summaryrefslogblamecommitdiffstats
path: root/drivers/scsi/ncr53c8xx.h
blob: 02901c54b08be400d75afaf9d48816cb7346fddf (plain) (tree)
1
2
3
4
5
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091



                                                                               
                                                              

































                                                                                









                                                                        







                                                                               
 
  
                                                                     































































































































































                                                                          
                                                    












































                                                                             
                                    























































































































































































































































































                                                                                                                                                                                   
                                                       






























































































































































































































































































































































































































































































































































                                                                               
                                                        
































































































































































                                                                               

















                              















































                                                                                                          
                                                      
                                                  



                                 
/******************************************************************************
**  Device driver for the PCI-SCSI NCR538XX controller family.
**
**  Copyright (C) 1994  Wolfgang Stanglmeier
**  Copyright (C) 1998-2001  Gerard Roudier <groudier@free.fr>
**
**  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@free.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>
**
**  NVRAM detection and reading.
**    Copyright (C) 1997 Richard Waltham <dormouse@farsrobt.demon.co.uk>
**
**  Added support for MIPS big endian systems.
**    Carsten Langgaard, carstenl@mips.com
**    Copyright (C) 2000 MIPS Technologies, Inc.  All rights reserved.
**
**  Added support for HP PARISC big endian systems.
**    Copyright (C) 2000 MIPS Technologies, Inc.  All rights reserved.
**
*******************************************************************************
*/

#ifndef NCR53C8XX_H
#define NCR53C8XX_H

#include <scsi/scsi_host.h>


/*
**	If you want a driver as small as possible, donnot define the 
**	following options.
*/
#define SCSI_NCR_BOOT_COMMAND_LINE_SUPPORT
#define SCSI_NCR_DEBUG_INFO_SUPPORT

/*
**	To disable integrity checking, do not define the 
**	following option.
*/
#ifdef	CONFIG_SCSI_NCR53C8XX_INTEGRITY_CHECK
#	define SCSI_NCR_ENABLE_INTEGRITY_CHECK
#endif

/* ---------------------------------------------------------------------
** Take into account kernel configured parameters.
** Most of these options can be overridden at startup by a command line.
** ---------------------------------------------------------------------
*/

/*
 * For Ultra2 and Ultra3 SCSI support option, use special features. 
 *
 * Value (default) means:
 *	bit 0 : all features enabled, except:
 *		bit 1 : PCI Write And Invalidate.
 *		bit 2 : Data Phase Mismatch handling from SCRIPTS.
 *
 * Use boot options ncr53c8xx=specf:1 if you want all chip features to be 
 * enabled by the driver.
 */
#define	SCSI_NCR_SETUP_SPECIAL_FEATURES		(3)

#define SCSI_NCR_MAX_SYNC			(80)

/*
 * Allow tags from 2 to 256, default 8
 */
#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 > 256
#define SCSI_NCR_MAX_TAGS	(256)
#else
#define	SCSI_NCR_MAX_TAGS	CONFIG_SCSI_NCR53C8XX_MAX_TAGS
#endif
#else
#define SCSI_NCR_MAX_TAGS	(8)
#endif

/*
 * Allow tagged command queuing support if configured with default number 
 * of tags set to max (see above).
 */
#ifdef	CONFIG_SCSI_NCR53C8XX_DEFAULT_TAGS
#define	SCSI_NCR_SETUP_DEFAULT_TAGS	CONFIG_SCSI_NCR53C8XX_DEFAULT_TAGS
#elif	defined CONFIG_SCSI_NCR53C8XX_TAGGED_QUEUE
#define	SCSI_NCR_SETUP_DEFAULT_TAGS	SCSI_NCR_MAX_TAGS
#else
#define	SCSI_NCR_SETUP_DEFAULT_TAGS	(0)
#endif

/*
 * Immediate arbitration
 */
#if defined(CONFIG_SCSI_NCR53C8XX_IARB)
#define SCSI_NCR_IARB_SUPPORT
#endif

/*
 * Sync transfer frequency at startup.
 * Allow from 5Mhz to 80Mhz default 20 Mhz.
 */
#ifndef	CONFIG_SCSI_NCR53C8XX_SYNC
#define	CONFIG_SCSI_NCR53C8XX_SYNC	(20)
#elif	CONFIG_SCSI_NCR53C8XX_SYNC > SCSI_NCR_MAX_SYNC
#undef	CONFIG_SCSI_NCR53C8XX_SYNC
#define	CONFIG_SCSI_NCR53C8XX_SYNC	SCSI_NCR_MAX_SYNC
#endif

#if	CONFIG_SCSI_NCR53C8XX_SYNC == 0
#define	SCSI_NCR_SETUP_DEFAULT_SYNC	(255)
#elif	CONFIG_SCSI_NCR53C8XX_SYNC <= 5
#define	SCSI_NCR_SETUP_DEFAULT_SYNC	(50)
#elif	CONFIG_SCSI_NCR53C8XX_SYNC <= 20
#define	SCSI_NCR_SETUP_DEFAULT_SYNC	(250/(CONFIG_SCSI_NCR53C8XX_SYNC))
#elif	CONFIG_SCSI_NCR53C8XX_SYNC <= 33
#define	SCSI_NCR_SETUP_DEFAULT_SYNC	(11)
#elif	CONFIG_SCSI_NCR53C8XX_SYNC <= 40
#define	SCSI_NCR_SETUP_DEFAULT_SYNC	(10)
#else
#define	SCSI_NCR_SETUP_DEFAULT_SYNC 	(9)
#endif

/*
 * Disallow disconnections at boot-up
 */
#ifdef CONFIG_SCSI_NCR53C8XX_NO_DISCONNECT
#define SCSI_NCR_SETUP_DISCONNECTION	(0)
#else
#define SCSI_NCR_SETUP_DISCONNECTION	(1)
#endif

/*
 * Force synchronous negotiation for all targets
 */
#ifdef CONFIG_SCSI_NCR53C8XX_FORCE_SYNC_NEGO
#define SCSI_NCR_SETUP_FORCE_SYNC_NEGO	(1)
#else
#define SCSI_NCR_SETUP_FORCE_SYNC_NEGO	(0)
#endif

/*
 * Disable master parity checking (flawed hardwares need that)
 */
#ifdef CONFIG_SCSI_NCR53C8XX_DISABLE_MPARITY_CHECK
#define SCSI_NCR_SETUP_MASTER_PARITY	(0)
#else
#define SCSI_NCR_SETUP_MASTER_PARITY	(1)
#endif

/*
 * Disable scsi parity checking (flawed devices may need that)
 */
#ifdef CONFIG_SCSI_NCR53C8XX_DISABLE_PARITY_CHECK
#define SCSI_NCR_SETUP_SCSI_PARITY	(0)
#else
#define SCSI_NCR_SETUP_SCSI_PARITY	(1)
#endif

/*
 * Settle time after reset at boot-up
 */
#define SCSI_NCR_SETUP_SETTLE_TIME	(2)

/*
**	Bridge quirks work-around option defaulted to 1.
*/
#ifndef	SCSI_NCR_PCIQ_WORK_AROUND_OPT
#define	SCSI_NCR_PCIQ_WORK_AROUND_OPT	1
#endif

/*
**	Work-around common bridge misbehaviour.
**
**	- Do not flush posted writes in the opposite 
**	  direction on read.
**	- May reorder DMA writes to memory.
**
**	This option should not affect performances 
**	significantly, so it is the default.
*/
#if	SCSI_NCR_PCIQ_WORK_AROUND_OPT == 1
#define	SCSI_NCR_PCIQ_MAY_NOT_FLUSH_PW_UPSTREAM
#define	SCSI_NCR_PCIQ_MAY_REORDER_WRITES
#define	SCSI_NCR_PCIQ_MAY_MISS_COMPLETIONS

/*
**	Same as option 1, but also deal with 
**	misconfigured interrupts.
**
**	- Edge triggered instead of level sensitive.
**	- No interrupt line connected.
**	- IRQ number misconfigured.
**	
**	If no interrupt is delivered, the driver will 
**	catch the interrupt conditions 10 times per 
**	second. No need to say that this option is 
**	not recommended.
*/
#elif	SCSI_NCR_PCIQ_WORK_AROUND_OPT == 2
#define	SCSI_NCR_PCIQ_MAY_NOT_FLUSH_PW_UPSTREAM
#define	SCSI_NCR_PCIQ_MAY_REORDER_WRITES
#define	SCSI_NCR_PCIQ_MAY_MISS_COMPLETIONS
#define	SCSI_NCR_PCIQ_BROKEN_INTR

/*
**	Some bridge designers decided to flush 
**	everything prior to deliver the interrupt.
**	This option tries to deal with such a 
**	behaviour.
*/
#elif	SCSI_NCR_PCIQ_WORK_AROUND_OPT == 3
#define	SCSI_NCR_PCIQ_SYNC_ON_INTR
#endif

/*
**	Other parameters not configurable with "make config"
**	Avoid to change these constants, unless you know what you are doing.
*/

#define SCSI_NCR_ALWAYS_SIMPLE_TAG
#define SCSI_NCR_MAX_SCATTER	(127)
#define SCSI_NCR_MAX_TARGET	(16)

/*
**   Compute some desirable value for CAN_QUEUE 
**   and CMD_PER_LUN.
**   The driver will use lower values if these 
**   ones appear to be too large.
*/
#define SCSI_NCR_CAN_QUEUE	(8*SCSI_NCR_MAX_TAGS + 2*SCSI_NCR_MAX_TARGET)
#define SCSI_NCR_CMD_PER_LUN	(SCSI_NCR_MAX_TAGS)

#define SCSI_NCR_SG_TABLESIZE	(SCSI_NCR_MAX_SCATTER)
#define SCSI_NCR_TIMER_INTERVAL	(HZ)

#define SCSI_NCR_MAX_LUN	(16)

/*
 *  IO functions definition for big/little endian CPU support.
 *  For now, the NCR is only supported in little endian addressing mode, 
 */

#ifdef	__BIG_ENDIAN

#define	inw_l2b		inw
#define	inl_l2b		inl
#define	outw_b2l	outw
#define	outl_b2l	outl

#define	readb_raw	readb
#define	writeb_raw	writeb

#if defined(SCSI_NCR_BIG_ENDIAN)
#define	readw_l2b	__raw_readw
#define	readl_l2b	__raw_readl
#define	writew_b2l	__raw_writew
#define	writel_b2l	__raw_writel
#define	readw_raw	__raw_readw
#define	readl_raw	__raw_readl
#define	writew_raw	__raw_writew
#define	writel_raw	__raw_writel
#else	/* Other big-endian */
#define	readw_l2b	readw
#define	readl_l2b	readl
#define	writew_b2l	writew
#define	writel_b2l	writel
#define	readw_raw	readw
#define	readl_raw	readl
#define	writew_raw	writew
#define	writel_raw	writel
#endif

#else	/* little endian */

#define	inw_raw		inw
#define	inl_raw		inl
#define	outw_raw	outw
#define	outl_raw	outl

#define	readb_raw	readb
#define	readw_raw	readw
#define	readl_raw	readl
#define	writeb_raw	writeb
#define	writew_raw	writew
#define	writel_raw	writel

#endif

#if !defined(__hppa__) && !defined(__mips__)
#ifdef	SCSI_NCR_BIG_ENDIAN
#error	"The NCR in BIG ENDIAN addressing mode is not (yet) supported"
#endif
#endif

#define MEMORY_BARRIER()	mb()


/*
 *  If the NCR uses big endian addressing mode over the 
 *  PCI, actual io register addresses for byte and word 
 *  accesses must be changed according to lane routing.
 *  Btw, ncr_offb() and ncr_offw() macros only apply to 
 *  constants and so donnot generate bloated code.
 */

#if	defined(SCSI_NCR_BIG_ENDIAN)

#define ncr_offb(o)	(((o)&~3)+((~((o)&3))&3))
#define ncr_offw(o)	(((o)&~3)+((~((o)&3))&2))

#else

#define ncr_offb(o)	(o)
#define ncr_offw(o)	(o)

#endif

/*
 *  If the CPU and the NCR use same endian-ness addressing,
 *  no byte reordering is needed for script patching.
 *  Macro cpu_to_scr() is to be used for script patching.
 *  Macro scr_to_cpu() is to be used for getting a DWORD 
 *  from the script.
 */

#if	defined(__BIG_ENDIAN) && !defined(SCSI_NCR_BIG_ENDIAN)

#define cpu_to_scr(dw)	cpu_to_le32(dw)
#define scr_to_cpu(dw)	le32_to_cpu(dw)

#elif	defined(__LITTLE_ENDIAN) && defined(SCSI_NCR_BIG_ENDIAN)

#define cpu_to_scr(dw)	cpu_to_be32(dw)
#define scr_to_cpu(dw)	be32_to_cpu(dw)

#else

#define cpu_to_scr(dw)	(dw)
#define scr_to_cpu(dw)	(dw)

#endif

/*
 *  Access to the controller chip.
 *
 *  If the CPU and the NCR use same endian-ness addressing,
 *  no byte reordering is needed for accessing chip io 
 *  registers. Functions suffixed by '_raw' are assumed 
 *  to access the chip over the PCI without doing byte 
 *  reordering. Functions suffixed by '_l2b' are 
 *  assumed to perform little-endian to big-endian byte 
 *  reordering, those suffixed by '_b2l' blah, blah,
 *  blah, ...
 */

/*
 *  MEMORY mapped IO input / output
 */

#define INB_OFF(o)		readb_raw((char __iomem *)np->reg + ncr_offb(o))
#define OUTB_OFF(o, val)	writeb_raw((val), (char __iomem *)np->reg + ncr_offb(o))

#if	defined(__BIG_ENDIAN) && !defined(SCSI_NCR_BIG_ENDIAN)

#define INW_OFF(o)		readw_l2b((char __iomem *)np->reg + ncr_offw(o))
#define INL_OFF(o)		readl_l2b((char __iomem *)np->reg + (o))

#define OUTW_OFF(o, val)	writew_b2l((val), (char __iomem *)np->reg + ncr_offw(o))
#define OUTL_OFF(o, val)	writel_b2l((val), (char __iomem *)np->reg + (o))

#elif	defined(__LITTLE_ENDIAN) && defined(SCSI_NCR_BIG_ENDIAN)

#define INW_OFF(o)		readw_b2l((char __iomem *)np->reg + ncr_offw(o))
#define INL_OFF(o)		readl_b2l((char __iomem *)np->reg + (o))

#define OUTW_OFF(o, val)	writew_l2b((val), (char __iomem *)np->reg + ncr_offw(o))
#define OUTL_OFF(o, val)	writel_l2b((val), (char __iomem *)np->reg + (o))

#else

#ifdef CONFIG_SCSI_NCR53C8XX_NO_WORD_TRANSFERS
/* Only 8 or 32 bit transfers allowed */
#define INW_OFF(o)		(readb((char __iomem *)np->reg + ncr_offw(o)) << 8 | readb((char __iomem *)np->reg + ncr_offw(o) + 1))
#else
#define INW_OFF(o)		readw_raw((char __iomem *)np->reg + ncr_offw(o))
#endif
#define INL_OFF(o)		readl_raw((char __iomem *)np->reg + (o))

#ifdef CONFIG_SCSI_NCR53C8XX_NO_WORD_TRANSFERS
/* Only 8 or 32 bit transfers allowed */
#define OUTW_OFF(o, val)	do { writeb((char)((val) >> 8), (char __iomem *)np->reg + ncr_offw(o)); writeb((char)(val), (char __iomem *)np->reg + ncr_offw(o) + 1); } while (0)
#else
#define OUTW_OFF(o, val)	writew_raw((val), (char __iomem *)np->reg + ncr_offw(o))
#endif
#define OUTL_OFF(o, val)	writel_raw((val), (char __iomem *)np->reg + (o))

#endif

#define INB(r)		INB_OFF (offsetof(struct ncr_reg,r))
#define INW(r)		INW_OFF (offsetof(struct ncr_reg,r))
#define INL(r)		INL_OFF (offsetof(struct ncr_reg,r))

#define OUTB(r, val)	OUTB_OFF (offsetof(struct ncr_reg,r), (val))
#define OUTW(r, val)	OUTW_OFF (offsetof(struct ncr_reg,r), (val))
#define OUTL(r, val)	OUTL_OFF (offsetof(struct ncr_reg,r), (val))

/*
 *  Set bit field ON, OFF 
 */

#define OUTONB(r, m)	OUTB(r, INB(r) | (m))
#define OUTOFFB(r, m)	OUTB(r, INB(r) & ~(m))
#define OUTONW(r, m)	OUTW(r, INW(r) | (m))
#define OUTOFFW(r, m)	OUTW(r, INW(r) & ~(m))
#define OUTONL(r, m)	OUTL(r, INL(r) | (m))
#define OUTOFFL(r, m)	OUTL(r, INL(r) & ~(m))

/*
 *  We normally want the chip to have a consistent view
 *  of driver internal data structures when we restart it.
 *  Thus these macros.
 */
#define OUTL_DSP(v)				\
	do {					\
		MEMORY_BARRIER();		\
		OUTL (nc_dsp, (v));		\
	} while (0)

#define OUTONB_STD()				\
	do {					\
		MEMORY_BARRIER();		\
		OUTONB (nc_dcntl, (STD|NOCOM));	\
	} while (0)


/*
**   NCR53C8XX devices features table.
*/
struct ncr_chip {
	unsigned short	revision_id;
	unsigned char	burst_max;	/* log-base-2 of max burst */
	unsigned char	offset_max;
	unsigned char	nr_divisor;
	unsigned int	features;
#define FE_LED0		(1<<0)
#define FE_WIDE		(1<<1)    /* Wide data transfers */
#define FE_ULTRA	(1<<2)	  /* Ultra speed 20Mtrans/sec */
#define FE_DBLR		(1<<4)	  /* Clock doubler present */
#define FE_QUAD		(1<<5)	  /* Clock quadrupler present */
#define FE_ERL		(1<<6)    /* Enable read line */
#define FE_CLSE		(1<<7)    /* Cache line size enable */
#define FE_WRIE		(1<<8)    /* Write & Invalidate enable */
#define FE_ERMP		(1<<9)    /* Enable read multiple */
#define FE_BOF		(1<<10)   /* Burst opcode fetch */
#define FE_DFS		(1<<11)   /* DMA fifo size */
#define FE_PFEN		(1<<12)   /* Prefetch enable */
#define FE_LDSTR	(1<<13)   /* Load/Store supported */
#define FE_RAM		(1<<14)   /* On chip RAM present */
#define FE_VARCLK	(1<<15)   /* SCSI clock may vary */
#define FE_RAM8K	(1<<16)   /* On chip RAM sized 8Kb */
#define FE_64BIT	(1<<17)   /* Have a 64-bit PCI interface */
#define FE_IO256	(1<<18)   /* Requires full 256 bytes in PCI space */
#define FE_NOPM		(1<<19)   /* Scripts handles phase mismatch */
#define FE_LEDC		(1<<20)   /* Hardware control of LED */
#define FE_DIFF		(1<<21)   /* Support Differential SCSI */
#define FE_66MHZ 	(1<<23)   /* 66MHz PCI Support */
#define FE_DAC	 	(1<<24)   /* Support DAC cycles (64 bit addressing) */
#define FE_ISTAT1 	(1<<25)   /* Have ISTAT1, MBOX0, MBOX1 registers */
#define FE_DAC_IN_USE	(1<<26)	  /* Platform does DAC cycles */
#define FE_EHP		(1<<27)   /* 720: Even host parity */
#define FE_MUX		(1<<28)   /* 720: Multiplexed bus */
#define FE_EA		(1<<29)   /* 720: Enable Ack */

#define FE_CACHE_SET	(FE_ERL|FE_CLSE|FE_WRIE|FE_ERMP)
#define FE_SCSI_SET	(FE_WIDE|FE_ULTRA|FE_DBLR|FE_QUAD|F_CLK80)
#define FE_SPECIAL_SET	(FE_CACHE_SET|FE_BOF|FE_DFS|FE_LDSTR|FE_PFEN|FE_RAM)
};


/*
**	Driver setup structure.
**
**	This structure is initialized from linux config options.
**	It can be overridden at boot-up by the boot command line.
*/
#define SCSI_NCR_MAX_EXCLUDES 8
struct ncr_driver_setup {
	u8	master_parity;
	u8	scsi_parity;
	u8	disconnection;
	u8	special_features;
	u8	force_sync_nego;
	u8	reverse_probe;
	u8	pci_fix_up;
	u8	use_nvram;
	u8	verbose;
	u8	default_tags;
	u16	default_sync;
	u16	debug;
	u8	burst_max;
	u8	led_pin;
	u8	max_wide;
	u8	settle_delay;
	u8	diff_support;
	u8	irqm;
	u8	bus_check;
	u8	optimize;
	u8	recovery;
	u8	host_id;
	u16	iarb;
	u32	excludes[SCSI_NCR_MAX_EXCLUDES];
	char	tag_ctrl[100];
};

/*
**	Initial setup.
**	Can be overridden at startup by a command line.
*/
#define SCSI_NCR_DRIVER_SETUP			\
{						\
	SCSI_NCR_SETUP_MASTER_PARITY,		\
	SCSI_NCR_SETUP_SCSI_PARITY,		\
	SCSI_NCR_SETUP_DISCONNECTION,		\
	SCSI_NCR_SETUP_SPECIAL_FEATURES,	\
	SCSI_NCR_SETUP_FORCE_SYNC_NEGO,		\
	0,					\
	0,					\
	1,					\
	0,					\
	SCSI_NCR_SETUP_DEFAULT_TAGS,		\
	SCSI_NCR_SETUP_DEFAULT_SYNC,		\
	0x00,					\
	7,					\
	0,					\
	1,					\
	SCSI_NCR_SETUP_SETTLE_TIME,		\
	0,					\
	0,					\
	1,					\
	0,					\
	0,					\
	255,					\
	0x00					\
}

/*
**	Boot fail safe setup.
**	Override initial setup from boot command line:
**	ncr53c8xx=safe:y
*/
#define SCSI_NCR_DRIVER_SAFE_SETUP		\
{						\
	0,					\
	1,					\
	0,					\
	0,					\
	0,					\
	0,					\
	0,					\
	1,					\
	2,					\
	0,					\
	255,					\
	0x00,					\
	255,					\
	0,					\
	0,					\
	10,					\
	1,					\
	1,					\
	1,					\
	0,					\
	0,					\
	255					\
}

/**************** ORIGINAL CONTENT of ncrreg.h from FreeBSD ******************/

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

struct ncr_reg {
/*00*/  u8	nc_scntl0;    /* full arb., ena parity, par->ATN  */

/*01*/  u8	nc_scntl1;    /* no reset                         */
        #define   ISCON   0x10  /* connected to scsi		    */
        #define   CRST    0x08  /* force reset                      */
        #define   IARB    0x02  /* immediate arbitration            */

/*02*/  u8	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*/  u8	nc_scntl3;    /* cnf system clock dependent       */
	#define   EWS     0x08  /* cmd: enable wide scsi         [W]*/
	#define   ULTRA   0x80  /* cmd: ULTRA enable                */
				/* bits 0-2, 7 rsvd for C1010       */

/*04*/  u8	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*/  u8	nc_sxfer;	/* ### Sync speed and count         */
				/* bits 6-7 rsvd for C1010          */

/*06*/  u8	nc_sdid;	/* ### Destination-ID               */

/*07*/  u8	nc_gpreg;	/* ??? IO-Pins                      */

/*08*/  u8	nc_sfbr;	/* ### First byte in phase          */

/*09*/  u8	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*/  u8	nc_ssid;

/*0b*/  u8	nc_sbcl;

/*0c*/  u8	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*/  u8	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*/  u8	nc_sstat1;
	#define   FF3210  0xf0	/* sta: bytes in the scsi fifo      */

/*0f*/  u8	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   DM      0x04  /* sta: DIFFSENS mismatch (895/6 only) */
        #define   LDSC    0x02  /* sta: disconnect & reconnect      */

/*10*/  u8	nc_dsa;	/* --> Base page                    */
/*11*/  u8	nc_dsa1;
/*12*/  u8	nc_dsa2;
/*13*/  u8	nc_dsa3;

/*14*/  u8	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*/  u8	nc_istat1;	/* 896 and later cores only */
        #define   FLSH    0x04  /* sta: chip is flushing            */
        #define   SRUN    0x02  /* sta: scripts are running         */
        #define   SIRQD   0x01  /* r/w: disable INT pin             */

/*16*/  u8	nc_mbox0;	/* 896 and later cores only */
/*17*/  u8	nc_mbox1;	/* 896 and later cores only */

/*18*/	u8	nc_ctest0;
	#define   EHP     0x04	/* 720 even host parity             */
/*19*/  u8	nc_ctest1;

/*1a*/  u8	nc_ctest2;
	#define   CSIGP   0x40
				/* bits 0-2,7 rsvd for C1010        */

/*1b*/  u8	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 */
				/* bits 4-7 rsvd for C1010          */

/*1c*/  u32    nc_temp;	/* ### Temporary stack              */

/*20*/	u8	nc_dfifo;
/*21*/  u8	nc_ctest4;
	#define   MUX     0x80  /* 720 host bus multiplex mode      */
	#define   BDIS    0x80  /* mod: burst disable               */
	#define   MPEE    0x08  /* mod: master parity error enable  */

/*22*/  u8	nc_ctest5;
	#define   DFS     0x20  /* mod: dma fifo size               */
				/* bits 0-1, 3-7 rsvd for C1010          */
/*23*/  u8	nc_ctest6;

/*24*/  u32    nc_dbc;	/* ### Byte count and command       */
/*28*/  u32    nc_dnad;	/* ### Next command register        */
/*2c*/  u32    nc_dsp;	/* --> Script Pointer               */
/*30*/  u32    nc_dsps;	/* --> Script pointer save/opcode#2 */

/*34*/  u8	nc_scratcha;  /* Temporary register a            */
/*35*/  u8	nc_scratcha1;
/*36*/  u8	nc_scratcha2;
/*37*/  u8	nc_scratcha3;

/*38*/  u8	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*/  u8	nc_dien;
/*3a*/  u8	nc_sbr;

/*3b*/  u8	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   EA      0x20  /* mod: 720 enable-ack              */
	#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 */
				/* bits 0-1 rsvd for C1010          */

/*3c*/  u32	nc_adder;

/*40*/  u16	nc_sien;	/* -->: interrupt enable            */
/*42*/  u16	nc_sist;	/* <--: interrupt status            */
        #define   SBMC    0x1000/* sta: SCSI Bus Mode Change (895/6 only) */
        #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*/  u8	nc_slpar;
/*45*/  u8	nc_swide;
/*46*/  u8	nc_macntl;
/*47*/  u8	nc_gpcntl;
/*48*/  u8	nc_stime0;    /* cmd: timeout for select&handshake*/
/*49*/  u8	nc_stime1;    /* cmd: timeout user defined        */
/*4a*/  u16   nc_respid;    /* sta: Reselect-IDs                */

/*4c*/  u8	nc_stest0;

/*4d*/  u8	nc_stest1;
	#define   SCLK    0x80	/* Use the PCI clock as SCSI clock	*/
	#define   DBLEN   0x08	/* clock doubler running		*/
	#define   DBLSEL  0x04	/* clock doubler selected		*/
  

/*4e*/  u8	nc_stest2;
	#define   ROF     0x40	/* reset scsi offset (after gross error!) */
	#define   DIF     0x20  /* 720 SCSI differential mode             */
	#define   EXT     0x02  /* extended filtering                     */

/*4f*/  u8	nc_stest3;
	#define   TE     0x80	/* c: tolerAnt enable */
	#define   HSC    0x20	/* c: Halt SCSI Clock */
	#define   CSF    0x02	/* c: clear scsi fifo */

/*50*/  u16   nc_sidl;	/* Lowlevel: latched from scsi data */
/*52*/  u8	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)     */
				/* bits 0-5 rsvd for C1010          */

/*53*/  u8	nc_53_;
/*54*/  u16	nc_sodl;	/* Lowlevel: data out to scsi data  */
/*56*/	u8	nc_ccntl0;	/* Chip Control 0 (896)             */
	#define   ENPMJ  0x80	/* Enable Phase Mismatch Jump       */
	#define   PMJCTL 0x40	/* Phase Mismatch Jump Control      */
	#define   ENNDJ  0x20	/* Enable Non Data PM Jump          */
	#define   DISFC  0x10	/* Disable Auto FIFO Clear          */
	#define   DILS   0x02	/* Disable Internal Load/Store      */
	#define   DPR    0x01	/* Disable Pipe Req                 */

/*57*/	u8	nc_ccntl1;	/* Chip Control 1 (896)             */
	#define   ZMOD   0x80	/* High Impedance Mode              */
	#define	  DIC	 0x10	/* Disable Internal Cycles	    */
	#define   DDAC   0x08	/* Disable Dual Address Cycle       */
	#define   XTIMOD 0x04	/* 64-bit Table Ind. Indexing Mode  */
	#define   EXTIBMV 0x02	/* Enable 64-bit Table Ind. BMOV    */
	#define   EXDBMV 0x01	/* Enable 64-bit Direct BMOV        */

/*58*/  u16	nc_sbdl;	/* Lowlevel: data from scsi data    */
/*5a*/  u16	nc_5a_;

/*5c*/  u8	nc_scr0;	/* Working register B               */
/*5d*/  u8	nc_scr1;	/*                                  */
/*5e*/  u8	nc_scr2;	/*                                  */
/*5f*/  u8	nc_scr3;	/*                                  */

/*60*/  u8	nc_scrx[64];	/* Working register C-R             */
/*a0*/	u32	nc_mmrs;	/* Memory Move Read Selector        */
/*a4*/	u32	nc_mmws;	/* Memory Move Write Selector       */
/*a8*/	u32	nc_sfs;		/* Script Fetch Selector            */
/*ac*/	u32	nc_drs;		/* DSA Relative Selector            */
/*b0*/	u32	nc_sbms;	/* Static Block Move Selector       */
/*b4*/	u32	nc_dbms;	/* Dynamic Block Move Selector      */
/*b8*/	u32	nc_dnad64;	/* DMA Next Address 64              */
/*bc*/	u16	nc_scntl4;	/* C1010 only                       */
	#define   U3EN   0x80	/* Enable Ultra 3                   */
	#define   AIPEN	 0x40   /* Allow check upper byte lanes     */
	#define   XCLKH_DT 0x08 /* Extra clock of data hold on DT
					transfer edge	            */
	#define   XCLKH_ST 0x04 /* Extra clock of data hold on ST
					transfer edge	            */

/*be*/  u8	nc_aipcntl0;	/* Epat Control 1 C1010 only        */
/*bf*/  u8	nc_aipcntl1;	/* AIP Control C1010_66 Only        */

/*c0*/	u32	nc_pmjad1;	/* Phase Mismatch Jump Address 1    */
/*c4*/	u32	nc_pmjad2;	/* Phase Mismatch Jump Address 2    */
/*c8*/	u8	nc_rbc;		/* Remaining Byte Count             */
/*c9*/	u8	nc_rbc1;	/*                                  */
/*ca*/	u8	nc_rbc2;	/*                                  */
/*cb*/	u8	nc_rbc3;	/*                                  */

/*cc*/	u8	nc_ua;		/* Updated Address                  */
/*cd*/	u8	nc_ua1;		/*                                  */
/*ce*/	u8	nc_ua2;		/*                                  */
/*cf*/	u8	nc_ua3;		/*                                  */
/*d0*/	u32	nc_esa;		/* Entry Storage Address            */
/*d4*/	u8	nc_ia;		/* Instruction Address              */
/*d5*/	u8	nc_ia1;
/*d6*/	u8	nc_ia2;
/*d7*/	u8	nc_ia3;
/*d8*/	u32	nc_sbc;		/* SCSI Byte Count (3 bytes only)   */
/*dc*/	u32	nc_csbc;	/* Cumulative SCSI Byte Count       */

				/* Following for C1010 only         */
/*e0*/  u16	nc_crcpad;	/* CRC Value                        */
/*e2*/  u8	nc_crccntl0;	/* CRC control register             */
	#define   SNDCRC  0x10	/* Send CRC Request                 */
/*e3*/  u8	nc_crccntl1;	/* CRC control register             */
/*e4*/  u32	nc_crcdata;	/* CRC data register                */ 
/*e8*/  u32	nc_e8_;		/* rsvd 			    */
/*ec*/  u32	nc_ec_;		/* rsvd 			    */
/*f0*/  u16	nc_dfbc;	/* DMA FIFO byte count              */ 

};

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

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

typedef u32 ncrcmd;

/*-----------------------------------------------------------
**
**	SCSI phases
**
**	DT phases illegal for ncr driver.
**
**-----------------------------------------------------------
*/

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

#define SCR_ILG_OUT	0x04000000
#define SCR_ILG_IN	0x05000000

/*-----------------------------------------------------------
**
**	Data transfer via SCSI.
**
**-----------------------------------------------------------
**
**	MOVE_ABS (LEN)
**	<<start address>>
**
**	MOVE_IND (LEN)
**	<<dnad_offset>>
**
**	MOVE_TBL
**	<<dnad_offset>>
**
**-----------------------------------------------------------
*/

#define OPC_MOVE          0x08000000

#define SCR_MOVE_ABS(l) ((0x00000000 | OPC_MOVE) | (l))
#define SCR_MOVE_IND(l) ((0x20000000 | OPC_MOVE) | (l))
#define SCR_MOVE_TBL     (0x10000000 | OPC_MOVE)

#define SCR_CHMOV_ABS(l) ((0x00000000) | (l))
#define SCR_CHMOV_IND(l) ((0x20000000) | (l))
#define SCR_CHMOV_TBL     (0x10000000)

struct scr_tblmove {
        u32  size;
        u32  addr;
};

/*-----------------------------------------------------------
**
**	Selection
**
**-----------------------------------------------------------
**
**	SEL_ABS | SCR_ID (0..15)    [ | 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


#ifdef SCSI_NCR_BIG_ENDIAN
struct scr_tblsel {
        u8	sel_scntl3;
        u8	sel_id;
        u8	sel_sxfer;
        u8	sel_scntl4;	
};
#else
struct scr_tblsel {
        u8	sel_scntl4;	
        u8	sel_sxfer;
        u8	sel_id;
        u8	sel_scntl3;
};
#endif

#define SCR_JMP_REL     0x04000000
#define SCR_ID(id)	(((u32)(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 >>
**
**	SCR_COPY   sets the NO FLUSH option by default.
**	SCR_COPY_F does not set this option.
**
**	For chips which do not support this option,
**	ncr_copy_and_bind() will remove this bit.
**-----------------------------------------------------------
*/

#define SCR_NO_FLUSH 0x01000000

#define SCR_COPY(n) (0xc0000000 | SCR_NO_FLUSH | (n))
#define SCR_COPY_F(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 >>
**
**-----------------------------------------------------------
**	On 810A, 860, 825A, 875, 895 and 896 chips the content 
**	of SFBR register can be used as data (SCR_SFBR_DATA).
**	The 896 has additional IO registers starting at 
**	offset 0x80. Bit 7 of register offset is stored in 
**	bit 7 of the SCRIPTS instruction first DWORD.
**-----------------------------------------------------------
*/

#define SCR_REG_OFS(ofs) ((((ofs) & 0x7f) << 16ul) + ((ofs) & 0x80)) 

#define SCR_SFBR_REG(reg,op,data) \
        (0x68000000 | (SCR_REG_OFS(REG(reg))) | (op) | (((data)&0xff)<<8ul))

#define SCR_REG_SFBR(reg,op,data) \
        (0x70000000 | (SCR_REG_OFS(REG(reg))) | (op) | (((data)&0xff)<<8ul))

#define SCR_REG_REG(reg,op,data) \
        (0x78000000 | (SCR_REG_OFS(REG(reg))) | (op) | (((data)&0xff)<<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

#define      SCR_SFBR_DATA   (0x00800000>>8ul)	/* Use SFBR as data */

/*-----------------------------------------------------------
**
**	FROM_REG (reg)		  SFBR = reg
**	<< 0 >>
**
**	TO_REG	 (reg)		  reg  = SFBR
**	<< 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))

/*-----------------------------------------------------------
**
**	LOAD  from memory   to register.
**	STORE from register to memory.
**
**	Only supported by 810A, 860, 825A, 875, 895 and 896.
**
**-----------------------------------------------------------
**
**	LOAD_ABS (LEN)
**	<<start address>>
**
**	LOAD_REL (LEN)        (DSA relative)
**	<<dsa_offset>>
**
**-----------------------------------------------------------
*/

#define SCR_REG_OFS2(ofs) (((ofs) & 0xff) << 16ul)
#define SCR_NO_FLUSH2	0x02000000
#define SCR_DSA_REL2	0x10000000

#define SCR_LOAD_R(reg, how, n) \
        (0xe1000000 | how | (SCR_REG_OFS2(REG(reg))) | (n))

#define SCR_STORE_R(reg, how, n) \
        (0xe0000000 | how | (SCR_REG_OFS2(REG(reg))) | (n))

#define SCR_LOAD_ABS(reg, n)	SCR_LOAD_R(reg, SCR_NO_FLUSH2, n)
#define SCR_LOAD_REL(reg, n)	SCR_LOAD_R(reg, SCR_NO_FLUSH2|SCR_DSA_REL2, n)
#define SCR_LOAD_ABS_F(reg, n)	SCR_LOAD_R(reg, 0, n)
#define SCR_LOAD_REL_F(reg, n)	SCR_LOAD_R(reg, SCR_DSA_REL2, n)

#define SCR_STORE_ABS(reg, n)	SCR_STORE_R(reg, SCR_NO_FLUSH2, n)
#define SCR_STORE_REL(reg, n)	SCR_STORE_R(reg, SCR_NO_FLUSH2|SCR_DSA_REL2,n)
#define SCR_STORE_ABS_F(reg, n)	SCR_STORE_R(reg, 0, n)
#define SCR_STORE_REL_F(reg, n)	SCR_STORE_R(reg, SCR_DSA_REL2, n)


/*-----------------------------------------------------------
**
**	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)
**	     CARRYSET
**	     DATA (data, mask)
**
**-----------------------------------------------------------
*/

#define SCR_NO_OP       0x80000000
#define SCR_JUMP        0x80080000
#define SCR_JUMP64      0x80480000
#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.
**
**-----------------------------------------------------------
*/

/*
**	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
 */

/*
	Build a scatter/gather entry.
	see sym53c8xx_2/sym_hipd.h for more detailed sym_build_sge()
	implementation ;)
 */

#define ncr_build_sge(np, data, badd, len)	\
do {						\
	(data)->addr = cpu_to_scr(badd);	\
	(data)->size = cpu_to_scr(len);		\
} while (0)

/*==========================================================
**
**	Structures used by the detection routine to transmit 
**	device configuration to the attach function.
**
**==========================================================
*/
struct ncr_slot {
	u_long	base;
	u_long	base_2;
	u_long	base_c;
	u_long	base_2_c;
	void __iomem *base_v;
	void __iomem *base_2_v;
	int	irq;
/* port and reg fields to use INB, OUTB macros */
	volatile struct ncr_reg	__iomem *reg;
};

/*==========================================================
**
**	Structure used by detection routine to save data on 
**	each detected board for attach.
**
**==========================================================
*/
struct ncr_device {
	struct device  *dev;
	struct ncr_slot  slot;
	struct ncr_chip  chip;
	u_char host_id;
	u8 differential;
};

extern struct Scsi_Host *ncr_attach(struct scsi_host_template *tpnt, int unit, struct ncr_device *device);
extern void ncr53c8xx_release(struct Scsi_Host *host);
irqreturn_t ncr53c8xx_intr(int irq, void *dev_id);
extern int ncr53c8xx_init(void);
extern void ncr53c8xx_exit(void);

#endif /* NCR53C8XX_H */