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.
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, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 int asix_read_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
29 ret = usbnet_read_cmd(dev, cmd,
30 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
31 value, index, data, size);
33 if (ret != size && ret >= 0)
38 int asix_write_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
41 return usbnet_write_cmd(dev, cmd,
42 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
43 value, index, data, size);
46 void asix_write_cmd_async(struct usbnet *dev, u8 cmd, u16 value, u16 index,
49 usbnet_write_cmd_async(dev, cmd,
50 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
51 value, index, data, size);
54 int asix_rx_fixup_internal(struct usbnet *dev, struct sk_buff *skb,
55 struct asix_rx_fixup_info *rx)
59 while (offset + sizeof(u16) <= skb->len) {
64 if ((skb->len - offset == sizeof(u16)) ||
67 rx->header = get_unaligned_le16(
69 rx->split_head = true;
70 offset += sizeof(u16);
73 rx->header |= (get_unaligned_le16(
76 rx->split_head = false;
77 offset += sizeof(u16);
80 rx->header = get_unaligned_le32(skb->data +
82 offset += sizeof(u32);
85 /* get the packet length */
86 rx->size = (u16) (rx->header & 0x7ff);
87 if (rx->size != ((~rx->header >> 16) & 0x7ff)) {
88 netdev_err(dev->net, "asix_rx_fixup() Bad Header Length 0x%x, offset %d\n",
93 rx->ax_skb = netdev_alloc_skb_ip_align(dev->net,
99 if (rx->size > dev->net->mtu + ETH_HLEN + VLAN_HLEN) {
100 netdev_err(dev->net, "asix_rx_fixup() Bad RX Length %d\n",
102 kfree_skb(rx->ax_skb);
109 if (rx->size > skb->len - offset) {
110 remaining = rx->size - (skb->len - offset);
111 rx->size = skb->len - offset;
116 netdev_err(dev->net, "asix_rx_fixup_internal Bad ax_skb buf.\n");
120 data = skb_put(rx->ax_skb, rx->size);
121 memcpy(data, skb->data + offset, rx->size);
123 usbnet_skb_return(dev, rx->ax_skb);
125 offset += (rx->size + 1) & 0xfffe;
126 rx->size = remaining;
129 if (skb->len != offset) {
130 netdev_err(dev->net, "asix_rx_fixup() Bad SKB Length %d, %d\n",
138 int asix_rx_fixup_common(struct usbnet *dev, struct sk_buff *skb)
140 struct asix_common_private *dp = dev->driver_priv;
141 struct asix_rx_fixup_info *rx = &dp->rx_fixup_info;
143 return asix_rx_fixup_internal(dev, skb, rx);
146 struct sk_buff *asix_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
150 int headroom = skb_headroom(skb);
151 int tailroom = skb_tailroom(skb);
153 u32 padbytes = 0xffff0000;
155 padlen = ((skb->len + 4) & (dev->maxpacket - 1)) ? 0 : 4;
157 /* We need to push 4 bytes in front of frame (packet_len)
158 * and maybe add 4 bytes after the end (if padlen is 4)
160 * Avoid skb_copy_expand() expensive call, using following rules :
161 * - We are allowed to push 4 bytes in headroom if skb_header_cloned()
162 * is false (and if we have 4 bytes of headroom)
163 * - We are allowed to put 4 bytes at tail if skb_cloned()
164 * is false (and if we have 4 bytes of tailroom)
166 * TCP packets for example are cloned, but skb_header_release()
167 * was called in tcp stack, allowing us to use headroom for our needs.
169 if (!skb_header_cloned(skb) &&
170 !(padlen && skb_cloned(skb)) &&
171 headroom + tailroom >= 4 + padlen) {
172 /* following should not happen, but better be safe */
175 skb->data = memmove(skb->head + 4, skb->data, skb->len);
176 skb_set_tail_pointer(skb, skb->len);
179 struct sk_buff *skb2;
181 skb2 = skb_copy_expand(skb, 4, padlen, flags);
182 dev_kfree_skb_any(skb);
188 packet_len = ((skb->len ^ 0x0000ffff) << 16) + skb->len;
190 cpu_to_le32s(&packet_len);
191 skb_copy_to_linear_data(skb, &packet_len, sizeof(packet_len));
194 cpu_to_le32s(&padbytes);
195 memcpy(skb_tail_pointer(skb), &padbytes, sizeof(padbytes));
196 skb_put(skb, sizeof(padbytes));
201 int asix_set_sw_mii(struct usbnet *dev)
204 ret = asix_write_cmd(dev, AX_CMD_SET_SW_MII, 0x0000, 0, 0, NULL);
206 netdev_err(dev->net, "Failed to enable software MII access\n");
210 int asix_set_hw_mii(struct usbnet *dev)
213 ret = asix_write_cmd(dev, AX_CMD_SET_HW_MII, 0x0000, 0, 0, NULL);
215 netdev_err(dev->net, "Failed to enable hardware MII access\n");
219 int asix_read_phy_addr(struct usbnet *dev, int internal)
221 int offset = (internal ? 1 : 0);
223 int ret = asix_read_cmd(dev, AX_CMD_READ_PHY_ID, 0, 0, 2, buf);
225 netdev_dbg(dev->net, "asix_get_phy_addr()\n");
228 netdev_err(dev->net, "Error reading PHYID register: %02x\n", ret);
231 netdev_dbg(dev->net, "asix_get_phy_addr() returning 0x%04x\n",
239 int asix_get_phy_addr(struct usbnet *dev)
241 /* return the address of the internal phy */
242 return asix_read_phy_addr(dev, 1);
246 int asix_sw_reset(struct usbnet *dev, u8 flags)
250 ret = asix_write_cmd(dev, AX_CMD_SW_RESET, flags, 0, 0, NULL);
252 netdev_err(dev->net, "Failed to send software reset: %02x\n", ret);
257 u16 asix_read_rx_ctl(struct usbnet *dev)
260 int ret = asix_read_cmd(dev, AX_CMD_READ_RX_CTL, 0, 0, 2, &v);
263 netdev_err(dev->net, "Error reading RX_CTL register: %02x\n", ret);
266 ret = le16_to_cpu(v);
271 int asix_write_rx_ctl(struct usbnet *dev, u16 mode)
275 netdev_dbg(dev->net, "asix_write_rx_ctl() - mode = 0x%04x\n", mode);
276 ret = asix_write_cmd(dev, AX_CMD_WRITE_RX_CTL, mode, 0, 0, NULL);
278 netdev_err(dev->net, "Failed to write RX_CTL mode to 0x%04x: %02x\n",
284 u16 asix_read_medium_status(struct usbnet *dev)
287 int ret = asix_read_cmd(dev, AX_CMD_READ_MEDIUM_STATUS, 0, 0, 2, &v);
290 netdev_err(dev->net, "Error reading Medium Status register: %02x\n",
292 return ret; /* TODO: callers not checking for error ret */
295 return le16_to_cpu(v);
299 int asix_write_medium_mode(struct usbnet *dev, u16 mode)
303 netdev_dbg(dev->net, "asix_write_medium_mode() - mode = 0x%04x\n", mode);
304 ret = asix_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE, mode, 0, 0, NULL);
306 netdev_err(dev->net, "Failed to write Medium Mode mode to 0x%04x: %02x\n",
312 int asix_write_gpio(struct usbnet *dev, u16 value, int sleep)
316 netdev_dbg(dev->net, "asix_write_gpio() - value = 0x%04x\n", value);
317 ret = asix_write_cmd(dev, AX_CMD_WRITE_GPIOS, value, 0, 0, NULL);
319 netdev_err(dev->net, "Failed to write GPIO value 0x%04x: %02x\n",
329 * AX88772 & AX88178 have a 16-bit RX_CTL value
331 void asix_set_multicast(struct net_device *net)
333 struct usbnet *dev = netdev_priv(net);
334 struct asix_data *data = (struct asix_data *)&dev->data;
335 u16 rx_ctl = AX_DEFAULT_RX_CTL;
337 if (net->flags & IFF_PROMISC) {
338 rx_ctl |= AX_RX_CTL_PRO;
339 } else if (net->flags & IFF_ALLMULTI ||
340 netdev_mc_count(net) > AX_MAX_MCAST) {
341 rx_ctl |= AX_RX_CTL_AMALL;
342 } else if (netdev_mc_empty(net)) {
343 /* just broadcast and directed */
345 /* We use the 20 byte dev->data
346 * for our 8 byte filter buffer
347 * to avoid allocating memory that
348 * is tricky to free later */
349 struct netdev_hw_addr *ha;
352 memset(data->multi_filter, 0, AX_MCAST_FILTER_SIZE);
354 /* Build the multicast hash filter. */
355 netdev_for_each_mc_addr(ha, net) {
356 crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26;
357 data->multi_filter[crc_bits >> 3] |=
361 asix_write_cmd_async(dev, AX_CMD_WRITE_MULTI_FILTER, 0, 0,
362 AX_MCAST_FILTER_SIZE, data->multi_filter);
364 rx_ctl |= AX_RX_CTL_AM;
367 asix_write_cmd_async(dev, AX_CMD_WRITE_RX_CTL, rx_ctl, 0, 0, NULL);
370 int asix_mdio_read(struct net_device *netdev, int phy_id, int loc)
372 struct usbnet *dev = netdev_priv(netdev);
375 mutex_lock(&dev->phy_mutex);
376 asix_set_sw_mii(dev);
377 asix_read_cmd(dev, AX_CMD_READ_MII_REG, phy_id,
378 (__u16)loc, 2, &res);
379 asix_set_hw_mii(dev);
380 mutex_unlock(&dev->phy_mutex);
382 netdev_dbg(dev->net, "asix_mdio_read() phy_id=0x%02x, loc=0x%02x, returns=0x%04x\n",
383 phy_id, loc, le16_to_cpu(res));
385 return le16_to_cpu(res);
388 void asix_mdio_write(struct net_device *netdev, int phy_id, int loc, int val)
390 struct usbnet *dev = netdev_priv(netdev);
391 __le16 res = cpu_to_le16(val);
393 netdev_dbg(dev->net, "asix_mdio_write() phy_id=0x%02x, loc=0x%02x, val=0x%04x\n",
395 mutex_lock(&dev->phy_mutex);
396 asix_set_sw_mii(dev);
397 asix_write_cmd(dev, AX_CMD_WRITE_MII_REG, phy_id, (__u16)loc, 2, &res);
398 asix_set_hw_mii(dev);
399 mutex_unlock(&dev->phy_mutex);
402 void asix_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
404 struct usbnet *dev = netdev_priv(net);
407 if (asix_read_cmd(dev, AX_CMD_READ_MONITOR_MODE, 0, 0, 1, &opt) < 0) {
408 wolinfo->supported = 0;
409 wolinfo->wolopts = 0;
412 wolinfo->supported = WAKE_PHY | WAKE_MAGIC;
413 wolinfo->wolopts = 0;
414 if (opt & AX_MONITOR_LINK)
415 wolinfo->wolopts |= WAKE_PHY;
416 if (opt & AX_MONITOR_MAGIC)
417 wolinfo->wolopts |= WAKE_MAGIC;
420 int asix_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
422 struct usbnet *dev = netdev_priv(net);
425 if (wolinfo->wolopts & WAKE_PHY)
426 opt |= AX_MONITOR_LINK;
427 if (wolinfo->wolopts & WAKE_MAGIC)
428 opt |= AX_MONITOR_MAGIC;
430 if (asix_write_cmd(dev, AX_CMD_WRITE_MONITOR_MODE,
431 opt, 0, 0, NULL) < 0)
437 int asix_get_eeprom_len(struct net_device *net)
439 return AX_EEPROM_LEN;
442 int asix_get_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom,
445 struct usbnet *dev = netdev_priv(net);
447 int first_word, last_word;
450 if (eeprom->len == 0)
453 eeprom->magic = AX_EEPROM_MAGIC;
455 first_word = eeprom->offset >> 1;
456 last_word = (eeprom->offset + eeprom->len - 1) >> 1;
458 eeprom_buff = kmalloc(sizeof(u16) * (last_word - first_word + 1),
463 /* ax8817x returns 2 bytes from eeprom on read */
464 for (i = first_word; i <= last_word; i++) {
465 if (asix_read_cmd(dev, AX_CMD_READ_EEPROM, i, 0, 2,
466 &(eeprom_buff[i - first_word])) < 0) {
472 memcpy(data, (u8 *)eeprom_buff + (eeprom->offset & 1), eeprom->len);
477 int asix_set_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom,
480 struct usbnet *dev = netdev_priv(net);
482 int first_word, last_word;
486 netdev_dbg(net, "write EEPROM len %d, offset %d, magic 0x%x\n",
487 eeprom->len, eeprom->offset, eeprom->magic);
489 if (eeprom->len == 0)
492 if (eeprom->magic != AX_EEPROM_MAGIC)
495 first_word = eeprom->offset >> 1;
496 last_word = (eeprom->offset + eeprom->len - 1) >> 1;
498 eeprom_buff = kmalloc(sizeof(u16) * (last_word - first_word + 1),
503 /* align data to 16 bit boundaries, read the missing data from
505 if (eeprom->offset & 1) {
506 ret = asix_read_cmd(dev, AX_CMD_READ_EEPROM, first_word, 0, 2,
509 netdev_err(net, "Failed to read EEPROM at offset 0x%02x.\n", first_word);
514 if ((eeprom->offset + eeprom->len) & 1) {
515 ret = asix_read_cmd(dev, AX_CMD_READ_EEPROM, last_word, 0, 2,
516 &(eeprom_buff[last_word - first_word]));
518 netdev_err(net, "Failed to read EEPROM at offset 0x%02x.\n", last_word);
523 memcpy((u8 *)eeprom_buff + (eeprom->offset & 1), data, eeprom->len);
525 /* write data to EEPROM */
526 ret = asix_write_cmd(dev, AX_CMD_WRITE_ENABLE, 0x0000, 0, 0, NULL);
528 netdev_err(net, "Failed to enable EEPROM write\n");
533 for (i = first_word; i <= last_word; i++) {
534 netdev_dbg(net, "write to EEPROM at offset 0x%02x, data 0x%04x\n",
535 i, eeprom_buff[i - first_word]);
536 ret = asix_write_cmd(dev, AX_CMD_WRITE_EEPROM, i,
537 eeprom_buff[i - first_word], 0, NULL);
539 netdev_err(net, "Failed to write EEPROM at offset 0x%02x.\n",
546 ret = asix_write_cmd(dev, AX_CMD_WRITE_DISABLE, 0x0000, 0, 0, NULL);
548 netdev_err(net, "Failed to disable EEPROM write\n");
558 void asix_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *info)
560 /* Inherit standard device info */
561 usbnet_get_drvinfo(net, info);
562 strlcpy(info->driver, DRIVER_NAME, sizeof(info->driver));
563 strlcpy(info->version, DRIVER_VERSION, sizeof(info->version));
564 info->eedump_len = AX_EEPROM_LEN;
567 int asix_set_mac_address(struct net_device *net, void *p)
569 struct usbnet *dev = netdev_priv(net);
570 struct asix_data *data = (struct asix_data *)&dev->data;
571 struct sockaddr *addr = p;
573 if (netif_running(net))
575 if (!is_valid_ether_addr(addr->sa_data))
576 return -EADDRNOTAVAIL;
578 memcpy(net->dev_addr, addr->sa_data, ETH_ALEN);
580 /* We use the 20 byte dev->data
581 * for our 6 byte mac buffer
582 * to avoid allocating memory that
583 * is tricky to free later */
584 memcpy(data->mac_addr, addr->sa_data, ETH_ALEN);
585 asix_write_cmd_async(dev, AX_CMD_WRITE_NODE_ID, 0, 0, ETH_ALEN,