111_info)},
1469         {AQC111_USB_ETH_DEV(0x0b95, 0x2790, asix111_info)},
1470         {AQC111_USB_ETH_DEV(0x0b95, 0x2791, asix112_info)},
1471         {AQC111_USB_ETH_DEV(0x20f4, 0xe05a, trendnet_info)},
1472         {AQC111_USB_ETH_DEV(0x1c04, 0x0015, qnap_info)},
1473         { },/* END */
1474 };
1475 MODULE_DEVICE_TABLE(usb, products);
1476
1477 static struct usb_driver aq_driver = {
1478         .name           = "aqc111",
1479         .id_table       = products,
1480         .probe          = usbnet_probe,
1481         .suspend        = aqc111_suspend,
1482         .resume         = aqc111_resume,
1483         .disconnect     = usbnet_disconnect,
1484 };
1485
1486 module_usb_driver(aq_driver);
1487
1488 MODULE_DESCRIPTION("Aquantia AQtion USB to 5/2.5GbE Controllers");
1489 MODULE_LICENSE("GPL");