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authorDavid Brownell <david-b@pacbell.net>2005-08-31 12:53:26 -0400
committerGreg Kroah-Hartman <gregkh@suse.de>2005-09-08 19:28:31 -0400
commit904813cd8a0b334189da285bb05af0b18b062502 (patch)
treeb602c3a1b8907dcd9dc43193f41477cfc402fcc2 /drivers/usb/net
parent2e55cc7210fef90f88201e860d8767594974574e (diff)
[PATCH] USB: usbnet (4/9) module for net1080 cables
As with the "cdc_subset" and "asix" drivers, this just moves the net1080 support into its one driver module. In this case there's a small bit of extra cleanup involved, moving some funky framing logic into the tx_fixup() routine (resolving a long overdue FIXME). Minor historical note: "usbnet" started out as "net1080", then got generalized to make it easier for other network drivers to reuse the urb queueing and fault management code here. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/net')
-rw-r--r--drivers/usb/net/Kconfig18
-rw-r--r--drivers/usb/net/Makefile1
-rw-r--r--drivers/usb/net/net1080.c622
-rw-r--r--drivers/usb/net/usbnet.c571
4 files changed, 632 insertions, 580 deletions
diff --git a/drivers/usb/net/Kconfig b/drivers/usb/net/Kconfig
index 4fb51b998cc8..0aa8637e5ff3 100644
--- a/drivers/usb/net/Kconfig
+++ b/drivers/usb/net/Kconfig
@@ -138,15 +138,6 @@ config USB_GENESYS
138 138
139 Note that the half-duplex "GL620USB" is not supported. 139 Note that the half-duplex "GL620USB" is not supported.
140 140
141config USB_NET1080
142 boolean "NetChip 1080 based cables (Laplink, ...)"
143 default y
144 depends on USB_USBNET
145 help
146 Choose this option if you're using a host-to-host cable based
147 on this design: one NetChip 1080 chips and supporting logic,
148 supporting LEDs that indicate traffic
149
150config USB_PL2301 141config USB_PL2301
151 boolean "Prolific PL-2301/2302 based cables" 142 boolean "Prolific PL-2301/2302 based cables"
152 default y 143 default y
@@ -233,6 +224,15 @@ config USB_NET_AX8817X
233 what other networking devices you have in use. 224 what other networking devices you have in use.
234 225
235 226
227config USB_NET_NET1080
228 tristate "NetChip 1080 based cables (Laplink, ...)"
229 default y
230 depends on USB_USBNET
231 help
232 Choose this option if you're using a host-to-host cable based
233 on this design: one NetChip 1080 chip and supporting logic,
234 optionally with LEDs that indicate traffic
235
236config USB_NET_CDC_SUBSET 236config USB_NET_CDC_SUBSET
237 tristate "Simple USB Network Links (CDC Ethernet subset)" 237 tristate "Simple USB Network Links (CDC Ethernet subset)"
238 depends on USB_USBNET 238 depends on USB_USBNET
diff --git a/drivers/usb/net/Makefile b/drivers/usb/net/Makefile
index 60dc91e5cdbf..14d554080aa5 100644
--- a/drivers/usb/net/Makefile
+++ b/drivers/usb/net/Makefile
@@ -7,6 +7,7 @@ obj-$(CONFIG_USB_KAWETH) += kaweth.o
7obj-$(CONFIG_USB_PEGASUS) += pegasus.o 7obj-$(CONFIG_USB_PEGASUS) += pegasus.o
8obj-$(CONFIG_USB_RTL8150) += rtl8150.o 8obj-$(CONFIG_USB_RTL8150) += rtl8150.o
9obj-$(CONFIG_USB_NET_AX8817X) += asix.o 9obj-$(CONFIG_USB_NET_AX8817X) += asix.o
10obj-$(CONFIG_USB_NET_NET1080) += net1080.o
10obj-$(CONFIG_USB_NET_CDC_SUBSET) += cdc_subset.o 11obj-$(CONFIG_USB_NET_CDC_SUBSET) += cdc_subset.o
11obj-$(CONFIG_USB_USBNET) += usbnet.o 12obj-$(CONFIG_USB_USBNET) += usbnet.o
12obj-$(CONFIG_USB_ZD1201) += zd1201.o 13obj-$(CONFIG_USB_ZD1201) += zd1201.o
diff --git a/drivers/usb/net/net1080.c b/drivers/usb/net/net1080.c
new file mode 100644
index 000000000000..a4309c4a491b
--- /dev/null
+++ b/drivers/usb/net/net1080.c
@@ -0,0 +1,622 @@
1/*
2 * Net1080 based USB host-to-host cables
3 * Copyright (C) 2000-2005 by David Brownell
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 */
19
20// #define DEBUG // error path messages, extra info
21// #define VERBOSE // more; success messages
22
23#include <linux/config.h>
24#ifdef CONFIG_USB_DEBUG
25# define DEBUG
26#endif
27#include <linux/module.h>
28#include <linux/sched.h>
29#include <linux/init.h>
30#include <linux/netdevice.h>
31#include <linux/etherdevice.h>
32#include <linux/ethtool.h>
33#include <linux/workqueue.h>
34#include <linux/mii.h>
35#include <linux/usb.h>
36
37#include <asm/unaligned.h>
38
39#include "usbnet.h"
40
41
42/*
43 * Netchip 1080 driver ... http://www.netchip.com
44 * (Sept 2004: End-of-life announcement has been sent.)
45 * Used in (some) LapLink cables
46 */
47
48#define frame_errors data[1]
49
50/*
51 * NetChip framing of ethernet packets, supporting additional error
52 * checks for links that may drop bulk packets from inside messages.
53 * Odd USB length == always short read for last usb packet.
54 * - nc_header
55 * - Ethernet header (14 bytes)
56 * - payload
57 * - (optional padding byte, if needed so length becomes odd)
58 * - nc_trailer
59 *
60 * This framing is to be avoided for non-NetChip devices.
61 */
62
63struct nc_header { // packed:
64 __le16 hdr_len; // sizeof nc_header (LE, all)
65 __le16 packet_len; // payload size (including ethhdr)
66 __le16 packet_id; // detects dropped packets
67#define MIN_HEADER 6
68
69 // all else is optional, and must start with:
70 // __le16 vendorId; // from usb-if
71 // __le16 productId;
72} __attribute__((__packed__));
73
74#define PAD_BYTE ((unsigned char)0xAC)
75
76struct nc_trailer {
77 __le16 packet_id;
78} __attribute__((__packed__));
79
80// packets may use FLAG_FRAMING_NC and optional pad
81#define FRAMED_SIZE(mtu) (sizeof (struct nc_header) \
82 + sizeof (struct ethhdr) \
83 + (mtu) \
84 + 1 \
85 + sizeof (struct nc_trailer))
86
87#define MIN_FRAMED FRAMED_SIZE(0)
88
89/* packets _could_ be up to 64KB... */
90#define NC_MAX_PACKET 32767
91
92
93/*
94 * Zero means no timeout; else, how long a 64 byte bulk packet may be queued
95 * before the hardware drops it. If that's done, the driver will need to
96 * frame network packets to guard against the dropped USB packets. The win32
97 * driver sets this for both sides of the link.
98 */
99#define NC_READ_TTL_MS ((u8)255) // ms
100
101/*
102 * We ignore most registers and EEPROM contents.
103 */
104#define REG_USBCTL ((u8)0x04)
105#define REG_TTL ((u8)0x10)
106#define REG_STATUS ((u8)0x11)
107
108/*
109 * Vendor specific requests to read/write data
110 */
111#define REQUEST_REGISTER ((u8)0x10)
112#define REQUEST_EEPROM ((u8)0x11)
113
114static int
115nc_vendor_read(struct usbnet *dev, u8 req, u8 regnum, u16 *retval_ptr)
116{
117 int status = usb_control_msg(dev->udev,
118 usb_rcvctrlpipe(dev->udev, 0),
119 req,
120 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
121 0, regnum,
122 retval_ptr, sizeof *retval_ptr,
123 USB_CTRL_GET_TIMEOUT);
124 if (status > 0)
125 status = 0;
126 if (!status)
127 le16_to_cpus(retval_ptr);
128 return status;
129}
130
131static inline int
132nc_register_read(struct usbnet *dev, u8 regnum, u16 *retval_ptr)
133{
134 return nc_vendor_read(dev, REQUEST_REGISTER, regnum, retval_ptr);
135}
136
137// no retval ... can become async, usable in_interrupt()
138static void
139nc_vendor_write(struct usbnet *dev, u8 req, u8 regnum, u16 value)
140{
141 usb_control_msg(dev->udev,
142 usb_sndctrlpipe(dev->udev, 0),
143 req,
144 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
145 value, regnum,
146 NULL, 0, // data is in setup packet
147 USB_CTRL_SET_TIMEOUT);
148}
149
150static inline void
151nc_register_write(struct usbnet *dev, u8 regnum, u16 value)
152{
153 nc_vendor_write(dev, REQUEST_REGISTER, regnum, value);
154}
155
156
157#if 0
158static void nc_dump_registers(struct usbnet *dev)
159{
160 u8 reg;
161 u16 *vp = kmalloc(sizeof (u16));
162
163 if (!vp) {
164 dbg("no memory?");
165 return;
166 }
167
168 dbg("%s registers:", dev->net->name);
169 for (reg = 0; reg < 0x20; reg++) {
170 int retval;
171
172 // reading some registers is trouble
173 if (reg >= 0x08 && reg <= 0xf)
174 continue;
175 if (reg >= 0x12 && reg <= 0x1e)
176 continue;
177
178 retval = nc_register_read(dev, reg, vp);
179 if (retval < 0)
180 dbg("%s reg [0x%x] ==> error %d",
181 dev->net->name, reg, retval);
182 else
183 dbg("%s reg [0x%x] = 0x%x",
184 dev->net->name, reg, *vp);
185 }
186 kfree(vp);
187}
188#endif
189
190
191/*-------------------------------------------------------------------------*/
192
193/*
194 * Control register
195 */
196
197#define USBCTL_WRITABLE_MASK 0x1f0f
198// bits 15-13 reserved, r/o
199#define USBCTL_ENABLE_LANG (1 << 12)
200#define USBCTL_ENABLE_MFGR (1 << 11)
201#define USBCTL_ENABLE_PROD (1 << 10)
202#define USBCTL_ENABLE_SERIAL (1 << 9)
203#define USBCTL_ENABLE_DEFAULTS (1 << 8)
204// bits 7-4 reserved, r/o
205#define USBCTL_FLUSH_OTHER (1 << 3)
206#define USBCTL_FLUSH_THIS (1 << 2)
207#define USBCTL_DISCONN_OTHER (1 << 1)
208#define USBCTL_DISCONN_THIS (1 << 0)
209
210static inline void nc_dump_usbctl(struct usbnet *dev, u16 usbctl)
211{
212 if (!netif_msg_link(dev))
213 return;
214 devdbg(dev, "net1080 %s-%s usbctl 0x%x:%s%s%s%s%s;"
215 " this%s%s;"
216 " other%s%s; r/o 0x%x",
217 dev->udev->bus->bus_name, dev->udev->devpath,
218 usbctl,
219 (usbctl & USBCTL_ENABLE_LANG) ? " lang" : "",
220 (usbctl & USBCTL_ENABLE_MFGR) ? " mfgr" : "",
221 (usbctl & USBCTL_ENABLE_PROD) ? " prod" : "",
222 (usbctl & USBCTL_ENABLE_SERIAL) ? " serial" : "",
223 (usbctl & USBCTL_ENABLE_DEFAULTS) ? " defaults" : "",
224
225 (usbctl & USBCTL_FLUSH_OTHER) ? " FLUSH" : "",
226 (usbctl & USBCTL_DISCONN_OTHER) ? " DIS" : "",
227 (usbctl & USBCTL_FLUSH_THIS) ? " FLUSH" : "",
228 (usbctl & USBCTL_DISCONN_THIS) ? " DIS" : "",
229 usbctl & ~USBCTL_WRITABLE_MASK
230 );
231}
232
233/*-------------------------------------------------------------------------*/
234
235/*
236 * Status register
237 */
238
239#define STATUS_PORT_A (1 << 15)
240
241#define STATUS_CONN_OTHER (1 << 14)
242#define STATUS_SUSPEND_OTHER (1 << 13)
243#define STATUS_MAILBOX_OTHER (1 << 12)
244#define STATUS_PACKETS_OTHER(n) (((n) >> 8) && 0x03)
245
246#define STATUS_CONN_THIS (1 << 6)
247#define STATUS_SUSPEND_THIS (1 << 5)
248#define STATUS_MAILBOX_THIS (1 << 4)
249#define STATUS_PACKETS_THIS(n) (((n) >> 0) && 0x03)
250
251#define STATUS_UNSPEC_MASK 0x0c8c
252#define STATUS_NOISE_MASK ((u16)~(0x0303|STATUS_UNSPEC_MASK))
253
254
255static inline void nc_dump_status(struct usbnet *dev, u16 status)
256{
257 if (!netif_msg_link(dev))
258 return;
259 devdbg(dev, "net1080 %s-%s status 0x%x:"
260 " this (%c) PKT=%d%s%s%s;"
261 " other PKT=%d%s%s%s; unspec 0x%x",
262 dev->udev->bus->bus_name, dev->udev->devpath,
263 status,
264
265 // XXX the packet counts don't seem right
266 // (1 at reset, not 0); maybe UNSPEC too
267
268 (status & STATUS_PORT_A) ? 'A' : 'B',
269 STATUS_PACKETS_THIS(status),
270 (status & STATUS_CONN_THIS) ? " CON" : "",
271 (status & STATUS_SUSPEND_THIS) ? " SUS" : "",
272 (status & STATUS_MAILBOX_THIS) ? " MBOX" : "",
273
274 STATUS_PACKETS_OTHER(status),
275 (status & STATUS_CONN_OTHER) ? " CON" : "",
276 (status & STATUS_SUSPEND_OTHER) ? " SUS" : "",
277 (status & STATUS_MAILBOX_OTHER) ? " MBOX" : "",
278
279 status & STATUS_UNSPEC_MASK
280 );
281}
282
283/*-------------------------------------------------------------------------*/
284
285/*
286 * TTL register
287 */
288
289#define TTL_THIS(ttl) (0x00ff & ttl)
290#define TTL_OTHER(ttl) (0x00ff & (ttl >> 8))
291#define MK_TTL(this,other) ((u16)(((other)<<8)|(0x00ff&(this))))
292
293static inline void nc_dump_ttl(struct usbnet *dev, u16 ttl)
294{
295 if (netif_msg_link(dev))
296 devdbg(dev, "net1080 %s-%s ttl 0x%x this = %d, other = %d",
297 dev->udev->bus->bus_name, dev->udev->devpath,
298 ttl, TTL_THIS(ttl), TTL_OTHER(ttl));
299}
300
301/*-------------------------------------------------------------------------*/
302
303static int net1080_reset(struct usbnet *dev)
304{
305 u16 usbctl, status, ttl;
306 u16 *vp = kmalloc(sizeof (u16), GFP_KERNEL);
307 int retval;
308
309 if (!vp)
310 return -ENOMEM;
311
312 // nc_dump_registers(dev);
313
314 if ((retval = nc_register_read(dev, REG_STATUS, vp)) < 0) {
315 dbg("can't read %s-%s status: %d",
316 dev->udev->bus->bus_name, dev->udev->devpath, retval);
317 goto done;
318 }
319 status = *vp;
320 nc_dump_status(dev, status);
321
322 if ((retval = nc_register_read(dev, REG_USBCTL, vp)) < 0) {
323 dbg("can't read USBCTL, %d", retval);
324 goto done;
325 }
326 usbctl = *vp;
327 nc_dump_usbctl(dev, usbctl);
328
329 nc_register_write(dev, REG_USBCTL,
330 USBCTL_FLUSH_THIS | USBCTL_FLUSH_OTHER);
331
332 if ((retval = nc_register_read(dev, REG_TTL, vp)) < 0) {
333 dbg("can't read TTL, %d", retval);
334 goto done;
335 }
336 ttl = *vp;
337 // nc_dump_ttl(dev, ttl);
338
339 nc_register_write(dev, REG_TTL,
340 MK_TTL(NC_READ_TTL_MS, TTL_OTHER(ttl)) );
341 dbg("%s: assigned TTL, %d ms", dev->net->name, NC_READ_TTL_MS);
342
343 if (netif_msg_link(dev))
344 devinfo(dev, "port %c, peer %sconnected",
345 (status & STATUS_PORT_A) ? 'A' : 'B',
346 (status & STATUS_CONN_OTHER) ? "" : "dis"
347 );
348 retval = 0;
349
350done:
351 kfree(vp);
352 return retval;
353}
354
355static int net1080_check_connect(struct usbnet *dev)
356{
357 int retval;
358 u16 status;
359 u16 *vp = kmalloc(sizeof (u16), GFP_KERNEL);
360
361 if (!vp)
362 return -ENOMEM;
363 retval = nc_register_read(dev, REG_STATUS, vp);
364 status = *vp;
365 kfree(vp);
366 if (retval != 0) {
367 dbg("%s net1080_check_conn read - %d", dev->net->name, retval);
368 return retval;
369 }
370 if ((status & STATUS_CONN_OTHER) != STATUS_CONN_OTHER)
371 return -ENOLINK;
372 return 0;
373}
374
375static void nc_flush_complete(struct urb *urb, struct pt_regs *regs)
376{
377 kfree(urb->context);
378 usb_free_urb(urb);
379}
380
381static void nc_ensure_sync(struct usbnet *dev)
382{
383 dev->frame_errors++;
384 if (dev->frame_errors > 5) {
385 struct urb *urb;
386 struct usb_ctrlrequest *req;
387 int status;
388
389 /* Send a flush */
390 urb = usb_alloc_urb(0, SLAB_ATOMIC);
391 if (!urb)
392 return;
393
394 req = kmalloc(sizeof *req, GFP_ATOMIC);
395 if (!req) {
396 usb_free_urb(urb);
397 return;
398 }
399
400 req->bRequestType = USB_DIR_OUT
401 | USB_TYPE_VENDOR
402 | USB_RECIP_DEVICE;
403 req->bRequest = REQUEST_REGISTER;
404 req->wValue = cpu_to_le16(USBCTL_FLUSH_THIS
405 | USBCTL_FLUSH_OTHER);
406 req->wIndex = cpu_to_le16(REG_USBCTL);
407 req->wLength = cpu_to_le16(0);
408
409 /* queue an async control request, we don't need
410 * to do anything when it finishes except clean up.
411 */
412 usb_fill_control_urb(urb, dev->udev,
413 usb_sndctrlpipe(dev->udev, 0),
414 (unsigned char *) req,
415 NULL, 0,
416 nc_flush_complete, req);
417 status = usb_submit_urb(urb, GFP_ATOMIC);
418 if (status) {
419 kfree(req);
420 usb_free_urb(urb);
421 return;
422 }
423
424 if (netif_msg_rx_err(dev))
425 devdbg(dev, "flush net1080; too many framing errors");
426 dev->frame_errors = 0;
427 }
428}
429
430static int net1080_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
431{
432 struct nc_header *header;
433 struct nc_trailer *trailer;
434 u16 hdr_len, packet_len;
435
436 if (!(skb->len & 0x01)) {
437#ifdef DEBUG
438 struct net_device *net = dev->net;
439 dbg("rx framesize %d range %d..%d mtu %d", skb->len,
440 net->hard_header_len, dev->hard_mtu, net->mtu);
441#endif
442 dev->stats.rx_frame_errors++;
443 nc_ensure_sync(dev);
444 return 0;
445 }
446
447 header = (struct nc_header *) skb->data;
448 hdr_len = le16_to_cpup(&header->hdr_len);
449 packet_len = le16_to_cpup(&header->packet_len);
450 if (FRAMED_SIZE(packet_len) > NC_MAX_PACKET) {
451 dev->stats.rx_frame_errors++;
452 dbg("packet too big, %d", packet_len);
453 nc_ensure_sync(dev);
454 return 0;
455 } else if (hdr_len < MIN_HEADER) {
456 dev->stats.rx_frame_errors++;
457 dbg("header too short, %d", hdr_len);
458 nc_ensure_sync(dev);
459 return 0;
460 } else if (hdr_len > MIN_HEADER) {
461 // out of band data for us?
462 dbg("header OOB, %d bytes", hdr_len - MIN_HEADER);
463 nc_ensure_sync(dev);
464 // switch (vendor/product ids) { ... }
465 }
466 skb_pull(skb, hdr_len);
467
468 trailer = (struct nc_trailer *)
469 (skb->data + skb->len - sizeof *trailer);
470 skb_trim(skb, skb->len - sizeof *trailer);
471
472 if ((packet_len & 0x01) == 0) {
473 if (skb->data [packet_len] != PAD_BYTE) {
474 dev->stats.rx_frame_errors++;
475 dbg("bad pad");
476 return 0;
477 }
478 skb_trim(skb, skb->len - 1);
479 }
480 if (skb->len != packet_len) {
481 dev->stats.rx_frame_errors++;
482 dbg("bad packet len %d (expected %d)",
483 skb->len, packet_len);
484 nc_ensure_sync(dev);
485 return 0;
486 }
487 if (header->packet_id != get_unaligned(&trailer->packet_id)) {
488 dev->stats.rx_fifo_errors++;
489 dbg("(2+ dropped) rx packet_id mismatch 0x%x 0x%x",
490 le16_to_cpu(header->packet_id),
491 le16_to_cpu(trailer->packet_id));
492 return 0;
493 }
494#if 0
495 devdbg(dev, "frame <rx h %d p %d id %d", header->hdr_len,
496 header->packet_len, header->packet_id);
497#endif
498 dev->frame_errors = 0;
499 return 1;
500}
501
502static struct sk_buff *
503net1080_tx_fixup(struct usbnet *dev, struct sk_buff *skb, unsigned flags)
504{
505 int padlen;
506 struct sk_buff *skb2;
507 struct nc_header *header = NULL;
508 struct nc_trailer *trailer = NULL;
509 int len = skb->len;
510
511 padlen = ((len + sizeof (struct nc_header)
512 + sizeof (struct nc_trailer)) & 0x01) ? 0 : 1;
513 if (!skb_cloned(skb)) {
514 int headroom = skb_headroom(skb);
515 int tailroom = skb_tailroom(skb);
516
517 if ((padlen + sizeof (struct nc_trailer)) <= tailroom
518 && sizeof (struct nc_header) <= headroom)
519 /* There's enough head and tail room */
520 goto encapsulate;
521
522 if ((sizeof (struct nc_header) + padlen
523 + sizeof (struct nc_trailer)) <
524 (headroom + tailroom)) {
525 /* There's enough total room, so just readjust */
526 skb->data = memmove(skb->head
527 + sizeof (struct nc_header),
528 skb->data, skb->len);
529 skb->tail = skb->data + len;
530 goto encapsulate;
531 }
532 }
533
534 /* Create a new skb to use with the correct size */
535 skb2 = skb_copy_expand(skb,
536 sizeof (struct nc_header),
537 sizeof (struct nc_trailer) + padlen,
538 flags);
539 dev_kfree_skb_any(skb);
540 if (!skb2)
541 return skb2;
542 skb = skb2;
543
544encapsulate:
545 /* header first */
546 header = (struct nc_header *) skb_push(skb, sizeof *header);
547 header->hdr_len = cpu_to_le16(sizeof (*header));
548 header->packet_len = cpu_to_le16(len);
549 header->packet_id = cpu_to_le16((u16)dev->xid++);
550
551 /* maybe pad; then trailer */
552 if (!((skb->len + sizeof *trailer) & 0x01))
553 *skb_put(skb, 1) = PAD_BYTE;
554 trailer = (struct nc_trailer *) skb_put(skb, sizeof *trailer);
555 put_unaligned(header->packet_id, &trailer->packet_id);
556#if 0
557 devdbg(dev, "frame >tx h %d p %d id %d",
558 header->hdr_len, header->packet_len,
559 header->packet_id);
560#endif
561 return skb;
562}
563
564static int net1080_bind(struct usbnet *dev, struct usb_interface *intf)
565{
566 unsigned extra = sizeof (struct nc_header)
567 + 1
568 + sizeof (struct nc_trailer);
569
570 dev->net->hard_header_len += extra;
571 dev->rx_urb_size = dev->net->hard_header_len + dev->net->mtu;
572 dev->hard_mtu = NC_MAX_PACKET;
573 return usbnet_get_endpoints (dev, intf);
574}
575
576static const struct driver_info net1080_info = {
577 .description = "NetChip TurboCONNECT",
578 .flags = FLAG_FRAMING_NC,
579 .bind = net1080_bind,
580 .reset = net1080_reset,
581 .check_connect = net1080_check_connect,
582 .rx_fixup = net1080_rx_fixup,
583 .tx_fixup = net1080_tx_fixup,
584};
585
586static const struct usb_device_id products [] = {
587{
588 USB_DEVICE(0x0525, 0x1080), // NetChip ref design
589 .driver_info = (unsigned long) &net1080_info,
590}, {
591 USB_DEVICE(0x06D0, 0x0622), // Laplink Gold
592 .driver_info = (unsigned long) &net1080_info,
593},
594 { }, // END
595};
596MODULE_DEVICE_TABLE(usb, products);
597
598static struct usb_driver net1080_driver = {
599 .owner = THIS_MODULE,
600 .name = "net1080",
601 .id_table = products,
602 .probe = usbnet_probe,
603 .disconnect = usbnet_disconnect,
604 .suspend = usbnet_suspend,
605 .resume = usbnet_resume,
606};
607
608static int __init net1080_init(void)
609{
610 return usb_register(&net1080_driver);
611}
612module_init(net1080_init);
613
614static void __exit net1080_exit(void)
615{
616 usb_deregister(&net1080_driver);
617}
618module_exit(net1080_exit);
619
620MODULE_AUTHOR("David Brownell");
621MODULE_DESCRIPTION("NetChip 1080 based USB Host-to-Host Links");
622MODULE_LICENSE("GPL");
diff --git a/drivers/usb/net/usbnet.c b/drivers/usb/net/usbnet.c
index 99a488140140..590bf31ae1f4 100644
--- a/drivers/usb/net/usbnet.c
+++ b/drivers/usb/net/usbnet.c
@@ -119,7 +119,6 @@
119# define DEBUG 119# define DEBUG
120#endif 120#endif
121#include <linux/module.h> 121#include <linux/module.h>
122#include <linux/kmod.h>
123#include <linux/sched.h> 122#include <linux/sched.h>
124#include <linux/init.h> 123#include <linux/init.h>
125#include <linux/netdevice.h> 124#include <linux/netdevice.h>
@@ -128,10 +127,6 @@
128#include <linux/workqueue.h> 127#include <linux/workqueue.h>
129#include <linux/mii.h> 128#include <linux/mii.h>
130#include <linux/usb.h> 129#include <linux/usb.h>
131#include <linux/mm.h>
132#include <linux/dma-mapping.h>
133
134#include <asm/unaligned.h>
135 130
136#include "usbnet.h" 131#include "usbnet.h"
137 132
@@ -1030,531 +1025,6 @@ static const struct driver_info genelink_info = {
1030 1025
1031 1026
1032 1027
1033#ifdef CONFIG_USB_NET1080
1034#define HAVE_HARDWARE
1035
1036/*-------------------------------------------------------------------------
1037 *
1038 * Netchip 1080 driver ... http://www.netchip.com
1039 * Used in LapLink cables
1040 *
1041 *-------------------------------------------------------------------------*/
1042
1043#define frame_errors data[1]
1044
1045/*
1046 * NetChip framing of ethernet packets, supporting additional error
1047 * checks for links that may drop bulk packets from inside messages.
1048 * Odd USB length == always short read for last usb packet.
1049 * - nc_header
1050 * - Ethernet header (14 bytes)
1051 * - payload
1052 * - (optional padding byte, if needed so length becomes odd)
1053 * - nc_trailer
1054 *
1055 * This framing is to be avoided for non-NetChip devices.
1056 */
1057
1058struct nc_header { // packed:
1059 __le16 hdr_len; // sizeof nc_header (LE, all)
1060 __le16 packet_len; // payload size (including ethhdr)
1061 __le16 packet_id; // detects dropped packets
1062#define MIN_HEADER 6
1063
1064 // all else is optional, and must start with:
1065 // u16 vendorId; // from usb-if
1066 // u16 productId;
1067} __attribute__((__packed__));
1068
1069#define PAD_BYTE ((unsigned char)0xAC)
1070
1071struct nc_trailer {
1072 __le16 packet_id;
1073} __attribute__((__packed__));
1074
1075// packets may use FLAG_FRAMING_NC and optional pad
1076#define FRAMED_SIZE(mtu) (sizeof (struct nc_header) \
1077 + sizeof (struct ethhdr) \
1078 + (mtu) \
1079 + 1 \
1080 + sizeof (struct nc_trailer))
1081
1082#define MIN_FRAMED FRAMED_SIZE(0)
1083
1084/* packets _could_ be up to 64KB... */
1085#define NC_MAX_PACKET 32767
1086
1087
1088/*
1089 * Zero means no timeout; else, how long a 64 byte bulk packet may be queued
1090 * before the hardware drops it. If that's done, the driver will need to
1091 * frame network packets to guard against the dropped USB packets. The win32
1092 * driver sets this for both sides of the link.
1093 */
1094#define NC_READ_TTL_MS ((u8)255) // ms
1095
1096/*
1097 * We ignore most registers and EEPROM contents.
1098 */
1099#define REG_USBCTL ((u8)0x04)
1100#define REG_TTL ((u8)0x10)
1101#define REG_STATUS ((u8)0x11)
1102
1103/*
1104 * Vendor specific requests to read/write data
1105 */
1106#define REQUEST_REGISTER ((u8)0x10)
1107#define REQUEST_EEPROM ((u8)0x11)
1108
1109static int
1110nc_vendor_read (struct usbnet *dev, u8 req, u8 regnum, u16 *retval_ptr)
1111{
1112 int status = usb_control_msg (dev->udev,
1113 usb_rcvctrlpipe (dev->udev, 0),
1114 req,
1115 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
1116 0, regnum,
1117 retval_ptr, sizeof *retval_ptr,
1118 CONTROL_TIMEOUT_MS);
1119 if (status > 0)
1120 status = 0;
1121 if (!status)
1122 le16_to_cpus (retval_ptr);
1123 return status;
1124}
1125
1126static inline int
1127nc_register_read (struct usbnet *dev, u8 regnum, u16 *retval_ptr)
1128{
1129 return nc_vendor_read (dev, REQUEST_REGISTER, regnum, retval_ptr);
1130}
1131
1132// no retval ... can become async, usable in_interrupt()
1133static void
1134nc_vendor_write (struct usbnet *dev, u8 req, u8 regnum, u16 value)
1135{
1136 usb_control_msg (dev->udev,
1137 usb_sndctrlpipe (dev->udev, 0),
1138 req,
1139 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
1140 value, regnum,
1141 NULL, 0, // data is in setup packet
1142 CONTROL_TIMEOUT_MS);
1143}
1144
1145static inline void
1146nc_register_write (struct usbnet *dev, u8 regnum, u16 value)
1147{
1148 nc_vendor_write (dev, REQUEST_REGISTER, regnum, value);
1149}
1150
1151
1152#if 0
1153static void nc_dump_registers (struct usbnet *dev)
1154{
1155 u8 reg;
1156 u16 *vp = kmalloc (sizeof (u16));
1157
1158 if (!vp) {
1159 dbg ("no memory?");
1160 return;
1161 }
1162
1163 dbg ("%s registers:", dev->net->name);
1164 for (reg = 0; reg < 0x20; reg++) {
1165 int retval;
1166
1167 // reading some registers is trouble
1168 if (reg >= 0x08 && reg <= 0xf)
1169 continue;
1170 if (reg >= 0x12 && reg <= 0x1e)
1171 continue;
1172
1173 retval = nc_register_read (dev, reg, vp);
1174 if (retval < 0)
1175 dbg ("%s reg [0x%x] ==> error %d",
1176 dev->net->name, reg, retval);
1177 else
1178 dbg ("%s reg [0x%x] = 0x%x",
1179 dev->net->name, reg, *vp);
1180 }
1181 kfree (vp);
1182}
1183#endif
1184
1185
1186/*-------------------------------------------------------------------------*/
1187
1188/*
1189 * Control register
1190 */
1191
1192#define USBCTL_WRITABLE_MASK 0x1f0f
1193// bits 15-13 reserved, r/o
1194#define USBCTL_ENABLE_LANG (1 << 12)
1195#define USBCTL_ENABLE_MFGR (1 << 11)
1196#define USBCTL_ENABLE_PROD (1 << 10)
1197#define USBCTL_ENABLE_SERIAL (1 << 9)
1198#define USBCTL_ENABLE_DEFAULTS (1 << 8)
1199// bits 7-4 reserved, r/o
1200#define USBCTL_FLUSH_OTHER (1 << 3)
1201#define USBCTL_FLUSH_THIS (1 << 2)
1202#define USBCTL_DISCONN_OTHER (1 << 1)
1203#define USBCTL_DISCONN_THIS (1 << 0)
1204
1205static inline void nc_dump_usbctl (struct usbnet *dev, u16 usbctl)
1206{
1207 if (!netif_msg_link (dev))
1208 return;
1209 devdbg (dev, "net1080 %s-%s usbctl 0x%x:%s%s%s%s%s;"
1210 " this%s%s;"
1211 " other%s%s; r/o 0x%x",
1212 dev->udev->bus->bus_name, dev->udev->devpath,
1213 usbctl,
1214 (usbctl & USBCTL_ENABLE_LANG) ? " lang" : "",
1215 (usbctl & USBCTL_ENABLE_MFGR) ? " mfgr" : "",
1216 (usbctl & USBCTL_ENABLE_PROD) ? " prod" : "",
1217 (usbctl & USBCTL_ENABLE_SERIAL) ? " serial" : "",
1218 (usbctl & USBCTL_ENABLE_DEFAULTS) ? " defaults" : "",
1219
1220 (usbctl & USBCTL_FLUSH_OTHER) ? " FLUSH" : "",
1221 (usbctl & USBCTL_DISCONN_OTHER) ? " DIS" : "",
1222 (usbctl & USBCTL_FLUSH_THIS) ? " FLUSH" : "",
1223 (usbctl & USBCTL_DISCONN_THIS) ? " DIS" : "",
1224 usbctl & ~USBCTL_WRITABLE_MASK
1225 );
1226}
1227
1228/*-------------------------------------------------------------------------*/
1229
1230/*
1231 * Status register
1232 */
1233
1234#define STATUS_PORT_A (1 << 15)
1235
1236#define STATUS_CONN_OTHER (1 << 14)
1237#define STATUS_SUSPEND_OTHER (1 << 13)
1238#define STATUS_MAILBOX_OTHER (1 << 12)
1239#define STATUS_PACKETS_OTHER(n) (((n) >> 8) && 0x03)
1240
1241#define STATUS_CONN_THIS (1 << 6)
1242#define STATUS_SUSPEND_THIS (1 << 5)
1243#define STATUS_MAILBOX_THIS (1 << 4)
1244#define STATUS_PACKETS_THIS(n) (((n) >> 0) && 0x03)
1245
1246#define STATUS_UNSPEC_MASK 0x0c8c
1247#define STATUS_NOISE_MASK ((u16)~(0x0303|STATUS_UNSPEC_MASK))
1248
1249
1250static inline void nc_dump_status (struct usbnet *dev, u16 status)
1251{
1252 if (!netif_msg_link (dev))
1253 return;
1254 devdbg (dev, "net1080 %s-%s status 0x%x:"
1255 " this (%c) PKT=%d%s%s%s;"
1256 " other PKT=%d%s%s%s; unspec 0x%x",
1257 dev->udev->bus->bus_name, dev->udev->devpath,
1258 status,
1259
1260 // XXX the packet counts don't seem right
1261 // (1 at reset, not 0); maybe UNSPEC too
1262
1263 (status & STATUS_PORT_A) ? 'A' : 'B',
1264 STATUS_PACKETS_THIS (status),
1265 (status & STATUS_CONN_THIS) ? " CON" : "",
1266 (status & STATUS_SUSPEND_THIS) ? " SUS" : "",
1267 (status & STATUS_MAILBOX_THIS) ? " MBOX" : "",
1268
1269 STATUS_PACKETS_OTHER (status),
1270 (status & STATUS_CONN_OTHER) ? " CON" : "",
1271 (status & STATUS_SUSPEND_OTHER) ? " SUS" : "",
1272 (status & STATUS_MAILBOX_OTHER) ? " MBOX" : "",
1273
1274 status & STATUS_UNSPEC_MASK
1275 );
1276}
1277
1278/*-------------------------------------------------------------------------*/
1279
1280/*
1281 * TTL register
1282 */
1283
1284#define TTL_THIS(ttl) (0x00ff & ttl)
1285#define TTL_OTHER(ttl) (0x00ff & (ttl >> 8))
1286#define MK_TTL(this,other) ((u16)(((other)<<8)|(0x00ff&(this))))
1287
1288static inline void nc_dump_ttl (struct usbnet *dev, u16 ttl)
1289{
1290 if (netif_msg_link (dev))
1291 devdbg (dev, "net1080 %s-%s ttl 0x%x this = %d, other = %d",
1292 dev->udev->bus->bus_name, dev->udev->devpath,
1293 ttl, TTL_THIS (ttl), TTL_OTHER (ttl));
1294}
1295
1296/*-------------------------------------------------------------------------*/
1297
1298static int net1080_reset (struct usbnet *dev)
1299{
1300 u16 usbctl, status, ttl;
1301 u16 *vp = kmalloc (sizeof (u16), GFP_KERNEL);
1302 int retval;
1303
1304 if (!vp)
1305 return -ENOMEM;
1306
1307 // nc_dump_registers (dev);
1308
1309 if ((retval = nc_register_read (dev, REG_STATUS, vp)) < 0) {
1310 dbg ("can't read %s-%s status: %d",
1311 dev->udev->bus->bus_name, dev->udev->devpath, retval);
1312 goto done;
1313 }
1314 status = *vp;
1315 nc_dump_status (dev, status);
1316
1317 if ((retval = nc_register_read (dev, REG_USBCTL, vp)) < 0) {
1318 dbg ("can't read USBCTL, %d", retval);
1319 goto done;
1320 }
1321 usbctl = *vp;
1322 nc_dump_usbctl (dev, usbctl);
1323
1324 nc_register_write (dev, REG_USBCTL,
1325 USBCTL_FLUSH_THIS | USBCTL_FLUSH_OTHER);
1326
1327 if ((retval = nc_register_read (dev, REG_TTL, vp)) < 0) {
1328 dbg ("can't read TTL, %d", retval);
1329 goto done;
1330 }
1331 ttl = *vp;
1332 // nc_dump_ttl (dev, ttl);
1333
1334 nc_register_write (dev, REG_TTL,
1335 MK_TTL (NC_READ_TTL_MS, TTL_OTHER (ttl)) );
1336 dbg ("%s: assigned TTL, %d ms", dev->net->name, NC_READ_TTL_MS);
1337
1338 if (netif_msg_link (dev))
1339 devinfo (dev, "port %c, peer %sconnected",
1340 (status & STATUS_PORT_A) ? 'A' : 'B',
1341 (status & STATUS_CONN_OTHER) ? "" : "dis"
1342 );
1343 retval = 0;
1344
1345done:
1346 kfree (vp);
1347 return retval;
1348}
1349
1350static int net1080_check_connect (struct usbnet *dev)
1351{
1352 int retval;
1353 u16 status;
1354 u16 *vp = kmalloc (sizeof (u16), GFP_KERNEL);
1355
1356 if (!vp)
1357 return -ENOMEM;
1358 retval = nc_register_read (dev, REG_STATUS, vp);
1359 status = *vp;
1360 kfree (vp);
1361 if (retval != 0) {
1362 dbg ("%s net1080_check_conn read - %d", dev->net->name, retval);
1363 return retval;
1364 }
1365 if ((status & STATUS_CONN_OTHER) != STATUS_CONN_OTHER)
1366 return -ENOLINK;
1367 return 0;
1368}
1369
1370static void nc_flush_complete (struct urb *urb, struct pt_regs *regs)
1371{
1372 kfree (urb->context);
1373 usb_free_urb(urb);
1374}
1375
1376static void nc_ensure_sync (struct usbnet *dev)
1377{
1378 dev->frame_errors++;
1379 if (dev->frame_errors > 5) {
1380 struct urb *urb;
1381 struct usb_ctrlrequest *req;
1382 int status;
1383
1384 /* Send a flush */
1385 urb = usb_alloc_urb (0, SLAB_ATOMIC);
1386 if (!urb)
1387 return;
1388
1389 req = kmalloc (sizeof *req, GFP_ATOMIC);
1390 if (!req) {
1391 usb_free_urb (urb);
1392 return;
1393 }
1394
1395 req->bRequestType = USB_DIR_OUT
1396 | USB_TYPE_VENDOR
1397 | USB_RECIP_DEVICE;
1398 req->bRequest = REQUEST_REGISTER;
1399 req->wValue = cpu_to_le16 (USBCTL_FLUSH_THIS
1400 | USBCTL_FLUSH_OTHER);
1401 req->wIndex = cpu_to_le16 (REG_USBCTL);
1402 req->wLength = cpu_to_le16 (0);
1403
1404 /* queue an async control request, we don't need
1405 * to do anything when it finishes except clean up.
1406 */
1407 usb_fill_control_urb (urb, dev->udev,
1408 usb_sndctrlpipe (dev->udev, 0),
1409 (unsigned char *) req,
1410 NULL, 0,
1411 nc_flush_complete, req);
1412 status = usb_submit_urb (urb, GFP_ATOMIC);
1413 if (status) {
1414 kfree (req);
1415 usb_free_urb (urb);
1416 return;
1417 }
1418
1419 if (netif_msg_rx_err (dev))
1420 devdbg (dev, "flush net1080; too many framing errors");
1421 dev->frame_errors = 0;
1422 }
1423}
1424
1425static int net1080_rx_fixup (struct usbnet *dev, struct sk_buff *skb)
1426{
1427 struct nc_header *header;
1428 struct net_device *net = dev->net;
1429 struct nc_trailer *trailer;
1430 u16 hdr_len, packet_len;
1431
1432 if (!(skb->len & 0x01)) {
1433 dev->stats.rx_frame_errors++;
1434 dbg ("rx framesize %d range %d..%d mtu %d", skb->len,
1435 net->hard_header_len, dev->hard_mtu, net->mtu);
1436 nc_ensure_sync (dev);
1437 return 0;
1438 }
1439
1440 header = (struct nc_header *) skb->data;
1441 hdr_len = le16_to_cpup (&header->hdr_len);
1442 packet_len = le16_to_cpup (&header->packet_len);
1443 if (FRAMED_SIZE (packet_len) > NC_MAX_PACKET) {
1444 dev->stats.rx_frame_errors++;
1445 dbg ("packet too big, %d", packet_len);
1446 nc_ensure_sync (dev);
1447 return 0;
1448 } else if (hdr_len < MIN_HEADER) {
1449 dev->stats.rx_frame_errors++;
1450 dbg ("header too short, %d", hdr_len);
1451 nc_ensure_sync (dev);
1452 return 0;
1453 } else if (hdr_len > MIN_HEADER) {
1454 // out of band data for us?
1455 dbg ("header OOB, %d bytes", hdr_len - MIN_HEADER);
1456 nc_ensure_sync (dev);
1457 // switch (vendor/product ids) { ... }
1458 }
1459 skb_pull (skb, hdr_len);
1460
1461 trailer = (struct nc_trailer *)
1462 (skb->data + skb->len - sizeof *trailer);
1463 skb_trim (skb, skb->len - sizeof *trailer);
1464
1465 if ((packet_len & 0x01) == 0) {
1466 if (skb->data [packet_len] != PAD_BYTE) {
1467 dev->stats.rx_frame_errors++;
1468 dbg ("bad pad");
1469 return 0;
1470 }
1471 skb_trim (skb, skb->len - 1);
1472 }
1473 if (skb->len != packet_len) {
1474 dev->stats.rx_frame_errors++;
1475 dbg ("bad packet len %d (expected %d)",
1476 skb->len, packet_len);
1477 nc_ensure_sync (dev);
1478 return 0;
1479 }
1480 if (header->packet_id != get_unaligned (&trailer->packet_id)) {
1481 dev->stats.rx_fifo_errors++;
1482 dbg ("(2+ dropped) rx packet_id mismatch 0x%x 0x%x",
1483 le16_to_cpu (header->packet_id),
1484 le16_to_cpu (trailer->packet_id));
1485 return 0;
1486 }
1487#if 0
1488 devdbg (dev, "frame <rx h %d p %d id %d", header->hdr_len,
1489 header->packet_len, header->packet_id);
1490#endif
1491 dev->frame_errors = 0;
1492 return 1;
1493}
1494
1495static struct sk_buff *
1496net1080_tx_fixup (struct usbnet *dev, struct sk_buff *skb, unsigned flags)
1497{
1498 int padlen;
1499 struct sk_buff *skb2;
1500
1501 padlen = ((skb->len + sizeof (struct nc_header)
1502 + sizeof (struct nc_trailer)) & 0x01) ? 0 : 1;
1503 if (!skb_cloned (skb)) {
1504 int headroom = skb_headroom (skb);
1505 int tailroom = skb_tailroom (skb);
1506
1507 if ((padlen + sizeof (struct nc_trailer)) <= tailroom
1508 && sizeof (struct nc_header) <= headroom)
1509 /* There's enough head and tail room */
1510 return skb;
1511
1512 if ((sizeof (struct nc_header) + padlen
1513 + sizeof (struct nc_trailer)) <
1514 (headroom + tailroom)) {
1515 /* There's enough total room, so just readjust */
1516 skb->data = memmove (skb->head
1517 + sizeof (struct nc_header),
1518 skb->data, skb->len);
1519 skb->tail = skb->data + skb->len;
1520 return skb;
1521 }
1522 }
1523
1524 /* Create a new skb to use with the correct size */
1525 skb2 = skb_copy_expand (skb,
1526 sizeof (struct nc_header),
1527 sizeof (struct nc_trailer) + padlen,
1528 flags);
1529 dev_kfree_skb_any (skb);
1530 return skb2;
1531}
1532
1533static int net1080_bind (struct usbnet *dev, struct usb_interface *intf)
1534{
1535 unsigned extra = sizeof (struct nc_header)
1536 + 1
1537 + sizeof (struct nc_trailer);
1538
1539 dev->net->hard_header_len += extra;
1540 dev->hard_mtu = NC_MAX_PACKET;
1541 return 0;
1542}
1543
1544static const struct driver_info net1080_info = {
1545 .description = "NetChip TurboCONNECT",
1546 .flags = FLAG_FRAMING_NC,
1547 .bind = net1080_bind,
1548 .reset = net1080_reset,
1549 .check_connect = net1080_check_connect,
1550 .rx_fixup = net1080_rx_fixup,
1551 .tx_fixup = net1080_tx_fixup,
1552};
1553
1554#endif /* CONFIG_USB_NET1080 */
1555
1556
1557
1558#ifdef CONFIG_USB_PL2301 1028#ifdef CONFIG_USB_PL2301
1559#define HAVE_HARDWARE 1029#define HAVE_HARDWARE
1560 1030
@@ -2486,10 +1956,6 @@ static int usbnet_start_xmit (struct sk_buff *skb, struct net_device *net)
2486 struct skb_data *entry; 1956 struct skb_data *entry;
2487 struct driver_info *info = dev->driver_info; 1957 struct driver_info *info = dev->driver_info;
2488 unsigned long flags; 1958 unsigned long flags;
2489#ifdef CONFIG_USB_NET1080
2490 struct nc_header *header = NULL;
2491 struct nc_trailer *trailer = NULL;
2492#endif /* CONFIG_USB_NET1080 */
2493 1959
2494 // some devices want funky USB-level framing, for 1960 // some devices want funky USB-level framing, for
2495 // win32 driver (usually) and/or hardware quirks 1961 // win32 driver (usually) and/or hardware quirks
@@ -2515,21 +1981,6 @@ static int usbnet_start_xmit (struct sk_buff *skb, struct net_device *net)
2515 entry->state = tx_start; 1981 entry->state = tx_start;
2516 entry->length = length; 1982 entry->length = length;
2517 1983
2518 // FIXME: reorganize a bit, so that fixup() fills out NetChip
2519 // framing too. (Packet ID update needs the spinlock...)
2520 // [ BETTER: we already own net->xmit_lock, that's enough ]
2521
2522#ifdef CONFIG_USB_NET1080
2523 if (info->flags & FLAG_FRAMING_NC) {
2524 header = (struct nc_header *) skb_push (skb, sizeof *header);
2525 header->hdr_len = cpu_to_le16 (sizeof (*header));
2526 header->packet_len = cpu_to_le16 (length);
2527 if (!((skb->len + sizeof *trailer) & 0x01))
2528 *skb_put (skb, 1) = PAD_BYTE;
2529 trailer = (struct nc_trailer *) skb_put (skb, sizeof *trailer);
2530 }
2531#endif /* CONFIG_USB_NET1080 */
2532
2533 usb_fill_bulk_urb (urb, dev->udev, dev->out, 1984 usb_fill_bulk_urb (urb, dev->udev, dev->out,
2534 skb->data, skb->len, tx_complete, skb); 1985 skb->data, skb->len, tx_complete, skb);
2535 1986
@@ -2544,18 +1995,6 @@ static int usbnet_start_xmit (struct sk_buff *skb, struct net_device *net)
2544 1995
2545 spin_lock_irqsave (&dev->txq.lock, flags); 1996 spin_lock_irqsave (&dev->txq.lock, flags);
2546 1997
2547#ifdef CONFIG_USB_NET1080
2548 if (info->flags & FLAG_FRAMING_NC) {
2549 header->packet_id = cpu_to_le16 ((u16)dev->xid++);
2550 put_unaligned (header->packet_id, &trailer->packet_id);
2551#if 0
2552 devdbg (dev, "frame >tx h %d p %d id %d",
2553 header->hdr_len, header->packet_len,
2554 header->packet_id);
2555#endif
2556 }
2557#endif /* CONFIG_USB_NET1080 */
2558
2559 switch ((retval = usb_submit_urb (urb, GFP_ATOMIC))) { 1998 switch ((retval = usb_submit_urb (urb, GFP_ATOMIC))) {
2560 case -EPIPE: 1999 case -EPIPE:
2561 netif_stop_queue (net); 2000 netif_stop_queue (net);
@@ -2894,16 +2333,6 @@ static const struct usb_device_id products [] = {
2894 */ 2333 */
2895#endif 2334#endif
2896 2335
2897#ifdef CONFIG_USB_NET1080
2898{
2899 USB_DEVICE (0x0525, 0x1080), // NetChip ref design
2900 .driver_info = (unsigned long) &net1080_info,
2901}, {
2902 USB_DEVICE (0x06D0, 0x0622), // Laplink Gold
2903 .driver_info = (unsigned long) &net1080_info,
2904},
2905#endif
2906
2907#ifdef CONFIG_USB_PL2301 2336#ifdef CONFIG_USB_PL2301
2908{ 2337{
2909 USB_DEVICE (0x067b, 0x0000), // PL-2301 2338 USB_DEVICE (0x067b, 0x0000), // PL-2301
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-12 15:35:47 -0500