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/drivers/net/usb/catc.c

http://github.com/mirrors/linux
C | 969 lines | 721 code | 182 blank | 66 comment | 97 complexity | 49865995745808a0dbaebaae2119c1c9 MD5 | raw file
  1// SPDX-License-Identifier: GPL-2.0-or-later
  2/*
  3 *  Copyright (c) 2001 Vojtech Pavlik
  4 *
  5 *  CATC EL1210A NetMate USB Ethernet driver
  6 *
  7 *  Sponsored by SuSE
  8 *
  9 *  Based on the work of
 10 *		Donald Becker
 11 * 
 12 *  Old chipset support added by Simon Evans <spse@secret.org.uk> 2002
 13 *    - adds support for Belkin F5U011
 14 */
 15
 16/*
 17 * 
 18 * Should you need to contact me, the author, you can do so either by
 19 * e-mail - mail your message to <vojtech@suse.cz>, or by paper mail:
 20 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
 21 */
 22
 23#include <linux/module.h>
 24#include <linux/kernel.h>
 25#include <linux/string.h>
 26#include <linux/netdevice.h>
 27#include <linux/etherdevice.h>
 28#include <linux/skbuff.h>
 29#include <linux/spinlock.h>
 30#include <linux/ethtool.h>
 31#include <linux/crc32.h>
 32#include <linux/bitops.h>
 33#include <linux/gfp.h>
 34#include <linux/uaccess.h>
 35
 36#undef DEBUG
 37
 38#include <linux/usb.h>
 39
 40/*
 41 * Version information.
 42 */
 43
 44#define DRIVER_VERSION "v2.8"
 45#define DRIVER_AUTHOR "Vojtech Pavlik <vojtech@suse.cz>"
 46#define DRIVER_DESC "CATC EL1210A NetMate USB Ethernet driver"
 47#define SHORT_DRIVER_DESC "EL1210A NetMate USB Ethernet"
 48
 49MODULE_AUTHOR(DRIVER_AUTHOR);
 50MODULE_DESCRIPTION(DRIVER_DESC);
 51MODULE_LICENSE("GPL");
 52
 53static const char driver_name[] = "catc";
 54
 55/*
 56 * Some defines.
 57 */ 
 58
 59#define STATS_UPDATE		(HZ)	/* Time between stats updates */
 60#define TX_TIMEOUT		(5*HZ)	/* Max time the queue can be stopped */
 61#define PKT_SZ			1536	/* Max Ethernet packet size */
 62#define RX_MAX_BURST		15	/* Max packets per rx buffer (> 0, < 16) */
 63#define TX_MAX_BURST		15	/* Max full sized packets per tx buffer (> 0) */
 64#define CTRL_QUEUE		16	/* Max control requests in flight (power of two) */
 65#define RX_PKT_SZ		1600	/* Max size of receive packet for F5U011 */
 66
 67/*
 68 * Control requests.
 69 */
 70
 71enum control_requests {
 72	ReadMem =	0xf1,
 73	GetMac =	0xf2,
 74	Reset =		0xf4,
 75	SetMac =	0xf5,
 76	SetRxMode =     0xf5,  /* F5U011 only */
 77	WriteROM =	0xf8,
 78	SetReg =	0xfa,
 79	GetReg =	0xfb,
 80	WriteMem =	0xfc,
 81	ReadROM =	0xfd,
 82};
 83
 84/*
 85 * Registers.
 86 */
 87
 88enum register_offsets {
 89	TxBufCount =	0x20,
 90	RxBufCount =	0x21,
 91	OpModes =	0x22,
 92	TxQed =		0x23,
 93	RxQed =		0x24,
 94	MaxBurst =	0x25,
 95	RxUnit =	0x60,
 96	EthStatus =	0x61,
 97	StationAddr0 =	0x67,
 98	EthStats =	0x69,
 99	LEDCtrl =	0x81,
100};
101
102enum eth_stats {
103	TxSingleColl =	0x00,
104        TxMultiColl =	0x02,
105        TxExcessColl =	0x04,
106        RxFramErr =	0x06,
107};
108
109enum op_mode_bits {
110	Op3MemWaits =	0x03,
111	OpLenInclude =	0x08,
112	OpRxMerge =	0x10,
113	OpTxMerge =	0x20,
114	OpWin95bugfix =	0x40,
115	OpLoopback =	0x80,
116};
117
118enum rx_filter_bits {
119	RxEnable =	0x01,
120	RxPolarity =	0x02,
121	RxForceOK =	0x04,
122	RxMultiCast =	0x08,
123	RxPromisc =	0x10,
124	AltRxPromisc =  0x20, /* F5U011 uses different bit */
125};
126
127enum led_values {
128	LEDFast = 	0x01,
129	LEDSlow =	0x02,
130	LEDFlash =	0x03,
131	LEDPulse =	0x04,
132	LEDLink =	0x08,
133};
134
135enum link_status {
136	LinkNoChange = 0,
137	LinkGood     = 1,
138	LinkBad      = 2
139};
140
141/*
142 * The catc struct.
143 */
144
145#define CTRL_RUNNING	0
146#define RX_RUNNING	1
147#define TX_RUNNING	2
148
149struct catc {
150	struct net_device *netdev;
151	struct usb_device *usbdev;
152
153	unsigned long flags;
154
155	unsigned int tx_ptr, tx_idx;
156	unsigned int ctrl_head, ctrl_tail;
157	spinlock_t tx_lock, ctrl_lock;
158
159	u8 tx_buf[2][TX_MAX_BURST * (PKT_SZ + 2)];
160	u8 rx_buf[RX_MAX_BURST * (PKT_SZ + 2)];
161	u8 irq_buf[2];
162	u8 ctrl_buf[64];
163	struct usb_ctrlrequest ctrl_dr;
164
165	struct timer_list timer;
166	u8 stats_buf[8];
167	u16 stats_vals[4];
168	unsigned long last_stats;
169
170	u8 multicast[64];
171
172	struct ctrl_queue {
173		u8 dir;
174		u8 request;
175		u16 value;
176		u16 index;
177		void *buf;
178		int len;
179		void (*callback)(struct catc *catc, struct ctrl_queue *q);
180	} ctrl_queue[CTRL_QUEUE];
181
182	struct urb *tx_urb, *rx_urb, *irq_urb, *ctrl_urb;
183
184	u8 is_f5u011;	/* Set if device is an F5U011 */
185	u8 rxmode[2];	/* Used for F5U011 */
186	atomic_t recq_sz; /* Used for F5U011 - counter of waiting rx packets */
187};
188
189/*
190 * Useful macros.
191 */
192
193#define catc_get_mac(catc, mac)				catc_ctrl_msg(catc, USB_DIR_IN,  GetMac, 0, 0, mac,  6)
194#define catc_reset(catc)				catc_ctrl_msg(catc, USB_DIR_OUT, Reset, 0, 0, NULL, 0)
195#define catc_set_reg(catc, reg, val)			catc_ctrl_msg(catc, USB_DIR_OUT, SetReg, val, reg, NULL, 0)
196#define catc_get_reg(catc, reg, buf)			catc_ctrl_msg(catc, USB_DIR_IN,  GetReg, 0, reg, buf, 1)
197#define catc_write_mem(catc, addr, buf, size)		catc_ctrl_msg(catc, USB_DIR_OUT, WriteMem, 0, addr, buf, size)
198#define catc_read_mem(catc, addr, buf, size)		catc_ctrl_msg(catc, USB_DIR_IN,  ReadMem, 0, addr, buf, size)
199
200#define f5u011_rxmode(catc, rxmode)			catc_ctrl_msg(catc, USB_DIR_OUT, SetRxMode, 0, 1, rxmode, 2)
201#define f5u011_rxmode_async(catc, rxmode)		catc_ctrl_async(catc, USB_DIR_OUT, SetRxMode, 0, 1, &rxmode, 2, NULL)
202#define f5u011_mchash_async(catc, hash)			catc_ctrl_async(catc, USB_DIR_OUT, SetRxMode, 0, 2, &hash, 8, NULL)
203
204#define catc_set_reg_async(catc, reg, val)		catc_ctrl_async(catc, USB_DIR_OUT, SetReg, val, reg, NULL, 0, NULL)
205#define catc_get_reg_async(catc, reg, cb)		catc_ctrl_async(catc, USB_DIR_IN, GetReg, 0, reg, NULL, 1, cb)
206#define catc_write_mem_async(catc, addr, buf, size)	catc_ctrl_async(catc, USB_DIR_OUT, WriteMem, 0, addr, buf, size, NULL)
207
208/*
209 * Receive routines.
210 */
211
212static void catc_rx_done(struct urb *urb)
213{
214	struct catc *catc = urb->context;
215	u8 *pkt_start = urb->transfer_buffer;
216	struct sk_buff *skb;
217	int pkt_len, pkt_offset = 0;
218	int status = urb->status;
219
220	if (!catc->is_f5u011) {
221		clear_bit(RX_RUNNING, &catc->flags);
222		pkt_offset = 2;
223	}
224
225	if (status) {
226		dev_dbg(&urb->dev->dev, "rx_done, status %d, length %d\n",
227			status, urb->actual_length);
228		return;
229	}
230
231	do {
232		if(!catc->is_f5u011) {
233			pkt_len = le16_to_cpup((__le16*)pkt_start);
234			if (pkt_len > urb->actual_length) {
235				catc->netdev->stats.rx_length_errors++;
236				catc->netdev->stats.rx_errors++;
237				break;
238			}
239		} else {
240			pkt_len = urb->actual_length;
241		}
242
243		if (!(skb = dev_alloc_skb(pkt_len)))
244			return;
245
246		skb_copy_to_linear_data(skb, pkt_start + pkt_offset, pkt_len);
247		skb_put(skb, pkt_len);
248
249		skb->protocol = eth_type_trans(skb, catc->netdev);
250		netif_rx(skb);
251
252		catc->netdev->stats.rx_packets++;
253		catc->netdev->stats.rx_bytes += pkt_len;
254
255		/* F5U011 only does one packet per RX */
256		if (catc->is_f5u011)
257			break;
258		pkt_start += (((pkt_len + 1) >> 6) + 1) << 6;
259
260	} while (pkt_start - (u8 *) urb->transfer_buffer < urb->actual_length);
261
262	if (catc->is_f5u011) {
263		if (atomic_read(&catc->recq_sz)) {
264			int state;
265			atomic_dec(&catc->recq_sz);
266			netdev_dbg(catc->netdev, "getting extra packet\n");
267			urb->dev = catc->usbdev;
268			if ((state = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
269				netdev_dbg(catc->netdev,
270					   "submit(rx_urb) status %d\n", state);
271			}
272		} else {
273			clear_bit(RX_RUNNING, &catc->flags);
274		}
275	}
276}
277
278static void catc_irq_done(struct urb *urb)
279{
280	struct catc *catc = urb->context;
281	u8 *data = urb->transfer_buffer;
282	int status = urb->status;
283	unsigned int hasdata = 0, linksts = LinkNoChange;
284	int res;
285
286	if (!catc->is_f5u011) {
287		hasdata = data[1] & 0x80;
288		if (data[1] & 0x40)
289			linksts = LinkGood;
290		else if (data[1] & 0x20)
291			linksts = LinkBad;
292	} else {
293		hasdata = (unsigned int)(be16_to_cpup((__be16*)data) & 0x0fff);
294		if (data[0] == 0x90)
295			linksts = LinkGood;
296		else if (data[0] == 0xA0)
297			linksts = LinkBad;
298	}
299
300	switch (status) {
301	case 0:			/* success */
302		break;
303	case -ECONNRESET:	/* unlink */
304	case -ENOENT:
305	case -ESHUTDOWN:
306		return;
307	/* -EPIPE:  should clear the halt */
308	default:		/* error */
309		dev_dbg(&urb->dev->dev,
310			"irq_done, status %d, data %02x %02x.\n",
311			status, data[0], data[1]);
312		goto resubmit;
313	}
314
315	if (linksts == LinkGood) {
316		netif_carrier_on(catc->netdev);
317		netdev_dbg(catc->netdev, "link ok\n");
318	}
319
320	if (linksts == LinkBad) {
321		netif_carrier_off(catc->netdev);
322		netdev_dbg(catc->netdev, "link bad\n");
323	}
324
325	if (hasdata) {
326		if (test_and_set_bit(RX_RUNNING, &catc->flags)) {
327			if (catc->is_f5u011)
328				atomic_inc(&catc->recq_sz);
329		} else {
330			catc->rx_urb->dev = catc->usbdev;
331			if ((res = usb_submit_urb(catc->rx_urb, GFP_ATOMIC)) < 0) {
332				dev_err(&catc->usbdev->dev,
333					"submit(rx_urb) status %d\n", res);
334			}
335		} 
336	}
337resubmit:
338	res = usb_submit_urb (urb, GFP_ATOMIC);
339	if (res)
340		dev_err(&catc->usbdev->dev,
341			"can't resubmit intr, %s-%s, status %d\n",
342			catc->usbdev->bus->bus_name,
343			catc->usbdev->devpath, res);
344}
345
346/*
347 * Transmit routines.
348 */
349
350static int catc_tx_run(struct catc *catc)
351{
352	int status;
353
354	if (catc->is_f5u011)
355		catc->tx_ptr = (catc->tx_ptr + 63) & ~63;
356
357	catc->tx_urb->transfer_buffer_length = catc->tx_ptr;
358	catc->tx_urb->transfer_buffer = catc->tx_buf[catc->tx_idx];
359	catc->tx_urb->dev = catc->usbdev;
360
361	if ((status = usb_submit_urb(catc->tx_urb, GFP_ATOMIC)) < 0)
362		dev_err(&catc->usbdev->dev, "submit(tx_urb), status %d\n",
363			status);
364
365	catc->tx_idx = !catc->tx_idx;
366	catc->tx_ptr = 0;
367
368	netif_trans_update(catc->netdev);
369	return status;
370}
371
372static void catc_tx_done(struct urb *urb)
373{
374	struct catc *catc = urb->context;
375	unsigned long flags;
376	int r, status = urb->status;
377
378	if (status == -ECONNRESET) {
379		dev_dbg(&urb->dev->dev, "Tx Reset.\n");
380		urb->status = 0;
381		netif_trans_update(catc->netdev);
382		catc->netdev->stats.tx_errors++;
383		clear_bit(TX_RUNNING, &catc->flags);
384		netif_wake_queue(catc->netdev);
385		return;
386	}
387
388	if (status) {
389		dev_dbg(&urb->dev->dev, "tx_done, status %d, length %d\n",
390			status, urb->actual_length);
391		return;
392	}
393
394	spin_lock_irqsave(&catc->tx_lock, flags);
395
396	if (catc->tx_ptr) {
397		r = catc_tx_run(catc);
398		if (unlikely(r < 0))
399			clear_bit(TX_RUNNING, &catc->flags);
400	} else {
401		clear_bit(TX_RUNNING, &catc->flags);
402	}
403
404	netif_wake_queue(catc->netdev);
405
406	spin_unlock_irqrestore(&catc->tx_lock, flags);
407}
408
409static netdev_tx_t catc_start_xmit(struct sk_buff *skb,
410					 struct net_device *netdev)
411{
412	struct catc *catc = netdev_priv(netdev);
413	unsigned long flags;
414	int r = 0;
415	char *tx_buf;
416
417	spin_lock_irqsave(&catc->tx_lock, flags);
418
419	catc->tx_ptr = (((catc->tx_ptr - 1) >> 6) + 1) << 6;
420	tx_buf = catc->tx_buf[catc->tx_idx] + catc->tx_ptr;
421	if (catc->is_f5u011)
422		*(__be16 *)tx_buf = cpu_to_be16(skb->len);
423	else
424		*(__le16 *)tx_buf = cpu_to_le16(skb->len);
425	skb_copy_from_linear_data(skb, tx_buf + 2, skb->len);
426	catc->tx_ptr += skb->len + 2;
427
428	if (!test_and_set_bit(TX_RUNNING, &catc->flags)) {
429		r = catc_tx_run(catc);
430		if (r < 0)
431			clear_bit(TX_RUNNING, &catc->flags);
432	}
433
434	if ((catc->is_f5u011 && catc->tx_ptr) ||
435	    (catc->tx_ptr >= ((TX_MAX_BURST - 1) * (PKT_SZ + 2))))
436		netif_stop_queue(netdev);
437
438	spin_unlock_irqrestore(&catc->tx_lock, flags);
439
440	if (r >= 0) {
441		catc->netdev->stats.tx_bytes += skb->len;
442		catc->netdev->stats.tx_packets++;
443	}
444
445	dev_kfree_skb(skb);
446
447	return NETDEV_TX_OK;
448}
449
450static void catc_tx_timeout(struct net_device *netdev, unsigned int txqueue)
451{
452	struct catc *catc = netdev_priv(netdev);
453
454	dev_warn(&netdev->dev, "Transmit timed out.\n");
455	usb_unlink_urb(catc->tx_urb);
456}
457
458/*
459 * Control messages.
460 */
461
462static int catc_ctrl_msg(struct catc *catc, u8 dir, u8 request, u16 value, u16 index, void *buf, int len)
463{
464        int retval = usb_control_msg(catc->usbdev,
465		dir ? usb_rcvctrlpipe(catc->usbdev, 0) : usb_sndctrlpipe(catc->usbdev, 0),
466		 request, 0x40 | dir, value, index, buf, len, 1000);
467        return retval < 0 ? retval : 0;
468}
469
470static void catc_ctrl_run(struct catc *catc)
471{
472	struct ctrl_queue *q = catc->ctrl_queue + catc->ctrl_tail;
473	struct usb_device *usbdev = catc->usbdev;
474	struct urb *urb = catc->ctrl_urb;
475	struct usb_ctrlrequest *dr = &catc->ctrl_dr;
476	int status;
477
478	dr->bRequest = q->request;
479	dr->bRequestType = 0x40 | q->dir;
480	dr->wValue = cpu_to_le16(q->value);
481	dr->wIndex = cpu_to_le16(q->index);
482	dr->wLength = cpu_to_le16(q->len);
483
484        urb->pipe = q->dir ? usb_rcvctrlpipe(usbdev, 0) : usb_sndctrlpipe(usbdev, 0);
485	urb->transfer_buffer_length = q->len;
486	urb->transfer_buffer = catc->ctrl_buf;
487	urb->setup_packet = (void *) dr;
488	urb->dev = usbdev;
489
490	if (!q->dir && q->buf && q->len)
491		memcpy(catc->ctrl_buf, q->buf, q->len);
492
493	if ((status = usb_submit_urb(catc->ctrl_urb, GFP_ATOMIC)))
494		dev_err(&catc->usbdev->dev, "submit(ctrl_urb) status %d\n",
495			status);
496}
497
498static void catc_ctrl_done(struct urb *urb)
499{
500	struct catc *catc = urb->context;
501	struct ctrl_queue *q;
502	unsigned long flags;
503	int status = urb->status;
504
505	if (status)
506		dev_dbg(&urb->dev->dev, "ctrl_done, status %d, len %d.\n",
507			status, urb->actual_length);
508
509	spin_lock_irqsave(&catc->ctrl_lock, flags);
510
511	q = catc->ctrl_queue + catc->ctrl_tail;
512
513	if (q->dir) {
514		if (q->buf && q->len)
515			memcpy(q->buf, catc->ctrl_buf, q->len);
516		else
517			q->buf = catc->ctrl_buf;
518	}
519
520	if (q->callback)
521		q->callback(catc, q);
522
523	catc->ctrl_tail = (catc->ctrl_tail + 1) & (CTRL_QUEUE - 1);
524
525	if (catc->ctrl_head != catc->ctrl_tail)
526		catc_ctrl_run(catc);
527	else
528		clear_bit(CTRL_RUNNING, &catc->flags);
529
530	spin_unlock_irqrestore(&catc->ctrl_lock, flags);
531}
532
533static int catc_ctrl_async(struct catc *catc, u8 dir, u8 request, u16 value,
534	u16 index, void *buf, int len, void (*callback)(struct catc *catc, struct ctrl_queue *q))
535{
536	struct ctrl_queue *q;
537	int retval = 0;
538	unsigned long flags;
539
540	spin_lock_irqsave(&catc->ctrl_lock, flags);
541	
542	q = catc->ctrl_queue + catc->ctrl_head;
543
544	q->dir = dir;
545	q->request = request;
546	q->value = value;
547	q->index = index;
548	q->buf = buf;
549	q->len = len;
550	q->callback = callback;
551
552	catc->ctrl_head = (catc->ctrl_head + 1) & (CTRL_QUEUE - 1);
553
554	if (catc->ctrl_head == catc->ctrl_tail) {
555		dev_err(&catc->usbdev->dev, "ctrl queue full\n");
556		catc->ctrl_tail = (catc->ctrl_tail + 1) & (CTRL_QUEUE - 1);
557		retval = -1;
558	}
559
560	if (!test_and_set_bit(CTRL_RUNNING, &catc->flags))
561		catc_ctrl_run(catc);
562
563	spin_unlock_irqrestore(&catc->ctrl_lock, flags);
564
565	return retval;
566}
567
568/*
569 * Statistics.
570 */
571
572static void catc_stats_done(struct catc *catc, struct ctrl_queue *q)
573{
574	int index = q->index - EthStats;
575	u16 data, last;
576
577	catc->stats_buf[index] = *((char *)q->buf);
578
579	if (index & 1)
580		return;
581
582	data = ((u16)catc->stats_buf[index] << 8) | catc->stats_buf[index + 1];
583	last = catc->stats_vals[index >> 1];
584
585	switch (index) {
586		case TxSingleColl:
587		case TxMultiColl:
588			catc->netdev->stats.collisions += data - last;
589			break;
590		case TxExcessColl:
591			catc->netdev->stats.tx_aborted_errors += data - last;
592			catc->netdev->stats.tx_errors += data - last;
593			break;
594		case RxFramErr:
595			catc->netdev->stats.rx_frame_errors += data - last;
596			catc->netdev->stats.rx_errors += data - last;
597			break;
598	}
599
600	catc->stats_vals[index >> 1] = data;
601}
602
603static void catc_stats_timer(struct timer_list *t)
604{
605	struct catc *catc = from_timer(catc, t, timer);
606	int i;
607
608	for (i = 0; i < 8; i++)
609		catc_get_reg_async(catc, EthStats + 7 - i, catc_stats_done);
610
611	mod_timer(&catc->timer, jiffies + STATS_UPDATE);
612}
613
614/*
615 * Receive modes. Broadcast, Multicast, Promisc.
616 */
617
618static void catc_multicast(unsigned char *addr, u8 *multicast)
619{
620	u32 crc;
621
622	crc = ether_crc_le(6, addr);
623	multicast[(crc >> 3) & 0x3f] |= 1 << (crc & 7);
624}
625
626static void catc_set_multicast_list(struct net_device *netdev)
627{
628	struct catc *catc = netdev_priv(netdev);
629	struct netdev_hw_addr *ha;
630	u8 broadcast[ETH_ALEN];
631	u8 rx = RxEnable | RxPolarity | RxMultiCast;
632
633	eth_broadcast_addr(broadcast);
634	memset(catc->multicast, 0, 64);
635
636	catc_multicast(broadcast, catc->multicast);
637	catc_multicast(netdev->dev_addr, catc->multicast);
638
639	if (netdev->flags & IFF_PROMISC) {
640		memset(catc->multicast, 0xff, 64);
641		rx |= (!catc->is_f5u011) ? RxPromisc : AltRxPromisc;
642	} 
643
644	if (netdev->flags & IFF_ALLMULTI) {
645		memset(catc->multicast, 0xff, 64);
646	} else {
647		netdev_for_each_mc_addr(ha, netdev) {
648			u32 crc = ether_crc_le(6, ha->addr);
649			if (!catc->is_f5u011) {
650				catc->multicast[(crc >> 3) & 0x3f] |= 1 << (crc & 7);
651			} else {
652				catc->multicast[7-(crc >> 29)] |= 1 << ((crc >> 26) & 7);
653			}
654		}
655	}
656	if (!catc->is_f5u011) {
657		catc_set_reg_async(catc, RxUnit, rx);
658		catc_write_mem_async(catc, 0xfa80, catc->multicast, 64);
659	} else {
660		f5u011_mchash_async(catc, catc->multicast);
661		if (catc->rxmode[0] != rx) {
662			catc->rxmode[0] = rx;
663			netdev_dbg(catc->netdev,
664				   "Setting RX mode to %2.2X %2.2X\n",
665				   catc->rxmode[0], catc->rxmode[1]);
666			f5u011_rxmode_async(catc, catc->rxmode);
667		}
668	}
669}
670
671static void catc_get_drvinfo(struct net_device *dev,
672			     struct ethtool_drvinfo *info)
673{
674	struct catc *catc = netdev_priv(dev);
675	strlcpy(info->driver, driver_name, sizeof(info->driver));
676	strlcpy(info->version, DRIVER_VERSION, sizeof(info->version));
677	usb_make_path(catc->usbdev, info->bus_info, sizeof(info->bus_info));
678}
679
680static int catc_get_link_ksettings(struct net_device *dev,
681				   struct ethtool_link_ksettings *cmd)
682{
683	struct catc *catc = netdev_priv(dev);
684	if (!catc->is_f5u011)
685		return -EOPNOTSUPP;
686
687	ethtool_link_ksettings_zero_link_mode(cmd, supported);
688	ethtool_link_ksettings_add_link_mode(cmd, supported, 10baseT_Half);
689	ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
690
691	ethtool_link_ksettings_zero_link_mode(cmd, advertising);
692	ethtool_link_ksettings_add_link_mode(cmd, advertising, 10baseT_Half);
693	ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
694
695	cmd->base.speed = SPEED_10;
696	cmd->base.duplex = DUPLEX_HALF;
697	cmd->base.port = PORT_TP;
698	cmd->base.phy_address = 0;
699	cmd->base.autoneg = AUTONEG_DISABLE;
700
701	return 0;
702}
703
704static const struct ethtool_ops ops = {
705	.get_drvinfo = catc_get_drvinfo,
706	.get_link = ethtool_op_get_link,
707	.get_link_ksettings = catc_get_link_ksettings,
708};
709
710/*
711 * Open, close.
712 */
713
714static int catc_open(struct net_device *netdev)
715{
716	struct catc *catc = netdev_priv(netdev);
717	int status;
718
719	catc->irq_urb->dev = catc->usbdev;
720	if ((status = usb_submit_urb(catc->irq_urb, GFP_KERNEL)) < 0) {
721		dev_err(&catc->usbdev->dev, "submit(irq_urb) status %d\n",
722			status);
723		return -1;
724	}
725
726	netif_start_queue(netdev);
727
728	if (!catc->is_f5u011)
729		mod_timer(&catc->timer, jiffies + STATS_UPDATE);
730
731	return 0;
732}
733
734static int catc_stop(struct net_device *netdev)
735{
736	struct catc *catc = netdev_priv(netdev);
737
738	netif_stop_queue(netdev);
739
740	if (!catc->is_f5u011)
741		del_timer_sync(&catc->timer);
742
743	usb_kill_urb(catc->rx_urb);
744	usb_kill_urb(catc->tx_urb);
745	usb_kill_urb(catc->irq_urb);
746	usb_kill_urb(catc->ctrl_urb);
747
748	return 0;
749}
750
751static const struct net_device_ops catc_netdev_ops = {
752	.ndo_open		= catc_open,
753	.ndo_stop		= catc_stop,
754	.ndo_start_xmit		= catc_start_xmit,
755
756	.ndo_tx_timeout		= catc_tx_timeout,
757	.ndo_set_rx_mode	= catc_set_multicast_list,
758	.ndo_set_mac_address 	= eth_mac_addr,
759	.ndo_validate_addr	= eth_validate_addr,
760};
761
762/*
763 * USB probe, disconnect.
764 */
765
766static int catc_probe(struct usb_interface *intf, const struct usb_device_id *id)
767{
768	struct device *dev = &intf->dev;
769	struct usb_device *usbdev = interface_to_usbdev(intf);
770	struct net_device *netdev;
771	struct catc *catc;
772	u8 broadcast[ETH_ALEN];
773	int pktsz, ret;
774
775	if (usb_set_interface(usbdev,
776			intf->altsetting->desc.bInterfaceNumber, 1)) {
777		dev_err(dev, "Can't set altsetting 1.\n");
778		return -EIO;
779	}
780
781	netdev = alloc_etherdev(sizeof(struct catc));
782	if (!netdev)
783		return -ENOMEM;
784
785	catc = netdev_priv(netdev);
786
787	netdev->netdev_ops = &catc_netdev_ops;
788	netdev->watchdog_timeo = TX_TIMEOUT;
789	netdev->ethtool_ops = &ops;
790
791	catc->usbdev = usbdev;
792	catc->netdev = netdev;
793
794	spin_lock_init(&catc->tx_lock);
795	spin_lock_init(&catc->ctrl_lock);
796
797	timer_setup(&catc->timer, catc_stats_timer, 0);
798
799	catc->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
800	catc->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
801	catc->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
802	catc->irq_urb = usb_alloc_urb(0, GFP_KERNEL);
803	if ((!catc->ctrl_urb) || (!catc->tx_urb) || 
804	    (!catc->rx_urb) || (!catc->irq_urb)) {
805		dev_err(&intf->dev, "No free urbs available.\n");
806		ret = -ENOMEM;
807		goto fail_free;
808	}
809
810	/* The F5U011 has the same vendor/product as the netmate but a device version of 0x130 */
811	if (le16_to_cpu(usbdev->descriptor.idVendor) == 0x0423 && 
812	    le16_to_cpu(usbdev->descriptor.idProduct) == 0xa &&
813	    le16_to_cpu(catc->usbdev->descriptor.bcdDevice) == 0x0130) {
814		dev_dbg(dev, "Testing for f5u011\n");
815		catc->is_f5u011 = 1;		
816		atomic_set(&catc->recq_sz, 0);
817		pktsz = RX_PKT_SZ;
818	} else {
819		pktsz = RX_MAX_BURST * (PKT_SZ + 2);
820	}
821	
822	usb_fill_control_urb(catc->ctrl_urb, usbdev, usb_sndctrlpipe(usbdev, 0),
823		NULL, NULL, 0, catc_ctrl_done, catc);
824
825	usb_fill_bulk_urb(catc->tx_urb, usbdev, usb_sndbulkpipe(usbdev, 1),
826		NULL, 0, catc_tx_done, catc);
827
828	usb_fill_bulk_urb(catc->rx_urb, usbdev, usb_rcvbulkpipe(usbdev, 1),
829		catc->rx_buf, pktsz, catc_rx_done, catc);
830
831	usb_fill_int_urb(catc->irq_urb, usbdev, usb_rcvintpipe(usbdev, 2),
832                catc->irq_buf, 2, catc_irq_done, catc, 1);
833
834	if (!catc->is_f5u011) {
835		u32 *buf;
836		int i;
837
838		dev_dbg(dev, "Checking memory size\n");
839
840		buf = kmalloc(4, GFP_KERNEL);
841		if (!buf) {
842			ret = -ENOMEM;
843			goto fail_free;
844		}
845
846		*buf = 0x12345678;
847		catc_write_mem(catc, 0x7a80, buf, 4);
848		*buf = 0x87654321;
849		catc_write_mem(catc, 0xfa80, buf, 4);
850		catc_read_mem(catc, 0x7a80, buf, 4);
851	  
852		switch (*buf) {
853		case 0x12345678:
854			catc_set_reg(catc, TxBufCount, 8);
855			catc_set_reg(catc, RxBufCount, 32);
856			dev_dbg(dev, "64k Memory\n");
857			break;
858		default:
859			dev_warn(&intf->dev,
860				 "Couldn't detect memory size, assuming 32k\n");
861			/* fall through */
862		case 0x87654321:
863			catc_set_reg(catc, TxBufCount, 4);
864			catc_set_reg(catc, RxBufCount, 16);
865			dev_dbg(dev, "32k Memory\n");
866			break;
867		}
868
869		kfree(buf);
870	  
871		dev_dbg(dev, "Getting MAC from SEEROM.\n");
872	  
873		catc_get_mac(catc, netdev->dev_addr);
874		
875		dev_dbg(dev, "Setting MAC into registers.\n");
876	  
877		for (i = 0; i < 6; i++)
878			catc_set_reg(catc, StationAddr0 - i, netdev->dev_addr[i]);
879		
880		dev_dbg(dev, "Filling the multicast list.\n");
881	  
882		eth_broadcast_addr(broadcast);
883		catc_multicast(broadcast, catc->multicast);
884		catc_multicast(netdev->dev_addr, catc->multicast);
885		catc_write_mem(catc, 0xfa80, catc->multicast, 64);
886		
887		dev_dbg(dev, "Clearing error counters.\n");
888		
889		for (i = 0; i < 8; i++)
890			catc_set_reg(catc, EthStats + i, 0);
891		catc->last_stats = jiffies;
892		
893		dev_dbg(dev, "Enabling.\n");
894		
895		catc_set_reg(catc, MaxBurst, RX_MAX_BURST);
896		catc_set_reg(catc, OpModes, OpTxMerge | OpRxMerge | OpLenInclude | Op3MemWaits);
897		catc_set_reg(catc, LEDCtrl, LEDLink);
898		catc_set_reg(catc, RxUnit, RxEnable | RxPolarity | RxMultiCast);
899	} else {
900		dev_dbg(dev, "Performing reset\n");
901		catc_reset(catc);
902		catc_get_mac(catc, netdev->dev_addr);
903		
904		dev_dbg(dev, "Setting RX Mode\n");
905		catc->rxmode[0] = RxEnable | RxPolarity | RxMultiCast;
906		catc->rxmode[1] = 0;
907		f5u011_rxmode(catc, catc->rxmode);
908	}
909	dev_dbg(dev, "Init done.\n");
910	printk(KERN_INFO "%s: %s USB Ethernet at usb-%s-%s, %pM.\n",
911	       netdev->name, (catc->is_f5u011) ? "Belkin F5U011" : "CATC EL1210A NetMate",
912	       usbdev->bus->bus_name, usbdev->devpath, netdev->dev_addr);
913	usb_set_intfdata(intf, catc);
914
915	SET_NETDEV_DEV(netdev, &intf->dev);
916	ret = register_netdev(netdev);
917	if (ret)
918		goto fail_clear_intfdata;
919
920	return 0;
921
922fail_clear_intfdata:
923	usb_set_intfdata(intf, NULL);
924fail_free:
925	usb_free_urb(catc->ctrl_urb);
926	usb_free_urb(catc->tx_urb);
927	usb_free_urb(catc->rx_urb);
928	usb_free_urb(catc->irq_urb);
929	free_netdev(netdev);
930	return ret;
931}
932
933static void catc_disconnect(struct usb_interface *intf)
934{
935	struct catc *catc = usb_get_intfdata(intf);
936
937	usb_set_intfdata(intf, NULL);
938	if (catc) {
939		unregister_netdev(catc->netdev);
940		usb_free_urb(catc->ctrl_urb);
941		usb_free_urb(catc->tx_urb);
942		usb_free_urb(catc->rx_urb);
943		usb_free_urb(catc->irq_urb);
944		free_netdev(catc->netdev);
945	}
946}
947
948/*
949 * Module functions and tables.
950 */
951
952static const struct usb_device_id catc_id_table[] = {
953	{ USB_DEVICE(0x0423, 0xa) },	/* CATC Netmate, Belkin F5U011 */
954	{ USB_DEVICE(0x0423, 0xc) },	/* CATC Netmate II, Belkin F5U111 */
955	{ USB_DEVICE(0x08d1, 0x1) },	/* smartBridges smartNIC */
956	{ }
957};
958
959MODULE_DEVICE_TABLE(usb, catc_id_table);
960
961static struct usb_driver catc_driver = {
962	.name =		driver_name,
963	.probe =	catc_probe,
964	.disconnect =	catc_disconnect,
965	.id_table =	catc_id_table,
966	.disable_hub_initiated_lpm = 1,
967};
968
969module_usb_driver(catc_driver);