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 */ 74