1 /* $OpenBSD: isadmareg.h,v 1.5 1998/01/20 18:40:30 niklas Exp $ */
2 /* $NetBSD: isadmareg.h,v 1.4 1995/06/28 04:31:48 cgd Exp $ */
3
4 #include <dev/ic/i8237reg.h>
5
6 /*
7 * Register definitions for DMA controller 1 (channels 0..3):
8 */
9 #define DMA1_CHN(c) (1*(2*(c))) /* addr reg for channel c */
10 #define DMA1_SR (1*8) /* status register */
11 #define DMA1_SMSK (1*10) /* single mask register */
12 #define DMA1_MODE (1*11) /* mode register */
13 #define DMA1_FFC (1*12) /* clear first/last FF */
14
15 #define DMA1_IOSIZE (1*12)
16
17 /*
18 * Register definitions for DMA controller 2 (channels 4..7):
19 */
20 #define DMA2_CHN(c) (2*(2*(c))) /* addr reg for channel c */
21 #define DMA2_SR (2*8) /* status register */
22 #define DMA2_SMSK (2*10) /* single mask register */
23 #define DMA2_MODE (2*11) /* mode register */
24 #define DMA2_FFC (2*12) /* clear first/last FF */
25
26 #define DMA2_IOSIZE (2*12)