]>
Commit | Line | Data |
---|---|---|
83d290c5 | 1 | // SPDX-License-Identifier: GPL-2.0+ |
23cd1385 RB |
2 | /* |
3 | * ether.c -- Ethernet gadget driver, with CDC and non-CDC options | |
4 | * | |
5 | * Copyright (C) 2003-2005,2008 David Brownell | |
6 | * Copyright (C) 2003-2004 Robert Schwebel, Benedikt Spranger | |
7 | * Copyright (C) 2008 Nokia Corporation | |
23cd1385 RB |
8 | */ |
9 | ||
d678a59d | 10 | #include <common.h> |
24b852a7 | 11 | #include <console.h> |
9fb625ce | 12 | #include <env.h> |
f7ae49fc | 13 | #include <log.h> |
e6f6f9e6 | 14 | #include <part.h> |
1221ce45 | 15 | #include <linux/errno.h> |
c85d70ef | 16 | #include <linux/netdevice.h> |
1e94b46f | 17 | #include <linux/printk.h> |
23cd1385 RB |
18 | #include <linux/usb/ch9.h> |
19 | #include <linux/usb/cdc.h> | |
20 | #include <linux/usb/gadget.h> | |
21 | #include <net.h> | |
8bfc288c | 22 | #include <usb.h> |
7612a43d | 23 | #include <malloc.h> |
cf92e05c | 24 | #include <memalign.h> |
23cd1385 RB |
25 | #include <linux/ctype.h> |
26 | ||
27 | #include "gadget_chips.h" | |
7612a43d | 28 | #include "rndis.h" |
23cd1385 | 29 | |
d4345aee | 30 | #include <dm.h> |
d4a37553 | 31 | #include <dm/lists.h> |
d4345aee M |
32 | #include <dm/uclass-internal.h> |
33 | #include <dm/device-internal.h> | |
34 | ||
8f7aa831 | 35 | #define USB_NET_NAME "usb_ether" |
7de73185 | 36 | |
23cd1385 | 37 | extern struct platform_data brd; |
23cd1385 RB |
38 | |
39 | ||
40 | unsigned packet_received, packet_sent; | |
41 | ||
23cd1385 RB |
42 | /* |
43 | * Ethernet gadget driver -- with CDC and non-CDC options | |
44 | * Builds on hardware support for a full duplex link. | |
45 | * | |
46 | * CDC Ethernet is the standard USB solution for sending Ethernet frames | |
47 | * using USB. Real hardware tends to use the same framing protocol but look | |
48 | * different for control features. This driver strongly prefers to use | |
49 | * this USB-IF standard as its open-systems interoperability solution; | |
50 | * most host side USB stacks (except from Microsoft) support it. | |
51 | * | |
52 | * This is sometimes called "CDC ECM" (Ethernet Control Model) to support | |
53 | * TLA-soup. "CDC ACM" (Abstract Control Model) is for modems, and a new | |
54 | * "CDC EEM" (Ethernet Emulation Model) is starting to spread. | |
55 | * | |
56 | * There's some hardware that can't talk CDC ECM. We make that hardware | |
57 | * implement a "minimalist" vendor-agnostic CDC core: same framing, but | |
58 | * link-level setup only requires activating the configuration. Only the | |
59 | * endpoint descriptors, and product/vendor IDs, are relevant; no control | |
60 | * operations are available. Linux supports it, but other host operating | |
61 | * systems may not. (This is a subset of CDC Ethernet.) | |
62 | * | |
63 | * It turns out that if you add a few descriptors to that "CDC Subset", | |
64 | * (Windows) host side drivers from MCCI can treat it as one submode of | |
65 | * a proprietary scheme called "SAFE" ... without needing to know about | |
66 | * specific product/vendor IDs. So we do that, making it easier to use | |
67 | * those MS-Windows drivers. Those added descriptors make it resemble a | |
68 | * CDC MDLM device, but they don't change device behavior at all. (See | |
69 | * MCCI Engineering report 950198 "SAFE Networking Functions".) | |
70 | * | |
71 | * A third option is also in use. Rather than CDC Ethernet, or something | |
72 | * simpler, Microsoft pushes their own approach: RNDIS. The published | |
73 | * RNDIS specs are ambiguous and appear to be incomplete, and are also | |
74 | * needlessly complex. They borrow more from CDC ACM than CDC ECM. | |
75 | */ | |
23cd1385 RB |
76 | |
77 | #define DRIVER_DESC "Ethernet Gadget" | |
78 | /* Based on linux 2.6.27 version */ | |
79 | #define DRIVER_VERSION "May Day 2005" | |
80 | ||
6142e0ae | 81 | static const char driver_desc[] = DRIVER_DESC; |
23cd1385 RB |
82 | |
83 | #define RX_EXTRA 20 /* guard against rx overflows */ | |
84 | ||
7612a43d VK |
85 | #ifndef CONFIG_USB_ETH_RNDIS |
86 | #define rndis_uninit(x) do {} while (0) | |
87 | #define rndis_deregister(c) do {} while (0) | |
88 | #define rndis_exit() do {} while (0) | |
89 | #endif | |
90 | ||
91 | /* CDC and RNDIS support the same host-chosen outgoing packet filters. */ | |
23cd1385 RB |
92 | #define DEFAULT_FILTER (USB_CDC_PACKET_TYPE_BROADCAST \ |
93 | |USB_CDC_PACKET_TYPE_ALL_MULTICAST \ | |
94 | |USB_CDC_PACKET_TYPE_PROMISCUOUS \ | |
95 | |USB_CDC_PACKET_TYPE_DIRECTED) | |
96 | ||
97 | #define USB_CONNECT_TIMEOUT (3 * CONFIG_SYS_HZ) | |
98 | ||
8b6b66b4 VK |
99 | /*-------------------------------------------------------------------------*/ |
100 | ||
101 | struct eth_dev { | |
102 | struct usb_gadget *gadget; | |
103 | struct usb_request *req; /* for control responses */ | |
7612a43d | 104 | struct usb_request *stat_req; /* for cdc & rndis status */ |
8b6b66b4 VK |
105 | |
106 | u8 config; | |
107 | struct usb_ep *in_ep, *out_ep, *status_ep; | |
108 | const struct usb_endpoint_descriptor | |
109 | *in, *out, *status; | |
110 | ||
111 | struct usb_request *tx_req, *rx_req; | |
112 | ||
d4a37553 | 113 | struct udevice *net; |
8b6b66b4 VK |
114 | struct net_device_stats stats; |
115 | unsigned int tx_qlen; | |
116 | ||
117 | unsigned zlp:1; | |
118 | unsigned cdc:1; | |
7612a43d | 119 | unsigned rndis:1; |
8b6b66b4 VK |
120 | unsigned suspended:1; |
121 | unsigned network_started:1; | |
122 | u16 cdc_filter; | |
123 | unsigned long todo; | |
124 | int mtu; | |
125 | #define WORK_RX_MEMORY 0 | |
7612a43d | 126 | int rndis_config; |
8b6b66b4 VK |
127 | u8 host_mac[ETH_ALEN]; |
128 | }; | |
129 | ||
130 | /* | |
131 | * This version autoconfigures as much as possible at run-time. | |
132 | * | |
133 | * It also ASSUMES a self-powered device, without remote wakeup, | |
134 | * although remote wakeup support would make sense. | |
135 | */ | |
136 | ||
23cd1385 | 137 | /*-------------------------------------------------------------------------*/ |
5cb3b9d7 M |
138 | struct ether_priv { |
139 | struct eth_dev ethdev; | |
d4a37553 | 140 | struct udevice *netdev; |
5cb3b9d7 M |
141 | struct usb_gadget_driver eth_driver; |
142 | }; | |
143 | ||
144 | struct ether_priv eth_priv; | |
145 | struct ether_priv *l_priv = ð_priv; | |
23cd1385 RB |
146 | |
147 | /*-------------------------------------------------------------------------*/ | |
148 | ||
149 | /* "main" config is either CDC, or its simple subset */ | |
150 | static inline int is_cdc(struct eth_dev *dev) | |
151 | { | |
2bb37884 | 152 | #if !defined(CONFIG_USB_ETH_SUBSET) |
23cd1385 | 153 | return 1; /* only cdc possible */ |
2bb37884 | 154 | #elif !defined(CONFIG_USB_ETH_CDC) |
23cd1385 RB |
155 | return 0; /* only subset possible */ |
156 | #else | |
157 | return dev->cdc; /* depends on what hardware we found */ | |
158 | #endif | |
159 | } | |
160 | ||
7612a43d VK |
161 | /* "secondary" RNDIS config may sometimes be activated */ |
162 | static inline int rndis_active(struct eth_dev *dev) | |
163 | { | |
164 | #ifdef CONFIG_USB_ETH_RNDIS | |
165 | return dev->rndis; | |
166 | #else | |
167 | return 0; | |
168 | #endif | |
169 | } | |
170 | ||
171 | #define subset_active(dev) (!is_cdc(dev) && !rndis_active(dev)) | |
172 | #define cdc_active(dev) (is_cdc(dev) && !rndis_active(dev)) | |
23cd1385 RB |
173 | |
174 | #define DEFAULT_QLEN 2 /* double buffering by default */ | |
175 | ||
176 | /* peak bulk transfer bits-per-second */ | |
177 | #define HS_BPS (13 * 512 * 8 * 1000 * 8) | |
178 | #define FS_BPS (19 * 64 * 1 * 1000 * 8) | |
179 | ||
180 | #ifdef CONFIG_USB_GADGET_DUALSPEED | |
181 | #define DEVSPEED USB_SPEED_HIGH | |
182 | ||
2721dbf1 VK |
183 | #ifdef CONFIG_USB_ETH_QMULT |
184 | #define qmult CONFIG_USB_ETH_QMULT | |
185 | #else | |
186 | #define qmult 5 | |
187 | #endif | |
188 | ||
23cd1385 RB |
189 | /* for dual-speed hardware, use deeper queues at highspeed */ |
190 | #define qlen(gadget) \ | |
191 | (DEFAULT_QLEN*((gadget->speed == USB_SPEED_HIGH) ? qmult : 1)) | |
192 | ||
193 | static inline int BITRATE(struct usb_gadget *g) | |
194 | { | |
195 | return (g->speed == USB_SPEED_HIGH) ? HS_BPS : FS_BPS; | |
196 | } | |
197 | ||
198 | #else /* full speed (low speed doesn't do bulk) */ | |
199 | ||
200 | #define qmult 1 | |
201 | ||
202 | #define DEVSPEED USB_SPEED_FULL | |
203 | ||
204 | #define qlen(gadget) DEFAULT_QLEN | |
205 | ||
206 | static inline int BITRATE(struct usb_gadget *g) | |
207 | { | |
208 | return FS_BPS; | |
209 | } | |
210 | #endif | |
211 | ||
23cd1385 RB |
212 | /*-------------------------------------------------------------------------*/ |
213 | ||
6142e0ae VK |
214 | /* |
215 | * DO NOT REUSE THESE IDs with a protocol-incompatible driver!! Ever!! | |
23cd1385 RB |
216 | * Instead: allocate your own, using normal USB-IF procedures. |
217 | */ | |
218 | ||
6142e0ae VK |
219 | /* |
220 | * Thanks to NetChip Technologies for donating this product ID. | |
23cd1385 RB |
221 | * It's for devices with only CDC Ethernet configurations. |
222 | */ | |
223 | #define CDC_VENDOR_NUM 0x0525 /* NetChip */ | |
224 | #define CDC_PRODUCT_NUM 0xa4a1 /* Linux-USB Ethernet Gadget */ | |
225 | ||
6142e0ae VK |
226 | /* |
227 | * For hardware that can't talk CDC, we use the same vendor ID that | |
23cd1385 RB |
228 | * ARM Linux has used for ethernet-over-usb, both with sa1100 and |
229 | * with pxa250. We're protocol-compatible, if the host-side drivers | |
230 | * use the endpoint descriptors. bcdDevice (version) is nonzero, so | |
231 | * drivers that need to hard-wire endpoint numbers have a hook. | |
232 | * | |
233 | * The protocol is a minimal subset of CDC Ether, which works on any bulk | |
234 | * hardware that's not deeply broken ... even on hardware that can't talk | |
235 | * RNDIS (like SA-1100, with no interrupt endpoint, or anything that | |
236 | * doesn't handle control-OUT). | |
237 | */ | |
7612a43d VK |
238 | #define SIMPLE_VENDOR_NUM 0x049f /* Compaq Computer Corp. */ |
239 | #define SIMPLE_PRODUCT_NUM 0x505a /* Linux-USB "CDC Subset" Device */ | |
240 | ||
241 | /* | |
242 | * For hardware that can talk RNDIS and either of the above protocols, | |
243 | * use this ID ... the windows INF files will know it. Unless it's | |
244 | * used with CDC Ethernet, Linux 2.4 hosts will need updates to choose | |
245 | * the non-RNDIS configuration. | |
246 | */ | |
247 | #define RNDIS_VENDOR_NUM 0x0525 /* NetChip */ | |
248 | #define RNDIS_PRODUCT_NUM 0xa4a2 /* Ethernet/RNDIS Gadget */ | |
23cd1385 | 249 | |
6142e0ae VK |
250 | /* |
251 | * Some systems will want different product identifers published in the | |
23cd1385 RB |
252 | * device descriptor, either numbers or strings or both. These string |
253 | * parameters are in UTF-8 (superset of ASCII's 7 bit characters). | |
254 | */ | |
255 | ||
7612a43d VK |
256 | /* |
257 | * Emulating them in eth_bind: | |
258 | * static ushort idVendor; | |
259 | * static ushort idProduct; | |
260 | */ | |
261 | ||
10ac57fd MR |
262 | #if defined(CONFIG_USB_GADGET_MANUFACTURER) |
263 | static char *iManufacturer = CONFIG_USB_GADGET_MANUFACTURER; | |
23cd1385 | 264 | #else |
a187559e | 265 | static char *iManufacturer = "U-Boot"; |
23cd1385 | 266 | #endif |
7612a43d VK |
267 | |
268 | /* These probably need to be configurable. */ | |
269 | static ushort bcdDevice; | |
23cd1385 RB |
270 | static char *iProduct; |
271 | static char *iSerialNumber; | |
7612a43d | 272 | |
23cd1385 | 273 | static char dev_addr[18]; |
7612a43d | 274 | |
23cd1385 RB |
275 | static char host_addr[18]; |
276 | ||
7612a43d | 277 | |
23cd1385 RB |
278 | /*-------------------------------------------------------------------------*/ |
279 | ||
6142e0ae VK |
280 | /* |
281 | * USB DRIVER HOOKUP (to the hardware driver, below us), mostly | |
23cd1385 RB |
282 | * ep0 implementation: descriptors, config management, setup(). |
283 | * also optional class-specific notification interrupt transfer. | |
284 | */ | |
285 | ||
286 | /* | |
287 | * DESCRIPTORS ... most are static, but strings and (full) configuration | |
288 | * descriptors are built on demand. For now we do either full CDC, or | |
7612a43d VK |
289 | * our simple subset, with RNDIS as an optional second configuration. |
290 | * | |
291 | * RNDIS includes some CDC ACM descriptors ... like CDC Ethernet. But | |
292 | * the class descriptors match a modem (they're ignored; it's really just | |
293 | * Ethernet functionality), they don't need the NOP altsetting, and the | |
294 | * status transfer endpoint isn't optional. | |
23cd1385 RB |
295 | */ |
296 | ||
297 | #define STRING_MANUFACTURER 1 | |
298 | #define STRING_PRODUCT 2 | |
299 | #define STRING_ETHADDR 3 | |
300 | #define STRING_DATA 4 | |
301 | #define STRING_CONTROL 5 | |
7612a43d | 302 | #define STRING_RNDIS_CONTROL 6 |
23cd1385 RB |
303 | #define STRING_CDC 7 |
304 | #define STRING_SUBSET 8 | |
7612a43d | 305 | #define STRING_RNDIS 9 |
23cd1385 RB |
306 | #define STRING_SERIALNUMBER 10 |
307 | ||
7612a43d | 308 | /* holds our biggest descriptor (or RNDIS response) */ |
23cd1385 RB |
309 | #define USB_BUFSIZ 256 |
310 | ||
311 | /* | |
7612a43d VK |
312 | * This device advertises one configuration, eth_config, unless RNDIS |
313 | * is enabled (rndis_config) on hardware supporting at least two configs. | |
314 | * | |
315 | * NOTE: Controllers like superh_udc should probably be able to use | |
316 | * an RNDIS-only configuration. | |
23cd1385 RB |
317 | * |
318 | * FIXME define some higher-powered configurations to make it easier | |
319 | * to recharge batteries ... | |
320 | */ | |
321 | ||
322 | #define DEV_CONFIG_VALUE 1 /* cdc or subset */ | |
7612a43d | 323 | #define DEV_RNDIS_CONFIG_VALUE 2 /* rndis; optional */ |
23cd1385 RB |
324 | |
325 | static struct usb_device_descriptor | |
326 | device_desc = { | |
327 | .bLength = sizeof device_desc, | |
328 | .bDescriptorType = USB_DT_DEVICE, | |
329 | ||
6142e0ae | 330 | .bcdUSB = __constant_cpu_to_le16(0x0200), |
23cd1385 RB |
331 | |
332 | .bDeviceClass = USB_CLASS_COMM, | |
333 | .bDeviceSubClass = 0, | |
334 | .bDeviceProtocol = 0, | |
335 | ||
6142e0ae VK |
336 | .idVendor = __constant_cpu_to_le16(CDC_VENDOR_NUM), |
337 | .idProduct = __constant_cpu_to_le16(CDC_PRODUCT_NUM), | |
23cd1385 RB |
338 | .iManufacturer = STRING_MANUFACTURER, |
339 | .iProduct = STRING_PRODUCT, | |
340 | .bNumConfigurations = 1, | |
341 | }; | |
342 | ||
343 | static struct usb_otg_descriptor | |
344 | otg_descriptor = { | |
345 | .bLength = sizeof otg_descriptor, | |
346 | .bDescriptorType = USB_DT_OTG, | |
347 | ||
348 | .bmAttributes = USB_OTG_SRP, | |
349 | }; | |
350 | ||
351 | static struct usb_config_descriptor | |
352 | eth_config = { | |
353 | .bLength = sizeof eth_config, | |
354 | .bDescriptorType = USB_DT_CONFIG, | |
355 | ||
356 | /* compute wTotalLength on the fly */ | |
357 | .bNumInterfaces = 2, | |
358 | .bConfigurationValue = DEV_CONFIG_VALUE, | |
359 | .iConfiguration = STRING_CDC, | |
360 | .bmAttributes = USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER, | |
361 | .bMaxPower = 1, | |
362 | }; | |
363 | ||
7612a43d VK |
364 | #ifdef CONFIG_USB_ETH_RNDIS |
365 | static struct usb_config_descriptor | |
366 | rndis_config = { | |
367 | .bLength = sizeof rndis_config, | |
368 | .bDescriptorType = USB_DT_CONFIG, | |
369 | ||
370 | /* compute wTotalLength on the fly */ | |
371 | .bNumInterfaces = 2, | |
372 | .bConfigurationValue = DEV_RNDIS_CONFIG_VALUE, | |
373 | .iConfiguration = STRING_RNDIS, | |
374 | .bmAttributes = USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER, | |
375 | .bMaxPower = 1, | |
376 | }; | |
377 | #endif | |
378 | ||
23cd1385 RB |
379 | /* |
380 | * Compared to the simple CDC subset, the full CDC Ethernet model adds | |
381 | * three class descriptors, two interface descriptors, optional status | |
382 | * endpoint. Both have a "data" interface and two bulk endpoints. | |
383 | * There are also differences in how control requests are handled. | |
7612a43d VK |
384 | * |
385 | * RNDIS shares a lot with CDC-Ethernet, since it's a variant of the | |
386 | * CDC-ACM (modem) spec. Unfortunately MSFT's RNDIS driver is buggy; it | |
387 | * may hang or oops. Since bugfixes (or accurate specs, letting Linux | |
388 | * work around those bugs) are unlikely to ever come from MSFT, you may | |
389 | * wish to avoid using RNDIS. | |
390 | * | |
391 | * MCCI offers an alternative to RNDIS if you need to connect to Windows | |
392 | * but have hardware that can't support CDC Ethernet. We add descriptors | |
393 | * to present the CDC Subset as a (nonconformant) CDC MDLM variant called | |
394 | * "SAFE". That borrows from both CDC Ethernet and CDC MDLM. You can | |
395 | * get those drivers from MCCI, or bundled with various products. | |
23cd1385 RB |
396 | */ |
397 | ||
2bb37884 | 398 | #ifdef CONFIG_USB_ETH_CDC |
23cd1385 RB |
399 | static struct usb_interface_descriptor |
400 | control_intf = { | |
401 | .bLength = sizeof control_intf, | |
402 | .bDescriptorType = USB_DT_INTERFACE, | |
403 | ||
404 | .bInterfaceNumber = 0, | |
405 | /* status endpoint is optional; this may be patched later */ | |
406 | .bNumEndpoints = 1, | |
407 | .bInterfaceClass = USB_CLASS_COMM, | |
408 | .bInterfaceSubClass = USB_CDC_SUBCLASS_ETHERNET, | |
409 | .bInterfaceProtocol = USB_CDC_PROTO_NONE, | |
410 | .iInterface = STRING_CONTROL, | |
411 | }; | |
412 | #endif | |
413 | ||
7612a43d VK |
414 | #ifdef CONFIG_USB_ETH_RNDIS |
415 | static const struct usb_interface_descriptor | |
416 | rndis_control_intf = { | |
417 | .bLength = sizeof rndis_control_intf, | |
418 | .bDescriptorType = USB_DT_INTERFACE, | |
419 | ||
420 | .bInterfaceNumber = 0, | |
421 | .bNumEndpoints = 1, | |
422 | .bInterfaceClass = USB_CLASS_COMM, | |
423 | .bInterfaceSubClass = USB_CDC_SUBCLASS_ACM, | |
424 | .bInterfaceProtocol = USB_CDC_ACM_PROTO_VENDOR, | |
425 | .iInterface = STRING_RNDIS_CONTROL, | |
426 | }; | |
427 | #endif | |
428 | ||
23cd1385 RB |
429 | static const struct usb_cdc_header_desc header_desc = { |
430 | .bLength = sizeof header_desc, | |
431 | .bDescriptorType = USB_DT_CS_INTERFACE, | |
432 | .bDescriptorSubType = USB_CDC_HEADER_TYPE, | |
433 | ||
6142e0ae | 434 | .bcdCDC = __constant_cpu_to_le16(0x0110), |
23cd1385 RB |
435 | }; |
436 | ||
2bb37884 | 437 | #if defined(CONFIG_USB_ETH_CDC) || defined(CONFIG_USB_ETH_RNDIS) |
23cd1385 RB |
438 | |
439 | static const struct usb_cdc_union_desc union_desc = { | |
440 | .bLength = sizeof union_desc, | |
441 | .bDescriptorType = USB_DT_CS_INTERFACE, | |
442 | .bDescriptorSubType = USB_CDC_UNION_TYPE, | |
443 | ||
444 | .bMasterInterface0 = 0, /* index of control interface */ | |
445 | .bSlaveInterface0 = 1, /* index of DATA interface */ | |
446 | }; | |
447 | ||
7612a43d VK |
448 | #endif /* CDC || RNDIS */ |
449 | ||
450 | #ifdef CONFIG_USB_ETH_RNDIS | |
451 | ||
452 | static const struct usb_cdc_call_mgmt_descriptor call_mgmt_descriptor = { | |
453 | .bLength = sizeof call_mgmt_descriptor, | |
454 | .bDescriptorType = USB_DT_CS_INTERFACE, | |
455 | .bDescriptorSubType = USB_CDC_CALL_MANAGEMENT_TYPE, | |
456 | ||
457 | .bmCapabilities = 0x00, | |
458 | .bDataInterface = 0x01, | |
459 | }; | |
460 | ||
461 | static const struct usb_cdc_acm_descriptor acm_descriptor = { | |
462 | .bLength = sizeof acm_descriptor, | |
463 | .bDescriptorType = USB_DT_CS_INTERFACE, | |
464 | .bDescriptorSubType = USB_CDC_ACM_TYPE, | |
465 | ||
466 | .bmCapabilities = 0x00, | |
467 | }; | |
468 | ||
469 | #endif | |
23cd1385 | 470 | |
2bb37884 | 471 | #ifndef CONFIG_USB_ETH_CDC |
23cd1385 | 472 | |
6142e0ae VK |
473 | /* |
474 | * "SAFE" loosely follows CDC WMC MDLM, violating the spec in various | |
23cd1385 RB |
475 | * ways: data endpoints live in the control interface, there's no data |
476 | * interface, and it's not used to talk to a cell phone radio. | |
477 | */ | |
478 | ||
479 | static const struct usb_cdc_mdlm_desc mdlm_desc = { | |
480 | .bLength = sizeof mdlm_desc, | |
481 | .bDescriptorType = USB_DT_CS_INTERFACE, | |
482 | .bDescriptorSubType = USB_CDC_MDLM_TYPE, | |
483 | ||
484 | .bcdVersion = __constant_cpu_to_le16(0x0100), | |
485 | .bGUID = { | |
486 | 0x5d, 0x34, 0xcf, 0x66, 0x11, 0x18, 0x11, 0xd6, | |
487 | 0xa2, 0x1a, 0x00, 0x01, 0x02, 0xca, 0x9a, 0x7f, | |
488 | }, | |
489 | }; | |
490 | ||
6142e0ae VK |
491 | /* |
492 | * since "usb_cdc_mdlm_detail_desc" is a variable length structure, we | |
23cd1385 RB |
493 | * can't really use its struct. All we do here is say that we're using |
494 | * the submode of "SAFE" which directly matches the CDC Subset. | |
495 | */ | |
65c389d2 | 496 | #ifdef CONFIG_USB_ETH_SUBSET |
23cd1385 RB |
497 | static const u8 mdlm_detail_desc[] = { |
498 | 6, | |
499 | USB_DT_CS_INTERFACE, | |
500 | USB_CDC_MDLM_DETAIL_TYPE, | |
501 | ||
502 | 0, /* "SAFE" */ | |
503 | 0, /* network control capabilities (none) */ | |
504 | 0, /* network data capabilities ("raw" encapsulation) */ | |
505 | }; | |
65c389d2 | 506 | #endif |
23cd1385 RB |
507 | |
508 | #endif | |
509 | ||
23cd1385 | 510 | static const struct usb_cdc_ether_desc ether_desc = { |
6142e0ae | 511 | .bLength = sizeof(ether_desc), |
23cd1385 RB |
512 | .bDescriptorType = USB_DT_CS_INTERFACE, |
513 | .bDescriptorSubType = USB_CDC_ETHERNET_TYPE, | |
514 | ||
515 | /* this descriptor actually adds value, surprise! */ | |
516 | .iMACAddress = STRING_ETHADDR, | |
6142e0ae | 517 | .bmEthernetStatistics = __constant_cpu_to_le32(0), /* no statistics */ |
dda52510 | 518 | .wMaxSegmentSize = __constant_cpu_to_le16(PKTSIZE_ALIGN), |
6142e0ae | 519 | .wNumberMCFilters = __constant_cpu_to_le16(0), |
23cd1385 RB |
520 | .bNumberPowerFilters = 0, |
521 | }; | |
522 | ||
2bb37884 | 523 | #if defined(CONFIG_USB_ETH_CDC) || defined(CONFIG_USB_ETH_RNDIS) |
23cd1385 | 524 | |
6142e0ae VK |
525 | /* |
526 | * include the status endpoint if we can, even where it's optional. | |
23cd1385 RB |
527 | * use wMaxPacketSize big enough to fit CDC_NOTIFY_SPEED_CHANGE in one |
528 | * packet, to simplify cancellation; and a big transfer interval, to | |
529 | * waste less bandwidth. | |
530 | * | |
531 | * some drivers (like Linux 2.4 cdc-ether!) "need" it to exist even | |
532 | * if they ignore the connect/disconnect notifications that real aether | |
533 | * can provide. more advanced cdc configurations might want to support | |
534 | * encapsulated commands (vendor-specific, using control-OUT). | |
7612a43d VK |
535 | * |
536 | * RNDIS requires the status endpoint, since it uses that encapsulation | |
537 | * mechanism for its funky RPC scheme. | |
23cd1385 RB |
538 | */ |
539 | ||
540 | #define LOG2_STATUS_INTERVAL_MSEC 5 /* 1 << 5 == 32 msec */ | |
541 | #define STATUS_BYTECOUNT 16 /* 8 byte header + data */ | |
542 | ||
543 | static struct usb_endpoint_descriptor | |
544 | fs_status_desc = { | |
545 | .bLength = USB_DT_ENDPOINT_SIZE, | |
546 | .bDescriptorType = USB_DT_ENDPOINT, | |
547 | ||
548 | .bEndpointAddress = USB_DIR_IN, | |
549 | .bmAttributes = USB_ENDPOINT_XFER_INT, | |
6142e0ae | 550 | .wMaxPacketSize = __constant_cpu_to_le16(STATUS_BYTECOUNT), |
23cd1385 RB |
551 | .bInterval = 1 << LOG2_STATUS_INTERVAL_MSEC, |
552 | }; | |
553 | #endif | |
554 | ||
2bb37884 | 555 | #ifdef CONFIG_USB_ETH_CDC |
23cd1385 RB |
556 | |
557 | /* the default data interface has no endpoints ... */ | |
558 | ||
559 | static const struct usb_interface_descriptor | |
560 | data_nop_intf = { | |
561 | .bLength = sizeof data_nop_intf, | |
562 | .bDescriptorType = USB_DT_INTERFACE, | |
563 | ||
564 | .bInterfaceNumber = 1, | |
565 | .bAlternateSetting = 0, | |
566 | .bNumEndpoints = 0, | |
567 | .bInterfaceClass = USB_CLASS_CDC_DATA, | |
568 | .bInterfaceSubClass = 0, | |
569 | .bInterfaceProtocol = 0, | |
570 | }; | |
571 | ||
572 | /* ... but the "real" data interface has two bulk endpoints */ | |
573 | ||
574 | static const struct usb_interface_descriptor | |
575 | data_intf = { | |
576 | .bLength = sizeof data_intf, | |
577 | .bDescriptorType = USB_DT_INTERFACE, | |
578 | ||
579 | .bInterfaceNumber = 1, | |
580 | .bAlternateSetting = 1, | |
581 | .bNumEndpoints = 2, | |
582 | .bInterfaceClass = USB_CLASS_CDC_DATA, | |
583 | .bInterfaceSubClass = 0, | |
584 | .bInterfaceProtocol = 0, | |
585 | .iInterface = STRING_DATA, | |
586 | }; | |
587 | ||
588 | #endif | |
589 | ||
7612a43d VK |
590 | #ifdef CONFIG_USB_ETH_RNDIS |
591 | ||
592 | /* RNDIS doesn't activate by changing to the "real" altsetting */ | |
593 | ||
594 | static const struct usb_interface_descriptor | |
595 | rndis_data_intf = { | |
596 | .bLength = sizeof rndis_data_intf, | |
597 | .bDescriptorType = USB_DT_INTERFACE, | |
598 | ||
599 | .bInterfaceNumber = 1, | |
600 | .bAlternateSetting = 0, | |
601 | .bNumEndpoints = 2, | |
602 | .bInterfaceClass = USB_CLASS_CDC_DATA, | |
603 | .bInterfaceSubClass = 0, | |
604 | .bInterfaceProtocol = 0, | |
605 | .iInterface = STRING_DATA, | |
606 | }; | |
607 | ||
608 | #endif | |
609 | ||
2bb37884 | 610 | #ifdef CONFIG_USB_ETH_SUBSET |
23cd1385 RB |
611 | |
612 | /* | |
613 | * "Simple" CDC-subset option is a simple vendor-neutral model that most | |
614 | * full speed controllers can handle: one interface, two bulk endpoints. | |
615 | * | |
616 | * To assist host side drivers, we fancy it up a bit, and add descriptors | |
617 | * so some host side drivers will understand it as a "SAFE" variant. | |
618 | */ | |
619 | ||
620 | static const struct usb_interface_descriptor | |
621 | subset_data_intf = { | |
622 | .bLength = sizeof subset_data_intf, | |
623 | .bDescriptorType = USB_DT_INTERFACE, | |
624 | ||
625 | .bInterfaceNumber = 0, | |
626 | .bAlternateSetting = 0, | |
627 | .bNumEndpoints = 2, | |
628 | .bInterfaceClass = USB_CLASS_COMM, | |
629 | .bInterfaceSubClass = USB_CDC_SUBCLASS_MDLM, | |
630 | .bInterfaceProtocol = 0, | |
631 | .iInterface = STRING_DATA, | |
632 | }; | |
633 | ||
634 | #endif /* SUBSET */ | |
635 | ||
23cd1385 RB |
636 | static struct usb_endpoint_descriptor |
637 | fs_source_desc = { | |
638 | .bLength = USB_DT_ENDPOINT_SIZE, | |
639 | .bDescriptorType = USB_DT_ENDPOINT, | |
640 | ||
641 | .bEndpointAddress = USB_DIR_IN, | |
642 | .bmAttributes = USB_ENDPOINT_XFER_BULK, | |
43880ce5 | 643 | .wMaxPacketSize = __constant_cpu_to_le16(64), |
23cd1385 RB |
644 | }; |
645 | ||
646 | static struct usb_endpoint_descriptor | |
647 | fs_sink_desc = { | |
648 | .bLength = USB_DT_ENDPOINT_SIZE, | |
649 | .bDescriptorType = USB_DT_ENDPOINT, | |
650 | ||
651 | .bEndpointAddress = USB_DIR_OUT, | |
652 | .bmAttributes = USB_ENDPOINT_XFER_BULK, | |
43880ce5 | 653 | .wMaxPacketSize = __constant_cpu_to_le16(64), |
23cd1385 RB |
654 | }; |
655 | ||
6142e0ae | 656 | static const struct usb_descriptor_header *fs_eth_function[11] = { |
23cd1385 | 657 | (struct usb_descriptor_header *) &otg_descriptor, |
2bb37884 | 658 | #ifdef CONFIG_USB_ETH_CDC |
23cd1385 RB |
659 | /* "cdc" mode descriptors */ |
660 | (struct usb_descriptor_header *) &control_intf, | |
661 | (struct usb_descriptor_header *) &header_desc, | |
662 | (struct usb_descriptor_header *) &union_desc, | |
663 | (struct usb_descriptor_header *) ðer_desc, | |
664 | /* NOTE: status endpoint may need to be removed */ | |
665 | (struct usb_descriptor_header *) &fs_status_desc, | |
666 | /* data interface, with altsetting */ | |
667 | (struct usb_descriptor_header *) &data_nop_intf, | |
668 | (struct usb_descriptor_header *) &data_intf, | |
669 | (struct usb_descriptor_header *) &fs_source_desc, | |
670 | (struct usb_descriptor_header *) &fs_sink_desc, | |
671 | NULL, | |
2bb37884 | 672 | #endif /* CONFIG_USB_ETH_CDC */ |
23cd1385 RB |
673 | }; |
674 | ||
675 | static inline void fs_subset_descriptors(void) | |
676 | { | |
2bb37884 | 677 | #ifdef CONFIG_USB_ETH_SUBSET |
23cd1385 RB |
678 | /* behavior is "CDC Subset"; extra descriptors say "SAFE" */ |
679 | fs_eth_function[1] = (struct usb_descriptor_header *) &subset_data_intf; | |
680 | fs_eth_function[2] = (struct usb_descriptor_header *) &header_desc; | |
681 | fs_eth_function[3] = (struct usb_descriptor_header *) &mdlm_desc; | |
682 | fs_eth_function[4] = (struct usb_descriptor_header *) &mdlm_detail_desc; | |
683 | fs_eth_function[5] = (struct usb_descriptor_header *) ðer_desc; | |
684 | fs_eth_function[6] = (struct usb_descriptor_header *) &fs_source_desc; | |
685 | fs_eth_function[7] = (struct usb_descriptor_header *) &fs_sink_desc; | |
686 | fs_eth_function[8] = NULL; | |
687 | #else | |
688 | fs_eth_function[1] = NULL; | |
689 | #endif | |
690 | } | |
691 | ||
7612a43d VK |
692 | #ifdef CONFIG_USB_ETH_RNDIS |
693 | static const struct usb_descriptor_header *fs_rndis_function[] = { | |
694 | (struct usb_descriptor_header *) &otg_descriptor, | |
695 | /* control interface matches ACM, not Ethernet */ | |
696 | (struct usb_descriptor_header *) &rndis_control_intf, | |
697 | (struct usb_descriptor_header *) &header_desc, | |
698 | (struct usb_descriptor_header *) &call_mgmt_descriptor, | |
699 | (struct usb_descriptor_header *) &acm_descriptor, | |
700 | (struct usb_descriptor_header *) &union_desc, | |
701 | (struct usb_descriptor_header *) &fs_status_desc, | |
702 | /* data interface has no altsetting */ | |
703 | (struct usb_descriptor_header *) &rndis_data_intf, | |
704 | (struct usb_descriptor_header *) &fs_source_desc, | |
705 | (struct usb_descriptor_header *) &fs_sink_desc, | |
706 | NULL, | |
707 | }; | |
708 | #endif | |
709 | ||
23cd1385 RB |
710 | /* |
711 | * usb 2.0 devices need to expose both high speed and full speed | |
712 | * descriptors, unless they only run at full speed. | |
713 | */ | |
714 | ||
2bb37884 | 715 | #if defined(CONFIG_USB_ETH_CDC) || defined(CONFIG_USB_ETH_RNDIS) |
23cd1385 RB |
716 | static struct usb_endpoint_descriptor |
717 | hs_status_desc = { | |
718 | .bLength = USB_DT_ENDPOINT_SIZE, | |
719 | .bDescriptorType = USB_DT_ENDPOINT, | |
720 | ||
721 | .bmAttributes = USB_ENDPOINT_XFER_INT, | |
6142e0ae | 722 | .wMaxPacketSize = __constant_cpu_to_le16(STATUS_BYTECOUNT), |
23cd1385 RB |
723 | .bInterval = LOG2_STATUS_INTERVAL_MSEC + 4, |
724 | }; | |
2bb37884 | 725 | #endif /* CONFIG_USB_ETH_CDC */ |
23cd1385 RB |
726 | |
727 | static struct usb_endpoint_descriptor | |
728 | hs_source_desc = { | |
729 | .bLength = USB_DT_ENDPOINT_SIZE, | |
730 | .bDescriptorType = USB_DT_ENDPOINT, | |
731 | ||
732 | .bmAttributes = USB_ENDPOINT_XFER_BULK, | |
6142e0ae | 733 | .wMaxPacketSize = __constant_cpu_to_le16(512), |
23cd1385 RB |
734 | }; |
735 | ||
736 | static struct usb_endpoint_descriptor | |
737 | hs_sink_desc = { | |
738 | .bLength = USB_DT_ENDPOINT_SIZE, | |
739 | .bDescriptorType = USB_DT_ENDPOINT, | |
740 | ||
741 | .bmAttributes = USB_ENDPOINT_XFER_BULK, | |
6142e0ae | 742 | .wMaxPacketSize = __constant_cpu_to_le16(512), |
23cd1385 RB |
743 | }; |
744 | ||
745 | static struct usb_qualifier_descriptor | |
746 | dev_qualifier = { | |
747 | .bLength = sizeof dev_qualifier, | |
748 | .bDescriptorType = USB_DT_DEVICE_QUALIFIER, | |
749 | ||
6142e0ae | 750 | .bcdUSB = __constant_cpu_to_le16(0x0200), |
23cd1385 RB |
751 | .bDeviceClass = USB_CLASS_COMM, |
752 | ||
753 | .bNumConfigurations = 1, | |
754 | }; | |
755 | ||
6142e0ae | 756 | static const struct usb_descriptor_header *hs_eth_function[11] = { |
23cd1385 | 757 | (struct usb_descriptor_header *) &otg_descriptor, |
2bb37884 | 758 | #ifdef CONFIG_USB_ETH_CDC |
23cd1385 RB |
759 | /* "cdc" mode descriptors */ |
760 | (struct usb_descriptor_header *) &control_intf, | |
761 | (struct usb_descriptor_header *) &header_desc, | |
762 | (struct usb_descriptor_header *) &union_desc, | |
763 | (struct usb_descriptor_header *) ðer_desc, | |
764 | /* NOTE: status endpoint may need to be removed */ | |
765 | (struct usb_descriptor_header *) &hs_status_desc, | |
766 | /* data interface, with altsetting */ | |
767 | (struct usb_descriptor_header *) &data_nop_intf, | |
768 | (struct usb_descriptor_header *) &data_intf, | |
769 | (struct usb_descriptor_header *) &hs_source_desc, | |
770 | (struct usb_descriptor_header *) &hs_sink_desc, | |
771 | NULL, | |
2bb37884 | 772 | #endif /* CONFIG_USB_ETH_CDC */ |
23cd1385 RB |
773 | }; |
774 | ||
775 | static inline void hs_subset_descriptors(void) | |
776 | { | |
2bb37884 | 777 | #ifdef CONFIG_USB_ETH_SUBSET |
23cd1385 RB |
778 | /* behavior is "CDC Subset"; extra descriptors say "SAFE" */ |
779 | hs_eth_function[1] = (struct usb_descriptor_header *) &subset_data_intf; | |
780 | hs_eth_function[2] = (struct usb_descriptor_header *) &header_desc; | |
781 | hs_eth_function[3] = (struct usb_descriptor_header *) &mdlm_desc; | |
782 | hs_eth_function[4] = (struct usb_descriptor_header *) &mdlm_detail_desc; | |
783 | hs_eth_function[5] = (struct usb_descriptor_header *) ðer_desc; | |
784 | hs_eth_function[6] = (struct usb_descriptor_header *) &hs_source_desc; | |
785 | hs_eth_function[7] = (struct usb_descriptor_header *) &hs_sink_desc; | |
786 | hs_eth_function[8] = NULL; | |
787 | #else | |
788 | hs_eth_function[1] = NULL; | |
789 | #endif | |
790 | } | |
791 | ||
7612a43d VK |
792 | #ifdef CONFIG_USB_ETH_RNDIS |
793 | static const struct usb_descriptor_header *hs_rndis_function[] = { | |
794 | (struct usb_descriptor_header *) &otg_descriptor, | |
795 | /* control interface matches ACM, not Ethernet */ | |
796 | (struct usb_descriptor_header *) &rndis_control_intf, | |
797 | (struct usb_descriptor_header *) &header_desc, | |
798 | (struct usb_descriptor_header *) &call_mgmt_descriptor, | |
799 | (struct usb_descriptor_header *) &acm_descriptor, | |
800 | (struct usb_descriptor_header *) &union_desc, | |
801 | (struct usb_descriptor_header *) &hs_status_desc, | |
802 | /* data interface has no altsetting */ | |
803 | (struct usb_descriptor_header *) &rndis_data_intf, | |
804 | (struct usb_descriptor_header *) &hs_source_desc, | |
805 | (struct usb_descriptor_header *) &hs_sink_desc, | |
806 | NULL, | |
807 | }; | |
808 | #endif | |
809 | ||
810 | ||
23cd1385 RB |
811 | /* maxpacket and other transfer characteristics vary by speed. */ |
812 | static inline struct usb_endpoint_descriptor * | |
813 | ep_desc(struct usb_gadget *g, struct usb_endpoint_descriptor *hs, | |
814 | struct usb_endpoint_descriptor *fs) | |
815 | { | |
816 | if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH) | |
817 | return hs; | |
818 | return fs; | |
819 | } | |
820 | ||
23cd1385 RB |
821 | /*-------------------------------------------------------------------------*/ |
822 | ||
823 | /* descriptors that are built on-demand */ | |
824 | ||
6142e0ae VK |
825 | static char manufacturer[50]; |
826 | static char product_desc[40] = DRIVER_DESC; | |
827 | static char serial_number[20]; | |
23cd1385 RB |
828 | |
829 | /* address that the host will use ... usually assigned at random */ | |
6142e0ae | 830 | static char ethaddr[2 * ETH_ALEN + 1]; |
23cd1385 RB |
831 | |
832 | /* static strings, in UTF-8 */ | |
6142e0ae | 833 | static struct usb_string strings[] = { |
23cd1385 RB |
834 | { STRING_MANUFACTURER, manufacturer, }, |
835 | { STRING_PRODUCT, product_desc, }, | |
836 | { STRING_SERIALNUMBER, serial_number, }, | |
837 | { STRING_DATA, "Ethernet Data", }, | |
838 | { STRING_ETHADDR, ethaddr, }, | |
2bb37884 | 839 | #ifdef CONFIG_USB_ETH_CDC |
23cd1385 RB |
840 | { STRING_CDC, "CDC Ethernet", }, |
841 | { STRING_CONTROL, "CDC Communications Control", }, | |
842 | #endif | |
2bb37884 | 843 | #ifdef CONFIG_USB_ETH_SUBSET |
23cd1385 | 844 | { STRING_SUBSET, "CDC Ethernet Subset", }, |
7612a43d VK |
845 | #endif |
846 | #ifdef CONFIG_USB_ETH_RNDIS | |
847 | { STRING_RNDIS, "RNDIS", }, | |
848 | { STRING_RNDIS_CONTROL, "RNDIS Communications Control", }, | |
23cd1385 RB |
849 | #endif |
850 | { } /* end of list */ | |
851 | }; | |
852 | ||
853 | static struct usb_gadget_strings stringtab = { | |
854 | .language = 0x0409, /* en-us */ | |
855 | .strings = strings, | |
856 | }; | |
857 | ||
23cd1385 | 858 | /*============================================================================*/ |
5290759c JF |
859 | DEFINE_CACHE_ALIGN_BUFFER(u8, control_req, USB_BUFSIZ); |
860 | ||
2bb37884 | 861 | #if defined(CONFIG_USB_ETH_CDC) || defined(CONFIG_USB_ETH_RNDIS) |
5290759c | 862 | DEFINE_CACHE_ALIGN_BUFFER(u8, status_req, STATUS_BYTECOUNT); |
563aed25 | 863 | #endif |
23cd1385 | 864 | |
23cd1385 RB |
865 | /*============================================================================*/ |
866 | ||
867 | /* | |
868 | * one config, two interfaces: control, data. | |
869 | * complications: class descriptors, and an altsetting. | |
870 | */ | |
871 | static int | |
872 | config_buf(struct usb_gadget *g, u8 *buf, u8 type, unsigned index, int is_otg) | |
873 | { | |
874 | int len; | |
875 | const struct usb_config_descriptor *config; | |
876 | const struct usb_descriptor_header **function; | |
877 | int hs = 0; | |
878 | ||
879 | if (gadget_is_dualspeed(g)) { | |
880 | hs = (g->speed == USB_SPEED_HIGH); | |
881 | if (type == USB_DT_OTHER_SPEED_CONFIG) | |
882 | hs = !hs; | |
883 | } | |
884 | #define which_fn(t) (hs ? hs_ ## t ## _function : fs_ ## t ## _function) | |
885 | ||
886 | if (index >= device_desc.bNumConfigurations) | |
887 | return -EINVAL; | |
888 | ||
7612a43d VK |
889 | #ifdef CONFIG_USB_ETH_RNDIS |
890 | /* | |
891 | * list the RNDIS config first, to make Microsoft's drivers | |
892 | * happy. DOCSIS 1.0 needs this too. | |
893 | */ | |
894 | if (device_desc.bNumConfigurations == 2 && index == 0) { | |
895 | config = &rndis_config; | |
896 | function = which_fn(rndis); | |
897 | } else | |
898 | #endif | |
899 | { | |
900 | config = ð_config; | |
901 | function = which_fn(eth); | |
902 | } | |
23cd1385 RB |
903 | |
904 | /* for now, don't advertise srp-only devices */ | |
905 | if (!is_otg) | |
906 | function++; | |
907 | ||
6142e0ae | 908 | len = usb_gadget_config_buf(config, buf, USB_BUFSIZ, function); |
23cd1385 RB |
909 | if (len < 0) |
910 | return len; | |
911 | ((struct usb_config_descriptor *) buf)->bDescriptorType = type; | |
912 | return len; | |
913 | } | |
914 | ||
915 | /*-------------------------------------------------------------------------*/ | |
916 | ||
7612a43d | 917 | static void eth_start(struct eth_dev *dev, gfp_t gfp_flags); |
6142e0ae | 918 | static int alloc_requests(struct eth_dev *dev, unsigned n, gfp_t gfp_flags); |
23cd1385 RB |
919 | |
920 | static int | |
6142e0ae | 921 | set_ether_config(struct eth_dev *dev, gfp_t gfp_flags) |
23cd1385 RB |
922 | { |
923 | int result = 0; | |
924 | struct usb_gadget *gadget = dev->gadget; | |
925 | ||
2bb37884 | 926 | #if defined(CONFIG_USB_ETH_CDC) || defined(CONFIG_USB_ETH_RNDIS) |
7612a43d | 927 | /* status endpoint used for RNDIS and (optionally) CDC */ |
23cd1385 | 928 | if (!subset_active(dev) && dev->status_ep) { |
6142e0ae | 929 | dev->status = ep_desc(gadget, &hs_status_desc, |
23cd1385 RB |
930 | &fs_status_desc); |
931 | dev->status_ep->driver_data = dev; | |
932 | ||
6142e0ae | 933 | result = usb_ep_enable(dev->status_ep, dev->status); |
23cd1385 | 934 | if (result != 0) { |
7de73185 | 935 | debug("enable %s --> %d\n", |
23cd1385 RB |
936 | dev->status_ep->name, result); |
937 | goto done; | |
938 | } | |
939 | } | |
940 | #endif | |
941 | ||
942 | dev->in = ep_desc(gadget, &hs_source_desc, &fs_source_desc); | |
943 | dev->in_ep->driver_data = dev; | |
944 | ||
945 | dev->out = ep_desc(gadget, &hs_sink_desc, &fs_sink_desc); | |
946 | dev->out_ep->driver_data = dev; | |
947 | ||
6142e0ae VK |
948 | /* |
949 | * With CDC, the host isn't allowed to use these two data | |
23cd1385 RB |
950 | * endpoints in the default altsetting for the interface. |
951 | * so we don't activate them yet. Reset from SET_INTERFACE. | |
7612a43d VK |
952 | * |
953 | * Strictly speaking RNDIS should work the same: activation is | |
954 | * a side effect of setting a packet filter. Deactivation is | |
955 | * from REMOTE_NDIS_HALT_MSG, reset from REMOTE_NDIS_RESET_MSG. | |
23cd1385 RB |
956 | */ |
957 | if (!cdc_active(dev)) { | |
6142e0ae | 958 | result = usb_ep_enable(dev->in_ep, dev->in); |
23cd1385 | 959 | if (result != 0) { |
7de73185 | 960 | debug("enable %s --> %d\n", |
23cd1385 RB |
961 | dev->in_ep->name, result); |
962 | goto done; | |
963 | } | |
964 | ||
6142e0ae | 965 | result = usb_ep_enable(dev->out_ep, dev->out); |
23cd1385 | 966 | if (result != 0) { |
7de73185 | 967 | debug("enable %s --> %d\n", |
23cd1385 RB |
968 | dev->out_ep->name, result); |
969 | goto done; | |
970 | } | |
971 | } | |
972 | ||
973 | done: | |
974 | if (result == 0) | |
6142e0ae | 975 | result = alloc_requests(dev, qlen(gadget), gfp_flags); |
23cd1385 RB |
976 | |
977 | /* on error, disable any endpoints */ | |
978 | if (result < 0) { | |
d5292c16 | 979 | if (!subset_active(dev) && dev->status_ep) |
6142e0ae | 980 | (void) usb_ep_disable(dev->status_ep); |
23cd1385 | 981 | dev->status = NULL; |
6142e0ae VK |
982 | (void) usb_ep_disable(dev->in_ep); |
983 | (void) usb_ep_disable(dev->out_ep); | |
23cd1385 RB |
984 | dev->in = NULL; |
985 | dev->out = NULL; | |
7612a43d VK |
986 | } else if (!cdc_active(dev)) { |
987 | /* | |
988 | * activate non-CDC configs right away | |
989 | * this isn't strictly according to the RNDIS spec | |
990 | */ | |
991 | eth_start(dev, GFP_ATOMIC); | |
23cd1385 RB |
992 | } |
993 | ||
994 | /* caller is responsible for cleanup on error */ | |
995 | return result; | |
996 | } | |
997 | ||
6142e0ae | 998 | static void eth_reset_config(struct eth_dev *dev) |
23cd1385 RB |
999 | { |
1000 | if (dev->config == 0) | |
1001 | return; | |
1002 | ||
7de73185 VK |
1003 | debug("%s\n", __func__); |
1004 | ||
7612a43d VK |
1005 | rndis_uninit(dev->rndis_config); |
1006 | ||
6142e0ae VK |
1007 | /* |
1008 | * disable endpoints, forcing (synchronous) completion of | |
23cd1385 RB |
1009 | * pending i/o. then free the requests. |
1010 | */ | |
1011 | ||
1012 | if (dev->in) { | |
6142e0ae | 1013 | usb_ep_disable(dev->in_ep); |
23cd1385 | 1014 | if (dev->tx_req) { |
6142e0ae VK |
1015 | usb_ep_free_request(dev->in_ep, dev->tx_req); |
1016 | dev->tx_req = NULL; | |
23cd1385 RB |
1017 | } |
1018 | } | |
1019 | if (dev->out) { | |
6142e0ae | 1020 | usb_ep_disable(dev->out_ep); |
23cd1385 | 1021 | if (dev->rx_req) { |
6142e0ae VK |
1022 | usb_ep_free_request(dev->out_ep, dev->rx_req); |
1023 | dev->rx_req = NULL; | |
23cd1385 RB |
1024 | } |
1025 | } | |
6142e0ae VK |
1026 | if (dev->status) |
1027 | usb_ep_disable(dev->status_ep); | |
1028 | ||
7612a43d | 1029 | dev->rndis = 0; |
23cd1385 RB |
1030 | dev->cdc_filter = 0; |
1031 | dev->config = 0; | |
1032 | } | |
1033 | ||
6142e0ae VK |
1034 | /* |
1035 | * change our operational config. must agree with the code | |
23cd1385 RB |
1036 | * that returns config descriptors, and altsetting code. |
1037 | */ | |
6142e0ae VK |
1038 | static int eth_set_config(struct eth_dev *dev, unsigned number, |
1039 | gfp_t gfp_flags) | |
23cd1385 RB |
1040 | { |
1041 | int result = 0; | |
1042 | struct usb_gadget *gadget = dev->gadget; | |
1043 | ||
6142e0ae | 1044 | eth_reset_config(dev); |
23cd1385 RB |
1045 | |
1046 | switch (number) { | |
1047 | case DEV_CONFIG_VALUE: | |
6142e0ae | 1048 | result = set_ether_config(dev, gfp_flags); |
23cd1385 | 1049 | break; |
7612a43d VK |
1050 | #ifdef CONFIG_USB_ETH_RNDIS |
1051 | case DEV_RNDIS_CONFIG_VALUE: | |
1052 | dev->rndis = 1; | |
1053 | result = set_ether_config(dev, gfp_flags); | |
1054 | break; | |
1055 | #endif | |
23cd1385 RB |
1056 | default: |
1057 | result = -EINVAL; | |
1058 | /* FALL THROUGH */ | |
1059 | case 0: | |
1060 | break; | |
1061 | } | |
1062 | ||
1063 | if (result) { | |
1064 | if (number) | |
6142e0ae | 1065 | eth_reset_config(dev); |
23cd1385 RB |
1066 | usb_gadget_vbus_draw(dev->gadget, |
1067 | gadget_is_otg(dev->gadget) ? 8 : 100); | |
1068 | } else { | |
1069 | char *speed; | |
1070 | unsigned power; | |
1071 | ||
1072 | power = 2 * eth_config.bMaxPower; | |
1073 | usb_gadget_vbus_draw(dev->gadget, power); | |
1074 | ||
1075 | switch (gadget->speed) { | |
6142e0ae VK |
1076 | case USB_SPEED_FULL: |
1077 | speed = "full"; break; | |
23cd1385 | 1078 | #ifdef CONFIG_USB_GADGET_DUALSPEED |
6142e0ae VK |
1079 | case USB_SPEED_HIGH: |
1080 | speed = "high"; break; | |
23cd1385 | 1081 | #endif |
6142e0ae VK |
1082 | default: |
1083 | speed = "?"; break; | |
23cd1385 RB |
1084 | } |
1085 | ||
1086 | dev->config = number; | |
7de73185 | 1087 | printf("%s speed config #%d: %d mA, %s, using %s\n", |
23cd1385 | 1088 | speed, number, power, driver_desc, |
7612a43d VK |
1089 | rndis_active(dev) |
1090 | ? "RNDIS" | |
1091 | : (cdc_active(dev) | |
1092 | ? "CDC Ethernet" | |
23cd1385 RB |
1093 | : "CDC Ethernet Subset")); |
1094 | } | |
1095 | return result; | |
1096 | } | |
1097 | ||
1098 | /*-------------------------------------------------------------------------*/ | |
1099 | ||
2bb37884 | 1100 | #ifdef CONFIG_USB_ETH_CDC |
23cd1385 | 1101 | |
6142e0ae VK |
1102 | /* |
1103 | * The interrupt endpoint is used in CDC networking models (Ethernet, ATM) | |
23cd1385 | 1104 | * only to notify the host about link status changes (which we support) or |
7612a43d | 1105 | * report completion of some encapsulated command (as used in RNDIS). Since |
23cd1385 RB |
1106 | * we want this CDC Ethernet code to be vendor-neutral, we don't use that |
1107 | * command mechanism; and only one status request is ever queued. | |
1108 | */ | |
6142e0ae | 1109 | static void eth_status_complete(struct usb_ep *ep, struct usb_request *req) |
23cd1385 RB |
1110 | { |
1111 | struct usb_cdc_notification *event = req->buf; | |
1112 | int value = req->status; | |
1113 | struct eth_dev *dev = ep->driver_data; | |
1114 | ||
1115 | /* issue the second notification if host reads the first */ | |
1116 | if (event->bNotificationType == USB_CDC_NOTIFY_NETWORK_CONNECTION | |
1117 | && value == 0) { | |
1118 | __le32 *data = req->buf + sizeof *event; | |
1119 | ||
1120 | event->bmRequestType = 0xA1; | |
1121 | event->bNotificationType = USB_CDC_NOTIFY_SPEED_CHANGE; | |
6142e0ae VK |
1122 | event->wValue = __constant_cpu_to_le16(0); |
1123 | event->wIndex = __constant_cpu_to_le16(1); | |
1124 | event->wLength = __constant_cpu_to_le16(8); | |
23cd1385 RB |
1125 | |
1126 | /* SPEED_CHANGE data is up/down speeds in bits/sec */ | |
6142e0ae | 1127 | data[0] = data[1] = cpu_to_le32(BITRATE(dev->gadget)); |
23cd1385 RB |
1128 | |
1129 | req->length = STATUS_BYTECOUNT; | |
6142e0ae | 1130 | value = usb_ep_queue(ep, req, GFP_ATOMIC); |
7de73185 | 1131 | debug("send SPEED_CHANGE --> %d\n", value); |
23cd1385 RB |
1132 | if (value == 0) |
1133 | return; | |
1134 | } else if (value != -ECONNRESET) { | |
7de73185 | 1135 | debug("event %02x --> %d\n", |
23cd1385 | 1136 | event->bNotificationType, value); |
6142e0ae VK |
1137 | if (event->bNotificationType == |
1138 | USB_CDC_NOTIFY_SPEED_CHANGE) { | |
17b4f308 | 1139 | dev->network_started = 1; |
23cd1385 RB |
1140 | printf("USB network up!\n"); |
1141 | } | |
1142 | } | |
1143 | req->context = NULL; | |
1144 | } | |
1145 | ||
6142e0ae | 1146 | static void issue_start_status(struct eth_dev *dev) |
23cd1385 RB |
1147 | { |
1148 | struct usb_request *req = dev->stat_req; | |
1149 | struct usb_cdc_notification *event; | |
1150 | int value; | |
1151 | ||
6142e0ae VK |
1152 | /* |
1153 | * flush old status | |
23cd1385 RB |
1154 | * |
1155 | * FIXME ugly idiom, maybe we'd be better with just | |
1156 | * a "cancel the whole queue" primitive since any | |
1157 | * unlink-one primitive has way too many error modes. | |
1158 | * here, we "know" toggle is already clear... | |
1159 | * | |
1160 | * FIXME iff req->context != null just dequeue it | |
1161 | */ | |
6142e0ae VK |
1162 | usb_ep_disable(dev->status_ep); |
1163 | usb_ep_enable(dev->status_ep, dev->status); | |
23cd1385 | 1164 | |
6142e0ae VK |
1165 | /* |
1166 | * 3.8.1 says to issue first NETWORK_CONNECTION, then | |
23cd1385 RB |
1167 | * a SPEED_CHANGE. could be useful in some configs. |
1168 | */ | |
1169 | event = req->buf; | |
1170 | event->bmRequestType = 0xA1; | |
1171 | event->bNotificationType = USB_CDC_NOTIFY_NETWORK_CONNECTION; | |
6142e0ae VK |
1172 | event->wValue = __constant_cpu_to_le16(1); /* connected */ |
1173 | event->wIndex = __constant_cpu_to_le16(1); | |
23cd1385 RB |
1174 | event->wLength = 0; |
1175 | ||
1176 | req->length = sizeof *event; | |
1177 | req->complete = eth_status_complete; | |
1178 | req->context = dev; | |
1179 | ||
6142e0ae | 1180 | value = usb_ep_queue(dev->status_ep, req, GFP_ATOMIC); |
23cd1385 | 1181 | if (value < 0) |
7de73185 | 1182 | debug("status buf queue --> %d\n", value); |
23cd1385 RB |
1183 | } |
1184 | ||
1185 | #endif | |
1186 | ||
1187 | /*-------------------------------------------------------------------------*/ | |
1188 | ||
6142e0ae | 1189 | static void eth_setup_complete(struct usb_ep *ep, struct usb_request *req) |
23cd1385 RB |
1190 | { |
1191 | if (req->status || req->actual != req->length) | |
7de73185 | 1192 | debug("setup complete --> %d, %d/%d\n", |
23cd1385 RB |
1193 | req->status, req->actual, req->length); |
1194 | } | |
1195 | ||
7612a43d VK |
1196 | #ifdef CONFIG_USB_ETH_RNDIS |
1197 | ||
1198 | static void rndis_response_complete(struct usb_ep *ep, struct usb_request *req) | |
1199 | { | |
1200 | if (req->status || req->actual != req->length) | |
1201 | debug("rndis response complete --> %d, %d/%d\n", | |
1202 | req->status, req->actual, req->length); | |
1203 | ||
1204 | /* done sending after USB_CDC_GET_ENCAPSULATED_RESPONSE */ | |
1205 | } | |
1206 | ||
1207 | static void rndis_command_complete(struct usb_ep *ep, struct usb_request *req) | |
1208 | { | |
1209 | struct eth_dev *dev = ep->driver_data; | |
1210 | int status; | |
1211 | ||
1212 | /* received RNDIS command from USB_CDC_SEND_ENCAPSULATED_COMMAND */ | |
1213 | status = rndis_msg_parser(dev->rndis_config, (u8 *) req->buf); | |
1214 | if (status < 0) | |
9b643e31 | 1215 | pr_err("%s: rndis parse error %d", __func__, status); |
7612a43d VK |
1216 | } |
1217 | ||
1218 | #endif /* RNDIS */ | |
1219 | ||
23cd1385 RB |
1220 | /* |
1221 | * The setup() callback implements all the ep0 functionality that's not | |
1222 | * handled lower down. CDC has a number of less-common features: | |
1223 | * | |
1224 | * - two interfaces: control, and ethernet data | |
1225 | * - Ethernet data interface has two altsettings: default, and active | |
1226 | * - class-specific descriptors for the control interface | |
1227 | * - class-specific control requests | |
1228 | */ | |
1229 | static int | |
6142e0ae | 1230 | eth_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) |
23cd1385 | 1231 | { |
6142e0ae | 1232 | struct eth_dev *dev = get_gadget_data(gadget); |
23cd1385 RB |
1233 | struct usb_request *req = dev->req; |
1234 | int value = -EOPNOTSUPP; | |
1235 | u16 wIndex = le16_to_cpu(ctrl->wIndex); | |
1236 | u16 wValue = le16_to_cpu(ctrl->wValue); | |
1237 | u16 wLength = le16_to_cpu(ctrl->wLength); | |
1238 | ||
6142e0ae VK |
1239 | /* |
1240 | * descriptors just go into the pre-allocated ep0 buffer, | |
23cd1385 RB |
1241 | * while config change events may enable network traffic. |
1242 | */ | |
1243 | ||
7de73185 | 1244 | debug("%s\n", __func__); |
23cd1385 RB |
1245 | |
1246 | req->complete = eth_setup_complete; | |
1247 | switch (ctrl->bRequest) { | |
1248 | ||
1249 | case USB_REQ_GET_DESCRIPTOR: | |
1250 | if (ctrl->bRequestType != USB_DIR_IN) | |
1251 | break; | |
1252 | switch (wValue >> 8) { | |
1253 | ||
1254 | case USB_DT_DEVICE: | |
04afd5b5 | 1255 | device_desc.bMaxPacketSize0 = gadget->ep0->maxpacket; |
6142e0ae VK |
1256 | value = min(wLength, (u16) sizeof device_desc); |
1257 | memcpy(req->buf, &device_desc, value); | |
23cd1385 RB |
1258 | break; |
1259 | case USB_DT_DEVICE_QUALIFIER: | |
1260 | if (!gadget_is_dualspeed(gadget)) | |
1261 | break; | |
6142e0ae VK |
1262 | value = min(wLength, (u16) sizeof dev_qualifier); |
1263 | memcpy(req->buf, &dev_qualifier, value); | |
23cd1385 RB |
1264 | break; |
1265 | ||
1266 | case USB_DT_OTHER_SPEED_CONFIG: | |
1267 | if (!gadget_is_dualspeed(gadget)) | |
1268 | break; | |
1269 | /* FALLTHROUGH */ | |
1270 | case USB_DT_CONFIG: | |
1271 | value = config_buf(gadget, req->buf, | |
1272 | wValue >> 8, | |
1273 | wValue & 0xff, | |
1274 | gadget_is_otg(gadget)); | |
1275 | if (value >= 0) | |
6142e0ae | 1276 | value = min(wLength, (u16) value); |
23cd1385 RB |
1277 | break; |
1278 | ||
1279 | case USB_DT_STRING: | |
6142e0ae | 1280 | value = usb_gadget_get_string(&stringtab, |
23cd1385 RB |
1281 | wValue & 0xff, req->buf); |
1282 | ||
1283 | if (value >= 0) | |
6142e0ae | 1284 | value = min(wLength, (u16) value); |
23cd1385 RB |
1285 | |
1286 | break; | |
1287 | } | |
1288 | break; | |
1289 | ||
1290 | case USB_REQ_SET_CONFIGURATION: | |
1291 | if (ctrl->bRequestType != 0) | |
1292 | break; | |
1293 | if (gadget->a_hnp_support) | |
7de73185 | 1294 | debug("HNP available\n"); |
23cd1385 | 1295 | else if (gadget->a_alt_hnp_support) |
7de73185 | 1296 | debug("HNP needs a different root port\n"); |
6142e0ae | 1297 | value = eth_set_config(dev, wValue, GFP_ATOMIC); |
23cd1385 RB |
1298 | break; |
1299 | case USB_REQ_GET_CONFIGURATION: | |
1300 | if (ctrl->bRequestType != USB_DIR_IN) | |
1301 | break; | |
1302 | *(u8 *)req->buf = dev->config; | |
6142e0ae | 1303 | value = min(wLength, (u16) 1); |
23cd1385 RB |
1304 | break; |
1305 | ||
1306 | case USB_REQ_SET_INTERFACE: | |
1307 | if (ctrl->bRequestType != USB_RECIP_INTERFACE | |
1308 | || !dev->config | |
1309 | || wIndex > 1) | |
1310 | break; | |
1311 | if (!cdc_active(dev) && wIndex != 0) | |
1312 | break; | |
1313 | ||
2bb37884 | 1314 | #ifdef CONFIG_USB_ETH_CDC |
23cd1385 RB |
1315 | switch (wIndex) { |
1316 | case 0: /* control/master intf */ | |
1317 | if (wValue != 0) | |
1318 | break; | |
1319 | if (dev->status) { | |
6142e0ae VK |
1320 | usb_ep_disable(dev->status_ep); |
1321 | usb_ep_enable(dev->status_ep, dev->status); | |
23cd1385 | 1322 | } |
7612a43d | 1323 | |
23cd1385 RB |
1324 | value = 0; |
1325 | break; | |
1326 | case 1: /* data intf */ | |
1327 | if (wValue > 1) | |
1328 | break; | |
6142e0ae VK |
1329 | usb_ep_disable(dev->in_ep); |
1330 | usb_ep_disable(dev->out_ep); | |
23cd1385 | 1331 | |
6142e0ae VK |
1332 | /* |
1333 | * CDC requires the data transfers not be done from | |
23cd1385 RB |
1334 | * the default interface setting ... also, setting |
1335 | * the non-default interface resets filters etc. | |
1336 | */ | |
1337 | if (wValue == 1) { | |
6142e0ae | 1338 | if (!cdc_active(dev)) |
23cd1385 | 1339 | break; |
6142e0ae VK |
1340 | usb_ep_enable(dev->in_ep, dev->in); |
1341 | usb_ep_enable(dev->out_ep, dev->out); | |
23cd1385 RB |
1342 | dev->cdc_filter = DEFAULT_FILTER; |
1343 | if (dev->status) | |
6142e0ae | 1344 | issue_start_status(dev); |
7612a43d | 1345 | eth_start(dev, GFP_ATOMIC); |
23cd1385 | 1346 | } |
23cd1385 RB |
1347 | value = 0; |
1348 | break; | |
1349 | } | |
1350 | #else | |
6142e0ae VK |
1351 | /* |
1352 | * FIXME this is wrong, as is the assumption that | |
23cd1385 RB |
1353 | * all non-PXA hardware talks real CDC ... |
1354 | */ | |
7de73185 | 1355 | debug("set_interface ignored!\n"); |
2bb37884 | 1356 | #endif /* CONFIG_USB_ETH_CDC */ |
23cd1385 RB |
1357 | break; |
1358 | case USB_REQ_GET_INTERFACE: | |
1359 | if (ctrl->bRequestType != (USB_DIR_IN|USB_RECIP_INTERFACE) | |
1360 | || !dev->config | |
1361 | || wIndex > 1) | |
1362 | break; | |
7612a43d | 1363 | if (!(cdc_active(dev) || rndis_active(dev)) && wIndex != 0) |
23cd1385 RB |
1364 | break; |
1365 | ||
1366 | /* for CDC, iff carrier is on, data interface is active. */ | |
7612a43d | 1367 | if (rndis_active(dev) || wIndex != 1) |
23cd1385 RB |
1368 | *(u8 *)req->buf = 0; |
1369 | else { | |
1370 | /* *(u8 *)req->buf = netif_carrier_ok (dev->net) ? 1 : 0; */ | |
1371 | /* carrier always ok ...*/ | |
1372 | *(u8 *)req->buf = 1 ; | |
1373 | } | |
6142e0ae | 1374 | value = min(wLength, (u16) 1); |
23cd1385 RB |
1375 | break; |
1376 | ||
2bb37884 | 1377 | #ifdef CONFIG_USB_ETH_CDC |
23cd1385 | 1378 | case USB_CDC_SET_ETHERNET_PACKET_FILTER: |
6142e0ae VK |
1379 | /* |
1380 | * see 6.2.30: no data, wIndex = interface, | |
23cd1385 RB |
1381 | * wValue = packet filter bitmap |
1382 | */ | |
1383 | if (ctrl->bRequestType != (USB_TYPE_CLASS|USB_RECIP_INTERFACE) | |
1384 | || !cdc_active(dev) | |
1385 | || wLength != 0 | |
1386 | || wIndex > 1) | |
1387 | break; | |
7de73185 | 1388 | debug("packet filter %02x\n", wValue); |
23cd1385 RB |
1389 | dev->cdc_filter = wValue; |
1390 | value = 0; | |
1391 | break; | |
1392 | ||
6142e0ae VK |
1393 | /* |
1394 | * and potentially: | |
23cd1385 RB |
1395 | * case USB_CDC_SET_ETHERNET_MULTICAST_FILTERS: |
1396 | * case USB_CDC_SET_ETHERNET_PM_PATTERN_FILTER: | |
1397 | * case USB_CDC_GET_ETHERNET_PM_PATTERN_FILTER: | |
1398 | * case USB_CDC_GET_ETHERNET_STATISTIC: | |
1399 | */ | |
1400 | ||
2bb37884 | 1401 | #endif /* CONFIG_USB_ETH_CDC */ |
23cd1385 | 1402 | |
7612a43d VK |
1403 | #ifdef CONFIG_USB_ETH_RNDIS |
1404 | /* | |
1405 | * RNDIS uses the CDC command encapsulation mechanism to implement | |
1406 | * an RPC scheme, with much getting/setting of attributes by OID. | |
1407 | */ | |
1408 | case USB_CDC_SEND_ENCAPSULATED_COMMAND: | |
1409 | if (ctrl->bRequestType != (USB_TYPE_CLASS|USB_RECIP_INTERFACE) | |
1410 | || !rndis_active(dev) | |
1411 | || wLength > USB_BUFSIZ | |
1412 | || wValue | |
1413 | || rndis_control_intf.bInterfaceNumber | |
1414 | != wIndex) | |
1415 | break; | |
1416 | /* read the request, then process it */ | |
1417 | value = wLength; | |
1418 | req->complete = rndis_command_complete; | |
1419 | /* later, rndis_control_ack () sends a notification */ | |
1420 | break; | |
1421 | ||
1422 | case USB_CDC_GET_ENCAPSULATED_RESPONSE: | |
1423 | if ((USB_DIR_IN|USB_TYPE_CLASS|USB_RECIP_INTERFACE) | |
1424 | == ctrl->bRequestType | |
1425 | && rndis_active(dev) | |
1426 | /* && wLength >= 0x0400 */ | |
1427 | && !wValue | |
1428 | && rndis_control_intf.bInterfaceNumber | |
1429 | == wIndex) { | |
1430 | u8 *buf; | |
1431 | u32 n; | |
1432 | ||
1433 | /* return the result */ | |
1434 | buf = rndis_get_next_response(dev->rndis_config, &n); | |
1435 | if (buf) { | |
1436 | memcpy(req->buf, buf, n); | |
1437 | req->complete = rndis_response_complete; | |
1438 | rndis_free_response(dev->rndis_config, buf); | |
1439 | value = n; | |
1440 | } | |
1441 | /* else stalls ... spec says to avoid that */ | |
1442 | } | |
1443 | break; | |
1444 | #endif /* RNDIS */ | |
1445 | ||
23cd1385 | 1446 | default: |
7de73185 | 1447 | debug("unknown control req%02x.%02x v%04x i%04x l%d\n", |
23cd1385 RB |
1448 | ctrl->bRequestType, ctrl->bRequest, |
1449 | wValue, wIndex, wLength); | |
1450 | } | |
1451 | ||
1452 | /* respond with data transfer before status phase? */ | |
1453 | if (value >= 0) { | |
7de73185 | 1454 | debug("respond with data transfer before status phase\n"); |
23cd1385 RB |
1455 | req->length = value; |
1456 | req->zero = value < wLength | |
1457 | && (value % gadget->ep0->maxpacket) == 0; | |
6142e0ae | 1458 | value = usb_ep_queue(gadget->ep0, req, GFP_ATOMIC); |
23cd1385 | 1459 | if (value < 0) { |
7de73185 | 1460 | debug("ep_queue --> %d\n", value); |
23cd1385 | 1461 | req->status = 0; |
6142e0ae | 1462 | eth_setup_complete(gadget->ep0, req); |
23cd1385 RB |
1463 | } |
1464 | } | |
1465 | ||
1466 | /* host either stalls (value < 0) or reports success */ | |
1467 | return value; | |
1468 | } | |
1469 | ||
23cd1385 RB |
1470 | /*-------------------------------------------------------------------------*/ |
1471 | ||
6142e0ae | 1472 | static void rx_complete(struct usb_ep *ep, struct usb_request *req); |
23cd1385 | 1473 | |
6142e0ae | 1474 | static int rx_submit(struct eth_dev *dev, struct usb_request *req, |
23cd1385 RB |
1475 | gfp_t gfp_flags) |
1476 | { | |
1477 | int retval = -ENOMEM; | |
1478 | size_t size; | |
1479 | ||
6142e0ae VK |
1480 | /* |
1481 | * Padding up to RX_EXTRA handles minor disagreements with host. | |
23cd1385 RB |
1482 | * Normally we use the USB "terminate on short read" convention; |
1483 | * so allow up to (N*maxpacket), since that memory is normally | |
1484 | * already allocated. Some hardware doesn't deal well with short | |
1485 | * reads (e.g. DMA must be N*maxpacket), so for now don't trim a | |
1486 | * byte off the end (to force hardware errors on overflow). | |
7612a43d VK |
1487 | * |
1488 | * RNDIS uses internal framing, and explicitly allows senders to | |
1489 | * pad to end-of-packet. That's potentially nice for speed, | |
1490 | * but means receivers can't recover synch on their own. | |
23cd1385 RB |
1491 | */ |
1492 | ||
7de73185 | 1493 | debug("%s\n", __func__); |
71fc5f91 TK |
1494 | if (!req) |
1495 | return -EINVAL; | |
23cd1385 RB |
1496 | |
1497 | size = (ETHER_HDR_SIZE + dev->mtu + RX_EXTRA); | |
1498 | size += dev->out_ep->maxpacket - 1; | |
7612a43d VK |
1499 | if (rndis_active(dev)) |
1500 | size += sizeof(struct rndis_packet_msg_type); | |
23cd1385 RB |
1501 | size -= size % dev->out_ep->maxpacket; |
1502 | ||
6142e0ae VK |
1503 | /* |
1504 | * Some platforms perform better when IP packets are aligned, | |
7612a43d VK |
1505 | * but on at least one, checksumming fails otherwise. Note: |
1506 | * RNDIS headers involve variable numbers of LE32 values. | |
23cd1385 RB |
1507 | */ |
1508 | ||
1fd92db8 | 1509 | req->buf = (u8 *)net_rx_packets[0]; |
23cd1385 RB |
1510 | req->length = size; |
1511 | req->complete = rx_complete; | |
1512 | ||
6142e0ae | 1513 | retval = usb_ep_queue(dev->out_ep, req, gfp_flags); |
23cd1385 | 1514 | |
6142e0ae | 1515 | if (retval) |
9b643e31 | 1516 | pr_err("rx submit --> %d", retval); |
6142e0ae | 1517 | |
23cd1385 RB |
1518 | return retval; |
1519 | } | |
1520 | ||
6142e0ae | 1521 | static void rx_complete(struct usb_ep *ep, struct usb_request *req) |
23cd1385 RB |
1522 | { |
1523 | struct eth_dev *dev = ep->driver_data; | |
1524 | ||
7de73185 | 1525 | debug("%s: status %d\n", __func__, req->status); |
c85d70ef VK |
1526 | switch (req->status) { |
1527 | /* normal completion */ | |
1528 | case 0: | |
7612a43d VK |
1529 | if (rndis_active(dev)) { |
1530 | /* we know MaxPacketsPerTransfer == 1 here */ | |
1531 | int length = rndis_rm_hdr(req->buf, req->actual); | |
1532 | if (length < 0) | |
1533 | goto length_err; | |
1534 | req->length -= length; | |
1535 | req->actual -= length; | |
1536 | } | |
dda52510 | 1537 | if (req->actual < ETH_HLEN || PKTSIZE_ALIGN < req->actual) { |
7612a43d VK |
1538 | length_err: |
1539 | dev->stats.rx_errors++; | |
1540 | dev->stats.rx_length_errors++; | |
1541 | debug("rx length %d\n", req->length); | |
1542 | break; | |
1543 | } | |
1544 | ||
c85d70ef VK |
1545 | dev->stats.rx_packets++; |
1546 | dev->stats.rx_bytes += req->length; | |
1547 | break; | |
1548 | ||
1549 | /* software-driven interface shutdown */ | |
1550 | case -ECONNRESET: /* unlink */ | |
1551 | case -ESHUTDOWN: /* disconnect etc */ | |
1552 | /* for hardware automagic (such as pxa) */ | |
1553 | case -ECONNABORTED: /* endpoint reset */ | |
1554 | break; | |
1555 | ||
1556 | /* data overrun */ | |
1557 | case -EOVERFLOW: | |
1558 | dev->stats.rx_over_errors++; | |
1559 | /* FALLTHROUGH */ | |
1560 | default: | |
1561 | dev->stats.rx_errors++; | |
1562 | break; | |
1563 | } | |
23cd1385 | 1564 | |
6142e0ae | 1565 | packet_received = 1; |
23cd1385 RB |
1566 | } |
1567 | ||
6142e0ae | 1568 | static int alloc_requests(struct eth_dev *dev, unsigned n, gfp_t gfp_flags) |
23cd1385 RB |
1569 | { |
1570 | ||
6142e0ae | 1571 | dev->tx_req = usb_ep_alloc_request(dev->in_ep, 0); |
23cd1385 RB |
1572 | |
1573 | if (!dev->tx_req) | |
ac5d32d1 | 1574 | goto fail1; |
23cd1385 | 1575 | |
6142e0ae | 1576 | dev->rx_req = usb_ep_alloc_request(dev->out_ep, 0); |
23cd1385 RB |
1577 | |
1578 | if (!dev->rx_req) | |
ac5d32d1 | 1579 | goto fail2; |
23cd1385 RB |
1580 | |
1581 | return 0; | |
1582 | ||
ac5d32d1 VK |
1583 | fail2: |
1584 | usb_ep_free_request(dev->in_ep, dev->tx_req); | |
1585 | fail1: | |
9b643e31 | 1586 | pr_err("can't alloc requests"); |
23cd1385 RB |
1587 | return -1; |
1588 | } | |
1589 | ||
6142e0ae | 1590 | static void tx_complete(struct usb_ep *ep, struct usb_request *req) |
23cd1385 | 1591 | { |
c85d70ef VK |
1592 | struct eth_dev *dev = ep->driver_data; |
1593 | ||
6142e0ae | 1594 | debug("%s: status %s\n", __func__, (req->status) ? "failed" : "ok"); |
c85d70ef VK |
1595 | switch (req->status) { |
1596 | default: | |
1597 | dev->stats.tx_errors++; | |
1598 | debug("tx err %d\n", req->status); | |
1599 | /* FALLTHROUGH */ | |
1600 | case -ECONNRESET: /* unlink */ | |
1601 | case -ESHUTDOWN: /* disconnect etc */ | |
1602 | break; | |
1603 | case 0: | |
1604 | dev->stats.tx_bytes += req->length; | |
1605 | } | |
1606 | dev->stats.tx_packets++; | |
1607 | ||
6142e0ae | 1608 | packet_sent = 1; |
23cd1385 RB |
1609 | } |
1610 | ||
6142e0ae | 1611 | static inline int eth_is_promisc(struct eth_dev *dev) |
23cd1385 RB |
1612 | { |
1613 | /* no filters for the CDC subset; always promisc */ | |
6142e0ae | 1614 | if (subset_active(dev)) |
23cd1385 RB |
1615 | return 1; |
1616 | return dev->cdc_filter & USB_CDC_PACKET_TYPE_PROMISCUOUS; | |
1617 | } | |
1618 | ||
1619 | #if 0 | |
1620 | static int eth_start_xmit (struct sk_buff *skb, struct net_device *net) | |
1621 | { | |
1622 | struct eth_dev *dev = netdev_priv(net); | |
1623 | int length = skb->len; | |
1624 | int retval; | |
1625 | struct usb_request *req = NULL; | |
1626 | unsigned long flags; | |
1627 | ||
1628 | /* apply outgoing CDC or RNDIS filters */ | |
1629 | if (!eth_is_promisc (dev)) { | |
1630 | u8 *dest = skb->data; | |
1631 | ||
0adb5b76 | 1632 | if (is_multicast_ethaddr(dest)) { |
23cd1385 RB |
1633 | u16 type; |
1634 | ||
1635 | /* ignores USB_CDC_PACKET_TYPE_MULTICAST and host | |
1636 | * SET_ETHERNET_MULTICAST_FILTERS requests | |
1637 | */ | |
0adb5b76 | 1638 | if (is_broadcast_ethaddr(dest)) |
23cd1385 RB |
1639 | type = USB_CDC_PACKET_TYPE_BROADCAST; |
1640 | else | |
1641 | type = USB_CDC_PACKET_TYPE_ALL_MULTICAST; | |
1642 | if (!(dev->cdc_filter & type)) { | |
1643 | dev_kfree_skb_any (skb); | |
1644 | return 0; | |
1645 | } | |
1646 | } | |
1647 | /* ignores USB_CDC_PACKET_TYPE_DIRECTED */ | |
1648 | } | |
1649 | ||
1650 | spin_lock_irqsave(&dev->req_lock, flags); | |
1651 | /* | |
1652 | * this freelist can be empty if an interrupt triggered disconnect() | |
1653 | * and reconfigured the gadget (shutting down this queue) after the | |
1654 | * network stack decided to xmit but before we got the spinlock. | |
1655 | */ | |
1656 | if (list_empty(&dev->tx_reqs)) { | |
1657 | spin_unlock_irqrestore(&dev->req_lock, flags); | |
1658 | return 1; | |
1659 | } | |
1660 | ||
1661 | req = container_of (dev->tx_reqs.next, struct usb_request, list); | |
1662 | list_del (&req->list); | |
1663 | ||
1664 | /* temporarily stop TX queue when the freelist empties */ | |
1665 | if (list_empty (&dev->tx_reqs)) | |
1666 | netif_stop_queue (net); | |
1667 | spin_unlock_irqrestore(&dev->req_lock, flags); | |
1668 | ||
1669 | /* no buffer copies needed, unless the network stack did it | |
1670 | * or the hardware can't use skb buffers. | |
1671 | * or there's not enough space for any RNDIS headers we need | |
1672 | */ | |
1673 | if (rndis_active(dev)) { | |
1674 | struct sk_buff *skb_rndis; | |
1675 | ||
1676 | skb_rndis = skb_realloc_headroom (skb, | |
1677 | sizeof (struct rndis_packet_msg_type)); | |
1678 | if (!skb_rndis) | |
1679 | goto drop; | |
1680 | ||
1681 | dev_kfree_skb_any (skb); | |
1682 | skb = skb_rndis; | |
1683 | rndis_add_hdr (skb); | |
1684 | length = skb->len; | |
1685 | } | |
1686 | req->buf = skb->data; | |
1687 | req->context = skb; | |
1688 | req->complete = tx_complete; | |
1689 | ||
1690 | /* use zlp framing on tx for strict CDC-Ether conformance, | |
1691 | * though any robust network rx path ignores extra padding. | |
1692 | * and some hardware doesn't like to write zlps. | |
1693 | */ | |
1694 | req->zero = 1; | |
1695 | if (!dev->zlp && (length % dev->in_ep->maxpacket) == 0) | |
1696 | length++; | |
1697 | ||
1698 | req->length = length; | |
1699 | ||
1700 | /* throttle highspeed IRQ rate back slightly */ | |
1701 | if (gadget_is_dualspeed(dev->gadget)) | |
1702 | req->no_interrupt = (dev->gadget->speed == USB_SPEED_HIGH) | |
1703 | ? ((atomic_read(&dev->tx_qlen) % qmult) != 0) | |
1704 | : 0; | |
1705 | ||
1706 | retval = usb_ep_queue (dev->in_ep, req, GFP_ATOMIC); | |
1707 | switch (retval) { | |
1708 | default: | |
1709 | DEBUG (dev, "tx queue err %d\n", retval); | |
1710 | break; | |
1711 | case 0: | |
1712 | net->trans_start = jiffies; | |
1713 | atomic_inc (&dev->tx_qlen); | |
1714 | } | |
1715 | ||
1716 | if (retval) { | |
1717 | drop: | |
1718 | dev->stats.tx_dropped++; | |
1719 | dev_kfree_skb_any (skb); | |
1720 | spin_lock_irqsave(&dev->req_lock, flags); | |
1721 | if (list_empty (&dev->tx_reqs)) | |
1722 | netif_start_queue (net); | |
1723 | list_add (&req->list, &dev->tx_reqs); | |
1724 | spin_unlock_irqrestore(&dev->req_lock, flags); | |
1725 | } | |
1726 | return 0; | |
1727 | } | |
1728 | ||
1729 | /*-------------------------------------------------------------------------*/ | |
1730 | #endif | |
1731 | ||
6142e0ae | 1732 | static void eth_unbind(struct usb_gadget *gadget) |
23cd1385 | 1733 | { |
7612a43d | 1734 | struct eth_dev *dev = get_gadget_data(gadget); |
23cd1385 | 1735 | |
7de73185 | 1736 | debug("%s...\n", __func__); |
7612a43d VK |
1737 | rndis_deregister(dev->rndis_config); |
1738 | rndis_exit(); | |
23cd1385 | 1739 | |
0129e327 VK |
1740 | /* we've already been disconnected ... no i/o is active */ |
1741 | if (dev->req) { | |
6142e0ae | 1742 | usb_ep_free_request(gadget->ep0, dev->req); |
0129e327 VK |
1743 | dev->req = NULL; |
1744 | } | |
23cd1385 | 1745 | if (dev->stat_req) { |
6142e0ae | 1746 | usb_ep_free_request(dev->status_ep, dev->stat_req); |
23cd1385 RB |
1747 | dev->stat_req = NULL; |
1748 | } | |
1749 | ||
1750 | if (dev->tx_req) { | |
6142e0ae VK |
1751 | usb_ep_free_request(dev->in_ep, dev->tx_req); |
1752 | dev->tx_req = NULL; | |
23cd1385 RB |
1753 | } |
1754 | ||
1755 | if (dev->rx_req) { | |
6142e0ae VK |
1756 | usb_ep_free_request(dev->out_ep, dev->rx_req); |
1757 | dev->rx_req = NULL; | |
23cd1385 RB |
1758 | } |
1759 | ||
1760 | /* unregister_netdev (dev->net);*/ | |
1761 | /* free_netdev(dev->net);*/ | |
1762 | ||
988ee3e3 | 1763 | dev->gadget = NULL; |
6142e0ae | 1764 | set_gadget_data(gadget, NULL); |
23cd1385 RB |
1765 | } |
1766 | ||
6142e0ae | 1767 | static void eth_disconnect(struct usb_gadget *gadget) |
23cd1385 | 1768 | { |
6142e0ae | 1769 | eth_reset_config(get_gadget_data(gadget)); |
7612a43d | 1770 | /* FIXME RNDIS should enter RNDIS_UNINITIALIZED */ |
23cd1385 RB |
1771 | } |
1772 | ||
6142e0ae | 1773 | static void eth_suspend(struct usb_gadget *gadget) |
23cd1385 RB |
1774 | { |
1775 | /* Not used */ | |
1776 | } | |
1777 | ||
6142e0ae | 1778 | static void eth_resume(struct usb_gadget *gadget) |
23cd1385 RB |
1779 | { |
1780 | /* Not used */ | |
1781 | } | |
1782 | ||
1783 | /*-------------------------------------------------------------------------*/ | |
1784 | ||
7612a43d VK |
1785 | #ifdef CONFIG_USB_ETH_RNDIS |
1786 | ||
1787 | /* | |
1788 | * The interrupt endpoint is used in RNDIS to notify the host when messages | |
1789 | * other than data packets are available ... notably the REMOTE_NDIS_*_CMPLT | |
1790 | * messages, but also REMOTE_NDIS_INDICATE_STATUS_MSG and potentially even | |
1791 | * REMOTE_NDIS_KEEPALIVE_MSG. | |
1792 | * | |
1793 | * The RNDIS control queue is processed by GET_ENCAPSULATED_RESPONSE, and | |
1794 | * normally just one notification will be queued. | |
1795 | */ | |
1796 | ||
1797 | static void rndis_control_ack_complete(struct usb_ep *ep, | |
1798 | struct usb_request *req) | |
1799 | { | |
1800 | struct eth_dev *dev = ep->driver_data; | |
1801 | ||
1802 | debug("%s...\n", __func__); | |
1803 | if (req->status || req->actual != req->length) | |
1804 | debug("rndis control ack complete --> %d, %d/%d\n", | |
1805 | req->status, req->actual, req->length); | |
1806 | ||
17b4f308 | 1807 | if (!dev->network_started) { |
7612a43d VK |
1808 | if (rndis_get_state(dev->rndis_config) |
1809 | == RNDIS_DATA_INITIALIZED) { | |
17b4f308 | 1810 | dev->network_started = 1; |
7612a43d VK |
1811 | printf("USB RNDIS network up!\n"); |
1812 | } | |
1813 | } | |
1814 | ||
1815 | req->context = NULL; | |
1816 | ||
1817 | if (req != dev->stat_req) | |
1818 | usb_ep_free_request(ep, req); | |
1819 | } | |
1820 | ||
1821 | static char rndis_resp_buf[8] __attribute__((aligned(sizeof(__le32)))); | |
1822 | ||
d4a37553 | 1823 | static int rndis_control_ack(struct udevice *net) |
7612a43d | 1824 | { |
0fd3d911 SG |
1825 | struct ether_priv *priv; |
1826 | struct eth_dev *dev; | |
1827 | int length; | |
1828 | struct usb_request *resp; | |
1829 | ||
0fd3d911 | 1830 | priv = dev_get_priv(net); |
0fd3d911 SG |
1831 | dev = &priv->ethdev; |
1832 | resp = dev->stat_req; | |
7612a43d VK |
1833 | |
1834 | /* in case RNDIS calls this after disconnect */ | |
1835 | if (!dev->status) { | |
1836 | debug("status ENODEV\n"); | |
1837 | return -ENODEV; | |
1838 | } | |
1839 | ||
1840 | /* in case queue length > 1 */ | |
1841 | if (resp->context) { | |
1842 | resp = usb_ep_alloc_request(dev->status_ep, GFP_ATOMIC); | |
1843 | if (!resp) | |
1844 | return -ENOMEM; | |
1845 | resp->buf = rndis_resp_buf; | |
1846 | } | |
1847 | ||
1848 | /* | |
1849 | * Send RNDIS RESPONSE_AVAILABLE notification; | |
1850 | * USB_CDC_NOTIFY_RESPONSE_AVAILABLE should work too | |
1851 | */ | |
1852 | resp->length = 8; | |
1853 | resp->complete = rndis_control_ack_complete; | |
1854 | resp->context = dev; | |
1855 | ||
1856 | *((__le32 *) resp->buf) = __constant_cpu_to_le32(1); | |
1857 | *((__le32 *) (resp->buf + 4)) = __constant_cpu_to_le32(0); | |
1858 | ||
1859 | length = usb_ep_queue(dev->status_ep, resp, GFP_ATOMIC); | |
1860 | if (length < 0) { | |
1861 | resp->status = 0; | |
1862 | rndis_control_ack_complete(dev->status_ep, resp); | |
1863 | } | |
1864 | ||
1865 | return 0; | |
1866 | } | |
1867 | ||
1868 | #else | |
1869 | ||
1870 | #define rndis_control_ack NULL | |
1871 | ||
1872 | #endif /* RNDIS */ | |
1873 | ||
1874 | static void eth_start(struct eth_dev *dev, gfp_t gfp_flags) | |
1875 | { | |
1876 | if (rndis_active(dev)) { | |
1877 | rndis_set_param_medium(dev->rndis_config, | |
1878 | NDIS_MEDIUM_802_3, | |
1879 | BITRATE(dev->gadget)/100); | |
1880 | rndis_signal_connect(dev->rndis_config); | |
1881 | } | |
1882 | } | |
1883 | ||
bfa352d1 | 1884 | static int eth_stop(struct udevice *udev) |
7612a43d | 1885 | { |
bfa352d1 MV |
1886 | struct ether_priv *priv = dev_get_priv(udev); |
1887 | struct eth_dev *dev = &priv->ethdev; | |
e4ae6660 VK |
1888 | #ifdef RNDIS_COMPLETE_SIGNAL_DISCONNECT |
1889 | unsigned long ts; | |
1890 | unsigned long timeout = CONFIG_SYS_HZ; /* 1 sec to stop RNDIS */ | |
1891 | #endif | |
1892 | ||
7612a43d VK |
1893 | if (rndis_active(dev)) { |
1894 | rndis_set_param_medium(dev->rndis_config, NDIS_MEDIUM_802_3, 0); | |
1895 | rndis_signal_disconnect(dev->rndis_config); | |
1896 | ||
e4ae6660 VK |
1897 | #ifdef RNDIS_COMPLETE_SIGNAL_DISCONNECT |
1898 | /* Wait until host receives OID_GEN_MEDIA_CONNECT_STATUS */ | |
1899 | ts = get_timer(0); | |
1900 | while (get_timer(ts) < timeout) | |
bfa352d1 | 1901 | dm_usb_gadget_handle_interrupts(udev->parent); |
e4ae6660 VK |
1902 | #endif |
1903 | ||
7612a43d VK |
1904 | rndis_uninit(dev->rndis_config); |
1905 | dev->rndis = 0; | |
1906 | } | |
1907 | ||
1908 | return 0; | |
1909 | } | |
1910 | ||
1911 | /*-------------------------------------------------------------------------*/ | |
1912 | ||
23cd1385 RB |
1913 | static int is_eth_addr_valid(char *str) |
1914 | { | |
1915 | if (strlen(str) == 17) { | |
1916 | int i; | |
1917 | char *p, *q; | |
1918 | uchar ea[6]; | |
1919 | ||
1920 | /* see if it looks like an ethernet address */ | |
1921 | ||
1922 | p = str; | |
1923 | ||
1924 | for (i = 0; i < 6; i++) { | |
1925 | char term = (i == 5 ? '\0' : ':'); | |
1926 | ||
1927 | ea[i] = simple_strtol(p, &q, 16); | |
1928 | ||
1929 | if ((q - p) != 2 || *q++ != term) | |
1930 | break; | |
1931 | ||
1932 | p = q; | |
1933 | } | |
1934 | ||
57a87a25 | 1935 | /* Now check the contents. */ |
0adb5b76 | 1936 | return is_valid_ethaddr(ea); |
23cd1385 RB |
1937 | } |
1938 | return 0; | |
1939 | } | |
1940 | ||
6142e0ae | 1941 | static u8 nibble(unsigned char c) |
23cd1385 | 1942 | { |
6142e0ae | 1943 | if (likely(isdigit(c))) |
23cd1385 | 1944 | return c - '0'; |
6142e0ae VK |
1945 | c = toupper(c); |
1946 | if (likely(isxdigit(c))) | |
23cd1385 RB |
1947 | return 10 + c - 'A'; |
1948 | return 0; | |
1949 | } | |
1950 | ||
1951 | static int get_ether_addr(const char *str, u8 *dev_addr) | |
1952 | { | |
1953 | if (str) { | |
1954 | unsigned i; | |
1955 | ||
1956 | for (i = 0; i < 6; i++) { | |
1957 | unsigned char num; | |
1958 | ||
6142e0ae | 1959 | if ((*str == '.') || (*str == ':')) |
23cd1385 RB |
1960 | str++; |
1961 | num = nibble(*str++) << 4; | |
1962 | num |= (nibble(*str++)); | |
6142e0ae | 1963 | dev_addr[i] = num; |
23cd1385 | 1964 | } |
0adb5b76 | 1965 | if (is_valid_ethaddr(dev_addr)) |
23cd1385 RB |
1966 | return 0; |
1967 | } | |
1968 | return 1; | |
1969 | } | |
1970 | ||
1971 | static int eth_bind(struct usb_gadget *gadget) | |
1972 | { | |
5cb3b9d7 | 1973 | struct eth_dev *dev = &l_priv->ethdev; |
7612a43d | 1974 | u8 cdc = 1, zlp = 1, rndis = 1; |
23cd1385 | 1975 | struct usb_ep *in_ep, *out_ep, *status_ep = NULL; |
7612a43d | 1976 | int status = -ENOMEM; |
23cd1385 | 1977 | int gcnum; |
6142e0ae | 1978 | u8 tmp[7]; |
c69cda25 | 1979 | struct eth_pdata *pdata = dev_get_plat(l_priv->netdev); |
23cd1385 RB |
1980 | |
1981 | /* these flags are only ever cleared; compiler take note */ | |
2bb37884 | 1982 | #ifndef CONFIG_USB_ETH_CDC |
23cd1385 | 1983 | cdc = 0; |
7612a43d VK |
1984 | #endif |
1985 | #ifndef CONFIG_USB_ETH_RNDIS | |
1986 | rndis = 0; | |
23cd1385 | 1987 | #endif |
6142e0ae VK |
1988 | /* |
1989 | * Because most host side USB stacks handle CDC Ethernet, that | |
23cd1385 RB |
1990 | * standard protocol is _strongly_ preferred for interop purposes. |
1991 | * (By everyone except Microsoft.) | |
1992 | */ | |
a457ebd7 | 1993 | if (gadget_is_musbhdrc(gadget)) { |
23cd1385 RB |
1994 | /* reduce tx dma overhead by avoiding special cases */ |
1995 | zlp = 0; | |
1996 | } else if (gadget_is_sh(gadget)) { | |
1997 | /* sh doesn't support multiple interfaces or configs */ | |
1998 | cdc = 0; | |
7612a43d | 1999 | rndis = 0; |
23cd1385 RB |
2000 | } |
2001 | ||
6142e0ae | 2002 | gcnum = usb_gadget_controller_number(gadget); |
23cd1385 | 2003 | if (gcnum >= 0) |
6142e0ae | 2004 | device_desc.bcdDevice = cpu_to_le16(0x0300 + gcnum); |
23cd1385 | 2005 | else { |
6142e0ae VK |
2006 | /* |
2007 | * can't assume CDC works. don't want to default to | |
23cd1385 RB |
2008 | * anything less functional on CDC-capable hardware, |
2009 | * so we fail in this case. | |
2010 | */ | |
9b643e31 | 2011 | pr_err("controller '%s' not recognized", |
23cd1385 RB |
2012 | gadget->name); |
2013 | return -ENODEV; | |
2014 | } | |
2015 | ||
6142e0ae | 2016 | /* |
7612a43d VK |
2017 | * If there's an RNDIS configuration, that's what Windows wants to |
2018 | * be using ... so use these product IDs here and in the "linux.inf" | |
2019 | * needed to install MSFT drivers. Current Linux kernels will use | |
2020 | * the second configuration if it's CDC Ethernet, and need some help | |
2021 | * to choose the right configuration otherwise. | |
23cd1385 | 2022 | */ |
7612a43d | 2023 | if (rndis) { |
10ac57fd | 2024 | #if defined(CONFIG_USB_GADGET_VENDOR_NUM) && defined(CONFIG_USB_GADGET_PRODUCT_NUM) |
23cd1385 | 2025 | device_desc.idVendor = |
10ac57fd | 2026 | __constant_cpu_to_le16(CONFIG_USB_GADGET_VENDOR_NUM); |
23cd1385 | 2027 | device_desc.idProduct = |
10ac57fd | 2028 | __constant_cpu_to_le16(CONFIG_USB_GADGET_PRODUCT_NUM); |
7612a43d VK |
2029 | #else |
2030 | device_desc.idVendor = | |
2031 | __constant_cpu_to_le16(RNDIS_VENDOR_NUM); | |
2032 | device_desc.idProduct = | |
2033 | __constant_cpu_to_le16(RNDIS_PRODUCT_NUM); | |
2034 | #endif | |
2035 | sprintf(product_desc, "RNDIS/%s", driver_desc); | |
23cd1385 | 2036 | |
7612a43d VK |
2037 | /* |
2038 | * CDC subset ... recognized by Linux since 2.4.10, but Windows | |
2039 | * drivers aren't widely available. (That may be improved by | |
2040 | * supporting one submode of the "SAFE" variant of MDLM.) | |
2041 | */ | |
2042 | } else { | |
10ac57fd MR |
2043 | #if defined(CONFIG_USB_GADGET_VENDOR_NUM) && defined(CONFIG_USB_GADGET_PRODUCT_NUM) |
2044 | device_desc.idVendor = cpu_to_le16(CONFIG_USB_GADGET_VENDOR_NUM); | |
2045 | device_desc.idProduct = cpu_to_le16(CONFIG_USB_GADGET_PRODUCT_NUM); | |
7612a43d VK |
2046 | #else |
2047 | if (!cdc) { | |
2048 | device_desc.idVendor = | |
2049 | __constant_cpu_to_le16(SIMPLE_VENDOR_NUM); | |
2050 | device_desc.idProduct = | |
2051 | __constant_cpu_to_le16(SIMPLE_PRODUCT_NUM); | |
2052 | } | |
23cd1385 | 2053 | #endif |
7612a43d VK |
2054 | } |
2055 | /* support optional vendor/distro customization */ | |
23cd1385 RB |
2056 | if (bcdDevice) |
2057 | device_desc.bcdDevice = cpu_to_le16(bcdDevice); | |
2058 | if (iManufacturer) | |
6142e0ae | 2059 | strlcpy(manufacturer, iManufacturer, sizeof manufacturer); |
23cd1385 | 2060 | if (iProduct) |
6142e0ae | 2061 | strlcpy(product_desc, iProduct, sizeof product_desc); |
23cd1385 RB |
2062 | if (iSerialNumber) { |
2063 | device_desc.iSerialNumber = STRING_SERIALNUMBER, | |
2e12abe6 | 2064 | strlcpy(serial_number, iSerialNumber, sizeof serial_number); |
23cd1385 RB |
2065 | } |
2066 | ||
2067 | /* all we really need is bulk IN/OUT */ | |
6142e0ae VK |
2068 | usb_ep_autoconfig_reset(gadget); |
2069 | in_ep = usb_ep_autoconfig(gadget, &fs_source_desc); | |
23cd1385 RB |
2070 | if (!in_ep) { |
2071 | autoconf_fail: | |
9b643e31 | 2072 | pr_err("can't autoconfigure on %s\n", |
23cd1385 RB |
2073 | gadget->name); |
2074 | return -ENODEV; | |
2075 | } | |
2076 | in_ep->driver_data = in_ep; /* claim */ | |
2077 | ||
6142e0ae | 2078 | out_ep = usb_ep_autoconfig(gadget, &fs_sink_desc); |
23cd1385 RB |
2079 | if (!out_ep) |
2080 | goto autoconf_fail; | |
2081 | out_ep->driver_data = out_ep; /* claim */ | |
2082 | ||
2bb37884 | 2083 | #if defined(CONFIG_USB_ETH_CDC) || defined(CONFIG_USB_ETH_RNDIS) |
6142e0ae VK |
2084 | /* |
2085 | * CDC Ethernet control interface doesn't require a status endpoint. | |
23cd1385 RB |
2086 | * Since some hosts expect one, try to allocate one anyway. |
2087 | */ | |
7612a43d | 2088 | if (cdc || rndis) { |
6142e0ae | 2089 | status_ep = usb_ep_autoconfig(gadget, &fs_status_desc); |
23cd1385 RB |
2090 | if (status_ep) { |
2091 | status_ep->driver_data = status_ep; /* claim */ | |
7612a43d | 2092 | } else if (rndis) { |
9b643e31 | 2093 | pr_err("can't run RNDIS on %s", gadget->name); |
7612a43d | 2094 | return -ENODEV; |
2bb37884 | 2095 | #ifdef CONFIG_USB_ETH_CDC |
23cd1385 RB |
2096 | } else if (cdc) { |
2097 | control_intf.bNumEndpoints = 0; | |
2098 | /* FIXME remove endpoint from descriptor list */ | |
7612a43d | 2099 | #endif |
23cd1385 RB |
2100 | } |
2101 | } | |
2102 | #endif | |
2103 | ||
2104 | /* one config: cdc, else minimal subset */ | |
2105 | if (!cdc) { | |
2106 | eth_config.bNumInterfaces = 1; | |
2107 | eth_config.iConfiguration = STRING_SUBSET; | |
2108 | ||
6142e0ae VK |
2109 | /* |
2110 | * use functions to set these up, in case we're built to work | |
23cd1385 RB |
2111 | * with multiple controllers and must override CDC Ethernet. |
2112 | */ | |
2113 | fs_subset_descriptors(); | |
2114 | hs_subset_descriptors(); | |
2115 | } | |
2116 | ||
6142e0ae | 2117 | usb_gadget_set_selfpowered(gadget); |
23cd1385 | 2118 | |
7612a43d VK |
2119 | /* For now RNDIS is always a second config */ |
2120 | if (rndis) | |
2121 | device_desc.bNumConfigurations = 2; | |
2122 | ||
23cd1385 | 2123 | if (gadget_is_dualspeed(gadget)) { |
7612a43d VK |
2124 | if (rndis) |
2125 | dev_qualifier.bNumConfigurations = 2; | |
2126 | else if (!cdc) | |
23cd1385 RB |
2127 | dev_qualifier.bDeviceClass = USB_CLASS_VENDOR_SPEC; |
2128 | ||
2129 | /* assumes ep0 uses the same value for both speeds ... */ | |
2130 | dev_qualifier.bMaxPacketSize0 = device_desc.bMaxPacketSize0; | |
2131 | ||
2132 | /* and that all endpoints are dual-speed */ | |
2133 | hs_source_desc.bEndpointAddress = | |
2134 | fs_source_desc.bEndpointAddress; | |
2135 | hs_sink_desc.bEndpointAddress = | |
2136 | fs_sink_desc.bEndpointAddress; | |
2bb37884 | 2137 | #if defined(CONFIG_USB_ETH_CDC) || defined(CONFIG_USB_ETH_RNDIS) |
23cd1385 RB |
2138 | if (status_ep) |
2139 | hs_status_desc.bEndpointAddress = | |
2140 | fs_status_desc.bEndpointAddress; | |
2141 | #endif | |
2142 | } | |
2143 | ||
2144 | if (gadget_is_otg(gadget)) { | |
2145 | otg_descriptor.bmAttributes |= USB_OTG_HNP, | |
2146 | eth_config.bmAttributes |= USB_CONFIG_ATT_WAKEUP; | |
2147 | eth_config.bMaxPower = 4; | |
7612a43d VK |
2148 | #ifdef CONFIG_USB_ETH_RNDIS |
2149 | rndis_config.bmAttributes |= USB_CONFIG_ATT_WAKEUP; | |
2150 | rndis_config.bMaxPower = 4; | |
2151 | #endif | |
23cd1385 RB |
2152 | } |
2153 | ||
7612a43d VK |
2154 | |
2155 | /* network device setup */ | |
d4a37553 | 2156 | dev->net = l_priv->netdev; |
23cd1385 RB |
2157 | |
2158 | dev->cdc = cdc; | |
2159 | dev->zlp = zlp; | |
2160 | ||
2161 | dev->in_ep = in_ep; | |
2162 | dev->out_ep = out_ep; | |
2163 | dev->status_ep = status_ep; | |
2164 | ||
d4a37553 | 2165 | memset(tmp, 0, sizeof(tmp)); |
6142e0ae VK |
2166 | /* |
2167 | * Module params for these addresses should come from ID proms. | |
7612a43d | 2168 | * The host side address is used with CDC and RNDIS, and commonly |
23cd1385 RB |
2169 | * ends up in a persistent config database. It's not clear if |
2170 | * host side code for the SAFE thing cares -- its original BLAN | |
2171 | * thing didn't, Sharp never assigned those addresses on Zaurii. | |
2172 | */ | |
d4a37553 M |
2173 | get_ether_addr(dev_addr, pdata->enetaddr); |
2174 | memcpy(tmp, pdata->enetaddr, sizeof(pdata->enetaddr)); | |
23cd1385 RB |
2175 | |
2176 | get_ether_addr(host_addr, dev->host_mac); | |
2177 | ||
6142e0ae VK |
2178 | sprintf(ethaddr, "%02X%02X%02X%02X%02X%02X", |
2179 | dev->host_mac[0], dev->host_mac[1], | |
2180 | dev->host_mac[2], dev->host_mac[3], | |
2181 | dev->host_mac[4], dev->host_mac[5]); | |
23cd1385 | 2182 | |
7612a43d VK |
2183 | if (rndis) { |
2184 | status = rndis_init(); | |
2185 | if (status < 0) { | |
9b643e31 | 2186 | pr_err("can't init RNDIS, %d", status); |
7612a43d VK |
2187 | goto fail; |
2188 | } | |
23cd1385 RB |
2189 | } |
2190 | ||
6142e0ae VK |
2191 | /* |
2192 | * use PKTSIZE (or aligned... from u-boot) and set | |
2193 | * wMaxSegmentSize accordingly | |
2194 | */ | |
23cd1385 RB |
2195 | dev->mtu = PKTSIZE_ALIGN; /* RNDIS does not like this, only 1514, TODO*/ |
2196 | ||
2197 | /* preallocate control message data and buffer */ | |
6142e0ae | 2198 | dev->req = usb_ep_alloc_request(gadget->ep0, GFP_KERNEL); |
23cd1385 RB |
2199 | if (!dev->req) |
2200 | goto fail; | |
2201 | dev->req->buf = control_req; | |
2202 | dev->req->complete = eth_setup_complete; | |
2203 | ||
2204 | /* ... and maybe likewise for status transfer */ | |
2bb37884 | 2205 | #if defined(CONFIG_USB_ETH_CDC) || defined(CONFIG_USB_ETH_RNDIS) |
23cd1385 | 2206 | if (dev->status_ep) { |
6142e0ae VK |
2207 | dev->stat_req = usb_ep_alloc_request(dev->status_ep, |
2208 | GFP_KERNEL); | |
23cd1385 | 2209 | if (!dev->stat_req) { |
6142e0ae | 2210 | usb_ep_free_request(dev->status_ep, dev->req); |
23cd1385 RB |
2211 | |
2212 | goto fail; | |
2213 | } | |
df559c1d | 2214 | dev->stat_req->buf = status_req; |
23cd1385 RB |
2215 | dev->stat_req->context = NULL; |
2216 | } | |
2217 | #endif | |
2218 | ||
2219 | /* finish hookup to lower layer ... */ | |
2220 | dev->gadget = gadget; | |
6142e0ae | 2221 | set_gadget_data(gadget, dev); |
23cd1385 RB |
2222 | gadget->ep0->driver_data = dev; |
2223 | ||
6142e0ae VK |
2224 | /* |
2225 | * two kinds of host-initiated state changes: | |
23cd1385 RB |
2226 | * - iff DATA transfer is active, carrier is "on" |
2227 | * - tx queueing enabled if open *and* carrier is "on" | |
2228 | */ | |
7612a43d VK |
2229 | |
2230 | printf("using %s, OUT %s IN %s%s%s\n", gadget->name, | |
2231 | out_ep->name, in_ep->name, | |
2232 | status_ep ? " STATUS " : "", | |
2233 | status_ep ? status_ep->name : "" | |
2234 | ); | |
d4a37553 | 2235 | printf("MAC %pM\n", pdata->enetaddr); |
7612a43d VK |
2236 | |
2237 | if (cdc || rndis) | |
2238 | printf("HOST MAC %02x:%02x:%02x:%02x:%02x:%02x\n", | |
2239 | dev->host_mac[0], dev->host_mac[1], | |
2240 | dev->host_mac[2], dev->host_mac[3], | |
2241 | dev->host_mac[4], dev->host_mac[5]); | |
2242 | ||
2243 | if (rndis) { | |
2244 | u32 vendorID = 0; | |
2245 | ||
2246 | /* FIXME RNDIS vendor id == "vendor NIC code" == ? */ | |
2247 | ||
2248 | dev->rndis_config = rndis_register(rndis_control_ack); | |
2249 | if (dev->rndis_config < 0) { | |
2250 | fail0: | |
2251 | eth_unbind(gadget); | |
2252 | debug("RNDIS setup failed\n"); | |
2253 | status = -ENODEV; | |
2254 | goto fail; | |
2255 | } | |
2256 | ||
2257 | /* these set up a lot of the OIDs that RNDIS needs */ | |
2258 | rndis_set_host_mac(dev->rndis_config, dev->host_mac); | |
2259 | if (rndis_set_param_dev(dev->rndis_config, dev->net, dev->mtu, | |
2260 | &dev->stats, &dev->cdc_filter)) | |
2261 | goto fail0; | |
2262 | if (rndis_set_param_vendor(dev->rndis_config, vendorID, | |
2263 | manufacturer)) | |
2264 | goto fail0; | |
2265 | if (rndis_set_param_medium(dev->rndis_config, | |
2266 | NDIS_MEDIUM_802_3, 0)) | |
2267 | goto fail0; | |
2268 | printf("RNDIS ready\n"); | |
2269 | } | |
23cd1385 RB |
2270 | return 0; |
2271 | ||
2272 | fail: | |
9b643e31 | 2273 | pr_err("%s failed, status = %d", __func__, status); |
6142e0ae | 2274 | eth_unbind(gadget); |
7612a43d | 2275 | return status; |
23cd1385 RB |
2276 | } |
2277 | ||
7612a43d | 2278 | /*-------------------------------------------------------------------------*/ |
da768f9c | 2279 | static void usb_eth_stop(struct udevice *dev); |
1c1464c2 | 2280 | |
da768f9c | 2281 | static int usb_eth_start(struct udevice *udev) |
23cd1385 | 2282 | { |
da768f9c | 2283 | struct ether_priv *priv = dev_get_priv(udev); |
ae70100c | 2284 | struct eth_dev *dev = &priv->ethdev; |
23cd1385 RB |
2285 | struct usb_gadget *gadget; |
2286 | unsigned long ts; | |
2287 | unsigned long timeout = USB_CONNECT_TIMEOUT; | |
2288 | ||
23cd1385 | 2289 | dev->network_started = 0; |
23cd1385 RB |
2290 | |
2291 | packet_received = 0; | |
2292 | packet_sent = 0; | |
2293 | ||
2294 | gadget = dev->gadget; | |
2295 | usb_gadget_connect(gadget); | |
2296 | ||
00caae6d | 2297 | if (env_get("cdc_connect_timeout")) |
0b1284eb | 2298 | timeout = dectoul(env_get("cdc_connect_timeout"), NULL) * CONFIG_SYS_HZ; |
23cd1385 | 2299 | ts = get_timer(0); |
17b4f308 | 2300 | while (!dev->network_started) { |
23cd1385 RB |
2301 | /* Handle control-c and timeouts */ |
2302 | if (ctrlc() || (get_timer(ts) > timeout)) { | |
9b643e31 | 2303 | pr_err("The remote end did not respond in time."); |
23cd1385 RB |
2304 | goto fail; |
2305 | } | |
bfa352d1 | 2306 | dm_usb_gadget_handle_interrupts(udev->parent); |
23cd1385 RB |
2307 | } |
2308 | ||
98fae970 | 2309 | packet_received = 0; |
6142e0ae | 2310 | rx_submit(dev, dev->rx_req, 0); |
23cd1385 RB |
2311 | return 0; |
2312 | fail: | |
da768f9c | 2313 | usb_eth_stop(udev); |
23cd1385 RB |
2314 | return -1; |
2315 | } | |
2316 | ||
da768f9c | 2317 | static int usb_eth_send(struct udevice *udev, void *packet, int length) |
23cd1385 | 2318 | { |
da768f9c | 2319 | struct ether_priv *priv = dev_get_priv(udev); |
23cd1385 | 2320 | int retval; |
7612a43d | 2321 | void *rndis_pkt = NULL; |
ae70100c | 2322 | struct eth_dev *dev = &priv->ethdev; |
ac5d32d1 | 2323 | struct usb_request *req = dev->tx_req; |
6142e0ae VK |
2324 | unsigned long ts; |
2325 | unsigned long timeout = USB_CONNECT_TIMEOUT; | |
23cd1385 | 2326 | |
7de73185 | 2327 | debug("%s:...\n", __func__); |
23cd1385 | 2328 | |
7612a43d VK |
2329 | /* new buffer is needed to include RNDIS header */ |
2330 | if (rndis_active(dev)) { | |
2331 | rndis_pkt = malloc(length + | |
2332 | sizeof(struct rndis_packet_msg_type)); | |
2333 | if (!rndis_pkt) { | |
9b643e31 | 2334 | pr_err("No memory to alloc RNDIS packet"); |
7612a43d VK |
2335 | goto drop; |
2336 | } | |
2337 | rndis_add_hdr(rndis_pkt, length); | |
2338 | memcpy(rndis_pkt + sizeof(struct rndis_packet_msg_type), | |
10cbe3b6 | 2339 | packet, length); |
7612a43d VK |
2340 | packet = rndis_pkt; |
2341 | length += sizeof(struct rndis_packet_msg_type); | |
2342 | } | |
10cbe3b6 | 2343 | req->buf = packet; |
23cd1385 RB |
2344 | req->context = NULL; |
2345 | req->complete = tx_complete; | |
2346 | ||
6142e0ae VK |
2347 | /* |
2348 | * use zlp framing on tx for strict CDC-Ether conformance, | |
23cd1385 RB |
2349 | * though any robust network rx path ignores extra padding. |
2350 | * and some hardware doesn't like to write zlps. | |
2351 | */ | |
2352 | req->zero = 1; | |
2353 | if (!dev->zlp && (length % dev->in_ep->maxpacket) == 0) | |
2354 | length++; | |
2355 | ||
2356 | req->length = length; | |
2357 | #if 0 | |
2358 | /* throttle highspeed IRQ rate back slightly */ | |
2359 | if (gadget_is_dualspeed(dev->gadget)) | |
2360 | req->no_interrupt = (dev->gadget->speed == USB_SPEED_HIGH) | |
2361 | ? ((dev->tx_qlen % qmult) != 0) : 0; | |
2362 | #endif | |
6142e0ae VK |
2363 | dev->tx_qlen = 1; |
2364 | ts = get_timer(0); | |
2365 | packet_sent = 0; | |
23cd1385 | 2366 | |
6142e0ae | 2367 | retval = usb_ep_queue(dev->in_ep, req, GFP_ATOMIC); |
23cd1385 RB |
2368 | |
2369 | if (!retval) | |
7de73185 | 2370 | debug("%s: packet queued\n", __func__); |
6142e0ae VK |
2371 | while (!packet_sent) { |
2372 | if (get_timer(ts) > timeout) { | |
2373 | printf("timeout sending packets to usb ethernet\n"); | |
2374 | return -1; | |
2375 | } | |
bfa352d1 | 2376 | dm_usb_gadget_handle_interrupts(udev->parent); |
23cd1385 | 2377 | } |
3c425fc0 | 2378 | free(rndis_pkt); |
23cd1385 RB |
2379 | |
2380 | return 0; | |
7612a43d VK |
2381 | drop: |
2382 | dev->stats.tx_dropped++; | |
2383 | return -ENOMEM; | |
23cd1385 RB |
2384 | } |
2385 | ||
da768f9c | 2386 | static void usb_eth_stop(struct udevice *udev) |
23cd1385 | 2387 | { |
da768f9c | 2388 | struct ether_priv *priv = dev_get_priv(udev); |
ae70100c | 2389 | struct eth_dev *dev = &priv->ethdev; |
23cd1385 | 2390 | |
988ee3e3 LW |
2391 | /* If the gadget not registered, simple return */ |
2392 | if (!dev->gadget) | |
2393 | return; | |
2394 | ||
e4ae6660 VK |
2395 | /* |
2396 | * Some USB controllers may need additional deinitialization here | |
2397 | * before dropping pull-up (also due to hardware issues). | |
2398 | * For example: unhandled interrupt with status stage started may | |
2399 | * bring the controller to fully broken state (until board reset). | |
2400 | * There are some variants to debug and fix such cases: | |
2401 | * 1) In the case of RNDIS connection eth_stop can perform additional | |
2402 | * interrupt handling. See RNDIS_COMPLETE_SIGNAL_DISCONNECT definition. | |
2403 | * 2) 'pullup' callback in your UDC driver can be improved to perform | |
2404 | * this deinitialization. | |
2405 | */ | |
bfa352d1 | 2406 | eth_stop(udev); |
7612a43d | 2407 | |
23cd1385 | 2408 | usb_gadget_disconnect(dev->gadget); |
b3649f3b VK |
2409 | |
2410 | /* Clear pending interrupt */ | |
2411 | if (dev->network_started) { | |
bfa352d1 | 2412 | dm_usb_gadget_handle_interrupts(udev->parent); |
b3649f3b VK |
2413 | dev->network_started = 0; |
2414 | } | |
23cd1385 RB |
2415 | } |
2416 | ||
d4a37553 M |
2417 | static int usb_eth_recv(struct udevice *dev, int flags, uchar **packetp) |
2418 | { | |
2419 | struct ether_priv *priv = dev_get_priv(dev); | |
2420 | struct eth_dev *ethdev = &priv->ethdev; | |
d4a37553 | 2421 | |
bfa352d1 | 2422 | dm_usb_gadget_handle_interrupts(dev->parent); |
d4a37553 M |
2423 | |
2424 | if (packet_received) { | |
2425 | if (ethdev->rx_req) { | |
2426 | *packetp = (uchar *)net_rx_packets[0]; | |
2427 | return ethdev->rx_req->length; | |
2428 | } else { | |
9b643e31 | 2429 | pr_err("dev->rx_req invalid"); |
d4a37553 M |
2430 | return -EFAULT; |
2431 | } | |
2432 | } | |
2433 | ||
2434 | return -EAGAIN; | |
2435 | } | |
2436 | ||
2437 | static int usb_eth_free_pkt(struct udevice *dev, uchar *packet, | |
2438 | int length) | |
2439 | { | |
2440 | struct ether_priv *priv = dev_get_priv(dev); | |
2441 | struct eth_dev *ethdev = &priv->ethdev; | |
2442 | ||
2443 | packet_received = 0; | |
2444 | ||
2445 | return rx_submit(ethdev, ethdev->rx_req, 0); | |
2446 | } | |
2447 | ||
d4a37553 M |
2448 | static const struct eth_ops usb_eth_ops = { |
2449 | .start = usb_eth_start, | |
2450 | .send = usb_eth_send, | |
2451 | .recv = usb_eth_recv, | |
2452 | .free_pkt = usb_eth_free_pkt, | |
2453 | .stop = usb_eth_stop, | |
2454 | }; | |
2455 | ||
2456 | int usb_ether_init(void) | |
2457 | { | |
d4a37553 M |
2458 | struct udevice *usb_dev; |
2459 | int ret; | |
2460 | ||
2cb43ef1 MS |
2461 | uclass_first_device(UCLASS_USB_GADGET_GENERIC, &usb_dev); |
2462 | if (!usb_dev) { | |
9b643e31 | 2463 | pr_err("No USB device found\n"); |
2cb43ef1 | 2464 | return -ENODEV; |
d4a37553 M |
2465 | } |
2466 | ||
2cb43ef1 MS |
2467 | ret = device_bind_driver(usb_dev, "usb_ether", "usb_ether", NULL); |
2468 | if (ret) { | |
9b643e31 | 2469 | pr_err("usb - not able to bind usb_ether device\n"); |
d4a37553 M |
2470 | return ret; |
2471 | } | |
2472 | ||
bfa352d1 | 2473 | return 0; |
d4a37553 M |
2474 | } |
2475 | ||
47b121f4 MV |
2476 | static int usb_eth_probe(struct udevice *dev) |
2477 | { | |
2478 | struct ether_priv *priv = dev_get_priv(dev); | |
2479 | struct eth_pdata *pdata = dev_get_plat(dev); | |
2480 | ||
2481 | priv->netdev = dev; | |
2482 | l_priv = priv; | |
2483 | ||
2484 | get_ether_addr(CONFIG_USBNET_DEV_ADDR, pdata->enetaddr); | |
2485 | eth_env_set_enetaddr("usbnet_devaddr", pdata->enetaddr); | |
2486 | ||
718f1d41 MV |
2487 | /* Configure default mac-addresses for the USB ethernet device */ |
2488 | #ifdef CONFIG_USBNET_DEV_ADDR | |
2489 | strlcpy(dev_addr, CONFIG_USBNET_DEV_ADDR, sizeof(dev_addr)); | |
2490 | #endif | |
2491 | #ifdef CONFIG_USBNET_HOST_ADDR | |
2492 | strlcpy(host_addr, CONFIG_USBNET_HOST_ADDR, sizeof(host_addr)); | |
2493 | #endif | |
2494 | /* Check if the user overruled the MAC addresses */ | |
2495 | if (env_get("usbnet_devaddr")) | |
2496 | strlcpy(dev_addr, env_get("usbnet_devaddr"), | |
2497 | sizeof(dev_addr)); | |
2498 | ||
2499 | if (env_get("usbnet_hostaddr")) | |
2500 | strlcpy(host_addr, env_get("usbnet_hostaddr"), | |
2501 | sizeof(host_addr)); | |
2502 | ||
2503 | if (!is_eth_addr_valid(dev_addr)) { | |
2504 | pr_err("Need valid 'usbnet_devaddr' to be set"); | |
2505 | return -EINVAL; | |
2506 | } | |
2507 | if (!is_eth_addr_valid(host_addr)) { | |
2508 | pr_err("Need valid 'usbnet_hostaddr' to be set"); | |
2509 | return -EINVAL; | |
2510 | } | |
2511 | ||
2512 | priv->eth_driver.speed = DEVSPEED; | |
2513 | priv->eth_driver.bind = eth_bind; | |
2514 | priv->eth_driver.unbind = eth_unbind; | |
2515 | priv->eth_driver.setup = eth_setup; | |
2516 | priv->eth_driver.reset = eth_disconnect; | |
2517 | priv->eth_driver.disconnect = eth_disconnect; | |
2518 | priv->eth_driver.suspend = eth_suspend; | |
2519 | priv->eth_driver.resume = eth_resume; | |
2520 | return usb_gadget_register_driver(&priv->eth_driver); | |
2521 | } | |
2522 | ||
2523 | static int usb_eth_remove(struct udevice *dev) | |
2524 | { | |
2525 | struct ether_priv *priv = dev_get_priv(dev); | |
2526 | ||
2527 | usb_gadget_unregister_driver(&priv->eth_driver); | |
2528 | ||
2529 | return 0; | |
2530 | } | |
2531 | ||
2532 | static int usb_eth_unbind(struct udevice *dev) | |
2533 | { | |
bfa352d1 | 2534 | udc_device_put(dev->parent); |
718f1d41 | 2535 | |
47b121f4 MV |
2536 | return 0; |
2537 | } | |
2538 | ||
d4a37553 M |
2539 | U_BOOT_DRIVER(eth_usb) = { |
2540 | .name = "usb_ether", | |
2541 | .id = UCLASS_ETH, | |
2542 | .probe = usb_eth_probe, | |
718f1d41 MV |
2543 | .remove = usb_eth_remove, |
2544 | .unbind = usb_eth_unbind, | |
d4a37553 | 2545 | .ops = &usb_eth_ops, |
41575d8e | 2546 | .priv_auto = sizeof(struct ether_priv), |
caa4daa2 | 2547 | .plat_auto = sizeof(struct eth_pdata), |
d4a37553 M |
2548 | .flags = DM_FLAG_ALLOC_PRIV_DMA, |
2549 | }; |