diff --git a/sys/cam/cam.c b/sys/cam/cam.c
--- a/sys/cam/cam.c
+++ b/sys/cam/cam.c
@@ -52,6 +52,7 @@
 
 #ifdef _KERNEL
 #include <sys/libkern.h>
+#include <machine/bus.h>
 #include <cam/cam_queue.h>
 #include <cam/cam_xpt.h>
 
@@ -642,4 +643,23 @@
 		panic("%s: flags 0x%X unimplemented", __func__, ccb_h->flags);
 	}
 }
+
+int
+bus_dmamap_load_ccb(bus_dma_tag_t dmat, bus_dmamap_t map, union ccb *ccb,
+		    bus_dmamap_callback_t *callback, void *callback_arg,
+		    int flags)
+{
+	struct ccb_hdr *ccb_h;
+	struct memdesc mem;
+
+	ccb_h = &ccb->ccb_h;
+	if ((ccb_h->flags & CAM_DIR_MASK) == CAM_DIR_NONE) {
+		callback(callback_arg, NULL, 0, 0);
+		return (0);
+	}
+
+	mem = memdesc_ccb(ccb);
+	return (bus_dmamap_load_mem(dmat, map, &mem, callback, callback_arg,
+	    flags));
+}
 #endif
diff --git a/sys/kern/subr_bus_dma.c b/sys/kern/subr_bus_dma.c
--- a/sys/kern/subr_bus_dma.c
+++ b/sys/kern/subr_bus_dma.c
@@ -449,25 +449,6 @@
 	return (error);
 }
 
-int
-bus_dmamap_load_ccb(bus_dma_tag_t dmat, bus_dmamap_t map, union ccb *ccb,
-		    bus_dmamap_callback_t *callback, void *callback_arg,
-		    int flags)
-{
-	struct ccb_hdr *ccb_h;
-	struct memdesc mem;
-
-	ccb_h = &ccb->ccb_h;
-	if ((ccb_h->flags & CAM_DIR_MASK) == CAM_DIR_NONE) {
-		callback(callback_arg, NULL, 0, 0);
-		return (0);
-	}
-
-	mem = memdesc_ccb(ccb);
-	return (bus_dmamap_load_mem(dmat, map, &mem, callback, callback_arg,
-	    flags));
-}
-
 int
 bus_dmamap_load_bio(bus_dma_tag_t dmat, bus_dmamap_t map, struct bio *bio,
 		    bus_dmamap_callback_t *callback, void *callback_arg,