1 /* $FreeBSD: releng/8.3/sys/dev/usb/usb_process.h 218288 2011-02-04 17:26:44Z jhb $ */
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
44 struct usb_proc_msg;
45
46 /*
47 * The following structure defines the USB process.
48 */
49 struct usb_process {
50 TAILQ_HEAD(, usb_proc_msg) up_qhead;
51 struct cv up_cv;
52 struct cv up_drain;
53
54 #if (__FreeBSD_version >= 800000)
55 struct thread *up_ptr;
56 #else
57 struct proc *up_ptr;
58 #endif
59 struct thread *up_curtd;
60 struct mtx *up_mtx;
61
62 usb_size_t up_msg_num;
63
64 uint8_t up_prio;
65 uint8_t up_gone;
66 uint8_t up_msleep;
67 uint8_t up_csleep;
68 uint8_t up_dsleep;
69 };
70
71 /* prototypes */
72
73 uint8_t usb_proc_is_gone(struct usb_process *up);
74 int usb_proc_create(struct usb_process *up, struct mtx *p_mtx,
75 const char *pmesg, uint8_t prio);
76 void usb_proc_drain(struct usb_process *up);
77 void usb_proc_mwait(struct usb_process *up, void *pm0, void *pm1);
78 void usb_proc_free(struct usb_process *up);
79 void *usb_proc_msignal(struct usb_process *up, void *pm0, void *pm1);
80 void usb_proc_rewakeup(struct usb_process *up);
81
82 #endif /* _USB_PROCESS_H_ */
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