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freebsd-skq/sys/dev/usb/usbdi.h
Hans Petter Selasky 43ea03d756 Improve the realtime properties of USB transfers for embedded systems 
like RPI-B and RPI-2.

Description of problem:
USB transfers can process data in their callbacks sometimes causing
unacceptable latency for other USB transfers. Separate BULK completion
callbacks from CONTROL, INTERRUPT and ISOCHRONOUS callbacks, and give
BULK completion callbacks lesser execution priority than the
others. This way USB audio won't be interfered by heavy USB ethernet
usage for example.

Further serve USB transfer completion in a round robin fashion,
instead of only serving the most CPU hungry. This has been done by
adding a third flag to USB transfer queue structure which keeps track
of looping callbacks. The "command" callback function then decides
what to do when looping.

MFC after:		2 weeks
2015-08-14 12:57:53 +00:00

625 lines
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/*-
* 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_attach_arg;
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 usb_fs_privdata;
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);
/* USB events */
#ifndef USB_GLOBAL_INCLUDE_FILE
#include <sys/eventhandler.h>
#endif
typedef void (*usb_dev_configured_t)(void *, struct usb_device *,
struct usb_attach_arg *);
EVENTHANDLER_DECLARE(usb_dev_configured, usb_dev_configured_t);
/*
* 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;
uint8_t recurse_3:1;
uint8_t reserved:5;
};
/*
* The following structure defines an USB endpoint
* USB endpoint.
*/
struct usb_endpoint {
/* queue of USB transfers */
struct usb_xfer_queue endpoint_q[USB_MAX_EP_STREAMS];
struct usb_endpoint_descriptor *edesc;
struct usb_endpoint_ss_comp_descriptor *ecomp;
const struct usb_pipe_methods *methods; /* set by HC driver */
uint16_t isoc_next;
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" */
uint8_t refcount_alloc; /* allocation refcount */
uint8_t refcount_bw; /* bandwidth refcount */
#define USB_EP_REF_MAX 0x3f
/* High-Speed resource allocation (valid if "refcount_bw" > 0) */
uint8_t usb_smask; /* USB start mask */
uint8_t usb_cmask; /* USB complete mask */
uint8_t usb_uframe; /* USB microframe */
/* USB endpoint mode, see USB_EP_MODE_XXX */
uint8_t ep_mode;
};
/*
* 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 */
char *pnpinfo; /* additional PnP-info for this interface */
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! */
uint8_t pre_scale_frames:1; /* "usb_config->frames" is
* assumed to give the
* buffering time in
* milliseconds and is
* converted into the nearest
* number of frames when the
* USB transfer is setup. This
* option only has effect for
* ISOCHRONOUS transfers.
*/
};
/*
* 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 */
usb_stream_t stream_id; /* USB3.0 specific */
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 */
};
/*
* Use these macro when defining USB device ID arrays if you want to
* have your driver module automatically loaded in host, device or
* both modes respectivly:
*/
#if USB_HAVE_ID_SECTION
#define STRUCT_USB_HOST_ID \
struct usb_device_id __section("usb_host_id")
#define STRUCT_USB_DEVICE_ID \
struct usb_device_id __section("usb_device_id")
#define STRUCT_USB_DUAL_ID \
struct usb_device_id __section("usb_dual_id")
#else
#define STRUCT_USB_HOST_ID \
struct usb_device_id
#define STRUCT_USB_DEVICE_ID \
struct usb_device_id
#define STRUCT_USB_DUAL_ID \
struct usb_device_id
#endif /* USB_HAVE_ID_SECTION */
/*
* 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;
uint8_t match_flag_unused:6;
#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
} __aligned(32);
/* check that the size of the structure above is correct */
extern char usb_device_id_assert[(sizeof(struct usb_device_id) == 32) ? 1 : -1];
#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 dev_state;
#define UAA_DEV_READY 0
#define UAA_DEV_DISABLED 1
#define UAA_DEV_EJECTING 2
};
/*
* 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 usb_fs_privdata *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);
usb_error_t usbd_set_pnpinfo(struct usb_device *udev,
uint8_t iface_index, const char *pnpinfo);
usb_error_t usbd_add_dynamic_quirk(struct usb_device *udev,
uint16_t quirk);
usb_error_t usbd_set_endpoint_mode(struct usb_device *udev,
struct usb_endpoint *ep, uint8_t ep_mode);
uint8_t usbd_get_endpoint_mode(struct usb_device *udev,
struct usb_endpoint *ep);
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_filter_power_mode(struct usb_device *udev, uint8_t power_mode);
uint8_t usbd_device_attached(struct usb_device *udev);
usb_frlength_t
usbd_xfer_old_frame_length(struct usb_xfer *xfer, usb_frcount_t frindex);
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 *, usb_frcount_t);
void *usbd_xfer_get_frame_buffer(struct usb_xfer *, usb_frcount_t);
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);
uint8_t usbd_xfer_get_fps_shift(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);
uint8_t usbd_xfer_maxp_was_clamped(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);
void usbd_start_re_enumerate(struct usb_device *udev);
usb_error_t
usbd_start_set_config(struct usb_device *, uint8_t);
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, int16_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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