CVS commit: src/sys/arch/sparc64

[matthew green <mrg%netbsd.org@localhost>]

Module Name:    src
Committed By:   mrg
Date:           Thu Mar  4 08:01:35 UTC 2010

Modified Files:
        src/sys/arch/sparc64/include: pmap.h
        src/sys/arch/sparc64/sparc64: locore.s machdep.c pmap.c

Log Message:
- in _bus_dmamap_unload(), pmap_page_protect() and pmap_clear_reference()
  switch the dcache_flush_page() into a dcache_flush_page_all()
- in both pmap_kremove()/pmap_remove(), remove the blast_dcache() call
  and replace it with dcache_flush_page_all()
- in pmap_get_page() [used to allocate PTP's], always call pmap_zero_page(pa)
- flush the dcache of the dst page in pmap_{copy,zero}_page() by redirecting
  throught a C function that calls the (renamed) asm.  the old asm code had a
  comment about needing to do this...
- add a couple of membar #Sync's that the USIII manual recommends

based on discussions with chuq@, skrll@ and martin@.

these help my SB2000 / SB2500 with both disk / nfs builds and other tasks,
sometimes lasting for several hours before failing or asserting.


To generate a diff of this commit:
cvs rdiff -u -r1.50 -r1.51 src/sys/arch/sparc64/include/pmap.h
cvs rdiff -u -r1.321 -r1.322 src/sys/arch/sparc64/sparc64/locore.s
cvs rdiff -u -r1.251 -r1.252 src/sys/arch/sparc64/sparc64/machdep.c
cvs rdiff -u -r1.254 -r1.255 src/sys/arch/sparc64/sparc64/pmap.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.