LXR linux/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
  29struct 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 */
  74