/*
* Aic7xxx register and scratch ram definitions.
*
* Copyright (c) 1994-2001 Justin T. Gibbs.
* Copyright (c) 2000-2001 Adaptec Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* substantially similar to the "NO WARRANTY" disclaimer below
* ("Disclaimer") and any redistribution must be conditioned upon
* including a substantially similar Disclaimer requirement for further
* binary redistribution.
* 3. Neither the names of the above-listed copyright holders nor the names
* of any contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*
* $FreeBSD: /repoman/r/ncvs/src/sys/dev/aic7xxx/aic7xxx.reg,v 1.43 2003/01/20 20:44:55 gibbs Exp $
*/
VERSION = "$NetBSD: aic7xxx.reg,v 1.8 2025/08/18 20:59:56 andvar Exp $"
/*
* This file is processed by the aic7xxx_asm utility for use in assembling
* firmware for the aic7xxx family of SCSI host adapters as well as to generate
* a C header file for use in the kernel portion of the Aic7xxx driver.
*
* All page numbers refer to the Adaptec AIC-7770 Data Book available from
* Adaptec's Technical Documents Department 1-800-934-2766
*/
/*
* SCSI Sequence Control (p. 3-11).
* Each bit, when set starts a specific SCSI sequence on the bus
*/
register SCSISEQ {
address 0x000
access_mode RW
field TEMODE 0x80
field ENSELO 0x40
field ENSELI 0x20
field ENRSELI 0x10
field ENAUTOATNO 0x08
field ENAUTOATNI 0x04
field ENAUTOATNP 0x02
field SCSIRSTO 0x01
}
/*
* SCSI Transfer Control 0 Register (pp. 3-13).
* Controls the SCSI module data path.
*/
register SXFRCTL0 {
address 0x001
access_mode RW
field DFON 0x80
field DFPEXP 0x40
field FAST20 0x20
field CLRSTCNT 0x10
field SPIOEN 0x08
field SCAMEN 0x04
field CLRCHN 0x02
}
/*
* SCSI Transfer Control 1 Register (pp. 3-14,15).
* Controls the SCSI module data path.
*/
register SXFRCTL1 {
address 0x002
access_mode RW
field BITBUCKET 0x80
field SWRAPEN 0x40
field ENSPCHK 0x20
mask STIMESEL 0x18
field ENSTIMER 0x04
field ACTNEGEN 0x02
field STPWEN 0x01 /* Powered Termination */
}
/*
* SCSI Control Signal Read Register (p. 3-15).
* Reads the actual state of the SCSI bus pins
*/
register SCSISIGI {
address 0x003
access_mode RO
field CDI 0x80
field IOI 0x40
field MSGI 0x20
field ATNI 0x10
field SELI 0x08
field BSYI 0x04
field REQI 0x02
field ACKI 0x01
/*
* Possible phases in SCSISIGI
*/
mask PHASE_MASK CDI|IOI|MSGI
mask P_DATAOUT 0x00
mask P_DATAIN IOI
mask P_DATAOUT_DT P_DATAOUT|MSGI
mask P_DATAIN_DT P_DATAIN|MSGI
mask P_COMMAND CDI
mask P_MESGOUT CDI|MSGI
mask P_STATUS CDI|IOI
mask P_MESGIN CDI|IOI|MSGI
}
/*
* SCSI Control Signal Write Register (p. 3-16).
* Writing to this register modifies the control signals on the bus. Only
* those signals that are allowed in the current mode (Initiator/Target) are
* asserted.
*/
register SCSISIGO {
address 0x003
access_mode WO
field CDO 0x80
field IOO 0x40
field MSGO 0x20
field ATNO 0x10
field SELO 0x08
field BSYO 0x04
field REQO 0x02
field ACKO 0x01
/*
* Possible phases to write into SCSISIG0
*/
mask PHASE_MASK CDI|IOI|MSGI
mask P_DATAOUT 0x00
mask P_DATAIN IOI
mask P_COMMAND CDI
mask P_MESGOUT CDI|MSGI
mask P_STATUS CDI|IOI
mask P_MESGIN CDI|IOI|MSGI
}
/*
* SCSI Rate Control (p. 3-17).
* Contents of this register determine the Synchronous SCSI data transfer
* rate and the maximum synchronous Req/Ack offset. An offset of 0 in the
* SOFS (3:0) bits disables synchronous data transfers. Any offset value
* greater than 0 enables synchronous transfers.
*/
register SCSIRATE {
address 0x004
access_mode RW
field WIDEXFER 0x80 /* Wide transfer control */
field ENABLE_CRC 0x40 /* CRC for D-Phases */
field SINGLE_EDGE 0x10 /* Disable DT Transfers */
mask SXFR 0x70 /* Sync transfer rate */
mask SXFR_ULTRA2 0x0f /* Sync transfer rate */
mask SOFS 0x0f /* Sync offset */
}
/*
* SCSI ID (p. 3-18).
* Contains the ID of the board and the current target on the
* selected channel.
*/
register SCSIID {
address 0x005
access_mode RW
mask TID 0xf0 /* Target ID mask */
mask TWIN_TID 0x70
field TWIN_CHNLB 0x80
mask OID 0x0f /* Our ID mask */
/*
* SCSI Maximum Offset (p. 4-61 aic7890/91 Data Book)
* The aic7890/91 allow an offset of up to 127 transfers in both wide
* and narrow mode.
*/
alias SCSIOFFSET
mask SOFS_ULTRA2 0x7f /* Sync offset U2 chips */
}
/*
* SCSI Latched Data (p. 3-19).
* Read/Write latches used to transfer data on the SCSI bus during
* Automatic or Manual PIO mode. SCSIDATH can be used for the
* upper byte of a 16bit wide asynchronouse data phase transfer.
*/
register SCSIDATL {
address 0x006
access_mode RW
}
/*
* SCSI Transfer Count (pp. 3-19,20)
* These registers count down the number of bytes transferred
* across the SCSI bus. The counter is decremented only once
* the data has been safely transferred. SDONE in SSTAT0 is
* set when STCNT goes to 0
*/
register STCNT {
address 0x008
size 3
access_mode RW
}
/* ALT_MODE registers (Ultra2 and Ultra160 chips) */
register SXFRCTL2 {
address 0x013
access_mode RW
field AUTORSTDIS 0x10
field CMDDMAEN 0x08
mask ASYNC_SETUP 0x07
}
/* ALT_MODE register on Ultra160 chips */
register OPTIONMODE {
address 0x008
access_mode RW
field AUTORATEEN 0x80
field AUTOACKEN 0x40
field ATNMGMNTEN 0x20
field BUSFREEREV 0x10
field EXPPHASEDIS 0x08
field SCSIDATL_IMGEN 0x04
field AUTO_MSGOUT_DE 0x02
field DIS_MSGIN_DUALEDGE 0x01
mask OPTIONMODE_DEFAULTS AUTO_MSGOUT_DE|DIS_MSGIN_DUALEDGE
}
/*
* Clear SCSI Interrupt 0 (p. 3-20)
* Writing a 1 to a bit clears the associated SCSI Interrupt in SSTAT0.
*/
register CLRSINT0 {
address 0x00b
access_mode WO
field CLRSELDO 0x40
field CLRSELDI 0x20
field CLRSELINGO 0x10
field CLRSWRAP 0x08
field CLRIOERR 0x08 /* Ultra2 Only */
field CLRSPIORDY 0x02
}
/*
* SCSI Status 0 (p. 3-21)
* Contains one set of SCSI Interrupt codes
* These are most likely of interest to the sequencer
*/
register SSTAT0 {
address 0x00b
access_mode RO
field TARGET 0x80 /* Board acting as target */
field SELDO 0x40 /* Selection Done */
field SELDI 0x20 /* Board has been selected */
field SELINGO 0x10 /* Selection In Progress */
field SWRAP 0x08 /* 24bit counter wrap */
field IOERR 0x08 /* LVD Transceiver mode changed */
field SDONE 0x04 /* STCNT = 0x000000 */
field SPIORDY 0x02 /* SCSI PIO Ready */
field DMADONE 0x01 /* DMA transfer completed */
}
/*
* Clear SCSI Interrupt 1 (p. 3-23)
* Writing a 1 to a bit clears the associated SCSI Interrupt in SSTAT1.
*/
register CLRSINT1 {
address 0x00c
access_mode WO
field CLRSELTIMEO 0x80
field CLRATNO 0x40
field CLRSCSIRSTI 0x20
field CLRBUSFREE 0x08
field CLRSCSIPERR 0x04
field CLRPHASECHG 0x02
field CLRREQINIT 0x01
}
/*
* SCSI Status 1 (p. 3-24)
*/
register SSTAT1 {
address 0x00c
access_mode RO
field SELTO 0x80
field ATNTARG 0x40
field SCSIRSTI 0x20
field PHASEMIS 0x10
field BUSFREE 0x08
field SCSIPERR 0x04
field PHASECHG 0x02
field REQINIT 0x01
}
/*
* SCSI Status 2 (pp. 3-25,26)
*/
register SSTAT2 {
address 0x00d
access_mode RO
field OVERRUN 0x80
field SHVALID 0x40 /* Shadow Layer non-zero */
field EXP_ACTIVE 0x10 /* SCSI Expander Active */
field CRCVALERR 0x08 /* CRC doesn't match (U3 only) */
field CRCENDERR 0x04 /* No terminal CRC packet (U3 only) */
field CRCREQERR 0x02 /* Illegal CRC packet req (U3 only) */
field DUAL_EDGE_ERR 0x01 /* Incorrect data phase (U3 only) */
mask SFCNT 0x1f
}
/*
* SCSI ID for the aic7890/91 chips
*/
register SCSIID_ULTRA2 {
address 0x00f
access_mode RW
mask TID 0xf0 /* Target ID mask */
mask OID 0x0f /* Our ID mask */
}
/*
* SCSI Interrupt Mode 1 (p. 3-28)
* Setting any bit will enable the corresponding function
* in SIMODE0 to interrupt via the IRQ pin.
*/
register SIMODE0 {
address 0x010
access_mode RW
field ENSELDO 0x40
field ENSELDI 0x20
field ENSELINGO 0x10
field ENSWRAP 0x08
field ENIOERR 0x08 /* LVD Transceiver mode changes */
field ENSDONE 0x04
field ENSPIORDY 0x02
field ENDMADONE 0x01
}
/*
* SCSI Interrupt Mode 1 (pp. 3-28,29)
* Setting any bit will enable the corresponding function
* in SIMODE1 to interrupt via the IRQ pin.
*/
register SIMODE1 {
address 0x011
access_mode RW
field ENSELTIMO 0x80
field ENATNTARG 0x40
field ENSCSIRST 0x20
field ENPHASEMIS 0x10
field ENBUSFREE 0x08
field ENSCSIPERR 0x04
field ENPHASECHG 0x02
field ENREQINIT 0x01
}
/*
* SCSI Data Bus (High) (p. 3-29)
* This register reads data on the SCSI Data bus directly.
*/
register SCSIBUSL {
address 0x012
access_mode RW
}
/*
* SCSI/Host Address (p. 3-30)
* These registers hold the host address for the byte about to be
* transferred on the SCSI bus. They are counted up in the same
* manner as STCNT is counted down. SHADDR should always be used
* to determine the address of the last byte transferred since HADDR
* can be skewed by write ahead.
*/
register SHADDR {
address 0x014
size 4
access_mode RO
}
/*
* Selection Timeout Timer (p. 3-30)
*/
register SELTIMER {
address 0x018
access_mode RW
field STAGE6 0x20
field STAGE5 0x10
field STAGE4 0x08
field STAGE3 0x04
field STAGE2 0x02
field STAGE1 0x01
alias TARGIDIN
}
/*
* Selection/Reselection ID (p. 3-31)
* Upper four bits are the device id. The ONEBIT is set when the re/selecting
* device did not set its own ID.
*/
register SELID {
address 0x019
access_mode RW
mask SELID_MASK 0xf0
field ONEBIT 0x08
}
register SCAMCTL {
address 0x01a
access_mode RW
field ENSCAMSELO 0x80
field CLRSCAMSELID 0x40
field ALTSTIM 0x20
field DFLTTID 0x10
mask SCAMLVL 0x03
}
/*
* Target Mode Selecting in ID bitmask (aic7890/91/96/97)
*/
register TARGID {
address 0x01b
size 2
access_mode RW
}
/*
* Serial Port I/O Capability register (p. 4-95 aic7860 Data Book)
* Indicates if external logic has been attached to the chip to
* perform the tasks of accessing a serial eeprom, testing termination
* strength, and performing cable detection. On the aic7860, most of
* these features are handled on chip, but on the aic7855 an attached
* aic3800 does the grunt work.
*/
register SPIOCAP {
address 0x01b
access_mode RW
field SOFT1 0x80
field SOFT0 0x40
field SOFTCMDEN 0x20
field EXT_BRDCTL 0x10 /* External Board control */
field SEEPROM 0x08 /* External serial eeprom logic */
field EEPROM 0x04 /* Writable external BIOS ROM */
field ROM 0x02 /* Logic for accessing external ROM */
field SSPIOCPS 0x01 /* Termination and cable detection */
}
register BRDCTL {
address 0x01d
field BRDDAT7 0x80
field BRDDAT6 0x40
field BRDDAT5 0x20
field BRDSTB 0x10
field BRDCS 0x08
field BRDRW 0x04
field BRDCTL1 0x02
field BRDCTL0 0x01
/* 7890 Definitions */
field BRDDAT4 0x10
field BRDDAT3 0x08
field BRDDAT2 0x04
field BRDRW_ULTRA2 0x02
field BRDSTB_ULTRA2 0x01
}
/*
* Serial EEPROM Control (p. 4-92 in 7870 Databook)
* Controls the reading and writing of an external serial 1-bit
* EEPROM Device. In order to access the serial EEPROM, you must
* first set the SEEMS bit that generates a request to the memory
* port for access to the serial EEPROM device. When the memory
* port is not busy servicing another request, it reconfigures
* to allow access to the serial EEPROM. When this happens, SEERDY
* gets set high to verify that the memory port access has been
* granted.
*
* After successful arbitration for the memory port, the SEECS bit of
* the SEECTL register is connected to the chip select. The SEECK,
* SEEDO, and SEEDI are connected to the clock, data out, and data in
* lines respectively. The SEERDY bit of SEECTL is useful in that it
* gives us an 800 nsec timer. After a write to the SEECTL register,
* the SEERDY goes high 800 nsec later. The one exception to this is
* when we first request access to the memory port. The SEERDY goes
* high to signify that access has been granted and, for this case, has
* no implied timing.
*
* See 93cx6.c for detailed information on the protocol necessary to
* read the serial EEPROM.
*/
register SEECTL {
address 0x01e
field EXTARBACK 0x80
field EXTARBREQ 0x40
field SEEMS 0x20
field SEERDY 0x10
field SEECS 0x08
field SEECK 0x04
field SEEDO 0x02
field SEEDI 0x01
}
/*
* SCSI Block Control (p. 3-32)
* Controls Bus type and channel selection. In a twin channel configuration
* addresses 0x00-0x1e are gated to the appropriate channel based on this
* register. SELWIDE allows for the coexistence of 8bit and 16bit devices
* on a wide bus.
*/
register SBLKCTL {
address 0x01f
access_mode RW
field DIAGLEDEN 0x80 /* Aic78X0 only */
field DIAGLEDON 0x40 /* Aic78X0 only */
field AUTOFLUSHDIS 0x20
field SELBUSB 0x08
field ENAB40 0x08 /* LVD transceiver active */
field ENAB20 0x04 /* SE/HVD transceiver active */
field SELWIDE 0x02
field XCVR 0x01 /* External transceiver active */
}
/*
* Sequencer Control (p. 3-33)
* Error detection mode and speed configuration
*/
register SEQCTL {
address 0x060
access_mode RW
field PERRORDIS 0x80
field PAUSEDIS 0x40
field FAILDIS 0x20
field FASTMODE 0x10
field BRKADRINTEN 0x08
field STEP 0x04
field SEQRESET 0x02
field LOADRAM 0x01
}
/*
* Sequencer RAM Data (p. 3-34)
* Single byte window into the Scratch Ram area starting at the address
* specified by SEQADDR0 and SEQADDR1. To write a full word, simply write
* four bytes in succession. The SEQADDRs will increment after the most
* significant byte is written
*/
register SEQRAM {
address 0x061
access_mode RW
}
/*
* Sequencer Address Registers (p. 3-35)
* Only the first bit of SEQADDR1 holds addressing information
*/
register SEQADDR0 {
address 0x062
access_mode RW
}
/*
* Accumulator
* We cheat by passing arguments in the Accumulator up to the kernel driver
*/
register ACCUM {
address 0x064
access_mode RW
accumulator
}
/*
* Host Control (p. 3-47) R/W
* Overall host control of the device.
*/
register HCNTRL {
address 0x087
access_mode RW
field POWRDN 0x40
field SWINT 0x10
field IRQMS 0x08
field PAUSE 0x04
field INTEN 0x02
field CHIPRST 0x01
field CHIPRSTACK 0x01
}
/*
* Host Address (p. 3-48)
* This register contains the address of the byte about
* to be transferred across the host bus.
*/
register HADDR {
address 0x088
size 4
access_mode RW
}
/*
* SCB Pointer (p. 3-49)
* Gate one of the SCBs into the SCBARRAY window.
*/
register SCBPTR {
address 0x090
access_mode RW
}
/*
* Interrupt Status (p. 3-50)
* Status for system interrupts
*/
register INTSTAT {
address 0x091
access_mode RW
field BRKADRINT 0x08
field SCSIINT 0x04
field CMDCMPLT 0x02
field SEQINT 0x01
mask BAD_PHASE SEQINT /* unknown scsi bus phase */
mask SEND_REJECT 0x10|SEQINT /* sending a message reject */
mask PROTO_VIOLATION 0x20|SEQINT /* SCSI protocol violation */
mask NO_MATCH 0x30|SEQINT /* no cmd match for reconnect */
mask IGN_WIDE_RES 0x40|SEQINT /* Complex IGN Wide Res Msg */
mask PDATA_REINIT 0x50|SEQINT /*
* Returned to data phase
* that requires data
* transfer pointers to be
* recalculated from the
* transfer residual.
*/
mask HOST_MSG_LOOP 0x60|SEQINT /*
* The bus is ready for the
* host to perform another
* message transaction. This
* mechanism is used for things
* like sync/wide negotiation
* that require a kernel based
* message state engine.
*/
mask BAD_STATUS 0x70|SEQINT /* Bad status from target */
mask PERR_DETECTED 0x80|SEQINT /*
* Either the phase_lock
* or inb_next routine has
* noticed a parity error.
*/
mask DATA_OVERRUN 0x90|SEQINT /*
* Target attempted to write
* beyond the bounds of its
* command.
*/
mask MKMSG_FAILED 0xa0|SEQINT /*
* Target completed command
* without honoring our ATN
* request to issue a message.
*/
mask MISSED_BUSFREE 0xb0|SEQINT /*
* The sequencer never saw
* the bus go free after
* either a command complete
* or disconnect message.
*/
mask SCB_MISMATCH 0xc0|SEQINT /*
* Downloaded SCB's tag does
* not match the entry we
* intended to download.
*/
mask NO_FREE_SCB 0xd0|SEQINT /*
* get_free_or_disc_scb failed.
*/
mask OUT_OF_RANGE 0xe0|SEQINT
/*
* Hard Error (p. 3-53)
* Reporting of catastrophic errors. You usually cannot recover from
* these without a full board reset.
*/
register ERROR {
address 0x092
access_mode RO
field CIOPARERR 0x80 /* Ultra2 only */
field PCIERRSTAT 0x40 /* PCI only */
field MPARERR 0x20 /* PCI only */
field DPARERR 0x10 /* PCI only */
field SQPARERR 0x08
field ILLOPCODE 0x04
field ILLSADDR 0x02
field ILLHADDR 0x01
}
/*
* Clear Interrupt Status (p. 3-52)
*/
register CLRINT {
address 0x092
access_mode WO
field CLRPARERR 0x10 /* PCI only */
field CLRBRKADRINT 0x08
field CLRSCSIINT 0x04
field CLRCMDINT 0x02
field CLRSEQINT 0x01
}
register DFCNTRL {
address 0x093
access_mode RW
field PRELOADEN 0x80 /* aic7890 only */
field WIDEODD 0x40
field SCSIEN 0x20
field SDMAEN 0x10
field SDMAENACK 0x10
field HDMAEN 0x08
field HDMAENACK 0x08
field DIRECTION 0x04
field FIFOFLUSH 0x02
field FIFORESET 0x01
}
register DFSTATUS {
address 0x094
access_mode RO
field PRELOAD_AVAIL 0x80
field DFCACHETH 0x40
field FIFOQWDEMP 0x20
field MREQPEND 0x10
field HDONE 0x08
field DFTHRESH 0x04
field FIFOFULL 0x02
field FIFOEMP 0x01
}
register DFWADDR {
address 0x95
access_mode RW
}
register DFRADDR {
address 0x97
access_mode RW
}
register DFDAT {
address 0x099
access_mode RW
}
/*
* SCB Auto Increment (p. 3-59)
* Byte offset into the SCB Array and an optional bit to allow auto
* incrementing of the address during download and upload operations
*/
register SCBCNT {
address 0x09a
access_mode RW
field SCBAUTO 0x80
mask SCBCNT_MASK 0x1f
}
/*
* Queue In FIFO (p. 3-60)
* Input queue for queued SCBs (commands that the sequencer has yet to start)
*/
register QINFIFO {
address 0x09b
access_mode RW
}
/*
* Queue In Count (p. 3-60)
* Number of queued SCBs
*/
register QINCNT {
address 0x09c
access_mode RO
}
/*
* Queue Out FIFO (p. 3-61)
* Queue of SCBs that have completed and await the host
*/
register QOUTFIFO {
address 0x09d
access_mode WO
}
register CRCCONTROL1 {
address 0x09d
access_mode RW
field CRCONSEEN 0x80
field CRCVALCHKEN 0x40
field CRCENDCHKEN 0x20
field CRCREQCHKEN 0x10
field TARGCRCENDEN 0x08
field TARGCRCCNTEN 0x04
}
/*
* Queue Out Count (p. 3-61)
* Number of queued SCBs in the Out FIFO
*/
register QOUTCNT {
address 0x09e
access_mode RO
}
register SCSIPHASE {
address 0x09e
access_mode RO
field STATUS_PHASE 0x20
field COMMAND_PHASE 0x10
field MSG_IN_PHASE 0x08
field MSG_OUT_PHASE 0x04
field DATA_IN_PHASE 0x02
field DATA_OUT_PHASE 0x01
mask DATA_PHASE_MASK 0x03
}
/*
* Special Function
*/
register SFUNCT {
address 0x09f
access_mode RW
field ALT_MODE 0x80
}
register CCSGCTL {
address 0x0EB
field CCSGDONE 0x80
field CCSGEN 0x08
field SG_FETCH_NEEDED 0x02 /* Bit used for software state */
field CCSGRESET 0x01
}
register CCSCBCNT {
address 0xEF
}
register CCSCBCTL {
address 0x0EE
field CCSCBDONE 0x80
field ARRDONE 0x40 /* SCB Array prefetch done */
field CCARREN 0x10
field CCSCBEN 0x08
field CCSCBDIR 0x04
field CCSCBRESET 0x01
}
register SG_CACHE_PRE {
access_mode WO
address 0x0fc
mask SG_ADDR_MASK 0xf8
field ODD_SEG 0x04
field LAST_SEG 0x02
field LAST_SEG_DONE 0x01
}
register SG_CACHE_SHADOW {
access_mode RO
address 0x0fc
mask SG_ADDR_MASK 0xf8
field ODD_SEG 0x04
field LAST_SEG 0x02
field LAST_SEG_DONE 0x01
}
/* ---------------------- Scratch RAM Offsets ------------------------- */
/* These offsets are either to values that are initialized by the board's
* BIOS or are specified by the sequencer code.
*
* The host adapter card (at least the BIOS) uses 20-2f for SCSI
* device information, 32-33 and 5a-5f as well. As it turns out, the
* BIOS trashes 20-2f, writing the synchronous negotiation results
* on top of the BIOS values, so we re-use those for our per-target
* scratchspace (actually a value that can be copied directly into
* SCSIRATE). The kernel driver will enable synchronous negotiation
* for all targets that have a value other than 0 in the lower four
* bits of the target scratch space. This should work regardless of
* whether the bios has been installed.
*/
scratch_ram {
address 0x020
size 58
/*
* 1 byte per target starting at this address for configuration values
*/
BUSY_TARGETS {
alias TARG_SCSIRATE
size 16
}
/*
* Bit vector of targets that have ULTRA enabled as set by
* the BIOS. The Sequencer relies on a per-SCB field to
* control whether to enable Ultra transfers or not. During
* initialization, we read this field and reuse it for 2
* entries in the busy target table.
*/
ULTRA_ENB {
alias CMDSIZE_TABLE
size 2
}
/*
* Bit vector of targets that have disconnection disabled as set by
* the BIOS. The Sequencer relies in a per-SCB field to control the
* disconnect priveldge. During initialization, we read this field
* and reuse it for 2 entries in the busy target table.
*/
DISC_DSB {
size 2
}
CMDSIZE_TABLE_TAIL {
size 4
}
/*
* Partial transfer past cacheline end to be
* transferred using an extra S/G.
*/
MWI_RESIDUAL {
size 1
alias TARG_IMMEDIATE_SCB
}
/*
* SCBID of the next SCB to be started by the controller.
*/
NEXT_QUEUED_SCB {
size 1
}
/*
* Single byte buffer used to designate the type or message
* to send to a target.
*/
MSG_OUT {
size 1
}
/* Parameters for DMA Logic */
DMAPARAMS {
size 1
field PRELOADEN 0x80
field WIDEODD 0x40
field SCSIEN 0x20
field SDMAEN 0x10
field SDMAENACK 0x10
field HDMAEN 0x08
field HDMAENACK 0x08
field DIRECTION 0x04 /* Set indicates PCI->SCSI */
field FIFOFLUSH 0x02
field FIFORESET 0x01
}
SEQ_FLAGS {
size 1
field NOT_IDENTIFIED 0x80
field NO_CDB_SENT 0x40
field TARGET_CMD_IS_TAGGED 0x40
field DPHASE 0x20
/* Target flags */
field TARG_CMD_PENDING 0x10
field CMDPHASE_PENDING 0x08
field DPHASE_PENDING 0x04
field SPHASE_PENDING 0x02
field NO_DISCONNECT 0x01
}
/*
* Temporary storage for the
* target/channel/lun of a
* reconnecting target
*/
SAVED_SCSIID {
size 1
}
SAVED_LUN {
size 1
}
/*
* The last bus phase as seen by the sequencer.
*/
LASTPHASE {
size 1
field CDI 0x80
field IOI 0x40
field MSGI 0x20
mask PHASE_MASK CDI|IOI|MSGI
mask P_DATAOUT 0x00
mask P_DATAIN IOI
mask P_COMMAND CDI
mask P_MESGOUT CDI|MSGI
mask P_STATUS CDI|IOI
mask P_MESGIN CDI|IOI|MSGI
mask P_BUSFREE 0x01
}
/*
* head of list of SCBs awaiting
* selection
*/
WAITING_SCBH {
size 1
}
/*
* head of list of SCBs that are
* disconnected. Used for SCB
* paging.
*/
DISCONNECTED_SCBH {
size 1
}
/*
* head of list of SCBs that are
* not in use. Used for SCB paging.
*/
FREE_SCBH {
size 1
}
/*
* head of list of SCBs that have
* completed but have not been
* put into the qoutfifo.
*/
COMPLETE_SCBH {
size 1
}
/*
* Address of the hardware scb array in the host.
*/
HSCB_ADDR {
size 4
}
/*
* Base address of our shared data with the kernel driver in host
* memory. This includes the qoutfifo and target mode
* incoming command queue.
*/
SHARED_DATA_ADDR {
size 4
}
KERNEL_QINPOS {
size 1
}
QINPOS {
size 1
}
QOUTPOS {
size 1
}
/*
* Kernel and sequencer offsets into the queue of
* incoming target mode command descriptors. The
* queue is full when the KERNEL_TQINPOS == TQINPOS.
*/
KERNEL_TQINPOS {
size 1
}
TQINPOS {
size 1
}
ARG_1 {
size 1
mask SEND_MSG 0x80
mask SEND_SENSE 0x40
mask SEND_REJ 0x20
mask MSGOUT_PHASEMIS 0x10
mask EXIT_MSG_LOOP 0x08
mask CONT_MSG_LOOP 0x04
mask CONT_TARG_SESSION 0x02
alias RETURN_1
}
ARG_2 {
size 1
alias RETURN_2
}
/*
* Snapshot of MSG_OUT taken after each message is sent.
*/
LAST_MSG {
size 1
}
/*
* Sequences the kernel driver has okayed for us. This allows
* the driver to do things like prevent initiator or target
* operations.
*/
SCSISEQ_TEMPLATE {
size 1
field ENSELO 0x40
field ENSELI 0x20
field ENRSELI 0x10
field ENAUTOATNO 0x08
field ENAUTOATNI 0x04
field ENAUTOATNP 0x02
}
/*
* Track whether the transfer byte count for
* the current data phase is odd.
*/
DATA_COUNT_ODD {
size 1
}
}
scratch_ram {
address 0x056
size 4
/*
* These scratch ram locations are initialized by the 274X BIOS.
* We reuse them after capturing the BIOS settings during
* initialization.
*/
/*
* The initiator specified tag for this target mode transaction.
*/
HA_274_BIOSGLOBAL {
size 1
field HA_274_EXTENDED_TRANS 0x01
alias INITIATOR_TAG
}
SEQ_FLAGS2 {
size 1
field SCB_DMA 0x01
field TARGET_MSG_PENDING 0x02
}
}
scratch_ram {
address 0x05a
size 6
/*
* These are reserved registers in the card's scratch ram on the 2742.
* The EISA configuration chip is mapped here. On Rev E. of the
* aic7770, the sequencer can use this area for scratch, but the
* host cannot directly access these registers. On later chips, this
* area can be read and written by both the host and the sequencer.
* Even on later chips, many of these locations are initialized by
* the BIOS.
*/
SCSICONF {
size 1
field TERM_ENB 0x80
field RESET_SCSI 0x40
field ENSPCHK 0x20
mask HSCSIID 0x07 /* our SCSI ID */
mask HWSCSIID 0x0f /* our SCSI ID if Wide Bus */
}
INTDEF {
address 0x05c
size 1
field EDGE_TRIG 0x80
mask VECTOR 0x0f
}
HOSTCONF {
address 0x05d
size 1
}
HA_274_BIOSCTRL {
address 0x05f
size 1
mask BIOSMODE 0x30
mask BIOSDISABLED 0x30
field CHANNEL_B_PRIMARY 0x08
}
}
scratch_ram {
address 0x070
size 16
/*
* Per target SCSI offset values for Ultra2 controllers.
*/
TARG_OFFSET {
size 16
}
}
