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Linux-2.6.12-rc2
[thirdparty/linux.git] / drivers / usb / net / usbnet.c
1 /*
2 * USB Networking Links
3 * Copyright (C) 2000-2003 by David Brownell <dbrownell@users.sourceforge.net>
4 * Copyright (C) 2002 Pavel Machek <pavel@ucw.cz>
5 * Copyright (C) 2003-2005 David Hollis <dhollis@davehollis.com>
6 * Copyright (C) 2005 Phil Chang <pchang23@sbcglobal.net>
7 * Copyright (c) 2002-2003 TiVo Inc.
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 */
23
24 /*
25 * This is a generic "USB networking" framework that works with several
26 * kinds of full and high speed networking devices:
27 *
28 * + USB host-to-host "network cables", used for IP-over-USB links.
29 * These are often used for Laplink style connectivity products.
30 * - AnchorChip 2720
31 * - Belkin, eTEK (interops with Win32 drivers)
32 * - GeneSys GL620USB-A
33 * - NetChip 1080 (interoperates with NetChip Win32 drivers)
34 * - Prolific PL-2301/2302 (replaces "plusb" driver)
35 * - KC Technology KC2190
36 *
37 * + Smart USB devices can support such links directly, using Internet
38 * standard protocols instead of proprietary host-to-device links.
39 * - Linux PDAs like iPaq, Yopy, and Zaurus
40 * - The BLOB boot loader (for diskless booting)
41 * - Linux "gadgets", perhaps using PXA-2xx or Net2280 controllers
42 * - Devices using EPSON's sample USB firmware
43 * - CDC-Ethernet class devices, such as many cable modems
44 *
45 * + Adapters to networks such as Ethernet.
46 * - AX8817X based USB 2.0 products
47 *
48 * Links to these devices can be bridged using Linux Ethernet bridging.
49 * With minor exceptions, these all use similar USB framing for network
50 * traffic, but need different protocols for control traffic.
51 *
52 * USB devices can implement their side of this protocol at the cost
53 * of two bulk endpoints; it's not restricted to "cable" applications.
54 * See the SA1110, Zaurus, or EPSON device/client support in this driver;
55 * slave/target drivers such as "usb-eth" (on most SA-1100 PDAs) or
56 * "g_ether" (in the Linux "gadget" framework) implement that behavior
57 * within devices.
58 *
59 *
60 * CHANGELOG:
61 *
62 * 13-sep-2000 experimental, new
63 * 10-oct-2000 usb_device_id table created.
64 * 28-oct-2000 misc fixes; mostly, discard more TTL-mangled rx packets.
65 * 01-nov-2000 usb_device_id table and probing api update by
66 * Adam J. Richter <adam@yggdrasil.com>.
67 * 18-dec-2000 (db) tx watchdog, "net1080" renaming to "usbnet", device_info
68 * and prolific support, isolate net1080-specific bits, cleanup.
69 * fix unlink_urbs oops in D3 PM resume code path.
70 *
71 * 02-feb-2001 (db) fix tx skb sharing, packet length, match_flags, ...
72 * 08-feb-2001 stubbed in "linuxdev", maybe the SA-1100 folk can use it;
73 * AnchorChips 2720 support (from spec) for testing;
74 * fix bit-ordering problem with ethernet multicast addr
75 * 19-feb-2001 Support for clearing halt conditions. SA1100 UDC support
76 * updates. Oleg Drokin (green@iXcelerator.com)
77 * 25-mar-2001 More SA-1100 updates, including workaround for ip problem
78 * expecting cleared skb->cb and framing change to match latest
79 * handhelds.org version (Oleg). Enable device IDs from the
80 * Win32 Belkin driver; other cleanups (db).
81 * 16-jul-2001 Bugfixes for uhci oops-on-unplug, Belkin support, various
82 * cleanups for problems not yet seen in the field. (db)
83 * 17-oct-2001 Handle "Advance USBNET" product, like Belkin/eTEK devices,
84 * from Ioannis Mavroukakis <i.mavroukakis@btinternet.com>;
85 * rx unlinks somehow weren't async; minor cleanup.
86 * 03-nov-2001 Merged GeneSys driver; original code from Jiun-Jie Huang
87 * <huangjj@genesyslogic.com.tw>, updated by Stanislav Brabec
88 * <utx@penguin.cz>. Made framing options (NetChip/GeneSys)
89 * tie mostly to (sub)driver info. Workaround some PL-2302
90 * chips that seem to reject SET_INTERFACE requests.
91 *
92 * 06-apr-2002 Added ethtool support, based on a patch from Brad Hards.
93 * Level of diagnostics is more configurable; they use device
94 * location (usb_device->devpath) instead of address (2.5).
95 * For tx_fixup, memflags can't be NOIO.
96 * 07-may-2002 Generalize/cleanup keventd support, handling rx stalls (mostly
97 * for USB 2.0 TTs) and memory shortages (potential) too. (db)
98 * Use "locally assigned" IEEE802 address space. (Brad Hards)
99 * 18-oct-2002 Support for Zaurus (Pavel Machek), related cleanup (db).
100 * 14-dec-2002 Remove Zaurus-private crc32 code (Pavel); 2.5 oops fix,
101 * cleanups and stubbed PXA-250 support (db), fix for framing
102 * issues on Z, net1080, and gl620a (Toby Milne)
103 *
104 * 31-mar-2003 Use endpoint descriptors: high speed support, simpler sa1100
105 * vs pxa25x, and CDC Ethernet. Throttle down log floods on
106 * disconnect; other cleanups. (db) Flush net1080 fifos
107 * after several sequential framing errors. (Johannes Erdfelt)
108 * 22-aug-2003 AX8817X support (Dave Hollis).
109 * 14-jun-2004 Trivial patch for AX8817X based Buffalo LUA-U2-KTX in Japan
110 * (Neil Bortnak)
111 * 03-nov-2004 Trivial patch for KC2190 (KC-190) chip. (Jonathan McDowell)
112 *
113 * 01-feb-2005 AX88772 support (Phil Chang & Dave Hollis)
114 *-------------------------------------------------------------------------*/
115
116 // #define DEBUG // error path messages, extra info
117 // #define VERBOSE // more; success messages
118
119 #include <linux/config.h>
120 #ifdef CONFIG_USB_DEBUG
121 # define DEBUG
122 #endif
123 #include <linux/module.h>
124 #include <linux/kmod.h>
125 #include <linux/sched.h>
126 #include <linux/init.h>
127 #include <linux/netdevice.h>
128 #include <linux/etherdevice.h>
129 #include <linux/random.h>
130 #include <linux/ethtool.h>
131 #include <linux/workqueue.h>
132 #include <linux/mii.h>
133 #include <asm/uaccess.h>
134 #include <asm/unaligned.h>
135 #include <linux/usb.h>
136 #include <asm/io.h>
137 #include <asm/scatterlist.h>
138 #include <linux/mm.h>
139 #include <linux/dma-mapping.h>
140
141 #define DRIVER_VERSION "03-Nov-2004"
142
143
144 /*-------------------------------------------------------------------------*/
145
146 /*
147 * Nineteen USB 1.1 max size bulk transactions per frame (ms), max.
148 * Several dozen bytes of IPv4 data can fit in two such transactions.
149 * One maximum size Ethernet packet takes twenty four of them.
150 * For high speed, each frame comfortably fits almost 36 max size
151 * Ethernet packets (so queues should be bigger).
152 */
153 #define RX_QLEN(dev) (((dev)->udev->speed == USB_SPEED_HIGH) ? 60 : 4)
154 #define TX_QLEN(dev) (((dev)->udev->speed == USB_SPEED_HIGH) ? 60 : 4)
155
156 // packets are always ethernet inside
157 // ... except they can be bigger (limit of 64K with NetChip framing)
158 #define MIN_PACKET sizeof(struct ethhdr)
159 #define MAX_PACKET 32768
160
161 // reawaken network queue this soon after stopping; else watchdog barks
162 #define TX_TIMEOUT_JIFFIES (5*HZ)
163
164 // throttle rx/tx briefly after some faults, so khubd might disconnect()
165 // us (it polls at HZ/4 usually) before we report too many false errors.
166 #define THROTTLE_JIFFIES (HZ/8)
167
168 // for vendor-specific control operations
169 #define CONTROL_TIMEOUT_MS 500
170
171 // between wakeups
172 #define UNLINK_TIMEOUT_MS 3
173
174 /*-------------------------------------------------------------------------*/
175
176 // randomly generated ethernet address
177 static u8 node_id [ETH_ALEN];
178
179 // state we keep for each device we handle
180 struct usbnet {
181 // housekeeping
182 struct usb_device *udev;
183 struct driver_info *driver_info;
184 wait_queue_head_t *wait;
185
186 // i/o info: pipes etc
187 unsigned in, out;
188 struct usb_host_endpoint *status;
189 unsigned maxpacket;
190 struct timer_list delay;
191
192 // protocol/interface state
193 struct net_device *net;
194 struct net_device_stats stats;
195 int msg_enable;
196 unsigned long data [5];
197
198 struct mii_if_info mii;
199
200 // various kinds of pending driver work
201 struct sk_buff_head rxq;
202 struct sk_buff_head txq;
203 struct sk_buff_head done;
204 struct urb *interrupt;
205 struct tasklet_struct bh;
206
207 struct work_struct kevent;
208 unsigned long flags;
209 # define EVENT_TX_HALT 0
210 # define EVENT_RX_HALT 1
211 # define EVENT_RX_MEMORY 2
212 # define EVENT_STS_SPLIT 3
213 };
214
215 // device-specific info used by the driver
216 struct driver_info {
217 char *description;
218
219 int flags;
220 /* framing is CDC Ethernet, not writing ZLPs (hw issues), or optionally: */
221 #define FLAG_FRAMING_NC 0x0001 /* guard against device dropouts */
222 #define FLAG_FRAMING_GL 0x0002 /* genelink batches packets */
223 #define FLAG_FRAMING_Z 0x0004 /* zaurus adds a trailer */
224 #define FLAG_FRAMING_RN 0x0008 /* RNDIS batches, plus huge header */
225
226 #define FLAG_NO_SETINT 0x0010 /* device can't set_interface() */
227 #define FLAG_ETHER 0x0020 /* maybe use "eth%d" names */
228
229 #define FLAG_FRAMING_AX 0x0040 /* AX88772/178 packets */
230
231 /* init device ... can sleep, or cause probe() failure */
232 int (*bind)(struct usbnet *, struct usb_interface *);
233
234 /* cleanup device ... can sleep, but can't fail */
235 void (*unbind)(struct usbnet *, struct usb_interface *);
236
237 /* reset device ... can sleep */
238 int (*reset)(struct usbnet *);
239
240 /* see if peer is connected ... can sleep */
241 int (*check_connect)(struct usbnet *);
242
243 /* for status polling */
244 void (*status)(struct usbnet *, struct urb *);
245
246 /* fixup rx packet (strip framing) */
247 int (*rx_fixup)(struct usbnet *dev, struct sk_buff *skb);
248
249 /* fixup tx packet (add framing) */
250 struct sk_buff *(*tx_fixup)(struct usbnet *dev,
251 struct sk_buff *skb, int flags);
252
253 // FIXME -- also an interrupt mechanism
254 // useful for at least PL2301/2302 and GL620USB-A
255 // and CDC use them to report 'is it connected' changes
256
257 /* for new devices, use the descriptor-reading code instead */
258 int in; /* rx endpoint */
259 int out; /* tx endpoint */
260
261 unsigned long data; /* Misc driver specific data */
262 };
263
264 // we record the state for each of our queued skbs
265 enum skb_state {
266 illegal = 0,
267 tx_start, tx_done,
268 rx_start, rx_done, rx_cleanup
269 };
270
271 struct skb_data { // skb->cb is one of these
272 struct urb *urb;
273 struct usbnet *dev;
274 enum skb_state state;
275 size_t length;
276 };
277
278 static const char driver_name [] = "usbnet";
279
280 /* use ethtool to change the level for any given device */
281 static int msg_level = -1;
282 module_param (msg_level, int, 0);
283 MODULE_PARM_DESC (msg_level, "Override default message level");
284
285
286 #ifdef DEBUG
287 #define devdbg(usbnet, fmt, arg...) \
288 printk(KERN_DEBUG "%s: " fmt "\n" , (usbnet)->net->name , ## arg)
289 #else
290 #define devdbg(usbnet, fmt, arg...) do {} while(0)
291 #endif
292
293 #define deverr(usbnet, fmt, arg...) \
294 printk(KERN_ERR "%s: " fmt "\n" , (usbnet)->net->name , ## arg)
295 #define devwarn(usbnet, fmt, arg...) \
296 printk(KERN_WARNING "%s: " fmt "\n" , (usbnet)->net->name , ## arg)
297
298 #define devinfo(usbnet, fmt, arg...) \
299 printk(KERN_INFO "%s: " fmt "\n" , (usbnet)->net->name , ## arg); \
300
301 /*-------------------------------------------------------------------------*/
302
303 static void usbnet_get_drvinfo (struct net_device *, struct ethtool_drvinfo *);
304 static u32 usbnet_get_link (struct net_device *);
305 static u32 usbnet_get_msglevel (struct net_device *);
306 static void usbnet_set_msglevel (struct net_device *, u32);
307
308 /* mostly for PDA style devices, which are always connected if present */
309 static int always_connected (struct usbnet *dev)
310 {
311 return 0;
312 }
313
314 /* handles CDC Ethernet and many other network "bulk data" interfaces */
315 static int
316 get_endpoints (struct usbnet *dev, struct usb_interface *intf)
317 {
318 int tmp;
319 struct usb_host_interface *alt = NULL;
320 struct usb_host_endpoint *in = NULL, *out = NULL;
321 struct usb_host_endpoint *status = NULL;
322
323 for (tmp = 0; tmp < intf->num_altsetting; tmp++) {
324 unsigned ep;
325
326 in = out = status = NULL;
327 alt = intf->altsetting + tmp;
328
329 /* take the first altsetting with in-bulk + out-bulk;
330 * remember any status endpoint, just in case;
331 * ignore other endpoints and altsetttings.
332 */
333 for (ep = 0; ep < alt->desc.bNumEndpoints; ep++) {
334 struct usb_host_endpoint *e;
335 int intr = 0;
336
337 e = alt->endpoint + ep;
338 switch (e->desc.bmAttributes) {
339 case USB_ENDPOINT_XFER_INT:
340 if (!(e->desc.bEndpointAddress & USB_DIR_IN))
341 continue;
342 intr = 1;
343 /* FALLTHROUGH */
344 case USB_ENDPOINT_XFER_BULK:
345 break;
346 default:
347 continue;
348 }
349 if (e->desc.bEndpointAddress & USB_DIR_IN) {
350 if (!intr && !in)
351 in = e;
352 else if (intr && !status)
353 status = e;
354 } else {
355 if (!out)
356 out = e;
357 }
358 }
359 if (in && out)
360 break;
361 }
362 if (!alt || !in || !out)
363 return -EINVAL;
364
365 if (alt->desc.bAlternateSetting != 0
366 || !(dev->driver_info->flags & FLAG_NO_SETINT)) {
367 tmp = usb_set_interface (dev->udev, alt->desc.bInterfaceNumber,
368 alt->desc.bAlternateSetting);
369 if (tmp < 0)
370 return tmp;
371 }
372
373 dev->in = usb_rcvbulkpipe (dev->udev,
374 in->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
375 dev->out = usb_sndbulkpipe (dev->udev,
376 out->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
377 dev->status = status;
378 return 0;
379 }
380
381 static void intr_complete (struct urb *urb, struct pt_regs *regs);
382
383 static int init_status (struct usbnet *dev, struct usb_interface *intf)
384 {
385 char *buf = NULL;
386 unsigned pipe = 0;
387 unsigned maxp;
388 unsigned period;
389
390 if (!dev->driver_info->status)
391 return 0;
392
393 pipe = usb_rcvintpipe (dev->udev,
394 dev->status->desc.bEndpointAddress
395 & USB_ENDPOINT_NUMBER_MASK);
396 maxp = usb_maxpacket (dev->udev, pipe, 0);
397
398 /* avoid 1 msec chatter: min 8 msec poll rate */
399 period = max ((int) dev->status->desc.bInterval,
400 (dev->udev->speed == USB_SPEED_HIGH) ? 7 : 3);
401
402 buf = kmalloc (maxp, SLAB_KERNEL);
403 if (buf) {
404 dev->interrupt = usb_alloc_urb (0, SLAB_KERNEL);
405 if (!dev->interrupt) {
406 kfree (buf);
407 return -ENOMEM;
408 } else {
409 usb_fill_int_urb(dev->interrupt, dev->udev, pipe,
410 buf, maxp, intr_complete, dev, period);
411 dev_dbg(&intf->dev,
412 "status ep%din, %d bytes period %d\n",
413 usb_pipeendpoint(pipe), maxp, period);
414 }
415 }
416 return 0;
417 }
418
419 static void skb_return (struct usbnet *dev, struct sk_buff *skb)
420 {
421 int status;
422
423 skb->dev = dev->net;
424 skb->protocol = eth_type_trans (skb, dev->net);
425 dev->stats.rx_packets++;
426 dev->stats.rx_bytes += skb->len;
427
428 if (netif_msg_rx_status (dev))
429 devdbg (dev, "< rx, len %d, type 0x%x",
430 skb->len + sizeof (struct ethhdr), skb->protocol);
431 memset (skb->cb, 0, sizeof (struct skb_data));
432 status = netif_rx (skb);
433 if (status != NET_RX_SUCCESS && netif_msg_rx_err (dev))
434 devdbg (dev, "netif_rx status %d", status);
435 }
436
437 \f
438 #ifdef CONFIG_USB_ALI_M5632
439 #define HAVE_HARDWARE
440
441 /*-------------------------------------------------------------------------
442 *
443 * ALi M5632 driver ... does high speed
444 *
445 *-------------------------------------------------------------------------*/
446
447 static const struct driver_info ali_m5632_info = {
448 .description = "ALi M5632",
449 };
450
451
452 #endif
453
454 \f
455 #ifdef CONFIG_USB_AN2720
456 #define HAVE_HARDWARE
457
458 /*-------------------------------------------------------------------------
459 *
460 * AnchorChips 2720 driver ... http://www.cypress.com
461 *
462 * This doesn't seem to have a way to detect whether the peer is
463 * connected, or need any reset handshaking. It's got pretty big
464 * internal buffers (handles most of a frame's worth of data).
465 * Chip data sheets don't describe any vendor control messages.
466 *
467 *-------------------------------------------------------------------------*/
468
469 static const struct driver_info an2720_info = {
470 .description = "AnchorChips/Cypress 2720",
471 // no reset available!
472 // no check_connect available!
473
474 .in = 2, .out = 2, // direction distinguishes these
475 };
476
477 #endif /* CONFIG_USB_AN2720 */
478
479 \f
480 #ifdef CONFIG_USB_AX8817X
481 /* ASIX AX8817X based USB 2.0 Ethernet Devices */
482
483 #define HAVE_HARDWARE
484 #define NEED_MII
485
486 #include <linux/crc32.h>
487
488 #define AX_CMD_SET_SW_MII 0x06
489 #define AX_CMD_READ_MII_REG 0x07
490 #define AX_CMD_WRITE_MII_REG 0x08
491 #define AX_CMD_SET_HW_MII 0x0a
492 #define AX_CMD_READ_EEPROM 0x0b
493 #define AX_CMD_WRITE_EEPROM 0x0c
494 #define AX_CMD_WRITE_ENABLE 0x0d
495 #define AX_CMD_WRITE_DISABLE 0x0e
496 #define AX_CMD_WRITE_RX_CTL 0x10
497 #define AX_CMD_READ_IPG012 0x11
498 #define AX_CMD_WRITE_IPG0 0x12
499 #define AX_CMD_WRITE_IPG1 0x13
500 #define AX_CMD_WRITE_IPG2 0x14
501 #define AX_CMD_WRITE_MULTI_FILTER 0x16
502 #define AX_CMD_READ_NODE_ID 0x17
503 #define AX_CMD_READ_PHY_ID 0x19
504 #define AX_CMD_WRITE_MEDIUM_MODE 0x1b
505 #define AX_CMD_READ_MONITOR_MODE 0x1c
506 #define AX_CMD_WRITE_MONITOR_MODE 0x1d
507 #define AX_CMD_WRITE_GPIOS 0x1f
508 #define AX_CMD_SW_RESET 0x20
509 #define AX_CMD_SW_PHY_STATUS 0x21
510 #define AX_CMD_SW_PHY_SELECT 0x22
511 #define AX88772_CMD_READ_NODE_ID 0x13
512
513 #define AX_MONITOR_MODE 0x01
514 #define AX_MONITOR_LINK 0x02
515 #define AX_MONITOR_MAGIC 0x04
516 #define AX_MONITOR_HSFS 0x10
517
518 #define AX_MCAST_FILTER_SIZE 8
519 #define AX_MAX_MCAST 64
520
521 #define AX_INTERRUPT_BUFSIZE 8
522
523 #define AX_EEPROM_LEN 0x40
524
525 #define AX_SWRESET_CLEAR 0x00
526 #define AX_SWRESET_RR 0x01
527 #define AX_SWRESET_RT 0x02
528 #define AX_SWRESET_PRTE 0x04
529 #define AX_SWRESET_PRL 0x08
530 #define AX_SWRESET_BZ 0x10
531 #define AX_SWRESET_IPRL 0x20
532 #define AX_SWRESET_IPPD 0x40
533
534 #define AX88772_IPG0_DEFAULT 0x15
535 #define AX88772_IPG1_DEFAULT 0x0c
536 #define AX88772_IPG2_DEFAULT 0x12
537
538 #define AX_EEPROM_MAGIC 0xdeadbeef
539
540 /* This structure cannot exceed sizeof(unsigned long [5]) AKA 20 bytes */
541 struct ax8817x_data {
542 u8 multi_filter[AX_MCAST_FILTER_SIZE];
543 struct urb *int_urb;
544 u8 *int_buf;
545 };
546
547 static int ax8817x_read_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
548 u16 size, void *data)
549 {
550 return usb_control_msg(
551 dev->udev,
552 usb_rcvctrlpipe(dev->udev, 0),
553 cmd,
554 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
555 value,
556 index,
557 data,
558 size,
559 CONTROL_TIMEOUT_MS);
560 }
561
562 static int ax8817x_write_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
563 u16 size, void *data)
564 {
565 return usb_control_msg(
566 dev->udev,
567 usb_sndctrlpipe(dev->udev, 0),
568 cmd,
569 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
570 value,
571 index,
572 data,
573 size,
574 CONTROL_TIMEOUT_MS);
575 }
576
577 static void ax8817x_async_cmd_callback(struct urb *urb, struct pt_regs *regs)
578 {
579 struct usb_ctrlrequest *req = (struct usb_ctrlrequest *)urb->context;
580
581 if (urb->status < 0)
582 printk(KERN_DEBUG "ax8817x_async_cmd_callback() failed with %d",
583 urb->status);
584
585 kfree(req);
586 usb_free_urb(urb);
587 }
588
589 static void ax8817x_interrupt_complete(struct urb *urb, struct pt_regs *regs)
590 {
591 struct usbnet *dev = (struct usbnet *)urb->context;
592 struct ax8817x_data *data = (struct ax8817x_data *)&dev->data;
593 int link;
594
595 if (urb->status < 0) {
596 devdbg(dev,"ax8817x_interrupt_complete() failed with %d",
597 urb->status);
598 } else {
599 link = data->int_buf[2] & 0x01;
600 if (netif_carrier_ok(dev->net) != link) {
601 if (link)
602 netif_carrier_on(dev->net);
603 else
604 netif_carrier_off(dev->net);
605 devdbg(dev, "ax8817x - Link Status is: %d", link);
606 }
607 usb_submit_urb(data->int_urb, GFP_ATOMIC);
608 }
609 }
610
611 static void ax8817x_write_cmd_async(struct usbnet *dev, u8 cmd, u16 value, u16 index,
612 u16 size, void *data)
613 {
614 struct usb_ctrlrequest *req;
615 int status;
616 struct urb *urb;
617
618 if ((urb = usb_alloc_urb(0, GFP_ATOMIC)) == NULL) {
619 devdbg(dev, "Error allocating URB in write_cmd_async!");
620 return;
621 }
622
623 if ((req = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC)) == NULL) {
624 deverr(dev, "Failed to allocate memory for control request");
625 usb_free_urb(urb);
626 return;
627 }
628
629 req->bRequestType = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE;
630 req->bRequest = cmd;
631 req->wValue = cpu_to_le16(value);
632 req->wIndex = cpu_to_le16(index);
633 req->wLength = cpu_to_le16(size);
634
635 usb_fill_control_urb(urb, dev->udev,
636 usb_sndctrlpipe(dev->udev, 0),
637 (void *)req, data, size,
638 ax8817x_async_cmd_callback, req);
639
640 if((status = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
641 deverr(dev, "Error submitting the control message: status=%d", status);
642 kfree(req);
643 usb_free_urb(urb);
644 }
645 }
646
647 static void ax8817x_set_multicast(struct net_device *net)
648 {
649 struct usbnet *dev = netdev_priv(net);
650 struct ax8817x_data *data = (struct ax8817x_data *)&dev->data;
651 u8 rx_ctl = 0x8c;
652
653 if (net->flags & IFF_PROMISC) {
654 rx_ctl |= 0x01;
655 } else if (net->flags & IFF_ALLMULTI
656 || net->mc_count > AX_MAX_MCAST) {
657 rx_ctl |= 0x02;
658 } else if (net->mc_count == 0) {
659 /* just broadcast and directed */
660 } else {
661 /* We use the 20 byte dev->data
662 * for our 8 byte filter buffer
663 * to avoid allocating memory that
664 * is tricky to free later */
665 struct dev_mc_list *mc_list = net->mc_list;
666 u32 crc_bits;
667 int i;
668
669 memset(data->multi_filter, 0, AX_MCAST_FILTER_SIZE);
670
671 /* Build the multicast hash filter. */
672 for (i = 0; i < net->mc_count; i++) {
673 crc_bits =
674 ether_crc(ETH_ALEN,
675 mc_list->dmi_addr) >> 26;
676 data->multi_filter[crc_bits >> 3] |=
677 1 << (crc_bits & 7);
678 mc_list = mc_list->next;
679 }
680
681 ax8817x_write_cmd_async(dev, AX_CMD_WRITE_MULTI_FILTER, 0, 0,
682 AX_MCAST_FILTER_SIZE, data->multi_filter);
683
684 rx_ctl |= 0x10;
685 }
686
687 ax8817x_write_cmd_async(dev, AX_CMD_WRITE_RX_CTL, rx_ctl, 0, 0, NULL);
688 }
689
690 static int ax8817x_mdio_read(struct net_device *netdev, int phy_id, int loc)
691 {
692 struct usbnet *dev = netdev_priv(netdev);
693 u16 res;
694 u8 buf[1];
695
696 ax8817x_write_cmd(dev, AX_CMD_SET_SW_MII, 0, 0, 0, &buf);
697 ax8817x_read_cmd(dev, AX_CMD_READ_MII_REG, phy_id, (__u16)loc, 2, (u16 *)&res);
698 ax8817x_write_cmd(dev, AX_CMD_SET_HW_MII, 0, 0, 0, &buf);
699
700 return res & 0xffff;
701 }
702
703 static void ax8817x_mdio_write(struct net_device *netdev, int phy_id, int loc, int val)
704 {
705 struct usbnet *dev = netdev_priv(netdev);
706 u16 res = val;
707 u8 buf[1];
708
709 ax8817x_write_cmd(dev, AX_CMD_SET_SW_MII, 0, 0, 0, &buf);
710 ax8817x_write_cmd(dev, AX_CMD_WRITE_MII_REG, phy_id, (__u16)loc, 2, (u16 *)&res);
711 ax8817x_write_cmd(dev, AX_CMD_SET_HW_MII, 0, 0, 0, &buf);
712 }
713
714 static void ax8817x_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
715 {
716 struct usbnet *dev = netdev_priv(net);
717 u8 opt;
718
719 if (ax8817x_read_cmd(dev, AX_CMD_READ_MONITOR_MODE, 0, 0, 1, &opt) < 0) {
720 wolinfo->supported = 0;
721 wolinfo->wolopts = 0;
722 return;
723 }
724 wolinfo->supported = WAKE_PHY | WAKE_MAGIC;
725 wolinfo->wolopts = 0;
726 if (opt & AX_MONITOR_MODE) {
727 if (opt & AX_MONITOR_LINK)
728 wolinfo->wolopts |= WAKE_PHY;
729 if (opt & AX_MONITOR_MAGIC)
730 wolinfo->wolopts |= WAKE_MAGIC;
731 }
732 }
733
734 static int ax8817x_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
735 {
736 struct usbnet *dev = netdev_priv(net);
737 u8 opt = 0;
738 u8 buf[1];
739
740 if (wolinfo->wolopts & WAKE_PHY)
741 opt |= AX_MONITOR_LINK;
742 if (wolinfo->wolopts & WAKE_MAGIC)
743 opt |= AX_MONITOR_MAGIC;
744 if (opt != 0)
745 opt |= AX_MONITOR_MODE;
746
747 if (ax8817x_write_cmd(dev, AX_CMD_WRITE_MONITOR_MODE,
748 opt, 0, 0, &buf) < 0)
749 return -EINVAL;
750
751 return 0;
752 }
753
754 static int ax8817x_get_eeprom_len(struct net_device *net)
755 {
756 return AX_EEPROM_LEN;
757 }
758
759 static int ax8817x_get_eeprom(struct net_device *net,
760 struct ethtool_eeprom *eeprom, u8 *data)
761 {
762 struct usbnet *dev = netdev_priv(net);
763 u16 *ebuf = (u16 *)data;
764 int i;
765
766 /* Crude hack to ensure that we don't overwrite memory
767 * if an odd length is supplied
768 */
769 if (eeprom->len % 2)
770 return -EINVAL;
771
772 eeprom->magic = AX_EEPROM_MAGIC;
773
774 /* ax8817x returns 2 bytes from eeprom on read */
775 for (i=0; i < eeprom->len / 2; i++) {
776 if (ax8817x_read_cmd(dev, AX_CMD_READ_EEPROM,
777 eeprom->offset + i, 0, 2, &ebuf[i]) < 0)
778 return -EINVAL;
779 }
780 return 0;
781 }
782
783 static void ax8817x_get_drvinfo (struct net_device *net,
784 struct ethtool_drvinfo *info)
785 {
786 /* Inherit standard device info */
787 usbnet_get_drvinfo(net, info);
788 info->eedump_len = 0x3e;
789 }
790
791 static int ax8817x_get_settings(struct net_device *net, struct ethtool_cmd *cmd)
792 {
793 struct usbnet *dev = netdev_priv(net);
794
795 return mii_ethtool_gset(&dev->mii,cmd);
796 }
797
798 static int ax8817x_set_settings(struct net_device *net, struct ethtool_cmd *cmd)
799 {
800 struct usbnet *dev = netdev_priv(net);
801
802 return mii_ethtool_sset(&dev->mii,cmd);
803 }
804
805 /* We need to override some ethtool_ops so we require our
806 own structure so we don't interfere with other usbnet
807 devices that may be connected at the same time. */
808 static struct ethtool_ops ax8817x_ethtool_ops = {
809 .get_drvinfo = ax8817x_get_drvinfo,
810 .get_link = ethtool_op_get_link,
811 .get_msglevel = usbnet_get_msglevel,
812 .set_msglevel = usbnet_set_msglevel,
813 .get_wol = ax8817x_get_wol,
814 .set_wol = ax8817x_set_wol,
815 .get_eeprom_len = ax8817x_get_eeprom_len,
816 .get_eeprom = ax8817x_get_eeprom,
817 .get_settings = ax8817x_get_settings,
818 .set_settings = ax8817x_set_settings,
819 };
820
821 static int ax8817x_bind(struct usbnet *dev, struct usb_interface *intf)
822 {
823 int ret = 0;
824 void *buf;
825 int i;
826 unsigned long gpio_bits = dev->driver_info->data;
827 struct ax8817x_data *data = (struct ax8817x_data *)dev->data;
828
829 get_endpoints(dev,intf);
830
831 if ((data->int_urb = usb_alloc_urb (0, GFP_KERNEL)) == NULL) {
832 dbg ("%s: cannot allocate interrupt URB",
833 dev->net->name);
834 ret = -ENOMEM;
835 goto out1;
836 }
837
838 if ((data->int_buf = kmalloc(AX_INTERRUPT_BUFSIZE, GFP_KERNEL)) == NULL) {
839 dbg ("%s: cannot allocate memory for interrupt buffer",
840 dev->net->name);
841 ret = -ENOMEM;
842 goto out1;
843 }
844 memset(data->int_buf, 0, AX_INTERRUPT_BUFSIZE);
845
846 usb_fill_int_urb (data->int_urb, dev->udev,
847 usb_rcvintpipe (dev->udev, 1),
848 data->int_buf, AX_INTERRUPT_BUFSIZE,
849 ax8817x_interrupt_complete, dev,
850 dev->udev->speed == USB_SPEED_HIGH ? 8 : 100);
851
852 buf = kmalloc(ETH_ALEN, GFP_KERNEL);
853 if(!buf) {
854 ret = -ENOMEM;
855 goto out2;
856 }
857
858 /* Toggle the GPIOs in a manufacturer/model specific way */
859 for (i = 2; i >= 0; i--) {
860 if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_GPIOS,
861 (gpio_bits >> (i * 8)) & 0xff, 0, 0,
862 buf)) < 0)
863 goto out3;
864 msleep(5);
865 }
866
867 if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_RX_CTL, 0x80, 0, 0, buf)) < 0) {
868 dbg("send AX_CMD_WRITE_RX_CTL failed: %d", ret);
869 goto out3;
870 }
871
872 /* Get the MAC address */
873 memset(buf, 0, ETH_ALEN);
874 if ((ret = ax8817x_read_cmd(dev, AX_CMD_READ_NODE_ID, 0, 0, 6, buf)) < 0) {
875 dbg("read AX_CMD_READ_NODE_ID failed: %d", ret);
876 goto out3;
877 }
878 memcpy(dev->net->dev_addr, buf, ETH_ALEN);
879
880 /* Get the PHY id */
881 if ((ret = ax8817x_read_cmd(dev, AX_CMD_READ_PHY_ID, 0, 0, 2, buf)) < 0) {
882 dbg("error on read AX_CMD_READ_PHY_ID: %02x", ret);
883 goto out3;
884 } else if (ret < 2) {
885 /* this should always return 2 bytes */
886 dbg("AX_CMD_READ_PHY_ID returned less than 2 bytes: ret=%02x", ret);
887 ret = -EIO;
888 goto out3;
889 }
890
891 /* Initialize MII structure */
892 dev->mii.dev = dev->net;
893 dev->mii.mdio_read = ax8817x_mdio_read;
894 dev->mii.mdio_write = ax8817x_mdio_write;
895 dev->mii.phy_id_mask = 0x3f;
896 dev->mii.reg_num_mask = 0x1f;
897 dev->mii.phy_id = *((u8 *)buf + 1);
898
899 dev->net->set_multicast_list = ax8817x_set_multicast;
900 dev->net->ethtool_ops = &ax8817x_ethtool_ops;
901
902 ax8817x_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR,
903 cpu_to_le16(BMCR_RESET));
904 ax8817x_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
905 cpu_to_le16(ADVERTISE_ALL | ADVERTISE_CSMA | 0x0400));
906 mii_nway_restart(&dev->mii);
907
908 if((ret = usb_submit_urb(data->int_urb, GFP_KERNEL)) < 0) {
909 dbg("Failed to submit interrupt URB: %02x", ret);
910 goto out2;
911 }
912
913 return 0;
914 out3:
915 kfree(buf);
916 out2:
917 kfree(data->int_buf);
918 out1:
919 usb_free_urb(data->int_urb);
920 return ret;
921 }
922
923 static void ax8817x_unbind(struct usbnet *dev, struct usb_interface *intf)
924 {
925 struct ax8817x_data *data = (struct ax8817x_data *)dev->data;
926
927 usb_kill_urb(data->int_urb);
928 usb_free_urb(data->int_urb);
929 kfree(data->int_buf);
930 }
931
932 static struct ethtool_ops ax88772_ethtool_ops = {
933 .get_drvinfo = ax8817x_get_drvinfo,
934 .get_link = ethtool_op_get_link,
935 .get_msglevel = usbnet_get_msglevel,
936 .set_msglevel = usbnet_set_msglevel,
937 .get_wol = ax8817x_get_wol,
938 .set_wol = ax8817x_set_wol,
939 .get_eeprom_len = ax8817x_get_eeprom_len,
940 .get_eeprom = ax8817x_get_eeprom,
941 .get_settings = ax8817x_get_settings,
942 .set_settings = ax8817x_set_settings,
943 };
944
945 static int ax88772_bind(struct usbnet *dev, struct usb_interface *intf)
946 {
947 int ret;
948 void *buf;
949 struct ax8817x_data *data = (struct ax8817x_data *)dev->data;
950
951 get_endpoints(dev,intf);
952
953 if ((data->int_urb = usb_alloc_urb (0, GFP_KERNEL)) == 0) {
954 dbg ("Cannot allocate interrupt URB");
955 ret = -ENOMEM;
956 goto out1;
957 }
958
959 if ((data->int_buf = kmalloc(AX_INTERRUPT_BUFSIZE, GFP_KERNEL)) == NULL) {
960 dbg ("Cannot allocate memory for interrupt buffer");
961 ret = -ENOMEM;
962 goto out1;
963 }
964 memset(data->int_buf, 0, AX_INTERRUPT_BUFSIZE);
965
966 usb_fill_int_urb (data->int_urb, dev->udev,
967 usb_rcvintpipe (dev->udev, 1),
968 data->int_buf, AX_INTERRUPT_BUFSIZE,
969 ax8817x_interrupt_complete, dev,
970 dev->udev->speed == USB_SPEED_HIGH ? 8 : 100);
971
972 buf = kmalloc(6, GFP_KERNEL);
973 if(!buf) {
974 dbg ("Cannot allocate memory for buffer");
975 ret = -ENOMEM;
976 goto out2;
977 }
978
979 if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_GPIOS,
980 0x00B0, 0, 0, buf)) < 0)
981 goto out3;
982
983 msleep(5);
984 if ((ret = ax8817x_write_cmd(dev, AX_CMD_SW_PHY_SELECT, 0x0001, 0, 0, buf)) < 0) {
985 dbg("Select PHY #1 failed: %d", ret);
986 goto out3;
987 }
988
989 if ((ret =
990 ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_IPPD, 0, 0, buf)) < 0) {
991 dbg("Failed to power down internal PHY: %d", ret);
992 goto out3;
993 }
994
995 msleep(150);
996 if ((ret =
997 ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_CLEAR, 0, 0, buf)) < 0) {
998 dbg("Failed to perform software reset: %d", ret);
999 goto out3;
1000 }
1001
1002 msleep(150);
1003 if ((ret =
1004 ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_IPRL | AX_SWRESET_PRL, 0, 0, buf)) < 0) {
1005 dbg("Failed to set Internal/External PHY reset control: %d", ret);
1006 goto out3;
1007 }
1008
1009 msleep(150);
1010 if ((ret =
1011 ax8817x_write_cmd(dev, AX_CMD_WRITE_RX_CTL, 0x0000, 0, 0,
1012 buf)) < 0) {
1013 dbg("Failed to reset RX_CTL: %d", ret);
1014 goto out3;
1015 }
1016
1017 /* Get the MAC address */
1018 memset(buf, 0, ETH_ALEN);
1019 if ((ret = ax8817x_read_cmd(dev, AX88772_CMD_READ_NODE_ID, 0, 0, ETH_ALEN, buf)) < 0) {
1020 dbg("Failed to read MAC address: %d", ret);
1021 goto out3;
1022 }
1023 memcpy(dev->net->dev_addr, buf, ETH_ALEN);
1024
1025 if ((ret = ax8817x_write_cmd(dev, AX_CMD_SET_SW_MII, 0, 0, 0, buf)) < 0) {
1026 dbg("Enabling software MII failed: %d", ret);
1027 goto out3;
1028 }
1029
1030 if (((ret =
1031 ax8817x_read_cmd(dev, AX_CMD_READ_MII_REG, 0x0010, 2, 2, buf)) < 0)
1032 || (*((u16 *)buf) != 0x003b)) {
1033 dbg("Read PHY register 2 must be 0x3b00: %d", ret);
1034 goto out3;
1035 }
1036
1037 /* Initialize MII structure */
1038 dev->mii.dev = dev->net;
1039 dev->mii.mdio_read = ax8817x_mdio_read;
1040 dev->mii.mdio_write = ax8817x_mdio_write;
1041 dev->mii.phy_id_mask = 0xff;
1042 dev->mii.reg_num_mask = 0xff;
1043
1044 /* Get the PHY id */
1045 if ((ret = ax8817x_read_cmd(dev, AX_CMD_READ_PHY_ID, 0, 0, 2, buf)) < 0) {
1046 dbg("Error reading PHY ID: %02x", ret);
1047 goto out3;
1048 } else if (ret < 2) {
1049 /* this should always return 2 bytes */
1050 dbg("AX_CMD_READ_PHY_ID returned less than 2 bytes: ret=%02x",
1051 ret);
1052 ret = -EIO;
1053 goto out3;
1054 }
1055 dev->mii.phy_id = *((u8 *)buf + 1);
1056
1057 if ((ret =
1058 ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_PRL, 0, 0, buf)) < 0) {
1059 dbg("Set external PHY reset pin level: %d", ret);
1060 goto out3;
1061 }
1062 msleep(150);
1063 if ((ret =
1064 ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_IPRL | AX_SWRESET_PRL, 0, 0, buf)) < 0) {
1065 dbg("Set Internal/External PHY reset control: %d", ret);
1066 goto out3;
1067 }
1068 msleep(150);
1069
1070
1071 dev->net->set_multicast_list = ax8817x_set_multicast;
1072 dev->net->ethtool_ops = &ax88772_ethtool_ops;
1073
1074 ax8817x_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR,
1075 cpu_to_le16(BMCR_RESET));
1076 ax8817x_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
1077 cpu_to_le16(ADVERTISE_ALL | ADVERTISE_CSMA));
1078 mii_nway_restart(&dev->mii);
1079
1080 if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE, 0x0336, 0, 0, buf)) < 0) {
1081 dbg("Write medium mode register: %d", ret);
1082 goto out3;
1083 }
1084
1085 if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_IPG0, AX88772_IPG0_DEFAULT | AX88772_IPG1_DEFAULT,AX88772_IPG2_DEFAULT, 0, buf)) < 0) {
1086 dbg("Write IPG,IPG1,IPG2 failed: %d", ret);
1087 goto out3;
1088 }
1089 if ((ret =
1090 ax8817x_write_cmd(dev, AX_CMD_SET_HW_MII, 0, 0, 0, &buf)) < 0) {
1091 dbg("Failed to set hardware MII: %02x", ret);
1092 goto out3;
1093 }
1094
1095 /* Set RX_CTL to default values with 2k buffer, and enable cactus */
1096 if ((ret =
1097 ax8817x_write_cmd(dev, AX_CMD_WRITE_RX_CTL, 0x0088, 0, 0,
1098 buf)) < 0) {
1099 dbg("Reset RX_CTL failed: %d", ret);
1100 goto out3;
1101 }
1102
1103 if((ret = usb_submit_urb(data->int_urb, GFP_KERNEL)) < 0) {
1104 dbg("Failed to submit interrupt URB: %02x", ret);
1105 goto out3;
1106 }
1107
1108 kfree(buf);
1109
1110 return 0;
1111
1112 out3:
1113 kfree(buf);
1114 out2:
1115 kfree(data->int_buf);
1116 out1:
1117 usb_free_urb(data->int_urb);
1118
1119 return ret;
1120 }
1121
1122 static int ax88772_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
1123 {
1124 u32 *header;
1125 char *packet;
1126 struct sk_buff *ax_skb;
1127 u16 size;
1128
1129 header = (u32 *) skb->data;
1130 le32_to_cpus(header);
1131 packet = (char *)(header + 1);
1132
1133 skb_pull(skb, 4);
1134
1135 while (skb->len > 0) {
1136 if ((short)(*header & 0x0000ffff) !=
1137 ~((short)((*header & 0xffff0000) >> 16))) {
1138 devdbg(dev,"header length data is error");
1139 }
1140 /* get the packet length */
1141 size = (u16) (*header & 0x0000ffff);
1142
1143 if ((skb->len) - ((size + 1) & 0xfffe) == 0)
1144 return 2;
1145 if (size > ETH_FRAME_LEN) {
1146 devdbg(dev,"invalid rx length %d", size);
1147 return 0;
1148 }
1149 ax_skb = skb_clone(skb, GFP_ATOMIC);
1150 if (ax_skb) {
1151 ax_skb->len = size;
1152 ax_skb->data = packet;
1153 ax_skb->tail = packet + size;
1154 skb_return(dev, ax_skb);
1155 } else {
1156 return 0;
1157 }
1158
1159 skb_pull(skb, (size + 1) & 0xfffe);
1160
1161 if (skb->len == 0)
1162 break;
1163
1164 header = (u32 *) skb->data;
1165 le32_to_cpus(header);
1166 packet = (char *)(header + 1);
1167 skb_pull(skb, 4);
1168 }
1169
1170 if (skb->len < 0) {
1171 devdbg(dev,"invalid rx length %d", skb->len);
1172 return 0;
1173 }
1174 return 1;
1175 }
1176
1177 static struct sk_buff *ax88772_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
1178 int flags)
1179 {
1180 int padlen;
1181 int headroom = skb_headroom(skb);
1182 int tailroom = skb_tailroom(skb);
1183 u32 *packet_len;
1184 u32 *padbytes_ptr;
1185
1186 padlen = ((skb->len + 4) % 512) ? 0 : 4;
1187
1188 if ((!skb_cloned(skb))
1189 && ((headroom + tailroom) >= (4 + padlen))) {
1190 if ((headroom < 4) || (tailroom < padlen)) {
1191 skb->data = memmove(skb->head + 4, skb->data, skb->len);
1192 skb->tail = skb->data + skb->len;
1193 }
1194 } else {
1195 struct sk_buff *skb2;
1196 skb2 = skb_copy_expand(skb, 4, padlen, flags);
1197 dev_kfree_skb_any(skb);
1198 skb = skb2;
1199 if (!skb)
1200 return NULL;
1201 }
1202
1203 packet_len = (u32 *) skb_push(skb, 4);
1204
1205 packet_len = (u32 *) skb->data;
1206 *packet_len = (((skb->len - 4) ^ 0x0000ffff) << 16) + (skb->len - 4);
1207
1208 if ((skb->len % 512) == 0) {
1209 padbytes_ptr = (u32 *) skb->tail;
1210 *padbytes_ptr = 0xffff0000;
1211 skb_put(skb, padlen);
1212 }
1213 return skb;
1214 }
1215
1216 static const struct driver_info ax8817x_info = {
1217 .description = "ASIX AX8817x USB 2.0 Ethernet",
1218 .bind = ax8817x_bind,
1219 .unbind = ax8817x_unbind,
1220 .flags = FLAG_ETHER,
1221 .data = 0x00130103,
1222 };
1223
1224 static const struct driver_info dlink_dub_e100_info = {
1225 .description = "DLink DUB-E100 USB Ethernet",
1226 .bind = ax8817x_bind,
1227 .unbind = ax8817x_unbind,
1228 .flags = FLAG_ETHER,
1229 .data = 0x009f9d9f,
1230 };
1231
1232 static const struct driver_info netgear_fa120_info = {
1233 .description = "Netgear FA-120 USB Ethernet",
1234 .bind = ax8817x_bind,
1235 .unbind = ax8817x_unbind,
1236 .flags = FLAG_ETHER,
1237 .data = 0x00130103,
1238 };
1239
1240 static const struct driver_info hawking_uf200_info = {
1241 .description = "Hawking UF200 USB Ethernet",
1242 .bind = ax8817x_bind,
1243 .unbind = ax8817x_unbind,
1244 .flags = FLAG_ETHER,
1245 .data = 0x001f1d1f,
1246 };
1247
1248 static const struct driver_info ax88772_info = {
1249 .description = "ASIX AX88772 USB 2.0 Ethernet",
1250 .bind = ax88772_bind,
1251 .unbind = ax8817x_unbind,
1252 .flags = FLAG_ETHER | FLAG_FRAMING_AX,
1253 .rx_fixup = ax88772_rx_fixup,
1254 .tx_fixup = ax88772_tx_fixup,
1255 .data = 0x00130103,
1256 };
1257
1258 #endif /* CONFIG_USB_AX8817X */
1259
1260
1261 \f
1262 #ifdef CONFIG_USB_BELKIN
1263 #define HAVE_HARDWARE
1264
1265 /*-------------------------------------------------------------------------
1266 *
1267 * Belkin F5U104 ... two NetChip 2280 devices + Atmel microcontroller
1268 *
1269 * ... also two eTEK designs, including one sold as "Advance USBNET"
1270 *
1271 *-------------------------------------------------------------------------*/
1272
1273 static const struct driver_info belkin_info = {
1274 .description = "Belkin, eTEK, or compatible",
1275 };
1276
1277 #endif /* CONFIG_USB_BELKIN */
1278
1279
1280 \f
1281 /*-------------------------------------------------------------------------
1282 *
1283 * Communications Device Class declarations.
1284 * Used by CDC Ethernet, and some CDC variants
1285 *
1286 *-------------------------------------------------------------------------*/
1287
1288 #ifdef CONFIG_USB_CDCETHER
1289 #define NEED_GENERIC_CDC
1290 #endif
1291
1292 #ifdef CONFIG_USB_ZAURUS
1293 /* Ethernet variant uses funky framing, broken ethernet addressing */
1294 #define NEED_GENERIC_CDC
1295 #endif
1296
1297 #ifdef CONFIG_USB_RNDIS
1298 /* ACM variant uses even funkier framing, complex control RPC scheme */
1299 #define NEED_GENERIC_CDC
1300 #endif
1301
1302
1303 #ifdef NEED_GENERIC_CDC
1304
1305 #include <linux/usb_cdc.h>
1306
1307 struct cdc_state {
1308 struct usb_cdc_header_desc *header;
1309 struct usb_cdc_union_desc *u;
1310 struct usb_cdc_ether_desc *ether;
1311 struct usb_interface *control;
1312 struct usb_interface *data;
1313 };
1314
1315 static struct usb_driver usbnet_driver;
1316
1317 /*
1318 * probes control interface, claims data interface, collects the bulk
1319 * endpoints, activates data interface (if needed), maybe sets MTU.
1320 * all pure cdc, except for certain firmware workarounds.
1321 */
1322 static int generic_cdc_bind (struct usbnet *dev, struct usb_interface *intf)
1323 {
1324 u8 *buf = intf->cur_altsetting->extra;
1325 int len = intf->cur_altsetting->extralen;
1326 struct usb_interface_descriptor *d;
1327 struct cdc_state *info = (void *) &dev->data;
1328 int status;
1329 int rndis;
1330
1331 if (sizeof dev->data < sizeof *info)
1332 return -EDOM;
1333
1334 /* expect strict spec conformance for the descriptors, but
1335 * cope with firmware which stores them in the wrong place
1336 */
1337 if (len == 0 && dev->udev->actconfig->extralen) {
1338 /* Motorola SB4100 (and others: Brad Hards says it's
1339 * from a Broadcom design) put CDC descriptors here
1340 */
1341 buf = dev->udev->actconfig->extra;
1342 len = dev->udev->actconfig->extralen;
1343 if (len)
1344 dev_dbg (&intf->dev,
1345 "CDC descriptors on config\n");
1346 }
1347
1348 /* this assumes that if there's a non-RNDIS vendor variant
1349 * of cdc-acm, it'll fail RNDIS requests cleanly.
1350 */
1351 rndis = (intf->cur_altsetting->desc.bInterfaceProtocol == 0xff);
1352
1353 memset (info, 0, sizeof *info);
1354 info->control = intf;
1355 while (len > 3) {
1356 if (buf [1] != USB_DT_CS_INTERFACE)
1357 goto next_desc;
1358
1359 /* use bDescriptorSubType to identify the CDC descriptors.
1360 * We expect devices with CDC header and union descriptors.
1361 * For CDC Ethernet we need the ethernet descriptor.
1362 * For RNDIS, ignore two (pointless) CDC modem descriptors
1363 * in favor of a complicated OID-based RPC scheme doing what
1364 * CDC Ethernet achieves with a simple descriptor.
1365 */
1366 switch (buf [2]) {
1367 case USB_CDC_HEADER_TYPE:
1368 if (info->header) {
1369 dev_dbg (&intf->dev, "extra CDC header\n");
1370 goto bad_desc;
1371 }
1372 info->header = (void *) buf;
1373 if (info->header->bLength != sizeof *info->header) {
1374 dev_dbg (&intf->dev, "CDC header len %u\n",
1375 info->header->bLength);
1376 goto bad_desc;
1377 }
1378 break;
1379 case USB_CDC_UNION_TYPE:
1380 if (info->u) {
1381 dev_dbg (&intf->dev, "extra CDC union\n");
1382 goto bad_desc;
1383 }
1384 info->u = (void *) buf;
1385 if (info->u->bLength != sizeof *info->u) {
1386 dev_dbg (&intf->dev, "CDC union len %u\n",
1387 info->u->bLength);
1388 goto bad_desc;
1389 }
1390
1391 /* we need a master/control interface (what we're
1392 * probed with) and a slave/data interface; union
1393 * descriptors sort this all out.
1394 */
1395 info->control = usb_ifnum_to_if(dev->udev,
1396 info->u->bMasterInterface0);
1397 info->data = usb_ifnum_to_if(dev->udev,
1398 info->u->bSlaveInterface0);
1399 if (!info->control || !info->data) {
1400 dev_dbg (&intf->dev,
1401 "master #%u/%p slave #%u/%p\n",
1402 info->u->bMasterInterface0,
1403 info->control,
1404 info->u->bSlaveInterface0,
1405 info->data);
1406 goto bad_desc;
1407 }
1408 if (info->control != intf) {
1409 dev_dbg (&intf->dev, "bogus CDC Union\n");
1410 /* Ambit USB Cable Modem (and maybe others)
1411 * interchanges master and slave interface.
1412 */
1413 if (info->data == intf) {
1414 info->data = info->control;
1415 info->control = intf;
1416 } else
1417 goto bad_desc;
1418 }
1419
1420 /* a data interface altsetting does the real i/o */
1421 d = &info->data->cur_altsetting->desc;
1422 if (d->bInterfaceClass != USB_CLASS_CDC_DATA) {
1423 dev_dbg (&intf->dev, "slave class %u\n",
1424 d->bInterfaceClass);
1425 goto bad_desc;
1426 }
1427 break;
1428 case USB_CDC_ETHERNET_TYPE:
1429 if (info->ether) {
1430 dev_dbg (&intf->dev, "extra CDC ether\n");
1431 goto bad_desc;
1432 }
1433 info->ether = (void *) buf;
1434 if (info->ether->bLength != sizeof *info->ether) {
1435 dev_dbg (&intf->dev, "CDC ether len %u\n",
1436 info->u->bLength);
1437 goto bad_desc;
1438 }
1439 dev->net->mtu = le16_to_cpup (
1440 &info->ether->wMaxSegmentSize)
1441 - ETH_HLEN;
1442 /* because of Zaurus, we may be ignoring the host
1443 * side link address we were given.
1444 */
1445 break;
1446 }
1447 next_desc:
1448 len -= buf [0]; /* bLength */
1449 buf += buf [0];
1450 }
1451
1452 if (!info->header || !info->u || (!rndis && !info->ether)) {
1453 dev_dbg (&intf->dev, "missing cdc %s%s%sdescriptor\n",
1454 info->header ? "" : "header ",
1455 info->u ? "" : "union ",
1456 info->ether ? "" : "ether ");
1457 goto bad_desc;
1458 }
1459
1460 /* claim data interface and set it up ... with side effects.
1461 * network traffic can't flow until an altsetting is enabled.
1462 */
1463 status = usb_driver_claim_interface (&usbnet_driver, info->data, dev);
1464 if (status < 0)
1465 return status;
1466 status = get_endpoints (dev, info->data);
1467 if (status < 0) {
1468 /* ensure immediate exit from usbnet_disconnect */
1469 usb_set_intfdata(info->data, NULL);
1470 usb_driver_release_interface (&usbnet_driver, info->data);
1471 return status;
1472 }
1473
1474 /* status endpoint: optional for CDC Ethernet, not RNDIS (or ACM) */
1475 dev->status = NULL;
1476 if (info->control->cur_altsetting->desc.bNumEndpoints == 1) {
1477 struct usb_endpoint_descriptor *desc;
1478
1479 dev->status = &info->control->cur_altsetting->endpoint [0];
1480 desc = &dev->status->desc;
1481 if (desc->bmAttributes != USB_ENDPOINT_XFER_INT
1482 || !(desc->bEndpointAddress & USB_DIR_IN)
1483 || (le16_to_cpu(desc->wMaxPacketSize)
1484 < sizeof (struct usb_cdc_notification))
1485 || !desc->bInterval) {
1486 dev_dbg (&intf->dev, "bad notification endpoint\n");
1487 dev->status = NULL;
1488 }
1489 }
1490 if (rndis && !dev->status) {
1491 dev_dbg (&intf->dev, "missing RNDIS status endpoint\n");
1492 usb_set_intfdata(info->data, NULL);
1493 usb_driver_release_interface (&usbnet_driver, info->data);
1494 return -ENODEV;
1495 }
1496 return 0;
1497
1498 bad_desc:
1499 dev_info (&dev->udev->dev, "bad CDC descriptors\n");
1500 return -ENODEV;
1501 }
1502
1503 static void cdc_unbind (struct usbnet *dev, struct usb_interface *intf)
1504 {
1505 struct cdc_state *info = (void *) &dev->data;
1506
1507 /* disconnect master --> disconnect slave */
1508 if (intf == info->control && info->data) {
1509 /* ensure immediate exit from usbnet_disconnect */
1510 usb_set_intfdata(info->data, NULL);
1511 usb_driver_release_interface (&usbnet_driver, info->data);
1512 info->data = NULL;
1513 }
1514
1515 /* and vice versa (just in case) */
1516 else if (intf == info->data && info->control) {
1517 /* ensure immediate exit from usbnet_disconnect */
1518 usb_set_intfdata(info->control, NULL);
1519 usb_driver_release_interface (&usbnet_driver, info->control);
1520 info->control = NULL;
1521 }
1522 }
1523
1524
1525 static void dumpspeed (struct usbnet *dev, __le32 *speeds)
1526 {
1527 if (netif_msg_timer (dev))
1528 devinfo (dev, "link speeds: %u kbps up, %u kbps down",
1529 __le32_to_cpu(speeds[0]) / 1000,
1530 __le32_to_cpu(speeds[1]) / 1000);
1531 }
1532
1533 static void cdc_status (struct usbnet *dev, struct urb *urb)
1534 {
1535 struct usb_cdc_notification *event;
1536
1537 if (urb->actual_length < sizeof *event)
1538 return;
1539
1540 /* SPEED_CHANGE can get split into two 8-byte packets */
1541 if (test_and_clear_bit (EVENT_STS_SPLIT, &dev->flags)) {
1542 dumpspeed (dev, (__le32 *) urb->transfer_buffer);
1543 return;
1544 }
1545
1546 event = urb->transfer_buffer;
1547 switch (event->bNotificationType) {
1548 case USB_CDC_NOTIFY_NETWORK_CONNECTION:
1549 if (netif_msg_timer (dev))
1550 devdbg (dev, "CDC: carrier %s",
1551 event->wValue ? "on" : "off");
1552 if (event->wValue)
1553 netif_carrier_on(dev->net);
1554 else
1555 netif_carrier_off(dev->net);
1556 break;
1557 case USB_CDC_NOTIFY_SPEED_CHANGE: /* tx/rx rates */
1558 if (netif_msg_timer (dev))
1559 devdbg (dev, "CDC: speed change (len %d)",
1560 urb->actual_length);
1561 if (urb->actual_length != (sizeof *event + 8))
1562 set_bit (EVENT_STS_SPLIT, &dev->flags);
1563 else
1564 dumpspeed (dev, (__le32 *) &event[1]);
1565 break;
1566 // case USB_CDC_NOTIFY_RESPONSE_AVAILABLE: /* RNDIS; or unsolicited */
1567 default:
1568 deverr (dev, "CDC: unexpected notification %02x!",
1569 event->bNotificationType);
1570 break;
1571 }
1572 }
1573
1574 #endif /* NEED_GENERIC_CDC */
1575
1576 \f
1577 #ifdef CONFIG_USB_CDCETHER
1578 #define HAVE_HARDWARE
1579
1580 /*-------------------------------------------------------------------------
1581 *
1582 * Communications Device Class, Ethernet Control model
1583 *
1584 * Takes two interfaces. The DATA interface is inactive till an altsetting
1585 * is selected. Configuration data includes class descriptors.
1586 *
1587 * This should interop with whatever the 2.4 "CDCEther.c" driver
1588 * (by Brad Hards) talked with.
1589 *
1590 *-------------------------------------------------------------------------*/
1591
1592 #include <linux/ctype.h>
1593
1594 static u8 nibble (unsigned char c)
1595 {
1596 if (likely (isdigit (c)))
1597 return c - '0';
1598 c = toupper (c);
1599 if (likely (isxdigit (c)))
1600 return 10 + c - 'A';
1601 return 0;
1602 }
1603
1604 static inline int
1605 get_ethernet_addr (struct usbnet *dev, struct usb_cdc_ether_desc *e)
1606 {
1607 int tmp, i;
1608 unsigned char buf [13];
1609
1610 tmp = usb_string (dev->udev, e->iMACAddress, buf, sizeof buf);
1611 if (tmp != 12) {
1612 dev_dbg (&dev->udev->dev,
1613 "bad MAC string %d fetch, %d\n", e->iMACAddress, tmp);
1614 if (tmp >= 0)
1615 tmp = -EINVAL;
1616 return tmp;
1617 }
1618 for (i = tmp = 0; i < 6; i++, tmp += 2)
1619 dev->net->dev_addr [i] =
1620 (nibble (buf [tmp]) << 4) + nibble (buf [tmp + 1]);
1621 return 0;
1622 }
1623
1624 static int cdc_bind (struct usbnet *dev, struct usb_interface *intf)
1625 {
1626 int status;
1627 struct cdc_state *info = (void *) &dev->data;
1628
1629 status = generic_cdc_bind (dev, intf);
1630 if (status < 0)
1631 return status;
1632
1633 status = get_ethernet_addr (dev, info->ether);
1634 if (status < 0) {
1635 usb_set_intfdata(info->data, NULL);
1636 usb_driver_release_interface (&usbnet_driver, info->data);
1637 return status;
1638 }
1639
1640 /* FIXME cdc-ether has some multicast code too, though it complains
1641 * in routine cases. info->ether describes the multicast support.
1642 */
1643 return 0;
1644 }
1645
1646 static const struct driver_info cdc_info = {
1647 .description = "CDC Ethernet Device",
1648 .flags = FLAG_ETHER,
1649 // .check_connect = cdc_check_connect,
1650 .bind = cdc_bind,
1651 .unbind = cdc_unbind,
1652 .status = cdc_status,
1653 };
1654
1655 #endif /* CONFIG_USB_CDCETHER */
1656
1657
1658 \f
1659 #ifdef CONFIG_USB_EPSON2888
1660 #define HAVE_HARDWARE
1661
1662 /*-------------------------------------------------------------------------
1663 *
1664 * EPSON USB clients
1665 *
1666 * This is the same idea as Linux PDAs (below) except the firmware in the
1667 * device might not be Tux-powered. Epson provides reference firmware that
1668 * implements this interface. Product developers can reuse or modify that
1669 * code, such as by using their own product and vendor codes.
1670 *
1671 * Support was from Juro Bystricky <bystricky.juro@erd.epson.com>
1672 *
1673 *-------------------------------------------------------------------------*/
1674
1675 static const struct driver_info epson2888_info = {
1676 .description = "Epson USB Device",
1677 .check_connect = always_connected,
1678
1679 .in = 4, .out = 3,
1680 };
1681
1682 #endif /* CONFIG_USB_EPSON2888 */
1683
1684 \f
1685 #ifdef CONFIG_USB_GENESYS
1686 #define HAVE_HARDWARE
1687
1688 /*-------------------------------------------------------------------------
1689 *
1690 * GeneSys GL620USB-A (www.genesyslogic.com.tw)
1691 *
1692 * ... should partially interop with the Win32 driver for this hardware
1693 * The GeneSys docs imply there's some NDIS issue motivating this framing.
1694 *
1695 * Some info from GeneSys:
1696 * - GL620USB-A is full duplex; GL620USB is only half duplex for bulk.
1697 * (Some cables, like the BAFO-100c, use the half duplex version.)
1698 * - For the full duplex model, the low bit of the version code says
1699 * which side is which ("left/right").
1700 * - For the half duplex type, a control/interrupt handshake settles
1701 * the transfer direction. (That's disabled here, partially coded.)
1702 * A control URB would block until other side writes an interrupt.
1703 *
1704 * Original code from Jiun-Jie Huang <huangjj@genesyslogic.com.tw>
1705 * and merged into "usbnet" by Stanislav Brabec <utx@penguin.cz>.
1706 *
1707 *-------------------------------------------------------------------------*/
1708
1709 // control msg write command
1710 #define GENELINK_CONNECT_WRITE 0xF0
1711 // interrupt pipe index
1712 #define GENELINK_INTERRUPT_PIPE 0x03
1713 // interrupt read buffer size
1714 #define INTERRUPT_BUFSIZE 0x08
1715 // interrupt pipe interval value
1716 #define GENELINK_INTERRUPT_INTERVAL 0x10
1717 // max transmit packet number per transmit
1718 #define GL_MAX_TRANSMIT_PACKETS 32
1719 // max packet length
1720 #define GL_MAX_PACKET_LEN 1514
1721 // max receive buffer size
1722 #define GL_RCV_BUF_SIZE \
1723 (((GL_MAX_PACKET_LEN + 4) * GL_MAX_TRANSMIT_PACKETS) + 4)
1724
1725 struct gl_packet {
1726 u32 packet_length;
1727 char packet_data [1];
1728 };
1729
1730 struct gl_header {
1731 u32 packet_count;
1732 struct gl_packet packets;
1733 };
1734
1735 #ifdef GENELINK_ACK
1736
1737 // FIXME: this code is incomplete, not debugged; it doesn't
1738 // handle interrupts correctly. interrupts should be generic
1739 // code like all other device I/O, anyway.
1740
1741 struct gl_priv {
1742 struct urb *irq_urb;
1743 char irq_buf [INTERRUPT_BUFSIZE];
1744 };
1745
1746 static inline int gl_control_write (struct usbnet *dev, u8 request, u16 value)
1747 {
1748 int retval;
1749
1750 retval = usb_control_msg (dev->udev,
1751 usb_sndctrlpipe (dev->udev, 0),
1752 request,
1753 USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
1754 value,
1755 0, // index
1756 0, // data buffer
1757 0, // size
1758 CONTROL_TIMEOUT_MS);
1759 return retval;
1760 }
1761
1762 static void gl_interrupt_complete (struct urb *urb, struct pt_regs *regs)
1763 {
1764 int status = urb->status;
1765
1766 switch (status) {
1767 case 0:
1768 /* success */
1769 break;
1770 case -ECONNRESET:
1771 case -ENOENT:
1772 case -ESHUTDOWN:
1773 /* this urb is terminated, clean up */
1774 dbg("%s - urb shutting down with status: %d",
1775 __FUNCTION__, status);
1776 return;
1777 default:
1778 dbg("%s - nonzero urb status received: %d",
1779 __FUNCTION__, urb->status);
1780 }
1781
1782 status = usb_submit_urb (urb, GFP_ATOMIC);
1783 if (status)
1784 err ("%s - usb_submit_urb failed with result %d",
1785 __FUNCTION__, status);
1786 }
1787
1788 static int gl_interrupt_read (struct usbnet *dev)
1789 {
1790 struct gl_priv *priv = dev->priv_data;
1791 int retval;
1792
1793 // issue usb interrupt read
1794 if (priv && priv->irq_urb) {
1795 // submit urb
1796 if ((retval = usb_submit_urb (priv->irq_urb, GFP_KERNEL)) != 0)
1797 dbg ("gl_interrupt_read: submit fail - %X...", retval);
1798 else
1799 dbg ("gl_interrupt_read: submit success...");
1800 }
1801
1802 return 0;
1803 }
1804
1805 // check whether another side is connected
1806 static int genelink_check_connect (struct usbnet *dev)
1807 {
1808 int retval;
1809
1810 dbg ("genelink_check_connect...");
1811
1812 // detect whether another side is connected
1813 if ((retval = gl_control_write (dev, GENELINK_CONNECT_WRITE, 0)) != 0) {
1814 dbg ("%s: genelink_check_connect write fail - %X",
1815 dev->net->name, retval);
1816 return retval;
1817 }
1818
1819 // usb interrupt read to ack another side
1820 if ((retval = gl_interrupt_read (dev)) != 0) {
1821 dbg ("%s: genelink_check_connect read fail - %X",
1822 dev->net->name, retval);
1823 return retval;
1824 }
1825
1826 dbg ("%s: genelink_check_connect read success", dev->net->name);
1827 return 0;
1828 }
1829
1830 // allocate and initialize the private data for genelink
1831 static int genelink_init (struct usbnet *dev)
1832 {
1833 struct gl_priv *priv;
1834
1835 // allocate the private data structure
1836 if ((priv = kmalloc (sizeof *priv, GFP_KERNEL)) == 0) {
1837 dbg ("%s: cannot allocate private data per device",
1838 dev->net->name);
1839 return -ENOMEM;
1840 }
1841
1842 // allocate irq urb
1843 if ((priv->irq_urb = usb_alloc_urb (0, GFP_KERNEL)) == 0) {
1844 dbg ("%s: cannot allocate private irq urb per device",
1845 dev->net->name);
1846 kfree (priv);
1847 return -ENOMEM;
1848 }
1849
1850 // fill irq urb
1851 usb_fill_int_urb (priv->irq_urb, dev->udev,
1852 usb_rcvintpipe (dev->udev, GENELINK_INTERRUPT_PIPE),
1853 priv->irq_buf, INTERRUPT_BUFSIZE,
1854 gl_interrupt_complete, 0,
1855 GENELINK_INTERRUPT_INTERVAL);
1856
1857 // set private data pointer
1858 dev->priv_data = priv;
1859
1860 return 0;
1861 }
1862
1863 // release the private data
1864 static int genelink_free (struct usbnet *dev)
1865 {
1866 struct gl_priv *priv = dev->priv_data;
1867
1868 if (!priv)
1869 return 0;
1870
1871 // FIXME: can't cancel here; it's synchronous, and
1872 // should have happened earlier in any case (interrupt
1873 // handling needs to be generic)
1874
1875 // cancel irq urb first
1876 usb_kill_urb (priv->irq_urb);
1877
1878 // free irq urb
1879 usb_free_urb (priv->irq_urb);
1880
1881 // free the private data structure
1882 kfree (priv);
1883
1884 return 0;
1885 }
1886
1887 #endif
1888
1889 static int genelink_rx_fixup (struct usbnet *dev, struct sk_buff *skb)
1890 {
1891 struct gl_header *header;
1892 struct gl_packet *packet;
1893 struct sk_buff *gl_skb;
1894 u32 size;
1895
1896 header = (struct gl_header *) skb->data;
1897
1898 // get the packet count of the received skb
1899 le32_to_cpus (&header->packet_count);
1900 if ((header->packet_count > GL_MAX_TRANSMIT_PACKETS)
1901 || (header->packet_count < 0)) {
1902 dbg ("genelink: invalid received packet count %d",
1903 header->packet_count);
1904 return 0;
1905 }
1906
1907 // set the current packet pointer to the first packet
1908 packet = &header->packets;
1909
1910 // decrement the length for the packet count size 4 bytes
1911 skb_pull (skb, 4);
1912
1913 while (header->packet_count > 1) {
1914 // get the packet length
1915 size = packet->packet_length;
1916
1917 // this may be a broken packet
1918 if (size > GL_MAX_PACKET_LEN) {
1919 dbg ("genelink: invalid rx length %d", size);
1920 return 0;
1921 }
1922
1923 // allocate the skb for the individual packet
1924 gl_skb = alloc_skb (size, GFP_ATOMIC);
1925 if (gl_skb) {
1926
1927 // copy the packet data to the new skb
1928 memcpy(skb_put(gl_skb, size), packet->packet_data, size);
1929 skb_return (dev, skb);
1930 }
1931
1932 // advance to the next packet
1933 packet = (struct gl_packet *)
1934 &packet->packet_data [size];
1935 header->packet_count--;
1936
1937 // shift the data pointer to the next gl_packet
1938 skb_pull (skb, size + 4);
1939 }
1940
1941 // skip the packet length field 4 bytes
1942 skb_pull (skb, 4);
1943
1944 if (skb->len > GL_MAX_PACKET_LEN) {
1945 dbg ("genelink: invalid rx length %d", skb->len);
1946 return 0;
1947 }
1948 return 1;
1949 }
1950
1951 static struct sk_buff *
1952 genelink_tx_fixup (struct usbnet *dev, struct sk_buff *skb, int flags)
1953 {
1954 int padlen;
1955 int length = skb->len;
1956 int headroom = skb_headroom (skb);
1957 int tailroom = skb_tailroom (skb);
1958 u32 *packet_count;
1959 u32 *packet_len;
1960
1961 // FIXME: magic numbers, bleech
1962 padlen = ((skb->len + (4 + 4*1)) % 64) ? 0 : 1;
1963
1964 if ((!skb_cloned (skb))
1965 && ((headroom + tailroom) >= (padlen + (4 + 4*1)))) {
1966 if ((headroom < (4 + 4*1)) || (tailroom < padlen)) {
1967 skb->data = memmove (skb->head + (4 + 4*1),
1968 skb->data, skb->len);
1969 skb->tail = skb->data + skb->len;
1970 }
1971 } else {
1972 struct sk_buff *skb2;
1973 skb2 = skb_copy_expand (skb, (4 + 4*1) , padlen, flags);
1974 dev_kfree_skb_any (skb);
1975 skb = skb2;
1976 if (!skb)
1977 return NULL;
1978 }
1979
1980 // attach the packet count to the header
1981 packet_count = (u32 *) skb_push (skb, (4 + 4*1));
1982 packet_len = packet_count + 1;
1983
1984 // FIXME little endian?
1985 *packet_count = 1;
1986 *packet_len = length;
1987
1988 // add padding byte
1989 if ((skb->len % dev->maxpacket) == 0)
1990 skb_put (skb, 1);
1991
1992 return skb;
1993 }
1994
1995 static const struct driver_info genelink_info = {
1996 .description = "Genesys GeneLink",
1997 .flags = FLAG_FRAMING_GL | FLAG_NO_SETINT,
1998 .rx_fixup = genelink_rx_fixup,
1999 .tx_fixup = genelink_tx_fixup,
2000
2001 .in = 1, .out = 2,
2002
2003 #ifdef GENELINK_ACK
2004 .check_connect =genelink_check_connect,
2005 #endif
2006 };
2007
2008 #endif /* CONFIG_USB_GENESYS */
2009
2010
2011 \f
2012 #ifdef CONFIG_USB_NET1080
2013 #define HAVE_HARDWARE
2014
2015 /*-------------------------------------------------------------------------
2016 *
2017 * Netchip 1080 driver ... http://www.netchip.com
2018 * Used in LapLink cables
2019 *
2020 *-------------------------------------------------------------------------*/
2021
2022 #define dev_packet_id data[0]
2023 #define frame_errors data[1]
2024
2025 /*
2026 * NetChip framing of ethernet packets, supporting additional error
2027 * checks for links that may drop bulk packets from inside messages.
2028 * Odd USB length == always short read for last usb packet.
2029 * - nc_header
2030 * - Ethernet header (14 bytes)
2031 * - payload
2032 * - (optional padding byte, if needed so length becomes odd)
2033 * - nc_trailer
2034 *
2035 * This framing is to be avoided for non-NetChip devices.
2036 */
2037
2038 struct nc_header { // packed:
2039 __le16 hdr_len; // sizeof nc_header (LE, all)
2040 __le16 packet_len; // payload size (including ethhdr)
2041 __le16 packet_id; // detects dropped packets
2042 #define MIN_HEADER 6
2043
2044 // all else is optional, and must start with:
2045 // u16 vendorId; // from usb-if
2046 // u16 productId;
2047 } __attribute__((__packed__));
2048
2049 #define PAD_BYTE ((unsigned char)0xAC)
2050
2051 struct nc_trailer {
2052 __le16 packet_id;
2053 } __attribute__((__packed__));
2054
2055 // packets may use FLAG_FRAMING_NC and optional pad
2056 #define FRAMED_SIZE(mtu) (sizeof (struct nc_header) \
2057 + sizeof (struct ethhdr) \
2058 + (mtu) \
2059 + 1 \
2060 + sizeof (struct nc_trailer))
2061
2062 #define MIN_FRAMED FRAMED_SIZE(0)
2063
2064
2065 /*
2066 * Zero means no timeout; else, how long a 64 byte bulk packet may be queued
2067 * before the hardware drops it. If that's done, the driver will need to
2068 * frame network packets to guard against the dropped USB packets. The win32
2069 * driver sets this for both sides of the link.
2070 */
2071 #define NC_READ_TTL_MS ((u8)255) // ms
2072
2073 /*
2074 * We ignore most registers and EEPROM contents.
2075 */
2076 #define REG_USBCTL ((u8)0x04)
2077 #define REG_TTL ((u8)0x10)
2078 #define REG_STATUS ((u8)0x11)
2079
2080 /*
2081 * Vendor specific requests to read/write data
2082 */
2083 #define REQUEST_REGISTER ((u8)0x10)
2084 #define REQUEST_EEPROM ((u8)0x11)
2085
2086 static int
2087 nc_vendor_read (struct usbnet *dev, u8 req, u8 regnum, u16 *retval_ptr)
2088 {
2089 int status = usb_control_msg (dev->udev,
2090 usb_rcvctrlpipe (dev->udev, 0),
2091 req,
2092 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
2093 0, regnum,
2094 retval_ptr, sizeof *retval_ptr,
2095 CONTROL_TIMEOUT_MS);
2096 if (status > 0)
2097 status = 0;
2098 if (!status)
2099 le16_to_cpus (retval_ptr);
2100 return status;
2101 }
2102
2103 static inline int
2104 nc_register_read (struct usbnet *dev, u8 regnum, u16 *retval_ptr)
2105 {
2106 return nc_vendor_read (dev, REQUEST_REGISTER, regnum, retval_ptr);
2107 }
2108
2109 // no retval ... can become async, usable in_interrupt()
2110 static void
2111 nc_vendor_write (struct usbnet *dev, u8 req, u8 regnum, u16 value)
2112 {
2113 usb_control_msg (dev->udev,
2114 usb_sndctrlpipe (dev->udev, 0),
2115 req,
2116 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
2117 value, regnum,
2118 NULL, 0, // data is in setup packet
2119 CONTROL_TIMEOUT_MS);
2120 }
2121
2122 static inline void
2123 nc_register_write (struct usbnet *dev, u8 regnum, u16 value)
2124 {
2125 nc_vendor_write (dev, REQUEST_REGISTER, regnum, value);
2126 }
2127
2128
2129 #if 0
2130 static void nc_dump_registers (struct usbnet *dev)
2131 {
2132 u8 reg;
2133 u16 *vp = kmalloc (sizeof (u16));
2134
2135 if (!vp) {
2136 dbg ("no memory?");
2137 return;
2138 }
2139
2140 dbg ("%s registers:", dev->net->name);
2141 for (reg = 0; reg < 0x20; reg++) {
2142 int retval;
2143
2144 // reading some registers is trouble
2145 if (reg >= 0x08 && reg <= 0xf)
2146 continue;
2147 if (reg >= 0x12 && reg <= 0x1e)
2148 continue;
2149
2150 retval = nc_register_read (dev, reg, vp);
2151 if (retval < 0)
2152 dbg ("%s reg [0x%x] ==> error %d",
2153 dev->net->name, reg, retval);
2154 else
2155 dbg ("%s reg [0x%x] = 0x%x",
2156 dev->net->name, reg, *vp);
2157 }
2158 kfree (vp);
2159 }
2160 #endif
2161
2162
2163 /*-------------------------------------------------------------------------*/
2164
2165 /*
2166 * Control register
2167 */
2168
2169 #define USBCTL_WRITABLE_MASK 0x1f0f
2170 // bits 15-13 reserved, r/o
2171 #define USBCTL_ENABLE_LANG (1 << 12)
2172 #define USBCTL_ENABLE_MFGR (1 << 11)
2173 #define USBCTL_ENABLE_PROD (1 << 10)
2174 #define USBCTL_ENABLE_SERIAL (1 << 9)
2175 #define USBCTL_ENABLE_DEFAULTS (1 << 8)
2176 // bits 7-4 reserved, r/o
2177 #define USBCTL_FLUSH_OTHER (1 << 3)
2178 #define USBCTL_FLUSH_THIS (1 << 2)
2179 #define USBCTL_DISCONN_OTHER (1 << 1)
2180 #define USBCTL_DISCONN_THIS (1 << 0)
2181
2182 static inline void nc_dump_usbctl (struct usbnet *dev, u16 usbctl)
2183 {
2184 if (!netif_msg_link (dev))
2185 return;
2186 devdbg (dev, "net1080 %s-%s usbctl 0x%x:%s%s%s%s%s;"
2187 " this%s%s;"
2188 " other%s%s; r/o 0x%x",
2189 dev->udev->bus->bus_name, dev->udev->devpath,
2190 usbctl,
2191 (usbctl & USBCTL_ENABLE_LANG) ? " lang" : "",
2192 (usbctl & USBCTL_ENABLE_MFGR) ? " mfgr" : "",
2193 (usbctl & USBCTL_ENABLE_PROD) ? " prod" : "",
2194 (usbctl & USBCTL_ENABLE_SERIAL) ? " serial" : "",
2195 (usbctl & USBCTL_ENABLE_DEFAULTS) ? " defaults" : "",
2196
2197 (usbctl & USBCTL_FLUSH_OTHER) ? " FLUSH" : "",
2198 (usbctl & USBCTL_DISCONN_OTHER) ? " DIS" : "",
2199 (usbctl & USBCTL_FLUSH_THIS) ? " FLUSH" : "",
2200 (usbctl & USBCTL_DISCONN_THIS) ? " DIS" : "",
2201 usbctl & ~USBCTL_WRITABLE_MASK
2202 );
2203 }
2204
2205 /*-------------------------------------------------------------------------*/
2206
2207 /*
2208 * Status register
2209 */
2210
2211 #define STATUS_PORT_A (1 << 15)
2212
2213 #define STATUS_CONN_OTHER (1 << 14)
2214 #define STATUS_SUSPEND_OTHER (1 << 13)
2215 #define STATUS_MAILBOX_OTHER (1 << 12)
2216 #define STATUS_PACKETS_OTHER(n) (((n) >> 8) && 0x03)
2217
2218 #define STATUS_CONN_THIS (1 << 6)
2219 #define STATUS_SUSPEND_THIS (1 << 5)
2220 #define STATUS_MAILBOX_THIS (1 << 4)
2221 #define STATUS_PACKETS_THIS(n) (((n) >> 0) && 0x03)
2222
2223 #define STATUS_UNSPEC_MASK 0x0c8c
2224 #define STATUS_NOISE_MASK ((u16)~(0x0303|STATUS_UNSPEC_MASK))
2225
2226
2227 static inline void nc_dump_status (struct usbnet *dev, u16 status)
2228 {
2229 if (!netif_msg_link (dev))
2230 return;
2231 devdbg (dev, "net1080 %s-%s status 0x%x:"
2232 " this (%c) PKT=%d%s%s%s;"
2233 " other PKT=%d%s%s%s; unspec 0x%x",
2234 dev->udev->bus->bus_name, dev->udev->devpath,
2235 status,
2236
2237 // XXX the packet counts don't seem right
2238 // (1 at reset, not 0); maybe UNSPEC too
2239
2240 (status & STATUS_PORT_A) ? 'A' : 'B',
2241 STATUS_PACKETS_THIS (status),
2242 (status & STATUS_CONN_THIS) ? " CON" : "",
2243 (status & STATUS_SUSPEND_THIS) ? " SUS" : "",
2244 (status & STATUS_MAILBOX_THIS) ? " MBOX" : "",
2245
2246 STATUS_PACKETS_OTHER (status),
2247 (status & STATUS_CONN_OTHER) ? " CON" : "",
2248 (status & STATUS_SUSPEND_OTHER) ? " SUS" : "",
2249 (status & STATUS_MAILBOX_OTHER) ? " MBOX" : "",
2250
2251 status & STATUS_UNSPEC_MASK
2252 );
2253 }
2254
2255 /*-------------------------------------------------------------------------*/
2256
2257 /*
2258 * TTL register
2259 */
2260
2261 #define TTL_THIS(ttl) (0x00ff & ttl)
2262 #define TTL_OTHER(ttl) (0x00ff & (ttl >> 8))
2263 #define MK_TTL(this,other) ((u16)(((other)<<8)|(0x00ff&(this))))
2264
2265 static inline void nc_dump_ttl (struct usbnet *dev, u16 ttl)
2266 {
2267 if (netif_msg_link (dev))
2268 devdbg (dev, "net1080 %s-%s ttl 0x%x this = %d, other = %d",
2269 dev->udev->bus->bus_name, dev->udev->devpath,
2270 ttl, TTL_THIS (ttl), TTL_OTHER (ttl));
2271 }
2272
2273 /*-------------------------------------------------------------------------*/
2274
2275 static int net1080_reset (struct usbnet *dev)
2276 {
2277 u16 usbctl, status, ttl;
2278 u16 *vp = kmalloc (sizeof (u16), GFP_KERNEL);
2279 int retval;
2280
2281 if (!vp)
2282 return -ENOMEM;
2283
2284 // nc_dump_registers (dev);
2285
2286 if ((retval = nc_register_read (dev, REG_STATUS, vp)) < 0) {
2287 dbg ("can't read %s-%s status: %d",
2288 dev->udev->bus->bus_name, dev->udev->devpath, retval);
2289 goto done;
2290 }
2291 status = *vp;
2292 nc_dump_status (dev, status);
2293
2294 if ((retval = nc_register_read (dev, REG_USBCTL, vp)) < 0) {
2295 dbg ("can't read USBCTL, %d", retval);
2296 goto done;
2297 }
2298 usbctl = *vp;
2299 nc_dump_usbctl (dev, usbctl);
2300
2301 nc_register_write (dev, REG_USBCTL,
2302 USBCTL_FLUSH_THIS | USBCTL_FLUSH_OTHER);
2303
2304 if ((retval = nc_register_read (dev, REG_TTL, vp)) < 0) {
2305 dbg ("can't read TTL, %d", retval);
2306 goto done;
2307 }
2308 ttl = *vp;
2309 // nc_dump_ttl (dev, ttl);
2310
2311 nc_register_write (dev, REG_TTL,
2312 MK_TTL (NC_READ_TTL_MS, TTL_OTHER (ttl)) );
2313 dbg ("%s: assigned TTL, %d ms", dev->net->name, NC_READ_TTL_MS);
2314
2315 if (netif_msg_link (dev))
2316 devinfo (dev, "port %c, peer %sconnected",
2317 (status & STATUS_PORT_A) ? 'A' : 'B',
2318 (status & STATUS_CONN_OTHER) ? "" : "dis"
2319 );
2320 retval = 0;
2321
2322 done:
2323 kfree (vp);
2324 return retval;
2325 }
2326
2327 static int net1080_check_connect (struct usbnet *dev)
2328 {
2329 int retval;
2330 u16 status;
2331 u16 *vp = kmalloc (sizeof (u16), GFP_KERNEL);
2332
2333 if (!vp)
2334 return -ENOMEM;
2335 retval = nc_register_read (dev, REG_STATUS, vp);
2336 status = *vp;
2337 kfree (vp);
2338 if (retval != 0) {
2339 dbg ("%s net1080_check_conn read - %d", dev->net->name, retval);
2340 return retval;
2341 }
2342 if ((status & STATUS_CONN_OTHER) != STATUS_CONN_OTHER)
2343 return -ENOLINK;
2344 return 0;
2345 }
2346
2347 static void nc_flush_complete (struct urb *urb, struct pt_regs *regs)
2348 {
2349 kfree (urb->context);
2350 usb_free_urb(urb);
2351 }
2352
2353 static void nc_ensure_sync (struct usbnet *dev)
2354 {
2355 dev->frame_errors++;
2356 if (dev->frame_errors > 5) {
2357 struct urb *urb;
2358 struct usb_ctrlrequest *req;
2359 int status;
2360
2361 /* Send a flush */
2362 urb = usb_alloc_urb (0, SLAB_ATOMIC);
2363 if (!urb)
2364 return;
2365
2366 req = kmalloc (sizeof *req, GFP_ATOMIC);
2367 if (!req) {
2368 usb_free_urb (urb);
2369 return;
2370 }
2371
2372 req->bRequestType = USB_DIR_OUT
2373 | USB_TYPE_VENDOR
2374 | USB_RECIP_DEVICE;
2375 req->bRequest = REQUEST_REGISTER;
2376 req->wValue = cpu_to_le16 (USBCTL_FLUSH_THIS
2377 | USBCTL_FLUSH_OTHER);
2378 req->wIndex = cpu_to_le16 (REG_USBCTL);
2379 req->wLength = cpu_to_le16 (0);
2380
2381 /* queue an async control request, we don't need
2382 * to do anything when it finishes except clean up.
2383 */
2384 usb_fill_control_urb (urb, dev->udev,
2385 usb_sndctrlpipe (dev->udev, 0),
2386 (unsigned char *) req,
2387 NULL, 0,
2388 nc_flush_complete, req);
2389 status = usb_submit_urb (urb, GFP_ATOMIC);
2390 if (status) {
2391 kfree (req);
2392 usb_free_urb (urb);
2393 return;
2394 }
2395
2396 if (netif_msg_rx_err (dev))
2397 devdbg (dev, "flush net1080; too many framing errors");
2398 dev->frame_errors = 0;
2399 }
2400 }
2401
2402 static int net1080_rx_fixup (struct usbnet *dev, struct sk_buff *skb)
2403 {
2404 struct nc_header *header;
2405 struct nc_trailer *trailer;
2406 u16 hdr_len, packet_len;
2407
2408 if (!(skb->len & 0x01)
2409 || MIN_FRAMED > skb->len
2410 || skb->len > FRAMED_SIZE (dev->net->mtu)) {
2411 dev->stats.rx_frame_errors++;
2412 dbg ("rx framesize %d range %d..%d mtu %d", skb->len,
2413 (int)MIN_FRAMED, (int)FRAMED_SIZE (dev->net->mtu),
2414 dev->net->mtu);
2415 nc_ensure_sync (dev);
2416 return 0;
2417 }
2418
2419 header = (struct nc_header *) skb->data;
2420 hdr_len = le16_to_cpup (&header->hdr_len);
2421 packet_len = le16_to_cpup (&header->packet_len);
2422 if (FRAMED_SIZE (packet_len) > MAX_PACKET) {
2423 dev->stats.rx_frame_errors++;
2424 dbg ("packet too big, %d", packet_len);
2425 nc_ensure_sync (dev);
2426 return 0;
2427 } else if (hdr_len < MIN_HEADER) {
2428 dev->stats.rx_frame_errors++;
2429 dbg ("header too short, %d", hdr_len);
2430 nc_ensure_sync (dev);
2431 return 0;
2432 } else if (hdr_len > MIN_HEADER) {
2433 // out of band data for us?
2434 dbg ("header OOB, %d bytes", hdr_len - MIN_HEADER);
2435 nc_ensure_sync (dev);
2436 // switch (vendor/product ids) { ... }
2437 }
2438 skb_pull (skb, hdr_len);
2439
2440 trailer = (struct nc_trailer *)
2441 (skb->data + skb->len - sizeof *trailer);
2442 skb_trim (skb, skb->len - sizeof *trailer);
2443
2444 if ((packet_len & 0x01) == 0) {
2445 if (skb->data [packet_len] != PAD_BYTE) {
2446 dev->stats.rx_frame_errors++;
2447 dbg ("bad pad");
2448 return 0;
2449 }
2450 skb_trim (skb, skb->len - 1);
2451 }
2452 if (skb->len != packet_len) {
2453 dev->stats.rx_frame_errors++;
2454 dbg ("bad packet len %d (expected %d)",
2455 skb->len, packet_len);
2456 nc_ensure_sync (dev);
2457 return 0;
2458 }
2459 if (header->packet_id != get_unaligned (&trailer->packet_id)) {
2460 dev->stats.rx_fifo_errors++;
2461 dbg ("(2+ dropped) rx packet_id mismatch 0x%x 0x%x",
2462 le16_to_cpu (header->packet_id),
2463 le16_to_cpu (trailer->packet_id));
2464 return 0;
2465 }
2466 #if 0
2467 devdbg (dev, "frame <rx h %d p %d id %d", header->hdr_len,
2468 header->packet_len, header->packet_id);
2469 #endif
2470 dev->frame_errors = 0;
2471 return 1;
2472 }
2473
2474 static struct sk_buff *
2475 net1080_tx_fixup (struct usbnet *dev, struct sk_buff *skb, int flags)
2476 {
2477 int padlen;
2478 struct sk_buff *skb2;
2479
2480 padlen = ((skb->len + sizeof (struct nc_header)
2481 + sizeof (struct nc_trailer)) & 0x01) ? 0 : 1;
2482 if (!skb_cloned (skb)) {
2483 int headroom = skb_headroom (skb);
2484 int tailroom = skb_tailroom (skb);
2485
2486 if ((padlen + sizeof (struct nc_trailer)) <= tailroom
2487 && sizeof (struct nc_header) <= headroom)
2488 /* There's enough head and tail room */
2489 return skb;
2490
2491 if ((sizeof (struct nc_header) + padlen
2492 + sizeof (struct nc_trailer)) <
2493 (headroom + tailroom)) {
2494 /* There's enough total room, so just readjust */
2495 skb->data = memmove (skb->head
2496 + sizeof (struct nc_header),
2497 skb->data, skb->len);
2498 skb->tail = skb->data + skb->len;
2499 return skb;
2500 }
2501 }
2502
2503 /* Create a new skb to use with the correct size */
2504 skb2 = skb_copy_expand (skb,
2505 sizeof (struct nc_header),
2506 sizeof (struct nc_trailer) + padlen,
2507 flags);
2508 dev_kfree_skb_any (skb);
2509 return skb2;
2510 }
2511
2512 static const struct driver_info net1080_info = {
2513 .description = "NetChip TurboCONNECT",
2514 .flags = FLAG_FRAMING_NC,
2515 .reset = net1080_reset,
2516 .check_connect =net1080_check_connect,
2517 .rx_fixup = net1080_rx_fixup,
2518 .tx_fixup = net1080_tx_fixup,
2519 };
2520
2521 #endif /* CONFIG_USB_NET1080 */
2522
2523
2524 \f
2525 #ifdef CONFIG_USB_PL2301
2526 #define HAVE_HARDWARE
2527
2528 /*-------------------------------------------------------------------------
2529 *
2530 * Prolific PL-2301/PL-2302 driver ... http://www.prolifictech.com
2531 *
2532 * The protocol and handshaking used here should be bug-compatible
2533 * with the Linux 2.2 "plusb" driver, by Deti Fliegl.
2534 *
2535 *-------------------------------------------------------------------------*/
2536
2537 /*
2538 * Bits 0-4 can be used for software handshaking; they're set from
2539 * one end, cleared from the other, "read" with the interrupt byte.
2540 */
2541 #define PL_S_EN (1<<7) /* (feature only) suspend enable */
2542 /* reserved bit -- rx ready (6) ? */
2543 #define PL_TX_READY (1<<5) /* (interrupt only) transmit ready */
2544 #define PL_RESET_OUT (1<<4) /* reset output pipe */
2545 #define PL_RESET_IN (1<<3) /* reset input pipe */
2546 #define PL_TX_C (1<<2) /* transmission complete */
2547 #define PL_TX_REQ (1<<1) /* transmission received */
2548 #define PL_PEER_E (1<<0) /* peer exists */
2549
2550 static inline int
2551 pl_vendor_req (struct usbnet *dev, u8 req, u8 val, u8 index)
2552 {
2553 return usb_control_msg (dev->udev,
2554 usb_rcvctrlpipe (dev->udev, 0),
2555 req,
2556 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
2557 val, index,
2558 NULL, 0,
2559 CONTROL_TIMEOUT_MS);
2560 }
2561
2562 static inline int
2563 pl_clear_QuickLink_features (struct usbnet *dev, int val)
2564 {
2565 return pl_vendor_req (dev, 1, (u8) val, 0);
2566 }
2567
2568 static inline int
2569 pl_set_QuickLink_features (struct usbnet *dev, int val)
2570 {
2571 return pl_vendor_req (dev, 3, (u8) val, 0);
2572 }
2573
2574 /*-------------------------------------------------------------------------*/
2575
2576 static int pl_reset (struct usbnet *dev)
2577 {
2578 /* some units seem to need this reset, others reject it utterly.
2579 * FIXME be more like "naplink" or windows drivers.
2580 */
2581 (void) pl_set_QuickLink_features (dev,
2582 PL_S_EN|PL_RESET_OUT|PL_RESET_IN|PL_PEER_E);
2583 return 0;
2584 }
2585
2586 static const struct driver_info prolific_info = {
2587 .description = "Prolific PL-2301/PL-2302",
2588 .flags = FLAG_NO_SETINT,
2589 /* some PL-2302 versions seem to fail usb_set_interface() */
2590 .reset = pl_reset,
2591 };
2592
2593 #endif /* CONFIG_USB_PL2301 */
2594
2595 \f
2596 #ifdef CONFIG_USB_KC2190
2597 #define HAVE_HARDWARE
2598 static const struct driver_info kc2190_info = {
2599 .description = "KC Technology KC-190",
2600 };
2601 #endif /* CONFIG_USB_KC2190 */
2602
2603 \f
2604 #ifdef CONFIG_USB_ARMLINUX
2605 #define HAVE_HARDWARE
2606
2607 /*-------------------------------------------------------------------------
2608 *
2609 * Intel's SA-1100 chip integrates basic USB support, and is used
2610 * in PDAs like some iPaqs, the Yopy, some Zaurus models, and more.
2611 * When they run Linux, arch/arm/mach-sa1100/usb-eth.c may be used to
2612 * network using minimal USB framing data.
2613 *
2614 * This describes the driver currently in standard ARM Linux kernels.
2615 * The Zaurus uses a different driver (see later).
2616 *
2617 * PXA25x and PXA210 use XScale cores (ARM v5TE) with better USB support
2618 * and different USB endpoint numbering than the SA1100 devices. The
2619 * mach-pxa/usb-eth.c driver re-uses the device ids from mach-sa1100
2620 * so we rely on the endpoint descriptors.
2621 *
2622 *-------------------------------------------------------------------------*/
2623
2624 static const struct driver_info linuxdev_info = {
2625 .description = "Linux Device",
2626 .check_connect = always_connected,
2627 };
2628
2629 static const struct driver_info yopy_info = {
2630 .description = "Yopy",
2631 .check_connect = always_connected,
2632 };
2633
2634 static const struct driver_info blob_info = {
2635 .description = "Boot Loader OBject",
2636 .check_connect = always_connected,
2637 };
2638
2639 #endif /* CONFIG_USB_ARMLINUX */
2640
2641 \f
2642 #ifdef CONFIG_USB_ZAURUS
2643 #define HAVE_HARDWARE
2644
2645 #include <linux/crc32.h>
2646
2647 /*-------------------------------------------------------------------------
2648 *
2649 * Zaurus is also a SA-1110 based PDA, but one using a different driver
2650 * (and framing) for its USB slave/gadget controller than the case above.
2651 *
2652 * For the current version of that driver, the main way that framing is
2653 * nonstandard (also from perspective of the CDC ethernet model!) is a
2654 * crc32, added to help detect when some sa1100 usb-to-memory DMA errata
2655 * haven't been fully worked around. Also, all Zaurii use the same
2656 * default Ethernet address.
2657 *
2658 * PXA based models use the same framing, and also can't implement
2659 * set_interface properly.
2660 *
2661 * All known Zaurii lie about their standards conformance. Most lie by
2662 * saying they support CDC Ethernet. Some lie and say they support CDC
2663 * MDLM (as if for access to cell phone modems). Someone, please beat
2664 * on Sharp for a while with a cluestick.
2665 *
2666 *-------------------------------------------------------------------------*/
2667
2668 static struct sk_buff *
2669 zaurus_tx_fixup (struct usbnet *dev, struct sk_buff *skb, int flags)
2670 {
2671 int padlen;
2672 struct sk_buff *skb2;
2673
2674 padlen = 2;
2675 if (!skb_cloned (skb)) {
2676 int tailroom = skb_tailroom (skb);
2677 if ((padlen + 4) <= tailroom)
2678 goto done;
2679 }
2680 skb2 = skb_copy_expand (skb, 0, 4 + padlen, flags);
2681 dev_kfree_skb_any (skb);
2682 skb = skb2;
2683 if (skb) {
2684 u32 fcs;
2685 done:
2686 fcs = crc32_le (~0, skb->data, skb->len);
2687 fcs = ~fcs;
2688
2689 *skb_put (skb, 1) = fcs & 0xff;
2690 *skb_put (skb, 1) = (fcs>> 8) & 0xff;
2691 *skb_put (skb, 1) = (fcs>>16) & 0xff;
2692 *skb_put (skb, 1) = (fcs>>24) & 0xff;
2693 }
2694 return skb;
2695 }
2696
2697 static const struct driver_info zaurus_sl5x00_info = {
2698 .description = "Sharp Zaurus SL-5x00",
2699 .flags = FLAG_FRAMING_Z,
2700 .check_connect = always_connected,
2701 .bind = generic_cdc_bind,
2702 .unbind = cdc_unbind,
2703 .tx_fixup = zaurus_tx_fixup,
2704 };
2705 #define ZAURUS_STRONGARM_INFO ((unsigned long)&zaurus_sl5x00_info)
2706
2707 static const struct driver_info zaurus_pxa_info = {
2708 .description = "Sharp Zaurus, PXA-2xx based",
2709 .flags = FLAG_FRAMING_Z,
2710 .check_connect = always_connected,
2711 .bind = generic_cdc_bind,
2712 .unbind = cdc_unbind,
2713 .tx_fixup = zaurus_tx_fixup,
2714 };
2715 #define ZAURUS_PXA_INFO ((unsigned long)&zaurus_pxa_info)
2716
2717 static const struct driver_info zaurus_pxa_mdlm_info = {
2718 .description = "Sharp Zaurus, PXA-255 based",
2719 .flags = FLAG_FRAMING_Z,
2720 .check_connect = always_connected,
2721 .tx_fixup = zaurus_tx_fixup,
2722 };
2723
2724 static const struct driver_info olympus_mxl_info = {
2725 .description = "Olympus R1000",
2726 .flags = FLAG_FRAMING_Z,
2727 .check_connect = always_connected,
2728 .bind = generic_cdc_bind,
2729 .unbind = cdc_unbind,
2730 .tx_fixup = zaurus_tx_fixup,
2731 };
2732 #define OLYMPUS_MXL_INFO ((unsigned long)&olympus_mxl_info)
2733
2734 #else
2735
2736 /* blacklist all those devices */
2737 #define ZAURUS_STRONGARM_INFO 0
2738 #define ZAURUS_PXA_INFO 0
2739 #define OLYMPUS_MXL_INFO 0
2740
2741 #endif
2742
2743 \f
2744 /*-------------------------------------------------------------------------
2745 *
2746 * Network Device Driver (peer link to "Host Device", from USB host)
2747 *
2748 *-------------------------------------------------------------------------*/
2749
2750 static int usbnet_change_mtu (struct net_device *net, int new_mtu)
2751 {
2752 struct usbnet *dev = netdev_priv(net);
2753
2754 if (new_mtu <= MIN_PACKET || new_mtu > MAX_PACKET)
2755 return -EINVAL;
2756 #ifdef CONFIG_USB_NET1080
2757 if (((dev->driver_info->flags) & FLAG_FRAMING_NC)) {
2758 if (FRAMED_SIZE (new_mtu) > MAX_PACKET)
2759 return -EINVAL;
2760 }
2761 #endif
2762 #ifdef CONFIG_USB_GENESYS
2763 if (((dev->driver_info->flags) & FLAG_FRAMING_GL)
2764 && new_mtu > GL_MAX_PACKET_LEN)
2765 return -EINVAL;
2766 #endif
2767 // no second zero-length packet read wanted after mtu-sized packets
2768 if (((new_mtu + sizeof (struct ethhdr)) % dev->maxpacket) == 0)
2769 return -EDOM;
2770 net->mtu = new_mtu;
2771 return 0;
2772 }
2773
2774 /*-------------------------------------------------------------------------*/
2775
2776 static struct net_device_stats *usbnet_get_stats (struct net_device *net)
2777 {
2778 struct usbnet *dev = netdev_priv(net);
2779 return &dev->stats;
2780 }
2781
2782 /*-------------------------------------------------------------------------*/
2783
2784 /* some LK 2.4 HCDs oopsed if we freed or resubmitted urbs from
2785 * completion callbacks. 2.5 should have fixed those bugs...
2786 */
2787
2788 static void defer_bh (struct usbnet *dev, struct sk_buff *skb)
2789 {
2790 struct sk_buff_head *list = skb->list;
2791 unsigned long flags;
2792
2793 spin_lock_irqsave (&list->lock, flags);
2794 __skb_unlink (skb, list);
2795 spin_unlock (&list->lock);
2796 spin_lock (&dev->done.lock);
2797 __skb_queue_tail (&dev->done, skb);
2798 if (dev->done.qlen == 1)
2799 tasklet_schedule (&dev->bh);
2800 spin_unlock_irqrestore (&dev->done.lock, flags);
2801 }
2802
2803 /* some work can't be done in tasklets, so we use keventd
2804 *
2805 * NOTE: annoying asymmetry: if it's active, schedule_work() fails,
2806 * but tasklet_schedule() doesn't. hope the failure is rare.
2807 */
2808 static void defer_kevent (struct usbnet *dev, int work)
2809 {
2810 set_bit (work, &dev->flags);
2811 if (!schedule_work (&dev->kevent))
2812 deverr (dev, "kevent %d may have been dropped", work);
2813 else
2814 devdbg (dev, "kevent %d scheduled", work);
2815 }
2816
2817 /*-------------------------------------------------------------------------*/
2818
2819 static void rx_complete (struct urb *urb, struct pt_regs *regs);
2820
2821 static void rx_submit (struct usbnet *dev, struct urb *urb, int flags)
2822 {
2823 struct sk_buff *skb;
2824 struct skb_data *entry;
2825 int retval = 0;
2826 unsigned long lockflags;
2827 size_t size;
2828
2829 #ifdef CONFIG_USB_NET1080
2830 if (dev->driver_info->flags & FLAG_FRAMING_NC)
2831 size = FRAMED_SIZE (dev->net->mtu);
2832 else
2833 #endif
2834 #ifdef CONFIG_USB_GENESYS
2835 if (dev->driver_info->flags & FLAG_FRAMING_GL)
2836 size = GL_RCV_BUF_SIZE;
2837 else
2838 #endif
2839 #ifdef CONFIG_USB_ZAURUS
2840 if (dev->driver_info->flags & FLAG_FRAMING_Z)
2841 size = 6 + (sizeof (struct ethhdr) + dev->net->mtu);
2842 else
2843 #endif
2844 #ifdef CONFIG_USB_RNDIS
2845 if (dev->driver_info->flags & FLAG_FRAMING_RN)
2846 size = RNDIS_MAX_TRANSFER;
2847 else
2848 #endif
2849 #ifdef CONFIG_USB_AX8817X
2850 if (dev->driver_info->flags & FLAG_FRAMING_AX)
2851 size = 2048;
2852 else
2853 #endif
2854 size = (sizeof (struct ethhdr) + dev->net->mtu);
2855
2856 if ((skb = alloc_skb (size + NET_IP_ALIGN, flags)) == NULL) {
2857 if (netif_msg_rx_err (dev))
2858 devdbg (dev, "no rx skb");
2859 defer_kevent (dev, EVENT_RX_MEMORY);
2860 usb_free_urb (urb);
2861 return;
2862 }
2863 skb_reserve (skb, NET_IP_ALIGN);
2864
2865 entry = (struct skb_data *) skb->cb;
2866 entry->urb = urb;
2867 entry->dev = dev;
2868 entry->state = rx_start;
2869 entry->length = 0;
2870
2871 usb_fill_bulk_urb (urb, dev->udev, dev->in,
2872 skb->data, size, rx_complete, skb);
2873 urb->transfer_flags |= URB_ASYNC_UNLINK;
2874
2875 spin_lock_irqsave (&dev->rxq.lock, lockflags);
2876
2877 if (netif_running (dev->net)
2878 && netif_device_present (dev->net)
2879 && !test_bit (EVENT_RX_HALT, &dev->flags)) {
2880 switch (retval = usb_submit_urb (urb, GFP_ATOMIC)){
2881 case -EPIPE:
2882 defer_kevent (dev, EVENT_RX_HALT);
2883 break;
2884 case -ENOMEM:
2885 defer_kevent (dev, EVENT_RX_MEMORY);
2886 break;
2887 case -ENODEV:
2888 if (netif_msg_ifdown (dev))
2889 devdbg (dev, "device gone");
2890 netif_device_detach (dev->net);
2891 break;
2892 default:
2893 if (netif_msg_rx_err (dev))
2894 devdbg (dev, "rx submit, %d", retval);
2895 tasklet_schedule (&dev->bh);
2896 break;
2897 case 0:
2898 __skb_queue_tail (&dev->rxq, skb);
2899 }
2900 } else {
2901 if (netif_msg_ifdown (dev))
2902 devdbg (dev, "rx: stopped");
2903 retval = -ENOLINK;
2904 }
2905 spin_unlock_irqrestore (&dev->rxq.lock, lockflags);
2906 if (retval) {
2907 dev_kfree_skb_any (skb);
2908 usb_free_urb (urb);
2909 }
2910 }
2911
2912
2913 /*-------------------------------------------------------------------------*/
2914
2915 static inline void rx_process (struct usbnet *dev, struct sk_buff *skb)
2916 {
2917 if (dev->driver_info->rx_fixup
2918 && !dev->driver_info->rx_fixup (dev, skb))
2919 goto error;
2920 // else network stack removes extra byte if we forced a short packet
2921
2922 if (skb->len)
2923 skb_return (dev, skb);
2924 else {
2925 if (netif_msg_rx_err (dev))
2926 devdbg (dev, "drop");
2927 error:
2928 dev->stats.rx_errors++;
2929 skb_queue_tail (&dev->done, skb);
2930 }
2931 }
2932
2933 /*-------------------------------------------------------------------------*/
2934
2935 static void rx_complete (struct urb *urb, struct pt_regs *regs)
2936 {
2937 struct sk_buff *skb = (struct sk_buff *) urb->context;
2938 struct skb_data *entry = (struct skb_data *) skb->cb;
2939 struct usbnet *dev = entry->dev;
2940 int urb_status = urb->status;
2941
2942 skb_put (skb, urb->actual_length);
2943 entry->state = rx_done;
2944 entry->urb = NULL;
2945
2946 switch (urb_status) {
2947 // success
2948 case 0:
2949 if (MIN_PACKET > skb->len || skb->len > MAX_PACKET) {
2950 entry->state = rx_cleanup;
2951 dev->stats.rx_errors++;
2952 dev->stats.rx_length_errors++;
2953 if (netif_msg_rx_err (dev))
2954 devdbg (dev, "rx length %d", skb->len);
2955 }
2956 break;
2957
2958 // stalls need manual reset. this is rare ... except that
2959 // when going through USB 2.0 TTs, unplug appears this way.
2960 // we avoid the highspeed version of the ETIMEOUT/EILSEQ
2961 // storm, recovering as needed.
2962 case -EPIPE:
2963 dev->stats.rx_errors++;
2964 defer_kevent (dev, EVENT_RX_HALT);
2965 // FALLTHROUGH
2966
2967 // software-driven interface shutdown
2968 case -ECONNRESET: // async unlink
2969 case -ESHUTDOWN: // hardware gone
2970 if (netif_msg_ifdown (dev))
2971 devdbg (dev, "rx shutdown, code %d", urb_status);
2972 goto block;
2973
2974 // we get controller i/o faults during khubd disconnect() delays.
2975 // throttle down resubmits, to avoid log floods; just temporarily,
2976 // so we still recover when the fault isn't a khubd delay.
2977 case -EPROTO: // ehci
2978 case -ETIMEDOUT: // ohci
2979 case -EILSEQ: // uhci
2980 dev->stats.rx_errors++;
2981 if (!timer_pending (&dev->delay)) {
2982 mod_timer (&dev->delay, jiffies + THROTTLE_JIFFIES);
2983 if (netif_msg_link (dev))
2984 devdbg (dev, "rx throttle %d", urb_status);
2985 }
2986 block:
2987 entry->state = rx_cleanup;
2988 entry->urb = urb;
2989 urb = NULL;
2990 break;
2991
2992 // data overrun ... flush fifo?
2993 case -EOVERFLOW:
2994 dev->stats.rx_over_errors++;
2995 // FALLTHROUGH
2996
2997 default:
2998 entry->state = rx_cleanup;
2999 dev->stats.rx_errors++;
3000 if (netif_msg_rx_err (dev))
3001 devdbg (dev, "rx status %d", urb_status);
3002 break;
3003 }
3004
3005 defer_bh (dev, skb);
3006
3007 if (urb) {
3008 if (netif_running (dev->net)
3009 && !test_bit (EVENT_RX_HALT, &dev->flags)) {
3010 rx_submit (dev, urb, GFP_ATOMIC);
3011 return;
3012 }
3013 usb_free_urb (urb);
3014 }
3015 if (netif_msg_rx_err (dev))
3016 devdbg (dev, "no read resubmitted");
3017 }
3018
3019 static void intr_complete (struct urb *urb, struct pt_regs *regs)
3020 {
3021 struct usbnet *dev = urb->context;
3022 int status = urb->status;
3023
3024 switch (status) {
3025 /* success */
3026 case 0:
3027 dev->driver_info->status(dev, urb);
3028 break;
3029
3030 /* software-driven interface shutdown */
3031 case -ENOENT: // urb killed
3032 case -ESHUTDOWN: // hardware gone
3033 if (netif_msg_ifdown (dev))
3034 devdbg (dev, "intr shutdown, code %d", status);
3035 return;
3036
3037 /* NOTE: not throttling like RX/TX, since this endpoint
3038 * already polls infrequently
3039 */
3040 default:
3041 devdbg (dev, "intr status %d", status);
3042 break;
3043 }
3044
3045 if (!netif_running (dev->net))
3046 return;
3047
3048 memset(urb->transfer_buffer, 0, urb->transfer_buffer_length);
3049 status = usb_submit_urb (urb, GFP_ATOMIC);
3050 if (status != 0 && netif_msg_timer (dev))
3051 deverr(dev, "intr resubmit --> %d", status);
3052 }
3053
3054 /*-------------------------------------------------------------------------*/
3055
3056 // unlink pending rx/tx; completion handlers do all other cleanup
3057
3058 static int unlink_urbs (struct usbnet *dev, struct sk_buff_head *q)
3059 {
3060 unsigned long flags;
3061 struct sk_buff *skb, *skbnext;
3062 int count = 0;
3063
3064 spin_lock_irqsave (&q->lock, flags);
3065 for (skb = q->next; skb != (struct sk_buff *) q; skb = skbnext) {
3066 struct skb_data *entry;
3067 struct urb *urb;
3068 int retval;
3069
3070 entry = (struct skb_data *) skb->cb;
3071 urb = entry->urb;
3072 skbnext = skb->next;
3073
3074 // during some PM-driven resume scenarios,
3075 // these (async) unlinks complete immediately
3076 retval = usb_unlink_urb (urb);
3077 if (retval != -EINPROGRESS && retval != 0)
3078 devdbg (dev, "unlink urb err, %d", retval);
3079 else
3080 count++;
3081 }
3082 spin_unlock_irqrestore (&q->lock, flags);
3083 return count;
3084 }
3085
3086
3087 /*-------------------------------------------------------------------------*/
3088
3089 // precondition: never called in_interrupt
3090
3091 static int usbnet_stop (struct net_device *net)
3092 {
3093 struct usbnet *dev = netdev_priv(net);
3094 int temp;
3095 DECLARE_WAIT_QUEUE_HEAD (unlink_wakeup);
3096 DECLARE_WAITQUEUE (wait, current);
3097
3098 netif_stop_queue (net);
3099
3100 if (netif_msg_ifdown (dev))
3101 devinfo (dev, "stop stats: rx/tx %ld/%ld, errs %ld/%ld",
3102 dev->stats.rx_packets, dev->stats.tx_packets,
3103 dev->stats.rx_errors, dev->stats.tx_errors
3104 );
3105
3106 // ensure there are no more active urbs
3107 add_wait_queue (&unlink_wakeup, &wait);
3108 dev->wait = &unlink_wakeup;
3109 temp = unlink_urbs (dev, &dev->txq) + unlink_urbs (dev, &dev->rxq);
3110
3111 // maybe wait for deletions to finish.
3112 while (skb_queue_len (&dev->rxq)
3113 && skb_queue_len (&dev->txq)
3114 && skb_queue_len (&dev->done)) {
3115 msleep(UNLINK_TIMEOUT_MS);
3116 if (netif_msg_ifdown (dev))
3117 devdbg (dev, "waited for %d urb completions", temp);
3118 }
3119 dev->wait = NULL;
3120 remove_wait_queue (&unlink_wakeup, &wait);
3121
3122 usb_kill_urb(dev->interrupt);
3123
3124 /* deferred work (task, timer, softirq) must also stop.
3125 * can't flush_scheduled_work() until we drop rtnl (later),
3126 * else workers could deadlock; so make workers a NOP.
3127 */
3128 dev->flags = 0;
3129 del_timer_sync (&dev->delay);
3130 tasklet_kill (&dev->bh);
3131
3132 return 0;
3133 }
3134
3135 /*-------------------------------------------------------------------------*/
3136
3137 // posts reads, and enables write queuing
3138
3139 // precondition: never called in_interrupt
3140
3141 static int usbnet_open (struct net_device *net)
3142 {
3143 struct usbnet *dev = netdev_priv(net);
3144 int retval = 0;
3145 struct driver_info *info = dev->driver_info;
3146
3147 // put into "known safe" state
3148 if (info->reset && (retval = info->reset (dev)) < 0) {
3149 if (netif_msg_ifup (dev))
3150 devinfo (dev,
3151 "open reset fail (%d) usbnet usb-%s-%s, %s",
3152 retval,
3153 dev->udev->bus->bus_name, dev->udev->devpath,
3154 info->description);
3155 goto done;
3156 }
3157
3158 // insist peer be connected
3159 if (info->check_connect && (retval = info->check_connect (dev)) < 0) {
3160 if (netif_msg_ifup (dev))
3161 devdbg (dev, "can't open; %d", retval);
3162 goto done;
3163 }
3164
3165 /* start any status interrupt transfer */
3166 if (dev->interrupt) {
3167 retval = usb_submit_urb (dev->interrupt, GFP_KERNEL);
3168 if (retval < 0) {
3169 if (netif_msg_ifup (dev))
3170 deverr (dev, "intr submit %d", retval);
3171 goto done;
3172 }
3173 }
3174
3175 netif_start_queue (net);
3176 if (netif_msg_ifup (dev)) {
3177 char *framing;
3178
3179 if (dev->driver_info->flags & FLAG_FRAMING_NC)
3180 framing = "NetChip";
3181 else if (dev->driver_info->flags & FLAG_FRAMING_GL)
3182 framing = "GeneSys";
3183 else if (dev->driver_info->flags & FLAG_FRAMING_Z)
3184 framing = "Zaurus";
3185 else if (dev->driver_info->flags & FLAG_FRAMING_RN)
3186 framing = "RNDIS";
3187 else if (dev->driver_info->flags & FLAG_FRAMING_AX)
3188 framing = "ASIX";
3189 else
3190 framing = "simple";
3191
3192 devinfo (dev, "open: enable queueing "
3193 "(rx %d, tx %d) mtu %d %s framing",
3194 RX_QLEN (dev), TX_QLEN (dev), dev->net->mtu,
3195 framing);
3196 }
3197
3198 // delay posting reads until we're fully open
3199 tasklet_schedule (&dev->bh);
3200 done:
3201 return retval;
3202 }
3203
3204 /*-------------------------------------------------------------------------*/
3205
3206 static void usbnet_get_drvinfo (struct net_device *net, struct ethtool_drvinfo *info)
3207 {
3208 struct usbnet *dev = netdev_priv(net);
3209
3210 strncpy (info->driver, driver_name, sizeof info->driver);
3211 strncpy (info->version, DRIVER_VERSION, sizeof info->version);
3212 strncpy (info->fw_version, dev->driver_info->description,
3213 sizeof info->fw_version);
3214 usb_make_path (dev->udev, info->bus_info, sizeof info->bus_info);
3215 }
3216
3217 static u32 usbnet_get_link (struct net_device *net)
3218 {
3219 struct usbnet *dev = netdev_priv(net);
3220
3221 /* If a check_connect is defined, return it's results */
3222 if (dev->driver_info->check_connect)
3223 return dev->driver_info->check_connect (dev) == 0;
3224
3225 /* Otherwise, we're up to avoid breaking scripts */
3226 return 1;
3227 }
3228
3229 static u32 usbnet_get_msglevel (struct net_device *net)
3230 {
3231 struct usbnet *dev = netdev_priv(net);
3232
3233 return dev->msg_enable;
3234 }
3235
3236 static void usbnet_set_msglevel (struct net_device *net, u32 level)
3237 {
3238 struct usbnet *dev = netdev_priv(net);
3239
3240 dev->msg_enable = level;
3241 }
3242
3243 static int usbnet_ioctl (struct net_device *net, struct ifreq *rq, int cmd)
3244 {
3245 #ifdef NEED_MII
3246 {
3247 struct usbnet *dev = netdev_priv(net);
3248
3249 if (dev->mii.mdio_read != NULL && dev->mii.mdio_write != NULL)
3250 return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
3251 }
3252 #endif
3253 return -EOPNOTSUPP;
3254 }
3255
3256 /*-------------------------------------------------------------------------*/
3257
3258 /* work that cannot be done in interrupt context uses keventd.
3259 *
3260 * NOTE: with 2.5 we could do more of this using completion callbacks,
3261 * especially now that control transfers can be queued.
3262 */
3263 static void
3264 kevent (void *data)
3265 {
3266 struct usbnet *dev = data;
3267 int status;
3268
3269 /* usb_clear_halt() needs a thread context */
3270 if (test_bit (EVENT_TX_HALT, &dev->flags)) {
3271 unlink_urbs (dev, &dev->txq);
3272 status = usb_clear_halt (dev->udev, dev->out);
3273 if (status < 0 && status != -EPIPE) {
3274 if (netif_msg_tx_err (dev))
3275 deverr (dev, "can't clear tx halt, status %d",
3276 status);
3277 } else {
3278 clear_bit (EVENT_TX_HALT, &dev->flags);
3279 netif_wake_queue (dev->net);
3280 }
3281 }
3282 if (test_bit (EVENT_RX_HALT, &dev->flags)) {
3283 unlink_urbs (dev, &dev->rxq);
3284 status = usb_clear_halt (dev->udev, dev->in);
3285 if (status < 0 && status != -EPIPE) {
3286 if (netif_msg_rx_err (dev))
3287 deverr (dev, "can't clear rx halt, status %d",
3288 status);
3289 } else {
3290 clear_bit (EVENT_RX_HALT, &dev->flags);
3291 tasklet_schedule (&dev->bh);
3292 }
3293 }
3294
3295 /* tasklet could resubmit itself forever if memory is tight */
3296 if (test_bit (EVENT_RX_MEMORY, &dev->flags)) {
3297 struct urb *urb = NULL;
3298
3299 if (netif_running (dev->net))
3300 urb = usb_alloc_urb (0, GFP_KERNEL);
3301 else
3302 clear_bit (EVENT_RX_MEMORY, &dev->flags);
3303 if (urb != NULL) {
3304 clear_bit (EVENT_RX_MEMORY, &dev->flags);
3305 rx_submit (dev, urb, GFP_KERNEL);
3306 tasklet_schedule (&dev->bh);
3307 }
3308 }
3309
3310 if (dev->flags)
3311 devdbg (dev, "kevent done, flags = 0x%lx",
3312 dev->flags);
3313 }
3314
3315 /*-------------------------------------------------------------------------*/
3316
3317 static void tx_complete (struct urb *urb, struct pt_regs *regs)
3318 {
3319 struct sk_buff *skb = (struct sk_buff *) urb->context;
3320 struct skb_data *entry = (struct skb_data *) skb->cb;
3321 struct usbnet *dev = entry->dev;
3322
3323 if (urb->status == 0) {
3324 dev->stats.tx_packets++;
3325 dev->stats.tx_bytes += entry->length;
3326 } else {
3327 dev->stats.tx_errors++;
3328
3329 switch (urb->status) {
3330 case -EPIPE:
3331 defer_kevent (dev, EVENT_TX_HALT);
3332 break;
3333
3334 /* software-driven interface shutdown */
3335 case -ECONNRESET: // async unlink
3336 case -ESHUTDOWN: // hardware gone
3337 break;
3338
3339 // like rx, tx gets controller i/o faults during khubd delays
3340 // and so it uses the same throttling mechanism.
3341 case -EPROTO: // ehci
3342 case -ETIMEDOUT: // ohci
3343 case -EILSEQ: // uhci
3344 if (!timer_pending (&dev->delay)) {
3345 mod_timer (&dev->delay,
3346 jiffies + THROTTLE_JIFFIES);
3347 if (netif_msg_link (dev))
3348 devdbg (dev, "tx throttle %d",
3349 urb->status);
3350 }
3351 netif_stop_queue (dev->net);
3352 break;
3353 default:
3354 if (netif_msg_tx_err (dev))
3355 devdbg (dev, "tx err %d", entry->urb->status);
3356 break;
3357 }
3358 }
3359
3360 urb->dev = NULL;
3361 entry->state = tx_done;
3362 defer_bh (dev, skb);
3363 }
3364
3365 /*-------------------------------------------------------------------------*/
3366
3367 static void usbnet_tx_timeout (struct net_device *net)
3368 {
3369 struct usbnet *dev = netdev_priv(net);
3370
3371 unlink_urbs (dev, &dev->txq);
3372 tasklet_schedule (&dev->bh);
3373
3374 // FIXME: device recovery -- reset?
3375 }
3376
3377 /*-------------------------------------------------------------------------*/
3378
3379 static int usbnet_start_xmit (struct sk_buff *skb, struct net_device *net)
3380 {
3381 struct usbnet *dev = netdev_priv(net);
3382 int length;
3383 int retval = NET_XMIT_SUCCESS;
3384 struct urb *urb = NULL;
3385 struct skb_data *entry;
3386 struct driver_info *info = dev->driver_info;
3387 unsigned long flags;
3388 #ifdef CONFIG_USB_NET1080
3389 struct nc_header *header = NULL;
3390 struct nc_trailer *trailer = NULL;
3391 #endif /* CONFIG_USB_NET1080 */
3392
3393 // some devices want funky USB-level framing, for
3394 // win32 driver (usually) and/or hardware quirks
3395 if (info->tx_fixup) {
3396 skb = info->tx_fixup (dev, skb, GFP_ATOMIC);
3397 if (!skb) {
3398 if (netif_msg_tx_err (dev))
3399 devdbg (dev, "can't tx_fixup skb");
3400 goto drop;
3401 }
3402 }
3403 length = skb->len;
3404
3405 if (!(urb = usb_alloc_urb (0, GFP_ATOMIC))) {
3406 if (netif_msg_tx_err (dev))
3407 devdbg (dev, "no urb");
3408 goto drop;
3409 }
3410
3411 entry = (struct skb_data *) skb->cb;
3412 entry->urb = urb;
3413 entry->dev = dev;
3414 entry->state = tx_start;
3415 entry->length = length;
3416
3417 // FIXME: reorganize a bit, so that fixup() fills out NetChip
3418 // framing too. (Packet ID update needs the spinlock...)
3419 // [ BETTER: we already own net->xmit_lock, that's enough ]
3420
3421 #ifdef CONFIG_USB_NET1080
3422 if (info->flags & FLAG_FRAMING_NC) {
3423 header = (struct nc_header *) skb_push (skb, sizeof *header);
3424 header->hdr_len = cpu_to_le16 (sizeof (*header));
3425 header->packet_len = cpu_to_le16 (length);
3426 if (!((skb->len + sizeof *trailer) & 0x01))
3427 *skb_put (skb, 1) = PAD_BYTE;
3428 trailer = (struct nc_trailer *) skb_put (skb, sizeof *trailer);
3429 }
3430 #endif /* CONFIG_USB_NET1080 */
3431
3432 usb_fill_bulk_urb (urb, dev->udev, dev->out,
3433 skb->data, skb->len, tx_complete, skb);
3434 urb->transfer_flags |= URB_ASYNC_UNLINK;
3435
3436 /* don't assume the hardware handles USB_ZERO_PACKET
3437 * NOTE: strictly conforming cdc-ether devices should expect
3438 * the ZLP here, but ignore the one-byte packet.
3439 *
3440 * FIXME zero that byte, if it doesn't require a new skb.
3441 */
3442 if ((length % dev->maxpacket) == 0)
3443 urb->transfer_buffer_length++;
3444
3445 spin_lock_irqsave (&dev->txq.lock, flags);
3446
3447 #ifdef CONFIG_USB_NET1080
3448 if (info->flags & FLAG_FRAMING_NC) {
3449 header->packet_id = cpu_to_le16 ((u16)dev->dev_packet_id++);
3450 put_unaligned (header->packet_id, &trailer->packet_id);
3451 #if 0
3452 devdbg (dev, "frame >tx h %d p %d id %d",
3453 header->hdr_len, header->packet_len,
3454 header->packet_id);
3455 #endif
3456 }
3457 #endif /* CONFIG_USB_NET1080 */
3458
3459 switch ((retval = usb_submit_urb (urb, GFP_ATOMIC))) {
3460 case -EPIPE:
3461 netif_stop_queue (net);
3462 defer_kevent (dev, EVENT_TX_HALT);
3463 break;
3464 default:
3465 if (netif_msg_tx_err (dev))
3466 devdbg (dev, "tx: submit urb err %d", retval);
3467 break;
3468 case 0:
3469 net->trans_start = jiffies;
3470 __skb_queue_tail (&dev->txq, skb);
3471 if (dev->txq.qlen >= TX_QLEN (dev))
3472 netif_stop_queue (net);
3473 }
3474 spin_unlock_irqrestore (&dev->txq.lock, flags);
3475
3476 if (retval) {
3477 if (netif_msg_tx_err (dev))
3478 devdbg (dev, "drop, code %d", retval);
3479 drop:
3480 retval = NET_XMIT_SUCCESS;
3481 dev->stats.tx_dropped++;
3482 if (skb)
3483 dev_kfree_skb_any (skb);
3484 usb_free_urb (urb);
3485 } else if (netif_msg_tx_queued (dev)) {
3486 devdbg (dev, "> tx, len %d, type 0x%x",
3487 length, skb->protocol);
3488 }
3489 return retval;
3490 }
3491
3492
3493 /*-------------------------------------------------------------------------*/
3494
3495 // tasklet (work deferred from completions, in_irq) or timer
3496
3497 static void usbnet_bh (unsigned long param)
3498 {
3499 struct usbnet *dev = (struct usbnet *) param;
3500 struct sk_buff *skb;
3501 struct skb_data *entry;
3502
3503 while ((skb = skb_dequeue (&dev->done))) {
3504 entry = (struct skb_data *) skb->cb;
3505 switch (entry->state) {
3506 case rx_done:
3507 entry->state = rx_cleanup;
3508 rx_process (dev, skb);
3509 continue;
3510 case tx_done:
3511 case rx_cleanup:
3512 usb_free_urb (entry->urb);
3513 dev_kfree_skb (skb);
3514 continue;
3515 default:
3516 devdbg (dev, "bogus skb state %d", entry->state);
3517 }
3518 }
3519
3520 // waiting for all pending urbs to complete?
3521 if (dev->wait) {
3522 if ((dev->txq.qlen + dev->rxq.qlen + dev->done.qlen) == 0) {
3523 wake_up (dev->wait);
3524 }
3525
3526 // or are we maybe short a few urbs?
3527 } else if (netif_running (dev->net)
3528 && netif_device_present (dev->net)
3529 && !timer_pending (&dev->delay)
3530 && !test_bit (EVENT_RX_HALT, &dev->flags)) {
3531 int temp = dev->rxq.qlen;
3532 int qlen = RX_QLEN (dev);
3533
3534 if (temp < qlen) {
3535 struct urb *urb;
3536 int i;
3537
3538 // don't refill the queue all at once
3539 for (i = 0; i < 10 && dev->rxq.qlen < qlen; i++) {
3540 urb = usb_alloc_urb (0, GFP_ATOMIC);
3541 if (urb != NULL)
3542 rx_submit (dev, urb, GFP_ATOMIC);
3543 }
3544 if (temp != dev->rxq.qlen && netif_msg_link (dev))
3545 devdbg (dev, "rxqlen %d --> %d",
3546 temp, dev->rxq.qlen);
3547 if (dev->rxq.qlen < qlen)
3548 tasklet_schedule (&dev->bh);
3549 }
3550 if (dev->txq.qlen < TX_QLEN (dev))
3551 netif_wake_queue (dev->net);
3552 }
3553 }
3554
3555
3556 \f
3557 /*-------------------------------------------------------------------------
3558 *
3559 * USB Device Driver support
3560 *
3561 *-------------------------------------------------------------------------*/
3562
3563 // precondition: never called in_interrupt
3564
3565 static void usbnet_disconnect (struct usb_interface *intf)
3566 {
3567 struct usbnet *dev;
3568 struct usb_device *xdev;
3569 struct net_device *net;
3570
3571 dev = usb_get_intfdata(intf);
3572 usb_set_intfdata(intf, NULL);
3573 if (!dev)
3574 return;
3575
3576 xdev = interface_to_usbdev (intf);
3577
3578 if (netif_msg_probe (dev))
3579 devinfo (dev, "unregister usbnet usb-%s-%s, %s",
3580 xdev->bus->bus_name, xdev->devpath,
3581 dev->driver_info->description);
3582
3583 net = dev->net;
3584 unregister_netdev (net);
3585
3586 /* we don't hold rtnl here ... */
3587 flush_scheduled_work ();
3588
3589 if (dev->driver_info->unbind)
3590 dev->driver_info->unbind (dev, intf);
3591
3592 free_netdev(net);
3593 usb_put_dev (xdev);
3594 }
3595
3596
3597 /*-------------------------------------------------------------------------*/
3598
3599 static struct ethtool_ops usbnet_ethtool_ops;
3600
3601 // precondition: never called in_interrupt
3602
3603 static int
3604 usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod)
3605 {
3606 struct usbnet *dev;
3607 struct net_device *net;
3608 struct usb_host_interface *interface;
3609 struct driver_info *info;
3610 struct usb_device *xdev;
3611 int status;
3612
3613 info = (struct driver_info *) prod->driver_info;
3614 if (!info) {
3615 dev_dbg (&udev->dev, "blacklisted by %s\n", driver_name);
3616 return -ENODEV;
3617 }
3618 xdev = interface_to_usbdev (udev);
3619 interface = udev->cur_altsetting;
3620
3621 usb_get_dev (xdev);
3622
3623 status = -ENOMEM;
3624
3625 // set up our own records
3626 net = alloc_etherdev(sizeof(*dev));
3627 if (!net) {
3628 dbg ("can't kmalloc dev");
3629 goto out;
3630 }
3631
3632 dev = netdev_priv(net);
3633 dev->udev = xdev;
3634 dev->driver_info = info;
3635 dev->msg_enable = netif_msg_init (msg_level, NETIF_MSG_DRV
3636 | NETIF_MSG_PROBE | NETIF_MSG_LINK);
3637 skb_queue_head_init (&dev->rxq);
3638 skb_queue_head_init (&dev->txq);
3639 skb_queue_head_init (&dev->done);
3640 dev->bh.func = usbnet_bh;
3641 dev->bh.data = (unsigned long) dev;
3642 INIT_WORK (&dev->kevent, kevent, dev);
3643 dev->delay.function = usbnet_bh;
3644 dev->delay.data = (unsigned long) dev;
3645 init_timer (&dev->delay);
3646
3647 SET_MODULE_OWNER (net);
3648 dev->net = net;
3649 strcpy (net->name, "usb%d");
3650 memcpy (net->dev_addr, node_id, sizeof node_id);
3651
3652 #if 0
3653 // dma_supported() is deeply broken on almost all architectures
3654 // possible with some EHCI controllers
3655 if (dma_supported (&udev->dev, DMA_64BIT_MASK))
3656 net->features |= NETIF_F_HIGHDMA;
3657 #endif
3658
3659 net->change_mtu = usbnet_change_mtu;
3660 net->get_stats = usbnet_get_stats;
3661 net->hard_start_xmit = usbnet_start_xmit;
3662 net->open = usbnet_open;
3663 net->stop = usbnet_stop;
3664 net->watchdog_timeo = TX_TIMEOUT_JIFFIES;
3665 net->tx_timeout = usbnet_tx_timeout;
3666 net->do_ioctl = usbnet_ioctl;
3667 net->ethtool_ops = &usbnet_ethtool_ops;
3668
3669 // allow device-specific bind/init procedures
3670 // NOTE net->name still not usable ...
3671 if (info->bind) {
3672 status = info->bind (dev, udev);
3673 // heuristic: "usb%d" for links we know are two-host,
3674 // else "eth%d" when there's reasonable doubt. userspace
3675 // can rename the link if it knows better.
3676 if ((dev->driver_info->flags & FLAG_ETHER) != 0
3677 && (net->dev_addr [0] & 0x02) == 0)
3678 strcpy (net->name, "eth%d");
3679 } else if (!info->in || info->out)
3680 status = get_endpoints (dev, udev);
3681 else {
3682 dev->in = usb_rcvbulkpipe (xdev, info->in);
3683 dev->out = usb_sndbulkpipe (xdev, info->out);
3684 if (!(info->flags & FLAG_NO_SETINT))
3685 status = usb_set_interface (xdev,
3686 interface->desc.bInterfaceNumber,
3687 interface->desc.bAlternateSetting);
3688 else
3689 status = 0;
3690
3691 }
3692
3693 if (status == 0 && dev->status)
3694 status = init_status (dev, udev);
3695 if (status < 0)
3696 goto out1;
3697
3698 dev->maxpacket = usb_maxpacket (dev->udev, dev->out, 1);
3699
3700 SET_NETDEV_DEV(net, &udev->dev);
3701 status = register_netdev (net);
3702 if (status)
3703 goto out3;
3704 if (netif_msg_probe (dev))
3705 devinfo (dev, "register usbnet at usb-%s-%s, %s, "
3706 "%02x:%02x:%02x:%02x:%02x:%02x",
3707 xdev->bus->bus_name, xdev->devpath,
3708 dev->driver_info->description,
3709 net->dev_addr [0], net->dev_addr [1],
3710 net->dev_addr [2], net->dev_addr [3],
3711 net->dev_addr [4], net->dev_addr [5]);
3712
3713 // ok, it's ready to go.
3714 usb_set_intfdata (udev, dev);
3715
3716 // start as if the link is up
3717 netif_device_attach (net);
3718
3719 return 0;
3720
3721 out3:
3722 if (info->unbind)
3723 info->unbind (dev, udev);
3724 out1:
3725 free_netdev(net);
3726 out:
3727 usb_put_dev(xdev);
3728 return status;
3729 }
3730
3731 /*-------------------------------------------------------------------------*/
3732
3733 #ifdef CONFIG_PM
3734
3735 static int usbnet_suspend (struct usb_interface *intf, u32 state)
3736 {
3737 struct usbnet *dev = usb_get_intfdata(intf);
3738
3739 netif_device_detach (dev->net);
3740 return 0;
3741 }
3742
3743 static int usbnet_resume (struct usb_interface *intf)
3744 {
3745 struct usbnet *dev = usb_get_intfdata(intf);
3746
3747 netif_device_attach (dev->net);
3748 return 0;
3749 }
3750
3751 #else /* !CONFIG_PM */
3752
3753 #define usbnet_suspend NULL
3754 #define usbnet_resume NULL
3755
3756 #endif /* CONFIG_PM */
3757
3758 /*-------------------------------------------------------------------------*/
3759
3760 #ifndef HAVE_HARDWARE
3761 #error You need to configure some hardware for this driver
3762 #endif
3763
3764 /*
3765 * chip vendor names won't normally be on the cables, and
3766 * may not be on the device.
3767 */
3768
3769 static const struct usb_device_id products [] = {
3770
3771 #ifdef CONFIG_USB_ALI_M5632
3772 {
3773 USB_DEVICE (0x0402, 0x5632), // ALi defaults
3774 .driver_info = (unsigned long) &ali_m5632_info,
3775 },
3776 #endif
3777
3778 #ifdef CONFIG_USB_AN2720
3779 {
3780 USB_DEVICE (0x0547, 0x2720), // AnchorChips defaults
3781 .driver_info = (unsigned long) &an2720_info,
3782 }, {
3783 USB_DEVICE (0x0547, 0x2727), // Xircom PGUNET
3784 .driver_info = (unsigned long) &an2720_info,
3785 },
3786 #endif
3787
3788 #ifdef CONFIG_USB_BELKIN
3789 {
3790 USB_DEVICE (0x050d, 0x0004), // Belkin
3791 .driver_info = (unsigned long) &belkin_info,
3792 }, {
3793 USB_DEVICE (0x056c, 0x8100), // eTEK
3794 .driver_info = (unsigned long) &belkin_info,
3795 }, {
3796 USB_DEVICE (0x0525, 0x9901), // Advance USBNET (eTEK)
3797 .driver_info = (unsigned long) &belkin_info,
3798 },
3799 #endif
3800
3801 #ifdef CONFIG_USB_AX8817X
3802 {
3803 // Linksys USB200M
3804 USB_DEVICE (0x077b, 0x2226),
3805 .driver_info = (unsigned long) &ax8817x_info,
3806 }, {
3807 // Netgear FA120
3808 USB_DEVICE (0x0846, 0x1040),
3809 .driver_info = (unsigned long) &netgear_fa120_info,
3810 }, {
3811 // DLink DUB-E100
3812 USB_DEVICE (0x2001, 0x1a00),
3813 .driver_info = (unsigned long) &dlink_dub_e100_info,
3814 }, {
3815 // Intellinet, ST Lab USB Ethernet
3816 USB_DEVICE (0x0b95, 0x1720),
3817 .driver_info = (unsigned long) &ax8817x_info,
3818 }, {
3819 // Hawking UF200, TrendNet TU2-ET100
3820 USB_DEVICE (0x07b8, 0x420a),
3821 .driver_info = (unsigned long) &hawking_uf200_info,
3822 }, {
3823 // Billionton Systems, USB2AR
3824 USB_DEVICE (0x08dd, 0x90ff),
3825 .driver_info = (unsigned long) &ax8817x_info,
3826 }, {
3827 // ATEN UC210T
3828 USB_DEVICE (0x0557, 0x2009),
3829 .driver_info = (unsigned long) &ax8817x_info,
3830 }, {
3831 // Buffalo LUA-U2-KTX
3832 USB_DEVICE (0x0411, 0x003d),
3833 .driver_info = (unsigned long) &ax8817x_info,
3834 }, {
3835 // Sitecom LN-029 "USB 2.0 10/100 Ethernet adapter"
3836 USB_DEVICE (0x6189, 0x182d),
3837 .driver_info = (unsigned long) &ax8817x_info,
3838 }, {
3839 // corega FEther USB2-TX
3840 USB_DEVICE (0x07aa, 0x0017),
3841 .driver_info = (unsigned long) &ax8817x_info,
3842 }, {
3843 // Surecom EP-1427X-2
3844 USB_DEVICE (0x1189, 0x0893),
3845 .driver_info = (unsigned long) &ax8817x_info,
3846 }, {
3847 // goodway corp usb gwusb2e
3848 USB_DEVICE (0x1631, 0x6200),
3849 .driver_info = (unsigned long) &ax8817x_info,
3850 }, {
3851 // ASIX AX88772 10/100
3852 USB_DEVICE (0x0b95, 0x7720),
3853 .driver_info = (unsigned long) &ax88772_info,
3854 },
3855 #endif
3856
3857 #ifdef CONFIG_USB_EPSON2888
3858 {
3859 USB_DEVICE (0x0525, 0x2888), // EPSON USB client
3860 .driver_info = (unsigned long) &epson2888_info,
3861 },
3862 #endif
3863
3864 #ifdef CONFIG_USB_GENESYS
3865 {
3866 USB_DEVICE (0x05e3, 0x0502), // GL620USB-A
3867 .driver_info = (unsigned long) &genelink_info,
3868 },
3869 /* NOT: USB_DEVICE (0x05e3, 0x0501), // GL620USB
3870 * that's half duplex, not currently supported
3871 */
3872 #endif
3873
3874 #ifdef CONFIG_USB_NET1080
3875 {
3876 USB_DEVICE (0x0525, 0x1080), // NetChip ref design
3877 .driver_info = (unsigned long) &net1080_info,
3878 }, {
3879 USB_DEVICE (0x06D0, 0x0622), // Laplink Gold
3880 .driver_info = (unsigned long) &net1080_info,
3881 },
3882 #endif
3883
3884 #ifdef CONFIG_USB_PL2301
3885 {
3886 USB_DEVICE (0x067b, 0x0000), // PL-2301
3887 .driver_info = (unsigned long) &prolific_info,
3888 }, {
3889 USB_DEVICE (0x067b, 0x0001), // PL-2302
3890 .driver_info = (unsigned long) &prolific_info,
3891 },
3892 #endif
3893
3894 #ifdef CONFIG_USB_KC2190
3895 {
3896 USB_DEVICE (0x050f, 0x0190), // KC-190
3897 .driver_info = (unsigned long) &kc2190_info,
3898 },
3899 #endif
3900
3901 #ifdef CONFIG_USB_RNDIS
3902 {
3903 /* RNDIS is MSFT's un-official variant of CDC ACM */
3904 USB_INTERFACE_INFO (USB_CLASS_COMM, 2 /* ACM */, 0x0ff),
3905 .driver_info = (unsigned long) &rndis_info,
3906 },
3907 #endif
3908
3909 #ifdef CONFIG_USB_ARMLINUX
3910 /*
3911 * SA-1100 using standard ARM Linux kernels, or compatible.
3912 * Often used when talking to Linux PDAs (iPaq, Yopy, etc).
3913 * The sa-1100 "usb-eth" driver handles the basic framing.
3914 *
3915 * PXA25x or PXA210 ... these use a "usb-eth" driver much like
3916 * the sa1100 one, but hardware uses different endpoint numbers.
3917 *
3918 * Or the Linux "Ethernet" gadget on hardware that can't talk
3919 * CDC Ethernet (e.g., no altsettings), in either of two modes:
3920 * - acting just like the old "usb-eth" firmware, though
3921 * the implementation is different
3922 * - supporting RNDIS as the first/default configuration for
3923 * MS-Windows interop; Linux needs to use the other config
3924 */
3925 {
3926 // 1183 = 0x049F, both used as hex values?
3927 // Compaq "Itsy" vendor/product id
3928 USB_DEVICE (0x049F, 0x505A), // usb-eth, or compatible
3929 .driver_info = (unsigned long) &linuxdev_info,
3930 }, {
3931 USB_DEVICE (0x0E7E, 0x1001), // G.Mate "Yopy"
3932 .driver_info = (unsigned long) &yopy_info,
3933 }, {
3934 USB_DEVICE (0x8086, 0x07d3), // "blob" bootloader
3935 .driver_info = (unsigned long) &blob_info,
3936 }, {
3937 // Linux Ethernet/RNDIS gadget on pxa210/25x/26x
3938 // e.g. Gumstix, current OpenZaurus, ...
3939 USB_DEVICE_VER (0x0525, 0xa4a2, 0x0203, 0x0203),
3940 .driver_info = (unsigned long) &linuxdev_info,
3941 },
3942 #endif
3943
3944 #if defined(CONFIG_USB_ZAURUS) || defined(CONFIG_USB_CDCETHER)
3945 /*
3946 * SA-1100 based Sharp Zaurus ("collie"), or compatible.
3947 * Same idea as above, but different framing.
3948 *
3949 * PXA-2xx based models are also lying-about-cdc.
3950 * Some models don't even tell the same lies ...
3951 *
3952 * NOTE: OpenZaurus versions with 2.6 kernels won't use these entries,
3953 * unlike the older ones with 2.4 "embedix" kernels.
3954 *
3955 * NOTE: These entries do double-duty, serving as blacklist entries
3956 * whenever Zaurus support isn't enabled, but CDC Ethernet is.
3957 */
3958 #define ZAURUS_MASTER_INTERFACE \
3959 .bInterfaceClass = USB_CLASS_COMM, \
3960 .bInterfaceSubClass = USB_CDC_SUBCLASS_ETHERNET, \
3961 .bInterfaceProtocol = USB_CDC_PROTO_NONE
3962 {
3963 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3964 | USB_DEVICE_ID_MATCH_DEVICE,
3965 .idVendor = 0x04DD,
3966 .idProduct = 0x8004,
3967 ZAURUS_MASTER_INTERFACE,
3968 .driver_info = ZAURUS_STRONGARM_INFO,
3969 }, {
3970 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3971 | USB_DEVICE_ID_MATCH_DEVICE,
3972 .idVendor = 0x04DD,
3973 .idProduct = 0x8005, /* A-300 */
3974 ZAURUS_MASTER_INTERFACE,
3975 .driver_info = ZAURUS_PXA_INFO,
3976 }, {
3977 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3978 | USB_DEVICE_ID_MATCH_DEVICE,
3979 .idVendor = 0x04DD,
3980 .idProduct = 0x8006, /* B-500/SL-5600 */
3981 ZAURUS_MASTER_INTERFACE,
3982 .driver_info = ZAURUS_PXA_INFO,
3983 }, {
3984 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3985 | USB_DEVICE_ID_MATCH_DEVICE,
3986 .idVendor = 0x04DD,
3987 .idProduct = 0x8007, /* C-700 */
3988 ZAURUS_MASTER_INTERFACE,
3989 .driver_info = ZAURUS_PXA_INFO,
3990 }, {
3991 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3992 | USB_DEVICE_ID_MATCH_DEVICE,
3993 .idVendor = 0x04DD,
3994 .idProduct = 0x9031, /* C-750 C-760 */
3995 ZAURUS_MASTER_INTERFACE,
3996 .driver_info = ZAURUS_PXA_INFO,
3997 }, {
3998 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3999 | USB_DEVICE_ID_MATCH_DEVICE,
4000 .idVendor = 0x04DD,
4001 .idProduct = 0x9032, /* SL-6000 */
4002 ZAURUS_MASTER_INTERFACE,
4003 .driver_info = ZAURUS_PXA_INFO,
4004 }, {
4005 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
4006 | USB_DEVICE_ID_MATCH_DEVICE,
4007 .idVendor = 0x04DD,
4008 /* reported with some C860 units */
4009 .idProduct = 0x9050, /* C-860 */
4010 ZAURUS_MASTER_INTERFACE,
4011 .driver_info = ZAURUS_PXA_INFO,
4012 #ifdef CONFIG_USB_ZAURUS
4013 /* at least some (reports vary) C-860 units have very different
4014 * lies about their standards support.
4015 */
4016 }, {
4017 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
4018 | USB_DEVICE_ID_MATCH_DEVICE,
4019 .idVendor = 0x04DD,
4020 /* reported with some C860 units */
4021 .idProduct = 0x9031, /* C-860 */
4022 .bInterfaceClass = USB_CLASS_COMM,
4023 .bInterfaceSubClass = USB_CDC_SUBCLASS_MDLM,
4024 .bInterfaceProtocol = USB_CDC_PROTO_NONE,
4025 .driver_info = (unsigned long) &zaurus_pxa_mdlm_info,
4026 #endif
4027 },
4028
4029 /* Olympus has some models with a Zaurus-compatible option.
4030 * R-1000 uses a FreeScale i.MXL cpu (ARMv4T)
4031 */
4032 {
4033 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
4034 | USB_DEVICE_ID_MATCH_DEVICE,
4035 .idVendor = 0x07B4,
4036 .idProduct = 0x0F02, /* R-1000 */
4037 ZAURUS_MASTER_INTERFACE,
4038 .driver_info = OLYMPUS_MXL_INFO,
4039 },
4040 #endif
4041
4042 #ifdef CONFIG_USB_CDCETHER
4043 {
4044 /* CDC Ether uses two interfaces, not necessarily consecutive.
4045 * We match the main interface, ignoring the optional device
4046 * class so we could handle devices that aren't exclusively
4047 * CDC ether.
4048 *
4049 * NOTE: this match must come AFTER entries working around
4050 * bugs/quirks in a given product (like Zaurus, above).
4051 */
4052 USB_INTERFACE_INFO (USB_CLASS_COMM, USB_CDC_SUBCLASS_ETHERNET,
4053 USB_CDC_PROTO_NONE),
4054 .driver_info = (unsigned long) &cdc_info,
4055 },
4056 #endif
4057
4058 { }, // END
4059 };
4060 MODULE_DEVICE_TABLE (usb, products);
4061
4062 static struct usb_driver usbnet_driver = {
4063 .owner = THIS_MODULE,
4064 .name = driver_name,
4065 .id_table = products,
4066 .probe = usbnet_probe,
4067 .disconnect = usbnet_disconnect,
4068 .suspend = usbnet_suspend,
4069 .resume = usbnet_resume,
4070 };
4071
4072 /* Default ethtool_ops assigned. Devices can override in their bind() routine */
4073 static struct ethtool_ops usbnet_ethtool_ops = {
4074 .get_drvinfo = usbnet_get_drvinfo,
4075 .get_link = usbnet_get_link,
4076 .get_msglevel = usbnet_get_msglevel,
4077 .set_msglevel = usbnet_set_msglevel,
4078 };
4079
4080 /*-------------------------------------------------------------------------*/
4081
4082 static int __init usbnet_init (void)
4083 {
4084 // compiler should optimize these out
4085 BUG_ON (sizeof (((struct sk_buff *)0)->cb)
4086 < sizeof (struct skb_data));
4087 #ifdef CONFIG_USB_CDCETHER
4088 BUG_ON ((sizeof (((struct usbnet *)0)->data)
4089 < sizeof (struct cdc_state)));
4090 #endif
4091
4092 random_ether_addr(node_id);
4093
4094 return usb_register(&usbnet_driver);
4095 }
4096 module_init (usbnet_init);
4097
4098 static void __exit usbnet_exit (void)
4099 {
4100 usb_deregister (&usbnet_driver);
4101 }
4102 module_exit (usbnet_exit);
4103
4104 MODULE_AUTHOR ("David Brownell <dbrownell@users.sourceforge.net>");
4105 MODULE_DESCRIPTION ("USB Host-to-Host Link Drivers (numerous vendors)");
4106 MODULE_LICENSE ("GPL");
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