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(struct usbnet *dev, struct sk_buff *skb)
58 while (offset + sizeof(u32) < skb->len) {
59 struct sk_buff *ax_skb;
61 u32 header = get_unaligned_le32(skb->data + offset);
63 offset += sizeof(u32);
65 /* get the packet length */
66 size = (u16) (header & 0x7ff);
67 if (size != ((~header >> 16) & 0x07ff)) {
68 netdev_err(dev->net, "asix_rx_fixup() Bad Header Length\n");
72 if ((size > dev->net->mtu + ETH_HLEN + VLAN_HLEN) ||
73 (size + offset > skb->len)) {
74 netdev_err(dev->net, "asix_rx_fixup() Bad RX Length %d\n",
78 ax_skb = netdev_alloc_skb_ip_align(dev->net, size);
82 skb_put(ax_skb, size);
83 memcpy(ax_skb->data, skb->data + offset, size);
84 usbnet_skb_return(dev, ax_skb);
86 offset += (size + 1) & 0xfffe;
89 if (skb->len != offset) {
90 netdev_err(dev->net, "asix_rx_fixup() Bad SKB Length %d\n",
97 struct sk_buff *asix_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
101 int headroom = skb_headroom(skb);
102 int tailroom = skb_tailroom(skb);
104 u32 padbytes = 0xffff0000;
106 padlen = ((skb->len + 4) & (dev->maxpacket - 1)) ? 0 : 4;
108 /* We need to push 4 bytes in front of frame (packet_len)
109 * and maybe add 4 bytes after the end (if padlen is 4)
111 * Avoid skb_copy_expand() expensive call, using following rules :
112 * - We are allowed to push 4 bytes in headroom if skb_header_cloned()
113 * is false (and if we have 4 bytes of headroom)
114 * - We are allowed to put 4 bytes at tail if skb_cloned()
115 * is false (and if we have 4 bytes of tailroom)
117 * TCP packets for example are cloned, but skb_header_release()
118 * was called in tcp stack, allowing us to use headroom for our needs.
120 if (!skb_header_cloned(skb) &&
121 !(padlen && skb_cloned(skb)) &&
122 headroom + tailroom >= 4 + padlen) {
123 /* following should not happen, but better be safe */
126 skb->data = memmove(skb->head + 4, skb->data, skb->len);
127 skb_set_tail_pointer(skb, skb->len);
130 struct sk_buff *skb2;
132 skb2 = skb_copy_expand(skb, 4, padlen, flags);
133 dev_kfree_skb_any(skb);
139 packet_len = ((skb->len ^ 0x0000ffff) << 16) + skb->len;
141 cpu_to_le32s(&packet_len);
142 skb_copy_to_linear_data(skb, &packet_len, sizeof(packet_len));
145 cpu_to_le32s(&padbytes);
146 memcpy(skb_tail_pointer(skb), &padbytes, sizeof(padbytes));
147 skb_put(skb, sizeof(padbytes));
152 int asix_set_sw_mii(struct usbnet *dev)
155 ret = asix_write_cmd(dev, AX_CMD_SET_SW_MII, 0x0000, 0, 0, NULL);
157 netdev_err(dev->net, "Failed to enable software MII access\n");
161 int asix_set_hw_mii(struct usbnet *dev)
164 ret = asix_write_cmd(dev, AX_CMD_SET_HW_MII, 0x0000, 0, 0, NULL);
166 netdev_err(dev->net, "Failed to enable hardware MII access\n");
170 int asix_read_phy_addr(struct usbnet *dev, int internal)
172 int offset = (internal ? 1 : 0);
174 int ret = asix_read_cmd(dev, AX_CMD_READ_PHY_ID, 0, 0, 2, buf);
176 netdev_dbg(dev->net, "asix_get_phy_addr()\n");
179 netdev_err(dev->net, "Error reading PHYID register: %02x\n", ret);
182 netdev_dbg(dev->net, "asix_get_phy_addr() returning 0x%04x\n",
190 int asix_get_phy_addr(struct usbnet *dev)
192 /* return the address of the internal phy */
193 return asix_read_phy_addr(dev, 1);
197 int asix_sw_reset(struct usbnet *dev, u8 flags)
201 ret = asix_write_cmd(dev, AX_CMD_SW_RESET, flags, 0, 0, NULL);
203 netdev_err(dev->net, "Failed to send software reset: %02x\n", ret);
208 u16 asix_read_rx_ctl(struct usbnet *dev)
211 int ret = asix_read_cmd(dev, AX_CMD_READ_RX_CTL, 0, 0, 2, &v);
214 netdev_err(dev->net, "Error reading RX_CTL register: %02x\n", ret);
217 ret = le16_to_cpu(v);
222 int asix_write_rx_ctl(struct usbnet *dev, u16 mode)
226 netdev_dbg(dev->net, "asix_write_rx_ctl() - mode = 0x%04x\n", mode);
227 ret = asix_write_cmd(dev, AX_CMD_WRITE_RX_CTL, mode, 0, 0, NULL);
229 netdev_err(dev->net, "Failed to write RX_CTL mode to 0x%04x: %02x\n",
235 u16 asix_read_medium_status(struct usbnet *dev)
238 int ret = asix_read_cmd(dev, AX_CMD_READ_MEDIUM_STATUS, 0, 0, 2, &v);
241 netdev_err(dev->net, "Error reading Medium Status register: %02x\n",
243 return ret; /* TODO: callers not checking for error ret */
246 return le16_to_cpu(v);
250 int asix_write_medium_mode(struct usbnet *dev, u16 mode)
254 netdev_dbg(dev->net, "asix_write_medium_mode() - mode = 0x%04x\n", mode);
255 ret = asix_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE, mode, 0, 0, NULL);
257 netdev_err(dev->net, "Failed to write Medium Mode mode to 0x%04x: %02x\n",
263 int asix_write_gpio(struct usbnet *dev, u16 value, int sleep)
267 netdev_dbg(dev->net, "asix_write_gpio() - value = 0x%04x\n", value);
268 ret = asix_write_cmd(dev, AX_CMD_WRITE_GPIOS, value, 0, 0, NULL);
270 netdev_err(dev->net, "Failed to write GPIO value 0x%04x: %02x\n",
280 * AX88772 & AX88178 have a 16-bit RX_CTL value
282 void asix_set_multicast(struct net_device *net)
284 struct usbnet *dev = netdev_priv(net);
285 struct asix_data *data = (struct asix_data *)&dev->data;
286 u16 rx_ctl = AX_DEFAULT_RX_CTL;
288 if (net->flags & IFF_PROMISC) {
289 rx_ctl |= AX_RX_CTL_PRO;
290 } else if (net->flags & IFF_ALLMULTI ||
291 netdev_mc_count(net) > AX_MAX_MCAST) {
292 rx_ctl |= AX_RX_CTL_AMALL;
293 } else if (netdev_mc_empty(net)) {
294 /* just broadcast and directed */
296 /* We use the 20 byte dev->data
297 * for our 8 byte filter buffer
298 * to avoid allocating memory that
299 * is tricky to free later */
300 struct netdev_hw_addr *ha;
303 memset(data->multi_filter, 0, AX_MCAST_FILTER_SIZE);
305 /* Build the multicast hash filter. */
306 netdev_for_each_mc_addr(ha, net) {
307 crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26;
308 data->multi_filter[crc_bits >> 3] |=
312 asix_write_cmd_async(dev, AX_CMD_WRITE_MULTI_FILTER, 0, 0,
313 AX_MCAST_FILTER_SIZE, data->multi_filter);
315 rx_ctl |= AX_RX_CTL_AM;
318 asix_write_cmd_async(dev, AX_CMD_WRITE_RX_CTL, rx_ctl, 0, 0, NULL);
321 int asix_mdio_read(struct net_device *netdev, int phy_id, int loc)
323 struct usbnet *dev = netdev_priv(netdev);
326 mutex_lock(&dev->phy_mutex);
327 asix_set_sw_mii(dev);
328 asix_read_cmd(dev, AX_CMD_READ_MII_REG, phy_id,
329 (__u16)loc, 2, &res);
330 asix_set_hw_mii(dev);
331 mutex_unlock(&dev->phy_mutex);
333 netdev_dbg(dev->net, "asix_mdio_read() phy_id=0x%02x, loc=0x%02x, returns=0x%04x\n",
334 phy_id, loc, le16_to_cpu(res));
336 return le16_to_cpu(res);
339 void asix_mdio_write(struct net_device *netdev, int phy_id, int loc, int val)
341 struct usbnet *dev = netdev_priv(netdev);
342 __le16 res = cpu_to_le16(val);
344 netdev_dbg(dev->net, "asix_mdio_write() phy_id=0x%02x, loc=0x%02x, val=0x%04x\n",
346 mutex_lock(&dev->phy_mutex);
347 asix_set_sw_mii(dev);
348 asix_write_cmd(dev, AX_CMD_WRITE_MII_REG, phy_id, (__u16)loc, 2, &res);
349 asix_set_hw_mii(dev);
350 mutex_unlock(&dev->phy_mutex);
353 void asix_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
355 struct usbnet *dev = netdev_priv(net);
358 if (asix_read_cmd(dev, AX_CMD_READ_MONITOR_MODE, 0, 0, 1, &opt) < 0) {
359 wolinfo->supported = 0;
360 wolinfo->wolopts = 0;
363 wolinfo->supported = WAKE_PHY | WAKE_MAGIC;
364 wolinfo->wolopts = 0;
365 if (opt & AX_MONITOR_LINK)
366 wolinfo->wolopts |= WAKE_PHY;
367 if (opt & AX_MONITOR_MAGIC)
368 wolinfo->wolopts |= WAKE_MAGIC;
371 int asix_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
373 struct usbnet *dev = netdev_priv(net);
376 if (wolinfo->wolopts & WAKE_PHY)
377 opt |= AX_MONITOR_LINK;
378 if (wolinfo->wolopts & WAKE_MAGIC)
379 opt |= AX_MONITOR_MAGIC;
381 if (asix_write_cmd(dev, AX_CMD_WRITE_MONITOR_MODE,
382 opt, 0, 0, NULL) < 0)
388 int asix_get_eeprom_len(struct net_device *net)
390 return AX_EEPROM_LEN;
393 int asix_get_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom,
396 struct usbnet *dev = netdev_priv(net);
398 int first_word, last_word;
401 if (eeprom->len == 0)
404 eeprom->magic = AX_EEPROM_MAGIC;
406 first_word = eeprom->offset >> 1;
407 last_word = (eeprom->offset + eeprom->len - 1) >> 1;
409 eeprom_buff = kmalloc(sizeof(u16) * (last_word - first_word + 1),
414 /* ax8817x returns 2 bytes from eeprom on read */
415 for (i = first_word; i <= last_word; i++) {
416 if (asix_read_cmd(dev, AX_CMD_READ_EEPROM, i, 0, 2,
417 &(eeprom_buff[i - first_word])) < 0) {
423 memcpy(data, (u8 *)eeprom_buff + (eeprom->offset & 1), eeprom->len);
428 int asix_set_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom,
431 struct usbnet *dev = netdev_priv(net);
433 int first_word, last_word;
437 netdev_dbg(net, "write EEPROM len %d, offset %d, magic 0x%x\n",
438 eeprom->len, eeprom->offset, eeprom->magic);
440 if (eeprom->len == 0)
443 if (eeprom->magic != AX_EEPROM_MAGIC)
446 first_word = eeprom->offset >> 1;
447 last_word = (eeprom->offset + eeprom->len - 1) >> 1;
449 eeprom_buff = kmalloc(sizeof(u16) * (last_word - first_word + 1),
454 /* align data to 16 bit boundaries, read the missing data from
456 if (eeprom->offset & 1) {
457 ret = asix_read_cmd(dev, AX_CMD_READ_EEPROM, first_word, 0, 2,
460 netdev_err(net, "Failed to read EEPROM at offset 0x%02x.\n", first_word);
465 if ((eeprom->offset + eeprom->len) & 1) {
466 ret = asix_read_cmd(dev, AX_CMD_READ_EEPROM, last_word, 0, 2,
467 &(eeprom_buff[last_word - first_word]));
469 netdev_err(net, "Failed to read EEPROM at offset 0x%02x.\n", last_word);
474 memcpy((u8 *)eeprom_buff + (eeprom->offset & 1), data, eeprom->len);
476 /* write data to EEPROM */
477 ret = asix_write_cmd(dev, AX_CMD_WRITE_ENABLE, 0x0000, 0, 0, NULL);
479 netdev_err(net, "Failed to enable EEPROM write\n");
484 for (i = first_word; i <= last_word; i++) {
485 netdev_dbg(net, "write to EEPROM at offset 0x%02x, data 0x%04x\n",
486 i, eeprom_buff[i - first_word]);
487 ret = asix_write_cmd(dev, AX_CMD_WRITE_EEPROM, i,
488 eeprom_buff[i - first_word], 0, NULL);
490 netdev_err(net, "Failed to write EEPROM at offset 0x%02x.\n",
497 ret = asix_write_cmd(dev, AX_CMD_WRITE_DISABLE, 0x0000, 0, 0, NULL);
499 netdev_err(net, "Failed to disable EEPROM write\n");
509 void asix_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *info)
511 /* Inherit standard device info */
512 usbnet_get_drvinfo(net, info);
513 strncpy (info->driver, DRIVER_NAME, sizeof info->driver);
514 strncpy (info->version, DRIVER_VERSION, sizeof info->version);
515 info->eedump_len = AX_EEPROM_LEN;
518 int asix_set_mac_address(struct net_device *net, void *p)
520 struct usbnet *dev = netdev_priv(net);
521 struct asix_data *data = (struct asix_data *)&dev->data;
522 struct sockaddr *addr = p;
524 if (netif_running(net))
526 if (!is_valid_ether_addr(addr->sa_data))
527 return -EADDRNOTAVAIL;
529 memcpy(net->dev_addr, addr->sa_data, ETH_ALEN);
531 /* We use the 20 byte dev->data
532 * for our 6 byte mac buffer
533 * to avoid allocating memory that
534 * is tricky to free later */
535 memcpy(data->mac_addr, addr->sa_data, ETH_ALEN);
536 asix_write_cmd_async(dev, AX_CMD_WRITE_NODE_ID, 0, 0, ETH_ALEN,