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+/*
+ * (C) Copyright 2003
+ * Gerry Hamel, geh@ti.com, Texas Instruments
+ *
+ * Based on linux/drivers/usbd/usbd.h
+ *
+ * Copyright (c) 2000, 2001, 2002 Lineo
+ * Copyright (c) 2001 Hewlett Packard
+ *
+ * By:
+ * Stuart Lynne <sl@lineo.com>,
+ * Tom Rushworth <tbr@lineo.com>,
+ * Bruce Balden <balden@lineo.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#ifndef __USBDCORE_H__
+#define __USBDCORE_H__
+
+#include <common.h>
+#include "usbdescriptors.h"
+
+
+#define MAX_URBS_QUEUED 5
+
+
+#if 1
+#define usberr(fmt,args...) serial_printf("ERROR: %s(), %d: "fmt"\n",__FUNCTION__,__LINE__,##args)
+#else
+#define usberr(fmt,args...) do{}while(0)
+#endif
+
+#if 0
+#define usbdbg(fmt,args...) serial_printf("debug: %s(), %d: "fmt"\n",__FUNCTION__,__LINE__,##args)
+#else
+#define usbdbg(fmt,args...) do{}while(0)
+#endif
+
+#if 0
+#define usbinfo(fmt,args...) serial_printf("info: %s(), %d: "fmt"\n",__FUNCTION__,__LINE__,##args)
+#else
+#define usbinfo(fmt,args...) do{}while(0)
+#endif
+
+#ifndef le16_to_cpu
+#define le16_to_cpu(x) (x)
+#endif
+
+#ifndef inb
+#define inb(p) (*(volatile u8*)(p))
+#endif
+
+#ifndef outb
+#define outb(val,p) (*(volatile u8*)(p) = (val))
+#endif
+
+#ifndef inw
+#define inw(p) (*(volatile u16*)(p))
+#endif
+
+#ifndef outw
+#define outw(val,p) (*(volatile u16*)(p) = (val))
+#endif
+
+#ifndef inl
+#define inl(p) (*(volatile u32*)(p))
+#endif
+
+#ifndef outl
+#define outl(val,p) (*(volatile u32*)(p) = (val))
+#endif
+
+#ifndef insw
+#define insw(p,to,len) mmio_insw(p,to,len)
+#endif
+
+#ifndef outsw
+#define outsw(p,from,len) mmio_outsw(p,from,len)
+#endif
+
+#ifndef insb
+#define insb(p,to,len) mmio_insb(p,to,len)
+#endif
+
+#ifndef mmio_insw
+#define mmio_insw(r,b,l) ({ int __i ; \
+ u16 *__b2; \
+ __b2 = (u16 *) b; \
+ for (__i = 0; __i < l; __i++) { \
+ *(__b2 + __i) = inw(r); \
+ }; \
+ })
+#endif
+
+#ifndef mmio_outsw
+#define mmio_outsw(r,b,l) ({ int __i; \
+ u16 *__b2; \
+ __b2 = (u16 *) b; \
+ for (__i = 0; __i < l; __i++) { \
+ outw( *(__b2 + __i), r); \
+ } \
+ })
+#endif
+
+#ifndef mmio_insb
+#define mmio_insb(r,b,l) ({ int __i ; \
+ u8 *__b2; \
+ __b2 = (u8 *) b; \
+ for (__i = 0; __i < l; __i++) { \
+ *(__b2 + __i) = inb(r); \
+ }; \
+ })
+#endif
+
+#ifndef MIN
+#define MIN(a,b) ((a) < (b) ? (a) : (b))
+#endif
+#ifndef MAX
+#define MAX(a,b) ((a) > (b) ? (a) : (b))
+#endif
+
+
+/*
+ * Structure member address manipulation macros.
+ * These are used by client code (code using the urb_link routines), since
+ * the urb_link structure is embedded in the client data structures.
+ *
+ * Note: a macro offsetof equivalent to member_offset is defined in stddef.h
+ * but this is kept here for the sake of portability.
+ *
+ * p2surround returns a pointer to the surrounding structure given
+ * type of the surrounding structure, the name memb of the structure
+ * member pointed at by ptr. For example, if you have:
+ *
+ * struct foo {
+ * int x;
+ * float y;
+ * char z;
+ * } thingy;
+ *
+ * char *cp = &thingy.z;
+ *
+ * then
+ *
+ * &thingy == p2surround(struct foo, z, cp)
+ *
+ * Clear?
+ */
+#define _cv_(ptr) ((char*)(void*)(ptr))
+#define member_offset(type,memb) (_cv_(&(((type*)0)->memb))-(char*)0)
+#define p2surround(type,memb,ptr) ((type*)(void*)(_cv_(ptr)-member_offset(type,memb)))
+
+struct urb;
+
+struct usb_endpoint_instance;
+struct usb_interface_instance;
+struct usb_configuration_instance;
+struct usb_device_instance;
+struct usb_bus_instance;
+
+/*
+ * Device and/or Interface Class codes
+ */
+#define USB_CLASS_PER_INTERFACE 0 /* for DeviceClass */
+#define USB_CLASS_AUDIO 1
+#define USB_CLASS_COMM 2
+#define USB_CLASS_HID 3
+#define USB_CLASS_PHYSICAL 5
+#define USB_CLASS_PRINTER 7
+#define USB_CLASS_MASS_STORAGE 8
+#define USB_CLASS_HUB 9
+#define USB_CLASS_DATA 10
+#define USB_CLASS_APP_SPEC 0xfe
+#define USB_CLASS_VENDOR_SPEC 0xff
+
+/*
+ * USB types
+ */
+#define USB_TYPE_STANDARD (0x00 << 5)
+#define USB_TYPE_CLASS (0x01 << 5)
+#define USB_TYPE_VENDOR (0x02 << 5)
+#define USB_TYPE_RESERVED (0x03 << 5)
+
+/*
+ * USB recipients
+ */
+#define USB_RECIP_DEVICE 0x00
+#define USB_RECIP_INTERFACE 0x01
+#define USB_RECIP_ENDPOINT 0x02
+#define USB_RECIP_OTHER 0x03
+
+/*
+ * USB directions
+ */
+#define USB_DIR_OUT 0
+#define USB_DIR_IN 0x80
+
+/*
+ * Descriptor types
+ */
+#define USB_DT_DEVICE 0x01
+#define USB_DT_CONFIG 0x02
+#define USB_DT_STRING 0x03
+#define USB_DT_INTERFACE 0x04
+#define USB_DT_ENDPOINT 0x05
+
+#define USB_DT_HID (USB_TYPE_CLASS | 0x01)
+#define USB_DT_REPORT (USB_TYPE_CLASS | 0x02)
+#define USB_DT_PHYSICAL (USB_TYPE_CLASS | 0x03)
+#define USB_DT_HUB (USB_TYPE_CLASS | 0x09)
+
+/*
+ * Descriptor sizes per descriptor type
+ */
+#define USB_DT_DEVICE_SIZE 18
+#define USB_DT_CONFIG_SIZE 9
+#define USB_DT_INTERFACE_SIZE 9
+#define USB_DT_ENDPOINT_SIZE 7
+#define USB_DT_ENDPOINT_AUDIO_SIZE 9 /* Audio extension */
+#define USB_DT_HUB_NONVAR_SIZE 7
+#define USB_DT_HID_SIZE 9
+
+/*
+ * Endpoints
+ */
+#define USB_ENDPOINT_NUMBER_MASK 0x0f /* in bEndpointAddress */
+#define USB_ENDPOINT_DIR_MASK 0x80
+
+#define USB_ENDPOINT_XFERTYPE_MASK 0x03 /* in bmAttributes */
+#define USB_ENDPOINT_XFER_CONTROL 0
+#define USB_ENDPOINT_XFER_ISOC 1
+#define USB_ENDPOINT_XFER_BULK 2
+#define USB_ENDPOINT_XFER_INT 3
+
+/*
+ * USB Packet IDs (PIDs)
+ */
+#define USB_PID_UNDEF_0 0xf0
+#define USB_PID_OUT 0xe1
+#define USB_PID_ACK 0xd2
+#define USB_PID_DATA0 0xc3
+#define USB_PID_PING 0xb4 /* USB 2.0 */
+#define USB_PID_SOF 0xa5
+#define USB_PID_NYET 0x96 /* USB 2.0 */
+#define USB_PID_DATA2 0x87 /* USB 2.0 */
+#define USB_PID_SPLIT 0x78 /* USB 2.0 */
+#define USB_PID_IN 0x69
+#define USB_PID_NAK 0x5a
+#define USB_PID_DATA1 0x4b
+#define USB_PID_PREAMBLE 0x3c /* Token mode */
+#define USB_PID_ERR 0x3c /* USB 2.0: handshake mode */
+#define USB_PID_SETUP 0x2d
+#define USB_PID_STALL 0x1e
+#define USB_PID_MDATA 0x0f /* USB 2.0 */
+
+/*
+ * Standard requests
+ */
+#define USB_REQ_GET_STATUS 0x00
+#define USB_REQ_CLEAR_FEATURE 0x01
+#define USB_REQ_SET_FEATURE 0x03
+#define USB_REQ_SET_ADDRESS 0x05
+#define USB_REQ_GET_DESCRIPTOR 0x06
+#define USB_REQ_SET_DESCRIPTOR 0x07
+#define USB_REQ_GET_CONFIGURATION 0x08
+#define USB_REQ_SET_CONFIGURATION 0x09
+#define USB_REQ_GET_INTERFACE 0x0A
+#define USB_REQ_SET_INTERFACE 0x0B
+#define USB_REQ_SYNCH_FRAME 0x0C
+
+#define USBD_DEVICE_REQUESTS(x) (((unsigned int)x <= USB_REQ_SYNCH_FRAME) ? usbd_device_requests[x] : "UNKNOWN")
+
+/*
+ * HID requests
+ */
+#define USB_REQ_GET_REPORT 0x01
+#define USB_REQ_GET_IDLE 0x02
+#define USB_REQ_GET_PROTOCOL 0x03
+#define USB_REQ_SET_REPORT 0x09
+#define USB_REQ_SET_IDLE 0x0A
+#define USB_REQ_SET_PROTOCOL 0x0B
+
+
+/*
+ * USB Spec Release number
+ */
+
+#define USB_BCD_VERSION 0x0110
+
+
+/*
+ * Device Requests (c.f Table 9-2)
+ */
+
+#define USB_REQ_DIRECTION_MASK 0x80
+#define USB_REQ_TYPE_MASK 0x60
+#define USB_REQ_RECIPIENT_MASK 0x1f
+
+#define USB_REQ_DEVICE2HOST 0x80
+#define USB_REQ_HOST2DEVICE 0x00
+
+#define USB_REQ_TYPE_STANDARD 0x00
+#define USB_REQ_TYPE_CLASS 0x20
+#define USB_REQ_TYPE_VENDOR 0x40
+
+#define USB_REQ_RECIPIENT_DEVICE 0x00
+#define USB_REQ_RECIPIENT_INTERFACE 0x01
+#define USB_REQ_RECIPIENT_ENDPOINT 0x02
+#define USB_REQ_RECIPIENT_OTHER 0x03
+
+/*
+ * get status bits
+ */
+
+#define USB_STATUS_SELFPOWERED 0x01
+#define USB_STATUS_REMOTEWAKEUP 0x02
+
+#define USB_STATUS_HALT 0x01
+
+/*
+ * descriptor types
+ */
+
+#define USB_DESCRIPTOR_TYPE_DEVICE 0x01
+#define USB_DESCRIPTOR_TYPE_CONFIGURATION 0x02
+#define USB_DESCRIPTOR_TYPE_STRING 0x03
+#define USB_DESCRIPTOR_TYPE_INTERFACE 0x04
+#define USB_DESCRIPTOR_TYPE_ENDPOINT 0x05
+#define USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER 0x06
+#define USB_DESCRIPTOR_TYPE_OTHER_SPEED_CONFIGURATION 0x07
+#define USB_DESCRIPTOR_TYPE_INTERFACE_POWER 0x08
+#define USB_DESCRIPTOR_TYPE_HID 0x21
+#define USB_DESCRIPTOR_TYPE_REPORT 0x22
+
+#define USBD_DEVICE_DESCRIPTORS(x) (((unsigned int)x <= USB_DESCRIPTOR_TYPE_INTERFACE_POWER) ? \
+ usbd_device_descriptors[x] : "UNKNOWN")
+
+/*
+ * standard feature selectors
+ */
+#define USB_ENDPOINT_HALT 0x00
+#define USB_DEVICE_REMOTE_WAKEUP 0x01
+#define USB_TEST_MODE 0x02
+
+
+/* USB Requests
+ *
+ */
+
+struct usb_device_request {
+ u8 bmRequestType;
+ u8 bRequest;
+ u16 wValue;
+ u16 wIndex;
+ u16 wLength;
+} __attribute__ ((packed));
+
+
+/* USB Status
+ *
+ */
+typedef enum urb_send_status {
+ SEND_IN_PROGRESS,
+ SEND_FINISHED_OK,
+ SEND_FINISHED_ERROR,
+ RECV_READY,
+ RECV_OK,
+ RECV_ERROR
+} urb_send_status_t;
+
+/*
+ * Device State (c.f USB Spec 2.0 Figure 9-1)
+ *
+ * What state the usb device is in.
+ *
+ * Note the state does not change if the device is suspended, we simply set a
+ * flag to show that it is suspended.
+ *
+ */
+typedef enum usb_device_state {
+ STATE_INIT, /* just initialized */
+ STATE_CREATED, /* just created */
+ STATE_ATTACHED, /* we are attached */
+ STATE_POWERED, /* we have seen power indication (electrical bus signal) */
+ STATE_DEFAULT, /* we been reset */
+ STATE_ADDRESSED, /* we have been addressed (in default configuration) */
+ STATE_CONFIGURED, /* we have seen a set configuration device command */
+ STATE_UNKNOWN, /* destroyed */
+} usb_device_state_t;
+
+#define USBD_DEVICE_STATE(x) (((unsigned int)x <= STATE_UNKNOWN) ? usbd_device_states[x] : "UNKNOWN")
+
+/*
+ * Device status
+ *
+ * Overall state
+ */
+typedef enum usb_device_status {
+ USBD_OPENING, /* we are currently opening */
+ USBD_OK, /* ok to use */
+ USBD_SUSPENDED, /* we are currently suspended */
+ USBD_CLOSING, /* we are currently closing */
+} usb_device_status_t;
+
+#define USBD_DEVICE_STATUS(x) (((unsigned int)x <= USBD_CLOSING) ? usbd_device_status[x] : "UNKNOWN")
+
+/*
+ * Device Events
+ *
+ * These are defined in the USB Spec (c.f USB Spec 2.0 Figure 9-1).
+ *
+ * There are additional events defined to handle some extra actions we need
+ * to have handled.
+ *
+ */
+typedef enum usb_device_event {
+
+ DEVICE_UNKNOWN, /* bi - unknown event */
+ DEVICE_INIT, /* bi - initialize */
+ DEVICE_CREATE, /* bi - */
+ DEVICE_HUB_CONFIGURED, /* bi - bus has been plugged int */
+ DEVICE_RESET, /* bi - hub has powered our port */
+
+ DEVICE_ADDRESS_ASSIGNED, /* ep0 - set address setup received */
+ DEVICE_CONFIGURED, /* ep0 - set configure setup received */
+ DEVICE_SET_INTERFACE, /* ep0 - set interface setup received */
+
+ DEVICE_SET_FEATURE, /* ep0 - set feature setup received */
+ DEVICE_CLEAR_FEATURE, /* ep0 - clear feature setup received */
+
+ DEVICE_DE_CONFIGURED, /* ep0 - set configure setup received for ?? */
+
+ DEVICE_BUS_INACTIVE, /* bi - bus in inactive (no SOF packets) */
+ DEVICE_BUS_ACTIVITY, /* bi - bus is active again */
+
+ DEVICE_POWER_INTERRUPTION, /* bi - hub has depowered our port */
+ DEVICE_HUB_RESET, /* bi - bus has been unplugged */
+ DEVICE_DESTROY, /* bi - device instance should be destroyed */
+
+ DEVICE_HOTPLUG, /* bi - a hotplug event has occured */
+
+ DEVICE_FUNCTION_PRIVATE, /* function - private */
+
+} usb_device_event_t;
+
+
+typedef struct urb_link {
+ struct urb_link *next;
+ struct urb_link *prev;
+} urb_link;
+
+/* USB Data structure - for passing data around.
+ *
+ * This is used for both sending and receiving data.
+ *
+ * The callback function is used to let the function driver know when
+ * transmitted data has been sent.
+ *
+ * The callback function is set by the alloc_recv function when an urb is
+ * allocated for receiving data for an endpoint and used to call the
+ * function driver to inform it that data has arrived.
+ */
+
+#define URB_BUF_SIZE 128 /* in linux we'd malloc this, but in u-boot we prefer static data */
+struct urb {
+
+ struct usb_endpoint_instance *endpoint;
+ struct usb_device_instance *device;
+
+ struct usb_device_request device_request; /* contents of received SETUP packet */
+
+ struct urb_link link; /* embedded struct for circular doubly linked list of urbs */
+
+ u8* buffer;
+ unsigned int buffer_length;
+ unsigned int actual_length;
+
+ urb_send_status_t status;
+ int data;
+
+ u16 buffer_data[URB_BUF_SIZE]; /* data received (OUT) or being sent (IN) */
+};
+
+/* Endpoint configuration
+ *
+ * Per endpoint configuration data. Used to track which function driver owns
+ * an endpoint.
+ *
+ */
+struct usb_endpoint_instance {
+ int endpoint_address; /* logical endpoint address */
+
+ /* control */
+ int status; /* halted */
+ int state; /* available for use by bus interface driver */
+
+ /* receive side */
+ struct urb_link rcv; /* received urbs */
+ struct urb_link rdy; /* empty urbs ready to receive */
+ struct urb *rcv_urb; /* active urb */
+ int rcv_attributes; /* copy of bmAttributes from endpoint descriptor */
+ int rcv_packetSize; /* maximum packet size from endpoint descriptor */
+ int rcv_transferSize; /* maximum transfer size from function driver */
+ int rcv_queue;
+
+ /* transmit side */
+ struct urb_link tx; /* urbs ready to transmit */
+ struct urb_link done; /* transmitted urbs */
+ struct urb *tx_urb; /* active urb */
+ int tx_attributes; /* copy of bmAttributes from endpoint descriptor */
+ int tx_packetSize; /* maximum packet size from endpoint descriptor */
+ int tx_transferSize; /* maximum transfer size from function driver */
+ int tx_queue;
+
+ int sent; /* data already sent */
+ int last; /* data sent in last packet XXX do we need this */
+};
+
+struct usb_alternate_instance {
+ struct usb_interface_descriptor *interface_descriptor;
+
+ int endpoints;
+ int *endpoint_transfersize_array;
+ struct usb_endpoint_descriptor **endpoints_descriptor_array;
+};
+
+struct usb_interface_instance {
+ int alternates;
+ struct usb_alternate_instance *alternates_instance_array;
+};
+
+struct usb_configuration_instance {
+ int interfaces;
+ struct usb_configuration_descriptor *configuration_descriptor;
+ struct usb_interface_instance *interface_instance_array;
+};
+
+
+/* USB Device Instance
+ *
+ * For each physical bus interface we create a logical device structure. This
+ * tracks all of the required state to track the USB HOST's view of the device.
+ *
+ * Keep track of the device configuration for a real physical bus interface,
+ * this includes the bus interface, multiple function drivers, the current
+ * configuration and the current state.
+ *
+ * This will show:
+ * the specific bus interface driver
+ * the default endpoint 0 driver
+ * the configured function driver
+ * device state
+ * device status
+ * endpoint list
+ */
+
+struct usb_device_instance {
+
+ /* generic */
+ char *name;
+ struct usb_device_descriptor *device_descriptor; /* per device descriptor */
+
+ void (*event) (struct usb_device_instance *device, usb_device_event_t event, int data);
+
+ /* bus interface */
+ struct usb_bus_instance *bus; /* which bus interface driver */
+
+ /* configuration descriptors */
+ int configurations;
+ struct usb_configuration_instance *configuration_instance_array;
+
+ /* device state */
+ usb_device_state_t device_state; /* current USB Device state */
+ usb_device_state_t device_previous_state; /* current USB Device state */
+
+ u8 address; /* current address (zero is default) */
+ u8 configuration; /* current show configuration (zero is default) */
+ u8 interface; /* current interface (zero is default) */
+ u8 alternate; /* alternate flag */
+
+ usb_device_status_t status; /* device status */
+
+ int urbs_queued; /* number of submitted urbs */
+
+ /* Shouldn't need to make this atomic, all we need is a change indicator */
+ unsigned long usbd_rxtx_timestamp;
+ unsigned long usbd_last_rxtx_timestamp;
+
+};
+
+/* Bus Interface configuration structure
+ *
+ * This is allocated for each configured instance of a bus interface driver.
+ *
+ * The privdata pointer may be used by the bus interface driver to store private
+ * per instance state information.
+ */
+struct usb_bus_instance {
+
+ struct usb_device_instance *device;
+ struct usb_endpoint_instance *endpoint_array; /* array of available configured endpoints */
+
+ int max_endpoints; /* maximimum number of rx enpoints */
+ unsigned char maxpacketsize;
+
+ unsigned int serial_number;
+ char *serial_number_str;
+ void *privdata; /* private data for the bus interface */
+
+};
+
+extern char *usbd_device_events[];
+extern char *usbd_device_states[];
+extern char *usbd_device_status[];
+extern char *usbd_device_requests[];
+extern char *usbd_device_descriptors[];
+
+void urb_link_init (urb_link * ul);
+void urb_detach (struct urb *urb);
+urb_link *first_urb_link (urb_link * hd);
+struct urb *first_urb (urb_link * hd);
+struct urb *first_urb_detached (urb_link * hd);
+void urb_append (urb_link * hd, struct urb *urb);
+
+struct urb *usbd_alloc_urb (struct usb_device_instance *device, struct usb_endpoint_instance *endpoint);
+void usbd_dealloc_urb (struct urb *urb);
+
+/*
+ * usbd_device_event is used by bus interface drivers to tell the higher layers that
+ * certain events have taken place.
+ */
+void usbd_device_event_irq (struct usb_device_instance *conf, usb_device_event_t, int);
+void usbd_device_event (struct usb_device_instance *conf, usb_device_event_t, int);
+
+/* descriptors
+ *
+ * Various ways of finding descriptors based on the current device and any
+ * possible configuration / interface / endpoint for it.
+ */
+struct usb_configuration_descriptor *usbd_device_configuration_descriptor (struct usb_device_instance *, int, int);
+struct usb_function_instance *usbd_device_function_instance (struct usb_device_instance *, unsigned int);
+struct usb_interface_instance *usbd_device_interface_instance (struct usb_device_instance *, int, int, int);
+struct usb_alternate_instance *usbd_device_alternate_instance (struct usb_device_instance *, int, int, int, int);
+struct usb_interface_descriptor *usbd_device_interface_descriptor (struct usb_device_instance *, int, int, int, int);
+struct usb_endpoint_descriptor *usbd_device_endpoint_descriptor_index (struct usb_device_instance *, int, int, int, int, int);
+struct usb_class_descriptor *usbd_device_class_descriptor_index (struct usb_device_instance *, int, int, int, int, int);
+struct usb_class_report_descriptor *usbd_device_class_report_descriptor_index( struct usb_device_instance *, int , int , int , int , int );
+struct usb_endpoint_descriptor *usbd_device_endpoint_descriptor (struct usb_device_instance *, int, int, int, int, int);
+int usbd_device_endpoint_transfersize (struct usb_device_instance *, int, int, int, int, int);
+struct usb_string_descriptor *usbd_get_string (u8);
+struct usb_device_descriptor *usbd_device_device_descriptor (struct usb_device_instance *, int);
+
+int usbd_endpoint_halted (struct usb_device_instance *device, int endpoint);
+void usbd_rcv_complete(struct usb_endpoint_instance *endpoint, int len, int urb_bad);
+void usbd_tx_complete (struct usb_endpoint_instance *endpoint);
+
+#endif