diff options
Diffstat (limited to 'sys/arch/sparc64/dev/iommu.c')
| -rw-r--r-- | sys/arch/sparc64/dev/iommu.c | 30 |
1 files changed, 22 insertions, 8 deletions
diff --git a/sys/arch/sparc64/dev/iommu.c b/sys/arch/sparc64/dev/iommu.c index f14276c3ef5..711cc35cec4 100644 --- a/sys/arch/sparc64/dev/iommu.c +++ b/sys/arch/sparc64/dev/iommu.c @@ -1,4 +1,4 @@ -/* $OpenBSD: iommu.c,v 1.16 2002/03/26 18:13:11 jason Exp $ */ +/* $OpenBSD: iommu.c,v 1.17 2002/05/13 19:43:48 jason Exp $ */ /* $NetBSD: iommu.c,v 1.47 2002/02/08 20:03:45 eeh Exp $ */ /* @@ -518,14 +518,22 @@ iommu_dvmamap_load(t, is, map, buf, buflen, p, flags) if ((boundary = (map->dm_segs[0]._ds_boundary)) == 0) boundary = map->_dm_boundary; align = max(map->dm_segs[0]._ds_align, NBPG); + + if (flags & BUS_DMA_24BIT) { + sgstart = max(is->is_dvmamap->ex_start, 0xff000000); + sgend = min(is->is_dvmamap->ex_end, 0xffffffff); + } else { + sgstart = is->is_dvmamap->ex_start; + sgend = is->is_dvmamap->ex_end; + } s = splhigh(); /* * If our segment size is larger than the boundary we need to * split the transfer up int little pieces ourselves. */ - err = extent_alloc(is->is_dvmamap, sgsize, align, 0, - (sgsize > boundary) ? 0 : boundary, - EX_NOWAIT|EX_BOUNDZERO, (u_long *)&dvmaddr); + err = extent_alloc_subregion(is->is_dvmamap, sgstart, sgend, + sgsize, align, 0, (sgsize > boundary) ? 0 : boundary, + EX_NOWAIT|EX_BOUNDZERO, (u_long *)&dvmaddr); splx(s); #ifdef DEBUG @@ -735,15 +743,21 @@ iommu_dvmamap_load_raw(t, is, map, segs, nsegs, flags, size) } sgsize = round_page(sgsize); + if (flags & BUS_DMA_24BIT) { + sgstart = max(is->is_dvmamap->ex_start, 0xff000000); + sgend = min(is->is_dvmamap->ex_end, 0xffffffff); + } else { + sgstart = is->is_dvmamap->ex_start; + sgend = is->is_dvmamap->ex_end; + } s = splhigh(); /* * If our segment size is larger than the boundary we need to * split the transfer up into little pieces ourselves. */ - err = extent_alloc(is->is_dvmamap, sgsize, align, 0, - (sgsize > boundary) ? 0 : boundary, - ((flags & BUS_DMA_NOWAIT) == 0 ? EX_WAITOK : EX_NOWAIT) | - EX_BOUNDZERO, (u_long *)&dvmaddr); + err = extent_alloc_subregion(is->is_dvmamap, sgstart, sgend, + sgsize, align, 0, (sgsize > boundary) ? 0 : boundary, + EX_NOWAIT|EX_BOUNDZERO, (u_long *)&dvmaddr); splx(s); if (err != 0) |