1/*
  2 *  Copyright (c) 2001 Vojtech Pavlik
  3 *
  4 *  CATC EL1210A NetMate USB Ethernet driver
  5 *
  6 *  Sponsored by SuSE
  7 *
  8 *  Based on the work of
  9 *		Donald Becker
 10 * 
 11 *  Old chipset support added by Simon Evans <spse@secret.org.uk> 2002
 12 *    - adds support for Belkin F5U011
 13 */
 14
 15/*
 16 * This program is free software; you can redistribute it and/or modify
 17 * it under the terms of the GNU General Public License as published by
 18 * the Free Software Foundation; either version 2 of the License, or 
 19 * (at your option) any later version.
 20 * 
 21 * This program is distributed in the hope that it will be useful,
 22 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 23 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 24 * GNU General Public License for more details.
 25 * 
 26 * You should have received a copy of the GNU General Public License
 27 * along with this program; if not, see <http://www.gnu.org/licenses/>.
 28 * 
 29 * Should you need to contact me, the author, you can do so either by
 30 * e-mail - mail your message to <vojtech@suse.cz>, or by paper mail:
 31 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
 32 */
 33
 34#include <linux/module.h>
 35#include <linux/kernel.h>
 36#include <linux/string.h>
 37#include <linux/netdevice.h>
 38#include <linux/etherdevice.h>
 39#include <linux/skbuff.h>
 40#include <linux/spinlock.h>
 41#include <linux/ethtool.h>
 42#include <linux/crc32.h>
 43#include <linux/bitops.h>
 44#include <linux/gfp.h>
 45#include <asm/uaccess.h>
 46
 47#undef DEBUG
 48
 49#include <linux/usb.h>
 50
 51/*
 52 * Version information.
 53 */
 54
 55#define DRIVER_VERSION "v2.8"
 56#define DRIVER_AUTHOR "Vojtech Pavlik <vojtech@suse.cz>"
 57#define DRIVER_DESC "CATC EL1210A NetMate USB Ethernet driver"
 58#define SHORT_DRIVER_DESC "EL1210A NetMate USB Ethernet"
 59
 60MODULE_AUTHOR(DRIVER_AUTHOR);
 61MODULE_DESCRIPTION(DRIVER_DESC);
 62MODULE_LICENSE("GPL");
 63
 64static const char driver_name[] = "catc";
 65
 66/*
 67 * Some defines.
 68 */ 
 69
 70#define STATS_UPDATE		(HZ)	/* Time between stats updates */
 71#define TX_TIMEOUT		(5*HZ)	/* Max time the queue can be stopped */
 72#define PKT_SZ			1536	/* Max Ethernet packet size */
 73#define RX_MAX_BURST		15	/* Max packets per rx buffer (> 0, < 16) */
 74#define TX_MAX_BURST		15	/* Max full sized packets per tx buffer (> 0) */
 75#define CTRL_QUEUE		16	/* Max control requests in flight (power of two) */
 76#define RX_PKT_SZ		1600	/* Max size of receive packet for F5U011 */
 77
 78/*
 79 * Control requests.
 80 */
 81
 82enum control_requests {
 83	ReadMem =	0xf1,
 84	GetMac =	0xf2,
 85	Reset =		0xf4,
 86	SetMac =	0xf5,
 87	SetRxMode =     0xf5,  /* F5U011 only */
 88	WriteROM =	0xf8,
 89	SetReg =	0xfa,
 90	GetReg =	0xfb,
 91	WriteMem =	0xfc,
 92	ReadROM =	0xfd,
 93};
 94
 95/*
 96 * Registers.
 97 */
 98
 99enum register_offsets {
100	TxBufCount =	0x20,
101	RxBufCount =	0x21,
102	OpModes =	0x22,
103	TxQed =		0x23,
104	RxQed =		0x24,
105	MaxBurst =	0x25,
106	RxUnit =	0x60,
107	EthStatus =	0x61,
108	StationAddr0 =	0x67,
109	EthStats =	0x69,
110	LEDCtrl =	0x81,
111};
112
113enum eth_stats {
114	TxSingleColl =	0x00,
115        TxMultiColl =	0x02,
116        TxExcessColl =	0x04,
117        RxFramErr =	0x06,
118};
119
120enum op_mode_bits {
121	Op3MemWaits =	0x03,
122	OpLenInclude =	0x08,
123	OpRxMerge =	0x10,
124	OpTxMerge =	0x20,
125	OpWin95bugfix =	0x40,
126	OpLoopback =	0x80,
127};
128
129enum rx_filter_bits {
130	RxEnable =	0x01,
131	RxPolarity =	0x02,
132	RxForceOK =	0x04,
133	RxMultiCast =	0x08,
134	RxPromisc =	0x10,
135	AltRxPromisc =  0x20, /* F5U011 uses different bit */
136};
137
138enum led_values {
139	LEDFast = 	0x01,
140	LEDSlow =	0x02,
141	LEDFlash =	0x03,
142	LEDPulse =	0x04,
143	LEDLink =	0x08,
144};
145
146enum link_status {
147	LinkNoChange = 0,
148	LinkGood     = 1,
149	LinkBad      = 2
150};
151
152/*
153 * The catc struct.
154 */
155
156#define CTRL_RUNNING	0
157#define RX_RUNNING	1
158#define TX_RUNNING	2
159
160struct catc {
161	struct net_device *netdev;
162	struct usb_device *usbdev;
163
164	unsigned long flags;
165
166	unsigned int tx_ptr, tx_idx;
167	unsigned int ctrl_head, ctrl_tail;
168	spinlock_t tx_lock, ctrl_lock;
169
170	u8 tx_buf[2][TX_MAX_BURST * (PKT_SZ + 2)];
171	u8 rx_buf[RX_MAX_BURST * (PKT_SZ + 2)];
172	u8 irq_buf[2];
173	u8 ctrl_buf[64];
174	struct usb_ctrlrequest ctrl_dr;
175
176	struct timer_list timer;
177	u8 stats_buf[8];
178	u16 stats_vals[4];
179	unsigned long last_stats;
180
181	u8 multicast[64];
182
183	struct ctrl_queue {
184		u8 dir;
185		u8 request;
186		u16 value;
187		u16 index;
188		void *buf;
189		int len;
190		void (*callback)(struct catc *catc, struct ctrl_queue *q);
191	} ctrl_queue[CTRL_QUEUE];
192
193	struct urb *tx_urb, *rx_urb, *irq_urb, *ctrl_urb;
194
195	u8 is_f5u011;	/* Set if device is an F5U011 */
196	u8 rxmode[2];	/* Used for F5U011 */
197	atomic_t recq_sz; /* Used for F5U011 - counter of waiting rx packets */
198};
199
200/*
201 * Useful macros.
202 */
203
204#define catc_get_mac(catc, mac)				catc_ctrl_msg(catc, USB_DIR_IN,  GetMac, 0, 0, mac,  6)
205#define catc_reset(catc)				catc_ctrl_msg(catc, USB_DIR_OUT, Reset, 0, 0, NULL, 0)
206#define catc_set_reg(catc, reg, val)			catc_ctrl_msg(catc, USB_DIR_OUT, SetReg, val, reg, NULL, 0)
207#define catc_get_reg(catc, reg, buf)			catc_ctrl_msg(catc, USB_DIR_IN,  GetReg, 0, reg, buf, 1)
208#define catc_write_mem(catc, addr, buf, size)		catc_ctrl_msg(catc, USB_DIR_OUT, WriteMem, 0, addr, buf, size)
209#define catc_read_mem(catc, addr, buf, size)		catc_ctrl_msg(catc, USB_DIR_IN,  ReadMem, 0, addr, buf, size)
210
211#define f5u011_rxmode(catc, rxmode)			catc_ctrl_msg(catc, USB_DIR_OUT, SetRxMode, 0, 1, rxmode, 2)
212#define f5u011_rxmode_async(catc, rxmode)		catc_ctrl_async(catc, USB_DIR_OUT, SetRxMode, 0, 1, &rxmode, 2, NULL)
213#define f5u011_mchash_async(catc, hash)			catc_ctrl_async(catc, USB_DIR_OUT, SetRxMode, 0, 2, &hash, 8, NULL)
214
215#define catc_set_reg_async(catc, reg, val)		catc_ctrl_async(catc, USB_DIR_OUT, SetReg, val, reg, NULL, 0, NULL)
216#define catc_get_reg_async(catc, reg, cb)		catc_ctrl_async(catc, USB_DIR_IN, GetReg, 0, reg, NULL, 1, cb)
217#define catc_write_mem_async(catc, addr, buf, size)	catc_ctrl_async(catc, USB_DIR_OUT, WriteMem, 0, addr, buf, size, NULL)
218
219/*
220 * Receive routines.
221 */
222
223static void catc_rx_done(struct urb *urb)
224{
225	struct catc *catc = urb->context;
226	u8 *pkt_start = urb->transfer_buffer;
227	struct sk_buff *skb;
228	int pkt_len, pkt_offset = 0;
229	int status = urb->status;
230
231	if (!catc->is_f5u011) {
232		clear_bit(RX_RUNNING, &catc->flags);
233		pkt_offset = 2;
234	}
235
236	if (status) {
237		dev_dbg(&urb->dev->dev, "rx_done, status %d, length %d\n",
238			status, urb->actual_length);
239		return;
240	}
241
242	do {
243		if(!catc->is_f5u011) {
244			pkt_len = le16_to_cpup((__le16*)pkt_start);
245			if (pkt_len > urb->actual_length) {
246				catc->netdev->stats.rx_length_errors++;
247				catc->netdev->stats.rx_errors++;
248				break;
249			}
250		} else {
251			pkt_len = urb->actual_length;
252		}
253
254		if (!(skb = dev_alloc_skb(pkt_len)))
255			return;
256
257		skb_copy_to_linear_data(skb, pkt_start + pkt_offset, pkt_len);
258		skb_put(skb, pkt_len);
259
260		skb->protocol = eth_type_trans(skb, catc->netdev);
261		netif_rx(skb);
262
263		catc->netdev->stats.rx_packets++;
264		catc->netdev->stats.rx_bytes += pkt_len;
265
266		/* F5U011 only does one packet per RX */
267		if (catc->is_f5u011)
268			break;
269		pkt_start += (((pkt_len + 1) >> 6) + 1) << 6;
270
271	} while (pkt_start - (u8 *) urb->transfer_buffer < urb->actual_length);
272
273	if (catc->is_f5u011) {
274		if (atomic_read(&catc->recq_sz)) {
275			int state;
276			atomic_dec(&catc->recq_sz);
277			netdev_dbg(catc->netdev, "getting extra packet\n");
278			urb->dev = catc->usbdev;
279			if ((state = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
280				netdev_dbg(catc->netdev,
281					   "submit(rx_urb) status %d\n", state);
282			}
283		} else {
284			clear_bit(RX_RUNNING, &catc->flags);
285		}
286	}
287}
288
289static void catc_irq_done(struct urb *urb)
290{
291	struct catc *catc = urb->context;
292	u8 *data = urb->transfer_buffer;
293	int status = urb->status;
294	unsigned int hasdata = 0, linksts = LinkNoChange;
295	int res;
296
297	if (!catc->is_f5u011) {
298		hasdata = data[1] & 0x80;
299		if (data[1] & 0x40)
300			linksts = LinkGood;
301		else if (data[1] & 0x20)
302			linksts = LinkBad;
303	} else {
304		hasdata = (unsigned int)(be16_to_cpup((__be16*)data) & 0x0fff);
305		if (data[0] == 0x90)
306			linksts = LinkGood;
307		else if (data[0] == 0xA0)
308			linksts = LinkBad;
309	}
310
311	switch (status) {
312	case 0:			/* success */
313		break;
314	case -ECONNRESET:	/* unlink */
315	case -ENOENT:
316	case -ESHUTDOWN:
317		return;
318	/* -EPIPE:  should clear the halt */
319	default:		/* error */
320		dev_dbg(&urb->dev->dev,
321			"irq_done, status %d, data %02x %02x.\n",
322			status, data[0], data[1]);
323		goto resubmit;
324	}
325
326	if (linksts == LinkGood) {
327		netif_carrier_on(catc->netdev);
328		netdev_dbg(catc->netdev, "link ok\n");
329	}
330
331	if (linksts == LinkBad) {
332		netif_carrier_off(catc->netdev);
333		netdev_dbg(catc->netdev, "link bad\n");
334	}
335
336	if (hasdata) {
337		if (test_and_set_bit(RX_RUNNING, &catc->flags)) {
338			if (catc->is_f5u011)
339				atomic_inc(&catc->recq_sz);
340		} else {
341			catc->rx_urb->dev = catc->usbdev;
342			if ((res = usb_submit_urb(catc->rx_urb, GFP_ATOMIC)) < 0) {
343				dev_err(&catc->usbdev->dev,
344					"submit(rx_urb) status %d\n", res);
345			}
346		} 
347	}
348resubmit:
349	res = usb_submit_urb (urb, GFP_ATOMIC);
350	if (res)
351		dev_err(&catc->usbdev->dev,
352			"can't resubmit intr, %s-%s, status %d\n",
353			catc->usbdev->bus->bus_name,
354			catc->usbdev->devpath, res);
355}
356
357/*
358 * Transmit routines.
359 */
360
361static int catc_tx_run(struct catc *catc)
362{
363	int status;
364
365	if (catc->is_f5u011)
366		catc->tx_ptr = (catc->tx_ptr + 63) & ~63;
367
368	catc->tx_urb->transfer_buffer_length = catc->tx_ptr;
369	catc->tx_urb->transfer_buffer = catc->tx_buf[catc->tx_idx];
370	catc->tx_urb->dev = catc->usbdev;
371
372	if ((status = usb_submit_urb(catc->tx_urb, GFP_ATOMIC)) < 0)
373		dev_err(&catc->usbdev->dev, "submit(tx_urb), status %d\n",
374			status);
375
376	catc->tx_idx = !catc->tx_idx;
377	catc->tx_ptr = 0;
378
379	catc->netdev->trans_start = jiffies;
380	return status;
381}
382
383static void catc_tx_done(struct urb *urb)
384{
385	struct catc *catc = urb->context;
386	unsigned long flags;
387	int r, status = urb->status;
388
389	if (status == -ECONNRESET) {
390		dev_dbg(&urb->dev->dev, "Tx Reset.\n");
391		urb->status = 0;
392		catc->netdev->trans_start = jiffies;
393		catc->netdev->stats.tx_errors++;
394		clear_bit(TX_RUNNING, &catc->flags);
395		netif_wake_queue(catc->netdev);
396		return;
397	}
398
399	if (status) {
400		dev_dbg(&urb->dev->dev, "tx_done, status %d, length %d\n",
401			status, urb->actual_length);
402		return;
403	}
404
405	spin_lock_irqsave(&catc->tx_lock, flags);
406
407	if (catc->tx_ptr) {
408		r = catc_tx_run(catc);
409		if (unlikely(r < 0))
410			clear_bit(TX_RUNNING, &catc->flags);
411	} else {
412		clear_bit(TX_RUNNING, &catc->flags);
413	}
414
415	netif_wake_queue(catc->netdev);
416
417	spin_unlock_irqrestore(&catc->tx_lock, flags);
418}
419
420static netdev_tx_t catc_start_xmit(struct sk_buff *skb,
421					 struct net_device *netdev)
422{
423	struct catc *catc = netdev_priv(netdev);
424	unsigned long flags;
425	int r = 0;
426	char *tx_buf;
427
428	spin_lock_irqsave(&catc->tx_lock, flags);
429
430	catc->tx_ptr = (((catc->tx_ptr - 1) >> 6) + 1) << 6;
431	tx_buf = catc->tx_buf[catc->tx_idx] + catc->tx_ptr;
432	if (catc->is_f5u011)
433		*(__be16 *)tx_buf = cpu_to_be16(skb->len);
434	else
435		*(__le16 *)tx_buf = cpu_to_le16(skb->len);
436	skb_copy_from_linear_data(skb, tx_buf + 2, skb->len);
437	catc->tx_ptr += skb->len + 2;
438
439	if (!test_and_set_bit(TX_RUNNING, &catc->flags)) {
440		r = catc_tx_run(catc);
441		if (r < 0)
442			clear_bit(TX_RUNNING, &catc->flags);
443	}
444
445	if ((catc->is_f5u011 && catc->tx_ptr) ||
446	    (catc->tx_ptr >= ((TX_MAX_BURST - 1) * (PKT_SZ + 2))))
447		netif_stop_queue(netdev);
448
449	spin_unlock_irqrestore(&catc->tx_lock, flags);
450
451	if (r >= 0) {
452		catc->netdev->stats.tx_bytes += skb->len;
453		catc->netdev->stats.tx_packets++;
454	}
455
456	dev_kfree_skb(skb);
457
458	return NETDEV_TX_OK;
459}
460
461static void catc_tx_timeout(struct net_device *netdev)
462{
463	struct catc *catc = netdev_priv(netdev);
464
465	dev_warn(&netdev->dev, "Transmit timed out.\n");
466	usb_unlink_urb(catc->tx_urb);
467}
468
469/*
470 * Control messages.
471 */
472
473static int catc_ctrl_msg(struct catc *catc, u8 dir, u8 request, u16 value, u16 index, void *buf, int len)
474{
475        int retval = usb_control_msg(catc->usbdev,
476		dir ? usb_rcvctrlpipe(catc->usbdev, 0) : usb_sndctrlpipe(catc->usbdev, 0),
477		 request, 0x40 | dir, value, index, buf, len, 1000);
478        return retval < 0 ? retval : 0;
479}
480
481static void catc_ctrl_run(struct catc *catc)
482{
483	struct ctrl_queue *q = catc->ctrl_queue + catc->ctrl_tail;
484	struct usb_device *usbdev = catc->usbdev;
485	struct urb *urb = catc->ctrl_urb;
486	struct usb_ctrlrequest *dr = &catc->ctrl_dr;
487	int status;
488
489	dr->bRequest = q->request;
490	dr->bRequestType = 0x40 | q->dir;
491	dr->wValue = cpu_to_le16(q->value);
492	dr->wIndex = cpu_to_le16(q->index);
493	dr->wLength = cpu_to_le16(q->len);
494
495        urb->pipe = q->dir ? usb_rcvctrlpipe(usbdev, 0) : usb_sndctrlpipe(usbdev, 0);
496	urb->transfer_buffer_length = q->len;
497	urb->transfer_buffer = catc->ctrl_buf;
498	urb->setup_packet = (void *) dr;
499	urb->dev = usbdev;
500
501	if (!q->dir && q->buf && q->len)
502		memcpy(catc->ctrl_buf, q->buf, q->len);
503
504	if ((status = usb_submit_urb(catc->ctrl_urb, GFP_ATOMIC)))
505		dev_err(&catc->usbdev->dev, "submit(ctrl_urb) status %d\n",
506			status);
507}
508
509static void catc_ctrl_done(struct urb *urb)
510{
511	struct catc *catc = urb->context;
512	struct ctrl_queue *q;
513	unsigned long flags;
514	int status = urb->status;
515
516	if (status)
517		dev_dbg(&urb->dev->dev, "ctrl_done, status %d, len %d.\n",
518			status, urb->actual_length);
519
520	spin_lock_irqsave(&catc->ctrl_lock, flags);
521
522	q = catc->ctrl_queue + catc->ctrl_tail;
523
524	if (q->dir) {
525		if (q->buf && q->len)
526			memcpy(q->buf, catc->ctrl_buf, q->len);
527		else
528			q->buf = catc->ctrl_buf;
529	}
530
531	if (q->callback)
532		q->callback(catc, q);
533
534	catc->ctrl_tail = (catc->ctrl_tail + 1) & (CTRL_QUEUE - 1);
535
536	if (catc->ctrl_head != catc->ctrl_tail)
537		catc_ctrl_run(catc);
538	else
539		clear_bit(CTRL_RUNNING, &catc->flags);
540
541	spin_unlock_irqrestore(&catc->ctrl_lock, flags);
542}
543
544static int catc_ctrl_async(struct catc *catc, u8 dir, u8 request, u16 value,
545	u16 index, void *buf, int len, void (*callback)(struct catc *catc, struct ctrl_queue *q))
546{
547	struct ctrl_queue *q;
548	int retval = 0;
549	unsigned long flags;
550
551	spin_lock_irqsave(&catc->ctrl_lock, flags);
552	
553	q = catc->ctrl_queue + catc->ctrl_head;
554
555	q->dir = dir;
556	q->request = request;
557	q->value = value;
558	q->index = index;
559	q->buf = buf;
560	q->len = len;
561	q->callback = callback;
562
563	catc->ctrl_head = (catc->ctrl_head + 1) & (CTRL_QUEUE - 1);
564
565	if (catc->ctrl_head == catc->ctrl_tail) {
566		dev_err(&catc->usbdev->dev, "ctrl queue full\n");
567		catc->ctrl_tail = (catc->ctrl_tail + 1) & (CTRL_QUEUE - 1);
568		retval = -1;
569	}
570
571	if (!test_and_set_bit(CTRL_RUNNING, &catc->flags))
572		catc_ctrl_run(catc);
573
574	spin_unlock_irqrestore(&catc->ctrl_lock, flags);
575
576	return retval;
577}
578
579/*
580 * Statistics.
581 */
582
583static void catc_stats_done(struct catc *catc, struct ctrl_queue *q)
584{
585	int index = q->index - EthStats;
586	u16 data, last;
587
588	catc->stats_buf[index] = *((char *)q->buf);
589
590	if (index & 1)
591		return;
592
593	data = ((u16)catc->stats_buf[index] << 8) | catc->stats_buf[index + 1];
594	last = catc->stats_vals[index >> 1];
595
596	switch (index) {
597		case TxSingleColl:
598		case TxMultiColl:
599			catc->netdev->stats.collisions += data - last;
600			break;
601		case TxExcessColl:
602			catc->netdev->stats.tx_aborted_errors += data - last;
603			catc->netdev->stats.tx_errors += data - last;
604			break;
605		case RxFramErr:
606			catc->netdev->stats.rx_frame_errors += data - last;
607			catc->netdev->stats.rx_errors += data - last;
608			break;
609	}
610
611	catc->stats_vals[index >> 1] = data;
612}
613
614static void catc_stats_timer(unsigned long data)
615{
616	struct catc *catc = (void *) data;
617	int i;
618
619	for (i = 0; i < 8; i++)
620		catc_get_reg_async(catc, EthStats + 7 - i, catc_stats_done);
621
622	mod_timer(&catc->timer, jiffies + STATS_UPDATE);
623}
624
625/*
626 * Receive modes. Broadcast, Multicast, Promisc.
627 */
628
629static void catc_multicast(unsigned char *addr, u8 *multicast)
630{
631	u32 crc;
632
633	crc = ether_crc_le(6, addr);
634	multicast[(crc >> 3) & 0x3f] |= 1 << (crc & 7);
635}
636
637static void catc_set_multicast_list(struct net_device *netdev)
638{
639	struct catc *catc = netdev_priv(netdev);
640	struct netdev_hw_addr *ha;
641	u8 broadcast[ETH_ALEN];
642	u8 rx = RxEnable | RxPolarity | RxMultiCast;
643
644	memset(broadcast, 0xff, ETH_ALEN);
645	memset(catc->multicast, 0, 64);
646
647	catc_multicast(broadcast, catc->multicast);
648	catc_multicast(netdev->dev_addr, catc->multicast);
649
650	if (netdev->flags & IFF_PROMISC) {
651		memset(catc->multicast, 0xff, 64);
652		rx |= (!catc->is_f5u011) ? RxPromisc : AltRxPromisc;
653	} 
654
655	if (netdev->flags & IFF_ALLMULTI) {
656		memset(catc->multicast, 0xff, 64);
657	} else {
658		netdev_for_each_mc_addr(ha, netdev) {
659			u32 crc = ether_crc_le(6, ha->addr);
660			if (!catc->is_f5u011) {
661				catc->multicast[(crc >> 3) & 0x3f] |= 1 << (crc & 7);
662			} else {
663				catc->multicast[7-(crc >> 29)] |= 1 << ((crc >> 26) & 7);
664			}
665		}
666	}
667	if (!catc->is_f5u011) {
668		catc_set_reg_async(catc, RxUnit, rx);
669		catc_write_mem_async(catc, 0xfa80, catc->multicast, 64);
670	} else {
671		f5u011_mchash_async(catc, catc->multicast);
672		if (catc->rxmode[0] != rx) {
673			catc->rxmode[0] = rx;
674			netdev_dbg(catc->netdev,
675				   "Setting RX mode to %2.2X %2.2X\n",
676				   catc->rxmode[0], catc->rxmode[1]);
677			f5u011_rxmode_async(catc, catc->rxmode);
678		}
679	}
680}
681
682static void catc_get_drvinfo(struct net_device *dev,
683			     struct ethtool_drvinfo *info)
684{
685	struct catc *catc = netdev_priv(dev);
686	strlcpy(info->driver, driver_name, sizeof(info->driver));
687	strlcpy(info->version, DRIVER_VERSION, sizeof(info->version));
688	usb_make_path(catc->usbdev, info->bus_info, sizeof(info->bus_info));
689}
690
691static int catc_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
692{
693	struct catc *catc = netdev_priv(dev);
694	if (!catc->is_f5u011)
695		return -EOPNOTSUPP;
696
697	cmd->supported = SUPPORTED_10baseT_Half | SUPPORTED_TP;
698	cmd->advertising = ADVERTISED_10baseT_Half | ADVERTISED_TP;
699	ethtool_cmd_speed_set(cmd, SPEED_10);
700	cmd->duplex = DUPLEX_HALF;
701	cmd->port = PORT_TP; 
702	cmd->phy_address = 0;
703	cmd->transceiver = XCVR_INTERNAL;
704	cmd->autoneg = AUTONEG_DISABLE;
705	cmd->maxtxpkt = 1;
706	cmd->maxrxpkt = 1;
707	return 0;
708}
709
710static const struct ethtool_ops ops = {
711	.get_drvinfo = catc_get_drvinfo,
712	.get_settings = catc_get_settings,
713	.get_link = ethtool_op_get_link
714};
715
716/*
717 * Open, close.
718 */
719
720static int catc_open(struct net_device *netdev)
721{
722	struct catc *catc = netdev_priv(netdev);
723	int status;
724
725	catc->irq_urb->dev = catc->usbdev;
726	if ((status = usb_submit_urb(catc->irq_urb, GFP_KERNEL)) < 0) {
727		dev_err(&catc->usbdev->dev, "submit(irq_urb) status %d\n",
728			status);
729		return -1;
730	}
731
732	netif_start_queue(netdev);
733
734	if (!catc->is_f5u011)
735		mod_timer(&catc->timer, jiffies + STATS_UPDATE);
736
737	return 0;
738}
739
740static int catc_stop(struct net_device *netdev)
741{
742	struct catc *catc = netdev_priv(netdev);
743
744	netif_stop_queue(netdev);
745
746	if (!catc->is_f5u011)
747		del_timer_sync(&catc->timer);
748
749	usb_kill_urb(catc->rx_urb);
750	usb_kill_urb(catc->tx_urb);
751	usb_kill_urb(catc->irq_urb);
752	usb_kill_urb(catc->ctrl_urb);
753
754	return 0;
755}
756
757static const struct net_device_ops catc_netdev_ops = {
758	.ndo_open		= catc_open,
759	.ndo_stop		= catc_stop,
760	.ndo_start_xmit		= catc_start_xmit,
761
762	.ndo_tx_timeout		= catc_tx_timeout,
763	.ndo_set_rx_mode	= catc_set_multicast_list,
764	.ndo_change_mtu		= eth_change_mtu,
765	.ndo_set_mac_address 	= eth_mac_addr,
766	.ndo_validate_addr	= eth_validate_addr,
767};
768
769/*
770 * USB probe, disconnect.
771 */
772
773static int catc_probe(struct usb_interface *intf, const struct usb_device_id *id)
774{
775	struct device *dev = &intf->dev;
776	struct usb_device *usbdev = interface_to_usbdev(intf);
777	struct net_device *netdev;
778	struct catc *catc;
779	u8 broadcast[ETH_ALEN];
780	int i, pktsz;
781
782	if (usb_set_interface(usbdev,
783			intf->altsetting->desc.bInterfaceNumber, 1)) {
784		dev_err(dev, "Can't set altsetting 1.\n");
785		return -EIO;
786	}
787
788	netdev = alloc_etherdev(sizeof(struct catc));
789	if (!netdev)
790		return -ENOMEM;
791
792	catc = netdev_priv(netdev);
793
794	netdev->netdev_ops = &catc_netdev_ops;
795	netdev->watchdog_timeo = TX_TIMEOUT;
796	SET_ETHTOOL_OPS(netdev, &ops);
797
798	catc->usbdev = usbdev;
799	catc->netdev = netdev;
800
801	spin_lock_init(&catc->tx_lock);
802	spin_lock_init(&catc->ctrl_lock);
803
804	init_timer(&catc->timer);
805	catc->timer.data = (long) catc;
806	catc->timer.function = catc_stats_timer;
807
808	catc->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
809	catc->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
810	catc->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
811	catc->irq_urb = usb_alloc_urb(0, GFP_KERNEL);
812	if ((!catc->ctrl_urb) || (!catc->tx_urb) || 
813	    (!catc->rx_urb) || (!catc->irq_urb)) {
814		dev_err(&intf->dev, "No free urbs available.\n");
815		usb_free_urb(catc->ctrl_urb);
816		usb_free_urb(catc->tx_urb);
817		usb_free_urb(catc->rx_urb);
818		usb_free_urb(catc->irq_urb);
819		free_netdev(netdev);
820		return -ENOMEM;
821	}
822
823	/* The F5U011 has the same vendor/product as the netmate but a device version of 0x130 */
824	if (le16_to_cpu(usbdev->descriptor.idVendor) == 0x0423 && 
825	    le16_to_cpu(usbdev->descriptor.idProduct) == 0xa &&
826	    le16_to_cpu(catc->usbdev->descriptor.bcdDevice) == 0x0130) {
827		dev_dbg(dev, "Testing for f5u011\n");
828		catc->is_f5u011 = 1;		
829		atomic_set(&catc->recq_sz, 0);
830		pktsz = RX_PKT_SZ;
831	} else {
832		pktsz = RX_MAX_BURST * (PKT_SZ + 2);
833	}
834	
835	usb_fill_control_urb(catc->ctrl_urb, usbdev, usb_sndctrlpipe(usbdev, 0),
836		NULL, NULL, 0, catc_ctrl_done, catc);
837
838	usb_fill_bulk_urb(catc->tx_urb, usbdev, usb_sndbulkpipe(usbdev, 1),
839		NULL, 0, catc_tx_done, catc);
840
841	usb_fill_bulk_urb(catc->rx_urb, usbdev, usb_rcvbulkpipe(usbdev, 1),
842		catc->rx_buf, pktsz, catc_rx_done, catc);
843
844	usb_fill_int_urb(catc->irq_urb, usbdev, usb_rcvintpipe(usbdev, 2),
845                catc->irq_buf, 2, catc_irq_done, catc, 1);
846
847	if (!catc->is_f5u011) {
 
 
 
848		dev_dbg(dev, "Checking memory size\n");
849
850		i = 0x12345678;
851		catc_write_mem(catc, 0x7a80, &i, 4);
852		i = 0x87654321;	
853		catc_write_mem(catc, 0xfa80, &i, 4);
854		catc_read_mem(catc, 0x7a80, &i, 4);
 
 
 
 
 
 
855	  
856		switch (i) {
857		case 0x12345678:
858			catc_set_reg(catc, TxBufCount, 8);
859			catc_set_reg(catc, RxBufCount, 32);
860			dev_dbg(dev, "64k Memory\n");
861			break;
862		default:
863			dev_warn(&intf->dev,
864				 "Couldn't detect memory size, assuming 32k\n");
865		case 0x87654321:
866			catc_set_reg(catc, TxBufCount, 4);
867			catc_set_reg(catc, RxBufCount, 16);
868			dev_dbg(dev, "32k Memory\n");
869			break;
870		}
 
 
871	  
872		dev_dbg(dev, "Getting MAC from SEEROM.\n");
873	  
874		catc_get_mac(catc, netdev->dev_addr);
875		
876		dev_dbg(dev, "Setting MAC into registers.\n");
877	  
878		for (i = 0; i < 6; i++)
879			catc_set_reg(catc, StationAddr0 - i, netdev->dev_addr[i]);
880		
881		dev_dbg(dev, "Filling the multicast list.\n");
882	  
883		memset(broadcast, 0xff, ETH_ALEN);
884		catc_multicast(broadcast, catc->multicast);
885		catc_multicast(netdev->dev_addr, catc->multicast);
886		catc_write_mem(catc, 0xfa80, catc->multicast, 64);
887		
888		dev_dbg(dev, "Clearing error counters.\n");
889		
890		for (i = 0; i < 8; i++)
891			catc_set_reg(catc, EthStats + i, 0);
892		catc->last_stats = jiffies;
893		
894		dev_dbg(dev, "Enabling.\n");
895		
896		catc_set_reg(catc, MaxBurst, RX_MAX_BURST);
897		catc_set_reg(catc, OpModes, OpTxMerge | OpRxMerge | OpLenInclude | Op3MemWaits);
898		catc_set_reg(catc, LEDCtrl, LEDLink);
899		catc_set_reg(catc, RxUnit, RxEnable | RxPolarity | RxMultiCast);
900	} else {
901		dev_dbg(dev, "Performing reset\n");
902		catc_reset(catc);
903		catc_get_mac(catc, netdev->dev_addr);
904		
905		dev_dbg(dev, "Setting RX Mode\n");
906		catc->rxmode[0] = RxEnable | RxPolarity | RxMultiCast;
907		catc->rxmode[1] = 0;
908		f5u011_rxmode(catc, catc->rxmode);
909	}
910	dev_dbg(dev, "Init done.\n");
911	printk(KERN_INFO "%s: %s USB Ethernet at usb-%s-%s, %pM.\n",
912	       netdev->name, (catc->is_f5u011) ? "Belkin F5U011" : "CATC EL1210A NetMate",
913	       usbdev->bus->bus_name, usbdev->devpath, netdev->dev_addr);
914	usb_set_intfdata(intf, catc);
915
916	SET_NETDEV_DEV(netdev, &intf->dev);
917	if (register_netdev(netdev) != 0) {
918		usb_set_intfdata(intf, NULL);
919		usb_free_urb(catc->ctrl_urb);
920		usb_free_urb(catc->tx_urb);
921		usb_free_urb(catc->rx_urb);
922		usb_free_urb(catc->irq_urb);
923		free_netdev(netdev);
924		return -EIO;
925	}
926	return 0;
 
 
 
 
 
 
 
 
 
 
927}
928
929static void catc_disconnect(struct usb_interface *intf)
930{
931	struct catc *catc = usb_get_intfdata(intf);
932
933	usb_set_intfdata(intf, NULL);
934	if (catc) {
935		unregister_netdev(catc->netdev);
936		usb_free_urb(catc->ctrl_urb);
937		usb_free_urb(catc->tx_urb);
938		usb_free_urb(catc->rx_urb);
939		usb_free_urb(catc->irq_urb);
940		free_netdev(catc->netdev);
941	}
942}
943
944/*
945 * Module functions and tables.
946 */
947
948static struct usb_device_id catc_id_table [] = {
949	{ USB_DEVICE(0x0423, 0xa) },	/* CATC Netmate, Belkin F5U011 */
950	{ USB_DEVICE(0x0423, 0xc) },	/* CATC Netmate II, Belkin F5U111 */
951	{ USB_DEVICE(0x08d1, 0x1) },	/* smartBridges smartNIC */
952	{ }
953};
954
955MODULE_DEVICE_TABLE(usb, catc_id_table);
956
957static struct usb_driver catc_driver = {
958	.name =		driver_name,
959	.probe =	catc_probe,
960	.disconnect =	catc_disconnect,
961	.id_table =	catc_id_table,
962	.disable_hub_initiated_lpm = 1,
963};
964
965module_usb_driver(catc_driver);