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In preparation for an arm64 port, make an easy change which puts some machine-dependent code in its own directory. Going forward, code which is only used on one platform should live in a MD directory. We should strive to layer modules in such a way as to avoid polluting shared code with lots of ifdefs. For some existing files this will take some effort. task_switch.c and fwctl.c are an easy place to start: the former is very x86-specific, and the latter provides an I/O port interface which can't be used on anything other than x86. (fwcfg as implemented has the same problem, but QEMU also supports a MMIO fwcfg interface.) So I propose that we start by simply making those files conditional. Reviewed by: corvink, jhb MFC after: 1 week Sponsored by: Innovate UK Differential Revision: https://reviews.freebsd.org/D40501
55 lines
1.8 KiB
C
55 lines
1.8 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2015 Peter Grehan <grehan@freebsd.org>
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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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#ifndef _FWCTL_H_
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#define _FWCTL_H_
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#include <sys/linker_set.h>
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/*
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* Linker set api for export of information to guest firmware via
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* a sysctl-like OID interface
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*/
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struct ctl {
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const char *c_oid;
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const void *c_data;
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const int c_len;
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};
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#define CTL_NODE(oid, data, len) \
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static struct ctl __CONCAT(__ctl, __LINE__) = { \
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oid, \
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(data), \
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(len), \
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}; \
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DATA_SET(ctl_set, __CONCAT(__ctl, __LINE__))
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void fwctl_init(void);
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#endif /* _FWCTL_H_ */
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