projects / linux-block.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
[linux-block.git] / drivers / net / usb / catc.c
CommitLineData
1da177e4
LT		 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
9cb00073 27 * along with this program; if not, see <http://www.gnu.org/licenses/>.
1da177e4
LT		 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
1da177e4
LT		 34#include <linux/module.h>
35#include <linux/kernel.h>
36#include <linux/string.h>
1da177e4
LT		 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>
5a0e3ad6 44#include <linux/gfp.h>
7c0f6ba6 45#include <linux/uaccess.h>
1da177e4
LT		 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
1da177e4
LT		 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
7d12e780 223static void catc_rx_done(struct urb *urb)
1da177e4
LT		 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;
c94cb314 229 int status = urb->status;
1da177e4
LT		 230
231 if (!catc->is_f5u011) {
232 clear_bit(RX_RUNNING, &catc->flags);
233 pkt_offset = 2;
234 }
235
c94cb314 236 if (status) {
49ae25b0
GKH		 237 dev_dbg(&urb->dev->dev, "rx_done, status %d, length %d\n",
238 status, urb->actual_length);
1da177e4
LT		 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) {
edc4ae08
SH		 246 catc->netdev->stats.rx_length_errors++;
247 catc->netdev->stats.rx_errors++;
1da177e4
LT		 248 break;
249 }
250 } else {
251 pkt_len = urb->actual_length;
252 }
253
254 if (!(skb = dev_alloc_skb(pkt_len)))
255 return;
256
8c7b7faa 257 skb_copy_to_linear_data(skb, pkt_start + pkt_offset, pkt_len);
1da177e4
LT		 258 skb_put(skb, pkt_len);
259
260 skb->protocol = eth_type_trans(skb, catc->netdev);
261 netif_rx(skb);
262
edc4ae08
SH		 263 catc->netdev->stats.rx_packets++;
264 catc->netdev->stats.rx_bytes += pkt_len;
1da177e4
LT		 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
1da177e4
LT		 273 if (catc->is_f5u011) {
274 if (atomic_read(&catc->recq_sz)) {
c94cb314 275 int state;
1da177e4 276 atomic_dec(&catc->recq_sz);
49ae25b0 277 netdev_dbg(catc->netdev, "getting extra packet\n");
1da177e4 278 urb->dev = catc->usbdev;
c94cb314 279 if ((state = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
49ae25b0
GKH		 280 netdev_dbg(catc->netdev,
281 "submit(rx_urb) status %d\n", state);
1da177e4
LT		 282 }
283 } else {
284 clear_bit(RX_RUNNING, &catc->flags);
285 }
286 }
287}
288
7d12e780 289static void catc_irq_done(struct urb *urb)
1da177e4
LT		 290{
291 struct catc *catc = urb->context;
292 u8 *data = urb->transfer_buffer;
c94cb314 293 int status = urb->status;
1da177e4 294 unsigned int hasdata = 0, linksts = LinkNoChange;
c94cb314 295 int res;
1da177e4
LT		 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
c94cb314 311 switch (status) {
1da177e4
LT		 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 */
49ae25b0
GKH		 320 dev_dbg(&urb->dev->dev,
321 "irq_done, status %d, data %02x %02x.\n",
322 status, data[0], data[1]);
1da177e4
LT		 323 goto resubmit;
324 }
325
326 if (linksts == LinkGood) {
327 netif_carrier_on(catc->netdev);
49ae25b0 328 netdev_dbg(catc->netdev, "link ok\n");
1da177e4
LT		 329 }
330
331 if (linksts == LinkBad) {
332 netif_carrier_off(catc->netdev);
49ae25b0 333 netdev_dbg(catc->netdev, "link bad\n");
1da177e4
LT		 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;
c94cb314 342 if ((res = usb_submit_urb(catc->rx_urb, GFP_ATOMIC)) < 0) {
50c627c9
GKH		 343 dev_err(&catc->usbdev->dev,
344 "submit(rx_urb) status %d\n", res);
1da177e4
LT		 345 }
346 }
347 }
348resubmit:
c94cb314
ON		 349 res = usb_submit_urb (urb, GFP_ATOMIC);
350 if (res)
50c627c9
GKH		 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);
1da177e4
LT		 355}
356
357/*
358 * Transmit routines.
359 */
360
5a9f4e33 361static int catc_tx_run(struct catc *catc)
1da177e4
LT		 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)
50c627c9
GKH		 373 dev_err(&catc->usbdev->dev, "submit(tx_urb), status %d\n",
374 status);
1da177e4
LT		 375
376 catc->tx_idx = !catc->tx_idx;
377 catc->tx_ptr = 0;
378
860e9538 379 netif_trans_update(catc->netdev);
5a9f4e33 380 return status;
1da177e4
LT		 381}
382
7d12e780 383static void catc_tx_done(struct urb *urb)
1da177e4
LT		 384{
385 struct catc *catc = urb->context;
386 unsigned long flags;
c94cb314 387 int r, status = urb->status;
1da177e4 388
c94cb314 389 if (status == -ECONNRESET) {
49ae25b0 390 dev_dbg(&urb->dev->dev, "Tx Reset.\n");
1da177e4 391 urb->status = 0;
860e9538 392 netif_trans_update(catc->netdev);
edc4ae08 393 catc->netdev->stats.tx_errors++;
1da177e4
LT		 394 clear_bit(TX_RUNNING, &catc->flags);
395 netif_wake_queue(catc->netdev);
396 return;
397 }
398
c94cb314 399 if (status) {
49ae25b0
GKH		 400 dev_dbg(&urb->dev->dev, "tx_done, status %d, length %d\n",
401 status, urb->actual_length);
1da177e4
LT		 402 return;
403 }
404
405 spin_lock_irqsave(&catc->tx_lock, flags);
406
5a9f4e33
ON		 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 {
1da177e4 412 clear_bit(TX_RUNNING, &catc->flags);
5a9f4e33 413 }
1da177e4
LT		 414
415 netif_wake_queue(catc->netdev);
416
417 spin_unlock_irqrestore(&catc->tx_lock, flags);
418}
419
25a79c41
SH		 420static netdev_tx_t catc_start_xmit(struct sk_buff *skb,
421 struct net_device *netdev)
1da177e4
LT		 422{
423 struct catc *catc = netdev_priv(netdev);
424 unsigned long flags;
5a9f4e33 425 int r = 0;
1da177e4
LT		 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;
4ec7ffa2
AV		 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);
d626f62b 436 skb_copy_from_linear_data(skb, tx_buf + 2, skb->len);
1da177e4
LT		 437 catc->tx_ptr += skb->len + 2;
438
5a9f4e33
ON		 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 }
1da177e4 444
8e95a202
JP		 445 if ((catc->is_f5u011 && catc->tx_ptr) ||
446 (catc->tx_ptr >= ((TX_MAX_BURST - 1) * (PKT_SZ + 2))))
1da177e4
LT		 447 netif_stop_queue(netdev);
448
449 spin_unlock_irqrestore(&catc->tx_lock, flags);
450
5a9f4e33 451 if (r >= 0) {
edc4ae08
SH		 452 catc->netdev->stats.tx_bytes += skb->len;
453 catc->netdev->stats.tx_packets++;
5a9f4e33 454 }
1da177e4
LT		 455
456 dev_kfree_skb(skb);
457
6ed10654 458 return NETDEV_TX_OK;
1da177e4
LT		 459}
460
461static void catc_tx_timeout(struct net_device *netdev)
462{
463 struct catc *catc = netdev_priv(netdev);
464
4dc89948 465 dev_warn(&netdev->dev, "Transmit timed out.\n");
1da177e4
LT		 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
930a6eac 504 if ((status = usb_submit_urb(catc->ctrl_urb, GFP_ATOMIC)))
50c627c9
GKH		 505 dev_err(&catc->usbdev->dev, "submit(ctrl_urb) status %d\n",
506 status);
1da177e4
LT		 507}
508
7d12e780 509static void catc_ctrl_done(struct urb *urb)
1da177e4
LT		 510{
511 struct catc *catc = urb->context;
512 struct ctrl_queue *q;
513 unsigned long flags;
c94cb314 514 int status = urb->status;
1da177e4 515
c94cb314 516 if (status)
49ae25b0
GKH		 517 dev_dbg(&urb->dev->dev, "ctrl_done, status %d, len %d.\n",
518 status, urb->actual_length);
1da177e4
LT		 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) {
50c627c9 566 dev_err(&catc->usbdev->dev, "ctrl queue full\n");
1da177e4
LT		 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:
edc4ae08 599 catc->netdev->stats.collisions += data - last;
1da177e4
LT		 600 break;
601 case TxExcessColl:
edc4ae08
SH		 602 catc->netdev->stats.tx_aborted_errors += data - last;
603 catc->netdev->stats.tx_errors += data - last;
1da177e4
LT		 604 break;
605 case RxFramErr:
edc4ae08
SH		 606 catc->netdev->stats.rx_frame_errors += data - last;
607 catc->netdev->stats.rx_errors += data - last;
1da177e4
LT		 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
1da177e4
LT		 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);
22bedad3 640 struct netdev_hw_addr *ha;
d458cdf7 641 u8 broadcast[ETH_ALEN];
1da177e4 642 u8 rx = RxEnable | RxPolarity | RxMultiCast;
1da177e4 643
519983b1 644 eth_broadcast_addr(broadcast);
1da177e4
LT		 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 {
22bedad3
JP		 658 netdev_for_each_mc_addr(ha, netdev) {
659 u32 crc = ether_crc_le(6, ha->addr);
1da177e4
LT		 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;
49ae25b0
GKH		 674 netdev_dbg(catc->netdev,
675 "Setting RX mode to %2.2X %2.2X\n",
676 catc->rxmode[0], catc->rxmode[1]);
1da177e4
LT		 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);
7826d43f
JP		 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));
1da177e4
LT		 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;
70739497 699 ethtool_cmd_speed_set(cmd, SPEED_10);
1da177e4
LT		 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
0fc0b732 710static const struct ethtool_ops ops = {
1da177e4
LT		 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) {
50c627c9
GKH		 727 dev_err(&catc->usbdev->dev, "submit(irq_urb) status %d\n",
728 status);
1da177e4
LT		 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
19b8f8f1
SH		 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,
afc4b13d 763 .ndo_set_rx_mode = catc_set_multicast_list,
19b8f8f1
SH		 764 .ndo_set_mac_address = eth_mac_addr,
765 .ndo_validate_addr = eth_validate_addr,
766};
767
1da177e4
LT		 768/*
769 * USB probe, disconnect.
770 */
771
772static int catc_probe(struct usb_interface *intf, const struct usb_device_id *id)
773{
49ae25b0 774 struct device *dev = &intf->dev;
1da177e4
LT		 775 struct usb_device *usbdev = interface_to_usbdev(intf);
776 struct net_device *netdev;
777 struct catc *catc;
d458cdf7 778 u8 broadcast[ETH_ALEN];
1da177e4
LT		 779 int i, pktsz;
780
781 if (usb_set_interface(usbdev,
782 intf->altsetting->desc.bInterfaceNumber, 1)) {
49ae25b0 783 dev_err(dev, "Can't set altsetting 1.\n");
1da177e4
LT		 784 return -EIO;
785 }
786
787 netdev = alloc_etherdev(sizeof(struct catc));
788 if (!netdev)
789 return -ENOMEM;
790
791 catc = netdev_priv(netdev);
792
19b8f8f1 793 netdev->netdev_ops = &catc_netdev_ops;
1da177e4 794 netdev->watchdog_timeo = TX_TIMEOUT;
7ad24ea4 795 netdev->ethtool_ops = &ops;
1da177e4
LT		 796
797 catc->usbdev = usbdev;
798 catc->netdev = netdev;
799
800 spin_lock_init(&catc->tx_lock);
801 spin_lock_init(&catc->ctrl_lock);
802
803 init_timer(&catc->timer);
804 catc->timer.data = (long) catc;
805 catc->timer.function = catc_stats_timer;
806
807 catc->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
808 catc->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
809 catc->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
810 catc->irq_urb = usb_alloc_urb(0, GFP_KERNEL);
811 if ((!catc->ctrl_urb) || (!catc->tx_urb) ||
812 (!catc->rx_urb) || (!catc->irq_urb)) {
50c627c9 813 dev_err(&intf->dev, "No free urbs available.\n");
c69694b7
MK		 814 usb_free_urb(catc->ctrl_urb);
815 usb_free_urb(catc->tx_urb);
816 usb_free_urb(catc->rx_urb);
817 usb_free_urb(catc->irq_urb);
1da177e4
LT		 818 free_netdev(netdev);
819 return -ENOMEM;
820 }
821
822 /* The F5U011 has the same vendor/product as the netmate but a device version of 0x130 */
823 if (le16_to_cpu(usbdev->descriptor.idVendor) == 0x0423 &&
824 le16_to_cpu(usbdev->descriptor.idProduct) == 0xa &&
825 le16_to_cpu(catc->usbdev->descriptor.bcdDevice) == 0x0130) {
49ae25b0 826 dev_dbg(dev, "Testing for f5u011\n");
1da177e4
LT		 827 catc->is_f5u011 = 1;
828 atomic_set(&catc->recq_sz, 0);
829 pktsz = RX_PKT_SZ;
830 } else {
831 pktsz = RX_MAX_BURST * (PKT_SZ + 2);
832 }
833
834 usb_fill_control_urb(catc->ctrl_urb, usbdev, usb_sndctrlpipe(usbdev, 0),
835 NULL, NULL, 0, catc_ctrl_done, catc);
836
837 usb_fill_bulk_urb(catc->tx_urb, usbdev, usb_sndbulkpipe(usbdev, 1),
838 NULL, 0, catc_tx_done, catc);
839
840 usb_fill_bulk_urb(catc->rx_urb, usbdev, usb_rcvbulkpipe(usbdev, 1),
841 catc->rx_buf, pktsz, catc_rx_done, catc);
842
843 usb_fill_int_urb(catc->irq_urb, usbdev, usb_rcvintpipe(usbdev, 2),
844 catc->irq_buf, 2, catc_irq_done, catc, 1);
845
846 if (!catc->is_f5u011) {
49ae25b0 847 dev_dbg(dev, "Checking memory size\n");
1da177e4
LT		 848
849 i = 0x12345678;
850 catc_write_mem(catc, 0x7a80, &i, 4);
851 i = 0x87654321;
852 catc_write_mem(catc, 0xfa80, &i, 4);
853 catc_read_mem(catc, 0x7a80, &i, 4);
854
855 switch (i) {
856 case 0x12345678:
857 catc_set_reg(catc, TxBufCount, 8);
858 catc_set_reg(catc, RxBufCount, 32);
49ae25b0 859 dev_dbg(dev, "64k Memory\n");
1da177e4
LT		 860 break;
861 default:
4dc89948
GKH		 862 dev_warn(&intf->dev,
863 "Couldn't detect memory size, assuming 32k\n");
1da177e4
LT		 864 case 0x87654321:
865 catc_set_reg(catc, TxBufCount, 4);
866 catc_set_reg(catc, RxBufCount, 16);
49ae25b0 867 dev_dbg(dev, "32k Memory\n");
1da177e4
LT		 868 break;
869 }
870
49ae25b0 871 dev_dbg(dev, "Getting MAC from SEEROM.\n");
1da177e4
LT		 872
873 catc_get_mac(catc, netdev->dev_addr);
874
49ae25b0 875 dev_dbg(dev, "Setting MAC into registers.\n");
1da177e4
LT		 876
877 for (i = 0; i < 6; i++)
878 catc_set_reg(catc, StationAddr0 - i, netdev->dev_addr[i]);
879
49ae25b0 880 dev_dbg(dev, "Filling the multicast list.\n");
1da177e4 881
519983b1 882 eth_broadcast_addr(broadcast);
1da177e4
LT		 883 catc_multicast(broadcast, catc->multicast);
884 catc_multicast(netdev->dev_addr, catc->multicast);
885 catc_write_mem(catc, 0xfa80, catc->multicast, 64);
886
49ae25b0 887 dev_dbg(dev, "Clearing error counters.\n");
1da177e4
LT		 888
889 for (i = 0; i < 8; i++)
890 catc_set_reg(catc, EthStats + i, 0);
891 catc->last_stats = jiffies;
892
49ae25b0 893 dev_dbg(dev, "Enabling.\n");
1da177e4
LT		 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 {
49ae25b0 900 dev_dbg(dev, "Performing reset\n");
1da177e4
LT		 901 catc_reset(catc);
902 catc_get_mac(catc, netdev->dev_addr);
903
49ae25b0 904 dev_dbg(dev, "Setting RX Mode\n");
1da177e4
LT		 905 catc->rxmode[0] = RxEnable | RxPolarity | RxMultiCast;
906 catc->rxmode[1] = 0;
907 f5u011_rxmode(catc, catc->rxmode);
908 }
49ae25b0 909 dev_dbg(dev, "Init done.\n");
3b8dff36 910 printk(KERN_INFO "%s: %s USB Ethernet at usb-%s-%s, %pM.\n",
1da177e4 911 netdev->name, (catc->is_f5u011) ? "Belkin F5U011" : "CATC EL1210A NetMate",
3b8dff36 912 usbdev->bus->bus_name, usbdev->devpath, netdev->dev_addr);
1da177e4
LT		 913 usb_set_intfdata(intf, catc);
914
915 SET_NETDEV_DEV(netdev, &intf->dev);
916 if (register_netdev(netdev) != 0) {
917 usb_set_intfdata(intf, NULL);
918 usb_free_urb(catc->ctrl_urb);
919 usb_free_urb(catc->tx_urb);
920 usb_free_urb(catc->rx_urb);
921 usb_free_urb(catc->irq_urb);
922 free_netdev(netdev);
923 return -EIO;
924 }
925 return 0;
926}
927
928static void catc_disconnect(struct usb_interface *intf)
929{
930 struct catc *catc = usb_get_intfdata(intf);
931
932 usb_set_intfdata(intf, NULL);
933 if (catc) {
934 unregister_netdev(catc->netdev);
935 usb_free_urb(catc->ctrl_urb);
936 usb_free_urb(catc->tx_urb);
937 usb_free_urb(catc->rx_urb);
938 usb_free_urb(catc->irq_urb);
939 free_netdev(catc->netdev);
940 }
941}
942
943/*
944 * Module functions and tables.
945 */
946
947static struct usb_device_id catc_id_table [] = {
948 { USB_DEVICE(0x0423, 0xa) }, /* CATC Netmate, Belkin F5U011 */
949 { USB_DEVICE(0x0423, 0xc) }, /* CATC Netmate II, Belkin F5U111 */
950 { USB_DEVICE(0x08d1, 0x1) }, /* smartBridges smartNIC */
951 { }
952};
953
954MODULE_DEVICE_TABLE(usb, catc_id_table);
955
956static struct usb_driver catc_driver = {
1da177e4
LT		 957 .name = driver_name,
958 .probe = catc_probe,
959 .disconnect = catc_disconnect,
960 .id_table = catc_id_table,
e1f12eb6 961 .disable_hub_initiated_lpm = 1,
1da177e4
LT		 962};
963
d632eb1b 964module_usb_driver(catc_driver);
Linux 6.x block layer and io_uring tree(s)