/* *	seagate.h Copyright (C) 1992 Drew Eckhardt  *	low level scsi driver header for ST01/ST02 by *		Drew Eckhardt  * *	<drew@colorado.edu> */#ifndef _SEAGATE_H	#define SEAGATE_H/*	$Header*/#ifndef ASMint seagate_st0x_detect(int);int seagate_st0x_command(Scsi_Cmnd *);int seagate_st0x_queue_command(Scsi_Cmnd *, void (*done)(Scsi_Cmnd *));int seagate_st0x_abort(Scsi_Cmnd *, int);const char *seagate_st0x_info(void);int seagate_st0x_reset(void); #ifndef NULL	#define NULL 0#endif#define SEAGATE_ST0X  {"Seagate ST-01/ST-02", seagate_st0x_detect, 	\			 seagate_st0x_info, seagate_st0x_command,  	\			 seagate_st0x_queue_command, seagate_st0x_abort, \			 seagate_st0x_reset, NULL, NULL,		\			 1, 7, SG_NONE, 1, 0, 0}#endif/*	defining PARITY causes parity data to be checked*/#define PARITY/*	defining ARBITRATE causes the arbitration sequence to be used.  And speed to drop by a 	factor of ten.*/#undef ARBITRATE/*	Thanks to Brian Antoine for the example code in his Messy-Loss ST-01		driver, and Mitsugu Suzuki for information on the ST-01		SCSI host.*//*	CONTROL defines*/#define CMD_RST 		0x01#define CMD_SEL 		0x02#define CMD_BSY 		0x04#define CMD_ATTN    		0x08#define CMD_START_ARB		0x10#define CMD_EN_PARITY		0x20#define CMD_INTR		0x40#define CMD_DRVR_ENABLE		0x80/*	STATUS*/#define STAT_BSY		0x01#define STAT_MSG		0x02#define STAT_IO			0x04#define STAT_CD			0x08#define STAT_REQ		0x10#define STAT_SEL		0x20#define STAT_PARITY		0x40#define STAT_ARB_CMPL		0x80/* 	REQUESTS*/#define REQ_MASK (STAT_CD |  STAT_IO | STAT_MSG)#define REQ_DATAOUT 0#define REQ_DATAIN STAT_IO#define REQ_CMDOUT STAT_CD#define REQ_STATIN (STAT_CD | STAT_IO)#define REQ_MSGOUT (STAT_MSG | STAT_CD)#define REQ_MSGIN (STAT_MSG | STAT_CD | STAT_IO)extern volatile int seagate_st0x_timeout;#ifdef PARITY	#define BASE_CMD CMD_EN_PARITY#else	#define BASE_CMD  0#endif/*	Debugging code*/#define PHASE_BUS_FREE 1#define PHASE_ARBITRATION 2#define PHASE_SELECTION 4#define PHASE_DATAIN 8 #define PHASE_DATAOUT 0x10#define PHASE_CMDOUT 0x20#define PHASE_MSGIN 0x40#define PHASE_MSGOUT 0x80#define PHASE_STATUSIN 0x100#define PHASE_ETC (PHASE_DATAIN | PHASE_DATA_OUT | PHASE_CMDOUT | PHASE_MSGIN | PHASE_MSGOUT | PHASE_STATUSIN)#define PRINT_COMMAND 0x200#define PHASE_EXIT 0x400#define PHASE_RESELECT 0x800/*  *	Control options - these are timeouts specified in .01 seconds. */#define ST0X_BUS_FREE_DELAY 25#define ST0X_SELECTION_DELAY 3#define eoi() __asm__("push %%eax\nmovb $0x20, %%al\noutb %%al, $0x20\npop %%eax"::)	#endif