blob: 04b281002a762c81a99270fa1da365c7992e21ad [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
48
49#define DM_MAX_MCAST 64
50#define DM_MCAST_SIZE 8
51#define DM_EEPROM_LEN 256
52#define DM_TX_OVERHEAD 2 /* 2 byte header */
53#define DM_RX_OVERHEAD 7 /* 3 byte header + 4 byte crc tail */
54#define DM_TIMEOUT 1000
55
56
57static int dm_read(struct usbnet *dev, u8 reg, u16 length, void *data)
58{
Peter Korsgaard16d78bc252008-07-14 09:07:32 +020059 void *buf;
60 int err = -ENOMEM;
61
Joe Perches60b86752010-02-17 10:30:23 +000062 netdev_dbg(dev->net, "dm_read() reg=0x%02x length=%d\n", reg, length);
Peter Korsgaard16d78bc252008-07-14 09:07:32 +020063
64 buf = kmalloc(length, GFP_KERNEL);
65 if (!buf)
66 goto out;
67
68 err = usb_control_msg(dev->udev,
69 usb_rcvctrlpipe(dev->udev, 0),
70 DM_READ_REGS,
71 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
72 0, reg, buf, length, USB_CTRL_SET_TIMEOUT);
73 if (err == length)
74 memcpy(data, buf, length);
75 else if (err >= 0)
76 err = -EINVAL;
77 kfree(buf);
78
79 out:
80 return err;
Peter Korsgaardd0374f42007-02-16 17:03:54 +010081}
82
83static int dm_read_reg(struct usbnet *dev, u8 reg, u8 *value)
84{
85 return dm_read(dev, reg, 1, value);
86}
87
88static int dm_write(struct usbnet *dev, u8 reg, u16 length, void *data)
89{
Peter Korsgaard16d78bc252008-07-14 09:07:32 +020090 void *buf = NULL;
91 int err = -ENOMEM;
92
Joe Perches60b86752010-02-17 10:30:23 +000093 netdev_dbg(dev->net, "dm_write() reg=0x%02x, length=%d\n", reg, length);
Peter Korsgaard16d78bc252008-07-14 09:07:32 +020094
95 if (data) {
96 buf = kmalloc(length, GFP_KERNEL);
97 if (!buf)
98 goto out;
99 memcpy(buf, data, length);
100 }
101
102 err = usb_control_msg(dev->udev,
103 usb_sndctrlpipe(dev->udev, 0),
104 DM_WRITE_REGS,
105 USB_DIR_OUT | USB_TYPE_VENDOR |USB_RECIP_DEVICE,
106 0, reg, buf, length, USB_CTRL_SET_TIMEOUT);
107 kfree(buf);
108 if (err >= 0 && err < length)
109 err = -EINVAL;
110 out:
111 return err;
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100112}
113
114static int dm_write_reg(struct usbnet *dev, u8 reg, u8 value)
115{
Joe Perches60b86752010-02-17 10:30:23 +0000116 netdev_dbg(dev->net, "dm_write_reg() reg=0x%02x, value=0x%02x\n",
117 reg, value);
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100118 return usb_control_msg(dev->udev,
119 usb_sndctrlpipe(dev->udev, 0),
120 DM_WRITE_REG,
121 USB_DIR_OUT | USB_TYPE_VENDOR |USB_RECIP_DEVICE,
Randy Dunlap686149f2007-03-16 18:33:13 -0700122 value, reg, NULL, 0, USB_CTRL_SET_TIMEOUT);
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100123}
124
125static void dm_write_async_callback(struct urb *urb)
126{
127 struct usb_ctrlrequest *req = (struct usb_ctrlrequest *)urb->context;
Oliver Neukumc94cb312008-12-18 23:00:59 -0800128 int status = urb->status;
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100129
Oliver Neukumc94cb312008-12-18 23:00:59 -0800130 if (status < 0)
Peter Korsgaard77b69012007-11-15 11:01:02 +0100131 printk(KERN_DEBUG "dm_write_async_callback() failed with %d\n",
Oliver Neukumc94cb312008-12-18 23:00:59 -0800132 status);
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100133
134 kfree(req);
135 usb_free_urb(urb);
136}
137
Peter Korsgaardba734f32007-11-15 11:10:12 +0100138static void dm_write_async_helper(struct usbnet *dev, u8 reg, u8 value,
139 u16 length, void *data)
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100140{
141 struct usb_ctrlrequest *req;
142 struct urb *urb;
143 int status;
144
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100145 urb = usb_alloc_urb(0, GFP_ATOMIC);
146 if (!urb) {
Joe Perches60b86752010-02-17 10:30:23 +0000147 netdev_err(dev->net, "Error allocating URB in dm_write_async_helper!\n");
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100148 return;
149 }
150
151 req = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC);
152 if (!req) {
Joe Perches60b86752010-02-17 10:30:23 +0000153 netdev_err(dev->net, "Failed to allocate memory for control request\n");
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100154 usb_free_urb(urb);
155 return;
156 }
157
158 req->bRequestType = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE;
Peter Korsgaardba734f32007-11-15 11:10:12 +0100159 req->bRequest = length ? DM_WRITE_REGS : DM_WRITE_REG;
160 req->wValue = cpu_to_le16(value);
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100161 req->wIndex = cpu_to_le16(reg);
162 req->wLength = cpu_to_le16(length);
163
164 usb_fill_control_urb(urb, dev->udev,
165 usb_sndctrlpipe(dev->udev, 0),
166 (void *)req, data, length,
167 dm_write_async_callback, req);
168
169 status = usb_submit_urb(urb, GFP_ATOMIC);
170 if (status < 0) {
Joe Perches60b86752010-02-17 10:30:23 +0000171 netdev_err(dev->net, "Error submitting the control message: status=%d\n",
172 status);
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100173 kfree(req);
174 usb_free_urb(urb);
175 }
176}
177
Peter Korsgaardba734f32007-11-15 11:10:12 +0100178static void dm_write_async(struct usbnet *dev, u8 reg, u16 length, void *data)
179{
Joe Perches60b86752010-02-17 10:30:23 +0000180 netdev_dbg(dev->net, "dm_write_async() reg=0x%02x length=%d\n", reg, length);
Peter Korsgaardba734f32007-11-15 11:10:12 +0100181
182 dm_write_async_helper(dev, reg, 0, length, data);
183}
184
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100185static void dm_write_reg_async(struct usbnet *dev, u8 reg, u8 value)
186{
Joe Perches60b86752010-02-17 10:30:23 +0000187 netdev_dbg(dev->net, "dm_write_reg_async() reg=0x%02x value=0x%02x\n",
188 reg, value);
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100189
Peter Korsgaardba734f32007-11-15 11:10:12 +0100190 dm_write_async_helper(dev, reg, value, 0, NULL);
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100191}
192
Al Viroeca1ad82008-03-16 22:21:54 +0000193static int dm_read_shared_word(struct usbnet *dev, int phy, u8 reg, __le16 *value)
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100194{
195 int ret, i;
196
197 mutex_lock(&dev->phy_mutex);
198
199 dm_write_reg(dev, DM_SHARED_ADDR, phy ? (reg | 0x40) : reg);
200 dm_write_reg(dev, DM_SHARED_CTRL, phy ? 0xc : 0x4);
201
202 for (i = 0; i < DM_TIMEOUT; i++) {
203 u8 tmp;
204
205 udelay(1);
206 ret = dm_read_reg(dev, DM_SHARED_CTRL, &tmp);
207 if (ret < 0)
208 goto out;
209
210 /* ready */
211 if ((tmp & 1) == 0)
212 break;
213 }
214
215 if (i == DM_TIMEOUT) {
Joe Perches60b86752010-02-17 10:30:23 +0000216 netdev_err(dev->net, "%s read timed out!\n", phy ? "phy" : "eeprom");
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100217 ret = -EIO;
218 goto out;
219 }
220
221 dm_write_reg(dev, DM_SHARED_CTRL, 0x0);
222 ret = dm_read(dev, DM_SHARED_DATA, 2, value);
223
Joe Perches60b86752010-02-17 10:30:23 +0000224 netdev_dbg(dev->net, "read shared %d 0x%02x returned 0x%04x, %d\n",
225 phy, reg, *value, ret);
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100226
227 out:
228 mutex_unlock(&dev->phy_mutex);
229 return ret;
230}
231
Al Viroeca1ad82008-03-16 22:21:54 +0000232static int dm_write_shared_word(struct usbnet *dev, int phy, u8 reg, __le16 value)
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100233{
234 int ret, i;
235
236 mutex_lock(&dev->phy_mutex);
237
238 ret = dm_write(dev, DM_SHARED_DATA, 2, &value);
239 if (ret < 0)
240 goto out;
241
242 dm_write_reg(dev, DM_SHARED_ADDR, phy ? (reg | 0x40) : reg);
243 dm_write_reg(dev, DM_SHARED_CTRL, phy ? 0x1c : 0x14);
244
245 for (i = 0; i < DM_TIMEOUT; i++) {
246 u8 tmp;
247
248 udelay(1);
249 ret = dm_read_reg(dev, DM_SHARED_CTRL, &tmp);
250 if (ret < 0)
251 goto out;
252
253 /* ready */
254 if ((tmp & 1) == 0)
255 break;
256 }
257
258 if (i == DM_TIMEOUT) {
Joe Perches60b86752010-02-17 10:30:23 +0000259 netdev_err(dev->net, "%s write timed out!\n", phy ? "phy" : "eeprom");
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100260 ret = -EIO;
261 goto out;
262 }
263
264 dm_write_reg(dev, DM_SHARED_CTRL, 0x0);
265
266out:
267 mutex_unlock(&dev->phy_mutex);
268 return ret;
269}
270
271static int dm_read_eeprom_word(struct usbnet *dev, u8 offset, void *value)
272{
273 return dm_read_shared_word(dev, 0, offset, value);
274}
275
276
277
278static int dm9601_get_eeprom_len(struct net_device *dev)
279{
280 return DM_EEPROM_LEN;
281}
282
283static int dm9601_get_eeprom(struct net_device *net,
284 struct ethtool_eeprom *eeprom, u8 * data)
285{
286 struct usbnet *dev = netdev_priv(net);
Al Viroeca1ad82008-03-16 22:21:54 +0000287 __le16 *ebuf = (__le16 *) data;
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100288 int i;
289
290 /* access is 16bit */
291 if ((eeprom->offset % 2) || (eeprom->len % 2))
292 return -EINVAL;
293
294 for (i = 0; i < eeprom->len / 2; i++) {
295 if (dm_read_eeprom_word(dev, eeprom->offset / 2 + i,
296 &ebuf[i]) < 0)
297 return -EINVAL;
298 }
299 return 0;
300}
301
302static int dm9601_mdio_read(struct net_device *netdev, int phy_id, int loc)
303{
304 struct usbnet *dev = netdev_priv(netdev);
305
Al Viroeca1ad82008-03-16 22:21:54 +0000306 __le16 res;
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100307
308 if (phy_id) {
Joe Perches60b86752010-02-17 10:30:23 +0000309 netdev_dbg(dev->net, "Only internal phy supported\n");
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100310 return 0;
311 }
312
313 dm_read_shared_word(dev, 1, loc, &res);
314
Joe Perches60b86752010-02-17 10:30:23 +0000315 netdev_dbg(dev->net,
316 "dm9601_mdio_read() phy_id=0x%02x, loc=0x%02x, returns=0x%04x\n",
317 phy_id, loc, le16_to_cpu(res));
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100318
319 return le16_to_cpu(res);
320}
321
322static void dm9601_mdio_write(struct net_device *netdev, int phy_id, int loc,
323 int val)
324{
325 struct usbnet *dev = netdev_priv(netdev);
Al Viroeca1ad82008-03-16 22:21:54 +0000326 __le16 res = cpu_to_le16(val);
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100327
328 if (phy_id) {
Joe Perches60b86752010-02-17 10:30:23 +0000329 netdev_dbg(dev->net, "Only internal phy supported\n");
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100330 return;
331 }
332
Joe Perches60b86752010-02-17 10:30:23 +0000333 netdev_dbg(dev->net, "dm9601_mdio_write() phy_id=0x%02x, loc=0x%02x, val=0x%04x\n",
334 phy_id, loc, val);
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100335
336 dm_write_shared_word(dev, 1, loc, res);
337}
338
339static void dm9601_get_drvinfo(struct net_device *net,
340 struct ethtool_drvinfo *info)
341{
342 /* Inherit standard device info */
343 usbnet_get_drvinfo(net, info);
344 info->eedump_len = DM_EEPROM_LEN;
345}
346
347static u32 dm9601_get_link(struct net_device *net)
348{
349 struct usbnet *dev = netdev_priv(net);
350
351 return mii_link_ok(&dev->mii);
352}
353
354static int dm9601_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
355{
356 struct usbnet *dev = netdev_priv(net);
357
358 return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
359}
360
Stephen Hemminger0fc0b732009-09-02 01:03:33 -0700361static const struct ethtool_ops dm9601_ethtool_ops = {
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100362 .get_drvinfo = dm9601_get_drvinfo,
363 .get_link = dm9601_get_link,
364 .get_msglevel = usbnet_get_msglevel,
365 .set_msglevel = usbnet_set_msglevel,
366 .get_eeprom_len = dm9601_get_eeprom_len,
367 .get_eeprom = dm9601_get_eeprom,
368 .get_settings = usbnet_get_settings,
369 .set_settings = usbnet_set_settings,
370 .nway_reset = usbnet_nway_reset,
371};
372
373static void dm9601_set_multicast(struct net_device *net)
374{
375 struct usbnet *dev = netdev_priv(net);
376 /* We use the 20 byte dev->data for our 8 byte filter buffer
377 * to avoid allocating memory that is tricky to free later */
378 u8 *hashes = (u8 *) & dev->data;
Peter Korsgaard33edded2008-03-18 23:16:54 +0100379 u8 rx_ctl = 0x31;
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100380
381 memset(hashes, 0x00, DM_MCAST_SIZE);
382 hashes[DM_MCAST_SIZE - 1] |= 0x80; /* broadcast address */
383
384 if (net->flags & IFF_PROMISC) {
385 rx_ctl |= 0x02;
Jiri Pirko2cc04d22010-02-05 02:51:24 +0000386 } else if (net->flags & IFF_ALLMULTI ||
387 netdev_mc_count(net) > DM_MAX_MCAST) {
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100388 rx_ctl |= 0x04;
Jiri Pirko2cc04d22010-02-05 02:51:24 +0000389 } else if (!netdev_mc_empty(net)) {
390 struct dev_mc_list *mc_list;
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100391
Jiri Pirko2cc04d22010-02-05 02:51:24 +0000392 netdev_for_each_mc_addr(mc_list, net) {
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100393 u32 crc = ether_crc(ETH_ALEN, mc_list->dmi_addr) >> 26;
394 hashes[crc >> 3] |= 1 << (crc & 0x7);
395 }
396 }
397
398 dm_write_async(dev, DM_MCAST_ADDR, DM_MCAST_SIZE, hashes);
399 dm_write_reg_async(dev, DM_RX_CTRL, rx_ctl);
400}
401
Wu Fengguang4b9f8ec2009-01-06 18:52:58 +0000402static void __dm9601_set_mac_address(struct usbnet *dev)
403{
404 dm_write_async(dev, DM_PHY_ADDR, ETH_ALEN, dev->net->dev_addr);
405}
406
Peter Korsgaard753dcfe2008-10-24 09:08:27 +0200407static int dm9601_set_mac_address(struct net_device *net, void *p)
408{
409 struct sockaddr *addr = p;
410 struct usbnet *dev = netdev_priv(net);
411
Wu Fengguangf52deb02009-01-08 10:47:01 -0800412 if (!is_valid_ether_addr(addr->sa_data)) {
413 dev_err(&net->dev, "not setting invalid mac address %pM\n",
414 addr->sa_data);
Peter Korsgaard753dcfe2008-10-24 09:08:27 +0200415 return -EINVAL;
Wu Fengguangf52deb02009-01-08 10:47:01 -0800416 }
Peter Korsgaard753dcfe2008-10-24 09:08:27 +0200417
418 memcpy(net->dev_addr, addr->sa_data, net->addr_len);
Wu Fengguang4b9f8ec2009-01-06 18:52:58 +0000419 __dm9601_set_mac_address(dev);
Peter Korsgaard753dcfe2008-10-24 09:08:27 +0200420
421 return 0;
422}
423
Stephen Hemmingerfe85ff82009-03-20 19:35:56 +0000424static const struct net_device_ops dm9601_netdev_ops = {
425 .ndo_open = usbnet_open,
426 .ndo_stop = usbnet_stop,
427 .ndo_start_xmit = usbnet_start_xmit,
428 .ndo_tx_timeout = usbnet_tx_timeout,
429 .ndo_change_mtu = usbnet_change_mtu,
430 .ndo_validate_addr = eth_validate_addr,
431 .ndo_do_ioctl = dm9601_ioctl,
432 .ndo_set_multicast_list = dm9601_set_multicast,
433 .ndo_set_mac_address = dm9601_set_mac_address,
434};
435
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100436static int dm9601_bind(struct usbnet *dev, struct usb_interface *intf)
437{
438 int ret;
Wu Fengguang20f10aa2009-01-06 10:55:10 -0800439 u8 mac[ETH_ALEN];
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100440
441 ret = usbnet_get_endpoints(dev, intf);
442 if (ret)
443 goto out;
444
Stephen Hemmingerfe85ff82009-03-20 19:35:56 +0000445 dev->net->netdev_ops = &dm9601_netdev_ops;
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100446 dev->net->ethtool_ops = &dm9601_ethtool_ops;
447 dev->net->hard_header_len += DM_TX_OVERHEAD;
448 dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len;
Peter Korsgaardf662fe52007-10-01 13:36:07 +0200449 dev->rx_urb_size = dev->net->mtu + ETH_HLEN + DM_RX_OVERHEAD;
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100450
451 dev->mii.dev = dev->net;
452 dev->mii.mdio_read = dm9601_mdio_read;
453 dev->mii.mdio_write = dm9601_mdio_write;
454 dev->mii.phy_id_mask = 0x1f;
455 dev->mii.reg_num_mask = 0x1f;
456
457 /* reset */
Peter Korsgaardb8f595862007-06-30 23:07:42 +0200458 dm_write_reg(dev, DM_NET_CTRL, 1);
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100459 udelay(20);
460
461 /* read MAC */
Wu Fengguang20f10aa2009-01-06 10:55:10 -0800462 if (dm_read(dev, DM_PHY_ADDR, ETH_ALEN, mac) < 0) {
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100463 printk(KERN_ERR "Error reading MAC address\n");
464 ret = -ENODEV;
465 goto out;
466 }
467
Wu Fengguang20f10aa2009-01-06 10:55:10 -0800468 /*
469 * Overwrite the auto-generated address only with good ones.
470 */
471 if (is_valid_ether_addr(mac))
472 memcpy(dev->net->dev_addr, mac, ETH_ALEN);
Wu Fengguangf52deb02009-01-08 10:47:01 -0800473 else {
474 printk(KERN_WARNING
475 "dm9601: No valid MAC address in EEPROM, using %pM\n",
476 dev->net->dev_addr);
Wu Fengguang4b9f8ec2009-01-06 18:52:58 +0000477 __dm9601_set_mac_address(dev);
Wu Fengguangf52deb02009-01-08 10:47:01 -0800478 }
Wu Fengguang20f10aa2009-01-06 10:55:10 -0800479
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100480 /* power up phy */
481 dm_write_reg(dev, DM_GPR_CTRL, 1);
482 dm_write_reg(dev, DM_GPR_DATA, 0);
483
484 /* receive broadcast packets */
485 dm9601_set_multicast(dev->net);
486
487 dm9601_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET);
488 dm9601_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
489 ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP);
490 mii_nway_restart(&dev->mii);
491
492out:
493 return ret;
494}
495
496static int dm9601_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
497{
498 u8 status;
499 int len;
500
501 /* format:
Peter Korsgaard61189c72009-05-13 10:09:53 +0000502 b1: rx status
503 b2: packet length (incl crc) low
504 b3: packet length (incl crc) high
505 b4..n-4: packet data
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100506 bn-3..bn: ethernet crc
507 */
508
509 if (unlikely(skb->len < DM_RX_OVERHEAD)) {
510 dev_err(&dev->udev->dev, "unexpected tiny rx frame\n");
511 return 0;
512 }
513
514 status = skb->data[0];
515 len = (skb->data[1] | (skb->data[2] << 8)) - 4;
516
517 if (unlikely(status & 0xbf)) {
Herbert Xu96121012009-06-29 16:50:51 +0000518 if (status & 0x01) dev->net->stats.rx_fifo_errors++;
519 if (status & 0x02) dev->net->stats.rx_crc_errors++;
520 if (status & 0x04) dev->net->stats.rx_frame_errors++;
521 if (status & 0x20) dev->net->stats.rx_missed_errors++;
522 if (status & 0x90) dev->net->stats.rx_length_errors++;
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100523 return 0;
524 }
525
526 skb_pull(skb, 3);
527 skb_trim(skb, len);
528
529 return 1;
530}
531
532static struct sk_buff *dm9601_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
533 gfp_t flags)
534{
535 int len;
536
537 /* format:
Peter Korsgaard61189c72009-05-13 10:09:53 +0000538 b1: packet length low
539 b2: packet length high
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100540 b3..n: packet data
541 */
542
Peter Korsgaard23de5592007-06-27 08:14:50 +0200543 len = skb->len;
544
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100545 if (skb_headroom(skb) < DM_TX_OVERHEAD) {
546 struct sk_buff *skb2;
547
548 skb2 = skb_copy_expand(skb, DM_TX_OVERHEAD, 0, flags);
549 dev_kfree_skb_any(skb);
550 skb = skb2;
551 if (!skb)
552 return NULL;
553 }
554
555 __skb_push(skb, DM_TX_OVERHEAD);
556
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100557 /* usbnet adds padding if length is a multiple of packet size
558 if so, adjust length value in header */
Peter Korsgaard23de5592007-06-27 08:14:50 +0200559 if ((skb->len % dev->maxpacket) == 0)
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100560 len++;
561
562 skb->data[0] = len;
563 skb->data[1] = len >> 8;
564
565 return skb;
566}
567
568static void dm9601_status(struct usbnet *dev, struct urb *urb)
569{
570 int link;
571 u8 *buf;
572
573 /* format:
574 b0: net status
575 b1: tx status 1
576 b2: tx status 2
577 b3: rx status
578 b4: rx overflow
579 b5: rx count
580 b6: tx count
581 b7: gpr
582 */
583
584 if (urb->actual_length < 8)
585 return;
586
587 buf = urb->transfer_buffer;
588
589 link = !!(buf[0] & 0x40);
590 if (netif_carrier_ok(dev->net) != link) {
591 if (link) {
592 netif_carrier_on(dev->net);
593 usbnet_defer_kevent (dev, EVENT_LINK_RESET);
594 }
595 else
596 netif_carrier_off(dev->net);
Joe Perches60b86752010-02-17 10:30:23 +0000597 netdev_dbg(dev->net, "Link Status is: %d\n", link);
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100598 }
599}
600
601static int dm9601_link_reset(struct usbnet *dev)
602{
603 struct ethtool_cmd ecmd;
604
605 mii_check_media(&dev->mii, 1, 1);
606 mii_ethtool_gset(&dev->mii, &ecmd);
607
Joe Perches60b86752010-02-17 10:30:23 +0000608 netdev_dbg(dev->net, "link_reset() speed: %d duplex: %d\n",
609 ecmd.speed, ecmd.duplex);
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100610
611 return 0;
612}
613
614static const struct driver_info dm9601_info = {
615 .description = "Davicom DM9601 USB Ethernet",
Ben Hutchings37e82732009-11-04 15:29:52 +0000616 .flags = FLAG_ETHER | FLAG_LINK_INTR,
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100617 .bind = dm9601_bind,
618 .rx_fixup = dm9601_rx_fixup,
619 .tx_fixup = dm9601_tx_fixup,
620 .status = dm9601_status,
621 .link_reset = dm9601_link_reset,
622 .reset = dm9601_link_reset,
623};
624
625static const struct usb_device_id products[] = {
626 {
YOSHIFUJI Hideaki6438ac22007-03-02 20:33:55 -0500627 USB_DEVICE(0x07aa, 0x9601), /* Corega FEther USB-TXC */
628 .driver_info = (unsigned long)&dm9601_info,
629 },
630 {
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100631 USB_DEVICE(0x0a46, 0x9601), /* Davicom USB-100 */
632 .driver_info = (unsigned long)&dm9601_info,
633 },
Jon Dowland6dc477f2007-03-11 20:03:03 +0000634 {
635 USB_DEVICE(0x0a46, 0x6688), /* ZT6688 USB NIC */
636 .driver_info = (unsigned long)&dm9601_info,
637 },
638 {
639 USB_DEVICE(0x0a46, 0x0268), /* ShanTou ST268 USB NIC */
640 .driver_info = (unsigned long)&dm9601_info,
641 },
Peter Korsgaarda06da752007-10-30 14:23:47 +0100642 {
643 USB_DEVICE(0x0a46, 0x8515), /* ADMtek ADM8515 USB NIC */
644 .driver_info = (unsigned long)&dm9601_info,
645 },
Peter Korsgaardb47b4b22008-03-18 23:16:53 +0100646 {
647 USB_DEVICE(0x0a47, 0x9601), /* Hirose USB-100 */
648 .driver_info = (unsigned long)&dm9601_info,
649 },
Peter Korsgaarda1a69c82009-03-03 23:48:16 -0800650 {
651 USB_DEVICE(0x0fe6, 0x8101), /* DM9601 USB to Fast Ethernet Adapter */
652 .driver_info = (unsigned long)&dm9601_info,
653 },
Janusz Krzysztofik06b71b62009-10-28 05:34:21 +0000654 {
655 USB_DEVICE(0x0a46, 0x9000), /* DM9000E */
656 .driver_info = (unsigned long)&dm9601_info,
657 },
Peter Korsgaardd0374f42007-02-16 17:03:54 +0100658 {}, // END
659};
660
661MODULE_DEVICE_TABLE(usb, products);
662
663static struct usb_driver dm9601_driver = {
664 .name = "dm9601",
665 .id_table = products,
666 .probe = usbnet_probe,
667 .disconnect = usbnet_disconnect,
668 .suspend = usbnet_suspend,
669 .resume = usbnet_resume,
670};
671
672static int __init dm9601_init(void)
673{
674 return usb_register(&dm9601_driver);
675}
676
677static void __exit dm9601_exit(void)
678{
679 usb_deregister(&dm9601_driver);
680}
681
682module_init(dm9601_init);
683module_exit(dm9601_exit);
684
685MODULE_AUTHOR("Peter Korsgaard <jacmet@sunsite.dk>");
686MODULE_DESCRIPTION("Davicom DM9601 USB 1.1 ethernet devices");
687MODULE_LICENSE("GPL");