drivers/net/usb/asix_common.c

   1 /*
   2  * ASIX AX8817X based USB 2.0 Ethernet Devices
   3  * Copyright (C) 2003-2006 David Hollis <dhollis@davehollis.com>
   4  * Copyright (C) 2005 Phil Chang <pchang23@sbcglobal.net>
   5  * Copyright (C) 2006 James Painter <jamie.painter@iname.com>
   6  * Copyright (c) 2002-2003 TiVo Inc.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  20  */
  21
  22 #include "asix.h"
  23
  24 int asix_read_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
  25                   u16 size, void *data, int in_pm)
  26 {
  27         int ret;
  28         int (*fn)(struct usbnet *, u8, u8, u16, u16, void *, u16);
  29
  30         BUG_ON(!dev);
  31
  32         if (!in_pm)
  33                 fn = usbnet_read_cmd;
  34         else
  35                 fn = usbnet_read_cmd_nopm;
  36
  37         ret = fn(dev, cmd, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
  38                  value, index, data, size);
  39
  40         if (unlikely(ret < 0))
  41                 netdev_warn(dev->net, "Failed to read reg index 0x%04x: %d\n",
  42                             index, ret);
  43
  44         return ret;
  45 }
  46
  47 int asix_write_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
  48                    u16 size, void *data, int in_pm)
  49 {
  50         int ret;
  51         int (*fn)(struct usbnet *, u8, u8, u16, u16, const void *, u16);
  52
  53         BUG_ON(!dev);
  54
  55         if (!in_pm)
  56                 fn = usbnet_write_cmd;
  57         else
  58                 fn = usbnet_write_cmd_nopm;
  59
  60         ret = fn(dev, cmd, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
  61                  value, index, data, size);
  62
  63         if (unlikely(ret < 0))
  64                 netdev_warn(dev->net, "Failed to write reg index 0x%04x: %d\n",
  65                             index, ret);
  66
  67         return ret;
  68 }
  69
  70 void asix_write_cmd_async(struct usbnet *dev, u8 cmd, u16 value, u16 index,
  71                           u16 size, void *data)
  72 {
  73         usbnet_write_cmd_async(dev, cmd,
  74                                USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
  75                                value, index, data, size);
  76 }
  77
  78 static void reset_asix_rx_fixup_info(struct asix_rx_fixup_info *rx)
  79 {
  80         /* Reset the variables that have a lifetime outside of
  81          * asix_rx_fixup_internal() so that future processing starts from a
  82          * known set of initial conditions.
  83          */
  84
  85         if (rx->ax_skb) {
  86                 /* Discard any incomplete Ethernet frame in the netdev buffer */
  87                 kfree_skb(rx->ax_skb);
  88                 rx->ax_skb = NULL;
  89         }
  90
  91         /* Assume the Data header 32-bit word is at the start of the current
  92          * or next URB socket buffer so reset all the state variables.
  93          */
  94         rx->remaining = 0;
  95         rx->split_head = false;
  96         rx->header = 0;
  97 }
  98
  99 int asix_rx_fixup_internal(struct usbnet *dev, struct sk_buff *skb,
 100                            struct asix_rx_fixup_info *rx)
 101 {
 102         int offset = 0;
 103         u16 size;
 104
 105         /* When an Ethernet frame spans multiple URB socket buffers,
 106          * do a sanity test for the Data header synchronisation.
 107          * Attempt to detect the situation of the previous socket buffer having
 108          * been truncated or a socket buffer was missing. These situations
 109          * cause a discontinuity in the data stream and therefore need to avoid
 110          * appending bad data to the end of the current netdev socket buffer.
 111          * Also avoid unnecessarily discarding a good current netdev socket
 112          * buffer.
 113          */
 114         if (rx->remaining && (rx->remaining + sizeof(u32) <= skb->len)) {
 115                 offset = ((rx->remaining + 1) & 0xfffe);
 116                 rx->header = get_unaligned_le32(skb->data + offset);
 117                 offset = 0;
 118
 119                 size = (u16)(rx->header & 0x7ff);
 120                 if (size != ((~rx->header >> 16) & 0x7ff)) {
 121                         netdev_err(dev->net, "asix_rx_fixup() Data Header synchronisation was lost, remaining %d\n",
 122                                    rx->remaining);
 123                         reset_asix_rx_fixup_info(rx);
 124                 }
 125         }
 126
 127         while (offset + sizeof(u16) <= skb->len) {
 128                 u16 copy_length;
 129
 130                 if (!rx->remaining) {
 131                         if (skb->len - offset == sizeof(u16)) {
 132                                 rx->header = get_unaligned_le16(
 133                                                 skb->data + offset);
 134                                 rx->split_head = true;
 135                                 offset += sizeof(u16);
 136                                 break;
 137                         }
 138
 139                         if (rx->split_head == true) {
 140                                 rx->header |= (get_unaligned_le16(
 141                                                 skb->data + offset) << 16);
 142                                 rx->split_head = false;
 143                                 offset += sizeof(u16);
 144                         } else {
 145                                 rx->header = get_unaligned_le32(skb->data +
 146                                                                 offset);
 147                                 offset += sizeof(u32);
 148                         }
 149
 150                         /* take frame length from Data header 32-bit word */
 151                         size = (u16)(rx->header & 0x7ff);
 152                         if (size != ((~rx->header >> 16) & 0x7ff)) {
 153                                 netdev_err(dev->net, "asix_rx_fixup() Bad Header Length 0x%x, offset %d\n",
 154                                            rx->header, offset);
 155                                 reset_asix_rx_fixup_info(rx);
 156                                 return 0;
 157                         }
 158                         if (size > dev->net->mtu + ETH_HLEN + VLAN_HLEN) {
 159                                 netdev_dbg(dev->net, "asix_rx_fixup() Bad RX Length %d\n",
 160                                            size);
 161                                 reset_asix_rx_fixup_info(rx);
 162                                 return 0;
 163                         }
 164
 165                         /* Sometimes may fail to get a netdev socket buffer but
 166                          * continue to process the URB socket buffer so that
 167                          * synchronisation of the Ethernet frame Data header
 168                          * word is maintained.
 169                          */
 170                         rx->ax_skb = netdev_alloc_skb_ip_align(dev->net, size);
 171
 172                         rx->remaining = size;
 173                 }
 174
 175                 if (rx->remaining > skb->len - offset) {
 176                         copy_length = skb->len - offset;
 177                         rx->remaining -= copy_length;
 178                 } else {
 179                         copy_length = rx->remaining;
 180                         rx->remaining = 0;
 181                 }
 182
 183                 if (rx->ax_skb) {
 184                         skb_put_data(rx->ax_skb, skb->data + offset,
 185                                      copy_length);
 186                         if (!rx->remaining) {
 187                                 usbnet_skb_return(dev, rx->ax_skb);
 188                                 rx->ax_skb = NULL;
 189                         }
 190                 }
 191
 192                 offset += (copy_length + 1) & 0xfffe;
 193         }
 194
 195         if (skb->len != offset) {
 196                 netdev_err(dev->net, "asix_rx_fixup() Bad SKB Length %d, %d\n",
 197                            skb->len, offset);
 198                 reset_asix_rx_fixup_info(rx);
 199                 return 0;
 200         }
 201
 202         return 1;
 203 }
 204
 205 int asix_rx_fixup_common(struct usbnet *dev, struct sk_buff *skb)
 206 {
 207         struct asix_common_private *dp = dev->driver_priv;
 208         struct asix_rx_fixup_info *rx = &dp->rx_fixup_info;
 209
 210         return asix_rx_fixup_internal(dev, skb, rx);
 211 }
 212
 213 void asix_rx_fixup_common_free(struct asix_common_private *dp)
 214 {
 215         struct asix_rx_fixup_info *rx;
 216
 217         if (!dp)
 218                 return;
 219
 220         rx = &dp->rx_fixup_info;
 221
 222         if (rx->ax_skb) {
 223                 kfree_skb(rx->ax_skb);
 224                 rx->ax_skb = NULL;
 225         }
 226 }
 227
 228 struct sk_buff *asix_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
 229                               gfp_t flags)
 230 {
 231         int padlen;
 232         int headroom = skb_headroom(skb);
 233         int tailroom = skb_tailroom(skb);
 234         u32 packet_len;
 235         u32 padbytes = 0xffff0000;
 236
 237         padlen = ((skb->len + 4) & (dev->maxpacket - 1)) ? 0 : 4;
 238
 239         /* We need to push 4 bytes in front of frame (packet_len)
 240          * and maybe add 4 bytes after the end (if padlen is 4)
 241          *
 242          * Avoid skb_copy_expand() expensive call, using following rules :
 243          * - We are allowed to push 4 bytes in headroom if skb_header_cloned()
 244          *   is false (and if we have 4 bytes of headroom)
 245          * - We are allowed to put 4 bytes at tail if skb_cloned()
 246          *   is false (and if we have 4 bytes of tailroom)
 247          *
 248          * TCP packets for example are cloned, but __skb_header_release()
 249          * was called in tcp stack, allowing us to use headroom for our needs.
 250          */
 251         if (!skb_header_cloned(skb) &&
 252             !(padlen && skb_cloned(skb)) &&
 253             headroom + tailroom >= 4 + padlen) {
 254                 /* following should not happen, but better be safe */
 255                 if (headroom < 4 ||
 256                     tailroom < padlen) {
 257                         skb->data = memmove(skb->head + 4, skb->data, skb->len);
 258                         skb_set_tail_pointer(skb, skb->len);
 259                 }
 260         } else {
 261                 struct sk_buff *skb2;
 262
 263                 skb2 = skb_copy_expand(skb, 4, padlen, flags);
 264                 dev_kfree_skb_any(skb);
 265                 skb = skb2;
 266                 if (!skb)
 267                         return NULL;
 268         }
 269
 270         packet_len = ((skb->len ^ 0x0000ffff) << 16) + skb->len;
 271         skb_push(skb, 4);
 272         cpu_to_le32s(&packet_len);
 273         skb_copy_to_linear_data(skb, &packet_len, sizeof(packet_len));
 274
 275         if (padlen) {
 276                 cpu_to_le32s(&padbytes);
 277                 memcpy(skb_tail_pointer(skb), &padbytes, sizeof(padbytes));
 278                 skb_put(skb, sizeof(padbytes));
 279         }
 280
 281         usbnet_set_skb_tx_stats(skb, 1, 0);
 282         return skb;
 283 }
 284
 285 int asix_set_sw_mii(struct usbnet *dev, int in_pm)
 286 {
 287         int ret;
 288         ret = asix_write_cmd(dev, AX_CMD_SET_SW_MII, 0x0000, 0, 0, NULL, in_pm);
 289
 290         if (ret < 0)
 291                 netdev_err(dev->net, "Failed to enable software MII access\n");
 292         return ret;
 293 }
 294
 295 int asix_set_hw_mii(struct usbnet *dev, int in_pm)
 296 {
 297         int ret;
 298         ret = asix_write_cmd(dev, AX_CMD_SET_HW_MII, 0x0000, 0, 0, NULL, in_pm);
 299         if (ret < 0)
 300                 netdev_err(dev->net, "Failed to enable hardware MII access\n");
 301         return ret;
 302 }
 303
 304 int asix_read_phy_addr(struct usbnet *dev, int internal)
 305 {
 306         int offset = (internal ? 1 : 0);
 307         u8 buf[2];
 308         int ret = asix_read_cmd(dev, AX_CMD_READ_PHY_ID, 0, 0, 2, buf, 0);
 309
 310         netdev_dbg(dev->net, "asix_get_phy_addr()\n");
 311
 312         if (ret < 0) {
 313                 netdev_err(dev->net, "Error reading PHYID register: %02x\n", ret);
 314                 goto out;
 315         }
 316         netdev_dbg(dev->net, "asix_get_phy_addr() returning 0x%04x\n",
 317                    *((__le16 *)buf));
 318         ret = buf[offset];
 319
 320 out:
 321         return ret;
 322 }
 323
 324 int asix_get_phy_addr(struct usbnet *dev)
 325 {
 326         /* return the address of the internal phy */
 327         return asix_read_phy_addr(dev, 1);
 328 }
 329
 330
 331 int asix_sw_reset(struct usbnet *dev, u8 flags, int in_pm)
 332 {
 333         int ret;
 334
 335         ret = asix_write_cmd(dev, AX_CMD_SW_RESET, flags, 0, 0, NULL, in_pm);
 336         if (ret < 0)
 337                 netdev_err(dev->net, "Failed to send software reset: %02x\n", ret);
 338
 339         return ret;
 340 }
 341
 342 u16 asix_read_rx_ctl(struct usbnet *dev, int in_pm)
 343 {
 344         __le16 v;
 345         int ret = asix_read_cmd(dev, AX_CMD_READ_RX_CTL, 0, 0, 2, &v, in_pm);
 346
 347         if (ret < 0) {
 348                 netdev_err(dev->net, "Error reading RX_CTL register: %02x\n", ret);
 349                 goto out;
 350         }
 351         ret = le16_to_cpu(v);
 352 out:
 353         return ret;
 354 }
 355
 356 int asix_write_rx_ctl(struct usbnet *dev, u16 mode, int in_pm)
 357 {
 358         int ret;
 359
 360         netdev_dbg(dev->net, "asix_write_rx_ctl() - mode = 0x%04x\n", mode);
 361         ret = asix_write_cmd(dev, AX_CMD_WRITE_RX_CTL, mode, 0, 0, NULL, in_pm);
 362         if (ret < 0)
 363                 netdev_err(dev->net, "Failed to write RX_CTL mode to 0x%04x: %02x\n",
 364                            mode, ret);
 365
 366         return ret;
 367 }
 368
 369 u16 asix_read_medium_status(struct usbnet *dev, int in_pm)
 370 {
 371         __le16 v;
 372         int ret = asix_read_cmd(dev, AX_CMD_READ_MEDIUM_STATUS,
 373                                 0, 0, 2, &v, in_pm);
 374
 375         if (ret < 0) {
 376                 netdev_err(dev->net, "Error reading Medium Status register: %02x\n",
 377                            ret);
 378                 return ret;     /* TODO: callers not checking for error ret */
 379         }
 380
 381         return le16_to_cpu(v);
 382
 383 }
 384
 385 int asix_write_medium_mode(struct usbnet *dev, u16 mode, int in_pm)
 386 {
 387         int ret;
 388
 389         netdev_dbg(dev->net, "asix_write_medium_mode() - mode = 0x%04x\n", mode);
 390         ret = asix_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE,
 391                              mode, 0, 0, NULL, in_pm);
 392         if (ret < 0)
 393                 netdev_err(dev->net, "Failed to write Medium Mode mode to 0x%04x: %02x\n",
 394                            mode, ret);
 395
 396         return ret;
 397 }
 398
 399 int asix_write_gpio(struct usbnet *dev, u16 value, int sleep, int in_pm)
 400 {
 401         int ret;
 402
 403         netdev_dbg(dev->net, "asix_write_gpio() - value = 0x%04x\n", value);
 404         ret = asix_write_cmd(dev, AX_CMD_WRITE_GPIOS, value, 0, 0, NULL, in_pm);
 405         if (ret < 0)
 406                 netdev_err(dev->net, "Failed to write GPIO value 0x%04x: %02x\n",
 407                            value, ret);
 408
 409         if (sleep)
 410                 msleep(sleep);
 411
 412         return ret;
 413 }
 414
 415 /*
 416  * AX88772 & AX88178 have a 16-bit RX_CTL value
 417  */
 418 void asix_set_multicast(struct net_device *net)
 419 {
 420         struct usbnet *dev = netdev_priv(net);
 421         struct asix_data *data = (struct asix_data *)&dev->data;
 422         u16 rx_ctl = AX_DEFAULT_RX_CTL;
 423
 424         if (net->flags & IFF_PROMISC) {
 425                 rx_ctl |= AX_RX_CTL_PRO;
 426         } else if (net->flags & IFF_ALLMULTI ||
 427                    netdev_mc_count(net) > AX_MAX_MCAST) {
 428                 rx_ctl |= AX_RX_CTL_AMALL;
 429         } else if (netdev_mc_empty(net)) {
 430                 /* just broadcast and directed */
 431         } else {
 432                 /* We use the 20 byte dev->data
 433                  * for our 8 byte filter buffer
 434                  * to avoid allocating memory that
 435                  * is tricky to free later */
 436                 struct netdev_hw_addr *ha;
 437                 u32 crc_bits;
 438
 439                 memset(data->multi_filter, 0, AX_MCAST_FILTER_SIZE);
 440
 441                 /* Build the multicast hash filter. */
 442                 netdev_for_each_mc_addr(ha, net) {
 443                         crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26;
 444                         data->multi_filter[crc_bits >> 3] |=
 445                             1 << (crc_bits & 7);
 446                 }
 447
 448                 asix_write_cmd_async(dev, AX_CMD_WRITE_MULTI_FILTER, 0, 0,
 449                                    AX_MCAST_FILTER_SIZE, data->multi_filter);
 450
 451                 rx_ctl |= AX_RX_CTL_AM;
 452         }
 453
 454         asix_write_cmd_async(dev, AX_CMD_WRITE_RX_CTL, rx_ctl, 0, 0, NULL);
 455 }
 456
 457 int asix_mdio_read(struct net_device *netdev, int phy_id, int loc)
 458 {
 459         struct usbnet *dev = netdev_priv(netdev);
 460         __le16 res;
 461         u8 smsr;
 462         int i = 0;
 463         int ret;
 464
 465         mutex_lock(&dev->phy_mutex);
 466         do {
 467                 ret = asix_set_sw_mii(dev, 0);
 468                 if (ret == -ENODEV || ret == -ETIMEDOUT)
 469                         break;
 470                 usleep_range(1000, 1100);
 471                 ret = asix_read_cmd(dev, AX_CMD_STATMNGSTS_REG,
 472                                     0, 0, 1, &smsr, 0);
 473         } while (!(smsr & AX_HOST_EN) && (i++ < 30) && (ret != -ENODEV));
 474         if (ret == -ENODEV || ret == -ETIMEDOUT) {
 475                 mutex_unlock(&dev->phy_mutex);
 476                 return ret;
 477         }
 478
 479         asix_read_cmd(dev, AX_CMD_READ_MII_REG, phy_id,
 480                                 (__u16)loc, 2, &res, 0);
 481         asix_set_hw_mii(dev, 0);
 482         mutex_unlock(&dev->phy_mutex);
 483
 484         netdev_dbg(dev->net, "asix_mdio_read() phy_id=0x%02x, loc=0x%02x, returns=0x%04x\n",
 485                         phy_id, loc, le16_to_cpu(res));
 486
 487         return le16_to_cpu(res);
 488 }
 489
 490 void asix_mdio_write(struct net_device *netdev, int phy_id, int loc, int val)
 491 {
 492         struct usbnet *dev = netdev_priv(netdev);
 493         __le16 res = cpu_to_le16(val);
 494         u8 smsr;
 495         int i = 0;
 496         int ret;
 497
 498         netdev_dbg(dev->net, "asix_mdio_write() phy_id=0x%02x, loc=0x%02x, val=0x%04x\n",
 499                         phy_id, loc, val);
 500
 501         mutex_lock(&dev->phy_mutex);
 502         do {
 503                 ret = asix_set_sw_mii(dev, 0);
 504                 if (ret == -ENODEV)
 505                         break;
 506                 usleep_range(1000, 1100);
 507                 ret = asix_read_cmd(dev, AX_CMD_STATMNGSTS_REG,
 508                                     0, 0, 1, &smsr, 0);
 509         } while (!(smsr & AX_HOST_EN) && (i++ < 30) && (ret != -ENODEV));
 510         if (ret == -ENODEV) {
 511                 mutex_unlock(&dev->phy_mutex);
 512                 return;
 513         }
 514
 515         asix_write_cmd(dev, AX_CMD_WRITE_MII_REG, phy_id,
 516                        (__u16)loc, 2, &res, 0);
 517         asix_set_hw_mii(dev, 0);
 518         mutex_unlock(&dev->phy_mutex);
 519 }
 520
 521 int asix_mdio_read_nopm(struct net_device *netdev, int phy_id, int loc)
 522 {
 523         struct usbnet *dev = netdev_priv(netdev);
 524         __le16 res;
 525         u8 smsr;
 526         int i = 0;
 527         int ret;
 528
 529         mutex_lock(&dev->phy_mutex);
 530         do {
 531                 ret = asix_set_sw_mii(dev, 1);
 532                 if (ret == -ENODEV || ret == -ETIMEDOUT)
 533                         break;
 534                 usleep_range(1000, 1100);
 535                 ret = asix_read_cmd(dev, AX_CMD_STATMNGSTS_REG,
 536                                     0, 0, 1, &smsr, 1);
 537         } while (!(smsr & AX_HOST_EN) && (i++ < 30) && (ret != -ENODEV));
 538         if (ret == -ENODEV || ret == -ETIMEDOUT) {
 539                 mutex_unlock(&dev->phy_mutex);
 540                 return ret;
 541         }
 542
 543         asix_read_cmd(dev, AX_CMD_READ_MII_REG, phy_id,
 544                       (__u16)loc, 2, &res, 1);
 545         asix_set_hw_mii(dev, 1);
 546         mutex_unlock(&dev->phy_mutex);
 547
 548         netdev_dbg(dev->net, "asix_mdio_read_nopm() phy_id=0x%02x, loc=0x%02x, returns=0x%04x\n",
 549                         phy_id, loc, le16_to_cpu(res));
 550
 551         return le16_to_cpu(res);
 552 }
 553
 554 void
 555 asix_mdio_write_nopm(struct net_device *netdev, int phy_id, int loc, int val)
 556 {
 557         struct usbnet *dev = netdev_priv(netdev);
 558         __le16 res = cpu_to_le16(val);
 559         u8 smsr;
 560         int i = 0;
 561         int ret;
 562
 563         netdev_dbg(dev->net, "asix_mdio_write() phy_id=0x%02x, loc=0x%02x, val=0x%04x\n",
 564                         phy_id, loc, val);
 565
 566         mutex_lock(&dev->phy_mutex);
 567         do {
 568                 ret = asix_set_sw_mii(dev, 1);
 569                 if (ret == -ENODEV)
 570                         break;
 571                 usleep_range(1000, 1100);
 572                 ret = asix_read_cmd(dev, AX_CMD_STATMNGSTS_REG,
 573                                     0, 0, 1, &smsr, 1);
 574         } while (!(smsr & AX_HOST_EN) && (i++ < 30) && (ret != -ENODEV));
 575         if (ret == -ENODEV) {
 576                 mutex_unlock(&dev->phy_mutex);
 577                 return;
 578         }
 579
 580         asix_write_cmd(dev, AX_CMD_WRITE_MII_REG, phy_id,
 581                        (__u16)loc, 2, &res, 1);
 582         asix_set_hw_mii(dev, 1);
 583         mutex_unlock(&dev->phy_mutex);
 584 }
 585
 586 void asix_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
 587 {
 588         struct usbnet *dev = netdev_priv(net);
 589         u8 opt;
 590
 591         if (asix_read_cmd(dev, AX_CMD_READ_MONITOR_MODE,
 592                           0, 0, 1, &opt, 0) < 0) {
 593                 wolinfo->supported = 0;
 594                 wolinfo->wolopts = 0;
 595                 return;
 596         }
 597         wolinfo->supported = WAKE_PHY | WAKE_MAGIC;
 598         wolinfo->wolopts = 0;
 599         if (opt & AX_MONITOR_LINK)
 600                 wolinfo->wolopts |= WAKE_PHY;
 601         if (opt & AX_MONITOR_MAGIC)
 602                 wolinfo->wolopts |= WAKE_MAGIC;
 603 }
 604
 605 int asix_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
 606 {
 607         struct usbnet *dev = netdev_priv(net);
 608         u8 opt = 0;
 609
 610         if (wolinfo->wolopts & ~(WAKE_PHY | WAKE_MAGIC))
 611                 return -EINVAL;
 612
 613         if (wolinfo->wolopts & WAKE_PHY)
 614                 opt |= AX_MONITOR_LINK;
 615         if (wolinfo->wolopts & WAKE_MAGIC)
 616                 opt |= AX_MONITOR_MAGIC;
 617
 618         if (asix_write_cmd(dev, AX_CMD_WRITE_MONITOR_MODE,
 619                               opt, 0, 0, NULL, 0) < 0)
 620                 return -EINVAL;
 621
 622         return 0;
 623 }
 624
 625 int asix_get_eeprom_len(struct net_device *net)
 626 {
 627         return AX_EEPROM_LEN;
 628 }
 629
 630 int asix_get_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom,
 631                     u8 *data)
 632 {
 633         struct usbnet *dev = netdev_priv(net);
 634         u16 *eeprom_buff;
 635         int first_word, last_word;
 636         int i;
 637
 638         if (eeprom->len == 0)
 639                 return -EINVAL;
 640
 641         eeprom->magic = AX_EEPROM_MAGIC;
 642
 643         first_word = eeprom->offset >> 1;
 644         last_word = (eeprom->offset + eeprom->len - 1) >> 1;
 645
 646         eeprom_buff = kmalloc_array(last_word - first_word + 1, sizeof(u16),
 647                                     GFP_KERNEL);
 648         if (!eeprom_buff)
 649                 return -ENOMEM;
 650
 651         /* ax8817x returns 2 bytes from eeprom on read */
 652         for (i = first_word; i <= last_word; i++) {
 653                 if (asix_read_cmd(dev, AX_CMD_READ_EEPROM, i, 0, 2,
 654                                   &eeprom_buff[i - first_word], 0) < 0) {
 655                         kfree(eeprom_buff);
 656                         return -EIO;
 657                 }
 658         }
 659
 660         memcpy(data, (u8 *)eeprom_buff + (eeprom->offset & 1), eeprom->len);
 661         kfree(eeprom_buff);
 662         return 0;
 663 }
 664
 665 int asix_set_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom,
 666                     u8 *data)
 667 {
 668         struct usbnet *dev = netdev_priv(net);
 669         u16 *eeprom_buff;
 670         int first_word, last_word;
 671         int i;
 672         int ret;
 673
 674         netdev_dbg(net, "write EEPROM len %d, offset %d, magic 0x%x\n",
 675                    eeprom->len, eeprom->offset, eeprom->magic);
 676
 677         if (eeprom->len == 0)
 678                 return -EINVAL;
 679
 680         if (eeprom->magic != AX_EEPROM_MAGIC)
 681                 return -EINVAL;
 682
 683         first_word = eeprom->offset >> 1;
 684         last_word = (eeprom->offset + eeprom->len - 1) >> 1;
 685
 686         eeprom_buff = kmalloc_array(last_word - first_word + 1, sizeof(u16),
 687                                     GFP_KERNEL);
 688         if (!eeprom_buff)
 689                 return -ENOMEM;
 690
 691         /* align data to 16 bit boundaries, read the missing data from
 692            the EEPROM */
 693         if (eeprom->offset & 1) {
 694                 ret = asix_read_cmd(dev, AX_CMD_READ_EEPROM, first_word, 0, 2,
 695                                     &eeprom_buff[0], 0);
 696                 if (ret < 0) {
 697                         netdev_err(net, "Failed to read EEPROM at offset 0x%02x.\n", first_word);
 698                         goto free;
 699                 }
 700         }
 701
 702         if ((eeprom->offset + eeprom->len) & 1) {
 703                 ret = asix_read_cmd(dev, AX_CMD_READ_EEPROM, last_word, 0, 2,
 704                                     &eeprom_buff[last_word - first_word], 0);
 705                 if (ret < 0) {
 706                         netdev_err(net, "Failed to read EEPROM at offset 0x%02x.\n", last_word);
 707                         goto free;
 708                 }
 709         }
 710
 711         memcpy((u8 *)eeprom_buff + (eeprom->offset & 1), data, eeprom->len);
 712
 713         /* write data to EEPROM */
 714         ret = asix_write_cmd(dev, AX_CMD_WRITE_ENABLE, 0x0000, 0, 0, NULL, 0);
 715         if (ret < 0) {
 716                 netdev_err(net, "Failed to enable EEPROM write\n");
 717                 goto free;
 718         }
 719         msleep(20);
 720
 721         for (i = first_word; i <= last_word; i++) {
 722                 netdev_dbg(net, "write to EEPROM at offset 0x%02x, data 0x%04x\n",
 723                            i, eeprom_buff[i - first_word]);
 724                 ret = asix_write_cmd(dev, AX_CMD_WRITE_EEPROM, i,
 725                                      eeprom_buff[i - first_word], 0, NULL, 0);
 726                 if (ret < 0) {
 727                         netdev_err(net, "Failed to write EEPROM at offset 0x%02x.\n",
 728                                    i);
 729                         goto free;
 730                 }
 731                 msleep(20);
 732         }
 733
 734         ret = asix_write_cmd(dev, AX_CMD_WRITE_DISABLE, 0x0000, 0, 0, NULL, 0);
 735         if (ret < 0) {
 736                 netdev_err(net, "Failed to disable EEPROM write\n");
 737                 goto free;
 738         }
 739
 740         ret = 0;
 741 free:
 742         kfree(eeprom_buff);
 743         return ret;
 744 }
 745
 746 void asix_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *info)
 747 {
 748         /* Inherit standard device info */
 749         usbnet_get_drvinfo(net, info);
 750         strlcpy(info->driver, DRIVER_NAME, sizeof(info->driver));
 751         strlcpy(info->version, DRIVER_VERSION, sizeof(info->version));
 752 }
 753
 754 int asix_set_mac_address(struct net_device *net, void *p)
 755 {
 756         struct usbnet *dev = netdev_priv(net);
 757         struct asix_data *data = (struct asix_data *)&dev->data;
 758         struct sockaddr *addr = p;
 759
 760         if (netif_running(net))
 761                 return -EBUSY;
 762         if (!is_valid_ether_addr(addr->sa_data))
 763                 return -EADDRNOTAVAIL;
 764
 765         memcpy(net->dev_addr, addr->sa_data, ETH_ALEN);
 766
 767         /* We use the 20 byte dev->data
 768          * for our 6 byte mac buffer
 769          * to avoid allocating memory that
 770          * is tricky to free later */
 771         memcpy(data->mac_addr, addr->sa_data, ETH_ALEN);
 772         asix_write_cmd_async(dev, AX_CMD_WRITE_NODE_ID, 0, 0, ETH_ALEN,
 773                                                         data->mac_addr);
 774
 775         return 0;
 776 }