diff options
Diffstat (limited to 'drivers/scsi/a2091.h')
| -rw-r--r-- | drivers/scsi/a2091.h | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/drivers/scsi/a2091.h b/drivers/scsi/a2091.h new file mode 100644 index 0000000000..8d8a4074a5 --- /dev/null +++ b/drivers/scsi/a2091.h @@ -0,0 +1,70 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef A2091_H +#define A2091_H + +/* $Id: a2091.h,v 1.4 1997/01/19 23:07:09 davem Exp $ + * + * Header file for the Commodore A2091 Zorro II SCSI controller for Linux + * + * Written and (C) 1993, Hamish Macdonald, see a2091.c for more info + * + */ + +#include <linux/types.h> + +#ifndef CMD_PER_LUN +#define CMD_PER_LUN 2 +#endif + +#ifndef CAN_QUEUE +#define CAN_QUEUE 16 +#endif + +/* + * if the transfer address ANDed with this results in a non-zero + * result, then we can't use DMA. + */ +#define A2091_XFER_MASK (0xff000001) + +struct a2091_scsiregs { + unsigned char pad1[64]; + volatile unsigned short ISTR; + volatile unsigned short CNTR; + unsigned char pad2[60]; + volatile unsigned int WTC; + volatile unsigned long ACR; + unsigned char pad3[6]; + volatile unsigned short DAWR; + unsigned char pad4; + volatile unsigned char SASR; + unsigned char pad5; + volatile unsigned char SCMD; + unsigned char pad6[76]; + volatile unsigned short ST_DMA; + volatile unsigned short SP_DMA; + volatile unsigned short CINT; + unsigned char pad7[2]; + volatile unsigned short FLUSH; +}; + +#define DAWR_A2091 (3) + +/* CNTR bits. */ +#define CNTR_TCEN (1<<7) +#define CNTR_PREST (1<<6) +#define CNTR_PDMD (1<<5) +#define CNTR_INTEN (1<<4) +#define CNTR_DDIR (1<<3) + +/* ISTR bits. */ +#define ISTR_INTX (1<<8) +#define ISTR_INT_F (1<<7) +#define ISTR_INTS (1<<6) +#define ISTR_E_INT (1<<5) +#define ISTR_INT_P (1<<4) +#define ISTR_UE_INT (1<<3) +#define ISTR_OE_INT (1<<2) +#define ISTR_FF_FLG (1<<1) +#define ISTR_FE_FLG (1<<0) + +#endif /* A2091_H */ |