2 * This file holds USB constants and structures that are needed for
3 * USB device APIs. These are used by the USB device model, which is
4 * defined in chapter 9 of the USB 2.0 specification and in the
5 * Wireless USB 1.0 (spread around). Linux has several APIs in C that
8 * - the master/host side Linux-USB kernel driver API;
9 * - the "usbfs" user space API; and
10 * - the Linux "gadget" slave/device/peripheral side driver API.
12 * USB 2.0 adds an additional "On The Go" (OTG) mode, which lets systems
13 * act either as a USB master/host or as a USB slave/device. That means
14 * the master and slave side APIs benefit from working well together.
16 * There's also "Wireless USB", using low power short range radios for
17 * peripheral interconnection but otherwise building on the USB framework.
19 * Note all descriptors are declared '__attribute__((packed))' so that:
21 * [a] they never get padded, either internally (USB spec writers
22 * probably handled that) or externally;
24 * [b] so that accessing bigger-than-a-bytes fields will never
25 * generate bus errors on any platform, even when the location of
26 * its descriptor inside a bundle isn't "naturally aligned", and
28 * [c] for consistency, removing all doubt even when it appears to
29 * someone that the two other points are non-issues for that
30 * particular descriptor type.
33 #ifndef __LINUX_USB_CH9_H
34 #define __LINUX_USB_CH9_H
36 #include <linux/types.h> /* __u8 etc */
38 /*-------------------------------------------------------------------------*/
40 /* CONTROL REQUEST SUPPORT */
45 * This bit flag is used in endpoint descriptors' bEndpointAddress field.
46 * It's also one of three fields in control requests bRequestType.
48 #define USB_DIR_MASK 0x80
49 #define USB_DIR_OUT 0 /* to device */
50 #define USB_DIR_IN 0x80 /* to host */
53 * USB types, the second of three bRequestType fields
55 #define USB_TYPE_MASK (0x03 << 5)
56 #define USB_TYPE_STANDARD (0x00 << 5)
57 #define USB_TYPE_CLASS (0x01 << 5)
58 #define USB_TYPE_VENDOR (0x02 << 5)
59 #define USB_TYPE_RESERVED (0x03 << 5)
62 * USB recipients, the third of three bRequestType fields
64 #define USB_RECIP_MASK 0x1f
65 #define USB_RECIP_DEVICE 0x00
66 #define USB_RECIP_INTERFACE 0x01
67 #define USB_RECIP_ENDPOINT 0x02
68 #define USB_RECIP_OTHER 0x03
69 /* From Wireless USB 1.0 */
70 #define USB_RECIP_PORT 0x04
71 #define USB_RECIP_RPIPE 0x05
74 * Standard requests, for the bRequest field of a SETUP packet.
76 * These are qualified by the bRequestType field, so that for example
77 * TYPE_CLASS or TYPE_VENDOR specific feature flags could be retrieved
78 * by a GET_STATUS request.
80 #define USB_REQ_GET_STATUS 0x00
81 #define USB_REQ_CLEAR_FEATURE 0x01
82 #define USB_REQ_SET_FEATURE 0x03
83 #define USB_REQ_SET_ADDRESS 0x05
84 #define USB_REQ_GET_DESCRIPTOR 0x06
85 #define USB_REQ_SET_DESCRIPTOR 0x07
86 #define USB_REQ_GET_CONFIGURATION 0x08
87 #define USB_REQ_SET_CONFIGURATION 0x09
88 #define USB_REQ_GET_INTERFACE 0x0A
89 #define USB_REQ_SET_INTERFACE 0x0B
90 #define USB_REQ_SYNCH_FRAME 0x0C
92 #define USB_REQ_SET_ENCRYPTION 0x0D /* Wireless USB */
93 #define USB_REQ_GET_ENCRYPTION 0x0E
94 #define USB_REQ_RPIPE_ABORT 0x0E
95 #define USB_REQ_SET_HANDSHAKE 0x0F
96 #define USB_REQ_RPIPE_RESET 0x0F
97 #define USB_REQ_GET_HANDSHAKE 0x10
98 #define USB_REQ_SET_CONNECTION 0x11
99 #define USB_REQ_SET_SECURITY_DATA 0x12
100 #define USB_REQ_GET_SECURITY_DATA 0x13
101 #define USB_REQ_SET_WUSB_DATA 0x14
102 #define USB_REQ_LOOPBACK_DATA_WRITE 0x15
103 #define USB_REQ_LOOPBACK_DATA_READ 0x16
104 #define USB_REQ_SET_INTERFACE_DS 0x17
106 /* The Link Power Management (LPM) ECN defines USB_REQ_TEST_AND_SET command,
107 * used by hubs to put ports into a new L1 suspend state, except that it
108 * forgot to define its number ...
112 * USB feature flags are written using USB_REQ_{CLEAR,SET}_FEATURE, and
113 * are read as a bit array returned by USB_REQ_GET_STATUS. (So there
114 * are at most sixteen features of each type.) Hubs may also support a
115 * new USB_REQ_TEST_AND_SET_FEATURE to put ports into L1 suspend.
117 #define USB_DEVICE_SELF_POWERED 0 /* (read only) */
118 #define USB_DEVICE_REMOTE_WAKEUP 1 /* dev may initiate wakeup */
119 #define USB_DEVICE_TEST_MODE 2 /* (wired high speed only) */
120 #define USB_DEVICE_BATTERY 2 /* (wireless) */
121 #define USB_DEVICE_B_HNP_ENABLE 3 /* (otg) dev may initiate HNP */
122 #define USB_DEVICE_WUSB_DEVICE 3 /* (wireless)*/
123 #define USB_DEVICE_A_HNP_SUPPORT 4 /* (otg) RH port supports HNP */
124 #define USB_DEVICE_A_ALT_HNP_SUPPORT 5 /* (otg) other RH port does */
125 #define USB_DEVICE_DEBUG_MODE 6 /* (special devices only) */
127 #define USB_ENDPOINT_HALT 0 /* IN/OUT will STALL */
131 * struct usb_ctrlrequest - SETUP data for a USB device control request
132 * @bRequestType: matches the USB bmRequestType field
133 * @bRequest: matches the USB bRequest field
134 * @wValue: matches the USB wValue field (le16 byte order)
135 * @wIndex: matches the USB wIndex field (le16 byte order)
136 * @wLength: matches the USB wLength field (le16 byte order)
138 * This structure is used to send control requests to a USB device. It matches
139 * the different fields of the USB 2.0 Spec section 9.3, table 9-2. See the
140 * USB spec for a fuller description of the different fields, and what they are
143 * Note that the driver for any interface can issue control requests.
144 * For most devices, interfaces don't coordinate with each other, so
145 * such requests may be made at any time.
147 struct usb_ctrlrequest {
153 } __attribute__ ((packed));
155 /*-------------------------------------------------------------------------*/
158 * STANDARD DESCRIPTORS ... as returned by GET_DESCRIPTOR, or
159 * (rarely) accepted by SET_DESCRIPTOR.
161 * Note that all multi-byte values here are encoded in little endian
162 * byte order "on the wire". Within the kernel and when exposed
163 * through the Linux-USB APIs, they are not converted to cpu byte
164 * order; it is the responsibility of the client code to do this.
165 * The single exception is when device and configuration descriptors (but
166 * not other descriptors) are read from usbfs (i.e. /proc/bus/usb/BBB/DDD);
167 * in this case the fields are converted to host endianness by the kernel.
171 * Descriptor types ... USB 2.0 spec table 9.5
173 #define USB_DT_DEVICE 0x01
174 #define USB_DT_CONFIG 0x02
175 #define USB_DT_STRING 0x03
176 #define USB_DT_INTERFACE 0x04
177 #define USB_DT_ENDPOINT 0x05
178 #define USB_DT_DEVICE_QUALIFIER 0x06
179 #define USB_DT_OTHER_SPEED_CONFIG 0x07
180 #define USB_DT_INTERFACE_POWER 0x08
181 /* these are from a minor usb 2.0 revision (ECN) */
182 #define USB_DT_OTG 0x09
183 #define USB_DT_DEBUG 0x0a
184 #define USB_DT_INTERFACE_ASSOCIATION 0x0b
185 /* these are from the Wireless USB spec */
186 #define USB_DT_SECURITY 0x0c
187 #define USB_DT_KEY 0x0d
188 #define USB_DT_ENCRYPTION_TYPE 0x0e
189 #define USB_DT_BOS 0x0f
190 #define USB_DT_DEVICE_CAPABILITY 0x10
191 #define USB_DT_WIRELESS_ENDPOINT_COMP 0x11
192 #define USB_DT_WIRE_ADAPTER 0x21
193 #define USB_DT_RPIPE 0x22
194 #define USB_DT_CS_RADIO_CONTROL 0x23
195 /* From the USB 3.0 spec */
196 #define USB_DT_SS_ENDPOINT_COMP 0x30
198 /* Conventional codes for class-specific descriptors. The convention is
199 * defined in the USB "Common Class" Spec (3.11). Individual class specs
200 * are authoritative for their usage, not the "common class" writeup.
202 #define USB_DT_CS_DEVICE (USB_TYPE_CLASS | USB_DT_DEVICE)
203 #define USB_DT_CS_CONFIG (USB_TYPE_CLASS | USB_DT_CONFIG)
204 #define USB_DT_CS_STRING (USB_TYPE_CLASS | USB_DT_STRING)
205 #define USB_DT_CS_INTERFACE (USB_TYPE_CLASS | USB_DT_INTERFACE)
206 #define USB_DT_CS_ENDPOINT (USB_TYPE_CLASS | USB_DT_ENDPOINT)
208 /* All standard descriptors have these 2 fields at the beginning */
209 struct usb_descriptor_header {
211 __u8 bDescriptorType;
212 } __attribute__ ((packed));
215 /*-------------------------------------------------------------------------*/
217 /* USB_DT_DEVICE: Device descriptor */
218 struct usb_device_descriptor {
220 __u8 bDescriptorType;
224 __u8 bDeviceSubClass;
225 __u8 bDeviceProtocol;
226 __u8 bMaxPacketSize0;
233 __u8 bNumConfigurations;
234 } __attribute__ ((packed));
236 #define USB_DT_DEVICE_SIZE 18
240 * Device and/or Interface Class codes
241 * as found in bDeviceClass or bInterfaceClass
242 * and defined by www.usb.org documents
244 #define USB_CLASS_PER_INTERFACE 0 /* for DeviceClass */
245 #define USB_CLASS_AUDIO 1
246 #define USB_CLASS_COMM 2
247 #define USB_CLASS_HID 3
248 #define USB_CLASS_PHYSICAL 5
249 #define USB_CLASS_STILL_IMAGE 6
250 #define USB_CLASS_PRINTER 7
251 #define USB_CLASS_MASS_STORAGE 8
252 #define USB_CLASS_HUB 9
253 #define USB_CLASS_CDC_DATA 0x0a
254 #define USB_CLASS_CSCID 0x0b /* chip+ smart card */
255 #define USB_CLASS_CONTENT_SEC 0x0d /* content security */
256 #define USB_CLASS_VIDEO 0x0e
257 #define USB_CLASS_WIRELESS_CONTROLLER 0xe0
258 #define USB_CLASS_MISC 0xef
259 #define USB_CLASS_APP_SPEC 0xfe
260 #define USB_CLASS_VENDOR_SPEC 0xff
262 #define USB_SUBCLASS_VENDOR_SPEC 0xff
264 /*-------------------------------------------------------------------------*/
266 /* USB_DT_CONFIG: Configuration descriptor information.
268 * USB_DT_OTHER_SPEED_CONFIG is the same descriptor, except that the
269 * descriptor type is different. Highspeed-capable devices can look
270 * different depending on what speed they're currently running. Only
271 * devices with a USB_DT_DEVICE_QUALIFIER have any OTHER_SPEED_CONFIG
274 struct usb_config_descriptor {
276 __u8 bDescriptorType;
280 __u8 bConfigurationValue;
284 } __attribute__ ((packed));
286 #define USB_DT_CONFIG_SIZE 9
288 /* from config descriptor bmAttributes */
289 #define USB_CONFIG_ATT_ONE (1 << 7) /* must be set */
290 #define USB_CONFIG_ATT_SELFPOWER (1 << 6) /* self powered */
291 #define USB_CONFIG_ATT_WAKEUP (1 << 5) /* can wakeup */
292 #define USB_CONFIG_ATT_BATTERY (1 << 4) /* battery powered */
294 /*-------------------------------------------------------------------------*/
296 /* USB_DT_STRING: String descriptor */
297 struct usb_string_descriptor {
299 __u8 bDescriptorType;
301 __le16 wData[1]; /* UTF-16LE encoded */
302 } __attribute__ ((packed));
304 /* note that "string" zero is special, it holds language codes that
305 * the device supports, not Unicode characters.
308 /*-------------------------------------------------------------------------*/
310 /* USB_DT_INTERFACE: Interface descriptor */
311 struct usb_interface_descriptor {
313 __u8 bDescriptorType;
315 __u8 bInterfaceNumber;
316 __u8 bAlternateSetting;
318 __u8 bInterfaceClass;
319 __u8 bInterfaceSubClass;
320 __u8 bInterfaceProtocol;
322 } __attribute__ ((packed));
324 #define USB_DT_INTERFACE_SIZE 9
326 /*-------------------------------------------------------------------------*/
328 /* USB_DT_ENDPOINT: Endpoint descriptor */
329 struct usb_endpoint_descriptor {
331 __u8 bDescriptorType;
333 __u8 bEndpointAddress;
335 __le16 wMaxPacketSize;
337 } __attribute__ ((packed));
339 #define USB_DT_ENDPOINT_SIZE 7
340 #define USB_DT_ENDPOINT_AUDIO_SIZE 9 /* Audio extension */
346 #define USB_ENDPOINT_NUMBER_MASK 0x0f /* in bEndpointAddress */
347 #define USB_ENDPOINT_DIR_MASK 0x80
349 #define USB_ENDPOINT_SYNCTYPE 0x0c
350 #define USB_ENDPOINT_SYNC_NONE (0 << 2)
351 #define USB_ENDPOINT_SYNC_ASYNC (1 << 2)
352 #define USB_ENDPOINT_SYNC_ADAPTIVE (2 << 2)
353 #define USB_ENDPOINT_SYNC_SYNC (3 << 2)
355 #define USB_ENDPOINT_XFERTYPE_MASK 0x03 /* in bmAttributes */
356 #define USB_ENDPOINT_XFER_CONTROL 0
357 #define USB_ENDPOINT_XFER_ISOC 1
358 #define USB_ENDPOINT_XFER_BULK 2
359 #define USB_ENDPOINT_XFER_INT 3
360 #define USB_ENDPOINT_MAX_ADJUSTABLE 0x80
362 /*-------------------------------------------------------------------------*/
365 * usb_endpoint_num - get the endpoint's number
366 * @epd: endpoint to be checked
368 * Returns @epd's number: 0 to 15.
370 static inline int usb_endpoint_num(const struct usb_endpoint_descriptor *epd)
372 return epd->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
376 * usb_endpoint_type - get the endpoint's transfer type
377 * @epd: endpoint to be checked
379 * Returns one of USB_ENDPOINT_XFER_{CONTROL, ISOC, BULK, INT} according
380 * to @epd's transfer type.
382 static inline int usb_endpoint_type(const struct usb_endpoint_descriptor *epd)
384 return epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK;
388 * usb_endpoint_dir_in - check if the endpoint has IN direction
389 * @epd: endpoint to be checked
391 * Returns true if the endpoint is of type IN, otherwise it returns false.
393 static inline int usb_endpoint_dir_in(const struct usb_endpoint_descriptor *epd)
395 return ((epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN);
399 * usb_endpoint_dir_out - check if the endpoint has OUT direction
400 * @epd: endpoint to be checked
402 * Returns true if the endpoint is of type OUT, otherwise it returns false.
404 static inline int usb_endpoint_dir_out(
405 const struct usb_endpoint_descriptor *epd)
407 return ((epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT);
411 * usb_endpoint_xfer_bulk - check if the endpoint has bulk transfer type
412 * @epd: endpoint to be checked
414 * Returns true if the endpoint is of type bulk, otherwise it returns false.
416 static inline int usb_endpoint_xfer_bulk(
417 const struct usb_endpoint_descriptor *epd)
419 return ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
420 USB_ENDPOINT_XFER_BULK);
424 * usb_endpoint_xfer_control - check if the endpoint has control transfer type
425 * @epd: endpoint to be checked
427 * Returns true if the endpoint is of type control, otherwise it returns false.
429 static inline int usb_endpoint_xfer_control(
430 const struct usb_endpoint_descriptor *epd)
432 return ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
433 USB_ENDPOINT_XFER_CONTROL);
437 * usb_endpoint_xfer_int - check if the endpoint has interrupt transfer type
438 * @epd: endpoint to be checked
440 * Returns true if the endpoint is of type interrupt, otherwise it returns
443 static inline int usb_endpoint_xfer_int(
444 const struct usb_endpoint_descriptor *epd)
446 return ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
447 USB_ENDPOINT_XFER_INT);
451 * usb_endpoint_xfer_isoc - check if the endpoint has isochronous transfer type
452 * @epd: endpoint to be checked
454 * Returns true if the endpoint is of type isochronous, otherwise it returns
457 static inline int usb_endpoint_xfer_isoc(
458 const struct usb_endpoint_descriptor *epd)
460 return (epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
461 USB_ENDPOINT_XFER_ISOC;
465 * usb_endpoint_is_bulk_in - check if the endpoint is bulk IN
466 * @epd: endpoint to be checked
468 * Returns true if the endpoint has bulk transfer type and IN direction,
469 * otherwise it returns false.
471 static inline int usb_endpoint_is_bulk_in(
472 const struct usb_endpoint_descriptor *epd)
474 return usb_endpoint_xfer_bulk(epd) && usb_endpoint_dir_in(epd);
478 * usb_endpoint_is_bulk_out - check if the endpoint is bulk OUT
479 * @epd: endpoint to be checked
481 * Returns true if the endpoint has bulk transfer type and OUT direction,
482 * otherwise it returns false.
484 static inline int usb_endpoint_is_bulk_out(
485 const struct usb_endpoint_descriptor *epd)
487 return usb_endpoint_xfer_bulk(epd) && usb_endpoint_dir_out(epd);
491 * usb_endpoint_is_int_in - check if the endpoint is interrupt IN
492 * @epd: endpoint to be checked
494 * Returns true if the endpoint has interrupt transfer type and IN direction,
495 * otherwise it returns false.
497 static inline int usb_endpoint_is_int_in(
498 const struct usb_endpoint_descriptor *epd)
500 return usb_endpoint_xfer_int(epd) && usb_endpoint_dir_in(epd);
504 * usb_endpoint_is_int_out - check if the endpoint is interrupt OUT
505 * @epd: endpoint to be checked
507 * Returns true if the endpoint has interrupt transfer type and OUT direction,
508 * otherwise it returns false.
510 static inline int usb_endpoint_is_int_out(
511 const struct usb_endpoint_descriptor *epd)
513 return usb_endpoint_xfer_int(epd) && usb_endpoint_dir_out(epd);
517 * usb_endpoint_is_isoc_in - check if the endpoint is isochronous IN
518 * @epd: endpoint to be checked
520 * Returns true if the endpoint has isochronous transfer type and IN direction,
521 * otherwise it returns false.
523 static inline int usb_endpoint_is_isoc_in(
524 const struct usb_endpoint_descriptor *epd)
526 return usb_endpoint_xfer_isoc(epd) && usb_endpoint_dir_in(epd);
530 * usb_endpoint_is_isoc_out - check if the endpoint is isochronous OUT
531 * @epd: endpoint to be checked
533 * Returns true if the endpoint has isochronous transfer type and OUT direction,
534 * otherwise it returns false.
536 static inline int usb_endpoint_is_isoc_out(
537 const struct usb_endpoint_descriptor *epd)
539 return usb_endpoint_xfer_isoc(epd) && usb_endpoint_dir_out(epd);
542 /*-------------------------------------------------------------------------*/
544 /* USB_DT_SS_ENDPOINT_COMP: SuperSpeed Endpoint Companion descriptor */
545 struct usb_ss_ep_comp_descriptor {
547 __u8 bDescriptorType;
551 __le16 wBytesPerInterval;
552 } __attribute__ ((packed));
554 #define USB_DT_SS_EP_COMP_SIZE 6
556 /*-------------------------------------------------------------------------*/
558 /* USB_DT_DEVICE_QUALIFIER: Device Qualifier descriptor */
559 struct usb_qualifier_descriptor {
561 __u8 bDescriptorType;
565 __u8 bDeviceSubClass;
566 __u8 bDeviceProtocol;
567 __u8 bMaxPacketSize0;
568 __u8 bNumConfigurations;
570 } __attribute__ ((packed));
573 /*-------------------------------------------------------------------------*/
575 /* USB_DT_OTG (from OTG 1.0a supplement) */
576 struct usb_otg_descriptor {
578 __u8 bDescriptorType;
580 __u8 bmAttributes; /* support for HNP, SRP, etc */
581 } __attribute__ ((packed));
583 /* from usb_otg_descriptor.bmAttributes */
584 #define USB_OTG_SRP (1 << 0)
585 #define USB_OTG_HNP (1 << 1) /* swap host/device roles */
587 /*-------------------------------------------------------------------------*/
589 /* USB_DT_DEBUG: for special highspeed devices, replacing serial console */
590 struct usb_debug_descriptor {
592 __u8 bDescriptorType;
594 /* bulk endpoints with 8 byte maxpacket */
595 __u8 bDebugInEndpoint;
596 __u8 bDebugOutEndpoint;
597 } __attribute__((packed));
599 /*-------------------------------------------------------------------------*/
601 /* USB_DT_INTERFACE_ASSOCIATION: groups interfaces */
602 struct usb_interface_assoc_descriptor {
604 __u8 bDescriptorType;
606 __u8 bFirstInterface;
607 __u8 bInterfaceCount;
609 __u8 bFunctionSubClass;
610 __u8 bFunctionProtocol;
612 } __attribute__ ((packed));
615 /*-------------------------------------------------------------------------*/
617 /* USB_DT_SECURITY: group of wireless security descriptors, including
618 * encryption types available for setting up a CC/association.
620 struct usb_security_descriptor {
622 __u8 bDescriptorType;
625 __u8 bNumEncryptionTypes;
626 } __attribute__((packed));
628 /*-------------------------------------------------------------------------*/
630 /* USB_DT_KEY: used with {GET,SET}_SECURITY_DATA; only public keys
633 struct usb_key_descriptor {
635 __u8 bDescriptorType;
640 } __attribute__((packed));
642 /*-------------------------------------------------------------------------*/
644 /* USB_DT_ENCRYPTION_TYPE: bundled in DT_SECURITY groups */
645 struct usb_encryption_descriptor {
647 __u8 bDescriptorType;
649 __u8 bEncryptionType;
650 #define USB_ENC_TYPE_UNSECURE 0
651 #define USB_ENC_TYPE_WIRED 1 /* non-wireless mode */
652 #define USB_ENC_TYPE_CCM_1 2 /* aes128/cbc session */
653 #define USB_ENC_TYPE_RSA_1 3 /* rsa3072/sha1 auth */
654 __u8 bEncryptionValue; /* use in SET_ENCRYPTION */
656 } __attribute__((packed));
659 /*-------------------------------------------------------------------------*/
661 /* USB_DT_BOS: group of device-level capabilities */
662 struct usb_bos_descriptor {
664 __u8 bDescriptorType;
668 } __attribute__((packed));
670 /*-------------------------------------------------------------------------*/
672 /* USB_DT_DEVICE_CAPABILITY: grouped with BOS */
673 struct usb_dev_cap_header {
675 __u8 bDescriptorType;
676 __u8 bDevCapabilityType;
677 } __attribute__((packed));
679 #define USB_CAP_TYPE_WIRELESS_USB 1
681 struct usb_wireless_cap_descriptor { /* Ultra Wide Band */
683 __u8 bDescriptorType;
684 __u8 bDevCapabilityType;
687 #define USB_WIRELESS_P2P_DRD (1 << 1)
688 #define USB_WIRELESS_BEACON_MASK (3 << 2)
689 #define USB_WIRELESS_BEACON_SELF (1 << 2)
690 #define USB_WIRELESS_BEACON_DIRECTED (2 << 2)
691 #define USB_WIRELESS_BEACON_NONE (3 << 2)
692 __le16 wPHYRates; /* bit rates, Mbps */
693 #define USB_WIRELESS_PHY_53 (1 << 0) /* always set */
694 #define USB_WIRELESS_PHY_80 (1 << 1)
695 #define USB_WIRELESS_PHY_107 (1 << 2) /* always set */
696 #define USB_WIRELESS_PHY_160 (1 << 3)
697 #define USB_WIRELESS_PHY_200 (1 << 4) /* always set */
698 #define USB_WIRELESS_PHY_320 (1 << 5)
699 #define USB_WIRELESS_PHY_400 (1 << 6)
700 #define USB_WIRELESS_PHY_480 (1 << 7)
701 __u8 bmTFITXPowerInfo; /* TFI power levels */
702 __u8 bmFFITXPowerInfo; /* FFI power levels */
705 } __attribute__((packed));
707 #define USB_CAP_TYPE_EXT 2
709 struct usb_ext_cap_descriptor { /* Link Power Management */
711 __u8 bDescriptorType;
712 __u8 bDevCapabilityType;
714 #define USB_LPM_SUPPORT (1 << 1) /* supports LPM */
715 } __attribute__((packed));
717 /*-------------------------------------------------------------------------*/
719 /* USB_DT_WIRELESS_ENDPOINT_COMP: companion descriptor associated with
720 * each endpoint descriptor for a wireless device
722 struct usb_wireless_ep_comp_descriptor {
724 __u8 bDescriptorType;
728 __le16 wMaxStreamDelay;
729 __le16 wOverTheAirPacketSize;
730 __u8 bOverTheAirInterval;
731 __u8 bmCompAttributes;
732 #define USB_ENDPOINT_SWITCH_MASK 0x03 /* in bmCompAttributes */
733 #define USB_ENDPOINT_SWITCH_NO 0
734 #define USB_ENDPOINT_SWITCH_SWITCH 1
735 #define USB_ENDPOINT_SWITCH_SCALE 2
736 } __attribute__((packed));
738 /*-------------------------------------------------------------------------*/
740 /* USB_REQ_SET_HANDSHAKE is a four-way handshake used between a wireless
741 * host and a device for connection set up, mutual authentication, and
742 * exchanging short lived session keys. The handshake depends on a CC.
744 struct usb_handshake {
752 } __attribute__((packed));
754 /*-------------------------------------------------------------------------*/
756 /* USB_REQ_SET_CONNECTION modifies or revokes a connection context (CC).
757 * A CC may also be set up using non-wireless secure channels (including
758 * wired USB!), and some devices may support CCs with multiple hosts.
760 struct usb_connection_context {
761 __u8 CHID[16]; /* persistent host id */
762 __u8 CDID[16]; /* device id (unique w/in host context) */
763 __u8 CK[16]; /* connection key */
764 } __attribute__((packed));
766 /*-------------------------------------------------------------------------*/
768 /* USB 2.0 defines three speeds, here's how Linux identifies them */
770 enum usb_device_speed {
771 USB_SPEED_UNKNOWN = 0, /* enumerating */
772 USB_SPEED_LOW, USB_SPEED_FULL, /* usb 1.1 */
773 USB_SPEED_HIGH, /* usb 2.0 */
774 USB_SPEED_WIRELESS, /* wireless (usb 2.5) */
775 USB_SPEED_SUPER, /* usb 3.0 */
778 enum usb_device_state {
779 /* NOTATTACHED isn't in the USB spec, and this state acts
780 * the same as ATTACHED ... but it's clearer this way.
782 USB_STATE_NOTATTACHED = 0,
784 /* chapter 9 and authentication (wireless) device states */
786 USB_STATE_POWERED, /* wired */
787 USB_STATE_RECONNECTING, /* auth */
788 USB_STATE_UNAUTHENTICATED, /* auth */
789 USB_STATE_DEFAULT, /* limited function */
791 USB_STATE_CONFIGURED, /* most functions */
795 /* NOTE: there are actually four different SUSPENDED
796 * states, returning to POWERED, DEFAULT, ADDRESS, or
797 * CONFIGURED respectively when SOF tokens flow again.
798 * At this level there's no difference between L1 and L2
799 * suspend states. (L2 being original USB 1.1 suspend.)
803 #endif /* __LINUX_USB_CH9_H */