Import of Linux/MIPS 2.1.14

1 files changed, 929 insertions, 0 deletions

diff --git a/drivers/scsi/ncr53c8xx.h b/drivers/scsi/ncr53c8xx.h
new file mode 100644
index 000000000..bad845ed0
--- /dev/null
+++ b/drivers/scsi/ncr53c8xx.h
@@ -0,0 +1,929 @@
+/******************************************************************************
+**  Device driver for the PCI-SCSI NCR538XX controller family.
+**
+**  Copyright (C) 1994  Wolfgang Stanglmeier
+**
+**  This program is free software; you can redistribute it and/or modify
+**  it under the terms of the GNU General Public License as published by
+**  the Free Software Foundation; either version 2 of the License, or
+**  (at your option) any later version.
+**
+**  This program is distributed in the hope that it will be useful,
+**  but WITHOUT ANY WARRANTY; without even the implied warranty of
+**  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+**  GNU General Public License for more details.
+**
+**  You should have received a copy of the GNU General Public License
+**  along with this program; if not, write to the Free Software
+**  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+**
+**-----------------------------------------------------------------------------
+**
+**  This driver has been ported to Linux from the FreeBSD NCR53C8XX driver
+**  and is currently maintained by
+**
+**          Gerard Roudier              <groudier@club-internet.fr>
+**
+**  Being given that this driver originates from the FreeBSD version, and
+**  in order to keep synergy on both, any suggested enhancements and corrections
+**  received on Linux are automatically a potential candidate for the FreeBSD 
+**  version.
+**
+**  The original driver has been written for 386bsd and FreeBSD by
+**          Wolfgang Stanglmeier        <wolf@cologne.de>
+**          Stefan Esser                <se@mi.Uni-Koeln.de>
+**
+**  And has been ported to NetBSD by
+**          Charles M. Hannum           <mycroft@gnu.ai.mit.edu>
+**
+*******************************************************************************
+*/
+
+#ifndef NCR53C8XX_H
+#define NCR53C8XX_H
+
+/*
+**	Name and revision of the driver
+*/
+#define SCSI_NCR_DRIVER_NAME		"ncr53c8xx - revision 1.14c"
+ 
+/*
+**	If SCSI_NCR_SPECIAL_FEATURES is defined,
+**	the driver enables or not the following features according to chip id 
+**	revision id:
+**	DMODE   0xce
+**		0x02	burst op-code fetch
+**		0x04	enable read multiple
+**		0x08	enable read line
+**		0xc0	burst length 16/8/2
+**	DCNTL   0xa0
+**		0x20	enable pre-fetch
+**		0x80	enable cache line size
+**	CTEST3  0x01
+**		0x01	set write and invalidate
+**	CTEST4  0x80
+**		0x80	burst disabled
+**
+**	If SCSI_NCR_TRUST_BIOS_SETTING is defined, the driver will use the 
+**	initial value of corresponding bit fields, assuming they have been 
+**	set by the SDMS BIOS.
+**	When Linux is booted from another O/S, these assertion is false and 
+**	the driver will not be able to guess it. 
+*/
+
+#if 0
+#define SCSI_NCR_TRUST_BIOS_SETTING
+#endif
+
+#if 0
+#define SCSI_NCR_SPECIAL_FEATURES
+#endif
+
+/*********** LINUX SPECIFIC SECTION ******************/
+
+/*
+**	Check supported Linux versions
+*/
+
+#if !defined(LINUX_VERSION_CODE)
+#include <linux/version.h>
+#endif
+#include <linux/config.h>
+
+/*
+**	During make dep of linux-1.2.13, LINUX_VERSION_CODE is undefined
+**	Under linux-1.3.X, all seems to be OK.
+**	So, we have only to define it under 1.2.13
+*/
+
+#define LinuxVersionCode(v, p, s) (((v)<<16)+((p)<<8)+(s))
+
+#if !defined(LINUX_VERSION_CODE)
+#define LINUX_VERSION_CODE LinuxVersionCode(1,2,13)
+#endif
+
+#if !defined(VERSION)
+#define VERSION		((LINUX_VERSION_CODE >> 16) & 0xff)
+#define PATCHLEVEL	((LINUX_VERSION_CODE >> 8)  & 0xff)
+#define SUBLEVEL	((LINUX_VERSION_CODE >> 0)  & 0xff)
+#endif
+
+#if	VERSION == 0 || VERSION > 3
+#	error Only Linux version 1 and probable 2 or 3 supported.
+#endif
+
+#if	VERSION == 1 && PATCHLEVEL == 2
+#	if	SUBLEVEL != 13
+#		error Only sublevel 13 of Linux 1.2 is supported.
+#	endif
+#endif
+
+#if	VERSION == 1 && PATCHLEVEL == 3
+#	if	SUBLEVEL < 45
+#		error Only sublevels >=45 of Linux 1.3 are supported.
+#	endif
+#endif
+
+/*
+**	Normal IO or memory mapped IO.
+**
+**	Memory mapped IO only works with linux-1.3.X
+**	If your motherboard does not work with memory mapped IO,
+**	define SCSI_NCR_IOMAPPED for PATCHLEVEL 3 too.
+*/
+
+#if	LINUX_VERSION_CODE < LinuxVersionCode(1,3,0)
+#	define	SCSI_NCR_IOMAPPED
+#endif
+
+#if	LINUX_VERSION_CODE >= LinuxVersionCode(1,3,0)
+#	define	SCSI_NCR_PROC_INFO_SUPPORT
+#endif
+
+#if	LINUX_VERSION_CODE >= LinuxVersionCode(1,3,72)
+#	define SCSI_NCR_SHARE_IRQ
+#endif
+
+/*
+**	Avoid to change these constants, unless you know what you are doing.
+*/
+
+#ifdef	CONFIG_SCSI_NCR53C8XX_MAX_TAGS
+#if	CONFIG_SCSI_NCR53C8XX_MAX_TAGS < 2
+#define SCSI_NCR_MAX_TAGS	(2)
+#elif	CONFIG_SCSI_NCR53C8XX_MAX_TAGS > 12
+#define SCSI_NCR_MAX_TAGS	(12)
+#else
+#define	SCSI_NCR_MAX_TAGS	CONFIG_SCSI_NCR53C8XX_MAX_TAGS
+#endif
+#else
+#define SCSI_NCR_MAX_TAGS	(4)
+#endif
+
+#define SCSI_NCR_ALWAYS_SIMPLE_TAG
+
+#ifdef CONFIG_SCSI_NCR53C8XX_TAGGED_QUEUE
+#define SCSI_NCR_DEFAULT_TAGS	SCSI_NCR_MAX_TAGS
+#else
+#define SCSI_NCR_DEFAULT_TAGS	(0)
+#endif
+
+#ifdef CONFIG_SCSI_NCR53C8XX_IOMAPPED
+#define	SCSI_NCR_IOMAPPED
+#endif
+
+#ifdef	CONFIG_SCSI_NCR53C8XX_SYNC
+#if	CONFIG_SCSI_NCR53C8XX_SYNC == 0
+#define	SCSI_NCR_DEFAULT_SYNC	(0)
+#elif	CONFIG_SCSI_NCR53C8XX_SYNC < 5
+#define	SCSI_NCR_DEFAULT_SYNC	(5000)
+#elif	CONFIG_SCSI_NCR53C8XX_SYNC > 10
+#define	SCSI_NCR_DEFAULT_SYNC	(10000)
+#else
+#define	SCSI_NCR_DEFAULT_SYNC	(CONFIG_SCSI_NCR53C8XX_SYNC * 1000)
+#endif
+#else
+#define	SCSI_NCR_DEFAULT_SYNC	(10000)
+#endif
+
+#ifdef	CONFIG_SCSI_FORCE_ASYNCHRONOUS
+#undef	SCSI_NCR_DEFAULT_SYNC
+#define SCSI_NCR_DEFAULT_SYNC	(0)
+#endif
+
+#ifdef CONFIG_SCSI_NCR53C8XX_NO_DISCONNECT
+#define SCSI_NCR_NO_DISCONNECT
+#endif
+
+#ifdef CONFIG_SCSI_NCR53C8XX_FORCE_SYNC_NEGO
+#define SCSI_NCR_FORCE_SYNC_NEGO
+#endif
+
+#ifdef CONFIG_SCSI_NCR53C8XX_DISABLE_MPARITY_CHECK
+#define SCSI_NCR_DISABLE_MPARITY_CHECK
+#endif
+
+#ifdef CONFIG_SCSI_NCR53C8XX_DISABLE_PARITY_CHECK
+#define SCSI_NCR_DISABLE_PARITY_CHECK
+#endif
+
+#if 0
+#define SCSI_NCR_SEGMENT_SIZE	(512)
+#endif
+
+#define SCSI_NCR_MAX_SCATTER	(128)
+#define SCSI_NCR_MAX_TARGET	(16)
+#define SCSI_NCR_MAX_HOST	(2)
+#define SCSI_NCR_SETTLE_TIME	(2)
+#define SCSI_NCR_TIMEOUT_ALERT	(3*HZ)
+
+#define SCSI_NCR_CAN_QUEUE	(7*SCSI_NCR_MAX_TAGS)
+#define SCSI_NCR_CMD_PER_LUN	(SCSI_NCR_MAX_TAGS)
+#define SCSI_NCR_SG_TABLESIZE	(SCSI_NCR_MAX_SCATTER-1)
+
+#if 1 /* defined CONFIG_SCSI_MULTI_LUN */
+#define SCSI_NCR_MAX_LUN	(8)
+#else
+#define SCSI_NCR_MAX_LUN	(1)
+#endif
+
+#define SCSI_NCR_TIMER_INTERVAL	((HZ+5-1)/5)
+
+/*
+**	Define Scsi_Host_Template parameters
+**
+**	Used by hosts.c and ncr53c8xx.c with module configuration.
+*/
+
+#if defined(HOSTS_C) || defined(MODULE)
+
+#if	LINUX_VERSION_CODE >= LinuxVersionCode(1,3,98)
+#include <scsi/scsicam.h>
+#else
+#include <linux/scsicam.h>
+#endif
+
+int ncr53c8xx_abort(Scsi_Cmnd *);
+int ncr53c8xx_detect(Scsi_Host_Template *tpnt);
+int ncr53c8xx_queue_command(Scsi_Cmnd *, void (*done)(Scsi_Cmnd *));
+
+#if	LINUX_VERSION_CODE >= LinuxVersionCode(1,3,98)
+int ncr53c8xx_reset(Scsi_Cmnd *, unsigned int);
+#else
+int ncr53c8xx_reset(Scsi_Cmnd *);
+#endif
+
+#ifdef MODULE
+int ncr53c8xx_release(struct Scsi_Host *);
+#else
+#define ncr53c8xx_release NULL
+#endif
+
+#if	LINUX_VERSION_CODE >= LinuxVersionCode(1,3,0)
+
+#define NCR53C8XX {NULL,NULL,NULL,NULL,SCSI_NCR_DRIVER_NAME, ncr53c8xx_detect,\
+    	ncr53c8xx_release, /* info */ NULL, /* command, deprecated */ NULL, 		\
+	ncr53c8xx_queue_command, ncr53c8xx_abort, ncr53c8xx_reset,	\
+        NULL /* slave attach */, scsicam_bios_param, /* can queue */ SCSI_NCR_CAN_QUEUE,\
+	/* id */ 7, SCSI_NCR_SG_TABLESIZE /* SG */, /* cmd per lun */ SCSI_NCR_CMD_PER_LUN, 		\
+        /* present */ 0, /* unchecked isa dma */ 0, DISABLE_CLUSTERING} 
+
+
+#else
+
+
+#define NCR53C8XX {NULL, NULL, SCSI_NCR_DRIVER_NAME, ncr53c8xx_detect,\
+    	ncr53c8xx_release, /* info */ NULL, /* command, deprecated */ NULL, 		\
+	ncr53c8xx_queue_command, ncr53c8xx_abort, ncr53c8xx_reset,	\
+        NULL /* slave attach */, scsicam_bios_param, /* can queue */ SCSI_NCR_CAN_QUEUE,\
+	/* id */ 7, SCSI_NCR_SG_TABLESIZE /* SG */, /* cmd per lun */ SCSI_NCR_CMD_PER_LUN, 		\
+        /* present */ 0, /* unchecked isa dma */ 0, DISABLE_CLUSTERING} 
+
+#endif /* LINUX_VERSION_CODE >= LinuxVersionCode(1,3,0) */
+
+#endif /* defined(HOSTS_C) || defined(MODULE) */ 
+
+
+#ifndef HOSTS_C
+
+/*
+**	Define the table of target capabilities by host and target
+**
+**	If you have problems with a scsi device, note the host unit and the
+**	corresponding target number.
+**
+**	Edit the corresponding entry of the table below and try successively:
+**		NQ7_Questionnable
+**		NQ7_IdeLike
+**
+**	This bitmap is anded with the byte 7 of inquiry data on completion of
+**	INQUIRY command.
+**	The driver never see the zeroed bits and will ignore the corresponding
+**	capabilities of the target.
+*/
+
+#define INQ7_SftRe	1
+#define INQ7_CmdQueue	(1<<1)		/* Tagged Command */
+#define INQ7_Reserved	(1<<2)
+#define INQ7_Linked	(1<<3)
+#define INQ7_Sync	(1<<4)		/* Synchronous Negotiation */
+#define INQ7_WBus16	(1<<5)
+#define INQ7_WBus32	(1<<6)
+#define INQ7_RelAdr	(1<<7)
+
+#define INQ7_IdeLike		0
+#define INQ7_Scsi1Like		INQ7_IdeLike
+#define INQ7_Perfect		0xff
+#define INQ7_Questionnable	~(INQ7_CmdQueue|INQ7_Sync)
+#define INQ7_VeryQuestionnable	\
+			~(INQ7_CmdQueue|INQ7_Sync|INQ7_WBus16|INQ7_WBus32)
+
+#define INQ7_Default		INQ7_Perfect
+
+#define NCR53C8XX_TARGET_CAPABILITIES					\
+/* Host 0 */								\
+{									\
+	{								\
+	/* Target  0 */		INQ7_Default,				\
+	/* Target  1 */		INQ7_Default,				\
+	/* Target  2 */		INQ7_Default,				\
+	/* Target  3 */		INQ7_Default,				\
+	/* Target  4 */		INQ7_Default,				\
+	/* Target  5 */		INQ7_Default,				\
+	/* Target  6 */		INQ7_Default,				\
+	/* Target  7 */		INQ7_Default,				\
+	/* Target  8 */		INQ7_Default,				\
+	/* Target  9 */		INQ7_Default,				\
+	/* Target 10 */		INQ7_Default,				\
+	/* Target 11 */		INQ7_Default,				\
+	/* Target 12 */		INQ7_Default,				\
+	/* Target 13 */		INQ7_Default,				\
+	/* Target 14 */		INQ7_Default,				\
+	/* Target 15 */		INQ7_Default,				\
+	}								\
+},									\
+/* Host 1 */								\
+{									\
+	{								\
+	/* Target  0 */		INQ7_Default,				\
+	/* Target  1 */		INQ7_Default,				\
+	/* Target  2 */		INQ7_Default,				\
+	/* Target  3 */		INQ7_Default,				\
+	/* Target  4 */		INQ7_Default,				\
+	/* Target  5 */		INQ7_Default,				\
+	/* Target  6 */		INQ7_Default,				\
+	/* Target  7 */		INQ7_Default,				\
+	/* Target  8 */		INQ7_Default,				\
+	/* Target  9 */		INQ7_Default,				\
+	/* Target 10 */		INQ7_Default,				\
+	/* Target 11 */		INQ7_Default,				\
+	/* Target 12 */		INQ7_Default,				\
+	/* Target 13 */		INQ7_Default,				\
+	/* Target 14 */		INQ7_Default,				\
+	/* Target 15 */		INQ7_Default,				\
+	}								\
+}
+
+/*
+**	Replace the proc_dir_entry of the standard ncr driver.
+*/
+
+#if	LINUX_VERSION_CODE >= LinuxVersionCode(1,3,0)
+#if	defined(CONFIG_SCSI_NCR53C7xx) || !defined(CONFIG_SCSI_NCR53C8XX)
+#define PROC_SCSI_NCR53C8XX	PROC_SCSI_NCR53C7xx
+#endif
+#endif
+
+/*
+**	NCR53C8XX Device Ids
+*/
+
+#ifndef PCI_DEVICE_ID_NCR_53C810
+#define PCI_DEVICE_ID_NCR_53C810 1
+#endif
+
+#ifndef PCI_DEVICE_ID_NCR_53C810AP
+#define PCI_DEVICE_ID_NCR_53C810AP 5
+#endif
+
+#ifndef PCI_DEVICE_ID_NCR_53C815
+#define PCI_DEVICE_ID_NCR_53C815 4
+#endif
+
+#ifndef PCI_DEVICE_ID_NCR_53C820
+#define PCI_DEVICE_ID_NCR_53C820 2
+#endif
+
+#ifndef PCI_DEVICE_ID_NCR_53C825
+#define PCI_DEVICE_ID_NCR_53C825 3
+#endif
+
+#ifndef PCI_DEVICE_ID_NCR_53C860
+#define PCI_DEVICE_ID_NCR_53C860 6
+#endif
+
+#ifndef PCI_DEVICE_ID_NCR_53C875
+#define PCI_DEVICE_ID_NCR_53C875 0xf
+#endif
+
+#ifndef PCI_DEVICE_ID_NCR_53C885
+#define PCI_DEVICE_ID_NCR_53C885 0xd
+#endif
+
+#ifndef PCI_DEVICE_ID_NCR_53C895
+#define PCI_DEVICE_ID_NCR_53C895 0xc
+#endif
+
+#ifndef PCI_DEVICE_ID_NCR_53C896
+#define PCI_DEVICE_ID_NCR_53C896 0xb
+#endif
+
+/**************** ORIGINAL CONTENT of ncrreg.h from FreeBSD ******************/
+
+/*-----------------------------------------------------------------
+**
+**	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    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   CLF	  0x04	/* clear scsi fifo		    */
+
+/*1c*/  u_int32    nc_temp;	/* ### Temporary stack              */
+
+/*20*/	u_char	  nc_dfifo;
+/*21*/  u_char    nc_ctest4;
+/*22*/  u_char    nc_ctest5;
+/*23*/  u_char    nc_ctest6;
+
+/*24*/  u_int32    nc_dbc;	/* ### Byte count and command       */
+/*28*/  u_int32    nc_dnad;	/* ### Next command register        */
+/*2c*/  u_int32    nc_dsp;	/* --> Script Pointer               */
+/*30*/  u_int32    nc_dsps;	/* --> Script pointer save/opcode#2 */
+/*34*/  u_int32    nc_scratcha;  /* ??? Temporary register a         */
+
+/*38*/  u_char    nc_dmode;
+/*39*/  u_char    nc_dien;
+/*3a*/  u_char    nc_dwt;
+
+/*3b*/  u_char    nc_dcntl;	/* --> Script execution control     */
+        #define   SSM     0x10  /* mod: single step mode            */
+        #define   STD     0x04  /* cmd: start dma mode              */
+	#define	  NOCOM   0x01	/* cmd: protect sfbr while reselect */
+
+/*3c*/  u_int32    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   CSF    0x02	/* c: clear scsi fifo */
+
+/*50*/  u_short   nc_sidl;	/* Lowlevel: latched from scsi data */
+/*52*/  u_short   nc_52_;
+/*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 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.
+**
+**-----------------------------------------------------------
+**
+**	MOVE_ABS (LEN)
+**	<<start address>>
+**
+**	MOVE_IND (LEN)
+**	<<dnad_offset>>
+**
+**	MOVE_TBL
+**	<<dnad_offset>>
+**
+**-----------------------------------------------------------
+*/
+
+#define SCR_MOVE_ABS(l) ((0x08000000 ^ (TARGET_MODE << 1ul)) | (l))
+#define SCR_MOVE_IND(l) ((0x28000000 ^ (TARGET_MODE << 1ul)) | (l))
+#define SCR_MOVE_TBL     (0x18000000 ^ (TARGET_MODE << 1ul))
+
+struct scr_tblmove {
+        u_int32  size;
+        u_int32  addr;
+};
+
+/*-----------------------------------------------------------
+**
+**	Selection
+**
+**-----------------------------------------------------------
+**
+**	SEL_ABS | SCR_ID (0..7)     [ | REL_JMP]
+**	<<alternate_address>>
+**
+**	SEL_TBL | << dnad_offset>>  [ | REL_JMP]
+**	<<alternate_address>>
+**
+**-----------------------------------------------------------
+*/
+
+#define	SCR_SEL_ABS	0x40000000
+#define	SCR_SEL_ABS_ATN	0x41000000
+#define	SCR_SEL_TBL	0x42000000
+#define	SCR_SEL_TBL_ATN	0x43000000
+
+struct scr_tblsel {
+        u_char  sel_0;
+        u_char  sel_sxfer;
+        u_char  sel_id;
+        u_char  sel_scntl3;
+};
+
+#define SCR_JMP_REL     0x04000000
+#define SCR_ID(id)	(((u_int32)(id)) << 16)
+
+/*-----------------------------------------------------------
+**
+**	Waiting for Disconnect or Reselect
+**
+**-----------------------------------------------------------
+**
+**	WAIT_DISC
+**	dummy: <<alternate_address>>
+**
+**	WAIT_RESEL
+**	<<alternate_address>>
+**
+**-----------------------------------------------------------
+*/
+
+#define	SCR_WAIT_DISC	0x48000000
+#define SCR_WAIT_RESEL  0x50000000
+
+/*-----------------------------------------------------------
+**
+**	Bit Set / Reset
+**
+**-----------------------------------------------------------
+**
+**	SET (flags {|.. })
+**
+**	CLR (flags {|.. })
+**
+**-----------------------------------------------------------
+*/
+
+#define SCR_SET(f)     (0x58000000 | (f))
+#define SCR_CLR(f)     (0x60000000 | (f))
+
+#define	SCR_CARRY	0x00000400
+#define	SCR_TRG		0x00000200
+#define	SCR_ACK		0x00000040
+#define	SCR_ATN		0x00000008
+
+
+
+
+/*-----------------------------------------------------------
+**
+**	Memory to memory move
+**
+**-----------------------------------------------------------
+**
+**	COPY (bytecount)
+**	<< source_address >>
+**	<< destination_address >>
+**
+**-----------------------------------------------------------
+*/
+
+#define SCR_COPY(n) (0xc0000000 | (n))
+
+/*-----------------------------------------------------------
+**
+**	Register move and binary operations
+**
+**-----------------------------------------------------------
+**
+**	SFBR_REG (reg, op, data)        reg  = SFBR op data
+**	<< 0 >>
+**
+**	REG_SFBR (reg, op, data)        SFBR = reg op data
+**	<< 0 >>
+**
+**	REG_REG  (reg, op, data)        reg  = reg op data
+**	<< 0 >>
+**
+**-----------------------------------------------------------
+*/
+
+#define SCR_REG_OFS(ofs) ((ofs) << 16ul)
+
+#define SCR_SFBR_REG(reg,op,data) \
+        (0x68000000 | (SCR_REG_OFS(REG(reg))) | (op) | ((data)<<8ul))
+
+#define SCR_REG_SFBR(reg,op,data) \
+        (0x70000000 | (SCR_REG_OFS(REG(reg))) | (op) | ((data)<<8ul))
+
+#define SCR_REG_REG(reg,op,data) \
+        (0x78000000 | (SCR_REG_OFS(REG(reg))) | (op) | ((data)<<8ul))
+
+
+#define      SCR_LOAD   0x00000000
+#define      SCR_SHL    0x01000000
+#define      SCR_OR     0x02000000
+#define      SCR_XOR    0x03000000
+#define      SCR_AND    0x04000000
+#define      SCR_SHR    0x05000000
+#define      SCR_ADD    0x06000000
+#define      SCR_ADDC   0x07000000
+
+/*-----------------------------------------------------------
+**
+**	FROM_REG (reg)		  reg  = SFBR
+**	<< 0 >>
+**
+**	TO_REG	 (reg)		  SFBR = reg
+**	<< 0 >>
+**
+**	LOAD_REG (reg, data)	  reg  = <data>
+**	<< 0 >>
+**
+**	LOAD_SFBR(data) 	  SFBR = <data>
+**	<< 0 >>
+**
+**-----------------------------------------------------------
+*/
+
+#define	SCR_FROM_REG(reg) \
+	SCR_REG_SFBR(reg,SCR_OR,0)
+
+#define	SCR_TO_REG(reg) \
+	SCR_SFBR_REG(reg,SCR_OR,0)
+
+#define	SCR_LOAD_REG(reg,data) \
+	SCR_REG_REG(reg,SCR_LOAD,data)
+
+#define SCR_LOAD_SFBR(data) \
+        (SCR_REG_SFBR (gpreg, SCR_LOAD, data))
+
+/*-----------------------------------------------------------
+**
+**	Waiting for Disconnect or Reselect
+**
+**-----------------------------------------------------------
+**
+**	JUMP            [ | IFTRUE/IFFALSE ( ... ) ]
+**	<<address>>
+**
+**	JUMPR           [ | IFTRUE/IFFALSE ( ... ) ]
+**	<<distance>>
+**
+**	CALL            [ | IFTRUE/IFFALSE ( ... ) ]
+**	<<address>>
+**
+**	CALLR           [ | IFTRUE/IFFALSE ( ... ) ]
+**	<<distance>>
+**
+**	RETURN          [ | IFTRUE/IFFALSE ( ... ) ]
+**	<<dummy>>
+**
+**	INT             [ | IFTRUE/IFFALSE ( ... ) ]
+**	<<ident>>
+**
+**	INT_FLY         [ | IFTRUE/IFFALSE ( ... ) ]
+**	<<ident>>
+**
+**	Conditions:
+**	     WHEN (phase)
+**	     IF   (phase)
+**	     CARRY
+**	     DATA (data, mask)
+**
+**-----------------------------------------------------------
+*/
+
+#define SCR_JUMP        0x80080000
+#define SCR_JUMPR       0x80880000
+#define SCR_CALL        0x88080000
+#define SCR_CALLR       0x88880000
+#define SCR_RETURN      0x90080000
+#define SCR_INT         0x98080000
+#define SCR_INT_FLY     0x98180000
+
+#define IFFALSE(arg)   (0x00080000 | (arg))
+#define IFTRUE(arg)    (0x00000000 | (arg))
+
+#define WHEN(phase)    (0x00030000 | (phase))
+#define IF(phase)      (0x00020000 | (phase))
+
+#define DATA(D)        (0x00040000 | ((D) & 0xff))
+#define MASK(D,M)      (0x00040000 | (((M ^ 0xff) & 0xff) << 8ul)|((D) & 0xff))
+
+#define CARRYSET       (0x00200000)
+
+/*-----------------------------------------------------------
+**
+**	SCSI  constants.
+**
+**-----------------------------------------------------------
+*/
+
+/*
+**	Messages
+*/
+
+#define	M_COMPLETE	(0x00)
+#define	M_EXTENDED	(0x01)
+#define	M_SAVE_DP	(0x02)
+#define	M_RESTORE_DP	(0x03)
+#define	M_DISCONNECT	(0x04)
+#define	M_ID_ERROR	(0x05)
+#define	M_ABORT		(0x06)
+#define	M_REJECT	(0x07)
+#define	M_NOOP		(0x08)
+#define	M_PARITY	(0x09)
+#define	M_LCOMPLETE	(0x0a)
+#define	M_FCOMPLETE	(0x0b)
+#define	M_RESET		(0x0c)
+#define	M_ABORT_TAG	(0x0d)
+#define	M_CLEAR_QUEUE	(0x0e)
+#define	M_INIT_REC	(0x0f)
+#define	M_REL_REC	(0x10)
+#define	M_TERMINATE	(0x11)
+#define	M_SIMPLE_TAG	(0x20)
+#define	M_HEAD_TAG	(0x21)
+#define	M_ORDERED_TAG	(0x22)
+#define	M_IGN_RESIDUE	(0x23)
+#define	M_IDENTIFY   	(0x80)
+
+#define	M_X_MODIFY_DP	(0x00)
+#define	M_X_SYNC_REQ	(0x01)
+#define	M_X_WIDE_REQ	(0x03)
+
+/*
+**	Status
+*/
+
+#define	S_GOOD		(0x00)
+#define	S_CHECK_COND	(0x02)
+#define	S_COND_MET	(0x04)
+#define	S_BUSY		(0x08)
+#define	S_INT		(0x10)
+#define	S_INT_COND_MET	(0x14)
+#define	S_CONFLICT	(0x18)
+#define	S_TERMINATED	(0x20)
+#define	S_QUEUE_FULL	(0x28)
+#define	S_ILLEGAL	(0xff)
+#define	S_SENSE		(0x80)
+
+/*
+ * End of ncrreg from FreeBSD
+ */
+
+#endif /* !defined HOSTS_C */
+
+#endif /* defined NCR53C8XX_H */