1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 *  Copyright (c) 1999-2021 Petko Manolov (petkan@nucleusys.com)
   4 *
   5 */
   6
   7#include <linux/sched.h>
   8#include <linux/slab.h>
   9#include <linux/init.h>
  10#include <linux/delay.h>
  11#include <linux/netdevice.h>
  12#include <linux/etherdevice.h>
  13#include <linux/ethtool.h>
  14#include <linux/mii.h>
  15#include <linux/usb.h>
  16#include <linux/module.h>
  17#include <asm/byteorder.h>
  18#include <linux/uaccess.h>
  19#include "pegasus.h"
  20
  21/*
  22 * Version Information
  23 */
  24#define DRIVER_AUTHOR "Petko Manolov <petkan@nucleusys.com>"
  25#define DRIVER_DESC "Pegasus/Pegasus II USB Ethernet driver"
  26
  27static const char driver_name[] = "pegasus";
  28
  29#undef	PEGASUS_WRITE_EEPROM
  30#define	BMSR_MEDIA	(BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | \
  31			BMSR_100FULL | BMSR_ANEGCAPABLE)
  32#define CARRIER_CHECK_DELAY (2 * HZ)
  33
  34static bool loopback;
  35static bool mii_mode;
  36static char *devid;
  37
  38static struct usb_eth_dev usb_dev_id[] = {
  39#define	PEGASUS_DEV(pn, vid, pid, flags)	\
  40	{.name = pn, .vendor = vid, .device = pid, .private = flags},
  41#define PEGASUS_DEV_CLASS(pn, vid, pid, dclass, flags) \
  42	PEGASUS_DEV(pn, vid, pid, flags)
  43#include "pegasus.h"
  44#undef	PEGASUS_DEV
  45#undef	PEGASUS_DEV_CLASS
  46	{NULL, 0, 0, 0},
  47	{NULL, 0, 0, 0}
  48};
  49
  50static struct usb_device_id pegasus_ids[] = {
  51#define	PEGASUS_DEV(pn, vid, pid, flags) \
  52	{.match_flags = USB_DEVICE_ID_MATCH_DEVICE, .idVendor = vid, .idProduct = pid},
  53/*
  54 * The Belkin F8T012xx1 bluetooth adaptor has the same vendor and product
  55 * IDs as the Belkin F5D5050, so we need to teach the pegasus driver to
  56 * ignore adaptors belonging to the "Wireless" class 0xE0. For this one
  57 * case anyway, seeing as the pegasus is for "Wired" adaptors.
  58 */
  59#define PEGASUS_DEV_CLASS(pn, vid, pid, dclass, flags) \
  60	{.match_flags = (USB_DEVICE_ID_MATCH_DEVICE | USB_DEVICE_ID_MATCH_DEV_CLASS), \
  61	.idVendor = vid, .idProduct = pid, .bDeviceClass = dclass},
  62#include "pegasus.h"
  63#undef	PEGASUS_DEV
  64#undef	PEGASUS_DEV_CLASS
  65	{},
  66	{}
  67};
  68
  69MODULE_AUTHOR(DRIVER_AUTHOR);
  70MODULE_DESCRIPTION(DRIVER_DESC);
  71MODULE_LICENSE("GPL");
  72module_param(loopback, bool, 0);
  73module_param(mii_mode, bool, 0);
  74module_param(devid, charp, 0);
  75MODULE_PARM_DESC(loopback, "Enable MAC loopback mode (bit 0)");
  76MODULE_PARM_DESC(mii_mode, "Enable HomePNA mode (bit 0),default=MII mode = 0");
  77MODULE_PARM_DESC(devid, "The format is: 'DEV_name:VendorID:DeviceID:Flags'");
  78
  79/* use ethtool to change the level for any given device */
  80static int msg_level = -1;
  81module_param(msg_level, int, 0);
  82MODULE_PARM_DESC(msg_level, "Override default message level");
  83
  84MODULE_DEVICE_TABLE(usb, pegasus_ids);
  85static const struct net_device_ops pegasus_netdev_ops;
  86
  87/*****/
  88
  89static void async_ctrl_callback(struct urb *urb)
  90{
  91	struct usb_ctrlrequest *req = (struct usb_ctrlrequest *)urb->context;
  92	int status = urb->status;
  93
  94	if (status < 0)
  95		dev_dbg(&urb->dev->dev, "%s failed with %d", __func__, status);
  96	kfree(req);
  97	usb_free_urb(urb);
  98}
  99
 100static int get_registers(pegasus_t *pegasus, __u16 indx, __u16 size, void *data)
 101{
 102	return usb_control_msg_recv(pegasus->usb, 0, PEGASUS_REQ_GET_REGS,
 103				   PEGASUS_REQT_READ, 0, indx, data, size,
 104				   1000, GFP_NOIO);
 105}
 106
 107static int set_registers(pegasus_t *pegasus, __u16 indx, __u16 size,
 108			 const void *data)
 109{
 110	int ret;
 111
 112	ret = usb_control_msg_send(pegasus->usb, 0, PEGASUS_REQ_SET_REGS,
 113				    PEGASUS_REQT_WRITE, 0, indx, data, size,
 114				    1000, GFP_NOIO);
 115	if (ret < 0)
 116		netif_dbg(pegasus, drv, pegasus->net, "%s failed with %d\n", __func__, ret);
 117
 118	return ret;
 119}
 120
 121/*
 122 * There is only one way to write to a single ADM8511 register and this is via
 123 * specific control request.  'data' is ignored by the device, but it is here to
 124 * not break the API.
 125 */
 126static int set_register(pegasus_t *pegasus, __u16 indx, __u8 data)
 127{
 128	void *buf = &data;
 129	int ret;
 130
 131	ret = usb_control_msg_send(pegasus->usb, 0, PEGASUS_REQ_SET_REG,
 132				    PEGASUS_REQT_WRITE, data, indx, buf, 1,
 133				    1000, GFP_NOIO);
 134	if (ret < 0)
 135		netif_dbg(pegasus, drv, pegasus->net, "%s failed with %d\n", __func__, ret);
 136
 137	return ret;
 138}
 139
 140static int update_eth_regs_async(pegasus_t *pegasus)
 141{
 142	int ret = -ENOMEM;
 143	struct urb *async_urb;
 144	struct usb_ctrlrequest *req;
 145
 146	req = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC);
 147	if (req == NULL)
 148		return ret;
 149
 150	async_urb = usb_alloc_urb(0, GFP_ATOMIC);
 151	if (async_urb == NULL) {
 152		kfree(req);
 153		return ret;
 154	}
 155	req->bRequestType = PEGASUS_REQT_WRITE;
 156	req->bRequest = PEGASUS_REQ_SET_REGS;
 157	req->wValue = cpu_to_le16(0);
 158	req->wIndex = cpu_to_le16(EthCtrl0);
 159	req->wLength = cpu_to_le16(3);
 160
 161	usb_fill_control_urb(async_urb, pegasus->usb,
 162			     usb_sndctrlpipe(pegasus->usb, 0), (void *)req,
 163			     pegasus->eth_regs, 3, async_ctrl_callback, req);
 164
 165	ret = usb_submit_urb(async_urb, GFP_ATOMIC);
 166	if (ret) {
 167		if (ret == -ENODEV)
 168			netif_device_detach(pegasus->net);
 169		netif_err(pegasus, drv, pegasus->net,
 170			  "%s returned %d\n", __func__, ret);
 171	}
 172	return ret;
 173}
 174
 175static int __mii_op(pegasus_t *p, __u8 phy, __u8 indx, __u16 *regd, __u8 cmd)
 176{
 177	int i, ret;
 178	__le16 regdi;
 179	__u8 data[4] = { phy, 0, 0, indx };
 180
 181	if (cmd & PHY_WRITE) {
 182		__le16 *t = (__le16 *) & data[1];
 183		*t = cpu_to_le16(*regd);
 184	}
 185	set_register(p, PhyCtrl, 0);
 186	set_registers(p, PhyAddr, sizeof(data), data);
 187	set_register(p, PhyCtrl, (indx | cmd));
 188	for (i = 0; i < REG_TIMEOUT; i++) {
 189		ret = get_registers(p, PhyCtrl, 1, data);
 190		if (ret < 0)
 191			goto fail;
 192		if (data[0] & PHY_DONE)
 193			break;
 194	}
 195	if (i >= REG_TIMEOUT) {
 196		ret = -ETIMEDOUT;
 197		goto fail;
 198	}
 199	if (cmd & PHY_READ) {
 200		ret = get_registers(p, PhyData, 2, &regdi);
 201		if (ret < 0)
 202			goto fail;
 203		*regd = le16_to_cpu(regdi);
 204	}
 205	return 0;
 206fail:
 207	netif_dbg(p, drv, p->net, "%s failed\n", __func__);
 208	return ret;
 209}
 210
 211/* Returns non-negative int on success, error on failure */
 212static int read_mii_word(pegasus_t *pegasus, __u8 phy, __u8 indx, __u16 *regd)
 213{
 214	return __mii_op(pegasus, phy, indx, regd, PHY_READ);
 215}
 216
 217/* Returns zero on success, error on failure */
 218static int write_mii_word(pegasus_t *pegasus, __u8 phy, __u8 indx, __u16 *regd)
 219{
 220	return __mii_op(pegasus, phy, indx, regd, PHY_WRITE);
 221}
 222
 223static int mdio_read(struct net_device *dev, int phy_id, int loc)
 224{
 225	pegasus_t *pegasus = netdev_priv(dev);
 226	int ret;
 227	u16 res;
 228
 229	ret = read_mii_word(pegasus, phy_id, loc, &res);
 230	if (ret < 0)
 231		return ret;
 232
 233	return (int)res;
 234}
 235
 236static void mdio_write(struct net_device *dev, int phy_id, int loc, int val)
 237{
 238	pegasus_t *pegasus = netdev_priv(dev);
 239	u16 data = val;
 240
 241	write_mii_word(pegasus, phy_id, loc, &data);
 242}
 243
 244static int read_eprom_word(pegasus_t *pegasus, __u8 index, __u16 *retdata)
 245{
 246	int ret, i;
 247	__le16 retdatai;
 248	__u8 tmp = 0;
 249
 250	set_register(pegasus, EpromCtrl, 0);
 251	set_register(pegasus, EpromOffset, index);
 252	set_register(pegasus, EpromCtrl, EPROM_READ);
 253
 254	for (i = 0; i < REG_TIMEOUT; i++) {
 255		ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
 256		if (ret < 0)
 257			goto fail;
 258		if (tmp & EPROM_DONE)
 259			break;
 260	}
 261	if (i >= REG_TIMEOUT) {
 262		ret = -ETIMEDOUT;
 263		goto fail;
 264	}
 265
 266	ret = get_registers(pegasus, EpromData, 2, &retdatai);
 267	if (ret < 0)
 268		goto fail;
 269	*retdata = le16_to_cpu(retdatai);
 270	return ret;
 271
 272fail:
 273	netif_dbg(pegasus, drv, pegasus->net, "%s failed\n", __func__);
 274	return ret;
 275}
 276
 277#ifdef	PEGASUS_WRITE_EEPROM
 278static inline void enable_eprom_write(pegasus_t *pegasus)
 279{
 280	__u8 tmp;
 281
 282	get_registers(pegasus, EthCtrl2, 1, &tmp);
 283	set_register(pegasus, EthCtrl2, tmp | EPROM_WR_ENABLE);
 284}
 285
 286static inline void disable_eprom_write(pegasus_t *pegasus)
 287{
 288	__u8 tmp;
 289
 290	get_registers(pegasus, EthCtrl2, 1, &tmp);
 291	set_register(pegasus, EpromCtrl, 0);
 292	set_register(pegasus, EthCtrl2, tmp & ~EPROM_WR_ENABLE);
 293}
 294
 295static int write_eprom_word(pegasus_t *pegasus, __u8 index, __u16 data)
 296{
 297	int i;
 298	__u8 tmp, d[4] = { 0x3f, 0, 0, EPROM_WRITE };
 299	int ret;
 300	__le16 le_data = cpu_to_le16(data);
 301
 302	set_registers(pegasus, EpromOffset, 4, d);
 303	enable_eprom_write(pegasus);
 304	set_register(pegasus, EpromOffset, index);
 305	set_registers(pegasus, EpromData, 2, &le_data);
 306	set_register(pegasus, EpromCtrl, EPROM_WRITE);
 307
 308	for (i = 0; i < REG_TIMEOUT; i++) {
 309		ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
 310		if (ret == -ESHUTDOWN)
 311			goto fail;
 312		if (tmp & EPROM_DONE)
 313			break;
 314	}
 315	disable_eprom_write(pegasus);
 316	if (i >= REG_TIMEOUT)
 317		goto fail;
 318
 319	return ret;
 320
 321fail:
 322	netif_dbg(pegasus, drv, pegasus->net, "%s failed\n", __func__);
 323	return -ETIMEDOUT;
 324}
 325#endif	/* PEGASUS_WRITE_EEPROM */
 326
 327static inline int get_node_id(pegasus_t *pegasus, u8 *id)
 328{
 329	int i, ret;
 330	u16 w16;
 331
 332	for (i = 0; i < 3; i++) {
 333		ret = read_eprom_word(pegasus, i, &w16);
 334		if (ret < 0)
 335			return ret;
 336		((__le16 *) id)[i] = cpu_to_le16(w16);
 337	}
 338
 339	return 0;
 340}
 341
 342static void set_ethernet_addr(pegasus_t *pegasus)
 343{
 344	int ret;
 345	u8 node_id[6];
 346
 347	if (pegasus->features & PEGASUS_II) {
 348		ret = get_registers(pegasus, 0x10, sizeof(node_id), node_id);
 349		if (ret < 0)
 350			goto err;
 351	} else {
 352		ret = get_node_id(pegasus, node_id);
 353		if (ret < 0)
 354			goto err;
 355		ret = set_registers(pegasus, EthID, sizeof(node_id), node_id);
 356		if (ret < 0)
 357			goto err;
 358	}
 359
 360	eth_hw_addr_set(pegasus->net, node_id);
 361
 362	return;
 363err:
 364	eth_hw_addr_random(pegasus->net);
 365	netif_dbg(pegasus, drv, pegasus->net, "software assigned MAC address.\n");
 366
 367	return;
 368}
 369
 370static inline int reset_mac(pegasus_t *pegasus)
 371{
 372	int ret, i;
 373	__u8 data = 0x8;
 374
 375	set_register(pegasus, EthCtrl1, data);
 376	for (i = 0; i < REG_TIMEOUT; i++) {
 377		ret = get_registers(pegasus, EthCtrl1, 1, &data);
 378		if (ret < 0)
 379			goto fail;
 380		if (~data & 0x08) {
 381			if (loopback)
 382				break;
 383			if (mii_mode && (pegasus->features & HAS_HOME_PNA))
 384				set_register(pegasus, Gpio1, 0x34);
 385			else
 386				set_register(pegasus, Gpio1, 0x26);
 387			set_register(pegasus, Gpio0, pegasus->features);
 388			set_register(pegasus, Gpio0, DEFAULT_GPIO_SET);
 389			break;
 390		}
 391	}
 392	if (i == REG_TIMEOUT)
 393		return -ETIMEDOUT;
 394
 395	if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
 396	    usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
 397		set_register(pegasus, Gpio0, 0x24);
 398		set_register(pegasus, Gpio0, 0x26);
 399	}
 400	if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_ELCON) {
 401		__u16 auxmode;
 402		ret = read_mii_word(pegasus, 3, 0x1b, &auxmode);
 403		if (ret < 0)
 404			goto fail;
 405		auxmode |= 4;
 406		write_mii_word(pegasus, 3, 0x1b, &auxmode);
 407	}
 408
 409	return 0;
 410fail:
 411	netif_dbg(pegasus, drv, pegasus->net, "%s failed\n", __func__);
 412	return ret;
 413}
 414
 415static int enable_net_traffic(struct net_device *dev, struct usb_device *usb)
 416{
 417	pegasus_t *pegasus = netdev_priv(dev);
 418	int ret;
 419	__u16 linkpart;
 420	__u8 data[4];
 421
 422	ret = read_mii_word(pegasus, pegasus->phy, MII_LPA, &linkpart);
 423	if (ret < 0)
 424		goto fail;
 425	data[0] = 0xc8; /* TX & RX enable, append status, no CRC */
 426	data[1] = 0;
 427	if (linkpart & (ADVERTISE_100FULL | ADVERTISE_10FULL))
 428		data[1] |= 0x20;	/* set full duplex */
 429	if (linkpart & (ADVERTISE_100FULL | ADVERTISE_100HALF))
 430		data[1] |= 0x10;	/* set 100 Mbps */
 431	if (mii_mode)
 432		data[1] = 0;
 433	data[2] = loopback ? 0x09 : 0x01;
 434
 435	memcpy(pegasus->eth_regs, data, sizeof(data));
 436	ret = set_registers(pegasus, EthCtrl0, 3, data);
 437
 438	if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
 439	    usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS2 ||
 440	    usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
 441		u16 auxmode;
 442		ret = read_mii_word(pegasus, 0, 0x1b, &auxmode);
 443		if (ret < 0)
 444			goto fail;
 445		auxmode |= 4;
 446		write_mii_word(pegasus, 0, 0x1b, &auxmode);
 447	}
 448
 449	return ret;
 450fail:
 451	netif_dbg(pegasus, drv, pegasus->net, "%s failed\n", __func__);
 452	return ret;
 453}
 454
 455static void read_bulk_callback(struct urb *urb)
 456{
 457	pegasus_t *pegasus = urb->context;
 458	struct net_device *net;
 459	u8 *buf = urb->transfer_buffer;
 460	int rx_status, count = urb->actual_length;
 461	int status = urb->status;
 462	__u16 pkt_len;
 463
 464	if (!pegasus)
 465		return;
 466
 467	net = pegasus->net;
 468	if (!netif_device_present(net) || !netif_running(net))
 469		return;
 470
 471	switch (status) {
 472	case 0:
 473		break;
 474	case -ETIME:
 475		netif_dbg(pegasus, rx_err, net, "reset MAC\n");
 476		pegasus->flags &= ~PEGASUS_RX_BUSY;
 477		break;
 478	case -EPIPE:		/* stall, or disconnect from TT */
 479		/* FIXME schedule work to clear the halt */
 480		netif_warn(pegasus, rx_err, net, "no rx stall recovery\n");
 481		return;
 482	case -ENOENT:
 483	case -ECONNRESET:
 484	case -ESHUTDOWN:
 485		netif_dbg(pegasus, ifdown, net, "rx unlink, %d\n", status);
 486		return;
 487	default:
 488		netif_dbg(pegasus, rx_err, net, "RX status %d\n", status);
 489		goto goon;
 490	}
 491
 492	if (count < 4)
 493		goto goon;
 494
 495	rx_status = buf[count - 2];
 496	if (rx_status & 0x1c) {
 497		netif_dbg(pegasus, rx_err, net,
 498			  "RX packet error %x\n", rx_status);
 499		net->stats.rx_errors++;
 500		if (rx_status & 0x04)	/* runt	*/
 501			net->stats.rx_length_errors++;
 502		if (rx_status & 0x08)
 503			net->stats.rx_crc_errors++;
 504		if (rx_status & 0x10)	/* extra bits	*/
 505			net->stats.rx_frame_errors++;
 506		goto goon;
 507	}
 508	if (pegasus->chip == 0x8513) {
 509		pkt_len = le32_to_cpu(*(__le32 *)urb->transfer_buffer);
 510		pkt_len &= 0x0fff;
 511		pegasus->rx_skb->data += 2;
 512	} else {
 513		pkt_len = buf[count - 3] << 8;
 514		pkt_len += buf[count - 4];
 515		pkt_len &= 0xfff;
 516		pkt_len -= 4;
 517	}
 518
 519	/*
 520	 * If the packet is unreasonably long, quietly drop it rather than
 521	 * kernel panicing by calling skb_put.
 522	 */
 523	if (pkt_len > PEGASUS_MTU)
 524		goto goon;
 525
 526	/*
 527	 * at this point we are sure pegasus->rx_skb != NULL
 528	 * so we go ahead and pass up the packet.
 529	 */
 530	skb_put(pegasus->rx_skb, pkt_len);
 531	pegasus->rx_skb->protocol = eth_type_trans(pegasus->rx_skb, net);
 532	netif_rx(pegasus->rx_skb);
 533	net->stats.rx_packets++;
 534	net->stats.rx_bytes += pkt_len;
 535
 536	if (pegasus->flags & PEGASUS_UNPLUG)
 537		return;
 538
 539	pegasus->rx_skb = __netdev_alloc_skb_ip_align(pegasus->net, PEGASUS_MTU,
 540						      GFP_ATOMIC);
 541
 542	if (pegasus->rx_skb == NULL)
 543		goto tl_sched;
 544goon:
 545	usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
 546			  usb_rcvbulkpipe(pegasus->usb, 1),
 547			  pegasus->rx_skb->data, PEGASUS_MTU,
 548			  read_bulk_callback, pegasus);
 549	rx_status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC);
 550	if (rx_status == -ENODEV)
 551		netif_device_detach(pegasus->net);
 552	else if (rx_status) {
 553		pegasus->flags |= PEGASUS_RX_URB_FAIL;
 554		goto tl_sched;
 555	} else {
 556		pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
 557	}
 558
 559	return;
 560
 561tl_sched:
 562	tasklet_schedule(&pegasus->rx_tl);
 563}
 564
 565static void rx_fixup(struct tasklet_struct *t)
 566{
 567	pegasus_t *pegasus = from_tasklet(pegasus, t, rx_tl);
 568	int status;
 569
 570	if (pegasus->flags & PEGASUS_UNPLUG)
 571		return;
 572
 573	if (pegasus->flags & PEGASUS_RX_URB_FAIL)
 574		if (pegasus->rx_skb)
 575			goto try_again;
 576	if (pegasus->rx_skb == NULL)
 577		pegasus->rx_skb = __netdev_alloc_skb_ip_align(pegasus->net,
 578							      PEGASUS_MTU,
 579							      GFP_ATOMIC);
 580	if (pegasus->rx_skb == NULL) {
 581		netif_warn(pegasus, rx_err, pegasus->net, "low on memory\n");
 582		tasklet_schedule(&pegasus->rx_tl);
 583		return;
 584	}
 585	usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
 586			  usb_rcvbulkpipe(pegasus->usb, 1),
 587			  pegasus->rx_skb->data, PEGASUS_MTU,
 588			  read_bulk_callback, pegasus);
 589try_again:
 590	status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC);
 591	if (status == -ENODEV)
 592		netif_device_detach(pegasus->net);
 593	else if (status) {
 594		pegasus->flags |= PEGASUS_RX_URB_FAIL;
 595		tasklet_schedule(&pegasus->rx_tl);
 596	} else {
 597		pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
 598	}
 599}
 600
 601static void write_bulk_callback(struct urb *urb)
 602{
 603	pegasus_t *pegasus = urb->context;
 604	struct net_device *net;
 605	int status = urb->status;
 606
 607	if (!pegasus)
 608		return;
 609
 610	net = pegasus->net;
 611
 612	if (!netif_device_present(net) || !netif_running(net))
 613		return;
 614
 615	switch (status) {
 616	case -EPIPE:
 617		/* FIXME schedule_work() to clear the tx halt */
 618		netif_stop_queue(net);
 619		netif_warn(pegasus, tx_err, net, "no tx stall recovery\n");
 620		return;
 621	case -ENOENT:
 622	case -ECONNRESET:
 623	case -ESHUTDOWN:
 624		netif_dbg(pegasus, ifdown, net, "tx unlink, %d\n", status);
 625		return;
 626	default:
 627		netif_info(pegasus, tx_err, net, "TX status %d\n", status);
 628		fallthrough;
 629	case 0:
 630		break;
 631	}
 632
 633	netif_trans_update(net); /* prevent tx timeout */
 634	netif_wake_queue(net);
 635}
 636
 637static void intr_callback(struct urb *urb)
 638{
 639	pegasus_t *pegasus = urb->context;
 640	struct net_device *net;
 641	int res, status = urb->status;
 642
 643	if (!pegasus)
 644		return;
 645	net = pegasus->net;
 646
 647	switch (status) {
 648	case 0:
 649		break;
 650	case -ECONNRESET:	/* unlink */
 651	case -ENOENT:
 652	case -ESHUTDOWN:
 653		return;
 654	default:
 655		/* some Pegasus-I products report LOTS of data
 656		 * toggle errors... avoid log spamming
 657		 */
 658		netif_dbg(pegasus, timer, net, "intr status %d\n", status);
 659	}
 660
 661	if (urb->actual_length >= 6) {
 662		u8 *d = urb->transfer_buffer;
 663
 664		/* byte 0 == tx_status1, reg 2B */
 665		if (d[0] & (TX_UNDERRUN|EXCESSIVE_COL
 666					|LATE_COL|JABBER_TIMEOUT)) {
 667			net->stats.tx_errors++;
 668			if (d[0] & TX_UNDERRUN)
 669				net->stats.tx_fifo_errors++;
 670			if (d[0] & (EXCESSIVE_COL | JABBER_TIMEOUT))
 671				net->stats.tx_aborted_errors++;
 672			if (d[0] & LATE_COL)
 673				net->stats.tx_window_errors++;
 674		}
 675
 676		/* d[5].LINK_STATUS lies on some adapters.
 677		 * d[0].NO_CARRIER kicks in only with failed TX.
 678		 * ... so monitoring with MII may be safest.
 679		 */
 680
 681		/* bytes 3-4 == rx_lostpkt, reg 2E/2F */
 682		net->stats.rx_missed_errors += ((d[3] & 0x7f) << 8) | d[4];
 683	}
 684
 685	res = usb_submit_urb(urb, GFP_ATOMIC);
 686	if (res == -ENODEV)
 687		netif_device_detach(pegasus->net);
 688	if (res)
 689		netif_err(pegasus, timer, net,
 690			  "can't resubmit interrupt urb, %d\n", res);
 691}
 692
 693static void pegasus_tx_timeout(struct net_device *net, unsigned int txqueue)
 694{
 695	pegasus_t *pegasus = netdev_priv(net);
 696	netif_warn(pegasus, timer, net, "tx timeout\n");
 697	usb_unlink_urb(pegasus->tx_urb);
 698	net->stats.tx_errors++;
 699}
 700
 701static netdev_tx_t pegasus_start_xmit(struct sk_buff *skb,
 702					    struct net_device *net)
 703{
 704	pegasus_t *pegasus = netdev_priv(net);
 705	int count = ((skb->len + 2) & 0x3f) ? skb->len + 2 : skb->len + 3;
 706	int res;
 707	__u16 l16 = skb->len;
 708
 709	netif_stop_queue(net);
 710
 711	((__le16 *) pegasus->tx_buff)[0] = cpu_to_le16(l16);
 712	skb_copy_from_linear_data(skb, pegasus->tx_buff + 2, skb->len);
 713	usb_fill_bulk_urb(pegasus->tx_urb, pegasus->usb,
 714			  usb_sndbulkpipe(pegasus->usb, 2),
 715			  pegasus->tx_buff, count,
 716			  write_bulk_callback, pegasus);
 717	if ((res = usb_submit_urb(pegasus->tx_urb, GFP_ATOMIC))) {
 718		netif_warn(pegasus, tx_err, net, "fail tx, %d\n", res);
 719		switch (res) {
 720		case -EPIPE:		/* stall, or disconnect from TT */
 721			/* cleanup should already have been scheduled */
 722			break;
 723		case -ENODEV:		/* disconnect() upcoming */
 724		case -EPERM:
 725			netif_device_detach(pegasus->net);
 726			break;
 727		default:
 728			net->stats.tx_errors++;
 729			netif_start_queue(net);
 730		}
 731	} else {
 732		net->stats.tx_packets++;
 733		net->stats.tx_bytes += skb->len;
 734	}
 735	dev_kfree_skb(skb);
 736
 737	return NETDEV_TX_OK;
 738}
 739
 740static inline void disable_net_traffic(pegasus_t *pegasus)
 741{
 742	__le16 tmp = cpu_to_le16(0);
 743
 744	set_registers(pegasus, EthCtrl0, sizeof(tmp), &tmp);
 745}
 746
 747static inline int get_interrupt_interval(pegasus_t *pegasus)
 748{
 749	u16 data;
 750	u8 interval;
 751	int ret;
 752
 753	ret = read_eprom_word(pegasus, 4, &data);
 754	if (ret < 0)
 755		return ret;
 756
 757	interval = data >> 8;
 758	if (pegasus->usb->speed != USB_SPEED_HIGH) {
 759		if (interval < 0x80) {
 760			netif_info(pegasus, timer, pegasus->net,
 761				   "intr interval changed from %ums to %ums\n",
 762				   interval, 0x80);
 763			interval = 0x80;
 764			data = (data & 0x00FF) | ((u16)interval << 8);
 765#ifdef PEGASUS_WRITE_EEPROM
 766			write_eprom_word(pegasus, 4, data);
 767#endif
 768		}
 769	}
 770	pegasus->intr_interval = interval;
 771
 772	return 0;
 773}
 774
 775static void set_carrier(struct net_device *net)
 776{
 777	pegasus_t *pegasus = netdev_priv(net);
 778	u16 tmp;
 779
 780	if (read_mii_word(pegasus, pegasus->phy, MII_BMSR, &tmp))
 781		return;
 782
 783	if (tmp & BMSR_LSTATUS)
 784		netif_carrier_on(net);
 785	else
 786		netif_carrier_off(net);
 787}
 788
 789static void free_all_urbs(pegasus_t *pegasus)
 790{
 791	usb_free_urb(pegasus->intr_urb);
 792	usb_free_urb(pegasus->tx_urb);
 793	usb_free_urb(pegasus->rx_urb);
 794}
 795
 796static void unlink_all_urbs(pegasus_t *pegasus)
 797{
 798	usb_kill_urb(pegasus->intr_urb);
 799	usb_kill_urb(pegasus->tx_urb);
 800	usb_kill_urb(pegasus->rx_urb);
 801}
 802
 803static int alloc_urbs(pegasus_t *pegasus)
 804{
 805	int res = -ENOMEM;
 806
 807	pegasus->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
 808	if (!pegasus->rx_urb) {
 809		return res;
 810	}
 811	pegasus->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
 812	if (!pegasus->tx_urb) {
 813		usb_free_urb(pegasus->rx_urb);
 814		return res;
 815	}
 816	pegasus->intr_urb = usb_alloc_urb(0, GFP_KERNEL);
 817	if (!pegasus->intr_urb) {
 818		usb_free_urb(pegasus->tx_urb);
 819		usb_free_urb(pegasus->rx_urb);
 820		return res;
 821	}
 822
 823	return 0;
 824}
 825
 826static int pegasus_open(struct net_device *net)
 827{
 828	pegasus_t *pegasus = netdev_priv(net);
 829	int res=-ENOMEM;
 830
 831	if (pegasus->rx_skb == NULL)
 832		pegasus->rx_skb = __netdev_alloc_skb_ip_align(pegasus->net,
 833							      PEGASUS_MTU,
 834							      GFP_KERNEL);
 835	if (!pegasus->rx_skb)
 836		goto exit;
 837
 838	set_registers(pegasus, EthID, 6, net->dev_addr);
 839
 840	usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
 841			  usb_rcvbulkpipe(pegasus->usb, 1),
 842			  pegasus->rx_skb->data, PEGASUS_MTU,
 843			  read_bulk_callback, pegasus);
 844	if ((res = usb_submit_urb(pegasus->rx_urb, GFP_KERNEL))) {
 845		if (res == -ENODEV)
 846			netif_device_detach(pegasus->net);
 847		netif_dbg(pegasus, ifup, net, "failed rx_urb, %d\n", res);
 848		goto exit;
 849	}
 850
 851	usb_fill_int_urb(pegasus->intr_urb, pegasus->usb,
 852			 usb_rcvintpipe(pegasus->usb, 3),
 853			 pegasus->intr_buff, sizeof(pegasus->intr_buff),
 854			 intr_callback, pegasus, pegasus->intr_interval);
 855	if ((res = usb_submit_urb(pegasus->intr_urb, GFP_KERNEL))) {
 856		if (res == -ENODEV)
 857			netif_device_detach(pegasus->net);
 858		netif_dbg(pegasus, ifup, net, "failed intr_urb, %d\n", res);
 859		usb_kill_urb(pegasus->rx_urb);
 860		goto exit;
 861	}
 862	res = enable_net_traffic(net, pegasus->usb);
 863	if (res < 0) {
 864		netif_dbg(pegasus, ifup, net,
 865			  "can't enable_net_traffic() - %d\n", res);
 866		res = -EIO;
 867		usb_kill_urb(pegasus->rx_urb);
 868		usb_kill_urb(pegasus->intr_urb);
 869		goto exit;
 870	}
 871	set_carrier(net);
 872	netif_start_queue(net);
 873	netif_dbg(pegasus, ifup, net, "open\n");
 874	res = 0;
 875exit:
 876	return res;
 877}
 878
 879static int pegasus_close(struct net_device *net)
 880{
 881	pegasus_t *pegasus = netdev_priv(net);
 882
 883	netif_stop_queue(net);
 884	if (!(pegasus->flags & PEGASUS_UNPLUG))
 885		disable_net_traffic(pegasus);
 886	tasklet_kill(&pegasus->rx_tl);
 887	unlink_all_urbs(pegasus);
 888
 889	return 0;
 890}
 891
 892static void pegasus_get_drvinfo(struct net_device *dev,
 893				struct ethtool_drvinfo *info)
 894{
 895	pegasus_t *pegasus = netdev_priv(dev);
 896
 897	strscpy(info->driver, driver_name, sizeof(info->driver));
 898	usb_make_path(pegasus->usb, info->bus_info, sizeof(info->bus_info));
 899}
 900
 901/* also handles three patterns of some kind in hardware */
 902#define	WOL_SUPPORTED	(WAKE_MAGIC|WAKE_PHY)
 903
 904static void
 905pegasus_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 906{
 907	pegasus_t	*pegasus = netdev_priv(dev);
 908
 909	wol->supported = WAKE_MAGIC | WAKE_PHY;
 910	wol->wolopts = pegasus->wolopts;
 911}
 912
 913static int
 914pegasus_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 915{
 916	pegasus_t	*pegasus = netdev_priv(dev);
 917	u8		reg78 = 0x04;
 918	int		ret;
 919
 920	if (wol->wolopts & ~WOL_SUPPORTED)
 921		return -EINVAL;
 922
 923	if (wol->wolopts & WAKE_MAGIC)
 924		reg78 |= 0x80;
 925	if (wol->wolopts & WAKE_PHY)
 926		reg78 |= 0x40;
 927	/* FIXME this 0x10 bit still needs to get set in the chip... */
 928	if (wol->wolopts)
 929		pegasus->eth_regs[0] |= 0x10;
 930	else
 931		pegasus->eth_regs[0] &= ~0x10;
 932	pegasus->wolopts = wol->wolopts;
 933
 934	ret = set_register(pegasus, WakeupControl, reg78);
 935	if (!ret)
 936		ret = device_set_wakeup_enable(&pegasus->usb->dev,
 937						wol->wolopts);
 938	return ret;
 939}
 940
 941static inline void pegasus_reset_wol(struct net_device *dev)
 942{
 943	struct ethtool_wolinfo wol;
 944
 945	memset(&wol, 0, sizeof wol);
 946	(void) pegasus_set_wol(dev, &wol);
 947}
 948
 949static int
 950pegasus_get_link_ksettings(struct net_device *dev,
 951			   struct ethtool_link_ksettings *ecmd)
 952{
 953	pegasus_t *pegasus;
 954
 955	pegasus = netdev_priv(dev);
 956	mii_ethtool_get_link_ksettings(&pegasus->mii, ecmd);
 957	return 0;
 958}
 959
 960static int
 961pegasus_set_link_ksettings(struct net_device *dev,
 962			   const struct ethtool_link_ksettings *ecmd)
 963{
 964	pegasus_t *pegasus = netdev_priv(dev);
 965	return mii_ethtool_set_link_ksettings(&pegasus->mii, ecmd);
 966}
 967
 968static int pegasus_nway_reset(struct net_device *dev)
 969{
 970	pegasus_t *pegasus = netdev_priv(dev);
 971	return mii_nway_restart(&pegasus->mii);
 972}
 973
 974static u32 pegasus_get_link(struct net_device *dev)
 975{
 976	pegasus_t *pegasus = netdev_priv(dev);
 977	return mii_link_ok(&pegasus->mii);
 978}
 979
 980static u32 pegasus_get_msglevel(struct net_device *dev)
 981{
 982	pegasus_t *pegasus = netdev_priv(dev);
 983	return pegasus->msg_enable;
 984}
 985
 986static void pegasus_set_msglevel(struct net_device *dev, u32 v)
 987{
 988	pegasus_t *pegasus = netdev_priv(dev);
 989	pegasus->msg_enable = v;
 990}
 991
 992static const struct ethtool_ops ops = {
 993	.get_drvinfo = pegasus_get_drvinfo,
 994	.nway_reset = pegasus_nway_reset,
 995	.get_link = pegasus_get_link,
 996	.get_msglevel = pegasus_get_msglevel,
 997	.set_msglevel = pegasus_set_msglevel,
 998	.get_wol = pegasus_get_wol,
 999	.set_wol = pegasus_set_wol,
1000	.get_link_ksettings = pegasus_get_link_ksettings,
1001	.set_link_ksettings = pegasus_set_link_ksettings,
1002};
1003
1004static int pegasus_siocdevprivate(struct net_device *net, struct ifreq *rq,
1005				  void __user *udata, int cmd)
1006{
1007	__u16 *data = (__u16 *) &rq->ifr_ifru;
1008	pegasus_t *pegasus = netdev_priv(net);
1009	int res;
1010
1011	switch (cmd) {
1012	case SIOCDEVPRIVATE:
1013		data[0] = pegasus->phy;
1014		fallthrough;
1015	case SIOCDEVPRIVATE + 1:
1016		res = read_mii_word(pegasus, data[0], data[1] & 0x1f, &data[3]);
1017		break;
1018	case SIOCDEVPRIVATE + 2:
1019		if (!capable(CAP_NET_ADMIN))
1020			return -EPERM;
1021		write_mii_word(pegasus, pegasus->phy, data[1] & 0x1f, &data[2]);
1022		res = 0;
1023		break;
1024	default:
1025		res = -EOPNOTSUPP;
1026	}
1027	return res;
1028}
1029
1030static void pegasus_set_multicast(struct net_device *net)
1031{
1032	pegasus_t *pegasus = netdev_priv(net);
1033
1034	if (net->flags & IFF_PROMISC) {
1035		pegasus->eth_regs[EthCtrl2] |= RX_PROMISCUOUS;
1036		netif_info(pegasus, link, net, "Promiscuous mode enabled\n");
1037	} else if (!netdev_mc_empty(net) || (net->flags & IFF_ALLMULTI)) {
1038		pegasus->eth_regs[EthCtrl0] |= RX_MULTICAST;
1039		pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1040		netif_dbg(pegasus, link, net, "set allmulti\n");
1041	} else {
1042		pegasus->eth_regs[EthCtrl0] &= ~RX_MULTICAST;
1043		pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1044	}
1045	update_eth_regs_async(pegasus);
1046}
1047
1048static __u8 mii_phy_probe(pegasus_t *pegasus)
1049{
1050	int i, ret;
1051	__u16 tmp;
1052
1053	for (i = 0; i < 32; i++) {
1054		ret = read_mii_word(pegasus, i, MII_BMSR, &tmp);
1055		if (ret < 0)
1056			goto fail;
1057		if (tmp == 0 || tmp == 0xffff || (tmp & BMSR_MEDIA) == 0)
1058			continue;
1059		else
1060			return i;
1061	}
1062fail:
1063	return 0xff;
1064}
1065
1066static inline void setup_pegasus_II(pegasus_t *pegasus)
1067{
1068	int ret;
1069	__u8 data = 0xa5;
1070
1071	set_register(pegasus, Reg1d, 0);
1072	set_register(pegasus, Reg7b, 1);
1073	msleep(100);
1074	if ((pegasus->features & HAS_HOME_PNA) && mii_mode)
1075		set_register(pegasus, Reg7b, 0);
1076	else
1077		set_register(pegasus, Reg7b, 2);
1078
1079	set_register(pegasus, 0x83, data);
1080	ret = get_registers(pegasus, 0x83, 1, &data);
1081	if (ret < 0)
1082		goto fail;
1083
1084	if (data == 0xa5)
1085		pegasus->chip = 0x8513;
1086	else
1087		pegasus->chip = 0;
1088
1089	set_register(pegasus, 0x80, 0xc0);
1090	set_register(pegasus, 0x83, 0xff);
1091	set_register(pegasus, 0x84, 0x01);
1092
1093	if (pegasus->features & HAS_HOME_PNA && mii_mode)
1094		set_register(pegasus, Reg81, 6);
1095	else
1096		set_register(pegasus, Reg81, 2);
1097
1098	return;
1099fail:
1100	netif_dbg(pegasus, drv, pegasus->net, "%s failed\n", __func__);
1101}
1102
1103static void check_carrier(struct work_struct *work)
1104{
1105	pegasus_t *pegasus = container_of(work, pegasus_t, carrier_check.work);
1106	set_carrier(pegasus->net);
1107	if (!(pegasus->flags & PEGASUS_UNPLUG)) {
1108		queue_delayed_work(system_long_wq, &pegasus->carrier_check,
1109			CARRIER_CHECK_DELAY);
1110	}
1111}
1112
1113static int pegasus_blacklisted(struct usb_device *udev)
1114{
1115	struct usb_device_descriptor *udd = &udev->descriptor;
1116
1117	/* Special quirk to keep the driver from handling the Belkin Bluetooth
1118	 * dongle which happens to have the same ID.
1119	 */
1120	if ((udd->idVendor == cpu_to_le16(VENDOR_BELKIN)) &&
1121	    (udd->idProduct == cpu_to_le16(0x0121)) &&
1122	    (udd->bDeviceClass == USB_CLASS_WIRELESS_CONTROLLER) &&
1123	    (udd->bDeviceProtocol == 1))
1124		return 1;
1125
1126	return 0;
1127}
1128
1129static int pegasus_probe(struct usb_interface *intf,
1130			 const struct usb_device_id *id)
1131{
1132	struct usb_device *dev = interface_to_usbdev(intf);
1133	struct net_device *net;
1134	pegasus_t *pegasus;
1135	int dev_index = id - pegasus_ids;
1136	int res = -ENOMEM;
1137
1138	if (pegasus_blacklisted(dev))
1139		return -ENODEV;
1140
1141	net = alloc_etherdev(sizeof(struct pegasus));
1142	if (!net)
1143		goto out;
1144
1145	pegasus = netdev_priv(net);
1146	pegasus->dev_index = dev_index;
1147
1148	res = alloc_urbs(pegasus);
1149	if (res < 0) {
1150		dev_err(&intf->dev, "can't allocate %s\n", "urbs");
1151		goto out1;
1152	}
1153
1154	tasklet_setup(&pegasus->rx_tl, rx_fixup);
1155
1156	INIT_DELAYED_WORK(&pegasus->carrier_check, check_carrier);
1157
1158	pegasus->intf = intf;
1159	pegasus->usb = dev;
1160	pegasus->net = net;
1161
1162
1163	net->watchdog_timeo = PEGASUS_TX_TIMEOUT;
1164	net->netdev_ops = &pegasus_netdev_ops;
1165	net->ethtool_ops = &ops;
1166	pegasus->mii.dev = net;
1167	pegasus->mii.mdio_read = mdio_read;
1168	pegasus->mii.mdio_write = mdio_write;
1169	pegasus->mii.phy_id_mask = 0x1f;
1170	pegasus->mii.reg_num_mask = 0x1f;
1171	pegasus->msg_enable = netif_msg_init(msg_level, NETIF_MSG_DRV
1172				| NETIF_MSG_PROBE | NETIF_MSG_LINK);
1173
1174	pegasus->features = usb_dev_id[dev_index].private;
1175	res = get_interrupt_interval(pegasus);
1176	if (res)
1177		goto out2;
1178	if (reset_mac(pegasus)) {
1179		dev_err(&intf->dev, "can't reset MAC\n");
1180		res = -EIO;
1181		goto out2;
1182	}
1183	set_ethernet_addr(pegasus);
1184	if (pegasus->features & PEGASUS_II) {
1185		dev_info(&intf->dev, "setup Pegasus II specific registers\n");
1186		setup_pegasus_II(pegasus);
1187	}
1188	pegasus->phy = mii_phy_probe(pegasus);
1189	if (pegasus->phy == 0xff) {
1190		dev_warn(&intf->dev, "can't locate MII phy, using default\n");
1191		pegasus->phy = 1;
1192	}
1193	pegasus->mii.phy_id = pegasus->phy;
1194	usb_set_intfdata(intf, pegasus);
1195	SET_NETDEV_DEV(net, &intf->dev);
1196	pegasus_reset_wol(net);
1197	res = register_netdev(net);
1198	if (res)
1199		goto out3;
1200	queue_delayed_work(system_long_wq, &pegasus->carrier_check,
1201			   CARRIER_CHECK_DELAY);
1202	dev_info(&intf->dev, "%s, %s, %pM\n", net->name,
1203		 usb_dev_id[dev_index].name, net->dev_addr);
1204	return 0;
1205
1206out3:
1207	usb_set_intfdata(intf, NULL);
1208out2:
1209	free_all_urbs(pegasus);
1210out1:
1211	free_netdev(net);
1212out:
1213	return res;
1214}
1215
1216static void pegasus_disconnect(struct usb_interface *intf)
1217{
1218	struct pegasus *pegasus = usb_get_intfdata(intf);
1219
1220	usb_set_intfdata(intf, NULL);
1221	if (!pegasus) {
1222		dev_dbg(&intf->dev, "unregistering non-bound device?\n");
1223		return;
1224	}
1225
1226	pegasus->flags |= PEGASUS_UNPLUG;
1227	cancel_delayed_work_sync(&pegasus->carrier_check);
1228	unregister_netdev(pegasus->net);
1229	unlink_all_urbs(pegasus);
1230	free_all_urbs(pegasus);
1231	if (pegasus->rx_skb != NULL) {
1232		dev_kfree_skb(pegasus->rx_skb);
1233		pegasus->rx_skb = NULL;
1234	}
1235	free_netdev(pegasus->net);
1236}
1237
1238static int pegasus_suspend(struct usb_interface *intf, pm_message_t message)
1239{
1240	struct pegasus *pegasus = usb_get_intfdata(intf);
1241
1242	netif_device_detach(pegasus->net);
1243	cancel_delayed_work_sync(&pegasus->carrier_check);
1244	if (netif_running(pegasus->net)) {
1245		usb_kill_urb(pegasus->rx_urb);
1246		usb_kill_urb(pegasus->intr_urb);
1247	}
1248	return 0;
1249}
1250
1251static int pegasus_resume(struct usb_interface *intf)
1252{
1253	struct pegasus *pegasus = usb_get_intfdata(intf);
1254
1255	netif_device_attach(pegasus->net);
1256	if (netif_running(pegasus->net)) {
1257		pegasus->rx_urb->status = 0;
1258		pegasus->rx_urb->actual_length = 0;
1259		read_bulk_callback(pegasus->rx_urb);
1260
1261		pegasus->intr_urb->status = 0;
1262		pegasus->intr_urb->actual_length = 0;
1263		intr_callback(pegasus->intr_urb);
1264	}
1265	queue_delayed_work(system_long_wq, &pegasus->carrier_check,
1266				CARRIER_CHECK_DELAY);
1267	return 0;
1268}
1269
1270static const struct net_device_ops pegasus_netdev_ops = {
1271	.ndo_open =			pegasus_open,
1272	.ndo_stop =			pegasus_close,
1273	.ndo_siocdevprivate =		pegasus_siocdevprivate,
1274	.ndo_start_xmit =		pegasus_start_xmit,
1275	.ndo_set_rx_mode =		pegasus_set_multicast,
1276	.ndo_tx_timeout =		pegasus_tx_timeout,
1277	.ndo_set_mac_address =		eth_mac_addr,
1278	.ndo_validate_addr =		eth_validate_addr,
1279};
1280
1281static struct usb_driver pegasus_driver = {
1282	.name = driver_name,
1283	.probe = pegasus_probe,
1284	.disconnect = pegasus_disconnect,
1285	.id_table = pegasus_ids,
1286	.suspend = pegasus_suspend,
1287	.resume = pegasus_resume,
1288	.disable_hub_initiated_lpm = 1,
1289};
1290
1291static void __init parse_id(char *id)
1292{
1293	unsigned int vendor_id = 0, device_id = 0, flags = 0, i = 0;
1294	char *token, *name = NULL;
1295
1296	if ((token = strsep(&id, ":")) != NULL)
1297		name = token;
1298	/* name now points to a null terminated string*/
1299	if ((token = strsep(&id, ":")) != NULL)
1300		vendor_id = simple_strtoul(token, NULL, 16);
1301	if ((token = strsep(&id, ":")) != NULL)
1302		device_id = simple_strtoul(token, NULL, 16);
1303	flags = simple_strtoul(id, NULL, 16);
1304	pr_info("%s: new device %s, vendor ID 0x%04x, device ID 0x%04x, flags: 0x%x\n",
1305		driver_name, name, vendor_id, device_id, flags);
1306
1307	if (vendor_id > 0x10000 || vendor_id == 0)
1308		return;
1309	if (device_id > 0x10000 || device_id == 0)
1310		return;
1311
1312	for (i = 0; usb_dev_id[i].name; i++);
1313	usb_dev_id[i].name = name;
1314	usb_dev_id[i].vendor = vendor_id;
1315	usb_dev_id[i].device = device_id;
1316	usb_dev_id[i].private = flags;
1317	pegasus_ids[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
1318	pegasus_ids[i].idVendor = vendor_id;
1319	pegasus_ids[i].idProduct = device_id;
1320}
1321
1322static int __init pegasus_init(void)
1323{
1324	pr_info("%s: " DRIVER_DESC "\n", driver_name);
1325	if (devid)
1326		parse_id(devid);
1327	return usb_register(&pegasus_driver);
1328}
1329
1330static void __exit pegasus_exit(void)
1331{
1332	usb_deregister(&pegasus_driver);
1333}
1334
1335module_init(pegasus_init);
1336module_exit(pegasus_exit);