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, 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)
59 while (offset + sizeof(u16) <= skb->len) {
64 if (skb->len - offset == sizeof(u16)) {
65 rx->header = get_unaligned_le16(
67 rx->split_head = true;
68 offset += sizeof(u16);
72 if (rx->split_head == true) {
73 rx->header |= (get_unaligned_le16(
74 skb->data + offset) << 16);
75 rx->split_head = false;
76 offset += sizeof(u16);
78 rx->header = get_unaligned_le32(skb->data +
80 offset += sizeof(u32);
83 /* take frame length from Data header 32-bit word */
84 size = (u16)(rx->header & 0x7ff);
85 if (size != ((~rx->header >> 16) & 0x7ff)) {
86 netdev_err(dev->net, "asix_rx_fixup() Bad Header Length 0x%x, offset %d\n",
90 if (size > dev->net->mtu + ETH_HLEN + VLAN_HLEN) {
91 netdev_err(dev->net, "asix_rx_fixup() Bad RX Length %d\n",
96 rx->ax_skb = netdev_alloc_skb_ip_align(dev->net, size);
100 rx->remaining = size;
103 if (rx->remaining > skb->len - offset) {
104 copy_length = skb->len - offset;
105 rx->remaining -= copy_length;
107 copy_length = rx->remaining;
111 data = skb_put(rx->ax_skb, copy_length);
112 memcpy(data, skb->data + offset, copy_length);
114 usbnet_skb_return(dev, rx->ax_skb);
116 offset += (copy_length + 1) & 0xfffe;
119 if (skb->len != offset) {
120 netdev_err(dev->net, "asix_rx_fixup() Bad SKB Length %d, %d\n",
128 int asix_rx_fixup_common(struct usbnet *dev, struct sk_buff *skb)
130 struct asix_common_private *dp = dev->driver_priv;
131 struct asix_rx_fixup_info *rx = &dp->rx_fixup_info;
133 return asix_rx_fixup_internal(dev, skb, rx);
136 struct sk_buff *asix_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
140 int headroom = skb_headroom(skb);
141 int tailroom = skb_tailroom(skb);
143 u32 padbytes = 0xffff0000;
145 padlen = ((skb->len + 4) & (dev->maxpacket - 1)) ? 0 : 4;
147 /* We need to push 4 bytes in front of frame (packet_len)
148 * and maybe add 4 bytes after the end (if padlen is 4)
150 * Avoid skb_copy_expand() expensive call, using following rules :
151 * - We are allowed to push 4 bytes in headroom if skb_header_cloned()
152 * is false (and if we have 4 bytes of headroom)
153 * - We are allowed to put 4 bytes at tail if skb_cloned()
154 * is false (and if we have 4 bytes of tailroom)
156 * TCP packets for example are cloned, but skb_header_release()
157 * was called in tcp stack, allowing us to use headroom for our needs.
159 if (!skb_header_cloned(skb) &&
160 !(padlen && skb_cloned(skb)) &&
161 headroom + tailroom >= 4 + padlen) {
162 /* following should not happen, but better be safe */
165 skb->data = memmove(skb->head + 4, skb->data, skb->len);
166 skb_set_tail_pointer(skb, skb->len);
169 struct sk_buff *skb2;
171 skb2 = skb_copy_expand(skb, 4, padlen, flags);
172 dev_kfree_skb_any(skb);
178 packet_len = ((skb->len ^ 0x0000ffff) << 16) + skb->len;
180 cpu_to_le32s(&packet_len);
181 skb_copy_to_linear_data(skb, &packet_len, sizeof(packet_len));
184 cpu_to_le32s(&padbytes);
185 memcpy(skb_tail_pointer(skb), &padbytes, sizeof(padbytes));
186 skb_put(skb, sizeof(padbytes));
189 usbnet_set_skb_tx_stats(skb, 1, 0);
193 int asix_set_sw_mii(struct usbnet *dev)
196 ret = asix_write_cmd(dev, AX_CMD_SET_SW_MII, 0x0000, 0, 0, NULL);
198 netdev_err(dev->net, "Failed to enable software MII access\n");
202 int asix_set_hw_mii(struct usbnet *dev)
205 ret = asix_write_cmd(dev, AX_CMD_SET_HW_MII, 0x0000, 0, 0, NULL);
207 netdev_err(dev->net, "Failed to enable hardware MII access\n");
211 int asix_read_phy_addr(struct usbnet *dev, int internal)
213 int offset = (internal ? 1 : 0);
215 int ret = asix_read_cmd(dev, AX_CMD_READ_PHY_ID, 0, 0, 2, buf);
217 netdev_dbg(dev->net, "asix_get_phy_addr()\n");
220 netdev_err(dev->net, "Error reading PHYID register: %02x\n", ret);
223 netdev_dbg(dev->net, "asix_get_phy_addr() returning 0x%04x\n",
231 int asix_get_phy_addr(struct usbnet *dev)
233 /* return the address of the internal phy */
234 return asix_read_phy_addr(dev, 1);
238 int asix_sw_reset(struct usbnet *dev, u8 flags)
242 ret = asix_write_cmd(dev, AX_CMD_SW_RESET, flags, 0, 0, NULL);
244 netdev_err(dev->net, "Failed to send software reset: %02x\n", ret);
249 u16 asix_read_rx_ctl(struct usbnet *dev)
252 int ret = asix_read_cmd(dev, AX_CMD_READ_RX_CTL, 0, 0, 2, &v);
255 netdev_err(dev->net, "Error reading RX_CTL register: %02x\n", ret);
258 ret = le16_to_cpu(v);
263 int asix_write_rx_ctl(struct usbnet *dev, u16 mode)
267 netdev_dbg(dev->net, "asix_write_rx_ctl() - mode = 0x%04x\n", mode);
268 ret = asix_write_cmd(dev, AX_CMD_WRITE_RX_CTL, mode, 0, 0, NULL);
270 netdev_err(dev->net, "Failed to write RX_CTL mode to 0x%04x: %02x\n",
276 u16 asix_read_medium_status(struct usbnet *dev)
279 int ret = asix_read_cmd(dev, AX_CMD_READ_MEDIUM_STATUS, 0, 0, 2, &v);
282 netdev_err(dev->net, "Error reading Medium Status register: %02x\n",
284 return ret; /* TODO: callers not checking for error ret */
287 return le16_to_cpu(v);
291 int asix_write_medium_mode(struct usbnet *dev, u16 mode)
295 netdev_dbg(dev->net, "asix_write_medium_mode() - mode = 0x%04x\n", mode);
296 ret = asix_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE, mode, 0, 0, NULL);
298 netdev_err(dev->net, "Failed to write Medium Mode mode to 0x%04x: %02x\n",
304 int asix_write_gpio(struct usbnet *dev, u16 value, int sleep)
308 netdev_dbg(dev->net, "asix_write_gpio() - value = 0x%04x\n", value);
309 ret = asix_write_cmd(dev, AX_CMD_WRITE_GPIOS, value, 0, 0, NULL);
311 netdev_err(dev->net, "Failed to write GPIO value 0x%04x: %02x\n",
321 * AX88772 & AX88178 have a 16-bit RX_CTL value
323 void asix_set_multicast(struct net_device *net)
325 struct usbnet *dev = netdev_priv(net);
326 struct asix_data *data = (struct asix_data *)&dev->data;
327 u16 rx_ctl = AX_DEFAULT_RX_CTL;
329 if (net->flags & IFF_PROMISC) {
330 rx_ctl |= AX_RX_CTL_PRO;
331 } else if (net->flags & IFF_ALLMULTI ||
332 netdev_mc_count(net) > AX_MAX_MCAST) {
333 rx_ctl |= AX_RX_CTL_AMALL;
334 } else if (netdev_mc_empty(net)) {
335 /* just broadcast and directed */
337 /* We use the 20 byte dev->data
338 * for our 8 byte filter buffer
339 * to avoid allocating memory that
340 * is tricky to free later */
341 struct netdev_hw_addr *ha;
344 memset(data->multi_filter, 0, AX_MCAST_FILTER_SIZE);
346 /* Build the multicast hash filter. */
347 netdev_for_each_mc_addr(ha, net) {
348 crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26;
349 data->multi_filter[crc_bits >> 3] |=
353 asix_write_cmd_async(dev, AX_CMD_WRITE_MULTI_FILTER, 0, 0,
354 AX_MCAST_FILTER_SIZE, data->multi_filter);
356 rx_ctl |= AX_RX_CTL_AM;
359 asix_write_cmd_async(dev, AX_CMD_WRITE_RX_CTL, rx_ctl, 0, 0, NULL);
362 int asix_mdio_read(struct net_device *netdev, int phy_id, int loc)
364 struct usbnet *dev = netdev_priv(netdev);
367 mutex_lock(&dev->phy_mutex);
368 asix_set_sw_mii(dev);
369 asix_read_cmd(dev, AX_CMD_READ_MII_REG, phy_id,
370 (__u16)loc, 2, &res);
371 asix_set_hw_mii(dev);
372 mutex_unlock(&dev->phy_mutex);
374 netdev_dbg(dev->net, "asix_mdio_read() phy_id=0x%02x, loc=0x%02x, returns=0x%04x\n",
375 phy_id, loc, le16_to_cpu(res));
377 return le16_to_cpu(res);
380 void asix_mdio_write(struct net_device *netdev, int phy_id, int loc, int val)
382 struct usbnet *dev = netdev_priv(netdev);
383 __le16 res = cpu_to_le16(val);
385 netdev_dbg(dev->net, "asix_mdio_write() phy_id=0x%02x, loc=0x%02x, val=0x%04x\n",
387 mutex_lock(&dev->phy_mutex);
388 asix_set_sw_mii(dev);
389 asix_write_cmd(dev, AX_CMD_WRITE_MII_REG, phy_id, (__u16)loc, 2, &res);
390 asix_set_hw_mii(dev);
391 mutex_unlock(&dev->phy_mutex);
394 void asix_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
396 struct usbnet *dev = netdev_priv(net);
399 if (asix_read_cmd(dev, AX_CMD_READ_MONITOR_MODE, 0, 0, 1, &opt) < 0) {
400 wolinfo->supported = 0;
401 wolinfo->wolopts = 0;
404 wolinfo->supported = WAKE_PHY | WAKE_MAGIC;
405 wolinfo->wolopts = 0;
406 if (opt & AX_MONITOR_LINK)
407 wolinfo->wolopts |= WAKE_PHY;
408 if (opt & AX_MONITOR_MAGIC)
409 wolinfo->wolopts |= WAKE_MAGIC;
412 int asix_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
414 struct usbnet *dev = netdev_priv(net);
417 if (wolinfo->wolopts & WAKE_PHY)
418 opt |= AX_MONITOR_LINK;
419 if (wolinfo->wolopts & WAKE_MAGIC)
420 opt |= AX_MONITOR_MAGIC;
422 if (asix_write_cmd(dev, AX_CMD_WRITE_MONITOR_MODE,
423 opt, 0, 0, NULL) < 0)
429 int asix_get_eeprom_len(struct net_device *net)
431 return AX_EEPROM_LEN;
434 int asix_get_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom,
437 struct usbnet *dev = netdev_priv(net);
439 int first_word, last_word;
442 if (eeprom->len == 0)
445 eeprom->magic = AX_EEPROM_MAGIC;
447 first_word = eeprom->offset >> 1;
448 last_word = (eeprom->offset + eeprom->len - 1) >> 1;
450 eeprom_buff = kmalloc(sizeof(u16) * (last_word - first_word + 1),
455 /* ax8817x returns 2 bytes from eeprom on read */
456 for (i = first_word; i <= last_word; i++) {
457 if (asix_read_cmd(dev, AX_CMD_READ_EEPROM, i, 0, 2,
458 &(eeprom_buff[i - first_word])) < 0) {
464 memcpy(data, (u8 *)eeprom_buff + (eeprom->offset & 1), eeprom->len);
469 int asix_set_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom,
472 struct usbnet *dev = netdev_priv(net);
474 int first_word, last_word;
478 netdev_dbg(net, "write EEPROM len %d, offset %d, magic 0x%x\n",
479 eeprom->len, eeprom->offset, eeprom->magic);
481 if (eeprom->len == 0)
484 if (eeprom->magic != AX_EEPROM_MAGIC)
487 first_word = eeprom->offset >> 1;
488 last_word = (eeprom->offset + eeprom->len - 1) >> 1;
490 eeprom_buff = kmalloc(sizeof(u16) * (last_word - first_word + 1),
495 /* align data to 16 bit boundaries, read the missing data from
497 if (eeprom->offset & 1) {
498 ret = asix_read_cmd(dev, AX_CMD_READ_EEPROM, first_word, 0, 2,
501 netdev_err(net, "Failed to read EEPROM at offset 0x%02x.\n", first_word);
506 if ((eeprom->offset + eeprom->len) & 1) {
507 ret = asix_read_cmd(dev, AX_CMD_READ_EEPROM, last_word, 0, 2,
508 &(eeprom_buff[last_word - first_word]));
510 netdev_err(net, "Failed to read EEPROM at offset 0x%02x.\n", last_word);
515 memcpy((u8 *)eeprom_buff + (eeprom->offset & 1), data, eeprom->len);
517 /* write data to EEPROM */
518 ret = asix_write_cmd(dev, AX_CMD_WRITE_ENABLE, 0x0000, 0, 0, NULL);
520 netdev_err(net, "Failed to enable EEPROM write\n");
525 for (i = first_word; i <= last_word; i++) {
526 netdev_dbg(net, "write to EEPROM at offset 0x%02x, data 0x%04x\n",
527 i, eeprom_buff[i - first_word]);
528 ret = asix_write_cmd(dev, AX_CMD_WRITE_EEPROM, i,
529 eeprom_buff[i - first_word], 0, NULL);
531 netdev_err(net, "Failed to write EEPROM at offset 0x%02x.\n",
538 ret = asix_write_cmd(dev, AX_CMD_WRITE_DISABLE, 0x0000, 0, 0, NULL);
540 netdev_err(net, "Failed to disable EEPROM write\n");
550 void asix_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *info)
552 /* Inherit standard device info */
553 usbnet_get_drvinfo(net, info);
554 strlcpy(info->driver, DRIVER_NAME, sizeof(info->driver));
555 strlcpy(info->version, DRIVER_VERSION, sizeof(info->version));
556 info->eedump_len = AX_EEPROM_LEN;
559 int asix_set_mac_address(struct net_device *net, void *p)
561 struct usbnet *dev = netdev_priv(net);
562 struct asix_data *data = (struct asix_data *)&dev->data;
563 struct sockaddr *addr = p;
565 if (netif_running(net))
567 if (!is_valid_ether_addr(addr->sa_data))
568 return -EADDRNOTAVAIL;
570 memcpy(net->dev_addr, addr->sa_data, ETH_ALEN);
572 /* We use the 20 byte dev->data
573 * for our 6 byte mac buffer
574 * to avoid allocating memory that
575 * is tricky to free later */
576 memcpy(data->mac_addr, addr->sa_data, ETH_ALEN);
577 asix_write_cmd_async(dev, AX_CMD_WRITE_NODE_ID, 0, 0, ETH_ALEN,