#ifndef _WD7000_H/* $Id: $ * * Header file for the WD-7000 driver for Linux * * $Log: $ * Revision 1.1  1992/07/24  06:27:38  root * Initial revision * * Revision 1.1  1992/07/05  08:32:32  root * Initial revision * * Revision 1.1  1992/05/15  18:38:05  root * Initial revision * * Revision 1.1  1992/04/02  03:23:13  drew * Initial revision * * Revision 1.3  1992/01/27  14:46:29  tthorn * *** empty log message *** * */#include <linux/types.h>#undef STATMASK#undef CONTROL#define IO_BASE 	0x350#define IRQ_LVL 	15#define DMA_CH  	6#define OGMB_CNT	8#define ICMB_CNT	16/* I/O Port interface 4.2 *//* READ */#define ASC_STAT IO_BASE#define INT_IM	0x80		/* Interrupt Image Flag */#define CMD_RDY	0x40		/* Command Port Ready */#define CMD_REJ	0x20		/* Command Port Byte Rejected */#define ASC_INI	0x10		/* ASC Initialized Flag */#define STATMASK 0xf0		/* The lower 4 Bytes are reserved *//* This register serves two purposes * Diagnostics error code * Interrupt Status */#define INTR_STAT ASC_STAT+1#define ANYINTR	0x80		/* Mailbox Service possible/required */#define IMB	0x40		/* 1 Incoming / 0 Outgoing */#define MBMASK 0x3f/* if MSb is zero, the lower bits are diagnostic status * * Diagnostics: * 01	No diagnostic error occurred * 02	RAM failure * 03	FIFO R/W failed * 04   SBIC register read/write failed * 05   Initialization D-FF failed * 06   Host IRQ D-FF failed * 07   ROM checksum error * Interrupt status (bitwise): * 10NNNNNN   outgoing mailbox NNNNNN is free * 11NNNNNN   incoming mailbox NNNNNN needs service *//* WRITE */#define COMMAND ASC_STAT/* *  COMMAND opcodes */#define NO_OP             0#define INITIALIZATION    1     /* initialization after reset (10 bytes) */#define DISABLE_UNS_INTR  2     /* disable unsolicited interrupts */#define ENABLE_UNS_INTR   3     /* enable unsolicited interrupts */#define INTR_ON_FREE_OGMB 4     /* interrupt on free OGMB */#define SCSI_SOFT_RESET   5     /* SCSI soft reset */#define SCSI_HARD_RESET   6     /* SCSI hard reset acknowledge */#define START_OGMB        0x80  /* start command in OGMB (n) */#define SCAN_OGMBS        0xc0  /* start multiple commands, signature (n) */                                /*    where (n) = lower 6 bits *//* *  For INITIALIZATION: */#define BUS_ON            48    /* x 125ns, 48 = 6000ns, BIOS uses 8000ns */#define BUS_OFF           24    /* x 125ns, 24 = 3000ns, BIOS uses 1875ns */ #define INTR_ACK ASC_STAT+1#define CONTROL ASC_STAT+2#define INT_EN	0x08		/* Interrupt Enable	*/#define DMA_EN	0x04		/* DMA Enable		*/#define SCSI_RES	0x02	/* SCSI Reset		*/#define ASC_RES	0x01		/* ASC Reset		*//* Mailbox Definition */struct wd_mailbox{	unchar status;	unchar scbptr[3];};/* These belong in scsi.h also */#undef any2scsi#define any2scsi(up, p)			\(up)[0] = (((long)(p)) >> 16);	\(up)[1] = ((long)(p)) >> 8;		\(up)[2] = ((long)(p));#define scsi2int(up) ( (((long)*(up)) << 16) + (((long)(up)[1]) << 8) + ((long)(up)[2]) )#define xany2scsi(up, p)	\(up)[0] = ((long)(p)) >> 24;	\(up)[1] = ((long)(p)) >> 16;	\(up)[2] = ((long)(p)) >> 8;	\(up)[3] = ((long)(p));#define xscsi2int(up) ( (((long)(up)[0]) << 24) + (((long)(up)[1]) << 16) \		      + (((long)(up)[2]) <<  8) +  ((long)(up)[3]) )#define MAX_CDB 12#define MAX_SENSE 14typedef struct scb {		/* Command Control Block 5.4.1 */  unchar op;			/* Command Control Block Operation Code */  unchar idlun;			/* op=0,2:Target Id, op=1:Initiator Id */				/* Outbound data transfer, length is checked*/				/* Inbound data transfer, length is checked */				/* Logical Unit Number */  unchar cdb[12];		/* SCSI Command Block */  unchar status;		/* SCSI Return Status */  unchar vue;			/* Vendor Unique Error Code */  unchar maxlen[3];		/* Maximum Data Transfer Length */  unchar dataptr[3];		/* SCSI Data Block Pointer */  unchar linkptr[3];		/* Next Command Link Pointer */  unchar direc;			/* Transfer Direction */  unchar reserved2[6];		/* SCSI Command Descriptor Block */                                /* end of hardware SCB */  Scsi_Cmnd *SCpnt;             /* Scsi_Cmnd using this SCB */  struct scb *next;             /* for lists of scbs */} Scb;/* *  WD7000-specific scatter/gather element structure */typedef struct sgb {    unchar len[3];    unchar ptr[3];} Sgb;/* *  Note:  MAX_SCBS _must_ be defined large enough to keep ahead of the *  demand for SCBs, which will be at most WD7000_Q * WD7000_SG.  1 is *  added to each because they can be 0. */#define MAX_SCBS  ((WD7000_Q+1) * (WD7000_SG+1))/* *  The driver is written to allow host-only commands to be executed.  These *  use a 16-byte block called an ICB. * *  (Currently, only wd7000_info uses this, to get the firmware rev. level.) */#define ICB_STATUS  16          /* set to icmb status by wd7000_intr_handle */#define ICB_PHASE   17          /* set to 0 by wd7000_intr_handle */#define ICB_LEN     18          /* actually 16; this includes the above */int wd7000_detect(int);int wd7000_command(Scsi_Cmnd *);int wd7000_queuecommand(Scsi_Cmnd *, void (*done)(Scsi_Cmnd *));int wd7000_abort(Scsi_Cmnd *, int);const char *wd7000_info(void);int wd7000_reset(Scsi_Cmnd *);int wd7000_biosparam(int, int, int*);#ifndef NULL	#define NULL 0#endif/* *  Define WD7000_SG to be the number of Sgbs that will fit in a block of *  size WD7000_SCRIBBLE.  WD7000_SCRIBBLE must be 512, 1024, 2048, or 4096. * *  The sg_tablesize value will default to SG_NONE for older boards (before *  rev 7.0), but will be changed to WD7000_SG when a newer board is *  detected. */#define WD7000_SCRIBBLE  512#define WD7000_Q    OGMB_CNT#define WD7000_SG   (WD7000_SCRIBBLE / sizeof(Sgb))#define WD7000 {\	"Western Digital WD-7000",      \	wd7000_detect,                  \	wd7000_info, wd7000_command,	\	wd7000_queuecommand,	        \	wd7000_abort,			\	wd7000_reset,			\	NULL,                           \	wd7000_biosparam,               \	WD7000_Q, 7, SG_NONE, 1, 0, 1}#endif