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/* SPDX-License-Identifier: MIT */
#ifndef USB_TYPES_H
#define USB_TYPES_H
#include "types.h"
#define USB_REQUEST_TYPE_DIRECTION_SHIFT 7
#define USB_REQUEST_TYPE_DIRECTION(d) ((d) << USB_REQUEST_TYPE_DIRECTION_SHIFT)
#define USB_REQUEST_TYPE_DIRECTION_HOST2DEVICE 0
#define USB_REQUEST_TYPE_DIRECTION_DEVICE2HOST 1
#define USB_REQUEST_TYPE_SHIFT 5
#define USB_REQUEST_TYPE(t) ((t) << USB_REQUEST_TYPE_SHIFT)
#define USB_REQUEST_TYPE_STANDARD USB_REQUEST_TYPE(0b00)
#define USB_REQUEST_TYPE_CLASS USB_REQUEST_TYPE(0b01)
#define USB_REQUEST_TYPE_VENDOR USB_REQUEST_TYPE(0b10)
#define USB_REQUEST_TYPE_MASK USB_REQUEST_TYPE(0b11)
#define USB_REQUEST_TYPE_RECIPIENT_DEVICE 0
#define USB_REQUEST_TYPE_RECIPIENT_INTERFACE 1
#define USB_REQUEST_TYPE_RECIPIENT_ENDPOINT 2
#define USB_REQUEST_TYPE_RECIPIENT_OTHER 3
#define USB_REQUEST_TYPE_RECIPIENT_MASK 0b11
#define USB_REQUEST_GET_STATUS 0x00
#define USB_REQUEST_CLEAR_FEATURE 0x01
#define USB_REQUEST_SET_FEATURE 0x03
#define USB_REQUEST_SET_ADDRESS 0x05
#define USB_REQUEST_GET_DESCRIPTOR 0x06
#define USB_REQUEST_SET_DESCRIPTOR 0x07
#define USB_REQUEST_GET_CONFIGURATION 0x08
#define USB_REQUEST_SET_CONFIGURATION 0x09
#define USB_EP_REQUEST_CLEAR_FEATURE 0x01
#define USB_EP_REQUEST_SET_FEATURE 0x03
#define USB_FEATURE_ENDPOINT_HALT 0x00
#define USB_REQUEST_CDC_SET_LINE_CODING 0x20
#define USB_REQUEST_CDC_GET_LINE_CODING 0x21
#define USB_REQUEST_CDC_SET_CTRL_LINE_STATE 0x22
struct usb_setup_packet_raw {
u8 bmRequestType;
u8 bRequest;
u16 wValue;
u16 wIndex;
u16 wLength;
} PACKED;
struct usb_setup_packet_get_descriptor {
u8 bmRequestType;
u8 bRequest;
u8 index;
u8 type;
u16 language;
u16 wLength;
} PACKED;
struct usb_set_packet_set_address {
u8 bmRequestType;
u8 bRequest;
u16 address;
u16 zero0;
u16 zero1;
} PACKED;
struct usb_set_packet_set_configuration {
u8 bmRequestType;
u8 bRequest;
u16 configuration;
u16 zero0;
u16 zero1;
} PACKED;
struct usb_setup_packet_feature {
u8 bmRequestType;
u8 bRequest;
u16 wFeatureSelector;
u16 wEndpoint;
u16 wLength;
} PACKED;
union usb_setup_packet {
struct usb_setup_packet_raw raw;
struct usb_setup_packet_get_descriptor get_descriptor;
struct usb_set_packet_set_address set_address;
struct usb_set_packet_set_configuration set_configuration;
struct usb_setup_packet_feature feature;
};
#define USB_DEVICE_DESCRIPTOR 0x01
#define USB_CONFIGURATION_DESCRIPTOR 0x02
#define USB_STRING_DESCRIPTOR 0x03
#define USB_INTERFACE_DESCRIPTOR 0x04
#define USB_ENDPOINT_DESCRIPTOR 0x05
#define USB_DEVICE_QUALIFIER_DESCRIPTOR 0x06
#define USB_OTHER_SPEED_CONFIGURATION_DESCRIPTOR 0x07
#define USB_CDC_INTERFACE_FUNCTIONAL_DESCRIPTOR 0x24
#define USB_CDC_UNION_SUBTYPE 0x06
#define USB_CONFIGURATION_SELF_POWERED 0x40
#define USB_CONFIGURATION_ATTRIBUTE_RES1 0x80
#define USB_ENDPOINT_ADDR_IN(ep) (0x80 | (ep))
#define USB_ENDPOINT_ADDR_OUT(ep) (0x00 | (ep))
#define USB_ENDPOINT_ATTR_TYPE_CONTROL 0b00
#define USB_ENDPOINT_ATTR_TYPE_ISOCHRONOUS 0b01
#define USB_ENDPOINT_ATTR_TYPE_BULK 0b10
#define USB_ENDPOINT_ATTR_TYPE_INTERRUPT 0b11
#define USB_LANGID_EN_US 0x0409
struct usb_device_descriptor {
u8 bLength;
u8 bDescriptorType;
u16 bcdUSB;
u8 bDeviceClass;
u8 bDeviceSubClass;
u8 bDeviceProtocol;
u8 bMaxPacketSize0;
u16 idVendor;
u16 idProduct;
u16 bcdDevice;
u8 iManufacturer;
u8 iProduct;
u8 iSerialNumber;
u8 bNumConfigurations;
} PACKED;
struct usb_configuration_descriptor {
u8 bLength;
u8 bDescriptorType;
u16 wTotalLength;
u8 bNumInterfaces;
u8 bConfigurationValue;
u8 iConfiguration;
u8 bmAttributes;
u8 bMaxPower;
} PACKED;
struct usb_interface_descriptor {
u8 bLength;
u8 bDescriptorType;
u8 bInterfaceNumber;
u8 bAlternateSetting;
u8 bNumEndpoints;
u8 bInterfaceClass;
u8 bInterfaceSubClass;
u8 bInterfaceProtocol;
u8 iInterface;
} PACKED;
struct usb_endpoint_descriptor {
u8 bLength;
u8 bDescriptorType;
u8 bEndpointAddress;
u8 bmAttributes;
u16 wMaxPacketSize;
u8 bInterval;
} PACKED;
struct usb_string_descriptor {
u8 bLength;
u8 bDescriptorType;
u16 bString[];
} PACKED;
struct usb_string_descriptor_languages {
u8 bLength;
u8 bDescriptorType;
u16 wLANGID[];
} PACKED;
struct cdc_union_functional_descriptor {
u8 bFunctionLength;
u8 bDescriptorType;
u8 bDescriptorSubtype;
u8 bControlInterface;
u8 bDataInterface;
} PACKED;
struct usb_device_qualifier_descriptor {
u8 bLength;
u8 bDescriptorType;
u16 bcdUSB;
u8 bDeviceClass;
u8 bDeviceSubClass;
u8 bDeviceProtocol;
u8 bMaxPacketSize0;
u8 bNumConfigurations;
u8 bReserved;
} PACKED;
/*
* this macro is required because we need to convert any string literals
* to UTF16 and because we need to calculate the correct total size of the
* string descriptor.
*/
#define make_usb_string_descriptor(str) \
{ \
.bLength = sizeof(struct usb_string_descriptor) + sizeof(u##str), \
.bDescriptorType = USB_STRING_DESCRIPTOR, .bString = u##str \
}
#endif
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