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freebsd-skq/sys/dev/usb/usbdi.h
alfred f688e04d86 Missed this file for r195963: 
USB core:
  - add support for defragging of written device data.
  - improve handling of alternate settings in device side mode.
  - correct return value from usbd_get_no_alts() function.
  - reported by: HPS
  - P4 ID: 166156, 166168

  - report USB device release information to devd and pnpinfo.
  - reported by: MIHIRA Sanpei Yoshiro
  - P4 ID: 166221

Submitted by:	hps
Approved by:	re
2009-07-30 00:57:54 +00:00

539 lines
19 KiB
C
Raw Blame History

/*-
* Copyright (c) 2009 Andrew Thompson
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _USB_USBDI_H_
#define _USB_USBDI_H_
struct usb_fifo;
struct usb_xfer;
struct usb_device;
struct usb_interface;
struct usb_endpoint;
struct usb_page_cache;
struct usb_page_search;
struct usb_process;
struct usb_proc_msg;
struct usb_mbuf;
struct mbuf;
typedef enum { /* keep in sync with usb_errstr_table */
USB_ERR_NORMAL_COMPLETION = 0,
USB_ERR_PENDING_REQUESTS, /* 1 */
USB_ERR_NOT_STARTED, /* 2 */
USB_ERR_INVAL, /* 3 */
USB_ERR_NOMEM, /* 4 */
USB_ERR_CANCELLED, /* 5 */
USB_ERR_BAD_ADDRESS, /* 6 */
USB_ERR_BAD_BUFSIZE, /* 7 */
USB_ERR_BAD_FLAG, /* 8 */
USB_ERR_NO_CALLBACK, /* 9 */
USB_ERR_IN_USE, /* 10 */
USB_ERR_NO_ADDR, /* 11 */
USB_ERR_NO_PIPE, /* 12 */
USB_ERR_ZERO_NFRAMES, /* 13 */
USB_ERR_ZERO_MAXP, /* 14 */
USB_ERR_SET_ADDR_FAILED, /* 15 */
USB_ERR_NO_POWER, /* 16 */
USB_ERR_TOO_DEEP, /* 17 */
USB_ERR_IOERROR, /* 18 */
USB_ERR_NOT_CONFIGURED, /* 19 */
USB_ERR_TIMEOUT, /* 20 */
USB_ERR_SHORT_XFER, /* 21 */
USB_ERR_STALLED, /* 22 */
USB_ERR_INTERRUPTED, /* 23 */
USB_ERR_DMA_LOAD_FAILED, /* 24 */
USB_ERR_BAD_CONTEXT, /* 25 */
USB_ERR_NO_ROOT_HUB, /* 26 */
USB_ERR_NO_INTR_THREAD, /* 27 */
USB_ERR_NOT_LOCKED, /* 28 */
USB_ERR_MAX
} usb_error_t;
/*
* Flags for transfers
*/
#define USB_FORCE_SHORT_XFER 0x0001 /* force a short transmit last */
#define USB_SHORT_XFER_OK 0x0004 /* allow short reads */
#define USB_DELAY_STATUS_STAGE 0x0010 /* insert delay before STATUS stage */
#define USB_USER_DATA_PTR 0x0020 /* internal flag */
#define USB_MULTI_SHORT_OK 0x0040 /* allow multiple short frames */
#define USB_MANUAL_STATUS 0x0080 /* manual ctrl status */
#define USB_NO_TIMEOUT 0
#define USB_DEFAULT_TIMEOUT 5000 /* 5000 ms = 5 seconds */
#if defined(_KERNEL)
/* typedefs */
typedef void (usb_callback_t)(struct usb_xfer *, usb_error_t);
typedef void (usb_proc_callback_t)(struct usb_proc_msg *);
typedef usb_error_t (usb_handle_req_t)(struct usb_device *,
struct usb_device_request *, const void **, uint16_t *);
typedef int (usb_fifo_open_t)(struct usb_fifo *fifo, int fflags);
typedef void (usb_fifo_close_t)(struct usb_fifo *fifo, int fflags);
typedef int (usb_fifo_ioctl_t)(struct usb_fifo *fifo, u_long cmd, void *addr, int fflags);
typedef void (usb_fifo_cmd_t)(struct usb_fifo *fifo);
typedef void (usb_fifo_filter_t)(struct usb_fifo *fifo, struct usb_mbuf *m);
/*
* The following macros are used used to convert milliseconds into
* HZ. We use 1024 instead of 1000 milliseconds per second to save a
* full division.
*/
#define USB_MS_HZ 1024
#define USB_MS_TO_TICKS(ms) \
(((uint32_t)((((uint32_t)(ms)) * ((uint32_t)(hz))) + USB_MS_HZ - 1)) / USB_MS_HZ)
/*
* Common queue structure for USB transfers.
*/
struct usb_xfer_queue {
TAILQ_HEAD(, usb_xfer) head;
struct usb_xfer *curr; /* current USB transfer processed */
void (*command) (struct usb_xfer_queue *pq);
uint8_t recurse_1:1;
uint8_t recurse_2:1;
};
/*
* The following structure defines an USB endpoint
* USB endpoint.
*/
struct usb_endpoint {
struct usb_xfer_queue endpoint_q; /* queue of USB transfers */
struct usb_endpoint_descriptor *edesc;
struct usb_pipe_methods *methods; /* set by HC driver */
uint16_t isoc_next;
uint16_t refcount;
uint8_t toggle_next:1; /* next data toggle value */
uint8_t is_stalled:1; /* set if endpoint is stalled */
uint8_t is_synced:1; /* set if we a synchronised */
uint8_t unused:5;
uint8_t iface_index; /* not used by "default endpoint" */
};
/*
* The following structure defines an USB interface.
*/
struct usb_interface {
struct usb_interface_descriptor *idesc;
device_t subdev;
uint8_t alt_index;
uint8_t parent_iface_index;
/* Linux compat */
struct usb_host_interface *altsetting;
struct usb_host_interface *cur_altsetting;
struct usb_device *linux_udev;
void *bsd_priv_sc; /* device specific information */
uint8_t num_altsetting; /* number of alternate settings */
uint8_t bsd_iface_index;
};
/*
* The following structure defines a set of USB transfer flags.
*/
struct usb_xfer_flags {
uint8_t force_short_xfer:1; /* force a short transmit transfer
* last */
uint8_t short_xfer_ok:1; /* allow short receive transfers */
uint8_t short_frames_ok:1; /* allow short frames */
uint8_t pipe_bof:1; /* block pipe on failure */
uint8_t proxy_buffer:1; /* makes buffer size a factor of
* "max_frame_size" */
uint8_t ext_buffer:1; /* uses external DMA buffer */
uint8_t manual_status:1; /* non automatic status stage on
* control transfers */
uint8_t no_pipe_ok:1; /* set if "USB_ERR_NO_PIPE" error can
* be ignored */
uint8_t stall_pipe:1; /* set if the endpoint belonging to
* this USB transfer should be stalled
* before starting this transfer! */
};
/*
* The following structure define an USB configuration, that basically
* is used when setting up an USB transfer.
*/
struct usb_config {
usb_callback_t *callback; /* USB transfer callback */
usb_frlength_t bufsize; /* total pipe buffer size in bytes */
usb_frcount_t frames; /* maximum number of USB frames */
usb_timeout_t interval; /* interval in milliseconds */
#define USB_DEFAULT_INTERVAL 0
usb_timeout_t timeout; /* transfer timeout in milliseconds */
struct usb_xfer_flags flags; /* transfer flags */
enum usb_hc_mode usb_mode; /* host or device mode */
uint8_t type; /* pipe type */
uint8_t endpoint; /* pipe number */
uint8_t direction; /* pipe direction */
uint8_t ep_index; /* pipe index match to use */
uint8_t if_index; /* "ifaces" index to use */
};
/*
* The following structure is used when looking up an USB driver for
* an USB device. It is inspired by the Linux structure called
* "usb_device_id".
*/
struct usb_device_id {
/* Hook for driver specific information */
unsigned long driver_info;
/* Used for product specific matches; the BCD range is inclusive */
uint16_t idVendor;
uint16_t idProduct;
uint16_t bcdDevice_lo;
uint16_t bcdDevice_hi;
/* Used for device class matches */
uint8_t bDeviceClass;
uint8_t bDeviceSubClass;
uint8_t bDeviceProtocol;
/* Used for interface class matches */
uint8_t bInterfaceClass;
uint8_t bInterfaceSubClass;
uint8_t bInterfaceProtocol;
/* Select which fields to match against */
uint8_t match_flag_vendor:1;
uint8_t match_flag_product:1;
uint8_t match_flag_dev_lo:1;
uint8_t match_flag_dev_hi:1;
uint8_t match_flag_dev_class:1;
uint8_t match_flag_dev_subclass:1;
uint8_t match_flag_dev_protocol:1;
uint8_t match_flag_int_class:1;
uint8_t match_flag_int_subclass:1;
uint8_t match_flag_int_protocol:1;
#if USB_HAVE_COMPAT_LINUX
/* which fields to match against */
uint16_t match_flags;
#define USB_DEVICE_ID_MATCH_VENDOR 0x0001
#define USB_DEVICE_ID_MATCH_PRODUCT 0x0002
#define USB_DEVICE_ID_MATCH_DEV_LO 0x0004
#define USB_DEVICE_ID_MATCH_DEV_HI 0x0008
#define USB_DEVICE_ID_MATCH_DEV_CLASS 0x0010
#define USB_DEVICE_ID_MATCH_DEV_SUBCLASS 0x0020
#define USB_DEVICE_ID_MATCH_DEV_PROTOCOL 0x0040
#define USB_DEVICE_ID_MATCH_INT_CLASS 0x0080
#define USB_DEVICE_ID_MATCH_INT_SUBCLASS 0x0100
#define USB_DEVICE_ID_MATCH_INT_PROTOCOL 0x0200
#endif
};
#define USB_VENDOR(vend) \
.match_flag_vendor = 1, .idVendor = (vend)
#define USB_PRODUCT(prod) \
.match_flag_product = 1, .idProduct = (prod)
#define USB_VP(vend,prod) \
USB_VENDOR(vend), USB_PRODUCT(prod)
#define USB_VPI(vend,prod,info) \
USB_VENDOR(vend), USB_PRODUCT(prod), USB_DRIVER_INFO(info)
#define USB_DEV_BCD_GTEQ(lo) /* greater than or equal */ \
.match_flag_dev_lo = 1, .bcdDevice_lo = (lo)
#define USB_DEV_BCD_LTEQ(hi) /* less than or equal */ \
.match_flag_dev_hi = 1, .bcdDevice_hi = (hi)
#define USB_DEV_CLASS(dc) \
.match_flag_dev_class = 1, .bDeviceClass = (dc)
#define USB_DEV_SUBCLASS(dsc) \
.match_flag_dev_subclass = 1, .bDeviceSubClass = (dsc)
#define USB_DEV_PROTOCOL(dp) \
.match_flag_dev_protocol = 1, .bDeviceProtocol = (dp)
#define USB_IFACE_CLASS(ic) \
.match_flag_int_class = 1, .bInterfaceClass = (ic)
#define USB_IFACE_SUBCLASS(isc) \
.match_flag_int_subclass = 1, .bInterfaceSubClass = (isc)
#define USB_IFACE_PROTOCOL(ip) \
.match_flag_int_protocol = 1, .bInterfaceProtocol = (ip)
#define USB_IF_CSI(class,subclass,info) \
USB_IFACE_CLASS(class), USB_IFACE_SUBCLASS(subclass), USB_DRIVER_INFO(info)
#define USB_DRIVER_INFO(n) \
.driver_info = (n)
#define USB_GET_DRIVER_INFO(did) \
(did)->driver_info
/*
* The following structure keeps information that is used to match
* against an array of "usb_device_id" elements.
*/
struct usbd_lookup_info {
uint16_t idVendor;
uint16_t idProduct;
uint16_t bcdDevice;
uint8_t bDeviceClass;
uint8_t bDeviceSubClass;
uint8_t bDeviceProtocol;
uint8_t bInterfaceClass;
uint8_t bInterfaceSubClass;
uint8_t bInterfaceProtocol;
uint8_t bIfaceIndex;
uint8_t bIfaceNum;
uint8_t bConfigIndex;
uint8_t bConfigNum;
};
/* Structure used by probe and attach */
struct usb_attach_arg {
struct usbd_lookup_info info;
device_t temp_dev; /* for internal use */
unsigned long driver_info; /* for internal use */
void *driver_ivar;
struct usb_device *device; /* current device */
struct usb_interface *iface; /* current interface */
enum usb_hc_mode usb_mode; /* host or device mode */
uint8_t port;
uint8_t use_generic; /* hint for generic drivers */
};
/*
* The following is a wrapper for the callout structure to ease
* porting the code to other platforms.
*/
struct usb_callout {
struct callout co;
};
#define usb_callout_init_mtx(c,m,f) callout_init_mtx(&(c)->co,m,f)
#define usb_callout_reset(c,t,f,d) callout_reset(&(c)->co,t,f,d)
#define usb_callout_stop(c) callout_stop(&(c)->co)
#define usb_callout_drain(c) callout_drain(&(c)->co)
#define usb_callout_pending(c) callout_pending(&(c)->co)
/* USB transfer states */
#define USB_ST_SETUP 0
#define USB_ST_TRANSFERRED 1
#define USB_ST_ERROR 2
/* USB handle request states */
#define USB_HR_NOT_COMPLETE 0
#define USB_HR_COMPLETE_OK 1
#define USB_HR_COMPLETE_ERR 2
/*
* The following macro will return the current state of an USB
* transfer like defined by the "USB_ST_XXX" enums.
*/
#define USB_GET_STATE(xfer) (usbd_xfer_state(xfer))
/*
* The following structure defines the USB process message header.
*/
struct usb_proc_msg {
TAILQ_ENTRY(usb_proc_msg) pm_qentry;
usb_proc_callback_t *pm_callback;
usb_size_t pm_num;
};
#define USB_FIFO_TX 0
#define USB_FIFO_RX 1
/*
* Locking note for the following functions. All the
* "usb_fifo_cmd_t" and "usb_fifo_filter_t" functions are called
* locked. The others are called unlocked.
*/
struct usb_fifo_methods {
usb_fifo_open_t *f_open;
usb_fifo_close_t *f_close;
usb_fifo_ioctl_t *f_ioctl;
/*
* NOTE: The post-ioctl callback is called after the USB reference
* gets locked in the IOCTL handler:
*/
usb_fifo_ioctl_t *f_ioctl_post;
usb_fifo_cmd_t *f_start_read;
usb_fifo_cmd_t *f_stop_read;
usb_fifo_cmd_t *f_start_write;
usb_fifo_cmd_t *f_stop_write;
usb_fifo_filter_t *f_filter_read;
usb_fifo_filter_t *f_filter_write;
const char *basename[4];
const char *postfix[4];
};
struct usb_fifo_sc {
struct usb_fifo *fp[2];
struct cdev* dev;
};
const char *usbd_errstr(usb_error_t error);
void *usbd_find_descriptor(struct usb_device *udev, void *id,
uint8_t iface_index, uint8_t type, uint8_t type_mask,
uint8_t subtype, uint8_t subtype_mask);
struct usb_config_descriptor *usbd_get_config_descriptor(
struct usb_device *udev);
struct usb_device_descriptor *usbd_get_device_descriptor(
struct usb_device *udev);
struct usb_interface *usbd_get_iface(struct usb_device *udev,
uint8_t iface_index);
struct usb_interface_descriptor *usbd_get_interface_descriptor(
struct usb_interface *iface);
struct usb_endpoint *usbd_get_endpoint(struct usb_device *udev, uint8_t iface_index,
const struct usb_config *setup);
struct usb_endpoint *usbd_get_ep_by_addr(struct usb_device *udev, uint8_t ea_val);
usb_error_t usbd_interface_count(struct usb_device *udev, uint8_t *count);
enum usb_hc_mode usbd_get_mode(struct usb_device *udev);
enum usb_dev_speed usbd_get_speed(struct usb_device *udev);
void device_set_usb_desc(device_t dev);
void usb_pause_mtx(struct mtx *mtx, int _ticks);
const struct usb_device_id *usbd_lookup_id_by_info(
const struct usb_device_id *id, usb_size_t sizeof_id,
const struct usbd_lookup_info *info);
int usbd_lookup_id_by_uaa(const struct usb_device_id *id,
usb_size_t sizeof_id, struct usb_attach_arg *uaa);
usb_error_t usbd_do_request_flags(struct usb_device *udev, struct mtx *mtx,
struct usb_device_request *req, void *data, uint16_t flags,
uint16_t *actlen, usb_timeout_t timeout);
#define usbd_do_request(u,m,r,d) \
usbd_do_request_flags(u,m,r,d,0,NULL,USB_DEFAULT_TIMEOUT)
uint8_t usbd_clear_stall_callback(struct usb_xfer *xfer1,
struct usb_xfer *xfer2);
uint8_t usbd_get_interface_altindex(struct usb_interface *iface);
usb_error_t usbd_set_alt_interface_index(struct usb_device *udev,
uint8_t iface_index, uint8_t alt_index);
uint32_t usbd_get_isoc_fps(struct usb_device *udev);
usb_error_t usbd_transfer_setup(struct usb_device *udev,
const uint8_t *ifaces, struct usb_xfer **pxfer,
const struct usb_config *setup_start, uint16_t n_setup,
void *priv_sc, struct mtx *priv_mtx);
void usbd_transfer_submit(struct usb_xfer *xfer);
void usbd_transfer_clear_stall(struct usb_xfer *xfer);
void usbd_transfer_drain(struct usb_xfer *xfer);
uint8_t usbd_transfer_pending(struct usb_xfer *xfer);
void usbd_transfer_start(struct usb_xfer *xfer);
void usbd_transfer_stop(struct usb_xfer *xfer);
void usbd_transfer_unsetup(struct usb_xfer **pxfer, uint16_t n_setup);
void usbd_transfer_poll(struct usb_xfer **ppxfer, uint16_t max);
void usbd_set_parent_iface(struct usb_device *udev, uint8_t iface_index,
uint8_t parent_index);
uint8_t usbd_get_bus_index(struct usb_device *udev);
uint8_t usbd_get_device_index(struct usb_device *udev);
void usbd_set_power_mode(struct usb_device *udev, uint8_t power_mode);
uint8_t usbd_device_attached(struct usb_device *udev);
void usbd_xfer_status(struct usb_xfer *xfer, int *actlen, int *sumlen,
int *aframes, int *nframes);
struct usb_page_cache *usbd_xfer_get_frame(struct usb_xfer *xfer,
usb_frcount_t frindex);
void *usbd_xfer_softc(struct usb_xfer *xfer);
void *usbd_xfer_get_priv(struct usb_xfer *xfer);
void usbd_xfer_set_priv(struct usb_xfer *xfer, void *);
void usbd_xfer_set_interval(struct usb_xfer *xfer, int);
uint8_t usbd_xfer_state(struct usb_xfer *xfer);
void usbd_xfer_set_frame_data(struct usb_xfer *xfer, usb_frcount_t frindex,
void *ptr, usb_frlength_t len);
void usbd_xfer_frame_data(struct usb_xfer *xfer, usb_frcount_t frindex,
void **ptr, int *len);
void usbd_xfer_set_frame_offset(struct usb_xfer *xfer, usb_frlength_t offset,
usb_frcount_t frindex);
usb_frlength_t usbd_xfer_max_len(struct usb_xfer *xfer);
usb_frlength_t usbd_xfer_max_framelen(struct usb_xfer *xfer);
usb_frcount_t usbd_xfer_max_frames(struct usb_xfer *xfer);
usb_frlength_t usbd_xfer_frame_len(struct usb_xfer *xfer,
usb_frcount_t frindex);
void usbd_xfer_set_frame_len(struct usb_xfer *xfer, usb_frcount_t frindex,
usb_frlength_t len);
void usbd_xfer_set_timeout(struct usb_xfer *xfer, int timeout);
void usbd_xfer_set_frames(struct usb_xfer *xfer, usb_frcount_t n);
void usbd_xfer_set_stall(struct usb_xfer *xfer);
int usbd_xfer_is_stalled(struct usb_xfer *xfer);
void usbd_xfer_set_flag(struct usb_xfer *xfer, int flag);
void usbd_xfer_clr_flag(struct usb_xfer *xfer, int flag);
uint16_t usbd_xfer_get_timestamp(struct usb_xfer *xfer);
void usbd_copy_in(struct usb_page_cache *cache, usb_frlength_t offset,
const void *ptr, usb_frlength_t len);
int usbd_copy_in_user(struct usb_page_cache *cache, usb_frlength_t offset,
const void *ptr, usb_frlength_t len);
void usbd_copy_out(struct usb_page_cache *cache, usb_frlength_t offset,
void *ptr, usb_frlength_t len);
int usbd_copy_out_user(struct usb_page_cache *cache, usb_frlength_t offset,
void *ptr, usb_frlength_t len);
void usbd_get_page(struct usb_page_cache *pc, usb_frlength_t offset,
struct usb_page_search *res);
void usbd_m_copy_in(struct usb_page_cache *cache, usb_frlength_t dst_offset,
struct mbuf *m, usb_size_t src_offset, usb_frlength_t src_len);
void usbd_frame_zero(struct usb_page_cache *cache, usb_frlength_t offset,
usb_frlength_t len);
int usb_fifo_attach(struct usb_device *udev, void *priv_sc,
struct mtx *priv_mtx, struct usb_fifo_methods *pm,
struct usb_fifo_sc *f_sc, uint16_t unit, uint16_t subunit,
uint8_t iface_index, uid_t uid, gid_t gid, int mode);
void usb_fifo_detach(struct usb_fifo_sc *f_sc);
int usb_fifo_alloc_buffer(struct usb_fifo *f, uint32_t bufsize,
uint16_t nbuf);
void usb_fifo_free_buffer(struct usb_fifo *f);
uint32_t usb_fifo_put_bytes_max(struct usb_fifo *fifo);
void usb_fifo_put_data(struct usb_fifo *fifo, struct usb_page_cache *pc,
usb_frlength_t offset, usb_frlength_t len, uint8_t what);
void usb_fifo_put_data_linear(struct usb_fifo *fifo, void *ptr,
usb_size_t len, uint8_t what);
uint8_t usb_fifo_put_data_buffer(struct usb_fifo *f, void *ptr, usb_size_t len);
void usb_fifo_put_data_error(struct usb_fifo *fifo);
uint8_t usb_fifo_get_data(struct usb_fifo *fifo, struct usb_page_cache *pc,
usb_frlength_t offset, usb_frlength_t len, usb_frlength_t *actlen,
uint8_t what);
uint8_t usb_fifo_get_data_linear(struct usb_fifo *fifo, void *ptr,
usb_size_t len, usb_size_t *actlen, uint8_t what);
uint8_t usb_fifo_get_data_buffer(struct usb_fifo *f, void **pptr,
usb_size_t *plen);
void usb_fifo_reset(struct usb_fifo *f);
void usb_fifo_wakeup(struct usb_fifo *f);
void usb_fifo_get_data_error(struct usb_fifo *fifo);
void *usb_fifo_softc(struct usb_fifo *fifo);
void usb_fifo_set_close_zlp(struct usb_fifo *, uint8_t);
void usb_fifo_set_write_defrag(struct usb_fifo *, uint8_t);
void usb_fifo_free(struct usb_fifo *f);
#endif /* _KERNEL */
#endif /* _USB_USBDI_H_ */
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