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Commit | Line | Data |
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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> |
5a0e3ad6 | 24 | #include <linux/slab.h> |
d0374f4f PK |
25 | |
26 | /* datasheet: | |
98658bc9 | 27 | http://ptm2.cc.utu.fi/ftp/network/cards/DM9601/From_NET/DM9601-DS-P01-930914.pdf |
d0374f4f PK |
28 | */ |
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 | ||
57 | static int dm_read(struct usbnet *dev, u8 reg, u16 length, void *data) | |
58 | { | |
16d78bc2 PK |
59 | void *buf; |
60 | int err = -ENOMEM; | |
61 | ||
60b86755 | 62 | netdev_dbg(dev->net, "dm_read() reg=0x%02x length=%d\n", reg, length); |
16d78bc2 PK |
63 | |
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; | |
d0374f4f PK |
81 | } |
82 | ||
83 | static int dm_read_reg(struct usbnet *dev, u8 reg, u8 *value) | |
84 | { | |
85 | return dm_read(dev, reg, 1, value); | |
86 | } | |
87 | ||
88 | static int dm_write(struct usbnet *dev, u8 reg, u16 length, void *data) | |
89 | { | |
16d78bc2 PK |
90 | void *buf = NULL; |
91 | int err = -ENOMEM; | |
92 | ||
60b86755 | 93 | netdev_dbg(dev->net, "dm_write() reg=0x%02x, length=%d\n", reg, length); |
16d78bc2 PK |
94 | |
95 | if (data) { | |
5476b8b2 | 96 | buf = kmemdup(data, length, GFP_KERNEL); |
16d78bc2 PK |
97 | if (!buf) |
98 | goto out; | |
16d78bc2 PK |
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 | { | |
60b86755 JP |
115 | netdev_dbg(dev->net, "dm_write_reg() reg=0x%02x, value=0x%02x\n", |
116 | reg, value); | |
d0374f4f PK |
117 | return usb_control_msg(dev->udev, |
118 | usb_sndctrlpipe(dev->udev, 0), | |
119 | DM_WRITE_REG, | |
120 | USB_DIR_OUT | USB_TYPE_VENDOR |USB_RECIP_DEVICE, | |
686149f4 | 121 | value, reg, NULL, 0, USB_CTRL_SET_TIMEOUT); |
d0374f4f PK |
122 | } |
123 | ||
124 | static void dm_write_async_callback(struct urb *urb) | |
125 | { | |
126 | struct usb_ctrlrequest *req = (struct usb_ctrlrequest *)urb->context; | |
c94cb314 | 127 | int status = urb->status; |
d0374f4f | 128 | |
c94cb314 | 129 | if (status < 0) |
77b69015 | 130 | printk(KERN_DEBUG "dm_write_async_callback() failed with %d\n", |
c94cb314 | 131 | status); |
d0374f4f PK |
132 | |
133 | kfree(req); | |
134 | usb_free_urb(urb); | |
135 | } | |
136 | ||
ba734f34 PK |
137 | static void dm_write_async_helper(struct usbnet *dev, u8 reg, u8 value, |
138 | u16 length, void *data) | |
d0374f4f PK |
139 | { |
140 | struct usb_ctrlrequest *req; | |
141 | struct urb *urb; | |
142 | int status; | |
143 | ||
d0374f4f PK |
144 | urb = usb_alloc_urb(0, GFP_ATOMIC); |
145 | if (!urb) { | |
60b86755 | 146 | netdev_err(dev->net, "Error allocating URB in dm_write_async_helper!\n"); |
d0374f4f PK |
147 | return; |
148 | } | |
149 | ||
150 | req = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC); | |
151 | if (!req) { | |
60b86755 | 152 | netdev_err(dev->net, "Failed to allocate memory for control request\n"); |
d0374f4f PK |
153 | usb_free_urb(urb); |
154 | return; | |
155 | } | |
156 | ||
157 | req->bRequestType = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE; | |
ba734f34 PK |
158 | req->bRequest = length ? DM_WRITE_REGS : DM_WRITE_REG; |
159 | req->wValue = cpu_to_le16(value); | |
d0374f4f PK |
160 | req->wIndex = cpu_to_le16(reg); |
161 | req->wLength = cpu_to_le16(length); | |
162 | ||
163 | usb_fill_control_urb(urb, dev->udev, | |
164 | usb_sndctrlpipe(dev->udev, 0), | |
165 | (void *)req, data, length, | |
166 | dm_write_async_callback, req); | |
167 | ||
168 | status = usb_submit_urb(urb, GFP_ATOMIC); | |
169 | if (status < 0) { | |
60b86755 JP |
170 | netdev_err(dev->net, "Error submitting the control message: status=%d\n", |
171 | status); | |
d0374f4f PK |
172 | kfree(req); |
173 | usb_free_urb(urb); | |
174 | } | |
175 | } | |
176 | ||
ba734f34 | 177 | static void dm_write_async(struct usbnet *dev, u8 reg, u16 length, void *data) |
d0374f4f | 178 | { |
60b86755 | 179 | netdev_dbg(dev->net, "dm_write_async() reg=0x%02x length=%d\n", reg, length); |
d0374f4f | 180 | |
ba734f34 PK |
181 | dm_write_async_helper(dev, reg, 0, length, data); |
182 | } | |
183 | ||
184 | static void dm_write_reg_async(struct usbnet *dev, u8 reg, u8 value) | |
185 | { | |
60b86755 JP |
186 | netdev_dbg(dev->net, "dm_write_reg_async() reg=0x%02x value=0x%02x\n", |
187 | reg, value); | |
d0374f4f | 188 | |
ba734f34 | 189 | dm_write_async_helper(dev, reg, value, 0, NULL); |
d0374f4f PK |
190 | } |
191 | ||
eca1ad82 | 192 | static int dm_read_shared_word(struct usbnet *dev, int phy, u8 reg, __le16 *value) |
d0374f4f PK |
193 | { |
194 | int ret, i; | |
195 | ||
196 | mutex_lock(&dev->phy_mutex); | |
197 | ||
198 | dm_write_reg(dev, DM_SHARED_ADDR, phy ? (reg | 0x40) : reg); | |
199 | dm_write_reg(dev, DM_SHARED_CTRL, phy ? 0xc : 0x4); | |
200 | ||
201 | for (i = 0; i < DM_TIMEOUT; i++) { | |
202 | u8 tmp; | |
203 | ||
204 | udelay(1); | |
205 | ret = dm_read_reg(dev, DM_SHARED_CTRL, &tmp); | |
206 | if (ret < 0) | |
207 | goto out; | |
208 | ||
209 | /* ready */ | |
210 | if ((tmp & 1) == 0) | |
211 | break; | |
212 | } | |
213 | ||
214 | if (i == DM_TIMEOUT) { | |
60b86755 | 215 | netdev_err(dev->net, "%s read timed out!\n", phy ? "phy" : "eeprom"); |
d0374f4f PK |
216 | ret = -EIO; |
217 | goto out; | |
218 | } | |
219 | ||
220 | dm_write_reg(dev, DM_SHARED_CTRL, 0x0); | |
221 | ret = dm_read(dev, DM_SHARED_DATA, 2, value); | |
222 | ||
60b86755 JP |
223 | netdev_dbg(dev->net, "read shared %d 0x%02x returned 0x%04x, %d\n", |
224 | phy, reg, *value, ret); | |
d0374f4f PK |
225 | |
226 | out: | |
227 | mutex_unlock(&dev->phy_mutex); | |
228 | return ret; | |
229 | } | |
230 | ||
eca1ad82 | 231 | static int dm_write_shared_word(struct usbnet *dev, int phy, u8 reg, __le16 value) |
d0374f4f PK |
232 | { |
233 | int ret, i; | |
234 | ||
235 | mutex_lock(&dev->phy_mutex); | |
236 | ||
237 | ret = dm_write(dev, DM_SHARED_DATA, 2, &value); | |
238 | if (ret < 0) | |
239 | goto out; | |
240 | ||
241 | dm_write_reg(dev, DM_SHARED_ADDR, phy ? (reg | 0x40) : reg); | |
e9162ab1 | 242 | dm_write_reg(dev, DM_SHARED_CTRL, phy ? 0x1a : 0x12); |
d0374f4f PK |
243 | |
244 | for (i = 0; i < DM_TIMEOUT; i++) { | |
245 | u8 tmp; | |
246 | ||
247 | udelay(1); | |
248 | ret = dm_read_reg(dev, DM_SHARED_CTRL, &tmp); | |
249 | if (ret < 0) | |
250 | goto out; | |
251 | ||
252 | /* ready */ | |
253 | if ((tmp & 1) == 0) | |
254 | break; | |
255 | } | |
256 | ||
257 | if (i == DM_TIMEOUT) { | |
60b86755 | 258 | netdev_err(dev->net, "%s write timed out!\n", phy ? "phy" : "eeprom"); |
d0374f4f PK |
259 | ret = -EIO; |
260 | goto out; | |
261 | } | |
262 | ||
263 | dm_write_reg(dev, DM_SHARED_CTRL, 0x0); | |
264 | ||
265 | out: | |
266 | mutex_unlock(&dev->phy_mutex); | |
267 | return ret; | |
268 | } | |
269 | ||
270 | static int dm_read_eeprom_word(struct usbnet *dev, u8 offset, void *value) | |
271 | { | |
272 | return dm_read_shared_word(dev, 0, offset, value); | |
273 | } | |
274 | ||
275 | ||
276 | ||
277 | static int dm9601_get_eeprom_len(struct net_device *dev) | |
278 | { | |
279 | return DM_EEPROM_LEN; | |
280 | } | |
281 | ||
282 | static int dm9601_get_eeprom(struct net_device *net, | |
283 | struct ethtool_eeprom *eeprom, u8 * data) | |
284 | { | |
285 | struct usbnet *dev = netdev_priv(net); | |
eca1ad82 | 286 | __le16 *ebuf = (__le16 *) data; |
d0374f4f PK |
287 | int i; |
288 | ||
289 | /* access is 16bit */ | |
290 | if ((eeprom->offset % 2) || (eeprom->len % 2)) | |
291 | return -EINVAL; | |
292 | ||
293 | for (i = 0; i < eeprom->len / 2; i++) { | |
294 | if (dm_read_eeprom_word(dev, eeprom->offset / 2 + i, | |
295 | &ebuf[i]) < 0) | |
296 | return -EINVAL; | |
297 | } | |
298 | return 0; | |
299 | } | |
300 | ||
301 | static int dm9601_mdio_read(struct net_device *netdev, int phy_id, int loc) | |
302 | { | |
303 | struct usbnet *dev = netdev_priv(netdev); | |
304 | ||
eca1ad82 | 305 | __le16 res; |
d0374f4f PK |
306 | |
307 | if (phy_id) { | |
60b86755 | 308 | netdev_dbg(dev->net, "Only internal phy supported\n"); |
d0374f4f PK |
309 | return 0; |
310 | } | |
311 | ||
312 | dm_read_shared_word(dev, 1, loc, &res); | |
313 | ||
60b86755 JP |
314 | netdev_dbg(dev->net, |
315 | "dm9601_mdio_read() phy_id=0x%02x, loc=0x%02x, returns=0x%04x\n", | |
316 | phy_id, loc, le16_to_cpu(res)); | |
d0374f4f PK |
317 | |
318 | return le16_to_cpu(res); | |
319 | } | |
320 | ||
321 | static void dm9601_mdio_write(struct net_device *netdev, int phy_id, int loc, | |
322 | int val) | |
323 | { | |
324 | struct usbnet *dev = netdev_priv(netdev); | |
eca1ad82 | 325 | __le16 res = cpu_to_le16(val); |
d0374f4f PK |
326 | |
327 | if (phy_id) { | |
60b86755 | 328 | netdev_dbg(dev->net, "Only internal phy supported\n"); |
d0374f4f PK |
329 | return; |
330 | } | |
331 | ||
60b86755 JP |
332 | netdev_dbg(dev->net, "dm9601_mdio_write() phy_id=0x%02x, loc=0x%02x, val=0x%04x\n", |
333 | phy_id, loc, val); | |
d0374f4f PK |
334 | |
335 | dm_write_shared_word(dev, 1, loc, res); | |
336 | } | |
337 | ||
338 | static void dm9601_get_drvinfo(struct net_device *net, | |
339 | struct ethtool_drvinfo *info) | |
340 | { | |
341 | /* Inherit standard device info */ | |
342 | usbnet_get_drvinfo(net, info); | |
343 | info->eedump_len = DM_EEPROM_LEN; | |
344 | } | |
345 | ||
346 | static u32 dm9601_get_link(struct net_device *net) | |
347 | { | |
348 | struct usbnet *dev = netdev_priv(net); | |
349 | ||
350 | return mii_link_ok(&dev->mii); | |
351 | } | |
352 | ||
353 | static int dm9601_ioctl(struct net_device *net, struct ifreq *rq, int cmd) | |
354 | { | |
355 | struct usbnet *dev = netdev_priv(net); | |
356 | ||
357 | return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL); | |
358 | } | |
359 | ||
0fc0b732 | 360 | static const struct ethtool_ops dm9601_ethtool_ops = { |
d0374f4f PK |
361 | .get_drvinfo = dm9601_get_drvinfo, |
362 | .get_link = dm9601_get_link, | |
363 | .get_msglevel = usbnet_get_msglevel, | |
364 | .set_msglevel = usbnet_set_msglevel, | |
365 | .get_eeprom_len = dm9601_get_eeprom_len, | |
366 | .get_eeprom = dm9601_get_eeprom, | |
367 | .get_settings = usbnet_get_settings, | |
368 | .set_settings = usbnet_set_settings, | |
369 | .nway_reset = usbnet_nway_reset, | |
370 | }; | |
371 | ||
372 | static void dm9601_set_multicast(struct net_device *net) | |
373 | { | |
374 | struct usbnet *dev = netdev_priv(net); | |
375 | /* We use the 20 byte dev->data for our 8 byte filter buffer | |
376 | * to avoid allocating memory that is tricky to free later */ | |
377 | u8 *hashes = (u8 *) & dev->data; | |
33eddedb | 378 | u8 rx_ctl = 0x31; |
d0374f4f PK |
379 | |
380 | memset(hashes, 0x00, DM_MCAST_SIZE); | |
381 | hashes[DM_MCAST_SIZE - 1] |= 0x80; /* broadcast address */ | |
382 | ||
383 | if (net->flags & IFF_PROMISC) { | |
384 | rx_ctl |= 0x02; | |
2cc04d27 JP |
385 | } else if (net->flags & IFF_ALLMULTI || |
386 | netdev_mc_count(net) > DM_MAX_MCAST) { | |
d0374f4f | 387 | rx_ctl |= 0x04; |
2cc04d27 | 388 | } else if (!netdev_mc_empty(net)) { |
22bedad3 | 389 | struct netdev_hw_addr *ha; |
d0374f4f | 390 | |
22bedad3 JP |
391 | netdev_for_each_mc_addr(ha, net) { |
392 | u32 crc = ether_crc(ETH_ALEN, ha->addr) >> 26; | |
d0374f4f PK |
393 | hashes[crc >> 3] |= 1 << (crc & 0x7); |
394 | } | |
395 | } | |
396 | ||
397 | dm_write_async(dev, DM_MCAST_ADDR, DM_MCAST_SIZE, hashes); | |
398 | dm_write_reg_async(dev, DM_RX_CTRL, rx_ctl); | |
399 | } | |
400 | ||
4b9f8ec6 WF |
401 | static void __dm9601_set_mac_address(struct usbnet *dev) |
402 | { | |
403 | dm_write_async(dev, DM_PHY_ADDR, ETH_ALEN, dev->net->dev_addr); | |
404 | } | |
405 | ||
753dcfee PK |
406 | static int dm9601_set_mac_address(struct net_device *net, void *p) |
407 | { | |
408 | struct sockaddr *addr = p; | |
409 | struct usbnet *dev = netdev_priv(net); | |
410 | ||
f52deb0e WF |
411 | if (!is_valid_ether_addr(addr->sa_data)) { |
412 | dev_err(&net->dev, "not setting invalid mac address %pM\n", | |
413 | addr->sa_data); | |
753dcfee | 414 | return -EINVAL; |
f52deb0e | 415 | } |
753dcfee PK |
416 | |
417 | memcpy(net->dev_addr, addr->sa_data, net->addr_len); | |
4b9f8ec6 | 418 | __dm9601_set_mac_address(dev); |
753dcfee PK |
419 | |
420 | return 0; | |
421 | } | |
422 | ||
fe85ff82 SH |
423 | static const struct net_device_ops dm9601_netdev_ops = { |
424 | .ndo_open = usbnet_open, | |
425 | .ndo_stop = usbnet_stop, | |
426 | .ndo_start_xmit = usbnet_start_xmit, | |
427 | .ndo_tx_timeout = usbnet_tx_timeout, | |
428 | .ndo_change_mtu = usbnet_change_mtu, | |
429 | .ndo_validate_addr = eth_validate_addr, | |
430 | .ndo_do_ioctl = dm9601_ioctl, | |
431 | .ndo_set_multicast_list = dm9601_set_multicast, | |
432 | .ndo_set_mac_address = dm9601_set_mac_address, | |
433 | }; | |
434 | ||
d0374f4f PK |
435 | static int dm9601_bind(struct usbnet *dev, struct usb_interface *intf) |
436 | { | |
437 | int ret; | |
20f10aa0 | 438 | u8 mac[ETH_ALEN]; |
d0374f4f PK |
439 | |
440 | ret = usbnet_get_endpoints(dev, intf); | |
441 | if (ret) | |
442 | goto out; | |
443 | ||
fe85ff82 | 444 | dev->net->netdev_ops = &dm9601_netdev_ops; |
d0374f4f PK |
445 | dev->net->ethtool_ops = &dm9601_ethtool_ops; |
446 | dev->net->hard_header_len += DM_TX_OVERHEAD; | |
447 | dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len; | |
f662fe5a | 448 | dev->rx_urb_size = dev->net->mtu + ETH_HLEN + DM_RX_OVERHEAD; |
d0374f4f PK |
449 | |
450 | dev->mii.dev = dev->net; | |
451 | dev->mii.mdio_read = dm9601_mdio_read; | |
452 | dev->mii.mdio_write = dm9601_mdio_write; | |
453 | dev->mii.phy_id_mask = 0x1f; | |
454 | dev->mii.reg_num_mask = 0x1f; | |
455 | ||
456 | /* reset */ | |
b8f59586 | 457 | dm_write_reg(dev, DM_NET_CTRL, 1); |
d0374f4f PK |
458 | udelay(20); |
459 | ||
460 | /* read MAC */ | |
20f10aa0 | 461 | if (dm_read(dev, DM_PHY_ADDR, ETH_ALEN, mac) < 0) { |
d0374f4f PK |
462 | printk(KERN_ERR "Error reading MAC address\n"); |
463 | ret = -ENODEV; | |
464 | goto out; | |
465 | } | |
466 | ||
20f10aa0 WF |
467 | /* |
468 | * Overwrite the auto-generated address only with good ones. | |
469 | */ | |
470 | if (is_valid_ether_addr(mac)) | |
471 | memcpy(dev->net->dev_addr, mac, ETH_ALEN); | |
f52deb0e WF |
472 | else { |
473 | printk(KERN_WARNING | |
474 | "dm9601: No valid MAC address in EEPROM, using %pM\n", | |
475 | dev->net->dev_addr); | |
4b9f8ec6 | 476 | __dm9601_set_mac_address(dev); |
f52deb0e | 477 | } |
20f10aa0 | 478 | |
d0374f4f PK |
479 | /* power up phy */ |
480 | dm_write_reg(dev, DM_GPR_CTRL, 1); | |
481 | dm_write_reg(dev, DM_GPR_DATA, 0); | |
482 | ||
483 | /* receive broadcast packets */ | |
484 | dm9601_set_multicast(dev->net); | |
485 | ||
486 | dm9601_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET); | |
487 | dm9601_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE, | |
488 | ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP); | |
489 | mii_nway_restart(&dev->mii); | |
490 | ||
491 | out: | |
492 | return ret; | |
493 | } | |
494 | ||
495 | static int dm9601_rx_fixup(struct usbnet *dev, struct sk_buff *skb) | |
496 | { | |
497 | u8 status; | |
498 | int len; | |
499 | ||
500 | /* format: | |
61189c78 PK |
501 | b1: rx status |
502 | b2: packet length (incl crc) low | |
503 | b3: packet length (incl crc) high | |
504 | b4..n-4: packet data | |
d0374f4f PK |
505 | bn-3..bn: ethernet crc |
506 | */ | |
507 | ||
508 | if (unlikely(skb->len < DM_RX_OVERHEAD)) { | |
509 | dev_err(&dev->udev->dev, "unexpected tiny rx frame\n"); | |
510 | return 0; | |
511 | } | |
512 | ||
513 | status = skb->data[0]; | |
514 | len = (skb->data[1] | (skb->data[2] << 8)) - 4; | |
515 | ||
516 | if (unlikely(status & 0xbf)) { | |
9612101c HX |
517 | if (status & 0x01) dev->net->stats.rx_fifo_errors++; |
518 | if (status & 0x02) dev->net->stats.rx_crc_errors++; | |
519 | if (status & 0x04) dev->net->stats.rx_frame_errors++; | |
520 | if (status & 0x20) dev->net->stats.rx_missed_errors++; | |
521 | if (status & 0x90) dev->net->stats.rx_length_errors++; | |
d0374f4f PK |
522 | return 0; |
523 | } | |
524 | ||
525 | skb_pull(skb, 3); | |
526 | skb_trim(skb, len); | |
527 | ||
528 | return 1; | |
529 | } | |
530 | ||
531 | static struct sk_buff *dm9601_tx_fixup(struct usbnet *dev, struct sk_buff *skb, | |
532 | gfp_t flags) | |
533 | { | |
534 | int len; | |
535 | ||
536 | /* format: | |
61189c78 PK |
537 | b1: packet length low |
538 | b2: packet length high | |
d0374f4f PK |
539 | b3..n: packet data |
540 | */ | |
541 | ||
23de559b PK |
542 | len = skb->len; |
543 | ||
d0374f4f PK |
544 | if (skb_headroom(skb) < DM_TX_OVERHEAD) { |
545 | struct sk_buff *skb2; | |
546 | ||
547 | skb2 = skb_copy_expand(skb, DM_TX_OVERHEAD, 0, flags); | |
548 | dev_kfree_skb_any(skb); | |
549 | skb = skb2; | |
550 | if (!skb) | |
551 | return NULL; | |
552 | } | |
553 | ||
554 | __skb_push(skb, DM_TX_OVERHEAD); | |
555 | ||
d0374f4f PK |
556 | /* usbnet adds padding if length is a multiple of packet size |
557 | if so, adjust length value in header */ | |
23de559b | 558 | if ((skb->len % dev->maxpacket) == 0) |
d0374f4f PK |
559 | len++; |
560 | ||
561 | skb->data[0] = len; | |
562 | skb->data[1] = len >> 8; | |
563 | ||
564 | return skb; | |
565 | } | |
566 | ||
567 | static void dm9601_status(struct usbnet *dev, struct urb *urb) | |
568 | { | |
569 | int link; | |
570 | u8 *buf; | |
571 | ||
572 | /* format: | |
573 | b0: net status | |
574 | b1: tx status 1 | |
575 | b2: tx status 2 | |
576 | b3: rx status | |
577 | b4: rx overflow | |
578 | b5: rx count | |
579 | b6: tx count | |
580 | b7: gpr | |
581 | */ | |
582 | ||
583 | if (urb->actual_length < 8) | |
584 | return; | |
585 | ||
586 | buf = urb->transfer_buffer; | |
587 | ||
588 | link = !!(buf[0] & 0x40); | |
589 | if (netif_carrier_ok(dev->net) != link) { | |
590 | if (link) { | |
591 | netif_carrier_on(dev->net); | |
592 | usbnet_defer_kevent (dev, EVENT_LINK_RESET); | |
593 | } | |
594 | else | |
595 | netif_carrier_off(dev->net); | |
60b86755 | 596 | netdev_dbg(dev->net, "Link Status is: %d\n", link); |
d0374f4f PK |
597 | } |
598 | } | |
599 | ||
600 | static int dm9601_link_reset(struct usbnet *dev) | |
601 | { | |
8ae6daca | 602 | struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET }; |
d0374f4f PK |
603 | |
604 | mii_check_media(&dev->mii, 1, 1); | |
605 | mii_ethtool_gset(&dev->mii, &ecmd); | |
606 | ||
8ae6daca DD |
607 | netdev_dbg(dev->net, "link_reset() speed: %u duplex: %d\n", |
608 | ethtool_cmd_speed(&ecmd), ecmd.duplex); | |
d0374f4f PK |
609 | |
610 | return 0; | |
611 | } | |
612 | ||
613 | static const struct driver_info dm9601_info = { | |
614 | .description = "Davicom DM9601 USB Ethernet", | |
37e8273c | 615 | .flags = FLAG_ETHER | FLAG_LINK_INTR, |
d0374f4f PK |
616 | .bind = dm9601_bind, |
617 | .rx_fixup = dm9601_rx_fixup, | |
618 | .tx_fixup = dm9601_tx_fixup, | |
619 | .status = dm9601_status, | |
620 | .link_reset = dm9601_link_reset, | |
621 | .reset = dm9601_link_reset, | |
622 | }; | |
623 | ||
624 | static const struct usb_device_id products[] = { | |
6438ac26 YH |
625 | { |
626 | USB_DEVICE(0x07aa, 0x9601), /* Corega FEther USB-TXC */ | |
627 | .driver_info = (unsigned long)&dm9601_info, | |
628 | }, | |
d0374f4f PK |
629 | { |
630 | USB_DEVICE(0x0a46, 0x9601), /* Davicom USB-100 */ | |
631 | .driver_info = (unsigned long)&dm9601_info, | |
632 | }, | |
6dc477f3 JD |
633 | { |
634 | USB_DEVICE(0x0a46, 0x6688), /* ZT6688 USB NIC */ | |
635 | .driver_info = (unsigned long)&dm9601_info, | |
636 | }, | |
637 | { | |
638 | USB_DEVICE(0x0a46, 0x0268), /* ShanTou ST268 USB NIC */ | |
639 | .driver_info = (unsigned long)&dm9601_info, | |
640 | }, | |
a06da754 PK |
641 | { |
642 | USB_DEVICE(0x0a46, 0x8515), /* ADMtek ADM8515 USB NIC */ | |
643 | .driver_info = (unsigned long)&dm9601_info, | |
644 | }, | |
b47b4b22 PK |
645 | { |
646 | USB_DEVICE(0x0a47, 0x9601), /* Hirose USB-100 */ | |
a1a69c8d PK |
647 | .driver_info = (unsigned long)&dm9601_info, |
648 | }, | |
649 | { | |
650 | USB_DEVICE(0x0fe6, 0x8101), /* DM9601 USB to Fast Ethernet Adapter */ | |
b47b4b22 PK |
651 | .driver_info = (unsigned long)&dm9601_info, |
652 | }, | |
67158ceb SH |
653 | { |
654 | USB_DEVICE(0x0fe6, 0x9700), /* DM9601 USB to Fast Ethernet Adapter */ | |
655 | .driver_info = (unsigned long)&dm9601_info, | |
656 | }, | |
06b71b65 JK |
657 | { |
658 | USB_DEVICE(0x0a46, 0x9000), /* DM9000E */ | |
659 | .driver_info = (unsigned long)&dm9601_info, | |
660 | }, | |
d0374f4f PK |
661 | {}, // END |
662 | }; | |
663 | ||
664 | MODULE_DEVICE_TABLE(usb, products); | |
665 | ||
666 | static struct usb_driver dm9601_driver = { | |
667 | .name = "dm9601", | |
668 | .id_table = products, | |
669 | .probe = usbnet_probe, | |
670 | .disconnect = usbnet_disconnect, | |
671 | .suspend = usbnet_suspend, | |
672 | .resume = usbnet_resume, | |
673 | }; | |
674 | ||
675 | static int __init dm9601_init(void) | |
676 | { | |
677 | return usb_register(&dm9601_driver); | |
678 | } | |
679 | ||
680 | static void __exit dm9601_exit(void) | |
681 | { | |
682 | usb_deregister(&dm9601_driver); | |
683 | } | |
684 | ||
685 | module_init(dm9601_init); | |
686 | module_exit(dm9601_exit); | |
687 | ||
688 | MODULE_AUTHOR("Peter Korsgaard <jacmet@sunsite.dk>"); | |
689 | MODULE_DESCRIPTION("Davicom DM9601 USB 1.1 ethernet devices"); | |
690 | MODULE_LICENSE("GPL"); |