\ ***************************************************************************** \ * 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 whether this device is a pci-express device : pci-express? ( addr -- 0|1 ) 10 pci-cap-find 0<> ; \ check whether this device is a pci-express device : pci-x? ( addr -- 0|1 ) 07 pci-cap-find 0<> ; \ check whether 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! ;