LCOM1920-T02G10

#ifndef _MINIX_USB_H

#define _MINIX_USB_H

#include <sys/types.h>

#include <minix/com.h>

#include <minix/ipc.h>

#include <stdio.h>

#define USB_URBSIZE(data_size, iso_count) \

        (data_size + sizeof(struct usb_urb) + iso_count * \

        sizeof(struct usb_iso_packet_desc))

#define USB_PREPARE_URB(urb, data_size, iso_count) \

        do { \

                if(iso_count)\

                        urb->iso_data.iso_desc = data_size;\

                        urb->urb_size = data_size+sizeof(struct usb_urb)+iso_count * \

                        sizeof(struct usb_iso_packet_desc); \

        } while (0)

struct usb_urb;

struct usb_driver {

        void (*urb_completion)(struct usb_urb *urb);

        void (*connect_device)(unsigned dev_id, unsigned int interfaces);

        void (*disconnect_device)(unsigned dev_id);

};

struct usb_device_id {

        u16_t idVendor;

        u16_t idProduct;

        u32_t bcdDevice;

        u8_t  bDeviceClass;

        u8_t  bDeviceSubClass;

        u8_t  bDeviceProtocol;

        u8_t  bInterfaceClass;

        u8_t  bInterfaceSubClass;

        u8_t  bInterfaceProtocol;

};

struct usb_iso_packet_desc {

        unsigned int offset;

        unsigned int length;                /* expected length */

        unsigned int actual_length;

        unsigned int status;

};

/** isochronous transfer */

#define USB_TRANSFER_ISO 0

/** interrupt transfer */

#define USB_TRANSFER_INT 1

/** control transfer */

#define USB_TRANSFER_CTL 2

/** bulk transfer */

#define USB_TRANSFER_BLK 3

#define USB_IN  0

#define USB_OUT 1

#define USB_INVALID_URB_ID 0

struct usb_urb {

        /* private */

        struct usb_urb *next;

        /** ID identifying the device on HCD side */

        int dev_id;

        int type;

        int endpoint;

        int direction;

        int status;

        int error_count;

        size_t size;

        size_t actual_length;

        void *priv;

        int interval;

        unsigned long transfer_flags;

        /* housekeeping information needed by usb library */

        unsigned urb_id;

        size_t urb_size;

        cp_grant_id_t gid;

        size_t iso_desc_offset;

        int number_of_packets;

        int start_frame;

        char setup_packet[8];

        /* data allways starts here */

        char buffer[1];

};

struct usb_ctrlrequest {

        u8_t bRequestType; 

        u8_t bRequest;

        u16_t wValue;

                u16_t wIndex;

        u16_t wLength;

} __attribute__ ((packed));

#ifdef DEBUG

static void dump_urb(struct usb_urb *urb) {

        printf("================\n");

        printf("DUMP: urb (0x%p)\n", urb);

        printf("================\n");

        printf("= dev_id: %d\n", urb->dev_id);

        printf("= type: %d\n", urb->type);

        printf("= endpoint: %d\n", urb->endpoint);

        printf("= direction: %d\n", urb->direction);

        printf("= status: %d\n", urb->status);

        printf("= error_count: %d\n", urb->error_count);

        printf("= size: %d\n", urb->size);

        printf("= actual_length: %d\n", urb->actual_length);

        printf("= interval %d\n", urb->interval);

        printf("= transfer_flags %x\n", urb->transfer_flags);

        printf("= urb_id = %d\n", urb->urb_id);

        printf("= urb_size = 0x%x\n", urb->urb_size);

        printf("= setup_packet: \n");

        printf("=   bRequestType: 0x%x \n",

            ((struct usb_ctrlrequest *)urb->setup_packet)->bRequestType);

        printf("=   bRequest 0x%x \n",

            ((struct usb_ctrlrequest *)urb->setup_packet)->bRequest);

        printf("=   wValue: 0x%x \n",

            ((struct usb_ctrlrequest *)urb->setup_packet)->wValue);

        printf("=   wIndex: 0x%x \n",

            ((struct usb_ctrlrequest *)urb->setup_packet)->wIndex);

        printf("=   wLength: 0x%x \n",

            ((struct usb_ctrlrequest *)urb->setup_packet)->wLength);

        printf("===============\n");

}

#else

#define dumb_urb(x) 

#endif

/** Submit a URB */

int usb_send_urb(struct usb_urb* urb);

/** Cancels an URB */ 

int usb_cancle_urb(struct usb_urb* urb);

/** Gets the USB device ID of an USB device **/

int usb_get_device_id(int dev_id, struct usb_device_id *usb_device_id);

/* this initializes a session with the HCD */

int usb_init(char *name);

/** This functions handles a message from the HCD */

int usb_handle_msg(struct usb_driver *ubd, message *msg);

/** Lets device driver send HCD various information */

int usb_send_info(long, long);

#endif /* _MINIX_USB_H */