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
7 * Copyright Roger Hardiman.
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.
17 * SPDX-License-Identifier: BSD-4-Clause
19 * 1. Redistributions of source code must retain the
20 * Copyright (c) 2000 Roger Hardiman
21 * All rights reserved.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the above copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * This product includes software developed by Roger Hardiman
34 * 4. The name of the author may not be used to endorse or promote products
35 * derived from this software without specific prior written permission.
37 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
38 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
39 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
40 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
41 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
42 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
43 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
44 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
45 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
46 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
47 * POSSIBILITY OF SUCH DAMAGE.
51 /* Support this number of devices */
52 #define BKTR_MEM_MAX_DEVICES 8
54 /* Define a name for each block of memory we need to keep hold of */
55 #define BKTR_MEM_DMA_PROG 1
56 #define BKTR_MEM_ODD_DMA_PROG 2
57 #define BKTR_MEM_VBIDATA 3
58 #define BKTR_MEM_VBIBUFFER 4
59 #define BKTR_MEM_BUF 5
62 int bktr_has_stored_addresses(int unit);
63 void bktr_store_address(int unit, int type, vm_offset_t addr);
64 vm_offset_t bktr_retrieve_address(int unit, int type);