17 Nov 2005 15:42:05                      l2.asm                                                               Page      1File:Line  Address  OpCode   Ref. Value   Source Code                                                               v3.2.0========== ======== ======== ========== = ================================================================================                                                                                    ;*********************************************************************                                          ;*                                          ;*      Hifn Software                                          ;*      Licensed Material - Property of Hifn                                          ;*  (C) Copyright Hifn Inc. 2005                                          ;*      (C) Copyright International Business Machines Corp. 1999                                          ;*      All Rights Reserved.                                          ;*                                          ;*      U.S. Government Users Restricted Rights - Use, duplication or                                          ;*      disclosure restricted by GSA ADP Schedule Contract with                                          ;*  Hifn Inc.                                          ;*                                          ;*********************************************************************                                          ;***********************************************************************                                          ;       Network Processor Sample Layer-2 Forwarding Code               ;                                          ;**********************************************************************;                                          ;                                          ; File Name                                          ; *********                                          ; l2.asm                                          ;                                          ; Purpose                                          ; *******                                          ; This is a standalone piece of code that demonstrates static Layer-2                                          ; forwarding by the Network Processor. It is purely for educational                                          ; purposes and has not been optimized for performance.                                          ;                                          ; This file contains sections to setup the network                                          ; processor and dispatch handlers for UP/DN Guided Cells and                                           ; UP/DN unicast frame processing. The file is designed to run in a                                          ; wrap mode without a switch fabric so that the UP side is wrapped                                          ; to the DN side. The GCH code handles guided traffic from                                          ; the control point. The GCH handlers in this sample file include                                          ; support for reading/writing locations in memory and returning results                                          ; back to the control point. The static layer-2 UP and DN direct tables                                          ; (DTs) can be built by sending guided traffic to this sample code. The                                          ; guided traffic would contain commands to write these tables to the                                           ; control memory. Sample UP and DN direct tables are included at the                                          ; end of this file. The UP unicast dispatch handler parses the                                          ; destination MAC address of the frame that is received on one of the                                          ; 40 ports. It performs a tree search of the UP DT using the DA MAC as                                          ; a key and either discards the frame or enqueues the frame using                                          ; values retrieved from the UP DT. The DN unicast dispatch handler                                          ; uses the lookup identifier in the frame header to search the DN DT.                                          ; It uses the result of the search to enqueue the frame to the                                          ; appropriate target port.                                           ;                                          ; Document Reference                                          ; ******************                                          ; Network Processor Assembler Language Programmer's Guide and                                          ;   Instruction Summary                                          ;                                          ; Main Entry Point                                          ; ****************                                          ; Not Applicable                                          ;                                          ; Interrupt Handler Entry Points                                          ; ******************************                                          ; (1)  Timers (0-3)         at 0x0600                                          ; (2)  Interrupts (0-3)     at 0x0620                                          ; (3)  Rsvd                 at 0x064017 Nov 2005 15:42:05                      l2.asm                                                               Page      2File:Line  Address  OpCode   Ref. Value   Source Code                                                               v3.2.0========== ======== ======== ========== = ================================================================================                                          ; (4)  DN abort             at 0x0660                                          ; (5)  DN GTH               at 0x0680                                          ; (6)  UP wrap guided       at 0x06A0                                          ; (7)  UP wrap data         at 0x06C0                                          ; (8)  GPQ                  at 0x06E0                                          ; (8)  UP GCH               at 0x0400                                          ; (9)  DN GCH               at 0x0800                                          ; (10) UP ports 0 thru 39   at 0x1000                                          ; (11) DN unicast           at 0x1800                                          ; (12) DN multicast         at 0x1C00                                          ;                                          ; List of Procedures                                          ; ******************                                          ; None                                          ;                                          ; Modification History                                          ; ********************                                          ; Date      By       Change Description         Reason For Change                                          ; ****      **       ******************         *****************                                          ; 12/02/99  glc,mcb  file created               n/a                                          ; 05/26/00  cv, kmw  file updated               Support 4GS3                                          ;                                          ;**********************************************************************;                                                                                                                              @INCLUDE "key4tse.inc"                                          @INCLUDE "l2.inc"                                                                                    ;**********************************************************************;                                          ;                     Boot                                          ;**********************************************************************;                                          ;                                          ; Purpose                                          ; *******                                          ; The boot will :                                          ;       1) Configure the Network Processor memories                                          ;       2) Configure the Free queue extended stack max size                                          ;       3) Init the DRAM controller                                          ;       4) Configure the Switch Data Mover's Stack threshold                                          ;       5) Configure the Target port data store map                                          ;       6) Configure the Port Dispatch table                                          ;       7) Set the Target Blade                                          ;       8) Configure the ethertype used for Guided traffic                                          ;       9) Configure the thresholds for the Buffer control block and                                           ;           the Free Queue extended stack for congestion control                                          ;                                           ; Input Parameters                                          ; ****************                                          ; None                                          ;                                          ; Returned Values                                          ; ***************                                          ; None                                          ;                                          ; General Purpose Registers Destroyed                                          ; ***********************************                                          ; None                                          ;                                          ; Array Register Locations Destroyed                                          ; **********************************                                          ; None                                          ;17 Nov 2005 15:42:05                      l2.asm                                                               Page      3File:Line  Address  OpCode   Ref. Value   Source Code                                                               v3.2.0========== ======== ======== ========== = ================================================================================                                          ; Pre-Conditions                                          ; **************                                          ; None                                          ;                                          ; Post-Conditions