bktr_os.h revision 330897 
1/* $FreeBSD: stable/11/sys/dev/bktr/bktr_os.h 330897 2018-03-14 03:19:51Z eadler $ */
2
3/*
4 * This is part of the Driver for Video Capture Cards (Frame grabbers)
5 * and TV Tuner cards using the Brooktree Bt848, Bt848A, Bt849A, Bt878, Bt879
6 * chipset.
7 * Copyright Roger Hardiman and Amancio Hasty.
8 *
9 * bktr_os : This has all the Operating System dependent code.
10 *
11 */
12
13/*-
14 * SPDX-License-Identifier: BSD-4-Clause
15 *
16 * 1. Redistributions of source code must retain the
17 * Copyright (c) 1997 Amancio Hasty, 1999 Roger Hardiman
18 * All rights reserved.
19 *
20 * Redistribution and use in source and binary forms, with or without
21 * modification, are permitted provided that the following conditions
22 * are met:
23 * 1. Redistributions of source code must retain the above copyright
24 *    notice, this list of conditions and the following disclaimer.
25 * 2. Redistributions in binary form must reproduce the above copyright
26 *    notice, this list of conditions and the following disclaimer in the
27 *    documentation and/or other materials provided with the distribution.
28 * 3. All advertising materials mentioning features or use of this software
29 *    must display the following acknowledgement:
30 *	This product includes software developed by Amancio Hasty and
31 *      Roger Hardiman
32 * 4. The name of the author may not be used to endorse or promote products
33 *    derived from this software without specific prior written permission.
34 *
35 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
36 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
37 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
38 * DISCLAIMED.	IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
39 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
40 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
41 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
42 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
43 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
44 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
45 * POSSIBILITY OF SUCH DAMAGE.
46 */
47
48
49/******************************/
50/* *** Memory Allocation  *** */
51/******************************/
52#if (defined(__FreeBSD__) || defined(__bsdi__))
53vm_offset_t     get_bktr_mem( int unit, unsigned size );
54#endif
55
56#if (defined(__NetBSD__) || defined(__OpenBSD__))
57vm_offset_t     get_bktr_mem(bktr_ptr_t, bus_dmamap_t *, unsigned size);
58void            free_bktr_mem(bktr_ptr_t, bus_dmamap_t, vm_offset_t);
59#endif
60
61/************************************/
62/* *** Interrupt Enable/Disable *** */
63/************************************/
64#if defined(__FreeBSD__)
65#if (__FreeBSD_version >=500000)
66#define USE_VBIMUTEX
67#define	DECLARE_INTR_MASK(s)	/* no need to declare 's' */
68#define DISABLE_INTR(s)
69#define ENABLE_INTR(s)
70#else
71#define DECLARE_INTR_MASK(s)	intrmask_t s
72#define DISABLE_INTR(s)		s=spltty()
73#define ENABLE_INTR(s)		splx(s)
74#endif
75#else
76#define DECLARE_INTR_MASK(s)	/* no need to declare 's' */
77#define DISABLE_INTR(s)		disable_intr()
78#define ENABLE_INTR(s)		enable_intr()
79#endif
80
81#ifdef USE_VBIMUTEX
82#define LOCK_VBI(bktr)		mtx_lock(&bktr->vbimutex)
83#define UNLOCK_VBI(bktr)	mtx_unlock(&bktr->vbimutex)
84#else
85#define LOCK_VBI(bktr)
86#define UNLOCK_VBI(bktr)
87#endif
88