Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 1608 insertions, 0 deletions

diff --git a/drivers/scsi/53c7xx.h b/drivers/scsi/53c7xx.h
new file mode 100644
index 000000000000..d9098bdace05
--- /dev/null
+++ b/drivers/scsi/53c7xx.h
@@ -0,0 +1,1608 @@
+/*
+ * 53c710 driver.  Modified from Drew Eckhardts driver
+ * for 53c810 by Richard Hirst [richard@sleepie.demon.co.uk]
+ *
+ * I have left the code for the 53c8xx family in here, because it didn't
+ * seem worth removing it.  The possibility of IO_MAPPED chips rather
+ * than MEMORY_MAPPED remains, in case someone wants to add support for
+ * 53c710 chips on Intel PCs (some older machines have them on the
+ * motherboard).
+ *
+ * NOTE THERE MAY BE PROBLEMS WITH CASTS IN read8 AND Co.
+ */
+
+/*
+ * NCR 53c{7,8}0x0 driver, header file
+ *
+ * Sponsored by
+ *      iX Multiuser Multitasking Magazine
+ *      Hannover, Germany
+ *      hm@ix.de        
+ *
+ * Copyright 1993, 1994, 1995 Drew Eckhardt
+ *      Visionary Computing 
+ *      (Unix and Linux consulting and custom programming)
+ *      drew@PoohSticks.ORG
+ *      +1 (303) 786-7975
+ *
+ * TolerANT and SCSI SCRIPTS are registered trademarks of NCR Corporation.
+ * 
+ * PRE-ALPHA
+ *
+ * For more information, please consult 
+ *
+ * NCR 53C700/53C700-66
+ * SCSI I/O Processor
+ * Data Manual
+ *
+ * NCR 53C810
+ * PCI-SCSI I/O Processor 
+ * Data Manual
+ *
+ * NCR Microelectronics
+ * 1635 Aeroplaza Drive
+ * Colorado Springs, CO 80916
+ * +1 (719) 578-3400
+ *
+ * Toll free literature number
+ * +1 (800) 334-5454
+ *
+ */
+
+#ifndef NCR53c710_H
+#define NCR53c710_H
+
+#ifndef HOSTS_C
+
+/* SCSI control 0 rw, default = 0xc0 */ 
+#define SCNTL0_REG              0x00    
+#define SCNTL0_ARB1             0x80    /* 0 0 = simple arbitration */
+#define SCNTL0_ARB2             0x40    /* 1 1 = full arbitration */
+#define SCNTL0_STRT             0x20    /* Start Sequence */
+#define SCNTL0_WATN             0x10    /* Select with ATN */
+#define SCNTL0_EPC              0x08    /* Enable parity checking */
+/* Bit 2 is reserved on 800 series chips */
+#define SCNTL0_EPG_700          0x04    /* Enable parity generation */
+#define SCNTL0_AAP              0x02    /*  ATN/ on parity error */
+#define SCNTL0_TRG              0x01    /* Target mode */
+
+/* SCSI control 1 rw, default = 0x00 */
+
+#define SCNTL1_REG              0x01    
+#define SCNTL1_EXC              0x80    /* Extra Clock Cycle of Data setup */
+#define SCNTL1_ADB              0x40    /*  contents of SODL on bus */
+#define SCNTL1_ESR_700          0x20    /* Enable SIOP response to selection 
+                                           and reselection */
+#define SCNTL1_DHP_800          0x20    /* Disable halt on parity error or ATN
+                                           target mode only */
+#define SCNTL1_CON              0x10    /* Connected */
+#define SCNTL1_RST              0x08    /* SCSI RST/ */
+#define SCNTL1_AESP             0x04    /* Force bad parity */
+#define SCNTL1_SND_700          0x02    /* Start SCSI send */
+#define SCNTL1_IARB_800         0x02    /* Immediate Arbitration, start
+                                           arbitration immediately after
+                                           busfree is detected */
+#define SCNTL1_RCV_700          0x01    /* Start SCSI receive */
+#define SCNTL1_SST_800          0x01    /* Start SCSI transfer */
+
+/* SCSI control 2 rw, */
+
+#define SCNTL2_REG_800          0x02    
+#define SCNTL2_800_SDU          0x80    /* SCSI disconnect unexpected */
+
+/* SCSI control 3 rw */
+
+#define SCNTL3_REG_800          0x03    
+#define SCNTL3_800_SCF_SHIFT    4
+#define SCNTL3_800_SCF_MASK     0x70
+#define SCNTL3_800_SCF2         0x40    /* Synchronous divisor */
+#define SCNTL3_800_SCF1         0x20    /* 0x00 = SCLK/3 */
+#define SCNTL3_800_SCF0         0x10    /* 0x10 = SCLK/1 */
+                                        /* 0x20 = SCLK/1.5 
+                                           0x30 = SCLK/2 
+                                           0x40 = SCLK/3 */
+            
+#define SCNTL3_800_CCF_SHIFT    0
+#define SCNTL3_800_CCF_MASK     0x07
+#define SCNTL3_800_CCF2         0x04    /* 0x00 50.01 to 66 */
+#define SCNTL3_800_CCF1         0x02    /* 0x01 16.67 to 25 */
+#define SCNTL3_800_CCF0         0x01    /* 0x02 25.01 - 37.5 
+                                           0x03 37.51 - 50 
+                                           0x04 50.01 - 66 */
+
+/*  
+ * SCSI destination ID rw - the appropriate bit is set for the selected
+ * target ID.  This is written by the SCSI SCRIPTS processor.
+ * default = 0x00
+ */
+#define SDID_REG_700            0x02    
+#define SDID_REG_800            0x06
+
+#define GP_REG_800              0x07    /* General purpose IO */
+#define GP_800_IO1              0x02
+#define GP_800_IO2              0x01
+
+/* SCSI interrupt enable rw, default = 0x00 */
+#define SIEN_REG_700            0x03    
+#define SIEN0_REG_800           0x40
+#define SIEN_MA                 0x80    /* Phase mismatch (ini) or ATN (tgt) */
+#define SIEN_FC                 0x40    /* Function complete */
+#define SIEN_700_STO            0x20    /* Selection or reselection timeout */
+#define SIEN_800_SEL            0x20    /* Selected */
+#define SIEN_700_SEL            0x10    /* Selected or reselected */
+#define SIEN_800_RESEL          0x10    /* Reselected */
+#define SIEN_SGE                0x08    /* SCSI gross error */
+#define SIEN_UDC                0x04    /* Unexpected disconnect */
+#define SIEN_RST                0x02    /* SCSI RST/ received */
+#define SIEN_PAR                0x01    /* Parity error */
+
+/* 
+ * SCSI chip ID rw
+ * NCR53c700 : 
+ *      When arbitrating, the highest bit is used, when reselection or selection
+ *      occurs, the chip responds to all IDs for which a bit is set.
+ *      default = 0x00 
+ * NCR53c810 : 
+ *      Uses bit mapping
+ */
+#define SCID_REG                0x04    
+/* Bit 7 is reserved on 800 series chips */
+#define SCID_800_RRE            0x40    /* Enable response to reselection */
+#define SCID_800_SRE            0x20    /* Enable response to selection */
+/* Bits four and three are reserved on 800 series chips */
+#define SCID_800_ENC_MASK       0x07    /* Encoded SCSI ID */
+
+/* SCSI transfer rw, default = 0x00 */
+#define SXFER_REG               0x05
+#define SXFER_DHP               0x80    /* Disable halt on parity */
+
+#define SXFER_TP2               0x40    /* Transfer period msb */
+#define SXFER_TP1               0x20
+#define SXFER_TP0               0x10    /* lsb */
+#define SXFER_TP_MASK           0x70
+/* FIXME : SXFER_TP_SHIFT == 5 is right for '8xx chips */
+#define SXFER_TP_SHIFT          5
+#define SXFER_TP_4              0x00    /* Divisors */
+#define SXFER_TP_5              0x10<<1
+#define SXFER_TP_6              0x20<<1
+#define SXFER_TP_7              0x30<<1
+#define SXFER_TP_8              0x40<<1
+#define SXFER_TP_9              0x50<<1
+#define SXFER_TP_10             0x60<<1
+#define SXFER_TP_11             0x70<<1
+
+#define SXFER_MO3               0x08    /* Max offset msb */
+#define SXFER_MO2               0x04
+#define SXFER_MO1               0x02
+#define SXFER_MO0               0x01    /* lsb */
+#define SXFER_MO_MASK           0x0f
+#define SXFER_MO_SHIFT          0
+
+/* 
+ * SCSI output data latch rw
+ * The contents of this register are driven onto the SCSI bus when 
+ * the Assert Data Bus bit of the SCNTL1 register is set and 
+ * the CD, IO, and MSG bits of the SOCL register match the SCSI phase
+ */
+#define SODL_REG_700            0x06    
+#define SODL_REG_800            0x54
+
+
+/* 
+ * SCSI output control latch rw, default = 0 
+ * Note that when the chip is being manually programmed as an initiator,
+ * the MSG, CD, and IO bits must be set correctly for the phase the target
+ * is driving the bus in.  Otherwise no data transfer will occur due to 
+ * phase mismatch.
+ */
+
+#define SOCL_REG                0x07
+#define SOCL_REQ                0x80    /*  REQ */
+#define SOCL_ACK                0x40    /*  ACK */
+#define SOCL_BSY                0x20    /*  BSY */
+#define SOCL_SEL                0x10    /*  SEL */
+#define SOCL_ATN                0x08    /*  ATN */
+#define SOCL_MSG                0x04    /*  MSG */
+#define SOCL_CD                 0x02    /*  C/D */
+#define SOCL_IO                 0x01    /*  I/O */
+
+/* 
+ * SCSI first byte received latch ro 
+ * This register contains the first byte received during a block MOVE 
+ * SCSI SCRIPTS instruction, including
+ * 
+ * Initiator mode       Target mode
+ * Message in           Command
+ * Status               Message out
+ * Data in              Data out
+ *
+ * It also contains the selecting or reselecting device's ID and our 
+ * ID.
+ *
+ * Note that this is the register the various IF conditionals can 
+ * operate on.
+ */
+#define SFBR_REG                0x08    
+
+/* 
+ * SCSI input data latch ro
+ * In initiator mode, data is latched into this register on the rising
+ * edge of REQ/. In target mode, data is latched on the rising edge of 
+ * ACK/
+ */
+#define SIDL_REG_700            0x09
+#define SIDL_REG_800            0x50
+
+/* 
+ * SCSI bus data lines ro 
+ * This register reflects the instantaneous status of the SCSI data 
+ * lines.  Note that SCNTL0 must be set to disable parity checking, 
+ * otherwise reading this register will latch new parity.
+ */
+#define SBDL_REG_700            0x0a
+#define SBDL_REG_800            0x58
+
+#define SSID_REG_800            0x0a
+#define SSID_800_VAL            0x80    /* Exactly two bits asserted at sel */
+#define SSID_800_ENCID_MASK     0x07    /* Device which performed operation */
+
+
+/* 
+ * SCSI bus control lines rw, 
+ * instantaneous readout of control lines 
+ */
+#define SBCL_REG                0x0b    
+#define SBCL_REQ                0x80    /*  REQ ro */
+#define SBCL_ACK                0x40    /*  ACK ro */
+#define SBCL_BSY                0x20    /*  BSY ro */
+#define SBCL_SEL                0x10    /*  SEL ro */
+#define SBCL_ATN                0x08    /*  ATN ro */
+#define SBCL_MSG                0x04    /*  MSG ro */
+#define SBCL_CD                 0x02    /*  C/D ro */
+#define SBCL_IO                 0x01    /*  I/O ro */
+#define SBCL_PHASE_CMDOUT       SBCL_CD
+#define SBCL_PHASE_DATAIN       SBCL_IO
+#define SBCL_PHASE_DATAOUT      0
+#define SBCL_PHASE_MSGIN        (SBCL_CD|SBCL_IO|SBCL_MSG)
+#define SBCL_PHASE_MSGOUT       (SBCL_CD|SBCL_MSG)
+#define SBCL_PHASE_STATIN       (SBCL_CD|SBCL_IO)
+#define SBCL_PHASE_MASK         (SBCL_CD|SBCL_IO|SBCL_MSG)
+/* 
+ * Synchronous SCSI Clock Control bits 
+ * 0 - set by DCNTL 
+ * 1 - SCLK / 1.0
+ * 2 - SCLK / 1.5
+ * 3 - SCLK / 2.0 
+ */
+#define SBCL_SSCF1              0x02    /* wo, -66 only */
+#define SBCL_SSCF0              0x01    /* wo, -66 only */
+#define SBCL_SSCF_MASK          0x03
+
+/* 
+ * XXX note : when reading the DSTAT and STAT registers to clear interrupts,
+ * insure that 10 clocks elapse between the two  
+ */
+/* DMA status ro */
+#define DSTAT_REG               0x0c    
+#define DSTAT_DFE               0x80    /* DMA FIFO empty */
+#define DSTAT_800_MDPE          0x40    /* Master Data Parity Error */
+#define DSTAT_800_BF            0x20    /* Bus Fault */
+#define DSTAT_ABRT              0x10    /* Aborted - set on error */
+#define DSTAT_SSI               0x08    /* SCRIPTS single step interrupt */
+#define DSTAT_SIR               0x04    /* SCRIPTS interrupt received - 
+                                           set when INT instruction is 
+                                           executed */
+#define DSTAT_WTD               0x02    /* Watchdog timeout detected */
+#define DSTAT_OPC               0x01    /* Illegal instruction */
+#define DSTAT_800_IID           0x01    /* Same thing, different name */
+
+
+/* NCR53c800 moves this stuff into SIST0 */
+#define SSTAT0_REG              0x0d    /* SCSI status 0 ro */
+#define SIST0_REG_800           0x42    
+#define SSTAT0_MA               0x80    /* ini : phase mismatch,
+                                         * tgt : ATN/ asserted 
+                                         */
+#define SSTAT0_CMP              0x40    /* function complete */
+#define SSTAT0_700_STO          0x20    /* Selection or reselection timeout */
+#define SIST0_800_SEL           0x20    /* Selected */
+#define SSTAT0_700_SEL          0x10    /* Selected or reselected */
+#define SIST0_800_RSL           0x10    /* Reselected */
+#define SSTAT0_SGE              0x08    /* SCSI gross error */
+#define SSTAT0_UDC              0x04    /* Unexpected disconnect */
+#define SSTAT0_RST              0x02    /* SCSI RST/ received */
+#define SSTAT0_PAR              0x01    /* Parity error */
+
+/* And uses SSTAT0 for what was SSTAT1 */
+
+#define SSTAT1_REG              0x0e    /* SCSI status 1 ro */
+#define SSTAT1_ILF              0x80    /* SIDL full */
+#define SSTAT1_ORF              0x40    /* SODR full */
+#define SSTAT1_OLF              0x20    /* SODL full */
+#define SSTAT1_AIP              0x10    /* Arbitration in progress */
+#define SSTAT1_LOA              0x08    /* Lost arbitration */
+#define SSTAT1_WOA              0x04    /* Won arbitration */
+#define SSTAT1_RST              0x02    /* Instant readout of RST/ */
+#define SSTAT1_SDP              0x01    /* Instant readout of SDP/ */
+
+#define SSTAT2_REG              0x0f    /* SCSI status 2 ro */
+#define SSTAT2_FF3              0x80    /* number of bytes in synchronous */
+#define SSTAT2_FF2              0x40    /* data FIFO */
+#define SSTAT2_FF1              0x20    
+#define SSTAT2_FF0              0x10
+#define SSTAT2_FF_MASK          0xf0
+#define SSTAT2_FF_SHIFT         4
+
+/* 
+ * Latched signals, latched on the leading edge of REQ/ for initiators,
+ * ACK/ for targets.
+ */
+#define SSTAT2_SDP              0x08    /* SDP */
+#define SSTAT2_MSG              0x04    /* MSG */
+#define SSTAT2_CD               0x02    /* C/D */
+#define SSTAT2_IO               0x01    /* I/O */
+#define SSTAT2_PHASE_CMDOUT     SSTAT2_CD
+#define SSTAT2_PHASE_DATAIN     SSTAT2_IO
+#define SSTAT2_PHASE_DATAOUT    0
+#define SSTAT2_PHASE_MSGIN      (SSTAT2_CD|SSTAT2_IO|SSTAT2_MSG)
+#define SSTAT2_PHASE_MSGOUT     (SSTAT2_CD|SSTAT2_MSG)
+#define SSTAT2_PHASE_STATIN     (SSTAT2_CD|SSTAT2_IO)
+#define SSTAT2_PHASE_MASK       (SSTAT2_CD|SSTAT2_IO|SSTAT2_MSG)
+
+
+/* NCR53c700-66 only */
+#define SCRATCHA_REG_00         0x10    /* through  0x13 Scratch A rw */
+/* NCR53c710 and higher */
+#define DSA_REG                 0x10    /* DATA structure address */
+
+#define CTEST0_REG_700          0x14    /* Chip test 0 ro */
+#define CTEST0_REG_800          0x18    /* Chip test 0 rw, general purpose */
+/* 0x80 - 0x04 are reserved */
+#define CTEST0_700_RTRG         0x02    /* Real target mode */
+#define CTEST0_700_DDIR         0x01    /* Data direction, 1 = 
+                                         * SCSI bus to host, 0  =
+                                         * host to SCSI.
+                                         */
+
+#define CTEST1_REG_700          0x15    /* Chip test 1 ro */
+#define CTEST1_REG_800          0x19    /* Chip test 1 ro */
+#define CTEST1_FMT3             0x80    /* Identify which byte lanes are empty */
+#define CTEST1_FMT2             0x40    /* in the DMA FIFO */
+#define CTEST1_FMT1             0x20
+#define CTEST1_FMT0             0x10
+
+#define CTEST1_FFL3             0x08    /* Identify which bytes lanes are full */
+#define CTEST1_FFL2             0x04    /* in the DMA FIFO */
+#define CTEST1_FFL1             0x02
+#define CTEST1_FFL0             0x01
+
+#define CTEST2_REG_700          0x16    /* Chip test 2 ro */
+#define CTEST2_REG_800          0x1a    /* Chip test 2 ro */
+
+#define CTEST2_800_DDIR         0x80    /* 1 = SCSI->host */
+#define CTEST2_800_SIGP         0x40    /* A copy of SIGP in ISTAT.
+                                           Reading this register clears */
+#define CTEST2_800_CIO          0x20    /* Configured as IO */.
+#define CTEST2_800_CM           0x10    /* Configured as memory */
+
+/* 0x80 - 0x40 are reserved on 700 series chips */
+#define CTEST2_700_SOFF         0x20    /* SCSI Offset Compare,
+                                         * As an initiator, this bit is 
+                                         * one when the synchronous offset
+                                         * is zero, as a target this bit 
+                                         * is one when the synchronous 
+                                         * offset is at the maximum
+                                         * defined in SXFER
+                                         */
+#define CTEST2_700_SFP          0x10    /* SCSI FIFO parity bit,
+                                         * reading CTEST3 unloads a byte
+                                         * from the FIFO and sets this
+                                         */
+#define CTEST2_700_DFP          0x08    /* DMA FIFO parity bit,
+                                         * reading CTEST6 unloads a byte
+                                         * from the FIFO and sets this
+                                         */
+#define CTEST2_TEOP             0x04    /* SCSI true end of process,
+                                         * indicates a totally finished
+                                         * transfer
+                                         */
+#define CTEST2_DREQ             0x02    /* Data request signal */
+/* 0x01 is reserved on 700 series chips */
+#define CTEST2_800_DACK         0x01    
+
+/* 
+ * Chip test 3 ro 
+ * Unloads the bottom byte of the eight deep SCSI synchronous FIFO,
+ * check SSTAT2 FIFO full bits to determine size.  Note that a GROSS
+ * error results if a read is attempted on this register.  Also note 
+ * that 16 and 32 bit reads of this register will cause corruption.
+ */
+#define CTEST3_REG_700          0x17    
+/*  Chip test 3 rw */
+#define CTEST3_REG_800          0x1b
+#define CTEST3_800_V3           0x80    /* Chip revision */
+#define CTEST3_800_V2           0x40
+#define CTEST3_800_V1           0x20
+#define CTEST3_800_V0           0x10
+#define CTEST3_800_FLF          0x08    /* Flush DMA FIFO */
+#define CTEST3_800_CLF          0x04    /* Clear DMA FIFO */
+#define CTEST3_800_FM           0x02    /* Fetch mode pin */
+/* bit 0 is reserved on 800 series chips */
+
+#define CTEST4_REG_700          0x18    /* Chip test 4 rw */
+#define CTEST4_REG_800          0x21    /* Chip test 4 rw */
+/* 0x80 is reserved on 700 series chips */
+#define CTEST4_800_BDIS         0x80    /* Burst mode disable */
+#define CTEST4_ZMOD             0x40    /* High impedance mode */
+#define CTEST4_SZM              0x20    /* SCSI bus high impedance */
+#define CTEST4_700_SLBE         0x10    /* SCSI loopback enabled */
+#define CTEST4_800_SRTM         0x10    /* Shadow Register Test Mode */
+#define CTEST4_700_SFWR         0x08    /* SCSI FIFO write enable, 
+                                         * redirects writes from SODL
+                                         * to the SCSI FIFO.
+                                         */
+#define CTEST4_800_MPEE         0x08    /* Enable parity checking
+                                           during master cycles on PCI
+                                           bus */
+
+/* 
+ * These bits send the contents of the CTEST6 register to the appropriate
+ * byte lane of the 32 bit DMA FIFO.  Normal operation is zero, otherwise 
+ * the high bit means the low two bits select the byte lane.
+ */
+#define CTEST4_FBL2             0x04    
+#define CTEST4_FBL1             0x02
+#define CTEST4_FBL0             0x01    
+#define CTEST4_FBL_MASK         0x07
+#define CTEST4_FBL_0            0x04    /* Select DMA FIFO byte lane 0 */
+#define CTEST4_FBL_1            0x05    /* Select DMA FIFO byte lane 1 */
+#define CTEST4_FBL_2            0x06    /* Select DMA FIFO byte lane 2 */
+#define CTEST4_FBL_3            0x07    /* Select DMA FIFO byte lane 3 */
+#define CTEST4_800_SAVE         (CTEST4_800_BDIS)
+
+
+#define CTEST5_REG_700          0x19    /* Chip test 5 rw */
+#define CTEST5_REG_800          0x22    /* Chip test 5 rw */
+/* 
+ * Clock Address Incrementor.  When set, it increments the 
+ * DNAD register to the next bus size boundary.  It automatically 
+ * resets itself when the operation is complete.
+ */
+#define CTEST5_ADCK             0x80
+/*
+ * Clock Byte Counter.  When set, it decrements the DBC register to
+ * the next bus size boundary.
+ */
+#define CTEST5_BBCK             0x40
+/*
+ * Reset SCSI Offset.  Setting this bit to 1 clears the current offset
+ * pointer in the SCSI synchronous offset counter (SSTAT).  This bit
+ * is set to 1 if a SCSI Gross Error Condition occurs.  The offset should
+ * be cleared when a synchronous transfer fails.  When written, it is 
+ * automatically cleared after the SCSI synchronous offset counter is 
+ * reset.
+ */
+/* Bit 5 is reserved on 800 series chips */
+#define CTEST5_700_ROFF         0x20
+/* 
+ * Master Control for Set or Reset pulses. When 1, causes the low 
+ * four bits of register to set when set, 0 causes the low bits to
+ * clear when set.
+ */
+#define CTEST5_MASR             0x10    
+#define CTEST5_DDIR             0x08    /* DMA direction */
+/*
+ * Bits 2-0 are reserved on 800 series chips
+ */
+#define CTEST5_700_EOP          0x04    /* End of process */
+#define CTEST5_700_DREQ         0x02    /* Data request */
+#define CTEST5_700_DACK         0x01    /* Data acknowledge */
+
+/* 
+ * Chip test 6 rw - writing to this register writes to the byte 
+ * lane in the DMA FIFO as determined by the FBL bits in the CTEST4
+ * register.
+ */
+#define CTEST6_REG_700          0x1a
+#define CTEST6_REG_800          0x23
+
+#define CTEST7_REG              0x1b    /* Chip test 7 rw */
+/* 0x80 - 0x40 are reserved on NCR53c700 and NCR53c700-66 chips */
+#define CTEST7_10_CDIS          0x80    /* Cache burst disable */
+#define CTEST7_10_SC1           0x40    /* Snoop control bits */
+#define CTEST7_10_SC0           0x20    
+#define CTEST7_10_SC_MASK       0x60
+/* 0x20 is reserved on the NCR53c700 */
+#define CTEST7_0060_FM          0x20    /* Fetch mode */
+#define CTEST7_STD              0x10    /* Selection timeout disable */
+#define CTEST7_DFP              0x08    /* DMA FIFO parity bit for CTEST6 */
+#define CTEST7_EVP              0x04    /* 1 = host bus even parity, 0 = odd */
+#define CTEST7_10_TT1           0x02    /* Transfer type */
+#define CTEST7_00_DC            0x02    /* Set to drive DC low during instruction 
+                                           fetch */
+#define CTEST7_DIFF             0x01    /* Differential mode */
+
+#define CTEST7_SAVE ( CTEST7_EVP | CTEST7_DIFF )
+
+
+#define TEMP_REG                0x1c    /* through 0x1f Temporary stack rw */
+
+#define DFIFO_REG               0x20    /* DMA FIFO rw */
+/* 
+ * 0x80 is reserved on the NCR53c710, the CLF and FLF bits have been
+ * moved into the CTEST8 register.
+ */
+#define DFIFO_00_FLF            0x80    /* Flush DMA FIFO to memory */
+#define DFIFO_00_CLF            0x40    /* Clear DMA and SCSI FIFOs */
+#define DFIFO_BO6               0x40
+#define DFIFO_BO5               0x20
+#define DFIFO_BO4               0x10
+#define DFIFO_BO3               0x08
+#define DFIFO_BO2               0x04 
+#define DFIFO_BO1               0x02
+#define DFIFO_BO0               0x01
+#define DFIFO_10_BO_MASK        0x7f    /* 7 bit counter */
+#define DFIFO_00_BO_MASK        0x3f    /* 6 bit counter */
+
+/* 
+ * Interrupt status rw 
+ * Note that this is the only register which can be read while SCSI
+ * SCRIPTS are being executed.
+ */
+#define ISTAT_REG_700           0x21
+#define ISTAT_REG_800           0x14
+#define ISTAT_ABRT              0x80    /* Software abort, write 
+                                         *1 to abort, wait for interrupt. */
+/* 0x40 and 0x20 are reserved on NCR53c700 and NCR53c700-66 chips */
+#define ISTAT_10_SRST           0x40    /* software reset */
+#define ISTAT_10_SIGP           0x20    /* signal script */
+/* 0x10 is reserved on NCR53c700 series chips */
+#define ISTAT_800_SEM           0x10    /* semaphore */
+#define ISTAT_CON               0x08    /* 1 when connected */
+#define ISTAT_800_INTF          0x04    /* Interrupt on the fly */
+#define ISTAT_700_PRE           0x04    /* Pointer register empty.
+                                         * Set to 1 when DSPS and DSP
+                                         * registers are empty in pipeline
+                                         * mode, always set otherwise.
+                                         */
+#define ISTAT_SIP               0x02    /* SCSI interrupt pending from
+                                         * SCSI portion of SIOP see
+                                         * SSTAT0
+                                         */
+#define ISTAT_DIP               0x01    /* DMA interrupt pending 
+                                         * see DSTAT
+                                         */
+
+/* NCR53c700-66 and NCR53c710 only */
+#define CTEST8_REG              0x22    /* Chip test 8 rw */
+#define CTEST8_0066_EAS         0x80    /* Enable alternate SCSI clock,
+                                         * ie read from SCLK/ rather than CLK/
+                                         */
+#define CTEST8_0066_EFM         0x40    /* Enable fetch and master outputs */
+#define CTEST8_0066_GRP         0x20    /* Generate Receive Parity for 
+                                         * pass through.  This insures that 
+                                         * bad parity won't reach the host 
+                                         * bus.
+                                         */
+#define CTEST8_0066_TE          0x10    /* TolerANT enable.  Enable 
+                                         * active negation, should only
+                                         * be used for slow SCSI 
+                                         * non-differential.
+                                         */
+#define CTEST8_0066_HSC         0x08    /* Halt SCSI clock */
+#define CTEST8_0066_SRA         0x04    /* Shorten REQ/ACK filtering,
+                                         * must be set for fast SCSI-II
+                                         * speeds.
+                                         */
+#define CTEST8_0066_DAS         0x02    /* Disable automatic target/initiator
+                                         * switching.
+                                         */
+#define CTEST8_0066_LDE         0x01    /* Last disconnect enable.
+                                         * The status of pending 
+                                         * disconnect is maintained by
+                                         * the core, eliminating
+                                         * the possibility of missing a 
+                                         * selection or reselection
+                                         * while waiting to fetch a 
+                                         * WAIT DISCONNECT opcode.
+                                         */
+
+#define CTEST8_10_V3            0x80    /* Chip revision */
+#define CTEST8_10_V2            0x40
+#define CTEST8_10_V1            0x20    
+#define CTEST8_10_V0            0x10
+#define CTEST8_10_V_MASK        0xf0    
+#define CTEST8_10_FLF           0x08    /* Flush FIFOs */
+#define CTEST8_10_CLF           0x04    /* Clear FIFOs */
+#define CTEST8_10_FM            0x02    /* Fetch pin mode */
+#define CTEST8_10_SM            0x01    /* Snoop pin mode */
+
+
+/* 
+ * The CTEST9 register may be used to differentiate between a
+ * NCR53c700 and a NCR53c710.  
+ *
+ * Write 0xff to this register.
+ * Read it.
+ * If the contents are 0xff, it is a NCR53c700
+ * If the contents are 0x00, it is a NCR53c700-66 first revision
+ * If the contents are some other value, it is some other NCR53c700-66
+ */
+#define CTEST9_REG_00           0x23    /* Chip test 9 ro */
+#define LCRC_REG_10             0x23    
+
+/*
+ * 0x24 through 0x27 are the DMA byte counter register.  Instructions
+ * write their high 8 bits into the DCMD register, the low 24 bits into
+ * the DBC register.
+ *
+ * Function is dependent on the command type being executed.
+ */
+
+ 
+#define DBC_REG                 0x24
+/* 
+ * For Block Move Instructions, DBC is a 24 bit quantity representing 
+ *     the number of bytes to transfer.
+ * For Transfer Control Instructions, DBC is bit fielded as follows : 
+ */
+/* Bits 20 - 23 should be clear */
+#define DBC_TCI_TRUE            (1 << 19)       /* Jump when true */
+#define DBC_TCI_COMPARE_DATA    (1 << 18)       /* Compare data */
+#define DBC_TCI_COMPARE_PHASE   (1 << 17)       /* Compare phase with DCMD field */
+#define DBC_TCI_WAIT_FOR_VALID  (1 << 16)       /* Wait for REQ */
+/* Bits 8 - 15 are reserved on some implementations ? */
+#define DBC_TCI_MASK_MASK       0xff00          /* Mask for data compare */
+#define DBC_TCI_MASK_SHIFT      8
+#define DBC_TCI_DATA_MASK       0xff            /* Data to be compared */ 
+#define DBC_TCI_DATA_SHIFT      0
+
+#define DBC_RWRI_IMMEDIATE_MASK 0xff00          /* Immediate data */
+#define DBC_RWRI_IMMEDIATE_SHIFT 8              /* Amount to shift */
+#define DBC_RWRI_ADDRESS_MASK   0x3f0000        /* Register address */
+#define DBC_RWRI_ADDRESS_SHIFT  16
+
+
+/*
+ * DMA command r/w
+ */
+#define DCMD_REG                0x27    
+#define DCMD_TYPE_MASK          0xc0    /* Masks off type */
+#define DCMD_TYPE_BMI           0x00    /* Indicates a Block Move instruction */
+#define DCMD_BMI_IO             0x01    /* I/O, CD, and MSG bits selecting   */
+#define DCMD_BMI_CD             0x02    /* the phase for the block MOVE      */
+#define DCMD_BMI_MSG            0x04    /* instruction                       */
+
+#define DCMD_BMI_OP_MASK        0x18    /* mask for opcode */
+#define DCMD_BMI_OP_MOVE_T      0x00    /* MOVE */
+#define DCMD_BMI_OP_MOVE_I      0x08    /* MOVE Initiator */
+
+#define DCMD_BMI_INDIRECT       0x20    /*  Indirect addressing */
+
+#define DCMD_TYPE_TCI           0x80    /* Indicates a Transfer Control 
+                                           instruction */
+#define DCMD_TCI_IO             0x01    /* I/O, CD, and MSG bits selecting   */
+#define DCMD_TCI_CD             0x02    /* the phase for the block MOVE      */
+#define DCMD_TCI_MSG            0x04    /* instruction                       */
+#define DCMD_TCI_OP_MASK        0x38    /* mask for opcode */
+#define DCMD_TCI_OP_JUMP        0x00    /* JUMP */
+#define DCMD_TCI_OP_CALL        0x08    /* CALL */
+#define DCMD_TCI_OP_RETURN      0x10    /* RETURN */
+#define DCMD_TCI_OP_INT         0x18    /* INT */
+
+#define DCMD_TYPE_RWRI          0x40    /* Indicates I/O or register Read/Write
+                                           instruction */
+#define DCMD_RWRI_OPC_MASK      0x38    /* Opcode mask */
+#define DCMD_RWRI_OPC_WRITE     0x28    /* Write SFBR to register */
+#define DCMD_RWRI_OPC_READ      0x30    /* Read register to SFBR */
+#define DCMD_RWRI_OPC_MODIFY    0x38    /* Modify in place */
+
+#define DCMD_RWRI_OP_MASK       0x07
+#define DCMD_RWRI_OP_MOVE       0x00
+#define DCMD_RWRI_OP_SHL        0x01
+#define DCMD_RWRI_OP_OR         0x02
+#define DCMD_RWRI_OP_XOR        0x03
+#define DCMD_RWRI_OP_AND        0x04
+#define DCMD_RWRI_OP_SHR        0x05
+#define DCMD_RWRI_OP_ADD        0x06
+#define DCMD_RWRI_OP_ADDC       0x07
+
+#define DCMD_TYPE_MMI           0xc0    /* Indicates a Memory Move instruction 
+                                           (three words) */
+
+
+#define DNAD_REG                0x28    /* through 0x2b DMA next address for 
+                                           data */
+#define DSP_REG                 0x2c    /* through 0x2f DMA SCRIPTS pointer rw */
+#define DSPS_REG                0x30    /* through 0x33 DMA SCRIPTS pointer 
+                                           save rw */
+#define DMODE_REG_00            0x34    /* DMA mode rw */
+#define DMODE_00_BL1    0x80    /* Burst length bits */
+#define DMODE_00_BL0    0x40
+#define DMODE_BL_MASK   0xc0
+/* Burst lengths (800) */
+#define DMODE_BL_2      0x00    /* 2 transfer */
+#define DMODE_BL_4      0x40    /* 4 transfers */
+#define DMODE_BL_8      0x80    /* 8 transfers */
+#define DMODE_BL_16     0xc0    /* 16 transfers */
+
+#define DMODE_10_BL_1   0x00    /* 1 transfer */
+#define DMODE_10_BL_2   0x40    /* 2 transfers */
+#define DMODE_10_BL_4   0x80    /* 4 transfers */
+#define DMODE_10_BL_8   0xc0    /* 8 transfers */
+#define DMODE_10_FC2    0x20    /* Driven to FC2 pin */
+#define DMODE_10_FC1    0x10    /* Driven to FC1 pin */
+#define DMODE_710_PD    0x08    /* Program/data on FC0 pin */
+#define DMODE_710_UO    0x02    /* User prog. output */
+
+#define DMODE_700_BW16  0x20    /* Host buswidth = 16 */
+#define DMODE_700_286   0x10    /* 286 mode */
+#define DMODE_700_IOM   0x08    /* Transfer to IO port */
+#define DMODE_700_FAM   0x04    /* Fixed address mode */
+#define DMODE_700_PIPE  0x02    /* Pipeline mode disables 
+                                         * automatic fetch / exec 
+                                         */
+#define DMODE_MAN       0x01            /* Manual start mode, 
+                                         * requires a 1 to be written
+                                         * to the start DMA bit in the DCNTL
+                                         * register to run scripts 
+                                         */
+
+#define DMODE_700_SAVE ( DMODE_00_BL_MASK | DMODE_00_BW16 | DMODE_00_286 )
+
+/* NCR53c800 series only */
+#define SCRATCHA_REG_800        0x34    /* through 0x37 Scratch A rw */
+/* NCR53c710 only */
+#define SCRATCHB_REG_10         0x34    /* through 0x37 scratch B rw */
+
+#define DMODE_REG_10            0x38    /* DMA mode rw, NCR53c710 and newer */
+#define DMODE_800_SIOM          0x20    /* Source IO = 1 */
+#define DMODE_800_DIOM          0x10    /* Destination IO = 1 */
+#define DMODE_800_ERL           0x08    /* Enable Read Line */
+
+/* 35-38 are reserved on 700 and 700-66 series chips */
+#define DIEN_REG                0x39    /* DMA interrupt enable rw */
+/* 0x80, 0x40, and 0x20 are reserved on 700-series chips */
+#define DIEN_800_MDPE           0x40    /* Master data parity error */
+#define DIEN_800_BF             0x20    /* BUS fault */
+#define DIEN_700_BF             0x20    /* BUS fault */
+#define DIEN_ABRT               0x10    /* Enable aborted interrupt */
+#define DIEN_SSI                0x08    /* Enable single step interrupt */
+#define DIEN_SIR                0x04    /* Enable SCRIPTS INT command 
+                                         * interrupt
+                                         */
+/* 0x02 is reserved on 800 series chips */
+#define DIEN_700_WTD            0x02    /* Enable watchdog timeout interrupt */
+#define DIEN_700_OPC            0x01    /* Enable illegal instruction 
+                                         * interrupt 
+                                         */
+#define DIEN_800_IID            0x01    /*  Same meaning, different name */ 
+
+/*
+ * DMA watchdog timer rw
+ * set in 16 CLK input periods.
+ */
+#define DWT_REG                 0x3a
+
+/* DMA control rw */
+#define DCNTL_REG               0x3b
+#define DCNTL_700_CF1           0x80    /* Clock divisor bits */
+#define DCNTL_700_CF0           0x40
+#define DCNTL_700_CF_MASK       0xc0
+/* Clock divisors                          Divisor SCLK range (MHZ) */
+#define DCNTL_700_CF_2          0x00    /* 2.0     37.51-50.00 */
+#define DCNTL_700_CF_1_5        0x40    /* 1.5     25.01-37.50 */
+#define DCNTL_700_CF_1          0x80    /* 1.0     16.67-25.00 */
+#define DCNTL_700_CF_3          0xc0    /* 3.0     50.01-66.67 (53c700-66) */
+
+#define DCNTL_700_S16           0x20    /* Load scripts 16 bits at a time */
+#define DCNTL_SSM               0x10    /* Single step mode */
+#define DCNTL_700_LLM           0x08    /* Low level mode, can only be set 
+                                         * after selection */
+#define DCNTL_800_IRQM          0x08    /* Totem pole IRQ pin */
+#define DCNTL_STD               0x04    /* Start DMA / SCRIPTS */
+/* 0x02 is reserved */
+#define DCNTL_00_RST            0x01    /* Software reset, resets everything
+                                         * but 286 mode bit  in DMODE. On the
+                                         * NCR53c710, this bit moved to CTEST8
+                                         */
+#define DCNTL_10_COM            0x01    /* 700 software compatibility mode */
+#define DCNTL_10_EA             0x20    /* Enable Ack - needed for MVME16x */
+
+#define DCNTL_700_SAVE ( DCNTL_CF_MASK | DCNTL_S16)
+
+
+/* NCR53c700-66 only */
+#define SCRATCHB_REG_00         0x3c    /* through 0x3f scratch b rw */
+#define SCRATCHB_REG_800        0x5c    /* through 0x5f scratch b rw */
+/* NCR53c710 only */
+#define ADDER_REG_10            0x3c    /* Adder, NCR53c710 only */
+
+#define SIEN1_REG_800           0x41
+#define SIEN1_800_STO           0x04    /* selection/reselection timeout */
+#define SIEN1_800_GEN           0x02    /* general purpose timer */
+#define SIEN1_800_HTH           0x01    /* handshake to handshake */
+
+#define SIST1_REG_800           0x43
+#define SIST1_800_STO           0x04    /* selection/reselection timeout */
+#define SIST1_800_GEN           0x02    /* general purpose timer */
+#define SIST1_800_HTH           0x01    /* handshake to handshake */
+
+#define SLPAR_REG_800           0x44    /* Parity */
+
+#define MACNTL_REG_800          0x46    /* Memory access control */
+#define MACNTL_800_TYP3         0x80
+#define MACNTL_800_TYP2         0x40
+#define MACNTL_800_TYP1         0x20
+#define MACNTL_800_TYP0         0x10
+#define MACNTL_800_DWR          0x08
+#define MACNTL_800_DRD          0x04
+#define MACNTL_800_PSCPT        0x02
+#define MACNTL_800_SCPTS        0x01
+
+#define GPCNTL_REG_800          0x47    /* General Purpose Pin Control */
+
+/* Timeouts are expressed such that 0=off, 1=100us, doubling after that */
+#define STIME0_REG_800          0x48    /* SCSI Timer Register 0 */
+#define STIME0_800_HTH_MASK     0xf0    /* Handshake to Handshake timeout */
+#define STIME0_800_HTH_SHIFT    4
+#define STIME0_800_SEL_MASK     0x0f    /* Selection timeout */
+#define STIME0_800_SEL_SHIFT    0
+
+#define STIME1_REG_800          0x49
+#define STIME1_800_GEN_MASK     0x0f    /* General purpose timer */
+
+#define RESPID_REG_800          0x4a    /* Response ID, bit fielded.  8
+                                           bits on narrow chips, 16 on WIDE */
+
+#define STEST0_REG_800          0x4c    
+#define STEST0_800_SLT          0x08    /* Selection response logic test */
+#define STEST0_800_ART          0x04    /* Arbitration priority encoder test */
+#define STEST0_800_SOZ          0x02    /* Synchronous offset zero */
+#define STEST0_800_SOM          0x01    /* Synchronous offset maximum */
+
+#define STEST1_REG_800          0x4d
+#define STEST1_800_SCLK         0x80    /* Disable SCSI clock */
+
+#define STEST2_REG_800          0x4e    
+#define STEST2_800_SCE          0x80    /* Enable SOCL/SODL */
+#define STEST2_800_ROF          0x40    /* Reset SCSI sync offset */
+#define STEST2_800_SLB          0x10    /* Enable SCSI loopback mode */
+#define STEST2_800_SZM          0x08    /* SCSI high impedance mode */
+#define STEST2_800_EXT          0x02    /* Extend REQ/ACK filter 30 to 60ns */
+#define STEST2_800_LOW          0x01    /* SCSI low level mode */
+
+#define STEST3_REG_800          0x4f     
+#define STEST3_800_TE           0x80    /* Enable active negation */
+#define STEST3_800_STR          0x40    /* SCSI FIFO test read */
+#define STEST3_800_HSC          0x20    /* Halt SCSI clock */
+#define STEST3_800_DSI          0x10    /* Disable single initiator response */
+#define STEST3_800_TTM          0x04    /* Time test mode */
+#define STEST3_800_CSF          0x02    /* Clear SCSI FIFO */
+#define STEST3_800_STW          0x01    /* SCSI FIFO test write */
+
+#define OPTION_PARITY           0x1     /* Enable parity checking */
+#define OPTION_TAGGED_QUEUE     0x2     /* Enable SCSI-II tagged queuing */
+#define OPTION_700              0x8     /* Always run NCR53c700 scripts */
+#define OPTION_INTFLY           0x10    /* Use INTFLY interrupts */
+#define OPTION_DEBUG_INTR       0x20    /* Debug interrupts */
+#define OPTION_DEBUG_INIT_ONLY  0x40    /* Run initialization code and 
+                                           simple test code, return
+                                           DID_NO_CONNECT if any SCSI
+                                           commands are attempted. */
+#define OPTION_DEBUG_READ_ONLY  0x80    /* Return DID_ERROR if any 
+                                           SCSI write is attempted */
+#define OPTION_DEBUG_TRACE      0x100   /* Animated trace mode, print 
+                                           each address and instruction 
+                                           executed to debug buffer. */
+#define OPTION_DEBUG_SINGLE     0x200   /* stop after executing one 
+                                           instruction */
+#define OPTION_SYNCHRONOUS      0x400   /* Enable sync SCSI.  */
+#define OPTION_MEMORY_MAPPED    0x800   /* NCR registers have valid 
+                                           memory mapping */
+#define OPTION_IO_MAPPED        0x1000  /* NCR registers have valid
+                                             I/O mapping */
+#define OPTION_DEBUG_PROBE_ONLY 0x2000  /* Probe only, don't even init */
+#define OPTION_DEBUG_TESTS_ONLY 0x4000  /* Probe, init, run selected tests */
+#define OPTION_DEBUG_TEST0      0x08000 /* Run test 0 */
+#define OPTION_DEBUG_TEST1      0x10000 /* Run test 1 */
+#define OPTION_DEBUG_TEST2      0x20000 /* Run test 2 */
+#define OPTION_DEBUG_DUMP       0x40000 /* Dump commands */
+#define OPTION_DEBUG_TARGET_LIMIT 0x80000 /* Only talk to target+luns specified */
+#define OPTION_DEBUG_NCOMMANDS_LIMIT 0x100000 /* Limit the number of commands */
+#define OPTION_DEBUG_SCRIPT 0x200000 /* Print when checkpoints are passed */
+#define OPTION_DEBUG_FIXUP 0x400000 /* print fixup values */
+#define OPTION_DEBUG_DSA 0x800000
+#define OPTION_DEBUG_CORRUPTION 0x1000000       /* Detect script corruption */
+#define OPTION_DEBUG_SDTR       0x2000000       /* Debug SDTR problem */
+#define OPTION_DEBUG_MISMATCH   0x4000000       /* Debug phase mismatches */
+#define OPTION_DISCONNECT       0x8000000       /* Allow disconnect */
+#define OPTION_DEBUG_DISCONNECT 0x10000000      
+#define OPTION_ALWAYS_SYNCHRONOUS 0x20000000    /* Negotiate sync. transfers
+                                                   on power up */
+#define OPTION_DEBUG_QUEUES     0x80000000      
+#define OPTION_DEBUG_ALLOCATION 0x100000000LL
+#define OPTION_DEBUG_SYNCHRONOUS 0x200000000LL  /* Sanity check SXFER and 
+                                                   SCNTL3 registers */
+#define OPTION_NO_ASYNC 0x400000000LL           /* Don't automagically send
+                                                   SDTR for async transfers when
+                                                   we haven't been told to do
+                                                   a synchronous transfer. */
+#define OPTION_NO_PRINT_RACE 0x800000000LL      /* Don't print message when
+                                                   the reselect/WAIT DISCONNECT
+                                                   race condition hits */
+#if !defined(PERM_OPTIONS)
+#define PERM_OPTIONS 0
+#endif
+                                
+/*
+ * Some data which is accessed by the NCR chip must be 4-byte aligned.
+ * For some hosts the default is less than that (eg. 68K uses 2-byte).
+ * Alignment has only been forced where it is important; also if one
+ * 32 bit structure field is aligned then it is assumed that following
+ * 32 bit fields are also aligned.  Take care when adding fields
+ * which are other than 32 bit.
+ */
+
+struct NCR53c7x0_synchronous {
+    u32 select_indirect                 /* Value used for indirect selection */
+        __attribute__ ((aligned (4)));
+    u32 sscf_710;                       /* Used to set SSCF bits for 710 */
+    u32 script[8];                      /* Size ?? Script used when target is 
+                                                reselected */
+    unsigned char synchronous_want[5];  /* Per target desired SDTR */
+/* 
+ * Set_synchronous programs these, select_indirect and current settings after
+ * int_debug_should show a match.
+ */
+    unsigned char sxfer_sanity, scntl3_sanity;
+};
+
+#define CMD_FLAG_SDTR           1       /* Initiating synchronous 
+                                           transfer negotiation */
+#define CMD_FLAG_WDTR           2       /* Initiating wide transfer
+                                           negotiation */
+#define CMD_FLAG_DID_SDTR       4       /* did SDTR */
+#define CMD_FLAG_DID_WDTR       8       /* did WDTR */
+
+struct NCR53c7x0_table_indirect {
+    u32 count;
+    void *address;
+};
+
+enum ncr_event { 
+    EVENT_NONE = 0,
+/* 
+ * Order is IMPORTANT, since these must correspond to the event interrupts
+ * in 53c7,8xx.scr 
+ */
+
+    EVENT_ISSUE_QUEUE = 0x5000000,      /* 0 Command was added to issue queue */
+    EVENT_START_QUEUE,                  /* 1 Command moved to start queue */
+    EVENT_SELECT,                       /* 2 Command completed selection */
+    EVENT_DISCONNECT,                   /* 3 Command disconnected */
+    EVENT_RESELECT,                     /* 4 Command reselected */
+    EVENT_COMPLETE,                     /* 5 Command completed */
+    EVENT_IDLE,                         /* 6 */
+    EVENT_SELECT_FAILED,                /* 7 */
+    EVENT_BEFORE_SELECT,                /* 8 */
+    EVENT_RESELECT_FAILED               /* 9 */
+};
+
+struct NCR53c7x0_event {
+    enum ncr_event event;       /* What type of event */
+    unsigned char target;
+    unsigned char lun;
+    struct timeval time;        
+    u32 *dsa;                   /* What's in the DSA register now (virt) */
+/* 
+ * A few things from that SCSI pid so we know what happened after 
+ * the Scsi_Cmnd structure in question may have disappeared.
+ */
+    unsigned long pid;          /* The SCSI PID which caused this 
+                                   event */
+    unsigned char cmnd[12];
+};
+
+/*
+ * Things in the NCR53c7x0_cmd structure are split into two parts :
+ *
+ * 1.  A fixed portion, for things which are not accessed directly by static NCR
+ *      code (ie, are referenced only by the Linux side of the driver,
+ *      or only by dynamically generated code).  
+ *
+ * 2.  The DSA portion, for things which are accessed directly by static NCR
+ *      code.
+ *
+ * This is a little ugly, but it 
+ * 1.  Avoids conflicts between the NCR code's picture of the structure, and 
+ *      Linux code's idea of what it looks like.
+ *
+ * 2.  Minimizes the pain in the Linux side of the code needed 
+ *      to calculate real dsa locations for things, etc.
+ * 
+ */
+
+struct NCR53c7x0_cmd {
+    void *real;                         /* Real, unaligned address for
+                                           free function */
+    void (* free)(void *, int);         /* Command to deallocate; NULL
+                                           for structures allocated with
+                                           scsi_register, etc. */
+    Scsi_Cmnd *cmd;                     /* Associated Scsi_Cmnd 
+                                           structure, Scsi_Cmnd points
+                                           at NCR53c7x0_cmd using 
+                                           host_scribble structure */
+
+    int size;                           /* scsi_malloc'd size of this 
+                                           structure */
+
+    int flags;                          /* CMD_* flags */
+
+    unsigned char      cmnd[12];        /* CDB, copied from Scsi_Cmnd */
+    int                result;          /* Copy to Scsi_Cmnd when done */
+
+    struct {                            /* Private non-cached bounce buffer */
+        unsigned char buf[256];
+        u32           addr;
+        u32           len;
+    } bounce;
+
+/*
+ * SDTR and WIDE messages are an either/or affair
+ * in this message, since we will go into message out and send
+ * _the whole mess_ without dropping out of message out to 
+ * let the target go into message in after sending the first 
+ * message.
+ */
+
+    unsigned char select[11];           /* Select message, includes
+                                           IDENTIFY
+                                           (optional) QUEUE TAG
+                                           (optional) SDTR or WDTR
+                                         */
+
+
+    volatile struct NCR53c7x0_cmd *next; /* Linux maintained lists (free,
+                                            running, eventually finished */
+                                         
+
+    u32 *data_transfer_start;           /* Start of data transfer routines */
+    u32 *data_transfer_end;             /* Address after end of data transfer o
+                                           routines */
+/* 
+ * The following three fields were moved from the DSA proper to here
+ * since only dynamically generated NCR code refers to them, meaning
+ * we don't need dsa_* absolutes, and it is simpler to let the 
+ * host code refer to them directly.
+ */
+
+/* 
+ * HARD CODED : residual and saved_residual need to agree with the sizes
+ * used in NCR53c7,8xx.scr.  
+ * 
+ * FIXME: we want to consider the case where we have odd-length 
+ *      scatter/gather buffers and a WIDE transfer, in which case 
+ *      we'll need to use the CHAIN MOVE instruction.  Ick.
+ */
+    u32 residual[6] __attribute__ ((aligned (4)));
+                                        /* Residual data transfer which
+                                           allows pointer code to work
+                                           right.
+
+                                            [0-1] : Conditional call to 
+                                                appropriate other transfer 
+                                                routine.
+                                            [2-3] : Residual block transfer
+                                                instruction.
+                                            [4-5] : Jump to instruction
+                                                after splice.
+                                         */
+    u32 saved_residual[6];              /* Copy of old residual, so we 
+                                           can get another partial 
+                                           transfer and still recover 
+                                         */
+                
+    u32 saved_data_pointer;             /* Saved data pointer */
+
+    u32 dsa_next_addr;                  /* _Address_ of dsa_next field  
+                                           in this dsa for RISCy 
+                                           style constant. */
+
+    u32 dsa_addr;                       /* Address of dsa; RISCy style
+                                           constant */
+
+    u32 dsa[0];                         /* Variable length (depending
+                                           on host type, number of scatter /
+                                           gather buffers, etc).  */
+};
+
+struct NCR53c7x0_break {
+    u32 *address, old_instruction[2];
+    struct NCR53c7x0_break *next;
+    unsigned char old_size;             /* Size of old instruction */
+};
+
+/* Indicates that the NCR is not executing code */
+#define STATE_HALTED    0               
+/* 
+ * Indicates that the NCR is executing the wait for select / reselect 
+ * script.  Only used when running NCR53c700 compatible scripts, only 
+ * state during which an ABORT is _not_ considered an error condition.
+ */
+#define STATE_WAITING   1               
+/* Indicates that the NCR is executing other code. */
+#define STATE_RUNNING   2               
+/* 
+ * Indicates that the NCR was being aborted.
+ */
+#define STATE_ABORTING  3
+/* Indicates that the NCR was successfully aborted. */
+#define STATE_ABORTED 4
+/* Indicates that the NCR has been disabled due to a fatal error */
+#define STATE_DISABLED 5
+
+/* 
+ * Where knowledge of SCSI SCRIPT(tm) specified values are needed 
+ * in an interrupt handler, an interrupt handler exists for each 
+ * different SCSI script so we don't have name space problems.
+ * 
+ * Return values of these handlers are as follows : 
+ */
+#define SPECIFIC_INT_NOTHING    0       /* don't even restart */
+#define SPECIFIC_INT_RESTART    1       /* restart at the next instruction */
+#define SPECIFIC_INT_ABORT      2       /* recoverable error, abort cmd */
+#define SPECIFIC_INT_PANIC      3       /* unrecoverable error, panic */
+#define SPECIFIC_INT_DONE       4       /* normal command completion */
+#define SPECIFIC_INT_BREAK      5       /* break point encountered */
+
+struct NCR53c7x0_hostdata {
+    int size;                           /* Size of entire Scsi_Host
+                                           structure */
+    int board;                          /* set to board type, useful if 
+                                           we have host specific things,
+                                           ie, a general purpose I/O 
+                                           bit is being used to enable
+                                           termination, etc. */
+
+    int chip;                           /* set to chip type; 700-66 is
+                                           700-66, rest are last three
+                                           digits of part number */
+
+    char valid_ids[8];                  /* Valid SCSI ID's for adapter */
+
+    u32 *dsp;                           /* dsp to restart with after
+                                           all stacked interrupts are
+                                           handled. */
+
+    unsigned dsp_changed:1;             /* Has dsp changed within this
+                                           set of stacked interrupts ? */
+
+    unsigned char dstat;                /* Most recent value of dstat */
+    unsigned dstat_valid:1;
+
+    unsigned expecting_iid:1;           /* Expect IID interrupt */
+    unsigned expecting_sto:1;           /* Expect STO interrupt */
+    
+    /* 
+     * The code stays cleaner if we use variables with function
+     * pointers and offsets that are unique for the different
+     * scripts rather than having a slew of switch(hostdata->chip) 
+     * statements.
+     * 
+     * It also means that the #defines from the SCSI SCRIPTS(tm)
+     * don't have to be visible outside of the script-specific
+     * instructions, preventing name space pollution.
+     */
+
+    void (* init_fixup)(struct Scsi_Host *host);
+    void (* init_save_regs)(struct Scsi_Host *host);
+    void (* dsa_fixup)(struct NCR53c7x0_cmd *cmd);
+    void (* soft_reset)(struct Scsi_Host *host);
+    int (* run_tests)(struct Scsi_Host *host);
+
+    /*
+     * Called when DSTAT_SIR is set, indicating an interrupt generated
+     * by the INT instruction, where values are unique for each SCSI
+     * script.  Should return one of the SPEC_* values.
+     */
+
+    int (* dstat_sir_intr)(struct Scsi_Host *host, struct NCR53c7x0_cmd *cmd);
+
+    int dsa_len; /* Size of DSA structure */
+
+    /*
+     * Location of DSA fields for the SCSI SCRIPT corresponding to this 
+     * chip.  
+     */
+
+    s32 dsa_start;                      
+    s32 dsa_end;                        
+    s32 dsa_next;
+    s32 dsa_prev;
+    s32 dsa_cmnd;
+    s32 dsa_select;
+    s32 dsa_msgout;
+    s32 dsa_cmdout;
+    s32 dsa_dataout;
+    s32 dsa_datain;
+    s32 dsa_msgin;
+    s32 dsa_msgout_other;
+    s32 dsa_write_sync;
+    s32 dsa_write_resume;
+    s32 dsa_check_reselect;
+    s32 dsa_status;
+    s32 dsa_saved_pointer;
+    s32 dsa_jump_dest;
+
+    /* 
+     * Important entry points that generic fixup code needs
+     * to know about, fixed up.
+     */
+
+    s32 E_accept_message;
+    s32 E_command_complete;             
+    s32 E_data_transfer;
+    s32 E_dsa_code_template;
+    s32 E_dsa_code_template_end;
+    s32 E_end_data_transfer;
+    s32 E_msg_in;
+    s32 E_initiator_abort;
+    s32 E_other_transfer;
+    s32 E_other_in;
+    s32 E_other_out;
+    s32 E_target_abort;
+    s32 E_debug_break;  
+    s32 E_reject_message;
+    s32 E_respond_message;
+    s32 E_select;
+    s32 E_select_msgout;
+    s32 E_test_0;
+    s32 E_test_1;
+    s32 E_test_2;
+    s32 E_test_3;
+    s32 E_dsa_zero;
+    s32 E_cmdout_cmdout;
+    s32 E_wait_reselect;
+    s32 E_dsa_code_begin;
+
+    long long options;                  /* Bitfielded set of options enabled */
+    volatile u32 test_completed;        /* Test completed */
+    int test_running;                   /* Test currently running */
+    s32 test_source
+        __attribute__ ((aligned (4)));
+    volatile s32 test_dest;
+
+    volatile int state;                 /* state of driver, only used for 
+                                           OPTION_700 */
+
+    unsigned char  dmode;               /* 
+                                         * set to the address of the DMODE 
+                                         * register for this chip.
+                                         */
+    unsigned char istat;                /* 
+                                         * set to the address of the ISTAT 
+                                         * register for this chip.
+                                         */
+  
+    int scsi_clock;                     /* 
+                                         * SCSI clock in HZ. 0 may be used 
+                                         * for unknown, although this will
+                                         * disable synchronous negotiation.
+                                         */
+
+    volatile int intrs;                 /* Number of interrupts */
+    volatile int resets;                /* Number of SCSI resets */
+    unsigned char saved_dmode;  
+    unsigned char saved_ctest4;
+    unsigned char saved_ctest7;
+    unsigned char saved_dcntl;
+    unsigned char saved_scntl3;
+
+    unsigned char this_id_mask;
+
+    /* Debugger information */
+    struct NCR53c7x0_break *breakpoints, /* Linked list of all break points */
+        *breakpoint_current;            /* Current breakpoint being stepped 
+                                           through, NULL if we are running 
+                                           normally. */
+#ifdef NCR_DEBUG
+    int debug_size;                     /* Size of debug buffer */
+    volatile int debug_count;           /* Current data count */
+    volatile char *debug_buf;           /* Output ring buffer */
+    volatile char *debug_write;         /* Current write pointer */
+    volatile char *debug_read;          /* Current read pointer */
+#endif /* def NCR_DEBUG */
+
+    /* XXX - primitive debugging junk, remove when working ? */
+    int debug_print_limit;              /* Number of commands to print
+                                           out exhaustive debugging
+                                           information for if 
+                                           OPTION_DEBUG_DUMP is set */ 
+
+    unsigned char debug_lun_limit[16];  /* If OPTION_DEBUG_TARGET_LIMIT
+                                           set, puke if commands are sent
+                                           to other target/lun combinations */
+
+    int debug_count_limit;              /* Number of commands to execute
+                                           before puking to limit debugging 
+                                           output */
+                                    
+
+    volatile unsigned idle:1;                   /* set to 1 if idle */
+
+    /* 
+     * Table of synchronous+wide transfer parameters set on a per-target
+     * basis.
+     */
+    
+    volatile struct NCR53c7x0_synchronous sync[16]
+        __attribute__ ((aligned (4)));
+
+    volatile Scsi_Cmnd *issue_queue
+        __attribute__ ((aligned (4)));
+                                                /* waiting to be issued by
+                                                   Linux driver */
+    volatile struct NCR53c7x0_cmd *running_list;        
+                                                /* commands running, maintained
+                                                   by Linux driver */
+
+    volatile struct NCR53c7x0_cmd *ncrcurrent;  /* currently connected 
+                                                   nexus, ONLY valid for
+                                                   NCR53c700/NCR53c700-66
+                                                 */
+
+    volatile struct NCR53c7x0_cmd *spare;       /* pointer to spare,
+                                                   allocated at probe time,
+                                                   which we can use for 
+                                                   initialization */
+    volatile struct NCR53c7x0_cmd *free;
+    int max_cmd_size;                           /* Maximum size of NCR53c7x0_cmd
+                                                   based on number of 
+                                                   scatter/gather segments, etc.
+                                                   */
+    volatile int num_cmds;                      /* Number of commands 
+                                                   allocated */
+    volatile int extra_allocate;
+    volatile unsigned char cmd_allocated[16];   /* Have we allocated commands
+                                                   for this target yet?  If not,
+                                                   do so ASAP */
+    volatile unsigned char busy[16][8];         /* number of commands 
+                                                   executing on each target
+                                                 */
+    /* 
+     * Eventually, I'll switch to a coroutine for calling 
+     * cmd->done(cmd), etc. so that we can overlap interrupt
+     * processing with this code for maximum performance.
+     */
+    
+    volatile struct NCR53c7x0_cmd *finished_queue;      
+                                                
+    /* Shared variables between SCRIPT and host driver */
+    volatile u32 *schedule
+        __attribute__ ((aligned (4)));          /* Array of JUMPs to dsa_begin
+                                                   routines of various DSAs.  
+                                                   When not in use, replace
+                                                   with jump to next slot */
+
+
+    volatile unsigned char msg_buf[16];         /* buffer for messages
+                                                   other than the command
+                                                   complete message */
+
+    /* Per-target default synchronous and WIDE messages */
+    volatile unsigned char synchronous_want[16][5];
+    volatile unsigned char wide_want[16][4];
+
+    /* Bit fielded set of targets we want to speak synchronously with */ 
+    volatile u16 initiate_sdtr; 
+    /* Bit fielded set of targets we want to speak wide with */
+    volatile u16 initiate_wdtr;
+    /* Bit fielded list of targets we've talked to. */
+    volatile u16 talked_to;
+
+    /* Array of bit-fielded lun lists that we need to request_sense */
+    volatile unsigned char request_sense[16];
+
+    u32 addr_reconnect_dsa_head
+        __attribute__ ((aligned (4)));          /* RISCy style constant,
+                                                   address of following */
+    volatile u32 reconnect_dsa_head;    
+    /* Data identifying nexus we are trying to match during reselection */
+    volatile unsigned char reselected_identify; /* IDENTIFY message */
+    volatile unsigned char reselected_tag;      /* second byte of queue tag 
+                                                   message or 0 */
+
+    /* These were static variables before we moved them */
+
+    s32 NCR53c7xx_zero
+        __attribute__ ((aligned (4)));
+    s32 NCR53c7xx_sink;
+    u32 NOP_insn;
+    char NCR53c7xx_msg_reject;
+    char NCR53c7xx_msg_abort;
+    char NCR53c7xx_msg_nop;
+
+    /*
+     * Following item introduced by RGH to support NCRc710, which is
+     * VERY brain-dead when it come to memory moves
+     */
+
+                          /* DSA save area used only by the NCR chip */
+    volatile unsigned long saved2_dsa
+        __attribute__ ((aligned (4)));
+
+    volatile unsigned long emulated_intfly
+        __attribute__ ((aligned (4)));
+
+    volatile int event_size, event_index;
+    volatile struct NCR53c7x0_event *events;
+
+    /* If we need to generate code to kill off the currently connected 
+       command, this is where we do it. Should have a BMI instruction
+       to source or sink the current data, followed by a JUMP
+       to abort_connected */
+
+    u32 *abort_script;
+
+    int script_count;                           /* Size of script in words */
+    u32 script[0];                              /* Relocated SCSI script */
+
+};
+
+#define SCSI_IRQ_NONE   255
+#define DMA_NONE        255
+#define IRQ_AUTO        254
+#define DMA_AUTO        254
+
+#define BOARD_GENERIC   0
+
+#define NCR53c7x0_insn_size(insn)                                       \
+    (((insn) & DCMD_TYPE_MASK) == DCMD_TYPE_MMI ? 3 : 2)
+    
+
+#define NCR53c7x0_local_declare()                                       \
+    volatile unsigned char *NCR53c7x0_address_memory;                   \
+    unsigned int NCR53c7x0_address_io;                                  \
+    int NCR53c7x0_memory_mapped
+
+#define NCR53c7x0_local_setup(host)                                     \
+    NCR53c7x0_address_memory = (void *) (host)->base;                   \
+    NCR53c7x0_address_io = (unsigned int) (host)->io_port;              \
+    NCR53c7x0_memory_mapped = ((struct NCR53c7x0_hostdata *)            \
+        host->hostdata[0])-> options & OPTION_MEMORY_MAPPED 
+
+#ifdef BIG_ENDIAN
+/* These could be more efficient, given that we are always memory mapped,
+ * but they don't give the same problems as the write macros, so leave
+ * them. */
+#ifdef __mc68000__
+#define NCR53c7x0_read8(address)                                        \
+    ((unsigned int)raw_inb((u32)NCR53c7x0_address_memory + ((u32)(address)^3)) )
+
+#define NCR53c7x0_read16(address)                                       \
+    ((unsigned int)raw_inw((u32)NCR53c7x0_address_memory + ((u32)(address)^2)))
+#else
+#define NCR53c7x0_read8(address)                                        \
+    (NCR53c7x0_memory_mapped ?                                          \
+        (unsigned int)readb((u32)NCR53c7x0_address_memory + ((u32)(address)^3)) :       \
+        inb(NCR53c7x0_address_io + (address)))
+
+#define NCR53c7x0_read16(address)                                       \
+    (NCR53c7x0_memory_mapped ?                                          \
+        (unsigned int)readw((u32)NCR53c7x0_address_memory + ((u32)(address)^2)) :       \
+        inw(NCR53c7x0_address_io + (address)))
+#endif /* mc68000 */
+#else
+#define NCR53c7x0_read8(address)                                        \
+    (NCR53c7x0_memory_mapped ?                                          \
+        (unsigned int)readb((u32)NCR53c7x0_address_memory + (u32)(address)) :   \
+        inb(NCR53c7x0_address_io + (address)))
+
+#define NCR53c7x0_read16(address)                                       \
+    (NCR53c7x0_memory_mapped ?                                          \
+        (unsigned int)readw((u32)NCR53c7x0_address_memory + (u32)(address)) :   \
+        inw(NCR53c7x0_address_io + (address)))
+#endif
+
+#ifdef __mc68000__
+#define NCR53c7x0_read32(address)                                       \
+    ((unsigned int) raw_inl((u32)NCR53c7x0_address_memory + (u32)(address)))
+#else
+#define NCR53c7x0_read32(address)                                       \
+    (NCR53c7x0_memory_mapped ?                                          \
+        (unsigned int) readl((u32)NCR53c7x0_address_memory + (u32)(address)) :  \
+        inl(NCR53c7x0_address_io + (address)))
+#endif /* mc68000*/
+
+#ifdef BIG_ENDIAN
+/* If we are big-endian, then we are not Intel, so probably don't have
+ * an i/o map as well as a memory map.  So, let's assume memory mapped.
+ * Also, I am having terrible problems trying to persuade the compiler
+ * not to lay down code which does a read after write for these macros.
+ * If you remove 'volatile' from writeb() and friends it is ok....
+ */
+
+#define NCR53c7x0_write8(address,value)                                 \
+        *(volatile unsigned char *)                                     \
+                ((u32)NCR53c7x0_address_memory + ((u32)(address)^3)) = (value)
+
+#define NCR53c7x0_write16(address,value)                                \
+        *(volatile unsigned short *)                                    \
+                ((u32)NCR53c7x0_address_memory + ((u32)(address)^2)) = (value)
+
+#define NCR53c7x0_write32(address,value)                                \
+        *(volatile unsigned long *)                                     \
+                ((u32)NCR53c7x0_address_memory + ((u32)(address))) = (value)
+
+#else
+
+#define NCR53c7x0_write8(address,value)                                 \
+    (NCR53c7x0_memory_mapped ?                                          \
+     ({writeb((value), (u32)NCR53c7x0_address_memory + (u32)(address)); mb();}) :       \
+        outb((value), NCR53c7x0_address_io + (address)))
+
+#define NCR53c7x0_write16(address,value)                                \
+    (NCR53c7x0_memory_mapped ?                                          \
+     ({writew((value), (u32)NCR53c7x0_address_memory + (u32)(address)); mb();}) :       \
+        outw((value), NCR53c7x0_address_io + (address)))
+
+#define NCR53c7x0_write32(address,value)                                \
+    (NCR53c7x0_memory_mapped ?                                          \
+     ({writel((value), (u32)NCR53c7x0_address_memory + (u32)(address)); mb();}) :       \
+        outl((value), NCR53c7x0_address_io + (address)))
+
+#endif
+
+/* Patch arbitrary 32 bit words in the script */
+#define patch_abs_32(script, offset, symbol, value)                     \
+        for (i = 0; i < (sizeof (A_##symbol##_used) / sizeof            \
+            (u32)); ++i) {                                      \
+            (script)[A_##symbol##_used[i] - (offset)] += (value);       \
+            if (hostdata->options & OPTION_DEBUG_FIXUP)                 \
+              printk("scsi%d : %s reference %d at 0x%x in %s is now 0x%x\n",\
+                host->host_no, #symbol, i, A_##symbol##_used[i] -       \
+                (int)(offset), #script, (script)[A_##symbol##_used[i] - \
+                (offset)]);                                             \
+        }
+
+/* Patch read/write instruction immediate field */
+#define patch_abs_rwri_data(script, offset, symbol, value)              \
+        for (i = 0; i < (sizeof (A_##symbol##_used) / sizeof            \
+            (u32)); ++i)                                        \
+            (script)[A_##symbol##_used[i] - (offset)] =                 \
+                ((script)[A_##symbol##_used[i] - (offset)] &            \
+                ~DBC_RWRI_IMMEDIATE_MASK) |                             \
+                (((value) << DBC_RWRI_IMMEDIATE_SHIFT) &                \
+                 DBC_RWRI_IMMEDIATE_MASK)
+
+/* Patch transfer control instruction data field */
+#define patch_abs_tci_data(script, offset, symbol, value)               \
+        for (i = 0; i < (sizeof (A_##symbol##_used) / sizeof            \
+            (u32)); ++i)                                        \
+            (script)[A_##symbol##_used[i] - (offset)] =                 \
+                ((script)[A_##symbol##_used[i] - (offset)] &            \
+                ~DBC_TCI_DATA_MASK) |                                   \
+                (((value) << DBC_TCI_DATA_SHIFT) &                      \
+                 DBC_TCI_DATA_MASK)
+
+/* Patch field in dsa structure (assignment should be +=?) */
+#define patch_dsa_32(dsa, symbol, word, value)                          \
+        {                                                               \
+        (dsa)[(hostdata->##symbol - hostdata->dsa_start) / sizeof(u32)  \
+            + (word)] = (value);                                        \
+        if (hostdata->options & OPTION_DEBUG_DSA)                       \
+            printk("scsi : dsa %s symbol %s(%d) word %d now 0x%x\n",    \
+                #dsa, #symbol, hostdata->##symbol,                      \
+                (word), (u32) (value));                                 \
+        }
+
+/* Paranoid people could use panic() here. */
+#define FATAL(host) shutdown((host));
+
+extern int ncr53c7xx_init(Scsi_Host_Template *tpnt, int board, int chip,
+                          unsigned long base, int io_port, int irq, int dma,
+                          long long options, int clock);
+
+#endif /* NCR53c710_C */
+#endif /* NCR53c710_H */