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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * ASIX AX8817X based USB 2.0 Ethernet Devices4 * Copyright (C) 2003-2006 David Hollis <dhollis@davehollis.com>5 * Copyright (C) 2005 Phil Chang <pchang23@sbcglobal.net>6 * Copyright (C) 2006 James Painter <jamie.painter@iname.com>7 * Copyright (c) 2002-2003 TiVo Inc.8 */9 10#include "asix.h"11 12#define AX_HOST_EN_RETRIES 3013 14int __must_check asix_read_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,15 u16 size, void *data, int in_pm)16{17 int ret;18 int (*fn)(struct usbnet *, u8, u8, u16, u16, void *, u16);19 20 BUG_ON(!dev);21 22 if (!in_pm)23 fn = usbnet_read_cmd;24 else25 fn = usbnet_read_cmd_nopm;26 27 ret = fn(dev, cmd, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,28 value, index, data, size);29 30 if (unlikely(ret < size)) {31 ret = ret < 0 ? ret : -ENODATA;32 33 netdev_warn(dev->net, "Failed to read reg index 0x%04x: %d\n",34 index, ret);35 }36 37 return ret;38}39 40int asix_write_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,41 u16 size, void *data, int in_pm)42{43 int ret;44 int (*fn)(struct usbnet *, u8, u8, u16, u16, const void *, u16);45 46 BUG_ON(!dev);47 48 if (!in_pm)49 fn = usbnet_write_cmd;50 else51 fn = usbnet_write_cmd_nopm;52 53 ret = fn(dev, cmd, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,54 value, index, data, size);55 56 if (unlikely(ret < 0))57 netdev_warn(dev->net, "Failed to write reg index 0x%04x: %d\n",58 index, ret);59 60 return ret;61}62 63void asix_write_cmd_async(struct usbnet *dev, u8 cmd, u16 value, u16 index,64 u16 size, void *data)65{66 usbnet_write_cmd_async(dev, cmd,67 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,68 value, index, data, size);69}70 71static int asix_set_sw_mii(struct usbnet *dev, int in_pm)72{73 int ret;74 75 ret = asix_write_cmd(dev, AX_CMD_SET_SW_MII, 0x0000, 0, 0, NULL, in_pm);76 77 if (ret < 0)78 netdev_err(dev->net, "Failed to enable software MII access\n");79 return ret;80}81 82static int asix_set_hw_mii(struct usbnet *dev, int in_pm)83{84 int ret;85 86 ret = asix_write_cmd(dev, AX_CMD_SET_HW_MII, 0x0000, 0, 0, NULL, in_pm);87 if (ret < 0)88 netdev_err(dev->net, "Failed to enable hardware MII access\n");89 return ret;90}91 92static int asix_check_host_enable(struct usbnet *dev, int in_pm)93{94 int i, ret;95 u8 smsr;96 97 for (i = 0; i < AX_HOST_EN_RETRIES; ++i) {98 ret = asix_set_sw_mii(dev, in_pm);99 if (ret == -ENODEV || ret == -ETIMEDOUT)100 break;101 usleep_range(1000, 1100);102 ret = asix_read_cmd(dev, AX_CMD_STATMNGSTS_REG,103 0, 0, 1, &smsr, in_pm);104 if (ret == -ENODEV)105 break;106 else if (ret < 0)107 continue;108 else if (smsr & AX_HOST_EN)109 break;110 }111 112 return i >= AX_HOST_EN_RETRIES ? -ETIMEDOUT : ret;113}114 115static void reset_asix_rx_fixup_info(struct asix_rx_fixup_info *rx)116{117 /* Reset the variables that have a lifetime outside of118 * asix_rx_fixup_internal() so that future processing starts from a119 * known set of initial conditions.120 */121 122 if (rx->ax_skb) {123 /* Discard any incomplete Ethernet frame in the netdev buffer */124 kfree_skb(rx->ax_skb);125 rx->ax_skb = NULL;126 }127 128 /* Assume the Data header 32-bit word is at the start of the current129 * or next URB socket buffer so reset all the state variables.130 */131 rx->remaining = 0;132 rx->split_head = false;133 rx->header = 0;134}135 136int asix_rx_fixup_internal(struct usbnet *dev, struct sk_buff *skb,137 struct asix_rx_fixup_info *rx)138{139 int offset = 0;140 u16 size;141 142 /* When an Ethernet frame spans multiple URB socket buffers,143 * do a sanity test for the Data header synchronisation.144 * Attempt to detect the situation of the previous socket buffer having145 * been truncated or a socket buffer was missing. These situations146 * cause a discontinuity in the data stream and therefore need to avoid147 * appending bad data to the end of the current netdev socket buffer.148 * Also avoid unnecessarily discarding a good current netdev socket149 * buffer.150 */151 if (rx->remaining && (rx->remaining + sizeof(u32) <= skb->len)) {152 offset = ((rx->remaining + 1) & 0xfffe);153 rx->header = get_unaligned_le32(skb->data + offset);154 offset = 0;155 156 size = (u16)(rx->header & 0x7ff);157 if (size != ((~rx->header >> 16) & 0x7ff)) {158 netdev_err(dev->net, "asix_rx_fixup() Data Header synchronisation was lost, remaining %d\n",159 rx->remaining);160 reset_asix_rx_fixup_info(rx);161 }162 }163 164 while (offset + sizeof(u16) <= skb->len) {165 u16 copy_length;166 167 if (!rx->remaining) {168 if (skb->len - offset == sizeof(u16)) {169 rx->header = get_unaligned_le16(170 skb->data + offset);171 rx->split_head = true;172 offset += sizeof(u16);173 break;174 }175 176 if (rx->split_head == true) {177 rx->header |= (get_unaligned_le16(178 skb->data + offset) << 16);179 rx->split_head = false;180 offset += sizeof(u16);181 } else {182 rx->header = get_unaligned_le32(skb->data +183 offset);184 offset += sizeof(u32);185 }186 187 /* take frame length from Data header 32-bit word */188 size = (u16)(rx->header & 0x7ff);189 if (size != ((~rx->header >> 16) & 0x7ff)) {190 netdev_err(dev->net, "asix_rx_fixup() Bad Header Length 0x%x, offset %d\n",191 rx->header, offset);192 reset_asix_rx_fixup_info(rx);193 return 0;194 }195 if (size > dev->net->mtu + ETH_HLEN + VLAN_HLEN) {196 netdev_dbg(dev->net, "asix_rx_fixup() Bad RX Length %d\n",197 size);198 reset_asix_rx_fixup_info(rx);199 return 0;200 }201 202 /* Sometimes may fail to get a netdev socket buffer but203 * continue to process the URB socket buffer so that204 * synchronisation of the Ethernet frame Data header205 * word is maintained.206 */207 rx->ax_skb = netdev_alloc_skb_ip_align(dev->net, size);208 209 rx->remaining = size;210 }211 212 if (rx->remaining > skb->len - offset) {213 copy_length = skb->len - offset;214 rx->remaining -= copy_length;215 } else {216 copy_length = rx->remaining;217 rx->remaining = 0;218 }219 220 if (rx->ax_skb) {221 skb_put_data(rx->ax_skb, skb->data + offset,222 copy_length);223 if (!rx->remaining) {224 usbnet_skb_return(dev, rx->ax_skb);225 rx->ax_skb = NULL;226 }227 }228 229 offset += (copy_length + 1) & 0xfffe;230 }231 232 if (skb->len != offset) {233 netdev_err(dev->net, "asix_rx_fixup() Bad SKB Length %d, %d\n",234 skb->len, offset);235 reset_asix_rx_fixup_info(rx);236 return 0;237 }238 239 return 1;240}241 242int asix_rx_fixup_common(struct usbnet *dev, struct sk_buff *skb)243{244 struct asix_common_private *dp = dev->driver_priv;245 struct asix_rx_fixup_info *rx = &dp->rx_fixup_info;246 247 return asix_rx_fixup_internal(dev, skb, rx);248}249 250void asix_rx_fixup_common_free(struct asix_common_private *dp)251{252 struct asix_rx_fixup_info *rx;253 254 if (!dp)255 return;256 257 rx = &dp->rx_fixup_info;258 259 if (rx->ax_skb) {260 kfree_skb(rx->ax_skb);261 rx->ax_skb = NULL;262 }263}264 265struct sk_buff *asix_tx_fixup(struct usbnet *dev, struct sk_buff *skb,266 gfp_t flags)267{268 int padlen;269 int headroom = skb_headroom(skb);270 int tailroom = skb_tailroom(skb);271 u32 packet_len;272 u32 padbytes = 0xffff0000;273 void *ptr;274 275 padlen = ((skb->len + 4) & (dev->maxpacket - 1)) ? 0 : 4;276 277 /* We need to push 4 bytes in front of frame (packet_len)278 * and maybe add 4 bytes after the end (if padlen is 4)279 *280 * Avoid skb_copy_expand() expensive call, using following rules :281 * - We are allowed to push 4 bytes in headroom if skb_header_cloned()282 * is false (and if we have 4 bytes of headroom)283 * - We are allowed to put 4 bytes at tail if skb_cloned()284 * is false (and if we have 4 bytes of tailroom)285 *286 * TCP packets for example are cloned, but __skb_header_release()287 * was called in tcp stack, allowing us to use headroom for our needs.288 */289 if (!skb_header_cloned(skb) &&290 !(padlen && skb_cloned(skb)) &&291 headroom + tailroom >= 4 + padlen) {292 /* following should not happen, but better be safe */293 if (headroom < 4 ||294 tailroom < padlen) {295 skb->data = memmove(skb->head + 4, skb->data, skb->len);296 skb_set_tail_pointer(skb, skb->len);297 }298 } else {299 struct sk_buff *skb2;300 301 skb2 = skb_copy_expand(skb, 4, padlen, flags);302 dev_kfree_skb_any(skb);303 skb = skb2;304 if (!skb)305 return NULL;306 }307 308 packet_len = ((skb->len ^ 0x0000ffff) << 16) + skb->len;309 ptr = skb_push(skb, 4);310 put_unaligned_le32(packet_len, ptr);311 312 if (padlen) {313 put_unaligned_le32(padbytes, skb_tail_pointer(skb));314 skb_put(skb, sizeof(padbytes));315 }316 317 usbnet_set_skb_tx_stats(skb, 1, 0);318 return skb;319}320 321int asix_read_phy_addr(struct usbnet *dev, bool internal)322{323 int ret, offset;324 u8 buf[2];325 326 ret = asix_read_cmd(dev, AX_CMD_READ_PHY_ID, 0, 0, 2, buf, 0);327 if (ret < 0)328 goto error;329 330 if (ret < 2) {331 ret = -EIO;332 goto error;333 }334 335 offset = (internal ? 1 : 0);336 ret = buf[offset];337 338 netdev_dbg(dev->net, "%s PHY address 0x%x\n",339 internal ? "internal" : "external", ret);340 341 return ret;342 343error:344 netdev_err(dev->net, "Error reading PHY_ID register: %02x\n", ret);345 346 return ret;347}348 349int asix_sw_reset(struct usbnet *dev, u8 flags, int in_pm)350{351 int ret;352 353 ret = asix_write_cmd(dev, AX_CMD_SW_RESET, flags, 0, 0, NULL, in_pm);354 if (ret < 0)355 netdev_err(dev->net, "Failed to send software reset: %02x\n", ret);356 357 return ret;358}359 360u16 asix_read_rx_ctl(struct usbnet *dev, int in_pm)361{362 __le16 v;363 int ret = asix_read_cmd(dev, AX_CMD_READ_RX_CTL, 0, 0, 2, &v, in_pm);364 365 if (ret < 0) {366 netdev_err(dev->net, "Error reading RX_CTL register: %02x\n", ret);367 goto out;368 }369 ret = le16_to_cpu(v);370out:371 return ret;372}373 374int asix_write_rx_ctl(struct usbnet *dev, u16 mode, int in_pm)375{376 int ret;377 378 netdev_dbg(dev->net, "asix_write_rx_ctl() - mode = 0x%04x\n", mode);379 ret = asix_write_cmd(dev, AX_CMD_WRITE_RX_CTL, mode, 0, 0, NULL, in_pm);380 if (ret < 0)381 netdev_err(dev->net, "Failed to write RX_CTL mode to 0x%04x: %02x\n",382 mode, ret);383 384 return ret;385}386 387u16 asix_read_medium_status(struct usbnet *dev, int in_pm)388{389 __le16 v;390 int ret = asix_read_cmd(dev, AX_CMD_READ_MEDIUM_STATUS,391 0, 0, 2, &v, in_pm);392 393 if (ret < 0) {394 netdev_err(dev->net, "Error reading Medium Status register: %02x\n",395 ret);396 return ret; /* TODO: callers not checking for error ret */397 }398 399 return le16_to_cpu(v);400 401}402 403int asix_write_medium_mode(struct usbnet *dev, u16 mode, int in_pm)404{405 int ret;406 407 netdev_dbg(dev->net, "asix_write_medium_mode() - mode = 0x%04x\n", mode);408 ret = asix_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE,409 mode, 0, 0, NULL, in_pm);410 if (ret < 0)411 netdev_err(dev->net, "Failed to write Medium Mode mode to 0x%04x: %02x\n",412 mode, ret);413 414 return ret;415}416 417/* set MAC link settings according to information from phylib */418void asix_adjust_link(struct net_device *netdev)419{420 struct phy_device *phydev = netdev->phydev;421 struct usbnet *dev = netdev_priv(netdev);422 u16 mode = 0;423 424 if (phydev->link) {425 mode = AX88772_MEDIUM_DEFAULT;426 427 if (phydev->duplex == DUPLEX_HALF)428 mode &= ~AX_MEDIUM_FD;429 430 if (phydev->speed != SPEED_100)431 mode &= ~AX_MEDIUM_PS;432 }433 434 asix_write_medium_mode(dev, mode, 0);435 phy_print_status(phydev);436 usbnet_link_change(dev, phydev->link, 0);437}438 439int asix_write_gpio(struct usbnet *dev, u16 value, int sleep, int in_pm)440{441 int ret;442 443 netdev_dbg(dev->net, "asix_write_gpio() - value = 0x%04x\n", value);444 ret = asix_write_cmd(dev, AX_CMD_WRITE_GPIOS, value, 0, 0, NULL, in_pm);445 if (ret < 0)446 netdev_err(dev->net, "Failed to write GPIO value 0x%04x: %02x\n",447 value, ret);448 449 if (sleep)450 msleep(sleep);451 452 return ret;453}454 455/*456 * AX88772 & AX88178 have a 16-bit RX_CTL value457 */458void asix_set_multicast(struct net_device *net)459{460 struct usbnet *dev = netdev_priv(net);461 struct asix_data *data = (struct asix_data *)&dev->data;462 u16 rx_ctl = AX_DEFAULT_RX_CTL;463 464 if (net->flags & IFF_PROMISC) {465 rx_ctl |= AX_RX_CTL_PRO;466 } else if (net->flags & IFF_ALLMULTI ||467 netdev_mc_count(net) > AX_MAX_MCAST) {468 rx_ctl |= AX_RX_CTL_AMALL;469 } else if (netdev_mc_empty(net)) {470 /* just broadcast and directed */471 } else {472 /* We use the 20 byte dev->data473 * for our 8 byte filter buffer474 * to avoid allocating memory that475 * is tricky to free later */476 struct netdev_hw_addr *ha;477 u32 crc_bits;478 479 memset(data->multi_filter, 0, AX_MCAST_FILTER_SIZE);480 481 /* Build the multicast hash filter. */482 netdev_for_each_mc_addr(ha, net) {483 crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26;484 data->multi_filter[crc_bits >> 3] |=485 1 << (crc_bits & 7);486 }487 488 asix_write_cmd_async(dev, AX_CMD_WRITE_MULTI_FILTER, 0, 0,489 AX_MCAST_FILTER_SIZE, data->multi_filter);490 491 rx_ctl |= AX_RX_CTL_AM;492 }493 494 asix_write_cmd_async(dev, AX_CMD_WRITE_RX_CTL, rx_ctl, 0, 0, NULL);495}496 497static int __asix_mdio_read(struct net_device *netdev, int phy_id, int loc,498 bool in_pm)499{500 struct usbnet *dev = netdev_priv(netdev);501 __le16 res;502 int ret;503 504 mutex_lock(&dev->phy_mutex);505 506 ret = asix_check_host_enable(dev, in_pm);507 if (ret == -ENODEV || ret == -ETIMEDOUT) {508 mutex_unlock(&dev->phy_mutex);509 return ret;510 }511 512 ret = asix_read_cmd(dev, AX_CMD_READ_MII_REG, phy_id, (__u16)loc, 2,513 &res, in_pm);514 if (ret < 0)515 goto out;516 517 ret = asix_set_hw_mii(dev, in_pm);518out:519 mutex_unlock(&dev->phy_mutex);520 521 netdev_dbg(dev->net, "asix_mdio_read() phy_id=0x%02x, loc=0x%02x, returns=0x%04x\n",522 phy_id, loc, le16_to_cpu(res));523 524 return ret < 0 ? ret : le16_to_cpu(res);525}526 527int asix_mdio_read(struct net_device *netdev, int phy_id, int loc)528{529 return __asix_mdio_read(netdev, phy_id, loc, false);530}531 532static int __asix_mdio_write(struct net_device *netdev, int phy_id, int loc,533 int val, bool in_pm)534{535 struct usbnet *dev = netdev_priv(netdev);536 __le16 res = cpu_to_le16(val);537 int ret;538 539 netdev_dbg(dev->net, "asix_mdio_write() phy_id=0x%02x, loc=0x%02x, val=0x%04x\n",540 phy_id, loc, val);541 542 mutex_lock(&dev->phy_mutex);543 544 ret = asix_check_host_enable(dev, in_pm);545 if (ret == -ENODEV)546 goto out;547 548 ret = asix_write_cmd(dev, AX_CMD_WRITE_MII_REG, phy_id, (__u16)loc, 2,549 &res, in_pm);550 if (ret < 0)551 goto out;552 553 ret = asix_set_hw_mii(dev, in_pm);554out:555 mutex_unlock(&dev->phy_mutex);556 557 return ret < 0 ? ret : 0;558}559 560void asix_mdio_write(struct net_device *netdev, int phy_id, int loc, int val)561{562 __asix_mdio_write(netdev, phy_id, loc, val, false);563}564 565/* MDIO read and write wrappers for phylib */566int asix_mdio_bus_read(struct mii_bus *bus, int phy_id, int regnum)567{568 struct usbnet *priv = bus->priv;569 570 return __asix_mdio_read(priv->net, phy_id, regnum, false);571}572 573int asix_mdio_bus_write(struct mii_bus *bus, int phy_id, int regnum, u16 val)574{575 struct usbnet *priv = bus->priv;576 577 return __asix_mdio_write(priv->net, phy_id, regnum, val, false);578}579 580int asix_mdio_read_nopm(struct net_device *netdev, int phy_id, int loc)581{582 return __asix_mdio_read(netdev, phy_id, loc, true);583}584 585void586asix_mdio_write_nopm(struct net_device *netdev, int phy_id, int loc, int val)587{588 __asix_mdio_write(netdev, phy_id, loc, val, true);589}590 591void asix_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)592{593 struct usbnet *dev = netdev_priv(net);594 u8 opt;595 596 if (asix_read_cmd(dev, AX_CMD_READ_MONITOR_MODE,597 0, 0, 1, &opt, 0) < 0) {598 wolinfo->supported = 0;599 wolinfo->wolopts = 0;600 return;601 }602 wolinfo->supported = WAKE_PHY | WAKE_MAGIC;603 wolinfo->wolopts = 0;604 if (opt & AX_MONITOR_LINK)605 wolinfo->wolopts |= WAKE_PHY;606 if (opt & AX_MONITOR_MAGIC)607 wolinfo->wolopts |= WAKE_MAGIC;608}609 610int asix_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)611{612 struct usbnet *dev = netdev_priv(net);613 u8 opt = 0;614 615 if (wolinfo->wolopts & ~(WAKE_PHY | WAKE_MAGIC))616 return -EINVAL;617 618 if (wolinfo->wolopts & WAKE_PHY)619 opt |= AX_MONITOR_LINK;620 if (wolinfo->wolopts & WAKE_MAGIC)621 opt |= AX_MONITOR_MAGIC;622 623 if (asix_write_cmd(dev, AX_CMD_WRITE_MONITOR_MODE,624 opt, 0, 0, NULL, 0) < 0)625 return -EINVAL;626 627 return 0;628}629 630int asix_get_eeprom_len(struct net_device *net)631{632 return AX_EEPROM_LEN;633}634 635int asix_get_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom,636 u8 *data)637{638 struct usbnet *dev = netdev_priv(net);639 u16 *eeprom_buff;640 int first_word, last_word;641 int i;642 643 if (eeprom->len == 0)644 return -EINVAL;645 646 eeprom->magic = AX_EEPROM_MAGIC;647 648 first_word = eeprom->offset >> 1;649 last_word = (eeprom->offset + eeprom->len - 1) >> 1;650 651 eeprom_buff = kmalloc_array(last_word - first_word + 1, sizeof(u16),652 GFP_KERNEL);653 if (!eeprom_buff)654 return -ENOMEM;655 656 /* ax8817x returns 2 bytes from eeprom on read */657 for (i = first_word; i <= last_word; i++) {658 if (asix_read_cmd(dev, AX_CMD_READ_EEPROM, i, 0, 2,659 &eeprom_buff[i - first_word], 0) < 0) {660 kfree(eeprom_buff);661 return -EIO;662 }663 }664 665 memcpy(data, (u8 *)eeprom_buff + (eeprom->offset & 1), eeprom->len);666 kfree(eeprom_buff);667 return 0;668}669 670int asix_set_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom,671 u8 *data)672{673 struct usbnet *dev = netdev_priv(net);674 u16 *eeprom_buff;675 int first_word, last_word;676 int i;677 int ret;678 679 netdev_dbg(net, "write EEPROM len %d, offset %d, magic 0x%x\n",680 eeprom->len, eeprom->offset, eeprom->magic);681 682 if (eeprom->len == 0)683 return -EINVAL;684 685 if (eeprom->magic != AX_EEPROM_MAGIC)686 return -EINVAL;687 688 first_word = eeprom->offset >> 1;689 last_word = (eeprom->offset + eeprom->len - 1) >> 1;690 691 eeprom_buff = kmalloc_array(last_word - first_word + 1, sizeof(u16),692 GFP_KERNEL);693 if (!eeprom_buff)694 return -ENOMEM;695 696 /* align data to 16 bit boundaries, read the missing data from697 the EEPROM */698 if (eeprom->offset & 1) {699 ret = asix_read_cmd(dev, AX_CMD_READ_EEPROM, first_word, 0, 2,700 &eeprom_buff[0], 0);701 if (ret < 0) {702 netdev_err(net, "Failed to read EEPROM at offset 0x%02x.\n", first_word);703 goto free;704 }705 }706 707 if ((eeprom->offset + eeprom->len) & 1) {708 ret = asix_read_cmd(dev, AX_CMD_READ_EEPROM, last_word, 0, 2,709 &eeprom_buff[last_word - first_word], 0);710 if (ret < 0) {711 netdev_err(net, "Failed to read EEPROM at offset 0x%02x.\n", last_word);712 goto free;713 }714 }715 716 memcpy((u8 *)eeprom_buff + (eeprom->offset & 1), data, eeprom->len);717 718 /* write data to EEPROM */719 ret = asix_write_cmd(dev, AX_CMD_WRITE_ENABLE, 0x0000, 0, 0, NULL, 0);720 if (ret < 0) {721 netdev_err(net, "Failed to enable EEPROM write\n");722 goto free;723 }724 msleep(20);725 726 for (i = first_word; i <= last_word; i++) {727 netdev_dbg(net, "write to EEPROM at offset 0x%02x, data 0x%04x\n",728 i, eeprom_buff[i - first_word]);729 ret = asix_write_cmd(dev, AX_CMD_WRITE_EEPROM, i,730 eeprom_buff[i - first_word], 0, NULL, 0);731 if (ret < 0) {732 netdev_err(net, "Failed to write EEPROM at offset 0x%02x.\n",733 i);734 goto free;735 }736 msleep(20);737 }738 739 ret = asix_write_cmd(dev, AX_CMD_WRITE_DISABLE, 0x0000, 0, 0, NULL, 0);740 if (ret < 0) {741 netdev_err(net, "Failed to disable EEPROM write\n");742 goto free;743 }744 745 ret = 0;746free:747 kfree(eeprom_buff);748 return ret;749}750 751void asix_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *info)752{753 /* Inherit standard device info */754 usbnet_get_drvinfo(net, info);755 strscpy(info->driver, DRIVER_NAME, sizeof(info->driver));756 strscpy(info->version, DRIVER_VERSION, sizeof(info->version));757}758 759int asix_set_mac_address(struct net_device *net, void *p)760{761 struct usbnet *dev = netdev_priv(net);762 struct asix_data *data = (struct asix_data *)&dev->data;763 struct sockaddr *addr = p;764 765 if (netif_running(net))766 return -EBUSY;767 if (!is_valid_ether_addr(addr->sa_data))768 return -EADDRNOTAVAIL;769 770 eth_hw_addr_set(net, addr->sa_data);771 772 /* We use the 20 byte dev->data773 * for our 6 byte mac buffer774 * to avoid allocating memory that775 * is tricky to free later */776 memcpy(data->mac_addr, addr->sa_data, ETH_ALEN);777 asix_write_cmd_async(dev, AX_CMD_WRITE_NODE_ID, 0, 0, ETH_ALEN,778 data->mac_addr);779 780 return 0;781}782