d17b5104a9
the UART FIFO. The emulation is constrained in a number of ways: 64-bit only, doesn't check for all exception conditions, limited to i/o ports emulated in userspace. Some of these constraints will be relaxed in followup commits. Requested by: grehan Reviewed by: tychon (partially and a much earlier version)
38 lines
1.6 KiB
C
38 lines
1.6 KiB
C
/*-
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* Copyright (c) 2014 Tycho Nightingale <tycho.nightingale@pluribusnetworks.com>
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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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#ifndef _VMM_IOPORT_H_
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#define _VMM_IOPORT_H_
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typedef int (*ioport_handler_func_t)(void *vm, int vcpuid,
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bool in, int port, int bytes, uint32_t *val);
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int vm_handle_inout(struct vm *vm, int vcpuid, struct vm_exit *vme, bool *retu);
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#endif /* _VMM_IOPORT_H_ */
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