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\ Hypervisor Software File: global.fth
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id: @(#)global.fth 1.1 07/01/23
copyright: Copyright 2007 Sun Microsystems, Inc. All Rights Reserved
copyright: Use is subject to license terms.
\ Register offset definitions
\ Driver specific MAC modes
5 constant serdes-ewrap-loopback
6 constant serdes-pad-loopback
8 constant 2xgf-ext-loopback \ Neptune 2XGF external loopback
9 constant qgc-ext-loopback \ Neptune QGC external loopback
\ Many of the registers inside NIU are not accessable to the guest.
\ They are written to by Hypervisor using a set of APIs as a proxy.
\ We need to key off this when initialzing Neptune vs. NIU
\ Ethernet standard requires minimun 46B payload, so the minimun
\ size of the an Ethernet frame is 60B= 6B dest mac + 6B (src mac)
\ + 2B (ether-type) + 46B
d# 60 constant /min-ether-len
d# 18 constant full-header
d# 18 constant /rx-header
: .bad-mode ( -- ) cmn-warn[ " Bad speed mode" ]cmn-end ;
: .bad-mactype ( -- ) cmn-warn[ " Bad MAC type" ]cmn-end ;
\ Neptune is a little endian device. The 'rl@' FCode tokenizes into 'x@',
\ which is a big endian access. We pre-swap the data here so that we read and
\ write the correct values.
: swapped-rx@ ( vadr -- x ) rx@ xbflip ;
: swapped-rl@ ( vadr -- l ) rl@ lbflip ;
: swapped-rw@ ( vadr -- w ) rw@ wbflip ;
: swapped-rx! ( x vadr -- ) >r xbflip r> rx! ;
: swapped-rl! ( l vadr -- ) >r lbflip r> rl! ;
: swapped-rw! ( l vadr -- ) >r wbflip r> rw! ;
\ Must swap for real hardware.
1 d# 8 lshift constant mpr \ Used by both XMAC and BMAC
: unsupported-port ( -- )
cmn-fatal[ " Unsupported port number" ]cmn-end abort
\ Offsets for the two XMACs
: xmac-offset ( -- offset )
\ Offsets for the two XPCSs
: xpcs-offset ( -- offset )
\ Offsets for the two BMACs
: bmac-offset ( -- offset )
\ Offsets for the four PCSs
: pcs-offset ( -- offset )
\ RX Message Descriptor Format
\ Neptune rmd entry only holds the high32 bits of the 44bits address
8 constant /rcd \ Rx Completion descriptor is 8 bytes
d# 64 constant #rmds \ Number of Rx Message Descriptors
\ Do not use a too small number because
\ WRED requires some room for defending
\ the interface from attack
\ #rcds/#rmds = (block buff size)/(smallest partition size in the buff)
\ = 8K/2K = 4, so #rcds = 4 x #rmds
#rmds 4 * constant #rcds \ Number of Rx Completion Descriptors
#rmds 4 - constant #rbufs \ #rmds - 4
d# 8192 constant /rbuf \ Size of each RX buffer
\ TX Message Descriptor Format
d# 64 constant #tmds \ # of TX descriptor ring
d# 8 constant /tmd \ Size of TX descriptor ring entry
d# 1 constant #tbufs \ Only 1 TX buffer
d# 2048 constant /tbuf \ Size of TX buffer
\ Because the offsets of Neptune's port0 and port1 IPP must be the same
\ as the N2-NIU's offsets, the four IPP' offsets are as follows,
: ipp-step ( port -- ipp-offset )
h# 2.0000 constant ta=10 \ TA field of Clause 45 frame = 10
1 d# 28 lshift constant op=write
3 d# 28 lshift constant op=read45 \ Clause45 Read is b11
2 d# 28 lshift constant op=read22 \ Clause22 Read is b10
1 d# 30 lshift constant st=cls22
0 value rx-dma-err-status \ Rx DMA Rrror status bits
0 value rdmc-pre-err-status \ Rx DMA Prefetch Error Status bits
0 value rdmc-sha-err-status \ Rx DMA Shadow Error Status bits
0 value rx-ctl-dat-fifo-status
0 value ipp-int-err-status \ IPP Interrupt status
0 value rx-xmac-err-status \ Rx XMAC
0 value rx-bmac-err-status \ Rx BMAC
0 value tx-dma-err-status
0 value tx-xmac-err-status
0 value tx-bmac-err-status
\ --- Do external loopback or not ---
false value do-ext-loopback?
projects / OpenSPARC-T2-SAM / blob