sys/dev/video/bktr/bktr_mem.h

   1 /* $FreeBSD: src/sys/dev/bktr/bktr_mem.h,v 1.2 2005/01/06 01:42:31 imp Exp $ */
   2 /* $DragonFly: src/sys/dev/video/bktr/bktr_mem.h,v 1.4 2007/10/03 19:27:08 swildner Exp $ */
   3
   4 /*
   5  * This is part of the Driver for Video Capture Cards (Frame grabbers)
   6  * and TV Tuner cards using the Brooktree Bt848, Bt848A, Bt849A, Bt878, Bt879
   7  * chipset.
   8  * Copyright Roger Hardiman.
   9  *
  10  * bktr_mem : This kernel module allows us to keep our allocated
  11  *            contiguous memory for the video buffer, DMA programs and VBI data
  12  *            while the main bktr driver is unloaded and reloaded.
  13  *            This avoids the problem of trying to allocate contiguous each
  14  *            time the bktr driver is loaded.
  15  */
  16
  17 /*-
  18  * 1. Redistributions of source code must retain the
  19  * Copyright (c) 2000 Roger Hardiman
  20  * All rights reserved.
  21  *
  22  * Redistribution and use in source and binary forms, with or without
  23  * modification, are permitted provided that the following conditions
  24  * are met:
  25  * 1. Redistributions of source code must retain the above copyright
  26  *    notice, this list of conditions and the following disclaimer.
  27  * 2. Redistributions in binary form must reproduce the above copyright
  28  *    notice, this list of conditions and the following disclaimer in the
  29  *    documentation and/or other materials provided with the distribution.
  30  * 3. All advertising materials mentioning features or use of this software
  31  *    must display the following acknowledgement:
  32  *      This product includes software developed by Roger Hardiman
  33  * 4. The name of the author may not be used to endorse or promote products
  34  *    derived from this software without specific prior written permission.
  35  *
  36  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  37  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  38  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  39  * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
  40  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  41  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  42  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  43  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  44  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  45  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  46  * POSSIBILITY OF SUCH DAMAGE.
  47  */
  48
  49
  50 /* Support this number of devices */
  51 #define BKTR_MEM_MAX_DEVICES    8
  52
  53 /* Define a name for each block of memory we need to keep hold of */
  54 #define BKTR_MEM_DMA_PROG       1
  55 #define BKTR_MEM_ODD_DMA_PROG   2
  56 #define BKTR_MEM_VBIDATA        3
  57 #define BKTR_MEM_VBIBUFFER      4
  58 #define BKTR_MEM_BUF            5
  59
  60 /* Prototypes */
  61 int         bktr_has_stored_addresses(int unit);
  62 void        bktr_store_address(int unit, int type, vm_offset_t addr);
  63 vm_offset_t bktr_retrieve_address(int unit, int type);