162 lines
5.2 KiB
C
162 lines
5.2 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2008-2023 Hans Petter Selasky
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _USB_DEV_H_
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#define _USB_DEV_H_
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#ifndef USB_GLOBAL_INCLUDE_FILE
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#include <sys/file.h>
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#include <sys/selinfo.h>
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#include <sys/poll.h>
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#include <sys/signalvar.h>
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#include <sys/proc.h>
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#endif
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struct usb_fifo;
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struct usb_mbuf;
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struct usb_symlink {
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TAILQ_ENTRY(usb_symlink) sym_entry;
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char src_path[32]; /* Source path - including terminating
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* zero */
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char dst_path[32]; /* Destination path - including
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* terminating zero */
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uint8_t src_len; /* String length */
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uint8_t dst_len; /* String length */
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};
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/*
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* Private per-device information.
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*/
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struct usb_cdev_privdata {
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struct usb_bus *bus;
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struct usb_device *udev;
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struct usb_interface *iface;
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int bus_index; /* bus index */
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int dev_index; /* device index */
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int ep_addr; /* endpoint address */
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int fflags;
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uint8_t fifo_index; /* FIFO index */
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};
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/*
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* The following structure defines a minimum re-implementation of the
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* ifqueue structure in the kernel.
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*/
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struct usb_ifqueue {
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struct usb_mbuf *ifq_head;
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struct usb_mbuf *ifq_tail;
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usb_size_t ifq_len;
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usb_size_t ifq_maxlen;
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};
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/*
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* Private per-device and per-thread reference information
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*/
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struct usb_cdev_refdata {
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struct usb_fifo *rxfifo;
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struct usb_fifo *txfifo;
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uint8_t is_read; /* location has read access */
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uint8_t is_write; /* location has write access */
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uint8_t is_uref; /* USB refcount decr. needed */
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uint8_t is_usbfs; /* USB-FS is active */
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uint8_t do_unlock; /* USB enum unlock needed */
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};
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struct usb_fs_privdata {
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int bus_index;
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int dev_index;
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int ep_addr;
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int mode;
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int fifo_index;
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struct cdev *cdev;
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LIST_ENTRY(usb_fs_privdata) pd_next;
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};
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/*
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* Most of the fields in the "usb_fifo" structure are used by the
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* generic USB access layer.
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*/
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struct usb_fifo {
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struct usb_ifqueue free_q;
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struct usb_ifqueue used_q;
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struct selinfo selinfo;
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struct cv cv_io;
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struct cv cv_drain;
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struct sx fs_fastpath_lock;
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struct usb_fifo_methods *methods;
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struct usb_symlink *symlink[2];/* our symlinks */
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struct proc *async_p; /* process that wants SIGIO */
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struct usb_fs_endpoint *fs_ep_ptr;
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struct usb_device *udev;
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#define USB_FS_XFER_MAX 126
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struct usb_xfer *xfer[2];
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struct usb_xfer *fs_xfer[USB_FS_XFER_MAX];
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struct mtx *priv_mtx; /* client data */
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/* set if FIFO is opened by a FILE: */
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struct usb_cdev_privdata *curr_cpd;
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void *priv_sc0; /* client data */
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void *priv_sc1; /* client data */
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void *queue_data;
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usb_size_t fs_ep_sz;
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usb_timeout_t timeout; /* timeout in milliseconds */
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usb_frlength_t bufsize; /* BULK and INTERRUPT buffer size */
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usb_frcount_t nframes; /* for isochronous mode */
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uint16_t dev_ep_index; /* our device endpoint index */
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uint8_t flag_sleeping; /* set if FIFO is sleeping */
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uint8_t flag_iscomplete; /* set if a USB transfer is complete */
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uint8_t flag_iserror; /* set if FIFO error happened */
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uint8_t flag_isselect; /* set if FIFO is selected */
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uint8_t flag_flushing; /* set if FIFO is flushing data */
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uint8_t flag_short; /* set if short_ok or force_short
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* transfer flags should be set */
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uint8_t flag_stall; /* set if clear stall should be run */
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uint8_t flag_write_defrag; /* set to defrag written data */
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uint8_t flag_have_fragment; /* set if defragging */
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uint8_t iface_index; /* set to the interface we belong to */
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uint8_t fifo_index; /* set to the FIFO index in "struct
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* usb_device" */
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uint8_t fs_ep_max;
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uint8_t fifo_zlp; /* zero length packet count */
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uint8_t refcount;
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#define USB_FIFO_REF_MAX 0xFF
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};
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extern struct cdevsw usb_devsw;
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int usb_fifo_wait(struct usb_fifo *fifo);
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void usb_fifo_signal(struct usb_fifo *fifo);
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uint8_t usb_fifo_opened(struct usb_fifo *fifo);
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struct usb_symlink *usb_alloc_symlink(const char *target);
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void usb_free_symlink(struct usb_symlink *ps);
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int usb_read_symlink(uint8_t *user_ptr, uint32_t startentry,
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uint32_t user_len);
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#endif /* _USB_DEV_H_ */
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