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/* $FreeBSD: release/9.1.0/sys/dev/usb/usb_process.h 217350 2011-01-13 14:15:36Z jhb $ */
/*-
* Copyright (c) 2008 Hans Petter Selasky. All rights reserved.
*
* 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*/
#ifndef _USB_PROCESS_H_
#define _USB_PROCESS_H_
#include <sys/interrupt.h>
#include <sys/priority.h>
#include <sys/runq.h>
/* defines */
#define USB_PRI_HIGH PI_SWI(SWI_NET)
#define USB_PRI_MED PI_SWI(SWI_CAMBIO)
#define USB_PROC_WAIT_TIMEOUT 2
#define USB_PROC_WAIT_DRAIN 1
#define USB_PROC_WAIT_NORMAL 0
/* structure prototypes */
struct usb_proc_msg;
/*
* The following structure defines the USB process.
*/
struct usb_process {
TAILQ_HEAD(, usb_proc_msg) up_qhead;
struct cv up_cv;
struct cv up_drain;
#if (__FreeBSD_version >= 800000)
struct thread *up_ptr;
#else
struct proc *up_ptr;
#endif
struct thread *up_curtd;
struct mtx *up_mtx;
usb_size_t up_msg_num;
uint8_t up_prio;
uint8_t up_gone;
uint8_t up_msleep;
uint8_t up_csleep;
uint8_t up_dsleep;
};
/* prototypes */
uint8_t usb_proc_is_gone(struct usb_process *up);
int usb_proc_create(struct usb_process *up, struct mtx *p_mtx,
const char *pmesg, uint8_t prio);
void usb_proc_drain(struct usb_process *up);
void usb_proc_mwait(struct usb_process *up, void *pm0, void *pm1);
void usb_proc_free(struct usb_process *up);
void *usb_proc_msignal(struct usb_process *up, void *pm0, void *pm1);
void usb_proc_rewakeup(struct usb_process *up);
#endif /* _USB_PROCESS_H_ */