New bus_dma interfaces for use by crypto device drivers:

o bus_dmamap_load_mbuf
o bus_dmamap_load_uio

Test on i386.  Known to compile on alpha and sparc64, but not tested.
Otherwise untried.

1 files changed, 23 insertions, 0 deletions

diff --git a/sys/sys/bus_dma.h b/sys/sys/bus_dma.h
index cb41b17..6790731 100644
--- a/sys/sys/bus_dma.h
+++ b/sys/sys/bus_dma.h
@@ -203,6 +203,29 @@ int bus_dmamap_load(bus_dma_tag_t dmat, bus_dmamap_t map, void *buf,
 		    void *callback_arg, int flags);
 
 /*
+ * Like bus_dmamap_callback but includes map size in bytes.  This is
+ * defined as a separate interface to maintain compatiiblity for users
+ * of bus_dmamap_callback_t--at some point these interfaces should be merged.
+ */
+typedef void bus_dmamap_callback2_t(void *, bus_dma_segment_t *, int, bus_size_t, int);
+/*
+ * Like bus_dmamap_load but for mbufs.  Note the use of the
+ * bus_dmamap_callback2_t interface.
+ */
+int bus_dmamap_load_mbuf(bus_dma_tag_t dmat, bus_dmamap_t map,
+			 struct mbuf *mbuf,
+			 bus_dmamap_callback2_t *callback, void *callback_arg,
+			 int flags);
+/*
+ * Like bus_dmamap_load but for uios.  Note the use of the
+ * bus_dmamap_callback2_t interface.
+ */
+int bus_dmamap_load_uio(bus_dma_tag_t dmat, bus_dmamap_t map,
+			struct uio *ui,
+			bus_dmamap_callback2_t *callback, void *callback_arg,
+			int flags);
+
+/*
  * Perform a syncronization operation on the given map.
  */
 void _bus_dmamap_sync(bus_dma_tag_t, bus_dmamap_t, bus_dmasync_op_t);