xref: /linux/drivers/net/usb/ax88179_178a.c (revision 55d0969c451159cff86949b38c39171cab962069)
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  * ASIX AX88179/178A USB 3.0/2.0 to Gigabit Ethernet Devices
4  *
5  * Copyright (C) 2011-2013 ASIX
6  */
7 
8 #include <linux/module.h>
9 #include <linux/etherdevice.h>
10 #include <linux/mii.h>
11 #include <linux/usb.h>
12 #include <linux/crc32.h>
13 #include <linux/usb/usbnet.h>
14 #include <uapi/linux/mdio.h>
15 #include <linux/mdio.h>
16 
17 #define AX88179_PHY_ID				0x03
18 #define AX_EEPROM_LEN				0x100
19 #define AX88179_EEPROM_MAGIC			0x17900b95
20 #define AX_MCAST_FLTSIZE			8
21 #define AX_MAX_MCAST				64
22 #define AX_INT_PPLS_LINK			((u32)BIT(16))
23 #define AX_RXHDR_L4_TYPE_MASK			0x1c
24 #define AX_RXHDR_L4_TYPE_UDP			4
25 #define AX_RXHDR_L4_TYPE_TCP			16
26 #define AX_RXHDR_L3CSUM_ERR			2
27 #define AX_RXHDR_L4CSUM_ERR			1
28 #define AX_RXHDR_CRC_ERR			((u32)BIT(29))
29 #define AX_RXHDR_DROP_ERR			((u32)BIT(31))
30 #define AX_ACCESS_MAC				0x01
31 #define AX_ACCESS_PHY				0x02
32 #define AX_ACCESS_EEPROM			0x04
33 #define AX_ACCESS_EFUS				0x05
34 #define AX_RELOAD_EEPROM_EFUSE			0x06
35 #define AX_PAUSE_WATERLVL_HIGH			0x54
36 #define AX_PAUSE_WATERLVL_LOW			0x55
37 
38 #define PHYSICAL_LINK_STATUS			0x02
39 	#define	AX_USB_SS		0x04
40 	#define	AX_USB_HS		0x02
41 
42 #define GENERAL_STATUS				0x03
43 /* Check AX88179 version. UA1:Bit2 = 0,  UA2:Bit2 = 1 */
44 	#define	AX_SECLD		0x04
45 
46 #define AX_SROM_ADDR				0x07
47 #define AX_SROM_CMD				0x0a
48 	#define EEP_RD			0x04
49 	#define EEP_BUSY		0x10
50 
51 #define AX_SROM_DATA_LOW			0x08
52 #define AX_SROM_DATA_HIGH			0x09
53 
54 #define AX_RX_CTL				0x0b
55 	#define AX_RX_CTL_DROPCRCERR	0x0100
56 	#define AX_RX_CTL_IPE		0x0200
57 	#define AX_RX_CTL_START		0x0080
58 	#define AX_RX_CTL_AP		0x0020
59 	#define AX_RX_CTL_AM		0x0010
60 	#define AX_RX_CTL_AB		0x0008
61 	#define AX_RX_CTL_AMALL		0x0002
62 	#define AX_RX_CTL_PRO		0x0001
63 	#define AX_RX_CTL_STOP		0x0000
64 
65 #define AX_NODE_ID				0x10
66 #define AX_MULFLTARY				0x16
67 
68 #define AX_MEDIUM_STATUS_MODE			0x22
69 	#define AX_MEDIUM_GIGAMODE	0x01
70 	#define AX_MEDIUM_FULL_DUPLEX	0x02
71 	#define AX_MEDIUM_EN_125MHZ	0x08
72 	#define AX_MEDIUM_RXFLOW_CTRLEN	0x10
73 	#define AX_MEDIUM_TXFLOW_CTRLEN	0x20
74 	#define AX_MEDIUM_RECEIVE_EN	0x100
75 	#define AX_MEDIUM_PS		0x200
76 	#define AX_MEDIUM_JUMBO_EN	0x8040
77 
78 #define AX_MONITOR_MOD				0x24
79 	#define AX_MONITOR_MODE_RWLC	0x02
80 	#define AX_MONITOR_MODE_RWMP	0x04
81 	#define AX_MONITOR_MODE_PMEPOL	0x20
82 	#define AX_MONITOR_MODE_PMETYPE	0x40
83 
84 #define AX_GPIO_CTRL				0x25
85 	#define AX_GPIO_CTRL_GPIO3EN	0x80
86 	#define AX_GPIO_CTRL_GPIO2EN	0x40
87 	#define AX_GPIO_CTRL_GPIO1EN	0x20
88 
89 #define AX_PHYPWR_RSTCTL			0x26
90 	#define AX_PHYPWR_RSTCTL_BZ	0x0010
91 	#define AX_PHYPWR_RSTCTL_IPRL	0x0020
92 	#define AX_PHYPWR_RSTCTL_AT	0x1000
93 
94 #define AX_RX_BULKIN_QCTRL			0x2e
95 #define AX_CLK_SELECT				0x33
96 	#define AX_CLK_SELECT_BCS	0x01
97 	#define AX_CLK_SELECT_ACS	0x02
98 	#define AX_CLK_SELECT_ULR	0x08
99 
100 #define AX_RXCOE_CTL				0x34
101 	#define AX_RXCOE_IP		0x01
102 	#define AX_RXCOE_TCP		0x02
103 	#define AX_RXCOE_UDP		0x04
104 	#define AX_RXCOE_TCPV6		0x20
105 	#define AX_RXCOE_UDPV6		0x40
106 
107 #define AX_TXCOE_CTL				0x35
108 	#define AX_TXCOE_IP		0x01
109 	#define AX_TXCOE_TCP		0x02
110 	#define AX_TXCOE_UDP		0x04
111 	#define AX_TXCOE_TCPV6		0x20
112 	#define AX_TXCOE_UDPV6		0x40
113 
114 #define AX_LEDCTRL				0x73
115 
116 #define GMII_PHY_PHYSR				0x11
117 	#define GMII_PHY_PHYSR_SMASK	0xc000
118 	#define GMII_PHY_PHYSR_GIGA	0x8000
119 	#define GMII_PHY_PHYSR_100	0x4000
120 	#define GMII_PHY_PHYSR_FULL	0x2000
121 	#define GMII_PHY_PHYSR_LINK	0x400
122 
123 #define GMII_LED_ACT				0x1a
124 	#define	GMII_LED_ACTIVE_MASK	0xff8f
125 	#define	GMII_LED0_ACTIVE	BIT(4)
126 	#define	GMII_LED1_ACTIVE	BIT(5)
127 	#define	GMII_LED2_ACTIVE	BIT(6)
128 
129 #define GMII_LED_LINK				0x1c
130 	#define	GMII_LED_LINK_MASK	0xf888
131 	#define	GMII_LED0_LINK_10	BIT(0)
132 	#define	GMII_LED0_LINK_100	BIT(1)
133 	#define	GMII_LED0_LINK_1000	BIT(2)
134 	#define	GMII_LED1_LINK_10	BIT(4)
135 	#define	GMII_LED1_LINK_100	BIT(5)
136 	#define	GMII_LED1_LINK_1000	BIT(6)
137 	#define	GMII_LED2_LINK_10	BIT(8)
138 	#define	GMII_LED2_LINK_100	BIT(9)
139 	#define	GMII_LED2_LINK_1000	BIT(10)
140 	#define	LED0_ACTIVE		BIT(0)
141 	#define	LED0_LINK_10		BIT(1)
142 	#define	LED0_LINK_100		BIT(2)
143 	#define	LED0_LINK_1000		BIT(3)
144 	#define	LED0_FD			BIT(4)
145 	#define	LED0_USB3_MASK		0x001f
146 	#define	LED1_ACTIVE		BIT(5)
147 	#define	LED1_LINK_10		BIT(6)
148 	#define	LED1_LINK_100		BIT(7)
149 	#define	LED1_LINK_1000		BIT(8)
150 	#define	LED1_FD			BIT(9)
151 	#define	LED1_USB3_MASK		0x03e0
152 	#define	LED2_ACTIVE		BIT(10)
153 	#define	LED2_LINK_1000		BIT(13)
154 	#define	LED2_LINK_100		BIT(12)
155 	#define	LED2_LINK_10		BIT(11)
156 	#define	LED2_FD			BIT(14)
157 	#define	LED_VALID		BIT(15)
158 	#define	LED2_USB3_MASK		0x7c00
159 
160 #define GMII_PHYPAGE				0x1e
161 #define GMII_PHY_PAGE_SELECT			0x1f
162 	#define GMII_PHY_PGSEL_EXT	0x0007
163 	#define GMII_PHY_PGSEL_PAGE0	0x0000
164 	#define GMII_PHY_PGSEL_PAGE3	0x0003
165 	#define GMII_PHY_PGSEL_PAGE5	0x0005
166 
167 static int ax88179_reset(struct usbnet *dev);
168 
169 struct ax88179_data {
170 	u8  eee_enabled;
171 	u8  eee_active;
172 	u16 rxctl;
173 	u8 in_pm;
174 	u32 wol_supported;
175 	u32 wolopts;
176 	u8 disconnecting;
177 };
178 
179 struct ax88179_int_data {
180 	__le32 intdata1;
181 	__le32 intdata2;
182 };
183 
184 static const struct {
185 	unsigned char ctrl, timer_l, timer_h, size, ifg;
186 } AX88179_BULKIN_SIZE[] =	{
187 	{7, 0x4f, 0,	0x12, 0xff},
188 	{7, 0x20, 3,	0x16, 0xff},
189 	{7, 0xae, 7,	0x18, 0xff},
190 	{7, 0xcc, 0x4c, 0x18, 8},
191 };
192 
193 static void ax88179_set_pm_mode(struct usbnet *dev, bool pm_mode)
194 {
195 	struct ax88179_data *ax179_data = dev->driver_priv;
196 
197 	ax179_data->in_pm = pm_mode;
198 }
199 
200 static int ax88179_in_pm(struct usbnet *dev)
201 {
202 	struct ax88179_data *ax179_data = dev->driver_priv;
203 
204 	return ax179_data->in_pm;
205 }
206 
207 static int __ax88179_read_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
208 			      u16 size, void *data)
209 {
210 	int ret;
211 	int (*fn)(struct usbnet *, u8, u8, u16, u16, void *, u16);
212 	struct ax88179_data *ax179_data = dev->driver_priv;
213 
214 	BUG_ON(!dev);
215 
216 	if (!ax88179_in_pm(dev))
217 		fn = usbnet_read_cmd;
218 	else
219 		fn = usbnet_read_cmd_nopm;
220 
221 	ret = fn(dev, cmd, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
222 		 value, index, data, size);
223 
224 	if (unlikely((ret < 0) && !(ret == -ENODEV && ax179_data->disconnecting)))
225 		netdev_warn(dev->net, "Failed to read reg index 0x%04x: %d\n",
226 			    index, ret);
227 
228 	return ret;
229 }
230 
231 static int __ax88179_write_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
232 			       u16 size, const void *data)
233 {
234 	int ret;
235 	int (*fn)(struct usbnet *, u8, u8, u16, u16, const void *, u16);
236 	struct ax88179_data *ax179_data = dev->driver_priv;
237 
238 	BUG_ON(!dev);
239 
240 	if (!ax88179_in_pm(dev))
241 		fn = usbnet_write_cmd;
242 	else
243 		fn = usbnet_write_cmd_nopm;
244 
245 	ret = fn(dev, cmd, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
246 		 value, index, data, size);
247 
248 	if (unlikely((ret < 0) && !(ret == -ENODEV && ax179_data->disconnecting)))
249 		netdev_warn(dev->net, "Failed to write reg index 0x%04x: %d\n",
250 			    index, ret);
251 
252 	return ret;
253 }
254 
255 static void ax88179_write_cmd_async(struct usbnet *dev, u8 cmd, u16 value,
256 				    u16 index, u16 size, void *data)
257 {
258 	u16 buf;
259 
260 	if (2 == size) {
261 		buf = *((u16 *)data);
262 		cpu_to_le16s(&buf);
263 		usbnet_write_cmd_async(dev, cmd, USB_DIR_OUT | USB_TYPE_VENDOR |
264 				       USB_RECIP_DEVICE, value, index, &buf,
265 				       size);
266 	} else {
267 		usbnet_write_cmd_async(dev, cmd, USB_DIR_OUT | USB_TYPE_VENDOR |
268 				       USB_RECIP_DEVICE, value, index, data,
269 				       size);
270 	}
271 }
272 
273 static int ax88179_read_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
274 			    u16 size, void *data)
275 {
276 	int ret;
277 
278 	if (2 == size) {
279 		u16 buf = 0;
280 		ret = __ax88179_read_cmd(dev, cmd, value, index, size, &buf);
281 		le16_to_cpus(&buf);
282 		*((u16 *)data) = buf;
283 	} else if (4 == size) {
284 		u32 buf = 0;
285 		ret = __ax88179_read_cmd(dev, cmd, value, index, size, &buf);
286 		le32_to_cpus(&buf);
287 		*((u32 *)data) = buf;
288 	} else {
289 		ret = __ax88179_read_cmd(dev, cmd, value, index, size, data);
290 	}
291 
292 	return ret;
293 }
294 
295 static int ax88179_write_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
296 			     u16 size, const void *data)
297 {
298 	int ret;
299 
300 	if (2 == size) {
301 		u16 buf;
302 		buf = *((u16 *)data);
303 		cpu_to_le16s(&buf);
304 		ret = __ax88179_write_cmd(dev, cmd, value, index,
305 					  size, &buf);
306 	} else {
307 		ret = __ax88179_write_cmd(dev, cmd, value, index,
308 					  size, data);
309 	}
310 
311 	return ret;
312 }
313 
314 static void ax88179_status(struct usbnet *dev, struct urb *urb)
315 {
316 	struct ax88179_int_data *event;
317 	u32 link;
318 
319 	if (urb->actual_length < 8)
320 		return;
321 
322 	event = urb->transfer_buffer;
323 	le32_to_cpus((void *)&event->intdata1);
324 
325 	link = (((__force u32)event->intdata1) & AX_INT_PPLS_LINK) >> 16;
326 
327 	if (netif_carrier_ok(dev->net) != link) {
328 		usbnet_link_change(dev, link, 1);
329 		if (!link)
330 			netdev_info(dev->net, "ax88179 - Link status is: 0\n");
331 	}
332 }
333 
334 static int ax88179_mdio_read(struct net_device *netdev, int phy_id, int loc)
335 {
336 	struct usbnet *dev = netdev_priv(netdev);
337 	u16 res;
338 
339 	ax88179_read_cmd(dev, AX_ACCESS_PHY, phy_id, (__u16)loc, 2, &res);
340 	return res;
341 }
342 
343 static void ax88179_mdio_write(struct net_device *netdev, int phy_id, int loc,
344 			       int val)
345 {
346 	struct usbnet *dev = netdev_priv(netdev);
347 	u16 res = (u16) val;
348 
349 	ax88179_write_cmd(dev, AX_ACCESS_PHY, phy_id, (__u16)loc, 2, &res);
350 }
351 
352 static inline int ax88179_phy_mmd_indirect(struct usbnet *dev, u16 prtad,
353 					   u16 devad)
354 {
355 	u16 tmp16;
356 	int ret;
357 
358 	tmp16 = devad;
359 	ret = ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
360 				MII_MMD_CTRL, 2, &tmp16);
361 
362 	tmp16 = prtad;
363 	ret = ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
364 				MII_MMD_DATA, 2, &tmp16);
365 
366 	tmp16 = devad | MII_MMD_CTRL_NOINCR;
367 	ret = ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
368 				MII_MMD_CTRL, 2, &tmp16);
369 
370 	return ret;
371 }
372 
373 static int
374 ax88179_phy_read_mmd_indirect(struct usbnet *dev, u16 prtad, u16 devad)
375 {
376 	int ret;
377 	u16 tmp16;
378 
379 	ax88179_phy_mmd_indirect(dev, prtad, devad);
380 
381 	ret = ax88179_read_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
382 			       MII_MMD_DATA, 2, &tmp16);
383 	if (ret < 0)
384 		return ret;
385 
386 	return tmp16;
387 }
388 
389 static int
390 ax88179_phy_write_mmd_indirect(struct usbnet *dev, u16 prtad, u16 devad,
391 			       u16 data)
392 {
393 	int ret;
394 
395 	ax88179_phy_mmd_indirect(dev, prtad, devad);
396 
397 	ret = ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
398 				MII_MMD_DATA, 2, &data);
399 
400 	if (ret < 0)
401 		return ret;
402 
403 	return 0;
404 }
405 
406 static int ax88179_suspend(struct usb_interface *intf, pm_message_t message)
407 {
408 	struct usbnet *dev = usb_get_intfdata(intf);
409 	struct ax88179_data *priv = dev->driver_priv;
410 	u16 tmp16;
411 	u8 tmp8;
412 
413 	ax88179_set_pm_mode(dev, true);
414 
415 	usbnet_suspend(intf, message);
416 
417 	/* Enable WoL */
418 	if (priv->wolopts) {
419 		ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_MONITOR_MOD,
420 				 1, 1, &tmp8);
421 		if (priv->wolopts & WAKE_PHY)
422 			tmp8 |= AX_MONITOR_MODE_RWLC;
423 		if (priv->wolopts & WAKE_MAGIC)
424 			tmp8 |= AX_MONITOR_MODE_RWMP;
425 
426 		ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_MONITOR_MOD,
427 				  1, 1, &tmp8);
428 	}
429 
430 	/* Disable RX path */
431 	ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
432 			 2, 2, &tmp16);
433 	tmp16 &= ~AX_MEDIUM_RECEIVE_EN;
434 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
435 			  2, 2, &tmp16);
436 
437 	/* Force bulk-in zero length */
438 	ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL,
439 			 2, 2, &tmp16);
440 
441 	tmp16 |= AX_PHYPWR_RSTCTL_BZ | AX_PHYPWR_RSTCTL_IPRL;
442 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL,
443 			  2, 2, &tmp16);
444 
445 	/* change clock */
446 	tmp8 = 0;
447 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_CLK_SELECT, 1, 1, &tmp8);
448 
449 	/* Configure RX control register => stop operation */
450 	tmp16 = AX_RX_CTL_STOP;
451 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RX_CTL, 2, 2, &tmp16);
452 
453 	ax88179_set_pm_mode(dev, false);
454 
455 	return 0;
456 }
457 
458 /* This function is used to enable the autodetach function. */
459 /* This function is determined by offset 0x43 of EEPROM */
460 static int ax88179_auto_detach(struct usbnet *dev)
461 {
462 	u16 tmp16;
463 	u8 tmp8;
464 
465 	if (ax88179_read_cmd(dev, AX_ACCESS_EEPROM, 0x43, 1, 2, &tmp16) < 0)
466 		return 0;
467 
468 	if ((tmp16 == 0xFFFF) || (!(tmp16 & 0x0100)))
469 		return 0;
470 
471 	/* Enable Auto Detach bit */
472 	tmp8 = 0;
473 	ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_CLK_SELECT, 1, 1, &tmp8);
474 	tmp8 |= AX_CLK_SELECT_ULR;
475 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_CLK_SELECT, 1, 1, &tmp8);
476 
477 	ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL, 2, 2, &tmp16);
478 	tmp16 |= AX_PHYPWR_RSTCTL_AT;
479 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL, 2, 2, &tmp16);
480 
481 	return 0;
482 }
483 
484 static int ax88179_resume(struct usb_interface *intf)
485 {
486 	struct usbnet *dev = usb_get_intfdata(intf);
487 
488 	ax88179_set_pm_mode(dev, true);
489 
490 	usbnet_link_change(dev, 0, 0);
491 
492 	ax88179_reset(dev);
493 
494 	ax88179_set_pm_mode(dev, false);
495 
496 	return usbnet_resume(intf);
497 }
498 
499 static void ax88179_disconnect(struct usb_interface *intf)
500 {
501 	struct usbnet *dev = usb_get_intfdata(intf);
502 	struct ax88179_data *ax179_data;
503 
504 	if (!dev)
505 		return;
506 
507 	ax179_data = dev->driver_priv;
508 	ax179_data->disconnecting = 1;
509 
510 	usbnet_disconnect(intf);
511 }
512 
513 static void
514 ax88179_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
515 {
516 	struct usbnet *dev = netdev_priv(net);
517 	struct ax88179_data *priv = dev->driver_priv;
518 
519 	wolinfo->supported = priv->wol_supported;
520 	wolinfo->wolopts = priv->wolopts;
521 }
522 
523 static int
524 ax88179_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
525 {
526 	struct usbnet *dev = netdev_priv(net);
527 	struct ax88179_data *priv = dev->driver_priv;
528 
529 	if (wolinfo->wolopts & ~(priv->wol_supported))
530 		return -EINVAL;
531 
532 	priv->wolopts = wolinfo->wolopts;
533 
534 	return 0;
535 }
536 
537 static int ax88179_get_eeprom_len(struct net_device *net)
538 {
539 	return AX_EEPROM_LEN;
540 }
541 
542 static int
543 ax88179_get_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom,
544 		   u8 *data)
545 {
546 	struct usbnet *dev = netdev_priv(net);
547 	u16 *eeprom_buff;
548 	int first_word, last_word;
549 	int i, ret;
550 
551 	if (eeprom->len == 0)
552 		return -EINVAL;
553 
554 	eeprom->magic = AX88179_EEPROM_MAGIC;
555 
556 	first_word = eeprom->offset >> 1;
557 	last_word = (eeprom->offset + eeprom->len - 1) >> 1;
558 	eeprom_buff = kmalloc_array(last_word - first_word + 1, sizeof(u16),
559 				    GFP_KERNEL);
560 	if (!eeprom_buff)
561 		return -ENOMEM;
562 
563 	/* ax88179/178A returns 2 bytes from eeprom on read */
564 	for (i = first_word; i <= last_word; i++) {
565 		ret = __ax88179_read_cmd(dev, AX_ACCESS_EEPROM, i, 1, 2,
566 					 &eeprom_buff[i - first_word]);
567 		if (ret < 0) {
568 			kfree(eeprom_buff);
569 			return -EIO;
570 		}
571 	}
572 
573 	memcpy(data, (u8 *)eeprom_buff + (eeprom->offset & 1), eeprom->len);
574 	kfree(eeprom_buff);
575 	return 0;
576 }
577 
578 static int
579 ax88179_set_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom,
580 		   u8 *data)
581 {
582 	struct usbnet *dev = netdev_priv(net);
583 	u16 *eeprom_buff;
584 	int first_word;
585 	int last_word;
586 	int ret;
587 	int i;
588 
589 	netdev_dbg(net, "write EEPROM len %d, offset %d, magic 0x%x\n",
590 		   eeprom->len, eeprom->offset, eeprom->magic);
591 
592 	if (eeprom->len == 0)
593 		return -EINVAL;
594 
595 	if (eeprom->magic != AX88179_EEPROM_MAGIC)
596 		return -EINVAL;
597 
598 	first_word = eeprom->offset >> 1;
599 	last_word = (eeprom->offset + eeprom->len - 1) >> 1;
600 
601 	eeprom_buff = kmalloc_array(last_word - first_word + 1, sizeof(u16),
602 				    GFP_KERNEL);
603 	if (!eeprom_buff)
604 		return -ENOMEM;
605 
606 	/* align data to 16 bit boundaries, read the missing data from
607 	   the EEPROM */
608 	if (eeprom->offset & 1) {
609 		ret = ax88179_read_cmd(dev, AX_ACCESS_EEPROM, first_word, 1, 2,
610 				       &eeprom_buff[0]);
611 		if (ret < 0) {
612 			netdev_err(net, "Failed to read EEPROM at offset 0x%02x.\n", first_word);
613 			goto free;
614 		}
615 	}
616 
617 	if ((eeprom->offset + eeprom->len) & 1) {
618 		ret = ax88179_read_cmd(dev, AX_ACCESS_EEPROM, last_word, 1, 2,
619 				       &eeprom_buff[last_word - first_word]);
620 		if (ret < 0) {
621 			netdev_err(net, "Failed to read EEPROM at offset 0x%02x.\n", last_word);
622 			goto free;
623 		}
624 	}
625 
626 	memcpy((u8 *)eeprom_buff + (eeprom->offset & 1), data, eeprom->len);
627 
628 	for (i = first_word; i <= last_word; i++) {
629 		netdev_dbg(net, "write to EEPROM at offset 0x%02x, data 0x%04x\n",
630 			   i, eeprom_buff[i - first_word]);
631 		ret = ax88179_write_cmd(dev, AX_ACCESS_EEPROM, i, 1, 2,
632 					&eeprom_buff[i - first_word]);
633 		if (ret < 0) {
634 			netdev_err(net, "Failed to write EEPROM at offset 0x%02x.\n", i);
635 			goto free;
636 		}
637 		msleep(20);
638 	}
639 
640 	/* reload EEPROM data */
641 	ret = ax88179_write_cmd(dev, AX_RELOAD_EEPROM_EFUSE, 0x0000, 0, 0, NULL);
642 	if (ret < 0) {
643 		netdev_err(net, "Failed to reload EEPROM data\n");
644 		goto free;
645 	}
646 
647 	ret = 0;
648 free:
649 	kfree(eeprom_buff);
650 	return ret;
651 }
652 
653 static int ax88179_get_link_ksettings(struct net_device *net,
654 				      struct ethtool_link_ksettings *cmd)
655 {
656 	struct usbnet *dev = netdev_priv(net);
657 
658 	mii_ethtool_get_link_ksettings(&dev->mii, cmd);
659 
660 	return 0;
661 }
662 
663 static int ax88179_set_link_ksettings(struct net_device *net,
664 				      const struct ethtool_link_ksettings *cmd)
665 {
666 	struct usbnet *dev = netdev_priv(net);
667 	return mii_ethtool_set_link_ksettings(&dev->mii, cmd);
668 }
669 
670 static int
671 ax88179_ethtool_get_eee(struct usbnet *dev, struct ethtool_keee *data)
672 {
673 	int val;
674 
675 	/* Get Supported EEE */
676 	val = ax88179_phy_read_mmd_indirect(dev, MDIO_PCS_EEE_ABLE,
677 					    MDIO_MMD_PCS);
678 	if (val < 0)
679 		return val;
680 	mii_eee_cap1_mod_linkmode_t(data->supported, val);
681 
682 	/* Get advertisement EEE */
683 	val = ax88179_phy_read_mmd_indirect(dev, MDIO_AN_EEE_ADV,
684 					    MDIO_MMD_AN);
685 	if (val < 0)
686 		return val;
687 	mii_eee_cap1_mod_linkmode_t(data->advertised, val);
688 
689 	/* Get LP advertisement EEE */
690 	val = ax88179_phy_read_mmd_indirect(dev, MDIO_AN_EEE_LPABLE,
691 					    MDIO_MMD_AN);
692 	if (val < 0)
693 		return val;
694 	mii_eee_cap1_mod_linkmode_t(data->lp_advertised, val);
695 
696 	return 0;
697 }
698 
699 static int
700 ax88179_ethtool_set_eee(struct usbnet *dev, struct ethtool_keee *data)
701 {
702 	u16 tmp16 = linkmode_to_mii_eee_cap1_t(data->advertised);
703 
704 	return ax88179_phy_write_mmd_indirect(dev, MDIO_AN_EEE_ADV,
705 					      MDIO_MMD_AN, tmp16);
706 }
707 
708 static int ax88179_chk_eee(struct usbnet *dev)
709 {
710 	struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET };
711 	struct ax88179_data *priv = dev->driver_priv;
712 
713 	mii_ethtool_gset(&dev->mii, &ecmd);
714 
715 	if (ecmd.duplex & DUPLEX_FULL) {
716 		int eee_lp, eee_cap, eee_adv;
717 		u32 lp, cap, adv, supported = 0;
718 
719 		eee_cap = ax88179_phy_read_mmd_indirect(dev,
720 							MDIO_PCS_EEE_ABLE,
721 							MDIO_MMD_PCS);
722 		if (eee_cap < 0) {
723 			priv->eee_active = 0;
724 			return false;
725 		}
726 
727 		cap = mmd_eee_cap_to_ethtool_sup_t(eee_cap);
728 		if (!cap) {
729 			priv->eee_active = 0;
730 			return false;
731 		}
732 
733 		eee_lp = ax88179_phy_read_mmd_indirect(dev,
734 						       MDIO_AN_EEE_LPABLE,
735 						       MDIO_MMD_AN);
736 		if (eee_lp < 0) {
737 			priv->eee_active = 0;
738 			return false;
739 		}
740 
741 		eee_adv = ax88179_phy_read_mmd_indirect(dev,
742 							MDIO_AN_EEE_ADV,
743 							MDIO_MMD_AN);
744 
745 		if (eee_adv < 0) {
746 			priv->eee_active = 0;
747 			return false;
748 		}
749 
750 		adv = mmd_eee_adv_to_ethtool_adv_t(eee_adv);
751 		lp = mmd_eee_adv_to_ethtool_adv_t(eee_lp);
752 		supported = (ecmd.speed == SPEED_1000) ?
753 			     SUPPORTED_1000baseT_Full :
754 			     SUPPORTED_100baseT_Full;
755 
756 		if (!(lp & adv & supported)) {
757 			priv->eee_active = 0;
758 			return false;
759 		}
760 
761 		priv->eee_active = 1;
762 		return true;
763 	}
764 
765 	priv->eee_active = 0;
766 	return false;
767 }
768 
769 static void ax88179_disable_eee(struct usbnet *dev)
770 {
771 	u16 tmp16;
772 
773 	tmp16 = GMII_PHY_PGSEL_PAGE3;
774 	ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
775 			  GMII_PHY_PAGE_SELECT, 2, &tmp16);
776 
777 	tmp16 = 0x3246;
778 	ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
779 			  MII_PHYADDR, 2, &tmp16);
780 
781 	tmp16 = GMII_PHY_PGSEL_PAGE0;
782 	ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
783 			  GMII_PHY_PAGE_SELECT, 2, &tmp16);
784 }
785 
786 static void ax88179_enable_eee(struct usbnet *dev)
787 {
788 	u16 tmp16;
789 
790 	tmp16 = GMII_PHY_PGSEL_PAGE3;
791 	ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
792 			  GMII_PHY_PAGE_SELECT, 2, &tmp16);
793 
794 	tmp16 = 0x3247;
795 	ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
796 			  MII_PHYADDR, 2, &tmp16);
797 
798 	tmp16 = GMII_PHY_PGSEL_PAGE5;
799 	ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
800 			  GMII_PHY_PAGE_SELECT, 2, &tmp16);
801 
802 	tmp16 = 0x0680;
803 	ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
804 			  MII_BMSR, 2, &tmp16);
805 
806 	tmp16 = GMII_PHY_PGSEL_PAGE0;
807 	ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
808 			  GMII_PHY_PAGE_SELECT, 2, &tmp16);
809 }
810 
811 static int ax88179_get_eee(struct net_device *net, struct ethtool_keee *edata)
812 {
813 	struct usbnet *dev = netdev_priv(net);
814 	struct ax88179_data *priv = dev->driver_priv;
815 
816 	edata->eee_enabled = priv->eee_enabled;
817 	edata->eee_active = priv->eee_active;
818 
819 	return ax88179_ethtool_get_eee(dev, edata);
820 }
821 
822 static int ax88179_set_eee(struct net_device *net, struct ethtool_keee *edata)
823 {
824 	struct usbnet *dev = netdev_priv(net);
825 	struct ax88179_data *priv = dev->driver_priv;
826 	int ret;
827 
828 	priv->eee_enabled = edata->eee_enabled;
829 	if (!priv->eee_enabled) {
830 		ax88179_disable_eee(dev);
831 	} else {
832 		priv->eee_enabled = ax88179_chk_eee(dev);
833 		if (!priv->eee_enabled)
834 			return -EOPNOTSUPP;
835 
836 		ax88179_enable_eee(dev);
837 	}
838 
839 	ret = ax88179_ethtool_set_eee(dev, edata);
840 	if (ret)
841 		return ret;
842 
843 	mii_nway_restart(&dev->mii);
844 
845 	usbnet_link_change(dev, 0, 0);
846 
847 	return ret;
848 }
849 
850 static int ax88179_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
851 {
852 	struct usbnet *dev = netdev_priv(net);
853 	return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
854 }
855 
856 static const struct ethtool_ops ax88179_ethtool_ops = {
857 	.get_link		= ethtool_op_get_link,
858 	.get_msglevel		= usbnet_get_msglevel,
859 	.set_msglevel		= usbnet_set_msglevel,
860 	.get_wol		= ax88179_get_wol,
861 	.set_wol		= ax88179_set_wol,
862 	.get_eeprom_len		= ax88179_get_eeprom_len,
863 	.get_eeprom		= ax88179_get_eeprom,
864 	.set_eeprom		= ax88179_set_eeprom,
865 	.get_eee		= ax88179_get_eee,
866 	.set_eee		= ax88179_set_eee,
867 	.nway_reset		= usbnet_nway_reset,
868 	.get_link_ksettings	= ax88179_get_link_ksettings,
869 	.set_link_ksettings	= ax88179_set_link_ksettings,
870 	.get_ts_info		= ethtool_op_get_ts_info,
871 };
872 
873 static void ax88179_set_multicast(struct net_device *net)
874 {
875 	struct usbnet *dev = netdev_priv(net);
876 	struct ax88179_data *data = dev->driver_priv;
877 	u8 *m_filter = ((u8 *)dev->data);
878 
879 	data->rxctl = (AX_RX_CTL_START | AX_RX_CTL_AB | AX_RX_CTL_IPE);
880 
881 	if (net->flags & IFF_PROMISC) {
882 		data->rxctl |= AX_RX_CTL_PRO;
883 	} else if (net->flags & IFF_ALLMULTI ||
884 		   netdev_mc_count(net) > AX_MAX_MCAST) {
885 		data->rxctl |= AX_RX_CTL_AMALL;
886 	} else if (netdev_mc_empty(net)) {
887 		/* just broadcast and directed */
888 	} else {
889 		/* We use dev->data for our 8 byte filter buffer
890 		 * to avoid allocating memory that is tricky to free later
891 		 */
892 		u32 crc_bits;
893 		struct netdev_hw_addr *ha;
894 
895 		memset(m_filter, 0, AX_MCAST_FLTSIZE);
896 
897 		netdev_for_each_mc_addr(ha, net) {
898 			crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26;
899 			*(m_filter + (crc_bits >> 3)) |= (1 << (crc_bits & 7));
900 		}
901 
902 		ax88179_write_cmd_async(dev, AX_ACCESS_MAC, AX_MULFLTARY,
903 					AX_MCAST_FLTSIZE, AX_MCAST_FLTSIZE,
904 					m_filter);
905 
906 		data->rxctl |= AX_RX_CTL_AM;
907 	}
908 
909 	ax88179_write_cmd_async(dev, AX_ACCESS_MAC, AX_RX_CTL,
910 				2, 2, &data->rxctl);
911 }
912 
913 static int
914 ax88179_set_features(struct net_device *net, netdev_features_t features)
915 {
916 	u8 tmp;
917 	struct usbnet *dev = netdev_priv(net);
918 	netdev_features_t changed = net->features ^ features;
919 
920 	if (changed & NETIF_F_IP_CSUM) {
921 		ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_TXCOE_CTL, 1, 1, &tmp);
922 		tmp ^= AX_TXCOE_TCP | AX_TXCOE_UDP;
923 		ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_TXCOE_CTL, 1, 1, &tmp);
924 	}
925 
926 	if (changed & NETIF_F_IPV6_CSUM) {
927 		ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_TXCOE_CTL, 1, 1, &tmp);
928 		tmp ^= AX_TXCOE_TCPV6 | AX_TXCOE_UDPV6;
929 		ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_TXCOE_CTL, 1, 1, &tmp);
930 	}
931 
932 	if (changed & NETIF_F_RXCSUM) {
933 		ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_RXCOE_CTL, 1, 1, &tmp);
934 		tmp ^= AX_RXCOE_IP | AX_RXCOE_TCP | AX_RXCOE_UDP |
935 		       AX_RXCOE_TCPV6 | AX_RXCOE_UDPV6;
936 		ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RXCOE_CTL, 1, 1, &tmp);
937 	}
938 
939 	return 0;
940 }
941 
942 static int ax88179_change_mtu(struct net_device *net, int new_mtu)
943 {
944 	struct usbnet *dev = netdev_priv(net);
945 	u16 tmp16;
946 
947 	WRITE_ONCE(net->mtu, new_mtu);
948 	dev->hard_mtu = net->mtu + net->hard_header_len;
949 
950 	if (net->mtu > 1500) {
951 		ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
952 				 2, 2, &tmp16);
953 		tmp16 |= AX_MEDIUM_JUMBO_EN;
954 		ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
955 				  2, 2, &tmp16);
956 	} else {
957 		ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
958 				 2, 2, &tmp16);
959 		tmp16 &= ~AX_MEDIUM_JUMBO_EN;
960 		ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
961 				  2, 2, &tmp16);
962 	}
963 
964 	/* max qlen depend on hard_mtu and rx_urb_size */
965 	usbnet_update_max_qlen(dev);
966 
967 	return 0;
968 }
969 
970 static int ax88179_set_mac_addr(struct net_device *net, void *p)
971 {
972 	struct usbnet *dev = netdev_priv(net);
973 	struct sockaddr *addr = p;
974 	int ret;
975 
976 	if (netif_running(net))
977 		return -EBUSY;
978 	if (!is_valid_ether_addr(addr->sa_data))
979 		return -EADDRNOTAVAIL;
980 
981 	eth_hw_addr_set(net, addr->sa_data);
982 
983 	/* Set the MAC address */
984 	ret = ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_NODE_ID, ETH_ALEN,
985 				 ETH_ALEN, net->dev_addr);
986 	if (ret < 0)
987 		return ret;
988 
989 	return 0;
990 }
991 
992 static const struct net_device_ops ax88179_netdev_ops = {
993 	.ndo_open		= usbnet_open,
994 	.ndo_stop		= usbnet_stop,
995 	.ndo_start_xmit		= usbnet_start_xmit,
996 	.ndo_tx_timeout		= usbnet_tx_timeout,
997 	.ndo_get_stats64	= dev_get_tstats64,
998 	.ndo_change_mtu		= ax88179_change_mtu,
999 	.ndo_set_mac_address	= ax88179_set_mac_addr,
1000 	.ndo_validate_addr	= eth_validate_addr,
1001 	.ndo_eth_ioctl		= ax88179_ioctl,
1002 	.ndo_set_rx_mode	= ax88179_set_multicast,
1003 	.ndo_set_features	= ax88179_set_features,
1004 };
1005 
1006 static int ax88179_check_eeprom(struct usbnet *dev)
1007 {
1008 	u8 i, buf, eeprom[20];
1009 	u16 csum, delay = HZ / 10;
1010 	unsigned long jtimeout;
1011 
1012 	/* Read EEPROM content */
1013 	for (i = 0; i < 6; i++) {
1014 		buf = i;
1015 		if (ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_SROM_ADDR,
1016 				      1, 1, &buf) < 0)
1017 			return -EINVAL;
1018 
1019 		buf = EEP_RD;
1020 		if (ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_SROM_CMD,
1021 				      1, 1, &buf) < 0)
1022 			return -EINVAL;
1023 
1024 		jtimeout = jiffies + delay;
1025 		do {
1026 			ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_SROM_CMD,
1027 					 1, 1, &buf);
1028 
1029 			if (time_after(jiffies, jtimeout))
1030 				return -EINVAL;
1031 
1032 		} while (buf & EEP_BUSY);
1033 
1034 		__ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_SROM_DATA_LOW,
1035 				   2, 2, &eeprom[i * 2]);
1036 
1037 		if ((i == 0) && (eeprom[0] == 0xFF))
1038 			return -EINVAL;
1039 	}
1040 
1041 	csum = eeprom[6] + eeprom[7] + eeprom[8] + eeprom[9];
1042 	csum = (csum >> 8) + (csum & 0xff);
1043 	if ((csum + eeprom[10]) != 0xff)
1044 		return -EINVAL;
1045 
1046 	return 0;
1047 }
1048 
1049 static int ax88179_check_efuse(struct usbnet *dev, u16 *ledmode)
1050 {
1051 	u8	i;
1052 	u8	efuse[64];
1053 	u16	csum = 0;
1054 
1055 	if (ax88179_read_cmd(dev, AX_ACCESS_EFUS, 0, 64, 64, efuse) < 0)
1056 		return -EINVAL;
1057 
1058 	if (*efuse == 0xFF)
1059 		return -EINVAL;
1060 
1061 	for (i = 0; i < 64; i++)
1062 		csum = csum + efuse[i];
1063 
1064 	while (csum > 255)
1065 		csum = (csum & 0x00FF) + ((csum >> 8) & 0x00FF);
1066 
1067 	if (csum != 0xFF)
1068 		return -EINVAL;
1069 
1070 	*ledmode = (efuse[51] << 8) | efuse[52];
1071 
1072 	return 0;
1073 }
1074 
1075 static int ax88179_convert_old_led(struct usbnet *dev, u16 *ledvalue)
1076 {
1077 	u16 led;
1078 
1079 	/* Loaded the old eFuse LED Mode */
1080 	if (ax88179_read_cmd(dev, AX_ACCESS_EEPROM, 0x3C, 1, 2, &led) < 0)
1081 		return -EINVAL;
1082 
1083 	led >>= 8;
1084 	switch (led) {
1085 	case 0xFF:
1086 		led = LED0_ACTIVE | LED1_LINK_10 | LED1_LINK_100 |
1087 		      LED1_LINK_1000 | LED2_ACTIVE | LED2_LINK_10 |
1088 		      LED2_LINK_100 | LED2_LINK_1000 | LED_VALID;
1089 		break;
1090 	case 0xFE:
1091 		led = LED0_ACTIVE | LED1_LINK_1000 | LED2_LINK_100 | LED_VALID;
1092 		break;
1093 	case 0xFD:
1094 		led = LED0_ACTIVE | LED1_LINK_1000 | LED2_LINK_100 |
1095 		      LED2_LINK_10 | LED_VALID;
1096 		break;
1097 	case 0xFC:
1098 		led = LED0_ACTIVE | LED1_ACTIVE | LED1_LINK_1000 | LED2_ACTIVE |
1099 		      LED2_LINK_100 | LED2_LINK_10 | LED_VALID;
1100 		break;
1101 	default:
1102 		led = LED0_ACTIVE | LED1_LINK_10 | LED1_LINK_100 |
1103 		      LED1_LINK_1000 | LED2_ACTIVE | LED2_LINK_10 |
1104 		      LED2_LINK_100 | LED2_LINK_1000 | LED_VALID;
1105 		break;
1106 	}
1107 
1108 	*ledvalue = led;
1109 
1110 	return 0;
1111 }
1112 
1113 static int ax88179_led_setting(struct usbnet *dev)
1114 {
1115 	u8 ledfd, value = 0;
1116 	u16 tmp, ledact, ledlink, ledvalue = 0, delay = HZ / 10;
1117 	unsigned long jtimeout;
1118 
1119 	/* Check AX88179 version. UA1 or UA2*/
1120 	ax88179_read_cmd(dev, AX_ACCESS_MAC, GENERAL_STATUS, 1, 1, &value);
1121 
1122 	if (!(value & AX_SECLD)) {	/* UA1 */
1123 		value = AX_GPIO_CTRL_GPIO3EN | AX_GPIO_CTRL_GPIO2EN |
1124 			AX_GPIO_CTRL_GPIO1EN;
1125 		if (ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_GPIO_CTRL,
1126 				      1, 1, &value) < 0)
1127 			return -EINVAL;
1128 	}
1129 
1130 	/* Check EEPROM */
1131 	if (!ax88179_check_eeprom(dev)) {
1132 		value = 0x42;
1133 		if (ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_SROM_ADDR,
1134 				      1, 1, &value) < 0)
1135 			return -EINVAL;
1136 
1137 		value = EEP_RD;
1138 		if (ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_SROM_CMD,
1139 				      1, 1, &value) < 0)
1140 			return -EINVAL;
1141 
1142 		jtimeout = jiffies + delay;
1143 		do {
1144 			ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_SROM_CMD,
1145 					 1, 1, &value);
1146 
1147 			if (time_after(jiffies, jtimeout))
1148 				return -EINVAL;
1149 
1150 		} while (value & EEP_BUSY);
1151 
1152 		ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_SROM_DATA_HIGH,
1153 				 1, 1, &value);
1154 		ledvalue = (value << 8);
1155 
1156 		ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_SROM_DATA_LOW,
1157 				 1, 1, &value);
1158 		ledvalue |= value;
1159 
1160 		/* load internal ROM for defaule setting */
1161 		if ((ledvalue == 0xFFFF) || ((ledvalue & LED_VALID) == 0))
1162 			ax88179_convert_old_led(dev, &ledvalue);
1163 
1164 	} else if (!ax88179_check_efuse(dev, &ledvalue)) {
1165 		if ((ledvalue == 0xFFFF) || ((ledvalue & LED_VALID) == 0))
1166 			ax88179_convert_old_led(dev, &ledvalue);
1167 	} else {
1168 		ax88179_convert_old_led(dev, &ledvalue);
1169 	}
1170 
1171 	tmp = GMII_PHY_PGSEL_EXT;
1172 	ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
1173 			  GMII_PHY_PAGE_SELECT, 2, &tmp);
1174 
1175 	tmp = 0x2c;
1176 	ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
1177 			  GMII_PHYPAGE, 2, &tmp);
1178 
1179 	ax88179_read_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
1180 			 GMII_LED_ACT, 2, &ledact);
1181 
1182 	ax88179_read_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
1183 			 GMII_LED_LINK, 2, &ledlink);
1184 
1185 	ledact &= GMII_LED_ACTIVE_MASK;
1186 	ledlink &= GMII_LED_LINK_MASK;
1187 
1188 	if (ledvalue & LED0_ACTIVE)
1189 		ledact |= GMII_LED0_ACTIVE;
1190 
1191 	if (ledvalue & LED1_ACTIVE)
1192 		ledact |= GMII_LED1_ACTIVE;
1193 
1194 	if (ledvalue & LED2_ACTIVE)
1195 		ledact |= GMII_LED2_ACTIVE;
1196 
1197 	if (ledvalue & LED0_LINK_10)
1198 		ledlink |= GMII_LED0_LINK_10;
1199 
1200 	if (ledvalue & LED1_LINK_10)
1201 		ledlink |= GMII_LED1_LINK_10;
1202 
1203 	if (ledvalue & LED2_LINK_10)
1204 		ledlink |= GMII_LED2_LINK_10;
1205 
1206 	if (ledvalue & LED0_LINK_100)
1207 		ledlink |= GMII_LED0_LINK_100;
1208 
1209 	if (ledvalue & LED1_LINK_100)
1210 		ledlink |= GMII_LED1_LINK_100;
1211 
1212 	if (ledvalue & LED2_LINK_100)
1213 		ledlink |= GMII_LED2_LINK_100;
1214 
1215 	if (ledvalue & LED0_LINK_1000)
1216 		ledlink |= GMII_LED0_LINK_1000;
1217 
1218 	if (ledvalue & LED1_LINK_1000)
1219 		ledlink |= GMII_LED1_LINK_1000;
1220 
1221 	if (ledvalue & LED2_LINK_1000)
1222 		ledlink |= GMII_LED2_LINK_1000;
1223 
1224 	tmp = ledact;
1225 	ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
1226 			  GMII_LED_ACT, 2, &tmp);
1227 
1228 	tmp = ledlink;
1229 	ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
1230 			  GMII_LED_LINK, 2, &tmp);
1231 
1232 	tmp = GMII_PHY_PGSEL_PAGE0;
1233 	ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
1234 			  GMII_PHY_PAGE_SELECT, 2, &tmp);
1235 
1236 	/* LED full duplex setting */
1237 	ledfd = 0;
1238 	if (ledvalue & LED0_FD)
1239 		ledfd |= 0x01;
1240 	else if ((ledvalue & LED0_USB3_MASK) == 0)
1241 		ledfd |= 0x02;
1242 
1243 	if (ledvalue & LED1_FD)
1244 		ledfd |= 0x04;
1245 	else if ((ledvalue & LED1_USB3_MASK) == 0)
1246 		ledfd |= 0x08;
1247 
1248 	if (ledvalue & LED2_FD)
1249 		ledfd |= 0x10;
1250 	else if ((ledvalue & LED2_USB3_MASK) == 0)
1251 		ledfd |= 0x20;
1252 
1253 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_LEDCTRL, 1, 1, &ledfd);
1254 
1255 	return 0;
1256 }
1257 
1258 static void ax88179_get_mac_addr(struct usbnet *dev)
1259 {
1260 	u8 mac[ETH_ALEN];
1261 
1262 	memset(mac, 0, sizeof(mac));
1263 
1264 	/* Maybe the boot loader passed the MAC address via device tree */
1265 	if (!eth_platform_get_mac_address(&dev->udev->dev, mac)) {
1266 		netif_dbg(dev, ifup, dev->net,
1267 			  "MAC address read from device tree");
1268 	} else {
1269 		ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_NODE_ID, ETH_ALEN,
1270 				 ETH_ALEN, mac);
1271 		netif_dbg(dev, ifup, dev->net,
1272 			  "MAC address read from ASIX chip");
1273 	}
1274 
1275 	if (is_valid_ether_addr(mac)) {
1276 		eth_hw_addr_set(dev->net, mac);
1277 		if (!is_local_ether_addr(mac))
1278 			dev->net->addr_assign_type = NET_ADDR_PERM;
1279 	} else {
1280 		netdev_info(dev->net, "invalid MAC address, using random\n");
1281 	}
1282 
1283 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_NODE_ID, ETH_ALEN, ETH_ALEN,
1284 			  dev->net->dev_addr);
1285 }
1286 
1287 static int ax88179_bind(struct usbnet *dev, struct usb_interface *intf)
1288 {
1289 	struct ax88179_data *ax179_data;
1290 	int ret;
1291 
1292 	ret = usbnet_get_endpoints(dev, intf);
1293 	if (ret < 0)
1294 		return ret;
1295 
1296 	ax179_data = kzalloc(sizeof(*ax179_data), GFP_KERNEL);
1297 	if (!ax179_data)
1298 		return -ENOMEM;
1299 
1300 	dev->driver_priv = ax179_data;
1301 
1302 	dev->net->netdev_ops = &ax88179_netdev_ops;
1303 	dev->net->ethtool_ops = &ax88179_ethtool_ops;
1304 	dev->net->needed_headroom = 8;
1305 	dev->net->max_mtu = 4088;
1306 
1307 	/* Initialize MII structure */
1308 	dev->mii.dev = dev->net;
1309 	dev->mii.mdio_read = ax88179_mdio_read;
1310 	dev->mii.mdio_write = ax88179_mdio_write;
1311 	dev->mii.phy_id_mask = 0xff;
1312 	dev->mii.reg_num_mask = 0xff;
1313 	dev->mii.phy_id = 0x03;
1314 	dev->mii.supports_gmii = 1;
1315 
1316 	dev->net->features |= NETIF_F_SG | NETIF_F_IP_CSUM |
1317 			      NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM | NETIF_F_TSO;
1318 
1319 	dev->net->hw_features |= dev->net->features;
1320 
1321 	netif_set_tso_max_size(dev->net, 16384);
1322 
1323 	ax88179_reset(dev);
1324 
1325 	return 0;
1326 }
1327 
1328 static void ax88179_unbind(struct usbnet *dev, struct usb_interface *intf)
1329 {
1330 	struct ax88179_data *ax179_data = dev->driver_priv;
1331 	u16 tmp16;
1332 
1333 	/* Configure RX control register => stop operation */
1334 	tmp16 = AX_RX_CTL_STOP;
1335 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RX_CTL, 2, 2, &tmp16);
1336 
1337 	tmp16 = 0;
1338 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_CLK_SELECT, 1, 1, &tmp16);
1339 
1340 	/* Power down ethernet PHY */
1341 	tmp16 = 0;
1342 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL, 2, 2, &tmp16);
1343 
1344 	kfree(ax179_data);
1345 }
1346 
1347 static void
1348 ax88179_rx_checksum(struct sk_buff *skb, u32 *pkt_hdr)
1349 {
1350 	skb->ip_summed = CHECKSUM_NONE;
1351 
1352 	/* checksum error bit is set */
1353 	if ((*pkt_hdr & AX_RXHDR_L3CSUM_ERR) ||
1354 	    (*pkt_hdr & AX_RXHDR_L4CSUM_ERR))
1355 		return;
1356 
1357 	/* It must be a TCP or UDP packet with a valid checksum */
1358 	if (((*pkt_hdr & AX_RXHDR_L4_TYPE_MASK) == AX_RXHDR_L4_TYPE_TCP) ||
1359 	    ((*pkt_hdr & AX_RXHDR_L4_TYPE_MASK) == AX_RXHDR_L4_TYPE_UDP))
1360 		skb->ip_summed = CHECKSUM_UNNECESSARY;
1361 }
1362 
1363 static int ax88179_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
1364 {
1365 	struct sk_buff *ax_skb;
1366 	int pkt_cnt;
1367 	u32 rx_hdr;
1368 	u16 hdr_off;
1369 	u32 *pkt_hdr;
1370 
1371 	/* At the end of the SKB, there's a header telling us how many packets
1372 	 * are bundled into this buffer and where we can find an array of
1373 	 * per-packet metadata (which contains elements encoded into u16).
1374 	 */
1375 
1376 	/* SKB contents for current firmware:
1377 	 *   <packet 1> <padding>
1378 	 *   ...
1379 	 *   <packet N> <padding>
1380 	 *   <per-packet metadata entry 1> <dummy header>
1381 	 *   ...
1382 	 *   <per-packet metadata entry N> <dummy header>
1383 	 *   <padding2> <rx_hdr>
1384 	 *
1385 	 * where:
1386 	 *   <packet N> contains pkt_len bytes:
1387 	 *		2 bytes of IP alignment pseudo header
1388 	 *		packet received
1389 	 *   <per-packet metadata entry N> contains 4 bytes:
1390 	 *		pkt_len and fields AX_RXHDR_*
1391 	 *   <padding>	0-7 bytes to terminate at
1392 	 *		8 bytes boundary (64-bit).
1393 	 *   <padding2> 4 bytes to make rx_hdr terminate at
1394 	 *		8 bytes boundary (64-bit)
1395 	 *   <dummy-header> contains 4 bytes:
1396 	 *		pkt_len=0 and AX_RXHDR_DROP_ERR
1397 	 *   <rx-hdr>	contains 4 bytes:
1398 	 *		pkt_cnt and hdr_off (offset of
1399 	 *		  <per-packet metadata entry 1>)
1400 	 *
1401 	 * pkt_cnt is number of entrys in the per-packet metadata.
1402 	 * In current firmware there is 2 entrys per packet.
1403 	 * The first points to the packet and the
1404 	 *  second is a dummy header.
1405 	 * This was done probably to align fields in 64-bit and
1406 	 *  maintain compatibility with old firmware.
1407 	 * This code assumes that <dummy header> and <padding2> are
1408 	 *  optional.
1409 	 */
1410 
1411 	if (skb->len < 4)
1412 		return 0;
1413 	skb_trim(skb, skb->len - 4);
1414 	rx_hdr = get_unaligned_le32(skb_tail_pointer(skb));
1415 	pkt_cnt = (u16)rx_hdr;
1416 	hdr_off = (u16)(rx_hdr >> 16);
1417 
1418 	if (pkt_cnt == 0)
1419 		return 0;
1420 
1421 	/* Make sure that the bounds of the metadata array are inside the SKB
1422 	 * (and in front of the counter at the end).
1423 	 */
1424 	if (pkt_cnt * 4 + hdr_off > skb->len)
1425 		return 0;
1426 	pkt_hdr = (u32 *)(skb->data + hdr_off);
1427 
1428 	/* Packets must not overlap the metadata array */
1429 	skb_trim(skb, hdr_off);
1430 
1431 	for (; pkt_cnt > 0; pkt_cnt--, pkt_hdr++) {
1432 		u16 pkt_len_plus_padd;
1433 		u16 pkt_len;
1434 
1435 		le32_to_cpus(pkt_hdr);
1436 		pkt_len = (*pkt_hdr >> 16) & 0x1fff;
1437 		pkt_len_plus_padd = (pkt_len + 7) & 0xfff8;
1438 
1439 		/* Skip dummy header used for alignment
1440 		 */
1441 		if (pkt_len == 0)
1442 			continue;
1443 
1444 		if (pkt_len_plus_padd > skb->len)
1445 			return 0;
1446 
1447 		/* Check CRC or runt packet */
1448 		if ((*pkt_hdr & (AX_RXHDR_CRC_ERR | AX_RXHDR_DROP_ERR)) ||
1449 		    pkt_len < 2 + ETH_HLEN) {
1450 			dev->net->stats.rx_errors++;
1451 			skb_pull(skb, pkt_len_plus_padd);
1452 			continue;
1453 		}
1454 
1455 		/* last packet */
1456 		if (pkt_len_plus_padd == skb->len) {
1457 			skb_trim(skb, pkt_len);
1458 
1459 			/* Skip IP alignment pseudo header */
1460 			skb_pull(skb, 2);
1461 
1462 			ax88179_rx_checksum(skb, pkt_hdr);
1463 			return 1;
1464 		}
1465 
1466 		ax_skb = netdev_alloc_skb_ip_align(dev->net, pkt_len);
1467 		if (!ax_skb)
1468 			return 0;
1469 		skb_put(ax_skb, pkt_len);
1470 		memcpy(ax_skb->data, skb->data + 2, pkt_len);
1471 
1472 		ax88179_rx_checksum(ax_skb, pkt_hdr);
1473 		usbnet_skb_return(dev, ax_skb);
1474 
1475 		skb_pull(skb, pkt_len_plus_padd);
1476 	}
1477 
1478 	return 0;
1479 }
1480 
1481 static struct sk_buff *
1482 ax88179_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags)
1483 {
1484 	u32 tx_hdr1, tx_hdr2;
1485 	int frame_size = dev->maxpacket;
1486 	int headroom;
1487 	void *ptr;
1488 
1489 	tx_hdr1 = skb->len;
1490 	tx_hdr2 = skb_shinfo(skb)->gso_size; /* Set TSO mss */
1491 	if (((skb->len + 8) % frame_size) == 0)
1492 		tx_hdr2 |= 0x80008000;	/* Enable padding */
1493 
1494 	headroom = skb_headroom(skb) - 8;
1495 
1496 	if ((dev->net->features & NETIF_F_SG) && skb_linearize(skb))
1497 		return NULL;
1498 
1499 	if ((skb_header_cloned(skb) || headroom < 0) &&
1500 	    pskb_expand_head(skb, headroom < 0 ? 8 : 0, 0, GFP_ATOMIC)) {
1501 		dev_kfree_skb_any(skb);
1502 		return NULL;
1503 	}
1504 
1505 	ptr = skb_push(skb, 8);
1506 	put_unaligned_le32(tx_hdr1, ptr);
1507 	put_unaligned_le32(tx_hdr2, ptr + 4);
1508 
1509 	usbnet_set_skb_tx_stats(skb, (skb_shinfo(skb)->gso_segs ?: 1), 0);
1510 
1511 	return skb;
1512 }
1513 
1514 static int ax88179_link_reset(struct usbnet *dev)
1515 {
1516 	struct ax88179_data *ax179_data = dev->driver_priv;
1517 	u8 tmp[5], link_sts;
1518 	u16 mode, tmp16, delay = HZ / 10;
1519 	u32 tmp32 = 0x40000000;
1520 	unsigned long jtimeout;
1521 
1522 	jtimeout = jiffies + delay;
1523 	while (tmp32 & 0x40000000) {
1524 		mode = 0;
1525 		ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RX_CTL, 2, 2, &mode);
1526 		ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RX_CTL, 2, 2,
1527 				  &ax179_data->rxctl);
1528 
1529 		/*link up, check the usb device control TX FIFO full or empty*/
1530 		ax88179_read_cmd(dev, 0x81, 0x8c, 0, 4, &tmp32);
1531 
1532 		if (time_after(jiffies, jtimeout))
1533 			return 0;
1534 	}
1535 
1536 	mode = AX_MEDIUM_RECEIVE_EN | AX_MEDIUM_TXFLOW_CTRLEN |
1537 	       AX_MEDIUM_RXFLOW_CTRLEN;
1538 
1539 	ax88179_read_cmd(dev, AX_ACCESS_MAC, PHYSICAL_LINK_STATUS,
1540 			 1, 1, &link_sts);
1541 
1542 	ax88179_read_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
1543 			 GMII_PHY_PHYSR, 2, &tmp16);
1544 
1545 	if (!(tmp16 & GMII_PHY_PHYSR_LINK)) {
1546 		netdev_info(dev->net, "ax88179 - Link status is: 0\n");
1547 		return 0;
1548 	} else if (GMII_PHY_PHYSR_GIGA == (tmp16 & GMII_PHY_PHYSR_SMASK)) {
1549 		mode |= AX_MEDIUM_GIGAMODE | AX_MEDIUM_EN_125MHZ;
1550 		if (dev->net->mtu > 1500)
1551 			mode |= AX_MEDIUM_JUMBO_EN;
1552 
1553 		if (link_sts & AX_USB_SS)
1554 			memcpy(tmp, &AX88179_BULKIN_SIZE[0], 5);
1555 		else if (link_sts & AX_USB_HS)
1556 			memcpy(tmp, &AX88179_BULKIN_SIZE[1], 5);
1557 		else
1558 			memcpy(tmp, &AX88179_BULKIN_SIZE[3], 5);
1559 	} else if (GMII_PHY_PHYSR_100 == (tmp16 & GMII_PHY_PHYSR_SMASK)) {
1560 		mode |= AX_MEDIUM_PS;
1561 
1562 		if (link_sts & (AX_USB_SS | AX_USB_HS))
1563 			memcpy(tmp, &AX88179_BULKIN_SIZE[2], 5);
1564 		else
1565 			memcpy(tmp, &AX88179_BULKIN_SIZE[3], 5);
1566 	} else {
1567 		memcpy(tmp, &AX88179_BULKIN_SIZE[3], 5);
1568 	}
1569 
1570 	/* RX bulk configuration */
1571 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RX_BULKIN_QCTRL, 5, 5, tmp);
1572 
1573 	dev->rx_urb_size = (1024 * (tmp[3] + 2));
1574 
1575 	if (tmp16 & GMII_PHY_PHYSR_FULL)
1576 		mode |= AX_MEDIUM_FULL_DUPLEX;
1577 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
1578 			  2, 2, &mode);
1579 
1580 	ax179_data->eee_enabled = ax88179_chk_eee(dev);
1581 
1582 	netif_carrier_on(dev->net);
1583 
1584 	netdev_info(dev->net, "ax88179 - Link status is: 1\n");
1585 
1586 	return 0;
1587 }
1588 
1589 static int ax88179_reset(struct usbnet *dev)
1590 {
1591 	u8 buf[5];
1592 	u16 *tmp16;
1593 	u8 *tmp;
1594 	struct ax88179_data *ax179_data = dev->driver_priv;
1595 	struct ethtool_keee eee_data;
1596 
1597 	tmp16 = (u16 *)buf;
1598 	tmp = (u8 *)buf;
1599 
1600 	/* Power up ethernet PHY */
1601 	*tmp16 = 0;
1602 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL, 2, 2, tmp16);
1603 
1604 	*tmp16 = AX_PHYPWR_RSTCTL_IPRL;
1605 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL, 2, 2, tmp16);
1606 	msleep(500);
1607 
1608 	*tmp = AX_CLK_SELECT_ACS | AX_CLK_SELECT_BCS;
1609 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_CLK_SELECT, 1, 1, tmp);
1610 	msleep(200);
1611 
1612 	/* Ethernet PHY Auto Detach*/
1613 	ax88179_auto_detach(dev);
1614 
1615 	/* Read MAC address from DTB or asix chip */
1616 	ax88179_get_mac_addr(dev);
1617 	memcpy(dev->net->perm_addr, dev->net->dev_addr, ETH_ALEN);
1618 
1619 	/* RX bulk configuration */
1620 	memcpy(tmp, &AX88179_BULKIN_SIZE[0], 5);
1621 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RX_BULKIN_QCTRL, 5, 5, tmp);
1622 
1623 	dev->rx_urb_size = 1024 * 20;
1624 
1625 	*tmp = 0x34;
1626 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PAUSE_WATERLVL_LOW, 1, 1, tmp);
1627 
1628 	*tmp = 0x52;
1629 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PAUSE_WATERLVL_HIGH,
1630 			  1, 1, tmp);
1631 
1632 	/* Enable checksum offload */
1633 	*tmp = AX_RXCOE_IP | AX_RXCOE_TCP | AX_RXCOE_UDP |
1634 	       AX_RXCOE_TCPV6 | AX_RXCOE_UDPV6;
1635 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RXCOE_CTL, 1, 1, tmp);
1636 
1637 	*tmp = AX_TXCOE_IP | AX_TXCOE_TCP | AX_TXCOE_UDP |
1638 	       AX_TXCOE_TCPV6 | AX_TXCOE_UDPV6;
1639 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_TXCOE_CTL, 1, 1, tmp);
1640 
1641 	/* Configure RX control register => start operation */
1642 	*tmp16 = AX_RX_CTL_DROPCRCERR | AX_RX_CTL_IPE | AX_RX_CTL_START |
1643 		 AX_RX_CTL_AP | AX_RX_CTL_AMALL | AX_RX_CTL_AB;
1644 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RX_CTL, 2, 2, tmp16);
1645 
1646 	*tmp = AX_MONITOR_MODE_PMETYPE | AX_MONITOR_MODE_PMEPOL |
1647 	       AX_MONITOR_MODE_RWMP;
1648 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_MONITOR_MOD, 1, 1, tmp);
1649 
1650 	/* Configure default medium type => giga */
1651 	*tmp16 = AX_MEDIUM_RECEIVE_EN | AX_MEDIUM_TXFLOW_CTRLEN |
1652 		 AX_MEDIUM_RXFLOW_CTRLEN | AX_MEDIUM_FULL_DUPLEX |
1653 		 AX_MEDIUM_GIGAMODE;
1654 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
1655 			  2, 2, tmp16);
1656 
1657 	/* Check if WoL is supported */
1658 	ax179_data->wol_supported = 0;
1659 	if (ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_MONITOR_MOD,
1660 			     1, 1, &tmp) > 0)
1661 		ax179_data->wol_supported = WAKE_MAGIC | WAKE_PHY;
1662 
1663 	ax88179_led_setting(dev);
1664 
1665 	ax179_data->eee_enabled = 0;
1666 	ax179_data->eee_active = 0;
1667 
1668 	ax88179_disable_eee(dev);
1669 
1670 	ax88179_ethtool_get_eee(dev, &eee_data);
1671 	linkmode_zero(eee_data.advertised);
1672 	ax88179_ethtool_set_eee(dev, &eee_data);
1673 
1674 	/* Restart autoneg */
1675 	mii_nway_restart(&dev->mii);
1676 
1677 	usbnet_link_change(dev, 0, 0);
1678 
1679 	return 0;
1680 }
1681 
1682 static int ax88179_net_reset(struct usbnet *dev)
1683 {
1684 	u16 tmp16;
1685 
1686 	ax88179_read_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID, GMII_PHY_PHYSR,
1687 			 2, &tmp16);
1688 	if (tmp16) {
1689 		ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
1690 				 2, 2, &tmp16);
1691 		if (!(tmp16 & AX_MEDIUM_RECEIVE_EN)) {
1692 			tmp16 |= AX_MEDIUM_RECEIVE_EN;
1693 			ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
1694 					  2, 2, &tmp16);
1695 		}
1696 	} else {
1697 		ax88179_reset(dev);
1698 	}
1699 
1700 	return 0;
1701 }
1702 
1703 static int ax88179_stop(struct usbnet *dev)
1704 {
1705 	u16 tmp16;
1706 
1707 	ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
1708 			 2, 2, &tmp16);
1709 	tmp16 &= ~AX_MEDIUM_RECEIVE_EN;
1710 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
1711 			  2, 2, &tmp16);
1712 
1713 	return 0;
1714 }
1715 
1716 static const struct driver_info ax88179_info = {
1717 	.description = "ASIX AX88179 USB 3.0 Gigabit Ethernet",
1718 	.bind = ax88179_bind,
1719 	.unbind = ax88179_unbind,
1720 	.status = ax88179_status,
1721 	.link_reset = ax88179_link_reset,
1722 	.reset = ax88179_net_reset,
1723 	.stop = ax88179_stop,
1724 	.flags = FLAG_ETHER | FLAG_FRAMING_AX,
1725 	.rx_fixup = ax88179_rx_fixup,
1726 	.tx_fixup = ax88179_tx_fixup,
1727 };
1728 
1729 static const struct driver_info ax88178a_info = {
1730 	.description = "ASIX AX88178A USB 2.0 Gigabit Ethernet",
1731 	.bind = ax88179_bind,
1732 	.unbind = ax88179_unbind,
1733 	.status = ax88179_status,
1734 	.link_reset = ax88179_link_reset,
1735 	.reset = ax88179_net_reset,
1736 	.stop = ax88179_stop,
1737 	.flags = FLAG_ETHER | FLAG_FRAMING_AX,
1738 	.rx_fixup = ax88179_rx_fixup,
1739 	.tx_fixup = ax88179_tx_fixup,
1740 };
1741 
1742 static const struct driver_info cypress_GX3_info = {
1743 	.description = "Cypress GX3 SuperSpeed to Gigabit Ethernet Controller",
1744 	.bind = ax88179_bind,
1745 	.unbind = ax88179_unbind,
1746 	.status = ax88179_status,
1747 	.link_reset = ax88179_link_reset,
1748 	.reset = ax88179_net_reset,
1749 	.stop = ax88179_stop,
1750 	.flags = FLAG_ETHER | FLAG_FRAMING_AX,
1751 	.rx_fixup = ax88179_rx_fixup,
1752 	.tx_fixup = ax88179_tx_fixup,
1753 };
1754 
1755 static const struct driver_info dlink_dub1312_info = {
1756 	.description = "D-Link DUB-1312 USB 3.0 to Gigabit Ethernet Adapter",
1757 	.bind = ax88179_bind,
1758 	.unbind = ax88179_unbind,
1759 	.status = ax88179_status,
1760 	.link_reset = ax88179_link_reset,
1761 	.reset = ax88179_net_reset,
1762 	.stop = ax88179_stop,
1763 	.flags = FLAG_ETHER | FLAG_FRAMING_AX,
1764 	.rx_fixup = ax88179_rx_fixup,
1765 	.tx_fixup = ax88179_tx_fixup,
1766 };
1767 
1768 static const struct driver_info sitecom_info = {
1769 	.description = "Sitecom USB 3.0 to Gigabit Adapter",
1770 	.bind = ax88179_bind,
1771 	.unbind = ax88179_unbind,
1772 	.status = ax88179_status,
1773 	.link_reset = ax88179_link_reset,
1774 	.reset = ax88179_net_reset,
1775 	.stop = ax88179_stop,
1776 	.flags = FLAG_ETHER | FLAG_FRAMING_AX,
1777 	.rx_fixup = ax88179_rx_fixup,
1778 	.tx_fixup = ax88179_tx_fixup,
1779 };
1780 
1781 static const struct driver_info samsung_info = {
1782 	.description = "Samsung USB Ethernet Adapter",
1783 	.bind = ax88179_bind,
1784 	.unbind = ax88179_unbind,
1785 	.status = ax88179_status,
1786 	.link_reset = ax88179_link_reset,
1787 	.reset = ax88179_net_reset,
1788 	.stop = ax88179_stop,
1789 	.flags = FLAG_ETHER | FLAG_FRAMING_AX,
1790 	.rx_fixup = ax88179_rx_fixup,
1791 	.tx_fixup = ax88179_tx_fixup,
1792 };
1793 
1794 static const struct driver_info lenovo_info = {
1795 	.description = "Lenovo OneLinkDock Gigabit LAN",
1796 	.bind = ax88179_bind,
1797 	.unbind = ax88179_unbind,
1798 	.status = ax88179_status,
1799 	.link_reset = ax88179_link_reset,
1800 	.reset = ax88179_net_reset,
1801 	.stop = ax88179_stop,
1802 	.flags = FLAG_ETHER | FLAG_FRAMING_AX,
1803 	.rx_fixup = ax88179_rx_fixup,
1804 	.tx_fixup = ax88179_tx_fixup,
1805 };
1806 
1807 static const struct driver_info belkin_info = {
1808 	.description = "Belkin USB Ethernet Adapter",
1809 	.bind	= ax88179_bind,
1810 	.unbind = ax88179_unbind,
1811 	.status = ax88179_status,
1812 	.link_reset = ax88179_link_reset,
1813 	.reset	= ax88179_net_reset,
1814 	.stop	= ax88179_stop,
1815 	.flags	= FLAG_ETHER | FLAG_FRAMING_AX,
1816 	.rx_fixup = ax88179_rx_fixup,
1817 	.tx_fixup = ax88179_tx_fixup,
1818 };
1819 
1820 static const struct driver_info toshiba_info = {
1821 	.description = "Toshiba USB Ethernet Adapter",
1822 	.bind	= ax88179_bind,
1823 	.unbind = ax88179_unbind,
1824 	.status = ax88179_status,
1825 	.link_reset = ax88179_link_reset,
1826 	.reset	= ax88179_net_reset,
1827 	.stop = ax88179_stop,
1828 	.flags	= FLAG_ETHER | FLAG_FRAMING_AX,
1829 	.rx_fixup = ax88179_rx_fixup,
1830 	.tx_fixup = ax88179_tx_fixup,
1831 };
1832 
1833 static const struct driver_info mct_info = {
1834 	.description = "MCT USB 3.0 Gigabit Ethernet Adapter",
1835 	.bind	= ax88179_bind,
1836 	.unbind	= ax88179_unbind,
1837 	.status	= ax88179_status,
1838 	.link_reset = ax88179_link_reset,
1839 	.reset	= ax88179_net_reset,
1840 	.stop	= ax88179_stop,
1841 	.flags	= FLAG_ETHER | FLAG_FRAMING_AX,
1842 	.rx_fixup = ax88179_rx_fixup,
1843 	.tx_fixup = ax88179_tx_fixup,
1844 };
1845 
1846 static const struct driver_info at_umc2000_info = {
1847 	.description = "AT-UMC2000 USB 3.0/USB 3.1 Gen 1 to Gigabit Ethernet Adapter",
1848 	.bind   = ax88179_bind,
1849 	.unbind = ax88179_unbind,
1850 	.status = ax88179_status,
1851 	.link_reset = ax88179_link_reset,
1852 	.reset  = ax88179_net_reset,
1853 	.stop   = ax88179_stop,
1854 	.flags  = FLAG_ETHER | FLAG_FRAMING_AX,
1855 	.rx_fixup = ax88179_rx_fixup,
1856 	.tx_fixup = ax88179_tx_fixup,
1857 };
1858 
1859 static const struct driver_info at_umc200_info = {
1860 	.description = "AT-UMC200 USB 3.0/USB 3.1 Gen 1 to Fast Ethernet Adapter",
1861 	.bind   = ax88179_bind,
1862 	.unbind = ax88179_unbind,
1863 	.status = ax88179_status,
1864 	.link_reset = ax88179_link_reset,
1865 	.reset  = ax88179_net_reset,
1866 	.stop   = ax88179_stop,
1867 	.flags  = FLAG_ETHER | FLAG_FRAMING_AX,
1868 	.rx_fixup = ax88179_rx_fixup,
1869 	.tx_fixup = ax88179_tx_fixup,
1870 };
1871 
1872 static const struct driver_info at_umc2000sp_info = {
1873 	.description = "AT-UMC2000/SP USB 3.0/USB 3.1 Gen 1 to Gigabit Ethernet Adapter",
1874 	.bind   = ax88179_bind,
1875 	.unbind = ax88179_unbind,
1876 	.status = ax88179_status,
1877 	.link_reset = ax88179_link_reset,
1878 	.reset  = ax88179_net_reset,
1879 	.stop   = ax88179_stop,
1880 	.flags  = FLAG_ETHER | FLAG_FRAMING_AX,
1881 	.rx_fixup = ax88179_rx_fixup,
1882 	.tx_fixup = ax88179_tx_fixup,
1883 };
1884 
1885 static const struct usb_device_id products[] = {
1886 {
1887 	/* ASIX AX88179 10/100/1000 */
1888 	USB_DEVICE_AND_INTERFACE_INFO(0x0b95, 0x1790, 0xff, 0xff, 0),
1889 	.driver_info = (unsigned long)&ax88179_info,
1890 }, {
1891 	/* ASIX AX88178A 10/100/1000 */
1892 	USB_DEVICE_AND_INTERFACE_INFO(0x0b95, 0x178a, 0xff, 0xff, 0),
1893 	.driver_info = (unsigned long)&ax88178a_info,
1894 }, {
1895 	/* Cypress GX3 SuperSpeed to Gigabit Ethernet Bridge Controller */
1896 	USB_DEVICE_AND_INTERFACE_INFO(0x04b4, 0x3610, 0xff, 0xff, 0),
1897 	.driver_info = (unsigned long)&cypress_GX3_info,
1898 }, {
1899 	/* D-Link DUB-1312 USB 3.0 to Gigabit Ethernet Adapter */
1900 	USB_DEVICE_AND_INTERFACE_INFO(0x2001, 0x4a00, 0xff, 0xff, 0),
1901 	.driver_info = (unsigned long)&dlink_dub1312_info,
1902 }, {
1903 	/* Sitecom USB 3.0 to Gigabit Adapter */
1904 	USB_DEVICE_AND_INTERFACE_INFO(0x0df6, 0x0072, 0xff, 0xff, 0),
1905 	.driver_info = (unsigned long)&sitecom_info,
1906 }, {
1907 	/* Samsung USB Ethernet Adapter */
1908 	USB_DEVICE_AND_INTERFACE_INFO(0x04e8, 0xa100, 0xff, 0xff, 0),
1909 	.driver_info = (unsigned long)&samsung_info,
1910 }, {
1911 	/* Lenovo OneLinkDock Gigabit LAN */
1912 	USB_DEVICE_AND_INTERFACE_INFO(0x17ef, 0x304b, 0xff, 0xff, 0),
1913 	.driver_info = (unsigned long)&lenovo_info,
1914 }, {
1915 	/* Belkin B2B128 USB 3.0 Hub + Gigabit Ethernet Adapter */
1916 	USB_DEVICE_AND_INTERFACE_INFO(0x050d, 0x0128, 0xff, 0xff, 0),
1917 	.driver_info = (unsigned long)&belkin_info,
1918 }, {
1919 	/* Toshiba USB 3.0 GBit Ethernet Adapter */
1920 	USB_DEVICE_AND_INTERFACE_INFO(0x0930, 0x0a13, 0xff, 0xff, 0),
1921 	.driver_info = (unsigned long)&toshiba_info,
1922 }, {
1923 	/* Magic Control Technology U3-A9003 USB 3.0 Gigabit Ethernet Adapter */
1924 	USB_DEVICE_AND_INTERFACE_INFO(0x0711, 0x0179, 0xff, 0xff, 0),
1925 	.driver_info = (unsigned long)&mct_info,
1926 }, {
1927 	/* Allied Telesis AT-UMC2000 USB 3.0/USB 3.1 Gen 1 to Gigabit Ethernet Adapter */
1928 	USB_DEVICE_AND_INTERFACE_INFO(0x07c9, 0x000e, 0xff, 0xff, 0),
1929 	.driver_info = (unsigned long)&at_umc2000_info,
1930 }, {
1931 	/* Allied Telesis AT-UMC200 USB 3.0/USB 3.1 Gen 1 to Fast Ethernet Adapter */
1932 	USB_DEVICE_AND_INTERFACE_INFO(0x07c9, 0x000f, 0xff, 0xff, 0),
1933 	.driver_info = (unsigned long)&at_umc200_info,
1934 }, {
1935 	/* Allied Telesis AT-UMC2000/SP USB 3.0/USB 3.1 Gen 1 to Gigabit Ethernet Adapter */
1936 	USB_DEVICE_AND_INTERFACE_INFO(0x07c9, 0x0010, 0xff, 0xff, 0),
1937 	.driver_info = (unsigned long)&at_umc2000sp_info,
1938 },
1939 	{ },
1940 };
1941 MODULE_DEVICE_TABLE(usb, products);
1942 
1943 static struct usb_driver ax88179_178a_driver = {
1944 	.name =		"ax88179_178a",
1945 	.id_table =	products,
1946 	.probe =	usbnet_probe,
1947 	.suspend =	ax88179_suspend,
1948 	.resume =	ax88179_resume,
1949 	.reset_resume =	ax88179_resume,
1950 	.disconnect =	ax88179_disconnect,
1951 	.supports_autosuspend = 1,
1952 	.disable_hub_initiated_lpm = 1,
1953 };
1954 
1955 module_usb_driver(ax88179_178a_driver);
1956 
1957 MODULE_DESCRIPTION("ASIX AX88179/178A based USB 3.0/2.0 Gigabit Ethernet Devices");
1958 MODULE_LICENSE("GPL");
1959