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