1 files changed, 195 insertions(+), 0 deletions(-)

A include/usb.h

@@ 0,0 1,195 @@
+#include <stdint.h>
+
+#ifndef USB_H
+#define USB_H
+
+typedef enum {
+  USB_SETUP_HOST_TO_DEVICE,
+  USB_SETUP_DEVICE_TO_HOST,
+} usb_setup_command_direction_t;
+
+typedef enum {
+  USB_SETUP_STANDARD,
+  USB_SETUP_CLASS,
+  USB_SETUP_VENDOR,
+  USB_SETUP_RESERVED,
+} usb_setup_command_type_t;
+
+typedef enum {
+  USB_SETUP_DEVICE,
+  USB_SETUP_INTERFACE,
+  USB_SETUP_ENDPOINT,
+  USB_SETUP_OTHER,
+} usb_setup_command_recipient_t;
+
+typedef struct {
+  usb_setup_command_direction_t direction : 1;
+  usb_setup_command_direction_t type : 2;
+  usb_setup_command_direction_t recipient : 5;
+} usb_setup_command_request_type_t;
+
+typedef enum {
+  USB_SETUP_GET_STATUS = 0,
+  USB_SETUP_CLEAR_FEATURE = 1,
+  RESERVED1 = 2,
+  USB_SETUP_SET_FEATURE = 3,
+  RESERVED2 = 4,
+  USB_SETUP_SET_ADDRESS = 5,
+  USB_SETUP_GET_DESCRIPTOR = 6,
+  USB_SETUP_SET_DESCRIPTOR = 7,
+  USB_SETUP_GET_CONFIGURATION = 8,
+  USB_SETUP_SET_CONFIGURATION = 9,
+  USB_SETUP_GET_INTERFACE = 10,
+  USB_SETUP_SET_INTERFACE = 11,
+  USB_SETUP_SYNCH_FRAME = 12,
+} usb_setup_request_t;
+
+typedef enum {
+  DEVICE = 1,
+  CONFIGURATION = 1,
+  STRING = 2,
+  INTERFACE = 3,
+  ENDPOINT = 4,
+  DEVICE_QUALIFIER = 5,
+  OTHER_SPEED_CONFIGURATION = 6,
+  INTERFACE_POWER = 7,
+} usb_descriptor_type_t;
+
+#pragma GCC diagnostic error "-Wpadded"
+typedef struct {
+  usb_setup_command_request_type_t bmRequestType;
+  usb_setup_request_t bRequest;
+  uint16_t wValue;
+  uint16_t wIndex;
+  uint16_t wLength;
+} usb_setup_command_t;
+_Static_assert(sizeof(usb_setup_command_t) == 8, "Size check");
+
+typedef struct {
+  uint8_t bLength;
+  uint8_t bDescriptorType;
+  uint16_t bcdUSB;
+  uint8_t bDeviceClass;
+  uint8_t bDeviceSubClass;
+  uint8_t bDeviceProtocol;
+  uint8_t bMaxPacketSize0;
+  uint16_t idVendor;
+  uint16_t idProduct;
+  uint16_t bcdDevice;
+  uint8_t iManufacturer;
+  uint8_t iProduct;
+  uint8_t iSerialNumber;
+  uint8_t bNumConfigurations;
+} usb_device_descriptor_t;
+_Static_assert(sizeof(usb_device_descriptor_t) == 18, "Size check");
+
+typedef struct {
+  uint8_t bLength;
+  uint8_t bDescriptorType;
+  uint16_t bcdUSB;
+  uint8_t bDeviceClass;
+  uint8_t bDeviceSubClass;
+  uint8_t bDeviceProtocol;
+  uint8_t bMaxPacketSize0;
+  uint8_t bNumConfigurations;
+  uint8_t bReserved;
+} usb_device_qualifier_t;
+_Static_assert(sizeof(usb_device_qualifier_t) == 10, "Size check");
+
+typedef struct {
+  uint8_t reserved1 : 1;
+  uint8_t self_powered : 1;
+  uint8_t remote_wakeup : 1;
+  uint8_t reserved2: 5;
+} usb_configuration_descriptor_attributes;
+
+typedef struct __attribute__((packed)) {
+  uint8_t bLength;
+  uint8_t bDescriptorType;
+  uint16_t wTotalLength;
+  uint8_t bNumInterfaces;
+  uint8_t bConfigurationValue;
+  uint8_t iConfiguration;
+  usb_configuration_descriptor_attributes bmAttributes;
+  uint8_t bMaxPower;
+} usb_configuration_descriptor_t;
+_Static_assert(sizeof(usb_configuration_descriptor_t) == 9, "Size check");
+
+typedef usb_configuration_descriptor_t usb_other_speed_configuration_t;
+
+typedef struct __attribute__((packed)) {
+  uint8_t bLength;
+  uint8_t bDescriptorType;
+  uint8_t bInterfaceNumber;
+  uint8_t bAlternateSetting;
+  uint8_t bNumEndpoints;
+  uint8_t bInterfaceClass;
+  uint8_t bInterfaceSubClass;
+  uint8_t bInterfaceProtocol;
+  uint8_t iInterface;
+} usb_interface_descriptor_t;
+_Static_assert(sizeof(usb_interface_descriptor_t) == 9, "Size check");
+
+typedef enum {
+  USB_ENDPOINT_OUT = 0,
+  USB_ENDPOINT_IN = 1,
+} usb_endpoint_direction_t;
+
+typedef struct {
+  uint8_t direction : 1;
+  uint8_t reserved : 3;
+  uint8_t endpoint_number : 4;
+} usb_endpoint_address_t;
+
+typedef enum {
+  USB_ENDPOINT_TYPE_CONTROL = 0,
+  USB_ENDPOINT_TYPE_ISOCHRONOUS = 1,
+  USB_ENDPOINT_TYPE_BULK = 2,
+  USB_ENDPOINT_TYPE_INTERRUPT = 3,
+} usb_endpoint_transfer_type_t;
+
+typedef enum {
+  USB_ENDPOINT_SYNC_NO_SYNC = 0,
+  USB_ENDPOINT_SYNC_ASYNCHRONOUS = 1,
+  USB_ENDPOINT_SYNC_ADAPTIVE = 2,
+  USB_ENDPOINT_SYNC_SYNCHRONOUS = 3,
+} usb_endpoint_synchronization_type_t;
+
+typedef enum {
+  USB_ENDPOINT_USAGE_DATA = 0,
+  USB_ENDPOINT_USAGE_FEEDBACK = 1,
+  USB_ENDPOINT_USAGE_IMPLICIT_FEEDBACK = 2,
+  USB_ENDPOINT_USAGE_RESERVED = 3,
+} usb_endpoint_usage_type_t;
+
+typedef struct {
+  uint8_t reserved_zeros : 2;
+  usb_endpoint_usage_type_t usage_type : 2;
+  usb_endpoint_synchronization_type_t synchronization_type : 2;
+  usb_endpoint_transfer_type_t transfer_type : 2;
+} usb_endpoint_attributes_t;
+
+typedef struct __attribute__((packed)) {
+  uint8_t bLength;
+  uint8_t bDescriptorType;
+  usb_endpoint_address_t bEndpointAddress;
+  usb_endpoint_attributes_t bmAttributes;
+  uint16_t wMaxPacketSize;
+  uint8_t bInterval;
+} usb_endpoint_descriptor_t;
+_Static_assert(sizeof(usb_endpoint_descriptor_t) == 7, "Size check");
+
+#pragma GCC diagnostic ignored "-Wpadded"
+typedef struct {
+  uint8_t bLength; // lengto of wLANGID + 2
+  uint8_t bDescriptorType;
+  uint16_t *wLANGID; // should have length equal to bLength - 2
+} usb_string_descriptor_zero_t;
+
+typedef struct {
+  uint8_t bLength;
+  uint8_t bDescriptorType;
+  uint8_t *bString; // should have length equal to bLength
+} usb_unicode_string_descriptor_t;
+
+#endif // USB_H