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 #ifndef USB_GLOBAL_INCLUDE_FILE 31 #include <sys/interrupt.h> 32 #include <sys/priority.h> 33 #include <sys/runq.h> 34 #endif 35 36 /* defines */ 37 #define USB_PRI_HIGHEST PI_SWI(SWI_TTY) 38 #define USB_PRI_HIGH PI_SWI(SWI_NET) 39 #define USB_PRI_MED PI_SWI(SWI_CAMBIO) 40 41 #define USB_PROC_WAIT_TIMEOUT 2 42 #define USB_PROC_WAIT_DRAIN 1 43 #define USB_PROC_WAIT_NORMAL 0 44 45 /* structure prototypes */ 46 47 struct usb_proc_msg; 48 struct usb_device; 49 50 /* 51 * The following structure defines the USB process. 52 */ 53 struct usb_process { 54 TAILQ_HEAD(, usb_proc_msg) up_qhead; 55 struct cv up_cv; 56 struct cv up_drain; 57 58 #if (__FreeBSD_version >= 800000) 59 struct thread *up_ptr; 60 #else 61 struct proc *up_ptr; 62 #endif 63 struct thread *up_curtd; 64 struct mtx *up_mtx; 65 66 usb_size_t up_msg_num; 67 68 uint8_t up_prio; 69 uint8_t up_gone; 70 uint8_t up_msleep; 71 uint8_t up_csleep; 72 uint8_t up_dsleep; 73 }; 74 75 /* prototypes */ 76 77 uint8_t usb_proc_is_gone(struct usb_process *up); 78 int usb_proc_create(struct usb_process *up, struct mtx *p_mtx, 79 const char *pmesg, uint8_t prio); 80 void usb_proc_drain(struct usb_process *up); 81 void usb_proc_mwait(struct usb_process *up, void *pm0, void *pm1); 82 void usb_proc_free(struct usb_process *up); 83 void *usb_proc_msignal(struct usb_process *up, void *pm0, void *pm1); 84 void usb_proc_rewakeup(struct usb_process *up); 85 int usb_proc_is_called_from(struct usb_process *up); 86 87 void usb_proc_explore_mwait(struct usb_device *, void *, void *); 88 void *usb_proc_explore_msignal(struct usb_device *, void *, void *); 89 void usb_proc_explore_lock(struct usb_device *); 90 void usb_proc_explore_unlock(struct usb_device *); 91 92 #endif /* _USB_PROCESS_H_ */ 93