--- /dev/null
+\ *****************************************************************************
+\ * Copyright (c) 2004, 2011 IBM Corporation
+\ * All rights reserved.
+\ * This program and the accompanying materials
+\ * are made available under the terms of the BSD License
+\ * which accompanies this distribution, and is available at
+\ * http://www.opensource.org/licenses/bsd-license.php
+\ *
+\ * Contributors:
+\ * IBM Corporation - initial implementation
+\ ****************************************************************************/
+
+\ ----------------------------------------------------------
+\ **************** PCI Helper functions *******************
+\ ----------------------------------------------------------
+
+\ convert an integer to string of len digits
+: int2str ( int len -- str len ) swap s>d rot <# 0 ?DO # LOOP #> ;
+
+\ convert addr to busnr
+: pci-addr2bus ( addr -- busnr ) 10 rshift FF and ;
+
+\ convert addr to devnr
+: pci-addr2dev ( addr -- dev ) B rshift 1F and ;
+
+\ convert addr to functionnumber
+: pci-addr2fn ( addr -- dev ) 8 rshift 7 and ;
+
+\ convert busnr devnr to addr
+: pci-bus2addr ( busnr devnr -- addr ) B lshift swap 10 lshift + ;
+
+\ print out a pci config addr
+: pci-addr-out ( addr -- ) dup pci-addr2bus 2 0.r space FFFF and 4 0.r ;
+
+\ Dump out the whole configspace
+: pci-dump ( addr -- )
+ 10 0 DO
+ dup
+ cr i 4 * +
+ dup pci-addr-out space
+ rtas-config-l@ 8 0.r
+ LOOP
+ drop cr
+;
+
+
+\ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+\ the following functions use l@ to fetch the data,
+\ that's because the some pcie cores have probs with w@
+\ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+\ read Vendor ID
+: pci-vendor@ ( addr -- id ) rtas-config-l@ FFFF and ;
+
+\ read Device ID
+: pci-device@ ( addr -- id ) rtas-config-l@ 10 rshift ;
+
+\ read Status
+: pci-status@ ( addr -- status ) 4 + rtas-config-l@ 10 rshift ;
+
+\ read Revision ID
+: pci-revision@ ( addr -- id ) 8 + rtas-config-b@ ;
+
+\ read Class Code
+: pci-class@ ( addr -- class ) 8 + rtas-config-l@ 8 rshift ;
+
+\ read Cache Line Size
+: pci-cache@ ( addr -- size ) C + rtas-config-b@ ;
+
+\ read Header Type
+: pci-htype@ ( addr -- type ) E + rtas-config-b@ ;
+
+\ read Sub Vendor ID
+: pci-sub-vendor@ ( addr -- sub-id ) 2C + rtas-config-l@ FFFF and ;
+
+\ read Sub Device ID
+: pci-sub-device@ ( addr -- sub-id ) 2C + rtas-config-l@ 10 rshift FFFF and ;
+
+\ read Interrupt Pin
+: pci-interrupt@ ( addr -- interrupt ) 3D + rtas-config-b@ ;
+
+\ read Minimum Grant
+: pci-min-grant@ ( addr -- min-gnt ) 3E + rtas-config-b@ ;
+
+\ read Maximum Latency
+: pci-max-lat@ ( addr -- max-lat ) 3F + rtas-config-b@ ;
+
+\ Check if Capabilities are valid
+: pci-capabilities? ( addr -- 0|1 ) pci-status@ 4 rshift 1 and ;
+
+\ fetch the offset of the next capability
+: pci-cap-next ( cap-addr -- next-cap-off ) rtas-config-b@ FC and ;
+
+\ calc the address of the next capability
+: pci-cap-next-addr ( cap-addr -- next-cap-addr ) 1+ dup pci-cap-next dup IF swap -100 and + ELSE nip THEN ;
+
+
+\ Dump out all capabilities
+: pci-cap-dump ( addr -- )
+ cr
+ dup pci-capabilities? IF
+ 33 + BEGIN
+ pci-cap-next-addr dup 0<>
+ WHILE
+ dup pci-addr-out s" : " type
+ dup rtas-config-b@ 2 0.r cr
+ REPEAT
+ s" end found "
+ ELSE
+ s" capabilities not enabled!"
+ THEN
+ type cr drop
+;
+
+\ search the capability-list for this id
+: pci-cap-find ( addr id -- capp-addr|0 )
+ swap dup pci-capabilities? IF
+ 33 + BEGIN
+ pci-cap-next-addr dup 0<> IF
+ dup rtas-config-b@ 2 pick =
+ ELSE
+ true
+ THEN
+ UNTIL
+ nip
+ ELSE
+ 2drop 0
+ THEN
+;
+
+\ check wether this device is a pci-express device
+: pci-express? ( addr -- 0|1 ) 10 pci-cap-find 0<> ;
+
+\ check wether this device is a pci-express device
+: pci-x? ( addr -- 0|1 ) 07 pci-cap-find 0<> ;
+
+\ check wether this device has extended config space
+: pci-config-ext? ( addr -- 0|1 ) pci-express? ;
+
+
+\ Disable Bus Master, Memory Space and I/O Space for this device
+: pci-device-disable ( -- ) my-space 4 + dup rtas-config-l@ 7 invert and swap rtas-config-l! ;
+
+\ Enable Bus Master
+: pci-master-enable ( -- ) my-space 4 + dup rtas-config-l@ 4 or swap rtas-config-l! ;
+
+\ Disable Bus Master
+: pci-master-disable ( -- ) my-space 4 + dup rtas-config-l@ 4 invert and swap rtas-config-l! ;
+
+\ Enable response to mem accesses of pci device
+: pci-mem-enable ( -- ) my-space 4 + dup rtas-config-w@ 2 or swap rtas-config-w! ;
+
+\ Enable response to I/O accesses of pci-device
+: pci-io-enable ( -- ) my-space 4 + dup rtas-config-w@ 1 or swap rtas-config-w! ;
+
+\ Enable Bus Master, I/O and mem access
+: pci-enable ( -- ) my-space 4 + dup rtas-config-w@ 7 or swap rtas-config-w! ;
+
+\ Enable #PERR and #SERR errors of pci-device
+: pci-error-enable ( -- ) my-space 4 + dup rtas-config-w@ 140 or swap rtas-config-w! ;
+
+\ prints out the ScanInformation about a device
+\ char is a sign for device type e.g. D - device ; B - bridge
+: pci-out ( addr char -- )
+ 15 spaces
+ over pci-addr-out
+ s" (" type emit s" ) : " type
+ dup pci-vendor@ 4 0.r space
+ pci-device@ 4 0.r
+ 4 spaces
+;
+
+
+\ set and fetch the interrupt Pin
+: pci-irq-line@ ( addr -- irq-pin ) 3C + rtas-config-b@ ;
+: pci-irq-line! ( pin addr -- ) 3C + rtas-config-b! ;
+
+\ set and fetch primary bus number
+: pci-bus-prim! ( nr addr -- ) 18 + dup rtas-config-l@ FFFFFF00 and rot + swap rtas-config-l! ;
+: pci-bus-prim@ ( addr -- nr ) 18 + rtas-config-l@ FF and ;
+
+\ set and fetch secondary bus number
+: pci-bus-scnd! ( nr addr -- ) 18 + dup rtas-config-l@ FFFF00FF and rot 8 lshift + swap rtas-config-l! ;
+: pci-bus-scnd@ ( addr -- nr ) 18 + rtas-config-l@ 8 rshift FF and ;
+
+\ set and fetch subordinate bus number
+: pci-bus-subo! ( nr addr -- ) 18 + dup rtas-config-l@ FF00FFFF and rot 10 lshift + swap rtas-config-l! ;
+: pci-bus-subo@ ( addr -- nr ) 18 + rtas-config-l@ 10 rshift FF and ;
+
+\ set and fetch primary, secondary and subordinate bus number
+: pci-bus! ( subo scnd prim addr -- ) swap rot 8 lshift + rot 10 lshift + swap 18 + dup rtas-config-l@ FF000000 and rot + swap rtas-config-l! ;
+: pci-bus@ ( addr -- subo scnd prim ) 18 + rtas-config-l@ dup 10 rshift FF and swap dup 8 rshift FF and swap FF and ;
+
+\ Reset secondary Status
+: pci-reset-2nd ( addr -- ) 1C + dup rtas-config-l@ FFFF0000 or swap rtas-config-l! ;
Code Review / kvmfornfv.git / blobdiff