ncrreg.h

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/**************************************************************************
**
**  $Id: ncrreg.h,v 1.12 1998/09/15 10:06:23 gibbs Exp $
**
**  Device driver for the   NCR 53C810   PCI-SCSI-Controller.
**
**  386bsd / FreeBSD / NetBSD
**
**-------------------------------------------------------------------------
**
**  Written for 386bsd and FreeBSD by
**	[e-mail]		Wolfgang Stanglmeier
**	[e-mail]	Stefan Esser
**
**  Ported to NetBSD by
**	[e-mail]
**
**-------------------------------------------------------------------------
**
** Copyright (c) 1994 Wolfgang Stanglmeier.  All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
** 1. Redistributions of source code must retain the above copyright
**    notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
**    notice, this list of conditions and the following disclaimer in the
**    documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
**    derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**
***************************************************************************
*/

#ifndef __NCR_REG_H__
#define __NCR_REG_H__

/*-----------------------------------------------------------------
**
**	The ncr 53c810 register structure.
**
**-----------------------------------------------------------------
*/

struct ncr_reg {
/*00*/  u_char    nc_scntl0;    /* full arb., ena parity, par->ATN  */

/*01*/  u_char    nc_scntl1;    /* no reset                         */
        #define   ISCON   0x10  /* connected to scsi		    */
        #define   CRST    0x08  /* force reset                      */

/*02*/  u_char    nc_scntl2;    /* no disconnect expected           */
	#define   SDU     0x80  /* cmd: disconnect will raise error */
	#define   CHM     0x40  /* sta: chained mode                */
	#define   WSS     0x08  /* sta: wide scsi send           [W]*/
	#define   WSR     0x01  /* sta: wide scsi received       [W]*/

/*03*/  u_char    nc_scntl3;    /* cnf system clock dependent       */
	#define   EWS     0x08  /* cmd: enable wide scsi         [W]*/

/*04*/  u_char    nc_scid;	/* cnf host adapter scsi address    */
	#define   RRE     0x40  /* r/w:e enable response to resel.  */
	#define   SRE     0x20  /* r/w:e enable response to select  */

/*05*/  u_char    nc_sxfer;	/* ### Sync speed and count         */

/*06*/  u_char    nc_sdid;	/* ### Destination-ID               */

/*07*/  u_char    nc_gpreg;	/* ??? IO-Pins                      */

/*08*/  u_char    nc_sfbr;	/* ### First byte in phase          */

/*09*/  u_char    nc_socl;
	#define   CREQ	  0x80	/* r/w: SCSI-REQ                    */
	#define   CACK	  0x40	/* r/w: SCSI-ACK                    */
	#define   CBSY	  0x20	/* r/w: SCSI-BSY                    */
	#define   CSEL	  0x10	/* r/w: SCSI-SEL                    */
	#define   CATN	  0x08	/* r/w: SCSI-ATN                    */
	#define   CMSG	  0x04	/* r/w: SCSI-MSG                    */
	#define   CC_D	  0x02	/* r/w: SCSI-C_D                    */
	#define   CI_O	  0x01	/* r/w: SCSI-I_O                    */

/*0a*/  u_char    nc_ssid;

/*0b*/  u_char    nc_sbcl;

/*0c*/  u_char    nc_dstat;
        #define   DFE     0x80  /* sta: dma fifo empty              */
        #define   MDPE    0x40  /* int: master data parity error    */
        #define   BF      0x20  /* int: script: bus fault           */
        #define   ABRT    0x10  /* int: script: command aborted     */
        #define   SSI     0x08  /* int: script: single step         */
        #define   SIR     0x04  /* int: script: interrupt instruct. */
        #define   IID     0x01  /* int: script: illegal instruct.   */

/*0d*/  u_char    nc_sstat0;
        #define   ILF     0x80  /* sta: data in SIDL register lsb   */
        #define   ORF     0x40  /* sta: data in SODR register lsb   */
        #define   OLF     0x20  /* sta: data in SODL register lsb   */
        #define   AIP     0x10  /* sta: arbitration in progress     */
        #define   LOA     0x08  /* sta: arbitration lost            */
        #define   WOA     0x04  /* sta: arbitration won             */
        #define   IRST    0x02  /* sta: scsi reset signal           */
        #define   SDP     0x01  /* sta: scsi parity signal          */

/*0e*/  u_char    nc_sstat1;
	#define   FF3210  0xf0	/* sta: bytes in the scsi fifo      */

/*0f*/  u_char    nc_sstat2;
        #define   ILF1    0x80  /* sta: data in SIDL register msb[W]*/
        #define   ORF1    0x40  /* sta: data in SODR register msb[W]*/
        #define   OLF1    0x20  /* sta: data in SODL register msb[W]*/
        #define   LDSC    0x02  /* sta: disconnect & reconnect      */

/*10*/  u_int32_t nc_dsa;	/* --> Base page                    */

/*14*/  u_char    nc_istat;	/* --> Main Command and status      */
        #define   CABRT   0x80  /* cmd: abort current operation     */
        #define   SRST    0x40  /* mod: reset chip                  */
        #define   SIGP    0x20  /* r/w: message from host to ncr    */
        #define   SEM     0x10  /* r/w: message between host + ncr  */
        #define   CON     0x08  /* sta: connected to scsi           */
        #define   INTF    0x04  /* sta: int on the fly (reset by wr)*/
        #define   SIP     0x02  /* sta: scsi-interrupt              */
        #define   DIP     0x01  /* sta: host/script interrupt       */

/*15*/  u_char    nc_15_;
/*16*/	u_char	  nc_16_;
/*17*/  u_char    nc_17_;

/*18*/	u_char	  nc_ctest0;
/*19*/  u_char    nc_ctest1;

/*1a*/  u_char    nc_ctest2;
	#define   CSIGP   0x40

/*1b*/  u_char    nc_ctest3;
        #define   FLF     0x08  /* cmd: flush dma fifo              */
        #define   CLF	  0x04	/* cmd: clear dma fifo		    */
        #define   FM      0x02  /* mod: fetch pin mode              */
        #define   WRIE    0x01  /* mod: write and invalidate enable */

/*1c*/  u_int32_t nc_temp;	/* ### Temporary stack              */

/*20*/	u_char	  nc_dfifo;
/*21*/  u_char    nc_ctest4;
        #define   BDIS    0x80  /* mod: burst disable               */
        #define   MPEE    0x08  /* mod: master parity error enable  */

/*22*/  u_char    nc_ctest5;
	#define   DFS     0x20  /* mod: dma fifo size               */
/*23*/  u_char    nc_ctest6;

/*24*/  u_int32_t nc_dbc;	/* ### Byte count and command       */
/*28*/  u_int32_t nc_dnad;	/* ### Next command register        */
/*2c*/  u_int32_t nc_dsp;	/* --> Script Pointer               */
/*30*/  u_int32_t nc_dsps;	/* --> Script pointer save/opcode#2 */
/*34*/  u_int32_t nc_scratcha;  /* ??? Temporary register a         */

/*38*/  u_char    nc_dmode;
        #define   BL_2    0x80  /* mod: burst length shift value +2 */
        #define   BL_1    0x40  /* mod: burst length shift value +1 */
        #define   ERL     0x08  /* mod: enable read line            */
        #define   ERMP    0x04  /* mod: enable read multiple        */
        #define   BOF     0x02  /* mod: burst op code fetch         */

/*39*/  u_char    nc_dien;
/*3a*/  u_char    nc_dwt;

/*3b*/  u_char    nc_dcntl;	/* --> Script execution control     */
        #define   CLSE    0x80  /* mod: cache line size enable      */
        #define   PFF     0x40  /* cmd: pre-fetch flush             */
        #define   PFEN    0x20  /* mod: pre-fetch enable            */
        #define   SSM     0x10  /* mod: single step mode            */
        #define   IRQM    0x08  /* mod: irq mode (1 = totem pole !) */
        #define   STD     0x04  /* cmd: start dma mode              */
        #define   IRQD    0x02  /* mod: irq disable                 */
	#define	  NOCOM   0x01	/* cmd: protect sfbr while reselect */

/*3c*/  u_int32_t nc_adder;

/*40*/  u_short   nc_sien;	/* -->: interrupt enable            */
/*42*/  u_short   nc_sist;	/* <--: interrupt status            */
        #define   STO     0x0400/* sta: timeout (select)            */
        #define   GEN     0x0200/* sta: timeout (general)           */
        #define   HTH     0x0100/* sta: timeout (handshake)         */
        #define   MA      0x80  /* sta: phase mismatch              */
        #define   CMP     0x40  /* sta: arbitration complete        */
        #define   SEL     0x20  /* sta: selected by another device  */
        #define   RSL     0x10  /* sta: reselected by another device*/
        #define   SGE     0x08  /* sta: gross error (over/underflow)*/
        #define   UDC     0x04  /* sta: unexpected disconnect       */
        #define   RST     0x02  /* sta: scsi bus reset detected     */
        #define   PAR     0x01  /* sta: scsi parity error           */

/*44*/  u_char    nc_slpar;
/*45*/  u_char    nc_swide;
/*46*/  u_char    nc_macntl;
/*47*/  u_char    nc_gpcntl;
/*48*/  u_char    nc_stime0;    /* cmd: timeout for select&handshake*/
/*49*/  u_char    nc_stime1;    /* cmd: timeout user defined        */
/*4a*/  u_short   nc_respid;    /* sta: Reselect-IDs                */

/*4c*/  u_char    nc_stest0;

/*4d*/  u_char    nc_stest1;
	#define   DBLEN   0x08	/* clock doubler running		*/
	#define   DBLSEL  0x04	/* clock doubler selected		*/

/*4e*/  u_char    nc_stest2;
	#define   ROF     0x40	/* reset scsi offset (after gross error!) */
	#define   EXT     0x02  /* extended filtering                     */

/*4f*/  u_char    nc_stest3;
	#define   TE     0x80	/* c: tolerAnt enable */
	#define   HSC    0x20	/* c: Halt SCSI Clock */
	#define   CSF    0x02	/* c: clear scsi fifo */

/*50*/  u_short   nc_sidl;	/* Lowlevel: latched from scsi data */
/*52*/  u_char    nc_stest4;
	#define   SMODE  0xc0	/* SCSI bus mode      (895/6 only) */
	#define    SMODE_HVD 0x40	/* High Voltage Differential       */
	#define    SMODE_SE  0x80	/* Single Ended                    */
	#define    SMODE_LVD 0xc0	/* Low Voltage Differential        */
	#define   LCKFRQ 0x20	/* Frequency Lock (895/6 only)     */

/*53*/  u_char    nc_53_;
/*54*/  u_short   nc_sodl;	/* Lowlevel: data out to scsi data  */
/*56*/  u_short   nc_56_;
/*58*/  u_short   nc_sbdl;	/* Lowlevel: data from scsi data    */
/*5a*/  u_short   nc_5a_;
/*5c*/  u_char    nc_scr0;	/* Working register B               */
/*5d*/  u_char    nc_scr1;	/*                                  */
/*5e*/  u_char    nc_scr2;	/*                                  */
/*5f*/  u_char    nc_scr3;	/*                                  */
/*60*/
};

/*-----------------------------------------------------------
**
**	Utility macros for the script.
**
**-----------------------------------------------------------
*/

#define REGJ(p,r) (offsetof(struct ncr_reg, p ## r))
#define REG(r) REGJ (nc_, r)

#ifndef TARGET_MODE
#define TARGET_MODE 0
#endif

typedef u_int32_t ncrcmd;

/*-----------------------------------------------------------
**
**	SCSI phases
**
**-----------------------------------------------------------
*/

#define	SCR_DATA_OUT	0x00000000
#define	SCR_DATA_IN	0x01000000
#define	SCR_COMMAND	0x02000000
#define	SCR_STATUS	0x03000000
#define SCR_ILG_OUT	0x04000000
#define SCR_ILG_IN	0x05000000
#define SCR_MSG_OUT	0x06000000
#define SCR_MSG_IN      0x07000000

/*-----------------------------------------------------------
**
**	Data transfer via SCSI.
**
**-----------------------------------------------------------