diff --git a/sys/sys/ata.h b/sys/sys/ata.h
index fcb891ed1588..52442afa7453 100644
--- a/sys/sys/ata.h
+++ b/sys/sys/ata.h
@@ -1,5 +1,5 @@
 /*-
- * Copyright (c) 2000,2001,2002 Søren Schmidt <sos@FreeBSD.org>
+ * Copyright (c) 2000 - 2003 Søren Schmidt <sos@FreeBSD.org>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -339,14 +339,19 @@ struct ata_params {
 #define ATA_PIO2		0x0a
 #define ATA_PIO3		0x0b
 #define ATA_PIO4		0x0c
+#define ATA_PIO_MAX		0x0f
 #define ATA_DMA			0x10
-#define ATA_WDMA		0x20
+#define ATA_WDMA0		0x20
+#define ATA_WDMA1		0x21
 #define ATA_WDMA2		0x22
-#define ATA_UDMA		0x40
+#define ATA_UDMA0		0x40
+#define ATA_UDMA1		0x41
 #define ATA_UDMA2		0x42
+#define ATA_UDMA3		0x43
 #define ATA_UDMA4		0x44
 #define ATA_UDMA5		0x45
 #define ATA_UDMA6		0x46
+#define ATA_DMA_MAX		0x4f
 
 struct ata_cmd {
     int				channel;