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1da177e4 LT |
1 | /* |
2 | * This file holds USB constants and structures that are needed for USB | |
3 | * device APIs. These are used by the USB device model, which is defined | |
4 | * in chapter 9 of the USB 2.0 specification. Linux has several APIs in C | |
5 | * that need these: | |
6 | * | |
7 | * - the master/host side Linux-USB kernel driver API; | |
8 | * - the "usbfs" user space API; and | |
5da0106f | 9 | * - the Linux "gadget" slave/device/peripheral side driver API. |
1da177e4 LT |
10 | * |
11 | * USB 2.0 adds an additional "On The Go" (OTG) mode, which lets systems | |
12 | * act either as a USB master/host or as a USB slave/device. That means | |
5da0106f DB |
13 | * the master and slave side APIs benefit from working well together. |
14 | * | |
15 | * There's also "Wireless USB", using low power short range radios for | |
16 | * peripheral interconnection but otherwise building on the USB framework. | |
1da177e4 LT |
17 | */ |
18 | ||
19 | #ifndef __LINUX_USB_CH9_H | |
20 | #define __LINUX_USB_CH9_H | |
21 | ||
4cceb4d1 | 22 | #include <linux/types.h> /* __u8 etc */ |
1da177e4 LT |
23 | |
24 | /*-------------------------------------------------------------------------*/ | |
25 | ||
26 | /* CONTROL REQUEST SUPPORT */ | |
27 | ||
28 | /* | |
29 | * USB directions | |
30 | * | |
31 | * This bit flag is used in endpoint descriptors' bEndpointAddress field. | |
32 | * It's also one of three fields in control requests bRequestType. | |
33 | */ | |
34 | #define USB_DIR_OUT 0 /* to device */ | |
35 | #define USB_DIR_IN 0x80 /* to host */ | |
36 | ||
37 | /* | |
38 | * USB types, the second of three bRequestType fields | |
39 | */ | |
40 | #define USB_TYPE_MASK (0x03 << 5) | |
41 | #define USB_TYPE_STANDARD (0x00 << 5) | |
42 | #define USB_TYPE_CLASS (0x01 << 5) | |
43 | #define USB_TYPE_VENDOR (0x02 << 5) | |
44 | #define USB_TYPE_RESERVED (0x03 << 5) | |
45 | ||
46 | /* | |
47 | * USB recipients, the third of three bRequestType fields | |
48 | */ | |
49 | #define USB_RECIP_MASK 0x1f | |
50 | #define USB_RECIP_DEVICE 0x00 | |
51 | #define USB_RECIP_INTERFACE 0x01 | |
52 | #define USB_RECIP_ENDPOINT 0x02 | |
53 | #define USB_RECIP_OTHER 0x03 | |
54 | ||
55 | /* | |
56 | * Standard requests, for the bRequest field of a SETUP packet. | |
57 | * | |
58 | * These are qualified by the bRequestType field, so that for example | |
59 | * TYPE_CLASS or TYPE_VENDOR specific feature flags could be retrieved | |
60 | * by a GET_STATUS request. | |
61 | */ | |
62 | #define USB_REQ_GET_STATUS 0x00 | |
63 | #define USB_REQ_CLEAR_FEATURE 0x01 | |
64 | #define USB_REQ_SET_FEATURE 0x03 | |
65 | #define USB_REQ_SET_ADDRESS 0x05 | |
66 | #define USB_REQ_GET_DESCRIPTOR 0x06 | |
67 | #define USB_REQ_SET_DESCRIPTOR 0x07 | |
68 | #define USB_REQ_GET_CONFIGURATION 0x08 | |
69 | #define USB_REQ_SET_CONFIGURATION 0x09 | |
70 | #define USB_REQ_GET_INTERFACE 0x0A | |
71 | #define USB_REQ_SET_INTERFACE 0x0B | |
72 | #define USB_REQ_SYNCH_FRAME 0x0C | |
73 | ||
5da0106f DB |
74 | #define USB_REQ_SET_ENCRYPTION 0x0D /* Wireless USB */ |
75 | #define USB_REQ_GET_ENCRYPTION 0x0E | |
76 | #define USB_REQ_SET_HANDSHAKE 0x0F | |
77 | #define USB_REQ_GET_HANDSHAKE 0x10 | |
78 | #define USB_REQ_SET_CONNECTION 0x11 | |
79 | #define USB_REQ_SET_SECURITY_DATA 0x12 | |
80 | #define USB_REQ_GET_SECURITY_DATA 0x13 | |
81 | #define USB_REQ_SET_WUSB_DATA 0x14 | |
82 | #define USB_REQ_LOOPBACK_DATA_WRITE 0x15 | |
83 | #define USB_REQ_LOOPBACK_DATA_READ 0x16 | |
84 | #define USB_REQ_SET_INTERFACE_DS 0x17 | |
85 | ||
1da177e4 LT |
86 | /* |
87 | * USB feature flags are written using USB_REQ_{CLEAR,SET}_FEATURE, and | |
88 | * are read as a bit array returned by USB_REQ_GET_STATUS. (So there | |
89 | * are at most sixteen features of each type.) | |
90 | */ | |
91 | #define USB_DEVICE_SELF_POWERED 0 /* (read only) */ | |
92 | #define USB_DEVICE_REMOTE_WAKEUP 1 /* dev may initiate wakeup */ | |
5da0106f DB |
93 | #define USB_DEVICE_TEST_MODE 2 /* (wired high speed only) */ |
94 | #define USB_DEVICE_BATTERY 2 /* (wireless) */ | |
95 | #define USB_DEVICE_B_HNP_ENABLE 3 /* (otg) dev may initiate HNP */ | |
96 | #define USB_DEVICE_WUSB_DEVICE 3 /* (wireless)*/ | |
97 | #define USB_DEVICE_A_HNP_SUPPORT 4 /* (otg) RH port supports HNP */ | |
98 | #define USB_DEVICE_A_ALT_HNP_SUPPORT 5 /* (otg) other RH port does */ | |
1da177e4 LT |
99 | #define USB_DEVICE_DEBUG_MODE 6 /* (special devices only) */ |
100 | ||
101 | #define USB_ENDPOINT_HALT 0 /* IN/OUT will STALL */ | |
102 | ||
103 | ||
104 | /** | |
105 | * struct usb_ctrlrequest - SETUP data for a USB device control request | |
106 | * @bRequestType: matches the USB bmRequestType field | |
107 | * @bRequest: matches the USB bRequest field | |
108 | * @wValue: matches the USB wValue field (le16 byte order) | |
109 | * @wIndex: matches the USB wIndex field (le16 byte order) | |
110 | * @wLength: matches the USB wLength field (le16 byte order) | |
111 | * | |
112 | * This structure is used to send control requests to a USB device. It matches | |
113 | * the different fields of the USB 2.0 Spec section 9.3, table 9-2. See the | |
114 | * USB spec for a fuller description of the different fields, and what they are | |
115 | * used for. | |
116 | * | |
117 | * Note that the driver for any interface can issue control requests. | |
118 | * For most devices, interfaces don't coordinate with each other, so | |
119 | * such requests may be made at any time. | |
120 | */ | |
121 | struct usb_ctrlrequest { | |
122 | __u8 bRequestType; | |
123 | __u8 bRequest; | |
124 | __le16 wValue; | |
125 | __le16 wIndex; | |
126 | __le16 wLength; | |
127 | } __attribute__ ((packed)); | |
128 | ||
129 | /*-------------------------------------------------------------------------*/ | |
130 | ||
131 | /* | |
132 | * STANDARD DESCRIPTORS ... as returned by GET_DESCRIPTOR, or | |
133 | * (rarely) accepted by SET_DESCRIPTOR. | |
134 | * | |
135 | * Note that all multi-byte values here are encoded in little endian | |
136 | * byte order "on the wire". But when exposed through Linux-USB APIs, | |
137 | * they've been converted to cpu byte order. | |
138 | */ | |
139 | ||
140 | /* | |
141 | * Descriptor types ... USB 2.0 spec table 9.5 | |
142 | */ | |
143 | #define USB_DT_DEVICE 0x01 | |
144 | #define USB_DT_CONFIG 0x02 | |
145 | #define USB_DT_STRING 0x03 | |
146 | #define USB_DT_INTERFACE 0x04 | |
147 | #define USB_DT_ENDPOINT 0x05 | |
148 | #define USB_DT_DEVICE_QUALIFIER 0x06 | |
149 | #define USB_DT_OTHER_SPEED_CONFIG 0x07 | |
150 | #define USB_DT_INTERFACE_POWER 0x08 | |
151 | /* these are from a minor usb 2.0 revision (ECN) */ | |
152 | #define USB_DT_OTG 0x09 | |
153 | #define USB_DT_DEBUG 0x0a | |
154 | #define USB_DT_INTERFACE_ASSOCIATION 0x0b | |
5da0106f DB |
155 | /* these are from the Wireless USB spec */ |
156 | #define USB_DT_SECURITY 0x0c | |
157 | #define USB_DT_KEY 0x0d | |
158 | #define USB_DT_ENCRYPTION_TYPE 0x0e | |
159 | #define USB_DT_BOS 0x0f | |
160 | #define USB_DT_DEVICE_CAPABILITY 0x10 | |
161 | #define USB_DT_WIRELESS_ENDPOINT_COMP 0x11 | |
1da177e4 LT |
162 | |
163 | /* conventional codes for class-specific descriptors */ | |
164 | #define USB_DT_CS_DEVICE 0x21 | |
165 | #define USB_DT_CS_CONFIG 0x22 | |
166 | #define USB_DT_CS_STRING 0x23 | |
167 | #define USB_DT_CS_INTERFACE 0x24 | |
168 | #define USB_DT_CS_ENDPOINT 0x25 | |
169 | ||
170 | /* All standard descriptors have these 2 fields at the beginning */ | |
171 | struct usb_descriptor_header { | |
172 | __u8 bLength; | |
173 | __u8 bDescriptorType; | |
174 | } __attribute__ ((packed)); | |
175 | ||
176 | ||
177 | /*-------------------------------------------------------------------------*/ | |
178 | ||
179 | /* USB_DT_DEVICE: Device descriptor */ | |
180 | struct usb_device_descriptor { | |
181 | __u8 bLength; | |
182 | __u8 bDescriptorType; | |
183 | ||
184 | __le16 bcdUSB; | |
185 | __u8 bDeviceClass; | |
186 | __u8 bDeviceSubClass; | |
187 | __u8 bDeviceProtocol; | |
188 | __u8 bMaxPacketSize0; | |
189 | __le16 idVendor; | |
190 | __le16 idProduct; | |
191 | __le16 bcdDevice; | |
192 | __u8 iManufacturer; | |
193 | __u8 iProduct; | |
194 | __u8 iSerialNumber; | |
195 | __u8 bNumConfigurations; | |
196 | } __attribute__ ((packed)); | |
197 | ||
198 | #define USB_DT_DEVICE_SIZE 18 | |
199 | ||
200 | ||
201 | /* | |
202 | * Device and/or Interface Class codes | |
203 | * as found in bDeviceClass or bInterfaceClass | |
204 | * and defined by www.usb.org documents | |
205 | */ | |
206 | #define USB_CLASS_PER_INTERFACE 0 /* for DeviceClass */ | |
207 | #define USB_CLASS_AUDIO 1 | |
208 | #define USB_CLASS_COMM 2 | |
209 | #define USB_CLASS_HID 3 | |
210 | #define USB_CLASS_PHYSICAL 5 | |
211 | #define USB_CLASS_STILL_IMAGE 6 | |
212 | #define USB_CLASS_PRINTER 7 | |
213 | #define USB_CLASS_MASS_STORAGE 8 | |
214 | #define USB_CLASS_HUB 9 | |
215 | #define USB_CLASS_CDC_DATA 0x0a | |
216 | #define USB_CLASS_CSCID 0x0b /* chip+ smart card */ | |
217 | #define USB_CLASS_CONTENT_SEC 0x0d /* content security */ | |
218 | #define USB_CLASS_VIDEO 0x0e | |
5da0106f | 219 | #define USB_CLASS_WIRELESS_CONTROLLER 0xe0 |
1da177e4 LT |
220 | #define USB_CLASS_APP_SPEC 0xfe |
221 | #define USB_CLASS_VENDOR_SPEC 0xff | |
222 | ||
223 | /*-------------------------------------------------------------------------*/ | |
224 | ||
225 | /* USB_DT_CONFIG: Configuration descriptor information. | |
226 | * | |
227 | * USB_DT_OTHER_SPEED_CONFIG is the same descriptor, except that the | |
228 | * descriptor type is different. Highspeed-capable devices can look | |
229 | * different depending on what speed they're currently running. Only | |
230 | * devices with a USB_DT_DEVICE_QUALIFIER have any OTHER_SPEED_CONFIG | |
231 | * descriptors. | |
232 | */ | |
233 | struct usb_config_descriptor { | |
234 | __u8 bLength; | |
235 | __u8 bDescriptorType; | |
236 | ||
237 | __le16 wTotalLength; | |
238 | __u8 bNumInterfaces; | |
239 | __u8 bConfigurationValue; | |
240 | __u8 iConfiguration; | |
241 | __u8 bmAttributes; | |
242 | __u8 bMaxPower; | |
243 | } __attribute__ ((packed)); | |
244 | ||
245 | #define USB_DT_CONFIG_SIZE 9 | |
246 | ||
247 | /* from config descriptor bmAttributes */ | |
248 | #define USB_CONFIG_ATT_ONE (1 << 7) /* must be set */ | |
249 | #define USB_CONFIG_ATT_SELFPOWER (1 << 6) /* self powered */ | |
250 | #define USB_CONFIG_ATT_WAKEUP (1 << 5) /* can wakeup */ | |
5da0106f | 251 | #define USB_CONFIG_ATT_BATTERY (1 << 4) /* battery powered */ |
1da177e4 LT |
252 | |
253 | /*-------------------------------------------------------------------------*/ | |
254 | ||
255 | /* USB_DT_STRING: String descriptor */ | |
256 | struct usb_string_descriptor { | |
257 | __u8 bLength; | |
258 | __u8 bDescriptorType; | |
259 | ||
260 | __le16 wData[1]; /* UTF-16LE encoded */ | |
261 | } __attribute__ ((packed)); | |
262 | ||
263 | /* note that "string" zero is special, it holds language codes that | |
264 | * the device supports, not Unicode characters. | |
265 | */ | |
266 | ||
267 | /*-------------------------------------------------------------------------*/ | |
268 | ||
269 | /* USB_DT_INTERFACE: Interface descriptor */ | |
270 | struct usb_interface_descriptor { | |
271 | __u8 bLength; | |
272 | __u8 bDescriptorType; | |
273 | ||
274 | __u8 bInterfaceNumber; | |
275 | __u8 bAlternateSetting; | |
276 | __u8 bNumEndpoints; | |
277 | __u8 bInterfaceClass; | |
278 | __u8 bInterfaceSubClass; | |
279 | __u8 bInterfaceProtocol; | |
280 | __u8 iInterface; | |
281 | } __attribute__ ((packed)); | |
282 | ||
283 | #define USB_DT_INTERFACE_SIZE 9 | |
284 | ||
285 | /*-------------------------------------------------------------------------*/ | |
286 | ||
287 | /* USB_DT_ENDPOINT: Endpoint descriptor */ | |
288 | struct usb_endpoint_descriptor { | |
289 | __u8 bLength; | |
290 | __u8 bDescriptorType; | |
291 | ||
292 | __u8 bEndpointAddress; | |
293 | __u8 bmAttributes; | |
294 | __le16 wMaxPacketSize; | |
295 | __u8 bInterval; | |
296 | ||
4cceb4d1 GM |
297 | /* NOTE: these two are _only_ in audio endpoints. */ |
298 | /* use USB_DT_ENDPOINT*_SIZE in bLength, not sizeof. */ | |
1da177e4 LT |
299 | __u8 bRefresh; |
300 | __u8 bSynchAddress; | |
301 | } __attribute__ ((packed)); | |
302 | ||
303 | #define USB_DT_ENDPOINT_SIZE 7 | |
304 | #define USB_DT_ENDPOINT_AUDIO_SIZE 9 /* Audio extension */ | |
305 | ||
306 | ||
307 | /* | |
308 | * Endpoints | |
309 | */ | |
310 | #define USB_ENDPOINT_NUMBER_MASK 0x0f /* in bEndpointAddress */ | |
311 | #define USB_ENDPOINT_DIR_MASK 0x80 | |
312 | ||
313 | #define USB_ENDPOINT_XFERTYPE_MASK 0x03 /* in bmAttributes */ | |
314 | #define USB_ENDPOINT_XFER_CONTROL 0 | |
315 | #define USB_ENDPOINT_XFER_ISOC 1 | |
316 | #define USB_ENDPOINT_XFER_BULK 2 | |
317 | #define USB_ENDPOINT_XFER_INT 3 | |
5da0106f | 318 | #define USB_ENDPOINT_MAX_ADJUSTABLE 0x80 |
1da177e4 LT |
319 | |
320 | ||
321 | /*-------------------------------------------------------------------------*/ | |
322 | ||
323 | /* USB_DT_DEVICE_QUALIFIER: Device Qualifier descriptor */ | |
324 | struct usb_qualifier_descriptor { | |
325 | __u8 bLength; | |
326 | __u8 bDescriptorType; | |
327 | ||
328 | __le16 bcdUSB; | |
329 | __u8 bDeviceClass; | |
330 | __u8 bDeviceSubClass; | |
331 | __u8 bDeviceProtocol; | |
332 | __u8 bMaxPacketSize0; | |
333 | __u8 bNumConfigurations; | |
334 | __u8 bRESERVED; | |
335 | } __attribute__ ((packed)); | |
336 | ||
337 | ||
338 | /*-------------------------------------------------------------------------*/ | |
339 | ||
340 | /* USB_DT_OTG (from OTG 1.0a supplement) */ | |
341 | struct usb_otg_descriptor { | |
342 | __u8 bLength; | |
343 | __u8 bDescriptorType; | |
344 | ||
345 | __u8 bmAttributes; /* support for HNP, SRP, etc */ | |
346 | } __attribute__ ((packed)); | |
347 | ||
348 | /* from usb_otg_descriptor.bmAttributes */ | |
349 | #define USB_OTG_SRP (1 << 0) | |
350 | #define USB_OTG_HNP (1 << 1) /* swap host/device roles */ | |
351 | ||
352 | /*-------------------------------------------------------------------------*/ | |
353 | ||
354 | /* USB_DT_DEBUG: for special highspeed devices, replacing serial console */ | |
355 | struct usb_debug_descriptor { | |
356 | __u8 bLength; | |
357 | __u8 bDescriptorType; | |
358 | ||
359 | /* bulk endpoints with 8 byte maxpacket */ | |
360 | __u8 bDebugInEndpoint; | |
361 | __u8 bDebugOutEndpoint; | |
362 | }; | |
363 | ||
364 | /*-------------------------------------------------------------------------*/ | |
365 | ||
366 | /* USB_DT_INTERFACE_ASSOCIATION: groups interfaces */ | |
367 | struct usb_interface_assoc_descriptor { | |
368 | __u8 bLength; | |
369 | __u8 bDescriptorType; | |
370 | ||
371 | __u8 bFirstInterface; | |
372 | __u8 bInterfaceCount; | |
373 | __u8 bFunctionClass; | |
374 | __u8 bFunctionSubClass; | |
375 | __u8 bFunctionProtocol; | |
376 | __u8 iFunction; | |
377 | } __attribute__ ((packed)); | |
378 | ||
379 | ||
5da0106f DB |
380 | /*-------------------------------------------------------------------------*/ |
381 | ||
382 | /* USB_DT_SECURITY: group of wireless security descriptors, including | |
383 | * encryption types available for setting up a CC/association. | |
384 | */ | |
385 | struct usb_security_descriptor { | |
386 | __u8 bLength; | |
387 | __u8 bDescriptorType; | |
388 | ||
389 | __le16 wTotalLength; | |
390 | __u8 bNumEncryptionTypes; | |
391 | }; | |
392 | ||
393 | /*-------------------------------------------------------------------------*/ | |
394 | ||
395 | /* USB_DT_KEY: used with {GET,SET}_SECURITY_DATA; only public keys | |
396 | * may be retrieved. | |
397 | */ | |
398 | struct usb_key_descriptor { | |
399 | __u8 bLength; | |
400 | __u8 bDescriptorType; | |
401 | ||
402 | __u8 tTKID[3]; | |
403 | __u8 bReserved; | |
404 | __u8 bKeyData[0]; | |
405 | }; | |
406 | ||
407 | /*-------------------------------------------------------------------------*/ | |
408 | ||
409 | /* USB_DT_ENCRYPTION_TYPE: bundled in DT_SECURITY groups */ | |
410 | struct usb_encryption_descriptor { | |
411 | __u8 bLength; | |
412 | __u8 bDescriptorType; | |
413 | ||
414 | __u8 bEncryptionType; | |
415 | #define USB_ENC_TYPE_UNSECURE 0 | |
416 | #define USB_ENC_TYPE_WIRED 1 /* non-wireless mode */ | |
417 | #define USB_ENC_TYPE_CCM_1 2 /* aes128/cbc session */ | |
418 | #define USB_ENC_TYPE_RSA_1 3 /* rsa3072/sha1 auth */ | |
419 | __u8 bEncryptionValue; /* use in SET_ENCRYPTION */ | |
420 | __u8 bAuthKeyIndex; | |
421 | }; | |
422 | ||
423 | ||
424 | /*-------------------------------------------------------------------------*/ | |
425 | ||
426 | /* USB_DT_BOS: group of wireless capabilities */ | |
427 | struct usb_bos_descriptor { | |
428 | __u8 bLength; | |
429 | __u8 bDescriptorType; | |
430 | ||
431 | __le16 wTotalLength; | |
432 | __u8 bNumDeviceCaps; | |
433 | }; | |
434 | ||
435 | /*-------------------------------------------------------------------------*/ | |
436 | ||
437 | /* USB_DT_DEVICE_CAPABILITY: grouped with BOS */ | |
438 | struct usb_dev_cap_header { | |
439 | __u8 bLength; | |
440 | __u8 bDescriptorType; | |
441 | __u8 bDevCapabilityType; | |
442 | }; | |
443 | ||
444 | #define USB_CAP_TYPE_WIRELESS_USB 1 | |
445 | ||
446 | struct usb_wireless_cap_descriptor { /* Ultra Wide Band */ | |
447 | __u8 bLength; | |
448 | __u8 bDescriptorType; | |
449 | __u8 bDevCapabilityType; | |
450 | ||
451 | __u8 bmAttributes; | |
452 | #define USB_WIRELESS_P2P_DRD (1 << 1) | |
453 | #define USB_WIRELESS_BEACON_MASK (3 << 2) | |
454 | #define USB_WIRELESS_BEACON_SELF (1 << 2) | |
455 | #define USB_WIRELESS_BEACON_DIRECTED (2 << 2) | |
456 | #define USB_WIRELESS_BEACON_NONE (3 << 2) | |
457 | __le16 wPHYRates; /* bit rates, Mbps */ | |
458 | #define USB_WIRELESS_PHY_53 (1 << 0) /* always set */ | |
459 | #define USB_WIRELESS_PHY_80 (1 << 1) | |
460 | #define USB_WIRELESS_PHY_107 (1 << 2) /* always set */ | |
461 | #define USB_WIRELESS_PHY_160 (1 << 3) | |
462 | #define USB_WIRELESS_PHY_200 (1 << 4) /* always set */ | |
463 | #define USB_WIRELESS_PHY_320 (1 << 5) | |
464 | #define USB_WIRELESS_PHY_400 (1 << 6) | |
465 | #define USB_WIRELESS_PHY_480 (1 << 7) | |
466 | __u8 bmTFITXPowerInfo; /* TFI power levels */ | |
467 | __u8 bmFFITXPowerInfo; /* FFI power levels */ | |
468 | __le16 bmBandGroup; | |
469 | __u8 bReserved; | |
470 | }; | |
471 | ||
472 | /*-------------------------------------------------------------------------*/ | |
473 | ||
474 | /* USB_DT_WIRELESS_ENDPOINT_COMP: companion descriptor associated with | |
475 | * each endpoint descriptor for a wireless device | |
476 | */ | |
477 | struct usb_wireless_ep_comp_descriptor { | |
478 | __u8 bLength; | |
479 | __u8 bDescriptorType; | |
480 | ||
481 | __u8 bMaxBurst; | |
482 | __u8 bMaxSequence; | |
483 | __le16 wMaxStreamDelay; | |
484 | __le16 wOverTheAirPacketSize; | |
485 | __u8 bOverTheAirInterval; | |
486 | __u8 bmCompAttributes; | |
487 | #define USB_ENDPOINT_SWITCH_MASK 0x03 /* in bmCompAttributes */ | |
488 | #define USB_ENDPOINT_SWITCH_NO 0 | |
489 | #define USB_ENDPOINT_SWITCH_SWITCH 1 | |
490 | #define USB_ENDPOINT_SWITCH_SCALE 2 | |
491 | }; | |
492 | ||
493 | /*-------------------------------------------------------------------------*/ | |
494 | ||
495 | /* USB_REQ_SET_HANDSHAKE is a four-way handshake used between a wireless | |
496 | * host and a device for connection set up, mutual authentication, and | |
497 | * exchanging short lived session keys. The handshake depends on a CC. | |
498 | */ | |
499 | struct usb_handshake { | |
500 | __u8 bMessageNumber; | |
501 | __u8 bStatus; | |
502 | __u8 tTKID[3]; | |
503 | __u8 bReserved; | |
504 | __u8 CDID[16]; | |
505 | __u8 nonce[16]; | |
506 | __u8 MIC[8]; | |
507 | }; | |
508 | ||
509 | /*-------------------------------------------------------------------------*/ | |
510 | ||
511 | /* USB_REQ_SET_CONNECTION modifies or revokes a connection context (CC). | |
512 | * A CC may also be set up using non-wireless secure channels (including | |
513 | * wired USB!), and some devices may support CCs with multiple hosts. | |
514 | */ | |
515 | struct usb_connection_context { | |
516 | __u8 CHID[16]; /* persistent host id */ | |
517 | __u8 CDID[16]; /* device id (unique w/in host context) */ | |
518 | __u8 CK[16]; /* connection key */ | |
519 | }; | |
520 | ||
1da177e4 LT |
521 | /*-------------------------------------------------------------------------*/ |
522 | ||
523 | /* USB 2.0 defines three speeds, here's how Linux identifies them */ | |
524 | ||
525 | enum usb_device_speed { | |
526 | USB_SPEED_UNKNOWN = 0, /* enumerating */ | |
527 | USB_SPEED_LOW, USB_SPEED_FULL, /* usb 1.1 */ | |
5da0106f DB |
528 | USB_SPEED_HIGH, /* usb 2.0 */ |
529 | USB_SPEED_VARIABLE, /* wireless (usb 2.5) */ | |
1da177e4 LT |
530 | }; |
531 | ||
532 | enum usb_device_state { | |
533 | /* NOTATTACHED isn't in the USB spec, and this state acts | |
534 | * the same as ATTACHED ... but it's clearer this way. | |
535 | */ | |
536 | USB_STATE_NOTATTACHED = 0, | |
537 | ||
538 | /* the chapter 9 device states */ | |
539 | USB_STATE_ATTACHED, | |
540 | USB_STATE_POWERED, | |
541 | USB_STATE_DEFAULT, /* limited function */ | |
542 | USB_STATE_ADDRESS, | |
543 | USB_STATE_CONFIGURED, /* most functions */ | |
544 | ||
545 | USB_STATE_SUSPENDED | |
546 | ||
547 | /* NOTE: there are actually four different SUSPENDED | |
548 | * states, returning to POWERED, DEFAULT, ADDRESS, or | |
549 | * CONFIGURED respectively when SOF tokens flow again. | |
550 | */ | |
551 | }; | |
552 | ||
553 | #endif /* __LINUX_USB_CH9_H */ |