| /* |
| * This file holds USB constants and structures that are needed for |
| * USB device APIs. These are used by the USB device model, which is |
| * defined in chapter 9 of the USB 2.0 specification and in the |
| * Wireless USB 1.0 (spread around). Linux has several APIs in C that |
| * need these: |
| * |
| * - the master/host side Linux-USB kernel driver API; |
| * - the "usbfs" user space API; and |
| * - the Linux "gadget" slave/device/peripheral side driver API. |
| * |
| * USB 2.0 adds an additional "On The Go" (OTG) mode, which lets systems |
| * act either as a USB master/host or as a USB slave/device. That means |
| * the master and slave side APIs benefit from working well together. |
| * |
| * There's also "Wireless USB", using low power short range radios for |
| * peripheral interconnection but otherwise building on the USB framework. |
| * |
| * Note all descriptors are declared '__attribute__((packed))' so that: |
| * |
| * [a] they never get padded, either internally (USB spec writers |
| * probably handled that) or externally; |
| * |
| * [b] so that accessing bigger-than-a-bytes fields will never |
| * generate bus errors on any platform, even when the location of |
| * its descriptor inside a bundle isn't "naturally aligned", and |
| * |
| * [c] for consistency, removing all doubt even when it appears to |
| * someone that the two other points are non-issues for that |
| * particular descriptor type. |
| */ |
| |
| #ifndef __LINUX_USB_CH9_H |
| #define __LINUX_USB_CH9_H |
| |
| #include <linux/types.h> /* __u8 etc */ |
| #include <asm/byteorder.h> /* le16_to_cpu */ |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| /* CONTROL REQUEST SUPPORT */ |
| |
| /* |
| * USB directions |
| * |
| * This bit flag is used in endpoint descriptors' bEndpointAddress field. |
| * It's also one of three fields in control requests bRequestType. |
| */ |
| #define USB_DIR_OUT 0 /* to device */ |
| #define USB_DIR_IN 0x80 /* to host */ |
| |
| /* |
| * USB types, the second of three bRequestType fields |
| */ |
| #define USB_TYPE_MASK (0x03 << 5) |
| #define USB_TYPE_STANDARD (0x00 << 5) |
| #define USB_TYPE_CLASS (0x01 << 5) |
| #define USB_TYPE_VENDOR (0x02 << 5) |
| #define USB_TYPE_RESERVED (0x03 << 5) |
| |
| /* |
| * USB recipients, the third of three bRequestType fields |
| */ |
| #define USB_RECIP_MASK 0x1f |
| #define USB_RECIP_DEVICE 0x00 |
| #define USB_RECIP_INTERFACE 0x01 |
| #define USB_RECIP_ENDPOINT 0x02 |
| #define USB_RECIP_OTHER 0x03 |
| /* From Wireless USB 1.0 */ |
| #define USB_RECIP_PORT 0x04 |
| #define USB_RECIP_RPIPE 0x05 |
| |
| /* |
| * Standard requests, for the bRequest field of a SETUP packet. |
| * |
| * These are qualified by the bRequestType field, so that for example |
| * TYPE_CLASS or TYPE_VENDOR specific feature flags could be retrieved |
| * by a GET_STATUS request. |
| */ |
| #define USB_REQ_GET_STATUS 0x00 |
| #define USB_REQ_CLEAR_FEATURE 0x01 |
| #define USB_REQ_SET_FEATURE 0x03 |
| #define USB_REQ_SET_ADDRESS 0x05 |
| #define USB_REQ_GET_DESCRIPTOR 0x06 |
| #define USB_REQ_SET_DESCRIPTOR 0x07 |
| #define USB_REQ_GET_CONFIGURATION 0x08 |
| #define USB_REQ_SET_CONFIGURATION 0x09 |
| #define USB_REQ_GET_INTERFACE 0x0A |
| #define USB_REQ_SET_INTERFACE 0x0B |
| #define USB_REQ_SYNCH_FRAME 0x0C |
| |
| #define USB_REQ_SET_ENCRYPTION 0x0D /* Wireless USB */ |
| #define USB_REQ_GET_ENCRYPTION 0x0E |
| #define USB_REQ_RPIPE_ABORT 0x0E |
| #define USB_REQ_SET_HANDSHAKE 0x0F |
| #define USB_REQ_RPIPE_RESET 0x0F |
| #define USB_REQ_GET_HANDSHAKE 0x10 |
| #define USB_REQ_SET_CONNECTION 0x11 |
| #define USB_REQ_SET_SECURITY_DATA 0x12 |
| #define USB_REQ_GET_SECURITY_DATA 0x13 |
| #define USB_REQ_SET_WUSB_DATA 0x14 |
| #define USB_REQ_LOOPBACK_DATA_WRITE 0x15 |
| #define USB_REQ_LOOPBACK_DATA_READ 0x16 |
| #define USB_REQ_SET_INTERFACE_DS 0x17 |
| |
| /* The Link Power Management (LPM) ECN defines USB_REQ_TEST_AND_SET command, |
| * used by hubs to put ports into a new L1 suspend state, except that it |
| * forgot to define its number ... |
| */ |
| |
| /* |
| * USB feature flags are written using USB_REQ_{CLEAR,SET}_FEATURE, and |
| * are read as a bit array returned by USB_REQ_GET_STATUS. (So there |
| * are at most sixteen features of each type.) Hubs may also support a |
| * new USB_REQ_TEST_AND_SET_FEATURE to put ports into L1 suspend. |
| */ |
| #define USB_DEVICE_SELF_POWERED 0 /* (read only) */ |
| #define USB_DEVICE_REMOTE_WAKEUP 1 /* dev may initiate wakeup */ |
| #define USB_DEVICE_TEST_MODE 2 /* (wired high speed only) */ |
| #define USB_DEVICE_BATTERY 2 /* (wireless) */ |
| #define USB_DEVICE_B_HNP_ENABLE 3 /* (otg) dev may initiate HNP */ |
| #define USB_DEVICE_WUSB_DEVICE 3 /* (wireless)*/ |
| #define USB_DEVICE_A_HNP_SUPPORT 4 /* (otg) RH port supports HNP */ |
| #define USB_DEVICE_A_ALT_HNP_SUPPORT 5 /* (otg) other RH port does */ |
| #define USB_DEVICE_DEBUG_MODE 6 /* (special devices only) */ |
| |
| /* |
| * Test Mode Selectors |
| * See USB 2.0 spec Table 9-7 |
| */ |
| #define TEST_J 1 |
| #define TEST_K 2 |
| #define TEST_SE0_NAK 3 |
| #define TEST_PACKET 4 |
| #define TEST_FORCE_EN 5 |
| |
| /* |
| * New Feature Selectors as added by USB 3.0 |
| * See USB 3.0 spec Table 9-6 |
| */ |
| #define USB_DEVICE_U1_ENABLE 48 /* dev may initiate U1 transition */ |
| #define USB_DEVICE_U2_ENABLE 49 /* dev may initiate U2 transition */ |
| #define USB_DEVICE_LTM_ENABLE 50 /* dev may send LTM */ |
| #define USB_INTRF_FUNC_SUSPEND 0 /* function suspend */ |
| |
| #define USB_INTR_FUNC_SUSPEND_OPT_MASK 0xFF00 |
| /* |
| * Suspend Options, Table 9-7 USB 3.0 spec |
| */ |
| #define USB_INTRF_FUNC_SUSPEND_LP (1 << (8 + 0)) |
| #define USB_INTRF_FUNC_SUSPEND_RW (1 << (8 + 1)) |
| |
| #define USB_ENDPOINT_HALT 0 /* IN/OUT will STALL */ |
| |
| /* Bit array elements as returned by the USB_REQ_GET_STATUS request. */ |
| #define USB_DEV_STAT_U1_ENABLED 2 /* transition into U1 state */ |
| #define USB_DEV_STAT_U2_ENABLED 3 /* transition into U2 state */ |
| #define USB_DEV_STAT_LTM_ENABLED 4 /* Latency tolerance messages */ |
| |
| /** |
| * struct usb_ctrlrequest - SETUP data for a USB device control request |
| * @bRequestType: matches the USB bmRequestType field |
| * @bRequest: matches the USB bRequest field |
| * @wValue: matches the USB wValue field (le16 byte order) |
| * @wIndex: matches the USB wIndex field (le16 byte order) |
| * @wLength: matches the USB wLength field (le16 byte order) |
| * |
| * This structure is used to send control requests to a USB device. It matches |
| * the different fields of the USB 2.0 Spec section 9.3, table 9-2. See the |
| * USB spec for a fuller description of the different fields, and what they are |
| * used for. |
| * |
| * Note that the driver for any interface can issue control requests. |
| * For most devices, interfaces don't coordinate with each other, so |
| * such requests may be made at any time. |
| */ |
| struct usb_ctrlrequest { |
| __u8 bRequestType; |
| __u8 bRequest; |
| __le16 wValue; |
| __le16 wIndex; |
| __le16 wLength; |
| } __attribute__ ((packed)); |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| /* |
| * STANDARD DESCRIPTORS ... as returned by GET_DESCRIPTOR, or |
| * (rarely) accepted by SET_DESCRIPTOR. |
| * |
| * Note that all multi-byte values here are encoded in little endian |
| * byte order "on the wire". Within the kernel and when exposed |
| * through the Linux-USB APIs, they are not converted to cpu byte |
| * order; it is the responsibility of the client code to do this. |
| * The single exception is when device and configuration descriptors (but |
| * not other descriptors) are read from usbfs (i.e. /proc/bus/usb/BBB/DDD); |
| * in this case the fields are converted to host endianness by the kernel. |
| */ |
| |
| /* |
| * Descriptor types ... USB 2.0 spec table 9.5 |
| */ |
| #define USB_DT_DEVICE 0x01 |
| #define USB_DT_CONFIG 0x02 |
| #define USB_DT_STRING 0x03 |
| #define USB_DT_INTERFACE 0x04 |
| #define USB_DT_ENDPOINT 0x05 |
| #define USB_DT_DEVICE_QUALIFIER 0x06 |
| #define USB_DT_OTHER_SPEED_CONFIG 0x07 |
| #define USB_DT_INTERFACE_POWER 0x08 |
| /* these are from a minor usb 2.0 revision (ECN) */ |
| #define USB_DT_OTG 0x09 |
| #define USB_DT_DEBUG 0x0a |
| #define USB_DT_INTERFACE_ASSOCIATION 0x0b |
| /* these are from the Wireless USB spec */ |
| #define USB_DT_SECURITY 0x0c |
| #define USB_DT_KEY 0x0d |
| #define USB_DT_ENCRYPTION_TYPE 0x0e |
| #define USB_DT_BOS 0x0f |
| #define USB_DT_DEVICE_CAPABILITY 0x10 |
| #define USB_DT_WIRELESS_ENDPOINT_COMP 0x11 |
| #define USB_DT_WIRE_ADAPTER 0x21 |
| #define USB_DT_RPIPE 0x22 |
| #define USB_DT_CS_RADIO_CONTROL 0x23 |
| /* From the T10 UAS specification */ |
| #define USB_DT_PIPE_USAGE 0x24 |
| /* From the USB 3.0 spec */ |
| #define USB_DT_SS_ENDPOINT_COMP 0x30 |
| |
| /* Conventional codes for class-specific descriptors. The convention is |
| * defined in the USB "Common Class" Spec (3.11). Individual class specs |
| * are authoritative for their usage, not the "common class" writeup. |
| */ |
| #define USB_DT_CS_DEVICE (USB_TYPE_CLASS | USB_DT_DEVICE) |
| #define USB_DT_CS_CONFIG (USB_TYPE_CLASS | USB_DT_CONFIG) |
| #define USB_DT_CS_STRING (USB_TYPE_CLASS | USB_DT_STRING) |
| #define USB_DT_CS_INTERFACE (USB_TYPE_CLASS | USB_DT_INTERFACE) |
| #define USB_DT_CS_ENDPOINT (USB_TYPE_CLASS | USB_DT_ENDPOINT) |
| |
| /* All standard descriptors have these 2 fields at the beginning */ |
| struct usb_descriptor_header { |
| __u8 bLength; |
| __u8 bDescriptorType; |
| } __attribute__ ((packed)); |
| |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| /* USB_DT_DEVICE: Device descriptor */ |
| struct usb_device_descriptor { |
| __u8 bLength; |
| __u8 bDescriptorType; |
| |
| __le16 bcdUSB; |
| __u8 bDeviceClass; |
| __u8 bDeviceSubClass; |
| __u8 bDeviceProtocol; |
| __u8 bMaxPacketSize0; |
| __le16 idVendor; |
| __le16 idProduct; |
| __le16 bcdDevice; |
| __u8 iManufacturer; |
| __u8 iProduct; |
| __u8 iSerialNumber; |
| __u8 bNumConfigurations; |
| } __attribute__ ((packed)); |
| |
| #define USB_DT_DEVICE_SIZE 18 |
| |
| |
| /* |
| * Device and/or Interface Class codes |
| * as found in bDeviceClass or bInterfaceClass |
| * and defined by www.usb.org documents |
| */ |
| #define USB_CLASS_PER_INTERFACE 0 /* for DeviceClass */ |
| #define USB_CLASS_AUDIO 1 |
| #define USB_CLASS_COMM 2 |
| #define USB_CLASS_HID 3 |
| #define USB_CLASS_PHYSICAL 5 |
| #define USB_CLASS_STILL_IMAGE 6 |
| #define USB_CLASS_PRINTER 7 |
| #define USB_CLASS_MASS_STORAGE 8 |
| #define USB_CLASS_HUB 9 |
| #define USB_CLASS_CDC_DATA 0x0a |
| #define USB_CLASS_CSCID 0x0b /* chip+ smart card */ |
| #define USB_CLASS_CONTENT_SEC 0x0d /* content security */ |
| #define USB_CLASS_VIDEO 0x0e |
| #define USB_CLASS_WIRELESS_CONTROLLER 0xe0 |
| #define USB_CLASS_MISC 0xef |
| #define USB_CLASS_APP_SPEC 0xfe |
| #define USB_CLASS_VENDOR_SPEC 0xff |
| |
| #define USB_SUBCLASS_VENDOR_SPEC 0xff |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| /* USB_DT_CONFIG: Configuration descriptor information. |
| * |
| * USB_DT_OTHER_SPEED_CONFIG is the same descriptor, except that the |
| * descriptor type is different. Highspeed-capable devices can look |
| * different depending on what speed they're currently running. Only |
| * devices with a USB_DT_DEVICE_QUALIFIER have any OTHER_SPEED_CONFIG |
| * descriptors. |
| */ |
| struct usb_config_descriptor { |
| __u8 bLength; |
| __u8 bDescriptorType; |
| |
| __le16 wTotalLength; |
| __u8 bNumInterfaces; |
| __u8 bConfigurationValue; |
| __u8 iConfiguration; |
| __u8 bmAttributes; |
| __u8 bMaxPower; |
| } __attribute__ ((packed)); |
| |
| #define USB_DT_CONFIG_SIZE 9 |
| |
| /* from config descriptor bmAttributes */ |
| #define USB_CONFIG_ATT_ONE (1 << 7) /* must be set */ |
| #define USB_CONFIG_ATT_SELFPOWER (1 << 6) /* self powered */ |
| #define USB_CONFIG_ATT_WAKEUP (1 << 5) /* can wakeup */ |
| #define USB_CONFIG_ATT_BATTERY (1 << 4) /* battery powered */ |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| /* USB_DT_STRING: String descriptor */ |
| struct usb_string_descriptor { |
| __u8 bLength; |
| __u8 bDescriptorType; |
| |
| __le16 wData[1]; /* UTF-16LE encoded */ |
| } __attribute__ ((packed)); |
| |
| /* note that "string" zero is special, it holds language codes that |
| * the device supports, not Unicode characters. |
| */ |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| /* USB_DT_INTERFACE: Interface descriptor */ |
| struct usb_interface_descriptor { |
| __u8 bLength; |
| __u8 bDescriptorType; |
| |
| __u8 bInterfaceNumber; |
| __u8 bAlternateSetting; |
| __u8 bNumEndpoints; |
| __u8 bInterfaceClass; |
| __u8 bInterfaceSubClass; |
| __u8 bInterfaceProtocol; |
| __u8 iInterface; |
| } __attribute__ ((packed)); |
| |
| #define USB_DT_INTERFACE_SIZE 9 |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| /* USB_DT_ENDPOINT: Endpoint descriptor */ |
| struct usb_endpoint_descriptor { |
| __u8 bLength; |
| __u8 bDescriptorType; |
| |
| __u8 bEndpointAddress; |
| __u8 bmAttributes; |
| __le16 wMaxPacketSize; |
| __u8 bInterval; |
| |
| /* NOTE: these two are _only_ in audio endpoints. */ |
| /* use USB_DT_ENDPOINT*_SIZE in bLength, not sizeof. */ |
| __u8 bRefresh; |
| __u8 bSynchAddress; |
| } __attribute__ ((packed)); |
| |
| #define USB_DT_ENDPOINT_SIZE 7 |
| #define USB_DT_ENDPOINT_AUDIO_SIZE 9 /* Audio extension */ |
| |
| |
| /* |
| * Endpoints |
| */ |
| #define USB_ENDPOINT_NUMBER_MASK 0x0f /* in bEndpointAddress */ |
| #define USB_ENDPOINT_DIR_MASK 0x80 |
| |
| #define USB_ENDPOINT_XFERTYPE_MASK 0x03 /* in bmAttributes */ |
| #define USB_ENDPOINT_XFER_CONTROL 0 |
| #define USB_ENDPOINT_XFER_ISOC 1 |
| #define USB_ENDPOINT_XFER_BULK 2 |
| #define USB_ENDPOINT_XFER_INT 3 |
| #define USB_ENDPOINT_MAX_ADJUSTABLE 0x80 |
| |
| #define USB_ENDPOINT_SYNCTYPE 0x0c |
| #define USB_ENDPOINT_SYNC_NONE (0 << 2) |
| #define USB_ENDPOINT_SYNC_ASYNC (1 << 2) |
| #define USB_ENDPOINT_SYNC_ADAPTIVE (2 << 2) |
| #define USB_ENDPOINT_SYNC_SYNC (3 << 2) |
| |
| #define USB_ENDPOINT_USAGE_MASK 0x30 |
| #define USB_ENDPOINT_USAGE_DATA 0x00 |
| #define USB_ENDPOINT_USAGE_FEEDBACK 0x10 |
| #define USB_ENDPOINT_USAGE_IMPLICIT_FB 0x20 /* Implicit feedback Data endpoint */ |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| /** |
| * usb_endpoint_num - get the endpoint's number |
| * @epd: endpoint to be checked |
| * |
| * Returns @epd's number: 0 to 15. |
| */ |
| static __inline__ int usb_endpoint_num(const struct usb_endpoint_descriptor *epd) |
| { |
| return epd->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; |
| } |
| |
| /** |
| * usb_endpoint_type - get the endpoint's transfer type |
| * @epd: endpoint to be checked |
| * |
| * Returns one of USB_ENDPOINT_XFER_{CONTROL, ISOC, BULK, INT} according |
| * to @epd's transfer type. |
| */ |
| static __inline__ int usb_endpoint_type(const struct usb_endpoint_descriptor *epd) |
| { |
| return epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK; |
| } |
| |
| /** |
| * usb_endpoint_dir_in - check if the endpoint has IN direction |
| * @epd: endpoint to be checked |
| * |
| * Returns true if the endpoint is of type IN, otherwise it returns false. |
| */ |
| static __inline__ int usb_endpoint_dir_in(const struct usb_endpoint_descriptor *epd) |
| { |
| return ((epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN); |
| } |
| |
| /** |
| * usb_endpoint_dir_out - check if the endpoint has OUT direction |
| * @epd: endpoint to be checked |
| * |
| * Returns true if the endpoint is of type OUT, otherwise it returns false. |
| */ |
| static __inline__ int usb_endpoint_dir_out( |
| const struct usb_endpoint_descriptor *epd) |
| { |
| return ((epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT); |
| } |
| |
| /** |
| * usb_endpoint_xfer_bulk - check if the endpoint has bulk transfer type |
| * @epd: endpoint to be checked |
| * |
| * Returns true if the endpoint is of type bulk, otherwise it returns false. |
| */ |
| static __inline__ int usb_endpoint_xfer_bulk( |
| const struct usb_endpoint_descriptor *epd) |
| { |
| return ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == |
| USB_ENDPOINT_XFER_BULK); |
| } |
| |
| /** |
| * usb_endpoint_xfer_control - check if the endpoint has control transfer type |
| * @epd: endpoint to be checked |
| * |
| * Returns true if the endpoint is of type control, otherwise it returns false. |
| */ |
| static __inline__ int usb_endpoint_xfer_control( |
| const struct usb_endpoint_descriptor *epd) |
| { |
| return ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == |
| USB_ENDPOINT_XFER_CONTROL); |
| } |
| |
| /** |
| * usb_endpoint_xfer_int - check if the endpoint has interrupt transfer type |
| * @epd: endpoint to be checked |
| * |
| * Returns true if the endpoint is of type interrupt, otherwise it returns |
| * false. |
| */ |
| static __inline__ int usb_endpoint_xfer_int( |
| const struct usb_endpoint_descriptor *epd) |
| { |
| return ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == |
| USB_ENDPOINT_XFER_INT); |
| } |
| |
| /** |
| * usb_endpoint_xfer_isoc - check if the endpoint has isochronous transfer type |
| * @epd: endpoint to be checked |
| * |
| * Returns true if the endpoint is of type isochronous, otherwise it returns |
| * false. |
| */ |
| static __inline__ int usb_endpoint_xfer_isoc( |
| const struct usb_endpoint_descriptor *epd) |
| { |
| return ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == |
| USB_ENDPOINT_XFER_ISOC); |
| } |
| |
| /** |
| * usb_endpoint_is_bulk_in - check if the endpoint is bulk IN |
| * @epd: endpoint to be checked |
| * |
| * Returns true if the endpoint has bulk transfer type and IN direction, |
| * otherwise it returns false. |
| */ |
| static __inline__ int usb_endpoint_is_bulk_in( |
| const struct usb_endpoint_descriptor *epd) |
| { |
| return usb_endpoint_xfer_bulk(epd) && usb_endpoint_dir_in(epd); |
| } |
| |
| /** |
| * usb_endpoint_is_bulk_out - check if the endpoint is bulk OUT |
| * @epd: endpoint to be checked |
| * |
| * Returns true if the endpoint has bulk transfer type and OUT direction, |
| * otherwise it returns false. |
| */ |
| static __inline__ int usb_endpoint_is_bulk_out( |
| const struct usb_endpoint_descriptor *epd) |
| { |
| return usb_endpoint_xfer_bulk(epd) && usb_endpoint_dir_out(epd); |
| } |
| |
| /** |
| * usb_endpoint_is_int_in - check if the endpoint is interrupt IN |
| * @epd: endpoint to be checked |
| * |
| * Returns true if the endpoint has interrupt transfer type and IN direction, |
| * otherwise it returns false. |
| */ |
| static __inline__ int usb_endpoint_is_int_in( |
| const struct usb_endpoint_descriptor *epd) |
| { |
| return usb_endpoint_xfer_int(epd) && usb_endpoint_dir_in(epd); |
| } |
| |
| /** |
| * usb_endpoint_is_int_out - check if the endpoint is interrupt OUT |
| * @epd: endpoint to be checked |
| * |
| * Returns true if the endpoint has interrupt transfer type and OUT direction, |
| * otherwise it returns false. |
| */ |
| static __inline__ int usb_endpoint_is_int_out( |
| const struct usb_endpoint_descriptor *epd) |
| { |
| return usb_endpoint_xfer_int(epd) && usb_endpoint_dir_out(epd); |
| } |
| |
| /** |
| * usb_endpoint_is_isoc_in - check if the endpoint is isochronous IN |
| * @epd: endpoint to be checked |
| * |
| * Returns true if the endpoint has isochronous transfer type and IN direction, |
| * otherwise it returns false. |
| */ |
| static __inline__ int usb_endpoint_is_isoc_in( |
| const struct usb_endpoint_descriptor *epd) |
| { |
| return usb_endpoint_xfer_isoc(epd) && usb_endpoint_dir_in(epd); |
| } |
| |
| /** |
| * usb_endpoint_is_isoc_out - check if the endpoint is isochronous OUT |
| * @epd: endpoint to be checked |
| * |
| * Returns true if the endpoint has isochronous transfer type and OUT direction, |
| * otherwise it returns false. |
| */ |
| static __inline__ int usb_endpoint_is_isoc_out( |
| const struct usb_endpoint_descriptor *epd) |
| { |
| return usb_endpoint_xfer_isoc(epd) && usb_endpoint_dir_out(epd); |
| } |
| |
| /** |
| * usb_endpoint_maxp - get endpoint's max packet size |
| * @epd: endpoint to be checked |
| * |
| * Returns @epd's max packet |
| */ |
| static __inline__ int usb_endpoint_maxp(const struct usb_endpoint_descriptor *epd) |
| { |
| return __le16_to_cpu(epd->wMaxPacketSize); |
| } |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| /* USB_DT_SS_ENDPOINT_COMP: SuperSpeed Endpoint Companion descriptor */ |
| struct usb_ss_ep_comp_descriptor { |
| __u8 bLength; |
| __u8 bDescriptorType; |
| |
| __u8 bMaxBurst; |
| __u8 bmAttributes; |
| __le16 wBytesPerInterval; |
| } __attribute__ ((packed)); |
| |
| #define USB_DT_SS_EP_COMP_SIZE 6 |
| |
| /* Bits 4:0 of bmAttributes if this is a bulk endpoint */ |
| static __inline__ int |
| usb_ss_max_streams(const struct usb_ss_ep_comp_descriptor *comp) |
| { |
| int max_streams; |
| |
| if (!comp) |
| return 0; |
| |
| max_streams = comp->bmAttributes & 0x1f; |
| |
| if (!max_streams) |
| return 0; |
| |
| max_streams = 1 << max_streams; |
| |
| return max_streams; |
| } |
| |
| /* Bits 1:0 of bmAttributes if this is an isoc endpoint */ |
| #define USB_SS_MULT(p) (1 + ((p) & 0x3)) |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| /* USB_DT_DEVICE_QUALIFIER: Device Qualifier descriptor */ |
| struct usb_qualifier_descriptor { |
| __u8 bLength; |
| __u8 bDescriptorType; |
| |
| __le16 bcdUSB; |
| __u8 bDeviceClass; |
| __u8 bDeviceSubClass; |
| __u8 bDeviceProtocol; |
| __u8 bMaxPacketSize0; |
| __u8 bNumConfigurations; |
| __u8 bRESERVED; |
| } __attribute__ ((packed)); |
| |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| /* USB_DT_OTG (from OTG 1.0a supplement) */ |
| struct usb_otg_descriptor { |
| __u8 bLength; |
| __u8 bDescriptorType; |
| |
| __u8 bmAttributes; /* support for HNP, SRP, etc */ |
| } __attribute__ ((packed)); |
| |
| /* from usb_otg_descriptor.bmAttributes */ |
| #define USB_OTG_SRP (1 << 0) |
| #define USB_OTG_HNP (1 << 1) /* swap host/device roles */ |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| /* USB_DT_DEBUG: for special highspeed devices, replacing serial console */ |
| struct usb_debug_descriptor { |
| __u8 bLength; |
| __u8 bDescriptorType; |
| |
| /* bulk endpoints with 8 byte maxpacket */ |
| __u8 bDebugInEndpoint; |
| __u8 bDebugOutEndpoint; |
| } __attribute__((packed)); |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| /* USB_DT_INTERFACE_ASSOCIATION: groups interfaces */ |
| struct usb_interface_assoc_descriptor { |
| __u8 bLength; |
| __u8 bDescriptorType; |
| |
| __u8 bFirstInterface; |
| __u8 bInterfaceCount; |
| __u8 bFunctionClass; |
| __u8 bFunctionSubClass; |
| __u8 bFunctionProtocol; |
| __u8 iFunction; |
| } __attribute__ ((packed)); |
| |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| /* USB_DT_SECURITY: group of wireless security descriptors, including |
| * encryption types available for setting up a CC/association. |
| */ |
| struct usb_security_descriptor { |
| __u8 bLength; |
| __u8 bDescriptorType; |
| |
| __le16 wTotalLength; |
| __u8 bNumEncryptionTypes; |
| } __attribute__((packed)); |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| /* USB_DT_KEY: used with {GET,SET}_SECURITY_DATA; only public keys |
| * may be retrieved. |
| */ |
| struct usb_key_descriptor { |
| __u8 bLength; |
| __u8 bDescriptorType; |
| |
| __u8 tTKID[3]; |
| __u8 bReserved; |
| __u8 bKeyData[0]; |
| } __attribute__((packed)); |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| /* USB_DT_ENCRYPTION_TYPE: bundled in DT_SECURITY groups */ |
| struct usb_encryption_descriptor { |
| __u8 bLength; |
| __u8 bDescriptorType; |
| |
| __u8 bEncryptionType; |
| #define USB_ENC_TYPE_UNSECURE 0 |
| #define USB_ENC_TYPE_WIRED 1 /* non-wireless mode */ |
| #define USB_ENC_TYPE_CCM_1 2 /* aes128/cbc session */ |
| #define USB_ENC_TYPE_RSA_1 3 /* rsa3072/sha1 auth */ |
| __u8 bEncryptionValue; /* use in SET_ENCRYPTION */ |
| __u8 bAuthKeyIndex; |
| } __attribute__((packed)); |
| |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| /* USB_DT_BOS: group of device-level capabilities */ |
| struct usb_bos_descriptor { |
| __u8 bLength; |
| __u8 bDescriptorType; |
| |
| __le16 wTotalLength; |
| __u8 bNumDeviceCaps; |
| } __attribute__((packed)); |
| |
| #define USB_DT_BOS_SIZE 5 |
| /*-------------------------------------------------------------------------*/ |
| |
| /* USB_DT_DEVICE_CAPABILITY: grouped with BOS */ |
| struct usb_dev_cap_header { |
| __u8 bLength; |
| __u8 bDescriptorType; |
| __u8 bDevCapabilityType; |
| } __attribute__((packed)); |
| |
| #define USB_CAP_TYPE_WIRELESS_USB 1 |
| |
| struct usb_wireless_cap_descriptor { /* Ultra Wide Band */ |
| __u8 bLength; |
| __u8 bDescriptorType; |
| __u8 bDevCapabilityType; |
| |
| __u8 bmAttributes; |
| #define USB_WIRELESS_P2P_DRD (1 << 1) |
| #define USB_WIRELESS_BEACON_MASK (3 << 2) |
| #define USB_WIRELESS_BEACON_SELF (1 << 2) |
| #define USB_WIRELESS_BEACON_DIRECTED (2 << 2) |
| #define USB_WIRELESS_BEACON_NONE (3 << 2) |
| __le16 wPHYRates; /* bit rates, Mbps */ |
| #define USB_WIRELESS_PHY_53 (1 << 0) /* always set */ |
| #define USB_WIRELESS_PHY_80 (1 << 1) |
| #define USB_WIRELESS_PHY_107 (1 << 2) /* always set */ |
| #define USB_WIRELESS_PHY_160 (1 << 3) |
| #define USB_WIRELESS_PHY_200 (1 << 4) /* always set */ |
| #define USB_WIRELESS_PHY_320 (1 << 5) |
| #define USB_WIRELESS_PHY_400 (1 << 6) |
| #define USB_WIRELESS_PHY_480 (1 << 7) |
| __u8 bmTFITXPowerInfo; /* TFI power levels */ |
| __u8 bmFFITXPowerInfo; /* FFI power levels */ |
| __le16 bmBandGroup; |
| __u8 bReserved; |
| } __attribute__((packed)); |
| |
| /* USB 2.0 Extension descriptor */ |
| #define USB_CAP_TYPE_EXT 2 |
| |
| struct usb_ext_cap_descriptor { /* Link Power Management */ |
| __u8 bLength; |
| __u8 bDescriptorType; |
| __u8 bDevCapabilityType; |
| __le32 bmAttributes; |
| #define USB_LPM_SUPPORT (1 << 1) /* supports LPM */ |
| } __attribute__((packed)); |
| |
| #define USB_DT_USB_EXT_CAP_SIZE 7 |
| |
| /* |
| * SuperSpeed USB Capability descriptor: Defines the set of SuperSpeed USB |
| * specific device level capabilities |
| */ |
| #define USB_SS_CAP_TYPE 3 |
| struct usb_ss_cap_descriptor { /* Link Power Management */ |
| __u8 bLength; |
| __u8 bDescriptorType; |
| __u8 bDevCapabilityType; |
| __u8 bmAttributes; |
| #define USB_LTM_SUPPORT (1 << 1) /* supports LTM */ |
| __le16 wSpeedSupported; |
| #define USB_LOW_SPEED_OPERATION (1) /* Low speed operation */ |
| #define USB_FULL_SPEED_OPERATION (1 << 1) /* Full speed operation */ |
| #define USB_HIGH_SPEED_OPERATION (1 << 2) /* High speed operation */ |
| #define USB_5GBPS_OPERATION (1 << 3) /* Operation at 5Gbps */ |
| __u8 bFunctionalitySupport; |
| __u8 bU1devExitLat; |
| __le16 bU2DevExitLat; |
| } __attribute__((packed)); |
| |
| #define USB_DT_USB_SS_CAP_SIZE 10 |
| |
| /* |
| * Container ID Capability descriptor: Defines the instance unique ID used to |
| * identify the instance across all operating modes |
| */ |
| #define CONTAINER_ID_TYPE 4 |
| struct usb_ss_container_id_descriptor { |
| __u8 bLength; |
| __u8 bDescriptorType; |
| __u8 bDevCapabilityType; |
| __u8 bReserved; |
| __u8 ContainerID[16]; /* 128-bit number */ |
| } __attribute__((packed)); |
| |
| #define USB_DT_USB_SS_CONTN_ID_SIZE 20 |
| /*-------------------------------------------------------------------------*/ |
| |
| /* USB_DT_WIRELESS_ENDPOINT_COMP: companion descriptor associated with |
| * each endpoint descriptor for a wireless device |
| */ |
| struct usb_wireless_ep_comp_descriptor { |
| __u8 bLength; |
| __u8 bDescriptorType; |
| |
| __u8 bMaxBurst; |
| __u8 bMaxSequence; |
| __le16 wMaxStreamDelay; |
| __le16 wOverTheAirPacketSize; |
| __u8 bOverTheAirInterval; |
| __u8 bmCompAttributes; |
| #define USB_ENDPOINT_SWITCH_MASK 0x03 /* in bmCompAttributes */ |
| #define USB_ENDPOINT_SWITCH_NO 0 |
| #define USB_ENDPOINT_SWITCH_SWITCH 1 |
| #define USB_ENDPOINT_SWITCH_SCALE 2 |
| } __attribute__((packed)); |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| /* USB_REQ_SET_HANDSHAKE is a four-way handshake used between a wireless |
| * host and a device for connection set up, mutual authentication, and |
| * exchanging short lived session keys. The handshake depends on a CC. |
| */ |
| struct usb_handshake { |
| __u8 bMessageNumber; |
| __u8 bStatus; |
| __u8 tTKID[3]; |
| __u8 bReserved; |
| __u8 CDID[16]; |
| __u8 nonce[16]; |
| __u8 MIC[8]; |
| } __attribute__((packed)); |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| /* USB_REQ_SET_CONNECTION modifies or revokes a connection context (CC). |
| * A CC may also be set up using non-wireless secure channels (including |
| * wired USB!), and some devices may support CCs with multiple hosts. |
| */ |
| struct usb_connection_context { |
| __u8 CHID[16]; /* persistent host id */ |
| __u8 CDID[16]; /* device id (unique w/in host context) */ |
| __u8 CK[16]; /* connection key */ |
| } __attribute__((packed)); |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| /* USB 2.0 defines three speeds, here's how Linux identifies them */ |
| |
| enum usb_device_speed { |
| USB_SPEED_UNKNOWN = 0, /* enumerating */ |
| USB_SPEED_LOW, USB_SPEED_FULL, /* usb 1.1 */ |
| USB_SPEED_HIGH, /* usb 2.0 */ |
| USB_SPEED_WIRELESS, /* wireless (usb 2.5) */ |
| USB_SPEED_SUPER, /* usb 3.0 */ |
| }; |
| |
| |
| enum usb_device_state { |
| /* NOTATTACHED isn't in the USB spec, and this state acts |
| * the same as ATTACHED ... but it's clearer this way. |
| */ |
| USB_STATE_NOTATTACHED = 0, |
| |
| /* chapter 9 and authentication (wireless) device states */ |
| USB_STATE_ATTACHED, |
| USB_STATE_POWERED, /* wired */ |
| USB_STATE_RECONNECTING, /* auth */ |
| USB_STATE_UNAUTHENTICATED, /* auth */ |
| USB_STATE_DEFAULT, /* limited function */ |
| USB_STATE_ADDRESS, |
| USB_STATE_CONFIGURED, /* most functions */ |
| |
| USB_STATE_SUSPENDED |
| |
| /* NOTE: there are actually four different SUSPENDED |
| * states, returning to POWERED, DEFAULT, ADDRESS, or |
| * CONFIGURED respectively when SOF tokens flow again. |
| * At this level there's no difference between L1 and L2 |
| * suspend states. (L2 being original USB 1.1 suspend.) |
| */ |
| }; |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| /* |
| * As per USB compliance update, a device that is actively drawing |
| * more than 100mA from USB must report itself as bus-powered in |
| * the GetStatus(DEVICE) call. |
| * http://compliance.usb.org/index.asp?UpdateFile=Electrical&Format=Standard#34 |
| */ |
| #define USB_SELF_POWER_VBUS_MAX_DRAW 100 |
| |
| #endif /* __LINUX_USB_CH9_H */ |