blob: 174e5ecea4cc9bb36dc880eb88096b122c0e63ef [file] [log] [blame]
Peter Korsgaardd0374f42007-02-16 17:03:54 +01001/*
2 * Davicom DM9601 USB 1.1 10/100Mbps ethernet devices
3 *
4 * Peter Korsgaard <jacmet@sunsite.dk>
5 *
6 * This file is licensed under the terms of the GNU General Public License
7 * version 2. This program is licensed "as is" without any warranty of any
8 * kind, whether express or implied.
9 */
10
11//#define DEBUG
12
13#include <linux/module.h>
14#include <linux/sched.h>
Randy Dunlap686149f2007-03-16 18:33:13 -070015#include <linux/stddef.h>
Peter Korsgaardd0374f42007-02-16 17:03:54 +010016#include <linux/init.h>
17#include <linux/netdevice.h>
18#include <linux/etherdevice.h>
19#include <linux/ethtool.h>
20#include <linux/mii.h>
21#include <linux/usb.h>
22#include <linux/crc32.h>
Jussi Kivilinna3692e942008-01-26 00:51:45 +020023#include <linux/usb/usbnet.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090024#include <linux/slab.h>
Peter Korsgaardd0374f42007-02-16 17:03:54 +010025
26/* datasheet:
Wu Fengguang98658bc2009-01-06 10:56:07 -080027 http://ptm2.cc.utu.fi/ftp/network/cards/DM9601/From_NET/DM9601-DS-P01-930914.pdf
Peter Korsgaardd0374f42007-02-16 17:03:54 +010028*/
29
30/* control requests */
31#define DM_READ_REGS 0x00
32#define DM_WRITE_REGS 0x01
33#define DM_READ_MEMS 0x02
34#define DM_WRITE_REG 0x03
35#define DM_WRITE_MEMS 0x05
36#define DM_WRITE_MEM 0x07
37
38/* registers */
39#define DM_NET_CTRL 0x00
40#define DM_RX_CTRL 0x05
41#define DM_SHARED_CTRL 0x0b
42#define DM_SHARED_ADDR 0x0c
43#define DM_SHARED_DATA 0x0d /* low + high */
44#define DM_PHY_ADDR 0x10 /* 6 bytes */
45#define DM_MCAST_ADDR 0x16 /* 8 bytes */
46#define DM_GPR_CTRL 0x1e
47#define DM_GPR_DATA 0x1f
Peter Korsgaard6642f912013-01-27 12:34:22 +000048#define DM_CHIP_ID 0x2c
49#define DM_MODE_CTRL 0x91 /* only on dm9620 */
50
51/* chip id values */
52#define ID_DM9601 0
53#define ID_DM9620 1
Peter Korsgaardd0374f42007-02-16 17:03:54 +010054
55#define DM_MAX_MCAST 64
56#define DM_MCAST_SIZE 8
57#define DM_EEPROM_LEN 256
58#define DM_TX_OVERHEAD 2 /* 2 byte header */
59#define DM_RX_OVERHEAD 7 /* 3 byte header + 4 byte crc tail */
60#define DM_TIMEOUT 1000
61
Peter Korsgaardd0374f42007-02-16 17:03:54 +010062static int dm_read(struct usbnet *dev, u8 reg, u16 length, void *data)
63{
Ming Lei24b10422012-10-24 19:46:57 +000064 int err;
65 err = usbnet_read_cmd(dev, DM_READ_REGS,
66 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
67 0, reg, data, length);
68 if(err != length && err >= 0)
Peter Korsgaard16d78bc252008-07-14 09:07:32 +020069 err = -EINVAL;
Peter Korsgaard16d78bc252008-07-14 09:07:32 +020070 return err;
Peter Korsgaardd0374f42007-02-16 17:03:54 +010071}
72
73static int dm_read_reg(struct usbnet *dev, u8 reg, u8 *value)
74{
75 return dm_read(dev, reg, 1, value);
76}
77
78static int dm_write(struct usbnet *dev, u8 reg, u16 length, void *data)
79{
Ming Lei24b10422012-10-24 19:46:57 +000080 int err;
81 err = usbnet_write_cmd(dev, DM_WRITE_REGS,
82 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
83 0, reg, data, length);
Peter Korsgaard16d78bc252008-07-14 09:07:32 +020084
Peter Korsgaard16d78bc252008-07-14 09:07:32 +020085 if (err >= 0 && err < length)
86 err = -EINVAL;
Peter Korsgaard16d78bc252008-07-14 09:07:32 +020087 return err;
Peter Korsgaardd0374f42007-02-16 17:03:54 +010088}
89
90static int dm_write_reg(struct usbnet *dev, u8 reg, u8 value)
91{
Tushar Behera1b9c3a12013-01-14 19:39:01 +000092 return usbnet_write_cmd(dev, DM_WRITE_REG,
Ming Lei24b10422012-10-24 19:46:57 +000093 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
94 value, reg, NULL, 0);
Peter Korsgaardd0374f42007-02-16 17:03:54 +010095}
96
Tushar Behera1b9c3a12013-01-14 19:39:01 +000097static void dm_write_async(struct usbnet *dev, u8 reg, u16 length, void *data)
Peter Korsgaardd0374f42007-02-16 17:03:54 +010098{
Ming Lei24b10422012-10-24 19:46:57 +000099 usbnet_write_cmd_async(dev, DM_WRITE_REGS,
100 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
Tushar Behera1b9c3a12013-01-14 19:39:01 +0000101 0, reg, data, length);
Peter Korsgaardba734f32007-11-15 11:10:12 +0100102}
103
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100104static void dm_write_reg_async(struct usbnet *dev, u8 reg, u8 value)
105{
Tushar Behera1b9c3a12013-01-14 19:39:01 +0000106 usbnet_write_cmd_async(dev, DM_WRITE_REG,
107 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
108 value, reg, NULL, 0);
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100109}
110
Al Viroeca1ad82008-03-16 22:21:54 +0000111static int dm_read_shared_word(struct usbnet *dev, int phy, u8 reg, __le16 *value)
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100112{
113 int ret, i;
114
115 mutex_lock(&dev->phy_mutex);
116
117 dm_write_reg(dev, DM_SHARED_ADDR, phy ? (reg | 0x40) : reg);
118 dm_write_reg(dev, DM_SHARED_CTRL, phy ? 0xc : 0x4);
119
120 for (i = 0; i < DM_TIMEOUT; i++) {
Simon Que15c8bb12013-01-17 09:29:49 +0000121 u8 tmp = 0;
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100122
123 udelay(1);
124 ret = dm_read_reg(dev, DM_SHARED_CTRL, &tmp);
125 if (ret < 0)
126 goto out;
127
128 /* ready */
129 if ((tmp & 1) == 0)
130 break;
131 }
132
133 if (i == DM_TIMEOUT) {
Joe Perches60b86752010-02-17 10:30:23 +0000134 netdev_err(dev->net, "%s read timed out!\n", phy ? "phy" : "eeprom");
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100135 ret = -EIO;
136 goto out;
137 }
138
139 dm_write_reg(dev, DM_SHARED_CTRL, 0x0);
140 ret = dm_read(dev, DM_SHARED_DATA, 2, value);
141
Joe Perches60b86752010-02-17 10:30:23 +0000142 netdev_dbg(dev->net, "read shared %d 0x%02x returned 0x%04x, %d\n",
143 phy, reg, *value, ret);
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100144
145 out:
146 mutex_unlock(&dev->phy_mutex);
147 return ret;
148}
149
Al Viroeca1ad82008-03-16 22:21:54 +0000150static int dm_write_shared_word(struct usbnet *dev, int phy, u8 reg, __le16 value)
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100151{
152 int ret, i;
153
154 mutex_lock(&dev->phy_mutex);
155
156 ret = dm_write(dev, DM_SHARED_DATA, 2, &value);
157 if (ret < 0)
158 goto out;
159
160 dm_write_reg(dev, DM_SHARED_ADDR, phy ? (reg | 0x40) : reg);
Peter Korsgaarde9162ab2010-05-03 10:01:26 +0000161 dm_write_reg(dev, DM_SHARED_CTRL, phy ? 0x1a : 0x12);
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100162
163 for (i = 0; i < DM_TIMEOUT; i++) {
Simon Que15c8bb12013-01-17 09:29:49 +0000164 u8 tmp = 0;
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100165
166 udelay(1);
167 ret = dm_read_reg(dev, DM_SHARED_CTRL, &tmp);
168 if (ret < 0)
169 goto out;
170
171 /* ready */
172 if ((tmp & 1) == 0)
173 break;
174 }
175
176 if (i == DM_TIMEOUT) {
Joe Perches60b86752010-02-17 10:30:23 +0000177 netdev_err(dev->net, "%s write timed out!\n", phy ? "phy" : "eeprom");
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100178 ret = -EIO;
179 goto out;
180 }
181
182 dm_write_reg(dev, DM_SHARED_CTRL, 0x0);
183
184out:
185 mutex_unlock(&dev->phy_mutex);
186 return ret;
187}
188
189static int dm_read_eeprom_word(struct usbnet *dev, u8 offset, void *value)
190{
191 return dm_read_shared_word(dev, 0, offset, value);
192}
193
194
195
196static int dm9601_get_eeprom_len(struct net_device *dev)
197{
198 return DM_EEPROM_LEN;
199}
200
201static int dm9601_get_eeprom(struct net_device *net,
202 struct ethtool_eeprom *eeprom, u8 * data)
203{
204 struct usbnet *dev = netdev_priv(net);
Al Viroeca1ad82008-03-16 22:21:54 +0000205 __le16 *ebuf = (__le16 *) data;
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100206 int i;
207
208 /* access is 16bit */
209 if ((eeprom->offset % 2) || (eeprom->len % 2))
210 return -EINVAL;
211
212 for (i = 0; i < eeprom->len / 2; i++) {
213 if (dm_read_eeprom_word(dev, eeprom->offset / 2 + i,
214 &ebuf[i]) < 0)
215 return -EINVAL;
216 }
217 return 0;
218}
219
220static int dm9601_mdio_read(struct net_device *netdev, int phy_id, int loc)
221{
222 struct usbnet *dev = netdev_priv(netdev);
223
Al Viroeca1ad82008-03-16 22:21:54 +0000224 __le16 res;
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100225
226 if (phy_id) {
Joe Perches60b86752010-02-17 10:30:23 +0000227 netdev_dbg(dev->net, "Only internal phy supported\n");
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100228 return 0;
229 }
230
231 dm_read_shared_word(dev, 1, loc, &res);
232
Joe Perches60b86752010-02-17 10:30:23 +0000233 netdev_dbg(dev->net,
234 "dm9601_mdio_read() phy_id=0x%02x, loc=0x%02x, returns=0x%04x\n",
235 phy_id, loc, le16_to_cpu(res));
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100236
237 return le16_to_cpu(res);
238}
239
240static void dm9601_mdio_write(struct net_device *netdev, int phy_id, int loc,
241 int val)
242{
243 struct usbnet *dev = netdev_priv(netdev);
Al Viroeca1ad82008-03-16 22:21:54 +0000244 __le16 res = cpu_to_le16(val);
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100245
246 if (phy_id) {
Joe Perches60b86752010-02-17 10:30:23 +0000247 netdev_dbg(dev->net, "Only internal phy supported\n");
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100248 return;
249 }
250
Joe Perches60b86752010-02-17 10:30:23 +0000251 netdev_dbg(dev->net, "dm9601_mdio_write() phy_id=0x%02x, loc=0x%02x, val=0x%04x\n",
252 phy_id, loc, val);
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100253
254 dm_write_shared_word(dev, 1, loc, res);
255}
256
257static void dm9601_get_drvinfo(struct net_device *net,
258 struct ethtool_drvinfo *info)
259{
260 /* Inherit standard device info */
261 usbnet_get_drvinfo(net, info);
262 info->eedump_len = DM_EEPROM_LEN;
263}
264
265static u32 dm9601_get_link(struct net_device *net)
266{
267 struct usbnet *dev = netdev_priv(net);
268
269 return mii_link_ok(&dev->mii);
270}
271
272static int dm9601_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
273{
274 struct usbnet *dev = netdev_priv(net);
275
276 return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
277}
278
Stephen Hemminger0fc0b732009-09-02 01:03:33 -0700279static const struct ethtool_ops dm9601_ethtool_ops = {
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100280 .get_drvinfo = dm9601_get_drvinfo,
281 .get_link = dm9601_get_link,
282 .get_msglevel = usbnet_get_msglevel,
283 .set_msglevel = usbnet_set_msglevel,
284 .get_eeprom_len = dm9601_get_eeprom_len,
285 .get_eeprom = dm9601_get_eeprom,
286 .get_settings = usbnet_get_settings,
287 .set_settings = usbnet_set_settings,
288 .nway_reset = usbnet_nway_reset,
289};
290
291static void dm9601_set_multicast(struct net_device *net)
292{
293 struct usbnet *dev = netdev_priv(net);
294 /* We use the 20 byte dev->data for our 8 byte filter buffer
295 * to avoid allocating memory that is tricky to free later */
296 u8 *hashes = (u8 *) & dev->data;
Peter Korsgaard33edded2008-03-18 23:16:54 +0100297 u8 rx_ctl = 0x31;
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100298
299 memset(hashes, 0x00, DM_MCAST_SIZE);
300 hashes[DM_MCAST_SIZE - 1] |= 0x80; /* broadcast address */
301
302 if (net->flags & IFF_PROMISC) {
303 rx_ctl |= 0x02;
Jiri Pirko2cc04d22010-02-05 02:51:24 +0000304 } else if (net->flags & IFF_ALLMULTI ||
305 netdev_mc_count(net) > DM_MAX_MCAST) {
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100306 rx_ctl |= 0x04;
Jiri Pirko2cc04d22010-02-05 02:51:24 +0000307 } else if (!netdev_mc_empty(net)) {
Jiri Pirko22bedad32010-04-01 21:22:57 +0000308 struct netdev_hw_addr *ha;
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100309
Jiri Pirko22bedad32010-04-01 21:22:57 +0000310 netdev_for_each_mc_addr(ha, net) {
311 u32 crc = ether_crc(ETH_ALEN, ha->addr) >> 26;
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100312 hashes[crc >> 3] |= 1 << (crc & 0x7);
313 }
314 }
315
316 dm_write_async(dev, DM_MCAST_ADDR, DM_MCAST_SIZE, hashes);
317 dm_write_reg_async(dev, DM_RX_CTRL, rx_ctl);
318}
319
Wu Fengguang4b9f8ec2009-01-06 18:52:58 +0000320static void __dm9601_set_mac_address(struct usbnet *dev)
321{
322 dm_write_async(dev, DM_PHY_ADDR, ETH_ALEN, dev->net->dev_addr);
323}
324
Peter Korsgaard753dcfe2008-10-24 09:08:27 +0200325static int dm9601_set_mac_address(struct net_device *net, void *p)
326{
327 struct sockaddr *addr = p;
328 struct usbnet *dev = netdev_priv(net);
329
Wu Fengguangf52deb02009-01-08 10:47:01 -0800330 if (!is_valid_ether_addr(addr->sa_data)) {
331 dev_err(&net->dev, "not setting invalid mac address %pM\n",
332 addr->sa_data);
Peter Korsgaard753dcfe2008-10-24 09:08:27 +0200333 return -EINVAL;
Wu Fengguangf52deb02009-01-08 10:47:01 -0800334 }
Peter Korsgaard753dcfe2008-10-24 09:08:27 +0200335
336 memcpy(net->dev_addr, addr->sa_data, net->addr_len);
Wu Fengguang4b9f8ec2009-01-06 18:52:58 +0000337 __dm9601_set_mac_address(dev);
Peter Korsgaard753dcfe2008-10-24 09:08:27 +0200338
339 return 0;
340}
341
Stephen Hemmingerfe85ff82009-03-20 19:35:56 +0000342static const struct net_device_ops dm9601_netdev_ops = {
343 .ndo_open = usbnet_open,
344 .ndo_stop = usbnet_stop,
345 .ndo_start_xmit = usbnet_start_xmit,
346 .ndo_tx_timeout = usbnet_tx_timeout,
347 .ndo_change_mtu = usbnet_change_mtu,
348 .ndo_validate_addr = eth_validate_addr,
349 .ndo_do_ioctl = dm9601_ioctl,
Jiri Pirkoafc4b132011-08-16 06:29:01 +0000350 .ndo_set_rx_mode = dm9601_set_multicast,
Stephen Hemmingerfe85ff82009-03-20 19:35:56 +0000351 .ndo_set_mac_address = dm9601_set_mac_address,
352};
353
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100354static int dm9601_bind(struct usbnet *dev, struct usb_interface *intf)
355{
356 int ret;
Peter Korsgaard6642f912013-01-27 12:34:22 +0000357 u8 mac[ETH_ALEN], id;
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100358
359 ret = usbnet_get_endpoints(dev, intf);
360 if (ret)
361 goto out;
362
Stephen Hemmingerfe85ff82009-03-20 19:35:56 +0000363 dev->net->netdev_ops = &dm9601_netdev_ops;
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100364 dev->net->ethtool_ops = &dm9601_ethtool_ops;
365 dev->net->hard_header_len += DM_TX_OVERHEAD;
366 dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len;
Peter Korsgaardf662fe52007-10-01 13:36:07 +0200367 dev->rx_urb_size = dev->net->mtu + ETH_HLEN + DM_RX_OVERHEAD;
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100368
369 dev->mii.dev = dev->net;
370 dev->mii.mdio_read = dm9601_mdio_read;
371 dev->mii.mdio_write = dm9601_mdio_write;
372 dev->mii.phy_id_mask = 0x1f;
373 dev->mii.reg_num_mask = 0x1f;
374
375 /* reset */
Peter Korsgaardb8f595862007-06-30 23:07:42 +0200376 dm_write_reg(dev, DM_NET_CTRL, 1);
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100377 udelay(20);
378
379 /* read MAC */
Wu Fengguang20f10aa2009-01-06 10:55:10 -0800380 if (dm_read(dev, DM_PHY_ADDR, ETH_ALEN, mac) < 0) {
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100381 printk(KERN_ERR "Error reading MAC address\n");
382 ret = -ENODEV;
383 goto out;
384 }
385
Wu Fengguang20f10aa2009-01-06 10:55:10 -0800386 /*
387 * Overwrite the auto-generated address only with good ones.
388 */
389 if (is_valid_ether_addr(mac))
390 memcpy(dev->net->dev_addr, mac, ETH_ALEN);
Wu Fengguangf52deb02009-01-08 10:47:01 -0800391 else {
392 printk(KERN_WARNING
393 "dm9601: No valid MAC address in EEPROM, using %pM\n",
394 dev->net->dev_addr);
Wu Fengguang4b9f8ec2009-01-06 18:52:58 +0000395 __dm9601_set_mac_address(dev);
Wu Fengguangf52deb02009-01-08 10:47:01 -0800396 }
Wu Fengguang20f10aa2009-01-06 10:55:10 -0800397
Peter Korsgaard6642f912013-01-27 12:34:22 +0000398 if (dm_read_reg(dev, DM_CHIP_ID, &id) < 0) {
399 netdev_err(dev->net, "Error reading chip ID\n");
400 ret = -ENODEV;
401 goto out;
402 }
403
404 /* put dm9620 devices in dm9601 mode */
405 if (id == ID_DM9620) {
406 u8 mode;
407
408 if (dm_read_reg(dev, DM_MODE_CTRL, &mode) < 0) {
409 netdev_err(dev->net, "Error reading MODE_CTRL\n");
410 ret = -ENODEV;
411 goto out;
412 }
413 dm_write_reg(dev, DM_MODE_CTRL, mode & 0x7f);
414 }
415
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100416 /* power up phy */
417 dm_write_reg(dev, DM_GPR_CTRL, 1);
418 dm_write_reg(dev, DM_GPR_DATA, 0);
419
420 /* receive broadcast packets */
421 dm9601_set_multicast(dev->net);
422
423 dm9601_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET);
424 dm9601_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
425 ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP);
426 mii_nway_restart(&dev->mii);
427
428out:
429 return ret;
430}
431
432static int dm9601_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
433{
434 u8 status;
435 int len;
436
437 /* format:
Peter Korsgaard61189c72009-05-13 10:09:53 +0000438 b1: rx status
439 b2: packet length (incl crc) low
440 b3: packet length (incl crc) high
441 b4..n-4: packet data
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100442 bn-3..bn: ethernet crc
443 */
444
445 if (unlikely(skb->len < DM_RX_OVERHEAD)) {
446 dev_err(&dev->udev->dev, "unexpected tiny rx frame\n");
447 return 0;
448 }
449
450 status = skb->data[0];
451 len = (skb->data[1] | (skb->data[2] << 8)) - 4;
452
453 if (unlikely(status & 0xbf)) {
Herbert Xu96121012009-06-29 16:50:51 +0000454 if (status & 0x01) dev->net->stats.rx_fifo_errors++;
455 if (status & 0x02) dev->net->stats.rx_crc_errors++;
456 if (status & 0x04) dev->net->stats.rx_frame_errors++;
457 if (status & 0x20) dev->net->stats.rx_missed_errors++;
458 if (status & 0x90) dev->net->stats.rx_length_errors++;
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100459 return 0;
460 }
461
462 skb_pull(skb, 3);
463 skb_trim(skb, len);
464
465 return 1;
466}
467
468static struct sk_buff *dm9601_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
469 gfp_t flags)
470{
471 int len;
472
473 /* format:
Peter Korsgaard61189c72009-05-13 10:09:53 +0000474 b1: packet length low
475 b2: packet length high
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100476 b3..n: packet data
477 */
478
Peter Korsgaard23de5592007-06-27 08:14:50 +0200479 len = skb->len;
480
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100481 if (skb_headroom(skb) < DM_TX_OVERHEAD) {
482 struct sk_buff *skb2;
483
484 skb2 = skb_copy_expand(skb, DM_TX_OVERHEAD, 0, flags);
485 dev_kfree_skb_any(skb);
486 skb = skb2;
487 if (!skb)
488 return NULL;
489 }
490
491 __skb_push(skb, DM_TX_OVERHEAD);
492
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100493 /* usbnet adds padding if length is a multiple of packet size
494 if so, adjust length value in header */
Peter Korsgaard23de5592007-06-27 08:14:50 +0200495 if ((skb->len % dev->maxpacket) == 0)
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100496 len++;
497
498 skb->data[0] = len;
499 skb->data[1] = len >> 8;
500
501 return skb;
502}
503
504static void dm9601_status(struct usbnet *dev, struct urb *urb)
505{
506 int link;
507 u8 *buf;
508
509 /* format:
510 b0: net status
511 b1: tx status 1
512 b2: tx status 2
513 b3: rx status
514 b4: rx overflow
515 b5: rx count
516 b6: tx count
517 b7: gpr
518 */
519
520 if (urb->actual_length < 8)
521 return;
522
523 buf = urb->transfer_buffer;
524
525 link = !!(buf[0] & 0x40);
526 if (netif_carrier_ok(dev->net) != link) {
527 if (link) {
528 netif_carrier_on(dev->net);
529 usbnet_defer_kevent (dev, EVENT_LINK_RESET);
530 }
531 else
532 netif_carrier_off(dev->net);
Joe Perches60b86752010-02-17 10:30:23 +0000533 netdev_dbg(dev->net, "Link Status is: %d\n", link);
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100534 }
535}
536
537static int dm9601_link_reset(struct usbnet *dev)
538{
David Decotigny8ae6dac2011-04-27 18:32:38 +0000539 struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET };
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100540
541 mii_check_media(&dev->mii, 1, 1);
542 mii_ethtool_gset(&dev->mii, &ecmd);
543
David Decotigny8ae6dac2011-04-27 18:32:38 +0000544 netdev_dbg(dev->net, "link_reset() speed: %u duplex: %d\n",
545 ethtool_cmd_speed(&ecmd), ecmd.duplex);
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100546
547 return 0;
548}
549
550static const struct driver_info dm9601_info = {
551 .description = "Davicom DM9601 USB Ethernet",
Ben Hutchings37e82732009-11-04 15:29:52 +0000552 .flags = FLAG_ETHER | FLAG_LINK_INTR,
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100553 .bind = dm9601_bind,
554 .rx_fixup = dm9601_rx_fixup,
555 .tx_fixup = dm9601_tx_fixup,
556 .status = dm9601_status,
557 .link_reset = dm9601_link_reset,
558 .reset = dm9601_link_reset,
559};
560
561static const struct usb_device_id products[] = {
562 {
YOSHIFUJI Hideaki6438ac22007-03-02 20:33:55 -0500563 USB_DEVICE(0x07aa, 0x9601), /* Corega FEther USB-TXC */
564 .driver_info = (unsigned long)&dm9601_info,
565 },
566 {
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100567 USB_DEVICE(0x0a46, 0x9601), /* Davicom USB-100 */
568 .driver_info = (unsigned long)&dm9601_info,
569 },
Jon Dowland6dc477f2007-03-11 20:03:03 +0000570 {
571 USB_DEVICE(0x0a46, 0x6688), /* ZT6688 USB NIC */
572 .driver_info = (unsigned long)&dm9601_info,
573 },
574 {
575 USB_DEVICE(0x0a46, 0x0268), /* ShanTou ST268 USB NIC */
576 .driver_info = (unsigned long)&dm9601_info,
577 },
Peter Korsgaarda06da752007-10-30 14:23:47 +0100578 {
579 USB_DEVICE(0x0a46, 0x8515), /* ADMtek ADM8515 USB NIC */
580 .driver_info = (unsigned long)&dm9601_info,
581 },
Peter Korsgaardb47b4b22008-03-18 23:16:53 +0100582 {
583 USB_DEVICE(0x0a47, 0x9601), /* Hirose USB-100 */
584 .driver_info = (unsigned long)&dm9601_info,
585 },
Peter Korsgaarda1a69c82009-03-03 23:48:16 -0800586 {
587 USB_DEVICE(0x0fe6, 0x8101), /* DM9601 USB to Fast Ethernet Adapter */
588 .driver_info = (unsigned long)&dm9601_info,
589 },
Janusz Krzysztofik06b71b62009-10-28 05:34:21 +0000590 {
Shahar Havivi67158ce2011-02-22 04:41:11 +0000591 USB_DEVICE(0x0fe6, 0x9700), /* DM9601 USB to Fast Ethernet Adapter */
592 .driver_info = (unsigned long)&dm9601_info,
593 },
594 {
Janusz Krzysztofik06b71b62009-10-28 05:34:21 +0000595 USB_DEVICE(0x0a46, 0x9000), /* DM9000E */
596 .driver_info = (unsigned long)&dm9601_info,
597 },
Peter Korsgaard6642f912013-01-27 12:34:22 +0000598 {
599 USB_DEVICE(0x0a46, 0x9620), /* DM9620 USB to Fast Ethernet Adapter */
600 .driver_info = (unsigned long)&dm9601_info,
601 },
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100602 {}, // END
603};
604
605MODULE_DEVICE_TABLE(usb, products);
606
607static struct usb_driver dm9601_driver = {
608 .name = "dm9601",
609 .id_table = products,
610 .probe = usbnet_probe,
611 .disconnect = usbnet_disconnect,
612 .suspend = usbnet_suspend,
613 .resume = usbnet_resume,
Sarah Sharpe1f12eb2012-04-23 10:08:51 -0700614 .disable_hub_initiated_lpm = 1,
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100615};
616
Greg Kroah-Hartmand632eb12011-11-18 09:44:20 -0800617module_usb_driver(dm9601_driver);
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100618
619MODULE_AUTHOR("Peter Korsgaard <jacmet@sunsite.dk>");
620MODULE_DESCRIPTION("Davicom DM9601 USB 1.1 ethernet devices");
621MODULE_LICENSE("GPL");