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freebsd-dev/sys/i386/include/iodev.h

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Break out the MI part of the /dev/[k]mem and /dev/io drivers into their own directory and module, leaving the MD parts in the MD area (the MD parts _are_ part of the modules). /dev/mem and /dev/io are now loadable modules, thus taking us one step further towards a kernel created entirely out of modules. Of course, there is nothing preventing the kernel from having these statically compiled.
2004-08-01 11:40:54 +00:00
/*-
sys/i386: further adoption of SPDX licensing ID tags. Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
2017-11-27 15:08:52 +00:00
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
Break out the MI part of the /dev/[k]mem and /dev/io drivers into their own directory and module, leaving the MD parts in the MD area (the MD parts _are_ part of the modules). /dev/mem and /dev/io are now loadable modules, thus taking us one step further towards a kernel created entirely out of modules. Of course, there is nothing preventing the kernel from having these statically compiled.
2004-08-01 11:40:54 +00:00
* Copyright (c) 2004 Mark R V Murray
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer
* in this position and unchanged.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
- Extract the IODEV_PIO interface from ia64 and make it MI. In the end, it does help fixing /dev/io usage from multithreaded processes. - On i386 and amd64 the old behaviour is kept but multithreaded processes must use the new interface in order to work well. - Support for the other architectures is greatly improved, where necessary, by the necessity to define very small things now. Manpage update will happen shortly. Sponsored by: Sandvine Incorporated PR: threads/116181 Reviewed by: emaste, marcel MFC after: 3 weeks
2010-04-28 15:38:01 +00:00
#ifndef _MACHINE_IODEV_H_
#define _MACHINE_IODEV_H_
Break out the MI part of the /dev/[k]mem and /dev/io drivers into their own directory and module, leaving the MD parts in the MD area (the MD parts _are_ part of the modules). /dev/mem and /dev/io are now loadable modules, thus taking us one step further towards a kernel created entirely out of modules. Of course, there is nothing preventing the kernel from having these statically compiled.
2004-08-01 11:40:54 +00:00
- Extract the IODEV_PIO interface from ia64 and make it MI. In the end, it does help fixing /dev/io usage from multithreaded processes. - On i386 and amd64 the old behaviour is kept but multithreaded processes must use the new interface in order to work well. - Support for the other architectures is greatly improved, where necessary, by the necessity to define very small things now. Manpage update will happen shortly. Sponsored by: Sandvine Incorporated PR: threads/116181 Reviewed by: emaste, marcel MFC after: 3 weeks
2010-04-28 15:38:01 +00:00
#ifdef _KERNEL
#include <machine/cpufunc.h>
#define iodev_read_1 inb
#define iodev_read_2 inw
#define iodev_read_4 inl
#define iodev_write_1 outb
#define iodev_write_2 outw
#define iodev_write_4 outl
int iodev_open(struct thread *td);
int iodev_close(struct thread *td);
int iodev_ioctl(u_long cmd, caddr_t data);
#endif /* _KERNEL */
#endif /* _MACHINE_IODEV_H_ */
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