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 | |
49 | MODULE_AUTHOR(DRIVER_AUTHOR); |
50 | MODULE_DESCRIPTION(DRIVER_DESC); |
51 | MODULE_LICENSE("GPL" ); |
52 | |
53 | static 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 | |
71 | enum 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 | |
88 | enum 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 | |
102 | enum eth_stats { |
103 | TxSingleColl = 0x00, |
104 | TxMultiColl = 0x02, |
105 | TxExcessColl = 0x04, |
106 | RxFramErr = 0x06, |
107 | }; |
108 | |
109 | enum op_mode_bits { |
110 | Op3MemWaits = 0x03, |
111 | OpLenInclude = 0x08, |
112 | OpRxMerge = 0x10, |
113 | OpTxMerge = 0x20, |
114 | OpWin95bugfix = 0x40, |
115 | OpLoopback = 0x80, |
116 | }; |
117 | |
118 | enum 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 | |
127 | enum led_values { |
128 | LEDFast = 0x01, |
129 | LEDSlow = 0x02, |
130 | LEDFlash = 0x03, |
131 | LEDPulse = 0x04, |
132 | LEDLink = 0x08, |
133 | }; |
134 | |
135 | enum 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 | |
149 | struct 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 | |
212 | static 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, addr: &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(p: (__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(length: pkt_len))) |
244 | return; |
245 | |
246 | skb_copy_to_linear_data(skb, from: pkt_start + pkt_offset, len: pkt_len); |
247 | skb_put(skb, len: pkt_len); |
248 | |
249 | skb->protocol = eth_type_trans(skb, dev: 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(v: &catc->recq_sz)) { |
264 | int state; |
265 | atomic_dec(v: &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, addr: &catc->flags); |
274 | } |
275 | } |
276 | } |
277 | |
278 | static 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, 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(p: (__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(dev: catc->netdev); |
317 | netdev_dbg(catc->netdev, "link ok\n" ); |
318 | } |
319 | |
320 | if (linksts == LinkBad) { |
321 | netif_carrier_off(dev: catc->netdev); |
322 | netdev_dbg(catc->netdev, "link bad\n" ); |
323 | } |
324 | |
325 | if (hasdata) { |
326 | if (test_and_set_bit(RX_RUNNING, addr: &catc->flags)) { |
327 | if (catc->is_f5u011) |
328 | atomic_inc(v: &catc->recq_sz); |
329 | } else { |
330 | catc->rx_urb->dev = catc->usbdev; |
331 | if ((res = usb_submit_urb(urb: catc->rx_urb, GFP_ATOMIC)) < 0) { |
332 | dev_err(&catc->usbdev->dev, |
333 | "submit(rx_urb) status %d\n" , res); |
334 | } |
335 | } |
336 | } |
337 | resubmit: |
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 | |
350 | static 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(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(dev: catc->netdev); |
369 | return status; |
370 | } |
371 | |
372 | static 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(dev: catc->netdev); |
382 | catc->netdev->stats.tx_errors++; |
383 | clear_bit(TX_RUNNING, addr: &catc->flags); |
384 | netif_wake_queue(dev: 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, addr: &catc->flags); |
400 | } else { |
401 | clear_bit(TX_RUNNING, addr: &catc->flags); |
402 | } |
403 | |
404 | netif_wake_queue(dev: catc->netdev); |
405 | |
406 | spin_unlock_irqrestore(lock: &catc->tx_lock, flags); |
407 | } |
408 | |
409 | static netdev_tx_t catc_start_xmit(struct sk_buff *skb, |
410 | struct net_device *netdev) |
411 | { |
412 | struct catc *catc = netdev_priv(dev: 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, to: tx_buf + 2, len: skb->len); |
426 | catc->tx_ptr += skb->len + 2; |
427 | |
428 | if (!test_and_set_bit(TX_RUNNING, addr: &catc->flags)) { |
429 | r = catc_tx_run(catc); |
430 | if (r < 0) |
431 | clear_bit(TX_RUNNING, addr: &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(dev: netdev); |
437 | |
438 | spin_unlock_irqrestore(lock: &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 | |
450 | static void catc_tx_timeout(struct net_device *netdev, unsigned int txqueue) |
451 | { |
452 | struct catc *catc = netdev_priv(dev: netdev); |
453 | |
454 | dev_warn(&netdev->dev, "Transmit timed out.\n" ); |
455 | usb_unlink_urb(urb: catc->tx_urb); |
456 | } |
457 | |
458 | /* |
459 | * Control messages. |
460 | */ |
461 | |
462 | static 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(dev: catc->usbdev, |
465 | pipe: dir ? usb_rcvctrlpipe(catc->usbdev, 0) : usb_sndctrlpipe(catc->usbdev, 0), |
466 | request, requesttype: 0x40 | dir, value, index, data: buf, size: len, timeout: 1000); |
467 | return retval < 0 ? retval : 0; |
468 | } |
469 | |
470 | static 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(urb: catc->ctrl_urb, GFP_ATOMIC))) |
494 | dev_err(&catc->usbdev->dev, "submit(ctrl_urb) status %d\n" , |
495 | status); |
496 | } |
497 | |
498 | static 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, addr: &catc->flags); |
529 | |
530 | spin_unlock_irqrestore(lock: &catc->ctrl_lock, flags); |
531 | } |
532 | |
533 | static 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, addr: &catc->flags)) |
561 | catc_ctrl_run(catc); |
562 | |
563 | spin_unlock_irqrestore(lock: &catc->ctrl_lock, flags); |
564 | |
565 | return retval; |
566 | } |
567 | |
568 | /* |
569 | * Statistics. |
570 | */ |
571 | |
572 | static 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 | |
603 | static 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(timer: &catc->timer, expires: jiffies + STATS_UPDATE); |
612 | } |
613 | |
614 | /* |
615 | * Receive modes. Broadcast, Multicast, Promisc. |
616 | */ |
617 | |
618 | static void catc_multicast(const 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 | |
626 | static void catc_set_multicast_list(struct net_device *netdev) |
627 | { |
628 | struct catc *catc = netdev_priv(dev: netdev); |
629 | struct netdev_hw_addr *ha; |
630 | u8 broadcast[ETH_ALEN]; |
631 | u8 rx = RxEnable | RxPolarity | RxMultiCast; |
632 | |
633 | eth_broadcast_addr(addr: broadcast); |
634 | memset(catc->multicast, 0, 64); |
635 | |
636 | catc_multicast(addr: broadcast, multicast: catc->multicast); |
637 | catc_multicast(addr: netdev->dev_addr, multicast: 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 | |
671 | static void catc_get_drvinfo(struct net_device *dev, |
672 | struct ethtool_drvinfo *info) |
673 | { |
674 | struct catc *catc = netdev_priv(dev); |
675 | strscpy(p: info->driver, q: driver_name, size: sizeof(info->driver)); |
676 | strscpy(p: info->version, DRIVER_VERSION, size: sizeof(info->version)); |
677 | usb_make_path(dev: catc->usbdev, buf: info->bus_info, size: sizeof(info->bus_info)); |
678 | } |
679 | |
680 | static 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 | |
704 | static 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 | |
714 | static int catc_open(struct net_device *netdev) |
715 | { |
716 | struct catc *catc = netdev_priv(dev: netdev); |
717 | int status; |
718 | |
719 | catc->irq_urb->dev = catc->usbdev; |
720 | if ((status = usb_submit_urb(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(dev: netdev); |
727 | |
728 | if (!catc->is_f5u011) |
729 | mod_timer(timer: &catc->timer, expires: jiffies + STATS_UPDATE); |
730 | |
731 | return 0; |
732 | } |
733 | |
734 | static int catc_stop(struct net_device *netdev) |
735 | { |
736 | struct catc *catc = netdev_priv(dev: netdev); |
737 | |
738 | netif_stop_queue(dev: netdev); |
739 | |
740 | if (!catc->is_f5u011) |
741 | del_timer_sync(timer: &catc->timer); |
742 | |
743 | usb_kill_urb(urb: catc->rx_urb); |
744 | usb_kill_urb(urb: catc->tx_urb); |
745 | usb_kill_urb(urb: catc->irq_urb); |
746 | usb_kill_urb(urb: catc->ctrl_urb); |
747 | |
748 | return 0; |
749 | } |
750 | |
751 | static 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 | |
766 | static 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 | u8 *macbuf; |
774 | int pktsz, ret = -ENOMEM; |
775 | |
776 | macbuf = kmalloc(ETH_ALEN, GFP_KERNEL); |
777 | if (!macbuf) |
778 | goto error; |
779 | |
780 | if (usb_set_interface(dev: usbdev, |
781 | ifnum: intf->altsetting->desc.bInterfaceNumber, alternate: 1)) { |
782 | dev_err(dev, "Can't set altsetting 1.\n" ); |
783 | ret = -EIO; |
784 | goto fail_mem; |
785 | } |
786 | |
787 | netdev = alloc_etherdev(sizeof(struct catc)); |
788 | if (!netdev) |
789 | goto fail_mem; |
790 | |
791 | catc = netdev_priv(dev: netdev); |
792 | |
793 | netdev->netdev_ops = &catc_netdev_ops; |
794 | netdev->watchdog_timeo = TX_TIMEOUT; |
795 | netdev->ethtool_ops = &ops; |
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 | timer_setup(&catc->timer, catc_stats_timer, 0); |
804 | |
805 | catc->ctrl_urb = usb_alloc_urb(iso_packets: 0, GFP_KERNEL); |
806 | catc->tx_urb = usb_alloc_urb(iso_packets: 0, GFP_KERNEL); |
807 | catc->rx_urb = usb_alloc_urb(iso_packets: 0, GFP_KERNEL); |
808 | catc->irq_urb = usb_alloc_urb(iso_packets: 0, GFP_KERNEL); |
809 | if ((!catc->ctrl_urb) || (!catc->tx_urb) || |
810 | (!catc->rx_urb) || (!catc->irq_urb)) { |
811 | dev_err(&intf->dev, "No free urbs available.\n" ); |
812 | ret = -ENOMEM; |
813 | goto fail_free; |
814 | } |
815 | |
816 | /* The F5U011 has the same vendor/product as the netmate but a device version of 0x130 */ |
817 | if (le16_to_cpu(usbdev->descriptor.idVendor) == 0x0423 && |
818 | le16_to_cpu(usbdev->descriptor.idProduct) == 0xa && |
819 | le16_to_cpu(catc->usbdev->descriptor.bcdDevice) == 0x0130) { |
820 | dev_dbg(dev, "Testing for f5u011\n" ); |
821 | catc->is_f5u011 = 1; |
822 | atomic_set(v: &catc->recq_sz, i: 0); |
823 | pktsz = RX_PKT_SZ; |
824 | } else { |
825 | pktsz = RX_MAX_BURST * (PKT_SZ + 2); |
826 | } |
827 | |
828 | usb_fill_control_urb(urb: catc->ctrl_urb, dev: usbdev, usb_sndctrlpipe(usbdev, 0), |
829 | NULL, NULL, buffer_length: 0, complete_fn: catc_ctrl_done, context: catc); |
830 | |
831 | usb_fill_bulk_urb(urb: catc->tx_urb, dev: usbdev, usb_sndbulkpipe(usbdev, 1), |
832 | NULL, buffer_length: 0, complete_fn: catc_tx_done, context: catc); |
833 | |
834 | usb_fill_bulk_urb(urb: catc->rx_urb, dev: usbdev, usb_rcvbulkpipe(usbdev, 1), |
835 | transfer_buffer: catc->rx_buf, buffer_length: pktsz, complete_fn: catc_rx_done, context: catc); |
836 | |
837 | usb_fill_int_urb(urb: catc->irq_urb, dev: usbdev, usb_rcvintpipe(usbdev, 2), |
838 | transfer_buffer: catc->irq_buf, buffer_length: 2, complete_fn: catc_irq_done, context: catc, interval: 1); |
839 | |
840 | if (!catc->is_f5u011) { |
841 | u32 *buf; |
842 | int i; |
843 | |
844 | dev_dbg(dev, "Checking memory size\n" ); |
845 | |
846 | buf = kmalloc(size: 4, GFP_KERNEL); |
847 | if (!buf) { |
848 | ret = -ENOMEM; |
849 | goto fail_free; |
850 | } |
851 | |
852 | *buf = 0x12345678; |
853 | catc_write_mem(catc, 0x7a80, buf, 4); |
854 | *buf = 0x87654321; |
855 | catc_write_mem(catc, 0xfa80, buf, 4); |
856 | catc_read_mem(catc, 0x7a80, buf, 4); |
857 | |
858 | switch (*buf) { |
859 | case 0x12345678: |
860 | catc_set_reg(catc, TxBufCount, 8); |
861 | catc_set_reg(catc, RxBufCount, 32); |
862 | dev_dbg(dev, "64k Memory\n" ); |
863 | break; |
864 | default: |
865 | dev_warn(&intf->dev, |
866 | "Couldn't detect memory size, assuming 32k\n" ); |
867 | fallthrough; |
868 | case 0x87654321: |
869 | catc_set_reg(catc, TxBufCount, 4); |
870 | catc_set_reg(catc, RxBufCount, 16); |
871 | dev_dbg(dev, "32k Memory\n" ); |
872 | break; |
873 | } |
874 | |
875 | kfree(objp: buf); |
876 | |
877 | dev_dbg(dev, "Getting MAC from SEEROM.\n" ); |
878 | |
879 | catc_get_mac(catc, macbuf); |
880 | eth_hw_addr_set(dev: netdev, addr: macbuf); |
881 | |
882 | dev_dbg(dev, "Setting MAC into registers.\n" ); |
883 | |
884 | for (i = 0; i < 6; i++) |
885 | catc_set_reg(catc, StationAddr0 - i, netdev->dev_addr[i]); |
886 | |
887 | dev_dbg(dev, "Filling the multicast list.\n" ); |
888 | |
889 | eth_broadcast_addr(addr: broadcast); |
890 | catc_multicast(addr: broadcast, multicast: catc->multicast); |
891 | catc_multicast(addr: netdev->dev_addr, multicast: catc->multicast); |
892 | catc_write_mem(catc, 0xfa80, catc->multicast, 64); |
893 | |
894 | dev_dbg(dev, "Clearing error counters.\n" ); |
895 | |
896 | for (i = 0; i < 8; i++) |
897 | catc_set_reg(catc, EthStats + i, 0); |
898 | catc->last_stats = jiffies; |
899 | |
900 | dev_dbg(dev, "Enabling.\n" ); |
901 | |
902 | catc_set_reg(catc, MaxBurst, RX_MAX_BURST); |
903 | catc_set_reg(catc, OpModes, OpTxMerge | OpRxMerge | OpLenInclude | Op3MemWaits); |
904 | catc_set_reg(catc, LEDCtrl, LEDLink); |
905 | catc_set_reg(catc, RxUnit, RxEnable | RxPolarity | RxMultiCast); |
906 | } else { |
907 | dev_dbg(dev, "Performing reset\n" ); |
908 | catc_reset(catc); |
909 | catc_get_mac(catc, macbuf); |
910 | eth_hw_addr_set(dev: netdev, addr: macbuf); |
911 | |
912 | dev_dbg(dev, "Setting RX Mode\n" ); |
913 | catc->rxmode[0] = RxEnable | RxPolarity | RxMultiCast; |
914 | catc->rxmode[1] = 0; |
915 | f5u011_rxmode(catc, catc->rxmode); |
916 | } |
917 | dev_dbg(dev, "Init done.\n" ); |
918 | printk(KERN_INFO "%s: %s USB Ethernet at usb-%s-%s, %pM.\n" , |
919 | netdev->name, (catc->is_f5u011) ? "Belkin F5U011" : "CATC EL1210A NetMate" , |
920 | usbdev->bus->bus_name, usbdev->devpath, netdev->dev_addr); |
921 | usb_set_intfdata(intf, data: catc); |
922 | |
923 | SET_NETDEV_DEV(netdev, &intf->dev); |
924 | ret = register_netdev(dev: netdev); |
925 | if (ret) |
926 | goto fail_clear_intfdata; |
927 | |
928 | kfree(objp: macbuf); |
929 | return 0; |
930 | |
931 | fail_clear_intfdata: |
932 | usb_set_intfdata(intf, NULL); |
933 | fail_free: |
934 | usb_free_urb(urb: catc->ctrl_urb); |
935 | usb_free_urb(urb: catc->tx_urb); |
936 | usb_free_urb(urb: catc->rx_urb); |
937 | usb_free_urb(urb: catc->irq_urb); |
938 | free_netdev(dev: netdev); |
939 | fail_mem: |
940 | kfree(objp: macbuf); |
941 | error: |
942 | return ret; |
943 | } |
944 | |
945 | static void catc_disconnect(struct usb_interface *intf) |
946 | { |
947 | struct catc *catc = usb_get_intfdata(intf); |
948 | |
949 | usb_set_intfdata(intf, NULL); |
950 | if (catc) { |
951 | unregister_netdev(dev: catc->netdev); |
952 | usb_free_urb(urb: catc->ctrl_urb); |
953 | usb_free_urb(urb: catc->tx_urb); |
954 | usb_free_urb(urb: catc->rx_urb); |
955 | usb_free_urb(urb: catc->irq_urb); |
956 | free_netdev(dev: catc->netdev); |
957 | } |
958 | } |
959 | |
960 | /* |
961 | * Module functions and tables. |
962 | */ |
963 | |
964 | static const struct usb_device_id catc_id_table[] = { |
965 | { USB_DEVICE(0x0423, 0xa) }, /* CATC Netmate, Belkin F5U011 */ |
966 | { USB_DEVICE(0x0423, 0xc) }, /* CATC Netmate II, Belkin F5U111 */ |
967 | { USB_DEVICE(0x08d1, 0x1) }, /* smartBridges smartNIC */ |
968 | { } |
969 | }; |
970 | |
971 | MODULE_DEVICE_TABLE(usb, catc_id_table); |
972 | |
973 | static struct usb_driver catc_driver = { |
974 | .name = driver_name, |
975 | .probe = catc_probe, |
976 | .disconnect = catc_disconnect, |
977 | .id_table = catc_id_table, |
978 | .disable_hub_initiated_lpm = 1, |
979 | }; |
980 | |
981 | module_usb_driver(catc_driver); |
982 | |