Subversion Repositories freemyipod

#ifndef __PROTOCOL_USB_USB_H__

#define __PROTOCOL_USB_USB_H__

#include "../global.h"

struct usb_instance;

union __attribute__((packed,aligned(4))) usb_ep0_buffer

{

    struct __attribute__((packed,aligned(4)))

    {

        struct __attribute__((packed))

        {

            enum

            {

                USB_SETUP_BMREQUESTTYPE_RECIPIENT_DEVICE = 0,

                USB_SETUP_BMREQUESTTYPE_RECIPIENT_INTERFACE = 1,

                USB_SETUP_BMREQUESTTYPE_RECIPIENT_ENDPOINT = 2,

                USB_SETUP_BMREQUESTTYPE_RECIPIENT_OTHER = 3,

            } recipient : 5;

            enum

            {

                USB_SETUP_BMREQUESTTYPE_TYPE_STANDARD = 0,

                USB_SETUP_BMREQUESTTYPE_TYPE_CLASS = 1,

                USB_SETUP_BMREQUESTTYPE_TYPE_VENDOR = 2,

            } type : 2;

            enum

            {

                USB_SETUP_BMREQUESTTYPE_DIRECTION_OUT = 0,

                USB_SETUP_BMREQUESTTYPE_DIRECTION_IN = 1,

            } direction : 1;

        } bmRequestType;

        union

        {

            enum __attribute__((packed))

            {

                USB_SETUP_BREQUEST_GET_STATUS = 0,

                USB_SETUP_BREQUEST_CLEAR_FEATURE = 1,

                USB_SETUP_BREQUEST_SET_FEATURE = 3,

                USB_SETUP_BREQUEST_SET_ADDRESS = 5,

                USB_SETUP_BREQUEST_GET_DESCRIPTOR = 6,

                USB_SETUP_BREQUEST_SET_DESCRIPTOR = 7,

                USB_SETUP_BREQUEST_GET_CONFIGURATION = 8,

                USB_SETUP_BREQUEST_SET_CONFIGURATION = 9,

                USB_SETUP_BREQUEST_GET_INTERFACE = 10,

                USB_SETUP_BREQUEST_SET_INTERFACE = 11,

                USB_SETUP_BREQUEST_SYNCH_FRAME = 12,

            } req;

            uint8_t raw;

        } bRequest;

        uint16_t wValue;

        uint16_t wIndex;

        uint16_t wLength;

    } setup;

    uint8_t raw[64];

};

enum __attribute__((packed)) usb_descriptor_type

{

    USB_DESCRIPTOR_TYPE_DEVICE = 1,

    USB_DESCRIPTOR_TYPE_CONFIGURATION = 2,

    USB_DESCRIPTOR_TYPE_STRING = 3,

    USB_DESCRIPTOR_TYPE_INTERFACE = 4,

    USB_DESCRIPTOR_TYPE_ENDPOINT = 5,

    USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER = 6,

    USB_DESCRIPTOR_TYPE_OTHER_SPEED_CONFIG = 7,

    USB_DESCRIPTOR_TYPE_INTERFACE_POWER = 8,

    USB_DESCRIPTOR_TYPE_OTG = 9,

    USB_DESCRIPTOR_TYPE_DEBUG = 10,

    USB_DESCRIPTOR_TYPE_INTERFACE_ASSOCIATION = 11,

};

enum usb_endpoint_direction

{

    USB_ENDPOINT_DIRECTION_OUT = 0,

    USB_ENDPOINT_DIRECTION_IN = 1,

};

union __attribute__((packed)) usb_endpoint_number

{

    struct __attribute__((packed))

    {

        int number : 4;

        int reserved: 3;

        enum usb_endpoint_direction direction : 1;

    };

    uint8_t byte;

};

enum usb_endpoint_type

{

    USB_ENDPOINT_TYPE_CONTROL = 0,

    USB_ENDPOINT_TYPE_ISOCHRONOUS = 1,

    USB_ENDPOINT_TYPE_BULK = 2,

    USB_ENDPOINT_TYPE_INTERRUPT = 3,

};

struct __attribute__((packed)) usb_devicedescriptor

{

    uint8_t bLength;

    enum usb_descriptor_type 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;

};

struct __attribute__((packed)) usb_configurationdescriptor

{

    uint8_t bLength;

    enum usb_descriptor_type bDescriptorType;

    uint16_t wTotalLength;

    uint8_t bNumInterfaces;

    uint8_t bConfigurationValue;

    uint8_t iConfiguration;

    struct __attribute__((packed))

    {

        unsigned int reserved : 5;

        unsigned int remotewakeup : 1;

        unsigned int selfpowered : 1;

        unsigned int buspowered : 1;

    } bmAttributes;

    uint8_t bMaxPower;

};

struct __attribute__((packed)) usb_interfacedescriptor

{

    uint8_t bLength;

    enum usb_descriptor_type bDescriptorType;

    uint8_t bInterfaceNumber;

    uint8_t bAlternateSetting;

    uint8_t bNumEndpoints;

    uint8_t bInterfaceClass;

    uint8_t bInterfaceSubClass;

    uint8_t bInterfaceProtocol;

    uint8_t iInterface;

};

struct __attribute__((packed)) usb_endpointdescriptor

{

    uint8_t bLength;

    enum usb_descriptor_type bDescriptorType;

    union usb_endpoint_number bEndpointAddress;

    struct __attribute__((packed))

    {

        enum

        {

            USB_ENDPOINT_ATTRIBUTE_TYPE_CONTROL = 0,

            USB_ENDPOINT_ATTRIBUTE_TYPE_ISOCHRONOUS = 1,

            USB_ENDPOINT_ATTRIBUTE_TYPE_BULK = 2,

            USB_ENDPOINT_ATTRIBUTE_TYPE_INTERRUPT = 3,

        } type : 2;

        enum

        {

            USB_ENDPOINT_ATTRIBUTE_SYNCTYPE_NOSYNC = 0,

            USB_ENDPOINT_ATTRIBUTE_SYNCTYPE_ASYNC = 1,

            USB_ENDPOINT_ATTRIBUTE_SYNCTYPE_ADAPTIVE = 2,

            USB_ENDPOINT_ATTRIBUTE_SYNCTYPE_SYNC = 3,

        } synctype : 2;

        enum

        {

            USB_ENDPOINT_ATTRIBUTE_USAGE_DATA = 0,

            USB_ENDPOINT_ATTRIBUTE_USAGE_FEEDBACK = 1,

            USB_ENDPOINT_ATTRIBUTE_USAGE_EXPLICIT = 2,

        } usage : 2;

        unsigned int reserved : 2;

    } bmAttributes;

    uint16_t wMaxPacketSize;

    uint8_t bInterval;

};

struct __attribute__((packed)) usb_stringdescriptor

{

    uint8_t bLength;

    enum usb_descriptor_type bDescriptorType;

    uint16_t wString[];

};

struct __attribute__((packed,aligned(4))) usb_endpoint

{

    union usb_endpoint_number number;

    uint8_t reserved1;

    uint8_t reserved2;

    uint8_t reserved3;

    int (*ctrl_request)(const struct usb_instance* data, int interface, int endpoint, union usb_ep0_buffer* request, const void** response);

    void (*xfer_complete)(const struct usb_instance* data, int interface, int endpoint, int bytesleft);

    union __attribute__((packed))

    {

        void (*setup_received)(const struct usb_instance* data, int interface, int endpoint);

        void (*timeout)(const struct usb_instance* data, int interface, int endpoint, int bytesleft);

    };

};

struct __attribute__((packed,aligned(4))) usb_altsetting

{

    void (*set_altsetting)(const struct usb_instance* data, int interface, int altsetting);

    void (*unset_altsetting)(const struct usb_instance* data, int interface, int altsetting);

    uint8_t reserved1;

    uint8_t reserved2;

    uint8_t reserved3;

    uint8_t endpoint_count;

    const struct usb_endpoint* endpoints[];

};

struct __attribute__((packed,aligned(4))) usb_interface

{

    void (*bus_reset)(const struct usb_instance* data, int configuration, int interface, int highspeed);

    int (*ctrl_request)(const struct usb_instance* data, int interface, union usb_ep0_buffer* request, const void** response);

    uint8_t reserved1;

    uint8_t reserved2;

    uint8_t reserved3;

    uint8_t altsetting_count;

    const struct usb_altsetting* altsettings[];

};

struct __attribute__((packed,aligned(4))) usb_configuration

{

    const struct usb_configurationdescriptor* descriptor;

    void (*set_configuration)(const struct usb_instance* data, int configuration);

    void (*unset_configuration)(const struct usb_instance* data, int configuration);

    uint8_t reserved1;

    uint8_t reserved2;

    uint8_t reserved3;

    uint8_t interface_count;

    const struct usb_interface* interfaces[];

};

struct __attribute__((packed,aligned(4))) usb_state

{

    bool (*ep0_rx_callback)(const struct usb_instance* data, union usb_endpoint_number epnum, int bytesleft);

    bool (*ep0_tx_callback)(const struct usb_instance* data, union usb_endpoint_number epnum, int bytesleft);

    const void* ep0_tx_ptr;

    uint16_t ep0_tx_len;

    uint8_t current_address;

    uint8_t current_configuration;

    uint8_t interface_altsetting[];

};

struct __attribute__((packed,aligned(4))) usb_driver

{

    void (*init)(const struct usb_instance* data);

    void (*exit)(const struct usb_instance* data);

    void (*ep0_start_rx)(const struct usb_instance* data, bool non_setup, int len);

    void (*ep0_start_tx)(const struct usb_instance* data, const void* buf, int len);

    void (*start_rx)(const struct usb_instance* data, union usb_endpoint_number ep, void* buf, int size);

    void (*start_tx)(const struct usb_instance* data, union usb_endpoint_number ep, const void* buf, int size);

    int (*get_stall)(const struct usb_instance* data, union usb_endpoint_number ep);

    void (*set_stall)(const struct usb_instance* data, union usb_endpoint_number ep, bool stall);

    void (*set_address)(const struct usb_instance* data, uint8_t address);

    void (*configure_ep)(const struct usb_instance* data, union usb_endpoint_number ep, enum usb_endpoint_type type, int maxpacket);

    void (*unconfigure_ep)(const struct usb_instance* data, union usb_endpoint_number ep);

    int (*get_max_transfer_size)(const struct usb_instance* data, union usb_endpoint_number ep);

};

struct __attribute__((packed,aligned(4))) usb_instance

{

    const struct usb_driver* driver;

    const void* driver_config;

    void* driver_state;

    struct usb_state* state;

    union usb_ep0_buffer* buffer;

    void (*bus_reset)(const struct usb_instance* data, int highspeed);

    int (*ctrl_request)(const struct usb_instance* data, union usb_ep0_buffer* request, const void** response);

    int (*ep0_setup_hook)(const struct usb_instance* data, union usb_ep0_buffer* buf);

    uint8_t configuration_count;

    uint8_t stringdescriptor_count;

    uint8_t reserved1;

    uint8_t reserved2;

    const struct usb_devicedescriptor* devicedescriptor;

    const struct usb_stringdescriptor** stringdescriptors;

    const struct usb_configuration* configurations[];

};

extern void usb_init(const struct usb_instance* data);

extern void usb_exit(const struct usb_instance* data);

extern void usb_handle_bus_reset(const struct usb_instance* data, int highspeed);

extern void usb_handle_timeout(const struct usb_instance* data, union usb_endpoint_number epnum, int bytesleft);

extern void usb_handle_xfer_complete(const struct usb_instance* data, union usb_endpoint_number epnum, int bytesleft);

extern void usb_handle_setup_received(const struct usb_instance* data, union usb_endpoint_number epnum);

extern void usb_ep0_start_rx(const struct usb_instance* data, bool non_setup, int len, bool (*callback)(const struct usb_instance* data, union usb_endpoint_number epnum, int bytesleft));

extern void usb_ep0_start_tx(const struct usb_instance* data, const void* buf, int len, bool (*callback)(const struct usb_instance* data, union usb_endpoint_number epnum, int bytesleft));

extern void usb_start_rx(const struct usb_instance* data, union usb_endpoint_number ep, void* buf, int size);

extern void usb_start_tx(const struct usb_instance* data, union usb_endpoint_number ep, const void* buf, int size);

extern void usb_set_stall(const struct usb_instance* data, union usb_endpoint_number ep, bool stall);

extern void usb_configure_ep(const struct usb_instance* data, union usb_endpoint_number ep, enum usb_endpoint_type type, int maxpacket);

extern void usb_unconfigure_ep(const struct usb_instance* data, union usb_endpoint_number ep);

extern int usb_get_max_transfer_size(const struct usb_instance* data, union usb_endpoint_number ep);

extern bool usb_ep0_tx_callback(const struct usb_instance* data, union usb_endpoint_number epnum, int bytesleft);

extern bool usb_ep0_short_tx_callback(const struct usb_instance* data, union usb_endpoint_number epnum, int bytesleft);

extern bool usb_ep0_ack_callback(const struct usb_instance* data, union usb_endpoint_number epnum, int bytesleft);

#endif