diff options
Diffstat (limited to 'sys/arch/arc/isa/isadmareg.h')
| -rw-r--r-- | sys/arch/arc/isa/isadmareg.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/sys/arch/arc/isa/isadmareg.h b/sys/arch/arc/isa/isadmareg.h new file mode 100644 index 00000000000..185016060f2 --- /dev/null +++ b/sys/arch/arc/isa/isadmareg.h @@ -0,0 +1,22 @@ +/* $NetBSD: isadmareg.h,v 1.4 1995/06/28 04:31:48 cgd Exp $ */ + +#include <dev/ic/i8237reg.h> + +#define DMA_NREG 16 +/* + * Register definitions for DMA controller 1 (channels 0..3): + */ +#define DMA1_CHN(c) (1*(2*(c))) /* addr reg for channel c */ +#define DMA1_SR (1*8) /* status register */ +#define DMA1_SMSK (1*10) /* single mask register */ +#define DMA1_MODE (1*11) /* mode register */ +#define DMA1_FFC (1*12) /* clear first/last FF */ + +/* + * Register definitions for DMA controller 2 (channels 4..7): + */ +#define DMA2_CHN(c) (2*(2*(c))) /* addr reg for channel c */ +#define DMA2_SR (2*8) /* status register */ +#define DMA2_SMSK (2*10) /* single mask register */ +#define DMA2_MODE (2*11) /* mode register */ +#define DMA2_FFC (2*12) /* clear first/last FF */ |