1/* $FreeBSD$ */ 2/*- 3 * Copyright (c) 2008 Hans Petter Selasky. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#ifndef _USB_PROCESS_H_ 28#define _USB_PROCESS_H_ 29 30#include <sys/interrupt.h> 31#include <sys/priority.h> 32#include <sys/runq.h> 33 34/* defines */ 35#define USB_PRI_HIGH PI_SWI(SWI_NET) 36#define USB_PRI_MED PI_SWI(SWI_CAMBIO) 37 38#define USB_PROC_WAIT_TIMEOUT 2 39#define USB_PROC_WAIT_DRAIN 1 40#define USB_PROC_WAIT_NORMAL 0 41 42/* structure prototypes */ 43 44struct usb_proc_msg; 45struct usb_device; 46 47/* 48 * The following structure defines the USB process. 49 */ 50struct usb_process { 51 TAILQ_HEAD(, usb_proc_msg) up_qhead; 52 struct cv up_cv; 53 struct cv up_drain; 54 55#if (__FreeBSD_version >= 800000) 56 struct thread *up_ptr; 57#else 58 struct proc *up_ptr; 59#endif 60 struct thread *up_curtd; 61 struct mtx *up_mtx; 62 63 usb_size_t up_msg_num; 64 65 uint8_t up_prio; 66 uint8_t up_gone; 67 uint8_t up_msleep; 68 uint8_t up_csleep; 69 uint8_t up_dsleep; 70}; 71 72/* prototypes */ 73 74uint8_t usb_proc_is_gone(struct usb_process *up); 75int usb_proc_create(struct usb_process *up, struct mtx *p_mtx, 76 const char *pmesg, uint8_t prio); 77void usb_proc_drain(struct usb_process *up); 78void usb_proc_mwait(struct usb_process *up, void *pm0, void *pm1); 79void usb_proc_free(struct usb_process *up); 80void *usb_proc_msignal(struct usb_process *up, void *pm0, void *pm1); 81void usb_proc_rewakeup(struct usb_process *up); 82int usb_proc_is_called_from(struct usb_process *up); 83 84void usb_proc_explore_mwait(struct usb_device *, void *, void *); 85void *usb_proc_explore_msignal(struct usb_device *, void *, void *); 86void usb_proc_explore_lock(struct usb_device *); 87void usb_proc_explore_unlock(struct usb_device *); 88 89#endif /* _USB_PROCESS_H_ */ 90