root/include/uapi/linux/usb/ch9.h

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INCLUDED FROM


DEFINITIONS

This source file includes following definitions.
  1. usb_endpoint_num
  2. usb_endpoint_type
  3. usb_endpoint_dir_in
  4. usb_endpoint_dir_out
  5. usb_endpoint_xfer_bulk
  6. usb_endpoint_xfer_control
  7. usb_endpoint_xfer_int
  8. usb_endpoint_xfer_isoc
  9. usb_endpoint_is_bulk_in
  10. usb_endpoint_is_bulk_out
  11. usb_endpoint_is_int_in
  12. usb_endpoint_is_int_out
  13. usb_endpoint_is_isoc_in
  14. usb_endpoint_is_isoc_out
  15. usb_endpoint_maxp
  16. usb_endpoint_maxp_mult
  17. usb_endpoint_interrupt_type
  18. usb_ss_max_streams

   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 _UAPI__LINUX_USB_CH9_H
  35 #define _UAPI__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 TEST_J          1
 142 #define TEST_K          2
 143 #define TEST_SE0_NAK    3
 144 #define TEST_PACKET     4
 145 #define TEST_FORCE_EN   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_MISC                  0xef
 330 #define USB_CLASS_APP_SPEC              0xfe
 331 #define USB_CLASS_VENDOR_SPEC           0xff
 332 
 333 #define USB_SUBCLASS_VENDOR_SPEC        0xff
 334 
 335 /*-------------------------------------------------------------------------*/
 336 
 337 /* USB_DT_CONFIG: Configuration descriptor information.
 338  *
 339  * USB_DT_OTHER_SPEED_CONFIG is the same descriptor, except that the
 340  * descriptor type is different.  Highspeed-capable devices can look
 341  * different depending on what speed they're currently running.  Only
 342  * devices with a USB_DT_DEVICE_QUALIFIER have any OTHER_SPEED_CONFIG
 343  * descriptors.
 344  */
 345 struct usb_config_descriptor {
 346         __u8  bLength;
 347         __u8  bDescriptorType;
 348 
 349         __le16 wTotalLength;
 350         __u8  bNumInterfaces;
 351         __u8  bConfigurationValue;
 352         __u8  iConfiguration;
 353         __u8  bmAttributes;
 354         __u8  bMaxPower;
 355 } __attribute__ ((packed));
 356 
 357 #define USB_DT_CONFIG_SIZE              9
 358 
 359 /* from config descriptor bmAttributes */
 360 #define USB_CONFIG_ATT_ONE              (1 << 7)        /* must be set */
 361 #define USB_CONFIG_ATT_SELFPOWER        (1 << 6)        /* self powered */
 362 #define USB_CONFIG_ATT_WAKEUP           (1 << 5)        /* can wakeup */
 363 #define USB_CONFIG_ATT_BATTERY          (1 << 4)        /* battery powered */
 364 
 365 /*-------------------------------------------------------------------------*/
 366 
 367 /* USB_DT_STRING: String descriptor */
 368 struct usb_string_descriptor {
 369         __u8  bLength;
 370         __u8  bDescriptorType;
 371 
 372         __le16 wData[1];                /* UTF-16LE encoded */
 373 } __attribute__ ((packed));
 374 
 375 /* note that "string" zero is special, it holds language codes that
 376  * the device supports, not Unicode characters.
 377  */
 378 
 379 /*-------------------------------------------------------------------------*/
 380 
 381 /* USB_DT_INTERFACE: Interface descriptor */
 382 struct usb_interface_descriptor {
 383         __u8  bLength;
 384         __u8  bDescriptorType;
 385 
 386         __u8  bInterfaceNumber;
 387         __u8  bAlternateSetting;
 388         __u8  bNumEndpoints;
 389         __u8  bInterfaceClass;
 390         __u8  bInterfaceSubClass;
 391         __u8  bInterfaceProtocol;
 392         __u8  iInterface;
 393 } __attribute__ ((packed));
 394 
 395 #define USB_DT_INTERFACE_SIZE           9
 396 
 397 /*-------------------------------------------------------------------------*/
 398 
 399 /* USB_DT_ENDPOINT: Endpoint descriptor */
 400 struct usb_endpoint_descriptor {
 401         __u8  bLength;
 402         __u8  bDescriptorType;
 403 
 404         __u8  bEndpointAddress;
 405         __u8  bmAttributes;
 406         __le16 wMaxPacketSize;
 407         __u8  bInterval;
 408 
 409         /* NOTE:  these two are _only_ in audio endpoints. */
 410         /* use USB_DT_ENDPOINT*_SIZE in bLength, not sizeof. */
 411         __u8  bRefresh;
 412         __u8  bSynchAddress;
 413 } __attribute__ ((packed));
 414 
 415 #define USB_DT_ENDPOINT_SIZE            7
 416 #define USB_DT_ENDPOINT_AUDIO_SIZE      9       /* Audio extension */
 417 
 418 
 419 /*
 420  * Endpoints
 421  */
 422 #define USB_ENDPOINT_NUMBER_MASK        0x0f    /* in bEndpointAddress */
 423 #define USB_ENDPOINT_DIR_MASK           0x80
 424 
 425 #define USB_ENDPOINT_XFERTYPE_MASK      0x03    /* in bmAttributes */
 426 #define USB_ENDPOINT_XFER_CONTROL       0
 427 #define USB_ENDPOINT_XFER_ISOC          1
 428 #define USB_ENDPOINT_XFER_BULK          2
 429 #define USB_ENDPOINT_XFER_INT           3
 430 #define USB_ENDPOINT_MAX_ADJUSTABLE     0x80
 431 
 432 #define USB_ENDPOINT_MAXP_MASK  0x07ff
 433 #define USB_EP_MAXP_MULT_SHIFT  11
 434 #define USB_EP_MAXP_MULT_MASK   (3 << USB_EP_MAXP_MULT_SHIFT)
 435 #define USB_EP_MAXP_MULT(m) \
 436         (((m) & USB_EP_MAXP_MULT_MASK) >> USB_EP_MAXP_MULT_SHIFT)
 437 
 438 /* The USB 3.0 spec redefines bits 5:4 of bmAttributes as interrupt ep type. */
 439 #define USB_ENDPOINT_INTRTYPE           0x30
 440 #define USB_ENDPOINT_INTR_PERIODIC      (0 << 4)
 441 #define USB_ENDPOINT_INTR_NOTIFICATION  (1 << 4)
 442 
 443 #define USB_ENDPOINT_SYNCTYPE           0x0c
 444 #define USB_ENDPOINT_SYNC_NONE          (0 << 2)
 445 #define USB_ENDPOINT_SYNC_ASYNC         (1 << 2)
 446 #define USB_ENDPOINT_SYNC_ADAPTIVE      (2 << 2)
 447 #define USB_ENDPOINT_SYNC_SYNC          (3 << 2)
 448 
 449 #define USB_ENDPOINT_USAGE_MASK         0x30
 450 #define USB_ENDPOINT_USAGE_DATA         0x00
 451 #define USB_ENDPOINT_USAGE_FEEDBACK     0x10
 452 #define USB_ENDPOINT_USAGE_IMPLICIT_FB  0x20    /* Implicit feedback Data endpoint */
 453 
 454 /*-------------------------------------------------------------------------*/
 455 
 456 /**
 457  * usb_endpoint_num - get the endpoint's number
 458  * @epd: endpoint to be checked
 459  *
 460  * Returns @epd's number: 0 to 15.
 461  */
 462 static inline int usb_endpoint_num(const struct usb_endpoint_descriptor *epd)
 463 {
 464         return epd->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
 465 }
 466 
 467 /**
 468  * usb_endpoint_type - get the endpoint's transfer type
 469  * @epd: endpoint to be checked
 470  *
 471  * Returns one of USB_ENDPOINT_XFER_{CONTROL, ISOC, BULK, INT} according
 472  * to @epd's transfer type.
 473  */
 474 static inline int usb_endpoint_type(const struct usb_endpoint_descriptor *epd)
 475 {
 476         return epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK;
 477 }
 478 
 479 /**
 480  * usb_endpoint_dir_in - check if the endpoint has IN direction
 481  * @epd: endpoint to be checked
 482  *
 483  * Returns true if the endpoint is of type IN, otherwise it returns false.
 484  */
 485 static inline int usb_endpoint_dir_in(const struct usb_endpoint_descriptor *epd)
 486 {
 487         return ((epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN);
 488 }
 489 
 490 /**
 491  * usb_endpoint_dir_out - check if the endpoint has OUT direction
 492  * @epd: endpoint to be checked
 493  *
 494  * Returns true if the endpoint is of type OUT, otherwise it returns false.
 495  */
 496 static inline int usb_endpoint_dir_out(
 497                                 const struct usb_endpoint_descriptor *epd)
 498 {
 499         return ((epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT);
 500 }
 501 
 502 /**
 503  * usb_endpoint_xfer_bulk - check if the endpoint has bulk transfer type
 504  * @epd: endpoint to be checked
 505  *
 506  * Returns true if the endpoint is of type bulk, otherwise it returns false.
 507  */
 508 static inline int usb_endpoint_xfer_bulk(
 509                                 const struct usb_endpoint_descriptor *epd)
 510 {
 511         return ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
 512                 USB_ENDPOINT_XFER_BULK);
 513 }
 514 
 515 /**
 516  * usb_endpoint_xfer_control - check if the endpoint has control transfer type
 517  * @epd: endpoint to be checked
 518  *
 519  * Returns true if the endpoint is of type control, otherwise it returns false.
 520  */
 521 static inline int usb_endpoint_xfer_control(
 522                                 const struct usb_endpoint_descriptor *epd)
 523 {
 524         return ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
 525                 USB_ENDPOINT_XFER_CONTROL);
 526 }
 527 
 528 /**
 529  * usb_endpoint_xfer_int - check if the endpoint has interrupt transfer type
 530  * @epd: endpoint to be checked
 531  *
 532  * Returns true if the endpoint is of type interrupt, otherwise it returns
 533  * false.
 534  */
 535 static inline int usb_endpoint_xfer_int(
 536                                 const struct usb_endpoint_descriptor *epd)
 537 {
 538         return ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
 539                 USB_ENDPOINT_XFER_INT);
 540 }
 541 
 542 /**
 543  * usb_endpoint_xfer_isoc - check if the endpoint has isochronous transfer type
 544  * @epd: endpoint to be checked
 545  *
 546  * Returns true if the endpoint is of type isochronous, otherwise it returns
 547  * false.
 548  */
 549 static inline int usb_endpoint_xfer_isoc(
 550                                 const struct usb_endpoint_descriptor *epd)
 551 {
 552         return ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
 553                 USB_ENDPOINT_XFER_ISOC);
 554 }
 555 
 556 /**
 557  * usb_endpoint_is_bulk_in - check if the endpoint is bulk IN
 558  * @epd: endpoint to be checked
 559  *
 560  * Returns true if the endpoint has bulk transfer type and IN direction,
 561  * otherwise it returns false.
 562  */
 563 static inline int usb_endpoint_is_bulk_in(
 564                                 const struct usb_endpoint_descriptor *epd)
 565 {
 566         return usb_endpoint_xfer_bulk(epd) && usb_endpoint_dir_in(epd);
 567 }
 568 
 569 /**
 570  * usb_endpoint_is_bulk_out - check if the endpoint is bulk OUT
 571  * @epd: endpoint to be checked
 572  *
 573  * Returns true if the endpoint has bulk transfer type and OUT direction,
 574  * otherwise it returns false.
 575  */
 576 static inline int usb_endpoint_is_bulk_out(
 577                                 const struct usb_endpoint_descriptor *epd)
 578 {
 579         return usb_endpoint_xfer_bulk(epd) && usb_endpoint_dir_out(epd);
 580 }
 581 
 582 /**
 583  * usb_endpoint_is_int_in - check if the endpoint is interrupt IN
 584  * @epd: endpoint to be checked
 585  *
 586  * Returns true if the endpoint has interrupt transfer type and IN direction,
 587  * otherwise it returns false.
 588  */
 589 static inline int usb_endpoint_is_int_in(
 590                                 const struct usb_endpoint_descriptor *epd)
 591 {
 592         return usb_endpoint_xfer_int(epd) && usb_endpoint_dir_in(epd);
 593 }
 594 
 595 /**
 596  * usb_endpoint_is_int_out - check if the endpoint is interrupt OUT
 597  * @epd: endpoint to be checked
 598  *
 599  * Returns true if the endpoint has interrupt transfer type and OUT direction,
 600  * otherwise it returns false.
 601  */
 602 static inline int usb_endpoint_is_int_out(
 603                                 const struct usb_endpoint_descriptor *epd)
 604 {
 605         return usb_endpoint_xfer_int(epd) && usb_endpoint_dir_out(epd);
 606 }
 607 
 608 /**
 609  * usb_endpoint_is_isoc_in - check if the endpoint is isochronous IN
 610  * @epd: endpoint to be checked
 611  *
 612  * Returns true if the endpoint has isochronous transfer type and IN direction,
 613  * otherwise it returns false.
 614  */
 615 static inline int usb_endpoint_is_isoc_in(
 616                                 const struct usb_endpoint_descriptor *epd)
 617 {
 618         return usb_endpoint_xfer_isoc(epd) && usb_endpoint_dir_in(epd);
 619 }
 620 
 621 /**
 622  * usb_endpoint_is_isoc_out - check if the endpoint is isochronous OUT
 623  * @epd: endpoint to be checked
 624  *
 625  * Returns true if the endpoint has isochronous transfer type and OUT direction,
 626  * otherwise it returns false.
 627  */
 628 static inline int usb_endpoint_is_isoc_out(
 629                                 const struct usb_endpoint_descriptor *epd)
 630 {
 631         return usb_endpoint_xfer_isoc(epd) && usb_endpoint_dir_out(epd);
 632 }
 633 
 634 /**
 635  * usb_endpoint_maxp - get endpoint's max packet size
 636  * @epd: endpoint to be checked
 637  *
 638  * Returns @epd's max packet bits [10:0]
 639  */
 640 static inline int usb_endpoint_maxp(const struct usb_endpoint_descriptor *epd)
 641 {
 642         return __le16_to_cpu(epd->wMaxPacketSize) & USB_ENDPOINT_MAXP_MASK;
 643 }
 644 
 645 /**
 646  * usb_endpoint_maxp_mult - get endpoint's transactional opportunities
 647  * @epd: endpoint to be checked
 648  *
 649  * Return @epd's wMaxPacketSize[12:11] + 1
 650  */
 651 static inline int
 652 usb_endpoint_maxp_mult(const struct usb_endpoint_descriptor *epd)
 653 {
 654         int maxp = __le16_to_cpu(epd->wMaxPacketSize);
 655 
 656         return USB_EP_MAXP_MULT(maxp) + 1;
 657 }
 658 
 659 static inline int usb_endpoint_interrupt_type(
 660                 const struct usb_endpoint_descriptor *epd)
 661 {
 662         return epd->bmAttributes & USB_ENDPOINT_INTRTYPE;
 663 }
 664 
 665 /*-------------------------------------------------------------------------*/
 666 
 667 /* USB_DT_SSP_ISOC_ENDPOINT_COMP: SuperSpeedPlus Isochronous Endpoint Companion
 668  * descriptor
 669  */
 670 struct usb_ssp_isoc_ep_comp_descriptor {
 671         __u8  bLength;
 672         __u8  bDescriptorType;
 673         __le16 wReseved;
 674         __le32 dwBytesPerInterval;
 675 } __attribute__ ((packed));
 676 
 677 #define USB_DT_SSP_ISOC_EP_COMP_SIZE            8
 678 
 679 /*-------------------------------------------------------------------------*/
 680 
 681 /* USB_DT_SS_ENDPOINT_COMP: SuperSpeed Endpoint Companion descriptor */
 682 struct usb_ss_ep_comp_descriptor {
 683         __u8  bLength;
 684         __u8  bDescriptorType;
 685 
 686         __u8  bMaxBurst;
 687         __u8  bmAttributes;
 688         __le16 wBytesPerInterval;
 689 } __attribute__ ((packed));
 690 
 691 #define USB_DT_SS_EP_COMP_SIZE          6
 692 
 693 /* Bits 4:0 of bmAttributes if this is a bulk endpoint */
 694 static inline int
 695 usb_ss_max_streams(const struct usb_ss_ep_comp_descriptor *comp)
 696 {
 697         int             max_streams;
 698 
 699         if (!comp)
 700                 return 0;
 701 
 702         max_streams = comp->bmAttributes & 0x1f;
 703 
 704         if (!max_streams)
 705                 return 0;
 706 
 707         max_streams = 1 << max_streams;
 708 
 709         return max_streams;
 710 }
 711 
 712 /* Bits 1:0 of bmAttributes if this is an isoc endpoint */
 713 #define USB_SS_MULT(p)                  (1 + ((p) & 0x3))
 714 /* Bit 7 of bmAttributes if a SSP isoc endpoint companion descriptor exists */
 715 #define USB_SS_SSP_ISOC_COMP(p)         ((p) & (1 << 7))
 716 
 717 /*-------------------------------------------------------------------------*/
 718 
 719 /* USB_DT_DEVICE_QUALIFIER: Device Qualifier descriptor */
 720 struct usb_qualifier_descriptor {
 721         __u8  bLength;
 722         __u8  bDescriptorType;
 723 
 724         __le16 bcdUSB;
 725         __u8  bDeviceClass;
 726         __u8  bDeviceSubClass;
 727         __u8  bDeviceProtocol;
 728         __u8  bMaxPacketSize0;
 729         __u8  bNumConfigurations;
 730         __u8  bRESERVED;
 731 } __attribute__ ((packed));
 732 
 733 
 734 /*-------------------------------------------------------------------------*/
 735 
 736 /* USB_DT_OTG (from OTG 1.0a supplement) */
 737 struct usb_otg_descriptor {
 738         __u8  bLength;
 739         __u8  bDescriptorType;
 740 
 741         __u8  bmAttributes;     /* support for HNP, SRP, etc */
 742 } __attribute__ ((packed));
 743 
 744 /* USB_DT_OTG (from OTG 2.0 supplement) */
 745 struct usb_otg20_descriptor {
 746         __u8  bLength;
 747         __u8  bDescriptorType;
 748 
 749         __u8  bmAttributes;     /* support for HNP, SRP and ADP, etc */
 750         __le16 bcdOTG;          /* OTG and EH supplement release number
 751                                  * in binary-coded decimal(i.e. 2.0 is 0200H)
 752                                  */
 753 } __attribute__ ((packed));
 754 
 755 /* from usb_otg_descriptor.bmAttributes */
 756 #define USB_OTG_SRP             (1 << 0)
 757 #define USB_OTG_HNP             (1 << 1)        /* swap host/device roles */
 758 #define USB_OTG_ADP             (1 << 2)        /* support ADP */
 759 
 760 #define OTG_STS_SELECTOR        0xF000          /* OTG status selector */
 761 /*-------------------------------------------------------------------------*/
 762 
 763 /* USB_DT_DEBUG:  for special highspeed devices, replacing serial console */
 764 struct usb_debug_descriptor {
 765         __u8  bLength;
 766         __u8  bDescriptorType;
 767 
 768         /* bulk endpoints with 8 byte maxpacket */
 769         __u8  bDebugInEndpoint;
 770         __u8  bDebugOutEndpoint;
 771 } __attribute__((packed));
 772 
 773 /*-------------------------------------------------------------------------*/
 774 
 775 /* USB_DT_INTERFACE_ASSOCIATION: groups interfaces */
 776 struct usb_interface_assoc_descriptor {
 777         __u8  bLength;
 778         __u8  bDescriptorType;
 779 
 780         __u8  bFirstInterface;
 781         __u8  bInterfaceCount;
 782         __u8  bFunctionClass;
 783         __u8  bFunctionSubClass;
 784         __u8  bFunctionProtocol;
 785         __u8  iFunction;
 786 } __attribute__ ((packed));
 787 
 788 #define USB_DT_INTERFACE_ASSOCIATION_SIZE       8
 789 
 790 /*-------------------------------------------------------------------------*/
 791 
 792 /* USB_DT_SECURITY:  group of wireless security descriptors, including
 793  * encryption types available for setting up a CC/association.
 794  */
 795 struct usb_security_descriptor {
 796         __u8  bLength;
 797         __u8  bDescriptorType;
 798 
 799         __le16 wTotalLength;
 800         __u8  bNumEncryptionTypes;
 801 } __attribute__((packed));
 802 
 803 /*-------------------------------------------------------------------------*/
 804 
 805 /* USB_DT_KEY:  used with {GET,SET}_SECURITY_DATA; only public keys
 806  * may be retrieved.
 807  */
 808 struct usb_key_descriptor {
 809         __u8  bLength;
 810         __u8  bDescriptorType;
 811 
 812         __u8  tTKID[3];
 813         __u8  bReserved;
 814         __u8  bKeyData[0];
 815 } __attribute__((packed));
 816 
 817 /*-------------------------------------------------------------------------*/
 818 
 819 /* USB_DT_ENCRYPTION_TYPE:  bundled in DT_SECURITY groups */
 820 struct usb_encryption_descriptor {
 821         __u8  bLength;
 822         __u8  bDescriptorType;
 823 
 824         __u8  bEncryptionType;
 825 #define USB_ENC_TYPE_UNSECURE           0
 826 #define USB_ENC_TYPE_WIRED              1       /* non-wireless mode */
 827 #define USB_ENC_TYPE_CCM_1              2       /* aes128/cbc session */
 828 #define USB_ENC_TYPE_RSA_1              3       /* rsa3072/sha1 auth */
 829         __u8  bEncryptionValue;         /* use in SET_ENCRYPTION */
 830         __u8  bAuthKeyIndex;
 831 } __attribute__((packed));
 832 
 833 
 834 /*-------------------------------------------------------------------------*/
 835 
 836 /* USB_DT_BOS:  group of device-level capabilities */
 837 struct usb_bos_descriptor {
 838         __u8  bLength;
 839         __u8  bDescriptorType;
 840 
 841         __le16 wTotalLength;
 842         __u8  bNumDeviceCaps;
 843 } __attribute__((packed));
 844 
 845 #define USB_DT_BOS_SIZE         5
 846 /*-------------------------------------------------------------------------*/
 847 
 848 /* USB_DT_DEVICE_CAPABILITY:  grouped with BOS */
 849 struct usb_dev_cap_header {
 850         __u8  bLength;
 851         __u8  bDescriptorType;
 852         __u8  bDevCapabilityType;
 853 } __attribute__((packed));
 854 
 855 #define USB_CAP_TYPE_WIRELESS_USB       1
 856 
 857 struct usb_wireless_cap_descriptor {    /* Ultra Wide Band */
 858         __u8  bLength;
 859         __u8  bDescriptorType;
 860         __u8  bDevCapabilityType;
 861 
 862         __u8  bmAttributes;
 863 #define USB_WIRELESS_P2P_DRD            (1 << 1)
 864 #define USB_WIRELESS_BEACON_MASK        (3 << 2)
 865 #define USB_WIRELESS_BEACON_SELF        (1 << 2)
 866 #define USB_WIRELESS_BEACON_DIRECTED    (2 << 2)
 867 #define USB_WIRELESS_BEACON_NONE        (3 << 2)
 868         __le16 wPHYRates;       /* bit rates, Mbps */
 869 #define USB_WIRELESS_PHY_53             (1 << 0)        /* always set */
 870 #define USB_WIRELESS_PHY_80             (1 << 1)
 871 #define USB_WIRELESS_PHY_107            (1 << 2)        /* always set */
 872 #define USB_WIRELESS_PHY_160            (1 << 3)
 873 #define USB_WIRELESS_PHY_200            (1 << 4)        /* always set */
 874 #define USB_WIRELESS_PHY_320            (1 << 5)
 875 #define USB_WIRELESS_PHY_400            (1 << 6)
 876 #define USB_WIRELESS_PHY_480            (1 << 7)
 877         __u8  bmTFITXPowerInfo; /* TFI power levels */
 878         __u8  bmFFITXPowerInfo; /* FFI power levels */
 879         __le16 bmBandGroup;
 880         __u8  bReserved;
 881 } __attribute__((packed));
 882 
 883 #define USB_DT_USB_WIRELESS_CAP_SIZE    11
 884 
 885 /* USB 2.0 Extension descriptor */
 886 #define USB_CAP_TYPE_EXT                2
 887 
 888 struct usb_ext_cap_descriptor {         /* Link Power Management */
 889         __u8  bLength;
 890         __u8  bDescriptorType;
 891         __u8  bDevCapabilityType;
 892         __le32 bmAttributes;
 893 #define USB_LPM_SUPPORT                 (1 << 1)        /* supports LPM */
 894 #define USB_BESL_SUPPORT                (1 << 2)        /* supports BESL */
 895 #define USB_BESL_BASELINE_VALID         (1 << 3)        /* Baseline BESL valid*/
 896 #define USB_BESL_DEEP_VALID             (1 << 4)        /* Deep BESL valid */
 897 #define USB_SET_BESL_BASELINE(p)        (((p) & 0xf) << 8)
 898 #define USB_SET_BESL_DEEP(p)            (((p) & 0xf) << 12)
 899 #define USB_GET_BESL_BASELINE(p)        (((p) & (0xf << 8)) >> 8)
 900 #define USB_GET_BESL_DEEP(p)            (((p) & (0xf << 12)) >> 12)
 901 } __attribute__((packed));
 902 
 903 #define USB_DT_USB_EXT_CAP_SIZE 7
 904 
 905 /*
 906  * SuperSpeed USB Capability descriptor: Defines the set of SuperSpeed USB
 907  * specific device level capabilities
 908  */
 909 #define         USB_SS_CAP_TYPE         3
 910 struct usb_ss_cap_descriptor {          /* Link Power Management */
 911         __u8  bLength;
 912         __u8  bDescriptorType;
 913         __u8  bDevCapabilityType;
 914         __u8  bmAttributes;
 915 #define USB_LTM_SUPPORT                 (1 << 1) /* supports LTM */
 916         __le16 wSpeedSupported;
 917 #define USB_LOW_SPEED_OPERATION         (1)      /* Low speed operation */
 918 #define USB_FULL_SPEED_OPERATION        (1 << 1) /* Full speed operation */
 919 #define USB_HIGH_SPEED_OPERATION        (1 << 2) /* High speed operation */
 920 #define USB_5GBPS_OPERATION             (1 << 3) /* Operation at 5Gbps */
 921         __u8  bFunctionalitySupport;
 922         __u8  bU1devExitLat;
 923         __le16 bU2DevExitLat;
 924 } __attribute__((packed));
 925 
 926 #define USB_DT_USB_SS_CAP_SIZE  10
 927 
 928 /*
 929  * Container ID Capability descriptor: Defines the instance unique ID used to
 930  * identify the instance across all operating modes
 931  */
 932 #define CONTAINER_ID_TYPE       4
 933 struct usb_ss_container_id_descriptor {
 934         __u8  bLength;
 935         __u8  bDescriptorType;
 936         __u8  bDevCapabilityType;
 937         __u8  bReserved;
 938         __u8  ContainerID[16]; /* 128-bit number */
 939 } __attribute__((packed));
 940 
 941 #define USB_DT_USB_SS_CONTN_ID_SIZE     20
 942 
 943 /*
 944  * SuperSpeed Plus USB Capability descriptor: Defines the set of
 945  * SuperSpeed Plus USB specific device level capabilities
 946  */
 947 #define USB_SSP_CAP_TYPE        0xa
 948 struct usb_ssp_cap_descriptor {
 949         __u8  bLength;
 950         __u8  bDescriptorType;
 951         __u8  bDevCapabilityType;
 952         __u8  bReserved;
 953         __le32 bmAttributes;
 954 #define USB_SSP_SUBLINK_SPEED_ATTRIBS   (0x1f << 0) /* sublink speed entries */
 955 #define USB_SSP_SUBLINK_SPEED_IDS       (0xf << 5)  /* speed ID entries */
 956         __le16  wFunctionalitySupport;
 957 #define USB_SSP_MIN_SUBLINK_SPEED_ATTRIBUTE_ID  (0xf)
 958 #define USB_SSP_MIN_RX_LANE_COUNT               (0xf << 8)
 959 #define USB_SSP_MIN_TX_LANE_COUNT               (0xf << 12)
 960         __le16 wReserved;
 961         __le32 bmSublinkSpeedAttr[1]; /* list of sublink speed attrib entries */
 962 #define USB_SSP_SUBLINK_SPEED_SSID      (0xf)           /* sublink speed ID */
 963 #define USB_SSP_SUBLINK_SPEED_LSE       (0x3 << 4)      /* Lanespeed exponent */
 964 #define USB_SSP_SUBLINK_SPEED_ST        (0x3 << 6)      /* Sublink type */
 965 #define USB_SSP_SUBLINK_SPEED_RSVD      (0x3f << 8)     /* Reserved */
 966 #define USB_SSP_SUBLINK_SPEED_LP        (0x3 << 14)     /* Link protocol */
 967 #define USB_SSP_SUBLINK_SPEED_LSM       (0xff << 16)    /* Lanespeed mantissa */
 968 } __attribute__((packed));
 969 
 970 /*
 971  * USB Power Delivery Capability Descriptor:
 972  * Defines capabilities for PD
 973  */
 974 /* Defines the various PD Capabilities of this device */
 975 #define USB_PD_POWER_DELIVERY_CAPABILITY        0x06
 976 /* Provides information on each battery supported by the device */
 977 #define USB_PD_BATTERY_INFO_CAPABILITY          0x07
 978 /* The Consumer characteristics of a Port on the device */
 979 #define USB_PD_PD_CONSUMER_PORT_CAPABILITY      0x08
 980 /* The provider characteristics of a Port on the device */
 981 #define USB_PD_PD_PROVIDER_PORT_CAPABILITY      0x09
 982 
 983 struct usb_pd_cap_descriptor {
 984         __u8  bLength;
 985         __u8  bDescriptorType;
 986         __u8  bDevCapabilityType; /* set to USB_PD_POWER_DELIVERY_CAPABILITY */
 987         __u8  bReserved;
 988         __le32 bmAttributes;
 989 #define USB_PD_CAP_BATTERY_CHARGING     (1 << 1) /* supports Battery Charging specification */
 990 #define USB_PD_CAP_USB_PD               (1 << 2) /* supports USB Power Delivery specification */
 991 #define USB_PD_CAP_PROVIDER             (1 << 3) /* can provide power */
 992 #define USB_PD_CAP_CONSUMER             (1 << 4) /* can consume power */
 993 #define USB_PD_CAP_CHARGING_POLICY      (1 << 5) /* supports CHARGING_POLICY feature */
 994 #define USB_PD_CAP_TYPE_C_CURRENT       (1 << 6) /* supports power capabilities defined in the USB Type-C Specification */
 995 
 996 #define USB_PD_CAP_PWR_AC               (1 << 8)
 997 #define USB_PD_CAP_PWR_BAT              (1 << 9)
 998 #define USB_PD_CAP_PWR_USE_V_BUS        (1 << 14)
 999 
1000         __le16 bmProviderPorts; /* Bit zero refers to the UFP of the device */
1001         __le16 bmConsumerPorts;
1002         __le16 bcdBCVersion;
1003         __le16 bcdPDVersion;
1004         __le16 bcdUSBTypeCVersion;
1005 } __attribute__((packed));
1006 
1007 struct usb_pd_cap_battery_info_descriptor {
1008         __u8 bLength;
1009         __u8 bDescriptorType;
1010         __u8 bDevCapabilityType;
1011         /* Index of string descriptor shall contain the user friendly name for this battery */
1012         __u8 iBattery;
1013         /* Index of string descriptor shall contain the Serial Number String for this battery */
1014         __u8 iSerial;
1015         __u8 iManufacturer;
1016         __u8 bBatteryId; /* uniquely identifies this battery in status Messages */
1017         __u8 bReserved;
1018         /*
1019          * Shall contain the Battery Charge value above which this
1020          * battery is considered to be fully charged but not necessarily
1021          * “topped off.”
1022          */
1023         __le32 dwChargedThreshold; /* in mWh */
1024         /*
1025          * Shall contain the minimum charge level of this battery such
1026          * that above this threshold, a device can be assured of being
1027          * able to power up successfully (see Battery Charging 1.2).
1028          */
1029         __le32 dwWeakThreshold; /* in mWh */
1030         __le32 dwBatteryDesignCapacity; /* in mWh */
1031         __le32 dwBatteryLastFullchargeCapacity; /* in mWh */
1032 } __attribute__((packed));
1033 
1034 struct usb_pd_cap_consumer_port_descriptor {
1035         __u8 bLength;
1036         __u8 bDescriptorType;
1037         __u8 bDevCapabilityType;
1038         __u8 bReserved;
1039         __u8 bmCapabilities;
1040 /* port will oerate under: */
1041 #define USB_PD_CAP_CONSUMER_BC          (1 << 0) /* BC */
1042 #define USB_PD_CAP_CONSUMER_PD          (1 << 1) /* PD */
1043 #define USB_PD_CAP_CONSUMER_TYPE_C      (1 << 2) /* USB Type-C Current */
1044         __le16 wMinVoltage; /* in 50mV units */
1045         __le16 wMaxVoltage; /* in 50mV units */
1046         __u16 wReserved;
1047         __le32 dwMaxOperatingPower; /* in 10 mW - operating at steady state */
1048         __le32 dwMaxPeakPower; /* in 10mW units - operating at peak power */
1049         __le32 dwMaxPeakPowerTime; /* in 100ms units - duration of peak */
1050 #define USB_PD_CAP_CONSUMER_UNKNOWN_PEAK_POWER_TIME 0xffff
1051 } __attribute__((packed));
1052 
1053 struct usb_pd_cap_provider_port_descriptor {
1054         __u8 bLength;
1055         __u8 bDescriptorType;
1056         __u8 bDevCapabilityType;
1057         __u8 bReserved1;
1058         __u8 bmCapabilities;
1059 /* port will oerate under: */
1060 #define USB_PD_CAP_PROVIDER_BC          (1 << 0) /* BC */
1061 #define USB_PD_CAP_PROVIDER_PD          (1 << 1) /* PD */
1062 #define USB_PD_CAP_PROVIDER_TYPE_C      (1 << 2) /* USB Type-C Current */
1063         __u8 bNumOfPDObjects;
1064         __u8 bReserved2;
1065         __le32 wPowerDataObject[];
1066 } __attribute__((packed));
1067 
1068 /*
1069  * Precision time measurement capability descriptor: advertised by devices and
1070  * hubs that support PTM
1071  */
1072 #define USB_PTM_CAP_TYPE        0xb
1073 struct usb_ptm_cap_descriptor {
1074         __u8  bLength;
1075         __u8  bDescriptorType;
1076         __u8  bDevCapabilityType;
1077 } __attribute__((packed));
1078 
1079 #define USB_DT_USB_PTM_ID_SIZE          3
1080 /*
1081  * The size of the descriptor for the Sublink Speed Attribute Count
1082  * (SSAC) specified in bmAttributes[4:0]. SSAC is zero-based
1083  */
1084 #define USB_DT_USB_SSP_CAP_SIZE(ssac)   (12 + (ssac + 1) * 4)
1085 
1086 /*-------------------------------------------------------------------------*/
1087 
1088 /* USB_DT_WIRELESS_ENDPOINT_COMP:  companion descriptor associated with
1089  * each endpoint descriptor for a wireless device
1090  */
1091 struct usb_wireless_ep_comp_descriptor {
1092         __u8  bLength;
1093         __u8  bDescriptorType;
1094 
1095         __u8  bMaxBurst;
1096         __u8  bMaxSequence;
1097         __le16 wMaxStreamDelay;
1098         __le16 wOverTheAirPacketSize;
1099         __u8  bOverTheAirInterval;
1100         __u8  bmCompAttributes;
1101 #define USB_ENDPOINT_SWITCH_MASK        0x03    /* in bmCompAttributes */
1102 #define USB_ENDPOINT_SWITCH_NO          0
1103 #define USB_ENDPOINT_SWITCH_SWITCH      1
1104 #define USB_ENDPOINT_SWITCH_SCALE       2
1105 } __attribute__((packed));
1106 
1107 /*-------------------------------------------------------------------------*/
1108 
1109 /* USB_REQ_SET_HANDSHAKE is a four-way handshake used between a wireless
1110  * host and a device for connection set up, mutual authentication, and
1111  * exchanging short lived session keys.  The handshake depends on a CC.
1112  */
1113 struct usb_handshake {
1114         __u8 bMessageNumber;
1115         __u8 bStatus;
1116         __u8 tTKID[3];
1117         __u8 bReserved;
1118         __u8 CDID[16];
1119         __u8 nonce[16];
1120         __u8 MIC[8];
1121 } __attribute__((packed));
1122 
1123 /*-------------------------------------------------------------------------*/
1124 
1125 /* USB_REQ_SET_CONNECTION modifies or revokes a connection context (CC).
1126  * A CC may also be set up using non-wireless secure channels (including
1127  * wired USB!), and some devices may support CCs with multiple hosts.
1128  */
1129 struct usb_connection_context {
1130         __u8 CHID[16];          /* persistent host id */
1131         __u8 CDID[16];          /* device id (unique w/in host context) */
1132         __u8 CK[16];            /* connection key */
1133 } __attribute__((packed));
1134 
1135 /*-------------------------------------------------------------------------*/
1136 
1137 /* USB 2.0 defines three speeds, here's how Linux identifies them */
1138 
1139 enum usb_device_speed {
1140         USB_SPEED_UNKNOWN = 0,                  /* enumerating */
1141         USB_SPEED_LOW, USB_SPEED_FULL,          /* usb 1.1 */
1142         USB_SPEED_HIGH,                         /* usb 2.0 */
1143         USB_SPEED_WIRELESS,                     /* wireless (usb 2.5) */
1144         USB_SPEED_SUPER,                        /* usb 3.0 */
1145         USB_SPEED_SUPER_PLUS,                   /* usb 3.1 */
1146 };
1147 
1148 
1149 enum usb_device_state {
1150         /* NOTATTACHED isn't in the USB spec, and this state acts
1151          * the same as ATTACHED ... but it's clearer this way.
1152          */
1153         USB_STATE_NOTATTACHED = 0,
1154 
1155         /* chapter 9 and authentication (wireless) device states */
1156         USB_STATE_ATTACHED,
1157         USB_STATE_POWERED,                      /* wired */
1158         USB_STATE_RECONNECTING,                 /* auth */
1159         USB_STATE_UNAUTHENTICATED,              /* auth */
1160         USB_STATE_DEFAULT,                      /* limited function */
1161         USB_STATE_ADDRESS,
1162         USB_STATE_CONFIGURED,                   /* most functions */
1163 
1164         USB_STATE_SUSPENDED
1165 
1166         /* NOTE:  there are actually four different SUSPENDED
1167          * states, returning to POWERED, DEFAULT, ADDRESS, or
1168          * CONFIGURED respectively when SOF tokens flow again.
1169          * At this level there's no difference between L1 and L2
1170          * suspend states.  (L2 being original USB 1.1 suspend.)
1171          */
1172 };
1173 
1174 enum usb3_link_state {
1175         USB3_LPM_U0 = 0,
1176         USB3_LPM_U1,
1177         USB3_LPM_U2,
1178         USB3_LPM_U3
1179 };
1180 
1181 /*
1182  * A U1 timeout of 0x0 means the parent hub will reject any transitions to U1.
1183  * 0xff means the parent hub will accept transitions to U1, but will not
1184  * initiate a transition.
1185  *
1186  * A U1 timeout of 0x1 to 0x7F also causes the hub to initiate a transition to
1187  * U1 after that many microseconds.  Timeouts of 0x80 to 0xFE are reserved
1188  * values.
1189  *
1190  * A U2 timeout of 0x0 means the parent hub will reject any transitions to U2.
1191  * 0xff means the parent hub will accept transitions to U2, but will not
1192  * initiate a transition.
1193  *
1194  * A U2 timeout of 0x1 to 0xFE also causes the hub to initiate a transition to
1195  * U2 after N*256 microseconds.  Therefore a U2 timeout value of 0x1 means a U2
1196  * idle timer of 256 microseconds, 0x2 means 512 microseconds, 0xFE means
1197  * 65.024ms.
1198  */
1199 #define USB3_LPM_DISABLED               0x0
1200 #define USB3_LPM_U1_MAX_TIMEOUT         0x7F
1201 #define USB3_LPM_U2_MAX_TIMEOUT         0xFE
1202 #define USB3_LPM_DEVICE_INITIATED       0xFF
1203 
1204 struct usb_set_sel_req {
1205         __u8    u1_sel;
1206         __u8    u1_pel;
1207         __le16  u2_sel;
1208         __le16  u2_pel;
1209 } __attribute__ ((packed));
1210 
1211 /*
1212  * The Set System Exit Latency control transfer provides one byte each for
1213  * U1 SEL and U1 PEL, so the max exit latency is 0xFF.  U2 SEL and U2 PEL each
1214  * are two bytes long.
1215  */
1216 #define USB3_LPM_MAX_U1_SEL_PEL         0xFF
1217 #define USB3_LPM_MAX_U2_SEL_PEL         0xFFFF
1218 
1219 /*-------------------------------------------------------------------------*/
1220 
1221 /*
1222  * As per USB compliance update, a device that is actively drawing
1223  * more than 100mA from USB must report itself as bus-powered in
1224  * the GetStatus(DEVICE) call.
1225  * http://compliance.usb.org/index.asp?UpdateFile=Electrical&Format=Standard#34
1226  */
1227 #define USB_SELF_POWER_VBUS_MAX_DRAW            100
1228 
1229 #endif /* _UAPI__LINUX_USB_CH9_H */

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