diff options
| author | Miod Vallat <miod@cvs.openbsd.org> | 2009-05-08 18:42:08 +0000 |
|---|---|---|
| committer | Miod Vallat <miod@cvs.openbsd.org> | 2009-05-08 18:42:08 +0000 |
| commit | 7b358d538e466ebcf6cfb38854d5c956a796334c (patch) | |
| tree | f30b203bb8a8ac08b80af1f76efece5030048902 /sys/arch/sgi/include | |
| parent | d5d82b7603a15d62361a97e81cd7c3ab892b78f5 (diff) | |
Add a new page freelist, to which memory suitable for 32-bit dma on
xbridge(4) is assigned. Then, make bus_dmamem_alloc() allocate from this
range only.
This is transparent on O2, and makes sure the bus_dma memory address
will fit in the 2GB direct map of xbridge(4) chips - this is necessary for
PCI devices which do not handle 64 bit dma addresses.
Diffstat (limited to 'sys/arch/sgi/include')
| -rw-r--r-- | sys/arch/sgi/include/vmparam.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/sys/arch/sgi/include/vmparam.h b/sys/arch/sgi/include/vmparam.h index ba4d5e73e58..33f33aa2ff2 100644 --- a/sys/arch/sgi/include/vmparam.h +++ b/sys/arch/sgi/include/vmparam.h @@ -1,10 +1,13 @@ -/* $OpenBSD: vmparam.h,v 1.2 2008/04/07 22:41:52 miod Exp $ */ +/* $OpenBSD: vmparam.h,v 1.3 2009/05/08 18:42:04 miod Exp $ */ #ifndef _SGI_VMPARAM_H_ #define _SGI_VMPARAM_H_ #define VM_PHYSSEG_MAX 32 /* Max number of physical memory segments */ +#define VM_NFREELIST 2 +#define VM_FREELIST_DMA32 1 /* memory under 2GB suitable for DMA */ + #include <mips64/vmparam.h> #endif /* _SGI_VMPARAM_H_ */ |