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freebsd/sys/ia64/conf
Marcel Moolenaar 409a390c33 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
2010-01-11 18:10:13 +00:00
..
.cvsignore
DEFAULTS Use io(4) for I/O port access on ia64, rather than through sysarch(2). 2010-01-11 18:10:13 +00:00
GENERIC Add INCLUDE_CONFIG_FILE in GENERIC on all non-embedded platforms. 2010-01-10 17:44:22 +00:00
GENERIC.hints
Makefile In sys/<arch>/conf/Makefile set TARGET to <arch>. That allows 2010-01-08 18:57:31 +00:00
NOTES - Use "device\t" and "options \t" for consistency. 2009-05-10 00:00:25 +00:00
SKI Integrate the new MPSAFE TTY layer to the FreeBSD operating system. 2008-08-20 08:31:58 +00:00