linux-headers (unknown)
1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 /*
3 * This file holds USB constants and structures that are needed for
4 * USB device APIs. These are used by the USB device model, which is
5 * defined in chapter 9 of the USB 2.0 specification and in the
6 * Wireless USB 1.0 (spread around). Linux has several APIs in C that
7 * need these:
8 *
9 * - the master/host side Linux-USB kernel driver API;
10 * - the "usbfs" user space API; and
11 * - the Linux "gadget" slave/device/peripheral side driver API.
12 *
13 * USB 2.0 adds an additional "On The Go" (OTG) mode, which lets systems
14 * act either as a USB master/host or as a USB slave/device. That means
15 * the master and slave side APIs benefit from working well together.
16 *
17 * There's also "Wireless USB", using low power short range radios for
18 * peripheral interconnection but otherwise building on the USB framework.
19 *
20 * Note all descriptors are declared '__attribute__((packed))' so that:
21 *
22 * [a] they never get padded, either internally (USB spec writers
23 * probably handled that) or externally;
24 *
25 * [b] so that accessing bigger-than-a-bytes fields will never
26 * generate bus errors on any platform, even when the location of
27 * its descriptor inside a bundle isn't "naturally aligned", and
28 *
29 * [c] for consistency, removing all doubt even when it appears to
30 * someone that the two other points are non-issues for that
31 * particular descriptor type.
32 */
33
34 #ifndef __LINUX_USB_CH9_H
35 #define __LINUX_USB_CH9_H
36
37 #include <linux/types.h> /* __u8 etc */
38 #include <asm/byteorder.h> /* le16_to_cpu */
39
40 /*-------------------------------------------------------------------------*/
41
42 /* CONTROL REQUEST SUPPORT */
43
44 /*
45 * USB directions
46 *
47 * This bit flag is used in endpoint descriptors' bEndpointAddress field.
48 * It's also one of three fields in control requests bRequestType.
49 */
50 #define USB_DIR_OUT 0 /* to device */
51 #define USB_DIR_IN 0x80 /* to host */
52
53 /*
54 * USB types, the second of three bRequestType fields
55 */
56 #define USB_TYPE_MASK (0x03 << 5)
57 #define USB_TYPE_STANDARD (0x00 << 5)
58 #define USB_TYPE_CLASS (0x01 << 5)
59 #define USB_TYPE_VENDOR (0x02 << 5)
60 #define USB_TYPE_RESERVED (0x03 << 5)
61
62 /*
63 * USB recipients, the third of three bRequestType fields
64 */
65 #define USB_RECIP_MASK 0x1f
66 #define USB_RECIP_DEVICE 0x00
67 #define USB_RECIP_INTERFACE 0x01
68 #define USB_RECIP_ENDPOINT 0x02
69 #define USB_RECIP_OTHER 0x03
70 /* From Wireless USB 1.0 */
71 #define USB_RECIP_PORT 0x04
72 #define USB_RECIP_RPIPE 0x05
73
74 /*
75 * Standard requests, for the bRequest field of a SETUP packet.
76 *
77 * These are qualified by the bRequestType field, so that for example
78 * TYPE_CLASS or TYPE_VENDOR specific feature flags could be retrieved
79 * by a GET_STATUS request.
80 */
81 #define USB_REQ_GET_STATUS 0x00
82 #define USB_REQ_CLEAR_FEATURE 0x01
83 #define USB_REQ_SET_FEATURE 0x03
84 #define USB_REQ_SET_ADDRESS 0x05
85 #define USB_REQ_GET_DESCRIPTOR 0x06
86 #define USB_REQ_SET_DESCRIPTOR 0x07
87 #define USB_REQ_GET_CONFIGURATION 0x08
88 #define USB_REQ_SET_CONFIGURATION 0x09
89 #define USB_REQ_GET_INTERFACE 0x0A
90 #define USB_REQ_SET_INTERFACE 0x0B
91 #define USB_REQ_SYNCH_FRAME 0x0C
92 #define USB_REQ_SET_SEL 0x30
93 #define USB_REQ_SET_ISOCH_DELAY 0x31
94
95 #define USB_REQ_SET_ENCRYPTION 0x0D /* Wireless USB */
96 #define USB_REQ_GET_ENCRYPTION 0x0E
97 #define USB_REQ_RPIPE_ABORT 0x0E
98 #define USB_REQ_SET_HANDSHAKE 0x0F
99 #define USB_REQ_RPIPE_RESET 0x0F
100 #define USB_REQ_GET_HANDSHAKE 0x10
101 #define USB_REQ_SET_CONNECTION 0x11
102 #define USB_REQ_SET_SECURITY_DATA 0x12
103 #define USB_REQ_GET_SECURITY_DATA 0x13
104 #define USB_REQ_SET_WUSB_DATA 0x14
105 #define USB_REQ_LOOPBACK_DATA_WRITE 0x15
106 #define USB_REQ_LOOPBACK_DATA_READ 0x16
107 #define USB_REQ_SET_INTERFACE_DS 0x17
108
109 /* specific requests for USB Power Delivery */
110 #define USB_REQ_GET_PARTNER_PDO 20
111 #define USB_REQ_GET_BATTERY_STATUS 21
112 #define USB_REQ_SET_PDO 22
113 #define USB_REQ_GET_VDM 23
114 #define USB_REQ_SEND_VDM 24
115
116 /* The Link Power Management (LPM) ECN defines USB_REQ_TEST_AND_SET command,
117 * used by hubs to put ports into a new L1 suspend state, except that it
118 * forgot to define its number ...
119 */
120
121 /*
122 * USB feature flags are written using USB_REQ_{CLEAR,SET}_FEATURE, and
123 * are read as a bit array returned by USB_REQ_GET_STATUS. (So there
124 * are at most sixteen features of each type.) Hubs may also support a
125 * new USB_REQ_TEST_AND_SET_FEATURE to put ports into L1 suspend.
126 */
127 #define USB_DEVICE_SELF_POWERED 0 /* (read only) */
128 #define USB_DEVICE_REMOTE_WAKEUP 1 /* dev may initiate wakeup */
129 #define USB_DEVICE_TEST_MODE 2 /* (wired high speed only) */
130 #define USB_DEVICE_BATTERY 2 /* (wireless) */
131 #define USB_DEVICE_B_HNP_ENABLE 3 /* (otg) dev may initiate HNP */
132 #define USB_DEVICE_WUSB_DEVICE 3 /* (wireless)*/
133 #define USB_DEVICE_A_HNP_SUPPORT 4 /* (otg) RH port supports HNP */
134 #define USB_DEVICE_A_ALT_HNP_SUPPORT 5 /* (otg) other RH port does */
135 #define USB_DEVICE_DEBUG_MODE 6 /* (special devices only) */
136
137 /*
138 * Test Mode Selectors
139 * See USB 2.0 spec Table 9-7
140 */
141 #define USB_TEST_J 1
142 #define USB_TEST_K 2
143 #define USB_TEST_SE0_NAK 3
144 #define USB_TEST_PACKET 4
145 #define USB_TEST_FORCE_ENABLE 5
146
147 /* Status Type */
148 #define USB_STATUS_TYPE_STANDARD 0
149 #define USB_STATUS_TYPE_PTM 1
150
151 /*
152 * New Feature Selectors as added by USB 3.0
153 * See USB 3.0 spec Table 9-7
154 */
155 #define USB_DEVICE_U1_ENABLE 48 /* dev may initiate U1 transition */
156 #define USB_DEVICE_U2_ENABLE 49 /* dev may initiate U2 transition */
157 #define USB_DEVICE_LTM_ENABLE 50 /* dev may send LTM */
158 #define USB_INTRF_FUNC_SUSPEND 0 /* function suspend */
159
160 #define USB_INTR_FUNC_SUSPEND_OPT_MASK 0xFF00
161 /*
162 * Suspend Options, Table 9-8 USB 3.0 spec
163 */
164 #define USB_INTRF_FUNC_SUSPEND_LP (1 << (8 + 0))
165 #define USB_INTRF_FUNC_SUSPEND_RW (1 << (8 + 1))
166
167 /*
168 * Interface status, Figure 9-5 USB 3.0 spec
169 */
170 #define USB_INTRF_STAT_FUNC_RW_CAP 1
171 #define USB_INTRF_STAT_FUNC_RW 2
172
173 #define USB_ENDPOINT_HALT 0 /* IN/OUT will STALL */
174
175 /* Bit array elements as returned by the USB_REQ_GET_STATUS request. */
176 #define USB_DEV_STAT_U1_ENABLED 2 /* transition into U1 state */
177 #define USB_DEV_STAT_U2_ENABLED 3 /* transition into U2 state */
178 #define USB_DEV_STAT_LTM_ENABLED 4 /* Latency tolerance messages */
179
180 /*
181 * Feature selectors from Table 9-8 USB Power Delivery spec
182 */
183 #define USB_DEVICE_BATTERY_WAKE_MASK 40
184 #define USB_DEVICE_OS_IS_PD_AWARE 41
185 #define USB_DEVICE_POLICY_MODE 42
186 #define USB_PORT_PR_SWAP 43
187 #define USB_PORT_GOTO_MIN 44
188 #define USB_PORT_RETURN_POWER 45
189 #define USB_PORT_ACCEPT_PD_REQUEST 46
190 #define USB_PORT_REJECT_PD_REQUEST 47
191 #define USB_PORT_PORT_PD_RESET 48
192 #define USB_PORT_C_PORT_PD_CHANGE 49
193 #define USB_PORT_CABLE_PD_RESET 50
194 #define USB_DEVICE_CHARGING_POLICY 54
195
196 /**
197 * struct usb_ctrlrequest - SETUP data for a USB device control request
198 * @bRequestType: matches the USB bmRequestType field
199 * @bRequest: matches the USB bRequest field
200 * @wValue: matches the USB wValue field (le16 byte order)
201 * @wIndex: matches the USB wIndex field (le16 byte order)
202 * @wLength: matches the USB wLength field (le16 byte order)
203 *
204 * This structure is used to send control requests to a USB device. It matches
205 * the different fields of the USB 2.0 Spec section 9.3, table 9-2. See the
206 * USB spec for a fuller description of the different fields, and what they are
207 * used for.
208 *
209 * Note that the driver for any interface can issue control requests.
210 * For most devices, interfaces don't coordinate with each other, so
211 * such requests may be made at any time.
212 */
213 struct usb_ctrlrequest {
214 __u8 bRequestType;
215 __u8 bRequest;
216 __le16 wValue;
217 __le16 wIndex;
218 __le16 wLength;
219 } __attribute__ ((packed));
220
221 /*-------------------------------------------------------------------------*/
222
223 /*
224 * STANDARD DESCRIPTORS ... as returned by GET_DESCRIPTOR, or
225 * (rarely) accepted by SET_DESCRIPTOR.
226 *
227 * Note that all multi-byte values here are encoded in little endian
228 * byte order "on the wire". Within the kernel and when exposed
229 * through the Linux-USB APIs, they are not converted to cpu byte
230 * order; it is the responsibility of the client code to do this.
231 * The single exception is when device and configuration descriptors (but
232 * not other descriptors) are read from character devices
233 * (i.e. /dev/bus/usb/BBB/DDD);
234 * in this case the fields are converted to host endianness by the kernel.
235 */
236
237 /*
238 * Descriptor types ... USB 2.0 spec table 9.5
239 */
240 #define USB_DT_DEVICE 0x01
241 #define USB_DT_CONFIG 0x02
242 #define USB_DT_STRING 0x03
243 #define USB_DT_INTERFACE 0x04
244 #define USB_DT_ENDPOINT 0x05
245 #define USB_DT_DEVICE_QUALIFIER 0x06
246 #define USB_DT_OTHER_SPEED_CONFIG 0x07
247 #define USB_DT_INTERFACE_POWER 0x08
248 /* these are from a minor usb 2.0 revision (ECN) */
249 #define USB_DT_OTG 0x09
250 #define USB_DT_DEBUG 0x0a
251 #define USB_DT_INTERFACE_ASSOCIATION 0x0b
252 /* these are from the Wireless USB spec */
253 #define USB_DT_SECURITY 0x0c
254 #define USB_DT_KEY 0x0d
255 #define USB_DT_ENCRYPTION_TYPE 0x0e
256 #define USB_DT_BOS 0x0f
257 #define USB_DT_DEVICE_CAPABILITY 0x10
258 #define USB_DT_WIRELESS_ENDPOINT_COMP 0x11
259 #define USB_DT_WIRE_ADAPTER 0x21
260 #define USB_DT_RPIPE 0x22
261 #define USB_DT_CS_RADIO_CONTROL 0x23
262 /* From the T10 UAS specification */
263 #define USB_DT_PIPE_USAGE 0x24
264 /* From the USB 3.0 spec */
265 #define USB_DT_SS_ENDPOINT_COMP 0x30
266 /* From the USB 3.1 spec */
267 #define USB_DT_SSP_ISOC_ENDPOINT_COMP 0x31
268
269 /* Conventional codes for class-specific descriptors. The convention is
270 * defined in the USB "Common Class" Spec (3.11). Individual class specs
271 * are authoritative for their usage, not the "common class" writeup.
272 */
273 #define USB_DT_CS_DEVICE (USB_TYPE_CLASS | USB_DT_DEVICE)
274 #define USB_DT_CS_CONFIG (USB_TYPE_CLASS | USB_DT_CONFIG)
275 #define USB_DT_CS_STRING (USB_TYPE_CLASS | USB_DT_STRING)
276 #define USB_DT_CS_INTERFACE (USB_TYPE_CLASS | USB_DT_INTERFACE)
277 #define USB_DT_CS_ENDPOINT (USB_TYPE_CLASS | USB_DT_ENDPOINT)
278
279 /* All standard descriptors have these 2 fields at the beginning */
280 struct usb_descriptor_header {
281 __u8 bLength;
282 __u8 bDescriptorType;
283 } __attribute__ ((packed));
284
285
286 /*-------------------------------------------------------------------------*/
287
288 /* USB_DT_DEVICE: Device descriptor */
289 struct usb_device_descriptor {
290 __u8 bLength;
291 __u8 bDescriptorType;
292
293 __le16 bcdUSB;
294 __u8 bDeviceClass;
295 __u8 bDeviceSubClass;
296 __u8 bDeviceProtocol;
297 __u8 bMaxPacketSize0;
298 __le16 idVendor;
299 __le16 idProduct;
300 __le16 bcdDevice;
301 __u8 iManufacturer;
302 __u8 iProduct;
303 __u8 iSerialNumber;
304 __u8 bNumConfigurations;
305 } __attribute__ ((packed));
306
307 #define USB_DT_DEVICE_SIZE 18
308
309
310 /*
311 * Device and/or Interface Class codes
312 * as found in bDeviceClass or bInterfaceClass
313 * and defined by www.usb.org documents
314 */
315 #define USB_CLASS_PER_INTERFACE 0 /* for DeviceClass */
316 #define USB_CLASS_AUDIO 1
317 #define USB_CLASS_COMM 2
318 #define USB_CLASS_HID 3
319 #define USB_CLASS_PHYSICAL 5
320 #define USB_CLASS_STILL_IMAGE 6
321 #define USB_CLASS_PRINTER 7
322 #define USB_CLASS_MASS_STORAGE 8
323 #define USB_CLASS_HUB 9
324 #define USB_CLASS_CDC_DATA 0x0a
325 #define USB_CLASS_CSCID 0x0b /* chip+ smart card */
326 #define USB_CLASS_CONTENT_SEC 0x0d /* content security */
327 #define USB_CLASS_VIDEO 0x0e
328 #define USB_CLASS_WIRELESS_CONTROLLER 0xe0
329 #define USB_CLASS_PERSONAL_HEALTHCARE 0x0f
330 #define USB_CLASS_AUDIO_VIDEO 0x10
331 #define USB_CLASS_BILLBOARD 0x11
332 #define USB_CLASS_USB_TYPE_C_BRIDGE 0x12
333 #define USB_CLASS_MISC 0xef
334 #define USB_CLASS_APP_SPEC 0xfe
335 #define USB_CLASS_VENDOR_SPEC 0xff
336
337 #define USB_SUBCLASS_VENDOR_SPEC 0xff
338
339 /*-------------------------------------------------------------------------*/
340
341 /* USB_DT_CONFIG: Configuration descriptor information.
342 *
343 * USB_DT_OTHER_SPEED_CONFIG is the same descriptor, except that the
344 * descriptor type is different. Highspeed-capable devices can look
345 * different depending on what speed they're currently running. Only
346 * devices with a USB_DT_DEVICE_QUALIFIER have any OTHER_SPEED_CONFIG
347 * descriptors.
348 */
349 struct usb_config_descriptor {
350 __u8 bLength;
351 __u8 bDescriptorType;
352
353 __le16 wTotalLength;
354 __u8 bNumInterfaces;
355 __u8 bConfigurationValue;
356 __u8 iConfiguration;
357 __u8 bmAttributes;
358 __u8 bMaxPower;
359 } __attribute__ ((packed));
360
361 #define USB_DT_CONFIG_SIZE 9
362
363 /* from config descriptor bmAttributes */
364 #define USB_CONFIG_ATT_ONE (1 << 7) /* must be set */
365 #define USB_CONFIG_ATT_SELFPOWER (1 << 6) /* self powered */
366 #define USB_CONFIG_ATT_WAKEUP (1 << 5) /* can wakeup */
367 #define USB_CONFIG_ATT_BATTERY (1 << 4) /* battery powered */
368
369 /*-------------------------------------------------------------------------*/
370
371 /* USB String descriptors can contain at most 126 characters. */
372 #define USB_MAX_STRING_LEN 126
373
374 /* USB_DT_STRING: String descriptor */
375 struct usb_string_descriptor {
376 __u8 bLength;
377 __u8 bDescriptorType;
378
379 __le16 wData[1]; /* UTF-16LE encoded */
380 } __attribute__ ((packed));
381
382 /* note that "string" zero is special, it holds language codes that
383 * the device supports, not Unicode characters.
384 */
385
386 /*-------------------------------------------------------------------------*/
387
388 /* USB_DT_INTERFACE: Interface descriptor */
389 struct usb_interface_descriptor {
390 __u8 bLength;
391 __u8 bDescriptorType;
392
393 __u8 bInterfaceNumber;
394 __u8 bAlternateSetting;
395 __u8 bNumEndpoints;
396 __u8 bInterfaceClass;
397 __u8 bInterfaceSubClass;
398 __u8 bInterfaceProtocol;
399 __u8 iInterface;
400 } __attribute__ ((packed));
401
402 #define USB_DT_INTERFACE_SIZE 9
403
404 /*-------------------------------------------------------------------------*/
405
406 /* USB_DT_ENDPOINT: Endpoint descriptor */
407 struct usb_endpoint_descriptor {
408 __u8 bLength;
409 __u8 bDescriptorType;
410
411 __u8 bEndpointAddress;
412 __u8 bmAttributes;
413 __le16 wMaxPacketSize;
414 __u8 bInterval;
415
416 /* NOTE: these two are _only_ in audio endpoints. */
417 /* use USB_DT_ENDPOINT*_SIZE in bLength, not sizeof. */
418 __u8 bRefresh;
419 __u8 bSynchAddress;
420 } __attribute__ ((packed));
421
422 #define USB_DT_ENDPOINT_SIZE 7
423 #define USB_DT_ENDPOINT_AUDIO_SIZE 9 /* Audio extension */
424
425
426 /*
427 * Endpoints
428 */
429 #define USB_ENDPOINT_NUMBER_MASK 0x0f /* in bEndpointAddress */
430 #define USB_ENDPOINT_DIR_MASK 0x80
431
432 #define USB_ENDPOINT_XFERTYPE_MASK 0x03 /* in bmAttributes */
433 #define USB_ENDPOINT_XFER_CONTROL 0
434 #define USB_ENDPOINT_XFER_ISOC 1
435 #define USB_ENDPOINT_XFER_BULK 2
436 #define USB_ENDPOINT_XFER_INT 3
437 #define USB_ENDPOINT_MAX_ADJUSTABLE 0x80
438
439 #define USB_ENDPOINT_MAXP_MASK 0x07ff
440 #define USB_EP_MAXP_MULT_SHIFT 11
441 #define USB_EP_MAXP_MULT_MASK (3 << USB_EP_MAXP_MULT_SHIFT)
442 #define USB_EP_MAXP_MULT(m) \
443 (((m) & USB_EP_MAXP_MULT_MASK) >> USB_EP_MAXP_MULT_SHIFT)
444
445 /* The USB 3.0 spec redefines bits 5:4 of bmAttributes as interrupt ep type. */
446 #define USB_ENDPOINT_INTRTYPE 0x30
447 #define USB_ENDPOINT_INTR_PERIODIC (0 << 4)
448 #define USB_ENDPOINT_INTR_NOTIFICATION (1 << 4)
449
450 #define USB_ENDPOINT_SYNCTYPE 0x0c
451 #define USB_ENDPOINT_SYNC_NONE (0 << 2)
452 #define USB_ENDPOINT_SYNC_ASYNC (1 << 2)
453 #define USB_ENDPOINT_SYNC_ADAPTIVE (2 << 2)
454 #define USB_ENDPOINT_SYNC_SYNC (3 << 2)
455
456 #define USB_ENDPOINT_USAGE_MASK 0x30
457 #define USB_ENDPOINT_USAGE_DATA 0x00
458 #define USB_ENDPOINT_USAGE_FEEDBACK 0x10
459 #define USB_ENDPOINT_USAGE_IMPLICIT_FB 0x20 /* Implicit feedback Data endpoint */
460
461 /*-------------------------------------------------------------------------*/
462
463 /**
464 * usb_endpoint_num - get the endpoint's number
465 * @epd: endpoint to be checked
466 *
467 * Returns @epd's number: 0 to 15.
468 */
469 static __inline__ int usb_endpoint_num(const struct usb_endpoint_descriptor *epd)
470 {
471 return epd->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
472 }
473
474 /**
475 * usb_endpoint_type - get the endpoint's transfer type
476 * @epd: endpoint to be checked
477 *
478 * Returns one of USB_ENDPOINT_XFER_{CONTROL, ISOC, BULK, INT} according
479 * to @epd's transfer type.
480 */
481 static __inline__ int usb_endpoint_type(const struct usb_endpoint_descriptor *epd)
482 {
483 return epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK;
484 }
485
486 /**
487 * usb_endpoint_dir_in - check if the endpoint has IN direction
488 * @epd: endpoint to be checked
489 *
490 * Returns true if the endpoint is of type IN, otherwise it returns false.
491 */
492 static __inline__ int usb_endpoint_dir_in(const struct usb_endpoint_descriptor *epd)
493 {
494 return ((epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN);
495 }
496
497 /**
498 * usb_endpoint_dir_out - check if the endpoint has OUT direction
499 * @epd: endpoint to be checked
500 *
501 * Returns true if the endpoint is of type OUT, otherwise it returns false.
502 */
503 static __inline__ int usb_endpoint_dir_out(
504 const struct usb_endpoint_descriptor *epd)
505 {
506 return ((epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT);
507 }
508
509 /**
510 * usb_endpoint_xfer_bulk - check if the endpoint has bulk transfer type
511 * @epd: endpoint to be checked
512 *
513 * Returns true if the endpoint is of type bulk, otherwise it returns false.
514 */
515 static __inline__ int usb_endpoint_xfer_bulk(
516 const struct usb_endpoint_descriptor *epd)
517 {
518 return ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
519 USB_ENDPOINT_XFER_BULK);
520 }
521
522 /**
523 * usb_endpoint_xfer_control - check if the endpoint has control transfer type
524 * @epd: endpoint to be checked
525 *
526 * Returns true if the endpoint is of type control, otherwise it returns false.
527 */
528 static __inline__ int usb_endpoint_xfer_control(
529 const struct usb_endpoint_descriptor *epd)
530 {
531 return ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
532 USB_ENDPOINT_XFER_CONTROL);
533 }
534
535 /**
536 * usb_endpoint_xfer_int - check if the endpoint has interrupt transfer type
537 * @epd: endpoint to be checked
538 *
539 * Returns true if the endpoint is of type interrupt, otherwise it returns
540 * false.
541 */
542 static __inline__ int usb_endpoint_xfer_int(
543 const struct usb_endpoint_descriptor *epd)
544 {
545 return ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
546 USB_ENDPOINT_XFER_INT);
547 }
548
549 /**
550 * usb_endpoint_xfer_isoc - check if the endpoint has isochronous transfer type
551 * @epd: endpoint to be checked
552 *
553 * Returns true if the endpoint is of type isochronous, otherwise it returns
554 * false.
555 */
556 static __inline__ int usb_endpoint_xfer_isoc(
557 const struct usb_endpoint_descriptor *epd)
558 {
559 return ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
560 USB_ENDPOINT_XFER_ISOC);
561 }
562
563 /**
564 * usb_endpoint_is_bulk_in - check if the endpoint is bulk IN
565 * @epd: endpoint to be checked
566 *
567 * Returns true if the endpoint has bulk transfer type and IN direction,
568 * otherwise it returns false.
569 */
570 static __inline__ int usb_endpoint_is_bulk_in(
571 const struct usb_endpoint_descriptor *epd)
572 {
573 return usb_endpoint_xfer_bulk(epd) && usb_endpoint_dir_in(epd);
574 }
575
576 /**
577 * usb_endpoint_is_bulk_out - check if the endpoint is bulk OUT
578 * @epd: endpoint to be checked
579 *
580 * Returns true if the endpoint has bulk transfer type and OUT direction,
581 * otherwise it returns false.
582 */
583 static __inline__ int usb_endpoint_is_bulk_out(
584 const struct usb_endpoint_descriptor *epd)
585 {
586 return usb_endpoint_xfer_bulk(epd) && usb_endpoint_dir_out(epd);
587 }
588
589 /**
590 * usb_endpoint_is_int_in - check if the endpoint is interrupt IN
591 * @epd: endpoint to be checked
592 *
593 * Returns true if the endpoint has interrupt transfer type and IN direction,
594 * otherwise it returns false.
595 */
596 static __inline__ int usb_endpoint_is_int_in(
597 const struct usb_endpoint_descriptor *epd)
598 {
599 return usb_endpoint_xfer_int(epd) && usb_endpoint_dir_in(epd);
600 }
601
602 /**
603 * usb_endpoint_is_int_out - check if the endpoint is interrupt OUT
604 * @epd: endpoint to be checked
605 *
606 * Returns true if the endpoint has interrupt transfer type and OUT direction,
607 * otherwise it returns false.
608 */
609 static __inline__ int usb_endpoint_is_int_out(
610 const struct usb_endpoint_descriptor *epd)
611 {
612 return usb_endpoint_xfer_int(epd) && usb_endpoint_dir_out(epd);
613 }
614
615 /**
616 * usb_endpoint_is_isoc_in - check if the endpoint is isochronous IN
617 * @epd: endpoint to be checked
618 *
619 * Returns true if the endpoint has isochronous transfer type and IN direction,
620 * otherwise it returns false.
621 */
622 static __inline__ int usb_endpoint_is_isoc_in(
623 const struct usb_endpoint_descriptor *epd)
624 {
625 return usb_endpoint_xfer_isoc(epd) && usb_endpoint_dir_in(epd);
626 }
627
628 /**
629 * usb_endpoint_is_isoc_out - check if the endpoint is isochronous OUT
630 * @epd: endpoint to be checked
631 *
632 * Returns true if the endpoint has isochronous transfer type and OUT direction,
633 * otherwise it returns false.
634 */
635 static __inline__ int usb_endpoint_is_isoc_out(
636 const struct usb_endpoint_descriptor *epd)
637 {
638 return usb_endpoint_xfer_isoc(epd) && usb_endpoint_dir_out(epd);
639 }
640
641 /**
642 * usb_endpoint_maxp - get endpoint's max packet size
643 * @epd: endpoint to be checked
644 *
645 * Returns @epd's max packet bits [10:0]
646 */
647 static __inline__ int usb_endpoint_maxp(const struct usb_endpoint_descriptor *epd)
648 {
649 return __le16_to_cpu(epd->wMaxPacketSize) & USB_ENDPOINT_MAXP_MASK;
650 }
651
652 /**
653 * usb_endpoint_maxp_mult - get endpoint's transactional opportunities
654 * @epd: endpoint to be checked
655 *
656 * Return @epd's wMaxPacketSize[12:11] + 1
657 */
658 static __inline__ int
659 usb_endpoint_maxp_mult(const struct usb_endpoint_descriptor *epd)
660 {
661 int maxp = __le16_to_cpu(epd->wMaxPacketSize);
662
663 return USB_EP_MAXP_MULT(maxp) + 1;
664 }
665
666 static __inline__ int usb_endpoint_interrupt_type(
667 const struct usb_endpoint_descriptor *epd)
668 {
669 return epd->bmAttributes & USB_ENDPOINT_INTRTYPE;
670 }
671
672 /*-------------------------------------------------------------------------*/
673
674 /* USB_DT_SSP_ISOC_ENDPOINT_COMP: SuperSpeedPlus Isochronous Endpoint Companion
675 * descriptor
676 */
677 struct usb_ssp_isoc_ep_comp_descriptor {
678 __u8 bLength;
679 __u8 bDescriptorType;
680 __le16 wReseved;
681 __le32 dwBytesPerInterval;
682 } __attribute__ ((packed));
683
684 #define USB_DT_SSP_ISOC_EP_COMP_SIZE 8
685
686 /*-------------------------------------------------------------------------*/
687
688 /* USB_DT_SS_ENDPOINT_COMP: SuperSpeed Endpoint Companion descriptor */
689 struct usb_ss_ep_comp_descriptor {
690 __u8 bLength;
691 __u8 bDescriptorType;
692
693 __u8 bMaxBurst;
694 __u8 bmAttributes;
695 __le16 wBytesPerInterval;
696 } __attribute__ ((packed));
697
698 #define USB_DT_SS_EP_COMP_SIZE 6
699
700 /* Bits 4:0 of bmAttributes if this is a bulk endpoint */
701 static __inline__ int
702 usb_ss_max_streams(const struct usb_ss_ep_comp_descriptor *comp)
703 {
704 int max_streams;
705
706 if (!comp)
707 return 0;
708
709 max_streams = comp->bmAttributes & 0x1f;
710
711 if (!max_streams)
712 return 0;
713
714 max_streams = 1 << max_streams;
715
716 return max_streams;
717 }
718
719 /* Bits 1:0 of bmAttributes if this is an isoc endpoint */
720 #define USB_SS_MULT(p) (1 + ((p) & 0x3))
721 /* Bit 7 of bmAttributes if a SSP isoc endpoint companion descriptor exists */
722 #define USB_SS_SSP_ISOC_COMP(p) ((p) & (1 << 7))
723
724 /*-------------------------------------------------------------------------*/
725
726 /* USB_DT_DEVICE_QUALIFIER: Device Qualifier descriptor */
727 struct usb_qualifier_descriptor {
728 __u8 bLength;
729 __u8 bDescriptorType;
730
731 __le16 bcdUSB;
732 __u8 bDeviceClass;
733 __u8 bDeviceSubClass;
734 __u8 bDeviceProtocol;
735 __u8 bMaxPacketSize0;
736 __u8 bNumConfigurations;
737 __u8 bRESERVED;
738 } __attribute__ ((packed));
739
740
741 /*-------------------------------------------------------------------------*/
742
743 /* USB_DT_OTG (from OTG 1.0a supplement) */
744 struct usb_otg_descriptor {
745 __u8 bLength;
746 __u8 bDescriptorType;
747
748 __u8 bmAttributes; /* support for HNP, SRP, etc */
749 } __attribute__ ((packed));
750
751 /* USB_DT_OTG (from OTG 2.0 supplement) */
752 struct usb_otg20_descriptor {
753 __u8 bLength;
754 __u8 bDescriptorType;
755
756 __u8 bmAttributes; /* support for HNP, SRP and ADP, etc */
757 __le16 bcdOTG; /* OTG and EH supplement release number
758 * in binary-coded decimal(i.e. 2.0 is 0200H)
759 */
760 } __attribute__ ((packed));
761
762 /* from usb_otg_descriptor.bmAttributes */
763 #define USB_OTG_SRP (1 << 0)
764 #define USB_OTG_HNP (1 << 1) /* swap host/device roles */
765 #define USB_OTG_ADP (1 << 2) /* support ADP */
766
767 #define OTG_STS_SELECTOR 0xF000 /* OTG status selector */
768 /*-------------------------------------------------------------------------*/
769
770 /* USB_DT_DEBUG: for special highspeed devices, replacing serial console */
771 struct usb_debug_descriptor {
772 __u8 bLength;
773 __u8 bDescriptorType;
774
775 /* bulk endpoints with 8 byte maxpacket */
776 __u8 bDebugInEndpoint;
777 __u8 bDebugOutEndpoint;
778 } __attribute__((packed));
779
780 /*-------------------------------------------------------------------------*/
781
782 /* USB_DT_INTERFACE_ASSOCIATION: groups interfaces */
783 struct usb_interface_assoc_descriptor {
784 __u8 bLength;
785 __u8 bDescriptorType;
786
787 __u8 bFirstInterface;
788 __u8 bInterfaceCount;
789 __u8 bFunctionClass;
790 __u8 bFunctionSubClass;
791 __u8 bFunctionProtocol;
792 __u8 iFunction;
793 } __attribute__ ((packed));
794
795 #define USB_DT_INTERFACE_ASSOCIATION_SIZE 8
796
797 /*-------------------------------------------------------------------------*/
798
799 /* USB_DT_SECURITY: group of wireless security descriptors, including
800 * encryption types available for setting up a CC/association.
801 */
802 struct usb_security_descriptor {
803 __u8 bLength;
804 __u8 bDescriptorType;
805
806 __le16 wTotalLength;
807 __u8 bNumEncryptionTypes;
808 } __attribute__((packed));
809
810 /*-------------------------------------------------------------------------*/
811
812 /* USB_DT_KEY: used with {GET,SET}_SECURITY_DATA; only public keys
813 * may be retrieved.
814 */
815 struct usb_key_descriptor {
816 __u8 bLength;
817 __u8 bDescriptorType;
818
819 __u8 tTKID[3];
820 __u8 bReserved;
821 __u8 bKeyData[];
822 } __attribute__((packed));
823
824 /*-------------------------------------------------------------------------*/
825
826 /* USB_DT_ENCRYPTION_TYPE: bundled in DT_SECURITY groups */
827 struct usb_encryption_descriptor {
828 __u8 bLength;
829 __u8 bDescriptorType;
830
831 __u8 bEncryptionType;
832 #define USB_ENC_TYPE_UNSECURE 0
833 #define USB_ENC_TYPE_WIRED 1 /* non-wireless mode */
834 #define USB_ENC_TYPE_CCM_1 2 /* aes128/cbc session */
835 #define USB_ENC_TYPE_RSA_1 3 /* rsa3072/sha1 auth */
836 __u8 bEncryptionValue; /* use in SET_ENCRYPTION */
837 __u8 bAuthKeyIndex;
838 } __attribute__((packed));
839
840
841 /*-------------------------------------------------------------------------*/
842
843 /* USB_DT_BOS: group of device-level capabilities */
844 struct usb_bos_descriptor {
845 __u8 bLength;
846 __u8 bDescriptorType;
847
848 __le16 wTotalLength;
849 __u8 bNumDeviceCaps;
850 } __attribute__((packed));
851
852 #define USB_DT_BOS_SIZE 5
853 /*-------------------------------------------------------------------------*/
854
855 /* USB_DT_DEVICE_CAPABILITY: grouped with BOS */
856 struct usb_dev_cap_header {
857 __u8 bLength;
858 __u8 bDescriptorType;
859 __u8 bDevCapabilityType;
860 } __attribute__((packed));
861
862 #define USB_CAP_TYPE_WIRELESS_USB 1
863
864 struct usb_wireless_cap_descriptor { /* Ultra Wide Band */
865 __u8 bLength;
866 __u8 bDescriptorType;
867 __u8 bDevCapabilityType;
868
869 __u8 bmAttributes;
870 #define USB_WIRELESS_P2P_DRD (1 << 1)
871 #define USB_WIRELESS_BEACON_MASK (3 << 2)
872 #define USB_WIRELESS_BEACON_SELF (1 << 2)
873 #define USB_WIRELESS_BEACON_DIRECTED (2 << 2)
874 #define USB_WIRELESS_BEACON_NONE (3 << 2)
875 __le16 wPHYRates; /* bit rates, Mbps */
876 #define USB_WIRELESS_PHY_53 (1 << 0) /* always set */
877 #define USB_WIRELESS_PHY_80 (1 << 1)
878 #define USB_WIRELESS_PHY_107 (1 << 2) /* always set */
879 #define USB_WIRELESS_PHY_160 (1 << 3)
880 #define USB_WIRELESS_PHY_200 (1 << 4) /* always set */
881 #define USB_WIRELESS_PHY_320 (1 << 5)
882 #define USB_WIRELESS_PHY_400 (1 << 6)
883 #define USB_WIRELESS_PHY_480 (1 << 7)
884 __u8 bmTFITXPowerInfo; /* TFI power levels */
885 __u8 bmFFITXPowerInfo; /* FFI power levels */
886 __le16 bmBandGroup;
887 __u8 bReserved;
888 } __attribute__((packed));
889
890 #define USB_DT_USB_WIRELESS_CAP_SIZE 11
891
892 /* USB 2.0 Extension descriptor */
893 #define USB_CAP_TYPE_EXT 2
894
895 struct usb_ext_cap_descriptor { /* Link Power Management */
896 __u8 bLength;
897 __u8 bDescriptorType;
898 __u8 bDevCapabilityType;
899 __le32 bmAttributes;
900 #define USB_LPM_SUPPORT (1 << 1) /* supports LPM */
901 #define USB_BESL_SUPPORT (1 << 2) /* supports BESL */
902 #define USB_BESL_BASELINE_VALID (1 << 3) /* Baseline BESL valid*/
903 #define USB_BESL_DEEP_VALID (1 << 4) /* Deep BESL valid */
904 #define USB_SET_BESL_BASELINE(p) (((p) & 0xf) << 8)
905 #define USB_SET_BESL_DEEP(p) (((p) & 0xf) << 12)
906 #define USB_GET_BESL_BASELINE(p) (((p) & (0xf << 8)) >> 8)
907 #define USB_GET_BESL_DEEP(p) (((p) & (0xf << 12)) >> 12)
908 } __attribute__((packed));
909
910 #define USB_DT_USB_EXT_CAP_SIZE 7
911
912 /*
913 * SuperSpeed USB Capability descriptor: Defines the set of SuperSpeed USB
914 * specific device level capabilities
915 */
916 #define USB_SS_CAP_TYPE 3
917 struct usb_ss_cap_descriptor { /* Link Power Management */
918 __u8 bLength;
919 __u8 bDescriptorType;
920 __u8 bDevCapabilityType;
921 __u8 bmAttributes;
922 #define USB_LTM_SUPPORT (1 << 1) /* supports LTM */
923 __le16 wSpeedSupported;
924 #define USB_LOW_SPEED_OPERATION (1) /* Low speed operation */
925 #define USB_FULL_SPEED_OPERATION (1 << 1) /* Full speed operation */
926 #define USB_HIGH_SPEED_OPERATION (1 << 2) /* High speed operation */
927 #define USB_5GBPS_OPERATION (1 << 3) /* Operation at 5Gbps */
928 __u8 bFunctionalitySupport;
929 __u8 bU1devExitLat;
930 __le16 bU2DevExitLat;
931 } __attribute__((packed));
932
933 #define USB_DT_USB_SS_CAP_SIZE 10
934
935 /*
936 * Container ID Capability descriptor: Defines the instance unique ID used to
937 * identify the instance across all operating modes
938 */
939 #define CONTAINER_ID_TYPE 4
940 struct usb_ss_container_id_descriptor {
941 __u8 bLength;
942 __u8 bDescriptorType;
943 __u8 bDevCapabilityType;
944 __u8 bReserved;
945 __u8 ContainerID[16]; /* 128-bit number */
946 } __attribute__((packed));
947
948 #define USB_DT_USB_SS_CONTN_ID_SIZE 20
949
950 /*
951 * Platform Device Capability descriptor: Defines platform specific device
952 * capabilities
953 */
954 #define USB_PLAT_DEV_CAP_TYPE 5
955 struct usb_plat_dev_cap_descriptor {
956 __u8 bLength;
957 __u8 bDescriptorType;
958 __u8 bDevCapabilityType;
959 __u8 bReserved;
960 __u8 UUID[16];
961 __u8 CapabilityData[];
962 } __attribute__((packed));
963
964 #define USB_DT_USB_PLAT_DEV_CAP_SIZE(capability_data_size) (20 + capability_data_size)
965
966 /*
967 * SuperSpeed Plus USB Capability descriptor: Defines the set of
968 * SuperSpeed Plus USB specific device level capabilities
969 */
970 #define USB_SSP_CAP_TYPE 0xa
971 struct usb_ssp_cap_descriptor {
972 __u8 bLength;
973 __u8 bDescriptorType;
974 __u8 bDevCapabilityType;
975 __u8 bReserved;
976 __le32 bmAttributes;
977 #define USB_SSP_SUBLINK_SPEED_ATTRIBS (0x1f << 0) /* sublink speed entries */
978 #define USB_SSP_SUBLINK_SPEED_IDS (0xf << 5) /* speed ID entries */
979 __le16 wFunctionalitySupport;
980 #define USB_SSP_MIN_SUBLINK_SPEED_ATTRIBUTE_ID (0xf)
981 #define USB_SSP_MIN_RX_LANE_COUNT (0xf << 8)
982 #define USB_SSP_MIN_TX_LANE_COUNT (0xf << 12)
983 __le16 wReserved;
984 __le32 bmSublinkSpeedAttr[1]; /* list of sublink speed attrib entries */
985 #define USB_SSP_SUBLINK_SPEED_SSID (0xf) /* sublink speed ID */
986 #define USB_SSP_SUBLINK_SPEED_LSE (0x3 << 4) /* Lanespeed exponent */
987 #define USB_SSP_SUBLINK_SPEED_LSE_BPS 0
988 #define USB_SSP_SUBLINK_SPEED_LSE_KBPS 1
989 #define USB_SSP_SUBLINK_SPEED_LSE_MBPS 2
990 #define USB_SSP_SUBLINK_SPEED_LSE_GBPS 3
991
992 #define USB_SSP_SUBLINK_SPEED_ST (0x3 << 6) /* Sublink type */
993 #define USB_SSP_SUBLINK_SPEED_ST_SYM_RX 0
994 #define USB_SSP_SUBLINK_SPEED_ST_ASYM_RX 1
995 #define USB_SSP_SUBLINK_SPEED_ST_SYM_TX 2
996 #define USB_SSP_SUBLINK_SPEED_ST_ASYM_TX 3
997
998 #define USB_SSP_SUBLINK_SPEED_RSVD (0x3f << 8) /* Reserved */
999 #define USB_SSP_SUBLINK_SPEED_LP (0x3 << 14) /* Link protocol */
1000 #define USB_SSP_SUBLINK_SPEED_LP_SS 0
1001 #define USB_SSP_SUBLINK_SPEED_LP_SSP 1
1002
1003 #define USB_SSP_SUBLINK_SPEED_LSM (0xff << 16) /* Lanespeed mantissa */
1004 } __attribute__((packed));
1005
1006 /*
1007 * USB Power Delivery Capability Descriptor:
1008 * Defines capabilities for PD
1009 */
1010 /* Defines the various PD Capabilities of this device */
1011 #define USB_PD_POWER_DELIVERY_CAPABILITY 0x06
1012 /* Provides information on each battery supported by the device */
1013 #define USB_PD_BATTERY_INFO_CAPABILITY 0x07
1014 /* The Consumer characteristics of a Port on the device */
1015 #define USB_PD_PD_CONSUMER_PORT_CAPABILITY 0x08
1016 /* The provider characteristics of a Port on the device */
1017 #define USB_PD_PD_PROVIDER_PORT_CAPABILITY 0x09
1018
1019 struct usb_pd_cap_descriptor {
1020 __u8 bLength;
1021 __u8 bDescriptorType;
1022 __u8 bDevCapabilityType; /* set to USB_PD_POWER_DELIVERY_CAPABILITY */
1023 __u8 bReserved;
1024 __le32 bmAttributes;
1025 #define USB_PD_CAP_BATTERY_CHARGING (1 << 1) /* supports Battery Charging specification */
1026 #define USB_PD_CAP_USB_PD (1 << 2) /* supports USB Power Delivery specification */
1027 #define USB_PD_CAP_PROVIDER (1 << 3) /* can provide power */
1028 #define USB_PD_CAP_CONSUMER (1 << 4) /* can consume power */
1029 #define USB_PD_CAP_CHARGING_POLICY (1 << 5) /* supports CHARGING_POLICY feature */
1030 #define USB_PD_CAP_TYPE_C_CURRENT (1 << 6) /* supports power capabilities defined in the USB Type-C Specification */
1031
1032 #define USB_PD_CAP_PWR_AC (1 << 8)
1033 #define USB_PD_CAP_PWR_BAT (1 << 9)
1034 #define USB_PD_CAP_PWR_USE_V_BUS (1 << 14)
1035
1036 __le16 bmProviderPorts; /* Bit zero refers to the UFP of the device */
1037 __le16 bmConsumerPorts;
1038 __le16 bcdBCVersion;
1039 __le16 bcdPDVersion;
1040 __le16 bcdUSBTypeCVersion;
1041 } __attribute__((packed));
1042
1043 struct usb_pd_cap_battery_info_descriptor {
1044 __u8 bLength;
1045 __u8 bDescriptorType;
1046 __u8 bDevCapabilityType;
1047 /* Index of string descriptor shall contain the user friendly name for this battery */
1048 __u8 iBattery;
1049 /* Index of string descriptor shall contain the Serial Number String for this battery */
1050 __u8 iSerial;
1051 __u8 iManufacturer;
1052 __u8 bBatteryId; /* uniquely identifies this battery in status Messages */
1053 __u8 bReserved;
1054 /*
1055 * Shall contain the Battery Charge value above which this
1056 * battery is considered to be fully charged but not necessarily
1057 * “topped off.”
1058 */
1059 __le32 dwChargedThreshold; /* in mWh */
1060 /*
1061 * Shall contain the minimum charge level of this battery such
1062 * that above this threshold, a device can be assured of being
1063 * able to power up successfully (see Battery Charging 1.2).
1064 */
1065 __le32 dwWeakThreshold; /* in mWh */
1066 __le32 dwBatteryDesignCapacity; /* in mWh */
1067 __le32 dwBatteryLastFullchargeCapacity; /* in mWh */
1068 } __attribute__((packed));
1069
1070 struct usb_pd_cap_consumer_port_descriptor {
1071 __u8 bLength;
1072 __u8 bDescriptorType;
1073 __u8 bDevCapabilityType;
1074 __u8 bReserved;
1075 __u8 bmCapabilities;
1076 /* port will oerate under: */
1077 #define USB_PD_CAP_CONSUMER_BC (1 << 0) /* BC */
1078 #define USB_PD_CAP_CONSUMER_PD (1 << 1) /* PD */
1079 #define USB_PD_CAP_CONSUMER_TYPE_C (1 << 2) /* USB Type-C Current */
1080 __le16 wMinVoltage; /* in 50mV units */
1081 __le16 wMaxVoltage; /* in 50mV units */
1082 __u16 wReserved;
1083 __le32 dwMaxOperatingPower; /* in 10 mW - operating at steady state */
1084 __le32 dwMaxPeakPower; /* in 10mW units - operating at peak power */
1085 __le32 dwMaxPeakPowerTime; /* in 100ms units - duration of peak */
1086 #define USB_PD_CAP_CONSUMER_UNKNOWN_PEAK_POWER_TIME 0xffff
1087 } __attribute__((packed));
1088
1089 struct usb_pd_cap_provider_port_descriptor {
1090 __u8 bLength;
1091 __u8 bDescriptorType;
1092 __u8 bDevCapabilityType;
1093 __u8 bReserved1;
1094 __u8 bmCapabilities;
1095 /* port will oerate under: */
1096 #define USB_PD_CAP_PROVIDER_BC (1 << 0) /* BC */
1097 #define USB_PD_CAP_PROVIDER_PD (1 << 1) /* PD */
1098 #define USB_PD_CAP_PROVIDER_TYPE_C (1 << 2) /* USB Type-C Current */
1099 __u8 bNumOfPDObjects;
1100 __u8 bReserved2;
1101 __le32 wPowerDataObject[];
1102 } __attribute__((packed));
1103
1104 /*
1105 * Precision time measurement capability descriptor: advertised by devices and
1106 * hubs that support PTM
1107 */
1108 #define USB_PTM_CAP_TYPE 0xb
1109 struct usb_ptm_cap_descriptor {
1110 __u8 bLength;
1111 __u8 bDescriptorType;
1112 __u8 bDevCapabilityType;
1113 } __attribute__((packed));
1114
1115 #define USB_DT_USB_PTM_ID_SIZE 3
1116 /*
1117 * The size of the descriptor for the Sublink Speed Attribute Count
1118 * (SSAC) specified in bmAttributes[4:0]. SSAC is zero-based
1119 */
1120 #define USB_DT_USB_SSP_CAP_SIZE(ssac) (12 + (ssac + 1) * 4)
1121
1122 /*-------------------------------------------------------------------------*/
1123
1124 /* USB_DT_WIRELESS_ENDPOINT_COMP: companion descriptor associated with
1125 * each endpoint descriptor for a wireless device
1126 */
1127 struct usb_wireless_ep_comp_descriptor {
1128 __u8 bLength;
1129 __u8 bDescriptorType;
1130
1131 __u8 bMaxBurst;
1132 __u8 bMaxSequence;
1133 __le16 wMaxStreamDelay;
1134 __le16 wOverTheAirPacketSize;
1135 __u8 bOverTheAirInterval;
1136 __u8 bmCompAttributes;
1137 #define USB_ENDPOINT_SWITCH_MASK 0x03 /* in bmCompAttributes */
1138 #define USB_ENDPOINT_SWITCH_NO 0
1139 #define USB_ENDPOINT_SWITCH_SWITCH 1
1140 #define USB_ENDPOINT_SWITCH_SCALE 2
1141 } __attribute__((packed));
1142
1143 /*-------------------------------------------------------------------------*/
1144
1145 /* USB_REQ_SET_HANDSHAKE is a four-way handshake used between a wireless
1146 * host and a device for connection set up, mutual authentication, and
1147 * exchanging short lived session keys. The handshake depends on a CC.
1148 */
1149 struct usb_handshake {
1150 __u8 bMessageNumber;
1151 __u8 bStatus;
1152 __u8 tTKID[3];
1153 __u8 bReserved;
1154 __u8 CDID[16];
1155 __u8 nonce[16];
1156 __u8 MIC[8];
1157 } __attribute__((packed));
1158
1159 /*-------------------------------------------------------------------------*/
1160
1161 /* USB_REQ_SET_CONNECTION modifies or revokes a connection context (CC).
1162 * A CC may also be set up using non-wireless secure channels (including
1163 * wired USB!), and some devices may support CCs with multiple hosts.
1164 */
1165 struct usb_connection_context {
1166 __u8 CHID[16]; /* persistent host id */
1167 __u8 CDID[16]; /* device id (unique w/in host context) */
1168 __u8 CK[16]; /* connection key */
1169 } __attribute__((packed));
1170
1171 /*-------------------------------------------------------------------------*/
1172
1173 /* USB 2.0 defines three speeds, here's how Linux identifies them */
1174
1175 enum usb_device_speed {
1176 USB_SPEED_UNKNOWN = 0, /* enumerating */
1177 USB_SPEED_LOW, USB_SPEED_FULL, /* usb 1.1 */
1178 USB_SPEED_HIGH, /* usb 2.0 */
1179 USB_SPEED_WIRELESS, /* wireless (usb 2.5) */
1180 USB_SPEED_SUPER, /* usb 3.0 */
1181 USB_SPEED_SUPER_PLUS, /* usb 3.1 */
1182 };
1183
1184
1185 enum usb_device_state {
1186 /* NOTATTACHED isn't in the USB spec, and this state acts
1187 * the same as ATTACHED ... but it's clearer this way.
1188 */
1189 USB_STATE_NOTATTACHED = 0,
1190
1191 /* chapter 9 and authentication (wireless) device states */
1192 USB_STATE_ATTACHED,
1193 USB_STATE_POWERED, /* wired */
1194 USB_STATE_RECONNECTING, /* auth */
1195 USB_STATE_UNAUTHENTICATED, /* auth */
1196 USB_STATE_DEFAULT, /* limited function */
1197 USB_STATE_ADDRESS,
1198 USB_STATE_CONFIGURED, /* most functions */
1199
1200 USB_STATE_SUSPENDED
1201
1202 /* NOTE: there are actually four different SUSPENDED
1203 * states, returning to POWERED, DEFAULT, ADDRESS, or
1204 * CONFIGURED respectively when SOF tokens flow again.
1205 * At this level there's no difference between L1 and L2
1206 * suspend states. (L2 being original USB 1.1 suspend.)
1207 */
1208 };
1209
1210 enum usb3_link_state {
1211 USB3_LPM_U0 = 0,
1212 USB3_LPM_U1,
1213 USB3_LPM_U2,
1214 USB3_LPM_U3
1215 };
1216
1217 /*
1218 * A U1 timeout of 0x0 means the parent hub will reject any transitions to U1.
1219 * 0xff means the parent hub will accept transitions to U1, but will not
1220 * initiate a transition.
1221 *
1222 * A U1 timeout of 0x1 to 0x7F also causes the hub to initiate a transition to
1223 * U1 after that many microseconds. Timeouts of 0x80 to 0xFE are reserved
1224 * values.
1225 *
1226 * A U2 timeout of 0x0 means the parent hub will reject any transitions to U2.
1227 * 0xff means the parent hub will accept transitions to U2, but will not
1228 * initiate a transition.
1229 *
1230 * A U2 timeout of 0x1 to 0xFE also causes the hub to initiate a transition to
1231 * U2 after N*256 microseconds. Therefore a U2 timeout value of 0x1 means a U2
1232 * idle timer of 256 microseconds, 0x2 means 512 microseconds, 0xFE means
1233 * 65.024ms.
1234 */
1235 #define USB3_LPM_DISABLED 0x0
1236 #define USB3_LPM_U1_MAX_TIMEOUT 0x7F
1237 #define USB3_LPM_U2_MAX_TIMEOUT 0xFE
1238 #define USB3_LPM_DEVICE_INITIATED 0xFF
1239
1240 struct usb_set_sel_req {
1241 __u8 u1_sel;
1242 __u8 u1_pel;
1243 __le16 u2_sel;
1244 __le16 u2_pel;
1245 } __attribute__ ((packed));
1246
1247 /*
1248 * The Set System Exit Latency control transfer provides one byte each for
1249 * U1 SEL and U1 PEL, so the max exit latency is 0xFF. U2 SEL and U2 PEL each
1250 * are two bytes long.
1251 */
1252 #define USB3_LPM_MAX_U1_SEL_PEL 0xFF
1253 #define USB3_LPM_MAX_U2_SEL_PEL 0xFFFF
1254
1255 /*-------------------------------------------------------------------------*/
1256
1257 /*
1258 * As per USB compliance update, a device that is actively drawing
1259 * more than 100mA from USB must report itself as bus-powered in
1260 * the GetStatus(DEVICE) call.
1261 * https://compliance.usb.org/index.asp?UpdateFile=Electrical&Format=Standard#34
1262 */
1263 #define USB_SELF_POWER_VBUS_MAX_DRAW 100
1264
1265 #endif /* __LINUX_USB_CH9_H */
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