obp/obp/dev/sun4v-devices/vpci/bus-ops.fth

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\ Hypervisor Software File: bus-ops.fth
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id: @(#)bus-ops.fth 1.3 07/06/22
purpose:
copyright: Copyright 2007 Sun Microsystems, Inc.  All rights reserved.

copyright: Use is subject to license terms.

headerless

\ Decode just the 2 "ss" bits which denotes the address space
: cfg>sstype ( phys.hi -- sstype )  d# 24 rshift  3 and ;

\ Convert phys.hi into actual offset within configuration space
\ For ss=0 encoding,
\       phys.hi encoding:               RRRR0000.bbbbbbbb.dddddfff.rrrrrrrr
\       PCI config space offset:        0000.bbbb.bbbb.dddd.dfff.rrrr.rrrr
\       PCIE config space offset:       bbbb.bbbb.dddd.dfff.RRRR.rrrr.rrrr
\ For other ss types,
\       phys.hi encoding:               nptx00ss.bbbbbbbb.dddddfff.rrrrrrrr
\       PCI config space offset:        bbbb.bbbb.dddd.dfff.0000.rrrr.rrrr

: phys.hi>cfg-offset ( phys.hi -- pci-cfg-offset )
   dup cfg>sstype 0=  if                        ( phys.hi )
      dup d# 28 >> d# 8 <<                      \ Position RRRR bits
   else
      0
   then
   over h# ff and +                             ( phys.hi reg# )
   swap h# 00ff.ff00 and 4 << +                 ( offset )
;

: (map-in) ( pa len -- va ) >r xlsplit r> " map-in" $call-parent  ;

\ sun4v does not permit config space map-ins.
: bus-map-cfg ( p.hi len --  )
   2drop cmn-error[ " invalid map-in on config space" ]cmn-end
;

: bus-map-io ( phys.lo phys.mid phys.hi len -- va )
   >r 2drop                                     ( phys.lo ) ( r: len )
   pci-iosize 1- and  pci-iobase +              ( pa )
   r> (map-in)                                  ( va ) ( r: )
;

: bus-map-mem  ( phys.lo phys.mid phys.hi len -- va )
   >r 2drop                                     ( phys.lo ) ( r: len )
   -1 and32 pci-mem32base +                     ( pa )
   r> (map-in)                                  ( va ) ( r: )
;

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