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monitor-sources/nisrv.mac
There are 19 other files named nisrv.mac in the archive. Click here to see a list.
; Edit= 8971 to NISRV.MAC on 22-Sep-88 by RASPUZZI
;Move FTHIST out of NISRV and put it in PROLOG where it should be.
; Edit= 8927 to NISRV.MAC on 23-Aug-88 by LOMARTIRE
;Improve BUG. documentation
; UPD ID= 8565, RIP:<7.MONITOR>NISRV.MAC.2, 11-Feb-88 11:42:59 by GSCOTT
;TCO 7.1218 - Update copyright date.
; UPD ID= 2134, SNARK:<6.1.MONITOR>NISRV.MAC.27, 5-Jun-85 10:05:40 by MCCOLLUM
;TCO 6.1.1406 - Update copyright notice.
; UPD ID= 2029, SNARK:<6.1.MONITOR>NISRV.MAC.26, 28-May-85 17:07:49 by GROSSMAN
;TCO 6.1.1414 - Make NU.RPI require a valid portal ID. Also make it return
;the User ID.
; UPD ID= 1902, SNARK:<6.1.MONITOR>NISRV.MAC.25, 4-May-85 19:20:14 by MCCOLLUM
;TCO 6.1.1238 - Fix more BUG. documentation
; UPD ID= 1819, SNARK:<6.1.MONITOR>NISRV.MAC.24, 24-Apr-85 19:50:48 by MCCOLLUM
;TCO 6.1.1238 - Fix BUG. documentation
; UPD ID= 1807, SNARK:<6.1.MONITOR>NISRV.MAC.23, 24-Apr-85 13:50:59 by GROSSMAN
;TCO 6.1.1342 - Add 'external' portal ID support (NU.CXI and friends).
; UPD ID= 1801, SNARK:<6.1.MONITOR>NISRV.MAC.22, 23-Apr-85 17:32:50 by GROSSMAN
;TCO 6.1.1337 - Move SETNIA to NIUSR.
; UPD ID= 1679, SNARK:<6.1.MONITOR>NISRV.MAC.21, 25-Mar-85 10:58:52 by GROSSMAN
;TCO 6.1.1285 - Fix NU.RPI.
; UPD ID= 1290, SNARK:<6.1.MONITOR>NISRV.MAC.20, 9-Jan-85 11:05:27 by GROSSMAN
;TCO 6.1.1122 - Move to section 6.
; UPD ID= 1274, SNARK:<6.1.MONITOR>NISRV.MAC.19, 5-Jan-85 16:01:10 by GROSSMAN
;TCO 6.1.1113 - Remove request for NITEST from here.
; UPD ID= 1266, SNARK:<6.1.MONITOR>NISRV.MAC.18, 4-Jan-85 09:05:26 by GROSSMAN
;TCO 6.1.1109 - Remove extra RESCDs. Get rid of unused NF. functions and
;routines and their callbacks. Totally re-do DLLDMA.
; UPD ID= 1186, SNARK:<6.1.MONITOR>NISRV.MAC.17, 11-Dec-84 14:52:50 by GROSSMAN
;TCO 6.1.1081 - Make errors during .NICLO clear PRCLO so that the close may be
;tried again.
; UPD ID= 1148, SNARK:<6.1.MONITOR>NISRV.MAC.16, 5-Dec-84 00:37:17 by GROSSMAN
;TCO 6.1.1072 - Remove useless calls to NIRES and NISTP. Fix CLOCBK to return
;+1 always.
; UPD ID= 1134, SNARK:<6.1.MONITOR>NISRV.MAC.15, 28-Nov-84 13:45:39 by GROSSMAN
;TCO 6.1.1064 - Change all calls to DNGWDx to ASGRES.
; UPD ID= 1047, SNARK:<6.1.MONITOR>NISRV.MAC.14, 12-Nov-84 23:38:40 by GROSSMAN
;TCO 6.1.1046 - Don't use NIBARF anymore, just pass the error upwards.
; UPD ID= 758, SNARK:<6.1.MONITOR>NISRV.MAC.12, 27-Aug-84 11:58:50 by GROSSMAN
;Disable FTHIST.
; UPD ID= 756, SNARK:<6.1.MONITOR>NISRV.MAC.11, 26-Aug-84 23:34:28 by GROSSMAN
;Remove DCN feature test in lieu of finding a new home for SETNIA.
; UPD ID= 755, SNARK:<6.1.MONITOR>NISRV.MAC.10, 26-Aug-84 10:29:11 by GROSSMAN
;Put DECnet address generator under DCN feature test.
; UPD ID= 750, SNARK:<6.1.MONITOR>NISRV.MAC.9, 23-Aug-84 09:31:22 by GROSSMAN
;Implement DLLSCS (Set channel state).
;Remove junk code.
; UPD ID= 736, SNARK:<6.1.MONITOR>NISRV.MAC.8, 10-Aug-84 17:27:10 by GROSSMAN
;Make SETNIA smart enough to set the DECnet address on it's own.
; UPD ID= 714, SNARK:<6.1.MONITOR>NISRV.MAC.7, 27-Jul-84 00:13:08 by GROSSMAN
;Fix close of information portals.
; UPD ID= 556, SNARK:<6.1.MONITOR>NISRV.MAC.6, 24-May-84 14:03:06 by GROSSMAN
;Return channel status in NU.OPN.
;Add history buffer maintenance code.
; UPD ID= 520, SNARK:<6.1.MONITOR>NISRV.MAC.5, 14-May-84 09:45:09 by GROSSMAN
;Fix opening of information portals.
; UPD ID= 465, SNARK:<6.1.MONITOR>NISRV.MAC.4, 27-Apr-84 13:37:55 by GROSSMAN
;Implement NISRV.MEM.
; UPD ID= 367, SNARK:<6.1.MONITOR>NISRV.MAC.2, 2-Mar-84 02:27:01 by GROSSMAN
;Add PRFQA to portal block. Used by PHYKNI to find the free queue header
;address efficiently.
;Put consistency checking into entry points
; UPD ID= 317, SNARK:<6.1.MONITOR>NISRV.MAC.1, 8-Feb-84 17:33:18 by GROSSMAN
;Create this module from NIDLL
; COPYRIGHT (c) DIGITAL EQUIPMENT CORPORATION 1976, 1988.
; ALL RIGHTS RESERVED.
;
; THIS SOFTWARE IS FURNISHED UNDER A LICENSE AND MAY BE USED AND COPIED
; ONLY IN ACCORDANCE WITH THE TERMS OF SUCH LICENSE AND WITH THE
; INCLUSION OF THE ABOVE COPYRIGHT NOTICE. THIS SOFTWARE OR ANY OTHER
; COPIES THEREOF MAY NOT BE PROVIDED OR OTHERWISE MADE AVAILABLE TO ANY
; OTHER PERSON. NO TITLE TO AND OWNERSHIP OF THE SOFTWARE IS HEREBY
; TRANSFERRED.
;
; THE INFORMATION IN THIS SOFTWARE IS SUBJECT TO CHANGE WITHOUT NOTICE
; AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY DIGITAL EQUIPMENT
; CORPORATION.
;
; DIGITAL ASSUMES NO RESPONSIBILITY FOR THE USE OR RELIABILITY OF ITS
; SOFTWARE ON EQUIPMENT THAT IS NOT SUPPLIED BY DIGITAL.
SUBTTL Stu Grossman
SUBTTL Preamble
; Searches
IFE TOPS-20 <
SEARCH PROLOG ; Standard monitor defs
; Define a Title
TTITLE NISRV,,< - NI Data Link Layer>
FTHINI==-1 ; -1 means produce skyseg code
IFE FTHINI,<
RESCD> ; NISRV/PHYKNI is mostly resident
IFN FTHINI,<
XRESCD> ; Put us in the skyseg
>
IFE TOPS-10 <
SEARCH F,S ;SYSTEM PARAMETERS
SEARCH MACSYM
SEARCH D36PAR
$RELOC
$HIGH
TITLE NISRV - NI Data Link Layer
STDAC. ;GET STANDARD AC'S FROM MACSYM
FTNITEST=0 ;TEMPORARILY (SOON IN FGEN.HLP)
>
SEARCH NIPAR
; Special AC definitions
DEFAC UN,Q1 ; Points to UN block (user arg)
DEFAC PR,Q2 ; Points to portal (PR) block
Subttl Table of Contents
; Table of Contents for NISRV
;
; Section Page
;
;
; 1. Special Definitions For TOPS10/TOPS20 Compatibility . 4
; 2. Function dispatch flags . . . . . . . . . . . . . . . 5
; 3. Constant definitions
; 3.1 NISRV to PHYKNI interface . . . . . . . . . . 6
; 4. Macro Definitions
; 4.1 ERROR - Report an NISRV error code . . . . . . 7
; 4.2 Interrupt control macros . . . . . . . . . . . 8
; 4.3 Portal Table Block . . . . . . . . . . . . . . 9
; 5. DLLUNI - User to NIDLL interface routine . . . . . . . 10
; 6. DLLOPN - Open an NISRV portal . . . . . . . . . . . . 11
; 7. DLLCLO - Close a DLL port . . . . . . . . . . . . . . 12
; 8. DLLEMA/DLLDMA - Enable/Disable a multicast address . . 13
; 9. DLLXMT - Send a DLL message . . . . . . . . . . . . . 14
; 10. DLLRCV - DLL Specify Recieve Buffer . . . . . . . . . 15
; 11. DLLPCB - Port Driver Call Back routine . . . . . . . . 16
; 12. DLLICB - Call Back from Port Driver was unknown . . . 17
; 13. DLLPST - Post A Message as being transmitted . . . . . 18
; 14. DLLLSC - Line state Changed . . . . . . . . . . . . . 19
; 15. DLLRPC - Read Portal Counters . . . . . . . . . . . . 20
; 16. DLLRCI - Read Channel Information . . . . . . . . . . 21
; 17. DLLSCA - Set Channel Address . . . . . . . . . . . . . 22
; 18. DLLRPL - Read Portal List . . . . . . . . . . . . . . 23
; 19. DLLRCL - Read Channel List . . . . . . . . . . . . . . 24
; 20. DLLRPI - Read Portal Information . . . . . . . . . . . 25
; 21. Network management
; 21.1 Set Channel State . . . . . . . . . . . . . . 26
; 21.2 Convert External Portal ID to Internal Portal 27
; 21.3 Read Channel Counters . . . . . . . . . . . . 28
; 22. CALUSR - Calls the user up after setting up the UN blo 29
; 23. FNDEXI - Search for an external portal ID . . . . . . 30
; 24. ALLPOR - Co-routine for looping through all portals . 31
; 25. Miscellaneous routines . . . . . . . . . . . . . . . . 32
; 26. Static Storage . . . . . . . . . . . . . . . . . . . . 33
; 27. End of NISRV . . . . . . . . . . . . . . . . . . . . . 34
SUBTTL Special Definitions For TOPS10/TOPS20 Compatibility
IFE TOPS-10 <
EXTERNAL RTN ;COMMON SUBROUTINE RETURN (CPOPJ)
EXTERNAL XBLTA ;EXTENDED BLT
EXTERNAL PI.TFP ;TURN OFF SELECTED PI
EXTERNAL PI.TNP ;TURN ON SELECTED PI
KIEPT==.CPEPT## ;LOCATION OF EPT
DLSCHN==NETCHN## ;PRIORITY INTERRUPT ASSIGNMENT FOR KLNI
PIPIIP==LI.IPA## ;INTERRUPT IN PROGRESS CHANNELS
OPDEF RETBAD [POPJ P,] ;ERROR RETURN
OPDEF EA.ENT [PUSHJ P,SSEC1##] ;MAKE SURE WE ARE NON ZERO SECTION
OPDEF UNBRK [JRST]
DEFINE SAVEPQ <SAVEAC <P1,P2,P3>> ;ROOM TO WORK
DEFINE NOSKED <> ;DON,T HAVE TO WORRY ABOUT THESE
DEFINE OKSKED <> ; IN TOPS10
DEFINE RESCD <> ; "
DEFINE TNXEND <> ; "
DEFINE CHNOFF (CHN) <
CONO PI,PI.TFP+1B<28+CHN>> ;TURN OFF SELECTED PI
DEFINE CHNON (CHN) <
CONO PI,PI.TNP+1B<28+CHN>> ;TURN ON SELECTED PI
KNIN=1 ;NUMBER OF KLNI'S (TEMPORARILY)
; SOON TO BE M.KNI?
> ;END IFE TOPS-10
SUBTTL Function dispatch flags
FC.POR==1B2 ;PORTAL ID IS REQUIRED
SUBTTL Constant definitions -- NISRV to PHYKNI interface
..VAL==-1 ; Make values start at 0
NF.ILL==.VAL. ;ILLEGAL FUNCTION CODE
NF.XMT==.VAL. ;MSG XMITTED XMIT MESSAGE
NF.RCV==.VAL. ;MSG RCVIED POST RECIEVE BUFFER
NF.LSC==.VAL. ;LINE STATE HAS CHANGED
NF.RDC==.VAL. ;READ CN COMP READ COUNTERS (AND ZERO)
NF.DPT==.VAL. ; DISABLE PROTOCOL TYPE
NF.EMA==.VAL. ; ENABLE MULTICAST ADDRESS
NF.DMA==.VAL. ; DISABLE MULTICAST ADDRESS
NF.ASP==.VAL. ;ASSIGN PROTOCOL
NF.RCI==.VAL. ;READ CHANNEL INFO
NF.CLO==.VAL. ;CLOSE PORTAL
NF.SCA==.VAL. ;SET CHANNEL ADDRESS
NF.RPC==.VAL. ;READ PORTAL COUNTERS
NF.SCS==.VAL. ;SET CHANNEL STATE
NF.RPI==.VAL. ;READ PORTAL INFORMATION
NF.MAX==.VAL. ;MAXIMUM NF FUNCTION
NF.MAX==NF.MAX-1 ; Correct the maximum
SUBTTL Macro Definitions -- ERROR - Report an NISRV error code
; Call: ERROR UNxyz%
DEFINE ERROR (SYM)<JRST <ERET(SYM)>>
DEFINE ERET (SYM)<INTERR (\SYM)>
DEFINE INTERR (SYM)<RET'SYM>
;Generate error returns
X==1
DEFINE XX (VAL)<RET'VAL: JSP T1,RETX>
RETBAS:
REPEAT UNMAX%,<
XX (\X)
X==X+1
>
RETX: TLZ T1,-1 ; Zero the left half
SUBI T1,RETBAS ; Compute offset
RET ; And return
SUBTTL Macro Definitions -- Interrupt control macros
OPDEF NIOFF [CALL .NIOFF] ; Disables KLNI interrupts
OPDEF NION [CALL .NION] ; Enables KLNI interrupts
SUBTTL Macro Definitions -- Portal Table Block
; Data Structures
; Portal Table block
BEGSTR PR
WORD NXT ; Pointer to next block (must be first)
FIELD FLG,9 ; Flags
BIT CLO ; Portal is closing
BIT PAD ; Pad flag
FIELD EXI,9 ; External portal ID
HWORD BSZ ; Receive buffer size
WORD UID ; What user wants on callback
HWORD PMD ; Packing mode
HWORD PRO ; Protocol type (bytes swapped)
WORD CHN ; Ethernet channel block address
WORD MUL ; Bit vector of enabled multicasts
WORD POS ; Callback address
WORD CHK ; Check word (address of this block)
WORD FQA ; Free queue header address
WORD OXM ; Outstanding transmits
WORD ORC ; Outstanding receives
WORD TLZ ; Time at which counters were zeroed
WORD BYR ; Bytes received
WORD DGR ; Datagrams received
WORD BYS ; Bytes sent
WORD DGS ; Datagrams sent
WORD UBU ; User buffer unavailable
ENDSTR
SUBTTL DLLUNI - User to NIDLL interface routine
;
; Called:
; MOVEI T1,<Function code>
; MOVE T2,<Address of block>
; CALL DLLUNI
; error return (in T1)
; success return
IFN FTHINI,RESCD
DLLUNI::EA.ENT ; Make sure we are in section 1
IFN FTHINI,<
JRST @[DLLUN1] ; Jump to the skyseg
XRESCD ; Change PSECTs
DLLUN1:
>
IFN FTHIST,<
CALL RECUNB ; Record UN block
>; End of IFN FTHIST
SAVEAC <UN,PR> ; Save our permanent AC's
SKIPLE T1 ; Function too small?
CAXLE T1,NU.MAX ; No, function too large?
ERROR UNIFC% ; Yes to either... Illegal Function Code
MOVE T1,USRDSP-1(T1) ; Get dispatch bits
MOVE UN,T2 ; Setup UN
JUMPLE UN,ERET UNIUA% ; Jump if illegal UN block address
TXNN T1,FC.POR ; Should we check for a valid portal ID?
JRST (T1) ; No, dispatch
LOAD PR,UNPID,(UN) ; Get his PID (Portal block address)
JUMPLE PR,ERET UNNSP% ; Error if he gave a silly PID
LOAD T2,PRCHK,(PR) ; Get check word
CAME T2,PR ; Should be equal to PR block address
ERROR UNNSP% ; Unrecognised portal ID
JN PRCLO,(PR),ERET UNPWS% ; Error if we are closing
JRST (T1) ; Dispatch to the correct function
USRDSP:
TABBEG NU.OPN,NU.MAX,FOO
TABENT NU.OPN,<IFIW!DLLOPN> ; Open a portal
TABENT NU.CLO,<IFIW!FC.POR!DLLCLO> ; Close a portal
TABENT NU.RCV,<IFIW!FC.POR!DLLRCV> ; Specify recieve buffer
TABENT NU.XMT,<IFIW!FC.POR!DLLXMT> ; Send out a datagram
TABENT NU.EMA,<IFIW!FC.POR!DLLEMA> ; Enable Multicast
TABENT NU.DMA,<IFIW!FC.POR!DLLDMA> ; Disable Multicast
TABENT NU.RPC,<IFIW!FC.POR!DLLRPC> ; Read Portal Counters
TABENT NU.RCI,<IFIW!DLLRCI> ; Read Channel Info
TABENT NU.RPL,<IFIW!DLLRPL> ; Read Portal List
TABENT NU.RCL,<IFIW!DLLRCL> ; Read Channel List
TABENT NU.RPI,<IFIW!FC.POR!DLLRPI> ; Read Portal Info
TABENT NU.SCA,<IFIW!DLLSCA> ; Set Channel Address
TABENT NU.RCC,<IFIW!FC.POR!DLLRCC> ; Read Channel Counters
TABENT NU.SCS,<IFIW!DLLSCS> ; Set Channel State
TABENT NU.CXI,<IFIW!DLLCXI> ; Convrt xtrnal to int PID
TABEND
SUBTTL DLLOPN - Open an NISRV portal
; Check for unused protocol type, and existence of channel.
DLLOPN:
MOVX T1,<.RESP2,,PR.LEN>; Get the number we need
MOVX T2,.RESGP ; from the general pool
CALL ASGRES ; Allocate the PR block
ERROR UNRES% ; Resource failure
MOVE PR,T1 ; PR <= block address
STOR PR,UNPID,(UN) ; Make PR block address be the PID
STOR PR,PRCHK,(PR) ; Set up the check word
LOAD T1,UNUID,(UN) ; Get his user-ID
STOR T1,PRUID,(PR) ; Save it for callbacks
LOAD T1,UNPAD,(UN) ; Get the pad bit
STOR T1,PRPAD,(PR) ; Stash it away
LOAD T2,UNCBA,(UN) ; Get address of the posting routine
STOR T2,PRPOS,(PR) ; Save it
MOVX T1,UNICR% ; Illegal callback routine address
JUMPLE T2,OPNERR ; Error if callback is .LE. 0
LOAD T1,UNPRO,(UN) ; Get the desired protocol type
STOR T1,PRPRO,(PR) ; Save the protocol type
CAIN T1,-1 ; Information portal?
JRST OPNINF ; Yes, don't assign a protocol type
MOVE T1,TODCLK ; Get current uptime (in MS)
STOR T1,PRTLZ,(PR) ; Indicate time at which counters were zeroed
MOVX T1,NF.ASP ; Assign protocol type
CALL NIDSP ; Try to assign protocol type (UNPRO on UNCHN)
JRST OPNERR ; Illegal protocol type, or already in use
; Read the channel status
MOVX T1,NF.RCI ; Read channel info
CALL NIDSP ; Get it from PHYKNI
TRN ; ?!?
; Here to set up a portal block
OPNINF: NIOFF ; No interrupts please
OPNIN1: AOS T1,PORID ; Generate a new external portal ID
CALL FNDEXI ; Is this one already assigned?
TRNA ; Nope, all is fine
JRST OPNIN1 ; Yes, try again
STOR T1,PREXI,(PR) ; Assign the external portal ID
MOVE T1,PORBAS ; Get pointer to first block in chain
STOR T1,PRNXT,(PR) ; Make our block point to first port block
MOVEM PR,PORBAS ; Make our block be the new first
NION ; Allow interrupts
RETSKP ; Skip return to caller
; Here when we get an error during DLLOPN. T1 contains error code
OPNERR: SETZRO PRCHK,(PR) ; First, zapp the check word
SETOM UNPID,(UN) ; and return a really bad PID to ensure that
; caller dies horribly if he uses it.
EXCH PR,T1 ; Save error code, get PR block into T1
CALL RELRES ; Release the memory
MOVE T1,PR ; Get back the error code
RET ; And non-skip return
SUBTTL DLLCLO - Close a DLL port
; First disable the protocol type and return all receive buffers. Then
; send a chaser packet through the hardware to flush all outstanding
; commands.
DLLCLO: SETONE PRCLO,(PR) ; Indicate that portal is closing
LOAD T1,PRPRO,(PR) ; Get protocol type
CAIN T1,-1 ; Information portal??
JRST CLOINF ; Yes, no protocol type to disable
MOVX T1,NF.DPT ; Disable protocol type
CALL NIDSP ; and return all receive buffers
JRST CLOER1 ; Propagate the error
SETONE PRPRO,(PR) ; In case of error, don't do this again
CLOINF: MOVX T1,NF.CLO ; Chase out all his outstanding commands
CALL NIDSP ; ...
JRST CLOER1 ; Propagate the error
RETSKP ; Return success
CLOER1: SETZRO PRCLO,(PR) ; Indicate that we aren't doing a close
RET ; And give error return
CLOBUG: BUG. (HLT,KNICFP,NISRV,SOFT,<Cannot find portal block during close.>,<<PR,PR>>,<
Cause: NISRV was unable to find a portal block on the portal block list during
a close portal callback.
Data: PR - Portal block address
>)
; Here when chaser packet gets returned. We can now deallocate his portal
; block and inform him of the death of his portal.
CLOCBK: XMOVEI T1,PORBAS-PR.NXT ; Get address of address of 1st portal block
PIOFF ; Absolutely, positively no interrupts
TRNA ; Enter loop at the right point
CLOCB1: LOAD T1,PRNXT,(T1) ; Get address of next portal block
JUMPE T1,CLOBUG ; Bug if we reached the end
OPSTR <CAME PR,>,PRNXT,(T1) ; Is our portal next?
JRST CLOCB1 ; No, try again
LOAD T2,PRNXT,(PR) ; Get addr of portal block following us
STOR T2,PRNXT,(T1) ; Splice us out of the chain
PION ; Enable interrupts
STOR PR,UNPID,(UN) ; Install PID in UN block
LOAD T1,PRUID,(PR) ; Get user id
STOR T1,UNUID,(UN) ; Put it where user can find it
MOVX T1,NU.CLO ; Generate close
CALL CALUSR ; callback
SETZRO PRCHK,(PR) ; Clear the check word
MOVE T1,PR ; Get rid of this block
CALLRET RELRES ; Free core up from port driver interface block
SUBTTL DLLEMA/DLLDMA - Enable/Disable a multicast address
DLLEMA: SKIPA T1,[NF.EMA] ; Get fcn code for enabling multicast addrs
DLLDMA: MOVX T1,NF.DMA ; Get fcn code for disabling multicast addrs
LOAD T2,PRPRO,(PR) ; Get protocol type
CAXN T2,-1 ; Information only portal?
ERROR UNNPE% ; Yes, not allowed to do this
CALL NIDSP ; Do the dispatch
RET ; Pass the error back to the user
RETSKP ; And give good return
SUBTTL DLLXMT - Send a DLL message
;DLLXMT - Send an NI datagram
;
; MOVEI T1,NU.TRN
; XMOVEI T2,<ADDRESS OF BLOCK>
; CALL DLLUNI
; error return
; normal return
;
; Where:
;
;UNPID - This is the PORTAL-ID returned on the open call.
;
;UNBFA - This is the address of the buffer (for non MSD lists) and the
;address of the MSD chain for MSD style lists.
;
;UNBSZ - For non MSD buffers, this is the buffer size. It should be left 0
; for MSD style buffers. This buffer length includes the CRC.
; (ie:Data Length+CRC length<4>) and is specified in bytes.
;
;UNPRO - This is the protocol type for which this message is destined.
;
;
;UNDAD,UNDAD+1(ADDRESS) - This is the NI address for which the message is
; bound. It may be multicast, broadcast or any
; other allowable address.
;
;UNPSC - A flag to indicate that the CRC is included in this message.
;
;This routine is called to send an NI datagram out over the wire
;(to the port driver). It accepts as it's arguments either an MSD style
;pointer or a non-msd style pointer. On the non-msd pointer you must give
;a buffer count along with the buffer address. It will then queue the message
;out through the port. Please be advised that no guarantee of deliver is made.
;
DLLXMT: MOVX T1,NF.XMT ;SEND A MESSAGE
CALLRET NIDSP ;SEND IT OFF
SUBTTL DLLRCV - DLL Specify Recieve Buffer
DLLRCV: MOVX T1,NF.RCV ; Function is post receive buffer
CALLRET NIDSP ; Call the device driver
; Post Input Available
DLLIAV: LOAD T1,PRUID,(PR) ; Get want the user wants us to call him with
STOR T1,UNUID,(UN) ; Save it in the block
STOR PR,UNPID,(UN) ; Save it for the user
MOVX T1,NU.RCV ; Recieved message
CALLRET CALUSR ; Call the user
SUBTTL DLLPCB - Port Driver Call Back routine
; DLLCBK - Call back from Port Driver routine
;
; CALLED:
; T1/ Function code
; T3/ Error/success code for user
;
; This routine is called by the port driver when he must
;notify the DLL of an event which will effect users.
DLLCBK: SKIPLE T1 ;Is it a legal function
CAXLE T1,NF.MAX ;Is it a legal function
JRST DLLICB
MOVE T1,DLLFNC-1(T1) ;Get the dispatch address and good bits
TXNN T1,FC.POR ;Does this function require a portal?
JRST (T1) ; No, don't do the check
LOAD T2,PRCHK,(PR) ;Get check word
CAME T2,PR ;Everything Kosher?
BUG. (HLT,DLLBPA,NISRV,SOFT,<Illegal Portal supplied by PHYKNI>,<<UN,UN>,<PR,PR>>,<
Cause: PHYKNI returned an illegal portal block address when it called back
NISRV.
Data: UN - UN block
PR - Bad portal block address
>)
JRST (T1) ;Call the completion routine
DLLFNC:
TABBEG NF.XMT,NF.MAX,<IFIW DLLICB>
TABENT NF.XMT,<IFIW!FC.POR!DLLPST> ; Post message as transmitted
TABENT NF.RCV,<IFIW!FC.POR!DLLIAV> ; Post input available
TABENT NF.LSC,<IFIW!DLLLSC> ; Line state changed
TABENT NF.RDC,<IFIW!FC.POR!DLLRDC> ; Read counters completed
TABENT NF.CLO,<IFIW!FC.POR!CLOCBK> ; Close portal callback
TABENT NF.SCA,<IFIW!SCACBK> ; Set channel address callback
TABENT NF.RPC,<IFIW!RPCCBK> ; Read portal counters callback
TABEND
repeat 0,<
IFIW!FC.POR!DLLICB ;RETURN FOR WRITE STATION INFO COMPLETE
IFIW!FC.POR!DLLICB ;RETURN FOR ENABLE PROTOCAL TYPE
IFIW!FC.POR!DLLICB ;RETURN FOR DISABLE PROTOCAL TYPE
IFIW!FC.POR!DLLICB ;RETURN FOR ENABLE MULTICAST ADDRESS
IFIW!FC.POR!DLLICB ;RETURN FOR DISABLE MULTICAST ADDRESS
IFIW!FC.POR!DLLICB ;RETURN FOR ENABLE PROMISCOUS MODE
IFIW!FC.POR!DLLICB ;RETURN FOR DISABLE PROMISCOUS MODE
IFIW!FC.POR!DLLICB ;RETURN FOR START PORT
IFIW!FC.POR!DLLICB ;RETURN FOR RESET PORT
IFIW!FC.POR!DLLICB ;RETURN FOR STOP PORT
>
SUBTTL DLLICB - Call Back from Port Driver was unknown
DLLICB: BUG. (HLT,NIDUNF,NISRV,SOFT,<Unknown Callback code from Port Driver.>,,<
Cause: The port driver has called back with either a code in T1 that is
not understood or that is not expected to be called back on.
>,RTN)
SUBTTL DLLPST - Post A Message as being transmitted
;DLLPST - Call back for Output Done (NU.TRN)
;
; MOVEI T1,NU.TRN
; XMOVEI T2,<ADDRESS OF INFORMATION BLOCK>
; CALL <CALLBACK ROUTINE FROM OPEN>
; always return
;
; Where:
;
;UNPID - The portal ID on which the message was received.
;
;UNUID - This is the ID which the user asked us to specify on his posted
; messages.
;
;UNBFA - The message block pointer of the buffer just sent.
;
;UNBSZ - This is the size of the buffer as supplied by the user.
;
;UNSTA Status of the message:
;
;
; Value Event Type
;
; 00 No error
; 01 Internal Hardware error
; 02 Transmit aborted
; 03 Local unrecognized command
; 04 Buffer length violation [1]
; 05 Carrier lost
; 06 Frame too short [2]
; 07 Remote Failure to defer [3]
; 10 Frame too long
; 11 Open Circuit
; 12 Short Circuit
; 13 ** SPARE
; 14 Carrier detect check failed
; 15 Excessive collisions
;
;
;[1] The length of the information transmitted and the length of the
; BSD is inconsistent.
;
;[2] This error occurs only when padding of the transmitted frame is
; not specified and the length of the data is less than 46 bytes.
;
;[3] This error is not detectable by the NIA module and thus will never
; be set. They are only included to conform to the Network Management
; specification.
;
;
;This call back signifies that a message has been transmitted, but does not
;mean that it was delivered to the user as no gaurantees are made on delivery
;at this level.
;
DLLPST: LOAD T1,PRUID,(PR) ;GET THE USER ID
STOR T1,UNUID,(UN) ;STOR IT FOR THE USER
STOR PR,UNPID,(UN) ;SAVE IT FOR THE USER
MOVX T1,NU.XMT ;MESSAGE TRANSMITTED
CALLRET CALUSR ;CALL THE USER
SUBTTL DLLLSC - Line state Changed
; Call PHYKNI to read channel status and callback the portal owner to
; inform him.
DLLLSC: SAVEAC P1 ; Save a P
LOAD P1,UNCHN,(UN) ; Save the channel # across calls to the user
SKIPA PR,PORBAS ;GET THE BAS
DLLLS0: LOAD PR,PRNXT,(PR) ;GET THE NEXT ONE
JUMPE PR,RTN ;Return when we have done all portals
MOVX T1,NF.RCI ; Read channel info
CALL NIDSP ; Get it from PHYKNI
BUG. (HLT,KNIERP,NISRV,SOFT,<Illegal error return from PHYKNI>,<<T1,ERROR>>,<
Cause: NISRV got an error return from PHYKNI while processing a state
change callback. The error code (one of the UNxyz% errors) is in
T1.
Data: ERROR - Error returned from PHYKNI
>,RTN)
LOAD T1,PRUID,(PR) ;GET THE USERS ID
STOR T1,UNUID,(UN) ;SAVE IT
STOR PR,UNPID,(UN) ;SAVE FOR THE USER
STOR P1,UNCHN,(UN) ; Install the channel number
MOVX T1,NU.RCI ;SAY LINE STATE CHANGE
MOVE T2,UN ;GET THE ADDRESS OF THE BLOCK
LOAD T3,PRPOS,(PR) ;GET THE POSTING ROUTINE
CALL @T3 ;CALL HIM THERE
NOP ;DON'T WORRY ABOUT HIS ERRORS
JRST DLLLS0 ;Go to next portal
SUBTTL DLLRPC - Read Portal Counters
DLLRPC: LOAD T1,UNSPI,(UN) ; Get source portal ID
SKIPLE T1 ; Less than or equal to 0 is bad
OPSTR <CAME T1,>,PRCHK,(T1) ; Is it valid?
ERROR UNNSP% ; Nope, No Such Portal
LOADE T1,PRPRO,(T1) ; Get the source portal's protocol type
CAMN T1,[-1] ; Information only portal?
ERROR UNNPE% ; Yes, can't read counters for info portals
MOVX T1,NF.RPC ; Read the User Buffer Unavailable counter
CALLRET NIDSP
; Here for read portal counters callback
RPCCBK: STOR PR,UNPID,(UN) ; Save portal ID for the user
LOAD T1,PRUID,(PR) ; Get the user ID
STOR T1,UNUID,(UN) ; Save that too
MOVX T1,NU.RPC ; Indicate what we are returning
CALL CALUSR ; And call back the user
RET
SUBTTL DLLRCI - Read Channel Information
DLLRCI: MOVX T1,NF.RCI ; Read channel info
CALLRET NIDSP ; Ask the hardware about it
SUBTTL DLLSCA - Set Channel Address
DLLSCA: MOVX T1,NF.SCA ; Set channel address
CALLRET NIDSP ; Tell the hardware about it
; Here for set channel address callback. Tell all portals that the address
; has changed.
SCACBK: SAVEAC P1
LOAD P1,UNCHN,(UN) ; Save channel # across calls to the user
SKIPA PR,PORBAS ; Get address of first portal block
SCACB1: LOAD PR,PRNXT,(PR) ; Get address of next portal block
JUMPE PR,RTN ; Return when done
LOAD T1,PRUID,(PR) ; Get the user's ID
STOR T1,UNUID,(UN) ; Save it
STOR PR,UNPID,(UN) ; Save the portal ID
STOR P1,UNCHN,(UN) ; Save the channel #
MOVX T1,NU.SCA ; Function is set channel address
CALL CALUSR ; Tell the user about the address change
JRST SCACB1 ; And go on to the next user
SUBTTL DLLRPL - Read Portal List
DLLRPL: XMOVEI PR,PORBAS ; Get base address of portal list
MOVE T2,[MOVE T1,PR] ; Get instruction for fetching data
; Common code for read portal list and read channel list
; PR contains address of base of list, T2 contains instruction to XCT
; to obtain data to be stored.
IFN PR.NXT-PS.NXT,PRINTX ? Value mismatch between PRNXT and PSNXT in REDLST
REDLST: LOAD T4,UNBSZ,(UN) ; Get buffer size
JUMPLE T4,ERET UNIBS% ; Any room?
LOAD T3,UNBFA,(UN) ; Get buffer address
JUMPLE T3,ERET UNIFB% ; Jump if illegally formatted buffer
NIOFF ; No interrupts while walking chain
SKIPA PR,(PR) ; Get first item in the list
DLLRP1: LOAD PR,PRNXT,(PR) ; Get next portal block address
JUMPE PR,DLLRP2 ; Jump if we hit end of chain
XCT T2 ; Get data into T1
SKIPLE T4 ; Skip if user didn't allocate enough room
MOVEM T1,(T3) ; Save the portal ID
XMOVEI T3,1(T3) ; Increment dest address
SOJA T4,DLLRP1 ; Loop over the whole chain
DLLRP2: NION ; Re-enable interrupts
MOVE T1,T4 ; Save -portal count
OPSTR <SUB T4,>,UNBSZ,(UN) ; Compute -number of ID's returned
OPSTR <MOVNM T4,>,UNBSZ,(UN) ; Make it positive & save it
JUMPL T1,ERET UNIBS% ; Jump if we overflowed
RETSKP
SUBTTL DLLRCL - Read Channel List
DLLRCL: XMOVEI PR,CHNBAS ; Get base of channel list
MOVE T2,CHNFET ; Get instruction for fetching channel #
JRST REDLST
SUBTTL DLLRPI - Read Portal Information
DLLRPI: SAVEAC P1
LOADE T1,PRPRO,(PR) ; Get the protocol type
MOVE P1,T1 ; Keep it in a safe place
SKIPL T1 ; One of the funny ones?
CALL SWAB ; No, normalize the bytes
STOR T1,UNPRO,(UN) ; Setup the protocol type
LOAD T1,PRUID,(PR) ; Get the user's ID
STOR T1,UNUID,(UN) ; Return the user's ID
LOAD T1,PRPAD,(PR) ; Get the pad bit
STOR T1,UNPAD,(UN) ; Return that too
SETZ T1, ; Get a zero
STOR T1,UNPMS,(UN) ; Return PI mask
LOAD T1,PROXM,(PR) ; Get outstanding transmit count
STOR T1,UNOXM,(UN) ; Return outstanding transmit count
LOAD T1,PRORC,(PR) ; Get outstanding receive count
STOR T1,UNORC,(UN) ; Return outstanding receive count
LOAD T1,PRPOS,(PR) ; Get the callback address
STOR T1,UNCBA,(UN) ; Return callback address
LOAD T1,PREXI,(PR) ; Get external portal ID
STOR T1,UNEXI,(UN) ; Return external portal ID
CAMN P1,[-1] ; Information portal?
RETSKP ; Yes, there is no more to return
MOVX T1,NF.RPI ; Get PHYKNI function code
CALL NIDSP ; Get PHYKNI to fill out it's part
RET ; Pass error upwards
LOAD T1,PRBSZ,(PR) ; Get the buffer size
STOR T1,UNBSZ,(UN) ; Return it
RETSKP ; And return success
SUBTTL Network management -- Set Channel State
DLLSCS: MOVX T1,NF.SCS ; Set the channel's state
CALLRET NIDSP ; Do this in PHYKNI
SUBTTL Network management -- Convert External Portal ID to Internal Portal ID
DLLCXI: LOAD T1,UNEXI,(UN) ; Get the external portal ID
CALL FNDEXI ; Lookup the exteral ID
ERROR UNNSP% ; No such portal
STOR T2,UNPID,(UN) ; Install the real portal ID
RETSKP ; And return success
SUBTTL Network Management -- Read Channel Counters
DLLRCC: MOVX T1,NF.RDC ; Read the counters
CALLRET NIDSP ; Get them from the hardware
; Read Counters Complete
DLLRDC: LOAD T1,PRUID,(PR) ; Get the user ID
STOR T1,UNUID,(UN) ; Stor it for the user
STOR PR,UNPID,(UN) ; Save the portal ID for the user
MOVX T1,NU.RCC ; Read counters complete
CALLRET CALUSR ; Call the user
SUBTTL CALUSR - Calls the user up after setting up the UN block
;
; Called:
; T1/ Function code
; Q1/ Address of users block
; Q2/ Address of ports block
; Q3/ Address o call back routine
; CALL CALUSR
; error return
; normal return
;
CALUSR: MOVE T2,UN ; Get UN block block addr where user expects it
IFN FTHIST,<
CALL RECUNB ; Record UN block
>; End of IFN FTHIST
OPSTR <CALL @>,PRPOS,(PR) ; Callback the user
TRN ; Ignore errors
RET ; Good
SUBTTL FNDEXI - Search for an external portal ID
; Search for the portal with the external portal ID in T1.
;
; Call: MOVX T1,external_portal_ID
; CALL FNDEXI
; <Return +1, failure>
; <Return +2, T1/unchanged, T2/real portal ID>
FNDEXI: XMOVEI T2,PORBAS ; Get the portal list base
NIOFF
FNDEX1: LOAD T2,PRNXT,(T2) ; Get the next portal block
JUMPE T2,ONRET ; Jump if done
OPSTR <CAME T1,>,PREXI,(T2) ; Does the external ID match
JRST FNDEX1 ; Loop over all the portals
JRST ONRSKP ; Return success
SUBTTL ALLPOR - Co-routine for looping through all portals
; ALLPOR is a co-routine that will loop through all portals in existence.
; Skip and non-skip returns are treated the same.
ALLPOR: SKIPA PR,PORBAS ; Get base of portal list
ALLPO1: LOAD PR,PRNXT,(PR) ; Get next portal block
JUMPE PR,ALLPO2 ; Jump when we reach end of list
CALL @(P) ; Call back the caller
NOP ; Ignore skip/non-skip
JRST ALLPO1 ; Loop for the rest
ALLPO2: ADJSP P,-1 ; Pop the caller off the stack
RET ; and return to his caller
SUBTTL Miscellaneous routines
repeat 0,<
; Here on unexpected error returns from NIDSP
NIBARF: MOVE T1,(P) ; Get caller's address
BUG. (HLT,KNIBER,NISRV,SOFT,<Bad error return from PHYKNI>,<<T1,ERROR>,<T1,ROUTINE>>,<
Cause: NISRV got an unexpected error return from PHYKNI. The probable error
code is in T1, and the address of the caller is on the stack.
>)
RET
>; End of repeat 0
SUBTTL Static Storage
RS (PORBAS,1) ; Head of portal list
RS (PORID,1) ; Next external portal ID to be assigned
SUBTTL End of NISRV
;End of NISRV