1/* $FreeBSD$ */
2
3/*
4 * This is prt 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.
8 *
9 * bktr_mem : This kernel module allows us to keep our allocated
10 *            contiguous memory for the video buffer, DMA programs and VBI data
11 *            while the main bktr driver is unloaded and reloaded.
12 *            This avoids the problem of trying to allocate contiguous each
13 *            time the bktr driver is loaded.
14 */
15
16/*-
17 * 1. Redistributions of source code must retain the
18 * Copyright (c) 2000 Roger Hardiman
19 * All rights reserved.
20 *
21 * Redistribution and use in source and binary forms, with or without
22 * modification, are permitted provided that the following conditions
23 * are met:
24 * 1. Redistributions of source code must retain the above copyright
25 *    notice, this list of conditions and the following disclaimer.
26 * 2. Redistributions in binary form must reproduce the above copyright
27 *    notice, this list of conditions and the following disclaimer in the
28 *    documentation and/or other materials provided with the distribution.
29 * 3. All advertising materials mentioning features or use of this software
30 *    must display the following acknowledgement:
31 *      This product includes software developed by 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/* Support this number of devices */
50#define BKTR_MEM_MAX_DEVICES	8
51
52/* Define a name for each block of memory we need to keep hold of */
53#define BKTR_MEM_DMA_PROG       1
54#define BKTR_MEM_ODD_DMA_PROG   2
55#define BKTR_MEM_VBIDATA        3
56#define BKTR_MEM_VBIBUFFER      4
57#define BKTR_MEM_BUF            5
58
59/* Prototypes */
60int         bktr_has_stored_addresses(int unit);
61void        bktr_store_address(int unit, int type, vm_offset_t addr);
62vm_offset_t bktr_retrieve_address(int unit, int type);
63
64