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90 lines
2.9 KiB
C
90 lines
2.9 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2008 Hans Petter Selasky. All rights reserved.
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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_PROCESS_H_
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#define _USB_PROCESS_H_
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#ifndef USB_GLOBAL_INCLUDE_FILE
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#include <sys/interrupt.h>
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#include <sys/priority.h>
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#include <sys/runq.h>
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#endif
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/* defines */
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#define USB_PRI_HIGHEST PI_SWI(SWI_TTY)
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#define USB_PRI_HIGH PI_SWI(SWI_NET)
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#define USB_PRI_MED PI_SWI(SWI_CAMBIO)
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#define USB_PROC_WAIT_TIMEOUT 2
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#define USB_PROC_WAIT_DRAIN 1
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#define USB_PROC_WAIT_NORMAL 0
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/* structure prototypes */
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struct usb_proc_msg;
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struct usb_device;
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/*
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* The following structure defines the USB process.
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*/
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struct usb_process {
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TAILQ_HEAD(, usb_proc_msg) up_qhead;
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struct cv up_cv;
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struct cv up_drain;
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struct thread *up_ptr;
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struct thread *up_curtd;
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struct mtx *up_mtx;
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usb_size_t up_msg_num;
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uint8_t up_prio;
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uint8_t up_gone;
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uint8_t up_msleep;
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uint8_t up_csleep;
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uint8_t up_dsleep;
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};
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/* prototypes */
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uint8_t usb_proc_is_gone(struct usb_process *up);
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int usb_proc_create(struct usb_process *up, struct mtx *p_mtx,
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const char *pmesg, uint8_t prio);
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void usb_proc_drain(struct usb_process *up);
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void usb_proc_mwait(struct usb_process *up, void *pm0, void *pm1);
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void usb_proc_free(struct usb_process *up);
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void *usb_proc_msignal(struct usb_process *up, void *pm0, void *pm1);
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void usb_proc_rewakeup(struct usb_process *up);
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int usb_proc_is_called_from(struct usb_process *up);
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void usb_proc_explore_mwait(struct usb_device *, void *, void *);
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void *usb_proc_explore_msignal(struct usb_device *, void *, void *);
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void usb_proc_explore_lock(struct usb_device *);
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void usb_proc_explore_unlock(struct usb_device *);
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#endif /* _USB_PROCESS_H_ */
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