ed91131846
Now, it's safe to call the fwohci interrupt(polling) routine while ddb/gdb is active. After this change, a dcons connnection over FireWire can survive bus resets even in kernel debugger. This means that it is not too late to plug a FireWire cable after a panic to investigate the problem. Actually there is a small window(between a jump to kernel from loader and initialization of dcons_crom) in which no one can take care of a bus reset. Except that window, firewire console should keep working from loader to reboot even with a panic and a bus reset. (as far as you enable LOADER_FIREWIRE_SUPPORT)
49 lines
2.0 KiB
C
49 lines
2.0 KiB
C
/*-
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* Copyright (C) 2002-2004
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* Hidetoshi Shimokawa. 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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*
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* This product includes software developed by Hidetoshi Shimokawa.
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*
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* 4. Neither the name of the author nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR 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, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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typedef void (*dcons_poll_fn)(void *, int);
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EVENTHANDLER_DECLARE(dcons_poll, dcons_poll_fn);
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struct dcons_global {
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struct consdev *cdev;
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struct dcons_buf *buf;
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size_t size;
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bus_dma_tag_t dma_tag;
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bus_dmamap_t dma_map;
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};
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extern struct dcons_global *dcons_conf;
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