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
 28static 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
 41static 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
 54static void
 55sr_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
 62static 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
110static 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	return skb;
148}
149
150static void sr_status(struct usbnet *dev, struct urb *urb)
151{
152	struct sr9800_int_data *event;
153	int link;
154
155	if (urb->actual_length < 8)
156		return;
157
158	event = urb->transfer_buffer;
159	link = event->link & 0x01;
160	if (netif_carrier_ok(dev->net) != link) {
161		usbnet_link_change(dev, link, 1);
162		netdev_dbg(dev->net, "Link Status is: %d\n", link);
163	}
164
165	return;
166}
167
168static inline int sr_set_sw_mii(struct usbnet *dev)
169{
170	int ret;
171
172	ret = sr_write_cmd(dev, SR_CMD_SET_SW_MII, 0x0000, 0, 0, NULL);
173	if (ret < 0)
174		netdev_err(dev->net, "Failed to enable software MII access\n");
175	return ret;
176}
177
178static inline int sr_set_hw_mii(struct usbnet *dev)
179{
180	int ret;
181
182	ret = sr_write_cmd(dev, SR_CMD_SET_HW_MII, 0x0000, 0, 0, NULL);
183	if (ret < 0)
184		netdev_err(dev->net, "Failed to enable hardware MII access\n");
185	return ret;
186}
187
188static inline int sr_get_phy_addr(struct usbnet *dev)
189{
190	u8 buf[2];
191	int ret;
192
193	ret = sr_read_cmd(dev, SR_CMD_READ_PHY_ID, 0, 0, 2, buf);
194	if (ret < 0) {
195		netdev_err(dev->net, "%s : Error reading PHYID register:%02x\n",
196			   __func__, ret);
197		goto out;
198	}
199	netdev_dbg(dev->net, "%s : returning 0x%04x\n", __func__,
200		   *((__le16 *)buf));
201
202	ret = buf[1];
203
204out:
205	return ret;
206}
207
208static int sr_sw_reset(struct usbnet *dev, u8 flags)
209{
210	int ret;
211
212	ret = sr_write_cmd(dev, SR_CMD_SW_RESET, flags, 0, 0, NULL);
213	if (ret < 0)
214		netdev_err(dev->net, "Failed to send software reset:%02x\n",
215			   ret);
216
217	return ret;
218}
219
220static u16 sr_read_rx_ctl(struct usbnet *dev)
221{
222	__le16 v;
223	int ret;
224
225	ret = sr_read_cmd(dev, SR_CMD_READ_RX_CTL, 0, 0, 2, &v);
226	if (ret < 0) {
227		netdev_err(dev->net, "Error reading RX_CTL register:%02x\n",
228			   ret);
229		goto out;
230	}
231
232	ret = le16_to_cpu(v);
233out:
234	return ret;
235}
236
237static int sr_write_rx_ctl(struct usbnet *dev, u16 mode)
238{
239	int ret;
240
241	netdev_dbg(dev->net, "%s : mode = 0x%04x\n", __func__, mode);
242	ret = sr_write_cmd(dev, SR_CMD_WRITE_RX_CTL, mode, 0, 0, NULL);
243	if (ret < 0)
244		netdev_err(dev->net,
245			   "Failed to write RX_CTL mode to 0x%04x:%02x\n",
246			   mode, ret);
247
248	return ret;
249}
250
251static u16 sr_read_medium_status(struct usbnet *dev)
252{
253	__le16 v;
254	int ret;
255
256	ret = sr_read_cmd(dev, SR_CMD_READ_MEDIUM_STATUS, 0, 0, 2, &v);
257	if (ret < 0) {
258		netdev_err(dev->net,
259			   "Error reading Medium Status register:%02x\n", ret);
260		return ret;	/* TODO: callers not checking for error ret */
261	}
262
263	return le16_to_cpu(v);
264}
265
266static int sr_write_medium_mode(struct usbnet *dev, u16 mode)
267{
268	int ret;
269
270	netdev_dbg(dev->net, "%s : mode = 0x%04x\n", __func__, mode);
271	ret = sr_write_cmd(dev, SR_CMD_WRITE_MEDIUM_MODE, mode, 0, 0, NULL);
272	if (ret < 0)
273		netdev_err(dev->net,
274			   "Failed to write Medium Mode mode to 0x%04x:%02x\n",
275			   mode, ret);
276	return ret;
277}
278
279static int sr_write_gpio(struct usbnet *dev, u16 value, int sleep)
280{
281	int ret;
282
283	netdev_dbg(dev->net, "%s : value = 0x%04x\n", __func__, value);
284	ret = sr_write_cmd(dev, SR_CMD_WRITE_GPIOS, value, 0, 0, NULL);
285	if (ret < 0)
286		netdev_err(dev->net, "Failed to write GPIO value 0x%04x:%02x\n",
287			   value, ret);
288	if (sleep)
289		msleep(sleep);
290
291	return ret;
292}
293
294/* SR9800 have a 16-bit RX_CTL value */
295static void sr_set_multicast(struct net_device *net)
296{
297	struct usbnet *dev = netdev_priv(net);
298	struct sr_data *data = (struct sr_data *)&dev->data;
299	u16 rx_ctl = SR_DEFAULT_RX_CTL;
300
301	if (net->flags & IFF_PROMISC) {
302		rx_ctl |= SR_RX_CTL_PRO;
303	} else if (net->flags & IFF_ALLMULTI ||
304		   netdev_mc_count(net) > SR_MAX_MCAST) {
305		rx_ctl |= SR_RX_CTL_AMALL;
306	} else if (netdev_mc_empty(net)) {
307		/* just broadcast and directed */
308	} else {
309		/* We use the 20 byte dev->data
310		 * for our 8 byte filter buffer
311		 * to avoid allocating memory that
312		 * is tricky to free later
313		 */
314		struct netdev_hw_addr *ha;
315		u32 crc_bits;
316
317		memset(data->multi_filter, 0, SR_MCAST_FILTER_SIZE);
318
319		/* Build the multicast hash filter. */
320		netdev_for_each_mc_addr(ha, net) {
321			crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26;
322			data->multi_filter[crc_bits >> 3] |=
323			    1 << (crc_bits & 7);
324		}
325
326		sr_write_cmd_async(dev, SR_CMD_WRITE_MULTI_FILTER, 0, 0,
327				   SR_MCAST_FILTER_SIZE, data->multi_filter);
328
329		rx_ctl |= SR_RX_CTL_AM;
330	}
331
332	sr_write_cmd_async(dev, SR_CMD_WRITE_RX_CTL, rx_ctl, 0, 0, NULL);
333}
334
335static int sr_mdio_read(struct net_device *net, int phy_id, int loc)
336{
337	struct usbnet *dev = netdev_priv(net);
338	__le16 res;
339
340	mutex_lock(&dev->phy_mutex);
341	sr_set_sw_mii(dev);
342	sr_read_cmd(dev, SR_CMD_READ_MII_REG, phy_id, (__u16)loc, 2, &res);
343	sr_set_hw_mii(dev);
344	mutex_unlock(&dev->phy_mutex);
345
346	netdev_dbg(dev->net,
347		   "%s : phy_id=0x%02x, loc=0x%02x, returns=0x%04x\n", __func__,
348		   phy_id, loc, le16_to_cpu(res));
349
350	return le16_to_cpu(res);
351}
352
353static void
354sr_mdio_write(struct net_device *net, int phy_id, int loc, int val)
355{
356	struct usbnet *dev = netdev_priv(net);
357	__le16 res = cpu_to_le16(val);
358
359	netdev_dbg(dev->net,
360		   "%s : phy_id=0x%02x, loc=0x%02x, val=0x%04x\n", __func__,
361		   phy_id, loc, val);
362	mutex_lock(&dev->phy_mutex);
363	sr_set_sw_mii(dev);
364	sr_write_cmd(dev, SR_CMD_WRITE_MII_REG, phy_id, (__u16)loc, 2, &res);
365	sr_set_hw_mii(dev);
366	mutex_unlock(&dev->phy_mutex);
367}
368
369/* Get the PHY Identifier from the PHYSID1 & PHYSID2 MII registers */
370static u32 sr_get_phyid(struct usbnet *dev)
371{
372	int phy_reg;
373	u32 phy_id;
374	int i;
375
376	/* Poll for the rare case the FW or phy isn't ready yet.  */
377	for (i = 0; i < 100; i++) {
378		phy_reg = sr_mdio_read(dev->net, dev->mii.phy_id, MII_PHYSID1);
379		if (phy_reg != 0 && phy_reg != 0xFFFF)
380			break;
381		mdelay(1);
382	}
383
384	if (phy_reg <= 0 || phy_reg == 0xFFFF)
385		return 0;
386
387	phy_id = (phy_reg & 0xffff) << 16;
388
389	phy_reg = sr_mdio_read(dev->net, dev->mii.phy_id, MII_PHYSID2);
390	if (phy_reg < 0)
391		return 0;
392
393	phy_id |= (phy_reg & 0xffff);
394
395	return phy_id;
396}
397
398static void
399sr_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
400{
401	struct usbnet *dev = netdev_priv(net);
402	u8 opt;
403
404	if (sr_read_cmd(dev, SR_CMD_READ_MONITOR_MODE, 0, 0, 1, &opt) < 0) {
405		wolinfo->supported = 0;
406		wolinfo->wolopts = 0;
407		return;
408	}
409	wolinfo->supported = WAKE_PHY | WAKE_MAGIC;
410	wolinfo->wolopts = 0;
411	if (opt & SR_MONITOR_LINK)
412		wolinfo->wolopts |= WAKE_PHY;
413	if (opt & SR_MONITOR_MAGIC)
414		wolinfo->wolopts |= WAKE_MAGIC;
415}
416
417static int
418sr_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
419{
420	struct usbnet *dev = netdev_priv(net);
421	u8 opt = 0;
422
 
 
 
423	if (wolinfo->wolopts & WAKE_PHY)
424		opt |= SR_MONITOR_LINK;
425	if (wolinfo->wolopts & WAKE_MAGIC)
426		opt |= SR_MONITOR_MAGIC;
427
428	if (sr_write_cmd(dev, SR_CMD_WRITE_MONITOR_MODE,
429			 opt, 0, 0, NULL) < 0)
430		return -EINVAL;
431
432	return 0;
433}
434
435static int sr_get_eeprom_len(struct net_device *net)
436{
437	struct usbnet *dev = netdev_priv(net);
438	struct sr_data *data = (struct sr_data *)&dev->data;
439
440	return data->eeprom_len;
441}
442
443static int sr_get_eeprom(struct net_device *net,
444			      struct ethtool_eeprom *eeprom, u8 *data)
445{
446	struct usbnet *dev = netdev_priv(net);
447	__le16 *ebuf = (__le16 *)data;
448	int ret;
449	int i;
450
451	/* Crude hack to ensure that we don't overwrite memory
452	 * if an odd length is supplied
453	 */
454	if (eeprom->len % 2)
455		return -EINVAL;
456
457	eeprom->magic = SR_EEPROM_MAGIC;
458
459	/* sr9800 returns 2 bytes from eeprom on read */
460	for (i = 0; i < eeprom->len / 2; i++) {
461		ret = sr_read_cmd(dev, SR_CMD_READ_EEPROM, eeprom->offset + i,
462				  0, 2, &ebuf[i]);
463		if (ret < 0)
464			return -EINVAL;
465	}
466	return 0;
467}
468
469static void sr_get_drvinfo(struct net_device *net,
470				 struct ethtool_drvinfo *info)
471{
472	struct usbnet *dev = netdev_priv(net);
473	struct sr_data *data = (struct sr_data *)&dev->data;
474
475	/* Inherit standard device info */
476	usbnet_get_drvinfo(net, info);
477	strncpy(info->driver, DRIVER_NAME, sizeof(info->driver));
478	strncpy(info->version, DRIVER_VERSION, sizeof(info->version));
479	info->eedump_len = data->eeprom_len;
480}
481
482static 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
489static 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
496static 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
521static 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	.get_settings	= usbnet_get_settings,
531	.set_settings	= usbnet_set_settings,
532	.nway_reset	= usbnet_nway_reset,
 
 
533};
534
535static 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
559static 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;
595out:
596	return ret;
597}
598
599static 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
675out:
676	return ret;
677}
678
679static 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_set_mac_address	= sr_set_mac_address,
686	.ndo_validate_addr	= eth_validate_addr,
687	.ndo_do_ioctl		= sr_ioctl,
688	.ndo_set_rx_mode        = sr_set_multicast,
689};
690
691static int sr9800_phy_powerup(struct usbnet *dev)
692{
693	int ret;
694
695	/* set the embedded Ethernet PHY in power-down state */
696	ret = sr_sw_reset(dev, SR_SWRESET_IPPD | SR_SWRESET_IPRL);
697	if (ret < 0) {
698		netdev_err(dev->net, "Failed to power down PHY : %d\n", ret);
699		return ret;
700	}
701	msleep(20);
702
703	/* set the embedded Ethernet PHY in power-up state */
704	ret = sr_sw_reset(dev, SR_SWRESET_IPRL);
705	if (ret < 0) {
706		netdev_err(dev->net, "Failed to reset PHY: %d\n", ret);
707		return ret;
708	}
709	msleep(600);
710
711	/* set the embedded Ethernet PHY in reset state */
712	ret = sr_sw_reset(dev, SR_SWRESET_CLEAR);
713	if (ret < 0) {
714		netdev_err(dev->net, "Failed to power up PHY: %d\n", ret);
715		return ret;
716	}
717	msleep(20);
718
719	/* set the embedded Ethernet PHY in power-up state */
720	ret = sr_sw_reset(dev, SR_SWRESET_IPRL);
721	if (ret < 0) {
722		netdev_err(dev->net, "Failed to reset PHY: %d\n", ret);
723		return ret;
724	}
725
726	return 0;
727}
728
729static int sr9800_bind(struct usbnet *dev, struct usb_interface *intf)
730{
731	struct sr_data *data = (struct sr_data *)&dev->data;
732	u16 led01_mux, led23_mux;
733	int ret, embd_phy;
 
734	u32 phyid;
735	u16 rx_ctl;
736
737	data->eeprom_len = SR9800_EEPROM_LEN;
738
739	usbnet_get_endpoints(dev, intf);
740
741	/* LED Setting Rule :
742	 * AABB:CCDD
743	 * AA : MFA0(LED0)
744	 * BB : MFA1(LED1)
745	 * CC : MFA2(LED2), Reserved for SR9800
746	 * DD : MFA3(LED3), Reserved for SR9800
747	 */
748	led01_mux = (SR_LED_MUX_LINK_ACTIVE << 8) | SR_LED_MUX_LINK;
749	led23_mux = (SR_LED_MUX_LINK_ACTIVE << 8) | SR_LED_MUX_TX_ACTIVE;
750	ret = sr_write_cmd(dev, SR_CMD_LED_MUX, led01_mux, led23_mux, 0, NULL);
751	if (ret < 0) {
752			netdev_err(dev->net, "set LINK LED failed : %d\n", ret);
753			goto out;
754	}
755
756	/* Get the MAC address */
757	ret = sr_read_cmd(dev, SR_CMD_READ_NODE_ID, 0, 0, ETH_ALEN,
758			  dev->net->dev_addr);
759	if (ret < 0) {
760		netdev_dbg(dev->net, "Failed to read MAC address: %d\n", ret);
761		return ret;
762	}
 
763	netdev_dbg(dev->net, "mac addr : %pM\n", dev->net->dev_addr);
764
765	/* Initialize MII structure */
766	dev->mii.dev = dev->net;
767	dev->mii.mdio_read = sr_mdio_read;
768	dev->mii.mdio_write = sr_mdio_write;
769	dev->mii.phy_id_mask = 0x1f;
770	dev->mii.reg_num_mask = 0x1f;
771	dev->mii.phy_id = sr_get_phy_addr(dev);
772
773	dev->net->netdev_ops = &sr9800_netdev_ops;
774	dev->net->ethtool_ops = &sr9800_ethtool_ops;
775
776	embd_phy = ((dev->mii.phy_id & 0x1f) == 0x10 ? 1 : 0);
777	/* Reset the PHY to normal operation mode */
778	ret = sr_write_cmd(dev, SR_CMD_SW_PHY_SELECT, embd_phy, 0, 0, NULL);
779	if (ret < 0) {
780		netdev_dbg(dev->net, "Select PHY #1 failed: %d\n", ret);
781		return ret;
782	}
783
784	/* Init PHY routine */
785	ret = sr9800_phy_powerup(dev);
786	if (ret < 0)
787		goto out;
788
789	rx_ctl = sr_read_rx_ctl(dev);
790	netdev_dbg(dev->net, "RX_CTL is 0x%04x after software reset\n", rx_ctl);
791	ret = sr_write_rx_ctl(dev, 0x0000);
792	if (ret < 0)
793		goto out;
794
795	rx_ctl = sr_read_rx_ctl(dev);
796	netdev_dbg(dev->net, "RX_CTL is 0x%04x setting to 0x0000\n", rx_ctl);
797
798	/* Read PHYID register *AFTER* the PHY was reset properly */
799	phyid = sr_get_phyid(dev);
800	netdev_dbg(dev->net, "PHYID=0x%08x\n", phyid);
801
802	/* medium mode setting */
803	ret = sr9800_set_default_mode(dev);
804	if (ret < 0)
805		goto out;
806
807	if (dev->udev->speed == USB_SPEED_HIGH) {
808		ret = sr_write_cmd(dev, SR_CMD_BULKIN_SIZE,
809			SR9800_BULKIN_SIZE[SR9800_MAX_BULKIN_4K].byte_cnt,
810			SR9800_BULKIN_SIZE[SR9800_MAX_BULKIN_4K].threshold,
811			0, NULL);
812		if (ret < 0) {
813			netdev_err(dev->net, "Reset RX_CTL failed: %d\n", ret);
814			goto out;
815		}
816		dev->rx_urb_size =
817			SR9800_BULKIN_SIZE[SR9800_MAX_BULKIN_4K].size;
818	} else {
819		ret = sr_write_cmd(dev, SR_CMD_BULKIN_SIZE,
820			SR9800_BULKIN_SIZE[SR9800_MAX_BULKIN_2K].byte_cnt,
821			SR9800_BULKIN_SIZE[SR9800_MAX_BULKIN_2K].threshold,
822			0, NULL);
823		if (ret < 0) {
824			netdev_err(dev->net, "Reset RX_CTL failed: %d\n", ret);
825			goto out;
826		}
827		dev->rx_urb_size =
828			SR9800_BULKIN_SIZE[SR9800_MAX_BULKIN_2K].size;
829	}
830	netdev_dbg(dev->net, "%s : setting rx_urb_size with : %zu\n", __func__,
831		   dev->rx_urb_size);
832	return 0;
833
834out:
835	return ret;
836}
837
838static const struct driver_info sr9800_driver_info = {
839	.description	= "CoreChip SR9800 USB 2.0 Ethernet",
840	.bind		= sr9800_bind,
841	.status		= sr_status,
842	.link_reset	= sr9800_link_reset,
843	.reset		= sr9800_reset,
844	.flags		= DRIVER_FLAG,
845	.rx_fixup	= sr_rx_fixup,
846	.tx_fixup	= sr_tx_fixup,
847};
848
849static const struct usb_device_id	products[] = {
850	{
851		USB_DEVICE(0x0fe6, 0x9800),	/* SR9800 Device  */
852		.driver_info = (unsigned long) &sr9800_driver_info,
853	},
854	{},		/* END */
855};
856
857MODULE_DEVICE_TABLE(usb, products);
858
859static struct usb_driver sr_driver = {
860	.name		= DRIVER_NAME,
861	.id_table	= products,
862	.probe		= usbnet_probe,
863	.suspend	= usbnet_suspend,
864	.resume		= usbnet_resume,
865	.disconnect	= usbnet_disconnect,
866	.supports_autosuspend = 1,
867};
868
869module_usb_driver(sr_driver);
870
871MODULE_AUTHOR("Liu Junliang <liujunliang_ljl@163.com");
872MODULE_VERSION(DRIVER_VERSION);
873MODULE_DESCRIPTION("SR9800 USB 2.0 USB2NET Dev : http://www.corechip-sz.com");
874MODULE_LICENSE("GPL");