409a390c33
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 |
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.. | ||
pc | ||
_align.h | ||
_bus.h | ||
_inttypes.h | ||
_limits.h | ||
_regset.h | ||
_stdint.h | ||
_types.h | ||
acpica_machdep.h | ||
asm.h | ||
atomic.h | ||
bootinfo.h | ||
bus_dma.h | ||
bus.h | ||
clock.h | ||
cpu.h | ||
cpufunc.h | ||
db_machdep.h | ||
dig64.h | ||
efi.h | ||
elf.h | ||
endian.h | ||
exec.h | ||
float.h | ||
floatingpoint.h | ||
fpu.h | ||
frame.h | ||
gdb_machdep.h | ||
ia64_cpu.h | ||
ieee.h | ||
ieeefp.h | ||
in_cksum.h | ||
intr.h | ||
intrcnt.h | ||
iodev.h | ||
kdb.h | ||
limits.h | ||
mca.h | ||
md_var.h | ||
memdev.h | ||
mutex.h | ||
nexusvar.h | ||
pal.h | ||
param.h | ||
pcb.h | ||
pci_cfgreg.h | ||
pcpu.h | ||
pmap.h | ||
pmc_mdep.h | ||
proc.h | ||
profile.h | ||
pte.h | ||
ptrace.h | ||
reg.h | ||
reloc.h | ||
resource.h | ||
runq.h | ||
sal.h | ||
sapicreg.h | ||
sapicvar.h | ||
setjmp.h | ||
sf_buf.h | ||
sigframe.h | ||
signal.h | ||
smp.h | ||
stdarg.h | ||
sysarch.h | ||
ucontext.h | ||
unwind.h | ||
varargs.h | ||
vm.h | ||
vmparam.h |