diff options
Diffstat (limited to 'sys/arch/sparc64/sparc64/machdep.c')
| -rw-r--r-- | sys/arch/sparc64/sparc64/machdep.c | 25 |
1 files changed, 22 insertions, 3 deletions
diff --git a/sys/arch/sparc64/sparc64/machdep.c b/sys/arch/sparc64/sparc64/machdep.c index b4b34288760..8b9261bed53 100644 --- a/sys/arch/sparc64/sparc64/machdep.c +++ b/sys/arch/sparc64/sparc64/machdep.c @@ -1,4 +1,4 @@ -/* $OpenBSD: machdep.c,v 1.75 2005/03/29 19:34:07 kettenis Exp $ */ +/* $OpenBSD: machdep.c,v 1.76 2005/07/09 22:51:13 robert Exp $ */ /* $NetBSD: machdep.c,v 1.108 2001/07/24 19:30:14 eeh Exp $ */ /*- @@ -1621,10 +1621,29 @@ _bus_dmamem_mmap(t, t0, segs, nsegs, off, prot, flags) off_t off; int prot, flags; { + int i; - panic("_bus_dmamem_mmap: not implemented"); -} + for (i = 0; i < nsegs; i++) { +#ifdef DIAGNOSTIC + if (off & PGOFSET) + panic("_bus_dmamem_mmap: offset unaligned"); + if (segs[i].ds_addr & PGOFSET) + panic("_bus_dmamem_mmap: segment unaligned"); + if (segs[i].ds_len & PGOFSET) + panic("_bus_dmamem_mmap: segment size not multiple" + " of page size"); +#endif + if (off >= segs[i].ds_len) { + off -= segs[i].ds_len; + continue; + } + + return (sparc64_btop((caddr_t)segs[i].ds_addr + off)); + } + /* Page not found. */ + return (-1); +} struct sparc_bus_dma_tag mainbus_dma_tag = { NULL, |