diff options
| author | Per Fogelstrom <pefo@cvs.openbsd.org> | 2004-09-27 17:40:25 +0000 |
|---|---|---|
| committer | Per Fogelstrom <pefo@cvs.openbsd.org> | 2004-09-27 17:40:25 +0000 |
| commit | f5b9bdbebfa8bad301ddc0e2a2d9d26fbc47d24b (patch) | |
| tree | 141ee475ac579a1758029f6e635b6ee51a394154 /sys/arch/mips64/include | |
| parent | 83dfef72c076af993a379b674041e30dcc3fa52d (diff) | |
Change busdma to map coherent dmamem memory as uncached if the host
system has non-coherent caches. This will help some drivers to work better.
Diffstat (limited to 'sys/arch/mips64/include')
| -rw-r--r-- | sys/arch/mips64/include/pmap.h | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/sys/arch/mips64/include/pmap.h b/sys/arch/mips64/include/pmap.h index 6514b8831dd..515ce2eb6eb 100644 --- a/sys/arch/mips64/include/pmap.h +++ b/sys/arch/mips64/include/pmap.h @@ -1,4 +1,4 @@ -/* $OpenBSD: pmap.h,v 1.5 2004/09/23 08:42:38 pefo Exp $ */ +/* $OpenBSD: pmap.h,v 1.6 2004/09/27 17:40:24 pefo Exp $ */ /* * Copyright (c) 1987 Carnegie-Mellon University @@ -89,6 +89,14 @@ typedef struct pmap { } *pmap_t; #ifdef _KERNEL + +/* flags for pv_entry */ +#define PV_UNCACHED 0x0001 /* Page is mapped unchached */ +#define PV_CACHED 0x0002 /* Page has been cached */ +#define PV_ATTR_MOD 0x0004 +#define PV_ATTR_REF 0x0008 +#define PV_PRESERVE (PV_UNCACHED|PV_CACHED|PV_ATTR_MOD|PV_ATTR_REF) + extern struct pmap kernel_pmap_store; #define pmap_resident_count(pmap) ((pmap)->pm_stats.resident_count) @@ -107,6 +115,7 @@ int pmap_is_page_ro( pmap_t, vaddr_t, int); void pmap_kenter_cache(vaddr_t va, paddr_t pa, vm_prot_t prot, int cache); void pmap_prefer(vaddr_t, vaddr_t *); void pmap_set_modify(vm_page_t); +void pmap_page_cache(vm_page_t, int); #define pmap_proc_iflush(p,va,len) /* nothing yet (handled in trap now) */ #define pmap_unuse_final(p) /* nothing yet */ |