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 spec (now defunct). 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 * Note all descriptors are declared '__attribute__((packed))' so that: 18 * 19 * [a] they never get padded, either internally (USB spec writers 20 * probably handled that) or externally; 21 * 22 * [b] so that accessing bigger-than-a-bytes fields will never 23 * generate bus errors on any platform, even when the location of 24 * its descriptor inside a bundle isn't "naturally aligned", and 25 * 26 * [c] for consistency, removing all doubt even when it appears to 27 * someone that the two other points are non-issues for that 28 * particular descriptor type. 29 */ 30 31 #ifndef _UAPI__LINUX_USB_CH9_H 32 #define _UAPI__LINUX_USB_CH9_H 33 34 #include <linux/types.h> /* __u8 etc */ 35 #include <asm/byteorder.h> /* le16_to_cpu */ 36 37 /*-------------------------------------------------------------------------*/ 38 39 /* CONTROL REQUEST SUPPORT */ 40 41 /* 42 * USB directions 43 * 44 * This bit flag is used in endpoint descriptors' bEndpointAddress field. 45 * It's also one of three fields in control requests bRequestType. 46 */ 47 #define USB_DIR_OUT 0 /* to device */ 48 #define USB_DIR_IN 0x80 /* to host */ 49 50 /* 51 * USB types, the second of three bRequestType fields 52 */ 53 #define USB_TYPE_MASK (0x03 << 5) 54 #define USB_TYPE_STANDARD (0x00 << 5) 55 #define USB_TYPE_CLASS (0x01 << 5) 56 #define USB_TYPE_VENDOR (0x02 << 5) 57 #define USB_TYPE_RESERVED (0x03 << 5) 58 59 /* 60 * USB recipients, the third of three bRequestType fields 61 */ 62 #define USB_RECIP_MASK 0x1f 63 #define USB_RECIP_DEVICE 0x00 64 #define USB_RECIP_INTERFACE 0x01 65 #define USB_RECIP_ENDPOINT 0x02 66 #define USB_RECIP_OTHER 0x03 67 /* From Wireless USB 1.0 */ 68 #define USB_RECIP_PORT 0x04 69 #define USB_RECIP_RPIPE 0x05 70 71 /* 72 * Standard requests, for the bRequest field of a SETUP packet. 73 * 74 * These are qualified by the bRequestType field, so that for example 75 * TYPE_CLASS or TYPE_VENDOR specific feature flags could be retrieved 76 * by a GET_STATUS request. 77 */ 78 #define USB_REQ_GET_STATUS 0x00 79 #define USB_REQ_CLEAR_FEATURE 0x01 80 #define USB_REQ_SET_FEATURE 0x03 81 #define USB_REQ_SET_ADDRESS 0x05 82 #define USB_REQ_GET_DESCRIPTOR 0x06 83 #define USB_REQ_SET_DESCRIPTOR 0x07 84 #define USB_REQ_GET_CONFIGURATION 0x08 85 #define USB_REQ_SET_CONFIGURATION 0x09 86 #define USB_REQ_GET_INTERFACE 0x0A 87 #define USB_REQ_SET_INTERFACE 0x0B 88 #define USB_REQ_SYNCH_FRAME 0x0C 89 #define USB_REQ_SET_SEL 0x30 90 #define USB_REQ_SET_ISOCH_DELAY 0x31 91 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 105 106 /* specific requests for USB Power Delivery */ 107 #define USB_REQ_GET_PARTNER_PDO 20 108 #define USB_REQ_GET_BATTERY_STATUS 21 109 #define USB_REQ_SET_PDO 22 110 #define USB_REQ_GET_VDM 23 111 #define USB_REQ_SEND_VDM 24 112 113 /* The Link Power Management (LPM) ECN defines USB_REQ_TEST_AND_SET command, 114 * used by hubs to put ports into a new L1 suspend state, except that it 115 * forgot to define its number ... 116 */ 117 118 /* 119 * USB feature flags are written using USB_REQ_{CLEAR,SET}_FEATURE, and 120 * are read as a bit array returned by USB_REQ_GET_STATUS. (So there 121 * are at most sixteen features of each type.) Hubs may also support a 122 * new USB_REQ_TEST_AND_SET_FEATURE to put ports into L1 suspend. 123 */ 124 #define USB_DEVICE_SELF_POWERED 0 /* (read only) */ 125 #define USB_DEVICE_REMOTE_WAKEUP 1 /* dev may initiate wakeup */ 126 #define USB_DEVICE_TEST_MODE 2 /* (wired high speed only) */ 127 #define USB_DEVICE_BATTERY 2 /* (wireless) */ 128 #define USB_DEVICE_B_HNP_ENABLE 3 /* (otg) dev may initiate HNP */ 129 #define USB_DEVICE_WUSB_DEVICE 3 /* (wireless)*/ 130 #define USB_DEVICE_A_HNP_SUPPORT 4 /* (otg) RH port supports HNP */ 131 #define USB_DEVICE_A_ALT_HNP_SUPPORT 5 /* (otg) other RH port does */ 132 #define USB_DEVICE_DEBUG_MODE 6 /* (special devices only) */ 133 134 /* 135 * Test Mode Selectors 136 * See USB 2.0 spec Table 9-7 137 */ 138 #define USB_TEST_J 1 139 #define USB_TEST_K 2 140 #define USB_TEST_SE0_NAK 3 141 #define USB_TEST_PACKET 4 142 #define USB_TEST_FORCE_ENABLE 5 143 144 /* Status Type */ 145 #define USB_STATUS_TYPE_STANDARD 0 146 #define USB_STATUS_TYPE_PTM 1 147 148 /* 149 * New Feature Selectors as added by USB 3.0 150 * See USB 3.0 spec Table 9-7 151 */ 152 #define USB_DEVICE_U1_ENABLE 48 /* dev may initiate U1 transition */ 153 #define USB_DEVICE_U2_ENABLE 49 /* dev may initiate U2 transition */ 154 #define USB_DEVICE_LTM_ENABLE 50 /* dev may send LTM */ 155 #define USB_INTRF_FUNC_SUSPEND 0 /* function suspend */ 156 157 #define USB_INTR_FUNC_SUSPEND_OPT_MASK 0xFF00 158 /* 159 * Suspend Options, Table 9-8 USB 3.0 spec 160 */ 161 #define USB_INTRF_FUNC_SUSPEND_LP (1 << (8 + 0)) 162 #define USB_INTRF_FUNC_SUSPEND_RW (1 << (8 + 1)) 163 164 /* 165 * Interface status, Figure 9-5 USB 3.0 spec 166 */ 167 #define USB_INTRF_STAT_FUNC_RW_CAP 1 168 #define USB_INTRF_STAT_FUNC_RW 2 169 170 #define USB_ENDPOINT_HALT 0 /* IN/OUT will STALL */ 171 172 /* Bit array elements as returned by the USB_REQ_GET_STATUS request. */ 173 #define USB_DEV_STAT_U1_ENABLED 2 /* transition into U1 state */ 174 #define USB_DEV_STAT_U2_ENABLED 3 /* transition into U2 state */ 175 #define USB_DEV_STAT_LTM_ENABLED 4 /* Latency tolerance messages */ 176 177 /* 178 * Feature selectors from Table 9-8 USB Power Delivery spec 179 */ 180 #define USB_DEVICE_BATTERY_WAKE_MASK 40 181 #define USB_DEVICE_OS_IS_PD_AWARE 41 182 #define USB_DEVICE_POLICY_MODE 42 183 #define USB_PORT_PR_SWAP 43 184 #define USB_PORT_GOTO_MIN 44 185 #define USB_PORT_RETURN_POWER 45 186 #define USB_PORT_ACCEPT_PD_REQUEST 46 187 #define USB_PORT_REJECT_PD_REQUEST 47 188 #define USB_PORT_PORT_PD_RESET 48 189 #define USB_PORT_C_PORT_PD_CHANGE 49 190 #define USB_PORT_CABLE_PD_RESET 50 191 #define USB_DEVICE_CHARGING_POLICY 54 192 193 /** 194 * struct usb_ctrlrequest - SETUP data for a USB device control request 195 * @bRequestType: matches the USB bmRequestType field 196 * @bRequest: matches the USB bRequest field 197 * @wValue: matches the USB wValue field (le16 byte order) 198 * @wIndex: matches the USB wIndex field (le16 byte order) 199 * @wLength: matches the USB wLength field (le16 byte order) 200 * 201 * This structure is used to send control requests to a USB device. It matches 202 * the different fields of the USB 2.0 Spec section 9.3, table 9-2. See the 203 * USB spec for a fuller description of the different fields, and what they are 204 * used for. 205 * 206 * Note that the driver for any interface can issue control requests. 207 * For most devices, interfaces don't coordinate with each other, so 208 * such requests may be made at any time. 209 */ 210 struct usb_ctrlrequest { 211 __u8 bRequestType; 212 __u8 bRequest; 213 __le16 wValue; 214 __le16 wIndex; 215 __le16 wLength; 216 } __attribute__ ((packed)); 217 218 /*-------------------------------------------------------------------------*/ 219 220 /* 221 * STANDARD DESCRIPTORS ... as returned by GET_DESCRIPTOR, or 222 * (rarely) accepted by SET_DESCRIPTOR. 223 * 224 * Note that all multi-byte values here are encoded in little endian 225 * byte order "on the wire". Within the kernel and when exposed 226 * through the Linux-USB APIs, they are not converted to cpu byte 227 * order; it is the responsibility of the client code to do this. 228 * The single exception is when device and configuration descriptors (but 229 * not other descriptors) are read from character devices 230 * (i.e. /dev/bus/usb/BBB/DDD); 231 * in this case the fields are converted to host endianness by the kernel. 232 */ 233 234 /* 235 * Descriptor types ... USB 2.0 spec table 9.5 236 */ 237 #define USB_DT_DEVICE 0x01 238 #define USB_DT_CONFIG 0x02 239 #define USB_DT_STRING 0x03 240 #define USB_DT_INTERFACE 0x04 241 #define USB_DT_ENDPOINT 0x05 242 #define USB_DT_DEVICE_QUALIFIER 0x06 243 #define USB_DT_OTHER_SPEED_CONFIG 0x07 244 #define USB_DT_INTERFACE_POWER 0x08 245 /* these are from a minor usb 2.0 revision (ECN) */ 246 #define USB_DT_OTG 0x09 247 #define USB_DT_DEBUG 0x0a 248 #define USB_DT_INTERFACE_ASSOCIATION 0x0b 249 /* these are from the Wireless USB spec */ 250 #define USB_DT_SECURITY 0x0c 251 #define USB_DT_KEY 0x0d 252 #define USB_DT_ENCRYPTION_TYPE 0x0e 253 #define USB_DT_BOS 0x0f 254 #define USB_DT_DEVICE_CAPABILITY 0x10 255 #define USB_DT_WIRELESS_ENDPOINT_COMP 0x11 256 #define USB_DT_WIRE_ADAPTER 0x21 257 /* From USB Device Firmware Upgrade Specification, Revision 1.1 */ 258 #define USB_DT_DFU_FUNCTIONAL 0x21 259 /* these are from the Wireless USB spec */ 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_SUBCLASS_DFU 0x01 336 337 #define USB_CLASS_VENDOR_SPEC 0xff 338 #define USB_SUBCLASS_VENDOR_SPEC 0xff 339 340 /*-------------------------------------------------------------------------*/ 341 342 /* USB_DT_CONFIG: Configuration descriptor information. 343 * 344 * USB_DT_OTHER_SPEED_CONFIG is the same descriptor, except that the 345 * descriptor type is different. Highspeed-capable devices can look 346 * different depending on what speed they're currently running. Only 347 * devices with a USB_DT_DEVICE_QUALIFIER have any OTHER_SPEED_CONFIG 348 * descriptors. 349 */ 350 struct usb_config_descriptor { 351 __u8 bLength; 352 __u8 bDescriptorType; 353 354 __le16 wTotalLength; 355 __u8 bNumInterfaces; 356 __u8 bConfigurationValue; 357 __u8 iConfiguration; 358 __u8 bmAttributes; 359 __u8 bMaxPower; 360 } __attribute__ ((packed)); 361 362 #define USB_DT_CONFIG_SIZE 9 363 364 /* from config descriptor bmAttributes */ 365 #define USB_CONFIG_ATT_ONE (1 << 7) /* must be set */ 366 #define USB_CONFIG_ATT_SELFPOWER (1 << 6) /* self powered */ 367 #define USB_CONFIG_ATT_WAKEUP (1 << 5) /* can wakeup */ 368 #define USB_CONFIG_ATT_BATTERY (1 << 4) /* battery powered */ 369 370 /*-------------------------------------------------------------------------*/ 371 372 /* USB String descriptors can contain at most 126 characters. */ 373 #define USB_MAX_STRING_LEN 126 374 375 /* USB_DT_STRING: String descriptor */ 376 struct usb_string_descriptor { 377 __u8 bLength; 378 __u8 bDescriptorType; 379 380 union { 381 __le16 legacy_padding; 382 __DECLARE_FLEX_ARRAY(__le16, wData); /* UTF-16LE encoded */ 383 }; 384 } __attribute__ ((packed)); 385 386 /* note that "string" zero is special, it holds language codes that 387 * the device supports, not Unicode characters. 388 */ 389 390 /*-------------------------------------------------------------------------*/ 391 392 /* USB_DT_INTERFACE: Interface descriptor */ 393 struct usb_interface_descriptor { 394 __u8 bLength; 395 __u8 bDescriptorType; 396 397 __u8 bInterfaceNumber; 398 __u8 bAlternateSetting; 399 __u8 bNumEndpoints; 400 __u8 bInterfaceClass; 401 __u8 bInterfaceSubClass; 402 __u8 bInterfaceProtocol; 403 __u8 iInterface; 404 } __attribute__ ((packed)); 405 406 #define USB_DT_INTERFACE_SIZE 9 407 408 /*-------------------------------------------------------------------------*/ 409 410 /* USB_DT_ENDPOINT: Endpoint descriptor */ 411 struct usb_endpoint_descriptor { 412 __u8 bLength; 413 __u8 bDescriptorType; 414 415 __u8 bEndpointAddress; 416 __u8 bmAttributes; 417 __le16 wMaxPacketSize; 418 __u8 bInterval; 419 420 /* NOTE: these two are _only_ in audio endpoints. */ 421 /* use USB_DT_ENDPOINT*_SIZE in bLength, not sizeof. */ 422 __u8 bRefresh; 423 __u8 bSynchAddress; 424 } __attribute__ ((packed)); 425 426 #define USB_DT_ENDPOINT_SIZE 7 427 #define USB_DT_ENDPOINT_AUDIO_SIZE 9 /* Audio extension */ 428 429 430 /* 431 * Endpoints 432 */ 433 #define USB_ENDPOINT_NUMBER_MASK 0x0f /* in bEndpointAddress */ 434 #define USB_ENDPOINT_DIR_MASK 0x80 435 436 #define USB_ENDPOINT_XFERTYPE_MASK 0x03 /* in bmAttributes */ 437 #define USB_ENDPOINT_XFER_CONTROL 0 438 #define USB_ENDPOINT_XFER_ISOC 1 439 #define USB_ENDPOINT_XFER_BULK 2 440 #define USB_ENDPOINT_XFER_INT 3 441 #define USB_ENDPOINT_MAX_ADJUSTABLE 0x80 442 443 #define USB_ENDPOINT_MAXP_MASK 0x07ff 444 #define USB_EP_MAXP_MULT_SHIFT 11 445 #define USB_EP_MAXP_MULT_MASK (3 << USB_EP_MAXP_MULT_SHIFT) 446 #define USB_EP_MAXP_MULT(m) \ 447 (((m) & USB_EP_MAXP_MULT_MASK) >> USB_EP_MAXP_MULT_SHIFT) 448 449 /* The USB 3.0 spec redefines bits 5:4 of bmAttributes as interrupt ep type. */ 450 #define USB_ENDPOINT_INTRTYPE 0x30 451 #define USB_ENDPOINT_INTR_PERIODIC (0 << 4) 452 #define USB_ENDPOINT_INTR_NOTIFICATION (1 << 4) 453 454 #define USB_ENDPOINT_SYNCTYPE 0x0c 455 #define USB_ENDPOINT_SYNC_NONE (0 << 2) 456 #define USB_ENDPOINT_SYNC_ASYNC (1 << 2) 457 #define USB_ENDPOINT_SYNC_ADAPTIVE (2 << 2) 458 #define USB_ENDPOINT_SYNC_SYNC (3 << 2) 459 460 #define USB_ENDPOINT_USAGE_MASK 0x30 461 #define USB_ENDPOINT_USAGE_DATA 0x00 462 #define USB_ENDPOINT_USAGE_FEEDBACK 0x10 463 #define USB_ENDPOINT_USAGE_IMPLICIT_FB 0x20 /* Implicit feedback Data endpoint */ 464 465 /*-------------------------------------------------------------------------*/ 466 467 /** 468 * usb_endpoint_num - get the endpoint's number 469 * @epd: endpoint to be checked 470 * 471 * Returns @epd's number: 0 to 15. 472 */ usb_endpoint_num(const struct usb_endpoint_descriptor * epd)473 static inline int usb_endpoint_num(const struct usb_endpoint_descriptor *epd) 474 { 475 return epd->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; 476 } 477 478 /** 479 * usb_endpoint_type - get the endpoint's transfer type 480 * @epd: endpoint to be checked 481 * 482 * Returns one of USB_ENDPOINT_XFER_{CONTROL, ISOC, BULK, INT} according 483 * to @epd's transfer type. 484 */ usb_endpoint_type(const struct usb_endpoint_descriptor * epd)485 static inline int usb_endpoint_type(const struct usb_endpoint_descriptor *epd) 486 { 487 return epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK; 488 } 489 490 /** 491 * usb_endpoint_dir_in - check if the endpoint has IN direction 492 * @epd: endpoint to be checked 493 * 494 * Returns true if the endpoint is of type IN, otherwise it returns false. 495 */ usb_endpoint_dir_in(const struct usb_endpoint_descriptor * epd)496 static inline int usb_endpoint_dir_in(const struct usb_endpoint_descriptor *epd) 497 { 498 return ((epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN); 499 } 500 501 /** 502 * usb_endpoint_dir_out - check if the endpoint has OUT direction 503 * @epd: endpoint to be checked 504 * 505 * Returns true if the endpoint is of type OUT, otherwise it returns false. 506 */ usb_endpoint_dir_out(const struct usb_endpoint_descriptor * epd)507 static inline int usb_endpoint_dir_out( 508 const struct usb_endpoint_descriptor *epd) 509 { 510 return ((epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT); 511 } 512 513 /** 514 * usb_endpoint_xfer_bulk - check if the endpoint has bulk transfer type 515 * @epd: endpoint to be checked 516 * 517 * Returns true if the endpoint is of type bulk, otherwise it returns false. 518 */ usb_endpoint_xfer_bulk(const struct usb_endpoint_descriptor * epd)519 static inline int usb_endpoint_xfer_bulk( 520 const struct usb_endpoint_descriptor *epd) 521 { 522 return ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == 523 USB_ENDPOINT_XFER_BULK); 524 } 525 526 /** 527 * usb_endpoint_xfer_control - check if the endpoint has control transfer type 528 * @epd: endpoint to be checked 529 * 530 * Returns true if the endpoint is of type control, otherwise it returns false. 531 */ usb_endpoint_xfer_control(const struct usb_endpoint_descriptor * epd)532 static inline int usb_endpoint_xfer_control( 533 const struct usb_endpoint_descriptor *epd) 534 { 535 return ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == 536 USB_ENDPOINT_XFER_CONTROL); 537 } 538 539 /** 540 * usb_endpoint_xfer_int - check if the endpoint has interrupt transfer type 541 * @epd: endpoint to be checked 542 * 543 * Returns true if the endpoint is of type interrupt, otherwise it returns 544 * false. 545 */ usb_endpoint_xfer_int(const struct usb_endpoint_descriptor * epd)546 static inline int usb_endpoint_xfer_int( 547 const struct usb_endpoint_descriptor *epd) 548 { 549 return ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == 550 USB_ENDPOINT_XFER_INT); 551 } 552 553 /** 554 * usb_endpoint_xfer_isoc - check if the endpoint has isochronous transfer type 555 * @epd: endpoint to be checked 556 * 557 * Returns true if the endpoint is of type isochronous, otherwise it returns 558 * false. 559 */ usb_endpoint_xfer_isoc(const struct usb_endpoint_descriptor * epd)560 static inline int usb_endpoint_xfer_isoc( 561 const struct usb_endpoint_descriptor *epd) 562 { 563 return ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == 564 USB_ENDPOINT_XFER_ISOC); 565 } 566 567 /** 568 * usb_endpoint_is_bulk_in - check if the endpoint is bulk IN 569 * @epd: endpoint to be checked 570 * 571 * Returns true if the endpoint has bulk transfer type and IN direction, 572 * otherwise it returns false. 573 */ usb_endpoint_is_bulk_in(const struct usb_endpoint_descriptor * epd)574 static inline int usb_endpoint_is_bulk_in( 575 const struct usb_endpoint_descriptor *epd) 576 { 577 return usb_endpoint_xfer_bulk(epd) && usb_endpoint_dir_in(epd); 578 } 579 580 /** 581 * usb_endpoint_is_bulk_out - check if the endpoint is bulk OUT 582 * @epd: endpoint to be checked 583 * 584 * Returns true if the endpoint has bulk transfer type and OUT direction, 585 * otherwise it returns false. 586 */ usb_endpoint_is_bulk_out(const struct usb_endpoint_descriptor * epd)587 static inline int usb_endpoint_is_bulk_out( 588 const struct usb_endpoint_descriptor *epd) 589 { 590 return usb_endpoint_xfer_bulk(epd) && usb_endpoint_dir_out(epd); 591 } 592 593 /** 594 * usb_endpoint_is_int_in - check if the endpoint is interrupt IN 595 * @epd: endpoint to be checked 596 * 597 * Returns true if the endpoint has interrupt transfer type and IN direction, 598 * otherwise it returns false. 599 */ usb_endpoint_is_int_in(const struct usb_endpoint_descriptor * epd)600 static inline int usb_endpoint_is_int_in( 601 const struct usb_endpoint_descriptor *epd) 602 { 603 return usb_endpoint_xfer_int(epd) && usb_endpoint_dir_in(epd); 604 } 605 606 /** 607 * usb_endpoint_is_int_out - check if the endpoint is interrupt OUT 608 * @epd: endpoint to be checked 609 * 610 * Returns true if the endpoint has interrupt transfer type and OUT direction, 611 * otherwise it returns false. 612 */ usb_endpoint_is_int_out(const struct usb_endpoint_descriptor * epd)613 static inline int usb_endpoint_is_int_out( 614 const struct usb_endpoint_descriptor *epd) 615 { 616 return usb_endpoint_xfer_int(epd) && usb_endpoint_dir_out(epd); 617 } 618 619 /** 620 * usb_endpoint_is_isoc_in - check if the endpoint is isochronous IN 621 * @epd: endpoint to be checked 622 * 623 * Returns true if the endpoint has isochronous transfer type and IN direction, 624 * otherwise it returns false. 625 */ usb_endpoint_is_isoc_in(const struct usb_endpoint_descriptor * epd)626 static inline int usb_endpoint_is_isoc_in( 627 const struct usb_endpoint_descriptor *epd) 628 { 629 return usb_endpoint_xfer_isoc(epd) && usb_endpoint_dir_in(epd); 630 } 631 632 /** 633 * usb_endpoint_is_isoc_out - check if the endpoint is isochronous OUT 634 * @epd: endpoint to be checked 635 * 636 * Returns true if the endpoint has isochronous transfer type and OUT direction, 637 * otherwise it returns false. 638 */ usb_endpoint_is_isoc_out(const struct usb_endpoint_descriptor * epd)639 static inline int usb_endpoint_is_isoc_out( 640 const struct usb_endpoint_descriptor *epd) 641 { 642 return usb_endpoint_xfer_isoc(epd) && usb_endpoint_dir_out(epd); 643 } 644 645 /** 646 * usb_endpoint_maxp - get endpoint's max packet size 647 * @epd: endpoint to be checked 648 * 649 * Returns @epd's max packet bits [10:0] 650 */ usb_endpoint_maxp(const struct usb_endpoint_descriptor * epd)651 static inline int usb_endpoint_maxp(const struct usb_endpoint_descriptor *epd) 652 { 653 return __le16_to_cpu(epd->wMaxPacketSize) & USB_ENDPOINT_MAXP_MASK; 654 } 655 656 /** 657 * usb_endpoint_maxp_mult - get endpoint's transactional opportunities 658 * @epd: endpoint to be checked 659 * 660 * Return @epd's wMaxPacketSize[12:11] + 1 661 */ 662 static inline int usb_endpoint_maxp_mult(const struct usb_endpoint_descriptor * epd)663 usb_endpoint_maxp_mult(const struct usb_endpoint_descriptor *epd) 664 { 665 int maxp = __le16_to_cpu(epd->wMaxPacketSize); 666 667 return USB_EP_MAXP_MULT(maxp) + 1; 668 } 669 usb_endpoint_interrupt_type(const struct usb_endpoint_descriptor * epd)670 static inline int usb_endpoint_interrupt_type( 671 const struct usb_endpoint_descriptor *epd) 672 { 673 return epd->bmAttributes & USB_ENDPOINT_INTRTYPE; 674 } 675 676 /*-------------------------------------------------------------------------*/ 677 678 /* USB_DT_SSP_ISOC_ENDPOINT_COMP: SuperSpeedPlus Isochronous Endpoint Companion 679 * descriptor 680 */ 681 struct usb_ssp_isoc_ep_comp_descriptor { 682 __u8 bLength; 683 __u8 bDescriptorType; 684 __le16 wReseved; 685 __le32 dwBytesPerInterval; 686 } __attribute__ ((packed)); 687 688 #define USB_DT_SSP_ISOC_EP_COMP_SIZE 8 689 690 /*-------------------------------------------------------------------------*/ 691 692 /* USB_DT_SS_ENDPOINT_COMP: SuperSpeed Endpoint Companion descriptor */ 693 struct usb_ss_ep_comp_descriptor { 694 __u8 bLength; 695 __u8 bDescriptorType; 696 697 __u8 bMaxBurst; 698 __u8 bmAttributes; 699 __le16 wBytesPerInterval; 700 } __attribute__ ((packed)); 701 702 #define USB_DT_SS_EP_COMP_SIZE 6 703 704 /* Bits 4:0 of bmAttributes if this is a bulk endpoint */ 705 static inline int usb_ss_max_streams(const struct usb_ss_ep_comp_descriptor * comp)706 usb_ss_max_streams(const struct usb_ss_ep_comp_descriptor *comp) 707 { 708 int max_streams; 709 710 if (!comp) 711 return 0; 712 713 max_streams = comp->bmAttributes & 0x1f; 714 715 if (!max_streams) 716 return 0; 717 718 max_streams = 1 << max_streams; 719 720 return max_streams; 721 } 722 723 /* Bits 1:0 of bmAttributes if this is an isoc endpoint */ 724 #define USB_SS_MULT(p) (1 + ((p) & 0x3)) 725 /* Bit 7 of bmAttributes if a SSP isoc endpoint companion descriptor exists */ 726 #define USB_SS_SSP_ISOC_COMP(p) ((p) & (1 << 7)) 727 728 /*-------------------------------------------------------------------------*/ 729 730 /* USB_DT_DEVICE_QUALIFIER: Device Qualifier descriptor */ 731 struct usb_qualifier_descriptor { 732 __u8 bLength; 733 __u8 bDescriptorType; 734 735 __le16 bcdUSB; 736 __u8 bDeviceClass; 737 __u8 bDeviceSubClass; 738 __u8 bDeviceProtocol; 739 __u8 bMaxPacketSize0; 740 __u8 bNumConfigurations; 741 __u8 bRESERVED; 742 } __attribute__ ((packed)); 743 744 745 /*-------------------------------------------------------------------------*/ 746 747 /* USB_DT_OTG (from OTG 1.0a supplement) */ 748 struct usb_otg_descriptor { 749 __u8 bLength; 750 __u8 bDescriptorType; 751 752 __u8 bmAttributes; /* support for HNP, SRP, etc */ 753 } __attribute__ ((packed)); 754 755 /* USB_DT_OTG (from OTG 2.0 supplement) */ 756 struct usb_otg20_descriptor { 757 __u8 bLength; 758 __u8 bDescriptorType; 759 760 __u8 bmAttributes; /* support for HNP, SRP and ADP, etc */ 761 __le16 bcdOTG; /* OTG and EH supplement release number 762 * in binary-coded decimal(i.e. 2.0 is 0200H) 763 */ 764 } __attribute__ ((packed)); 765 766 /* from usb_otg_descriptor.bmAttributes */ 767 #define USB_OTG_SRP (1 << 0) 768 #define USB_OTG_HNP (1 << 1) /* swap host/device roles */ 769 #define USB_OTG_ADP (1 << 2) /* support ADP */ 770 /* OTG 3.0 */ 771 #define USB_OTG_RSP (1 << 3) /* support RSP */ 772 773 #define OTG_STS_SELECTOR 0xF000 /* OTG status selector */ 774 /*-------------------------------------------------------------------------*/ 775 776 /* USB_DT_DEBUG: for special highspeed devices, replacing serial console */ 777 struct usb_debug_descriptor { 778 __u8 bLength; 779 __u8 bDescriptorType; 780 781 /* bulk endpoints with 8 byte maxpacket */ 782 __u8 bDebugInEndpoint; 783 __u8 bDebugOutEndpoint; 784 } __attribute__((packed)); 785 786 /*-------------------------------------------------------------------------*/ 787 788 /* USB_DT_INTERFACE_ASSOCIATION: groups interfaces */ 789 struct usb_interface_assoc_descriptor { 790 __u8 bLength; 791 __u8 bDescriptorType; 792 793 __u8 bFirstInterface; 794 __u8 bInterfaceCount; 795 __u8 bFunctionClass; 796 __u8 bFunctionSubClass; 797 __u8 bFunctionProtocol; 798 __u8 iFunction; 799 } __attribute__ ((packed)); 800 801 #define USB_DT_INTERFACE_ASSOCIATION_SIZE 8 802 803 /*-------------------------------------------------------------------------*/ 804 805 /* USB_DT_SECURITY: group of wireless security descriptors, including 806 * encryption types available for setting up a CC/association. 807 */ 808 struct usb_security_descriptor { 809 __u8 bLength; 810 __u8 bDescriptorType; 811 812 __le16 wTotalLength; 813 __u8 bNumEncryptionTypes; 814 } __attribute__((packed)); 815 816 /*-------------------------------------------------------------------------*/ 817 818 /* USB_DT_KEY: used with {GET,SET}_SECURITY_DATA; only public keys 819 * may be retrieved. 820 */ 821 struct usb_key_descriptor { 822 __u8 bLength; 823 __u8 bDescriptorType; 824 825 __u8 tTKID[3]; 826 __u8 bReserved; 827 __u8 bKeyData[]; 828 } __attribute__((packed)); 829 830 /*-------------------------------------------------------------------------*/ 831 832 /* USB_DT_ENCRYPTION_TYPE: bundled in DT_SECURITY groups */ 833 struct usb_encryption_descriptor { 834 __u8 bLength; 835 __u8 bDescriptorType; 836 837 __u8 bEncryptionType; 838 #define USB_ENC_TYPE_UNSECURE 0 839 #define USB_ENC_TYPE_WIRED 1 /* non-wireless mode */ 840 #define USB_ENC_TYPE_CCM_1 2 /* aes128/cbc session */ 841 #define USB_ENC_TYPE_RSA_1 3 /* rsa3072/sha1 auth */ 842 __u8 bEncryptionValue; /* use in SET_ENCRYPTION */ 843 __u8 bAuthKeyIndex; 844 } __attribute__((packed)); 845 846 847 /*-------------------------------------------------------------------------*/ 848 849 /* USB_DT_BOS: group of device-level capabilities */ 850 struct usb_bos_descriptor { 851 __u8 bLength; 852 __u8 bDescriptorType; 853 854 __le16 wTotalLength; 855 __u8 bNumDeviceCaps; 856 } __attribute__((packed)); 857 858 #define USB_DT_BOS_SIZE 5 859 /*-------------------------------------------------------------------------*/ 860 861 /* USB_DT_DEVICE_CAPABILITY: grouped with BOS */ 862 struct usb_dev_cap_header { 863 __u8 bLength; 864 __u8 bDescriptorType; 865 __u8 bDevCapabilityType; 866 } __attribute__((packed)); 867 868 #define USB_CAP_TYPE_WIRELESS_USB 1 869 870 struct usb_wireless_cap_descriptor { /* Ultra Wide Band */ 871 __u8 bLength; 872 __u8 bDescriptorType; 873 __u8 bDevCapabilityType; 874 875 __u8 bmAttributes; 876 #define USB_WIRELESS_P2P_DRD (1 << 1) 877 #define USB_WIRELESS_BEACON_MASK (3 << 2) 878 #define USB_WIRELESS_BEACON_SELF (1 << 2) 879 #define USB_WIRELESS_BEACON_DIRECTED (2 << 2) 880 #define USB_WIRELESS_BEACON_NONE (3 << 2) 881 __le16 wPHYRates; /* bit rates, Mbps */ 882 #define USB_WIRELESS_PHY_53 (1 << 0) /* always set */ 883 #define USB_WIRELESS_PHY_80 (1 << 1) 884 #define USB_WIRELESS_PHY_107 (1 << 2) /* always set */ 885 #define USB_WIRELESS_PHY_160 (1 << 3) 886 #define USB_WIRELESS_PHY_200 (1 << 4) /* always set */ 887 #define USB_WIRELESS_PHY_320 (1 << 5) 888 #define USB_WIRELESS_PHY_400 (1 << 6) 889 #define USB_WIRELESS_PHY_480 (1 << 7) 890 __u8 bmTFITXPowerInfo; /* TFI power levels */ 891 __u8 bmFFITXPowerInfo; /* FFI power levels */ 892 __le16 bmBandGroup; 893 __u8 bReserved; 894 } __attribute__((packed)); 895 896 #define USB_DT_USB_WIRELESS_CAP_SIZE 11 897 898 /* USB 2.0 Extension descriptor */ 899 #define USB_CAP_TYPE_EXT 2 900 901 struct usb_ext_cap_descriptor { /* Link Power Management */ 902 __u8 bLength; 903 __u8 bDescriptorType; 904 __u8 bDevCapabilityType; 905 __le32 bmAttributes; 906 #define USB_LPM_SUPPORT (1 << 1) /* supports LPM */ 907 #define USB_BESL_SUPPORT (1 << 2) /* supports BESL */ 908 #define USB_BESL_BASELINE_VALID (1 << 3) /* Baseline BESL valid*/ 909 #define USB_BESL_DEEP_VALID (1 << 4) /* Deep BESL valid */ 910 #define USB_SET_BESL_BASELINE(p) (((p) & 0xf) << 8) 911 #define USB_SET_BESL_DEEP(p) (((p) & 0xf) << 12) 912 #define USB_GET_BESL_BASELINE(p) (((p) & (0xf << 8)) >> 8) 913 #define USB_GET_BESL_DEEP(p) (((p) & (0xf << 12)) >> 12) 914 } __attribute__((packed)); 915 916 #define USB_DT_USB_EXT_CAP_SIZE 7 917 918 /* 919 * SuperSpeed USB Capability descriptor: Defines the set of SuperSpeed USB 920 * specific device level capabilities 921 */ 922 #define USB_SS_CAP_TYPE 3 923 struct usb_ss_cap_descriptor { /* Link Power Management */ 924 __u8 bLength; 925 __u8 bDescriptorType; 926 __u8 bDevCapabilityType; 927 __u8 bmAttributes; 928 #define USB_LTM_SUPPORT (1 << 1) /* supports LTM */ 929 __le16 wSpeedSupported; 930 #define USB_LOW_SPEED_OPERATION (1) /* Low speed operation */ 931 #define USB_FULL_SPEED_OPERATION (1 << 1) /* Full speed operation */ 932 #define USB_HIGH_SPEED_OPERATION (1 << 2) /* High speed operation */ 933 #define USB_5GBPS_OPERATION (1 << 3) /* Operation at 5Gbps */ 934 __u8 bFunctionalitySupport; 935 __u8 bU1devExitLat; 936 __le16 bU2DevExitLat; 937 } __attribute__((packed)); 938 939 #define USB_DT_USB_SS_CAP_SIZE 10 940 941 /* 942 * Container ID Capability descriptor: Defines the instance unique ID used to 943 * identify the instance across all operating modes 944 */ 945 #define CONTAINER_ID_TYPE 4 946 struct usb_ss_container_id_descriptor { 947 __u8 bLength; 948 __u8 bDescriptorType; 949 __u8 bDevCapabilityType; 950 __u8 bReserved; 951 __u8 ContainerID[16]; /* 128-bit number */ 952 } __attribute__((packed)); 953 954 #define USB_DT_USB_SS_CONTN_ID_SIZE 20 955 956 /* 957 * Platform Device Capability descriptor: Defines platform specific device 958 * capabilities 959 */ 960 #define USB_PLAT_DEV_CAP_TYPE 5 961 struct usb_plat_dev_cap_descriptor { 962 __u8 bLength; 963 __u8 bDescriptorType; 964 __u8 bDevCapabilityType; 965 __u8 bReserved; 966 __u8 UUID[16]; 967 __u8 CapabilityData[]; 968 } __attribute__((packed)); 969 970 #define USB_DT_USB_PLAT_DEV_CAP_SIZE(capability_data_size) (20 + capability_data_size) 971 972 /* 973 * SuperSpeed Plus USB Capability descriptor: Defines the set of 974 * SuperSpeed Plus USB specific device level capabilities 975 */ 976 #define USB_SSP_CAP_TYPE 0xa 977 struct usb_ssp_cap_descriptor { 978 __u8 bLength; 979 __u8 bDescriptorType; 980 __u8 bDevCapabilityType; 981 __u8 bReserved; 982 __le32 bmAttributes; 983 #define USB_SSP_SUBLINK_SPEED_ATTRIBS (0x1f << 0) /* sublink speed entries */ 984 #define USB_SSP_SUBLINK_SPEED_IDS (0xf << 5) /* speed ID entries */ 985 __le16 wFunctionalitySupport; 986 #define USB_SSP_MIN_SUBLINK_SPEED_ATTRIBUTE_ID (0xf) 987 #define USB_SSP_MIN_RX_LANE_COUNT (0xf << 8) 988 #define USB_SSP_MIN_TX_LANE_COUNT (0xf << 12) 989 __le16 wReserved; 990 union { 991 __le32 legacy_padding; 992 /* list of sublink speed attrib entries */ 993 __DECLARE_FLEX_ARRAY(__le32, bmSublinkSpeedAttr); 994 }; 995 #define USB_SSP_SUBLINK_SPEED_SSID (0xf) /* sublink speed ID */ 996 #define USB_SSP_SUBLINK_SPEED_LSE (0x3 << 4) /* Lanespeed exponent */ 997 #define USB_SSP_SUBLINK_SPEED_LSE_BPS 0 998 #define USB_SSP_SUBLINK_SPEED_LSE_KBPS 1 999 #define USB_SSP_SUBLINK_SPEED_LSE_MBPS 2 1000 #define USB_SSP_SUBLINK_SPEED_LSE_GBPS 3 1001 1002 #define USB_SSP_SUBLINK_SPEED_ST (0x3 << 6) /* Sublink type */ 1003 #define USB_SSP_SUBLINK_SPEED_ST_SYM_RX 0 1004 #define USB_SSP_SUBLINK_SPEED_ST_ASYM_RX 1 1005 #define USB_SSP_SUBLINK_SPEED_ST_SYM_TX 2 1006 #define USB_SSP_SUBLINK_SPEED_ST_ASYM_TX 3 1007 1008 #define USB_SSP_SUBLINK_SPEED_RSVD (0x3f << 8) /* Reserved */ 1009 #define USB_SSP_SUBLINK_SPEED_LP (0x3 << 14) /* Link protocol */ 1010 #define USB_SSP_SUBLINK_SPEED_LP_SS 0 1011 #define USB_SSP_SUBLINK_SPEED_LP_SSP 1 1012 1013 #define USB_SSP_SUBLINK_SPEED_LSM (0xff << 16) /* Lanespeed mantissa */ 1014 } __attribute__((packed)); 1015 1016 /* 1017 * USB Power Delivery Capability Descriptor: 1018 * Defines capabilities for PD 1019 */ 1020 /* Defines the various PD Capabilities of this device */ 1021 #define USB_PD_POWER_DELIVERY_CAPABILITY 0x06 1022 /* Provides information on each battery supported by the device */ 1023 #define USB_PD_BATTERY_INFO_CAPABILITY 0x07 1024 /* The Consumer characteristics of a Port on the device */ 1025 #define USB_PD_PD_CONSUMER_PORT_CAPABILITY 0x08 1026 /* The provider characteristics of a Port on the device */ 1027 #define USB_PD_PD_PROVIDER_PORT_CAPABILITY 0x09 1028 1029 struct usb_pd_cap_descriptor { 1030 __u8 bLength; 1031 __u8 bDescriptorType; 1032 __u8 bDevCapabilityType; /* set to USB_PD_POWER_DELIVERY_CAPABILITY */ 1033 __u8 bReserved; 1034 __le32 bmAttributes; 1035 #define USB_PD_CAP_BATTERY_CHARGING (1 << 1) /* supports Battery Charging specification */ 1036 #define USB_PD_CAP_USB_PD (1 << 2) /* supports USB Power Delivery specification */ 1037 #define USB_PD_CAP_PROVIDER (1 << 3) /* can provide power */ 1038 #define USB_PD_CAP_CONSUMER (1 << 4) /* can consume power */ 1039 #define USB_PD_CAP_CHARGING_POLICY (1 << 5) /* supports CHARGING_POLICY feature */ 1040 #define USB_PD_CAP_TYPE_C_CURRENT (1 << 6) /* supports power capabilities defined in the USB Type-C Specification */ 1041 1042 #define USB_PD_CAP_PWR_AC (1 << 8) 1043 #define USB_PD_CAP_PWR_BAT (1 << 9) 1044 #define USB_PD_CAP_PWR_USE_V_BUS (1 << 14) 1045 1046 __le16 bmProviderPorts; /* Bit zero refers to the UFP of the device */ 1047 __le16 bmConsumerPorts; 1048 __le16 bcdBCVersion; 1049 __le16 bcdPDVersion; 1050 __le16 bcdUSBTypeCVersion; 1051 } __attribute__((packed)); 1052 1053 struct usb_pd_cap_battery_info_descriptor { 1054 __u8 bLength; 1055 __u8 bDescriptorType; 1056 __u8 bDevCapabilityType; 1057 /* Index of string descriptor shall contain the user friendly name for this battery */ 1058 __u8 iBattery; 1059 /* Index of string descriptor shall contain the Serial Number String for this battery */ 1060 __u8 iSerial; 1061 __u8 iManufacturer; 1062 __u8 bBatteryId; /* uniquely identifies this battery in status Messages */ 1063 __u8 bReserved; 1064 /* 1065 * Shall contain the Battery Charge value above which this 1066 * battery is considered to be fully charged but not necessarily 1067 * “topped off.” 1068 */ 1069 __le32 dwChargedThreshold; /* in mWh */ 1070 /* 1071 * Shall contain the minimum charge level of this battery such 1072 * that above this threshold, a device can be assured of being 1073 * able to power up successfully (see Battery Charging 1.2). 1074 */ 1075 __le32 dwWeakThreshold; /* in mWh */ 1076 __le32 dwBatteryDesignCapacity; /* in mWh */ 1077 __le32 dwBatteryLastFullchargeCapacity; /* in mWh */ 1078 } __attribute__((packed)); 1079 1080 struct usb_pd_cap_consumer_port_descriptor { 1081 __u8 bLength; 1082 __u8 bDescriptorType; 1083 __u8 bDevCapabilityType; 1084 __u8 bReserved; 1085 __u8 bmCapabilities; 1086 /* port will oerate under: */ 1087 #define USB_PD_CAP_CONSUMER_BC (1 << 0) /* BC */ 1088 #define USB_PD_CAP_CONSUMER_PD (1 << 1) /* PD */ 1089 #define USB_PD_CAP_CONSUMER_TYPE_C (1 << 2) /* USB Type-C Current */ 1090 __le16 wMinVoltage; /* in 50mV units */ 1091 __le16 wMaxVoltage; /* in 50mV units */ 1092 __u16 wReserved; 1093 __le32 dwMaxOperatingPower; /* in 10 mW - operating at steady state */ 1094 __le32 dwMaxPeakPower; /* in 10mW units - operating at peak power */ 1095 __le32 dwMaxPeakPowerTime; /* in 100ms units - duration of peak */ 1096 #define USB_PD_CAP_CONSUMER_UNKNOWN_PEAK_POWER_TIME 0xffff 1097 } __attribute__((packed)); 1098 1099 struct usb_pd_cap_provider_port_descriptor { 1100 __u8 bLength; 1101 __u8 bDescriptorType; 1102 __u8 bDevCapabilityType; 1103 __u8 bReserved1; 1104 __u8 bmCapabilities; 1105 /* port will oerate under: */ 1106 #define USB_PD_CAP_PROVIDER_BC (1 << 0) /* BC */ 1107 #define USB_PD_CAP_PROVIDER_PD (1 << 1) /* PD */ 1108 #define USB_PD_CAP_PROVIDER_TYPE_C (1 << 2) /* USB Type-C Current */ 1109 __u8 bNumOfPDObjects; 1110 __u8 bReserved2; 1111 __le32 wPowerDataObject[]; 1112 } __attribute__((packed)); 1113 1114 /* 1115 * Precision time measurement capability descriptor: advertised by devices and 1116 * hubs that support PTM 1117 */ 1118 #define USB_PTM_CAP_TYPE 0xb 1119 struct usb_ptm_cap_descriptor { 1120 __u8 bLength; 1121 __u8 bDescriptorType; 1122 __u8 bDevCapabilityType; 1123 } __attribute__((packed)); 1124 1125 #define USB_DT_USB_PTM_ID_SIZE 3 1126 /* 1127 * The size of the descriptor for the Sublink Speed Attribute Count 1128 * (SSAC) specified in bmAttributes[4:0]. SSAC is zero-based 1129 */ 1130 #define USB_DT_USB_SSP_CAP_SIZE(ssac) (12 + (ssac + 1) * 4) 1131 1132 /*-------------------------------------------------------------------------*/ 1133 1134 /* USB_DT_WIRELESS_ENDPOINT_COMP: companion descriptor associated with 1135 * each endpoint descriptor for a wireless device 1136 */ 1137 struct usb_wireless_ep_comp_descriptor { 1138 __u8 bLength; 1139 __u8 bDescriptorType; 1140 1141 __u8 bMaxBurst; 1142 __u8 bMaxSequence; 1143 __le16 wMaxStreamDelay; 1144 __le16 wOverTheAirPacketSize; 1145 __u8 bOverTheAirInterval; 1146 __u8 bmCompAttributes; 1147 #define USB_ENDPOINT_SWITCH_MASK 0x03 /* in bmCompAttributes */ 1148 #define USB_ENDPOINT_SWITCH_NO 0 1149 #define USB_ENDPOINT_SWITCH_SWITCH 1 1150 #define USB_ENDPOINT_SWITCH_SCALE 2 1151 } __attribute__((packed)); 1152 1153 /*-------------------------------------------------------------------------*/ 1154 1155 /* USB_REQ_SET_HANDSHAKE is a four-way handshake used between a wireless 1156 * host and a device for connection set up, mutual authentication, and 1157 * exchanging short lived session keys. The handshake depends on a CC. 1158 */ 1159 struct usb_handshake { 1160 __u8 bMessageNumber; 1161 __u8 bStatus; 1162 __u8 tTKID[3]; 1163 __u8 bReserved; 1164 __u8 CDID[16]; 1165 __u8 nonce[16]; 1166 __u8 MIC[8]; 1167 } __attribute__((packed)); 1168 1169 /*-------------------------------------------------------------------------*/ 1170 1171 /* USB_REQ_SET_CONNECTION modifies or revokes a connection context (CC). 1172 * A CC may also be set up using non-wireless secure channels (including 1173 * wired USB!), and some devices may support CCs with multiple hosts. 1174 */ 1175 struct usb_connection_context { 1176 __u8 CHID[16]; /* persistent host id */ 1177 __u8 CDID[16]; /* device id (unique w/in host context) */ 1178 __u8 CK[16]; /* connection key */ 1179 } __attribute__((packed)); 1180 1181 /*-------------------------------------------------------------------------*/ 1182 1183 /* USB 2.0 defines three speeds, here's how Linux identifies them */ 1184 1185 enum usb_device_speed { 1186 USB_SPEED_UNKNOWN = 0, /* enumerating */ 1187 USB_SPEED_LOW, USB_SPEED_FULL, /* usb 1.1 */ 1188 USB_SPEED_HIGH, /* usb 2.0 */ 1189 USB_SPEED_WIRELESS, /* wireless (usb 2.5) */ 1190 USB_SPEED_SUPER, /* usb 3.0 */ 1191 USB_SPEED_SUPER_PLUS, /* usb 3.1 */ 1192 }; 1193 1194 1195 enum usb_device_state { 1196 /* NOTATTACHED isn't in the USB spec, and this state acts 1197 * the same as ATTACHED ... but it's clearer this way. 1198 */ 1199 USB_STATE_NOTATTACHED = 0, 1200 1201 /* chapter 9 and authentication (wireless) device states */ 1202 USB_STATE_ATTACHED, 1203 USB_STATE_POWERED, /* wired */ 1204 USB_STATE_RECONNECTING, /* auth */ 1205 USB_STATE_UNAUTHENTICATED, /* auth */ 1206 USB_STATE_DEFAULT, /* limited function */ 1207 USB_STATE_ADDRESS, 1208 USB_STATE_CONFIGURED, /* most functions */ 1209 1210 USB_STATE_SUSPENDED 1211 1212 /* NOTE: there are actually four different SUSPENDED 1213 * states, returning to POWERED, DEFAULT, ADDRESS, or 1214 * CONFIGURED respectively when SOF tokens flow again. 1215 * At this level there's no difference between L1 and L2 1216 * suspend states. (L2 being original USB 1.1 suspend.) 1217 */ 1218 }; 1219 1220 enum usb3_link_state { 1221 USB3_LPM_U0 = 0, 1222 USB3_LPM_U1, 1223 USB3_LPM_U2, 1224 USB3_LPM_U3 1225 }; 1226 1227 /* 1228 * A U1 timeout of 0x0 means the parent hub will reject any transitions to U1. 1229 * 0xff means the parent hub will accept transitions to U1, but will not 1230 * initiate a transition. 1231 * 1232 * A U1 timeout of 0x1 to 0x7F also causes the hub to initiate a transition to 1233 * U1 after that many microseconds. Timeouts of 0x80 to 0xFE are reserved 1234 * values. 1235 * 1236 * A U2 timeout of 0x0 means the parent hub will reject any transitions to U2. 1237 * 0xff means the parent hub will accept transitions to U2, but will not 1238 * initiate a transition. 1239 * 1240 * A U2 timeout of 0x1 to 0xFE also causes the hub to initiate a transition to 1241 * U2 after N*256 microseconds. Therefore a U2 timeout value of 0x1 means a U2 1242 * idle timer of 256 microseconds, 0x2 means 512 microseconds, 0xFE means 1243 * 65.024ms. 1244 */ 1245 #define USB3_LPM_DISABLED 0x0 1246 #define USB3_LPM_U1_MAX_TIMEOUT 0x7F 1247 #define USB3_LPM_U2_MAX_TIMEOUT 0xFE 1248 #define USB3_LPM_DEVICE_INITIATED 0xFF 1249 1250 struct usb_set_sel_req { 1251 __u8 u1_sel; 1252 __u8 u1_pel; 1253 __le16 u2_sel; 1254 __le16 u2_pel; 1255 } __attribute__ ((packed)); 1256 1257 /* 1258 * The Set System Exit Latency control transfer provides one byte each for 1259 * U1 SEL and U1 PEL, so the max exit latency is 0xFF. U2 SEL and U2 PEL each 1260 * are two bytes long. 1261 */ 1262 #define USB3_LPM_MAX_U1_SEL_PEL 0xFF 1263 #define USB3_LPM_MAX_U2_SEL_PEL 0xFFFF 1264 1265 /*-------------------------------------------------------------------------*/ 1266 1267 /* 1268 * As per USB compliance update, a device that is actively drawing 1269 * more than 100mA from USB must report itself as bus-powered in 1270 * the GetStatus(DEVICE) call. 1271 * https://compliance.usb.org/index.asp?UpdateFile=Electrical&Format=Standard#34 1272 */ 1273 #define USB_SELF_POWER_VBUS_MAX_DRAW 100 1274 1275 #endif /* _UAPI__LINUX_USB_CH9_H */ 1276