Commit | Line | Data |
---|---|---|
2a36d708 | 1 | /* |
bbccc16c | 2 | * MOSCHIP MCS7830 based (7730/7830/7832) USB 2.0 Ethernet Devices |
2a36d708 AB |
3 | * |
4 | * based on usbnet.c, asix.c and the vendor provided mcs7830 driver | |
5 | * | |
76802851 | 6 | * Copyright (C) 2010 Andreas Mohr <andi@lisas.de> |
2a36d708 AB |
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 | * | |
76802851 AM |
12 | * Definitions gathered from MOSCHIP, Data Sheet_7830DA.pdf (thanks!). |
13 | * | |
bbccc16c AM |
14 | * 2010-12-19: add 7832 USB PID ("functionality same as MCS7830"), |
15 | * per active notification by manufacturer | |
16 | * | |
76802851 | 17 | * TODO: |
76802851 AM |
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 | * | |
2a36d708 AB |
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 | |
9cb00073 | 39 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
2a36d708 AB |
40 | */ |
41 | ||
42 | #include <linux/crc32.h> | |
43 | #include <linux/etherdevice.h> | |
44 | #include <linux/ethtool.h> | |
45 | #include <linux/init.h> | |
46 | #include <linux/mii.h> | |
47 | #include <linux/module.h> | |
48 | #include <linux/netdevice.h> | |
5a0e3ad6 | 49 | #include <linux/slab.h> |
2a36d708 | 50 | #include <linux/usb.h> |
3692e94f | 51 | #include <linux/usb/usbnet.h> |
2a36d708 AB |
52 | |
53 | /* requests */ | |
54 | #define MCS7830_RD_BMREQ (USB_DIR_IN | USB_TYPE_VENDOR | \ | |
55 | USB_RECIP_DEVICE) | |
56 | #define MCS7830_WR_BMREQ (USB_DIR_OUT | USB_TYPE_VENDOR | \ | |
57 | USB_RECIP_DEVICE) | |
58 | #define MCS7830_RD_BREQ 0x0E | |
59 | #define MCS7830_WR_BREQ 0x0D | |
60 | ||
61 | #define MCS7830_CTRL_TIMEOUT 1000 | |
62 | #define MCS7830_MAX_MCAST 64 | |
63 | ||
64 | #define MCS7830_VENDOR_ID 0x9710 | |
bbccc16c | 65 | #define MCS7832_PRODUCT_ID 0x7832 |
2a36d708 | 66 | #define MCS7830_PRODUCT_ID 0x7830 |
8382cc1c AB |
67 | #define MCS7730_PRODUCT_ID 0x7730 |
68 | ||
69 | #define SITECOM_VENDOR_ID 0x0DF6 | |
70 | #define LN_030_PRODUCT_ID 0x0021 | |
2a36d708 AB |
71 | |
72 | #define MCS7830_MII_ADVERTISE (ADVERTISE_PAUSE_CAP | ADVERTISE_100FULL | \ | |
73 | ADVERTISE_100HALF | ADVERTISE_10FULL | \ | |
74 | ADVERTISE_10HALF | ADVERTISE_CSMA) | |
75 | ||
00e49913 | 76 | /* HIF_REG_XX corresponding index value */ |
2a36d708 AB |
77 | enum { |
78 | HIF_REG_MULTICAST_HASH = 0x00, | |
79 | HIF_REG_PACKET_GAP1 = 0x08, | |
80 | HIF_REG_PACKET_GAP2 = 0x09, | |
81 | HIF_REG_PHY_DATA = 0x0a, | |
82 | HIF_REG_PHY_CMD1 = 0x0c, | |
83 | HIF_REG_PHY_CMD1_READ = 0x40, | |
84 | HIF_REG_PHY_CMD1_WRITE = 0x20, | |
85 | HIF_REG_PHY_CMD1_PHYADDR = 0x01, | |
86 | HIF_REG_PHY_CMD2 = 0x0d, | |
87 | HIF_REG_PHY_CMD2_PEND_FLAG_BIT = 0x80, | |
88 | HIF_REG_PHY_CMD2_READY_FLAG_BIT = 0x40, | |
89 | HIF_REG_CONFIG = 0x0e, | |
c774651a | 90 | /* hmm, spec sez: "R/W", "Except bit 3" (likely TXENABLE). */ |
2a36d708 AB |
91 | HIF_REG_CONFIG_CFG = 0x80, |
92 | HIF_REG_CONFIG_SPEED100 = 0x40, | |
93 | HIF_REG_CONFIG_FULLDUPLEX_ENABLE = 0x20, | |
94 | HIF_REG_CONFIG_RXENABLE = 0x10, | |
95 | HIF_REG_CONFIG_TXENABLE = 0x08, | |
96 | HIF_REG_CONFIG_SLEEPMODE = 0x04, | |
97 | HIF_REG_CONFIG_ALLMULTICAST = 0x02, | |
00e49913 | 98 | HIF_REG_CONFIG_PROMISCUOUS = 0x01, |
2a36d708 | 99 | HIF_REG_ETHERNET_ADDR = 0x0f, |
c774651a | 100 | HIF_REG_FRAME_DROP_COUNTER = 0x15, /* 0..ff; reset: 0 */ |
2a36d708 AB |
101 | HIF_REG_PAUSE_THRESHOLD = 0x16, |
102 | HIF_REG_PAUSE_THRESHOLD_DEFAULT = 0, | |
103 | }; | |
104 | ||
76802851 AM |
105 | /* Trailing status byte in Ethernet Rx frame */ |
106 | enum { | |
107 | MCS7830_RX_SHORT_FRAME = 0x01, /* < 64 bytes */ | |
108 | MCS7830_RX_LENGTH_ERROR = 0x02, /* framelen != Ethernet length field */ | |
109 | MCS7830_RX_ALIGNMENT_ERROR = 0x04, /* non-even number of nibbles */ | |
110 | MCS7830_RX_CRC_ERROR = 0x08, | |
111 | MCS7830_RX_LARGE_FRAME = 0x10, /* > 1518 bytes */ | |
112 | MCS7830_RX_FRAME_CORRECT = 0x20, /* frame is correct */ | |
113 | /* [7:6] reserved */ | |
114 | }; | |
115 | ||
2a36d708 AB |
116 | struct mcs7830_data { |
117 | u8 multi_filter[8]; | |
118 | u8 config; | |
dabdaf0c | 119 | u8 link_counter; |
2a36d708 AB |
120 | }; |
121 | ||
122 | static const char driver_name[] = "MOSCHIP usb-ethernet driver"; | |
123 | ||
124 | static int mcs7830_get_reg(struct usbnet *dev, u16 index, u16 size, void *data) | |
125 | { | |
9c06a2b5 ML |
126 | return usbnet_read_cmd(dev, MCS7830_RD_BREQ, MCS7830_RD_BMREQ, |
127 | 0x0000, index, data, size); | |
2a36d708 AB |
128 | } |
129 | ||
ace2a4d0 | 130 | static int mcs7830_set_reg(struct usbnet *dev, u16 index, u16 size, const void *data) |
2a36d708 | 131 | { |
9c06a2b5 ML |
132 | return usbnet_write_cmd(dev, MCS7830_WR_BREQ, MCS7830_WR_BMREQ, |
133 | 0x0000, index, data, size); | |
2a36d708 AB |
134 | } |
135 | ||
136 | static void mcs7830_set_reg_async(struct usbnet *dev, u16 index, u16 size, void *data) | |
137 | { | |
9c06a2b5 ML |
138 | usbnet_write_cmd_async(dev, MCS7830_WR_BREQ, MCS7830_WR_BMREQ, |
139 | 0x0000, index, data, size); | |
2a36d708 AB |
140 | } |
141 | ||
ace2a4d0 AM |
142 | static int mcs7830_hif_get_mac_address(struct usbnet *dev, unsigned char *addr) |
143 | { | |
144 | int ret = mcs7830_get_reg(dev, HIF_REG_ETHERNET_ADDR, ETH_ALEN, addr); | |
145 | if (ret < 0) | |
146 | return ret; | |
147 | return 0; | |
148 | } | |
149 | ||
150 | static int mcs7830_hif_set_mac_address(struct usbnet *dev, unsigned char *addr) | |
151 | { | |
152 | int ret = mcs7830_set_reg(dev, HIF_REG_ETHERNET_ADDR, ETH_ALEN, addr); | |
153 | ||
154 | if (ret < 0) | |
155 | return ret; | |
156 | return 0; | |
157 | } | |
158 | ||
159 | static int mcs7830_set_mac_address(struct net_device *netdev, void *p) | |
2a36d708 AB |
160 | { |
161 | int ret; | |
ace2a4d0 AM |
162 | struct usbnet *dev = netdev_priv(netdev); |
163 | struct sockaddr *addr = p; | |
164 | ||
165 | if (netif_running(netdev)) | |
166 | return -EBUSY; | |
167 | ||
168 | if (!is_valid_ether_addr(addr->sa_data)) | |
15b8f4cf | 169 | return -EADDRNOTAVAIL; |
ace2a4d0 AM |
170 | |
171 | ret = mcs7830_hif_set_mac_address(dev, addr->sa_data); | |
172 | ||
2a36d708 AB |
173 | if (ret < 0) |
174 | return ret; | |
ace2a4d0 AM |
175 | |
176 | /* it worked --> adopt it on netdev side */ | |
177 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
178 | ||
2a36d708 AB |
179 | return 0; |
180 | } | |
181 | ||
182 | static int mcs7830_read_phy(struct usbnet *dev, u8 index) | |
183 | { | |
184 | int ret; | |
185 | int i; | |
186 | __le16 val; | |
187 | ||
188 | u8 cmd[2] = { | |
189 | HIF_REG_PHY_CMD1_READ | HIF_REG_PHY_CMD1_PHYADDR, | |
190 | HIF_REG_PHY_CMD2_PEND_FLAG_BIT | index, | |
191 | }; | |
192 | ||
a9fc6338 | 193 | mutex_lock(&dev->phy_mutex); |
2a36d708 AB |
194 | /* write the MII command */ |
195 | ret = mcs7830_set_reg(dev, HIF_REG_PHY_CMD1, 2, cmd); | |
196 | if (ret < 0) | |
197 | goto out; | |
198 | ||
199 | /* wait for the data to become valid, should be within < 1ms */ | |
200 | for (i = 0; i < 10; i++) { | |
201 | ret = mcs7830_get_reg(dev, HIF_REG_PHY_CMD1, 2, cmd); | |
202 | if ((ret < 0) || (cmd[1] & HIF_REG_PHY_CMD2_READY_FLAG_BIT)) | |
203 | break; | |
204 | ret = -EIO; | |
205 | msleep(1); | |
206 | } | |
207 | if (ret < 0) | |
208 | goto out; | |
209 | ||
210 | /* read actual register contents */ | |
211 | ret = mcs7830_get_reg(dev, HIF_REG_PHY_DATA, 2, &val); | |
212 | if (ret < 0) | |
213 | goto out; | |
214 | ret = le16_to_cpu(val); | |
215 | dev_dbg(&dev->udev->dev, "read PHY reg %02x: %04x (%d tries)\n", | |
216 | index, val, i); | |
217 | out: | |
a9fc6338 | 218 | mutex_unlock(&dev->phy_mutex); |
2a36d708 AB |
219 | return ret; |
220 | } | |
221 | ||
222 | static int mcs7830_write_phy(struct usbnet *dev, u8 index, u16 val) | |
223 | { | |
224 | int ret; | |
225 | int i; | |
226 | __le16 le_val; | |
227 | ||
228 | u8 cmd[2] = { | |
229 | HIF_REG_PHY_CMD1_WRITE | HIF_REG_PHY_CMD1_PHYADDR, | |
230 | HIF_REG_PHY_CMD2_PEND_FLAG_BIT | (index & 0x1F), | |
231 | }; | |
232 | ||
a9fc6338 AB |
233 | mutex_lock(&dev->phy_mutex); |
234 | ||
2a36d708 AB |
235 | /* write the new register contents */ |
236 | le_val = cpu_to_le16(val); | |
237 | ret = mcs7830_set_reg(dev, HIF_REG_PHY_DATA, 2, &le_val); | |
238 | if (ret < 0) | |
239 | goto out; | |
240 | ||
241 | /* write the MII command */ | |
242 | ret = mcs7830_set_reg(dev, HIF_REG_PHY_CMD1, 2, cmd); | |
243 | if (ret < 0) | |
244 | goto out; | |
245 | ||
246 | /* wait for the command to be accepted by the PHY */ | |
247 | for (i = 0; i < 10; i++) { | |
248 | ret = mcs7830_get_reg(dev, HIF_REG_PHY_CMD1, 2, cmd); | |
249 | if ((ret < 0) || (cmd[1] & HIF_REG_PHY_CMD2_READY_FLAG_BIT)) | |
250 | break; | |
251 | ret = -EIO; | |
252 | msleep(1); | |
253 | } | |
254 | if (ret < 0) | |
255 | goto out; | |
256 | ||
257 | ret = 0; | |
258 | dev_dbg(&dev->udev->dev, "write PHY reg %02x: %04x (%d tries)\n", | |
259 | index, val, i); | |
260 | out: | |
a9fc6338 | 261 | mutex_unlock(&dev->phy_mutex); |
2a36d708 AB |
262 | return ret; |
263 | } | |
264 | ||
265 | /* | |
266 | * This algorithm comes from the original mcs7830 version 1.4 driver, | |
267 | * not sure if it is needed. | |
268 | */ | |
269 | static int mcs7830_set_autoneg(struct usbnet *dev, int ptrUserPhyMode) | |
270 | { | |
271 | int ret; | |
272 | /* Enable all media types */ | |
273 | ret = mcs7830_write_phy(dev, MII_ADVERTISE, MCS7830_MII_ADVERTISE); | |
274 | ||
275 | /* First reset BMCR */ | |
276 | if (!ret) | |
277 | ret = mcs7830_write_phy(dev, MII_BMCR, 0x0000); | |
278 | /* Enable Auto Neg */ | |
279 | if (!ret) | |
280 | ret = mcs7830_write_phy(dev, MII_BMCR, BMCR_ANENABLE); | |
281 | /* Restart Auto Neg (Keep the Enable Auto Neg Bit Set) */ | |
282 | if (!ret) | |
283 | ret = mcs7830_write_phy(dev, MII_BMCR, | |
284 | BMCR_ANENABLE | BMCR_ANRESTART ); | |
0e214ad8 | 285 | return ret; |
2a36d708 AB |
286 | } |
287 | ||
288 | ||
289 | /* | |
290 | * if we can read register 22, the chip revision is C or higher | |
291 | */ | |
292 | static int mcs7830_get_rev(struct usbnet *dev) | |
293 | { | |
294 | u8 dummy[2]; | |
295 | int ret; | |
c774651a | 296 | ret = mcs7830_get_reg(dev, HIF_REG_FRAME_DROP_COUNTER, 2, dummy); |
2a36d708 AB |
297 | if (ret > 0) |
298 | return 2; /* Rev C or later */ | |
299 | return 1; /* earlier revision */ | |
300 | } | |
301 | ||
302 | /* | |
303 | * On rev. C we need to set the pause threshold | |
304 | */ | |
305 | static void mcs7830_rev_C_fixup(struct usbnet *dev) | |
306 | { | |
307 | u8 pause_threshold = HIF_REG_PAUSE_THRESHOLD_DEFAULT; | |
308 | int retry; | |
309 | ||
310 | for (retry = 0; retry < 2; retry++) { | |
311 | if (mcs7830_get_rev(dev) == 2) { | |
312 | dev_info(&dev->udev->dev, "applying rev.C fixup\n"); | |
313 | mcs7830_set_reg(dev, HIF_REG_PAUSE_THRESHOLD, | |
314 | 1, &pause_threshold); | |
315 | } | |
316 | msleep(1); | |
317 | } | |
318 | } | |
319 | ||
2a36d708 AB |
320 | static int mcs7830_mdio_read(struct net_device *netdev, int phy_id, |
321 | int location) | |
322 | { | |
8f15ea42 | 323 | struct usbnet *dev = netdev_priv(netdev); |
2a36d708 AB |
324 | return mcs7830_read_phy(dev, location); |
325 | } | |
326 | ||
327 | static void mcs7830_mdio_write(struct net_device *netdev, int phy_id, | |
328 | int location, int val) | |
329 | { | |
8f15ea42 | 330 | struct usbnet *dev = netdev_priv(netdev); |
2a36d708 AB |
331 | mcs7830_write_phy(dev, location, val); |
332 | } | |
333 | ||
334 | static int mcs7830_ioctl(struct net_device *net, struct ifreq *rq, int cmd) | |
335 | { | |
336 | struct usbnet *dev = netdev_priv(net); | |
337 | return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL); | |
338 | } | |
339 | ||
ace2a4d0 AM |
340 | static inline struct mcs7830_data *mcs7830_get_data(struct usbnet *dev) |
341 | { | |
342 | return (struct mcs7830_data *)&dev->data; | |
343 | } | |
344 | ||
345 | static void mcs7830_hif_update_multicast_hash(struct usbnet *dev) | |
346 | { | |
347 | struct mcs7830_data *data = mcs7830_get_data(dev); | |
348 | mcs7830_set_reg_async(dev, HIF_REG_MULTICAST_HASH, | |
349 | sizeof data->multi_filter, | |
350 | data->multi_filter); | |
351 | } | |
352 | ||
353 | static void mcs7830_hif_update_config(struct usbnet *dev) | |
354 | { | |
355 | /* implementation specific to data->config | |
356 | (argument needs to be heap-based anyway - USB DMA!) */ | |
357 | struct mcs7830_data *data = mcs7830_get_data(dev); | |
358 | mcs7830_set_reg_async(dev, HIF_REG_CONFIG, 1, &data->config); | |
359 | } | |
360 | ||
361 | static void mcs7830_data_set_multicast(struct net_device *net) | |
2a36d708 AB |
362 | { |
363 | struct usbnet *dev = netdev_priv(net); | |
ace2a4d0 AM |
364 | struct mcs7830_data *data = mcs7830_get_data(dev); |
365 | ||
366 | memset(data->multi_filter, 0, sizeof data->multi_filter); | |
2a36d708 AB |
367 | |
368 | data->config = HIF_REG_CONFIG_TXENABLE; | |
369 | ||
370 | /* this should not be needed, but it doesn't work otherwise */ | |
371 | data->config |= HIF_REG_CONFIG_ALLMULTICAST; | |
372 | ||
373 | if (net->flags & IFF_PROMISC) { | |
00e49913 | 374 | data->config |= HIF_REG_CONFIG_PROMISCUOUS; |
8e95a202 | 375 | } else if (net->flags & IFF_ALLMULTI || |
4cd24eaf | 376 | netdev_mc_count(net) > MCS7830_MAX_MCAST) { |
2a36d708 | 377 | data->config |= HIF_REG_CONFIG_ALLMULTICAST; |
4cd24eaf | 378 | } else if (netdev_mc_empty(net)) { |
2a36d708 AB |
379 | /* just broadcast and directed */ |
380 | } else { | |
381 | /* We use the 20 byte dev->data | |
382 | * for our 8 byte filter buffer | |
383 | * to avoid allocating memory that | |
384 | * is tricky to free later */ | |
22bedad3 | 385 | struct netdev_hw_addr *ha; |
2a36d708 | 386 | u32 crc_bits; |
2a36d708 | 387 | |
2a36d708 | 388 | /* Build the multicast hash filter. */ |
22bedad3 JP |
389 | netdev_for_each_mc_addr(ha, net) { |
390 | crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26; | |
2a36d708 | 391 | data->multi_filter[crc_bits >> 3] |= 1 << (crc_bits & 7); |
2a36d708 | 392 | } |
ace2a4d0 AM |
393 | } |
394 | } | |
2a36d708 | 395 | |
ace2a4d0 AM |
396 | static int mcs7830_apply_base_config(struct usbnet *dev) |
397 | { | |
398 | int ret; | |
399 | ||
400 | /* re-configure known MAC (suspend case etc.) */ | |
401 | ret = mcs7830_hif_set_mac_address(dev, dev->net->dev_addr); | |
402 | if (ret) { | |
403 | dev_info(&dev->udev->dev, "Cannot set MAC address\n"); | |
404 | goto out; | |
2a36d708 AB |
405 | } |
406 | ||
ace2a4d0 AM |
407 | /* Set up PHY */ |
408 | ret = mcs7830_set_autoneg(dev, 0); | |
409 | if (ret) { | |
410 | dev_info(&dev->udev->dev, "Cannot set autoneg\n"); | |
411 | goto out; | |
412 | } | |
413 | ||
414 | mcs7830_hif_update_multicast_hash(dev); | |
415 | mcs7830_hif_update_config(dev); | |
416 | ||
417 | mcs7830_rev_C_fixup(dev); | |
418 | ret = 0; | |
419 | out: | |
420 | return ret; | |
421 | } | |
422 | ||
423 | /* credits go to asix_set_multicast */ | |
424 | static void mcs7830_set_multicast(struct net_device *net) | |
425 | { | |
426 | struct usbnet *dev = netdev_priv(net); | |
427 | ||
428 | mcs7830_data_set_multicast(net); | |
429 | ||
430 | mcs7830_hif_update_multicast_hash(dev); | |
431 | mcs7830_hif_update_config(dev); | |
2a36d708 AB |
432 | } |
433 | ||
434 | static int mcs7830_get_regs_len(struct net_device *net) | |
435 | { | |
436 | struct usbnet *dev = netdev_priv(net); | |
437 | ||
438 | switch (mcs7830_get_rev(dev)) { | |
439 | case 1: | |
440 | return 21; | |
441 | case 2: | |
442 | return 32; | |
443 | } | |
444 | return 0; | |
445 | } | |
446 | ||
447 | static void mcs7830_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *drvinfo) | |
448 | { | |
449 | usbnet_get_drvinfo(net, drvinfo); | |
450 | drvinfo->regdump_len = mcs7830_get_regs_len(net); | |
451 | } | |
452 | ||
453 | static void mcs7830_get_regs(struct net_device *net, struct ethtool_regs *regs, void *data) | |
454 | { | |
455 | struct usbnet *dev = netdev_priv(net); | |
456 | ||
457 | regs->version = mcs7830_get_rev(dev); | |
458 | mcs7830_get_reg(dev, 0, regs->len, data); | |
459 | } | |
460 | ||
0fc0b732 | 461 | static const struct ethtool_ops mcs7830_ethtool_ops = { |
2a36d708 AB |
462 | .get_drvinfo = mcs7830_get_drvinfo, |
463 | .get_regs_len = mcs7830_get_regs_len, | |
464 | .get_regs = mcs7830_get_regs, | |
465 | ||
466 | /* common usbnet calls */ | |
c41286fd | 467 | .get_link = usbnet_get_link, |
2a36d708 AB |
468 | .get_msglevel = usbnet_get_msglevel, |
469 | .set_msglevel = usbnet_set_msglevel, | |
c41286fd AB |
470 | .get_settings = usbnet_get_settings, |
471 | .set_settings = usbnet_set_settings, | |
472 | .nway_reset = usbnet_nway_reset, | |
2a36d708 AB |
473 | }; |
474 | ||
e12c4f83 SH |
475 | static const struct net_device_ops mcs7830_netdev_ops = { |
476 | .ndo_open = usbnet_open, | |
477 | .ndo_stop = usbnet_stop, | |
478 | .ndo_start_xmit = usbnet_start_xmit, | |
479 | .ndo_tx_timeout = usbnet_tx_timeout, | |
480 | .ndo_change_mtu = usbnet_change_mtu, | |
481 | .ndo_validate_addr = eth_validate_addr, | |
482 | .ndo_do_ioctl = mcs7830_ioctl, | |
afc4b13d | 483 | .ndo_set_rx_mode = mcs7830_set_multicast, |
00e49913 | 484 | .ndo_set_mac_address = mcs7830_set_mac_address, |
e12c4f83 SH |
485 | }; |
486 | ||
2a36d708 AB |
487 | static int mcs7830_bind(struct usbnet *dev, struct usb_interface *udev) |
488 | { | |
489 | struct net_device *net = dev->net; | |
490 | int ret; | |
ace2a4d0 | 491 | int retry; |
2a36d708 | 492 | |
ace2a4d0 AM |
493 | /* Initial startup: Gather MAC address setting from EEPROM */ |
494 | ret = -EINVAL; | |
495 | for (retry = 0; retry < 5 && ret; retry++) | |
496 | ret = mcs7830_hif_get_mac_address(dev, net->dev_addr); | |
497 | if (ret) { | |
498 | dev_warn(&dev->udev->dev, "Cannot read MAC address\n"); | |
499 | goto out; | |
500 | } | |
501 | ||
502 | mcs7830_data_set_multicast(net); | |
503 | ||
504 | ret = mcs7830_apply_base_config(dev); | |
2a36d708 AB |
505 | if (ret) |
506 | goto out; | |
507 | ||
2a36d708 | 508 | net->ethtool_ops = &mcs7830_ethtool_ops; |
e12c4f83 | 509 | net->netdev_ops = &mcs7830_netdev_ops; |
2a36d708 AB |
510 | |
511 | /* reserve space for the status byte on rx */ | |
512 | dev->rx_urb_size = ETH_FRAME_LEN + 1; | |
513 | ||
514 | dev->mii.mdio_read = mcs7830_mdio_read; | |
515 | dev->mii.mdio_write = mcs7830_mdio_write; | |
516 | dev->mii.dev = net; | |
517 | dev->mii.phy_id_mask = 0x3f; | |
518 | dev->mii.reg_num_mask = 0x1f; | |
519 | dev->mii.phy_id = *((u8 *) net->dev_addr + 1); | |
520 | ||
521 | ret = usbnet_get_endpoints(dev, udev); | |
522 | out: | |
523 | return ret; | |
524 | } | |
525 | ||
00e49913 | 526 | /* The chip always appends a status byte that we need to strip */ |
2a36d708 AB |
527 | static int mcs7830_rx_fixup(struct usbnet *dev, struct sk_buff *skb) |
528 | { | |
529 | u8 status; | |
530 | ||
531 | if (skb->len == 0) { | |
532 | dev_err(&dev->udev->dev, "unexpected empty rx frame\n"); | |
533 | return 0; | |
534 | } | |
535 | ||
536 | skb_trim(skb, skb->len - 1); | |
537 | status = skb->data[skb->len]; | |
538 | ||
76802851 | 539 | if (status != MCS7830_RX_FRAME_CORRECT) { |
2a36d708 AB |
540 | dev_dbg(&dev->udev->dev, "rx fixup status %x\n", status); |
541 | ||
76802851 AM |
542 | /* hmm, perhaps usbnet.c already sees a globally visible |
543 | frame error and increments rx_errors on its own already? */ | |
544 | dev->net->stats.rx_errors++; | |
545 | ||
546 | if (status & (MCS7830_RX_SHORT_FRAME | |
547 | |MCS7830_RX_LENGTH_ERROR | |
548 | |MCS7830_RX_LARGE_FRAME)) | |
549 | dev->net->stats.rx_length_errors++; | |
550 | if (status & MCS7830_RX_ALIGNMENT_ERROR) | |
551 | dev->net->stats.rx_frame_errors++; | |
552 | if (status & MCS7830_RX_CRC_ERROR) | |
553 | dev->net->stats.rx_crc_errors++; | |
554 | } | |
555 | ||
2a36d708 AB |
556 | return skb->len > 0; |
557 | } | |
558 | ||
b1ff4f96 OZ |
559 | static void mcs7830_status(struct usbnet *dev, struct urb *urb) |
560 | { | |
561 | u8 *buf = urb->transfer_buffer; | |
dabdaf0c OZ |
562 | bool link, link_changed; |
563 | struct mcs7830_data *data = mcs7830_get_data(dev); | |
b1ff4f96 OZ |
564 | |
565 | if (urb->actual_length < 16) | |
566 | return; | |
567 | ||
568 | link = !(buf[1] & 0x20); | |
dabdaf0c OZ |
569 | link_changed = netif_carrier_ok(dev->net) != link; |
570 | if (link_changed) { | |
571 | data->link_counter++; | |
572 | /* | |
573 | track link state 20 times to guard against erroneous | |
574 | link state changes reported sometimes by the chip | |
575 | */ | |
576 | if (data->link_counter > 20) { | |
577 | data->link_counter = 0; | |
4be74c13 | 578 | usbnet_link_change(dev, link, 0); |
dabdaf0c OZ |
579 | netdev_dbg(dev->net, "Link Status is: %d\n", link); |
580 | } | |
581 | } else | |
582 | data->link_counter = 0; | |
b1ff4f96 OZ |
583 | } |
584 | ||
2a36d708 | 585 | static const struct driver_info moschip_info = { |
bbccc16c | 586 | .description = "MOSCHIP 7830/7832/7730 usb-NET adapter", |
8382cc1c AB |
587 | .bind = mcs7830_bind, |
588 | .rx_fixup = mcs7830_rx_fixup, | |
b1ff4f96 OZ |
589 | .flags = FLAG_ETHER | FLAG_LINK_INTR, |
590 | .status = mcs7830_status, | |
8382cc1c AB |
591 | .in = 1, |
592 | .out = 2, | |
593 | }; | |
594 | ||
595 | static const struct driver_info sitecom_info = { | |
596 | .description = "Sitecom LN-30 usb-NET adapter", | |
2a36d708 AB |
597 | .bind = mcs7830_bind, |
598 | .rx_fixup = mcs7830_rx_fixup, | |
b1ff4f96 OZ |
599 | .flags = FLAG_ETHER | FLAG_LINK_INTR, |
600 | .status = mcs7830_status, | |
2a36d708 AB |
601 | .in = 1, |
602 | .out = 2, | |
603 | }; | |
604 | ||
605 | static const struct usb_device_id products[] = { | |
bbccc16c AM |
606 | { |
607 | USB_DEVICE(MCS7830_VENDOR_ID, MCS7832_PRODUCT_ID), | |
608 | .driver_info = (unsigned long) &moschip_info, | |
609 | }, | |
2a36d708 AB |
610 | { |
611 | USB_DEVICE(MCS7830_VENDOR_ID, MCS7830_PRODUCT_ID), | |
612 | .driver_info = (unsigned long) &moschip_info, | |
613 | }, | |
8382cc1c AB |
614 | { |
615 | USB_DEVICE(MCS7830_VENDOR_ID, MCS7730_PRODUCT_ID), | |
616 | .driver_info = (unsigned long) &moschip_info, | |
617 | }, | |
618 | { | |
619 | USB_DEVICE(SITECOM_VENDOR_ID, LN_030_PRODUCT_ID), | |
620 | .driver_info = (unsigned long) &sitecom_info, | |
621 | }, | |
2a36d708 AB |
622 | {}, |
623 | }; | |
624 | MODULE_DEVICE_TABLE(usb, products); | |
625 | ||
ace2a4d0 AM |
626 | static int mcs7830_reset_resume (struct usb_interface *intf) |
627 | { | |
628 | /* YES, this function is successful enough that ethtool -d | |
629 | does show same output pre-/post-suspend */ | |
630 | ||
631 | struct usbnet *dev = usb_get_intfdata(intf); | |
632 | ||
633 | mcs7830_apply_base_config(dev); | |
634 | ||
635 | usbnet_resume(intf); | |
636 | ||
637 | return 0; | |
638 | } | |
639 | ||
2a36d708 AB |
640 | static struct usb_driver mcs7830_driver = { |
641 | .name = driver_name, | |
642 | .id_table = products, | |
643 | .probe = usbnet_probe, | |
644 | .disconnect = usbnet_disconnect, | |
645 | .suspend = usbnet_suspend, | |
646 | .resume = usbnet_resume, | |
ace2a4d0 | 647 | .reset_resume = mcs7830_reset_resume, |
e1f12eb6 | 648 | .disable_hub_initiated_lpm = 1, |
2a36d708 AB |
649 | }; |
650 | ||
d632eb1b | 651 | module_usb_driver(mcs7830_driver); |
2a36d708 AB |
652 | |
653 | MODULE_DESCRIPTION("USB to network adapter MCS7830)"); | |
654 | MODULE_LICENSE("GPL"); |