Version:  2.0.40 2.2.26 2.4.37 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16

Linux/drivers/net/usb/mcs7830.c

  1 /*
  2  * MOSCHIP MCS7830 based (7730/7830/7832) USB 2.0 Ethernet Devices
  3  *
  4  * based on usbnet.c, asix.c and the vendor provided mcs7830 driver
  5  *
  6  * Copyright (C) 2010 Andreas Mohr <andi@lisas.de>
  7  * Copyright (C) 2006 Arnd Bergmann <arnd@arndb.de>
  8  * Copyright (C) 2003-2005 David Hollis <dhollis@davehollis.com>
  9  * Copyright (C) 2005 Phil Chang <pchang23@sbcglobal.net>
 10  * Copyright (c) 2002-2003 TiVo Inc.
 11  *
 12  * Definitions gathered from MOSCHIP, Data Sheet_7830DA.pdf (thanks!).
 13  *
 14  * 2010-12-19: add 7832 USB PID ("functionality same as MCS7830"),
 15  *             per active notification by manufacturer
 16  *
 17  * TODO:
 18  * - support HIF_REG_CONFIG_SLEEPMODE/HIF_REG_CONFIG_TXENABLE (via autopm?)
 19  * - implement ethtool_ops get_pauseparam/set_pauseparam
 20  *   via HIF_REG_PAUSE_THRESHOLD (>= revision C only!)
 21  * - implement get_eeprom/[set_eeprom]
 22  * - switch PHY on/off on ifup/ifdown (perhaps in usbnet.c, via MII)
 23  * - mcs7830_get_regs() handling is weird: for rev 2 we return 32 regs,
 24  *   can access only ~ 24, remaining user buffer is uninitialized garbage
 25  * - anything else?
 26  *
 27  *
 28  * This program is free software; you can redistribute it and/or modify
 29  * it under the terms of the GNU General Public License as published by
 30  * the Free Software Foundation; either version 2 of the License, or
 31  * (at your option) any later version.
 32  *
 33  * This program is distributed in the hope that it will be useful,
 34  * but WITHOUT ANY WARRANTY; without even the implied warranty of
 35  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 36  * GNU General Public License for more details.
 37  *
 38  * You should have received a copy of the GNU General Public License
 39  * along with this program; if not, see <http://www.gnu.org/licenses/>.
 40  */
 41 
 42 #include <linux/crc32.h>
 43 #include <linux/etherdevice.h>
 44 #include <linux/ethtool.h>
 45 #include <linux/mii.h>
 46 #include <linux/module.h>
 47 #include <linux/netdevice.h>
 48 #include <linux/slab.h>
 49 #include <linux/usb.h>
 50 #include <linux/usb/usbnet.h>
 51 
 52 /* requests */
 53 #define MCS7830_RD_BMREQ        (USB_DIR_IN  | USB_TYPE_VENDOR | \
 54                                  USB_RECIP_DEVICE)
 55 #define MCS7830_WR_BMREQ        (USB_DIR_OUT | USB_TYPE_VENDOR | \
 56                                  USB_RECIP_DEVICE)
 57 #define MCS7830_RD_BREQ         0x0E
 58 #define MCS7830_WR_BREQ         0x0D
 59 
 60 #define MCS7830_CTRL_TIMEOUT    1000
 61 #define MCS7830_MAX_MCAST       64
 62 
 63 #define MCS7830_VENDOR_ID       0x9710
 64 #define MCS7832_PRODUCT_ID      0x7832
 65 #define MCS7830_PRODUCT_ID      0x7830
 66 #define MCS7730_PRODUCT_ID      0x7730
 67 
 68 #define SITECOM_VENDOR_ID       0x0DF6
 69 #define LN_030_PRODUCT_ID       0x0021
 70 
 71 #define MCS7830_MII_ADVERTISE   (ADVERTISE_PAUSE_CAP | ADVERTISE_100FULL | \
 72                                  ADVERTISE_100HALF | ADVERTISE_10FULL | \
 73                                  ADVERTISE_10HALF | ADVERTISE_CSMA)
 74 
 75 /* HIF_REG_XX corresponding index value */
 76 enum {
 77         HIF_REG_MULTICAST_HASH                  = 0x00,
 78         HIF_REG_PACKET_GAP1                     = 0x08,
 79         HIF_REG_PACKET_GAP2                     = 0x09,
 80         HIF_REG_PHY_DATA                        = 0x0a,
 81         HIF_REG_PHY_CMD1                        = 0x0c,
 82            HIF_REG_PHY_CMD1_READ                = 0x40,
 83            HIF_REG_PHY_CMD1_WRITE               = 0x20,
 84            HIF_REG_PHY_CMD1_PHYADDR             = 0x01,
 85         HIF_REG_PHY_CMD2                        = 0x0d,
 86            HIF_REG_PHY_CMD2_PEND_FLAG_BIT       = 0x80,
 87            HIF_REG_PHY_CMD2_READY_FLAG_BIT      = 0x40,
 88         HIF_REG_CONFIG                          = 0x0e,
 89         /* hmm, spec sez: "R/W", "Except bit 3" (likely TXENABLE). */
 90            HIF_REG_CONFIG_CFG                   = 0x80,
 91            HIF_REG_CONFIG_SPEED100              = 0x40,
 92            HIF_REG_CONFIG_FULLDUPLEX_ENABLE     = 0x20,
 93            HIF_REG_CONFIG_RXENABLE              = 0x10,
 94            HIF_REG_CONFIG_TXENABLE              = 0x08,
 95            HIF_REG_CONFIG_SLEEPMODE             = 0x04,
 96            HIF_REG_CONFIG_ALLMULTICAST          = 0x02,
 97            HIF_REG_CONFIG_PROMISCUOUS           = 0x01,
 98         HIF_REG_ETHERNET_ADDR                   = 0x0f,
 99         HIF_REG_FRAME_DROP_COUNTER              = 0x15, /* 0..ff; reset: 0 */
100         HIF_REG_PAUSE_THRESHOLD                 = 0x16,
101            HIF_REG_PAUSE_THRESHOLD_DEFAULT      = 0,
102 };
103 
104 /* Trailing status byte in Ethernet Rx frame */
105 enum {
106         MCS7830_RX_SHORT_FRAME          = 0x01, /* < 64 bytes */
107         MCS7830_RX_LENGTH_ERROR         = 0x02, /* framelen != Ethernet length field */
108         MCS7830_RX_ALIGNMENT_ERROR      = 0x04, /* non-even number of nibbles */
109         MCS7830_RX_CRC_ERROR            = 0x08,
110         MCS7830_RX_LARGE_FRAME          = 0x10, /* > 1518 bytes */
111         MCS7830_RX_FRAME_CORRECT        = 0x20, /* frame is correct */
112         /* [7:6] reserved */
113 };
114 
115 struct mcs7830_data {
116         u8 multi_filter[8];
117         u8 config;
118 };
119 
120 static const char driver_name[] = "MOSCHIP usb-ethernet driver";
121 
122 static int mcs7830_get_reg(struct usbnet *dev, u16 index, u16 size, void *data)
123 {
124         return usbnet_read_cmd(dev, MCS7830_RD_BREQ, MCS7830_RD_BMREQ,
125                                 0x0000, index, data, size);
126 }
127 
128 static int mcs7830_set_reg(struct usbnet *dev, u16 index, u16 size, const void *data)
129 {
130         return usbnet_write_cmd(dev, MCS7830_WR_BREQ, MCS7830_WR_BMREQ,
131                                 0x0000, index, data, size);
132 }
133 
134 static void mcs7830_set_reg_async(struct usbnet *dev, u16 index, u16 size, void *data)
135 {
136         usbnet_write_cmd_async(dev, MCS7830_WR_BREQ, MCS7830_WR_BMREQ,
137                                 0x0000, index, data, size);
138 }
139 
140 static int mcs7830_hif_get_mac_address(struct usbnet *dev, unsigned char *addr)
141 {
142         int ret = mcs7830_get_reg(dev, HIF_REG_ETHERNET_ADDR, ETH_ALEN, addr);
143         if (ret < 0)
144                 return ret;
145         return 0;
146 }
147 
148 static int mcs7830_hif_set_mac_address(struct usbnet *dev, unsigned char *addr)
149 {
150         int ret = mcs7830_set_reg(dev, HIF_REG_ETHERNET_ADDR, ETH_ALEN, addr);
151 
152         if (ret < 0)
153                 return ret;
154         return 0;
155 }
156 
157 static int mcs7830_set_mac_address(struct net_device *netdev, void *p)
158 {
159         int ret;
160         struct usbnet *dev = netdev_priv(netdev);
161         struct sockaddr *addr = p;
162 
163         if (netif_running(netdev))
164                 return -EBUSY;
165 
166         if (!is_valid_ether_addr(addr->sa_data))
167                 return -EADDRNOTAVAIL;
168 
169         ret = mcs7830_hif_set_mac_address(dev, addr->sa_data);
170 
171         if (ret < 0)
172                 return ret;
173 
174         /* it worked --> adopt it on netdev side */
175         memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
176 
177         return 0;
178 }
179 
180 static int mcs7830_read_phy(struct usbnet *dev, u8 index)
181 {
182         int ret;
183         int i;
184         __le16 val;
185 
186         u8 cmd[2] = {
187                 HIF_REG_PHY_CMD1_READ | HIF_REG_PHY_CMD1_PHYADDR,
188                 HIF_REG_PHY_CMD2_PEND_FLAG_BIT | index,
189         };
190 
191         mutex_lock(&dev->phy_mutex);
192         /* write the MII command */
193         ret = mcs7830_set_reg(dev, HIF_REG_PHY_CMD1, 2, cmd);
194         if (ret < 0)
195                 goto out;
196 
197         /* wait for the data to become valid, should be within < 1ms */
198         for (i = 0; i < 10; i++) {
199                 ret = mcs7830_get_reg(dev, HIF_REG_PHY_CMD1, 2, cmd);
200                 if ((ret < 0) || (cmd[1] & HIF_REG_PHY_CMD2_READY_FLAG_BIT))
201                         break;
202                 ret = -EIO;
203                 msleep(1);
204         }
205         if (ret < 0)
206                 goto out;
207 
208         /* read actual register contents */
209         ret = mcs7830_get_reg(dev, HIF_REG_PHY_DATA, 2, &val);
210         if (ret < 0)
211                 goto out;
212         ret = le16_to_cpu(val);
213         dev_dbg(&dev->udev->dev, "read PHY reg %02x: %04x (%d tries)\n",
214                 index, val, i);
215 out:
216         mutex_unlock(&dev->phy_mutex);
217         return ret;
218 }
219 
220 static int mcs7830_write_phy(struct usbnet *dev, u8 index, u16 val)
221 {
222         int ret;
223         int i;
224         __le16 le_val;
225 
226         u8 cmd[2] = {
227                 HIF_REG_PHY_CMD1_WRITE | HIF_REG_PHY_CMD1_PHYADDR,
228                 HIF_REG_PHY_CMD2_PEND_FLAG_BIT | (index & 0x1F),
229         };
230 
231         mutex_lock(&dev->phy_mutex);
232 
233         /* write the new register contents */
234         le_val = cpu_to_le16(val);
235         ret = mcs7830_set_reg(dev, HIF_REG_PHY_DATA, 2, &le_val);
236         if (ret < 0)
237                 goto out;
238 
239         /* write the MII command */
240         ret = mcs7830_set_reg(dev, HIF_REG_PHY_CMD1, 2, cmd);
241         if (ret < 0)
242                 goto out;
243 
244         /* wait for the command to be accepted by the PHY */
245         for (i = 0; i < 10; i++) {
246                 ret = mcs7830_get_reg(dev, HIF_REG_PHY_CMD1, 2, cmd);
247                 if ((ret < 0) || (cmd[1] & HIF_REG_PHY_CMD2_READY_FLAG_BIT))
248                         break;
249                 ret = -EIO;
250                 msleep(1);
251         }
252         if (ret < 0)
253                 goto out;
254 
255         ret = 0;
256         dev_dbg(&dev->udev->dev, "write PHY reg %02x: %04x (%d tries)\n",
257                 index, val, i);
258 out:
259         mutex_unlock(&dev->phy_mutex);
260         return ret;
261 }
262 
263 /*
264  * This algorithm comes from the original mcs7830 version 1.4 driver,
265  * not sure if it is needed.
266  */
267 static int mcs7830_set_autoneg(struct usbnet *dev, int ptrUserPhyMode)
268 {
269         int ret;
270         /* Enable all media types */
271         ret = mcs7830_write_phy(dev, MII_ADVERTISE, MCS7830_MII_ADVERTISE);
272 
273         /* First reset BMCR */
274         if (!ret)
275                 ret = mcs7830_write_phy(dev, MII_BMCR, 0x0000);
276         /* Enable Auto Neg */
277         if (!ret)
278                 ret = mcs7830_write_phy(dev, MII_BMCR, BMCR_ANENABLE);
279         /* Restart Auto Neg (Keep the Enable Auto Neg Bit Set) */
280         if (!ret)
281                 ret = mcs7830_write_phy(dev, MII_BMCR,
282                                 BMCR_ANENABLE | BMCR_ANRESTART  );
283         return ret;
284 }
285 
286 
287 /*
288  * if we can read register 22, the chip revision is C or higher
289  */
290 static int mcs7830_get_rev(struct usbnet *dev)
291 {
292         u8 dummy[2];
293         int ret;
294         ret = mcs7830_get_reg(dev, HIF_REG_FRAME_DROP_COUNTER, 2, dummy);
295         if (ret > 0)
296                 return 2; /* Rev C or later */
297         return 1; /* earlier revision */
298 }
299 
300 /*
301  * On rev. C we need to set the pause threshold
302  */
303 static void mcs7830_rev_C_fixup(struct usbnet *dev)
304 {
305         u8 pause_threshold = HIF_REG_PAUSE_THRESHOLD_DEFAULT;
306         int retry;
307 
308         for (retry = 0; retry < 2; retry++) {
309                 if (mcs7830_get_rev(dev) == 2) {
310                         dev_info(&dev->udev->dev, "applying rev.C fixup\n");
311                         mcs7830_set_reg(dev, HIF_REG_PAUSE_THRESHOLD,
312                                         1, &pause_threshold);
313                 }
314                 msleep(1);
315         }
316 }
317 
318 static int mcs7830_mdio_read(struct net_device *netdev, int phy_id,
319                              int location)
320 {
321         struct usbnet *dev = netdev_priv(netdev);
322         return mcs7830_read_phy(dev, location);
323 }
324 
325 static void mcs7830_mdio_write(struct net_device *netdev, int phy_id,
326                                 int location, int val)
327 {
328         struct usbnet *dev = netdev_priv(netdev);
329         mcs7830_write_phy(dev, location, val);
330 }
331 
332 static int mcs7830_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
333 {
334         struct usbnet *dev = netdev_priv(net);
335         return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
336 }
337 
338 static inline struct mcs7830_data *mcs7830_get_data(struct usbnet *dev)
339 {
340         return (struct mcs7830_data *)&dev->data;
341 }
342 
343 static void mcs7830_hif_update_multicast_hash(struct usbnet *dev)
344 {
345         struct mcs7830_data *data = mcs7830_get_data(dev);
346         mcs7830_set_reg_async(dev, HIF_REG_MULTICAST_HASH,
347                                 sizeof data->multi_filter,
348                                 data->multi_filter);
349 }
350 
351 static void mcs7830_hif_update_config(struct usbnet *dev)
352 {
353         /* implementation specific to data->config
354            (argument needs to be heap-based anyway - USB DMA!) */
355         struct mcs7830_data *data = mcs7830_get_data(dev);
356         mcs7830_set_reg_async(dev, HIF_REG_CONFIG, 1, &data->config);
357 }
358 
359 static void mcs7830_data_set_multicast(struct net_device *net)
360 {
361         struct usbnet *dev = netdev_priv(net);
362         struct mcs7830_data *data = mcs7830_get_data(dev);
363 
364         memset(data->multi_filter, 0, sizeof data->multi_filter);
365 
366         data->config = HIF_REG_CONFIG_TXENABLE;
367 
368         /* this should not be needed, but it doesn't work otherwise */
369         data->config |= HIF_REG_CONFIG_ALLMULTICAST;
370 
371         if (net->flags & IFF_PROMISC) {
372                 data->config |= HIF_REG_CONFIG_PROMISCUOUS;
373         } else if (net->flags & IFF_ALLMULTI ||
374                    netdev_mc_count(net) > MCS7830_MAX_MCAST) {
375                 data->config |= HIF_REG_CONFIG_ALLMULTICAST;
376         } else if (netdev_mc_empty(net)) {
377                 /* just broadcast and directed */
378         } else {
379                 /* We use the 20 byte dev->data
380                  * for our 8 byte filter buffer
381                  * to avoid allocating memory that
382                  * is tricky to free later */
383                 struct netdev_hw_addr *ha;
384                 u32 crc_bits;
385 
386                 /* Build the multicast hash filter. */
387                 netdev_for_each_mc_addr(ha, net) {
388                         crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26;
389                         data->multi_filter[crc_bits >> 3] |= 1 << (crc_bits & 7);
390                 }
391         }
392 }
393 
394 static int mcs7830_apply_base_config(struct usbnet *dev)
395 {
396         int ret;
397 
398         /* re-configure known MAC (suspend case etc.) */
399         ret = mcs7830_hif_set_mac_address(dev, dev->net->dev_addr);
400         if (ret) {
401                 dev_info(&dev->udev->dev, "Cannot set MAC address\n");
402                 goto out;
403         }
404 
405         /* Set up PHY */
406         ret = mcs7830_set_autoneg(dev, 0);
407         if (ret) {
408                 dev_info(&dev->udev->dev, "Cannot set autoneg\n");
409                 goto out;
410         }
411 
412         mcs7830_hif_update_multicast_hash(dev);
413         mcs7830_hif_update_config(dev);
414 
415         mcs7830_rev_C_fixup(dev);
416         ret = 0;
417 out:
418         return ret;
419 }
420 
421 /* credits go to asix_set_multicast */
422 static void mcs7830_set_multicast(struct net_device *net)
423 {
424         struct usbnet *dev = netdev_priv(net);
425 
426         mcs7830_data_set_multicast(net);
427 
428         mcs7830_hif_update_multicast_hash(dev);
429         mcs7830_hif_update_config(dev);
430 }
431 
432 static int mcs7830_get_regs_len(struct net_device *net)
433 {
434         struct usbnet *dev = netdev_priv(net);
435 
436         switch (mcs7830_get_rev(dev)) {
437         case 1:
438                 return 21;
439         case 2:
440                 return 32;
441         }
442         return 0;
443 }
444 
445 static void mcs7830_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *drvinfo)
446 {
447         usbnet_get_drvinfo(net, drvinfo);
448         drvinfo->regdump_len = mcs7830_get_regs_len(net);
449 }
450 
451 static void mcs7830_get_regs(struct net_device *net, struct ethtool_regs *regs, void *data)
452 {
453         struct usbnet *dev = netdev_priv(net);
454 
455         regs->version = mcs7830_get_rev(dev);
456         mcs7830_get_reg(dev, 0, regs->len, data);
457 }
458 
459 static const struct ethtool_ops mcs7830_ethtool_ops = {
460         .get_drvinfo            = mcs7830_get_drvinfo,
461         .get_regs_len           = mcs7830_get_regs_len,
462         .get_regs               = mcs7830_get_regs,
463 
464         /* common usbnet calls */
465         .get_link               = usbnet_get_link,
466         .get_msglevel           = usbnet_get_msglevel,
467         .set_msglevel           = usbnet_set_msglevel,
468         .get_settings           = usbnet_get_settings,
469         .set_settings           = usbnet_set_settings,
470         .nway_reset             = usbnet_nway_reset,
471 };
472 
473 static const struct net_device_ops mcs7830_netdev_ops = {
474         .ndo_open               = usbnet_open,
475         .ndo_stop               = usbnet_stop,
476         .ndo_start_xmit         = usbnet_start_xmit,
477         .ndo_tx_timeout         = usbnet_tx_timeout,
478         .ndo_change_mtu         = usbnet_change_mtu,
479         .ndo_validate_addr      = eth_validate_addr,
480         .ndo_do_ioctl           = mcs7830_ioctl,
481         .ndo_set_rx_mode        = mcs7830_set_multicast,
482         .ndo_set_mac_address    = mcs7830_set_mac_address,
483 };
484 
485 static int mcs7830_bind(struct usbnet *dev, struct usb_interface *udev)
486 {
487         struct net_device *net = dev->net;
488         int ret;
489         int retry;
490 
491         /* Initial startup: Gather MAC address setting from EEPROM */
492         ret = -EINVAL;
493         for (retry = 0; retry < 5 && ret; retry++)
494                 ret = mcs7830_hif_get_mac_address(dev, net->dev_addr);
495         if (ret) {
496                 dev_warn(&dev->udev->dev, "Cannot read MAC address\n");
497                 goto out;
498         }
499 
500         mcs7830_data_set_multicast(net);
501 
502         ret = mcs7830_apply_base_config(dev);
503         if (ret)
504                 goto out;
505 
506         net->ethtool_ops = &mcs7830_ethtool_ops;
507         net->netdev_ops = &mcs7830_netdev_ops;
508 
509         /* reserve space for the status byte on rx */
510         dev->rx_urb_size = ETH_FRAME_LEN + 1;
511 
512         dev->mii.mdio_read = mcs7830_mdio_read;
513         dev->mii.mdio_write = mcs7830_mdio_write;
514         dev->mii.dev = net;
515         dev->mii.phy_id_mask = 0x3f;
516         dev->mii.reg_num_mask = 0x1f;
517         dev->mii.phy_id = *((u8 *) net->dev_addr + 1);
518 
519         ret = usbnet_get_endpoints(dev, udev);
520 out:
521         return ret;
522 }
523 
524 /* The chip always appends a status byte that we need to strip */
525 static int mcs7830_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
526 {
527         u8 status;
528 
529         /* This check is no longer done by usbnet */
530         if (skb->len < dev->net->hard_header_len) {
531                 dev_err(&dev->udev->dev, "unexpected tiny rx frame\n");
532                 return 0;
533         }
534 
535         skb_trim(skb, skb->len - 1);
536         status = skb->data[skb->len];
537 
538         if (status != MCS7830_RX_FRAME_CORRECT) {
539                 dev_dbg(&dev->udev->dev, "rx fixup status %x\n", status);
540 
541                 /* hmm, perhaps usbnet.c already sees a globally visible
542                    frame error and increments rx_errors on its own already? */
543                 dev->net->stats.rx_errors++;
544 
545                 if (status &    (MCS7830_RX_SHORT_FRAME
546                                 |MCS7830_RX_LENGTH_ERROR
547                                 |MCS7830_RX_LARGE_FRAME))
548                         dev->net->stats.rx_length_errors++;
549                 if (status & MCS7830_RX_ALIGNMENT_ERROR)
550                         dev->net->stats.rx_frame_errors++;
551                 if (status & MCS7830_RX_CRC_ERROR)
552                         dev->net->stats.rx_crc_errors++;
553         }
554 
555         return skb->len > 0;
556 }
557 
558 static void mcs7830_status(struct usbnet *dev, struct urb *urb)
559 {
560         u8 *buf = urb->transfer_buffer;
561         bool link, link_changed;
562 
563         if (urb->actual_length < 16)
564                 return;
565 
566         link = !(buf[1] == 0x20);
567         link_changed = netif_carrier_ok(dev->net) != link;
568         if (link_changed) {
569                 usbnet_link_change(dev, link, 0);
570                 netdev_dbg(dev->net, "Link Status is: %d\n", link);
571         }
572 }
573 
574 static const struct driver_info moschip_info = {
575         .description    = "MOSCHIP 7830/7832/7730 usb-NET adapter",
576         .bind           = mcs7830_bind,
577         .rx_fixup       = mcs7830_rx_fixup,
578         .flags          = FLAG_ETHER | FLAG_LINK_INTR,
579         .status         = mcs7830_status,
580         .in             = 1,
581         .out            = 2,
582 };
583 
584 static const struct driver_info sitecom_info = {
585         .description    = "Sitecom LN-30 usb-NET adapter",
586         .bind           = mcs7830_bind,
587         .rx_fixup       = mcs7830_rx_fixup,
588         .flags          = FLAG_ETHER | FLAG_LINK_INTR,
589         .status         = mcs7830_status,
590         .in             = 1,
591         .out            = 2,
592 };
593 
594 static const struct usb_device_id products[] = {
595         {
596                 USB_DEVICE(MCS7830_VENDOR_ID, MCS7832_PRODUCT_ID),
597                 .driver_info = (unsigned long) &moschip_info,
598         },
599         {
600                 USB_DEVICE(MCS7830_VENDOR_ID, MCS7830_PRODUCT_ID),
601                 .driver_info = (unsigned long) &moschip_info,
602         },
603         {
604                 USB_DEVICE(MCS7830_VENDOR_ID, MCS7730_PRODUCT_ID),
605                 .driver_info = (unsigned long) &moschip_info,
606         },
607         {
608                 USB_DEVICE(SITECOM_VENDOR_ID, LN_030_PRODUCT_ID),
609                 .driver_info = (unsigned long) &sitecom_info,
610         },
611         {},
612 };
613 MODULE_DEVICE_TABLE(usb, products);
614 
615 static int mcs7830_reset_resume (struct usb_interface *intf)
616 {
617         /* YES, this function is successful enough that ethtool -d
618            does show same output pre-/post-suspend */
619 
620         struct usbnet           *dev = usb_get_intfdata(intf);
621 
622         mcs7830_apply_base_config(dev);
623 
624         usbnet_resume(intf);
625 
626         return 0;
627 }
628 
629 static struct usb_driver mcs7830_driver = {
630         .name = driver_name,
631         .id_table = products,
632         .probe = usbnet_probe,
633         .disconnect = usbnet_disconnect,
634         .suspend = usbnet_suspend,
635         .resume = usbnet_resume,
636         .reset_resume = mcs7830_reset_resume,
637         .disable_hub_initiated_lpm = 1,
638 };
639 
640 module_usb_driver(mcs7830_driver);
641 
642 MODULE_DESCRIPTION("USB to network adapter MCS7830)");
643 MODULE_LICENSE("GPL");
644 

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