diff options
| author | Owain Ainsworth <oga@cvs.openbsd.org> | 2009-12-09 14:31:58 +0000 |
|---|---|---|
| committer | Owain Ainsworth <oga@cvs.openbsd.org> | 2009-12-09 14:31:58 +0000 |
| commit | 9542e90dfa3fb5369646f600c21d3c2863e6dd69 (patch) | |
| tree | c86b4e53eaae863027ab437c751c813cf63bcf62 /sys/arch/i386/include | |
| parent | 580e00e95ea51b295ec9285aca0df412609003ac (diff) | |
add two new MD only pmap apis to amd64 and i386 (not to be used in MI
code):
pmap_flush_cache(vaddr_t, vsize_t) and pmap_flush_page(paddr_t) to flush
the cache for virtual addresses and physical pages respectively using
the clflush instruction. These apis will shortly be used by the agp
bus_dma functions to avoid doing a wbinvd on each dmamap_sync.
ok kettenis@, some comments from miod@
Diffstat (limited to 'sys/arch/i386/include')
| -rw-r--r-- | sys/arch/i386/include/pmap.h | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/sys/arch/i386/include/pmap.h b/sys/arch/i386/include/pmap.h index c380b253d44..bd62351d892 100644 --- a/sys/arch/i386/include/pmap.h +++ b/sys/arch/i386/include/pmap.h @@ -1,4 +1,4 @@ -/* $OpenBSD: pmap.h,v 1.53 2009/08/11 17:15:54 oga Exp $ */ +/* $OpenBSD: pmap.h,v 1.54 2009/12/09 14:31:57 oga Exp $ */ /* $NetBSD: pmap.h,v 1.44 2000/04/24 17:18:18 thorpej Exp $ */ /* @@ -402,6 +402,14 @@ void pmap_tlb_shootwait(void); void pmap_prealloc_lowmem_ptp(paddr_t); +/* + * functions for flushing the cache for vaddrs and pages. + * these functions are not part of the MI pmap interface and thus + * should not be used as such. + */ +void pmap_flush_cache(vaddr_t, vsize_t); +void pmap_flush_page(paddr_t); + #define PMAP_GROWKERNEL /* turn on pmap_growkernel interface */ /* |