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 int a2091_detect(struct scsi_host_template *);
  15 int a2091_release(struct Scsi_Host *);
  16
  17 #ifndef CMD_PER_LUN
  18 #define CMD_PER_LUN 2
  19 #endif
  20
  21 #ifndef CAN_QUEUE
  22 #define CAN_QUEUE 16
  23 #endif
  24
  25 /*
  26  * if the transfer address ANDed with this results in a non-zero
  27  * result, then we can't use DMA.
  28  */
  29 #define A2091_XFER_MASK  (0xff000001)
  30
  31 typedef struct {
  32              unsigned char      pad1[64];
  33     volatile unsigned short     ISTR;
  34     volatile unsigned short     CNTR;
  35              unsigned char      pad2[60];
  36     volatile unsigned int       WTC;
  37     volatile unsigned long      ACR;
  38              unsigned char      pad3[6];
  39     volatile unsigned short     DAWR;
  40              unsigned char      pad4;
  41     volatile unsigned char      SASR;
  42              unsigned char      pad5;
  43     volatile unsigned char      SCMD;
  44              unsigned char      pad6[76];
  45     volatile unsigned short     ST_DMA;
  46     volatile unsigned short     SP_DMA;
  47     volatile unsigned short     CINT;
  48              unsigned char      pad7[2];
  49     volatile unsigned short     FLUSH;
  50 } a2091_scsiregs;
  51
  52 #define DAWR_A2091              (3)
  53
  54 /* CNTR bits. */
  55 #define CNTR_TCEN               (1<<7)
  56 #define CNTR_PREST              (1<<6)
  57 #define CNTR_PDMD               (1<<5)
  58 #define CNTR_INTEN              (1<<4)
  59 #define CNTR_DDIR               (1<<3)
  60
  61 /* ISTR bits. */
  62 #define ISTR_INTX               (1<<8)
  63 #define ISTR_INT_F              (1<<7)
  64 #define ISTR_INTS               (1<<6)
  65 #define ISTR_E_INT              (1<<5)
  66 #define ISTR_INT_P              (1<<4)
  67 #define ISTR_UE_INT             (1<<3)
  68 #define ISTR_OE_INT             (1<<2)
  69 #define ISTR_FF_FLG             (1<<1)
  70 #define ISTR_FE_FLG             (1<<0)
  71
  72 #endif /* A2091_H */