2 * ASIX AX8817X based USB 2.0 Ethernet Devices
6 * Copyright (c) 2002-2003 TiVo Inc.
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.
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.
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/>.
24 int asix_read_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
28 ret = usbnet_read_cmd(dev, cmd,
29 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
30 value, index, data, size);
32 if (ret != size && ret >= 0)
37 int asix_write_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
40 return usbnet_write_cmd(dev, cmd,
41 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
42 value, index, data, size);
45 void asix_write_cmd_async(struct usbnet *dev, u8 cmd, u16 value, u16 index,
48 usbnet_write_cmd_async(dev, cmd,
49 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
50 value, index, data, size);
53 int asix_rx_fixup_internal(struct usbnet *dev, struct sk_buff *skb,
54 struct asix_rx_fixup_info *rx)
58 while (offset + sizeof(u16) <= skb->len) {
63 if ((skb->len - offset == sizeof(u16)) ||
66 rx->header = get_unaligned_le16(
68 rx->split_head = true;
69 offset += sizeof(u16);
72 rx->header |= (get_unaligned_le16(
75 rx->split_head = false;
76 offset += sizeof(u16);
79 rx->header = get_unaligned_le32(skb->data +
81 offset += sizeof(u32);
84 /* get the packet length */
85 rx->size = (u16) (rx->header & 0x7ff);
86 if (rx->size != ((~rx->header >> 16) & 0x7ff)) {
87 netdev_err(dev->net, "asix_rx_fixup() Bad Header Length 0x%x, offset %d\n",
92 rx->ax_skb = netdev_alloc_skb_ip_align(dev->net,
98 if (rx->size > dev->net->mtu + ETH_HLEN + VLAN_HLEN) {
99 netdev_err(dev->net, "asix_rx_fixup() Bad RX Length %d\n",
101 kfree_skb(rx->ax_skb);
108 if (rx->size > skb->len - offset) {
109 remaining = rx->size - (skb->len - offset);
110 rx->size = skb->len - offset;
113 data = skb_put(rx->ax_skb, rx->size);
114 memcpy(data, skb->data + offset, rx->size);
116 usbnet_skb_return(dev, rx->ax_skb);
118 offset += (rx->size + 1) & 0xfffe;
119 rx->size = remaining;
122 if (skb->len != offset) {
123 netdev_err(dev->net, "asix_rx_fixup() Bad SKB Length %d, %d\n",
131 int asix_rx_fixup_common(struct usbnet *dev, struct sk_buff *skb)
133 struct asix_common_private *dp = dev->driver_priv;
134 struct asix_rx_fixup_info *rx = &dp->rx_fixup_info;
136 return asix_rx_fixup_internal(dev, skb, rx);
139 struct sk_buff *asix_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
143 int headroom = skb_headroom(skb);
144 int tailroom = skb_tailroom(skb);
146 u32 padbytes = 0xffff0000;
148 padlen = ((skb->len + 4) & (dev->maxpacket - 1)) ? 0 : 4;
150 /* We need to push 4 bytes in front of frame (packet_len)
151 * and maybe add 4 bytes after the end (if padlen is 4)
153 * Avoid skb_copy_expand() expensive call, using following rules :
154 * - We are allowed to push 4 bytes in headroom if skb_header_cloned()
155 * is false (and if we have 4 bytes of headroom)
156 * - We are allowed to put 4 bytes at tail if skb_cloned()
157 * is false (and if we have 4 bytes of tailroom)
159 * TCP packets for example are cloned, but skb_header_release()
160 * was called in tcp stack, allowing us to use headroom for our needs.
162 if (!skb_header_cloned(skb) &&
163 !(padlen && skb_cloned(skb)) &&
164 headroom + tailroom >= 4 + padlen) {
165 /* following should not happen, but better be safe */
168 skb->data = memmove(skb->head + 4, skb->data, skb->len);
169 skb_set_tail_pointer(skb, skb->len);
172 struct sk_buff *skb2;
174 skb2 = skb_copy_expand(skb, 4, padlen, flags);
175 dev_kfree_skb_any(skb);
181 packet_len = ((skb->len ^ 0x0000ffff) << 16) + skb->len;
183 cpu_to_le32s(&packet_len);
184 skb_copy_to_linear_data(skb, &packet_len, sizeof(packet_len));
187 cpu_to_le32s(&padbytes);
188 memcpy(skb_tail_pointer(skb), &padbytes, sizeof(padbytes));
189 skb_put(skb, sizeof(padbytes));
192 usbnet_set_skb_tx_stats(skb, 1, 0);
196 int asix_set_sw_mii(struct usbnet *dev)
199 ret = asix_write_cmd(dev, AX_CMD_SET_SW_MII, 0x0000, 0, 0, NULL);
201 netdev_err(dev->net, "Failed to enable software MII access\n");
205 int asix_set_hw_mii(struct usbnet *dev)
208 ret = asix_write_cmd(dev, AX_CMD_SET_HW_MII, 0x0000, 0, 0, NULL);
210 netdev_err(dev->net, "Failed to enable hardware MII access\n");
214 int asix_read_phy_addr(struct usbnet *dev, int internal)
216 int offset = (internal ? 1 : 0);
218 int ret = asix_read_cmd(dev, AX_CMD_READ_PHY_ID, 0, 0, 2, buf);
220 netdev_dbg(dev->net, "asix_get_phy_addr()\n");
223 netdev_err(dev->net, "Error reading PHYID register: %02x\n", ret);
226 netdev_dbg(dev->net, "asix_get_phy_addr() returning 0x%04x\n",
234 int asix_get_phy_addr(struct usbnet *dev)
236 /* return the address of the internal phy */
237 return asix_read_phy_addr(dev, 1);
241 int asix_sw_reset(struct usbnet *dev, u8 flags)
245 ret = asix_write_cmd(dev, AX_CMD_SW_RESET, flags, 0, 0, NULL);
247 netdev_err(dev->net, "Failed to send software reset: %02x\n", ret);
252 u16 asix_read_rx_ctl(struct usbnet *dev)
255 int ret = asix_read_cmd(dev, AX_CMD_READ_RX_CTL, 0, 0, 2, &v);
258 netdev_err(dev->net, "Error reading RX_CTL register: %02x\n", ret);
261 ret = le16_to_cpu(v);
266 int asix_write_rx_ctl(struct usbnet *dev, u16 mode)
270 netdev_dbg(dev->net, "asix_write_rx_ctl() - mode = 0x%04x\n", mode);
271 ret = asix_write_cmd(dev, AX_CMD_WRITE_RX_CTL, mode, 0, 0, NULL);
273 netdev_err(dev->net, "Failed to write RX_CTL mode to 0x%04x: %02x\n",
279 u16 asix_read_medium_status(struct usbnet *dev)
282 int ret = asix_read_cmd(dev, AX_CMD_READ_MEDIUM_STATUS, 0, 0, 2, &v);
285 netdev_err(dev->net, "Error reading Medium Status register: %02x\n",
287 return ret; /* TODO: callers not checking for error ret */
290 return le16_to_cpu(v);
294 int asix_write_medium_mode(struct usbnet *dev, u16 mode)
298 netdev_dbg(dev->net, "asix_write_medium_mode() - mode = 0x%04x\n", mode);
299 ret = asix_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE, mode, 0, 0, NULL);
301 netdev_err(dev->net, "Failed to write Medium Mode mode to 0x%04x: %02x\n",
307 int asix_write_gpio(struct usbnet *dev, u16 value, int sleep)
311 netdev_dbg(dev->net, "asix_write_gpio() - value = 0x%04x\n", value);
312 ret = asix_write_cmd(dev, AX_CMD_WRITE_GPIOS, value, 0, 0, NULL);
314 netdev_err(dev->net, "Failed to write GPIO value 0x%04x: %02x\n",
324 * AX88772 & AX88178 have a 16-bit RX_CTL value
326 void asix_set_multicast(struct net_device *net)
328 struct usbnet *dev = netdev_priv(net);
329 struct asix_data *data = (struct asix_data *)&dev->data;
330 u16 rx_ctl = AX_DEFAULT_RX_CTL;
332 if (net->flags & IFF_PROMISC) {
333 rx_ctl |= AX_RX_CTL_PRO;
334 } else if (net->flags & IFF_ALLMULTI ||
335 netdev_mc_count(net) > AX_MAX_MCAST) {
336 rx_ctl |= AX_RX_CTL_AMALL;
337 } else if (netdev_mc_empty(net)) {
338 /* just broadcast and directed */
340 /* We use the 20 byte dev->data
341 * for our 8 byte filter buffer
342 * to avoid allocating memory that
343 * is tricky to free later */
344 struct netdev_hw_addr *ha;
347 memset(data->multi_filter, 0, AX_MCAST_FILTER_SIZE);
349 /* Build the multicast hash filter. */
350 netdev_for_each_mc_addr(ha, net) {
351 crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26;
352 data->multi_filter[crc_bits >> 3] |=
356 asix_write_cmd_async(dev, AX_CMD_WRITE_MULTI_FILTER, 0, 0,
357 AX_MCAST_FILTER_SIZE, data->multi_filter);
359 rx_ctl |= AX_RX_CTL_AM;
362 asix_write_cmd_async(dev, AX_CMD_WRITE_RX_CTL, rx_ctl, 0, 0, NULL);
365 int asix_mdio_read(struct net_device *netdev, int phy_id, int loc)
367 struct usbnet *dev = netdev_priv(netdev);
370 mutex_lock(&dev->phy_mutex);
371 asix_set_sw_mii(dev);
372 asix_read_cmd(dev, AX_CMD_READ_MII_REG, phy_id,
373 (__u16)loc, 2, &res);
374 asix_set_hw_mii(dev);
375 mutex_unlock(&dev->phy_mutex);
377 netdev_dbg(dev->net, "asix_mdio_read() phy_id=0x%02x, loc=0x%02x, returns=0x%04x\n",
378 phy_id, loc, le16_to_cpu(res));
380 return le16_to_cpu(res);
383 void asix_mdio_write(struct net_device *netdev, int phy_id, int loc, int val)
385 struct usbnet *dev = netdev_priv(netdev);
386 __le16 res = cpu_to_le16(val);
388 netdev_dbg(dev->net, "asix_mdio_write() phy_id=0x%02x, loc=0x%02x, val=0x%04x\n",
390 mutex_lock(&dev->phy_mutex);
391 asix_set_sw_mii(dev);
392 asix_write_cmd(dev, AX_CMD_WRITE_MII_REG, phy_id, (__u16)loc, 2, &res);
393 asix_set_hw_mii(dev);
394 mutex_unlock(&dev->phy_mutex);
397 void asix_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
399 struct usbnet *dev = netdev_priv(net);
402 if (asix_read_cmd(dev, AX_CMD_READ_MONITOR_MODE, 0, 0, 1, &opt) < 0) {
403 wolinfo->supported = 0;
404 wolinfo->wolopts = 0;
407 wolinfo->supported = WAKE_PHY | WAKE_MAGIC;
408 wolinfo->wolopts = 0;
409 if (opt & AX_MONITOR_LINK)
410 wolinfo->wolopts |= WAKE_PHY;
411 if (opt & AX_MONITOR_MAGIC)
412 wolinfo->wolopts |= WAKE_MAGIC;
415 int asix_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
417 struct usbnet *dev = netdev_priv(net);
420 if (wolinfo->wolopts & WAKE_PHY)
421 opt |= AX_MONITOR_LINK;
422 if (wolinfo->wolopts & WAKE_MAGIC)
423 opt |= AX_MONITOR_MAGIC;
425 if (asix_write_cmd(dev, AX_CMD_WRITE_MONITOR_MODE,
426 opt, 0, 0, NULL) < 0)
432 int asix_get_eeprom_len(struct net_device *net)
434 return AX_EEPROM_LEN;
437 int asix_get_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom,
440 struct usbnet *dev = netdev_priv(net);
442 int first_word, last_word;
445 if (eeprom->len == 0)
448 eeprom->magic = AX_EEPROM_MAGIC;
450 first_word = eeprom->offset >> 1;
451 last_word = (eeprom->offset + eeprom->len - 1) >> 1;
453 eeprom_buff = kmalloc(sizeof(u16) * (last_word - first_word + 1),
458 /* ax8817x returns 2 bytes from eeprom on read */
459 for (i = first_word; i <= last_word; i++) {
460 if (asix_read_cmd(dev, AX_CMD_READ_EEPROM, i, 0, 2,
461 &(eeprom_buff[i - first_word])) < 0) {
467 memcpy(data, (u8 *)eeprom_buff + (eeprom->offset & 1), eeprom->len);
472 int asix_set_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom,
475 struct usbnet *dev = netdev_priv(net);
477 int first_word, last_word;
481 netdev_dbg(net, "write EEPROM len %d, offset %d, magic 0x%x\n",
482 eeprom->len, eeprom->offset, eeprom->magic);
484 if (eeprom->len == 0)
487 if (eeprom->magic != AX_EEPROM_MAGIC)
490 first_word = eeprom->offset >> 1;
491 last_word = (eeprom->offset + eeprom->len - 1) >> 1;
493 eeprom_buff = kmalloc(sizeof(u16) * (last_word - first_word + 1),
498 /* align data to 16 bit boundaries, read the missing data from
500 if (eeprom->offset & 1) {
501 ret = asix_read_cmd(dev, AX_CMD_READ_EEPROM, first_word, 0, 2,
504 netdev_err(net, "Failed to read EEPROM at offset 0x%02x.\n", first_word);
509 if ((eeprom->offset + eeprom->len) & 1) {
510 ret = asix_read_cmd(dev, AX_CMD_READ_EEPROM, last_word, 0, 2,
511 &(eeprom_buff[last_word - first_word]));
513 netdev_err(net, "Failed to read EEPROM at offset 0x%02x.\n", last_word);
518 memcpy((u8 *)eeprom_buff + (eeprom->offset & 1), data, eeprom->len);
520 /* write data to EEPROM */
521 ret = asix_write_cmd(dev, AX_CMD_WRITE_ENABLE, 0x0000, 0, 0, NULL);
523 netdev_err(net, "Failed to enable EEPROM write\n");
528 for (i = first_word; i <= last_word; i++) {
529 netdev_dbg(net, "write to EEPROM at offset 0x%02x, data 0x%04x\n",
530 i, eeprom_buff[i - first_word]);
531 ret = asix_write_cmd(dev, AX_CMD_WRITE_EEPROM, i,
532 eeprom_buff[i - first_word], 0, NULL);
534 netdev_err(net, "Failed to write EEPROM at offset 0x%02x.\n",
541 ret = asix_write_cmd(dev, AX_CMD_WRITE_DISABLE, 0x0000, 0, 0, NULL);
543 netdev_err(net, "Failed to disable EEPROM write\n");
553 void asix_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *info)
555 /* Inherit standard device info */
556 usbnet_get_drvinfo(net, info);
557 strlcpy(info->driver, DRIVER_NAME, sizeof(info->driver));
558 strlcpy(info->version, DRIVER_VERSION, sizeof(info->version));
559 info->eedump_len = AX_EEPROM_LEN;
562 int asix_set_mac_address(struct net_device *net, void *p)
564 struct usbnet *dev = netdev_priv(net);
565 struct asix_data *data = (struct asix_data *)&dev->data;
566 struct sockaddr *addr = p;
568 if (netif_running(net))
570 if (!is_valid_ether_addr(addr->sa_data))
571 return -EADDRNOTAVAIL;
573 memcpy(net->dev_addr, addr->sa_data, ETH_ALEN);
575 /* We use the 20 byte dev->data
576 * for our 6 byte mac buffer
577 * to avoid allocating memory that
578 * is tricky to free later */
579 memcpy(data->mac_addr, addr->sa_data, ETH_ALEN);
580 asix_write_cmd_async(dev, AX_CMD_WRITE_NODE_ID, 0, 0, ETH_ALEN,