drivers/scsi/a2091.h

   1 #ifndef A2091_H
   2 #define A2091_H
   3
   4 /* $Id: a2091.h,v 1.4 1997/01/19 23:07:09 davem Exp $
   5  *
   6  * Header file for the Commodore A2091 Zorro II SCSI controller for Linux
   7  *
   8  * Written and (C) 1993, Hamish Macdonald, see a2091.c for more info
   9  *
  10  */
  11
  12 #include <linux/types.h>
  13
  14 #ifndef CMD_PER_LUN
  15 #define CMD_PER_LUN             2
  16 #endif
  17
  18 #ifndef CAN_QUEUE
  19 #define CAN_QUEUE               16
  20 #endif
  21
  22 /*
  23  * if the transfer address ANDed with this results in a non-zero
  24  * result, then we can't use DMA.
  25  */
  26 #define A2091_XFER_MASK         (0xff000001)
  27
  28 struct a2091_scsiregs {
  29                  unsigned char  pad1[64];
  30         volatile unsigned short ISTR;
  31         volatile unsigned short CNTR;
  32                  unsigned char  pad2[60];
  33         volatile unsigned int   WTC;
  34         volatile unsigned long  ACR;
  35                  unsigned char  pad3[6];
  36         volatile unsigned short DAWR;
  37                  unsigned char  pad4;
  38         volatile unsigned char  SASR;
  39                  unsigned char  pad5;
  40         volatile unsigned char  SCMD;
  41                  unsigned char  pad6[76];
  42         volatile unsigned short ST_DMA;
  43         volatile unsigned short SP_DMA;
  44         volatile unsigned short CINT;
  45                  unsigned char  pad7[2];
  46         volatile unsigned short FLUSH;
  47 };
  48
  49 #define DAWR_A2091              (3)
  50
  51 /* CNTR bits. */
  52 #define CNTR_TCEN               (1<<7)
  53 #define CNTR_PREST              (1<<6)
  54 #define CNTR_PDMD               (1<<5)
  55 #define CNTR_INTEN              (1<<4)
  56 #define CNTR_DDIR               (1<<3)
  57
  58 /* ISTR bits. */
  59 #define ISTR_INTX               (1<<8)
  60 #define ISTR_INT_F              (1<<7)
  61 #define ISTR_INTS               (1<<6)
  62 #define ISTR_E_INT              (1<<5)
  63 #define ISTR_INT_P              (1<<4)
  64 #define ISTR_UE_INT             (1<<3)
  65 #define ISTR_OE_INT             (1<<2)
  66 #define ISTR_FF_FLG             (1<<1)
  67 #define ISTR_FE_FLG             (1<<0)
  68
  69 #endif /* A2091_H */