diff options
Diffstat (limited to 'sys/dev/pci/pciide_cy693_reg.h')
| -rw-r--r-- | sys/dev/pci/pciide_cy693_reg.h | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/sys/dev/pci/pciide_cy693_reg.h b/sys/dev/pci/pciide_cy693_reg.h index 231c4e4d036..e0b57fdd4ab 100644 --- a/sys/dev/pci/pciide_cy693_reg.h +++ b/sys/dev/pci/pciide_cy693_reg.h @@ -1,4 +1,4 @@ -/* $OpenBSD: pciide_cy693_reg.h,v 1.1 1999/07/18 21:25:20 csapuntz Exp $ */ +/* $OpenBSD: pciide_cy693_reg.h,v 1.2 1999/10/04 22:54:18 deraadt Exp $ */ /* $NetBSD: pciide_cy693_reg.h,v 1.2 1998/12/03 14:06:16 bouyer Exp $ */ /* @@ -71,3 +71,21 @@ static int8_t cy_pio_rec[] = {9, 7, 4, 2, 0}; static int8_t cy_dma_pulse[] = {7, 2, 2}; static int8_t cy_dma_rec[] = {7, 1, 0}; #endif + +/* + * The cypress is quite weird: it uses 8-bit ISA registers to control + * DMA modes. + */ + +#define CY_DMA_ADDR 0x22 +#define CY_DMA_SIZE 0x2 + +#define CY_DMA_IDX 0x00 +#define CY_DMA_IDX_PRIMARY 0x30 +#define CY_DMA_IDX_SECONDARY 0x31 +#define CY_DMA_IDX_TIMEOUT 0x32 + +#define CY_DMA_DATA 0x01 +/* Multiword DMA transfer, for CY_DMA_IDX_PRIMARY or CY_DMA_IDX_SECONDARY */ +#define CY_DMA_DATA_MODE_MASK 0x03 +#define CY_DMA_DATA_SINGLE 0x04 |