Module Name: src
Committed By: pooka
Date: Mon Sep 14 15:08:50 UTC 2015
Modified Files:
src/sys/rump/dev/lib/libugenhc: ugenhc_dma.c
Log Message:
Note in comment why this "d"ma implementation is not in libusb.
To generate a diff of this commit:
cvs rdiff -u -r1.1 -r1.2 src/sys/rump/dev/lib/libugenhc/ugenhc_dma.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/rump/dev/lib/libugenhc/ugenhc_dma.c
diff -u src/sys/rump/dev/lib/libugenhc/ugenhc_dma.c:1.1 src/sys/rump/dev/lib/libugenhc/ugenhc_dma.c:1.2
--- src/sys/rump/dev/lib/libugenhc/ugenhc_dma.c:1.1 Thu Sep 19 17:55:22 2013
+++ src/sys/rump/dev/lib/libugenhc/ugenhc_dma.c Mon Sep 14 15:08:50 2015
@@ -1,4 +1,4 @@
-/* $NetBSD: ugenhc_dma.c,v 1.1 2013/09/19 17:55:22 pooka Exp $ */
+/* $NetBSD: ugenhc_dma.c,v 1.2 2015/09/14 15:08:50 pooka Exp $ */
/*
* Copyright (c) 2009 Antti Kantee. All Rights Reserved.
@@ -34,7 +34,16 @@
#include <sys/bus.h>
/*
- * bus_dma(9) that works for USB drivers
+ * bus_dma(9) that works for USB drivers.
+ *
+ * So why is it here instead of in libusb? Well, first of all, it's
+ * actually a bus_dma implementation which works with ugenhc. Of course,
+ * ugenhc doesn't make any bus_dma calls itself, all of those calls come
+ * from the usb code. However, the USB component can be paired with other
+ * USB host controllers, such as {e,o,u}hci. Therefore, we keep the "D"MA
+ * code here.
+ *
+ * Note: this implementation requires a __HAVE_NEW_STYLE_BUS_H arch
*/
int
