diff options
Diffstat (limited to 'sys/arch/sparc64/dev/iommu.c')
| -rw-r--r-- | sys/arch/sparc64/dev/iommu.c | 54 |
1 files changed, 34 insertions, 20 deletions
diff --git a/sys/arch/sparc64/dev/iommu.c b/sys/arch/sparc64/dev/iommu.c index 2ee311b4a4e..6cdda01bf10 100644 --- a/sys/arch/sparc64/dev/iommu.c +++ b/sys/arch/sparc64/dev/iommu.c @@ -1,4 +1,4 @@ -/* $OpenBSD: iommu.c,v 1.31 2003/06/11 03:16:12 henric Exp $ */ +/* $OpenBSD: iommu.c,v 1.32 2003/06/11 04:00:11 henric Exp $ */ /* $NetBSD: iommu.c,v 1.47 2002/02/08 20:03:45 eeh Exp $ */ /* @@ -96,6 +96,8 @@ int iommu_iomap_unload_map(struct iommu_state *, struct iommu_map_state *); struct iommu_map_state *iommu_iomap_create(int); void iommu_iomap_destroy(struct iommu_map_state *); void iommu_iomap_clear_pages(struct iommu_map_state *); +void _iommu_dvmamap_sync(bus_dma_tag_t, bus_dma_tag_t, bus_dmamap_t, + bus_addr_t, bus_size_t, int); /* * Initiate an STC entry flush. @@ -1467,7 +1469,7 @@ iommu_dvmamap_print_map(bus_dma_tag_t t, struct iommu_state *is, } void -iommu_dvmamap_sync(bus_dma_tag_t t, bus_dma_tag_t t0, bus_dmamap_t map, +_iommu_dvmamap_sync(bus_dma_tag_t t, bus_dma_tag_t t0, bus_dmamap_t map, bus_addr_t offset, bus_size_t len, int ops) { struct iommu_state *is; @@ -1476,27 +1478,9 @@ iommu_dvmamap_sync(bus_dma_tag_t t, bus_dma_tag_t t0, bus_dmamap_t map, bus_size_t count; int i, needsflush = 0; -#ifdef DEBUG - if (ims == NULL) - panic("iommu_dvmamap_sync: null map state"); - if (ims->ims_sb == NULL) - panic("iommu_dvmamap_sync: null sb"); - if (ims->ims_sb->sb_iommu == NULL) - panic("iommu_dvmamap_sync: null iommu"); -#endif /* DEBUG */ - sb = ims->ims_sb; is = sb->sb_iommu; - if ((ims->ims_flags & IOMMU_MAP_STREAM) == 0 || (len == 0)) - return; - - if (ops & (BUS_DMASYNC_PREREAD | BUS_DMASYNC_POSTWRITE)) - return; - - if ((ops & (BUS_DMASYNC_POSTREAD | BUS_DMASYNC_PREWRITE)) == 0) - return; - for (i = 0; i < map->dm_nsegs; i++) { if (offset < map->dm_segs[i].ds_len) break; @@ -1514,13 +1498,43 @@ iommu_dvmamap_sync(bus_dma_tag_t t, bus_dma_tag_t t0, bus_dmamap_t map, len -= count; } +#ifdef DIAGNOSTIC if (i == map->dm_nsegs && len > 0) panic("iommu_dvmamap_sync: leftover %lu", len); +#endif if (needsflush) iommu_strbuf_flush_done(ims); } +void +iommu_dvmamap_sync(bus_dma_tag_t t, bus_dma_tag_t t0, bus_dmamap_t map, + bus_addr_t offset, bus_size_t len, int ops) +{ + struct iommu_map_state *ims = map->_dm_cookie; + +#ifdef DIAGNOSTIC + if (ims == NULL) + panic("iommu_dvmamap_sync: null map state"); + if (ims->ims_sb == NULL) + panic("iommu_dvmamap_sync: null sb"); + if (ims->ims_sb->sb_iommu == NULL) + panic("iommu_dvmamap_sync: null iommu"); +#endif + if (len == 0) + return; + + if (ops & BUS_DMASYNC_PREWRITE) + membar(MemIssue); + + if ((ims->ims_flags & IOMMU_MAP_STREAM) && + (ops & (BUS_DMASYNC_POSTREAD | BUS_DMASYNC_PREWRITE))) + _iommu_dvmamap_sync(t, t0, map, offset, len, ops); + + if (ops & BUS_DMASYNC_POSTREAD) + membar(MemIssue); +} + /* * Flush an individual dma segment, returns non-zero if the streaming buffers * need flushing afterwards. |