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 _USB2_PROCESS_H_ 28 #define _USB2_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 usb2_proc_msg; 43 44 /* typedefs */ 45 46 typedef void (usb2_proc_callback_t)(struct usb2_proc_msg *hdr); 47 48 /* 49 * The following structure defines the USB process message header. 50 */ 51 struct usb2_proc_msg { 52 TAILQ_ENTRY(usb2_proc_msg) pm_qentry; 53 usb2_proc_callback_t *pm_callback; 54 uint32_t pm_num; 55 }; 56 57 /* 58 * The following structure defines the USB process. 59 */ 60 struct usb2_process { 61 TAILQ_HEAD(, usb2_proc_msg) up_qhead; 62 struct cv up_cv; 63 struct cv up_drain; 64 65 struct proc *up_ptr; 66 struct thread *up_curtd; 67 struct mtx *up_mtx; 68 69 uint32_t up_msg_num; 70 71 uint8_t up_prio; 72 uint8_t up_gone; 73 uint8_t up_msleep; 74 uint8_t up_csleep; 75 uint8_t up_dsleep; 76 }; 77 78 /* prototypes */ 79 80 uint8_t usb2_proc_is_gone(struct usb2_process *up); 81 int usb2_proc_create(struct usb2_process *up, struct mtx *p_mtx, 82 const char *pmesg, uint8_t prio); 83 void usb2_proc_drain(struct usb2_process *up); 84 void usb2_proc_mwait(struct usb2_process *up, void *pm0, void *pm1); 85 void usb2_proc_free(struct usb2_process *up); 86 void *usb2_proc_msignal(struct usb2_process *up, void *pm0, void *pm1); 87 88 #endif /* _USB2_PROCESS_H_ */ 89