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61cd6946d0
- UOS will boot fail if 'strictio' is enabled ('-e' option), in this
case (with '-e'), device model will block all PIO accesses whose
handlers were not registered, after that, device model program will
exit, hence UOS boot fail.
actually, such kind of accesses exist, e.g. UOS would program
PIT registers (port address: 0x43) if hpet is disabled.
- For debug, we can trap unexpected PIO access in 'default_inout()'
Signed-off-by: Yonghua Huang <yonghua.huang@intel.com>
82 lines
2.6 KiB
C
82 lines
2.6 KiB
C
/*-
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* Copyright (c) 2011 NetApp, Inc.
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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 NETAPP, INC ``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 NETAPP, INC 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 _INOUT_H_
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#define _INOUT_H_
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#include "types.h"
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#include "acrn_common.h"
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struct vmctx;
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struct vhm_request;
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/*
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* inout emulation handlers return 0 on success and -1 on failure.
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*/
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typedef int (*inout_func_t)(struct vmctx *ctx, int vcpu, int in, int port,
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int bytes, uint32_t *eax, void *arg);
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struct inout_port {
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const char *name;
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int port;
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int size;
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int flags;
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inout_func_t handler;
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void *arg;
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};
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#define IOPORT_F_IN 0x1
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#define IOPORT_F_OUT 0x2
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#define IOPORT_F_INOUT (IOPORT_F_IN | IOPORT_F_OUT)
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/*
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* The following flags are used internally and must not be used by
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* device models.
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*/
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#define IOPORT_F_DEFAULT 0x80000000 /* claimed by default handler */
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#define INOUT_PORT(name, port, flags, handler) \
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static struct inout_port __CONCAT(__inout_port, __LINE__) = \
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{ \
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#name, \
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(port), \
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1, \
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(flags), \
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(handler), \
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0 \
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}; \
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DATA_SET(inout_port_set, __CONCAT(__inout_port, __LINE__))
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void init_inout(void);
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int emulate_inout(struct vmctx *ctx, int *pvcpu, struct pio_request *req);
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int register_inout(struct inout_port *iop);
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int unregister_inout(struct inout_port *iop);
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int init_bvmcons(void);
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void deinit_bvmcons(void);
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void enable_bvmcons(void);
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#endif /* _INOUT_H_ */
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