1 /* $NetBSD: isadmareg.h,v 1.2 1994/10/27 04:17:08 cgd Exp $ */ 2 3 #include <i386/isa/ic/i8237.h> 4 5 /* 6 * Register definitions for DMA controller 1 (channels 0..3): 7 */ 8 #define DMA1_CHN(c) (IO_DMA1 + 1*(2*(c))) /* addr reg for channel c */ 9 #define DMA1_SR (IO_DMA1 + 1*8) /* status register */ 10 #define DMA1_SMSK (IO_DMA1 + 1*10) /* single mask register */ 11 #define DMA1_MODE (IO_DMA1 + 1*11) /* mode register */ 12 #define DMA1_FFC (IO_DMA1 + 1*12) /* clear first/last FF */ 13 14 /* 15 * Register definitions for DMA controller 2 (channels 4..7): 16 */ 17 #define DMA2_CHN(c) (IO_DMA2 + 2*(2*(c))) /* addr reg for channel c */ 18 #define DMA2_SR (IO_DMA2 + 2*8) /* status register */ 19 #define DMA2_SMSK (IO_DMA2 + 2*10) /* single mask register */ 20 #define DMA2_MODE (IO_DMA2 + 2*11) /* mode register */ 21 #define DMA2_FFC (IO_DMA2 + 2*12) /* clear first/last FF */ 22