Date: Sun, 14 Feb 2010 16:56:24 +0000 (UTC) From: Marcel Moolenaar <marcel@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/ia64/acpica madt.c src/sys/ia64/ia64 bus_machdep.c efi.c interrupt.c machdep.c mp_machdep.c pmap.c sapic.c src/sys/ia64/include bus.h intr.h md_var.h pmap.h vmparam.h Message-ID: <201002141656.o1EGuYtK057851@repoman.freebsd.org>
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marcel 2010-02-14 16:56:24 UTC
FreeBSD src repository
Modified files:
sys/ia64/acpica madt.c
sys/ia64/ia64 bus_machdep.c efi.c interrupt.c machdep.c
mp_machdep.c pmap.c sapic.c
sys/ia64/include bus.h intr.h md_var.h pmap.h vmparam.h
Log:
SVN rev 203883 on 2010-02-14 16:56:24Z by marcel
Some code churn:
o Eliminate IA64_PHYS_TO_RR6 and change all places where the macro is used
by calling either bus_space_map() or pmap_mapdev().
o Implement bus_space_map() in terms of pmap_mapdev() and implement
bus_space_unmap() in terms of pmap_unmapdev().
o Have ia64_pib hold the uncached virtual address of the processor interrupt
block throughout the kernel's life and access the elements of the PIB
through this structure pointer.
This is a non-functional change with the exception of using ia64_ld1() and
ia64_st8() to write to the PIB. We were still using assignments, for which
the compiler generates semaphore reads -- which cause undefined behaviour
for uncacheable memory. Note also that the memory barriers in ipi_send() are
critical for proper functioning.
With all the mapping of uncached memory done by pmap_mapdev(), we can keep
track of the translations and wire them in the CPU. This then eliminates
the need to reserve a whole region for uncached I/O and it eliminates
translation traps for device I/O accesses.
Revision Changes Path
1.22 +2 -4 src/sys/ia64/acpica/madt.c
1.2 +21 -0 src/sys/ia64/ia64/bus_machdep.c
1.9 +4 -2 src/sys/ia64/ia64/efi.c
1.76 +1 -2 src/sys/ia64/ia64/interrupt.c
1.256 +9 -1 src/sys/ia64/ia64/machdep.c
1.79 +14 -12 src/sys/ia64/ia64/mp_machdep.c
1.210 +5 -3 src/sys/ia64/ia64/pmap.c
1.16 +4 -3 src/sys/ia64/ia64/sapic.c
1.26 +6 -20 src/sys/ia64/include/bus.h
1.6 +11 -13 src/sys/ia64/include/intr.h
1.32 +8 -8 src/sys/ia64/include/md_var.h
1.31 +1 -1 src/sys/ia64/include/pmap.h
1.20 +0 -1 src/sys/ia64/include/vmparam.h
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