156 lines
3.7 KiB
C
156 lines
3.7 KiB
C
#ifndef _MINIX_USB_H
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#define _MINIX_USB_H
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#include <sys/types.h>
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#include <minix/com.h>
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#include <minix/ipc.h>
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#include <stdio.h>
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#define USB_URBSIZE(data_size, iso_count) \
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(data_size + sizeof(struct usb_urb) + iso_count * \
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sizeof(struct usb_iso_packet_desc))
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#define USB_PREPARE_URB(urb, data_size, iso_count) \
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do { \
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if(iso_count)\
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urb->iso_data.iso_desc = data_size;\
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urb->urb_size = data_size+sizeof(struct usb_urb)+iso_count * \
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sizeof(struct usb_iso_packet_desc); \
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} while (0)
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struct usb_urb;
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struct usb_driver {
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void (*urb_completion)(struct usb_urb *urb);
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void (*connect_device)(unsigned dev_id, unsigned int interfaces);
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void (*disconnect_device)(unsigned dev_id);
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};
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struct usb_device_id {
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u16_t idVendor;
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u16_t idProduct;
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u32_t bcdDevice;
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u8_t bDeviceClass;
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u8_t bDeviceSubClass;
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u8_t bDeviceProtocol;
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u8_t bInterfaceClass;
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u8_t bInterfaceSubClass;
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u8_t bInterfaceProtocol;
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};
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struct usb_iso_packet_desc {
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unsigned int offset;
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unsigned int length; /* expected length */
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unsigned int actual_length;
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unsigned int status;
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};
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/** isochronous transfer */
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#define USB_TRANSFER_ISO 0
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/** interrupt transfer */
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#define USB_TRANSFER_INT 1
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/** control transfer */
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#define USB_TRANSFER_CTL 2
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/** bulk transfer */
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#define USB_TRANSFER_BLK 3
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#define USB_IN 0
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#define USB_OUT 1
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#define USB_INVALID_URB_ID 0
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struct usb_urb {
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/* private */
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struct usb_urb *next;
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/** ID identifying the device on HCD side */
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int dev_id;
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int type;
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int endpoint;
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int direction;
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int status;
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int error_count;
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size_t size;
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size_t actual_length;
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void *priv;
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int interval;
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unsigned long transfer_flags;
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/* housekeeping information needed by usb library */
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unsigned urb_id;
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size_t urb_size;
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cp_grant_id_t gid;
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size_t iso_desc_offset;
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int number_of_packets;
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int start_frame;
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char setup_packet[8];
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/* data allways starts here */
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char buffer[1];
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};
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struct usb_ctrlrequest {
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u8_t bRequestType;
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u8_t bRequest;
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u16_t wValue;
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u16_t wIndex;
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u16_t wLength;
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} __attribute__ ((packed));
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#ifdef DEBUG
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static void dump_urb(struct usb_urb *urb) {
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printf("================\n");
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printf("DUMP: urb (0x%p)\n", urb);
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printf("================\n");
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printf("= dev_id: %d\n", urb->dev_id);
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printf("= type: %d\n", urb->type);
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printf("= endpoint: %d\n", urb->endpoint);
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printf("= direction: %d\n", urb->direction);
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printf("= status: %d\n", urb->status);
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printf("= error_count: %d\n", urb->error_count);
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printf("= size: %d\n", urb->size);
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printf("= actual_length: %d\n", urb->actual_length);
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printf("= interval %d\n", urb->interval);
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printf("= transfer_flags %x\n", urb->transfer_flags);
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printf("= urb_id = %d\n", urb->urb_id);
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printf("= urb_size = 0x%x\n", urb->urb_size);
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printf("= setup_packet: \n");
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printf("= bRequestType: 0x%x \n",
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((struct usb_ctrlrequest *)urb->setup_packet)->bRequestType);
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printf("= bRequest 0x%x \n",
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((struct usb_ctrlrequest *)urb->setup_packet)->bRequest);
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printf("= wValue: 0x%x \n",
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((struct usb_ctrlrequest *)urb->setup_packet)->wValue);
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printf("= wIndex: 0x%x \n",
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((struct usb_ctrlrequest *)urb->setup_packet)->wIndex);
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printf("= wLength: 0x%x \n",
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((struct usb_ctrlrequest *)urb->setup_packet)->wLength);
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printf("===============\n");
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}
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#else
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#define dumb_urb(x)
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#endif
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/** Submit a URB */
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int usb_send_urb(struct usb_urb* urb);
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/** Cancels an URB */
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int usb_cancle_urb(struct usb_urb* urb);
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/** Gets the USB device ID of an USB device **/
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int usb_get_device_id(int dev_id, struct usb_device_id *usb_device_id);
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/* this initializes a session with the HCD */
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int usb_init(char *name);
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/** This functions handles a message from the HCD */
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int usb_handle_msg(struct usb_driver *ubd, message *msg);
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#endif /* _MINIX_USB_H */
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