Add bus_dmamem_alloc_range(9) to allow drivers to allocate DMA'able memory

within a range that is more (or less) restrictive than the default range.

ok deraadt@, stsp@

1 files changed, 3 insertions, 2 deletions

diff --git a/sys/arch/i386/isa/isa_machdep.c b/sys/arch/i386/isa/isa_machdep.c
index cef9b3e6b0c..f7daed5d7d5 100644
--- a/sys/arch/i386/isa/isa_machdep.c
+++ b/sys/arch/i386/isa/isa_machdep.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: isa_machdep.c,v 1.78 2014/12/22 03:14:59 deraadt Exp $	*/
+/*	$OpenBSD: isa_machdep.c,v 1.79 2015/01/24 15:13:55 kettenis Exp $	*/
 /*	$NetBSD: isa_machdep.c,v 1.22 1997/06/12 23:57:32 thorpej Exp $	*/
 
 /*-
@@ -148,6 +148,7 @@ struct bus_dma_tag isa_bus_dma_tag = {
 	_isa_bus_dmamap_unload,
 	_isa_bus_dmamap_sync,
 	_isa_bus_dmamem_alloc,
+	_bus_dmamem_alloc_range,
 	_bus_dmamem_free,
 	_bus_dmamem_map,
 	_bus_dmamem_unmap,
@@ -939,7 +940,7 @@ _isa_bus_dmamem_alloc(bus_dma_tag_t t, bus_size_t size, bus_size_t alignment,
 
 	/* Otherwise try anywhere (we'll bounce later) */
 	error = _bus_dmamem_alloc_range(t, size, alignment, boundary,
-	    segs, nsegs, rsegs, flags, (paddr_t)0, (paddr_t)-1);
+	    segs, nsegs, rsegs, flags, (bus_addr_t)0, (bus_addr_t)-1);
 	return (error);
 }