xref: /openbmc/linux/drivers/net/usb/ax88179_178a.c (revision 06701297)
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 struct ax88179_data {
168 	u8  eee_enabled;
169 	u8  eee_active;
170 	u16 rxctl;
171 	u16 reserved;
172 };
173 
174 struct ax88179_int_data {
175 	__le32 intdata1;
176 	__le32 intdata2;
177 };
178 
179 static const struct {
180 	unsigned char ctrl, timer_l, timer_h, size, ifg;
181 } AX88179_BULKIN_SIZE[] =	{
182 	{7, 0x4f, 0,	0x12, 0xff},
183 	{7, 0x20, 3,	0x16, 0xff},
184 	{7, 0xae, 7,	0x18, 0xff},
185 	{7, 0xcc, 0x4c, 0x18, 8},
186 };
187 
188 static int __ax88179_read_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
189 			      u16 size, void *data, int in_pm)
190 {
191 	int ret;
192 	int (*fn)(struct usbnet *, u8, u8, u16, u16, void *, u16);
193 
194 	BUG_ON(!dev);
195 
196 	if (!in_pm)
197 		fn = usbnet_read_cmd;
198 	else
199 		fn = usbnet_read_cmd_nopm;
200 
201 	ret = fn(dev, cmd, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
202 		 value, index, data, size);
203 
204 	if (unlikely(ret < 0))
205 		netdev_warn(dev->net, "Failed to read reg index 0x%04x: %d\n",
206 			    index, ret);
207 
208 	return ret;
209 }
210 
211 static int __ax88179_write_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
212 			       u16 size, void *data, int in_pm)
213 {
214 	int ret;
215 	int (*fn)(struct usbnet *, u8, u8, u16, u16, const void *, u16);
216 
217 	BUG_ON(!dev);
218 
219 	if (!in_pm)
220 		fn = usbnet_write_cmd;
221 	else
222 		fn = usbnet_write_cmd_nopm;
223 
224 	ret = fn(dev, cmd, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
225 		 value, index, data, size);
226 
227 	if (unlikely(ret < 0))
228 		netdev_warn(dev->net, "Failed to write reg index 0x%04x: %d\n",
229 			    index, ret);
230 
231 	return ret;
232 }
233 
234 static void ax88179_write_cmd_async(struct usbnet *dev, u8 cmd, u16 value,
235 				    u16 index, u16 size, void *data)
236 {
237 	u16 buf;
238 
239 	if (2 == size) {
240 		buf = *((u16 *)data);
241 		cpu_to_le16s(&buf);
242 		usbnet_write_cmd_async(dev, cmd, USB_DIR_OUT | USB_TYPE_VENDOR |
243 				       USB_RECIP_DEVICE, value, index, &buf,
244 				       size);
245 	} else {
246 		usbnet_write_cmd_async(dev, cmd, USB_DIR_OUT | USB_TYPE_VENDOR |
247 				       USB_RECIP_DEVICE, value, index, data,
248 				       size);
249 	}
250 }
251 
252 static int ax88179_read_cmd_nopm(struct usbnet *dev, u8 cmd, u16 value,
253 				 u16 index, u16 size, void *data)
254 {
255 	int ret;
256 
257 	if (2 == size) {
258 		u16 buf;
259 		ret = __ax88179_read_cmd(dev, cmd, value, index, size, &buf, 1);
260 		le16_to_cpus(&buf);
261 		*((u16 *)data) = buf;
262 	} else if (4 == size) {
263 		u32 buf;
264 		ret = __ax88179_read_cmd(dev, cmd, value, index, size, &buf, 1);
265 		le32_to_cpus(&buf);
266 		*((u32 *)data) = buf;
267 	} else {
268 		ret = __ax88179_read_cmd(dev, cmd, value, index, size, data, 1);
269 	}
270 
271 	return ret;
272 }
273 
274 static int ax88179_write_cmd_nopm(struct usbnet *dev, u8 cmd, u16 value,
275 				  u16 index, u16 size, void *data)
276 {
277 	int ret;
278 
279 	if (2 == size) {
280 		u16 buf;
281 		buf = *((u16 *)data);
282 		cpu_to_le16s(&buf);
283 		ret = __ax88179_write_cmd(dev, cmd, value, index,
284 					  size, &buf, 1);
285 	} else {
286 		ret = __ax88179_write_cmd(dev, cmd, value, index,
287 					  size, data, 1);
288 	}
289 
290 	return ret;
291 }
292 
293 static int ax88179_read_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
294 			    u16 size, void *data)
295 {
296 	int ret;
297 
298 	if (2 == size) {
299 		u16 buf;
300 		ret = __ax88179_read_cmd(dev, cmd, value, index, size, &buf, 0);
301 		le16_to_cpus(&buf);
302 		*((u16 *)data) = buf;
303 	} else if (4 == size) {
304 		u32 buf;
305 		ret = __ax88179_read_cmd(dev, cmd, value, index, size, &buf, 0);
306 		le32_to_cpus(&buf);
307 		*((u32 *)data) = buf;
308 	} else {
309 		ret = __ax88179_read_cmd(dev, cmd, value, index, size, data, 0);
310 	}
311 
312 	return ret;
313 }
314 
315 static int ax88179_write_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
316 			     u16 size, void *data)
317 {
318 	int ret;
319 
320 	if (2 == size) {
321 		u16 buf;
322 		buf = *((u16 *)data);
323 		cpu_to_le16s(&buf);
324 		ret = __ax88179_write_cmd(dev, cmd, value, index,
325 					  size, &buf, 0);
326 	} else {
327 		ret = __ax88179_write_cmd(dev, cmd, value, index,
328 					  size, data, 0);
329 	}
330 
331 	return ret;
332 }
333 
334 static void ax88179_status(struct usbnet *dev, struct urb *urb)
335 {
336 	struct ax88179_int_data *event;
337 	u32 link;
338 
339 	if (urb->actual_length < 8)
340 		return;
341 
342 	event = urb->transfer_buffer;
343 	le32_to_cpus((void *)&event->intdata1);
344 
345 	link = (((__force u32)event->intdata1) & AX_INT_PPLS_LINK) >> 16;
346 
347 	if (netif_carrier_ok(dev->net) != link) {
348 		usbnet_link_change(dev, link, 1);
349 		netdev_info(dev->net, "ax88179 - Link status is: %d\n", link);
350 	}
351 }
352 
353 static int ax88179_mdio_read(struct net_device *netdev, int phy_id, int loc)
354 {
355 	struct usbnet *dev = netdev_priv(netdev);
356 	u16 res;
357 
358 	ax88179_read_cmd(dev, AX_ACCESS_PHY, phy_id, (__u16)loc, 2, &res);
359 	return res;
360 }
361 
362 static void ax88179_mdio_write(struct net_device *netdev, int phy_id, int loc,
363 			       int val)
364 {
365 	struct usbnet *dev = netdev_priv(netdev);
366 	u16 res = (u16) val;
367 
368 	ax88179_write_cmd(dev, AX_ACCESS_PHY, phy_id, (__u16)loc, 2, &res);
369 }
370 
371 static inline int ax88179_phy_mmd_indirect(struct usbnet *dev, u16 prtad,
372 					   u16 devad)
373 {
374 	u16 tmp16;
375 	int ret;
376 
377 	tmp16 = devad;
378 	ret = ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
379 				MII_MMD_CTRL, 2, &tmp16);
380 
381 	tmp16 = prtad;
382 	ret = ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
383 				MII_MMD_DATA, 2, &tmp16);
384 
385 	tmp16 = devad | MII_MMD_CTRL_NOINCR;
386 	ret = ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
387 				MII_MMD_CTRL, 2, &tmp16);
388 
389 	return ret;
390 }
391 
392 static int
393 ax88179_phy_read_mmd_indirect(struct usbnet *dev, u16 prtad, u16 devad)
394 {
395 	int ret;
396 	u16 tmp16;
397 
398 	ax88179_phy_mmd_indirect(dev, prtad, devad);
399 
400 	ret = ax88179_read_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
401 			       MII_MMD_DATA, 2, &tmp16);
402 	if (ret < 0)
403 		return ret;
404 
405 	return tmp16;
406 }
407 
408 static int
409 ax88179_phy_write_mmd_indirect(struct usbnet *dev, u16 prtad, u16 devad,
410 			       u16 data)
411 {
412 	int ret;
413 
414 	ax88179_phy_mmd_indirect(dev, prtad, devad);
415 
416 	ret = ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
417 				MII_MMD_DATA, 2, &data);
418 
419 	if (ret < 0)
420 		return ret;
421 
422 	return 0;
423 }
424 
425 static int ax88179_suspend(struct usb_interface *intf, pm_message_t message)
426 {
427 	struct usbnet *dev = usb_get_intfdata(intf);
428 	u16 tmp16;
429 	u8 tmp8;
430 
431 	usbnet_suspend(intf, message);
432 
433 	/* Disable RX path */
434 	ax88179_read_cmd_nopm(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
435 			      2, 2, &tmp16);
436 	tmp16 &= ~AX_MEDIUM_RECEIVE_EN;
437 	ax88179_write_cmd_nopm(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
438 			       2, 2, &tmp16);
439 
440 	/* Force bulk-in zero length */
441 	ax88179_read_cmd_nopm(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL,
442 			      2, 2, &tmp16);
443 
444 	tmp16 |= AX_PHYPWR_RSTCTL_BZ | AX_PHYPWR_RSTCTL_IPRL;
445 	ax88179_write_cmd_nopm(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL,
446 			       2, 2, &tmp16);
447 
448 	/* change clock */
449 	tmp8 = 0;
450 	ax88179_write_cmd_nopm(dev, AX_ACCESS_MAC, AX_CLK_SELECT, 1, 1, &tmp8);
451 
452 	/* Configure RX control register => stop operation */
453 	tmp16 = AX_RX_CTL_STOP;
454 	ax88179_write_cmd_nopm(dev, AX_ACCESS_MAC, AX_RX_CTL, 2, 2, &tmp16);
455 
456 	return 0;
457 }
458 
459 /* This function is used to enable the autodetach function. */
460 /* This function is determined by offset 0x43 of EEPROM */
461 static int ax88179_auto_detach(struct usbnet *dev, int in_pm)
462 {
463 	u16 tmp16;
464 	u8 tmp8;
465 	int (*fnr)(struct usbnet *, u8, u16, u16, u16, void *);
466 	int (*fnw)(struct usbnet *, u8, u16, u16, u16, void *);
467 
468 	if (!in_pm) {
469 		fnr = ax88179_read_cmd;
470 		fnw = ax88179_write_cmd;
471 	} else {
472 		fnr = ax88179_read_cmd_nopm;
473 		fnw = ax88179_write_cmd_nopm;
474 	}
475 
476 	if (fnr(dev, AX_ACCESS_EEPROM, 0x43, 1, 2, &tmp16) < 0)
477 		return 0;
478 
479 	if ((tmp16 == 0xFFFF) || (!(tmp16 & 0x0100)))
480 		return 0;
481 
482 	/* Enable Auto Detach bit */
483 	tmp8 = 0;
484 	fnr(dev, AX_ACCESS_MAC, AX_CLK_SELECT, 1, 1, &tmp8);
485 	tmp8 |= AX_CLK_SELECT_ULR;
486 	fnw(dev, AX_ACCESS_MAC, AX_CLK_SELECT, 1, 1, &tmp8);
487 
488 	fnr(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL, 2, 2, &tmp16);
489 	tmp16 |= AX_PHYPWR_RSTCTL_AT;
490 	fnw(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL, 2, 2, &tmp16);
491 
492 	return 0;
493 }
494 
495 static int ax88179_resume(struct usb_interface *intf)
496 {
497 	struct usbnet *dev = usb_get_intfdata(intf);
498 	u16 tmp16;
499 	u8 tmp8;
500 
501 	usbnet_link_change(dev, 0, 0);
502 
503 	/* Power up ethernet PHY */
504 	tmp16 = 0;
505 	ax88179_write_cmd_nopm(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL,
506 			       2, 2, &tmp16);
507 	udelay(1000);
508 
509 	tmp16 = AX_PHYPWR_RSTCTL_IPRL;
510 	ax88179_write_cmd_nopm(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL,
511 			       2, 2, &tmp16);
512 	msleep(200);
513 
514 	/* Ethernet PHY Auto Detach*/
515 	ax88179_auto_detach(dev, 1);
516 
517 	/* Enable clock */
518 	ax88179_read_cmd_nopm(dev, AX_ACCESS_MAC,  AX_CLK_SELECT, 1, 1, &tmp8);
519 	tmp8 |= AX_CLK_SELECT_ACS | AX_CLK_SELECT_BCS;
520 	ax88179_write_cmd_nopm(dev, AX_ACCESS_MAC, AX_CLK_SELECT, 1, 1, &tmp8);
521 	msleep(100);
522 
523 	/* Configure RX control register => start operation */
524 	tmp16 = AX_RX_CTL_DROPCRCERR | AX_RX_CTL_IPE | AX_RX_CTL_START |
525 		AX_RX_CTL_AP | AX_RX_CTL_AMALL | AX_RX_CTL_AB;
526 	ax88179_write_cmd_nopm(dev, AX_ACCESS_MAC, AX_RX_CTL, 2, 2, &tmp16);
527 
528 	return usbnet_resume(intf);
529 }
530 
531 static void
532 ax88179_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
533 {
534 	struct usbnet *dev = netdev_priv(net);
535 	u8 opt;
536 
537 	if (ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_MONITOR_MOD,
538 			     1, 1, &opt) < 0) {
539 		wolinfo->supported = 0;
540 		wolinfo->wolopts = 0;
541 		return;
542 	}
543 
544 	wolinfo->supported = WAKE_PHY | WAKE_MAGIC;
545 	wolinfo->wolopts = 0;
546 	if (opt & AX_MONITOR_MODE_RWLC)
547 		wolinfo->wolopts |= WAKE_PHY;
548 	if (opt & AX_MONITOR_MODE_RWMP)
549 		wolinfo->wolopts |= WAKE_MAGIC;
550 }
551 
552 static int
553 ax88179_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
554 {
555 	struct usbnet *dev = netdev_priv(net);
556 	u8 opt = 0;
557 
558 	if (wolinfo->wolopts & ~(WAKE_PHY | WAKE_MAGIC))
559 		return -EINVAL;
560 
561 	if (wolinfo->wolopts & WAKE_PHY)
562 		opt |= AX_MONITOR_MODE_RWLC;
563 	if (wolinfo->wolopts & WAKE_MAGIC)
564 		opt |= AX_MONITOR_MODE_RWMP;
565 
566 	if (ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_MONITOR_MOD,
567 			      1, 1, &opt) < 0)
568 		return -EINVAL;
569 
570 	return 0;
571 }
572 
573 static int ax88179_get_eeprom_len(struct net_device *net)
574 {
575 	return AX_EEPROM_LEN;
576 }
577 
578 static int
579 ax88179_get_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, last_word;
585 	int i, ret;
586 
587 	if (eeprom->len == 0)
588 		return -EINVAL;
589 
590 	eeprom->magic = AX88179_EEPROM_MAGIC;
591 
592 	first_word = eeprom->offset >> 1;
593 	last_word = (eeprom->offset + eeprom->len - 1) >> 1;
594 	eeprom_buff = kmalloc_array(last_word - first_word + 1, sizeof(u16),
595 				    GFP_KERNEL);
596 	if (!eeprom_buff)
597 		return -ENOMEM;
598 
599 	/* ax88179/178A returns 2 bytes from eeprom on read */
600 	for (i = first_word; i <= last_word; i++) {
601 		ret = __ax88179_read_cmd(dev, AX_ACCESS_EEPROM, i, 1, 2,
602 					 &eeprom_buff[i - first_word],
603 					 0);
604 		if (ret < 0) {
605 			kfree(eeprom_buff);
606 			return -EIO;
607 		}
608 	}
609 
610 	memcpy(data, (u8 *)eeprom_buff + (eeprom->offset & 1), eeprom->len);
611 	kfree(eeprom_buff);
612 	return 0;
613 }
614 
615 static int
616 ax88179_set_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom,
617 		   u8 *data)
618 {
619 	struct usbnet *dev = netdev_priv(net);
620 	u16 *eeprom_buff;
621 	int first_word;
622 	int last_word;
623 	int ret;
624 	int i;
625 
626 	netdev_dbg(net, "write EEPROM len %d, offset %d, magic 0x%x\n",
627 		   eeprom->len, eeprom->offset, eeprom->magic);
628 
629 	if (eeprom->len == 0)
630 		return -EINVAL;
631 
632 	if (eeprom->magic != AX88179_EEPROM_MAGIC)
633 		return -EINVAL;
634 
635 	first_word = eeprom->offset >> 1;
636 	last_word = (eeprom->offset + eeprom->len - 1) >> 1;
637 
638 	eeprom_buff = kmalloc_array(last_word - first_word + 1, sizeof(u16),
639 				    GFP_KERNEL);
640 	if (!eeprom_buff)
641 		return -ENOMEM;
642 
643 	/* align data to 16 bit boundaries, read the missing data from
644 	   the EEPROM */
645 	if (eeprom->offset & 1) {
646 		ret = ax88179_read_cmd(dev, AX_ACCESS_EEPROM, first_word, 1, 2,
647 				       &eeprom_buff[0]);
648 		if (ret < 0) {
649 			netdev_err(net, "Failed to read EEPROM at offset 0x%02x.\n", first_word);
650 			goto free;
651 		}
652 	}
653 
654 	if ((eeprom->offset + eeprom->len) & 1) {
655 		ret = ax88179_read_cmd(dev, AX_ACCESS_EEPROM, last_word, 1, 2,
656 				       &eeprom_buff[last_word - first_word]);
657 		if (ret < 0) {
658 			netdev_err(net, "Failed to read EEPROM at offset 0x%02x.\n", last_word);
659 			goto free;
660 		}
661 	}
662 
663 	memcpy((u8 *)eeprom_buff + (eeprom->offset & 1), data, eeprom->len);
664 
665 	for (i = first_word; i <= last_word; i++) {
666 		netdev_dbg(net, "write to EEPROM at offset 0x%02x, data 0x%04x\n",
667 			   i, eeprom_buff[i - first_word]);
668 		ret = ax88179_write_cmd(dev, AX_ACCESS_EEPROM, i, 1, 2,
669 					&eeprom_buff[i - first_word]);
670 		if (ret < 0) {
671 			netdev_err(net, "Failed to write EEPROM at offset 0x%02x.\n", i);
672 			goto free;
673 		}
674 		msleep(20);
675 	}
676 
677 	/* reload EEPROM data */
678 	ret = ax88179_write_cmd(dev, AX_RELOAD_EEPROM_EFUSE, 0x0000, 0, 0, NULL);
679 	if (ret < 0) {
680 		netdev_err(net, "Failed to reload EEPROM data\n");
681 		goto free;
682 	}
683 
684 	ret = 0;
685 free:
686 	kfree(eeprom_buff);
687 	return ret;
688 }
689 
690 static int ax88179_get_link_ksettings(struct net_device *net,
691 				      struct ethtool_link_ksettings *cmd)
692 {
693 	struct usbnet *dev = netdev_priv(net);
694 
695 	mii_ethtool_get_link_ksettings(&dev->mii, cmd);
696 
697 	return 0;
698 }
699 
700 static int ax88179_set_link_ksettings(struct net_device *net,
701 				      const struct ethtool_link_ksettings *cmd)
702 {
703 	struct usbnet *dev = netdev_priv(net);
704 	return mii_ethtool_set_link_ksettings(&dev->mii, cmd);
705 }
706 
707 static int
708 ax88179_ethtool_get_eee(struct usbnet *dev, struct ethtool_eee *data)
709 {
710 	int val;
711 
712 	/* Get Supported EEE */
713 	val = ax88179_phy_read_mmd_indirect(dev, MDIO_PCS_EEE_ABLE,
714 					    MDIO_MMD_PCS);
715 	if (val < 0)
716 		return val;
717 	data->supported = mmd_eee_cap_to_ethtool_sup_t(val);
718 
719 	/* Get advertisement EEE */
720 	val = ax88179_phy_read_mmd_indirect(dev, MDIO_AN_EEE_ADV,
721 					    MDIO_MMD_AN);
722 	if (val < 0)
723 		return val;
724 	data->advertised = mmd_eee_adv_to_ethtool_adv_t(val);
725 
726 	/* Get LP advertisement EEE */
727 	val = ax88179_phy_read_mmd_indirect(dev, MDIO_AN_EEE_LPABLE,
728 					    MDIO_MMD_AN);
729 	if (val < 0)
730 		return val;
731 	data->lp_advertised = mmd_eee_adv_to_ethtool_adv_t(val);
732 
733 	return 0;
734 }
735 
736 static int
737 ax88179_ethtool_set_eee(struct usbnet *dev, struct ethtool_eee *data)
738 {
739 	u16 tmp16 = ethtool_adv_to_mmd_eee_adv_t(data->advertised);
740 
741 	return ax88179_phy_write_mmd_indirect(dev, MDIO_AN_EEE_ADV,
742 					      MDIO_MMD_AN, tmp16);
743 }
744 
745 static int ax88179_chk_eee(struct usbnet *dev)
746 {
747 	struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET };
748 	struct ax88179_data *priv = (struct ax88179_data *)dev->data;
749 
750 	mii_ethtool_gset(&dev->mii, &ecmd);
751 
752 	if (ecmd.duplex & DUPLEX_FULL) {
753 		int eee_lp, eee_cap, eee_adv;
754 		u32 lp, cap, adv, supported = 0;
755 
756 		eee_cap = ax88179_phy_read_mmd_indirect(dev,
757 							MDIO_PCS_EEE_ABLE,
758 							MDIO_MMD_PCS);
759 		if (eee_cap < 0) {
760 			priv->eee_active = 0;
761 			return false;
762 		}
763 
764 		cap = mmd_eee_cap_to_ethtool_sup_t(eee_cap);
765 		if (!cap) {
766 			priv->eee_active = 0;
767 			return false;
768 		}
769 
770 		eee_lp = ax88179_phy_read_mmd_indirect(dev,
771 						       MDIO_AN_EEE_LPABLE,
772 						       MDIO_MMD_AN);
773 		if (eee_lp < 0) {
774 			priv->eee_active = 0;
775 			return false;
776 		}
777 
778 		eee_adv = ax88179_phy_read_mmd_indirect(dev,
779 							MDIO_AN_EEE_ADV,
780 							MDIO_MMD_AN);
781 
782 		if (eee_adv < 0) {
783 			priv->eee_active = 0;
784 			return false;
785 		}
786 
787 		adv = mmd_eee_adv_to_ethtool_adv_t(eee_adv);
788 		lp = mmd_eee_adv_to_ethtool_adv_t(eee_lp);
789 		supported = (ecmd.speed == SPEED_1000) ?
790 			     SUPPORTED_1000baseT_Full :
791 			     SUPPORTED_100baseT_Full;
792 
793 		if (!(lp & adv & supported)) {
794 			priv->eee_active = 0;
795 			return false;
796 		}
797 
798 		priv->eee_active = 1;
799 		return true;
800 	}
801 
802 	priv->eee_active = 0;
803 	return false;
804 }
805 
806 static void ax88179_disable_eee(struct usbnet *dev)
807 {
808 	u16 tmp16;
809 
810 	tmp16 = GMII_PHY_PGSEL_PAGE3;
811 	ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
812 			  GMII_PHY_PAGE_SELECT, 2, &tmp16);
813 
814 	tmp16 = 0x3246;
815 	ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
816 			  MII_PHYADDR, 2, &tmp16);
817 
818 	tmp16 = GMII_PHY_PGSEL_PAGE0;
819 	ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
820 			  GMII_PHY_PAGE_SELECT, 2, &tmp16);
821 }
822 
823 static void ax88179_enable_eee(struct usbnet *dev)
824 {
825 	u16 tmp16;
826 
827 	tmp16 = GMII_PHY_PGSEL_PAGE3;
828 	ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
829 			  GMII_PHY_PAGE_SELECT, 2, &tmp16);
830 
831 	tmp16 = 0x3247;
832 	ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
833 			  MII_PHYADDR, 2, &tmp16);
834 
835 	tmp16 = GMII_PHY_PGSEL_PAGE5;
836 	ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
837 			  GMII_PHY_PAGE_SELECT, 2, &tmp16);
838 
839 	tmp16 = 0x0680;
840 	ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
841 			  MII_BMSR, 2, &tmp16);
842 
843 	tmp16 = GMII_PHY_PGSEL_PAGE0;
844 	ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
845 			  GMII_PHY_PAGE_SELECT, 2, &tmp16);
846 }
847 
848 static int ax88179_get_eee(struct net_device *net, struct ethtool_eee *edata)
849 {
850 	struct usbnet *dev = netdev_priv(net);
851 	struct ax88179_data *priv = (struct ax88179_data *)dev->data;
852 
853 	edata->eee_enabled = priv->eee_enabled;
854 	edata->eee_active = priv->eee_active;
855 
856 	return ax88179_ethtool_get_eee(dev, edata);
857 }
858 
859 static int ax88179_set_eee(struct net_device *net, struct ethtool_eee *edata)
860 {
861 	struct usbnet *dev = netdev_priv(net);
862 	struct ax88179_data *priv = (struct ax88179_data *)dev->data;
863 	int ret;
864 
865 	priv->eee_enabled = edata->eee_enabled;
866 	if (!priv->eee_enabled) {
867 		ax88179_disable_eee(dev);
868 	} else {
869 		priv->eee_enabled = ax88179_chk_eee(dev);
870 		if (!priv->eee_enabled)
871 			return -EOPNOTSUPP;
872 
873 		ax88179_enable_eee(dev);
874 	}
875 
876 	ret = ax88179_ethtool_set_eee(dev, edata);
877 	if (ret)
878 		return ret;
879 
880 	mii_nway_restart(&dev->mii);
881 
882 	usbnet_link_change(dev, 0, 0);
883 
884 	return ret;
885 }
886 
887 static int ax88179_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
888 {
889 	struct usbnet *dev = netdev_priv(net);
890 	return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
891 }
892 
893 static const struct ethtool_ops ax88179_ethtool_ops = {
894 	.get_link		= ethtool_op_get_link,
895 	.get_msglevel		= usbnet_get_msglevel,
896 	.set_msglevel		= usbnet_set_msglevel,
897 	.get_wol		= ax88179_get_wol,
898 	.set_wol		= ax88179_set_wol,
899 	.get_eeprom_len		= ax88179_get_eeprom_len,
900 	.get_eeprom		= ax88179_get_eeprom,
901 	.set_eeprom		= ax88179_set_eeprom,
902 	.get_eee		= ax88179_get_eee,
903 	.set_eee		= ax88179_set_eee,
904 	.nway_reset		= usbnet_nway_reset,
905 	.get_link_ksettings	= ax88179_get_link_ksettings,
906 	.set_link_ksettings	= ax88179_set_link_ksettings,
907 	.get_ts_info		= ethtool_op_get_ts_info,
908 };
909 
910 static void ax88179_set_multicast(struct net_device *net)
911 {
912 	struct usbnet *dev = netdev_priv(net);
913 	struct ax88179_data *data = (struct ax88179_data *)dev->data;
914 	u8 *m_filter = ((u8 *)dev->data) + 12;
915 
916 	data->rxctl = (AX_RX_CTL_START | AX_RX_CTL_AB | AX_RX_CTL_IPE);
917 
918 	if (net->flags & IFF_PROMISC) {
919 		data->rxctl |= AX_RX_CTL_PRO;
920 	} else if (net->flags & IFF_ALLMULTI ||
921 		   netdev_mc_count(net) > AX_MAX_MCAST) {
922 		data->rxctl |= AX_RX_CTL_AMALL;
923 	} else if (netdev_mc_empty(net)) {
924 		/* just broadcast and directed */
925 	} else {
926 		/* We use the 20 byte dev->data for our 8 byte filter buffer
927 		 * to avoid allocating memory that is tricky to free later
928 		 */
929 		u32 crc_bits;
930 		struct netdev_hw_addr *ha;
931 
932 		memset(m_filter, 0, AX_MCAST_FLTSIZE);
933 
934 		netdev_for_each_mc_addr(ha, net) {
935 			crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26;
936 			*(m_filter + (crc_bits >> 3)) |= (1 << (crc_bits & 7));
937 		}
938 
939 		ax88179_write_cmd_async(dev, AX_ACCESS_MAC, AX_MULFLTARY,
940 					AX_MCAST_FLTSIZE, AX_MCAST_FLTSIZE,
941 					m_filter);
942 
943 		data->rxctl |= AX_RX_CTL_AM;
944 	}
945 
946 	ax88179_write_cmd_async(dev, AX_ACCESS_MAC, AX_RX_CTL,
947 				2, 2, &data->rxctl);
948 }
949 
950 static int
951 ax88179_set_features(struct net_device *net, netdev_features_t features)
952 {
953 	u8 tmp;
954 	struct usbnet *dev = netdev_priv(net);
955 	netdev_features_t changed = net->features ^ features;
956 
957 	if (changed & NETIF_F_IP_CSUM) {
958 		ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_TXCOE_CTL, 1, 1, &tmp);
959 		tmp ^= AX_TXCOE_TCP | AX_TXCOE_UDP;
960 		ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_TXCOE_CTL, 1, 1, &tmp);
961 	}
962 
963 	if (changed & NETIF_F_IPV6_CSUM) {
964 		ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_TXCOE_CTL, 1, 1, &tmp);
965 		tmp ^= AX_TXCOE_TCPV6 | AX_TXCOE_UDPV6;
966 		ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_TXCOE_CTL, 1, 1, &tmp);
967 	}
968 
969 	if (changed & NETIF_F_RXCSUM) {
970 		ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_RXCOE_CTL, 1, 1, &tmp);
971 		tmp ^= AX_RXCOE_IP | AX_RXCOE_TCP | AX_RXCOE_UDP |
972 		       AX_RXCOE_TCPV6 | AX_RXCOE_UDPV6;
973 		ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RXCOE_CTL, 1, 1, &tmp);
974 	}
975 
976 	return 0;
977 }
978 
979 static int ax88179_change_mtu(struct net_device *net, int new_mtu)
980 {
981 	struct usbnet *dev = netdev_priv(net);
982 	u16 tmp16;
983 
984 	net->mtu = new_mtu;
985 	dev->hard_mtu = net->mtu + net->hard_header_len;
986 
987 	if (net->mtu > 1500) {
988 		ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
989 				 2, 2, &tmp16);
990 		tmp16 |= AX_MEDIUM_JUMBO_EN;
991 		ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
992 				  2, 2, &tmp16);
993 	} else {
994 		ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
995 				 2, 2, &tmp16);
996 		tmp16 &= ~AX_MEDIUM_JUMBO_EN;
997 		ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
998 				  2, 2, &tmp16);
999 	}
1000 
1001 	/* max qlen depend on hard_mtu and rx_urb_size */
1002 	usbnet_update_max_qlen(dev);
1003 
1004 	return 0;
1005 }
1006 
1007 static int ax88179_set_mac_addr(struct net_device *net, void *p)
1008 {
1009 	struct usbnet *dev = netdev_priv(net);
1010 	struct sockaddr *addr = p;
1011 	int ret;
1012 
1013 	if (netif_running(net))
1014 		return -EBUSY;
1015 	if (!is_valid_ether_addr(addr->sa_data))
1016 		return -EADDRNOTAVAIL;
1017 
1018 	memcpy(net->dev_addr, addr->sa_data, ETH_ALEN);
1019 
1020 	/* Set the MAC address */
1021 	ret = ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_NODE_ID, ETH_ALEN,
1022 				 ETH_ALEN, net->dev_addr);
1023 	if (ret < 0)
1024 		return ret;
1025 
1026 	return 0;
1027 }
1028 
1029 static const struct net_device_ops ax88179_netdev_ops = {
1030 	.ndo_open		= usbnet_open,
1031 	.ndo_stop		= usbnet_stop,
1032 	.ndo_start_xmit		= usbnet_start_xmit,
1033 	.ndo_tx_timeout		= usbnet_tx_timeout,
1034 	.ndo_get_stats64	= dev_get_tstats64,
1035 	.ndo_change_mtu		= ax88179_change_mtu,
1036 	.ndo_set_mac_address	= ax88179_set_mac_addr,
1037 	.ndo_validate_addr	= eth_validate_addr,
1038 	.ndo_do_ioctl		= ax88179_ioctl,
1039 	.ndo_set_rx_mode	= ax88179_set_multicast,
1040 	.ndo_set_features	= ax88179_set_features,
1041 };
1042 
1043 static int ax88179_check_eeprom(struct usbnet *dev)
1044 {
1045 	u8 i, buf, eeprom[20];
1046 	u16 csum, delay = HZ / 10;
1047 	unsigned long jtimeout;
1048 
1049 	/* Read EEPROM content */
1050 	for (i = 0; i < 6; i++) {
1051 		buf = i;
1052 		if (ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_SROM_ADDR,
1053 				      1, 1, &buf) < 0)
1054 			return -EINVAL;
1055 
1056 		buf = EEP_RD;
1057 		if (ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_SROM_CMD,
1058 				      1, 1, &buf) < 0)
1059 			return -EINVAL;
1060 
1061 		jtimeout = jiffies + delay;
1062 		do {
1063 			ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_SROM_CMD,
1064 					 1, 1, &buf);
1065 
1066 			if (time_after(jiffies, jtimeout))
1067 				return -EINVAL;
1068 
1069 		} while (buf & EEP_BUSY);
1070 
1071 		__ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_SROM_DATA_LOW,
1072 				   2, 2, &eeprom[i * 2], 0);
1073 
1074 		if ((i == 0) && (eeprom[0] == 0xFF))
1075 			return -EINVAL;
1076 	}
1077 
1078 	csum = eeprom[6] + eeprom[7] + eeprom[8] + eeprom[9];
1079 	csum = (csum >> 8) + (csum & 0xff);
1080 	if ((csum + eeprom[10]) != 0xff)
1081 		return -EINVAL;
1082 
1083 	return 0;
1084 }
1085 
1086 static int ax88179_check_efuse(struct usbnet *dev, u16 *ledmode)
1087 {
1088 	u8	i;
1089 	u8	efuse[64];
1090 	u16	csum = 0;
1091 
1092 	if (ax88179_read_cmd(dev, AX_ACCESS_EFUS, 0, 64, 64, efuse) < 0)
1093 		return -EINVAL;
1094 
1095 	if (*efuse == 0xFF)
1096 		return -EINVAL;
1097 
1098 	for (i = 0; i < 64; i++)
1099 		csum = csum + efuse[i];
1100 
1101 	while (csum > 255)
1102 		csum = (csum & 0x00FF) + ((csum >> 8) & 0x00FF);
1103 
1104 	if (csum != 0xFF)
1105 		return -EINVAL;
1106 
1107 	*ledmode = (efuse[51] << 8) | efuse[52];
1108 
1109 	return 0;
1110 }
1111 
1112 static int ax88179_convert_old_led(struct usbnet *dev, u16 *ledvalue)
1113 {
1114 	u16 led;
1115 
1116 	/* Loaded the old eFuse LED Mode */
1117 	if (ax88179_read_cmd(dev, AX_ACCESS_EEPROM, 0x3C, 1, 2, &led) < 0)
1118 		return -EINVAL;
1119 
1120 	led >>= 8;
1121 	switch (led) {
1122 	case 0xFF:
1123 		led = LED0_ACTIVE | LED1_LINK_10 | LED1_LINK_100 |
1124 		      LED1_LINK_1000 | LED2_ACTIVE | LED2_LINK_10 |
1125 		      LED2_LINK_100 | LED2_LINK_1000 | LED_VALID;
1126 		break;
1127 	case 0xFE:
1128 		led = LED0_ACTIVE | LED1_LINK_1000 | LED2_LINK_100 | LED_VALID;
1129 		break;
1130 	case 0xFD:
1131 		led = LED0_ACTIVE | LED1_LINK_1000 | LED2_LINK_100 |
1132 		      LED2_LINK_10 | LED_VALID;
1133 		break;
1134 	case 0xFC:
1135 		led = LED0_ACTIVE | LED1_ACTIVE | LED1_LINK_1000 | LED2_ACTIVE |
1136 		      LED2_LINK_100 | LED2_LINK_10 | LED_VALID;
1137 		break;
1138 	default:
1139 		led = LED0_ACTIVE | LED1_LINK_10 | LED1_LINK_100 |
1140 		      LED1_LINK_1000 | LED2_ACTIVE | LED2_LINK_10 |
1141 		      LED2_LINK_100 | LED2_LINK_1000 | LED_VALID;
1142 		break;
1143 	}
1144 
1145 	*ledvalue = led;
1146 
1147 	return 0;
1148 }
1149 
1150 static int ax88179_led_setting(struct usbnet *dev)
1151 {
1152 	u8 ledfd, value = 0;
1153 	u16 tmp, ledact, ledlink, ledvalue = 0, delay = HZ / 10;
1154 	unsigned long jtimeout;
1155 
1156 	/* Check AX88179 version. UA1 or UA2*/
1157 	ax88179_read_cmd(dev, AX_ACCESS_MAC, GENERAL_STATUS, 1, 1, &value);
1158 
1159 	if (!(value & AX_SECLD)) {	/* UA1 */
1160 		value = AX_GPIO_CTRL_GPIO3EN | AX_GPIO_CTRL_GPIO2EN |
1161 			AX_GPIO_CTRL_GPIO1EN;
1162 		if (ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_GPIO_CTRL,
1163 				      1, 1, &value) < 0)
1164 			return -EINVAL;
1165 	}
1166 
1167 	/* Check EEPROM */
1168 	if (!ax88179_check_eeprom(dev)) {
1169 		value = 0x42;
1170 		if (ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_SROM_ADDR,
1171 				      1, 1, &value) < 0)
1172 			return -EINVAL;
1173 
1174 		value = EEP_RD;
1175 		if (ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_SROM_CMD,
1176 				      1, 1, &value) < 0)
1177 			return -EINVAL;
1178 
1179 		jtimeout = jiffies + delay;
1180 		do {
1181 			ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_SROM_CMD,
1182 					 1, 1, &value);
1183 
1184 			if (time_after(jiffies, jtimeout))
1185 				return -EINVAL;
1186 
1187 		} while (value & EEP_BUSY);
1188 
1189 		ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_SROM_DATA_HIGH,
1190 				 1, 1, &value);
1191 		ledvalue = (value << 8);
1192 
1193 		ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_SROM_DATA_LOW,
1194 				 1, 1, &value);
1195 		ledvalue |= value;
1196 
1197 		/* load internal ROM for defaule setting */
1198 		if ((ledvalue == 0xFFFF) || ((ledvalue & LED_VALID) == 0))
1199 			ax88179_convert_old_led(dev, &ledvalue);
1200 
1201 	} else if (!ax88179_check_efuse(dev, &ledvalue)) {
1202 		if ((ledvalue == 0xFFFF) || ((ledvalue & LED_VALID) == 0))
1203 			ax88179_convert_old_led(dev, &ledvalue);
1204 	} else {
1205 		ax88179_convert_old_led(dev, &ledvalue);
1206 	}
1207 
1208 	tmp = GMII_PHY_PGSEL_EXT;
1209 	ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
1210 			  GMII_PHY_PAGE_SELECT, 2, &tmp);
1211 
1212 	tmp = 0x2c;
1213 	ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
1214 			  GMII_PHYPAGE, 2, &tmp);
1215 
1216 	ax88179_read_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
1217 			 GMII_LED_ACT, 2, &ledact);
1218 
1219 	ax88179_read_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
1220 			 GMII_LED_LINK, 2, &ledlink);
1221 
1222 	ledact &= GMII_LED_ACTIVE_MASK;
1223 	ledlink &= GMII_LED_LINK_MASK;
1224 
1225 	if (ledvalue & LED0_ACTIVE)
1226 		ledact |= GMII_LED0_ACTIVE;
1227 
1228 	if (ledvalue & LED1_ACTIVE)
1229 		ledact |= GMII_LED1_ACTIVE;
1230 
1231 	if (ledvalue & LED2_ACTIVE)
1232 		ledact |= GMII_LED2_ACTIVE;
1233 
1234 	if (ledvalue & LED0_LINK_10)
1235 		ledlink |= GMII_LED0_LINK_10;
1236 
1237 	if (ledvalue & LED1_LINK_10)
1238 		ledlink |= GMII_LED1_LINK_10;
1239 
1240 	if (ledvalue & LED2_LINK_10)
1241 		ledlink |= GMII_LED2_LINK_10;
1242 
1243 	if (ledvalue & LED0_LINK_100)
1244 		ledlink |= GMII_LED0_LINK_100;
1245 
1246 	if (ledvalue & LED1_LINK_100)
1247 		ledlink |= GMII_LED1_LINK_100;
1248 
1249 	if (ledvalue & LED2_LINK_100)
1250 		ledlink |= GMII_LED2_LINK_100;
1251 
1252 	if (ledvalue & LED0_LINK_1000)
1253 		ledlink |= GMII_LED0_LINK_1000;
1254 
1255 	if (ledvalue & LED1_LINK_1000)
1256 		ledlink |= GMII_LED1_LINK_1000;
1257 
1258 	if (ledvalue & LED2_LINK_1000)
1259 		ledlink |= GMII_LED2_LINK_1000;
1260 
1261 	tmp = ledact;
1262 	ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
1263 			  GMII_LED_ACT, 2, &tmp);
1264 
1265 	tmp = ledlink;
1266 	ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
1267 			  GMII_LED_LINK, 2, &tmp);
1268 
1269 	tmp = GMII_PHY_PGSEL_PAGE0;
1270 	ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
1271 			  GMII_PHY_PAGE_SELECT, 2, &tmp);
1272 
1273 	/* LED full duplex setting */
1274 	ledfd = 0;
1275 	if (ledvalue & LED0_FD)
1276 		ledfd |= 0x01;
1277 	else if ((ledvalue & LED0_USB3_MASK) == 0)
1278 		ledfd |= 0x02;
1279 
1280 	if (ledvalue & LED1_FD)
1281 		ledfd |= 0x04;
1282 	else if ((ledvalue & LED1_USB3_MASK) == 0)
1283 		ledfd |= 0x08;
1284 
1285 	if (ledvalue & LED2_FD)
1286 		ledfd |= 0x10;
1287 	else if ((ledvalue & LED2_USB3_MASK) == 0)
1288 		ledfd |= 0x20;
1289 
1290 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_LEDCTRL, 1, 1, &ledfd);
1291 
1292 	return 0;
1293 }
1294 
1295 static void ax88179_get_mac_addr(struct usbnet *dev)
1296 {
1297 	u8 mac[ETH_ALEN];
1298 
1299 	/* Maybe the boot loader passed the MAC address via device tree */
1300 	if (!eth_platform_get_mac_address(&dev->udev->dev, mac)) {
1301 		netif_dbg(dev, ifup, dev->net,
1302 			  "MAC address read from device tree");
1303 	} else {
1304 		ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_NODE_ID, ETH_ALEN,
1305 				 ETH_ALEN, mac);
1306 		netif_dbg(dev, ifup, dev->net,
1307 			  "MAC address read from ASIX chip");
1308 	}
1309 
1310 	if (is_valid_ether_addr(mac)) {
1311 		memcpy(dev->net->dev_addr, mac, ETH_ALEN);
1312 	} else {
1313 		netdev_info(dev->net, "invalid MAC address, using random\n");
1314 		eth_hw_addr_random(dev->net);
1315 	}
1316 
1317 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_NODE_ID, ETH_ALEN, ETH_ALEN,
1318 			  dev->net->dev_addr);
1319 }
1320 
1321 static int ax88179_bind(struct usbnet *dev, struct usb_interface *intf)
1322 {
1323 	u8 buf[5];
1324 	u16 *tmp16;
1325 	u8 *tmp;
1326 	struct ax88179_data *ax179_data = (struct ax88179_data *)dev->data;
1327 	struct ethtool_eee eee_data;
1328 
1329 	usbnet_get_endpoints(dev, intf);
1330 
1331 	tmp16 = (u16 *)buf;
1332 	tmp = (u8 *)buf;
1333 
1334 	memset(ax179_data, 0, sizeof(*ax179_data));
1335 
1336 	/* Power up ethernet PHY */
1337 	*tmp16 = 0;
1338 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL, 2, 2, tmp16);
1339 	*tmp16 = AX_PHYPWR_RSTCTL_IPRL;
1340 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL, 2, 2, tmp16);
1341 	msleep(200);
1342 
1343 	*tmp = AX_CLK_SELECT_ACS | AX_CLK_SELECT_BCS;
1344 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_CLK_SELECT, 1, 1, tmp);
1345 	msleep(100);
1346 
1347 	/* Read MAC address from DTB or asix chip */
1348 	ax88179_get_mac_addr(dev);
1349 	memcpy(dev->net->perm_addr, dev->net->dev_addr, ETH_ALEN);
1350 
1351 	/* RX bulk configuration */
1352 	memcpy(tmp, &AX88179_BULKIN_SIZE[0], 5);
1353 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RX_BULKIN_QCTRL, 5, 5, tmp);
1354 
1355 	dev->rx_urb_size = 1024 * 20;
1356 
1357 	*tmp = 0x34;
1358 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PAUSE_WATERLVL_LOW, 1, 1, tmp);
1359 
1360 	*tmp = 0x52;
1361 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PAUSE_WATERLVL_HIGH,
1362 			  1, 1, tmp);
1363 
1364 	dev->net->netdev_ops = &ax88179_netdev_ops;
1365 	dev->net->ethtool_ops = &ax88179_ethtool_ops;
1366 	dev->net->needed_headroom = 8;
1367 	dev->net->max_mtu = 4088;
1368 
1369 	/* Initialize MII structure */
1370 	dev->mii.dev = dev->net;
1371 	dev->mii.mdio_read = ax88179_mdio_read;
1372 	dev->mii.mdio_write = ax88179_mdio_write;
1373 	dev->mii.phy_id_mask = 0xff;
1374 	dev->mii.reg_num_mask = 0xff;
1375 	dev->mii.phy_id = 0x03;
1376 	dev->mii.supports_gmii = 1;
1377 
1378 	dev->net->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
1379 			      NETIF_F_RXCSUM;
1380 
1381 	dev->net->hw_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
1382 				 NETIF_F_RXCSUM;
1383 
1384 	/* Enable checksum offload */
1385 	*tmp = AX_RXCOE_IP | AX_RXCOE_TCP | AX_RXCOE_UDP |
1386 	       AX_RXCOE_TCPV6 | AX_RXCOE_UDPV6;
1387 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RXCOE_CTL, 1, 1, tmp);
1388 
1389 	*tmp = AX_TXCOE_IP | AX_TXCOE_TCP | AX_TXCOE_UDP |
1390 	       AX_TXCOE_TCPV6 | AX_TXCOE_UDPV6;
1391 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_TXCOE_CTL, 1, 1, tmp);
1392 
1393 	/* Configure RX control register => start operation */
1394 	*tmp16 = AX_RX_CTL_DROPCRCERR | AX_RX_CTL_IPE | AX_RX_CTL_START |
1395 		 AX_RX_CTL_AP | AX_RX_CTL_AMALL | AX_RX_CTL_AB;
1396 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RX_CTL, 2, 2, tmp16);
1397 
1398 	*tmp = AX_MONITOR_MODE_PMETYPE | AX_MONITOR_MODE_PMEPOL |
1399 	       AX_MONITOR_MODE_RWMP;
1400 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_MONITOR_MOD, 1, 1, tmp);
1401 
1402 	/* Configure default medium type => giga */
1403 	*tmp16 = AX_MEDIUM_RECEIVE_EN | AX_MEDIUM_TXFLOW_CTRLEN |
1404 		 AX_MEDIUM_RXFLOW_CTRLEN | AX_MEDIUM_FULL_DUPLEX |
1405 		 AX_MEDIUM_GIGAMODE;
1406 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
1407 			  2, 2, tmp16);
1408 
1409 	ax88179_led_setting(dev);
1410 
1411 	ax179_data->eee_enabled = 0;
1412 	ax179_data->eee_active = 0;
1413 
1414 	ax88179_disable_eee(dev);
1415 
1416 	ax88179_ethtool_get_eee(dev, &eee_data);
1417 	eee_data.advertised = 0;
1418 	ax88179_ethtool_set_eee(dev, &eee_data);
1419 
1420 	/* Restart autoneg */
1421 	mii_nway_restart(&dev->mii);
1422 
1423 	usbnet_link_change(dev, 0, 0);
1424 
1425 	return 0;
1426 }
1427 
1428 static void ax88179_unbind(struct usbnet *dev, struct usb_interface *intf)
1429 {
1430 	u16 tmp16;
1431 
1432 	/* Configure RX control register => stop operation */
1433 	tmp16 = AX_RX_CTL_STOP;
1434 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RX_CTL, 2, 2, &tmp16);
1435 
1436 	tmp16 = 0;
1437 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_CLK_SELECT, 1, 1, &tmp16);
1438 
1439 	/* Power down ethernet PHY */
1440 	tmp16 = 0;
1441 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL, 2, 2, &tmp16);
1442 }
1443 
1444 static void
1445 ax88179_rx_checksum(struct sk_buff *skb, u32 *pkt_hdr)
1446 {
1447 	skb->ip_summed = CHECKSUM_NONE;
1448 
1449 	/* checksum error bit is set */
1450 	if ((*pkt_hdr & AX_RXHDR_L3CSUM_ERR) ||
1451 	    (*pkt_hdr & AX_RXHDR_L4CSUM_ERR))
1452 		return;
1453 
1454 	/* It must be a TCP or UDP packet with a valid checksum */
1455 	if (((*pkt_hdr & AX_RXHDR_L4_TYPE_MASK) == AX_RXHDR_L4_TYPE_TCP) ||
1456 	    ((*pkt_hdr & AX_RXHDR_L4_TYPE_MASK) == AX_RXHDR_L4_TYPE_UDP))
1457 		skb->ip_summed = CHECKSUM_UNNECESSARY;
1458 }
1459 
1460 static int ax88179_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
1461 {
1462 	struct sk_buff *ax_skb;
1463 	int pkt_cnt;
1464 	u32 rx_hdr;
1465 	u16 hdr_off;
1466 	u32 *pkt_hdr;
1467 
1468 	/* This check is no longer done by usbnet */
1469 	if (skb->len < dev->net->hard_header_len)
1470 		return 0;
1471 
1472 	skb_trim(skb, skb->len - 4);
1473 	rx_hdr = get_unaligned_le32(skb_tail_pointer(skb));
1474 
1475 	pkt_cnt = (u16)rx_hdr;
1476 	hdr_off = (u16)(rx_hdr >> 16);
1477 	pkt_hdr = (u32 *)(skb->data + hdr_off);
1478 
1479 	while (pkt_cnt--) {
1480 		u16 pkt_len;
1481 
1482 		le32_to_cpus(pkt_hdr);
1483 		pkt_len = (*pkt_hdr >> 16) & 0x1fff;
1484 
1485 		/* Check CRC or runt packet */
1486 		if ((*pkt_hdr & AX_RXHDR_CRC_ERR) ||
1487 		    (*pkt_hdr & AX_RXHDR_DROP_ERR)) {
1488 			skb_pull(skb, (pkt_len + 7) & 0xFFF8);
1489 			pkt_hdr++;
1490 			continue;
1491 		}
1492 
1493 		if (pkt_cnt == 0) {
1494 			skb->len = pkt_len;
1495 			/* Skip IP alignment pseudo header */
1496 			skb_pull(skb, 2);
1497 			skb_set_tail_pointer(skb, skb->len);
1498 			skb->truesize = pkt_len + sizeof(struct sk_buff);
1499 			ax88179_rx_checksum(skb, pkt_hdr);
1500 			return 1;
1501 		}
1502 
1503 		ax_skb = skb_clone(skb, GFP_ATOMIC);
1504 		if (ax_skb) {
1505 			ax_skb->len = pkt_len;
1506 			/* Skip IP alignment pseudo header */
1507 			skb_pull(ax_skb, 2);
1508 			skb_set_tail_pointer(ax_skb, ax_skb->len);
1509 			ax_skb->truesize = pkt_len + sizeof(struct sk_buff);
1510 			ax88179_rx_checksum(ax_skb, pkt_hdr);
1511 			usbnet_skb_return(dev, ax_skb);
1512 		} else {
1513 			return 0;
1514 		}
1515 
1516 		skb_pull(skb, (pkt_len + 7) & 0xFFF8);
1517 		pkt_hdr++;
1518 	}
1519 	return 1;
1520 }
1521 
1522 static struct sk_buff *
1523 ax88179_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags)
1524 {
1525 	u32 tx_hdr1, tx_hdr2;
1526 	int frame_size = dev->maxpacket;
1527 	int mss = skb_shinfo(skb)->gso_size;
1528 	int headroom;
1529 	void *ptr;
1530 
1531 	tx_hdr1 = skb->len;
1532 	tx_hdr2 = mss;
1533 	if (((skb->len + 8) % frame_size) == 0)
1534 		tx_hdr2 |= 0x80008000;	/* Enable padding */
1535 
1536 	headroom = skb_headroom(skb) - 8;
1537 
1538 	if ((skb_header_cloned(skb) || headroom < 0) &&
1539 	    pskb_expand_head(skb, headroom < 0 ? 8 : 0, 0, GFP_ATOMIC)) {
1540 		dev_kfree_skb_any(skb);
1541 		return NULL;
1542 	}
1543 
1544 	ptr = skb_push(skb, 8);
1545 	put_unaligned_le32(tx_hdr1, ptr);
1546 	put_unaligned_le32(tx_hdr2, ptr + 4);
1547 
1548 	return skb;
1549 }
1550 
1551 static int ax88179_link_reset(struct usbnet *dev)
1552 {
1553 	struct ax88179_data *ax179_data = (struct ax88179_data *)dev->data;
1554 	u8 tmp[5], link_sts;
1555 	u16 mode, tmp16, delay = HZ / 10;
1556 	u32 tmp32 = 0x40000000;
1557 	unsigned long jtimeout;
1558 
1559 	jtimeout = jiffies + delay;
1560 	while (tmp32 & 0x40000000) {
1561 		mode = 0;
1562 		ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RX_CTL, 2, 2, &mode);
1563 		ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RX_CTL, 2, 2,
1564 				  &ax179_data->rxctl);
1565 
1566 		/*link up, check the usb device control TX FIFO full or empty*/
1567 		ax88179_read_cmd(dev, 0x81, 0x8c, 0, 4, &tmp32);
1568 
1569 		if (time_after(jiffies, jtimeout))
1570 			return 0;
1571 	}
1572 
1573 	mode = AX_MEDIUM_RECEIVE_EN | AX_MEDIUM_TXFLOW_CTRLEN |
1574 	       AX_MEDIUM_RXFLOW_CTRLEN;
1575 
1576 	ax88179_read_cmd(dev, AX_ACCESS_MAC, PHYSICAL_LINK_STATUS,
1577 			 1, 1, &link_sts);
1578 
1579 	ax88179_read_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
1580 			 GMII_PHY_PHYSR, 2, &tmp16);
1581 
1582 	if (!(tmp16 & GMII_PHY_PHYSR_LINK)) {
1583 		return 0;
1584 	} else if (GMII_PHY_PHYSR_GIGA == (tmp16 & GMII_PHY_PHYSR_SMASK)) {
1585 		mode |= AX_MEDIUM_GIGAMODE | AX_MEDIUM_EN_125MHZ;
1586 		if (dev->net->mtu > 1500)
1587 			mode |= AX_MEDIUM_JUMBO_EN;
1588 
1589 		if (link_sts & AX_USB_SS)
1590 			memcpy(tmp, &AX88179_BULKIN_SIZE[0], 5);
1591 		else if (link_sts & AX_USB_HS)
1592 			memcpy(tmp, &AX88179_BULKIN_SIZE[1], 5);
1593 		else
1594 			memcpy(tmp, &AX88179_BULKIN_SIZE[3], 5);
1595 	} else if (GMII_PHY_PHYSR_100 == (tmp16 & GMII_PHY_PHYSR_SMASK)) {
1596 		mode |= AX_MEDIUM_PS;
1597 
1598 		if (link_sts & (AX_USB_SS | AX_USB_HS))
1599 			memcpy(tmp, &AX88179_BULKIN_SIZE[2], 5);
1600 		else
1601 			memcpy(tmp, &AX88179_BULKIN_SIZE[3], 5);
1602 	} else {
1603 		memcpy(tmp, &AX88179_BULKIN_SIZE[3], 5);
1604 	}
1605 
1606 	/* RX bulk configuration */
1607 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RX_BULKIN_QCTRL, 5, 5, tmp);
1608 
1609 	dev->rx_urb_size = (1024 * (tmp[3] + 2));
1610 
1611 	if (tmp16 & GMII_PHY_PHYSR_FULL)
1612 		mode |= AX_MEDIUM_FULL_DUPLEX;
1613 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
1614 			  2, 2, &mode);
1615 
1616 	ax179_data->eee_enabled = ax88179_chk_eee(dev);
1617 
1618 	netif_carrier_on(dev->net);
1619 
1620 	return 0;
1621 }
1622 
1623 static int ax88179_reset(struct usbnet *dev)
1624 {
1625 	u8 buf[5];
1626 	u16 *tmp16;
1627 	u8 *tmp;
1628 	struct ax88179_data *ax179_data = (struct ax88179_data *)dev->data;
1629 	struct ethtool_eee eee_data;
1630 
1631 	tmp16 = (u16 *)buf;
1632 	tmp = (u8 *)buf;
1633 
1634 	/* Power up ethernet PHY */
1635 	*tmp16 = 0;
1636 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL, 2, 2, tmp16);
1637 
1638 	*tmp16 = AX_PHYPWR_RSTCTL_IPRL;
1639 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL, 2, 2, tmp16);
1640 	msleep(200);
1641 
1642 	*tmp = AX_CLK_SELECT_ACS | AX_CLK_SELECT_BCS;
1643 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_CLK_SELECT, 1, 1, tmp);
1644 	msleep(100);
1645 
1646 	/* Ethernet PHY Auto Detach*/
1647 	ax88179_auto_detach(dev, 0);
1648 
1649 	/* Read MAC address from DTB or asix chip */
1650 	ax88179_get_mac_addr(dev);
1651 
1652 	/* RX bulk configuration */
1653 	memcpy(tmp, &AX88179_BULKIN_SIZE[0], 5);
1654 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RX_BULKIN_QCTRL, 5, 5, tmp);
1655 
1656 	dev->rx_urb_size = 1024 * 20;
1657 
1658 	*tmp = 0x34;
1659 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PAUSE_WATERLVL_LOW, 1, 1, tmp);
1660 
1661 	*tmp = 0x52;
1662 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PAUSE_WATERLVL_HIGH,
1663 			  1, 1, tmp);
1664 
1665 	dev->net->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
1666 			      NETIF_F_RXCSUM;
1667 
1668 	dev->net->hw_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
1669 				 NETIF_F_RXCSUM;
1670 
1671 	/* Enable checksum offload */
1672 	*tmp = AX_RXCOE_IP | AX_RXCOE_TCP | AX_RXCOE_UDP |
1673 	       AX_RXCOE_TCPV6 | AX_RXCOE_UDPV6;
1674 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RXCOE_CTL, 1, 1, tmp);
1675 
1676 	*tmp = AX_TXCOE_IP | AX_TXCOE_TCP | AX_TXCOE_UDP |
1677 	       AX_TXCOE_TCPV6 | AX_TXCOE_UDPV6;
1678 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_TXCOE_CTL, 1, 1, tmp);
1679 
1680 	/* Configure RX control register => start operation */
1681 	*tmp16 = AX_RX_CTL_DROPCRCERR | AX_RX_CTL_IPE | AX_RX_CTL_START |
1682 		 AX_RX_CTL_AP | AX_RX_CTL_AMALL | AX_RX_CTL_AB;
1683 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RX_CTL, 2, 2, tmp16);
1684 
1685 	*tmp = AX_MONITOR_MODE_PMETYPE | AX_MONITOR_MODE_PMEPOL |
1686 	       AX_MONITOR_MODE_RWMP;
1687 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_MONITOR_MOD, 1, 1, tmp);
1688 
1689 	/* Configure default medium type => giga */
1690 	*tmp16 = AX_MEDIUM_RECEIVE_EN | AX_MEDIUM_TXFLOW_CTRLEN |
1691 		 AX_MEDIUM_RXFLOW_CTRLEN | AX_MEDIUM_FULL_DUPLEX |
1692 		 AX_MEDIUM_GIGAMODE;
1693 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
1694 			  2, 2, tmp16);
1695 
1696 	ax88179_led_setting(dev);
1697 
1698 	ax179_data->eee_enabled = 0;
1699 	ax179_data->eee_active = 0;
1700 
1701 	ax88179_disable_eee(dev);
1702 
1703 	ax88179_ethtool_get_eee(dev, &eee_data);
1704 	eee_data.advertised = 0;
1705 	ax88179_ethtool_set_eee(dev, &eee_data);
1706 
1707 	/* Restart autoneg */
1708 	mii_nway_restart(&dev->mii);
1709 
1710 	usbnet_link_change(dev, 0, 0);
1711 
1712 	return 0;
1713 }
1714 
1715 static int ax88179_stop(struct usbnet *dev)
1716 {
1717 	u16 tmp16;
1718 
1719 	ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
1720 			 2, 2, &tmp16);
1721 	tmp16 &= ~AX_MEDIUM_RECEIVE_EN;
1722 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
1723 			  2, 2, &tmp16);
1724 
1725 	return 0;
1726 }
1727 
1728 static const struct driver_info ax88179_info = {
1729 	.description = "ASIX AX88179 USB 3.0 Gigabit Ethernet",
1730 	.bind = ax88179_bind,
1731 	.unbind = ax88179_unbind,
1732 	.status = ax88179_status,
1733 	.link_reset = ax88179_link_reset,
1734 	.reset = ax88179_reset,
1735 	.stop = ax88179_stop,
1736 	.flags = FLAG_ETHER | FLAG_FRAMING_AX,
1737 	.rx_fixup = ax88179_rx_fixup,
1738 	.tx_fixup = ax88179_tx_fixup,
1739 };
1740 
1741 static const struct driver_info ax88178a_info = {
1742 	.description = "ASIX AX88178A USB 2.0 Gigabit Ethernet",
1743 	.bind = ax88179_bind,
1744 	.unbind = ax88179_unbind,
1745 	.status = ax88179_status,
1746 	.link_reset = ax88179_link_reset,
1747 	.reset = ax88179_reset,
1748 	.stop = ax88179_stop,
1749 	.flags = FLAG_ETHER | FLAG_FRAMING_AX,
1750 	.rx_fixup = ax88179_rx_fixup,
1751 	.tx_fixup = ax88179_tx_fixup,
1752 };
1753 
1754 static const struct driver_info cypress_GX3_info = {
1755 	.description = "Cypress GX3 SuperSpeed to Gigabit Ethernet Controller",
1756 	.bind = ax88179_bind,
1757 	.unbind = ax88179_unbind,
1758 	.status = ax88179_status,
1759 	.link_reset = ax88179_link_reset,
1760 	.reset = ax88179_reset,
1761 	.stop = ax88179_stop,
1762 	.flags = FLAG_ETHER | FLAG_FRAMING_AX,
1763 	.rx_fixup = ax88179_rx_fixup,
1764 	.tx_fixup = ax88179_tx_fixup,
1765 };
1766 
1767 static const struct driver_info dlink_dub1312_info = {
1768 	.description = "D-Link DUB-1312 USB 3.0 to Gigabit Ethernet Adapter",
1769 	.bind = ax88179_bind,
1770 	.unbind = ax88179_unbind,
1771 	.status = ax88179_status,
1772 	.link_reset = ax88179_link_reset,
1773 	.reset = ax88179_reset,
1774 	.stop = ax88179_stop,
1775 	.flags = FLAG_ETHER | FLAG_FRAMING_AX,
1776 	.rx_fixup = ax88179_rx_fixup,
1777 	.tx_fixup = ax88179_tx_fixup,
1778 };
1779 
1780 static const struct driver_info sitecom_info = {
1781 	.description = "Sitecom USB 3.0 to Gigabit Adapter",
1782 	.bind = ax88179_bind,
1783 	.unbind = ax88179_unbind,
1784 	.status = ax88179_status,
1785 	.link_reset = ax88179_link_reset,
1786 	.reset = ax88179_reset,
1787 	.stop = ax88179_stop,
1788 	.flags = FLAG_ETHER | FLAG_FRAMING_AX,
1789 	.rx_fixup = ax88179_rx_fixup,
1790 	.tx_fixup = ax88179_tx_fixup,
1791 };
1792 
1793 static const struct driver_info samsung_info = {
1794 	.description = "Samsung USB Ethernet Adapter",
1795 	.bind = ax88179_bind,
1796 	.unbind = ax88179_unbind,
1797 	.status = ax88179_status,
1798 	.link_reset = ax88179_link_reset,
1799 	.reset = ax88179_reset,
1800 	.stop = ax88179_stop,
1801 	.flags = FLAG_ETHER | FLAG_FRAMING_AX,
1802 	.rx_fixup = ax88179_rx_fixup,
1803 	.tx_fixup = ax88179_tx_fixup,
1804 };
1805 
1806 static const struct driver_info lenovo_info = {
1807 	.description = "Lenovo OneLinkDock Gigabit LAN",
1808 	.bind = ax88179_bind,
1809 	.unbind = ax88179_unbind,
1810 	.status = ax88179_status,
1811 	.link_reset = ax88179_link_reset,
1812 	.reset = ax88179_reset,
1813 	.stop = ax88179_stop,
1814 	.flags = FLAG_ETHER | FLAG_FRAMING_AX,
1815 	.rx_fixup = ax88179_rx_fixup,
1816 	.tx_fixup = ax88179_tx_fixup,
1817 };
1818 
1819 static const struct driver_info belkin_info = {
1820 	.description = "Belkin USB Ethernet Adapter",
1821 	.bind	= ax88179_bind,
1822 	.unbind = ax88179_unbind,
1823 	.status = ax88179_status,
1824 	.link_reset = ax88179_link_reset,
1825 	.reset	= ax88179_reset,
1826 	.stop	= ax88179_stop,
1827 	.flags	= FLAG_ETHER | FLAG_FRAMING_AX,
1828 	.rx_fixup = ax88179_rx_fixup,
1829 	.tx_fixup = ax88179_tx_fixup,
1830 };
1831 
1832 static const struct driver_info toshiba_info = {
1833 	.description = "Toshiba USB Ethernet Adapter",
1834 	.bind	= ax88179_bind,
1835 	.unbind = ax88179_unbind,
1836 	.status = ax88179_status,
1837 	.link_reset = ax88179_link_reset,
1838 	.reset	= ax88179_reset,
1839 	.stop = ax88179_stop,
1840 	.flags	= FLAG_ETHER | FLAG_FRAMING_AX,
1841 	.rx_fixup = ax88179_rx_fixup,
1842 	.tx_fixup = ax88179_tx_fixup,
1843 };
1844 
1845 static const struct driver_info mct_info = {
1846 	.description = "MCT USB 3.0 Gigabit Ethernet Adapter",
1847 	.bind	= ax88179_bind,
1848 	.unbind	= ax88179_unbind,
1849 	.status	= ax88179_status,
1850 	.link_reset = ax88179_link_reset,
1851 	.reset	= ax88179_reset,
1852 	.stop	= ax88179_stop,
1853 	.flags	= FLAG_ETHER | FLAG_FRAMING_AX,
1854 	.rx_fixup = ax88179_rx_fixup,
1855 	.tx_fixup = ax88179_tx_fixup,
1856 };
1857 
1858 static const struct usb_device_id products[] = {
1859 {
1860 	/* ASIX AX88179 10/100/1000 */
1861 	USB_DEVICE(0x0b95, 0x1790),
1862 	.driver_info = (unsigned long)&ax88179_info,
1863 }, {
1864 	/* ASIX AX88178A 10/100/1000 */
1865 	USB_DEVICE(0x0b95, 0x178a),
1866 	.driver_info = (unsigned long)&ax88178a_info,
1867 }, {
1868 	/* Cypress GX3 SuperSpeed to Gigabit Ethernet Bridge Controller */
1869 	USB_DEVICE(0x04b4, 0x3610),
1870 	.driver_info = (unsigned long)&cypress_GX3_info,
1871 }, {
1872 	/* D-Link DUB-1312 USB 3.0 to Gigabit Ethernet Adapter */
1873 	USB_DEVICE(0x2001, 0x4a00),
1874 	.driver_info = (unsigned long)&dlink_dub1312_info,
1875 }, {
1876 	/* Sitecom USB 3.0 to Gigabit Adapter */
1877 	USB_DEVICE(0x0df6, 0x0072),
1878 	.driver_info = (unsigned long)&sitecom_info,
1879 }, {
1880 	/* Samsung USB Ethernet Adapter */
1881 	USB_DEVICE(0x04e8, 0xa100),
1882 	.driver_info = (unsigned long)&samsung_info,
1883 }, {
1884 	/* Lenovo OneLinkDock Gigabit LAN */
1885 	USB_DEVICE(0x17ef, 0x304b),
1886 	.driver_info = (unsigned long)&lenovo_info,
1887 }, {
1888 	/* Belkin B2B128 USB 3.0 Hub + Gigabit Ethernet Adapter */
1889 	USB_DEVICE(0x050d, 0x0128),
1890 	.driver_info = (unsigned long)&belkin_info,
1891 }, {
1892 	/* Toshiba USB 3.0 GBit Ethernet Adapter */
1893 	USB_DEVICE(0x0930, 0x0a13),
1894 	.driver_info = (unsigned long)&toshiba_info,
1895 }, {
1896 	/* Magic Control Technology U3-A9003 USB 3.0 Gigabit Ethernet Adapter */
1897 	USB_DEVICE(0x0711, 0x0179),
1898 	.driver_info = (unsigned long)&mct_info,
1899 },
1900 	{ },
1901 };
1902 MODULE_DEVICE_TABLE(usb, products);
1903 
1904 static struct usb_driver ax88179_178a_driver = {
1905 	.name =		"ax88179_178a",
1906 	.id_table =	products,
1907 	.probe =	usbnet_probe,
1908 	.suspend =	ax88179_suspend,
1909 	.resume =	ax88179_resume,
1910 	.reset_resume =	ax88179_resume,
1911 	.disconnect =	usbnet_disconnect,
1912 	.supports_autosuspend = 1,
1913 	.disable_hub_initiated_lpm = 1,
1914 };
1915 
1916 module_usb_driver(ax88179_178a_driver);
1917 
1918 MODULE_DESCRIPTION("ASIX AX88179/178A based USB 3.0/2.0 Gigabit Ethernet Devices");
1919 MODULE_LICENSE("GPL");
1920