xref: /openbmc/u-boot/drivers/usb/eth/asix.c (revision 5c8d14df)
1 /*
2  * Copyright (c) 2011 The Chromium OS Authors.
3  * See file CREDITS for list of people who contributed to this
4  * project.
5  *
6  * This program is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU General Public License as
8  * published by the Free Software Foundation; either version 2 of
9  * the License, or (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software
18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
19  * MA 02111-1307 USA
20  */
21 
22 #include <common.h>
23 #include <usb.h>
24 #include <linux/mii.h>
25 #include "usb_ether.h"
26 
27 
28 /* ASIX AX8817X based USB 2.0 Ethernet Devices */
29 
30 #define AX_CMD_SET_SW_MII		0x06
31 #define AX_CMD_READ_MII_REG		0x07
32 #define AX_CMD_WRITE_MII_REG		0x08
33 #define AX_CMD_SET_HW_MII		0x0a
34 #define AX_CMD_READ_RX_CTL		0x0f
35 #define AX_CMD_WRITE_RX_CTL		0x10
36 #define AX_CMD_WRITE_IPG0		0x12
37 #define AX_CMD_READ_NODE_ID		0x13
38 #define AX_CMD_READ_PHY_ID		0x19
39 #define AX_CMD_WRITE_MEDIUM_MODE	0x1b
40 #define AX_CMD_WRITE_GPIOS		0x1f
41 #define AX_CMD_SW_RESET			0x20
42 #define AX_CMD_SW_PHY_SELECT		0x22
43 
44 #define AX_SWRESET_CLEAR		0x00
45 #define AX_SWRESET_PRTE			0x04
46 #define AX_SWRESET_PRL			0x08
47 #define AX_SWRESET_IPRL			0x20
48 #define AX_SWRESET_IPPD			0x40
49 
50 #define AX88772_IPG0_DEFAULT		0x15
51 #define AX88772_IPG1_DEFAULT		0x0c
52 #define AX88772_IPG2_DEFAULT		0x12
53 
54 /* AX88772 & AX88178 Medium Mode Register */
55 #define AX_MEDIUM_PF		0x0080
56 #define AX_MEDIUM_JFE		0x0040
57 #define AX_MEDIUM_TFC		0x0020
58 #define AX_MEDIUM_RFC		0x0010
59 #define AX_MEDIUM_ENCK		0x0008
60 #define AX_MEDIUM_AC		0x0004
61 #define AX_MEDIUM_FD		0x0002
62 #define AX_MEDIUM_GM		0x0001
63 #define AX_MEDIUM_SM		0x1000
64 #define AX_MEDIUM_SBP		0x0800
65 #define AX_MEDIUM_PS		0x0200
66 #define AX_MEDIUM_RE		0x0100
67 
68 #define AX88178_MEDIUM_DEFAULT	\
69 	(AX_MEDIUM_PS | AX_MEDIUM_FD | AX_MEDIUM_AC | \
70 	 AX_MEDIUM_RFC | AX_MEDIUM_TFC | AX_MEDIUM_JFE | \
71 	 AX_MEDIUM_RE)
72 
73 #define AX88772_MEDIUM_DEFAULT	\
74 	(AX_MEDIUM_FD | AX_MEDIUM_RFC | \
75 	 AX_MEDIUM_TFC | AX_MEDIUM_PS | \
76 	 AX_MEDIUM_AC | AX_MEDIUM_RE)
77 
78 /* AX88772 & AX88178 RX_CTL values */
79 #define AX_RX_CTL_SO			0x0080
80 #define AX_RX_CTL_AB			0x0008
81 
82 #define AX_DEFAULT_RX_CTL	\
83 	(AX_RX_CTL_SO | AX_RX_CTL_AB)
84 
85 /* GPIO 2 toggles */
86 #define AX_GPIO_GPO2EN		0x10	/* GPIO2 Output enable */
87 #define AX_GPIO_GPO_2		0x20	/* GPIO2 Output value */
88 #define AX_GPIO_RSE		0x80	/* Reload serial EEPROM */
89 
90 /* local defines */
91 #define ASIX_BASE_NAME "asx"
92 #define USB_CTRL_SET_TIMEOUT 5000
93 #define USB_CTRL_GET_TIMEOUT 5000
94 #define USB_BULK_SEND_TIMEOUT 5000
95 #define USB_BULK_RECV_TIMEOUT 5000
96 
97 #define AX_RX_URB_SIZE 2048
98 #define PHY_CONNECT_TIMEOUT 5000
99 
100 /* local vars */
101 static int curr_eth_dev; /* index for name of next device detected */
102 
103 /*
104  * Asix infrastructure commands
105  */
106 static int asix_write_cmd(struct ueth_data *dev, u8 cmd, u16 value, u16 index,
107 			     u16 size, void *data)
108 {
109 	int len;
110 
111 	debug("asix_write_cmd() cmd=0x%02x value=0x%04x index=0x%04x "
112 		"size=%d\n", cmd, value, index, size);
113 
114 	len = usb_control_msg(
115 		dev->pusb_dev,
116 		usb_sndctrlpipe(dev->pusb_dev, 0),
117 		cmd,
118 		USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
119 		value,
120 		index,
121 		data,
122 		size,
123 		USB_CTRL_SET_TIMEOUT);
124 
125 	return len == size ? 0 : -1;
126 }
127 
128 static int asix_read_cmd(struct ueth_data *dev, u8 cmd, u16 value, u16 index,
129 			    u16 size, void *data)
130 {
131 	int len;
132 
133 	debug("asix_read_cmd() cmd=0x%02x value=0x%04x index=0x%04x size=%d\n",
134 		cmd, value, index, size);
135 
136 	len = usb_control_msg(
137 		dev->pusb_dev,
138 		usb_rcvctrlpipe(dev->pusb_dev, 0),
139 		cmd,
140 		USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
141 		value,
142 		index,
143 		data,
144 		size,
145 		USB_CTRL_GET_TIMEOUT);
146 	return len == size ? 0 : -1;
147 }
148 
149 static inline int asix_set_sw_mii(struct ueth_data *dev)
150 {
151 	int ret;
152 
153 	ret = asix_write_cmd(dev, AX_CMD_SET_SW_MII, 0x0000, 0, 0, NULL);
154 	if (ret < 0)
155 		debug("Failed to enable software MII access\n");
156 	return ret;
157 }
158 
159 static inline int asix_set_hw_mii(struct ueth_data *dev)
160 {
161 	int ret;
162 
163 	ret = asix_write_cmd(dev, AX_CMD_SET_HW_MII, 0x0000, 0, 0, NULL);
164 	if (ret < 0)
165 		debug("Failed to enable hardware MII access\n");
166 	return ret;
167 }
168 
169 static int asix_mdio_read(struct ueth_data *dev, int phy_id, int loc)
170 {
171 	ALLOC_CACHE_ALIGN_BUFFER(__le16, res, 1);
172 
173 	asix_set_sw_mii(dev);
174 	asix_read_cmd(dev, AX_CMD_READ_MII_REG, phy_id, (__u16)loc, 2, res);
175 	asix_set_hw_mii(dev);
176 
177 	debug("asix_mdio_read() phy_id=0x%02x, loc=0x%02x, returns=0x%04x\n",
178 			phy_id, loc, le16_to_cpu(*res));
179 
180 	return le16_to_cpu(*res);
181 }
182 
183 static void
184 asix_mdio_write(struct ueth_data *dev, int phy_id, int loc, int val)
185 {
186 	ALLOC_CACHE_ALIGN_BUFFER(__le16, res, 1);
187 	*res = cpu_to_le16(val);
188 
189 	debug("asix_mdio_write() phy_id=0x%02x, loc=0x%02x, val=0x%04x\n",
190 			phy_id, loc, val);
191 	asix_set_sw_mii(dev);
192 	asix_write_cmd(dev, AX_CMD_WRITE_MII_REG, phy_id, (__u16)loc, 2, res);
193 	asix_set_hw_mii(dev);
194 }
195 
196 /*
197  * Asix "high level" commands
198  */
199 static int asix_sw_reset(struct ueth_data *dev, u8 flags)
200 {
201 	int ret;
202 
203 	ret = asix_write_cmd(dev, AX_CMD_SW_RESET, flags, 0, 0, NULL);
204 	if (ret < 0)
205 		debug("Failed to send software reset: %02x\n", ret);
206 	else
207 		udelay(150 * 1000);
208 
209 	return ret;
210 }
211 
212 static inline int asix_get_phy_addr(struct ueth_data *dev)
213 {
214 	ALLOC_CACHE_ALIGN_BUFFER(u8, buf, 2);
215 
216 	int ret = asix_read_cmd(dev, AX_CMD_READ_PHY_ID, 0, 0, 2, buf);
217 
218 	debug("asix_get_phy_addr()\n");
219 
220 	if (ret < 0) {
221 		debug("Error reading PHYID register: %02x\n", ret);
222 		goto out;
223 	}
224 	debug("asix_get_phy_addr() returning 0x%02x%02x\n", buf[0], buf[1]);
225 	ret = buf[1];
226 
227 out:
228 	return ret;
229 }
230 
231 static int asix_write_medium_mode(struct ueth_data *dev, u16 mode)
232 {
233 	int ret;
234 
235 	debug("asix_write_medium_mode() - mode = 0x%04x\n", mode);
236 	ret = asix_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE, mode,
237 			0, 0, NULL);
238 	if (ret < 0) {
239 		debug("Failed to write Medium Mode mode to 0x%04x: %02x\n",
240 			mode, ret);
241 	}
242 	return ret;
243 }
244 
245 static u16 asix_read_rx_ctl(struct ueth_data *dev)
246 {
247 	ALLOC_CACHE_ALIGN_BUFFER(__le16, v, 1);
248 
249 	int ret = asix_read_cmd(dev, AX_CMD_READ_RX_CTL, 0, 0, 2, v);
250 
251 	if (ret < 0)
252 		debug("Error reading RX_CTL register: %02x\n", ret);
253 	else
254 		ret = le16_to_cpu(*v);
255 	return ret;
256 }
257 
258 static int asix_write_rx_ctl(struct ueth_data *dev, u16 mode)
259 {
260 	int ret;
261 
262 	debug("asix_write_rx_ctl() - mode = 0x%04x\n", mode);
263 	ret = asix_write_cmd(dev, AX_CMD_WRITE_RX_CTL, mode, 0, 0, NULL);
264 	if (ret < 0) {
265 		debug("Failed to write RX_CTL mode to 0x%04x: %02x\n",
266 				mode, ret);
267 	}
268 	return ret;
269 }
270 
271 static int asix_write_gpio(struct ueth_data *dev, u16 value, int sleep)
272 {
273 	int ret;
274 
275 	debug("asix_write_gpio() - value = 0x%04x\n", value);
276 	ret = asix_write_cmd(dev, AX_CMD_WRITE_GPIOS, value, 0, 0, NULL);
277 	if (ret < 0) {
278 		debug("Failed to write GPIO value 0x%04x: %02x\n",
279 			value, ret);
280 	}
281 	if (sleep)
282 		udelay(sleep * 1000);
283 
284 	return ret;
285 }
286 
287 /*
288  * mii commands
289  */
290 
291 /*
292  * mii_nway_restart - restart NWay (autonegotiation) for this interface
293  *
294  * Returns 0 on success, negative on error.
295  */
296 static int mii_nway_restart(struct ueth_data *dev)
297 {
298 	int bmcr;
299 	int r = -1;
300 
301 	/* if autoneg is off, it's an error */
302 	bmcr = asix_mdio_read(dev, dev->phy_id, MII_BMCR);
303 
304 	if (bmcr & BMCR_ANENABLE) {
305 		bmcr |= BMCR_ANRESTART;
306 		asix_mdio_write(dev, dev->phy_id, MII_BMCR, bmcr);
307 		r = 0;
308 	}
309 
310 	return r;
311 }
312 
313 /*
314  * Asix callbacks
315  */
316 static int asix_init(struct eth_device *eth, bd_t *bd)
317 {
318 	int embd_phy;
319 	ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buf, ETH_ALEN);
320 	u16 rx_ctl;
321 	struct ueth_data	*dev = (struct ueth_data *)eth->priv;
322 	int timeout = 0;
323 #define TIMEOUT_RESOLUTION 50	/* ms */
324 	int link_detected;
325 
326 	debug("** %s()\n", __func__);
327 
328 	if (asix_write_gpio(dev,
329 			AX_GPIO_RSE | AX_GPIO_GPO_2 | AX_GPIO_GPO2EN, 5) < 0)
330 		goto out_err;
331 
332 	/* 0x10 is the phy id of the embedded 10/100 ethernet phy */
333 	embd_phy = ((asix_get_phy_addr(dev) & 0x1f) == 0x10 ? 1 : 0);
334 	if (asix_write_cmd(dev, AX_CMD_SW_PHY_SELECT,
335 				embd_phy, 0, 0, NULL) < 0) {
336 		debug("Select PHY #1 failed\n");
337 		goto out_err;
338 	}
339 
340 	if (asix_sw_reset(dev, AX_SWRESET_IPPD | AX_SWRESET_PRL) < 0)
341 		goto out_err;
342 
343 	if (asix_sw_reset(dev, AX_SWRESET_CLEAR) < 0)
344 		goto out_err;
345 
346 	if (embd_phy) {
347 		if (asix_sw_reset(dev, AX_SWRESET_IPRL) < 0)
348 			goto out_err;
349 	} else {
350 		if (asix_sw_reset(dev, AX_SWRESET_PRTE) < 0)
351 			goto out_err;
352 	}
353 
354 	rx_ctl = asix_read_rx_ctl(dev);
355 	debug("RX_CTL is 0x%04x after software reset\n", rx_ctl);
356 	if (asix_write_rx_ctl(dev, 0x0000) < 0)
357 		goto out_err;
358 
359 	rx_ctl = asix_read_rx_ctl(dev);
360 	debug("RX_CTL is 0x%04x setting to 0x0000\n", rx_ctl);
361 
362 	/* Get the MAC address */
363 	if (asix_read_cmd(dev, AX_CMD_READ_NODE_ID,
364 				0, 0, ETH_ALEN, buf) < 0) {
365 		debug("Failed to read MAC address.\n");
366 		goto out_err;
367 	}
368 	memcpy(eth->enetaddr, buf, ETH_ALEN);
369 	debug("MAC %02x:%02x:%02x:%02x:%02x:%02x\n",
370 		eth->enetaddr[0], eth->enetaddr[1],
371 		eth->enetaddr[2], eth->enetaddr[3],
372 		eth->enetaddr[4], eth->enetaddr[5]);
373 
374 	dev->phy_id = asix_get_phy_addr(dev);
375 	if (dev->phy_id < 0)
376 		debug("Failed to read phy id\n");
377 
378 	if (asix_sw_reset(dev, AX_SWRESET_PRL) < 0)
379 		goto out_err;
380 
381 	if (asix_sw_reset(dev, AX_SWRESET_IPRL | AX_SWRESET_PRL) < 0)
382 		goto out_err;
383 
384 	asix_mdio_write(dev, dev->phy_id, MII_BMCR, BMCR_RESET);
385 	asix_mdio_write(dev, dev->phy_id, MII_ADVERTISE,
386 			ADVERTISE_ALL | ADVERTISE_CSMA);
387 	mii_nway_restart(dev);
388 
389 	if (asix_write_medium_mode(dev, AX88772_MEDIUM_DEFAULT) < 0)
390 		goto out_err;
391 
392 	if (asix_write_cmd(dev, AX_CMD_WRITE_IPG0,
393 				AX88772_IPG0_DEFAULT | AX88772_IPG1_DEFAULT,
394 				AX88772_IPG2_DEFAULT, 0, NULL) < 0) {
395 		debug("Write IPG,IPG1,IPG2 failed\n");
396 		goto out_err;
397 	}
398 
399 	if (asix_write_rx_ctl(dev, AX_DEFAULT_RX_CTL) < 0)
400 		goto out_err;
401 
402 	do {
403 		link_detected = asix_mdio_read(dev, dev->phy_id, MII_BMSR) &
404 			BMSR_LSTATUS;
405 		if (!link_detected) {
406 			if (timeout == 0)
407 				printf("Waiting for Ethernet connection... ");
408 			udelay(TIMEOUT_RESOLUTION * 1000);
409 			timeout += TIMEOUT_RESOLUTION;
410 		}
411 	} while (!link_detected && timeout < PHY_CONNECT_TIMEOUT);
412 	if (link_detected) {
413 		if (timeout != 0)
414 			printf("done.\n");
415 	} else {
416 		printf("unable to connect.\n");
417 		goto out_err;
418 	}
419 
420 	return 0;
421 out_err:
422 	return -1;
423 }
424 
425 static int asix_send(struct eth_device *eth, void *packet, int length)
426 {
427 	struct ueth_data *dev = (struct ueth_data *)eth->priv;
428 	int err;
429 	u32 packet_len;
430 	int actual_len;
431 	ALLOC_CACHE_ALIGN_BUFFER(unsigned char, msg,
432 		PKTSIZE + sizeof(packet_len));
433 
434 	debug("** %s(), len %d\n", __func__, length);
435 
436 	packet_len = (((length) ^ 0x0000ffff) << 16) + (length);
437 	cpu_to_le32s(&packet_len);
438 
439 	memcpy(msg, &packet_len, sizeof(packet_len));
440 	memcpy(msg + sizeof(packet_len), (void *)packet, length);
441 	if (length & 1)
442 		length++;
443 
444 	err = usb_bulk_msg(dev->pusb_dev,
445 				usb_sndbulkpipe(dev->pusb_dev, dev->ep_out),
446 				(void *)msg,
447 				length + sizeof(packet_len),
448 				&actual_len,
449 				USB_BULK_SEND_TIMEOUT);
450 	debug("Tx: len = %u, actual = %u, err = %d\n",
451 			length + sizeof(packet_len), actual_len, err);
452 
453 	return err;
454 }
455 
456 static int asix_recv(struct eth_device *eth)
457 {
458 	struct ueth_data *dev = (struct ueth_data *)eth->priv;
459 	ALLOC_CACHE_ALIGN_BUFFER(unsigned char, recv_buf, AX_RX_URB_SIZE);
460 	unsigned char *buf_ptr;
461 	int err;
462 	int actual_len;
463 	u32 packet_len;
464 
465 	debug("** %s()\n", __func__);
466 
467 	err = usb_bulk_msg(dev->pusb_dev,
468 				usb_rcvbulkpipe(dev->pusb_dev, dev->ep_in),
469 				(void *)recv_buf,
470 				AX_RX_URB_SIZE,
471 				&actual_len,
472 				USB_BULK_RECV_TIMEOUT);
473 	debug("Rx: len = %u, actual = %u, err = %d\n", AX_RX_URB_SIZE,
474 		actual_len, err);
475 	if (err != 0) {
476 		debug("Rx: failed to receive\n");
477 		return -1;
478 	}
479 	if (actual_len > AX_RX_URB_SIZE) {
480 		debug("Rx: received too many bytes %d\n", actual_len);
481 		return -1;
482 	}
483 
484 	buf_ptr = recv_buf;
485 	while (actual_len > 0) {
486 		/*
487 		 * 1st 4 bytes contain the length of the actual data as two
488 		 * complementary 16-bit words. Extract the length of the data.
489 		 */
490 		if (actual_len < sizeof(packet_len)) {
491 			debug("Rx: incomplete packet length\n");
492 			return -1;
493 		}
494 		memcpy(&packet_len, buf_ptr, sizeof(packet_len));
495 		le32_to_cpus(&packet_len);
496 		if (((packet_len >> 16) ^ 0xffff) != (packet_len & 0xffff)) {
497 			debug("Rx: malformed packet length: %#x (%#x:%#x)\n",
498 			      packet_len, (packet_len >> 16) ^ 0xffff,
499 			      packet_len & 0xffff);
500 			return -1;
501 		}
502 		packet_len = packet_len & 0xffff;
503 		if (packet_len > actual_len - sizeof(packet_len)) {
504 			debug("Rx: too large packet: %d\n", packet_len);
505 			return -1;
506 		}
507 
508 		/* Notify net stack */
509 		NetReceive(buf_ptr + sizeof(packet_len), packet_len);
510 
511 		/* Adjust for next iteration. Packets are padded to 16-bits */
512 		if (packet_len & 1)
513 			packet_len++;
514 		actual_len -= sizeof(packet_len) + packet_len;
515 		buf_ptr += sizeof(packet_len) + packet_len;
516 	}
517 
518 	return err;
519 }
520 
521 static void asix_halt(struct eth_device *eth)
522 {
523 	debug("** %s()\n", __func__);
524 }
525 
526 /*
527  * Asix probing functions
528  */
529 void asix_eth_before_probe(void)
530 {
531 	curr_eth_dev = 0;
532 }
533 
534 struct asix_dongle {
535 	unsigned short vendor;
536 	unsigned short product;
537 };
538 
539 static struct asix_dongle asix_dongles[] = {
540 	{ 0x05ac, 0x1402 },	/* Apple USB Ethernet Adapter */
541 	{ 0x07d1, 0x3c05 },	/* D-Link DUB-E100 H/W Ver B1 */
542 	{ 0x0b95, 0x772a },	/* Cables-to-Go USB Ethernet Adapter */
543 	{ 0x0b95, 0x7720 },	/* Trendnet TU2-ET100 V3.0R */
544 	{ 0x0b95, 0x1720 },	/* SMC */
545 	{ 0x0db0, 0xa877 },	/* MSI - ASIX 88772a */
546 	{ 0x13b1, 0x0018 },	/* Linksys 200M v2.1 */
547 	{ 0x1557, 0x7720 },	/* 0Q0 cable ethernet */
548 	{ 0x2001, 0x3c05 },	/* DLink DUB-E100 H/W Ver B1 Alternate */
549 	{ 0x0000, 0x0000 }	/* END - Do not remove */
550 };
551 
552 /* Probe to see if a new device is actually an asix device */
553 int asix_eth_probe(struct usb_device *dev, unsigned int ifnum,
554 		      struct ueth_data *ss)
555 {
556 	struct usb_interface *iface;
557 	struct usb_interface_descriptor *iface_desc;
558 	int i;
559 
560 	/* let's examine the device now */
561 	iface = &dev->config.if_desc[ifnum];
562 	iface_desc = &dev->config.if_desc[ifnum].desc;
563 
564 	for (i = 0; asix_dongles[i].vendor != 0; i++) {
565 		if (dev->descriptor.idVendor == asix_dongles[i].vendor &&
566 		    dev->descriptor.idProduct == asix_dongles[i].product)
567 			/* Found a supported dongle */
568 			break;
569 	}
570 
571 	if (asix_dongles[i].vendor == 0)
572 		return 0;
573 
574 	memset(ss, 0, sizeof(struct ueth_data));
575 
576 	/* At this point, we know we've got a live one */
577 	debug("\n\nUSB Ethernet device detected: %#04x:%#04x\n",
578 	      dev->descriptor.idVendor, dev->descriptor.idProduct);
579 
580 	/* Initialize the ueth_data structure with some useful info */
581 	ss->ifnum = ifnum;
582 	ss->pusb_dev = dev;
583 	ss->subclass = iface_desc->bInterfaceSubClass;
584 	ss->protocol = iface_desc->bInterfaceProtocol;
585 
586 	/*
587 	 * We are expecting a minimum of 3 endpoints - in, out (bulk), and
588 	 * int. We will ignore any others.
589 	 */
590 	for (i = 0; i < iface_desc->bNumEndpoints; i++) {
591 		/* is it an BULK endpoint? */
592 		if ((iface->ep_desc[i].bmAttributes &
593 		     USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK) {
594 			if (iface->ep_desc[i].bEndpointAddress & USB_DIR_IN)
595 				ss->ep_in = iface->ep_desc[i].bEndpointAddress &
596 					USB_ENDPOINT_NUMBER_MASK;
597 			else
598 				ss->ep_out =
599 					iface->ep_desc[i].bEndpointAddress &
600 					USB_ENDPOINT_NUMBER_MASK;
601 		}
602 
603 		/* is it an interrupt endpoint? */
604 		if ((iface->ep_desc[i].bmAttributes &
605 		    USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) {
606 			ss->ep_int = iface->ep_desc[i].bEndpointAddress &
607 				USB_ENDPOINT_NUMBER_MASK;
608 			ss->irqinterval = iface->ep_desc[i].bInterval;
609 		}
610 	}
611 	debug("Endpoints In %d Out %d Int %d\n",
612 		  ss->ep_in, ss->ep_out, ss->ep_int);
613 
614 	/* Do some basic sanity checks, and bail if we find a problem */
615 	if (usb_set_interface(dev, iface_desc->bInterfaceNumber, 0) ||
616 	    !ss->ep_in || !ss->ep_out || !ss->ep_int) {
617 		debug("Problems with device\n");
618 		return 0;
619 	}
620 	dev->privptr = (void *)ss;
621 	return 1;
622 }
623 
624 int asix_eth_get_info(struct usb_device *dev, struct ueth_data *ss,
625 				struct eth_device *eth)
626 {
627 	if (!eth) {
628 		debug("%s: missing parameter.\n", __func__);
629 		return 0;
630 	}
631 	sprintf(eth->name, "%s%d", ASIX_BASE_NAME, curr_eth_dev++);
632 	eth->init = asix_init;
633 	eth->send = asix_send;
634 	eth->recv = asix_recv;
635 	eth->halt = asix_halt;
636 	eth->priv = ss;
637 
638 	return 1;
639 }
640