64 lines
2.7 KiB
C
64 lines
2.7 KiB
C
/* $FreeBSD$ */
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/*
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* This is prt of the Driver for Video Capture Cards (Frame grabbers)
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* and TV Tuner cards using the Brooktree Bt848, Bt848A, Bt849A, Bt878, Bt879
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* chipset.
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* Copyright Roger Hardiman.
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*
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* bktr_mem : This kernel module allows us to keep our allocated
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* contiguous memory for the video buffer, DMA programs and VBI data
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* while the main bktr driver is unloaded and reloaded.
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* This avoids the problem of trying to allocate contiguous each
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* time the bktr driver is loaded.
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*/
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/*-
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* 1. Redistributions of source code must retain the
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* Copyright (c) 2000 Roger Hardiman
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Roger Hardiman
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/* Support this number of devices */
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#define BKTR_MEM_MAX_DEVICES 8
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/* Define a name for each block of memory we need to keep hold of */
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#define BKTR_MEM_DMA_PROG 1
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#define BKTR_MEM_ODD_DMA_PROG 2
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#define BKTR_MEM_VBIDATA 3
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#define BKTR_MEM_VBIBUFFER 4
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#define BKTR_MEM_BUF 5
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/* Prototypes */
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int bktr_has_stored_addresses(int unit);
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void bktr_store_address(int unit, int type, vm_offset_t addr);
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vm_offset_t bktr_retrieve_address(int unit, int type);
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