From 976cdcf77bc13402ceb61cf212a417801d36a9bf Mon Sep 17 00:00:00 2001
From: David du Colombier <0intro@gmail.com>
Date: Sat, 1 Jul 1995 00:00:00 +0000
Subject: [PATCH] Plan 9 from Bell Labs 1995-07-01

---
 pc/dma.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/pc/dma.c b/pc/dma.c
index 387ed3041dcc45d2f85a1bc7c1c034f6e8524950..e8054adb508a2bec71c38e80154f87f0e881cc12 100644
--- a/pc/dma.c
+++ b/pc/dma.c
@@ -206,3 +206,13 @@ dmaend(int chan)
 	memmove(xp->va, (void*)(xp->pg.va), xp->len);
 	xp->len = 0;
 }
+
+void
+dmaemode(int chan, int value)
+{
+	if(chan < 4)
+		outb(0x40b, value|chan);
+	else
+		outb(0x4d6, value|chan);
+
+}