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/priority.h> 31 32 /* defines */ 33 #define USB_PRI_HIGH PI_NET 34 #define USB_PRI_MED PI_DISK 35 36 #define USB_PROC_WAIT_TIMEOUT 2 37 #define USB_PROC_WAIT_DRAIN 1 38 #define USB_PROC_WAIT_NORMAL 0 39 40 /* structure prototypes */ 41 42 struct usb_proc_msg; 43 44 /* 45 * The following structure defines the USB process. 46 */ 47 struct usb_process { 48 TAILQ_HEAD(, usb_proc_msg) up_qhead; 49 struct cv up_cv; 50 struct cv up_drain; 51 52 #if (__FreeBSD_version >= 800000) 53 struct thread *up_ptr; 54 #else 55 struct proc *up_ptr; 56 #endif 57 struct thread *up_curtd; 58 struct mtx *up_mtx; 59 60 usb_size_t up_msg_num; 61 62 uint8_t up_prio; 63 uint8_t up_gone; 64 uint8_t up_msleep; 65 uint8_t up_csleep; 66 uint8_t up_dsleep; 67 }; 68 69 /* prototypes */ 70 71 uint8_t usb_proc_is_gone(struct usb_process *up); 72 int usb_proc_create(struct usb_process *up, struct mtx *p_mtx, 73 const char *pmesg, uint8_t prio); 74 void usb_proc_drain(struct usb_process *up); 75 void usb_proc_mwait(struct usb_process *up, void *pm0, void *pm1); 76 void usb_proc_free(struct usb_process *up); 77 void *usb_proc_msignal(struct usb_process *up, void *pm0, void *pm1); 78 void usb_proc_rewakeup(struct usb_process *up); 79 80 #endif /* _USB_PROCESS_H_ */ 81