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1da177e4 LT |
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"); |