Commit | Line | Data |
---|---|---|
d0374f4f PK |
1 | /* |
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> | |
686149f4 | 15 | #include <linux/stddef.h> |
d0374f4f PK |
16 | #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> | |
3692e94f | 23 | #include <linux/usb/usbnet.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 | |
47 | ||
48 | #define DM_MAX_MCAST 64 | |
49 | #define DM_MCAST_SIZE 8 | |
50 | #define DM_EEPROM_LEN 256 | |
51 | #define DM_TX_OVERHEAD 2 /* 2 byte header */ | |
52 | #define DM_RX_OVERHEAD 7 /* 3 byte header + 4 byte crc tail */ | |
53 | #define DM_TIMEOUT 1000 | |
54 | ||
55 | ||
56 | static int dm_read(struct usbnet *dev, u8 reg, u16 length, void *data) | |
57 | { | |
16d78bc2 PK |
58 | void *buf; |
59 | int err = -ENOMEM; | |
60 | ||
d0374f4f | 61 | devdbg(dev, "dm_read() reg=0x%02x length=%d", reg, length); |
16d78bc2 PK |
62 | |
63 | buf = kmalloc(length, GFP_KERNEL); | |
64 | if (!buf) | |
65 | goto out; | |
66 | ||
67 | err = usb_control_msg(dev->udev, | |
68 | usb_rcvctrlpipe(dev->udev, 0), | |
69 | DM_READ_REGS, | |
70 | USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
71 | 0, reg, buf, length, USB_CTRL_SET_TIMEOUT); | |
72 | if (err == length) | |
73 | memcpy(data, buf, length); | |
74 | else if (err >= 0) | |
75 | err = -EINVAL; | |
76 | kfree(buf); | |
77 | ||
78 | out: | |
79 | return err; | |
d0374f4f PK |
80 | } |
81 | ||
82 | static int dm_read_reg(struct usbnet *dev, u8 reg, u8 *value) | |
83 | { | |
84 | return dm_read(dev, reg, 1, value); | |
85 | } | |
86 | ||
87 | static int dm_write(struct usbnet *dev, u8 reg, u16 length, void *data) | |
88 | { | |
16d78bc2 PK |
89 | void *buf = NULL; |
90 | int err = -ENOMEM; | |
91 | ||
d0374f4f | 92 | devdbg(dev, "dm_write() reg=0x%02x, length=%d", reg, length); |
16d78bc2 PK |
93 | |
94 | if (data) { | |
95 | buf = kmalloc(length, GFP_KERNEL); | |
96 | if (!buf) | |
97 | goto out; | |
98 | memcpy(buf, data, length); | |
99 | } | |
100 | ||
101 | err = usb_control_msg(dev->udev, | |
102 | usb_sndctrlpipe(dev->udev, 0), | |
103 | DM_WRITE_REGS, | |
104 | USB_DIR_OUT | USB_TYPE_VENDOR |USB_RECIP_DEVICE, | |
105 | 0, reg, buf, length, USB_CTRL_SET_TIMEOUT); | |
106 | kfree(buf); | |
107 | if (err >= 0 && err < length) | |
108 | err = -EINVAL; | |
109 | out: | |
110 | return err; | |
d0374f4f PK |
111 | } |
112 | ||
113 | static int dm_write_reg(struct usbnet *dev, u8 reg, u8 value) | |
114 | { | |
115 | devdbg(dev, "dm_write_reg() reg=0x%02x, value=0x%02x", reg, value); | |
116 | return usb_control_msg(dev->udev, | |
117 | usb_sndctrlpipe(dev->udev, 0), | |
118 | DM_WRITE_REG, | |
119 | USB_DIR_OUT | USB_TYPE_VENDOR |USB_RECIP_DEVICE, | |
686149f4 | 120 | value, reg, NULL, 0, USB_CTRL_SET_TIMEOUT); |
d0374f4f PK |
121 | } |
122 | ||
123 | static void dm_write_async_callback(struct urb *urb) | |
124 | { | |
125 | struct usb_ctrlrequest *req = (struct usb_ctrlrequest *)urb->context; | |
c94cb314 | 126 | int status = urb->status; |
d0374f4f | 127 | |
c94cb314 | 128 | if (status < 0) |
77b69015 | 129 | printk(KERN_DEBUG "dm_write_async_callback() failed with %d\n", |
c94cb314 | 130 | status); |
d0374f4f PK |
131 | |
132 | kfree(req); | |
133 | usb_free_urb(urb); | |
134 | } | |
135 | ||
ba734f34 PK |
136 | static void dm_write_async_helper(struct usbnet *dev, u8 reg, u8 value, |
137 | u16 length, void *data) | |
d0374f4f PK |
138 | { |
139 | struct usb_ctrlrequest *req; | |
140 | struct urb *urb; | |
141 | int status; | |
142 | ||
d0374f4f PK |
143 | urb = usb_alloc_urb(0, GFP_ATOMIC); |
144 | if (!urb) { | |
ba734f34 | 145 | deverr(dev, "Error allocating URB in dm_write_async_helper!"); |
d0374f4f PK |
146 | return; |
147 | } | |
148 | ||
149 | req = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC); | |
150 | if (!req) { | |
151 | deverr(dev, "Failed to allocate memory for control request"); | |
152 | usb_free_urb(urb); | |
153 | return; | |
154 | } | |
155 | ||
156 | req->bRequestType = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE; | |
ba734f34 PK |
157 | req->bRequest = length ? DM_WRITE_REGS : DM_WRITE_REG; |
158 | req->wValue = cpu_to_le16(value); | |
d0374f4f PK |
159 | req->wIndex = cpu_to_le16(reg); |
160 | req->wLength = cpu_to_le16(length); | |
161 | ||
162 | usb_fill_control_urb(urb, dev->udev, | |
163 | usb_sndctrlpipe(dev->udev, 0), | |
164 | (void *)req, data, length, | |
165 | dm_write_async_callback, req); | |
166 | ||
167 | status = usb_submit_urb(urb, GFP_ATOMIC); | |
168 | if (status < 0) { | |
169 | deverr(dev, "Error submitting the control message: status=%d", | |
170 | status); | |
171 | kfree(req); | |
172 | usb_free_urb(urb); | |
173 | } | |
174 | } | |
175 | ||
ba734f34 | 176 | static void dm_write_async(struct usbnet *dev, u8 reg, u16 length, void *data) |
d0374f4f | 177 | { |
ba734f34 | 178 | devdbg(dev, "dm_write_async() reg=0x%02x length=%d", reg, length); |
d0374f4f | 179 | |
ba734f34 PK |
180 | dm_write_async_helper(dev, reg, 0, length, data); |
181 | } | |
182 | ||
183 | static void dm_write_reg_async(struct usbnet *dev, u8 reg, u8 value) | |
184 | { | |
d0374f4f PK |
185 | devdbg(dev, "dm_write_reg_async() reg=0x%02x value=0x%02x", |
186 | reg, value); | |
187 | ||
ba734f34 | 188 | dm_write_async_helper(dev, reg, value, 0, NULL); |
d0374f4f PK |
189 | } |
190 | ||
eca1ad82 | 191 | static int dm_read_shared_word(struct usbnet *dev, int phy, u8 reg, __le16 *value) |
d0374f4f PK |
192 | { |
193 | int ret, i; | |
194 | ||
195 | mutex_lock(&dev->phy_mutex); | |
196 | ||
197 | dm_write_reg(dev, DM_SHARED_ADDR, phy ? (reg | 0x40) : reg); | |
198 | dm_write_reg(dev, DM_SHARED_CTRL, phy ? 0xc : 0x4); | |
199 | ||
200 | for (i = 0; i < DM_TIMEOUT; i++) { | |
201 | u8 tmp; | |
202 | ||
203 | udelay(1); | |
204 | ret = dm_read_reg(dev, DM_SHARED_CTRL, &tmp); | |
205 | if (ret < 0) | |
206 | goto out; | |
207 | ||
208 | /* ready */ | |
209 | if ((tmp & 1) == 0) | |
210 | break; | |
211 | } | |
212 | ||
213 | if (i == DM_TIMEOUT) { | |
214 | deverr(dev, "%s read timed out!", phy ? "phy" : "eeprom"); | |
215 | ret = -EIO; | |
216 | goto out; | |
217 | } | |
218 | ||
219 | dm_write_reg(dev, DM_SHARED_CTRL, 0x0); | |
220 | ret = dm_read(dev, DM_SHARED_DATA, 2, value); | |
221 | ||
222 | devdbg(dev, "read shared %d 0x%02x returned 0x%04x, %d", | |
223 | phy, reg, *value, ret); | |
224 | ||
225 | out: | |
226 | mutex_unlock(&dev->phy_mutex); | |
227 | return ret; | |
228 | } | |
229 | ||
eca1ad82 | 230 | static int dm_write_shared_word(struct usbnet *dev, int phy, u8 reg, __le16 value) |
d0374f4f PK |
231 | { |
232 | int ret, i; | |
233 | ||
234 | mutex_lock(&dev->phy_mutex); | |
235 | ||
236 | ret = dm_write(dev, DM_SHARED_DATA, 2, &value); | |
237 | if (ret < 0) | |
238 | goto out; | |
239 | ||
240 | dm_write_reg(dev, DM_SHARED_ADDR, phy ? (reg | 0x40) : reg); | |
241 | dm_write_reg(dev, DM_SHARED_CTRL, phy ? 0x1c : 0x14); | |
242 | ||
243 | for (i = 0; i < DM_TIMEOUT; i++) { | |
244 | u8 tmp; | |
245 | ||
246 | udelay(1); | |
247 | ret = dm_read_reg(dev, DM_SHARED_CTRL, &tmp); | |
248 | if (ret < 0) | |
249 | goto out; | |
250 | ||
251 | /* ready */ | |
252 | if ((tmp & 1) == 0) | |
253 | break; | |
254 | } | |
255 | ||
256 | if (i == DM_TIMEOUT) { | |
257 | deverr(dev, "%s write timed out!", phy ? "phy" : "eeprom"); | |
258 | ret = -EIO; | |
259 | goto out; | |
260 | } | |
261 | ||
262 | dm_write_reg(dev, DM_SHARED_CTRL, 0x0); | |
263 | ||
264 | out: | |
265 | mutex_unlock(&dev->phy_mutex); | |
266 | return ret; | |
267 | } | |
268 | ||
269 | static int dm_read_eeprom_word(struct usbnet *dev, u8 offset, void *value) | |
270 | { | |
271 | return dm_read_shared_word(dev, 0, offset, value); | |
272 | } | |
273 | ||
274 | ||
275 | ||
276 | static int dm9601_get_eeprom_len(struct net_device *dev) | |
277 | { | |
278 | return DM_EEPROM_LEN; | |
279 | } | |
280 | ||
281 | static int dm9601_get_eeprom(struct net_device *net, | |
282 | struct ethtool_eeprom *eeprom, u8 * data) | |
283 | { | |
284 | struct usbnet *dev = netdev_priv(net); | |
eca1ad82 | 285 | __le16 *ebuf = (__le16 *) data; |
d0374f4f PK |
286 | int i; |
287 | ||
288 | /* access is 16bit */ | |
289 | if ((eeprom->offset % 2) || (eeprom->len % 2)) | |
290 | return -EINVAL; | |
291 | ||
292 | for (i = 0; i < eeprom->len / 2; i++) { | |
293 | if (dm_read_eeprom_word(dev, eeprom->offset / 2 + i, | |
294 | &ebuf[i]) < 0) | |
295 | return -EINVAL; | |
296 | } | |
297 | return 0; | |
298 | } | |
299 | ||
300 | static int dm9601_mdio_read(struct net_device *netdev, int phy_id, int loc) | |
301 | { | |
302 | struct usbnet *dev = netdev_priv(netdev); | |
303 | ||
eca1ad82 | 304 | __le16 res; |
d0374f4f PK |
305 | |
306 | if (phy_id) { | |
307 | devdbg(dev, "Only internal phy supported"); | |
308 | return 0; | |
309 | } | |
310 | ||
311 | dm_read_shared_word(dev, 1, loc, &res); | |
312 | ||
313 | devdbg(dev, | |
314 | "dm9601_mdio_read() phy_id=0x%02x, loc=0x%02x, returns=0x%04x", | |
315 | phy_id, loc, le16_to_cpu(res)); | |
316 | ||
317 | return le16_to_cpu(res); | |
318 | } | |
319 | ||
320 | static void dm9601_mdio_write(struct net_device *netdev, int phy_id, int loc, | |
321 | int val) | |
322 | { | |
323 | struct usbnet *dev = netdev_priv(netdev); | |
eca1ad82 | 324 | __le16 res = cpu_to_le16(val); |
d0374f4f PK |
325 | |
326 | if (phy_id) { | |
327 | devdbg(dev, "Only internal phy supported"); | |
328 | return; | |
329 | } | |
330 | ||
331 | devdbg(dev,"dm9601_mdio_write() phy_id=0x%02x, loc=0x%02x, val=0x%04x", | |
332 | phy_id, loc, val); | |
333 | ||
334 | dm_write_shared_word(dev, 1, loc, res); | |
335 | } | |
336 | ||
337 | static void dm9601_get_drvinfo(struct net_device *net, | |
338 | struct ethtool_drvinfo *info) | |
339 | { | |
340 | /* Inherit standard device info */ | |
341 | usbnet_get_drvinfo(net, info); | |
342 | info->eedump_len = DM_EEPROM_LEN; | |
343 | } | |
344 | ||
345 | static u32 dm9601_get_link(struct net_device *net) | |
346 | { | |
347 | struct usbnet *dev = netdev_priv(net); | |
348 | ||
349 | return mii_link_ok(&dev->mii); | |
350 | } | |
351 | ||
352 | static int dm9601_ioctl(struct net_device *net, struct ifreq *rq, int cmd) | |
353 | { | |
354 | struct usbnet *dev = netdev_priv(net); | |
355 | ||
356 | return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL); | |
357 | } | |
358 | ||
359 | static struct ethtool_ops dm9601_ethtool_ops = { | |
360 | .get_drvinfo = dm9601_get_drvinfo, | |
361 | .get_link = dm9601_get_link, | |
362 | .get_msglevel = usbnet_get_msglevel, | |
363 | .set_msglevel = usbnet_set_msglevel, | |
364 | .get_eeprom_len = dm9601_get_eeprom_len, | |
365 | .get_eeprom = dm9601_get_eeprom, | |
366 | .get_settings = usbnet_get_settings, | |
367 | .set_settings = usbnet_set_settings, | |
368 | .nway_reset = usbnet_nway_reset, | |
369 | }; | |
370 | ||
371 | static void dm9601_set_multicast(struct net_device *net) | |
372 | { | |
373 | struct usbnet *dev = netdev_priv(net); | |
374 | /* We use the 20 byte dev->data for our 8 byte filter buffer | |
375 | * to avoid allocating memory that is tricky to free later */ | |
376 | u8 *hashes = (u8 *) & dev->data; | |
33eddedb | 377 | u8 rx_ctl = 0x31; |
d0374f4f PK |
378 | |
379 | memset(hashes, 0x00, DM_MCAST_SIZE); | |
380 | hashes[DM_MCAST_SIZE - 1] |= 0x80; /* broadcast address */ | |
381 | ||
382 | if (net->flags & IFF_PROMISC) { | |
383 | rx_ctl |= 0x02; | |
384 | } else if (net->flags & IFF_ALLMULTI || net->mc_count > DM_MAX_MCAST) { | |
385 | rx_ctl |= 0x04; | |
386 | } else if (net->mc_count) { | |
387 | struct dev_mc_list *mc_list = net->mc_list; | |
388 | int i; | |
389 | ||
47df976c | 390 | for (i = 0; i < net->mc_count; i++, mc_list = mc_list->next) { |
d0374f4f PK |
391 | u32 crc = ether_crc(ETH_ALEN, mc_list->dmi_addr) >> 26; |
392 | hashes[crc >> 3] |= 1 << (crc & 0x7); | |
393 | } | |
394 | } | |
395 | ||
396 | dm_write_async(dev, DM_MCAST_ADDR, DM_MCAST_SIZE, hashes); | |
397 | dm_write_reg_async(dev, DM_RX_CTRL, rx_ctl); | |
398 | } | |
399 | ||
4b9f8ec6 WF |
400 | static void __dm9601_set_mac_address(struct usbnet *dev) |
401 | { | |
402 | dm_write_async(dev, DM_PHY_ADDR, ETH_ALEN, dev->net->dev_addr); | |
403 | } | |
404 | ||
753dcfee PK |
405 | static int dm9601_set_mac_address(struct net_device *net, void *p) |
406 | { | |
407 | struct sockaddr *addr = p; | |
408 | struct usbnet *dev = netdev_priv(net); | |
409 | ||
f52deb0e WF |
410 | if (!is_valid_ether_addr(addr->sa_data)) { |
411 | dev_err(&net->dev, "not setting invalid mac address %pM\n", | |
412 | addr->sa_data); | |
753dcfee | 413 | return -EINVAL; |
f52deb0e | 414 | } |
753dcfee PK |
415 | |
416 | memcpy(net->dev_addr, addr->sa_data, net->addr_len); | |
4b9f8ec6 | 417 | __dm9601_set_mac_address(dev); |
753dcfee PK |
418 | |
419 | return 0; | |
420 | } | |
421 | ||
fe85ff82 SH |
422 | static const struct net_device_ops dm9601_netdev_ops = { |
423 | .ndo_open = usbnet_open, | |
424 | .ndo_stop = usbnet_stop, | |
425 | .ndo_start_xmit = usbnet_start_xmit, | |
426 | .ndo_tx_timeout = usbnet_tx_timeout, | |
427 | .ndo_change_mtu = usbnet_change_mtu, | |
428 | .ndo_validate_addr = eth_validate_addr, | |
429 | .ndo_do_ioctl = dm9601_ioctl, | |
430 | .ndo_set_multicast_list = dm9601_set_multicast, | |
431 | .ndo_set_mac_address = dm9601_set_mac_address, | |
432 | }; | |
433 | ||
d0374f4f PK |
434 | static int dm9601_bind(struct usbnet *dev, struct usb_interface *intf) |
435 | { | |
436 | int ret; | |
20f10aa0 | 437 | u8 mac[ETH_ALEN]; |
d0374f4f PK |
438 | |
439 | ret = usbnet_get_endpoints(dev, intf); | |
440 | if (ret) | |
441 | goto out; | |
442 | ||
fe85ff82 | 443 | dev->net->netdev_ops = &dm9601_netdev_ops; |
d0374f4f PK |
444 | dev->net->ethtool_ops = &dm9601_ethtool_ops; |
445 | dev->net->hard_header_len += DM_TX_OVERHEAD; | |
446 | dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len; | |
f662fe5a | 447 | dev->rx_urb_size = dev->net->mtu + ETH_HLEN + DM_RX_OVERHEAD; |
d0374f4f PK |
448 | |
449 | dev->mii.dev = dev->net; | |
450 | dev->mii.mdio_read = dm9601_mdio_read; | |
451 | dev->mii.mdio_write = dm9601_mdio_write; | |
452 | dev->mii.phy_id_mask = 0x1f; | |
453 | dev->mii.reg_num_mask = 0x1f; | |
454 | ||
455 | /* reset */ | |
b8f59586 | 456 | dm_write_reg(dev, DM_NET_CTRL, 1); |
d0374f4f PK |
457 | udelay(20); |
458 | ||
459 | /* read MAC */ | |
20f10aa0 | 460 | if (dm_read(dev, DM_PHY_ADDR, ETH_ALEN, mac) < 0) { |
d0374f4f PK |
461 | printk(KERN_ERR "Error reading MAC address\n"); |
462 | ret = -ENODEV; | |
463 | goto out; | |
464 | } | |
465 | ||
20f10aa0 WF |
466 | /* |
467 | * Overwrite the auto-generated address only with good ones. | |
468 | */ | |
469 | if (is_valid_ether_addr(mac)) | |
470 | memcpy(dev->net->dev_addr, mac, ETH_ALEN); | |
f52deb0e WF |
471 | else { |
472 | printk(KERN_WARNING | |
473 | "dm9601: No valid MAC address in EEPROM, using %pM\n", | |
474 | dev->net->dev_addr); | |
4b9f8ec6 | 475 | __dm9601_set_mac_address(dev); |
f52deb0e | 476 | } |
20f10aa0 | 477 | |
d0374f4f PK |
478 | /* power up phy */ |
479 | dm_write_reg(dev, DM_GPR_CTRL, 1); | |
480 | dm_write_reg(dev, DM_GPR_DATA, 0); | |
481 | ||
482 | /* receive broadcast packets */ | |
483 | dm9601_set_multicast(dev->net); | |
484 | ||
485 | dm9601_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET); | |
486 | dm9601_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE, | |
487 | ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP); | |
488 | mii_nway_restart(&dev->mii); | |
489 | ||
490 | out: | |
491 | return ret; | |
492 | } | |
493 | ||
494 | static int dm9601_rx_fixup(struct usbnet *dev, struct sk_buff *skb) | |
495 | { | |
496 | u8 status; | |
497 | int len; | |
498 | ||
499 | /* format: | |
61189c78 PK |
500 | b1: rx status |
501 | b2: packet length (incl crc) low | |
502 | b3: packet length (incl crc) high | |
503 | b4..n-4: packet data | |
d0374f4f PK |
504 | bn-3..bn: ethernet crc |
505 | */ | |
506 | ||
507 | if (unlikely(skb->len < DM_RX_OVERHEAD)) { | |
508 | dev_err(&dev->udev->dev, "unexpected tiny rx frame\n"); | |
509 | return 0; | |
510 | } | |
511 | ||
512 | status = skb->data[0]; | |
513 | len = (skb->data[1] | (skb->data[2] << 8)) - 4; | |
514 | ||
515 | if (unlikely(status & 0xbf)) { | |
9612101c HX |
516 | if (status & 0x01) dev->net->stats.rx_fifo_errors++; |
517 | if (status & 0x02) dev->net->stats.rx_crc_errors++; | |
518 | if (status & 0x04) dev->net->stats.rx_frame_errors++; | |
519 | if (status & 0x20) dev->net->stats.rx_missed_errors++; | |
520 | if (status & 0x90) dev->net->stats.rx_length_errors++; | |
d0374f4f PK |
521 | return 0; |
522 | } | |
523 | ||
524 | skb_pull(skb, 3); | |
525 | skb_trim(skb, len); | |
526 | ||
527 | return 1; | |
528 | } | |
529 | ||
530 | static struct sk_buff *dm9601_tx_fixup(struct usbnet *dev, struct sk_buff *skb, | |
531 | gfp_t flags) | |
532 | { | |
533 | int len; | |
534 | ||
535 | /* format: | |
61189c78 PK |
536 | b1: packet length low |
537 | b2: packet length high | |
d0374f4f PK |
538 | b3..n: packet data |
539 | */ | |
540 | ||
23de559b PK |
541 | len = skb->len; |
542 | ||
d0374f4f PK |
543 | if (skb_headroom(skb) < DM_TX_OVERHEAD) { |
544 | struct sk_buff *skb2; | |
545 | ||
546 | skb2 = skb_copy_expand(skb, DM_TX_OVERHEAD, 0, flags); | |
547 | dev_kfree_skb_any(skb); | |
548 | skb = skb2; | |
549 | if (!skb) | |
550 | return NULL; | |
551 | } | |
552 | ||
553 | __skb_push(skb, DM_TX_OVERHEAD); | |
554 | ||
d0374f4f PK |
555 | /* usbnet adds padding if length is a multiple of packet size |
556 | if so, adjust length value in header */ | |
23de559b | 557 | if ((skb->len % dev->maxpacket) == 0) |
d0374f4f PK |
558 | len++; |
559 | ||
560 | skb->data[0] = len; | |
561 | skb->data[1] = len >> 8; | |
562 | ||
563 | return skb; | |
564 | } | |
565 | ||
566 | static void dm9601_status(struct usbnet *dev, struct urb *urb) | |
567 | { | |
568 | int link; | |
569 | u8 *buf; | |
570 | ||
571 | /* format: | |
572 | b0: net status | |
573 | b1: tx status 1 | |
574 | b2: tx status 2 | |
575 | b3: rx status | |
576 | b4: rx overflow | |
577 | b5: rx count | |
578 | b6: tx count | |
579 | b7: gpr | |
580 | */ | |
581 | ||
582 | if (urb->actual_length < 8) | |
583 | return; | |
584 | ||
585 | buf = urb->transfer_buffer; | |
586 | ||
587 | link = !!(buf[0] & 0x40); | |
588 | if (netif_carrier_ok(dev->net) != link) { | |
589 | if (link) { | |
590 | netif_carrier_on(dev->net); | |
591 | usbnet_defer_kevent (dev, EVENT_LINK_RESET); | |
592 | } | |
593 | else | |
594 | netif_carrier_off(dev->net); | |
595 | devdbg(dev, "Link Status is: %d", link); | |
596 | } | |
597 | } | |
598 | ||
599 | static int dm9601_link_reset(struct usbnet *dev) | |
600 | { | |
601 | struct ethtool_cmd ecmd; | |
602 | ||
603 | mii_check_media(&dev->mii, 1, 1); | |
604 | mii_ethtool_gset(&dev->mii, &ecmd); | |
605 | ||
606 | devdbg(dev, "link_reset() speed: %d duplex: %d", | |
607 | ecmd.speed, ecmd.duplex); | |
608 | ||
609 | return 0; | |
610 | } | |
611 | ||
612 | static const struct driver_info dm9601_info = { | |
613 | .description = "Davicom DM9601 USB Ethernet", | |
614 | .flags = FLAG_ETHER, | |
615 | .bind = dm9601_bind, | |
616 | .rx_fixup = dm9601_rx_fixup, | |
617 | .tx_fixup = dm9601_tx_fixup, | |
618 | .status = dm9601_status, | |
619 | .link_reset = dm9601_link_reset, | |
620 | .reset = dm9601_link_reset, | |
621 | }; | |
622 | ||
623 | static const struct usb_device_id products[] = { | |
6438ac26 YH |
624 | { |
625 | USB_DEVICE(0x07aa, 0x9601), /* Corega FEther USB-TXC */ | |
626 | .driver_info = (unsigned long)&dm9601_info, | |
627 | }, | |
d0374f4f PK |
628 | { |
629 | USB_DEVICE(0x0a46, 0x9601), /* Davicom USB-100 */ | |
630 | .driver_info = (unsigned long)&dm9601_info, | |
631 | }, | |
6dc477f3 JD |
632 | { |
633 | USB_DEVICE(0x0a46, 0x6688), /* ZT6688 USB NIC */ | |
634 | .driver_info = (unsigned long)&dm9601_info, | |
635 | }, | |
636 | { | |
637 | USB_DEVICE(0x0a46, 0x0268), /* ShanTou ST268 USB NIC */ | |
638 | .driver_info = (unsigned long)&dm9601_info, | |
639 | }, | |
a06da754 PK |
640 | { |
641 | USB_DEVICE(0x0a46, 0x8515), /* ADMtek ADM8515 USB NIC */ | |
642 | .driver_info = (unsigned long)&dm9601_info, | |
643 | }, | |
b47b4b22 PK |
644 | { |
645 | USB_DEVICE(0x0a47, 0x9601), /* Hirose USB-100 */ | |
a1a69c8d PK |
646 | .driver_info = (unsigned long)&dm9601_info, |
647 | }, | |
648 | { | |
649 | USB_DEVICE(0x0fe6, 0x8101), /* DM9601 USB to Fast Ethernet Adapter */ | |
b47b4b22 PK |
650 | .driver_info = (unsigned long)&dm9601_info, |
651 | }, | |
d0374f4f PK |
652 | {}, // END |
653 | }; | |
654 | ||
655 | MODULE_DEVICE_TABLE(usb, products); | |
656 | ||
657 | static struct usb_driver dm9601_driver = { | |
658 | .name = "dm9601", | |
659 | .id_table = products, | |
660 | .probe = usbnet_probe, | |
661 | .disconnect = usbnet_disconnect, | |
662 | .suspend = usbnet_suspend, | |
663 | .resume = usbnet_resume, | |
664 | }; | |
665 | ||
666 | static int __init dm9601_init(void) | |
667 | { | |
668 | return usb_register(&dm9601_driver); | |
669 | } | |
670 | ||
671 | static void __exit dm9601_exit(void) | |
672 | { | |
673 | usb_deregister(&dm9601_driver); | |
674 | } | |
675 | ||
676 | module_init(dm9601_init); | |
677 | module_exit(dm9601_exit); | |
678 | ||
679 | MODULE_AUTHOR("Peter Korsgaard <jacmet@sunsite.dk>"); | |
680 | MODULE_DESCRIPTION("Davicom DM9601 USB 1.1 ethernet devices"); | |
681 | MODULE_LICENSE("GPL"); |