include/linux/usb.h

56  *	with one or more transfer descriptors (TDs) per urb
1351  * urb->transfer_flags:
1358 #define URB_NO_TRANSFER_DMA_MAP	0x0004	/* urb->transfer_dma valid on submit */
1385 struct urb;
1403 typedef void (*usb_complete_t)(struct urb *);
1406  * struct urb - USB Request Block
1585  * when the urb is owned by the hcd, that is, since the call to
1588 struct urb {
1589 	/* private: usb core and host controller only fields in the urb */
1596 	/* public: documented fields in the urb that can be used by drivers */
1597 	struct list_head urb_list;	/* list head for use by the urb's
1630  * usb_fill_control_urb - initializes a control urb
1631  * @urb: pointer to the urb to initialize.
1632  * @dev: pointer to the struct usb_device for this urb.
1640  * @context: what to set the urb context to.
1642  * Initializes a control urb with the proper information needed to submit
1651  * cache. For more information, check &struct urb.
1654 static inline void usb_fill_control_urb(struct urb *urb,
1663 	urb->dev = dev;
1664 	urb->pipe = pipe;
1665 	urb->setup_packet = setup_packet;
1666 	urb->transfer_buffer = transfer_buffer;
1667 	urb->transfer_buffer_length = buffer_length;
1668 	urb->complete = complete_fn;
1669 	urb->context = context;
1673  * usb_fill_bulk_urb - macro to help initialize a bulk urb
1674  * @urb: pointer to the urb to initialize.
1675  * @dev: pointer to the struct usb_device for this urb.
1681  * @context: what to set the urb context to.
1683  * Initializes a bulk urb with the proper information needed to submit it
1689 static inline void usb_fill_bulk_urb(struct urb *urb,
1697 	urb->dev = dev;
1698 	urb->pipe = pipe;
1699 	urb->transfer_buffer = transfer_buffer;
1700 	urb->transfer_buffer_length = buffer_length;
1701 	urb->complete = complete_fn;
1702 	urb->context = context;
1706  * usb_fill_int_urb - macro to help initialize a interrupt urb
1707  * @urb: pointer to the urb to initialize.
1708  * @dev: pointer to the struct usb_device for this urb.
1714  * @context: what to set the urb context to.
1715  * @interval: what to set the urb interval to, encoded like
1718  * Initializes a interrupt urb with the proper information needed to submit
1729 static inline void usb_fill_int_urb(struct urb *urb,
1738 	urb->dev = dev;
1739 	urb->pipe = pipe;
1740 	urb->transfer_buffer = transfer_buffer;
1741 	urb->transfer_buffer_length = buffer_length;
1742 	urb->complete = complete_fn;
1743 	urb->context = context;
1749 		urb->interval = 1 << (interval - 1);
1751 		urb->interval = interval;
1754 	urb->start_frame = -1;
1757 extern void usb_init_urb(struct urb *urb);
1758 extern struct urb *usb_alloc_urb(int iso_packets, gfp_t mem_flags);
1759 extern void usb_free_urb(struct urb *urb);
1761 extern struct urb *usb_get_urb(struct urb *urb);
1762 extern int usb_submit_urb(struct urb *urb, gfp_t mem_flags);
1763 extern int usb_unlink_urb(struct urb *urb);
1764 extern void usb_kill_urb(struct urb *urb);
1765 extern void usb_poison_urb(struct urb *urb);
1766 extern void usb_unpoison_urb(struct urb *urb);
1767 extern void usb_block_urb(struct urb *urb);
1774 extern void usb_anchor_urb(struct urb *urb, struct usb_anchor *anchor);
1775 extern void usb_unanchor_urb(struct urb *urb);
1778 extern struct urb *usb_get_from_anchor(struct usb_anchor *anchor);
1786  * @urb: URB to be checked
1788  * Return: 1 if @urb describes an IN transfer (device-to-host),
1791 static inline int usb_urb_dir_in(struct urb *urb)
1793 	return (urb->transfer_flags & URB_DIR_MASK) == URB_DIR_IN;
1798  * @urb: URB to be checked
1800  * Return: 1 if @urb describes an OUT transfer (host-to-device),
1803 static inline int usb_urb_dir_out(struct urb *urb)
1805 	return (urb->transfer_flags & URB_DIR_MASK) == URB_DIR_OUT;
1809 int usb_urb_ep_type_check(const struct urb *urb);
1913 	struct urb		**urbs;