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dd11af6637
Main change is the addition of the bktr_mem module. This holds onto the bktr driver's contiguously allocated memory when the bktr driver is unloaded and reloaded. This has to be done because it is virtually impossible to get contiguous memory once a system is running. Also tidied up the use of SMBUS, added a new Hauppauge tuner type (0x2c) and a new Flyvideo vendor ID.
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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