Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * ether.c -- Ethernet gadget driver, with CDC and non-CDC options | |
3 | * | |
4 | * Copyright (C) 2003-2005 David Brownell | |
5 | * Copyright (C) 2003-2004 Robert Schwebel, Benedikt Spranger | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
20 | */ | |
21 | ||
22 | ||
23 | // #define DEBUG 1 | |
24 | // #define VERBOSE | |
25 | ||
1da177e4 LT |
26 | #include <linux/module.h> |
27 | #include <linux/kernel.h> | |
28 | #include <linux/delay.h> | |
29 | #include <linux/ioport.h> | |
30 | #include <linux/sched.h> | |
31 | #include <linux/slab.h> | |
32 | #include <linux/smp_lock.h> | |
33 | #include <linux/errno.h> | |
34 | #include <linux/init.h> | |
35 | #include <linux/timer.h> | |
36 | #include <linux/list.h> | |
37 | #include <linux/interrupt.h> | |
38 | #include <linux/utsname.h> | |
39 | #include <linux/device.h> | |
40 | #include <linux/moduleparam.h> | |
41 | #include <linux/ctype.h> | |
42 | ||
43 | #include <asm/byteorder.h> | |
44 | #include <asm/io.h> | |
45 | #include <asm/irq.h> | |
46 | #include <asm/system.h> | |
47 | #include <asm/uaccess.h> | |
48 | #include <asm/unaligned.h> | |
49 | ||
50 | #include <linux/usb_ch9.h> | |
a8c28f23 | 51 | #include <linux/usb/cdc.h> |
1da177e4 LT |
52 | #include <linux/usb_gadget.h> |
53 | ||
54 | #include <linux/random.h> | |
55 | #include <linux/netdevice.h> | |
56 | #include <linux/etherdevice.h> | |
57 | #include <linux/ethtool.h> | |
58 | ||
59 | #include "gadget_chips.h" | |
60 | ||
61 | /*-------------------------------------------------------------------------*/ | |
62 | ||
63 | /* | |
64 | * Ethernet gadget driver -- with CDC and non-CDC options | |
65 | * Builds on hardware support for a full duplex link. | |
66 | * | |
67 | * CDC Ethernet is the standard USB solution for sending Ethernet frames | |
68 | * using USB. Real hardware tends to use the same framing protocol but look | |
69 | * different for control features. This driver strongly prefers to use | |
70 | * this USB-IF standard as its open-systems interoperability solution; | |
71 | * most host side USB stacks (except from Microsoft) support it. | |
72 | * | |
73 | * There's some hardware that can't talk CDC. We make that hardware | |
74 | * implement a "minimalist" vendor-agnostic CDC core: same framing, but | |
75 | * link-level setup only requires activating the configuration. | |
76 | * Linux supports it, but other host operating systems may not. | |
77 | * (This is a subset of CDC Ethernet.) | |
78 | * | |
79 | * A third option is also in use. Rather than CDC Ethernet, or something | |
80 | * simpler, Microsoft pushes their own approach: RNDIS. The published | |
81 | * RNDIS specs are ambiguous and appear to be incomplete, and are also | |
82 | * needlessly complex. | |
83 | */ | |
84 | ||
85 | #define DRIVER_DESC "Ethernet Gadget" | |
907cba35 | 86 | #define DRIVER_VERSION "May Day 2005" |
1da177e4 LT |
87 | |
88 | static const char shortname [] = "ether"; | |
89 | static const char driver_desc [] = DRIVER_DESC; | |
90 | ||
91 | #define RX_EXTRA 20 /* guard against rx overflows */ | |
92 | ||
1da177e4 | 93 | #include "rndis.h" |
45e45ab4 DB |
94 | |
95 | #ifndef CONFIG_USB_ETH_RNDIS | |
96 | #define rndis_uninit(x) do{}while(0) | |
97 | #define rndis_deregister(c) do{}while(0) | |
98 | #define rndis_exit() do{}while(0) | |
1da177e4 LT |
99 | #endif |
100 | ||
101 | /* CDC and RNDIS support the same host-chosen outgoing packet filters. */ | |
102 | #define DEFAULT_FILTER (USB_CDC_PACKET_TYPE_BROADCAST \ | |
7e27f18c DB |
103 | |USB_CDC_PACKET_TYPE_ALL_MULTICAST \ |
104 | |USB_CDC_PACKET_TYPE_PROMISCUOUS \ | |
105 | |USB_CDC_PACKET_TYPE_DIRECTED) | |
1da177e4 LT |
106 | |
107 | ||
108 | /*-------------------------------------------------------------------------*/ | |
109 | ||
110 | struct eth_dev { | |
111 | spinlock_t lock; | |
112 | struct usb_gadget *gadget; | |
113 | struct usb_request *req; /* for control responses */ | |
114 | struct usb_request *stat_req; /* for cdc & rndis status */ | |
115 | ||
116 | u8 config; | |
117 | struct usb_ep *in_ep, *out_ep, *status_ep; | |
118 | const struct usb_endpoint_descriptor | |
119 | *in, *out, *status; | |
120 | struct list_head tx_reqs, rx_reqs; | |
121 | ||
122 | struct net_device *net; | |
123 | struct net_device_stats stats; | |
124 | atomic_t tx_qlen; | |
125 | ||
126 | struct work_struct work; | |
127 | unsigned zlp:1; | |
128 | unsigned cdc:1; | |
129 | unsigned rndis:1; | |
130 | unsigned suspended:1; | |
131 | u16 cdc_filter; | |
132 | unsigned long todo; | |
133 | #define WORK_RX_MEMORY 0 | |
134 | int rndis_config; | |
135 | u8 host_mac [ETH_ALEN]; | |
136 | }; | |
137 | ||
138 | /* This version autoconfigures as much as possible at run-time. | |
139 | * | |
140 | * It also ASSUMES a self-powered device, without remote wakeup, | |
141 | * although remote wakeup support would make sense. | |
142 | */ | |
1da177e4 LT |
143 | |
144 | /*-------------------------------------------------------------------------*/ | |
145 | ||
146 | /* DO NOT REUSE THESE IDs with a protocol-incompatible driver!! Ever!! | |
147 | * Instead: allocate your own, using normal USB-IF procedures. | |
148 | */ | |
149 | ||
150 | /* Thanks to NetChip Technologies for donating this product ID. | |
151 | * It's for devices with only CDC Ethernet configurations. | |
152 | */ | |
153 | #define CDC_VENDOR_NUM 0x0525 /* NetChip */ | |
154 | #define CDC_PRODUCT_NUM 0xa4a1 /* Linux-USB Ethernet Gadget */ | |
155 | ||
156 | /* For hardware that can't talk CDC, we use the same vendor ID that | |
157 | * ARM Linux has used for ethernet-over-usb, both with sa1100 and | |
158 | * with pxa250. We're protocol-compatible, if the host-side drivers | |
159 | * use the endpoint descriptors. bcdDevice (version) is nonzero, so | |
160 | * drivers that need to hard-wire endpoint numbers have a hook. | |
161 | * | |
162 | * The protocol is a minimal subset of CDC Ether, which works on any bulk | |
163 | * hardware that's not deeply broken ... even on hardware that can't talk | |
164 | * RNDIS (like SA-1100, with no interrupt endpoint, or anything that | |
165 | * doesn't handle control-OUT). | |
166 | */ | |
167 | #define SIMPLE_VENDOR_NUM 0x049f | |
168 | #define SIMPLE_PRODUCT_NUM 0x505a | |
169 | ||
170 | /* For hardware that can talk RNDIS and either of the above protocols, | |
171 | * use this ID ... the windows INF files will know it. Unless it's | |
172 | * used with CDC Ethernet, Linux 2.4 hosts will need updates to choose | |
173 | * the non-RNDIS configuration. | |
174 | */ | |
175 | #define RNDIS_VENDOR_NUM 0x0525 /* NetChip */ | |
176 | #define RNDIS_PRODUCT_NUM 0xa4a2 /* Ethernet/RNDIS Gadget */ | |
177 | ||
178 | ||
179 | /* Some systems will want different product identifers published in the | |
180 | * device descriptor, either numbers or strings or both. These string | |
181 | * parameters are in UTF-8 (superset of ASCII's 7 bit characters). | |
182 | */ | |
183 | ||
1afc64a3 | 184 | static ushort idVendor; |
1da177e4 LT |
185 | module_param(idVendor, ushort, S_IRUGO); |
186 | MODULE_PARM_DESC(idVendor, "USB Vendor ID"); | |
187 | ||
1afc64a3 | 188 | static ushort idProduct; |
1da177e4 LT |
189 | module_param(idProduct, ushort, S_IRUGO); |
190 | MODULE_PARM_DESC(idProduct, "USB Product ID"); | |
191 | ||
1afc64a3 | 192 | static ushort bcdDevice; |
1da177e4 LT |
193 | module_param(bcdDevice, ushort, S_IRUGO); |
194 | MODULE_PARM_DESC(bcdDevice, "USB Device version (BCD)"); | |
195 | ||
1afc64a3 | 196 | static char *iManufacturer; |
1da177e4 LT |
197 | module_param(iManufacturer, charp, S_IRUGO); |
198 | MODULE_PARM_DESC(iManufacturer, "USB Manufacturer string"); | |
199 | ||
1afc64a3 | 200 | static char *iProduct; |
1da177e4 LT |
201 | module_param(iProduct, charp, S_IRUGO); |
202 | MODULE_PARM_DESC(iProduct, "USB Product string"); | |
203 | ||
1afc64a3 AV |
204 | static char *iSerialNumber; |
205 | module_param(iSerialNumber, charp, S_IRUGO); | |
206 | MODULE_PARM_DESC(iSerialNumber, "SerialNumber"); | |
207 | ||
1da177e4 | 208 | /* initial value, changed by "ifconfig usb0 hw ether xx:xx:xx:xx:xx:xx" */ |
1afc64a3 | 209 | static char *dev_addr; |
1da177e4 LT |
210 | module_param(dev_addr, charp, S_IRUGO); |
211 | MODULE_PARM_DESC(dev_addr, "Device Ethernet Address"); | |
212 | ||
213 | /* this address is invisible to ifconfig */ | |
1afc64a3 | 214 | static char *host_addr; |
1da177e4 LT |
215 | module_param(host_addr, charp, S_IRUGO); |
216 | MODULE_PARM_DESC(host_addr, "Host Ethernet Address"); | |
217 | ||
218 | ||
219 | /*-------------------------------------------------------------------------*/ | |
220 | ||
221 | /* Include CDC support if we could run on CDC-capable hardware. */ | |
222 | ||
223 | #ifdef CONFIG_USB_GADGET_NET2280 | |
224 | #define DEV_CONFIG_CDC | |
225 | #endif | |
226 | ||
227 | #ifdef CONFIG_USB_GADGET_DUMMY_HCD | |
228 | #define DEV_CONFIG_CDC | |
229 | #endif | |
230 | ||
231 | #ifdef CONFIG_USB_GADGET_GOKU | |
232 | #define DEV_CONFIG_CDC | |
233 | #endif | |
234 | ||
235 | #ifdef CONFIG_USB_GADGET_LH7A40X | |
236 | #define DEV_CONFIG_CDC | |
237 | #endif | |
238 | ||
239 | #ifdef CONFIG_USB_GADGET_MQ11XX | |
240 | #define DEV_CONFIG_CDC | |
241 | #endif | |
242 | ||
243 | #ifdef CONFIG_USB_GADGET_OMAP | |
244 | #define DEV_CONFIG_CDC | |
245 | #endif | |
246 | ||
247 | #ifdef CONFIG_USB_GADGET_N9604 | |
248 | #define DEV_CONFIG_CDC | |
249 | #endif | |
250 | ||
251 | #ifdef CONFIG_USB_GADGET_PXA27X | |
252 | #define DEV_CONFIG_CDC | |
253 | #endif | |
254 | ||
255 | #ifdef CONFIG_USB_GADGET_AT91 | |
256 | #define DEV_CONFIG_CDC | |
257 | #endif | |
258 | ||
1c05ad44 DB |
259 | #ifdef CONFIG_USB_GADGET_MUSBHSFC |
260 | #define DEV_CONFIG_CDC | |
261 | #endif | |
262 | ||
263 | #ifdef CONFIG_USB_GADGET_MUSBHDRC | |
264 | #define DEV_CONFIG_CDC | |
265 | #endif | |
266 | ||
1da177e4 LT |
267 | |
268 | /* For CDC-incapable hardware, choose the simple cdc subset. | |
269 | * Anything that talks bulk (without notable bugs) can do this. | |
270 | */ | |
271 | #ifdef CONFIG_USB_GADGET_PXA2XX | |
272 | #define DEV_CONFIG_SUBSET | |
273 | #endif | |
274 | ||
275 | #ifdef CONFIG_USB_GADGET_SH | |
276 | #define DEV_CONFIG_SUBSET | |
277 | #endif | |
278 | ||
279 | #ifdef CONFIG_USB_GADGET_SA1100 | |
280 | /* use non-CDC for backwards compatibility */ | |
281 | #define DEV_CONFIG_SUBSET | |
282 | #endif | |
283 | ||
284 | #ifdef CONFIG_USB_GADGET_S3C2410 | |
285 | #define DEV_CONFIG_CDC | |
286 | #endif | |
287 | ||
288 | /*-------------------------------------------------------------------------*/ | |
289 | ||
290 | /* "main" config is either CDC, or its simple subset */ | |
291 | static inline int is_cdc(struct eth_dev *dev) | |
292 | { | |
293 | #if !defined(DEV_CONFIG_SUBSET) | |
294 | return 1; /* only cdc possible */ | |
295 | #elif !defined (DEV_CONFIG_CDC) | |
296 | return 0; /* only subset possible */ | |
297 | #else | |
298 | return dev->cdc; /* depends on what hardware we found */ | |
299 | #endif | |
300 | } | |
301 | ||
302 | /* "secondary" RNDIS config may sometimes be activated */ | |
303 | static inline int rndis_active(struct eth_dev *dev) | |
304 | { | |
305 | #ifdef CONFIG_USB_ETH_RNDIS | |
306 | return dev->rndis; | |
307 | #else | |
308 | return 0; | |
309 | #endif | |
310 | } | |
311 | ||
312 | #define subset_active(dev) (!is_cdc(dev) && !rndis_active(dev)) | |
313 | #define cdc_active(dev) ( is_cdc(dev) && !rndis_active(dev)) | |
314 | ||
315 | ||
316 | ||
317 | #define DEFAULT_QLEN 2 /* double buffering by default */ | |
318 | ||
319 | /* peak bulk transfer bits-per-second */ | |
7e27f18c | 320 | #define HS_BPS (13 * 512 * 8 * 1000 * 8) |
1da177e4 LT |
321 | #define FS_BPS (19 * 64 * 1 * 1000 * 8) |
322 | ||
323 | #ifdef CONFIG_USB_GADGET_DUALSPEED | |
907cba35 | 324 | #define DEVSPEED USB_SPEED_HIGH |
1da177e4 LT |
325 | |
326 | static unsigned qmult = 5; | |
327 | module_param (qmult, uint, S_IRUGO|S_IWUSR); | |
328 | ||
329 | ||
330 | /* for dual-speed hardware, use deeper queues at highspeed */ | |
331 | #define qlen(gadget) \ | |
332 | (DEFAULT_QLEN*((gadget->speed == USB_SPEED_HIGH) ? qmult : 1)) | |
333 | ||
334 | /* also defer IRQs on highspeed TX */ | |
335 | #define TX_DELAY qmult | |
336 | ||
6cdee106 DB |
337 | static inline int BITRATE(struct usb_gadget *g) |
338 | { | |
339 | return (g->speed == USB_SPEED_HIGH) ? HS_BPS : FS_BPS; | |
340 | } | |
1da177e4 LT |
341 | |
342 | #else /* full speed (low speed doesn't do bulk) */ | |
907cba35 DB |
343 | #define DEVSPEED USB_SPEED_FULL |
344 | ||
1da177e4 LT |
345 | #define qlen(gadget) DEFAULT_QLEN |
346 | ||
6cdee106 DB |
347 | static inline int BITRATE(struct usb_gadget *g) |
348 | { | |
349 | return FS_BPS; | |
350 | } | |
1da177e4 LT |
351 | #endif |
352 | ||
353 | ||
354 | /*-------------------------------------------------------------------------*/ | |
355 | ||
356 | #define xprintk(d,level,fmt,args...) \ | |
357 | printk(level "%s: " fmt , (d)->net->name , ## args) | |
358 | ||
359 | #ifdef DEBUG | |
360 | #undef DEBUG | |
361 | #define DEBUG(dev,fmt,args...) \ | |
362 | xprintk(dev , KERN_DEBUG , fmt , ## args) | |
363 | #else | |
364 | #define DEBUG(dev,fmt,args...) \ | |
365 | do { } while (0) | |
366 | #endif /* DEBUG */ | |
367 | ||
368 | #ifdef VERBOSE | |
369 | #define VDEBUG DEBUG | |
370 | #else | |
371 | #define VDEBUG(dev,fmt,args...) \ | |
372 | do { } while (0) | |
373 | #endif /* DEBUG */ | |
374 | ||
375 | #define ERROR(dev,fmt,args...) \ | |
376 | xprintk(dev , KERN_ERR , fmt , ## args) | |
377 | #define WARN(dev,fmt,args...) \ | |
378 | xprintk(dev , KERN_WARNING , fmt , ## args) | |
379 | #define INFO(dev,fmt,args...) \ | |
380 | xprintk(dev , KERN_INFO , fmt , ## args) | |
381 | ||
382 | /*-------------------------------------------------------------------------*/ | |
383 | ||
384 | /* USB DRIVER HOOKUP (to the hardware driver, below us), mostly | |
385 | * ep0 implementation: descriptors, config management, setup(). | |
386 | * also optional class-specific notification interrupt transfer. | |
387 | */ | |
388 | ||
389 | /* | |
390 | * DESCRIPTORS ... most are static, but strings and (full) configuration | |
391 | * descriptors are built on demand. For now we do either full CDC, or | |
392 | * our simple subset, with RNDIS as an optional second configuration. | |
393 | * | |
394 | * RNDIS includes some CDC ACM descriptors ... like CDC Ethernet. But | |
395 | * the class descriptors match a modem (they're ignored; it's really just | |
396 | * Ethernet functionality), they don't need the NOP altsetting, and the | |
397 | * status transfer endpoint isn't optional. | |
398 | */ | |
399 | ||
400 | #define STRING_MANUFACTURER 1 | |
401 | #define STRING_PRODUCT 2 | |
402 | #define STRING_ETHADDR 3 | |
403 | #define STRING_DATA 4 | |
404 | #define STRING_CONTROL 5 | |
405 | #define STRING_RNDIS_CONTROL 6 | |
406 | #define STRING_CDC 7 | |
407 | #define STRING_SUBSET 8 | |
408 | #define STRING_RNDIS 9 | |
1afc64a3 | 409 | #define STRING_SERIALNUMBER 10 |
1da177e4 | 410 | |
340600ab DB |
411 | /* holds our biggest descriptor (or RNDIS response) */ |
412 | #define USB_BUFSIZ 256 | |
1da177e4 LT |
413 | |
414 | /* | |
415 | * This device advertises one configuration, eth_config, unless RNDIS | |
416 | * is enabled (rndis_config) on hardware supporting at least two configs. | |
417 | * | |
418 | * NOTE: Controllers like superh_udc should probably be able to use | |
419 | * an RNDIS-only configuration. | |
420 | * | |
421 | * FIXME define some higher-powered configurations to make it easier | |
422 | * to recharge batteries ... | |
423 | */ | |
424 | ||
425 | #define DEV_CONFIG_VALUE 1 /* cdc or subset */ | |
426 | #define DEV_RNDIS_CONFIG_VALUE 2 /* rndis; optional */ | |
427 | ||
428 | static struct usb_device_descriptor | |
429 | device_desc = { | |
430 | .bLength = sizeof device_desc, | |
431 | .bDescriptorType = USB_DT_DEVICE, | |
432 | ||
433 | .bcdUSB = __constant_cpu_to_le16 (0x0200), | |
434 | ||
435 | .bDeviceClass = USB_CLASS_COMM, | |
436 | .bDeviceSubClass = 0, | |
437 | .bDeviceProtocol = 0, | |
438 | ||
439 | .idVendor = __constant_cpu_to_le16 (CDC_VENDOR_NUM), | |
440 | .idProduct = __constant_cpu_to_le16 (CDC_PRODUCT_NUM), | |
441 | .iManufacturer = STRING_MANUFACTURER, | |
442 | .iProduct = STRING_PRODUCT, | |
443 | .bNumConfigurations = 1, | |
444 | }; | |
445 | ||
446 | static struct usb_otg_descriptor | |
447 | otg_descriptor = { | |
448 | .bLength = sizeof otg_descriptor, | |
449 | .bDescriptorType = USB_DT_OTG, | |
450 | ||
451 | .bmAttributes = USB_OTG_SRP, | |
452 | }; | |
453 | ||
454 | static struct usb_config_descriptor | |
455 | eth_config = { | |
456 | .bLength = sizeof eth_config, | |
457 | .bDescriptorType = USB_DT_CONFIG, | |
458 | ||
459 | /* compute wTotalLength on the fly */ | |
460 | .bNumInterfaces = 2, | |
461 | .bConfigurationValue = DEV_CONFIG_VALUE, | |
462 | .iConfiguration = STRING_CDC, | |
463 | .bmAttributes = USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER, | |
464 | .bMaxPower = 50, | |
465 | }; | |
466 | ||
467 | #ifdef CONFIG_USB_ETH_RNDIS | |
7e27f18c | 468 | static struct usb_config_descriptor |
1da177e4 LT |
469 | rndis_config = { |
470 | .bLength = sizeof rndis_config, | |
471 | .bDescriptorType = USB_DT_CONFIG, | |
472 | ||
473 | /* compute wTotalLength on the fly */ | |
474 | .bNumInterfaces = 2, | |
475 | .bConfigurationValue = DEV_RNDIS_CONFIG_VALUE, | |
476 | .iConfiguration = STRING_RNDIS, | |
477 | .bmAttributes = USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER, | |
478 | .bMaxPower = 50, | |
479 | }; | |
480 | #endif | |
481 | ||
482 | /* | |
483 | * Compared to the simple CDC subset, the full CDC Ethernet model adds | |
484 | * three class descriptors, two interface descriptors, optional status | |
485 | * endpoint. Both have a "data" interface and two bulk endpoints. | |
486 | * There are also differences in how control requests are handled. | |
487 | * | |
488 | * RNDIS shares a lot with CDC-Ethernet, since it's a variant of | |
489 | * the CDC-ACM (modem) spec. | |
490 | */ | |
491 | ||
492 | #ifdef DEV_CONFIG_CDC | |
493 | static struct usb_interface_descriptor | |
494 | control_intf = { | |
495 | .bLength = sizeof control_intf, | |
496 | .bDescriptorType = USB_DT_INTERFACE, | |
497 | ||
498 | .bInterfaceNumber = 0, | |
499 | /* status endpoint is optional; this may be patched later */ | |
500 | .bNumEndpoints = 1, | |
501 | .bInterfaceClass = USB_CLASS_COMM, | |
502 | .bInterfaceSubClass = USB_CDC_SUBCLASS_ETHERNET, | |
503 | .bInterfaceProtocol = USB_CDC_PROTO_NONE, | |
504 | .iInterface = STRING_CONTROL, | |
505 | }; | |
506 | #endif | |
507 | ||
508 | #ifdef CONFIG_USB_ETH_RNDIS | |
509 | static const struct usb_interface_descriptor | |
510 | rndis_control_intf = { | |
511 | .bLength = sizeof rndis_control_intf, | |
512 | .bDescriptorType = USB_DT_INTERFACE, | |
7e27f18c | 513 | |
1da177e4 LT |
514 | .bInterfaceNumber = 0, |
515 | .bNumEndpoints = 1, | |
516 | .bInterfaceClass = USB_CLASS_COMM, | |
517 | .bInterfaceSubClass = USB_CDC_SUBCLASS_ACM, | |
518 | .bInterfaceProtocol = USB_CDC_ACM_PROTO_VENDOR, | |
519 | .iInterface = STRING_RNDIS_CONTROL, | |
520 | }; | |
521 | #endif | |
522 | ||
523 | #if defined(DEV_CONFIG_CDC) || defined(CONFIG_USB_ETH_RNDIS) | |
524 | ||
525 | static const struct usb_cdc_header_desc header_desc = { | |
526 | .bLength = sizeof header_desc, | |
527 | .bDescriptorType = USB_DT_CS_INTERFACE, | |
528 | .bDescriptorSubType = USB_CDC_HEADER_TYPE, | |
529 | ||
530 | .bcdCDC = __constant_cpu_to_le16 (0x0110), | |
531 | }; | |
532 | ||
533 | static const struct usb_cdc_union_desc union_desc = { | |
534 | .bLength = sizeof union_desc, | |
535 | .bDescriptorType = USB_DT_CS_INTERFACE, | |
536 | .bDescriptorSubType = USB_CDC_UNION_TYPE, | |
537 | ||
538 | .bMasterInterface0 = 0, /* index of control interface */ | |
539 | .bSlaveInterface0 = 1, /* index of DATA interface */ | |
540 | }; | |
541 | ||
542 | #endif /* CDC || RNDIS */ | |
543 | ||
544 | #ifdef CONFIG_USB_ETH_RNDIS | |
545 | ||
546 | static const struct usb_cdc_call_mgmt_descriptor call_mgmt_descriptor = { | |
7e27f18c DB |
547 | .bLength = sizeof call_mgmt_descriptor, |
548 | .bDescriptorType = USB_DT_CS_INTERFACE, | |
549 | .bDescriptorSubType = USB_CDC_CALL_MANAGEMENT_TYPE, | |
1da177e4 | 550 | |
7e27f18c DB |
551 | .bmCapabilities = 0x00, |
552 | .bDataInterface = 0x01, | |
1da177e4 LT |
553 | }; |
554 | ||
907cba35 | 555 | static const struct usb_cdc_acm_descriptor acm_descriptor = { |
7e27f18c DB |
556 | .bLength = sizeof acm_descriptor, |
557 | .bDescriptorType = USB_DT_CS_INTERFACE, | |
558 | .bDescriptorSubType = USB_CDC_ACM_TYPE, | |
1da177e4 | 559 | |
7e27f18c | 560 | .bmCapabilities = 0x00, |
1da177e4 LT |
561 | }; |
562 | ||
563 | #endif | |
564 | ||
565 | #ifdef DEV_CONFIG_CDC | |
566 | ||
567 | static const struct usb_cdc_ether_desc ether_desc = { | |
568 | .bLength = sizeof ether_desc, | |
569 | .bDescriptorType = USB_DT_CS_INTERFACE, | |
570 | .bDescriptorSubType = USB_CDC_ETHERNET_TYPE, | |
571 | ||
572 | /* this descriptor actually adds value, surprise! */ | |
573 | .iMACAddress = STRING_ETHADDR, | |
574 | .bmEthernetStatistics = __constant_cpu_to_le32 (0), /* no statistics */ | |
575 | .wMaxSegmentSize = __constant_cpu_to_le16 (ETH_FRAME_LEN), | |
576 | .wNumberMCFilters = __constant_cpu_to_le16 (0), | |
577 | .bNumberPowerFilters = 0, | |
578 | }; | |
579 | ||
580 | #endif | |
581 | ||
582 | #if defined(DEV_CONFIG_CDC) || defined(CONFIG_USB_ETH_RNDIS) | |
583 | ||
584 | /* include the status endpoint if we can, even where it's optional. | |
585 | * use wMaxPacketSize big enough to fit CDC_NOTIFY_SPEED_CHANGE in one | |
093cf723 | 586 | * packet, to simplify cancellation; and a big transfer interval, to |
1da177e4 LT |
587 | * waste less bandwidth. |
588 | * | |
589 | * some drivers (like Linux 2.4 cdc-ether!) "need" it to exist even | |
590 | * if they ignore the connect/disconnect notifications that real aether | |
591 | * can provide. more advanced cdc configurations might want to support | |
592 | * encapsulated commands (vendor-specific, using control-OUT). | |
593 | * | |
594 | * RNDIS requires the status endpoint, since it uses that encapsulation | |
595 | * mechanism for its funky RPC scheme. | |
596 | */ | |
7e27f18c | 597 | |
1da177e4 LT |
598 | #define LOG2_STATUS_INTERVAL_MSEC 5 /* 1 << 5 == 32 msec */ |
599 | #define STATUS_BYTECOUNT 16 /* 8 byte header + data */ | |
600 | ||
601 | static struct usb_endpoint_descriptor | |
602 | fs_status_desc = { | |
603 | .bLength = USB_DT_ENDPOINT_SIZE, | |
604 | .bDescriptorType = USB_DT_ENDPOINT, | |
605 | ||
606 | .bEndpointAddress = USB_DIR_IN, | |
607 | .bmAttributes = USB_ENDPOINT_XFER_INT, | |
608 | .wMaxPacketSize = __constant_cpu_to_le16 (STATUS_BYTECOUNT), | |
609 | .bInterval = 1 << LOG2_STATUS_INTERVAL_MSEC, | |
610 | }; | |
611 | #endif | |
612 | ||
613 | #ifdef DEV_CONFIG_CDC | |
614 | ||
615 | /* the default data interface has no endpoints ... */ | |
616 | ||
617 | static const struct usb_interface_descriptor | |
618 | data_nop_intf = { | |
619 | .bLength = sizeof data_nop_intf, | |
620 | .bDescriptorType = USB_DT_INTERFACE, | |
621 | ||
622 | .bInterfaceNumber = 1, | |
623 | .bAlternateSetting = 0, | |
624 | .bNumEndpoints = 0, | |
625 | .bInterfaceClass = USB_CLASS_CDC_DATA, | |
626 | .bInterfaceSubClass = 0, | |
627 | .bInterfaceProtocol = 0, | |
628 | }; | |
629 | ||
630 | /* ... but the "real" data interface has two bulk endpoints */ | |
631 | ||
632 | static const struct usb_interface_descriptor | |
633 | data_intf = { | |
634 | .bLength = sizeof data_intf, | |
635 | .bDescriptorType = USB_DT_INTERFACE, | |
636 | ||
637 | .bInterfaceNumber = 1, | |
638 | .bAlternateSetting = 1, | |
639 | .bNumEndpoints = 2, | |
640 | .bInterfaceClass = USB_CLASS_CDC_DATA, | |
641 | .bInterfaceSubClass = 0, | |
642 | .bInterfaceProtocol = 0, | |
643 | .iInterface = STRING_DATA, | |
644 | }; | |
645 | ||
646 | #endif | |
647 | ||
648 | #ifdef CONFIG_USB_ETH_RNDIS | |
649 | ||
650 | /* RNDIS doesn't activate by changing to the "real" altsetting */ | |
651 | ||
652 | static const struct usb_interface_descriptor | |
653 | rndis_data_intf = { | |
654 | .bLength = sizeof rndis_data_intf, | |
655 | .bDescriptorType = USB_DT_INTERFACE, | |
656 | ||
657 | .bInterfaceNumber = 1, | |
658 | .bAlternateSetting = 0, | |
659 | .bNumEndpoints = 2, | |
660 | .bInterfaceClass = USB_CLASS_CDC_DATA, | |
661 | .bInterfaceSubClass = 0, | |
662 | .bInterfaceProtocol = 0, | |
663 | .iInterface = STRING_DATA, | |
664 | }; | |
665 | ||
666 | #endif | |
667 | ||
668 | #ifdef DEV_CONFIG_SUBSET | |
669 | ||
670 | /* | |
671 | * "Simple" CDC-subset option is a simple vendor-neutral model that most | |
672 | * full speed controllers can handle: one interface, two bulk endpoints. | |
673 | */ | |
674 | ||
675 | static const struct usb_interface_descriptor | |
676 | subset_data_intf = { | |
677 | .bLength = sizeof subset_data_intf, | |
678 | .bDescriptorType = USB_DT_INTERFACE, | |
679 | ||
680 | .bInterfaceNumber = 0, | |
681 | .bAlternateSetting = 0, | |
682 | .bNumEndpoints = 2, | |
683 | .bInterfaceClass = USB_CLASS_VENDOR_SPEC, | |
684 | .bInterfaceSubClass = 0, | |
685 | .bInterfaceProtocol = 0, | |
686 | .iInterface = STRING_DATA, | |
687 | }; | |
688 | ||
689 | #endif /* SUBSET */ | |
690 | ||
691 | ||
692 | static struct usb_endpoint_descriptor | |
693 | fs_source_desc = { | |
694 | .bLength = USB_DT_ENDPOINT_SIZE, | |
695 | .bDescriptorType = USB_DT_ENDPOINT, | |
696 | ||
697 | .bEndpointAddress = USB_DIR_IN, | |
698 | .bmAttributes = USB_ENDPOINT_XFER_BULK, | |
699 | }; | |
700 | ||
701 | static struct usb_endpoint_descriptor | |
702 | fs_sink_desc = { | |
703 | .bLength = USB_DT_ENDPOINT_SIZE, | |
704 | .bDescriptorType = USB_DT_ENDPOINT, | |
705 | ||
706 | .bEndpointAddress = USB_DIR_OUT, | |
707 | .bmAttributes = USB_ENDPOINT_XFER_BULK, | |
708 | }; | |
709 | ||
710 | static const struct usb_descriptor_header *fs_eth_function [11] = { | |
711 | (struct usb_descriptor_header *) &otg_descriptor, | |
712 | #ifdef DEV_CONFIG_CDC | |
713 | /* "cdc" mode descriptors */ | |
714 | (struct usb_descriptor_header *) &control_intf, | |
715 | (struct usb_descriptor_header *) &header_desc, | |
716 | (struct usb_descriptor_header *) &union_desc, | |
717 | (struct usb_descriptor_header *) ðer_desc, | |
718 | /* NOTE: status endpoint may need to be removed */ | |
719 | (struct usb_descriptor_header *) &fs_status_desc, | |
720 | /* data interface, with altsetting */ | |
721 | (struct usb_descriptor_header *) &data_nop_intf, | |
722 | (struct usb_descriptor_header *) &data_intf, | |
723 | (struct usb_descriptor_header *) &fs_source_desc, | |
724 | (struct usb_descriptor_header *) &fs_sink_desc, | |
725 | NULL, | |
726 | #endif /* DEV_CONFIG_CDC */ | |
727 | }; | |
728 | ||
729 | static inline void __init fs_subset_descriptors(void) | |
730 | { | |
731 | #ifdef DEV_CONFIG_SUBSET | |
732 | fs_eth_function[1] = (struct usb_descriptor_header *) &subset_data_intf; | |
733 | fs_eth_function[2] = (struct usb_descriptor_header *) &fs_source_desc; | |
734 | fs_eth_function[3] = (struct usb_descriptor_header *) &fs_sink_desc; | |
735 | fs_eth_function[4] = NULL; | |
736 | #else | |
737 | fs_eth_function[1] = NULL; | |
738 | #endif | |
739 | } | |
740 | ||
741 | #ifdef CONFIG_USB_ETH_RNDIS | |
742 | static const struct usb_descriptor_header *fs_rndis_function [] = { | |
743 | (struct usb_descriptor_header *) &otg_descriptor, | |
744 | /* control interface matches ACM, not Ethernet */ | |
745 | (struct usb_descriptor_header *) &rndis_control_intf, | |
746 | (struct usb_descriptor_header *) &header_desc, | |
747 | (struct usb_descriptor_header *) &call_mgmt_descriptor, | |
748 | (struct usb_descriptor_header *) &acm_descriptor, | |
749 | (struct usb_descriptor_header *) &union_desc, | |
750 | (struct usb_descriptor_header *) &fs_status_desc, | |
751 | /* data interface has no altsetting */ | |
752 | (struct usb_descriptor_header *) &rndis_data_intf, | |
753 | (struct usb_descriptor_header *) &fs_source_desc, | |
754 | (struct usb_descriptor_header *) &fs_sink_desc, | |
755 | NULL, | |
756 | }; | |
757 | #endif | |
758 | ||
759 | #ifdef CONFIG_USB_GADGET_DUALSPEED | |
760 | ||
761 | /* | |
762 | * usb 2.0 devices need to expose both high speed and full speed | |
763 | * descriptors, unless they only run at full speed. | |
764 | */ | |
765 | ||
766 | #if defined(DEV_CONFIG_CDC) || defined(CONFIG_USB_ETH_RNDIS) | |
767 | static struct usb_endpoint_descriptor | |
768 | hs_status_desc = { | |
769 | .bLength = USB_DT_ENDPOINT_SIZE, | |
770 | .bDescriptorType = USB_DT_ENDPOINT, | |
771 | ||
772 | .bmAttributes = USB_ENDPOINT_XFER_INT, | |
773 | .wMaxPacketSize = __constant_cpu_to_le16 (STATUS_BYTECOUNT), | |
774 | .bInterval = LOG2_STATUS_INTERVAL_MSEC + 4, | |
775 | }; | |
776 | #endif /* DEV_CONFIG_CDC */ | |
777 | ||
778 | static struct usb_endpoint_descriptor | |
779 | hs_source_desc = { | |
780 | .bLength = USB_DT_ENDPOINT_SIZE, | |
781 | .bDescriptorType = USB_DT_ENDPOINT, | |
782 | ||
783 | .bmAttributes = USB_ENDPOINT_XFER_BULK, | |
784 | .wMaxPacketSize = __constant_cpu_to_le16 (512), | |
785 | }; | |
786 | ||
787 | static struct usb_endpoint_descriptor | |
788 | hs_sink_desc = { | |
789 | .bLength = USB_DT_ENDPOINT_SIZE, | |
790 | .bDescriptorType = USB_DT_ENDPOINT, | |
791 | ||
792 | .bmAttributes = USB_ENDPOINT_XFER_BULK, | |
793 | .wMaxPacketSize = __constant_cpu_to_le16 (512), | |
794 | }; | |
795 | ||
796 | static struct usb_qualifier_descriptor | |
797 | dev_qualifier = { | |
798 | .bLength = sizeof dev_qualifier, | |
799 | .bDescriptorType = USB_DT_DEVICE_QUALIFIER, | |
800 | ||
801 | .bcdUSB = __constant_cpu_to_le16 (0x0200), | |
802 | .bDeviceClass = USB_CLASS_COMM, | |
803 | ||
804 | .bNumConfigurations = 1, | |
805 | }; | |
806 | ||
807 | static const struct usb_descriptor_header *hs_eth_function [11] = { | |
808 | (struct usb_descriptor_header *) &otg_descriptor, | |
809 | #ifdef DEV_CONFIG_CDC | |
810 | /* "cdc" mode descriptors */ | |
811 | (struct usb_descriptor_header *) &control_intf, | |
812 | (struct usb_descriptor_header *) &header_desc, | |
813 | (struct usb_descriptor_header *) &union_desc, | |
814 | (struct usb_descriptor_header *) ðer_desc, | |
815 | /* NOTE: status endpoint may need to be removed */ | |
816 | (struct usb_descriptor_header *) &hs_status_desc, | |
817 | /* data interface, with altsetting */ | |
818 | (struct usb_descriptor_header *) &data_nop_intf, | |
819 | (struct usb_descriptor_header *) &data_intf, | |
820 | (struct usb_descriptor_header *) &hs_source_desc, | |
821 | (struct usb_descriptor_header *) &hs_sink_desc, | |
822 | NULL, | |
823 | #endif /* DEV_CONFIG_CDC */ | |
824 | }; | |
825 | ||
826 | static inline void __init hs_subset_descriptors(void) | |
827 | { | |
828 | #ifdef DEV_CONFIG_SUBSET | |
829 | hs_eth_function[1] = (struct usb_descriptor_header *) &subset_data_intf; | |
830 | hs_eth_function[2] = (struct usb_descriptor_header *) &fs_source_desc; | |
831 | hs_eth_function[3] = (struct usb_descriptor_header *) &fs_sink_desc; | |
832 | hs_eth_function[4] = NULL; | |
833 | #else | |
834 | hs_eth_function[1] = NULL; | |
835 | #endif | |
836 | } | |
837 | ||
838 | #ifdef CONFIG_USB_ETH_RNDIS | |
839 | static const struct usb_descriptor_header *hs_rndis_function [] = { | |
840 | (struct usb_descriptor_header *) &otg_descriptor, | |
841 | /* control interface matches ACM, not Ethernet */ | |
842 | (struct usb_descriptor_header *) &rndis_control_intf, | |
843 | (struct usb_descriptor_header *) &header_desc, | |
844 | (struct usb_descriptor_header *) &call_mgmt_descriptor, | |
845 | (struct usb_descriptor_header *) &acm_descriptor, | |
846 | (struct usb_descriptor_header *) &union_desc, | |
847 | (struct usb_descriptor_header *) &hs_status_desc, | |
848 | /* data interface has no altsetting */ | |
849 | (struct usb_descriptor_header *) &rndis_data_intf, | |
850 | (struct usb_descriptor_header *) &hs_source_desc, | |
851 | (struct usb_descriptor_header *) &hs_sink_desc, | |
852 | NULL, | |
853 | }; | |
854 | #endif | |
855 | ||
856 | ||
857 | /* maxpacket and other transfer characteristics vary by speed. */ | |
858 | #define ep_desc(g,hs,fs) (((g)->speed==USB_SPEED_HIGH)?(hs):(fs)) | |
859 | ||
860 | #else | |
861 | ||
862 | /* if there's no high speed support, maxpacket doesn't change. */ | |
907cba35 | 863 | #define ep_desc(g,hs,fs) (((void)(g)), (fs)) |
1da177e4 LT |
864 | |
865 | static inline void __init hs_subset_descriptors(void) | |
866 | { | |
867 | } | |
868 | ||
869 | #endif /* !CONFIG_USB_GADGET_DUALSPEED */ | |
870 | ||
871 | /*-------------------------------------------------------------------------*/ | |
872 | ||
873 | /* descriptors that are built on-demand */ | |
874 | ||
875 | static char manufacturer [50]; | |
876 | static char product_desc [40] = DRIVER_DESC; | |
1afc64a3 | 877 | static char serial_number [20]; |
1da177e4 LT |
878 | |
879 | #ifdef DEV_CONFIG_CDC | |
880 | /* address that the host will use ... usually assigned at random */ | |
881 | static char ethaddr [2 * ETH_ALEN + 1]; | |
882 | #endif | |
883 | ||
884 | /* static strings, in UTF-8 */ | |
885 | static struct usb_string strings [] = { | |
886 | { STRING_MANUFACTURER, manufacturer, }, | |
887 | { STRING_PRODUCT, product_desc, }, | |
1afc64a3 | 888 | { STRING_SERIALNUMBER, serial_number, }, |
1da177e4 LT |
889 | { STRING_DATA, "Ethernet Data", }, |
890 | #ifdef DEV_CONFIG_CDC | |
891 | { STRING_CDC, "CDC Ethernet", }, | |
892 | { STRING_ETHADDR, ethaddr, }, | |
893 | { STRING_CONTROL, "CDC Communications Control", }, | |
894 | #endif | |
895 | #ifdef DEV_CONFIG_SUBSET | |
896 | { STRING_SUBSET, "CDC Ethernet Subset", }, | |
897 | #endif | |
898 | #ifdef CONFIG_USB_ETH_RNDIS | |
899 | { STRING_RNDIS, "RNDIS", }, | |
900 | { STRING_RNDIS_CONTROL, "RNDIS Communications Control", }, | |
901 | #endif | |
902 | { } /* end of list */ | |
903 | }; | |
904 | ||
905 | static struct usb_gadget_strings stringtab = { | |
906 | .language = 0x0409, /* en-us */ | |
907 | .strings = strings, | |
908 | }; | |
909 | ||
910 | /* | |
911 | * one config, two interfaces: control, data. | |
912 | * complications: class descriptors, and an altsetting. | |
913 | */ | |
914 | static int | |
915 | config_buf (enum usb_device_speed speed, | |
916 | u8 *buf, u8 type, | |
917 | unsigned index, int is_otg) | |
918 | { | |
919 | int len; | |
920 | const struct usb_config_descriptor *config; | |
921 | const struct usb_descriptor_header **function; | |
922 | #ifdef CONFIG_USB_GADGET_DUALSPEED | |
923 | int hs = (speed == USB_SPEED_HIGH); | |
924 | ||
925 | if (type == USB_DT_OTHER_SPEED_CONFIG) | |
926 | hs = !hs; | |
927 | #define which_fn(t) (hs ? hs_ ## t ## _function : fs_ ## t ## _function) | |
928 | #else | |
929 | #define which_fn(t) (fs_ ## t ## _function) | |
930 | #endif | |
931 | ||
932 | if (index >= device_desc.bNumConfigurations) | |
933 | return -EINVAL; | |
934 | ||
935 | #ifdef CONFIG_USB_ETH_RNDIS | |
936 | /* list the RNDIS config first, to make Microsoft's drivers | |
937 | * happy. DOCSIS 1.0 needs this too. | |
938 | */ | |
939 | if (device_desc.bNumConfigurations == 2 && index == 0) { | |
940 | config = &rndis_config; | |
941 | function = which_fn (rndis); | |
942 | } else | |
943 | #endif | |
944 | { | |
945 | config = ð_config; | |
946 | function = which_fn (eth); | |
947 | } | |
948 | ||
949 | /* for now, don't advertise srp-only devices */ | |
950 | if (!is_otg) | |
951 | function++; | |
952 | ||
953 | len = usb_gadget_config_buf (config, buf, USB_BUFSIZ, function); | |
954 | if (len < 0) | |
955 | return len; | |
956 | ((struct usb_config_descriptor *) buf)->bDescriptorType = type; | |
957 | return len; | |
958 | } | |
959 | ||
960 | /*-------------------------------------------------------------------------*/ | |
961 | ||
55016f10 AV |
962 | static void eth_start (struct eth_dev *dev, gfp_t gfp_flags); |
963 | static int alloc_requests (struct eth_dev *dev, unsigned n, gfp_t gfp_flags); | |
1da177e4 | 964 | |
907cba35 | 965 | static int |
55016f10 | 966 | set_ether_config (struct eth_dev *dev, gfp_t gfp_flags) |
1da177e4 | 967 | { |
907cba35 DB |
968 | int result = 0; |
969 | struct usb_gadget *gadget = dev->gadget; | |
970 | ||
e828264e | 971 | #if defined(DEV_CONFIG_CDC) || defined(CONFIG_USB_ETH_RNDIS) |
907cba35 DB |
972 | /* status endpoint used for RNDIS and (optionally) CDC */ |
973 | if (!subset_active(dev) && dev->status_ep) { | |
974 | dev->status = ep_desc (gadget, &hs_status_desc, | |
975 | &fs_status_desc); | |
976 | dev->status_ep->driver_data = dev; | |
977 | ||
978 | result = usb_ep_enable (dev->status_ep, dev->status); | |
979 | if (result != 0) { | |
7e27f18c | 980 | DEBUG (dev, "enable %s --> %d\n", |
907cba35 DB |
981 | dev->status_ep->name, result); |
982 | goto done; | |
983 | } | |
984 | } | |
e828264e | 985 | #endif |
907cba35 DB |
986 | |
987 | dev->in = ep_desc (dev->gadget, &hs_source_desc, &fs_source_desc); | |
988 | dev->in_ep->driver_data = dev; | |
989 | ||
990 | dev->out = ep_desc (dev->gadget, &hs_sink_desc, &fs_sink_desc); | |
991 | dev->out_ep->driver_data = dev; | |
1da177e4 LT |
992 | |
993 | /* With CDC, the host isn't allowed to use these two data | |
994 | * endpoints in the default altsetting for the interface. | |
995 | * so we don't activate them yet. Reset from SET_INTERFACE. | |
996 | * | |
997 | * Strictly speaking RNDIS should work the same: activation is | |
998 | * a side effect of setting a packet filter. Deactivation is | |
999 | * from REMOTE_NDIS_HALT_MSG, reset from REMOTE_NDIS_RESET_MSG. | |
1000 | */ | |
907cba35 DB |
1001 | if (!cdc_active(dev)) { |
1002 | result = usb_ep_enable (dev->in_ep, dev->in); | |
1003 | if (result != 0) { | |
7e27f18c | 1004 | DEBUG(dev, "enable %s --> %d\n", |
907cba35 DB |
1005 | dev->in_ep->name, result); |
1006 | goto done; | |
1da177e4 | 1007 | } |
1da177e4 | 1008 | |
907cba35 DB |
1009 | result = usb_ep_enable (dev->out_ep, dev->out); |
1010 | if (result != 0) { | |
7e27f18c | 1011 | DEBUG (dev, "enable %s --> %d\n", |
4186c29c | 1012 | dev->out_ep->name, result); |
907cba35 | 1013 | goto done; |
1da177e4 | 1014 | } |
1da177e4 | 1015 | } |
1da177e4 | 1016 | |
907cba35 | 1017 | done: |
1da177e4 LT |
1018 | if (result == 0) |
1019 | result = alloc_requests (dev, qlen (gadget), gfp_flags); | |
1020 | ||
1021 | /* on error, disable any endpoints */ | |
1022 | if (result < 0) { | |
907cba35 | 1023 | if (!subset_active(dev)) |
1da177e4 | 1024 | (void) usb_ep_disable (dev->status_ep); |
1da177e4 | 1025 | dev->status = NULL; |
907cba35 DB |
1026 | (void) usb_ep_disable (dev->in_ep); |
1027 | (void) usb_ep_disable (dev->out_ep); | |
1da177e4 LT |
1028 | dev->in = NULL; |
1029 | dev->out = NULL; | |
1030 | } else | |
1031 | ||
1032 | /* activate non-CDC configs right away | |
1033 | * this isn't strictly according to the RNDIS spec | |
1034 | */ | |
907cba35 | 1035 | if (!cdc_active (dev)) { |
1da177e4 LT |
1036 | netif_carrier_on (dev->net); |
1037 | if (netif_running (dev->net)) { | |
1038 | spin_unlock (&dev->lock); | |
1039 | eth_start (dev, GFP_ATOMIC); | |
1040 | spin_lock (&dev->lock); | |
1041 | } | |
1042 | } | |
1da177e4 LT |
1043 | |
1044 | if (result == 0) | |
1045 | DEBUG (dev, "qlen %d\n", qlen (gadget)); | |
1046 | ||
1047 | /* caller is responsible for cleanup on error */ | |
1048 | return result; | |
1049 | } | |
1050 | ||
1051 | static void eth_reset_config (struct eth_dev *dev) | |
1052 | { | |
1053 | struct usb_request *req; | |
1054 | ||
1055 | if (dev->config == 0) | |
1056 | return; | |
1057 | ||
1058 | DEBUG (dev, "%s\n", __FUNCTION__); | |
1059 | ||
1060 | netif_stop_queue (dev->net); | |
1061 | netif_carrier_off (dev->net); | |
340600ab | 1062 | rndis_uninit(dev->rndis_config); |
1da177e4 LT |
1063 | |
1064 | /* disable endpoints, forcing (synchronous) completion of | |
1065 | * pending i/o. then free the requests. | |
1066 | */ | |
1067 | if (dev->in) { | |
1068 | usb_ep_disable (dev->in_ep); | |
1069 | while (likely (!list_empty (&dev->tx_reqs))) { | |
1070 | req = container_of (dev->tx_reqs.next, | |
1071 | struct usb_request, list); | |
1072 | list_del (&req->list); | |
1073 | usb_ep_free_request (dev->in_ep, req); | |
1074 | } | |
1075 | } | |
1076 | if (dev->out) { | |
1077 | usb_ep_disable (dev->out_ep); | |
1078 | while (likely (!list_empty (&dev->rx_reqs))) { | |
1079 | req = container_of (dev->rx_reqs.next, | |
1080 | struct usb_request, list); | |
1081 | list_del (&req->list); | |
1082 | usb_ep_free_request (dev->out_ep, req); | |
1083 | } | |
1084 | } | |
1085 | ||
1086 | if (dev->status) { | |
1087 | usb_ep_disable (dev->status_ep); | |
1088 | } | |
907cba35 DB |
1089 | dev->rndis = 0; |
1090 | dev->cdc_filter = 0; | |
1da177e4 LT |
1091 | dev->config = 0; |
1092 | } | |
1093 | ||
1094 | /* change our operational config. must agree with the code | |
1095 | * that returns config descriptors, and altsetting code. | |
1096 | */ | |
1097 | static int | |
55016f10 | 1098 | eth_set_config (struct eth_dev *dev, unsigned number, gfp_t gfp_flags) |
1da177e4 LT |
1099 | { |
1100 | int result = 0; | |
1101 | struct usb_gadget *gadget = dev->gadget; | |
1102 | ||
1da177e4 LT |
1103 | if (gadget_is_sa1100 (gadget) |
1104 | && dev->config | |
1105 | && atomic_read (&dev->tx_qlen) != 0) { | |
1106 | /* tx fifo is full, but we can't clear it...*/ | |
1107 | INFO (dev, "can't change configurations\n"); | |
1108 | return -ESPIPE; | |
1109 | } | |
1110 | eth_reset_config (dev); | |
1111 | ||
1da177e4 LT |
1112 | switch (number) { |
1113 | case DEV_CONFIG_VALUE: | |
1da177e4 LT |
1114 | result = set_ether_config (dev, gfp_flags); |
1115 | break; | |
1116 | #ifdef CONFIG_USB_ETH_RNDIS | |
1117 | case DEV_RNDIS_CONFIG_VALUE: | |
1118 | dev->rndis = 1; | |
1119 | result = set_ether_config (dev, gfp_flags); | |
1120 | break; | |
1121 | #endif | |
1122 | default: | |
1123 | result = -EINVAL; | |
1124 | /* FALL THROUGH */ | |
1125 | case 0: | |
1126 | break; | |
1127 | } | |
1128 | ||
1129 | if (result) { | |
1130 | if (number) | |
1131 | eth_reset_config (dev); | |
1132 | usb_gadget_vbus_draw(dev->gadget, | |
1133 | dev->gadget->is_otg ? 8 : 100); | |
1134 | } else { | |
1135 | char *speed; | |
1136 | unsigned power; | |
1137 | ||
1138 | power = 2 * eth_config.bMaxPower; | |
1139 | usb_gadget_vbus_draw(dev->gadget, power); | |
1140 | ||
1141 | switch (gadget->speed) { | |
1142 | case USB_SPEED_FULL: speed = "full"; break; | |
1143 | #ifdef CONFIG_USB_GADGET_DUALSPEED | |
1144 | case USB_SPEED_HIGH: speed = "high"; break; | |
1145 | #endif | |
7e27f18c | 1146 | default: speed = "?"; break; |
1da177e4 LT |
1147 | } |
1148 | ||
1149 | dev->config = number; | |
1150 | INFO (dev, "%s speed config #%d: %d mA, %s, using %s\n", | |
1151 | speed, number, power, driver_desc, | |
45e45ab4 | 1152 | rndis_active(dev) |
1da177e4 | 1153 | ? "RNDIS" |
45e45ab4 | 1154 | : (cdc_active(dev) |
1da177e4 LT |
1155 | ? "CDC Ethernet" |
1156 | : "CDC Ethernet Subset")); | |
1157 | } | |
1158 | return result; | |
1159 | } | |
1160 | ||
1161 | /*-------------------------------------------------------------------------*/ | |
1162 | ||
1163 | #ifdef DEV_CONFIG_CDC | |
1164 | ||
907cba35 DB |
1165 | /* The interrupt endpoint is used in CDC networking models (Ethernet, ATM) |
1166 | * only to notify the host about link status changes (which we support) or | |
1167 | * report completion of some encapsulated command (as used in RNDIS). Since | |
1168 | * we want this CDC Ethernet code to be vendor-neutral, we don't use that | |
1169 | * command mechanism; and only one status request is ever queued. | |
1170 | */ | |
1171 | ||
1da177e4 LT |
1172 | static void eth_status_complete (struct usb_ep *ep, struct usb_request *req) |
1173 | { | |
1174 | struct usb_cdc_notification *event = req->buf; | |
1175 | int value = req->status; | |
1176 | struct eth_dev *dev = ep->driver_data; | |
1177 | ||
1178 | /* issue the second notification if host reads the first */ | |
1179 | if (event->bNotificationType == USB_CDC_NOTIFY_NETWORK_CONNECTION | |
1180 | && value == 0) { | |
1181 | __le32 *data = req->buf + sizeof *event; | |
1182 | ||
1183 | event->bmRequestType = 0xA1; | |
1184 | event->bNotificationType = USB_CDC_NOTIFY_SPEED_CHANGE; | |
1185 | event->wValue = __constant_cpu_to_le16 (0); | |
1186 | event->wIndex = __constant_cpu_to_le16 (1); | |
1187 | event->wLength = __constant_cpu_to_le16 (8); | |
1188 | ||
1189 | /* SPEED_CHANGE data is up/down speeds in bits/sec */ | |
1190 | data [0] = data [1] = cpu_to_le32 (BITRATE (dev->gadget)); | |
1191 | ||
1192 | req->length = STATUS_BYTECOUNT; | |
1193 | value = usb_ep_queue (ep, req, GFP_ATOMIC); | |
1194 | DEBUG (dev, "send SPEED_CHANGE --> %d\n", value); | |
1195 | if (value == 0) | |
1196 | return; | |
1197 | } else if (value != -ECONNRESET) | |
1198 | DEBUG (dev, "event %02x --> %d\n", | |
1199 | event->bNotificationType, value); | |
907cba35 | 1200 | req->context = NULL; |
1da177e4 LT |
1201 | } |
1202 | ||
1203 | static void issue_start_status (struct eth_dev *dev) | |
1204 | { | |
1205 | struct usb_request *req = dev->stat_req; | |
1206 | struct usb_cdc_notification *event; | |
1207 | int value; | |
7e27f18c | 1208 | |
1da177e4 LT |
1209 | DEBUG (dev, "%s, flush old status first\n", __FUNCTION__); |
1210 | ||
1211 | /* flush old status | |
1212 | * | |
1213 | * FIXME ugly idiom, maybe we'd be better with just | |
1214 | * a "cancel the whole queue" primitive since any | |
1215 | * unlink-one primitive has way too many error modes. | |
1216 | * here, we "know" toggle is already clear... | |
907cba35 DB |
1217 | * |
1218 | * FIXME iff req->context != null just dequeue it | |
1da177e4 LT |
1219 | */ |
1220 | usb_ep_disable (dev->status_ep); | |
1221 | usb_ep_enable (dev->status_ep, dev->status); | |
1222 | ||
1223 | /* 3.8.1 says to issue first NETWORK_CONNECTION, then | |
1224 | * a SPEED_CHANGE. could be useful in some configs. | |
1225 | */ | |
1226 | event = req->buf; | |
1227 | event->bmRequestType = 0xA1; | |
1228 | event->bNotificationType = USB_CDC_NOTIFY_NETWORK_CONNECTION; | |
1229 | event->wValue = __constant_cpu_to_le16 (1); /* connected */ | |
1230 | event->wIndex = __constant_cpu_to_le16 (1); | |
1231 | event->wLength = 0; | |
1232 | ||
1233 | req->length = sizeof *event; | |
1234 | req->complete = eth_status_complete; | |
907cba35 DB |
1235 | req->context = dev; |
1236 | ||
1da177e4 LT |
1237 | value = usb_ep_queue (dev->status_ep, req, GFP_ATOMIC); |
1238 | if (value < 0) | |
1239 | DEBUG (dev, "status buf queue --> %d\n", value); | |
1240 | } | |
1241 | ||
1242 | #endif | |
1243 | ||
1244 | /*-------------------------------------------------------------------------*/ | |
1245 | ||
1246 | static void eth_setup_complete (struct usb_ep *ep, struct usb_request *req) | |
1247 | { | |
1248 | if (req->status || req->actual != req->length) | |
1249 | DEBUG ((struct eth_dev *) ep->driver_data, | |
1250 | "setup complete --> %d, %d/%d\n", | |
1251 | req->status, req->actual, req->length); | |
1252 | } | |
1253 | ||
1254 | #ifdef CONFIG_USB_ETH_RNDIS | |
1255 | ||
1256 | static void rndis_response_complete (struct usb_ep *ep, struct usb_request *req) | |
1257 | { | |
1258 | if (req->status || req->actual != req->length) | |
1259 | DEBUG ((struct eth_dev *) ep->driver_data, | |
1260 | "rndis response complete --> %d, %d/%d\n", | |
1261 | req->status, req->actual, req->length); | |
1262 | ||
1263 | /* done sending after USB_CDC_GET_ENCAPSULATED_RESPONSE */ | |
1264 | } | |
1265 | ||
1266 | static void rndis_command_complete (struct usb_ep *ep, struct usb_request *req) | |
1267 | { | |
1268 | struct eth_dev *dev = ep->driver_data; | |
1269 | int status; | |
7e27f18c | 1270 | |
1da177e4 LT |
1271 | /* received RNDIS command from USB_CDC_SEND_ENCAPSULATED_COMMAND */ |
1272 | spin_lock(&dev->lock); | |
1273 | status = rndis_msg_parser (dev->rndis_config, (u8 *) req->buf); | |
1274 | if (status < 0) | |
1275 | ERROR(dev, "%s: rndis parse error %d\n", __FUNCTION__, status); | |
1276 | spin_unlock(&dev->lock); | |
1277 | } | |
1278 | ||
1279 | #endif /* RNDIS */ | |
1280 | ||
1281 | /* | |
1282 | * The setup() callback implements all the ep0 functionality that's not | |
1283 | * handled lower down. CDC has a number of less-common features: | |
1284 | * | |
1285 | * - two interfaces: control, and ethernet data | |
1286 | * - Ethernet data interface has two altsettings: default, and active | |
1287 | * - class-specific descriptors for the control interface | |
1288 | * - class-specific control requests | |
1289 | */ | |
1290 | static int | |
1291 | eth_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) | |
1292 | { | |
1293 | struct eth_dev *dev = get_gadget_data (gadget); | |
1294 | struct usb_request *req = dev->req; | |
1295 | int value = -EOPNOTSUPP; | |
1bbc1696 DB |
1296 | u16 wIndex = le16_to_cpu(ctrl->wIndex); |
1297 | u16 wValue = le16_to_cpu(ctrl->wValue); | |
1298 | u16 wLength = le16_to_cpu(ctrl->wLength); | |
1da177e4 LT |
1299 | |
1300 | /* descriptors just go into the pre-allocated ep0 buffer, | |
1301 | * while config change events may enable network traffic. | |
1302 | */ | |
1303 | req->complete = eth_setup_complete; | |
1304 | switch (ctrl->bRequest) { | |
1305 | ||
1306 | case USB_REQ_GET_DESCRIPTOR: | |
1307 | if (ctrl->bRequestType != USB_DIR_IN) | |
1308 | break; | |
1309 | switch (wValue >> 8) { | |
1310 | ||
1311 | case USB_DT_DEVICE: | |
1312 | value = min (wLength, (u16) sizeof device_desc); | |
1313 | memcpy (req->buf, &device_desc, value); | |
1314 | break; | |
1315 | #ifdef CONFIG_USB_GADGET_DUALSPEED | |
1316 | case USB_DT_DEVICE_QUALIFIER: | |
1317 | if (!gadget->is_dualspeed) | |
1318 | break; | |
1319 | value = min (wLength, (u16) sizeof dev_qualifier); | |
1320 | memcpy (req->buf, &dev_qualifier, value); | |
1321 | break; | |
1322 | ||
1323 | case USB_DT_OTHER_SPEED_CONFIG: | |
1324 | if (!gadget->is_dualspeed) | |
1325 | break; | |
1326 | // FALLTHROUGH | |
1327 | #endif /* CONFIG_USB_GADGET_DUALSPEED */ | |
1328 | case USB_DT_CONFIG: | |
1329 | value = config_buf (gadget->speed, req->buf, | |
1330 | wValue >> 8, | |
1331 | wValue & 0xff, | |
1332 | gadget->is_otg); | |
1333 | if (value >= 0) | |
1334 | value = min (wLength, (u16) value); | |
1335 | break; | |
1336 | ||
1337 | case USB_DT_STRING: | |
1338 | value = usb_gadget_get_string (&stringtab, | |
1339 | wValue & 0xff, req->buf); | |
1340 | if (value >= 0) | |
1341 | value = min (wLength, (u16) value); | |
1342 | break; | |
1343 | } | |
1344 | break; | |
1345 | ||
1346 | case USB_REQ_SET_CONFIGURATION: | |
1347 | if (ctrl->bRequestType != 0) | |
1348 | break; | |
1349 | if (gadget->a_hnp_support) | |
1350 | DEBUG (dev, "HNP available\n"); | |
1351 | else if (gadget->a_alt_hnp_support) | |
1352 | DEBUG (dev, "HNP needs a different root port\n"); | |
1353 | spin_lock (&dev->lock); | |
1354 | value = eth_set_config (dev, wValue, GFP_ATOMIC); | |
1355 | spin_unlock (&dev->lock); | |
1356 | break; | |
1357 | case USB_REQ_GET_CONFIGURATION: | |
1358 | if (ctrl->bRequestType != USB_DIR_IN) | |
1359 | break; | |
1360 | *(u8 *)req->buf = dev->config; | |
1361 | value = min (wLength, (u16) 1); | |
1362 | break; | |
1363 | ||
1364 | case USB_REQ_SET_INTERFACE: | |
1365 | if (ctrl->bRequestType != USB_RECIP_INTERFACE | |
1366 | || !dev->config | |
1367 | || wIndex > 1) | |
1368 | break; | |
45e45ab4 | 1369 | if (!cdc_active(dev) && wIndex != 0) |
1da177e4 LT |
1370 | break; |
1371 | spin_lock (&dev->lock); | |
1372 | ||
1373 | /* PXA hardware partially handles SET_INTERFACE; | |
1374 | * we need to kluge around that interference. | |
1375 | */ | |
1376 | if (gadget_is_pxa (gadget)) { | |
1377 | value = eth_set_config (dev, DEV_CONFIG_VALUE, | |
1378 | GFP_ATOMIC); | |
1379 | goto done_set_intf; | |
1380 | } | |
1381 | ||
1382 | #ifdef DEV_CONFIG_CDC | |
1383 | switch (wIndex) { | |
1384 | case 0: /* control/master intf */ | |
1385 | if (wValue != 0) | |
1386 | break; | |
1387 | if (dev->status) { | |
1388 | usb_ep_disable (dev->status_ep); | |
1389 | usb_ep_enable (dev->status_ep, dev->status); | |
1390 | } | |
1391 | value = 0; | |
1392 | break; | |
1393 | case 1: /* data intf */ | |
1394 | if (wValue > 1) | |
1395 | break; | |
1396 | usb_ep_disable (dev->in_ep); | |
1397 | usb_ep_disable (dev->out_ep); | |
1398 | ||
1399 | /* CDC requires the data transfers not be done from | |
1400 | * the default interface setting ... also, setting | |
907cba35 | 1401 | * the non-default interface resets filters etc. |
1da177e4 LT |
1402 | */ |
1403 | if (wValue == 1) { | |
907cba35 DB |
1404 | if (!cdc_active (dev)) |
1405 | break; | |
1da177e4 LT |
1406 | usb_ep_enable (dev->in_ep, dev->in); |
1407 | usb_ep_enable (dev->out_ep, dev->out); | |
1408 | dev->cdc_filter = DEFAULT_FILTER; | |
1409 | netif_carrier_on (dev->net); | |
1410 | if (dev->status) | |
1411 | issue_start_status (dev); | |
1412 | if (netif_running (dev->net)) { | |
1413 | spin_unlock (&dev->lock); | |
1414 | eth_start (dev, GFP_ATOMIC); | |
1415 | spin_lock (&dev->lock); | |
1416 | } | |
1417 | } else { | |
1418 | netif_stop_queue (dev->net); | |
1419 | netif_carrier_off (dev->net); | |
1420 | } | |
1421 | value = 0; | |
1422 | break; | |
1423 | } | |
1424 | #else | |
1425 | /* FIXME this is wrong, as is the assumption that | |
1426 | * all non-PXA hardware talks real CDC ... | |
1427 | */ | |
1428 | dev_warn (&gadget->dev, "set_interface ignored!\n"); | |
1429 | #endif /* DEV_CONFIG_CDC */ | |
1430 | ||
1431 | done_set_intf: | |
1432 | spin_unlock (&dev->lock); | |
1433 | break; | |
1434 | case USB_REQ_GET_INTERFACE: | |
1435 | if (ctrl->bRequestType != (USB_DIR_IN|USB_RECIP_INTERFACE) | |
1436 | || !dev->config | |
1437 | || wIndex > 1) | |
1438 | break; | |
45e45ab4 | 1439 | if (!(cdc_active(dev) || rndis_active(dev)) && wIndex != 0) |
1da177e4 LT |
1440 | break; |
1441 | ||
1442 | /* for CDC, iff carrier is on, data interface is active. */ | |
45e45ab4 | 1443 | if (rndis_active(dev) || wIndex != 1) |
1da177e4 LT |
1444 | *(u8 *)req->buf = 0; |
1445 | else | |
1446 | *(u8 *)req->buf = netif_carrier_ok (dev->net) ? 1 : 0; | |
1447 | value = min (wLength, (u16) 1); | |
1448 | break; | |
1449 | ||
1450 | #ifdef DEV_CONFIG_CDC | |
1451 | case USB_CDC_SET_ETHERNET_PACKET_FILTER: | |
1452 | /* see 6.2.30: no data, wIndex = interface, | |
1453 | * wValue = packet filter bitmap | |
1454 | */ | |
1455 | if (ctrl->bRequestType != (USB_TYPE_CLASS|USB_RECIP_INTERFACE) | |
45e45ab4 | 1456 | || !cdc_active(dev) |
1da177e4 LT |
1457 | || wLength != 0 |
1458 | || wIndex > 1) | |
1459 | break; | |
1460 | DEBUG (dev, "packet filter %02x\n", wValue); | |
1461 | dev->cdc_filter = wValue; | |
1462 | value = 0; | |
1463 | break; | |
1464 | ||
1465 | /* and potentially: | |
1466 | * case USB_CDC_SET_ETHERNET_MULTICAST_FILTERS: | |
1467 | * case USB_CDC_SET_ETHERNET_PM_PATTERN_FILTER: | |
1468 | * case USB_CDC_GET_ETHERNET_PM_PATTERN_FILTER: | |
1469 | * case USB_CDC_GET_ETHERNET_STATISTIC: | |
1470 | */ | |
1471 | ||
1472 | #endif /* DEV_CONFIG_CDC */ | |
1473 | ||
7e27f18c | 1474 | #ifdef CONFIG_USB_ETH_RNDIS |
1da177e4 LT |
1475 | /* RNDIS uses the CDC command encapsulation mechanism to implement |
1476 | * an RPC scheme, with much getting/setting of attributes by OID. | |
1477 | */ | |
1478 | case USB_CDC_SEND_ENCAPSULATED_COMMAND: | |
1479 | if (ctrl->bRequestType != (USB_TYPE_CLASS|USB_RECIP_INTERFACE) | |
45e45ab4 | 1480 | || !rndis_active(dev) |
1da177e4 LT |
1481 | || wLength > USB_BUFSIZ |
1482 | || wValue | |
1483 | || rndis_control_intf.bInterfaceNumber | |
1484 | != wIndex) | |
1485 | break; | |
1486 | /* read the request, then process it */ | |
1487 | value = wLength; | |
1488 | req->complete = rndis_command_complete; | |
1489 | /* later, rndis_control_ack () sends a notification */ | |
1490 | break; | |
7e27f18c | 1491 | |
1da177e4 LT |
1492 | case USB_CDC_GET_ENCAPSULATED_RESPONSE: |
1493 | if ((USB_DIR_IN|USB_TYPE_CLASS|USB_RECIP_INTERFACE) | |
1494 | == ctrl->bRequestType | |
45e45ab4 | 1495 | && rndis_active(dev) |
1da177e4 LT |
1496 | // && wLength >= 0x0400 |
1497 | && !wValue | |
1498 | && rndis_control_intf.bInterfaceNumber | |
1499 | == wIndex) { | |
1500 | u8 *buf; | |
1501 | ||
1502 | /* return the result */ | |
1503 | buf = rndis_get_next_response (dev->rndis_config, | |
1504 | &value); | |
1505 | if (buf) { | |
1506 | memcpy (req->buf, buf, value); | |
1507 | req->complete = rndis_response_complete; | |
1508 | rndis_free_response(dev->rndis_config, buf); | |
1509 | } | |
1510 | /* else stalls ... spec says to avoid that */ | |
1511 | } | |
1512 | break; | |
1513 | #endif /* RNDIS */ | |
1514 | ||
1515 | default: | |
1516 | VDEBUG (dev, | |
1517 | "unknown control req%02x.%02x v%04x i%04x l%d\n", | |
1518 | ctrl->bRequestType, ctrl->bRequest, | |
1519 | wValue, wIndex, wLength); | |
1520 | } | |
1521 | ||
1522 | /* respond with data transfer before status phase? */ | |
1523 | if (value >= 0) { | |
1524 | req->length = value; | |
1525 | req->zero = value < wLength | |
1526 | && (value % gadget->ep0->maxpacket) == 0; | |
1527 | value = usb_ep_queue (gadget->ep0, req, GFP_ATOMIC); | |
1528 | if (value < 0) { | |
1529 | DEBUG (dev, "ep_queue --> %d\n", value); | |
1530 | req->status = 0; | |
1531 | eth_setup_complete (gadget->ep0, req); | |
1532 | } | |
1533 | } | |
1534 | ||
1535 | /* host either stalls (value < 0) or reports success */ | |
1536 | return value; | |
1537 | } | |
1538 | ||
1539 | static void | |
1540 | eth_disconnect (struct usb_gadget *gadget) | |
1541 | { | |
1542 | struct eth_dev *dev = get_gadget_data (gadget); | |
1543 | unsigned long flags; | |
1544 | ||
1545 | spin_lock_irqsave (&dev->lock, flags); | |
1546 | netif_stop_queue (dev->net); | |
1547 | netif_carrier_off (dev->net); | |
1548 | eth_reset_config (dev); | |
1549 | spin_unlock_irqrestore (&dev->lock, flags); | |
1550 | ||
1551 | /* FIXME RNDIS should enter RNDIS_UNINITIALIZED */ | |
1552 | ||
1553 | /* next we may get setup() calls to enumerate new connections; | |
1554 | * or an unbind() during shutdown (including removing module). | |
1555 | */ | |
1556 | } | |
1557 | ||
1558 | /*-------------------------------------------------------------------------*/ | |
1559 | ||
1560 | /* NETWORK DRIVER HOOKUP (to the layer above this driver) */ | |
1561 | ||
1562 | static int eth_change_mtu (struct net_device *net, int new_mtu) | |
1563 | { | |
1564 | struct eth_dev *dev = netdev_priv(net); | |
1565 | ||
7802ac5c DB |
1566 | if (dev->rndis) |
1567 | return -EBUSY; | |
1da177e4 LT |
1568 | |
1569 | if (new_mtu <= ETH_HLEN || new_mtu > ETH_FRAME_LEN) | |
1570 | return -ERANGE; | |
1571 | /* no zero-length packet read wanted after mtu-sized packets */ | |
1572 | if (((new_mtu + sizeof (struct ethhdr)) % dev->in_ep->maxpacket) == 0) | |
1573 | return -EDOM; | |
1574 | net->mtu = new_mtu; | |
1575 | return 0; | |
1576 | } | |
1577 | ||
1578 | static struct net_device_stats *eth_get_stats (struct net_device *net) | |
1579 | { | |
1580 | return &((struct eth_dev *)netdev_priv(net))->stats; | |
1581 | } | |
1582 | ||
1583 | static void eth_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *p) | |
1584 | { | |
1585 | struct eth_dev *dev = netdev_priv(net); | |
1586 | strlcpy(p->driver, shortname, sizeof p->driver); | |
1587 | strlcpy(p->version, DRIVER_VERSION, sizeof p->version); | |
1588 | strlcpy(p->fw_version, dev->gadget->name, sizeof p->fw_version); | |
1589 | strlcpy (p->bus_info, dev->gadget->dev.bus_id, sizeof p->bus_info); | |
1590 | } | |
1591 | ||
1592 | static u32 eth_get_link(struct net_device *net) | |
1593 | { | |
1594 | struct eth_dev *dev = netdev_priv(net); | |
1595 | return dev->gadget->speed != USB_SPEED_UNKNOWN; | |
1596 | } | |
1597 | ||
1598 | static struct ethtool_ops ops = { | |
1599 | .get_drvinfo = eth_get_drvinfo, | |
1600 | .get_link = eth_get_link | |
1601 | }; | |
1602 | ||
1603 | static void defer_kevent (struct eth_dev *dev, int flag) | |
1604 | { | |
1605 | if (test_and_set_bit (flag, &dev->todo)) | |
1606 | return; | |
1607 | if (!schedule_work (&dev->work)) | |
1608 | ERROR (dev, "kevent %d may have been dropped\n", flag); | |
1609 | else | |
1610 | DEBUG (dev, "kevent %d scheduled\n", flag); | |
1611 | } | |
1612 | ||
1613 | static void rx_complete (struct usb_ep *ep, struct usb_request *req); | |
1614 | ||
1615 | static int | |
55016f10 | 1616 | rx_submit (struct eth_dev *dev, struct usb_request *req, gfp_t gfp_flags) |
1da177e4 LT |
1617 | { |
1618 | struct sk_buff *skb; | |
1619 | int retval = -ENOMEM; | |
1620 | size_t size; | |
1621 | ||
1622 | /* Padding up to RX_EXTRA handles minor disagreements with host. | |
1623 | * Normally we use the USB "terminate on short read" convention; | |
1624 | * so allow up to (N*maxpacket), since that memory is normally | |
1625 | * already allocated. Some hardware doesn't deal well with short | |
1626 | * reads (e.g. DMA must be N*maxpacket), so for now don't trim a | |
1627 | * byte off the end (to force hardware errors on overflow). | |
1628 | * | |
1629 | * RNDIS uses internal framing, and explicitly allows senders to | |
1630 | * pad to end-of-packet. That's potentially nice for speed, | |
1631 | * but means receivers can't recover synch on their own. | |
1632 | */ | |
1633 | size = (sizeof (struct ethhdr) + dev->net->mtu + RX_EXTRA); | |
1634 | size += dev->out_ep->maxpacket - 1; | |
907cba35 | 1635 | if (rndis_active(dev)) |
1da177e4 | 1636 | size += sizeof (struct rndis_packet_msg_type); |
1da177e4 LT |
1637 | size -= size % dev->out_ep->maxpacket; |
1638 | ||
1639 | if ((skb = alloc_skb (size + NET_IP_ALIGN, gfp_flags)) == 0) { | |
1640 | DEBUG (dev, "no rx skb\n"); | |
1641 | goto enomem; | |
1642 | } | |
7e27f18c | 1643 | |
1da177e4 LT |
1644 | /* Some platforms perform better when IP packets are aligned, |
1645 | * but on at least one, checksumming fails otherwise. Note: | |
6cdee106 | 1646 | * RNDIS headers involve variable numbers of LE32 values. |
1da177e4 LT |
1647 | */ |
1648 | skb_reserve(skb, NET_IP_ALIGN); | |
1649 | ||
1650 | req->buf = skb->data; | |
1651 | req->length = size; | |
1652 | req->complete = rx_complete; | |
1653 | req->context = skb; | |
1654 | ||
1655 | retval = usb_ep_queue (dev->out_ep, req, gfp_flags); | |
1656 | if (retval == -ENOMEM) | |
1657 | enomem: | |
1658 | defer_kevent (dev, WORK_RX_MEMORY); | |
1659 | if (retval) { | |
1660 | DEBUG (dev, "rx submit --> %d\n", retval); | |
1661 | dev_kfree_skb_any (skb); | |
1662 | spin_lock (&dev->lock); | |
1663 | list_add (&req->list, &dev->rx_reqs); | |
1664 | spin_unlock (&dev->lock); | |
1665 | } | |
1666 | return retval; | |
1667 | } | |
1668 | ||
1669 | static void rx_complete (struct usb_ep *ep, struct usb_request *req) | |
1670 | { | |
1671 | struct sk_buff *skb = req->context; | |
1672 | struct eth_dev *dev = ep->driver_data; | |
1673 | int status = req->status; | |
1674 | ||
1675 | switch (status) { | |
1676 | ||
1677 | /* normal completion */ | |
1678 | case 0: | |
1679 | skb_put (skb, req->actual); | |
1da177e4 | 1680 | /* we know MaxPacketsPerTransfer == 1 here */ |
45e45ab4 | 1681 | if (rndis_active(dev)) |
6cdee106 | 1682 | status = rndis_rm_hdr (skb); |
6cdee106 DB |
1683 | if (status < 0 |
1684 | || ETH_HLEN > skb->len | |
1685 | || skb->len > ETH_FRAME_LEN) { | |
1da177e4 LT |
1686 | dev->stats.rx_errors++; |
1687 | dev->stats.rx_length_errors++; | |
1688 | DEBUG (dev, "rx length %d\n", skb->len); | |
1689 | break; | |
1690 | } | |
1691 | ||
1692 | skb->dev = dev->net; | |
1693 | skb->protocol = eth_type_trans (skb, dev->net); | |
1694 | dev->stats.rx_packets++; | |
1695 | dev->stats.rx_bytes += skb->len; | |
1696 | ||
1697 | /* no buffer copies needed, unless hardware can't | |
1698 | * use skb buffers. | |
1699 | */ | |
1700 | status = netif_rx (skb); | |
1701 | skb = NULL; | |
1702 | break; | |
1703 | ||
1704 | /* software-driven interface shutdown */ | |
1705 | case -ECONNRESET: // unlink | |
1706 | case -ESHUTDOWN: // disconnect etc | |
1707 | VDEBUG (dev, "rx shutdown, code %d\n", status); | |
1708 | goto quiesce; | |
1709 | ||
1710 | /* for hardware automagic (such as pxa) */ | |
1711 | case -ECONNABORTED: // endpoint reset | |
1712 | DEBUG (dev, "rx %s reset\n", ep->name); | |
1713 | defer_kevent (dev, WORK_RX_MEMORY); | |
1714 | quiesce: | |
1715 | dev_kfree_skb_any (skb); | |
1716 | goto clean; | |
1717 | ||
1718 | /* data overrun */ | |
1719 | case -EOVERFLOW: | |
1720 | dev->stats.rx_over_errors++; | |
1721 | // FALLTHROUGH | |
7e27f18c | 1722 | |
1da177e4 LT |
1723 | default: |
1724 | dev->stats.rx_errors++; | |
1725 | DEBUG (dev, "rx status %d\n", status); | |
1726 | break; | |
1727 | } | |
1728 | ||
1729 | if (skb) | |
1730 | dev_kfree_skb_any (skb); | |
1731 | if (!netif_running (dev->net)) { | |
1732 | clean: | |
1733 | /* nobody reading rx_reqs, so no dev->lock */ | |
1734 | list_add (&req->list, &dev->rx_reqs); | |
1735 | req = NULL; | |
1736 | } | |
1737 | if (req) | |
1738 | rx_submit (dev, req, GFP_ATOMIC); | |
1739 | } | |
1740 | ||
1741 | static int prealloc (struct list_head *list, struct usb_ep *ep, | |
55016f10 | 1742 | unsigned n, gfp_t gfp_flags) |
1da177e4 LT |
1743 | { |
1744 | unsigned i; | |
1745 | struct usb_request *req; | |
1746 | ||
1747 | if (!n) | |
1748 | return -ENOMEM; | |
1749 | ||
1750 | /* queue/recycle up to N requests */ | |
1751 | i = n; | |
1752 | list_for_each_entry (req, list, list) { | |
1753 | if (i-- == 0) | |
1754 | goto extra; | |
1755 | } | |
1756 | while (i--) { | |
1757 | req = usb_ep_alloc_request (ep, gfp_flags); | |
1758 | if (!req) | |
1759 | return list_empty (list) ? -ENOMEM : 0; | |
1760 | list_add (&req->list, list); | |
1761 | } | |
1762 | return 0; | |
1763 | ||
1764 | extra: | |
1765 | /* free extras */ | |
1766 | for (;;) { | |
1767 | struct list_head *next; | |
1768 | ||
1769 | next = req->list.next; | |
1770 | list_del (&req->list); | |
1771 | usb_ep_free_request (ep, req); | |
1772 | ||
1773 | if (next == list) | |
1774 | break; | |
1775 | ||
1776 | req = container_of (next, struct usb_request, list); | |
1777 | } | |
1778 | return 0; | |
1779 | } | |
1780 | ||
55016f10 | 1781 | static int alloc_requests (struct eth_dev *dev, unsigned n, gfp_t gfp_flags) |
1da177e4 LT |
1782 | { |
1783 | int status; | |
1784 | ||
1785 | status = prealloc (&dev->tx_reqs, dev->in_ep, n, gfp_flags); | |
1786 | if (status < 0) | |
1787 | goto fail; | |
1788 | status = prealloc (&dev->rx_reqs, dev->out_ep, n, gfp_flags); | |
1789 | if (status < 0) | |
1790 | goto fail; | |
1791 | return 0; | |
1792 | fail: | |
1793 | DEBUG (dev, "can't alloc requests\n"); | |
1794 | return status; | |
1795 | } | |
1796 | ||
55016f10 | 1797 | static void rx_fill (struct eth_dev *dev, gfp_t gfp_flags) |
1da177e4 LT |
1798 | { |
1799 | struct usb_request *req; | |
1800 | unsigned long flags; | |
1801 | ||
1da177e4 LT |
1802 | /* fill unused rxq slots with some skb */ |
1803 | spin_lock_irqsave (&dev->lock, flags); | |
1804 | while (!list_empty (&dev->rx_reqs)) { | |
1805 | req = container_of (dev->rx_reqs.next, | |
1806 | struct usb_request, list); | |
1807 | list_del_init (&req->list); | |
1808 | spin_unlock_irqrestore (&dev->lock, flags); | |
1809 | ||
1810 | if (rx_submit (dev, req, gfp_flags) < 0) { | |
1811 | defer_kevent (dev, WORK_RX_MEMORY); | |
1812 | return; | |
1813 | } | |
1814 | ||
1815 | spin_lock_irqsave (&dev->lock, flags); | |
1816 | } | |
1817 | spin_unlock_irqrestore (&dev->lock, flags); | |
1818 | } | |
1819 | ||
1820 | static void eth_work (void *_dev) | |
1821 | { | |
1822 | struct eth_dev *dev = _dev; | |
1823 | ||
907cba35 | 1824 | if (test_and_clear_bit (WORK_RX_MEMORY, &dev->todo)) { |
1da177e4 LT |
1825 | if (netif_running (dev->net)) |
1826 | rx_fill (dev, GFP_KERNEL); | |
1da177e4 LT |
1827 | } |
1828 | ||
1829 | if (dev->todo) | |
1830 | DEBUG (dev, "work done, flags = 0x%lx\n", dev->todo); | |
1831 | } | |
1832 | ||
1833 | static void tx_complete (struct usb_ep *ep, struct usb_request *req) | |
1834 | { | |
1835 | struct sk_buff *skb = req->context; | |
1836 | struct eth_dev *dev = ep->driver_data; | |
1837 | ||
1838 | switch (req->status) { | |
1839 | default: | |
1840 | dev->stats.tx_errors++; | |
1841 | VDEBUG (dev, "tx err %d\n", req->status); | |
1842 | /* FALLTHROUGH */ | |
1843 | case -ECONNRESET: // unlink | |
1844 | case -ESHUTDOWN: // disconnect etc | |
1845 | break; | |
1846 | case 0: | |
1847 | dev->stats.tx_bytes += skb->len; | |
1848 | } | |
1849 | dev->stats.tx_packets++; | |
1850 | ||
1851 | spin_lock (&dev->lock); | |
1852 | list_add (&req->list, &dev->tx_reqs); | |
1853 | spin_unlock (&dev->lock); | |
1854 | dev_kfree_skb_any (skb); | |
1855 | ||
1856 | atomic_dec (&dev->tx_qlen); | |
1857 | if (netif_carrier_ok (dev->net)) | |
1858 | netif_wake_queue (dev->net); | |
1859 | } | |
1860 | ||
1861 | static inline int eth_is_promisc (struct eth_dev *dev) | |
1862 | { | |
1863 | /* no filters for the CDC subset; always promisc */ | |
1864 | if (subset_active (dev)) | |
1865 | return 1; | |
1866 | return dev->cdc_filter & USB_CDC_PACKET_TYPE_PROMISCUOUS; | |
1867 | } | |
1868 | ||
1869 | static int eth_start_xmit (struct sk_buff *skb, struct net_device *net) | |
1870 | { | |
1871 | struct eth_dev *dev = netdev_priv(net); | |
1872 | int length = skb->len; | |
1873 | int retval; | |
1874 | struct usb_request *req = NULL; | |
1875 | unsigned long flags; | |
1876 | ||
1877 | /* apply outgoing CDC or RNDIS filters */ | |
1878 | if (!eth_is_promisc (dev)) { | |
1879 | u8 *dest = skb->data; | |
1880 | ||
1881 | if (dest [0] & 0x01) { | |
1882 | u16 type; | |
1883 | ||
1884 | /* ignores USB_CDC_PACKET_TYPE_MULTICAST and host | |
1885 | * SET_ETHERNET_MULTICAST_FILTERS requests | |
1886 | */ | |
1887 | if (memcmp (dest, net->broadcast, ETH_ALEN) == 0) | |
1888 | type = USB_CDC_PACKET_TYPE_BROADCAST; | |
1889 | else | |
1890 | type = USB_CDC_PACKET_TYPE_ALL_MULTICAST; | |
1891 | if (!(dev->cdc_filter & type)) { | |
1892 | dev_kfree_skb_any (skb); | |
1893 | return 0; | |
1894 | } | |
1895 | } | |
1896 | /* ignores USB_CDC_PACKET_TYPE_DIRECTED */ | |
1897 | } | |
1898 | ||
1899 | spin_lock_irqsave (&dev->lock, flags); | |
1900 | req = container_of (dev->tx_reqs.next, struct usb_request, list); | |
1901 | list_del (&req->list); | |
1902 | if (list_empty (&dev->tx_reqs)) | |
1903 | netif_stop_queue (net); | |
1904 | spin_unlock_irqrestore (&dev->lock, flags); | |
1905 | ||
1906 | /* no buffer copies needed, unless the network stack did it | |
1907 | * or the hardware can't use skb buffers. | |
1908 | * or there's not enough space for any RNDIS headers we need | |
1909 | */ | |
45e45ab4 | 1910 | if (rndis_active(dev)) { |
1da177e4 LT |
1911 | struct sk_buff *skb_rndis; |
1912 | ||
1913 | skb_rndis = skb_realloc_headroom (skb, | |
1914 | sizeof (struct rndis_packet_msg_type)); | |
1915 | if (!skb_rndis) | |
1916 | goto drop; | |
7e27f18c | 1917 | |
1da177e4 LT |
1918 | dev_kfree_skb_any (skb); |
1919 | skb = skb_rndis; | |
1920 | rndis_add_hdr (skb); | |
1921 | length = skb->len; | |
1922 | } | |
1da177e4 LT |
1923 | req->buf = skb->data; |
1924 | req->context = skb; | |
1925 | req->complete = tx_complete; | |
1926 | ||
1927 | /* use zlp framing on tx for strict CDC-Ether conformance, | |
1928 | * though any robust network rx path ignores extra padding. | |
1929 | * and some hardware doesn't like to write zlps. | |
1930 | */ | |
1931 | req->zero = 1; | |
1932 | if (!dev->zlp && (length % dev->in_ep->maxpacket) == 0) | |
1933 | length++; | |
1934 | ||
1935 | req->length = length; | |
1936 | ||
1937 | #ifdef CONFIG_USB_GADGET_DUALSPEED | |
1938 | /* throttle highspeed IRQ rate back slightly */ | |
1939 | req->no_interrupt = (dev->gadget->speed == USB_SPEED_HIGH) | |
1940 | ? ((atomic_read (&dev->tx_qlen) % TX_DELAY) != 0) | |
1941 | : 0; | |
1942 | #endif | |
1943 | ||
1944 | retval = usb_ep_queue (dev->in_ep, req, GFP_ATOMIC); | |
1945 | switch (retval) { | |
1946 | default: | |
1947 | DEBUG (dev, "tx queue err %d\n", retval); | |
1948 | break; | |
1949 | case 0: | |
1950 | net->trans_start = jiffies; | |
1951 | atomic_inc (&dev->tx_qlen); | |
1952 | } | |
1953 | ||
1954 | if (retval) { | |
1da177e4 | 1955 | drop: |
1da177e4 LT |
1956 | dev->stats.tx_dropped++; |
1957 | dev_kfree_skb_any (skb); | |
1958 | spin_lock_irqsave (&dev->lock, flags); | |
1959 | if (list_empty (&dev->tx_reqs)) | |
1960 | netif_start_queue (net); | |
1961 | list_add (&req->list, &dev->tx_reqs); | |
1962 | spin_unlock_irqrestore (&dev->lock, flags); | |
1963 | } | |
1964 | return 0; | |
1965 | } | |
1966 | ||
1967 | /*-------------------------------------------------------------------------*/ | |
1968 | ||
1969 | #ifdef CONFIG_USB_ETH_RNDIS | |
1970 | ||
907cba35 DB |
1971 | /* The interrupt endpoint is used in RNDIS to notify the host when messages |
1972 | * other than data packets are available ... notably the REMOTE_NDIS_*_CMPLT | |
1973 | * messages, but also REMOTE_NDIS_INDICATE_STATUS_MSG and potentially even | |
1974 | * REMOTE_NDIS_KEEPALIVE_MSG. | |
1975 | * | |
1976 | * The RNDIS control queue is processed by GET_ENCAPSULATED_RESPONSE, and | |
1977 | * normally just one notification will be queued. | |
1978 | */ | |
1979 | ||
55016f10 | 1980 | static struct usb_request *eth_req_alloc (struct usb_ep *, unsigned, gfp_t); |
907cba35 | 1981 | static void eth_req_free (struct usb_ep *ep, struct usb_request *req); |
1da177e4 LT |
1982 | |
1983 | static void | |
1984 | rndis_control_ack_complete (struct usb_ep *ep, struct usb_request *req) | |
1985 | { | |
907cba35 DB |
1986 | struct eth_dev *dev = ep->driver_data; |
1987 | ||
1da177e4 | 1988 | if (req->status || req->actual != req->length) |
907cba35 | 1989 | DEBUG (dev, |
1da177e4 LT |
1990 | "rndis control ack complete --> %d, %d/%d\n", |
1991 | req->status, req->actual, req->length); | |
907cba35 DB |
1992 | req->context = NULL; |
1993 | ||
1994 | if (req != dev->stat_req) | |
1995 | eth_req_free(ep, req); | |
1da177e4 LT |
1996 | } |
1997 | ||
1998 | static int rndis_control_ack (struct net_device *net) | |
1999 | { | |
2000 | struct eth_dev *dev = netdev_priv(net); | |
2001 | u32 length; | |
6cdee106 | 2002 | struct usb_request *resp = dev->stat_req; |
7e27f18c | 2003 | |
1da177e4 | 2004 | /* in case RNDIS calls this after disconnect */ |
6cdee106 | 2005 | if (!dev->status) { |
1da177e4 LT |
2006 | DEBUG (dev, "status ENODEV\n"); |
2007 | return -ENODEV; | |
2008 | } | |
2009 | ||
907cba35 DB |
2010 | /* in case queue length > 1 */ |
2011 | if (resp->context) { | |
2012 | resp = eth_req_alloc (dev->status_ep, 8, GFP_ATOMIC); | |
2013 | if (!resp) | |
2014 | return -ENOMEM; | |
2015 | } | |
2016 | ||
1da177e4 LT |
2017 | /* Send RNDIS RESPONSE_AVAILABLE notification; |
2018 | * USB_CDC_NOTIFY_RESPONSE_AVAILABLE should work too | |
2019 | */ | |
2020 | resp->length = 8; | |
2021 | resp->complete = rndis_control_ack_complete; | |
907cba35 | 2022 | resp->context = dev; |
7e27f18c | 2023 | |
1da177e4 LT |
2024 | *((__le32 *) resp->buf) = __constant_cpu_to_le32 (1); |
2025 | *((__le32 *) resp->buf + 1) = __constant_cpu_to_le32 (0); | |
7e27f18c | 2026 | |
1da177e4 LT |
2027 | length = usb_ep_queue (dev->status_ep, resp, GFP_ATOMIC); |
2028 | if (length < 0) { | |
2029 | resp->status = 0; | |
2030 | rndis_control_ack_complete (dev->status_ep, resp); | |
2031 | } | |
7e27f18c | 2032 | |
1da177e4 LT |
2033 | return 0; |
2034 | } | |
2035 | ||
45e45ab4 DB |
2036 | #else |
2037 | ||
2038 | #define rndis_control_ack NULL | |
2039 | ||
1da177e4 LT |
2040 | #endif /* RNDIS */ |
2041 | ||
55016f10 | 2042 | static void eth_start (struct eth_dev *dev, gfp_t gfp_flags) |
1da177e4 LT |
2043 | { |
2044 | DEBUG (dev, "%s\n", __FUNCTION__); | |
2045 | ||
2046 | /* fill the rx queue */ | |
2047 | rx_fill (dev, gfp_flags); | |
2048 | ||
7e27f18c | 2049 | /* and open the tx floodgates */ |
1da177e4 LT |
2050 | atomic_set (&dev->tx_qlen, 0); |
2051 | netif_wake_queue (dev->net); | |
45e45ab4 | 2052 | if (rndis_active(dev)) { |
1da177e4 LT |
2053 | rndis_set_param_medium (dev->rndis_config, |
2054 | NDIS_MEDIUM_802_3, | |
6cdee106 | 2055 | BITRATE(dev->gadget)/100); |
907cba35 | 2056 | (void) rndis_signal_connect (dev->rndis_config); |
1da177e4 | 2057 | } |
1da177e4 LT |
2058 | } |
2059 | ||
2060 | static int eth_open (struct net_device *net) | |
2061 | { | |
2062 | struct eth_dev *dev = netdev_priv(net); | |
2063 | ||
2064 | DEBUG (dev, "%s\n", __FUNCTION__); | |
2065 | if (netif_carrier_ok (dev->net)) | |
2066 | eth_start (dev, GFP_KERNEL); | |
2067 | return 0; | |
2068 | } | |
2069 | ||
2070 | static int eth_stop (struct net_device *net) | |
2071 | { | |
2072 | struct eth_dev *dev = netdev_priv(net); | |
2073 | ||
2074 | VDEBUG (dev, "%s\n", __FUNCTION__); | |
2075 | netif_stop_queue (net); | |
2076 | ||
2077 | DEBUG (dev, "stop stats: rx/tx %ld/%ld, errs %ld/%ld\n", | |
7e27f18c | 2078 | dev->stats.rx_packets, dev->stats.tx_packets, |
1da177e4 LT |
2079 | dev->stats.rx_errors, dev->stats.tx_errors |
2080 | ); | |
2081 | ||
2082 | /* ensure there are no more active requests */ | |
2083 | if (dev->config) { | |
2084 | usb_ep_disable (dev->in_ep); | |
2085 | usb_ep_disable (dev->out_ep); | |
2086 | if (netif_carrier_ok (dev->net)) { | |
2087 | DEBUG (dev, "host still using in/out endpoints\n"); | |
2088 | // FIXME idiom may leave toggle wrong here | |
2089 | usb_ep_enable (dev->in_ep, dev->in); | |
2090 | usb_ep_enable (dev->out_ep, dev->out); | |
2091 | } | |
2092 | if (dev->status_ep) { | |
2093 | usb_ep_disable (dev->status_ep); | |
2094 | usb_ep_enable (dev->status_ep, dev->status); | |
2095 | } | |
2096 | } | |
7e27f18c | 2097 | |
45e45ab4 | 2098 | if (rndis_active(dev)) { |
1da177e4 LT |
2099 | rndis_set_param_medium (dev->rndis_config, |
2100 | NDIS_MEDIUM_802_3, 0); | |
907cba35 | 2101 | (void) rndis_signal_disconnect (dev->rndis_config); |
1da177e4 | 2102 | } |
1da177e4 LT |
2103 | |
2104 | return 0; | |
2105 | } | |
2106 | ||
2107 | /*-------------------------------------------------------------------------*/ | |
2108 | ||
907cba35 | 2109 | static struct usb_request * |
55016f10 | 2110 | eth_req_alloc (struct usb_ep *ep, unsigned size, gfp_t gfp_flags) |
1da177e4 LT |
2111 | { |
2112 | struct usb_request *req; | |
2113 | ||
907cba35 | 2114 | req = usb_ep_alloc_request (ep, gfp_flags); |
1da177e4 LT |
2115 | if (!req) |
2116 | return NULL; | |
2117 | ||
907cba35 | 2118 | req->buf = kmalloc (size, gfp_flags); |
1da177e4 LT |
2119 | if (!req->buf) { |
2120 | usb_ep_free_request (ep, req); | |
2121 | req = NULL; | |
2122 | } | |
2123 | return req; | |
2124 | } | |
2125 | ||
2126 | static void | |
2127 | eth_req_free (struct usb_ep *ep, struct usb_request *req) | |
2128 | { | |
2129 | kfree (req->buf); | |
2130 | usb_ep_free_request (ep, req); | |
2131 | } | |
2132 | ||
2133 | ||
329af28b | 2134 | static void __exit |
1da177e4 LT |
2135 | eth_unbind (struct usb_gadget *gadget) |
2136 | { | |
2137 | struct eth_dev *dev = get_gadget_data (gadget); | |
2138 | ||
2139 | DEBUG (dev, "unbind\n"); | |
1da177e4 LT |
2140 | rndis_deregister (dev->rndis_config); |
2141 | rndis_exit (); | |
1da177e4 LT |
2142 | |
2143 | /* we've already been disconnected ... no i/o is active */ | |
2144 | if (dev->req) { | |
2145 | eth_req_free (gadget->ep0, dev->req); | |
2146 | dev->req = NULL; | |
2147 | } | |
2148 | if (dev->stat_req) { | |
2149 | eth_req_free (dev->status_ep, dev->stat_req); | |
2150 | dev->stat_req = NULL; | |
2151 | } | |
2152 | ||
2153 | unregister_netdev (dev->net); | |
2154 | free_netdev(dev->net); | |
2155 | ||
2156 | /* assuming we used keventd, it must quiesce too */ | |
2157 | flush_scheduled_work (); | |
2158 | set_gadget_data (gadget, NULL); | |
2159 | } | |
2160 | ||
2161 | static u8 __init nibble (unsigned char c) | |
2162 | { | |
2163 | if (likely (isdigit (c))) | |
2164 | return c - '0'; | |
2165 | c = toupper (c); | |
2166 | if (likely (isxdigit (c))) | |
2167 | return 10 + c - 'A'; | |
2168 | return 0; | |
2169 | } | |
2170 | ||
1afc64a3 | 2171 | static int __init get_ether_addr(const char *str, u8 *dev_addr) |
1da177e4 LT |
2172 | { |
2173 | if (str) { | |
2174 | unsigned i; | |
2175 | ||
2176 | for (i = 0; i < 6; i++) { | |
2177 | unsigned char num; | |
2178 | ||
2179 | if((*str == '.') || (*str == ':')) | |
2180 | str++; | |
2181 | num = nibble(*str++) << 4; | |
2182 | num |= (nibble(*str++)); | |
2183 | dev_addr [i] = num; | |
2184 | } | |
2185 | if (is_valid_ether_addr (dev_addr)) | |
1afc64a3 | 2186 | return 0; |
1da177e4 LT |
2187 | } |
2188 | random_ether_addr(dev_addr); | |
1afc64a3 | 2189 | return 1; |
1da177e4 LT |
2190 | } |
2191 | ||
2192 | static int __init | |
2193 | eth_bind (struct usb_gadget *gadget) | |
2194 | { | |
2195 | struct eth_dev *dev; | |
2196 | struct net_device *net; | |
2197 | u8 cdc = 1, zlp = 1, rndis = 1; | |
2198 | struct usb_ep *in_ep, *out_ep, *status_ep = NULL; | |
2199 | int status = -ENOMEM; | |
91e79c91 | 2200 | int gcnum; |
1da177e4 LT |
2201 | |
2202 | /* these flags are only ever cleared; compiler take note */ | |
2203 | #ifndef DEV_CONFIG_CDC | |
2204 | cdc = 0; | |
2205 | #endif | |
2206 | #ifndef CONFIG_USB_ETH_RNDIS | |
2207 | rndis = 0; | |
2208 | #endif | |
2209 | ||
2210 | /* Because most host side USB stacks handle CDC Ethernet, that | |
2211 | * standard protocol is _strongly_ preferred for interop purposes. | |
2212 | * (By everyone except Microsoft.) | |
2213 | */ | |
91e79c91 | 2214 | if (gadget_is_pxa (gadget)) { |
1da177e4 LT |
2215 | /* pxa doesn't support altsettings */ |
2216 | cdc = 0; | |
2217 | } else if (gadget_is_sh(gadget)) { | |
1da177e4 LT |
2218 | /* sh doesn't support multiple interfaces or configs */ |
2219 | cdc = 0; | |
2220 | rndis = 0; | |
2221 | } else if (gadget_is_sa1100 (gadget)) { | |
1da177e4 LT |
2222 | /* hardware can't write zlps */ |
2223 | zlp = 0; | |
2224 | /* sa1100 CAN do CDC, without status endpoint ... we use | |
2225 | * non-CDC to be compatible with ARM Linux-2.4 "usb-eth". | |
2226 | */ | |
2227 | cdc = 0; | |
91e79c91 DB |
2228 | } |
2229 | ||
2230 | gcnum = usb_gadget_controller_number (gadget); | |
2231 | if (gcnum >= 0) | |
2232 | device_desc.bcdDevice = cpu_to_le16 (0x0200 + gcnum); | |
2233 | else { | |
1da177e4 LT |
2234 | /* can't assume CDC works. don't want to default to |
2235 | * anything less functional on CDC-capable hardware, | |
2236 | * so we fail in this case. | |
2237 | */ | |
2238 | dev_err (&gadget->dev, | |
2239 | "controller '%s' not recognized\n", | |
2240 | gadget->name); | |
2241 | return -ENODEV; | |
2242 | } | |
2243 | snprintf (manufacturer, sizeof manufacturer, "%s %s/%s", | |
2244 | system_utsname.sysname, system_utsname.release, | |
2245 | gadget->name); | |
2246 | ||
2247 | /* If there's an RNDIS configuration, that's what Windows wants to | |
2248 | * be using ... so use these product IDs here and in the "linux.inf" | |
2249 | * needed to install MSFT drivers. Current Linux kernels will use | |
2250 | * the second configuration if it's CDC Ethernet, and need some help | |
2251 | * to choose the right configuration otherwise. | |
2252 | */ | |
2253 | if (rndis) { | |
2254 | device_desc.idVendor = | |
2255 | __constant_cpu_to_le16(RNDIS_VENDOR_NUM); | |
2256 | device_desc.idProduct = | |
2257 | __constant_cpu_to_le16(RNDIS_PRODUCT_NUM); | |
2258 | snprintf (product_desc, sizeof product_desc, | |
2259 | "RNDIS/%s", driver_desc); | |
2260 | ||
2261 | /* CDC subset ... recognized by Linux since 2.4.10, but Windows | |
2262 | * drivers aren't widely available. | |
2263 | */ | |
2264 | } else if (!cdc) { | |
2265 | device_desc.bDeviceClass = USB_CLASS_VENDOR_SPEC; | |
2266 | device_desc.idVendor = | |
2267 | __constant_cpu_to_le16(SIMPLE_VENDOR_NUM); | |
2268 | device_desc.idProduct = | |
2269 | __constant_cpu_to_le16(SIMPLE_PRODUCT_NUM); | |
2270 | } | |
2271 | ||
2272 | /* support optional vendor/distro customization */ | |
2273 | if (idVendor) { | |
2274 | if (!idProduct) { | |
2275 | dev_err (&gadget->dev, "idVendor needs idProduct!\n"); | |
2276 | return -ENODEV; | |
2277 | } | |
2278 | device_desc.idVendor = cpu_to_le16(idVendor); | |
2279 | device_desc.idProduct = cpu_to_le16(idProduct); | |
2280 | if (bcdDevice) | |
2281 | device_desc.bcdDevice = cpu_to_le16(bcdDevice); | |
2282 | } | |
2283 | if (iManufacturer) | |
2284 | strlcpy (manufacturer, iManufacturer, sizeof manufacturer); | |
2285 | if (iProduct) | |
2286 | strlcpy (product_desc, iProduct, sizeof product_desc); | |
1afc64a3 AV |
2287 | if (iSerialNumber) { |
2288 | device_desc.iSerialNumber = STRING_SERIALNUMBER, | |
2289 | strlcpy(serial_number, iSerialNumber, sizeof serial_number); | |
2290 | } | |
1da177e4 LT |
2291 | |
2292 | /* all we really need is bulk IN/OUT */ | |
2293 | usb_ep_autoconfig_reset (gadget); | |
2294 | in_ep = usb_ep_autoconfig (gadget, &fs_source_desc); | |
2295 | if (!in_ep) { | |
2296 | autoconf_fail: | |
2297 | dev_err (&gadget->dev, | |
2298 | "can't autoconfigure on %s\n", | |
2299 | gadget->name); | |
2300 | return -ENODEV; | |
2301 | } | |
1da177e4 | 2302 | in_ep->driver_data = in_ep; /* claim */ |
7e27f18c | 2303 | |
1da177e4 LT |
2304 | out_ep = usb_ep_autoconfig (gadget, &fs_sink_desc); |
2305 | if (!out_ep) | |
2306 | goto autoconf_fail; | |
1da177e4 LT |
2307 | out_ep->driver_data = out_ep; /* claim */ |
2308 | ||
2309 | #if defined(DEV_CONFIG_CDC) || defined(CONFIG_USB_ETH_RNDIS) | |
2310 | /* CDC Ethernet control interface doesn't require a status endpoint. | |
2311 | * Since some hosts expect one, try to allocate one anyway. | |
2312 | */ | |
2313 | if (cdc || rndis) { | |
2314 | status_ep = usb_ep_autoconfig (gadget, &fs_status_desc); | |
2315 | if (status_ep) { | |
1da177e4 LT |
2316 | status_ep->driver_data = status_ep; /* claim */ |
2317 | } else if (rndis) { | |
2318 | dev_err (&gadget->dev, | |
2319 | "can't run RNDIS on %s\n", | |
2320 | gadget->name); | |
2321 | return -ENODEV; | |
2322 | #ifdef DEV_CONFIG_CDC | |
2323 | /* pxa25x only does CDC subset; often used with RNDIS */ | |
2324 | } else if (cdc) { | |
2325 | control_intf.bNumEndpoints = 0; | |
2326 | /* FIXME remove endpoint from descriptor list */ | |
2327 | #endif | |
2328 | } | |
2329 | } | |
2330 | #endif | |
2331 | ||
2332 | /* one config: cdc, else minimal subset */ | |
2333 | if (!cdc) { | |
2334 | eth_config.bNumInterfaces = 1; | |
2335 | eth_config.iConfiguration = STRING_SUBSET; | |
2336 | fs_subset_descriptors(); | |
2337 | hs_subset_descriptors(); | |
2338 | } | |
2339 | ||
e1394b49 DB |
2340 | device_desc.bMaxPacketSize0 = gadget->ep0->maxpacket; |
2341 | usb_gadget_set_selfpowered (gadget); | |
2342 | ||
1da177e4 LT |
2343 | /* For now RNDIS is always a second config */ |
2344 | if (rndis) | |
2345 | device_desc.bNumConfigurations = 2; | |
2346 | ||
2347 | #ifdef CONFIG_USB_GADGET_DUALSPEED | |
2348 | if (rndis) | |
2349 | dev_qualifier.bNumConfigurations = 2; | |
2350 | else if (!cdc) | |
2351 | dev_qualifier.bDeviceClass = USB_CLASS_VENDOR_SPEC; | |
2352 | ||
2353 | /* assumes ep0 uses the same value for both speeds ... */ | |
2354 | dev_qualifier.bMaxPacketSize0 = device_desc.bMaxPacketSize0; | |
2355 | ||
2356 | /* and that all endpoints are dual-speed */ | |
2357 | hs_source_desc.bEndpointAddress = fs_source_desc.bEndpointAddress; | |
2358 | hs_sink_desc.bEndpointAddress = fs_sink_desc.bEndpointAddress; | |
2359 | #if defined(DEV_CONFIG_CDC) || defined(CONFIG_USB_ETH_RNDIS) | |
907cba35 | 2360 | if (status_ep) |
1da177e4 LT |
2361 | hs_status_desc.bEndpointAddress = |
2362 | fs_status_desc.bEndpointAddress; | |
2363 | #endif | |
2364 | #endif /* DUALSPEED */ | |
2365 | ||
1da177e4 LT |
2366 | if (gadget->is_otg) { |
2367 | otg_descriptor.bmAttributes |= USB_OTG_HNP, | |
2368 | eth_config.bmAttributes |= USB_CONFIG_ATT_WAKEUP; | |
2369 | eth_config.bMaxPower = 4; | |
2370 | #ifdef CONFIG_USB_ETH_RNDIS | |
2371 | rndis_config.bmAttributes |= USB_CONFIG_ATT_WAKEUP; | |
2372 | rndis_config.bMaxPower = 4; | |
2373 | #endif | |
2374 | } | |
2375 | ||
7e27f18c DB |
2376 | net = alloc_etherdev (sizeof *dev); |
2377 | if (!net) | |
1da177e4 LT |
2378 | return status; |
2379 | dev = netdev_priv(net); | |
2380 | spin_lock_init (&dev->lock); | |
2381 | INIT_WORK (&dev->work, eth_work, dev); | |
2382 | INIT_LIST_HEAD (&dev->tx_reqs); | |
2383 | INIT_LIST_HEAD (&dev->rx_reqs); | |
2384 | ||
2385 | /* network device setup */ | |
2386 | dev->net = net; | |
2387 | SET_MODULE_OWNER (net); | |
2388 | strcpy (net->name, "usb%d"); | |
2389 | dev->cdc = cdc; | |
2390 | dev->zlp = zlp; | |
2391 | ||
2392 | dev->in_ep = in_ep; | |
2393 | dev->out_ep = out_ep; | |
2394 | dev->status_ep = status_ep; | |
2395 | ||
2396 | /* Module params for these addresses should come from ID proms. | |
2397 | * The host side address is used with CDC and RNDIS, and commonly | |
2398 | * ends up in a persistent config database. | |
2399 | */ | |
1afc64a3 AV |
2400 | if (get_ether_addr(dev_addr, net->dev_addr)) |
2401 | dev_warn(&gadget->dev, | |
2402 | "using random %s ethernet address\n", "self"); | |
1da177e4 | 2403 | if (cdc || rndis) { |
1afc64a3 AV |
2404 | if (get_ether_addr(host_addr, dev->host_mac)) |
2405 | dev_warn(&gadget->dev, | |
2406 | "using random %s ethernet address\n", "host"); | |
1da177e4 LT |
2407 | #ifdef DEV_CONFIG_CDC |
2408 | snprintf (ethaddr, sizeof ethaddr, "%02X%02X%02X%02X%02X%02X", | |
2409 | dev->host_mac [0], dev->host_mac [1], | |
2410 | dev->host_mac [2], dev->host_mac [3], | |
2411 | dev->host_mac [4], dev->host_mac [5]); | |
2412 | #endif | |
2413 | } | |
2414 | ||
2415 | if (rndis) { | |
2416 | status = rndis_init(); | |
2417 | if (status < 0) { | |
2418 | dev_err (&gadget->dev, "can't init RNDIS, %d\n", | |
2419 | status); | |
2420 | goto fail; | |
2421 | } | |
2422 | } | |
2423 | ||
2424 | net->change_mtu = eth_change_mtu; | |
2425 | net->get_stats = eth_get_stats; | |
2426 | net->hard_start_xmit = eth_start_xmit; | |
2427 | net->open = eth_open; | |
2428 | net->stop = eth_stop; | |
2429 | // watchdog_timeo, tx_timeout ... | |
2430 | // set_multicast_list | |
2431 | SET_ETHTOOL_OPS(net, &ops); | |
2432 | ||
2433 | /* preallocate control message data and buffer */ | |
907cba35 | 2434 | dev->req = eth_req_alloc (gadget->ep0, USB_BUFSIZ, GFP_KERNEL); |
1da177e4 LT |
2435 | if (!dev->req) |
2436 | goto fail; | |
2437 | dev->req->complete = eth_setup_complete; | |
2438 | ||
2439 | /* ... and maybe likewise for status transfer */ | |
05f33400 | 2440 | #if defined(DEV_CONFIG_CDC) || defined(CONFIG_USB_ETH_RNDIS) |
1da177e4 LT |
2441 | if (dev->status_ep) { |
2442 | dev->stat_req = eth_req_alloc (dev->status_ep, | |
907cba35 | 2443 | STATUS_BYTECOUNT, GFP_KERNEL); |
1da177e4 LT |
2444 | if (!dev->stat_req) { |
2445 | eth_req_free (gadget->ep0, dev->req); | |
2446 | goto fail; | |
2447 | } | |
907cba35 | 2448 | dev->stat_req->context = NULL; |
1da177e4 | 2449 | } |
822e14ac | 2450 | #endif |
1da177e4 LT |
2451 | |
2452 | /* finish hookup to lower layer ... */ | |
2453 | dev->gadget = gadget; | |
2454 | set_gadget_data (gadget, dev); | |
2455 | gadget->ep0->driver_data = dev; | |
7e27f18c | 2456 | |
1da177e4 LT |
2457 | /* two kinds of host-initiated state changes: |
2458 | * - iff DATA transfer is active, carrier is "on" | |
2459 | * - tx queueing enabled if open *and* carrier is "on" | |
2460 | */ | |
2461 | netif_stop_queue (dev->net); | |
2462 | netif_carrier_off (dev->net); | |
2463 | ||
7e27f18c DB |
2464 | SET_NETDEV_DEV (dev->net, &gadget->dev); |
2465 | status = register_netdev (dev->net); | |
1da177e4 LT |
2466 | if (status < 0) |
2467 | goto fail1; | |
2468 | ||
2469 | INFO (dev, "%s, version: " DRIVER_VERSION "\n", driver_desc); | |
2470 | INFO (dev, "using %s, OUT %s IN %s%s%s\n", gadget->name, | |
907cba35 DB |
2471 | out_ep->name, in_ep->name, |
2472 | status_ep ? " STATUS " : "", | |
2473 | status_ep ? status_ep->name : "" | |
1da177e4 LT |
2474 | ); |
2475 | INFO (dev, "MAC %02x:%02x:%02x:%02x:%02x:%02x\n", | |
2476 | net->dev_addr [0], net->dev_addr [1], | |
2477 | net->dev_addr [2], net->dev_addr [3], | |
2478 | net->dev_addr [4], net->dev_addr [5]); | |
2479 | ||
2480 | if (cdc || rndis) | |
2481 | INFO (dev, "HOST MAC %02x:%02x:%02x:%02x:%02x:%02x\n", | |
2482 | dev->host_mac [0], dev->host_mac [1], | |
2483 | dev->host_mac [2], dev->host_mac [3], | |
2484 | dev->host_mac [4], dev->host_mac [5]); | |
2485 | ||
1da177e4 LT |
2486 | if (rndis) { |
2487 | u32 vendorID = 0; | |
2488 | ||
2489 | /* FIXME RNDIS vendor id == "vendor NIC code" == ? */ | |
7e27f18c | 2490 | |
1da177e4 LT |
2491 | dev->rndis_config = rndis_register (rndis_control_ack); |
2492 | if (dev->rndis_config < 0) { | |
2493 | fail0: | |
2494 | unregister_netdev (dev->net); | |
2495 | status = -ENODEV; | |
2496 | goto fail; | |
2497 | } | |
7e27f18c | 2498 | |
1da177e4 LT |
2499 | /* these set up a lot of the OIDs that RNDIS needs */ |
2500 | rndis_set_host_mac (dev->rndis_config, dev->host_mac); | |
2501 | if (rndis_set_param_dev (dev->rndis_config, dev->net, | |
340600ab | 2502 | &dev->stats, &dev->cdc_filter)) |
1da177e4 LT |
2503 | goto fail0; |
2504 | if (rndis_set_param_vendor (dev->rndis_config, vendorID, | |
2505 | manufacturer)) | |
2506 | goto fail0; | |
2507 | if (rndis_set_param_medium (dev->rndis_config, | |
2508 | NDIS_MEDIUM_802_3, | |
2509 | 0)) | |
2510 | goto fail0; | |
2511 | INFO (dev, "RNDIS ready\n"); | |
2512 | } | |
1da177e4 LT |
2513 | |
2514 | return status; | |
2515 | ||
2516 | fail1: | |
2517 | dev_dbg(&gadget->dev, "register_netdev failed, %d\n", status); | |
2518 | fail: | |
2519 | eth_unbind (gadget); | |
2520 | return status; | |
2521 | } | |
2522 | ||
2523 | /*-------------------------------------------------------------------------*/ | |
2524 | ||
2525 | static void | |
2526 | eth_suspend (struct usb_gadget *gadget) | |
2527 | { | |
2528 | struct eth_dev *dev = get_gadget_data (gadget); | |
2529 | ||
2530 | DEBUG (dev, "suspend\n"); | |
2531 | dev->suspended = 1; | |
2532 | } | |
2533 | ||
2534 | static void | |
2535 | eth_resume (struct usb_gadget *gadget) | |
2536 | { | |
2537 | struct eth_dev *dev = get_gadget_data (gadget); | |
2538 | ||
2539 | DEBUG (dev, "resume\n"); | |
2540 | dev->suspended = 0; | |
2541 | } | |
2542 | ||
2543 | /*-------------------------------------------------------------------------*/ | |
2544 | ||
2545 | static struct usb_gadget_driver eth_driver = { | |
907cba35 DB |
2546 | .speed = DEVSPEED, |
2547 | ||
1da177e4 LT |
2548 | .function = (char *) driver_desc, |
2549 | .bind = eth_bind, | |
329af28b | 2550 | .unbind = __exit_p(eth_unbind), |
1da177e4 LT |
2551 | |
2552 | .setup = eth_setup, | |
2553 | .disconnect = eth_disconnect, | |
2554 | ||
2555 | .suspend = eth_suspend, | |
2556 | .resume = eth_resume, | |
2557 | ||
7e27f18c | 2558 | .driver = { |
1da177e4 | 2559 | .name = (char *) shortname, |
d0d5049f | 2560 | .owner = THIS_MODULE, |
1da177e4 LT |
2561 | }, |
2562 | }; | |
2563 | ||
2564 | MODULE_DESCRIPTION (DRIVER_DESC); | |
2565 | MODULE_AUTHOR ("David Brownell, Benedikt Spanger"); | |
2566 | MODULE_LICENSE ("GPL"); | |
2567 | ||
2568 | ||
2569 | static int __init init (void) | |
2570 | { | |
2571 | return usb_gadget_register_driver (ð_driver); | |
2572 | } | |
2573 | module_init (init); | |
2574 | ||
2575 | static void __exit cleanup (void) | |
2576 | { | |
2577 | usb_gadget_unregister_driver (ð_driver); | |
2578 | } | |
2579 | module_exit (cleanup); | |
2580 |