Commit | Line | Data |
---|---|---|
d0374f4f | 1 | /* |
cabd0e3a | 2 | * Davicom DM96xx USB 10/100Mbps ethernet devices |
d0374f4f PK |
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> | |
686149f4 | 15 | #include <linux/stddef.h> |
d0374f4f PK |
16 | #include <linux/netdevice.h> |
17 | #include <linux/etherdevice.h> | |
18 | #include <linux/ethtool.h> | |
19 | #include <linux/mii.h> | |
20 | #include <linux/usb.h> | |
21 | #include <linux/crc32.h> | |
3692e94f | 22 | #include <linux/usb/usbnet.h> |
5a0e3ad6 | 23 | #include <linux/slab.h> |
d0374f4f PK |
24 | |
25 | /* datasheet: | |
98658bc9 | 26 | http://ptm2.cc.utu.fi/ftp/network/cards/DM9601/From_NET/DM9601-DS-P01-930914.pdf |
d0374f4f PK |
27 | */ |
28 | ||
29 | /* control requests */ | |
30 | #define DM_READ_REGS 0x00 | |
31 | #define DM_WRITE_REGS 0x01 | |
32 | #define DM_READ_MEMS 0x02 | |
33 | #define DM_WRITE_REG 0x03 | |
34 | #define DM_WRITE_MEMS 0x05 | |
35 | #define DM_WRITE_MEM 0x07 | |
36 | ||
37 | /* registers */ | |
38 | #define DM_NET_CTRL 0x00 | |
39 | #define DM_RX_CTRL 0x05 | |
40 | #define DM_SHARED_CTRL 0x0b | |
41 | #define DM_SHARED_ADDR 0x0c | |
42 | #define DM_SHARED_DATA 0x0d /* low + high */ | |
43 | #define DM_PHY_ADDR 0x10 /* 6 bytes */ | |
44 | #define DM_MCAST_ADDR 0x16 /* 8 bytes */ | |
45 | #define DM_GPR_CTRL 0x1e | |
46 | #define DM_GPR_DATA 0x1f | |
6642f91c PK |
47 | #define DM_CHIP_ID 0x2c |
48 | #define DM_MODE_CTRL 0x91 /* only on dm9620 */ | |
49 | ||
50 | /* chip id values */ | |
51 | #define ID_DM9601 0 | |
52 | #define ID_DM9620 1 | |
d0374f4f PK |
53 | |
54 | #define DM_MAX_MCAST 64 | |
55 | #define DM_MCAST_SIZE 8 | |
56 | #define DM_EEPROM_LEN 256 | |
57 | #define DM_TX_OVERHEAD 2 /* 2 byte header */ | |
58 | #define DM_RX_OVERHEAD 7 /* 3 byte header + 4 byte crc tail */ | |
59 | #define DM_TIMEOUT 1000 | |
60 | ||
d0374f4f PK |
61 | static int dm_read(struct usbnet *dev, u8 reg, u16 length, void *data) |
62 | { | |
24b1042c ML |
63 | int err; |
64 | err = usbnet_read_cmd(dev, DM_READ_REGS, | |
65 | USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
66 | 0, reg, data, length); | |
67 | if(err != length && err >= 0) | |
16d78bc2 | 68 | err = -EINVAL; |
16d78bc2 | 69 | return err; |
d0374f4f PK |
70 | } |
71 | ||
72 | static int dm_read_reg(struct usbnet *dev, u8 reg, u8 *value) | |
73 | { | |
74 | return dm_read(dev, reg, 1, value); | |
75 | } | |
76 | ||
77 | static int dm_write(struct usbnet *dev, u8 reg, u16 length, void *data) | |
78 | { | |
24b1042c ML |
79 | int err; |
80 | err = usbnet_write_cmd(dev, DM_WRITE_REGS, | |
81 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
82 | 0, reg, data, length); | |
83 | ||
16d78bc2 PK |
84 | if (err >= 0 && err < length) |
85 | err = -EINVAL; | |
16d78bc2 | 86 | return err; |
d0374f4f PK |
87 | } |
88 | ||
89 | static int dm_write_reg(struct usbnet *dev, u8 reg, u8 value) | |
90 | { | |
1b9c3a1b | 91 | return usbnet_write_cmd(dev, DM_WRITE_REG, |
24b1042c ML |
92 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
93 | value, reg, NULL, 0); | |
d0374f4f PK |
94 | } |
95 | ||
76660757 JK |
96 | static void dm_write_async(struct usbnet *dev, u8 reg, u16 length, |
97 | const void *data) | |
d0374f4f | 98 | { |
24b1042c ML |
99 | usbnet_write_cmd_async(dev, DM_WRITE_REGS, |
100 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
1b9c3a1b | 101 | 0, reg, data, length); |
ba734f34 PK |
102 | } |
103 | ||
104 | static void dm_write_reg_async(struct usbnet *dev, u8 reg, u8 value) | |
105 | { | |
1b9c3a1b TB |
106 | usbnet_write_cmd_async(dev, DM_WRITE_REG, |
107 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
108 | value, reg, NULL, 0); | |
d0374f4f PK |
109 | } |
110 | ||
eca1ad82 | 111 | static int dm_read_shared_word(struct usbnet *dev, int phy, u8 reg, __le16 *value) |
d0374f4f PK |
112 | { |
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++) { | |
15c8bb12 | 121 | u8 tmp = 0; |
d0374f4f PK |
122 | |
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) { | |
60b86755 | 134 | netdev_err(dev->net, "%s read timed out!\n", phy ? "phy" : "eeprom"); |
d0374f4f PK |
135 | 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 | ||
60b86755 JP |
142 | netdev_dbg(dev->net, "read shared %d 0x%02x returned 0x%04x, %d\n", |
143 | phy, reg, *value, ret); | |
d0374f4f PK |
144 | |
145 | out: | |
146 | mutex_unlock(&dev->phy_mutex); | |
147 | return ret; | |
148 | } | |
149 | ||
eca1ad82 | 150 | static int dm_write_shared_word(struct usbnet *dev, int phy, u8 reg, __le16 value) |
d0374f4f PK |
151 | { |
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); | |
e9162ab1 | 161 | dm_write_reg(dev, DM_SHARED_CTRL, phy ? 0x1a : 0x12); |
d0374f4f PK |
162 | |
163 | for (i = 0; i < DM_TIMEOUT; i++) { | |
15c8bb12 | 164 | u8 tmp = 0; |
d0374f4f PK |
165 | |
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) { | |
60b86755 | 177 | netdev_err(dev->net, "%s write timed out!\n", phy ? "phy" : "eeprom"); |
d0374f4f PK |
178 | ret = -EIO; |
179 | goto out; | |
180 | } | |
181 | ||
182 | dm_write_reg(dev, DM_SHARED_CTRL, 0x0); | |
183 | ||
184 | out: | |
185 | mutex_unlock(&dev->phy_mutex); | |
186 | return ret; | |
187 | } | |
188 | ||
189 | static 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 | ||
196 | static int dm9601_get_eeprom_len(struct net_device *dev) | |
197 | { | |
198 | return DM_EEPROM_LEN; | |
199 | } | |
200 | ||
201 | static int dm9601_get_eeprom(struct net_device *net, | |
202 | struct ethtool_eeprom *eeprom, u8 * data) | |
203 | { | |
204 | struct usbnet *dev = netdev_priv(net); | |
eca1ad82 | 205 | __le16 *ebuf = (__le16 *) data; |
d0374f4f PK |
206 | 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 | ||
220 | static int dm9601_mdio_read(struct net_device *netdev, int phy_id, int loc) | |
221 | { | |
222 | struct usbnet *dev = netdev_priv(netdev); | |
223 | ||
eca1ad82 | 224 | __le16 res; |
8f8abb86 | 225 | int err; |
d0374f4f PK |
226 | |
227 | if (phy_id) { | |
60b86755 | 228 | netdev_dbg(dev->net, "Only internal phy supported\n"); |
d0374f4f PK |
229 | return 0; |
230 | } | |
231 | ||
8f8abb86 JC |
232 | err = dm_read_shared_word(dev, 1, loc, &res); |
233 | if (err < 0) { | |
234 | netdev_err(dev->net, "MDIO read error: %d\n", err); | |
235 | return err; | |
236 | } | |
d0374f4f | 237 | |
60b86755 JP |
238 | netdev_dbg(dev->net, |
239 | "dm9601_mdio_read() phy_id=0x%02x, loc=0x%02x, returns=0x%04x\n", | |
240 | phy_id, loc, le16_to_cpu(res)); | |
d0374f4f PK |
241 | |
242 | return le16_to_cpu(res); | |
243 | } | |
244 | ||
245 | static void dm9601_mdio_write(struct net_device *netdev, int phy_id, int loc, | |
246 | int val) | |
247 | { | |
248 | struct usbnet *dev = netdev_priv(netdev); | |
eca1ad82 | 249 | __le16 res = cpu_to_le16(val); |
d0374f4f PK |
250 | |
251 | if (phy_id) { | |
60b86755 | 252 | netdev_dbg(dev->net, "Only internal phy supported\n"); |
d0374f4f PK |
253 | return; |
254 | } | |
255 | ||
60b86755 JP |
256 | netdev_dbg(dev->net, "dm9601_mdio_write() phy_id=0x%02x, loc=0x%02x, val=0x%04x\n", |
257 | phy_id, loc, val); | |
d0374f4f PK |
258 | |
259 | dm_write_shared_word(dev, 1, loc, res); | |
260 | } | |
261 | ||
262 | static void dm9601_get_drvinfo(struct net_device *net, | |
263 | struct ethtool_drvinfo *info) | |
264 | { | |
265 | /* Inherit standard device info */ | |
266 | usbnet_get_drvinfo(net, info); | |
d0374f4f PK |
267 | } |
268 | ||
269 | static u32 dm9601_get_link(struct net_device *net) | |
270 | { | |
271 | struct usbnet *dev = netdev_priv(net); | |
272 | ||
273 | return mii_link_ok(&dev->mii); | |
274 | } | |
275 | ||
276 | static int dm9601_ioctl(struct net_device *net, struct ifreq *rq, int cmd) | |
277 | { | |
278 | struct usbnet *dev = netdev_priv(net); | |
279 | ||
280 | return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL); | |
281 | } | |
282 | ||
0fc0b732 | 283 | static const struct ethtool_ops dm9601_ethtool_ops = { |
d0374f4f PK |
284 | .get_drvinfo = dm9601_get_drvinfo, |
285 | .get_link = dm9601_get_link, | |
286 | .get_msglevel = usbnet_get_msglevel, | |
287 | .set_msglevel = usbnet_set_msglevel, | |
288 | .get_eeprom_len = dm9601_get_eeprom_len, | |
289 | .get_eeprom = dm9601_get_eeprom, | |
d0374f4f | 290 | .nway_reset = usbnet_nway_reset, |
77651900 ON |
291 | .get_link_ksettings = usbnet_get_link_ksettings_mii, |
292 | .set_link_ksettings = usbnet_set_link_ksettings_mii, | |
d0374f4f PK |
293 | }; |
294 | ||
295 | static void dm9601_set_multicast(struct net_device *net) | |
296 | { | |
297 | struct usbnet *dev = netdev_priv(net); | |
298 | /* We use the 20 byte dev->data for our 8 byte filter buffer | |
299 | * to avoid allocating memory that is tricky to free later */ | |
300 | u8 *hashes = (u8 *) & dev->data; | |
33eddedb | 301 | u8 rx_ctl = 0x31; |
d0374f4f PK |
302 | |
303 | memset(hashes, 0x00, DM_MCAST_SIZE); | |
304 | hashes[DM_MCAST_SIZE - 1] |= 0x80; /* broadcast address */ | |
305 | ||
306 | if (net->flags & IFF_PROMISC) { | |
307 | rx_ctl |= 0x02; | |
2cc04d27 JP |
308 | } else if (net->flags & IFF_ALLMULTI || |
309 | netdev_mc_count(net) > DM_MAX_MCAST) { | |
bf0ea638 | 310 | rx_ctl |= 0x08; |
2cc04d27 | 311 | } else if (!netdev_mc_empty(net)) { |
22bedad3 | 312 | struct netdev_hw_addr *ha; |
d0374f4f | 313 | |
22bedad3 JP |
314 | netdev_for_each_mc_addr(ha, net) { |
315 | u32 crc = ether_crc(ETH_ALEN, ha->addr) >> 26; | |
d0374f4f PK |
316 | hashes[crc >> 3] |= 1 << (crc & 0x7); |
317 | } | |
318 | } | |
319 | ||
320 | dm_write_async(dev, DM_MCAST_ADDR, DM_MCAST_SIZE, hashes); | |
321 | dm_write_reg_async(dev, DM_RX_CTRL, rx_ctl); | |
322 | } | |
323 | ||
4b9f8ec6 WF |
324 | static void __dm9601_set_mac_address(struct usbnet *dev) |
325 | { | |
326 | dm_write_async(dev, DM_PHY_ADDR, ETH_ALEN, dev->net->dev_addr); | |
327 | } | |
328 | ||
753dcfee PK |
329 | static int dm9601_set_mac_address(struct net_device *net, void *p) |
330 | { | |
331 | struct sockaddr *addr = p; | |
332 | struct usbnet *dev = netdev_priv(net); | |
333 | ||
f52deb0e WF |
334 | if (!is_valid_ether_addr(addr->sa_data)) { |
335 | dev_err(&net->dev, "not setting invalid mac address %pM\n", | |
336 | addr->sa_data); | |
753dcfee | 337 | return -EINVAL; |
f52deb0e | 338 | } |
753dcfee | 339 | |
49ed8dde | 340 | eth_hw_addr_set(net, addr->sa_data); |
4b9f8ec6 | 341 | __dm9601_set_mac_address(dev); |
753dcfee PK |
342 | |
343 | return 0; | |
344 | } | |
345 | ||
fe85ff82 SH |
346 | static const struct net_device_ops dm9601_netdev_ops = { |
347 | .ndo_open = usbnet_open, | |
348 | .ndo_stop = usbnet_stop, | |
349 | .ndo_start_xmit = usbnet_start_xmit, | |
350 | .ndo_tx_timeout = usbnet_tx_timeout, | |
351 | .ndo_change_mtu = usbnet_change_mtu, | |
323955a0 | 352 | .ndo_get_stats64 = dev_get_tstats64, |
fe85ff82 | 353 | .ndo_validate_addr = eth_validate_addr, |
a7605370 | 354 | .ndo_eth_ioctl = dm9601_ioctl, |
afc4b13d | 355 | .ndo_set_rx_mode = dm9601_set_multicast, |
fe85ff82 SH |
356 | .ndo_set_mac_address = dm9601_set_mac_address, |
357 | }; | |
358 | ||
d0374f4f PK |
359 | static int dm9601_bind(struct usbnet *dev, struct usb_interface *intf) |
360 | { | |
361 | int ret; | |
6642f91c | 362 | u8 mac[ETH_ALEN], id; |
d0374f4f PK |
363 | |
364 | ret = usbnet_get_endpoints(dev, intf); | |
365 | if (ret) | |
366 | goto out; | |
367 | ||
fe85ff82 | 368 | dev->net->netdev_ops = &dm9601_netdev_ops; |
d0374f4f PK |
369 | dev->net->ethtool_ops = &dm9601_ethtool_ops; |
370 | dev->net->hard_header_len += DM_TX_OVERHEAD; | |
371 | dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len; | |
407900cf PK |
372 | |
373 | /* dm9620/21a require room for 4 byte padding, even in dm9601 | |
374 | * mode, so we need +1 to be able to receive full size | |
375 | * ethernet frames. | |
376 | */ | |
377 | dev->rx_urb_size = dev->net->mtu + ETH_HLEN + DM_RX_OVERHEAD + 1; | |
d0374f4f PK |
378 | |
379 | dev->mii.dev = dev->net; | |
380 | dev->mii.mdio_read = dm9601_mdio_read; | |
381 | dev->mii.mdio_write = dm9601_mdio_write; | |
382 | dev->mii.phy_id_mask = 0x1f; | |
383 | dev->mii.reg_num_mask = 0x1f; | |
384 | ||
385 | /* reset */ | |
b8f59586 | 386 | dm_write_reg(dev, DM_NET_CTRL, 1); |
d0374f4f PK |
387 | udelay(20); |
388 | ||
389 | /* read MAC */ | |
20f10aa0 | 390 | if (dm_read(dev, DM_PHY_ADDR, ETH_ALEN, mac) < 0) { |
d0374f4f PK |
391 | printk(KERN_ERR "Error reading MAC address\n"); |
392 | ret = -ENODEV; | |
393 | goto out; | |
394 | } | |
395 | ||
20f10aa0 WF |
396 | /* |
397 | * Overwrite the auto-generated address only with good ones. | |
398 | */ | |
399 | if (is_valid_ether_addr(mac)) | |
16813717 | 400 | eth_hw_addr_set(dev->net, mac); |
f52deb0e WF |
401 | else { |
402 | printk(KERN_WARNING | |
403 | "dm9601: No valid MAC address in EEPROM, using %pM\n", | |
404 | dev->net->dev_addr); | |
4b9f8ec6 | 405 | __dm9601_set_mac_address(dev); |
f52deb0e | 406 | } |
20f10aa0 | 407 | |
6642f91c PK |
408 | if (dm_read_reg(dev, DM_CHIP_ID, &id) < 0) { |
409 | netdev_err(dev->net, "Error reading chip ID\n"); | |
410 | ret = -ENODEV; | |
411 | goto out; | |
412 | } | |
413 | ||
414 | /* put dm9620 devices in dm9601 mode */ | |
415 | if (id == ID_DM9620) { | |
416 | u8 mode; | |
417 | ||
418 | if (dm_read_reg(dev, DM_MODE_CTRL, &mode) < 0) { | |
419 | netdev_err(dev->net, "Error reading MODE_CTRL\n"); | |
420 | ret = -ENODEV; | |
421 | goto out; | |
422 | } | |
423 | dm_write_reg(dev, DM_MODE_CTRL, mode & 0x7f); | |
424 | } | |
425 | ||
d0374f4f PK |
426 | /* power up phy */ |
427 | dm_write_reg(dev, DM_GPR_CTRL, 1); | |
428 | dm_write_reg(dev, DM_GPR_DATA, 0); | |
429 | ||
430 | /* receive broadcast packets */ | |
431 | dm9601_set_multicast(dev->net); | |
432 | ||
433 | dm9601_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET); | |
434 | dm9601_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE, | |
435 | ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP); | |
436 | mii_nway_restart(&dev->mii); | |
437 | ||
438 | out: | |
439 | return ret; | |
440 | } | |
441 | ||
442 | static int dm9601_rx_fixup(struct usbnet *dev, struct sk_buff *skb) | |
443 | { | |
444 | u8 status; | |
445 | int len; | |
446 | ||
447 | /* format: | |
61189c78 PK |
448 | b1: rx status |
449 | b2: packet length (incl crc) low | |
450 | b3: packet length (incl crc) high | |
451 | b4..n-4: packet data | |
d0374f4f PK |
452 | bn-3..bn: ethernet crc |
453 | */ | |
454 | ||
455 | if (unlikely(skb->len < DM_RX_OVERHEAD)) { | |
456 | dev_err(&dev->udev->dev, "unexpected tiny rx frame\n"); | |
457 | return 0; | |
458 | } | |
459 | ||
460 | status = skb->data[0]; | |
461 | len = (skb->data[1] | (skb->data[2] << 8)) - 4; | |
462 | ||
463 | if (unlikely(status & 0xbf)) { | |
9612101c HX |
464 | if (status & 0x01) dev->net->stats.rx_fifo_errors++; |
465 | if (status & 0x02) dev->net->stats.rx_crc_errors++; | |
466 | if (status & 0x04) dev->net->stats.rx_frame_errors++; | |
467 | if (status & 0x20) dev->net->stats.rx_missed_errors++; | |
468 | if (status & 0x90) dev->net->stats.rx_length_errors++; | |
d0374f4f PK |
469 | return 0; |
470 | } | |
471 | ||
472 | skb_pull(skb, 3); | |
473 | skb_trim(skb, len); | |
474 | ||
475 | return 1; | |
476 | } | |
477 | ||
478 | static struct sk_buff *dm9601_tx_fixup(struct usbnet *dev, struct sk_buff *skb, | |
479 | gfp_t flags) | |
480 | { | |
4263c86d | 481 | int len, pad; |
d0374f4f PK |
482 | |
483 | /* format: | |
61189c78 PK |
484 | b1: packet length low |
485 | b2: packet length high | |
d0374f4f PK |
486 | b3..n: packet data |
487 | */ | |
488 | ||
4263c86d PK |
489 | len = skb->len + DM_TX_OVERHEAD; |
490 | ||
491 | /* workaround for dm962x errata with tx fifo getting out of | |
492 | * sync if a USB bulk transfer retry happens right after a | |
493 | * packet with odd / maxpacket length by adding up to 3 bytes | |
494 | * padding. | |
495 | */ | |
496 | while ((len & 1) || !(len % dev->maxpacket)) | |
497 | len++; | |
23de559b | 498 | |
4263c86d PK |
499 | len -= DM_TX_OVERHEAD; /* hw header doesn't count as part of length */ |
500 | pad = len - skb->len; | |
501 | ||
502 | if (skb_headroom(skb) < DM_TX_OVERHEAD || skb_tailroom(skb) < pad) { | |
d0374f4f PK |
503 | struct sk_buff *skb2; |
504 | ||
4263c86d | 505 | skb2 = skb_copy_expand(skb, DM_TX_OVERHEAD, pad, flags); |
d0374f4f PK |
506 | dev_kfree_skb_any(skb); |
507 | skb = skb2; | |
508 | if (!skb) | |
509 | return NULL; | |
510 | } | |
511 | ||
512 | __skb_push(skb, DM_TX_OVERHEAD); | |
513 | ||
4263c86d PK |
514 | if (pad) { |
515 | memset(skb->data + skb->len, 0, pad); | |
516 | __skb_put(skb, pad); | |
517 | } | |
d0374f4f PK |
518 | |
519 | skb->data[0] = len; | |
520 | skb->data[1] = len >> 8; | |
521 | ||
522 | return skb; | |
523 | } | |
524 | ||
525 | static void dm9601_status(struct usbnet *dev, struct urb *urb) | |
526 | { | |
527 | int link; | |
528 | u8 *buf; | |
529 | ||
530 | /* format: | |
531 | b0: net status | |
532 | b1: tx status 1 | |
533 | b2: tx status 2 | |
534 | b3: rx status | |
535 | b4: rx overflow | |
536 | b5: rx count | |
537 | b6: tx count | |
538 | b7: gpr | |
539 | */ | |
540 | ||
541 | if (urb->actual_length < 8) | |
542 | return; | |
543 | ||
544 | buf = urb->transfer_buffer; | |
545 | ||
546 | link = !!(buf[0] & 0x40); | |
547 | if (netif_carrier_ok(dev->net) != link) { | |
c10b1710 | 548 | usbnet_link_change(dev, link, 1); |
60b86755 | 549 | netdev_dbg(dev->net, "Link Status is: %d\n", link); |
d0374f4f PK |
550 | } |
551 | } | |
552 | ||
553 | static int dm9601_link_reset(struct usbnet *dev) | |
554 | { | |
8ae6daca | 555 | struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET }; |
d0374f4f PK |
556 | |
557 | mii_check_media(&dev->mii, 1, 1); | |
558 | mii_ethtool_gset(&dev->mii, &ecmd); | |
559 | ||
8ae6daca DD |
560 | netdev_dbg(dev->net, "link_reset() speed: %u duplex: %d\n", |
561 | ethtool_cmd_speed(&ecmd), ecmd.duplex); | |
d0374f4f PK |
562 | |
563 | return 0; | |
564 | } | |
565 | ||
566 | static const struct driver_info dm9601_info = { | |
cabd0e3a | 567 | .description = "Davicom DM96xx USB 10/100 Ethernet", |
37e8273c | 568 | .flags = FLAG_ETHER | FLAG_LINK_INTR, |
d0374f4f PK |
569 | .bind = dm9601_bind, |
570 | .rx_fixup = dm9601_rx_fixup, | |
571 | .tx_fixup = dm9601_tx_fixup, | |
572 | .status = dm9601_status, | |
573 | .link_reset = dm9601_link_reset, | |
574 | .reset = dm9601_link_reset, | |
575 | }; | |
576 | ||
577 | static const struct usb_device_id products[] = { | |
6438ac26 YH |
578 | { |
579 | USB_DEVICE(0x07aa, 0x9601), /* Corega FEther USB-TXC */ | |
580 | .driver_info = (unsigned long)&dm9601_info, | |
581 | }, | |
d0374f4f PK |
582 | { |
583 | USB_DEVICE(0x0a46, 0x9601), /* Davicom USB-100 */ | |
584 | .driver_info = (unsigned long)&dm9601_info, | |
585 | }, | |
6dc477f3 JD |
586 | { |
587 | USB_DEVICE(0x0a46, 0x6688), /* ZT6688 USB NIC */ | |
588 | .driver_info = (unsigned long)&dm9601_info, | |
589 | }, | |
590 | { | |
591 | USB_DEVICE(0x0a46, 0x0268), /* ShanTou ST268 USB NIC */ | |
592 | .driver_info = (unsigned long)&dm9601_info, | |
593 | }, | |
a06da754 PK |
594 | { |
595 | USB_DEVICE(0x0a46, 0x8515), /* ADMtek ADM8515 USB NIC */ | |
596 | .driver_info = (unsigned long)&dm9601_info, | |
597 | }, | |
b47b4b22 PK |
598 | { |
599 | USB_DEVICE(0x0a47, 0x9601), /* Hirose USB-100 */ | |
a1a69c8d PK |
600 | .driver_info = (unsigned long)&dm9601_info, |
601 | }, | |
602 | { | |
603 | USB_DEVICE(0x0fe6, 0x8101), /* DM9601 USB to Fast Ethernet Adapter */ | |
b47b4b22 PK |
604 | .driver_info = (unsigned long)&dm9601_info, |
605 | }, | |
67158ceb SH |
606 | { |
607 | USB_DEVICE(0x0fe6, 0x9700), /* DM9601 USB to Fast Ethernet Adapter */ | |
608 | .driver_info = (unsigned long)&dm9601_info, | |
609 | }, | |
06b71b65 JK |
610 | { |
611 | USB_DEVICE(0x0a46, 0x9000), /* DM9000E */ | |
612 | .driver_info = (unsigned long)&dm9601_info, | |
613 | }, | |
6642f91c PK |
614 | { |
615 | USB_DEVICE(0x0a46, 0x9620), /* DM9620 USB to Fast Ethernet Adapter */ | |
616 | .driver_info = (unsigned long)&dm9601_info, | |
617 | }, | |
3b387892 PK |
618 | { |
619 | USB_DEVICE(0x0a46, 0x9621), /* DM9621A USB to Fast Ethernet Adapter */ | |
620 | .driver_info = (unsigned long)&dm9601_info, | |
621 | }, | |
7c4b5175 PK |
622 | { |
623 | USB_DEVICE(0x0a46, 0x9622), /* DM9622 USB to Fast Ethernet Adapter */ | |
624 | .driver_info = (unsigned long)&dm9601_info, | |
625 | }, | |
626 | { | |
627 | USB_DEVICE(0x0a46, 0x0269), /* DM962OA USB to Fast Ethernet Adapter */ | |
628 | .driver_info = (unsigned long)&dm9601_info, | |
629 | }, | |
630 | { | |
631 | USB_DEVICE(0x0a46, 0x1269), /* DM9621A USB to Fast Ethernet Adapter */ | |
632 | .driver_info = (unsigned long)&dm9601_info, | |
633 | }, | |
a609d025 KL |
634 | { |
635 | USB_DEVICE(0x0586, 0x3427), /* ZyXEL Keenetic Plus DSL xDSL modem */ | |
636 | .driver_info = (unsigned long)&dm9601_info, | |
637 | }, | |
d0374f4f PK |
638 | {}, // END |
639 | }; | |
640 | ||
641 | MODULE_DEVICE_TABLE(usb, products); | |
642 | ||
643 | static struct usb_driver dm9601_driver = { | |
644 | .name = "dm9601", | |
645 | .id_table = products, | |
646 | .probe = usbnet_probe, | |
647 | .disconnect = usbnet_disconnect, | |
648 | .suspend = usbnet_suspend, | |
649 | .resume = usbnet_resume, | |
e1f12eb6 | 650 | .disable_hub_initiated_lpm = 1, |
d0374f4f PK |
651 | }; |
652 | ||
d632eb1b | 653 | module_usb_driver(dm9601_driver); |
d0374f4f PK |
654 | |
655 | MODULE_AUTHOR("Peter Korsgaard <jacmet@sunsite.dk>"); | |
cabd0e3a | 656 | MODULE_DESCRIPTION("Davicom DM96xx USB 10/100 ethernet devices"); |
d0374f4f | 657 | MODULE_LICENSE("GPL"); |