251 lines
6.9 KiB
C
251 lines
6.9 KiB
C
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/*
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* USB Communications Device Class (CDC) definitions
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*
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* CDC says how to talk to lots of different types of network adapters,
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* notably ethernet adapters and various modems. It's used mostly with
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* firmware based USB peripherals.
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*/
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#ifndef __LINUX_USB_CDC_H
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#define __LINUX_USB_CDC_H
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#include <linux/types.h>
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#define USB_CDC_SUBCLASS_ACM 0x02
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#define USB_CDC_SUBCLASS_ETHERNET 0x06
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#define USB_CDC_SUBCLASS_WHCM 0x08
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#define USB_CDC_SUBCLASS_DMM 0x09
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#define USB_CDC_SUBCLASS_MDLM 0x0a
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#define USB_CDC_SUBCLASS_OBEX 0x0b
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#define USB_CDC_SUBCLASS_EEM 0x0c
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#define USB_CDC_PROTO_NONE 0
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#define USB_CDC_ACM_PROTO_AT_V25TER 1
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#define USB_CDC_ACM_PROTO_AT_PCCA101 2
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#define USB_CDC_ACM_PROTO_AT_PCCA101_WAKE 3
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#define USB_CDC_ACM_PROTO_AT_GSM 4
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#define USB_CDC_ACM_PROTO_AT_3G 5
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#define USB_CDC_ACM_PROTO_AT_CDMA 6
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#define USB_CDC_ACM_PROTO_VENDOR 0xff
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#define USB_CDC_PROTO_EEM 7
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/*-------------------------------------------------------------------------*/
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/*
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* Class-Specific descriptors ... there are a couple dozen of them
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*/
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#define USB_CDC_HEADER_TYPE 0x00 /* header_desc */
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#define USB_CDC_CALL_MANAGEMENT_TYPE 0x01 /* call_mgmt_descriptor */
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#define USB_CDC_ACM_TYPE 0x02 /* acm_descriptor */
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#define USB_CDC_UNION_TYPE 0x06 /* union_desc */
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#define USB_CDC_COUNTRY_TYPE 0x07
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#define USB_CDC_NETWORK_TERMINAL_TYPE 0x0a /* network_terminal_desc */
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#define USB_CDC_ETHERNET_TYPE 0x0f /* ether_desc */
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#define USB_CDC_WHCM_TYPE 0x11
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#define USB_CDC_MDLM_TYPE 0x12 /* mdlm_desc */
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#define USB_CDC_MDLM_DETAIL_TYPE 0x13 /* mdlm_detail_desc */
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#define USB_CDC_DMM_TYPE 0x14
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#define USB_CDC_OBEX_TYPE 0x15
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/* "Header Functional Descriptor" from CDC spec 5.2.3.1 */
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struct usb_cdc_header_desc {
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__u8 bLength;
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__u8 bDescriptorType;
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__u8 bDescriptorSubType;
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__le16 bcdCDC;
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} __attribute__ ((packed));
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/* "Call Management Descriptor" from CDC spec 5.2.3.2 */
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struct usb_cdc_call_mgmt_descriptor {
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__u8 bLength;
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__u8 bDescriptorType;
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__u8 bDescriptorSubType;
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__u8 bmCapabilities;
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#define USB_CDC_CALL_MGMT_CAP_CALL_MGMT 0x01
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#define USB_CDC_CALL_MGMT_CAP_DATA_INTF 0x02
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__u8 bDataInterface;
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} __attribute__ ((packed));
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/* "Abstract Control Management Descriptor" from CDC spec 5.2.3.3 */
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struct usb_cdc_acm_descriptor {
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__u8 bLength;
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__u8 bDescriptorType;
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__u8 bDescriptorSubType;
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__u8 bmCapabilities;
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} __attribute__ ((packed));
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/* capabilities from 5.2.3.3 */
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#define USB_CDC_COMM_FEATURE 0x01
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#define USB_CDC_CAP_LINE 0x02
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#define USB_CDC_CAP_BRK 0x04
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#define USB_CDC_CAP_NOTIFY 0x08
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/* "Union Functional Descriptor" from CDC spec 5.2.3.8 */
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struct usb_cdc_union_desc {
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__u8 bLength;
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__u8 bDescriptorType;
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__u8 bDescriptorSubType;
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__u8 bMasterInterface0;
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__u8 bSlaveInterface0;
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/* ... and there could be other slave interfaces */
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} __attribute__ ((packed));
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/* "Country Selection Functional Descriptor" from CDC spec 5.2.3.9 */
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struct usb_cdc_country_functional_desc {
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__u8 bLength;
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__u8 bDescriptorType;
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__u8 bDescriptorSubType;
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__u8 iCountryCodeRelDate;
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__le16 wCountyCode0;
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/* ... and there can be a lot of country codes */
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} __attribute__ ((packed));
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/* "Network Channel Terminal Functional Descriptor" from CDC spec 5.2.3.11 */
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struct usb_cdc_network_terminal_desc {
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__u8 bLength;
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__u8 bDescriptorType;
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__u8 bDescriptorSubType;
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__u8 bEntityId;
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__u8 iName;
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__u8 bChannelIndex;
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__u8 bPhysicalInterface;
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} __attribute__ ((packed));
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/* "Ethernet Networking Functional Descriptor" from CDC spec 5.2.3.16 */
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struct usb_cdc_ether_desc {
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__u8 bLength;
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__u8 bDescriptorType;
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__u8 bDescriptorSubType;
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__u8 iMACAddress;
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__le32 bmEthernetStatistics;
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__le16 wMaxSegmentSize;
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__le16 wNumberMCFilters;
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__u8 bNumberPowerFilters;
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} __attribute__ ((packed));
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/* "Telephone Control Model Functional Descriptor" from CDC WMC spec 6.3..3 */
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struct usb_cdc_dmm_desc {
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__u8 bFunctionLength;
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__u8 bDescriptorType;
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__u8 bDescriptorSubtype;
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__u16 bcdVersion;
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__le16 wMaxCommand;
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} __attribute__ ((packed));
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/* "MDLM Functional Descriptor" from CDC WMC spec 6.7.2.3 */
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struct usb_cdc_mdlm_desc {
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__u8 bLength;
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__u8 bDescriptorType;
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__u8 bDescriptorSubType;
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__le16 bcdVersion;
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__u8 bGUID[16];
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} __attribute__ ((packed));
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/* "MDLM Detail Functional Descriptor" from CDC WMC spec 6.7.2.4 */
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struct usb_cdc_mdlm_detail_desc {
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__u8 bLength;
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__u8 bDescriptorType;
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__u8 bDescriptorSubType;
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/* type is associated with mdlm_desc.bGUID */
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__u8 bGuidDescriptorType;
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__u8 bDetailData[0];
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} __attribute__ ((packed));
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/* "OBEX Control Model Functional Descriptor" */
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struct usb_cdc_obex_desc {
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__u8 bLength;
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__u8 bDescriptorType;
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__u8 bDescriptorSubType;
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__le16 bcdVersion;
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} __attribute__ ((packed));
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/*-------------------------------------------------------------------------*/
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/*
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* Class-Specific Control Requests (6.2)
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*
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* section 3.6.2.1 table 4 has the ACM profile, for modems.
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* section 3.8.2 table 10 has the ethernet profile.
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*
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* Microsoft's RNDIS stack for Ethernet is a vendor-specific CDC ACM variant,
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* heavily dependent on the encapsulated (proprietary) command mechanism.
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*/
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#define USB_CDC_SEND_ENCAPSULATED_COMMAND 0x00
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#define USB_CDC_GET_ENCAPSULATED_RESPONSE 0x01
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#define USB_CDC_REQ_SET_LINE_CODING 0x20
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#define USB_CDC_REQ_GET_LINE_CODING 0x21
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#define USB_CDC_REQ_SET_CONTROL_LINE_STATE 0x22
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#define USB_CDC_REQ_SEND_BREAK 0x23
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#define USB_CDC_SET_ETHERNET_MULTICAST_FILTERS 0x40
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#define USB_CDC_SET_ETHERNET_PM_PATTERN_FILTER 0x41
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#define USB_CDC_GET_ETHERNET_PM_PATTERN_FILTER 0x42
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#define USB_CDC_SET_ETHERNET_PACKET_FILTER 0x43
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#define USB_CDC_GET_ETHERNET_STATISTIC 0x44
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/* Line Coding Structure from CDC spec 6.2.13 */
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struct usb_cdc_line_coding {
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__le32 dwDTERate;
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__u8 bCharFormat;
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#define USB_CDC_1_STOP_BITS 0
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#define USB_CDC_1_5_STOP_BITS 1
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#define USB_CDC_2_STOP_BITS 2
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__u8 bParityType;
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#define USB_CDC_NO_PARITY 0
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#define USB_CDC_ODD_PARITY 1
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#define USB_CDC_EVEN_PARITY 2
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#define USB_CDC_MARK_PARITY 3
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#define USB_CDC_SPACE_PARITY 4
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__u8 bDataBits;
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} __attribute__ ((packed));
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/* table 62; bits in multicast filter */
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#define USB_CDC_PACKET_TYPE_PROMISCUOUS (1 << 0)
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#define USB_CDC_PACKET_TYPE_ALL_MULTICAST (1 << 1) /* no filter */
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#define USB_CDC_PACKET_TYPE_DIRECTED (1 << 2)
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#define USB_CDC_PACKET_TYPE_BROADCAST (1 << 3)
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#define USB_CDC_PACKET_TYPE_MULTICAST (1 << 4) /* filtered */
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/*-------------------------------------------------------------------------*/
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/*
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* Class-Specific Notifications (6.3) sent by interrupt transfers
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*
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* section 3.8.2 table 11 of the CDC spec lists Ethernet notifications
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* section 3.6.2.1 table 5 specifies ACM notifications, accepted by RNDIS
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* RNDIS also defines its own bit-incompatible notifications
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*/
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#define USB_CDC_NOTIFY_NETWORK_CONNECTION 0x00
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#define USB_CDC_NOTIFY_RESPONSE_AVAILABLE 0x01
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#define USB_CDC_NOTIFY_SERIAL_STATE 0x20
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#define USB_CDC_NOTIFY_SPEED_CHANGE 0x2a
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struct usb_cdc_notification {
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__u8 bmRequestType;
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__u8 bNotificationType;
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__le16 wValue;
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__le16 wIndex;
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__le16 wLength;
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} __attribute__ ((packed));
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#endif /* __LINUX_USB_CDC_H */
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