diff options
Diffstat (limited to 'sys/arch/alpha/pci/apecs_dma.c')
| -rw-r--r-- | sys/arch/alpha/pci/apecs_dma.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/sys/arch/alpha/pci/apecs_dma.c b/sys/arch/alpha/pci/apecs_dma.c index a4ba8c61253..979081ea0e9 100644 --- a/sys/arch/alpha/pci/apecs_dma.c +++ b/sys/arch/alpha/pci/apecs_dma.c @@ -1,4 +1,4 @@ -/* $OpenBSD: apecs_dma.c,v 1.4 2006/03/20 01:00:58 martin Exp $ */ +/* $OpenBSD: apecs_dma.c,v 1.5 2006/04/04 21:20:40 brad Exp $ */ /* $NetBSD: apecs_dma.c,v 1.13 2000/06/29 08:58:45 mrg Exp $ */ /*- @@ -87,6 +87,9 @@ void apecs_bus_dmamap_unload_sgmap(bus_dma_tag_t, bus_dmamap_t); #define APECS_SGMAP_MAPPED_BASE (8*1024*1024) #define APECS_SGMAP_MAPPED_SIZE (8*1024*1024) +/* APECS has a 256-byte out-bound DMA prefetch threshold. */ +#define APECS_SGMAP_PFTHRESH 256 + /* * Macro to flush APECS scatter/gather TLB. */ @@ -140,6 +143,7 @@ apecs_dma_init(acp) t->_next_window = NULL; t->_boundary = 0; t->_sgmap = &acp->ac_sgmap; + t->_pfthresh = APECS_SGMAP_PFTHRESH; t->_get_tag = apecs_dma_get_tag; t->_dmamap_create = alpha_sgmap_dmamap_create; t->_dmamap_destroy = alpha_sgmap_dmamap_destroy; |