drivers/scsi/a3000.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef A3000_H
   3 #define A3000_H
   4
   5 /* $Id: a3000.h,v 1.4 1997/01/19 23:07:10 davem Exp $
   6  *
   7  * Header file for the Amiga 3000 built-in SCSI controller for Linux
   8  *
   9  * Written and (C) 1993, Hamish Macdonald, see a3000.c for more info
  10  *
  11  */
  12
  13 #include <linux/types.h>
  14
  15 #ifndef CMD_PER_LUN
  16 #define CMD_PER_LUN             2
  17 #endif
  18
  19 #ifndef CAN_QUEUE
  20 #define CAN_QUEUE               16
  21 #endif
  22
  23 /*
  24  * if the transfer address ANDed with this results in a non-zero
  25  * result, then we can't use DMA.
  26  */
  27 #define A3000_XFER_MASK         (0x00000003)
  28
  29 struct a3000_scsiregs {
  30                  unsigned char  pad1[2];
  31         volatile unsigned short DAWR;
  32         volatile unsigned int   WTC;
  33                  unsigned char  pad2[2];
  34         volatile unsigned short CNTR;
  35         volatile unsigned long  ACR;
  36                  unsigned char  pad3[2];
  37         volatile unsigned short ST_DMA;
  38                  unsigned char  pad4[2];
  39         volatile unsigned short FLUSH;
  40                  unsigned char  pad5[2];
  41         volatile unsigned short CINT;
  42                  unsigned char  pad6[2];
  43         volatile unsigned short ISTR;
  44                  unsigned char  pad7[30];
  45         volatile unsigned short SP_DMA;
  46                  unsigned char  pad8;
  47         volatile unsigned char  SASR;
  48                  unsigned char  pad9;
  49         volatile unsigned char  SCMD;
  50 };
  51
  52 #define DAWR_A3000              (3)
  53
  54 /* CNTR bits. */
  55 #define CNTR_TCEN               (1<<5)
  56 #define CNTR_PREST              (1<<4)
  57 #define CNTR_PDMD               (1<<3)
  58 #define CNTR_INTEN              (1<<2)
  59 #define CNTR_DDIR               (1<<1)
  60 #define CNTR_IO_DX              (1<<0)
  61
  62 /* ISTR bits. */
  63 #define ISTR_INTX               (1<<8)
  64 #define ISTR_INT_F              (1<<7)
  65 #define ISTR_INTS               (1<<6)
  66 #define ISTR_E_INT              (1<<5)
  67 #define ISTR_INT_P              (1<<4)
  68 #define ISTR_UE_INT             (1<<3)
  69 #define ISTR_OE_INT             (1<<2)
  70 #define ISTR_FF_FLG             (1<<1)
  71 #define ISTR_FE_FLG             (1<<0)
  72
  73 #endif /* A3000_H */