blob: 4f345bd4e6e29558daf29c3d472d2c0768c3202f [file] [log] [blame]
Arnd Bergmann2a36d702006-10-09 00:08:00 +02001/*
Andreas Mohrbbccc162010-12-20 10:38:47 -08002 * MOSCHIP MCS7830 based (7730/7830/7832) USB 2.0 Ethernet Devices
Arnd Bergmann2a36d702006-10-09 00:08:00 +02003 *
4 * based on usbnet.c, asix.c and the vendor provided mcs7830 driver
5 *
Andreas Mohr76802852010-01-31 02:58:19 +00006 * Copyright (C) 2010 Andreas Mohr <andi@lisas.de>
Arnd Bergmann2a36d702006-10-09 00:08:00 +02007 * 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 *
Andreas Mohr76802852010-01-31 02:58:19 +000012 * Definitions gathered from MOSCHIP, Data Sheet_7830DA.pdf (thanks!).
13 *
Andreas Mohrbbccc162010-12-20 10:38:47 -080014 * 2010-12-19: add 7832 USB PID ("functionality same as MCS7830"),
15 * per active notification by manufacturer
16 *
Andreas Mohr76802852010-01-31 02:58:19 +000017 * TODO:
Andreas Mohr76802852010-01-31 02:58:19 +000018 * - 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 *
Arnd Bergmann2a36d702006-10-09 00:08:00 +020028 * 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
Jeff Kirsher9cb00072013-12-06 06:28:46 -080039 * along with this program; if not, see <http://www.gnu.org/licenses/>.
Arnd Bergmann2a36d702006-10-09 00:08:00 +020040 */
41
42#include <linux/crc32.h>
43#include <linux/etherdevice.h>
44#include <linux/ethtool.h>
Arnd Bergmann2a36d702006-10-09 00:08:00 +020045#include <linux/mii.h>
46#include <linux/module.h>
47#include <linux/netdevice.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090048#include <linux/slab.h>
Arnd Bergmann2a36d702006-10-09 00:08:00 +020049#include <linux/usb.h>
Jussi Kivilinna3692e942008-01-26 00:51:45 +020050#include <linux/usb/usbnet.h>
Arnd Bergmann2a36d702006-10-09 00:08:00 +020051
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
Andreas Mohrbbccc162010-12-20 10:38:47 -080064#define MCS7832_PRODUCT_ID 0x7832
Arnd Bergmann2a36d702006-10-09 00:08:00 +020065#define MCS7830_PRODUCT_ID 0x7830
Arnd Bergmann8382cc12008-08-23 22:02:23 +020066#define MCS7730_PRODUCT_ID 0x7730
67
68#define SITECOM_VENDOR_ID 0x0DF6
69#define LN_030_PRODUCT_ID 0x0021
Arnd Bergmann2a36d702006-10-09 00:08:00 +020070
71#define MCS7830_MII_ADVERTISE (ADVERTISE_PAUSE_CAP | ADVERTISE_100FULL | \
72 ADVERTISE_100HALF | ADVERTISE_10FULL | \
73 ADVERTISE_10HALF | ADVERTISE_CSMA)
74
Andreas Mohr00e49912010-01-31 02:58:26 +000075/* HIF_REG_XX corresponding index value */
Arnd Bergmann2a36d702006-10-09 00:08:00 +020076enum {
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,
Andreas Mohrc7746512010-01-31 02:58:33 +000089 /* hmm, spec sez: "R/W", "Except bit 3" (likely TXENABLE). */
Arnd Bergmann2a36d702006-10-09 00:08:00 +020090 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,
Andreas Mohr00e49912010-01-31 02:58:26 +000097 HIF_REG_CONFIG_PROMISCUOUS = 0x01,
Arnd Bergmann2a36d702006-10-09 00:08:00 +020098 HIF_REG_ETHERNET_ADDR = 0x0f,
Andreas Mohrc7746512010-01-31 02:58:33 +000099 HIF_REG_FRAME_DROP_COUNTER = 0x15, /* 0..ff; reset: 0 */
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200100 HIF_REG_PAUSE_THRESHOLD = 0x16,
101 HIF_REG_PAUSE_THRESHOLD_DEFAULT = 0,
102};
103
Andreas Mohr76802852010-01-31 02:58:19 +0000104/* Trailing status byte in Ethernet Rx frame */
105enum {
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
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200115struct mcs7830_data {
116 u8 multi_filter[8];
117 u8 config;
118};
119
120static const char driver_name[] = "MOSCHIP usb-ethernet driver";
121
122static int mcs7830_get_reg(struct usbnet *dev, u16 index, u16 size, void *data)
123{
Ming Lei9c06a2b2012-10-24 19:46:59 +0000124 return usbnet_read_cmd(dev, MCS7830_RD_BREQ, MCS7830_RD_BMREQ,
125 0x0000, index, data, size);
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200126}
127
Andreas Mohrace2a4d2010-01-31 02:58:42 +0000128static int mcs7830_set_reg(struct usbnet *dev, u16 index, u16 size, const void *data)
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200129{
Ming Lei9c06a2b2012-10-24 19:46:59 +0000130 return usbnet_write_cmd(dev, MCS7830_WR_BREQ, MCS7830_WR_BMREQ,
131 0x0000, index, data, size);
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200132}
133
134static void mcs7830_set_reg_async(struct usbnet *dev, u16 index, u16 size, void *data)
135{
Ming Lei9c06a2b2012-10-24 19:46:59 +0000136 usbnet_write_cmd_async(dev, MCS7830_WR_BREQ, MCS7830_WR_BMREQ,
137 0x0000, index, data, size);
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200138}
139
Andreas Mohrace2a4d2010-01-31 02:58:42 +0000140static int mcs7830_hif_get_mac_address(struct usbnet *dev, unsigned char *addr)
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200141{
Andreas Mohrace2a4d2010-01-31 02:58:42 +0000142 int ret = mcs7830_get_reg(dev, HIF_REG_ETHERNET_ADDR, ETH_ALEN, addr);
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200143 if (ret < 0)
144 return ret;
145 return 0;
146}
147
Andreas Mohrace2a4d2010-01-31 02:58:42 +0000148static 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
157static 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))
Danny Kukawka15b8f4c2012-02-21 02:07:50 +0000167 return -EADDRNOTAVAIL;
Andreas Mohrace2a4d2010-01-31 02:58:42 +0000168
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
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200180static 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
Arnd Bergmanna9fc6332006-10-09 00:08:02 +0200191 mutex_lock(&dev->phy_mutex);
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200192 /* 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);
215out:
Arnd Bergmanna9fc6332006-10-09 00:08:02 +0200216 mutex_unlock(&dev->phy_mutex);
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200217 return ret;
218}
219
220static 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
Arnd Bergmanna9fc6332006-10-09 00:08:02 +0200231 mutex_lock(&dev->phy_mutex);
232
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200233 /* 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);
258out:
Arnd Bergmanna9fc6332006-10-09 00:08:02 +0200259 mutex_unlock(&dev->phy_mutex);
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200260 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 */
267static 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 );
Dan Carpenter0e214ad2010-12-17 03:25:43 +0000283 return ret;
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200284}
285
286
287/*
288 * if we can read register 22, the chip revision is C or higher
289 */
290static int mcs7830_get_rev(struct usbnet *dev)
291{
292 u8 dummy[2];
293 int ret;
Andreas Mohrc7746512010-01-31 02:58:33 +0000294 ret = mcs7830_get_reg(dev, HIF_REG_FRAME_DROP_COUNTER, 2, dummy);
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200295 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 */
303static 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
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200318static int mcs7830_mdio_read(struct net_device *netdev, int phy_id,
319 int location)
320{
Wang Chen8f15ea42008-11-12 23:38:36 -0800321 struct usbnet *dev = netdev_priv(netdev);
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200322 return mcs7830_read_phy(dev, location);
323}
324
325static void mcs7830_mdio_write(struct net_device *netdev, int phy_id,
326 int location, int val)
327{
Wang Chen8f15ea42008-11-12 23:38:36 -0800328 struct usbnet *dev = netdev_priv(netdev);
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200329 mcs7830_write_phy(dev, location, val);
330}
331
332static 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
Andreas Mohrace2a4d2010-01-31 02:58:42 +0000338static inline struct mcs7830_data *mcs7830_get_data(struct usbnet *dev)
339{
340 return (struct mcs7830_data *)&dev->data;
341}
342
343static 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
351static 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
359static void mcs7830_data_set_multicast(struct net_device *net)
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200360{
361 struct usbnet *dev = netdev_priv(net);
Andreas Mohrace2a4d2010-01-31 02:58:42 +0000362 struct mcs7830_data *data = mcs7830_get_data(dev);
363
364 memset(data->multi_filter, 0, sizeof data->multi_filter);
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200365
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) {
Andreas Mohr00e49912010-01-31 02:58:26 +0000372 data->config |= HIF_REG_CONFIG_PROMISCUOUS;
Joe Perches8e95a202009-12-03 07:58:21 +0000373 } else if (net->flags & IFF_ALLMULTI ||
Jiri Pirko4cd24ea2010-02-08 04:30:35 +0000374 netdev_mc_count(net) > MCS7830_MAX_MCAST) {
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200375 data->config |= HIF_REG_CONFIG_ALLMULTICAST;
Jiri Pirko4cd24ea2010-02-08 04:30:35 +0000376 } else if (netdev_mc_empty(net)) {
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200377 /* 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 */
Jiri Pirko22bedad32010-04-01 21:22:57 +0000383 struct netdev_hw_addr *ha;
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200384 u32 crc_bits;
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200385
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200386 /* Build the multicast hash filter. */
Jiri Pirko22bedad32010-04-01 21:22:57 +0000387 netdev_for_each_mc_addr(ha, net) {
388 crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26;
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200389 data->multi_filter[crc_bits >> 3] |= 1 << (crc_bits & 7);
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200390 }
Andreas Mohrace2a4d2010-01-31 02:58:42 +0000391 }
392}
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200393
Andreas Mohrace2a4d2010-01-31 02:58:42 +0000394static 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;
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200403 }
404
Andreas Mohrace2a4d2010-01-31 02:58:42 +0000405 /* 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;
417out:
418 return ret;
419}
420
421/* credits go to asix_set_multicast */
422static 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);
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200430}
431
432static 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
445static void mcs7830_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *drvinfo)
446{
447 usbnet_get_drvinfo(net, drvinfo);
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200448}
449
450static void mcs7830_get_regs(struct net_device *net, struct ethtool_regs *regs, void *data)
451{
452 struct usbnet *dev = netdev_priv(net);
453
454 regs->version = mcs7830_get_rev(dev);
455 mcs7830_get_reg(dev, 0, regs->len, data);
456}
457
Stephen Hemminger0fc0b732009-09-02 01:03:33 -0700458static const struct ethtool_ops mcs7830_ethtool_ops = {
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200459 .get_drvinfo = mcs7830_get_drvinfo,
460 .get_regs_len = mcs7830_get_regs_len,
461 .get_regs = mcs7830_get_regs,
462
463 /* common usbnet calls */
Arnd Bergmannc41286f2006-10-09 00:08:01 +0200464 .get_link = usbnet_get_link,
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200465 .get_msglevel = usbnet_get_msglevel,
466 .set_msglevel = usbnet_set_msglevel,
Arnd Bergmannc41286f2006-10-09 00:08:01 +0200467 .get_settings = usbnet_get_settings,
468 .set_settings = usbnet_set_settings,
469 .nway_reset = usbnet_nway_reset,
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200470};
471
Stephen Hemmingere12c4f82009-03-20 19:35:57 +0000472static const struct net_device_ops mcs7830_netdev_ops = {
473 .ndo_open = usbnet_open,
474 .ndo_stop = usbnet_stop,
475 .ndo_start_xmit = usbnet_start_xmit,
476 .ndo_tx_timeout = usbnet_tx_timeout,
477 .ndo_change_mtu = usbnet_change_mtu,
478 .ndo_validate_addr = eth_validate_addr,
479 .ndo_do_ioctl = mcs7830_ioctl,
Jiri Pirkoafc4b132011-08-16 06:29:01 +0000480 .ndo_set_rx_mode = mcs7830_set_multicast,
Andreas Mohr00e49912010-01-31 02:58:26 +0000481 .ndo_set_mac_address = mcs7830_set_mac_address,
Stephen Hemmingere12c4f82009-03-20 19:35:57 +0000482};
483
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200484static int mcs7830_bind(struct usbnet *dev, struct usb_interface *udev)
485{
486 struct net_device *net = dev->net;
487 int ret;
Andreas Mohrace2a4d2010-01-31 02:58:42 +0000488 int retry;
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200489
Andreas Mohrace2a4d2010-01-31 02:58:42 +0000490 /* Initial startup: Gather MAC address setting from EEPROM */
491 ret = -EINVAL;
492 for (retry = 0; retry < 5 && ret; retry++)
493 ret = mcs7830_hif_get_mac_address(dev, net->dev_addr);
494 if (ret) {
495 dev_warn(&dev->udev->dev, "Cannot read MAC address\n");
496 goto out;
497 }
498
499 mcs7830_data_set_multicast(net);
500
501 ret = mcs7830_apply_base_config(dev);
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200502 if (ret)
503 goto out;
504
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200505 net->ethtool_ops = &mcs7830_ethtool_ops;
Stephen Hemmingere12c4f82009-03-20 19:35:57 +0000506 net->netdev_ops = &mcs7830_netdev_ops;
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200507
508 /* reserve space for the status byte on rx */
509 dev->rx_urb_size = ETH_FRAME_LEN + 1;
510
511 dev->mii.mdio_read = mcs7830_mdio_read;
512 dev->mii.mdio_write = mcs7830_mdio_write;
513 dev->mii.dev = net;
514 dev->mii.phy_id_mask = 0x3f;
515 dev->mii.reg_num_mask = 0x1f;
516 dev->mii.phy_id = *((u8 *) net->dev_addr + 1);
517
518 ret = usbnet_get_endpoints(dev, udev);
519out:
520 return ret;
521}
522
Andreas Mohr00e49912010-01-31 02:58:26 +0000523/* The chip always appends a status byte that we need to strip */
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200524static int mcs7830_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
525{
526 u8 status;
527
Emil Goodeeb855692014-02-13 17:50:19 +0100528 /* This check is no longer done by usbnet */
529 if (skb->len < dev->net->hard_header_len) {
530 dev_err(&dev->udev->dev, "unexpected tiny rx frame\n");
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200531 return 0;
532 }
533
534 skb_trim(skb, skb->len - 1);
535 status = skb->data[skb->len];
536
Andreas Mohr76802852010-01-31 02:58:19 +0000537 if (status != MCS7830_RX_FRAME_CORRECT) {
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200538 dev_dbg(&dev->udev->dev, "rx fixup status %x\n", status);
539
Andreas Mohr76802852010-01-31 02:58:19 +0000540 /* hmm, perhaps usbnet.c already sees a globally visible
541 frame error and increments rx_errors on its own already? */
542 dev->net->stats.rx_errors++;
543
544 if (status & (MCS7830_RX_SHORT_FRAME
545 |MCS7830_RX_LENGTH_ERROR
546 |MCS7830_RX_LARGE_FRAME))
547 dev->net->stats.rx_length_errors++;
548 if (status & MCS7830_RX_ALIGNMENT_ERROR)
549 dev->net->stats.rx_frame_errors++;
550 if (status & MCS7830_RX_CRC_ERROR)
551 dev->net->stats.rx_crc_errors++;
552 }
553
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200554 return skb->len > 0;
555}
556
Ondrej Zaryb1ff4f92012-06-01 10:29:08 +0000557static void mcs7830_status(struct usbnet *dev, struct urb *urb)
558{
559 u8 *buf = urb->transfer_buffer;
Ondrej Zarydabdaf02012-10-11 22:51:41 +0000560 bool link, link_changed;
Ondrej Zaryb1ff4f92012-06-01 10:29:08 +0000561
562 if (urb->actual_length < 16)
563 return;
564
Octavian Purdila8d88bbf2013-12-23 19:06:31 +0200565 link = !(buf[1] == 0x20);
Ondrej Zarydabdaf02012-10-11 22:51:41 +0000566 link_changed = netif_carrier_ok(dev->net) != link;
567 if (link_changed) {
Octavian Purdila8d88bbf2013-12-23 19:06:31 +0200568 usbnet_link_change(dev, link, 0);
569 netdev_dbg(dev->net, "Link Status is: %d\n", link);
570 }
Ondrej Zaryb1ff4f92012-06-01 10:29:08 +0000571}
572
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200573static const struct driver_info moschip_info = {
Andreas Mohrbbccc162010-12-20 10:38:47 -0800574 .description = "MOSCHIP 7830/7832/7730 usb-NET adapter",
Arnd Bergmann8382cc12008-08-23 22:02:23 +0200575 .bind = mcs7830_bind,
576 .rx_fixup = mcs7830_rx_fixup,
Ondrej Zaryb1ff4f92012-06-01 10:29:08 +0000577 .flags = FLAG_ETHER | FLAG_LINK_INTR,
578 .status = mcs7830_status,
Arnd Bergmann8382cc12008-08-23 22:02:23 +0200579 .in = 1,
580 .out = 2,
581};
582
583static const struct driver_info sitecom_info = {
584 .description = "Sitecom LN-30 usb-NET adapter",
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200585 .bind = mcs7830_bind,
586 .rx_fixup = mcs7830_rx_fixup,
Ondrej Zaryb1ff4f92012-06-01 10:29:08 +0000587 .flags = FLAG_ETHER | FLAG_LINK_INTR,
588 .status = mcs7830_status,
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200589 .in = 1,
590 .out = 2,
591};
592
593static const struct usb_device_id products[] = {
594 {
Andreas Mohrbbccc162010-12-20 10:38:47 -0800595 USB_DEVICE(MCS7830_VENDOR_ID, MCS7832_PRODUCT_ID),
596 .driver_info = (unsigned long) &moschip_info,
597 },
598 {
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200599 USB_DEVICE(MCS7830_VENDOR_ID, MCS7830_PRODUCT_ID),
600 .driver_info = (unsigned long) &moschip_info,
601 },
Arnd Bergmann8382cc12008-08-23 22:02:23 +0200602 {
603 USB_DEVICE(MCS7830_VENDOR_ID, MCS7730_PRODUCT_ID),
604 .driver_info = (unsigned long) &moschip_info,
605 },
606 {
607 USB_DEVICE(SITECOM_VENDOR_ID, LN_030_PRODUCT_ID),
608 .driver_info = (unsigned long) &sitecom_info,
609 },
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200610 {},
611};
612MODULE_DEVICE_TABLE(usb, products);
613
Andreas Mohrace2a4d2010-01-31 02:58:42 +0000614static int mcs7830_reset_resume (struct usb_interface *intf)
615{
616 /* YES, this function is successful enough that ethtool -d
617 does show same output pre-/post-suspend */
618
619 struct usbnet *dev = usb_get_intfdata(intf);
620
621 mcs7830_apply_base_config(dev);
622
623 usbnet_resume(intf);
624
625 return 0;
626}
627
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200628static struct usb_driver mcs7830_driver = {
629 .name = driver_name,
630 .id_table = products,
631 .probe = usbnet_probe,
632 .disconnect = usbnet_disconnect,
633 .suspend = usbnet_suspend,
634 .resume = usbnet_resume,
Andreas Mohrace2a4d2010-01-31 02:58:42 +0000635 .reset_resume = mcs7830_reset_resume,
Sarah Sharpe1f12eb2012-04-23 10:08:51 -0700636 .disable_hub_initiated_lpm = 1,
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200637};
638
Greg Kroah-Hartmand632eb12011-11-18 09:44:20 -0800639module_usb_driver(mcs7830_driver);
Arnd Bergmann2a36d702006-10-09 00:08:00 +0200640
641MODULE_DESCRIPTION("USB to network adapter MCS7830)");
642MODULE_LICENSE("GPL");