Date: Mon, 11 Jan 2010 18:10:13 +0000 (UTC) From: Marcel Moolenaar <marcel@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/amd64/amd64 io.c src/sys/amd64/include iodev.h src/sys/conf files.ia64 src/sys/dev/io iodev.c src/sys/i386/i386 io.c src/sys/i386/include iodev.h src/sys/ia64/conf DEFAULTS src/sys/ia64/ia64 iodev_machdep.c sys_machdep.c ... Message-ID: <201001111810.o0BIAai7004248@repoman.freebsd.org>
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marcel 2010-01-11 18:10:13 UTC
FreeBSD src repository
Modified files:
sys/amd64/amd64 io.c
sys/amd64/include iodev.h
sys/conf files.ia64
sys/dev/io iodev.c
sys/i386/i386 io.c
sys/i386/include iodev.h
sys/ia64/conf DEFAULTS
sys/ia64/ia64 sys_machdep.c
sys/ia64/include sysarch.h
Added files:
sys/ia64/ia64 iodev_machdep.c
sys/ia64/include iodev.h
Log:
SVN rev 202097 on 2010-01-11 18:10:13Z by marcel
Use io(4) for I/O port access on ia64, rather than through sysarch(2).
I/O port access is implemented on Itanium by reading and writing to a
special region in memory. To hide details and avoid misaligned memory
accesses, a process did I/O port reads and writes by making a MD system
call. There's one fatal problem with this approach: unprivileged access
was not being prevented. /dev/io serves that purpose on amd64/i386, so
employ it on ia64 as well. Use an ioctl for doing the actual I/O and
remove the sysarch(2) interface.
Backward compatibility is not being considered. The sysarch(2) approach
was added to support X11, but support for FreeBSD/ia64 was never fully
implemented in X11. Thus, nothing gets broken that didn't need more work
to begin with.
MFC after: 1 week
Revision Changes Path
1.3 +9 -0 src/sys/amd64/amd64/io.c
1.3 +1 -0 src/sys/amd64/include/iodev.h
1.104 +2 -0 src/sys/conf/files.ia64
1.5 +1 -2 src/sys/dev/io/iodev.c
1.3 +9 -0 src/sys/i386/i386/io.c
1.3 +1 -0 src/sys/i386/include/iodev.h
1.19 +1 -0 src/sys/ia64/conf/DEFAULTS
1.1 +160 -0 src/sys/ia64/ia64/iodev_machdep.c (new)
1.10 +0 -63 src/sys/ia64/ia64/sys_machdep.c
1.1 +51 -0 src/sys/ia64/include/iodev.h (new)
1.5 +0 -9 src/sys/ia64/include/sysarch.h
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