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 */ 73