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mirror of https://git.FreeBSD.org/src.git synced 2024-12-30 12:04:07 +00:00
freebsd/sys/dev/aic7xxx/aic7xxx.reg
2000-09-16 20:59:12 +00:00

1491 lines
30 KiB
Reg

/*
* Aic7xxx register and scratch ram definitions.
*
* Copyright (c) 1994-2000 Justin Gibbs.
* 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. The name of the author may not 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 Public License ("GPL").
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id$
*
* $FreeBSD$
*/
/*
* 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
bit TEMODE 0x80
bit ENSELO 0x40
bit ENSELI 0x20
bit ENRSELI 0x10
bit ENAUTOATNO 0x08
bit ENAUTOATNI 0x04
bit ENAUTOATNP 0x02
bit SCSIRSTO 0x01
}
/*
* SCSI Transfer Control 0 Register (pp. 3-13).
* Controls the SCSI module data path.
*/
register SXFRCTL0 {
address 0x001
access_mode RW
bit DFON 0x80
bit DFPEXP 0x40
bit FAST20 0x20
bit CLRSTCNT 0x10
bit SPIOEN 0x08
bit SCAMEN 0x04
bit CLRCHN 0x02
}
/*
* SCSI Transfer Control 1 Register (pp. 3-14,15).
* Controls the SCSI module data path.
*/
register SXFRCTL1 {
address 0x002
access_mode RW
bit BITBUCKET 0x80
bit SWRAPEN 0x40
bit ENSPCHK 0x20
mask STIMESEL 0x18
bit ENSTIMER 0x04
bit ACTNEGEN 0x02
bit 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
bit CDI 0x80
bit IOI 0x40
bit MSGI 0x20
bit ATNI 0x10
bit SELI 0x08
bit BSYI 0x04
bit REQI 0x02
bit 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
bit CDO 0x80
bit IOO 0x40
bit MSGO 0x20
bit ATNO 0x10
bit SELO 0x08
bit BSYO 0x04
bit REQO 0x02
bit 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
bit WIDEXFER 0x80 /* Wide transfer control */
bit ENABLE_CRC 0x40 /* CRC for D-Phases */
bit 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
bit 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
}
register SCSIDATH {
address 0x007
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 register on Ultra160 chips */
register OPTIONMODE {
address 0x008
access_mode RW
bit AUTORATEEN 0x80
bit AUTOACKEN 0x40
bit ATNMGMNTEN 0x20
bit BUSFREEREV 0x10
bit EXPPHASEDIS 0x08
bit SCSIDATL_IMGEN 0x04
bit AUTO_MSGOUT_DE 0x02
bit DIS_MSGIN_DUALEDGE 0x01
mask OPTIONMODE_DEFAULTS AUTO_MSGOUT_DE|DIS_MSGIN_DUALEDGE
}
/* ALT_MODE register on Ultra160 chips */
register TARGCRCCNT {
address 0x00a
size 2
access_mode RW
}
/*
* 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
bit CLRSELDO 0x40
bit CLRSELDI 0x20
bit CLRSELINGO 0x10
bit CLRSWRAP 0x08
bit 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
bit TARGET 0x80 /* Board acting as target */
bit SELDO 0x40 /* Selection Done */
bit SELDI 0x20 /* Board has been selected */
bit SELINGO 0x10 /* Selection In Progress */
bit SWRAP 0x08 /* 24bit counter wrap */
bit IOERR 0x08 /* LVD Tranceiver mode changed */
bit SDONE 0x04 /* STCNT = 0x000000 */
bit SPIORDY 0x02 /* SCSI PIO Ready */
bit 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
bit CLRSELTIMEO 0x80
bit CLRATNO 0x40
bit CLRSCSIRSTI 0x20
bit CLRBUSFREE 0x08
bit CLRSCSIPERR 0x04
bit CLRPHASECHG 0x02
bit CLRREQINIT 0x01
}
/*
* SCSI Status 1 (p. 3-24)
*/
register SSTAT1 {
address 0x00c
access_mode RO
bit SELTO 0x80
bit ATNTARG 0x40
bit SCSIRSTI 0x20
bit PHASEMIS 0x10
bit BUSFREE 0x08
bit SCSIPERR 0x04
bit PHASECHG 0x02
bit REQINIT 0x01
}
/*
* SCSI Status 2 (pp. 3-25,26)
*/
register SSTAT2 {
address 0x00d
access_mode RO
bit OVERRUN 0x80
bit SHVALID 0x40 /* Shaddow Layer non-zero */
bit EXP_ACTIVE 0x10 /* SCSI Expander Active */
bit CRCVALERR 0x08 /* CRC doesn't match (U3 only) */
bit CRCENDERR 0x04 /* No terminal CRC packet (U3 only) */
bit CRCREQERR 0x02 /* Illegal CRC packet req (U3 only) */
bit DUAL_EDGE_ERR 0x01 /* Incorrect data phase (U3 only) */
mask SFCNT 0x1f
}
/*
* SCSI Status 3 (p. 3-26)
*/
register SSTAT3 {
address 0x00e
access_mode RO
mask SCSICNT 0xf0
mask OFFCNT 0x0f
}
/*
* 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
bit ENSELDO 0x40
bit ENSELDI 0x20
bit ENSELINGO 0x10
bit ENSWRAP 0x08
bit ENIOERR 0x08 /* LVD Tranceiver mode changes */
bit ENSDONE 0x04
bit ENSPIORDY 0x02
bit 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
bit ENSELTIMO 0x80
bit ENATNTARG 0x40
bit ENSCSIRST 0x20
bit ENPHASEMIS 0x10
bit ENBUSFREE 0x08
bit ENSCSIPERR 0x04
bit ENPHASECHG 0x02
bit 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 RO
}
register SCSIBUSH {
address 0x013
access_mode RO
}
/*
* 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
bit STAGE6 0x20
bit STAGE5 0x10
bit STAGE4 0x08
bit STAGE3 0x04
bit STAGE2 0x02
bit 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
bit ONEBIT 0x08
}
register SCAMCTL {
address 0x01a
access_mode RW
bit ENSCAMSELO 0x80
bit CLRSCAMSELID 0x40
bit ALTSTIM 0x20
bit 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 Cabability 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
bit SOFT1 0x80
bit SOFT0 0x40
bit SOFTCMDEN 0x20
bit HAS_BRDCTL 0x10 /* External Board control */
bit SEEPROM 0x08 /* External serial eeprom logic */
bit EEPROM 0x04 /* Writable external BIOS ROM */
bit ROM 0x02 /* Logic for accessing external ROM */
bit SSPIOCPS 0x01 /* Termination and cable detection */
}
register BRDCTL {
address 0x01d
bit BRDDAT7 0x80
bit BRDDAT6 0x40
bit BRDDAT5 0x20
bit BRDSTB 0x10
bit BRDCS 0x08
bit BRDRW 0x04
bit BRDCTL1 0x02
bit BRDCTL0 0x01
/* 7890 Definitions */
bit BRDDAT4 0x10
bit BRDDAT3 0x08
bit BRDDAT2 0x04
bit BRDRW_ULTRA2 0x02
bit 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
bit EXTARBACK 0x80
bit EXTARBREQ 0x40
bit SEEMS 0x20
bit SEERDY 0x10
bit SEECS 0x08
bit SEECK 0x04
bit SEEDO 0x02
bit 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
bit DIAGLEDEN 0x80 /* Aic78X0 only */
bit DIAGLEDON 0x40 /* Aic78X0 only */
bit AUTOFLUSHDIS 0x20
bit SELBUSB 0x08
bit ENAB40 0x08 /* LVD transceiver active */
bit ENAB20 0x04 /* SE/HVD transceiver active */
bit SELWIDE 0x02
bit XCVR 0x01 /* External transceiver active */
}
/*
* Sequencer Control (p. 3-33)
* Error detection mode and speed configuration
*/
register SEQCTL {
address 0x060
access_mode RW
bit PERRORDIS 0x80
bit PAUSEDIS 0x40
bit FAILDIS 0x20
bit FASTMODE 0x10
bit BRKADRINTEN 0x08
bit STEP 0x04
bit SEQRESET 0x02
bit 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
}
register SEQADDR1 {
address 0x063
access_mode RW
mask SEQADDR1_MASK 0x01
}
/*
* Accumulator
* We cheat by passing arguments in the Accumulator up to the kernel driver
*/
register ACCUM {
address 0x064
access_mode RW
accumulator
}
register SINDEX {
address 0x065
access_mode RW
sindex
}
register DINDEX {
address 0x066
access_mode RW
}
register ALLONES {
address 0x069
access_mode RO
allones
}
register ALLZEROS {
address 0x06a
access_mode RO
allzeros
}
register NONE {
address 0x06a
access_mode WO
none
}
register FLAGS {
address 0x06b
access_mode RO
bit ZERO 0x02
bit CARRY 0x01
}
register SINDIR {
address 0x06c
access_mode RO
}
register DINDIR {
address 0x06d
access_mode WO
}
register FUNCTION1 {
address 0x06e
access_mode RW
}
register STACK {
address 0x06f
access_mode RO
}
/*
* Board Control (p. 3-43)
*/
register BCTL {
address 0x084
access_mode RW
bit ACE 0x08
bit ENABLE 0x01
}
/*
* On the aic78X0 chips, Board Control is replaced by the DSCommand
* register (p. 4-64)
*/
register DSCOMMAND0 {
address 0x084
access_mode RW
bit CACHETHEN 0x80 /* Cache Threshold enable */
bit DPARCKEN 0x40 /* Data Parity Check Enable */
bit MPARCKEN 0x20 /* Memory Parity Check Enable */
bit EXTREQLCK 0x10 /* External Request Lock */
/* aic7890/91/96/97 only */
bit INTSCBRAMSEL 0x08 /* Internal SCB RAM Select */
bit RAMPS 0x04 /* External SCB RAM Present */
bit USCBSIZE32 0x02 /* Use 32byte SCB Page Size */
bit CIOPARCKEN 0x01 /* Internal bus parity error enable */
}
/*
* Bus On/Off Time (p. 3-44)
*/
register BUSTIME {
address 0x085
access_mode RW
mask BOFF 0xf0
mask BON 0x0f
}
/*
* Bus Speed (p. 3-45) aic7770 only
*/
register BUSSPD {
address 0x086
access_mode RW
mask DFTHRSH 0xc0
mask STBOFF 0x38
mask STBON 0x07
mask DFTHRSH_100 0xc0
}
/* aic7850/55/60/70/80/95 only */
register DSPCISTATUS {
address 0x086
mask DFTHRSH_100 0xc0
}
/* aic7890/91/96/97 only */
register HS_MAILBOX {
address 0x086
mask HOST_MAILBOX 0xF0
mask SEQ_MAILBOX 0x0F
mask HOST_TQINPOS 0x80 /* Boundary at either 0 or 128 */
}
const HOST_MAILBOX_SHIFT 4
const SEQ_MAILBOX_SHIFT 0
/*
* Host Control (p. 3-47) R/W
* Overall host control of the device.
*/
register HCNTRL {
address 0x087
access_mode RW
bit POWRDN 0x40
bit SWINT 0x10
bit IRQMS 0x08
bit PAUSE 0x04
bit INTEN 0x02
bit CHIPRST 0x01
bit 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
}
register HCNT {
address 0x08c
size 3
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
bit BRKADRINT 0x08
bit SCSIINT 0x04
bit CMDCMPLT 0x02
bit SEQINT 0x01
mask BAD_PHASE SEQINT /* unknown scsi bus phase */
mask SEND_REJECT 0x10|SEQINT /* sending a message reject */
mask NO_IDENT 0x20|SEQINT /* no IDENTIFY after reconnect*/
mask NO_MATCH 0x30|SEQINT /* no cmd match for reconnect */
mask IGN_WIDE_RES 0x40|SEQINT /* Complex IGN Wide Res Msg */
mask BAD_STATUS 0x70|SEQINT /* Bad status from target */
mask RESIDUAL 0x80|SEQINT /* Residual byte count != 0 */
mask TRACEPOINT2 0x90|SEQINT
mask HOST_MSG_LOOP 0xa0|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 PERR_DETECTED 0xb0|SEQINT /*
* Either the phase_lock
* or inb_next routine has
* noticed a parity error.
*/
mask TRACEPOINT 0xd0|SEQINT
mask DATA_OVERRUN 0xf0|SEQINT /*
* Target attempted to write
* beyond the bounds of its
* command.
*/
mask SEQINT_MASK 0xf0|SEQINT /* SEQINT Status Codes */
mask INT_PEND (BRKADRINT|SEQINT|SCSIINT|CMDCMPLT)
}
/*
* 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
bit CIOPARERR 0x80 /* Ultra2 only */
bit PCIERRSTAT 0x40 /* PCI only */
bit MPARERR 0x20 /* PCI only */
bit DPARERR 0x10 /* PCI only */
bit SQPARERR 0x08
bit ILLOPCODE 0x04
bit ILLSADDR 0x02
bit ILLHADDR 0x01
}
/*
* Clear Interrupt Status (p. 3-52)
*/
register CLRINT {
address 0x092
access_mode WO
bit CLRPARERR 0x10 /* PCI only */
bit CLRBRKADRINT 0x08
bit CLRSCSIINT 0x04
bit CLRCMDINT 0x02
bit CLRSEQINT 0x01
}
register DFCNTRL {
address 0x093
access_mode RW
bit PRELOADEN 0x80 /* aic7890 only */
bit WIDEODD 0x40
bit SCSIEN 0x20
bit SDMAEN 0x10
bit SDMAENACK 0x10
bit HDMAEN 0x08
bit HDMAENACK 0x08
bit DIRECTION 0x04
bit FIFOFLUSH 0x02
bit FIFORESET 0x01
}
register DFSTATUS {
address 0x094
access_mode RO
bit PRELOAD_AVAIL 0x80
bit DWORDEMP 0x20
bit MREQPEND 0x10
bit HDONE 0x08
bit DFTHRESH 0x04
bit FIFOFULL 0x02
bit 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
bit SCBAUTO 0x80
mask SCBCNT_MASK 0x1f
}
/*
* Queue In FIFO (p. 3-60)
* Input queue for queued SCBs (commands that the seqencer 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
bit CRCONSEEN 0x80
bit CRCVALCHKEN 0x40
bit CRCENDCHKEN 0x20
bit CRCREQCHKEN 0x10
bit TARGCRCENDEN 0x08
bit 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
bit STATUS_PHASE 0x20
bit COMMAND_PHASE 0x10
bit MSG_IN_PHASE 0x08
bit MSG_OUT_PHASE 0x04
bit DATA_IN_PHASE 0x02
bit DATA_OUT_PHASE 0x01
}
/*
* Special Function
*/
register SFUNCT {
address 0x09f
access_mode RW
bit ALT_MODE 0x80
}
/*
* SCB Definition (p. 5-4)
*/
scb {
address 0x0a0
SCB_CDB_PTR {
size 4
alias SCB_RESIDUAL_DATACNT
alias SCB_CDB_STORE
alias SCB_TARGET_INFO
}
SCB_RESIDUAL_SGPTR {
size 4
}
SCB_SCSI_STATUS {
size 1
}
SCB_CDB_STORE_PAD {
size 3
}
SCB_DATAPTR {
size 4
}
SCB_DATACNT {
/*
* The last byte is really the high address bits for
* the data address.
*/
size 4
bit SG_LAST_SEG 0x80 /* In the fourth byte */
mask SG_HIGH_ADDR_BITS 0x7F /* In the fourth byte */
}
SCB_SGPTR {
size 4
bit SG_RESID_VALID 0x04 /* In the first byte */
bit SG_FULL_RESID 0x02 /* In the first byte */
bit SG_LIST_NULL 0x01 /* In the first byte */
}
SCB_CONTROL {
size 1
bit TARGET_SCB 0x80
bit DISCENB 0x40
bit TAG_ENB 0x20
bit MK_MESSAGE 0x10
bit ULTRAENB 0x08
bit DISCONNECTED 0x04
mask SCB_TAG_TYPE 0x03
}
SCB_SCSIID {
size 1
bit TWIN_CHNLB 0x80
mask TWIN_TID 0x70
mask TID 0xf0
mask OID 0x0f
}
SCB_LUN {
mask LID 0xff
size 1
}
SCB_TAG {
size 1
}
SCB_CDB_LEN {
size 1
}
SCB_SCSIRATE {
size 1
}
SCB_SCSIOFFSET {
size 1
}
SCB_NEXT {
size 1
}
SCB_64_SPARE {
size 16
}
SCB_64_BTT {
size 16
}
}
const SCB_UPLOAD_SIZE 32
const SCB_DOWNLOAD_SIZE 32
const SCB_DOWNLOAD_SIZE_64 48
const SG_SIZEOF 0x08 /* sizeof(struct ahc_dma) */
/* --------------------- AHA-2840-only definitions -------------------- */
register SEECTL_2840 {
address 0x0c0
access_mode RW
bit CS_2840 0x04
bit CK_2840 0x02
bit DO_2840 0x01
}
register STATUS_2840 {
address 0x0c1
access_mode RW
bit EEPROM_TF 0x80
mask BIOS_SEL 0x60
mask ADSEL 0x1e
bit DI_2840 0x01
}
/* --------------------- AIC-7870-only definitions -------------------- */
register CCHADDR {
address 0x0E0
size 8
}
register CCHCNT {
address 0x0E8
}
register CCSGRAM {
address 0x0E9
}
register CCSGADDR {
address 0x0EA
}
register CCSGCTL {
address 0x0EB
bit CCSGDONE 0x80
bit CCSGEN 0x08
bit SG_FETCH_NEEDED 0x02 /* Bit used for software state */
bit CCSGRESET 0x01
}
register CCSCBCNT {
address 0xEF
}
register CCSCBCTL {
address 0x0EE
bit CCSCBDONE 0x80
bit ARRDONE 0x40 /* SCB Array prefetch done */
bit CCARREN 0x10
bit CCSCBEN 0x08
bit CCSCBDIR 0x04
bit CCSCBRESET 0x01
}
register CCSCBADDR {
address 0x0ED
}
register CCSCBRAM {
address 0xEC
}
/*
* SCB bank address (7895/7896/97 only)
*/
register SCBBADDR {
address 0x0F0
access_mode RW
}
register CCSCBPTR {
address 0x0F1
}
register HNSCB_QOFF {
address 0x0F4
}
register SNSCB_QOFF {
address 0x0F6
}
register SDSCB_QOFF {
address 0x0F8
}
register QOFF_CTLSTA {
address 0x0FA
bit SCB_AVAIL 0x40
bit SNSCB_ROLLOVER 0x20
bit SDSCB_ROLLOVER 0x10
mask SCB_QSIZE 0x07
mask SCB_QSIZE_256 0x06
}
register DFF_THRSH {
address 0x0FB
mask WR_DFTHRSH 0x70
mask RD_DFTHRSH 0x07
mask RD_DFTHRSH_MIN 0x00
mask RD_DFTHRSH_25 0x01
mask RD_DFTHRSH_50 0x02
mask RD_DFTHRSH_63 0x03
mask RD_DFTHRSH_75 0x04
mask RD_DFTHRSH_85 0x05
mask RD_DFTHRSH_90 0x06
mask RD_DFTHRSH_MAX 0x07
mask WR_DFTHRSH_MIN 0x00
mask WR_DFTHRSH_25 0x10
mask WR_DFTHRSH_50 0x20
mask WR_DFTHRSH_63 0x30
mask WR_DFTHRSH_75 0x40
mask WR_DFTHRSH_85 0x50
mask WR_DFTHRSH_90 0x60
mask WR_DFTHRSH_MAX 0x70
}
register SG_CACHE_PRE {
access_mode WO
address 0x0fc
mask SG_ADDR_MASK 0xf8
bit ODD_SEG 0x04
bit LAST_SEG 0x02
bit LAST_SEG_DONE 0x01
}
register SG_CACHE_SHADOW {
access_mode RO
address 0x0fc
mask SG_ADDR_MASK 0xf8
bit ODD_SEG 0x04
bit LAST_SEG 0x02
bit 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
/*
* 1 byte per target starting at this address for configuration values
*/
CMDSIZE_TABLE {
alias TARG_SCSIRATE
size 8
}
BUSY_TARGETS {
size 16
}
/*
* Bit vector of targets that have ULTRA enabled as set by the BIOS.
* The Sequencer relies in a per-SCB field to control the disconnect
* priveldge.
*/
ULTRA_ENB {
size 2
/*
* Partial transfer past cacheline end to be
* transferred using an extra S/G.
*/
alias MWI_RESIDUAL
}
/*
* 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.
*/
DISC_DSB {
size 2
}
/*
* 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
bit PRELOADEN 0x80
bit WIDEODD 0x40
bit SCSIEN 0x20
bit SDMAEN 0x10
bit SDMAENACK 0x10
bit HDMAEN 0x08
bit HDMAENACK 0x08
bit DIRECTION 0x04
bit FIFOFLUSH 0x02
bit FIFORESET 0x01
}
SEQ_FLAGS {
size 1
bit IDENTIFY_SEEN 0x80
bit SCBPTR_VALID 0x40
bit TARGET_CMD_IS_TAGGED 0x40
bit DPHASE 0x20
/* Target flags */
bit TARG_CMD_PENDING 0x10
bit CMDPHASE_PENDING 0x08
bit DPHASE_PENDING 0x04
bit SPHASE_PENDING 0x02
bit 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
bit CDI 0x80
bit IOI 0x40
bit 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
}
/*
* 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 qinfifo, 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
}
/*
* Interrupt kernel for a message to this target on
* the next transaction. This is usually used for
* negotiation requests.
*/
TARGET_MSG_REQUEST {
size 2
}
/*
* 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
bit ENSELO 0x40
bit ENSELI 0x20
bit ENRSELI 0x10
bit ENAUTOATNO 0x08
bit ENAUTOATNI 0x04
bit ENAUTOATNP 0x02
}
/*
* Track whether the transfer byte count for
* the current data phase is odd.
*/
DATA_COUNT_ODD {
size 1
}
/*
* The initiator specified tag for this target mode transaction.
*/
INITIATOR_TAG {
size 1
}
/*
* These are reserved registers in the card's scratch ram. Some of
* the values are specified in the AHA2742 technical reference manual
* and are initialized by the BIOS at boot time.
*/
SCSICONF {
address 0x05a
size 1
bit TERM_ENB 0x80
bit RESET_SCSI 0x40
bit ENSPCHK 0x20
mask HSCSIID 0x07 /* our SCSI ID */
mask HWSCSIID 0x0f /* our SCSI ID if Wide Bus */
}
HOSTCONF {
address 0x05d
size 1
}
HA_274_BIOSCTRL {
address 0x05f
size 1
mask BIOSMODE 0x30
mask BIOSDISABLED 0x30
bit CHANNEL_B_PRIMARY 0x08
}
/*
* Per target SCSI offset values for Ultra2 controllers.
*/
TARG_OFFSET {
address 0x070
size 16
}
}
const TID_SHIFT 4
const SCB_LIST_NULL 0xff
const TARGET_CMD_CMPLT 0xfe
const CCSGADDR_MAX 0x80
const CCSGRAM_MAXSEGS 16
/* WDTR Message values */
const BUS_8_BIT 0x00
const BUS_16_BIT 0x01
const BUS_32_BIT 0x02
/* Offset maximums */
const MAX_OFFSET_8BIT 0x0f
const MAX_OFFSET_16BIT 0x08
const MAX_OFFSET_ULTRA2 0x7f
const HOST_MSG 0xff
/* Target mode command processing constants */
const CMD_GROUP_CODE_SHIFT 0x05
const STATUS_BUSY 0x08
const STATUS_QUEUE_FULL 0x28
const SCB_TARGET_PHASES 0
const SCB_TARGET_DATA_DIR 1
const SCB_TARGET_STATUS 2
const SCB_INITIATOR_TAG 3
const TARGET_DATA_IN 1
/*
* Downloaded (kernel inserted) constants
*/
/* Offsets into the SCBID array where different data is stored */
const QOUTFIFO_OFFSET download
const QINFIFO_OFFSET download
const CACHESIZE_MASK download
const INVERTED_CACHESIZE_MASK download