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lkdtm: Add Control Flow Integrity test
[linux/fpc-iii.git] / drivers / net / usb / sr9800.c
blob35f39f23d88144195b8f007035f207d38b48c1fd
1 /* CoreChip-sz SR9800 one chip USB 2.0 Ethernet Devices
2 *
3 * Author : Liu Junliang <liujunliang_ljl@163.com>
4 *
5 * Based on asix_common.c, asix_devices.c
6 *
7 * This file is licensed under the terms of the GNU General Public License
8 * version 2. This program is licensed "as is" without any warranty of any
9 * kind, whether express or implied.*
10 */
11
12 #include <linux/module.h>
13 #include <linux/kmod.h>
14 #include <linux/init.h>
15 #include <linux/netdevice.h>
16 #include <linux/etherdevice.h>
17 #include <linux/ethtool.h>
18 #include <linux/workqueue.h>
19 #include <linux/mii.h>
20 #include <linux/usb.h>
21 #include <linux/crc32.h>
22 #include <linux/usb/usbnet.h>
23 #include <linux/slab.h>
24 #include <linux/if_vlan.h>
25
26 #include "sr9800.h"
27
28 static int sr_read_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
29 u16 size, void *data)
30 {
31 int err;
32
33 err = usbnet_read_cmd(dev, cmd, SR_REQ_RD_REG, value, index,
34 data, size);
35 if ((err != size) && (err >= 0))
36 err = -EINVAL;
37
38 return err;
39 }
40
41 static int sr_write_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
42 u16 size, void *data)
43 {
44 int err;
45
46 err = usbnet_write_cmd(dev, cmd, SR_REQ_WR_REG, value, index,
47 data, size);
48 if ((err != size) && (err >= 0))
49 err = -EINVAL;
50
51 return err;
52 }
53
54 static void
55 sr_write_cmd_async(struct usbnet *dev, u8 cmd, u16 value, u16 index,
56 u16 size, void *data)
57 {
58 usbnet_write_cmd_async(dev, cmd, SR_REQ_WR_REG, value, index, data,
59 size);
60 }
61
62 static int sr_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
63 {
64 int offset = 0;
65
66 /* This check is no longer done by usbnet */
67 if (skb->len < dev->net->hard_header_len)
68 return 0;
69
70 while (offset + sizeof(u32) < skb->len) {
71 struct sk_buff *sr_skb;
72 u16 size;
73 u32 header = get_unaligned_le32(skb->data + offset);
74
75 offset += sizeof(u32);
76 /* get the packet length */
77 size = (u16) (header & 0x7ff);
78 if (size != ((~header >> 16) & 0x07ff)) {
79 netdev_err(dev->net, "%s : Bad Header Length\n",
80 __func__);
81 return 0;
82 }
83
84 if ((size > dev->net->mtu + ETH_HLEN + VLAN_HLEN) ||
85 (size + offset > skb->len)) {
86 netdev_err(dev->net, "%s : Bad RX Length %d\n",
87 __func__, size);
88 return 0;
89 }
90 sr_skb = netdev_alloc_skb_ip_align(dev->net, size);
91 if (!sr_skb)
92 return 0;
93
94 skb_put(sr_skb, size);
95 memcpy(sr_skb->data, skb->data + offset, size);
96 usbnet_skb_return(dev, sr_skb);
97
98 offset += (size + 1) & 0xfffe;
99 }
100
101 if (skb->len != offset) {
102 netdev_err(dev->net, "%s : Bad SKB Length %d\n", __func__,
103 skb->len);
104 return 0;
105 }
106
107 return 1;
108 }
109
110 static struct sk_buff *sr_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
111 gfp_t flags)
112 {
113 int headroom = skb_headroom(skb);
114 int tailroom = skb_tailroom(skb);
115 u32 padbytes = 0xffff0000;
116 u32 packet_len;
117 int padlen;
118
119 padlen = ((skb->len + 4) % (dev->maxpacket - 1)) ? 0 : 4;
120
121 if ((!skb_cloned(skb)) && ((headroom + tailroom) >= (4 + padlen))) {
122 if ((headroom < 4) || (tailroom < padlen)) {
123 skb->data = memmove(skb->head + 4, skb->data,
124 skb->len);
125 skb_set_tail_pointer(skb, skb->len);
126 }
127 } else {
128 struct sk_buff *skb2;
129 skb2 = skb_copy_expand(skb, 4, padlen, flags);
130 dev_kfree_skb_any(skb);
131 skb = skb2;
132 if (!skb)
133 return NULL;
134 }
135
136 skb_push(skb, 4);
137 packet_len = (((skb->len - 4) ^ 0x0000ffff) << 16) + (skb->len - 4);
138 cpu_to_le32s(&packet_len);
139 skb_copy_to_linear_data(skb, &packet_len, sizeof(packet_len));
140
141 if (padlen) {
142 cpu_to_le32s(&padbytes);
143 memcpy(skb_tail_pointer(skb), &padbytes, sizeof(padbytes));
144 skb_put(skb, sizeof(padbytes));
145 }
146
147 usbnet_set_skb_tx_stats(skb, 1, 0);
148 return skb;
149 }
150
151 static void sr_status(struct usbnet *dev, struct urb *urb)
152 {
153 struct sr9800_int_data *event;
154 int link;
155
156 if (urb->actual_length < 8)
157 return;
158
159 event = urb->transfer_buffer;
160 link = event->link & 0x01;
161 if (netif_carrier_ok(dev->net) != link) {
162 usbnet_link_change(dev, link, 1);
163 netdev_dbg(dev->net, "Link Status is: %d\n", link);
164 }
165
166 return;
167 }
168
169 static inline int sr_set_sw_mii(struct usbnet *dev)
170 {
171 int ret;
172
173 ret = sr_write_cmd(dev, SR_CMD_SET_SW_MII, 0x0000, 0, 0, NULL);
174 if (ret < 0)
175 netdev_err(dev->net, "Failed to enable software MII access\n");
176 return ret;
177 }
178
179 static inline int sr_set_hw_mii(struct usbnet *dev)
180 {
181 int ret;
182
183 ret = sr_write_cmd(dev, SR_CMD_SET_HW_MII, 0x0000, 0, 0, NULL);
184 if (ret < 0)
185 netdev_err(dev->net, "Failed to enable hardware MII access\n");
186 return ret;
187 }
188
189 static inline int sr_get_phy_addr(struct usbnet *dev)
190 {
191 u8 buf[2];
192 int ret;
193
194 ret = sr_read_cmd(dev, SR_CMD_READ_PHY_ID, 0, 0, 2, buf);
195 if (ret < 0) {
196 netdev_err(dev->net, "%s : Error reading PHYID register:%02x\n",
197 __func__, ret);
198 goto out;
199 }
200 netdev_dbg(dev->net, "%s : returning 0x%04x\n", __func__,
201 *((__le16 *)buf));
202
203 ret = buf[1];
204
205 out:
206 return ret;
207 }
208
209 static int sr_sw_reset(struct usbnet *dev, u8 flags)
210 {
211 int ret;
212
213 ret = sr_write_cmd(dev, SR_CMD_SW_RESET, flags, 0, 0, NULL);
214 if (ret < 0)
215 netdev_err(dev->net, "Failed to send software reset:%02x\n",
216 ret);
217
218 return ret;
219 }
220
221 static u16 sr_read_rx_ctl(struct usbnet *dev)
222 {
223 __le16 v;
224 int ret;
225
226 ret = sr_read_cmd(dev, SR_CMD_READ_RX_CTL, 0, 0, 2, &v);
227 if (ret < 0) {
228 netdev_err(dev->net, "Error reading RX_CTL register:%02x\n",
229 ret);
230 goto out;
231 }
232
233 ret = le16_to_cpu(v);
234 out:
235 return ret;
236 }
237
238 static int sr_write_rx_ctl(struct usbnet *dev, u16 mode)
239 {
240 int ret;
241
242 netdev_dbg(dev->net, "%s : mode = 0x%04x\n", __func__, mode);
243 ret = sr_write_cmd(dev, SR_CMD_WRITE_RX_CTL, mode, 0, 0, NULL);
244 if (ret < 0)
245 netdev_err(dev->net,
246 "Failed to write RX_CTL mode to 0x%04x:%02x\n",
247 mode, ret);
248
249 return ret;
250 }
251
252 static u16 sr_read_medium_status(struct usbnet *dev)
253 {
254 __le16 v;
255 int ret;
256
257 ret = sr_read_cmd(dev, SR_CMD_READ_MEDIUM_STATUS, 0, 0, 2, &v);
258 if (ret < 0) {
259 netdev_err(dev->net,
260 "Error reading Medium Status register:%02x\n", ret);
261 return ret; /* TODO: callers not checking for error ret */
262 }
263
264 return le16_to_cpu(v);
265 }
266
267 static int sr_write_medium_mode(struct usbnet *dev, u16 mode)
268 {
269 int ret;
270
271 netdev_dbg(dev->net, "%s : mode = 0x%04x\n", __func__, mode);
272 ret = sr_write_cmd(dev, SR_CMD_WRITE_MEDIUM_MODE, mode, 0, 0, NULL);
273 if (ret < 0)
274 netdev_err(dev->net,
275 "Failed to write Medium Mode mode to 0x%04x:%02x\n",
276 mode, ret);
277 return ret;
278 }
279
280 static int sr_write_gpio(struct usbnet *dev, u16 value, int sleep)
281 {
282 int ret;
283
284 netdev_dbg(dev->net, "%s : value = 0x%04x\n", __func__, value);
285 ret = sr_write_cmd(dev, SR_CMD_WRITE_GPIOS, value, 0, 0, NULL);
286 if (ret < 0)
287 netdev_err(dev->net, "Failed to write GPIO value 0x%04x:%02x\n",
288 value, ret);
289 if (sleep)
290 msleep(sleep);
291
292 return ret;
293 }
294
295 /* SR9800 have a 16-bit RX_CTL value */
296 static void sr_set_multicast(struct net_device *net)
297 {
298 struct usbnet *dev = netdev_priv(net);
299 struct sr_data *data = (struct sr_data *)&dev->data;
300 u16 rx_ctl = SR_DEFAULT_RX_CTL;
301
302 if (net->flags & IFF_PROMISC) {
303 rx_ctl |= SR_RX_CTL_PRO;
304 } else if (net->flags & IFF_ALLMULTI ||
305 netdev_mc_count(net) > SR_MAX_MCAST) {
306 rx_ctl |= SR_RX_CTL_AMALL;
307 } else if (netdev_mc_empty(net)) {
308 /* just broadcast and directed */
309 } else {
310 /* We use the 20 byte dev->data
311 * for our 8 byte filter buffer
312 * to avoid allocating memory that
313 * is tricky to free later
314 */
315 struct netdev_hw_addr *ha;
316 u32 crc_bits;
317
318 memset(data->multi_filter, 0, SR_MCAST_FILTER_SIZE);
319
320 /* Build the multicast hash filter. */
321 netdev_for_each_mc_addr(ha, net) {
322 crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26;
323 data->multi_filter[crc_bits >> 3] |=
324 1 << (crc_bits & 7);
325 }
326
327 sr_write_cmd_async(dev, SR_CMD_WRITE_MULTI_FILTER, 0, 0,
328 SR_MCAST_FILTER_SIZE, data->multi_filter);
329
330 rx_ctl |= SR_RX_CTL_AM;
331 }
332
333 sr_write_cmd_async(dev, SR_CMD_WRITE_RX_CTL, rx_ctl, 0, 0, NULL);
334 }
335
336 static int sr_mdio_read(struct net_device *net, int phy_id, int loc)
337 {
338 struct usbnet *dev = netdev_priv(net);
339 __le16 res;
340
341 mutex_lock(&dev->phy_mutex);
342 sr_set_sw_mii(dev);
343 sr_read_cmd(dev, SR_CMD_READ_MII_REG, phy_id, (__u16)loc, 2, &res);
344 sr_set_hw_mii(dev);
345 mutex_unlock(&dev->phy_mutex);
346
347 netdev_dbg(dev->net,
348 "%s : phy_id=0x%02x, loc=0x%02x, returns=0x%04x\n", __func__,
349 phy_id, loc, le16_to_cpu(res));
350
351 return le16_to_cpu(res);
352 }
353
354 static void
355 sr_mdio_write(struct net_device *net, int phy_id, int loc, int val)
356 {
357 struct usbnet *dev = netdev_priv(net);
358 __le16 res = cpu_to_le16(val);
359
360 netdev_dbg(dev->net,
361 "%s : phy_id=0x%02x, loc=0x%02x, val=0x%04x\n", __func__,
362 phy_id, loc, val);
363 mutex_lock(&dev->phy_mutex);
364 sr_set_sw_mii(dev);
365 sr_write_cmd(dev, SR_CMD_WRITE_MII_REG, phy_id, (__u16)loc, 2, &res);
366 sr_set_hw_mii(dev);
367 mutex_unlock(&dev->phy_mutex);
368 }
369
370 /* Get the PHY Identifier from the PHYSID1 & PHYSID2 MII registers */
371 static u32 sr_get_phyid(struct usbnet *dev)
372 {
373 int phy_reg;
374 u32 phy_id;
375 int i;
376
377 /* Poll for the rare case the FW or phy isn't ready yet. */
378 for (i = 0; i < 100; i++) {
379 phy_reg = sr_mdio_read(dev->net, dev->mii.phy_id, MII_PHYSID1);
380 if (phy_reg != 0 && phy_reg != 0xFFFF)
381 break;
382 mdelay(1);
383 }
384
385 if (phy_reg <= 0 || phy_reg == 0xFFFF)
386 return 0;
387
388 phy_id = (phy_reg & 0xffff) << 16;
389
390 phy_reg = sr_mdio_read(dev->net, dev->mii.phy_id, MII_PHYSID2);
391 if (phy_reg < 0)
392 return 0;
393
394 phy_id |= (phy_reg & 0xffff);
395
396 return phy_id;
397 }
398
399 static void
400 sr_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
401 {
402 struct usbnet *dev = netdev_priv(net);
403 u8 opt;
404
405 if (sr_read_cmd(dev, SR_CMD_READ_MONITOR_MODE, 0, 0, 1, &opt) < 0) {
406 wolinfo->supported = 0;
407 wolinfo->wolopts = 0;
408 return;
409 }
410 wolinfo->supported = WAKE_PHY | WAKE_MAGIC;
411 wolinfo->wolopts = 0;
412 if (opt & SR_MONITOR_LINK)
413 wolinfo->wolopts |= WAKE_PHY;
414 if (opt & SR_MONITOR_MAGIC)
415 wolinfo->wolopts |= WAKE_MAGIC;
416 }
417
418 static int
419 sr_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
420 {
421 struct usbnet *dev = netdev_priv(net);
422 u8 opt = 0;
423
424 if (wolinfo->wolopts & ~(WAKE_PHY | WAKE_MAGIC))
425 return -EINVAL;
426
427 if (wolinfo->wolopts & WAKE_PHY)
428 opt |= SR_MONITOR_LINK;
429 if (wolinfo->wolopts & WAKE_MAGIC)
430 opt |= SR_MONITOR_MAGIC;
431
432 if (sr_write_cmd(dev, SR_CMD_WRITE_MONITOR_MODE,
433 opt, 0, 0, NULL) < 0)
434 return -EINVAL;
435
436 return 0;
437 }
438
439 static int sr_get_eeprom_len(struct net_device *net)
440 {
441 struct usbnet *dev = netdev_priv(net);
442 struct sr_data *data = (struct sr_data *)&dev->data;
443
444 return data->eeprom_len;
445 }
446
447 static int sr_get_eeprom(struct net_device *net,
448 struct ethtool_eeprom *eeprom, u8 *data)
449 {
450 struct usbnet *dev = netdev_priv(net);
451 __le16 *ebuf = (__le16 *)data;
452 int ret;
453 int i;
454
455 /* Crude hack to ensure that we don't overwrite memory
456 * if an odd length is supplied
457 */
458 if (eeprom->len % 2)
459 return -EINVAL;
460
461 eeprom->magic = SR_EEPROM_MAGIC;
462
463 /* sr9800 returns 2 bytes from eeprom on read */
464 for (i = 0; i < eeprom->len / 2; i++) {
465 ret = sr_read_cmd(dev, SR_CMD_READ_EEPROM, eeprom->offset + i,
466 0, 2, &ebuf[i]);
467 if (ret < 0)
468 return -EINVAL;
469 }
470 return 0;
471 }
472
473 static void sr_get_drvinfo(struct net_device *net,
474 struct ethtool_drvinfo *info)
475 {
476 /* Inherit standard device info */
477 usbnet_get_drvinfo(net, info);
478 strncpy(info->driver, DRIVER_NAME, sizeof(info->driver));
479 strncpy(info->version, DRIVER_VERSION, sizeof(info->version));
480 }
481
482 static u32 sr_get_link(struct net_device *net)
483 {
484 struct usbnet *dev = netdev_priv(net);
485
486 return mii_link_ok(&dev->mii);
487 }
488
489 static int sr_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
490 {
491 struct usbnet *dev = netdev_priv(net);
492
493 return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
494 }
495
496 static int sr_set_mac_address(struct net_device *net, void *p)
497 {
498 struct usbnet *dev = netdev_priv(net);
499 struct sr_data *data = (struct sr_data *)&dev->data;
500 struct sockaddr *addr = p;
501
502 if (netif_running(net))
503 return -EBUSY;
504 if (!is_valid_ether_addr(addr->sa_data))
505 return -EADDRNOTAVAIL;
506
507 memcpy(net->dev_addr, addr->sa_data, ETH_ALEN);
508
509 /* We use the 20 byte dev->data
510 * for our 6 byte mac buffer
511 * to avoid allocating memory that
512 * is tricky to free later
513 */
514 memcpy(data->mac_addr, addr->sa_data, ETH_ALEN);
515 sr_write_cmd_async(dev, SR_CMD_WRITE_NODE_ID, 0, 0, ETH_ALEN,
516 data->mac_addr);
517
518 return 0;
519 }
520
521 static const struct ethtool_ops sr9800_ethtool_ops = {
522 .get_drvinfo = sr_get_drvinfo,
523 .get_link = sr_get_link,
524 .get_msglevel = usbnet_get_msglevel,
525 .set_msglevel = usbnet_set_msglevel,
526 .get_wol = sr_get_wol,
527 .set_wol = sr_set_wol,
528 .get_eeprom_len = sr_get_eeprom_len,
529 .get_eeprom = sr_get_eeprom,
530 .nway_reset = usbnet_nway_reset,
531 .get_link_ksettings = usbnet_get_link_ksettings,
532 .set_link_ksettings = usbnet_set_link_ksettings,
533 };
534
535 static int sr9800_link_reset(struct usbnet *dev)
536 {
537 struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET };
538 u16 mode;
539
540 mii_check_media(&dev->mii, 1, 1);
541 mii_ethtool_gset(&dev->mii, &ecmd);
542 mode = SR9800_MEDIUM_DEFAULT;
543
544 if (ethtool_cmd_speed(&ecmd) != SPEED_100)
545 mode &= ~SR_MEDIUM_PS;
546
547 if (ecmd.duplex != DUPLEX_FULL)
548 mode &= ~SR_MEDIUM_FD;
549
550 netdev_dbg(dev->net, "%s : speed: %u duplex: %d mode: 0x%04x\n",
551 __func__, ethtool_cmd_speed(&ecmd), ecmd.duplex, mode);
552
553 sr_write_medium_mode(dev, mode);
554
555 return 0;
556 }
557
558
559 static int sr9800_set_default_mode(struct usbnet *dev)
560 {
561 u16 rx_ctl;
562 int ret;
563
564 sr_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET);
565 sr_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
566 ADVERTISE_ALL | ADVERTISE_CSMA);
567 mii_nway_restart(&dev->mii);
568
569 ret = sr_write_medium_mode(dev, SR9800_MEDIUM_DEFAULT);
570 if (ret < 0)
571 goto out;
572
573 ret = sr_write_cmd(dev, SR_CMD_WRITE_IPG012,
574 SR9800_IPG0_DEFAULT | SR9800_IPG1_DEFAULT,
575 SR9800_IPG2_DEFAULT, 0, NULL);
576 if (ret < 0) {
577 netdev_dbg(dev->net, "Write IPG,IPG1,IPG2 failed: %d\n", ret);
578 goto out;
579 }
580
581 /* Set RX_CTL to default values with 2k buffer, and enable cactus */
582 ret = sr_write_rx_ctl(dev, SR_DEFAULT_RX_CTL);
583 if (ret < 0)
584 goto out;
585
586 rx_ctl = sr_read_rx_ctl(dev);
587 netdev_dbg(dev->net, "RX_CTL is 0x%04x after all initializations\n",
588 rx_ctl);
589
590 rx_ctl = sr_read_medium_status(dev);
591 netdev_dbg(dev->net, "Medium Status:0x%04x after all initializations\n",
592 rx_ctl);
593
594 return 0;
595 out:
596 return ret;
597 }
598
599 static int sr9800_reset(struct usbnet *dev)
600 {
601 struct sr_data *data = (struct sr_data *)&dev->data;
602 int ret, embd_phy;
603 u16 rx_ctl;
604
605 ret = sr_write_gpio(dev,
606 SR_GPIO_RSE | SR_GPIO_GPO_2 | SR_GPIO_GPO2EN, 5);
607 if (ret < 0)
608 goto out;
609
610 embd_phy = ((sr_get_phy_addr(dev) & 0x1f) == 0x10 ? 1 : 0);
611
612 ret = sr_write_cmd(dev, SR_CMD_SW_PHY_SELECT, embd_phy, 0, 0, NULL);
613 if (ret < 0) {
614 netdev_dbg(dev->net, "Select PHY #1 failed: %d\n", ret);
615 goto out;
616 }
617
618 ret = sr_sw_reset(dev, SR_SWRESET_IPPD | SR_SWRESET_PRL);
619 if (ret < 0)
620 goto out;
621
622 msleep(150);
623
624 ret = sr_sw_reset(dev, SR_SWRESET_CLEAR);
625 if (ret < 0)
626 goto out;
627
628 msleep(150);
629
630 if (embd_phy) {
631 ret = sr_sw_reset(dev, SR_SWRESET_IPRL);
632 if (ret < 0)
633 goto out;
634 } else {
635 ret = sr_sw_reset(dev, SR_SWRESET_PRTE);
636 if (ret < 0)
637 goto out;
638 }
639
640 msleep(150);
641 rx_ctl = sr_read_rx_ctl(dev);
642 netdev_dbg(dev->net, "RX_CTL is 0x%04x after software reset\n", rx_ctl);
643 ret = sr_write_rx_ctl(dev, 0x0000);
644 if (ret < 0)
645 goto out;
646
647 rx_ctl = sr_read_rx_ctl(dev);
648 netdev_dbg(dev->net, "RX_CTL is 0x%04x setting to 0x0000\n", rx_ctl);
649
650 ret = sr_sw_reset(dev, SR_SWRESET_PRL);
651 if (ret < 0)
652 goto out;
653
654 msleep(150);
655
656 ret = sr_sw_reset(dev, SR_SWRESET_IPRL | SR_SWRESET_PRL);
657 if (ret < 0)
658 goto out;
659
660 msleep(150);
661
662 ret = sr9800_set_default_mode(dev);
663 if (ret < 0)
664 goto out;
665
666 /* Rewrite MAC address */
667 memcpy(data->mac_addr, dev->net->dev_addr, ETH_ALEN);
668 ret = sr_write_cmd(dev, SR_CMD_WRITE_NODE_ID, 0, 0, ETH_ALEN,
669 data->mac_addr);
670 if (ret < 0)
671 goto out;
672
673 return 0;
674
675 out:
676 return ret;
677 }
678
679 static const struct net_device_ops sr9800_netdev_ops = {
680 .ndo_open = usbnet_open,
681 .ndo_stop = usbnet_stop,
682 .ndo_start_xmit = usbnet_start_xmit,
683 .ndo_tx_timeout = usbnet_tx_timeout,
684 .ndo_change_mtu = usbnet_change_mtu,
685 .ndo_get_stats64 = usbnet_get_stats64,
686 .ndo_set_mac_address = sr_set_mac_address,
687 .ndo_validate_addr = eth_validate_addr,
688 .ndo_do_ioctl = sr_ioctl,
689 .ndo_set_rx_mode = sr_set_multicast,
690 };
691
692 static int sr9800_phy_powerup(struct usbnet *dev)
693 {
694 int ret;
695
696 /* set the embedded Ethernet PHY in power-down state */
697 ret = sr_sw_reset(dev, SR_SWRESET_IPPD | SR_SWRESET_IPRL);
698 if (ret < 0) {
699 netdev_err(dev->net, "Failed to power down PHY : %d\n", ret);
700 return ret;
701 }
702 msleep(20);
703
704 /* set the embedded Ethernet PHY in power-up state */
705 ret = sr_sw_reset(dev, SR_SWRESET_IPRL);
706 if (ret < 0) {
707 netdev_err(dev->net, "Failed to reset PHY: %d\n", ret);
708 return ret;
709 }
710 msleep(600);
711
712 /* set the embedded Ethernet PHY in reset state */
713 ret = sr_sw_reset(dev, SR_SWRESET_CLEAR);
714 if (ret < 0) {
715 netdev_err(dev->net, "Failed to power up PHY: %d\n", ret);
716 return ret;
717 }
718 msleep(20);
719
720 /* set the embedded Ethernet PHY in power-up state */
721 ret = sr_sw_reset(dev, SR_SWRESET_IPRL);
722 if (ret < 0) {
723 netdev_err(dev->net, "Failed to reset PHY: %d\n", ret);
724 return ret;
725 }
726
727 return 0;
728 }
729
730 static int sr9800_bind(struct usbnet *dev, struct usb_interface *intf)
731 {
732 struct sr_data *data = (struct sr_data *)&dev->data;
733 u16 led01_mux, led23_mux;
734 int ret, embd_phy;
735 u32 phyid;
736 u16 rx_ctl;
737
738 data->eeprom_len = SR9800_EEPROM_LEN;
739
740 usbnet_get_endpoints(dev, intf);
741
742 /* LED Setting Rule :
743 * AABB:CCDD
744 * AA : MFA0(LED0)
745 * BB : MFA1(LED1)
746 * CC : MFA2(LED2), Reserved for SR9800
747 * DD : MFA3(LED3), Reserved for SR9800
748 */
749 led01_mux = (SR_LED_MUX_LINK_ACTIVE << 8) | SR_LED_MUX_LINK;
750 led23_mux = (SR_LED_MUX_LINK_ACTIVE << 8) | SR_LED_MUX_TX_ACTIVE;
751 ret = sr_write_cmd(dev, SR_CMD_LED_MUX, led01_mux, led23_mux, 0, NULL);
752 if (ret < 0) {
753 netdev_err(dev->net, "set LINK LED failed : %d\n", ret);
754 goto out;
755 }
756
757 /* Get the MAC address */
758 ret = sr_read_cmd(dev, SR_CMD_READ_NODE_ID, 0, 0, ETH_ALEN,
759 dev->net->dev_addr);
760 if (ret < 0) {
761 netdev_dbg(dev->net, "Failed to read MAC address: %d\n", ret);
762 return ret;
763 }
764 netdev_dbg(dev->net, "mac addr : %pM\n", dev->net->dev_addr);
765
766 /* Initialize MII structure */
767 dev->mii.dev = dev->net;
768 dev->mii.mdio_read = sr_mdio_read;
769 dev->mii.mdio_write = sr_mdio_write;
770 dev->mii.phy_id_mask = 0x1f;
771 dev->mii.reg_num_mask = 0x1f;
772 dev->mii.phy_id = sr_get_phy_addr(dev);
773
774 dev->net->netdev_ops = &sr9800_netdev_ops;
775 dev->net->ethtool_ops = &sr9800_ethtool_ops;
776
777 embd_phy = ((dev->mii.phy_id & 0x1f) == 0x10 ? 1 : 0);
778 /* Reset the PHY to normal operation mode */
779 ret = sr_write_cmd(dev, SR_CMD_SW_PHY_SELECT, embd_phy, 0, 0, NULL);
780 if (ret < 0) {
781 netdev_dbg(dev->net, "Select PHY #1 failed: %d\n", ret);
782 return ret;
783 }
784
785 /* Init PHY routine */
786 ret = sr9800_phy_powerup(dev);
787 if (ret < 0)
788 goto out;
789
790 rx_ctl = sr_read_rx_ctl(dev);
791 netdev_dbg(dev->net, "RX_CTL is 0x%04x after software reset\n", rx_ctl);
792 ret = sr_write_rx_ctl(dev, 0x0000);
793 if (ret < 0)
794 goto out;
795
796 rx_ctl = sr_read_rx_ctl(dev);
797 netdev_dbg(dev->net, "RX_CTL is 0x%04x setting to 0x0000\n", rx_ctl);
798
799 /* Read PHYID register *AFTER* the PHY was reset properly */
800 phyid = sr_get_phyid(dev);
801 netdev_dbg(dev->net, "PHYID=0x%08x\n", phyid);
802
803 /* medium mode setting */
804 ret = sr9800_set_default_mode(dev);
805 if (ret < 0)
806 goto out;
807
808 if (dev->udev->speed == USB_SPEED_HIGH) {
809 ret = sr_write_cmd(dev, SR_CMD_BULKIN_SIZE,
810 SR9800_BULKIN_SIZE[SR9800_MAX_BULKIN_4K].byte_cnt,
811 SR9800_BULKIN_SIZE[SR9800_MAX_BULKIN_4K].threshold,
812 0, NULL);
813 if (ret < 0) {
814 netdev_err(dev->net, "Reset RX_CTL failed: %d\n", ret);
815 goto out;
816 }
817 dev->rx_urb_size =
818 SR9800_BULKIN_SIZE[SR9800_MAX_BULKIN_4K].size;
819 } else {
820 ret = sr_write_cmd(dev, SR_CMD_BULKIN_SIZE,
821 SR9800_BULKIN_SIZE[SR9800_MAX_BULKIN_2K].byte_cnt,
822 SR9800_BULKIN_SIZE[SR9800_MAX_BULKIN_2K].threshold,
823 0, NULL);
824 if (ret < 0) {
825 netdev_err(dev->net, "Reset RX_CTL failed: %d\n", ret);
826 goto out;
827 }
828 dev->rx_urb_size =
829 SR9800_BULKIN_SIZE[SR9800_MAX_BULKIN_2K].size;
830 }
831 netdev_dbg(dev->net, "%s : setting rx_urb_size with : %zu\n", __func__,
832 dev->rx_urb_size);
833 return 0;
834
835 out:
836 return ret;
837 }
838
839 static const struct driver_info sr9800_driver_info = {
840 .description = "CoreChip SR9800 USB 2.0 Ethernet",
841 .bind = sr9800_bind,
842 .status = sr_status,
843 .link_reset = sr9800_link_reset,
844 .reset = sr9800_reset,
845 .flags = DRIVER_FLAG,
846 .rx_fixup = sr_rx_fixup,
847 .tx_fixup = sr_tx_fixup,
848 };
849
850 static const struct usb_device_id products[] = {
851 {
852 USB_DEVICE(0x0fe6, 0x9800), /* SR9800 Device */
853 .driver_info = (unsigned long) &sr9800_driver_info,
854 },
855 {}, /* END */
856 };
857
858 MODULE_DEVICE_TABLE(usb, products);
859
860 static struct usb_driver sr_driver = {
861 .name = DRIVER_NAME,
862 .id_table = products,
863 .probe = usbnet_probe,
864 .suspend = usbnet_suspend,
865 .resume = usbnet_resume,
866 .disconnect = usbnet_disconnect,
867 .supports_autosuspend = 1,
868 };
869
870 module_usb_driver(sr_driver);
871
872 MODULE_AUTHOR("Liu Junliang <liujunliang_ljl@163.com");
873 MODULE_VERSION(DRIVER_VERSION);
874 MODULE_DESCRIPTION("SR9800 USB 2.0 USB2NET Dev : http://www.corechip-sz.com");
875 MODULE_LICENSE("GPL");
Linux with added FPC-III support