1 #ifndef A3000_H 2 #define A3000_H 3 4 /* $Id: a3000.h,v 1.4 1997/01/19 23:07:10 davem Exp $ 5 * 6 * Header file for the Amiga 3000 built-in SCSI controller for Linux 7 * 8 * Written and (C) 1993, Hamish Macdonald, see a3000.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 A3000_XFER_MASK (0x00000003) 27 28 typedef struct { 29 unsigned char pad1[2]; 30 volatile unsigned short DAWR; 31 volatile unsigned int WTC; 32 unsigned char pad2[2]; 33 volatile unsigned short CNTR; 34 volatile unsigned long ACR; 35 unsigned char pad3[2]; 36 volatile unsigned short ST_DMA; 37 unsigned char pad4[2]; 38 volatile unsigned short FLUSH; 39 unsigned char pad5[2]; 40 volatile unsigned short CINT; 41 unsigned char pad6[2]; 42 volatile unsigned short ISTR; 43 unsigned char pad7[30]; 44 volatile unsigned short SP_DMA; 45 unsigned char pad8; 46 volatile unsigned char SASR; 47 unsigned char pad9; 48 volatile unsigned char SCMD; 49 } a3000_scsiregs; 50 51 #define DAWR_A3000 (3) 52 53 /* CNTR bits. */ 54 #define CNTR_TCEN (1<<5) 55 #define CNTR_PREST (1<<4) 56 #define CNTR_PDMD (1<<3) 57 #define CNTR_INTEN (1<<2) 58 #define CNTR_DDIR (1<<1) 59 #define CNTR_IO_DX (1<<0) 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 /* A3000_H */ 73